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avcodec/cbs_vp8: Add support for VP8 codec bitstream

This commit adds support for VP8 bitstream read methods to the cbs
codec. This enables the trace_headers bitstream filter to support VP8,
in addition to AV1, H.264, H.265, and VP9. This can be useful for
debugging VP8 stream issues.

The CBS VP8 implements a simple VP8 boolean decoder using GetBitContext
to read the bitstream.

Only the read methods `read_unit` and `split_fragment` are implemented.
The write methods `write_unit` and `assemble_fragment` return the error
code AVERROR_PATCHWELCOME. This is because CBS VP8 write is unlikely to
be used by any applications at the moment. The write methods can be
added later if there is a real need for them.

TESTS: ffmpeg -i fate-suite/vp8/frame_size_change.webm -vcodec copy
-bsf:v trace_headers -f null -

Signed-off-by: Jianhui Dai <jianhui.j.dai@intel.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Dai, Jianhui J 2023-11-13 01:53:35 +00:00 committed by Ronald S. Bultje
parent 5cb8accd09
commit c9fe9fb863
7 changed files with 772 additions and 1 deletions

4
configure vendored
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@ -2471,6 +2471,7 @@ CONFIG_EXTRA="
cbs_h266
cbs_jpeg
cbs_mpeg2
cbs_vp8
cbs_vp9
deflate_wrapper
dirac_parse
@ -2756,6 +2757,7 @@ cbs_h265_select="cbs"
cbs_h266_select="cbs"
cbs_jpeg_select="cbs"
cbs_mpeg2_select="cbs"
cbs_vp8_select="cbs"
cbs_vp9_select="cbs"
deflate_wrapper_deps="zlib"
dirac_parse_select="golomb"
@ -3340,7 +3342,7 @@ h264_redundant_pps_bsf_select="cbs_h264"
hevc_metadata_bsf_select="cbs_h265"
mjpeg2jpeg_bsf_select="jpegtables"
mpeg2_metadata_bsf_select="cbs_mpeg2"
trace_headers_bsf_select="cbs"
trace_headers_bsf_select="cbs cbs_vp8"
vp9_metadata_bsf_select="cbs_vp9"
vvc_metadata_bsf_select="cbs_h266"

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@ -81,6 +81,7 @@ OBJS-$(CONFIG_CBS_H265) += cbs_h2645.o cbs_sei.o h2645_parse.o
OBJS-$(CONFIG_CBS_H266) += cbs_h2645.o cbs_sei.o h2645_parse.o
OBJS-$(CONFIG_CBS_JPEG) += cbs_jpeg.o
OBJS-$(CONFIG_CBS_MPEG2) += cbs_mpeg2.o
OBJS-$(CONFIG_CBS_VP8) += cbs_vp8.o vp8data.o
OBJS-$(CONFIG_CBS_VP9) += cbs_vp9.o
OBJS-$(CONFIG_CRYSTALHD) += crystalhd.o
OBJS-$(CONFIG_DEFLATE_WRAPPER) += zlib_wrapper.o

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@ -50,6 +50,9 @@ static const CodedBitstreamType *const cbs_type_table[] = {
#if CONFIG_CBS_MPEG2
&ff_cbs_type_mpeg2,
#endif
#if CONFIG_CBS_VP8
&ff_cbs_type_vp8,
#endif
#if CONFIG_CBS_VP9
&ff_cbs_type_vp9,
#endif
@ -74,6 +77,9 @@ const enum AVCodecID ff_cbs_all_codec_ids[] = {
#if CONFIG_CBS_MPEG2
AV_CODEC_ID_MPEG2VIDEO,
#endif
#if CONFIG_CBS_VP8
AV_CODEC_ID_VP8,
#endif
#if CONFIG_CBS_VP9
AV_CODEC_ID_VP9,
#endif

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@ -341,6 +341,7 @@ extern const CodedBitstreamType ff_cbs_type_h265;
extern const CodedBitstreamType ff_cbs_type_h266;
extern const CodedBitstreamType ff_cbs_type_jpeg;
extern const CodedBitstreamType ff_cbs_type_mpeg2;
extern const CodedBitstreamType ff_cbs_type_vp8;
extern const CodedBitstreamType ff_cbs_type_vp9;

