annotate audio/AudioRecordTarget.h @ 562:3c846b06c518 3.0-integration

When returning the frame that we have filled to, avoid accidentally reducing the frame number (making it appear we are less filled than we really are) when we had intended to round it up to the full requested amount. Fixes some unexpected double-playback in non-looping play-selection mode.

/* -*- 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 AUDIO_RECORD_TARGET_H
#define AUDIO_RECORD_TARGET_H

#include <bqaudioio/ApplicationRecordTarget.h>

#include <string>

#include <QObject>
#include <QMutex>

#include "base/BaseTypes.h"

class ViewManagerBase;
class WritableWaveFileModel;

class AudioRecordTarget : public QObject,
			  public breakfastquay::ApplicationRecordTarget
{
    Q_OBJECT

public:
    AudioRecordTarget(ViewManagerBase *, QString clientName);
    virtual ~AudioRecordTarget();

    virtual std::string getClientName() const override { return m_clientName; }
    
    virtual int getApplicationSampleRate() const override;
    virtual int getApplicationChannelCount() const override;

    virtual void setSystemRecordBlockSize(int) override;
    virtual void setSystemRecordSampleRate(int) override;
    virtual void setSystemRecordLatency(int) override;
    virtual void setSystemRecordChannelCount(int) override;

    virtual void putSamples(const float *const *samples, int nchannels, int nframes) override;
    
    virtual void setInputLevels(float peakLeft, float peakRight) override;

    virtual void audioProcessingOverload() override { }

    QString getRecordContainerFolder();
    QString getRecordFolder();
    
    bool isRecording() const { return m_recording; }
    WritableWaveFileModel *startRecording(); // caller takes ownership
    void stopRecording();

signals:
    void recordStatusChanged(bool recording);
    void recordDurationChanged(sv_frame_t, sv_samplerate_t); // emitted occasionally
    void recordCompleted();

protected slots:
    void modelAboutToBeDeleted();
    
private:
    ViewManagerBase *m_viewManager;
    std::string m_clientName;
    bool m_recording;
    sv_samplerate_t m_recordSampleRate;
    int m_recordChannelCount;
    sv_frame_t m_frameCount;
    QString m_audioFileName;
    WritableWaveFileModel *m_model;
    QMutex m_mutex;
};

#endif