[Spice-devel] [PATCH spice-gtk] gst: Fix detection of h264 stream decoder

[Victor Toso]

Hi,

On Thu, Jul 13, 2017 at 01:18:14PM +0200, Pavel Grunt wrote:
> On Thu, 2017-07-13 at 13:11 +0200, Victor Toso wrote:
> > On Thu, Jul 13, 2017 at 01:05:31PM +0200, Pavel Grunt wrote:
> > > GStreamer's avdec_h264 needs h264parse to be able to process H264 video
> > > streams. However the check for elements through GstRegistry forgot to
> > > include the parsers, thus making spice-gtk to not set the relevant cap
> > > to inform the server about H264 decoding capability.
> > 
> > Wouldn't that make it possible to find a parser but not a decoder and
> > evaluate the _has_codec() to true?
> yes, it would
> 
> so it must be a check for parsers and then searching for decoders accepting the
> parser(s)'s output

Not really, avdec_h264 should show when we list the decoders.

> 
> Pavel
> > > ---
> > >  src/channel-display-gst.c | 1 +
> > >  1 file changed, 1 insertion(+)
> > > 
> > > diff --git a/src/channel-display-gst.c b/src/channel-display-gst.c
> > > index 54edd6b..d883d9f 100644
> > > --- a/src/channel-display-gst.c
> > > +++ b/src/channel-display-gst.c
> > > @@ -652,6 +652,7 @@ gboolean gstvideo_has_codec(int codec_type)
> > >      g_return_val_if_fail(VALID_VIDEO_CODEC_TYPE(codec_type), FALSE);
> > >  
> > >      type = GST_ELEMENT_FACTORY_TYPE_DECODER |
> > > +           GST_ELEMENT_FACTORY_TYPE_PARSER |
> > >             GST_ELEMENT_FACTORY_TYPE_MEDIA_VIDEO |
> > >             GST_ELEMENT_FACTORY_TYPE_MEDIA_IMAGE;
> > >      all_decoders = gst_element_factory_list_get_elements(type,
> > > GST_RANK_NONE);
> > > -- 
> > > 2.13.0
> > > 
> > > _______________________________________________
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> > > Spice-devel at lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/spice-devel
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