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aomedia / aom / 26b8a99eea1c0282ed4b48d6ebce98402cce3bf4 / . / av1 / decoder / decodeframe.c
blob: e8734c13387dc8e4de000c6126463a80eccca5ba [file] [log] [blame]
/*
* 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 <stdlib.h> // qsort()
#include "./aom_config.h"
#include "./aom_dsp_rtcd.h"
#include "./aom_scale_rtcd.h"
#include "./av1_rtcd.h"
#include "aom/aom_codec.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/binary_codes_reader.h"
#include "aom_dsp/bitreader.h"
#include "aom_dsp/bitreader_buffer.h"
#include "aom_mem/aom_mem.h"
#include "aom_ports/mem.h"
#include "aom_ports/mem_ops.h"
#include "aom_scale/aom_scale.h"
#include "aom_util/aom_thread.h"
#if CONFIG_BITSTREAM_DEBUG
#include "aom_util/debug_util.h"
#endif // CONFIG_BITSTREAM_DEBUG
#include "av1/common/alloccommon.h"
#if CONFIG_CDEF
#include "av1/common/cdef.h"
#endif
#if CONFIG_INSPECTION
#include "av1/decoder/inspection.h"
#endif
#include "av1/common/common.h"
#include "av1/common/entropy.h"
#include "av1/common/entropymode.h"
#include "av1/common/entropymv.h"
#include "av1/common/idct.h"
#include "av1/common/mvref_common.h"
#include "av1/common/pred_common.h"
#include "av1/common/quant_common.h"
#include "av1/common/reconinter.h"
#include "av1/common/reconintra.h"
#if CONFIG_FRAME_SUPERRES
#include "av1/common/resize.h"
#endif // CONFIG_FRAME_SUPERRES
#include "av1/common/seg_common.h"
#include "av1/common/thread_common.h"
#include "av1/common/tile_common.h"
#include "av1/decoder/decodeframe.h"
#include "av1/decoder/decodemv.h"
#include "av1/decoder/decoder.h"
#if CONFIG_LV_MAP
#include "av1/decoder/decodetxb.h"
#endif
#include "av1/decoder/detokenize.h"
#include "av1/decoder/dsubexp.h"
#include "av1/decoder/symbolrate.h"
#include "av1/common/warped_motion.h"
#define MAX_AV1_HEADER_SIZE 80
#define ACCT_STR __func__
#if CONFIG_CFL
#include "av1/common/cfl.h"
#endif
#if CONFIG_STRIPED_LOOP_RESTORATION && !CONFIG_LOOP_RESTORATION
#error "striped_loop_restoration requires loop_restoration"
#endif
#if CONFIG_LOOP_RESTORATION
static void loop_restoration_read_sb_coeffs(const AV1_COMMON *const cm,
MACROBLOCKD *xd,
aom_reader *const r, int plane,
int rtile_idx);
#endif
static struct aom_read_bit_buffer *init_read_bit_buffer(
AV1Decoder *pbi, struct aom_read_bit_buffer *rb, const uint8_t *data,
const uint8_t *data_end, uint8_t clear_data[MAX_AV1_HEADER_SIZE]);
static int read_compressed_header(AV1Decoder *pbi, const uint8_t *data,
size_t partition_size);
static size_t read_uncompressed_header(AV1Decoder *pbi,
struct aom_read_bit_buffer *rb);
static int is_compound_reference_allowed(const AV1_COMMON *cm) {
return !frame_is_intra_only(cm);
}
static void setup_compound_reference_mode(AV1_COMMON *cm) {
cm->comp_fwd_ref[0] = LAST_FRAME;
cm->comp_fwd_ref[1] = LAST2_FRAME;
cm->comp_fwd_ref[2] = LAST3_FRAME;
cm->comp_fwd_ref[3] = GOLDEN_FRAME;
cm->comp_bwd_ref[0] = BWDREF_FRAME;
cm->comp_bwd_ref[1] = ALTREF2_FRAME;
cm->comp_bwd_ref[2] = ALTREF_FRAME;
}
static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) {
return len != 0 && len <= (size_t)(end - start);
}
static int decode_unsigned_max(struct aom_read_bit_buffer *rb, int max) {
const int data = aom_rb_read_literal(rb, get_unsigned_bits(max));
return data > max ? max : data;
}
#if CONFIG_SIMPLIFY_TX_MODE
static TX_MODE read_tx_mode(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
if (cm->all_lossless) return ONLY_4X4;
#if CONFIG_VAR_TX_NO_TX_MODE
(void)rb;
return TX_MODE_SELECT;
#else
return aom_rb_read_bit(rb) ? TX_MODE_SELECT : TX_MODE_LARGEST;
#endif // CONFIG_VAR_TX_NO_TX_MODE
}
#else
static TX_MODE read_tx_mode(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
#if CONFIG_TX64X64
TX_MODE tx_mode;
#endif
if (cm->all_lossless) return ONLY_4X4;
#if CONFIG_VAR_TX_NO_TX_MODE
(void)rb;
return TX_MODE_SELECT;
#else
#if CONFIG_TX64X64
tx_mode = aom_rb_read_bit(rb) ? TX_MODE_SELECT : aom_rb_read_literal(rb, 2);
if (tx_mode == ALLOW_32X32) tx_mode += aom_rb_read_bit(rb);
return tx_mode;
#else
return aom_rb_read_bit(rb) ? TX_MODE_SELECT : aom_rb_read_literal(rb, 2);
#endif // CONFIG_TX64X64
#endif // CONFIG_VAR_TX_NO_TX_MODE
}
#endif // CONFIG_SIMPLIFY_TX_MODE
#if !CONFIG_NEW_MULTISYMBOL
static void read_inter_mode_probs(FRAME_CONTEXT *fc, aom_reader *r) {
int i;
for (i = 0; i < NEWMV_MODE_CONTEXTS; ++i)
av1_diff_update_prob(r, &fc->newmv_prob[i], ACCT_STR);
for (i = 0; i < GLOBALMV_MODE_CONTEXTS; ++i)
av1_diff_update_prob(r, &fc->zeromv_prob[i], ACCT_STR);
for (i = 0; i < REFMV_MODE_CONTEXTS; ++i)
av1_diff_update_prob(r, &fc->refmv_prob[i], ACCT_STR);
for (i = 0; i < DRL_MODE_CONTEXTS; ++i)
av1_diff_update_prob(r, &fc->drl_prob[i], ACCT_STR);
}
#endif
static REFERENCE_MODE read_frame_reference_mode(
const AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
if (is_compound_reference_allowed(cm)) {
#if CONFIG_REF_ADAPT
return aom_rb_read_bit(rb) ? REFERENCE_MODE_SELECT : SINGLE_REFERENCE;
#else
return aom_rb_read_bit(rb)
? REFERENCE_MODE_SELECT
: (aom_rb_read_bit(rb) ? COMPOUND_REFERENCE : SINGLE_REFERENCE);
#endif // CONFIG_REF_ADAPT
} else {
return SINGLE_REFERENCE;
}
}
#if !CONFIG_NEW_MULTISYMBOL
static void read_frame_reference_mode_probs(AV1_COMMON *cm, aom_reader *r) {
FRAME_CONTEXT *const fc = cm->fc;
int i;
if (cm->reference_mode == REFERENCE_MODE_SELECT)
for (i = 0; i < COMP_INTER_CONTEXTS; ++i)
av1_diff_update_prob(r, &fc->comp_inter_prob[i], ACCT_STR);
if (cm->reference_mode != COMPOUND_REFERENCE) {
for (i = 0; i < REF_CONTEXTS; ++i) {
int j;
for (j = 0; j < (SINGLE_REFS - 1); ++j) {
av1_diff_update_prob(r, &fc->single_ref_prob[i][j], ACCT_STR);
}
}
}
if (cm->reference_mode != SINGLE_REFERENCE) {
#if CONFIG_EXT_COMP_REFS
for (i = 0; i < COMP_REF_TYPE_CONTEXTS; ++i)
av1_diff_update_prob(r, &fc->comp_ref_type_prob[i], ACCT_STR);
for (i = 0; i < UNI_COMP_REF_CONTEXTS; ++i) {
int j;
for (j = 0; j < (UNIDIR_COMP_REFS - 1); ++j)
av1_diff_update_prob(r, &fc->uni_comp_ref_prob[i][j], ACCT_STR);
}
#endif // CONFIG_EXT_COMP_REFS
for (i = 0; i < REF_CONTEXTS; ++i) {
int j;
for (j = 0; j < (FWD_REFS - 1); ++j)
av1_diff_update_prob(r, &fc->comp_ref_prob[i][j], ACCT_STR);
for (j = 0; j < (BWD_REFS - 1); ++j)
av1_diff_update_prob(r, &fc->comp_bwdref_prob[i][j], ACCT_STR);
}
}
}
static void update_mv_probs(aom_prob *p, int n, aom_reader *r) {
int i;
for (i = 0; i < n; ++i) av1_diff_update_prob(r, &p[i], ACCT_STR);
}
static void read_mv_probs(nmv_context *ctx, int allow_hp, aom_reader *r) {
int i;
if (allow_hp) {
for (i = 0; i < 2; ++i) {
nmv_component *const comp_ctx = &ctx->comps[i];
update_mv_probs(&comp_ctx->class0_hp, 1, r);
update_mv_probs(&comp_ctx->hp, 1, r);
}
}
}
#endif
static void inverse_transform_block(MACROBLOCKD *xd, int plane,
const TX_TYPE tx_type,
const TX_SIZE tx_size, uint8_t *dst,
int stride, int16_t scan_line, int eob) {
struct macroblockd_plane *const pd = &xd->plane[plane];
tran_low_t *const dqcoeff = pd->dqcoeff;
av1_inverse_transform_block(xd, dqcoeff,
#if CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
xd->mrc_mask,
#endif // CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
plane, tx_type, tx_size, dst, stride, eob);
memset(dqcoeff, 0, (scan_line + 1) * sizeof(dqcoeff[0]));
}
static int get_block_idx(const MACROBLOCKD *xd, int plane, int row, int col) {
const int bsize = xd->mi[0]->mbmi.sb_type;
const struct macroblockd_plane *pd = &xd->plane[plane];
const BLOCK_SIZE plane_bsize =
AOMMAX(BLOCK_4X4, get_plane_block_size(bsize, pd));
const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);
const TX_SIZE tx_size = av1_get_tx_size(plane, xd);
const uint8_t txh_unit = tx_size_high_unit[tx_size];
return row * max_blocks_wide + col * txh_unit;
}
static void predict_and_reconstruct_intra_block(
AV1_COMMON *cm, MACROBLOCKD *const xd, aom_reader *const r,
MB_MODE_INFO *const mbmi, int plane, int row, int col, TX_SIZE tx_size) {
PLANE_TYPE plane_type = get_plane_type(plane);
const int block_idx = get_block_idx(xd, plane, row, col);
av1_predict_intra_block_facade(cm, xd, plane, block_idx, col, row, tx_size);
if (!mbmi->skip) {
struct macroblockd_plane *const pd = &xd->plane[plane];
#if CONFIG_LV_MAP
int16_t max_scan_line = 0;
int eob;
av1_read_coeffs_txb_facade(cm, xd, r, row, col, block_idx, plane,
pd->dqcoeff, tx_size, &max_scan_line, &eob);
// tx_type will be read out in av1_read_coeffs_txb_facade
const TX_TYPE tx_type =
av1_get_tx_type(plane_type, xd, row, col, block_idx, tx_size);
#else // CONFIG_LV_MAP
const TX_TYPE tx_type =
av1_get_tx_type(plane_type, xd, row, col, block_idx, tx_size);
const SCAN_ORDER *scan_order = get_scan(cm, tx_size, tx_type, mbmi);
int16_t max_scan_line = 0;
const int eob =
av1_decode_block_tokens(cm, xd, plane, scan_order, col, row, tx_size,
tx_type, &max_scan_line, r, mbmi->segment_id);
#endif // CONFIG_LV_MAP
if (eob) {
uint8_t *dst =
&pd->dst.buf[(row * pd->dst.stride + col) << tx_size_wide_log2[0]];
inverse_transform_block(xd, plane, tx_type, tx_size, dst, pd->dst.stride,
max_scan_line, eob);
}
}
#if CONFIG_CFL
if (plane == AOM_PLANE_Y && xd->cfl->store_y) {
cfl_store_tx(xd, row, col, tx_size, mbmi->sb_type);
}
#endif // CONFIG_CFL
}
static void decode_reconstruct_tx(AV1_COMMON *cm, MACROBLOCKD *const xd,
aom_reader *r, MB_MODE_INFO *const mbmi,
int plane, BLOCK_SIZE plane_bsize,
int blk_row, int blk_col, int block,
TX_SIZE tx_size, int *eob_total) {
const struct macroblockd_plane *const pd = &xd->plane[plane];
const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
const int tx_row = blk_row >> (1 - pd->subsampling_y);
const int tx_col = blk_col >> (1 - pd->subsampling_x);
const TX_SIZE plane_tx_size =
plane ? uv_txsize_lookup[bsize][mbmi->inter_tx_size[tx_row][tx_col]][0][0]
: mbmi->inter_tx_size[tx_row][tx_col];
// Scale to match transform block unit.
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;
if (tx_size == plane_tx_size) {
PLANE_TYPE plane_type = get_plane_type(plane);
#if CONFIG_LV_MAP
int16_t max_scan_line = 0;
int eob;
av1_read_coeffs_txb_facade(cm, xd, r, blk_row, blk_col, block, plane,
pd->dqcoeff, tx_size, &max_scan_line, &eob);
// tx_type will be read out in av1_read_coeffs_txb_facade
const TX_TYPE tx_type =
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, plane_tx_size);
#else // CONFIG_LV_MAP
const TX_TYPE tx_type =
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, plane_tx_size);
const SCAN_ORDER *sc = get_scan(cm, plane_tx_size, tx_type, mbmi);
int16_t max_scan_line = 0;
const int eob = av1_decode_block_tokens(
cm, xd, plane, sc, blk_col, blk_row, plane_tx_size, tx_type,
&max_scan_line, r, mbmi->segment_id);
#endif // CONFIG_LV_MAP
inverse_transform_block(xd, plane, tx_type, plane_tx_size,
&pd->dst.buf[(blk_row * pd->dst.stride + blk_col)
<< tx_size_wide_log2[0]],
pd->dst.stride, max_scan_line, eob);
*eob_total += eob;
} else {
#if CONFIG_RECT_TX_EXT
int is_qttx = plane_tx_size == quarter_txsize_lookup[plane_bsize];
const TX_SIZE sub_txs = is_qttx ? plane_tx_size : sub_tx_size_map[tx_size];
if (is_qttx) assert(blk_row == 0 && blk_col == 0 && block == 0);
#else
const TX_SIZE sub_txs = sub_tx_size_map[tx_size];
assert(IMPLIES(tx_size <= TX_4X4, sub_txs == tx_size));
assert(IMPLIES(tx_size > TX_4X4, sub_txs < tx_size));
#endif
const int bsl = tx_size_wide_unit[sub_txs];
int sub_step = tx_size_wide_unit[sub_txs] * tx_size_high_unit[sub_txs];
int i;
assert(bsl > 0);
for (i = 0; i < 4; ++i) {
#if CONFIG_RECT_TX_EXT
int is_wide_tx = tx_size_wide_unit[sub_txs] > tx_size_high_unit[sub_txs];
const int offsetr =
is_qttx ? (is_wide_tx ? i * tx_size_high_unit[sub_txs] : 0)
: blk_row + ((i >> 1) * bsl);
const int offsetc =
is_qttx ? (is_wide_tx ? 0 : i * tx_size_wide_unit[sub_txs])
: blk_col + (i & 0x01) * bsl;
#else
const int offsetr = blk_row + (i >> 1) * bsl;
const int offsetc = blk_col + (i & 0x01) * bsl;
#endif
if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue;
decode_reconstruct_tx(cm, xd, r, mbmi, plane, plane_bsize, offsetr,
offsetc, block, sub_txs, eob_total);
block += sub_step;
}
}
}
static void set_offsets(AV1_COMMON *const cm, MACROBLOCKD *const xd,
BLOCK_SIZE bsize, int mi_row, int mi_col, int bw,
int bh, int x_mis, int y_mis) {
const int offset = mi_row * cm->mi_stride + mi_col;
int x, y;
const TileInfo *const tile = &xd->tile;
xd->mi = cm->mi_grid_visible + offset;
xd->mi[0] = &cm->mi[offset];
// TODO(slavarnway): Generate sb_type based on bwl and bhl, instead of
// passing bsize from decode_partition().
