1 files changed, 77 insertions, 0 deletions
diff --git a/akode/lib/resampler.h b/akode/lib/resampler.h
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+/*  aKode: Resampler abstract-type
+
+    Copyright (C) 2004 Allan Sandfeld Jensen <kde@carewolf.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef _AKODE_RESAMPLER_H
+#define _AKODE_RESAMPLER_H
+
+#include <string>
+
+#include "pluginhandler.h"
+#include "akode_export.h"
+
+namespace aKode {
+
+using std::string;
+class AudioFrame;
+
+//! A generic interface for all resamplers
+
+/*!
+ * Resamplers are used to change the samplerate of sample
+ */
+class AKODE_EXPORT Resampler {
+public:
+    virtual ~Resampler() {};
+    /*!
+     * Returns true if convertion was succesfull.
+     */
+    virtual bool doFrame(AudioFrame *in, AudioFrame *out) = 0;
+    /*!
+     * Sets the output sample-rate to \a value.
+     */
+    virtual void setSampleRate(unsigned int rate) = 0;
+    /*!
+     * Sets the resample speed to \a value.
+     */
+    virtual void setSpeed(float value) = 0;
+};
+
+class ResamplerPlugin {
+public:
+    virtual Resampler* openResampler() = 0;
+};
+
+class AKODE_EXPORT ResamplerPluginHandler : public PluginHandler, public ResamplerPlugin {
+public:
+    ResamplerPluginHandler() : resampler_plugin(0) {};
+    ResamplerPluginHandler(const string name);
+    Resampler* openResampler();
+    /*!
+     * Loads a resampler-plugin by the \a name (src, fast..)
+     */
+    virtual bool load(const string name);
+    bool isLoaded() { return resampler_plugin != 0; };
+protected:
+    ResamplerPlugin* resampler_plugin;
+};
+
+} // namespace
+
+#endif