380
libavcodec/cbs_vp8.c Normal file
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@ -0,0 +1,380 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/avassert.h"
#include "cbs.h"
#include "cbs_internal.h"
#include "cbs_vp8.h"
#include <stdbool.h>
#define DEFAULT_PROB 0x80
// The probability table is defined in 'vp8data.c'.
extern const uint8_t ff_vp8_token_update_probs[4][8][3][11];
// Implements VP8 boolean decoder using GetBitContext to read the bitstream.
typedef struct CBSVP8BoolDecoder {
GetBitContext *gbc;
uint8_t value;
uint8_t range;
uint8_t count; // Store the number of bits in the `value` buffer.
} CBSVP8BoolDecoder;
static int cbs_vp8_bool_decoder_init(CBSVP8BoolDecoder *decoder, GetBitContext *gbc)
{
av_assert0(decoder);
av_assert0(gbc);
decoder->gbc = gbc;
decoder->value = 0;
decoder->range = 255;
decoder->count = 0;
return 0;
}
static bool cbs_vp8_bool_decoder_fill_value(CBSVP8BoolDecoder *decoder)
{
int bits = 8 - decoder->count;
av_assert0(decoder->count <= 8);
if (decoder->count == 8) {
return true;
}
if (get_bits_left(decoder->gbc) >= bits) {
decoder->value |= get_bits(decoder->gbc, bits);
decoder->count += bits;
}
return (decoder->count == 8);
}
static int cbs_vp8_bool_decoder_read_bool(CBSVP8BoolDecoder *decoder,
const uint8_t prob, uint8_t *output)
{
uint8_t split = 1 + (((decoder->range - 1) * prob) >> 8);
if (!cbs_vp8_bool_decoder_fill_value(decoder)) {
return AVERROR_INVALIDDATA;
}
av_assert0(decoder->count == 8);
if (decoder->value >= split) {
*output = 1;
decoder->range -= split;
decoder->value -= split;
} else {
*output = 0;
decoder->range = split;
}
while (decoder->range < 128) {
decoder->value <<= 1;
decoder->range <<= 1;
--decoder->count;
}
return 0;
}
static int cbs_vp8_bool_decoder_read_literal(CBSVP8BoolDecoder *decoder,
const uint8_t prob,
uint32_t num_bits,
uint32_t *output)
{
int ret = 0;
av_assert0(num_bits <= 32);
*output = 0;
for (; num_bits > 0; --num_bits) {
uint8_t bit_output = 0;
if ((ret = cbs_vp8_bool_decoder_read_bool(decoder, prob,
&bit_output)) != 0) {
return ret;
}
*output = (*output << 1) | bit_output;
}
return 0;
}
static int cbs_vp8_bool_decoder_read_unsigned(
CodedBitstreamContext *ctx, CBSVP8BoolDecoder *bool_decoder, int width,
uint8_t prob, const char *name, const int *subscripts, uint32_t *write_to,
bool trace_enable)
{
int ret = 0;
GetBitContext *gbc = bool_decoder->gbc;
uint32_t value;
CBS_TRACE_READ_START();
av_assert0(width >= 0 && width <= 8);
ret = cbs_vp8_bool_decoder_read_literal(bool_decoder, prob, width, &value);
if (ret != 0) {
return ret;
}
if (trace_enable) {
CBS_TRACE_READ_END();
}
*write_to = value;
return 0;
}
static int cbs_vp8_bool_decoder_read_signed(
CodedBitstreamContext *ctx, CBSVP8BoolDecoder *bool_decoder, int width,
uint8_t prob, const char *name, const int *subscripts, int32_t *write_to)
{
int ret = 0;
GetBitContext *gbc = bool_decoder->gbc;
int32_t value;
uint8_t sign = 0;
CBS_TRACE_READ_START();
av_assert0(width >= 0 && width <= 8);
ret = cbs_vp8_bool_decoder_read_literal(bool_decoder, prob, width, &value);
if (ret != 0) {
return ret;
}
ret = cbs_vp8_bool_decoder_read_bool(bool_decoder, prob, &sign);
if (ret != 0) {
return ret;
}
if (sign) {
value = -value;
}
CBS_TRACE_READ_END();
*write_to = value;
return 0;
}
static int cbs_vp8_read_unsigned_le(CodedBitstreamContext *ctx, GetBitContext *gbc,
int width, const char *name,
const int *subscripts, uint32_t *write_to)
{
int32_t value;
CBS_TRACE_READ_START();
av_assert0(width > 0 && width <= 24);
if (get_bits_left(gbc) < width) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid value: bitstream ended.\n");
return AVERROR_INVALIDDATA;
}
value = get_bits_le(gbc, width);
CBS_TRACE_READ_END();
*write_to = value;
return 0;
}
#define HEADER(name) \
do { \
ff_cbs_trace_header(ctx, name); \
} while (0)
#define CHECK(call) \
do { \
int err = (call); \
if (err < 0) \
return err; \
} while (0)
#define FUNC_NAME(rw, codec, name) cbs_##codec##_##rw##_##name
#define FUNC_VP8(rw, name) FUNC_NAME(rw, vp8, name)
