src/noarch/Scaler.h (4a1b01f) - Blinker · BlinkenArea

Scaler.h

/* Blinker
   Copyright 2011 Stefan Schuermans <stefan@blinkenarea.org>
   Copyleft GNU public license - http://www.gnu.org/copyleft/gpl.html
   a blinkenarea.org project */

#ifndef SCALER_H
#define SCALER_H

#include <string>

#include <BlinkenLib/BlinkenFrame.h>

#include "CallMgr.h"
#include "Directory.h"
#include "File.h"
#include "Module.h"
#include "SettingFile.h"
#include "Size.h"
#include "StreamMgr.h"
#include "StreamRecv.h"

namespace Blinker {

/// a stream scaler
class Scaler: public Module, public StreamRecv
{
public:
  /**
   * @brief constructor
   * @param[in] callMgr callback manager
   * @param[in] streamMgr stream manager
   * @param[in] dirBase base directory
   */
  Scaler(CallMgr &callMgr, StreamMgr &streamMgr, const Directory &dirBase);

/// virtual destructor
  virtual ~Scaler();

private:
  /// copy constructor disabled
  Scaler(const Scaler &that);

/// assignment operator disabled
  const Scaler & operator=(const Scaler &that);

public:
  /// check for update of configuration
  virtual void updateConfig();

/**
   * @brief set current frame
   * @param[in] stream stream name
   * @param[in] pFrame current frame
   */
  virtual void setFrame(const std::string &stream, stBlinkenFrame *pFrame);

/**
   * @brief set current frame to none
   * @param[in] stream stream name
   */
  virtual void setNoFrame(const std::string &stream);

protected:
  /// get input stream and attach to it
  void getInStream();

/// detach from input stream and release it
  void releaseInStream();

/// (re-)get size to scale to
  void getSize();

/// get output stream
  void getOutStream();

/// release output stream
  void releaseOutStream();

/// send current frame to output stream
  void sendFrame();

/**
   * @brief process frame
   * @param[in] pFrame frame to process
   */
  void procFrame(stBlinkenFrame *pFrame);

/// process "no frame"
  void procNoFrame();

protected:
  SettingFile m_fileInStream;  ///< input stream name file
  SettingFile m_fileSize;      ///< size file
  SettingFile m_fileOutStream; ///< output stream name file
  std::string m_nameInStream;  ///< name of input stream
  Stream      *m_pInStream;    ///< input stream
  bool        m_haveSize;      ///< if the size to scale to is available
  Size        m_size;          ///< size to scale to
  std::string m_nameOutStream; ///< name of output stream
  Stream      *m_pOutStream;   ///< output stream
}; // class Scaler

} // namespace Blinker

#endif // #ifndef SCALER_H

Blinker

implemented scaler module