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
 150 #define USBVISION_NUM_HEADERMARKER      20
 151 #define USBVISION_NUMFRAMES             3  /* Maximum number of frames an application can get */
 152 #define USBVISION_NUMSBUF               2 /* Dimensioning the USB S buffering */
 153
 154 #define USBVISION_POWEROFF_TIME         3 * (HZ)                // 3 seconds
 155
 156
 157 #define FRAMERATE_MIN   0
 158 #define FRAMERATE_MAX   31
 159
 160 enum {
 161         ISOC_MODE_YUV422 = 0x03,
 162         ISOC_MODE_YUV420 = 0x14,
 163         ISOC_MODE_COMPRESS = 0x60,
 164 };
 165
 166 /* This macro restricts an int variable to an inclusive range */
 167 #define RESTRICT_TO_RANGE(v,mi,ma) { if ((v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); }
 168
 169 /*
 170  * We use macros to do YUV -> RGB conversion because this is
 171  * very important for speed and totally unimportant for size.
 172  *
 173  * YUV -> RGB Conversion
 174  * ---------------------
 175  *
 176  * B = 1.164*(Y-16)                 + 2.018*(V-128)
 177  * G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128)
 178  * R = 1.164*(Y-16) + 1.596*(U-128)
 179  *
 180  * If you fancy integer arithmetics (as you should), hear this:
 181  *
 182  * 65536*B = 76284*(Y-16)                 + 132252*(V-128)
 183  * 65536*G = 76284*(Y-16) -  53281*(U-128) -  25625*(V-128)
 184  * 65536*R = 76284*(Y-16) + 104595*(U-128)
 185  *
 186  * Make sure the output values are within [0..255] range.
 187  */
 188 #define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x)))
 189 #define YUV_TO_RGB_BY_THE_BOOK(my,mu,mv,mr,mg,mb) { \
 190     int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \
 191     mm_y = (my) - 16;  \
 192     mm_u = (mu) - 128; \
 193     mm_v = (mv) - 128; \
 194     mm_yc= mm_y * 76284; \
 195     mm_b = (mm_yc               + 132252*mm_v   ) >> 16; \
 196     mm_g = (mm_yc -  53281*mm_u -  25625*mm_v   ) >> 16; \
 197     mm_r = (mm_yc + 104595*mm_u                 ) >> 16; \
 198     mb = LIMIT_RGB(mm_b); \
 199     mg = LIMIT_RGB(mm_g); \
 200     mr = LIMIT_RGB(mm_r); \
 201 }
 202
 203 /* Debugging aid */
 204 #define USBVISION_SAY_AND_WAIT(what) { \
 205         wait_queue_head_t wq; \
 206         init_waitqueue_head(&wq); \
 207         printk(KERN_INFO "Say: %s\n", what); \
 208         interruptible_sleep_on_timeout (&wq, HZ*3); \
 209 }
 210
 211 /*
 212  * This macro checks if usbvision is still operational. The 'usbvision'
 213  * pointer must be valid, usbvision->dev must be valid, we are not
 214  * removing the device and the device has not erred on us.
 215  */
 216 #define USBVISION_IS_OPERATIONAL(udevice) (\
 217         (udevice != NULL) && \
 218         ((udevice)->dev != NULL) && \
 219         ((udevice)->last_error == 0) && \
 220         (!(udevice)->remove_pending))
 221
 222 #define I2C_USB_ADAP_MAX        16
 223
 224 #define USBVISION_NORMS (V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_M)
 225
 226 /* ----------------------------------------------------------------- */
 227 /* usbvision video structures                                        */
 228 /* ----------------------------------------------------------------- */
 229 enum ScanState {
 230         ScanState_Scanning,     /* Scanning for header */
 231         ScanState_Lines         /* Parsing lines */
 232 };
 233
 234 /* Completion states of the data parser */
 235 enum ParseState {
 236         ParseState_Continue,    /* Just parse next item */
 237         ParseState_NextFrame,   /* Frame done, send it to V4L */
 238         ParseState_Out,         /* Not enough data for frame */
 239         ParseState_EndParse     /* End parsing */
 240 };
 241
 242 enum FrameState {
 243         FrameState_Unused,      /* Unused (no MCAPTURE) */
 244         FrameState_Ready,       /* Ready to start grabbing */
 245         FrameState_Grabbing,    /* In the process of being grabbed into */
 246         FrameState_Done,        /* Finished grabbing, but not been synced yet */
 247         FrameState_DoneHold,    /* Are syncing or reading */
 248         FrameState_Error,       /* Something bad happened while processing */
 249 };
 250
 251 /* stream states */
 252 enum StreamState {
 253         Stream_Off,             /* Driver streaming is completely OFF */
 254         Stream_Idle,            /* Driver streaming is ready to be put ON by the application */
 255         Stream_Interrupt,       /* Driver streaming must be interrupted */
 256         Stream_On,              /* Driver streaming is put ON by the application */
 257 };
 258
 259 enum IsocState {
 260         IsocState_InFrame,      /* Isoc packet is member of frame */
 261         IsocState_NoFrame,      /* Isoc packet is not member of any frame */
 262 };
 263
 264 struct usb_device;
 265
 266 struct usbvision_sbuf {
 267         char *data;
 268         struct urb *urb;
 269 };
 270
 271 #define USBVISION_MAGIC_1                       0x55
 272 #define USBVISION_MAGIC_2                       0xAA
 273 #define USBVISION_HEADER_LENGTH                 0x0c
