testing n-Bed with a Logitech C270 camera
Fork of USBHostC270_example by
USBHostC270.h
00001 #include "USBHostConf.h" 00002 #include "USBHost.h" 00003 #include "BaseUvc.h" 00004 #include "decodeMJPEG.h" 00005 00006 // Logitech C270 00007 #define C270_VID 0x046d 00008 #define C270_PID 0x0825 00009 #define C270_160x120 2 00010 #define C270_176x144 3 00011 #define C270_320x176 4 00012 #define C270_320x240 5 00013 #define C270_352x288 6 00014 #define C270_432x240 7 00015 #define C270_640x480 1 00016 #define C270_544x288 8 00017 #define C270_640x360 9 00018 #define C270_752x416 10 00019 #define C270_800x448 11 00020 #define C270_800x600 12 00021 00022 #define C270_MJPEG 2 00023 #define C270_YUV2 1 00024 00025 #define C270_EN 0x81 00026 #define C270_MPS 192 00027 #define C270_IF_ALT 1 00028 00029 #define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);}; 00030 00031 class IsochronousEp; 00032 class BaseUvc; 00033 /** 00034 * A class to communicate a C270 00035 */ 00036 class USBHostC270 : public IUSBEnumerator, public BaseUvc, public decodeMJPEG { 00037 public: 00038 /** 00039 * Constructor 00040 * 00041 */ 00042 USBHostC270(int formatIndex = C270_MJPEG, int frameIndex = C270_160x120, uint32_t interval = _5FPS); 00043 00044 /** 00045 * Check if a C270 device is connected 00046 * 00047 * @return true if a MSD device is connected 00048 */ 00049 bool connected(); 00050 00051 /** 00052 * Try to connect to a C270 device 00053 * 00054 * @return true if connection was successful 00055 */ 00056 bool connect(); 00057 00058 /** 00059 * read jpeg image 00060 * 00061 * @param buf read buffer 00062 * @param size buffer size 00063 * @param timeout_ms timeout default 15sec 00064 * @return jpeg size if read success else -1 00065 */ 00066 int readJPEG(uint8_t* buf, int size, int timeout_ms = 15*1000); 00067 00068 protected: 00069 //From IUSBEnumerator 00070 virtual void setVidPid(uint16_t vid, uint16_t pid); 00071 virtual bool parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol); //Must return true if the interface should be parsed 00072 virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used 00073 00074 private: 00075 bool dev_connected; 00076 00077 int c270_intf; 00078 bool c270_device_found; 00079 bool c270_vid_pid_found; 00080 int _formatIndex; 00081 int _frameIndex; 00082 uint32_t _interval; 00083 uint8_t _seq; 00084 uint8_t* _buf; 00085 int _pos; 00086 int _size; 00087 00088 virtual void outputJPEG(uint8_t c, int status); // from decodeMJPEG 00089 void callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len); 00090 void init(); 00091 void onDisconnect(); 00092 };
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