libmpdemux/parse_mp4.h

   1 /*
   2  * MP4 file format parser code
   3  *
   4  * Copyright (C) 2002 Felix Buenemann <atmosfear at users.sourceforge.net>
   5  * Code inspired by libmp4 from http://mpeg4ip.sourceforge.net/.
   6  *
   7  * This file is part of MPlayer.
   8  *
   9  * MPlayer is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * MPlayer is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  */
  23
  24 #ifndef MPLAYER_PARSE_MP4_H
  25 #define MPLAYER_PARSE_MP4_H
  26
  27 #include <inttypes.h>
  28
  29 /* one byte tag identifiers */
  30 #define MP4ODescrTag                    0x01
  31 #define MP4IODescrTag                   0x02
  32 #define MP4ESDescrTag                   0x03
  33 #define MP4DecConfigDescrTag            0x04
  34 #define MP4DecSpecificDescrTag          0x05
  35 #define MP4SLConfigDescrTag             0x06
  36 #define MP4ContentIdDescrTag            0x07
  37 #define MP4SupplContentIdDescrTag       0x08
  38 #define MP4IPIPtrDescrTag               0x09
  39 #define MP4IPMPPtrDescrTag              0x0A
  40 #define MP4IPMPDescrTag                 0x0B
  41 #define MP4RegistrationDescrTag         0x0D
  42 #define MP4ESIDIncDescrTag              0x0E
  43 #define MP4ESIDRefDescrTag              0x0F
  44 #define MP4FileIODescrTag               0x10
  45 #define MP4FileODescrTag                0x11
  46 #define MP4ExtProfileLevelDescrTag      0x13
  47 #define MP4ExtDescrTagsStart            0x80
  48 #define MP4ExtDescrTagsEnd              0xFE
  49
  50 /* object type identifiers in the ESDS */
  51 /* See http://gpac.sourceforge.net/tutorial/mediatypes.htm */
  52 /* BIFS stream version 1 */
  53 #define MP4OTI_MPEG4Systems1                                0x01
  54 /* BIFS stream version 2 */
  55 #define MP4OTI_MPEG4Systems2                                0x02
  56 /* MPEG-4 visual stream */
  57 #define MP4OTI_MPEG4Visual                                  0x20
  58 /* MPEG-4 audio stream */
  59 #define MP4OTI_MPEG4Audio                                   0x40
  60 /* MPEG-2 visual streams with various profiles */
  61 #define MP4OTI_MPEG2VisualSimple                            0x60
  62 #define MP4OTI_MPEG2VisualMain                              0x61
  63 #define MP4OTI_MPEG2VisualSNR                               0x62
  64 #define MP4OTI_MPEG2VisualSpatial                           0x63
  65 #define MP4OTI_MPEG2VisualHigh                              0x64
  66 #define MP4OTI_MPEG2Visual422                               0x65
  67 /* MPEG-2 audio stream part 7 ("AAC") with various profiles */
  68 #define MP4OTI_MPEG2AudioMain                               0x66
  69 #define MP4OTI_MPEG2AudioLowComplexity                      0x67
  70 #define MP4OTI_MPEG2AudioScaleableSamplingRate              0x68
  71 /* MPEG-2 audio part 3 ("MP3") */
  72 #define MP4OTI_MPEG2AudioPart3                              0x69
  73 /* MPEG-1 visual visual stream */
  74 #define MP4OTI_MPEG1Visual                                  0x6A
  75 /* MPEG-1 audio stream part 3 ("MP3") */
  76 #define MP4OTI_MPEG1Audio                                   0x6B
  77 /* JPEG visual stream */
  78 #define MP4OTI_JPEG                                         0x6C
  79 /* 3GPP2 */
  80 #define MP4OTI_13kVoice                                     0xE1
  81
  82 /* I define uint24 here for better understanding */
  83 #ifndef uint24_t
  84 #define uint24_t uint32_t
  85 #endif
  86
  87 /* esds_t */
  88 typedef struct {
  89   uint8_t  version;
  90   uint24_t flags;
  91
  92   /* 0x03 ESDescrTag */
  93   uint16_t ESId;
  94   uint8_t  streamPriority;
  95
  96   /* 0x04 DecConfigDescrTag */
  97   uint8_t  objectTypeId;
  98   uint8_t  streamType;
  99   /* XXX: really streamType is
 100    * only 6bit, followed by:
 101    * 1bit  upStream
 102    * 1bit  reserved
 103    */
 104   uint24_t bufferSizeDB;
 105   uint32_t maxBitrate;
 106   uint32_t avgBitrate;
 107
 108   /* 0x05 DecSpecificDescrTag */
 109   uint16_t  decoderConfigLen;
 110   uint8_t *decoderConfig;
 111
 112   /* 0x06 SLConfigDescrTag */
 113   uint8_t  SLConfigLen;
 114   uint8_t *SLConfig;
 115
 116   /* TODO: add the missing tags,
 117    * I currently have no specs
 118    * for them and doubt they
 119    * are currently needed ::atmos
 120    */
 121
 122 } esds_t;
 123
 124 int mp4_parse_esds(unsigned char *data, int datalen, esds_t *esds);
 125 void mp4_free_esds(esds_t *esds);
 126
 127 #endif /* MPLAYER_PARSE_MP4_H */
 128