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aomedia / aom / refs/heads/electric-sky / . / av1 / encoder / bitstream.c
blob: be21bbc6d4aa06bb7cb0fc40ddba60a4117705b3 [file] [log] [blame] [edit]
/*
* 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"
#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/ethread.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
#define SETUP_TIME_OH_CONST 5 // Setup time overhead constant per worker
#define JOB_DISP_TIME_OH_CONST 1 // Job dispatch time overhead per tile
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);
}
}
#if !CONFIG_REALTIME_ONLY
static AOM_INLINE 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);
#endif
static AOM_INLINE 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 AOM_INLINE 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 AOM_INLINE void write_drl_idx(
FRAME_CONTEXT *ec_ctx, const MB_MODE_INFO *mbmi,
const MB_MODE_INFO_EXT_FRAME *mbmi_ext_frame, aom_writer *w) {
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_frame->ref_mv_count > idx + 1) {
uint8_t drl_ctx = av1_drl_ctx(mbmi_ext_frame->weight, 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_frame->ref_mv_count > idx + 1) {
uint8_t drl_ctx = av1_drl_ctx(mbmi_ext_frame->weight, 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 AOM_INLINE 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 AOM_INLINE 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 *const ec_ctx = xd->tile_ctx;
const int max_blocks_high = max_block_high(xd, mbmi->bsize, 0);
const int max_blocks_wide = max_block_wide(xd, mbmi->bsize, 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->bsize, tx_size);
const int txb_size_index =
av1_get_txb_size_index(mbmi->bsize, 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) {
const int offsetr = blk_row + row;
for (int col = 0; col < tx_size_wide_unit[tx_size]; col += bsw) {
const int offsetc = blk_col + col;
write_tx_size_vartx(xd, mbmi, sub_txs, depth + 1, offsetr, offsetc, w);
}
}
}
}
static AOM_INLINE 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->bsize;
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_txfm = mi->skip_txfm;
const int ctx = av1_get_skip_txfm_context(xd);
FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
aom_write_symbol(w, skip_txfm, ec_ctx->skip_txfm_cdfs[ctx], 2);
return skip_txfm;
}
}
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->current_frame.skip_mode_info.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->bsize)) {
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 AOM_INLINE 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 AOM_INLINE 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->features.switchable_motion_mode
? motion_mode_allowed(cm->global_motion, xd, mbmi,
cm->features.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->bsize], 2);
break;
default:
aom_write_symbol(w, mbmi->motion_mode,
xd->tile_ctx->motion_mode_cdf[mbmi->bsize],
MOTION_MODES);
}
}
static AOM_INLINE 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 AOM_INLINE void write_delta_lflevel(const AV1_COMMON *cm,
const MACROBLOCKD *xd, int lf_id,
int delta_lflevel,
int delta_lf_multi, 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;
(void)cm;
if (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 AOM_INLINE void pack_map_tokens(aom_writer *w, const TokenExtra **tp,
int n, int num, MapCdf map_pb_cdf) {
const TokenExtra *p = *tp;
const int palette_size_idx = n - PALETTE_MIN_SIZE;
write_uniform(w, n, p->token); // The first color index.
++p;
--num;
for (int i = 0; i < num; ++i) {
assert((p->color_ctx >= 0) &&
(p->color_ctx < PALETTE_COLOR_INDEX_CONTEXTS));
aom_cdf_prob *color_map_cdf = map_pb_cdf[palette_size_idx][p->color_ctx];
aom_write_symbol(w, p->token, color_map_cdf, n);
++p;
}
*tp = p;
}
static AOM_INLINE 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->bsize, 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) {
av1_write_coeffs_txb(cm, x, w, blk_row, blk_col, plane, block, tx_size);
#if CONFIG_RD_DEBUG
TOKEN_STATS tmp_token_stats;
init_token_stats(&tmp_token_stats);
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;
const int row_end =
AOMMIN(tx_size_high_unit[tx_size], max_blocks_high - blk_row);
const int col_end =
AOMMIN(tx_size_wide_unit[tx_size], max_blocks_wide - blk_col);
assert(bsw > 0 && bsh > 0);
for (int r = 0; r < row_end; r += bsh) {
const int offsetr = blk_row + r;
for (int c = 0; c < col_end; c += bsw) {
const int offsetc = blk_col + c;
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 CommonModeInfoParams *const mi_params, uint8_t *segment_ids,
BLOCK_SIZE bsize, int mi_row, int mi_col, int segment_id) {
const int mi_offset = mi_row * mi_params->mi_cols + mi_col;
const int bw = mi_size_wide[bsize];
const int bh = mi_size_high[bsize];
const int xmis = AOMMIN(mi_params->mi_cols - mi_col, bw);
const int ymis = AOMMIN(mi_params->mi_rows - mi_row, bh);
for (int y = 0; y < ymis; ++y) {
for (int x = 0; x < xmis; ++x) {
segment_ids[mi_offset + y * mi_params->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 AOM_INLINE void write_segment_id(AV1_COMP *cpi, MACROBLOCKD *const xd,
const MB_MODE_INFO *const mbmi,
aom_writer *w,
const struct segmentation *seg,
struct segmentation_probs *segp,
int skip_txfm) {
if (!seg->enabled || !seg->update_map) return;
AV1_COMMON *const cm = &cpi->common;
int cdf_num;
const int pred = av1_get_spatial_seg_pred(cm, xd, &cdf_num);
const int mi_row = xd->mi_row;
const int mi_col = xd->mi_col;
if (skip_txfm) {
// Still need to transmit tx size for intra blocks even if skip_txfm 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->enc_seg.has_lossless_segment);
set_spatial_segment_id(&cm->mi_params, cm->cur_frame->seg_map, mbmi->bsize,
mi_row, mi_col, pred);
set_spatial_segment_id(&cm->mi_params, cpi->enc_seg.map, mbmi->bsize,
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->mi_params, cm->cur_frame->seg_map, mbmi->bsize,
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 AOM_INLINE 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->current_frame.reference_mode == REFERENCE_MODE_SELECT) {
if (is_comp_ref_allowed(mbmi->bsize))
aom_write_symbol(w, is_compound, av1_get_reference_mode_cdf(xd), 2);
} else {
assert((!is_compound) ==
(cm->current_frame.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 AOM_INLINE 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->bsize], 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 AOM_INLINE 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 AOM_INLINE void write_mb_interp_filter(AV1_COMMON *const cm,
ThreadData *td, aom_writer *w) {
const MACROBLOCKD *xd = &td->mb.e_mbd;
const MB_MODE_INFO *const mbmi = xd->mi[0];
FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
if (!av1_is_interp_needed(xd)) {
int_interpfilters filters = av1_broadcast_interp_filter(
av1_unswitchable_filter(cm->features.interp_filter));
assert(mbmi->interp_filters.as_int == filters.as_int);
(void)filters;
return;
}
if (cm->features.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);
++td->interp_filter_selected[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 AOM_INLINE 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 AOM_INLINE 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 AOM_INLINE 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 AOM_INLINE void write_palette_mode_info(const AV1_COMMON *cm,
const MACROBLOCKD *xd,
const MB_MODE_INFO *const mbmi,
aom_writer *w) {
const int num_planes = av1_num_planes(cm);
const BLOCK_SIZE bsize = mbmi->bsize;
assert(av1_allow_palette(cm->features.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 && xd->is_chroma_ref;
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,
TX_TYPE tx_type, TX_SIZE tx_size, aom_writer *w) {
MB_MODE_INFO *mbmi = xd->mi[0];
const FeatureFlags *const features = &cm->features;
const int is_inter = is_inter_block(mbmi);
if (get_ext_tx_types(tx_size, is_inter, features->reduced_tx_set_used) > 1 &&
((!cm->seg.enabled && cm->quant_params.base_qindex > 0) ||
(cm->seg.enabled && xd->qindex[mbmi->segment_id] > 0)) &&
!mbmi->skip_txfm &&
!segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) {
FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
const TX_SIZE square_tx_size = txsize_sqr_map[tx_size];
const TxSetType tx_set_type = av1_get_ext_tx_set_type(
tx_size, is_inter, features->reduced_tx_set_used);
const int eset =
get_ext_tx_set(tx_size, is_inter, features->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 AOM_INLINE 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 AOM_INLINE 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 AOM_INLINE void write_cfl_alphas(FRAME_CONTEXT *const ec_ctx,
uint8_t idx, int8_t 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 AOM_INLINE void write_cdef(AV1_COMMON *cm, MACROBLOCKD *const xd,
aom_writer *w, int skip) {
if (cm->features.coded_lossless || cm->features.allow_intrabc) return;
// At the start of a superblock, mark that we haven't yet written CDEF
// strengths for any of the CDEF units contained in this superblock.
const int sb_mask = (cm->seq_params->mib_size - 1);
const int mi_row_in_sb = (xd->mi_row & sb_mask);
const int mi_col_in_sb = (xd->mi_col & sb_mask);
if (mi_row_in_sb == 0 && mi_col_in_sb == 0) {
xd->cdef_transmitted[0] = xd->cdef_transmitted[1] =
xd->cdef_transmitted[2] = xd->cdef_transmitted[3] = false;
}
// CDEF unit size is 64x64 irrespective of the superblock size.
const int cdef_size = 1 << (6 - MI_SIZE_LOG2);
// Find index of this CDEF unit in this superblock.
const int index_mask = cdef_size;
const int cdef_unit_row_in_sb = ((xd->mi_row & index_mask) != 0);
const int cdef_unit_col_in_sb = ((xd->mi_col & index_mask) != 0);
const int index = (cm->seq_params->sb_size == BLOCK_128X128)
? cdef_unit_col_in_sb + 2 * cdef_unit_row_in_sb
: 0;
// Write CDEF strength to the first non-skip coding block in this CDEF unit.
if (!xd->cdef_transmitted[index] && !skip) {
// CDEF strength for this CDEF unit needs to be stored in the MB_MODE_INFO
// of the 1st block in this CDEF unit.
const int first_block_mask = ~(cdef_size - 1);
const CommonModeInfoParams *const mi_params = &cm->mi_params;
const int grid_idx =
get_mi_grid_idx(mi_params, xd->mi_row & first_block_mask,
xd->mi_col & first_block_mask);
const MB_MODE_INFO *const mbmi = mi_params->mi_grid_base[grid_idx];
aom_write_literal(w, mbmi->cdef_strength, cm->cdef_info.cdef_bits);
xd->cdef_transmitted[index] = true;
}
}
static AOM_INLINE void write_inter_segment_id(
AV1_COMP *cpi, MACROBLOCKD *const xd, aom_writer *w,
const struct segmentation *const seg, struct segmentation_probs *const segp,
int skip, int preskip) {
MB_MODE_INFO *const mbmi = xd->mi[0];
AV1_COMMON *const cm = &cpi->common;
const int mi_row = xd->mi_row;
const int mi_col = xd->mi_col;
if (seg->update_map) {
if (preskip) {
if (!seg->segid_preskip) return;
} else {
if (seg->segid_preskip) return;
if (skip) {
write_segment_id(cpi, xd, mbmi, w, seg, segp, 1);
if (seg->temporal_update) 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, xd, mbmi, w, seg, segp, 0);
}
if (pred_flag) {
set_spatial_segment_id(&cm->mi_params, cm->cur_frame->seg_map,
mbmi->bsize, mi_row, mi_col, mbmi->segment_id);
}
} else {
write_segment_id(cpi, xd, mbmi, w, seg, segp, 0);
}
}
}
// If delta q is present, writes delta_q index.
