Do not assume that ff_request_frame() returning success
implies a frame has arrived in the FIFO.
Instead, just loop until a frame is in the FIFO.
It does not change anything since the same loop is present
in ff_request_frame(), confirmed by an assertion.
AVFrame *cur_frame;
/* no picref available, fetch it from the filterchain */
- if (!av_fifo_size(buf->fifo)) {
+ while (!av_fifo_size(buf->fifo)) {
if (inlink->closed)
return AVERROR_EOF;
if (flags & AV_BUFFERSINK_FLAG_NO_REQUEST)
return ret;
}
- if (!av_fifo_size(buf->fifo))
- return AVERROR(EINVAL);
-
if (flags & AV_BUFFERSINK_FLAG_PEEK) {
cur_frame = *((AVFrame **)av_fifo_peek2(buf->fifo, 0));
if ((ret = av_frame_ref(frame, cur_frame)) < 0)