DeviceSource.hh

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FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
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// "liveMedia"
// Copyright (c) 1996-2022 Live Networks, Inc.  All rights reserved.
// A template for a MediaSource encapsulating an audio/video input device
// 
// NOTE: Sections of this code labeled "%%% TO BE WRITTEN %%%" are incomplete, and needto be written by the programmer
// (depending on the features of the particulardevice).
// C++ header
 
#ifndef _DEVICE_SOURCE_HH
#define _DEVICE_SOURCE_HH
 
#ifndef _FRAMED_SOURCE_HH
#include "FramedSource.hh"
#endif
 
// The following class can be used to define specific encoder parameters
class DeviceParameters {
  //%%% TO BE WRITTEN %%%
};
 
class DeviceSource: public FramedSource {
public:
  static DeviceSource* createNew(UsageEnvironment& env,
                                 DeviceParameters params);
 
public:
  static EventTriggerId eventTriggerId;
  // Note that this is defined here to be a static class variable, because this code is intended to illustrate how to
  // encapsulate a *single* device - not a set of devices.
  // You can, however, redefine this to be a non-static member variable.
 
protected:
  DeviceSource(UsageEnvironment& env, DeviceParameters params);
  // called only by createNew(), or by subclass constructors
  virtual ~DeviceSource();
 
private:
  // redefined virtual functions:
  virtual void doGetNextFrame();
  //virtual void doStopGettingFrames(); // optional
 
private:
  static void deliverFrame0(void* clientData);
  void deliverFrame();
 
private:
  static unsigned referenceCount; // used to count how many instances of this class currently exist
  DeviceParameters fParams;
};
 
#endif