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Dactyloidae/third_party/aom/av1/encoder/av1_quantize.c

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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <math.h>
#include "config/aom_dsp_rtcd.h"
#include "aom_dsp/quantize.h"
#include "aom_mem/aom_mem.h"
#include "aom_ports/mem.h"
#include "av1/common/idct.h"
#include "av1/common/quant_common.h"
#include "av1/common/scan.h"
#include "av1/common/seg_common.h"
#include "av1/encoder/av1_quantize.h"
#include "av1/encoder/encoder.h"
#include "av1/encoder/rd.h"
void av1_quantize_skip(intptr_t n_coeffs, tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr) {
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
*eob_ptr = 0;
}
static void quantize_fp_helper_c(
const tran_low_t *coeff_ptr, intptr_t n_coeffs, 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 log_scale) {
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;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (qm_ptr == NULL && iqm_ptr == NULL) {
const int rounding0 = ROUND_POWER_OF_TWO(round_ptr[0], log_scale);
{ // rc == 0
const int coeff = coeff_ptr[0];
const int coeff_sign = (coeff >> 31);
int64_t abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
if ((abs_coeff << (1 + log_scale)) >= (int32_t)(dequant_ptr[0])) {
abs_coeff = clamp64(abs_coeff + rounding0, INT16_MIN, INT16_MAX);
const int tmp32 = (int)((abs_coeff * quant_ptr[0]) >> (16 - log_scale));
if (tmp32) {
qcoeff_ptr[0] = (tmp32 ^ coeff_sign) - coeff_sign;
const tran_low_t abs_dqcoeff = (tmp32 * dequant_ptr[0]) >> log_scale;
dqcoeff_ptr[0] = (abs_dqcoeff ^ coeff_sign) - coeff_sign;
eob = 0;
}
}
}
const int rounding1 = ROUND_POWER_OF_TWO(round_ptr[1], log_scale);
const int32_t thresh1 = (int32_t)(dequant_ptr[1]);
for (i = 1; i < n_coeffs; i++) {
const int coeff = coeff_ptr[i];
const int coeff_sign = (coeff >> 31);
int64_t abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
if ((abs_coeff << (1 + log_scale)) >= thresh1) {
abs_coeff = clamp64(abs_coeff + rounding1, INT16_MIN, INT16_MAX);
const int tmp32 = (int)((abs_coeff * quant_ptr[1]) >> (16 - log_scale));
if (tmp32) {
qcoeff_ptr[i] = (tmp32 ^ coeff_sign) - coeff_sign;
const tran_low_t abs_dqcoeff = (tmp32 * dequant_ptr[1]) >> log_scale;
dqcoeff_ptr[i] = (abs_dqcoeff ^ coeff_sign) - coeff_sign;
eob = AOMMAX(iscan[i], eob);
}
}
}
} else {
// 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 qm_val_t wt = qm_ptr ? qm_ptr[rc] : (1 << AOM_QM_BITS);
const qm_val_t iwt = iqm_ptr ? iqm_ptr[rc] : (1 << AOM_QM_BITS);
const int dequant =
(dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
const int coeff_sign = (coeff >> 31);
int64_t abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
int tmp32 = 0;
if (abs_coeff * wt >=
(dequant_ptr[rc != 0] << (AOM_QM_BITS - (1 + log_scale)))) {
abs_coeff += ROUND_POWER_OF_TWO(round_ptr[rc != 0], log_scale);
abs_coeff = clamp64(abs_coeff, INT16_MIN, INT16_MAX);
tmp32 = (int)((abs_coeff * wt * quant_ptr[rc != 0]) >>
(16 - log_scale + AOM_QM_BITS));
qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
const tran_low_t abs_dqcoeff = (tmp32 * dequant) >> log_scale;
dqcoeff_ptr[rc] = (abs_dqcoeff ^ coeff_sign) - coeff_sign;
}
if (tmp32) eob = i;
}
}
*eob_ptr = eob + 1;
}
static void highbd_quantize_fp_helper_c(
const tran_low_t *coeff_ptr, intptr_t count, 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 log_scale) {
int i;
int eob = -1;
const int shift = 16 - log_scale;
// TODO(jingning) Decide the need of these arguments after the
// quantization process is completed.
