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aom/vpx_dsp/quantize.c

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26 KiB
C
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/*
* Copyright (c) 2015 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 "./vpx_dsp_rtcd.h"
#include "vpx_dsp/quantize.h"
#include "vpx_mem/vpx_mem.h"
#if CONFIG_AOM_QM
void vpx_quantize_dc(const tran_low_t *coeff_ptr, int n_coeffs, 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 qm_val_t *qm_ptr, const qm_val_t *iqm_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;
int64_t tmp, eob = -1;
int32_t tmp32;
int dequant =
(dequant_ptr * iqm_ptr[rc] + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
tmp32 = (int32_t)((tmp * qm_ptr[rc] * quant) >> (16 + AOM_QM_BITS));
qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant;
if (tmp32) eob = 0;
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vpx_highbd_quantize_dc(const tran_low_t *coeff_ptr, int n_coeffs,
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 qm_val_t *qm_ptr,
const qm_val_t *iqm_ptr) {
int eob = -1;
int dequant =
(dequant_ptr * iqm_ptr[0] + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
const int coeff = coeff_ptr[0];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int64_t tmp = abs_coeff + round_ptr[0];
const uint32_t abs_qcoeff =
(uint32_t)((tmp * qm_ptr[0] * quant) >> (16 + AOM_QM_BITS));
qcoeff_ptr[0] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dqcoeff_ptr[0] = qcoeff_ptr[0] * dequant;
if (abs_qcoeff) eob = 0;
}
*eob_ptr = eob + 1;
}
#endif
void vpx_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 qm_val_t *qm_ptr, const qm_val_t *iqm_ptr) {
const int n_coeffs = 1024;
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;
int64_t tmp, eob = -1;
int32_t tmp32;
int dequant;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
tmp = clamp(abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
INT16_MIN, INT16_MAX);
tmp32 = (int32_t)((tmp * qm_ptr[rc] * quant) >> (15 + AOM_QM_BITS));
qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
dequant =
(dequant_ptr * iqm_ptr[rc] + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS;
dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant) / 2;
if (tmp32) eob = 0;
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vpx_highbd_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 qm_val_t *qm_ptr,
const qm_val_t *iqm_ptr) {
const int n_coeffs = 1024;
int eob = -1;
int dequant;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
const int coeff = coeff_ptr[0];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int64_t tmp = abs_coeff + ROUND_POWER_OF_TWO(round_ptr[0], 1);
const uint32_t abs_qcoeff =
(uint32_t)((tmp * qm_ptr[0] * quant) >> (15 + AOM_QM_BITS));
qcoeff_ptr[0] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dequant =
(dequant_ptr * iqm_ptr[0] + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS;
dqcoeff_ptr[0] = (qcoeff_ptr[0] * dequant) / 2;
if (abs_qcoeff) eob = 0;
}
*eob_ptr = eob + 1;
}
#endif
void vpx_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,
uint16_t *eob_ptr, const int16_t *scan,
const int16_t *iscan, const qm_val_t *qm_ptr,
const qm_val_t *iqm_ptr) {
int i, non_zero_count = (int)n_coeffs, eob = -1;
const int zbins[2] = { zbin_ptr[0], zbin_ptr[1] };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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 qm_val_t wt = qm_ptr[rc];
const int coeff = coeff_ptr[rc] * wt;
if (coeff < (zbins[rc != 0] << AOM_QM_BITS) &&
coeff > (nzbins[rc != 0] << AOM_QM_BITS))
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 qm_val_t wt = qm_ptr[rc];
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
int dequant;
if (abs_coeff * wt >= (zbins[rc != 0] << AOM_QM_BITS)) {
int32_t tmp32;
int64_t tmp =
clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX);
tmp = tmp * wt;
tmp32 = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
quant_shift_ptr[rc != 0]) >>
(16 + AOM_QM_BITS); // quantization
dequant =
(dequant_ptr[rc != 0] * iqm_ptr[rc] + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant;
if (tmp32) eob = i;
}
}
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vpx_highbd_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, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan,
const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr) {
int i, non_zero_count = (int)n_coeffs, eob = -1;
const int zbins[2] = { zbin_ptr[0], zbin_ptr[1] };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
int dequant;
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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 qm_val_t wt = qm_ptr[rc];
const int coeff = coeff_ptr[rc] * wt;
if (coeff < (zbins[rc != 0] << AOM_QM_BITS) &&
coeff > (nzbins[rc != 0] << AOM_QM_BITS))
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 qm_val_t wt = qm_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
if (abs_coeff * wt >= (zbins[rc != 0] << AOM_QM_BITS)) {
const int64_t tmp1 = abs_coeff + round_ptr[rc != 0];
const int64_t tmpw = tmp1 * wt;
const int64_t tmp2 = ((tmpw * quant_ptr[rc != 0]) >> 16) + tmpw;
const uint32_t abs_qcoeff =
(uint32_t)((tmp2 * quant_shift_ptr[rc != 0]) >> (16 + AOM_QM_BITS));
qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dequant =
(dequant_ptr[rc != 0] * iqm_ptr[rc] + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant;
if (abs_qcoeff) eob = i;
}
}
}
*eob_ptr = eob + 1;
}
#endif
void vpx_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, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan,
const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr) {
const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], 1),
ROUND_POWER_OF_TWO(zbin_ptr[1], 1) };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
int idx = 0;
int idx_arr[1024];
int i, eob = -1;
int dequant;
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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 qm_val_t wt = qm_ptr[rc];
const int coeff = coeff_ptr[rc] * wt;
// If the coefficient is out of the base ZBIN range, keep it for
// quantization.
