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codecs: vp9 decoder: Drain output buffers before resolution change

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We must drain the pending output picture so that subclass can renegotiate
the caps. Not doing so while still renegotiating would mean that the
subclass would have to do an allocation query before pushing the caps.
Pushing the caps now without this would also not work since these caps
won't match the pending buffers format.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7684>
This commit is contained in:
Benjamin Gaignard 2024-09-20 10:30:01 +02:00 committed by GStreamer Marge Bot
parent ad537ef934
commit 0f171b2086
1 changed files with 18 additions and 0 deletions
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18
subprojects/gst-plugins-bad/gst-libs/gst/codecs/gstvp9decoder.c
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@ -500,6 +500,24 @@ gst_vp9_decoder_handle_frame (GstVideoDecoder * decoder,
picture->data = map.data;
picture->size = map.size;
/* If changing of resolution drain all output buffers.
* This will allow subclass to renegotiate immediatly. */
if (priv->support_non_kf_change
&& gst_vp9_decoder_is_format_change (self, &frame_hdr)) {
gst_vp9_decoder_drain_output_queue (self, 0, &ret);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (self, "Failed to drain pending frames, returned %s",
gst_flow_get_name (ret));
goto unmap_and_error;
}
priv->frame_width = frame_hdr.width;
priv->frame_height = frame_hdr.height;
priv->render_width = frame_hdr.render_width;
priv->render_height = frame_hdr.render_height;
priv->profile = frame_hdr.profile;
}
if (klass->new_picture) {
ret = klass->new_picture (self, frame, picture);
if (ret != GST_FLOW_OK) {