Mercurial > hg > svcore
view data/model/Dense3DModelPeakCache.h @ 1810:ee3b248bda25
Forward getIndexForEvent
author | Chris Cannam |
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date | Fri, 22 Nov 2019 14:12:16 +0000 |
parents | 59d9dcfd67c2 |
children | c546429d4c2f |
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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 2009 QMUL. 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_3D_MODEL_PEAK_CACHE_H #define DENSE_3D_MODEL_PEAK_CACHE_H #include "DenseThreeDimensionalModel.h" #include "EditableDenseThreeDimensionalModel.h" /** * A DenseThreeDimensionalModel that represents a reduction in the * time dimension of another DenseThreeDimensionalModel. Each column * contains the peak values from a number of consecutive columns in * the source. Each column is populated from the source model when * first requested, and is returned from cache on subsequent requests. * * Dense3DModelPeakCache is not thread-safe. */ class Dense3DModelPeakCache : public DenseThreeDimensionalModel { Q_OBJECT public: Dense3DModelPeakCache(ModelId source, // a DenseThreeDimensionalModel int columnsPerPeak); ~Dense3DModelPeakCache(); bool isOK() const override { auto source = ModelById::get(m_source); return source && source->isOK(); } sv_samplerate_t getSampleRate() const override { auto source = ModelById::get(m_source); return source ? source->getSampleRate() : 0; } sv_frame_t getStartFrame() const override { auto source = ModelById::get(m_source); return source ? source->getStartFrame() : 0; } sv_frame_t getTrueEndFrame() const override { auto source = ModelById::get(m_source); return source ? source->getTrueEndFrame() : 0; } int getResolution() const override { auto source = ModelById::getAs<DenseThreeDimensionalModel>(m_source); return source ? source->getResolution() * m_columnsPerPeak : 1; } virtual int getColumnsPerPeak() const { return m_columnsPerPeak; } int getWidth() const override { auto source = ModelById::getAs<DenseThreeDimensionalModel>(m_source); if (!source) return 0; int sourceWidth = source->getWidth(); if ((sourceWidth % m_columnsPerPeak) == 0) { return sourceWidth / m_columnsPerPeak; } else { return sourceWidth / m_columnsPerPeak + 1; } } int getHeight() const override { auto source = ModelById::getAs<DenseThreeDimensionalModel>(m_source); return source ? source->getHeight() : 0; } float getMinimumLevel() const override { auto source = ModelById::getAs<DenseThreeDimensionalModel>(m_source); return source ? source->getMinimumLevel() : 0.f; } float getMaximumLevel() const override { auto source = ModelById::getAs<DenseThreeDimensionalModel>(m_source); return source ? source->getMaximumLevel() : 1.f; } /** * Retrieve the peaks column at peak-cache column number col. This * will consist of the peak values in the underlying model from * columns (col * getColumnsPerPeak()) to ((col+1) * * getColumnsPerPeak() - 1) inclusive. */ Column getColumn(int col) const override; float getValueAt(int col, int n) const override; QString getBinName(int n) const override { auto source = ModelById::getAs<DenseThreeDimensionalModel>(m_source); return source ? source->getBinName(n) : ""; } bool shouldUseLogValueScale() const override { auto source = ModelById::getAs<DenseThreeDimensionalModel>(m_source); return source ? source->shouldUseLogValueScale() : false; } QString getTypeName() const override { return tr("Dense 3-D Peak Cache"); } int getCompletion() const override { auto source = ModelById::get(m_source); return source ? source->getCompletion() : 100; } QString toDelimitedDataString(QString, DataExportOptions, sv_frame_t, sv_frame_t) const override { return ""; } protected slots: void sourceModelChanged(ModelId); private: ModelId m_source; int m_columnsPerPeak; mutable std::vector<std::vector<float>> m_cache; mutable std::vector<bool> m_coverage; // bool for space efficiency // (vector of bool is a bitmap) mutable bool m_finalColumnIncomplete; bool haveColumn(int column) const; void fillColumn(int column) const; }; #endif