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vpx/vp9/encoder/vp9_quantize.c
Yunqing Wang e4aac6bb61 Modify block transform skipping check 
Block transform skipping was implemented based on DCT's energy
conservation property. Modified the thresholds using zero bin
parameters. AC and DC coefficients were checked separately to
allow better identifying of skippable blocks.

Borg test at speed 3 showed:
stdhd set: psnr gain: 0.153%, ssim gain: 0.051%;
derf set: psnr gain: 0.023%, ssim gain: 0.036%

For most test clips, the encoding speedup is 1% - 2%.
parkrun(720p): 7.5% speedup, park_joy(1080p): 3.5% speedup.

Change-Id: If28eb81113a077414f5ca7b021c14f9069b373bb
2014-10-01 12:58:09 -07:00

732 lines
26 KiB
C
Raw Blame History

/*
* 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 <math.h>
#include "vpx_mem/vpx_mem.h"
#include "vp9/common/vp9_quant_common.h"
#include "vp9/common/vp9_seg_common.h"
#include "vp9/encoder/vp9_encoder.h"
#include "vp9/encoder/vp9_quantize.h"
#include "vp9/encoder/vp9_rd.h"
void vp9_quantize_dc(const tran_low_t *coeff_ptr, int skip_block,
const int16_t *round_ptr, const int16_t quant,
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
const int16_t dequant_ptr, uint16_t *eob_ptr) {
const int rc = 0;
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
int tmp, eob = -1;
if (!skip_block) {
tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
tmp = (tmp * quant) >> 16;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr;
if (tmp)
eob = 0;
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vp9_high_quantize_dc(const tran_low_t *coeff_ptr, int skip_block,
const int16_t *round_ptr, const int16_t quant,
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
const int16_t dequant_ptr, uint16_t *eob_ptr) {
int eob = -1;
if (!skip_block) {
const int rc = 0;
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int64_t tmp =
(clamp(abs_coeff + round_ptr[rc != 0], INT32_MIN, INT32_MAX) *
quant) >> 16;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr;
if (tmp)
eob = 0;
}
*eob_ptr = eob + 1;
}
#endif
void vp9_quantize_dc_32x32(const tran_low_t *coeff_ptr, int skip_block,
const int16_t *round_ptr, const int16_t quant,
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
const int16_t dequant_ptr, uint16_t *eob_ptr) {
const int rc = 0;
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
int tmp, eob = -1;
if (!skip_block) {
tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
tmp = (tmp * quant) >> 15;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr / 2;
if (tmp)
eob = 0;
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vp9_high_quantize_dc_32x32(const tran_low_t *coeff_ptr, int skip_block,
const int16_t *round_ptr, const int16_t quant,
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
const int16_t dequant_ptr, uint16_t *eob_ptr) {
int eob = -1;
if (!skip_block) {
const int rc = 0;
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int64_t tmp =
(clamp(abs_coeff + round_ptr[rc != 0], INT32_MIN, INT32_MAX) *
quant) >> 15;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr / 2;
if (tmp)
eob = 0;
}
*eob_ptr = eob + 1;
}
#endif
void vp9_quantize_fp_c(const 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,
int zbin_oq_value, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
int i, eob = -1;
// TODO(jingning) Decide the need of these arguments after the
// quantization process is completed.
(void)zbin_ptr;
(void)quant_shift_ptr;
(void)zbin_oq_value;
(void)iscan;
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
vpx_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;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vp9_high_quantize_fp_c(const tran_low_t *coeff_ptr, intptr_t count,
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,
int zbin_oq_value, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
int i;
int eob = -1;
// TODO(jingning) Decide the need of these arguments after the
// quantization process is completed.
