/* 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 */ #ifndef MPD_AUDIO_H #define MPD_AUDIO_H #include <stdbool.h> #include <stdio.h> #define AUDIO_AO_DRIVER_DEFAULT "default" struct audio_format; struct tag; struct client; struct config_param; unsigned int audio_output_count(void); void getOutputAudioFormat(const struct audio_format *inFormat, struct audio_format *outFormat); int parseAudioConfig(struct audio_format *audioFormat, char *conf); /* make sure initPlayerData is called before this function!! */ void initAudioConfig(void); void finishAudioConfig(void); void initAudioDriver(void); void finishAudioDriver(void); bool openAudioDevice(const struct audio_format *audioFormat); bool playAudio(const char *playChunk, size_t size); void audio_output_pause_all(void); void dropBufferedAudio(void); void closeAudioDevice(void); bool isCurrentAudioFormat(const struct audio_format *audioFormat); void sendMetadataToAudioDevice(const struct tag *tag); /* these functions are called in the main parent process while the child process is busy playing to the audio */ int enableAudioDevice(unsigned int device); int disableAudioDevice(unsigned int device); void printAudioDevices(struct client *client); void readAudioDevicesState(FILE *fp); void saveAudioDevicesState(FILE *fp); bool mixer_control_setvol(unsigned int device, int volume, int rel); bool mixer_control_getvol(unsigned int device, int *volume); bool mixer_configure_legacy(char *name, struct config_param *param); #endif