diff options
Diffstat (limited to 'third_party/aom/av1/encoder/bitstream.c')
| -rw-r--r-- | third_party/aom/av1/encoder/bitstream.c | 3999 |
1 files changed, 0 insertions, 3999 deletions
diff --git a/third_party/aom/av1/encoder/bitstream.c b/third_party/aom/av1/encoder/bitstream.c deleted file mode 100644 index 2c4acdb02..000000000 --- a/third_party/aom/av1/encoder/bitstream.c +++ /dev/null @@ -1,3999 +0,0 @@ -/* - * Copyright (c) 2016, Alliance for Open Media. All rights reserved - * - * This source code is subject to the terms of the BSD 2 Clause License and - * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License - * was not distributed with this source code in the LICENSE file, you can - * obtain it at www.aomedia.org/license/software. If the Alliance for Open - * Media Patent License 1.0 was not distributed with this source code in the - * PATENTS file, you can obtain it at www.aomedia.org/license/patent. - */ - -#include <assert.h> -#include <limits.h> -#include <stdio.h> - -#include "aom/aom_encoder.h" -#include "aom_dsp/aom_dsp_common.h" -#include "aom_dsp/binary_codes_writer.h" -#include "aom_dsp/bitwriter_buffer.h" -#include "aom_mem/aom_mem.h" -#include "aom_ports/bitops.h" -#include "aom_ports/mem_ops.h" -#include "aom_ports/system_state.h" -#if CONFIG_BITSTREAM_DEBUG -#include "aom_util/debug_util.h" -#endif // CONFIG_BITSTREAM_DEBUG - -#include "av1/common/cdef.h" -#include "av1/common/cfl.h" -#include "av1/common/entropy.h" -#include "av1/common/entropymode.h" -#include "av1/common/entropymv.h" -#include "av1/common/mvref_common.h" -#include "av1/common/pred_common.h" -#include "av1/common/reconinter.h" -#include "av1/common/reconintra.h" -#include "av1/common/seg_common.h" -#include "av1/common/tile_common.h" - -#include "av1/encoder/bitstream.h" -#include "av1/encoder/cost.h" -#include "av1/encoder/encodemv.h" -#include "av1/encoder/encodetxb.h" -#include "av1/encoder/mcomp.h" -#include "av1/encoder/palette.h" -#include "av1/encoder/segmentation.h" -#include "av1/encoder/tokenize.h" - -#define ENC_MISMATCH_DEBUG 0 - -static INLINE void write_uniform(aom_writer *w, int n, int v) { - const int l = get_unsigned_bits(n); - const int m = (1 << l) - n; - if (l == 0) return; - if (v < m) { - aom_write_literal(w, v, l - 1); - } else { - aom_write_literal(w, m + ((v - m) >> 1), l - 1); - aom_write_literal(w, (v - m) & 1, 1); - } -} - -static void loop_restoration_write_sb_coeffs(const AV1_COMMON *const cm, - MACROBLOCKD *xd, - const RestorationUnitInfo *rui, - aom_writer *const w, int plane, - FRAME_COUNTS *counts); - -static void write_intra_y_mode_kf(FRAME_CONTEXT *frame_ctx, - const MB_MODE_INFO *mi, - const MB_MODE_INFO *above_mi, - const MB_MODE_INFO *left_mi, - PREDICTION_MODE mode, aom_writer *w) { - assert(!is_intrabc_block(mi)); - (void)mi; - aom_write_symbol(w, mode, get_y_mode_cdf(frame_ctx, above_mi, left_mi), - INTRA_MODES); -} - -static void write_inter_mode(aom_writer *w, PREDICTION_MODE mode, - FRAME_CONTEXT *ec_ctx, const int16_t mode_ctx) { - const int16_t newmv_ctx = mode_ctx & NEWMV_CTX_MASK; - - aom_write_symbol(w, mode != NEWMV, ec_ctx->newmv_cdf[newmv_ctx], 2); - - if (mode != NEWMV) { - const int16_t zeromv_ctx = - (mode_ctx >> GLOBALMV_OFFSET) & GLOBALMV_CTX_MASK; - aom_write_symbol(w, mode != GLOBALMV, ec_ctx->zeromv_cdf[zeromv_ctx], 2); - - if (mode != GLOBALMV) { - int16_t refmv_ctx = (mode_ctx >> REFMV_OFFSET) & REFMV_CTX_MASK; - aom_write_symbol(w, mode != NEARESTMV, ec_ctx->refmv_cdf[refmv_ctx], 2); - } - } -} - -static void write_drl_idx(FRAME_CONTEXT *ec_ctx, const MB_MODE_INFO *mbmi, - const MB_MODE_INFO_EXT *mbmi_ext, aom_writer *w) { - uint8_t ref_frame_type = av1_ref_frame_type(mbmi->ref_frame); - - assert(mbmi->ref_mv_idx < 3); - - const int new_mv = mbmi->mode == NEWMV || mbmi->mode == NEW_NEWMV; - if (new_mv) { - int idx; - for (idx = 0; idx < 2; ++idx) { - if (mbmi_ext->ref_mv_count[ref_frame_type] > idx + 1) { - uint8_t drl_ctx = - av1_drl_ctx(mbmi_ext->ref_mv_stack[ref_frame_type], idx); - - aom_write_symbol(w, mbmi->ref_mv_idx != idx, ec_ctx->drl_cdf[drl_ctx], - 2); - if (mbmi->ref_mv_idx == idx) return; - } - } - return; - } - - if (have_nearmv_in_inter_mode(mbmi->mode)) { - int idx; - // TODO(jingning): Temporary solution to compensate the NEARESTMV offset. - for (idx = 1; idx < 3; ++idx) { - if (mbmi_ext->ref_mv_count[ref_frame_type] > idx + 1) { - uint8_t drl_ctx = - av1_drl_ctx(mbmi_ext->ref_mv_stack[ref_frame_type], idx); - aom_write_symbol(w, mbmi->ref_mv_idx != (idx - 1), - ec_ctx->drl_cdf[drl_ctx], 2); - if (mbmi->ref_mv_idx == (idx - 1)) return; - } - } - return; - } -} - -static void write_inter_compound_mode(MACROBLOCKD *xd, aom_writer *w, - PREDICTION_MODE mode, - const int16_t mode_ctx) { - assert(is_inter_compound_mode(mode)); - aom_write_symbol(w, INTER_COMPOUND_OFFSET(mode), - xd->tile_ctx->inter_compound_mode_cdf[mode_ctx], - INTER_COMPOUND_MODES); -} - -static void write_tx_size_vartx(MACROBLOCKD *xd, const MB_MODE_INFO *mbmi, - TX_SIZE tx_size, int depth, int blk_row, - int blk_col, aom_writer *w) { - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - const int max_blocks_high = max_block_high(xd, mbmi->sb_type, 0); - const int max_blocks_wide = max_block_wide(xd, mbmi->sb_type, 0); - - if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return; - - if (depth == MAX_VARTX_DEPTH) { - txfm_partition_update(xd->above_txfm_context + blk_col, - xd->left_txfm_context + blk_row, tx_size, tx_size); - return; - } - - const int ctx = txfm_partition_context(xd->above_txfm_context + blk_col, - xd->left_txfm_context + blk_row, - mbmi->sb_type, tx_size); - const int txb_size_index = - av1_get_txb_size_index(mbmi->sb_type, blk_row, blk_col); - const int write_txfm_partition = - tx_size == mbmi->inter_tx_size[txb_size_index]; - if (write_txfm_partition) { - aom_write_symbol(w, 0, ec_ctx->txfm_partition_cdf[ctx], 2); - - txfm_partition_update(xd->above_txfm_context + blk_col, - xd->left_txfm_context + blk_row, tx_size, tx_size); - // TODO(yuec): set correct txfm partition update for qttx - } else { - const TX_SIZE sub_txs = sub_tx_size_map[tx_size]; - const int bsw = tx_size_wide_unit[sub_txs]; - const int bsh = tx_size_high_unit[sub_txs]; - - aom_write_symbol(w, 1, ec_ctx->txfm_partition_cdf[ctx], 2); - - if (sub_txs == TX_4X4) { - txfm_partition_update(xd->above_txfm_context + blk_col, - xd->left_txfm_context + blk_row, sub_txs, tx_size); - return; - } - - assert(bsw > 0 && bsh > 0); - for (int row = 0; row < tx_size_high_unit[tx_size]; row += bsh) - for (int col = 0; col < tx_size_wide_unit[tx_size]; col += bsw) { - int offsetr = blk_row + row; - int offsetc = blk_col + col; - write_tx_size_vartx(xd, mbmi, sub_txs, depth + 1, offsetr, offsetc, w); - } - } -} - -static void write_selected_tx_size(const MACROBLOCKD *xd, aom_writer *w) { - const MB_MODE_INFO *const mbmi = xd->mi[0]; - const BLOCK_SIZE bsize = mbmi->sb_type; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - if (block_signals_txsize(bsize)) { - const TX_SIZE tx_size = mbmi->tx_size; - const int tx_size_ctx = get_tx_size_context(xd); - const int depth = tx_size_to_depth(tx_size, bsize); - const int max_depths = bsize_to_max_depth(bsize); - const int32_t tx_size_cat = bsize_to_tx_size_cat(bsize); - - assert(depth >= 0 && depth <= max_depths); - assert(!is_inter_block(mbmi)); - assert(IMPLIES(is_rect_tx(tx_size), is_rect_tx_allowed(xd, mbmi))); - - aom_write_symbol(w, depth, ec_ctx->tx_size_cdf[tx_size_cat][tx_size_ctx], - max_depths + 1); - } -} - -static int write_skip(const AV1_COMMON *cm, const MACROBLOCKD *xd, - int segment_id, const MB_MODE_INFO *mi, aom_writer *w) { - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { - return 1; - } else { - const int skip = mi->skip; - const int ctx = av1_get_skip_context(xd); - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - aom_write_symbol(w, skip, ec_ctx->skip_cdfs[ctx], 2); - return skip; - } -} - -static int write_skip_mode(const AV1_COMMON *cm, const MACROBLOCKD *xd, - int segment_id, const MB_MODE_INFO *mi, - aom_writer *w) { - if (!cm->skip_mode_flag) return 0; - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { - return 0; - } - const int skip_mode = mi->skip_mode; - if (!is_comp_ref_allowed(mi->sb_type)) { - assert(!skip_mode); - return 0; - } - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME) || - segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV)) { - // These features imply single-reference mode, while skip mode implies - // compound reference. Hence, the two are mutually exclusive. - // In other words, skip_mode is implicitly 0 here. - assert(!skip_mode); - return 0; - } - const int ctx = av1_get_skip_mode_context(xd); - aom_write_symbol(w, skip_mode, xd->tile_ctx->skip_mode_cdfs[ctx], 2); - return skip_mode; -} - -static void write_is_inter(const AV1_COMMON *cm, const MACROBLOCKD *xd, - int segment_id, aom_writer *w, const int is_inter) { - if (!segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV)) { - assert(is_inter); - return; - } - const int ctx = av1_get_intra_inter_context(xd); - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - aom_write_symbol(w, is_inter, ec_ctx->intra_inter_cdf[ctx], 2); - } -} - -static void write_motion_mode(const AV1_COMMON *cm, MACROBLOCKD *xd, - const MB_MODE_INFO *mbmi, aom_writer *w) { - MOTION_MODE last_motion_mode_allowed = - cm->switchable_motion_mode - ? motion_mode_allowed(cm->global_motion, xd, mbmi, - cm->allow_warped_motion) - : SIMPLE_TRANSLATION; - assert(mbmi->motion_mode <= last_motion_mode_allowed); - switch (last_motion_mode_allowed) { - case SIMPLE_TRANSLATION: break; - case OBMC_CAUSAL: - aom_write_symbol(w, mbmi->motion_mode == OBMC_CAUSAL, - xd->tile_ctx->obmc_cdf[mbmi->sb_type], 2); - break; - default: - aom_write_symbol(w, mbmi->motion_mode, - xd->tile_ctx->motion_mode_cdf[mbmi->sb_type], - MOTION_MODES); - } -} - -static void write_delta_qindex(const MACROBLOCKD *xd, int delta_qindex, - aom_writer *w) { - int sign = delta_qindex < 0; - int abs = sign ? -delta_qindex : delta_qindex; - int rem_bits, thr; - int smallval = abs < DELTA_Q_SMALL ? 1 : 0; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - - aom_write_symbol(w, AOMMIN(abs, DELTA_Q_SMALL), ec_ctx->delta_q_cdf, - DELTA_Q_PROBS + 1); - - if (!smallval) { - rem_bits = get_msb(abs - 1); - thr = (1 << rem_bits) + 1; - aom_write_literal(w, rem_bits - 1, 3); - aom_write_literal(w, abs - thr, rem_bits); - } - if (abs > 0) { - aom_write_bit(w, sign); - } -} - -static void write_delta_lflevel(const AV1_COMMON *cm, const MACROBLOCKD *xd, - int lf_id, int delta_lflevel, aom_writer *w) { - int sign = delta_lflevel < 0; - int abs = sign ? -delta_lflevel : delta_lflevel; - int rem_bits, thr; - int smallval = abs < DELTA_LF_SMALL ? 1 : 0; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - - if (cm->delta_lf_multi) { - assert(lf_id >= 0 && lf_id < (av1_num_planes(cm) > 1 ? FRAME_LF_COUNT - : FRAME_LF_COUNT - 2)); - aom_write_symbol(w, AOMMIN(abs, DELTA_LF_SMALL), - ec_ctx->delta_lf_multi_cdf[lf_id], DELTA_LF_PROBS + 1); - } else { - aom_write_symbol(w, AOMMIN(abs, DELTA_LF_SMALL), ec_ctx->delta_lf_cdf, - DELTA_LF_PROBS + 1); - } - - if (!smallval) { - rem_bits = get_msb(abs - 1); - thr = (1 << rem_bits) + 1; - aom_write_literal(w, rem_bits - 1, 3); - aom_write_literal(w, abs - thr, rem_bits); - } - if (abs > 0) { - aom_write_bit(w, sign); - } -} - -static void pack_map_tokens(aom_writer *w, const TOKENEXTRA **tp, int n, - int num) { - const TOKENEXTRA *p = *tp; - write_uniform(w, n, p->token); // The first color index. - ++p; - --num; - for (int i = 0; i < num; ++i) { - aom_write_symbol(w, p->token, p->color_map_cdf, n); - ++p; - } - *tp = p; -} - -static void pack_txb_tokens(aom_writer *w, AV1_COMMON *cm, MACROBLOCK *const x, - const TOKENEXTRA **tp, - const TOKENEXTRA *const tok_end, MACROBLOCKD *xd, - MB_MODE_INFO *mbmi, int plane, - BLOCK_SIZE plane_bsize, aom_bit_depth_t bit_depth, - int block, int blk_row, int blk_col, - TX_SIZE tx_size, TOKEN_STATS *token_stats) { - const int max_blocks_high = max_block_high(xd, plane_bsize, plane); - const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane); - - if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return; - - const struct macroblockd_plane *const pd = &xd->plane[plane]; - const TX_SIZE plane_tx_size = - plane ? av1_get_max_uv_txsize(mbmi->sb_type, pd->subsampling_x, - pd->subsampling_y) - : mbmi->inter_tx_size[av1_get_txb_size_index(plane_bsize, blk_row, - blk_col)]; - - if (tx_size == plane_tx_size || plane) { - tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block); - const uint16_t eob = x->mbmi_ext->eobs[plane][block]; - TXB_CTX txb_ctx = { x->mbmi_ext->txb_skip_ctx[plane][block], - x->mbmi_ext->dc_sign_ctx[plane][block] }; - av1_write_coeffs_txb(cm, xd, w, blk_row, blk_col, plane, tx_size, tcoeff, - eob, &txb_ctx); -#if CONFIG_RD_DEBUG - TOKEN_STATS tmp_token_stats; - init_token_stats(&tmp_token_stats); - token_stats->txb_coeff_cost_map[blk_row][blk_col] = tmp_token_stats.cost; - token_stats->cost += tmp_token_stats.cost; -#endif - } else { - const TX_SIZE sub_txs = sub_tx_size_map[tx_size]; - const int bsw = tx_size_wide_unit[sub_txs]; - const int bsh = tx_size_high_unit[sub_txs]; - const int step = bsh * bsw; - - assert(bsw > 0 && bsh > 0); - - for (int r = 0; r < tx_size_high_unit[tx_size]; r += bsh) { - for (int c = 0; c < tx_size_wide_unit[tx_size]; c += bsw) { - const int offsetr = blk_row + r; - const int offsetc = blk_col + c; - if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue; - pack_txb_tokens(w, cm, x, tp, tok_end, xd, mbmi, plane, plane_bsize, - bit_depth, block, offsetr, offsetc, sub_txs, - token_stats); - block += step; - } - } - } -} - -static INLINE void set_spatial_segment_id(const AV1_COMMON *const cm, - uint8_t *segment_ids, - BLOCK_SIZE bsize, int mi_row, - int mi_col, int segment_id) { - const int mi_offset = mi_row * cm->mi_cols + mi_col; - const int bw = mi_size_wide[bsize]; - const int bh = mi_size_high[bsize]; - const int xmis = AOMMIN(cm->mi_cols - mi_col, bw); - const int ymis = AOMMIN(cm->mi_rows - mi_row, bh); - int x, y; - - for (y = 0; y < ymis; ++y) - for (x = 0; x < xmis; ++x) - segment_ids[mi_offset + y * cm->mi_cols + x] = segment_id; -} - -int av1_neg_interleave(int x, int ref, int max) { - assert(x < max); - const int diff = x - ref; - if (!ref) return x; - if (ref >= (max - 1)) return -x + max - 1; - if (2 * ref < max) { - if (abs(diff) <= ref) { - if (diff > 0) - return (diff << 1) - 1; - else - return ((-diff) << 1); - } - return x; - } else { - if (abs(diff) < (max - ref)) { - if (diff > 0) - return (diff << 1) - 1; - else - return ((-diff) << 1); - } - return (max - x) - 1; - } -} - -static void write_segment_id(AV1_COMP *cpi, const MB_MODE_INFO *const mbmi, - aom_writer *w, const struct segmentation *seg, - struct segmentation_probs *segp, int mi_row, - int mi_col, int skip) { - if (!seg->enabled || !seg->update_map) return; - - AV1_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - int cdf_num; - const int pred = av1_get_spatial_seg_pred(cm, xd, mi_row, mi_col, &cdf_num); - - if (skip) { - // Still need to transmit tx size for intra blocks even if skip is - // true. Changing segment_id may make the tx size become invalid, e.g - // changing from lossless to lossy. - assert(is_inter_block(mbmi) || !cpi->has_lossless_segment); - - set_spatial_segment_id(cm, cm->current_frame_seg_map, mbmi->sb_type, mi_row, - mi_col, pred); - set_spatial_segment_id(cm, cpi->segmentation_map, mbmi->sb_type, mi_row, - mi_col, pred); - /* mbmi is read only but we need to update segment_id */ - ((MB_MODE_INFO *)mbmi)->segment_id = pred; - return; - } - - const int coded_id = - av1_neg_interleave(mbmi->segment_id, pred, seg->last_active_segid + 1); - aom_cdf_prob *pred_cdf = segp->spatial_pred_seg_cdf[cdf_num]; - aom_write_symbol(w, coded_id, pred_cdf, MAX_SEGMENTS); - set_spatial_segment_id(cm, cm->current_frame_seg_map, mbmi->sb_type, mi_row, - mi_col, mbmi->segment_id); -} - -#define WRITE_REF_BIT(bname, pname) \ - aom_write_symbol(w, bname, av1_get_pred_cdf_##pname(xd), 2) - -// This function encodes the reference frame -static void write_ref_frames(const AV1_COMMON *cm, const MACROBLOCKD *xd, - aom_writer *w) { - const MB_MODE_INFO *const mbmi = xd->mi[0]; - const int is_compound = has_second_ref(mbmi); - const int segment_id = mbmi->segment_id; - - // If segment level coding of this signal is disabled... - // or the segment allows multiple reference frame options - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { - assert(!is_compound); - assert(mbmi->ref_frame[0] == - get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME)); - } else if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP) || - segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV)) { - assert(!is_compound); - assert(mbmi->ref_frame[0] == LAST_FRAME); - } else { - // does the feature use compound prediction or not - // (if not