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1946 lines
68 KiB
C
1946 lines
68 KiB
C
/*
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* Copyright (c) 2017, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include "av1/common/scan.h"
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#include "av1/common/blockd.h"
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#include "av1/common/idct.h"
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#include "av1/common/pred_common.h"
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#include "av1/encoder/bitstream.h"
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#include "av1/encoder/encodeframe.h"
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#include "av1/encoder/cost.h"
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#include "av1/encoder/encodetxb.h"
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#include "av1/encoder/rdopt.h"
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#include "av1/encoder/subexp.h"
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#include "av1/encoder/tokenize.h"
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#define TEST_OPTIMIZE_TXB 0
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void av1_alloc_txb_buf(AV1_COMP *cpi) {
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#if 0
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AV1_COMMON *cm = &cpi->common;
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int mi_block_size = 1 << MI_SIZE_LOG2;
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// TODO(angiebird): Make sure cm->subsampling_x/y is set correctly, and then
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// use precise buffer size according to cm->subsampling_x/y
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int pixel_stride = mi_block_size * cm->mi_cols;
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int pixel_height = mi_block_size * cm->mi_rows;
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int i;
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for (i = 0; i < MAX_MB_PLANE; ++i) {
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CHECK_MEM_ERROR(
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cm, cpi->tcoeff_buf[i],
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aom_malloc(sizeof(*cpi->tcoeff_buf[i]) * pixel_stride * pixel_height));
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}
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#else
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(void)cpi;
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#endif
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}
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void av1_free_txb_buf(AV1_COMP *cpi) {
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#if 0
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int i;
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for (i = 0; i < MAX_MB_PLANE; ++i) {
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aom_free(cpi->tcoeff_buf[i]);
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}
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#else
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(void)cpi;
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#endif
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}
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static void write_golomb(aom_writer *w, int level) {
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int x = level + 1;
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int i = x;
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int length = 0;
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while (i) {
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i >>= 1;
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++length;
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}
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assert(length > 0);
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for (i = 0; i < length - 1; ++i) aom_write_bit(w, 0);
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for (i = length - 1; i >= 0; --i) aom_write_bit(w, (x >> i) & 0x01);
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}
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void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
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aom_writer *w, int blk_row, int blk_col, int block,
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int plane, TX_SIZE tx_size, const tran_low_t *tcoeff,
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uint16_t eob, TXB_CTX *txb_ctx) {
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aom_prob *nz_map;
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aom_prob *eob_flag;
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MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
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const PLANE_TYPE plane_type = get_plane_type(plane);
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const TX_SIZE txs_ctx = get_txsize_context(tx_size);
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const TX_TYPE tx_type =
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av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
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const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
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const int16_t *scan = scan_order->scan;
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const int16_t *iscan = scan_order->iscan;
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int c;
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int is_nz;
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const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
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const int height = tx_size_high[tx_size];
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const int seg_eob = tx_size_2d[tx_size];
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uint16_t update_eob = 0;
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(void)blk_row;
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(void)blk_col;
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aom_write(w, eob == 0, cm->fc->txb_skip[txs_ctx][txb_ctx->txb_skip_ctx]);
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if (eob == 0) return;
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#if CONFIG_TXK_SEL
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av1_write_tx_type(cm, xd, blk_row, blk_col, block, plane,
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get_min_tx_size(tx_size), w);
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#endif
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nz_map = cm->fc->nz_map[txs_ctx][plane_type];
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eob_flag = cm->fc->eob_flag[txs_ctx][plane_type];
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for (c = 0; c < eob; ++c) {
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int coeff_ctx = get_nz_map_ctx(tcoeff, scan[c], bwl, height, iscan);
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int eob_ctx = get_eob_ctx(tcoeff, scan[c], txs_ctx);
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tran_low_t v = tcoeff[scan[c]];
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is_nz = (v != 0);
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if (c == seg_eob - 1) break;
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aom_write(w, is_nz, nz_map[coeff_ctx]);
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if (is_nz) {
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aom_write(w, c == (eob - 1), eob_flag[eob_ctx]);
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}
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}
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int i;
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for (i = 0; i < NUM_BASE_LEVELS; ++i) {
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aom_prob *coeff_base = cm->fc->coeff_base[txs_ctx][plane_type][i];
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update_eob = 0;
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for (c = eob - 1; c >= 0; --c) {
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tran_low_t v = tcoeff[scan[c]];
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tran_low_t level = abs(v);
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int sign = (v < 0) ? 1 : 0;
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int ctx;
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if (level <= i) continue;
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ctx = get_base_ctx(tcoeff, scan[c], bwl, height, i + 1);
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if (level == i + 1) {
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aom_write(w, 1, coeff_base[ctx]);
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if (c == 0) {
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aom_write(w, sign, cm->fc->dc_sign[plane_type][txb_ctx->dc_sign_ctx]);
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} else {
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aom_write_bit(w, sign);
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}
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continue;
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}
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aom_write(w, 0, coeff_base[ctx]);
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update_eob = AOMMAX(update_eob, c);
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}
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}
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for (c = update_eob; c >= 0; --c) {
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tran_low_t v = tcoeff[scan[c]];
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tran_low_t level = abs(v);
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int sign = (v < 0) ? 1 : 0;
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int idx;
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int ctx;
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if (level <= NUM_BASE_LEVELS) continue;
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if (c == 0) {
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aom_write(w, sign, cm->fc->dc_sign[plane_type][txb_ctx->dc_sign_ctx]);
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} else {
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aom_write_bit(w, sign);
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}
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// level is above 1.
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ctx = get_br_ctx(tcoeff, scan[c], bwl, height);
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for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) {
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if (level == (idx + 1 + NUM_BASE_LEVELS)) {
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aom_write(w, 1, cm->fc->coeff_lps[txs_ctx][plane_type][ctx]);
