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 <media/v4l2-common.h>
  38 #include <media/tuner.h>
  39 #include <linux/videodev2.h>
  40
  41 #define USBVISION_DEBUG         /* Turn on debug messages */
  42
  43 #ifndef VID_HARDWARE_USBVISION
  44         #define VID_HARDWARE_USBVISION 34   /* USBVision Video Grabber */
  45 #endif
  46
  47 #define USBVISION_PWR_REG               0x00
  48         #define USBVISION_SSPND_EN              (1 << 1)
  49         #define USBVISION_RES2                  (1 << 2)
  50         #define USBVISION_PWR_VID               (1 << 5)
  51         #define USBVISION_E2_EN                 (1 << 7)
  52 #define USBVISION_CONFIG_REG            0x01
  53 #define USBVISION_ADRS_REG              0x02
  54 #define USBVISION_ALTER_REG             0x03
  55 #define USBVISION_FORCE_ALTER_REG       0x04
  56 #define USBVISION_STATUS_REG            0x05
  57 #define USBVISION_IOPIN_REG             0x06
  58         #define USBVISION_IO_1                  (1 << 0)
  59         #define USBVISION_IO_2                  (1 << 1)
  60         #define USBVISION_AUDIO_IN              0
  61         #define USBVISION_AUDIO_TV              1
  62         #define USBVISION_AUDIO_RADIO           2
  63         #define USBVISION_AUDIO_MUTE            3
  64 #define USBVISION_SER_MODE              0x07
  65 #define USBVISION_SER_ADRS              0x08
  66 #define USBVISION_SER_CONT              0x09
  67 #define USBVISION_SER_DAT1              0x0A
  68 #define USBVISION_SER_DAT2              0x0B
  69 #define USBVISION_SER_DAT3              0x0C
  70 #define USBVISION_SER_DAT4              0x0D
  71 #define USBVISION_EE_DATA               0x0E
  72 #define USBVISION_EE_LSBAD              0x0F
  73 #define USBVISION_EE_CONT               0x10
  74 #define USBVISION_DRM_CONT                      0x12
  75         #define USBVISION_REF                   (1 << 0)
  76         #define USBVISION_RES_UR                (1 << 2)
  77         #define USBVISION_RES_FDL               (1 << 3)
  78         #define USBVISION_RES_VDW               (1 << 4)
  79 #define USBVISION_DRM_PRM1              0x13
  80 #define USBVISION_DRM_PRM2              0x14
  81 #define USBVISION_DRM_PRM3              0x15
  82 #define USBVISION_DRM_PRM4              0x16
  83 #define USBVISION_DRM_PRM5              0x17
  84 #define USBVISION_DRM_PRM6              0x18
  85 #define USBVISION_DRM_PRM7              0x19
  86 #define USBVISION_DRM_PRM8              0x1A
  87 #define USBVISION_VIN_REG1              0x1B
  88         #define USBVISION_8_422_SYNC            0x01
  89         #define USBVISION_16_422_SYNC           0x02
  90         #define USBVISION_VSNC_POL              (1 << 3)
  91         #define USBVISION_HSNC_POL              (1 << 4)
  92         #define USBVISION_FID_POL               (1 << 5)
  93         #define USBVISION_HVALID_PO             (1 << 6)
  94         #define USBVISION_VCLK_POL              (1 << 7)
  95 #define USBVISION_VIN_REG2              0x1C
  96         #define USBVISION_AUTO_FID              (1 << 0)
  97         #define USBVISION_NONE_INTER            (1 << 1)
  98         #define USBVISION_NOHVALID              (1 << 2)
  99         #define USBVISION_UV_ID                 (1 << 3)
 100         #define USBVISION_FIX_2C                (1 << 4)
 101         #define USBVISION_SEND_FID              (1 << 5)
 102         #define USBVISION_KEEP_BLANK            (1 << 7)
 103 #define USBVISION_LXSIZE_I              0x1D
 104 #define USBVISION_MXSIZE_I              0x1E
 105 #define USBVISION_LYSIZE_I              0x1F
 106 #define USBVISION_MYSIZE_I              0x20
