examples/example6/SoundPlayer.h

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#ifndef FCAM_BEEPER_H
#define FCAM_BEEPER_H

#include <FCam/FCam.h>
#include <FCam/Action.h>
#include <FCam/Device.h>

// PulseAudio headers
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <pulse/simple.h>
#include <pulse/error.h>
#include <pulse/gccmacro.h>

#define BUFSIZE 1024

/*
 * A synchronized beeper example. As a device,
 * it inherits from FCam::Device, and declares
 * nested classes that inherit from CopyableAction
 */
class SoundPlayer : public FCam::Device {

 public:

  SoundPlayer();
  ~SoundPlayer();

  /*
   * An action representing the playback of a .WAV file.
   */
  class SoundAction : public FCam::CopyableAction<SoundAction> {
  public:

    /* Constructors and destructor */
    ~SoundAction();
    SoundAction(SoundPlayer * b);
    SoundAction(SoundPlayer * b, int time);
    SoundAction(const SoundAction &);

    /* Implementation of doAction() as required */
    void doAction();
    
    /* Load the specified file into buffer and prepares playback */
    void setWavFile(const char * filename);

    /* Return the underlying device */
    SoundPlayer * getPlayer() const { return player; }

  protected:

    SoundPlayer * player;
    unsigned int *refCount;
    unsigned char * buffer; // reference-counted dump of wave file.
    int size;
  };

  /*
   * Metadata attached by the device.
   */
  class Tags : public Device::Tags {
  public:
    ~Tags();
  };

  /* Implemention of tagFrame() as required */
  void tagFrame(FCam::Frame *f);

  /* Play a buffer */
  void playBuffer(unsigned char * buffer, size_t size);

  /* Returns latency in microseconds */
  int getLatency();

 protected:
  pa_simple * connection;

};

#endif

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