spca5xx.h

应用于linux系统的usb接口的摄像头驱动

#ifndef SPCA50X_H
#define SPCA50X_H

/*
 * Header file for SPCA50x based camera driver. Originally copied from ov511 driver.
 * Originally by Mark W. McClelland
 * SPCA50x version by Joel Crisp; all bugs are mine, all nice features are his.
 */

#ifdef __KERNEL__
#include <asm/uaccess.h>
#include <linux/videodev.h>
#include <linux/smp_lock.h>
#include <linux/usb.h>
#include <linux/version.h>

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) && LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)

#define urb_t struct urb
#endif				/* LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) */

//static const char SPCA50X_H_CVS_VERSION[]="$Id: spca50x.h,v 1.28 2004/01/10 21:37:40 mxhaard Exp $";

/* V4L API extension for raw JPEG (=JPEG without header) and JPEG with header   
 */
#define VIDEO_PALETTE_RAW_JPEG  20
#define VIDEO_PALETTE_JPEG 21

#ifdef SPCA50X_ENABLE_DEBUG

#  define PDEBUG(level, fmt, args...) \
if (debug >= level) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
#else				/* SPCA50X_ENABLE_DEBUG */
#  define PDEBUG(level, fmt, args...) do {} while(0)
#endif				/* SPCA50X_ENABLE_DEBUG */

//#define FRAMES_PER_DESC               10      /* Default value, should be reasonable */
#define FRAMES_PER_DESC		16	/* Default value, should be reasonable */
#define MAX_FRAME_SIZE_PER_DESC 1024

#define SPCA50X_MAX_WIDTH 640
#define SPCA50X_MAX_HEIGHT 480

#define SPCA50X_ENDPOINT_ADDRESS 1	/* Isoc endpoint number */
#define PAC207_ENDPOINT_ADDRESS 5	/* Isoc endpoint number */
/* only 2 or 4 frames are allowed here !!! */
#define SPCA50X_NUMFRAMES	2
#define SPCA50X_NUMSBUF	2

#define BRIDGE_SPCA505 0
#define BRIDGE_SPCA506 1
#define BRIDGE_SPCA501 2
#define BRIDGE_SPCA508 3
#define BRIDGE_SPCA504 4
#define BRIDGE_SPCA500 5
#define BRIDGE_SPCA504B 6
#define BRIDGE_SPCA533 7
#define BRIDGE_SPCA504C 8
#define BRIDGE_SPCA561 9
#define BRIDGE_SPCA536 10
#define BRIDGE_SONIX 11
#define BRIDGE_ZC3XX 12
#define BRIDGE_CX11646 13
#define BRIDGE_TV8532 14
#define BRIDGE_ETOMS 15
#define BRIDGE_SN9CXXX 16
#define BRIDGE_MR97311 17
#define BRIDGE_PAC207 18

#define SENSOR_SAA7113 0
#define SENSOR_INTERNAL 1
#define SENSOR_HV7131B  2
#define SENSOR_HDCS1020 3
#define SENSOR_PB100_BA 4
#define SENSOR_PB100_92	5
#define SENSOR_PAS106_80 6
#define SENSOR_TAS5130C 7
#define SENSOR_ICM105A 8
#define SENSOR_HDCS2020 9
#define SENSOR_PAS106 10
#define SENSOR_PB0330 11
#define SENSOR_HV7131C 12
#define SENSOR_CS2102 13
#define SENSOR_HDCS2020b 14
#define SENSOR_HV7131R 15
#define SENSOR_OV7630 16
#define SENSOR_MI0360 17
#define SENSOR_TAS5110 18
#define SENSOR_PAS202 19
#define SENSOR_PAC207 20
#define SENSOR_OV7630C 21

/* Alternate interface transfer sizes */
#define SPCA50X_ALT_SIZE_0       0
#define SPCA50X_ALT_SIZE_128     1
#define SPCA50X_ALT_SIZE_256     1
#define SPCA50X_ALT_SIZE_384     2
#define SPCA50X_ALT_SIZE_512     3
#define SPCA50X_ALT_SIZE_640     4
#define SPCA50X_ALT_SIZE_768     5
#define SPCA50X_ALT_SIZE_896     6
#define SPCA50X_ALT_SIZE_1023    7

