Mercurial > hg > svcore
view data/fft/FFTCache.h @ 449:a75edaa08d28
* Support importing features from RDF whose times are intervals rather
than only instants; import them into region or note models. Sadly
this makes RDF import much, much slower, because we need to work around
Rasqal's single-OPTIONAL limitation by repeatedly querying each feature
for time and range.
* Add segmentation view to region layer, and display label texts
author | Chris Cannam |
---|---|
date | Tue, 07 Oct 2008 12:42:17 +0000 |
parents | 115f60df1e4d |
children | 6066bde1c126 |
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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_CACHE_H_ #define _FFT_CACHE_H_ #include <cstdlib> #include <cmath> #include <stdint.h> class FFTCache { public: virtual ~FFTCache() { } virtual size_t getWidth() const = 0; virtual size_t getHeight() const = 0; virtual void resize(size_t width, size_t height) = 0; virtual void reset() = 0; // zero-fill or 1-fill as appropriate without changing size virtual float getMagnitudeAt(size_t x, size_t y) const = 0; virtual float getNormalizedMagnitudeAt(size_t x, size_t y) const = 0; virtual float getMaximumMagnitudeAt(size_t x) const = 0; virtual float getPhaseAt(size_t x, size_t y) const = 0; virtual void getValuesAt(size_t x, size_t y, float &real, float &imaginary) const = 0; virtual bool haveSetColumnAt(size_t x) const = 0; // may modify argument arrays virtual void setColumnAt(size_t x, float *mags, float *phases, float factor) = 0; // may modify argument arrays virtual void setColumnAt(size_t x, float *reals, float *imags) = 0; virtual void suspend() { } enum StorageType { Compact, // 16 bits normalized polar Rectangular, // floating point real+imag Polar // floating point mag+phase }; virtual StorageType getStorageType() = 0; enum Type { MemoryCache, FileCache }; virtual Type getType() = 0; protected: FFTCache() { } }; #endif