#define FUNC(name) FUNC_VP8(READWRITE, name)
#define SUBSCRIPTS(subs, ...) \
(subs > 0 ? ((int[subs + 1]){subs, __VA_ARGS__}) : NULL)
#define f(width, name) xf(width, name, 0)
// bool [de|en]coder methods.
#define bc_f(width, name) bc_unsigned_subs(width, DEFAULT_PROB, true, name, 0)
#define bc_s(width, name) bc_signed_subs(width, DEFAULT_PROB, name, 0)
#define bc_fs(width, name, subs, ...) \
bc_unsigned_subs(width, DEFAULT_PROB, true, name, subs, __VA_ARGS__)
#define bc_ss(width, name, subs, ...) \
bc_signed_subs(width, DEFAULT_PROB, name, subs, __VA_ARGS__)
// bool [de|en]coder methods for boolean value and disable tracing.
#define bc_b(name) bc_unsigned_subs(1, DEFAULT_PROB, false, name, 0)
#define bc_b_prob(prob, name) bc_unsigned_subs(1, prob, false, name, 0)
#define READ
#define READWRITE read
#define RWContext GetBitContext
#define CBSVP8BoolCodingRW CBSVP8BoolDecoder
#define xf(width, name, subs, ...) \
do { \
uint32_t value; \
CHECK(cbs_vp8_read_unsigned_le(ctx, rw, width, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), &value)); \
current->name = value; \
} while (0)
#define fixed(width, name, value) \
do { \
uint32_t fixed_value; \
CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, 0, &fixed_value, \
value, value)); \
} while (0)
#define bc_unsigned_subs(width, prob, enable_trace, name, subs, ...) \
do { \
uint32_t value; \
CHECK(cbs_vp8_bool_decoder_read_unsigned( \
ctx, bool_coding_rw, width, prob, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), &value, enable_trace)); \
current->name = value; \
} while (0)
#define bc_signed_subs(width, prob, name, subs, ...) \
do { \
int32_t value; \
CHECK(cbs_vp8_bool_decoder_read_signed( \
ctx, bool_coding_rw, width, prob, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), &value)); \
current->name = value; \
} while (0)
#include "cbs_vp8_syntax_template.c"
static int cbs_vp8_split_fragment(CodedBitstreamContext *ctx,
CodedBitstreamFragment *frag, int header)
{
int err;
if (frag->data_size == 0)
return AVERROR_INVALIDDATA;
err = ff_cbs_append_unit_data(frag, 0, frag->data, frag->data_size,
frag->data_ref);
if (err < 0)
return err;
return 0;
}
static int cbs_vp8_read_unit(CodedBitstreamContext *ctx,
CodedBitstreamUnit *unit)
{
VP8RawFrame *frame;
GetBitContext gbc;
CBSVP8BoolDecoder bool_decoder;
int err, pos;
err = ff_cbs_alloc_unit_content(ctx, unit);
if (err < 0)
return err;
frame = unit->content;
// Create GetBitContext for uncompressed header.
err = init_get_bits8_le(&gbc, unit->data, 8 * unit->data_size);
if (err < 0)
return err;
err = cbs_vp8_read_uncompressed_header(ctx, &gbc, frame);
if (err < 0)
return err;
pos = get_bits_count(&gbc);
av_assert0(pos % 8 == 0);
// Create boolean decoder for compressed header.
err = cbs_vp8_bool_decoder_init(&bool_decoder, &gbc);
if (err < 0)
return err;
err = cbs_vp8_read_compressed_header(ctx, &bool_decoder, frame);
if (err < 0)
return err;
pos = get_bits_count(&gbc);
pos /= 8;
av_assert0(pos <= unit->data_size);
frame->data_ref = av_buffer_ref(unit->data_ref);
if (!frame->data_ref)
return AVERROR(ENOMEM);
frame->data = unit->data + pos;
frame->data_size = unit->data_size - pos;
return 0;
}
static int cbs_vp8_write_unit(CodedBitstreamContext *ctx,
CodedBitstreamUnit *unit, PutBitContext *pbc)
{
return AVERROR_PATCHWELCOME;
}
static int cbs_vp8_assemble_fragment(CodedBitstreamContext *ctx,
CodedBitstreamFragment *frag)
{
return AVERROR_PATCHWELCOME;
}
static void cbs_vp8_flush(CodedBitstreamContext *ctx)
{
// Do nothing.
}
static const CodedBitstreamUnitTypeDescriptor cbs_vp8_unit_types[] = {
CBS_UNIT_TYPE_INTERNAL_REF(0, VP8RawFrame, data),
CBS_UNIT_TYPE_END_OF_LIST,
};
const CodedBitstreamType ff_cbs_type_vp8 = {
.codec_id = AV_CODEC_ID_VP8,
.priv_data_size = 0,
.unit_types = cbs_vp8_unit_types,
.split_fragment = &cbs_vp8_split_fragment,
.read_unit = &cbs_vp8_read_unit,
.write_unit = &cbs_vp8_write_unit,
.flush = &cbs_vp8_flush,
.assemble_fragment = &cbs_vp8_assemble_fragment,
};

