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Add a simple filter graph structure and functions 

Commited in SoC by Bobby Bingham on 2007-07-14 20:12:54

Originally committed as revision 11988 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-02-15 21:36:37 +00:00
parent 6ae82d1ec7
commit f60208f443
1 changed files with 27 additions and 0 deletions
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27
libavfilter/avfilter.c
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@ -31,6 +31,33 @@
static int filter_count = 0;
static AVFilter **filters = NULL;
struct AVFilterGraph {
unsigned filter_count;
AVFilterContext **filters;
};
AVFilterGraph *avfilter_create_graph(void)
{
return av_mallocz(sizeof(AVFilterGraph));
}
void avfilter_destroy_graph(AVFilterGraph *graph)
{
unsigned i;
for(i = 0; i < graph->filter_count; i ++)
avfilter_destroy(graph->filters[i]);
av_free(graph->filters);
av_free(graph);
}
void avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter)
{
graph->filters = av_realloc(graph->filters,
sizeof(AVFilterContext*) * ++graph->filter_count);
graph->filters[graph->filter_count - 1] = filter;
}
/* TODO: buffer pool. see comment for avfilter_default_get_video_buffer() */
void avfilter_default_free_video_buffer(AVFilterPic *pic)
{