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lavf/qsvvpp: add extra_hw_frames support 

extra_hw_frames is needed for some cases.
(eg: qsv decoding + qsv vpp + qsv look_ahead encoding, transcoding
 failed if no extra_hw_frames supported:
 ffmpeg -hwaccel qsv -c:v h264_qsv -i bbb_sunflower_1080p_30fps_normal_2000frames.mp4 \
-vf vpp_qsv=w=1280:h=720:extra_hw_frames=100 -v verbose  -c:v h264_qsv \
-look_ahead 1 -look_ahead_depth 100 out1.mp4
)

Signed-off-by: Zhong Li <zhong.li@intel.com>
This commit is contained in:
Zhong Li 2019-06-05 16:56:27 +08:00
parent b124327216
commit ef56c28b25
1 changed files with 2 additions and 0 deletions
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2
libavfilter/qsvvpp.c
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@ -460,6 +460,8 @@ static int init_vpp_session(AVFilterContext *avctx, QSVVPPContext *s)
out_frames_ctx->height = FFALIGN(outlink->h, 32);
out_frames_ctx->sw_format = s->out_sw_format;
out_frames_ctx->initial_pool_size = 64;
if (avctx->extra_hw_frames > 0)
out_frames_ctx->initial_pool_size += avctx->extra_hw_frames;
out_frames_hwctx->frame_type = s->out_mem_mode;
ret = av_hwframe_ctx_init(out_frames_ref);