 107 #define USBVISION_LX_OFFST              0x21
 108 #define USBVISION_MX_OFFST              0x22
 109 #define USBVISION_LY_OFFST              0x23
 110 #define USBVISION_MY_OFFST              0x24
 111 #define USBVISION_FRM_RATE              0x25
 112 #define USBVISION_LXSIZE_O              0x26
 113 #define USBVISION_MXSIZE_O              0x27
 114 #define USBVISION_LYSIZE_O              0x28
 115 #define USBVISION_MYSIZE_O              0x29
 116 #define USBVISION_FILT_CONT             0x2A
 117 #define USBVISION_VO_MODE               0x2B
 118 #define USBVISION_INTRA_CYC             0x2C
 119 #define USBVISION_STRIP_SZ              0x2D
 120 #define USBVISION_FORCE_INTRA           0x2E
 121 #define USBVISION_FORCE_UP              0x2F
 122 #define USBVISION_BUF_THR               0x30
 123 #define USBVISION_DVI_YUV               0x31
 124 #define USBVISION_AUDIO_CONT            0x32
 125 #define USBVISION_AUD_PK_LEN            0x33
 126 #define USBVISION_BLK_PK_LEN            0x34
 127 #define USBVISION_PCM_THR1              0x38
 128 #define USBVISION_PCM_THR2              0x39
 129 #define USBVISION_DIST_THR_L            0x3A
 130 #define USBVISION_DIST_THR_H            0x3B
 131 #define USBVISION_MAX_DIST_L            0x3C
 132 #define USBVISION_MAX_DIST_H            0x3D
 133 #define USBVISION_OP_CODE               0x33
 134
 135 #define MAX_BYTES_PER_PIXEL             4
 136
 137 #define MIN_FRAME_WIDTH                 64
 138 #define MAX_USB_WIDTH                   320  //384
 139 #define MAX_FRAME_WIDTH                 320  //384                      /*streching sometimes causes crashes*/
 140
 141 #define MIN_FRAME_HEIGHT                48
 142 #define MAX_USB_HEIGHT                  240  //288
 143 #define MAX_FRAME_HEIGHT                240  //288                      /*Streching sometimes causes crashes*/
 144
 145 #define MAX_FRAME_SIZE                  (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * MAX_BYTES_PER_PIXEL)
 146 #define USBVISION_CLIPMASK_SIZE         (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) //bytesize of clipmask
 147
 148 #define USBVISION_URB_FRAMES            32
 149 #define USBVISION_MAX_ISOC_PACKET_SIZE  959                     // NT1003 Specs Document says 1023
 150
 151 #define USBVISION_NUM_HEADERMARKER      20
 152 #define USBVISION_NUMFRAMES             3  /* Maximum number of frames an application can get */
 153 #define USBVISION_NUMSBUF               2 /* Dimensioning the USB S buffering */
 154
 155 #define USBVISION_POWEROFF_TIME         3 * (HZ)                // 3 seconds
 156
 157
 158 #define FRAMERATE_MIN   0
 159 #define FRAMERATE_MAX   31
 160
 161 enum {
 162         ISOC_MODE_YUV422 = 0x03,
 163         ISOC_MODE_YUV420 = 0x14,
 164         ISOC_MODE_COMPRESS = 0x60,
 165 };
 166
 167 /* This macro restricts an int variable to an inclusive range */
 168 #define RESTRICT_TO_RANGE(v,mi,ma) { if ((v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); }
 169
 170 /*
 171  * We use macros to do YUV -> RGB conversion because this is
 172  * very important for speed and totally unimportant for size.
 173  *
 174  * YUV -> RGB Conversion
 175  * ---------------------
 176  *
 177  * B = 1.164*(Y-16)                 + 2.018*(V-128)
 178  * G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128)
 179  * R = 1.164*(Y-16) + 1.596*(U-128)
 180  *
 181  * If you fancy integer arithmetics (as you should), hear this:
 182  *
 183  * 65536*B = 76284*(Y-16)                 + 132252*(V-128)
 184  * 65536*G = 76284*(Y-16) -  53281*(U-128) -  25625*(V-128)
 185  * 65536*R = 76284*(Y-16) + 104595*(U-128)
 186  *
 187  * Make sure the output values are within [0..255] range.
