R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * * |
| 3 | * easycap_main.c * |
| 4 | * * |
| 5 | * Video driver for EasyCAP USB2.0 Video Capture Device DC60 * |
| 6 | * * |
| 7 | * * |
| 8 | ******************************************************************************/ |
| 9 | /* |
| 10 | * |
| 11 | * Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org> |
| 12 | * |
| 13 | * |
| 14 | * This is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * The software is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this software; if not, write to the Free Software |
| 26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 27 | * |
| 28 | */ |
| 29 | /*****************************************************************************/ |
| 30 | |
| 31 | #include "easycap.h" |
| 32 | #include "easycap_standard.h" |
| 33 | |
| 34 | int easycap_debug; |
| 35 | module_param(easycap_debug, int, S_IRUGO | S_IWUSR); |
| 36 | |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 37 | /*---------------------------------------------------------------------------*/ |
| 38 | /* |
| 39 | * PARAMETERS APPLICABLE TO ENTIRE DRIVER, I.E. BOTH VIDEO AND AUDIO |
| 40 | */ |
| 41 | /*---------------------------------------------------------------------------*/ |
| 42 | struct usb_device_id easycap_usb_device_id_table[] = { |
| 43 | { USB_DEVICE(USB_EASYCAP_VENDOR_ID, USB_EASYCAP_PRODUCT_ID) }, |
| 44 | { } |
| 45 | }; |
| 46 | MODULE_DEVICE_TABLE(usb, easycap_usb_device_id_table); |
| 47 | struct usb_driver easycap_usb_driver = { |
| 48 | .name = "easycap", |
| 49 | .id_table = easycap_usb_device_id_table, |
| 50 | .probe = easycap_usb_probe, |
| 51 | .disconnect = easycap_usb_disconnect, |
| 52 | }; |
| 53 | /*---------------------------------------------------------------------------*/ |
| 54 | /* |
| 55 | * PARAMETERS USED WHEN REGISTERING THE VIDEO INTERFACE |
| 56 | * |
| 57 | * NOTE: SOME KERNELS IGNORE usb_class_driver.minor_base, AS MENTIONED BY |
| 58 | * CORBET ET AL. "LINUX DEVICE DRIVERS", 3rd EDITION, PAGE 253. |
| 59 | * THIS IS THE CASE FOR OpenSUSE. |
| 60 | */ |
| 61 | /*---------------------------------------------------------------------------*/ |
| 62 | const struct file_operations easycap_fops = { |
Frederic Weisbecker | 5ef0683 | 2010-08-09 03:28:40 +0200 | [diff] [blame] | 63 | .owner = THIS_MODULE, |
| 64 | .open = easycap_open, |
| 65 | .release = easycap_release, |
| 66 | .unlocked_ioctl = easycap_ioctl, |
| 67 | .poll = easycap_poll, |
| 68 | .mmap = easycap_mmap, |
| 69 | .llseek = no_llseek, |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 70 | }; |
| 71 | struct vm_operations_struct easycap_vm_ops = { |
| 72 | .open = easycap_vma_open, |
| 73 | .close = easycap_vma_close, |
| 74 | .fault = easycap_vma_fault, |
| 75 | }; |
| 76 | struct usb_class_driver easycap_class = { |
| 77 | .name = "usb/easycap%d", |
| 78 | .fops = &easycap_fops, |
| 79 | .minor_base = USB_SKEL_MINOR_BASE, |
| 80 | }; |
| 81 | |
| 82 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 83 | #if defined(EASYCAP_IS_VIDEODEV_CLIENT) |
| 84 | #if defined(EASYCAP_NEEDS_V4L2_FOPS) |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 85 | const struct v4l2_file_operations v4l2_fops = { |
Frederic Weisbecker | 5ef0683 | 2010-08-09 03:28:40 +0200 | [diff] [blame] | 86 | .owner = THIS_MODULE, |
| 87 | .open = easycap_open_noinode, |
| 88 | .release = easycap_release_noinode, |
| 89 | .unlocked_ioctl = easycap_ioctl, |
| 90 | .poll = easycap_poll, |
| 91 | .mmap = easycap_mmap, |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 92 | }; |
| 93 | #endif /*EASYCAP_NEEDS_V4L2_FOPS*/ |
| 94 | int video_device_many /*=0*/; |
| 95 | struct video_device *pvideo_array[VIDEO_DEVICE_MANY], *pvideo_device; |
| 96 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 97 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 98 | |
| 99 | /*--------------------------------------------------------------------------*/ |
| 100 | /* |
| 101 | * PARAMETERS USED WHEN REGISTERING THE AUDIO INTERFACE |
| 102 | */ |
| 103 | /*--------------------------------------------------------------------------*/ |
| 104 | const struct file_operations easysnd_fops = { |
Frederic Weisbecker | 5ef0683 | 2010-08-09 03:28:40 +0200 | [diff] [blame] | 105 | .owner = THIS_MODULE, |
| 106 | .open = easysnd_open, |
| 107 | .release = easysnd_release, |
| 108 | .unlocked_ioctl = easysnd_ioctl, |
| 109 | .read = easysnd_read, |
| 110 | .llseek = no_llseek, |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 111 | }; |
| 112 | struct usb_class_driver easysnd_class = { |
| 113 | .name = "usb/easysnd%d", |
| 114 | .fops = &easysnd_fops, |
| 115 | .minor_base = USB_SKEL_MINOR_BASE, |
| 116 | }; |
