It does not modify anything; it only returns a value, so it fulfills the requirements for av_pure. The deeper rationale behind this change is that this function is called quite often inside arguments to FFMIN which may lead to two calls to it; declaring this function as av_pure allows the compiler to optimize the second call away.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com> --- libavfilter/internal.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavfilter/internal.h b/libavfilter/internal.h index f3b434dbe9..1bcfb830a1 100644 --- a/libavfilter/internal.h +++ b/libavfilter/internal.h @@ -363,7 +363,7 @@ static inline int ff_norm_qscale(int qscale, int type) * 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); +int ff_filter_get_nb_threads(AVFilterContext *ctx) av_pure; /** * Generic processing of user supplied commands that are set -- 2.27.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".