SndAudioBufferQueue.h

//
//  $Id: SndAudioBufferQueue.h 3449 2009-04-04 16:52:47Z leighsmith $
//
//  Original Author: SKoT McDonald, <skot@tomandandy.com>
//
//  Copyright (c) 2001, The MusicKit Project.  All rights reserved.
//
//  Permission is granted to use and modify this code for commercial and 
//  non-commercial purposes so long as the author attribution and copyright 
//  messages remain intact and accompany all relevant code.
//

#ifndef __SNDAUDIOBUFFERQUEUE_H__
#define __SNDAUDIOBUFFERQUEUE_H__

#import <Foundation/Foundation.h>

#ifdef __MINGW32__
# import "SndConditionLock.h"
# define NSConditionLock SndConditionLock
#endif

@class SndAudioBuffer;

typedef enum {
  audioBufferQueue_typeInput,
  audioBufferQueue_typeOutput
} SndAudioBufferQueueType;

@interface SndAudioBufferQueue : NSObject 
{
    NSMutableArray  *pendingBuffers;
    NSMutableArray  *processedBuffers;
    NSConditionLock *pendingBuffersLock;
    NSConditionLock *processedBuffersLock;
    int              numBuffers;
}

+ audioBufferQueueWithLength: (int) n;

- init;
- (void) dealloc;
- (NSString*) description;

- initQueueWithLength: (int) n;

- (SndAudioBuffer*) popNextPendingBuffer;

- (SndAudioBuffer*) popNextProcessedBuffer;

- addPendingBuffer: (SndAudioBuffer*) audioBuffer;

- addProcessedBuffer: (SndAudioBuffer*) audioBuffer;

- (void) cancelProcessedBuffers;

- (int) pendingBuffersCount;

- (int) processedBuffersCount;

- freeBuffers;

- prepareQueueAsType: (SndAudioBufferQueueType) type withBufferPrototype: (SndAudioBuffer*) buff;

- (int) bufferCount;

@end

#endif

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