// Also writes delta_q loop filter levels, if present.
static AOM_INLINE void write_delta_q_params(AV1_COMMON *const cm,
MACROBLOCKD *const xd, int skip,
aom_writer *w) {
const DeltaQInfo *const delta_q_info = &cm->delta_q_info;
if (delta_q_info->delta_q_present_flag) {
const MB_MODE_INFO *const mbmi = xd->mi[0];
const BLOCK_SIZE bsize = mbmi->bsize;
const int super_block_upper_left =
((xd->mi_row & (cm->seq_params->mib_size - 1)) == 0) &&
((xd->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_base_qindex) /
delta_q_info->delta_q_res;
write_delta_qindex(xd, reduced_delta_qindex, w);
xd->current_base_qindex = mbmi->current_qindex;
if (delta_q_info->delta_lf_present_flag) {
if (delta_q_info->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]) /
delta_q_info->delta_lf_res;
write_delta_lflevel(cm, xd, lf_id, reduced_delta_lflevel, 1, 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) /
delta_q_info->delta_lf_res;
write_delta_lflevel(cm, xd, -1, reduced_delta_lflevel, 0, w);
xd->delta_lf_from_base = mbmi->delta_lf_from_base;
}
}
}
}
}
static AOM_INLINE void write_intra_prediction_modes(const AV1_COMMON *cm,
MACROBLOCKD *const xd,
int is_keyframe,
aom_writer *w) {
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->bsize;
// 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 && xd->is_chroma_ref) {
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->features.allow_screen_content_tools, bsize)) {
write_palette_mode_info(cm, xd, mbmi, w);
}
// Filter intra.
write_filter_intra_mode_info(cm, xd, mbmi, w);
}
static INLINE int16_t mode_context_analyzer(
const int16_t mode_context, const MV_REFERENCE_FRAME *const rf) {
if (rf[1] <= INTRA_FRAME) return mode_context;
const int16_t newmv_ctx = mode_context & NEWMV_CTX_MASK;
const int16_t refmv_ctx = (mode_context >> REFMV_OFFSET) & REFMV_CTX_MASK;
const int16_t comp_ctx = compound_mode_ctx_map[refmv_ctx >> 1][AOMMIN(
newmv_ctx, COMP_NEWMV_CTXS - 1)];
return comp_ctx;
}
static INLINE int_mv get_ref_mv_from_stack(
int ref_idx, const MV_REFERENCE_FRAME *ref_frame, int ref_mv_idx,
const MB_MODE_INFO_EXT_FRAME *mbmi_ext_frame) {
const int8_t ref_frame_type = av1_ref_frame_type(ref_frame);
const CANDIDATE_MV *curr_ref_mv_stack = mbmi_ext_frame->ref_mv_stack;
if (ref_frame[1] > INTRA_FRAME) {
assert(ref_idx == 0 || ref_idx == 1);
return ref_idx ? curr_ref_mv_stack[ref_mv_idx].comp_mv
: curr_ref_mv_stack[ref_mv_idx].this_mv;
}
assert(ref_idx == 0);
return ref_mv_idx < mbmi_ext_frame->ref_mv_count
? curr_ref_mv_stack[ref_mv_idx].this_mv
: mbmi_ext_frame->global_mvs[ref_frame_type];
}
static INLINE int_mv get_ref_mv(const MACROBLOCK *x, int ref_idx) {
const MACROBLOCKD *xd = &x->e_mbd;
const MB_MODE_INFO *mbmi = xd->mi[0];
int ref_mv_idx = mbmi->ref_mv_idx;
if (mbmi->mode == NEAR_NEWMV || mbmi->mode == NEW_NEARMV) {
assert(has_second_ref(mbmi));
ref_mv_idx += 1;
}
return get_ref_mv_from_stack(ref_idx, mbmi->ref_frame, ref_mv_idx,
x->mbmi_ext_frame);
}
static AOM_INLINE void pack_inter_mode_mvs(AV1_COMP *cpi, ThreadData *const td,
aom_writer *w) {
AV1_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &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_FRAME *const mbmi_ext_frame = x->mbmi_ext_frame;
const PREDICTION_MODE mode = mbmi->mode;
const int segment_id = mbmi->segment_id;
const BLOCK_SIZE bsize = mbmi->bsize;
const int allow_hp = cm->features.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, xd, w, seg, segp, 0, 1);
write_skip_mode(cm, xd, segment_id, mbmi, w);
assert(IMPLIES(mbmi->skip_mode, mbmi->skip_txfm));
const int skip =
mbmi->skip_mode ? 1 : write_skip(cm, xd, segment_id, mbmi, w);
write_inter_segment_id(cpi, xd, w, seg, segp, skip, 0);
write_cdef(cm, xd, w, skip);
write_delta_q_params(cm, xd, 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(cm, xd, 0, w);
} else {
int16_t mode_ctx;
av1_collect_neighbors_ref_counts(xd);
write_ref_frames(cm, xd, w);
mode_ctx =
mode_context_analyzer(mbmi_ext_frame->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_frame, 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 = get_ref_mv(x, ref);
av1_encode_mv(cpi, w, td, &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 = get_ref_mv(x, 1);
av1_encode_mv(cpi, w, td, &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 = get_ref_mv(x, 0);
av1_encode_mv(cpi, w, td, &mbmi->mv[0].as_mv, &ref_mv.as_mv, nmvc,
allow_hp);
}
if (cpi->common.current_frame.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 (av1_is_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], MAX_WEDGE_TYPES);
}
}
}
}
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): dist_wtd_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->order_hint_info.enable_dist_wtd_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.current_frame.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 - COMPOUND_WEDGE,
ec_ctx->compound_type_cdf[bsize],
MASKED_COMPOUND_TYPES);
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], MAX_WEDGE_TYPES);
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(cm, td, w);
}
}
static AOM_INLINE void write_intrabc_info(
MACROBLOCKD *xd, const MB_MODE_INFO_EXT_FRAME *mbmi_ext_frame,
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_frame->ref_mv_stack[0].this_mv;
av1_encode_dv(w, &mbmi->mv[0].as_mv, &dv_ref.as_mv, &ec_ctx->ndvc);
}
}
static AOM_INLINE void write_mb_modes_kf(
AV1_COMP *cpi, MACROBLOCKD *xd,
const MB_MODE_INFO_EXT_FRAME *mbmi_ext_frame, 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, xd, mbmi, w, seg, segp, 0);
const int skip = write_skip(cm, xd, mbmi->segment_id, mbmi, w);
if (!seg->segid_preskip && seg->update_map)
write_segment_id(cpi, xd, mbmi, w, seg, segp, skip);
write_cdef(cm, xd, w, skip);
write_delta_q_params(cm, xd, skip, w);
if (av1_allow_intrabc(cm)) {
write_intrabc_info(xd, mbmi_ext_frame, w);
if (is_intrabc_block(mbmi)) return;
}
write_intra_prediction_modes(cm, xd, 1, w);
}
#if CONFIG_RD_DEBUG
static AOM_INLINE void dump_mode_info(MB_MODE_INFO *mi) {
printf("\nmi->mi_row == %d\n", mi->mi_row);
printf("&& mi->mi_col == %d\n", mi->mi_col);
printf("&& mi->bsize == %d\n", mi->bsize);
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) {
printf("\nplane %d rd_stats->txb_coeff_cost %d token_stats->cost %d\n",
plane, rd_stats->txb_coeff_cost[plane], token_stats->cost);
return 1;
}
return 0;
}
#endif
#if ENC_MISMATCH_DEBUG
static AOM_INLINE void enc_dump_logs(
const AV1_COMMON *const cm,
const MBMIExtFrameBufferInfo *const mbmi_ext_info, int mi_row, int mi_col) {
const MB_MODE_INFO *const mbmi = *(
cm->mi_params.mi_grid_base + (mi_row * cm->mi_params.mi_stride + mi_col));
const MB_MODE_INFO_EXT_FRAME *const mbmi_ext_frame =
mbmi_ext_info->frame_base + get_mi_ext_idx(mi_row, mi_col,
cm->mi_params.mi_alloc_bsize,
mbmi_ext_info->stride);
if (is_inter_block(mbmi)) {
#define FRAME_TO_CHECK 11
if (cm->current_frame.frame_number == FRAME_TO_CHECK &&
cm->show_frame == 1) {
const BLOCK_SIZE bsize = mbmi->bsize;
int_mv mv[2] = { 0 };
const int is_comp_ref = has_second_ref(mbmi);
for (int 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;
}
const int16_t mode_ctx =
is_comp_ref ? 0
: mode_context_analyzer(mbmi_ext_frame->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_frame.frame_number, 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 AOM_INLINE void write_mbmi_b(AV1_COMP *cpi, ThreadData *const td,
aom_writer *w) {
AV1_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &td->mb.e_mbd;
MB_MODE_INFO *m = xd->mi[0];
if (frame_is_intra_only(cm)) {
write_mb_modes_kf(cpi, xd, td->mb.mbmi_ext_frame, 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(cm, &cpi->mbmi_ext_info, xd->mi_row, xd->mi_col);
#endif // ENC_MISMATCH_DEBUG
pack_inter_mode_mvs(cpi, td, w);
}
}
static AOM_INLINE 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->bsize;
assert(bsize < BLOCK_SIZES_ALL);
const int ss_x = pd->subsampling_x;
const int ss_y = pd->subsampling_y;
const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, ss_x, ss_y);
assert(plane_bsize < BLOCK_SIZES_ALL);
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, ss_x, ss_y);
const int num_4x4_w = mi_size_wide[plane_bsize];
const int num_4x4_h = mi_size_high[plane_bsize];
const int mu_blocks_wide = mi_size_wide[max_unit_bsize];
const int mu_blocks_high = mi_size_high[max_unit_bsize];
const int unit_height = AOMMIN(mu_blocks_high + (row >> ss_y), num_4x4_h);
const int unit_width = AOMMIN(mu_blocks_wide + (col >> ss_x), num_4x4_w);
for (int blk_row = row >> ss_y; blk_row < unit_height; blk_row += bkh) {
for (int blk_col = col >> ss_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 AOM_INLINE void write_tokens_b(AV1_COMP *cpi, MACROBLOCK *const x,
aom_writer *w, const TokenExtra **tok,
const TokenExtra *const tok_end) {
AV1_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &x->e_mbd;
MB_MODE_INFO *const mbmi = xd->mi[0];
const BLOCK_SIZE bsize = mbmi->bsize;
assert(!mbmi->skip_txfm);
const int is_inter = is_inter_block(mbmi);
if (!is_inter) {
av1_write_intra_coeffs_mb(cm, x, w, bsize);
} else {
int block[MAX_MB_PLANE] = { 0 };
assert(bsize == get_plane_block_size(bsize, xd->plane[0].subsampling_x,
xd->plane[0].subsampling_y));