specified at the frame/segment level) - if (cm->reference_mode == REFERENCE_MODE_SELECT) { - if (is_comp_ref_allowed(mbmi->sb_type)) - aom_write_symbol(w, is_compound, av1_get_reference_mode_cdf(xd), 2); - } else { - assert((!is_compound) == (cm->reference_mode == SINGLE_REFERENCE)); - } - - if (is_compound) { - const COMP_REFERENCE_TYPE comp_ref_type = has_uni_comp_refs(mbmi) - ? UNIDIR_COMP_REFERENCE - : BIDIR_COMP_REFERENCE; - aom_write_symbol(w, comp_ref_type, av1_get_comp_reference_type_cdf(xd), - 2); - - if (comp_ref_type == UNIDIR_COMP_REFERENCE) { - const int bit = mbmi->ref_frame[0] == BWDREF_FRAME; - WRITE_REF_BIT(bit, uni_comp_ref_p); - - if (!bit) { - assert(mbmi->ref_frame[0] == LAST_FRAME); - const int bit1 = mbmi->ref_frame[1] == LAST3_FRAME || - mbmi->ref_frame[1] == GOLDEN_FRAME; - WRITE_REF_BIT(bit1, uni_comp_ref_p1); - if (bit1) { - const int bit2 = mbmi->ref_frame[1] == GOLDEN_FRAME; - WRITE_REF_BIT(bit2, uni_comp_ref_p2); - } - } else { - assert(mbmi->ref_frame[1] == ALTREF_FRAME); - } - - return; - } - - assert(comp_ref_type == BIDIR_COMP_REFERENCE); - - const int bit = (mbmi->ref_frame[0] == GOLDEN_FRAME || - mbmi->ref_frame[0] == LAST3_FRAME); - WRITE_REF_BIT(bit, comp_ref_p); - - if (!bit) { - const int bit1 = mbmi->ref_frame[0] == LAST2_FRAME; - WRITE_REF_BIT(bit1, comp_ref_p1); - } else { - const int bit2 = mbmi->ref_frame[0] == GOLDEN_FRAME; - WRITE_REF_BIT(bit2, comp_ref_p2); - } - - const int bit_bwd = mbmi->ref_frame[1] == ALTREF_FRAME; - WRITE_REF_BIT(bit_bwd, comp_bwdref_p); - - if (!bit_bwd) { - WRITE_REF_BIT(mbmi->ref_frame[1] == ALTREF2_FRAME, comp_bwdref_p1); - } - - } else { - const int bit0 = (mbmi->ref_frame[0] <= ALTREF_FRAME && - mbmi->ref_frame[0] >= BWDREF_FRAME); - WRITE_REF_BIT(bit0, single_ref_p1); - - if (bit0) { - const int bit1 = mbmi->ref_frame[0] == ALTREF_FRAME; - WRITE_REF_BIT(bit1, single_ref_p2); - - if (!bit1) { - WRITE_REF_BIT(mbmi->ref_frame[0] == ALTREF2_FRAME, single_ref_p6); - } - } else { - const int bit2 = (mbmi->ref_frame[0] == LAST3_FRAME || - mbmi->ref_frame[0] == GOLDEN_FRAME); - WRITE_REF_BIT(bit2, single_ref_p3); - - if (!bit2) { - const int bit3 = mbmi->ref_frame[0] != LAST_FRAME; - WRITE_REF_BIT(bit3, single_ref_p4); - } else { - const int bit4 = mbmi->ref_frame[0] != LAST3_FRAME; - WRITE_REF_BIT(bit4, single_ref_p5); - } - } - } - } -} - -static void write_filter_intra_mode_info(const AV1_COMMON *cm, - const MACROBLOCKD *xd, - const MB_MODE_INFO *const mbmi, - aom_writer *w) { - if (av1_filter_intra_allowed(cm, mbmi)) { - aom_write_symbol(w, mbmi->filter_intra_mode_info.use_filter_intra, - xd->tile_ctx->filter_intra_cdfs[mbmi->sb_type], 2); - if (mbmi->filter_intra_mode_info.use_filter_intra) { - const FILTER_INTRA_MODE mode = - mbmi->filter_intra_mode_info.filter_intra_mode; - aom_write_symbol(w, mode, xd->tile_ctx->filter_intra_mode_cdf, - FILTER_INTRA_MODES); - } - } -} - -static void write_angle_delta(aom_writer *w, int angle_delta, - aom_cdf_prob *cdf) { - aom_write_symbol(w, angle_delta + MAX_ANGLE_DELTA, cdf, - 2 * MAX_ANGLE_DELTA + 1); -} - -static void write_mb_interp_filter(AV1_COMP *cpi, const MACROBLOCKD *xd, - aom_writer *w) { - AV1_COMMON *const cm = &cpi->common; - const MB_MODE_INFO *const mbmi = xd->mi[0]; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - - if (!av1_is_interp_needed(xd)) { - assert(mbmi->interp_filters == - av1_broadcast_interp_filter( - av1_unswitchable_filter(cm->interp_filter))); - return; - } - if (cm->interp_filter == SWITCHABLE) { - int dir; - for (dir = 0; dir < 2; ++dir) { - const int ctx = av1_get_pred_context_switchable_interp(xd, dir); - InterpFilter filter = - av1_extract_interp_filter(mbmi->interp_filters, dir); - aom_write_symbol(w, filter, ec_ctx->switchable_interp_cdf[ctx], - SWITCHABLE_FILTERS); - ++cpi->interp_filter_selected[0][filter]; - if (cm->seq_params.enable_dual_filter == 0) return; - } - } -} - -// Transmit color values with delta encoding. Write the first value as -// literal, and the deltas between each value and the previous one. "min_val" is -// the smallest possible value of the deltas. -static void delta_encode_palette_colors(const int *colors, int num, - int bit_depth, int min_val, - aom_writer *w) { - if (num <= 0) return; - assert(colors[0] < (1 << bit_depth)); - aom_write_literal(w, colors[0], bit_depth); - if (num == 1) return; - int max_delta = 0; - int deltas[PALETTE_MAX_SIZE]; - memset(deltas, 0, sizeof(deltas)); - for (int i = 1; i < num; ++i) { - assert(colors[i] < (1 << bit_depth)); - const int delta = colors[i] - colors[i - 1]; - deltas[i - 1] = delta; - assert(delta >= min_val); - if (delta > max_delta) max_delta = delta; - } - const int min_bits = bit_depth - 3; - int bits = AOMMAX(av1_ceil_log2(max_delta + 1 - min_val), min_bits); - assert(bits <= bit_depth); - int range = (1 << bit_depth) - colors[0] - min_val; - aom_write_literal(w, bits - min_bits, 2); - for (int i = 0; i < num - 1; ++i) { - aom_write_literal(w, deltas[i] - min_val, bits); - range -= deltas[i]; - bits = AOMMIN(bits, av1_ceil_log2(range)); - } -} - -// Transmit luma palette color values. First signal if each color in the color -// cache is used. Those colors that are not in the cache are transmitted with -// delta encoding. -static void write_palette_colors_y(const MACROBLOCKD *const xd, - const PALETTE_MODE_INFO *const pmi, - int bit_depth, aom_writer *w) { - const int n = pmi->palette_size[0]; - uint16_t color_cache[2 * PALETTE_MAX_SIZE]; - const int n_cache = av1_get_palette_cache(xd, 0, color_cache); - int out_cache_colors[PALETTE_MAX_SIZE]; - uint8_t cache_color_found[2 * PALETTE_MAX_SIZE]; - const int n_out_cache = - av1_index_color_cache(color_cache, n_cache, pmi->palette_colors, n, - cache_color_found, out_cache_colors); - int n_in_cache = 0; - for (int i = 0; i < n_cache && n_in_cache < n; ++i) { - const int found = cache_color_found[i]; - aom_write_bit(w, found); - n_in_cache += found; - } - assert(n_in_cache + n_out_cache == n); - delta_encode_palette_colors(out_cache_colors, n_out_cache, bit_depth, 1, w); -} - -// Write chroma palette color values. U channel is handled similarly to the luma -// channel. For v channel, either use delta encoding or transmit raw values -// directly, whichever costs less. -static void write_palette_colors_uv(const MACROBLOCKD *const xd, - const PALETTE_MODE_INFO *const pmi, - int bit_depth, aom_writer *w) { - const int n = pmi->palette_size[1]; - const uint16_t *colors_u = pmi->palette_colors + PALETTE_MAX_SIZE; - const uint16_t *colors_v = pmi->palette_colors + 2 * PALETTE_MAX_SIZE; - // U channel colors. - uint16_t color_cache[2 * PALETTE_MAX_SIZE]; - const int n_cache = av1_get_palette_cache(xd, 1, color_cache); - int out_cache_colors[PALETTE_MAX_SIZE]; - uint8_t cache_color_found[2 * PALETTE_MAX_SIZE]; - const int n_out_cache = av1_index_color_cache( - color_cache, n_cache, colors_u, n, cache_color_found, out_cache_colors); - int n_in_cache = 0; - for (int i = 0; i < n_cache && n_in_cache < n; ++i) { - const int found = cache_color_found[i]; - aom_write_bit(w, found); - n_in_cache += found; - } - delta_encode_palette_colors(out_cache_colors, n_out_cache, bit_depth, 0, w); - - // V channel colors. Don't use color cache as the colors are not sorted. - const int max_val = 1 << bit_depth; - int zero_count = 0, min_bits_v = 0; - int bits_v = - av1_get_palette_delta_bits_v(pmi, bit_depth, &zero_count, &min_bits_v); - const int rate_using_delta = - 2 + bit_depth + (bits_v + 1) * (n - 1) - zero_count; - const int rate_using_raw = bit_depth * n; - if (rate_using_delta < rate_using_raw) { // delta encoding - assert(colors_v[0] < (1 << bit_depth)); - aom_write_bit(w, 1); - aom_write_literal(w, bits_v - min_bits_v, 2); - aom_write_literal(w, colors_v[0], bit_depth); - for (int i = 1; i < n; ++i) { - assert(colors_v[i] < (1 << bit_depth)); - if (colors_v[i] == colors_v[i - 1]) { // No need to signal sign bit. - aom_write_literal(w, 0, bits_v); - continue; - } - const int delta = abs((int)colors_v[i] - colors_v[i - 1]); - const int sign_bit = colors_v[i] < colors_v[i - 1]; - if (delta <= max_val - delta) { - aom_write_literal(w, delta, bits_v); - aom_write_bit(w, sign_bit); - } else { - aom_write_literal(w, max_val - delta, bits_v); - aom_write_bit(w, !sign_bit); - } - } - } else { // Transmit raw values. - aom_write_bit(w, 0); - for (int i = 0; i < n; ++i) { - assert(colors_v[i] < (1 << bit_depth)); - aom_write_literal(w, colors_v[i], bit_depth); - } - } -} - -static void write_palette_mode_info(const AV1_COMMON *cm, const MACROBLOCKD *xd, - const MB_MODE_INFO *const mbmi, int mi_row, - int mi_col, aom_writer *w) { - const int num_planes = av1_num_planes(cm); - const BLOCK_SIZE bsize = mbmi->sb_type; - assert(av1_allow_palette(cm->allow_screen_content_tools, bsize)); - const PALETTE_MODE_INFO *const pmi = &mbmi->palette_mode_info; - const int bsize_ctx = av1_get_palette_bsize_ctx(bsize); - - if (mbmi->mode == DC_PRED) { - const int n = pmi->palette_size[0]; - const int palette_y_mode_ctx = av1_get_palette_mode_ctx(xd); - aom_write_symbol( - w, n > 0, - xd->tile_ctx->palette_y_mode_cdf[bsize_ctx][palette_y_mode_ctx], 2); - if (n > 0) { - aom_write_symbol(w, n - PALETTE_MIN_SIZE, - xd->tile_ctx->palette_y_size_cdf[bsize_ctx], - PALETTE_SIZES); - write_palette_colors_y(xd, pmi, cm->seq_params.bit_depth, w); - } - } - - const int uv_dc_pred = - num_planes > 1 && mbmi->uv_mode == UV_DC_PRED && - is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x, - xd->plane[1].subsampling_y); - if (uv_dc_pred) { - const int n = pmi->palette_size[1]; - const int palette_uv_mode_ctx = (pmi->palette_size[0] > 0); - aom_write_symbol(w, n > 0, - xd->tile_ctx->palette_uv_mode_cdf[palette_uv_mode_ctx], 2); - if (n > 0) { - aom_write_symbol(w, n - PALETTE_MIN_SIZE, - xd->tile_ctx->palette_uv_size_cdf[bsize_ctx], - PALETTE_SIZES); - write_palette_colors_uv(xd, pmi, cm->seq_params.bit_depth, w); - } - } -} - -void av1_write_tx_type(const AV1_COMMON *const cm, const MACROBLOCKD *xd, - int blk_row, int blk_col, int plane, TX_SIZE tx_size, - aom_writer *w) { - MB_MODE_INFO *mbmi = xd->mi[0]; - const int is_inter = is_inter_block(mbmi); - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - - // Only y plane's tx_type is transmitted - if (plane > 0) return; - PLANE_TYPE plane_type = get_plane_type(plane); - TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, tx_size, - cm->reduced_tx_set_used); - - const TX_SIZE square_tx_size = txsize_sqr_map[tx_size]; - if (get_ext_tx_types(tx_size, is_inter, cm->reduced_tx_set_used) > 1 && - ((!cm->seg.enabled && cm->base_qindex > 0) || - (cm->seg.enabled && xd->qindex[mbmi->segment_id] > 0)) && - !mbmi->skip && - !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { - const TxSetType tx_set_type = - av1_get_ext_tx_set_type(tx_size, is_inter, cm->reduced_tx_set_used); - const int eset = get_ext_tx_set(tx_size, is_inter, cm->reduced_tx_set_used); - // eset == 0 should correspond to a set with only DCT_DCT and there - // is no need to send the tx_type - assert(eset > 0); - assert(av1_ext_tx_used[tx_set_type][tx_type]); - if (is_inter) { - aom_write_symbol(w, av1_ext_tx_ind[tx_set_type][tx_type], - ec_ctx->inter_ext_tx_cdf[eset][square_tx_size], - av1_num_ext_tx_set[tx_set_type]); - } else { - PREDICTION_MODE intra_dir; - if (mbmi->filter_intra_mode_info.use_filter_intra) - intra_dir = - fimode_to_intradir[mbmi->filter_intra_mode_info.filter_intra_mode]; - else - intra_dir = mbmi->mode; - aom_write_symbol( - w, av1_ext_tx_ind[tx_set_type][tx_type], - ec_ctx->intra_ext_tx_cdf[eset][square_tx_size][intra_dir], - av1_num_ext_tx_set[tx_set_type]); - } - } -} - -static void write_intra_y_mode_nonkf(FRAME_CONTEXT *frame_ctx, BLOCK_SIZE bsize, - PREDICTION_MODE mode, aom_writer *w) { - aom_write_symbol(w, mode, frame_ctx->y_mode_cdf[size_group_lookup[bsize]], - INTRA_MODES); -} - -static void write_intra_uv_mode(FRAME_CONTEXT *frame_ctx, - UV_PREDICTION_MODE uv_mode, - PREDICTION_MODE y_mode, - CFL_ALLOWED_TYPE cfl_allowed, aom_writer *w) { - aom_write_symbol(w, uv_mode, frame_ctx->uv_mode_cdf[cfl_allowed][y_mode], - UV_INTRA_MODES - !cfl_allowed); -} - -static void write_cfl_alphas(FRAME_CONTEXT *const ec_ctx, int idx, - int joint_sign, aom_writer *w) { - aom_write_symbol(w, joint_sign, ec_ctx->cfl_sign_cdf, CFL_JOINT_SIGNS); - // Magnitudes are only signaled for nonzero codes. - if (CFL_SIGN_U(joint_sign) != CFL_SIGN_ZERO) { - aom_cdf_prob *cdf_u = ec_ctx->cfl_alpha_cdf[CFL_CONTEXT_U(joint_sign)]; - aom_write_symbol(w, CFL_IDX_U(idx), cdf_u, CFL_ALPHABET_SIZE); - } - if (CFL_SIGN_V(joint_sign) != CFL_SIGN_ZERO) { - aom_cdf_prob *cdf_v = ec_ctx->cfl_alpha_cdf[CFL_CONTEXT_V(joint_sign)]; - aom_write_symbol(w, CFL_IDX_V(idx), cdf_v, CFL_ALPHABET_SIZE); - } -} - -static void write_cdef(AV1_COMMON *cm, MACROBLOCKD *const xd, aom_writer *w, - int skip, int mi_col, int mi_row) { - if (cm->coded_lossless || cm->allow_intrabc) { - // Initialize to indicate no CDEF for safety. - cm->cdef_bits = 0; - cm->cdef_strengths[0] = 0; - cm->nb_cdef_strengths = 1; - cm->cdef_uv_strengths[0] = 0; - return; - } - - const int m = ~((1 << (6 - MI_SIZE_LOG2)) - 1); - const MB_MODE_INFO *mbmi = - cm->mi_grid_visible[(mi_row & m) * cm->mi_stride + (mi_col & m)]; - // Initialise when at top left part of the superblock - if (!(mi_row & (cm->seq_params.mib_size - 1)) && - !(mi_col & (cm->seq_params.mib_size - 1))) { // Top left? - xd->cdef_preset[0] = xd->cdef_preset[1] = xd->cdef_preset[2] = - xd->cdef_preset[3] = -1; - } - - // Emit CDEF param at first non-skip coding block - const int mask = 1 << (6 - MI_SIZE_LOG2); - const int index = cm->seq_params.sb_size == BLOCK_128X128 - ? !!(mi_col & mask) + 2 * !!(mi_row & mask) - : 0; - if (xd->cdef_preset[index] == -1 && !skip) { - aom_write_literal(w, mbmi->cdef_strength, cm->cdef_bits); - xd->cdef_preset[index] = mbmi->cdef_strength; - } -} - -static void write_inter_segment_id(AV1_COMP *cpi, aom_writer *w, - const struct segmentation *const seg, - struct segmentation_probs *const segp, - int mi_row, int mi_col, int skip, - int preskip) { - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - const MB_MODE_INFO *const mbmi = xd->mi[0]; - AV1_COMMON *const cm = &cpi->common; - - if (seg->update_map) { - if (preskip) { - if (!seg->segid_preskip) return; - } else { - if (seg->segid_preskip) return; - if (skip) { - write_segment_id(cpi, mbmi, w, seg, segp, mi_row, mi_col, 1); - if (seg->temporal_update) ((MB_MODE_INFO *)mbmi)->seg_id_predicted = 0; - return; - } - } - if (seg->temporal_update) { - const int pred_flag = mbmi->seg_id_predicted; - aom_cdf_prob *pred_cdf = av1_get_pred_cdf_seg_id(segp, xd); - aom_write_symbol(w, pred_flag, pred_cdf, 2); - if (!pred_flag) { - write_segment_id(cpi, mbmi, w, seg, segp, mi_row, mi_col, 0); - } - if (pred_flag) { - set_spatial_segment_id(cm, cm->current_frame_seg_map, mbmi->sb_type, - mi_row, mi_col, mbmi->segment_id); - } - } else { - write_segment_id(cpi, mbmi, w, seg, segp, mi_row, mi_col, 0); - } - } -} - -// If delta q is present, writes delta_q index. -// Also writes delta_q loop filter levels, if present. -static void write_delta_q_params(AV1_COMP *cpi, const int mi_row, - const int mi_col, int skip, aom_writer *w) { - AV1_COMMON *const cm = &cpi->common; - if (cm->delta_q_present_flag) { - MACROBLOCK *const x = &cpi->td.mb; - MACROBLOCKD *const xd = &x->e_mbd; - const MB_MODE_INFO *const mbmi = xd->mi[0]; - const BLOCK_SIZE bsize = mbmi->sb_type; - const int super_block_upper_left = - ((mi_row & (cm->seq_params.mib_size - 1)) == 0) && - ((mi_col & (cm->seq_params.mib_size - 1)) == 0); - - if ((bsize != cm->seq_params.sb_size || skip == 0) && - super_block_upper_left) { - assert(mbmi->current_qindex > 0); - const int reduced_delta_qindex = - (mbmi->current_qindex - xd->current_qindex) / cm->delta_q_res; - write_delta_qindex(xd, reduced_delta_qindex, w); - xd->current_qindex = mbmi->current_qindex; - if (cm->delta_lf_present_flag) { - if (cm->delta_lf_multi) { - const int frame_lf_count = - av1_num_planes(cm) > 1 ? FRAME_LF_COUNT : FRAME_LF_COUNT - 2; - for (int lf_id = 0; lf_id < frame_lf_count; ++lf_id) { - int reduced_delta_lflevel = - (mbmi->delta_lf[lf_id] - xd->delta_lf[lf_id]) / - cm->delta_lf_res; - write_delta_lflevel(cm, xd, lf_id, reduced_delta_lflevel, w); - xd->delta_lf[lf_id] = mbmi->delta_lf[lf_id]; - } - } else { - int reduced_delta_lflevel = - (mbmi->delta_lf_from_base - xd->delta_lf_from_base) / - cm->delta_lf_res; - write_delta_lflevel(cm, xd, -1, reduced_delta_lflevel, w); - xd->delta_lf_from_base = mbmi->delta_lf_from_base; - } - } - } - } -} - -static void write_intra_prediction_modes(AV1_COMP *cpi, const int mi_row, - const int mi_col, int is_keyframe, - aom_writer *w) { - const AV1_COMMON *const cm = &cpi->common; - MACROBLOCK *const x = &cpi->td.mb; - MACROBLOCKD *const xd = &x->e_mbd; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - const MB_MODE_INFO *const mbmi = xd->mi[0]; - const PREDICTION_MODE mode = mbmi->mode; - const BLOCK_SIZE bsize = mbmi->sb_type; - - // Y mode. - if (is_keyframe) { - const MB_MODE_INFO *const above_mi = xd->above_mbmi; - const MB_MODE_INFO *const left_mi = xd->left_mbmi; - write_intra_y_mode_kf(ec_ctx, mbmi, above_mi, left_mi, mode, w); - } else { - write_intra_y_mode_nonkf(ec_ctx, bsize, mode, w); - } - - // Y angle delta. - const int use_angle_delta = av1_use_angle_delta(bsize); - if (use_angle_delta && av1_is_directional_mode(mode)) { - write_angle_delta(w, mbmi->angle_delta[PLANE_TYPE_Y], - ec_ctx->angle_delta_cdf[mode - V_PRED]); - } - - // UV mode and UV angle delta. - if (!cm->seq_params.monochrome && - is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x, - xd->plane[1].subsampling_y)) { - const UV_PREDICTION_MODE uv_mode = mbmi->uv_mode; - write_intra_uv_mode(ec_ctx, uv_mode, mode, is_cfl_allowed(xd), w); - if (uv_mode == UV_CFL_PRED) - write_cfl_alphas(ec_ctx, mbmi->cfl_alpha_idx, mbmi->cfl_alpha_signs, w); - if (use_angle_delta && av1_is_directional_mode(get_uv_mode(uv_mode))) { - write_angle_delta(w, mbmi->angle_delta[PLANE_TYPE_UV], - ec_ctx->angle_delta_cdf[uv_mode - V_PRED]); - } - } - - // Palette. - if (av1_allow_palette(cm->allow_screen_content_tools, bsize)) { - write_palette_mode_info(cm, xd, mbmi, mi_row, mi_col, w); - } - - // Filter intra. - write_filter_intra_mode_info(cm, xd, mbmi, w); -} - -static void pack_inter_mode_mvs(AV1_COMP *cpi, const int mi_row, - const int mi_col, aom_writer *w) { - AV1_COMMON *const cm = &cpi->common; - MACROBLOCK *const x = &cpi->td.mb; - MACROBLOCKD *const xd = &x->e_mbd; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - const struct segmentation *const seg = &cm->seg; - struct segmentation_probs *const segp = &ec_ctx->seg; - const MB_MODE_INFO *const mbmi = xd->mi[0]; - const MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext; - const PREDICTION_MODE mode = mbmi->mode; - const int segment_id = mbmi->segment_id; - const BLOCK_SIZE bsize = mbmi->sb_type; - const int allow_hp = cm->allow_high_precision_mv; - const int is_inter = is_inter_block(mbmi); - const int is_compound = has_second_ref(mbmi); - int ref; - - write_inter_segment_id(cpi, w, seg, segp, mi_row, mi_col, 0, 1); - - write_skip_mode(cm, xd, segment_id, mbmi, w); - - assert(IMPLIES(mbmi->skip_mode, mbmi->skip)); - const int skip = - mbmi->skip_mode ? 