vp9decoder: fail early if no input caps have been provided

The vp9decoder class does not implement the ->parse() virtual function,
and we always need to add the vp9parse element before it. So we should
set_needs_format of the decoder to TRUE, then if no parse before it, it
can fail with a "not-negotiated" error early, rather than go on and
generate unexpected error.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4064>
This commit is contained in:
He Junyan 2023-02-24 21:38:48 +08:00
parent c8af9adcdc
commit 30a05a3999

View file

@ -140,6 +140,7 @@ static void
gst_vp9_decoder_init (GstVp9Decoder * self)
{
gst_video_decoder_set_packetized (GST_VIDEO_DECODER (self), TRUE);
gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (self), TRUE);
self->priv = gst_vp9_decoder_get_instance_private (self);