LXR linux/drivers/media/video/usbvision/usbvision.h

   1/*
   2 * USBVISION.H
   3 *  usbvision header file
   4 *
   5 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   6 *                         Dwaine Garden <dwainegarden@rogers.com>
   7 *
   8 *
   9 * Report problems to v4l MailingList: linux-media@vger.kernel.org
  10 *
  11 * This module is part of usbvision driver project.
  12 * Updates to driver completed by Dwaine P. Garden
  13 * v4l2 conversion by Thierry Merle <thierry.merle@free.fr>
  14 *
  15 * This program is free software; you can redistribute it and/or modify
  16 * it under the terms of the GNU General Public License as published by
  17 * the Free Software Foundation; either version 2 of the License, or
  18 * (at your option) any later version.
  19 *
  20 * This program is distributed in the hope that it will be useful,
  21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 * GNU General Public License for more details.
  24 *
  25 * You should have received a copy of the GNU General Public License
  26 * along with this program; if not, write to the Free Software
  27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  28 */
  29
  30
  31#ifndef __LINUX_USBVISION_H
  32#define __LINUX_USBVISION_H
  33
  34#include <linux/list.h>
  35#include <linux/usb.h>
  36#include <linux/i2c.h>
  37#include <linux/mutex.h>
  38#include <media/v4l2-device.h>
  39#include <media/tuner.h>
  40#include <linux/videodev2.h>
  41
  42#define USBVISION_DEBUG         /* Turn on debug messages */
  43
  44#define USBVISION_PWR_REG               0x00
  45        #define USBVISION_SSPND_EN              (1 << 1)
  46        #define USBVISION_RES2                  (1 << 2)
  47        #define USBVISION_PWR_VID               (1 << 5)
  48        #define USBVISION_E2_EN                 (1 << 7)
  49#define USBVISION_CONFIG_REG            0x01
  50#define USBVISION_ADRS_REG              0x02
  51#define USBVISION_ALTER_REG             0x03
  52#define USBVISION_FORCE_ALTER_REG       0x04
  53#define USBVISION_STATUS_REG            0x05
  54#define USBVISION_IOPIN_REG             0x06
  55        #define USBVISION_IO_1                  (1 << 0)
  56        #define USBVISION_IO_2                  (1 << 1)
  57        #define USBVISION_AUDIO_IN              0
  58        #define USBVISION_AUDIO_TV              1
  59        #define USBVISION_AUDIO_RADIO           2
  60        #define USBVISION_AUDIO_MUTE            3
  61#define USBVISION_SER_MODE              0x07
  62#define USBVISION_SER_ADRS              0x08
  63#define USBVISION_SER_CONT              0x09
  64#define USBVISION_SER_DAT1              0x0A
  65#define USBVISION_SER_DAT2              0x0B
  66#define USBVISION_SER_DAT3              0x0C
  67#define USBVISION_SER_DAT4              0x0D
  68#define USBVISION_EE_DATA               0x0E
  69#define USBVISION_EE_LSBAD              0x0F
  70#define USBVISION_EE_CONT               0x10
  71#define USBVISION_DRM_CONT                      0x12
  72        #define USBVISION_REF                   (1 << 0)
  73        #define USBVISION_RES_UR                (1 << 2)
  74        #define USBVISION_RES_FDL               (1 << 3)
  75        #define USBVISION_RES_VDW               (1 << 4)
  76#define USBVISION_DRM_PRM1              0x13
  77#define USBVISION_DRM_PRM2              0x14
  78#define USBVISION_DRM_PRM3              0x15
  79#define USBVISION_DRM_PRM4              0x16
  80#define USBVISION_DRM_PRM5              0x17
  81#define USBVISION_DRM_PRM6              0x18
  82#define USBVISION_DRM_PRM7              0x19
  83#define USBVISION_DRM_PRM8              0x1A
  84#define USBVISION_VIN_REG1              0x1B
  85        #define USBVISION_8_422_SYNC            0x01
  86        #define USBVISION_16_422_SYNC           0x02
  87        #define USBVISION_VSNC_POL              (1 << 3)
