root/liboggz/trunk/src/tools/skeleton.h

Revision 3614, 3.1 kB (checked in by conrad, 6 months ago)

oggz-chop: add fishead and fisbone structures for all tracks, initialize
with existing skeleton track if available (else use codec info parsed by
oggz) and update with chop parameters and start_granules.

Line 
1 /*
2  * skeleton.h
3  * author: Tahseen Mohammad
4  */
5
6 #ifndef _SKELETON_H
7 #define _SKELETON_H
8
9 #ifdef __cplusplus
10 extern "C" {
11 #endif
12
13 #include <ogg/ogg.h>
14
15 #define SKELETON_VERSION_MAJOR 3
16 #define SKELETON_VERSION_MINOR 0
17 #define FISHEAD_IDENTIFIER "fishead\0"
18 #define FISBONE_IDENTIFIER "fisbone\0"
19 #define FISHEAD_SIZE 64
20 #define FISBONE_SIZE 52
21 #define FISBONE_MESSAGE_HEADER_OFFSET 44
22
23 /* fishead_packet holds a fishead header packet. */
24 typedef struct {
25     ogg_uint16_t version_major;                             /* skeleton version major */
26     ogg_uint16_t version_minor;                             /* skeleton version minor */
27     /* Start time of the presentation
28      * For a new stream presentationtime & basetime is same. */
29     ogg_int64_t ptime_n;                                    /* presentation time numerator */
30     ogg_int64_t ptime_d;                                    /* presentation time denominator */
31     ogg_int64_t btime_n;                                    /* basetime numerator */
32     ogg_int64_t btime_d;                                    /* basetime denominator */
33     /* will holds the time of origin of the stream, a 20 bit field. */
34     unsigned char UTC[20];
35 } fishead_packet;
36
37 /* fisbone_packet holds a fisbone header packet. */
38 typedef struct {
39     ogg_uint32_t serial_no;                                 /* serial no of the corresponding stream */
40     ogg_uint32_t nr_header_packet;                      /* number of header packets */
41     /* granule rate is the temporal resolution of the logical bitstream */
42     ogg_int64_t granule_rate_n;                            /* granule rate numerator */
43     ogg_int64_t granule_rate_d;                            /* granule rate denominator */
44     ogg_int64_t start_granule;                             /* start granule value */
45     ogg_uint32_t preroll;                                   /* preroll */
46     unsigned char granule_shift;                            /* 1 byte value holding the granule shift */
47     char *message_header_fields;                            /* holds all the message header fields */
48     /* current total size of the message header fields, for realloc purpose, initially zero */
49     ogg_uint32_t current_header_size;
50 } fisbone_packet;
51
52 extern int write_ogg_page_to_file(ogg_page *og, FILE *out);
53 extern int add_message_header_field(fisbone_packet *fp, char *header_key, char *header_value);
54 /* remember to deallocate the returned ogg_packet properly */
55 extern int ogg_from_fishead(fishead_packet *fp,ogg_packet *op);
56 extern int ogg_from_fisbone(fisbone_packet *fp,ogg_packet *op);
57 extern int fisbone_clear(fisbone_packet *fp);
58 extern int fishead_from_ogg(ogg_packet *op,fishead_packet *fp);
59 extern int fisbone_from_ogg(ogg_packet *op,fisbone_packet *fp);
60 extern int fishead_from_ogg_page(const ogg_page *og,fishead_packet *fp);
61 extern int fisbone_from_ogg_page(const ogg_page *og,fisbone_packet *fp);
62 extern int add_fishead_to_stream(ogg_stream_state *os, fishead_packet *fp);
63 extern int add_fisbone_to_stream(ogg_stream_state *os, fisbone_packet *fp);
64 extern int add_eos_packet_to_stream(ogg_stream_state *os);
65 extern int flush_ogg_stream_to_file(ogg_stream_state *os, FILE *out);
66
67 #ifdef __cplusplus
68 }
69 #endif
70
71 #endif  /* _SKELETON_H */
72
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