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v4l2: videodec: Fix stalls on empty buffer

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Drivers may signal end of sequence using an empty buffer and LAST buffer
set, or just an empty buffer on certain legacy implementation. When this
occured, we'd send GST_V4L2_FLOW_LAST_BUFFER were the code expected
GST_FLOW_EOS. Stop abusing GST_FLOW_EOS and port all the code to the new
GST_V4L2_FLOW_LAST_BUFFER.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4671>
This commit is contained in:
Nicolas Dufresne 2023-05-18 11:58:51 -04:00 committed by Tim-Philipp Müller
parent e8b74ada7c
commit a7f6b878e0
3 changed files with 5 additions and 5 deletions
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2
subprojects/gst-plugins-good/sys/v4l2/gstv4l2allocator.c
View file

@ -1399,7 +1399,7 @@ gst_v4l2_allocator_dqbuf (GstV4l2Allocator * allocator,
error:
if (errno == EPIPE) {
GST_DEBUG_OBJECT (allocator, "broken pipe signals last buffer");
return GST_FLOW_EOS;
return GST_V4L2_FLOW_LAST_BUFFER;
}
GST_ERROR_OBJECT (allocator, "failed dequeuing a %s buffer: %s",

6
subprojects/gst-plugins-good/sys/v4l2/gstv4l2bufferpool.c
View file

@ -1258,7 +1258,7 @@ gst_v4l2_buffer_pool_dqbuf (GstV4l2BufferPool * pool, GstBuffer ** buffer,
GST_LOG_OBJECT (pool, "dequeueing a buffer");
res = gst_v4l2_allocator_dqbuf (pool->vallocator, &group);
if (res == GST_FLOW_EOS)
if (res == GST_V4L2_FLOW_LAST_BUFFER)
goto eos;
if (res != GST_FLOW_OK)
goto dqbuf_failed;
@ -1408,7 +1408,7 @@ poll_failed:
}
eos:
{
return GST_FLOW_EOS;
return GST_V4L2_FLOW_LAST_BUFFER;
}
dqbuf_failed:
{
@ -2165,7 +2165,7 @@ buffer_truncated:
}
eos:
{
GST_DEBUG_OBJECT (pool, "end of stream reached");
GST_DEBUG_OBJECT (pool, "end of sequence reached");
gst_buffer_unref (*buf);
*buf = NULL;
return GST_V4L2_FLOW_LAST_BUFFER;

2
subprojects/gst-plugins-good/sys/v4l2/gstv4l2videodec.c
View file

@ -884,7 +884,7 @@ beach:
return;
}
if (ret == GST_FLOW_EOS) {
if (ret == GST_V4L2_FLOW_LAST_BUFFER) {
GST_VIDEO_DECODER_STREAM_LOCK (decoder);
if (self->draining) {
self->draining = FALSE;