videoInput函数列表

  //turns off console messages - default is to print messages  static void setVerbose(bool _verbose);    //Functions in rough order they should be used.  static int listDevices(bool silent = false);  //needs to be called after listDevices - otherwise returns NULL  static char * getDeviceName(int deviceID);    //choose to use callback based capture - or single threaded  void setUseCallback(bool useCallback);     //call before setupDevice  //directshow will try and get the closest possible framerate to what is requested  void setIdealFramerate(int deviceID, int idealFramerate);  //some devices will stop delivering frames after a while - this method gives you the option to try and reconnect  //to a device if videoInput detects that a device has stopped delivering frames.   //you MUST CALL isFrameNew every app loop for this to have any effect  void setAutoReconnectOnFreeze(int deviceNumber, bool doReconnect, int numMissedFramesBeforeReconnect);    //Choose one of these four to setup your device  bool setupDevice(int deviceID);  bool setupDevice(int deviceID, int w, int h);  //These two are only for capture cards  //USB and Firewire cameras souldn't specify connection   bool setupDevice(int deviceID, int connection);   bool setupDevice(int deviceID, int w, int h, int connection);     //If you need to you can set your NTSC/PAL/SECAM  //preference here. if it is available it will be used.  //see #defines above for available formats - eg VI_NTSC_M or VI_PAL_B  //should be called after setupDevice  //can be called multiple times  bool setFormat(int deviceNumber, int format);       //Tells you when a new frame has arrived - you should call this if you have specified setAutoReconnectOnFreeze to true  bool isFrameNew(int deviceID);     bool isDeviceSetup(int deviceID);        //Returns the pixels - flipRedAndBlue toggles RGB/BGR flipping - and you can flip the image too  unsigned char * getPixels(int deviceID, bool flipRedAndBlue = true, bool flipImage = false);    //Or pass in a buffer for getPixels to fill returns true if successful.  bool getPixels(int id, unsigned char * pixels, bool flipRedAndBlue = true, bool flipImage = false);    //Launches a pop up settings window  //For some reason in GLUT you have to call it twice each time.   void showSettingsWindow(int deviceID);    //Manual control over settings thanks.....   //These are experimental for now.  bool setVideoSettingFilter(int deviceID, long Property, long lValue, long Flags = NULL, bool useDefaultValue = false);  bool setVideoSettingFilterPct(int deviceID, long Property, float pctValue, long Flags = NULL);  bool getVideoSettingFilter(int deviceID, long Property, long &min, long &max, long &SteppingDelta, long ¤tValue, long &flags, long &defaultValue);  bool setVideoSettingCamera(int deviceID, long Property, long lValue, long Flags = NULL, bool useDefaultValue = false);  bool setVideoSettingCameraPct(int deviceID, long Property, float pctValue, long Flags = NULL);  bool getVideoSettingCamera(int deviceID, long Property, long &min, long &max, long &SteppingDelta, long ¤tValue, long &flags, long &defaultValue);  //bool setVideoSettingCam(int deviceID, long Property, long lValue, long Flags = NULL, bool useDefaultValue = false);  //get width, height and number of pixels  int  getWidth(int deviceID);  int  getHeight(int deviceID);  int  getSize(int deviceID);    //completely stops and frees a device  void stopDevice(int deviceID);    //as above but then sets it up with same settings  bool restartDevice(int deviceID);