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  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   0x88
  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. #define STREAM_TYPE_VIDEO_CAVS      0x42
  58.  
  59. #define STREAM_TYPE_AUDIO_AC3       0x81
  60. #define STREAM_TYPE_AUDIO_DTS       0x8a
  61.  
  62. static const int lpcm_freq_tab[4] = { 48000, 96000, 44100, 32000 };
  63.  
  64. /**
  65.  * Parse MPEG-PES five-byte timestamp
  66.  */
  67. static inline int64_t ff_parse_pes_pts(const uint8_t *buf) {
  68.     return (int64_t)(*buf & 0x0e) << 29 |
  69.             (AV_RB16(buf+1) >> 1) << 15 |
  70.              AV_RB16(buf+3) >> 1;
  71. }
  72.  
  73. #endif /* AVFORMAT_MPEG_H */
  74.