/* 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 */ #ifndef AUDIO_H #define AUDIO_H #include "../config.h" #include "mpd_types.h" #include "tag.h" #include <stdio.h> #define AUDIO_AO_DRIVER_DEFAULT "default" #define AUDIO_MAX_DEVICES 8 typedef struct _AudioFormat { volatile mpd_sint8 channels; volatile mpd_uint32 sampleRate; volatile mpd_sint8 bits; } AudioFormat; void copyAudioFormat(AudioFormat * dest, AudioFormat * src); int cmpAudioFormat(AudioFormat * dest, AudioFormat * src); void getOutputAudioFormat(AudioFormat * inFormat, AudioFormat * outFormat); int parseAudioConfig(AudioFormat * audioFormat, char * conf); /* make sure initPlayerData is called before this function!! */ void initAudioConfig(); void finishAudioConfig(); void initAudioDriver(); void finishAudioDriver(); int openAudioDevice(AudioFormat * audioFormat); int playAudio(char * playChunk,int size); void closeAudioDevice(); int isAudioDeviceOpen(); int isCurrentAudioFormat(AudioFormat * audioFormat); void sendMetadataToAudioDevice(MpdTag * tag); /* these functions are called in the main parent process while the child process is busy playing to the audio */ int enableAudioDevice(FILE * fp, int device); int disableAudioDevice(FILE * fp, int device); void printAudioDevices(FILE * fp); #endif