const int num_4x4_w = mi_size_wide[bsize];
const int num_4x4_h = mi_size_high[bsize];
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 = mi_size_wide[max_unit_bsize];
int mu_blocks_high = mi_size_high[max_unit_bsize];
mu_blocks_wide = AOMMIN(num_4x4_w, mu_blocks_wide);
mu_blocks_high = AOMMIN(num_4x4_h, mu_blocks_high);
const int num_planes = av1_num_planes(cm);
for (int row = 0; row < num_4x4_h; row += mu_blocks_high) {
for (int col = 0; col < num_4x4_w; col += mu_blocks_wide) {
for (int plane = 0; plane < num_planes; ++plane) {
if (plane && !xd->is_chroma_ref) break;
write_inter_txb_coeff(cm, x, mbmi, w, tok, tok_end, &token_stats, row,
col, &block[plane], plane);
}
}
}
#if CONFIG_RD_DEBUG
for (int plane = 0; plane < num_planes; ++plane) {
if (mbmi->bsize >= BLOCK_8X8 &&
rd_token_stats_mismatch(&mbmi->rd_stats, &token_stats, plane)) {
dump_mode_info(mbmi);
assert(0);
}
}
#endif // CONFIG_RD_DEBUG
}
}
static AOM_INLINE void write_modes_b(AV1_COMP *cpi, ThreadData *const td,
const TileInfo *const tile, aom_writer *w,
const TokenExtra **tok,
const TokenExtra *const tok_end,
int mi_row, int mi_col) {
const AV1_COMMON *cm = &cpi->common;
const CommonModeInfoParams *const mi_params = &cm->mi_params;
MACROBLOCKD *xd = &td->mb.e_mbd;
FRAME_CONTEXT *tile_ctx = xd->tile_ctx;
const int grid_idx = mi_row * mi_params->mi_stride + mi_col;
xd->mi = mi_params->mi_grid_base + grid_idx;
td->mb.mbmi_ext_frame =
cpi->mbmi_ext_info.frame_base +
get_mi_ext_idx(mi_row, mi_col, cm->mi_params.mi_alloc_bsize,
cpi->mbmi_ext_info.stride);
xd->tx_type_map = mi_params->tx_type_map + grid_idx;
xd->tx_type_map_stride = mi_params->mi_stride;
const MB_MODE_INFO *mbmi = xd->mi[0];
const BLOCK_SIZE bsize = mbmi->bsize;
assert(bsize <= cm->seq_params->sb_size ||
(bsize >= BLOCK_SIZES && bsize < BLOCK_SIZES_ALL));
const int bh = mi_size_high[bsize];
const int bw = mi_size_wide[bsize];
set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, mi_params->mi_rows,
mi_params->mi_cols);
xd->above_txfm_context = cm->above_contexts.txfm[tile->tile_row] + mi_col;
xd->left_txfm_context =
xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK);
write_mbmi_b(cpi, td, w);
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->features.allow_screen_content_tools,
mbmi->bsize));
assert(!plane || xd->is_chroma_ref);
int rows, cols;
av1_get_block_dimensions(mbmi->bsize, plane, xd, NULL, NULL, &rows,
&cols);
assert(*tok < tok_end);
MapCdf map_pb_cdf = plane ? tile_ctx->palette_uv_color_index_cdf
: tile_ctx->palette_y_color_index_cdf;
pack_map_tokens(w, tok, palette_size_plane, rows * cols, map_pb_cdf);
}
}
const int is_inter_tx = is_inter_block(mbmi);
const int skip_txfm = mbmi->skip_txfm;
const int segment_id = mbmi->segment_id;
if (cm->features.tx_mode == TX_MODE_SELECT && block_signals_txsize(bsize) &&
!(is_inter_tx && skip_txfm) && !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 = mi_size_wide[bsize];
const int height = mi_size_high[bsize];
for (int idy = 0; idy < height; idy += txbh) {
for (int 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->width, xd->height, 0, xd);
}
} else {
set_txfm_ctxs(mbmi->tx_size, xd->width, xd->height,
skip_txfm && is_inter_tx, xd);
}
if (!mbmi->skip_txfm) {
int start = aom_tell_size(w);
write_tokens_b(cpi, &td->mb, w, tok, tok_end);
const int end = aom_tell_size(w);
td->coefficient_size += end - start;
}
}
static AOM_INLINE 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_params.mi_rows;
const int has_cols = (mi_col + hbs) < cm->mi_params.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 AOM_INLINE void write_modes_sb(
AV1_COMP *const cpi, ThreadData *const td, 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;
const CommonModeInfoParams *const mi_params = &cm->mi_params;
MACROBLOCKD *const xd = &td->mb.e_mbd;
assert(bsize < BLOCK_SIZES_ALL);
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 >= mi_params->mi_rows || mi_col >= mi_params->mi_cols) return;
#if !CONFIG_REALTIME_ONLY
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, td->counts);
}
}
}
}
#endif
write_partition(cm, xd, hbs, mi_row, mi_col, partition, bsize, w);
switch (partition) {
case PARTITION_NONE:
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col);
break;
case PARTITION_HORZ:
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col);
if (mi_row + hbs < mi_params->mi_rows)
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row + hbs, mi_col);
break;
case PARTITION_VERT:
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col);
if (mi_col + hbs < mi_params->mi_cols)
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col + hbs);
break;
case PARTITION_SPLIT:
write_modes_sb(cpi, td, tile, w, tok, tok_end, mi_row, mi_col, subsize);
write_modes_sb(cpi, td, tile, w, tok, tok_end, mi_row, mi_col + hbs,
subsize);
write_modes_sb(cpi, td, tile, w, tok, tok_end, mi_row + hbs, mi_col,
subsize);
write_modes_sb(cpi, td, tile, w, tok, tok_end, mi_row + hbs, mi_col + hbs,
subsize);
break;
case PARTITION_HORZ_A:
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col);
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col + hbs);
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row + hbs, mi_col);
break;
case PARTITION_HORZ_B:
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col);
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row + hbs, mi_col);
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row + hbs, mi_col + hbs);
break;
case PARTITION_VERT_A:
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col);
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row + hbs, mi_col);
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col + hbs);
break;
case PARTITION_VERT_B:
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col);
write_modes_b(cpi, td, tile, w, tok, tok_end, mi_row, mi_col + hbs);
write_modes_b(cpi, td, 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 >= mi_params->mi_rows) break;
write_modes_b(cpi, td, 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 >= mi_params->mi_cols) break;
write_modes_b(cpi, td, 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);
}
// Populate token pointers appropriately based on token_info.
static AOM_INLINE void get_token_pointers(const TokenInfo *token_info,
const int tile_row, int tile_col,
const int sb_row_in_tile,
const TokenExtra **tok,
const TokenExtra **tok_end) {
if (!is_token_info_allocated(token_info)) {
*tok = NULL;
*tok_end = NULL;
return;
}
*tok = token_info->tplist[tile_row][tile_col][sb_row_in_tile].start;
*tok_end =
*tok + token_info->tplist[tile_row][tile_col][sb_row_in_tile].count;
}
static AOM_INLINE void write_modes(AV1_COMP *const cpi, ThreadData *const td,
const TileInfo *const tile,
aom_writer *const w, int tile_row,
int tile_col) {
AV1_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &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;
const int num_planes = av1_num_planes(cm);
av1_zero_above_context(cm, xd, mi_col_start, mi_col_end, tile->tile_row);
av1_init_above_context(&cm->above_contexts, num_planes, tile->tile_row, xd);
if (cpi->common.delta_q_info.delta_q_present_flag) {
xd->current_base_qindex = cpi->common.quant_params.base_qindex;
if (cpi->common.delta_q_info.delta_lf_present_flag) {
av1_reset_loop_filter_delta(xd, num_planes);
}
}
for (int mi_row = mi_row_start; mi_row < mi_row_end;
mi_row += cm->seq_params->mib_size) {
const int sb_row_in_tile =
(mi_row - tile->mi_row_start) >> cm->seq_params->mib_size_log2;
const TokenInfo *token_info = &cpi->token_info;
const TokenExtra *tok;
const TokenExtra *tok_end;
get_token_pointers(token_info, tile_row, tile_col, sb_row_in_tile, &tok,
&tok_end);
av1_zero_left_context(xd);
for (int mi_col = mi_col_start; mi_col < mi_col_end;
mi_col += cm->seq_params->mib_size) {
td->mb.cb_coef_buff = av1_get_cb_coeff_buffer(cpi, mi_row, mi_col);
write_modes_sb(cpi, td, tile, w, &tok, tok_end, mi_row, mi_col,
cm->seq_params->sb_size);
}
assert(tok == tok_end);
}
}
static AOM_INLINE void encode_restoration_mode(
AV1_COMMON *cm, struct aom_write_bit_buffer *wb) {
assert(!cm->features.all_lossless);
if (!cm->seq_params->enable_restoration) return;
if (cm->features.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);
}
}
}
#if !CONFIG_REALTIME_ONLY
static AOM_INLINE 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 AOM_INLINE 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 = &av1_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 AOM_INLINE 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;
assert(frame_rtype != RESTORE_NONE);
(void)counts;
assert(!cm->features.all_lossless);
const int wiener_win = (plane > 0) ? WIENER_WIN_CHROMA : WIENER_WIN;
WienerInfo *ref_wiener_info = &xd->wiener_info[plane];
SgrprojInfo *ref_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, ref_wiener_info, w);
break;
case RESTORE_SGRPROJ:
write_sgrproj_filter(&rui->sgrproj_info, ref_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, ref_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, ref_sgrproj_info, w);
}
}
}
#endif // !CONFIG_REALTIME_ONLY
// Only write out the ref delta section if any of the elements
// will signal a delta.