| 117 | /****************************************************************************/ |
| 118 | /*--------------------------------------------------------------------------*/ |
| 119 | /* |
| 120 | * IT IS NOT APPROPRIATE FOR easycap_open() TO SUBMIT THE VIDEO URBS HERE, |
| 121 | * BECAUSE THERE WILL ALWAYS BE SUBSEQUENT NEGOTIATION OF TV STANDARD AND |
| 122 | * FORMAT BY IOCTL AND IT IS INADVISABLE TO HAVE THE URBS RUNNING WHILE |
| 123 | * REGISTERS OF THE SA7113H ARE BEING MANIPULATED. |
| 124 | * |
| 125 | * THE SUBMISSION OF VIDEO URBS IS THEREFORE DELAYED UNTIL THE IOCTL COMMAND |
| 126 | * STREAMON IS RECEIVED. |
| 127 | */ |
| 128 | /*--------------------------------------------------------------------------*/ |
| 129 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 130 | #if defined(EASYCAP_IS_VIDEODEV_CLIENT) |
| 131 | int |
| 132 | easycap_open_noinode(struct file *file) |
| 133 | { |
| 134 | return easycap_open((struct inode *)NULL, file); |
| 135 | } |
| 136 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 137 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 138 | int |
| 139 | easycap_open(struct inode *inode, struct file *file) |
| 140 | { |
| 141 | #if (!defined(EASYCAP_IS_VIDEODEV_CLIENT)) |
| 142 | struct usb_interface *pusb_interface; |
| 143 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 144 | struct usb_device *p; |
| 145 | struct easycap *peasycap; |
| 146 | int i, k, m, rc; |
| 147 | |
| 148 | JOT(4, "\n"); |
| 149 | SAY("==========OPEN=========\n"); |
| 150 | |
| 151 | peasycap = (struct easycap *)NULL; |
| 152 | #if (!defined(EASYCAP_IS_VIDEODEV_CLIENT)) |
| 153 | if ((struct inode *)NULL == inode) { |
| 154 | SAY("ERROR: inode is NULL.\n"); |
| 155 | return -EFAULT; |
| 156 | } |
| 157 | pusb_interface = usb_find_interface(&easycap_usb_driver, iminor(inode)); |
| 158 | if (!pusb_interface) { |
| 159 | SAY("ERROR: pusb_interface is NULL.\n"); |
| 160 | return -EFAULT; |
| 161 | } |
| 162 | peasycap = usb_get_intfdata(pusb_interface); |
| 163 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 164 | #else |
| 165 | for (i = 0; i < video_device_many; i++) { |
| 166 | pvideo_device = pvideo_array[i]; |
| 167 | if ((struct video_device *)NULL != pvideo_device) { |
| 168 | peasycap = (struct easycap *)video_get_drvdata(pvideo_device); |
| 169 | break; |
| 170 | } |
| 171 | } |
| 172 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 173 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 174 | if ((struct easycap *)NULL == peasycap) { |
| 175 | SAY("MISTAKE: peasycap is NULL\n"); |
| 176 | return -EFAULT; |
| 177 | } |
| 178 | file->private_data = peasycap; |
| 179 | /*---------------------------------------------------------------------------*/ |
| 180 | /* |
| 181 | * INITIALIZATION |
| 182 | */ |
| 183 | /*---------------------------------------------------------------------------*/ |
| 184 | JOT(4, "starting initialization\n"); |
| 185 | |
| 186 | for (k = 0; k < FRAME_BUFFER_MANY; k++) { |
| 187 | for (m = 0; m < FRAME_BUFFER_SIZE/PAGE_SIZE; m++) |
| 188 | memset(peasycap->frame_buffer[k][m].pgo, 0, PAGE_SIZE); |
| 189 | } |
| 190 | p = peasycap->pusb_device; |
| 191 | if ((struct usb_device *)NULL == p) { |
| 192 | SAY("ERROR: peasycap->pusb_device is NULL\n"); |
| 193 | return -EFAULT; |
| 194 | } else { |
| 195 | JOT(16, "0x%08lX=peasycap->pusb_device\n", \ |
| 196 | (long int)peasycap->pusb_device); |
| 197 | } |
| 198 | rc = wakeup_device(peasycap->pusb_device); |
| 199 | if (0 == rc) |
| 200 | JOT(8, "wakeup_device() OK\n"); |
| 201 | else { |
| 202 | SAY("ERROR: wakeup_device() returned %i\n", rc); |
| 203 | return -EFAULT; |
| 204 | } |
| 205 | rc = setup_stk(p); peasycap->input = 0; |
| 206 | if (0 == rc) |
| 207 | JOT(8, "setup_stk() OK\n"); |
| 208 | else { |
| 209 | SAY("ERROR: setup_stk() returned %i\n", rc); |
| 210 | return -EFAULT; |
| 211 | } |
| 212 | rc = setup_saa(p); |
| 213 | if (0 == rc) |
| 214 | JOT(8, "setup_saa() OK\n"); |
| 215 | else { |
| 216 | SAY("ERROR: setup_saa() returned %i\n", rc); |
| 217 | return -EFAULT; |
| 218 | } |
| 219 | rc = check_saa(p); |
| 220 | if (0 == rc) |
| 221 | JOT(8, "check_saa() OK\n"); |
| 222 | else if (-8 < rc) |
| 223 | SAY("check_saa() returned %i\n", rc); |
| 224 | else { |
| 225 | SAY("ERROR: check_saa() returned %i\n", rc); |
| 226 | return -EFAULT; |
| 227 | } |
| 228 | peasycap->standard_offset = -1; |
| 229 | /*---------------------------------------------------------------------------*/ |
| 230 | #if defined(PREFER_NTSC) |
| 231 | |
| 232 | rc = adjust_standard(peasycap, V4L2_STD_NTSC_M); |
| 233 | if (0 == rc) |
| 234 | JOT(8, "adjust_standard(.,NTSC_M) OK\n"); |
| 235 | else { |
| 236 | SAY("ERROR: adjust_standard(.,NTSC_M) returned %i\n", rc); |
| 237 | return -EFAULT; |
