diff options
Diffstat (limited to 'vpx_dsp/x86/inv_txfm_ssse3.c')
| -rw-r--r-- | vpx_dsp/x86/inv_txfm_ssse3.c | 790 |
1 files changed, 300 insertions, 490 deletions
diff --git a/vpx_dsp/x86/inv_txfm_ssse3.c b/vpx_dsp/x86/inv_txfm_ssse3.c index f1b838ae2..be1fdc791 100644 --- a/vpx_dsp/x86/inv_txfm_ssse3.c +++ b/vpx_dsp/x86/inv_txfm_ssse3.c @@ -16,6 +16,20 @@ #include "vpx_dsp/x86/transpose_sse2.h" #include "vpx_dsp/x86/txfm_common_sse2.h" +static INLINE void partial_butterfly_ssse3(const __m128i in, const int c0, + const int c1, __m128i *const out0, + __m128i *const out1) { + const __m128i cst0 = _mm_set1_epi16(2 * c0); + const __m128i cst1 = _mm_set1_epi16(2 * c1); + *out0 = _mm_mulhrs_epi16(in, cst0); + *out1 = _mm_mulhrs_epi16(in, cst1); +} + +static INLINE __m128i partial_butterfly_cospi16_ssse3(const __m128i in) { + const __m128i coef_pair = _mm_set1_epi16(2 * (int)cospi_16_64); + return _mm_mulhrs_epi16(in, coef_pair); +} + void vpx_idct8x8_12_add_ssse3(const tran_low_t *input, uint8_t *dest, int stride) { __m128i io[8]; @@ -29,531 +43,327 @@ void vpx_idct8x8_12_add_ssse3(const tran_low_t *input, uint8_t *dest, write_buffer_8x8(io, dest, stride); } -static void idct32_34_first_half(const __m128i *in, __m128i *stp1) { - const __m128i stk2_0 = pair_set_epi16(2 * cospi_30_64, 2 * cospi_30_64); - const __m128i stk2_1 = pair_set_epi16(2 * cospi_2_64, 2 * cospi_2_64); - const __m128i stk2_6 = pair_set_epi16(-2 * cospi_26_64, -2 * cospi_26_64); - const __m128i stk2_7 = pair_set_epi16(2 * cospi_6_64, 2 * cospi_6_64); - - const __m128i stk3_0 = pair_set_epi16(2 * cospi_28_64, 2 * cospi_28_64); - const __m128i stk3_1 = pair_set_epi16(2 * cospi_4_64, 2 * cospi_4_64); - - const __m128i stk4_0 = pair_set_epi16(2 * cospi_16_64, 2 * cospi_16_64); - __m128i u0, u1, u2, u3, u4, u5, u6, u7; - __m128i x0, x1, x4, x5, x6, x7; - __m128i v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15; - - // phase 1 - - // 0, 15 - u2 = _mm_mulhrs_epi16(in[2], stk2_1); // stp2_15 - u3 = _mm_mulhrs_epi16(in[6], stk2_7); // stp2_12 - v15 = _mm_add_epi16(u2, u3); - // in[0], in[4] - x0 = _mm_mulhrs_epi16(in[0], stk4_0); // stp1[0] - x7 = _mm_mulhrs_epi16(in[4], stk3_1); // stp1[7] - v0 = _mm_add_epi16(x0, x7); // stp2_0 - stp1[0] = _mm_add_epi16(v0, v15); - stp1[15] = _mm_sub_epi16(v0, v15); - - // in[2], in[6] - u0 = _mm_mulhrs_epi16(in[2], stk2_0); // stp2_8 - u1 = _mm_mulhrs_epi16(in[6], stk2_6); // stp2_11 - butterfly(u2, u0, (int)cospi_24_64, (int)cospi_8_64, &u4, - &u5); // stp2_9, stp2_14 - butterfly(u3, u1, -(int)cospi_8_64, (int)cospi_24_64, &u6, - &u7); // stp2_10, stp2_13 - - v8 = _mm_add_epi16(u0, u1); - v9 = _mm_add_epi16(u4, u6); - v10 = _mm_sub_epi16(u4, u6); - v11 = _mm_sub_epi16(u0, u1); - v12 = _mm_sub_epi16(u2, u3); - v13 = _mm_sub_epi16(u5, u7); - v14 = _mm_add_epi16(u5, u7); - - butterfly(v13, v10, (int)cospi_16_64, (int)cospi_16_64, &v10, &v13); - butterfly(v12, v11, (int)cospi_16_64, (int)cospi_16_64, &v11, &v12); - - // 1, 14 - x1 = _mm_mulhrs_epi16(in[0], stk4_0); // stp1[1], stk4_1 = stk4_0 - // stp1[2] = stp1[0], stp1[3] = stp1[1] - x4 = _mm_mulhrs_epi16(in[4], stk3_0); // stp1[4] - butterfly(x7, x4, (int)cospi_16_64, (int)cospi_16_64, &x5, &x6); - v1 = _mm_add_epi16(x1, x6); // stp2_1 - v2 = _mm_add_epi16(x0, x5); // stp2_2 - stp1[1] = _mm_add_epi16(v1, v14); - stp1[14] = _mm_sub_epi16(v1, v14); - - stp1[2] = _mm_add_epi16(v2, v13); - stp1[13] = _mm_sub_epi16(v2, v13); - - v3 = _mm_add_epi16(x1, x4); // stp2_3 - v4 = _mm_sub_epi16(x1, x4); // stp2_4 - - v5 = _mm_sub_epi16(x0, x5); // stp2_5 - - v6 = _mm_sub_epi16(x1, x6); // stp2_6 - v7 = _mm_sub_epi16(x0, x7); // stp2_7 - stp1[3] = _mm_add_epi16(v3, v12); - stp1[12] = _mm_sub_epi16(v3, v12); - - stp1[6] = _mm_add_epi16(v6, v9); - stp1[9] = _mm_sub_epi16(v6, v9); - - stp1[7] = _mm_add_epi16(v7, v8); - stp1[8] = _mm_sub_epi16(v7, v8); - - stp1[4] = _mm_add_epi16(v4, v11); - stp1[11] = _mm_sub_epi16(v4, v11); - - stp1[5] = _mm_add_epi16(v5, v10); - stp1[10] = _mm_sub_epi16(v5, v10); +// Group the coefficient calculation into smaller functions to prevent stack +// spillover in 32x32 idct optimizations: +// quarter_1: 0-7 +// quarter_2: 8-15 +// quarter_3_4: 16-23, 24-31 + +// For each 8x32 block __m128i in[32], +// Input with index, 0, 4 +// output pixels: 0-7 in __m128i out[32] +static INLINE void idct32_34_8x32_quarter_1(const __m128i *const in /*in[32]*/, + __m128i *const out /*out[8]*/) { + __m128i step1[8], step2[8]; + + // stage 3 + partial_butterfly_ssse3(in[4], (int)cospi_28_64, (int)cospi_4_64, &step1[4], + &step1[7]); + + // stage 4 + step2[0] = partial_butterfly_cospi16_ssse3(in[0]); + step2[4] = step1[4]; + step2[5] = step1[4]; + step2[6] = step1[7]; + step2[7] = step1[7]; + + // stage 5 + step1[0] = step2[0]; + step1[1] = step2[0]; + step1[2] = step2[0]; + step1[3] = step2[0]; + step1[4] = step2[4]; + butterfly(step2[6], step2[5], (int)cospi_16_64, (int)cospi_16_64, &step1[5], + &step1[6]); + step1[7] = step2[7]; + + // stage 6 + out[0] = _mm_add_epi16(step1[0], step1[7]); + out[1] = _mm_add_epi16(step1[1], step1[6]); + out[2] = _mm_add_epi16(step1[2], step1[5]); + out[3] = _mm_add_epi16(step1[3], step1[4]); + out[4] = _mm_sub_epi16(step1[3], step1[4]); + out[5] = _mm_sub_epi16(step1[2], step1[5]); + out[6] = _mm_sub_epi16(step1[1], step1[6]); + out[7] = _mm_sub_epi16(step1[0], step1[7]); +} + +// For each 8x32 block __m128i in[32], +// Input with index, 2, 6 +// output pixels: 8-15 in __m128i out[32] +static INLINE void idct32_34_8x32_quarter_2(const __m128i *const in /*in[32]*/, + __m128i *const out /*out[16]*/) { + __m128i step1[16], step2[16]; + + // stage 2 + partial_butterfly_ssse3(in[2], (int)cospi_30_64, (int)cospi_2_64, &step2[8], + &step2[15]); + partial_butterfly_ssse3(in[6], -(int)cospi_26_64, (int)cospi_6_64, &step2[11], + &step2[12]); + + // stage 3 + step1[8] = step2[8]; + step1[9] = step2[8]; + step1[14] = step2[15]; + step1[15] = step2[15]; + step1[10] = step2[11]; + step1[11] = step2[11]; + step1[12] = step2[12]; + step1[13] = step2[12]; + + idct32_8x32_quarter_2_stage_4_to_6(step1, out); +} + +static INLINE void idct32_34_8x32_quarter_1_2( + const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { + __m128i temp[16]; + idct32_34_8x32_quarter_1(in, temp); + idct32_34_8x32_quarter_2(in, temp); + // stage 7 + add_sub_butterfly(temp, out, 16); } -static void idct32_34_second_half(const __m128i *in, __m128i *stp1) { - const __m128i stk1_0 = pair_set_epi16(2 * cospi_31_64, 2 * cospi_31_64); - const __m128i stk1_1 = pair_set_epi16(2 * cospi_1_64, 2 * cospi_1_64); - const __m128i stk1_6 = pair_set_epi16(-2 * cospi_25_64, -2 * cospi_25_64); - const __m128i stk1_7 = pair_set_epi16(2 * cospi_7_64, 2 * cospi_7_64); - const __m128i stk1_8 = pair_set_epi16(2 * cospi_27_64, 2 * cospi_27_64); - const __m128i stk1_9 = pair_set_epi16(2 * cospi_5_64, 2 * cospi_5_64); - const __m128i stk1_14 = pair_set_epi16(-2 * cospi_29_64, -2 * cospi_29_64); - const __m128i stk1_15 = pair_set_epi16(2 * cospi_3_64, 2 * cospi_3_64); - __m128i v16, v17, v18, v19, v20, v21, v22, v23; - __m128i v24, v25, v26, v27, v28, v29, v30, v31; - __m128i u16, u17, u18, u19, u20, u21, u22, u23; - __m128i u24, u25, u26, u27, u28, u29, u30, u31; - - v16 = _mm_mulhrs_epi16(in[1], stk1_0); - v31 = _mm_mulhrs_epi16(in[1], stk1_1); - - v19 = _mm_mulhrs_epi16(in[7], stk1_6); - v28 = _mm_mulhrs_epi16(in[7], stk1_7); - - v20 = _mm_mulhrs_epi16(in[5], stk1_8); - v27 = _mm_mulhrs_epi16(in[5], stk1_9); - - v23 = _mm_mulhrs_epi16(in[3], stk1_14); - v24 = _mm_mulhrs_epi16(in[3], stk1_15); - - butterfly(v31, v16, (int)cospi_28_64, (int)cospi_4_64, &v17, &v30); - butterfly(v28, v19, -(int)cospi_4_64, (int)cospi_28_64, &v18, &v29); - butterfly(v27, v20, (int)cospi_12_64, (int)cospi_20_64, &v21, &v26); - butterfly(v24, v23, -(int)cospi_20_64, (int)cospi_12_64, &v22, &v25); - - u16 = _mm_add_epi16(v16, v19); - u17 = _mm_add_epi16(v17, v18); - u18 = _mm_sub_epi16(v17, v18); - u19 = _mm_sub_epi16(v16, v19); - u20 = _mm_sub_epi16(v23, v20); - u21 = _mm_sub_epi16(v22, v21); - u22 = _mm_add_epi16(v22, v21); - u23 = _mm_add_epi16(v23, v20); - u24 = _mm_add_epi16(v24, v27); - u27 = _mm_sub_epi16(v24, v27); - u25 = _mm_add_epi16(v25, v26); - u26 = _mm_sub_epi16(v25, v26); - u28 = _mm_sub_epi16(v31, v28); - u31 = _mm_add_epi16(v28, v31); - u29 = _mm_sub_epi16(v30, v29); - u30 = _mm_add_epi16(v29, v30); - - butterfly(u29, u18, (int)cospi_24_64, (int)cospi_8_64, &u18, &u29); - butterfly(u28, u19, (int)cospi_24_64, (int)cospi_8_64, &u19, &u28); - butterfly(u27, u20, -(int)cospi_8_64, (int)cospi_24_64, &u20, &u27); - butterfly(u26, u21, -(int)cospi_8_64, (int)cospi_24_64, &u21, &u26); - - stp1[16] = _mm_add_epi16(u16, u23); - stp1[23] = _mm_sub_epi16(u16, u23); - - stp1[17] = _mm_add_epi16(u17, u22); - stp1[22] = _mm_sub_epi16(u17, u22); - - stp1[18] = _mm_add_epi16(u18, u21); - stp1[21] = _mm_sub_epi16(u18, u21); - - stp1[19] = _mm_add_epi16(u19, u20); - stp1[20] = _mm_sub_epi16(u19, u20); - - stp1[24] = _mm_sub_epi16(u31, u24); - stp1[31] = _mm_add_epi16(u24, u31); - - stp1[25] = _mm_sub_epi16(u30, u25); - stp1[30] = _mm_add_epi16(u25, u30); - - stp1[26] = _mm_sub_epi16(u29, u26); - stp1[29] = _mm_add_epi16(u26, u29); - - stp1[27] = _mm_sub_epi16(u28, u27); - stp1[28] = _mm_add_epi16(u27, u28); - - butterfly(stp1[27], stp1[20], (int)cospi_16_64, (int)cospi_16_64, &stp1[20], - &stp1[27]); - butterfly(stp1[26], stp1[21], (int)cospi_16_64, (int)cospi_16_64, &stp1[21], - &stp1[26]); - butterfly(stp1[25], stp1[22], (int)cospi_16_64, (int)cospi_16_64, &stp1[22], - &stp1[25]); - butterfly(stp1[24], stp1[23], (int)cospi_16_64, (int)cospi_16_64, &stp1[23], - &stp1[24]); +// For each 8x32 block __m128i in[32], +// Input with odd index, 1, 3, 5, 7 +// output pixels: 16-23, 24-31 in __m128i out[32] +static INLINE void idct32_34_8x32_quarter_3_4( + const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { + __m128i step1[32]; + + // stage 1 + partial_butterfly_ssse3(in[1], (int)cospi_31_64, (int)cospi_1_64, &step1[16], + &step1[31]); + partial_butterfly_ssse3(in[7], -(int)cospi_25_64, (int)cospi_7_64, &step1[19], + &step1[28]); + partial_butterfly_ssse3(in[5], (int)cospi_27_64, (int)cospi_5_64, &step1[20], + &step1[27]); + partial_butterfly_ssse3(in[3], -(int)cospi_29_64, (int)cospi_3_64, &step1[23], + &step1[24]); + + // stage 3 + butterfly(step1[31], step1[16], (int)cospi_28_64, (int)cospi_4_64, &step1[17], + &step1[30]); + butterfly(step1[28], step1[19], -(int)cospi_4_64, (int)cospi_28_64, + &step1[18], &step1[29]); + butterfly(step1[27], step1[20], (int)cospi_12_64, (int)cospi_20_64, + &step1[21], &step1[26]); + butterfly(step1[24], step1[23], -(int)cospi_20_64, (int)cospi_12_64, + &step1[22], &step1[25]); + + idct32_8x32_quarter_3_4_stage_4_to_7(step1, out); +} + +void idct32_34_8x32_ssse3(const __m128i *const in /*in[32]*/, + __m128i *const out /*out[32]*/) { + __m128i temp[32]; + + idct32_34_8x32_quarter_1_2(in, temp); + idct32_34_8x32_quarter_3_4(in, temp); + // final stage + add_sub_butterfly(temp, out, 32); } // Only upper-left 8x8 has non-zero coeff void vpx_idct32x32_34_add_ssse3(const tran_low_t *input, uint8_t *dest, int stride) { - const __m128i