61 lines
1.2 KiB
C++
61 lines
1.2 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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CrossFade.h
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(c) 2005 The Audacity Team
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Licensed under the GPL version 2.0
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**********************************************************************/
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#ifndef __AUDACITY_CROSSFADE__
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#define __AUDACITY_CROSSFADE__
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/// This defines a crossfader class that
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/// accepts a list of WaveClips and can do a mini-mixing
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/// to produce the desired crossfading
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#include "WaveClip.h"
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enum FadeType
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{
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FT_MIX,
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FT_TRIANGULAR,
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FT_EXPONENTIAL
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};
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class CrossFader
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{
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public:
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CrossFader();
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~CrossFader();
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//This sets a crossfade mode where the overlapping
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//tracks are simply mixed equally.
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void SetMixCrossFade(){mType = FT_MIX;};
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void SetTriangularCrossFade(){mType = FT_TRIANGULAR;};
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void SetExponentialCrossFade(){mType = FT_EXPONENTIAL;};
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void ClearClips();
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//Produces samples according to crossfading rules.
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bool GetSamples(samplePtr buffer, sampleFormat format,
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sampleCount start, size_t len);
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protected:
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WaveClipHolders mClips;
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private:
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bool CrossFadeMix(samplePtr buffer, sampleFormat format, sampleCount start, size_t len);
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FadeType mType;
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};
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#endif
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