githubmirror/FFmpeg

libavformat/mpegts.h
117 строк4 KB
Clément Bœsch
Merge commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb'
21 июн 2016, 22:55
21 июн 2016, 22:558ef57a0
/*
 * MPEG-2 transport stream defines
 * Copyright (c) 2003 Fabrice Bellard
 *
 * 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 AVFORMAT_MPEGTS_H
#define AVFORMAT_MPEGTS_H

#include "avformat.h"

#define TS_FEC_PACKET_SIZE 204
#define TS_DVHS_PACKET_SIZE 192
#define TS_PACKET_SIZE 188
#define TS_MAX_PACKET_SIZE 204

#define NB_PID_MAX 8192
#define MAX_SECTION_SIZE 4096

/* pids */
#define PAT_PID                 0x0000
#define SDT_PID                 0x0011

/* table ids */
#define PAT_TID   0x00
#define PMT_TID   0x02
#define M4OD_TID  0x05
#define SDT_TID   0x42

#define STREAM_TYPE_VIDEO_MPEG1     0x01
#define STREAM_TYPE_VIDEO_MPEG2     0x02
#define STREAM_TYPE_AUDIO_MPEG1     0x03
#define STREAM_TYPE_AUDIO_MPEG2     0x04
#define STREAM_TYPE_PRIVATE_SECTION 0x05
#define STREAM_TYPE_PRIVATE_DATA    0x06
#define STREAM_TYPE_AUDIO_AAC       0x0f
#define STREAM_TYPE_AUDIO_AAC_LATM  0x11
#define STREAM_TYPE_VIDEO_MPEG4     0x10
#define STREAM_TYPE_METADATA        0x15
#define STREAM_TYPE_VIDEO_H264      0x1b
#define STREAM_TYPE_VIDEO_HEVC      0x24
#define STREAM_TYPE_VIDEO_CAVS      0x42
#define STREAM_TYPE_VIDEO_VC1       0xea
#define STREAM_TYPE_VIDEO_DIRAC     0xd1

#define STREAM_TYPE_AUDIO_AC3       0x81
#define STREAM_TYPE_AUDIO_DTS       0x82
#define STREAM_TYPE_AUDIO_TRUEHD    0x83
#define STREAM_TYPE_AUDIO_EAC3      0x87

typedef struct MpegTSContext MpegTSContext;

MpegTSContext *avpriv_mpegts_parse_open(AVFormatContext *s);
int avpriv_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt,
                               const uint8_t *buf, int len);
void avpriv_mpegts_parse_close(MpegTSContext *ts);

typedef struct SLConfigDescr {
    int use_au_start;
    int use_au_end;
    int use_rand_acc_pt;
    int use_padding;
    int use_timestamps;
    int use_idle;
    int timestamp_res;
    int timestamp_len;
    int ocr_len;
    int au_len;
    int inst_bitrate_len;
    int degr_prior_len;
    int au_seq_num_len;
    int packet_seq_num_len;
} SLConfigDescr;

typedef struct Mp4Descr {
    int es_id;
    int dec_config_descr_len;
    uint8_t *dec_config_descr;
    SLConfigDescr sl;
} Mp4Descr;

/**
 * Parse an MPEG-2 descriptor
 * @param[in] fc                    Format context (used for logging only)
 * @param st                        Stream
 * @param stream_type               STREAM_TYPE_xxx
 * @param pp                        Descriptor buffer pointer
 * @param desc_list_end             End of buffer
 * @return <0 to stop processing
 */
int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type,
                              const uint8_t **pp, const uint8_t *desc_list_end,
                              Mp4Descr *mp4_descr, int mp4_descr_count, int pid,
                              MpegTSContext *ts);

/**
 * Check presence of H264 startcode
 * @return <0 to stop processing
 */
int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt);

#endif /* AVFORMAT_MPEGTS_H */