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break;
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}
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aom_write(w, 0, cm->fc->coeff_lps[txs_ctx][plane_type][ctx]);
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}
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if (idx < COEFF_BASE_RANGE) continue;
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// use 0-th order Golomb code to handle the residual level.
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write_golomb(w, level - COEFF_BASE_RANGE - 1 - NUM_BASE_LEVELS);
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}
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}
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void av1_write_coeffs_mb(const AV1_COMMON *const cm, MACROBLOCK *x,
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aom_writer *w, int plane) {
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MACROBLOCKD *xd = &x->e_mbd;
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MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
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BLOCK_SIZE bsize = mbmi->sb_type;
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struct macroblockd_plane *pd = &xd->plane[plane];
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#if CONFIG_CHROMA_SUB8X8
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const BLOCK_SIZE plane_bsize =
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AOMMAX(BLOCK_4X4, get_plane_block_size(bsize, pd));
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#elif CONFIG_CB4X4
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const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd);
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#else
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const BLOCK_SIZE plane_bsize =
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get_plane_block_size(AOMMAX(bsize, BLOCK_8X8), pd);
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#endif
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const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);
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const int max_blocks_high = max_block_high(xd, plane_bsize, plane);
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const TX_SIZE tx_size = av1_get_tx_size(plane, xd);
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const int bkw = tx_size_wide_unit[tx_size];
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const int bkh = tx_size_high_unit[tx_size];
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const int step = tx_size_wide_unit[tx_size] * tx_size_high_unit[tx_size];
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int row, col;
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int block = 0;
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for (row = 0; row < max_blocks_high; row += bkh) {
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for (col = 0; col < max_blocks_wide; col += bkw) {
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tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block);
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uint16_t eob = x->mbmi_ext->eobs[plane][block];
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TXB_CTX txb_ctx = { x->mbmi_ext->txb_skip_ctx[plane][block],
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x->mbmi_ext->dc_sign_ctx[plane][block] };
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av1_write_coeffs_txb(cm, xd, w, row, col, block, plane, tx_size, tcoeff,
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eob, &txb_ctx);
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block += step;
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}
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}
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}
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static INLINE void get_base_ctx_set(const tran_low_t *tcoeffs,
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int c, // raster order
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const int bwl, const int height,
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int ctx_set[NUM_BASE_LEVELS]) {
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const int row = c >> bwl;
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const int col = c - (row << bwl);
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const int stride = 1 << bwl;
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int mag[NUM_BASE_LEVELS] = { 0 };
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int idx;
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tran_low_t abs_coeff;
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int i;
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for (idx = 0; idx < BASE_CONTEXT_POSITION_NUM; ++idx) {
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int ref_row = row + base_ref_offset[idx][0];
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int ref_col = col + base_ref_offset[idx][1];
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int pos = (ref_row << bwl) + ref_col;
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if (ref_row < 0 || ref_col < 0 || ref_row >= height || ref_col >= stride)
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continue;
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abs_coeff = abs(tcoeffs[pos]);
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for (i = 0; i < NUM_BASE_LEVELS; ++i) {
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ctx_set[i] += abs_coeff > i;
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if (base_ref_offset[idx][0] >= 0 && base_ref_offset[idx][1] >= 0)
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mag[i] |= abs_coeff > (i + 1);
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}
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}
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for (i = 0; i < NUM_BASE_LEVELS; ++i) {
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ctx_set[i] = (ctx_set[i] + 1) >> 1;
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if (row == 0 && col == 0)
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ctx_set[i] = (ctx_set[i] << 1) + mag[i];
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else if (row == 0)
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ctx_set[i] = 8 + (ctx_set[i] << 1) + mag[i];
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else if (col == 0)
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ctx_set[i] = 18 + (ctx_set[i] << 1) + mag[i];
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else
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ctx_set[i] = 28 + (ctx_set[i] << 1) + mag[i];
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}
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return;
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}
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static INLINE int get_br_cost(tran_low_t abs_qc, int ctx,
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const aom_prob *coeff_lps) {
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const tran_low_t min_level = 1 + NUM_BASE_LEVELS;
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const tran_low_t max_level = 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE;
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if (abs_qc >= min_level) {
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const int cost0 = av1_cost_bit(coeff_lps[ctx], 0);
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const int cost1 = av1_cost_bit(coeff_lps[ctx], 1);
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if (abs_qc >= max_level)
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return COEFF_BASE_RANGE * cost0;
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else
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return (abs_qc - min_level) * cost0 + cost1;
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} else {
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return 0;
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}
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}
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static INLINE int get_base_cost(tran_low_t abs_qc, int ctx,
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aom_prob (*coeff_base)[COEFF_BASE_CONTEXTS],
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int base_idx) {
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const int level = base_idx + 1;
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if (abs_qc < level)
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return 0;
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else
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return av1_cost_bit(coeff_base[base_idx][ctx], abs_qc == level);
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}
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int av1_cost_coeffs_txb(const AV1_COMP *const cpi, MACROBLOCK *x, int plane,
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int blk_row, int blk_col, int block, TX_SIZE tx_size,
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TXB_CTX *txb_ctx) {
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const AV1_COMMON *const cm = &cpi->common;
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MACROBLOCKD *const xd = &x->e_mbd;
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TX_SIZE txs_ctx = get_txsize_context(tx_size);
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const PLANE_TYPE plane_type = get_plane_type(plane);
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const TX_TYPE tx_type =
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av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
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MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
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const struct macroblock_plane *p = &x->plane[plane];
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const int eob = p->eobs[block];
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const tran_low_t *const qcoeff = BLOCK_OFFSET(p->qcoeff, block);
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int c, cost;
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const int seg_eob = AOMMIN(eob, tx_size_2d[tx_size] - 1);
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int txb_skip_ctx = txb_ctx->txb_skip_ctx;
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aom_prob *nz_map = xd->fc->nz_map[txs_ctx][plane_type];
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const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
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const int height = tx_size_high[tx_size];
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aom_prob(*coeff_base)[COEFF_BASE_CONTEXTS] =
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xd->fc->coeff_base[txs_ctx][plane_type];
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const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
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const int16_t *scan = scan_order->scan;