133
libavcodec/cbs_vp8.h Normal file
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@ -0,0 +1,133 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_CBS_VP8_H
#define AVCODEC_CBS_VP8_H
#include <stddef.h>
#include <stdint.h>
#include "cbs.h"
enum {
VP8_START_CODE_0 = 0x9D,
VP8_START_CODE_1 = 0x01,
VP8_START_CODE_2 = 0x2A,
};
enum {
VP8_KEY_FRAME = 0,
VP8_NON_KEY_FRAME = 1,
};
typedef struct VP8RawFrameHeader {
// frame tag
uint8_t frame_type;
uint8_t profile;
uint8_t show_frame;
uint32_t first_partition_length_in_bytes;
uint16_t width;
uint8_t horizontal_scale;
uint16_t height;
uint8_t vertical_scale;
// frame header
uint8_t color_space;
uint8_t clamping_type;
// segmentation
uint8_t segmentation_enable;
uint8_t update_segment_map;
uint8_t update_segment_feature_data;
uint8_t segment_feature_mode;
uint8_t segment_qp_update[4];
int8_t segment_qp[4];
uint8_t segment_loop_filter_level_update[4];
int8_t segment_loop_filter_level[4];
uint8_t segment_probs_update[3];
uint8_t segment_probs[3];
// loop filter
uint8_t loop_filter_type;
uint8_t loop_filter_level;
uint8_t loop_filter_sharpness;
uint8_t mode_ref_lf_delta_enable;
uint8_t mode_ref_lf_delta_update;
uint8_t ref_lf_deltas_update[4];
int8_t ref_lf_deltas[4];
uint8_t mode_lf_deltas_update[4];
int8_t mode_lf_deltas[4];
uint8_t log2_token_partitions;
// qp
uint8_t base_qindex;
uint8_t y1dc_delta_q_present;
int8_t y1dc_delta_q;
uint8_t y2dc_delta_q_present;
int8_t y2dc_delta_q;
uint8_t y2ac_delta_q_present;
int8_t y2ac_delta_q;
uint8_t uvdc_delta_q_present;
int8_t uvdc_delta_q;
uint8_t uvac_delta_q_present;
int8_t uvac_delta_q;
// ref
uint8_t refresh_golden_frame;
uint8_t refresh_alternate_frame;
uint8_t copy_buffer_to_golden;
uint8_t copy_buffer_to_alternate;
uint8_t ref_frame_sign_bias_golden;
uint8_t ref_frame_sign_bias_alternate;
uint8_t refresh_last_frame;
uint8_t refresh_entropy_probs;
// token probs
uint8_t coeff_prob_update[4][8][3][11];
uint8_t coeff_prob[4][8][3][11];
uint8_t mb_no_skip_coeff;
uint8_t prob_skip_false;
uint8_t prob_intra;
uint8_t prob_last;
uint8_t prob_golden;
uint8_t intra_16x16_prob_update;
uint8_t intra_16x16_prob[4];
uint8_t intra_chrome_prob_update;
uint8_t intra_chrome_prob[3];
// mv probs
uint8_t mv_prob_update[2][19];
uint8_t mv_prob[2][19];
} VP8RawFrameHeader;
typedef struct VP8RawFrame {
VP8RawFrameHeader header;
uint8_t *data;
AVBufferRef *data_ref;
size_t data_size;
} VP8RawFrame;
#endif /* AVCODEC_CBS_VP8_H */