(void)zbin_ptr;
(void)quant_shift_ptr;
(void)zbin_oq_value;
(void)iscan;
vpx_memset(qcoeff_ptr, 0, count * sizeof(*qcoeff_ptr));
vpx_memset(dqcoeff_ptr, 0, count * 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 < count; 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;
const int64_t tmp =
(clamp(abs_coeff + round_ptr[rc != 0], INT32_MIN, INT32_MAX) *
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;
}
#endif
// TODO(jingning) Refactor this file and combine functions with similar
// operations.
void vp9_quantize_fp_32x32_c(const 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,
int zbin_oq_value, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
int i, eob = -1;
(void)zbin_ptr;
(void)quant_shift_ptr;
(void)zbin_oq_value;
(void)iscan;
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
for (i = 0; i < n_coeffs; i++) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
int tmp = 0;
int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
if (abs_coeff >= (dequant_ptr[rc != 0] >> 2)) {
abs_coeff += ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
abs_coeff = clamp(abs_coeff, INT16_MIN, INT16_MAX);
tmp = (abs_coeff * quant_ptr[rc != 0]) >> 15;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
}
if (tmp)
eob = i;
}
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vp9_high_quantize_fp_32x32_c(const 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,
int zbin_oq_value, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
int i, eob = -1;
(void)zbin_ptr;
(void)quant_shift_ptr;
(void)zbin_oq_value;
(void)iscan;
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
for (i = 0; i < n_coeffs; i++) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
int64_t tmp = 0;
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
if (abs_coeff >= (dequant_ptr[rc != 0] >> 2)) {
tmp = clamp(abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
INT32_MIN, INT32_MAX);
tmp = (tmp * quant_ptr[rc != 0]) >> 15;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
}
if (tmp)
eob = i;
}
}
*eob_ptr = eob + 1;
}
#endif
void vp9_quantize_b_c(const 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,
int zbin_oq_value, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
int i, non_zero_count = (int)n_coeffs, eob = -1;
const int zbins[2] = { zbin_ptr[0] + zbin_oq_value,
zbin_ptr[1] + zbin_oq_value };
const int nzbins[2] = { zbins[0] * -1,
zbins[1] * -1 };
(void)iscan;
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
// Pre-scan pass
for (i = (int)n_coeffs - 1; i >= 0; i--) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
if (coeff < zbins[rc != 0] && coeff > nzbins[rc != 0])
non_zero_count--;
else
break;
}
// Quantization pass: All coefficients with index >= zero_flag are
// skippable. Note: zero_flag can be zero.
for (i = 0; i < non_zero_count; 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;
if (abs_coeff >= zbins[rc != 0]) {
int tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
tmp = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
quant_shift_ptr[rc != 0]) >> 16; // quantization
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;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vp9_high_quantize_b_c(const 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, int zbin_oq_value,
uint16_t *eob_ptr, const int16_t *scan,
const int16_t *iscan) {
int i, non_zero_count = (int)n_coeffs, eob = -1;
const int zbins[2] = { zbin_ptr[0] + zbin_oq_value,
zbin_ptr[1] + zbin_oq_value };
const int nzbins[2] = { zbins[0] * -1,
zbins[1] * -1 };
(void)iscan;
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
// Pre-scan pass
for (i = (int)n_coeffs - 1; i >= 0; i--) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
if (coeff < zbins[rc != 0] && coeff > nzbins[rc != 0])
non_zero_count--;
else
break;
}
// Quantization pass: All coefficients with index >= zero_flag are
// skippable. Note: zero_flag can be zero.
for (i = 0; i < non_zero_count; 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;
if (abs_coeff >= zbins[rc != 0]) {
int64_t tmp = clamp(abs_coeff + round_ptr[rc != 0],
INT32_MIN, INT32_MAX);
tmp = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
quant_shift_ptr[rc != 0]) >> 16; // quantization
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;
}
#endif
void vp9_quantize_b_32x32_c(const 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,
int zbin_oq_value, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0] + zbin_oq_value, 1),
ROUND_POWER_OF_TWO(zbin_ptr[1] + zbin_oq_value, 1) };
const int nzbins[2] = {zbins[0] * -1, zbins[1] * -1};
int idx = 0;
int idx_arr[1024];
int i, eob = -1;
(void)iscan;
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
// Pre-scan pass
for (i = 0; i < n_coeffs; i++) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
// If the coefficient is out of the base ZBIN range, keep it for
// quantization.
