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134 lines
3.1 KiB
C
134 lines
3.1 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* mixer.c: mixer design virtual class function wrappers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/mixer/mixer.h>
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static void gst_mixer_class_init (GstMixerClass *klass);
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GType
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gst_mixer_get_type (void)
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{
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static GType gst_mixer_type = 0;
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if (!gst_mixer_type) {
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static const GTypeInfo gst_mixer_info = {
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sizeof (GstMixerClass),
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(GBaseInitFunc) gst_mixer_class_init,
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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0,
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NULL,
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};
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gst_mixer_type = g_type_register_static (G_TYPE_INTERFACE,
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"GstMixer",
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&gst_mixer_info, 0);
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g_type_interface_add_prerequisite (gst_mixer_type,
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GST_TYPE_INTERFACE);
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}
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return gst_mixer_type;
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}
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static void
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gst_mixer_class_init (GstMixerClass *klass)
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{
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/* default virtual functions */
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klass->list_channels = NULL;
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klass->set_volume = NULL;
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klass->get_volume = NULL;
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klass->set_mute = NULL;
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klass->set_record = NULL;
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}
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const GList *
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gst_mixer_list_channels (GstMixer *mixer)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->list_channels) {
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return klass->list_channels (mixer);
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}
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return NULL;
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}
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void
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gst_mixer_set_volume (GstMixer *mixer,
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GstMixerChannel *channel,
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gint *volumes)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->set_volume) {
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klass->set_volume (mixer, channel, volumes);
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}
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}
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void
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gst_mixer_get_volume (GstMixer *mixer,
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GstMixerChannel *channel,
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gint *volumes)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->get_volume) {
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klass->get_volume (mixer, channel, volumes);
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} else {
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gint i;
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for (i = 0; i < channel->num_channels; i++) {
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volumes[i] = 0;
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}
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}
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}
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void
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gst_mixer_set_mute (GstMixer *mixer,
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GstMixerChannel *channel,
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gboolean mute)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->set_mute) {
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klass->set_mute (mixer, channel, mute);
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}
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}
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void
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gst_mixer_set_record (GstMixer *mixer,
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GstMixerChannel *channel,
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gboolean record)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->set_record) {
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klass->set_record (mixer, channel, record);
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}
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}
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