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NeXTSTEP 3.0
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NXPlayStream.h
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1992-01-30
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/*
* NXPlayStream.h
*
* Play sound data.
*
* Copyright (c) 1991, NeXT Computer, Inc. All rights reserved.
*/
#import "NXSoundStream.h"
@interface NXPlayStream:NXSoundStream
{
float _leftGain;
float _rightGain;
BOOL _isDetectingPeaks;
unsigned int _peakHistory;
int _reserved1;
}
/*
* Overridden from superclass
*/
- initOnDevice:anObject;
- (NXSoundDeviceError)activate;
/*
* Get and set stream gain.
* Default 1.0.
*/
- getGainLeft:(float *)leftAmp right:(float *)rightAmp;
- (NXSoundDeviceError)setGainLeft:(float)leftAmp right:(float)rightAmp;
/*
* Peak detection.
* Default is NO peak detection.
* Default peak history is one device buffer.
*/
- (BOOL)isDetectingPeaks;
- (NXSoundDeviceError)setDetectPeaks:(BOOL)flag;
- (unsigned int)peakHistory;
- (NXSoundDeviceError)setPeakHistory:(unsigned int)bufferCount;
- (NXSoundDeviceError)getPeakLeft:(float *)leftAmp
right:(float *)rightAmp;
/*
* Enqueue playback buffer.
* Negative tags are reserved.
* Channels must be 1 or 2.
* Sampling rate must be 44100.0 or 22050.0.
* Stream gain is scaled by bufferGain to get final
* amplitude.
*/
- (NXSoundDeviceError)playBuffer:(void *)data
size:(unsigned int)bytes
tag:(int)anInt
channelCount:(unsigned int)channels
samplingRate:(float)rate
bufferGainLeft:(float)leftAmp right:(float)rightAmp
lowWaterMark:(unsigned int)lowWater
highWaterMark:(unsigned int)highWater;
/*
* Play with unity bufferGain and default water marks. LowWaterMark
* defaults to (512*1024) and highWaterMark defaults to (768*1024).
*/
- (NXSoundDeviceError)playBuffer:(void *)data
size:(unsigned int)bytes
tag:(int)anInt
channelCount:(unsigned int)channels
samplingRate:(float)rate;
@end
/*
* Delegate interface.
*/
@interface Object(NXPlayStreamDelegate)
- soundS4Q$mDidUnderrun:sender;
@end