libavformat/mpeg.h

   1 /*
   2  * MPEG1/2 muxer and demuxer common defines
   3  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef AVFORMAT_MPEG_H
  23 #define AVFORMAT_MPEG_H
  24
  25 #include <stdint.h>
  26 #include "libavutil/intreadwrite.h"
  27
  28 #define PACK_START_CODE             ((unsigned int)0x000001ba)
  29 #define SYSTEM_HEADER_START_CODE    ((unsigned int)0x000001bb)
  30 #define SEQUENCE_END_CODE           ((unsigned int)0x000001b7)
  31 #define PACKET_START_CODE_MASK      ((unsigned int)0xffffff00)
  32 #define PACKET_START_CODE_PREFIX    ((unsigned int)0x00000100)
  33 #define ISO_11172_END_CODE          ((unsigned int)0x000001b9)
  34
  35 /* mpeg2 */
  36 #define PROGRAM_STREAM_MAP 0x1bc
  37 #define PRIVATE_STREAM_1   0x1bd
  38 #define PADDING_STREAM     0x1be
  39 #define PRIVATE_STREAM_2   0x1bf
  40
  41 #define AUDIO_ID 0xc0
  42 #define VIDEO_ID 0xe0
  43 #define AC3_ID   0x80
  44 #define DTS_ID   0x8a
  45 #define LPCM_ID  0xa0
  46 #define SUB_ID   0x20
  47
  48 #define STREAM_TYPE_VIDEO_MPEG1     0x01
  49 #define STREAM_TYPE_VIDEO_MPEG2     0x02
  50 #define STREAM_TYPE_AUDIO_MPEG1     0x03
  51 #define STREAM_TYPE_AUDIO_MPEG2     0x04
  52 #define STREAM_TYPE_PRIVATE_SECTION 0x05
  53 #define STREAM_TYPE_PRIVATE_DATA    0x06
  54 #define STREAM_TYPE_AUDIO_AAC       0x0f
  55 #define STREAM_TYPE_VIDEO_MPEG4     0x10
  56 #define STREAM_TYPE_VIDEO_H264      0x1b
  57
  58 #define STREAM_TYPE_AUDIO_AC3       0x81
  59 #define STREAM_TYPE_AUDIO_DTS       0x8a
  60
  61 static const int lpcm_freq_tab[4] = { 48000, 96000, 44100, 32000 };
  62
  63 /**
  64  * Parse MPEG-PES five-byte timestamp
  65  */
  66 static inline int64_t ff_parse_pes_pts(uint8_t *buf) {
  67     return (int64_t)(*buf & 0x0e) << 29 |
  68             (AV_RB16(buf+1) >> 1) << 15 |
  69              AV_RB16(buf+3) >> 1;
  70 }
  71
  72 #endif /* AVFORMAT_MPEG_H */