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author | Jingning Han <jingning@google.com> | 2015-08-06 21:14:07 -0700 |
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committer | Jingning Han <jingning@google.com> | 2015-08-11 21:24:08 -0700 |
commit | 54d66ef165a86dd23ca4e5e645288f9ef63b7bb0 (patch) | |
tree | 05916e9655ce4eb8b7e731bf6a228b2d86f72990 /vp10/encoder/dct.c | |
parent | b522d1cdffdc060b6bef9fceef9b316316b05d9c (diff) | |
download | libvpx-54d66ef165a86dd23ca4e5e645288f9ef63b7bb0.tar libvpx-54d66ef165a86dd23ca4e5e645288f9ef63b7bb0.tar.gz libvpx-54d66ef165a86dd23ca4e5e645288f9ef63b7bb0.tar.bz2 libvpx-54d66ef165a86dd23ca4e5e645288f9ef63b7bb0.zip |
Remove vp9_ prefix from vp10 files
Remove the vp9_ prefix from vp10 file names.
Change-Id: I513a211b286a57d6126fc1b0fbfd6405120014f1
Diffstat (limited to 'vp10/encoder/dct.c')
-rw-r--r-- | vp10/encoder/dct.c | 811 |
1 files changed, 811 insertions, 0 deletions
diff --git a/vp10/encoder/dct.c b/vp10/encoder/dct.c new file mode 100644 index 000000000..0581b1455 --- /dev/null +++ b/vp10/encoder/dct.c @@ -0,0 +1,811 @@ +/* + * Copyright (c) 2010 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 <assert.h> +#include <math.h> + +#include "./vp10_rtcd.h" +#include "./vpx_config.h" +#include "./vpx_dsp_rtcd.h" + +#include "vp10/common/blockd.h" +#include "vp10/common/idct.h" +#include "vp10/common/systemdependent.h" +#include "vpx_dsp/fwd_txfm.h" +#include "vpx_ports/mem.h" + +static void fdct4(const tran_low_t *input, tran_low_t *output) { + tran_high_t step[4]; + tran_high_t temp1, temp2; + + step[0] = input[0] + input[3]; + step[1] = input[1] + input[2]; + step[2] = input[1] - input[2]; + step[3] = input[0] - input[3]; + + temp1 = (step[0] + step[1]) * cospi_16_64; + temp2 = (step[0] - step[1]) * cospi_16_64; + output[0] = (tran_low_t)fdct_round_shift(temp1); + output[2] = (tran_low_t)fdct_round_shift(temp2); + temp1 = step[2] * cospi_24_64 + step[3] * cospi_8_64; + temp2 = -step[2] * cospi_8_64 + step[3] * cospi_24_64; + output[1] = (tran_low_t)fdct_round_shift(temp1); + output[3] = (tran_low_t)fdct_round_shift(temp2); +} + +static void fdct8(const tran_low_t *input, tran_low_t *output) { + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16 + tran_high_t t0, t1, t2, t3; // needs32 + tran_high_t x0, x1, x2, x3; // canbe16 + + // stage 1 + s0 = input[0] + input[7]; + s1 = input[1] + input[6]; + s2 = input[2] + input[5]; + s3 = input[3] + input[4]; + s4 = input[3] - input[4]; + s5 = input[2] - input[5]; + s6 = input[1] - input[6]; + s7 = input[0] - input[7]; + + // fdct4(step, step); + x0 = s0 + s3; + x1 = s1 + s2; + x2 = s1 - s2; + x3 = s0 - s3; + t0 = (x0 + x1) * cospi_16_64; + t1 = (x0 - x1) * cospi_16_64; + t2 = x2 * cospi_24_64 + x3 * cospi_8_64; + t3 = -x2 * cospi_8_64 + x3 * cospi_24_64; + output[0] = (tran_low_t)fdct_round_shift(t0); + output[2] = (tran_low_t)fdct_round_shift(t2); + output[4] = (tran_low_t)fdct_round_shift(t1); + output[6] = (tran_low_t)fdct_round_shift(t3); + + // Stage 