mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
|
|
* H.264/HEVC common parsing code
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_H2645_PARSE_H
|
|
#define AVCODEC_H2645_PARSE_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "avcodec.h"
|
|
#include "get_bits.h"
|
|
|
|
typedef struct H2645NAL {
|
|
uint8_t *rbsp_buffer;
|
|
int rbsp_buffer_size;
|
|
|
|
int size;
|
|
const uint8_t *data;
|
|
|
|
/**
|
|
* Size, in bits, of just the data, excluding the stop bit and any trailing
|
|
* padding. I.e. what HEVC calls SODB.
|
|
*/
|
|
int size_bits;
|
|
|
|
int raw_size;
|
|
const uint8_t *raw_data;
|
|
|
|
GetBitContext gb;
|
|
|
|
/**
|
|
* NAL unit type
|
|
*/
|
|
int type;
|
|
|
|
/**
|
|
* HEVC only, nuh_temporal_id_plus_1 - 1
|
|
*/
|
|
int temporal_id;
|
|
|
|
/**
|
|
* H.264 only, nal_ref_idc
|
|
*/
|
|
int ref_idc;
|
|
} H2645NAL;
|
|
|
|
/* an input packet split into unescaped NAL units */
|
|
typedef struct H2645Packet {
|
|
H2645NAL *nals;
|
|
int nb_nals;
|
|
int nals_allocated;
|
|
} H2645Packet;
|
|
|
|
/**
|
|
* Extract the raw (unescaped) bitstream.
|
|
*/
|
|
int ff_h2645_extract_rbsp(const uint8_t *src, int length,
|
|
H2645NAL *nal);
|
|
|
|
/**
|
|
* Split an input packet into NAL units.
|
|
*/
|
|
int ff_h2645_packet_split(H2645Packet *pkt, const uint8_t *buf, int length,
|
|
void *logctx, int is_nalff, int nal_length_size,
|
|
enum AVCodecID codec_id);
|
|
|
|
/**
|
|
* Free all the allocated memory in the packet.
|
|
*/
|
|
void ff_h2645_packet_uninit(H2645Packet *pkt);
|
|
|
|
#endif /* AVCODEC_H2645_PARSE_H */
|