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78 lines
2.1 KiB
78 lines
2.1 KiB
/* aKode: Resampler abstract-type
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Copyright (C) 2004 Allan Sandfeld Jensen <kde@carewolf.com>
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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 Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef _AKODE_RESAMPLER_H
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#define _AKODE_RESAMPLER_H
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#include <string>
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#include "pluginhandler.h"
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#include "akode_export.h"
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namespace aKode {
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using std::string;
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class AudioFrame;
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//! A generic interface for all resamplers
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/*!
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* Resamplers are used to change the samplerate of sample
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*/
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class AKODE_EXPORT Resampler {
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public:
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virtual ~Resampler() {};
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/*!
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* Returns true if convertion was succesfull.
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*/
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virtual bool doFrame(AudioFrame *in, AudioFrame *out) = 0;
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/*!
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* Sets the output sample-rate to \a value.
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*/
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virtual void setSampleRate(unsigned int rate) = 0;
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/*!
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* Sets the resample speed to \a value.
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*/
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virtual void setSpeed(float value) = 0;
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};
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class ResamplerPlugin {
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public:
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virtual Resampler* openResampler() = 0;
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};
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class AKODE_EXPORT ResamplerPluginHandler : public PluginHandler, public ResamplerPlugin {
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public:
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ResamplerPluginHandler() : resampler_plugin(0) {};
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ResamplerPluginHandler(const string name);
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Resampler* openResampler();
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/*!
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* Loads a resampler-plugin by the \a name (src, fast..)
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*/
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virtual bool load(const string name);
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bool isLoaded() { return resampler_plugin != 0; };
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protected:
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ResamplerPlugin* resampler_plugin;
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};
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} // namespace
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#endif
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