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avcodec/libvpxenc: fix setting amount of threads used for encoding 

The libvpx doxy says that a value of 0 for the g_threads field is
equivalent to a value of 1, whereas for avctx->thread_count it means
the maximum amount of threads possible for the host system.

Use av_cpu_count() to get the correct thread count when auto threads
is requested.

Reviewed-by: James Zern <jzern@google.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2018-05-19 15:01:56 -03:00
parent ba7d1377e8
commit 27df34bf1f
1 changed files with 1 additions and 1 deletions
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2
libavcodec/libvpxenc.c
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@ -493,7 +493,7 @@ static av_cold int vpx_init(AVCodecContext *avctx,
enccfg.g_h = avctx->height;
enccfg.g_timebase.num = avctx->time_base.num;
enccfg.g_timebase.den = avctx->time_base.den;
enccfg.g_threads = avctx->thread_count;
enccfg.g_threads = avctx->thread_count ? avctx->thread_count : av_cpu_count();
enccfg.g_lag_in_frames= ctx->lag_in_frames;
if (avctx->flags & AV_CODEC_FLAG_PASS1)