/* * 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 #include "./vpx_dsp_rtcd.h" #include "vpx_dsp/quantize.h" #include "vpx_mem/vpx_mem.h" #include "vpx_ports/mem.h" #include "vp10/common/quant_common.h" #include "vp10/common/scan.h" #include "vp10/common/seg_common.h" #include "vp10/encoder/encoder.h" #include "vp10/encoder/quantize.h" #include "vp10/encoder/rd.h" void vp10_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; } void vp10_quantize_fp_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vp10_quantize_fp(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round_fp, p->quant_fp, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_quantize_b_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vpx_quantize_b(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round, p->quant, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_quantize_dc_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; (void)sc; vpx_quantize_dc(coeff_ptr, (int)n_coeffs, skip_block, p->round, p->quant_fp[0], qcoeff_ptr, dqcoeff_ptr, pd->dequant[0], eob_ptr); } #if CONFIG_VP9_HIGHBITDEPTH void vp10_highbd_quantize_fp_facade( const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vp10_highbd_quantize_fp(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round_fp, p->quant_fp, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_highbd_quantize_b_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vpx_highbd_quantize_b(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round, p->quant, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_highbd_quantize_dc_facade( const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; (void)sc; vpx_highbd_quantize_dc(coeff_ptr, (int)n_coeffs, skip_block, p->round, p->quant_fp[0], qcoeff_ptr, dqcoeff_ptr, pd->dequant[0], eob_ptr); } #endif // CONFIG_VP9_HIGHBITDEPTH void vp10_quantize_fp_32x32_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vp10_quantize_fp_32x32(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round_fp, p->quant_fp, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_quantize_b_32x32_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vpx_quantize_b_32x32(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round, p->quant, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_quantize_dc_32x32_facade(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; (void)sc; (void)n_coeffs; vpx_quantize_dc_32x32(coeff_ptr, skip_block, p->round, p->quant_fp[0], qcoeff_ptr, dqcoeff_ptr, pd->dequant[0], eob_ptr); } #if CONFIG_VP9_HIGHBITDEPTH void vp10_highbd_quantize_fp_32x32_facade( const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vp10_highbd_quantize_fp_32x32(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round_fp, p->quant_fp, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_highbd_quantize_b_32x32_facade( const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; vpx_highbd_quantize_b_32x32(coeff_ptr, n_coeffs, skip_block, p->zbin, p->round, p->quant, p->quant_shift, qcoeff_ptr, dqcoeff_ptr, pd->dequant, eob_ptr, sc->scan, sc->iscan); } void vp10_highbd_quantize_dc_32x32_facade( const tran_low_t *coeff_ptr, intptr_t n_coeffs, const MACROBLOCK_PLANE *p, tran_low_t *qcoeff_ptr, const MACROBLOCKD_PLANE *pd, tran_low_t *dqcoeff_ptr, uint16_t *eob_ptr, const scan_order *sc) { // obsolete skip_block const int skip_block = 0; (void)sc; (void)n_coeffs; vpx_highbd_quantize_dc_32x32(coeff_ptr, skip_block, p->round, p->quant_fp[0], qcoeff_ptr, dqcoeff_ptr, pd->dequant[0], eob_ptr); } #endif // CONFIG_VP9_HIGHBITDEPTH void vp10_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, 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)iscan; memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); if (!skip_block) { // Quantization pass: All coefficients with index >= zero_flag are // skippable. Note: zero_flag can be zero. for (i = 0; i < n_coeffs; i++) { const int rc = scan[i]; const int coeff = coeff_ptr[rc]; const int coeff_sign = (coeff >> 31); const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; int tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX); tmp = (tmp * quant_ptr[rc != 0]) >> 16; qcoeff_ptr[rc] = (tmp ^ coeff_sign) - coeff_sign; dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0]; if (tmp) eob = i; } } *eob_ptr = eob + 1; } #if CONFIG_VP9_HIGHBITDEPTH void vp10_highbd_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, 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)iscan; memset(qcoeff_ptr, 0, count * sizeof(*qcoeff_ptr)); 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 = abs_coeff + round_ptr[rc != 0]; const uint32_t abs_qcoeff = (uint32_t)((tmp * quant_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 // TODO(jingning) Refactor this file and combine functions with similar // operations. void vp10_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, uint16_t *eob_ptr, const int16_t *scan, const int16_t *iscan) { int i, eob = -1; (void)zbin_ptr; (void)quant_shift_ptr; (void)iscan; memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); if (!skip_block) { 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 vp10_highbd_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, uint16_t *eob_ptr, const int16_t *scan, const int16_t *iscan) { int i, eob = -1; (void)zbin_ptr; (void)quant_shift_ptr; (void)iscan; memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); if (!skip_block) { for (i = 0; i < n_coeffs; i++) { uint32_t abs_qcoeff = 0; 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 >= (dequant_ptr[rc != 0] >> 2)) { const int64_t tmp = abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1); abs_qcoeff = (uint32_t) ((tmp * quant_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 = i; } } *eob_ptr = eob + 1; } #endif void vp10_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) { vpx_highbd_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->eobs[block], scan, iscan); return; } #endif vpx_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->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 = vp10_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 vp10_init_quantizer(VP10_COMP *cpi) { VP10_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 ? vp10_dc_quant(q, cm->y_dc_delta_q, cm->bit_depth) : vp10_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; cpi->y_dequant[q][i] = quant; // uv quant = i == 0 ? vp10_dc_quant(q, cm->uv_dc_delta_q, cm->bit_depth) : vp10_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; cpi->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]; cpi->y_dequant[q][i] = cpi->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]; cpi->uv_dequant[q][i] = cpi->uv_dequant[q][1]; } } } void vp10_init_plane_quantizers(VP10_COMP *cpi, MACROBLOCK *x) { const VP10_COMMON *const cm = &cpi->common; MACROBLOCKD *const xd = &x->e_mbd; QUANTS *const quants = &cpi->quants; const int segment_id = xd->mi[0]->mbmi.segment_id; const int qindex = vp10_get_qindex(&cm->seg, segment_id, cm->base_qindex); const int rdmult = vp10_compute_rd_mult(cpi, qindex + cm->y_dc_delta_q); 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]; xd->plane[0].dequant = cpi->y_dequant[qindex]; x->plane[0].quant_thred[0] = x->plane[0].zbin[0] * x->plane[0].zbin[0]; x->plane[0].quant_thred[1] = x->plane[0].zbin[1] * x->plane[0].zbin[1]; // 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]; xd->plane[i].dequant = cpi->uv_dequant[qindex]; x->plane[i].quant_thred[0] = x->plane[i].zbin[0] * x->plane[i].zbin[0]; x->plane[i].quant_thred[1] = x->plane[i].zbin[1] * x->plane[i].zbin[1]; } x->skip_block = segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP); x->q_index = qindex; set_error_per_bit(x, rdmult); vp10_initialize_me_consts(cpi, x, x->q_index); } void vp10_frame_init_quantizer(VP10_COMP *cpi) { vp10_init_plane_quantizers(cpi, &cpi->td.mb); } void vp10_set_quantizer(VP10_COMMON *cm, int q) { // quantizer has to be reinitialized with vp10_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 vp10_quantizer_to_qindex(int quantizer) { return quantizer_to_qindex[quantizer]; } int vp10_qindex_to_quantizer(int qindex) { int quantizer; for (quantizer = 0; quantizer < 64; ++quantizer) if (quantizer_to_qindex[quantizer] >= qindex) return quantizer; return 63; }