if (coeff >= zbins[rc != 0] || coeff <= nzbins[rc != 0])
idx_arr[idx++] = i;
}
// Quantization pass: only process the coefficients selected in
// pre-scan pass. Note: idx can be zero.
for (i = 0; i < idx; i++) {
const int rc = scan[idx_arr[i]];
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
int tmp;
int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
abs_coeff += ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
abs_coeff = clamp(abs_coeff, INT16_MIN, INT16_MAX);
tmp = ((((abs_coeff * quant_ptr[rc != 0]) >> 16) + abs_coeff) *
quant_shift_ptr[rc != 0]) >> 15;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
if (tmp)
eob = idx_arr[i];
}
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vp9_high_quantize_b_32x32_c(const 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,
int zbin_oq_value, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0] + zbin_oq_value, 1),
ROUND_POWER_OF_TWO(zbin_ptr[1] + zbin_oq_value, 1) };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
int idx = 0;
int idx_arr[1024];
int i, eob = -1;
(void)iscan;
vpx_memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
vpx_memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
// Pre-scan pass
for (i = 0; i < n_coeffs; i++) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
// If the coefficient is out of the base ZBIN range, keep it for
// quantization.
if (coeff >= zbins[rc != 0] || coeff <= nzbins[rc != 0])
idx_arr[idx++] = i;
}
// Quantization pass: only process the coefficients selected in
// pre-scan pass. Note: idx can be zero.
for (i = 0; i < idx; i++) {
const int rc = scan[idx_arr[i]];
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
int64_t tmp = clamp(abs_coeff +
ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
INT32_MIN, INT32_MAX);
tmp = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
quant_shift_ptr[rc != 0]) >> 15;
qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
if (tmp)
eob = idx_arr[i];
}
}
*eob_ptr = eob + 1;
}
#endif
void vp9_regular_quantize_b_4x4(MACROBLOCK *x, int plane, int block,
const int16_t *scan, const int16_t *iscan) {
MACROBLOCKD *const xd = &x->e_mbd;
struct macroblock_plane *p = &x->plane[plane];
struct macroblockd_plane *pd = &xd->plane[plane];
#if CONFIG_VP9_HIGHBITDEPTH
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
vp9_high_quantize_b(BLOCK_OFFSET(p->coeff, block),
16, x->skip_block,
p->zbin, p->round, p->quant, p->quant_shift,
BLOCK_OFFSET(p->qcoeff, block),
BLOCK_OFFSET(pd->dqcoeff, block),
pd->dequant, p->zbin_extra, &p->eobs[block],
scan, iscan);
return;
}
#endif
vp9_quantize_b(BLOCK_OFFSET(p->coeff, block),
16, x->skip_block,
p->zbin, p->round, p->quant, p->quant_shift,
BLOCK_OFFSET(p->qcoeff, block),
BLOCK_OFFSET(pd->dqcoeff, block),
pd->dequant, p->zbin_extra, &p->eobs[block], scan, iscan);
}
static void invert_quant(int16_t *quant, int16_t *shift, int d) {
unsigned t;
int l;
t = d;
for (l = 0; t > 1; l++)
t >>= 1;
t = 1 + (1 << (16 + l)) / d;
*quant = (int16_t)(t - (1 << 16));
*shift = 1 << (16 - l);
}