2 + t0 = (s6 - s5) * cospi_16_64; + t1 = (s6 + s5) * cospi_16_64; + t2 = (tran_low_t)fdct_round_shift(t0); + t3 = (tran_low_t)fdct_round_shift(t1); + + // Stage 3 + x0 = s4 + t2; + x1 = s4 - t2; + x2 = s7 - t3; + x3 = s7 + t3; + + // Stage 4 + t0 = x0 * cospi_28_64 + x3 * cospi_4_64; + t1 = x1 * cospi_12_64 + x2 * cospi_20_64; + t2 = x2 * cospi_12_64 + x1 * -cospi_20_64; + t3 = x3 * cospi_28_64 + x0 * -cospi_4_64; + output[1] = (tran_low_t)fdct_round_shift(t0); + output[3] = (tran_low_t)fdct_round_shift(t2); + output[5] = (tran_low_t)fdct_round_shift(t1); + output[7] = (tran_low_t)fdct_round_shift(t3); +} + +static void fdct16(const tran_low_t in[16], tran_low_t out[16]) { + tran_high_t step1[8]; // canbe16 + tran_high_t step2[8]; // canbe16 + tran_high_t step3[8]; // canbe16 + tran_high_t input[8]; // canbe16 + tran_high_t temp1, temp2; // needs32 + + // step 1 + input[0] = in[0] + in[15]; + input[1] = in[1] + in[14]; + input[2] = in[2] + in[13]; + input[3] = in[3] + in[12]; + input[4] = in[4] + in[11]; + input[5] = in[5] + in[10]; + input[6] = in[6] + in[ 9]; + input[7] = in[7] + in[ 8]; + + step1[0] = in[7] - in[ 8]; + step1[1] = in[6] - in[ 9]; + step1[2] = in[5] - in[10]; + step1[3] = in[4] - in[11]; + step1[4] = in[3] - in[12]; + step1[5] = in[2] - in[13]; + step1[6] = in[1] - in[14]; + step1[7] = in[0] - in[15]; + + // fdct8(step, step); + { + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16 + tran_high_t t0, t1, t2, t3; // needs32 + tran_high_t x0, x1, x2, x3; // canbe16 + + // stage 1 + s0 = input[0] + input[7]; + s1 = input[1] + input[6]; + s2 = input[2] + input[5]; + s3 = input[3] + input[4]; + s4 = input[3] - input[4]; + s5 = input[2] - input[5]; + s6 = input[1] - input[6]; + s7 = input[0] - input[7]; + + // fdct4(step, step); + x0 = s0 + s3; + x1 = s1 + s2; + x2 = s1 - s2; + x3 = s0 - s3; + t0 = (x0 + x1) * cospi_16_64; + t1 = (x0 - x1) * cospi_16_64; + t2 = x3 * cospi_8_64 + x2 * cospi_24_64; + t3 = x3 * cospi_24_64 - x2 * cospi_8_64; + out[0] = (tran_low_t)fdct_round_shift(t0); + out[4] = (tran_low_t)fdct_round_shift(t2); + out[8] = (tran_low_t)fdct_round_shift(t1); + out[12] = (tran_low_t)fdct_round_shift(t3); + + // Stage 2 + t0 = (s6 - s5) * cospi_16_64; + t1 = (s6 + s5) * cospi_16_64; + t2 = fdct_round_shift(t0); + t3 = fdct_round_shift(t1); + + // Stage 3 + x0 = s4 + t2; + x1 = s4 - t2; + x2 = s7 - t3; + x3 = s7 + t3; + + // Stage 4 + t0 = x0 * cospi_28_64 + x3 * cospi_4_64; + t1 = x1 * cospi_12_64 + x2 * cospi_20_64; + t2 = x2 * cospi_12_64 + x1 * -cospi_20_64; + t3 = x3 * cospi_28_64 + x0 * -cospi_4_64; + out[2] = (tran_low_t)fdct_round_shift(t0); + out[6] = (tran_low_t)fdct_round_shift(t2); + out[10] = (tran_low_t)fdct_round_shift(t1); + out[14] = (tran_low_t)fdct_round_shift(t3); + } + + // step 2 + temp1 = (step1[5] - step1[2]) * cospi_16_64; + temp2 = (step1[4] - step1[3]) * cospi_16_64; + step2[2] = fdct_round_shift(temp1); + step2[3] = fdct_round_shift(temp2); + temp1 = (step1[4] + step1[3]) * cospi_16_64; + temp2 = (step1[5] + step1[2]) * cospi_16_64; + step2[4] = fdct_round_shift(temp1); + step2[5] = fdct_round_shift(temp2); + + // step 3 + step3[0] = step1[0] + step2[3]; + step3[1] = step1[1] + step2[2]; + step3[2] = step1[1] - step2[2]; + step3[3] = step1[0] - step2[3]; + step3[4] = step1[7] - step2[4]; + step3[5] = step1[6] - step2[5]; + step3[6] = step1[6] + step2[5]; + step3[7] = step1[7] + step2[4]; + + // step 4 + temp1 = step3[1] * -cospi_8_64 + step3[6] * cospi_24_64; + temp2 = step3[2] * cospi_24_64 + step3[5] * cospi_8_64; + step2[1] = fdct_round_shift(temp1); + step2[2] = fdct_round_shift(temp2); + temp1 = step3[2] * cospi_8_64 - step3[5] * cospi_24_64; + temp2 = step3[1] * cospi_24_64 + step3[6] * cospi_8_64; + step2[5] = fdct_round_shift(temp1); + step2[6] = fdct_round_shift(temp2); + + // step 5 + step1[0] = step3[0] + step2[1]; + step1[1] = step3[0] - step2[1]; + step1[2] = step3[3] + step2[2]; + step1[3] = step3[3] - step2[2]; + step1[4] = step3[4] - step2[5]; + step1[5] = step3[4] + step2[5]; + step1[6] = step3[7] - step2[6]; + step1[7] = step3[7] + step2[6]; + + // step 6 + temp1 = step1[0] * cospi_30_64 + step1[7] * cospi_2_64; + temp2 = step1[1] * cospi_14_64 + step1[6] * cospi_18_64; + out[1] = (tran_low_t)fdct_round_shift(temp1); + out[9] = (tran_low_t)fdct_round_shift(temp2); + + temp1 = step1[2] * cospi_22_64 + step1[5] * cospi_10_64; + temp2 = step1[3] * cospi_6_64 + step1[4] * cospi_26_64; + out[5] = (tran_low_t)fdct_round_shift(temp1); + out[13] = (tran_low_t)fdct_round_shift(temp2); + + temp1 = step1[3] * -cospi_26_64 + step1[4] * cospi_6_64; + temp2 = step1[2] * -cospi_10_64 + step1[5] * cospi_22_64; + out[3] = (tran_low_t)fdct_round_shift(temp1); + out[11] = (tran_low_t)fdct_round_shift(temp2); + + temp1 = step1[1] * -cospi_18_64 + step1[6] * cospi_14_64; + temp2 = step1[0] * -cospi_2_64 + step1[7] * cospi_30_64; + out[7] = (tran_low_t)fdct_round_shift(temp1); + out[15] = (tran_low_t)fdct_round_shift(temp2); +} + +static void fadst4(const tran_low_t *input, tran_low_t *output) { + tran_high_t x0, x1, x2, x3; + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; + + x0 = input[0]; + x1 = input[1]; + x2 = input[2]; + x3 = input[3]; + + if (!(x0 | x1 | x2 | x3)) { + output[0] = output[1] = output[2] = output[3] = 0; + return; + } + + s0 = sinpi_1_9 * x0; + s1 = sinpi_4_9 * x0; + s2 = sinpi_2_9 * x1; + s3 = sinpi_1_9 * x1; + s4 = sinpi_3_9 * x2; + s5 = sinpi_4_9 * x3; + s6 = sinpi_2_9 * x3; + s7 = x0 + x1 - x3; + + x0 = s0 + s2 + s5; + x1 = sinpi_3_9 * s7; + x2 = s1 - s3 + s6; + x3 = s4; + + s0 = x0 + x3; + s1 = x1; + s2 = x2 - x3; + s3 = x2 - x0 + x3; + + // 1-D transform scaling factor is sqrt(2). + output[0] = (tran_low_t)fdct_round_shift(s0); + output[1] = (tran_low_t)fdct_round_shift(s1); + output[2] = (tran_low_t)fdct_round_shift(s2); + output[3] = (tran_low_t)fdct_round_shift(s3); +} + +static