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doc/writing_filters: Use ff_filter_get_nb_threads() get number of threads

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ff_filter_get_nb_threads() respect AVFilterContext.nb_threads and
graph->nb_threads both, in most case, we perfer this API than using
ctx->graph->nb_threads directly.

Reviewed-by: Steven Liu <lq@onvideo.cn>
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
This commit is contained in:
Jun Zhao 2019-05-22 09:49:43 +08:00
parent 98663a0bb8
commit 82ccb9cba9
1 changed files with 1 additions and 1 deletions
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doc/writing_filters.txt
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@ -389,7 +389,7 @@ distributor with something like this:
td.in = in;
td.out = out;
ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ctx->graph->nb_threads));
ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
// ...