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Allow code to pass data to filters it creates. 

Commited in SoC by Bobby Bingham on 2007-07-15 16:45:50

Originally committed as revision 12692 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-04-04 20:06:13 +00:00
parent fc27b8081e
commit 1ac87cc890
2 changed files with 10 additions and 5 deletions
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13
libavfilter/avfiltergraph.c
View File

@ -56,7 +56,7 @@ void avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter)
graph->filters[graph->filter_count - 1] = filter;
}
static AVFilterContext *create_filter_with_args(const char *filt)
static AVFilterContext *create_filter_with_args(const char *filt, void *opaque)
{
AVFilterContext *ret;
char *filter = av_strdup(filt); /* copy - don't mangle the input string */
@ -75,7 +75,7 @@ static AVFilterContext *create_filter_with_args(const char *filt)
name, args ? args : "(none)");
if((ret = avfilter_create_by_name(name, NULL))) {
if(avfilter_init_filter(ret, args)) {
if(avfilter_init_filter(ret, args, opaque)) {
av_log(NULL, AV_LOG_ERROR, "error initializing filter!\n");
avfilter_destroy(ret);
goto fail;
@ -90,14 +90,19 @@ fail:
}
int avfilter_graph_load_chain(AVFilterGraph *graph,
unsigned count, char **filter_list,
unsigned count, char **filter_list, void **opaque,
AVFilterContext **first, AVFilterContext **last)
{
unsigned i;
AVFilterContext *filters[2] = {NULL,NULL};
for(i = 0; i < count; i ++) {
if(!(filters[1] = create_filter_with_args(filter_list[i])))
void *op;
if(opaque) op = opaque[i];
else op = NULL;
if(!(filters[1] = create_filter_with_args(filter_list[i], op)))
goto fail;
if(i == 0) {
if(first) *first = filters[1];

2
libavfilter/avfiltergraph.h
View File

@ -55,6 +55,6 @@ void avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter);
* @return 0 on success. -1 on error.
*/
int avfilter_graph_load_chain(AVFilterGraph *graph,
unsigned count, char **filter_list,
unsigned count, char **filter_list, void **opaque,
AVFilterContext **first, AVFilterContext **last);
#endif /* FFMPEG_AVFILTER_H */