static bool is_mode_ref_delta_meaningful(AV1_COMMON *cm) {
struct loopfilter *lf = &cm->lf;
if (!lf->mode_ref_delta_update) {
return 0;
}
const RefCntBuffer *buf = get_primary_ref_frame_buf(cm);
int8_t last_ref_deltas[REF_FRAMES];
int8_t last_mode_deltas[MAX_MODE_LF_DELTAS];
if (buf == NULL) {
av1_set_default_ref_deltas(last_ref_deltas);
av1_set_default_mode_deltas(last_mode_deltas);
} else {
memcpy(last_ref_deltas, buf->ref_deltas, REF_FRAMES);
memcpy(last_mode_deltas, buf->mode_deltas, MAX_MODE_LF_DELTAS);
}
for (int i = 0; i < REF_FRAMES; i++) {
if (lf->ref_deltas[i] != last_ref_deltas[i]) {
return true;
}
}
for (int i = 0; i < MAX_MODE_LF_DELTAS; i++) {
if (lf->mode_deltas[i] != last_mode_deltas[i]) {
return true;
}
}
return false;
}
static AOM_INLINE void encode_loopfilter(AV1_COMMON *cm,
struct aom_write_bit_buffer *wb) {
assert(!cm->features.coded_lossless);
if (cm->features.allow_intrabc) return;
const int num_planes = av1_num_planes(cm);
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);
aom_wb_write_bit(wb, lf->mode_ref_delta_enabled);
// Write out loop filter deltas applied at the MB level based on mode or
// ref frame (if they are enabled), only if there is information to write.
int meaningful = is_mode_ref_delta_meaningful(cm);
aom_wb_write_bit(wb, meaningful);
if (!meaningful) {
return;
}
const RefCntBuffer *buf = get_primary_ref_frame_buf(cm);
int8_t last_ref_deltas[REF_FRAMES];
int8_t last_mode_deltas[MAX_MODE_LF_DELTAS];
if (buf == NULL) {
av1_set_default_ref_deltas(last_ref_deltas);
av1_set_default_mode_deltas(last_mode_deltas);
} else {
memcpy(last_ref_deltas, buf->ref_deltas, REF_FRAMES);
memcpy(last_mode_deltas, buf->mode_deltas, MAX_MODE_LF_DELTAS);
}
for (int 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);
}
for (int 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 AOM_INLINE void encode_cdef(const AV1_COMMON *cm,
struct aom_write_bit_buffer *wb) {
assert(!cm->features.coded_lossless);
if (!cm->seq_params->enable_cdef) return;
if (cm->features.allow_intrabc) return;
const int num_planes = av1_num_planes(cm);
int i;
aom_wb_write_literal(wb, cm->cdef_info.cdef_damping - 3, 2);
aom_wb_write_literal(wb, cm->cdef_info.cdef_bits, 2);
for (i = 0; i < cm->cdef_info.nb_cdef_strengths; i++) {
aom_wb_write_literal(wb, cm->cdef_info.cdef_strengths[i],
CDEF_STRENGTH_BITS);
if (num_planes > 1)
aom_wb_write_literal(wb, cm->cdef_info.cdef_uv_strengths[i],
CDEF_STRENGTH_BITS);
}
}
static AOM_INLINE 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 AOM_INLINE void encode_quantization(
const CommonQuantParams *const quant_params, int num_planes,
bool separate_uv_delta_q, struct aom_write_bit_buffer *wb) {
aom_wb_write_literal(wb, quant_params->base_qindex, QINDEX_BITS);
write_delta_q(wb, quant_params->y_dc_delta_q);
if (num_planes > 1) {
int diff_uv_delta =
(quant_params->u_dc_delta_q != quant_params->v_dc_delta_q) ||
(quant_params->u_ac_delta_q != quant_params->v_ac_delta_q);
if (separate_uv_delta_q) aom_wb_write_bit(wb, diff_uv_delta);
write_delta_q(wb, quant_params->u_dc_delta_q);
write_delta_q(wb, quant_params->u_ac_delta_q);
if (diff_uv_delta) {
write_delta_q(wb, quant_params->v_dc_delta_q);
write_delta_q(wb, quant_params->v_ac_delta_q);
}
}
aom_wb_write_bit(wb, quant_params->using_qmatrix);
if (quant_params->using_qmatrix) {
aom_wb_write_literal(wb, quant_params->qmatrix_level_y, QM_LEVEL_BITS);
aom_wb_write_literal(wb, quant_params->qmatrix_level_u, QM_LEVEL_BITS);
if (!separate_uv_delta_q)
assert(quant_params->qmatrix_level_u == quant_params->qmatrix_level_v);
else
aom_wb_write_literal(wb, quant_params->qmatrix_level_v, QM_LEVEL_BITS);
}
}
static AOM_INLINE void encode_segmentation(AV1_COMMON *cm,
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->features.primary_ref_frame != PRIMARY_REF_NONE) {
aom_wb_write_bit(wb, seg->update_map);
if (seg->update_map) 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 AOM_INLINE 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);
}
// Same function as write_uniform but writing to uncompresses header wb
static AOM_INLINE 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 AOM_INLINE 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_params.mi_cols, cm->seq_params->mib_size_log2);
int height_mi =
ALIGN_POWER_OF_TWO(cm->mi_params.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;
const CommonTileParams *const tiles = &cm->tiles;
aom_wb_write_bit(wb, tiles->uniform_spacing);
if (tiles->uniform_spacing) {
int ones = tiles->log2_cols - tiles->min_log2_cols;
while (ones--) {
aom_wb_write_bit(wb, 1);
}
if (tiles->log2_cols < tiles->max_log2_cols) {
aom_wb_write_bit(wb, 0);
}
// rows
ones = tiles->log2_rows - tiles->min_log2_rows;
while (ones--) {
aom_wb_write_bit(wb, 1);
}
if (tiles->log2_rows < tiles->max_log2_rows) {
aom_wb_write_bit(wb, 0);
}
} else {
// Explicit tiles with configurable tile widths and heights
// columns
for (i = 0; i < tiles->cols; i++) {
size_sb = tiles->col_start_sb[i + 1] - tiles->col_start_sb[i];
wb_write_uniform(wb, AOMMIN(width_sb, tiles->max_width_sb), size_sb - 1);
width_sb -= size_sb;
}
assert(width_sb == 0);
// rows
for (i = 0; i < tiles->rows; i++) {
size_sb = tiles->row_start_sb[i + 1] - tiles->row_start_sb[i];
wb_write_uniform(wb, AOMMIN(height_sb, tiles->max_height_sb),
size_sb - 1);
height_sb -= size_sb;
}
assert(height_sb == 0);
}
}
static AOM_INLINE 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->tiles.rows * cm->tiles.cols > 1) {
// tile id used for cdf update
aom_wb_write_literal(wb, 0, cm->tiles.log2_cols + cm->tiles.log2_rows);
// Number of bytes in tile size - 1
aom_wb_write_literal(wb, 3, 2);
}
}
static AOM_INLINE 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->tiles.rows * cm->tiles.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 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;
const uint8_t *tile_data;
TileBufferEnc *candidate;
if (row < 0 || col < 0) continue;
const uint32_t tile_hdr = mem_get_le32(tile_buffers[row][col].data);
// Read out tile-copy-mode bit:
if ((tile_hdr >> 31) == 1) {
// The candidate is a copy tile itself: the offset is stored in bits
// 30 through 24 inclusive.
row_offset += (tile_hdr >> 24) & 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 AOM_INLINE 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 AOM_INLINE 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 AOM_INLINE 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 AOM_INLINE void write_frame_size_with_refs(
const AV1_COMMON *const cm, struct aom_write_bit_buffer *wb) {
int found = 0;
MV_REFERENCE_FRAME ref_frame;
for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
const YV12_BUFFER_CONFIG *cfg = get_ref_frame_yv12_buf(cm, 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 AOM_INLINE 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 AOM_INLINE 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 AOM_INLINE 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) {
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 AOM_INLINE void write_timing_info_header(
const aom_timing_info_t *const timing_info,
struct aom_write_bit_buffer *wb) {
aom_wb_write_unsigned_literal(wb, timing_info->num_units_in_display_tick, 32);
aom_wb_write_unsigned_literal(wb, timing_info->time_scale, 32);
aom_wb_write_bit(wb, timing_info->equal_picture_interval);
if (timing_info->equal_picture_interval) {
aom_wb_write_uvlc(wb, timing_info->num_ticks_per_picture - 1);
}
}
static AOM_INLINE void write_decoder_model_info(
const aom_dec_model_info_t *const decoder_model_info,
struct aom_write_bit_buffer *wb) {
aom_wb_write_literal(
wb, decoder_model_info->encoder_decoder_buffer_delay_length - 1, 5);
aom_wb_write_unsigned_literal(
wb, decoder_model_info->num_units_in_decoding_tick, 32);
aom_wb_write_literal(wb, decoder_model_info->buffer_removal_time_length - 1,
5);
aom_wb_write_literal(
wb, decoder_model_info->frame_presentation_time_length - 1, 5);
}
static AOM_INLINE void write_dec_model_op_parameters(
const aom_dec_model_op_parameters_t *op_params, int buffer_delay_length,
struct aom_write_bit_buffer *wb) {
aom_wb_write_unsigned_literal(wb, op_params->decoder_buffer_delay,
buffer_delay_length);
aom_wb_write_unsigned_literal(wb, op_params->encoder_buffer_delay,
buffer_delay_length);
aom_wb_write_bit(wb, op_params->low_delay_mode_flag);
}
static AOM_INLINE 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->seq_params->decoder_model_info.frame_presentation_time_length);
}
static AOM_INLINE void write_film_grain_params(
const AV1_COMP *const cpi, struct aom_write_bit_buffer *wb) {
const AV1_COMMON *const cm = &cpi->common;
const aom_film_grain_t *const pars = &cm->cur_frame->film_grain_params;
aom_wb_write_bit(wb, pars->apply_grain);
if (!pars->apply_grain) return;
aom_wb_write_literal(wb, pars->random_seed, 16);
if (cm->current_frame.frame_type == INTER_FRAME)
aom_wb_write_bit(wb, pars->update_parameters);
if (!pars->update_parameters) {
int ref_frame, ref_idx;
for (ref_frame = LAST_FRAME; ref_frame < REF_FRAMES; ref_frame++) {
ref_idx = get_ref_frame_map_idx(cm, ref_frame);
assert(ref_idx != INVALID_IDX);
const RefCntBuffer *const buf = cm->ref_frame_map[ref_idx];
if (buf->film_grain_params_present &&
aom_check_grain_params_equiv(pars, &buf->film_grain_params)) {
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 {
assert(!pars->chroma_scaling_from_luma);
}
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))) {
assert(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 AOM_INLINE void write_sb_size(const SequenceHeader *const 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 AOM_INLINE void write_sequence_header(
const SequenceHeader *const seq_params, struct aom_write_bit_buffer *wb) {
aom_wb_write_literal(wb, seq_params->num_bits_width - 1, 4);
aom_wb_write_literal(wb, seq_params->num_bits_height - 1, 4);
aom_wb_write_literal(wb, seq_params->max_frame_width - 1,
seq_params->num_bits_width);
aom_wb_write_literal(wb, seq_params->max_frame_height - 1,
seq_params->num_bits_height);
if (!seq_params->reduced_still_picture_hdr) {
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->order_hint_info.enable_order_hint);
if (seq_params->order_hint_info.enable_order_hint) {
aom_wb_write_bit(wb, seq_params->order_hint_info.enable_dist_wtd_comp);
aom_wb_write_bit(wb, seq_params->order_hint_info.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->order_hint_info.enable_order_hint)
aom_wb_write_literal(
wb, seq_params->order_hint_info.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 AOM_INLINE 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 AOM_INLINE 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->features.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_yv12_buf(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->features.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_frame.frame_number, 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 int check_frame_refs_short_signaling(AV1_COMMON *const cm) {
// Check whether all references are distinct frames.
