gstreamer/ges/ges-timeline-file-source.c
2010-12-09 15:12:34 +01:00

283 lines
8.6 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 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.
*/
/**
* SECTION:ges-timeline-filesource
* @short_description: An object for manipulating media files in a GESTimeline
*
* Represents all the output treams from a particular uri. It is assumed that
* the URI points to a file of some type.
*/
#include "ges-internal.h"
#include "ges-timeline-file-source.h"
#include "ges-timeline-source.h"
#include "ges-track-filesource.h"
#include "ges-track-image-source.h"
#include "ges-track-audio-test-source.h"
G_DEFINE_TYPE (GESTimelineFileSource, ges_tl_filesource,
GES_TYPE_TIMELINE_SOURCE);
enum
{
PROP_0,
PROP_URI,
PROP_MAX_DURATION,
PROP_MUTE,
PROP_SUPPORTED_FORMATS,
PROP_IS_IMAGE,
};
static void
ges_tl_filesource_set_mute (GESTimelineFileSource * self, gboolean mute);
static void
ges_tl_filesource_set_max_duration (GESTimelineFileSource * self,
guint64 maxduration);
static GESTrackObject
* ges_tl_filesource_create_track_object (GESTimelineObject * obj,
GESTrack * track);
static void
ges_tl_filesource_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTimelineFileSource *tfs = GES_TIMELINE_FILE_SOURCE (object);
switch (property_id) {
case PROP_URI:
g_value_set_string (value, tfs->uri);
break;
case PROP_MUTE:
g_value_set_boolean (value, tfs->mute);
break;
case PROP_MAX_DURATION:
g_value_set_uint64 (value, tfs->maxduration);
break;
case PROP_SUPPORTED_FORMATS:
g_value_set_flags (value, tfs->supportedformats);
break;
case PROP_IS_IMAGE:
g_value_set_boolean (value, tfs->is_image);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_tl_filesource_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTimelineFileSource *tfs = GES_TIMELINE_FILE_SOURCE (object);
switch (property_id) {
case PROP_URI:
tfs->uri = g_value_dup_string (value);
break;
case PROP_MUTE:
ges_tl_filesource_set_mute (tfs, g_value_get_boolean (value));
break;
case PROP_MAX_DURATION:
ges_tl_filesource_set_max_duration (tfs, g_value_get_uint64 (value));
break;
case PROP_SUPPORTED_FORMATS:
tfs->supportedformats = g_value_get_flags (value);
break;
case PROP_IS_IMAGE:
tfs->is_image = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_tl_filesource_finalize (GObject * object)
{
GESTimelineFileSource *tfs = GES_TIMELINE_FILE_SOURCE (object);
if (tfs->uri)
g_free (tfs->uri);
G_OBJECT_CLASS (ges_tl_filesource_parent_class)->finalize (object);
}
static void
ges_tl_filesource_class_init (GESTimelineFileSourceClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTimelineObjectClass *timobj_class = GES_TIMELINE_OBJECT_CLASS (klass);
object_class->get_property = ges_tl_filesource_get_property;
object_class->set_property = ges_tl_filesource_set_property;
object_class->finalize = ges_tl_filesource_finalize;
/**
* GESTimelineFileSource:uri:
*
* The location of the file/resource to use.
*/
g_object_class_install_property (object_class, PROP_URI,
g_param_spec_string ("uri", "URI", "uri of the resource",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
/**
* GESTimelineFileSource:max-duration:
*
* The maximum duration (in nanoseconds) of the file.
*
* If not set before adding the object to a layer, it will be discovered
* asynchronously. Connect to 'notify::max-duration' to be notified of it.
*/
g_object_class_install_property (object_class, PROP_MAX_DURATION,
g_param_spec_uint64 ("max-duration", "Maximum duration",
"The duration of the file", 0, G_MAXUINT64, GST_CLOCK_TIME_NONE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
/**
* GESTimelineFileSource:mute:
*
* Whether the sound will be played or not.