(void)zbin_ptr;
(void)quant_shift_ptr;
(void)iscan;
if (qm_ptr || iqm_ptr) {
// 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 qm_val_t wt = qm_ptr != NULL ? qm_ptr[rc] : (1 << AOM_QM_BITS);
const qm_val_t iwt = iqm_ptr != NULL ? iqm_ptr[rc] : (1 << AOM_QM_BITS);
const int dequant =
(dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
const int coeff_sign = (coeff >> 31);
const int64_t abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
int abs_qcoeff = 0;
if (abs_coeff * wt >=
(dequant_ptr[rc != 0] << (AOM_QM_BITS - (1 + log_scale)))) {
const int64_t tmp =
abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], log_scale);
abs_qcoeff =
(int)((tmp * quant_ptr[rc != 0] * wt) >> (shift + AOM_QM_BITS));
qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
const tran_low_t abs_dqcoeff = (abs_qcoeff * dequant) >> log_scale;
dqcoeff_ptr[rc] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign);
if (abs_qcoeff) eob = i;
} else {
qcoeff_ptr[rc] = 0;
dqcoeff_ptr[rc] = 0;
}
}
} else {
const int log_scaled_round_arr[2] = {
ROUND_POWER_OF_TWO(round_ptr[0], log_scale),
ROUND_POWER_OF_TWO(round_ptr[1], log_scale),
};
for (i = 0; i < count; i++) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
const int rc01 = (rc != 0);
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
const int log_scaled_round = log_scaled_round_arr[rc01];
if ((abs_coeff << (1 + log_scale)) >= dequant_ptr[rc01]) {
const int quant = quant_ptr[rc01];
const int dequant = dequant_ptr[rc01];
const int64_t tmp = (int64_t)abs_coeff + log_scaled_round;
const int abs_qcoeff = (int)((tmp * quant) >> shift);
qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
const tran_low_t abs_dqcoeff = (abs_qcoeff * dequant) >> log_scale;
if (abs_qcoeff) eob = i;
dqcoeff_ptr[rc] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign);
} else {
qcoeff_ptr[rc] = 0;
dqcoeff_ptr[rc] = 0;
}
}
}
*eob_ptr = eob + 1;
}
void av1_quantize_fp_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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) {
quantize_fp_helper_c(coeff_ptr, n_coeffs, zbin_ptr, round_ptr, quant_ptr,
quant_shift_ptr, qcoeff_ptr, dqcoeff_ptr, dequant_ptr,
eob_ptr, scan, iscan, NULL, NULL, 0);
}
void av1_quantize_fp_32x32_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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) {
quantize_fp_helper_c(coeff_ptr, n_coeffs, zbin_ptr, round_ptr, quant_ptr,
quant_shift_ptr, qcoeff_ptr, dqcoeff_ptr, dequant_ptr,
eob_ptr, scan, iscan, NULL, NULL, 1);
}
void av1_quantize_fp_64x64_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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) {
quantize_fp_helper_c(coeff_ptr, n_coeffs, zbin_ptr, round_ptr, quant_ptr,
quant_shift_ptr, qcoeff_ptr, dqcoeff_ptr, dequant_ptr,
eob_ptr, scan, iscan, NULL, NULL, 2);
}
void av1_quantize_fp_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr,
const SCAN_ORDER *sc, const QUANT_PARAM *qparam) {
const qm_val_t *qm_ptr = qparam->qmatrix;
const qm_val_t *iqm_ptr = qparam->iqmatrix;
if (qm_ptr != NULL && iqm_ptr != NULL) {
quantize_fp_helper_c(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX,
p->quant_fp_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan, qm_ptr, iqm_ptr, qparam->log_scale);
} else {
switch (qparam->log_scale) {
case 0:
if (n_coeffs < 16) {
// TODO(jingning): Need SIMD implementation for smaller block size
// quantization.