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const int16_t *iscan = scan_order->iscan;
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cost = 0;
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if (eob == 0) {
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cost = av1_cost_bit(xd->fc->txb_skip[txs_ctx][txb_skip_ctx], 1);
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return cost;
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}
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cost = av1_cost_bit(xd->fc->txb_skip[txs_ctx][txb_skip_ctx], 0);
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#if CONFIG_TXK_SEL
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cost += av1_tx_type_cost(cpi, xd, mbmi->sb_type, plane, tx_size, tx_type);
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#endif
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for (c = 0; c < eob; ++c) {
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tran_low_t v = qcoeff[scan[c]];
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int is_nz = (v != 0);
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int level = abs(v);
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if (c < seg_eob) {
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int coeff_ctx = get_nz_map_ctx(qcoeff, scan[c], bwl, height, iscan);
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cost += av1_cost_bit(nz_map[coeff_ctx], is_nz);
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}
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if (is_nz) {
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int ctx_ls[NUM_BASE_LEVELS] = { 0 };
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int sign = (v < 0) ? 1 : 0;
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// sign bit cost
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if (c == 0) {
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int dc_sign_ctx = txb_ctx->dc_sign_ctx;
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cost += av1_cost_bit(xd->fc->dc_sign[plane_type][dc_sign_ctx], sign);
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} else {
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cost += av1_cost_bit(128, sign);
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}
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get_base_ctx_set(qcoeff, scan[c], bwl, height, ctx_ls);
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int i;
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for (i = 0; i < NUM_BASE_LEVELS; ++i) {
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if (level <= i) continue;
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if (level == i + 1) {
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cost += av1_cost_bit(coeff_base[i][ctx_ls[i]], 1);
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continue;
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}
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cost += av1_cost_bit(coeff_base[i][ctx_ls[i]], 0);
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}
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if (level > NUM_BASE_LEVELS) {
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int idx;
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int ctx;
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ctx = get_br_ctx(qcoeff, scan[c], bwl, height);
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for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) {
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if (level == (idx + 1 + NUM_BASE_LEVELS)) {
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cost +=
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av1_cost_bit(xd->fc->coeff_lps[txs_ctx][plane_type][ctx], 1);
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break;
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}
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cost += av1_cost_bit(xd->fc->coeff_lps[txs_ctx][plane_type][ctx], 0);
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}
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if (idx >= COEFF_BASE_RANGE) {
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// residual cost
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int r = level - COEFF_BASE_RANGE - NUM_BASE_LEVELS;
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int ri = r;
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int length = 0;
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while (ri) {
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ri >>= 1;
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++length;
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}
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for (ri = 0; ri < length - 1; ++ri) cost += av1_cost_bit(128, 0);
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for (ri = length - 1; ri >= 0; --ri)
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cost += av1_cost_bit(128, (r >> ri) & 0x01);
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}
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}
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if (c < seg_eob) {
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int eob_ctx = get_eob_ctx(qcoeff, scan[c], txs_ctx);
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cost += av1_cost_bit(xd->fc->eob_flag[txs_ctx][plane_type][eob_ctx],
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c == (eob - 1));
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}
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}
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}
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return cost;
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}
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static INLINE int has_base(tran_low_t qc, int base_idx) {
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const int level = base_idx + 1;
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return abs(qc) >= level;
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}
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static void gen_base_count_mag_arr(int (*base_count_arr)[MAX_TX_SQUARE],
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int (*base_mag_arr)[2],
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const tran_low_t *qcoeff, int stride,
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int height, int eob, const int16_t *scan) {
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for (int c = 0; c < eob; ++c) {
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const int coeff_idx = scan[c]; // raster order
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if (!has_base(qcoeff[coeff_idx], 0)) continue;
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const int row = coeff_idx / stride;
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const int col = coeff_idx % stride;
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int *mag = base_mag_arr[coeff_idx];
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get_mag(mag, qcoeff, stride, height, row, col, base_ref_offset,
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BASE_CONTEXT_POSITION_NUM);
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for (int i = 0; i < NUM_BASE_LEVELS; ++i) {
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if (!has_base(qcoeff[coeff_idx], i)) continue;
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int *count = base_count_arr[i] + coeff_idx;
|
|
*count = get_level_count(qcoeff, stride, height, row, col, i,
|
|
base_ref_offset, BASE_CONTEXT_POSITION_NUM);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void gen_nz_count_arr(int(*nz_count_arr), const tran_low_t *qcoeff,
|
|
int stride, int height, int eob,
|
|
const SCAN_ORDER *scan_order) {
|
|
const int16_t *scan = scan_order->scan;
|
|
const int16_t *iscan = scan_order->iscan;
|
|
for (int c = 0; c < eob; ++c) {
|
|
const int coeff_idx = scan[c]; // raster order
|
|
const int row = coeff_idx / stride;
|
|
const int col = coeff_idx % stride;
|
|
nz_count_arr[coeff_idx] =
|
|
get_nz_count(qcoeff, stride, height, row, col, iscan);
|
|
}
|
|
}
|
|
|
|
static void gen_nz_ctx_arr(int (*nz_ctx_arr)[2], int(*nz_count_arr),
|
|
const tran_low_t *qcoeff, int bwl, int eob,
|
|
const SCAN_ORDER *scan_order) {
|
|
const int16_t *scan = scan_order->scan;
|
|
const int16_t *iscan = scan_order->iscan;
|
|
for (int c = 0; c < eob; ++c) {
|
|
const int coeff_idx = scan[c]; // raster order
|
|
const int count = nz_count_arr[coeff_idx];
|
|
nz_ctx_arr[coeff_idx][0] =
|
|
get_nz_map_ctx_from_count(count, qcoeff, coeff_idx, bwl, iscan);
|
|
}
|
|
}
|
|
|
|
static void gen_base_ctx_arr(int (*base_ctx_arr)[MAX_TX_SQUARE][2],
|
|
int (*base_count_arr)[MAX_TX_SQUARE],
|
|
int (*base_mag_arr)[2], const tran_low_t *qcoeff,
|
|
int stride, int eob, const int16_t *scan) {
|
|
(void)qcoeff;
|
|
for (int i = 0; i < NUM_BASE_LEVELS; ++i) {
|
|
for (int c = 0; c < eob; ++c) {
|
|
const int coeff_idx = scan[c]; // raster order
|
|
if (!has_base(qcoeff[coeff_idx], i)) continue;
|
|
const int row = coeff_idx / stride;
|
|
const int col = coeff_idx % stride;
|
|
const int count = base_count_arr[i][coeff_idx];
|
|
const int *mag = base_mag_arr[coeff_idx];
|
|
const int level = i + 1;
|
|
base_ctx_arr[i][coeff_idx][0] =
|
|
get_base_ctx_from_count_mag(row, col, count, mag[0], level);
|
|
}
|
|
}
|
|
}
|
|
|
|
static INLINE int has_br(tran_low_t qc) {
|
|
return abs(qc) >= 1 + NUM_BASE_LEVELS;
|
|
}
|
|
|
|
static void gen_br_count_mag_arr(int *br_count_arr, int (*br_mag_arr)[2],
|
|
const tran_low_t *qcoeff, int stride,
|
|
int height, int eob, const int16_t *scan) {
|
|
for (int c = 0; c < eob; ++c) {
|
|
const int coeff_idx = scan[c]; // raster order
|
|
if (!has_br(qcoeff[coeff_idx])) continue;
|
|
const int row = coeff_idx / stride;
|
|
const int col = coeff_idx % stride;
|
|
int *count = br_count_arr + coeff_idx;
|
|
int *mag = br_mag_arr[coeff_idx];
|
|
*count = get_level_count(qcoeff, stride, height, row, col, NUM_BASE_LEVELS,
|
|
br_ref_offset, BR_CONTEXT_POSITION_NUM);
|
|
get_mag(mag, qcoeff, stride, height, row, col, br_ref_offset,
|
|
BR_CONTEXT_POSITION_NUM);
|
|
}
|
|
}
|
|
|
|
static void gen_br_ctx_arr(int (*br_ctx_arr)[2], const int *br_count_arr,
|
|
int (*br_mag_arr)[2], const tran_low_t *qcoeff,
|
|
int stride, int eob, const int16_t *scan) {
|
|
(void)qcoeff;
|
|
for (int c = 0; c < eob; ++c) {
|
|
const int coeff_idx = scan[c]; // raster order
|
|
if (!has_br(qcoeff[coeff_idx])) continue;
|
|
const int row = coeff_idx / stride;
|
|
const int col = coeff_idx % stride;
|
|
const int count = br_count_arr[coeff_idx];
|
|
const int *mag = br_mag_arr[coeff_idx];
|
|
br_ctx_arr[coeff_idx][0] =
|
|
get_br_ctx_from_count_mag(row, col, count, mag[0]);
|
|
}
|
|
}
|
|
|
|
static INLINE int get_sign_bit_cost(tran_low_t qc, int coeff_idx,
|
|
const aom_prob *dc_sign_prob,
|
|
int dc_sign_ctx) {
|
|
const int sign = (qc < 0) ? 1 : 0;
|
|
// sign bit cost
|
|
if (coeff_idx == 0) {
|
|
return av1_cost_bit(dc_sign_prob[dc_sign_ctx], sign);
|
|
} else {
|
|
return av1_cost_bit(128, sign);
|
|
}
|
|
}
|
|
static INLINE int get_golomb_cost(int abs_qc) {