  88        #define USBVISION_HSNC_POL              (1 << 4)
  89        #define USBVISION_FID_POL               (1 << 5)
  90        #define USBVISION_HVALID_PO             (1 << 6)
  91        #define USBVISION_VCLK_POL              (1 << 7)
  92#define USBVISION_VIN_REG2              0x1C
  93        #define USBVISION_AUTO_FID              (1 << 0)
  94        #define USBVISION_NONE_INTER            (1 << 1)
  95        #define USBVISION_NOHVALID              (1 << 2)
  96        #define USBVISION_UV_ID                 (1 << 3)
  97        #define USBVISION_FIX_2C                (1 << 4)
  98        #define USBVISION_SEND_FID              (1 << 5)
  99        #define USBVISION_KEEP_BLANK            (1 << 7)
 100#define USBVISION_LXSIZE_I              0x1D
 101#define USBVISION_MXSIZE_I              0x1E
 102#define USBVISION_LYSIZE_I              0x1F
 103#define USBVISION_MYSIZE_I              0x20
 104#define USBVISION_LX_OFFST              0x21
 105#define USBVISION_MX_OFFST              0x22
 106#define USBVISION_LY_OFFST              0x23
 107#define USBVISION_MY_OFFST              0x24
 108#define USBVISION_FRM_RATE              0x25
 109#define USBVISION_LXSIZE_O              0x26
 110#define USBVISION_MXSIZE_O              0x27
 111#define USBVISION_LYSIZE_O              0x28
 112#define USBVISION_MYSIZE_O              0x29
 113#define USBVISION_FILT_CONT             0x2A
 114#define USBVISION_VO_MODE               0x2B
 115#define USBVISION_INTRA_CYC             0x2C
 116#define USBVISION_STRIP_SZ              0x2D
 117#define USBVISION_FORCE_INTRA           0x2E
 118#define USBVISION_FORCE_UP              0x2F
 119#define USBVISION_BUF_THR               0x30
 120#define USBVISION_DVI_YUV               0x31
 121#define USBVISION_AUDIO_CONT            0x32
 122#define USBVISION_AUD_PK_LEN            0x33
 123#define USBVISION_BLK_PK_LEN            0x34
 124#define USBVISION_PCM_THR1              0x38
 125#define USBVISION_PCM_THR2              0x39
 126#define USBVISION_DIST_THR_L            0x3A
 127#define USBVISION_DIST_THR_H            0x3B
 128#define USBVISION_MAX_DIST_L            0x3C
 129#define USBVISION_MAX_DIST_H            0x3D
 130#define USBVISION_OP_CODE               0x33
 131
 132#define MAX_BYTES_PER_PIXEL             4
 133
 134#define MIN_FRAME_WIDTH                 64
 135#define MAX_USB_WIDTH                   320  //384
 136#define MAX_FRAME_WIDTH                 320  //384                      /*streching sometimes causes crashes*/
 137
 138#define MIN_FRAME_HEIGHT                48
 139#define MAX_USB_HEIGHT                  240  //288
 140#define MAX_FRAME_HEIGHT                240  //288                      /*Streching sometimes causes crashes*/
 141
 142#define MAX_FRAME_SIZE                  (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * MAX_BYTES_PER_PIXEL)
 143#define USBVISION_CLIPMASK_SIZE         (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) //bytesize of clipmask
 144
 145#define USBVISION_URB_FRAMES            32
 146
 147#define USBVISION_NUM_HEADERMARKER      20
 148#define USBVISION_NUMFRAMES             3  /* Maximum number of frames an application can get */
 149#define USBVISION_NUMSBUF               2 /* Dimensioning the USB S buffering */
 150
 151#define USBVISION_POWEROFF_TIME         3 * (HZ)                // 3 seconds
 152
 153
 154#define FRAMERATE_MIN   0
 155#define FRAMERATE_MAX   31
 156
 157enum {
 158        ISOC_MODE_YUV422 = 0x03,
 159        ISOC_MODE_YUV420 = 0x14,
 160        ISOC_MODE_COMPRESS = 0x60,
 161};
 162
 163/* This macro restricts an int variable to an inclusive range */
 164#define RESTRICT_TO_RANGE(v,mi,ma) { if ((v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); }
 165
 166/*
 167 * We use macros to do YUV -> RGB conversion because this is
 168 * very important for speed and totally unimportant for size.
