gstreamer/ges/ges-video-test-source.c
Simon Corsin a635e48d77 GES: Add GESVideoSource and GESAudioSource base classes
+ Update documentation.
  + Implements subclasses audio-uri-source and video-uri-source
2013-09-03 20:22:32 -04:00

138 lines
3.8 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon.lewis@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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:ges-video-test-source
* @short_description: produce solid colors and patterns
*/
#include "ges-internal.h"
#include "ges-track-element.h"
#include "ges-video-test-source.h"
G_DEFINE_TYPE (GESVideoTestSource, ges_video_test_source,
GES_TYPE_VIDEO_SOURCE);
#define DEFAULT_VPATTERN GES_VIDEO_TEST_PATTERN_SMPTE
struct _GESVideoTestSourcePrivate
{
GESVideoTestPattern pattern;
};
static GstElement *ges_video_test_source_create_source (GESTrackElement * self);
static void
ges_video_test_source_class_init (GESVideoTestSourceClass * klass)
{
GESVideoSourceClass *source_class = GES_VIDEO_SOURCE_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESVideoTestSourcePrivate));
source_class->create_source = ges_video_test_source_create_source;
}
static void
ges_video_test_source_init (GESVideoTestSource * self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_VIDEO_TEST_SOURCE, GESVideoTestSourcePrivate);
self->priv->pattern = DEFAULT_VPATTERN;
}
static GstElement *
ges_video_test_source_create_source (GESTrackElement * self)
{
gint pattern;
GstElement *testsrc, *capsfilter;
const gchar *props[] = { "pattern", NULL };
testsrc = gst_element_factory_make ("videotestsrc", NULL);
capsfilter = gst_element_factory_make ("capsfilter", NULL);
pattern = ((GESVideoTestSource *) self)->priv->pattern;
g_object_set (testsrc, "pattern", pattern, NULL);
g_object_set (capsfilter, "caps", gst_caps_new_empty_simple ("video/x-raw"),
NULL);
ges_track_element_add_children_props (self, testsrc, NULL, NULL, props);
return ges_source_create_topbin ("videotestsrc", testsrc, capsfilter, NULL);
}
/**
* ges_video_test_source_set_pattern:
* @self: a #GESVideoTestSource
* @pattern: a #GESVideoTestPattern
*
* Sets the source to use the given @pattern.
*/
void
ges_video_test_source_set_pattern (GESVideoTestSource
* self, GESVideoTestPattern pattern)
{
GstElement *element =
ges_track_element_get_element (GES_TRACK_ELEMENT (self));
self->priv->pattern = pattern;
if (element) {
GValue val = { 0 };
g_value_init (&val, GES_VIDEO_TEST_PATTERN_TYPE);
g_value_set_enum (&val, pattern);
ges_track_element_set_child_property (GES_TRACK_ELEMENT (self), "pattern",
&val);
}
}
/**
* ges_video_test_source_get_pattern:
* @source: a #GESVideoTestPattern
*
* Get the video pattern used by the @source.
*
* Returns: The video pattern used by the @source.
*/
GESVideoTestPattern
ges_video_test_source_get_pattern (GESVideoTestSource * source)
{
GValue val = { 0 };
ges_track_element_get_child_property (GES_TRACK_ELEMENT (source), "pattern",
&val);
return g_value_get_enum (&val);
}
/**
* ges_video_test_source_new:
*
* Creates a new #GESVideoTestSource.
*
* Returns: The newly created #GESVideoTestSource, or %NULL if there was an
* error.
*/
GESVideoTestSource *
ges_video_test_source_new (void)
{
return g_object_new (GES_TYPE_VIDEO_TEST_SOURCE, "track-type",
GES_TRACK_TYPE_VIDEO, NULL);
}