libmpdemux/parse_mp4.h

   1 /* parse_mp4.h - Headerfile for MP4 file format parser code
   2  * This file is part of MPlayer, see http://mplayerhq.hu/ for info.
   3  * (c)2002 by Felix Buenemann <atmosfear at users.sourceforge.net>
   4  * File licensed under the GPL, see http://www.fsf.org/ for more info.
   5  */
   6
   7 #ifndef __PARSE_MP4_H
   8 #define __PARSE_MP4_H 1
   9
  10 #include <inttypes.h>
  11
  12 /* one byte tag identifiers */
  13 #define MP4ODescrTag                    0x01
  14 #define MP4IODescrTag                   0x02
  15 #define MP4ESDescrTag                   0x03
  16 #define MP4DecConfigDescrTag            0x04
  17 #define MP4DecSpecificDescrTag          0x05
  18 #define MP4SLConfigDescrTag             0x06
  19 #define MP4ContentIdDescrTag            0x07
  20 #define MP4SupplContentIdDescrTag       0x08
  21 #define MP4IPIPtrDescrTag               0x09
  22 #define MP4IPMPPtrDescrTag              0x0A
  23 #define MP4IPMPDescrTag                 0x0B
  24 #define MP4RegistrationDescrTag         0x0D
  25 #define MP4ESIDIncDescrTag              0x0E
  26 #define MP4ESIDRefDescrTag              0x0F
  27 #define MP4FileIODescrTag               0x10
  28 #define MP4FileODescrTag                0x11
  29 #define MP4ExtProfileLevelDescrTag      0x13
  30 #define MP4ExtDescrTagsStart            0x80
  31 #define MP4ExtDescrTagsEnd              0xFE
  32
  33 /* object type identifiers in the ESDS */
  34 /* See http://gpac.sourceforge.net/tutorial/mediatypes.htm */
  35 /* BIFS stream version 1 */
  36 #define MP4OTI_MPEG4Systems1                                0x01
  37 /* BIFS stream version 2 */
  38 #define MP4OTI_MPEG4Systems2                                0x02
  39 /* MPEG-4 visual stream */
  40 #define MP4OTI_MPEG4Visual                                  0x20
  41 /* MPEG-4 audio stream */
  42 #define MP4OTI_MPEG4Audio                                   0x40
  43 /* MPEG-2 visual streams with various profiles */
  44 #define MP4OTI_MPEG2VisualSimple                            0x60
  45 #define MP4OTI_MPEG2VisualMain                              0x61
  46 #define MP4OTI_MPEG2VisualSNR                               0x62
  47 #define MP4OTI_MPEG2VisualSpatial                           0x63
  48 #define MP4OTI_MPEG2VisualHigh                              0x64
  49 #define MP4OTI_MPEG2Visual422                               0x65
  50 /* MPEG-2 audio stream part 7 ("AAC") with various profiles */
  51 #define MP4OTI_MPEG2AudioMain                               0x66
  52 #define MP4OTI_MPEG2AudioLowComplexity                      0x67
  53 #define MP4OTI_MPEG2AudioScaleableSamplingRate              0x68
  54 /* MPEG-2 audio part 3 ("MP3") */
  55 #define MP4OTI_MPEG2AudioPart3                              0x69
  56 /* MPEG-1 visual visual stream */
  57 #define MP4OTI_MPEG1Visual                                  0x6A
  58 /* MPEG-1 audio stream part 3 ("MP3") */
  59 #define MP4OTI_MPEG1Audio                                   0x6B
  60 /* JPEG visual stream */
  61 #define MP4OTI_JPEG                                         0x6C
  62 /* 3GPP2 */
  63 #define MP4OTI_13kVoice                                     0xE1
  64
  65 /* I define uint24 here for better understanding */
  66 #ifndef uint24_t
  67 #define uint24_t uint32_t
  68 #endif
  69
  70 /* esds_t */
  71 typedef struct {
  72   uint8_t  version;
  73   uint24_t flags;
  74
  75   /* 0x03 ESDescrTag */
  76   uint16_t ESId;
  77   uint8_t  streamPriority;
  78
  79   /* 0x04 DecConfigDescrTag */
  80   uint8_t  objectTypeId;
  81   uint8_t  streamType;
  82   /* XXX: really streamType is
  83    * only 6bit, followed by:
  84    * 1bit  upStream
  85    * 1bit  reserved
  86    */
  87   uint24_t bufferSizeDB;
  88   uint32_t maxBitrate;
  89   uint32_t avgBitrate;
  90
  91   /* 0x05 DecSpecificDescrTag */
  92   uint16_t  decoderConfigLen;
  93   uint8_t *decoderConfig;
  94
  95   /* 0x06 SLConfigDescrTag */
  96   uint8_t  SLConfigLen;
  97   uint8_t *SLConfig;
  98
  99   /* TODO: add the missing tags,
 100    * I currently have no specs
 101    * for them and doubt they
 102    * are currently needed ::atmos
 103    */
 104
 105 } esds_t;
 106
 107 int mp4_parse_esds(unsigned char *data, int datalen, esds_t *esds);
 108 void mp4_free_esds(esds_t *esds);
 109
 110 #endif /* !__PARSE_MP4_H */
 111