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/*
* Filter graphs
* copyright (c) 2007 Bobby Bingham
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avfilter.h"
#include "avfiltergraph.h"
struct AVFilterGraph {
unsigned filter_count;
AVFilterContext **filters;
};
AVFilterGraph *avfilter_create_graph(void)
{
return av_mallocz(sizeof(AVFilterGraph));
}
static void destroy_graph_filters(AVFilterGraph *graph)
{
unsigned i;
for(i = 0; i < graph->filter_count; i ++)
avfilter_destroy(graph->filters[i]);
av_freep(&graph->filters);
}
void avfilter_destroy_graph(AVFilterGraph *graph)
{
destroy_graph_filters(graph);
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;
}
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