/* 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; void copyAudioFormat(AudioFormat * dest, AudioFormat * src) { if(!src) return; dest->sampleRate = src->sampleRate; dest->bits = src->bits; dest->channels = src->channels; } static AudioOutput ** audioOutputArray = NULL; static int audioOutputArraySize = 0; extern AudioOutputPlugin aoPlugin; extern AudioOutputPlugin shoutPlugin; extern AudioOutputPlugin ossPlugin; void initAudioDriver() { ConfigParam * param = NULL; int i; initAudioOutputPlugins(); loadAudioOutputPlugin(&aoPlugin); loadAudioOutputPlugin(&shoutPlugin); loadAudioOutputPlugin(&ossPlugin); while((param = getNextConfigParam(CONF_AUDIO_OUTPUT, param))) { i = audioOutputArraySize++; audioOutputArray = realloc(audioOutputArray, audioOutputArraySize*sizeof(AudioOutput *)); audioOutputArray[i] = newAudioOutput(param); if(!audioOutputArray[i]) { ERROR("problems configuring output device defined at " "line %i\n", param->line); exit(EXIT_FAILURE); } } } void getOutputAudioFormat(AudioFormat * inAudioFormat, AudioFormat * outAudioFormat) { if(audio_configFormat) { copyAudioFormat(outAudioFormat,audio_configFormat); } else copyAudioFormat(outAudioFormat,inAudioFormat); } void initAudioConfig() { ConfigParam * param = getConfigParam(CONF_AUDIO_OUTPUT_FORMAT); if(NULL == param || NULL == param->value) return; audio_configFormat = malloc(sizeof(AudioFormat)); if(0 != parseAudioConfig(audio_configFormat, param->value)) { ERROR("error parsing \"%s\" at line %i\n", CONF_AUDIO_OUTPUT_FORMAT, param->line); exit(EXIT_FAILURE); } } int parseAudioConfig(AudioFormat * audioFormat, char * conf) { char * test; memset(audioFormat,0,sizeof(AudioFormat)); audioFormat->sampleRate = strtol(conf,&test,10); if(*test!=':') { ERROR("error parsing audio output format: %s\n",conf); return -1; } /*switch(audioFormat->sampleRate) { case 48000: case 44100: case 32000: case 16000: break; default: ERROR("sample rate %i can not be used for audio output\n", (int)audioFormat->sampleRate); return -1 }*/ if(audioFormat->sampleRate <= 0) { ERROR("sample rate %i is not >= 0\n", (int)audioFormat->sampleRate); return -1; } audioFormat->bits = strtol(test+1,&test,10); if(*test!=':') { ERROR("error parsing audio output format: %s\n",conf); return -1; } switch(audioFormat->bits) { case 16: break; default: ERROR("bits %i can not be used for audio output\n", (int)audioFormat->bits); return -1; } audioFormat->channels = strtol(test+1,&test,10); if(*test!='\0') { ERROR("error parsing audio output format: %s\n",conf); return -1; } switch(audioFormat->channels) { case 1: case 2: break; default: ERROR("channels %i can not be used for audio output\n", (int)audioFormat->channels); return -1; } return 0; } void finishAudioConfig() { if(audio_configFormat) free(audio_configFormat); } void finishAudioDriver() { int i; for(i = 0; i < audioOutputArraySize; i++) { finishAudioOutput(audioOutputArray[i]); } free(audioOutputArray); audioOutputArray = NULL; audioOutputArraySize = 0; } int isCurrentAudioFormat(AudioFormat * audioFormat) { if(!audioFormat) return 1; if(memcmp(audioFormat,&audio_format,sizeof(AudioFormat)) != 0) return 0; return 1; } int openAudioDevice(AudioFormat * audioFormat) { int isCurrentFormat = isCurrentAudioFormat(audioFormat); int ret = -1; int i; if(!audioOutputArray) return -1; if(!isCurrentFormat) { copyAudioFormat(&audio_format, audioFormat); } for(i = 0; i < audioOutputArraySize; i++) { if(!audioOutputArray[i]->open || !isCurrentFormat) { openAudioOutput(audioOutputArray[i], &audio_format); } if(audioOutputArray[i]->open) ret = 0; } return ret; } int playAudio(char * playChunk, int size) { int ret = -1; int i; for(i = 0; i < audioOutputArraySize; i++) { if(0 == playAudioOutput(audioOutputArray[i], playChunk, size)) { ret = 0; } } return ret; } int isAudioDeviceOpen() { int ret = 0; int i; for(i = 0; i < audioOutputArraySize; i++) { ret |= audioOutputArray[i]->open; } return ret; } void closeAudioDevice() { int i; for(i = 0; i < audioOutputArraySize; i++) { closeAudioOutput(audioOutputArray[i]); } } void sendMetadataToAudioDevice(MpdTag * tag) { int i; for(i = 0; i < audioOutputArraySize; i++) { sendMetadataToAudioOutput(audioOutputArray[i], tag); } }