gstreamer/ges/ges-timeline-effect.c
Thibault Saunier 861b724cd6 TimelineEffect: implement the create_track_object vmethod
tests: test the new vmethod
2011-05-06 10:39:01 +02:00

179 lines
5.9 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2011 Thibault Saunier <thibault.saunier@collabora.co.uk>
*
* 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.
*/
/**
* SECTION: ges-timeline-effect
* @short_description: An effect in a #GESTimelineLayer
*
* The effect will be applied on the sources that have lower priorities
* (higher number) between the inpoint and the end of it.
*
* In a #GESSimpleTimelineLayer, the priorities will be set for you but if
* you use another type of #GESTimelineLayer, you will have to handle it
* yourself.
*/
#include <ges/ges.h>
#include "ges-internal.h"
#include "ges-types.h"
G_DEFINE_TYPE (GESTimelineEffect, ges_timeline_effect,
GES_TYPE_TIMELINE_OPERATION);
struct _GESTimelineEffectPrivate
{
gchar *video_bin_description;
gchar *audio_bin_description;
};
enum
{
PROP_0,
PROP_VIDEO_BIN_DESCRIPTION,
PROP_AUDIO_BIN_DESCRIPTION,
};
static GESTrackObject *ges_tl_effect_create_track_object (GESTimelineObject
* self, GESTrack * track);
static void
ges_timeline_effect_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_timeline_effect_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec)
{
GESTimelineEffect *self = GES_TIMELINE_EFFECT (object);
switch (property_id) {
case PROP_VIDEO_BIN_DESCRIPTION:
self->priv->video_bin_description = g_value_dup_string (value);
break;
case PROP_AUDIO_BIN_DESCRIPTION:
self->priv->audio_bin_description = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_timeline_effect_class_init (GESTimelineEffectClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTimelineObjectClass *timobj_class = GES_TIMELINE_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESTimelineEffectPrivate));
object_class->get_property = ges_timeline_effect_get_property;
object_class->set_property = ges_timeline_effect_set_property;
/**
* GESTimelineEffect:video_bin_description:
*
* The description of the video track of the effect bin with a gst-launch-style
* pipeline description. This should be used for test purposes.
* exemple: videobalance saturation=1.5 hue=+0.5
*/
g_object_class_install_property (object_class, PROP_VIDEO_BIN_DESCRIPTION,
g_param_spec_string ("video-bin-description",
"Video bin description",
"Description of the video track of the effect",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
/**
* GESTimelineEffect:audio_bin_description:
*
* The description of the audio track of the effect bin with a gst-launch-style
* pipeline description. This should be used for test purposes.
* exemple: videobalance saturation=1.5 hue=+0.5
*/
g_object_class_install_property (object_class, PROP_AUDIO_BIN_DESCRIPTION,
g_param_spec_string ("audio-bin-description",
"bin description",
"Bin description of the audio track of the effect",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
timobj_class->create_track_object = ges_tl_effect_create_track_object;
timobj_class->need_fill_track = FALSE;
}
static void
ges_timeline_effect_init (GESTimelineEffect * self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_TIMELINE_EFFECT, GESTimelineEffectPrivate);
}
static GESTrackObject *
ges_tl_effect_create_track_object (GESTimelineObject * self, GESTrack * track)
{
GESTimelineEffect *effect = GES_TIMELINE_EFFECT (self);
if (track->type == GES_TRACK_TYPE_VIDEO) {
if (effect->priv->video_bin_description != NULL) {
GST_DEBUG ("Creating a GESTrackEffect for the video track");
return GES_TRACK_OBJECT (ges_track_effect_new_from_bin_desc
(effect->priv->video_bin_description));
}
GST_DEBUG ("Can't create the track Object, the\
video_bin_description is not set");
}
if (track->type == GES_TRACK_TYPE_AUDIO) {
if (effect->priv->audio_bin_description != NULL) {
GST_DEBUG ("Creating a GESTrackEffect for the audio track");
return GES_TRACK_OBJECT (ges_track_effect_new_from_bin_desc
(effect->priv->audio_bin_description));
}
GST_DEBUG ("Can't create the track Object, the\
audio_bin_description is not set");
}
GST_WARNING ("Effect doesn't handle this track type");
return NULL;
}
/**
* ges_timeline_effect_new_from_bin_desc:
* @video_bin_description: The gst-launch like bin description of the effect
* @audio_bin_description: The gst-launch like bin description of the effect
*
* Creates a new #GESTimelineEffect from the description of the bin. This is
* a convenience method for testing puposes.
*
* Returns: a newly created #GESTimelineEffect, or %NULL if something went
* wrong.
*/
GESTimelineEffect *
ges_timeline_effect_new_from_bin_desc (const gchar * video_bin_description,
const gchar * audio_bin_description)
{
return g_object_new (GES_TYPE_TIMELINE_EFFECT,
"video-bin-description", video_bin_description,
"audio-bin-description", audio_bin_description, NULL);
}