ofVideoGrabber.h
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00001 #ifndef _OF_VIDEO_GRABBER 00002 #define _OF_VIDEO_GRABBER 00003 00004 #include "ofConstants.h" 00005 #include "ofTexture.h" 00006 #include "ofGraphics.h" 00007 #include "ofTypes.h" 00008 00009 #ifdef OF_VIDEO_CAPTURE_QUICKTIME 00010 #include "ofQtUtils.h" 00011 #endif 00012 00013 #ifdef OF_VIDEO_CAPTURE_DIRECTSHOW 00014 #include "videoInput.h" 00015 #endif 00016 00017 #ifdef OF_VIDEO_CAPTURE_UNICAP 00018 #include "ofUCUtils.h" 00019 #endif 00020 00021 00022 00023 // todo: 00024 // QT - callback, via SGSetDataProc - couldn't get this to work yet 00025 // image decompress options ala mung... 00026 00027 00028 class ofVideoGrabber : public ofBaseVideo{ 00029 00030 public : 00031 00032 ofVideoGrabber(); 00033 virtual ~ofVideoGrabber(); 00034 00035 int getDeviceCount(); 00036 00037 void listDevices(); 00038 bool isFrameNew(); 00039 void grabFrame(); 00040 void close(); 00041 bool initGrabber(int w, int h, bool bTexture = true); 00042 void videoSettings(); 00043 unsigned char * getPixels(); 00044 ofTexture & getTextureReference(); 00045 void setVerbose(bool bTalkToMe); 00046 void setDeviceID(int _deviceID); 00047 void setUseTexture(bool bUse); 00048 void draw(float x, float y, float w, float h); 00049 void draw(float x, float y); 00050 void update(); 00051 00052 00053 //the anchor is the point the image is drawn around. 00054 //this can be useful if you want to rotate an image around a particular point. 00055 void setAnchorPercent(float xPct, float yPct); //set the anchor as a percentage of the image width/height ( 0.0-1.0 range ) 00056 void setAnchorPoint(int x, int y); //set the anchor point in pixels 00057 void resetAnchor(); //resets the anchor to (0, 0) 00058 00059 float getHeight(); 00060 float getWidth(); 00061 00062 int height; 00063 int width; 00064 00065 protected: 00066 00067 bool bChooseDevice; 00068 int deviceID; 00069 bool bUseTexture; 00070 ofTexture tex; 00071 bool bVerbose; 00072 bool bGrabberInited; 00073 unsigned char * pixels; 00074 bool bIsFrameNew; 00075 00076 //--------------------------------- quicktime 00077 #ifdef OF_VIDEO_CAPTURE_QUICKTIME 00078 00079 00080 unsigned char * offscreenGWorldPixels; // 32 bit: argb (qt k32ARGBPixelFormat) 00081 int w,h; 00082 bool bHavePixelsChanged; 00083 GWorldPtr videogworld; 00084 SeqGrabComponent gSeqGrabber; 00085 SGChannel gVideoChannel; 00086 Rect videoRect; 00087 bool bSgInited; 00088 string deviceName; 00089 00090 bool qtInitSeqGrabber(); 00091 bool qtCloseSeqGrabber(); 00092 bool qtSelectDevice(int deviceNumber, bool didWeChooseADevice); 00093 00094 //-------------------------------------------------------------------- 00095 #ifdef TARGET_OSX 00096 //-------------------------------------------------------------------- 00097 00098 bool saveSettings(); 00099 bool loadSettings(); 00100 00101 //-------------------------------------------------------------------- 00102 #endif 00103 //-------------------------------------------------------------------- 00104 00105 00106 #endif 00107 00108 //--------------------------------- directshow 00109 #ifdef OF_VIDEO_CAPTURE_DIRECTSHOW 00110 int device; 00111 videoInput VI; 00112 00113 bool bDoWeNeedToResize; 00114 00115 #endif 00116 00117 //--------------------------------- linux unicap 00118 #ifdef OF_VIDEO_CAPTURE_UNICAP 00119 ofUCUtils ucGrabber; 00120 #endif 00121 00122 00123 //--------------------------------- linux V4L 00124 // if unicap doesn't work, we keep linux v4l in here.... 00125 // so folks can switch, in ofConstants.h 00126 #ifdef OF_VIDEO_CAPTURE_V4L 00127 int device; 00128 char dev_name[80]; 00129 bool bV4LGrabberInited; 00130 #endif 00131 00132 00133 00134 00135 }; 00136 00137 00138 00139 00140 #endif 00141