 188  */
 189 #define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x)))
 190 #define YUV_TO_RGB_BY_THE_BOOK(my,mu,mv,mr,mg,mb) { \
 191     int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \
 192     mm_y = (my) - 16;  \
 193     mm_u = (mu) - 128; \
 194     mm_v = (mv) - 128; \
 195     mm_yc= mm_y * 76284; \
 196     mm_b = (mm_yc               + 132252*mm_v   ) >> 16; \
 197     mm_g = (mm_yc -  53281*mm_u -  25625*mm_v   ) >> 16; \
 198     mm_r = (mm_yc + 104595*mm_u                 ) >> 16; \
 199     mb = LIMIT_RGB(mm_b); \
 200     mg = LIMIT_RGB(mm_g); \
 201     mr = LIMIT_RGB(mm_r); \
 202 }
 203
 204 /* Debugging aid */
 205 #define USBVISION_SAY_AND_WAIT(what) { \
 206         wait_queue_head_t wq; \
 207         init_waitqueue_head(&wq); \
 208         printk(KERN_INFO "Say: %s\n", what); \
 209         interruptible_sleep_on_timeout (&wq, HZ*3); \
 210 }
 211
 212 /*
 213  * This macro checks if usbvision is still operational. The 'usbvision'
 214  * pointer must be valid, usbvision->dev must be valid, we are not
 215  * removing the device and the device has not erred on us.
 216  */
 217 #define USBVISION_IS_OPERATIONAL(udevice) (\
 218         (udevice != NULL) && \
 219         ((udevice)->dev != NULL) && \
 220         ((udevice)->last_error == 0) && \
 221         (!(udevice)->remove_pending))
 222
 223 #define I2C_USB_ADAP_MAX        16
 224
 225 /* ----------------------------------------------------------------- */
 226 /* usbvision video structures                                        */
 227 /* ----------------------------------------------------------------- */
 228 enum ScanState {
 229         ScanState_Scanning,     /* Scanning for header */
 230         ScanState_Lines         /* Parsing lines */
 231 };
 232
 233 /* Completion states of the data parser */
 234 enum ParseState {
 235         ParseState_Continue,    /* Just parse next item */
 236         ParseState_NextFrame,   /* Frame done, send it to V4L */
 237         ParseState_Out,         /* Not enough data for frame */
 238         ParseState_EndParse     /* End parsing */
 239 };
 240
 241 enum FrameState {
 242         FrameState_Unused,      /* Unused (no MCAPTURE) */
 243         FrameState_Ready,       /* Ready to start grabbing */
 244         FrameState_Grabbing,    /* In the process of being grabbed into */
 245         FrameState_Done,        /* Finished grabbing, but not been synced yet */
 246         FrameState_DoneHold,    /* Are syncing or reading */
 247         FrameState_Error,       /* Something bad happened while processing */
 248 };
 249
 250 /* stream states */
 251 enum StreamState {
 252         Stream_Off,             /* Driver streaming is completely OFF */
 253         Stream_Idle,            /* Driver streaming is ready to be put ON by the application */
 254         Stream_Interrupt,       /* Driver streaming must be interrupted */
 255         Stream_On,              /* Driver streaming is put ON by the application */
 256 };
 257
 258 enum IsocState {
 259         IsocState_InFrame,      /* Isoc packet is member of frame */
 260         IsocState_NoFrame,      /* Isoc packet is not member of any frame */
 261 };
 262
 263 struct usb_device;
 264
 265 struct usbvision_sbuf {
 266         char *data;
 267         struct urb *urb;
 268 };
 269
 270 #define USBVISION_MAGIC_1                       0x55
 271 #define USBVISION_MAGIC_2                       0xAA
 272 #define USBVISION_HEADER_LENGTH                 0x0c
 273 #define USBVISION_SAA7111_ADDR                  0x48
 274 #define USBVISION_SAA7113_ADDR                  0x4a
 275 #define USBVISION_IIC_LRACK                     0x20
 276 #define USBVISION_IIC_LRNACK                    0x30
 277 #define USBVISION_FRAME_FORMAT_PARAM_INTRA      (1<<7)
 278
 279 struct usbvision_v4l2_format_st {
 280         int             supported;
 281         int             bytes_per_pixel;
 282         int             depth;
 283         int             format;
 284         char            *desc;
 285 };
 286 #define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format)
 287
 288 struct usbvision_frame_header {
 289         unsigned char magic_1;                          /* 0 magic */
 290         unsigned char magic_2;                          /* 1  magic */
 291         unsigned char headerLength;                     /* 2 */
 292         unsigned char frameNum;                         /* 3 */
 293         unsigned char framePhase;                       /* 4 */
 294         unsigned char frameLatency;                     /* 5 */
 295         unsigned char dataFormat;                       /* 6 */
 296         unsigned char formatParam;                      /* 7 */