*/
g_object_class_install_property (object_class, PROP_MUTE,
g_param_spec_boolean ("mute", "Mute", "Mute audio track",
FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
/**
* GESTimelineFileSource:supported-formats:
*
* Whether the sound will be played or not.
*/
g_object_class_install_property (object_class, PROP_SUPPORTED_FORMATS,
g_param_spec_flags ("supported-formats", "Supported formats",
"Formats supported by the file", GES_TYPE_TRACK_TYPE,
GES_TRACK_TYPE_UNKNOWN, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
/**
* GESTimelineFileSource:is-image:
*
* Whether this filesource represents a still image or not. This must be set
* before create_track_objects is called.
*/
g_object_class_install_property (object_class, PROP_IS_IMAGE,
g_param_spec_boolean ("is-image", "Is still image",
"Whether the timeline object represents a still image or not",
FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
timobj_class->create_track_object = ges_tl_filesource_create_track_object;
timobj_class->need_fill_track = FALSE;
}
static void
ges_tl_filesource_init (GESTimelineFileSource * self)
{
/* Setting the duration to -1 by default. */
GES_TIMELINE_OBJECT (self)->duration = GST_CLOCK_TIME_NONE;
}
static void
ges_tl_filesource_set_mute (GESTimelineFileSource * self, gboolean mute)
{
GList *tmp, *trackobjects;
GESTimelineObject *object = (GESTimelineObject *) self;
GST_DEBUG ("self:%p, mute:%d", self, mute);
self->mute = mute;
/* Go over tracked objects, and update 'active' status on all audio objects */
trackobjects = ges_timeline_object_get_track_objects (object);
for (tmp = trackobjects; tmp; tmp = tmp->next) {
GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
if (trackobject->track->type == GES_TRACK_TYPE_AUDIO)
ges_track_object_set_active (trackobject, !mute);
g_object_unref (GES_TRACK_OBJECT (tmp->data));
}
g_list_free (trackobjects);
}
static void
ges_tl_filesource_set_max_duration (GESTimelineFileSource * self,
guint64 maxduration)
{
GESTimelineObject *object = GES_TIMELINE_OBJECT (self);
self->maxduration = maxduration;
if (object->duration == GST_CLOCK_TIME_NONE || object->duration == 0) {
/* If we don't have a valid duration, use the max duration */
g_object_set (self, "duration", self->maxduration - object->inpoint, NULL);
}
}
static GESTrackObject *
ges_tl_filesource_create_track_object (GESTimelineObject * obj,
GESTrack * track)
{
GESTimelineFileSource *tfs = (GESTimelineFileSource *) obj;
GESTrackObject *res;
if (!(tfs->supportedformats & track->type)) {
GST_DEBUG ("We don't support this track format");
return NULL;
}
if (tfs->is_image) {
if (track->type != GES_TRACK_TYPE_VIDEO) {
GST_DEBUG ("Object is still image, creating silent audio source");
res = (GESTrackObject *) ges_track_audio_test_source_new ();
} else {
GST_DEBUG ("Creating a GESTrackImageSource");
res = (GESTrackObject *) ges_track_image_source_new (tfs->uri);
}
}
else {
GST_DEBUG ("Creating a GESTrackFileSource");
/* FIXME : Implement properly ! */
res = (GESTrackObject *) ges_track_filesource_new (tfs->uri);
/* If mute and track is audio, deactivate the track object */
if (track->type == GES_TRACK_TYPE_AUDIO && tfs->mute)
ges_track_object_set_active (res, FALSE);
}
return res;
}
/**
* ges_timeline_filesource_new:
* @uri: the URI the source should control
*
* Creates a new #GESTimelineFileSource for the provided @uri.
*
* Returns: The newly created #GESTimelineFileSource, or NULL if there was an
* error.
*/
GESTimelineFileSource *
ges_timeline_filesource_new (gchar * uri)
{
/* FIXME : Check for validity/existence of URI */
return g_object_new (GES_TYPE_TIMELINE_FILE_SOURCE, "uri", uri, NULL);
}