| 238 | } |
| 239 | rc = adjust_format(peasycap, 640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, \ |
| 240 | false); |
| 241 | if (0 <= rc) |
| 242 | JOT(8, "adjust_format(.,640,480,UYVY) OK\n"); |
| 243 | else { |
| 244 | SAY("ERROR: adjust_format(.,640,480,UYVY) returned %i\n", rc); |
| 245 | return -EFAULT; |
| 246 | } |
| 247 | |
| 248 | #else |
| 249 | |
| 250 | rc = adjust_standard(peasycap, \ |
| 251 | (V4L2_STD_PAL_B | V4L2_STD_PAL_G | V4L2_STD_PAL_H | \ |
| 252 | V4L2_STD_PAL_I | V4L2_STD_PAL_N)); |
| 253 | if (0 == rc) |
| 254 | JOT(8, "adjust_standard(.,PAL_BGHIN) OK\n"); |
| 255 | else { |
| 256 | SAY("ERROR: adjust_standard(.,PAL_BGHIN) returned %i\n", rc); |
| 257 | return -EFAULT; |
| 258 | } |
| 259 | rc = adjust_format(peasycap, 640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, \ |
| 260 | false); |
| 261 | if (0 <= rc) |
| 262 | JOT(8, "adjust_format(.,640,480,uyvy,false) OK\n"); |
| 263 | else { |
| 264 | SAY("ERROR: adjust_format(.,640,480,uyvy,false) returned %i\n", rc); |
| 265 | return -EFAULT; |
| 266 | } |
| 267 | |
| 268 | #endif /* !PREFER_NTSC*/ |
| 269 | /*---------------------------------------------------------------------------*/ |
| 270 | rc = adjust_brightness(peasycap, -8192); |
| 271 | if (0 != rc) { |
| 272 | SAY("ERROR: adjust_brightness(default) returned %i\n", rc); |
| 273 | return -EFAULT; |
| 274 | } |
| 275 | rc = adjust_contrast(peasycap, -8192); |
| 276 | if (0 != rc) { |
| 277 | SAY("ERROR: adjust_contrast(default) returned %i\n", rc); |
| 278 | return -EFAULT; |
| 279 | } |
| 280 | rc = adjust_saturation(peasycap, -8192); |
| 281 | if (0 != rc) { |
| 282 | SAY("ERROR: adjust_saturation(default) returned %i\n", rc); |
| 283 | return -EFAULT; |
| 284 | } |
| 285 | rc = adjust_hue(peasycap, -8192); |
| 286 | if (0 != rc) { |
| 287 | SAY("ERROR: adjust_hue(default) returned %i\n", rc); |
| 288 | return -EFAULT; |
| 289 | } |
| 290 | /*---------------------------------------------------------------------------*/ |
| 291 | rc = usb_set_interface(peasycap->pusb_device, peasycap->video_interface, \ |
| 292 | peasycap->video_altsetting_on); |
| 293 | if (0 == rc) |
| 294 | JOT(8, "usb_set_interface(.,%i,%i) OK\n", peasycap->video_interface, \ |
| 295 | peasycap->video_altsetting_on); |
| 296 | else { |
| 297 | SAY("ERROR: usb_set_interface() returned %i\n", rc); |
| 298 | return -EFAULT; |
| 299 | } |
| 300 | rc = start_100(p); |
| 301 | if (0 == rc) |
| 302 | JOT(8, "start_100() OK\n"); |
| 303 | else { |
| 304 | SAY("ERROR: start_100() returned %i\n", rc); |
| 305 | return -EFAULT; |
| 306 | } |
| 307 | peasycap->video_isoc_sequence = VIDEO_ISOC_BUFFER_MANY - 1; |
| 308 | peasycap->video_idle = 0; |
| 309 | peasycap->video_junk = 0; |
| 310 | for (i = 0; i < 180; i++) |
| 311 | peasycap->merit[i] = 0; |
| 312 | peasycap->video_eof = 0; |
| 313 | peasycap->audio_eof = 0; |
| 314 | |
| 315 | do_gettimeofday(&peasycap->timeval7); |
| 316 | |
| 317 | peasycap->fudge = 0; |
| 318 | |
| 319 | JOT(4, "finished initialization\n"); |
| 320 | return 0; |
| 321 | } |
| 322 | /*****************************************************************************/ |
| 323 | int |
| 324 | submit_video_urbs(struct easycap *peasycap) |
| 325 | { |
| 326 | struct data_urb *pdata_urb; |
| 327 | struct urb *purb; |
| 328 | struct list_head *plist_head; |
| 329 | int j, isbad, m, rc; |
| 330 | int isbuf; |
| 331 | |
| 332 | if ((struct list_head *)NULL == peasycap->purb_video_head) { |
| 333 | SAY("ERROR: peasycap->urb_video_head uninitialized\n"); |
| 334 | return -EFAULT; |
| 335 | } |
| 336 | if ((struct usb_device *)NULL == peasycap->pusb_device) { |
| 337 | SAY("ERROR: peasycap->pusb_device is NULL\n"); |
| 338 | return -EFAULT; |
| 339 | } |
| 340 | if (!peasycap->video_isoc_streaming) { |
| 341 | |
| 342 | |
| 343 | |
| 344 | |
| 345 | |
| 346 | |
| 347 | |
| 348 | |
| 349 | JOT(4, "submission of all video urbs\n"); |
| 350 | if (0 != ready_saa(peasycap->pusb_device)) { |
| 351 | SAY("ERROR: not ready to capture after waiting " \ |
| 352 | "one second\n"); |
| 353 | SAY("..... continuing anyway\n"); |
| 354 | } |
| 355 | isbad = 0; m = 0; |
| 356 | list_for_each(plist_head, (peasycap->purb_video_head)) { |
| 357 | pdata_urb = list_entry(plist_head, struct data_urb, list_head); |
| 358 | if (NULL != pdata_urb) { |
| 359 | purb = pdata_urb->purb; |
| 360 | if (NULL != purb) { |
| 361 | isbuf = pdata_urb->isbuf; |
| 362 | purb->interval = 1; |
| 363 | purb->dev = peasycap->pusb_device; |
| 364 | purb->pipe = \ |
| 365 | usb_rcvisocpipe(peasycap->pusb_device,\ |
| 366 | peasycap->video_endpointnumber); |
| 367 | purb->transfer_flags = URB_ISO_ASAP; |
| 368 | purb->transfer_buffer = \ |
| 369 | peasycap->video_isoc_buffer[isbuf].pgo; |