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@ -0,0 +1,248 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
static int FUNC(update_segmentation)(CodedBitstreamContext *ctx,
CBSVP8BoolCodingRW *bool_coding_rw,
VP8RawFrameHeader *current)
{
bc_f(1, update_segment_map);
bc_f(1, update_segment_feature_data);
if (current->update_segment_feature_data) {
bc_f(1, segment_feature_mode);
// quantizer
for (int i = 0; i < 4; i++) {
bc_b(segment_qp_update[i]);
if (current->segment_qp_update[i])
bc_ss(7, segment_qp[i], 1, i);
}
// loop filter
for (int i = 0; i < 4; i++) {
bc_b(segment_loop_filter_level_update[i]);
if (current->segment_loop_filter_level_update[i])
bc_ss(6, segment_loop_filter_level[i], 1, i);
}
}
if (current->update_segment_map) {
for (int i = 0; i < 3; i++) {
bc_b(segment_probs_update[i]);
if (current->segment_probs_update[i])
bc_fs(8, segment_probs[i], 1, i);
}
}
return 0;
}
static int FUNC(mode_ref_lf_deltas)(CodedBitstreamContext *ctx,
CBSVP8BoolCodingRW *bool_coding_rw,
VP8RawFrameHeader *current)
{
bc_f(1, mode_ref_lf_delta_enable);
if (current->mode_ref_lf_delta_enable) {
bc_b(mode_ref_lf_delta_update);
if (current->mode_ref_lf_delta_update) {
// ref_lf_deltas
for (int i = 0; i < 4; i++) {
bc_b(ref_lf_deltas_update[i]);
if (current->ref_lf_deltas_update[i])
bc_ss(6, ref_lf_deltas[i], 1, i);
}
// mode_lf_deltas
for (int i = 0; i < 4; i++) {
bc_b(mode_lf_deltas_update[i]);
if (current->mode_lf_deltas_update[i])
bc_ss(6, mode_lf_deltas[i], 1, i);
}
}
}
return 0;
}
static int FUNC(quantization_params)(CodedBitstreamContext *ctx,
CBSVP8BoolCodingRW *bool_coding_rw,
VP8RawFrameHeader *current)
{
bc_f(7, base_qindex);
bc_b(y1dc_delta_q_present);
if (current->y1dc_delta_q_present)
bc_s(4, y1dc_delta_q);
bc_b(y2dc_delta_q_present);
if (current->y2dc_delta_q_present)
bc_s(4, y2dc_delta_q);
bc_b(y2ac_delta_q_present);
if (current->y2ac_delta_q_present)
bc_s(4, y2ac_delta_q);
bc_b(uvdc_delta_q_present);
if (current->uvdc_delta_q_present)
bc_s(4, uvdc_delta_q);
bc_b(uvac_delta_q_present);
if (current->uvac_delta_q_present)
bc_s(4, uvac_delta_q);
return 0;
}
static int FUNC(update_token_probs)(CodedBitstreamContext *ctx,
CBSVP8BoolCodingRW *bool_coding_rw,
VP8RawFrameHeader *current)
{
for (int i = 0; i < 4; ++i) {
for (int j = 0; j < 8; ++j) {
for (int k = 0; k < 3; ++k) {
for (int l = 0; l < 11; ++l) {
bc_b_prob(ff_vp8_token_update_probs[i][j][k][l],
coeff_prob_update[i][j][k][l]);
if (current->coeff_prob_update[i][j][k][l])
bc_fs(8, coeff_prob[i][j][k][l], 4, i, j, k, l);
}
}
}
}
return 0;
}
static int FUNC(update_mv_probs)(CodedBitstreamContext *ctx,
CBSVP8BoolCodingRW *bool_coding_rw,
VP8RawFrameHeader *current)