|
|
if (abs_qc >= 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) {
|
|
// residual cost
|
|
int r = abs_qc - COEFF_BASE_RANGE - NUM_BASE_LEVELS;
|
|
int ri = r;
|
|
int length = 0;
|
|
|
|
while (ri) {
|
|
ri >>= 1;
|
|
++length;
|
|
}
|
|
|
|
return av1_cost_literal(2 * length - 1);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// TODO(angiebird): add static once this function is called
|
|
void gen_txb_cache(TxbCache *txb_cache, TxbInfo *txb_info) {
|
|
const int16_t *scan = txb_info->scan_order->scan;
|
|
gen_nz_count_arr(txb_cache->nz_count_arr, txb_info->qcoeff, txb_info->stride,
|
|
txb_info->height, txb_info->eob, txb_info->scan_order);
|
|
gen_nz_ctx_arr(txb_cache->nz_ctx_arr, txb_cache->nz_count_arr,
|
|
txb_info->qcoeff, txb_info->bwl, txb_info->eob,
|
|
txb_info->scan_order);
|
|
gen_base_count_mag_arr(txb_cache->base_count_arr, txb_cache->base_mag_arr,
|
|
txb_info->qcoeff, txb_info->stride, txb_info->height,
|
|
txb_info->eob, scan);
|
|
gen_base_ctx_arr(txb_cache->base_ctx_arr, txb_cache->base_count_arr,
|
|
txb_cache->base_mag_arr, txb_info->qcoeff, txb_info->stride,
|
|
txb_info->eob, scan);
|
|
gen_br_count_mag_arr(txb_cache->br_count_arr, txb_cache->br_mag_arr,
|
|
txb_info->qcoeff, txb_info->stride, txb_info->height,
|
|
txb_info->eob, scan);
|
|
gen_br_ctx_arr(txb_cache->br_ctx_arr, txb_cache->br_count_arr,
|
|
txb_cache->br_mag_arr, txb_info->qcoeff, txb_info->stride,
|
|
txb_info->eob, scan);
|
|
}
|
|
|
|
static INLINE aom_prob get_level_prob(int level, int coeff_idx,
|
|
const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs) {
|
|
if (level == 0) {
|
|
const int ctx = txb_cache->nz_ctx_arr[coeff_idx][0];
|
|
return txb_probs->nz_map[ctx];
|
|
} else if (level >= 1 && level < 1 + NUM_BASE_LEVELS) {
|
|
const int idx = level - 1;
|
|
const int ctx = txb_cache->base_ctx_arr[idx][coeff_idx][0];
|
|
return txb_probs->coeff_base[idx][ctx];
|
|
} else if (level >= 1 + NUM_BASE_LEVELS &&
|
|
level < 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) {
|
|
const int ctx = txb_cache->br_ctx_arr[coeff_idx][0];
|
|
return txb_probs->coeff_lps[ctx];
|
|
} else if (level >= 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) {
|
|
printf("get_level_prob does not support golomb\n");
|
|
assert(0);
|
|
return 0;
|
|
} else {
|
|
assert(0);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static INLINE tran_low_t get_lower_coeff(tran_low_t qc) {
|
|
if (qc == 0) {
|
|
return 0;
|
|
}
|
|
return qc > 0 ? qc - 1 : qc + 1;
|
|
}
|
|
|
|
static INLINE void update_mag_arr(int *mag_arr, int abs_qc) {
|
|
if (mag_arr[0] == abs_qc) {
|
|
mag_arr[1] -= 1;
|
|
assert(mag_arr[1] >= 0);
|
|
}
|
|
}
|
|
|
|
static INLINE int get_mag_from_mag_arr(const int *mag_arr) {
|
|
int mag;
|
|
if (mag_arr[1] > 0) {
|
|
mag = mag_arr[0];
|
|
} else if (mag_arr[0] > 0) {
|
|
mag = mag_arr[0] - 1;
|
|
} else {
|
|
// no neighbor
|
|
assert(mag_arr[0] == 0 && mag_arr[1] == 0);
|
|
mag = 0;
|
|
}
|
|
return mag;
|
|
}
|
|
|
|
static int neighbor_level_down_update(int *new_count, int *new_mag, int count,
|
|
const int *mag, int coeff_idx,
|
|
tran_low_t abs_nb_coeff, int nb_coeff_idx,
|
|
int level, const TxbInfo *txb_info) {
|
|
*new_count = count;
|
|
*new_mag = get_mag_from_mag_arr(mag);
|
|
|
|
int update = 0;
|
|
// check if br_count changes
|
|
if (abs_nb_coeff == level) {
|
|
update = 1;
|
|
*new_count -= 1;
|
|
assert(*new_count >= 0);
|
|
}
|
|
const int row = coeff_idx >> txb_info->bwl;
|
|
const int col = coeff_idx - (row << txb_info->bwl);
|
|
const int nb_row = nb_coeff_idx >> txb_info->bwl;
|
|
const int nb_col = nb_coeff_idx - (nb_row << txb_info->bwl);
|
|
|
|
// check if mag changes
|
|
if (nb_row >= row && nb_col >= col) {
|
|
if (abs_nb_coeff == mag[0]) {
|
|
assert(mag[1] > 0);
|
|
if (mag[1] == 1) {
|
|
// the nb is the only qc with max mag
|
|
*new_mag -= 1;
|
|
assert(*new_mag >= 0);
|
|
update = 1;
|
|
}
|
|
}
|
|
}
|
|
return update;
|
|
}
|
|
|
|
static int try_neighbor_level_down_br(int coeff_idx, int nb_coeff_idx,
|
|
const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs,
|
|
const TxbInfo *txb_info) {
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
const tran_low_t abs_qc = abs(qc);
|
|
const int level = NUM_BASE_LEVELS + 1;
|
|
if (abs_qc < level) return 0;
|
|
|
|
const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx];
|
|
const tran_low_t abs_nb_coeff = abs(nb_coeff);
|
|
const int count = txb_cache->br_count_arr[coeff_idx];
|
|
const int *mag = txb_cache->br_mag_arr[coeff_idx];
|
|
int new_count;
|
|
int new_mag;
|
|
const int update =
|
|
neighbor_level_down_update(&new_count, &new_mag, count, mag, coeff_idx,
|
|
abs_nb_coeff, nb_coeff_idx, level, txb_info);
|
|
if (update) {
|
|
const int row = coeff_idx >> txb_info->bwl;
|
|
const int col = coeff_idx - (row << txb_info->bwl);
|
|
const int ctx = txb_cache->br_ctx_arr[coeff_idx][0];
|
|
const int org_cost = get_br_cost(abs_qc, ctx, txb_probs->coeff_lps);
|
|
|
|
const int new_ctx = get_br_ctx_from_count_mag(row, col, new_count, new_mag);
|
|
const int new_cost = get_br_cost(abs_qc, new_ctx, txb_probs->coeff_lps);
|
|
const int cost_diff = -org_cost + new_cost;
|
|
return cost_diff;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int try_neighbor_level_down_base(int coeff_idx, int nb_coeff_idx,
|
|
const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs,
|
|
const TxbInfo *txb_info) {
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
const tran_low_t abs_qc = abs(qc);
|
|
|
|
int cost_diff = 0;
|
|
for (int base_idx = 0; base_idx < NUM_BASE_LEVELS; ++base_idx) {
|
|
const int level = base_idx + 1;
|
|
if (abs_qc < level) continue;
|
|
|
|
const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx];
|
|
const tran_low_t abs_nb_coeff = abs(nb_coeff);
|
|
|
|
const int count = txb_cache->base_count_arr[base_idx][coeff_idx];
|
|
const int *mag = txb_cache->base_mag_arr[coeff_idx];
|
|
int new_count;
|
|
int new_mag;
|
|
const int update =
|
|
neighbor_level_down_update(&new_count, &new_mag, count, mag, coeff_idx,
|
|
abs_nb_coeff, nb_coeff_idx, level, txb_info);
|
|
if (update) {
|
|
const int row = coeff_idx >> txb_info->bwl;
|
|
const int col = coeff_idx - (row << txb_info->bwl);
|
|
const int ctx = txb_cache->base_ctx_arr[base_idx][coeff_idx][0];
|
|
const int org_cost =
|
|
get_base_cost(abs_qc, ctx, txb_probs->coeff_base, base_idx);
|
|
|
|
const int new_ctx =
|
|
get_base_ctx_from_count_mag(row, col, new_count, new_mag, level);
|
|
const int new_cost =
|
|
get_base_cost(abs_qc, new_ctx, txb_probs->coeff_base, base_idx);
|
|
cost_diff += -org_cost + new_cost;
|
|
}
|
|
}
|
|
return cost_diff;
|
|
}
|
|
|
|
static int try_neighbor_level_down_nz(int coeff_idx, int nb_coeff_idx,
|
|
const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs,
|
|
TxbInfo *txb_info) {
|
|
// assume eob doesn't change
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
const tran_low_t abs_qc = abs(qc);
|
|
const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx];
|
|
const tran_low_t abs_nb_coeff = abs(nb_coeff);
|
|
if (abs_nb_coeff != 1) return 0;
|
|
const int16_t *iscan = txb_info->scan_order->iscan;
|
|
const int scan_idx = iscan[coeff_idx];
|
|
if (scan_idx == txb_info->seg_eob) return 0;
|
|
const int nb_scan_idx = iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < scan_idx) {
|
|
const int count = txb_cache->nz_count_arr[coeff_idx];
|
|
assert(count > 0);
|
|
txb_info->qcoeff[nb_coeff_idx] = get_lower_coeff(nb_coeff);
|
|
const int new_ctx = get_nz_map_ctx_from_count(
|
|
count - 1, txb_info->qcoeff, coeff_idx, txb_info->bwl, iscan);
|
|
txb_info->qcoeff[nb_coeff_idx] = nb_coeff;
|
|
const int ctx = txb_cache->nz_ctx_arr[coeff_idx][0];
|
|
const int is_nz = abs_qc > 0;
|
|
const int org_cost = av1_cost_bit(txb_probs->nz_map[ctx], is_nz);
|
|
const int new_cost = av1_cost_bit(txb_probs->nz_map[new_ctx], is_nz);
|
|
const int cost_diff = new_cost - org_cost;
|
|
return cost_diff;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int try_self_level_down(tran_low_t *low_coeff, int coeff_idx,
|
|
const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs, TxbInfo *txb_info) {
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
if (qc == 0) {
|
|
*low_coeff = 0;
|
|
return 0;
|
|
}
|
|
const tran_low_t abs_qc = abs(qc);
|
|
*low_coeff = get_lower_coeff(qc);
|
|
int cost_diff;
|
|
if (*low_coeff == 0) {
|
|
const int scan_idx = txb_info->scan_order->iscan[coeff_idx];
|
|
const aom_prob level_prob =
|
|
get_level_prob(abs_qc, coeff_idx, txb_cache, txb_probs);
|
|
const aom_prob low_level_prob =
|
|
get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_probs);
|
|
if (scan_idx < txb_info->seg_eob) {
|
|
// When level-0, we code the binary of abs_qc > level
|
|
// but when level-k k > 0 we code the binary of abs_qc == level
|
|
// That's why wee need this special treatment for level-0 map
|
|
// TODO(angiebird): make leve-0 consistent to other levels
|
|
cost_diff = -av1_cost_bit(level_prob, 1) +
|
|
av1_cost_bit(low_level_prob, 0) -
|
|
av1_cost_bit(low_level_prob, 1);
|
|
} else {
|
|
cost_diff = -av1_cost_bit(level_prob, 1);
|
|
}
|
|
|
|
if (scan_idx < txb_info->seg_eob) {
|
|
const int eob_ctx =
|
|
get_eob_ctx(txb_info->qcoeff, coeff_idx, txb_info->txs_ctx);
|
|
cost_diff -= av1_cost_bit(txb_probs->eob_flag[eob_ctx],
|
|
scan_idx == (txb_info->eob - 1));
|
|
}
|
|
|
|
const int sign_cost = get_sign_bit_cost(
|
|
qc, coeff_idx, txb_probs->dc_sign_prob, txb_info->txb_ctx->dc_sign_ctx);
|
|
cost_diff -= sign_cost;
|
|
} else if (abs_qc < 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) {
|
|
const aom_prob level_prob =
|
|
get_level_prob(abs_qc, coeff_idx, txb_cache, txb_probs);
|
|
const aom_prob low_level_prob =
|
|
get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_probs);
|
|
cost_diff = -av1_cost_bit(level_prob, 1) + av1_cost_bit(low_level_prob, 1) -
|
|
av1_cost_bit(low_level_prob, 0);
|
|
} else if (abs_qc == 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) {
|
|
const aom_prob low_level_prob =
|
|
get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_probs);
|
|
cost_diff = -get_golomb_cost(abs_qc) + av1_cost_bit(low_level_prob, 1) -
|
|
av1_cost_bit(low_level_prob, 0);
|
|
} else {
|
|
assert(abs_qc > 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE);
|
|
const tran_low_t abs_low_coeff = abs(*low_coeff);
|
|
cost_diff = -get_golomb_cost(abs_qc) + get_golomb_cost(abs_low_coeff);
|
|
}
|
|
return cost_diff;
|
|
}
|
|
|
|
#define COST_MAP_SIZE 5
|
|
#define COST_MAP_OFFSET 2
|
|
|
|
static INLINE int check_nz_neighbor(tran_low_t qc) { return abs(qc) == 1; }
|
|
|
|
static INLINE int check_base_neighbor(tran_low_t qc) {
|
|
return abs(qc) <= 1 + NUM_BASE_LEVELS;
|
|
}
|
|
|
|
static INLINE int check_br_neighbor(tran_low_t qc) {
|
|
return abs(qc) > BR_MAG_OFFSET;
|
|
}
|
|
|
|
// TODO(angiebird): add static to this function once it's called
|
|
int try_level_down(int coeff_idx, const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs, TxbInfo *txb_info,
|
|
int (*cost_map)[COST_MAP_SIZE]) {
|
|
if (cost_map) {
|
|
for (int i = 0; i < COST_MAP_SIZE; ++i) av1_zero(cost_map[i]);
|
|
}
|
|
|
|
tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
tran_low_t low_coeff;
|
|
