#ifndef _SONIX_CAM_DEVICE_H
#define _SONIX_CAM_DEVICE_H

#include "CamDevice.h"

#define SN9C102_REG_COUNT	0x20
/* SN9c102 registers */
#define SN9C102_ASIC_ID		0x00
#define SN9C102_CHIP_CTRL	0x01
#define SN9C102_GPIO			0x02
#define SN9C102_I2C_SETUP	0x08
#define SN9C102_I2C_SLAVE_ID	0x09 
#define SN9C102_I2C_DATA0	0x0a
#define SN9C102_I2C_DATA1	0x0b
#define SN9C102_I2C_DATA2	0x0c
#define SN9C102_I2C_DATA3	0x0d
#define SN9C102_I2C_DATA4	0x0e
#define SN9C102_CONTROL_STAT	0x0f /*I2C ??*/
#define SN9C102_R_B_GAIN		0x10
#define SN9C102_G_GAIN		0x11 /* Green channel gain control. -> Gain = (1+G_GAIN/8) 
							    Note: It is sync with VSYNC */
#define SN9C102_H_START		0x12 /* Start active pixel number after H­sync of sensor 
							    Note: 
							    The 1st line sequence of image data is BGBGBG 
							    The 2nd line sequence of image data is GRGRGR */
#define SN9C102_V_START		0x13 /* Start active line number after V­sync of sensor */
#define SN9C102_OFFSET		0x14 /* Offset adjustment for sensor image data. */
#define SN9C102_H_SIZE		0x15 /* Horizontal pixel number for sensor. */
#define SN9C102_V_SIZE		0x16 /* Vertical pixel number for sensor. */
#define SN9C102_CLOCK_SEL	0x17
#define SN9C102_SYNC_N_SCALE	0x18
#define SN9C102_PIX_CLK		0x19
#define SN9C102_HO_SIZE		0x1a /* /32 */
#define SN9C102_VO_SIZE		0x1b /* /32 */
#define SN9C102_AE_STRX		0x1c
#define SN9C102_AE_STRY		0x1d
#define SN9C102_AE_ENDX		0x1e
#define SN9C102_AE_ENDY		0x1f

// This class represents each webcam
class SonixCamDevice : public CamDevice
{
	public: 
						SonixCamDevice(CamDeviceAddon &_addon, BUSBDevice* _device);
						~SonixCamDevice();
	virtual bool		SupportsBulk();
	virtual bool		SupportsIsochronous();
	virtual status_t	StartTransfer();
	virtual status_t	StopTransfer();

	// generic register-like access
	virtual ssize_t		WriteReg(uint16 address, uint8 *data, size_t count=1);
	virtual ssize_t		ReadReg(uint16 address, uint8 *data, size_t count=1, bool cached=false);
	
	// I2C-like access
	virtual status_t	GetStatusIIC();
	virtual status_t	WaitReadyIIC();
	virtual ssize_t		WriteIIC(uint8 address, uint8 *data, size_t count=1);
	virtual ssize_t		ReadIIC(uint8 address, uint8 *data);
					
	virtual status_t	SetVideoFrame(BRect rect);
	virtual status_t	SetScale(float scale);
	virtual status_t	SetVideoParams(float brightness, float contrast, float hue, float red, float green, float blue);

	// for use by deframer
	virtual size_t		MinRawFrameSize();
	virtual size_t		MaxRawFrameSize();
	virtual bool		ValidateStartOfFrameTag(const uint8 *tag, size_t taglen);
	virtual bool		ValidateEndOfFrameTag(const uint8 *tag, size_t taglen, size_t datalen);

	virtual status_t	GetFrameBitmap(BBitmap **bm, bigtime_t *stamp=NULL);
	virtual status_t	FillFrameBuffer(BBuffer *buffer, bigtime_t *stamp=NULL);
	

	void				DumpRegs();

	private:
	status_t			SendCommand(uint8 dir, uint8 request, uint16 value,
									uint16 index, uint16 length, void* data);
	uint8				fCachedRegs[SN9C102_REG_COUNT];
	int					fChipVersion;

	int					fFrameTagState;
};

// the addon itself, that instanciate

class SonixCamDeviceAddon : public CamDeviceAddon
{
	public:
						SonixCamDeviceAddon(WebCamMediaAddOn* webcam);
	virtual 			~SonixCamDeviceAddon();
						
	virtual const char	*BrandName();
	virtual SonixCamDevice	*Instantiate(CamRoster &roster, BUSBDevice *from);
	
};



#endif /* _SONIX_CAM_DEVICE_H */