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vaapipostproc: Tweak the output video format setting to enable the autoplugging
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
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1 changed files with 22 additions and 1 deletions
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@ -1127,7 +1127,28 @@ gst_vaapipostproc_transform_caps_impl(GstBaseTransform *trans,
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// Update size from user-specified parameters
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format = GST_VIDEO_INFO_FORMAT(&vi);
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#if GST_CHECK_VERSION(1,1,0)
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out_format = postproc->format;
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/* XXX: this is a workaround until auto-plugging is fixed when
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* format=ENCODED + memory:VASurface caps feature are provided.
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* use the downstream negotiated video format as the output format
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* if the user didn't explicitly ask for colorspace conversion.
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* Use a filter caps which contain all raw video formats, (excluding
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* GST_VIDEO_FORMAT_ENCODED) */
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if (postproc->format != DEFAULT_FORMAT)
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out_format = postproc->format;
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else {
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GstCaps *peer_caps, *filter_caps;
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GstVideoInfo peer_vi;
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filter_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE(GST_VIDEO_FORMATS_ALL));
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peer_caps = gst_pad_peer_query_caps(
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GST_BASE_TRANSFORM_SRC_PAD(trans), filter_caps);
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if (!gst_caps_is_fixed(peer_caps))
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peer_caps = gst_caps_fixate (peer_caps);
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gst_video_info_from_caps(&peer_vi, peer_caps);
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out_format = GST_VIDEO_INFO_FORMAT (&peer_vi);
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gst_caps_unref (filter_caps);
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if (peer_caps)
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gst_caps_unref (peer_caps);
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}
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#else
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out_format = GST_VIDEO_FORMAT_ENCODED;
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#endif
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