static int get_qzbin_factor(int q, vpx_bit_depth_t bit_depth) {
const int quant = vp9_dc_quant(q, 0, bit_depth);
#if CONFIG_VP9_HIGHBITDEPTH
switch (bit_depth) {
case VPX_BITS_8:
return q == 0 ? 64 : (quant < 148 ? 84 : 80);
case VPX_BITS_10:
return q == 0 ? 64 : (quant < 592 ? 84 : 80);
case VPX_BITS_12:
return q == 0 ? 64 : (quant < 2368 ? 84 : 80);
default:
assert(0 && "bit_depth should be VPX_BITS_8, VPX_BITS_10 or VPX_BITS_12");
return -1;
}
#else
(void) bit_depth;
return q == 0 ? 64 : (quant < 148 ? 84 : 80);
#endif
}
void vp9_init_quantizer(VP9_COMP *cpi) {
VP9_COMMON *const cm = &cpi->common;
QUANTS *const quants = &cpi->quants;
int i, q, quant;
for (q = 0; q < QINDEX_RANGE; q++) {
const int qzbin_factor = get_qzbin_factor(q, cm->bit_depth);
const int qrounding_factor = q == 0 ? 64 : 48;
for (i = 0; i < 2; ++i) {
int qrounding_factor_fp = i == 0 ? 48 : 42;
if (q == 0)
qrounding_factor_fp = 64;
// y
quant = i == 0 ? vp9_dc_quant(q, cm->y_dc_delta_q, cm->bit_depth)
: vp9_ac_quant(q, 0, cm->bit_depth);
invert_quant(&quants->y_quant[q][i], &quants->y_quant_shift[q][i], quant);
quants->y_quant_fp[q][i] = (1 << 16) / quant;
quants->y_round_fp[q][i] = (qrounding_factor_fp * quant) >> 7;
quants->y_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7);
quants->y_round[q][i] = (qrounding_factor * quant) >> 7;
cm->y_dequant[q][i] = quant;
// uv
quant = i == 0 ? vp9_dc_quant(q, cm->uv_dc_delta_q, cm->bit_depth)
: vp9_ac_quant(q, cm->uv_ac_delta_q, cm->bit_depth);
invert_quant(&quants->uv_quant[q][i],
&quants->uv_quant_shift[q][i], quant);
quants->uv_quant_fp[q][i] = (1 << 16) / quant;
quants->uv_round_fp[q][i] = (qrounding_factor_fp * quant) >> 7;
quants->uv_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7);
quants->uv_round[q][i] = (qrounding_factor * quant) >> 7;
cm->uv_dequant[q][i] = quant;
}
for (i = 2; i < 8; i++) {
quants->y_quant[q][i] = quants->y_quant[q][1];
quants->y_quant_fp[q][i] = quants->y_quant_fp[q][1];
quants->y_round_fp[q][i] = quants->y_round_fp[q][1];
quants->y_quant_shift[q][i] = quants->y_quant_shift[q][1];
quants->y_zbin[q][i] = quants->y_zbin[q][1];
quants->y_round[q][i] = quants->y_round[q][1];
cm->y_dequant[q][i] = cm->y_dequant[q][1];
quants->uv_quant[q][i] = quants->uv_quant[q][1];
quants->uv_quant_fp[q][i] = quants->uv_quant_fp[q][1];
quants->uv_round_fp[q][i] = quants->uv_round_fp[q][1];
quants->uv_quant_shift[q][i] = quants->uv_quant_shift[q][1];
quants->uv_zbin[q][i] = quants->uv_zbin[q][1];
quants->uv_round[q][i] = quants->uv_round[q][1];
cm->uv_dequant[q][i] = cm->uv_dequant[q][1];
}
}
}
void vp9_init_plane_quantizers(VP9_COMP *cpi, MACROBLOCK *x) {
const VP9_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &x->e_mbd;
QUANTS *const quants = &cpi->quants;
const int segment_id = xd->mi[0].src_mi->mbmi.segment_id;
const int qindex = vp9_get_qindex(&cm->seg, segment_id, cm->base_qindex);
const int rdmult = vp9_compute_rd_mult(cpi, qindex + cm->y_dc_delta_q);
const int zbin = cpi->zbin_mode_boost;
int i;
// Y
x->plane[0].quant = quants->y_quant[qindex];
