> For vaapi if the init_pool_size is not zero, the pool size is fixed. > This means max surfaces is init_pool_size, but when mapping vaapi > frame to qsv frame, the init_pool_size < nb_surface. The cause is that > vaapi_decode_make_config() config the init_pool_size and it is called > twice. The first time is to init frame_context and the second time is to > init codec. On the second time the init_pool_size is changed to original > value so the init_pool_size is lower than the reall size because > pool_size used to initialize frame_context need to plus thread_count and > 3 (guarantee 4 base work surfaces). Now add code to make sure > init_pool_size is only set once. Now the following commandline works: > > ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 \ > -hwaccel_output_format vaapi -i input.264 \ > -vf "hwmap=derive_device=qsv,format=qsv" \ > -c:v h264_qsv output.264 > > Signed-off-by: Wenbin Chen <wenbin.c...@intel.com> > --- > libavcodec/vaapi_decode.c | 34 ++++++++++++++++++---------------- > 1 file changed, 18 insertions(+), 16 deletions(-) > > diff --git a/libavcodec/vaapi_decode.c b/libavcodec/vaapi_decode.c > index 665af370ed..aab8162989 100644 > --- a/libavcodec/vaapi_decode.c > +++ b/libavcodec/vaapi_decode.c > @@ -572,22 +572,24 @@ static int > vaapi_decode_make_config(AVCodecContext *avctx, > if (err < 0) > goto fail; > > - frames->initial_pool_size = 1; > - // Add per-codec number of surfaces used for storing reference > frames. > - switch (avctx->codec_id) { > - case AV_CODEC_ID_H264: > - case AV_CODEC_ID_HEVC: > - case AV_CODEC_ID_AV1: > - frames->initial_pool_size += 16; > - break; > - case AV_CODEC_ID_VP9: > - frames->initial_pool_size += 8; > - break; > - case AV_CODEC_ID_VP8: > - frames->initial_pool_size += 3; > - break; > - default: > - frames->initial_pool_size += 2; > + if (!frames->initial_pool_size) { > + frames->initial_pool_size = 1; > + // Add per-codec number of surfaces used for storing reference > frames. > + switch (avctx->codec_id) { > + case AV_CODEC_ID_H264: > + case AV_CODEC_ID_HEVC: > + case AV_CODEC_ID_AV1: > + frames->initial_pool_size += 16; > + break; > + case AV_CODEC_ID_VP9: > + frames->initial_pool_size += 8; > + break; > + case AV_CODEC_ID_VP8: > + frames->initial_pool_size += 3; > + break; > + default: > + frames->initial_pool_size += 2; > + } > } > } > > -- > 2.25.1 >
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