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vaapipostproc: Tweak the output video format setting to enable the autoplugging

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This is a workaround until auto-plugging is fixed when
format=ENCODED + memory:VASurface caps feature are provided.

Use the downstream negotiated video format as the output video format
if the user didn't ask for the colorspace conversion explicitly.
Usecase: This will help to connect elements like videoscale, videorate etc
to vaapipostproc.

https://bugzilla.gnome.org/show_bug.cgi?id=739443
This commit is contained in:
Sreerenj Balachandran 2014-11-03 19:19:20 +02:00 committed by Gwenole Beauchesne
parent eeb43989c1
commit 626e180fef
1 changed files with 22 additions and 1 deletions
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23
gst/vaapi/gstvaapipostproc.c
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@ -1127,7 +1127,28 @@ gst_vaapipostproc_transform_caps_impl(GstBaseTransform *trans,
// Update size from user-specified parameters
format = GST_VIDEO_INFO_FORMAT(&vi);
#if GST_CHECK_VERSION(1,1,0)
out_format = postproc->format;
/* XXX: this is a workaround until auto-plugging is fixed when
* format=ENCODED + memory:VASurface caps feature are provided.
* use the downstream negotiated video format as the output format
* if the user didn't explicitly ask for colorspace conversion.
* Use a filter caps which contain all raw video formats, (excluding
* GST_VIDEO_FORMAT_ENCODED) */
if (postproc->format != DEFAULT_FORMAT)
out_format = postproc->format;
else {
GstCaps *peer_caps, *filter_caps;
GstVideoInfo peer_vi;
filter_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE(GST_VIDEO_FORMATS_ALL));
peer_caps = gst_pad_peer_query_caps(
GST_BASE_TRANSFORM_SRC_PAD(trans), filter_caps);
if (!gst_caps_is_fixed(peer_caps))
peer_caps = gst_caps_fixate (peer_caps);
gst_video_info_from_caps(&peer_vi, peer_caps);
out_format = GST_VIDEO_INFO_FORMAT (&peer_vi);
gst_caps_unref (filter_caps);
if (peer_caps)
gst_caps_unref (peer_caps);
}
#else
out_format = GST_VIDEO_FORMAT_ENCODED;
#endif