[FFmpeg-devel] [PATCH] libavcodec/qsvdec.c: using queue count to unref frame

[wenbin.chen at intel.com]

From: "Chen,Wenbin" <wenbin.chen at intel.com>

MSDK vc1 and av1 sometimes output frame into the same suface, but
ffmpeg-qsv assume the surface will be used only once, so it will
unref the frame when it receives the outpur surface. Now change
it to unref frame according to queue count.

Signed-off-by Wenbin Chen <wenbin.chen at intel.com>
---
 libavcodec/qsvdec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/qsvdec.c b/libavcodec/qsvdec.c
index d10f90a0db..e073e10699 100644
--- a/libavcodec/qsvdec.c
+++ b/libavcodec/qsvdec.c
@@ -470,7 +470,7 @@ static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
             return AVERROR_BUG;
         }
 
-        out_frame->queued = 1;
+        out_frame->queued += 1;
         av_fifo_generic_write(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
         av_fifo_generic_write(q->async_fifo, &sync,      sizeof(sync),      NULL);
     } else {
@@ -483,7 +483,7 @@ static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
 
         av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
         av_fifo_generic_read(q->async_fifo, &sync,      sizeof(sync),      NULL);
-        out_frame->queued = 0;
+        out_frame->queued -= 1;
 
         if (avctx->pix_fmt != AV_PIX_FMT_QSV) {
             do {
-- 
2.25.1