 297         unsigned char frameWidthLo;                     /* 8 */
 298         unsigned char frameWidthHi;                     /* 9 */
 299         unsigned char frameHeightLo;                    /* 10 */
 300         unsigned char frameHeightHi;                    /* 11 */
 301         __u16 frameWidth;                               /* 8 - 9 after endian correction*/
 302         __u16 frameHeight;                              /* 10 - 11 after endian correction*/
 303 };
 304
 305 /* tvnorms */
 306 struct usbvision_tvnorm {
 307         char *name;
 308         v4l2_std_id id;
 309         /* mode for saa7113h */
 310         int mode;
 311 };
 312
 313 struct usbvision_frame {
 314         char *data;                                     /* Frame buffer */
 315         struct usbvision_frame_header isocHeader;       /* Header from stream */
 316
 317         int width;                                      /* Width application is expecting */
 318         int height;                                     /* Height */
 319         int index;                                      /* Frame index */
 320         int frmwidth;                                   /* Width the frame actually is */
 321         int frmheight;                                  /* Height */
 322
 323         volatile int grabstate;                         /* State of grabbing */
 324         int scanstate;                                  /* State of scanning */
 325
 326         struct list_head frame;
 327
 328         int curline;                                    /* Line of frame we're working on */
 329
 330         long scanlength;                                /* uncompressed, raw data length of frame */
 331         long bytes_read;                                /* amount of scanlength that has been read from data */
 332         struct usbvision_v4l2_format_st v4l2_format;    /* format the user needs*/
 333         int v4l2_linesize;                              /* bytes for one videoline*/
 334         struct timeval timestamp;
 335         int sequence;                                   // How many video frames we send to user
 336 };
 337
 338 #define CODEC_SAA7113   7113
 339 #define CODEC_SAA7111   7111
 340 #define BRIDGE_NT1003   1003
 341 #define BRIDGE_NT1004   1004
 342 #define BRIDGE_NT1005   1005
 343
 344 struct usbvision_device_data_st {
 345         __u64 VideoNorm;
 346         const char *ModelString;
 347         int Interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */
 348         __u16 Codec;
 349         unsigned VideoChannels:3;
 350         unsigned AudioChannels:2;
 351         unsigned Radio:1;
 352         unsigned vbi:1;
 353         unsigned Tuner:1;
 354         unsigned Vin_Reg1_override:1;   /* Override default value with */
 355         unsigned Vin_Reg2_override:1;   /* Vin_Reg1, Vin_Reg2, etc. */
 356         unsigned Dvi_yuv_override:1;
 357         __u8 Vin_Reg1;
 358         __u8 Vin_Reg2;
 359         __u8 Dvi_yuv;
 360         __u8 TunerType;
 361         __s16 X_Offset;
 362         __s16 Y_Offset;
 363 };
 364
 365 /* Declared on usbvision-cards.c */
 366 extern struct usbvision_device_data_st usbvision_device_data[];
 367 extern struct usb_device_id usbvision_table[];
 368
 369 struct usb_usbvision {
 370         struct video_device *vdev;                                      /* Video Device */
 371         struct video_device *rdev;                                      /* Radio Device */
 372         struct video_device *vbi;                                       /* VBI Device   */
 373
 374         /* i2c Declaration Section*/
 375         struct i2c_adapter i2c_adap;
 376         struct i2c_client i2c_client;
 377
 378         struct urb *ctrlUrb;
 379         unsigned char ctrlUrbBuffer[8];
 380         int ctrlUrbBusy;
 381         struct usb_ctrlrequest ctrlUrbSetup;
 382         wait_queue_head_t ctrlUrb_wq;                                   // Processes waiting
 383         struct semaphore ctrlUrbLock;
 384
 385         /* configuration part */
 386         int have_tuner;
 387         int tuner_type;
 388         int tuner_addr;
 389         int bridgeType;                                                 // NT1003, NT1004, NT1005
 390         int channel;
 391         int radio;
 392         int video_inputs;                                               // # of inputs
 393         unsigned long freq;
 394         int AudioMute;
 395         int AudioChannel;
 396         int isocMode;                                                   // format of video data for the usb isoc-transfer
 397         unsigned int nr;                                                // Number of the device
 398
