beginnings of ao audioOutput plugin
git-svn-id: https://svn.musicpd.org/mpd/trunk@2115 09075e82-0dd4-0310-85a5-a0d7c8717e4f
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Warren Dukes
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e846891693
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5b2748297d
@ -58,4 +58,15 @@ struct _AudioOutput {
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void * data;
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};
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typedef struct _AudioOutputPlugin {
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char * name;
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AudioOutputInitConfigFunc initConfigFunc;
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AudioOutputFinishConfigFunc finishConfigFunc;
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AudioOutputInitDriverFunc initDriverFunc;
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AudioOutputFinishDriverFunc finishDriverFunc;
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AudioOutputOpenDeviceFunc openDeviceFunc;
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AudioOutputPlayFunc playFunc;
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AudioOutputCloseDevicFunc closeDeviceFunc;
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} AudioOutputPlugin;
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#endif
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262
src/audioOutput_ao.c
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262
src/audioOutput_ao.c
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@ -0,0 +1,262 @@
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/* the Music Player Daemon (MPD)
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* (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "audioOutput.h"
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#include "conf.h"
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#include "log.h"
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#include "sig_handlers.h"
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#include <string.h>
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#include <assert.h>
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#include <signal.h>
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#include <ao/ao.h>
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static int audioOutputAo_write_size;
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static int audioOutputAo_driver_id;
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static ao_option * audioOutputAo_options;
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static ao_device * audioOutputAo_device = NULL;
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void audioOutputAo_initDriver() {
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ao_info * ai;
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char * dup;
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char * stk1;
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char * stk2;
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char * n1;
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char * key;
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char * value;
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char * test;
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audio_write_size = strtol((getConf())[CONF_AUDIO_WRITE_SIZE],&test,10);
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if (*test!='\0') {
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ERROR("\"%s\" is not a valid write size",
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(getConf())[CONF_AUDIO_WRITE_SIZE]);
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exit(EXIT_FAILURE);
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}
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audio_ao_options = NULL;
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ao_initialize();
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if(strcmp(AUDIO_AO_DRIVER_DEFAULT,(getConf())[CONF_AO_DRIVER])==0) {
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audio_ao_driver_id = ao_default_driver_id();
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}
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else if((audio_ao_driver_id =
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ao_driver_id((getConf())[CONF_AO_DRIVER]))<0) {
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ERROR("\"%s\" is not a valid ao driver\n",
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(getConf())[CONF_AO_DRIVER]);
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exit(EXIT_FAILURE);
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}
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if((ai = ao_driver_info(audio_ao_driver_id))==NULL) {
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ERROR("problems getting ao_driver_info\n");
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ERROR("you may not have permission to the audio device\n");
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exit(EXIT_FAILURE);
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}
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dup = strdup((getConf())[CONF_AO_DRIVER_OPTIONS]);
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if(strlen(dup)) {
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stk1 = NULL;
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n1 = strtok_r(dup,";",&stk1);
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while(n1) {
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stk2 = NULL;
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key = strtok_r(n1,"=",&stk2);
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if(!key) {
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ERROR("problems parsing "
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"ao_driver_options \"%s\"\n", n1);
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exit(EXIT_FAILURE);
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}
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/*found = 0;
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for(i=0;i<ai->option_count;i++) {
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if(strcmp(ai->options[i],key)==0) {
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found = 1;
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break;
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}
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}
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if(!found) {
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ERROR("\"%s\" is not an option for "
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"\"%s\" ao driver\n",key,
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ai->short_name);
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exit(EXIT_FAILURE);
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}*/
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value = strtok_r(NULL,"",&stk2);
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if(!value) {
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ERROR("problems parsing "
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"ao_driver_options \"%s\"\n", n1);
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exit(EXIT_FAILURE);
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}
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ao_append_option(&audio_ao_options,key,value);
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n1 = strtok_r(NULL,";",&stk1);
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}
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}
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free(dup);
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}
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void audioOutputAo_initConfig() {
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char * conf = getConf()[CONF_AUDIO_OUTPUT_FORMAT];
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char * test;
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if(NULL == conf) return;
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audio_configFormat = malloc(sizeof(AudioFormat));
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memset(audio_configFormat,0,sizeof(AudioFormat));
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audio_configFormat->sampleRate = strtol(conf,&test,10);
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if(*test!=':') {
