1 /* 2 * Copyright 2004-2008, François Revol, <revol@free.fr>. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef _CAM_SENSOR_H 6 #define _CAM_SENSOR_H 7 8 #include "CamDevice.h" 9 #include <Rect.h> 10 11 // This class represents the camera's (cmos or whatever) sensor chip 12 class CamSensor { 13 public: 14 CamSensor(CamDevice *_camera); 15 virtual ~CamSensor(); 16 17 virtual status_t Probe(); // returns B_OK if found. 18 19 virtual status_t InitCheck(); 20 21 virtual status_t Setup(); 22 23 virtual const char* Name(); 24 25 virtual status_t StartTransfer(); 26 virtual status_t StopTransfer(); 27 virtual bool TransferEnabled() const { return fTransferEnabled; }; 28 29 virtual bool IsBigEndian() const { return fIsBigEndian; }; 30 virtual bool Use400kHz() const { return false; }; 31 virtual bool UseRealIIC() const { return true; }; 32 virtual uint8 IICReadAddress() const { return 0; }; 33 virtual uint8 IICWriteAddress() const { return 0; }; 34 35 virtual int MaxWidth() const { return -1; }; 36 virtual int MaxHeight() const { return -1; }; 37 38 virtual status_t AcceptVideoFrame(uint32 &width, uint32 &height); 39 virtual status_t SetVideoFrame(BRect rect); 40 virtual BRect VideoFrame() const { return fVideoFrame; }; 41 virtual status_t SetVideoParams(float brightness, float contrast, float hue, float red, float green, float blue); 42 43 virtual void AddParameters(BParameterGroup *group, int32 &index); 44 virtual status_t GetParameterValue(int32 id, bigtime_t *last_change, void *value, size_t *size); 45 virtual status_t SetParameterValue(int32 id, bigtime_t when, const void *value, size_t size); 46 47 CamDevice *Device(); 48 49 #if 0 50 // generic register-like access 51 virtual status_t WriteReg(uint16 address, uint8 *data, size_t count=1); 52 virtual status_t WriteReg8(uint16 address, uint8 data); 53 virtual status_t WriteReg16(uint16 address, uint16 data); 54 virtual status_t ReadReg(uint16 address, uint8 *data, size_t count=1, bool cached=false); 55 56 // I2C-like access 57 virtual status_t WriteIIC(uint8 address, uint8 *data, size_t count=1); 58 virtual status_t ReadIIC(uint8 address, uint8 *data); 59 #endif 60 protected: 61 62 status_t ProbeByIICSignature(const uint8 *regList, 63 const uint8 *matchList, 64 size_t count); 65 66 status_t fInitStatus; 67 bool fIsBigEndian; 68 bool fTransferEnabled; 69 BRect fVideoFrame; 70 int32 fFirstParameterID; 71 bigtime_t fLastParameterChanges; 72 private: 73 CamDevice *fCamDevice; 74 }; 75 76 // internal modules 77 #define B_WEBCAM_DECLARE_SENSOR(sensorclass,sensorname) \ 78 extern "C" CamSensor *Instantiate##sensorclass(CamDevice *cam); \ 79 CamSensor *Instantiate##sensorclass(CamDevice *cam) \ 80 { return new sensorclass(cam); }; 81 82 83 #endif /* _CAM_SENSOR_H */ 84