annotate audioio/AudioPortAudioTarget.h @ 12:29b38a641d43

* Implement play mute, level and pan controls and a layer visibility control
* Handle swapping the buffers in AudioCallbackPlaySource more gracefully, so
  that in many cases it can be done inaudibly.  Still gets it wrong when
  playing in a noncontiguous selection.
* Fix to SV file save for non-2d sparse models
* Fixes to LED button drawing and AudioDial mouse functionality
* Add progress bar for Ogg file import
* Reshuffle PropertyContainer and its subclasses so it can be a QObject
* Add layer dormancy (invisible layer permitted to free its cache space)
* Optimisations to SpectrogramLayer, removing locks when reading/writing
  individual pixels in the cache (should be unnecessary there) -- there's
  still an issue here as we need a lock when reading from the model in
  case the model is replaced, and we don't currently have one
* Several munlock() calls to make it harder to exhaust real memory if
  running in an RT mode with mlockall() active

/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */

/*
    A waveform viewer and audio annotation editor.
    Chris Cannam, Queen Mary University of London, 2005-2006
    
    This is experimental software.  Not for distribution.
*/

#ifndef _AUDIO_PORT_AUDIO_TARGET_H_
#define _AUDIO_PORT_AUDIO_TARGET_H_

#ifdef HAVE_PORTAUDIO

#include <portaudio.h>
#include <vector>

#include "AudioCallbackPlayTarget.h"

class AudioCallbackPlaySource;

class AudioPortAudioTarget : public AudioCallbackPlayTarget
{
    Q_OBJECT

public:
    AudioPortAudioTarget(AudioCallbackPlaySource *source);
    virtual ~AudioPortAudioTarget();

    virtual bool isOK() const;

public slots:
    virtual void sourceModelReplaced();

protected:
    int process(void *input, void *output, unsigned long frames,
		PaTimestamp outTime);

    static int processStatic(void *, void *, unsigned long,
			     PaTimestamp, void *);

    PortAudioStream *m_stream;

    int m_bufferSize;
    int m_sampleRate;
    int m_latency;
};

#endif /* HAVE_PORTAUDIO */

#endif