void fadst8(const tran_low_t *input, tran_low_t *output) { + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; + + tran_high_t x0 = input[7]; + tran_high_t x1 = input[0]; + tran_high_t x2 = input[5]; + tran_high_t x3 = input[2]; + tran_high_t x4 = input[3]; + tran_high_t x5 = input[4]; + tran_high_t x6 = input[1]; + tran_high_t x7 = input[6]; + + // stage 1 + s0 = cospi_2_64 * x0 + cospi_30_64 * x1; + s1 = cospi_30_64 * x0 - cospi_2_64 * x1; + s2 = cospi_10_64 * x2 + cospi_22_64 * x3; + s3 = cospi_22_64 * x2 - cospi_10_64 * x3; + s4 = cospi_18_64 * x4 + cospi_14_64 * x5; + s5 = cospi_14_64 * x4 - cospi_18_64 * x5; + s6 = cospi_26_64 * x6 + cospi_6_64 * x7; + s7 = cospi_6_64 * x6 - cospi_26_64 * x7; + + x0 = fdct_round_shift(s0 + s4); + x1 = fdct_round_shift(s1 + s5); + x2 = fdct_round_shift(s2 + s6); + x3 = fdct_round_shift(s3 + s7); + x4 = fdct_round_shift(s0 - s4); + x5 = fdct_round_shift(s1 - s5); + x6 = fdct_round_shift(s2 - s6); + x7 = fdct_round_shift(s3 - s7); + + // stage 2 + s0 = x0; + s1 = x1; + s2 = x2; + s3 = x3; + s4 = cospi_8_64 * x4 + cospi_24_64 * x5; + s5 = cospi_24_64 * x4 - cospi_8_64 * x5; + s6 = - cospi_24_64 * x6 + cospi_8_64 * x7; + s7 = cospi_8_64 * x6 + cospi_24_64 * x7; + + x0 = s0 + s2; + x1 = s1 + s3; + x2 = s0 - s2; + x3 = s1 - s3; + x4 = fdct_round_shift(s4 + s6); + x5 = fdct_round_shift(s5 + s7); + x6 = fdct_round_shift(s4 - s6); + x7 = fdct_round_shift(s5 - s7); + + // stage 3 + s2 = cospi_16_64 * (x2 + x3); + s3 = cospi_16_64 * (x2 - x3); + s6 = cospi_16_64 * (x6 + x7); + s7 = cospi_16_64 * (x6 - x7); + + x2 = fdct_round_shift(s2); + x3 = fdct_round_shift(s3); + x6 = fdct_round_shift(s6); + x7 = fdct_round_shift(s7); + + output[0] = (tran_low_t)x0; + output[1] = (tran_low_t)-x4; + output[2] = (tran_low_t)x6; + output[3] = (tran_low_t)-x2; + output[4] = (tran_low_t)x3; + output[5] = (tran_low_t)-x7; + output[6] = (tran_low_t)x5; + output[7] = (tran_low_t)-x1; +} + +static void fadst16(const tran_low_t *input, tran_low_t *output) { + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7, s8; + tran_high_t s9, s10, s11, s12, s13, s14, s15; + + tran_high_t x0 = input[15]; + tran_high_t x1 = input[0]; + tran_high_t x2 = input[13]; + tran_high_t x3 = input[2]; + tran_high_t x4 = input[11]; + tran_high_t x5 = input[4]; + tran_high_t x6 = input[9]; + tran_high_t x7 = input[6]; + tran_high_t x8 = input[7]; + tran_high_t x9 = input[8]; + tran_high_t x10 = input[5]; + tran_high_t x11 = input[10]; + tran_high_t x12 = input[3]; + tran_high_t x13 = input[12]; + tran_high_t x14 = input[1]; + tran_high_t x15 = input[14]; + + // stage 1 + s0 = x0 * cospi_1_64 + x1 * cospi_31_64; + s1 = x0 * cospi_31_64 - x1 * cospi_1_64; + s2 = x2 * cospi_5_64 + x3 * cospi_27_64; + s3 = x2 * cospi_27_64 - x3 * cospi_5_64; + s4 = x4 * cospi_9_64 + x5 * cospi_23_64; + s5 = x4 * cospi_23_64 - x5 * cospi_9_64; + s6 = x6 * cospi_13_64 + x7 * cospi_19_64; + s7 = x6 * cospi_19_64 - x7 * cospi_13_64; + s8 = x8 * cospi_17_64 + x9 * cospi_15_64; + s9 = x8 * cospi_15_64 - x9 * cospi_17_64; + s10 = x10 * cospi_21_64 + x11 * cospi_11_64; + s11 = x10 * cospi_11_64 - x11 * cospi_21_64; + s12 = x12 * cospi_25_64 + x13 * cospi_7_64; + s13 = x12 * cospi_7_64 - x13 * cospi_25_64; + s14 = x14 * cospi_29_64 + x15 * cospi_3_64; + s15 = x14 * cospi_3_64 - x15 * cospi_29_64; + + x0 = fdct_round_shift(s0 + s8); + x1 = fdct_round_shift(s1 + s9); + x2 = fdct_round_shift(s2 + s10); + x3 = fdct_round_shift(s3 + s11); + x4 = fdct_round_shift(s4 + s12); + x5 = fdct_round_shift(s5 + s13); + x6 = fdct_round_shift(s6 + s14); + x7 = fdct_round_shift(s7 + s15); + x8 = fdct_round_shift(s0 - s8); + x9 = fdct_round_shift(s1 - s9); + x10 = fdct_round_shift(s2 - s10); + x11 = fdct_round_shift(s3 - s11); + x12 = fdct_round_shift(s4 - s12); + x13 = fdct_round_shift(s5 - s13); + x14 = fdct_round_shift(s6 - s14); + x15 = fdct_round_shift(s7 - s15); + + // stage 2 + s0 = x0; + s1 = x1; + s2 = x2; + s3 = x3; + s4 = x4; + s5 = x5; + s6 = x6; + s7 = x7; + s8 = x8 * cospi_4_64 + x9 * cospi_28_64; + s9 = x8 * cospi_28_64 - x9 * cospi_4_64; + s10 = x10 * cospi_20_64 + x11 * cospi_12_64; + s11 = x10 * cospi_12_64 - x11 * cospi_20_64; + s12 = - x12 * cospi_28_64 + x13 * cospi_4_64; + s13 = x12 * cospi_4_64 + x13 * cospi_28_64; + s14 = - x14 * cospi_12_64 + x15 * cospi_20_64; + s15 = x14 * cospi_20_64 + x15 * cospi_12_64; + + x0 = s0 + s4; + x1 = s1 + s5; + x2 = s2 + s6; + x3 = s3 + s7; + x4 = s0 - s4; + x5 = s1 - s5; + x6 = s2 - s6; + x7 = s3 - s7; + x8 = fdct_round_shift(s8 + s12); + x9 = fdct_round_shift(s9 + s13); + x10 = fdct_round_shift(s10 + s14); + x11 = fdct_round_shift(s11 + s15); + x12 = fdct_round_shift(s8 - s12); + x13 = fdct_round_shift(s9 - s13); + x14 = fdct_round_shift(s10 - s14); + x15 = fdct_round_shift(s11 - s15); + + // stage 3 + s0 = x0; + s1 = x1; + s2 = x2; + s3 = x3; + s4 = x4 * cospi_8_64 + x5 * cospi_24_64; + s5 = x4 * cospi_24_64 - x5 * cospi_8_64; + s6 = - x6 * cospi_24_64 + x7 * cospi_8_64; + s7 = x6 * cospi_8_64 + x7 * cospi_24_64; + s8 = x8; + s9 = x9; + s10 = x10; + s11 = x11; + s12 = x12 * cospi_8_64 + x13 * cospi_24_64; + s13 = x12 * cospi_24_64 - x13 * cospi_8_64; + s14 = - x14 * cospi_24_64 + x15 * cospi_8_64; + s15 = x14 * cospi_8_64 + x15 * cospi_24_64; + + x0 = s0 + s2; + x1 = s1 + s3; + x2 = s0 - s2; + x3 = s1 - s3; + x4 = fdct_round_shift(s4 + s6); + x5 = fdct_round_shift(s5 + s7); + x6 = fdct_round_shift(s4 - s6); + x7 = fdct_round_shift(s5 - s7); + x8 = s8 + s10; + x9 = s9 + s11; + x10 = s8 - s10; + x11 = s9 - s11; + x12 = fdct_round_shift(s12 + s14); + x13 = fdct_round_shift(s13 + s15); + x14 = fdct_round_shift(s12 - s14); + x15 = fdct_round_shift(s13 - s15); + + // stage 4 + s2 = (- cospi_16_64) * (x2 + x3); + s3 = cospi_16_64 * (x2 - x3); + s6 = cospi_16_64 * (x6 + x7); + s7 = cospi_16_64 * (- x6 + x7); + s10 = cospi_16_64 * (x10 + x11); + s11 = cospi_16_64 * (- x10 + x11); + s14 = (- cospi_16_64) * (x14 + x15); + s15 = cospi_16_64 * (x14 - x15); + + x2 = fdct_round_shift(s2); + x3 = fdct_round_shift(s3); + x6 = fdct_round_shift(s6); + x7 = fdct_round_shift(s7); + x10 = fdct_round_shift(s10); + x11 = fdct_round_shift(s11); + x14 = fdct_round_shift(s14); + x15 = fdct_round_shift(s15); + + output[0] = (tran_low_t)x0; + output[1] = (tran_low_t)-x8; + output[2] = (tran_low_t)x12; + output[3] = (tran_low_t)-x4; + output[4] = (tran_low_t)x6; + output[5] = (tran_low_t)x14; + output[6] = (tran_low_t)x10; + output[7] = (tran_low_t)x2; + output[8] = (tran_low_t)x3; + output[9] = (tran_low_t)x11; + output[10] = (tran_low_t)x15; + output[11] = (tran_low_t)x7; + output[12] = (tran_low_t)x5; + output[13] = (tran_low_t)-x13; + output[14] = (tran_low_t)x9; + output[15] = (tran_low_t)-x1; +} + +static const transform_2d FHT_4[] = { + { fdct4, fdct4 }, // DCT_DCT = 0 + { fadst4, fdct4 }, // ADST_DCT = 1 + { fdct4, fadst4 }, // DCT_ADST = 2 + { fadst4, fadst4 } // ADST_ADST = 3 +}; + +static const transform_2d FHT_8[] = { + { fdct8, fdct8 }, // DCT_DCT = 0 + { fadst8, fdct8 }, // ADST_DCT = 1 + { fdct8, fadst8 }, // DCT_ADST = 2 + { fadst8, fadst8 } // ADST_ADST = 3 +}; + +static const transform_2d FHT_16[] = { + { fdct16, fdct16 }, // DCT_DCT = 0 + { fadst16, fdct16 }, // ADST_DCT = 1 + { fdct16, fadst16 }, // DCT_ADST = 2 + { fadst16, fadst16 } // ADST_ADST = 3 +}; + +void vp10_fht4x4_c(const int16_t *input, tran_low_t *output, + int stride, int tx_type) { + if (tx_type == DCT_DCT) { + vpx_fdct4x4_c(input, output, stride); + } else { + tran_low_t out[4 * 4]; + int i, j; + tran_low_t temp_in[4], temp_out[4]; + const transform_2d ht = FHT_4[tx_type]; + + // Columns + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) + temp_in[j] = input[j * stride + i] * 16; + if (i == 0 && temp_in[0]) + temp_in[0] += 1; + ht.cols(temp_in, temp_out); + for (j = 0; j < 4; ++j) + out[j * 4 + i] = temp_out[j]; + } + + // Rows + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) + temp_in[j] = out[j + i * 4]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 4; ++j) + output[j + i * 4] = (temp_out[j] + 1) >> 2; + } + } +} + +void vp10_fdct8x8_quant_c(const int16_t *input, int stride, + tran_low_t *coeff_ptr, intptr_t n_coeffs, + int skip_block, + const int16_t *zbin_ptr, const int16_t *round_ptr, + const int16_t *quant_ptr, + const int16_t *quant_shift_ptr, + tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, + const int16_t *dequant_ptr, + uint16_t *eob_ptr, + const int16_t *scan, const int16_t *iscan) { + int eob = -1; + + int i, j; + tran_low_t intermediate[64]; + + // Transform columns + { + tran_low_t *output = intermediate; + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16 + tran_high_t t0, t1, t2, t3; // needs32 + tran_high_t x0, x1, x2, x3; // canbe16 + + int