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Helper functions for adding new pads to filters at runtime

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Commited in SoC by Bobby Bingham on 2007-08-07 22:31:56

Originally committed as revision 11999 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak
2008-02-15 21:37:22 +00:00
parent 01942f1d90
commit 246184413a
1 changed files with 21 additions and 0 deletions
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21
libavfilter/avfilter.c
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@ -47,6 +47,27 @@ void avfilter_unref_pic(AVFilterPicRef *ref)
av_free(ref); av_free(ref);
} }
void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
AVFilterPad **pads, AVFilterLink ***links,
AVFilterPad *newpad)
{
unsigned i;
idx = FFMIN(idx, *count);
*pads = av_realloc(*pads, sizeof(AVFilterPad) * (*count + 1));
*links = av_realloc(*links, sizeof(AVFilterLink*) * (*count + 1));
memmove(*pads +idx+1, *pads +idx, sizeof(AVFilterPad) * (*count-idx));
memmove(*links+idx+1, *links+idx, sizeof(AVFilterLink*) * (*count-idx));
memcpy(*pads+idx, newpad, sizeof(AVFilterPad));
(*links)[idx] = NULL;
(*count) ++;
for(i = idx+1; i < *count; i ++)
if(*links[i])
(*(unsigned *)((uint8_t *)(*links[i]) + padidx_off)) ++;
}
int avfilter_link(AVFilterContext *src, unsigned srcpad, int avfilter_link(AVFilterContext *src, unsigned srcpad,
AVFilterContext *dst, unsigned dstpad) AVFilterContext *dst, unsigned dstpad)
{ {