if (qc == 0) return 0;
|
|
int accu_cost_diff = 0;
|
|
|
|
const int16_t *iscan = txb_info->scan_order->iscan;
|
|
const int eob = txb_info->eob;
|
|
const int scan_idx = iscan[coeff_idx];
|
|
if (scan_idx < eob) {
|
|
const int cost_diff = try_self_level_down(&low_coeff, coeff_idx, txb_cache,
|
|
txb_probs, txb_info);
|
|
if (cost_map)
|
|
cost_map[0 + COST_MAP_OFFSET][0 + COST_MAP_OFFSET] = cost_diff;
|
|
accu_cost_diff += cost_diff;
|
|
}
|
|
|
|
const int row = coeff_idx >> txb_info->bwl;
|
|
const int col = coeff_idx - (row << txb_info->bwl);
|
|
if (check_nz_neighbor(qc)) {
|
|
for (int i = 0; i < SIG_REF_OFFSET_NUM; ++i) {
|
|
const int nb_row = row - sig_ref_offset[i][0];
|
|
const int nb_col = col - sig_ref_offset[i][1];
|
|
const int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
|
|
if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height &&
|
|
nb_col < txb_info->stride))
|
|
continue;
|
|
|
|
const int nb_scan_idx = iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < eob) {
|
|
const int cost_diff = try_neighbor_level_down_nz(
|
|
nb_coeff_idx, coeff_idx, txb_cache, txb_probs, txb_info);
|
|
if (cost_map)
|
|
cost_map[nb_row - row + COST_MAP_OFFSET]
|
|
[nb_col - col + COST_MAP_OFFSET] += cost_diff;
|
|
accu_cost_diff += cost_diff;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (check_base_neighbor(qc)) {
|
|
for (int i = 0; i < BASE_CONTEXT_POSITION_NUM; ++i) {
|
|
const int nb_row = row - base_ref_offset[i][0];
|
|
const int nb_col = col - base_ref_offset[i][1];
|
|
const int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
|
|
if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height &&
|
|
nb_col < txb_info->stride))
|
|
continue;
|
|
|
|
const int nb_scan_idx = iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < eob) {
|
|
const int cost_diff = try_neighbor_level_down_base(
|
|
nb_coeff_idx, coeff_idx, txb_cache, txb_probs, txb_info);
|
|
if (cost_map)
|
|
cost_map[nb_row - row + COST_MAP_OFFSET]
|
|
[nb_col - col + COST_MAP_OFFSET] += cost_diff;
|
|
accu_cost_diff += cost_diff;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (check_br_neighbor(qc)) {
|
|
for (int i = 0; i < BR_CONTEXT_POSITION_NUM; ++i) {
|
|
const int nb_row = row - br_ref_offset[i][0];
|
|
const int nb_col = col - br_ref_offset[i][1];
|
|
const int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
|
|
if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height &&
|
|
nb_col < txb_info->stride))
|
|
continue;
|
|
|
|
const int nb_scan_idx = iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < eob) {
|
|
const int cost_diff = try_neighbor_level_down_br(
|
|
nb_coeff_idx, coeff_idx, txb_cache, txb_probs, txb_info);
|
|
if (cost_map)
|
|
cost_map[nb_row - row + COST_MAP_OFFSET]
|
|
[nb_col - col + COST_MAP_OFFSET] += cost_diff;
|
|
accu_cost_diff += cost_diff;
|
|
}
|
|
}
|
|
}
|
|
|
|
return accu_cost_diff;
|
|
}
|
|
|
|
static int get_low_coeff_cost(int coeff_idx, const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs,
|
|
const TxbInfo *txb_info) {
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
const int abs_qc = abs(qc);
|
|
assert(abs_qc <= 1);
|
|
int cost = 0;
|
|
const int scan_idx = txb_info->scan_order->iscan[coeff_idx];
|
|
if (scan_idx < txb_info->seg_eob) {
|
|
const aom_prob level_prob =
|
|
get_level_prob(0, coeff_idx, txb_cache, txb_probs);
|
|
cost += av1_cost_bit(level_prob, qc != 0);
|
|
}
|
|
|
|
if (qc != 0) {
|
|
const int base_idx = 0;
|
|
const int ctx = txb_cache->base_ctx_arr[base_idx][coeff_idx][0];
|
|
cost += get_base_cost(abs_qc, ctx, txb_probs->coeff_base, base_idx);
|
|
if (scan_idx < txb_info->seg_eob) {
|
|
const int eob_ctx =
|
|
get_eob_ctx(txb_info->qcoeff, coeff_idx, txb_info->txs_ctx);
|
|
cost += av1_cost_bit(txb_probs->eob_flag[eob_ctx],
|
|
scan_idx == (txb_info->eob - 1));
|
|
}
|
|
cost += get_sign_bit_cost(qc, coeff_idx, txb_probs->dc_sign_prob,
|
|
txb_info->txb_ctx->dc_sign_ctx);
|
|
}
|
|
return cost;
|
|
}
|
|
|
|
static INLINE void set_eob(TxbInfo *txb_info, int eob) {
|
|
txb_info->eob = eob;
|
|
txb_info->seg_eob = AOMMIN(eob, tx_size_2d[txb_info->tx_size] - 1);
|
|
}
|
|
|
|
// TODO(angiebird): add static to this function once it's called
|
|
int try_change_eob(int *new_eob, int coeff_idx, const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs, TxbInfo *txb_info) {
|
|
assert(txb_info->eob > 0);
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
const int abs_qc = abs(qc);
|
|
if (abs_qc != 1) {
|
|
*new_eob = -1;
|
|
return 0;
|
|
}
|
|
const int16_t *iscan = txb_info->scan_order->iscan;
|
|
const int16_t *scan = txb_info->scan_order->scan;
|
|
const int scan_idx = iscan[coeff_idx];
|
|
*new_eob = 0;
|
|
int cost_diff = 0;
|
|
cost_diff -= get_low_coeff_cost(coeff_idx, txb_cache, txb_probs, txb_info);
|
|
// int coeff_cost =
|
|
// get_coeff_cost(qc, scan_idx, txb_info, txb_probs);
|
|
// if (-cost_diff != coeff_cost) {
|
|
// printf("-cost_diff %d coeff_cost %d\n", -cost_diff, coeff_cost);
|
|
// get_low_coeff_cost(coeff_idx, txb_cache, txb_probs, txb_info);
|
|
// get_coeff_cost(qc, scan_idx, txb_info, txb_probs);
|
|
// }
|
|
for (int si = scan_idx - 1; si >= 0; --si) {
|
|
const int ci = scan[si];
|
|
if (txb_info->qcoeff[ci] != 0) {
|
|
*new_eob = si + 1;
|
|
break;
|
|
} else {
|
|
cost_diff -= get_low_coeff_cost(ci, txb_cache, txb_probs, txb_info);
|
|
}
|
|
}
|
|
|
|
const int org_eob = txb_info->eob;
|
|
set_eob(txb_info, *new_eob);
|
|
cost_diff += try_level_down(coeff_idx, txb_cache, txb_probs, txb_info, NULL);
|
|
set_eob(txb_info, org_eob);
|
|
|
|
if (*new_eob > 0) {
|
|
// Note that get_eob_ctx does NOT actually account for qcoeff, so we don't
|
|
// need to lower down the qcoeff here
|
|
const int eob_ctx =
|
|
get_eob_ctx(txb_info->qcoeff, scan[*new_eob - 1], txb_info->txs_ctx);
|
|
cost_diff -= av1_cost_bit(txb_probs->eob_flag[eob_ctx], 0);
|
|
cost_diff += av1_cost_bit(txb_probs->eob_flag[eob_ctx], 1);
|
|
} else {
|
|
const int txb_skip_ctx = txb_info->txb_ctx->txb_skip_ctx;
|
|
cost_diff -= av1_cost_bit(txb_probs->txb_skip[txb_skip_ctx], 0);
|
|
cost_diff += av1_cost_bit(txb_probs->txb_skip[txb_skip_ctx], 1);
|
|
}
|
|
return cost_diff;
|
|
}
|
|
|
|
static INLINE tran_low_t qcoeff_to_dqcoeff(tran_low_t qc, int dqv, int shift) {
|
|
int sgn = qc < 0 ? -1 : 1;
|
|
return sgn * ((abs(qc) * dqv) >> shift);
|
|
}
|
|
|
|
// TODO(angiebird): add static to this function it's called
|
|
void update_level_down(int coeff_idx, TxbCache *txb_cache, TxbInfo *txb_info) {
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
const int abs_qc = abs(qc);
|
|
if (qc == 0) return;
|
|
const tran_low_t low_coeff = get_lower_coeff(qc);
|
|
txb_info->qcoeff[coeff_idx] = low_coeff;
|
|
const int dqv = txb_info->dequant[coeff_idx != 0];
|
|
txb_info->dqcoeff[coeff_idx] =
|
|
qcoeff_to_dqcoeff(low_coeff, dqv, txb_info->shift);
|
|
|
|
const int row = coeff_idx >> txb_info->bwl;
|
|
const int col = coeff_idx - (row << txb_info->bwl);
|
|
const int eob = txb_info->eob;
|
|
const int16_t *iscan = txb_info->scan_order->iscan;
|
|
for (int i = 0; i < SIG_REF_OFFSET_NUM; ++i) {
|
|
const int nb_row = row - sig_ref_offset[i][0];
|
|
const int nb_col = col - sig_ref_offset[i][1];
|
|
|
|
if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height &&
|
|
nb_col < txb_info->stride))
|
|
continue;
|
|
|
|
const int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
const int nb_scan_idx = iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < eob) {
|
|
const int scan_idx = iscan[coeff_idx];
|
|
if (scan_idx < nb_scan_idx) {
|
|
const int level = 1;
|
|
if (abs_qc == level) {
|
|
txb_cache->nz_count_arr[nb_coeff_idx] -= 1;
|
|
assert(txb_cache->nz_count_arr[nb_coeff_idx] >= 0);
|
|
}
|
|
const int count = txb_cache->nz_count_arr[nb_coeff_idx];
|
|
txb_cache->nz_ctx_arr[nb_coeff_idx][0] = get_nz_map_ctx_from_count(
|
|
count, txb_info->qcoeff, nb_coeff_idx, txb_info->bwl, iscan);
|
|
// int ref_ctx = get_nz_map_ctx(txb_info->qcoeff, nb_coeff_idx,
|
|
// txb_info->bwl, iscan);
|
|
// if (ref_ctx != txb_cache->nz_ctx_arr[nb_coeff_idx][0])
|
|
// printf("nz ctx %d ref_ctx %d\n",
|
|
// txb_cache->nz_ctx_arr[nb_coeff_idx][0], ref_ctx);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int i = 0; i < BASE_CONTEXT_POSITION_NUM; ++i) {
|
|
const int nb_row = row - base_ref_offset[i][0];
|
|
const int nb_col = col - base_ref_offset[i][1];
|
|
const int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
|
|
if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height &&
|
|
nb_col < txb_info->stride))
|
|
continue;
|
|
|
|
const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx];
|
|
if (!has_base(nb_coeff, 0)) continue;
|
|
const int nb_scan_idx = iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < eob) {
|
|
if (row >= nb_row && col >= nb_col)
|
|
update_mag_arr(txb_cache->base_mag_arr[nb_coeff_idx], abs_qc);
|
|
const int mag =
|
|
get_mag_from_mag_arr(txb_cache->base_mag_arr[nb_coeff_idx]);
|
|
for (int base_idx = 0; base_idx < NUM_BASE_LEVELS; ++base_idx) {
|
|
if (!has_base(nb_coeff, base_idx)) continue;
|
|
const int level = base_idx + 1;
|
|
if (abs_qc == level) {
|
|
txb_cache->base_count_arr[base_idx][nb_coeff_idx] -= 1;
|
|
assert(txb_cache->base_count_arr[base_idx][nb_coeff_idx] >= 0);
|
|
}
|
|
const int count = txb_cache->base_count_arr[base_idx][nb_coeff_idx];
|
|
txb_cache->base_ctx_arr[base_idx][nb_coeff_idx][0] =
|
|
get_base_ctx_from_count_mag(nb_row, nb_col, count, mag, level);
|
|
// int ref_ctx = get_base_ctx(txb_info->qcoeff, nb_coeff_idx,
|
|
// txb_info->bwl, level);
|
|
// if (ref_ctx != txb_cache->base_ctx_arr[base_idx][nb_coeff_idx][0]) {
|
|
// printf("base ctx %d ref_ctx %d\n",
|
|
// txb_cache->base_ctx_arr[base_idx][nb_coeff_idx][0], ref_ctx);
|
|
// }
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int i = 0; i < BR_CONTEXT_POSITION_NUM; ++i) {
|
|
const int nb_row = row - br_ref_offset[i][0];
|
|
const int nb_col = col - br_ref_offset[i][1];
|
|
const int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
|
|
if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height &&
|
|
nb_col < txb_info->stride))
|
|
continue;
|
|
|
|
const int nb_scan_idx = iscan[nb_coeff_idx];
|
|
const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx];
|
|
if (!has_br(nb_coeff)) continue;
|
|
if (nb_scan_idx < eob) {
|
|
const int level = 1 + NUM_BASE_LEVELS;
|
|
if (abs_qc == level) {
|
|
txb_cache->br_count_arr[nb_coeff_idx] -= 1;
|
|
assert(txb_cache->br_count_arr[nb_coeff_idx] >= 0);
|
|
}
|
|
if (row >= nb_row && col >= nb_col)
|
|
update_mag_arr(txb_cache->br_mag_arr[nb_coeff_idx], abs_qc);
|
|
const int count = txb_cache->br_count_arr[nb_coeff_idx];
|
|
const int mag = get_mag_from_mag_arr(txb_cache->br_mag_arr[nb_coeff_idx]);
|
|
txb_cache->br_ctx_arr[nb_coeff_idx][0] =
|
|
get_br_ctx_from_count_mag(nb_row, nb_col, count, mag);
|
|
// int ref_ctx = get_level_ctx(txb_info->qcoeff, nb_coeff_idx,
|
|
// txb_info->bwl);
|
|
// if (ref_ctx != txb_cache->br_ctx_arr[nb_coeff_idx][0]) {
|
|
// printf("base ctx %d ref_ctx %d\n",
|
|
// txb_cache->br_ctx_arr[nb_coeff_idx][0], ref_ctx);
|
|
// }
|
|
}
|
|
}
|
|
}
|
|
|
|
static int get_coeff_cost(tran_low_t qc, int scan_idx, TxbInfo *txb_info,
|
|
const TxbProbs *txb_probs) {
|
|
