[FFmpeg-devel] [PATCH] pthread: Allow thread_count==0
Sun Feb 20 02:30:43 CET 2011
Takashi Mochizuki <mochi at da2.so-net.ne.jp> writes:
> Some codec like libx264 uses thread_count==0 as Automatic mode.
> But, "Frame-based multithreading framework using pthreads"
> (commit: 37b00b47cbeecd66bb34c5c7c534d016d6e8da24)
> does not allow thread_count==0.
> Here is a tiny patch.
> Takashi Mochizuki
> libavcodec/pthread.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
> diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
> index 0e033d3..6b989ac 100644
> --- a/libavcodec/pthread.c
> +++ b/libavcodec/pthread.c
> @@ -877,7 +877,7 @@ int ff_thread_init(AVCodecContext *avctx, int thread_count)
> return -1;
> - avctx->thread_count = FFMAX(1, thread_count);
> + avctx->thread_count = FFMAX(0, thread_count);
I'm pretty sure this has come up before, and that there was some reason
for things being as they are. I don't remember the details without
digging in the archives.
mans at mansr.com
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