xd->mi[0]->mbmi.sb_type = bsize;
#if CONFIG_RD_DEBUG
xd->mi[0]->mbmi.mi_row = mi_row;
xd->mi[0]->mbmi.mi_col = mi_col;
#endif
#if CONFIG_CFL
xd->cfl->mi_row = mi_row;
xd->cfl->mi_col = mi_col;
#endif
assert(x_mis && y_mis);
for (x = 1; x < x_mis; ++x) xd->mi[x] = xd->mi[0];
int idx = cm->mi_stride;
for (y = 1; y < y_mis; ++y) {
memcpy(&xd->mi[idx], &xd->mi[0], x_mis * sizeof(xd->mi[0]));
idx += cm->mi_stride;
}
set_plane_n4(xd, bw, bh);
set_skip_context(xd, mi_row, mi_col);
// Distance of Mb to the various image edges. These are specified to 8th pel
// as they are always compared to values that are in 1/8th pel units
set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw,
#if CONFIG_DEPENDENT_HORZTILES
cm->dependent_horz_tiles,
#endif // CONFIG_DEPENDENT_HORZTILES
cm->mi_rows, cm->mi_cols);
av1_setup_dst_planes(xd->plane, bsize, get_frame_new_buffer(cm), mi_row,
mi_col);
}
static void decode_mbmi_block(AV1Decoder *const pbi, MACROBLOCKD *const xd,
int mi_row, int mi_col, aom_reader *r,
#if CONFIG_EXT_PARTITION_TYPES
PARTITION_TYPE partition,
#endif // CONFIG_EXT_PARTITION_TYPES
BLOCK_SIZE bsize) {
AV1_COMMON *const cm = &pbi->common;
const int bw = mi_size_wide[bsize];
const int bh = mi_size_high[bsize];
const int x_mis = AOMMIN(bw, cm->mi_cols - mi_col);
const int y_mis = AOMMIN(bh, cm->mi_rows - mi_row);
#if CONFIG_ACCOUNTING
aom_accounting_set_context(&pbi->accounting, mi_col, mi_row);
#endif
set_offsets(cm, xd, bsize, mi_row, mi_col, bw, bh, x_mis, y_mis);
#if CONFIG_EXT_PARTITION_TYPES
xd->mi[0]->mbmi.partition = partition;
#endif
av1_read_mode_info(pbi, xd, mi_row, mi_col, r, x_mis, y_mis);
if (bsize >= BLOCK_8X8 && (cm->subsampling_x || cm->subsampling_y)) {
const BLOCK_SIZE uv_subsize =
ss_size_lookup[bsize][cm->subsampling_x][cm->subsampling_y];
if (uv_subsize == BLOCK_INVALID)
aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME,
"Invalid block size.");
}
int reader_corrupted_flag = aom_reader_has_error(r);
aom_merge_corrupted_flag(&xd->corrupted, reader_corrupted_flag);
}
// Converts a Q3 quantizer lookup from static configuration to the
// actual TX scaling in use
static int dequant_Q3_to_QTX(int q3, int bd) {
// Right now, TX scale in use is still Q3
(void)bd;
return q3;
}
static void decode_token_and_recon_block(AV1Decoder *const pbi,
MACROBLOCKD *const xd, int mi_row,
int mi_col, aom_reader *r,
BLOCK_SIZE bsize) {
AV1_COMMON *const cm = &pbi->common;
const int bw = mi_size_wide[bsize];
const int bh = mi_size_high[bsize];
const int x_mis = AOMMIN(bw, cm->mi_cols - mi_col);
const int y_mis = AOMMIN(bh, cm->mi_rows - mi_row);
set_offsets(cm, xd, bsize, mi_row, mi_col, bw, bh, x_mis, y_mis);
MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
#if CONFIG_CFL
CFL_CTX *const cfl = xd->cfl;
cfl->is_chroma_reference = is_chroma_reference(
mi_row, mi_col, bsize, cfl->subsampling_x, cfl->subsampling_y);
#endif // CONFIG_CFL
if (cm->delta_q_present_flag) {
int i;
for (i = 0; i < MAX_SEGMENTS; i++) {
#if CONFIG_EXT_DELTA_Q
const int current_qindex =
#if CONFIG_Q_SEGMENTATION
av1_get_qindex(&cm->seg, i, i, xd->current_qindex);
#else
av1_get_qindex(&cm->seg, i, xd->current_qindex);
#endif
#else
const int current_qindex = xd->current_qindex;
#endif // CONFIG_EXT_DELTA_Q
int j;
for (j = 0; j < MAX_MB_PLANE; ++j) {
const int dc_delta_q =
j == 0 ? cm->y_dc_delta_q
: (j == 1 ? cm->u_dc_delta_q : cm->v_dc_delta_q);
const int ac_delta_q =
j == 0 ? 0 : (j == 1 ? cm->u_ac_delta_q : cm->v_ac_delta_q);
xd->plane[j].seg_dequant_QTX[i][0] = dequant_Q3_to_QTX(
av1_dc_quant(current_qindex, dc_delta_q, cm->bit_depth),
cm->bit_depth);
xd->plane[j].seg_dequant_QTX[i][1] = dequant_Q3_to_QTX(
av1_ac_quant(current_qindex, ac_delta_q, cm->bit_depth),
cm->bit_depth);
}
}
}
if (mbmi->skip) av1_reset_skip_context(xd, mi_row, mi_col, bsize);
if (!is_inter_block(mbmi)) {
int plane;
for (plane = 0; plane <= 1; ++plane) {
if (mbmi->palette_mode_info.palette_size[plane])
av1_decode_palette_tokens(xd, plane, r);
}
for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
const struct macroblockd_plane *const pd = &xd->plane[plane];
const TX_SIZE tx_size = av1_get_tx_size(plane, xd);
const int stepr = tx_size_high_unit[tx_size];
const int stepc = tx_size_wide_unit[tx_size];
const BLOCK_SIZE plane_bsize =
AOMMAX(BLOCK_4X4, get_plane_block_size(bsize, pd));
int row, col;
const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);
const int max_blocks_high = max_block_high(xd, plane_bsize, plane);
if (!is_chroma_reference(mi_row, mi_col, bsize, pd->subsampling_x,
pd->subsampling_y))
continue;
int blk_row, blk_col;
const BLOCK_SIZE max_unit_bsize = get_plane_block_size(BLOCK_64X64, pd);
int mu_blocks_wide =
block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0];
int mu_blocks_high =
block_size_high[max_unit_bsize] >> tx_size_high_log2[0];
mu_blocks_wide = AOMMIN(max_blocks_wide, mu_blocks_wide);
mu_blocks_high = AOMMIN(max_blocks_high, mu_blocks_high);
for (row = 0; row < max_blocks_high; row += mu_blocks_high) {
const int unit_height = AOMMIN(mu_blocks_high + row, max_blocks_high);
for (col = 0; col < max_blocks_wide; col += mu_blocks_wide) {
const int unit_width = AOMMIN(mu_blocks_wide + col, max_blocks_wide);
for (blk_row = row; blk_row < unit_height; blk_row += stepr)
for (blk_col = col; blk_col < unit_width; blk_col += stepc)
predict_and_reconstruct_intra_block(cm, xd, r, mbmi, plane,
blk_row, blk_col, tx_size);
}
}
}
} else {
int ref;
#if CONFIG_COMPOUND_SINGLEREF
for (ref = 0; ref < 1 + is_inter_anyref_comp_mode(mbmi->mode); ++ref)
#else
for (ref = 0; ref < 1 + has_second_ref(mbmi); ++ref)
#endif // CONFIG_COMPOUND_SINGLEREF
{
const MV_REFERENCE_FRAME frame =
#if CONFIG_COMPOUND_SINGLEREF
has_second_ref(mbmi) ? mbmi->ref_frame[ref] : mbmi->ref_frame[0];
#else
mbmi->ref_frame[ref];
#endif // CONFIG_COMPOUND_SINGLEREF
if (frame < LAST_FRAME) {
#if CONFIG_INTRABC
assert(is_intrabc_block(mbmi));
assert(frame == INTRA_FRAME);
assert(ref == 0);
#else
assert(0);
#endif // CONFIG_INTRABC
} else {
RefBuffer *ref_buf = &cm->frame_refs[frame - LAST_FRAME];
xd->block_refs[ref] = ref_buf;
if ((!av1_is_valid_scale(&ref_buf->sf)))
aom_internal_error(xd->error_info, AOM_CODEC_UNSUP_BITSTREAM,
"Reference frame has invalid dimensions");
av1_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col,
&ref_buf->sf);
}
}
av1_build_inter_predictors_sb(cm, xd, mi_row, mi_col, NULL, bsize);
if (mbmi->motion_mode == OBMC_CAUSAL) {
#if CONFIG_NCOBMC
av1_build_ncobmc_inter_predictors_sb(cm, xd, mi_row, mi_col);
#else
av1_build_obmc_inter_predictors_sb(cm, xd, mi_row, mi_col);
#endif
}
// Reconstruction
if (!mbmi->skip) {
int eobtotal = 0;
int plane;
for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
const struct macroblockd_plane *const pd = &xd->plane[plane];
const BLOCK_SIZE plane_bsize =
AOMMAX(BLOCK_4X4, get_plane_block_size(bsize, pd));
const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);
const int max_blocks_high = max_block_high(xd, plane_bsize, plane);
int row, col;
if (!is_chroma_reference(mi_row, mi_col, bsize, pd->subsampling_x,
pd->subsampling_y))
continue;
const BLOCK_SIZE max_unit_bsize = get_plane_block_size(BLOCK_64X64, pd);
int mu_blocks_wide =
block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0];
int mu_blocks_high =
block_size_high[max_unit_bsize] >> tx_size_high_log2[0];
mu_blocks_wide = AOMMIN(max_blocks_wide, mu_blocks_wide);
mu_blocks_high = AOMMIN(max_blocks_high, mu_blocks_high);
const TX_SIZE max_tx_size = get_vartx_max_txsize(
mbmi, plane_bsize, pd->subsampling_x || pd->subsampling_y);
const int bh_var_tx = tx_size_high_unit[max_tx_size];
const int bw_var_tx = tx_size_wide_unit[max_tx_size];
int block = 0;
int step =
tx_size_wide_unit[max_tx_size] * tx_size_high_unit[max_tx_size];
for (row = 0; row < max_blocks_high; row += mu_blocks_high) {
for (col = 0; col < max_blocks_wide; col += mu_blocks_wide) {
int blk_row, blk_col;
const int unit_height =
AOMMIN(mu_blocks_high + row, max_blocks_high);
const int unit_width =
AOMMIN(mu_blocks_wide + col, max_blocks_wide);
for (blk_row = row; blk_row < unit_height; blk_row += bh_var_tx) {
for (blk_col = col; blk_col < unit_width; blk_col += bw_var_tx) {
decode_reconstruct_tx(cm, xd, r, mbmi, plane, plane_bsize,
blk_row, blk_col, block, max_tx_size,
&eobtotal);
block += step;
}
}
}
}
}
}
}
#if CONFIG_CFL
if (mbmi->uv_mode != UV_CFL_PRED) {
if (!cfl->is_chroma_reference && is_inter_block(mbmi)) {
cfl_store_block(xd, mbmi->sb_type, mbmi->tx_size);
}
}
#endif // CONFIG_CFL
int reader_corrupted_flag = aom_reader_has_error(r);
aom_merge_corrupted_flag(&xd->corrupted, reader_corrupted_flag);
}
#if NC_MODE_INFO
static void detoken_and_recon_sb(AV1Decoder *const pbi, MACROBLOCKD *const xd,
int mi_row, int mi_col, aom_reader *r,
BLOCK_SIZE bsize) {
AV1_COMMON *const cm = &pbi->common;
const int hbs = mi_size_wide[bsize] >> 1;
#if CONFIG_EXT_PARTITION_TYPES
BLOCK_SIZE bsize2 = get_subsize(bsize, PARTITION_SPLIT);
#endif
PARTITION_TYPE partition;
BLOCK_SIZE subsize;
const int has_rows = (mi_row + hbs) < cm->mi_rows;
const int has_cols = (mi_col + hbs) < cm->mi_cols;
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;
partition = get_partition(cm, mi_row, mi_col, bsize);
subsize = subsize_lookup[partition][bsize];
switch (partition) {
case PARTITION_NONE:
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, bsize);
break;
case PARTITION_HORZ:
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, subsize);
if (has_rows)
decode_token_and_recon_block(pbi, xd, mi_row + hbs, mi_col, r, subsize);
break;
case PARTITION_VERT:
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, subsize);
if (has_cols)
decode_token_and_recon_block(pbi, xd, mi_row, mi_col + hbs, r, subsize);
break;
case PARTITION_SPLIT:
detoken_and_recon_sb(pbi, xd, mi_row, mi_col, r, subsize);
detoken_and_recon_sb(pbi, xd, mi_row, mi_col + hbs, r, subsize);
detoken_and_recon_sb(pbi, xd, mi_row + hbs, mi_col, r, subsize);
detoken_and_recon_sb(pbi, xd, mi_row + hbs, mi_col + hbs, r, subsize);
break;
#if CONFIG_EXT_PARTITION_TYPES
#if CONFIG_EXT_PARTITION_TYPES_AB
#error NC_MODE_INFO+MOTION_VAR not yet supported for new HORZ/VERT_AB partitions
#endif
case PARTITION_HORZ_A:
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, bsize2);
decode_token_and_recon_block(pbi, xd, mi_row, mi_col + hbs, r, bsize2);
decode_token_and_recon_block(pbi, xd, mi_row + hbs, mi_col, r, subsize);
break;
case PARTITION_HORZ_B:
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, subsize);
decode_token_and_recon_block(pbi, xd, mi_row + hbs, mi_col, r, bsize2);
decode_token_and_recon_block(pbi, xd, mi_row + hbs, mi_col + hbs, r,
bsize2);
break;
case PARTITION_VERT_A:
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, bsize2);
decode_token_and_recon_block(pbi, xd, mi_row + hbs, mi_col, r, bsize2);
decode_token_and_recon_block(pbi, xd, mi_row, mi_col + hbs, r, subsize);
break;
case PARTITION_VERT_B:
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, subsize);
decode_token_and_recon_block(pbi, xd, mi_row, mi_col + hbs, r, bsize2);
decode_token_and_recon_block(pbi, xd, mi_row + hbs, mi_col + hbs, r,
bsize2);
break;
#endif
default: assert(0 && "Invalid partition type");
}
}
#endif
static void decode_block(AV1Decoder *const pbi, MACROBLOCKD *const xd,
int mi_row, int mi_col, aom_reader *r,
#if CONFIG_EXT_PARTITION_TYPES
PARTITION_TYPE partition,
#endif // CONFIG_EXT_PARTITION_TYPES
BLOCK_SIZE bsize) {
decode_mbmi_block(pbi, xd, mi_row, mi_col, r,
#if CONFIG_EXT_PARTITION_TYPES
partition,
#endif
bsize);
#if !(NC_MODE_INFO)
decode_token_and_recon_block(pbi, xd, mi_row, mi_col, r, bsize);
#endif
}
static PARTITION_TYPE read_partition(AV1_COMMON *cm, MACROBLOCKD *xd,
int mi_row, int mi_col, aom_reader *r,
int has_rows, int has_cols,
BLOCK_SIZE bsize) {
#if CONFIG_UNPOISON_PARTITION_CTX
const int ctx =
partition_plane_context(xd, mi_row, mi_col, has_rows, has_cols, bsize);
#else
const int ctx = partition_plane_context(xd, mi_row, mi_col, bsize);
#endif
PARTITION_TYPE p;
FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
(void)cm;
aom_cdf_prob *partition_cdf = (ctx >= 0) ? ec_ctx->partition_cdf[ctx] : NULL;
if (has_rows && has_cols) {
#if CONFIG_EXT_PARTITION_TYPES
const int num_partition_types =
(mi_width_log2_lookup[bsize] > mi_width_log2_lookup[BLOCK_8X8])
? EXT_PARTITION_TYPES
: PARTITION_TYPES;
#else
const int num_partition_types = PARTITION_TYPES;
#endif // CONFIG_EXT_PARTITION_TYPES
p = (PARTITION_TYPE)aom_read_symbol(r, partition_cdf, num_partition_types,
ACCT_STR);
} else if (!has_rows && has_cols) {
assert(bsize > BLOCK_8X8);
aom_cdf_prob cdf[2];
partition_gather_vert_alike(cdf, partition_cdf);
assert(cdf[1] == AOM_ICDF(CDF_PROB_TOP));
p = aom_read_cdf(r, cdf, 2, ACCT_STR) ? PARTITION_SPLIT : PARTITION_HORZ;
// gather cols
} else if (has_rows && !has_cols) {
assert(bsize > BLOCK_8X8);
aom_cdf_prob cdf[2];
partition_gather_horz_alike(cdf, partition_cdf);
assert(cdf[1] == AOM_ICDF(CDF_PROB_TOP));
p = aom_read_cdf(r, cdf, 2, ACCT_STR) ? PARTITION_SPLIT : PARTITION_VERT;
} else {
p = PARTITION_SPLIT;
}
return p;
}
// TODO(slavarnway): eliminate bsize and subsize in future commits
static void decode_partition(AV1Decoder *const pbi, MACROBLOCKD *const xd,
int mi_row, int mi_col, aom_reader *r,
BLOCK_SIZE bsize) {
AV1_COMMON *const cm = &pbi->common;
const int num_8x8_wh = mi_size_wide[bsize];
const int hbs = num_8x8_wh >> 1;
#if CONFIG_EXT_PARTITION_TYPES && CONFIG_EXT_PARTITION_TYPES_AB
const int qbs = num_8x8_wh >> 2;
#endif
PARTITION_TYPE partition;
BLOCK_SIZE subsize;
#if CONFIG_EXT_PARTITION_TYPES
const int quarter_step = num_8x8_wh / 4;
int i;
#if !CONFIG_EXT_PARTITION_TYPES_AB
BLOCK_SIZE bsize2 = get_subsize(bsize, PARTITION_SPLIT);
#endif
#endif
const int has_rows = (mi_row + hbs) < cm->mi_rows;
const int has_cols = (mi_col + hbs) < cm->mi_cols;
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;
partition = (bsize < BLOCK_8X8) ? PARTITION_NONE
: read_partition(cm, xd, mi_row, mi_col, r,
has_rows, has_cols, bsize);
subsize = subsize_lookup[partition][bsize]; // get_subsize(bsize, partition);
// Check the bitstream is conformant: if there is subsampling on the
// chroma planes, subsize must subsample to a valid block size.
const struct macroblockd_plane *const pd_u = &xd->plane[1];
if (get_plane_block_size(subsize, pd_u) == BLOCK_INVALID) {
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Block size %dx%d invalid with this subsampling mode",
block_size_wide[subsize], block_size_high[subsize]);
}
#define DEC_BLOCK_STX_ARG
#if CONFIG_EXT_PARTITION_TYPES
#define DEC_BLOCK_EPT_ARG partition,
#else
#define DEC_BLOCK_EPT_ARG
#endif
#define DEC_BLOCK(db_r, db_c, db_subsize) \
decode_block(pbi, xd, DEC_BLOCK_STX_ARG(db_r), (db_c), r, \
DEC_BLOCK_EPT_ARG(db_subsize))
#define DEC_PARTITION(db_r, db_c, db_subsize) \
decode_partition(pbi, xd, DEC_BLOCK_STX_ARG(db_r), (db_c), r, (db_subsize))
switch (partition) {
case PARTITION_NONE: DEC_BLOCK(mi_row, mi_col, subsize); break;
case PARTITION_HORZ:
DEC_BLOCK(mi_row, mi_col, subsize);
if (has_rows) DEC_BLOCK(mi_row + hbs, mi_col, subsize);
break;
case PARTITION_VERT:
DEC_BLOCK(mi_row, mi_col, subsize);
if (has_cols) DEC_BLOCK(mi_row, mi_col + hbs, subsize);
break;
case PARTITION_SPLIT:
DEC_PARTITION(mi_row, mi_col, subsize);
DEC_PARTITION(mi_row, mi_col + hbs, subsize);
DEC_PARTITION(mi_row + hbs, mi_col, subsize);
DEC_PARTITION(mi_row + hbs, mi_col + hbs, subsize);
break;
#if CONFIG_EXT_PARTITION_TYPES
#if CONFIG_EXT_PARTITION_TYPES_AB
case PARTITION_HORZ_A:
DEC_BLOCK(mi_row, mi_col, get_subsize(bsize, PARTITION_HORZ_4));
DEC_BLOCK(mi_row + qbs, mi_col, get_subsize(bsize, PARTITION_HORZ_4));
DEC_BLOCK(mi_row + hbs, mi_col, subsize);
break;
case PARTITION_HORZ_B:
DEC_BLOCK(mi_row, mi_col, subsize);
DEC_BLOCK(mi_row + hbs, mi_col, get_subsize(bsize, PARTITION_HORZ_4));
if (mi_row + 3 * qbs < cm->mi_rows)
DEC_BLOCK(mi_row + 3 * qbs, mi_col,
get_subsize(bsize, PARTITION_HORZ_4));
break;
case PARTITION_VERT_A:
DEC_BLOCK(mi_row, mi_col, get_subsize(bsize, PARTITION_VERT_4));
DEC_BLOCK(mi_row, mi_col + qbs, get_subsize(bsize, PARTITION_VERT_4));
DEC_BLOCK(mi_row, mi_col + hbs, subsize);
break;
case PARTITION_VERT_B:
DEC_BLOCK(mi_row, mi_col, subsize);
DEC_BLOCK(mi_row, mi_col + hbs, get_subsize(bsize, PARTITION_VERT_4));
if (mi_col + 3 * qbs < cm->mi_cols)
DEC_BLOCK(mi_row, mi_col + 3 * qbs,
get_subsize(bsize, PARTITION_VERT_4));
break;
#else
case PARTITION_HORZ_A:
DEC_BLOCK(mi_row, mi_col, bsize2);
DEC_BLOCK(mi_row, mi_col + hbs, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col, subsize);
break;
case PARTITION_HORZ_B:
DEC_BLOCK(mi_row, mi_col, subsize);
DEC_BLOCK(mi_row + hbs, mi_col, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col + hbs, bsize2);
break;
case PARTITION_VERT_A:
DEC_BLOCK(mi_row, mi_col, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col, bsize2);
DEC_BLOCK(mi_row, mi_col + hbs, subsize);
break;
case PARTITION_VERT_B:
DEC_BLOCK(mi_row, mi_col, subsize);
DEC_BLOCK(mi_row, mi_col + hbs, bsize2);
DEC_BLOCK(mi_row + hbs, mi_col + hbs, bsize2);
break;
#endif
case PARTITION_HORZ_4:
for (i = 0; i < 4; ++i) {
int this_mi_row = mi_row + i * quarter_step;
if (i > 0 && this_mi_row >= cm->mi_rows) break;
DEC_BLOCK(this_mi_row, mi_col, subsize);
}
break;
case PARTITION_VERT_4:
for (i = 0; i < 4; ++i) {
int this_mi_col = mi_col + i * quarter_step;
if (i > 0 && this_mi_col >= cm->mi_cols) break;
DEC_BLOCK(mi_row, this_mi_col, subsize);
}
break;
#endif // CONFIG_EXT_PARTITION_TYPES
default: assert(0 && "Invalid partition type");
}
#undef DEC_PARTITION
#undef DEC_BLOCK
#undef DEC_BLOCK_EPT_ARG
#undef DEC_BLOCK_STX_ARG
#if CONFIG_EXT_PARTITION_TYPES
update_ext_partition_context(xd, mi_row, mi_col, subsize, bsize, partition);
#else
// update partition context
if (bsize >= BLOCK_8X8 &&
(bsize == BLOCK_8X8 || partition != PARTITION_SPLIT))
update_partition_context(xd, mi_row, mi_col, subsize, bsize);
#endif // CONFIG_EXT_PARTITION_TYPES
#if CONFIG_LPF_SB
if (bsize == cm->sb_size) {
int filt_lvl;
if (mi_row == 0 && mi_col == 0) {
filt_lvl = aom_read_literal(r, 6, ACCT_STR);
cm->mi_grid_visible[0]->mbmi.reuse_sb_lvl = 0;
cm->mi_grid_visible[0]->mbmi.delta = 0;
cm->mi_grid_visible[0]->mbmi.sign = 0;
} else {
int prev_mi_row, prev_mi_col;
if (mi_col - MAX_MIB_SIZE < 0) {
prev_mi_row = mi_row - MAX_MIB_SIZE;
prev_mi_col = mi_col;
} else {
prev_mi_row = mi_row;
prev_mi_col = mi_col - MAX_MIB_SIZE;
}
MB_MODE_INFO *curr_mbmi =
&cm->mi_grid_visible[mi_row * cm->mi_stride + mi_col]->mbmi;
MB_MODE_INFO *prev_mbmi =
&cm->mi_grid_visible[prev_mi_row * cm->mi_stride + prev_mi_col]->mbmi;
const uint8_t prev_lvl = prev_mbmi->filt_lvl;
const int reuse_ctx = prev_mbmi->reuse_sb_lvl;
const int reuse_prev_lvl = aom_read_symbol(
r, xd->tile_ctx->lpf_reuse_cdf[reuse_ctx], 2, ACCT_STR);
curr_mbmi->reuse_sb_lvl = reuse_prev_lvl;
if (reuse_prev_lvl) {
filt_lvl = prev_lvl;
curr_mbmi->delta = 0;
curr_mbmi->sign = 0;
} else {
const int delta_ctx = prev_mbmi->delta;
unsigned int delta = aom_read_symbol(
r, xd->tile_ctx->lpf_delta_cdf[delta_ctx], DELTA_RANGE, ACCT_STR);
curr_mbmi->delta = delta;
delta *= LPF_STEP;
if (delta) {
const int sign_ctx = prev_mbmi->sign;
const int sign = aom_read_symbol(
r, xd->tile_ctx->lpf_sign_cdf[reuse_ctx][sign_ctx], 2, ACCT_STR);
curr_mbmi->sign = sign;
filt_lvl = sign ? prev_lvl + delta : prev_lvl - delta;
} else {
filt_lvl = prev_lvl;
curr_mbmi->sign = 0;
}
}
}
av1_loop_filter_sb_level_init(cm, mi_row, mi_col, filt_lvl);
}
#endif
#if CONFIG_CDEF
if (bsize == cm->sb_size) {
int width_step = mi_size_wide[BLOCK_64X64];
int height_step = mi_size_wide[BLOCK_64X64];
int w, h;
for (h = 0; (h < mi_size_high[cm->sb_size]) && (mi_row + h < cm->mi_rows);
h += height_step) {
for (w = 0; (w < mi_size_wide[cm->sb_size]) && (mi_col + w < cm->mi_cols);
w += width_step) {
if (!cm->all_lossless && !sb_all_skip(cm, mi_row + h, mi_col + w))
cm->mi_grid_visible[(mi_row + h) * cm->mi_stride + (mi_col + w)]
->mbmi.cdef_strength =
aom_read_literal(r, cm->cdef_bits, ACCT_STR);
else
cm->mi_grid_visible[(mi_row + h) * cm->mi_stride + (mi_col + w)]
->mbmi.cdef_strength = -1;
}
}
}
#endif // CONFIG_CDEF
#if CONFIG_LOOP_RESTORATION
for (int plane = 0; plane < MAX_MB_PLANE; ++plane) {
int rcol0, rcol1, rrow0, rrow1, tile_tl_idx;
if (av1_loop_restoration_corners_in_sb(cm, plane, mi_row, mi_col, bsize,
&rcol0, &rcol1, &rrow0, &rrow1,
&tile_tl_idx)) {
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 rtile_idx = tile_tl_idx + rcol + rrow * rstride;
loop_restoration_read_sb_coeffs(cm, xd, r, plane, rtile_idx);
}
}
}
}
#endif
}
static void setup_bool_decoder(const uint8_t *data, const uint8_t *data_end,
const size_t read_size,
struct aom_internal_error_info *error_info,
aom_reader *r, uint8_t allow_update_cdf,
#if CONFIG_ANS && ANS_MAX_SYMBOLS
int window_size,
#endif // CONFIG_ANS && ANS_MAX_SYMBOLS
aom_decrypt_cb decrypt_cb, void *decrypt_state) {
// Validate the calculated partition length. If the buffer
// described by the partition can't be fully read, then restrict
// it to the portion that can be (for EC mode) or throw an error.
