@@ -616,16 +616,16 @@ int ff_v4l2_context_enqueue_packet(V4L2Context* ctx, const AVPacket* pkt)
return ff_v4l2_buffer_enqueue(avbuf);
}
-int ff_v4l2_context_dequeue_frame(V4L2Context* ctx, AVFrame* frame)
+int ff_v4l2_context_dequeue_frame(V4L2Context* ctx, AVFrame* frame, int timeout)
{
V4L2Buffer* avbuf = NULL;
/*
- * blocks until:
+ * timeout=-1 blocks until:
* 1. decoded frame available
* 2. an input buffer is ready to be dequeued
*/
- avbuf = v4l2_dequeue_v4l2buf(ctx, -1);
+ avbuf = v4l2_dequeue_v4l2buf(ctx, timeout);
if (!avbuf) {
if (ctx->done)
return AVERROR_EOF;
@@ -160,9 +160,10 @@ int ff_v4l2_context_dequeue_packet(V4L2Context* ctx, AVPacket* pkt);
* The frame must be non NULL.
* @param[in] ctx The V4L2Context to dequeue from.
* @param[inout] f The AVFrame to dequeue to.
+ * @param[in] timeout The timeout for dequeue (-1 to block, 0 to return immediately or milliseconds)
* @return 0 in case of success, AVERROR(EAGAIN) if no buffer was ready, another negative error in case of error.
*/
-int ff_v4l2_context_dequeue_frame(V4L2Context* ctx, AVFrame* f);
+int ff_v4l2_context_dequeue_frame(V4L2Context* ctx, AVFrame* f, int timeout);
/**
* Enqueues a buffer to a V4L2Context from an AVPacket
@@ -172,7 +172,7 @@ static int v4l2_receive_frame(AVCodecContext *avctx, AVFrame *frame)
dequeue:
av_packet_unref(&avpkt);
- return ff_v4l2_context_dequeue_frame(capture, frame);
+ return ff_v4l2_context_dequeue_frame(capture, frame, -1);
}
static av_cold int v4l2_decode_init(AVCodecContext *avctx)