| 370 | purb->transfer_buffer_length = \ |
| 371 | peasycap->video_isoc_buffer_size; |
| 372 | purb->complete = easycap_complete; |
| 373 | purb->context = peasycap; |
| 374 | purb->start_frame = 0; |
| 375 | purb->number_of_packets = \ |
| 376 | peasycap->video_isoc_framesperdesc; |
| 377 | |
| 378 | for (j = 0; j < peasycap->\ |
| 379 | video_isoc_framesperdesc; j++) { |
| 380 | purb->iso_frame_desc[j].\ |
| 381 | offset = j * \ |
| 382 | peasycap->\ |
| 383 | video_isoc_maxframesize; |
| 384 | purb->iso_frame_desc[j].\ |
| 385 | length = peasycap->\ |
| 386 | video_isoc_maxframesize; |
| 387 | } |
| 388 | |
| 389 | rc = usb_submit_urb(purb, GFP_KERNEL); |
| 390 | if (0 != rc) { |
| 391 | isbad++; |
| 392 | SAY("ERROR: usb_submit_urb() failed " \ |
| 393 | "for urb with rc:\n"); |
| 394 | switch (rc) { |
| 395 | case -ENOMEM: { |
| 396 | SAY("ENOMEM\n"); |
| 397 | break; |
| 398 | } |
| 399 | case -ENODEV: { |
| 400 | SAY("ENODEV\n"); |
| 401 | break; |
| 402 | } |
| 403 | case -ENXIO: { |
| 404 | SAY("ENXIO\n"); |
| 405 | break; |
| 406 | } |
| 407 | case -EINVAL: { |
| 408 | SAY("EINVAL\n"); |
| 409 | break; |
| 410 | } |
| 411 | case -EAGAIN: { |
| 412 | SAY("EAGAIN\n"); |
| 413 | break; |
| 414 | } |
| 415 | case -EFBIG: { |
| 416 | SAY("EFBIG\n"); |
| 417 | break; |
| 418 | } |
| 419 | case -EPIPE: { |
| 420 | SAY("EPIPE\n"); |
| 421 | break; |
| 422 | } |
| 423 | case -EMSGSIZE: { |
| 424 | SAY("EMSGSIZE\n"); |
| 425 | break; |
| 426 | } |
| 427 | default: { |
| 428 | SAY("unknown error code %i\n",\ |
| 429 | rc); |
| 430 | break; |
| 431 | } |
| 432 | } |
| 433 | } else { |
| 434 | m++; |
| 435 | } |
| 436 | } else { |
| 437 | isbad++; |
| 438 | } |
| 439 | } else { |
| 440 | isbad++; |
| 441 | } |
| 442 | } |
| 443 | if (isbad) { |
| 444 | JOT(4, "attempting cleanup instead of submitting\n"); |
| 445 | list_for_each(plist_head, (peasycap->purb_video_head)) { |
| 446 | pdata_urb = list_entry(plist_head, struct data_urb, \ |
| 447 | list_head); |
| 448 | if (NULL != pdata_urb) { |
| 449 | purb = pdata_urb->purb; |
| 450 | if (NULL != purb) |
| 451 | usb_kill_urb(purb); |
| 452 | } |
| 453 | } |
| 454 | peasycap->video_isoc_streaming = 0; |
| 455 | } else { |
| 456 | peasycap->video_isoc_streaming = 1; |
| 457 | JOT(4, "submitted %i video urbs\n", m); |
| 458 | } |
| 459 | |
| 460 | |
| 461 | |
| 462 | |
| 463 | |
| 464 | |
| 465 | } else { |
| 466 | JOT(4, "already streaming video urbs\n"); |
| 467 | } |
| 468 | return 0; |
| 469 | } |
| 470 | /*****************************************************************************/ |
| 471 | int |
| 472 | kill_video_urbs(struct easycap *peasycap) |
| 473 | { |
| 474 | int m; |
| 475 | struct list_head *plist_head; |
| 476 | struct data_urb *pdata_urb; |
| 477 | |
| 478 | if ((struct easycap *)NULL == peasycap) { |
| 479 | SAY("ERROR: peasycap is NULL\n"); |
| 480 | return -EFAULT; |
| 481 | } |
| 482 | if (peasycap->video_isoc_streaming) { |
| 483 | |
| 484 | |
| 485 | |
| 486 | if ((struct list_head *)NULL != peasycap->purb_video_head) { |
| 487 | peasycap->video_isoc_streaming = 0; |
| 488 | JOT(4, "killing video urbs\n"); |
| 489 | m = 0; |
| 490 | list_for_each(plist_head, (peasycap->purb_video_head)) { |
| 491 | pdata_urb = list_entry(plist_head, struct data_urb, \ |
| 492 | list_head); |
| 493 | if ((struct data_urb *)NULL != pdata_urb) { |
| 494 | if ((struct urb *)NULL != pdata_urb->purb) { |
| 495 | usb_kill_urb(pdata_urb->purb); |
| 496 | m++; |
| 497 | } |
| 498 | } |
| 499 | } |
| 500 | JOT(4, "%i video urbs killed\n", m); |
| 501 | } else { |
| 502 | SAY("ERROR: peasycap->purb_video_head is NULL\n"); |
| 503 | return -EFAULT; |
| 504 | } |
| 505 | } else { |
| 506 | JOT(8, "%i=video_isoc_streaming, no video urbs killed\n", \ |
| 507 | peasycap->video_isoc_streaming); |
| 508 | } |
| 509 | return 0; |
| 510 | } |
| 511 | /****************************************************************************/ |
| 512 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 513 | #if defined(EASYCAP_IS_VIDEODEV_CLIENT) |
| 514 | int |
| 515 | easycap_release_noinode(struct file *file) |
| 516 | { |
| 517 | return easycap_release((struct inode *)NULL, file); |
| 518 | } |
| 519 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 520 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 521 | /*--------------------------------------------------------------------------*/ |
| 522 | int |
| 523 | easycap_release(struct inode *inode, struct file *file) |
| 524 | { |
| 525 | #if (!defined(EASYCAP_IS_VIDEODEV_CLIENT)) |
| 526 | struct easycap *peasycap; |
| 527 | |
| 528 | JOT(4, "\n"); |
| 529 | |
Joe Perches | ba952d8 | 2010-07-12 13:50:10 -0700 | [diff] [blame] | 530 | peasycap = file->private_data; |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 531 | if (NULL == peasycap) { |