x->plane[0].quant_fp = quants->y_quant_fp[qindex];
x->plane[0].round_fp = quants->y_round_fp[qindex];
x->plane[0].quant_shift = quants->y_quant_shift[qindex];
x->plane[0].zbin = quants->y_zbin[qindex];
x->plane[0].round = quants->y_round[qindex];
x->plane[0].zbin_extra = (int16_t)((cm->y_dequant[qindex][1] * zbin) >> 7);
xd->plane[0].dequant = cm->y_dequant[qindex];
x->plane[0].quant_thred[0] = (x->plane[0].zbin[0] + x->plane[0].zbin_extra) *
(x->plane[0].zbin[0] + x->plane[0].zbin_extra);
x->plane[0].quant_thred[1] = (x->plane[0].zbin[1] + x->plane[0].zbin_extra) *
(x->plane[0].zbin[1] + x->plane[0].zbin_extra);
// UV
for (i = 1; i < 3; i++) {
x->plane[i].quant = quants->uv_quant[qindex];
x->plane[i].quant_fp = quants->uv_quant_fp[qindex];
x->plane[i].round_fp = quants->uv_round_fp[qindex];
x->plane[i].quant_shift = quants->uv_quant_shift[qindex];
x->plane[i].zbin = quants->uv_zbin[qindex];
x->plane[i].round = quants->uv_round[qindex];
x->plane[i].zbin_extra = (int16_t)((cm->uv_dequant[qindex][1] * zbin) >> 7);
xd->plane[i].dequant = cm->uv_dequant[qindex];
x->plane[i].quant_thred[0] =
(x->plane[i].zbin[0] + x->plane[i].zbin_extra) *
(x->plane[i].zbin[0] + x->plane[i].zbin_extra);
x->plane[i].quant_thred[1] =
(x->plane[i].zbin[1] + x->plane[i].zbin_extra) *
(x->plane[i].zbin[1] + x->plane[i].zbin_extra);
}
x->skip_block = vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP);
x->q_index = qindex;
x->errorperbit = rdmult >> 6;
x->errorperbit += (x->errorperbit == 0);
vp9_initialize_me_consts(cpi, x->q_index);
}
void vp9_update_zbin_extra(VP9_COMP *cpi, MACROBLOCK *x) {
const int qindex = x->q_index;
const int y_zbin_extra = (cpi->common.y_dequant[qindex][1] *
cpi->zbin_mode_boost) >> 7;
const int uv_zbin_extra = (cpi->common.uv_dequant[qindex][1] *
cpi->zbin_mode_boost) >> 7;
x->plane[0].zbin_extra = (int16_t)y_zbin_extra;
x->plane[1].zbin_extra = (int16_t)uv_zbin_extra;
x->plane[2].zbin_extra = (int16_t)uv_zbin_extra;
}
void vp9_frame_init_quantizer(VP9_COMP *cpi) {
cpi->zbin_mode_boost = 0;
vp9_init_plane_quantizers(cpi, &cpi->mb);
}
void vp9_set_quantizer(VP9_COMMON *cm, int q) {
// quantizer has to be reinitialized with vp9_init_quantizer() if any
// delta_q changes.
cm->base_qindex = q;
cm->y_dc_delta_q = 0;
cm->uv_dc_delta_q = 0;
cm->uv_ac_delta_q = 0;
}
// Table that converts 0-63 Q-range values passed in outside to the Qindex
// range used internally.
static const int quantizer_to_qindex[] = {
0, 4, 8, 12, 16, 20, 24, 28,
32, 36, 40, 44, 48, 52, 56, 60,
64, 68, 72, 76, 80, 84, 88, 92,
96, 100, 104, 108, 112, 116, 120, 124,
128, 132, 136, 140, 144, 148, 152, 156,
160, 164, 168, 172, 176, 180, 184, 188,
192, 196, 200, 204, 208, 212, 216, 220,
224, 228, 232, 236, 240, 244, 249, 255,
};
int vp9_quantizer_to_qindex(int quantizer) {
return quantizer_to_qindex[quantizer];
}
int vp9_qindex_to_quantizer(int qindex) {
int quantizer;
for (quantizer = 0; quantizer < 64; ++quantizer)
if (quantizer_to_qindex[quantizer] >= qindex)
return quantizer;
return 63;
}
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