quantize_fp_helper_c(
coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX,
p->quant_fp_QTX, p->quant_shift_QTX, qcoeff_ptr, dqcoeff_ptr,
p->dequant_QTX, eob_ptr, sc->scan, sc->iscan, NULL, NULL, 0);
} else {
av1_quantize_fp(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX,
p->quant_fp_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan);
}
break;
case 1:
av1_quantize_fp_32x32(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX,
p->quant_fp_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan);
break;
case 2:
av1_quantize_fp_64x64(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX,
p->quant_fp_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan);
break;
default: assert(0);
}
}
}
void av1_quantize_b_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr,
const SCAN_ORDER *sc, const QUANT_PARAM *qparam) {
const qm_val_t *qm_ptr = qparam->qmatrix;
const qm_val_t *iqm_ptr = qparam->iqmatrix;
if (qm_ptr != NULL && iqm_ptr != NULL) {
quantize_b_helper_c(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX,
p->quant_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan, qm_ptr, iqm_ptr, qparam->log_scale);
} else {
switch (qparam->log_scale) {
case 0:
aom_quantize_b(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX,
p->quant_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan);
break;
case 1:
aom_quantize_b_32x32(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX,
p->quant_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan);
break;
case 2:
aom_quantize_b_64x64(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX,
p->quant_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan);
break;
default: assert(0);
}
}
}
static void 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 log_scale) {
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;
int 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) {
const int wt = qm_ptr != NULL ? qm_ptr[rc] : (1 << AOM_QM_BITS);
const int iwt = iqm_ptr != NULL ? iqm_ptr[rc] : (1 << AOM_QM_BITS);
tmp = clamp(abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], log_scale),
INT16_MIN, INT16_MAX);
tmp32 = (int32_t)((tmp * wt * quant) >> (16 - log_scale + AOM_QM_BITS));
qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign;
dequant = (dequant_ptr * iwt + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS;
const tran_low_t abs_dqcoeff = (tmp32 * dequant) >> log_scale;
dqcoeff_ptr[rc] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign);
if (tmp32) eob = 0;
}
*eob_ptr = eob + 1;
}
void av1_quantize_dc_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr,
const SCAN_ORDER *sc, const QUANT_PARAM *qparam) {
// obsolete skip_block
const int skip_block = 0;
(void)sc;
assert(qparam->log_scale >= 0 && qparam->log_scale < (3));
const qm_val_t *qm_ptr = qparam->qmatrix;
const qm_val_t *iqm_ptr = qparam->iqmatrix;
quantize_dc(coeff_ptr, (int)n_coeffs, skip_block, p->round_QTX,
p->quant_fp_QTX[0], qcoeff_ptr, dqcoeff_ptr, p->dequant_QTX[0],
eob_ptr, qm_ptr, iqm_ptr, qparam->log_scale);
}
void av1_highbd_quantize_fp_facade(const tran_low_t *coeff_ptr,
intptr_t n_coeffs, const MACROBLOCK_PLANE *p,
tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr,
const SCAN_ORDER *sc,
const QUANT_PARAM *qparam) {
const qm_val_t *qm_ptr = qparam->qmatrix;
const qm_val_t *iqm_ptr = qparam->iqmatrix;
if (qm_ptr != NULL && iqm_ptr != NULL) {
highbd_quantize_fp_helper_c(
coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX, p->quant_fp_QTX,
p->quant_shift_QTX, qcoeff_ptr, dqcoeff_ptr, p->dequant_QTX, eob_ptr,
sc->scan, sc->iscan, qm_ptr, iqm_ptr, qparam->log_scale);
} else {
if (n_coeffs < 16) {
// TODO(jingning): Need SIMD implementation for smaller block size
// quantization.