if (!read_is_valid(data, read_size, data_end))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile length");
#if CONFIG_ANS && ANS_MAX_SYMBOLS
r->window_size = window_size;
#endif
if (aom_reader_init(r, data, read_size, decrypt_cb, decrypt_state))
aom_internal_error(error_info, AOM_CODEC_MEM_ERROR,
"Failed to allocate bool decoder %d", 1);
r->allow_update_cdf = allow_update_cdf;
}
static void setup_segmentation(AV1_COMMON *const cm,
struct aom_read_bit_buffer *rb) {
struct segmentation *const seg = &cm->seg;
int i, j;
seg->update_map = 0;
seg->update_data = 0;
seg->temporal_update = 0;
seg->enabled = aom_rb_read_bit(rb);
if (!seg->enabled) return;
// Segmentation map update
if (frame_is_intra_only(cm) || cm->error_resilient_mode) {
seg->update_map = 1;
} else {
seg->update_map = aom_rb_read_bit(rb);
}
if (seg->update_map) {
if (frame_is_intra_only(cm) || cm->error_resilient_mode) {
seg->temporal_update = 0;
} else {
seg->temporal_update = aom_rb_read_bit(rb);
}
}
// Segmentation data update
seg->update_data = aom_rb_read_bit(rb);
if (seg->update_data) {
av1_clearall_segfeatures(seg);
for (i = 0; i < MAX_SEGMENTS; i++) {
for (j = 0; j < SEG_LVL_MAX; j++) {
int data = 0;
const int feature_enabled = aom_rb_read_bit(rb);
if (feature_enabled) {
av1_enable_segfeature(seg, i, j);
data = decode_unsigned_max(rb, av1_seg_feature_data_max(j));
if (av1_is_segfeature_signed(j))
data = aom_rb_read_bit(rb) ? -data : data;
}
av1_set_segdata(seg, i, j, data);
}
}
}
}
#if CONFIG_Q_SEGMENTATION
static void setup_q_segmentation(AV1_COMMON *const cm,
struct aom_read_bit_buffer *rb) {
int i;
struct segmentation *const seg = &cm->seg;
for (i = 0; i < MAX_SEGMENTS; i++) {
if (segfeature_active(seg, i, SEG_LVL_ALT_Q)) {
seg->q_lvls = 0;
return;
}
}
if (!aom_rb_read_bit(rb)) return;
seg->q_lvls = decode_unsigned_max(rb, MAX_SEGMENTS);
for (i = 0; i < seg->q_lvls; i++) {
int val = decode_unsigned_max(rb, MAXQ);
val *= 1 - 2 * aom_rb_read_bit(rb);
seg->q_delta[i] = val;
}
}
#endif
#if CONFIG_LOOP_RESTORATION
static void decode_restoration_mode(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
#if CONFIG_INTRABC
if (cm->allow_intrabc && NO_FILTER_FOR_IBC) return;
#endif // CONFIG_INTRABC
for (int p = 0; p < MAX_MB_PLANE; ++p) {
RestorationInfo *rsi = &cm->rst_info[p];
if (aom_rb_read_bit(rb)) {
rsi->frame_restoration_type =
aom_rb_read_bit(rb) ? RESTORE_SGRPROJ : RESTORE_WIENER;
} else {
rsi->frame_restoration_type =
aom_rb_read_bit(rb) ? RESTORE_SWITCHABLE : RESTORE_NONE;
}
}
if (cm->rst_info[0].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[1].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[2].frame_restoration_type != RESTORE_NONE) {
const int qsize = RESTORATION_TILESIZE_MAX >> 2;
for (int p = 0; p < MAX_MB_PLANE; ++p)
cm->rst_info[p].restoration_unit_size = qsize;
RestorationInfo *rsi = &cm->rst_info[0];
rsi->restoration_unit_size <<= aom_rb_read_bit(rb);
if (rsi->restoration_unit_size != qsize) {
rsi->restoration_unit_size <<= aom_rb_read_bit(rb);
}
} else {
const int size = RESTORATION_TILESIZE_MAX;
for (int p = 0; p < MAX_MB_PLANE; ++p)
cm->rst_info[p].restoration_unit_size = size;
}
int s = AOMMIN(cm->subsampling_x, cm->subsampling_y);
if (s && (cm->rst_info[1].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[2].frame_restoration_type != RESTORE_NONE)) {
cm->rst_info[1].restoration_unit_size =
cm->rst_info[0].restoration_unit_size >> (aom_rb_read_bit(rb) * s);
} else {
cm->rst_info[1].restoration_unit_size =
cm->rst_info[0].restoration_unit_size;
}
cm->rst_info[2].restoration_unit_size = cm->rst_info[1].restoration_unit_size;
}
static void read_wiener_filter(int wiener_win, WienerInfo *wiener_info,
WienerInfo *ref_wiener_info, aom_reader *rb) {
memset(wiener_info->vfilter, 0, sizeof(wiener_info->vfilter));
memset(wiener_info->hfilter, 0, sizeof(wiener_info->hfilter));
if (wiener_win == WIENER_WIN)
wiener_info->vfilter[0] = wiener_info->vfilter[WIENER_WIN - 1] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1,
WIENER_FILT_TAP0_SUBEXP_K,
ref_wiener_info->vfilter[0] - WIENER_FILT_TAP0_MINV, ACCT_STR) +
WIENER_FILT_TAP0_MINV;
else
wiener_info->vfilter[0] = wiener_info->vfilter[WIENER_WIN - 1] = 0;
wiener_info->vfilter[1] = wiener_info->vfilter[WIENER_WIN - 2] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1,
WIENER_FILT_TAP1_SUBEXP_K,
ref_wiener_info->vfilter[1] - WIENER_FILT_TAP1_MINV, ACCT_STR) +
WIENER_FILT_TAP1_MINV;
wiener_info->vfilter[2] = wiener_info->vfilter[WIENER_WIN - 3] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1,
WIENER_FILT_TAP2_SUBEXP_K,
ref_wiener_info->vfilter[2] - WIENER_FILT_TAP2_MINV, ACCT_STR) +
WIENER_FILT_TAP2_MINV;
// The central element has an implicit +WIENER_FILT_STEP
wiener_info->vfilter[WIENER_HALFWIN] =
-2 * (wiener_info->vfilter[0] + wiener_info->vfilter[1] +
wiener_info->vfilter[2]);
if (wiener_win == WIENER_WIN)
wiener_info->hfilter[0] = wiener_info->hfilter[WIENER_WIN - 1] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP0_MAXV - WIENER_FILT_TAP0_MINV + 1,
WIENER_FILT_TAP0_SUBEXP_K,
ref_wiener_info->hfilter[0] - WIENER_FILT_TAP0_MINV, ACCT_STR) +
WIENER_FILT_TAP0_MINV;
else
wiener_info->hfilter[0] = wiener_info->hfilter[WIENER_WIN - 1] = 0;
wiener_info->hfilter[1] = wiener_info->hfilter[WIENER_WIN - 2] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP1_MAXV - WIENER_FILT_TAP1_MINV + 1,
WIENER_FILT_TAP1_SUBEXP_K,
ref_wiener_info->hfilter[1] - WIENER_FILT_TAP1_MINV, ACCT_STR) +
WIENER_FILT_TAP1_MINV;
wiener_info->hfilter[2] = wiener_info->hfilter[WIENER_WIN - 3] =
aom_read_primitive_refsubexpfin(
rb, WIENER_FILT_TAP2_MAXV - WIENER_FILT_TAP2_MINV + 1,
WIENER_FILT_TAP2_SUBEXP_K,
ref_wiener_info->hfilter[2] - WIENER_FILT_TAP2_MINV, ACCT_STR) +
WIENER_FILT_TAP2_MINV;
// The central element has an implicit +WIENER_FILT_STEP
wiener_info->hfilter[WIENER_HALFWIN] =
-2 * (wiener_info->hfilter[0] + wiener_info->hfilter[1] +
wiener_info->hfilter[2]);
memcpy(ref_wiener_info, wiener_info, sizeof(*wiener_info));
}
static void read_sgrproj_filter(SgrprojInfo *sgrproj_info,
SgrprojInfo *ref_sgrproj_info, aom_reader *rb) {
sgrproj_info->ep = aom_read_literal(rb, SGRPROJ_PARAMS_BITS, ACCT_STR);
sgrproj_info->xqd[0] =
aom_read_primitive_refsubexpfin(
rb, SGRPROJ_PRJ_MAX0 - SGRPROJ_PRJ_MIN0 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[0] - SGRPROJ_PRJ_MIN0, ACCT_STR) +
SGRPROJ_PRJ_MIN0;
sgrproj_info->xqd[1] =
aom_read_primitive_refsubexpfin(
rb, SGRPROJ_PRJ_MAX1 - SGRPROJ_PRJ_MIN1 + 1, SGRPROJ_PRJ_SUBEXP_K,
ref_sgrproj_info->xqd[1] - SGRPROJ_PRJ_MIN1, ACCT_STR) +
SGRPROJ_PRJ_MIN1;
memcpy(ref_sgrproj_info, sgrproj_info, sizeof(*sgrproj_info));
}
static void loop_restoration_read_sb_coeffs(const AV1_COMMON *const cm,
MACROBLOCKD *xd,
aom_reader *const r, int plane,
int rtile_idx) {
const RestorationInfo *rsi = &cm->rst_info[plane];
RestorationUnitInfo *rui = &rsi->unit_info[rtile_idx];
if (rsi->frame_restoration_type == RESTORE_NONE) return;
const int wiener_win = (plane > 0) ? WIENER_WIN_CHROMA : WIENER_WIN;
WienerInfo *wiener_info = xd->wiener_info + plane;
SgrprojInfo *sgrproj_info = xd->sgrproj_info + plane;
if (rsi->frame_restoration_type == RESTORE_SWITCHABLE) {
rui->restoration_type =
aom_read_symbol(r, xd->tile_ctx->switchable_restore_cdf,
RESTORE_SWITCHABLE_TYPES, ACCT_STR);
switch (rui->restoration_type) {
case RESTORE_WIENER:
read_wiener_filter(wiener_win, &rui->wiener_info, wiener_info, r);
break;
case RESTORE_SGRPROJ:
read_sgrproj_filter(&rui->sgrproj_info, sgrproj_info, r);
break;
default: assert(rui->restoration_type == RESTORE_NONE); break;
}
} else if (rsi->frame_restoration_type == RESTORE_WIENER) {
#if CONFIG_NEW_MULTISYMBOL
if (aom_read_symbol(r, xd->tile_ctx->wiener_restore_cdf, 2, ACCT_STR)) {
#else
if (aom_read(r, RESTORE_NONE_WIENER_PROB, ACCT_STR)) {
#endif // CONFIG_NEW_MULTISYMBOL
rui->restoration_type = RESTORE_WIENER;
read_wiener_filter(wiener_win, &rui->wiener_info, wiener_info, r);
} else {
rui->restoration_type = RESTORE_NONE;
}
} else if (rsi->frame_restoration_type == RESTORE_SGRPROJ) {
#if CONFIG_NEW_MULTISYMBOL
if (aom_read_symbol(r, xd->tile_ctx->sgrproj_restore_cdf, 2, ACCT_STR)) {
#else
if (aom_read(r, RESTORE_NONE_SGRPROJ_PROB, ACCT_STR)) {
#endif // CONFIG_NEW_MULTISYMBOL
rui->restoration_type = RESTORE_SGRPROJ;
read_sgrproj_filter(&rui->sgrproj_info, sgrproj_info, r);
} else {
rui->restoration_type = RESTORE_NONE;
}
}
}
#endif // CONFIG_LOOP_RESTORATION
static void setup_loopfilter(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
#if CONFIG_INTRABC
if (cm->allow_intrabc && NO_FILTER_FOR_IBC) return;
#endif // CONFIG_INTRABC
struct loopfilter *lf = &cm->lf;
#if !CONFIG_LPF_SB
#if CONFIG_LOOPFILTER_LEVEL
lf->filter_level[0] = aom_rb_read_literal(rb, 6);
lf->filter_level[1] = aom_rb_read_literal(rb, 6);
if (lf->filter_level[0] || lf->filter_level[1]) {
lf->filter_level_u = aom_rb_read_literal(rb, 6);
lf->filter_level_v = aom_rb_read_literal(rb, 6);
}
#else
lf->filter_level = aom_rb_read_literal(rb, 6);
#endif
#endif // CONFIG_LPF_SB
lf->sharpness_level = aom_rb_read_literal(rb, 3);
// Read in loop filter deltas applied at the MB level based on mode or ref
// frame.
lf->mode_ref_delta_update = 0;
lf->mode_ref_delta_enabled = aom_rb_read_bit(rb);
if (lf->mode_ref_delta_enabled) {
lf->mode_ref_delta_update = aom_rb_read_bit(rb);
if (lf->mode_ref_delta_update) {
int i;
for (i = 0; i < TOTAL_REFS_PER_FRAME; i++)
if (aom_rb_read_bit(rb))
lf->ref_deltas[i] = aom_rb_read_inv_signed_literal(rb, 6);
for (i = 0; i < MAX_MODE_LF_DELTAS; i++)
if (aom_rb_read_bit(rb))
lf->mode_deltas[i] = aom_rb_read_inv_signed_literal(rb, 6);
}
}
}
#if CONFIG_CDEF
static void setup_cdef(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
#if CONFIG_INTRABC
if (cm->allow_intrabc && NO_FILTER_FOR_IBC) return;
#endif // CONFIG_INTRABC
int i;
#if CONFIG_CDEF_SINGLEPASS
cm->cdef_pri_damping = cm->cdef_sec_damping = aom_rb_read_literal(rb, 2) + 3;
#else
cm->cdef_pri_damping = aom_rb_read_literal(rb, 1) + 5;
cm->cdef_sec_damping = aom_rb_read_literal(rb, 2) + 3;
#endif
cm->cdef_bits = aom_rb_read_literal(rb, 2);
cm->nb_cdef_strengths = 1 << cm->cdef_bits;
for (i = 0; i < cm->nb_cdef_strengths; i++) {
cm->cdef_strengths[i] = aom_rb_read_literal(rb, CDEF_STRENGTH_BITS);
cm->cdef_uv_strengths[i] = cm->subsampling_x == cm->subsampling_y
? aom_rb_read_literal(rb, CDEF_STRENGTH_BITS)
: 0;
}
}
#endif // CONFIG_CDEF
static INLINE int read_delta_q(struct aom_read_bit_buffer *rb) {
return aom_rb_read_bit(rb) ? aom_rb_read_inv_signed_literal(rb, 6) : 0;
}
static void setup_quantization(AV1_COMMON *const cm,
struct aom_read_bit_buffer *rb) {
cm->base_qindex = aom_rb_read_literal(rb, QINDEX_BITS);
cm->y_dc_delta_q = read_delta_q(rb);
cm->u_dc_delta_q = read_delta_q(rb);
cm->u_ac_delta_q = read_delta_q(rb);
cm->v_dc_delta_q = cm->u_dc_delta_q;
cm->v_ac_delta_q = cm->u_ac_delta_q;
cm->dequant_bit_depth = cm->bit_depth;
#if CONFIG_AOM_QM
cm->using_qmatrix = aom_rb_read_bit(rb);
if (cm->using_qmatrix) {
cm->min_qmlevel = aom_rb_read_literal(rb, QM_LEVEL_BITS);
cm->max_qmlevel = aom_rb_read_literal(rb, QM_LEVEL_BITS);
} else {
cm->min_qmlevel = 0;
cm->max_qmlevel = 0;
}
#endif
}
// Build y/uv dequant values based on segmentation.
static void setup_segmentation_dequant(AV1_COMMON *const cm) {
#if CONFIG_AOM_QM
const int using_qm = cm->using_qmatrix;
const int minqm = cm->min_qmlevel;
const int maxqm = cm->max_qmlevel;
#endif
// When segmentation is disabled, only the first value is used. The
// remaining are don't cares.
const int max_segments = cm->seg.enabled ? MAX_SEGMENTS : 1;
for (int i = 0; i < max_segments; ++i) {
#if CONFIG_Q_SEGMENTATION
const int qindex = av1_get_qindex(&cm->seg, i, i, cm->base_qindex);
#else
const int qindex = av1_get_qindex(&cm->seg, i, cm->base_qindex);
#endif
cm->y_dequant_QTX[i][0] = dequant_Q3_to_QTX(
av1_dc_quant(qindex, cm->y_dc_delta_q, cm->bit_depth), cm->bit_depth);
cm->y_dequant_QTX[i][1] = dequant_Q3_to_QTX(
av1_ac_quant(qindex, 0, cm->bit_depth), cm->bit_depth);
cm->u_dequant_QTX[i][0] = dequant_Q3_to_QTX(
av1_dc_quant(qindex, cm->u_dc_delta_q, cm->bit_depth), cm->bit_depth);
cm->u_dequant_QTX[i][1] = dequant_Q3_to_QTX(
av1_ac_quant(qindex, cm->u_ac_delta_q, cm->bit_depth), cm->bit_depth);
cm->v_dequant_QTX[i][0] = dequant_Q3_to_QTX(
av1_dc_quant(qindex, cm->v_dc_delta_q, cm->bit_depth), cm->bit_depth);
cm->v_dequant_QTX[i][1] = dequant_Q3_to_QTX(
av1_ac_quant(qindex, cm->v_ac_delta_q, cm->bit_depth), cm->bit_depth);
#if CONFIG_AOM_QM
const int lossless = qindex == 0 && cm->y_dc_delta_q == 0 &&
cm->u_dc_delta_q == 0 && cm->u_ac_delta_q == 0 &&
cm->v_dc_delta_q == 0 && cm->v_ac_delta_q == 0;
// NB: depends on base index so there is only 1 set per frame
// No quant weighting when lossless or signalled not using QM
const int qmlevel = (lossless || using_qm == 0)
? NUM_QM_LEVELS - 1
: aom_get_qmlevel(cm->base_qindex, minqm, maxqm);
for (int j = 0; j < TX_SIZES_ALL; ++j) {
cm->y_iqmatrix[i][j] = aom_iqmatrix(cm, qmlevel, 0, j);
cm->uv_iqmatrix[i][j] = aom_iqmatrix(cm, qmlevel, 1, j);
}
#endif // CONFIG_AOM_QM
#if CONFIG_NEW_QUANT
for (int dq = 0; dq < QUANT_PROFILES; dq++) {
for (int b = 0; b < COEF_BANDS; ++b) {
av1_get_dequant_val_nuq(cm->y_dequant_QTX[i][b != 0], b,
cm->y_dequant_nuq_QTX[i][dq][b], NULL, dq);
av1_get_dequant_val_nuq(cm->u_dequant_QTX[i][b != 0], b,
cm->u_dequant_nuq_QTX[i][dq][b], NULL, dq);
av1_get_dequant_val_nuq(cm->v_dequant_QTX[i][b != 0], b,
cm->v_dequant_nuq_QTX[i][dq][b], NULL, dq);
}
}
#endif // CONFIG_NEW_QUANT
}
}
static InterpFilter read_frame_interp_filter(struct aom_read_bit_buffer *rb) {
return aom_rb_read_bit(rb) ? SWITCHABLE
: aom_rb_read_literal(rb, LOG_SWITCHABLE_FILTERS);
}
static void setup_render_size(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
#if CONFIG_FRAME_SUPERRES
cm->render_width = cm->superres_upscaled_width;
cm->render_height = cm->superres_upscaled_height;
#else
cm->render_width = cm->width;
cm->render_height = cm->height;
#endif // CONFIG_FRAME_SUPERRES
if (aom_rb_read_bit(rb))
#if CONFIG_FRAME_SIZE
av1_read_frame_size(rb, 16, 16, &cm->render_width, &cm->render_height);
#else
av1_read_frame_size(rb, &cm->render_width, &cm->render_height);
#endif
}
#if CONFIG_FRAME_SUPERRES
// TODO(afergs): make "struct aom_read_bit_buffer *const rb"?
