mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-08 10:31:05 +00:00
9b94e38300
Original commit message from CVS: add Sun Audio plugin. Verified that nothing breaks and that make check works. Don't think the docs gets properly built yet, but I don't understand exactly how to enable that.
110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2005 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
|
|
*
|
|
* <refsect2>
|
|
* <para>
|
|
* sunaudiomixer is an mixer that controls the sound input and output
|
|
* levels with the Sun Audio interface available in Solaris.
|
|
* </para>
|
|
* </refsect2>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstsunaudiomixer.h"
|
|
|
|
static 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 ("/dev/%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;
|
|
}
|