final_rounding = _mm_set1_epi16(1 << 5); - __m128i in[32], col[32]; - __m128i stp1[32]; + __m128i io[32], col[32]; int i; // Load input data. Only need to load the top left 8x8 block. - in[0] = load_input_data8(input + 0 * 32); - in[1] = load_input_data8(input + 1 * 32); - in[2] = load_input_data8(input + 2 * 32); - in[3] = load_input_data8(input + 3 * 32); - in[4] = load_input_data8(input + 4 * 32); - in[5] = load_input_data8(input + 5 * 32); - in[6] = load_input_data8(input + 6 * 32); - in[7] = load_input_data8(input + 7 * 32); - - transpose_16bit_8x8(in, in); - idct32_34_first_half(in, stp1); - idct32_34_second_half(in, stp1); - - // 1_D: Store 32 intermediate results for each 8x32 block. - add_sub_butterfly(stp1, col, 32); + load_transpose_16bit_8x8(input, 32, io); + idct32_34_8x32_ssse3(io, col); + for (i = 0; i < 32; i += 8) { int j; - // Transpose 32x8 block to 8x32 block - transpose_16bit_8x8(col + i, in); - idct32_34_first_half(in, stp1); - idct32_34_second_half(in, stp1); + transpose_16bit_8x8(col + i, io); + idct32_34_8x32_ssse3(io, io); - // 2_D: Calculate the results and store them to destination. - add_sub_butterfly(stp1, in, 32); for (j = 0; j < 32; ++j) { - // Final rounding and shift - in[j] = _mm_adds_epi16(in[j], final_rounding); - in[j] = _mm_srai_epi16(in[j], 6); - recon_and_store(dest + j * stride, in[j]); + write_buffer_8x1(dest + j * stride, io[j]); } dest += 8; } } -// in0[16] represents the left 8x16 block -// in1[16] represents the right 8x16 block -static void load_buffer_16x16(const tran_low_t *input, __m128i *in0, - __m128i *in1) { - int i; - for (i = 0; i < 16; i++) { - in0[i] = load_input_data8(input); - in1[i] = load_input_data8(input + 8); - input += 32; - } -} - -// Group the coefficient calculation into smaller functions -// to prevent stack spillover: -// quarter_1: 0-7 -// quarter_2: 8-15 -// quarter_3_4: 16-23, 24-31 -static void idct32_8x32_135_quarter_1(const __m128i *in /*in[16]*/, - __m128i *out /*out[8]*/) { - __m128i u0, u1, u2, u3, u4, u5, u6, u7; - __m128i v0, v1, v2, v3, v4, v5, v6, v7; - - { - const __m128i stk4_0 = pair_set_epi16(2 * cospi_16_64, 2 * cospi_16_64); - const __m128i stk4_2 = pair_set_epi16(2 * cospi_24_64, 2 * cospi_24_64); - const __m128i stk4_3 = pair_set_epi16(2 * cospi_8_64, 2 * cospi_8_64); - u0 = _mm_mulhrs_epi16(in[0], stk4_0); - u2 = _mm_mulhrs_epi16(in[8], stk4_2); - u3 = _mm_mulhrs_epi16(in[8], stk4_3); - u1 = u0; - } - - v0 = _mm_add_epi16(u0, u3); - v1 = _mm_add_epi16(u1, u2); - v2 = _mm_sub_epi16(u1, u2); - v3 = _mm_sub_epi16(u0, u3); - - { - const __m128i stk3_0 = pair_set_epi16(2 * cospi_28_64, 2 * cospi_28_64); - const __m128i stk3_1 = pair_set_epi16(2 * cospi_4_64, 2 * cospi_4_64); - const __m128i stk3_2 = pair_set_epi16(-2 * cospi_20_64, -2 * cospi_20_64); - const __m128i stk3_3 = pair_set_epi16(2 * cospi_12_64, 2 * cospi_12_64); - u4 = _mm_mulhrs_epi16(in[4], stk3_0); - u7 = _mm_mulhrs_epi16(in[4], stk3_1); - u5 = _mm_mulhrs_epi16(in[12], stk3_2); - u6 = _mm_mulhrs_epi16(in[12], stk3_3); - } - - v4 = _mm_add_epi16(u4, u5); - v5 = _mm_sub_epi16(u4, u5); - v6 = _mm_sub_epi16(u7, u6); - v7 = _mm_add_epi16(u7, u6); - - butterfly(v6, v5, (int)cospi_16_64, (int)cospi_16_64, &v5, &v6); - - out[0] = _mm_add_epi16(v0, v7); - out[1] = _mm_add_epi16(v1, v6); - out[2] = _mm_add_epi16(v2, v5); - out[3] = _mm_add_epi16(v3, v4); - out[4] = _mm_sub_epi16(v3, v4); - out[5] = _mm_sub_epi16(v2, v5); - out[6] = _mm_sub_epi16(v1, v6); - out[7] = _mm_sub_epi16(v0, v7); +// For each 8x32 block __m128i in[32], +// Input with index, 0, 4, 8, 12 +// output pixels: 0-7 in __m128i out[32] +static INLINE void idct32_135_8x32_quarter_1(const __m128i *const in /*in[32]*/, + __m128i *const out /*out[8]*/) { + __m128i step1[8], step2[8]; + + // stage 3 + partial_butterfly_ssse3(in[4], (int)cospi_28_64, (int)cospi_4_64, &step1[4], + &step1[7]); + partial_butterfly_ssse3(in[12], -(int)cospi_20_64, (int)cospi_12_64, + &step1[5], &step1[6]); + + // stage 4 + step2[0] = partial_butterfly_cospi16_ssse3(in[0]); + partial_butterfly_ssse3(in[8], (int)cospi_24_64, (int)cospi_8_64, &step2[2], + &step2[3]); + step2[4] = _mm_add_epi16(step1[4], step1[5]); + step2[5] = _mm_sub_epi16(step1[4], step1[5]); + step2[6] = _mm_sub_epi16(step1[7], step1[6]); + step2[7] = _mm_add_epi16(step1[7], step1[6]); + + // stage 5 + step1[0] = _mm_add_epi16(step2[0], step2[3]); + step1[1] = _mm_add_epi16(step2[0], step2[2]); + step1[2] = _mm_sub_epi16(step2[0], step2[2]); + step1[3] = _mm_sub_epi16(step2[0], step2[3]); + step1[4] = step2[4]; + butterfly(step2[6], step2[5], (int)cospi_16_64, (int)cospi_16_64, &step1[5], + &step1[6]); + step1[7] = step2[7]; + + // stage 6 + out[0] = _mm_add_epi16(step1[0], step1[7]); + out[1] = _mm_add_epi16(step1[1], step1[6]); + out[2] = _mm_add_epi16(step1[2], step1[5]); + out[3] = _mm_add_epi16(step1[3], step1[4]); + out[4] = _mm_sub_epi16(step1[3], step1[4]); + out[5] = _mm_sub_epi16(step1[2], step1[5]); + out[6] = _mm_sub_epi16(step1[1], step1[6]); + out[7] = _mm_sub_epi16(step1[0], step1[7]); } -static void idct32_8x32_135_quarter_2(const __m128i *in /*in[16]*/, - __m128i *out /*out[8]*/) { - __m128i u8, u9, u10, u11, u12, u13, u14, u15; - __m128i v8, v9, v10, v11, v12, v13, v14, v15; - - { - const __m128i stk2_0 = pair_set_epi16(2 * cospi_30_64, 2 * cospi_30_64); - const __m128i stk2_1 = pair_set_epi16(2 * cospi_2_64, 2 * cospi_2_64); - const __m128i stk2_2 = pair_set_epi16(-2 * cospi_18_64, -2 * cospi_18_64); - const __m128i stk2_3 = pair_set_epi16(2 * cospi_14_64, 2 * cospi_14_64); - const __m128i stk2_4 = pair_set_epi16(2 * cospi_22_64, 2 * cospi_22_64); - const __m128i stk2_5 = pair_set_epi16(2 * cospi_10_64, 2 * cospi_10_64); - const __m128i stk2_6 = pair_set_epi16(-2 * cospi_26_64, -2 * cospi_26_64); - const __m128i stk2_7 = pair_set_epi16(2 * cospi_6_64, 2 * cospi_6_64); - u8 = _mm_mulhrs_epi16(in[2], stk2_0); - u15 = _mm_mulhrs_epi16(in[2], stk2_1); - u9 = _mm_mulhrs_epi16(in[14], stk2_2); - u14 = _mm_mulhrs_epi16(in[14], stk2_3); - u10 = _mm_mulhrs_epi16(in[10], stk2_4); - u13 = _mm_mulhrs_epi16(in[10], stk2_5); - u11 = _mm_mulhrs_epi16(in[6], stk2_6); - u12 = _mm_mulhrs_epi16(in[6], stk2_7); - } - - v8 = _mm_add_epi16(u8, u9); - v9 = _mm_sub_epi16(u8, u9); - v10 = _mm_sub_epi16(u11, u10); - v11 = _mm_add_epi16(u11, u10); - v12 = _mm_add_epi16(u12, u13); - v13 = _mm_sub_epi16(u12, u13); - v14 = _mm_sub_epi16(u15, u14); - v15 = _mm_add_epi16(u15, u14); - - butterfly(v14, v9, (int)cospi_24_64, (int)cospi_8_64, &v9, &v14); - butterfly(v13, v10, -(int)cospi_8_64, (int)cospi_24_64, &v10, &v13); - - out[0] = _mm_add_epi16(v8, v11); - out[1] = _mm_add_epi16(v9, v10); - out[2] = _mm_sub_epi16(v9, v10); - out[3] = _mm_sub_epi16(v8, v11); - out[4] = _mm_sub_epi16(v15, v12); - out[5] = _mm_sub_epi16(v14, v13); - out[6] = _mm_add_epi16(v14, v13); - out[7] = _mm_add_epi16(v15, v12); - - butterfly(out[5], out[2], (int)cospi_16_64, (int)cospi_16_64, &out[2], - &out[5]); - butterfly(out[4], out[3], (int)cospi_16_64, (int)cospi_16_64, &out[3], - &out[4]); +// For each 8x32 block __m128i in[32], +// Input with index, 2, 6, 10, 14 +// output pixels: 8-15 in __m128i out[32] +static INLINE void idct32_135_8x32_quarter_2(const __m128i *const in /*in[32]*/, + __m128i *const out /*out[16]*/) { + __m128i step1[16], step2[16]; + + // stage 2 + partial_butterfly_ssse3(in[2], (int)cospi_30_64, (int)cospi_2_64, &step2[8], + &step2[15]); + partial_butterfly_ssse3(in[14], -(int)cospi_18_64, (int)cospi_14_64, + &step2[9], &step2[14]); + partial_butterfly_ssse3(in[10], (int)cospi_22_64, (int)cospi_10_64, + &step2[10], &step2[13]); + partial_butterfly_ssse3(in[6], -(int)cospi_26_64, (int)cospi_6_64, &step2[11], + &step2[12]); + + // stage 3 + step1[8] = _mm_add_epi16(step2[8], step2[9]); + step1[9] = _mm_sub_epi16(step2[8], step2[9]); + step1[10] = _mm_sub_epi16(step2[11], step2[10]); + step1[11] = _mm_add_epi16(step2[11], step2[10]); + step1[12] = _mm_add_epi16(step2[12], step2[13]); + step1[13] = _mm_sub_epi16(step2[12], step2[13]); + step1[14] = _mm_sub_epi16(step2[15], step2[14]); + step1[15] = _mm_add_epi16(step2[15], step2[14]); + + idct32_8x32_quarter_2_stage_4_to_6(step1, out); } -// 8x32 block even indexed 8 inputs of in[16], -// output first half 16 to out[32] -static void idct32_8x32_quarter_1_2(const __m128i *in /*in[16]*/, - __m128i *out /*out[32]*/) { +static INLINE void idct32_135_8x32_quarter_1_2( + const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { __m128i temp[16]; - idct32_8x32_135_quarter_1(in, temp); - idct32_8x32_135_quarter_2(in, &temp[8]); + idct32_135_8x32_quarter_1(in, temp); + idct32_135_8x32_quarter_2(in, temp); + // stage 7 add_sub_butterfly(temp, out, 16); } -// 8x32 block odd indexed 8 inputs of in[16], -// output second half 16 to out[32] -static void idct32_8x32_quarter_3_4(const __m128i *in /*in[16]*/, - __m128i *out /*out[32]*/) { - __m128i v16, v17, v18, v19, v20, v21, v22, v23; - __m128i v24, v25, v26, v27, v28, v29, v30, v31; - __m128i u16, u17, u18, u19, u20, u21, u22, u23; - __m128i u24, u25, u26, u27, u28, u29, u30, u31; - - { - const __m128i stk1_0 = pair_set_epi16(2 * cospi_31_64, 2 * cospi_31_64); - const __m128i stk1_1 = pair_set_epi16(2 * cospi_1_64, 2 * cospi_1_64); - const __m128i stk1_2 = pair_set_epi16(-2 * cospi_17_64, -2 * cospi_17_64); - const __m128i stk1_3 = pair_set_epi16(2 * cospi_15_64, 2 * cospi_15_64); - - const __m128i stk1_4 = pair_set_epi16(2 * cospi_23_64, 2 * cospi_23_64); - const __m128i stk1_5 = pair_set_epi16(2 * cospi_9_64, 2 * cospi_9_64); - const __m128i stk1_6 = pair_set_epi16(-2 * cospi_25_64, -2 * cospi_25_64); - const __m128i stk1_7 = pair_set_epi16(2 * cospi_7_64, 2 * cospi_7_64); - const __m128i stk1_8 = pair_set_epi16(2 * cospi_27_64, 2 * cospi_27_64); - const __m128i stk1_9 = pair_set_epi16(2 * cospi_5_64, 2 * cospi_5_64); - const __m128i stk1_10 = pair_set_epi16(-2 * cospi_21_64, -2 * cospi_21_64); - const __m128i stk1_11 = pair_set_epi16(2 * cospi_11_64, 2 * cospi_11_64); - - const __m128i stk1_12 = pair_set_epi16(2 * cospi_19_64, 2 * cospi_19_64); - const __m128i stk1_13 = pair_set_epi16(2 * cospi_13_64, 2 * cospi_13_64); - const __m128i stk1_14 = pair_set_epi16(-2 * cospi_29_64, -2 * cospi_29_64); - const __m128i stk1_15 = pair_set_epi16(2 * cospi_3_64, 2 * cospi_3_64); - u16 = _mm_mulhrs_epi16(in[1], stk1_0); - u31 = _mm_mulhrs_epi16(in[1], stk1_1); - u17 = _mm_mulhrs_epi16(in[15], stk1_2); - u30 = _mm_mulhrs_epi16(in[15], stk1_3); - - u18 = _mm_mulhrs_epi16(in[9], stk1_4); - u29 = _mm_mulhrs_epi16(in[9], stk1_5); - u19 = _mm_mulhrs_epi16(in[7], stk1_6); - u28 = _mm_mulhrs_epi16(in[7], stk1_7); - - u20 = _mm_mulhrs_epi16(in[5], stk1_8); - u27 = _mm_mulhrs_epi16(in[5], stk1_9); - u21 = _mm_mulhrs_epi16(in[11], stk1_10); - u26 = _mm_mulhrs_epi16(in[11], stk1_11); - - u22 = _mm_mulhrs_epi16(in[13], stk1_12); - u25 = _mm_mulhrs_epi16(in[13], stk1_13); - u23 = _mm_mulhrs_epi16(in[3], stk1_14); - u24 = _mm_mulhrs_epi16(in[3], stk1_15); - } - - v16 = _mm_add_epi16(u16, u17); - v17 = _mm_sub_epi16(u16, u17); - v18 = _mm_sub_epi16(u19, u18); - v19 = _mm_add_epi16(u19, u18); - - v20 = _mm_add_epi16(u20, u21); - v21 = _mm_sub_epi16(u20, u21); - v22 = _mm_sub_epi16(u23, u22); - v23 = _mm_add_epi16(u23, u22); - - v24 = _mm_add_epi16(u24, u25); - v25 = _mm_sub_epi16(u24, u25); - v26 = _mm_sub_epi16(u27, u26); - v27 = _mm_add_epi16(u27, u26); - - v28 = _mm_add_epi16(u28, u29); - v29 = _mm_sub_epi16(u28, u29); - v30 = _mm_sub_epi16(u31, u30); - v31 = _mm_add_epi16(u31, u30); - - butterfly(v30, v17, (int)cospi_28_64, (int)cospi_4_64, &v17, &v30); - butterfly(v29, v18, -(int)cospi_4_64, (int)cospi_28_64, &v18, &v29); - butterfly(v26, v21, (int)cospi_12_64, (int)cospi_20_64, &v21, &v26); - butterfly(v25, v22, -(int)cospi_20_64, (int)cospi_12_64, &v22, &v25); - - u16 = _mm_add_epi16(v16, v19); - u17 = _mm_add_epi16(v17, v18); - u18 = _mm_sub_epi16(v17, v18); - u19 = _mm_sub_epi16(v16, v19); - u20 = _mm_sub_epi16(v23, v20); - u21 = _mm_sub_epi16(v22, v21); - u22 = _mm_add_epi16(v22, v21); - u23 = _mm_add_epi16(v23, v20); - - u24 = _mm_add_epi16(v24, v27); - u25 = _mm_add_epi16(v25, v26); - u26 = _mm_sub_epi16(v25, v26); - u27 = _mm_sub_epi16(v24, v27); - u28 = _mm_sub_epi16(v31, v28); - u29 = _mm_sub_epi16(v30, v29); - u30 = _mm_add_epi16(v29, v30); - u31 = _mm_add_epi16(v28, v31); - - butterfly(u29, u18, (int)cospi_24_64, (int)cospi_8_64, &u18, &u29); - butterfly(u28, u19, (int)cospi_24_64, (int)cospi_8_64, &u19, &u28); - butterfly(u27, u20, -(int)cospi_8_64, (int)cospi_24_64, &u20, &u27); - butterfly(u26, u21, -(int)cospi_8_64, (int)cospi_24_64, &u21, &u26); - - out[0] = _mm_add_epi16(u16, u23); - out[1] = _mm_add_epi16(u17, u22); - out[2] = _mm_add_epi16(u18, u21); - out[3] = _mm_add_epi16(u19, u20); - v20 = _mm_sub_epi16(u19, u20); - v21 = _mm_sub_epi16(u18, u21); - v22 = _mm_sub_epi16(u17, u22); - v23 = _mm_sub_epi16(u16, u23); - - v24 = _mm_sub_epi16(u31, u24); - v25 = _mm_sub_epi16(u30, u25); - v26 = _mm_sub_epi16(u29, u26); - v27 = _mm_sub_epi16(u28, u27); - out[12] = _mm_add_epi16(u27, u28); - out[13] = _mm_add_epi16(u26, u29); - out[14] = _mm_add_epi16(u25, u30); - out[15] = _mm_add_epi16(u24, u31); - - butterfly(v27, v20, (int)cospi_16_64, (int)cospi_16_64, &out[4], &out[11]); - butterfly(v26, v21, (int)cospi_16_64, (int)cospi_16_64, &out[5], &out[10]); - butterfly(v25, v22, (int)cospi_16_64, (int)cospi_16_64, &out[6], &out[9]); - butterfly(v24, v23, (int)cospi_16_64, (int)cospi_16_64, &out[7], &out[8]); -} - -// 8x16 block, input __m128i in[16], output __m128i in[32] -static void idct32_8x32_135(__m128i *in /*in[32]*/) { - __m128i out[32]; - idct32_8x32_quarter_1_2(in, out); - idct32_8x32_quarter_3_4(in, &out[16]); - add_sub_butterfly(out, in, 32); -} - -static INLINE void recon_and_store_ssse3(__m128i *in0, __m128i *in1, - uint8_t *dest, int stride) { - store_buffer_8x32(in0, dest, stride); - store_buffer_8x32(in1, dest + 8, stride); +// For each 8x32 block __m128i in[32], +// Input with odd index, +// 1, 3, 5, 7, 9, 11, 13, 15 +// output pixels: 16-23, 24-31 in __m128i out[32] +static INLINE void idct32_135_8x32_quarter_3_4( + const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { + __m128i step1[32], step2[32]; + + // stage 1 + partial_butterfly_ssse3(in[1], (int)cospi_31_64, (int)cospi_1_64, &step1[16], + &step1[31]); + partial_butterfly_ssse3(in[15], -(int)cospi_17_64, (int)cospi_15_64, + &step1[17], &step1[30]); + partial_butterfly_ssse3(in[9], (int)cospi_23_64, (int)cospi_9_64, &step1[18], + &step1[29]); + partial_butterfly_ssse3(in[7], -(int)cospi_25_64, (int)cospi_7_64, &step1[19], + &step1[28]); + + partial_butterfly_ssse3(in[5], (int)cospi_27_64, (int)cospi_5_64, &step1[20], + &step1[27]); + partial_butterfly_ssse3(in[11], -(int)cospi_21_64, (int)cospi_11_64, + &step1[21], &step1[26]); + + partial_butterfly_ssse3(in[13], (int)cospi_19_64, (int)cospi_13_64, + &step1[22], &step1[25]); + partial_butterfly_ssse3(in[3], -(int)cospi_29_64, (int)cospi_3_64, &step1[23], + &step1[24]); + + // stage 