static void setup_superres(AV1_COMMON *const cm, struct aom_read_bit_buffer *rb,
int *width, int *height) {
cm->superres_upscaled_width = *width;
cm->superres_upscaled_height = *height;
if (aom_rb_read_bit(rb)) {
cm->superres_scale_denominator =
(uint8_t)aom_rb_read_literal(rb, SUPERRES_SCALE_BITS);
cm->superres_scale_denominator += SUPERRES_SCALE_DENOMINATOR_MIN;
// Don't edit cm->width or cm->height directly, or the buffers won't get
// resized correctly
av1_calculate_scaled_superres_size(width, height,
cm->superres_scale_denominator);
} else {
// 1:1 scaling - ie. no scaling, scale not provided
cm->superres_scale_denominator = SCALE_NUMERATOR;
}
}
#endif // CONFIG_FRAME_SUPERRES
static void resize_context_buffers(AV1_COMMON *cm, int width, int height) {
#if CONFIG_SIZE_LIMIT
if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Dimensions of %dx%d beyond allowed size of %dx%d.",
width, height, DECODE_WIDTH_LIMIT, DECODE_HEIGHT_LIMIT);
#endif
if (cm->width != width || cm->height != height) {
const int new_mi_rows =
ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2) >> MI_SIZE_LOG2;
const int new_mi_cols =
ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2) >> MI_SIZE_LOG2;
// Allocations in av1_alloc_context_buffers() depend on individual
// dimensions as well as the overall size.
if (new_mi_cols > cm->mi_cols || new_mi_rows > cm->mi_rows) {
if (av1_alloc_context_buffers(cm, width, height))
aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate context buffers");
} else {
av1_set_mb_mi(cm, width, height);
}
av1_init_context_buffers(cm);
cm->width = width;
cm->height = height;
}
ensure_mv_buffer(cm->cur_frame, cm);
cm->cur_frame->width = cm->width;
cm->cur_frame->height = cm->height;
}
#if CONFIG_FRAME_SIZE
static void setup_frame_size(AV1_COMMON *cm, int frame_size_override_flag,
struct aom_read_bit_buffer *rb) {
#else
static void setup_frame_size(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
#endif
int width, height;
BufferPool *const pool = cm->buffer_pool;
#if CONFIG_FRAME_SIZE
if (frame_size_override_flag) {
int num_bits_width = cm->seq_params.num_bits_width;
int num_bits_height = cm->seq_params.num_bits_height;
av1_read_frame_size(rb, num_bits_width, num_bits_height, &width, &height);
if (width > cm->seq_params.max_frame_width ||
height > cm->seq_params.max_frame_height) {
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Frame dimensions are larger than the maximum values");
}
} else {
width = cm->seq_params.max_frame_width;
height = cm->seq_params.max_frame_height;
}
#else
av1_read_frame_size(rb, &width, &height);
#endif
#if CONFIG_FRAME_SUPERRES
setup_superres(cm, rb, &width, &height);
#endif // CONFIG_FRAME_SUPERRES
setup_render_size(cm, rb);
resize_context_buffers(cm, width, height);
lock_buffer_pool(pool);
if (aom_realloc_frame_buffer(
get_frame_new_buffer(cm), cm->width, cm->height, cm->subsampling_x,
cm->subsampling_y,
#if CONFIG_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
AOM_BORDER_IN_PIXELS, cm->byte_alignment,
&pool->frame_bufs[cm->new_fb_idx].raw_frame_buffer, pool->get_fb_cb,
pool->cb_priv)) {
unlock_buffer_pool(pool);
aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate frame buffer");
}
unlock_buffer_pool(pool);
pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x;
pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y;
pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth;
pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space;
#if CONFIG_COLORSPACE_HEADERS
pool->frame_bufs[cm->new_fb_idx].buf.transfer_function =
cm->transfer_function;
pool->frame_bufs[cm->new_fb_idx].buf.chroma_sample_position =
cm->chroma_sample_position;
#endif
pool->frame_bufs[cm->new_fb_idx].buf.color_range = cm->color_range;
pool->frame_bufs[cm->new_fb_idx].buf.render_width = cm->render_width;
pool->frame_bufs[cm->new_fb_idx].buf.render_height = cm->render_height;
}
static void setup_sb_size(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
(void)rb;
#if CONFIG_EXT_PARTITION
set_sb_size(cm, aom_rb_read_bit(rb) ? BLOCK_128X128 : BLOCK_64X64);
#else
set_sb_size(cm, BLOCK_64X64);
#endif // CONFIG_EXT_PARTITION
}
static INLINE int valid_ref_frame_img_fmt(aom_bit_depth_t ref_bit_depth,
int ref_xss, int ref_yss,
aom_bit_depth_t this_bit_depth,
int this_xss, int this_yss) {
return ref_bit_depth == this_bit_depth && ref_xss == this_xss &&
ref_yss == this_yss;
}
static void setup_frame_size_with_refs(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
int width, height;
int found = 0, i;
int has_valid_ref_frame = 0;
BufferPool *const pool = cm->buffer_pool;
for (i = 0; i < INTER_REFS_PER_FRAME; ++i) {
if (aom_rb_read_bit(rb)) {
YV12_BUFFER_CONFIG *const buf = cm->frame_refs[i].buf;
width = buf->y_crop_width;
height = buf->y_crop_height;
cm->render_width = buf->render_width;
cm->render_height = buf->render_height;
#if CONFIG_FRAME_SUPERRES
setup_superres(cm, rb, &width, &height);
#endif // CONFIG_FRAME_SUPERRES
found = 1;
break;
}
}
if (!found) {
#if CONFIG_FRAME_SIZE
int num_bits_width = cm->seq_params.num_bits_width;
int num_bits_height = cm->seq_params.num_bits_height;
av1_read_frame_size(rb, num_bits_width, num_bits_height, &width, &height);
#else
av1_read_frame_size(rb, &width, &height);
#endif
#if CONFIG_FRAME_SUPERRES
setup_superres(cm, rb, &width, &height);
#endif // CONFIG_FRAME_SUPERRES
setup_render_size(cm, rb);
}
if (width <= 0 || height <= 0)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid frame size");
// Check to make sure at least one of frames that this frame references
// has valid dimensions.
for (i = 0; i < INTER_REFS_PER_FRAME; ++i) {
RefBuffer *const ref_frame = &cm->frame_refs[i];
has_valid_ref_frame |=
valid_ref_frame_size(ref_frame->buf->y_crop_width,
ref_frame->buf->y_crop_height, width, height);
}
if (!has_valid_ref_frame)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Referenced frame has invalid size");
for (i = 0; i < INTER_REFS_PER_FRAME; ++i) {
RefBuffer *const ref_frame = &cm->frame_refs[i];
if (!valid_ref_frame_img_fmt(ref_frame->buf->bit_depth,
ref_frame->buf->subsampling_x,
ref_frame->buf->subsampling_y, cm->bit_depth,
cm->subsampling_x, cm->subsampling_y))
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Referenced frame has incompatible color format");
}
resize_context_buffers(cm, width, height);
lock_buffer_pool(pool);
if (aom_realloc_frame_buffer(
get_frame_new_buffer(cm), cm->width, cm->height, cm->subsampling_x,
cm->subsampling_y,
#if CONFIG_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
AOM_BORDER_IN_PIXELS, cm->byte_alignment,
&pool->frame_bufs[cm->new_fb_idx].raw_frame_buffer, pool->get_fb_cb,
pool->cb_priv)) {
unlock_buffer_pool(pool);
aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate frame buffer");
}
unlock_buffer_pool(pool);
pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x;
pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y;
pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth;
pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space;
#if CONFIG_COLORSPACE_HEADERS
pool->frame_bufs[cm->new_fb_idx].buf.transfer_function =
cm->transfer_function;
pool->frame_bufs[cm->new_fb_idx].buf.chroma_sample_position =
cm->chroma_sample_position;
#endif
pool->frame_bufs[cm->new_fb_idx].buf.color_range = cm->color_range;
pool->frame_bufs[cm->new_fb_idx].buf.render_width = cm->render_width;
pool->frame_bufs[cm->new_fb_idx].buf.render_height = cm->render_height;
}
#if !CONFIG_OBU
static void read_tile_group_range(AV1Decoder *pbi,
struct aom_read_bit_buffer *const rb) {
AV1_COMMON *const cm = &pbi->common;
const int num_bits = cm->log2_tile_rows + cm->log2_tile_cols;
const int num_tiles =
cm->tile_rows * cm->tile_cols; // Note: May be < (1<<num_bits)
pbi->tg_start = aom_rb_read_literal(rb, num_bits);
pbi->tg_size = 1 + aom_rb_read_literal(rb, num_bits);
if (pbi->tg_start + pbi->tg_size > num_tiles)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Tile group extends past last tile in frame");
}
#endif // !CONFIG_OBU
#if CONFIG_MAX_TILE
// Same function as av1_read_uniform but reading from uncompresses header wb
static int rb_read_uniform(struct aom_read_bit_buffer *const rb, int n) {
const int l = get_unsigned_bits(n);
const int m = (1 << l) - n;
const int v = aom_rb_read_literal(rb, l - 1);
assert(l != 0);
if (v < m)
return v;
else
return (v << 1) - m + aom_rb_read_literal(rb, 1);
}
static void read_tile_info_max_tile(AV1_COMMON *const cm,
struct aom_read_bit_buffer *const rb) {
int width_mi = ALIGN_POWER_OF_TWO(cm->mi_cols, MAX_MIB_SIZE_LOG2);
int height_mi = ALIGN_POWER_OF_TWO(cm->mi_rows, MAX_MIB_SIZE_LOG2);
int width_sb = width_mi >> MAX_MIB_SIZE_LOG2;
int height_sb = height_mi >> MAX_MIB_SIZE_LOG2;
int start_sb, size_sb, i;
av1_get_tile_limits(cm);
cm->uniform_tile_spacing_flag = aom_rb_read_bit(rb);
// Read tile columns
if (cm->uniform_tile_spacing_flag) {
cm->log2_tile_cols = cm->min_log2_tile_cols;
while (cm->log2_tile_cols < cm->max_log2_tile_cols) {
if (!aom_rb_read_bit(rb)) {
break;
}
cm->log2_tile_cols++;
}
} else {
for (i = 0, start_sb = 0; width_sb > 0 && i < MAX_TILE_COLS; i++) {
size_sb = 1 + rb_read_uniform(rb, AOMMIN(width_sb, MAX_TILE_WIDTH_SB));
cm->tile_col_start_sb[i] = start_sb;
start_sb += size_sb;
width_sb -= size_sb;
}
cm->tile_cols = i;
cm->tile_col_start_sb[i] = start_sb + width_sb;
}
av1_calculate_tile_cols(cm);
// Read tile rows
if (cm->uniform_tile_spacing_flag) {
cm->log2_tile_rows = cm->min_log2_tile_rows;
while (cm->log2_tile_rows < cm->max_log2_tile_rows) {
if (!aom_rb_read_bit(rb)) {
break;
}
cm->log2_tile_rows++;
}
} else {
for (i = 0, start_sb = 0; height_sb > 0 && i < MAX_TILE_ROWS; i++) {
size_sb =
1 + rb_read_uniform(rb, AOMMIN(height_sb, cm->max_tile_height_sb));
cm->tile_row_start_sb[i] = start_sb;
start_sb += size_sb;
height_sb -= size_sb;
}
cm->tile_rows = i;
cm->tile_row_start_sb[i] = start_sb + height_sb;
}
av1_calculate_tile_rows(cm);
}
#endif
static void read_tile_info(AV1Decoder *const pbi,
struct aom_read_bit_buffer *const rb) {
AV1_COMMON *const cm = &pbi->common;
#if CONFIG_EXT_TILE
cm->single_tile_decoding = 0;
if (cm->large_scale_tile) {
struct loopfilter *lf = &cm->lf;
// Figure out single_tile_decoding by loopfilter_level.
#if CONFIG_LOOPFILTER_LEVEL
const int no_loopfilter = !(lf->filter_level[0] || lf->filter_level[1]);
#else
const int no_loopfilter = !lf->filter_level;
#endif
#if CONFIG_CDEF
const int no_cdef = cm->cdef_bits == 0 && cm->cdef_strengths[0] == 0 &&
cm->nb_cdef_strengths == 1;
#endif
#if CONFIG_LOOP_RESTORATION
const int no_restoration =
cm->rst_info[0].frame_restoration_type == RESTORE_NONE &&
cm->rst_info[1].frame_restoration_type == RESTORE_NONE &&
cm->rst_info[2].frame_restoration_type == RESTORE_NONE;
#endif
cm->single_tile_decoding = no_loopfilter
#if CONFIG_CDEF
&& no_cdef
#endif
#if CONFIG_LOOP_RESTORATION
&& no_restoration
#endif
;
// Read the tile width/height
#if CONFIG_EXT_PARTITION
if (cm->sb_size == BLOCK_128X128) {
cm->tile_width = aom_rb_read_literal(rb, 5) + 1;
cm->tile_height = aom_rb_read_literal(rb, 5) + 1;
} else {
#endif // CONFIG_EXT_PARTITION
cm->tile_width = aom_rb_read_literal(rb, 6) + 1;
cm->tile_height = aom_rb_read_literal(rb, 6) + 1;
#if CONFIG_EXT_PARTITION
}
#endif // CONFIG_EXT_PARTITION
cm->tile_width <<= cm->mib_size_log2;
cm->tile_height <<= cm->mib_size_log2;
cm->tile_width = AOMMIN(cm->tile_width, cm->mi_cols);
cm->tile_height = AOMMIN(cm->tile_height, cm->mi_rows);
// Get the number of tiles
cm->tile_cols = 1;
while (cm->tile_cols * cm->tile_width < cm->mi_cols) ++cm->tile_cols;
cm->tile_rows = 1;
while (cm->tile_rows * cm->tile_height < cm->mi_rows) ++cm->tile_rows;
#if CONFIG_DEPENDENT_HORZTILES
cm->dependent_horz_tiles = 0;
#endif
#if CONFIG_LOOPFILTERING_ACROSS_TILES
if (cm->tile_cols * cm->tile_rows > 1)
cm->loop_filter_across_tiles_enabled = aom_rb_read_bit(rb);
else
cm->loop_filter_across_tiles_enabled = 1;
#endif // CONFIG_LOOPFILTERING_ACROSS_TILES
if (cm->tile_cols * cm->tile_rows > 1) {
// Read the number of bytes used to store tile size
pbi->tile_col_size_bytes = aom_rb_read_literal(rb, 2) + 1;
pbi->tile_size_bytes = aom_rb_read_literal(rb, 2) + 1;
}
} else {
#endif // CONFIG_EXT_TILE
#if CONFIG_MAX_TILE
read_tile_info_max_tile(cm, rb);
#else
int min_log2_tile_cols, max_log2_tile_cols, max_ones;
av1_get_tile_n_bits(cm->mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);
// columns
max_ones = max_log2_tile_cols - min_log2_tile_cols;
cm->log2_tile_cols = min_log2_tile_cols;
while (max_ones-- && aom_rb_read_bit(rb)) cm->log2_tile_cols++;
if (cm->log2_tile_cols > 6)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid number of tile columns");
// rows
cm->log2_tile_rows = aom_rb_read_bit(rb);
if (cm->log2_tile_rows) cm->log2_tile_rows += aom_rb_read_bit(rb);
cm->tile_width =
get_tile_size(cm->mi_cols, cm->log2_tile_cols, &cm->tile_cols);
cm->tile_height =
get_tile_size(cm->mi_rows, cm->log2_tile_rows, &cm->tile_rows);
#endif // CONFIG_MAX_TILE
#if CONFIG_DEPENDENT_HORZTILES
if (cm->tile_rows > 1)
cm->dependent_horz_tiles = aom_rb_read_bit(rb);
else
cm->dependent_horz_tiles = 0;
#endif
#if CONFIG_LOOPFILTERING_ACROSS_TILES
if (cm->tile_cols * cm->tile_rows > 1)
cm->loop_filter_across_tiles_enabled = aom_rb_read_bit(rb);
else
cm->loop_filter_across_tiles_enabled = 1;
#endif // CONFIG_LOOPFILTERING_ACROSS_TILES
// tile size magnitude
pbi->tile_size_bytes = aom_rb_read_literal(rb, 2) + 1;
#if CONFIG_EXT_TILE
}
#endif // CONFIG_EXT_TILE
// each tile group header is in its own tile group OBU
#if !CONFIG_OBU
// Store an index to the location of the tile group information
pbi->tg_size_bit_offset = rb->bit_offset;
read_tile_group_range(pbi, rb);
#endif
}
static int mem_get_varsize(const uint8_t *src, int sz) {
switch (sz) {
case 1: return src[0];
case 2: return mem_get_le16(src);
case 3: return mem_get_le24(src);
case 4: return mem_get_le32(src);
default: assert(0 && "Invalid size"); return -1;
}
}
#if CONFIG_EXT_TILE
// Reads the next tile returning its size and adjusting '*data' accordingly
// based on 'is_last'.
static void get_ls_tile_buffer(
const uint8_t *const data_end, struct aom_internal_error_info *error_info,
const uint8_t **data, aom_decrypt_cb decrypt_cb, void *decrypt_state,
TileBufferDec (*const tile_buffers)[MAX_TILE_COLS], int tile_size_bytes,
int col, int row, int tile_copy_mode) {
size_t size;
size_t copy_size = 0;
const uint8_t *copy_data = NULL;
if (!read_is_valid(*data, tile_size_bytes, data_end))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile length");
if (decrypt_cb) {
uint8_t be_data[4];
decrypt_cb(decrypt_state, *data, be_data, tile_size_bytes);
// Only read number of bytes in cm->tile_size_bytes.
size = mem_get_varsize(be_data, tile_size_bytes);
} else {
size = mem_get_varsize(*data, tile_size_bytes);
}
// If tile_copy_mode = 1, then the top bit of the tile header indicates copy
// mode.
if (tile_copy_mode && (size >> (tile_size_bytes * 8 - 1)) == 1) {
// The remaining bits in the top byte signal the row offset
int offset = (size >> (tile_size_bytes - 1) * 8) & 0x7f;
// Currently, only use tiles in same column as reference tiles.
copy_data = tile_buffers[row - offset][col].data;
copy_size = tile_buffers[row - offset][col].size;
size = 0;
}
*data += tile_size_bytes;
if (size > (size_t)(data_end - *data))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile size");
if (size > 0) {
tile_buffers[row][col].data = *data;
tile_buffers[row][col].size = size;
} else {
tile_buffers[row][col].data = copy_data;
tile_buffers[row][col].size = copy_size;
}
*data += size;
tile_buffers[row][col].raw_data_end = *data;
}
static void get_ls_tile_buffers(
AV1Decoder *pbi, const uint8_t *data, const uint8_t *data_end,
TileBufferDec (*const tile_buffers)[MAX_TILE_COLS]) {
AV1_COMMON *const cm = &pbi->common;
const int tile_cols = cm->tile_cols;
const int tile_rows = cm->tile_rows;
const int have_tiles = tile_cols * tile_rows > 1;
if (!have_tiles) {
const size_t tile_size = data_end - data;
tile_buffers[0][0].data = data;
tile_buffers[0][0].size = tile_size;
tile_buffers[0][0].raw_data_end = NULL;
} else {
// We locate only the tile buffers that are required, which are the ones
// specified by pbi->dec_tile_col and pbi->dec_tile_row. Also, we always
// need the last (bottom right) tile buffer, as we need to know where the
// end of the compressed frame buffer is for proper superframe decoding.
