blob: 3cf6dbcf79bde643a38bdb11fce107b18bcd5e7b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/* parse_mp4.h - Headerfile for MP4 file format parser code
* This file is part of MPlayer, see http://mplayerhq.hu/ for info.
* (c)2002 by Felix Buenemann <atmosfear at users.sourceforge.net>
* File licensed under the GPL, see http://www.fsf.org/ for more info.
*/
#ifndef __PARSE_MP4_H
#define __PARSE_MP4_H 1
#include <inttypes.h>
/* one byte tag identifiers */
#define MP4ODescrTag 0x01
#define MP4IODescrTag 0x02
#define MP4ESDescrTag 0x03
#define MP4DecConfigDescrTag 0x04
#define MP4DecSpecificDescrTag 0x05
#define MP4SLConfigDescrTag 0x06
#define MP4ContentIdDescrTag 0x07
#define MP4SupplContentIdDescrTag 0x08
#define MP4IPIPtrDescrTag 0x09
#define MP4IPMPPtrDescrTag 0x0A
#define MP4IPMPDescrTag 0x0B
#define MP4RegistrationDescrTag 0x0D
#define MP4ESIDIncDescrTag 0x0E
#define MP4ESIDRefDescrTag 0x0F
#define MP4FileIODescrTag 0x10
#define MP4FileODescrTag 0x11
#define MP4ExtProfileLevelDescrTag 0x13
#define MP4ExtDescrTagsStart 0x80
#define MP4ExtDescrTagsEnd 0xFE
/* object type identifiers in the ESDS */
/* See http://gpac.sourceforge.net/tutorial/mediatypes.htm */
/* BIFS stream version 1 */
#define MP4OTI_MPEG4Systems1 0x01
/* BIFS stream version 2 */
#define MP4OTI_MPEG4Systems2 0x02
/* MPEG-4 visual stream */
#define MP4OTI_MPEG4Visual 0x20
/* MPEG-4 audio stream */
#define MP4OTI_MPEG4Audio 0x40
/* MPEG-2 visual streams with various profiles */
#define MP4OTI_MPEG2VisualSimple 0x60
#define MP4OTI_MPEG2VisualMain 0x61
#define MP4OTI_MPEG2VisualSNR 0x62
#define MP4OTI_MPEG2VisualSpatial 0x63
#define MP4OTI_MPEG2VisualHigh 0x64
#define MP4OTI_MPEG2Visual422 0x65
/* MPEG-2 audio stream part 7 ("AAC") with various profiles */
#define MP4OTI_MPEG2AudioMain 0x66
#define MP4OTI_MPEG2AudioLowComplexity 0x67
#define MP4OTI_MPEG2AudioScaleableSamplingRate 0x68
/* MPEG-2 audio part 3 ("MP3") */
#define MP4OTI_MPEG2AudioPart3 0x69
/* MPEG-1 visual visual stream */
#define MP4OTI_MPEG1Visual 0x6A
/* MPEG-1 audio stream part 3 ("MP3") */
#define MP4OTI_MPEG1Audio 0x6B
/* JPEG visual stream */
#define MP4OTI_JPEG 0x6C
/* I define uint24 here for better understanding */
#ifndef uint24_t
#define uint24_t uint32_t
#endif
/* esds_t */
typedef struct {
uint8_t version;
uint24_t flags;
/* 0x03 ESDescrTag */
uint16_t ESId;
uint8_t streamPriority;
/* 0x04 DecConfigDescrTag */
uint8_t objectTypeId;
uint8_t streamType;
/* XXX: really streamType is
* only 6bit, followed by:
* 1bit upStream
* 1bit reserved
*/
uint24_t bufferSizeDB;
uint32_t maxBitrate;
uint32_t avgBitrate;
/* 0x05 DecSpecificDescrTag */
uint16_t decoderConfigLen;
uint8_t *decoderConfig;
/* 0x06 SLConfigDescrTag */
uint8_t SLConfigLen;
uint8_t *SLConfig;
/* TODO: add the missing tags,
* I currently have no specs
* for them and doubt they
* are currently needed ::atmos
*/
} esds_t;
int mp4_parse_esds(unsigned char *data, int datalen, esds_t *esds);
void mp4_free_esds(esds_t *esds);
#endif /* !__PARSE_MP4_H */
|