/* Sequence packet identifier for a dropped packet */
#define SPCA50X_SEQUENCE_DROP 0xFF

/* Type bit for 10 byte header snapshot flag */
#define SPCA50X_SNAPBIT 0x40
#define SPCA50X_SNAPCTRL 0x80

/* Offsets into the 10 byte header on the first ISO packet */
#define SPCA50X_OFFSET_SEQUENCE 0

/* Generic frame packet header offsets */
#define SPCA50X_OFFSET_TYPE     1
#define SPCA50X_OFFSET_COMPRESS 2
#define SPCA50X_OFFSET_THRESHOLD 3
#define SPCA50X_OFFSET_QUANT 4
#define SPCA50X_OFFSET_QUANT2 5
#define SPCA50X_OFFSET_FRAMSEQ 6
#define SPCA50X_OFFSET_EDGE_AUDIO 7
#define SPCA50X_OFFSET_GPIO 8
#define SPCA50X_OFFSET_RESERVED 9
#define SPCA50X_OFFSET_DATA 10

/* Bitmask for properties at offsets above */
#define SPCA50X_PROP_COMP_ENABLE(d) ( (d) & 1 )
#define SPCA50X_PROP_SNAP(d) ( (d) & SPCA50X_SNAPBIT )
#define SPCA50X_PROP_SNAP_CTRL(d) ( (d) & SPCA50X_SNAPCTRL )
#define SPCA50X_PROP_COMP_T3A(d) ( ((d) & 0xA ) >> 2)
#define SPCA50X_PROP_COMP_T3D(d) ( ((d) & 0x70 ) >> 4)

/* USB control */
#define SPCA50X_REG_USB 0x2
#define SPCA50X_USB_CTRL 0x0
#define SPCA50X_CUSB_ENABLE 0x1
#define SPCA50X_CUSB_PREFETCH 0x2


/* Global control register */
#define SPCA50X_REG_GLOBAL 0x3

#define SPCA50X_GLOBAL_MISC0 0x0	// Global control miscellaneous 0
#define SPCA50X_GMISC0_IDSEL 0x1	// Global control device ID select
#define SPCA50X_GMISC0_EXTTXEN 0x2	// Global control USB Transceiver select

#define SPCA50X_GLOBAL_MISC1 0x1
#define SPCA50X_GMISC1_BLKUSBRESET 0x1
#define SPCA50X_GMISC1_BLKSUSPEND 0x2
#define SPCA50X_GMISC1_DRAMOUTEN 0x10
#define SPCA50X_GMISC1_INTRAMCRTEN 0x20

#define SPCA50X_GLOBAL_MISC2 0x2

#define SPCA50X_GLOBAL_MISC3 0x3
#define SPCA50X_GMISC3_SSC 0x1
#define SPCA50X_GMISC3_SSD 0x2
#define SPCA50X_GMISC3_SAA7113RST 0x20	/* Not sure about this one */

#define SPCA50X_GLOBAL_MISC4 0x4
#define SPCA50X_GMISC4_SSCEN 0x1
#define SPCA50X_GMISC4_SSDEN 0x2

#define SPCA50X_GLOBAL_MISC5 0x5
#define SPCA50X_GMISC5_SSD 0x2

#define SPCA50X_GLOBAL_MISC6 0x6

/* Image format and compression control */
#define SPCA50X_REG_COMPRESS 0x4

#define SPCA50X_COMPRESS_MISC1 0x1
#define SPCA50X_CMISC1_TVFIELDPROCESS 0x40

#define SPCA50X_COMPRESS_ENABLE 0x8
#define SPCA50X_CENABLE_ENABLE 0x1

/* SAA 7113 */
/* TV control register */
#define SPCA50X_REG_TV 0x8

#define SPCA50X_TV_MISC0 0x0
#define SPCA50X_TMISC0_PAL 0x1
#define SPCA50X_TMISC0_SINGLECHANNEL 0x2
#define SPCA50X_TMISC0_EXTFIELD 0x4
#define SPCA50X_TMISC0_INVFIELD 0x8
#define SPCA50X_TMISC0_PIXSEL 0x30	/* Not sure what this does */
#define SPCA50x_TMISC0_ADD128 0x80

