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 : http://www.redhat.com/mailman/listinfo/video4linux-list
  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-common.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
 157 enum {
 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 /* ----------------------------------------------------------------- */
 226 enum ScanState {
 227         ScanState_Scanning,     /* Scanning for header */
 228         ScanState_Lines         /* Parsing lines */
 229 };
 230
 231 /* Completion states of the data parser */
 232 enum 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
 239 enum 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 */
 249 enum 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
 256 enum IsocState {
 257         IsocState_InFrame,      /* Isoc packet is member of frame */
 258         IsocState_NoFrame,      /* Isoc packet is not member of any frame */
 259 };
 260
 261 struct usb_device;
 262
 263 struct 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
 277 struct 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
 286 struct 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
 303 struct 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
 334 struct 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 */
 356 extern struct usbvision_device_data_st usbvision_device_data[];
 357 extern struct usb_device_id usbvision_table[];
 358
 359 struct usb_usbvision {
 360         struct video_device *vdev;                                      /* Video Device */
 361         struct video_device *rdev;                                      /* Radio Device */
 362         struct video_device *vbi;                                       /* VBI Device   */
 363
 364         /* i2c Declaration Section*/
 365         struct i2c_adapter i2c_adap;
 366         struct i2c_client i2c_client;
 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 tuner_addr;
 378         int bridgeType;                                                 // NT1003, NT1004, NT1005
 379         int radio;
 380         int video_inputs;                                               // # of inputs
 381         unsigned long freq;
 382         int AudioMute;
 383         int AudioChannel;
 384         int isocMode;                                                   // format of video data for the usb isoc-transfer
 385         unsigned int nr;                                                // Number of the device
 386
 387         /* Device structure */
 388         struct usb_device *dev;
 389         /* usb transfer */
 390         int num_alt;            /* Number of alternative settings */
 391         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 392         unsigned char iface;                                            /* Video interface number */
 393         unsigned char ifaceAlt;                 /* Alt settings */
 394         unsigned char Vin_Reg2_Preset;
 395         struct mutex               lock;
 396         struct timer_list powerOffTimer;
 397         struct work_struct powerOffWork;
 398         int power;                                                      /* is the device powered on? */
 399         int user;                                                       /* user count for exclusive use */
 400         int initialized;                                                /* Had we already sent init sequence? */
 401         int DevModel;                                                   /* What type of USBVISION device we got? */
 402         enum StreamState streaming;                                     /* Are we streaming Isochronous? */
 403         int last_error;                                                 /* What calamity struck us? */
 404         int curwidth;                                                   /* width of the frame the device is currently set to*/
 405         int curheight;                                                  /* height of the frame the device is currently set to*/
 406         int stretch_width;                                              /* stretch-factor for frame width (from usb to screen)*/
 407         int stretch_height;                                             /* stretch-factor for frame height (from usb to screen)*/
 408         char *fbuf;                                                     /* Videodev buffer area for mmap*/
 409         int max_frame_size;                                             /* Bytes in one video frame */
 410         int fbuf_size;                                                  /* Videodev buffer size */
 411         spinlock_t queue_lock;                                          /* spinlock for protecting mods on inqueue and outqueue */
 412         struct list_head inqueue, outqueue;                             /* queued frame list and ready to dequeue frame list */
 413         wait_queue_head_t wait_frame;                                   /* Processes waiting */
 414         wait_queue_head_t wait_stream;                                  /* Processes waiting */
 415         struct usbvision_frame *curFrame;                               // pointer to current frame, set by usbvision_find_header
 416         struct usbvision_frame frame[USBVISION_NUMFRAMES];              // frame buffer
 417         int num_frames;                                                 // number of frames allocated
 418         struct usbvision_sbuf sbuf[USBVISION_NUMSBUF];                  // S buffering
 419         volatile int remove_pending;                                    /* If set then about to exit */
 420
 421         /* Scratch space from the Isochronous Pipe.*/
 422         unsigned char *scratch;
 423         int scratch_read_ptr;
 424         int scratch_write_ptr;