| 532 | SAY("ERROR: peasycap is NULL.\n"); |
| 533 | SAY("ending unsuccessfully\n"); |
| 534 | return -EFAULT; |
| 535 | } |
| 536 | if (0 != kill_video_urbs(peasycap)) { |
| 537 | SAY("ERROR: kill_video_urbs() failed\n"); |
| 538 | return -EFAULT; |
| 539 | } |
| 540 | JOT(4, "ending successfully\n"); |
| 541 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 542 | #else |
| 543 | # |
| 544 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 545 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 546 | |
| 547 | return 0; |
| 548 | } |
| 549 | /****************************************************************************/ |
| 550 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 551 | #if defined(EASYCAP_IS_VIDEODEV_CLIENT) |
| 552 | int |
| 553 | videodev_release(struct video_device *pvd) |
| 554 | { |
| 555 | struct easycap *peasycap; |
| 556 | int i, j, k; |
| 557 | |
| 558 | JOT(4, "\n"); |
| 559 | |
| 560 | k = 0; |
| 561 | for (i = 0; i < video_device_many; i++) { |
| 562 | pvideo_device = pvideo_array[i]; |
| 563 | if ((struct video_device *)NULL != pvideo_device) { |
| 564 | if (pvd->minor == pvideo_device->minor) { |
| 565 | peasycap = (struct easycap *)\ |
| 566 | video_get_drvdata(pvideo_device); |
| 567 | if ((struct easycap *)NULL == peasycap) { |
| 568 | SAY("ERROR: peasycap is NULL\n"); |
| 569 | SAY("ending unsuccessfully\n"); |
| 570 | return -EFAULT; |
| 571 | } |
| 572 | if (0 != kill_video_urbs(peasycap)) { |
| 573 | SAY("ERROR: kill_video_urbs() failed\n"); |
| 574 | return -EFAULT; |
| 575 | } |
| 576 | JOT(4, "freeing video_device structure: " \ |
| 577 | "/dev/video%i\n", i); |
| 578 | kfree((void *)pvideo_device); |
| 579 | for (j = i; j < (VIDEO_DEVICE_MANY - 1); j++) |
| 580 | pvideo_array[j] = pvideo_array[j + 1]; |
| 581 | video_device_many--; k++; |
| 582 | break; |
| 583 | } |
| 584 | } |
| 585 | } |
| 586 | if (!k) { |
| 587 | SAY("ERROR: lost video_device structure for %i=minor\n", pvd->minor); |
| 588 | SAY("cannot free: may cause memory leak\n"); |
| 589 | SAY("ending unsuccessfully\n"); |
| 590 | return -EFAULT; |
| 591 | } |
| 592 | |
| 593 | JOT(4, "ending successfully\n"); |
| 594 | return 0; |
| 595 | } |
| 596 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 597 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 598 | /****************************************************************************/ |
| 599 | /*--------------------------------------------------------------------------*/ |
| 600 | /* |
| 601 | * THIS FUNCTION IS CALLED FROM WITHIN easycap_usb_disconnect(). |
| 602 | * BY THIS STAGE THE DEVICE HAS ALREADY BEEN PHYSICALLY UNPLUGGED. |
| 603 | * peasycap->pusb_device IS NO LONGER VALID AND SHOULD HAVE BEEN SET TO NULL. |
| 604 | */ |
| 605 | /*---------------------------------------------------------------------------*/ |
| 606 | void |
| 607 | easycap_delete(struct kref *pkref) |
| 608 | { |
| 609 | int k, m, lost; |
| 610 | int allocation_video_urb, allocation_video_page, allocation_video_struct; |
| 611 | int allocation_audio_urb, allocation_audio_page, allocation_audio_struct; |
| 612 | int registered_video, registered_audio; |
| 613 | struct easycap *peasycap; |
| 614 | struct data_urb *pdata_urb; |
| 615 | struct list_head *plist_head, *plist_next; |
| 616 | |
| 617 | JOT(4, "\n"); |
| 618 | |
| 619 | peasycap = container_of(pkref, struct easycap, kref); |
| 620 | if ((struct easycap *)NULL == peasycap) { |
| 621 | SAY("ERROR: peasycap is NULL: cannot perform deletions\n"); |
| 622 | return; |
| 623 | } |
| 624 | /*---------------------------------------------------------------------------*/ |
| 625 | /* |
| 626 | * FREE VIDEO. |
| 627 | */ |
| 628 | /*---------------------------------------------------------------------------*/ |
| 629 | if ((struct list_head *)NULL != peasycap->purb_video_head) { |
| 630 | JOT(4, "freeing video urbs\n"); |
| 631 | m = 0; |
| 632 | list_for_each(plist_head, (peasycap->purb_video_head)) { |
| 633 | pdata_urb = list_entry(plist_head, struct data_urb, list_head); |
| 634 | if (NULL == pdata_urb) |
| 635 | JOT(4, "ERROR: pdata_urb is NULL\n"); |
| 636 | else { |
| 637 | if ((struct urb *)NULL != pdata_urb->purb) { |
| 638 | usb_free_urb(pdata_urb->purb); |
| 639 | pdata_urb->purb = (struct urb *)NULL; |
| 640 | peasycap->allocation_video_urb -= 1; |
| 641 | m++; |
| 642 | } |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | JOT(4, "%i video urbs freed\n", m); |
| 647 | /*---------------------------------------------------------------------------*/ |
| 648 | JOT(4, "freeing video data_urb structures.\n"); |
| 649 | m = 0; |
| 650 | list_for_each_safe(plist_head, plist_next, peasycap->purb_video_head) { |
