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98 lines
2.9 KiB
98 lines
2.9 KiB
//////////////////////////////////////////////////////////////////////////////// |
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/// |
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/// Linear interpolation routine. |
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/// |
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/// Author : Copyright (c) Olli Parviainen |
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/// Author e-mail : oparviai 'at' iki.fi |
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/// SoundTouch WWW: http://www.surina.net/soundtouch |
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/// |
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//////////////////////////////////////////////////////////////////////////////// |
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// |
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// License : |
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// |
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// SoundTouch audio processing library |
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// Copyright (c) Olli Parviainen |
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// |
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// This library is free software; you can redistribute it and/or |
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// modify it under the terms of the GNU Lesser General Public |
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// License as published by the Free Software Foundation; either |
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// version 2.1 of the License, or (at your option) any later version. |
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// |
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// This library is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// Lesser General Public License for more details. |
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// |
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// You should have received a copy of the GNU Lesser General Public |
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// License along with this library; if not, write to the Free Software |
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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// |
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//////////////////////////////////////////////////////////////////////////////// |
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#ifndef _InterpolateLinear_H_ |
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#define _InterpolateLinear_H_ |
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#include "RateTransposer.h" |
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#include "STTypes.h" |
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namespace soundtouch |
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{ |
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/// Linear transposer class that uses integer arithmetic |
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class InterpolateLinearInteger final : public TransposerBase |
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{ |
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protected: |
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int iFract; |
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int iRate; |
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virtual int transposeMono(SAMPLETYPE *dest, |
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const SAMPLETYPE *src, |
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int &srcSamples) override; |
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virtual int transposeStereo(SAMPLETYPE *dest, |
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const SAMPLETYPE *src, |
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int &srcSamples) override; |
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virtual int transposeMulti(SAMPLETYPE *dest, const SAMPLETYPE *src, int &srcSamples) override; |
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public: |
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InterpolateLinearInteger(); |
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/// Sets new target rate. Normal rate = 1.0, smaller values represent slower |
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/// rate, larger faster rates. |
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virtual void setRate(double newRate) override; |
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virtual void resetRegisters() override; |
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virtual int getLatency() const override |
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{ |
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return 0; |
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} |
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}; |
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/// Linear transposer class that uses floating point arithmetic |
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class InterpolateLinearFloat final : public TransposerBase |
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{ |
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protected: |
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double fract; |
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virtual int transposeMono(SAMPLETYPE *dest, |
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const SAMPLETYPE *src, |
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int &srcSamples); |
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virtual int transposeStereo(SAMPLETYPE *dest, |
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const SAMPLETYPE *src, |
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int &srcSamples); |
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virtual int transposeMulti(SAMPLETYPE *dest, const SAMPLETYPE *src, int &srcSamples); |
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public: |
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InterpolateLinearFloat(); |
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virtual void resetRegisters(); |
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int getLatency() const |
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{ |
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return 0; |
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} |
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}; |
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} |
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#endif
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