const RefCntBuffer *seen_bufs[FRAME_BUFFERS] = { NULL };
int num_refs = 0;
for (int ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
const RefCntBuffer *const buf = get_ref_frame_buf(cm, ref_frame);
if (buf != NULL) {
int seen = 0;
for (int i = 0; i < num_refs; i++) {
if (seen_bufs[i] == buf) {
seen = 1;
break;
}
}
if (!seen) seen_bufs[num_refs++] = buf;
}
}
// 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.
return 0;
}
// Check whether the encoder side ref frame choices are aligned with that to
// be derived at the decoder side.
int remapped_ref_idx_decoder[REF_FRAMES];
const int lst_map_idx = get_ref_frame_map_idx(cm, LAST_FRAME);
const int gld_map_idx = get_ref_frame_map_idx(cm, GOLDEN_FRAME);
// Set up the frame refs mapping indexes according to the
// frame_refs_short_signaling policy.
av1_set_frame_refs(cm, remapped_ref_idx_decoder, 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.
int frame_refs_short_signaling = 1;
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.
RefCntBuffer *ref_frame_buf_new = NULL;
if (remapped_ref_idx_decoder[ref_idx] != INVALID_IDX) {
ref_frame_buf_new = cm->ref_frame_map[remapped_ref_idx_decoder[ref_idx]];
}
if (get_ref_frame_buf(cm, LAST_FRAME + ref_idx) != ref_frame_buf_new) {
frame_refs_short_signaling = 0;
break;
}
}
#if 0 // For debug
printf("\nFrame=%d: \n", cm->current_frame.frame_number);
printf("***frame_refs_short_signaling=%d\n", frame_refs_short_signaling);
for (int ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
printf("enc_ref(map_idx=%d)=%d, vs. "
"dec_ref(map_idx=%d)=%d\n",
get_ref_frame_map_idx(cm, ref_frame), ref_frame,
cm->remapped_ref_idx[ref_frame - LAST_FRAME],
ref_frame);
}
#endif // 0
return frame_refs_short_signaling;
}
// New function based on HLS R18
static AOM_INLINE void write_uncompressed_header_obu(
AV1_COMP *cpi, MACROBLOCKD *const xd, 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;
const CommonQuantParams *quant_params = &cm->quant_params;
CurrentFrame *const current_frame = &cm->current_frame;
FeatureFlags *const features = &cm->features;
current_frame->frame_refs_short_signaling = 0;
if (seq_params->still_picture) {
assert(cm->show_existing_frame == 0);
assert(cm->show_frame == 1);
assert(current_frame->frame_type == KEY_FRAME);
}
if (!seq_params->reduced_still_picture_hdr) {
if (encode_show_existing_frame(cm)) {
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 &&
seq_params->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);
}
return;
} else {
aom_wb_write_bit(wb, 0); // show_existing_frame
}
aom_wb_write_literal(wb, current_frame->frame_type, 2);
aom_wb_write_bit(wb, cm->show_frame);
if (cm->show_frame) {
if (seq_params->decoder_model_info_present_flag &&
seq_params->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(features->error_resilient_mode);
} else if (!(current_frame->frame_type == KEY_FRAME && cm->show_frame)) {
aom_wb_write_bit(wb, features->error_resilient_mode);
}
}
aom_wb_write_bit(wb, features->disable_cdf_update);
if (seq_params->force_screen_content_tools == 2) {
aom_wb_write_bit(wb, features->allow_screen_content_tools);
} else {
assert(features->allow_screen_content_tools ==
seq_params->force_screen_content_tools);
}
if (features->allow_screen_content_tools) {
if (seq_params->force_integer_mv == 2) {
aom_wb_write_bit(wb, features->cur_frame_force_integer_mv);
} else {
assert(features->cur_frame_force_integer_mv ==
seq_params->force_integer_mv);
}
} else {
assert(features->cur_frame_force_integer_mv == 0);
}
int frame_size_override_flag = 0;
if (seq_params->reduced_still_picture_hdr) {
assert(cm->superres_upscaled_width == seq_params->max_frame_width &&
cm->superres_upscaled_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->superres_upscaled_width > seq_params->max_frame_width ||
cm->superres_upscaled_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->superres_upscaled_width != seq_params->max_frame_width ||
cm->superres_upscaled_height != seq_params->max_frame_height);
if (!frame_is_sframe(cm)) aom_wb_write_bit(wb, frame_size_override_flag);
if (seq_params->order_hint_info.enable_order_hint)
aom_wb_write_literal(
wb, current_frame->order_hint,
seq_params->order_hint_info.order_hint_bits_minus_1 + 1);
if (!features->error_resilient_mode && !frame_is_intra_only(cm)) {
aom_wb_write_literal(wb, features->primary_ref_frame, PRIMARY_REF_BITS);
}
}
if (seq_params->decoder_model_info_present_flag) {
aom_wb_write_bit(wb, cpi->ppi->buffer_removal_time_present);
if (cpi->ppi->buffer_removal_time_present) {
for (int op_num = 0;
op_num < seq_params->operating_points_cnt_minus_1 + 1; op_num++) {
if (seq_params->op_params[op_num].decoder_model_param_present_flag) {
if (seq_params->operating_point_idc[op_num] == 0 ||
((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)) {
aom_wb_write_unsigned_literal(
wb, cm->buffer_removal_times[op_num],
seq_params->decoder_model_info.buffer_removal_time_length);
cm->buffer_removal_times[op_num]++;
if (cm->buffer_removal_times[op_num] == 0) {
aom_internal_error(cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"buffer_removal_time overflowed");
}
}
}
}
}
}
// Shown keyframes and switch-frames automatically refreshes all reference
// frames. For all other frame types, we need to write refresh_frame_flags.
if ((current_frame->frame_type == KEY_FRAME && !cm->show_frame) ||
current_frame->frame_type == INTER_FRAME ||
current_frame->frame_type == INTRA_ONLY_FRAME)
aom_wb_write_literal(wb, current_frame->refresh_frame_flags, REF_FRAMES);
if (!frame_is_intra_only(cm) || current_frame->refresh_frame_flags != 0xff) {
// Write all ref frame order hints if error_resilient_mode == 1
if (features->error_resilient_mode &&
seq_params->order_hint_info.enable_order_hint) {
for (int ref_idx = 0; ref_idx < REF_FRAMES; ref_idx++) {
aom_wb_write_literal(
wb, cm->ref_frame_map[ref_idx]->order_hint,
seq_params->order_hint_info.order_hint_bits_minus_1 + 1);
}
}
}
if (current_frame->frame_type == KEY_FRAME) {
write_frame_size(cm, frame_size_override_flag, wb);
assert(!av1_superres_scaled(cm) || !features->allow_intrabc);
if (features->allow_screen_content_tools && !av1_superres_scaled(cm))
aom_wb_write_bit(wb, features->allow_intrabc);
} else {
if (current_frame->frame_type == INTRA_ONLY_FRAME) {
write_frame_size(cm, frame_size_override_flag, wb);
assert(!av1_superres_scaled(cm) || !features->allow_intrabc);
if (features->allow_screen_content_tools && !av1_superres_scaled(cm))
aom_wb_write_bit(wb, features->allow_intrabc);
} else if (current_frame->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
current_frame->frame_refs_short_signaling =
seq_params->order_hint_info.enable_order_hint;
#endif // FRAME_REFS_SHORT_SIGNALING
if (current_frame->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.
