mirror of
https://github.com/azahar-emu/soundtouch
synced 2025-11-06 23:20:03 +01:00
6533514372
Improve soundtouch.clear() so that it really clears all TDStretch & RateTransposer state variables. Before this clear() left last processed sample or fractional position state uncleared, which caused slightly different result if same stream was processed again after clear().
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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///
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/// Sample interpolation routine using 8-tap band-limited Shannon interpolation
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/// with kaiser window.
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///
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/// Notice. This algorithm is remarkably much heavier than linear or cubic
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/// interpolation, and not remarkably better than cubic algorithm. Thus mostly
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/// for experimental purposes
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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 _InterpolateShannon_H_
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#define _InterpolateShannon_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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class InterpolateShannon : public TransposerBase
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{
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protected:
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int transposeMono(SAMPLETYPE *dest,
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const SAMPLETYPE *src,
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int &srcSamples);
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int transposeStereo(SAMPLETYPE *dest,
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const SAMPLETYPE *src,
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int &srcSamples);
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int transposeMulti(SAMPLETYPE *dest,
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const SAMPLETYPE *src,
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int &srcSamples);
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double fract;
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public:
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InterpolateShannon();
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void resetRegisters();
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int getLatency() const
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{
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return 3;
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}
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};
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}
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#endif
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