libkate 0.4.1
decoding.c
/*
This shows the steps necessary to encode a Kate stream.
For clarity, error checking is omitted.
For simplicity, the input is assumed to be a single Kate stream.
Usually, Kate streams will be multiplexed with other streams (either
other Kate streams, or audio, or video). In these cases, the Ogg
part will have to be more complex, but the Kate specific code will
be the same.
*/
#include <stdio.h>
#include <string.h>
#include "common.h"
/* All the libkate API is available from the main kate header file: */
#include <kate/oggkate.h>
int main()
{
ogg_sync_state oy;
ogg_stream_state os;
int init=0;
ogg_packet op;
const kate_event *ev;
/* for the benefit of windows, which mangles data otherwise */
set_binary_file(stdin);
/* we initialize ogg and kate info/comment structures */
ogg_sync_init(&oy);
/*
First, read the headers, which must appear first in a Kate stream. When
kate_decode_header returns a positive number, all headers have been seen
and we're ready to decode data.
*/
do {
get_packet(&oy,&os,&init,&op);
} while (kate_ogg_decode_headerin(&ki,&kc,&op)==0);
/*
We now have all the information we need from the headers, so we can
initialize kate for decoding
*/
/*
We can now read data, until kate_decode_packetin returns a positive
number, signaling the end of the stream
*/
while (1) {
if (get_packet(&oy,&os,&init,&op)) break;
if (kate_ogg_decode_packetin(&k,&op)>0) break;
/* we may have an event (eg, text) */
if (kate_decode_eventout(&k,&ev)==0) {
printf("Kate stream has text: %s\n",ev->text);
}
}
/* That's it, we can now cleanup */
ogg_stream_clear(&os);
ogg_sync_clear(&oy);
return 0;
}
int kate_comment_init(kate_comment *kc)
Definition kate_comment.c:29
int kate_comment_clear(kate_comment *kc)
Definition kate_comment.c:48
int kate_decode_eventout(kate_state *k, kate_const kate_event **ev)
Definition kate_decode.c:1589
int kate_decode_init(kate_state *k, kate_info *ki)
Definition kate_decode.c:1160
int kate_info_clear(kate_info *ki)
Definition kate_info.c:539
int kate_info_init(kate_info *ki)
Definition kate_info.c:29
int kate_clear(kate_state *k)
Definition kate.c:74
int kate_ogg_decode_packetin(kate_state *k, ogg_packet *op)
Definition kate_ogg.c:260
int kate_ogg_decode_headerin(kate_info *ki, kate_comment *kc, ogg_packet *op)
Definition kate_ogg.c:244
Definition kate.h:347
Definition kate.h:358
kate_const char * text
Definition kate.h:371
Definition kate.h:274
Definition kate.h:336