current_frame->frame_refs_short_signaling =
check_frame_refs_short_signaling(cm);
}
if (seq_params->order_hint_info.enable_order_hint)
aom_wb_write_bit(wb, current_frame->frame_refs_short_signaling);
if (current_frame->frame_refs_short_signaling) {
const int lst_ref = get_ref_frame_map_idx(cm, LAST_FRAME);
aom_wb_write_literal(wb, lst_ref, REF_FRAMES_LOG2);
const int gld_ref = get_ref_frame_map_idx(cm, 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(cm, ref_frame) != INVALID_IDX);
if (!current_frame->frame_refs_short_signaling)
aom_wb_write_literal(wb, get_ref_frame_map_idx(cm, ref_frame),
REF_FRAMES_LOG2);
if (seq_params->frame_id_numbers_present_flag) {
int i = get_ref_frame_map_idx(cm, 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)) {
aom_internal_error(cm->error, AOM_CODEC_ERROR,
"Invalid delta_frame_id_minus_1");
}
aom_wb_write_literal(wb, delta_frame_id_minus_1, diff_len);
}
}
if (!features->error_resilient_mode && frame_size_override_flag) {
write_frame_size_with_refs(cm, wb);
} else {
write_frame_size(cm, frame_size_override_flag, wb);
}
if (!features->cur_frame_force_integer_mv)
aom_wb_write_bit(wb, features->allow_high_precision_mv);
write_frame_interp_filter(features->interp_filter, wb);
aom_wb_write_bit(wb, features->switchable_motion_mode);
if (frame_might_allow_ref_frame_mvs(cm)) {
aom_wb_write_bit(wb, features->allow_ref_frame_mvs);
} else {
assert(features->allow_ref_frame_mvs == 0);
}
}
}
const int might_bwd_adapt = !(seq_params->reduced_still_picture_hdr) &&
!(features->disable_cdf_update);
if (cm->tiles.large_scale)
assert(features->refresh_frame_context == REFRESH_FRAME_CONTEXT_DISABLED);
if (might_bwd_adapt) {
aom_wb_write_bit(
wb, features->refresh_frame_context == REFRESH_FRAME_CONTEXT_DISABLED);
}
write_tile_info(cm, saved_wb, wb);
encode_quantization(quant_params, av1_num_planes(cm),
cm->seq_params->separate_uv_delta_q, wb);
encode_segmentation(cm, wb);
const DeltaQInfo *const delta_q_info = &cm->delta_q_info;
if (delta_q_info->delta_q_present_flag) assert(quant_params->base_qindex > 0);
if (quant_params->base_qindex > 0) {
aom_wb_write_bit(wb, delta_q_info->delta_q_present_flag);
if (delta_q_info->delta_q_present_flag) {
aom_wb_write_literal(wb, get_msb(delta_q_info->delta_q_res), 2);
xd->current_base_qindex = quant_params->base_qindex;
if (features->allow_intrabc)
assert(delta_q_info->delta_lf_present_flag == 0);
else
aom_wb_write_bit(wb, delta_q_info->delta_lf_present_flag);
if (delta_q_info->delta_lf_present_flag) {
aom_wb_write_literal(wb, get_msb(delta_q_info->delta_lf_res), 2);
aom_wb_write_bit(wb, delta_q_info->delta_lf_multi);
av1_reset_loop_filter_delta(xd, av1_num_planes(cm));
}
}
}
if (features->all_lossless) {
assert(!av1_superres_scaled(cm));
} else {
if (!features->coded_lossless) {
encode_loopfilter(cm, wb);
encode_cdef(cm, wb);
}
encode_restoration_mode(cm, wb);
}
// Write TX mode
if (features->coded_lossless)
assert(features->tx_mode == ONLY_4X4);
else
aom_wb_write_bit(wb, features->tx_mode == TX_MODE_SELECT);
if (!frame_is_intra_only(cm)) {
const int use_hybrid_pred =
current_frame->reference_mode == REFERENCE_MODE_SELECT;
aom_wb_write_bit(wb, use_hybrid_pred);
}
if (current_frame->skip_mode_info.skip_mode_allowed)
aom_wb_write_bit(wb, current_frame->skip_mode_info.skip_mode_flag);
if (frame_might_allow_warped_motion(cm))
aom_wb_write_bit(wb, features->allow_warped_motion);
else
assert(!features->allow_warped_motion);
aom_wb_write_bit(wb, features->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))
write_film_grain_params(cpi, wb);
if (cm->tiles.large_scale) 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 AOM_INLINE 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 CommonTileParams *const tiles, 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 (tiles->large_scale) {
// 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 (tiles->large_scale) {
int tile_row;
int tile_col;
for (tile_col = 0; tile_col < tiles->cols; tile_col++) {
// All but the last column has a column header
if (tile_col < tiles->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) * tiles->rows;
mem_put_varsize(dst + wpos, tcsb, tile_col_size);
wpos += tcsb;
}
for (tile_row = 0; tile_row < tiles->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 = tiles->cols * tiles->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 av1_write_obu_header(AV1LevelParams *const level_params,
int *frame_header_count, OBU_TYPE obu_type,
int obu_extension, uint8_t *const dst) {
if (level_params->keep_level_stats &&
(obu_type == OBU_FRAME || obu_type == OBU_FRAME_HEADER))
++(*frame_header_count);
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 av1_write_uleb_obu_size(size_t obu_header_size, size_t obu_payload_size,
uint8_t *dest) {
const size_t offset = obu_header_size;
size_t coded_obu_size = 0;
const uint32_t obu_size = (uint32_t)obu_payload_size;
assert(obu_size == obu_payload_size);
if (aom_uleb_encode(obu_size, sizeof(obu_size), dest + offset,
&coded_obu_size) != 0) {
return AOM_CODEC_ERROR;
}
return AOM_CODEC_OK;
}
size_t av1_obu_memmove(size_t obu_header_size, size_t obu_payload_size,
uint8_t *data) {
const size_t length_field_size = aom_uleb_size_in_bytes(obu_payload_size);
const size_t move_dst_offset = length_field_size + obu_header_size;
const size_t move_src_offset = obu_header_size;
const size_t move_size = obu_payload_size;
memmove(data + move_dst_offset, data + move_src_offset, move_size);
return length_field_size;
}
static AOM_INLINE 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 AOM_INLINE void write_bitstream_level(AV1_LEVEL seq_level_idx,
struct aom_write_bit_buffer *wb) {
assert(is_valid_seq_level_idx(seq_level_idx));
aom_wb_write_literal(wb, seq_level_idx, LEVEL_BITS);
}
uint32_t av1_write_sequence_header_obu(const SequenceHeader *seq_params,
uint8_t *const dst) {
struct aom_write_bit_buffer wb = { dst, 0 };
uint32_t size = 0;
write_profile(seq_params->profile, &wb);
// Still picture or not
aom_wb_write_bit(&wb, seq_params->still_picture);
assert(IMPLIES(!seq_params->still_picture,
!seq_params->reduced_still_picture_hdr));
// whether to use reduced still picture header
aom_wb_write_bit(&wb, seq_params->reduced_still_picture_hdr);
if (seq_params->reduced_still_picture_hdr) {
assert(seq_params->timing_info_present == 0);
assert(seq_params->decoder_model_info_present_flag == 0);
assert(seq_params->display_model_info_present_flag == 0);
write_bitstream_level(seq_params->seq_level_idx[0], &wb);
} else {
aom_wb_write_bit(
&wb, seq_params->timing_info_present); // timing info present flag
if (seq_params->timing_info_present) {
// timing_info
write_timing_info_header(&seq_params->timing_info, &wb);
aom_wb_write_bit(&wb, seq_params->decoder_model_info_present_flag);
if (seq_params->decoder_model_info_present_flag) {
write_decoder_model_info(&seq_params->decoder_model_info, &wb);
}
}
aom_wb_write_bit(&wb, seq_params->display_model_info_present_flag);
aom_wb_write_literal(&wb, seq_params->operating_points_cnt_minus_1,
OP_POINTS_CNT_MINUS_1_BITS);
int i;
for (i = 0; i < seq_params->operating_points_cnt_minus_1 + 1; i++) {
aom_wb_write_literal(&wb, seq_params->operating_point_idc[i],
OP_POINTS_IDC_BITS);
write_bitstream_level(seq_params->seq_level_idx[i], &wb);
if (seq_params->seq_level_idx[i] >= SEQ_LEVEL_4_0)
aom_wb_write_bit(&wb, seq_params->tier[i]);
if (seq_params->decoder_model_info_present_flag) {
aom_wb_write_bit(
&wb, seq_params->op_params[i].decoder_model_param_present_flag);
if (seq_params->op_params[i].decoder_model_param_present_flag) {
write_dec_model_op_parameters(
&seq_params->op_params[i],
seq_params->decoder_model_info
.encoder_decoder_buffer_delay_length,
&wb);
}
}
if (seq_params->display_model_info_present_flag) {
aom_wb_write_bit(
&wb, seq_params->op_params[i].display_model_param_present_flag);
if (seq_params->op_params[i].display_model_param_present_flag) {
assert(seq_params->op_params[i].initial_display_delay <= 10);
aom_wb_write_literal(
&wb, seq_params->op_params[i].initial_display_delay - 1, 4);
}
}
}
}
write_sequence_header(seq_params, &wb);
write_color_config(seq_params, &wb);
aom_wb_write_bit(&wb, 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, MACROBLOCKD *const xd,
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, xd, 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 start_tile,
int end_tile, 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, start_tile, tiles_log2);
aom_wb_write_literal(&wb, end_tile, tiles_log2);
}
size = aom_wb_bytes_written(&wb);
return size;
}
extern void av1_print_uncompressed_frame_header(const uint8_t *data, int size,
const char *filename);
typedef struct {
uint32_t tg_hdr_size;
uint32_t frame_header_size;
} LargeTileFrameOBU;
// Initialize OBU header for large scale tile case.
static uint32_t init_large_scale_tile_obu_header(
AV1_COMP *const cpi, uint8_t **data, struct aom_write_bit_buffer *saved_wb,
LargeTileFrameOBU *lst_obu) {
AV1LevelParams *const level_params = &cpi->ppi->level_params;
CurrentFrame *const current_frame = &cpi->common.current_frame;
// 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;
lst_obu->tg_hdr_size = av1_write_obu_header(
level_params, &cpi->frame_header_count, obu_type, 0, *data);
*data += lst_obu->tg_hdr_size;
const uint32_t frame_header_size =
write_frame_header_obu(cpi, &cpi->td.mb.e_mbd, saved_wb, *data, 0);
*data += frame_header_size;
lst_obu->frame_header_size = frame_header_size;
// (yunqing) This test ensures the correctness of large scale tile coding.
if (cpi->oxcf.tile_cfg.enable_ext_tile_debug) {
char fn[20] = "./fh";
fn[4] = current_frame->frame_number / 100 + '0';
fn[5] = (current_frame->frame_number % 100) / 10 + '0';
fn[6] = (current_frame->frame_number % 10) + '0';
fn[7] = '\0';
av1_print_uncompressed_frame_header(*data - frame_header_size,
frame_header_size, fn);
}
return frame_header_size;
}
// Write total buffer size and related information into the OBU header for large
// scale tile case.
static void write_large_scale_tile_obu_size(
const CommonTileParams *const tiles, uint8_t *const dst, uint8_t *data,
struct aom_write_bit_buffer *saved_wb, LargeTileFrameOBU *const lst_obu,
int have_tiles, uint32_t *total_size, int max_tile_size,
int max_tile_col_size) {
int tile_size_bytes = 0;
int tile_col_size_bytes = 0;
if (have_tiles) {
*total_size = remux_tiles(
tiles, data, *total_size - lst_obu->frame_header_size, max_tile_size,
max_tile_col_size, &tile_size_bytes, &tile_col_size_bytes);
*total_size += lst_obu->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 += lst_obu->tg_hdr_size;
const uint32_t obu_payload_size = *total_size - lst_obu->tg_hdr_size;
const size_t length_field_size =
av1_obu_memmove(lst_obu->tg_hdr_size, obu_payload_size, dst);
if (av1_write_uleb_obu_size(lst_obu->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);
}
}
// Store information on each large scale tile in the OBU header.
static void write_large_scale_tile_obu(
AV1_COMP *const cpi, uint8_t *const dst, LargeTileFrameOBU *const lst_obu,
int *const largest_tile_id, uint32_t *total_size, const int have_tiles,
unsigned int *const max_tile_size, unsigned int *const max_tile_col_size) {
AV1_COMMON *const cm = &cpi->common;
const CommonTileParams *const tiles = &cm->tiles;
TileBufferEnc tile_buffers[MAX_TILE_ROWS][MAX_TILE_COLS];
const int tile_cols = tiles->cols;
const int tile_rows = tiles->rows;
unsigned int tile_size = 0;
av1_reset_pack_bs_thread_data(&cpi->td);
for (int 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 (int 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);
aom_writer mode_bc;
buf->data = dst + *total_size + lst_obu->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;
cpi->td.mb.e_mbd.tile_ctx = &this_tile->tctx;
mode_bc.allow_update_cdf = !tiles->large_scale;
mode_bc.allow_update_cdf =
mode_bc.allow_update_cdf && !cm->features.disable_cdf_update;
aom_start_encode(&mode_bc, buf->data + data_offset);
write_modes(cpi, &cpi->td, &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;
*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(tiles->width, tiles->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->current_frame.frame_type != KEY_FRAME && tile_copy_mode) {
const int identical_tile_offset =
find_identical_tile(tile_row, tile_col, tile_buffers);
// Indicate a copy-tile by setting the most significant bit.