const TXB_CTX *txb_ctx = txb_info->txb_ctx;
|
|
const int is_nz = (qc != 0);
|
|
const tran_low_t abs_qc = abs(qc);
|
|
int cost = 0;
|
|
const int16_t *scan = txb_info->scan_order->scan;
|
|
const int16_t *iscan = txb_info->scan_order->iscan;
|
|
|
|
if (scan_idx < txb_info->seg_eob) {
|
|
int coeff_ctx = get_nz_map_ctx(txb_info->qcoeff, scan[scan_idx],
|
|
txb_info->bwl, txb_info->height, iscan);
|
|
cost += av1_cost_bit(txb_probs->nz_map[coeff_ctx], is_nz);
|
|
}
|
|
|
|
if (is_nz) {
|
|
cost += get_sign_bit_cost(qc, scan_idx, txb_probs->dc_sign_prob,
|
|
txb_ctx->dc_sign_ctx);
|
|
|
|
int ctx_ls[NUM_BASE_LEVELS] = { 0 };
|
|
get_base_ctx_set(txb_info->qcoeff, scan[scan_idx], txb_info->bwl,
|
|
txb_info->height, ctx_ls);
|
|
|
|
int i;
|
|
for (i = 0; i < NUM_BASE_LEVELS; ++i) {
|
|
cost += get_base_cost(abs_qc, ctx_ls[i], txb_probs->coeff_base, i);
|
|
}
|
|
|
|
if (abs_qc > NUM_BASE_LEVELS) {
|
|
int ctx = get_br_ctx(txb_info->qcoeff, scan[scan_idx], txb_info->bwl,
|
|
txb_info->height);
|
|
cost += get_br_cost(abs_qc, ctx, txb_probs->coeff_lps);
|
|
cost += get_golomb_cost(abs_qc);
|
|
}
|
|
|
|
if (scan_idx < txb_info->seg_eob) {
|
|
int eob_ctx =
|
|
get_eob_ctx(txb_info->qcoeff, scan[scan_idx], txb_info->txs_ctx);
|
|
cost += av1_cost_bit(txb_probs->eob_flag[eob_ctx],
|
|
scan_idx == (txb_info->eob - 1));
|
|
}
|
|
}
|
|
return cost;
|
|
}
|
|
|
|
#if TEST_OPTIMIZE_TXB
|
|
#define ALL_REF_OFFSET_NUM 17
|
|
static int all_ref_offset[ALL_REF_OFFSET_NUM][2] = {
|
|
{ 0, 0 }, { -2, -1 }, { -2, 0 }, { -2, 1 }, { -1, -2 }, { -1, -1 },
|
|
{ -1, 0 }, { -1, 1 }, { 0, -2 }, { 0, -1 }, { 1, -2 }, { 1, -1 },
|
|
{ 1, 0 }, { 2, 0 }, { 0, 1 }, { 0, 2 }, { 1, 1 },
|
|
};
|
|
|
|
static int try_level_down_ref(int coeff_idx, const TxbProbs *txb_probs,
|
|
TxbInfo *txb_info,
|
|
int (*cost_map)[COST_MAP_SIZE]) {
|
|
if (cost_map) {
|
|
for (int i = 0; i < COST_MAP_SIZE; ++i) av1_zero(cost_map[i]);
|
|
}
|
|
tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
if (qc == 0) return 0;
|
|
int row = coeff_idx >> txb_info->bwl;
|
|
int col = coeff_idx - (row << txb_info->bwl);
|
|
int org_cost = 0;
|
|
for (int i = 0; i < ALL_REF_OFFSET_NUM; ++i) {
|
|
int nb_row = row - all_ref_offset[i][0];
|
|
int nb_col = col - all_ref_offset[i][1];
|
|
int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
int nb_scan_idx = txb_info->scan_order->iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < txb_info->eob && nb_row >= 0 && nb_col >= 0 &&
|
|
nb_row < txb_info->stride && nb_col < txb_info->stride) {
|
|
tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx];
|
|
int cost = get_coeff_cost(nb_coeff, nb_scan_idx, txb_info, txb_probs);
|
|
if (cost_map)
|
|
cost_map[nb_row - row + COST_MAP_OFFSET]
|
|
[nb_col - col + COST_MAP_OFFSET] -= cost;
|
|
org_cost += cost;
|
|
}
|
|
}
|
|
txb_info->qcoeff[coeff_idx] = get_lower_coeff(qc);
|
|
int new_cost = 0;
|
|
for (int i = 0; i < ALL_REF_OFFSET_NUM; ++i) {
|
|
int nb_row = row - all_ref_offset[i][0];
|
|
int nb_col = col - all_ref_offset[i][1];
|
|
int nb_coeff_idx = nb_row * txb_info->stride + nb_col;
|
|
int nb_scan_idx = txb_info->scan_order->iscan[nb_coeff_idx];
|
|
if (nb_scan_idx < txb_info->eob && nb_row >= 0 && nb_col >= 0 &&
|
|
nb_row < txb_info->stride && nb_col < txb_info->stride) {
|
|
tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx];
|
|
int cost = get_coeff_cost(nb_coeff, nb_scan_idx, txb_info, txb_probs);
|
|
if (cost_map)
|
|
cost_map[nb_row - row + COST_MAP_OFFSET]
|
|
[nb_col - col + COST_MAP_OFFSET] += cost;
|
|
new_cost += cost;
|
|
}
|
|
}
|
|
txb_info->qcoeff[coeff_idx] = qc;
|
|
return new_cost - org_cost;
|
|
}
|
|
|
|
static void test_level_down(int coeff_idx, const TxbCache *txb_cache,
|
|
const TxbProbs *txb_probs, TxbInfo *txb_info) {
|
|
int cost_map[COST_MAP_SIZE][COST_MAP_SIZE];
|
|
int ref_cost_map[COST_MAP_SIZE][COST_MAP_SIZE];
|
|
const int cost_diff =
|
|
try_level_down(coeff_idx, txb_cache, txb_probs, txb_info, cost_map);
|
|
const int cost_diff_ref =
|
|
try_level_down_ref(coeff_idx, txb_probs, txb_info, ref_cost_map);
|
|
if (cost_diff != cost_diff_ref) {
|
|
printf("qc %d cost_diff %d cost_diff_ref %d\n", txb_info->qcoeff[coeff_idx],
|
|
cost_diff, cost_diff_ref);
|
|
for (int r = 0; r < COST_MAP_SIZE; ++r) {
|
|
for (int c = 0; c < COST_MAP_SIZE; ++c) {
|
|
printf("%d:%d ", cost_map[r][c], ref_cost_map[r][c]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// TODO(angiebird): make this static once it's called
|
|
int get_txb_cost(TxbInfo *txb_info, const TxbProbs *txb_probs) {
|
|
int cost = 0;
|
|
int txb_skip_ctx = txb_info->txb_ctx->txb_skip_ctx;
|
|
const int16_t *scan = txb_info->scan_order->scan;
|
|
if (txb_info->eob == 0) {
|
|
cost = av1_cost_bit(txb_probs->txb_skip[txb_skip_ctx], 1);
|
|
return cost;
|
|
}
|
|
cost = av1_cost_bit(txb_probs->txb_skip[txb_skip_ctx], 0);
|
|
for (int c = 0; c < txb_info->eob; ++c) {
|
|
tran_low_t qc = txb_info->qcoeff[scan[c]];
|
|
int coeff_cost = get_coeff_cost(qc, c, txb_info, txb_probs);
|
|
cost += coeff_cost;
|
|
}
|
|
return cost;
|
|
}
|
|
|
|
#if TEST_OPTIMIZE_TXB
|
|
void test_try_change_eob(TxbInfo *txb_info, TxbProbs *txb_probs,
|
|
TxbCache *txb_cache) {
|
|
int eob = txb_info->eob;
|
|
const int16_t *scan = txb_info->scan_order->scan;
|
|
if (eob > 0) {
|
|
int last_si = eob - 1;
|
|
int last_ci = scan[last_si];
|
|
int last_coeff = txb_info->qcoeff[last_ci];
|
|
if (abs(last_coeff) == 1) {
|
|
int new_eob;
|
|
int cost_diff =
|
|
try_change_eob(&new_eob, last_ci, txb_cache, txb_probs, txb_info);
|
|
int org_eob = txb_info->eob;
|
|
int cost = get_txb_cost(txb_info, txb_probs);
|
|
|
|
txb_info->qcoeff[last_ci] = get_lower_coeff(last_coeff);
|
|
set_eob(txb_info, new_eob);
|
|
int new_cost = get_txb_cost(txb_info, txb_probs);
|
|
set_eob(txb_info, org_eob);
|
|
txb_info->qcoeff[last_ci] = last_coeff;
|
|
|
|
int ref_cost_diff = -cost + new_cost;
|
|
if (cost_diff != ref_cost_diff)
|
|
printf("org_eob %d new_eob %d cost_diff %d ref_cost_diff %d\n", org_eob,
|
|
new_eob, cost_diff, ref_cost_diff);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static INLINE int64_t get_coeff_dist(tran_low_t tcoeff, tran_low_t dqcoeff,
|
|
int shift) {
|
|
const int64_t diff = (tcoeff - dqcoeff) * (1 << shift);
|
|
const int64_t error = diff * diff;
|
|
return error;
|
|
}
|
|
|
|
typedef struct LevelDownStats {
|
|
int update;
|
|
tran_low_t low_qc;
|
|
tran_low_t low_dqc;
|
|
int64_t rd_diff;
|
|
int cost_diff;
|
|
int64_t dist_diff;
|
|
int new_eob;
|
|
} LevelDownStats;
|
|
|
|
void try_level_down_facade(LevelDownStats *stats, int scan_idx,
|
|
const TxbCache *txb_cache, const TxbProbs *txb_probs,
|
|
TxbInfo *txb_info) {
|
|
const int16_t *scan = txb_info->scan_order->scan;
|
|
const int coeff_idx = scan[scan_idx];
|
|
const tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
stats->new_eob = -1;
|
|
stats->update = 0;
|
|
if (qc == 0) {
|
|
return;
|
|
}
|
|
|
|
const tran_low_t tqc = txb_info->tcoeff[coeff_idx];
|
|
const int dqv = txb_info->dequant[coeff_idx != 0];
|
|
|
|
const tran_low_t dqc = qcoeff_to_dqcoeff(qc, dqv, txb_info->shift);
|
|
const int64_t dqc_dist = get_coeff_dist(tqc, dqc, txb_info->shift);
|
|
|
|
stats->low_qc = get_lower_coeff(qc);
|
|
stats->low_dqc = qcoeff_to_dqcoeff(stats->low_qc, dqv, txb_info->shift);
|
|
const int64_t low_dqc_dist =
|
|
get_coeff_dist(tqc, stats->low_dqc, txb_info->shift);
|
|
|
|
stats->dist_diff = -dqc_dist + low_dqc_dist;
|
|
stats->cost_diff = 0;
|
|
stats->new_eob = txb_info->eob;
|
|
if (scan_idx == txb_info->eob - 1 && abs(qc) == 1) {
|
|
stats->cost_diff = try_change_eob(&stats->new_eob, coeff_idx, txb_cache,
|
|
txb_probs, txb_info);
|
|
} else {
|
|
stats->cost_diff =
|
|
try_level_down(coeff_idx, txb_cache, txb_probs, txb_info, NULL);
|
|
#if TEST_OPTIMIZE_TXB
|
|
test_level_down(coeff_idx, txb_cache, txb_probs, txb_info);
|
|
#endif
|
|
}
|
|
stats->rd_diff = RDCOST(txb_info->rdmult, stats->cost_diff, stats->dist_diff);
|
|
if (stats->rd_diff < 0) stats->update = 1;
|
|
return;
|
|
}
|
|
|
|
static int optimize_txb(TxbInfo *txb_info, const TxbProbs *txb_probs,
|
|
TxbCache *txb_cache, int dry_run) {
|
|
int update = 0;
|
|
if (txb_info->eob == 0) return update;
|
|
int cost_diff = 0;
|
|
int64_t dist_diff = 0;
|
|
int64_t rd_diff = 0;
|
|
const int max_eob = tx_size_2d[txb_info->tx_size];
|
|
|
|
#if TEST_OPTIMIZE_TXB
|
|
int64_t sse;
|
|
int64_t org_dist =
|
|
av1_block_error_c(txb_info->tcoeff, txb_info->dqcoeff, max_eob, &sse) *
|
|
(1 << (2 * txb_info->shift));
|
|
int org_cost = get_txb_cost(txb_info, txb_probs);
|
|
#endif
|
|
|
|
tran_low_t *org_qcoeff = txb_info->qcoeff;
|
|
tran_low_t *org_dqcoeff = txb_info->dqcoeff;
|
|
|
|
tran_low_t tmp_qcoeff[MAX_TX_SQUARE];
|
|
tran_low_t tmp_dqcoeff[MAX_TX_SQUARE];
|
|
const int org_eob = txb_info->eob;
|
|
if (dry_run) {
|
|
memcpy(tmp_qcoeff, org_qcoeff, sizeof(org_qcoeff[0]) * max_eob);
|
|
memcpy(tmp_dqcoeff, org_dqcoeff, sizeof(org_dqcoeff[0]) * max_eob);
|
|
txb_info->qcoeff = tmp_qcoeff;
|
|
txb_info->dqcoeff = tmp_dqcoeff;
|
|
}
|
|
|
|
const int16_t *scan = txb_info->scan_order->scan;
|
|
|
|
// forward optimize the nz_map
|
|
const int cur_eob = txb_info->eob;
|
|
for (int si = 0; si < cur_eob; ++si) {
|
|
const int coeff_idx = scan[si];
|
|
tran_low_t qc = txb_info->qcoeff[coeff_idx];
|
|
if (abs(qc) == 1) {
|
|
LevelDownStats stats;
|
|
try_level_down_facade(&stats, si, txb_cache, txb_probs, txb_info);
|
|
if (stats.update) {
|
|
update = 1;
|
|
cost_diff += stats.cost_diff;
|
|
dist_diff += stats.dist_diff;
|
|
rd_diff += stats.rd_diff;
|
|
update_level_down(coeff_idx, txb_cache, txb_info);
|
|
set_eob(txb_info, stats.new_eob);
|
|
}
|
|
}
|
|
}
|
|
|
|
// backward optimize the level-k map
|
|
for (int si = txb_info->eob - 1; si >= 0; --si) {
|
|
LevelDownStats stats;
|
|
try_level_down_facade(&stats, si, txb_cache, txb_probs, txb_info);
|
|
const int coeff_idx = scan[si];
|
|
if (stats.update) {
|
|
#if TEST_OPTIMIZE_TXB
|
|
// printf("si %d low_qc %d cost_diff %d dist_diff %ld rd_diff %ld eob %d new_eob
|
|
// %d\n", si, stats.low_qc, stats.cost_diff, stats.dist_diff, stats.rd_diff,
|
|
// txb_info->eob, stats.new_eob);
|
|
#endif
|
|
update = 1;
|
|
cost_diff += stats.cost_diff;
|
|
dist_diff += stats.dist_diff;
|
|
rd_diff += stats.rd_diff;
|
|
update_level_down(coeff_idx, txb_cache, txb_info);
|
|
set_eob(txb_info, stats.new_eob);
|
|
}
|
|
if (si > txb_info->eob) si = txb_info->eob;
|
|
}
|
|
#if TEST_OPTIMIZE_TXB
|
|
int64_t new_dist =
|
|
av1_block_error_c(txb_info->tcoeff, txb_info->dqcoeff, max_eob, &sse) *
|
|
(1 << (2 * txb_info->shift));
|
|
int new_cost = get_txb_cost(txb_info, txb_probs);
|
|
int64_t ref_dist_diff = new_dist - org_dist;
|
|
int ref_cost_diff = new_cost - org_cost;
|
|
if (cost_diff != ref_cost_diff || dist_diff != ref_dist_diff)
|
|
printf(
|
|
"overall rd_diff %ld\ncost_diff %d ref_cost_diff%d\ndist_diff %ld "
|
|
"ref_dist_diff %ld\neob %d new_eob %d\n\n",
|
|
rd_diff, cost_diff, ref_cost_diff, dist_diff, ref_dist_diff, org_eob,
|
|
txb_info->eob);
|
|
#endif
|
|
if (dry_run) {
|
|
txb_info->qcoeff = org_qcoeff;
|
|
txb_info->dqcoeff = org_dqcoeff;
|
|
set_eob(txb_info, org_eob);
|
|
}
|
|
return update;
|
|
}
|
|
|
|
// These numbers are empirically obtained.
