gstreamer/gst-libs/gst/audio/mixeroptions.c
Wim Taymans 47cbb230e9 audio: move audio interfaces
Move the audio related interfaces to the audio library.
2011-11-30 07:57:02 +01:00

146 lines
3.8 KiB
C

/* GStreamer Mixer
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* mixeroptions.c: mixer track options object design
*
* 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:gstmixeroptions
* @short_description: Multi-option mixer control
* @see_also: GstMixer, GstMixerTrack
*
* Mixer control object that allows switching between multiple options.
* Note that <classname>GstMixerOptions</classname> is a subclass of
* <classname>GstMixerTrack</classname>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mixeroptions.h"
#if 0
enum
{
/* FILL ME */
SIGNAL_OPTION_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
#endif
static void gst_mixer_options_class_init (GstMixerOptionsClass * klass);
static void gst_mixer_options_init (GstMixerOptions * mixer);
static void gst_mixer_options_dispose (GObject * object);
static GObjectClass *parent_class = NULL;
GType
gst_mixer_options_get_type (void)
{
static GType gst_mixer_options_type = 0;
if (!gst_mixer_options_type) {
static const GTypeInfo mixer_options_info = {
sizeof (GstMixerOptionsClass),
NULL,
NULL,
(GClassInitFunc) gst_mixer_options_class_init,
NULL,
NULL,
sizeof (GstMixerOptions),
0,
(GInstanceInitFunc) gst_mixer_options_init,
NULL
};
gst_mixer_options_type =
g_type_register_static (GST_TYPE_MIXER_TRACK,
"GstMixerOptions", &mixer_options_info, 0);
}
return gst_mixer_options_type;
}
static void
gst_mixer_options_class_init (GstMixerOptionsClass * klass)
{
GObjectClass *object_klass = (GObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
#if 0
signals[SIGNAL_OPTION_CHANGED] =
g_signal_new ("option_changed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstMixerOptionsClass, option_changed),
NULL, NULL, g_cclosure_marshal_VOID__STRING,
G_TYPE_NONE, 1, G_TYPE_STRING);
#endif
object_klass->dispose = gst_mixer_options_dispose;
}
static void
gst_mixer_options_init (GstMixerOptions * mixer_options)
{
mixer_options->values = NULL;
}
/**
* gst_mixer_options_get_values:
* @mixer_options: The #GstMixerOptions item that owns the values.
*
* Get the values for the mixer option.
*
* Returns: A list of strings with all the possible values for the mixer
* option. You must not free or modify the list or its contents, it belongs
* to the @mixer_options object.
*/
GList *
gst_mixer_options_get_values (GstMixerOptions * mixer_options)
{
GstMixerOptionsClass *klass;
GList *ret = NULL;
g_return_val_if_fail (GST_IS_MIXER_OPTIONS (mixer_options), NULL);
klass = GST_MIXER_OPTIONS_GET_CLASS (mixer_options);
if (klass->get_values != NULL) {
ret = klass->get_values (mixer_options);
} else {
ret = mixer_options->values;
}
return ret;
}
static void
gst_mixer_options_dispose (GObject * object)
{
GstMixerOptions *opts = GST_MIXER_OPTIONS (object);
g_list_foreach (opts->values, (GFunc) g_free, NULL);
g_list_free (opts->values);
opts->values = NULL;
if (parent_class->dispose)
parent_class->dispose (object);
}