 169 *
 170 * YUV -> RGB Conversion
 171 * ---------------------
 172 *
 173 * B = 1.164*(Y-16)                 + 2.018*(V-128)
 174 * G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128)
 175 * R = 1.164*(Y-16) + 1.596*(U-128)
 176 *
 177 * If you fancy integer arithmetics (as you should), hear this:
 178 *
 179 * 65536*B = 76284*(Y-16)                 + 132252*(V-128)
 180 * 65536*G = 76284*(Y-16) -  53281*(U-128) -  25625*(V-128)
 181 * 65536*R = 76284*(Y-16) + 104595*(U-128)
 182 *
 183 * Make sure the output values are within [0..255] range.
 184 */
 185#define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x)))
 186#define YUV_TO_RGB_BY_THE_BOOK(my,mu,mv,mr,mg,mb) { \
 187    int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \
 188    mm_y = (my) - 16;  \
 189    mm_u = (mu) - 128; \
 190    mm_v = (mv) - 128; \
 191    mm_yc= mm_y * 76284; \
 192    mm_b = (mm_yc               + 132252*mm_v   ) >> 16; \
 193    mm_g = (mm_yc -  53281*mm_u -  25625*mm_v   ) >> 16; \
 194    mm_r = (mm_yc + 104595*mm_u                 ) >> 16; \
 195    mb = LIMIT_RGB(mm_b); \
 196    mg = LIMIT_RGB(mm_g); \
 197    mr = LIMIT_RGB(mm_r); \
 198}
 199
 200/* Debugging aid */
 201#define USBVISION_SAY_AND_WAIT(what) { \
 202        wait_queue_head_t wq; \
 203        init_waitqueue_head(&wq); \
 204        printk(KERN_INFO "Say: %s\n", what); \
 205        interruptible_sleep_on_timeout (&wq, HZ*3); \
 206}
 207
 208/*
 209 * This macro checks if usbvision is still operational. The 'usbvision'
 210 * pointer must be valid, usbvision->dev must be valid, we are not
 211 * removing the device and the device has not erred on us.
 212 */
 213#define USBVISION_IS_OPERATIONAL(udevice) (\
 214        (udevice != NULL) && \
 215        ((udevice)->dev != NULL) && \
 216        ((udevice)->last_error == 0) && \
 217        (!(udevice)->remove_pending))
 218
 219#define I2C_USB_ADAP_MAX        16
 220
 221#define USBVISION_NORMS (V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_M)
 222
 223/* ----------------------------------------------------------------- */
 224/* usbvision video structures                                        */
 225/* ----------------------------------------------------------------- */
 226enum ScanState {
 227        ScanState_Scanning,     /* Scanning for header */
 228        ScanState_Lines         /* Parsing lines */
 229};
 230
 231/* Completion states of the data parser */
 232enum ParseState {
 233        ParseState_Continue,    /* Just parse next item */
 234        ParseState_NextFrame,   /* Frame done, send it to V4L */
 235        ParseState_Out,         /* Not enough data for frame */
 236        ParseState_EndParse     /* End parsing */
 237};
 238
 239enum FrameState {
 240        FrameState_Unused,      /* Unused (no MCAPTURE) */
 241        FrameState_Ready,       /* Ready to start grabbing */
 242        FrameState_Grabbing,    /* In the process of being grabbed into */
 243        FrameState_Done,        /* Finished grabbing, but not been synced yet */
 244        FrameState_DoneHold,    /* Are syncing or reading */
 245        FrameState_Error,       /* Something bad happened while processing */
 246};
 247
 248/* stream states */
 249enum StreamState {
 250        Stream_Off,             /* Driver streaming is completely OFF */
 251        Stream_Idle,            /* Driver streaming is ready to be put ON by the application */
 252        Stream_Interrupt,       /* Driver streaming must be interrupted */
 253        Stream_On,              /* Driver streaming is put ON by the application */
 254};
 255
 256enum IsocState {
 257        IsocState_InFrame,      /* Isoc packet is member of frame */
 258        IsocState_NoFrame,      /* Isoc packet is not member of any frame */
 259};
 260
 261struct usb_device;
 262
 263struct usbvision_sbuf {
 264        char *data;
 265        struct urb *urb;
 266};
 267
 268#define USBVISION_MAGIC_1                       0x55
 269#define USBVISION_MAGIC_2                       0xAA
 270#define USBVISION_HEADER_LENGTH                 0x0c
 271#define USBVISION_SAA7111_ADDR                  0x48
 272#define USBVISION_SAA7113_ADDR                  0x4a
 273#define USBVISION_IIC_LRACK                     0x20
 274#define USBVISION_IIC_LRNACK                    0x30
 275#define USBVISION_FRAME_FORMAT_PARAM_INTRA      (1<<7)
 276
 277struct usbvision_v4l2_format_st {
 278        int             supported;
 279        int             bytes_per_pixel;
 280        int             depth;
 281        int             format;
 282        char            *desc;
 283};
 284#define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format)
 285
 286struct usbvision_frame_header {
 287        unsigned char magic_1;                          /* 0 magic */
