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rtpdec: Add generic function for iterating over FMTP configuration lines

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This will be used for cleaning up code that is common among RTP depacketizers.

Patch by Josh Allmann, joshua dot allmann at gmail

Originally committed as revision 23847 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Josh Allmann 2010-06-28 11:24:12 +00:00 committed by Martin Storsjö
parent 8b114d85ba
commit 016bc031eb
2 changed files with 30 additions and 0 deletions
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25
libavformat/rtpdec.c
View File

@ -531,3 +531,28 @@ void rtp_parse_close(RTPDemuxContext *s)
}
av_free(s);
}
int ff_parse_fmtp(AVStream *stream, PayloadContext *data, const char *p,
int (*parse_fmtp)(AVStream *stream,
PayloadContext *data,
char *attr, char *value))
{
char attr[256];
char value[4096];
int res;
// remove protocol identifier
while (*p && *p == ' ') p++; // strip spaces
while (*p && *p != ' ') p++; // eat protocol identifier
while (*p && *p == ' ') p++; // strip trailing spaces
while (ff_rtsp_next_attr_and_value(&p,
attr, sizeof(attr),
value, sizeof(value))) {
res = parse_fmtp(stream, data, attr, value);
if (res < 0)
return res;
}
return 0;
}

5
libavformat/rtpdec.h
View File

@ -172,6 +172,11 @@ void ff_register_dynamic_payload_handler(RTPDynamicProtocolHandler *handler);
int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size); ///< from rtsp.c, but used by rtp dynamic protocol handlers.
int ff_parse_fmtp(AVStream *stream, PayloadContext *data, const char *p,
int (*parse_fmtp)(AVStream *stream,
PayloadContext *data,
char *attr, char *value));
void av_register_rtp_dynamic_payload_handlers(void);
#endif /* AVFORMAT_RTPDEC_H */