2 + step2[16] = _mm_add_epi16(step1[16], step1[17]); + step2[17] = _mm_sub_epi16(step1[16], step1[17]); + step2[18] = _mm_sub_epi16(step1[19], step1[18]); + step2[19] = _mm_add_epi16(step1[19], step1[18]); + step2[20] = _mm_add_epi16(step1[20], step1[21]); + step2[21] = _mm_sub_epi16(step1[20], step1[21]); + step2[22] = _mm_sub_epi16(step1[23], step1[22]); + step2[23] = _mm_add_epi16(step1[23], step1[22]); + + step2[24] = _mm_add_epi16(step1[24], step1[25]); + step2[25] = _mm_sub_epi16(step1[24], step1[25]); + step2[26] = _mm_sub_epi16(step1[27], step1[26]); + step2[27] = _mm_add_epi16(step1[27], step1[26]); + step2[28] = _mm_add_epi16(step1[28], step1[29]); + step2[29] = _mm_sub_epi16(step1[28], step1[29]); + step2[30] = _mm_sub_epi16(step1[31], step1[30]); + step2[31] = _mm_add_epi16(step1[31], step1[30]); + + // stage 3 + step1[16] = step2[16]; + step1[31] = step2[31]; + butterfly(step2[30], step2[17], (int)cospi_28_64, (int)cospi_4_64, &step1[17], + &step1[30]); + butterfly(step2[29], step2[18], -(int)cospi_4_64, (int)cospi_28_64, + &step1[18], &step1[29]); + step1[19] = step2[19]; + step1[20] = step2[20]; + butterfly(step2[26], step2[21], (int)cospi_12_64, (int)cospi_20_64, + &step1[21], &step1[26]); + butterfly(step2[25], step2[22], -(int)cospi_20_64, (int)cospi_12_64, + &step1[22], &step1[25]); + step1[23] = step2[23]; + step1[24] = step2[24]; + step1[27] = step2[27]; + step1[28] = step2[28]; + + idct32_8x32_quarter_3_4_stage_4_to_7(step1, out); } -static INLINE void idct32_135(__m128i *col0, __m128i *col1) { - idct32_8x32_135(col0); - idct32_8x32_135(col1); -} - -typedef enum { left_16, right_16 } ColsIndicator; - -static void transpose_and_copy_16x16(__m128i *in0, __m128i *in1, __m128i *store, - ColsIndicator cols) { - switch (cols) { - case left_16: { - int i; - transpose_16bit_16x16(in0, in1); - for (i = 0; i < 16; ++i) { - store[i] = in0[16 + i]; - store[16 + i] = in1[16 + i]; - } - break; - } - case right_16: { - transpose_16bit_8x8(store, in0); - transpose_16bit_8x8(&store[8], in1); - transpose_16bit_8x8(&store[16], &in0[8]); - transpose_16bit_8x8(&store[24], &in1[8]); - break; - } - default: { assert(0); } - } +void idct32_135_8x32_ssse3(const __m128i *const in /*in[32]*/, + __m128i *const out /*out[32]*/) { + __m128i temp[32]; + idct32_135_8x32_quarter_1_2(in, temp); + idct32_135_8x32_quarter_3_4(in, temp); + // final stage + add_sub_butterfly(temp, out, 32); } -// Only upper-left 16x16 has non-zero coeff void vpx_idct32x32_135_add_ssse3(const tran_low_t *input, uint8_t *dest, int stride) { - // Each array represents an 8x32 block - __m128i col0[32], col1[32]; - // This array represents a 16x16 block - __m128i temp[32]; - - // Load input data. Only need to load the top left 16x16 block. - load_buffer_16x16(input, col0, col1); - - // columns - transpose_16bit_16x16(col0, col1); - idct32_135(col0, col1); + __m128i col[2][32], io[32]; + int i; // rows - transpose_and_copy_16x16(col0, col1, temp, left_16); - idct32_135(col0, col1); - recon_and_store_ssse3(col0, col1, dest, stride); + for (i = 0; i < 2; i++) { + load_transpose_16bit_8x8(&input[0], 32, &io[0]); + load_transpose_16bit_8x8(&input[8], 32, &io[8]); + idct32_135_8x32_ssse3(io, col[i]); + input += 32 << 3; + } - transpose_and_copy_16x16(col0, col1, temp, right_16); - idct32_135(col0, col1); - recon_and_store_ssse3(col0, col1, dest + 16, stride); + // columns + for (i = 0; i < 32; i += 8) { + transpose_16bit_8x8(col[0] + i, io); + transpose_16bit_8x8(col[1] + i, io + 8); + idct32_135_8x32_ssse3(io, io); + store_buffer_8x32(io, dest, stride); + dest += 8; + } } |