gstreamer/sys/sunaudio/gstsunaudiomixerctrl.c

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/*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <gst/gst-i18n-plugin.h>
#include "gstsunaudiomixerctrl.h"
#include "gstsunaudiomixertrack.h"
#define SCALE_FACTOR 2.55 /* 255/100 */
static gboolean
gst_sunaudiomixer_ctrl_open (GstSunAudioMixerCtrl * sunaudio)
{
int fd;
/* First try to open non-blocking */
fd = open (sunaudio->device, O_RDWR | O_NONBLOCK);
if (fd >= 0) {
close (fd);
fd = open (sunaudio->device, O_WRONLY);
}
if (fd == -1) {
GST_DEBUG_OBJECT (sunaudio,
"Failed to open mixer device %s, mixing disabled: %s", sunaudio->device,
strerror (errno));
return FALSE;
}
sunaudio->mixer_fd = fd;
return TRUE;
}
void
gst_sunaudiomixer_ctrl_build_list (GstSunAudioMixerCtrl * sunaudio)
{
GstMixerTrack *track;
g_return_if_fail (sunaudio->mixer_fd != -1);
track = gst_sunaudiomixer_track_new (0, 1, GST_MIXER_TRACK_OUTPUT);
sunaudio->tracklist = g_list_append (sunaudio->tracklist, track);
track = gst_sunaudiomixer_track_new (1, 1, 0);
sunaudio->tracklist = g_list_append (sunaudio->tracklist, track);
track = gst_sunaudiomixer_track_new (2, 1, 0);
sunaudio->tracklist = g_list_append (sunaudio->tracklist, track);
}
GstSunAudioMixerCtrl *
gst_sunaudiomixer_ctrl_new (const char *device)
{
GstSunAudioMixerCtrl *ret = NULL;
g_return_val_if_fail (device != NULL, NULL);
ret = g_new0 (GstSunAudioMixerCtrl, 1);
ret->device = g_strdup (device);
ret->mixer_fd = -1;
if (!gst_sunaudiomixer_ctrl_open (ret))
goto error;
return ret;
error:
if (ret)
gst_sunaudiomixer_ctrl_free (ret);
return NULL;
}
void
gst_sunaudiomixer_ctrl_free (GstSunAudioMixerCtrl * mixer)
{
g_return_if_fail (mixer != NULL);
if (mixer->device) {
g_free (mixer->device);
mixer->device = NULL;
}
if (mixer->tracklist) {
g_list_foreach (mixer->tracklist, (GFunc) g_object_unref, NULL);
g_list_free (mixer->tracklist);
mixer->tracklist = NULL;
}
if (mixer->mixer_fd != -1) {
close (mixer->mixer_fd);
mixer->mixer_fd = -1;
}
g_free (mixer);
}
const GList *
gst_sunaudiomixer_ctrl_list_tracks (GstSunAudioMixerCtrl * mixer)
{
gst_sunaudiomixer_ctrl_build_list (mixer);
return (const GList *) mixer->tracklist;
}
void
gst_sunaudiomixer_ctrl_get_volume (GstSunAudioMixerCtrl * mixer,
GstMixerTrack * track, gint * volumes)
{
struct audio_info audioinfo;
GstSunAudioMixerTrack *sunaudiotrack = GST_SUNAUDIO_MIXER_TRACK (track);
g_return_if_fail (mixer->mixer_fd != -1);
if (ioctl (mixer->mixer_fd, AUDIO_GETINFO, &audioinfo) < 0) {
g_warning ("Error getting audio device volume");
return;
}
switch (sunaudiotrack->track_num) {
case 0:
sunaudiotrack->vol = volumes[0] =
(audioinfo.play.gain / SCALE_FACTOR) + 0.5;
break;
case 1:
sunaudiotrack->vol = volumes[0] =
(audioinfo.record.gain / SCALE_FACTOR) + 0.5;
break;
case 2:
sunaudiotrack->vol = volumes[0] =
(audioinfo.monitor_gain / SCALE_FACTOR) + 0.5;
break;
}
}
void
gst_sunaudiomixer_ctrl_set_volume (GstSunAudioMixerCtrl * mixer,
GstMixerTrack * track, gint * volumes)
{
gint volume;
struct audio_info audioinfo;
GstSunAudioMixerTrack *sunaudiotrack = GST_SUNAUDIO_MIXER_TRACK (track);
g_return_if_fail (mixer->mixer_fd != -1);
volume = volumes[0] * SCALE_FACTOR + 0.5;
/* Set the volume */
AUDIO_INITINFO (&audioinfo);
switch (sunaudiotrack->track_num) {
case 0:
audioinfo.play.gain = volume;
break;
case 1:
audioinfo.record.gain = volume;
break;
case 2:
audioinfo.monitor_gain = volume;
break;
}
if (ioctl (mixer->mixer_fd, AUDIO_SETINFO, &audioinfo) < 0) {
g_warning ("Error setting audio device volume");
return;
}
sunaudiotrack->vol = volume;
}
void
gst_sunaudiomixer_ctrl_set_mute (GstSunAudioMixerCtrl * sunaudio,
GstMixerTrack * track, gboolean mute)
{
struct audio_info audioinfo;
GstSunAudioMixerTrack *sunaudiotrack = GST_SUNAUDIO_MIXER_TRACK (track);
gint volume;
g_return_if_fail (sunaudio->mixer_fd != -1);
if (sunaudiotrack->track_num != 0)
return;
AUDIO_INITINFO (&audioinfo);
if (mute) {
audioinfo.output_muted = 1;
volume = 0;
} else {
audioinfo.output_muted = 0;
volume = sunaudiotrack->vol;
}
switch (sunaudiotrack->track_num) {
case 0:
audioinfo.play.gain = volume;
break;
case 1:
audioinfo.record.gain = volume;
break;
case 2:
audioinfo.monitor_gain = volume;
break;
}
if (ioctl (sunaudio->mixer_fd, AUDIO_SETINFO, &audioinfo) < 0) {
g_warning ("Error setting audio device volume");
return;
}
}
void
gst_sunaudiomixer_ctrl_set_record (GstSunAudioMixerCtrl * mixer,
GstMixerTrack * track, gboolean record)
{
/* Implementation Pending */
}