const uint8_t *tile_col_data_end[MAX_TILE_COLS];
const uint8_t *const data_start = data;
const int dec_tile_row = AOMMIN(pbi->dec_tile_row, tile_rows);
const int single_row = pbi->dec_tile_row >= 0;
const int tile_rows_start = single_row ? dec_tile_row : 0;
const int tile_rows_end = single_row ? tile_rows_start + 1 : tile_rows;
const int dec_tile_col = AOMMIN(pbi->dec_tile_col, tile_cols);
const int single_col = pbi->dec_tile_col >= 0;
const int tile_cols_start = single_col ? dec_tile_col : 0;
const int tile_cols_end = single_col ? tile_cols_start + 1 : tile_cols;
const int tile_col_size_bytes = pbi->tile_col_size_bytes;
const int tile_size_bytes = pbi->tile_size_bytes;
const int tile_copy_mode =
((AOMMAX(cm->tile_width, cm->tile_height) << MI_SIZE_LOG2) <= 256) ? 1
: 0;
size_t tile_col_size;
int r, c;
// Read tile column sizes for all columns (we need the last tile buffer)
for (c = 0; c < tile_cols; ++c) {
const int is_last = c == tile_cols - 1;
if (!is_last) {
tile_col_size = mem_get_varsize(data, tile_col_size_bytes);
data += tile_col_size_bytes;
tile_col_data_end[c] = data + tile_col_size;
} else {
tile_col_size = data_end - data;
tile_col_data_end[c] = data_end;
}
data += tile_col_size;
}
data = data_start;
// Read the required tile sizes.
for (c = tile_cols_start; c < tile_cols_end; ++c) {
const int is_last = c == tile_cols - 1;
if (c > 0) data = tile_col_data_end[c - 1];
if (!is_last) data += tile_col_size_bytes;
// Get the whole of the last column, otherwise stop at the required tile.
for (r = 0; r < (is_last ? tile_rows : tile_rows_end); ++r) {
tile_buffers[r][c].col = c;
get_ls_tile_buffer(tile_col_data_end[c], &pbi->common.error, &data,
pbi->decrypt_cb, pbi->decrypt_state, tile_buffers,
tile_size_bytes, c, r, tile_copy_mode);
}
}
// If we have not read the last column, then read it to get the last tile.
if (tile_cols_end != tile_cols) {
c = tile_cols - 1;
data = tile_col_data_end[c - 1];
for (r = 0; r < tile_rows; ++r) {
tile_buffers[r][c].col = c;
get_ls_tile_buffer(tile_col_data_end[c], &pbi->common.error, &data,
pbi->decrypt_cb, pbi->decrypt_state, tile_buffers,
tile_size_bytes, c, r, tile_copy_mode);
}
}
}
}
#endif // CONFIG_EXT_TILE
// Reads the next tile returning its size and adjusting '*data' accordingly
// based on 'is_last'.
static void get_tile_buffer(const uint8_t *const data_end,
const int tile_size_bytes, int is_last,
struct aom_internal_error_info *error_info,
const uint8_t **data, aom_decrypt_cb decrypt_cb,
void *decrypt_state, TileBufferDec *const buf) {
size_t size;
if (!is_last) {
if (!read_is_valid(*data, tile_size_bytes, data_end))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile length");
if (decrypt_cb) {
uint8_t be_data[4];
decrypt_cb(decrypt_state, *data, be_data, tile_size_bytes);
size = mem_get_varsize(be_data, tile_size_bytes);
} else {
size = mem_get_varsize(*data, tile_size_bytes);
}
*data += tile_size_bytes;
if (size > (size_t)(data_end - *data))
aom_internal_error(error_info, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt tile size");
} else {
#if !CONFIG_OBU || CONFIG_ADD_4BYTES_OBUSIZE
size = data_end - *data;
#else
size = mem_get_varsize(*data, tile_size_bytes);
*data += tile_size_bytes;
#endif
}
buf->data = *data;
buf->size = size;
*data += size;
}
static void get_tile_buffers(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end,
TileBufferDec (*const tile_buffers)[MAX_TILE_COLS],
int startTile, int endTile) {
AV1_COMMON *const cm = &pbi->common;
int r, c;
const int tile_cols = cm->tile_cols;
const int tile_rows = cm->tile_rows;
int tc = 0;
int first_tile_in_tg = 0;
#if !CONFIG_OBU
struct aom_read_bit_buffer rb_tg_hdr;
uint8_t clear_data[MAX_AV1_HEADER_SIZE];
const size_t hdr_size = pbi->uncomp_hdr_size + pbi->first_partition_size;
const int tg_size_bit_offset = pbi->tg_size_bit_offset;
#endif
#if CONFIG_DEPENDENT_HORZTILES
int tile_group_start_col = 0;
int tile_group_start_row = 0;
#endif
#if CONFIG_SIMPLE_BWD_ADAPT
size_t max_tile_size = 0;
cm->largest_tile_id = 0;
#endif
for (r = 0; r < tile_rows; ++r) {
for (c = 0; c < tile_cols; ++c, ++tc) {
TileBufferDec *const buf = &tile_buffers[r][c];
#if CONFIG_OBU
const int is_last = (tc == endTile);
const size_t hdr_offset = 0;
#else
const int is_last = (r == tile_rows - 1) && (c == tile_cols - 1);
const size_t hdr_offset = (tc && tc == first_tile_in_tg) ? hdr_size : 0;
#endif
if (tc < startTile || tc > endTile) continue;
if (data + hdr_offset >= data_end)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Data ended before all tiles were read.");
buf->col = c;
#if CONFIG_OBU
#if CONFIG_DEPENDENT_HORZTILES
if (tc == startTile) {
tile_group_start_row = r;
tile_group_start_col = c;
}
#endif // CONFIG_DEPENDENT_HORZTILES
#else // CONFIG_OBU
if (hdr_offset) {
init_read_bit_buffer(pbi, &rb_tg_hdr, data, data_end, clear_data);
rb_tg_hdr.bit_offset = tg_size_bit_offset;
read_tile_group_range(pbi, &rb_tg_hdr);
#if CONFIG_DEPENDENT_HORZTILES
tile_group_start_row = r;
tile_group_start_col = c;
#endif
}
#endif // CONFIG_OBU
first_tile_in_tg += tc == first_tile_in_tg ? pbi->tg_size : 0;
data += hdr_offset;
get_tile_buffer(data_end, pbi->tile_size_bytes, is_last,
&pbi->common.error, &data, pbi->decrypt_cb,
pbi->decrypt_state, buf);
#if CONFIG_DEPENDENT_HORZTILES
cm->tile_group_start_row[r][c] = tile_group_start_row;
cm->tile_group_start_col[r][c] = tile_group_start_col;
#endif
#if CONFIG_SIMPLE_BWD_ADAPT
if (buf->size > max_tile_size) {
max_tile_size = buf->size;
cm->largest_tile_id = r * tile_cols + c;
}
#endif
}
}
}
#if CONFIG_LOOPFILTERING_ACROSS_TILES
static void dec_setup_across_tile_boundary_info(
const AV1_COMMON *const cm, const TileInfo *const tile_info) {
if (tile_info->mi_row_start >= tile_info->mi_row_end ||
tile_info->mi_col_start >= tile_info->mi_col_end)
return;
if (!cm->loop_filter_across_tiles_enabled) {
av1_setup_across_tile_boundary_info(cm, tile_info);
}
}
#endif // CONFIG_LOOPFILTERING_ACROSS_TILES
static const uint8_t *decode_tiles(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end, int startTile,
int endTile) {
AV1_COMMON *const cm = &pbi->common;
#if !CONFIG_LOOPFILTER_LEVEL
const AVxWorkerInterface *const winterface = aom_get_worker_interface();
#endif
const int tile_cols = cm->tile_cols;
const int tile_rows = cm->tile_rows;
const int n_tiles = tile_cols * tile_rows;
TileBufferDec(*const tile_buffers)[MAX_TILE_COLS] = pbi->tile_buffers;
#if CONFIG_EXT_TILE
const int dec_tile_row = AOMMIN(pbi->dec_tile_row, tile_rows);
const int single_row = pbi->dec_tile_row >= 0;
const int dec_tile_col = AOMMIN(pbi->dec_tile_col, tile_cols);
const int single_col = pbi->dec_tile_col >= 0;
#endif // CONFIG_EXT_TILE
int tile_rows_start;
int tile_rows_end;
int tile_cols_start;
int tile_cols_end;
int inv_col_order;
int inv_row_order;
int tile_row, tile_col;
uint8_t allow_update_cdf;
#if CONFIG_EXT_TILE
if (cm->large_scale_tile) {
tile_rows_start = single_row ? dec_tile_row : 0;
tile_rows_end = single_row ? dec_tile_row + 1 : tile_rows;
tile_cols_start = single_col ? dec_tile_col : 0;
tile_cols_end = single_col ? tile_cols_start + 1 : tile_cols;
inv_col_order = pbi->inv_tile_order && !single_col;
inv_row_order = pbi->inv_tile_order && !single_row;
allow_update_cdf = 0;
} else {
#endif // CONFIG_EXT_TILE
tile_rows_start = 0;
tile_rows_end = tile_rows;
tile_cols_start = 0;
tile_cols_end = tile_cols;
inv_col_order = pbi->inv_tile_order;
inv_row_order = pbi->inv_tile_order;
allow_update_cdf = 1;
#if CONFIG_EXT_TILE
}
#endif // CONFIG_EXT_TILE
#if !CONFIG_LOOPFILTER_LEVEL
if (cm->lf.filter_level && !cm->skip_loop_filter &&
pbi->lf_worker.data1 == NULL) {
CHECK_MEM_ERROR(cm, pbi->lf_worker.data1,
aom_memalign(32, sizeof(LFWorkerData)));
pbi->lf_worker.hook = (AVxWorkerHook)av1_loop_filter_worker;
if (pbi->max_threads > 1 && !winterface->reset(&pbi->lf_worker)) {
aom_internal_error(&cm->error, AOM_CODEC_ERROR,
"Loop filter thread creation failed");
}
}
if (cm->lf.filter_level && !cm->skip_loop_filter) {
LFWorkerData *const lf_data = (LFWorkerData *)pbi->lf_worker.data1;
// Be sure to sync as we might be resuming after a failed frame decode.
winterface->sync(&pbi->lf_worker);
av1_loop_filter_data_reset(lf_data, get_frame_new_buffer(cm), cm,
pbi->mb.plane);
}
#endif // CONFIG_LOOPFILTER_LEVEL
assert(tile_rows <= MAX_TILE_ROWS);
assert(tile_cols <= MAX_TILE_COLS);
#if CONFIG_EXT_TILE
if (cm->large_scale_tile)
get_ls_tile_buffers(pbi, data, data_end, tile_buffers);
else
#endif // CONFIG_EXT_TILE
get_tile_buffers(pbi, data, data_end, tile_buffers, startTile, endTile);
if (pbi->tile_data == NULL || n_tiles != pbi->allocated_tiles) {
aom_free(pbi->tile_data);
CHECK_MEM_ERROR(cm, pbi->tile_data,
aom_memalign(32, n_tiles * (sizeof(*pbi->tile_data))));
pbi->allocated_tiles = n_tiles;
}
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
aom_accounting_reset(&pbi->accounting);
}
#endif
// Load all tile information into tile_data.
for (tile_row = tile_rows_start; tile_row < tile_rows_end; ++tile_row) {
for (tile_col = tile_cols_start; tile_col < tile_cols_end; ++tile_col) {
const TileBufferDec *const buf = &tile_buffers[tile_row][tile_col];
TileData *const td = pbi->tile_data + tile_cols * tile_row + tile_col;
if (tile_row * cm->tile_cols + tile_col < startTile ||
tile_row * cm->tile_cols + tile_col > endTile)
continue;
td->cm = cm;
td->xd = pbi->mb;
td->xd.corrupted = 0;
td->xd.counts =
cm->refresh_frame_context == REFRESH_FRAME_CONTEXT_BACKWARD
? &cm->counts
: NULL;
av1_zero(td->dqcoeff);
av1_tile_init(&td->xd.tile, td->cm, tile_row, tile_col);
setup_bool_decoder(buf->data, data_end, buf->size, &cm->error,
&td->bit_reader, allow_update_cdf,
#if CONFIG_ANS && ANS_MAX_SYMBOLS
1 << cm->ans_window_size_log2,
#endif // CONFIG_ANS && ANS_MAX_SYMBOLS
pbi->decrypt_cb, pbi->decrypt_state);
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
td->bit_reader.accounting = &pbi->accounting;
} else {
td->bit_reader.accounting = NULL;
}
#endif
av1_init_macroblockd(cm, &td->xd,
#if CONFIG_CFL
&td->cfl,
#endif
td->dqcoeff);
// Initialise the tile context from the frame context
td->tctx = *cm->fc;
td->xd.tile_ctx = &td->tctx;
td->xd.plane[0].color_index_map = td->color_index_map[0];
td->xd.plane[1].color_index_map = td->color_index_map[1];
#if CONFIG_MRC_TX
td->xd.mrc_mask = td->mrc_mask;
#endif // CONFIG_MRC_TX
}
}
for (tile_row = tile_rows_start; tile_row < tile_rows_end; ++tile_row) {
const int row = inv_row_order ? tile_rows - 1 - tile_row : tile_row;
int mi_row = 0;
TileInfo tile_info;
av1_tile_set_row(&tile_info, cm, row);
for (tile_col = tile_cols_start; tile_col < tile_cols_end; ++tile_col) {
const int col = inv_col_order ? tile_cols - 1 - tile_col : tile_col;
TileData *const td = pbi->tile_data + tile_cols * row + col;
if (tile_row * cm->tile_cols + tile_col < startTile ||
tile_row * cm->tile_cols + tile_col > endTile)
continue;
#if CONFIG_ACCOUNTING
if (pbi->acct_enabled) {
td->bit_reader.accounting->last_tell_frac =
aom_reader_tell_frac(&td->bit_reader);
}
#endif
av1_tile_set_col(&tile_info, cm, col);
#if CONFIG_DEPENDENT_HORZTILES
av1_tile_set_tg_boundary(&tile_info, cm, tile_row, tile_col);
if (!cm->dependent_horz_tiles || tile_row == 0 ||
tile_info.tg_horz_boundary) {
av1_zero_above_context(cm, tile_info.mi_col_start,
tile_info.mi_col_end);
}
#else
av1_zero_above_context(cm, tile_info.mi_col_start, tile_info.mi_col_end);
#endif
#if CONFIG_LOOP_RESTORATION
av1_reset_loop_restoration(&td->xd);
#endif // CONFIG_LOOP_RESTORATION
#if CONFIG_LOOPFILTERING_ACROSS_TILES
dec_setup_across_tile_boundary_info(cm, &tile_info);
#endif // CONFIG_LOOPFILTERING_ACROSS_TILES
for (mi_row = tile_info.mi_row_start; mi_row < tile_info.mi_row_end;
mi_row += cm->mib_size) {
int mi_col;
av1_zero_left_context(&td->xd);
for (mi_col = tile_info.mi_col_start; mi_col < tile_info.mi_col_end;
mi_col += cm->mib_size) {
#if CONFIG_SYMBOLRATE
av1_record_superblock(td->xd.counts);
#endif
decode_partition(pbi, &td->xd, mi_row, mi_col, &td->bit_reader,
cm->sb_size);
#if NC_MODE_INFO
detoken_and_recon_sb(pbi, &td->xd, mi_row, mi_col, &td->bit_reader,
cm->sb_size);
#endif
#if CONFIG_LPF_SB
if (USE_LOOP_FILTER_SUPERBLOCK) {
// apply deblocking filtering right after each superblock is decoded
const int guess_filter_lvl = FAKE_FILTER_LEVEL;
av1_loop_filter_frame(get_frame_new_buffer(cm), cm, &pbi->mb,
guess_filter_lvl, 0, 1, mi_row, mi_col);
}
#endif // CONFIG_LPF_SB
}
aom_merge_corrupted_flag(&pbi->mb.corrupted, td->xd.corrupted);
if (pbi->mb.corrupted)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Failed to decode tile data");
}
}
#if !CONFIG_OBU
assert(mi_row > 0);
#endif
// After loopfiltering, the last 7 row pixels in each superblock row may
// still be changed by the longest loopfilter of the next superblock row.
if (cm->frame_parallel_decode)
av1_frameworker_broadcast(pbi->cur_buf, mi_row << cm->mib_size_log2);
}
#if CONFIG_INTRABC
if (!(cm->allow_intrabc && NO_FILTER_FOR_IBC))
#endif // CONFIG_INTRABC
{
// Loopfilter the whole frame.
#if CONFIG_LPF_SB
av1_loop_filter_frame(get_frame_new_buffer(cm), cm, &pbi->mb,
cm->lf.filter_level, 0, 0, 0, 0);
#else
#if CONFIG_OBU
if (endTile == cm->tile_rows * cm->tile_cols - 1)
#endif
#if CONFIG_LOOPFILTER_LEVEL
if (cm->lf.filter_level[0] || cm->lf.filter_level[1]) {
av1_loop_filter_frame(get_frame_new_buffer(cm), cm, &pbi->mb,
cm->lf.filter_level[0], cm->lf.filter_level[1], 0,
0);
av1_loop_filter_frame(get_frame_new_buffer(cm), cm, &pbi->mb,
cm->lf.filter_level_u, cm->lf.filter_level_u, 1,
0);
av1_loop_filter_frame(get_frame_new_buffer(cm), cm, &pbi->mb,
cm->lf.filter_level_v, cm->lf.filter_level_v, 2,
0);
}
#else
av1_loop_filter_frame(get_frame_new_buffer(cm), cm, &pbi->mb,
cm->lf.filter_level, 0, 0);
#endif // CONFIG_LOOPFILTER_LEVEL
#endif // CONFIG_LPF_SB
}
if (cm->frame_parallel_decode)
av1_frameworker_broadcast(pbi->cur_buf, INT_MAX);
#if CONFIG_EXT_TILE
if (cm->large_scale_tile) {
if (n_tiles == 1) {
#if CONFIG_ANS
return data_end;
#else
// Find the end of the single tile buffer
return aom_reader_find_end(&pbi->tile_data->bit_reader);
#endif // CONFIG_ANS
} else {
// Return the end of the last tile buffer
return tile_buffers[tile_rows - 1][tile_cols - 1].raw_data_end;
}
} else {
#endif // CONFIG_EXT_TILE
#if CONFIG_ANS
return data_end;
#else
#if !CONFIG_OBU
{
// Get last tile data.
TileData *const td = pbi->tile_data + tile_cols * tile_rows - 1;
return aom_reader_find_end(&td->bit_reader);
}
#else
TileData *const td = pbi->tile_data + endTile;
return aom_reader_find_end(&td->bit_reader);
#endif
#endif // CONFIG_ANS
#if CONFIG_EXT_TILE
}
#endif // CONFIG_EXT_TILE
}
static void error_handler(void *data) {
AV1_COMMON *const cm = (AV1_COMMON *)data;
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME, "Truncated packet");
}
static void read_bitdepth_colorspace_sampling(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb,
int allow_lowbitdepth) {
if (cm->profile >= PROFILE_2) {
cm->bit_depth = aom_rb_read_bit(rb) ? AOM_BITS_12 : AOM_BITS_10;
} else {
cm->bit_depth = AOM_BITS_8;
}
#if CONFIG_HIGHBITDEPTH
cm->use_highbitdepth = cm->bit_depth > AOM_BITS_8 || !allow_lowbitdepth;
#else
(void)allow_lowbitdepth;
#endif
#if CONFIG_COLORSPACE_HEADERS
cm->color_space = aom_rb_read_literal(rb, 5);
cm->transfer_function = aom_rb_read_literal(rb, 5);
#else
cm->color_space = aom_rb_read_literal(rb, 3);
#endif
if (cm->color_space != AOM_CS_SRGB) {
// [16,235] (including xvycc) vs [0,255] range
cm->color_range = aom_rb_read_bit(rb);
if (cm->profile == PROFILE_1 || cm->profile == PROFILE_3) {
cm->subsampling_x = aom_rb_read_bit(rb);
cm->subsampling_y = aom_rb_read_bit(rb);
if (cm->subsampling_x == 1 && cm->subsampling_y == 1)
aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"4:2:0 color not supported in profile 1 or 3");
if (aom_rb_read_bit(rb))
aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Reserved bit set");
} else {
cm->subsampling_y = cm->subsampling_x = 1;
}
#if CONFIG_COLORSPACE_HEADERS
if (cm->subsampling_x == 1 && cm->subsampling_y == 1) {
cm->chroma_sample_position = aom_rb_read_literal(rb, 2);
}
#endif
} else {
if (cm->profile == PROFILE_1 || cm->profile == PROFILE_3) {
// Note if colorspace is SRGB then 4:4:4 chroma sampling is assumed.