 425         int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
 426         int scratch_headermarker_read_ptr;
 427         int scratch_headermarker_write_ptr;
 428         enum IsocState isocstate;
 429         struct usbvision_v4l2_format_st palette;
 430
 431         struct v4l2_capability vcap;                                    /* Video capabilities */
 432         unsigned int ctl_input;                                         /* selected input */
 433         v4l2_std_id tvnormId;                                           /* selected tv norm */
 434         unsigned char video_endp;                                       /* 0x82 for USBVISION devices based */
 435
 436         // Decompression stuff:
 437         unsigned char *IntraFrameBuffer;                                /* Buffer for reference frame */
 438         int BlockPos;                                                   //for test only
 439         int requestIntra;                                               // 0 = normal; 1 = intra frame is requested;
 440         int lastIsocFrameNum;                                           // check for lost isoc frames
 441         int isocPacketSize;                                             // need to calculate usedBandwidth
 442         int usedBandwidth;                                              // used bandwidth 0-100%, need to set comprLevel
 443         int comprLevel;                                                 // How strong (100) or weak (0) is compression
 444         int lastComprLevel;                                             // How strong (100) or weak (0) was compression
 445         int usb_bandwidth;                                              /* Mbit/s */
 446
 447         /* Statistics that can be overlayed on the screen */
 448         unsigned long isocUrbCount;                     // How many URBs we received so far
 449         unsigned long urb_length;                       /* Length of last URB */
 450         unsigned long isocDataCount;                    /* How many bytes we received */
 451         unsigned long header_count;                     /* How many frame headers we found */
 452         unsigned long scratch_ovf_count;                /* How many times we overflowed scratch */
 453         unsigned long isocSkipCount;                    /* How many empty ISO packets received */
 454         unsigned long isocErrCount;                     /* How many bad ISO packets received */
 455         unsigned long isocPacketCount;                  // How many packets we totally got
 456         unsigned long timeInIrq;                        // How long do we need for interrupt
 457         int isocMeasureBandwidthCount;
 458         int frame_num;                                  // How many video frames we send to user
 459         int maxStripLen;                                // How big is the biggest strip
 460         int comprBlockPos;
 461         int stripLenErrors;                             // How many times was BlockPos greater than StripLen
 462         int stripMagicErrors;
 463         int stripLineNumberErrors;
 464         int ComprBlockTypes[4];
 465 };
 466
 467
 468 /* --------------------------------------------------------------- */
 469 /* defined in usbvision-i2c.c                                      */
 470 /* i2c-algo-usb declaration                                        */
 471 /* --------------------------------------------------------------- */
 472
 473 /* ----------------------------------------------------------------------- */
 474 /* usbvision specific I2C functions                                        */
 475 /* ----------------------------------------------------------------------- */
 476 int usbvision_i2c_register(struct usb_usbvision *usbvision);
 477 int usbvision_i2c_unregister(struct usb_usbvision *usbvision);
 478 void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg);
 479
 480 /* defined in usbvision-core.c                                      */
 481 int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
 482 int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
 483                         unsigned char value);
 484
 485 int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames);
 486 void usbvision_frames_free(struct usb_usbvision *usbvision);
 487 int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
 488 void usbvision_scratch_free(struct usb_usbvision *usbvision);
 489 int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
 490 void usbvision_decompress_free(struct usb_usbvision *usbvision);
 491
 492 int usbvision_setup(struct usb_usbvision *usbvision,int format);
 493 int usbvision_init_isoc(struct usb_usbvision *usbvision);
 494 int usbvision_restart_isoc(struct usb_usbvision *usbvision);
 495 void usbvision_stop_isoc(struct usb_usbvision *usbvision);
 496 int usbvision_set_alternate(struct usb_usbvision *dev);
 497
 498 int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel);
 499 int usbvision_audio_off(struct usb_usbvision *usbvision);
 500
 501 int usbvision_begin_streaming(struct usb_usbvision *usbvision);
 502 void usbvision_empty_framequeues(struct usb_usbvision *dev);
 503 int usbvision_stream_interrupt(struct usb_usbvision *dev);
 504
 505 int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
 506 int usbvision_set_input(struct usb_usbvision *usbvision);
 507 int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
 508
 509 void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision);
 510 void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision);
 511 void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision);
 512 int usbvision_power_off(struct usb_usbvision *usbvision);
 513 int 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  */