gstreamer/ges/ges-track-transition.c

151 lines
4.6 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon@collabora.co.uk>
* 2010 Nokia Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "ges-internal.h"
#include "ges-track-object.h"
#include "ges-track-transition.h"
G_DEFINE_TYPE (GESTrackTransition, ges_track_transition, GES_TYPE_TRACK_OBJECT);
static void
ges_track_transition_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_transition_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_transition_dispose (GObject * object)
{
GESTrackTransition *self = GES_TRACK_TRANSITION (object);
if (self->controller) {
g_object_unref (self->controller);
self->controller = NULL;
self->control_source = NULL;
}
G_OBJECT_CLASS (ges_track_transition_parent_class)->dispose (object);
}
static void
ges_track_transition_finalize (GObject * object)
{
G_OBJECT_CLASS (ges_track_transition_parent_class)->dispose (object);
}
GstPad *
link_element_to_mixer (GstElement * element, GstElement * mixer)
{
GstPad *sinkpad = gst_element_get_request_pad (mixer, "sink_%d");
GstPad *srcpad = gst_element_get_static_pad (element, "src");
g_assert (sinkpad);
g_assert (srcpad);
gst_pad_link (srcpad, sinkpad);
return sinkpad;
}
static gboolean
ges_track_transition_create_gnl_object (GESTrackObject * object)
{
object->gnlobject = gst_element_factory_make ("gnloperation",
"transition-operation");
g_object_set (object->gnlobject, "priority", 0, NULL);
if ((object->track->type) == GES_TRACK_TYPE_VIDEO) {
GstElement *topbin = gst_bin_new ("transition-bin");
GstElement *iconva = gst_element_factory_make ("ffmpegcolorspace",
"tr-csp-a");
GstElement *iconvb = gst_element_factory_make ("ffmpegcolorspace",
"tr-csp-b");
GstElement *oconv = gst_element_factory_make ("ffmpegcolorspace",
"tr-csp-output");
GstElement *mixer = gst_element_factory_make ("videomixer", NULL);
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, mixer, oconv, NULL);
GstPad *a_pad = link_element_to_mixer (iconva, mixer);
GstPad *b_pad = link_element_to_mixer (iconvb, mixer);
gst_element_link (mixer, oconv);
GstPad *sinka_target = gst_element_get_static_pad (iconva, "sink");
GstPad *sinkb_target = gst_element_get_static_pad (iconvb, "sink");
GstPad *src_target = gst_element_get_static_pad (oconv, "src");
GstPad *sinka = gst_ghost_pad_new ("sinka", sinka_target);
GstPad *sinkb = gst_ghost_pad_new ("sinkb", sinkb_target);
GstPad *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_bin_add (GST_BIN (object->gnlobject), topbin);
//g_object_set(a_pad, "alpha", 0.5, NULL);
g_object_set (b_pad, "alpha", 0.5, NULL);
return TRUE;
}
return FALSE;
}
static void
ges_track_transition_class_init (GESTrackTransitionClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTrackObjectClass *track_class = GES_TRACK_OBJECT_CLASS (klass);
object_class->get_property = ges_track_transition_get_property;
object_class->set_property = ges_track_transition_set_property;
object_class->dispose = ges_track_transition_dispose;
object_class->finalize = ges_track_transition_finalize;
track_class->create_gnl_object = ges_track_transition_create_gnl_object;
}
static void
ges_track_transition_init (GESTrackTransition * self)
{
self->controller = NULL;
self->control_source = NULL;
}
GESTrackTransition *
ges_track_transition_new (void)
{
return g_object_new (GES_TYPE_TRACK_TRANSITION, NULL);
}