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avfilter: add ff_filter_get_nb_threads()

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This commit is contained in:
Paul B Mahol 2016-08-27 22:22:58 +02:00
parent 449339084f
commit 5b1907142d
2 changed files with 13 additions and 0 deletions
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7
libavfilter/avfilter.c
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@ -783,6 +783,13 @@ void avfilter_free(AVFilterContext *filter)
av_free(filter);
}
int ff_filter_get_nb_threads(AVFilterContext *ctx)
{
if (ctx->nb_threads > 0)
return FFMIN(ctx->nb_threads, ctx->graph->nb_threads);
return ctx->graph->nb_threads;
}
static int process_options(AVFilterContext *ctx, AVDictionary **options,
const char *args)
{

6
libavfilter/internal.h
View file

@ -402,4 +402,10 @@ static inline int ff_norm_qscale(int qscale, int type)
return qscale;
}
/**
* Get number of threads for current filter instance.
* This number is always same or less than graph->nb_threads.
*/
int ff_filter_get_nb_threads(AVFilterContext *ctx);
#endif /* AVFILTER_INTERNAL_H */