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// -*- c-basic-offset: 4 -*-
/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <[email protected]>,
Chris Cannam <[email protected]>,
Richard Bown <[email protected]>
The moral right of the authors to claim authorship of this work
has been asserted.
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.
*/
// Accepts an AudioFIle and turns the sample data into peak data for
// storage in a peak file or a BWF format peak chunk. Pixmaps or
// sample data is returned to callers on demand using these cached
// values.
//
//
#ifndef _PEAKFILEMANAGER_H_
#define _PEAKFILEMANAGER_H_
#include <string>
#include <iostream>
#include <fstream>
#include <vector>
#include <qobject.h>
#include "PeakFile.h"
namespace Rosegarden
{
class AudioFile;
class RealTime;
class PeakFileManager : public QObject
{
Q_OBJECT
public:
// updatePercentage tells this object how often to throw a
// percentage complete message - active between 0-100 only
// if it's set to 5 then we send an update exception every
// five percent. The percentage complete is sent with
// each exception.
//
PeakFileManager();
virtual ~PeakFileManager();
class BadPeakFileException : public Exception
{
public:
BadPeakFileException(std::string path) :
Exception("Bad peak file " + path), m_path(path) { }
BadPeakFileException(std::string path, std::string file, int line) :
Exception("Bad peak file " + path, file, line), m_path(path) { }
BadPeakFileException(const SoundFile::BadSoundFileException &e) :
Exception("Bad peak file (malformed audio?) " + e.getPath()), m_path(e.getPath()) { }
~BadPeakFileException() throw() { }
std::string getPath() const { return m_path; }
private:
std::string m_path;
};
private:
PeakFileManager(const PeakFileManager &pFM);
PeakFileManager& operator=(const PeakFileManager &);
public:
// Check that a given audio file has a valid and up to date
// peak file or peak chunk.
//
bool hasValidPeaks(AudioFile *audioFile);
// throw BadSoundFileException, BadPeakFileException
// Generate a peak file from file details - if the peak file already
// exists _and_ it's up to date then we don't do anything. For BWF
// files we generate an internal peak chunk.
//
//
void generatePeaks(AudioFile *audioFile,
unsigned short updatePercentage);
// throw BadSoundFileException, BadPeakFileException
// Get a vector of floats as the preview
//
std::vector<float> getPreview(AudioFile *audioFile,
const RealTime &startTime,
const RealTime &endTime,
int width,
bool showMinima);
// throw BadSoundFileException, BadPeakFileException
// Remove cache for a single audio file (if audio file to be deleted etc)
//
bool removeAudioFile(AudioFile *audioFile);
// Clear down
//
void clear();
// Get split points for a peak file
//
std::vector<SplitPointPair>
getSplitPoints(AudioFile *audioFile,
const RealTime &startTime,
const RealTime &endTime,
int threshold,
const RealTime &minTime);
std::vector<PeakFile*>::const_iterator begin() const
{ return m_peakFiles.begin(); }
std::vector<PeakFile*>::const_iterator end() const
{ return m_peakFiles.end(); }
// Stop a preview during its build
//
void stopPreview();
signals:
void setProgress(int);
protected:
// Add and remove from our PeakFile cache
//
bool insertAudioFile(AudioFile *audioFile);
PeakFile* getPeakFile(AudioFile *audioFile);
std::vector<PeakFile*> m_peakFiles;
unsigned short m_updatePercentage; // how often we send updates
// Whilst processing - the current PeakFile
//
PeakFile *m_currentPeakFile;
};
}
#endif // _PEAKFILEMANAGER_H_
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