diff layer/Colour3DPlotExporter.h @ 1566:1f80a514ce29

Merge from branch spectrogram-export

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layer/Colour3DPlotExporter.h	Fri Jan 10 14:54:27 2020 +0000
@@ -0,0 +1,139 @@
+/* -*- 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 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 COLOUR_3D_PLOT_EXPORTER_H
+#define COLOUR_3D_PLOT_EXPORTER_H
+
+#include "Colour3DPlotRenderer.h"
+
+class Colour3DPlotExporter : public Model
+{
+    Q_OBJECT
+    
+public:
+    struct Sources {
+        // These must all outlive this class, or else discardSources()
+        // must be called
+        const VerticalBinLayer *verticalBinLayer; // always
+        ModelId source; // always; a DenseThreeDimensionalModel
+        ModelId fft; // optionally; an FFTModel; used for phase/peak-freq modes
+        const LayerGeometryProvider *provider; // optionally
+    };
+
+    enum class TimestampFormat {
+        None,
+        Seconds,
+        Frames
+    };
+
+    struct Parameters {
+        Parameters() :
+            binDisplay(BinDisplay::AllBins),
+            scaleFactor(1.0),
+            threshold(0.0),
+            gain(1.0),
+            normalization(ColumnNormalization::None),
+            timestampFormat(TimestampFormat::None) { }
+
+        /** Selection of bins to include in the export. */
+        BinDisplay binDisplay;
+
+        /** Initial scale factor (e.g. for FFT scaling). This factor
+         *  is actually applied to exported values, in contrast to the
+         *  gain value below based on the ColourScale parameter. */
+        double scaleFactor;
+
+        /** Threshold below which every value is mapped to background
+         *  pixel 0 in the display, matching the ColourScale object
+         *  parameters. This is used for thresholding in
+         *  peak-frequency output only. */
+        double threshold;
+
+        /** Gain that is applied before thresholding, in the display,
+         *  matching the ColourScale object parameters. This is used
+         *  only to determined the thresholding level. The exported
+         *  values have the scaleFactor applied, but not this gain. */
+        double gain;
+
+        /** Type of column normalization. Again, this is only used to
+         *  calculate thresholding level. The exported values are
+         *  un-normalized. */
+        ColumnNormalization normalization;
+
+        /** Format to use for the timestamp column. If None, no
+         *  timestamp column will be included. */
+        TimestampFormat timestampFormat;
+    };
+    
+    Colour3DPlotExporter(Sources sources, Parameters parameters);
+    ~Colour3DPlotExporter();
+
+    void discardSources();
+    
+    QString getDelimitedDataHeaderLine(QString, DataExportOptions) const override;
+    
+    QString toDelimitedDataString(QString, DataExportOptions,
+                                  sv_frame_t, sv_frame_t) const override;
+
+    
+    // Further Model methods that we just delegate
+
+    bool isOK() const override {
+        if (auto model = ModelById::get(m_sources.source)) {
+            return model->isOK();
+        }
+        return false;
+    }
+        
+    sv_frame_t getStartFrame() const override { 
+        if (auto model = ModelById::get(m_sources.source)) {
+            return model->getStartFrame();
+        }
+        return 0;
+    }
+    
+    sv_frame_t getTrueEndFrame() const override { 
+        if (auto model = ModelById::get(m_sources.source)) {
+            return model->getTrueEndFrame();
+        }
+        return 0;
+    }
+    
+    sv_samplerate_t getSampleRate() const override { 
+        if (auto model = ModelById::get(m_sources.source)) {
+            return model->getSampleRate();
+        }
+        return 0;
+    }
+
+    QString getTypeName() const override {
+        if (auto model = ModelById::get(m_sources.source)) {
+            return model->getTypeName();
+        }
+        return "(exporter)"; // internal fallback, no translation needed
+    }
+
+    int getCompletion() const override {
+        if (auto model = ModelById::get(m_sources.source)) {
+            return model->getCompletion();
+        }
+        return 0;
+    }
+    
+private:
+    Sources m_sources;
+    Parameters m_params;
+};
+
+#endif