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ERROR("error parsing audio output format: %s\n",conf);
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exit(EXIT_FAILURE);
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}
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/*switch(audio_configFormat->sampleRate) {
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case 48000:
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case 44100:
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case 32000:
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case 16000:
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break;
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default:
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ERROR("sample rate %i can not be used for audio output\n",
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(int)audio_configFormat->sampleRate);
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exit(EXIT_FAILURE);
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}*/
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if(audio_configFormat->sampleRate <= 0) {
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ERROR("sample rate %i is not >= 0\n",
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(int)audio_configFormat->sampleRate);
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exit(EXIT_FAILURE);
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}
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audio_configFormat->bits = strtol(test+1,&test,10);
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if(*test!=':') {
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ERROR("error parsing audio output format: %s\n",conf);
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exit(EXIT_FAILURE);
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}
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switch(audio_configFormat->bits) {
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case 16:
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break;
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default:
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ERROR("bits %i can not be used for audio output\n",
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(int)audio_configFormat->bits);
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exit(EXIT_FAILURE);
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}
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audio_configFormat->channels = strtol(test+1,&test,10);
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if(*test!='\0') {
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ERROR("error parsing audio output format: %s\n",conf);
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exit(EXIT_FAILURE);
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}
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switch(audio_configFormat->channels) {
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case 2:
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break;
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default:
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ERROR("channels %i can not be used for audio output\n",
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(int)audio_configFormat->channels);
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exit(EXIT_FAILURE);
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}
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}
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void audioOutputAo_finishConfig() {
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if(audio_configFormat) free(audio_configFormat);
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}
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void audioOutputAo_finishDriver() {
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ao_free_options(audio_ao_options);
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ao_shutdown();
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}
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int audioOutputAo_openDevice(AudioFormat * audioFormat) {
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ao_sample_format format;
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if(audio_device && !isCurrentAudioFormat(audioFormat)) {
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closeAudioDevice();
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}
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if(!audio_device) {
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if(audioFormat) {
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copyAudioFormat(&audio_format,audioFormat);
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}
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format.bits = audio_format.bits;
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format.rate = audio_format.sampleRate;
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format.byte_format = AO_FMT_NATIVE;
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format.channels = audio_format.channels;
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blockSignals();
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audio_device = ao_open_live(audio_ao_driver_id, &format,
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audio_ao_options);
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unblockSignals();
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if(audio_device==NULL) return -1;
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}
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return 0;
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}
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int audioOutputAo_playAudio(char * playChunk, int size) {
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int send;
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if(audio_device==NULL) {
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ERROR("trying to play w/o the audio device being open!\n");
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return -1;
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}
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while(size>0) {
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send = audio_write_size>size?size:audio_write_size;
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if(ao_play(audio_device,playChunk,send)==0) {
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audioError();
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ERROR("closing audio device due to write error\n");
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closeAudioDevice();
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return -1;
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}
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playChunk+=send;
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size-=send;
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}
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return 0;
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}
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void audioOutputAo_closeAudioDevice() {
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if(audio_device) {
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blockSignals();
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ao_close(audio_device);
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audio_device = NULL;
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unblockSignals();
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}
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}
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AudioOutputPlugin aoPlugin =
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{
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"ao",
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audioOutputAo_initConfig,
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audioOutputAo_finishConfig,
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audioOutputAo_initDriver,
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audioOutputAo_finishDriver,
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audioOutputAo_openDevice,
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audioOutputAo_play,
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audioOutputAo_closeDevice
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};
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