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| author | levytamar82 <levytamar82@gmail.com> | 2013-11-21 12:31:10 -0700 |
|---|---|---|
| committer | Yunqing Wang <yunqingwang@google.com> | 2013-11-21 14:19:49 -0800 |
| commit | 8def766de24e082c74a0012774864badce3c4f51 (patch) | |
| tree | fc1df887089fc76196f62c1ae01b7681399a0557 /vp9/encoder | |
| parent | e002bb99a89897a7787dbc1d217acec54d916ec5 (diff) | |
| download | libvpx-8def766de24e082c74a0012774864badce3c4f51.tar libvpx-8def766de24e082c74a0012774864badce3c4f51.tar.gz libvpx-8def766de24e082c74a0012774864badce3c4f51.tar.bz2 libvpx-8def766de24e082c74a0012774864badce3c4f51.zip | |
vp9_short_fdct32x32_rd vp9_short_fdct32x32 optimized for AVX2
Change-Id: I6366e84490883b72362f762369d7e5bccb64f02f
Diffstat (limited to 'vp9/encoder')
| -rw-r--r-- | vp9/encoder/x86/vp9_dct32x32_avx2.c | 2710 | ||||
| -rw-r--r-- | vp9/encoder/x86/vp9_dct_avx2.c | 2579 |
2 files changed, 5289 insertions, 0 deletions
diff --git a/vp9/encoder/x86/vp9_dct32x32_avx2.c b/vp9/encoder/x86/vp9_dct32x32_avx2.c new file mode 100644 index 000000000..9ea22fed2 --- /dev/null +++ b/vp9/encoder/x86/vp9_dct32x32_avx2.c @@ -0,0 +1,2710 @@ +/* + * Copyright (c) 2012 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include <immintrin.h> // AVX2 +#include "vp9/common/vp9_idct.h" // for cospi constants +#include "vpx_ports/mem.h" + +#define pair256_set_epi16(a, b) \ + _mm256_set_epi16(b, a, b, a, b, a, b, a, b, a, b, a, b, a, b, a) + +#define pair256_set_epi32(a, b) \ + _mm256_set_epi32(b, a, b, a, b, a, b, a) + + + + +#if FDCT32x32_HIGH_PRECISION +static INLINE __m256i k_madd_epi32_avx2(__m256i a, __m256i b) { + __m256i buf0, buf1; + buf0 = _mm256_mul_epu32(a, b); + a = _mm256_srli_epi64(a, 32); + b = _mm256_srli_epi64(b, 32); + buf1 = _mm256_mul_epu32(a, b); + return _mm256_add_epi64(buf0, buf1); +} + +static INLINE __m256i k_packs_epi64_avx2(__m256i a, __m256i b) { + __m256i buf0 = _mm256_shuffle_epi32(a, _MM_SHUFFLE(0, 0, 2, 0)); + __m256i buf1 = _mm256_shuffle_epi32(b, _MM_SHUFFLE(0, 0, 2, 0)); + return _mm256_unpacklo_epi64(buf0, buf1); +} +#endif + +void FDCT32x32_2D_AVX2(const int16_t *input, + int16_t *output_org, int stride) { + // Calculate pre-multiplied strides + const int str1 = stride; + const int str2 = 2 * stride; + const int str3 = 2 * stride + str1; + // We need an intermediate buffer between passes. + DECLARE_ALIGNED(32, int16_t, intermediate[32 * 32]); + // Constants + // When we use them, in one case, they are all the same. In all others + // it's a pair of them that we need to repeat four times. This is done + // by constructing the 32 bit constant corresponding to that pair. + const __m256i k__cospi_p16_p16 = _mm256_set1_epi16(+cospi_16_64); + const __m256i k__cospi_p16_m16 = pair256_set_epi16(+cospi_16_64, -cospi_16_64); + const __m256i k__cospi_m08_p24 = pair256_set_epi16(-cospi_8_64, cospi_24_64); + const __m256i k__cospi_m24_m08 = pair256_set_epi16(-cospi_24_64, -cospi_8_64); + const __m256i k__cospi_p24_p08 = pair256_set_epi16(+cospi_24_64, cospi_8_64); + const __m256i k__cospi_p12_p20 = pair256_set_epi16(+cospi_12_64, cospi_20_64); + const __m256i k__cospi_m20_p12 = pair256_set_epi16(-cospi_20_64, cospi_12_64); + const __m256i k__cospi_m04_p28 = pair256_set_epi16(-cospi_4_64, cospi_28_64); + const __m256i k__cospi_p28_p04 = pair256_set_epi16(+cospi_28_64, cospi_4_64); + const __m256i k__cospi_m28_m04 = pair256_set_epi16(-cospi_28_64, -cospi_4_64); + const __m256i k__cospi_m12_m20 = pair256_set_epi16(-cospi_12_64, -cospi_20_64); + const __m256i k__cospi_p30_p02 = pair256_set_epi16(+cospi_30_64, cospi_2_64); + const __m256i k__cospi_p14_p18 = pair256_set_epi16(+cospi_14_64, cospi_18_64); + const __m256i k__cospi_p22_p10 = pair256_set_epi16(+cospi_22_64, cospi_10_64); + const __m256i k__cospi_p06_p26 = pair256_set_epi16(+cospi_6_64, cospi_26_64); + const __m256i k__cospi_m26_p06 = pair256_set_epi16(-cospi_26_64, cospi_6_64); + const __m256i k__cospi_m10_p22 = pair256_set_epi16(-cospi_10_64, cospi_22_64); + const __m256i k__cospi_m18_p14 = pair256_set_epi16(-cospi_18_64, cospi_14_64); + const __m256i k__cospi_m02_p30 = pair256_set_epi16(-cospi_2_64, cospi_30_64); + const __m256i k__cospi_p31_p01 = pair256_set_epi16(+cospi_31_64, cospi_1_64); + const __m256i k__cospi_p15_p17 = pair256_set_epi16(+cospi_15_64, cospi_17_64); + const __m256i k__cospi_p23_p09 = pair256_set_epi16(+cospi_23_64, cospi_9_64); + const __m256i k__cospi_p07_p25 = pair256_set_epi16(+cospi_7_64, cospi_25_64); + const __m256i k__cospi_m25_p07 = pair256_set_epi16(-cospi_25_64, cospi_7_64); + const __m256i k__cospi_m09_p23 = pair256_set_epi16(-cospi_9_64, cospi_23_64); + const __m256i k__cospi_m17_p15 = pair256_set_epi16(-cospi_17_64, cospi_15_64); + const __m256i k__cospi_m01_p31 = pair256_set_epi16(-cospi_1_64, cospi_31_64); + const __m256i k__cospi_p27_p05 = pair256_set_epi16(+cospi_27_64, cospi_5_64); + const __m256i k__cospi_p11_p21 = pair256_set_epi16(+cospi_11_64, cospi_21_64); + const __m256i k__cospi_p19_p13 = pair256_set_epi16(+cospi_19_64, cospi_13_64); + const __m256i k__cospi_p03_p29 = pair256_set_epi16(+cospi_3_64, cospi_29_64); + const __m256i k__cospi_m29_p03 = pair256_set_epi16(-cospi_29_64, cospi_3_64); + const __m256i k__cospi_m13_p19 = pair256_set_epi16(-cospi_13_64, cospi_19_64); + const __m256i k__cospi_m21_p11 = pair256_set_epi16(-cospi_21_64, cospi_11_64); + const __m256i k__cospi_m05_p27 = pair256_set_epi16(-cospi_5_64, cospi_27_64); + const __m256i k__DCT_CONST_ROUNDING = _mm256_set1_epi32(DCT_CONST_ROUNDING); + const __m256i kZero = _mm256_set1_epi16(0); + const __m256i kOne = _mm256_set1_epi16(1); + // Do the two transform/transpose passes + int pass; + for (pass = 0; pass < 2; ++pass) { + // We process sixteen columns (transposed rows in second pass) at a time. + int column_start; + for (column_start = 0; column_start < 32; column_start += 16) { + __m256i step1[32]; + __m256i step2[32]; + __m256i step3[32]; + __m256i out[32]; + // Stage 1 + // Note: even though all the loads below are aligned, using the aligned + // intrinsic make the code slightly slower. + if (0 == pass) { + const int16_t *in = &input[column_start]; + // step1[i] = (in[ 0 * stride] + in[(32 - 1) * stride]) << 2; + // Note: the next four blocks could be in a loop. That would help the + // instruction cache but is actually slower. + { + const int16_t *ina = in + 0 * str1; + const int16_t *inb = in + 31 * str1; + __m256i *step1a = &step1[ 0]; + __m256i *step1b = &step1[31]; + const __m256i ina0 = _mm256_loadu_si256((const __m256i *)(ina)); + const __m256i ina1 = _mm256_loadu_si256((const __m256i *)(ina + str1)); + const __m256i ina2 = _mm256_loadu_si256((const __m256i *)(ina + str2)); + const __m256i ina3 = _mm256_loadu_si256((const __m256i *)(ina + str3)); + const __m256i inb3 = _mm256_loadu_si256((const __m256i *)(inb - str3)); + const __m256i inb2 = _mm256_loadu_si256((const __m256i *)(inb - str2)); + const __m256i inb1 = _mm256_loadu_si256((const __m256i *)(inb - str1)); + const __m256i inb0 = _mm256_loadu_si256((const __m256i *)(inb)); + step1a[ 0] = _mm256_add_epi16(ina0, inb0); + step1a[ 1] = _mm256_add_epi16(ina1, inb1); + step1a[ 2] = _mm256_add_epi16(ina2, inb2); + step1a[ 3] = _mm256_add_epi16(ina3, inb3); + step1b[-3] = _mm256_sub_epi16(ina3, inb3); + step1b[-2] = _mm256_sub_epi16(ina2, inb2); + step1b[-1] = _mm256_sub_epi16(ina1, inb1); + step1b[-0] = _mm256_sub_epi16(ina0, inb0); + step1a[ 0] = _mm256_slli_epi16(step1a[ 0], 2); + step1a[ 1] = _mm256_slli_epi16(step1a[ 1], 2); + step1a[ 2] = _mm256_slli_epi16(step1a[ 2], 2); + step1a[ 3] = _mm256_slli_epi16(step1a[ 3], 2); + step1b[-3] = _mm256_slli_epi16(step1b[-3], 2); + step1b[-2] = _mm256_slli_epi16(step1b[-2], 2); + step1b[-1] = _mm256_slli_epi16(step1b[-1], 2); + step1b[-0] = _mm256_slli_epi16(step1b[-0], 2); + } + { + const int16_t *ina = in + 4 * str1; + const int16_t *inb = in + 27 * str1; + __m256i *step1a = &step1[ 4]; + __m256i *step1b = &step1[27]; + const __m256i ina0 = _mm256_loadu_si256((const __m256i *)(ina)); + const __m256i ina1 = _mm256_loadu_si256((const __m256i *)(ina + str1)); + const __m256i ina2 = _mm256_loadu_si256((const __m256i *)(ina + str2)); + const __m256i ina3 = _mm256_loadu_si256((const __m256i *)(ina + str3)); + const __m256i inb3 = _mm256_loadu_si256((const __m256i *)(inb - str3)); + const __m256i inb2 = _mm256_loadu_si256((const __m256i *)(inb - str2)); + const __m256i inb1 = _mm256_loadu_si256((const __m256i *)(inb - str1)); + const __m256i inb0 = _mm256_loadu_si256((const __m256i *)(inb)); + step1a[ 0] = _mm256_add_epi16(ina0, inb0); + step1a[ 1] = _mm256_add_epi16(ina1, inb1); + step1a[ 2] = _mm256_add_epi16(ina2, inb2); + step1a[ 3] = _mm256_add_epi16(ina3, inb3); + step1b[-3] = _mm256_sub_epi16(ina3, inb3); + step1b[-2] = _mm256_sub_epi16(ina2, inb2); + step1b[-1] = _mm256_sub_epi16(ina1, inb1); + step1b[-0] = _mm256_sub_epi16(ina0, inb0); + step1a[ 0] = _mm256_slli_epi16(step1a[ 0], 2); + step1a[ 1] = _mm256_slli_epi16(step1a[ 1], 2); + step1a[ 2] = _mm256_slli_epi16(step1a[ 2], 2); + step1a[ 3] = _mm256_slli_epi16(step1a[ 3], 2); + step1b[-3] = _mm256_slli_epi16(step1b[-3], 2); + step1b[-2] = _mm256_slli_epi16(step1b[-2], 2); + step1b[-1] = _mm256_slli_epi16(step1b[-1], 2); + step1b[-0] = _mm256_slli_epi16(step1b[-0], 2); + } + { + const int16_t *ina = in + 8 * str1; + const int16_t *inb = in + 23 * str1; + __m256i *step1a = &step1[ 8]; + __m256i *step1b = &step1[23]; + const __m256i ina0 = _mm256_loadu_si256((const __m256i *)(ina)); + const __m256i ina1 = _mm256_loadu_si256((const __m256i *)(ina + str1)); + const __m256i ina2 = _mm256_loadu_si256((const __m256i *)(ina + str2)); + const __m256i ina3 = _mm256_loadu_si256((const __m256i *)(ina + str3)); + const __m256i inb3 = _mm256_loadu_si256((const __m256i *)(inb - str3)); + const __m256i inb2 = _mm256_loadu_si256((const __m256i *)(inb - str2)); + const __m256i inb1 = _mm256_loadu_si256((const __m256i *)(inb - str1)); + const __m256i inb0 = _mm256_loadu_si256((const __m256i *)(inb)); + step1a[ 0] = _mm256_add_epi16(ina0, inb0); + step1a[ 1] = _mm256_add_epi16(ina1, inb1); + step1a[ 2] = _mm256_add_epi16(ina2, inb2); + step1a[ 3] = _mm256_add_epi16(ina3, inb3); + step1b[-3] = _mm256_sub_epi16(ina3, inb3); + step1b[-2] = _mm256_sub_epi16(ina2, inb2); + step1b[-1] = _mm256_sub_epi16(ina1, inb1); + step1b[-0] = _mm256_sub_epi16(ina0, inb0); + step1a[ 0] = _mm256_slli_epi16(step1a[ 0], 2); + step1a[ 1] = _mm256_slli_epi16(step1a[ 1], 2); + step1a[ 2] = _mm256_slli_epi16(step1a[ 2], 2); + step1a[ 3] = _mm256_slli_epi16(step1a[ 3], 2); + step1b[-3] = _mm256_slli_epi16(step1b[-3], 2); + step1b[-2] = _mm256_slli_epi16(step1b[-2], 2); + step1b[-1] = _mm256_slli_epi16(step1b[-1], 2); + step1b[-0] = _mm256_slli_epi16(step1b[-0], 2); + } + { + const int16_t *ina = in + 12 * str1; + const int16_t *inb = in + 19 * str1; + __m256i *step1a = &step1[12]; + __m256i *step1b = &step1[19]; + const __m256i ina0 = _mm256_loadu_si256((const __m256i *)(ina)); + const __m256i ina1 = _mm256_loadu_si256((const __m256i *)(ina + str1)); + const __m256i ina2 = _mm256_loadu_si256((const __m256i *)(ina + str2)); + const __m256i ina3 = _mm256_loadu_si256((const __m256i *)(ina + str3)); + const __m256i inb3 = _mm256_loadu_si256((const __m256i *)(inb - str3)); + const __m256i inb2 = _mm256_loadu_si256((const __m256i *)(inb - str2)); + const __m256i inb1 = _mm256_loadu_si256((const __m256i *)(inb - str1)); + const __m256i inb0 = _mm256_loadu_si256((const __m256i *)(inb)); + step1a[ 0] = _mm256_add_epi16(ina0, inb0); + step1a[ 1] = _mm256_add_epi16(ina1, inb1); + step1a[ 2] = _mm256_add_epi16(ina2, inb2); + step1a[ 3] = _mm256_add_epi16(ina3, inb3); + step1b[-3] = _mm256_sub_epi16(ina3, inb3); + step1b[-2] = _mm256_sub_epi16(ina2, inb2); + step1b[-1] = _mm256_sub_epi16(ina1, inb1); + step1b[-0] = _mm256_sub_epi16(ina0, inb0); + step1a[ 0] = _mm256_slli_epi16(step1a[ 0], 2); + step1a[ 1] = _mm256_slli_epi16(step1a[ 1], 2); + step1a[ 2] = _mm256_slli_epi16(step1a[ 2], 2); + step1a[ 3] = _mm256_slli_epi16(step1a[ 3], 2); + step1b[-3] = _mm256_slli_epi16(step1b[-3], 2); + step1b[-2] = _mm256_slli_epi16(step1b[-2], 2); + step1b[-1] = _mm256_slli_epi16(step1b[-1], 2); + step1b[-0] = _mm256_slli_epi16(step1b[-0], 2); + } + } else { + int16_t *in = &intermediate[column_start]; + // step1[i] = in[ 0 * 32] + in[(32 - 1) * 32]; + // Note: using the same approach as above to have common offset is + // counter-productive as all offsets can be calculated at compile + // time. + // Note: the next four blocks could be in a loop. That would help the + // instruction cache but is actually slower. + { + __m256i in00 = _mm256_loadu_si256((const __m256i *)(in + 0 * 32)); + __m256i in01 = _mm256_loadu_si256((const __m256i *)(in + 1 * 32)); + __m256i in02 = _mm256_loadu_si256((const __m256i *)(in + 2 * 32)); + __m256i in03 = _mm256_loadu_si256((const __m256i *)(in + 3 * 32)); + __m256i in28 = _mm256_loadu_si256((const __m256i *)(in + 28 * 32)); + __m256i in29 = _mm256_loadu_si256((const __m256i *)(in + 29 * 32)); + __m256i in30 = _mm256_loadu_si256((const __m256i *)(in + 30 * 32)); + __m256i in31 = _mm256_loadu_si256((const __m256i *)(in + 31 * 32)); + step1[ 0] = _mm256_add_epi16(in00, in31); + step1[ 1] = _mm256_add_epi16(in01, in30); + step1[ 2] = _mm256_add_epi16(in02, in29); + step1[ 3] = _mm256_add_epi16(in03, in28); + step1[28] = _mm256_sub_epi16(in03, in28); + step1[29] = _mm256_sub_epi16(in02, in29); + step1[30] = _mm256_sub_epi16(in01, in30); + step1[31] = _mm256_sub_epi16(in00, in31); + } + { + __m256i in04 = _mm256_loadu_si256((const __m256i *)(in + 4 * 32)); + __m256i in05 = _mm256_loadu_si256((const __m256i *)(in + 5 * 32)); + __m256i in06 = _mm256_loadu_si256((const __m256i *)(in + 6 * 32)); + __m256i in07 = _mm256_loadu_si256((const __m256i *)(in + 7 * 32)); + __m256i in24 = _mm256_loadu_si256((const __m256i *)(in + 24 * 32)); + __m256i in25 = _mm256_loadu_si256((const __m256i *)(in + 25 * 32)); + __m256i in26 = _mm256_loadu_si256((const __m256i *)(in + 26 * 32)); + __m256i in27 = _mm256_loadu_si256((const __m256i *)(in + 27 * 32)); + step1[ 4] = _mm256_add_epi16(in04, in27); + step1[ 5] = _mm256_add_epi16(in05, in26); + step1[ 6] = _mm256_add_epi16(in06, in25); + step1[ 7] = _mm256_add_epi16(in07, in24); + step1[24] = _mm256_sub_epi16(in07, in24); + step1[25] = _mm256_sub_epi16(in06, in25); + step1[26] = _mm256_sub_epi16(in05, in26); + step1[27] = _mm256_sub_epi16(in04, in27); + } + { + __m256i in08 = _mm256_loadu_si256((const __m256i *)(in + 8 * 32)); + __m256i in09 = _mm256_loadu_si256((const __m256i *)(in + 9 * 32)); + __m256i in10 = _mm256_loadu_si256((const __m256i *)(in + 10 * 32)); + __m256i in11 = _mm256_loadu_si256((const __m256i *)(in + 11 * 32)); + __m256i in20 = _mm256_loadu_si256((const __m256i *)(in + 20 * 32)); + __m256i in21 = _mm256_loadu_si256((const __m256i *)(in + 21 * 32)); + __m256i in22 = _mm256_loadu_si256((const __m256i *)(in + 22 * 32)); + __m256i in23 = _mm256_loadu_si256((const __m256i *)(in + 23 * 32)); + step1[ 8] = _mm256_add_epi16(in08, in23); + step1[ 9] = _mm256_add_epi16(in09, in22); + step1[10] = _mm256_add_epi16(in10, in21); + step1[11] = _mm256_add_epi16(in11, in20); + step1[20] = _mm256_sub_epi16(in11, in20); + step1[21] = _mm256_sub_epi16(in10, in21); + step1[22] = _mm256_sub_epi16(in09, in22); + step1[23] = _mm256_sub_epi16(in08, in23); + } + { + __m256i in12 = _mm256_loadu_si256((const __m256i *)(in + 12 * 32)); + __m256i in13 = _mm256_loadu_si256((const __m256i *)(in + 13 * 32)); + __m256i in14 = _mm256_loadu_si256((const __m256i *)(in + 14 * 32)); + __m256i in15 = _mm256_loadu_si256((const __m256i *)(in + 15 * 32)); + __m256i in16 = _mm256_loadu_si256((const __m256i *)(in + 16 * 32)); + __m256i in17 = _mm256_loadu_si256((const __m256i *)(in + 17 * 32)); + __m256i in18 = _mm256_loadu_si256((const __m256i *)(in + 18 * 32)); + __m256i in19 = _mm256_loadu_si256((const __m256i *)(in + 19 * 32)); + step1[12] = _mm256_add_epi16(in12, in19); + step1[13] = _mm256_add_epi16(in13, in18); + step1[14] = _mm256_add_epi16(in14, in17); + step1[15] = _mm256_add_epi16(in15, in16); + step1[16] = _mm256_sub_epi16(in15, in16); + step1[17] = _mm256_sub_epi16(in14, in17); + step1[18] = _mm256_sub_epi16(in13, in18); + step1[19] = _mm256_sub_epi16(in12, in19); + } + } + // Stage 2 + { + step2[ 0] = _mm256_add_epi16(step1[0], step1[15]); + step2[ 1] = _mm256_add_epi16(step1[1], step1[14]); + step2[ 2] = _mm256_add_epi16(step1[2], step1[13]); + step2[ 3] = _mm256_add_epi16(step1[3], step1[12]); + step2[ 4] = _mm256_add_epi16(step1[4], step1[11]); + step2[ 5] = _mm256_add_epi16(step1[5], step1[10]); + step2[ 6] = _mm256_add_epi16(step1[6], step1[ 9]); + step2[ 7] = _mm256_add_epi16(step1[7], step1[ 8]); + step2[ 8] = _mm256_sub_epi16(step1[7], step1[ 8]); + step2[ 9] = _mm256_sub_epi16(step1[6], step1[ 9]); + step2[10] = _mm256_sub_epi16(step1[5], step1[10]); + step2[11] = _mm256_sub_epi16(step1[4], step1[11]); + step2[12] = _mm256_sub_epi16(step1[3], step1[12]); + step2[13] = _mm256_sub_epi16(step1[2], step1[13]); + step2[14] = _mm256_sub_epi16(step1[1], step1[14]); + step2[15] = _mm256_sub_epi16(step1[0], step1[15]); + } + { + const __m256i s2_20_0 = _mm256_unpacklo_epi16(step1[27], step1[20]); + const __m256i s2_20_1 = _mm256_unpackhi_epi16(step1[27], step1[20]); + const __m256i s2_21_0 = _mm256_unpacklo_epi16(step1[26], step1[21]); + const __m256i s2_21_1 = _mm256_unpackhi_epi16(step1[26], step1[21]); + const __m256i s2_22_0 = _mm256_unpacklo_epi16(step1[25], step1[22]); + const __m256i s2_22_1 = _mm256_unpackhi_epi16(step1[25], step1[22]); + const __m256i s2_23_0 = _mm256_unpacklo_epi16(step1[24], step1[23]); + const __m256i s2_23_1 = _mm256_unpackhi_epi16(step1[24], step1[23]); + const __m256i s2_20_2 = _mm256_madd_epi16(s2_20_0, k__cospi_p16_m16); + const __m256i s2_20_3 = _mm256_madd_epi16(s2_20_1, k__cospi_p16_m16); + const __m256i s2_21_2 = _mm256_madd_epi16(s2_21_0, k__cospi_p16_m16); + const __m256i s2_21_3 = _mm256_madd_epi16(s2_21_1, k__cospi_p16_m16); + const __m256i s2_22_2 = _mm256_madd_epi16(s2_22_0, k__cospi_p16_m16); + const __m256i s2_22_3 = _mm256_madd_epi16(s2_22_1, k__cospi_p16_m16); + const __m256i s2_23_2 = _mm256_madd_epi16(s2_23_0, k__cospi_p16_m16); + const __m256i s2_23_3 = _mm256_madd_epi16(s2_23_1, k__cospi_p16_m16); + const __m256i s2_24_2 = _mm256_madd_epi16(s2_23_0, k__cospi_p16_p16); + const __m256i s2_24_3 = _mm256_madd_epi16(s2_23_1, k__cospi_p16_p16); + const __m256i s2_25_2 = _mm256_madd_epi16(s2_22_0, k__cospi_p16_p16); + const __m256i s2_25_3 = _mm256_madd_epi16(s2_22_1, k__cospi_p16_p16); + const __m256i s2_26_2 = _mm256_madd_epi16(s2_21_0, k__cospi_p16_p16); + const __m256i s2_26_3 = _mm256_madd_epi16(s2_21_1, k__cospi_p16_p16); + const __m256i s2_27_2 = _mm256_madd_epi16(s2_20_0, k__cospi_p16_p16); + const __m256i s2_27_3 = _mm256_madd_epi16(s2_20_1, k__cospi_p16_p16); + // dct_const_round_shift + const __m256i s2_20_4 = _mm256_add_epi32(s2_20_2, k__DCT_CONST_ROUNDING); + const __m256i s2_20_5 = _mm256_add_epi32(s2_20_3, k__DCT_CONST_ROUNDING); + const __m256i s2_21_4 = _mm256_add_epi32(s2_21_2, k__DCT_CONST_ROUNDING); + const __m256i s2_21_5 = _mm256_add_epi32(s2_21_3, k__DCT_CONST_ROUNDING); + const __m256i s2_22_4 = _mm256_add_epi32(s2_22_2, k__DCT_CONST_ROUNDING); + const __m256i s2_22_5 = _mm256_add_epi32(s2_22_3, k__DCT_CONST_ROUNDING); + const __m256i s2_23_4 = _mm256_add_epi32(s2_23_2, k__DCT_CONST_ROUNDING); + const __m256i s2_23_5 = _mm256_add_epi32(s2_23_3, k__DCT_CONST_ROUNDING); + const __m256i s2_24_4 = _mm256_add_epi32(s2_24_2, k__DCT_CONST_ROUNDING); + const __m256i s2_24_5 = _mm256_add_epi32(s2_24_3, k__DCT_CONST_ROUNDING); + const __m256i s2_25_4 = _mm256_add_epi32(s2_25_2, k__DCT_CONST_ROUNDING); + const __m256i s2_25_5 = _mm256_add_epi32(s2_25_3, k__DCT_CONST_ROUNDING); + const __m256i s2_26_4 = _mm256_add_epi32(s2_26_2, k__DCT_CONST_ROUNDING); + const __m256i s2_26_5 = _mm256_add_epi32(s2_26_3, k__DCT_CONST_ROUNDING); + const __m256i s2_27_4 = _mm256_add_epi32(s2_27_2, k__DCT_CONST_ROUNDING); + const __m256i s2_27_5 = _mm256_add_epi32(s2_27_3, k__DCT_CONST_ROUNDING); + const __m256i s2_20_6 = _mm256_srai_epi32(s2_20_4, DCT_CONST_BITS); + const __m256i s2_20_7 = _mm256_srai_epi32(s2_20_5, DCT_CONST_BITS); + const __m256i s2_21_6 = _mm256_srai_epi32(s2_21_4, DCT_CONST_BITS); + const __m256i s2_21_7 = _mm256_srai_epi32(s2_21_5, DCT_CONST_BITS); + const __m256i s2_22_6 = _mm256_srai_epi32(s2_22_4, DCT_CONST_BITS); + const __m256i s2_22_7 = _mm256_srai_epi32(s2_22_5, DCT_CONST_BITS); + const __m256i s2_23_6 = _mm256_srai_epi32(s2_23_4, DCT_CONST_BITS); + const __m256i s2_23_7 = _mm256_srai_epi32(s2_23_5, DCT_CONST_BITS); + const __m256i s2_24_6 = _mm256_srai_epi32(s2_24_4, DCT_CONST_BITS); + const __m256i s2_24_7 = _mm256_srai_epi32(s2_24_5, DCT_CONST_BITS); + const __m256i s2_25_6 = _mm256_srai_epi32(s2_25_4, DCT_CONST_BITS); + const __m256i s2_25_7 = _mm256_srai_epi32(s2_25_5, DCT_CONST_BITS); + const __m256i s2_26_6 = _mm256_srai_epi32(s2_26_4, DCT_CONST_BITS); + const __m256i s2_26_7 = _mm256_srai_epi32(s2_26_5, DCT_CONST_BITS); + const __m256i s2_27_6 = _mm256_srai_epi32(s2_27_4, DCT_CONST_BITS); + const __m256i s2_27_7 = _mm256_srai_epi32(s2_27_5, DCT_CONST_BITS); + // Combine + step2[20] = _mm256_packs_epi32(s2_20_6, s2_20_7); + step2[21] = _mm256_packs_epi32(s2_21_6, s2_21_7); + step2[22] = _mm256_packs_epi32(s2_22_6, s2_22_7); + step2[23] = _mm256_packs_epi32(s2_23_6, s2_23_7); + step2[24] = _mm256_packs_epi32(s2_24_6, s2_24_7); + step2[25] = _mm256_packs_epi32(s2_25_6, s2_25_7); + step2[26] = _mm256_packs_epi32(s2_26_6, s2_26_7); + step2[27] = _mm256_packs_epi32(s2_27_6, s2_27_7); + } + +#if !FDCT32x32_HIGH_PRECISION + // dump the magnitude by half, hence the intermediate values are within + // the range of 16 bits. + if (1 == pass) { + __m256i s3_00_0 = _mm256_cmpgt_epi16(kZero,step2[ 0]); + __m256i s3_01_0 = _mm256_cmpgt_epi16(kZero,step2[ 1]); + __m256i s3_02_0 = _mm256_cmpgt_epi16(kZero,step2[ 2]); + __m256i s3_03_0 = _mm256_cmpgt_epi16(kZero,step2[ 3]); + __m256i s3_04_0 = _mm256_cmpgt_epi16(kZero,step2[ 4]); + __m256i s3_05_0 = _mm256_cmpgt_epi16(kZero,step2[ 5]); + __m256i s3_06_0 = _mm256_cmpgt_epi16(kZero,step2[ 6]); + __m256i s3_07_0 = _mm256_cmpgt_epi16(kZero,step2[ 7]); + __m256i s2_08_0 = _mm256_cmpgt_epi16(kZero,step2[ 8]); + __m256i s2_09_0 = _mm256_cmpgt_epi16(kZero,step2[ 9]); + __m256i s3_10_0 = _mm256_cmpgt_epi16(kZero,step2[10]); + __m256i s3_11_0 = _mm256_cmpgt_epi16(kZero,step2[11]); + __m256i s3_12_0 = _mm256_cmpgt_epi16(kZero,step2[12]); + __m256i s3_13_0 = _mm256_cmpgt_epi16(kZero,step2[13]); + __m256i s2_14_0 = _mm256_cmpgt_epi16(kZero,step2[14]); + __m256i s2_15_0 = _mm256_cmpgt_epi16(kZero,step2[15]); + __m256i s3_16_0 = _mm256_cmpgt_epi16(kZero,step1[16]); + __m256i s3_17_0 = _mm256_cmpgt_epi16(kZero,step1[17]); + __m256i s3_18_0 = _mm256_cmpgt_epi16(kZero,step1[18]); + __m256i s3_19_0 = _mm256_cmpgt_epi16(kZero,step1[19]); + __m256i s3_20_0 = _mm256_cmpgt_epi16(kZero,step2[20]); + __m256i s3_21_0 = _mm256_cmpgt_epi16(kZero,step2[21]); + __m256i s3_22_0 = _mm256_cmpgt_epi16(kZero,step2[22]); + __m256i s3_23_0 = _mm256_cmpgt_epi16(kZero,step2[23]); + __m256i s3_24_0 = _mm256_cmpgt_epi16(kZero,step2[24]); + __m256i s3_25_0 = _mm256_cmpgt_epi16(kZero,step2[25]); + __m256i s3_26_0 = _mm256_cmpgt_epi16(kZero,step2[26]); + __m256i s3_27_0 = _mm256_cmpgt_epi16(kZero,step2[27]); + __m256i s3_28_0 = _mm256_cmpgt_epi16(kZero,step1[28]); + __m256i s3_29_0 = _mm256_cmpgt_epi16(kZero,step1[29]); + __m256i s3_30_0 = _mm256_cmpgt_epi16(kZero,step1[30]); + __m256i s3_31_0 = _mm256_cmpgt_epi16(kZero,step1[31]); + + step2[ 0] = _mm256_sub_epi16(step2[ 0], s3_00_0); + step2[ 1] = _mm256_sub_epi16(step2[ 1], s3_01_0); + step2[ 2] = _mm256_sub_epi16(step2[ 2], s3_02_0); + step2[ 3] = _mm256_sub_epi16(step2[ 3], s3_03_0); + step2[ 4] = _mm256_sub_epi16(step2[ 4], s3_04_0); + step2[ 5] = _mm256_sub_epi16(step2[ 5], s3_05_0); + step2[ 6] = _mm256_sub_epi16(step2[ 6], s3_06_0); + step2[ 7] = _mm256_sub_epi16(step2[ 7], s3_07_0); + step2[ 8] = _mm256_sub_epi16(step2[ 8], s2_08_0); + step2[ 9] = _mm256_sub_epi16(step2[ 9], s2_09_0); + step2[10] = _mm256_sub_epi16(step2[10], s3_10_0); + step2[11] = _mm256_sub_epi16(step2[11], s3_11_0); + step2[12] = _mm256_sub_epi16(step2[12], s3_12_0); + step2[13] = _mm256_sub_epi16(step2[13], s3_13_0); + step2[14] = _mm256_sub_epi16(step2[14], s2_14_0); + step2[15] = _mm256_sub_epi16(step2[15], s2_15_0); + step1[16] = _mm256_sub_epi16(step1[16], s3_16_0); + step1[17] = _mm256_sub_epi16(step1[17], s3_17_0); + step1[18] = _mm256_sub_epi16(step1[18], s3_18_0); + step1[19] = _mm256_sub_epi16(step1[19], s3_19_0); + step2[20] = _mm256_sub_epi16(step2[20], s3_20_0); + step2[21] = _mm256_sub_epi16(step2[21], s3_21_0); + step2[22] = _mm256_sub_epi16(step2[22], s3_22_0); + step2[23] = _mm256_sub_epi16(step2[23], s3_23_0); + step2[24] = _mm256_sub_epi16(step2[24], s3_24_0); + step2[25] = _mm256_sub_epi16(step2[25], s3_25_0); + step2[26] = _mm256_sub_epi16(step2[26], s3_26_0); + step2[27] = _mm256_sub_epi16(step2[27], s3_27_0); + step1[28] = _mm256_sub_epi16(step1[28], s3_28_0); + step1[29] = _mm256_sub_epi16(step1[29], s3_29_0); + step1[30] = _mm256_sub_epi16(step1[30], s3_30_0); + step1[31] = _mm256_sub_epi16(step1[31], s3_31_0); + + step2[ 0] = _mm256_add_epi16(step2[ 0], kOne); + step2[ 1] = _mm256_add_epi16(step2[ 1], kOne); + step2[ 2] = _mm256_add_epi16(step2[ 2], kOne); + step2[ 3] = _mm256_add_epi16(step2[ 3], kOne); + step2[ 4] = _mm256_add_epi16(step2[ 4], kOne); + step2[ 5] = _mm256_add_epi16(step2[ 5], kOne); + step2[ 6] = _mm256_add_epi16(step2[ 6], kOne); + step2[ 7] = _mm256_add_epi16(step2[ 7], kOne); + step2[ 8] = _mm256_add_epi16(step2[ 8], kOne); + step2[ 9] = _mm256_add_epi16(step2[ 9], kOne); + step2[10] = _mm256_add_epi16(step2[10], kOne); + step2[11] = _mm256_add_epi16(step2[11], kOne); + step2[12] = _mm256_add_epi16(step2[12], kOne); + step2[13] = _mm256_add_epi16(step2[13], kOne); + step2[14] = _mm256_add_epi16(step2[14], kOne); + step2[15] = _mm256_add_epi16(step2[15], kOne); + step1[16] = _mm256_add_epi16(step1[16], kOne); + step1[17] = _mm256_add_epi16(step1[17], kOne); + step1[18] = _mm256_add_epi16(step1[18], kOne); + step1[19] = _mm256_add_epi16(step1[19], kOne); + step2[20] = _mm256_add_epi16(step2[20], kOne); + step2[21] = _mm256_add_epi16(step2[21], kOne); + step2[22] = _mm256_add_epi16(step2[22], kOne); + step2[23] = _mm256_add_epi16(step2[23], kOne); + step2[24] = _mm256_add_epi16(step2[24], kOne); + step2[25] = _mm256_add_epi16(step2[25], kOne); + step2[26] = _mm256_add_epi16(step2[26], kOne); + step2[27] = _mm256_add_epi16(step2[27], kOne); + step1[28] = _mm256_add_epi16(step1[28], kOne); + step1[29] = _mm256_add_epi16(step1[29], kOne); + step1[30] = _mm256_add_epi16(step1[30], kOne); + step1[31] = _mm256_add_epi16(step1[31], kOne); + + step2[ 0] = _mm256_srai_epi16(step2[ 0], 2); + step2[ 1] = _mm256_srai_epi16(step2[ 1], 2); + step2[ 2] = _mm256_srai_epi16(step2[ 2], 2); + step2[ 3] = _mm256_srai_epi16(step2[ 3], 2); + step2[ 4] = _mm256_srai_epi16(step2[ 4], 2); + step2[ 5] = _mm256_srai_epi16(step2[ 5], 2); + step2[ 6] = _mm256_srai_epi16(step2[ 6], 2); + step2[ 7] = _mm256_srai_epi16(step2[ 7], 2); + step2[ 8] = _mm256_srai_epi16(step2[ 8], 2); + step2[ 9] = _mm256_srai_epi16(step2[ 9], 2); + step2[10] = _mm256_srai_epi16(step2[10], 2); + step2[11] = _mm256_srai_epi16(step2[11], 2); + step2[12] = _mm256_srai_epi16(step2[12], 2); + step2[13] = _mm256_srai_epi16(step2[13], 2); + step2[14] = _mm256_srai_epi16(step2[14], 2); + step2[15] = _mm256_srai_epi16(step2[15], 2); + step1[16] = _mm256_srai_epi16(step1[16], 2); + step1[17] = _mm256_srai_epi16(step1[17], 2); + step1[18] = _mm256_srai_epi16(step1[18], 2); + step1[19] = _mm256_srai_epi16(step1[19], 2); + step2[20] = _mm256_srai_epi16(step2[20], 2); + step2[21] = _mm256_srai_epi16(step2[21], 2); + step2[22] = _mm256_srai_epi16(step2[22], 2); + step2[23] = _mm256_srai_epi16(step2[23], 2); + step2[24] = _mm256_srai_epi16(step2[24], 2); + step2[25] = _mm256_srai_epi16(step2[25], 2); + step2[26] = _mm256_srai_epi16(step2[26], 2); + step2[27] = _mm256_srai_epi16(step2[27], 2); + step1[28] = _mm256_srai_epi16(step1[28], 2); + step1[29] = _mm256_srai_epi16(step1[29], 2); + step1[30] = _mm256_srai_epi16(step1[30], 2); + step1[31] = _mm256_srai_epi16(step1[31], 2); + } +#endif + +#if FDCT32x32_HIGH_PRECISION + if (pass == 0) { +#endif + // Stage 3 + { + step3[0] = _mm256_add_epi16(step2[(8 - 1)], step2[0]); + step3[1] = _mm256_add_epi16(step2[(8 - 2)], step2[1]); + step3[2] = _mm256_add_epi16(step2[(8 - 3)], step2[2]); + step3[3] = _mm256_add_epi16(step2[(8 - 4)], step2[3]); + step3[4] = _mm256_sub_epi16(step2[(8 - 5)], step2[4]); + step3[5] = _mm256_sub_epi16(step2[(8 - 6)], step2[5]); + step3[6] = _mm256_sub_epi16(step2[(8 - 7)], step2[6]); + step3[7] = _mm256_sub_epi16(step2[(8 - 8)], step2[7]); + } + { + const __m256i s3_10_0 = _mm256_unpacklo_epi16(step2[13], step2[10]); + const __m256i s3_10_1 = _mm256_unpackhi_epi16(step2[13], step2[10]); + const __m256i s3_11_0 = _mm256_unpacklo_epi16(step2[12], step2[11]); + const __m256i s3_11_1 = _mm256_unpackhi_epi16(step2[12], step2[11]); + const __m256i s3_10_2 = _mm256_madd_epi16(s3_10_0, k__cospi_p16_m16); + const __m256i s3_10_3 = _mm256_madd_epi16(s3_10_1, k__cospi_p16_m16); + const __m256i s3_11_2 = _mm256_madd_epi16(s3_11_0, k__cospi_p16_m16); + const __m256i s3_11_3 = _mm256_madd_epi16(s3_11_1, k__cospi_p16_m16); + const __m256i s3_12_2 = _mm256_madd_epi16(s3_11_0, k__cospi_p16_p16); + const __m256i s3_12_3 = _mm256_madd_epi16(s3_11_1, k__cospi_p16_p16); + const __m256i s3_13_2 = _mm256_madd_epi16(s3_10_0, k__cospi_p16_p16); + const __m256i s3_13_3 = _mm256_madd_epi16(s3_10_1, k__cospi_p16_p16); + // dct_const_round_shift + const __m256i s3_10_4 = _mm256_add_epi32(s3_10_2, k__DCT_CONST_ROUNDING); + const __m256i s3_10_5 = _mm256_add_epi32(s3_10_3, k__DCT_CONST_ROUNDING); + const __m256i s3_11_4 = _mm256_add_epi32(s3_11_2, k__DCT_CONST_ROUNDING); + const __m256i s3_11_5 = _mm256_add_epi32(s3_11_3, k__DCT_CONST_ROUNDING); + const __m256i s3_12_4 = _mm256_add_epi32(s3_12_2, k__DCT_CONST_ROUNDING); + const __m256i s3_12_5 = _mm256_add_epi32(s3_12_3, k__DCT_CONST_ROUNDING); + const __m256i s3_13_4 = _mm256_add_epi32(s3_13_2, k__DCT_CONST_ROUNDING); + const __m256i s3_13_5 = _mm256_add_epi32(s3_13_3, k__DCT_CONST_ROUNDING); + const __m256i s3_10_6 = _mm256_srai_epi32(s3_10_4, DCT_CONST_BITS); + const __m256i s3_10_7 = _mm256_srai_epi32(s3_10_5, DCT_CONST_BITS); + const __m256i s3_11_6 = _mm256_srai_epi32(s3_11_4, DCT_CONST_BITS); + const __m256i s3_11_7 = _mm256_srai_epi32(s3_11_5, DCT_CONST_BITS); + const __m256i s3_12_6 = _mm256_srai_epi32(s3_12_4, DCT_CONST_BITS); + const __m256i s3_12_7 = _mm256_srai_epi32(s3_12_5, DCT_CONST_BITS); + const __m256i s3_13_6 = _mm256_srai_epi32(s3_13_4, DCT_CONST_BITS); + const __m256i s3_13_7 = _mm256_srai_epi32(s3_13_5, DCT_CONST_BITS); + // Combine + step3[10] = _mm256_packs_epi32(s3_10_6, s3_10_7); + step3[11] = _mm256_packs_epi32(s3_11_6, s3_11_7); + step3[12] = _mm256_packs_epi32(s3_12_6, s3_12_7); + step3[13] = _mm256_packs_epi32(s3_13_6, s3_13_7); + } + { + step3[16] = _mm256_add_epi16(step2[23], step1[16]); + step3[17] = _mm256_add_epi16(step2[22], step1[17]); + step3[18] = _mm256_add_epi16(step2[21], step1[18]); + step3[19] = _mm256_add_epi16(step2[20], step1[19]); + step3[20] = _mm256_sub_epi16(step1[19], step2[20]); + step3[21] = _mm256_sub_epi16(step1[18], step2[21]); + step3[22] = _mm256_sub_epi16(step1[17], step2[22]); + step3[23] = _mm256_sub_epi16(step1[16], step2[23]); + step3[24] = _mm256_sub_epi16(step1[31], step2[24]); + step3[25] = _mm256_sub_epi16(step1[30], step2[25]); + step3[26] = _mm256_sub_epi16(step1[29], step2[26]); + step3[27] = _mm256_sub_epi16(step1[28], step2[27]); + step3[28] = _mm256_add_epi16(step2[27], step1[28]); + step3[29] = _mm256_add_epi16(step2[26], step1[29]); + step3[30] = _mm256_add_epi16(step2[25], step1[30]); + step3[31] = _mm256_add_epi16(step2[24], step1[31]); + } + + // Stage 4 + { + step1[ 0] = _mm256_add_epi16(step3[ 3], step3[ 0]); + step1[ 1] = _mm256_add_epi16(step3[ 2], step3[ 1]); + step1[ 2] = _mm256_sub_epi16(step3[ 1], step3[ 2]); + step1[ 3] = _mm256_sub_epi16(step3[ 0], step3[ 3]); + step1[ 8] = _mm256_add_epi16(step3[11], step2[ 8]); + step1[ 9] = _mm256_add_epi16(step3[10], step2[ 9]); + step1[10] = _mm256_sub_epi16(step2[ 9], step3[10]); + step1[11] = _mm256_sub_epi16(step2[ 8], step3[11]); + step1[12] = _mm256_sub_epi16(step2[15], step3[12]); + step1[13] = _mm256_sub_epi16(step2[14], step3[13]); + step1[14] = _mm256_add_epi16(step3[13], step2[14]); + step1[15] = _mm256_add_epi16(step3[12], step2[15]); + } + { + const __m256i s1_05_0 = _mm256_unpacklo_epi16(step3[6], step3[5]); + const __m256i s1_05_1 = _mm256_unpackhi_epi16(step3[6], step3[5]); + const __m256i s1_05_2 = _mm256_madd_epi16(s1_05_0, k__cospi_p16_m16); + const __m256i s1_05_3 = _mm256_madd_epi16(s1_05_1, k__cospi_p16_m16); + const __m256i s1_06_2 = _mm256_madd_epi16(s1_05_0, k__cospi_p16_p16); + const __m256i s1_06_3 = _mm256_madd_epi16(s1_05_1, k__cospi_p16_p16); + // dct_const_round_shift + const __m256i s1_05_4 = _mm256_add_epi32(s1_05_2, k__DCT_CONST_ROUNDING); + const __m256i s1_05_5 = _mm256_add_epi32(s1_05_3, k__DCT_CONST_ROUNDING); + const __m256i s1_06_4 = _mm256_add_epi32(s1_06_2, k__DCT_CONST_ROUNDING); + const __m256i s1_06_5 = _mm256_add_epi32(s1_06_3, k__DCT_CONST_ROUNDING); + const __m256i s1_05_6 = _mm256_srai_epi32(s1_05_4, DCT_CONST_BITS); + const __m256i s1_05_7 = _mm256_srai_epi32(s1_05_5, DCT_CONST_BITS); + const __m256i s1_06_6 = _mm256_srai_epi32(s1_06_4, DCT_CONST_BITS); + const __m256i s1_06_7 = _mm256_srai_epi32(s1_06_5, DCT_CONST_BITS); + // Combine + step1[5] = _mm256_packs_epi32(s1_05_6, s1_05_7); + step1[6] = _mm256_packs_epi32(s1_06_6, s1_06_7); + } + { + const __m256i s1_18_0 = _mm256_unpacklo_epi16(step3[18], step3[29]); + const __m256i s1_18_1 = _mm256_unpackhi_epi16(step3[18], step3[29]); + const __m256i s1_19_0 = _mm256_unpacklo_epi16(step3[19], step3[28]); + const __m256i s1_19_1 = _mm256_unpackhi_epi16(step3[19], step3[28]); + const __m256i s1_20_0 = _mm256_unpacklo_epi16(step3[20], step3[27]); + const __m256i s1_20_1 = _mm256_unpackhi_epi16(step3[20], step3[27]); + const __m256i s1_21_0 = _mm256_unpacklo_epi16(step3[21], step3[26]); + const __m256i s1_21_1 = _mm256_unpackhi_epi16(step3[21], step3[26]); + const __m256i s1_18_2 = _mm256_madd_epi16(s1_18_0, k__cospi_m08_p24); + const __m256i s1_18_3 = _mm256_madd_epi16(s1_18_1, k__cospi_m08_p24); + const __m256i s1_19_2 = _mm256_madd_epi16(s1_19_0, k__cospi_m08_p24); + const __m256i s1_19_3 = _mm256_madd_epi16(s1_19_1, k__cospi_m08_p24); + const __m256i s1_20_2 = _mm256_madd_epi16(s1_20_0, k__cospi_m24_m08); + const __m256i s1_20_3 = _mm256_madd_epi16(s1_20_1, k__cospi_m24_m08); + const __m256i s1_21_2 = _mm256_madd_epi16(s1_21_0, k__cospi_m24_m08); + const __m256i s1_21_3 = _mm256_madd_epi16(s1_21_1, k__cospi_m24_m08); + const __m256i s1_26_2 = _mm256_madd_epi16(s1_21_0, k__cospi_m08_p24); + const __m256i s1_26_3 = _mm256_madd_epi16(s1_21_1, k__cospi_m08_p24); + const __m256i s1_27_2 = _mm256_madd_epi16(s1_20_0, k__cospi_m08_p24); + const __m256i s1_27_3 = _mm256_madd_epi16(s1_20_1, k__cospi_m08_p24); + const __m256i s1_28_2 = _mm256_madd_epi16(s1_19_0, k__cospi_p24_p08); + const __m256i s1_28_3 = _mm256_madd_epi16(s1_19_1, k__cospi_p24_p08); + const __m256i s1_29_2 = _mm256_madd_epi16(s1_18_0, k__cospi_p24_p08); + const __m256i s1_29_3 = _mm256_madd_epi16(s1_18_1, k__cospi_p24_p08); + // dct_const_round_shift + const __m256i s1_18_4 = _mm256_add_epi32(s1_18_2, k__DCT_CONST_ROUNDING); + const __m256i s1_18_5 = _mm256_add_epi32(s1_18_3, k__DCT_CONST_ROUNDING); + const __m256i s1_19_4 = _mm256_add_epi32(s1_19_2, k__DCT_CONST_ROUNDING); + const __m256i s1_19_5 = _mm256_add_epi32(s1_19_3, k__DCT_CONST_ROUNDING); + const __m256i s1_20_4 = _mm256_add_epi32(s1_20_2, k__DCT_CONST_ROUNDING); + const __m256i s1_20_5 = _mm256_add_epi32(s1_20_3, k__DCT_CONST_ROUNDING); + const __m256i s1_21_4 = _mm256_add_epi32(s1_21_2, k__DCT_CONST_ROUNDING); + const __m256i s1_21_5 = _mm256_add_epi32(s1_21_3, k__DCT_CONST_ROUNDING); + const __m256i s1_26_4 = _mm256_add_epi32(s1_26_2, k__DCT_CONST_ROUNDING); + const __m256i s1_26_5 = _mm256_add_epi32(s1_26_3, k__DCT_CONST_ROUNDING); + const __m256i s1_27_4 = _mm256_add_epi32(s1_27_2, k__DCT_CONST_ROUNDING); + const __m256i s1_27_5 = _mm256_add_epi32(s1_27_3, k__DCT_CONST_ROUNDING); + const __m256i s1_28_4 = _mm256_add_epi32(s1_28_2, k__DCT_CONST_ROUNDING); + const __m256i s1_28_5 = _mm256_add_epi32(s1_28_3, k__DCT_CONST_ROUNDING); + const __m256i s1_29_4 = _mm256_add_epi32(s1_29_2, k__DCT_CONST_ROUNDING); + const __m256i s1_29_5 = _mm256_add_epi32(s1_29_3, k__DCT_CONST_ROUNDING); + const __m256i s1_18_6 = _mm256_srai_epi32(s1_18_4, DCT_CONST_BITS); + const __m256i s1_18_7 = _mm256_srai_epi32(s1_18_5, DCT_CONST_BITS); + const __m256i s1_19_6 = _mm256_srai_epi32(s1_19_4, DCT_CONST_BITS); + const __m256i s1_19_7 = _mm256_srai_epi32(s1_19_5, DCT_CONST_BITS); + const __m256i s1_20_6 = _mm256_srai_epi32(s1_20_4, DCT_CONST_BITS); + const __m256i s1_20_7 = _mm256_srai_epi32(s1_20_5, DCT_CONST_BITS); + const __m256i s1_21_6 = _mm256_srai_epi32(s1_21_4, DCT_CONST_BITS); + const __m256i s1_21_7 = _mm256_srai_epi32(s1_21_5, DCT_CONST_BITS); + const __m256i s1_26_6 = _mm256_srai_epi32(s1_26_4, DCT_CONST_BITS); + const __m256i s1_26_7 = _mm256_srai_epi32(s1_26_5, DCT_CONST_BITS); + const __m256i s1_27_6 = _mm256_srai_epi32(s1_27_4, DCT_CONST_BITS); + const __m256i s1_27_7 = _mm256_srai_epi32(s1_27_5, DCT_CONST_BITS); + const __m256i s1_28_6 = _mm256_srai_epi32(s1_28_4, DCT_CONST_BITS); + const __m256i s1_28_7 = _mm256_srai_epi32(s1_28_5, DCT_CONST_BITS); + const __m256i s1_29_6 = _mm256_srai_epi32(s1_29_4, DCT_CONST_BITS); + const __m256i s1_29_7 = _mm256_srai_epi32(s1_29_5, DCT_CONST_BITS); + // Combine + step1[18] = _mm256_packs_epi32(s1_18_6, s1_18_7); + step1[19] = _mm256_packs_epi32(s1_19_6, s1_19_7); + step1[20] = _mm256_packs_epi32(s1_20_6, s1_20_7); + step1[21] = _mm256_packs_epi32(s1_21_6, s1_21_7); + step1[26] = _mm256_packs_epi32(s1_26_6, s1_26_7); + step1[27] = _mm256_packs_epi32(s1_27_6, s1_27_7); + step1[28] = _mm256_packs_epi32(s1_28_6, s1_28_7); + step1[29] = _mm256_packs_epi32(s1_29_6, s1_29_7); + } + // Stage 5 + { + step2[4] = _mm256_add_epi16(step1[5], step3[4]); + step2[5] = _mm256_sub_epi16(step3[4], step1[5]); + step2[6] = _mm256_sub_epi16(step3[7], step1[6]); + step2[7] = _mm256_add_epi16(step1[6], step3[7]); + } + { + const __m256i out_00_0 = _mm256_unpacklo_epi16(step1[0], step1[1]); + const __m256i out_00_1 = _mm256_unpackhi_epi16(step1[0], step1[1]); + const __m256i out_08_0 = _mm256_unpacklo_epi16(step1[2], step1[3]); + const __m256i out_08_1 = _mm256_unpackhi_epi16(step1[2], step1[3]); + const __m256i out_00_2 = _mm256_madd_epi16(out_00_0, k__cospi_p16_p16); + const __m256i out_00_3 = _mm256_madd_epi16(out_00_1, k__cospi_p16_p16); + const __m256i out_16_2 = _mm256_madd_epi16(out_00_0, k__cospi_p16_m16); + const __m256i out_16_3 = _mm256_madd_epi16(out_00_1, k__cospi_p16_m16); + const __m256i out_08_2 = _mm256_madd_epi16(out_08_0, k__cospi_p24_p08); + const __m256i out_08_3 = _mm256_madd_epi16(out_08_1, k__cospi_p24_p08); + const __m256i out_24_2 = _mm256_madd_epi16(out_08_0, k__cospi_m08_p24); + const __m256i out_24_3 = _mm256_madd_epi16(out_08_1, k__cospi_m08_p24); + // dct_const_round_shift + const __m256i out_00_4 = _mm256_add_epi32(out_00_2, k__DCT_CONST_ROUNDING); + const __m256i out_00_5 = _mm256_add_epi32(out_00_3, k__DCT_CONST_ROUNDING); + const __m256i out_16_4 = _mm256_add_epi32(out_16_2, k__DCT_CONST_ROUNDING); + const __m256i out_16_5 = _mm256_add_epi32(out_16_3, k__DCT_CONST_ROUNDING); + const __m256i out_08_4 = _mm256_add_epi32(out_08_2, k__DCT_CONST_ROUNDING); + const __m256i out_08_5 = _mm256_add_epi32(out_08_3, k__DCT_CONST_ROUNDING); + const __m256i out_24_4 = _mm256_add_epi32(out_24_2, k__DCT_CONST_ROUNDING); + const __m256i out_24_5 = _mm256_add_epi32(out_24_3, k__DCT_CONST_ROUNDING); + const __m256i out_00_6 = _mm256_srai_epi32(out_00_4, DCT_CONST_BITS); + const __m256i out_00_7 = _mm256_srai_epi32(out_00_5, DCT_CONST_BITS); + const __m256i out_16_6 = _mm256_srai_epi32(out_16_4, DCT_CONST_BITS); + const __m256i out_16_7 = _mm256_srai_epi32(out_16_5, DCT_CONST_BITS); + const __m256i out_08_6 = _mm256_srai_epi32(out_08_4, DCT_CONST_BITS); + const __m256i out_08_7 = _mm256_srai_epi32(out_08_5, DCT_CONST_BITS); + const __m256i out_24_6 = _mm256_srai_epi32(out_24_4, DCT_CONST_BITS); + const __m256i out_24_7 = _mm256_srai_epi32(out_24_5, DCT_CONST_BITS); + // Combine + out[ 0] = _mm256_packs_epi32(out_00_6, out_00_7); + out[16] = _mm256_packs_epi32(out_16_6, out_16_7); + out[ 8] = _mm256_packs_epi32(out_08_6, out_08_7); + out[24] = _mm256_packs_epi32(out_24_6, out_24_7); + } + { + const __m256i s2_09_0 = _mm256_unpacklo_epi16(step1[ 9], step1[14]); + const __m256i s2_09_1 = _mm256_unpackhi_epi16(step1[ 9], step1[14]); + const __m256i s2_10_0 = _mm256_unpacklo_epi16(step1[10], step1[13]); + const __m256i s2_10_1 = _mm256_unpackhi_epi16(step1[10], step1[13]); + const __m256i s2_09_2 = _mm256_madd_epi16(s2_09_0, k__cospi_m08_p24); + const __m256i s2_09_3 = _mm256_madd_epi16(s2_09_1, k__cospi_m08_p24); + const __m256i s2_10_2 = _mm256_madd_epi16(s2_10_0, k__cospi_m24_m08); + const __m256i s2_10_3 = _mm256_madd_epi16(s2_10_1, k__cospi_m24_m08); + const __m256i s2_13_2 = _mm256_madd_epi16(s2_10_0, k__cospi_m08_p24); + const __m256i s2_13_3 = _mm256_madd_epi16(s2_10_1, k__cospi_m08_p24); + const __m256i s2_14_2 = _mm256_madd_epi16(s2_09_0, k__cospi_p24_p08); + const __m256i s2_14_3 = _mm256_madd_epi16(s2_09_1, k__cospi_p24_p08); + // dct_const_round_shift + const __m256i s2_09_4 = _mm256_add_epi32(s2_09_2, k__DCT_CONST_ROUNDING); + const __m256i s2_09_5 = _mm256_add_epi32(s2_09_3, k__DCT_CONST_ROUNDING); + const __m256i s2_10_4 = _mm256_add_epi32(s2_10_2, k__DCT_CONST_ROUNDING); + const __m256i s2_10_5 = _mm256_add_epi32(s2_10_3, k__DCT_CONST_ROUNDING); + const __m256i s2_13_4 = _mm256_add_epi32(s2_13_2, k__DCT_CONST_ROUNDING); + const __m256i s2_13_5 = _mm256_add_epi32(s2_13_3, k__DCT_CONST_ROUNDING); + const __m256i s2_14_4 = _mm256_add_epi32(s2_14_2, k__DCT_CONST_ROUNDING); + const __m256i s2_14_5 = _mm256_add_epi32(s2_14_3, k__DCT_CONST_ROUNDING); + const __m256i s2_09_6 = _mm256_srai_epi32(s2_09_4, DCT_CONST_BITS); + const __m256i s2_09_7 = _mm256_srai_epi32(s2_09_5, DCT_CONST_BITS); + const __m256i s2_10_6 = _mm256_srai_epi32(s2_10_4, DCT_CONST_BITS); + const __m256i s2_10_7 = _mm256_srai_epi32(s2_10_5, DCT_CONST_BITS); + const __m256i s2_13_6 = _mm256_srai_epi32(s2_13_4, DCT_CONST_BITS); + const __m256i s2_13_7 = _mm256_srai_epi32(s2_13_5, DCT_CONST_BITS); + const __m256i s2_14_6 = _mm256_srai_epi32(s2_14_4, DCT_CONST_BITS); + const __m256i s2_14_7 = _mm256_srai_epi32(s2_14_5, DCT_CONST_BITS); + // Combine + step2[ 9] = _mm256_packs_epi32(s2_09_6, s2_09_7); + step2[10] = _mm256_packs_epi32(s2_10_6, s2_10_7); + step2[13] = _mm256_packs_epi32(s2_13_6, s2_13_7); + step2[14] = _mm256_packs_epi32(s2_14_6, s2_14_7); + } + { + step2[16] = _mm256_add_epi16(step1[19], step3[16]); + step2[17] = _mm256_add_epi16(step1[18], step3[17]); + step2[18] = _mm256_sub_epi16(step3[17], step1[18]); + step2[19] = _mm256_sub_epi16(step3[16], step1[19]); + step2[20] = _mm256_sub_epi16(step3[23], step1[20]); + step2[21] = _mm256_sub_epi16(step3[22], step1[21]); + step2[22] = _mm256_add_epi16(step1[21], step3[22]); + step2[23] = _mm256_add_epi16(step1[20], step3[23]); + step2[24] = _mm256_add_epi16(step1[27], step3[24]); + step2[25] = _mm256_add_epi16(step1[26], step3[25]); + step2[26] = _mm256_sub_epi16(step3[25], step1[26]); + step2[27] = _mm256_sub_epi16(step3[24], step1[27]); + step2[28] = _mm256_sub_epi16(step3[31], step1[28]); + step2[29] = _mm256_sub_epi16(step3[30], step1[29]); + step2[30] = _mm256_add_epi16(step1[29], step3[30]); + step2[31] = _mm256_add_epi16(step1[28], step3[31]); + } + // Stage 6 + { + const __m256i out_04_0 = _mm256_unpacklo_epi16(step2[4], step2[7]); + const __m256i out_04_1 = _mm256_unpackhi_epi16(step2[4], step2[7]); + const __m256i out_20_0 = _mm256_unpacklo_epi16(step2[5], step2[6]); + const __m256i out_20_1 = _mm256_unpackhi_epi16(step2[5], step2[6]); + const __m256i out_12_0 = _mm256_unpacklo_epi16(step2[5], step2[6]); + const __m256i out_12_1 = _mm256_unpackhi_epi16(step2[5], step2[6]); + const __m256i out_28_0 = _mm256_unpacklo_epi16(step2[4], step2[7]); + const __m256i out_28_1 = _mm256_unpackhi_epi16(step2[4], step2[7]); + const __m256i out_04_2 = _mm256_madd_epi16(out_04_0, k__cospi_p28_p04); + const __m256i out_04_3 = _mm256_madd_epi16(out_04_1, k__cospi_p28_p04); + const __m256i out_20_2 = _mm256_madd_epi16(out_20_0, k__cospi_p12_p20); + const __m256i out_20_3 = _mm256_madd_epi16(out_20_1, k__cospi_p12_p20); + const __m256i out_12_2 = _mm256_madd_epi16(out_12_0, k__cospi_m20_p12); + const __m256i out_12_3 = _mm256_madd_epi16(out_12_1, k__cospi_m20_p12); + const __m256i out_28_2 = _mm256_madd_epi16(out_28_0, k__cospi_m04_p28); + const __m256i out_28_3 = _mm256_madd_epi16(out_28_1, k__cospi_m04_p28); + // dct_const_round_shift + const __m256i out_04_4 = _mm256_add_epi32(out_04_2, k__DCT_CONST_ROUNDING); + const __m256i out_04_5 = _mm256_add_epi32(out_04_3, k__DCT_CONST_ROUNDING); + const __m256i out_20_4 = _mm256_add_epi32(out_20_2, k__DCT_CONST_ROUNDING); + const __m256i out_20_5 = _mm256_add_epi32(out_20_3, k__DCT_CONST_ROUNDING); + const __m256i out_12_4 = _mm256_add_epi32(out_12_2, k__DCT_CONST_ROUNDING); + const __m256i out_12_5 = _mm256_add_epi32(out_12_3, k__DCT_CONST_ROUNDING); + const __m256i out_28_4 = _mm256_add_epi32(out_28_2, k__DCT_CONST_ROUNDING); + const __m256i out_28_5 = _mm256_add_epi32(out_28_3, k__DCT_CONST_ROUNDING); + const __m256i out_04_6 = _mm256_srai_epi32(out_04_4, DCT_CONST_BITS); + const __m256i out_04_7 = _mm256_srai_epi32(out_04_5, DCT_CONST_BITS); + const __m256i out_20_6 = _mm256_srai_epi32(out_20_4, DCT_CONST_BITS); + const __m256i out_20_7 = _mm256_srai_epi32(out_20_5, DCT_CONST_BITS); + const __m256i out_12_6 = _mm256_srai_epi32(out_12_4, DCT_CONST_BITS); + const __m256i out_12_7 = _mm256_srai_epi32(out_12_5, DCT_CONST_BITS); + const __m256i out_28_6 = _mm256_srai_epi32(out_28_4, DCT_CONST_BITS); + const __m256i out_28_7 = _mm256_srai_epi32(out_28_5, DCT_CONST_BITS); + // Combine + out[ 4] = _mm256_packs_epi32(out_04_6, out_04_7); + out[20] = _mm256_packs_epi32(out_20_6, out_20_7); + out[12] = _mm256_packs_epi32(out_12_6, out_12_7); + out[28] = _mm256_packs_epi32(out_28_6, out_28_7); + } + { + step3[ 8] = _mm256_add_epi16(step2[ 9], step1[ 8]); + step3[ 9] = _mm256_sub_epi16(step1[ 8], step2[ 9]); + step3[10] = _mm256_sub_epi16(step1[11], step2[10]); + step3[11] = _mm256_add_epi16(step2[10], step1[11]); + step3[12] = _mm256_add_epi16(step2[13], step1[12]); + step3[13] = _mm256_sub_epi16(step1[12], step2[13]); + step3[14] = _mm256_sub_epi16(step1[15], step2[14]); + step3[15] = _mm256_add_epi16(step2[14], step1[15]); + } + { + const __m256i s3_17_0 = _mm256_unpacklo_epi16(step2[17], step2[30]); + const __m256i s3_17_1 = _mm256_unpackhi_epi16(step2[17], step2[30]); + const __m256i s3_18_0 = _mm256_unpacklo_epi16(step2[18], step2[29]); + const __m256i s3_18_1 = _mm256_unpackhi_epi16(step2[18], step2[29]); + const __m256i s3_21_0 = _mm256_unpacklo_epi16(step2[21], step2[26]); + const __m256i s3_21_1 = _mm256_unpackhi_epi16(step2[21], step2[26]); + const __m256i s3_22_0 = _mm256_unpacklo_epi16(step2[22], step2[25]); + const __m256i s3_22_1 = _mm256_unpackhi_epi16(step2[22], step2[25]); + const __m256i s3_17_2 = _mm256_madd_epi16(s3_17_0, k__cospi_m04_p28); + const __m256i s3_17_3 = _mm256_madd_epi16(s3_17_1, k__cospi_m04_p28); + const __m256i s3_18_2 = _mm256_madd_epi16(s3_18_0, k__cospi_m28_m04); + const __m256i s3_18_3 = _mm256_madd_epi16(s3_18_1, k__cospi_m28_m04); + const __m256i s3_21_2 = _mm256_madd_epi16(s3_21_0, k__cospi_m20_p12); + const __m256i s3_21_3 = _mm256_madd_epi16(s3_21_1, k__cospi_m20_p12); + const __m256i s3_22_2 = _mm256_madd_epi16(s3_22_0, k__cospi_m12_m20); + const __m256i s3_22_3 = _mm256_madd_epi16(s3_22_1, k__cospi_m12_m20); + const __m256i s3_25_2 = _mm256_madd_epi16(s3_22_0, k__cospi_m20_p12); + const __m256i s3_25_3 = _mm256_madd_epi16(s3_22_1, k__cospi_m20_p12); + const __m256i s3_26_2 = _mm256_madd_epi16(s3_21_0, k__cospi_p12_p20); + const __m256i s3_26_3 = _mm256_madd_epi16(s3_21_1, k__cospi_p12_p20); + const __m256i s3_29_2 = _mm256_madd_epi16(s3_18_0, k__cospi_m04_p28); + const __m256i s3_29_3 = _mm256_madd_epi16(s3_18_1, k__cospi_m04_p28); + const __m256i s3_30_2 = _mm256_madd_epi16(s3_17_0, k__cospi_p28_p04); + const __m256i s3_30_3 = _mm256_madd_epi16(s3_17_1, k__cospi_p28_p04); + // dct_const_round_shift + const __m256i s3_17_4 = _mm256_add_epi32(s3_17_2, k__DCT_CONST_ROUNDING); + const __m256i s3_17_5 = _mm256_add_epi32(s3_17_3, k__DCT_CONST_ROUNDING); + const __m256i s3_18_4 = _mm256_add_epi32(s3_18_2, k__DCT_CONST_ROUNDING); + const __m256i s3_18_5 = _mm256_add_epi32(s3_18_3, k__DCT_CONST_ROUNDING); + const __m256i s3_21_4 = _mm256_add_epi32(s3_21_2, k__DCT_CONST_ROUNDING); + const __m256i s3_21_5 = _mm256_add_epi32(s3_21_3, k__DCT_CONST_ROUNDING); + const __m256i s3_22_4 = _mm256_add_epi32(s3_22_2, k__DCT_CONST_ROUNDING); + const __m256i s3_22_5 = _mm256_add_epi32(s3_22_3, k__DCT_CONST_ROUNDING); + const __m256i s3_17_6 = _mm256_srai_epi32(s3_17_4, DCT_CONST_BITS); + const __m256i s3_17_7 = _mm256_srai_epi32(s3_17_5, DCT_CONST_BITS); + const __m256i s3_18_6 = _mm256_srai_epi32(s3_18_4, DCT_CONST_BITS); + const __m256i s3_18_7 = _mm256_srai_epi32(s3_18_5, DCT_CONST_BITS); + const __m256i s3_21_6 = _mm256_srai_epi32(s3_21_4, DCT_CONST_BITS); + const __m256i s3_21_7 = _mm256_srai_epi32(s3_21_5, DCT_CONST_BITS); + const __m256i s3_22_6 = _mm256_srai_epi32(s3_22_4, DCT_CONST_BITS); + const __m256i s3_22_7 = _mm256_srai_epi32(s3_22_5, DCT_CONST_BITS); + const __m256i s3_25_4 = _mm256_add_epi32(s3_25_2, k__DCT_CONST_ROUNDING); + const __m256i s3_25_5 = _mm256_add_epi32(s3_25_3, k__DCT_CONST_ROUNDING); + const __m256i s3_26_4 = _mm256_add_epi32(s3_26_2, k__DCT_CONST_ROUNDING); + const __m256i s3_26_5 = _mm256_add_epi32(s3_26_3, k__DCT_CONST_ROUNDING); + const __m256i s3_29_4 = _mm256_add_epi32(s3_29_2, k__DCT_CONST_ROUNDING); + const __m256i s3_29_5 = _mm256_add_epi32(s3_29_3, k__DCT_CONST_ROUNDING); + const __m256i s3_30_4 = _mm256_add_epi32(s3_30_2, k__DCT_CONST_ROUNDING); + const __m256i s3_30_5 = _mm256_add_epi32(s3_30_3, k__DCT_CONST_ROUNDING); + const __m256i s3_25_6 = _mm256_srai_epi32(s3_25_4, DCT_CONST_BITS); + const __m256i s3_25_7 = _mm256_srai_epi32(s3_25_5, DCT_CONST_BITS); + const __m256i s3_26_6 = _mm256_srai_epi32(s3_26_4, DCT_CONST_BITS); + const __m256i s3_26_7 = _mm256_srai_epi32(s3_26_5, DCT_CONST_BITS); + const __m256i s3_29_6 = _mm256_srai_epi32(s3_29_4, DCT_CONST_BITS); + const __m256i s3_29_7 = _mm256_srai_epi32(s3_29_5, DCT_CONST_BITS); + const __m256i s3_30_6 = _mm256_srai_epi32(s3_30_4, DCT_CONST_BITS); + const __m256i s3_30_7 = _mm256_srai_epi32(s3_30_5, DCT_CONST_BITS); + // Combine + step3[17] = _mm256_packs_epi32(s3_17_6, s3_17_7); + step3[18] = _mm256_packs_epi32(s3_18_6, s3_18_7); + step3[21] = _mm256_packs_epi32(s3_21_6, s3_21_7); + step3[22] = _mm256_packs_epi32(s3_22_6, s3_22_7); + // Combine + step3[25] = _mm256_packs_epi32(s3_25_6, s3_25_7); + step3[26] = _mm256_packs_epi32(s3_26_6, s3_26_7); + step3[29] = _mm256_packs_epi32(s3_29_6, s3_29_7); + step3[30] = _mm256_packs_epi32(s3_30_6, s3_30_7); + } + // Stage 7 + { + const __m256i out_02_0 = _mm256_unpacklo_epi16(step3[ 8], step3[15]); + const __m256i out_02_1 = _mm256_unpackhi_epi16(step3[ 8], step3[15]); + const __m256i out_18_0 = _mm256_unpacklo_epi16(step3[ 9], step3[14]); + const __m256i out_18_1 = _mm256_unpackhi_epi16(step3[ 9], step3[14]); + const __m256i out_10_0 = _mm256_unpacklo_epi16(step3[10], step3[13]); + const __m256i out_10_1 = _mm256_unpackhi_epi16(step3[10], step3[13]); + const __m256i out_26_0 = _mm256_unpacklo_epi16(step3[11], step3[12]); + const __m256i out_26_1 = _mm256_unpackhi_epi16(step3[11], step3[12]); + const __m256i out_02_2 = _mm256_madd_epi16(out_02_0, k__cospi_p30_p02); + const __m256i out_02_3 = _mm256_madd_epi16(out_02_1, k__cospi_p30_p02); + const __m256i out_18_2 = _mm256_madd_epi16(out_18_0, k__cospi_p14_p18); + const __m256i out_18_3 = _mm256_madd_epi16(out_18_1, k__cospi_p14_p18); + const __m256i out_10_2 = _mm256_madd_epi16(out_10_0, k__cospi_p22_p10); + const __m256i out_10_3 = _mm256_madd_epi16(out_10_1, k__cospi_p22_p10); + const __m256i out_26_2 = _mm256_madd_epi16(out_26_0, k__cospi_p06_p26); + const __m256i out_26_3 = _mm256_madd_epi16(out_26_1, k__cospi_p06_p26); + const __m256i out_06_2 = _mm256_madd_epi16(out_26_0, k__cospi_m26_p06); + const __m256i out_06_3 = _mm256_madd_epi16(out_26_1, k__cospi_m26_p06); + const __m256i out_22_2 = _mm256_madd_epi16(out_10_0, k__cospi_m10_p22); + const __m256i out_22_3 = _mm256_madd_epi16(out_10_1, k__cospi_m10_p22); + const __m256i out_14_2 = _mm256_madd_epi16(out_18_0, k__cospi_m18_p14); + const __m256i out_14_3 = _mm256_madd_epi16(out_18_1, k__cospi_m18_p14); + const __m256i out_30_2 = _mm256_madd_epi16(out_02_0, k__cospi_m02_p30); + const __m256i out_30_3 = _mm256_madd_epi16(out_02_1, k__cospi_m02_p30); + // dct_const_round_shift + const __m256i out_02_4 = _mm256_add_epi32(out_02_2, k__DCT_CONST_ROUNDING); + const __m256i out_02_5 = _mm256_add_epi32(out_02_3, k__DCT_CONST_ROUNDING); + const __m256i out_18_4 = _mm256_add_epi32(out_18_2, k__DCT_CONST_ROUNDING); + const __m256i out_18_5 = _mm256_add_epi32(out_18_3, k__DCT_CONST_ROUNDING); + const __m256i out_10_4 = _mm256_add_epi32(out_10_2, k__DCT_CONST_ROUNDING); + const __m256i out_10_5 = _mm256_add_epi32(out_10_3, k__DCT_CONST_ROUNDING); + const __m256i out_26_4 = _mm256_add_epi32(out_26_2, k__DCT_CONST_ROUNDING); + const __m256i out_26_5 = _mm256_add_epi32(out_26_3, k__DCT_CONST_ROUNDING); + const __m256i out_06_4 = _mm256_add_epi32(out_06_2, k__DCT_CONST_ROUNDING); + const __m256i out_06_5 = _mm256_add_epi32(out_06_3, k__DCT_CONST_ROUNDING); + const __m256i out_22_4 = _mm256_add_epi32(out_22_2, k__DCT_CONST_ROUNDING); + const __m256i out_22_5 = _mm256_add_epi32(out_22_3, k__DCT_CONST_ROUNDING); + const __m256i out_14_4 = _mm256_add_epi32(out_14_2, k__DCT_CONST_ROUNDING); + const __m256i out_14_5 = _mm256_add_epi32(out_14_3, k__DCT_CONST_ROUNDING); + const __m256i out_30_4 = _mm256_add_epi32(out_30_2, k__DCT_CONST_ROUNDING); + const __m256i out_30_5 = _mm256_add_epi32(out_30_3, k__DCT_CONST_ROUNDING); + const __m256i out_02_6 = _mm256_srai_epi32(out_02_4, DCT_CONST_BITS); + const __m256i out_02_7 = _mm256_srai_epi32(out_02_5, DCT_CONST_BITS); + const __m256i out_18_6 = _mm256_srai_epi32(out_18_4, DCT_CONST_BITS); + const __m256i out_18_7 = _mm256_srai_epi32(out_18_5, DCT_CONST_BITS); + const __m256i out_10_6 = _mm256_srai_epi32(out_10_4, DCT_CONST_BITS); + const __m256i out_10_7 = _mm256_srai_epi32(out_10_5, DCT_CONST_BITS); + const __m256i out_26_6 = _mm256_srai_epi32(out_26_4, DCT_CONST_BITS); + const __m256i out_26_7 = _mm256_srai_epi32(out_26_5, DCT_CONST_BITS); + const __m256i out_06_6 = _mm256_srai_epi32(out_06_4, DCT_CONST_BITS); + const __m256i out_06_7 = _mm256_srai_epi32(out_06_5, DCT_CONST_BITS); + const __m256i out_22_6 = _mm256_srai_epi32(out_22_4, DCT_CONST_BITS); + const __m256i out_22_7 = _mm256_srai_epi32(out_22_5, DCT_CONST_BITS); + const __m256i out_14_6 = _mm256_srai_epi32(out_14_4, DCT_CONST_BITS); + const __m256i out_14_7 = _mm256_srai_epi32(out_14_5, DCT_CONST_BITS); + const __m256i out_30_6 = _mm256_srai_epi32(out_30_4, DCT_CONST_BITS); + const __m256i out_30_7 = _mm256_srai_epi32(out_30_5, DCT_CONST_BITS); + // Combine + out[ 2] = _mm256_packs_epi32(out_02_6, out_02_7); + out[18] = _mm256_packs_epi32(out_18_6, out_18_7); + out[10] = _mm256_packs_epi32(out_10_6, out_10_7); + out[26] = _mm256_packs_epi32(out_26_6, out_26_7); + out[ 6] = _mm256_packs_epi32(out_06_6, out_06_7); + out[22] = _mm256_packs_epi32(out_22_6, out_22_7); + out[14] = _mm256_packs_epi32(out_14_6, out_14_7); + out[30] = _mm256_packs_epi32(out_30_6, out_30_7); + } + { + step1[16] = _mm256_add_epi16(step3[17], step2[16]); + step1[17] = _mm256_sub_epi16(step2[16], step3[17]); + step1[18] = _mm256_sub_epi16(step2[19], step3[18]); + step1[19] = _mm256_add_epi16(step3[18], step2[19]); + step1[20] = _mm256_add_epi16(step3[21], step2[20]); + step1[21] = _mm256_sub_epi16(step2[20], step3[21]); + step1[22] = _mm256_sub_epi16(step2[23], step3[22]); + step1[23] = _mm256_add_epi16(step3[22], step2[23]); + step1[24] = _mm256_add_epi16(step3[25], step2[24]); + step1[25] = _mm256_sub_epi16(step2[24], step3[25]); + step1[26] = _mm256_sub_epi16(step2[27], step3[26]); + step1[27] = _mm256_add_epi16(step3[26], step2[27]); + step1[28] = _mm256_add_epi16(step3[29], step2[28]); + step1[29] = _mm256_sub_epi16(step2[28], step3[29]); + step1[30] = _mm256_sub_epi16(step2[31], step3[30]); + step1[31] = _mm256_add_epi16(step3[30], step2[31]); + } + // Final stage --- outputs indices are bit-reversed. + { + const __m256i out_01_0 = _mm256_unpacklo_epi16(step1[16], step1[31]); + const __m256i out_01_1 = _mm256_unpackhi_epi16(step1[16], step1[31]); + const __m256i out_17_0 = _mm256_unpacklo_epi16(step1[17], step1[30]); + const __m256i out_17_1 = _mm256_unpackhi_epi16(step1[17], step1[30]); + const __m256i out_09_0 = _mm256_unpacklo_epi16(step1[18], step1[29]); + const __m256i out_09_1 = _mm256_unpackhi_epi16(step1[18], step1[29]); + const __m256i out_25_0 = _mm256_unpacklo_epi16(step1[19], step1[28]); + const __m256i out_25_1 = _mm256_unpackhi_epi16(step1[19], step1[28]); + const __m256i out_01_2 = _mm256_madd_epi16(out_01_0, k__cospi_p31_p01); + const __m256i out_01_3 = _mm256_madd_epi16(out_01_1, k__cospi_p31_p01); + const __m256i out_17_2 = _mm256_madd_epi16(out_17_0, k__cospi_p15_p17); + const __m256i out_17_3 = _mm256_madd_epi16(out_17_1, k__cospi_p15_p17); + const __m256i out_09_2 = _mm256_madd_epi16(out_09_0, k__cospi_p23_p09); + const __m256i out_09_3 = _mm256_madd_epi16(out_09_1, k__cospi_p23_p09); + const __m256i out_25_2 = _mm256_madd_epi16(out_25_0, k__cospi_p07_p25); + const __m256i out_25_3 = _mm256_madd_epi16(out_25_1, k__cospi_p07_p25); + const __m256i out_07_2 = _mm256_madd_epi16(out_25_0, k__cospi_m25_p07); + const __m256i out_07_3 = _mm256_madd_epi16(out_25_1, k__cospi_m25_p07); + const __m256i out_23_2 = _mm256_madd_epi16(out_09_0, k__cospi_m09_p23); + const __m256i out_23_3 = _mm256_madd_epi16(out_09_1, k__cospi_m09_p23); + const __m256i out_15_2 = _mm256_madd_epi16(out_17_0, k__cospi_m17_p15); + const __m256i out_15_3 = _mm256_madd_epi16(out_17_1, k__cospi_m17_p15); + const __m256i out_31_2 = _mm256_madd_epi16(out_01_0, k__cospi_m01_p31); + const __m256i out_31_3 = _mm256_madd_epi16(out_01_1, k__cospi_m01_p31); + // dct_const_round_shift + const __m256i out_01_4 = _mm256_add_epi32(out_01_2, k__DCT_CONST_ROUNDING); + const __m256i out_01_5 = _mm256_add_epi32(out_01_3, k__DCT_CONST_ROUNDING); + const __m256i out_17_4 = _mm256_add_epi32(out_17_2, k__DCT_CONST_ROUNDING); + const __m256i out_17_5 = _mm256_add_epi32(out_17_3, k__DCT_CONST_ROUNDING); + const __m256i out_09_4 = _mm256_add_epi32(out_09_2, k__DCT_CONST_ROUNDING); + const __m256i out_09_5 = _mm256_add_epi32(out_09_3, k__DCT_CONST_ROUNDING); + const __m256i out_25_4 = _mm256_add_epi32(out_25_2, k__DCT_CONST_ROUNDING); + const __m256i out_25_5 = _mm256_add_epi32(out_25_3, k__DCT_CONST_ROUNDING); + const __m256i out_07_4 = _mm256_add_epi32(out_07_2, k__DCT_CONST_ROUNDING); + const __m256i out_07_5 = _mm256_add_epi32(out_07_3, k__DCT_CONST_ROUNDING); + const __m256i out_23_4 = _mm256_add_epi32(out_23_2, k__DCT_CONST_ROUNDING); + const __m256i out_23_5 = _mm256_add_epi32(out_23_3, k__DCT_CONST_ROUNDING); + const __m256i out_15_4 = _mm256_add_epi32(out_15_2, k__DCT_CONST_ROUNDING); + const __m256i out_15_5 = _mm256_add_epi32(out_15_3, k__DCT_CONST_ROUNDING); + const __m256i out_31_4 = _mm256_add_epi32(out_31_2, k__DCT_CONST_ROUNDING); + const __m256i out_31_5 = _mm256_add_epi32(out_31_3, k__DCT_CONST_ROUNDING); + const __m256i out_01_6 = _mm256_srai_epi32(out_01_4, DCT_CONST_BITS); + const __m256i out_01_7 = _mm256_srai_epi32(out_01_5, DCT_CONST_BITS); + const __m256i out_17_6 = _mm256_srai_epi32(out_17_4, DCT_CONST_BITS); + const __m256i out_17_7 = _mm256_srai_epi32(out_17_5, DCT_CONST_BITS); + const __m256i out_09_6 = _mm256_srai_epi32(out_09_4, DCT_CONST_BITS); + const __m256i out_09_7 = _mm256_srai_epi32(out_09_5, DCT_CONST_BITS); + const __m256i out_25_6 = _mm256_srai_epi32(out_25_4, DCT_CONST_BITS); + const __m256i out_25_7 = _mm256_srai_epi32(out_25_5, DCT_CONST_BITS); + const __m256i out_07_6 = _mm256_srai_epi32(out_07_4, DCT_CONST_BITS); + const __m256i out_07_7 = _mm256_srai_epi32(out_07_5, DCT_CONST_BITS); + const __m256i out_23_6 = _mm256_srai_epi32(out_23_4, DCT_CONST_BITS); + const __m256i out_23_7 = _mm256_srai_epi32(out_23_5, DCT_CONST_BITS); + const __m256i out_15_6 = _mm256_srai_epi32(out_15_4, DCT_CONST_BITS); + const __m256i out_15_7 = _mm256_srai_epi32(out_15_5, DCT_CONST_BITS); + const __m256i out_31_6 = _mm256_srai_epi32(out_31_4, DCT_CONST_BITS); + const __m256i out_31_7 = _mm256_srai_epi32(out_31_5, DCT_CONST_BITS); + // Combine + out[ 1] = _mm256_packs_epi32(out_01_6, out_01_7); + out[17] = _mm256_packs_epi32(out_17_6, out_17_7); + out[ 9] = _mm256_packs_epi32(out_09_6, out_09_7); + out[25] = _mm256_packs_epi32(out_25_6, out_25_7); + out[ 7] = _mm256_packs_epi32(out_07_6, out_07_7); + out[23] = _mm256_packs_epi32(out_23_6, out_23_7); + out[15] = _mm256_packs_epi32(out_15_6, out_15_7); + out[31] = _mm256_packs_epi32(out_31_6, out_31_7); + } + { + const __m256i out_05_0 = _mm256_unpacklo_epi16(step1[20], step1[27]); + const __m256i out_05_1 = _mm256_unpackhi_epi16(step1[20], step1[27]); + const __m256i out_21_0 = _mm256_unpacklo_epi16(step1[21], step1[26]); + const __m256i out_21_1 = _mm256_unpackhi_epi16(step1[21], step1[26]); + const __m256i out_13_0 = _mm256_unpacklo_epi16(step1[22], step1[25]); + const __m256i out_13_1 = _mm256_unpackhi_epi16(step1[22], step1[25]); + const __m256i out_29_0 = _mm256_unpacklo_epi16(step1[23], step1[24]); + const __m256i out_29_1 = _mm256_unpackhi_epi16(step1[23], step1[24]); + const __m256i out_05_2 = _mm256_madd_epi16(out_05_0, k__cospi_p27_p05); + const __m256i out_05_3 = _mm256_madd_epi16(out_05_1, k__cospi_p27_p05); + const __m256i out_21_2 = _mm256_madd_epi16(out_21_0, k__cospi_p11_p21); + const __m256i out_21_3 = _mm256_madd_epi16(out_21_1, k__cospi_p11_p21); + const __m256i out_13_2 = _mm256_madd_epi16(out_13_0, k__cospi_p19_p13); + const __m256i out_13_3 = _mm256_madd_epi16(out_13_1, k__cospi_p19_p13); + const __m256i out_29_2 = _mm256_madd_epi16(out_29_0, k__cospi_p03_p29); + const __m256i out_29_3 = _mm256_madd_epi16(out_29_1, k__cospi_p03_p29); + const __m256i out_03_2 = _mm256_madd_epi16(out_29_0, k__cospi_m29_p03); + const __m256i out_03_3 = _mm256_madd_epi16(out_29_1, k__cospi_m29_p03); + const __m256i out_19_2 = _mm256_madd_epi16(out_13_0, k__cospi_m13_p19); + const __m256i out_19_3 = _mm256_madd_epi16(out_13_1, k__cospi_m13_p19); + const __m256i out_11_2 = _mm256_madd_epi16(out_21_0, k__cospi_m21_p11); + const __m256i out_11_3 = _mm256_madd_epi16(out_21_1, k__cospi_m21_p11); + const __m256i out_27_2 = _mm256_madd_epi16(out_05_0, k__cospi_m05_p27); + const __m256i out_27_3 = _mm256_madd_epi16(out_05_1, k__cospi_m05_p27); + // dct_const_round_shift + const __m256i out_05_4 = _mm256_add_epi32(out_05_2, k__DCT_CONST_ROUNDING); + const __m256i out_05_5 = _mm256_add_epi32(out_05_3, k__DCT_CONST_ROUNDING); + const __m256i out_21_4 = _mm256_add_epi32(out_21_2, k__DCT_CONST_ROUNDING); + const __m256i out_21_5 = _mm256_add_epi32(out_21_3, k__DCT_CONST_ROUNDING); + const __m256i out_13_4 = _mm256_add_epi32(out_13_2, k__DCT_CONST_ROUNDING); + const __m256i out_13_5 = _mm256_add_epi32(out_13_3, k__DCT_CONST_ROUNDING); + const __m256i out_29_4 = _mm256_add_epi32(out_29_2, k__DCT_CONST_ROUNDING); + const __m256i out_29_5 = _mm256_add_epi32(out_29_3, k__DCT_CONST_ROUNDING); + const __m256i out_03_4 = _mm256_add_epi32(out_03_2, k__DCT_CONST_ROUNDING); + const __m256i out_03_5 = _mm256_add_epi32(out_03_3, k__DCT_CONST_ROUNDING); + const __m256i out_19_4 = _mm256_add_epi32(out_19_2, k__DCT_CONST_ROUNDING); + const __m256i out_19_5 = _mm256_add_epi32(out_19_3, k__DCT_CONST_ROUNDING); + const __m256i out_11_4 = _mm256_add_epi32(out_11_2, k__DCT_CONST_ROUNDING); + const __m256i out_11_5 = _mm256_add_epi32(out_11_3, k__DCT_CONST_ROUNDING); + const __m256i out_27_4 = _mm256_add_epi32(out_27_2, k__DCT_CONST_ROUNDING); + const __m256i out_27_5 = _mm256_add_epi32(out_27_3, k__DCT_CONST_ROUNDING); + const __m256i out_05_6 = _mm256_srai_epi32(out_05_4, DCT_CONST_BITS); + const __m256i out_05_7 = _mm256_srai_epi32(out_05_5, DCT_CONST_BITS); + const __m256i out_21_6 = _mm256_srai_epi32(out_21_4, DCT_CONST_BITS); + const __m256i out_21_7 = _mm256_srai_epi32(out_21_5, DCT_CONST_BITS); + const __m256i out_13_6 = _mm256_srai_epi32(out_13_4, DCT_CONST_BITS); + const __m256i out_13_7 = _mm256_srai_epi32(out_13_5, DCT_CONST_BITS); + const __m256i out_29_6 = _mm256_srai_epi32(out_29_4, DCT_CONST_BITS); + const __m256i out_29_7 = _mm256_srai_epi32(out_29_5, DCT_CONST_BITS); + const __m256i out_03_6 = _mm256_srai_epi32(out_03_4, DCT_CONST_BITS); + const __m256i out_03_7 = _mm256_srai_epi32(out_03_5, DCT_CONST_BITS); + const __m256i out_19_6 = _mm256_srai_epi32(out_19_4, DCT_CONST_BITS); + const __m256i out_19_7 = _mm256_srai_epi32(out_19_5, DCT_CONST_BITS); + const __m256i out_11_6 = _mm256_srai_epi32(out_11_4, DCT_CONST_BITS); + const __m256i out_11_7 = _mm256_srai_epi32(out_11_5, DCT_CONST_BITS); + const __m256i out_27_6 = _mm256_srai_epi32(out_27_4, DCT_CONST_BITS); + const __m256i out_27_7 = _mm256_srai_epi32(out_27_5, DCT_CONST_BITS); + // Combine + out[ 5] = _mm256_packs_epi32(out_05_6, out_05_7); + out[21] = _mm256_packs_epi32(out_21_6, out_21_7); + out[13] = _mm256_packs_epi32(out_13_6, out_13_7); + out[29] = _mm256_packs_epi32(out_29_6, out_29_7); + out[ 3] = _mm256_packs_epi32(out_03_6, out_03_7); + out[19] = _mm256_packs_epi32(out_19_6, out_19_7); + out[11] = _mm256_packs_epi32(out_11_6, out_11_7); + out[27] = _mm256_packs_epi32(out_27_6, out_27_7); + } +#if FDCT32x32_HIGH_PRECISION + } else { + __m256i lstep1[64], lstep2[64], lstep3[64]; + __m256i u[32], v[32], sign[16]; + const __m256i K32One = _mm256_set_epi32(1, 1, 1, 1, 1, 1, 1, 1); + // start using 32-bit operations + // stage 3 + { + // expanding to 32-bit length priori to addition operations + lstep2[ 0] = _mm256_unpacklo_epi16(step2[ 0], kZero); + lstep2[ 1] = _mm256_unpackhi_epi16(step2[ 0], kZero); + lstep2[ 2] = _mm256_unpacklo_epi16(step2[ 1], kZero); + lstep2[ 3] = _mm256_unpackhi_epi16(step2[ 1], kZero); + lstep2[ 4] = _mm256_unpacklo_epi16(step2[ 2], kZero); + lstep2[ 5] = _mm256_unpackhi_epi16(step2[ 2], kZero); + lstep2[ 6] = _mm256_unpacklo_epi16(step2[ 3], kZero); + lstep2[ 7] = _mm256_unpackhi_epi16(step2[ 3], kZero); + lstep2[ 8] = _mm256_unpacklo_epi16(step2[ 4], kZero); + lstep2[ 9] = _mm256_unpackhi_epi16(step2[ 4], kZero); + lstep2[10] = _mm256_unpacklo_epi16(step2[ 5], kZero); + lstep2[11] = _mm256_unpackhi_epi16(step2[ 5], kZero); + lstep2[12] = _mm256_unpacklo_epi16(step2[ 6], kZero); + lstep2[13] = _mm256_unpackhi_epi16(step2[ 6], kZero); + lstep2[14] = _mm256_unpacklo_epi16(step2[ 7], kZero); + lstep2[15] = _mm256_unpackhi_epi16(step2[ 7], kZero); + lstep2[ 0] = _mm256_madd_epi16(lstep2[ 0], kOne); + lstep2[ 1] = _mm256_madd_epi16(lstep2[ 1], kOne); + lstep2[ 2] = _mm256_madd_epi16(lstep2[ 2], kOne); + lstep2[ 3] = _mm256_madd_epi16(lstep2[ 3], kOne); + lstep2[ 4] = _mm256_madd_epi16(lstep2[ 4], kOne); + lstep2[ 5] = _mm256_madd_epi16(lstep2[ 5], kOne); + lstep2[ 6] = _mm256_madd_epi16(lstep2[ 6], kOne); + lstep2[ 7] = _mm256_madd_epi16(lstep2[ 7], kOne); + lstep2[ 8] = _mm256_madd_epi16(lstep2[ 8], kOne); + lstep2[ 9] = _mm256_madd_epi16(lstep2[ 9], kOne); + lstep2[10] = _mm256_madd_epi16(lstep2[10], kOne); + lstep2[11] = _mm256_madd_epi16(lstep2[11], kOne); + lstep2[12] = _mm256_madd_epi16(lstep2[12], kOne); + lstep2[13] = _mm256_madd_epi16(lstep2[13], kOne); + lstep2[14] = _mm256_madd_epi16(lstep2[14], kOne); + lstep2[15] = _mm256_madd_epi16(lstep2[15], kOne); + + lstep3[ 0] = _mm256_add_epi32(lstep2[14], lstep2[ 0]); + lstep3[ 1] = _mm256_add_epi32(lstep2[15], lstep2[ 1]); + lstep3[ 2] = _mm256_add_epi32(lstep2[12], lstep2[ 2]); + lstep3[ 3] = _mm256_add_epi32(lstep2[13], lstep2[ 3]); + lstep3[ 4] = _mm256_add_epi32(lstep2[10], lstep2[ 4]); + lstep3[ 5] = _mm256_add_epi32(lstep2[11], lstep2[ 5]); + lstep3[ 6] = _mm256_add_epi32(lstep2[ 8], lstep2[ 6]); + lstep3[ 7] = _mm256_add_epi32(lstep2[ 9], lstep2[ 7]); + lstep3[ 8] = _mm256_sub_epi32(lstep2[ 6], lstep2[ 8]); + lstep3[ 9] = _mm256_sub_epi32(lstep2[ 7], lstep2[ 9]); + lstep3[10] = _mm256_sub_epi32(lstep2[ 4], lstep2[10]); + lstep3[11] = _mm256_sub_epi32(lstep2[ 5], lstep2[11]); + lstep3[12] = _mm256_sub_epi32(lstep2[ 2], lstep2[12]); + lstep3[13] = _mm256_sub_epi32(lstep2[ 3], lstep2[13]); + lstep3[14] = _mm256_sub_epi32(lstep2[ 0], lstep2[14]); + lstep3[15] = _mm256_sub_epi32(lstep2[ 1], lstep2[15]); + } + { + const __m256i s3_10_0 = _mm256_unpacklo_epi16(step2[13], step2[10]); + const __m256i s3_10_1 = _mm256_unpackhi_epi16(step2[13], step2[10]); + const __m256i s3_11_0 = _mm256_unpacklo_epi16(step2[12], step2[11]); + const __m256i s3_11_1 = _mm256_unpackhi_epi16(step2[12], step2[11]); + const __m256i s3_10_2 = _mm256_madd_epi16(s3_10_0, k__cospi_p16_m16); + const __m256i s3_10_3 = _mm256_madd_epi16(s3_10_1, k__cospi_p16_m16); + const __m256i s3_11_2 = _mm256_madd_epi16(s3_11_0, k__cospi_p16_m16); + const __m256i s3_11_3 = _mm256_madd_epi16(s3_11_1, k__cospi_p16_m16); + const __m256i s3_12_2 = _mm256_madd_epi16(s3_11_0, k__cospi_p16_p16); + const __m256i s3_12_3 = _mm256_madd_epi16(s3_11_1, k__cospi_p16_p16); + const __m256i s3_13_2 = _mm256_madd_epi16(s3_10_0, k__cospi_p16_p16); + const __m256i s3_13_3 = _mm256_madd_epi16(s3_10_1, k__cospi_p16_p16); + // dct_const_round_shift + const __m256i s3_10_4 = _mm256_add_epi32(s3_10_2, k__DCT_CONST_ROUNDING); + const __m256i s3_10_5 = _mm256_add_epi32(s3_10_3, k__DCT_CONST_ROUNDING); + const __m256i s3_11_4 = _mm256_add_epi32(s3_11_2, k__DCT_CONST_ROUNDING); + const __m256i s3_11_5 = _mm256_add_epi32(s3_11_3, k__DCT_CONST_ROUNDING); + const __m256i s3_12_4 = _mm256_add_epi32(s3_12_2, k__DCT_CONST_ROUNDING); + const __m256i s3_12_5 = _mm256_add_epi32(s3_12_3, k__DCT_CONST_ROUNDING); + const __m256i s3_13_4 = _mm256_add_epi32(s3_13_2, k__DCT_CONST_ROUNDING); + const __m256i s3_13_5 = _mm256_add_epi32(s3_13_3, k__DCT_CONST_ROUNDING); + lstep3[20] = _mm256_srai_epi32(s3_10_4, DCT_CONST_BITS); + lstep3[21] = _mm256_srai_epi32(s3_10_5, DCT_CONST_BITS); + lstep3[22] = _mm256_srai_epi32(s3_11_4, DCT_CONST_BITS); + lstep3[23] = _mm256_srai_epi32(s3_11_5, DCT_CONST_BITS); + lstep3[24] = _mm256_srai_epi32(s3_12_4, DCT_CONST_BITS); + lstep3[25] = _mm256_srai_epi32(s3_12_5, DCT_CONST_BITS); + lstep3[26] = _mm256_srai_epi32(s3_13_4, DCT_CONST_BITS); + lstep3[27] = _mm256_srai_epi32(s3_13_5, DCT_CONST_BITS); + } + { + lstep2[40] = _mm256_unpacklo_epi16(step2[20], kZero); + lstep2[41] = _mm256_unpackhi_epi16(step2[20], kZero); + lstep2[42] = _mm256_unpacklo_epi16(step2[21], kZero); + lstep2[43] = _mm256_unpackhi_epi16(step2[21], kZero); + lstep2[44] = _mm256_unpacklo_epi16(step2[22], kZero); + lstep2[45] = _mm256_unpackhi_epi16(step2[22], kZero); + lstep2[46] = _mm256_unpacklo_epi16(step2[23], kZero); + lstep2[47] = _mm256_unpackhi_epi16(step2[23], kZero); + lstep2[48] = _mm256_unpacklo_epi16(step2[24], kZero); + lstep2[49] = _mm256_unpackhi_epi16(step2[24], kZero); + lstep2[50] = _mm256_unpacklo_epi16(step2[25], kZero); + lstep2[51] = _mm256_unpackhi_epi16(step2[25], kZero); + lstep2[52] = _mm256_unpacklo_epi16(step2[26], kZero); + lstep2[53] = _mm256_unpackhi_epi16(step2[26], kZero); + lstep2[54] = _mm256_unpacklo_epi16(step2[27], kZero); + lstep2[55] = _mm256_unpackhi_epi16(step2[27], kZero); + lstep2[40] = _mm256_madd_epi16(lstep2[40], kOne); + lstep2[41] = _mm256_madd_epi16(lstep2[41], kOne); + lstep2[42] = _mm256_madd_epi16(lstep2[42], kOne); + lstep2[43] = _mm256_madd_epi16(lstep2[43], kOne); + lstep2[44] = _mm256_madd_epi16(lstep2[44], kOne); + lstep2[45] = _mm256_madd_epi16(lstep2[45], kOne); + lstep2[46] = _mm256_madd_epi16(lstep2[46], kOne); + lstep2[47] = _mm256_madd_epi16(lstep2[47], kOne); + lstep2[48] = _mm256_madd_epi16(lstep2[48], kOne); + lstep2[49] = _mm256_madd_epi16(lstep2[49], kOne); + lstep2[50] = _mm256_madd_epi16(lstep2[50], kOne); + lstep2[51] = _mm256_madd_epi16(lstep2[51], kOne); + lstep2[52] = _mm256_madd_epi16(lstep2[52], kOne); + lstep2[53] = _mm256_madd_epi16(lstep2[53], kOne); + lstep2[54] = _mm256_madd_epi16(lstep2[54], kOne); + lstep2[55] = _mm256_madd_epi16(lstep2[55], kOne); + + lstep1[32] = _mm256_unpacklo_epi16(step1[16], kZero); + lstep1[33] = _mm256_unpackhi_epi16(step1[16], kZero); + lstep1[34] = _mm256_unpacklo_epi16(step1[17], kZero); + lstep1[35] = _mm256_unpackhi_epi16(step1[17], kZero); + lstep1[36] = _mm256_unpacklo_epi16(step1[18], kZero); + lstep1[37] = _mm256_unpackhi_epi16(step1[18], kZero); + lstep1[38] = _mm256_unpacklo_epi16(step1[19], kZero); + lstep1[39] = _mm256_unpackhi_epi16(step1[19], kZero); + lstep1[56] = _mm256_unpacklo_epi16(step1[28], kZero); + lstep1[57] = _mm256_unpackhi_epi16(step1[28], kZero); + lstep1[58] = _mm256_unpacklo_epi16(step1[29], kZero); + lstep1[59] = _mm256_unpackhi_epi16(step1[29], kZero); + lstep1[60] = _mm256_unpacklo_epi16(step1[30], kZero); + lstep1[61] = _mm256_unpackhi_epi16(step1[30], kZero); + lstep1[62] = _mm256_unpacklo_epi16(step1[31], kZero); + lstep1[63] = _mm256_unpackhi_epi16(step1[31], kZero); + lstep1[32] = _mm256_madd_epi16(lstep1[32], kOne); + lstep1[33] = _mm256_madd_epi16(lstep1[33], kOne); + lstep1[34] = _mm256_madd_epi16(lstep1[34], kOne); + lstep1[35] = _mm256_madd_epi16(lstep1[35], kOne); + lstep1[36] = _mm256_madd_epi16(lstep1[36], kOne); + lstep1[37] = _mm256_madd_epi16(lstep1[37], kOne); + lstep1[38] = _mm256_madd_epi16(lstep1[38], kOne); + lstep1[39] = _mm256_madd_epi16(lstep1[39], kOne); + lstep1[56] = _mm256_madd_epi16(lstep1[56], kOne); + lstep1[57] = _mm256_madd_epi16(lstep1[57], kOne); + lstep1[58] = _mm256_madd_epi16(lstep1[58], kOne); + lstep1[59] = _mm256_madd_epi16(lstep1[59], kOne); + lstep1[60] = _mm256_madd_epi16(lstep1[60], kOne); + lstep1[61] = _mm256_madd_epi16(lstep1[61], kOne); + lstep1[62] = _mm256_madd_epi16(lstep1[62], kOne); + lstep1[63] = _mm256_madd_epi16(lstep1[63], kOne); + + lstep3[32] = _mm256_add_epi32(lstep2[46], lstep1[32]); + lstep3[33] = _mm256_add_epi32(lstep2[47], lstep1[33]); + + lstep3[34] = _mm256_add_epi32(lstep2[44], lstep1[34]); + lstep3[35] = _mm256_add_epi32(lstep2[45], lstep1[35]); + lstep3[36] = _mm256_add_epi32(lstep2[42], lstep1[36]); + lstep3[37] = _mm256_add_epi32(lstep2[43], lstep1[37]); + lstep3[38] = _mm256_add_epi32(lstep2[40], lstep1[38]); + lstep3[39] = _mm256_add_epi32(lstep2[41], lstep1[39]); + lstep3[40] = _mm256_sub_epi32(lstep1[38], lstep2[40]); + lstep3[41] = _mm256_sub_epi32(lstep1[39], lstep2[41]); + lstep3[42] = _mm256_sub_epi32(lstep1[36], lstep2[42]); + lstep3[43] = _mm256_sub_epi32(lstep1[37], lstep2[43]); + lstep3[44] = _mm256_sub_epi32(lstep1[34], lstep2[44]); + lstep3[45] = _mm256_sub_epi32(lstep1[35], lstep2[45]); + lstep3[46] = _mm256_sub_epi32(lstep1[32], lstep2[46]); + lstep3[47] = _mm256_sub_epi32(lstep1[33], lstep2[47]); + lstep3[48] = _mm256_sub_epi32(lstep1[62], lstep2[48]); + lstep3[49] = _mm256_sub_epi32(lstep1[63], lstep2[49]); + lstep3[50] = _mm256_sub_epi32(lstep1[60], lstep2[50]); + lstep3[51] = _mm256_sub_epi32(lstep1[61], lstep2[51]); + lstep3[52] = _mm256_sub_epi32(lstep1[58], lstep2[52]); + lstep3[53] = _mm256_sub_epi32(lstep1[59], lstep2[53]); + lstep3[54] = _mm256_sub_epi32(lstep1[56], lstep2[54]); + lstep3[55] = _mm256_sub_epi32(lstep1[57], lstep2[55]); + lstep3[56] = _mm256_add_epi32(lstep2[54], lstep1[56]); + lstep3[57] = _mm256_add_epi32(lstep2[55], lstep1[57]); + lstep3[58] = _mm256_add_epi32(lstep2[52], lstep1[58]); + lstep3[59] = _mm256_add_epi32(lstep2[53], lstep1[59]); + lstep3[60] = _mm256_add_epi32(lstep2[50], lstep1[60]); + lstep3[61] = _mm256_add_epi32(lstep2[51], lstep1[61]); + lstep3[62] = _mm256_add_epi32(lstep2[48], lstep1[62]); + lstep3[63] = _mm256_add_epi32(lstep2[49], lstep1[63]); + } + + // stage 4 + { + // expanding to 32-bit length priori to addition operations + lstep2[16] = _mm256_unpacklo_epi16(step2[ 8], kZero); + lstep2[17] = _mm256_unpackhi_epi16(step2[ 8], kZero); + lstep2[18] = _mm256_unpacklo_epi16(step2[ 9], kZero); + lstep2[19] = _mm256_unpackhi_epi16(step2[ 9], kZero); + lstep2[28] = _mm256_unpacklo_epi16(step2[14], kZero); + lstep2[29] = _mm256_unpackhi_epi16(step2[14], kZero); + lstep2[30] = _mm256_unpacklo_epi16(step2[15], kZero); + lstep2[31] = _mm256_unpackhi_epi16(step2[15], kZero); + lstep2[16] = _mm256_madd_epi16(lstep2[16], kOne); + lstep2[17] = _mm256_madd_epi16(lstep2[17], kOne); + lstep2[18] = _mm256_madd_epi16(lstep2[18], kOne); + lstep2[19] = _mm256_madd_epi16(lstep2[19], kOne); + lstep2[28] = _mm256_madd_epi16(lstep2[28], kOne); + lstep2[29] = _mm256_madd_epi16(lstep2[29], kOne); + lstep2[30] = _mm256_madd_epi16(lstep2[30], kOne); + lstep2[31] = _mm256_madd_epi16(lstep2[31], kOne); + + lstep1[ 0] = _mm256_add_epi32(lstep3[ 6], lstep3[ 0]); + lstep1[ 1] = _mm256_add_epi32(lstep3[ 7], lstep3[ 1]); + lstep1[ 2] = _mm256_add_epi32(lstep3[ 4], lstep3[ 2]); + lstep1[ 3] = _mm256_add_epi32(lstep3[ 5], lstep3[ 3]); + lstep1[ 4] = _mm256_sub_epi32(lstep3[ 2], lstep3[ 4]); + lstep1[ 5] = _mm256_sub_epi32(lstep3[ 3], lstep3[ 5]); + lstep1[ 6] = _mm256_sub_epi32(lstep3[ 0], lstep3[ 6]); + lstep1[ 7] = _mm256_sub_epi32(lstep3[ 1], lstep3[ 7]); + lstep1[16] = _mm256_add_epi32(lstep3[22], lstep2[16]); + lstep1[17] = _mm256_add_epi32(lstep3[23], lstep2[17]); + lstep1[18] = _mm256_add_epi32(lstep3[20], lstep2[18]); + lstep1[19] = _mm256_add_epi32(lstep3[21], lstep2[19]); + lstep1[20] = _mm256_sub_epi32(lstep2[18], lstep3[20]); + lstep1[21] = _mm256_sub_epi32(lstep2[19], lstep3[21]); + lstep1[22] = _mm256_sub_epi32(lstep2[16], lstep3[22]); + lstep1[23] = _mm256_sub_epi32(lstep2[17], lstep3[23]); + lstep1[24] = _mm256_sub_epi32(lstep2[30], lstep3[24]); + lstep1[25] = _mm256_sub_epi32(lstep2[31], lstep3[25]); + lstep1[26] = _mm256_sub_epi32(lstep2[28], lstep3[26]); + lstep1[27] = _mm256_sub_epi32(lstep2[29], lstep3[27]); + lstep1[28] = _mm256_add_epi32(lstep3[26], lstep2[28]); + lstep1[29] = _mm256_add_epi32(lstep3[27], lstep2[29]); + lstep1[30] = _mm256_add_epi32(lstep3[24], lstep2[30]); + lstep1[31] = _mm256_add_epi32(lstep3[25], lstep2[31]); + } + { + // to be continued... + // + const __m256i k32_p16_p16 = pair256_set_epi32(cospi_16_64, cospi_16_64); + const __m256i k32_p16_m16 = pair256_set_epi32(cospi_16_64, -cospi_16_64); + + u[0] = _mm256_unpacklo_epi32(lstep3[12], lstep3[10]); + u[1] = _mm256_unpackhi_epi32(lstep3[12], lstep3[10]); + u[2] = _mm256_unpacklo_epi32(lstep3[13], lstep3[11]); + u[3] = _mm256_unpackhi_epi32(lstep3[13], lstep3[11]); + + // TODO(jingning): manually inline k_madd_epi32_avx2_ to further hide + // instruction latency. + v[ 0] = k_madd_epi32_avx2(u[0], k32_p16_m16); + v[ 1] = k_madd_epi32_avx2(u[1], k32_p16_m16); + v[ 2] = k_madd_epi32_avx2(u[2], k32_p16_m16); + v[ 3] = k_madd_epi32_avx2(u[3], k32_p16_m16); + v[ 4] = k_madd_epi32_avx2(u[0], k32_p16_p16); + v[ 5] = k_madd_epi32_avx2(u[1], k32_p16_p16); + v[ 6] = k_madd_epi32_avx2(u[2], k32_p16_p16); + v[ 7] = k_madd_epi32_avx2(u[3], k32_p16_p16); + + u[0] = k_packs_epi64_avx2(v[0], v[1]); + u[1] = k_packs_epi64_avx2(v[2], v[3]); + u[2] = k_packs_epi64_avx2(v[4], v[5]); + u[3] = k_packs_epi64_avx2(v[6], v[7]); + + v[0] = _mm256_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm256_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm256_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm256_add_epi32(u[3], k__DCT_CONST_ROUNDING); + + lstep1[10] = _mm256_srai_epi32(v[0], DCT_CONST_BITS); + lstep1[11] = _mm256_srai_epi32(v[1], DCT_CONST_BITS); + lstep1[12] = _mm256_srai_epi32(v[2], DCT_CONST_BITS); + lstep1[13] = _mm256_srai_epi32(v[3], DCT_CONST_BITS); + } + { + const __m256i k32_m08_p24 = pair256_set_epi32(-cospi_8_64, cospi_24_64); + const __m256i k32_m24_m08 = pair256_set_epi32(-cospi_24_64, -cospi_8_64); + const __m256i k32_p24_p08 = pair256_set_epi32(cospi_24_64, cospi_8_64); + + u[ 0] = _mm256_unpacklo_epi32(lstep3[36], lstep3[58]); + u[ 1] = _mm256_unpackhi_epi32(lstep3[36], lstep3[58]); + u[ 2] = _mm256_unpacklo_epi32(lstep3[37], lstep3[59]); + u[ 3] = _mm256_unpackhi_epi32(lstep3[37], lstep3[59]); + u[ 4] = _mm256_unpacklo_epi32(lstep3[38], lstep3[56]); + u[ 5] = _mm256_unpackhi_epi32(lstep3[38], lstep3[56]); + u[ 6] = _mm256_unpacklo_epi32(lstep3[39], lstep3[57]); + u[ 7] = _mm256_unpackhi_epi32(lstep3[39], lstep3[57]); + u[ 8] = _mm256_unpacklo_epi32(lstep3[40], lstep3[54]); + u[ 9] = _mm256_unpackhi_epi32(lstep3[40], lstep3[54]); + u[10] = _mm256_unpacklo_epi32(lstep3[41], lstep3[55]); + u[11] = _mm256_unpackhi_epi32(lstep3[41], lstep3[55]); + u[12] = _mm256_unpacklo_epi32(lstep3[42], lstep3[52]); + u[13] = _mm256_unpackhi_epi32(lstep3[42], lstep3[52]); + u[14] = _mm256_unpacklo_epi32(lstep3[43], lstep3[53]); + u[15] = _mm256_unpackhi_epi32(lstep3[43], lstep3[53]); + + v[ 0] = k_madd_epi32_avx2(u[ 0], k32_m08_p24); + v[ 1] = k_madd_epi32_avx2(u[ 1], k32_m08_p24); + v[ 2] = k_madd_epi32_avx2(u[ 2], k32_m08_p24); + v[ 3] = k_madd_epi32_avx2(u[ 3], k32_m08_p24); + v[ 4] = k_madd_epi32_avx2(u[ 4], k32_m08_p24); + v[ 5] = k_madd_epi32_avx2(u[ 5], k32_m08_p24); + v[ 6] = k_madd_epi32_avx2(u[ 6], k32_m08_p24); + v[ 7] = k_madd_epi32_avx2(u[ 7], k32_m08_p24); + v[ 8] = k_madd_epi32_avx2(u[ 8], k32_m24_m08); + v[ 9] = k_madd_epi32_avx2(u[ 9], k32_m24_m08); + v[10] = k_madd_epi32_avx2(u[10], k32_m24_m08); + v[11] = k_madd_epi32_avx2(u[11], k32_m24_m08); + v[12] = k_madd_epi32_avx2(u[12], k32_m24_m08); + v[13] = k_madd_epi32_avx2(u[13], k32_m24_m08); + v[14] = k_madd_epi32_avx2(u[14], k32_m24_m08); + v[15] = k_madd_epi32_avx2(u[15], k32_m24_m08); + v[16] = k_madd_epi32_avx2(u[12], k32_m08_p24); + v[17] = k_madd_epi32_avx2(u[13], k32_m08_p24); + v[18] = k_madd_epi32_avx2(u[14], k32_m08_p24); + v[19] = k_madd_epi32_avx2(u[15], k32_m08_p24); + v[20] = k_madd_epi32_avx2(u[ 8], k32_m08_p24); + v[21] = k_madd_epi32_avx2(u[ 9], k32_m08_p24); + v[22] = k_madd_epi32_avx2(u[10], k32_m08_p24); + v[23] = k_madd_epi32_avx2(u[11], k32_m08_p24); + v[24] = k_madd_epi32_avx2(u[ 4], k32_p24_p08); + v[25] = k_madd_epi32_avx2(u[ 5], k32_p24_p08); + v[26] = k_madd_epi32_avx2(u[ 6], k32_p24_p08); + v[27] = k_madd_epi32_avx2(u[ 7], k32_p24_p08); + v[28] = k_madd_epi32_avx2(u[ 0], k32_p24_p08); + v[29] = k_madd_epi32_avx2(u[ 1], k32_p24_p08); + v[30] = k_madd_epi32_avx2(u[ 2], k32_p24_p08); + v[31] = k_madd_epi32_avx2(u[ 3], k32_p24_p08); + + u[ 0] = k_packs_epi64_avx2(v[ 0], v[ 1]); + u[ 1] = k_packs_epi64_avx2(v[ 2], v[ 3]); + u[ 2] = k_packs_epi64_avx2(v[ 4], v[ 5]); + u[ 3] = k_packs_epi64_avx2(v[ 6], v[ 7]); + u[ 4] = k_packs_epi64_avx2(v[ 8], v[ 9]); + u[ 5] = k_packs_epi64_avx2(v[10], v[11]); + u[ 6] = k_packs_epi64_avx2(v[12], v[13]); + u[ 7] = k_packs_epi64_avx2(v[14], v[15]); + u[ 8] = k_packs_epi64_avx2(v[16], v[17]); + u[ 9] = k_packs_epi64_avx2(v[18], v[19]); + u[10] = k_packs_epi64_avx2(v[20], v[21]); + u[11] = k_packs_epi64_avx2(v[22], v[23]); + u[12] = k_packs_epi64_avx2(v[24], v[25]); + u[13] = k_packs_epi64_avx2(v[26], v[27]); + u[14] = k_packs_epi64_avx2(v[28], v[29]); + u[15] = k_packs_epi64_avx2(v[30], v[31]); + + v[ 0] = _mm256_add_epi32(u[ 0], k__DCT_CONST_ROUNDING); + v[ 1] = _mm256_add_epi32(u[ 1], k__DCT_CONST_ROUNDING); + v[ 2] = _mm256_add_epi32(u[ 2], k__DCT_CONST_ROUNDING); + v[ 3] = _mm256_add_epi32(u[ 3], k__DCT_CONST_ROUNDING); + v[ 4] = _mm256_add_epi32(u[ 4], k__DCT_CONST_ROUNDING); + v[ 5] = _mm256_add_epi32(u[ 5], k__DCT_CONST_ROUNDING); + v[ 6] = _mm256_add_epi32(u[ 6], k__DCT_CONST_ROUNDING); + v[ 7] = _mm256_add_epi32(u[ 7], k__DCT_CONST_ROUNDING); + v[ 8] = _mm256_add_epi32(u[ 8], k__DCT_CONST_ROUNDING); + v[ 9] = _mm256_add_epi32(u[ 9], k__DCT_CONST_ROUNDING); + v[10] = _mm256_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm256_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm256_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm256_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm256_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm256_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + lstep1[36] = _mm256_srai_epi32(v[ 0], DCT_CONST_BITS); + lstep1[37] = _mm256_srai_epi32(v[ 1], DCT_CONST_BITS); + lstep1[38] = _mm256_srai_epi32(v[ 2], DCT_CONST_BITS); + lstep1[39] = _mm256_srai_epi32(v[ 3], DCT_CONST_BITS); + lstep1[40] = _mm256_srai_epi32(v[ 4], DCT_CONST_BITS); + lstep1[41] = _mm256_srai_epi32(v[ 5], DCT_CONST_BITS); + lstep1[42] = _mm256_srai_epi32(v[ 6], DCT_CONST_BITS); + lstep1[43] = _mm256_srai_epi32(v[ 7], DCT_CONST_BITS); + lstep1[52] = _mm256_srai_epi32(v[ 8], DCT_CONST_BITS); + lstep1[53] = _mm256_srai_epi32(v[ 9], DCT_CONST_BITS); + lstep1[54] = _mm256_srai_epi32(v[10], DCT_CONST_BITS); + lstep1[55] = _mm256_srai_epi32(v[11], DCT_CONST_BITS); + lstep1[56] = _mm256_srai_epi32(v[12], DCT_CONST_BITS); + lstep1[57] = _mm256_srai_epi32(v[13], DCT_CONST_BITS); + lstep1[58] = _mm256_srai_epi32(v[14], DCT_CONST_BITS); + lstep1[59] = _mm256_srai_epi32(v[15], DCT_CONST_BITS); + } + // stage 5 + { + lstep2[ 8] = _mm256_add_epi32(lstep1[10], lstep3[ 8]); + lstep2[ 9] = _mm256_add_epi32(lstep1[11], lstep3[ 9]); + lstep2[10] = _mm256_sub_epi32(lstep3[ 8], lstep1[10]); + lstep2[11] = _mm256_sub_epi32(lstep3[ 9], lstep1[11]); + lstep2[12] = _mm256_sub_epi32(lstep3[14], lstep1[12]); + lstep2[13] = _mm256_sub_epi32(lstep3[15], lstep1[13]); + lstep2[14] = _mm256_add_epi32(lstep1[12], lstep3[14]); + lstep2[15] = _mm256_add_epi32(lstep1[13], lstep3[15]); + } + { + const __m256i k32_p16_p16 = pair256_set_epi32(cospi_16_64, cospi_16_64); + const __m256i k32_p16_m16 = pair256_set_epi32(cospi_16_64, -cospi_16_64); + const __m256i k32_p24_p08 = pair256_set_epi32(cospi_24_64, cospi_8_64); + const __m256i k32_m08_p24 = pair256_set_epi32(-cospi_8_64, cospi_24_64); + + u[0] = _mm256_unpacklo_epi32(lstep1[0], lstep1[2]); + u[1] = _mm256_unpackhi_epi32(lstep1[0], lstep1[2]); + u[2] = _mm256_unpacklo_epi32(lstep1[1], lstep1[3]); + u[3] = _mm256_unpackhi_epi32(lstep1[1], lstep1[3]); + u[4] = _mm256_unpacklo_epi32(lstep1[4], lstep1[6]); + u[5] = _mm256_unpackhi_epi32(lstep1[4], lstep1[6]); + u[6] = _mm256_unpacklo_epi32(lstep1[5], lstep1[7]); + u[7] = _mm256_unpackhi_epi32(lstep1[5], lstep1[7]); + + // TODO(jingning): manually inline k_madd_epi32_avx2_ to further hide + // instruction latency. + v[ 0] = k_madd_epi32_avx2(u[0], k32_p16_p16); + v[ 1] = k_madd_epi32_avx2(u[1], k32_p16_p16); + v[ 2] = k_madd_epi32_avx2(u[2], k32_p16_p16); + v[ 3] = k_madd_epi32_avx2(u[3], k32_p16_p16); + v[ 4] = k_madd_epi32_avx2(u[0], k32_p16_m16); + v[ 5] = k_madd_epi32_avx2(u[1], k32_p16_m16); + v[ 6] = k_madd_epi32_avx2(u[2], k32_p16_m16); + v[ 7] = k_madd_epi32_avx2(u[3], k32_p16_m16); + v[ 8] = k_madd_epi32_avx2(u[4], k32_p24_p08); + v[ 