 274 #define USBVISION_SAA7111_ADDR                  0x48
 275 #define USBVISION_SAA7113_ADDR                  0x4a
 276 #define USBVISION_IIC_LRACK                     0x20
 277 #define USBVISION_IIC_LRNACK                    0x30
 278 #define USBVISION_FRAME_FORMAT_PARAM_INTRA      (1<<7)
 279
 280 struct usbvision_v4l2_format_st {
 281         int             supported;
 282         int             bytes_per_pixel;
 283         int             depth;
 284         int             format;
 285         char            *desc;
 286 };
 287 #define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format)
 288
 289 struct usbvision_frame_header {
 290         unsigned char magic_1;                          /* 0 magic */
 291         unsigned char magic_2;                          /* 1  magic */
 292         unsigned char headerLength;                     /* 2 */
 293         unsigned char frameNum;                         /* 3 */
 294         unsigned char framePhase;                       /* 4 */
 295         unsigned char frameLatency;                     /* 5 */
 296         unsigned char dataFormat;                       /* 6 */
 297         unsigned char formatParam;                      /* 7 */
 298         unsigned char frameWidthLo;                     /* 8 */
 299         unsigned char frameWidthHi;                     /* 9 */
 300         unsigned char frameHeightLo;                    /* 10 */
 301         unsigned char frameHeightHi;                    /* 11 */
 302         __u16 frameWidth;                               /* 8 - 9 after endian correction*/
 303         __u16 frameHeight;                              /* 10 - 11 after endian correction*/
 304 };
 305
 306 struct usbvision_frame {
 307         char *data;                                     /* Frame buffer */
 308         struct usbvision_frame_header isocHeader;       /* Header from stream */
 309
 310         int width;                                      /* Width application is expecting */
 311         int height;                                     /* Height */
 312         int index;                                      /* Frame index */
 313         int frmwidth;                                   /* Width the frame actually is */
 314         int frmheight;                                  /* Height */
 315
 316         volatile int grabstate;                         /* State of grabbing */
 317         int scanstate;                                  /* State of scanning */
 318
 319         struct list_head frame;
 320
 321         int curline;                                    /* Line of frame we're working on */
 322
 323         long scanlength;                                /* uncompressed, raw data length of frame */
 324         long bytes_read;                                /* amount of scanlength that has been read from data */
 325         struct usbvision_v4l2_format_st v4l2_format;    /* format the user needs*/
 326         int v4l2_linesize;                              /* bytes for one videoline*/
 327         struct timeval timestamp;
 328         int sequence;                                   // How many video frames we send to user
 329 };
 330
 331 #define CODEC_SAA7113   7113
 332 #define CODEC_SAA7111   7111
 333 #define BRIDGE_NT1003   1003
 334 #define BRIDGE_NT1004   1004
 335 #define BRIDGE_NT1005   1005
 336
 337 struct usbvision_device_data_st {
 338         __u64 VideoNorm;
 339         const char *ModelString;
 340         int Interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */
 341         __u16 Codec;
 342         unsigned VideoChannels:3;
 343         unsigned AudioChannels:2;
 344         unsigned Radio:1;
 345         unsigned vbi:1;
 346         unsigned Tuner:1;
 347         unsigned Vin_Reg1_override:1;   /* Override default value with */
 348         unsigned Vin_Reg2_override:1;   /* Vin_Reg1, Vin_Reg2, etc. */
 349         unsigned Dvi_yuv_override:1;
 350         __u8 Vin_Reg1;
 351         __u8 Vin_Reg2;
 352         __u8 Dvi_yuv;
 353         __u8 TunerType;
 354         __s16 X_Offset;
 355         __s16 Y_Offset;
 356 };
 357
 358 /* Declared on usbvision-cards.c */
 359 extern struct usbvision_device_data_st usbvision_device_data[];
 360 extern struct usb_device_id usbvision_table[];
 361
 362 struct usb_usbvision {
 363         struct video_device *vdev;                                      /* Video Device */
 364         struct video_device *rdev;                                      /* Radio Device */
 365         struct video_device *vbi;                                       /* VBI Device   */
 366
 367         /* i2c Declaration Section*/
 368         struct i2c_adapter i2c_adap;
 369         struct i2c_client i2c_client;
 370
 371         struct urb *ctrlUrb;
 372         unsigned char ctrlUrbBuffer[8];
 373         int ctrlUrbBusy;
 374         struct usb_ctrlrequest ctrlUrbSetup;
 375         wait_queue_head_t ctrlUrb_wq;                                   // Processes waiting
 376         struct semaphore ctrlUrbLock;