| 651 | pdata_urb = list_entry(plist_head, struct data_urb, list_head); |
| 652 | if ((struct data_urb *)NULL != pdata_urb) { |
| 653 | kfree(pdata_urb); pdata_urb = (struct data_urb *)NULL; |
| 654 | peasycap->allocation_video_struct -= \ |
| 655 | sizeof(struct data_urb); |
| 656 | m++; |
| 657 | } |
| 658 | } |
| 659 | JOT(4, "%i video data_urb structures freed\n", m); |
| 660 | JOT(4, "setting peasycap->purb_video_head=NULL\n"); |
| 661 | peasycap->purb_video_head = (struct list_head *)NULL; |
| 662 | } else { |
| 663 | JOT(4, "peasycap->purb_video_head is NULL\n"); |
| 664 | } |
| 665 | /*---------------------------------------------------------------------------*/ |
| 666 | JOT(4, "freeing video isoc buffers.\n"); |
| 667 | m = 0; |
| 668 | for (k = 0; k < VIDEO_ISOC_BUFFER_MANY; k++) { |
| 669 | if ((void *)NULL != peasycap->video_isoc_buffer[k].pgo) { |
| 670 | free_pages((unsigned long)\ |
| 671 | (peasycap->video_isoc_buffer[k].pgo), \ |
| 672 | VIDEO_ISOC_ORDER); |
| 673 | peasycap->video_isoc_buffer[k].pgo = (void *)NULL; |
| 674 | peasycap->allocation_video_page -= \ |
| 675 | ((unsigned int)(0x01 << VIDEO_ISOC_ORDER)); |
| 676 | m++; |
| 677 | } |
| 678 | } |
| 679 | JOT(4, "isoc video buffers freed: %i pages\n", m * (0x01 << VIDEO_ISOC_ORDER)); |
| 680 | /*---------------------------------------------------------------------------*/ |
| 681 | JOT(4, "freeing video field buffers.\n"); |
| 682 | lost = 0; |
| 683 | for (k = 0; k < FIELD_BUFFER_MANY; k++) { |
| 684 | for (m = 0; m < FIELD_BUFFER_SIZE/PAGE_SIZE; m++) { |
| 685 | if ((void *)NULL != peasycap->field_buffer[k][m].pgo) { |
| 686 | free_page((unsigned long)\ |
| 687 | (peasycap->field_buffer[k][m].pgo)); |
| 688 | peasycap->field_buffer[k][m].pgo = (void *)NULL; |
| 689 | peasycap->allocation_video_page -= 1; |
| 690 | lost++; |
| 691 | } |
| 692 | } |
| 693 | } |
| 694 | JOT(4, "video field buffers freed: %i pages\n", lost); |
| 695 | /*---------------------------------------------------------------------------*/ |
| 696 | JOT(4, "freeing video frame buffers.\n"); |
| 697 | lost = 0; |
| 698 | for (k = 0; k < FRAME_BUFFER_MANY; k++) { |
| 699 | for (m = 0; m < FRAME_BUFFER_SIZE/PAGE_SIZE; m++) { |
| 700 | if ((void *)NULL != peasycap->frame_buffer[k][m].pgo) { |
| 701 | free_page((unsigned long)\ |
| 702 | (peasycap->frame_buffer[k][m].pgo)); |
| 703 | peasycap->frame_buffer[k][m].pgo = (void *)NULL; |
| 704 | peasycap->allocation_video_page -= 1; |
| 705 | lost++; |
| 706 | } |
| 707 | } |
| 708 | } |
| 709 | JOT(4, "video frame buffers freed: %i pages\n", lost); |
| 710 | /*---------------------------------------------------------------------------*/ |
| 711 | /* |
| 712 | * FREE AUDIO. |
| 713 | */ |
| 714 | /*---------------------------------------------------------------------------*/ |
| 715 | if ((struct list_head *)NULL != peasycap->purb_audio_head) { |
| 716 | JOT(4, "freeing audio urbs\n"); |
| 717 | m = 0; |
| 718 | list_for_each(plist_head, (peasycap->purb_audio_head)) { |
| 719 | pdata_urb = list_entry(plist_head, struct data_urb, list_head); |
| 720 | if (NULL == pdata_urb) |
| 721 | JOT(4, "ERROR: pdata_urb is NULL\n"); |
| 722 | else { |
| 723 | if ((struct urb *)NULL != pdata_urb->purb) { |
| 724 | usb_free_urb(pdata_urb->purb); |
| 725 | pdata_urb->purb = (struct urb *)NULL; |
| 726 | peasycap->allocation_audio_urb -= 1; |
| 727 | m++; |
| 728 | } |
| 729 | } |
| 730 | } |
| 731 | JOT(4, "%i audio urbs freed\n", m); |
| 732 | /*---------------------------------------------------------------------------*/ |
| 733 | JOT(4, "freeing audio data_urb structures.\n"); |
| 734 | m = 0; |
| 735 | list_for_each_safe(plist_head, plist_next, peasycap->purb_audio_head) { |
| 736 | pdata_urb = list_entry(plist_head, struct data_urb, list_head); |
| 737 | if ((struct data_urb *)NULL != pdata_urb) { |
| 738 | kfree(pdata_urb); pdata_urb = (struct data_urb *)NULL; |
| 739 | peasycap->allocation_audio_struct -= \ |
| 740 | sizeof(struct data_urb); |
| 741 | m++; |
| 742 | } |
| 743 | } |
| 744 | JOT(4, "%i audio data_urb structures freed\n", m); |
| 745 | JOT(4, "setting peasycap->purb_audio_head=NULL\n"); |
| 746 | peasycap->purb_audio_head = (struct list_head *)NULL; |
| 747 | } else { |
| 748 | JOT(4, "peasycap->purb_audio_head is NULL\n"); |
| 749 | } |
| 750 | /*---------------------------------------------------------------------------*/ |
| 751 | JOT(4, "freeing audio isoc buffers.\n"); |
| 752 | m = 0; |
| 753 | for (k = 0; k < AUDIO_ISOC_BUFFER_MANY; k++) { |
| 754 | if ((void *)NULL != peasycap->audio_isoc_buffer[k].pgo) { |
| 755 | free_pages((unsigned long)\ |
| 756 | (peasycap->audio_isoc_buffer[k].pgo), \ |
| 757 | AUDIO_ISOC_ORDER); |