9] = k_madd_epi32_avx2(u[5], k32_p24_p08); + v[10] = k_madd_epi32_avx2(u[6], k32_p24_p08); + v[11] = k_madd_epi32_avx2(u[7], k32_p24_p08); + v[12] = k_madd_epi32_avx2(u[4], k32_m08_p24); + v[13] = k_madd_epi32_avx2(u[5], k32_m08_p24); + v[14] = k_madd_epi32_avx2(u[6], k32_m08_p24); + v[15] = k_madd_epi32_avx2(u[7], k32_m08_p24); + + u[0] = k_packs_epi64_avx2(v[0], v[1]); + u[1] = k_packs_epi64_avx2(v[2], v[3]); + u[2] = k_packs_epi64_avx2(v[4], v[5]); + u[3] = k_packs_epi64_avx2(v[6], v[7]); + u[4] = k_packs_epi64_avx2(v[8], v[9]); + u[5] = k_packs_epi64_avx2(v[10], v[11]); + u[6] = k_packs_epi64_avx2(v[12], v[13]); + u[7] = k_packs_epi64_avx2(v[14], v[15]); + + v[0] = _mm256_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm256_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm256_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm256_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm256_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm256_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm256_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm256_add_epi32(u[7], k__DCT_CONST_ROUNDING); + + u[0] = _mm256_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm256_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm256_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm256_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm256_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm256_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm256_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm256_srai_epi32(v[7], DCT_CONST_BITS); + + sign[0] = _mm256_cmpgt_epi32(kZero,u[0]); + sign[1] = _mm256_cmpgt_epi32(kZero,u[1]); + sign[2] = _mm256_cmpgt_epi32(kZero,u[2]); + sign[3] = _mm256_cmpgt_epi32(kZero,u[3]); + sign[4] = _mm256_cmpgt_epi32(kZero,u[4]); + sign[5] = _mm256_cmpgt_epi32(kZero,u[5]); + sign[6] = _mm256_cmpgt_epi32(kZero,u[6]); + sign[7] = _mm256_cmpgt_epi32(kZero,u[7]); + + u[0] = _mm256_sub_epi32(u[0], sign[0]); + u[1] = _mm256_sub_epi32(u[1], sign[1]); + u[2] = _mm256_sub_epi32(u[2], sign[2]); + u[3] = _mm256_sub_epi32(u[3], sign[3]); + u[4] = _mm256_sub_epi32(u[4], sign[4]); + u[5] = _mm256_sub_epi32(u[5], sign[5]); + u[6] = _mm256_sub_epi32(u[6], sign[6]); + u[7] = _mm256_sub_epi32(u[7], sign[7]); + + u[0] = _mm256_add_epi32(u[0], K32One); + u[1] = _mm256_add_epi32(u[1], K32One); + u[2] = _mm256_add_epi32(u[2], K32One); + u[3] = _mm256_add_epi32(u[3], K32One); + u[4] = _mm256_add_epi32(u[4], K32One); + u[5] = _mm256_add_epi32(u[5], K32One); + u[6] = _mm256_add_epi32(u[6], K32One); + u[7] = _mm256_add_epi32(u[7], K32One); + + u[0] = _mm256_srai_epi32(u[0], 2); + u[1] = _mm256_srai_epi32(u[1], 2); + u[2] = _mm256_srai_epi32(u[2], 2); + u[3] = _mm256_srai_epi32(u[3], 2); + u[4] = _mm256_srai_epi32(u[4], 2); + u[5] = _mm256_srai_epi32(u[5], 2); + u[6] = _mm256_srai_epi32(u[6], 2); + u[7] = _mm256_srai_epi32(u[7], 2); + + // Combine + out[ 0] = _mm256_packs_epi32(u[0], u[1]); + out[16] = _mm256_packs_epi32(u[2], u[3]); + out[ 8] = _mm256_packs_epi32(u[4], u[5]); + out[24] = _mm256_packs_epi32(u[6], u[7]); + } + { + const __m256i k32_m08_p24 = pair256_set_epi32(-cospi_8_64, cospi_24_64); + const __m256i k32_m24_m08 = pair256_set_epi32(-cospi_24_64, -cospi_8_64); + const __m256i k32_p24_p08 = pair256_set_epi32(cospi_24_64, cospi_8_64); + + u[0] = _mm256_unpacklo_epi32(lstep1[18], lstep1[28]); + u[1] = _mm256_unpackhi_epi32(lstep1[18], lstep1[28]); + u[2] = _mm256_unpacklo_epi32(lstep1[19], lstep1[29]); + u[3] = _mm256_unpackhi_epi32(lstep1[19], lstep1[29]); + u[4] = _mm256_unpacklo_epi32(lstep1[20], lstep1[26]); + u[5] = _mm256_unpackhi_epi32(lstep1[20], lstep1[26]); + u[6] = _mm256_unpacklo_epi32(lstep1[21], lstep1[27]); + u[7] = _mm256_unpackhi_epi32(lstep1[21], lstep1[27]); + + v[0] = k_madd_epi32_avx2(u[0], k32_m08_p24); + v[1] = k_madd_epi32_avx2(u[1], k32_m08_p24); + v[2] = k_madd_epi32_avx2(u[2], k32_m08_p24); + v[3] = k_madd_epi32_avx2(u[3], k32_m08_p24); + v[4] = k_madd_epi32_avx2(u[4], k32_m24_m08); + v[5] = k_madd_epi32_avx2(u[5], k32_m24_m08); + v[6] = k_madd_epi32_avx2(u[6], k32_m24_m08); + v[7] = k_madd_epi32_avx2(u[7], k32_m24_m08); + v[ 8] = k_madd_epi32_avx2(u[4], k32_m08_p24); + v[ 9] = k_madd_epi32_avx2(u[5], k32_m08_p24); + v[10] = k_madd_epi32_avx2(u[6], k32_m08_p24); + v[11] = k_madd_epi32_avx2(u[7], k32_m08_p24); + v[12] = k_madd_epi32_avx2(u[0], k32_p24_p08); + v[13] = k_madd_epi32_avx2(u[1], k32_p24_p08); + v[14] = k_madd_epi32_avx2(u[2], k32_p24_p08); + v[15] = k_madd_epi32_avx2(u[3], k32_p24_p08); + + u[0] = k_packs_epi64_avx2(v[0], v[1]); + u[1] = k_packs_epi64_avx2(v[2], v[3]); + u[2] = k_packs_epi64_avx2(v[4], v[5]); + u[3] = k_packs_epi64_avx2(v[6], v[7]); + u[4] = k_packs_epi64_avx2(v[8], v[9]); + u[5] = k_packs_epi64_avx2(v[10], v[11]); + u[6] = k_packs_epi64_avx2(v[12], v[13]); + u[7] = k_packs_epi64_avx2(v[14], v[15]); + + u[0] = _mm256_add_epi32(u[0], k__DCT_CONST_ROUNDING); + u[1] = _mm256_add_epi32(u[1], k__DCT_CONST_ROUNDING); + u[2] = _mm256_add_epi32(u[2], k__DCT_CONST_ROUNDING); + u[3] = _mm256_add_epi32(u[3], k__DCT_CONST_ROUNDING); + u[4] = _mm256_add_epi32(u[4], k__DCT_CONST_ROUNDING); + u[5] = _mm256_add_epi32(u[5], k__DCT_CONST_ROUNDING); + u[6] = _mm256_add_epi32(u[6], k__DCT_CONST_ROUNDING); + u[7] = _mm256_add_epi32(u[7], k__DCT_CONST_ROUNDING); + + lstep2[18] = _mm256_srai_epi32(u[0], DCT_CONST_BITS); + lstep2[19] = _mm256_srai_epi32(u[1], DCT_CONST_BITS); + lstep2[20] = _mm256_srai_epi32(u[2], DCT_CONST_BITS); + lstep2[21] = _mm256_srai_epi32(u[3], DCT_CONST_BITS); + lstep2[26] = _mm256_srai_epi32(u[4], DCT_CONST_BITS); + lstep2[27] = _mm256_srai_epi32(u[5], DCT_CONST_BITS); + lstep2[28] = _mm256_srai_epi32(u[6], DCT_CONST_BITS); + lstep2[29] = _mm256_srai_epi32(u[7], DCT_CONST_BITS); + } + { + lstep2[32] = _mm256_add_epi32(lstep1[38], lstep3[32]); + lstep2[33] = _mm256_add_epi32(lstep1[39], lstep3[33]); + lstep2[34] = _mm256_add_epi32(lstep1[36], lstep3[34]); + lstep2[35] = _mm256_add_epi32(lstep1[37], lstep3[35]); + lstep2[36] = _mm256_sub_epi32(lstep3[34], lstep1[36]); + lstep2[37] = _mm256_sub_epi32(lstep3[35], lstep1[37]); + lstep2[38] = _mm256_sub_epi32(lstep3[32], lstep1[38]); + lstep2[39] = _mm256_sub_epi32(lstep3[33], lstep1[39]); + lstep2[40] = _mm256_sub_epi32(lstep3[46], lstep1[40]); + lstep2[41] = _mm256_sub_epi32(lstep3[47], lstep1[41]); + lstep2[42] = _mm256_sub_epi32(lstep3[44], lstep1[42]); + lstep2[43] = _mm256_sub_epi32(lstep3[45], lstep1[43]); + lstep2[44] = _mm256_add_epi32(lstep1[42], lstep3[44]); + lstep2[45] = _mm256_add_epi32(lstep1[43], lstep3[45]); + lstep2[46] = _mm256_add_epi32(lstep1[40], lstep3[46]); + lstep2[47] = _mm256_add_epi32(lstep1[41], lstep3[47]); + lstep2[48] = _mm256_add_epi32(lstep1[54], lstep3[48]); + lstep2[49] = _mm256_add_epi32(lstep1[55], lstep3[49]); + lstep2[50] = _mm256_add_epi32(lstep1[52], lstep3[50]); + lstep2[51] = _mm256_add_epi32(lstep1[53], lstep3[51]); + lstep2[52] = _mm256_sub_epi32(lstep3[50], lstep1[52]); + lstep2[53] = _mm256_sub_epi32(lstep3[51], lstep1[53]); + lstep2[54] = _mm256_sub_epi32(lstep3[48], lstep1[54]); + lstep2[55] = _mm256_sub_epi32(lstep3[49], lstep1[55]); + lstep2[56] = _mm256_sub_epi32(lstep3[62], lstep1[56]); + lstep2[57] = _mm256_sub_epi32(lstep3[63], lstep1[57]); + lstep2[58] = _mm256_sub_epi32(lstep3[60], lstep1[58]); + lstep2[59] = _mm256_sub_epi32(lstep3[61], lstep1[59]); + lstep2[60] = _mm256_add_epi32(lstep1[58], lstep3[60]); + lstep2[61] = _mm256_add_epi32(lstep1[59], lstep3[61]); + lstep2[62] = _mm256_add_epi32(lstep1[56], lstep3[62]); + lstep2[63] = _mm256_add_epi32(lstep1[57], lstep3[63]); + } + // stage 6 + { + const __m256i k32_p28_p04 = pair256_set_epi32(cospi_28_64, cospi_4_64); + const __m256i k32_p12_p20 = pair256_set_epi32(cospi_12_64, cospi_20_64); + const __m256i k32_m20_p12 = pair256_set_epi32(-cospi_20_64, cospi_12_64); + const __m256i k32_m04_p28 = pair256_set_epi32(-cospi_4_64, cospi_28_64); + + u[0] = _mm256_unpacklo_epi32(lstep2[ 8], lstep2[14]); + u[1] = _mm256_unpackhi_epi32(lstep2[ 8], lstep2[14]); + u[2] = _mm256_unpacklo_epi32(lstep2[ 9], lstep2[15]); + u[3] = _mm256_unpackhi_epi32(lstep2[ 9], lstep2[15]); + u[4] = _mm256_unpacklo_epi32(lstep2[10], lstep2[12]); + u[5] = _mm256_unpackhi_epi32(lstep2[10], lstep2[12]); + u[6] = _mm256_unpacklo_epi32(lstep2[11], lstep2[13]); + u[7] = _mm256_unpackhi_epi32(lstep2[11], lstep2[13]); + u[8] = _mm256_unpacklo_epi32(lstep2[10], lstep2[12]); + u[9] = _mm256_unpackhi_epi32(lstep2[10], lstep2[12]); + u[10] = _mm256_unpacklo_epi32(lstep2[11], lstep2[13]); + u[11] = _mm256_unpackhi_epi32(lstep2[11], lstep2[13]); + u[12] = _mm256_unpacklo_epi32(lstep2[ 8], lstep2[14]); + u[13] = _mm256_unpackhi_epi32(lstep2[ 8], lstep2[14]); + u[14] = _mm256_unpacklo_epi32(lstep2[ 9], lstep2[15]); + u[15] = _mm256_unpackhi_epi32(lstep2[ 9], lstep2[15]); + + v[0] = k_madd_epi32_avx2(u[0], k32_p28_p04); + v[1] = k_madd_epi32_avx2(u[1], k32_p28_p04); + v[2] = k_madd_epi32_avx2(u[2], k32_p28_p04); + v[3] = k_madd_epi32_avx2(u[3], k32_p28_p04); + v[4] = k_madd_epi32_avx2(u[4], k32_p12_p20); + v[5] = k_madd_epi32_avx2(u[5], k32_p12_p20); + v[6] = k_madd_epi32_avx2(u[6], k32_p12_p20); + v[7] = k_madd_epi32_avx2(u[7], k32_p12_p20); + v[ 8] = k_madd_epi32_avx2(u[ 8], k32_m20_p12); + v[ 9] = k_madd_epi32_avx2(u[ 9], k32_m20_p12); + v[10] = k_madd_epi32_avx2(u[10], k32_m20_p12); + v[11] = k_madd_epi32_avx2(u[11], k32_m20_p12); + v[12] = k_madd_epi32_avx2(u[12], k32_m04_p28); + v[13] = k_madd_epi32_avx2(u[13], k32_m04_p28); + v[14] = k_madd_epi32_avx2(u[14], k32_m04_p28); + v[15] = k_madd_epi32_avx2(u[15], k32_m04_p28); + + u[0] = k_packs_epi64_avx2(v[0], v[1]); + u[1] = k_packs_epi64_avx2(v[2], v[3]); + u[2] = k_packs_epi64_avx2(v[4], v[5]); + u[3] = k_packs_epi64_avx2(v[6], v[7]); + u[4] = k_packs_epi64_avx2(v[8], v[9]); + u[5] = k_packs_epi64_avx2(v[10], v[11]); + u[6] = k_packs_epi64_avx2(v[12], v[13]); + u[7] = k_packs_epi64_avx2(v[14], v[15]); + + v[0] = _mm256_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm256_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm256_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm256_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm256_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm256_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm256_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm256_add_epi32(u[7], k__DCT_CONST_ROUNDING); + + u[0] = _mm256_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm256_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm256_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm256_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm256_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm256_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm256_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm256_srai_epi32(v[7], DCT_CONST_BITS); + + sign[0] = _mm256_cmpgt_epi32(kZero,u[0]); + sign[1] = _mm256_cmpgt_epi32(kZero,u[1]); + sign[2] = _mm256_cmpgt_epi32(kZero,u[2]); + sign[3] = _mm256_cmpgt_epi32(kZero,u[3]); + sign[4] = _mm256_cmpgt_epi32(kZero,u[4]); + sign[5] = _mm256_cmpgt_epi32(kZero,u[5]); + sign[6] = _mm256_cmpgt_epi32(kZero,u[6]); + sign[7] = _mm256_cmpgt_epi32(kZero,u[7]); + + u[0] = _mm256_sub_epi32(u[0], sign[0]); + u[1] = _mm256_sub_epi32(u[1], sign[1]); + u[2] = _mm256_sub_epi32(u[2], sign[2]); + u[3] = _mm256_sub_epi32(u[3], sign[3]); + u[4] = _mm256_sub_epi32(u[4], sign[4]); + u[5] = _mm256_sub_epi32(u[5], sign[5]); + u[6] = _mm256_sub_epi32(u[6], sign[6]); + u[7] = _mm256_sub_epi32(u[7], sign[7]); + + u[0] = _mm256_add_epi32(u[0], K32One); + u[1] = _mm256_add_epi32(u[1], K32One); + u[2] = _mm256_add_epi32(u[2], K32One); + u[3] = _mm256_add_epi32(u[3], K32One); + u[4] = _mm256_add_epi32(u[4], K32One); + u[5] = _mm256_add_epi32(u[5], K32One); + u[6] = _mm256_add_epi32(u[6], K32One); + u[7] = _mm256_add_epi32(u[7], K32One); + + u[0] = _mm256_srai_epi32(u[0], 2); + u[1] = _mm256_srai_epi32(u[1], 2); + u[2] = _mm256_srai_epi32(u[2], 2); + u[3] = _mm256_srai_epi32(u[3], 2); + u[4] = _mm256_srai_epi32(u[4], 2); + u[5] = _mm256_srai_epi32(u[5], 2); + u[6] = _mm256_srai_epi32(u[6], 2); + u[7] = _mm256_srai_epi32(u[7], 2); + + out[ 4] = _mm256_packs_epi32(u[0], u[1]); + out[20] = _mm256_packs_epi32(u[2], u[3]); + out[12] = _mm256_packs_epi32(u[4], u[5]); + out[28] = _mm256_packs_epi32(u[6], u[7]); + } + { + lstep3[16] = _mm256_add_epi32(lstep2[18], lstep1[16]); + lstep3[17] = _mm256_add_epi32(lstep2[19], lstep1[17]); + lstep3[18] = _mm256_sub_epi32(lstep1[16], lstep2[18]); + lstep3[19] = _mm256_sub_epi32(lstep1[17], lstep2[19]); + lstep3[20] = _mm256_sub_epi32(lstep1[22], lstep2[20]); + lstep3[21] = _mm256_sub_epi32(lstep1[23], lstep2[21]); + lstep3[22] = _mm256_add_epi32(lstep2[20], lstep1[22]); + lstep3[23] = _mm256_add_epi32(lstep2[21], lstep1[23]); + lstep3[24] = _mm256_add_epi32(lstep2[26], lstep1[24]); + lstep3[25] = _mm256_add_epi32(lstep2[27], lstep1[25]); + lstep3[26] = _mm256_sub_epi32(lstep1[24], lstep2[26]); + lstep3[27] = _mm256_sub_epi32(lstep1[25], lstep2[27]); + lstep3[28] = _mm256_sub_epi32(lstep1[30], lstep2[28]); + lstep3[29] = _mm256_sub_epi32(lstep1[31], lstep2[29]); + lstep3[30] = _mm256_add_epi32(lstep2[28], lstep1[30]); + lstep3[31] = _mm256_add_epi32(lstep2[29], lstep1[31]); + } + { + const __m256i k32_m04_p28 = pair256_set_epi32(-cospi_4_64, cospi_28_64); + const __m256i k32_m28_m04 = pair256_set_epi32(-cospi_28_64, -cospi_4_64); + const __m256i k32_m20_p12 = pair256_set_epi32(-cospi_20_64, cospi_12_64); + const __m256i k32_m12_m20 = pair256_set_epi32(-cospi_12_64, + -cospi_20_64); + const __m256i k32_p12_p20 = pair256_set_epi32(cospi_12_64, cospi_20_64); + const __m256i k32_p28_p04 = pair256_set_epi32(cospi_28_64, cospi_4_64); + + u[ 0] = _mm256_unpacklo_epi32(lstep2[34], lstep2[60]); + u[ 1] = _mm256_unpackhi_epi32(lstep2[34], lstep2[60]); + u[ 2] = _mm256_unpacklo_epi32(lstep2[35], lstep2[61]); + u[ 3] = _mm256_unpackhi_epi32(lstep2[35], lstep2[61]); + u[ 4] = _mm256_unpacklo_epi32(lstep2[36], lstep2[58]); + u[ 5] = _mm256_unpackhi_epi32(lstep2[36], lstep2[58]); + u[ 6] = _mm256_unpacklo_epi32(lstep2[37], lstep2[59]); + u[ 7] = _mm256_unpackhi_epi32(lstep2[37], lstep2[59]); + u[ 8] = _mm256_unpacklo_epi32(lstep2[42], lstep2[52]); + u[ 9] = _mm256_unpackhi_epi32(lstep2[42], lstep2[52]); + u[10] = _mm256_unpacklo_epi32(lstep2[43], lstep2[53]); + u[11] = _mm256_unpackhi_epi32(lstep2[43], lstep2[53]); + u[12] = _mm256_unpacklo_epi32(lstep2[44], lstep2[50]); + u[13] = _mm256_unpackhi_epi32(lstep2[44], lstep2[50]); + u[14] = _mm256_unpacklo_epi32(lstep2[45], lstep2[51]); + u[15] = _mm256_unpackhi_epi32(lstep2[45], lstep2[51]); + + v[ 0] = k_madd_epi32_avx2(u[ 0], k32_m04_p28); + v[ 1] = k_madd_epi32_avx2(u[ 1], k32_m04_p28); + v[ 2] = k_madd_epi32_avx2(u[ 2], k32_m04_p28); + v[ 3] = k_madd_epi32_avx2(u[ 3], k32_m04_p28); + v[ 4] = k_madd_epi32_avx2(u[ 4], k32_m28_m04); + v[ 5] = k_madd_epi32_avx2(u[ 5], k32_m28_m04); + v[ 6] = k_madd_epi32_avx2(u[ 6], k32_m28_m04); + v[ 7] = k_madd_epi32_avx2(u[ 7], k32_m28_m04); + v[ 8] = k_madd_epi32_avx2(u[ 8], k32_m20_p12); + v[ 9] = k_madd_epi32_avx2(u[ 9], k32_m20_p12); + v[10] = k_madd_epi32_avx2(u[10], k32_m20_p12); + v[11] = k_madd_epi32_avx2(u[11], k32_m20_p12); + v[12] = k_madd_epi32_avx2(u[12], k32_m12_m20); + v[13] = k_madd_epi32_avx2(u[13], k32_m12_m20); + v[14] = k_madd_epi32_avx2(u[14], k32_m12_m20); + v[15] = k_madd_epi32_avx2(u[15], k32_m12_m20); + v[16] = k_madd_epi32_avx2(u[12], k32_m20_p12); + v[17] = k_madd_epi32_avx2(u[13], k32_m20_p12); + v[18] = k_madd_epi32_avx2(u[14], k32_m20_p12); + v[19] = k_madd_epi32_avx2(u[15], k32_m20_p12); + v[20] = k_madd_epi32_avx2(u[ 8], k32_p12_p20); + v[21] = k_madd_epi32_avx2(u[ 9], k32_p12_p20); + v[22] = k_madd_epi32_avx2(u[10], k32_p12_p20); + v[23] = k_madd_epi32_avx2(u[11], k32_p12_p20); + v[24] = k_madd_epi32_avx2(u[ 4], k32_m04_p28); + v[25] = k_madd_epi32_avx2(u[ 5], k32_m04_p28); + v[26] = k_madd_epi32_avx2(u[ 6], k32_m04_p28); + v[27] = k_madd_epi32_avx2(u[ 7], k32_m04_p28); + v[28] = k_madd_epi32_avx2(u[ 0], k32_p28_p04); + v[29] = k_madd_epi32_avx2(u[ 1], k32_p28_p04); + v[30] = k_madd_epi32_avx2(u[ 2], k32_p28_p04); + v[31] = k_madd_epi32_avx2(u[ 3], k32_p28_p04); + + u[ 0] = k_packs_epi64_avx2(v[ 0], v[ 1]); + u[ 1] = k_packs_epi64_avx2(v[ 2], v[ 3]); + u[ 2] = k_packs_epi64_avx2(v[ 4], v[ 5]); + u[ 3] = k_packs_epi64_avx2(v[ 6], v[ 7]); + u[ 4] = k_packs_epi64_avx2(v[ 8], v[ 9]); + u[ 5] = k_packs_epi64_avx2(v[10], v[11]); + u[ 6] = k_packs_epi64_avx2(v[12], v[13]); + u[ 7] = k_packs_epi64_avx2(v[14], v[15]); + u[ 8] = k_packs_epi64_avx2(v[16], v[17]); + u[ 9] = k_packs_epi64_avx2(v[18], v[19]); + u[10] = k_packs_epi64_avx2(v[20], v[21]); + u[11] = k_packs_epi64_avx2(v[22], v[23]); + u[12] = k_packs_epi64_avx2(v[24], v[25]); + u[13] = k_packs_epi64_avx2(v[26], v[27]); + u[14] = k_packs_epi64_avx2(v[28], v[29]); + u[15] = k_packs_epi64_avx2(v[30], v[31]); + + v[ 0] = _mm256_add_epi32(u[ 0], k__DCT_CONST_ROUNDING); + v[ 1] = _mm256_add_epi32(u[ 1], k__DCT_CONST_ROUNDING); + v[ 2] = _mm256_add_epi32(u[ 2], k__DCT_CONST_ROUNDING); + v[ 3] = _mm256_add_epi32(u[ 3], k__DCT_CONST_ROUNDING); + v[ 4] = _mm256_add_epi32(u[ 4], k__DCT_CONST_ROUNDING); + v[ 5] = _mm256_add_epi32(u[ 5], k__DCT_CONST_ROUNDING); + v[ 6] = _mm256_add_epi32(u[ 6], k__DCT_CONST_ROUNDING); + v[ 7] = _mm256_add_epi32(u[ 7], k__DCT_CONST_ROUNDING); + v[ 8] = _mm256_add_epi32(u[ 8], k__DCT_CONST_ROUNDING); + v[ 9] = _mm256_add_epi32(u[ 9], k__DCT_CONST_ROUNDING); + v[10] = _mm256_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm256_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm256_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm256_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm256_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm256_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + lstep3[34] = _mm256_srai_epi32(v[ 0], DCT_CONST_BITS); + lstep3[35] = _mm256_srai_epi32(v[ 1], DCT_CONST_BITS); + lstep3[36] = _mm256_srai_epi32(v[ 2], DCT_CONST_BITS); + lstep3[37] = _mm256_srai_epi32(v[ 3], DCT_CONST_BITS); + lstep3[42] = _mm256_srai_epi32(v[ 4], DCT_CONST_BITS); + lstep3[43] = _mm256_srai_epi32(v[ 5], DCT_CONST_BITS); + lstep3[44] = _mm256_srai_epi32(v[ 6], DCT_CONST_BITS); + lstep3[45] = _mm256_srai_epi32(v[ 7], DCT_CONST_BITS); + lstep3[50] = _mm256_srai_epi32(v[ 8], DCT_CONST_BITS); + lstep3[51] = _mm256_srai_epi32(v[ 9], DCT_CONST_BITS); + lstep3[52] = _mm256_srai_epi32(v[10], DCT_CONST_BITS); + lstep3[53] = _mm256_srai_epi32(v[11], DCT_CONST_BITS); + lstep3[58] = _mm256_srai_epi32(v[12], DCT_CONST_BITS); + lstep3[59] = _mm256_srai_epi32(v[13], DCT_CONST_BITS); + lstep3[60] = _mm256_srai_epi32(v[14], DCT_CONST_BITS); + lstep3[61] = _mm256_srai_epi32(v[15], DCT_CONST_BITS); + } + // stage 7 + { + const __m256i k32_p30_p02 = pair256_set_epi32(cospi_30_64, cospi_2_64); + const __m256i k32_p14_p18 = pair256_set_epi32(cospi_14_64, cospi_18_64); + const __m256i k32_p22_p10 = pair256_set_epi32(cospi_22_64, cospi_10_64); + const __m256i k32_p06_p26 = pair256_set_epi32(cospi_6_64, cospi_26_64); + const __m256i k32_m26_p06 = pair256_set_epi32(-cospi_26_64, cospi_6_64); + const __m256i k32_m10_p22 = pair256_set_epi32(-cospi_10_64, cospi_22_64); + const __m256i k32_m18_p14 = pair256_set_epi32(-cospi_18_64, cospi_14_64); + const __m256i k32_m02_p30 = pair256_set_epi32(-cospi_2_64, cospi_30_64); + + u[ 0] = _mm256_unpacklo_epi32(lstep3[16], lstep3[30]); + u[ 1] = _mm256_unpackhi_epi32(lstep3[16], lstep3[30]); + u[ 2] = _mm256_unpacklo_epi32(lstep3[17], lstep3[31]); + u[ 3] = _mm256_unpackhi_epi32(lstep3[17], lstep3[31]); + u[ 4] = _mm256_unpacklo_epi32(lstep3[18], lstep3[28]); + u[ 5] = _mm256_unpackhi_epi32(lstep3[18], lstep3[28]); + u[ 6] = _mm256_unpacklo_epi32(lstep3[19], lstep3[29]); + u[ 7] = _mm256_unpackhi_epi32(lstep3[19], lstep3[29]); + u[ 8] = _mm256_unpacklo_epi32(lstep3[20], lstep3[26]); + u[ 9] = _mm256_unpackhi_epi32(lstep3[20], lstep3[26]); + u[10] = _mm256_unpacklo_epi32(lstep3[21], lstep3[27]); + u[11] = _mm256_unpackhi_epi32(lstep3[21], lstep3[27]); + u[12] = _mm256_unpacklo_epi32(lstep3[22], lstep3[24]); + u[13] = _mm256_unpackhi_epi32(lstep3[22], lstep3[24]); + u[14] = _mm256_unpacklo_epi32(lstep3[23], lstep3[25]); + u[15] = _mm256_unpackhi_epi32(lstep3[23], lstep3[25]); + + v[ 0] = k_madd_epi32_avx2(u[ 0], k32_p30_p02); + v[ 1] = k_madd_epi32_avx2(u[ 1], k32_p30_p02); + v[ 2] = k_madd_epi32_avx2(u[ 2], k32_p30_p02); + v[ 3] = k_madd_epi32_avx2(u[ 3], k32_p30_p02); + v[ 4] = k_madd_epi32_avx2(u[ 4], k32_p14_p18); + v[ 5] = k_madd_epi32_avx2(u[ 5], k32_p14_p18); + v[ 6] = k_madd_epi32_avx2(u[ 6], k32_p14_p18); + v[ 7] = k_madd_epi32_avx2(u[ 7], k32_p14_p18); + v[ 8] = k_madd_epi32_avx2(u[ 8], k32_p22_p10); + v[ 9] = k_madd_epi32_avx2(u[ 9], k32_p22_p10); + v[10] = k_madd_epi32_avx2(u[10], k32_p22_p10); + v[11] = k_madd_epi32_avx2(u[11], k32_p22_p10); + v[12] = k_madd_epi32_avx2(u[12], k32_p06_p26); + v[13] = k_madd_epi32_avx2(u[13], k32_p06_p26); + v[14] = k_madd_epi32_avx2(u[14], k32_p06_p26); + v[15] = k_madd_epi32_avx2(u[15], k32_p06_p26); + v[16] = k_madd_epi32_avx2(u[12], k32_m26_p06); + v[17] = k_madd_epi32_avx2(u[13], k32_m26_p06); + v[18] = k_madd_epi32_avx2(u[14], k32_m26_p06); + v[19] = k_madd_epi32_avx2(u[15], k32_m26_p06); + v[20] = k_madd_epi32_avx2(u[ 8], k32_m10_p22); + v[21] = k_madd_epi32_avx2(u[ 9], k32_m10_p22); + v[22] = k_madd_epi32_avx2(u[10], k32_m10_p22); + v[23] = k_madd_epi32_avx2(u[11], k32_m10_p22); + v[24] = k_madd_epi32_avx2(u[ 4], k32_m18_p14); + v[25] = k_madd_epi32_avx2(u[ 5], k32_m18_p14); + v[26] = k_madd_epi32_avx2(u[ 6], k32_m18_p14); + v[27] = k_madd_epi32_avx2(u[ 7], k32_m18_p14); + v[28] = k_madd_epi32_avx2(u[ 0], k32_m02_p30); + v[29] = k_madd_epi32_avx2(u[ 1], k32_m02_p30); + v[30] = k_madd_epi32_avx2(u[ 2], k32_m02_p30); + v[31] = k_madd_epi32_avx2(u[ 3], k32_m02_p30); + + u[ 0] = k_packs_epi64_avx2(v[ 0], v[ 1]); + u[ 1] = k_packs_epi64_avx2(v[ 2], v[ 3]); + u[ 2] = k_packs_epi64_avx2(v[ 4], v[ 5]); + u[ 3] = k_packs_epi64_avx2(v[ 6], v[ 7]); + u[ 4] = k_packs_epi64_avx2(v[ 8], v[ 9]); + u[ 5] = k_packs_epi64_avx2(v[10], v[11]); + u[ 6] = k_packs_epi64_avx2(v[12], v[13]); + u[ 7] = k_packs_epi64_avx2(v[14], v[15]); + u[ 8] = k_packs_epi64_avx2(v[16], v[17]); + u[ 9] = k_packs_epi64_avx2(v[18], v[19]); + u[10] = k_packs_epi64_avx2(v[20], v[21]); + u[11] = k_packs_epi64_avx2(v[22], v[23]); + u[12] = k_packs_epi64_avx2(v[24], v[25]); + u[13] = k_packs_epi64_avx2(v[26], v[27]); + u[14] = k_packs_epi64_avx2(v[28], v[29]); + u[15] = k_packs_epi64_avx2(v[30], v[31]); + + v[ 0] = _mm256_add_epi32(u[ 0], k__DCT_CONST_ROUNDING); + v[ 1] = _mm256_add_epi32(u[ 1], k__DCT_CONST_ROUNDING); + v[ 2] = _mm256_add_epi32(u[ 2], k__DCT_CONST_ROUNDING); + v[ 3] = _mm256_add_epi32(u[ 3], k__DCT_CONST_ROUNDING); + v[ 4] = _mm256_add_epi32(u[ 4], k__DCT_CONST_ROUNDING); + v[ 5] = _mm256_add_epi32(u[ 5], k__DCT_CONST_ROUNDING); + v[ 6] = _mm256_add_epi32(u[ 6], k__DCT_CONST_ROUNDING); + v[ 7] = _mm256_add_epi32(u[ 7], k__DCT_CONST_ROUNDING); + v[ 8] = _mm256_add_epi32(u[ 8], k__DCT_CONST_ROUNDING); + v[ 9] = _mm256_add_epi32(u[ 9], k__DCT_CONST_ROUNDING); + v[10] = _mm256_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm256_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm256_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm256_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm256_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm256_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + u[ 0] = _mm256_srai_epi32(v[ 0], DCT_CONST_BITS); + u[ 1] = _mm256_srai_epi32(v[ 1], DCT_CONST_BITS); + u[ 2] = _mm256_srai_epi32(v[ 2], DCT_CONST_BITS); + u[ 3] = _mm256_srai_epi32(v[ 3], DCT_CONST_BITS); + u[ 4] = _mm256_srai_epi32(v[ 4], DCT_CONST_BITS); + u[ 5] = _mm256_srai_epi32(v[ 5], DCT_CONST_BITS); + u[ 6] = _mm256_srai_epi32(v[ 6], DCT_CONST_BITS); + u[ 7] = _mm256_srai_epi32(v[ 7], DCT_CONST_BITS); + u[ 8] = _mm256_srai_epi32(v[ 8], DCT_CONST_BITS); + u[ 9] = _mm256_srai_epi32(v[ 9], DCT_CONST_BITS); + u[10] = _mm256_srai_epi32(v[10], DCT_CONST_BITS); + u[11] = _mm256_srai_epi32(v[11], DCT_CONST_BITS); + u[12] = _mm256_srai_epi32(v[12], DCT_CONST_BITS); + u[13] = _mm256_srai_epi32(v[13], DCT_CONST_BITS); + u[14] = _mm256_srai_epi32(v[14], DCT_CONST_BITS); + u[15] = _mm256_srai_epi32(v[15], DCT_CONST_BITS); + + v[ 0] = _mm256_cmpgt_epi32(kZero,u[ 0]); + v[ 1] = _mm256_cmpgt_epi32(kZero,u[ 1]); + v[ 2] = _mm256_cmpgt_epi32(kZero,u[ 2]); + v[ 3] = _mm256_cmpgt_epi32(kZero,u[ 3]); + v[ 4] = _mm256_cmpgt_epi32(kZero,u[ 4]); + v[ 5] = _mm256_cmpgt_epi32(kZero,u[ 5]); + v[ 6] = _mm256_cmpgt_epi32(kZero,u[ 6]); + v[ 7] = _mm256_cmpgt_epi32(kZero,u[ 7]); + v[ 8] = _mm256_cmpgt_epi32(kZero,u[ 8]); + v[ 9] = _mm256_cmpgt_epi32(kZero,u[ 9]); + v[10] = _mm256_cmpgt_epi32(kZero,u[10]); + v[11] = _mm256_cmpgt_epi32(kZero,u[11]); + v[12] = _mm256_cmpgt_epi32(kZero,u[12]); + v[13] = _mm256_cmpgt_epi32(kZero,u[13]); + v[14] = _mm256_cmpgt_epi32(kZero,u[14]); + v[15] = _mm256_cmpgt_epi32(kZero,u[15]); + + u[ 0] = _mm256_sub_epi32(u[ 0], v[ 0]); + u[ 1] = _mm256_sub_epi32(u[ 1], v[ 1]); + u[ 2] = _mm256_sub_epi32(u[ 2], v[ 2]); + u[ 3] = _mm256_sub_epi32(u[ 3], v[ 3]); + u[ 4] = _mm256_sub_epi32(u[ 4], v[ 4]); + u[ 5] = _mm256_sub_epi32(u[ 5], v[ 5]); + u[ 6] = _mm256_sub_epi32(u[ 6], v[ 6]); + u[ 7] = _mm256_sub_epi32(u[ 7], v[ 7]); + u[ 8] = _mm256_sub_epi32(u[ 8], v[ 8]); + u[ 9] = _mm256_sub_epi32(u[ 9], v[ 9]); + u[10] = _mm256_sub_epi32(u[10], v[10]); + u[11] = _mm256_sub_epi32(u[11], v[11]); + u[12] = _mm256_sub_epi32(u[12], v[12]); + u[13] = _mm256_sub_epi32(u[13], v[13]); + u[14] = _mm256_sub_epi32(u[14], v[14]); + u[15] = _mm256_sub_epi32(u[15], v[15]); + + v[ 0] = _mm256_add_epi32(u[ 0], K32One); + v[ 1] = _mm256_add_epi32(u[ 1], K32One); + v[ 2] = _mm256_add_epi32(u[ 2], K32One); + v[ 3] = _mm256_add_epi32(u[ 3], K32One); + v[ 4] = _mm256_add_epi32(u[ 4], K32One); + v[ 5] = _mm256_add_epi32(u[ 5], K32One); + v[ 6] = _mm256_add_epi32(u[ 6], K32One); + v[ 7] = _mm256_add_epi32(u[ 7], K32One); + v[ 8] = _mm256_add_epi32(u[ 8], K32One); + v[ 9] = _mm256_add_epi32(u[ 9], K32One); + v[10] = _mm256_add_epi32(u[10], K32One); + v[11] = _mm256_add_epi32(u[11], K32One); + v[12] = _mm256_add_epi32(u[12], K32One); + v[13] = _mm256_add_epi32(u[13], K32One); + v[14] = _mm256_add_epi32(u[14], K32One); + v[15] = _mm256_add_epi32(u[15], K32One); + + u[ 0] = _mm256_srai_epi32(v[ 0], 2); + u[ 1] = _mm256_srai_epi32(v[ 1], 2); + u[ 2] = _mm256_srai_epi32(v[ 2], 2); + u[ 3] = _mm256_srai_epi32(v[ 3], 2); + u[ 4] = _mm256_srai_epi32(v[ 4], 2); + u[ 5] = _mm256_srai_epi32(v[ 5], 2); + u[ 6] = _mm256_srai_epi32(v[ 6], 2); + u[ 7] = _mm256_srai_epi32(v[ 7], 2); + u[ 8] = _mm256_srai_epi32(v[ 8], 2); + u[ 9] = _mm256_srai_epi32(v[ 9], 2); + u[10] = _mm256_srai_epi32(v[10], 2); + u[11] = _mm256_srai_epi32(v[11], 2); + u[12] = _mm256_srai_epi32(v[12], 2); + u[13] = _mm256_srai_epi32(v[13], 2); + u[14] = _mm256_srai_epi32(v[14], 2); + u[15] = _mm256_srai_epi32(v[15], 2); + + out[ 2] = _mm256_packs_epi32(u[0], u[1]); + out[18] = _mm256_packs_epi32(u[2], u[3]); + out[10] = _mm256_packs_epi32(u[4], u[5]); + out[26] = _mm256_packs_epi32(u[6], u[7]); + out[ 6] = _mm256_packs_epi32(u[8], u[9]); + out[22] = _mm256_packs_epi32(u[10], u[11]); + out[14] = _mm256_packs_epi32(u[12], u[13]); + out[30] = _mm256_packs_epi32(u[14], u[15]); + } + { + lstep1[32] = _mm256_add_epi32(lstep3[34], lstep2[32]); + lstep1[33] = _mm256_add_epi32(lstep3[35], lstep2[33]); + lstep1[34] = _mm256_sub_epi32(lstep2[32], lstep3[34]); + lstep1[35] = _mm256_sub_epi32(lstep2[33], lstep3[35]); + lstep1[36] = _mm256_sub_epi32(lstep2[38], lstep3[36]); + lstep1[37] = _mm256_sub_epi32(lstep2[39], lstep3[37]); + lstep1[38] = _mm256_add_epi32(lstep3[36], lstep2[38]); + lstep1[39] = _mm256_add_epi32(lstep3[37], lstep2[39]); + lstep1[40] = _mm256_add_epi32(lstep3[42], lstep2[40]); + lstep1[41] = _mm256_add_epi32(lstep3[43], lstep2[41]); + lstep1[42] = _mm256_sub_epi32(lstep2[40], lstep3[42]); + lstep1[43] = _mm256_sub_epi32(lstep2[41], lstep3[43]); + lstep1[44] = _mm256_sub_epi32(lstep2[46], lstep3[44]); + lstep1[45] = _mm256_sub_epi32(lstep2[47], lstep3[45]); + lstep1[46] = _mm256_add_epi32(lstep3[44], lstep2[46]); + lstep1[47] = _mm256_add_epi32(lstep3[45], lstep2[47]); + lstep1[48] = _mm256_add_epi32(lstep3[50], lstep2[48]); + lstep1[49] = _mm256_add_epi32(lstep3[51], lstep2[49]); + lstep1[50] = _mm256_sub_epi32(lstep2[48], lstep3[50]); + lstep1[51] = _mm256_sub_epi32(lstep2[49], lstep3[51]); + lstep1[52] = _mm256_sub_epi32(lstep2[54], lstep3[52]); + lstep1[53] = _mm256_sub_epi32(lstep2[55], lstep3[53]); + lstep1[54] = _mm256_add_epi32(lstep3[52], lstep2[54]); + lstep1[55] = _mm256_add_epi32(lstep3[53], lstep2[55]); + lstep1[56] = _mm256_add_epi32(lstep3[58], lstep2[56]); + lstep1[57] = _mm256_add_epi32(lstep3[59], lstep2[57]); + lstep1[58] = _mm256_sub_epi32(lstep2[56], lstep3[58]); + lstep1[59] = _mm256_sub_epi32(lstep2[57], lstep3[59]); + lstep1[60] = _mm256_sub_epi32(lstep2[62], lstep3[60]); + lstep1[61] = _mm256_sub_epi32(lstep2[63], lstep3[61]); + lstep1[62] = _mm256_add_epi32(lstep3[60], lstep2[62]); + lstep1[63] = _mm256_add_epi32(lstep3[61], lstep2[63]); + } + // stage 8 + { + const __m256i k32_p31_p01 = pair256_set_epi32(cospi_31_64, cospi_1_64); + const __m256i k32_p15_p17 = pair256_set_epi32(cospi_15_64, cospi_17_64); + const __m256i k32_p23_p09 = pair256_set_epi32(cospi_23_64, cospi_9_64); + const __m256i k32_p07_p25 = pair256_set_epi32(cospi_7_64, cospi_25_64); + const __m256i k32_m25_p07 = pair256_set_epi32(-cospi_25_64, cospi_7_64); + const __m256i k32_m09_p23 = pair256_set_epi32(-cospi_9_64, cospi_23_64); + const __m256i k32_m17_p15 = pair256_set_epi32(-cospi_17_64, cospi_15_64); + const __m256i k32_m01_p31 = pair256_set_epi32(-cospi_1_64, cospi_31_64); + + u[ 