Mercurial > hg > svcore
view data/model/FFTModel.h @ 242:2f7d27648806
* Fix real-time plugin corruption when getLatency is called for some plugins
* Other minor changes
author | Chris Cannam |
---|---|
date | Thu, 01 Mar 2007 15:35:27 +0000 |
parents | fb8ddd00f440 |
children | 21b9b25bff48 |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef _FFT_MODEL_H_ #define _FFT_MODEL_H_ #include "data/fft/FFTDataServer.h" #include "DenseThreeDimensionalModel.h" class FFTModel : public DenseThreeDimensionalModel { public: FFTModel(const DenseTimeValueModel *model, int channel, WindowType windowType, size_t windowSize, size_t windowIncrement, size_t fftSize, bool polar, size_t fillFromColumn = 0); ~FFTModel(); float getMagnitudeAt(size_t x, size_t y) { return m_server->getMagnitudeAt(x << m_xshift, y << m_yshift); } float getNormalizedMagnitudeAt(size_t x, size_t y) { return m_server->getNormalizedMagnitudeAt(x << m_xshift, y << m_yshift); } float getMaximumMagnitudeAt(size_t x) { return m_server->getMaximumMagnitudeAt(x << m_xshift); } float getPhaseAt(size_t x, size_t y) { return m_server->getPhaseAt(x << m_xshift, y << m_yshift); } void getValuesAt(size_t x, size_t y, float &real, float &imaginary) { m_server->getValuesAt(x << m_xshift, y << m_yshift, real, imaginary); } bool isColumnAvailable(size_t x) const { return m_server->isColumnReady(x << m_xshift); } size_t getFillExtent() const { return m_server->getFillExtent(); } // DenseThreeDimensionalModel and Model methods: // virtual size_t getWidth() const { return m_server->getWidth() >> m_xshift; } virtual size_t getHeight() const { // If there is no y-shift, the server's height (based on its // fftsize/2 + 1) is correct. If there is a shift, then the // server is using a larger fft size than we want, so we shift // it right as many times as necessary, but then we need to // re-add the "+1" part (because ((fftsize*2)/2 + 1) / 2 != // fftsize/2 + 1). return (m_server->getHeight() >> m_yshift) + (m_yshift > 0 ? 1 : 0); } virtual float getValueAt(size_t x, size_t y) const { return const_cast<FFTModel *>(this)->getMagnitudeAt(x, y); } virtual bool isOK() const { return m_server && m_server->getModel(); } virtual size_t getStartFrame() const { return 0; } virtual size_t getEndFrame() const { return getWidth() * getResolution() + getResolution(); } virtual size_t getSampleRate() const; virtual size_t getResolution() const { return m_server->getWindowIncrement() << m_xshift; } virtual size_t getYBinCount() const { return getHeight(); } virtual float getMinimumLevel() const { return 0.f; // Can't provide } virtual float getMaximumLevel() const { return 1.f; // Can't provide } virtual void getColumn(size_t x, Column &result) const; virtual QString getBinName(size_t n) const; virtual int getCompletion() const { return m_server->getFillCompletion(); } virtual Model *clone() const; virtual void suspend() { m_server->suspend(); } virtual void suspendWrites() { m_server->suspendWrites(); } virtual void resume() { m_server->resume(); } private: FFTModel(const FFTModel &); FFTModel &operator=(const FFTModel &); // not implemented FFTDataServer *m_server; int m_xshift; int m_yshift; }; #endif