Instead of the videodecoder one. The OMX video decoders have their
valid input in the template pad, so just check against that to
avoid doing a query downstream.
gst_omx_video_dec_init (GstOMXVideoDec * self)
{
gst_video_decoder_set_packetized (GST_VIDEO_DECODER (self), TRUE);
+ gst_video_decoder_set_use_default_pad_acceptcaps (GST_VIDEO_DECODER_CAST
+ (self), TRUE);
+ GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (self));
g_mutex_init (&self->drain_lock);
g_cond_init (&self->drain_cond);