 399         /* Device structure */
 400         struct usb_device *dev;
 401         /* usb transfer */
 402         int num_alt;            /* Number of alternative settings */
 403         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 404         unsigned char iface;                                            /* Video interface number */
 405         unsigned char ifaceAlt;                 /* Alt settings */
 406         unsigned char Vin_Reg2_Preset;
 407         struct semaphore lock;
 408         struct timer_list powerOffTimer;
 409         struct work_struct powerOffWork;
 410         int power;                                                      /* is the device powered on? */
 411         int user;                                                       /* user count for exclusive use */
 412         int initialized;                                                /* Had we already sent init sequence? */
 413         int DevModel;                                                   /* What type of USBVISION device we got? */
 414         enum StreamState streaming;                                     /* Are we streaming Isochronous? */
 415         int last_error;                                                 /* What calamity struck us? */
 416         int curwidth;                                                   /* width of the frame the device is currently set to*/
 417         int curheight;                                                  /* height of the frame the device is currently set to*/
 418         int stretch_width;                                              /* stretch-factor for frame width (from usb to screen)*/
 419         int stretch_height;                                             /* stretch-factor for frame height (from usb to screen)*/
 420         char *fbuf;                                                     /* Videodev buffer area for mmap*/
 421         int max_frame_size;                                             /* Bytes in one video frame */
 422         int fbuf_size;                                                  /* Videodev buffer size */
 423         spinlock_t queue_lock;                                          /* spinlock for protecting mods on inqueue and outqueue */
 424         struct list_head inqueue, outqueue;                             /* queued frame list and ready to dequeue frame list */
 425         wait_queue_head_t wait_frame;                                   /* Processes waiting */
 426         wait_queue_head_t wait_stream;                                  /* Processes waiting */
 427         struct usbvision_frame *curFrame;                               // pointer to current frame, set by usbvision_find_header
 428         struct usbvision_frame frame[USBVISION_NUMFRAMES];              // frame buffer
 429         int num_frames;                                                 // number of frames allocated
 430         struct usbvision_sbuf sbuf[USBVISION_NUMSBUF];                  // S buffering
 431         volatile int remove_pending;                                    /* If set then about to exit */
 432
 433         /* Scratch space from the Isochronous Pipe.*/
 434         unsigned char *scratch;
 435         int scratch_read_ptr;
 436         int scratch_write_ptr;
 437         int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
 438         int scratch_headermarker_read_ptr;
 439         int scratch_headermarker_write_ptr;
 440         enum IsocState isocstate;
 441         struct usbvision_v4l2_format_st palette;
 442
 443         struct v4l2_capability vcap;                                    /* Video capabilities */
 444         unsigned int ctl_input;                                         /* selected input */
 445         struct usbvision_tvnorm *tvnorm;                                /* selected tv norm */
 446         unsigned char video_endp;                                       /* 0x82 for USBVISION devices based */
 447
 448         // Decompression stuff:
 449         unsigned char *IntraFrameBuffer;                                /* Buffer for reference frame */
 450         int BlockPos;                                                   //for test only
 451         int requestIntra;                                               // 0 = normal; 1 = intra frame is requested;
 452         int lastIsocFrameNum;                                           // check for lost isoc frames
 453         int isocPacketSize;                                             // need to calculate usedBandwidth
 454         int usedBandwidth;                                              // used bandwidth 0-100%, need to set comprLevel
