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/*
* skeleton.h
* author: Tahseen Mohammad
*/
#ifndef _SKELETON_H
#define _SKELETON_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <ogg/ogg.h>
#define SKELETON_VERSION_MAJOR 3
#define SKELETON_VERSION_MINOR 0
#define FISHEAD_IDENTIFIER "fishead\0"
#define FISBONE_IDENTIFIER "fisbone\0"
#define FISHEAD_SIZE 64
#define FISBONE_SIZE 52
#define FISBONE_MESSAGE_HEADER_OFFSET 44
/* fishead_packet holds a fishead header packet. */
typedef struct {
ogg_uint16_t version_major; /* skeleton version major */
ogg_uint16_t version_minor; /* skeleton version minor */
/* Start time of the presentation
* For a new stream presentationtime & basetime is same. */
ogg_int64_t ptime_n; /* presentation time numerator */
ogg_int64_t ptime_d; /* presentation time denominator */
ogg_int64_t btime_n; /* basetime numerator */
ogg_int64_t btime_d; /* basetime denominator */
/* will holds the time of origin of the stream, a 20 bit field. */
unsigned char UTC[20];
} fishead_packet;
/* fisbone_packet holds a fisbone header packet. */
typedef struct {
ogg_uint32_t serial_no; /* serial no of the corresponding stream */
ogg_uint32_t nr_header_packet; /* number of header packets */
/* granule rate is the temporal resolution of the logical bitstream */
ogg_int64_t granule_rate_n; /* granule rate numerator */
ogg_int64_t granule_rate_d; /* granule rate denominator */
ogg_int64_t start_granule; /* start granule value */
ogg_uint32_t preroll; /* preroll */
unsigned char granule_shift; /* 1 byte value holding the granule shift */
char *message_header_fields; /* holds all the message header fields */
/* current total size of the message header fields, for realloc purpose, initially zero */
ogg_uint32_t current_header_size;
} fisbone_packet;
extern int write_ogg_page_to_file(ogg_page *og, FILE *out);
extern int add_message_header_field(fisbone_packet *fp, char *header_key, char *header_value);
/* remember to deallocate the returned ogg_packet properly */
extern int ogg_from_fishead(fishead_packet *fp,ogg_packet *op);
extern int ogg_from_fisbone(fisbone_packet *fp,ogg_packet *op);
extern int fisbone_clear(fisbone_packet *fp);
extern int fishead_from_ogg(ogg_packet *op,fishead_packet *fp);
extern int fisbone_from_ogg(ogg_packet *op,fisbone_packet *fp);
extern int fishead_from_ogg_page(const ogg_page *og,fishead_packet *fp);
extern int fisbone_from_ogg_page(const ogg_page *og,fisbone_packet *fp);
extern int add_fishead_to_stream(ogg_stream_state *os, fishead_packet *fp);
extern int add_fisbone_to_stream(ogg_stream_state *os, fisbone_packet *fp);
extern int add_eos_packet_to_stream(ogg_stream_state *os);
extern int flush_ogg_stream_to_file(ogg_stream_state *os, FILE *out);
#ifdef __cplusplus
}
#endif
#endif /* _SKELETON_H */
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