static GObject * link_element_to_mixer_with_smpte (GstBin * bin, GstElement * element, GstElement * mixer, gint type, GstElement ** smpteref) { GstPad *srcpad, *sinkpad; GstElement *smptealpha = gst_element_factory_make ("smptealpha", NULL); g_object_set (G_OBJECT (smptealpha), "type", (gint) type, "invert", (gboolean) TRUE, NULL); gst_bin_add (bin, smptealpha); fast_element_link (element, smptealpha); /* crack */ if (smpteref) { *smpteref = smptealpha; } srcpad = gst_element_get_static_pad (smptealpha, "src"); sinkpad = gst_element_get_request_pad (mixer, "sink_%u"); gst_pad_link_full (srcpad, sinkpad, GST_PAD_LINK_CHECK_NOTHING); gst_object_unref (srcpad); return G_OBJECT (sinkpad); }
static GstElement * ges_track_video_transition_create_element (GESTrackObject * object) { GstElement *topbin, *iconva, *iconvb, *scalea, *scaleb, *capsfilt, *oconv; GstObject *target = NULL; const gchar *propname = NULL; GstElement *mixer = NULL; GstPad *sinka_target, *sinkb_target, *src_target, *sinka, *sinkb, *src, *srca_pad; GESTrackVideoTransition *self; GESTrackVideoTransitionPrivate *priv; self = GES_TRACK_VIDEO_TRANSITION (object); priv = self->priv; GST_LOG ("creating a video bin"); topbin = gst_bin_new ("transition-bin"); iconva = gst_element_factory_make ("videoconvert", "tr-csp-a"); iconvb = gst_element_factory_make ("videoconvert", "tr-csp-b"); scalea = gst_element_factory_make ("videoscale", "vs-a"); scaleb = gst_element_factory_make ("videoscale", "vs-b"); capsfilt = gst_element_factory_make ("capsfilter", "capsfilt"); oconv = gst_element_factory_make ("videoconvert", "tr-csp-output"); gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, scalea, scaleb, capsfilt, oconv, NULL); mixer = gst_element_factory_make ("videomixer", NULL); g_assert (mixer); g_object_set (G_OBJECT (mixer), "background", 1, NULL); gst_bin_add (GST_BIN (topbin), mixer); if (priv->pending_type != GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE) { priv->sinka = (GstPad *) link_element_to_mixer_with_smpte (GST_BIN (topbin), iconva, mixer, priv->pending_type, NULL); priv->sinkb = (GstPad *) link_element_to_mixer_with_smpte (GST_BIN (topbin), iconvb, mixer, priv->pending_type, &priv->smpte); target = GST_OBJECT (priv->smpte); propname = "position"; priv->start_value = 1.0; priv->end_value = 0.0; } else { gst_element_link_pads_full (iconva, "src", scalea, "sink", GST_PAD_LINK_CHECK_NOTHING); gst_element_link_pads_full (iconvb, "src", scaleb, "sink", GST_PAD_LINK_CHECK_NOTHING); gst_element_link_pads_full (scaleb, "src", capsfilt, "sink", GST_PAD_LINK_CHECK_NOTHING); priv->sinka = (GstPad *) link_element_to_mixer (scalea, mixer); priv->sinkb = (GstPad *) link_element_to_mixer (capsfilt, mixer); target = GST_OBJECT (priv->sinkb); propname = "alpha"; priv->start_value = 0.0; priv->end_value = 1.0; } priv->mixer = gst_object_ref (mixer); fast_element_link (mixer, oconv); sinka_target = gst_element_get_static_pad (iconva, "sink"); sinkb_target = gst_element_get_static_pad (iconvb, "sink"); src_target = gst_element_get_static_pad (oconv, "src"); sinka = gst_ghost_pad_new ("sinka", sinka_target); sinkb = gst_ghost_pad_new ("sinkb", sinkb_target); src = gst_ghost_pad_new ("src", src_target); gst_element_add_pad (topbin, src); gst_element_add_pad (topbin, sinka); gst_element_add_pad (topbin, sinkb); srca_pad = gst_element_get_static_pad (scalea, "src"); g_signal_connect (srca_pad, "notify::caps", G_CALLBACK (on_caps_set), (GstElement *) capsfilt); gst_object_unref (sinka_target); gst_object_unref (sinkb_target); gst_object_unref (src_target); gst_object_unref (srca_pad); /* set up interpolation */ set_interpolation (target, priv, propname); priv->topbin = topbin; priv->type = priv->pending_type; return topbin; }
static GstElement * ges_track_video_transition_create_element (GESTrackObject * object) { GstElement *topbin, *iconva, *iconvb, *oconv; GObject *target = NULL; const gchar *propname = NULL; GstElement *mixer = NULL; GstPad *sinka_target, *sinkb_target, *src_target, *sinka, *sinkb, *src; GstController *controller; GstInterpolationControlSource *control_source; GESTrackVideoTransition *self; GESTrackVideoTransitionPrivate *priv; self = GES_TRACK_VIDEO_TRANSITION (object); priv = self->priv; GST_LOG ("creating a video bin"); topbin = gst_bin_new ("transition-bin"); iconva = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-a"); iconvb = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-b"); oconv = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-output"); gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, oconv, NULL); /* Prefer videomixer2 to videomixer */ mixer = gst_element_factory_make ("videomixer2", NULL); if (mixer == NULL) mixer = gst_element_factory_make ("videomixer", NULL); g_object_set (G_OBJECT (mixer), "background", 1, NULL); gst_bin_add (GST_BIN (topbin), mixer); if (priv->type != GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE) { priv->sinka = (GstPad *) link_element_to_mixer_with_smpte (GST_BIN (topbin), iconva, mixer, priv->type, NULL); priv->sinkb = (GstPad *) link_element_to_mixer_with_smpte (GST_BIN (topbin), iconvb, mixer, priv->type, &priv->smpte); target = (GObject *) priv->smpte; propname = "position"; priv->start_value = 1.0; priv->end_value = 0.0; } else { priv->sinka = (GstPad *) link_element_to_mixer (iconva, mixer); priv->sinkb = (GstPad *) link_element_to_mixer (iconvb, mixer); target = (GObject *) priv->sinkb; propname = "alpha"; priv->start_value = 0.0; priv->end_value = 1.0; } priv->mixer = gst_object_ref (mixer); fast_element_link (mixer, oconv); sinka_target = gst_element_get_static_pad (iconva, "sink"); sinkb_target = gst_element_get_static_pad (iconvb, "sink"); src_target = gst_element_get_static_pad (oconv, "src"); sinka = gst_ghost_pad_new ("sinka", sinka_target); sinkb = gst_ghost_pad_new ("sinkb", sinkb_target); src = gst_ghost_pad_new ("src", src_target); gst_element_add_pad (topbin, src); gst_element_add_pad (topbin, sinka); gst_element_add_pad (topbin, sinkb); gst_object_unref (sinka_target); gst_object_unref (sinkb_target); gst_object_unref (src_target); /* set up interpolation */ g_object_set (target, propname, (gfloat) 0.0, NULL); controller = gst_object_control_properties (target, propname, NULL); control_source = gst_interpolation_control_source_new (); gst_controller_set_control_source (controller, propname, GST_CONTROL_SOURCE (control_source)); gst_interpolation_control_source_set_interpolation_mode (control_source, GST_INTERPOLATE_LINEAR); priv->controller = controller; priv->control_source = control_source; return topbin; }