SndStreamClient.h

//
//  $Id: SndStreamClient.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 __SNDSTREAMCLIENT__
#define __SNDSTREAMCLIENT__

#import <Foundation/Foundation.h>

enum {
    OB_notInit,
    OB_isInit
};

@class SndAudioBuffer; 
@class SndAudioBufferQueue;
@class SndStreamManager;
@class SndAudioProcessorChain;

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

// SndStreamClientDelegate

@protocol SndStreamClientDelegate

- inputBufferSkipped: (id) sender;

- outputBufferSkipped: (id) sender;

- didProcessStreamBuffer: (id) sender;

@end

// SndStreamClient

@interface SndStreamClient : NSObject
{
    SndAudioBuffer  *exposedOutputBuffer;
    SndAudioBuffer  *synthOutputBuffer;
    SndAudioBuffer  *synthInputBuffer;
    SndAudioBufferQueue *outputQueue;
    SndAudioBufferQueue *inputQueue;
    
    NSConditionLock *synthThreadLock;
    NSConditionLock *outputBufferLock;

    BOOL       active;
    BOOL       needsInput;
    BOOL       generatesOutput;
    SndAudioProcessorChain *processorChain;
    SndStreamManager *manager;
    id         delegate;    
    double     clientNowTime;
    double     lastManagerTime;
    
    NSString  *clientName;
    
@private
    BOOL       delegateRespondsToOutputBufferSkipSelector;
    BOOL       delegateRespondsToInputBufferSkipSelector;
    BOOL       delegateRespondsToDidProcessBufferSelector;
    BOOL       bDisconnect;
}

+ streamClient;

- freeBufferMem;

- (NSString *) description;

- welcomeClientWithBuffer: (SndAudioBuffer *) buff manager: (SndStreamManager *) m;

- startProcessingNextBufferWithInput: (SndAudioBuffer *) inB nowTime: (double) t;

- (double) preemptQueuedStream;
 
- (void) processingThread;

- (SndAudioBuffer *) outputBuffer;

- (SndAudioBuffer *) synthOutputBuffer;

- (SndAudioBuffer *) synthInputBuffer;

- managerIsShuttingDown;

- (void) processBuffers; 

- (double) synthesisTime;

- (void) resetTime: (double) originTimeInSeconds;

- (double) streamTime;

- (BOOL) isActive;

- setDetectPeaks: (BOOL) detectPeaks;

- getPeakLeft: (float *) leftPeak right: (float *) rightPeak;

- (BOOL) generatesOutput;

- (BOOL) needsInput;

- setGeneratesOutput: (BOOL) b;

- setNeedsInput: (BOOL) b;

- setManager: (SndStreamManager *) m;

- lockOutputBuffer;

- unlockOutputBuffer;

- prepareToStreamWithBuffer: (SndAudioBuffer *) buff;

- didFinishStreaming;

- (SndAudioProcessorChain *) audioProcessorChain;

- (void) setAudioProcessorChain: (SndAudioProcessorChain *) newAudioProcessorChain;

- (void) setDelegate: (id) d;

- (id) delegate;

- (int) inputBufferCount;

- (int) outputBufferCount;

- (BOOL) setInputBufferCount: (int) n;

- (BOOL) setOutputBufferCount: (int) n;

- (double) outputLatencyInSeconds;

- (long) outputLatencyInSamples;

- (NSString *) clientName;

- setClientName: (NSString *) name;

- offlineProcessBuffer: (SndAudioBuffer *) anAudioBuffer nowTime: (double) t;

@end


#endif

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