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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 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 _WRITABLE_WAVE_FILE_MODEL_H_
#define _WRITABLE_WAVE_FILE_MODEL_H_
#include "WaveFileModel.h"
class WavFileWriter;
class WavFileReader;
class WritableWaveFileModel : public RangeSummarisableTimeValueModel
{
Q_OBJECT
public:
WritableWaveFileModel(sv_samplerate_t sampleRate, int channels, QString path = "");
~WritableWaveFileModel();
/**
* Call addSamples to append a block of samples to the end of the
* file. Caller should also call setCompletion to update the
* progress of this file, if it has a known end point, and should
* call setCompletion(100) when the file has been written.
*/
virtual bool addSamples(float **samples, sv_frame_t count);
bool isOK() const;
bool isReady(int *) const;
virtual void setCompletion(int completion); // percentage
virtual int getCompletion() const { return m_completion; }
const ZoomConstraint *getZoomConstraint() const {
static PowerOfSqrtTwoZoomConstraint zc;
return &zc;
}
sv_frame_t getFrameCount() const;
int getChannelCount() const { return m_channels; }
sv_samplerate_t getSampleRate() const { return m_sampleRate; }
float getValueMinimum() const { return -1.0f; }
float getValueMaximum() const { return 1.0f; }
virtual sv_frame_t getStartFrame() const { return m_startFrame; }
virtual sv_frame_t getEndFrame() const { return m_startFrame + getFrameCount(); }
void setStartFrame(sv_frame_t startFrame);
virtual sv_frame_t getData(int channel, sv_frame_t start, sv_frame_t count,
float *buffer) const;
virtual sv_frame_t getMultiChannelData(int fromchannel, int tochannel,
sv_frame_t start, sv_frame_t count,
float **buffer) const;
virtual int getSummaryBlockSize(int desired) const;
virtual void getSummaries(int channel, sv_frame_t start, sv_frame_t count,
RangeBlock &ranges, int &blockSize) const;
virtual Range getSummary(int channel, sv_frame_t start, sv_frame_t count) const;
QString getTypeName() const { return tr("Writable Wave File"); }
virtual void toXml(QTextStream &out,
QString indent = "",
QString extraAttributes = "") const;
protected:
WaveFileModel *m_model;
WavFileWriter *m_writer;
WavFileReader *m_reader;
sv_samplerate_t m_sampleRate;
int m_channels;
sv_frame_t m_frameCount;
sv_frame_t m_startFrame;
int m_completion;
};
#endif
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