1 : write_skip(cm, xd, segment_id, mbmi, w); - - write_inter_segment_id(cpi, w, seg, segp, mi_row, mi_col, skip, 0); - - write_cdef(cm, xd, w, skip, mi_col, mi_row); - - write_delta_q_params(cpi, mi_row, mi_col, skip, w); - - if (!mbmi->skip_mode) write_is_inter(cm, xd, mbmi->segment_id, w, is_inter); - - if (mbmi->skip_mode) return; - - if (!is_inter) { - write_intra_prediction_modes(cpi, mi_row, mi_col, 0, w); - } else { - int16_t mode_ctx; - - av1_collect_neighbors_ref_counts(xd); - - write_ref_frames(cm, xd, w); - - mode_ctx = - av1_mode_context_analyzer(mbmi_ext->mode_context, mbmi->ref_frame); - - // If segment skip is not enabled code the mode. - if (!segfeature_active(seg, segment_id, SEG_LVL_SKIP)) { - if (is_inter_compound_mode(mode)) - write_inter_compound_mode(xd, w, mode, mode_ctx); - else if (is_inter_singleref_mode(mode)) - write_inter_mode(w, mode, ec_ctx, mode_ctx); - - if (mode == NEWMV || mode == NEW_NEWMV || have_nearmv_in_inter_mode(mode)) - write_drl_idx(ec_ctx, mbmi, mbmi_ext, w); - else - assert(mbmi->ref_mv_idx == 0); - } - - if (mode == NEWMV || mode == NEW_NEWMV) { - for (ref = 0; ref < 1 + is_compound; ++ref) { - nmv_context *nmvc = &ec_ctx->nmvc; - const int_mv ref_mv = av1_get_ref_mv(x, ref); - av1_encode_mv(cpi, w, &mbmi->mv[ref].as_mv, &ref_mv.as_mv, nmvc, - allow_hp); - } - } else if (mode == NEAREST_NEWMV || mode == NEAR_NEWMV) { - nmv_context *nmvc = &ec_ctx->nmvc; - const int_mv ref_mv = av1_get_ref_mv(x, 1); - av1_encode_mv(cpi, w, &mbmi->mv[1].as_mv, &ref_mv.as_mv, nmvc, allow_hp); - } else if (mode == NEW_NEARESTMV || mode == NEW_NEARMV) { - nmv_context *nmvc = &ec_ctx->nmvc; - const int_mv ref_mv = av1_get_ref_mv(x, 0); - av1_encode_mv(cpi, w, &mbmi->mv[0].as_mv, &ref_mv.as_mv, nmvc, allow_hp); - } - - if (cpi->common.reference_mode != COMPOUND_REFERENCE && - cpi->common.seq_params.enable_interintra_compound && - is_interintra_allowed(mbmi)) { - const int interintra = mbmi->ref_frame[1] == INTRA_FRAME; - const int bsize_group = size_group_lookup[bsize]; - aom_write_symbol(w, interintra, ec_ctx->interintra_cdf[bsize_group], 2); - if (interintra) { - aom_write_symbol(w, mbmi->interintra_mode, - ec_ctx->interintra_mode_cdf[bsize_group], - INTERINTRA_MODES); - if (is_interintra_wedge_used(bsize)) { - aom_write_symbol(w, mbmi->use_wedge_interintra, - ec_ctx->wedge_interintra_cdf[bsize], 2); - if (mbmi->use_wedge_interintra) { - aom_write_symbol(w, mbmi->interintra_wedge_index, - ec_ctx->wedge_idx_cdf[bsize], 16); - assert(mbmi->interintra_wedge_sign == 0); - } - } - } - } - - if (mbmi->ref_frame[1] != INTRA_FRAME) write_motion_mode(cm, xd, mbmi, w); - - // First write idx to indicate current compound inter prediction mode group - // Group A (0): jnt_comp, compound_average - // Group B (1): interintra, compound_diffwtd, wedge - if (has_second_ref(mbmi)) { - const int masked_compound_used = is_any_masked_compound_used(bsize) && - cm->seq_params.enable_masked_compound; - - if (masked_compound_used) { - const int ctx_comp_group_idx = get_comp_group_idx_context(xd); - aom_write_symbol(w, mbmi->comp_group_idx, - ec_ctx->comp_group_idx_cdf[ctx_comp_group_idx], 2); - } else { - assert(mbmi->comp_group_idx == 0); - } - - if (mbmi->comp_group_idx == 0) { - if (mbmi->compound_idx) - assert(mbmi->interinter_comp.type == COMPOUND_AVERAGE); - - if (cm->seq_params.enable_jnt_comp) { - const int comp_index_ctx = get_comp_index_context(cm, xd); - aom_write_symbol(w, mbmi->compound_idx, - ec_ctx->compound_index_cdf[comp_index_ctx], 2); - } else { - assert(mbmi->compound_idx == 1); - } - } else { - assert(cpi->common.reference_mode != SINGLE_REFERENCE && - is_inter_compound_mode(mbmi->mode) && - mbmi->motion_mode == SIMPLE_TRANSLATION); - assert(masked_compound_used); - // compound_diffwtd, wedge - assert(mbmi->interinter_comp.type == COMPOUND_WEDGE || - mbmi->interinter_comp.type == COMPOUND_DIFFWTD); - - if (is_interinter_compound_used(COMPOUND_WEDGE, bsize)) - aom_write_symbol(w, mbmi->interinter_comp.type - 1, - ec_ctx->compound_type_cdf[bsize], - COMPOUND_TYPES - 1); - - if (mbmi->interinter_comp.type == COMPOUND_WEDGE) { - assert(is_interinter_compound_used(COMPOUND_WEDGE, bsize)); - aom_write_symbol(w, mbmi->interinter_comp.wedge_index, - ec_ctx->wedge_idx_cdf[bsize], 16); - aom_write_bit(w, mbmi->interinter_comp.wedge_sign); - } else { - assert(mbmi->interinter_comp.type == COMPOUND_DIFFWTD); - aom_write_literal(w, mbmi->interinter_comp.mask_type, - MAX_DIFFWTD_MASK_BITS); - } - } - } - - write_mb_interp_filter(cpi, xd, w); - } -} - -static void write_intrabc_info(MACROBLOCKD *xd, - const MB_MODE_INFO_EXT *mbmi_ext, - aom_writer *w) { - const MB_MODE_INFO *const mbmi = xd->mi[0]; - int use_intrabc = is_intrabc_block(mbmi); - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - aom_write_symbol(w, use_intrabc, ec_ctx->intrabc_cdf, 2); - if (use_intrabc) { - assert(mbmi->mode == DC_PRED); - assert(mbmi->uv_mode == UV_DC_PRED); - assert(mbmi->motion_mode == SIMPLE_TRANSLATION); - int_mv dv_ref = mbmi_ext->ref_mv_stack[INTRA_FRAME][0].this_mv; - av1_encode_dv(w, &mbmi->mv[0].as_mv, &dv_ref.as_mv, &ec_ctx->ndvc); - } -} - -static void write_mb_modes_kf(AV1_COMP *cpi, MACROBLOCKD *xd, - const MB_MODE_INFO_EXT *mbmi_ext, - const int mi_row, const int mi_col, - aom_writer *w) { - AV1_COMMON *const cm = &cpi->common; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - const struct segmentation *const seg = &cm->seg; - struct segmentation_probs *const segp = &ec_ctx->seg; - const MB_MODE_INFO *const mbmi = xd->mi[0]; - - if (seg->segid_preskip && seg->update_map) - write_segment_id(cpi, mbmi, w, seg, segp, mi_row, mi_col, 0); - - const int skip = write_skip(cm, xd, mbmi->segment_id, mbmi, w); - - if (!seg->segid_preskip && seg->update_map) - write_segment_id(cpi, mbmi, w, seg, segp, mi_row, mi_col, skip); - - write_cdef(cm, xd, w, skip, mi_col, mi_row); - - write_delta_q_params(cpi, mi_row, mi_col, skip, w); - - if (av1_allow_intrabc(cm)) { - write_intrabc_info(xd, mbmi_ext, w); - if (is_intrabc_block(mbmi)) return; - } - - write_intra_prediction_modes(cpi, mi_row, mi_col, 1, w); -} - -#if CONFIG_RD_DEBUG -static void dump_mode_info(MODE_INFO *mi) { - printf("\nmi->mi_row == %d\n", mi->mi_row); - printf("&& mi->mi_col == %d\n", mi->mi_col); - printf("&& mi->sb_type == %d\n", mi->sb_type); - printf("&& mi->tx_size == %d\n", mi->tx_size); - printf("&& mi->mode == %d\n", mi->mode); -} -static int rd_token_stats_mismatch(RD_STATS *rd_stats, TOKEN_STATS *token_stats, - int plane) { - if (rd_stats->txb_coeff_cost[plane] != token_stats->cost) { - int r, c; - printf("\nplane %d rd_stats->txb_coeff_cost %d token_stats->cost %d\n", - plane, rd_stats->txb_coeff_cost[plane], token_stats->cost); - printf("rd txb_coeff_cost_map\n"); - for (r = 0; r < TXB_COEFF_COST_MAP_SIZE; ++r) { - for (c = 0; c < TXB_COEFF_COST_MAP_SIZE; ++c) { - printf("%d ", rd_stats->txb_coeff_cost_map[plane][r][c]); - } - printf("\n"); - } - - printf("pack txb_coeff_cost_map\n"); - for (r = 0; r < TXB_COEFF_COST_MAP_SIZE; ++r) { - for (c = 0; c < TXB_COEFF_COST_MAP_SIZE; ++c) { - printf("%d ", token_stats->txb_coeff_cost_map[r][c]); - } - printf("\n"); - } - return 1; - } - return 0; -} -#endif - -#if ENC_MISMATCH_DEBUG -static void enc_dump_logs(AV1_COMP *cpi, int mi_row, int mi_col) { - AV1_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - xd->mi = cm->mi_grid_visible + (mi_row * cm->mi_stride + mi_col); - const MB_MODE_INFO *const *mbmi = xd->mi[0]; - if (is_inter_block(mbmi)) { -#define FRAME_TO_CHECK 11 - if (cm->current_video_frame == FRAME_TO_CHECK && cm->show_frame == 1) { - const BLOCK_SIZE bsize = mbmi->sb_type; - - int_mv mv[2]; - int is_comp_ref = has_second_ref(mbmi); - int ref; - - for (ref = 0; ref < 1 + is_comp_ref; ++ref) - mv[ref].as_mv = mbmi->mv[ref].as_mv; - - if (!is_comp_ref) { - mv[1].as_int = 0; - } - - MACROBLOCK *const x = &cpi->td.mb; - const MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext; - const int16_t mode_ctx = - is_comp_ref ? mbmi_ext->compound_mode_context[mbmi->ref_frame[0]] - : av1_mode_context_analyzer(mbmi_ext->mode_context, - mbmi->ref_frame); - - const int16_t newmv_ctx = mode_ctx & NEWMV_CTX_MASK; - int16_t zeromv_ctx = -1; - int16_t refmv_ctx = -1; - - if (mbmi->mode != NEWMV) { - zeromv_ctx = (mode_ctx >> GLOBALMV_OFFSET) & GLOBALMV_CTX_MASK; - if (mbmi->mode != GLOBALMV) - refmv_ctx = (mode_ctx >> REFMV_OFFSET) & REFMV_CTX_MASK; - } - - printf( - "=== ENCODER ===: " - "Frame=%d, (mi_row,mi_col)=(%d,%d), skip_mode=%d, mode=%d, bsize=%d, " - "show_frame=%d, mv[0]=(%d,%d), mv[1]=(%d,%d), ref[0]=%d, " - "ref[1]=%d, motion_mode=%d, mode_ctx=%d, " - "newmv_ctx=%d, zeromv_ctx=%d, refmv_ctx=%d, tx_size=%d\n", - cm->current_video_frame, mi_row, mi_col, mbmi->skip_mode, mbmi->mode, - bsize, cm->show_frame, mv[0].as_mv.row, mv[0].as_mv.col, - mv[1].as_mv.row, mv[1].as_mv.col, mbmi->ref_frame[0], - mbmi->ref_frame[1], mbmi->motion_mode, mode_ctx, newmv_ctx, - zeromv_ctx, refmv_ctx, mbmi->tx_size); - } - } -} -#endif // ENC_MISMATCH_DEBUG - -static void write_mbmi_b(AV1_COMP *cpi, const TileInfo *const tile, - aom_writer *w, int mi_row, int mi_col) { - AV1_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - int bh, bw; - xd->mi = cm->mi_grid_visible + (mi_row * cm->mi_stride + mi_col); - MB_MODE_INFO *m = xd->mi[0]; - - assert(m->sb_type <= cm->seq_params.sb_size || - (m->sb_type >= BLOCK_SIZES && m->sb_type < BLOCK_SIZES_ALL)); - - bh = mi_size_high[m->sb_type]; - bw = mi_size_wide[m->sb_type]; - - cpi->td.mb.mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col); - - set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols); - - xd->above_txfm_context = cm->above_txfm_context[tile->tile_row] + mi_col; - xd->left_txfm_context = - xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK); - - if (frame_is_intra_only(cm)) { - write_mb_modes_kf(cpi, xd, cpi->td.mb.mbmi_ext, mi_row, mi_col, w); - } else { - // has_subpel_mv_component needs the ref frame buffers set up to look - // up if they are scaled. has_subpel_mv_component is in turn needed by - // write_switchable_interp_filter, which is called by pack_inter_mode_mvs. - set_ref_ptrs(cm, xd, m->ref_frame[0], m->ref_frame[1]); - -#if ENC_MISMATCH_DEBUG - enc_dump_logs(cpi, mi_row, mi_col); -#endif // ENC_MISMATCH_DEBUG - - pack_inter_mode_mvs(cpi, mi_row, mi_col, w); - } -} - -static void write_inter_txb_coeff(AV1_COMMON *const cm, MACROBLOCK *const x, - MB_MODE_INFO *const mbmi, aom_writer *w, - const TOKENEXTRA **tok, - const TOKENEXTRA *const tok_end, - TOKEN_STATS *token_stats, const int row, - const int col, int *block, const int plane) { - MACROBLOCKD *const xd = &x->e_mbd; - const struct macroblockd_plane *const pd = &xd->plane[plane]; - const BLOCK_SIZE bsize = mbmi->sb_type; - const BLOCK_SIZE bsizec = - scale_chroma_bsize(bsize, pd->subsampling_x, pd->subsampling_y); - - const BLOCK_SIZE plane_bsize = - get_plane_block_size(bsizec, pd->subsampling_x, pd->subsampling_y); - - const TX_SIZE max_tx_size = get_vartx_max_txsize(xd, plane_bsize, plane); - const int step = - tx_size_wide_unit[max_tx_size] * tx_size_high_unit[max_tx_size]; - const int bkw = tx_size_wide_unit[max_tx_size]; - const int bkh = tx_size_high_unit[max_tx_size]; - - const BLOCK_SIZE max_unit_bsize = - get_plane_block_size(BLOCK_64X64, pd->subsampling_x, pd->subsampling_y); - int mu_blocks_wide = block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0]; - int mu_blocks_high = block_size_high[max_unit_bsize] >> tx_size_high_log2[0]; - - int blk_row, blk_col; - - const int num_4x4_w = block_size_wide[plane_bsize] >> tx_size_wide_log2[0]; - const int num_4x4_h = block_size_high[plane_bsize] >> tx_size_high_log2[0]; - - const int unit_height = - AOMMIN(mu_blocks_high + (row >> pd->subsampling_y), num_4x4_h); - const int unit_width = - AOMMIN(mu_blocks_wide + (col >> pd->subsampling_x), num_4x4_w); - for (blk_row = row >> pd->subsampling_y; blk_row < unit_height; - blk_row += bkh) { - for (blk_col = col >> pd->subsampling_x; blk_col < unit_width; - blk_col += bkw) { - pack_txb_tokens(w, cm, x, tok, tok_end, xd, mbmi, plane, plane_bsize, - cm->seq_params.bit_depth, *block, blk_row, blk_col, - max_tx_size, token_stats); - *block += step; - } - } -} - -static void write_tokens_b(AV1_COMP *cpi, const TileInfo *const tile, - aom_writer *w, const TOKENEXTRA **tok, - const TOKENEXTRA *const tok_end, int mi_row, - int mi_col) { - AV1_COMMON *const cm = &cpi->common; - const int num_planes = av1_num_planes(cm); - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - const int mi_offset = mi_row * cm->mi_stride + mi_col; - MB_MODE_INFO *const mbmi = *(cm->mi_grid_visible + mi_offset); - int plane; - int bh, bw; - MACROBLOCK *const x = &cpi->td.mb; - (void)tok; - (void)tok_end; - xd->mi = cm->mi_grid_visible + mi_offset; - - assert(mbmi->sb_type <= cm->seq_params.sb_size || - (mbmi->sb_type >= BLOCK_SIZES && mbmi->sb_type < BLOCK_SIZES_ALL)); - - bh = mi_size_high[mbmi->sb_type]; - bw = mi_size_wide[mbmi->sb_type]; - cpi->td.mb.mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col); - - set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols); - - if (!mbmi->skip) { - if (!is_inter_block(mbmi)) - av1_write_coeffs_mb(cm, x, mi_row, mi_col, w, mbmi->sb_type); - - if (is_inter_block(mbmi)) { - int block[MAX_MB_PLANE] = { 0 }; - const BLOCK_SIZE plane_bsize = mbmi->sb_type; - assert(plane_bsize == get_plane_block_size(mbmi->sb_type, - xd->plane[0].subsampling_x, - xd->plane[0].subsampling_y)); - const int num_4x4_w = - block_size_wide[plane_bsize] >> tx_size_wide_log2[0]; - const int num_4x4_h = - block_size_high[plane_bsize] >> tx_size_high_log2[0]; - int row, col; - TOKEN_STATS token_stats; - init_token_stats(&token_stats); - - const BLOCK_SIZE max_unit_bsize = BLOCK_64X64; - assert(max_unit_bsize == - get_plane_block_size(BLOCK_64X64, xd->plane[0].subsampling_x, - xd->plane[0].subsampling_y)); - int mu_blocks_wide = - block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0]; - int mu_blocks_high = - block_size_high[max_unit_bsize] >> tx_size_high_log2[0]; - - mu_blocks_wide = AOMMIN(num_4x4_w, mu_blocks_wide); - mu_blocks_high = AOMMIN(num_4x4_h, mu_blocks_high); - - for (row = 0; row < num_4x4_h; row += mu_blocks_high) { - for (col = 0; col < num_4x4_w; col += mu_blocks_wide) { - for (plane = 0; plane < num_planes && is_inter_block(mbmi); ++plane) { - const struct macroblockd_plane *const pd = &xd->plane[plane]; - if (!is_chroma_reference(mi_row, mi_col, mbmi->sb_type, - pd->subsampling_x, pd->subsampling_y)) { - continue; - } - write_inter_txb_coeff(cm, x, mbmi, w, tok, tok_end, &token_stats, - row, col, &block[plane], plane); - } - } -#if CONFIG_RD_DEBUG - if (mbmi->sb_type >= BLOCK_8X8 && - rd_token_stats_mismatch(&mbmi->rd_stats, &token_stats, plane)) { - dump_mode_info(m); - assert(0); - } -#endif // CONFIG_RD_DEBUG - } - } - } -} - -static void write_modes_b(AV1_COMP *cpi, const TileInfo *const tile, - aom_writer *w, const TOKENEXTRA **tok, - const TOKENEXTRA *const tok_end, int mi_row, - int mi_col) { - write_mbmi_b(cpi, tile, w, mi_row, mi_col); - - AV1_COMMON *cm = &cpi->common; - MACROBLOCKD *xd = &cpi->td.mb.e_mbd; - MB_MODE_INFO *mbmi = xd->mi[0]; - for (int plane = 0; plane < AOMMIN(2, av1_num_planes(cm)); ++plane) { - const uint8_t palette_size_plane = - mbmi->palette_mode_info.palette_size[plane]; - assert(!mbmi->skip_mode || !palette_size_plane); - if (palette_size_plane > 0) { - assert(mbmi->use_intrabc == 0); - assert(av1_allow_palette(cm->allow_screen_content_tools, mbmi->sb_type)); - int rows, cols; - av1_get_block_dimensions(mbmi->sb_type, plane, xd, NULL, NULL, &rows, - &cols); - assert(*tok < tok_end); - pack_map_tokens(w, tok, palette_size_plane, rows * cols); - } - } - - BLOCK_SIZE bsize = mbmi->sb_type; - int is_inter_tx = is_inter_block(mbmi) || is_intrabc_block(mbmi); - int skip = mbmi->skip; - int segment_id = mbmi->segment_id; - if (cm->tx_mode == TX_MODE_SELECT && block_signals_txsize(bsize) && - !