if (coeff >= (zbins[rc != 0] << AOM_QM_BITS) ||
coeff <= (nzbins[rc != 0] << AOM_QM_BITS))
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 qm_val_t wt = qm_ptr[rc];
int64_t tmp;
int tmp32;
int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
abs_coeff += ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
tmp = clamp(abs_coeff, INT16_MIN, INT16_MAX);
tmp = tmp * wt;
tmp32 = ((((tmp * quant_ptr[rc != 0]) >> 16) + tmp) *
quant_shift_ptr[rc != 0]) >>
(15 + AOM_QM_BITS);
qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
dequant =
(dequant_ptr[rc != 0] * iqm_ptr[rc] + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant) / 2;
if (tmp32) eob = idx_arr[i];
}
}
*eob_ptr = eob + 1;
}
#if CONFIG_VP9_HIGHBITDEPTH
void vpx_highbd_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, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan, const qm_val_t *qm_ptr,
const qm_val_t *iqm_ptr) {
const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], 1),
ROUND_POWER_OF_TWO(zbin_ptr[1], 1) };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
int idx = 0;
int idx_arr[1024];
int i, eob = -1;
int dequant;
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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 qm_val_t wt = qm_ptr[rc];
const int coeff = coeff_ptr[rc] * wt;
// If the coefficient is out of the base ZBIN range, keep it for
// quantization.
if (coeff >= (zbins[rc != 0] << AOM_QM_BITS) ||
coeff <= (nzbins[rc != 0] << AOM_QM_BITS))
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 qm_val_t wt = qm_ptr[rc];
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int64_t tmp1 =
abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
const int64_t tmpw = tmp1 * wt;
const int64_t tmp2 = ((tmpw * quant_ptr[rc != 0]) >> 16) + tmpw;
const uint32_t abs_qcoeff =
(uint32_t)((tmp2 * quant_shift_ptr[rc != 0]) >> (15 + AOM_QM_BITS));
qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dequant =
(dequant_ptr[rc != 0] * iqm_ptr[rc] + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant) / 2;
if (abs_qcoeff) eob = idx_arr[i];
}
}
*eob_ptr = eob + 1;
}
#endif
#else
void vpx_quantize_dc(const tran_low_t *coeff_ptr, int n_coeffs, 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;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
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 vpx_highbd_quantize_dc(const tran_low_t *coeff_ptr, int n_coeffs,
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;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
const int coeff = coeff_ptr[0];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int64_t tmp = abs_coeff + round_ptr[0];
const int abs_qcoeff = (int)((tmp * quant) >> 16);
qcoeff_ptr[0] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dqcoeff_ptr[0] = qcoeff_ptr[0] * dequant_ptr;
if (abs_qcoeff) eob = 0;
}
*eob_ptr = eob + 1;
}
#endif
void vpx_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 n_coeffs = 1024;
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;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
tmp = clamp(abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1),
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 vpx_highbd_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 n_coeffs = 1024;
int eob = -1;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
const int coeff = coeff_ptr[0];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int64_t tmp = abs_coeff + ROUND_POWER_OF_TWO(round_ptr[0], 1);
const int abs_qcoeff = (int)((tmp * quant) >> 15);
qcoeff_ptr[0] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dqcoeff_ptr[0] = qcoeff_ptr[0] * dequant_ptr / 2;
if (abs_qcoeff) eob = 0;
}
*eob_ptr = eob + 1;
}
#endif
void vpx_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,
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_ptr[1] };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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 vpx_highbd_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, 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_ptr[1] };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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]) {
const int64_t tmp1 = abs_coeff + round_ptr[rc != 0];
const int64_t tmp2 = ((tmp1 * quant_ptr[rc != 0]) >> 16) + tmp1;
const uint32_t abs_qcoeff =
(uint32_t)((tmp2 * quant_shift_ptr[rc != 0]) >> 16);
qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0];
if (abs_qcoeff) eob = i;
}
}
}
*eob_ptr = eob + 1;
}
#endif
void vpx_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, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], 1),
ROUND_POWER_OF_TWO(zbin_ptr[1], 1) };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
int idx = 0;
int idx_arr[1024];
int i, eob = -1;
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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 vpx_highbd_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, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], 1),
ROUND_POWER_OF_TWO(zbin_ptr[1], 1) };
const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 };
int idx = 0;
int idx_arr[1024];
int i, eob = -1;
(void)iscan;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
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;
const int64_t tmp1 =
abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1);
const int64_t tmp2 = ((tmp1 * quant_ptr[rc != 0]) >> 16) + tmp1;
const uint32_t abs_qcoeff =
(uint32_t)((tmp2 * quant_shift_ptr[rc != 0]) >> 15);
qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / 2;
if (abs_qcoeff) eob = idx_arr[i];
}
}
*eob_ptr = eob + 1;
}
#endif
#endif
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