 288        unsigned char magic_2;                          /* 1  magic */
 289        unsigned char headerLength;                     /* 2 */
 290        unsigned char frameNum;                         /* 3 */
 291        unsigned char framePhase;                       /* 4 */
 292        unsigned char frameLatency;                     /* 5 */
 293        unsigned char dataFormat;                       /* 6 */
 294        unsigned char formatParam;                      /* 7 */
 295        unsigned char frameWidthLo;                     /* 8 */
 296        unsigned char frameWidthHi;                     /* 9 */
 297        unsigned char frameHeightLo;                    /* 10 */
 298        unsigned char frameHeightHi;                    /* 11 */
 299        __u16 frameWidth;                               /* 8 - 9 after endian correction*/
 300        __u16 frameHeight;                              /* 10 - 11 after endian correction*/
 301};
 302
 303struct usbvision_frame {
 304        char *data;                                     /* Frame buffer */
 305        struct usbvision_frame_header isocHeader;       /* Header from stream */
 306
 307        int width;                                      /* Width application is expecting */
 308        int height;                                     /* Height */
 309        int index;                                      /* Frame index */
 310        int frmwidth;                                   /* Width the frame actually is */
 311        int frmheight;                                  /* Height */
 312
 313        volatile int grabstate;                         /* State of grabbing */
 314        int scanstate;                                  /* State of scanning */
 315
 316        struct list_head frame;
 317
 318        int curline;                                    /* Line of frame we're working on */
 319
 320        long scanlength;                                /* uncompressed, raw data length of frame */
 321        long bytes_read;                                /* amount of scanlength that has been read from data */
 322        struct usbvision_v4l2_format_st v4l2_format;    /* format the user needs*/
 323        int v4l2_linesize;                              /* bytes for one videoline*/
 324        struct timeval timestamp;
 325        int sequence;                                   // How many video frames we send to user
 326};
 327
 328#define CODEC_SAA7113   7113
 329#define CODEC_SAA7111   7111
 330#define BRIDGE_NT1003   1003
 331#define BRIDGE_NT1004   1004
 332#define BRIDGE_NT1005   1005
 333
 334struct usbvision_device_data_st {
 335        __u64 VideoNorm;
 336        const char *ModelString;
 337        int Interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */
 338        __u16 Codec;
 339        unsigned VideoChannels:3;
 340        unsigned AudioChannels:2;
 341        unsigned Radio:1;
 342        unsigned vbi:1;
 343        unsigned Tuner:1;
 344        unsigned Vin_Reg1_override:1;   /* Override default value with */
 345        unsigned Vin_Reg2_override:1;   /* Vin_Reg1, Vin_Reg2, etc. */
 346        unsigned Dvi_yuv_override:1;
 347        __u8 Vin_Reg1;
 348        __u8 Vin_Reg2;
 349        __u8 Dvi_yuv;
 350        __u8 TunerType;
 351        __s16 X_Offset;
 352        __s16 Y_Offset;
 353};
 354
 355/* Declared on usbvision-cards.c */
 356extern struct usbvision_device_data_st usbvision_device_data[];
 357extern struct usb_device_id usbvision_table[];
 358
 359struct usb_usbvision {
 360        struct v4l2_device v4l2_dev;
 361        struct video_device *vdev;                                      /* Video Device */
 362        struct video_device *rdev;                                      /* Radio Device */
 363        struct video_device *vbi;                                       /* VBI Device   */
 364
 365        /* i2c Declaration Section*/
 366        struct i2c_adapter i2c_adap;
 367
 368        struct urb *ctrlUrb;
 369        unsigned char ctrlUrbBuffer[8];
 370        int ctrlUrbBusy;
 371        struct usb_ctrlrequest ctrlUrbSetup;
 372        wait_queue_head_t ctrlUrb_wq;                                   // Processes waiting
 373
 374        /* configuration part */
 375        int have_tuner;
 376        int tuner_type;
 377        int bridgeType;                                                 // NT1003, NT1004, NT1005
 378        int radio;
 379        int video_inputs;                                               // # of inputs
 380        unsigned long freq;
 381        int AudioMute;
 382        int AudioChannel;
 383        int isocMode;                                                   // format of video data for the usb isoc-transfer