 377
 378         /* configuration part */
 379         int have_tuner;
 380         int tuner_type;
 381         int tuner_addr;
 382         int bridgeType;                                                 // NT1003, NT1004, NT1005
 383         int radio;
 384         int video_inputs;                                               // # of inputs
 385         unsigned long freq;
 386         int AudioMute;
 387         int AudioChannel;
 388         int isocMode;                                                   // format of video data for the usb isoc-transfer
 389         unsigned int nr;                                                // Number of the device
 390
 391         /* Device structure */
 392         struct usb_device *dev;
 393         /* usb transfer */
 394         int num_alt;            /* Number of alternative settings */
 395         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 396         unsigned char iface;                                            /* Video interface number */
 397         unsigned char ifaceAlt;                 /* Alt settings */
 398         unsigned char Vin_Reg2_Preset;
 399         struct semaphore lock;
 400         struct timer_list powerOffTimer;
 401         struct work_struct powerOffWork;
 402         int power;                                                      /* is the device powered on? */
 403         int user;                                                       /* user count for exclusive use */
 404         int initialized;                                                /* Had we already sent init sequence? */
 405         int DevModel;                                                   /* What type of USBVISION device we got? */
 406         enum StreamState streaming;                                     /* Are we streaming Isochronous? */
 407         int last_error;                                                 /* What calamity struck us? */
 408         int curwidth;                                                   /* width of the frame the device is currently set to*/
 409         int curheight;                                                  /* height of the frame the device is currently set to*/
 410         int stretch_width;                                              /* stretch-factor for frame width (from usb to screen)*/
 411         int stretch_height;                                             /* stretch-factor for frame height (from usb to screen)*/
 412         char *fbuf;                                                     /* Videodev buffer area for mmap*/
 413         int max_frame_size;                                             /* Bytes in one video frame */
 414         int fbuf_size;                                                  /* Videodev buffer size */
 415         spinlock_t queue_lock;                                          /* spinlock for protecting mods on inqueue and outqueue */
 416         struct list_head inqueue, outqueue;                             /* queued frame list and ready to dequeue frame list */
 417         wait_queue_head_t wait_frame;                                   /* Processes waiting */
 418         wait_queue_head_t wait_stream;                                  /* Processes waiting */
 419         struct usbvision_frame *curFrame;                               // pointer to current frame, set by usbvision_find_header
 420         struct usbvision_frame frame[USBVISION_NUMFRAMES];              // frame buffer
 421         int num_frames;                                                 // number of frames allocated
 422         struct usbvision_sbuf sbuf[USBVISION_NUMSBUF];                  // S buffering
 423         volatile int remove_pending;                                    /* If set then about to exit */
 424
 425         /* Scratch space from the Isochronous Pipe.*/
 426         unsigned char *scratch;
 427         int scratch_read_ptr;
 428         int scratch_write_ptr;
 429         int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
 430         int scratch_headermarker_read_ptr;
 431         int scratch_headermarker_write_ptr;
 432         enum IsocState isocstate;
 433         struct usbvision_v4l2_format_st palette;
 434
 435         struct v4l2_capability vcap;                                    /* Video capabilities */
 436         unsigned int ctl_input;                                         /* selected input */
 437         v4l2_std_id tvnormId;                                           /* selected tv norm */
 438         unsigned char video_endp;                                       /* 0x82 for USBVISION devices based */
 439
 440         // Decompression stuff:
 441         unsigned char *IntraFrameBuffer;                                /* Buffer for reference frame */
 442         int BlockPos;                                                   //for test only
 443         int requestIntra;                                               // 0 = normal; 1 = intra frame is requested;