// 4:2:2 or 4:4:0 chroma sampling is not allowed.
cm->subsampling_y = cm->subsampling_x = 0;
if (aom_rb_read_bit(rb))
aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Reserved bit set");
} else {
aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"4:4:4 color not supported in profile 0 or 2");
}
}
}
#if CONFIG_REFERENCE_BUFFER || CONFIG_OBU
void read_sequence_header(SequenceHeader *seq_params,
struct aom_read_bit_buffer *rb) {
#if CONFIG_FRAME_SIZE
int num_bits_width = aom_rb_read_literal(rb, 4) + 1;
int num_bits_height = aom_rb_read_literal(rb, 4) + 1;
int max_frame_width = aom_rb_read_literal(rb, num_bits_width) + 1;
int max_frame_height = aom_rb_read_literal(rb, num_bits_height) + 1;
seq_params->num_bits_width = num_bits_width;
seq_params->num_bits_height = num_bits_height;
seq_params->max_frame_width = max_frame_width;
seq_params->max_frame_height = max_frame_height;
#endif
/* Placeholder for actually reading from the bitstream */
seq_params->frame_id_numbers_present_flag = aom_rb_read_bit(rb);
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.
seq_params->delta_frame_id_length = aom_rb_read_literal(rb, 4) + 2;
seq_params->frame_id_length =
aom_rb_read_literal(rb, 3) + seq_params->delta_frame_id_length + 1;
}
#if CONFIG_MONO_VIDEO
seq_params->monochrome = aom_rb_read_bit(rb);
#endif // CONFIG_MONO_VIDEO
}
#endif // CONFIG_REFERENCE_BUFFER || CONFIG_OBU
static void read_compound_tools(AV1_COMMON *cm,
struct aom_read_bit_buffer *rb) {
if (!frame_is_intra_only(cm) && cm->reference_mode != COMPOUND_REFERENCE) {
cm->allow_interintra_compound = aom_rb_read_bit(rb);
} else {
cm->allow_interintra_compound = 0;
}
#if CONFIG_COMPOUND_SINGLEREF
if (!frame_is_intra_only(cm)) {
#else // !CONFIG_COMPOUND_SINGLEREF
if (!frame_is_intra_only(cm) && cm->reference_mode != SINGLE_REFERENCE) {
#endif // CONFIG_COMPOUND_SINGLEREF
cm->allow_masked_compound = aom_rb_read_bit(rb);
} else {
cm->allow_masked_compound = 0;
}
}
static int read_global_motion_params(WarpedMotionParams *params,
const WarpedMotionParams *ref_params,
struct aom_read_bit_buffer *rb,
int allow_hp) {
TransformationType type = aom_rb_read_bit(rb);
if (type != IDENTITY) {
#if GLOBAL_TRANS_TYPES > 4
type += aom_rb_read_literal(rb, GLOBAL_TYPE_BITS);
#else
if (aom_rb_read_bit(rb))
type = ROTZOOM;
else
type = aom_rb_read_bit(rb) ? TRANSLATION : AFFINE;
#endif // GLOBAL_TRANS_TYPES > 4
}
*params = default_warp_params;
params->wmtype = type;
if (type >= ROTZOOM) {
params->wmmat[2] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[2] >> GM_ALPHA_PREC_DIFF) -
(1 << GM_ALPHA_PREC_BITS)) *
GM_ALPHA_DECODE_FACTOR +
(1 << WARPEDMODEL_PREC_BITS);
params->wmmat[3] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[3] >> GM_ALPHA_PREC_DIFF)) *
GM_ALPHA_DECODE_FACTOR;
}
if (type >= AFFINE) {
params->wmmat[4] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[4] >> GM_ALPHA_PREC_DIFF)) *
GM_ALPHA_DECODE_FACTOR;
params->wmmat[5] = aom_rb_read_signed_primitive_refsubexpfin(
rb, GM_ALPHA_MAX + 1, SUBEXPFIN_K,
(ref_params->wmmat[5] >> GM_ALPHA_PREC_DIFF) -
(1 << GM_ALPHA_PREC_BITS)) *
GM_ALPHA_DECODE_FACTOR +
(1 << WARPEDMODEL_PREC_BITS);
} else {
params->wmmat[4] = -params->wmmat[3];
params->wmmat[5] = params->wmmat[2];
}
if (type >= TRANSLATION) {
const int trans_bits = (type == TRANSLATION)
? GM_ABS_TRANS_ONLY_BITS - !allow_hp
: GM_ABS_TRANS_BITS;
const int trans_dec_factor =
(type == TRANSLATION) ? GM_TRANS_ONLY_DECODE_FACTOR * (1 << !allow_hp)
: GM_TRANS_DECODE_FACTOR;
const int trans_prec_diff = (type == TRANSLATION)
? GM_TRANS_ONLY_PREC_DIFF + !allow_hp
: GM_TRANS_PREC_DIFF;
params->wmmat[0] = aom_rb_read_signed_primitive_refsubexpfin(
rb, (1 << trans_bits) + 1, SUBEXPFIN_K,
(ref_params->wmmat[0] >> trans_prec_diff)) *
trans_dec_factor;
params->wmmat[1] = aom_rb_read_signed_primitive_refsubexpfin(
rb, (1 << trans_bits) + 1, SUBEXPFIN_K,
(ref_params->wmmat[1] >> trans_prec_diff)) *
trans_dec_factor;
}
if (params->wmtype <= AFFINE) {
int good_shear_params = get_shear_params(params);
if (!good_shear_params) return 0;
}
return 1;
}
static void read_global_motion(AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
int frame;
for (frame = LAST_FRAME; frame <= ALTREF_FRAME; ++frame) {
const WarpedMotionParams *ref_params =
cm->error_resilient_mode ? &default_warp_params
: &cm->prev_frame->global_motion[frame];
int good_params = read_global_motion_params(
&cm->global_motion[frame], ref_params, rb, cm->allow_high_precision_mv);
if (!good_params) {
#if WARPED_MOTION_DEBUG
printf("Warning: unexpected global motion shear params from aomenc\n");
#endif
cm->global_motion[frame].invalid = 1;
}
// 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(cm, frame);
if (cm->width == ref_buf->y_crop_width &&
cm->height == ref_buf->y_crop_height) {
read_global_motion_params(&cm->global_motion[frame],
&cm->prev_frame->global_motion[frame], rb,
cm->allow_high_precision_mv);
} else {
cm->global_motion[frame] = default_warp_params;
}
*/
/*
printf("Dec Ref %d [%d/%d]: %d %d %d %d\n",
frame, cm->current_video_frame, cm->show_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]);
*/
}
memcpy(cm->cur_frame->global_motion, cm->global_motion,
TOTAL_REFS_PER_FRAME * sizeof(WarpedMotionParams));
}
static size_t read_uncompressed_header(AV1Decoder *pbi,
struct aom_read_bit_buffer *rb) {
AV1_COMMON *const cm = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
BufferPool *const pool = cm->buffer_pool;
RefCntBuffer *const frame_bufs = pool->frame_bufs;
int i, mask, ref_index = 0;
size_t sz;
cm->last_frame_type = cm->frame_type;
cm->last_intra_only = cm->intra_only;
// NOTE: By default all coded frames to be used as a reference
cm->is_reference_frame = 1;
#if !CONFIG_OBU
if (aom_rb_read_literal(rb, 2) != AOM_FRAME_MARKER)
aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Invalid frame marker");
cm->profile = av1_read_profile(rb);
const BITSTREAM_PROFILE MAX_SUPPORTED_PROFILE =
CONFIG_HIGHBITDEPTH ? MAX_PROFILES : PROFILE_2;
if (cm->profile >= MAX_SUPPORTED_PROFILE)
aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Unsupported bitstream profile");
#endif
#if CONFIG_EXT_TILE
cm->large_scale_tile = aom_rb_read_literal(rb, 1);
#if CONFIG_REFERENCE_BUFFER
if (cm->large_scale_tile) cm->seq_params.frame_id_numbers_present_flag = 0;
#endif // CONFIG_REFERENCE_BUFFER
#endif // CONFIG_EXT_TILE
cm->show_existing_frame = aom_rb_read_bit(rb);
if (cm->show_existing_frame) {
// Show an existing frame directly.
const int existing_frame_idx = aom_rb_read_literal(rb, 3);
const int frame_to_show = cm->ref_frame_map[existing_frame_idx];
#if CONFIG_REFERENCE_BUFFER
if (cm->seq_params.frame_id_numbers_present_flag) {
int frame_id_length = cm->seq_params.frame_id_length;
int display_frame_id = aom_rb_read_literal(rb, frame_id_length);
/* Compare display_frame_id with ref_frame_id and check valid for
* referencing */
if (display_frame_id != cm->ref_frame_id[existing_frame_idx] ||
cm->valid_for_referencing[existing_frame_idx] == 0)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Reference buffer frame ID mismatch");
}
#endif
lock_buffer_pool(pool);
if (frame_to_show < 0 || frame_bufs[frame_to_show].ref_count < 1) {
unlock_buffer_pool(pool);
aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
"Buffer %d does not contain a decoded frame",
frame_to_show);
}
ref_cnt_fb(frame_bufs, &cm->new_fb_idx, frame_to_show);
unlock_buffer_pool(pool);
#if CONFIG_LOOPFILTER_LEVEL
cm->lf.filter_level[0] = 0;
cm->lf.filter_level[1] = 0;
#else
cm->lf.filter_level = 0;
#endif
cm->show_frame = 1;
pbi->refresh_frame_flags = 0;
if (cm->frame_parallel_decode) {
for (i = 0; i < REF_FRAMES; ++i)
cm->next_ref_frame_map[i] = cm->ref_frame_map[i];
}
return 0;
}
#if !CONFIG_OBU
cm->frame_type = (FRAME_TYPE)aom_rb_read_bit(rb);
cm->show_frame = aom_rb_read_bit(rb);
if (cm->frame_type != KEY_FRAME)
cm->intra_only = cm->show_frame ? 0 : aom_rb_read_bit(rb);
#else
cm->frame_type = (FRAME_TYPE)aom_rb_read_literal(rb, 2); // 2 bits
cm->show_frame = aom_rb_read_bit(rb);
cm->intra_only = cm->frame_type == INTRA_ONLY_FRAME;
#endif
cm->error_resilient_mode = aom_rb_read_bit(rb);
#if CONFIG_REFERENCE_BUFFER
#if !CONFIG_OBU
if (frame_is_intra_only(cm)) read_sequence_header(&cm->seq_params, rb);
#endif // !CONFIG_OBU
if (cm->seq_params.frame_id_numbers_present_flag) {
int frame_id_length = cm->seq_params.frame_id_length;
int diff_len = cm->seq_params.delta_frame_id_length;
int prev_frame_id = 0;
if (cm->frame_type != KEY_FRAME) {
prev_frame_id = cm->current_frame_id;
}
cm->current_frame_id = aom_rb_read_literal(rb, frame_id_length);
if (cm->frame_type != KEY_FRAME) {
int diff_frame_id;
if (cm->current_frame_id > prev_frame_id) {
diff_frame_id = cm->current_frame_id - prev_frame_id;
} else {
diff_frame_id =
(1 << frame_id_length) + cm->current_frame_id - prev_frame_id;
}
/* Check current_frame_id for conformance */
if (prev_frame_id == cm->current_frame_id ||
diff_frame_id >= (1 << (frame_id_length - 1))) {
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid value of current_frame_id");
}
}
/* Check if some frames need to be marked as not valid for referencing */
for (i = 0; i < REF_FRAMES; i++) {
if (cm->frame_type == KEY_FRAME) {
cm->valid_for_referencing[i] = 0;
} else if (cm->current_frame_id - (1 << diff_len) > 0) {
if (cm->ref_frame_id[i] > cm->current_frame_id ||
cm->ref_frame_id[i] < cm->current_frame_id - (1 << diff_len))
cm->valid_for_referencing[i] = 0;
} else {
if (cm->ref_frame_id[i] > cm->current_frame_id &&
cm->ref_frame_id[i] <
(1 << frame_id_length) + cm->current_frame_id - (1 << diff_len))
cm->valid_for_referencing[i] = 0;
}
}
}
#endif // CONFIG_REFERENCE_BUFFER
#if CONFIG_FRAME_SIZE
int frame_size_override_flag = aom_rb_read_literal(rb, 1);
#endif
#if CONFIG_INTRABC
cm->allow_intrabc = 0;
#endif // CONFIG_INTRABC
if (cm->frame_type == KEY_FRAME) {
cm->current_video_frame = 0;
#if !CONFIG_OBU
read_bitdepth_colorspace_sampling(cm, rb, pbi->allow_lowbitdepth);
#endif
pbi->refresh_frame_flags = (1 << REF_FRAMES) - 1;
for (i = 0; i < INTER_REFS_PER_FRAME; ++i) {
cm->frame_refs[i].idx = INVALID_IDX;
cm->frame_refs[i].buf = NULL;
}
#if CONFIG_FRAME_SIZE
setup_frame_size(cm, frame_size_override_flag, rb);
#else
setup_frame_size(cm, rb);
#endif
setup_sb_size(cm, rb);
if (pbi->need_resync) {
memset(&cm->ref_frame_map, -1, sizeof(cm->ref_frame_map));
pbi->need_resync = 0;
}
#if CONFIG_ANS && ANS_MAX_SYMBOLS
cm->ans_window_size_log2 = aom_rb_read_literal(rb, 4) + 8;
#endif // CONFIG_ANS && ANS_MAX_SYMBOLS
cm->allow_screen_content_tools = aom_rb_read_bit(rb);
#if CONFIG_INTRABC
if (cm->allow_screen_content_tools) cm->allow_intrabc = aom_rb_read_bit(rb);
#endif // CONFIG_INTRABC
#if CONFIG_AMVR
if (cm->allow_screen_content_tools) {
if (aom_rb_read_bit(rb)) {
cm->seq_force_integer_mv = 2;
} else {
cm->seq_force_integer_mv = aom_rb_read_bit(rb);
}
} else {
cm->seq_force_integer_mv = 0;
}
#endif
#if CONFIG_TEMPMV_SIGNALING
cm->use_prev_frame_mvs = 0;
#endif
} else {
if (cm->intra_only) {
cm->allow_screen_content_tools = aom_rb_read_bit(rb);
#if CONFIG_INTRABC
if (cm->allow_screen_content_tools)
cm->allow_intrabc = aom_rb_read_bit(rb);
#endif // CONFIG_INTRABC
}
#if CONFIG_TEMPMV_SIGNALING
if (cm->intra_only || cm->error_resilient_mode) cm->use_prev_frame_mvs = 0;
#endif
#if CONFIG_NO_FRAME_CONTEXT_SIGNALING
// The only way to reset all frame contexts to their default values is with a
// keyframe.
#else
if (cm->error_resilient_mode) {
cm->reset_frame_context = RESET_FRAME_CONTEXT_ALL;
} else {
if (cm->intra_only) {
cm->reset_frame_context = aom_rb_read_bit(rb)
? RESET_FRAME_CONTEXT_ALL
: RESET_FRAME_CONTEXT_CURRENT;
} else {
cm->reset_frame_context = aom_rb_read_bit(rb)
? RESET_FRAME_CONTEXT_CURRENT
: RESET_FRAME_CONTEXT_NONE;
if (cm->reset_frame_context == RESET_FRAME_CONTEXT_CURRENT)
cm->reset_frame_context = aom_rb_read_bit(rb)
? RESET_FRAME_CONTEXT_ALL
: RESET_FRAME_CONTEXT_CURRENT;
}
}
#endif
if (cm->intra_only) {
#if !CONFIG_OBU
read_bitdepth_colorspace_sampling(cm, rb, pbi->allow_lowbitdepth);
#endif
pbi->refresh_frame_flags = aom_rb_read_literal(rb, REF_FRAMES);
#if CONFIG_FRAME_SIZE
setup_frame_size(cm, frame_size_override_flag, rb);
#else
setup_frame_size(cm, rb);
#endif
setup_sb_size(cm, rb);
if (pbi->need_resync) {
memset(&cm->ref_frame_map, -1, sizeof(cm->ref_frame_map));
pbi->need_resync = 0;
}
#if CONFIG_ANS && ANS_MAX_SYMBOLS
cm->ans_window_size_log2 = aom_rb_read_literal(rb, 4) + 8;
#endif
} else if (pbi->need_resync != 1) { /* Skip if need resync */
#if CONFIG_OBU
pbi->refresh_frame_flags = (cm->frame_type == S_FRAME)
? ~(1 << REF_FRAMES)
: aom_rb_read_literal(rb, REF_FRAMES);
#else
pbi->refresh_frame_flags = aom_rb_read_literal(rb, REF_FRAMES);
#endif
if (!pbi->refresh_frame_flags) {
// NOTE: "pbi->refresh_frame_flags == 0" indicates that the coded frame
// will not be used as a reference
cm->is_reference_frame = 0;
}
for (i = 0; i < INTER_REFS_PER_FRAME; ++i) {
const int ref = aom_rb_read_literal(rb, REF_FRAMES_LOG2);
const int idx = cm->ref_frame_map[ref];
// Most of the time, streams start with a keyframe. In that case,
// ref_frame_map will have been filled in at that point and will not
// contain any -1's. However, streams are explicitly allowed to start
// with an intra-only frame, so long as they don't then signal a
// reference to a slot that hasn't been set yet. That's what we are
// checking here.
if (idx == -1)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Inter frame requests nonexistent reference");
RefBuffer *const ref_frame = &cm->frame_refs[i];
ref_frame->idx = idx;
ref_frame->buf = &frame_bufs[idx].buf;
#if CONFIG_FRAME_SIGN_BIAS
#if CONFIG_OBU
// NOTE: For the scenario of (cm->frame_type != S_FRAME),
// ref_frame_sign_bias will be reset based on frame offsets.
cm->ref_frame_sign_bias[LAST_FRAME + i] = 0;
#endif // CONFIG_OBU
#else // !CONFIG_FRAME_SIGN_BIAS
#if CONFIG_OBU
cm->ref_frame_sign_bias[LAST_FRAME + i] =
(cm->frame_type == S_FRAME) ? 0 : aom_rb_read_bit(rb);
#else // !CONFIG_OBU
cm->ref_frame_sign_bias[LAST_FRAME + i] = aom_rb_read_bit(rb);
#endif // CONFIG_OBU
#endif // CONFIG_FRAME_SIGN_BIAS
#if CONFIG_REFERENCE_BUFFER
if (cm->seq_params.frame_id_numbers_present_flag) {
int frame_id_length = cm->seq_params.frame_id_length;
int diff_len = cm->seq_params.delta_frame_id_length;
int delta_frame_id_minus1 = aom_rb_read_literal(rb, diff_len);
int ref_frame_id =
((cm->current_frame_id - (delta_frame_id_minus1 + 1) +
(1 << frame_id_length)) %
(1 << frame_id_length));
/* Compare values derived from delta_frame_id_minus1 and
* refresh_frame_flags. Also, check valid for referencing */
if (ref_frame_id != cm->ref_frame_id[ref] ||
cm->valid_for_referencing[ref] == 0)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Reference buffer frame ID mismatch");
}
#endif // CONFIG_REFERENCE_BUFFER
}
#if CONFIG_FRAME_SIZE
if (cm->error_resilient_mode == 0 && frame_size_override_flag) {
setup_frame_size_with_refs(cm, rb);
} else {
setup_frame_size(cm, frame_size_override_flag, rb);
}
#else
setup_frame_size_with_refs(cm, rb);
#endif
#if CONFIG_AMVR
if (cm->seq_force_integer_mv == 2) {
cm->cur_frame_force_integer_mv = aom_rb_read_bit(rb);
} else {
cm->cur_frame_force_integer_mv = cm->seq_force_integer_mv;
}
if (cm->cur_frame_force_integer_mv) {
cm->allow_high_precision_mv = 0;
} else {
#if CONFIG_EIGHTH_PEL_MV_ONLY
cm->allow_high_precision_mv = 1;
#else
cm->allow_high_precision_mv = aom_rb_read_bit(rb);
#endif // CONFIG_EIGHTH_PEL_MV_ONLY
}
#else
#if CONFIG_EIGHTH_PEL_MV_ONLY
cm->allow_high_precision_mv = 1;
#else
cm->allow_high_precision_mv = aom_rb_read_bit(rb);
#endif // CONFIG_EIGHTH_PEL_MV_ONLY
#endif
cm->interp_filter = read_frame_interp_filter(rb);
#if CONFIG_TEMPMV_SIGNALING
if (frame_might_use_prev_frame_mvs(cm))
cm->use_ref_frame_mvs = aom_rb_read_bit(rb);
else
cm->use_ref_frame_mvs = 0;
cm->use_prev_frame_mvs =
cm->use_ref_frame_mvs && frame_can_use_prev_frame_mvs(cm);
#endif
for (i = 0; i < INTER_REFS_PER_FRAME; ++i) {
RefBuffer *const ref_buf = &cm->frame_refs[i];
#if CONFIG_HIGHBITDEPTH
av1_setup_scale_factors_for_frame(
&ref_buf->sf, ref_buf->buf->y_crop_width,
ref_buf->buf->y_crop_height, cm->width, cm->height,
cm->use_highbitdepth);
#else
av1_setup_scale_factors_for_frame(
&ref_buf->sf, ref_buf->buf->y_crop_width,
ref_buf->buf->y_crop_height, cm->width, cm->height);
#endif
}
}
}
#if CONFIG_FRAME_MARKER
if (cm->show_frame == 0) {
cm->frame_offset = cm->current_video_frame + aom_rb_read_literal(rb, 4);
} else {
cm->frame_offset = cm->current_video_frame;
}
av1_setup_frame_buf_refs(cm);
#if CONFIG_FRAME_SIGN_BIAS
#if CONFIG_OBU
if (cm->frame_type != S_FRAME)
#endif // CONFIG_OBU
av1_setup_frame_sign_bias(cm);
#endif // CONFIG_FRAME_SIGN_BIAS
#endif // CONFIG_FRAME_MARKER
#if CONFIG_TEMPMV_SIGNALING
cm->cur_frame->intra_only = cm->frame_type == KEY_FRAME || cm->intra_only;
#endif
#if CONFIG_REFERENCE_BUFFER
if (cm->seq_params.frame_id_numbers_present_flag) {
/* If bitmask is set, update reference frame id values and
mark frames as valid for reference */
int refresh_frame_flags =
cm->frame_type == KEY_FRAME ? 0xFF : pbi->refresh_frame_flags;
for (i = 0; i < REF_FRAMES; i++) {
if ((refresh_frame_flags >> i) & 1) {
cm->ref_frame_id[i] = cm->current_frame_id;
cm->valid_for_referencing[i] = 1;
}
}
}
#endif // CONFIG_REFERENCE_BUFFER
get_frame_new_buffer(cm)->bit_depth = cm->bit_depth;
get_frame_new_buffer(cm)->color_space = cm->color_space;
#if CONFIG_COLORSPACE_HEADERS
get_frame_new_buffer(cm)->transfer_function = cm->transfer_function;
get_frame_new_buffer(cm)->chroma_sample_position = cm->chroma_sample_position;
#endif
get_frame_new_buffer(cm)->color_range = cm->color_range;
get_frame_new_buffer(cm)->render_width = cm->render_width;
get_frame_new_buffer(cm)->render_height = cm->render_height;
if (pbi->need_resync) {
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Keyframe / intra-only frame required to reset decoder"
" state");
}
#if CONFIG_EXT_TILE
const int might_bwd_adapt =
!(cm->error_resilient_mode || cm->large_scale_tile);
#else
const int might_bwd_adapt = !cm->error_resilient_mode;
#endif // CONFIG_EXT_TILE
if (might_bwd_adapt) {
cm->refresh_frame_context = aom_rb_read_bit(rb)
? REFRESH_FRAME_CONTEXT_FORWARD
: REFRESH_FRAME_CONTEXT_BACKWARD;
} else {
cm->refresh_frame_context = REFRESH_FRAME_CONTEXT_FORWARD;
}
#if !CONFIG_NO_FRAME_CONTEXT_SIGNALING
// This flag will be overridden by the call to av1_setup_past_independence
// below, forcing the use of context 0 for those frame types.