0] = _mm256_unpacklo_epi32(lstep1[32], lstep1[62]); + u[ 1] = _mm256_unpackhi_epi32(lstep1[32], lstep1[62]); + u[ 2] = _mm256_unpacklo_epi32(lstep1[33], lstep1[63]); + u[ 3] = _mm256_unpackhi_epi32(lstep1[33], lstep1[63]); + u[ 4] = _mm256_unpacklo_epi32(lstep1[34], lstep1[60]); + u[ 5] = _mm256_unpackhi_epi32(lstep1[34], lstep1[60]); + u[ 6] = _mm256_unpacklo_epi32(lstep1[35], lstep1[61]); + u[ 7] = _mm256_unpackhi_epi32(lstep1[35], lstep1[61]); + u[ 8] = _mm256_unpacklo_epi32(lstep1[36], lstep1[58]); + u[ 9] = _mm256_unpackhi_epi32(lstep1[36], lstep1[58]); + u[10] = _mm256_unpacklo_epi32(lstep1[37], lstep1[59]); + u[11] = _mm256_unpackhi_epi32(lstep1[37], lstep1[59]); + u[12] = _mm256_unpacklo_epi32(lstep1[38], lstep1[56]); + u[13] = _mm256_unpackhi_epi32(lstep1[38], lstep1[56]); + u[14] = _mm256_unpacklo_epi32(lstep1[39], lstep1[57]); + u[15] = _mm256_unpackhi_epi32(lstep1[39], lstep1[57]); + + v[ 0] = k_madd_epi32_avx2(u[ 0], k32_p31_p01); + v[ 1] = k_madd_epi32_avx2(u[ 1], k32_p31_p01); + v[ 2] = k_madd_epi32_avx2(u[ 2], k32_p31_p01); + v[ 3] = k_madd_epi32_avx2(u[ 3], k32_p31_p01); + v[ 4] = k_madd_epi32_avx2(u[ 4], k32_p15_p17); + v[ 5] = k_madd_epi32_avx2(u[ 5], k32_p15_p17); + v[ 6] = k_madd_epi32_avx2(u[ 6], k32_p15_p17); + v[ 7] = k_madd_epi32_avx2(u[ 7], k32_p15_p17); + v[ 8] = k_madd_epi32_avx2(u[ 8], k32_p23_p09); + v[ 9] = k_madd_epi32_avx2(u[ 9], k32_p23_p09); + v[10] = k_madd_epi32_avx2(u[10], k32_p23_p09); + v[11] = k_madd_epi32_avx2(u[11], k32_p23_p09); + v[12] = k_madd_epi32_avx2(u[12], k32_p07_p25); + v[13] = k_madd_epi32_avx2(u[13], k32_p07_p25); + v[14] = k_madd_epi32_avx2(u[14], k32_p07_p25); + v[15] = k_madd_epi32_avx2(u[15], k32_p07_p25); + v[16] = k_madd_epi32_avx2(u[12], k32_m25_p07); + v[17] = k_madd_epi32_avx2(u[13], k32_m25_p07); + v[18] = k_madd_epi32_avx2(u[14], k32_m25_p07); + v[19] = k_madd_epi32_avx2(u[15], k32_m25_p07); + v[20] = k_madd_epi32_avx2(u[ 8], k32_m09_p23); + v[21] = k_madd_epi32_avx2(u[ 9], k32_m09_p23); + v[22] = k_madd_epi32_avx2(u[10], k32_m09_p23); + v[23] = k_madd_epi32_avx2(u[11], k32_m09_p23); + v[24] = k_madd_epi32_avx2(u[ 4], k32_m17_p15); + v[25] = k_madd_epi32_avx2(u[ 5], k32_m17_p15); + v[26] = k_madd_epi32_avx2(u[ 6], k32_m17_p15); + v[27] = k_madd_epi32_avx2(u[ 7], k32_m17_p15); + v[28] = k_madd_epi32_avx2(u[ 0], k32_m01_p31); + v[29] = k_madd_epi32_avx2(u[ 1], k32_m01_p31); + v[30] = k_madd_epi32_avx2(u[ 2], k32_m01_p31); + v[31] = k_madd_epi32_avx2(u[ 3], k32_m01_p31); + + u[ 0] = k_packs_epi64_avx2(v[ 0], v[ 1]); + u[ 1] = k_packs_epi64_avx2(v[ 2], v[ 3]); + u[ 2] = k_packs_epi64_avx2(v[ 4], v[ 5]); + u[ 3] = k_packs_epi64_avx2(v[ 6], v[ 7]); + u[ 4] = k_packs_epi64_avx2(v[ 8], v[ 9]); + u[ 5] = k_packs_epi64_avx2(v[10], v[11]); + u[ 6] = k_packs_epi64_avx2(v[12], v[13]); + u[ 7] = k_packs_epi64_avx2(v[14], v[15]); + u[ 8] = k_packs_epi64_avx2(v[16], v[17]); + u[ 9] = k_packs_epi64_avx2(v[18], v[19]); + u[10] = k_packs_epi64_avx2(v[20], v[21]); + u[11] = k_packs_epi64_avx2(v[22], v[23]); + u[12] = k_packs_epi64_avx2(v[24], v[25]); + u[13] = k_packs_epi64_avx2(v[26], v[27]); + u[14] = k_packs_epi64_avx2(v[28], v[29]); + u[15] = k_packs_epi64_avx2(v[30], v[31]); + + v[ 0] = _mm256_add_epi32(u[ 0], k__DCT_CONST_ROUNDING); + v[ 1] = _mm256_add_epi32(u[ 1], k__DCT_CONST_ROUNDING); + v[ 2] = _mm256_add_epi32(u[ 2], k__DCT_CONST_ROUNDING); + v[ 3] = _mm256_add_epi32(u[ 3], k__DCT_CONST_ROUNDING); + v[ 4] = _mm256_add_epi32(u[ 4], k__DCT_CONST_ROUNDING); + v[ 5] = _mm256_add_epi32(u[ 5], k__DCT_CONST_ROUNDING); + v[ 6] = _mm256_add_epi32(u[ 6], k__DCT_CONST_ROUNDING); + v[ 7] = _mm256_add_epi32(u[ 7], k__DCT_CONST_ROUNDING); + v[ 8] = _mm256_add_epi32(u[ 8], k__DCT_CONST_ROUNDING); + v[ 9] = _mm256_add_epi32(u[ 9], k__DCT_CONST_ROUNDING); + v[10] = _mm256_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm256_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm256_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm256_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm256_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm256_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + u[ 0] = _mm256_srai_epi32(v[ 0], DCT_CONST_BITS); + u[ 1] = _mm256_srai_epi32(v[ 1], DCT_CONST_BITS); + u[ 2] = _mm256_srai_epi32(v[ 2], DCT_CONST_BITS); + u[ 3] = _mm256_srai_epi32(v[ 3], DCT_CONST_BITS); + u[ 4] = _mm256_srai_epi32(v[ 4], DCT_CONST_BITS); + u[ 5] = _mm256_srai_epi32(v[ 5], DCT_CONST_BITS); + u[ 6] = _mm256_srai_epi32(v[ 6], DCT_CONST_BITS); + u[ 7] = _mm256_srai_epi32(v[ 7], DCT_CONST_BITS); + u[ 8] = _mm256_srai_epi32(v[ 8], DCT_CONST_BITS); + u[ 9] = _mm256_srai_epi32(v[ 9], DCT_CONST_BITS); + u[10] = _mm256_srai_epi32(v[10], DCT_CONST_BITS); + u[11] = _mm256_srai_epi32(v[11], DCT_CONST_BITS); + u[12] = _mm256_srai_epi32(v[12], DCT_CONST_BITS); + u[13] = _mm256_srai_epi32(v[13], DCT_CONST_BITS); + u[14] = _mm256_srai_epi32(v[14], DCT_CONST_BITS); + u[15] = _mm256_srai_epi32(v[15], DCT_CONST_BITS); + + v[ 0] = _mm256_cmpgt_epi32(kZero,u[ 0]); + v[ 1] = _mm256_cmpgt_epi32(kZero,u[ 1]); + v[ 2] = _mm256_cmpgt_epi32(kZero,u[ 2]); + v[ 3] = _mm256_cmpgt_epi32(kZero,u[ 3]); + v[ 4] = _mm256_cmpgt_epi32(kZero,u[ 4]); + v[ 5] = _mm256_cmpgt_epi32(kZero,u[ 5]); + v[ 6] = _mm256_cmpgt_epi32(kZero,u[ 6]); + v[ 7] = _mm256_cmpgt_epi32(kZero,u[ 7]); + v[ 8] = _mm256_cmpgt_epi32(kZero,u[ 8]); + v[ 9] = _mm256_cmpgt_epi32(kZero,u[ 9]); + v[10] = _mm256_cmpgt_epi32(kZero,u[10]); + v[11] = _mm256_cmpgt_epi32(kZero,u[11]); + v[12] = _mm256_cmpgt_epi32(kZero,u[12]); + v[13] = _mm256_cmpgt_epi32(kZero,u[13]); + v[14] = _mm256_cmpgt_epi32(kZero,u[14]); + v[15] = _mm256_cmpgt_epi32(kZero,u[15]); + + u[ 0] = _mm256_sub_epi32(u[ 0], v[ 0]); + u[ 1] = _mm256_sub_epi32(u[ 1], v[ 1]); + u[ 2] = _mm256_sub_epi32(u[ 2], v[ 2]); + u[ 3] = _mm256_sub_epi32(u[ 3], v[ 3]); + u[ 4] = _mm256_sub_epi32(u[ 4], v[ 4]); + u[ 5] = _mm256_sub_epi32(u[ 5], v[ 5]); + u[ 6] = _mm256_sub_epi32(u[ 6], v[ 6]); + u[ 7] = _mm256_sub_epi32(u[ 7], v[ 7]); + u[ 8] = _mm256_sub_epi32(u[ 8], v[ 8]); + u[ 9] = _mm256_sub_epi32(u[ 9], v[ 9]); + u[10] = _mm256_sub_epi32(u[10], v[10]); + u[11] = _mm256_sub_epi32(u[11], v[11]); + u[12] = _mm256_sub_epi32(u[12], v[12]); + u[13] = _mm256_sub_epi32(u[13], v[13]); + u[14] = _mm256_sub_epi32(u[14], v[14]); + u[15] = _mm256_sub_epi32(u[15], v[15]); + + v[0] = _mm256_add_epi32(u[0], K32One); + v[1] = _mm256_add_epi32(u[1], K32One); + v[2] = _mm256_add_epi32(u[2], K32One); + v[3] = _mm256_add_epi32(u[3], K32One); + v[4] = _mm256_add_epi32(u[4], K32One); + v[5] = _mm256_add_epi32(u[5], K32One); + v[6] = _mm256_add_epi32(u[6], K32One); + v[7] = _mm256_add_epi32(u[7], K32One); + v[8] = _mm256_add_epi32(u[8], K32One); + v[9] = _mm256_add_epi32(u[9], K32One); + v[10] = _mm256_add_epi32(u[10], K32One); + v[11] = _mm256_add_epi32(u[11], K32One); + v[12] = _mm256_add_epi32(u[12], K32One); + v[13] = _mm256_add_epi32(u[13], K32One); + v[14] = _mm256_add_epi32(u[14], K32One); + v[15] = _mm256_add_epi32(u[15], K32One); + + u[0] = _mm256_srai_epi32(v[0], 2); + u[1] = _mm256_srai_epi32(v[1], 2); + u[2] = _mm256_srai_epi32(v[2], 2); + u[3] = _mm256_srai_epi32(v[3], 2); + u[4] = _mm256_srai_epi32(v[4], 2); + u[5] = _mm256_srai_epi32(v[5], 2); + u[6] = _mm256_srai_epi32(v[6], 2); + u[7] = _mm256_srai_epi32(v[7], 2); + u[8] = _mm256_srai_epi32(v[8], 2); + u[9] = _mm256_srai_epi32(v[9], 2); + u[10] = _mm256_srai_epi32(v[10], 2); + u[11] = _mm256_srai_epi32(v[11], 2); + u[12] = _mm256_srai_epi32(v[12], 2); + u[13] = _mm256_srai_epi32(v[13], 2); + u[14] = _mm256_srai_epi32(v[14], 2); + u[15] = _mm256_srai_epi32(v[15], 2); + + out[ 1] = _mm256_packs_epi32(u[0], u[1]); + out[17] = _mm256_packs_epi32(u[2], u[3]); + out[ 9] = _mm256_packs_epi32(u[4], u[5]); + out[25] = _mm256_packs_epi32(u[6], u[7]); + out[ 7] = _mm256_packs_epi32(u[8], u[9]); + out[23] = _mm256_packs_epi32(u[10], u[11]); + out[15] = _mm256_packs_epi32(u[12], u[13]); + out[31] = _mm256_packs_epi32(u[14], u[15]); + } + { + const __m256i k32_p27_p05 = pair256_set_epi32(cospi_27_64, cospi_5_64); + const __m256i k32_p11_p21 = pair256_set_epi32(cospi_11_64, cospi_21_64); + const __m256i k32_p19_p13 = pair256_set_epi32(cospi_19_64, cospi_13_64); + const __m256i k32_p03_p29 = pair256_set_epi32(cospi_3_64, cospi_29_64); + const __m256i k32_m29_p03 = pair256_set_epi32(-cospi_29_64, cospi_3_64); + const __m256i k32_m13_p19 = pair256_set_epi32(-cospi_13_64, cospi_19_64); + const __m256i k32_m21_p11 = pair256_set_epi32(-cospi_21_64, cospi_11_64); + const __m256i k32_m05_p27 = pair256_set_epi32(-cospi_5_64, cospi_27_64); + + u[ 0] = _mm256_unpacklo_epi32(lstep1[40], lstep1[54]); + u[ 1] = _mm256_unpackhi_epi32(lstep1[40], lstep1[54]); + u[ 2] = _mm256_unpacklo_epi32(lstep1[41], lstep1[55]); + u[ 3] = _mm256_unpackhi_epi32(lstep1[41], lstep1[55]); + u[ 4] = _mm256_unpacklo_epi32(lstep1[42], lstep1[52]); + u[ 5] = _mm256_unpackhi_epi32(lstep1[42], lstep1[52]); + u[ 6] = _mm256_unpacklo_epi32(lstep1[43], lstep1[53]); + u[ 7] = _mm256_unpackhi_epi32(lstep1[43], lstep1[53]); + u[ 8] = _mm256_unpacklo_epi32(lstep1[44], lstep1[50]); + u[ 9] = _mm256_unpackhi_epi32(lstep1[44], lstep1[50]); + u[10] = _mm256_unpacklo_epi32(lstep1[45], lstep1[51]); + u[11] = _mm256_unpackhi_epi32(lstep1[45], lstep1[51]); + u[12] = _mm256_unpacklo_epi32(lstep1[46], lstep1[48]); + u[13] = _mm256_unpackhi_epi32(lstep1[46], lstep1[48]); + u[14] = _mm256_unpacklo_epi32(lstep1[47], lstep1[49]); + u[15] = _mm256_unpackhi_epi32(lstep1[47], lstep1[49]); + + v[ 0] = k_madd_epi32_avx2(u[ 0], k32_p27_p05); + v[ 1] = k_madd_epi32_avx2(u[ 1], k32_p27_p05); + v[ 2] = k_madd_epi32_avx2(u[ 2], k32_p27_p05); + v[ 3] = k_madd_epi32_avx2(u[ 3], k32_p27_p05); + v[ 4] = k_madd_epi32_avx2(u[ 4], k32_p11_p21); + v[ 5] = k_madd_epi32_avx2(u[ 5], k32_p11_p21); + v[ 6] = k_madd_epi32_avx2(u[ 6], k32_p11_p21); + v[ 7] = k_madd_epi32_avx2(u[ 7], k32_p11_p21); + v[ 8] = k_madd_epi32_avx2(u[ 8], k32_p19_p13); + v[ 9] = k_madd_epi32_avx2(u[ 9], k32_p19_p13); + v[10] = k_madd_epi32_avx2(u[10], k32_p19_p13); + v[11] = k_madd_epi32_avx2(u[11], k32_p19_p13); + v[12] = k_madd_epi32_avx2(u[12], k32_p03_p29); + v[13] = k_madd_epi32_avx2(u[13], k32_p03_p29); + v[14] = k_madd_epi32_avx2(u[14], k32_p03_p29); + v[15] = k_madd_epi32_avx2(u[15], k32_p03_p29); + v[16] = k_madd_epi32_avx2(u[12], k32_m29_p03); + v[17] = k_madd_epi32_avx2(u[13], k32_m29_p03); + v[18] = k_madd_epi32_avx2(u[14], k32_m29_p03); + v[19] = k_madd_epi32_avx2(u[15], k32_m29_p03); + v[20] = k_madd_epi32_avx2(u[ 8], k32_m13_p19); + v[21] = k_madd_epi32_avx2(u[ 9], k32_m13_p19); + v[22] = k_madd_epi32_avx2(u[10], k32_m13_p19); + v[23] = k_madd_epi32_avx2(u[11], k32_m13_p19); + v[24] = k_madd_epi32_avx2(u[ 4], k32_m21_p11); + v[25] = k_madd_epi32_avx2(u[ 5], k32_m21_p11); + v[26] = k_madd_epi32_avx2(u[ 6], k32_m21_p11); + v[27] = k_madd_epi32_avx2(u[ 7], k32_m21_p11); + v[28] = k_madd_epi32_avx2(u[ 0], k32_m05_p27); + v[29] = k_madd_epi32_avx2(u[ 1], k32_m05_p27); + v[30] = k_madd_epi32_avx2(u[ 2], k32_m05_p27); + v[31] = k_madd_epi32_avx2(u[ 3], k32_m05_p27); + + u[ 0] = k_packs_epi64_avx2(v[ 0], v[ 1]); + u[ 1] = k_packs_epi64_avx2(v[ 2], v[ 3]); + u[ 2] = k_packs_epi64_avx2(v[ 4], v[ 5]); + u[ 3] = k_packs_epi64_avx2(v[ 6], v[ 7]); + u[ 4] = k_packs_epi64_avx2(v[ 8], v[ 9]); + u[ 5] = k_packs_epi64_avx2(v[10], v[11]); + u[ 6] = k_packs_epi64_avx2(v[12], v[13]); + u[ 7] = k_packs_epi64_avx2(v[14], v[15]); + u[ 8] = k_packs_epi64_avx2(v[16], v[17]); + u[ 9] = k_packs_epi64_avx2(v[18], v[19]); + u[10] = k_packs_epi64_avx2(v[20], v[21]); + u[11] = k_packs_epi64_avx2(v[22], v[23]); + u[12] = k_packs_epi64_avx2(v[24], v[25]); + u[13] = k_packs_epi64_avx2(v[26], v[27]); + u[14] = k_packs_epi64_avx2(v[28], v[29]); + u[15] = k_packs_epi64_avx2(v[30], v[31]); + + v[ 0] = _mm256_add_epi32(u[ 0], k__DCT_CONST_ROUNDING); + v[ 1] = _mm256_add_epi32(u[ 1], k__DCT_CONST_ROUNDING); + v[ 2] = _mm256_add_epi32(u[ 2], k__DCT_CONST_ROUNDING); + v[ 3] = _mm256_add_epi32(u[ 3], k__DCT_CONST_ROUNDING); + v[ 4] = _mm256_add_epi32(u[ 4], k__DCT_CONST_ROUNDING); + v[ 5] = _mm256_add_epi32(u[ 5], k__DCT_CONST_ROUNDING); + v[ 6] = _mm256_add_epi32(u[ 6], k__DCT_CONST_ROUNDING); + v[ 7] = _mm256_add_epi32(u[ 7], k__DCT_CONST_ROUNDING); + v[ 8] = _mm256_add_epi32(u[ 8], k__DCT_CONST_ROUNDING); + v[ 9] = _mm256_add_epi32(u[ 9], k__DCT_CONST_ROUNDING); + v[10] = _mm256_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm256_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm256_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm256_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm256_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm256_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + u[ 0] = _mm256_srai_epi32(v[ 0], DCT_CONST_BITS); + u[ 1] = _mm256_srai_epi32(v[ 1], DCT_CONST_BITS); + u[ 2] = _mm256_srai_epi32(v[ 2], DCT_CONST_BITS); + u[ 3] = _mm256_srai_epi32(v[ 3], DCT_CONST_BITS); + u[ 4] = _mm256_srai_epi32(v[ 4], DCT_CONST_BITS); + u[ 5] = _mm256_srai_epi32(v[ 5], DCT_CONST_BITS); + u[ 6] = _mm256_srai_epi32(v[ 6], DCT_CONST_BITS); + u[ 7] = _mm256_srai_epi32(v[ 7], DCT_CONST_BITS); + u[ 8] = _mm256_srai_epi32(v[ 8], DCT_CONST_BITS); + u[ 9] = _mm256_srai_epi32(v[ 9], DCT_CONST_BITS); + u[10] = _mm256_srai_epi32(v[10], DCT_CONST_BITS); + u[11] = _mm256_srai_epi32(v[11], DCT_CONST_BITS); + u[12] = _mm256_srai_epi32(v[12], DCT_CONST_BITS); + u[13] = _mm256_srai_epi32(v[13], DCT_CONST_BITS); + u[14] = _mm256_srai_epi32(v[14], DCT_CONST_BITS); + u[15] = _mm256_srai_epi32(v[15], DCT_CONST_BITS); + + v[ 0] = _mm256_cmpgt_epi32(kZero,u[ 0]); + v[ 1] = _mm256_cmpgt_epi32(kZero,u[ 1]); + v[ 2] = _mm256_cmpgt_epi32(kZero,u[ 2]); + v[ 3] = _mm256_cmpgt_epi32(kZero,u[ 3]); + v[ 4] = _mm256_cmpgt_epi32(kZero,u[ 4]); + v[ 5] = _mm256_cmpgt_epi32(kZero,u[ 5]); + v[ 6] = _mm256_cmpgt_epi32(kZero,u[ 6]); + v[ 7] = _mm256_cmpgt_epi32(kZero,u[ 7]); + v[ 8] = _mm256_cmpgt_epi32(kZero,u[ 8]); + v[ 9] = _mm256_cmpgt_epi32(kZero,u[ 9]); + v[10] = _mm256_cmpgt_epi32(kZero,u[10]); + v[11] = _mm256_cmpgt_epi32(kZero,u[11]); + v[12] = _mm256_cmpgt_epi32(kZero,u[12]); + v[13] = _mm256_cmpgt_epi32(kZero,u[13]); + v[14] = _mm256_cmpgt_epi32(kZero,u[14]); + v[15] = _mm256_cmpgt_epi32(kZero,u[15]); + + u[ 0] = _mm256_sub_epi32(u[ 0], v[ 0]); + u[ 1] = _mm256_sub_epi32(u[ 1], v[ 1]); + u[ 2] = _mm256_sub_epi32(u[ 2], v[ 2]); + u[ 3] = _mm256_sub_epi32(u[ 3], v[ 3]); + u[ 4] = _mm256_sub_epi32(u[ 4], v[ 4]); + u[ 5] = _mm256_sub_epi32(u[ 5], v[ 5]); + u[ 6] = _mm256_sub_epi32(u[ 6], v[ 6]); + u[ 7] = _mm256_sub_epi32(u[ 7], v[ 7]); + u[ 8] = _mm256_sub_epi32(u[ 8], v[ 8]); + u[ 9] = _mm256_sub_epi32(u[ 9], v[ 9]); + u[10] = _mm256_sub_epi32(u[10], v[10]); + u[11] = _mm256_sub_epi32(u[11], v[11]); + u[12] = _mm256_sub_epi32(u[12], v[12]); + u[13] = _mm256_sub_epi32(u[13], v[13]); + u[14] = _mm256_sub_epi32(u[14], v[14]); + u[15] = _mm256_sub_epi32(u[15], v[15]); + + v[0] = _mm256_add_epi32(u[0], K32One); + v[1] = _mm256_add_epi32(u[1], K32One); + v[2] = _mm256_add_epi32(u[2], K32One); + v[3] = _mm256_add_epi32(u[3], K32One); + v[4] = _mm256_add_epi32(u[4], K32One); + v[5] = _mm256_add_epi32(u[5], K32One); + v[6] = _mm256_add_epi32(u[6], K32One); + v[7] = _mm256_add_epi32(u[7], K32One); + v[8] = _mm256_add_epi32(u[8], K32One); + v[9] = _mm256_add_epi32(u[9], K32One); + v[10] = _mm256_add_epi32(u[10], K32One); + v[11] = _mm256_add_epi32(u[11], K32One); + v[12] = _mm256_add_epi32(u[12], K32One); + v[13] = _mm256_add_epi32(u[13], K32One); + v[14] = _mm256_add_epi32(u[14], K32One); + v[15] = _mm256_add_epi32(u[15], K32One); + + u[0] = _mm256_srai_epi32(v[0], 2); + u[1] = _mm256_srai_epi32(v[1], 2); + u[2] = _mm256_srai_epi32(v[2], 2); + u[3] = _mm256_srai_epi32(v[3], 2); + u[4] = _mm256_srai_epi32(v[4], 2); + u[5] = _mm256_srai_epi32(v[5], 2); + u[6] = _mm256_srai_epi32(v[6], 2); + u[7] = _mm256_srai_epi32(v[7], 2); + u[8] = _mm256_srai_epi32(v[8], 2); + u[9] = _mm256_srai_epi32(v[9], 2); + u[10] = _mm256_srai_epi32(v[10], 2); + u[11] = _mm256_srai_epi32(v[11], 2); + u[12] = _mm256_srai_epi32(v[12], 2); + u[13] = _mm256_srai_epi32(v[13], 2); + u[14] = _mm256_srai_epi32(v[14], 2); + u[15] = _mm256_srai_epi32(v[15], 2); + + out[ 5] = _mm256_packs_epi32(u[0], u[1]); + out[21] = _mm256_packs_epi32(u[2], u[3]); + out[13] = _mm256_packs_epi32(u[4], u[5]); + out[29] = _mm256_packs_epi32(u[6], u[7]); + out[ 3] = _mm256_packs_epi32(u[8], u[9]); + out[19] = _mm256_packs_epi32(u[10], u[11]); + out[11] = _mm256_packs_epi32(u[12], u[13]); + out[27] = _mm256_packs_epi32(u[14], u[15]); + } + } +#endif + // Transpose the results, do it as four 8x8 transposes. + { + int transpose_block; + int16_t *output_currStep,*output_nextStep; + if (0 == pass){ + output_currStep = &intermediate[column_start * 32]; + output_nextStep = &intermediate[(column_start + 8) * 32]; + } else{ + output_currStep = &output_org[column_start * 32]; + output_nextStep = &output_org[(column_start + 8) * 32]; + } + for (transpose_block = 0; transpose_block < 4; ++transpose_block) { + __m256i *this_out = &out[8 * transpose_block]; + // 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 + // 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 + // 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 + // 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 + // 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 + // 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 + // 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 + // 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 + const __m256i tr0_0 = _mm256_unpacklo_epi16(this_out[0], this_out[1]); + const __m256i tr0_1 = _mm256_unpacklo_epi16(this_out[2], this_out[3]); + const __m256i tr0_2 = _mm256_unpackhi_epi16(this_out[0], this_out[1]); + const __m256i tr0_3 = _mm256_unpackhi_epi16(this_out[2], this_out[3]); + const __m256i tr0_4 = _mm256_unpacklo_epi16(this_out[4], this_out[5]); + const __m256i tr0_5 = _mm256_unpacklo_epi16(this_out[6], this_out[7]); + const __m256i tr0_6 = _mm256_unpackhi_epi16(this_out[4], this_out[5]); + const __m256i tr0_7 = _mm256_unpackhi_epi16(this_out[6], this_out[7]); + // 00 20 01 21 02 22 03 23 08 28 09 29 10 30 11 31 + // 40 60 41 61 42 62 43 63 48 68 49 69 50 70 51 71 + // 04 24 05 25 06 26 07 27 12 32 13 33 14 34 15 35 + // 44 64 45 65 46 66 47 67 52 72 53 73 54 74 55 75 + // 80 100 81 101 82 102 83 103 88 108 89 109 90 110 91 101 + // 120 140 121 141 122 142 123 143 128 148 129 149 130 150 131 151 + // 84 104 85 105 86 106 87 107 92 112 93 113 94 114 95 115 + // 124 144 125 145 126 146 127 147 132 152 133 153 134 154 135 155 + + const __m256i tr1_0 = _mm256_unpacklo_epi32(tr0_0, tr0_1); + const __m256i tr1_1 = _mm256_unpacklo_epi32(tr0_2, tr0_3); + const __m256i tr1_2 = _mm256_unpackhi_epi32(tr0_0, tr0_1); + const __m256i tr1_3 = _mm256_unpackhi_epi32(tr0_2, tr0_3); + const __m256i tr1_4 = _mm256_unpacklo_epi32(tr0_4, tr0_5); + const __m256i tr1_5 = _mm256_unpacklo_epi32(tr0_6, tr0_7); + const __m256i tr1_6 = _mm256_unpackhi_epi32(tr0_4, tr0_5); + const __m256i tr1_7 = _mm256_unpackhi_epi32(tr0_6, tr0_7); + // 00 20 40 60 01 21 41 61 08 28 48 68 09 29 49 69 + // 04 24 44 64 05 25 45 65 12 32 52 72 13 33 53 73 + // 02 22 42 62 03 23 43 63 10 30 50 70 11 31 51 71 + // 06 26 46 66 07 27 47 67 14 34 54 74 15 35 55 75 + // 80 100 120 140 81 101 121 141 88 108 128 148 89 109 129 149 + // 84 104 124 144 85 105 125 145 92 112 132 152 93 113 133 153 + // 82 102 122 142 83 103 123 143 90 110 130 150 91 101 131 151 + // 86 106 126 146 87 107 127 147 94 114 134 154 95 115 135 155 + __m256i tr2_0 = _mm256_unpacklo_epi64(tr1_0, tr1_4); + __m256i tr2_1 = _mm256_unpackhi_epi64(tr1_0, tr1_4); + __m256i tr2_2 = _mm256_unpacklo_epi64(tr1_2, tr1_6); + __m256i tr2_3 = _mm256_unpackhi_epi64(tr1_2, tr1_6); + __m256i tr2_4 = _mm256_unpacklo_epi64(tr1_1, tr1_5); + __m256i tr2_5 = _mm256_unpackhi_epi64(tr1_1, tr1_5); + __m256i tr2_6 = _mm256_unpacklo_epi64(tr1_3, tr1_7); + __m256i tr2_7 = _mm256_unpackhi_epi64(tr1_3, tr1_7); + // 00 20 40 60 80 100 120 140 08 28 48 68 88 108 128 148 + // 01 21 41 61 81 101 121 141 09 29 49 69 89 109 129 149 + // 02 22 42 62 82 102 122 142 10 30 50 70 90 110 130 150 + // 03 23 43 63 83 103 123 143 11 31 51 71 91 101 131 151 + // 04 24 44 64 84 104 124 144 12 32 52 72 92 112 132 152 + // 05 25 45 65 85 105 125 145 13 33 53 73 93 113 133 153 + // 06 26 46 66 86 106 126 146 14 34 54 74 94 114 134 154 + // 07 27 47 67 87 107 127 147 15 35 55 75 95 115 135 155 + if (0 == pass) { + // output[j] = (output[j] + 1 + (output[j] > 0)) >> 2; + // TODO(cd): see quality impact of only doing + // output[j] = (output[j] + 1) >> 2; + // which would remove the code between here ... + __m256i tr2_0_0 = _mm256_cmpgt_epi16(tr2_0, kZero); + __m256i tr2_1_0 = _mm256_cmpgt_epi16(tr2_1, kZero); + __m256i tr2_2_0 = _mm256_cmpgt_epi16(tr2_2, kZero); + __m256i tr2_3_0 = _mm256_cmpgt_epi16(tr2_3, kZero); + __m256i tr2_4_0 = _mm256_cmpgt_epi16(tr2_4, kZero); + __m256i tr2_5_0 = _mm256_cmpgt_epi16(tr2_5, kZero); + __m256i tr2_6_0 = _mm256_cmpgt_epi16(tr2_6, kZero); + __m256i tr2_7_0 = _mm256_cmpgt_epi16(tr2_7, kZero); + tr2_0 = _mm256_sub_epi16(tr2_0, tr2_0_0); + tr2_1 = _mm256_sub_epi16(tr2_1, tr2_1_0); + tr2_2 = _mm256_sub_epi16(tr2_2, tr2_2_0); + tr2_3 = _mm256_sub_epi16(tr2_3, tr2_3_0); + tr2_4 = _mm256_sub_epi16(tr2_4, tr2_4_0); + tr2_5 = _mm256_sub_epi16(tr2_5, tr2_5_0); + tr2_6 = _mm256_sub_epi16(tr2_6, tr2_6_0); + tr2_7 = _mm256_sub_epi16(tr2_7, tr2_7_0); + // ... and here. + // PS: also change code in vp9/encoder/vp9_dct.c + tr2_0 = _mm256_add_epi16(tr2_0, kOne); + tr2_1 = _mm256_add_epi16(tr2_1, kOne); + tr2_2 = _mm256_add_epi16(tr2_2, kOne); + tr2_3 = _mm256_add_epi16(tr2_3, kOne); + tr2_4 = _mm256_add_epi16(tr2_4, kOne); + tr2_5 = _mm256_add_epi16(tr2_5, kOne); + tr2_6 = _mm256_add_epi16(tr2_6, kOne); + tr2_7 = _mm256_add_epi16(tr2_7, kOne); + tr2_0 = _mm256_srai_epi16(tr2_0, 2); + tr2_1 = _mm256_srai_epi16(tr2_1, 2); + tr2_2 = _mm256_srai_epi16(tr2_2, 2); + tr2_3 = _mm256_srai_epi16(tr2_3, 2); + tr2_4 = _mm256_srai_epi16(tr2_4, 2); + tr2_5 = _mm256_srai_epi16(tr2_5, 2); + tr2_6 = _mm256_srai_epi16(tr2_6, 2); + tr2_7 = _mm256_srai_epi16(tr2_7, 2); + } + // Note: even though all these stores are aligned, using the aligned + // intrinsic make the code slightly slower. + _mm_storeu_si128((__m128i *)(output_currStep + 0 * 32), _mm256_castsi256_si128(tr2_0)); + _mm_storeu_si128((__m128i *)(output_currStep + 1 * 32), _mm256_castsi256_si128(tr2_1)); + _mm_storeu_si128((__m128i *)(output_currStep + 2 * 32), _mm256_castsi256_si128(tr2_2)); + _mm_storeu_si128((__m128i *)(output_currStep + 3 * 32), _mm256_castsi256_si128(tr2_3)); + _mm_storeu_si128((__m128i *)(output_currStep + 4 * 32), _mm256_castsi256_si128(tr2_4)); + _mm_storeu_si128((__m128i *)(output_currStep + 5 * 32), _mm256_castsi256_si128(tr2_5)); + _mm_storeu_si128((__m128i *)(output_currStep + 6 * 32), _mm256_castsi256_si128(tr2_6)); + _mm_storeu_si128((__m128i *)(output_currStep + 7 * 32), _mm256_castsi256_si128(tr2_7)); + + _mm_storeu_si128((__m128i *)(output_nextStep + 0 * 32), _mm256_extractf128_si256(tr2_0,1)); + _mm_storeu_si128((__m128i *)(output_nextStep + 1 * 32), _mm256_extractf128_si256(tr2_1,1)); + _mm_storeu_si128((__m128i *)(output_nextStep + 2 * 32), _mm256_extractf128_si256(tr2_2,1)); + _mm_storeu_si128((__m128i *)(output_nextStep + 3 * 32), _mm256_extractf128_si256(tr2_3,1)); + _mm_storeu_si128((__m128i *)(output_nextStep + 4 * 32), _mm256_extractf128_si256(tr2_4,1)); + _mm_storeu_si128((__m128i *)(output_nextStep + 5 * 32), _mm256_extractf128_si256(tr2_5,1)); + _mm_storeu_si128((__m128i *)(output_nextStep + 6 * 32), _mm256_extractf128_si256(tr2_6,1)); + _mm_storeu_si128((__m128i *)(output_nextStep + 7 * 32), _mm256_extractf128_si256(tr2_7,1)); + // Process next 8x8 + output_currStep += 8; + output_nextStep += 8; + } + } + } + } +} // NOLINT diff --git a/vp9/encoder/x86/vp9_dct_avx2.c b/vp9/encoder/x86/vp9_dct_avx2.c new file mode 100644 index 000000000..d81b72bba --- /dev/null +++ b/vp9/encoder/x86/vp9_dct_avx2.c @@ -0,0 +1,2579 @@ +/* + * Copyright (c) 2012 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include <immintrin.h> // AVX2 +#include "vp9/common/vp9_idct.h" // for cospi constants +#include "vpx_ports/mem.h" + +void vp9_fdct4x4_avx2(const int16_t *input, int16_t *output, int stride) { + // The 2D transform is done with two passes which are actually pretty + // similar. In the first one, we transform the columns and transpose + // the results. In the second one, we transform the rows. To achieve that, + // as the first pass results are transposed, we tranpose the columns (that + // is the transposed rows) and transpose the results (so that it goes back + // in normal/row positions). + int pass; + // Constants + // When we use them, in one case, they are all the same. In all others + // it's a pair of them that we need to repeat four times. This is done + // by constructing the 32 bit constant corresponding to that pair. + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); + const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1); + const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0); + const __m128i kOne = _mm_set1_epi16(1); + __m128i in0, in1, in2, in3; + // Load inputs. + { + in0 = _mm_loadl_epi64((const __m128i *)(input + 0 * stride)); + in1 = _mm_loadl_epi64((const __m128i *)(input + 1 * stride)); + in2 = _mm_loadl_epi64((const __m128i *)(input + 2 * stride)); + in3 = _mm_loadl_epi64((const __m128i *)(input + 3 * stride)); + // x = x << 4 + in0 = _mm_slli_epi16(in0, 4); + in1 = _mm_slli_epi16(in1, 4); + in2 = _mm_slli_epi16(in2, 4); + in3 = _mm_slli_epi16(in3, 4); + // if (i == 0 && input[0]) input[0] += 1; + { + // The mask will only contain wether the first value is zero, all + // other comparison will fail as something shifted by 4 (above << 4) + // can never be equal to one. To increment in the non-zero case, we + // add the mask and one for the first element: + // - if zero, mask = -1, v = v - 1 + 1 = v + // - if non-zero, mask = 0, v = v + 0 + 1 = v + 1 + __m128i mask = _mm_cmpeq_epi16(in0, k__nonzero_bias_a); + in0 = _mm_add_epi16(in0, mask); + in0 = _mm_add_epi16(in0, k__nonzero_bias_b); + } + } + // Do the two transform/transpose passes + for (pass = 0; pass < 2; ++pass) { + // Transform 1/2: Add/substract + const __m128i r0 = _mm_add_epi16(in0, in3); + const __m128i r1 = _mm_add_epi16(in1, in2); + const __m128i r2 = _mm_sub_epi16(in1, in2); + const __m128i r3 = _mm_sub_epi16(in0, in3); + // Transform 1/2: Interleave to do the multiply by constants which gets us + // into 32 bits. + const __m128i t0 = _mm_unpacklo_epi16(r0, r1); + const __m128i t2 = _mm_unpacklo_epi16(r2, r3); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); + const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); + const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); + const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); + const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + // Combine and transpose + const __m128i res0 = _mm_packs_epi32(w0, w2); + const __m128i res1 = _mm_packs_epi32(w4, w6); + // 00 01 02 03 20 21 22 23 + // 10 11 12 13 30 31 32 33 + const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1); + const __m128i tr0_1 = _mm_unpackhi_epi16(res0, res1); + // 00 10 01 11 02 12 03 13 + // 20 30 21 31 22 32 23 33 + in0 = _mm_unpacklo_epi32(tr0_0, tr0_1); + in2 = _mm_unpackhi_epi32(tr0_0, tr0_1); + // 00 10 20 30 01 11 21 31 in0 contains 0 followed by 1 + // 02 12 22 32 03 13 23 33 in2 contains 2 followed by 3 + if (0 == pass) { + // Extract values in the high part for second pass as transform code + // only uses the first four values. + in1 = _mm_unpackhi_epi64(in0, in0); + in3 = _mm_unpackhi_epi64(in2, in2); + } else { + // Post-condition output and store it (v + 1) >> 2, taking advantage + // of the fact 1/3 are stored just after 0/2. + __m128i out01 = _mm_add_epi16(in0, kOne); + __m128i out23 = _mm_add_epi16(in2, kOne); + out01 = _mm_srai_epi16(out01, 2); + out23 = _mm_srai_epi16(out23, 2); + _mm_storeu_si128((__m128i *)(output + 0 * 4), out01); + _mm_storeu_si128((__m128i *)(output + 2 * 4), out23); + } + } +} + +static INLINE void load_buffer_4x4_avx2(const int16_t *input, __m128i *in, + int stride) { + const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1); + const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0); + __m128i mask; + + in[0] = _mm_loadl_epi64((const __m128i *)(input + 0 * stride)); + in[1] = _mm_loadl_epi64((const __m128i *)(input + 1 * stride)); + in[2] = _mm_loadl_epi64((const __m128i *)(input + 2 * stride)); + in[3] = _mm_loadl_epi64((const __m128i *)(input + 3 * stride)); + + in[0] = _mm_slli_epi16(in[0], 4); + in[1] = _mm_slli_epi16(in[1], 4); + in[2] = _mm_slli_epi16(in[2], 4); + in[3] = _mm_slli_epi16(in[3], 4); + + mask = _mm_cmpeq_epi16(in[0], k__nonzero_bias_a); + in[0] = _mm_add_epi16(in[0], mask); + in[0] = _mm_add_epi16(in[0], k__nonzero_bias_b); +} + +static INLINE void write_buffer_4x4_avx2(int16_t *output, __m128i *res) { + const __m128i kOne = _mm_set1_epi16(1); + __m128i in01 = _mm_unpacklo_epi64(res[0], res[1]); + __m128i in23 = _mm_unpacklo_epi64(res[2], res[3]); + __m128i out01 = _mm_add_epi16(in01, kOne); + __m128i out23 = _mm_add_epi16(in23, kOne); + out01 = _mm_srai_epi16(out01, 2); + out23 = _mm_srai_epi16(out23, 