 455         int comprLevel;                                                 // How strong (100) or weak (0) is compression
 456         int lastComprLevel;                                             // How strong (100) or weak (0) was compression
 457         int usb_bandwidth;                                              /* Mbit/s */
 458
 459         /* Statistics that can be overlayed on the screen */
 460         unsigned long isocUrbCount;                     // How many URBs we received so far
 461         unsigned long urb_length;                       /* Length of last URB */
 462         unsigned long isocDataCount;                    /* How many bytes we received */
 463         unsigned long header_count;                     /* How many frame headers we found */
 464         unsigned long scratch_ovf_count;                /* How many times we overflowed scratch */
 465         unsigned long isocSkipCount;                    /* How many empty ISO packets received */
 466         unsigned long isocErrCount;                     /* How many bad ISO packets received */
 467         unsigned long isocPacketCount;                  // How many packets we totally got
 468         unsigned long timeInIrq;                        // How long do we need for interrupt
 469         int isocMeasureBandwidthCount;
 470         int frame_num;                                  // How many video frames we send to user
 471         int maxStripLen;                                // How big is the biggest strip
 472         int comprBlockPos;
 473         int stripLenErrors;                             // How many times was BlockPos greater than StripLen
 474         int stripMagicErrors;
 475         int stripLineNumberErrors;
 476         int ComprBlockTypes[4];
 477 };
 478
 479
 480 /* --------------------------------------------------------------- */
 481 /* defined in usbvision-i2c.c                                      */
 482 /* i2c-algo-usb declaration                                        */
 483 /* --------------------------------------------------------------- */
 484
 485 int usbvision_i2c_usb_del_bus(struct i2c_adapter *);
 486
 487
 488 /* ----------------------------------------------------------------------- */
 489 /* usbvision specific I2C functions                                        */
 490 /* ----------------------------------------------------------------------- */
 491 int usbvision_init_i2c(struct usb_usbvision *usbvision);
 492 void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg);
 493
 494 /* defined in usbvision-core.c                                      */
 495 int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
 496 int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
 497                         unsigned char value);
 498
 499 int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames);
 500 void usbvision_frames_free(struct usb_usbvision *usbvision);
 501 int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
 502 void usbvision_scratch_free(struct usb_usbvision *usbvision);
 503 int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
 504 void usbvision_decompress_free(struct usb_usbvision *usbvision);
 505
 506 int usbvision_setup(struct usb_usbvision *usbvision,int format);
 507 int usbvision_init_isoc(struct usb_usbvision *usbvision);
 508 int usbvision_restart_isoc(struct usb_usbvision *usbvision);
 509 void usbvision_stop_isoc(struct usb_usbvision *usbvision);
 510 int usbvision_set_alternate(struct usb_usbvision *dev);
 511
 512 int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel);
 513 int usbvision_audio_off(struct usb_usbvision *usbvision);
 514
 515 int usbvision_begin_streaming(struct usb_usbvision *usbvision);
 516 void usbvision_empty_framequeues(struct usb_usbvision *dev);
 517 int usbvision_stream_interrupt(struct usb_usbvision *dev);
 518
 519 int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
 520 int usbvision_set_input(struct usb_usbvision *usbvision);
 521 int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
 522
 523 void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision);
 524 void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision);
 525 void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision);
 526 int usbvision_power_off(struct usb_usbvision *usbvision);
 527 int usbvision_power_on(struct usb_usbvision *usbvision);
 528
 529 #endif                                                                  /* __LINUX_USBVISION_H */
 530
 531 /*
 532  * Overrides for Emacs so that we follow Linus's tabbing style.
 533  * ---------------------------------------------------------------------------
 534  * Local variables:
 535  * c-basic-offset: 8
 536  * End:
 537  */