src/engine/channels/enginemicrophone.h


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#pragma once

#include <QScopedPointer>

#include "control/controlproxy.h"
#include "control/controlpushbutton.h"
#include "engine/channels/enginechannel.h"
#include "engine/enginevumeter.h"
#include "util/circularbuffer.h"

#include "soundio/soundmanagerutil.h"

class EngineEffectsManager;
class ControlAudioTaperPot;

// EngineMicrophone is an EngineChannel that implements a mixing source whose
// samples are fed directly from the SoundManager
class EngineMicrophone : public EngineChannel, public AudioDestination {
    Q_OBJECT
  public:
    EngineMicrophone(const ChannelHandleAndGroup& handle_group,
                     EffectsManager* pEffectsManager);
    virtual ~EngineMicrophone();

    bool isActive();

    // Called by EngineMaster whenever is requesting a new buffer of audio.
    virtual void process(CSAMPLE* pOutput, const int iBufferSize);
    virtual void collectFeatures(GroupFeatureState* pGroupFeatures) const;
    virtual void postProcess(const int iBufferSize) { Q_UNUSED(iBufferSize) }

    // This is called by SoundManager whenever there are new samples from the
    // configured input to be processed. This is run in the callback thread of
    // the soundcard this AudioDestination was registered for! Beware, in the
    // case of multiple soundcards, this method is not re-entrant but it may be
    // concurrent with EngineMaster processing.
    virtual void receiveBuffer(const AudioInput& input,
            const CSAMPLE* pBuffer,
            unsigned int iNumSamples);

    // Called by SoundManager whenever the microphone input is connected to a
    // soundcard input.
    virtual void onInputConfigured(const AudioInput& input);

    // Called by SoundManager whenever the microphone input is disconnected from
    // a soundcard input.
    virtual void onInputUnconfigured(const AudioInput& input);

    bool isSolo();
    double getSoloDamping();

  private:
    QScopedPointer<ControlObject> m_pInputConfigured;
    ControlAudioTaperPot* m_pPregain;

    bool m_wasActive;
};