(is_inter_tx && skip) && !xd->lossless[segment_id]) { - if (is_inter_tx) { // This implies skip flag is 0. - const TX_SIZE max_tx_size = get_vartx_max_txsize(xd, bsize, 0); - const int txbh = tx_size_high_unit[max_tx_size]; - const int txbw = tx_size_wide_unit[max_tx_size]; - const int width = block_size_wide[bsize] >> tx_size_wide_log2[0]; - const int height = block_size_high[bsize] >> tx_size_high_log2[0]; - int idx, idy; - for (idy = 0; idy < height; idy += txbh) - for (idx = 0; idx < width; idx += txbw) - write_tx_size_vartx(xd, mbmi, max_tx_size, 0, idy, idx, w); - } else { - write_selected_tx_size(xd, w); - set_txfm_ctxs(mbmi->tx_size, xd->n4_w, xd->n4_h, 0, xd); - } - } else { - set_txfm_ctxs(mbmi->tx_size, xd->n4_w, xd->n4_h, - skip && is_inter_block(mbmi), xd); - } - - write_tokens_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); -} - -static void write_partition(const AV1_COMMON *const cm, - const MACROBLOCKD *const xd, int hbs, int mi_row, - int mi_col, PARTITION_TYPE p, BLOCK_SIZE bsize, - aom_writer *w) { - const int is_partition_point = bsize >= BLOCK_8X8; - - if (!is_partition_point) return; - - const int has_rows = (mi_row + hbs) < cm->mi_rows; - const int has_cols = (mi_col + hbs) < cm->mi_cols; - const int ctx = partition_plane_context(xd, mi_row, mi_col, bsize); - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - - if (!has_rows && !has_cols) { - assert(p == PARTITION_SPLIT); - return; - } - - if (has_rows && has_cols) { - aom_write_symbol(w, p, ec_ctx->partition_cdf[ctx], - partition_cdf_length(bsize)); - } else if (!has_rows && has_cols) { - assert(p == PARTITION_SPLIT || p == PARTITION_HORZ); - assert(bsize > BLOCK_8X8); - aom_cdf_prob cdf[2]; - partition_gather_vert_alike(cdf, ec_ctx->partition_cdf[ctx], bsize); - aom_write_cdf(w, p == PARTITION_SPLIT, cdf, 2); - } else { - assert(has_rows && !has_cols); - assert(p == PARTITION_SPLIT || p == PARTITION_VERT); - assert(bsize > BLOCK_8X8); - aom_cdf_prob cdf[2]; - partition_gather_horz_alike(cdf, ec_ctx->partition_cdf[ctx], bsize); - aom_write_cdf(w, p == PARTITION_SPLIT, cdf, 2); - } -} - -static void write_modes_sb(AV1_COMP *const cpi, const TileInfo *const tile, - aom_writer *const w, const TOKENEXTRA **tok, - const TOKENEXTRA *const tok_end, int mi_row, - int mi_col, BLOCK_SIZE bsize) { - const AV1_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - const int hbs = mi_size_wide[bsize] / 2; - const int quarter_step = mi_size_wide[bsize] / 4; - int i; - const PARTITION_TYPE partition = get_partition(cm, mi_row, mi_col, bsize); - const BLOCK_SIZE subsize = get_partition_subsize(bsize, partition); - - if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; - - const int num_planes = av1_num_planes(cm); - for (int plane = 0; plane < num_planes; ++plane) { - int rcol0, rcol1, rrow0, rrow1; - if (av1_loop_restoration_corners_in_sb(cm, plane, mi_row, mi_col, bsize, - &rcol0, &rcol1, &rrow0, &rrow1)) { - const int rstride = cm->rst_info[plane].horz_units_per_tile; - for (int rrow = rrow0; rrow < rrow1; ++rrow) { - for (int rcol = rcol0; rcol < rcol1; ++rcol) { - const int runit_idx = rcol + rrow * rstride; - const RestorationUnitInfo *rui = - &cm->rst_info[plane].unit_info[runit_idx]; - loop_restoration_write_sb_coeffs(cm, xd, rui, w, plane, - cpi->td.counts); - } - } - } - } - - write_partition(cm, xd, hbs, mi_row, mi_col, partition, bsize, w); - switch (partition) { - case PARTITION_NONE: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - break; - case PARTITION_HORZ: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - if (mi_row + hbs < cm->mi_rows) - write_modes_b(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col); - break; - case PARTITION_VERT: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - if (mi_col + hbs < cm->mi_cols) - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col + hbs); - break; - case PARTITION_SPLIT: - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col, subsize); - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col + hbs, subsize); - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col, subsize); - write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col + hbs, - subsize); - break; - case PARTITION_HORZ_A: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col + hbs); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col); - break; - case PARTITION_HORZ_B: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col + hbs); - break; - case PARTITION_VERT_A: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col + hbs); - break; - case PARTITION_VERT_B: - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col + hbs); - write_modes_b(cpi, tile, w, tok, tok_end, mi_row + hbs, mi_col + hbs); - break; - case PARTITION_HORZ_4: - for (i = 0; i < 4; ++i) { - int this_mi_row = mi_row + i * quarter_step; - if (i > 0 && this_mi_row >= cm->mi_rows) break; - - write_modes_b(cpi, tile, w, tok, tok_end, this_mi_row, mi_col); - } - break; - case PARTITION_VERT_4: - for (i = 0; i < 4; ++i) { - int this_mi_col = mi_col + i * quarter_step; - if (i > 0 && this_mi_col >= cm->mi_cols) break; - - write_modes_b(cpi, tile, w, tok, tok_end, mi_row, this_mi_col); - } - break; - default: assert(0); - } - - // update partition context - update_ext_partition_context(xd, mi_row, mi_col, subsize, bsize, partition); -} - -static void write_modes(AV1_COMP *const cpi, const TileInfo *const tile, - aom_writer *const w, int tile_row, int tile_col) { - AV1_COMMON *const cm = &cpi->common; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - const int mi_row_start = tile->mi_row_start; - const int mi_row_end = tile->mi_row_end; - const int mi_col_start = tile->mi_col_start; - const int mi_col_end = tile->mi_col_end; - int mi_row, mi_col, sb_row_in_tile; - - av1_zero_above_context(cm, xd, mi_col_start, mi_col_end, tile->tile_row); - av1_init_above_context(cm, xd, tile->tile_row); - - if (cpi->common.delta_q_present_flag) { - xd->current_qindex = cpi->common.base_qindex; - if (cpi->common.delta_lf_present_flag) { - av1_reset_loop_filter_delta(xd, av1_num_planes(cm)); - } - } - - for (mi_row = mi_row_start; mi_row < mi_row_end; - mi_row += cm->seq_params.mib_size) { - sb_row_in_tile = - (mi_row - tile->mi_row_start) >> cm->seq_params.mib_size_log2; - const TOKENEXTRA *tok = - cpi->tplist[tile_row][tile_col][sb_row_in_tile].start; - const TOKENEXTRA *tok_end = - tok + cpi->tplist[tile_row][tile_col][sb_row_in_tile].count; - - av1_zero_left_context(xd); - - for (mi_col = mi_col_start; mi_col < mi_col_end; - mi_col += cm->seq_params.mib_size) { - write_modes_sb(cpi, tile, w, &tok, tok_end, mi_row, mi_col, - cm->seq_params.sb_size); - } - assert(tok == cpi->tplist[tile_row][tile_col][sb_row_in_tile].stop); - } -} - -static void encode_restoration_mode(AV1_COMMON *cm, - struct aom_write_bit_buffer *wb) { - assert(!cm->all_lossless); - if (!cm->seq_params.enable_restoration) return; - if (cm->allow_intrabc) return; - const int num_planes = av1_num_planes(cm); - int all_none = 1, chroma_none = 1; - for (int p = 0; p < num_planes; ++p) { - RestorationInfo *rsi = &cm->rst_info[p]; - if (rsi->frame_restoration_type != RESTORE_NONE) { - all_none = 0; - chroma_none &= p == 0; - } - switch (rsi->frame_restoration_type) { - case RESTORE_NONE: - aom_wb_write_bit(wb, 0); - aom_wb_write_bit(wb, 0); - break; - case RESTORE_WIENER: - aom_wb_write_bit(wb, 1); - aom_wb_write_bit(wb, 0); - break; - case RESTORE_SGRPROJ: - aom_wb_write_bit(wb, 1); - aom_wb_write_bit(wb, 1); - break; - case RESTORE_SWITCHABLE: - aom_wb_write_bit(wb, 0); - aom_wb_write_bit(wb, 1); - break; - default: assert(0); - } - } - if (!all_none) { - assert(cm->seq_params.sb_size == BLOCK_64X64 || - cm->seq_params.sb_size == BLOCK_128X128); - const int sb_size = cm->seq_params.sb_size == BLOCK_128X128 ? 128 : 64; - - RestorationInfo *rsi = &cm->rst_info[0]; - - assert(rsi->restoration_unit_size >= sb_size); - assert(RESTORATION_UNITSIZE_MAX == 256); - - if (sb_size == 64) { - aom_wb_write_bit(wb, rsi->restoration_unit_size > 64); - } - if (rsi->restoration_unit_size > 64) { - aom_wb_write_bit(wb, rsi->restoration_unit_size > 128); - } - } - - if (num_planes > 1) { - int s = AOMMIN(cm->seq_params.subsampling_x, cm->seq_params.subsampling_y); - if (s && !chroma_none) { - aom_wb_write_bit(wb, cm->rst_info[1].restoration_unit_size != - cm->rst_info[0].restoration_unit_size); - assert(cm->rst_info[1].restoration_unit_size == - cm->rst_info[0].restoration_unit_size || - cm->rst_info[1].restoration_unit_size == - (cm->rst_info[0].restoration_unit_size >> s)); - assert(cm->rst_info[2].restoration_unit_size == - cm->rst_info[1].restoration_unit_size); - } else if (!s) { - assert(cm->rst_info[1].restoration_unit_size == - cm->rst_info[0].restoration_unit_size); - assert(cm->rst_info[2].restoration_unit_size == - cm->rst_info[1].restoration_unit_size); - } - } -} - -static void write_wiener_filter(int wiener_win, const WienerInfo *wiener_info, - WienerInfo *ref_wiener_info, aom_writer *wb) { - if (wiener_win == WIENER_WIN) - aom_write_primitive_refsubexpfin( - wb, WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1, - WIENER_FILT_TAP0_SUBEXP_K, - ref_wiener_info->vfilter[0] - WIENER_FILT_TAP0_MINV, - wiener_info->vfilter[0] - WIENER_FILT_TAP0_MINV); - else - assert(wiener_info->vfilter[0] == 0 && - wiener_info->vfilter[WIENER_WIN - 1] == 0); - aom_write_primitive_refsubexpfin( - wb, WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1, - WIENER_FILT_TAP1_SUBEXP_K, - ref_wiener_info->vfilter[1] - WIENER_FILT_TAP1_MINV, - wiener_info->vfilter[1] - WIENER_FILT_TAP1_MINV); - aom_write_primitive_refsubexpfin( - wb, WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1, - WIENER_FILT_TAP2_SUBEXP_K, - ref_wiener_info->vfilter[2] - WIENER_FILT_TAP2_MINV, - wiener_info->vfilter[2] - WIENER_FILT_TAP2_MINV); - if (wiener_win == WIENER_WIN) - aom_write_primitive_refsubexpfin( - wb, WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1, - WIENER_FILT_TAP0_SUBEXP_K, - ref_wiener_info->hfilter[0] - WIENER_FILT_TAP0_MINV, - wiener_info->hfilter[0] - WIENER_FILT_TAP0_MINV); - else - assert(wiener_info->hfilter[0] == 0 && - wiener_info->hfilter[WIENER_WIN - 1] == 0); - aom_write_primitive_refsubexpfin( - wb, WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1, - WIENER_FILT_TAP1_SUBEXP_K, - ref_wiener_info->hfilter[1] - WIENER_FILT_TAP1_MINV, - wiener_info->hfilter[1] - WIENER_FILT_TAP1_MINV); - aom_write_primitive_refsubexpfin( - wb, WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1, - WIENER_FILT_TAP2_SUBEXP_K, - ref_wiener_info->hfilter[2] - WIENER_FILT_TAP2_MINV, - wiener_info->hfilter[2] - WIENER_FILT_TAP2_MINV); - memcpy(ref_wiener_info, wiener_info, sizeof(*wiener_info)); -} - -static void write_sgrproj_filter(const SgrprojInfo *sgrproj_info, - SgrprojInfo *ref_sgrproj_info, - aom_writer *wb) { - aom_write_literal(wb, sgrproj_info->ep, SGRPROJ_PARAMS_BITS); - const sgr_params_type *params = &sgr_params[sgrproj_info->ep]; - - if (params->r[0] == 0) { - assert(sgrproj_info->xqd[0] == 0); - aom_write_primitive_refsubexpfin( - wb, SGRPROJ_PRJ_MAX1 - SGRPROJ_PRJ_MIN1 + 1, SGRPROJ_PRJ_SUBEXP_K, - ref_sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1, - sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1); - } else if (params->r[1] == 0) { - aom_write_primitive_refsubexpfin( - wb, SGRPROJ_PRJ_MAX0 - SGRPROJ_PRJ_MIN0 + 1, SGRPROJ_PRJ_SUBEXP_K, - ref_sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0, - sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0); - } else { - aom_write_primitive_refsubexpfin( - wb, SGRPROJ_PRJ_MAX0 - SGRPROJ_PRJ_MIN0 + 1, SGRPROJ_PRJ_SUBEXP_K, - ref_sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0, - sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0); - aom_write_primitive_refsubexpfin( - wb, SGRPROJ_PRJ_MAX1 - SGRPROJ_PRJ_MIN1 + 1, SGRPROJ_PRJ_SUBEXP_K, - ref_sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1, - sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1); - } - - memcpy(ref_sgrproj_info, sgrproj_info, sizeof(*sgrproj_info)); -} - -static void loop_restoration_write_sb_coeffs(const AV1_COMMON *const cm, - MACROBLOCKD *xd, - const RestorationUnitInfo *rui, - aom_writer *const w, int plane, - FRAME_COUNTS *counts) { - const RestorationInfo *rsi = cm->rst_info + plane; - RestorationType frame_rtype = rsi->frame_restoration_type; - if (frame_rtype == RESTORE_NONE) return; - - (void)counts; - assert(!cm->all_lossless); - - const int wiener_win = (plane > 0) ? WIENER_WIN_CHROMA : WIENER_WIN; - WienerInfo *wiener_info = xd->wiener_info + plane; - SgrprojInfo *sgrproj_info = xd->sgrproj_info + plane; - RestorationType unit_rtype = rui->restoration_type; - - if (frame_rtype == RESTORE_SWITCHABLE) { - aom_write_symbol(w, unit_rtype, xd->tile_ctx->switchable_restore_cdf, - RESTORE_SWITCHABLE_TYPES); -#if CONFIG_ENTROPY_STATS - ++counts->switchable_restore[unit_rtype]; -#endif - switch (unit_rtype) { - case RESTORE_WIENER: - write_wiener_filter(wiener_win, &rui->wiener_info, wiener_info, w); - break; - case RESTORE_SGRPROJ: - write_sgrproj_filter(&rui->sgrproj_info, sgrproj_info, w); - break; - default: assert(unit_rtype == RESTORE_NONE); break; - } - } else if (frame_rtype == RESTORE_WIENER) { - aom_write_symbol(w, unit_rtype != RESTORE_NONE, - xd->tile_ctx->wiener_restore_cdf, 2); -#if CONFIG_ENTROPY_STATS - ++counts->wiener_restore[unit_rtype != RESTORE_NONE]; -#endif - if (unit_rtype != RESTORE_NONE) { - write_wiener_filter(wiener_win, &rui->wiener_info, wiener_info, w); - } - } else if (frame_rtype == RESTORE_SGRPROJ) { - aom_write_symbol(w, unit_rtype != RESTORE_NONE, - xd->tile_ctx->sgrproj_restore_cdf, 2); -#if CONFIG_ENTROPY_STATS - ++counts->sgrproj_restore[unit_rtype != RESTORE_NONE]; -#endif - if (unit_rtype != RESTORE_NONE) { - write_sgrproj_filter(&rui->sgrproj_info, sgrproj_info, w); - } - } -} - -static void encode_loopfilter(AV1_COMMON *cm, struct aom_write_bit_buffer *wb) { - assert(!cm->coded_lossless); - if (cm->allow_intrabc) return; - const int num_planes = av1_num_planes(cm); - int i; - struct loopfilter *lf = &cm->lf; - - // Encode the loop filter level and type - aom_wb_write_literal(wb, lf->filter_level[0], 6); - aom_wb_write_literal(wb, lf->filter_level[1], 6); - if (num_planes > 1) { - if (lf->filter_level[0] || lf->filter_level[1]) { - aom_wb_write_literal(wb, lf->filter_level_u, 6); - aom_wb_write_literal(wb, lf->filter_level_v, 6); - } - } - aom_wb_write_literal(wb, lf->sharpness_level, 3); - - // Write out loop filter deltas applied at the MB level based on mode or - // ref frame (if they are enabled). - aom_wb_write_bit(wb, lf->mode_ref_delta_enabled); - - if (lf->mode_ref_delta_enabled) { - aom_wb_write_bit(wb, lf->mode_ref_delta_update); - - if (lf->mode_ref_delta_update) { - const int prime_idx = cm->primary_ref_frame; - const int buf_idx = - prime_idx == PRIMARY_REF_NONE ? -1 : cm->frame_refs[prime_idx].idx; - int8_t last_ref_deltas[REF_FRAMES]; - if (prime_idx == PRIMARY_REF_NONE || buf_idx < 0) { - av1_set_default_ref_deltas(last_ref_deltas); - } else { - memcpy(last_ref_deltas, cm->buffer_pool->frame_bufs[buf_idx].ref_deltas, - REF_FRAMES); - } - for (i = 0; i < REF_FRAMES; i++) { - const int delta = lf->ref_deltas[i]; - const int changed = delta != last_ref_deltas[i]; - aom_wb_write_bit(wb, changed); - if (changed) aom_wb_write_inv_signed_literal(wb, delta, 6); - } - - int8_t last_mode_deltas[MAX_MODE_LF_DELTAS]; - if (prime_idx == PRIMARY_REF_NONE || buf_idx < 0) { - av1_set_default_mode_deltas(last_mode_deltas); - } else { - memcpy(last_mode_deltas, - cm->buffer_pool->frame_bufs[buf_idx].mode_deltas, - MAX_MODE_LF_DELTAS); - } - for (i = 0; i < MAX_MODE_LF_DELTAS; i++) { - const int delta = lf->mode_deltas[i]; - const int changed = delta != last_mode_deltas[i]; - aom_wb_write_bit(wb, changed); - if (changed) aom_wb_write_inv_signed_literal(wb, delta, 6); - } - } - } -} - -static void encode_cdef(const AV1_COMMON *cm, struct aom_write_bit_buffer *wb) { - assert(!cm->coded_lossless); - if (!cm->seq_params.enable_cdef) return; - if (cm->allow_intrabc) return; - const int num_planes = av1_num_planes(cm); - int i; - aom_wb_write_literal(wb, cm->cdef_pri_damping - 3, 2); - assert(cm->cdef_pri_damping == cm->cdef_sec_damping); - aom_wb_write_literal(wb, cm->cdef_bits, 2); - for (i = 0; i < cm->nb_cdef_strengths; i++) { - aom_wb_write_literal(wb, cm->cdef_strengths[i], CDEF_STRENGTH_BITS); - if (num_planes > 1) - aom_wb_write_literal(wb, cm->cdef_uv_strengths[i], CDEF_STRENGTH_BITS); - } -} - -static void write_delta_q(struct aom_write_bit_buffer *wb, int delta_q) { - if (delta_q != 0) { - aom_wb_write_bit(wb, 1); - aom_wb_write_inv_signed_literal(wb, delta_q, 6); - } else { - aom_wb_write_bit(wb, 0); - } -} - -static void encode_quantization(const AV1_COMMON *const cm, - struct aom_write_bit_buffer *wb) { - const int num_planes = av1_num_planes(cm); - - aom_wb_write_literal(wb, cm->base_qindex, QINDEX_BITS); - write_delta_q(wb, cm->y_dc_delta_q); - if (num_planes > 1) { - int diff_uv_delta = (cm->u_dc_delta_q != cm->v_dc_delta_q) || - (cm->u_ac_delta_q != cm->v_ac_delta_q); - if (cm->seq_params.separate_uv_delta_q) aom_wb_write_bit(wb, diff_uv_delta); - write_delta_q(wb, cm->u_dc_delta_q); - write_delta_q(wb, cm->u_ac_delta_q); - if (diff_uv_delta) { - write_delta_q(wb, cm->v_dc_delta_q); - write_delta_q(wb, cm->v_ac_delta_q); - } - } - aom_wb_write_bit(wb, cm->using_qmatrix); - if (cm->using_qmatrix) { - aom_wb_write_literal(wb, cm->qm_y, QM_LEVEL_BITS); - aom_wb_write_literal(wb, cm->qm_u, QM_LEVEL_BITS); - if (!cm->seq_params.separate_uv_delta_q) - assert(cm->qm_u == cm->qm_v); - else - aom_wb_write_literal(wb, cm->qm_v, QM_LEVEL_BITS); - } -} - -static void encode_segmentation(AV1_COMMON *cm, MACROBLOCKD *xd, - struct aom_write_bit_buffer *wb) { - int i, j; - struct segmentation *seg = &cm->seg; - - aom_wb_write_bit(wb, seg->enabled); - if (!seg->enabled) return; - - // Write update flags - if (cm->primary_ref_frame == PRIMARY_REF_NONE) { - assert(seg->update_map == 1); - seg->temporal_update = 0; - assert(seg->update_data == 1); - } else { - aom_wb_write_bit(wb, seg->update_map); - if (seg->update_map) { - // Select the coding strategy (temporal or spatial) - av1_choose_segmap_coding_method(cm, xd); - aom_wb_write_bit(wb, seg->temporal_update); - } - aom_wb_write_bit(wb, seg->update_data); - } - - // Segmentation data - if (seg->update_data) { - for (i = 0; i < MAX_SEGMENTS; i++) { - for (j = 0; j < SEG_LVL_MAX; j++) { - const int active = segfeature_active(seg, i, j); - aom_wb_write_bit(wb, active); - if (active) { - const int data_max = av1_seg_feature_data_max(j); - const int data_min = -data_max; - const int ubits = get_unsigned_bits(data_max); - const int data = clamp(get_segdata(seg, i, j), data_min, data_max); - - if (av1_is_segfeature_signed(j)) { - aom_wb_write_inv_signed_literal(wb, data, ubits); - } else { - aom_wb_write_literal(wb, data, ubits); - } - } - } - } - } -} - -static void write_tx_mode(AV1_COMMON *cm, TX_MODE *mode, - struct aom_write_bit_buffer *wb) { - if (cm->coded_lossless) { - *mode = ONLY_4X4; - return; - } - aom_wb_write_bit(wb, *mode == TX_MODE_SELECT); -} - -static void write_frame_interp_filter(InterpFilter filter, - struct aom_write_bit_buffer *wb) { - aom_wb_write_bit(wb, filter == SWITCHABLE); - if (filter != SWITCHABLE) - aom_wb_write_literal(wb, filter, LOG_SWITCHABLE_FILTERS); -} - -static void fix_interp_filter(AV1_COMMON *cm, FRAME_COUNTS *counts) { - if (cm->interp_filter == SWITCHABLE) { - // Check to see if only one of the filters is actually used - int count[SWITCHABLE_FILTERS]; - int i, j, c = 0; - for (i = 0; i < SWITCHABLE_FILTERS; ++i) { - count[i] = 0; - for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j) - count[i] += counts->switchable_interp[j][i]; - c += (count[i] > 0); - } - if (c == 1) { - // Only one filter is used. So set the filter at frame level - for (i = 0; i < SWITCHABLE_FILTERS; ++i) { - if (count[i]) { - if (i == EIGHTTAP_REGULAR) cm->interp_filter = i; - break; - } - } - } - } -} - -// Same function as write_uniform but writing to uncompresses header wb -static void wb_write_uniform(struct aom_write_bit_buffer *wb, int n, int v) { - const int l = get_unsigned_bits(n); - const int m = (1 << l) - n; - if (l == 0) return; - if (v < m) { - aom_wb_write_literal(wb, v, l - 1); - } else { - aom_wb_write_literal(wb, m + ((v - m) >> 1), l - 1); - aom_wb_write_literal(wb, (v - m) & 1, 1); - } -} - -static void write_tile_info_max_tile(const AV1_COMMON *const cm, - struct aom_write_bit_buffer *wb) { - int width_mi = ALIGN_POWER_OF_TWO(cm->mi_cols, cm->seq_params.mib_size_log2); - int height_mi = ALIGN_POWER_OF_TWO(cm->mi_rows, cm->seq_params.mib_size_log2); - int width_sb = width_mi >> cm->seq_params.mib_size_log2; - int height_sb = height_mi >> cm->seq_params.mib_size_log2; - int size_sb, i; - - aom_wb_write_bit(wb, cm->uniform_tile_spacing_flag); - - if (cm->uniform_tile_spacing_flag) { - // Uniform spaced tiles with power-of-two number of rows and columns - // tile columns - int ones = cm->log2_tile_cols - cm->min_log2_tile_cols; - while (ones--) { - aom_wb_write_bit(wb, 1); - } - if (cm->log2_tile_cols < cm->max_log2_tile_cols) { - aom_wb_write_bit(wb, 0); - } - - // rows - ones = cm->log2_tile_rows - cm->min_log2_tile_rows; - while (ones--) { - aom_wb_write_bit(wb, 1); - } - if (cm->log2_tile_rows < cm->max_log2_tile_rows) { - aom_wb_write_bit(wb, 0); - } - } else { - // Explicit tiles with configurable tile widths and heights - // columns - for (i = 0; i < cm->tile_cols; i++) { - size_sb = cm->tile_col_start_sb[i + 1] - cm->tile_col_start_sb[i]; - wb_write_uniform(wb, AOMMIN(width_sb, cm->max_tile_width_sb), - size_sb - 1); - width_sb -= size_sb; - } - assert(width_sb == 0); - - // rows - for (i = 0; i < cm->tile_rows; i++) { - size_sb = cm->tile_row_start_sb[i + 1] - cm->tile_row_start_sb[i]; - wb_write_uniform(wb, AOMMIN(height_sb, cm->max_tile_height_sb), - size_sb - 1); - height_sb -= size_sb; - } - assert(height_sb == 0); - } -} - -static void write_tile_info(const AV1_COMMON *const cm, - struct aom_write_bit_buffer *saved_wb, - struct aom_write_bit_buffer *wb) { - write_tile_info_max_tile(cm, wb); - - *saved_wb = *wb; - if (cm->tile_rows * cm->tile_cols > 1) { - // tile id used for cdf update - aom_wb_write_literal(wb, 0, cm->log2_tile_cols + cm->log2_tile_rows); - // Number of bytes in tile size - 1 - aom_wb_write_literal(wb, 3, 2); - } -} - -static void write_ext_tile_info(const AV1_COMMON *const cm, - struct aom_write_bit_buffer *saved_wb, - struct aom_write_bit_buffer *wb) { - // This information is stored as a separate byte. - int mod = wb->bit_offset % CHAR_BIT; - if (mod > 0) aom_wb_write_literal(wb, 0, CHAR_BIT - mod); - assert(aom_wb_is_byte_aligned(wb)); - - *saved_wb = *wb; - if (cm->tile_rows * cm->tile_cols > 1) { - // Note that the last item in the uncompressed header is the data - // describing tile configuration. - // Number of bytes in tile column size - 1 - aom_wb_write_literal(wb, 0, 2); - // Number of bytes in tile size - 1 - aom_wb_write_literal(wb, 0, 2); - } -} - -static int get_refresh_mask(AV1_COMP *cpi) { - if ((cpi->common.frame_type == KEY_FRAME && cpi->common.show_frame) || - frame_is_sframe(&cpi->common)) - return 0xFF; - - int refresh_mask = 0; - - // NOTE(zoeliu): When LAST_FRAME is to get refreshed, the decoder will be - // notified to get LAST3_FRAME refreshed and then the virtual indexes for all - // the 3 LAST reference frames will be updated accordingly, i.e.: - // (1) The original virtual index for LAST3_FRAME will become the new virtual - // index for LAST_FRAME; and - // (2) The original virtual indexes for LAST_FRAME and LAST2_FRAME will be - // shifted and become the new virtual indexes for LAST2_FRAME and - // LAST3_FRAME. - refresh_mask |= - (cpi->refresh_last_frame << cpi->ref_fb_idx[LAST_REF_FRAMES - 1]); -#if USE_SYMM_MULTI_LAYER - refresh_mask |= - (cpi->new_bwdref_update_rule == 1) - ? (cpi->refresh_bwd_ref_frame << cpi->ref_fb_idx[EXTREF_FRAME - 1]) - : (cpi->refresh_bwd_ref_frame << cpi->ref_fb_idx[BWDREF_FRAME - 1]); -#else - refresh_mask |= - (cpi->refresh_bwd_ref_frame << cpi->ref_fb_idx[BWDREF_FRAME - 1]); -#endif - refresh_mask |= - (cpi->refresh_alt2_ref_frame << cpi->ref_fb_idx[ALTREF2_FRAME - 1]); - - if (av1_preserve_existing_gf(cpi)) { - // We have decided to preserve the previously existing golden frame as our - // new ARF frame. However, in the short term we leave it in the GF slot and, - // if we're updating the GF with the current decoded frame, we save it - // instead to the ARF slot. - // Later, in the function av1_encoder.c:av1_update_reference_frames() we - // will swap gld_fb_idx and alt_fb_idx to achieve our objective. We do it - // there so that it can be done outside of the recode loop. - // Note: This is highly specific to the use of ARF as a forward reference, - // and this needs to be generalized as other uses are implemented - // (like RTC/temporal scalability). - - if (cpi->preserve_arf_as_gld) { - return refresh_mask; - } else { - return refresh_mask | - (cpi->refresh_golden_frame << cpi->ref_fb_idx[ALTREF_FRAME - 1]); - } - } else { - const int arf_idx = cpi->ref_fb_idx[ALTREF_FRAME - 1]; - return refresh_mask | - (cpi->refresh_golden_frame << cpi->ref_fb_idx[GOLDEN_FRAME - 1]) | - (cpi->refresh_alt_ref_frame << arf_idx); - } -} - -static INLINE int find_identical_tile( - const int tile_row, const int tile_col, - TileBufferEnc (*const tile_buffers)[MAX_TILE_COLS]) { - const MV32 candidate_offset[1] = { { 1, 0 } }; - const uint8_t *const cur_tile_data = - tile_buffers[tile_row][tile_col].data + 4; - const size_t cur_tile_size = tile_buffers[tile_row][tile_col].size; - - int i; - - if (tile_row == 0) return 0; - - // (TODO: yunqingwang) For now, only above tile is checked and used. - // More candidates such as left tile can be added later. - for (i = 0; i < 1; i++) { - int row_offset = candidate_offset[0].row; - int col_offset = candidate_offset[0].col; - int row = tile_row - row_offset; - int col = tile_col - col_offset; - uint8_t tile_hdr; - const uint8_t *tile_data; - TileBufferEnc *candidate; - - if (row < 0 || col < 0) continue; - - tile_hdr = *(tile_buffers[row][col].data); - - // Read out tcm bit - if ((tile_hdr >> 7) == 1) { - // The candidate is a copy tile itself - row_offset += tile_hdr & 0x7f; - row = tile_row - row_offset; - } - - candidate = &tile_buffers[row][col]; - - if (row_offset >= 128 || candidate->size != cur_tile_size) continue; - - tile_data = candidate->data + 4; - - if (memcmp(tile_data, cur_tile_data, cur_tile_size) != 0) continue; - - // Identical tile found - assert(row_offset > 0); - return row_offset; - } - - // No identical tile found - return 0; -} - -static void write_render_size(const AV1_COMMON *cm, - struct aom_write_bit_buffer *wb) { - const int scaling_active = av1_resize_scaled(cm); - aom_wb_write_bit(wb, scaling_active); - if (scaling_active) { - aom_wb_write_literal(wb, cm->render_width - 1, 16); - aom_wb_write_literal(wb, cm->render_height - 1, 16); - } -} - -static void write_superres_scale(const AV1_COMMON *const cm, - struct aom_write_bit_buffer *wb) { - const SequenceHeader *const seq_params = &cm->seq_params; - if (!seq_params->enable_superres) { - assert(cm->superres_scale_denominator == SCALE_NUMERATOR); - return; - } - - // First bit is whether to to scale or not - if (cm->superres_scale_denominator == SCALE_NUMERATOR) { - aom_wb_write_bit(wb, 0); // no scaling - } else { - aom_wb_write_bit(wb, 1); // scaling, write scale factor - assert(cm->superres_scale_denominator >= SUPERRES_SCALE_DENOMINATOR_MIN); - assert(cm->superres_scale_denominator < - SUPERRES_SCALE_DENOMINATOR_MIN + (1 << SUPERRES_SCALE_BITS)); - aom_wb_write_literal( - wb, cm->superres_scale_denominator - SUPERRES_SCALE_DENOMINATOR_MIN, - SUPERRES_SCALE_BITS); - } -} - -static void write_frame_size(const AV1_COMMON *cm, int frame_size_override, - struct aom_write_bit_buffer *wb) { - const int coded_width = cm->superres_upscaled_width - 1; - const int coded_height = cm->superres_upscaled_height - 1; - - if (frame_size_override) { - const SequenceHeader *seq_params = &cm->seq_params; - int num_bits_width = seq_params->num_bits_width; - int num_bits_height = seq_params->num_bits_height; - aom_wb_write_literal(wb, coded_width, num_bits_width); - aom_wb_write_literal(wb, coded_height, num_bits_height); - } - - write_superres_scale(cm, wb); - write_render_size(cm, wb); -} - -static void write_frame_size_with_refs(AV1_COMP *cpi, - struct aom_write_bit_buffer *wb) { - AV1_COMMON *const cm = &cpi->common; - int found = 0; - - MV_REFERENCE_FRAME ref_frame; - for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) { - YV12_BUFFER_CONFIG *cfg = get_ref_frame_buffer(cpi, ref_frame); - - if (cfg != NULL) { - found = cm->superres_upscaled_width == cfg->y_crop_width && - cm->superres_upscaled_height == cfg->y_crop_height; - found &= cm->render_width == cfg->render_width && - cm->render_height == cfg->render_height; - } - aom_wb_write_bit(wb, found); - if (found) { - write_superres_scale(cm, wb); - break; - } - } - - if (!found) { - int frame_size_override = 1; // Always equal to 1 in this function - write_frame_size(cm, frame_size_override, wb); - } -} - -static void write_profile(BITSTREAM_PROFILE profile, - struct aom_write_bit_buffer *wb) { - assert(profile >= PROFILE_0 && profile < MAX_PROFILES); - aom_wb_write_literal(wb, profile, PROFILE_BITS); -} - -static void write_bitdepth(const SequenceHeader *const seq_params, - struct aom_write_bit_buffer *wb) { - // Profile 0/1: [0] for 8 bit, [1] 10-bit - // Profile 2: [0] for 8 bit, [10] 10-bit, [11] - 12-bit - aom_wb_write_bit(wb, seq_params->bit_depth == AOM_BITS_8 ? 0 : 1); - if (seq_params->profile == PROFILE_2 && seq_params->bit_depth != AOM_BITS_8) { - aom_wb_write_bit(wb, seq_params->bit_depth == AOM_BITS_10 ? 0 : 1); - } -} - -static void write_color_config(const SequenceHeader *const seq_params, - struct aom_write_bit_buffer *wb) { - write_bitdepth(seq_params, wb); - const int is_monochrome = seq_params->monochrome; - // monochrome bit - if (seq_params->profile != PROFILE_1) - aom_wb_write_bit(wb, is_monochrome); - else - assert(!is_monochrome); - if (seq_params->color_primaries == AOM_CICP_CP_UNSPECIFIED && - seq_params->transfer_characteristics == AOM_CICP_TC_UNSPECIFIED && - seq_params->matrix_coefficients == AOM_CICP_MC_UNSPECIFIED) { - aom_wb_write_bit(wb, 0); // No color description present - } else { - aom_wb_write_bit(wb, 1); // Color description present - aom_wb_write_literal(wb, seq_params->color_primaries, 8); - aom_wb_write_literal(wb, seq_params->transfer_characteristics, 8); - aom_wb_write_literal(wb, seq_params->matrix_coefficients, 8); - } - if (is_monochrome) { - // 0: [16, 235] (i.e. xvYCC), 1: [0, 255] - aom_wb_write_bit(wb, seq_params->color_range); - return; - } - if (seq_params->color_primaries == AOM_CICP_CP_BT_709 && - seq_params->transfer_characteristics == AOM_CICP_TC_SRGB && - seq_params->matrix_coefficients == - AOM_CICP_MC_IDENTITY) { // it would be better to remove this - // dependency too - assert(seq_params->subsampling_x == 0 && seq_params->subsampling_y == 0); - assert(seq_params->profile == PROFILE_1 || - (seq_params->profile == PROFILE_2 && - seq_params->bit_depth == AOM_BITS_12)); - } else { - // 0: [16, 235] (i.e. xvYCC), 1: [0, 255] - aom_wb_write_bit(wb, seq_params->color_range); - if (seq_params->profile == PROFILE_0) { - // 420 only - assert(seq_params->subsampling_x == 1 && seq_params->subsampling_y == 1); - } else if (seq_params->profile == PROFILE_1) { - // 444 only - assert(seq_params->subsampling_x == 0 && seq_params->subsampling_y == 0); - } else if (seq_params->profile == PROFILE_2) { - if (seq_params->bit_depth == AOM_BITS_12) { - // 420, 444 or 422 - aom_wb_write_bit(wb, seq_params->subsampling_x); - if (seq_params->subsampling_x == 0) { - assert(seq_params->subsampling_y == 0 && - "4:4:0 subsampling not allowed in AV1"); - } else { - aom_wb_write_bit(wb, seq_params->subsampling_y); - } - } else { - // 422 only - assert(seq_params->subsampling_x == 1 && - seq_params->subsampling_y == 0); - } - } - if (seq_params->matrix_coefficients == AOM_CICP_MC_IDENTITY) { - assert(seq_params->subsampling_x == 0 && seq_params->subsampling_y == 0); - } - if (seq_params->subsampling_x == 1 && seq_params->subsampling_y == 1) { - aom_wb_write_literal(wb, seq_params->chroma_sample_position, 2); - } - } - aom_wb_write_bit(wb, seq_params->separate_uv_delta_q); -} - -static