i; + for (i = 0; i < 8; i++) { + // stage 1 + s0 = (input[0 * stride] + input[7 * stride]) * 4; + s1 = (input[1 * stride] + input[6 * stride]) * 4; + s2 = (input[2 * stride] + input[5 * stride]) * 4; + s3 = (input[3 * stride] + input[4 * stride]) * 4; + s4 = (input[3 * stride] - input[4 * stride]) * 4; + s5 = (input[2 * stride] - input[5 * stride]) * 4; + s6 = (input[1 * stride] - input[6 * stride]) * 4; + s7 = (input[0 * stride] - input[7 * stride]) * 4; + + // fdct4(step, step); + x0 = s0 + s3; + x1 = s1 + s2; + x2 = s1 - s2; + x3 = s0 - s3; + t0 = (x0 + x1) * cospi_16_64; + t1 = (x0 - x1) * cospi_16_64; + t2 = x2 * cospi_24_64 + x3 * cospi_8_64; + t3 = -x2 * cospi_8_64 + x3 * cospi_24_64; + output[0 * 8] = (tran_low_t)fdct_round_shift(t0); + output[2 * 8] = (tran_low_t)fdct_round_shift(t2); + output[4 * 8] = (tran_low_t)fdct_round_shift(t1); + output[6 * 8] = (tran_low_t)fdct_round_shift(t3); + + // Stage 2 + t0 = (s6 - s5) * cospi_16_64; + t1 = (s6 + s5) * cospi_16_64; + t2 = fdct_round_shift(t0); + t3 = fdct_round_shift(t1); + + // Stage 3 + x0 = s4 + t2; + x1 = s4 - t2; + x2 = s7 - t3; + x3 = s7 + t3; + + // Stage 4 + t0 = x0 * cospi_28_64 + x3 * cospi_4_64; + t1 = x1 * cospi_12_64 + x2 * cospi_20_64; + t2 = x2 * cospi_12_64 + x1 * -cospi_20_64; + t3 = x3 * cospi_28_64 + x0 * -cospi_4_64; + output[1 * 8] = (tran_low_t)fdct_round_shift(t0); + output[3 * 8] = (tran_low_t)fdct_round_shift(t2); + output[5 * 8] = (tran_low_t)fdct_round_shift(t1); + output[7 * 8] = (tran_low_t)fdct_round_shift(t3); + input++; + output++; + } + } + + // Rows + for (i = 0; i < 8; ++i) { + fdct8(&intermediate[i * 8], &coeff_ptr[i * 8]); + for (j = 0; j < 8; ++j) + coeff_ptr[j + i * 8] /= 2; + } + + // TODO(jingning) Decide the need of these arguments after the + // quantization process is completed. + (void)zbin_ptr; + (void)quant_shift_ptr; + (void)iscan; + + memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); + memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); + + if (!skip_block) { + // Quantization pass: All coefficients with index >= zero_flag are + // skippable. Note: zero_flag can be zero. + for (i = 0; i < n_coeffs; i++) { + const int rc = scan[i]; + const int coeff = coeff_ptr[rc]; + const int coeff_sign = (coeff >> 31); + const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; + + int tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX); + tmp = (tmp * quant_ptr[rc != 0]) >> 16; + + qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign; + dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0]; + + if (tmp) + eob = i; + } + } + *eob_ptr = eob + 1; +} + +void vp10_fht8x8_c(const int16_t *input, tran_low_t *output, + int stride, int tx_type) { + if (tx_type == DCT_DCT) { + vpx_fdct8x8_c(input, output, stride); + } else { + tran_low_t out[64]; + int i, j; + tran_low_t temp_in[8], temp_out[8]; + const transform_2d ht = FHT_8[tx_type]; + + // Columns + for (i = 0; i < 