| 758 | peasycap->audio_isoc_buffer[k].pgo = (void *)NULL; |
| 759 | peasycap->allocation_audio_page -= \ |
| 760 | ((unsigned int)(0x01 << AUDIO_ISOC_ORDER)); |
| 761 | m++; |
| 762 | } |
| 763 | } |
| 764 | JOT(4, "easysnd_delete(): isoc audio buffers freed: %i pages\n", \ |
| 765 | m * (0x01 << AUDIO_ISOC_ORDER)); |
| 766 | /*---------------------------------------------------------------------------*/ |
| 767 | JOT(4, "freeing audio buffers.\n"); |
| 768 | lost = 0; |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 769 | for (k = 0; k < peasycap->audio_buffer_page_many; k++) { |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 770 | if ((void *)NULL != peasycap->audio_buffer[k].pgo) { |
| 771 | free_page((unsigned long)(peasycap->audio_buffer[k].pgo)); |
| 772 | peasycap->audio_buffer[k].pgo = (void *)NULL; |
| 773 | peasycap->allocation_audio_page -= 1; |
| 774 | lost++; |
| 775 | } |
| 776 | } |
| 777 | JOT(4, "easysnd_delete(): audio buffers freed: %i pages\n", lost); |
| 778 | /*---------------------------------------------------------------------------*/ |
| 779 | JOT(4, "freeing easycap structure.\n"); |
| 780 | allocation_video_urb = peasycap->allocation_video_urb; |
| 781 | allocation_video_page = peasycap->allocation_video_page; |
| 782 | allocation_video_struct = peasycap->allocation_video_struct; |
| 783 | registered_video = peasycap->registered_video; |
| 784 | allocation_audio_urb = peasycap->allocation_audio_urb; |
| 785 | allocation_audio_page = peasycap->allocation_audio_page; |
| 786 | allocation_audio_struct = peasycap->allocation_audio_struct; |
| 787 | registered_audio = peasycap->registered_audio; |
| 788 | m = 0; |
| 789 | if ((struct easycap *)NULL != peasycap) { |
| 790 | kfree(peasycap); peasycap = (struct easycap *)NULL; |
| 791 | allocation_video_struct -= sizeof(struct easycap); |
| 792 | m++; |
| 793 | } |
| 794 | JOT(4, "%i easycap structure freed\n", m); |
| 795 | /*---------------------------------------------------------------------------*/ |
| 796 | |
| 797 | SAY("%8i= video urbs after all deletions\n", allocation_video_urb); |
| 798 | SAY("%8i= video pages after all deletions\n", allocation_video_page); |
| 799 | SAY("%8i= video structs after all deletions\n", allocation_video_struct); |
| 800 | SAY("%8i= video devices after all deletions\n", registered_video); |
| 801 | SAY("%8i= audio urbs after all deletions\n", allocation_audio_urb); |
| 802 | SAY("%8i= audio pages after all deletions\n", allocation_audio_page); |
| 803 | SAY("%8i= audio structs after all deletions\n", allocation_audio_struct); |
| 804 | SAY("%8i= audio devices after all deletions\n", registered_audio); |
| 805 | |
| 806 | JOT(4, "ending.\n"); |
| 807 | return; |
| 808 | } |
| 809 | /*****************************************************************************/ |
| 810 | unsigned int easycap_poll(struct file *file, poll_table *wait) |
| 811 | { |
| 812 | struct easycap *peasycap; |
| 813 | |
| 814 | JOT(8, "\n"); |
| 815 | |
| 816 | if (NULL == ((poll_table *)wait)) |
| 817 | JOT(8, "WARNING: poll table pointer is NULL ... continuing\n"); |
| 818 | if (NULL == ((struct file *)file)) { |
| 819 | SAY("ERROR: file pointer is NULL\n"); |
| 820 | return -EFAULT; |
| 821 | } |
Joe Perches | ba952d8 | 2010-07-12 13:50:10 -0700 | [diff] [blame] | 822 | peasycap = file->private_data; |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 823 | if (NULL == peasycap) { |
| 824 | SAY("ERROR: peasycap is NULL\n"); |
| 825 | return -EFAULT; |
| 826 | } |
| 827 | peasycap->polled = 1; |
| 828 | |
| 829 | if (0 == easycap_dqbuf(peasycap, 0)) |
| 830 | return POLLIN | POLLRDNORM; |
| 831 | else |
| 832 | return POLLERR; |
| 833 | |
| 834 | } |
| 835 | /*****************************************************************************/ |
| 836 | /*---------------------------------------------------------------------------*/ |
| 837 | /* |
| 838 | * IF mode IS NONZERO THIS ROUTINE RETURNS -EAGAIN RATHER THAN BLOCKING. |
| 839 | */ |
| 840 | /*---------------------------------------------------------------------------*/ |
| 841 | int |
| 842 | easycap_dqbuf(struct easycap *peasycap, int mode) |
| 843 | { |
| 844 | int miss, rc; |
| 845 | |
| 846 | JOT(8, "\n"); |
| 847 | |
| 848 | if (NULL == peasycap) { |
| 849 | SAY("ERROR: peasycap is NULL\n"); |
| 850 | return -EFAULT; |
| 851 | } |
| 852 | /*---------------------------------------------------------------------------*/ |
| 853 | /* |
| 854 | * WAIT FOR FIELD 0 |
| 855 | */ |
| 856 | /*---------------------------------------------------------------------------*/ |
| 857 | miss = 0; |
| 858 | if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0]))) |
| 859 | return -ERESTARTSYS; |
| 860 | while ((peasycap->field_read == peasycap->field_fill) || \ |