|
|
static const int plane_rd_mult[REF_TYPES][PLANE_TYPES] = {
|
|
{ 17, 13 }, { 16, 10 },
|
|
};
|
|
|
|
int av1_optimize_txb(const AV1_COMMON *cm, MACROBLOCK *x, int plane,
|
|
int blk_row, int blk_col, int block, TX_SIZE tx_size,
|
|
TXB_CTX *txb_ctx) {
|
|
MACROBLOCKD *const xd = &x->e_mbd;
|
|
const PLANE_TYPE plane_type = get_plane_type(plane);
|
|
const TX_SIZE txs_ctx = get_txsize_context(tx_size);
|
|
const TX_TYPE tx_type =
|
|
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
|
|
const MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
|
|
const struct macroblock_plane *p = &x->plane[plane];
|
|
struct macroblockd_plane *pd = &xd->plane[plane];
|
|
const int eob = p->eobs[block];
|
|
tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block);
|
|
tran_low_t *dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
|
|
const tran_low_t *tcoeff = BLOCK_OFFSET(p->coeff, block);
|
|
const int16_t *dequant = pd->dequant;
|
|
const int seg_eob = AOMMIN(eob, tx_size_2d[tx_size] - 1);
|
|
const aom_prob *nz_map = xd->fc->nz_map[txs_ctx][plane_type];
|
|
|
|
const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
|
|
const int stride = 1 << bwl;
|
|
const int height = tx_size_high[tx_size];
|
|
aom_prob(*coeff_base)[COEFF_BASE_CONTEXTS] =
|
|
xd->fc->coeff_base[txs_ctx][plane_type];
|
|
|
|
const aom_prob *coeff_lps = xd->fc->coeff_lps[txs_ctx][plane_type];
|
|
|
|
const int is_inter = is_inter_block(mbmi);
|
|
const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
|
|
|
|
const TxbProbs txb_probs = { xd->fc->dc_sign[plane_type],
|
|
nz_map,
|
|
coeff_base,
|
|
coeff_lps,
|
|
xd->fc->eob_flag[txs_ctx][plane_type],
|
|
xd->fc->txb_skip[txs_ctx] };
|
|
|
|
const int shift = av1_get_tx_scale(tx_size);
|
|
const int64_t rdmult =
|
|
(x->rdmult * plane_rd_mult[is_inter][plane_type] + 2) >> 2;
|
|
|
|
TxbInfo txb_info = { qcoeff, dqcoeff, tcoeff, dequant, shift,
|
|
tx_size, txs_ctx, bwl, stride, height,
|
|
eob, seg_eob, scan_order, txb_ctx, rdmult };
|
|
|
|
TxbCache txb_cache;
|
|
gen_txb_cache(&txb_cache, &txb_info);
|
|
|
|
const int update = optimize_txb(&txb_info, &txb_probs, &txb_cache, 0);
|
|
if (update) p->eobs[block] = txb_info.eob;
|
|
return txb_info.eob;
|
|
}
|
|
int av1_get_txb_entropy_context(const tran_low_t *qcoeff,
|
|
const SCAN_ORDER *scan_order, int eob) {
|
|
const int16_t *scan = scan_order->scan;
|
|
int cul_level = 0;
|
|
int c;
|
|
for (c = 0; c < eob; ++c) {
|
|
cul_level += abs(qcoeff[scan[c]]);
|
|
}
|
|
|
|
cul_level = AOMMIN(COEFF_CONTEXT_MASK, cul_level);
|
|
set_dc_sign(&cul_level, qcoeff[0]);
|
|
|
|
return cul_level;
|
|
}
|
|
|
|
void av1_update_txb_context_b(int plane, int block, int blk_row, int blk_col,
|
|
BLOCK_SIZE plane_bsize, TX_SIZE tx_size,
|
|
void *arg) {
|
|
struct tokenize_b_args *const args = arg;
|
|
const AV1_COMP *cpi = args->cpi;
|
|
const AV1_COMMON *cm = &cpi->common;
|
|
ThreadData *const td = args->td;
|
|
MACROBLOCK *const x = &td->mb;
|
|
MACROBLOCKD *const xd = &x->e_mbd;
|
|
MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
|
|
struct macroblock_plane *p = &x->plane[plane];
|
|
struct macroblockd_plane *pd = &xd->plane[plane];
|
|
const uint16_t eob = p->eobs[block];
|
|
const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block);
|
|
const PLANE_TYPE plane_type = pd->plane_type;
|
|
const TX_TYPE tx_type =
|
|
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
|
|
const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
|
|
(void)plane_bsize;
|
|
|
|
int cul_level = av1_get_txb_entropy_context(qcoeff, scan_order, eob);
|
|
av1_set_contexts(xd, pd, plane, tx_size, cul_level, blk_col, blk_row);
|
|
}
|
|
|
|
void av1_update_and_record_txb_context(int plane, int block, int blk_row,
|
|
int blk_col, BLOCK_SIZE plane_bsize,
|
|
TX_SIZE tx_size, void *arg) {
|
|
struct tokenize_b_args *const args = arg;
|
|
const AV1_COMP *cpi = args->cpi;
|
|
const AV1_COMMON *cm = &cpi->common;
|
|
ThreadData *const td = args->td;
|
|
MACROBLOCK *const x = &td->mb;
|
|
MACROBLOCKD *const xd = &x->e_mbd;
|
|
struct macroblock_plane *p = &x->plane[plane];
|
|
struct macroblockd_plane *pd = &xd->plane[plane];
|
|
MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
|
|
int eob = p->eobs[block], update_eob = 0;
|
|
const PLANE_TYPE plane_type = pd->plane_type;
|
|
const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block);
|
|
tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block);
|
|
const int segment_id = mbmi->segment_id;
|
|
const TX_TYPE tx_type =
|
|
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
|
|
const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
|
|
const int16_t *scan = scan_order->scan;
|
|
const int16_t *iscan = scan_order->iscan;
|
|
const int seg_eob = get_tx_eob(&cpi->common.seg, segment_id, tx_size);
|
|
int c, i;
|
|
TXB_CTX txb_ctx;
|
|
get_txb_ctx(plane_bsize, tx_size, plane, pd->above_context + blk_col,
|
|
pd->left_context + blk_row, &txb_ctx);
|
|
const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
|
|
const int height = tx_size_high[tx_size];
|
|
int cul_level = 0;
|
|
unsigned int(*nz_map_count)[SIG_COEF_CONTEXTS][2];
|
|
|
|
TX_SIZE txsize_ctx = get_txsize_context(tx_size);
|
|
|
|
nz_map_count = &td->counts->nz_map[txsize_ctx][plane_type];
|
|
|
|
memcpy(tcoeff, qcoeff, sizeof(*tcoeff) * seg_eob);
|
|
|
|
++td->counts->txb_skip[txsize_ctx][txb_ctx.txb_skip_ctx][eob == 0];
|
|
x->mbmi_ext->txb_skip_ctx[plane][block] = txb_ctx.txb_skip_ctx;
|
|
|
|
x->mbmi_ext->eobs[plane][block] = eob;
|
|
|
|
if (eob == 0) {
|
|
av1_set_contexts(xd, pd, plane, tx_size, 0, blk_col, blk_row);
|
|
return;
|
|
}
|
|
|
|
#if CONFIG_TXK_SEL
|
|
av1_update_tx_type_count(cm, xd, blk_row, blk_col, block, plane,
|
|
mbmi->sb_type, get_min_tx_size(tx_size), td->counts);
|
|
#endif
|
|
|
|
for (c = 0; c < eob; ++c) {
|
|
tran_low_t v = qcoeff[scan[c]];
|
|
int is_nz = (v != 0);
|
|
int coeff_ctx = get_nz_map_ctx(tcoeff, scan[c], bwl, height, iscan);
|
|
int eob_ctx = get_eob_ctx(tcoeff, scan[c], txsize_ctx);
|
|
|
|
if (c == seg_eob - 1) break;
|
|
|
|
++(*nz_map_count)[coeff_ctx][is_nz];
|
|
|
|
if (is_nz) {
|
|
++td->counts->eob_flag[txsize_ctx][plane_type][eob_ctx][c == (eob - 1)];
|
|
}
|
|
}
|
|
|
|
// Reverse process order to handle coefficient level and sign.
|
|
for (i = 0; i < NUM_BASE_LEVELS; ++i) {
|
|
update_eob = 0;
|
|
for (c = eob - 1; c >= 0; --c) {
|
|
tran_low_t v = qcoeff[scan[c]];
|
|
tran_low_t level = abs(v);
|
|
int ctx;
|
|
|
|
if (level <= i) continue;
|
|
|
|
ctx = get_base_ctx(tcoeff, scan[c], bwl, height, i + 1);
|
|
|
|
if (level == i + 1) {
|
|
++td->counts->coeff_base[txsize_ctx][plane_type][i][ctx][1];
|
|
if (c == 0) {
|
|
int dc_sign_ctx = txb_ctx.dc_sign_ctx;
|
|
|
|
++td->counts->dc_sign[plane_type][dc_sign_ctx][v < 0];
|
|
x->mbmi_ext->dc_sign_ctx[plane][block] = dc_sign_ctx;
|
|
}
|
|
cul_level += level;
|
|
continue;
|
|
}
|
|
++td->counts->coeff_base[txsize_ctx][plane_type][i][ctx][0];
|
|
update_eob = AOMMAX(update_eob, c);
|
|
}
|
|
}
|
|
|
|
for (c = update_eob; c >= 0; --c) {
|
|
tran_low_t v = qcoeff[scan[c]];
|
|
tran_low_t level = abs(v);
|
|
int idx;
|
|
int ctx;
|
|
|
|
if (level <= NUM_BASE_LEVELS) continue;
|
|
|
|
cul_level += level;
|
|
if (c == 0) {
|
|
int dc_sign_ctx = txb_ctx.dc_sign_ctx;
|
|
|
|
++td->counts->dc_sign[plane_type][dc_sign_ctx][v < 0];
|
|
x->mbmi_ext->dc_sign_ctx[plane][block] = dc_sign_ctx;
|
|
}
|
|
|
|
// level is above 1.
|
|
ctx = get_br_ctx(tcoeff, scan[c], bwl, height);
|
|
for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) {
|
|
if (level == (idx + 1 + NUM_BASE_LEVELS)) {
|
|
++td->counts->coeff_lps[txsize_ctx][plane_type][ctx][1];
|
|
break;
|
|
}
|
|
++td->counts->coeff_lps[txsize_ctx][plane_type][ctx][0];
|
|
}
|
|
if (idx < COEFF_BASE_RANGE) continue;
|
|
|
|
// use 0-th order Golomb code to handle the residual level.
|
|
}
|
|
|
|
cul_level = AOMMIN(COEFF_CONTEXT_MASK, cul_level);
|
|
|
|
// DC value
|
|
set_dc_sign(&cul_level, tcoeff[0]);
|
|
av1_set_contexts(xd, pd, plane, tx_size, cul_level, blk_col, blk_row);
|
|
|
|
#if CONFIG_ADAPT_SCAN
|
|
// Since dqcoeff is not available here, we pass qcoeff into
|
|
// av1_update_scan_count_facade(). The update behavior should be the same
|
|
// because av1_update_scan_count_facade() only cares if coefficients are zero
|
|
// or not.
