comparison data/fft/FFTCacheReader.h @ 537:3cc4b7cd2aa5

* Merge from one-fftdataserver-per-fftmodel branch. This bit of reworking (which is not described very accurately by the title of the branch) turns the MatrixFile object into something that either reads or writes, but not both, and separates the FFT file cache reader and writer implementations separately. This allows the FFT data server to have a single thread owning writers and one reader per "customer" thread, and for all locking to be vastly simplified and concentrated in the data server alone (because none of the classes it makes use of is used in more than one thread at a time). The result is faster and more trustworthy code.
author Chris Cannam
date Tue, 27 Jan 2009 13:25:10 +0000
parents
children a38f0db6b41d
comparison
equal deleted inserted replaced
536:beb51f558e9c 537:3cc4b7cd2aa5
1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
2
3 /*
4 Sonic Visualiser
5 An audio file viewer and annotation editor.
6 Centre for Digital Music, Queen Mary, University of London.
7 This file copyright 2006-2009 Chris Cannam and QMUL.
8
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU General Public License as
11 published by the Free Software Foundation; either version 2 of the
12 License, or (at your option) any later version. See the file
13 COPYING included with this distribution for more information.
14 */
15
16 #ifndef _FFT_CACHE_READER_H_
17 #define _FFT_CACHE_READER_H_
18
19 #include "FFTCacheStorageType.h"
20 #include <stddef.h>
21
22 class FFTCacheReader
23 {
24 public:
25 virtual size_t getWidth() const = 0;
26 virtual size_t getHeight() const = 0;
27
28 virtual float getMagnitudeAt(size_t x, size_t y) const = 0;
29 virtual float getNormalizedMagnitudeAt(size_t x, size_t y) const = 0;
30 virtual float getMaximumMagnitudeAt(size_t x) const = 0;
31 virtual float getPhaseAt(size_t x, size_t y) const = 0;
32
33 virtual void getValuesAt(size_t x, size_t y, float &real, float &imag) const = 0;
34 virtual void getMagnitudesAt(size_t x, float *values, size_t minbin, size_t count, size_t step) const = 0;
35
36 virtual bool haveSetColumnAt(size_t x) const = 0;
37
38 virtual FFTCache::StorageType getStorageType() const = 0;
39 };
40
41 #endif