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/*
* GStreamer - SunAudio mixer
* Copyright (C) 2005,2006 Sun Microsystems, Inc.,
* Brian Cameron <brian.cameron@sun.com>
*
* 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:element-sunaudiomixer
*
* sunaudiomixer is an mixer that controls the sound input and output
* levels with the Sun Audio interface available in Solaris.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstsunaudiomixer.h"
static const GstElementDetails gst_sunaudiomixer_details =
GST_ELEMENT_DETAILS ("Sun Audio Mixer",
"Generic/Audio",
"Control sound input and output levels with Sun Audio",
"Brian Cameron <brian.cameron@sun.com>");
GST_BOILERPLATE_WITH_INTERFACE (GstSunAudioMixer, gst_sunaudiomixer,
GstElement, GST_TYPE_ELEMENT, GstMixer, GST_TYPE_MIXER, gst_sunaudiomixer);
GST_IMPLEMENT_SUNAUDIO_MIXER_CTRL_METHODS (GstSunAudioMixer, gst_sunaudiomixer);
static GstStateChangeReturn gst_sunaudiomixer_change_state (GstElement *
element, GstStateChange transition);
static void
gst_sunaudiomixer_base_init (gpointer klass)
{
gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
&gst_sunaudiomixer_details);
}
static void
gst_sunaudiomixer_class_init (GstSunAudioMixerClass * klass)
{
GstElementClass *element_class;
element_class = (GstElementClass *) klass;
element_class->change_state = gst_sunaudiomixer_change_state;
}
static void
gst_sunaudiomixer_init (GstSunAudioMixer * this,
GstSunAudioMixerClass * g_class)
{
this->mixer = NULL;
}
static GstStateChangeReturn
gst_sunaudiomixer_change_state (GstElement * element, GstStateChange transition)
{
GstSunAudioMixer *this = GST_SUNAUDIO_MIXER (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!this->mixer) {
const char *audiodev;
audiodev = g_getenv ("AUDIODEV");
if (audiodev == NULL) {
this->mixer = gst_sunaudiomixer_ctrl_new ("/dev/audioctl");
} else {
gchar *device = g_strdup_printf ("%sctl", audiodev);
this->mixer = gst_sunaudiomixer_ctrl_new (device);
g_free (device);
}
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (this->mixer) {
gst_sunaudiomixer_ctrl_free (this->mixer);
this->mixer = NULL;
}
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
}
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