/* I2C interface on an SPCA505, SPCA506, SPCA508 */
#define SPCA50X_REG_I2C_CTRL 0x7
#define SPCA50X_I2C_DEVICE 0x4
#define SPCA50X_I2C_SUBADDR 0x1
#define SPCA50X_I2C_VALUE 0x0
#define SPCA50X_I2C_TRIGGER 0x2
#define SPCA50X_I2C_TRIGGER_BIT 0x1
#define SPCA50X_I2C_READ 0x0
#define SPCA50X_I2C_STATUS 0x3

#define SAA7113_REG_STATUS 0x1f

#define SAA7113_I2C_BASE_WRITE 0x4A
#define SAA7113_I2C_BASE_READ 0x4A	/* SPCA50x seems to add the read bit itself */
#define SAA7113_I2C_ALT_BASE_WRITE 0x48
#define SAA7113_I2C_ALT_BASE_READ 0x48	/* SPCA50x seems to add the read bit itself */




#define SAA7113_STATUS_READY(d) (d & 0x1)
#define SAA7113_STATUS_COPRO(d) (d & 0x2)
#define SAA7113_STATUS_WIPA(d)  (d & 0x4)
#define SAA7113_STATUS_GLIMB(d) (d & 0x8)
#define SAA7113_STATUS_GLIMT(d) (d & 0x10)
#define SAA7113_STATUS_FIDT(d)  (d & 0x20)
#define SAA7113_STATUS_HLVLN(d) (d & 0x40)
#define SAA7113_STATUS_INTL(d) (d & 0x80)



/* Scratch buffer for 2 lines of YUV data */
#define SCRATCH_BUF_SIZE 3*SPCA50X_MAX_WIDTH

/* Brightness autoadjustment parameters*/
#define NSTABLE_MAX 4
#define NUNSTABLE_MAX 600
#define MIN_BRIGHTNESS 10

/* Camera type jpeg yuvy yyuv yuyv grey gbrg*/
enum {
    JPEG = 0,			//Jpeg 4.1.1 Sunplus
    JPGH,			//jpeg 4.2.2 Zstar
    JPGC,			//jpeg 4.2.2 Conexant
    JPGS,			//jpeg 4.2.2 Sonix
    JPGM,			//jpeg 4.2.2 Mars-Semi
    YUVY,
    YYUV,
    YUYV,
    GREY,
    GBRG,
    SN9C,			// Sonix compressed stream
    GBGR,
    S561,			// Sunplus Compressed stream
    PGBRG,			// Pixart RGGB bayer
};

enum { QCIF = 1,
    QSIF,
    QPAL,
    CIF,
    SIF,
    PAL,
    VGA,
    CUSTOM,
    TOTMODE,
};

/* available palette */
#define P_RGB16  1
#define P_RGB24  (1 << 1)
#define P_RGB32  (1 << 2)
#define P_YUV420  (1 << 3)
#define P_YUV422 ( 1 << 4)
#define P_RAW  (1 << 5)
#define P_JPEG  (1 << 6)

struct mwebcam {
    int width;
    int height;
    __u16 t_palette;
    __u16 pipe;
    int method;
    int mode;
};
struct video_param {
    int chg_para;
#define CHGABRIGHT 1
#define CHGQUALITY 2
#define CHGTINTER  4
    __u8 autobright;
    __u8 quality;
    __u16 time_interval;
};
/* Our private ioctl */
#define SPCAGVIDIOPARAM _IOR('v',BASE_VIDIOCPRIVATE + 1,struct video_param)