cm->frame_context_idx = aom_rb_read_literal(rb, FRAME_CONTEXTS_LOG2);
#endif
// Generate next_ref_frame_map.
lock_buffer_pool(pool);
for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) {
if (mask & 1) {
cm->next_ref_frame_map[ref_index] = cm->new_fb_idx;
++frame_bufs[cm->new_fb_idx].ref_count;
} else {
cm->next_ref_frame_map[ref_index] = cm->ref_frame_map[ref_index];
}
// Current thread holds the reference frame.
if (cm->ref_frame_map[ref_index] >= 0)
++frame_bufs[cm->ref_frame_map[ref_index]].ref_count;
++ref_index;
}
for (; ref_index < REF_FRAMES; ++ref_index) {
cm->next_ref_frame_map[ref_index] = cm->ref_frame_map[ref_index];
// Current thread holds the reference frame.
if (cm->ref_frame_map[ref_index] >= 0)
++frame_bufs[cm->ref_frame_map[ref_index]].ref_count;
}
unlock_buffer_pool(pool);
pbi->hold_ref_buf = 1;
if (frame_is_intra_only(cm) || cm->error_resilient_mode)
av1_setup_past_independence(cm);
#if CONFIG_INTRABC
if (cm->allow_intrabc && NO_FILTER_FOR_IBC) {
// Set parameters corresponding to no filtering.
struct loopfilter *lf = &cm->lf;
#if CONFIG_LOOPFILTER_LEVEL
lf->filter_level[0] = 0;
lf->filter_level[1] = 0;
#else
lf->filter_level = 0;
#endif
#if CONFIG_CDEF
cm->cdef_bits = 0;
cm->cdef_strengths[0] = 0;
cm->nb_cdef_strengths = 1;
#endif // CONFIG_CDEF
#if CONFIG_LOOP_RESTORATION
cm->rst_info[0].frame_restoration_type = RESTORE_NONE;
cm->rst_info[1].frame_restoration_type = RESTORE_NONE;
cm->rst_info[2].frame_restoration_type = RESTORE_NONE;
#endif // CONFIG_LOOP_RESTORATION
}
#endif // CONFIG_INTRABC
setup_loopfilter(cm, rb);
setup_quantization(cm, rb);
xd->bd = (int)cm->bit_depth;
#if CONFIG_Q_ADAPT_PROBS
av1_default_coef_probs(cm);
if (cm->frame_type == KEY_FRAME || cm->error_resilient_mode ||
cm->reset_frame_context == RESET_FRAME_CONTEXT_ALL) {
for (i = 0; i < FRAME_CONTEXTS; ++i) cm->frame_contexts[i] = *cm->fc;
} else if (cm->reset_frame_context == RESET_FRAME_CONTEXT_CURRENT) {
#if CONFIG_NO_FRAME_CONTEXT_SIGNALING
if (cm->frame_refs[0].idx <= 0) {
cm->frame_contexts[cm->frame_refs[0].idx] = *cm->fc;
}
#else
cm->frame_contexts[cm->frame_context_idx] = *cm->fc;
#endif // CONFIG_NO_FRAME_CONTEXT_SIGNALING
}
#endif // CONFIG_Q_ADAPT_PROBS
setup_segmentation(cm, rb);
#if CONFIG_Q_SEGMENTATION
setup_q_segmentation(cm, rb);
#endif
{
int delta_q_allowed = 1;
#if !CONFIG_EXT_DELTA_Q
struct segmentation *const seg = &cm->seg;
int segment_quantizer_active = 0;
for (i = 0; i < MAX_SEGMENTS; i++) {
if (segfeature_active(seg, i, SEG_LVL_ALT_Q)) {
segment_quantizer_active = 1;
}
#if CONFIG_Q_SEGMENTATION
if (seg->q_lvls) segment_quantizer_active = 1;
#endif
}
delta_q_allowed = !segment_quantizer_active;
#endif
cm->delta_q_res = 1;
#if CONFIG_EXT_DELTA_Q
cm->delta_lf_res = 1;
cm->delta_lf_present_flag = 0;
#if CONFIG_LOOPFILTER_LEVEL
cm->delta_lf_multi = 0;
#endif // CONFIG_LOOPFILTER_LEVEL
#endif
if (delta_q_allowed == 1 && cm->base_qindex > 0) {
cm->delta_q_present_flag = aom_rb_read_bit(rb);
} else {
cm->delta_q_present_flag = 0;
}
if (cm->delta_q_present_flag) {
xd->prev_qindex = cm->base_qindex;
cm->delta_q_res = 1 << aom_rb_read_literal(rb, 2);
#if CONFIG_EXT_DELTA_Q
cm->delta_lf_present_flag = aom_rb_read_bit(rb);
if (cm->delta_lf_present_flag) {
xd->prev_delta_lf_from_base = 0;
cm->delta_lf_res = 1 << aom_rb_read_literal(rb, 2);
#if CONFIG_LOOPFILTER_LEVEL
cm->delta_lf_multi = aom_rb_read_bit(rb);
for (int lf_id = 0; lf_id < FRAME_LF_COUNT; ++lf_id)
xd->prev_delta_lf[lf_id] = 0;
#endif // CONFIG_LOOPFILTER_LEVEL
}
#endif // CONFIG_EXT_DELTA_Q
}
}
#if CONFIG_AMVR
xd->cur_frame_force_integer_mv = cm->cur_frame_force_integer_mv;
#endif
for (i = 0; i < MAX_SEGMENTS; ++i) {
const int qindex = cm->seg.enabled
#if CONFIG_Q_SEGMENTATION
? av1_get_qindex(&cm->seg, i, i, cm->base_qindex)
#else
? av1_get_qindex(&cm->seg, i, cm->base_qindex)
#endif
: cm->base_qindex;
xd->lossless[i] = qindex == 0 && cm->y_dc_delta_q == 0 &&
cm->u_dc_delta_q == 0 && cm->u_ac_delta_q == 0 &&
cm->v_dc_delta_q == 0 && cm->v_ac_delta_q == 0;
xd->qindex[i] = qindex;
}
cm->all_lossless = all_lossless(cm, xd);
setup_segmentation_dequant(cm);
#if CONFIG_CDEF
if (!cm->all_lossless) {
setup_cdef(cm, rb);
}
#endif
#if CONFIG_LOOP_RESTORATION
decode_restoration_mode(cm, rb);
#endif // CONFIG_LOOP_RESTORATION
cm->tx_mode = read_tx_mode(cm, rb);
cm->reference_mode = read_frame_reference_mode(cm, rb);
if (cm->reference_mode != SINGLE_REFERENCE) setup_compound_reference_mode(cm);
read_compound_tools(cm, rb);
cm->reduced_tx_set_used = aom_rb_read_bit(rb);
#if CONFIG_ADAPT_SCAN
#if CONFIG_EXT_TILE
if (cm->large_scale_tile)
cm->use_adapt_scan = 0;
else
#endif // CONFIG_EXT_TILE
cm->use_adapt_scan = aom_rb_read_bit(rb);
// TODO(angiebird): call av1_init_scan_order only when use_adapt_scan
// switches from 1 to 0
if (cm->use_adapt_scan == 0) av1_init_scan_order(cm);
#endif // CONFIG_ADAPT_SCAN
// NOTE(zoeliu): As cm->prev_frame can take neither a frame of
// show_exisiting_frame=1, nor can it take a frame not used as
// a reference, it is probable that by the time it is being
// referred to, the frame buffer it originally points to may
// already get expired and have been reassigned to the current
// newly coded frame. Hence, we need to check whether this is
// the case, and if yes, we have 2 choices:
// (1) Simply disable the use of previous frame mvs; or
// (2) Have cm->prev_frame point to one reference frame buffer,
// e.g. LAST_FRAME.
if (!dec_is_ref_frame_buf(pbi, cm->prev_frame)) {
// Reassign the LAST_FRAME buffer to cm->prev_frame.
cm->prev_frame =
cm->frame_refs[LAST_FRAME - LAST_FRAME].idx != INVALID_IDX
? &cm->buffer_pool
->frame_bufs[cm->frame_refs[LAST_FRAME - LAST_FRAME].idx]
: NULL;
}
#if CONFIG_TEMPMV_SIGNALING
if (cm->use_prev_frame_mvs && !frame_can_use_prev_frame_mvs(cm)) {
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Frame wrongly requests previous frame MVs");
}
#else
cm->use_prev_frame_mvs = !cm->error_resilient_mode && cm->prev_frame &&
#if CONFIG_FRAME_SUPERRES
cm->width == cm->last_width &&
cm->height == cm->last_height &&
#else
cm->width == cm->prev_frame->buf.y_crop_width &&
cm->height == cm->prev_frame->buf.y_crop_height &&
#endif // CONFIG_FRAME_SUPERRES
!cm->last_intra_only && cm->last_show_frame &&
(cm->last_frame_type != KEY_FRAME);
#endif // CONFIG_TEMPMV_SIGNALING
if (!frame_is_intra_only(cm)) read_global_motion(cm, rb);
read_tile_info(pbi, rb);
if (use_compressed_header(cm)) {
sz = aom_rb_read_literal(rb, 16);
if (sz == 0)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Invalid header size");
} else {
sz = 0;
}
return sz;
}
static int read_compressed_header(AV1Decoder *pbi, const uint8_t *data,
size_t partition_size) {
#if CONFIG_NEW_MULTISYMBOL
(void)pbi;
(void)data;
(void)partition_size;
return 0;
#else
AV1_COMMON *const cm = &pbi->common;
aom_reader r;
#if ((CONFIG_RECT_TX_EXT) || (!CONFIG_NEW_MULTISYMBOL || CONFIG_LV_MAP) || \
(CONFIG_COMPOUND_SINGLEREF))
FRAME_CONTEXT *const fc = cm->fc;
#endif
#if CONFIG_ANS && ANS_MAX_SYMBOLS
r.window_size = 1 << cm->ans_window_size_log2;
#endif
if (aom_reader_init(&r, data, partition_size, pbi->decrypt_cb,
pbi->decrypt_state))
aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
"Failed to allocate bool decoder 0");
#if CONFIG_RECT_TX_EXT
if (cm->tx_mode == TX_MODE_SELECT)
av1_diff_update_prob(&r, &fc->quarter_tx_size_prob, ACCT_STR);
#endif
#if !CONFIG_NEW_MULTISYMBOL
if (cm->tx_mode == TX_MODE_SELECT)
for (int i = 0; i < TXFM_PARTITION_CONTEXTS; ++i)
av1_diff_update_prob(&r, &fc->txfm_partition_prob[i], ACCT_STR);
for (int i = 0; i < SKIP_CONTEXTS; ++i)
av1_diff_update_prob(&r, &fc->skip_probs[i], ACCT_STR);
#if CONFIG_JNT_COMP
for (int i = 0; i < COMP_INDEX_CONTEXTS; ++i)
av1_diff_update_prob(&r, &fc->compound_index_probs[i], ACCT_STR);
#endif // CONFIG_JNT_COMP
#endif
if (!frame_is_intra_only(cm)) {
#if !CONFIG_NEW_MULTISYMBOL
read_inter_mode_probs(fc, &r);
#endif
if (cm->reference_mode != COMPOUND_REFERENCE &&
cm->allow_interintra_compound) {
#if !CONFIG_NEW_MULTISYMBOL
for (int i = 0; i < BLOCK_SIZE_GROUPS; i++) {
if (is_interintra_allowed_bsize_group(i)) {
av1_diff_update_prob(&r, &fc->interintra_prob[i], ACCT_STR);
}
}
#endif
#if !CONFIG_NEW_MULTISYMBOL
#if CONFIG_EXT_PARTITION_TYPES
int block_sizes_to_update = BLOCK_SIZES_ALL;
#else
int block_sizes_to_update = BLOCK_SIZES;
#endif
for (int i = 0; i < block_sizes_to_update; i++) {
if (is_interintra_allowed_bsize(i) && is_interintra_wedge_used(i)) {
av1_diff_update_prob(&r, &fc->wedge_interintra_prob[i], ACCT_STR);
}
}
#endif // !CONFIG_NEW_MULTISYMBOL
}
#if !CONFIG_NEW_MULTISYMBOL
for (int i = 0; i < INTRA_INTER_CONTEXTS; i++)
av1_diff_update_prob(&r, &fc->intra_inter_prob[i], ACCT_STR);
#endif
#if !CONFIG_NEW_MULTISYMBOL
read_frame_reference_mode_probs(cm, &r);
#endif
#if CONFIG_COMPOUND_SINGLEREF
for (int i = 0; i < COMP_INTER_MODE_CONTEXTS; i++)
av1_diff_update_prob(&r, &fc->comp_inter_mode_prob[i], ACCT_STR);
#endif // CONFIG_COMPOUND_SINGLEREF
#if !CONFIG_NEW_MULTISYMBOL
#if CONFIG_AMVR
if (cm->cur_frame_force_integer_mv == 0) {
#endif
for (int i = 0; i < NMV_CONTEXTS; ++i)
read_mv_probs(&fc->nmvc[i], cm->allow_high_precision_mv, &r);
#if CONFIG_AMVR
}
#endif
#endif
}
return aom_reader_has_error(&r);
#endif // CONFIG_NEW_MULTISYMBOL
}
#ifdef NDEBUG
#define debug_check_frame_counts(cm) (void)0
#else // !NDEBUG
// Counts should only be incremented when frame_parallel_decoding_mode and
// error_resilient_mode are disabled.
static void debug_check_frame_counts(const AV1_COMMON *const cm) {
FRAME_COUNTS zero_counts;
av1_zero(zero_counts);
assert(cm->refresh_frame_context != REFRESH_FRAME_CONTEXT_BACKWARD ||
cm->error_resilient_mode);
assert(!memcmp(cm->counts.partition, zero_counts.partition,
sizeof(cm->counts.partition)));
assert(!memcmp(cm->counts.switchable_interp, zero_counts.switchable_interp,
sizeof(cm->counts.switchable_interp)));
assert(!memcmp(cm->counts.inter_compound_mode,
zero_counts.inter_compound_mode,
sizeof(cm->counts.inter_compound_mode)));
assert(!memcmp(cm->counts.interintra, zero_counts.interintra,
sizeof(cm->counts.interintra)));
assert(!memcmp(cm->counts.wedge_interintra, zero_counts.wedge_interintra,
sizeof(cm->counts.wedge_interintra)));
assert(!memcmp(cm->counts.compound_interinter,
zero_counts.compound_interinter,
sizeof(cm->counts.compound_interinter)));
assert(!memcmp(cm->counts.motion_mode, zero_counts.motion_mode,
sizeof(cm->counts.motion_mode)));
assert(!memcmp(cm->counts.intra_inter, zero_counts.intra_inter,
sizeof(cm->counts.intra_inter)));
#if CONFIG_COMPOUND_SINGLEREF
assert(!memcmp(cm->counts.comp_inter_mode, zero_counts.comp_inter_mode,
sizeof(cm->counts.comp_inter_mode)));
#endif // CONFIG_COMPOUND_SINGLEREF
assert(!memcmp(cm->counts.comp_inter, zero_counts.comp_inter,
sizeof(cm->counts.comp_inter)));
#if CONFIG_EXT_COMP_REFS
assert(!memcmp(cm->counts.comp_ref_type, zero_counts.comp_ref_type,
sizeof(cm->counts.comp_ref_type)));
assert(!memcmp(cm->counts.uni_comp_ref, zero_counts.uni_comp_ref,
sizeof(cm->counts.uni_comp_ref)));
#endif // CONFIG_EXT_COMP_REFS
assert(!memcmp(cm->counts.single_ref, zero_counts.single_ref,
sizeof(cm->counts.single_ref)));
assert(!memcmp(cm->counts.comp_ref, zero_counts.comp_ref,
sizeof(cm->counts.comp_ref)));
assert(!memcmp(cm->counts.comp_bwdref, zero_counts.comp_bwdref,
sizeof(cm->counts.comp_bwdref)));
assert(!memcmp(cm->counts.skip, zero_counts.skip, sizeof(cm->counts.skip)));
assert(
!memcmp(&cm->counts.mv[0], &zero_counts.mv[0], sizeof(cm->counts.mv[0])));
assert(
!memcmp(&cm->counts.mv[1], &zero_counts.mv[1], sizeof(cm->counts.mv[0])));
}
#endif // NDEBUG
static struct aom_read_bit_buffer *init_read_bit_buffer(
AV1Decoder *pbi, struct aom_read_bit_buffer *rb, const uint8_t *data,
const uint8_t *data_end, uint8_t clear_data[MAX_AV1_HEADER_SIZE]) {
rb->bit_offset = 0;
rb->error_handler = error_handler;
rb->error_handler_data = &pbi->common;
if (pbi->decrypt_cb) {
const int n = (int)AOMMIN(MAX_AV1_HEADER_SIZE, data_end - data);
pbi->decrypt_cb(pbi->decrypt_state, data, clear_data, n);
rb->bit_buffer = clear_data;
rb->bit_buffer_end = clear_data + n;
} else {
rb->bit_buffer = data;
rb->bit_buffer_end = data_end;
}
return rb;
}
//------------------------------------------------------------------------------
#if CONFIG_FRAME_SIZE
void av1_read_frame_size(struct aom_read_bit_buffer *rb, int num_bits_width,
int num_bits_height, int *width, int *height) {
*width = aom_rb_read_literal(rb, num_bits_width) + 1;
*height = aom_rb_read_literal(rb, num_bits_height) + 1;
#else
void av1_read_frame_size(struct aom_read_bit_buffer *rb, int *width,
int *height) {
*width = aom_rb_read_literal(rb, 16) + 1;
*height = aom_rb_read_literal(rb, 16) + 1;
#endif
}
BITSTREAM_PROFILE av1_read_profile(struct aom_read_bit_buffer *rb) {
int profile = aom_rb_read_bit(rb);
profile |= aom_rb_read_bit(rb) << 1;
if (profile > 2) profile += aom_rb_read_bit(rb);
return (BITSTREAM_PROFILE)profile;
}
static void make_update_tile_list_dec(AV1Decoder *pbi, int start_tile,
int num_tile, FRAME_CONTEXT *ec_ctxs[]) {
int i;
for (i = start_tile; i < start_tile + num_tile; ++i)
ec_ctxs[i - start_tile] = &pbi->tile_data[i].tctx;
}
#if CONFIG_FRAME_SUPERRES
void superres_post_decode(AV1Decoder *pbi) {
AV1_COMMON *const cm = &pbi->common;
BufferPool *const pool = cm->buffer_pool;
if (av1_superres_unscaled(cm)) return;
lock_buffer_pool(pool);
av1_superres_upscale(cm, pool);
unlock_buffer_pool(pool);
}
#endif // CONFIG_FRAME_SUPERRES
static void dec_setup_frame_boundary_info(AV1_COMMON *const cm) {
// Note: When LOOPFILTERING_ACROSS_TILES is enabled, we need to clear the
// boundary information every frame, since the tile boundaries may
// change every frame (particularly when dependent-horztiles is also
// enabled); when it is disabled, the only information stored is the frame
// boundaries, which only depend on the frame size.