 384        unsigned int nr;                                                // Number of the device
 385
 386        /* Device structure */
 387        struct usb_device *dev;
 388        /* usb transfer */
 389        int num_alt;            /* Number of alternative settings */
 390        unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 391        unsigned char iface;                                            /* Video interface number */
 392        unsigned char ifaceAlt;                 /* Alt settings */
 393        unsigned char Vin_Reg2_Preset;
 394        struct mutex               lock;
 395        struct timer_list powerOffTimer;
 396        struct work_struct powerOffWork;
 397        int power;                                                      /* is the device powered on? */
 398        int user;                                                       /* user count for exclusive use */
 399        int initialized;                                                /* Had we already sent init sequence? */
 400        int DevModel;                                                   /* What type of USBVISION device we got? */
 401        enum StreamState streaming;                                     /* Are we streaming Isochronous? */
 402        int last_error;                                                 /* What calamity struck us? */
 403        int curwidth;                                                   /* width of the frame the device is currently set to*/
 404        int curheight;                                                  /* height of the frame the device is currently set to*/
 405        int stretch_width;                                              /* stretch-factor for frame width (from usb to screen)*/
 406        int stretch_height;                                             /* stretch-factor for frame height (from usb to screen)*/
 407        char *fbuf;                                                     /* Videodev buffer area for mmap*/
 408        int max_frame_size;                                             /* Bytes in one video frame */
 409        int fbuf_size;                                                  /* Videodev buffer size */
 410        spinlock_t queue_lock;                                          /* spinlock for protecting mods on inqueue and outqueue */
 411        struct list_head inqueue, outqueue;                             /* queued frame list and ready to dequeue frame list */
 412        wait_queue_head_t wait_frame;                                   /* Processes waiting */
 413        wait_queue_head_t wait_stream;                                  /* Processes waiting */
 414        struct usbvision_frame *curFrame;                               // pointer to current frame, set by usbvision_find_header
 415        struct usbvision_frame frame[USBVISION_NUMFRAMES];              // frame buffer
 416        int num_frames;                                                 // number of frames allocated
 417        struct usbvision_sbuf sbuf[USBVISION_NUMSBUF];                  // S buffering
 418        volatile int remove_pending;                                    /* If set then about to exit */
 419
 420        /* Scratch space from the Isochronous Pipe.*/
 421        unsigned char *scratch;
 422        int scratch_read_ptr;
 423        int scratch_write_ptr;
 424        int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
 425        int scratch_headermarker_read_ptr;
 426        int scratch_headermarker_write_ptr;
 427        enum IsocState isocstate;
 428        struct usbvision_v4l2_format_st palette;
 429
 430        struct v4l2_capability vcap;                                    /* Video capabilities */
 431        unsigned int ctl_input;                                         /* selected input */
 432        v4l2_std_id tvnormId;                                           /* selected tv norm */
 433        unsigned char video_endp;                                       /* 0x82 for USBVISION devices based */
 434
 435        // Decompression stuff:
 436        unsigned char *IntraFrameBuffer;                                /* Buffer for reference frame */
 437        int BlockPos;                                                   //for test only
 438        int requestIntra;                                               // 0 = normal; 1 = intra frame is requested;
 439        int lastIsocFrameNum;                                           // check for lost isoc frames
 440        int isocPacketSize;                                             // need to calculate usedBandwidth
 441        int usedBandwidth;                                              // used bandwidth 0-100%, need to set comprLevel
