audio.h

pwlib源码库

/*
 * main.h
 *
 * PWLib application header file for sound test.
 *
 *
 * $Log: audio.h,v $
 * Revision 1.1  2005/08/18 22:29:15  dereksmithies
 * Add a full duplex sound card test (which was excised from ohphone).
 * Add copyright header and cvs log statements.
 * Fix startup and closedown segfaults.
 * Add safety mechanism so it can never fill up all computer memory.
 *
 *
 *
 *
 *
 *
 *
 *
 */
 
#ifndef _AUDIO_MAIN_H
#define _AUDIO_MAIN_H



class Audio : public PProcess
{
  PCLASSINFO(Audio, PProcess);

public:
  Audio();

  void Main();

  PString GetTestDeviceName() { return devName; }

    static Audio & Current()
        { return (Audio &)PProcess::Current(); }

 protected:
  PString devName;
};


/////////////////////////////////////////////////////////////////////////////
PDECLARE_LIST(TestAudioDevice, PBYTEArray *)
#if 0                                //This makes emacs bracket matching code happy.
{
#endif
 public:
  virtual ~TestAudioDevice();
  
  void Test();
  BOOL DoEndNow();
  
  void WriteAudioFrame(PBYTEArray *data);
  PBYTEArray *GetNextAudioFrame();
  
 protected:
  PMutex access;
  BOOL endNow;
};



class TestAudio : public PThread  
{
	PCLASSINFO(TestAudio, PThread)
public:
	TestAudio(TestAudioDevice &master);
	virtual ~TestAudio();

	virtual void Terminate() { keepGoing = FALSE; }
	void LowerVolume();
	void RaiseVolume();

protected:
	PString name;
	BOOL OpenAudio(enum PSoundChannel::Directions dir);
	
	PINDEX             currentVolume;
	TestAudioDevice    &controller;
	PSoundChannel      sound;
	BOOL               keepGoing;
};

class TestAudioRead : public TestAudio
{
    PCLASSINFO(TestAudioRead, TestAudio);
  public:
    TestAudioRead(TestAudioDevice &master);
    
    void Main();
};


class TestAudioWrite : public TestAudio
{
    PCLASSINFO(TestAudioWrite, TestAudio);
  public:
    TestAudioWrite(TestAudioDevice &master);
    
    void Main();
};




#endif  // _AUDIO_MAIN_H