av1_highbd_quantize_fp_c(
coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX, p->quant_fp_QTX,
p->quant_shift_QTX, qcoeff_ptr, dqcoeff_ptr, p->dequant_QTX, eob_ptr,
sc->scan, sc->iscan, qparam->log_scale);
return;
}
av1_highbd_quantize_fp(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_fp_QTX,
p->quant_fp_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan, qparam->log_scale);
}
}
void av1_highbd_quantize_b_facade(const tran_low_t *coeff_ptr,
intptr_t n_coeffs, const MACROBLOCK_PLANE *p,
tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr,
const SCAN_ORDER *sc,
const QUANT_PARAM *qparam) {
const qm_val_t *qm_ptr = qparam->qmatrix;
const qm_val_t *iqm_ptr = qparam->iqmatrix;
if (qm_ptr != NULL && iqm_ptr != NULL) {
highbd_quantize_b_helper_c(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX,
p->quant_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan, qm_ptr, iqm_ptr, qparam->log_scale);
} else {
switch (qparam->log_scale) {
case 0:
if (LIKELY(n_coeffs >= 8)) {
aom_highbd_quantize_b(coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX,
p->quant_QTX, p->quant_shift_QTX, qcoeff_ptr,
dqcoeff_ptr, p->dequant_QTX, eob_ptr, sc->scan,
sc->iscan);
} else {
// TODO(luoyi): Need SIMD (e.g. sse2) for smaller block size
// quantization
aom_highbd_quantize_b_c(coeff_ptr, n_coeffs, p->zbin_QTX,
p->round_QTX, p->quant_QTX,
p->quant_shift_QTX, qcoeff_ptr, dqcoeff_ptr,
p->dequant_QTX, eob_ptr, sc->scan, sc->iscan);
}
break;
case 1:
aom_highbd_quantize_b_32x32(
coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX, p->quant_QTX,
p->quant_shift_QTX, qcoeff_ptr, dqcoeff_ptr, p->dequant_QTX,
eob_ptr, sc->scan, sc->iscan);
break;
case 2:
aom_highbd_quantize_b_64x64(
coeff_ptr, n_coeffs, p->zbin_QTX, p->round_QTX, p->quant_QTX,
p->quant_shift_QTX, qcoeff_ptr, dqcoeff_ptr, p->dequant_QTX,
eob_ptr, sc->scan, sc->iscan);
break;
default: assert(0);
}
}
}
static INLINE void 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, const int log_scale) {
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 qm_val_t wt = qm_ptr != NULL ? qm_ptr[0] : (1 << AOM_QM_BITS);
const qm_val_t iwt = iqm_ptr != NULL ? iqm_ptr[0] : (1 << AOM_QM_BITS);
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], log_scale);
const int64_t tmpw = tmp * wt;
const int abs_qcoeff =
(int)((tmpw * quant) >> (16 - log_scale + AOM_QM_BITS));
qcoeff_ptr[0] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
const int dequant =
(dequant_ptr * iwt + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS;
const tran_low_t abs_dqcoeff = (abs_qcoeff * dequant) >> log_scale;
dqcoeff_ptr[0] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign);
if (abs_qcoeff) eob = 0;
}
*eob_ptr = eob + 1;
}
void av1_highbd_quantize_dc_facade(const tran_low_t *coeff_ptr,
intptr_t n_coeffs, const MACROBLOCK_PLANE *p,
tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr,
const SCAN_ORDER *sc,
const QUANT_PARAM *qparam) {
// obsolete skip_block
const int skip_block = 0;
const qm_val_t *qm_ptr = qparam->qmatrix;
const qm_val_t *iqm_ptr = qparam->iqmatrix;