 442        int comprLevel;                                                 // How strong (100) or weak (0) is compression
 443        int lastComprLevel;                                             // How strong (100) or weak (0) was compression
 444        int usb_bandwidth;                                              /* Mbit/s */
 445
 446        /* Statistics that can be overlayed on the screen */
 447        unsigned long isocUrbCount;                     // How many URBs we received so far
 448        unsigned long urb_length;                       /* Length of last URB */
 449        unsigned long isocDataCount;                    /* How many bytes we received */
 450        unsigned long header_count;                     /* How many frame headers we found */
 451        unsigned long scratch_ovf_count;                /* How many times we overflowed scratch */
 452        unsigned long isocSkipCount;                    /* How many empty ISO packets received */
 453        unsigned long isocErrCount;                     /* How many bad ISO packets received */
 454        unsigned long isocPacketCount;                  // How many packets we totally got
 455        unsigned long timeInIrq;                        // How long do we need for interrupt
 456        int isocMeasureBandwidthCount;
 457        int frame_num;                                  // How many video frames we send to user
 458        int maxStripLen;                                // How big is the biggest strip
 459        int comprBlockPos;
 460        int stripLenErrors;                             // How many times was BlockPos greater than StripLen
 461        int stripMagicErrors;
 462        int stripLineNumberErrors;
 463        int ComprBlockTypes[4];
 464};
 465
 466#define call_all(usbvision, o, f, args...) \
 467        v4l2_device_call_all(&usbvision->v4l2_dev, 0, o, f, ##args)
 468
 469/* --------------------------------------------------------------- */
 470/* defined in usbvision-i2c.c                                      */
 471/* i2c-algo-usb declaration                                        */
 472/* --------------------------------------------------------------- */
 473
 474/* ----------------------------------------------------------------------- */
 475/* usbvision specific I2C functions                                        */
 476/* ----------------------------------------------------------------------- */
 477int usbvision_i2c_register(struct usb_usbvision *usbvision);
 478int usbvision_i2c_unregister(struct usb_usbvision *usbvision);
 479
 480/* defined in usbvision-core.c                                      */
 481int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
 482int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
 483                        unsigned char value);
 484
 485int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames);
 486void usbvision_frames_free(struct usb_usbvision *usbvision);
 487int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
 488void usbvision_scratch_free(struct usb_usbvision *usbvision);
 489int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
 490void usbvision_decompress_free(struct usb_usbvision *usbvision);
 491
 492int usbvision_setup(struct usb_usbvision *usbvision,int format);
 493int usbvision_init_isoc(struct usb_usbvision *usbvision);
 494int usbvision_restart_isoc(struct usb_usbvision *usbvision);
 495void usbvision_stop_isoc(struct usb_usbvision *usbvision);
 496int usbvision_set_alternate(struct usb_usbvision *dev);
 497
 498int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel);
 499int usbvision_audio_off(struct usb_usbvision *usbvision);
 500
 501int usbvision_begin_streaming(struct usb_usbvision *usbvision);
 502void usbvision_empty_framequeues(struct usb_usbvision *dev);
 503int usbvision_stream_interrupt(struct usb_usbvision *dev);
 504
 505int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
 506int usbvision_set_input(struct usb_usbvision *usbvision);
 507int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
 508
 509void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision);
 510void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision);
 511void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision);
 512int usbvision_power_off(struct usb_usbvision *usbvision);
 513int usbvision_power_on(struct usb_usbvision *usbvision);
 514
 515#endif                                                                  /* __LINUX_USBVISION_H */
 516
 517/*
 518 * Overrides for Emacs so that we follow Linus's tabbing style.
 519 * ---------------------------------------------------------------------------
 520 * Local variables:
 521 * c-basic-offset: 8
 522 * End:
 523 */
 524