Mercurial > hg > svcore
view data/model/DenseTimeValueModel.h @ 409:6075c90744d4
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author | Chris Cannam |
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date | Fri, 09 May 2008 12:39:02 +0000 |
parents | 5858cc462d0a |
children | 33fca917c800 |
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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 _DENSE_TIME_VALUE_MODEL_H_ #define _DENSE_TIME_VALUE_MODEL_H_ #include <QObject> #include "Model.h" /** * Base class for models containing dense two-dimensional data (value * against time). For example, audio waveform data. */ class DenseTimeValueModel : public Model { Q_OBJECT public: DenseTimeValueModel(); virtual ~DenseTimeValueModel(); /** * Return the minimum possible value found in this model type. * (That is, the minimum that would be valid, not the minimum * actually found in a particular model). */ virtual float getValueMinimum() const = 0; /** * Return the minimum possible value found in this model type. * (That is, the minimum that would be valid, not the minimum * actually found in a particular model). */ virtual float getValueMaximum() const = 0; /** * Return the number of distinct channels for this model. */ virtual size_t getChannelCount() const = 0; /** * Get the specified set of samples from the given channel of the * model in single-precision floating-point format. Return the * number of samples actually retrieved. * If the channel is given as -1, mix all available channels and * return the result. */ virtual size_t getData(int channel, size_t start, size_t count, float *buffer) const = 0; /** * Get the specified set of samples from the given channel of the * model in double-precision floating-point format. Return the * number of samples actually retrieved. * If the channel is given as -1, mix all available channels and * return the result. */ virtual size_t getData(int channel, size_t start, size_t count, double *buffer) const = 0; /** * Get the specified set of samples from given contiguous range * of channels of the model in single-precision floating-point * format. Return the number of sample frames actually retrieved. */ virtual size_t getData(size_t fromchannel, size_t tochannel, size_t start, size_t count, float **buffers) const = 0; virtual bool canPlay() const { return true; } virtual QString getDefaultPlayPluginId() const { return ""; } virtual QString getDefaultPlayPluginConfiguration() const { return ""; } QString getTypeName() const { return tr("Dense Time-Value"); } }; #endif