{
for (int i = 0; i < 2; ++i) {
for (int j = 0; j < 19; ++j) {
bc_b(mv_prob_update[i][j]);
if (current->mv_prob_update[i][j])
bc_fs(7, mv_prob[i][j], 2, i, j);
}
}
return 0;
}
static int FUNC(frame_tag)(CodedBitstreamContext *ctx, RWContext *rw,
VP8RawFrameHeader *current)
{
f(1, frame_type);
f(3, profile);
f(1, show_frame);
f(19, first_partition_length_in_bytes);
if (current->frame_type == VP8_KEY_FRAME) {
fixed(8, start_code_0, VP8_START_CODE_0);
fixed(8, start_code_1, VP8_START_CODE_1);
fixed(8, start_code_2, VP8_START_CODE_2);
f(14, width);
f(2, horizontal_scale);
f(14, height);
f(2, vertical_scale);
}
return 0;
}
static int FUNC(frame_header)(CodedBitstreamContext *ctx,
CBSVP8BoolCodingRW *bool_coding_rw,
VP8RawFrameHeader *current)
{
if (current->frame_type == VP8_KEY_FRAME) {
bc_f(1, color_space);
bc_f(1, clamping_type);
}
bc_f(1, segmentation_enable);
if (current->segmentation_enable)
CHECK(FUNC(update_segmentation)(ctx, bool_coding_rw, current));
bc_f(1, loop_filter_type);
bc_f(6, loop_filter_level);
bc_f(3, loop_filter_sharpness);
CHECK(FUNC(mode_ref_lf_deltas)(ctx, bool_coding_rw, current));
bc_f(2, log2_token_partitions);
CHECK(FUNC(quantization_params)(ctx, bool_coding_rw, current));
if (current->frame_type != VP8_KEY_FRAME) {
bc_f(1, refresh_golden_frame);
bc_f(1, refresh_alternate_frame);
if (!current->refresh_golden_frame)
bc_f(2, copy_buffer_to_golden);
if (!current->refresh_alternate_frame)
bc_f(2, copy_buffer_to_alternate);
bc_f(1, ref_frame_sign_bias_golden);
bc_f(1, ref_frame_sign_bias_alternate);
}
bc_f(1, refresh_entropy_probs);
if (current->frame_type != VP8_KEY_FRAME)
bc_f(1, refresh_last_frame);
CHECK(FUNC(update_token_probs)(ctx, bool_coding_rw, current));
bc_f(1, mb_no_skip_coeff);
if (current->mb_no_skip_coeff)
bc_f(8, prob_skip_false);
if (current->frame_type != VP8_KEY_FRAME) {
bc_f(8, prob_intra);
bc_f(8, prob_last);
bc_f(8, prob_golden);
// intra_16x16_prob
bc_b(intra_16x16_prob_update);
if (current->intra_16x16_prob_update)
for (int i = 0; i < 4; i++)
bc_fs(8, intra_16x16_prob[i], 1, i);
// intra_chroma_prob
bc_b(intra_chrome_prob_update);
if (current->intra_chrome_prob_update)
for (int i = 0; i < 3; i++)
bc_fs(8, intra_chrome_prob[i], 1, i);
CHECK(FUNC(update_mv_probs)(ctx, bool_coding_rw, current));
}
return 0;
}
static int FUNC(uncompressed_header)(CodedBitstreamContext *ctx, RWContext *rw,
VP8RawFrame *current)
{
HEADER("Frame");
CHECK(FUNC(frame_tag)(ctx, rw, &current->header));
return 0;
}
static int FUNC(compressed_header)(CodedBitstreamContext *ctx,
CBSVP8BoolCodingRW *bool_coding_rw,
VP8RawFrame *current)
{
CHECK(FUNC(frame_header)(ctx, bool_coding_rw, &current->header));
return 0;
}