2); + _mm_store_si128((__m128i *)(output + 0 * 8), out01); + _mm_store_si128((__m128i *)(output + 1 * 8), out23); +} + +static INLINE void transpose_4x4_avx2(__m128i *res) { + // Combine and transpose + // 00 01 02 03 20 21 22 23 + // 10 11 12 13 30 31 32 33 + const __m128i tr0_0 = _mm_unpacklo_epi16(res[0], res[1]); + const __m128i tr0_1 = _mm_unpackhi_epi16(res[0], res[1]); + + // 00 10 01 11 02 12 03 13 + // 20 30 21 31 22 32 23 33 + res[0] = _mm_unpacklo_epi32(tr0_0, tr0_1); + res[2] = _mm_unpackhi_epi32(tr0_0, tr0_1); + + // 00 10 20 30 01 11 21 31 + // 02 12 22 32 03 13 23 33 + // only use the first 4 16-bit integers + res[1] = _mm_unpackhi_epi64(res[0], res[0]); + res[3] = _mm_unpackhi_epi64(res[2], res[2]); +} + +void fdct4_1d_avx2(__m128i *in) { + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64); + const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + + __m128i u[4], v[4]; + u[0]=_mm_unpacklo_epi16(in[0], in[1]); + u[1]=_mm_unpacklo_epi16(in[3], in[2]); + + v[0] = _mm_add_epi16(u[0], u[1]); + v[1] = _mm_sub_epi16(u[0], u[1]); + + u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16); // 0 + u[1] = _mm_madd_epi16(v[0], k__cospi_p16_m16); // 2 + u[2] = _mm_madd_epi16(v[1], k__cospi_p08_p24); // 1 + u[3] = _mm_madd_epi16(v[1], k__cospi_p24_m08); // 3 + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u[0], u[1]); + in[1] = _mm_packs_epi32(u[2], u[3]); + transpose_4x4_avx2(in); +} + +void fadst4_1d_avx2(__m128i *in) { + const __m128i k__sinpi_p01_p02 = pair_set_epi16(sinpi_1_9, sinpi_2_9); + const __m128i k__sinpi_p04_m01 = pair_set_epi16(sinpi_4_9, -sinpi_1_9); + const __m128i k__sinpi_p03_p04 = pair_set_epi16(sinpi_3_9, sinpi_4_9); + const __m128i k__sinpi_m03_p02 = pair_set_epi16(-sinpi_3_9, sinpi_2_9); + const __m128i k__sinpi_p03_p03 = _mm_set1_epi16(sinpi_3_9); + const __m128i kZero = _mm_set1_epi16(0); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + __m128i u[8], v[8]; + __m128i in7 = _mm_add_epi16(in[0], in[1]); + + u[0] = _mm_unpacklo_epi16(in[0], in[1]); + u[1] = _mm_unpacklo_epi16(in[2], in[3]); + u[2] = _mm_unpacklo_epi16(in7, kZero); + u[3] = _mm_unpacklo_epi16(in[2], kZero); + u[4] = _mm_unpacklo_epi16(in[3], kZero); + + v[0] = _mm_madd_epi16(u[0], k__sinpi_p01_p02); // s0 + s2 + v[1] = _mm_madd_epi16(u[1], k__sinpi_p03_p04); // s4 + s5 + v[2] = _mm_madd_epi16(u[2], k__sinpi_p03_p03); // x1 + v[3] = _mm_madd_epi16(u[0], k__sinpi_p04_m01); // s1 - s3 + v[4] = _mm_madd_epi16(u[1], k__sinpi_m03_p02); // -s4 + s6 + v[5] = _mm_madd_epi16(u[3], k__sinpi_p03_p03); // s4 + v[6] = _mm_madd_epi16(u[4], k__sinpi_p03_p03); + + u[0] = _mm_add_epi32(v[0], v[1]); + u[1] = _mm_sub_epi32(v[2], v[6]); + u[2] = _mm_add_epi32(v[3], v[4]); + u[3] = _mm_sub_epi32(u[2], u[0]); + u[4] = _mm_slli_epi32(v[5], 2); + u[5] = _mm_sub_epi32(u[4], v[5]); + u[6] = _mm_add_epi32(u[3], u[5]); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u[0], u[2]); + in[1] = _mm_packs_epi32(u[1], u[3]); + transpose_4x4_avx2(in); +} + +void vp9_short_fht4x4_avx2(const int16_t *input, int16_t *output, + int stride, int tx_type) { + __m128i in[4]; + load_buffer_4x4_avx2(input, in, stride); + switch (tx_type) { + case 0: // DCT_DCT + fdct4_1d_avx2(in); + fdct4_1d_avx2(in); + break; + case 1: // ADST_DCT + fadst4_1d_avx2(in); + fdct4_1d_avx2(in); + break; + case 2: // DCT_ADST + fdct4_1d_avx2(in); + fadst4_1d_avx2(in); + break; + case 3: // ADST_ADST + fadst4_1d_avx2(in); + fadst4_1d_avx2(in); + break; + default: + assert(0); + break; + } + write_buffer_4x4_avx2(output, in); +} + +void vp9_fdct8x8_avx2(const int16_t *input, int16_t *output, int stride) { + int pass; + // Constants + // When we use them, in one case, they are all the same. In all others + // it's a pair of them that we need to repeat four times. This is done + // by constructing the 32 bit constant corresponding to that pair. + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); + const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); + const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); + const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); + const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); + const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + // Load input + __m128i in0 = _mm_load_si128((const __m128i *)(input + 0 * stride)); + __m128i in1 = _mm_load_si128((const __m128i *)(input + 1 * stride)); + __m128i in2 = _mm_load_si128((const __m128i *)(input + 2 * stride)); + __m128i in3 = _mm_load_si128((const __m128i *)(input + 3 * stride)); + __m128i in4 = _mm_load_si128((const __m128i *)(input + 4 * stride)); + __m128i in5 = _mm_load_si128((const __m128i *)(input + 5 * stride)); + __m128i in6 = _mm_load_si128((const __m128i *)(input + 6 * stride)); + __m128i in7 = _mm_load_si128((const __m128i *)(input + 7 * stride)); + // Pre-condition input (shift by two) + in0 = _mm_slli_epi16(in0, 2); + in1 = _mm_slli_epi16(in1, 2); + in2 = _mm_slli_epi16(in2, 2); + in3 = _mm_slli_epi16(in3, 2); + in4 = _mm_slli_epi16(in4, 2); + in5 = _mm_slli_epi16(in5, 2); + in6 = _mm_slli_epi16(in6, 2); + in7 = _mm_slli_epi16(in7, 2); + + // We do two passes, first the columns, then the rows. The results of the + // first pass are transposed so that the same column code can be reused. The + // results of the second pass are also transposed so that the rows (processed + // as columns) are put back in row positions. + for (pass = 0; pass < 2; pass++) { + // To store results of each pass before the transpose. + __m128i res0, res1, res2, res3, res4, res5, res6, res7; + // Add/substract + const __m128i q0 = _mm_add_epi16(in0, in7); + const __m128i q1 = _mm_add_epi16(in1, in6); + const __m128i q2 = _mm_add_epi16(in2, in5); + const __m128i q3 = _mm_add_epi16(in3, in4); + const __m128i q4 = _mm_sub_epi16(in3, in4); + const __m128i q5 = _mm_sub_epi16(in2, in5); + const __m128i q6 = _mm_sub_epi16(in1, in6); + const __m128i q7 = _mm_sub_epi16(in0, in7); + // Work on first four results + { + // Add/substract + const __m128i r0 = _mm_add_epi16(q0, q3); + const __m128i r1 = _mm_add_epi16(q1, q2); + const __m128i r2 = _mm_sub_epi16(q1, q2); + const __m128i r3 = _mm_sub_epi16(q0, q3); + // Interleave to do the multiply by constants which gets us into 32bits + const __m128i t0 = _mm_unpacklo_epi16(r0, r1); + const __m128i t1 = _mm_unpackhi_epi16(r0, r1); + const __m128i t2 = _mm_unpacklo_epi16(r2, r3); + const __m128i t3 = _mm_unpackhi_epi16(r2, r3); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); + const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); + const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16); + const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); + const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08); + const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); + const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); + const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); + const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); + const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + // Combine + res0 = _mm_packs_epi32(w0, w1); + res4 = _mm_packs_epi32(w2, w3); + res2 = _mm_packs_epi32(w4, w5); + res6 = _mm_packs_epi32(w6, w7); + } + // Work on next four results + { + // Interleave to do the multiply by constants which gets us into 32bits + const __m128i d0 = _mm_unpacklo_epi16(q6, q5); + const __m128i d1 = _mm_unpackhi_epi16(q6, q5); + const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16); + const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16); + const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16); + const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16); + // dct_const_round_shift + const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING); + const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING); + const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING); + const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING); + const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS); + const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS); + const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS); + const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS); + // Combine + const __m128i r0 = _mm_packs_epi32(s0, s1); + const __m128i r1 = _mm_packs_epi32(s2, s3); + // Add/substract + const __m128i x0 = _mm_add_epi16(q4, r0); + const __m128i x1 = _mm_sub_epi16(q4, r0); + const __m128i x2 = _mm_sub_epi16(q7, r1); + const __m128i x3 = _mm_add_epi16(q7, r1); + // Interleave to do the multiply by constants which gets us into 32bits + const __m128i t0 = _mm_unpacklo_epi16(x0, x3); + const __m128i t1 = _mm_unpackhi_epi16(x0, x3); + const __m128i t2 = _mm_unpacklo_epi16(x1, x2); + const __m128i t3 = _mm_unpackhi_epi16(x1, x2); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04); + const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28); + const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28); + const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20); + const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20); + const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12); + const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); + const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); + const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); + const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + // Combine + res1 = _mm_packs_epi32(w0, w1); + res7 = _mm_packs_epi32(w2, w3); + res5 = _mm_packs_epi32(w4, w5); + res3 = _mm_packs_epi32(w6, w7); + } + // Transpose the 8x8. + { + // 00 01 02 03 04 05 06 07 + // 10 11 12 13 14 15 16 17 + // 20 21 22 23 24 25 26 27 + // 30 31 32 33 34 35 36 37 + // 40 41 42 43 44 45 46 47 + // 50 51 52 53 54 55 56 57 + // 60 61 62 63 64 65 66 67 + // 70 71 72 73 74 75 76 77 + const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1); + const __m128i tr0_1 = _mm_unpacklo_epi16(res2, res3); + const __m128i tr0_2 = _mm_unpackhi_epi16(res0, res1); + const __m128i tr0_3 = _mm_unpackhi_epi16(res2, res3); + const __m128i tr0_4 = _mm_unpacklo_epi16(res4, res5); + const __m128i tr0_5 = _mm_unpacklo_epi16(res6, res7); + const __m128i tr0_6 = _mm_unpackhi_epi16(res4, res5); + const __m128i tr0_7 = _mm_unpackhi_epi16(res6, res7); + // 00 10 01 11 02 12 03 13 + // 20 30 21 31 22 32 23 33 + // 04 14 05 15 06 16 07 17 + // 24 34 25 35 26 36 27 37 + // 40 50 41 51 42 52 43 53 + // 60 70 61 71 62 72 63 73 + // 54 54 55 55 56 56 57 57 + // 64 74 65 75 66 76 67 77 + const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); + const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); + const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); + const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); + const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); + const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); + const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); + const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); + // 00 10 20 30 01 11 21 31 + // 40 50 60 70 41 51 61 71 + // 02 12 22 32 03 13 23 33 + // 42 52 62 72 43 53 63 73 + // 04 14 24 34 05 15 21 36 + // 44 54 64 74 45 55 61 76 + // 06 16 26 36 07 17 27 37 + // 46 56 66 76 47 57 67 77 + in0 = _mm_unpacklo_epi64(tr1_0, tr1_4); + in1 = _mm_unpackhi_epi64(tr1_0, tr1_4); + in2 = _mm_unpacklo_epi64(tr1_2, tr1_6); + in3 = _mm_unpackhi_epi64(tr1_2, tr1_6); + in4 = _mm_unpacklo_epi64(tr1_1, tr1_5); + in5 = _mm_unpackhi_epi64(tr1_1, tr1_5); + in6 = _mm_unpacklo_epi64(tr1_3, tr1_7); + in7 = _mm_unpackhi_epi64(tr1_3, tr1_7); + // 00 10 20 30 40 50 60 70 + // 01 11 21 31 41 51 61 71 + // 02 12 22 32 42 52 62 72 + // 03 13 23 33 43 53 63 73 + // 04 14 24 34 44 54 64 74 + // 05 15 25 35 45 55 65 75 + // 06 16 26 36 46 56 66 76 + // 07 17 27 37 47 57 67 77 + } + } + // Post-condition output and store it + { + // Post-condition (division by two) + // division of two 16 bits signed numbers using shifts + // n / 2 = (n - (n >> 15)) >> 1 + const __m128i sign_in0 = _mm_srai_epi16(in0, 15); + const __m128i sign_in1 = _mm_srai_epi16(in1, 15); + const __m128i sign_in2 = _mm_srai_epi16(in2, 15); + const __m128i sign_in3 = _mm_srai_epi16(in3, 15); + const __m128i sign_in4 = _mm_srai_epi16(in4, 15); + const __m128i sign_in5 = _mm_srai_epi16(in5, 15); + const __m128i sign_in6 = _mm_srai_epi16(in6, 15); + const __m128i sign_in7 = _mm_srai_epi16(in7, 15); + in0 = _mm_sub_epi16(in0, sign_in0); + in1 = _mm_sub_epi16(in1, sign_in1); + in2 = _mm_sub_epi16(in2, sign_in2); + in3 = _mm_sub_epi16(in3, sign_in3); + in4 = _mm_sub_epi16(in4, sign_in4); + in5 = _mm_sub_epi16(in5, sign_in5); + in6 = _mm_sub_epi16(in6, sign_in6); + in7 = _mm_sub_epi16(in7, sign_in7); + in0 = _mm_srai_epi16(in0, 1); + in1 = _mm_srai_epi16(in1, 1); + in2 = _mm_srai_epi16(in2, 1); + in3 = _mm_srai_epi16(in3, 1); + in4 = _mm_srai_epi16(in4, 1); + in5 = _mm_srai_epi16(in5, 1); + in6 = _mm_srai_epi16(in6, 1); + in7 = _mm_srai_epi16(in7, 1); + // store results + _mm_store_si128((__m128i *)(output + 0 * 8), in0); + _mm_store_si128((__m128i *)(output + 1 * 8), in1); + _mm_store_si128((__m128i *)(output + 2 * 8), in2); + _mm_store_si128((__m128i *)(output + 3 * 8), in3); + _mm_store_si128((__m128i *)(output + 4 * 8), in4); + _mm_store_si128((__m128i *)(output + 5 * 8), in5); + _mm_store_si128((__m128i *)(output + 6 * 8), in6); + _mm_store_si128((__m128i *)(output + 7 * 8), in7); + } +} + +// load 8x8 array +static INLINE void load_buffer_8x8_avx2(const int16_t *input, __m128i *in, + int stride) { + in[0] = _mm_load_si128((const __m128i *)(input + 0 * stride)); + in[1] = _mm_load_si128((const __m128i *)(input + 1 * stride)); + in[2] = _mm_load_si128((const __m128i *)(input + 2 * stride)); + in[3] = _mm_load_si128((const __m128i *)(input + 3 * stride)); + in[4] = _mm_load_si128((const __m128i *)(input + 4 * stride)); + in[5] = _mm_load_si128((const __m128i *)(input + 5 * stride)); + in[6] = _mm_load_si128((const __m128i *)(input + 6 * stride)); + in[7] = _mm_load_si128((const __m128i *)(input + 7 * stride)); + + in[0] = _mm_slli_epi16(in[0], 2); + in[1] = _mm_slli_epi16(in[1], 2); + in[2] = _mm_slli_epi16(in[2], 2); + in[3] = _mm_slli_epi16(in[3], 2); + in[4] = _mm_slli_epi16(in[4], 2); + in[5] = _mm_slli_epi16(in[5], 2); + in[6] = _mm_slli_epi16(in[6], 2); + in[7] = _mm_slli_epi16(in[7], 2); +} + +// right shift and rounding +static INLINE void right_shift_8x8_avx2(__m128i *res, int const bit) { + const __m128i kOne = _mm_set1_epi16(1); + const int bit_m02 = bit - 2; + __m128i sign0 = _mm_srai_epi16(res[0], 15); + __m128i sign1 = _mm_srai_epi16(res[1], 15); + __m128i sign2 = _mm_srai_epi16(res[2], 15); + __m128i sign3 = _mm_srai_epi16(res[3], 15); + __m128i sign4 = _mm_srai_epi16(res[4], 15); + __m128i sign5 = _mm_srai_epi16(res[5], 15); + __m128i sign6 = _mm_srai_epi16(res[6], 15); + __m128i sign7 = _mm_srai_epi16(res[7], 15); + + if (bit_m02 >= 0) { + __m128i k_const_rounding = _mm_slli_epi16(kOne, bit_m02); + res[0] = _mm_add_epi16(res[0], k_const_rounding); + res[1] = _mm_add_epi16(res[1], k_const_rounding); + res[2] = _mm_add_epi16(res[2], k_const_rounding); + res[3] = _mm_add_epi16(res[3], k_const_rounding); + res[4] = _mm_add_epi16(res[4], k_const_rounding); + res[5] = _mm_add_epi16(res[5], k_const_rounding); + res[6] = _mm_add_epi16(res[6], k_const_rounding); + res[7] = _mm_add_epi16(res[7], k_const_rounding); + } + + res[0] = _mm_sub_epi16(res[0], sign0); + res[1] = _mm_sub_epi16(res[1], sign1); + res[2] = _mm_sub_epi16(res[2], sign2); + res[3] = _mm_sub_epi16(res[3], sign3); + res[4] = _mm_sub_epi16(res[4], sign4); + res[5] = _mm_sub_epi16(res[5], sign5); + res[6] = _mm_sub_epi16(res[6], sign6); + res[7] = _mm_sub_epi16(res[7], sign7); + + res[0] = _mm_srai_epi16(res[0], bit); + res[1] = _mm_srai_epi16(res[1], bit); + res[2] = _mm_srai_epi16(res[2], bit); + res[3] = _mm_srai_epi16(res[3], bit); + res[4] = _mm_srai_epi16(res[4], bit); + res[5] = _mm_srai_epi16(res[5], bit); + res[6] = _mm_srai_epi16(res[6], bit); + res[7] = _mm_srai_epi16(res[7], bit); +} + +// write 8x8 array +static INLINE void write_buffer_8x8_avx2(int16_t *output, __m128i *res, int stride) { + _mm_store_si128((__m128i *)(output + 0 * stride), res[0]); + _mm_store_si128((__m128i *)(output + 1 * stride), res[1]); + _mm_store_si128((__m128i *)(output + 2 * stride), res[2]); + _mm_store_si128((__m128i *)(output + 3 * stride), res[3]); + _mm_store_si128((__m128i *)(output + 4 * stride), res[4]); + _mm_store_si128((__m128i *)(output + 5 * stride), res[5]); + _mm_store_si128((__m128i *)(output + 6 * stride), res[6]); + _mm_store_si128((__m128i *)(output + 7 * stride), res[7]); +} + +// perform in-place transpose +static INLINE void array_transpose_8x8_avx2(__m128i *in, __m128i *res) { + const __m128i tr0_0 = _mm_unpacklo_epi16(in[0], in[1]); + const __m128i tr0_1 = _mm_unpacklo_epi16(in[2], in[3]); + const __m128i tr0_2 = _mm_unpackhi_epi16(in[0], in[1]); + const __m128i tr0_3 = _mm_unpackhi_epi16(in[2], in[3]); + const __m128i tr0_4 = _mm_unpacklo_epi16(in[4], in[5]); + const __m128i tr0_5 = _mm_unpacklo_epi16(in[6], in[7]); + const __m128i tr0_6 = _mm_unpackhi_epi16(in[4], in[5]); + const __m128i tr0_7 = _mm_unpackhi_epi16(in[6], in[7]); + // 00 10 01 11 02 12 03 13 + // 20 30 21 31 22 32 23 33 + // 04 14 05 15 06 16 07 17 + // 24 34 25 35 26 36 27 37 + // 40 50 41 51 42 52 43 53 + // 60 70 61 71 62 72 63 73 + // 44 54 45 55 46 56 47 57 + // 64 74 65 75 66 76 67 77 + const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); + const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_4, tr0_5); + const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); + const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_4, tr0_5); + const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_2, tr0_3); + const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); + const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_2, tr0_3); + const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); + // 00 10 20 30 01 11 21 31 + // 40 50 60 70 41 51 61 71 + // 02 12 22 32 03 13 23 33 + // 42 52 62 72 43 53 63 73 + // 04 14 24 34 05 15 25 35 + // 44 54 64 74 45 55 65 75 + // 06 16 26 36 07 17 27 37 + // 46 56 66 76 47 57 67 77 + res[0] = _mm_unpacklo_epi64(tr1_0, tr1_1); + res[1] = _mm_unpackhi_epi64(tr1_0, tr1_1); + res[2] = _mm_unpacklo_epi64(tr1_2, tr1_3); + res[3] = _mm_unpackhi_epi64(tr1_2, tr1_3); + res[4] = _mm_unpacklo_epi64(tr1_4, tr1_5); + res[5] = _mm_unpackhi_epi64(tr1_4, tr1_5); + res[6] = _mm_unpacklo_epi64(tr1_6, tr1_7); + res[7] = _mm_unpackhi_epi64(tr1_6, tr1_7); + // 00 10 20 30 40 50 60 70 + // 01 11 21 31 41 51 61 71 + // 02 12 22 32 42 52 62 72 + // 03 13 23 33 43 53 63 73 + // 04 14 24 34 44 54 64 74 + // 05 15 25 35 45 55 65 75 + // 06 16 26 36 46 56 66 76 + // 07 17 27 37 47 57 67 77 +} + +void fdct8_1d_avx2(__m128i *in) { + // constants + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); + const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); + const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); + const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); + const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); + const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + __m128i u0, u1, u2, u3, u4, u5, u6, u7; + __m128i v0, v1, v2, v3, v4, v5, v6, v7; + __m128i s0, s1, s2, s3, s4, s5, s6, s7; + + // stage 1 + s0 = _mm_add_epi16(in[0], in[7]); + s1 = _mm_add_epi16(in[1], in[6]); + s2 = _mm_add_epi16(in[2], in[5]); + s3 = _mm_add_epi16(in[3], in[4]); + s4 = _mm_sub_epi16(in[3], in[4]); + s5 = _mm_sub_epi16(in[2], in[5]); + s6 = _mm_sub_epi16(in[1], in[6]); + s7 = _mm_sub_epi16(in[0], in[7]); + + u0 = _mm_add_epi16(s0, s3); + u1 = _mm_add_epi16(s1, s2); + u2 = _mm_sub_epi16(s1, s2); + u3 = _mm_sub_epi16(s0, s3); + // interleave and perform butterfly multiplication/addition + v0 = _mm_unpacklo_epi16(u0, u1); + v1 = _mm_unpackhi_epi16(u0, u1); + v2 = _mm_unpacklo_epi16(u2, u3); + v3 = _mm_unpackhi_epi16(u2, u3); + + u0 = _mm_madd_epi16(v0, k__cospi_p16_p16); + u1 = _mm_madd_epi16(v1, k__cospi_p16_p16); + u2 = _mm_madd_epi16(v0, k__cospi_p16_m16); + u3 = _mm_madd_epi16(v1, k__cospi_p16_m16); + u4 = _mm_madd_epi16(v2, k__cospi_p24_p08); + u5 = _mm_madd_epi16(v3, k__cospi_p24_p08); + u6 = _mm_madd_epi16(v2, k__cospi_m08_p24); + u7 = _mm_madd_epi16(v3, k__cospi_m08_p24); + + // shift and rounding + v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); + v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); + v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); + v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); + + u0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + u1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + u2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + u3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + u4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + u5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + u6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + u7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u0, u1); + in[2] = _mm_packs_epi32(u4, u5); + in[4] = _mm_packs_epi32(u2, u3); + in[6] = _mm_packs_epi32(u6, u7); + + // stage 2 + // interleave and perform butterfly multiplication/addition + u0 = _mm_unpacklo_epi16(s6, s5); + u1 = _mm_unpackhi_epi16(s6, s5); + v0 = _mm_madd_epi16(u0, k__cospi_p16_m16); + v1 = _mm_madd_epi16(u1, k__cospi_p16_m16); + v2 = _mm_madd_epi16(u0, k__cospi_p16_p16); + v3 = _mm_madd_epi16(u1, k__cospi_p16_p16); + + // shift and rounding + u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING); + u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING); + u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING); + u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING); + + v0 = _mm_srai_epi32(u0, DCT_CONST_BITS); + v1 = _mm_srai_epi32(u1, DCT_CONST_BITS); + v2 = _mm_srai_epi32(u2, DCT_CONST_BITS); + v3 = _mm_srai_epi32(u3, DCT_CONST_BITS); + + u0 = _mm_packs_epi32(v0, v1); + u1 = _mm_packs_epi32(v2, v3); + + // stage 3 + s0 = _mm_add_epi16(s4, u0); + s1 = _mm_sub_epi16(s4, u0); + s2 = _mm_sub_epi16(s7, u1); + s3 = _mm_add_epi16(s7, u1); + + // stage 4 + u0 = _mm_unpacklo_epi16(s0, s3); + u1 = _mm_unpackhi_epi16(s0, s3); + u2 = _mm_unpacklo_epi16(s1, s2); + u3 = _mm_unpackhi_epi16(s1, s2); + + v0 = _mm_madd_epi16(u0, k__cospi_p28_p04); + v1 = _mm_madd_epi16(u1, k__cospi_p28_p04); + v2 = _mm_madd_epi16(u2, k__cospi_p12_p20); + v3 = _mm_madd_epi16(u3, k__cospi_p12_p20); + v4 = _mm_madd_epi16(u2, k__cospi_m20_p12); + v5 = _mm_madd_epi16(u3, k__cospi_m20_p12); + v6 = _mm_madd_epi16(u0, k__cospi_m04_p28); + v7 = _mm_madd_epi16(u1, k__cospi_m04_p28); + + // shift and rounding + u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING); + u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING); + u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING); + u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING); + u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING); + u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING); + u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING); + u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING); + + v0 = _mm_srai_epi32(u0, DCT_CONST_BITS); + v1 = _mm_srai_epi32(u1, DCT_CONST_BITS); + v2 = _mm_srai_epi32(u2, DCT_CONST_BITS); + v3 = _mm_srai_epi32(u3, DCT_CONST_BITS); + v4 = _mm_srai_epi32(u4, DCT_CONST_BITS); + v5 = _mm_srai_epi32(u5, DCT_CONST_BITS); + v6 = _mm_srai_epi32(u6, DCT_CONST_BITS); + v7 = _mm_srai_epi32(u7, DCT_CONST_BITS); + + in[1] = _mm_packs_epi32(v0, v1); + in[3] = _mm_packs_epi32(v4, v5); + in[5] = _mm_packs_epi32(v2, v3); + in[7] = _mm_packs_epi32(v6, v7); + + // transpose + array_transpose_8x8_avx2(in, in); +} + +void fadst8_1d_avx2(__m128i *in) { + // Constants + const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64); + const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64); + const __m128i k__cospi_p10_p22 = pair_set_epi16(cospi_10_64, cospi_22_64); + const __m128i k__cospi_p22_m10 = pair_set_epi16(cospi_22_64, -cospi_10_64); + const __m128i k__cospi_p18_p14 = pair_set_epi16(cospi_18_64, cospi_14_64); + const __m128i k__cospi_p14_m18 = pair_set_epi16(cospi_14_64, -cospi_18_64); + const __m128i k__cospi_p26_p06 = pair_set_epi16(cospi_26_64, cospi_6_64); + const __m128i k__cospi_p06_m26 = pair_set_epi16(cospi_6_64, -cospi_26_64); + const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64); + const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64); + const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__const_0 = _mm_set1_epi16(0); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + + __m128i u0, u1, u2, u3, u4, u5, u6, u7, u8, u9, u10, u11, u12, u13, u14, u15; + __m128i v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15; + __m128i w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15; + __m128i s0, s1, s2, s3, s4, s5, s6, s7; + __m128i in0, in1, in2, in3, in4, in5, in6, in7; + + // properly aligned for butterfly input + in0 = in[7]; + in1 = in[0]; + in2 = in[5]; + in3 = in[2]; + in4 = in[3]; + in5 = in[4]; + in6 = in[1]; + in7 = in[6]; + + // column transformation + // stage 1 + // interleave and multiply/add into 32-bit integer + s0 = _mm_unpacklo_epi16(in0, in1); + s1 = _mm_unpackhi_epi16(in0, in1); + s2 = _mm_unpacklo_epi16(in2, in3); + s3 = _mm_unpackhi_epi16(in2, in3); + s4 = _mm_unpacklo_epi16(in4, in5); + s5 = _mm_unpackhi_epi16(in4, in5); + s6 = _mm_unpacklo_epi16(in6, in7); + s7 = _mm_unpackhi_epi16(in6, in7); + + u0 = _mm_madd_epi16(s0, k__cospi_p02_p30); + u1 = _mm_madd_epi16(s1, k__cospi_p02_p30); + u2 = _mm_madd_epi16(s0, k__cospi_p30_m02); + u3 = _mm_madd_epi16(s1, k__cospi_p30_m02); + u4 = _mm_madd_epi16(s2, k__cospi_p10_p22); + u5 = _mm_madd_epi16(s3, k__cospi_p10_p22); + u6 = _mm_madd_epi16(s2, k__cospi_p22_m10); + u7 = _mm_madd_epi16(s3, k__cospi_p22_m10); + u8 = _mm_madd_epi16(s4, k__cospi_p18_p14); + u9 = _mm_madd_epi16(s5, k__cospi_p18_p14); + u10 = _mm_madd_epi16(s4, k__cospi_p14_m18); + u11 = _mm_madd_epi16(s5, k__cospi_p14_m18); + u12 = _mm_madd_epi16(s6, k__cospi_p26_p06); + u13 = _mm_madd_epi16(s7, k__cospi_p26_p06); + u14 = _mm_madd_epi16(s6, k__cospi_p06_m26); + u15 = _mm_madd_epi16(s7, k__cospi_p06_m26); + + // addition + w0 = _mm_add_epi32(u0, u8); + w1 = _mm_add_epi32(u1, u9); + w2 = _mm_add_epi32(u2, u10); + w3 = _mm_add_epi32(u3, u11); + w4 = _mm_add_epi32(u4, u12); + w5 = _mm_add_epi32(u5, u13); + w6 = _mm_add_epi32(u6, u14); + w7 = _mm_add_epi32(u7, u15); + w8 = _mm_sub_epi32(u0, u8); + w9 = _mm_sub_epi32(u1, u9); + w10 = _mm_sub_epi32(u2, u10); + w11 = _mm_sub_epi32(u3, u11); + w12 = _mm_sub_epi32(u4, u12); + w13 = _mm_sub_epi32(u5, u13); + w14 = _mm_sub_epi32(u6, u14); + w15 = _mm_sub_epi32(u7, u15); + + // shift and rounding + v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING); + v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING); + v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING); + v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING); + v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING); + v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING); + v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING); + v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING); + v8 = _mm_add_epi32(w8, k__DCT_CONST_ROUNDING); + v9 = _mm_add_epi32(w9, k__DCT_CONST_ROUNDING); + v10 = _mm_add_epi32(w10, k__DCT_CONST_ROUNDING); + v11 = _mm_add_epi32(w11, k__DCT_CONST_ROUNDING); + v12 = _mm_add_epi32(w12, k__DCT_CONST_ROUNDING); + v13 = _mm_add_epi32(w13, k__DCT_CONST_ROUNDING); + v14 = _mm_add_epi32(w14, k__DCT_CONST_ROUNDING); + v15 = _mm_add_epi32(w15, k__DCT_CONST_ROUNDING); + + u0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + u1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + u2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + u3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + u4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + u5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + u6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + u7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + u8 = _mm_srai_epi32(v8, DCT_CONST_BITS); + u9 = _mm_srai_epi32(v9, DCT_CONST_BITS); + u10 = _mm_srai_epi32(v10, DCT_CONST_BITS); + u11 = _mm_srai_epi32(v11, DCT_CONST_BITS); + u12 = _mm_srai_epi32(v12, DCT_CONST_BITS); + u13 = _mm_srai_epi32(v13, DCT_CONST_BITS); + u14 = _mm_srai_epi32(v14, DCT_CONST_BITS); + u15 = _mm_srai_epi32(v15, DCT_CONST_BITS); + + // back to 16-bit and pack 8 integers into __m128i + in[0] = _mm_packs_epi32(u0, u1); + in[1] = _mm_packs_epi32(u2, u3); + in[2] = _mm_packs_epi32(u4, u5); + in[3] = _mm_packs_epi32(u6, u7); + in[4] = _mm_packs_epi32(u8, u9); + in[5] = _mm_packs_epi32(u10, u11); + in[6] = _mm_packs_epi32(u12, u13); + in[7] = _mm_packs_epi32(u14, u15); + + // stage 2 + s0 = _mm_add_epi16(in[0], in[2]); + s1 = _mm_add_epi16(in[1], in[3]); + s2 = _mm_sub_epi16(in[0], in[2]); + s3 = _mm_sub_epi16(in[1], in[3]); + u0 = _mm_unpacklo_epi16(in[4], in[5]); + u1 = _mm_unpackhi_epi16(in[4], in[5]); + u2 = _mm_unpacklo_epi16(in[6], in[7]); + u3 = _mm_unpackhi_epi16(in[6], in[7]); + + v0 = _mm_madd_epi16(u0, k__cospi_p08_p24); + v1 = _mm_madd_epi16(u1, k__cospi_p08_p24); + v2 = _mm_madd_epi16(u0, k__cospi_p24_m08); + v3 = _mm_madd_epi16(u1, k__cospi_p24_m08); + v4 = _mm_madd_epi16(u2, k__cospi_m24_p08); + v5 = _mm_madd_epi16(u3, k__cospi_m24_p08); + v6 = _mm_madd_epi16(u2, k__cospi_p08_p24); + v7 = _mm_madd_epi16(u3, k__cospi_p08_p24); + + w0 = _mm_add_epi32(v0, v4); + w1 = _mm_add_epi32(v1, v5); + w2 = _mm_add_epi32(v2, v6); + w3 = _mm_add_epi32(v3, v7); + w4 = _mm_sub_epi32(v0, v4); + w5 = _mm_sub_epi32(v1, v5); + w6 = _mm_sub_epi32(v2, v6); + w7 = _mm_sub_epi32(v3, v7); + + v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING); + v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING); + v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING); + v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING); + v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING); + v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING); + v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING); + v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING); + + u0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + u1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + u2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + u3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + u4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + u5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + u6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + u7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + + // back to 16-bit intergers + s4 = _mm_packs_epi32(u0, u1); + s5 = _mm_packs_epi32(u2, u3); + s6 = _mm_packs_epi32(u4, u5); + s7 = _mm_packs_epi32(u6, u7); + + // stage 3 + u0 = _mm_unpacklo_epi16(s2, s3); + u1 = _mm_unpackhi_epi16(s2, s3); + u2 = _mm_unpacklo_epi16(s6, s7); + u3 = _mm_unpackhi_epi16(s6, s7); + + v0 = _mm_madd_epi16(u0, k__cospi_p16_p16); + v1 = _mm_madd_epi16(u1, k__cospi_p16_p16); + v2 = _mm_madd_epi16(u0, k__cospi_p16_m16); + v3 = _mm_madd_epi16(u1, k__cospi_p16_m16); + v4 = _mm_madd_epi16(u2, k__cospi_p16_p16); + v5 = _mm_madd_epi16(u3, k__cospi_p16_p16); + v6 = _mm_madd_epi16(u2, k__cospi_p16_m16); + v7 = _mm_madd_epi16(u3, k__cospi_p16_m16); + + u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING); + u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING); + u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING); + u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING); + u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING); + u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING); + u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING); + u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING); + + v0 = _mm_srai_epi32(u0, DCT_CONST_BITS); + v1 = _mm_srai_epi32(u1, DCT_CONST_BITS); + v2 = _mm_srai_epi32(u2, DCT_CONST_BITS); + v3 = _mm_srai_epi32(u3, DCT_CONST_BITS); + v4 = _mm_srai_epi32(u4, DCT_CONST_BITS); + v5 = _mm_srai_epi32(u5, DCT_CONST_BITS); + v6 = _mm_srai_epi32(u6, DCT_CONST_BITS); + v7 = _mm_srai_epi32(u7, DCT_CONST_BITS); + + s2 = _mm_packs_epi32(v0, v1); + s3 = _mm_packs_epi32(v2, v3); + s6 = _mm_packs_epi32(v4, v5); + s7 = _mm_packs_epi32(v6, v7); + + // FIXME(jingning): do subtract using bit inversion? + in[0] = s0; + in[1] = _mm_sub_epi16(k__const_0, s4); + in[2] = s6; + in[3] = _mm_sub_epi16(k__const_0, s2); + in[4] = s3; + in[5] = _mm_sub_epi16(k__const_0, s7); + in[6] = s5; + in[7] = _mm_sub_epi16(k__const_0, s1); + + // transpose + array_transpose_8x8_avx2(in, in); +} + +void vp9_short_fht8x8_avx2(const int16_t *input, int16_t *output, + int stride, int tx_type) { + __m128i in[8]; + load_buffer_8x8_avx2(input, in, stride); + switch (tx_type) { + case 0: // DCT_DCT + fdct8_1d_avx2(in); + fdct8_1d_avx2(in); + break; + case 1: // ADST_DCT + fadst8_1d_avx2(in); + fdct8_1d_avx2(in); + break; + case 2: // DCT_ADST + fdct8_1d_avx2(in); + fadst8_1d_avx2(in); + break; + case 3: // ADST_ADST + fadst8_1d_avx2(in); + fadst8_1d_avx2(in); + break; + default: + assert(0); + break; + } + right_shift_8x8_avx2(in, 1); + write_buffer_8x8_avx2(output, in, 8); +} + +void vp9_fdct16x16_avx2(const int16_t *input, int16_t *output, int stride) { + // The 2D transform is done with two passes which are actually pretty + // similar. In the first one, we transform the columns and transpose + // the results. In the second one, we transform the rows. To achieve that, + // as the first pass results are transposed, we tranpose the columns (that + // is the transposed rows) and transpose the results (so that it goes back + // in normal/row positions). + int pass; + // We need an intermediate buffer between passes. + DECLARE_ALIGNED_ARRAY(16, int16_t, intermediate, 256); + const int16_t *in = input; + int16_t *out = intermediate; + // Constants + // When we use them, in one case, they are all the same. In all others + // it's a pair of them that we need to repeat four times. This is done + // by constructing the 32 bit constant corresponding to that pair. + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); + const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64); + const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); + const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); + const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); + const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); + const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); + const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64); + const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64); + const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64); + const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64); + const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64); + const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64); + const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64); + const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + const __m128i kOne = _mm_set1_epi16(1); + // Do the two transform/transpose passes + for (pass = 0; pass < 2; ++pass) { + // We process eight columns (transposed rows in second pass) at a time. + int column_start; + for (column_start = 0; column_start < 16; column_start += 8) { + __m128i in00, in01, in02, in03, in04, in05, in06, in07; + __m128i in08, in09, in10, in11, in12, in13, in14, in15; + __m128i input0, input1, input2, input3, input4, input5, input6, input7; + __m128i step1_0, step1_1, step1_2, step1_3; + __m128i step1_4, step1_5, step1_6, step1_7; + __m128i step2_1, step2_2, step2_3, step2_4, step2_5, step2_6; + __m128i step3_0, step3_1, step3_2, step3_3; + __m128i step3_4, step3_5, step3_6, step3_7; + __m128i res00, res01, res02, res03, res04, res05, res06, res07; + __m128i res08, res09, res10, res11, res12, res13, res14, res15; + // Load and pre-condition input. + if (0 == pass) { + in00 = _mm_load_si128((const __m128i *)(in + 0 * stride)); + in01 = _mm_load_si128((const __m128i *)(in + 1 * stride)); + in02 = _mm_load_si128((const __m128i *)(in + 2 * stride)); + in03 = _mm_load_si128((const __m128i *)(in + 3 * stride)); + in04 = _mm_load_si128((const __m128i *)(in + 4 * stride)); + in05 = _mm_load_si128((const __m128i *)(in + 5 * stride)); + in06 = _mm_load_si128((const __m128i *)(in + 6 * stride)); + in07 = _mm_load_si128((const __m128i *)(in + 7 * stride)); + in08 = _mm_load_si128((const __m128i *)(in + 8 * stride)); + in09 = _mm_load_si128((const __m128i *)(in + 9 * stride)); + in10 = _mm_load_si128((const __m128i *)(in + 10 * stride)); + in11 = _mm_load_si128((const __m128i *)(in + 11 * stride)); + in12 = _mm_load_si128((const __m128i *)(in + 12 * stride)); + in13 = _mm_load_si128((const __m128i *)(in + 13 * stride)); + in14 = _mm_load_si128((const __m128i *)(in + 14 * stride)); + in15 = _mm_load_si128((const __m128i *)(in + 15 * stride)); + // x = x << 2 + in00 = _mm_slli_epi16(in00, 2); + in01 = _mm_slli_epi16(in01, 2); + in02 = _mm_slli_epi16(in02, 2); + in03 = _mm_slli_epi16(in03, 2); + in04 = _mm_slli_epi16(in04, 2); + in05 = _mm_slli_epi16(in05, 2); + in06 = _mm_slli_epi16(in06, 2); + in07 = _mm_slli_epi16(in07, 2); + in08 = _mm_slli_epi16(in08, 2); + in09 = _mm_slli_epi16(in09, 2); + in10 = _mm_slli_epi16(in10, 2); + in11 = _mm_slli_epi16(in11, 2); + in12 = _mm_slli_epi16(in12, 2); + in13 = _mm_slli_epi16(in13, 2); + in14 = _mm_slli_epi16(in14, 2); + in15 = _mm_slli_epi16(in15, 2); + } else { + in00 = _mm_load_si128((const __m128i *)(in + 0 * 16)); + in01 = _mm_load_si128((const __m128i *)(in + 1 * 16)); + in02 = _mm_load_si128((const __m128i *)(in + 2 * 16)); + in03 = _mm_load_si128((const __m128i *)(in + 3 * 16)); + in04 = _mm_load_si128((const __m128i *)(in + 4 * 16)); + in05 = _mm_load_si128((const __m128i *)(in + 5 * 16)); + in06 = _mm_load_si128((const __m128i *)(in + 6 * 16)); + in07 = _mm_load_si128((const __m128i *)(in + 7 * 16)); + in08 = _mm_load_si128((const __m128i *)(in + 8 * 16)); + in09 = _mm_load_si128((const __m128i *)(in + 9 * 16)); + in10 = _mm_load_si128((const __m128i *)(in + 10 * 16)); + in11 = _mm_load_si128((const __m128i *)(in + 11 * 16)); + in12 = _mm_load_si128((const __m128i *)(in + 12 * 16)); + in13 = _mm_load_si128((const __m128i *)(in + 13 * 16)); + in14 = _mm_load_si128((const __m128i *)(in + 14 * 16)); + in15 = _mm_load_si128((const __m128i *)(in + 15 * 16)); + // x = (x + 1) >> 2 + in00 = _mm_add_epi16(in00, kOne); + in01 = _mm_add_epi16(in01, kOne); + in02 = _mm_add_epi16(in02, kOne); + in03 = _mm_add_epi16(in03, kOne); + in04 = _mm_add_epi16(in04, kOne); + in05 = _mm_add_epi16(in05, kOne); + in06 = _mm_add_epi16(in06, kOne); + in07 = _mm_add_epi16(in07, kOne); + in08 = _mm_add_epi16(in08, kOne); + in09 = _mm_add_epi16(in09, kOne); + in10 = _mm_add_epi16(in10, kOne); + in11 = _mm_add_epi16(in11, kOne); + in12 = _mm_add_epi16(in12, kOne); + in13 = _mm_add_epi16(in13, kOne); + in14 = _mm_add_epi16(in14, kOne); + in15 = _mm_add_epi16(in15, kOne); + in00 = _mm_srai_epi16(in00, 2); + in01 = _mm_srai_epi16(in01, 2); + in02 = _mm_srai_epi16(in02, 2); + in03 = _mm_srai_epi16(in03, 2); + in04 = _mm_srai_epi16(in04, 2); + in05 = _mm_srai_epi16(in05, 2); + in06 = _mm_srai_epi16(in06, 2); + in07 = _mm_srai_epi16(in07, 2); + in08 = _mm_srai_epi16(in08, 2); + in09 = _mm_srai_epi16(in09, 2); + in10 = _mm_srai_epi16(in10, 2); + in11 = _mm_srai_epi16(in11, 2); + in12 = _mm_srai_epi16(in12, 2); + in13 = _mm_srai_epi16(in13, 2); + in14 = _mm_srai_epi16(in14, 2); + in15 = _mm_srai_epi16(in15, 2); + } + in += 8; + // Calculate input for the first 8 results. + { + input0 = _mm_add_epi16(in00, in15); + input1 = _mm_add_epi16(in01, in14); + input2 = _mm_add_epi16(in02, in13); + input3 = _mm_add_epi16(in03, in12); + input4 = _mm_add_epi16(in04, in11); + input5 = _mm_add_epi16(in05, in10); + input6 = _mm_add_epi16(in06, in09); + input7 = _mm_add_epi16(in07, in08); + } + // Calculate input for the next 8 results. + { + step1_0 = _mm_sub_epi16(in07, in08); + step1_1 = _mm_sub_epi16(in06, in09); + step1_2 = _mm_sub_epi16(in05, in10); + step1_3 = _mm_sub_epi16(in04, in11); + step1_4 = _mm_sub_epi16(in03, in12); + step1_5 = _mm_sub_epi16(in02, in13); + step1_6 = _mm_sub_epi16(in01, in14); + step1_7 = _mm_sub_epi16(in00, in15); + } + // Work on the first eight values; fdct8_1d(input, even_results); + { + // Add/substract + const __m128i q0 = _mm_add_epi16(input0, input7); + const __m128i q1 = _mm_add_epi16(input1, input6); + const __m128i q2 = _mm_add_epi16(input2, input5); + const __m128i q3 = _mm_add_epi16(input3, input4); + const __m128i q4 = _mm_sub_epi16(input3, input4); + const __m128i q5 = _mm_sub_epi16(input2, input5); + const __m128i q6 = _mm_sub_epi16(input1, input6); + const __m128i q7 = _mm_sub_epi16(input0, input7); + // Work on first four results + { + // Add/substract + const __m128i r0 = _mm_add_epi16(q0, q3); + const __m128i r1 = _mm_add_epi16(q1, q2); + const __m128i r2 = _mm_sub_epi16(q1, q2); + const __m128i r3 = _mm_sub_epi16(q0, q3); + // Interleave to do the multiply by constants which gets us + // into 32 bits. + const __m128i t0 = _mm_unpacklo_epi16(r0, r1); + const __m128i t1 = _mm_unpackhi_epi16(r0, r1); + const __m128i t2 = _mm_unpacklo_epi16(r2, r3); + const __m128i t3 = _mm_unpackhi_epi16(r2, r3); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); + const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); + const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16); + const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); + const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08); + const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); + const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); + const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); + const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); + const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + // Combine + res00 = _mm_packs_epi32(w0, w1); + res08 = _mm_packs_epi32(w2, w3); + res04 = _mm_packs_epi32(w4, w5); + res12 = _mm_packs_epi32(w6, w7); + } + // Work on next four results + { + // Interleave to do the multiply by constants which gets us + // into 32 bits. + const __m128i d0 = _mm_unpacklo_epi16(q6, q5); + const __m128i d1 = _mm_unpackhi_epi16(q6, q5); + const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16); + const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16); + const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16); + const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16); + // dct_const_round_shift + const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING); + const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING); + const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING); + const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING); + const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS); + const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS); + const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS); + const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS); + // Combine + const __m128i r0 = _mm_packs_epi32(s0, s1); + const __m128i r1 = _mm_packs_epi32(s2, s3); + // Add/substract + const __m128i x0 = _mm_add_epi16(q4, r0); + const __m128i x1 = _mm_sub_epi16(q4, r0); + const __m128i x2 = _mm_sub_epi16(q7, r1); + const __m128i x3 = _mm_add_epi16(q7, r1); + // Interleave to do the multiply by constants which gets us + // into 32 bits. + const __m128i t0 = _mm_unpacklo_epi16(x0, x3); + const __m128i t1 = _mm_unpackhi_epi16(x0, x3); + const __m128i t2 = _mm_unpacklo_epi16(x1, x2); + const __m128i t3 = _mm_unpackhi_epi16(x1, x2); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04); + const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28); + const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28); + const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20); + const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20); + const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12); + const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); + const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); + const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); + const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); + const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); + const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); + const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); + // Combine + res02 = _mm_packs_epi32(w0, w1); + res14 = _mm_packs_epi32(w2, w3); + res10 = _mm_packs_epi32(w4, w5); + res06 = _mm_packs_epi32(w6, w7); + } + } + // Work on the next eight values; step1 -> odd_results + { + // step 2 + { + const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2); + const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2); + const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3); + const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_m16); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_m16); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p16_m16); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p16_m16); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + step2_2 = _mm_packs_epi32(w0, w1); + step2_3 = _mm_packs_epi32(w2, w3); + } + { + const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2); + const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2); + const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3); + const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p16_p16); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p16_p16); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + step2_5 = _mm_packs_epi32(w0, w1); + step2_4 = _mm_packs_epi32(w2, w3); + } + // step 3 + { + step3_0 = _mm_add_epi16(step1_0, step2_3); + step3_1 = _mm_add_epi16(step1_1, step2_2); + step3_2 = _mm_sub_epi16(step1_1, step2_2); + step3_3 = _mm_sub_epi16(step1_0, step2_3); + step3_4 = _mm_sub_epi16(step1_7, step2_4); + step3_5 = _mm_sub_epi16(step1_6, step2_5); + step3_6 = _mm_add_epi16(step1_6, step2_5); + step3_7 = _mm_add_epi16(step1_7, step2_4); + } + // step 4 + { + const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6); + const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6); + const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5); + const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m08_p24); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m08_p24); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m24_m08); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m24_m08); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + step2_1 = _mm_packs_epi32(w0, w1); + step2_2 = _mm_packs_epi32(w2, w3); + } + { + const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6); + const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6); + const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5); + const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p24_p08); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p24_p08); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m08_p24); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m08_p24); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + step2_6 = _mm_packs_epi32(w0, w1); + step2_5 = _mm_packs_epi32(w2, w3); + } + // step 5 + { + step1_0 = _mm_add_epi16(step3_0, step2_1); + step1_1 = _mm_sub_epi16(step3_0, step2_1); + step1_2 = _mm_sub_epi16(step3_3, step2_2); + step1_3 = _mm_add_epi16(step3_3, step2_2); + step1_4 = _mm_add_epi16(step3_4, step2_5); + step1_5 = _mm_sub_epi16(step3_4, step2_5); + step1_6 = _mm_sub_epi16(step3_7, step2_6); + step1_7 = _mm_add_epi16(step3_7, step2_6); + } + // step 6 + { + const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7); + const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7); + const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6); + const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p30_p02); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p30_p02); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p14_p18); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p14_p18); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + res01 = _mm_packs_epi32(w0, w1); + res09 = _mm_packs_epi32(w2, w3); + } + { + const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5); + const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5); + const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4); + const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p22_p10); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p22_p10); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p06_p26); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p06_p26); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + res05 = _mm_packs_epi32(w0, w1); + res13 = _mm_packs_epi32(w2, w3); + } + { + const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5); + const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5); + const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4); + const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m10_p22); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m10_p22); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m26_p06); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m26_p06); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + res11 = _mm_packs_epi32(w0, w1); + res03 = _mm_packs_epi32(w2, w3); + } + { + const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7); + const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7); + const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6); + const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6); + const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m02_p30); + const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m02_p30); + const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m18_p14); + const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m18_p14); + // dct_const_round_shift + const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); + const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); + const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); + const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); + const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); + const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); + const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); + const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); + // Combine + res15 = _mm_packs_epi32(w0, w1); + res07 = _mm_packs_epi32(w2, w3); + } + } + // Transpose the results, do it as two 8x8 transposes. + { + // 00 01 02 03 04 05 06 07 + // 10 11 12 13 14 15 16 17 + // 20 21 22 23 24 25 26 27 + // 30 31 32 33 34 35 36 37 + // 40 41 42 43 44 45 46 47 + // 50 51 52 53 54 55 56 57 + // 60 61 62 63 64 65 66 67 + // 70 71 72 73 74 75 76 77 + const __m128i tr0_0 = _mm_unpacklo_epi16(res00, res01); + const __m128i tr0_1 = _mm_unpacklo_epi16(res02, res03); + const __m128i tr0_2 = _mm_unpackhi_epi16(res00, res01); + const __m128i tr0_3 = _mm_unpackhi_epi16(res02, res03); + const __m128i tr0_4 = _mm_unpacklo_epi16(res04, res05); + const __m128i tr0_5 = _mm_unpacklo_epi16(res06, res07); + const __m128i tr0_6 = _mm_unpackhi_epi16(res04, res05); + const __m128i tr0_7 = _mm_unpackhi_epi16(res06, res07); + // 00 10 01 11 02 12 03 13 + // 20 30 21 31 22 32 23 33 + // 04 14 05 15 06 16 07 17 + // 24 34 25 35 26 36 27 37 + // 40 50 41 51 42 52 43 53 + // 60 70 61 71 62 72 63 73 + // 54 54 55 55 56 56 57 57 + // 64 74 65 75 66 76 67 77 + const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); + const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); + const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); + const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); + const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); + const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); + const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); + const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); + // 00 10 20 30 01 11 21 31 + // 40 50 60 70 41 51 61 71 + // 02 12 22 32 03 13 23 33 + // 42 52 62 72 43 53 63 73 + // 04 14 24 34 05 15 21 36 + // 44 54 64 74 45 55 61 76 + // 06 16 26 36 07 17 27 37 + // 46 56 66 76 47 57 67 77 + const __m128i tr2_0 = _mm_unpacklo_epi64(tr1_0, tr1_4); + const __m128i tr2_1 = _mm_unpackhi_epi64(tr1_0, tr1_4); + const __m128i tr2_2 = _mm_unpacklo_epi64(tr1_2, tr1_6); + const __m128i tr2_3 = _mm_unpackhi_epi64(tr1_2, tr1_6); + const __m128i tr2_4 = _mm_unpacklo_epi64(tr1_1, tr1_5); + const __m128i tr2_5 = _mm_unpackhi_epi64(tr1_1, tr1_5); + const __m128i tr2_6 = _mm_unpacklo_epi64(tr1_3, tr1_7); + const __m128i tr2_7 = _mm_unpackhi_epi64(tr1_3, tr1_7); + // 00 10 20 30 40 50 60 70 + // 01 11 21 31 41 51 61 71 + // 02 12 22 32 42 52 62 72 + // 03 13 23 33 43 53 63 73 + // 04 14 24 34 44 54 64 74 + // 05 15 25 35 45 55 65 75 + // 06 16 26 36 46 56 66 76 + // 07 17 27 37 47 57 67 77 + _mm_storeu_si128((__m128i *)(out + 0 * 16), tr2_0); + _mm_storeu_si128((__m128i *)(out + 1 * 16), tr2_1); + _mm_storeu_si128((__m128i *)(out + 2 * 16), tr2_2); + _mm_storeu_si128((__m128i *)(out + 3 * 16), tr2_3); + _mm_storeu_si128((__m128i *)(out + 4 * 16), tr2_4); + _mm_storeu_si128((__m128i *)(out + 5 * 16), tr2_5); + _mm_storeu_si128((__m128i *)(out + 6 * 16), tr2_6); + _mm_storeu_si128((__m128i *)(out + 7 * 16), tr2_7); + } + { + // 00 01 02 03 04 05 06 07 + // 10 11 12 13 14 15 16 17 + // 20 21 22 23 24 25 26 27 + // 30 31 32 33 34 35 36 37 + // 40 41 42 43 44 45 46 47 + // 50 51 52 53 54 55 56 57 + // 60 61 62 63 64 65 66 67 + // 70 71 72 73 74 75 76 77 + const __m128i tr0_0 = _mm_unpacklo_epi16(res08, res09); + const __m128i tr0_1 = _mm_unpacklo_epi16(res10, res11); + const __m128i tr0_2 = _mm_unpackhi_epi16(res08, res09); + const __m128i tr0_3 = _mm_unpackhi_epi16(res10, res11); + const __m128i tr0_4 = _mm_unpacklo_epi16(res12, res13); + const __m128i tr0_5 = _mm_unpacklo_epi16(res14, res15); + const __m128i tr0_6 = _mm_unpackhi_epi16(res12, res13); + const __m128i tr0_7 = _mm_unpackhi_epi16(res14, res15); + // 00 10 01 11 02 12 03 13 + // 20 30 21 31 22 32 23 33 + // 04 14 05 15 06 16 07 17 + // 24 34 25 35 26 36 27 37 + // 40 50 41 51 42 52 43 53 + // 60 70 61 71 62 72 63 73 + // 54 54 55 55 56 56 57 57 + // 64 74 65 75 66 76 67 77 + const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); + const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); + const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); + const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); + const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); + const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); + const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); + const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); + // 00 10 20 30 01 11 21 31 + // 40 50 60 70 41 51 61 71 + // 02 12 22 32 03 13 23 33 + // 42 52 62 72 43 53 63 73 + // 04 14 24 34 05 15 21 36 + // 44 54 64 74 45 55 61 76 + // 06 16 26 36 07 17 27 37 + // 46 56 66 76 47 57 67 77 + const __m128i tr2_0 = _mm_unpacklo_epi64(tr1_0, tr1_4); + const __m128i tr2_1 = _mm_unpackhi_epi64(tr1_0, tr1_4); + const __m128i tr2_2 = _mm_unpacklo_epi64(tr1_2, tr1_6); + const __m128i tr2_3 = _mm_unpackhi_epi64(tr1_2, tr1_6); + const __m128i tr2_4 = _mm_unpacklo_epi64(tr1_1, tr1_5); + const __m128i tr2_5 = _mm_unpackhi_epi64(tr1_1, tr1_5); + const __m128i tr2_6 = _mm_unpacklo_epi64(tr1_3, tr1_7); + const __m128i tr2_7 = _mm_unpackhi_epi64(tr1_3, tr1_7); + // 00 10 20 30 40 50 60 70 + // 01 11 21 31 41 51 61 71 + // 02 12 22 32 42 52 62 72 + // 03 13 23 33 43 53 63 73 + // 04 14 24 34 44 54 64 74 + // 05 15 25 35 45 55 65 75 + // 06 16 26 36 46 56 66 76 + // 07 17 27 37 47 57 67 77 + // Store results + _mm_store_si128((__m128i *)(out + 8 + 0 * 16), tr2_0); + _mm_store_si128((__m128i *)(out + 8 + 1 * 16), tr2_1); + _mm_store_si128((__m128i *)(out + 8 + 2 * 16), tr2_2); + _mm_store_si128((__m128i *)(out + 8 + 3 * 16), tr2_3); + _mm_store_si128((__m128i *)(out + 8 + 4 * 16), tr2_4); + _mm_store_si128((__m128i *)(out + 8 + 5 * 16), tr2_5); + _mm_store_si128((__m128i *)(out + 8 + 6 * 16), tr2_6); + _mm_store_si128((__m128i *)(out + 8 + 7 * 16), tr2_7); + } + out += 8*16; + } + // Setup in/out for next pass. + in = intermediate; + out = output; + } +} + +static INLINE void load_buffer_16x16_avx2(const int16_t* input, __m128i *in0, + __m128i *in1, int stride) { + // load first 8 columns + load_buffer_8x8_avx2(input, in0, stride); + load_buffer_8x8_avx2(input + 8 * stride, in0 + 8, stride); + + input += 8; + // load second 8 columns + load_buffer_8x8_avx2(input, in1, stride); + load_buffer_8x8_avx2(input + 8 * stride, in1 + 8, stride); +} + +static INLINE void write_buffer_16x16_avx2(int16_t *output, __m128i *in0, + __m128i *in1, int stride) { + // write first 8 columns + write_buffer_8x8_avx2(output, in0, stride); + write_buffer_8x8_avx2(output + 8 * stride, in0 + 8, stride); + // write second 8 columns + output += 8; + write_buffer_8x8_avx2(output, in1, stride); + write_buffer_8x8_avx2(output + 8 * stride, in1 + 8, stride); +} + +static INLINE void array_transpose_16x16_avx2(__m128i *res0, __m128i *res1) { + __m128i tbuf[8]; + array_transpose_8x8_avx2(res0, res0); + array_transpose_8x8_avx2(res1, tbuf); + array_transpose_8x8_avx2(res0 + 8, res1); + array_transpose_8x8_avx2(res1 + 8, res1 + 8); + + res0[8] = tbuf[0]; + res0[9] = tbuf[1]; + res0[10] = tbuf[2]; + res0[11] = tbuf[3]; + res0[12] = tbuf[4]; + res0[13] = tbuf[5]; + res0[14] = tbuf[6]; + res0[15] = tbuf[7]; +} + +static INLINE void right_shift_16x16_avx2(__m128i *res0, __m128i *res1) { + // perform rounding operations + right_shift_8x8_avx2(res0, 2); + right_shift_8x8_avx2(res0 + 8, 2); + right_shift_8x8_avx2(res1, 2); + right_shift_8x8_avx2(res1 + 8, 2); +} + +void fdct16_1d_8col_avx2(__m128i *in) { + // perform 16x16 1-D DCT for 8 columns + __m128i i[8], s[8], p[8], t[8], u[16], v[16]; + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64); + const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); + const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64); + const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); + const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); + const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); + const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); + const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); + const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64); + const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64); + const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64); + const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64); + const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64); + const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64); + const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64); + const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + + // stage 1 + i[0] = _mm_add_epi16(in[0], in[15]); + i[1] = _mm_add_epi16(in[1], in[14]); + i[2] = _mm_add_epi16(in[2], in[13]); + i[3] = _mm_add_epi16(in[3], in[12]); + i[4] = _mm_add_epi16(in[4], in[11]); + i[5] = _mm_add_epi16(in[5], in[10]); + i[6] = _mm_add_epi16(in[6], in[9]); + i[7] = _mm_add_epi16(in[7], in[8]); + + s[0] = _mm_sub_epi16(in[7], in[8]); + s[1] = _mm_sub_epi16(in[6], in[9]); + s[2] = _mm_sub_epi16(in[5], in[10]); + s[3] = _mm_sub_epi16(in[4], in[11]); + s[4] = _mm_sub_epi16(in[3], in[12]); + s[5] = _mm_sub_epi16(in[2], in[13]); + s[6] = _mm_sub_epi16(in[1], in[14]); + s[7] = _mm_sub_epi16(in[0], in[15]); + + p[0] = _mm_add_epi16(i[0], i[7]); + p[1] = _mm_add_epi16(i[1], i[6]); + p[2] = _mm_add_epi16(i[2], i[5]); + p[3] = _mm_add_epi16(i[3], i[4]); + p[4] = _mm_sub_epi16(i[3], i[4]); + p[5] = _mm_sub_epi16(i[2], i[5]); + p[6] = _mm_sub_epi16(i[1], i[6]); + p[7] = _mm_sub_epi16(i[0], i[7]); + + u[0] = _mm_add_epi16(p[0], p[3]); + u[1] = _mm_add_epi16(p[1], p[2]); + u[2] = _mm_sub_epi16(p[1], p[2]); + u[3] = _mm_sub_epi16(p[0], p[3]); + + v[0] = _mm_unpacklo_epi16(u[0], u[1]); + v[1] = _mm_unpackhi_epi16(u[0], u[1]); + v[2] = _mm_unpacklo_epi16(u[2], u[3]); + v[3] = _mm_unpackhi_epi16(u[2], u[3]); + + u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16); + u[1] = _mm_madd_epi16(v[1], k__cospi_p16_p16); + u[2] = _mm_madd_epi16(v[0], k__cospi_p16_m16); + u[3] = _mm_madd_epi16(v[1], k__cospi_p16_m16); + u[4] = _mm_madd_epi16(v[2], k__cospi_p24_p08); + u[5] = _mm_madd_epi16(v[3], k__cospi_p24_p08); + u[6] = _mm_madd_epi16(v[2], k__cospi_m08_p24); + u[7] = _mm_madd_epi16(v[3], k__cospi_m08_p24); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS); + + in[0] = _mm_packs_epi32(u[0], u[1]); + in[4] = _mm_packs_epi32(u[4], u[5]); + in[8] = _mm_packs_epi32(u[2], u[3]); + in[12] = _mm_packs_epi32(u[6], u[7]); + + u[0] = _mm_unpacklo_epi16(p[5], p[6]); + u[1] = _mm_unpackhi_epi16(p[5], p[6]); + v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16); + v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16); + v[2] = _mm_madd_epi16(u[0], k__cospi_p16_p16); + v[3] = _mm_madd_epi16(u[1], k__cospi_p16_p16); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + + u[0] = _mm_packs_epi32(v[0], v[1]); + u[1] = _mm_packs_epi32(v[2], v[3]); + + t[0] = _mm_add_epi16(p[4], u[0]); + t[1] = _mm_sub_epi16(p[4], u[0]); + t[2] = _mm_sub_epi16(p[7], u[1]); + t[3] = _mm_add_epi16(p[7], u[1]); + + u[0] = _mm_unpacklo_epi16(t[0], t[3]); + u[1] = _mm_unpackhi_epi16(t[0], t[3]); + u[2] = _mm_unpacklo_epi16(t[1], t[2]); + u[3] = _mm_unpackhi_epi16(t[1], t[2]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p28_p04); + v[1] = _mm_madd_epi16(u[1], k__cospi_p28_p04); + v[2] = _mm_madd_epi16(u[2], k__cospi_p12_p20); + v[3] = _mm_madd_epi16(u[3], k__cospi_p12_p20); + v[4] = _mm_madd_epi16(u[2], k__cospi_m20_p12); + v[5] = _mm_madd_epi16(u[3], k__cospi_m20_p12); + v[6] = _mm_madd_epi16(u[0], k__cospi_m04_p28); + v[7] = _mm_madd_epi16(u[1], k__cospi_m04_p28); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + + in[2] = _mm_packs_epi32(v[0], v[1]); + in[6] = _mm_packs_epi32(v[4], v[5]); + in[10] = _mm_packs_epi32(v[2], v[3]); + in[14] = _mm_packs_epi32(v[6], v[7]); + + // stage 2 + u[0] = _mm_unpacklo_epi16(s[2], s[5]); + u[1] = _mm_unpackhi_epi16(s[2], s[5]); + u[2] = _mm_unpacklo_epi16(s[3], s[4]); + u[3] = _mm_unpackhi_epi16(s[3], s[4]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16); + v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16); + v[2] = _mm_madd_epi16(u[2], k__cospi_m16_p16); + v[3] = _mm_madd_epi16(u[3], k__cospi_m16_p16); + v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16); + v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16); + v[6] = _mm_madd_epi16(u[0], k__cospi_p16_p16); + v[7] = _mm_madd_epi16(u[1], k__cospi_p16_p16); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + + t[2] = _mm_packs_epi32(v[0], v[1]); + t[3] = _mm_packs_epi32(v[2], v[3]); + t[4] = _mm_packs_epi32(v[4], v[5]); + t[5] = _mm_packs_epi32(v[6], v[7]); + + // stage 3 + p[0] = _mm_add_epi16(s[0], t[3]); + p[1] = _mm_add_epi16(s[1], t[2]); + p[2] = _mm_sub_epi16(s[1], t[2]); + p[3] = _mm_sub_epi16(s[0], t[3]); + p[4] = _mm_sub_epi16(s[7], t[4]); + p[5] = _mm_sub_epi16(s[6], t[5]); + p[6] = _mm_add_epi16(s[6], t[5]); + p[7] = _mm_add_epi16(s[7], t[4]); + + // stage 4 + u[0] = _mm_unpacklo_epi16(p[1], p[6]); + u[1] = _mm_unpackhi_epi16(p[1], p[6]); + u[2] = _mm_unpacklo_epi16(p[2], p[5]); + u[3] = _mm_unpackhi_epi16(p[2], p[5]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_m08_p24); + v[1] = _mm_madd_epi16(u[1], k__cospi_m08_p24); + v[2] = _mm_madd_epi16(u[2], k__cospi_m24_m08); + v[3] = _mm_madd_epi16(u[3], k__cospi_m24_m08); + v[4] = _mm_madd_epi16(u[2], k__cospi_m08_p24); + v[5] = _mm_madd_epi16(u[3], k__cospi_m08_p24); + v[6] = _mm_madd_epi16(u[0], k__cospi_p24_p08); + v[7] = _mm_madd_epi16(u[1], k__cospi_p24_p08); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + + t[1] = _mm_packs_epi32(v[0], v[1]); + t[2] = _mm_packs_epi32(v[2], v[3]); + t[5] = _mm_packs_epi32(v[4], v[5]); + t[6] = _mm_packs_epi32(v[6], v[7]); + + // stage 5 + s[0] = _mm_add_epi16(p[0], t[1]); + s[1] = _mm_sub_epi16(p[0], t[1]); + s[2] = _mm_sub_epi16(p[3], t[2]); + s[3] = _mm_add_epi16(p[3], t[2]); + s[4] = _mm_add_epi16(p[4], t[5]); + s[5] = _mm_sub_epi16(p[4], t[5]); + s[6] = _mm_sub_epi16(p[7], t[6]); + s[7] = _mm_add_epi16(p[7], t[6]); + + // stage 6 + u[0] = _mm_unpacklo_epi16(s[0], s[7]); + u[1] = _mm_unpackhi_epi16(s[0], s[7]); + u[2] = _mm_unpacklo_epi16(s[1], s[6]); + u[3] = _mm_unpackhi_epi16(s[1], s[6]); + u[4] = _mm_unpacklo_epi16(s[2], s[5]); + u[5] = _mm_unpackhi_epi16(s[2], s[5]); + u[6] = _mm_unpacklo_epi16(s[3], s[4]); + u[7] = _mm_unpackhi_epi16(s[3], s[4]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p30_p02); + v[1] = _mm_madd_epi16(u[1], k__cospi_p30_p02); + v[2] = _mm_madd_epi16(u[2], k__cospi_p14_p18); + v[3] = _mm_madd_epi16(u[3], k__cospi_p14_p18); + v[4] = _mm_madd_epi16(u[4], k__cospi_p22_p10); + v[5] = _mm_madd_epi16(u[5], k__cospi_p22_p10); + v[6] = _mm_madd_epi16(u[6], k__cospi_p06_p26); + v[7] = _mm_madd_epi16(u[7], k__cospi_p06_p26); + v[8] = _mm_madd_epi16(u[6], k__cospi_m26_p06); + v[9] = _mm_madd_epi16(u[7], k__cospi_m26_p06); + v[10] = _mm_madd_epi16(u[4], k__cospi_m10_p22); + v[11] = _mm_madd_epi16(u[5], k__cospi_m10_p22); + v[12] = _mm_madd_epi16(u[2], k__cospi_m18_p14); + v[13] = _mm_madd_epi16(u[3], k__cospi_m18_p14); + v[14] = _mm_madd_epi16(u[0], k__cospi_m02_p30); + v[15] = _mm_madd_epi16(u[1], k__cospi_m02_p30); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING); + u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING); + u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING); + u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING); + u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING); + u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING); + u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING); + u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS); + v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS); + v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS); + v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS); + v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS); + v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS); + v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS); + v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS); + + in[1] = _mm_packs_epi32(v[0], v[1]); + in[9] = _mm_packs_epi32(v[2], v[3]); + in[5] = _mm_packs_epi32(v[4], v[5]); + in[13] = _mm_packs_epi32(v[6], v[7]); + in[3] = _mm_packs_epi32(v[8], v[9]); + in[11] = _mm_packs_epi32(v[10], v[11]); + in[7] = _mm_packs_epi32(v[12], v[13]); + in[15] = _mm_packs_epi32(v[14], v[15]); +} + +void fadst16_1d_8col_avx2(__m128i *in) { + // perform 16x16 1-D ADST for 8 columns + __m128i s[16], x[16], u[32], v[32]; + const __m128i k__cospi_p01_p31 = pair_set_epi16(cospi_1_64, cospi_31_64); + const __m128i k__cospi_p31_m01 = pair_set_epi16(cospi_31_64, -cospi_1_64); + const __m128i k__cospi_p05_p27 = pair_set_epi16(cospi_5_64, cospi_27_64); + const __m128i k__cospi_p27_m05 = pair_set_epi16(cospi_27_64, -cospi_5_64); + const __m128i k__cospi_p09_p23 = pair_set_epi16(cospi_9_64, cospi_23_64); + const __m128i k__cospi_p23_m09 = pair_set_epi16(cospi_23_64, -cospi_9_64); + const __m128i k__cospi_p13_p19 = pair_set_epi16(cospi_13_64, cospi_19_64); + const __m128i k__cospi_p19_m13 = pair_set_epi16(cospi_19_64, -cospi_13_64); + const __m128i k__cospi_p17_p15 = pair_set_epi16(cospi_17_64, cospi_15_64); + const __m128i k__cospi_p15_m17 = pair_set_epi16(cospi_15_64, -cospi_17_64); + const __m128i k__cospi_p21_p11 = pair_set_epi16(cospi_21_64, cospi_11_64); + const __m128i k__cospi_p11_m21 = pair_set_epi16(cospi_11_64, -cospi_21_64); + const __m128i k__cospi_p25_p07 = pair_set_epi16(cospi_25_64, cospi_7_64); + const __m128i k__cospi_p07_m25 = pair_set_epi16(cospi_7_64, -cospi_25_64); + const __m128i k__cospi_p29_p03 = pair_set_epi16(cospi_29_64, cospi_3_64); + const __m128i k__cospi_p03_m29 = pair_set_epi16(cospi_3_64, -cospi_29_64); + const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64); + const __m128i k__cospi_p28_m04 = pair_set_epi16(cospi_28_64, -cospi_4_64); + const __m128i k__cospi_p20_p12 = pair_set_epi16(cospi_20_64, cospi_12_64); + const __m128i k__cospi_p12_m20 = pair_set_epi16(cospi_12_64, -cospi_20_64); + const __m128i k__cospi_m28_p04 = pair_set_epi16(-cospi_28_64, cospi_4_64); + const __m128i k__cospi_m12_p20 = pair_set_epi16(-cospi_12_64, cospi_20_64); + const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64); + const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64); + const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64); + const __m128i k__cospi_m16_m16 = _mm_set1_epi16(-cospi_16_64); + const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); + const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); + const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64); + const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); + const __m128i kZero = _mm_set1_epi16(0); + + u[0] = _mm_unpacklo_epi16(in[15], in[0]); + u[1] = _mm_unpackhi_epi16(in[15], in[0]); + u[2] = _mm_unpacklo_epi16(in[13], in[2]); + u[3] = _mm_unpackhi_epi16(in[13], in[2]); + u[4] = _mm_unpacklo_epi16(in[11], in[4]); + u[5] = _mm_unpackhi_epi16(in[11], in[4]); + u[6] = _mm_unpacklo_epi16(in[9], in[6]); + u[7] = _mm_unpackhi_epi16(in[9], in[6]); + u[8] = _mm_unpacklo_epi16(in[7], in[8]); + u[9] = _mm_unpackhi_epi16(in[7], in[8]); + u[10] = _mm_unpacklo_epi16(in[5], in[10]); + u[11] = _mm_unpackhi_epi16(in[5], in[10]); + u[12] = _mm_unpacklo_epi16(in[3], in[12]); + u[13] = _mm_unpackhi_epi16(in[3], in[12]); + u[14] = _mm_unpacklo_epi16(in[1], in[14]); + u[15] = _mm_unpackhi_epi16(in[1], in[14]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p01_p31); + v[1] = _mm_madd_epi16(u[1], k__cospi_p01_p31); + v[2] = _mm_madd_epi16(u[0], k__cospi_p31_m01); + v[3] = _mm_madd_epi16(u[1], k__cospi_p31_m01); + v[4] = _mm_madd_epi16(u[2], k__cospi_p05_p27); + v[5] = _mm_madd_epi16(u[3], k__cospi_p05_p27); + v[6] = _mm_madd_epi16(u[2], k__cospi_p27_m05); + v[7] = _mm_madd_epi16(u[3], k__cospi_p27_m05); + v[8] = _mm_madd_epi16(u[4], k__cospi_p09_p23); + v[9] = _mm_madd_epi16(u[5], k__cospi_p09_p23); + v[10] = _mm_madd_epi16(u[4], k__cospi_p23_m09); + v[11] = _mm_madd_epi16(u[5], k__cospi_p23_m09); + v[12] = _mm_madd_epi16(u[6], k__cospi_p13_p19); + v[13] = _mm_madd_epi16(u[7], k__cospi_p13_p19); + v[14] = _mm_madd_epi16(u[6], k__cospi_p19_m13); + v[15] = _mm_madd_epi16(u[7], k__cospi_p19_m13); + v[16] = _mm_madd_epi16(u[8], k__cospi_p17_p15); + v[17] = _mm_madd_epi16(u[9], k__cospi_p17_p15); + v[18] = _mm_madd_epi16(u[8], k__cospi_p15_m17); + v[19] = _mm_madd_epi16(u[9], k__cospi_p15_m17); + v[20] = _mm_madd_epi16(u[10], k__cospi_p21_p11); + v[21] = _mm_madd_epi16(u[11], k__cospi_p21_p11); + v[22] = _mm_madd_epi16(u[10], k__cospi_p11_m21); + v[23] = _mm_madd_epi16(u[11], k__cospi_p11_m21); + v[24] = _mm_madd_epi16(u[12], k__cospi_p25_p07); + v[25] = _mm_madd_epi16(u[13], k__cospi_p25_p07); + v[26] = _mm_madd_epi16(u[12], k__cospi_p07_m25); + v[27] = _mm_madd_epi16(u[13], k__cospi_p07_m25); + v[28] = _mm_madd_epi16(u[14], k__cospi_p29_p03); + v[29] = _mm_madd_epi16(u[15], k__cospi_p29_p03); + v[30] = _mm_madd_epi16(u[14], k__cospi_p03_m29); + v[31] = _mm_madd_epi16(u[15], k__cospi_p03_m29); + + u[0] = _mm_add_epi32(v[0], v[16]); + u[1] = _mm_add_epi32(v[1], v[17]); + u[2] = _mm_add_epi32(v[2], v[18]); + u[3] = _mm_add_epi32(v[3], v[19]); + u[4] = _mm_add_epi32(v[4], v[20]); + u[5] = _mm_add_epi32(v[5], v[21]); + u[6] = _mm_add_epi32(v[6], v[22]); + u[7] = _mm_add_epi32(v[7], v[23]); + u[8] = _mm_add_epi32(v[8], v[24]); + u[9] = _mm_add_epi32(v[9], v[25]); + u[10] = _mm_add_epi32(v[10], v[26]); + u[11] = _mm_add_epi32(v[11], v[27]); + u[12] = _mm_add_epi32(v[12], v[28]); + u[13] = _mm_add_epi32(v[13], v[29]); + u[14] = _mm_add_epi32(v[14], v[30]); + u[15] = _mm_add_epi32(v[15], v[31]); + u[16] = _mm_sub_epi32(v[0], v[16]); + u[17] = _mm_sub_epi32(v[1], v[17]); + u[18] = _mm_sub_epi32(v[2], v[18]); + u[19] = _mm_sub_epi32(v[3], v[19]); + u[20] = _mm_sub_epi32(v[4], v[20]); + u[21] = _mm_sub_epi32(v[5], v[21]); + u[22] = _mm_sub_epi32(v[6], v[22]); + u[23] = _mm_sub_epi32(v[7], v[23]); + u[24] = _mm_sub_epi32(v[8], v[24]); + u[25] = _mm_sub_epi32(v[9], v[25]); + u[26] = _mm_sub_epi32(v[10], v[26]); + u[27] = _mm_sub_epi32(v[11], v[27]); + u[28] = _mm_sub_epi32(v[12], v[28]); + u[29] = _mm_sub_epi32(v[13], v[29]); + u[30] = _mm_sub_epi32(v[14], v[30]); + u[31] = _mm_sub_epi32(v[15], v[31]); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING); + v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING); + v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING); + v[16] = _mm_add_epi32(u[16], k__DCT_CONST_ROUNDING); + v[17] = _mm_add_epi32(u[17], k__DCT_CONST_ROUNDING); + v[18] = _mm_add_epi32(u[18], k__DCT_CONST_ROUNDING); + v[19] = _mm_add_epi32(u[19], k__DCT_CONST_ROUNDING); + v[20] = _mm_add_epi32(u[20], k__DCT_CONST_ROUNDING); + v[21] = _mm_add_epi32(u[21], k__DCT_CONST_ROUNDING); + v[22] = _mm_add_epi32(u[22], k__DCT_CONST_ROUNDING); + v[23] = _mm_add_epi32(u[23], k__DCT_CONST_ROUNDING); + v[24] = _mm_add_epi32(u[24], k__DCT_CONST_ROUNDING); + v[25] = _mm_add_epi32(u[25], k__DCT_CONST_ROUNDING); + v[26] = _mm_add_epi32(u[26], k__DCT_CONST_ROUNDING); + v[27] = _mm_add_epi32(u[27], k__DCT_CONST_ROUNDING); + v[28] = _mm_add_epi32(u[28], k__DCT_CONST_ROUNDING); + v[29] = _mm_add_epi32(u[29], k__DCT_CONST_ROUNDING); + v[30] = _mm_add_epi32(u[30], k__DCT_CONST_ROUNDING); + v[31] = _mm_add_epi32(u[31], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS); + u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS); + u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS); + u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS); + u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS); + u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS); + u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS); + u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS); + u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS); + u[16] = _mm_srai_epi32(v[16], DCT_CONST_BITS); + u[17] = _mm_srai_epi32(v[17], DCT_CONST_BITS); + u[18] = _mm_srai_epi32(v[18], DCT_CONST_BITS); + u[19] = _mm_srai_epi32(v[19], DCT_CONST_BITS); + u[20] = _mm_srai_epi32(v[20], DCT_CONST_BITS); + u[21] = _mm_srai_epi32(v[21], DCT_CONST_BITS); + u[22] = _mm_srai_epi32(v[22], DCT_CONST_BITS); + u[23] = _mm_srai_epi32(v[23], DCT_CONST_BITS); + u[24] = _mm_srai_epi32(v[24], DCT_CONST_BITS); + u[25] = _mm_srai_epi32(v[25], DCT_CONST_BITS); + u[26] = _mm_srai_epi32(v[26], DCT_CONST_BITS); + u[27] = _mm_srai_epi32(v[27], DCT_CONST_BITS); + u[28] = _mm_srai_epi32(v[28], DCT_CONST_BITS); + u[29] = _mm_srai_epi32(v[29], DCT_CONST_BITS); + u[30] = _mm_srai_epi32(v[30], DCT_CONST_BITS); + u[31] = _mm_srai_epi32(v[31], DCT_CONST_BITS); + + s[0] = _mm_packs_epi32(u[0], u[1]); + s[1] = _mm_packs_epi32(u[2], u[3]); + s[2] = _mm_packs_epi32(u[4], u[5]); + s[3] = _mm_packs_epi32(u[6], u[7]); + s[4] = _mm_packs_epi32(u[8], u[9]); + s[5] = _mm_packs_epi32(u[10], u[11]); + s[6] = _mm_packs_epi32(u[12], u[13]); + s[7] = _mm_packs_epi32(u[14], u[15]); + s[8] = _mm_packs_epi32(u[16], u[17]); + s[9] = _mm_packs_epi32(u[18], u[19]); + s[10] = _mm_packs_epi32(u[20], u[21]); + s[11] = _mm_packs_epi32(u[22], u[23]); + s[12] = _mm_packs_epi32(u[24], u[25]); + s[13] = _mm_packs_epi32(u[26], u[27]); + s[14] = _mm_packs_epi32(u[28], u[29]); + s[15] = _mm_packs_epi32(u[30], u[31]); + + // stage 2 + u[0] = _mm_unpacklo_epi16(s[8], s[9]); + u[1] = _mm_unpackhi_epi16(s[8], s[9]); + u[2] = _mm_unpacklo_epi16(s[10], s[11]); + u[3] = _mm_unpackhi_epi16(s[10], s[11]); + u[4] = _mm_unpacklo_epi16(s[12], s[13]); + u[5] = _mm_unpackhi_epi16(s[12], s[13]); + u[6] = _mm_unpacklo_epi16(s[14], s[15]); + u[7] = _mm_unpackhi_epi16(s[14], s[15]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p04_p28); + v[1] = _mm_madd_epi16(u[1], k__cospi_p04_p28); + v[2] = _mm_madd_epi16(u[0], k__cospi_p28_m04); + v[3] = _mm_madd_epi16(u[1], k__cospi_p28_m04); + v[4] = _mm_madd_epi16(u[2], k__cospi_p20_p12); + v[5] = _mm_madd_epi16(u[3], k__cospi_p20_p12); + v[6] = _mm_madd_epi16(u[2], k__cospi_p12_m20); + v[7] = _mm_madd_epi16(u[3], k__cospi_p12_m20); + v[8] = _mm_madd_epi16(u[4], k__cospi_m28_p04); + v[9] = _mm_madd_epi16(u[5], k__cospi_m28_p04); + v[10] = _mm_madd_epi16(u[4], k__cospi_p04_p28); + v[11] = _mm_madd_epi16(u[5], k__cospi_p04_p28); + v[12] = _mm_madd_epi16(u[6], k__cospi_m12_p20); + v[13] = _mm_madd_epi16(u[7], k__cospi_m12_p20); + v[14] = _mm_madd_epi16(u[6], k__cospi_p20_p12); + v[15] = _mm_madd_epi16(u[7], k__cospi_p20_p12); + + u[0] = _mm_add_epi32(v[0], v[8]); + u[1] = _mm_add_epi32(v[1], v[9]); + u[2] = _mm_add_epi32(v[2], v[10]); + u[3] = _mm_add_epi32(v[3], v[11]); + u[4] = _mm_add_epi32(v[4], v[12]); + u[5] = _mm_add_epi32(v[5], v[13]); + u[6] = _mm_add_epi32(v[6], v[14]); + u[7] = _mm_add_epi32(v[7], v[15]); + u[8] = _mm_sub_epi32(v[0], v[8]); + u[9] = _mm_sub_epi32(v[1], v[9]); + u[10] = _mm_sub_epi32(v[2], v[10]); + u[11] = _mm_sub_epi32(v[3], v[11]); + u[12] = _mm_sub_epi32(v[4], v[12]); + u[13] = _mm_sub_epi32(v[5], v[13]); + u[14] = _mm_sub_epi32(v[6], v[14]); + u[15] = _mm_sub_epi32(v[7], v[15]); + + v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING); + v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING); + v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING); + v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING); + v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING); + v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING); + v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING); + v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS); + u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS); + u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS); + u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS); + u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS); + u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS); + u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS); + u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS); + u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS); + u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS); + u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS); + u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS); + u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS); + u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS); + u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS); + u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS); + + x[0] = _mm_add_epi16(s[0], s[4]); + x[1] = _mm_add_epi16(s[1], s[5]); + x[2] = _mm_add_epi16(s[2], s[6]); + x[3] = _mm_add_epi16(s[3], s[7]); + x[4] = _mm_sub_epi16(s[0], s[4]); + x[5] = _mm_sub_epi16(s[1], s[5]); + x[6] = _mm_sub_epi16(s[2], s[6]); + x[7] = _mm_sub_epi16(s[3], s[7]); + x[8] = _mm_packs_epi32(u[0], u[1]); + x[9] = _mm_packs_epi32(u[2], u[3]); + x[10] = _mm_packs_epi32(u[4], u[5]); + x[11] = _mm_packs_epi32(u[6], u[7]); + x[12] = _mm_packs_epi32(u[8], u[9]); + x[13] = _mm_packs_epi32(u[10], u[11]); + x[14] = _mm_packs_epi32(u[12], u[13]); + x[15] = _mm_packs_epi32(u[14], u[15]); + + // stage 3 + u[0] = _mm_unpacklo_epi16(x[4], x[5]); + u[1] = _mm_unpackhi_epi16(x[4], x[5]); + u[2] = _mm_unpacklo_epi16(x[6], x[7]); + u[3] = _mm_unpackhi_epi16(x[6], x[7]); + u[4] = _mm_unpacklo_epi16(x[12], x[13]); + u[5] = _mm_unpackhi_epi16(x[12], x[13]); + u[6] = _mm_unpacklo_epi16(x[14], x[15]); + u[7] = _mm_unpackhi_epi16(x[14], x[15]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_p08_p24); + v[1] = _mm_madd_epi16(u[1], k__cospi_p08_p24); + v[2] = _mm_madd_epi16(u[0], k__cospi_p24_m08); + v[3] = _mm_madd_epi16(u[1], k__cospi_p24_m08); + v[4] = _mm_madd_epi16(u[2], k__cospi_m24_p08); + v[5] = _mm_madd_epi16(u[3], k__cospi_m24_p08); + v[6] = _mm_madd_epi16(u[2], k__cospi_p08_p24); + v[7] = _mm_madd_epi16(u[3], k__cospi_p08_p24); + v[8] = _mm_madd_epi16(u[4], k__cospi_p08_p24); + v[9] = _mm_madd_epi16(u[5], k__cospi_p08_p24); + v[10] = _mm_madd_epi16(u[4], k__cospi_p24_m08); + v[11] = _mm_madd_epi16(u[5], k__cospi_p24_m08); + v[12] = _mm_madd_epi16(u[6], k__cospi_m24_p08); + v[13] = _mm_madd_epi16(u[7], k__cospi_m24_p08); + v[14] = _mm_madd_epi16(u[6], k__cospi_p08_p24); + v[15] = _mm_madd_epi16(u[7], k__cospi_p08_p24); + + u[0] = _mm_add_epi32(v[0], v[4]); + u[1] = _mm_add_epi32(v[1], v[5]); + u[2] = _mm_add_epi32(v[2], v[6]); + u[3] = _mm_add_epi32(v[3], v[7]); + u[4] = _mm_sub_epi32(v[0], v[4]); + u[5] = _mm_sub_epi32(v[1], v[5]); + u[6] = _mm_sub_epi32(v[2], v[6]); + u[7] = _mm_sub_epi32(v[3], v[7]); + u[8] = _mm_add_epi32(v[8], v[12]); + u[9] = _mm_add_epi32(v[9], v[13]); + u[10] = _mm_add_epi32(v[10], v[14]); + u[11] = _mm_add_epi32(v[11], v[15]); + u[12] = _mm_sub_epi32(v[8], v[12]); + u[13] = _mm_sub_epi32(v[9], v[13]); + u[14] = _mm_sub_epi32(v[10], v[14]); + u[15] = _mm_sub_epi32(v[11], v[15]); + + u[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING); + u[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING); + u[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING); + u[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING); + u[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING); + u[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING); + u[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING); + u[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING); + u[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS); + v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS); + v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS); + v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS); + v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS); + v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS); + v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS); + v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS); + + s[0] = _mm_add_epi16(x[0], x[2]); + s[1] = _mm_add_epi16(x[1], x[3]); + s[2] = _mm_sub_epi16(x[0], x[2]); + s[3] = _mm_sub_epi16(x[1], x[3]); + s[4] = _mm_packs_epi32(v[0], v[1]); + s[5] = _mm_packs_epi32(v[2], v[3]); + s[6] = _mm_packs_epi32(v[4], v[5]); + s[7] = _mm_packs_epi32(v[6], v[7]); + s[8] = _mm_add_epi16(x[8], x[10]); + s[9] = _mm_add_epi16(x[9], x[11]); + s[10] = _mm_sub_epi16(x[8], x[10]); + s[11] = _mm_sub_epi16(x[9], x[11]); + s[12] = _mm_packs_epi32(v[8], v[9]); + s[13] = _mm_packs_epi32(v[10], v[11]); + s[14] = _mm_packs_epi32(v[12], v[13]); + s[15] = _mm_packs_epi32(v[14], v[15]); + + // stage 4 + u[0] = _mm_unpacklo_epi16(s[2], s[3]); + u[1] = _mm_unpackhi_epi16(s[2], s[3]); + u[2] = _mm_unpacklo_epi16(s[6], s[7]); + u[3] = _mm_unpackhi_epi16(s[6], s[7]); + u[4] = _mm_unpacklo_epi16(s[10], s[11]); + u[5] = _mm_unpackhi_epi16(s[10], s[11]); + u[6] = _mm_unpacklo_epi16(s[14], s[15]); + u[7] = _mm_unpackhi_epi16(s[14], s[15]); + + v[0] = _mm_madd_epi16(u[0], k__cospi_m16_m16); + v[1] = _mm_madd_epi16(u[1], k__cospi_m16_m16); + v[2] = _mm_madd_epi16(u[0], k__cospi_p16_m16); + v[3] = _mm_madd_epi16(u[1], k__cospi_p16_m16); + v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16); + v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16); + v[6] = _mm_madd_epi16(u[2], k__cospi_m16_p16); + v[7] = _mm_madd_epi16(u[3], k__cospi_m16_p16); + v[8] = _mm_madd_epi16(u[4], k__cospi_p16_p16); + v[9] = _mm_madd_epi16(u[5], k__cospi_p16_p16); + v[10] = _mm_madd_epi16(u[4], k__cospi_m16_p16); + v[11] = _mm_madd_epi16(u[5], k__cospi_m16_p16); + v[12] = _mm_madd_epi16(u[6], k__cospi_m16_m16); + v[13] = _mm_madd_epi16(u[7], k__cospi_m16_m16); + v[14] = _mm_madd_epi16(u[6], k__cospi_p16_m16); + v[15] = _mm_madd_epi16(u[7], k__cospi_p16_m16); + + u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING); + u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING); + u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING); + u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING); + u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING); + u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING); + u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING); + u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING); + u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING); + u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING); + u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING); + u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING); + u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING); + u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING); + u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING); + u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING); + + v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS); + v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS); + v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS); + v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS); + v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS); + v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS); + v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS); + v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS); + v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS); + v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS); + v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS); + v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS); + v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS); + v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS); + v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS); + v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS); + + in[0] = s[0]; + in[1] = _mm_sub_epi16(kZero, s[8]); + in[2] = s[12]; + in[3] = _mm_sub_epi16(kZero, s[4]); + in[4] = _mm_packs_epi32(v[4], v[5]); + in[5] = _mm_packs_epi32(v[12], v[13]); + in[6] = _mm_packs_epi32(v[8], v[9]); + in[7] = _mm_packs_epi32(v[0], v[1]); + in[8] = _mm_packs_epi32(v[2], v[3]); + in[9] = _mm_packs_epi32(v[10], v[11]); + in[10] = _mm_packs_epi32(v[14], v[15]); + in[11] = _mm_packs_epi32(v[6], v[7]); + in[12] = s[5]; + in[13] = _mm_sub_epi16(kZero, s[13]); + in[14] = s[9]; + in[15] = _mm_sub_epi16(kZero, s[1]); +} + +void fdct16_1d_avx2(__m128i *in0, __m128i *in1) { + fdct16_1d_8col_avx2(in0); + fdct16_1d_8col_avx2(in1); + array_transpose_16x16_avx2(in0, in1); +} + +void fadst16_1d_avx2(__m128i *in0, __m128i *in1) { + fadst16_1d_8col_avx2(in0); + fadst16_1d_8col_avx2(in1); + array_transpose_16x16_avx2(in0, in1); +} + +void vp9_short_fht16x16_avx2(const int16_t *input, int16_t *output, + int stride, int tx_type) { + __m128i in0[16], in1[16]; + load_buffer_16x16_avx2(input, in0, in1, stride); + switch (tx_type) { + case 0: // DCT_DCT + fdct16_1d_avx2(in0, in1); + right_shift_16x16_avx2(in0, in1); + fdct16_1d_avx2(in0, in1); + break; + case 1: // ADST_DCT + fadst16_1d_avx2(in0, in1); + right_shift_16x16_avx2(in0, in1); + fdct16_1d_avx2(in0, in1); + break; + case 2: // DCT_ADST + fdct16_1d_avx2(in0, in1); + right_shift_16x16_avx2(in0, in1); + fadst16_1d_avx2(in0, in1); + break; + case 3: // ADST_ADST + fadst16_1d_avx2(in0, in1); + right_shift_16x16_avx2(in0, in1); + fadst16_1d_avx2(in0, in1); + break; + default: + assert(0); + break; + } + write_buffer_16x16_avx2(output, in0, in1, 16); +} + +#define FDCT32x32_2D_AVX2 vp9_fdct32x32_rd_avx2 +#define FDCT32x32_HIGH_PRECISION 0 +#include "vp9/encoder/x86/vp9_dct32x32_avx2.c" +#undef FDCT32x32_2D_AVX2 +#undef FDCT32x32_HIGH_PRECISION + +#define FDCT32x32_2D_AVX2 vp9_fdct32x32_avx2 +#define FDCT32x32_HIGH_PRECISION 1 +#include "vp9/encoder/x86/vp9_dct32x32_avx2.c" // NOLINT +#undef FDCT32x32_2D_AVX2 +#undef FDCT32x32_HIGH_PRECISION |