 444         int lastIsocFrameNum;                                           // check for lost isoc frames
 445         int isocPacketSize;                                             // need to calculate usedBandwidth
 446         int usedBandwidth;                                              // used bandwidth 0-100%, need to set comprLevel
 447         int comprLevel;                                                 // How strong (100) or weak (0) is compression
 448         int lastComprLevel;                                             // How strong (100) or weak (0) was compression
 449         int usb_bandwidth;                                              /* Mbit/s */
 450
 451         /* Statistics that can be overlayed on the screen */
 452         unsigned long isocUrbCount;                     // How many URBs we received so far
 453         unsigned long urb_length;                       /* Length of last URB */
 454         unsigned long isocDataCount;                    /* How many bytes we received */
 455         unsigned long header_count;                     /* How many frame headers we found */
 456         unsigned long scratch_ovf_count;                /* How many times we overflowed scratch */
 457         unsigned long isocSkipCount;                    /* How many empty ISO packets received */
 458         unsigned long isocErrCount;                     /* How many bad ISO packets received */
 459         unsigned long isocPacketCount;                  // How many packets we totally got
 460         unsigned long timeInIrq;                        // How long do we need for interrupt
 461         int isocMeasureBandwidthCount;
 462         int frame_num;                                  // How many video frames we send to user
 463         int maxStripLen;                                // How big is the biggest strip
 464         int comprBlockPos;
 465         int stripLenErrors;                             // How many times was BlockPos greater than StripLen
 466         int stripMagicErrors;
 467         int stripLineNumberErrors;
 468         int ComprBlockTypes[4];
 469 };
 470
 471
 472 /* --------------------------------------------------------------- */
 473 /* defined in usbvision-i2c.c                                      */
 474 /* i2c-algo-usb declaration                                        */
 475 /* --------------------------------------------------------------- */
 476
 477 /* ----------------------------------------------------------------------- */
 478 /* usbvision specific I2C functions                                        */
 479 /* ----------------------------------------------------------------------- */
 480 int usbvision_i2c_register(struct usb_usbvision *usbvision);
 481 int usbvision_i2c_unregister(struct usb_usbvision *usbvision);
 482 void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg);
 483
 484 /* defined in usbvision-core.c                                      */
 485 int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
 486 int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
 487                         unsigned char value);
 488
 489 int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames);
 490 void usbvision_frames_free(struct usb_usbvision *usbvision);
 491 int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
 492 void usbvision_scratch_free(struct usb_usbvision *usbvision);
 493 int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
 494 void usbvision_decompress_free(struct usb_usbvision *usbvision);
 495
 496 int usbvision_setup(struct usb_usbvision *usbvision,int format);
 497 int usbvision_init_isoc(struct usb_usbvision *usbvision);
 498 int usbvision_restart_isoc(struct usb_usbvision *usbvision);
 499 void usbvision_stop_isoc(struct usb_usbvision *usbvision);
 500 int usbvision_set_alternate(struct usb_usbvision *dev);
 501
 502 int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel);
 503 int usbvision_audio_off(struct usb_usbvision *usbvision);
 504
 505 int usbvision_begin_streaming(struct usb_usbvision *usbvision);
 506 void usbvision_empty_framequeues(struct usb_usbvision *dev);
 507 int usbvision_stream_interrupt(struct usb_usbvision *dev);
 508
 509 int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
 510 int usbvision_set_input(struct usb_usbvision *usbvision);
 511 int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
 512
 513 void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision);
 514 void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision);
 515 void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision);
 516 int usbvision_power_off(struct usb_usbvision *usbvision);
 517 int usbvision_power_on(struct usb_usbvision *usbvision);
 518
 519 #endif                                                                  /* __LINUX_USBVISION_H */
 520
 521 /*
 522  * Overrides for Emacs so that we follow Linus's tabbing style.
 523  * ---------------------------------------------------------------------------
 524  * Local variables:
 525  * c-basic-offset: 8
 526  * End:
 527  */