// The row-offset to copy from is stored in the highest byte.
// remux_tiles will move these around later
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 + lst_obu->tg_hdr_size, col_size);
// Record the maximum tile column size we see.
*max_tile_col_size = AOMMAX(*max_tile_col_size, col_size);
}
}
av1_accumulate_pack_bs_thread_data(cpi, &cpi->td);
}
// Packs information in the obu header for large scale tiles.
static INLINE uint32_t pack_large_scale_tiles_in_tg_obus(
AV1_COMP *const cpi, uint8_t *const dst,
struct aom_write_bit_buffer *saved_wb, int *const largest_tile_id) {
AV1_COMMON *const cm = &cpi->common;
const CommonTileParams *const tiles = &cm->tiles;
uint32_t total_size = 0;
unsigned int max_tile_size = 0;
unsigned int max_tile_col_size = 0;
const int have_tiles = tiles->cols * tiles->rows > 1;
uint8_t *data = dst;
LargeTileFrameOBU lst_obu;
total_size +=
init_large_scale_tile_obu_header(cpi, &data, saved_wb, &lst_obu);
write_large_scale_tile_obu(cpi, dst, &lst_obu, largest_tile_id, &total_size,
have_tiles, &max_tile_size, &max_tile_col_size);
write_large_scale_tile_obu_size(tiles, dst, data, saved_wb, &lst_obu,
have_tiles, &total_size, max_tile_size,
max_tile_col_size);
return total_size;
}
// Writes obu, tile group and uncompressed headers to bitstream.
void av1_write_obu_tg_tile_headers(AV1_COMP *const cpi, MACROBLOCKD *const xd,
PackBSParams *const pack_bs_params,
const int tile_idx) {
AV1_COMMON *const cm = &cpi->common;
const CommonTileParams *const tiles = &cm->tiles;
int *const curr_tg_hdr_size = &pack_bs_params->curr_tg_hdr_size;
const int tg_size =
(tiles->rows * tiles->cols + cpi->num_tg - 1) / cpi->num_tg;
// Write Tile group, frame and OBU header
// A new tile group begins at this tile. Write the obu header and
// tile group header
const OBU_TYPE obu_type = (cpi->num_tg == 1) ? OBU_FRAME : OBU_TILE_GROUP;
*curr_tg_hdr_size = av1_write_obu_header(
&cpi->ppi->level_params, &cpi->frame_header_count, obu_type,
pack_bs_params->obu_extn_header, pack_bs_params->tile_data_curr);
pack_bs_params->obu_header_size = *curr_tg_hdr_size;
if (cpi->num_tg == 1)
*curr_tg_hdr_size += write_frame_header_obu(
cpi, xd, pack_bs_params->saved_wb,
pack_bs_params->tile_data_curr + *curr_tg_hdr_size, 0);
*curr_tg_hdr_size += write_tile_group_header(
pack_bs_params->tile_data_curr + *curr_tg_hdr_size, tile_idx,
AOMMIN(tile_idx + tg_size - 1, tiles->cols * tiles->rows - 1),
(tiles->log2_rows + tiles->log2_cols), cpi->num_tg > 1);
*pack_bs_params->total_size += *curr_tg_hdr_size;
}
// Pack tile data in the bitstream with tile_group, frame
// and OBU header.
void av1_pack_tile_info(AV1_COMP *const cpi, ThreadData *const td,
PackBSParams *const pack_bs_params) {
aom_writer mode_bc;
AV1_COMMON *const cm = &cpi->common;
int tile_row = pack_bs_params->tile_row;
int tile_col = pack_bs_params->tile_col;
uint32_t *const total_size = pack_bs_params->total_size;
TileInfo tile_info;
av1_tile_set_col(&tile_info, cm, tile_col);
av1_tile_set_row(&tile_info, cm, tile_row);
mode_bc.allow_update_cdf = 1;
mode_bc.allow_update_cdf =
mode_bc.allow_update_cdf && !cm->features.disable_cdf_update;
unsigned int tile_size;
const int num_planes = av1_num_planes(cm);
av1_reset_loop_restoration(&td->mb.e_mbd, num_planes);
pack_bs_params->buf.data = pack_bs_params->dst + *total_size;
// The last tile of the tile group does not have a header.
if (!pack_bs_params->is_last_tile_in_tg) *total_size += 4;
// Pack tile data
aom_start_encode(&mode_bc, pack_bs_params->dst + *total_size);
write_modes(cpi, td, &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);
pack_bs_params->buf.size = tile_size;
// Write tile size
if (!pack_bs_params->is_last_tile_in_tg) {
// size of this tile
mem_put_le32(pack_bs_params->buf.data, tile_size - AV1_MIN_TILE_SIZE_BYTES);
}
}
void av1_write_last_tile_info(
AV1_COMP *const cpi, const FrameHeaderInfo *fh_info,
struct aom_write_bit_buffer *saved_wb, size_t *curr_tg_data_size,
uint8_t *curr_tg_start, uint32_t *const total_size,
uint8_t **tile_data_start, int *const largest_tile_id,
int *const is_first_tg, uint32_t obu_header_size, uint8_t obu_extn_header) {
// write current tile group size
const uint32_t obu_payload_size =
(uint32_t)(*curr_tg_data_size) - obu_header_size;
const size_t length_field_size =
av1_obu_memmove(obu_header_size, obu_payload_size, curr_tg_start);
if (av1_write_uleb_obu_size(obu_header_size, obu_payload_size,
curr_tg_start) != 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 (cpi->num_tg == 1) {
// if this tg is combined with the frame header then update saved
// frame header base offset according to length field size
saved_wb->bit_buffer += length_field_size;
}
if (!(*is_first_tg) && cpi->common.features.error_resilient_mode) {
// Make room for a duplicate Frame Header OBU.
memmove(curr_tg_start + fh_info->total_length, curr_tg_start,
*curr_tg_data_size);
// Insert a copy of the Frame Header OBU.
memcpy(curr_tg_start, fh_info->frame_header, fh_info->total_length);
// Force context update tile to be the first tile in error
// resilient mode as the duplicate frame headers will have
// context_update_tile_id set to 0
*largest_tile_id = 0;
// Rewrite the OBU header to change the OBU type to Redundant Frame
// Header.
av1_write_obu_header(&cpi->ppi->level_params, &cpi->frame_header_count,
OBU_REDUNDANT_FRAME_HEADER, obu_extn_header,
&curr_tg_start[fh_info->obu_header_byte_offset]);
*curr_tg_data_size += (int)(fh_info->total_length);
*total_size += (uint32_t)(fh_info->total_length);
}
*is_first_tg = 0;
}
void av1_reset_pack_bs_thread_data(ThreadData *const td) {
td->coefficient_size = 0;
td->max_mv_magnitude = 0;
av1_zero(td->interp_filter_selected);
}
void av1_accumulate_pack_bs_thread_data(AV1_COMP *const cpi,
ThreadData const *td) {
int do_max_mv_magnitude_update = 1;
cpi->rc.coefficient_size += td->coefficient_size;
#if CONFIG_FRAME_PARALLEL_ENCODE
// Disable max_mv_magnitude update for parallel frames based on update flag.
if (!cpi->do_frame_data_update) do_max_mv_magnitude_update = 0;
#endif
if (cpi->sf.mv_sf.auto_mv_step_size && do_max_mv_magnitude_update)
cpi->mv_search_params.max_mv_magnitude =
AOMMAX(cpi->mv_search_params.max_mv_magnitude, td->max_mv_magnitude);
for (InterpFilter filter = EIGHTTAP_REGULAR; filter < SWITCHABLE; filter++)
cpi->common.cur_frame->interp_filter_selected[filter] +=
td->interp_filter_selected[filter];
}
// Store information related to each default tile in the OBU header.
static void write_tile_obu(
AV1_COMP *const cpi, uint8_t *const dst, uint32_t *total_size,
struct aom_write_bit_buffer *saved_wb, uint8_t obu_extn_header,
const FrameHeaderInfo *fh_info, int *const largest_tile_id,
unsigned int *max_tile_size, uint32_t *const obu_header_size,
uint8_t **tile_data_start) {
AV1_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &cpi->td.mb.e_mbd;
const CommonTileParams *const tiles = &cm->tiles;
const int tile_cols = tiles->cols;
const int tile_rows = tiles->rows;
// Fixed size tile groups for the moment
const int num_tg_hdrs = cpi->num_tg;
const int tg_size = (tile_rows * tile_cols + num_tg_hdrs - 1) / num_tg_hdrs;
int tile_count = 0;
size_t curr_tg_data_size = 0;
uint8_t *tile_data_curr = dst;
int new_tg = 1;
int is_first_tg = 1;
av1_reset_pack_bs_thread_data(&cpi->td);
for (int tile_row = 0; tile_row < tile_rows; tile_row++) {
for (int tile_col = 0; tile_col < tile_cols; tile_col++) {
const int tile_idx = tile_row * tile_cols + tile_col;
TileDataEnc *this_tile = &cpi->tile_data[tile_idx];
int is_last_tile_in_tg = 0;
if (new_tg) {
tile_data_curr = dst + *total_size;
tile_count = 0;
}
tile_count++;
if (tile_count == tg_size || tile_idx == (tile_cols * tile_rows - 1))
is_last_tile_in_tg = 1;
xd->tile_ctx = &this_tile->tctx;
// PackBSParams stores all parameters required to pack tile and header
// info.