8; ++i) { + for (j = 0; j < 8; ++j) + temp_in[j] = input[j * stride + i] * 4; + ht.cols(temp_in, temp_out); + for (j = 0; j < 8; ++j) + out[j * 8 + i] = temp_out[j]; + } + + // Rows + for (i = 0; i < 8; ++i) { + for (j = 0; j < 8; ++j) + temp_in[j] = out[j + i * 8]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 8; ++j) + output[j + i * 8] = (temp_out[j] + (temp_out[j] < 0)) >> 1; + } + } +} + +/* 4-point reversible, orthonormal Walsh-Hadamard in 3.5 adds, 0.5 shifts per + pixel. */ +void vp10_fwht4x4_c(const int16_t *input, tran_low_t *output, int stride) { + int i; + tran_high_t a1, b1, c1, d1, e1; + const int16_t *ip_pass0 = input; + const tran_low_t *ip = NULL; + tran_low_t *op = output; + + for (i = 0; i < 4; i++) { + a1 = ip_pass0[0 * stride]; + b1 = ip_pass0[1 * stride]; + c1 = ip_pass0[2 * stride]; + d1 = ip_pass0[3 * stride]; + + a1 += b1; + d1 = d1 - c1; + e1 = (a1 - d1) >> 1; + b1 = e1 - b1; + c1 = e1 - c1; + a1 -= c1; + d1 += b1; + op[0] = (tran_low_t)a1; + op[4] = (tran_low_t)c1; + op[8] = (tran_low_t)d1; + op[12] = (tran_low_t)b1; + + ip_pass0++; + op++; + } + ip = output; + op = output; + + for (i = 0; i < 4; i++) { + a1 = ip[0]; + b1 = ip[1]; + c1 = ip[2]; + d1 = ip[3]; + + a1 += b1; + d1 -= c1; + e1 = (a1 - d1) >> 1; + b1 = e1 - b1; + c1 = e1 - c1; + a1 -= c1; + d1 += b1; + op[0] = (tran_low_t)(a1 * UNIT_QUANT_FACTOR); + op[1] = (tran_low_t)(c1 * UNIT_QUANT_FACTOR); + op[2] = (tran_low_t)(d1 * UNIT_QUANT_FACTOR); + op[3] = (tran_low_t)(b1 * UNIT_QUANT_FACTOR); + + ip += 4; + op += 4; + } +} + +void vp10_fht16x16_c(const int16_t *input, tran_low_t *output, + int stride, int tx_type) { + if (tx_type == DCT_DCT) { + vpx_fdct16x16_c(input, output, stride); + } else { + tran_low_t out[256]; + int i, j; + tran_low_t temp_in[16], temp_out[16]; + const transform_2d ht = FHT_16[tx_type]; + + // Columns + for (i = 0; i < 16; ++i) { + for (j = 0; j < 16; ++j) + temp_in[j] = input[j * stride + i] * 4; + ht.cols(temp_in, temp_out); + for (j = 0; j < 16; ++j) + out[j * 16 + i] = (temp_out[j] + 1 + (temp_out[j] < 0)) >> 2; + } + + // Rows + for (i = 0; i < 16; ++i) { + for (j = 0; j < 16; ++j) + temp_in[j] = out[j + i * 16]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 16; ++j) + output[j + i * 16] = temp_out[j]; + } + } +} + +#if CONFIG_VP9_HIGHBITDEPTH +void vp10_highbd_fht4x4_c(const int16_t *input, tran_low_t *output, + int stride, int tx_type) { + vp10_fht4x4_c(input, output, stride, tx_type); +} + +void vp10_highbd_fht8x8_c(const int16_t *input, tran_low_t *output, + int stride, int tx_type) { + vp10_fht8x8_c(input, output, stride, tx_type); +} + +void vp10_highbd_fwht4x4_c(const int16_t *input, tran_low_t *output, + int stride) { + vp10_fwht4x4_c(input, output, stride); +} + +void vp10_highbd_fht16x16_c(const int16_t *input, tran_low_t *output, + int stride, int tx_type) { + vp10_fht16x16_c(input, output, stride, tx_type); +} +#endif // CONFIG_VP9_HIGHBITDEPTH |