gstreamer/ges/ges-video-test-source.c

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/* 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
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:ges-video-test-source
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* @short_description: produce solid colors and patterns
*/
#include "ges-internal.h"
#include "ges-track-element.h"
#include "ges-video-test-source.h"
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G_DEFINE_TYPE (GESVideoTestSource, ges_video_test_source, GES_TYPE_SOURCE);
#define DEFAULT_VPATTERN GES_VIDEO_TEST_PATTERN_SMPTE
struct _GESVideoTestSourcePrivate
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{
GESVideoTestPattern pattern;
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};
static GstElement *ges_video_test_source_create_element (GESTrackElement *
self);
static void
ges_video_test_source_class_init (GESVideoTestSourceClass * klass)
{
GESTrackElementClass *track_element_class = GES_TRACK_ELEMENT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESVideoTestSourcePrivate));
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track_element_class->create_element = ges_video_test_source_create_element;
}
static void
ges_video_test_source_init (GESVideoTestSource * self)
{
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self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_VIDEO_TEST_SOURCE, GESVideoTestSourcePrivate);
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self->priv->pattern = DEFAULT_VPATTERN;
}
static GstElement *
ges_video_test_source_create_element (GESTrackElement * self)
{
gint pattern;
GstElement *ret;
gchar *bin_desc;
pattern = ((GESVideoTestSource *) self)->priv->pattern;
bin_desc =
g_strdup_printf
("videotestsrc pattern=%i name=testsrc ! capsfilter caps=video/x-raw",
pattern);
ret = gst_parse_bin_from_description (bin_desc, TRUE, NULL);
g_free (bin_desc);
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return ret;
}
/**
* 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));
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self->priv->pattern = pattern;
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if (element)
gst_child_proxy_set (GST_CHILD_PROXY (element), "testsrc::pattern",
(gint) pattern, NULL);
}
/**
* 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)
{
return source->priv->pattern;
}
/**
* 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);
}