diff options
Diffstat (limited to 'third_party/aom/av1/encoder/av1_quantize.c')
| -rw-r--r-- | third_party/aom/av1/encoder/av1_quantize.c | 738 |
1 files changed, 738 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/av1_quantize.c b/third_party/aom/av1/encoder/av1_quantize.c new file mode 100644 index 000000000..a0a926005 --- /dev/null +++ b/third_party/aom/av1/encoder/av1_quantize.c @@ -0,0 +1,738 @@ +/* + * 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; +} |