Usb read
Dependencies: FATFileSystem
Fork of F401RE-USBHost by
USBHostCam.h
00001 // USBHostCam.h 00002 #include "USBHostConf.h" 00003 #include "USBHost.h" 00004 #include "BaseUvc.h" 00005 #include "decodeMJPEG.h" 00006 #pragma once 00007 00008 #define _160x120 2 00009 #define _176x144 3 00010 #define _320x176 4 00011 #define _320x240 5 00012 #define _352x288 6 00013 #define _432x240 7 00014 #define _640x480 1 00015 #define _544x288 8 00016 #define _640x360 9 00017 #define _752x416 10 00018 #define _800x448 11 00019 #define _800x600 12 00020 00021 #define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);}; 00022 00023 struct CamInfo { 00024 uint16_t vid; 00025 uint16_t pid; 00026 uint8_t size; 00027 uint8_t option; 00028 // 00029 const char* name; 00030 uint8_t formatIndex; 00031 uint8_t frameIndex; 00032 uint32_t interval; 00033 uint8_t en; 00034 uint8_t mps; 00035 uint8_t if_alt; 00036 }; 00037 00038 /** 00039 * A class to communicate a Cam 00040 */ 00041 class USBHostCam : public IUSBEnumerator, public BaseUvc, public decodeMJPEG { 00042 public: 00043 /** 00044 * Constructor 00045 * 00046 */ 00047 USBHostCam(uint8_t size = _160x120, uint8_t option = 0, CamInfo* user_caminfo = NULL); 00048 00049 /** 00050 * Check if a Cam device is connected 00051 * 00052 * @return true if a Cam device is connected 00053 */ 00054 bool connected(); 00055 00056 /** 00057 * Try to connect to a Cam device 00058 * 00059 * @return true if connection was successful 00060 */ 00061 bool connect(); 00062 00063 /** 00064 * read jpeg image 00065 * 00066 * @param buf read buffer 00067 * @param size buffer size 00068 * @param timeout_ms timeout default 15sec 00069 * @return jpeg size if read success else -1 00070 */ 00071 int readJPEG(uint8_t* buf, int size, int timeout_ms = 15*1000); 00072 00073 protected: 00074 //From IUSBEnumerator 00075 virtual void setVidPid(uint16_t vid, uint16_t pid); 00076 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 00077 virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used 00078 00079 private: 00080 bool dev_connected; 00081 00082 int cam_intf; 00083 bool device_found; 00084 bool caminfo_found; 00085 00086 uint8_t _seq; 00087 uint8_t* _buf; 00088 int _pos; 00089 int _size; 00090 CamInfo* CamInfoList; 00091 CamInfo* caminfo; 00092 uint8_t _caminfo_size; 00093 uint8_t _caminfo_option; 00094 00095 virtual void outputJPEG(uint8_t c, int status); // from decodeMJPEG 00096 void callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len); 00097 void init(); 00098 };
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