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-rw-r--r--trunk/src/audio.h83
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+/* 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 AUDIO_H
+#define AUDIO_H
+
+#include "../config.h"
+
+#include "mpd_types.h"
+#include "tag.h"
+
+#include <stdio.h>
+
+#define AUDIO_AO_DRIVER_DEFAULT "default"
+
+typedef struct _AudioFormat {
+ volatile mpd_sint8 channels;
+ volatile mpd_uint32 sampleRate;
+ volatile mpd_sint8 bits;
+} AudioFormat;
+
+size_t audio_device_count(void);
+
+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);
+
+void finishAudioConfig(void);
+
+void initAudioDriver(void);
+
+void finishAudioDriver(void);
+
+int openAudioDevice(AudioFormat * audioFormat);
+
+int playAudio(char *playChunk, int size);
+
+void dropBufferedAudio(void);
+
+void closeAudioDevice(void);
+
+int isAudioDeviceOpen(void);
+
+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(int fd, int device);
+
+int disableAudioDevice(int fd, int device);
+
+void printAudioDevices(int fd);
+
+void readAudioDevicesState(FILE *fp);
+
+void saveAudioDevicesState(FILE *fp);
+
+void loadAudioDrivers(void);
+#endif