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/* the Music Player Daemon (MPD)
* (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
* 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 "audioOutput.h"
#include "conf.h"
#include "log.h"
#include "sig_handlers.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <signal.h>
static AudioFormat audio_format;
static AudioFormat * audio_configFormat = NULL;
static AudioOutput * aoOutput = NULL;
static AudioOutput * shoutOutput = NULL;
static void copyAudioFormat(AudioFormat * dest, AudioFormat * src) {
dest->sampleRate = src->sampleRate;
dest->bits = src->bits;
dest->channels = src->channels;
}
extern AudioOutputPlugin aoPlugin;
extern AudioOutputPlugin shoutPlugin;
void initAudioDriver() {
initAudioOutputPlugins();
loadAudioOutputPlugin(&aoPlugin);
loadAudioOutputPlugin(&shoutPlugin);
aoOutput = newAudioOutput("ao");
assert(aoOutput);
shoutOutput = newAudioOutput("shout");
}
void getOutputAudioFormat(AudioFormat * inAudioFormat,
AudioFormat * outAudioFormat)
{
if(audio_configFormat) {
copyAudioFormat(outAudioFormat,audio_configFormat);
}
else copyAudioFormat(outAudioFormat,inAudioFormat);
}
void initAudioConfig() {
char * conf = getConf()[CONF_AUDIO_OUTPUT_FORMAT];
char * test;
if(NULL == conf) return;
audio_configFormat = malloc(sizeof(AudioFormat));
memset(audio_configFormat,0,sizeof(AudioFormat));
audio_configFormat->sampleRate = strtol(conf,&test,10);
if(*test!=':') {
ERROR("error parsing audio output format: %s\n",conf);
exit(EXIT_FAILURE);
}
/*switch(audio_configFormat->sampleRate) {
case 48000:
case 44100:
case 32000:
case 16000:
break;
default:
ERROR("sample rate %i can not be used for audio output\n",
(int)audio_configFormat->sampleRate);
exit(EXIT_FAILURE);
}*/
if(audio_configFormat->sampleRate <= 0) {
ERROR("sample rate %i is not >= 0\n",
(int)audio_configFormat->sampleRate);
exit(EXIT_FAILURE);
}
audio_configFormat->bits = strtol(test+1,&test,10);
if(*test!=':') {
ERROR("error parsing audio output format: %s\n",conf);
exit(EXIT_FAILURE);
}
switch(audio_configFormat->bits) {
case 16:
break;
default:
ERROR("bits %i can not be used for audio output\n",
(int)audio_configFormat->bits);
exit(EXIT_FAILURE);
}
audio_configFormat->channels = strtol(test+1,&test,10);
if(*test!='\0') {
ERROR("error parsing audio output format: %s\n",conf);
exit(EXIT_FAILURE);
}
switch(audio_configFormat->channels) {
case 2:
break;
default:
ERROR("channels %i can not be used for audio output\n",
(int)audio_configFormat->channels);
exit(EXIT_FAILURE);
}
}
void finishAudioConfig() {
if(audio_configFormat) free(audio_configFormat);
}
void finishAudioDriver() {
finishAudioOutput(aoOutput);
if(shoutOutput) finishAudioOutput(shoutOutput);
aoOutput = NULL;
}
int isCurrentAudioFormat(AudioFormat * audioFormat) {
if(!audioFormat) return 0;
if(memcmp(audioFormat,&audio_format,sizeof(AudioFormat)) != 0) return 0;
return 1;
}
int openAudioDevice(AudioFormat * audioFormat) {
if(!aoOutput->open || !isCurrentAudioFormat(audioFormat)) {
if(!audioFormat) return -1;
copyAudioFormat(&audio_format, audioFormat);
if(shoutOutput) openAudioOutput(shoutOutput, audioFormat);
return openAudioOutput(aoOutput, audioFormat);
}
return 0;
}
int playAudio(char * playChunk, int size) {
if(shoutOutput) playAudioOutput(shoutOutput, playChunk, size);
return playAudioOutput(aoOutput, playChunk, size);
}
int isAudioDeviceOpen() {
return aoOutput->open;
}
void closeAudioDevice() {
if(shoutOutput) closeAudioOutput(shoutOutput);
closeAudioOutput(aoOutput);
}
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