mpd/src/audioOutput.h
J. Alexander Treuman 2814b7cfc6 Reverting to the full lsr API. Turns out the simple API needs all of the
audio at once, so it won't work for us.  The old full API code was still
heavily broken, as each call to pcm_convertSampleRate() used the same
state, even if it was processing two streams of audio.  The new code keeps
a separate state for each audio stream that's being converted.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6255 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-05-24 21:15:37 +00:00

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3.8 KiB
C

/* 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_OUTPUT_H
#define AUDIO_OUTPUT_H
#include "../config.h"
#include "pcm_utils.h"
#include "mpd_types.h"
#include "audio.h"
#include "tag.h"
#include "conf.h"
#include "utils.h"
#define DISABLED_AUDIO_OUTPUT_PLUGIN(plugin) AudioOutputPlugin plugin;
typedef struct _AudioOutput AudioOutput;
typedef int (*AudioOutputTestDefaultDeviceFunc) ();
typedef int (*AudioOutputInitDriverFunc) (AudioOutput * audioOutput,
ConfigParam * param);
typedef void (*AudioOutputFinishDriverFunc) (AudioOutput * audioOutput);
typedef int (*AudioOutputOpenDeviceFunc) (AudioOutput * audioOutput);
typedef int (*AudioOutputPlayFunc) (AudioOutput * audioOutput,
char *playChunk, int size);
typedef void (*AudioOutputDropBufferedAudioFunc) (AudioOutput * audioOutput);
typedef void (*AudioOutputCloseDeviceFunc) (AudioOutput * audioOutput);
typedef void (*AudioOutputSendMetadataFunc) (AudioOutput * audioOutput,
MpdTag * tag);
struct _AudioOutput {
int open;
char *name;
char *type;
AudioOutputFinishDriverFunc finishDriverFunc;
AudioOutputOpenDeviceFunc openDeviceFunc;
AudioOutputPlayFunc playFunc;
AudioOutputDropBufferedAudioFunc dropBufferedAudioFunc;
AudioOutputCloseDeviceFunc closeDeviceFunc;
AudioOutputSendMetadataFunc sendMetdataFunc;
int convertAudioFormat;
AudioFormat inAudioFormat;
AudioFormat outAudioFormat;
AudioFormat reqAudioFormat;
ConvState convState;
char *convBuffer;
int convBufferLen;
int sameInAndOutFormats;
void *data;
};
typedef struct _AudioOutputPlugin {
char *name;
AudioOutputTestDefaultDeviceFunc testDefaultDeviceFunc;
AudioOutputInitDriverFunc initDriverFunc;
AudioOutputFinishDriverFunc finishDriverFunc;
AudioOutputOpenDeviceFunc openDeviceFunc;
AudioOutputPlayFunc playFunc;
AudioOutputDropBufferedAudioFunc dropBufferedAudioFunc;
AudioOutputCloseDeviceFunc closeDeviceFunc;
AudioOutputSendMetadataFunc sendMetdataFunc;
} AudioOutputPlugin;
void initAudioOutputPlugins(void);
void finishAudioOutputPlugins(void);
void loadAudioOutputPlugin(AudioOutputPlugin * audioOutputPlugin);
void unloadAudioOutputPlugin(AudioOutputPlugin * audioOutputPlugin);
int initAudioOutput(AudioOutput *, ConfigParam * param);
int openAudioOutput(AudioOutput * audioOutput, AudioFormat * audioFormat);
int playAudioOutput(AudioOutput * audioOutput, char *playChunk, int size);
void dropBufferedAudioOutput(AudioOutput * audioOutput);
void closeAudioOutput(AudioOutput * audioOutput);
void finishAudioOutput(AudioOutput * audioOutput);
int keepAudioOutputAlive(AudioOutput * audioOutput, int ms);
void sendMetadataToAudioOutput(AudioOutput * audioOutput, MpdTag * tag);
void printAllOutputPluginTypes(FILE * fp);
extern AudioOutputPlugin alsaPlugin;
extern AudioOutputPlugin aoPlugin;
extern AudioOutputPlugin ossPlugin;
extern AudioOutputPlugin osxPlugin;
extern AudioOutputPlugin pulsePlugin;
extern AudioOutputPlugin mvpPlugin;
extern AudioOutputPlugin shoutPlugin;
extern AudioOutputPlugin jackPlugin;
#endif