(void)sc;
highbd_quantize_dc(coeff_ptr, (int)n_coeffs, skip_block, p->round_QTX,
p->quant_fp_QTX[0], qcoeff_ptr, dqcoeff_ptr,
p->dequant_QTX[0], eob_ptr, qm_ptr, iqm_ptr,
qparam->log_scale);
}
void av1_highbd_quantize_fp_c(const tran_low_t *coeff_ptr, intptr_t count,
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 log_scale) {
highbd_quantize_fp_helper_c(coeff_ptr, count, zbin_ptr, round_ptr, quant_ptr,
quant_shift_ptr, qcoeff_ptr, dqcoeff_ptr,
dequant_ptr, eob_ptr, scan, iscan, NULL, NULL,
log_scale);
}
static void invert_quant(int16_t *quant, int16_t *shift, int d) {
uint32_t t;
int l, m;
t = d;
for (l = 0; t > 1; l++) t >>= 1;
m = 1 + (1 << (16 + l)) / d;
*quant = (int16_t)(m - (1 << 16));
*shift = 1 << (16 - l);
}
static int get_qzbin_factor(int q, aom_bit_depth_t bit_depth) {
const int quant = av1_dc_quant_Q3(q, 0, bit_depth);
switch (bit_depth) {
case AOM_BITS_8: return q == 0 ? 64 : (quant < 148 ? 84 : 80);
case AOM_BITS_10: return q == 0 ? 64 : (quant < 592 ? 84 : 80);
case AOM_BITS_12: return q == 0 ? 64 : (quant < 2368 ? 84 : 80);
default:
assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12");
return -1;
}
}
void av1_build_quantizer(aom_bit_depth_t bit_depth, int y_dc_delta_q,
int u_dc_delta_q, int u_ac_delta_q, int v_dc_delta_q,
int v_ac_delta_q, QUANTS *const quants,
Dequants *const deq) {
int i, q, quant_Q3, quant_QTX;
for (q = 0; q < QINDEX_RANGE; q++) {
const int qzbin_factor = get_qzbin_factor(q, bit_depth);
const int qrounding_factor = q == 0 ? 64 : 48;
for (i = 0; i < 2; ++i) {
int qrounding_factor_fp = 64;
// y quantizer setup with original coeff shift of Q3
quant_Q3 = i == 0 ? av1_dc_quant_Q3(q, y_dc_delta_q, bit_depth)
: av1_ac_quant_Q3(q, 0, bit_depth);
// y quantizer with TX scale
quant_QTX = i == 0 ? av1_dc_quant_QTX(q, y_dc_delta_q, bit_depth)
: av1_ac_quant_QTX(q, 0, bit_depth);
invert_quant(&quants->y_quant[q][i], &quants->y_quant_shift[q][i],
quant_QTX);
quants->y_quant_fp[q][i] = (1 << 16) / quant_QTX;
quants->y_round_fp[q][i] = (qrounding_factor_fp * quant_QTX) >> 7;
quants->y_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant_QTX, 7);
quants->y_round[q][i] = (qrounding_factor * quant_QTX) >> 7;
deq->y_dequant_QTX[q][i] = quant_QTX;
deq->y_dequant_Q3[q][i] = quant_Q3;
// u quantizer setup with original coeff shift of Q3
quant_Q3 = i == 0 ? av1_dc_quant_Q3(q, u_dc_delta_q, bit_depth)
: av1_ac_quant_Q3(q, u_ac_delta_q, bit_depth);
// u quantizer with TX scale
quant_QTX = i == 0 ? av1_dc_quant_QTX(q, u_dc_delta_q, bit_depth)
: av1_ac_quant_QTX(q, u_ac_delta_q, bit_depth);
invert_quant(&quants->u_quant[q][i], &quants->u_quant_shift[q][i],
quant_QTX);
quants->u_quant_fp[q][i] = (1 << 16) / quant_QTX;
quants->u_round_fp[q][i] = (qrounding_factor_fp * quant_QTX) >> 7;
quants->u_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant_QTX, 7);
quants->u_round[q][i] = (qrounding_factor * quant_QTX) >> 7;
deq->u_dequant_QTX[q][i] = quant_QTX;
deq->u_dequant_Q3[q][i] = quant_Q3;
// v quantizer setup with original coeff shift of Q3
quant_Q3 = i == 0 ? av1_dc_quant_Q3(q, v_dc_delta_q, bit_depth)
