[FFmpeg-devel] [PATCH V2] 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 output 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 5f2e641373..3abd7bd4a2 100644
--- a/libavcodec/qsvdec.c
+++ b/libavcodec/qsvdec.c
@@ -513,7 +513,7 @@ 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 {
@@ -526,7 +526,7 @@ 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