|
|
av1_update_scan_count_facade((AV1_COMMON *)cm, td->counts, tx_size, tx_type,
|
|
qcoeff, eob);
|
|
#endif
|
|
}
|
|
|
|
void av1_update_txb_context(const AV1_COMP *cpi, ThreadData *td,
|
|
RUN_TYPE dry_run, BLOCK_SIZE bsize, int *rate,
|
|
int mi_row, int mi_col) {
|
|
const AV1_COMMON *const cm = &cpi->common;
|
|
MACROBLOCK *const x = &td->mb;
|
|
MACROBLOCKD *const xd = &x->e_mbd;
|
|
MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
|
|
const int ctx = av1_get_skip_context(xd);
|
|
const int skip_inc =
|
|
!segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP);
|
|
struct tokenize_b_args arg = { cpi, td, NULL, 0 };
|
|
(void)rate;
|
|
(void)mi_row;
|
|
(void)mi_col;
|
|
if (mbmi->skip) {
|
|
if (!dry_run) td->counts->skip[ctx][1] += skip_inc;
|
|
av1_reset_skip_context(xd, mi_row, mi_col, bsize);
|
|
return;
|
|
}
|
|
|
|
if (!dry_run) {
|
|
td->counts->skip[ctx][0] += skip_inc;
|
|
av1_foreach_transformed_block(xd, bsize, mi_row, mi_col,
|
|
av1_update_and_record_txb_context, &arg);
|
|
} else if (dry_run == DRY_RUN_NORMAL) {
|
|
av1_foreach_transformed_block(xd, bsize, mi_row, mi_col,
|
|
av1_update_txb_context_b, &arg);
|
|
} else {
|
|
printf("DRY_RUN_COSTCOEFFS is not supported yet\n");
|
|
assert(0);
|
|
}
|
|
}
|
|
|
|
static void find_new_prob(unsigned int *branch_cnt, aom_prob *oldp,
|
|
int *savings, int *update, aom_writer *const bc) {
|
|
const aom_prob upd = DIFF_UPDATE_PROB;
|
|
int u = 0;
|
|
aom_prob newp = get_binary_prob(branch_cnt[0], branch_cnt[1]);
|
|
int s = av1_prob_diff_update_savings_search(branch_cnt, *oldp, &newp, upd, 1);
|
|
|
|
if (s > 0 && newp != *oldp) u = 1;
|
|
|
|
if (u)
|
|
*savings += s - (int)(av1_cost_zero(upd)); // TODO(jingning): 1?
|
|
else
|
|
*savings -= (int)(av1_cost_zero(upd));
|
|
|
|
if (update) {
|
|
++update[u];
|
|
return;
|
|
}
|
|
|
|
aom_write(bc, u, upd);
|
|
if (u) {
|
|
/* send/use new probability */
|
|
av1_write_prob_diff_update(bc, newp, *oldp);
|
|
*oldp = newp;
|
|
}
|
|
}
|
|
|
|
static void write_txb_probs(aom_writer *const bc, AV1_COMP *cpi,
|
|
TX_SIZE tx_size) {
|
|
FRAME_CONTEXT *fc = cpi->common.fc;
|
|
FRAME_COUNTS *counts = cpi->td.counts;
|
|
int savings = 0;
|
|
int update[2] = { 0, 0 };
|
|
int plane, ctx, level;
|
|
|
|
for (ctx = 0; ctx < TXB_SKIP_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->txb_skip[tx_size][ctx], &fc->txb_skip[tx_size][ctx],
|
|
&savings, update, bc);
|
|
}
|
|
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < SIG_COEF_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->nz_map[tx_size][plane][ctx],
|
|
&fc->nz_map[tx_size][plane][ctx], &savings, update, bc);
|
|
}
|
|
}
|
|
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < EOB_COEF_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->eob_flag[tx_size][plane][ctx],
|
|
&fc->eob_flag[tx_size][plane][ctx], &savings, update, bc);
|
|
}
|
|
}
|
|
|
|
for (level = 0; level < NUM_BASE_LEVELS; ++level) {
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < COEFF_BASE_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->coeff_base[tx_size][plane][level][ctx],
|
|
&fc->coeff_base[tx_size][plane][level][ctx], &savings,
|
|
update, bc);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < LEVEL_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->coeff_lps[tx_size][plane][ctx],
|
|
&fc->coeff_lps[tx_size][plane][ctx], &savings, update, bc);
|
|
}
|
|
}
|
|
|
|
// Decide if to update the model for this tx_size
|
|
if (update[1] == 0 || savings < 0) {
|
|
aom_write_bit(bc, 0);
|
|
return;
|
|
}
|
|
aom_write_bit(bc, 1);
|
|
|
|
for (ctx = 0; ctx < TXB_SKIP_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->txb_skip[tx_size][ctx], &fc->txb_skip[tx_size][ctx],
|
|
&savings, NULL, bc);
|
|
}
|
|
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < SIG_COEF_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->nz_map[tx_size][plane][ctx],
|
|
&fc->nz_map[tx_size][plane][ctx], &savings, NULL, bc);
|
|
}
|
|
}
|
|
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < EOB_COEF_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->eob_flag[tx_size][plane][ctx],
|
|
&fc->eob_flag[tx_size][plane][ctx], &savings, NULL, bc);
|
|
}
|
|
}
|
|
|
|
for (level = 0; level < NUM_BASE_LEVELS; ++level) {
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < COEFF_BASE_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->coeff_base[tx_size][plane][level][ctx],
|
|
&fc->coeff_base[tx_size][plane][level][ctx], &savings,
|
|
NULL, bc);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane) {
|
|
for (ctx = 0; ctx < LEVEL_CONTEXTS; ++ctx) {
|
|
find_new_prob(counts->coeff_lps[tx_size][plane][ctx],
|
|
&fc->coeff_lps[tx_size][plane][ctx], &savings, NULL, bc);
|
|
}
|
|
}
|
|
}
|
|
|
|
void av1_write_txb_probs(AV1_COMP *cpi, aom_writer *w) {
|
|
const TX_MODE tx_mode = cpi->common.tx_mode;
|
|
const TX_SIZE max_tx_size = tx_mode_to_biggest_tx_size[tx_mode];
|
|
TX_SIZE tx_size;
|
|
int ctx, plane;
|
|
|
|
for (plane = 0; plane < PLANE_TYPES; ++plane)
|
|
for (ctx = 0; ctx < DC_SIGN_CONTEXTS; ++ctx)
|
|
av1_cond_prob_diff_update(w, &cpi->common.fc->dc_sign[plane][ctx],
|
|
cpi->td.counts->dc_sign[plane][ctx], 1);
|
|
|
|
for (tx_size = TX_4X4; tx_size <= max_tx_size; ++tx_size)
|
|
write_txb_probs(w, cpi, tx_size);
|
|
}
|
|
|
|
#if CONFIG_TXK_SEL
|
|
int64_t av1_search_txk_type(const AV1_COMP *cpi, MACROBLOCK *x, int plane,
|
|
int block, int blk_row, int blk_col,
|
|
BLOCK_SIZE plane_bsize, TX_SIZE tx_size,
|
|
const ENTROPY_CONTEXT *a, const ENTROPY_CONTEXT *l,
|
|
int use_fast_coef_costing, RD_STATS *rd_stats) {
|
|
const AV1_COMMON *cm = &cpi->common;
|
|
MACROBLOCKD *xd = &x->e_mbd;
|
|
MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
|
|
TX_TYPE txk_start = DCT_DCT;
|
|
TX_TYPE txk_end = TX_TYPES - 1;
|
|
TX_TYPE best_tx_type = txk_start;
|
|
int64_t best_rd = INT64_MAX;
|
|
uint8_t best_eob = 0;
|
|
const int coeff_ctx = combine_entropy_contexts(*a, *l);
|
|
RD_STATS best_rd_stats;
|
|
TX_TYPE tx_type;
|
|
|
|
av1_invalid_rd_stats(&best_rd_stats);
|
|
|
|
for (tx_type = txk_start; tx_type <= txk_end; ++tx_type) {
|
|
if (plane == 0) mbmi->txk_type[(blk_row << 4) + blk_col] = tx_type;
|
|
TX_TYPE ref_tx_type = av1_get_tx_type(get_plane_type(plane), xd, blk_row,
|
|
blk_col, block, tx_size);
|
|
if (tx_type != ref_tx_type) {
|
|
// use av1_get_tx_type() to check if the tx_type is valid for the current
|
|
// mode if it's not, we skip it here.
|
|
continue;
|
|
}
|
|
|
|
#if CONFIG_EXT_TX
|
|
int is_inter = is_inter_block(mbmi);
|
|
int ext_tx_set = get_ext_tx_set(get_min_tx_size(tx_size), mbmi->sb_type,
|
|
is_inter, cm->reduced_tx_set_used);
|
|
if (!(is_inter && ext_tx_used_inter[ext_tx_set][tx_type]) &&
|
|
!(!is_inter && ext_tx_used_intra[ext_tx_set][tx_type]))
|
|
continue;
|
|
#endif // CONFIG_EXT_TX
|
|
|
|
RD_STATS this_rd_stats;
|
|
av1_invalid_rd_stats(&this_rd_stats);
|
|
av1_xform_quant(cm, x, plane, block, blk_row, blk_col, plane_bsize, tx_size,
|
|
coeff_ctx, AV1_XFORM_QUANT_FP);
|
|
av1_optimize_b(cm, x, plane, blk_row, blk_col, block, plane_bsize, tx_size,
|
|
a, l);
|
|
av1_dist_block(cpi, x, plane, plane_bsize, block, blk_row, blk_col, tx_size,
|
|
&this_rd_stats.dist, &this_rd_stats.sse,
|
|
OUTPUT_HAS_PREDICTED_PIXELS);
|
|
const SCAN_ORDER *scan_order = get_scan(cm, tx_size, tx_type, mbmi);
|
|
this_rd_stats.rate =
|
|
av1_cost_coeffs(cpi, x, plane, blk_row, blk_col, block, tx_size,
|
|
scan_order, a, l, use_fast_coef_costing);
|
|
int rd = RDCOST(x->rdmult, this_rd_stats.rate, this_rd_stats.dist);
|
|
|
|
if (rd < best_rd) {
|
|
best_rd = rd;
|
|
best_rd_stats = this_rd_stats;
|
|
best_tx_type = tx_type;
|
|
best_eob = x->plane[plane].txb_entropy_ctx[block];
|
|
}
|
|
}
|
|
|
|
av1_merge_rd_stats(rd_stats, &best_rd_stats);
|
|
|
|
// if (x->plane[plane].eobs[block] == 0)
|
|
// if (best_tx_type != DCT_DCT)
|
|
// exit(0);
|
|
|
|
if (best_eob == 0 && is_inter_block(mbmi)) best_tx_type = DCT_DCT;
|
|
|
|
if (plane == 0) mbmi->txk_type[(blk_row << 4) + blk_col] = best_tx_type;
|
|
x->plane[plane].txb_entropy_ctx[block] = best_eob;
|
|
|
|
if (!is_inter_block(mbmi)) {
|
|
// intra mode needs decoded result such that the next transform block
|
|
// can use it for prediction.
|
|
av1_xform_quant(cm, x, plane, block, blk_row, blk_col, plane_bsize, tx_size,
|
|
coeff_ctx, AV1_XFORM_QUANT_FP);
|
|
av1_optimize_b(cm, x, plane, blk_row, blk_col, block, plane_bsize, tx_size,
|
|
a, l);
|
|
|
|
av1_inverse_transform_block_facade(xd, plane, block, blk_row, blk_col,
|
|
x->plane[plane].eobs[block]);
|
|
}
|
|
return best_rd;
|
|
}
|
|
#endif // CONFIG_TXK_SEL
|