#if !CONFIG_LOOPFILTERING_ACROSS_TILES
if (cm->width != cm->last_width || cm->height != cm->last_height)
#endif // CONFIG_LOOPFILTERING_ACROSS_TILES
{
int row, col;
for (row = 0; row < cm->mi_rows; ++row) {
MODE_INFO *mi = cm->mi + row * cm->mi_stride;
for (col = 0; col < cm->mi_cols; ++col) {
mi->mbmi.boundary_info = 0;
mi++;
}
}
av1_setup_frame_boundary_info(cm);
}
}
size_t av1_decode_frame_headers_and_setup(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end,
const uint8_t **p_data_end) {
AV1_COMMON *const cm = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
struct aom_read_bit_buffer rb;
uint8_t clear_data[MAX_AV1_HEADER_SIZE];
size_t first_partition_size;
YV12_BUFFER_CONFIG *new_fb;
RefBuffer *last_fb_ref_buf = &cm->frame_refs[LAST_FRAME - LAST_FRAME];
#if CONFIG_ADAPT_SCAN
av1_deliver_eob_threshold(cm, xd);
#endif
#if CONFIG_BITSTREAM_DEBUG
bitstream_queue_set_frame_read(cm->current_video_frame * 2 + cm->show_frame);
#endif
int i;
for (i = LAST_FRAME; i <= ALTREF_FRAME; ++i) {
cm->global_motion[i] = default_warp_params;
cm->cur_frame->global_motion[i] = default_warp_params;
}
xd->global_motion = cm->global_motion;
first_partition_size = read_uncompressed_header(
pbi, init_read_bit_buffer(pbi, &rb, data, data_end, clear_data));
#if CONFIG_EXT_TILE
// If cm->single_tile_decoding = 0, the independent decoding of a single tile
// or a section of a frame is not allowed.
if (!cm->single_tile_decoding &&
(pbi->dec_tile_row >= 0 || pbi->dec_tile_col >= 0)) {
pbi->dec_tile_row = -1;
pbi->dec_tile_col = -1;
}
#endif // CONFIG_EXT_TILE
pbi->first_partition_size = first_partition_size;
pbi->uncomp_hdr_size = aom_rb_bytes_read(&rb);
new_fb = get_frame_new_buffer(cm);
xd->cur_buf = new_fb;
#if CONFIG_INTRABC
#if CONFIG_HIGHBITDEPTH
av1_setup_scale_factors_for_frame(
&xd->sf_identity, xd->cur_buf->y_crop_width, xd->cur_buf->y_crop_height,
xd->cur_buf->y_crop_width, xd->cur_buf->y_crop_height,
cm->use_highbitdepth);
#else
av1_setup_scale_factors_for_frame(
&xd->sf_identity, xd->cur_buf->y_crop_width, xd->cur_buf->y_crop_height,
xd->cur_buf->y_crop_width, xd->cur_buf->y_crop_height);
#endif // CONFIG_HIGHBITDEPTH
#endif // CONFIG_INTRABC
if (cm->show_existing_frame) {
// showing a frame directly
*p_data_end = data + aom_rb_bytes_read(&rb);
return 0;
}
data += aom_rb_bytes_read(&rb);
if (first_partition_size)
if (!read_is_valid(data, first_partition_size, data_end))
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt header length");
cm->setup_mi(cm);
// NOTE(zoeliu): As cm->prev_frame can take neither a frame of
// show_exisiting_frame=1, nor can it take a frame not used as
// a reference, it is probable that by the time it is being
// referred to, the frame buffer it originally points to may
// already get expired and have been reassigned to the current
// newly coded frame. Hence, we need to check whether this is
// the case, and if yes, we have 2 choices:
// (1) Simply disable the use of previous frame mvs; or
// (2) Have cm->prev_frame point to one reference frame buffer,
// e.g. LAST_FRAME.
if (!dec_is_ref_frame_buf(pbi, cm->prev_frame)) {
// Reassign the LAST_FRAME buffer to cm->prev_frame.
cm->prev_frame = last_fb_ref_buf->idx != INVALID_IDX
? &cm->buffer_pool->frame_bufs[last_fb_ref_buf->idx]
: NULL;
}
#if CONFIG_TEMPMV_SIGNALING
if (cm->use_prev_frame_mvs && !frame_can_use_prev_frame_mvs(cm)) {
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Frame wrongly requests previous frame MVs");
}
#else
cm->use_prev_frame_mvs = !cm->error_resilient_mode && cm->prev_frame &&
#if CONFIG_FRAME_SUPERRES
cm->width == cm->last_width &&
cm->height == cm->last_height &&
#else
cm->width == cm->prev_frame->buf.y_crop_width &&
cm->height == cm->prev_frame->buf.y_crop_height &&
#endif // CONFIG_FRAME_SUPERRES
!cm->last_intra_only && cm->last_show_frame &&
(cm->last_frame_type != KEY_FRAME);
#endif // CONFIG_TEMPMV_SIGNALING
#if CONFIG_EXT_SKIP
av1_setup_skip_mode_allowed(cm);
#if 0
printf("\nDECODER: Frame=%d, frame_offset=%d, show_frame=%d, "
"is_skip_mode_allowed=%d, ref_frame_idx=(%d,%d)\n",
cm->current_video_frame, cm->frame_offset, cm->show_frame,
cm->is_skip_mode_allowed, cm->ref_frame_idx_0, cm->ref_frame_idx_1);
#endif // 0
#endif // CONFIG_EXT_SKIP
#if CONFIG_MFMV
av1_setup_motion_field(cm);
#endif // CONFIG_MFMV
av1_setup_block_planes(xd, cm->subsampling_x, cm->subsampling_y);
#if CONFIG_NO_FRAME_CONTEXT_SIGNALING
if (cm->error_resilient_mode || frame_is_intra_only(cm)) {
// use the default frame context values
*cm->fc = cm->frame_contexts[FRAME_CONTEXT_DEFAULTS];
cm->pre_fc = &cm->frame_contexts[FRAME_CONTEXT_DEFAULTS];
} else {
*cm->fc = cm->frame_contexts[cm->frame_refs[0].idx];
cm->pre_fc = &cm->frame_contexts[cm->frame_refs[0].idx];
}
#else
*cm->fc = cm->frame_contexts[cm->frame_context_idx];
cm->pre_fc = &cm->frame_contexts[cm->frame_context_idx];
#endif // CONFIG_NO_FRAME_CONTEXT_SIGNALING
if (!cm->fc->initialized)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Uninitialized entropy context.");
av1_zero(cm->counts);
xd->corrupted = 0;
if (first_partition_size) {
new_fb->corrupted = read_compressed_header(pbi, data, first_partition_size);
if (new_fb->corrupted)
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Decode failed. Frame data header is corrupted.");
}
return first_partition_size;
}
// Once-per-frame initialization
static void setup_frame_info(AV1Decoder *pbi) {
AV1_COMMON *const cm = &pbi->common;
#if CONFIG_LOOP_RESTORATION
if (cm->rst_info[0].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[1].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[2].frame_restoration_type != RESTORE_NONE) {
av1_alloc_restoration_buffers(cm);
}
#endif
#if !CONFIG_LOOPFILTER_LEVEL
if (cm->lf.filter_level && !cm->skip_loop_filter) {
av1_loop_filter_frame_init(cm, cm->lf.filter_level, cm->lf.filter_level);
}
#endif
// If encoded in frame parallel mode, frame context is ready after decoding
// the frame header.
if (cm->frame_parallel_decode &&
cm->refresh_frame_context != REFRESH_FRAME_CONTEXT_BACKWARD) {
AVxWorker *const worker = pbi->frame_worker_owner;
FrameWorkerData *const frame_worker_data = worker->data1;
if (cm->refresh_frame_context == REFRESH_FRAME_CONTEXT_FORWARD) {
#if CONFIG_NO_FRAME_CONTEXT_SIGNALING
cm->frame_contexts[cm->new_fb_idx] = *cm->fc;
#else
cm->frame_contexts[cm->frame_context_idx] = *cm->fc;
#endif // CONFIG_NO_FRAME_CONTEXT_SIGNALING
}
av1_frameworker_lock_stats(worker);
pbi->cur_buf->row = -1;
pbi->cur_buf->col = -1;
frame_worker_data->frame_context_ready = 1;
// Signal the main thread that context is ready.
av1_frameworker_signal_stats(worker);
av1_frameworker_unlock_stats(worker);
}
dec_setup_frame_boundary_info(cm);
}
void av1_decode_tg_tiles_and_wrapup(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end,
const uint8_t **p_data_end, int startTile,
int endTile, int initialize_flag) {
AV1_COMMON *const cm = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
if (initialize_flag) setup_frame_info(pbi);
#if CONFIG_OBU
*p_data_end = decode_tiles(pbi, data, data_end, startTile, endTile);
#else
*p_data_end =
decode_tiles(pbi, data + pbi->uncomp_hdr_size + pbi->first_partition_size,
data_end, startTile, endTile);
#endif
if (endTile != cm->tile_rows * cm->tile_cols - 1) {
return;
}
#if CONFIG_STRIPED_LOOP_RESTORATION
#if CONFIG_FRAME_SUPERRES && CONFIG_HORZONLY_FRAME_SUPERRES
if (!av1_superres_unscaled(cm)) aom_extend_frame_borders(&pbi->cur_buf->buf);
#endif
if (cm->rst_info[0].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[1].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[2].frame_restoration_type != RESTORE_NONE) {
av1_loop_restoration_save_boundary_lines(&pbi->cur_buf->buf, cm, 0);
}
#endif
#if CONFIG_CDEF
if (!cm->skip_loop_filter &&
#if CONFIG_INTRABC
!(cm->allow_intrabc && NO_FILTER_FOR_IBC) &&
#endif // CONFIG_INTRABC
!cm->all_lossless) {
av1_cdef_frame(&pbi->cur_buf->buf, cm, &pbi->mb);
}
#endif // CONFIG_CDEF
#if CONFIG_FRAME_SUPERRES
superres_post_decode(pbi);
#endif // CONFIG_FRAME_SUPERRES
#if CONFIG_LOOP_RESTORATION
if (cm->rst_info[0].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[1].frame_restoration_type != RESTORE_NONE ||
cm->rst_info[2].frame_restoration_type != RESTORE_NONE) {
#if CONFIG_STRIPED_LOOP_RESTORATION
av1_loop_restoration_save_boundary_lines(&pbi->cur_buf->buf, cm, 1);
#endif
av1_loop_restoration_filter_frame((YV12_BUFFER_CONFIG *)xd->cur_buf, cm,
cm->rst_info, 7, NULL);
}
#endif // CONFIG_LOOP_RESTORATION
if (!xd->corrupted) {
if (cm->refresh_frame_context == REFRESH_FRAME_CONTEXT_BACKWARD) {
#if CONFIG_SIMPLE_BWD_ADAPT
const int num_bwd_ctxs = 1;
#else
const int num_bwd_ctxs = cm->tile_rows * cm->tile_cols;
#endif
FRAME_CONTEXT **tile_ctxs =
aom_malloc(num_bwd_ctxs * sizeof(&pbi->tile_data[0].tctx));
aom_cdf_prob **cdf_ptrs = aom_malloc(
num_bwd_ctxs * sizeof(&pbi->tile_data[0].tctx.partition_cdf[0][0]));
#if CONFIG_SIMPLE_BWD_ADAPT
make_update_tile_list_dec(pbi, cm->largest_tile_id, num_bwd_ctxs,
tile_ctxs);
#else
make_update_tile_list_dec(pbi, 0, num_bwd_ctxs, tile_ctxs);
#endif
#if CONFIG_SYMBOLRATE
av1_dump_symbol_rate(cm);
#endif
av1_adapt_intra_frame_probs(cm);
av1_average_tile_coef_cdfs(pbi->common.fc, tile_ctxs, cdf_ptrs,
num_bwd_ctxs);
av1_average_tile_intra_cdfs(pbi->common.fc, tile_ctxs, cdf_ptrs,
num_bwd_ctxs);
av1_average_tile_loopfilter_cdfs(pbi->common.fc, tile_ctxs, cdf_ptrs,
num_bwd_ctxs);
#if CONFIG_ADAPT_SCAN
av1_adapt_scan_order(cm);
#endif // CONFIG_ADAPT_SCAN
if (!frame_is_intra_only(cm)) {
av1_adapt_inter_frame_probs(cm);
#if !CONFIG_NEW_MULTISYMBOL
av1_adapt_mv_probs(cm, cm->allow_high_precision_mv);
#endif
av1_average_tile_inter_cdfs(&pbi->common, pbi->common.fc, tile_ctxs,
cdf_ptrs, num_bwd_ctxs);
av1_average_tile_mv_cdfs(pbi->common.fc, tile_ctxs, cdf_ptrs,
num_bwd_ctxs);
}
aom_free(tile_ctxs);
aom_free(cdf_ptrs);
} else {
debug_check_frame_counts(cm);
}
} else {
aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
"Decode failed. Frame data is corrupted.");
}
#if CONFIG_INSPECTION
if (pbi->inspect_cb != NULL) {
(*pbi->inspect_cb)(pbi, pbi->inspect_ctx);
}
#endif
// Non frame parallel update frame context here.
#if CONFIG_EXT_TILE
if (!cm->large_scale_tile) {
#endif // CONFIG_EXT_TILE
// TODO(yunqingwang): If cm->frame_parallel_decode = 0, then the following
// update always happens. Seems it is done more than necessary.
if (!cm->frame_parallel_decode ||
cm->refresh_frame_context != REFRESH_FRAME_CONTEXT_FORWARD) {
#if CONFIG_NO_FRAME_CONTEXT_SIGNALING
cm->frame_contexts[cm->new_fb_idx] = *cm->fc;
#else
if (!cm->error_resilient_mode)
cm->frame_contexts[cm->frame_context_idx] = *cm->fc;
#endif
}
#if CONFIG_EXT_TILE
}
#endif // CONFIG_EXT_TILE
}
#if CONFIG_OBU
static OBU_TYPE read_obu_header(struct aom_read_bit_buffer *rb,
size_t *header_size) {
OBU_TYPE obu_type;
int obu_extension_flag;
*header_size = 1;
// first bit is obu_forbidden_bit (0) according to R19
aom_rb_read_bit(rb);
obu_type = (OBU_TYPE)aom_rb_read_literal(rb, 4);
aom_rb_read_literal(rb, 2); // reserved
obu_extension_flag = aom_rb_read_bit(rb);
if (obu_extension_flag) {
*header_size += 1;
aom_rb_read_literal(rb, 3); // temporal_id
aom_rb_read_literal(rb, 2);
aom_rb_read_literal(rb, 2);
aom_rb_read_literal(rb, 1); // reserved
}
return obu_type;
}
static uint32_t read_temporal_delimiter_obu() { return 0; }
static uint32_t read_sequence_header_obu(AV1Decoder *pbi,
struct aom_read_bit_buffer *rb) {
AV1_COMMON *const cm = &pbi->common;
uint32_t saved_bit_offset = rb->bit_offset;
cm->profile = av1_read_profile(rb);
aom_rb_read_literal(rb, 4); // level
read_sequence_header(&cm->seq_params, rb);
read_bitdepth_colorspace_sampling(cm, rb, pbi->allow_lowbitdepth);
return ((rb->bit_offset - saved_bit_offset + 7) >> 3);
}
static uint32_t read_frame_header_obu(AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end,
const uint8_t **p_data_end) {
size_t header_size;
header_size =
av1_decode_frame_headers_and_setup(pbi, data, data_end, p_data_end);
return (uint32_t)(pbi->uncomp_hdr_size + header_size);
}
static uint32_t read_tile_group_header(AV1Decoder *pbi,
struct aom_read_bit_buffer *rb,
int *startTile, int *endTile) {
AV1_COMMON *const cm = &pbi->common;
uint32_t saved_bit_offset = rb->bit_offset;
*startTile = aom_rb_read_literal(rb, cm->log2_tile_rows + cm->log2_tile_cols);
*endTile = aom_rb_read_literal(rb, cm->log2_tile_rows + cm->log2_tile_cols);
return ((rb->bit_offset - saved_bit_offset + 7) >> 3);
}
static uint32_t read_one_tile_group_obu(AV1Decoder *pbi,
struct aom_read_bit_buffer *rb,
int is_first_tg, const uint8_t *data,
const uint8_t *data_end,
const uint8_t **p_data_end,
int *is_last_tg) {
AV1_COMMON *const cm = &pbi->common;
int startTile, endTile;
uint32_t header_size, tg_payload_size;
header_size = read_tile_group_header(pbi, rb, &startTile, &endTile);
data += header_size;
av1_decode_tg_tiles_and_wrapup(pbi, data, data_end, p_data_end, startTile,
endTile, is_first_tg);
tg_payload_size = (uint32_t)(*p_data_end - data);
// TODO(shan): For now, assume all tile groups received in order
*is_last_tg = endTile == cm->tile_rows * cm->tile_cols - 1;
return header_size + tg_payload_size;
}
static void read_metadata_private_data(const uint8_t *data, size_t sz) {
for (size_t i = 0; i < sz; i++) {
mem_get_le16(data);
data += 2;
}
}
static void read_metadata_hdr_cll(const uint8_t *data) {
mem_get_le16(data);
mem_get_le16(data + 2);
}
static void read_metadata_hdr_mdcv(const uint8_t *data) {
int i;
for (i = 0; i < 3; i++) {
mem_get_le16(data);
data += 2;
mem_get_le16(data);
data += 2;
}
mem_get_le16(data);
data += 2;
mem_get_le16(data);
data += 2;
mem_get_le16(data);
data += 2;
mem_get_le16(data);
}
static size_t read_metadata(const uint8_t *data, size_t sz) {
METADATA_TYPE metadata_type;
assert(sz >= 2);
metadata_type = (METADATA_TYPE)mem_get_le16(data);
if (metadata_type == METADATA_TYPE_PRIVATE_DATA) {
read_metadata_private_data(data + 2, sz - 2);
} else if (metadata_type == METADATA_TYPE_HDR_CLL) {
read_metadata_hdr_cll(data + 2);
} else if (metadata_type == METADATA_TYPE_HDR_MDCV) {
read_metadata_hdr_mdcv(data + 2);
}
return sz;
}
void av1_decode_frame_from_obus(struct AV1Decoder *pbi, const uint8_t *data,
const uint8_t *data_end,
const uint8_t **p_data_end) {
AV1_COMMON *const cm = &pbi->common;
int frame_decoding_finished = 0;
int is_first_tg_obu_received = 1;
int frame_header_received = 0;
int frame_header_size = 0;
// decode frame as a series of OBUs
while (!frame_decoding_finished && !cm->error.error_code) {
struct aom_read_bit_buffer rb;
uint8_t clear_data[80];
size_t obu_size, obu_header_size, obu_payload_size = 0;
OBU_TYPE obu_type;
init_read_bit_buffer(pbi, &rb, data + PRE_OBU_SIZE_BYTES, data_end,
clear_data);
// every obu is preceded by PRE_OBU_SIZE_BYTES-byte size of obu (obu header +
// payload size)
// The obu size is only needed for tile group OBUs
#if CONFIG_ADD_4BYTES_OBUSIZE
obu_size = mem_get_le32(data);
#else
obu_size = data_end - data;
#endif
obu_type = read_obu_header(&rb, &obu_header_size);
data += (PRE_OBU_SIZE_BYTES + obu_header_size);
switch (obu_type) {
case OBU_TD: obu_payload_size = read_temporal_delimiter_obu(); break;
case OBU_SEQUENCE_HEADER:
obu_payload_size = read_sequence_header_obu(pbi, &rb);
break;
case OBU_FRAME_HEADER:
// Only decode first frame header received
if (!frame_header_received) {
frame_header_size = obu_payload_size =
read_frame_header_obu(pbi, data, data_end, p_data_end);
frame_header_received = 1;
} else {
obu_payload_size = frame_header_size;
}
if (cm->show_existing_frame) frame_decoding_finished = 1;
break;
case OBU_TILE_GROUP:
obu_payload_size =
read_one_tile_group_obu(pbi, &rb, is_first_tg_obu_received, data,
data + obu_size - obu_header_size,
p_data_end, &frame_decoding_finished);
is_first_tg_obu_received = 0;
break;
case OBU_METADATA:
obu_payload_size = read_metadata(data, obu_size);
break;
default: break;
}
data += obu_payload_size;
}
}
#endif