: av1_ac_quant_Q3(q, v_ac_delta_q, bit_depth);
// v quantizer with TX scale
quant_QTX = i == 0 ? av1_dc_quant_QTX(q, v_dc_delta_q, bit_depth)
: av1_ac_quant_QTX(q, v_ac_delta_q, bit_depth);
invert_quant(&quants->v_quant[q][i], &quants->v_quant_shift[q][i],
quant_QTX);
quants->v_quant_fp[q][i] = (1 << 16) / quant_QTX;
quants->v_round_fp[q][i] = (qrounding_factor_fp * quant_QTX) >> 7;
quants->v_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant_QTX, 7);
quants->v_round[q][i] = (qrounding_factor * quant_QTX) >> 7;
deq->v_dequant_QTX[q][i] = quant_QTX;
deq->v_dequant_Q3[q][i] = quant_Q3;
}
for (i = 2; i < 8; i++) { // 8: SIMD width
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];
deq->y_dequant_QTX[q][i] = deq->y_dequant_QTX[q][1];
deq->y_dequant_Q3[q][i] = deq->y_dequant_Q3[q][1];
quants->u_quant[q][i] = quants->u_quant[q][1];
quants->u_quant_fp[q][i] = quants->u_quant_fp[q][1];
quants->u_round_fp[q][i] = quants->u_round_fp[q][1];
quants->u_quant_shift[q][i] = quants->u_quant_shift[q][1];
quants->u_zbin[q][i] = quants->u_zbin[q][1];
quants->u_round[q][i] = quants->u_round[q][1];
deq->u_dequant_QTX[q][i] = deq->u_dequant_QTX[q][1];
deq->u_dequant_Q3[q][i] = deq->u_dequant_Q3[q][1];
quants->v_quant[q][i] = quants->u_quant[q][1];
quants->v_quant_fp[q][i] = quants->v_quant_fp[q][1];
quants->v_round_fp[q][i] = quants->v_round_fp[q][1];
quants->v_quant_shift[q][i] = quants->v_quant_shift[q][1];
quants->v_zbin[q][i] = quants->v_zbin[q][1];
quants->v_round[q][i] = quants->v_round[q][1];
deq->v_dequant_QTX[q][i] = deq->v_dequant_QTX[q][1];
deq->v_dequant_Q3[q][i] = deq->v_dequant_Q3[q][1];
}
}
}
void av1_init_quantizer(AV1_COMP *cpi) {
AV1_COMMON *const cm = &cpi->common;
QUANTS *const quants = &cpi->quants;
Dequants *const dequants = &cpi->dequants;
av1_build_quantizer(cm->seq_params.bit_depth, cm->y_dc_delta_q,
cm->u_dc_delta_q, cm->u_ac_delta_q, cm->v_dc_delta_q,
cm->v_ac_delta_q, quants, dequants);
}
void av1_init_plane_quantizers(const AV1_COMP *cpi, MACROBLOCK *x,
int segment_id) {
const AV1_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &x->e_mbd;
const QUANTS *const quants = &cpi->quants;
int current_qindex = AOMMAX(
0, AOMMIN(QINDEX_RANGE - 1, cpi->oxcf.deltaq_mode != NO_DELTA_Q
? cm->base_qindex + xd->delta_qindex
: cm->base_qindex));
const int qindex = av1_get_qindex(&cm->seg, segment_id, current_qindex);
const int rdmult = av1_compute_rd_mult(cpi, qindex + cm->y_dc_delta_q);
int qmlevel = (xd->lossless[segment_id] || cm->using_qmatrix == 0)
? NUM_QM_LEVELS - 1
: cm->qm_y;
// Y
x->plane[0].quant_QTX = quants->y_quant[qindex];
x->plane[0].quant_fp_QTX = quants->y_quant_fp[qindex];
x->plane[0].round_fp_QTX = quants->y_round_fp[qindex];
x->plane[0].quant_shift_QTX = quants->y_quant_shift[qindex];
x->plane[0].zbin_QTX = quants->y_zbin[qindex];
x->plane[0].round_QTX = quants->y_round[qindex];
x->plane[0].dequant_QTX = cpi->dequants.y_dequant_QTX[qindex];
memcpy(&xd->plane[0].seg_qmatrix[segment_id], cm->gqmatrix[qmlevel][0],
sizeof(cm->gqmatrix[qmlevel][0]));
