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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "audio.h"
#include "audio_format.h"
#include "output_api.h"
#include "output_control.h"
#include "output_internal.h"
#include "output_all.h"
#include "path.h"
#include "idle.h"
#include "mixer_api.h"
#include <glib.h>
#include <assert.h>
#include <stdlib.h>
static struct audio_format configured_audio_format;
void getOutputAudioFormat(const struct audio_format *inAudioFormat,
struct audio_format *outAudioFormat)
{
*outAudioFormat = audio_format_defined(&configured_audio_format)
? configured_audio_format
: *inAudioFormat;
}
void initAudioConfig(void)
{
const struct config_param *param = config_get_param(CONF_AUDIO_OUTPUT_FORMAT);
if (NULL == param || NULL == param->value)
return;
if (0 != parseAudioConfig(&configured_audio_format, param->value)) {
g_error("error parsing \"%s\" at line %i\n",
CONF_AUDIO_OUTPUT_FORMAT, param->line);
}
}
int parseAudioConfig(struct audio_format *audioFormat, char *conf)
{
char *test;
memset(audioFormat, 0, sizeof(*audioFormat));
audioFormat->sample_rate = strtol(conf, &test, 10);
if (*test != ':') {
g_warning("error parsing audio output format: %s\n", conf);
return -1;
}
if (audioFormat->sample_rate <= 0) {
g_warning("sample rate %u is not >= 0\n",
audioFormat->sample_rate);
return -1;
}
audioFormat->bits = (uint8_t)strtoul(test + 1, &test, 10);
if (*test != ':') {
g_warning("error parsing audio output format: %s\n", conf);
return -1;
}
if (audioFormat->bits != 16 && audioFormat->bits != 24 &&
audioFormat->bits != 8) {
g_warning("bits %u can not be used for audio output\n",
audioFormat->bits);
return -1;
}
audioFormat->channels = (uint8_t)strtoul(test + 1, &test, 10);
if (*test != '\0') {
g_warning("error parsing audio output format: %s\n", conf);
return -1;
}
switch (audioFormat->channels) {
case 1:
case 2:
break;
default:
g_warning("channels %u can not be used for audio output\n",
audioFormat->channels);
return -1;
}
return 0;
}
void finishAudioConfig(void)
{
audio_format_clear(&configured_audio_format);
}
int enableAudioDevice(unsigned int device)
{
struct audio_output *ao;
if (device >= audio_output_count())
return -1;
ao = audio_output_get(device);
ao->reopen_after = 0;
ao->enabled = true;
idle_add(IDLE_OUTPUT);
return 0;
}
int disableAudioDevice(unsigned int device)
{
struct audio_output *ao;
if (device >= audio_output_count())
return -1;
ao = audio_output_get(device);
ao->enabled = false;
idle_add(IDLE_OUTPUT);
return 0;
}
bool mixer_control_setvol(unsigned int device, int volume, int rel)
{
struct audio_output *output;
if (device >= audio_output_count())
return false;
output = audio_output_get(device);
if (output->plugin && output->plugin->control) {
if (rel) {
int cur_volume;
if (!output->plugin->control(output->data, AC_MIXER_GETVOL, &cur_volume)) {
return false;
}
volume = volume + cur_volume;
}
if (volume > 100)
volume = 100;
else if (volume < 0)
volume = 0;
return output->plugin->control(output->data, AC_MIXER_SETVOL, &volume);
}
return false;
}
bool mixer_control_getvol(unsigned int device, int *volume)
{
struct audio_output *output;
if (device >= audio_output_count())
return false;
output = audio_output_get(device);
if (output->plugin && output->plugin->control) {
return output->plugin->control(output->data, AC_MIXER_GETVOL, volume);
}
return false;
}
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