void write_timing_info_header(AV1_COMMON *const cm, - struct aom_write_bit_buffer *wb) { - aom_wb_write_unsigned_literal(wb, cm->timing_info.num_units_in_display_tick, - 32); // Number of units in tick - aom_wb_write_unsigned_literal(wb, cm->timing_info.time_scale, - 32); // Time scale - aom_wb_write_bit( - wb, - cm->timing_info.equal_picture_interval); // Equal picture interval bit - if (cm->timing_info.equal_picture_interval) { - aom_wb_write_uvlc( - wb, - cm->timing_info.num_ticks_per_picture - 1); // ticks per picture - } -} - -static void write_decoder_model_info(AV1_COMMON *const cm, - struct aom_write_bit_buffer *wb) { - aom_wb_write_literal( - wb, cm->buffer_model.encoder_decoder_buffer_delay_length - 1, 5); - aom_wb_write_unsigned_literal(wb, cm->buffer_model.num_units_in_decoding_tick, - 32); // Number of units in decoding tick - aom_wb_write_literal(wb, cm->buffer_model.buffer_removal_time_length - 1, 5); - aom_wb_write_literal(wb, cm->buffer_model.frame_presentation_time_length - 1, - 5); -} - -static void write_dec_model_op_parameters(AV1_COMMON *const cm, - struct aom_write_bit_buffer *wb, - int op_num) { - if (op_num > MAX_NUM_OPERATING_POINTS) - aom_internal_error( - &cm->error, AOM_CODEC_UNSUP_BITSTREAM, - "Encoder does not support %d decoder model operating points", op_num); - - // aom_wb_write_bit(wb, cm->op_params[op_num].has_parameters); - // if (!cm->op_params[op_num].has_parameters) return; - - aom_wb_write_unsigned_literal( - wb, cm->op_params[op_num].decoder_buffer_delay, - cm->buffer_model.encoder_decoder_buffer_delay_length); - - aom_wb_write_unsigned_literal( - wb, cm->op_params[op_num].encoder_buffer_delay, - cm->buffer_model.encoder_decoder_buffer_delay_length); - - aom_wb_write_bit(wb, cm->op_params[op_num].low_delay_mode_flag); - - cm->op_frame_timing[op_num].buffer_removal_time = - 0; // reset the decoded frame counter -} - -static void write_tu_pts_info(AV1_COMMON *const cm, - struct aom_write_bit_buffer *wb) { - aom_wb_write_unsigned_literal( - wb, cm->frame_presentation_time, - cm->buffer_model.frame_presentation_time_length); -} - -static void write_film_grain_params(AV1_COMP *cpi, - struct aom_write_bit_buffer *wb) { - AV1_COMMON *const cm = &cpi->common; - aom_film_grain_t *pars = &cm->film_grain_params; - - cm->cur_frame->film_grain_params = *pars; - - aom_wb_write_bit(wb, pars->apply_grain); - if (!pars->apply_grain) return; - - aom_wb_write_literal(wb, pars->random_seed, 16); - - pars->random_seed += 3381; // Changing random seed for film grain - if (!pars->random_seed) // Random seed should not be zero - pars->random_seed += 7391; - if (cm->frame_type == INTER_FRAME) - aom_wb_write_bit(wb, pars->update_parameters); - else - pars->update_parameters = 1; - if (!pars->update_parameters) { - RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs; - int ref_frame, ref_idx, buf_idx; - for (ref_frame = LAST_FRAME; ref_frame < REF_FRAMES; ref_frame++) { - ref_idx = get_ref_frame_map_idx(cpi, ref_frame); - assert(ref_idx != INVALID_IDX); - buf_idx = cm->ref_frame_map[ref_idx]; - if (frame_bufs[buf_idx].film_grain_params_present && - memcmp(pars, &frame_bufs[buf_idx].film_grain_params, sizeof(*pars))) { - break; - } - } - assert(ref_frame < REF_FRAMES); - aom_wb_write_literal(wb, ref_idx, 3); - return; - } - - // Scaling functions parameters - aom_wb_write_literal(wb, pars->num_y_points, 4); // max 14 - for (int i = 0; i < pars->num_y_points; i++) { - aom_wb_write_literal(wb, pars->scaling_points_y[i][0], 8); - aom_wb_write_literal(wb, pars->scaling_points_y[i][1], 8); - } - - if (!cm->seq_params.monochrome) - aom_wb_write_bit(wb, pars->chroma_scaling_from_luma); - else - pars->chroma_scaling_from_luma = 0; // for monochrome override to 0 - - if (cm->seq_params.monochrome || pars->chroma_scaling_from_luma || - ((cm->seq_params.subsampling_x == 1) && - (cm->seq_params.subsampling_y == 1) && (pars->num_y_points == 0))) { - pars->num_cb_points = 0; - pars->num_cr_points = 0; - } else { - aom_wb_write_literal(wb, pars->num_cb_points, 4); // max 10 - for (int i = 0; i < pars->num_cb_points; i++) { - aom_wb_write_literal(wb, pars->scaling_points_cb[i][0], 8); - aom_wb_write_literal(wb, pars->scaling_points_cb[i][1], 8); - } - - aom_wb_write_literal(wb, pars->num_cr_points, 4); // max 10 - for (int i = 0; i < pars->num_cr_points; i++) { - aom_wb_write_literal(wb, pars->scaling_points_cr[i][0], 8); - aom_wb_write_literal(wb, pars->scaling_points_cr[i][1], 8); - } - } - - aom_wb_write_literal(wb, pars->scaling_shift - 8, 2); // 8 + value - - // AR coefficients - // Only sent if the corresponsing scaling function has - // more than 0 points - - aom_wb_write_literal(wb, pars->ar_coeff_lag, 2); - - int num_pos_luma = 2 * pars->ar_coeff_lag * (pars->ar_coeff_lag + 1); - int num_pos_chroma = num_pos_luma; - if (pars->num_y_points > 0) ++num_pos_chroma; - - if (pars->num_y_points) - for (int i = 0; i < num_pos_luma; i++) - aom_wb_write_literal(wb, pars->ar_coeffs_y[i] + 128, 8); - - if (pars->num_cb_points || pars->chroma_scaling_from_luma) - for (int i = 0; i < num_pos_chroma; i++) - aom_wb_write_literal(wb, pars->ar_coeffs_cb[i] + 128, 8); - - if (pars->num_cr_points || pars->chroma_scaling_from_luma) - for (int i = 0; i < num_pos_chroma; i++) - aom_wb_write_literal(wb, pars->ar_coeffs_cr[i] + 128, 8); - - aom_wb_write_literal(wb, pars->ar_coeff_shift - 6, 2); // 8 + value - - aom_wb_write_literal(wb, pars->grain_scale_shift, 2); - - if (pars->num_cb_points) { - aom_wb_write_literal(wb, pars->cb_mult, 8); - aom_wb_write_literal(wb, pars->cb_luma_mult, 8); - aom_wb_write_literal(wb, pars->cb_offset, 9); - } - - if (pars->num_cr_points) { - aom_wb_write_literal(wb, pars->cr_mult, 8); - aom_wb_write_literal(wb, pars->cr_luma_mult, 8); - aom_wb_write_literal(wb, pars->cr_offset, 9); - } - - aom_wb_write_bit(wb, pars->overlap_flag); - - aom_wb_write_bit(wb, pars->clip_to_restricted_range); -} - -static void write_sb_size(SequenceHeader *seq_params, - struct aom_write_bit_buffer *wb) { - (void)seq_params; - (void)wb; - assert(seq_params->mib_size == mi_size_wide[seq_params->sb_size]); - assert(seq_params->mib_size == 1 << seq_params->mib_size_log2); - assert(seq_params->sb_size == BLOCK_128X128 || - seq_params->sb_size == BLOCK_64X64); - aom_wb_write_bit(wb, seq_params->sb_size == BLOCK_128X128 ? 1 : 0); -} - -static void write_sequence_header(AV1_COMP *cpi, - struct aom_write_bit_buffer *wb) { - AV1_COMMON *const cm = &cpi->common; - SequenceHeader *seq_params = &cm->seq_params; - - int max_frame_width = cpi->oxcf.forced_max_frame_width - ? cpi->oxcf.forced_max_frame_width - : cpi->oxcf.width; - int max_frame_height = cpi->oxcf.forced_max_frame_height - ? cpi->oxcf.forced_max_frame_height - : cpi->oxcf.height; - // max((int)ceil(log2(max_frame_width)), 1) - const int num_bits_width = - (max_frame_width > 1) ? get_msb(max_frame_width - 1) + 1 : 1; - // max((int)ceil(log2(max_frame_height)), 1) - const int num_bits_height = - (max_frame_height > 1) ? get_msb(max_frame_height - 1) + 1 : 1; - assert(num_bits_width <= 16); - assert(num_bits_height <= 16); - - seq_params->num_bits_width = num_bits_width; - seq_params->num_bits_height = num_bits_height; - seq_params->max_frame_width = max_frame_width; - seq_params->max_frame_height = max_frame_height; - - aom_wb_write_literal(wb, num_bits_width - 1, 4); - aom_wb_write_literal(wb, num_bits_height - 1, 4); - aom_wb_write_literal(wb, max_frame_width - 1, num_bits_width); - aom_wb_write_literal(wb, max_frame_height - 1, num_bits_height); - - /* Placeholder for actually writing to the bitstream */ - if (!seq_params->reduced_still_picture_hdr) { - seq_params->frame_id_numbers_present_flag = - cm->large_scale_tile ? 0 : cm->error_resilient_mode; - seq_params->frame_id_length = FRAME_ID_LENGTH; - seq_params->delta_frame_id_length = DELTA_FRAME_ID_LENGTH; - - aom_wb_write_bit(wb, seq_params->frame_id_numbers_present_flag); - if (seq_params->frame_id_numbers_present_flag) { - // We must always have delta_frame_id_length < frame_id_length, - // in order for a frame to be referenced with a unique delta. - // Avoid wasting bits by using a coding that enforces this restriction. - aom_wb_write_literal(wb, seq_params->delta_frame_id_length - 2, 4); - aom_wb_write_literal( - wb, - seq_params->frame_id_length - seq_params->delta_frame_id_length - 1, - 3); - } - } - - write_sb_size(seq_params, wb); - - aom_wb_write_bit(wb, seq_params->enable_filter_intra); - aom_wb_write_bit(wb, seq_params->enable_intra_edge_filter); - - if (!seq_params->reduced_still_picture_hdr) { - aom_wb_write_bit(wb, seq_params->enable_interintra_compound); - aom_wb_write_bit(wb, seq_params->enable_masked_compound); - aom_wb_write_bit(wb, seq_params->enable_warped_motion); - aom_wb_write_bit(wb, seq_params->enable_dual_filter); - - aom_wb_write_bit(wb, seq_params->enable_order_hint); - - if (seq_params->enable_order_hint) { - aom_wb_write_bit(wb, seq_params->enable_jnt_comp); - aom_wb_write_bit(wb, seq_params->enable_ref_frame_mvs); - } - if (seq_params->force_screen_content_tools == 2) { - aom_wb_write_bit(wb, 1); - } else { - aom_wb_write_bit(wb, 0); - aom_wb_write_bit(wb, seq_params->force_screen_content_tools); - } - if (seq_params->force_screen_content_tools > 0) { - if (seq_params->force_integer_mv == 2) { - aom_wb_write_bit(wb, 1); - } else { - aom_wb_write_bit(wb, 0); - aom_wb_write_bit(wb, seq_params->force_integer_mv); - } - } else { - assert(seq_params->force_integer_mv == 2); - } - if (seq_params->enable_order_hint) - aom_wb_write_literal(wb, seq_params->order_hint_bits_minus_1, 3); - } - - aom_wb_write_bit(wb, seq_params->enable_superres); - aom_wb_write_bit(wb, seq_params->enable_cdef); - aom_wb_write_bit(wb, seq_params->enable_restoration); -} - -static void write_global_motion_params(const WarpedMotionParams *params, - const WarpedMotionParams *ref_params, - struct aom_write_bit_buffer *wb, - int allow_hp) { - const TransformationType type = params->wmtype; - - aom_wb_write_bit(wb, type != IDENTITY); - if (type != IDENTITY) { - aom_wb_write_bit(wb, type == ROTZOOM); - if (type != ROTZOOM) aom_wb_write_bit(wb, type == TRANSLATION); - } - - if (type >= ROTZOOM) { - aom_wb_write_signed_primitive_refsubexpfin( - wb, GM_ALPHA_MAX + 1, SUBEXPFIN_K, - (ref_params->wmmat[2] >> GM_ALPHA_PREC_DIFF) - - (1 << GM_ALPHA_PREC_BITS), - (params->wmmat[2] >> GM_ALPHA_PREC_DIFF) - (1 << GM_ALPHA_PREC_BITS)); - aom_wb_write_signed_primitive_refsubexpfin( - wb, GM_ALPHA_MAX + 1, SUBEXPFIN_K, - (ref_params->wmmat[3] >> GM_ALPHA_PREC_DIFF), - (params->wmmat[3] >> GM_ALPHA_PREC_DIFF)); - } - - if (type >= AFFINE) { - aom_wb_write_signed_primitive_refsubexpfin( - wb, GM_ALPHA_MAX + 1, SUBEXPFIN_K, - (ref_params->wmmat[4] >> GM_ALPHA_PREC_DIFF), - (params->wmmat[4] >> GM_ALPHA_PREC_DIFF)); - aom_wb_write_signed_primitive_refsubexpfin( - wb, GM_ALPHA_MAX + 1, SUBEXPFIN_K, - (ref_params->wmmat[5] >> GM_ALPHA_PREC_DIFF) - - (1 << GM_ALPHA_PREC_BITS), - (params->wmmat[5] >> GM_ALPHA_PREC_DIFF) - (1 << GM_ALPHA_PREC_BITS)); - } - - if (type >= TRANSLATION) { - const int trans_bits = (type == TRANSLATION) - ? GM_ABS_TRANS_ONLY_BITS - !allow_hp - : GM_ABS_TRANS_BITS; - const int trans_prec_diff = (type == TRANSLATION) - ? GM_TRANS_ONLY_PREC_DIFF + !allow_hp - : GM_TRANS_PREC_DIFF; - aom_wb_write_signed_primitive_refsubexpfin( - wb, (1 << trans_bits) + 1, SUBEXPFIN_K, - (ref_params->wmmat[0] >> trans_prec_diff), - (params->wmmat[0] >> trans_prec_diff)); - aom_wb_write_signed_primitive_refsubexpfin( - wb, (1 << trans_bits) + 1, SUBEXPFIN_K, - (ref_params->wmmat[1] >> trans_prec_diff), - (params->wmmat[1] >> trans_prec_diff)); - } -} - -static void write_global_motion(AV1_COMP *cpi, - struct aom_write_bit_buffer *wb) { - AV1_COMMON *const cm = &cpi->common; - int frame; - for (frame = LAST_FRAME; frame <= ALTREF_FRAME; ++frame) { - const WarpedMotionParams *ref_params = - cm->prev_frame ? &cm->prev_frame->global_motion[frame] - : &default_warp_params; - write_global_motion_params(&cm->global_motion[frame], ref_params, wb, - cm->allow_high_precision_mv); - // TODO(sarahparker, debargha): The logic in the commented out code below - // does not work currently and causes mismatches when resize is on. - // Fix it before turning the optimization back on. - /* - YV12_BUFFER_CONFIG *ref_buf = get_ref_frame_buffer(cpi, frame); - if (cpi->source->y_crop_width == ref_buf->y_crop_width && - cpi->source->y_crop_height == ref_buf->y_crop_height) { - write_global_motion_params(&cm->global_motion[frame], - &cm->prev_frame->global_motion[frame], wb, - cm->allow_high_precision_mv); - } else { - assert(cm->global_motion[frame].wmtype == IDENTITY && - "Invalid warp type for frames of different resolutions"); - } - */ - /* - printf("Frame %d/%d: Enc Ref %d: %d %d %d %d\n", - cm->current_video_frame, cm->show_frame, frame, - cm->global_motion[frame].wmmat[0], - cm->global_motion[frame].wmmat[1], cm->global_motion[frame].wmmat[2], - cm->global_motion[frame].wmmat[3]); - */ - } -} - -static void check_frame_refs_short_signaling(AV1_COMP *const cpi) { - AV1_COMMON *const cm = &cpi->common; - if (!cm->frame_refs_short_signaling) return; - - // Check whether all references are distinct frames. - int buf_markers[FRAME_BUFFERS] = { 0 }; - for (int ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) { - const int buf_idx = get_ref_frame_buf_idx(cpi, ref_frame); - if (buf_idx != INVALID_IDX) { - assert(buf_idx >= 0 && buf_idx < FRAME_BUFFERS); - buf_markers[buf_idx] = 1; - } - } - - int num_refs = 0; - for (int buf_idx = 0; buf_idx < FRAME_BUFFERS; ++buf_idx) { - num_refs += buf_markers[buf_idx]; - } - - // We only turn on frame_refs_short_signaling when all references are - // distinct. - if (num_refs < INTER_REFS_PER_FRAME) { - // It indicates that there exist more than one reference frame pointing to - // the same reference buffer, i.e. two or more references are duplicate. - cm->frame_refs_short_signaling = 0; - return; - } - - // Check whether the encoder side ref frame choices are aligned with that to - // be derived at the decoder side. - RefBuffer frame_refs_copy[INTER_REFS_PER_FRAME]; - - // Backup the frame refs info - memcpy(frame_refs_copy, cm->frame_refs, - INTER_REFS_PER_FRAME * sizeof(RefBuffer)); - - const int lst_map_idx = get_ref_frame_map_idx(cpi, LAST_FRAME); - const int gld_map_idx = get_ref_frame_map_idx(cpi, GOLDEN_FRAME); - - // Set up the frame refs mapping indexes according to the - // frame_refs_short_signaling policy. - av1_set_frame_refs(cm, lst_map_idx, gld_map_idx); - - // We only turn on frame_refs_short_signaling when the encoder side decision - // on ref frames is identical to that at the decoder side. - for (int ref_idx = 0; ref_idx < INTER_REFS_PER_FRAME; ++ref_idx) { - // Compare the buffer index between two reference frames indexed - // respectively by the encoder and the decoder side decisions. - if (cm->frame_refs[ref_idx].idx != frame_refs_copy[ref_idx].idx) { - cm->frame_refs_short_signaling = 0; - break; - } - } - -#if 0 // For debug - printf("\nFrame=%d: \n", cm->current_video_frame); - printf("***frame_refs_short_signaling=%d\n", cm->frame_refs_short_signaling); - for (int ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) { - printf("enc_ref(map_idx=%d, buf_idx=%d)=%d, vs. " - "dec_ref(map_idx=%d, buf_idx=%d)=%d\n", - get_ref_frame_map_idx(cpi, ref_frame), - get_ref_frame_buf_idx(cpi, ref_frame), ref_frame, - cm->frame_refs[ref_frame - LAST_FRAME].map_idx, - cm->frame_refs[ref_frame - LAST_FRAME].idx, ref_frame); - } -#endif // 0 - - // Restore the frame refs info if frame_refs_short_signaling is off. - if (!cm->frame_refs_short_signaling) - memcpy(cm->frame_refs, frame_refs_copy, - INTER_REFS_PER_FRAME * sizeof(RefBuffer)); -} - -// New function based on HLS R18 -static void write_uncompressed_header_obu(AV1_COMP *cpi, - struct aom_write_bit_buffer *saved_wb, - struct aom_write_bit_buffer *wb) { - AV1_COMMON *const cm = &cpi->common; - const SequenceHeader *const seq_params = &cm->seq_params; - MACROBLOCKD *const xd = &cpi->td.mb.e_mbd; - - // NOTE: By default all coded frames to be used as a reference - cm->is_reference_frame = 1; - cm->frame_type = cm->intra_only ? INTRA_ONLY_FRAME : cm->frame_type; - - if (seq_params->still_picture) { - assert(cm->show_existing_frame == 0); - assert(cm->show_frame == 1); - assert(cm->frame_type == KEY_FRAME); - } - if (!seq_params->reduced_still_picture_hdr) { - if (encode_show_existing_frame(cm)) { - RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs; - const int frame_to_show = cm->ref_frame_map[cpi->existing_fb_idx_to_show]; - - if (frame_to_show < 0 || frame_bufs[frame_to_show].ref_count < 1) { - aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM, - "Buffer %d does not contain a reconstructed frame", - frame_to_show); - } - ref_cnt_fb(frame_bufs, &cm->new_fb_idx, frame_to_show); - - aom_wb_write_bit(wb, 1); // show_existing_frame - aom_wb_write_literal(wb, cpi->existing_fb_idx_to_show, 3); - - if (seq_params->decoder_model_info_present_flag && - cm->timing_info.equal_picture_interval == 0) { - write_tu_pts_info(cm, wb); - } - if (seq_params->frame_id_numbers_present_flag) { - int frame_id_len = seq_params->frame_id_length; - int display_frame_id = cm->ref_frame_id[cpi->existing_fb_idx_to_show]; - aom_wb_write_literal(wb, display_frame_id, frame_id_len); - } - - if (cm->reset_decoder_state && - frame_bufs[frame_to_show].frame_type != KEY_FRAME) { - aom_internal_error( - &cm->error, AOM_CODEC_UNSUP_BITSTREAM, - "show_existing_frame to reset state on KEY_FRAME only"); - } - - return; - } else { - aom_wb_write_bit(wb, 0); // show_existing_frame - } - - aom_wb_write_literal(wb, cm->frame_type, 2); - - aom_wb_write_bit(wb, cm->show_frame); - if (cm->show_frame) { - if (seq_params->decoder_model_info_present_flag && - cm->timing_info.equal_picture_interval == 0) - write_tu_pts_info(cm, wb); - } else { - aom_wb_write_bit(wb, cm->showable_frame); - } - if (frame_is_sframe(cm)) { - assert(cm->error_resilient_mode); - } else if (!