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 /* I define uint24 here for better understanding */
  34 #ifndef uint24_t
  35 #define uint24_t uint32_t
  36 #endif
  37
  38 /* esds_t */
  39 typedef struct {
  40   uint8_t  version;
  41   uint24_t flags;
  42
  43   /* 0x03 ESDescrTag */
  44   uint16_t ESId;
  45   uint8_t  streamPriority;
  46
  47   /* 0x04 DecConfigDescrTag */
  48   uint8_t  objectTypeId;
  49   uint8_t  streamType;
  50   /* XXX: really streamType is
  51    * only 6bit, followed by:
  52    * 1bit  upStream
  53    * 1bit  reserved
  54    */
  55   uint24_t bufferSizeDB;
  56   uint32_t maxBitrate;
  57   uint32_t avgBitrate;
  58
  59   /* 0x05 DecSpecificDescrTag */
  60   uint8_t  decoderConfigLen;
  61   uint8_t *decoderConfig;
  62
  63   /* 0x06 SLConfigDescrTag */
  64   uint8_t  SLConfigLen;
  65   uint8_t *SLConfig;
  66
  67   /* TODO: add the missing tags,
  68    * I currently have no specs
  69    * for them and doubt they
  70    * are currently needed ::atmos
  71    */
  72
  73 } esds_t;
  74
  75 int mp4_parse_esds(unsigned char *data, int datalen, esds_t *esds);
  76 void mp4_free_esds(esds_t *esds);
  77
  78 #endif /* !__PARSE_MP4_H */
  79