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LogitechC270 webcam class driver alpha version
Fork of USBHostMSD_HelloWorld by
Diff: USBHostCam/USBHostCam.h
- Revision:
- 12:ea4badc78215
diff -r 6a8eef89eb22 -r ea4badc78215 USBHostCam/USBHostCam.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHostCam/USBHostCam.h Wed Mar 20 14:28:39 2013 +0000 @@ -0,0 +1,101 @@ +// USBHostCam.h +#include "USBHostConf.h" +#include "USBHost.h" +#include "USBIsochronous.h" +#include "BaseUvc.h" +#include "decodeMJPEG.h" +#pragma once + +#define _160x120 2 +#define _176x144 3 +#define _320x176 4 +#define _320x240 5 +#define _352x288 6 +#define _432x240 7 +#define _640x480 1 +#define _544x288 8 +#define _640x360 9 +#define _752x416 10 +#define _800x448 11 +#define _800x600 12 + +#define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);}; + +struct CamInfo { + uint16_t vid; + uint16_t pid; + uint8_t size; + uint8_t option; +// + const char* name; + uint8_t formatIndex; + uint8_t frameIndex; + uint32_t interval; + uint8_t en; + uint8_t mps; + uint8_t if_alt; + uint8_t frameCount; // ITD frame count 1-8 + uint8_t queueLimit; // ITD queue limit 1-3 +}; + +/** + * A class to communicate a Cam + */ +class USBHostCam : public IUSBEnumerator, public BaseUvc, public decodeMJPEG { +public: + /** + * Constructor + * + */ + USBHostCam(uint8_t size = _160x120, uint8_t option = 0, CamInfo* user_caminfo = NULL); + + /** + * Check if a Cam device is connected + * + * @return true if a Cam device is connected + */ + bool connected(); + + /** + * Try to connect to a Cam device + * + * @return true if connection was successful + */ + bool connect(); + + /** + * read jpeg image + * + * @param buf read buffer + * @param size buffer size + * @param timeout_ms timeout default 15sec + * @return jpeg size if read success else -1 + */ + int readJPEG(uint8_t* buf, int size, int timeout_ms = 15*1000); + +protected: + //From IUSBEnumerator + virtual void setVidPid(uint16_t vid, uint16_t pid); + 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 + virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used + +private: + bool dev_connected; + + int cam_intf; + bool device_found; + bool caminfo_found; + uint8_t _seq; + uint8_t* _buf; + int _pos; + int _size; + CamInfo* CamInfoList; + CamInfo* caminfo; + uint8_t _caminfo_size; + uint8_t _caminfo_option; + + virtual void outputJPEG(uint8_t c, int status); // from decodeMJPEG + void callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len); + void init(); + void onDisconnect(); +};