(cm->frame_type == KEY_FRAME && cm->show_frame)) { - aom_wb_write_bit(wb, cm->error_resilient_mode); - } - } - aom_wb_write_bit(wb, cm->disable_cdf_update); - - if (seq_params->force_screen_content_tools == 2) { - aom_wb_write_bit(wb, cm->allow_screen_content_tools); - } else { - assert(cm->allow_screen_content_tools == - seq_params->force_screen_content_tools); - } - - if (cm->allow_screen_content_tools) { - if (seq_params->force_integer_mv == 2) { - aom_wb_write_bit(wb, cm->cur_frame_force_integer_mv); - } else { - assert(cm->cur_frame_force_integer_mv == seq_params->force_integer_mv); - } - } else { - assert(cm->cur_frame_force_integer_mv == 0); - } - - cm->invalid_delta_frame_id_minus_1 = 0; - int frame_size_override_flag = 0; - cm->frame_refs_short_signaling = 0; - - if (seq_params->reduced_still_picture_hdr) { - assert(cm->width == seq_params->max_frame_width && - cm->height == seq_params->max_frame_height); - } else { - if (seq_params->frame_id_numbers_present_flag) { - int frame_id_len = seq_params->frame_id_length; - aom_wb_write_literal(wb, cm->current_frame_id, frame_id_len); - } - - if (cm->width > seq_params->max_frame_width || - cm->height > seq_params->max_frame_height) { - aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM, - "Frame dimensions are larger than the maximum values"); - } - - frame_size_override_flag = - frame_is_sframe(cm) ? 1 - : (cm->width != seq_params->max_frame_width || - cm->height != seq_params->max_frame_height); - if (!frame_is_sframe(cm)) aom_wb_write_bit(wb, frame_size_override_flag); - - if (seq_params->enable_order_hint) - aom_wb_write_literal(wb, cm->frame_offset, - seq_params->order_hint_bits_minus_1 + 1); - - if (!cm->error_resilient_mode && !frame_is_intra_only(cm)) { - aom_wb_write_literal(wb, cm->primary_ref_frame, PRIMARY_REF_BITS); - } - } - - if (seq_params->decoder_model_info_present_flag) { - aom_wb_write_bit(wb, cm->buffer_removal_time_present); - if (cm->buffer_removal_time_present) { - for (int op_num = 0; - op_num < seq_params->operating_points_cnt_minus_1 + 1; op_num++) { - if (cm->op_params[op_num].decoder_model_param_present_flag) { - if (((seq_params->operating_point_idc[op_num] >> - cm->temporal_layer_id) & - 0x1 && - (seq_params->operating_point_idc[op_num] >> - (cm->spatial_layer_id + 8)) & - 0x1) || - seq_params->operating_point_idc[op_num] == 0) { - aom_wb_write_unsigned_literal( - wb, cm->op_frame_timing[op_num].buffer_removal_time, - cm->buffer_model.buffer_removal_time_length); - cm->op_frame_timing[op_num].buffer_removal_time++; - if (cm->op_frame_timing[op_num].buffer_removal_time == 0) { - aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM, - "buffer_removal_time overflowed"); - } - } - } - } - } - } - cpi->refresh_frame_mask = get_refresh_mask(cpi); - if (cm->frame_type == KEY_FRAME) { - if (!cm->show_frame) { // unshown keyframe (forward keyframe) - aom_wb_write_literal(wb, cpi->refresh_frame_mask, REF_FRAMES); - } else { - assert(cpi->refresh_frame_mask == 0xFF); - } - } else { - if (cm->frame_type == INTRA_ONLY_FRAME) { - assert(cpi->refresh_frame_mask != 0xFF); - int updated_fb = -1; - for (int i = 0; i < REF_FRAMES; i++) { - // If more than one frame is refreshed, it doesn't matter which one - // we pick, so pick the first. - if (cpi->refresh_frame_mask & (1 << i)) { - updated_fb = i; - break; - } - } - assert(updated_fb >= 0); - cm->fb_of_context_type[cm->frame_context_idx] = updated_fb; - aom_wb_write_literal(wb, cpi->refresh_frame_mask, REF_FRAMES); - } else if (cm->frame_type == INTER_FRAME || frame_is_sframe(cm)) { - if (cm->frame_type == INTER_FRAME) { - aom_wb_write_literal(wb, cpi->refresh_frame_mask, REF_FRAMES); - } else { - assert(frame_is_sframe(cm) && cpi->refresh_frame_mask == 0xFF); - } - int updated_fb = -1; - for (int i = 0; i < REF_FRAMES; i++) { - // If more than one frame is refreshed, it doesn't matter which one - // we pick, so pick the first. - if (cpi->refresh_frame_mask & (1 << i)) { - updated_fb = i; - break; - } - } - // large scale tile sometimes won't refresh any fbs - if (updated_fb >= 0) { - cm->fb_of_context_type[cm->frame_context_idx] = updated_fb; - } - - if (!cpi->refresh_frame_mask) { - // NOTE: "cpi->refresh_frame_mask == 0" indicates that the coded frame - // will not be used as a reference - cm->is_reference_frame = 0; - } - } - } - - if (!frame_is_intra_only(cm) || cpi->refresh_frame_mask != 0xFF) { - // Write all ref frame order hints if error_resilient_mode == 1 - if (cm->error_resilient_mode && seq_params->enable_order_hint) { - RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs; - for (int ref_idx = 0; ref_idx < REF_FRAMES; ref_idx++) { - // Get buffer index - const int buf_idx = cm->ref_frame_map[ref_idx]; - assert(buf_idx >= 0 && buf_idx < FRAME_BUFFERS); - - // Write order hint to bit stream - aom_wb_write_literal(wb, frame_bufs[buf_idx].cur_frame_offset, - seq_params->order_hint_bits_minus_1 + 1); - } - } - } - - if (cm->frame_type == KEY_FRAME) { - write_frame_size(cm, frame_size_override_flag, wb); - assert(!av1_superres_scaled(cm) || !cm->allow_intrabc); - if (cm->allow_screen_content_tools && !av1_superres_scaled(cm)) - aom_wb_write_bit(wb, cm->allow_intrabc); - // all eight fbs are refreshed, pick one that will live long enough - cm->fb_of_context_type[REGULAR_FRAME] = 0; - } else { - if (cm->frame_type == INTRA_ONLY_FRAME) { - write_frame_size(cm, frame_size_override_flag, wb); - assert(!av1_superres_scaled(cm) || !cm->allow_intrabc); - if (cm->allow_screen_content_tools && !av1_superres_scaled(cm)) - aom_wb_write_bit(wb, cm->allow_intrabc); - } else if (cm->frame_type == INTER_FRAME || frame_is_sframe(cm)) { - MV_REFERENCE_FRAME ref_frame; - - // NOTE: Error resilient mode turns off frame_refs_short_signaling - // automatically. -#define FRAME_REFS_SHORT_SIGNALING 0 -#if FRAME_REFS_SHORT_SIGNALING - cm->frame_refs_short_signaling = seq_params->enable_order_hint; -#endif // FRAME_REFS_SHORT_SIGNALING - - if (cm->frame_refs_short_signaling) { - // NOTE(zoeliu@google.com): - // An example solution for encoder-side implementation on frame refs - // short signaling, which is only turned on when the encoder side - // decision on ref frames is identical to that at the decoder side. - check_frame_refs_short_signaling(cpi); - } - - if (seq_params->enable_order_hint) - aom_wb_write_bit(wb, cm->frame_refs_short_signaling); - - if (cm->frame_refs_short_signaling) { - const int lst_ref = get_ref_frame_map_idx(cpi, LAST_FRAME); - aom_wb_write_literal(wb, lst_ref, REF_FRAMES_LOG2); - - const int gld_ref = get_ref_frame_map_idx(cpi, GOLDEN_FRAME); - aom_wb_write_literal(wb, gld_ref, REF_FRAMES_LOG2); - } - - for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) { - assert(get_ref_frame_map_idx(cpi, ref_frame) != INVALID_IDX); - if (!cm->frame_refs_short_signaling) - aom_wb_write_literal(wb, get_ref_frame_map_idx(cpi, ref_frame), - REF_FRAMES_LOG2); - if (seq_params->frame_id_numbers_present_flag) { - int i = get_ref_frame_map_idx(cpi, ref_frame); - int frame_id_len = seq_params->frame_id_length; - int diff_len = seq_params->delta_frame_id_length; - int delta_frame_id_minus_1 = - ((cm->current_frame_id - cm->ref_frame_id[i] + - (1 << frame_id_len)) % - (1 << frame_id_len)) - - 1; - if (delta_frame_id_minus_1 < 0 || - delta_frame_id_minus_1 >= (1 << diff_len)) - cm->invalid_delta_frame_id_minus_1 = 1; - aom_wb_write_literal(wb, delta_frame_id_minus_1, diff_len); - } - } - - if (!cm->error_resilient_mode && frame_size_override_flag) { - write_frame_size_with_refs(cpi, wb); - } else { - write_frame_size(cm, frame_size_override_flag, wb); - } - - if (cm->cur_frame_force_integer_mv) { - cm->allow_high_precision_mv = 0; - } else { - aom_wb_write_bit(wb, cm->allow_high_precision_mv); - } - fix_interp_filter(cm, cpi->td.counts); - write_frame_interp_filter(cm->interp_filter, wb); - aom_wb_write_bit(wb, cm->switchable_motion_mode); - if (frame_might_allow_ref_frame_mvs(cm)) { - aom_wb_write_bit(wb, cm->allow_ref_frame_mvs); - } else { - assert(cm->allow_ref_frame_mvs == 0); - } - } - } - - const int might_bwd_adapt = - !(seq_params->reduced_still_picture_hdr) && !(cm->disable_cdf_update); - if (cm->large_scale_tile) - cm->refresh_frame_context = REFRESH_FRAME_CONTEXT_DISABLED; - - if (might_bwd_adapt) { - aom_wb_write_bit( - wb, cm->refresh_frame_context == REFRESH_FRAME_CONTEXT_DISABLED); - } - - write_tile_info(cm, saved_wb, wb); - encode_quantization(cm, wb); - encode_segmentation(cm, xd, wb); - - if (cm->delta_q_present_flag) assert(cm->base_qindex > 0); - if (cm->base_qindex > 0) { - aom_wb_write_bit(wb, cm->delta_q_present_flag); - if (cm->delta_q_present_flag) { - aom_wb_write_literal(wb, get_msb(cm->delta_q_res), 2); - xd->current_qindex = cm->base_qindex; - if (cm->allow_intrabc) - assert(cm->delta_lf_present_flag == 0); - else - aom_wb_write_bit(wb, cm->delta_lf_present_flag); - if (cm->delta_lf_present_flag) { - aom_wb_write_literal(wb, get_msb(cm->delta_lf_res), 2); - aom_wb_write_bit(wb, cm->delta_lf_multi); - av1_reset_loop_filter_delta(xd, av1_num_planes(cm)); - } - } - } - - if (cm->all_lossless) { - assert(!av1_superres_scaled(cm)); - } else { - if (!cm->coded_lossless) { - encode_loopfilter(cm, wb); - encode_cdef(cm, wb); - } - encode_restoration_mode(cm, wb); - } - - write_tx_mode(cm, &cm->tx_mode, wb); - - if (cpi->allow_comp_inter_inter) { - const int use_hybrid_pred = cm->reference_mode == REFERENCE_MODE_SELECT; - - aom_wb_write_bit(wb, use_hybrid_pred); - } - - if (cm->is_skip_mode_allowed) aom_wb_write_bit(wb, cm->skip_mode_flag); - - if (frame_might_allow_warped_motion(cm)) - aom_wb_write_bit(wb, cm->allow_warped_motion); - else - assert(!cm->allow_warped_motion); - - aom_wb_write_bit(wb, cm->reduced_tx_set_used); - - if (!frame_is_intra_only(cm)) write_global_motion(cpi, wb); - - if (seq_params->film_grain_params_present && - (cm->show_frame || cm->showable_frame)) { - int flip_back_update_parameters_flag = 0; - if (cm->frame_type != INTER_FRAME && - cm->film_grain_params.update_parameters == 0) { - cm->film_grain_params.update_parameters = 1; - flip_back_update_parameters_flag = 1; - } - write_film_grain_params(cpi, wb); - - if (flip_back_update_parameters_flag) - cm->film_grain_params.update_parameters = 0; - } - - if (cm->large_scale_tile) write_ext_tile_info(cm, saved_wb, wb); -} - -static int choose_size_bytes(uint32_t size, int spare_msbs) { - // Choose the number of bytes required to represent size, without - // using the 'spare_msbs' number of most significant bits. - - // Make sure we will fit in 4 bytes to start with.. - if (spare_msbs > 0 && size >> (32 - spare_msbs) != 0) return -1; - - // Normalise to 32 bits - size <<= spare_msbs; - - if (size >> 24 != 0) - return 4; - else if (size >> 16 != 0) - return 3; - else if (size >> 8 != 0) - return 2; - else - return 1; -} - -static void mem_put_varsize(uint8_t *const dst, const int sz, const int val) { - switch (sz) { - case 1: dst[0] = (uint8_t)(val & 0xff); break; - case 2: mem_put_le16(dst, val); break; - case 3: mem_put_le24(dst, val); break; - case 4: mem_put_le32(dst, val); break; - default: assert(0 && "Invalid size"); break; - } -} - -static int remux_tiles(const AV1_COMMON *const cm, uint8_t *dst, - const uint32_t data_size, const uint32_t max_tile_size, - const uint32_t max_tile_col_size, - int *const tile_size_bytes, - int *const tile_col_size_bytes) { - // Choose the tile size bytes (tsb) and tile column size bytes (tcsb) - int tsb; - int tcsb; - - if (cm->large_scale_tile) { - // The top bit in the tile size field indicates tile copy mode, so we - // have 1 less bit to code the tile size - tsb = choose_size_bytes(max_tile_size, 1); - tcsb = choose_size_bytes(max_tile_col_size, 0); - } else { - tsb = choose_size_bytes(max_tile_size, 0); - tcsb = 4; // This is ignored - (void)max_tile_col_size; - } - - assert(tsb > 0); - assert(tcsb > 0); - - *tile_size_bytes = tsb; - *tile_col_size_bytes = tcsb; - if (tsb == 4 && tcsb == 4) return data_size; - - uint32_t wpos = 0; - uint32_t rpos = 0; - - if (cm->large_scale_tile) { - int tile_row; - int tile_col; - - for (tile_col = 0; tile_col < cm->tile_cols; tile_col++) { - // All but the last column has a column header - if (tile_col < cm->tile_cols - 1) { - uint32_t tile_col_size = mem_get_le32(dst + rpos); - rpos += 4; - - // Adjust the tile column size by the number of bytes removed - // from the tile size fields. - tile_col_size -= (4 - tsb) * cm->tile_rows; - - mem_put_varsize(dst + wpos, tcsb, tile_col_size); - wpos += tcsb; - } - - for (tile_row = 0; tile_row < cm->tile_rows; tile_row++) { - // All, including the last row has a header - uint32_t tile_header = mem_get_le32(dst + rpos); - rpos += 4; - - // If this is a copy tile, we need to shift the MSB to the - // top bit of the new width, and there is no data to copy. - if (tile_header >> 31 != 0) { - if (tsb < 4) tile_header >>= 32 - 8 * tsb; - mem_put_varsize(dst + wpos, tsb, tile_header); - wpos += tsb; - } else { - mem_put_varsize(dst + wpos, tsb, tile_header); - wpos += tsb; - - tile_header += AV1_MIN_TILE_SIZE_BYTES; - memmove(dst + wpos, dst + rpos, tile_header); - rpos += tile_header; - wpos += tile_header; - } - } - } - - assert(rpos > wpos); - assert(rpos == data_size); - - return wpos; - } - const int n_tiles = cm->tile_cols * cm->tile_rows; - int n; - - for (n = 0; n < n_tiles; n++) { - int tile_size; - - if (n == n_tiles - 1) { - tile_size = data_size - rpos; - } else { - tile_size = mem_get_le32(dst + rpos); - rpos += 4; - mem_put_varsize(dst + wpos, tsb, tile_size); - tile_size += AV1_MIN_TILE_SIZE_BYTES; - wpos += tsb; - } - - memmove(dst + wpos, dst + rpos, tile_size); - - rpos += tile_size; - wpos += tile_size; - } - - assert(rpos > wpos); - assert(rpos == data_size); - - return wpos; -} - -uint32_t write_obu_header(OBU_TYPE obu_type, int obu_extension, - uint8_t *const dst) { - struct aom_write_bit_buffer wb = { dst, 0 }; - uint32_t size = 0; - - aom_wb_write_literal(&wb, 0, 1); // forbidden bit. - aom_wb_write_literal(&wb, (int)obu_type, 4); - aom_wb_write_literal(&wb, obu_extension ? 