mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/*
|
|
* 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_INTERNAL_H
|
|
#define AVCODEC_CBS_INTERNAL_H
|
|
|
|
#include "avcodec.h"
|
|
#include "cbs.h"
|
|
#include "get_bits.h"
|
|
#include "put_bits.h"
|
|
|
|
|
|
typedef struct CodedBitstreamType {
|
|
enum AVCodecID codec_id;
|
|
|
|
size_t priv_data_size;
|
|
|
|
// Split frag->data into coded bitstream units, creating the
|
|
// frag->units array. Fill data but not content on each unit.
|
|
// header is set if the fragment came from a header block, which
|
|
// may require different parsing for some codecs (e.g. the AVCC
|
|
// header in H.264).
|
|
int (*split_fragment)(CodedBitstreamContext *ctx,
|
|
CodedBitstreamFragment *frag,
|
|
int header);
|
|
|
|
// Read the unit->data bitstream and decompose it, creating
|
|
// unit->content.
|
|
int (*read_unit)(CodedBitstreamContext *ctx,
|
|
CodedBitstreamUnit *unit);
|
|
|
|
// Write the unit->data bitstream from unit->content.
|
|
int (*write_unit)(CodedBitstreamContext *ctx,
|
|
CodedBitstreamUnit *unit);
|
|
|
|
// Read the data from all of frag->units and assemble it into
|
|
// a bitstream for the whole fragment.
|
|
int (*assemble_fragment)(CodedBitstreamContext *ctx,
|
|
CodedBitstreamFragment *frag);
|
|
|
|
// Free the content and data of a single unit.
|
|
void (*free_unit)(CodedBitstreamUnit *unit);
|
|
|
|
// Free the codec internal state.
|
|
void (*close)(CodedBitstreamContext *ctx);
|
|
} CodedBitstreamType;
|
|
|
|
|
|
// Helper functions for trace output.
|
|
|
|
void ff_cbs_trace_header(CodedBitstreamContext *ctx,
|
|
const char *name);
|
|
|
|
void ff_cbs_trace_syntax_element(CodedBitstreamContext *ctx,
|
|
int position, const char *name,
|
|
const char *bitstring, int64_t value);
|
|
|
|
|
|
// Helper functions for read/write of common bitstream elements, including
|
|
// generation of trace output.
|
|
|
|
int ff_cbs_read_unsigned(CodedBitstreamContext *ctx, GetBitContext *gbc,
|
|
int width, const char *name, uint32_t *write_to,
|
|
uint32_t range_min, uint32_t range_max);
|
|
|
|
int ff_cbs_write_unsigned(CodedBitstreamContext *ctx, PutBitContext *pbc,
|
|
int width, const char *name, uint32_t value,
|
|
uint32_t range_min, uint32_t range_max);
|
|
|
|
|
|
extern const CodedBitstreamType ff_cbs_type_h264;
|
|
extern const CodedBitstreamType ff_cbs_type_h265;
|
|
extern const CodedBitstreamType ff_cbs_type_mpeg2;
|
|
|
|
|
|
#endif /* AVCODEC_CBS_INTERNAL_H */
|