PackBSParams pack_bs_params;
pack_bs_params.dst = dst;
pack_bs_params.curr_tg_hdr_size = 0;
pack_bs_params.is_last_tile_in_tg = is_last_tile_in_tg;
pack_bs_params.new_tg = new_tg;
pack_bs_params.obu_extn_header = obu_extn_header;
pack_bs_params.obu_header_size = 0;
pack_bs_params.saved_wb = saved_wb;
pack_bs_params.tile_col = tile_col;
pack_bs_params.tile_row = tile_row;
pack_bs_params.tile_data_curr = tile_data_curr;
pack_bs_params.total_size = total_size;
if (new_tg)
av1_write_obu_tg_tile_headers(cpi, xd, &pack_bs_params, tile_idx);
av1_pack_tile_info(cpi, &cpi->td, &pack_bs_params);
if (new_tg) {
curr_tg_data_size = pack_bs_params.curr_tg_hdr_size;
*tile_data_start += pack_bs_params.curr_tg_hdr_size;
*obu_header_size = pack_bs_params.obu_header_size;
new_tg = 0;
}
if (is_last_tile_in_tg) new_tg = 1;
curr_tg_data_size +=
(pack_bs_params.buf.size + (is_last_tile_in_tg ? 0 : 4));
if (pack_bs_params.buf.size > *max_tile_size) {
*largest_tile_id = tile_idx;
*max_tile_size = (unsigned int)pack_bs_params.buf.size;
}
if (is_last_tile_in_tg)
av1_write_last_tile_info(cpi, fh_info, saved_wb, &curr_tg_data_size,
tile_data_curr, total_size, tile_data_start,
largest_tile_id, &is_first_tg,
*obu_header_size, obu_extn_header);
*total_size += (uint32_t)pack_bs_params.buf.size;
}
}
av1_accumulate_pack_bs_thread_data(cpi, &cpi->td);
}
// Write total buffer size and related information into the OBU header for
// default tile case.
static void write_tile_obu_size(AV1_COMP *const cpi, uint8_t *const dst,
struct aom_write_bit_buffer *saved_wb,
int largest_tile_id, uint32_t *const total_size,
unsigned int max_tile_size,
uint32_t obu_header_size,
uint8_t *tile_data_start) {
const CommonTileParams *const tiles = &cpi->common.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, largest_tile_id,
(tiles->log2_cols + tiles->log2_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 (cpi->num_tg != 1) return;
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(tiles, tile_data_start, tile_data_size,
max_tile_size, 0, &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);
}
}
}
// As per the experiments, single-thread bitstream packing is better for
// frames with a smaller bitstream size. This behavior is due to setup time
// overhead of multithread function would be more than that of time required
// to pack the smaller bitstream of such frames. This function computes the
// number of required number of workers based on setup time overhead and job
// dispatch time overhead for given tiles and available workers.
int calc_pack_bs_mt_workers(const TileDataEnc *tile_data, int num_tiles,
int avail_workers) {
if (AOMMIN(avail_workers, num_tiles) <= 1) return 1;
uint64_t frame_abs_sum_level = 0;
for (int idx = 0; idx < num_tiles; idx++)
frame_abs_sum_level += tile_data[idx].abs_sum_level;
int ideal_num_workers = 1;
const float job_disp_time_const = (float)num_tiles * JOB_DISP_TIME_OH_CONST;
float max_sum = 0.0;
for (int num_workers = avail_workers; num_workers > 1; num_workers--) {
const float fas_per_worker_const =
((float)(num_workers - 1) / num_workers) * frame_abs_sum_level;
const float setup_time_const = (float)num_workers * SETUP_TIME_OH_CONST;
const float this_sum = fas_per_worker_const - setup_time_const -
job_disp_time_const / num_workers;
if (this_sum > max_sum) {
max_sum = this_sum;
ideal_num_workers = num_workers;
}
}
return ideal_num_workers;
}
static INLINE uint32_t pack_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, int *const largest_tile_id) {
const CommonTileParams *const tiles = &cpi->common.tiles;
uint32_t total_size = 0;
unsigned int max_tile_size = 0;
uint32_t obu_header_size = 0;
uint8_t *tile_data_start = dst;
const int tile_cols = tiles->cols;
const int tile_rows = tiles->rows;
const int num_tiles = tile_rows * tile_cols;
const int num_workers = calc_pack_bs_mt_workers(
cpi->tile_data, num_tiles, cpi->mt_info.num_mod_workers[MOD_PACK_BS]);
if (num_workers > 1) {
av1_write_tile_obu_mt(cpi, dst, &total_size, saved_wb, obu_extension_header,
fh_info, largest_tile_id, &max_tile_size,
&obu_header_size, &tile_data_start, num_workers);
} else {
write_tile_obu(cpi, dst, &total_size, saved_wb, obu_extension_header,
fh_info, largest_tile_id, &max_tile_size, &obu_header_size,
&tile_data_start);
}
if (num_tiles > 1)
write_tile_obu_size(cpi, dst, saved_wb, *largest_tile_id, &total_size,
max_tile_size, obu_header_size, tile_data_start);
return total_size;
}
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,
int *const largest_tile_id) {
AV1_COMMON *const cm = &cpi->common;
const CommonTileParams *const tiles = &cm->tiles;
*largest_tile_id = 0;
// Select the coding strategy (temporal or spatial)
if (cm->seg.enabled) av1_choose_segmap_coding_method(cm, &cpi->td.mb.e_mbd);
if (tiles->large_scale)
return pack_large_scale_tiles_in_tg_obus(cpi, dst, saved_wb,
largest_tile_id);
return pack_tiles_in_tg_obus(cpi, dst, saved_wb, obu_extension_header,
fh_info, largest_tile_id);
}
static size_t av1_write_metadata_obu(const aom_metadata_t *metadata,
uint8_t *const dst) {
size_t coded_metadata_size = 0;
const uint64_t metadata_type = (uint64_t)metadata->type;
if (aom_uleb_encode(metadata_type, sizeof(metadata_type), dst,
&coded_metadata_size) != 0) {
return 0;
}
memcpy(dst + coded_metadata_size, metadata->payload, metadata->sz);
// Add trailing bits.
dst[coded_metadata_size + metadata->sz] = 0x80;
return (uint32_t)(coded_metadata_size + metadata->sz + 1);
}
static size_t av1_write_metadata_array(AV1_COMP *const cpi, uint8_t *dst) {
if (!cpi->source) return 0;
AV1_COMMON *const cm = &cpi->common;
aom_metadata_array_t *arr = cpi->source->metadata;
if (!arr) return 0;
size_t obu_header_size = 0;
size_t obu_payload_size = 0;
size_t total_bytes_written = 0;
size_t length_field_size = 0;
for (size_t i = 0; i < arr->sz; i++) {
aom_metadata_t *current_metadata = arr->metadata_array[i];
if (current_metadata && current_metadata->payload) {
if ((cm->current_frame.frame_type == KEY_FRAME &&
current_metadata->insert_flag == AOM_MIF_KEY_FRAME) ||
(cm->current_frame.frame_type != KEY_FRAME &&
current_metadata->insert_flag == AOM_MIF_NON_KEY_FRAME) ||
current_metadata->insert_flag == AOM_MIF_ANY_FRAME) {
obu_header_size = av1_write_obu_header(&cpi->ppi->level_params,
&cpi->frame_header_count,
OBU_METADATA, 0, dst);
obu_payload_size =
av1_write_metadata_obu(current_metadata, dst + obu_header_size);
length_field_size =
av1_obu_memmove(obu_header_size, obu_payload_size, dst);
if (av1_write_uleb_obu_size(obu_header_size, obu_payload_size, dst) ==
AOM_CODEC_OK) {
const size_t obu_size = obu_header_size + obu_payload_size;
dst += obu_size + length_field_size;
total_bytes_written += obu_size + length_field_size;
} else {
aom_internal_error(cpi->common.error, AOM_CODEC_ERROR,
"Error writing metadata OBU size");
}
}
}
}
return total_bytes_written;
}
int av1_pack_bitstream(AV1_COMP *const cpi, uint8_t *dst, size_t *size,
int *const largest_tile_id) {
uint8_t *data = dst;
uint32_t data_size;
AV1_COMMON *const cm = &cpi->common;
AV1LevelParams *const level_params = &cpi->ppi->level_params;
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 no non-zero delta_q has been used, reset delta_q_present_flag
if (cm->delta_q_info.delta_q_present_flag && cpi->deltaq_used == 0) {
cm->delta_q_info.delta_q_present_flag = 0;
}
#if CONFIG_BITSTREAM_DEBUG
bitstream_queue_reset_write();
#endif
cpi->frame_header_count = 0;
// The TD is now written outside the frame encode loop
// write sequence header obu at each key frame, preceded by 4-byte size
if (cm->current_frame.frame_type == KEY_FRAME &&
cpi->ppi->gf_group.refbuf_state[cpi->gf_frame_index] == REFBUF_RESET) {
obu_header_size = av1_write_obu_header(
level_params, &cpi->frame_header_count, OBU_SEQUENCE_HEADER, 0, data);
obu_payload_size =
av1_write_sequence_header_obu(cm->seq_params, data + obu_header_size);
const size_t length_field_size =
av1_obu_memmove(obu_header_size, obu_payload_size, data);
if (av1_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;
}
// write metadata obus before the frame obu that has the show_frame flag set
if (cm->show_frame) data += av1_write_metadata_array(cpi, data);
const int write_frame_header =
(cpi->num_tg > 1 || encode_show_existing_frame(cm));
struct aom_write_bit_buffer saved_wb = { NULL, 0 };
size_t length_field = 0;
if (write_frame_header) {
// Write Frame Header OBU.
fh_info.frame_header = data;
obu_header_size =
av1_write_obu_header(level_params, &cpi->frame_header_count,
OBU_FRAME_HEADER, obu_extension_header, data);
obu_payload_size = write_frame_header_obu(cpi, &cpi->td.mb.e_mbd, &saved_wb,
data + obu_header_size, 1);
length_field = av1_obu_memmove(obu_header_size, obu_payload_size, data);
if (av1_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;
data += fh_info.total_length;
}
if (encode_show_existing_frame(cm)) {
data_size = 0;
} else {
// Since length_field is determined adaptively after frame header
// encoding, saved_wb must be adjusted accordingly.
saved_wb.bit_buffer += length_field;
// 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, largest_tile_id);
}
data += data_size;
*size = data - dst;
return AOM_CODEC_OK;
}