1 : 0, 1); - aom_wb_write_literal(&wb, 1, 1); // obu_has_payload_length_field - aom_wb_write_literal(&wb, 0, 1); // reserved - - if (obu_extension) { - aom_wb_write_literal(&wb, obu_extension & 0xFF, 8); - } - - size = aom_wb_bytes_written(&wb); - return size; -} - -int write_uleb_obu_size(uint32_t obu_header_size, uint32_t obu_payload_size, - uint8_t *dest) { - const uint32_t obu_size = obu_payload_size; - const uint32_t offset = obu_header_size; - size_t coded_obu_size = 0; - - if (aom_uleb_encode(obu_size, sizeof(obu_size), dest + offset, - &coded_obu_size) != 0) { - return AOM_CODEC_ERROR; - } - - return AOM_CODEC_OK; -} - -static size_t obu_memmove(uint32_t obu_header_size, uint32_t obu_payload_size, - uint8_t *data) { - const size_t length_field_size = aom_uleb_size_in_bytes(obu_payload_size); - const uint32_t move_dst_offset = - (uint32_t)length_field_size + obu_header_size; - const uint32_t move_src_offset = obu_header_size; - const uint32_t move_size = obu_payload_size; - memmove(data + move_dst_offset, data + move_src_offset, move_size); - return length_field_size; -} - -static void add_trailing_bits(struct aom_write_bit_buffer *wb) { - if (aom_wb_is_byte_aligned(wb)) { - aom_wb_write_literal(wb, 0x80, 8); - } else { - // assumes that the other bits are already 0s - aom_wb_write_bit(wb, 1); - } -} - -static void write_bitstream_level(BitstreamLevel bl, - struct aom_write_bit_buffer *wb) { - uint8_t seq_level_idx = major_minor_to_seq_level_idx(bl); - assert(is_valid_seq_level_idx(seq_level_idx)); - aom_wb_write_literal(wb, seq_level_idx, LEVEL_BITS); -} - -uint32_t write_sequence_header_obu(AV1_COMP *cpi, uint8_t *const dst) { - AV1_COMMON *const cm = &cpi->common; - struct aom_write_bit_buffer wb = { dst, 0 }; - uint32_t size = 0; - - write_profile(cm->seq_params.profile, &wb); - - // Still picture or not - aom_wb_write_bit(&wb, cm->seq_params.still_picture); - assert(IMPLIES(!cm->seq_params.still_picture, - !cm->seq_params.reduced_still_picture_hdr)); - // whether to use reduced still picture header - aom_wb_write_bit(&wb, cm->seq_params.reduced_still_picture_hdr); - - if (cm->seq_params.reduced_still_picture_hdr) { - assert(cm->timing_info_present == 0); - assert(cm->seq_params.decoder_model_info_present_flag == 0); - assert(cm->seq_params.display_model_info_present_flag == 0); - write_bitstream_level(cm->seq_params.level[0], &wb); - } else { - aom_wb_write_bit(&wb, cm->timing_info_present); // timing info present flag - - if (cm->timing_info_present) { - // timing_info - write_timing_info_header(cm, &wb); - aom_wb_write_bit(&wb, cm->seq_params.decoder_model_info_present_flag); - if (cm->seq_params.decoder_model_info_present_flag) { - write_decoder_model_info(cm, &wb); - } - } - aom_wb_write_bit(&wb, cm->seq_params.display_model_info_present_flag); - aom_wb_write_literal(&wb, cm->seq_params.operating_points_cnt_minus_1, - OP_POINTS_CNT_MINUS_1_BITS); - int i; - for (i = 0; i < cm->seq_params.operating_points_cnt_minus_1 + 1; i++) { - aom_wb_write_literal(&wb, cm->seq_params.operating_point_idc[i], - OP_POINTS_IDC_BITS); - write_bitstream_level(cm->seq_params.level[i], &wb); - if (cm->seq_params.level[i].major > 3) - aom_wb_write_bit(&wb, cm->seq_params.tier[i]); - if (cm->seq_params.decoder_model_info_present_flag) { - aom_wb_write_bit(&wb, - cm->op_params[i].decoder_model_param_present_flag); - if (cm->op_params[i].decoder_model_param_present_flag) - write_dec_model_op_parameters(cm, &wb, i); - } - if (cm->seq_params.display_model_info_present_flag) { - aom_wb_write_bit(&wb, - cm->op_params[i].display_model_param_present_flag); - if (cm->op_params[i].display_model_param_present_flag) { - assert(cm->op_params[i].initial_display_delay <= 10); - aom_wb_write_literal(&wb, cm->op_params[i].initial_display_delay - 1, - 4); - } - } - } - } - write_sequence_header(cpi, &wb); - - write_color_config(&cm->seq_params, &wb); - - aom_wb_write_bit(&wb, cm->seq_params.film_grain_params_present); - - add_trailing_bits(&wb); - - size = aom_wb_bytes_written(&wb); - return size; -} - -static uint32_t write_frame_header_obu(AV1_COMP *cpi, - struct aom_write_bit_buffer *saved_wb, - uint8_t *const dst, - int append_trailing_bits) { - struct aom_write_bit_buffer wb = { dst, 0 }; - write_uncompressed_header_obu(cpi, saved_wb, &wb); - if (append_trailing_bits) add_trailing_bits(&wb); - return aom_wb_bytes_written(&wb); -} - -static uint32_t write_tile_group_header(uint8_t *const dst, int startTile, - int endTile, int tiles_log2, - int tile_start_and_end_present_flag) { - struct aom_write_bit_buffer wb = { dst, 0 }; - uint32_t size = 0; - - if (!tiles_log2) return size; - - aom_wb_write_bit(&wb, tile_start_and_end_present_flag); - - if (tile_start_and_end_present_flag) { - aom_wb_write_literal(&wb, startTile, tiles_log2); - aom_wb_write_literal(&wb, endTile, tiles_log2); - } - - size = aom_wb_bytes_written(&wb); - return size; -} - -typedef struct { - uint8_t *frame_header; - size_t obu_header_byte_offset; - size_t total_length; -} FrameHeaderInfo; - -static uint32_t write_tiles_in_tg_obus(AV1_COMP *const cpi, uint8_t *const dst, - struct aom_write_bit_buffer *saved_wb, - uint8_t obu_extension_header, - const FrameHeaderInfo *fh_info) { - AV1_COMMON *const cm = &cpi->common; - aom_writer mode_bc; - int tile_row, tile_col; - TileBufferEnc(*const tile_buffers)[MAX_TILE_COLS] = cpi->tile_buffers; - uint32_t total_size = 0; - const int tile_cols = cm->tile_cols; - const int tile_rows = cm->tile_rows; - unsigned int tile_size = 0; - unsigned int max_tile_size = 0; - unsigned int max_tile_col_size = 0; - const int n_log2_tiles = cm->log2_tile_rows + cm->log2_tile_cols; - // Fixed size tile groups for the moment - const int num_tg_hdrs = cm->num_tg; - const int tg_size = - (cm->large_scale_tile) - ? 1 - : (tile_rows * tile_cols + num_tg_hdrs - 1) / num_tg_hdrs; - int tile_count = 0; - int curr_tg_data_size = 0; - uint8_t *data = dst; - int new_tg = 1; - const int have_tiles = tile_cols * tile_rows > 1; - int first_tg = 1; - - cm->largest_tile_id = 0; - - if (cm->large_scale_tile) { - // For large_scale_tile case, we always have only one tile group, so it can - // be written as an OBU_FRAME. - const OBU_TYPE obu_type = OBU_FRAME; - const uint32_t tg_hdr_size = write_obu_header(obu_type, 0, data); - data += tg_hdr_size; - - const uint32_t frame_header_size = - write_frame_header_obu(cpi, saved_wb, data, 0); - data += frame_header_size; - total_size += frame_header_size; - -#define EXT_TILE_DEBUG 0 -#if EXT_TILE_DEBUG - { - char fn[20] = "./fh"; - fn[4] = cm->current_video_frame / 100 + '0'; - fn[5] = (cm->current_video_frame % 100) / 10 + '0'; - fn[6] = (cm->current_video_frame % 10) + '0'; - fn[7] = '\0'; - av1_print_uncompressed_frame_header(data - frame_header_size, - frame_header_size, fn); - } -#endif // EXT_TILE_DEBUG -#undef EXT_TILE_DEBUG - - int tile_size_bytes = 0; - int tile_col_size_bytes = 0; - - for (tile_col = 0; tile_col < tile_cols; tile_col++) { - TileInfo tile_info; - const int is_last_col = (tile_col == tile_cols - 1); - const uint32_t col_offset = total_size; - - av1_tile_set_col(&tile_info, cm, tile_col); - - // The last column does not have a column header - if (!is_last_col) total_size += 4; - - for (tile_row = 0; tile_row < tile_rows; tile_row++) { - TileBufferEnc *const buf = &tile_buffers[tile_row][tile_col]; - const int data_offset = have_tiles ? 4 : 0; - const int tile_idx = tile_row * tile_cols + tile_col; - TileDataEnc *this_tile = &cpi->tile_data[tile_idx]; - av1_tile_set_row(&tile_info, cm, tile_row); - - buf->data = dst + total_size + tg_hdr_size; - - // Is CONFIG_EXT_TILE = 1, every tile in the row has a header, - // even for the last one, unless no tiling is used at all. - total_size += data_offset; - // Initialise tile context from the frame context - this_tile->tctx = *cm->fc; - cpi->td.mb.e_mbd.tile_ctx = &this_tile->tctx; - mode_bc.allow_update_cdf = !cm->large_scale_tile; - mode_bc.allow_update_cdf = - mode_bc.allow_update_cdf && !cm->disable_cdf_update; - aom_start_encode(&mode_bc, buf->data + data_offset); - write_modes(cpi, &tile_info, &mode_bc, tile_row, tile_col); - aom_stop_encode(&mode_bc); - tile_size = mode_bc.pos; - buf->size = tile_size; - - // Record the maximum tile size we see, so we can compact headers later. - if (tile_size > max_tile_size) { - max_tile_size = tile_size; - cm->largest_tile_id = tile_cols * tile_row + tile_col; - } - - if (have_tiles) { - // tile header: size of this tile, or copy offset - uint32_t tile_header = tile_size - AV1_MIN_TILE_SIZE_BYTES; - const int tile_copy_mode = - ((AOMMAX(cm->tile_width, cm->tile_height) << MI_SIZE_LOG2) <= 256) - ? 1 - : 0; - - // If tile_copy_mode = 1, check if this tile is a copy tile. - // Very low chances to have copy tiles on the key frames, so don't - // search on key frames to reduce unnecessary search. - if (cm->frame_type != KEY_FRAME && tile_copy_mode) { - const int identical_tile_offset = - find_identical_tile(tile_row, tile_col, tile_buffers); - - if (identical_tile_offset > 0) { - tile_size = 0; - tile_header = identical_tile_offset | 0x80; - tile_header <<= 24; - } - } - - mem_put_le32(buf->data, tile_header); - } - - total_size += tile_size; - } - - if (!is_last_col) { - uint32_t col_size = total_size - col_offset - 4; - mem_put_le32(dst + col_offset + tg_hdr_size, col_size); - - // Record the maximum tile column size we see. - max_tile_col_size = AOMMAX(max_tile_col_size, col_size); - } - } - - if (have_tiles) { - total_size = remux_tiles(cm, data, total_size - frame_header_size, - max_tile_size, max_tile_col_size, - &tile_size_bytes, &tile_col_size_bytes); - total_size += frame_header_size; - } - - // In EXT_TILE case, only use 1 tile group. Follow the obu syntax, write - // current tile group size before tile data(include tile column header). - // Tile group size doesn't include the bytes storing tg size. - total_size += tg_hdr_size; - const uint32_t obu_payload_size = total_size - tg_hdr_size; - const size_t length_field_size = - obu_memmove(tg_hdr_size, obu_payload_size, dst); - if (write_uleb_obu_size(tg_hdr_size, obu_payload_size, dst) != - AOM_CODEC_OK) { - assert(0); - } - total_size += (uint32_t)length_field_size; - saved_wb->bit_buffer += length_field_size; - - // Now fill in the gaps in the uncompressed header. - if (have_tiles) { - assert(tile_col_size_bytes >= 1 && tile_col_size_bytes <= 4); - aom_wb_overwrite_literal(saved_wb, tile_col_size_bytes - 1, 2); - - assert(tile_size_bytes >= 1 && tile_size_bytes <= 4); - aom_wb_overwrite_literal(saved_wb, tile_size_bytes - 1, 2); - } - return total_size; - } - - uint32_t obu_header_size = 0; - uint8_t *tile_data_start = dst + total_size; - for (tile_row = 0; tile_row < tile_rows; tile_row++) { - TileInfo tile_info; - av1_tile_set_row(&tile_info, cm, tile_row); - - for (tile_col = 0; tile_col < tile_cols; tile_col++) { - const int tile_idx = tile_row * tile_cols + tile_col; - TileBufferEnc *const buf = &tile_buffers[tile_row][tile_col]; - TileDataEnc *this_tile = &cpi->tile_data[tile_idx]; - int is_last_tile_in_tg = 0; - - if (new_tg) { - data = dst + total_size; - - // A new tile group begins at this tile. Write the obu header and - // tile group header - const OBU_TYPE obu_type = - (num_tg_hdrs == 1) ? OBU_FRAME : OBU_TILE_GROUP; - curr_tg_data_size = - write_obu_header(obu_type, obu_extension_header, data); - obu_header_size = curr_tg_data_size; - - if (num_tg_hdrs == 1) { - curr_tg_data_size += write_frame_header_obu( - cpi, saved_wb, data + curr_tg_data_size, 0); - } - curr_tg_data_size += write_tile_group_header( - data + curr_tg_data_size, tile_idx, - AOMMIN(tile_idx + tg_size - 1, tile_cols * tile_rows - 1), - n_log2_tiles, cm->num_tg > 1); - total_size += curr_tg_data_size; - tile_data_start += curr_tg_data_size; - new_tg = 0; - tile_count = 0; - } - tile_count++; - av1_tile_set_col(&tile_info, cm, tile_col); - - if (tile_count == tg_size || tile_idx == (tile_cols * tile_rows - 1)) { - is_last_tile_in_tg = 1; - new_tg = 1; - } else { - is_last_tile_in_tg = 0; - } - - buf->data = dst + total_size; - - // The last tile of the tile group does not have a header. - if (!is_last_tile_in_tg) total_size += 4; - - // Initialise tile context from the frame context - this_tile->tctx = *cm->fc; - cpi->td.mb.e_mbd.tile_ctx = &this_tile->tctx; - mode_bc.allow_update_cdf = 1; - mode_bc.allow_update_cdf = - mode_bc.allow_update_cdf && !cm->disable_cdf_update; - const int num_planes = av1_num_planes(cm); - av1_reset_loop_restoration(&cpi->td.mb.e_mbd, num_planes); - - aom_start_encode(&mode_bc, dst + total_size); - write_modes(cpi, &tile_info, &mode_bc, tile_row, tile_col); - aom_stop_encode(&mode_bc); - tile_size = mode_bc.pos; - assert(tile_size >= AV1_MIN_TILE_SIZE_BYTES); - - curr_tg_data_size += (tile_size + (is_last_tile_in_tg ? 0 : 4)); - buf->size = tile_size; - if (tile_size > max_tile_size) { - cm->largest_tile_id = tile_cols * tile_row + tile_col; - max_tile_size = tile_size; - } - - if (!is_last_tile_in_tg) { - // size of this tile - mem_put_le32(buf->data, tile_size - AV1_MIN_TILE_SIZE_BYTES); - } else { - // write current tile group size - const uint32_t obu_payload_size = curr_tg_data_size - obu_header_size; - const size_t length_field_size = - obu_memmove(obu_header_size, obu_payload_size, data); - if (write_uleb_obu_size(obu_header_size, obu_payload_size, data) != - AOM_CODEC_OK) { - assert(0); - } - curr_tg_data_size += (int)length_field_size; - total_size += (uint32_t)length_field_size; - tile_data_start += length_field_size; - if (num_tg_hdrs == 1) { - // if this tg is combined with the frame header then update saved - // frame header base offset accroding to length field size - saved_wb->bit_buffer += length_field_size; - } - - if (!first_tg && cm->error_resilient_mode) { - // Make room for a duplicate Frame Header OBU. - memmove(data + fh_info->total_length, data, curr_tg_data_size); - - // Insert a copy of the Frame Header OBU. - memcpy(data, fh_info->frame_header, fh_info->total_length); - - // Force context update tile to be the first tile in error - // resiliant mode as the duplicate frame headers will have - // context_update_tile_id set to 0 - cm->largest_tile_id = 0; - - // Rewrite the OBU header to change the OBU type to Redundant Frame - // Header. - write_obu_header(OBU_REDUNDANT_FRAME_HEADER, obu_extension_header, - &data[fh_info->obu_header_byte_offset]); - - data += fh_info->total_length; - - curr_tg_data_size += (int)(fh_info->total_length); - total_size += (uint32_t)(fh_info->total_length); - } - first_tg = 0; - } - - total_size += tile_size; - } - } - - if (have_tiles) { - // Fill in context_update_tile_id indicating the tile to use for the - // cdf update. The encoder currently sets it to the largest tile - // (but is up to the encoder) - aom_wb_overwrite_literal(saved_wb, cm->largest_tile_id, - cm->log2_tile_cols + cm->log2_tile_rows); - // If more than one tile group. tile_size_bytes takes the default value 4 - // and does not need to be set. For a single tile group it is set in the - // section below. - if (num_tg_hdrs == 1) { - int tile_size_bytes = 4, unused; - const uint32_t tile_data_offset = (uint32_t)(tile_data_start - dst); - const uint32_t tile_data_size = total_size - tile_data_offset; - - total_size = - remux_tiles(cm, tile_data_start, tile_data_size, max_tile_size, - max_tile_col_size, &tile_size_bytes, &unused); - total_size += tile_data_offset; - assert(tile_size_bytes >= 1 && tile_size_bytes <= 4); - - aom_wb_overwrite_literal(saved_wb, tile_size_bytes - 1, 2); - - // Update the OBU length if remux_tiles() reduced the size. - uint64_t payload_size; - size_t length_field_size; - int res = - aom_uleb_decode(dst + obu_header_size, total_size - obu_header_size, - &payload_size, &length_field_size); - assert(res == 0); - (void)res; - - const uint64_t new_payload_size = - total_size - obu_header_size - length_field_size; - if (new_payload_size != payload_size) { - size_t new_length_field_size; - res = aom_uleb_encode(new_payload_size, length_field_size, - dst + obu_header_size, &new_length_field_size); - assert(res == 0); - if (new_length_field_size < length_field_size) { - const size_t src_offset = obu_header_size + length_field_size; - const size_t dst_offset = obu_header_size + new_length_field_size; - memmove(dst + dst_offset, dst + src_offset, (size_t)payload_size); - total_size -= (int)(length_field_size - new_length_field_size); - } - } - } - } - return total_size; -} - -int av1_pack_bitstream(AV1_COMP *const cpi, uint8_t *dst, size_t *size) { - uint8_t *data = dst; - uint32_t data_size; - AV1_COMMON *const cm = &cpi->common; - uint32_t obu_header_size = 0; - uint32_t obu_payload_size = 0; - FrameHeaderInfo fh_info = { NULL, 0, 0 }; - const uint8_t obu_extension_header = - cm->temporal_layer_id << 5 | cm->spatial_layer_id << 3 | 0; - -#if CONFIG_BITSTREAM_DEBUG - bitstream_queue_reset_write(); -#endif - - // The TD is now written outside the frame encode loop - - // write sequence header obu if KEY_FRAME, preceded by 4-byte size - if (cm->frame_type == KEY_FRAME && cm->show_frame) { - obu_header_size = write_obu_header(OBU_SEQUENCE_HEADER, 0, data); - - obu_payload_size = write_sequence_header_obu(cpi, data + obu_header_size); - const size_t length_field_size = - obu_memmove(obu_header_size, obu_payload_size, data); - if (write_uleb_obu_size(obu_header_size, obu_payload_size, data) != - AOM_CODEC_OK) { - return AOM_CODEC_ERROR; - } - - data += obu_header_size + obu_payload_size + length_field_size; - } - - const int write_frame_header = - (cm->num_tg > 1 || encode_show_existing_frame(cm)); - struct aom_write_bit_buffer saved_wb; - if (write_frame_header) { - // Write Frame Header OBU. - fh_info.frame_header = data; - obu_header_size = - write_obu_header(OBU_FRAME_HEADER, obu_extension_header, data); - obu_payload_size = - write_frame_header_obu(cpi, &saved_wb, data + obu_header_size, 1); - - const size_t length_field_size = - obu_memmove(obu_header_size, obu_payload_size, data); - if (write_uleb_obu_size(obu_header_size, obu_payload_size, data) != - AOM_CODEC_OK) { - return AOM_CODEC_ERROR; - } - - fh_info.obu_header_byte_offset = 0; - fh_info.total_length = - obu_header_size + obu_payload_size + length_field_size; - data += fh_info.total_length; - - // Since length_field_size is determined adaptively after frame header - // encoding, saved_wb must be adjusted accordingly. - saved_wb.bit_buffer += length_field_size; - } - - if (encode_show_existing_frame(cm)) { - data_size = 0; - } else { - // Each tile group obu will be preceded by 4-byte size of the tile group - // obu - data_size = write_tiles_in_tg_obus(cpi, data, &saved_wb, - obu_extension_header, &fh_info); - } - data += data_size; - *size = data - dst; - return AOM_CODEC_OK; -} |