memcpy(&xd->plane[0].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][0],
sizeof(cm->giqmatrix[qmlevel][0]));
xd->plane[0].dequant_Q3 = cpi->dequants.y_dequant_Q3[qindex];
// U
qmlevel = (xd->lossless[segment_id] || cm->using_qmatrix == 0)
? NUM_QM_LEVELS - 1
: cm->qm_u;
{
x->plane[1].quant_QTX = quants->u_quant[qindex];
x->plane[1].quant_fp_QTX = quants->u_quant_fp[qindex];
x->plane[1].round_fp_QTX = quants->u_round_fp[qindex];
x->plane[1].quant_shift_QTX = quants->u_quant_shift[qindex];
x->plane[1].zbin_QTX = quants->u_zbin[qindex];
x->plane[1].round_QTX = quants->u_round[qindex];
x->plane[1].dequant_QTX = cpi->dequants.u_dequant_QTX[qindex];
memcpy(&xd->plane[1].seg_qmatrix[segment_id], cm->gqmatrix[qmlevel][1],
sizeof(cm->gqmatrix[qmlevel][1]));
memcpy(&xd->plane[1].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][1],
sizeof(cm->giqmatrix[qmlevel][1]));
x->plane[1].dequant_QTX = cpi->dequants.u_dequant_QTX[qindex];
xd->plane[1].dequant_Q3 = cpi->dequants.u_dequant_Q3[qindex];
}
// V
qmlevel = (xd->lossless[segment_id] || cm->using_qmatrix == 0)
? NUM_QM_LEVELS - 1
: cm->qm_v;
{
x->plane[2].quant_QTX = quants->v_quant[qindex];
x->plane[2].quant_fp_QTX = quants->v_quant_fp[qindex];
x->plane[2].round_fp_QTX = quants->v_round_fp[qindex];
x->plane[2].quant_shift_QTX = quants->v_quant_shift[qindex];
x->plane[2].zbin_QTX = quants->v_zbin[qindex];
x->plane[2].round_QTX = quants->v_round[qindex];
x->plane[2].dequant_QTX = cpi->dequants.v_dequant_QTX[qindex];
memcpy(&xd->plane[2].seg_qmatrix[segment_id], cm->gqmatrix[qmlevel][2],
sizeof(cm->gqmatrix[qmlevel][2]));
memcpy(&xd->plane[2].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][2],
sizeof(cm->giqmatrix[qmlevel][2]));
x->plane[2].dequant_QTX = cpi->dequants.v_dequant_QTX[qindex];
xd->plane[2].dequant_Q3 = cpi->dequants.v_dequant_Q3[qindex];
}
x->skip_block = segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP);
x->qindex = qindex;
set_error_per_bit(x, rdmult);
av1_initialize_me_consts(cpi, x, qindex);
}
void av1_frame_init_quantizer(AV1_COMP *cpi) {
MACROBLOCK *const x = &cpi->td.mb;
MACROBLOCKD *const xd = &x->e_mbd;
av1_init_plane_quantizers(cpi, x, xd->mi[0]->segment_id);
}
void av1_set_quantizer(AV1_COMMON *cm, int q) {
// quantizer has to be reinitialized with av1_init_quantizer() if any
// delta_q changes.
cm->base_qindex = AOMMAX(cm->delta_q_present_flag, q);
cm->y_dc_delta_q = 0;
cm->u_dc_delta_q = 0;
cm->u_ac_delta_q = 0;
cm->v_dc_delta_q = 0;
cm->v_ac_delta_q = 0;
cm->qm_y = aom_get_qmlevel(cm->base_qindex, cm->min_qmlevel, cm->max_qmlevel);
cm->qm_u = aom_get_qmlevel(cm->base_qindex + cm->u_ac_delta_q,
cm->min_qmlevel, cm->max_qmlevel);
if (!cm->seq_params.separate_uv_delta_q)
cm->qm_v = cm->qm_u;
else
cm->qm_v = aom_get_qmlevel(cm->base_qindex + cm->v_ac_delta_q,
cm->min_qmlevel, cm->max_qmlevel);
}
// 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 av1_quantizer_to_qindex(int quantizer) {
return quantizer_to_qindex[quantizer];
}
int av1_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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