79 lines
3.0 KiB
C
79 lines
3.0 KiB
C
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/*
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* skeleton.h
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* author: Tahseen Mohammad
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*/
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#ifndef _SKELETON_H
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#define _SKELETON_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef WIN32
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#define snprintf _snprintf
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#endif
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#include <ogg/ogg.h>
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#define SKELETON_VERSION_MAJOR 3
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#define SKELETON_VERSION_MINOR 0
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#define FISHEAD_IDENTIFIER "fishead\0"
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#define FISBONE_IDENTIFIER "fisbone\0"
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#define FISHEAD_SIZE 64
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#define FISBONE_SIZE 52
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#define FISBONE_MESSAGE_HEADER_OFFSET 44
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/* fishead_packet holds a fishead header packet. */
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typedef struct {
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ogg_uint16_t version_major; /* skeleton version major */
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ogg_uint16_t version_minor; /* skeleton version minor */
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/* Start time of the presentation
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* For a new stream presentationtime & basetime is same. */
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ogg_int64_t ptime_n; /* presentation time numerator */
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ogg_int64_t ptime_d; /* presentation time denominator */
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ogg_int64_t btime_n; /* basetime numerator */
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ogg_int64_t btime_d; /* basetime denominator */
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/* will holds the time of origin of the stream, a 20 bit field. */
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unsigned char UTC[20];
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} fishead_packet;
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/* fisbone_packet holds a fisbone header packet. */
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typedef struct {
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ogg_uint32_t serial_no; /* serial no of the corresponding stream */
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ogg_uint32_t nr_header_packet; /* number of header packets */
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/* granule rate is the temporal resolution of the logical bitstream */
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ogg_int64_t granule_rate_n; /* granule rate numerator */
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ogg_int64_t granule_rate_d; /* granule rate denominator */
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ogg_int64_t start_granule; /* start granule value */
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ogg_uint32_t preroll; /* preroll */
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unsigned char granule_shift; /* 1 byte value holding the granule shift */
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char *message_header_fields; /* holds all the message header fields */
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/* current total size of the message header fields, for realloc purpose, initially zero */
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ogg_uint32_t current_header_size;
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} fisbone_packet;
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extern int write_ogg_page_to_file(ogg_page *og, FILE *out);
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extern int add_message_header_field(fisbone_packet *fp, char *header_key, char *header_value);
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/* remember to deallocate the returned ogg_packet properly */
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extern ogg_packet ogg_from_fishead(fishead_packet *fp);
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extern ogg_packet ogg_from_fisbone(fisbone_packet *fp);
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extern fishead_packet fishead_from_ogg(ogg_packet *op);
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extern fisbone_packet fisbone_from_ogg(ogg_packet *op);
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extern int add_fishead_to_stream(ogg_stream_state *os, fishead_packet *fp);
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extern int add_fisbone_to_stream(ogg_stream_state *os, fisbone_packet *fp);
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extern int add_eos_packet_to_stream(ogg_stream_state *os);
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extern int flush_ogg_stream_to_file(ogg_stream_state *os, FILE *out);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SKELETON_H */
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