| 861 | (0 != (0xFF00 & peasycap->field_buffer\ |
| 862 | [peasycap->field_read][0].kount)) || \ |
| 863 | (0 != (0x00FF & peasycap->field_buffer\ |
| 864 | [peasycap->field_read][0].kount))) { |
| 865 | mutex_unlock(&(peasycap->mutex_mmap_video[0])); |
| 866 | |
| 867 | if (mode) |
| 868 | return -EAGAIN; |
| 869 | |
| 870 | JOT(8, "first wait on wq_video, " \ |
| 871 | "%i=field_read %i=field_fill\n", \ |
| 872 | peasycap->field_read, peasycap->field_fill); |
| 873 | |
| 874 | msleep(1); |
| 875 | if (0 != (wait_event_interruptible(peasycap->wq_video, \ |
| 876 | (peasycap->video_idle || peasycap->video_eof || \ |
| 877 | ((peasycap->field_read != peasycap->field_fill) && \ |
| 878 | (0 == (0xFF00 & peasycap->field_buffer\ |
| 879 | [peasycap->field_read][0].kount)) && \ |
| 880 | (0 == (0x00FF & peasycap->field_buffer\ |
| 881 | [peasycap->field_read][0].kount))))))){ |
| 882 | SAY("aborted by signal\n"); |
| 883 | return -EIO; |
| 884 | } |
| 885 | if (peasycap->video_idle) { |
| 886 | JOT(8, "%i=peasycap->video_idle\n", peasycap->video_idle); |
| 887 | return -EIO; |
| 888 | } |
| 889 | if (peasycap->video_eof) { |
| 890 | JOT(8, "%i=peasycap->video_eof\n", peasycap->video_eof); |
| 891 | debrief(peasycap); |
| 892 | kill_video_urbs(peasycap); |
| 893 | return -EIO; |
| 894 | } |
| 895 | miss++; |
| 896 | if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0]))) |
| 897 | return -ERESTARTSYS; |
| 898 | } |
| 899 | mutex_unlock(&(peasycap->mutex_mmap_video[0])); |
| 900 | JOT(8, "first awakening on wq_video after %i waits\n", miss); |
| 901 | |
| 902 | rc = field2frame(peasycap); |
| 903 | if (0 != rc) |
| 904 | SAY("ERROR: field2frame() returned %i\n", rc); |
| 905 | |
| 906 | if (true == peasycap->offerfields) { |
| 907 | peasycap->frame_read = peasycap->frame_fill; |
| 908 | (peasycap->frame_fill)++; |
| 909 | if (peasycap->frame_buffer_many <= peasycap->frame_fill) |
| 910 | peasycap->frame_fill = 0; |
| 911 | |
| 912 | if (0x01 & easycap_standard[peasycap->standard_offset].mask) { |
| 913 | peasycap->frame_buffer[peasycap->frame_read][0].kount = \ |
| 914 | V4L2_FIELD_BOTTOM; |
| 915 | } else { |
| 916 | peasycap->frame_buffer[peasycap->frame_read][0].kount = \ |
| 917 | V4L2_FIELD_TOP; |
| 918 | } |
| 919 | JOT(8, "setting: %i=peasycap->frame_read\n", peasycap->frame_read); |
| 920 | JOT(8, "bumped to: %i=peasycap->frame_fill\n", peasycap->frame_fill); |
| 921 | } |
| 922 | /*---------------------------------------------------------------------------*/ |
| 923 | /* |
| 924 | * WAIT FOR FIELD 1 |
| 925 | */ |
| 926 | /*---------------------------------------------------------------------------*/ |
| 927 | miss = 0; |
| 928 | if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0]))) |
| 929 | return -ERESTARTSYS; |
| 930 | while ((peasycap->field_read == peasycap->field_fill) || \ |
| 931 | (0 != (0xFF00 & peasycap->field_buffer\ |
| 932 | [peasycap->field_read][0].kount)) || \ |
| 933 | (0 == (0x00FF & peasycap->field_buffer\ |
| 934 | [peasycap->field_read][0].kount))) { |
| 935 | mutex_unlock(&(peasycap->mutex_mmap_video[0])); |
| 936 | |
| 937 | if (mode) |
| 938 | return -EAGAIN; |
| 939 | |
| 940 | JOT(8, "second wait on wq_video, " \ |
| 941 | "%i=field_read %i=field_fill\n", \ |
| 942 | peasycap->field_read, peasycap->field_fill); |
| 943 | msleep(1); |
| 944 | if (0 != (wait_event_interruptible(peasycap->wq_video, \ |
| 945 | (peasycap->video_idle || peasycap->video_eof || \ |
| 946 | ((peasycap->field_read != peasycap->field_fill) && \ |
| 947 | (0 == (0xFF00 & peasycap->field_buffer\ |
| 948 | [peasycap->field_read][0].kount)) && \ |
| 949 | (0 != (0x00FF & peasycap->field_buffer\ |
| 950 | [peasycap->field_read][0].kount))))))){ |
| 951 | SAY("aborted by signal\n"); |
| 952 | return -EIO; |
| 953 | } |
| 954 | if (peasycap->video_idle) { |
| 955 | JOT(8, "%i=peasycap->video_idle\n", peasycap->video_idle); |
| 956 | return -EIO; |
| 957 | } |
| 958 | if (peasycap->video_eof) { |
| 959 | JOT(8, "%i=peasycap->video_eof\n", peasycap->video_eof); |
| 960 | debrief(peasycap); |
| 961 | kill_video_urbs(peasycap); |
| 962 | return -EIO; |
| 963 | } |
| 964 | miss++; |
| 965 | if (mutex_lock_interruptible(&(peasycap->mutex_mmap_video[0]))) |
| 966 | return -ERESTARTSYS; |
| 967 | } |
| 968 | mutex_unlock(&(peasycap->mutex_mmap_video[0])); |
| 969 | JOT(8, "second awakening on wq_video after %i waits\n", miss); |
| 970 | |
| 971 | rc = field2frame(peasycap); |
| 972 | if (0 != rc) |
| 973 | SAY("ERROR: field2frame() returned %i\n", rc); |
| 974 | |
| 975 | peasycap->frame_read = peasycap->frame_fill; |
| 976 | peasycap->queued[peasycap->frame_read] = 0; |
| 977 | peasycap->done[peasycap->frame_read] = V4L2_BUF_FLAG_DONE; |
| 978 | |
| 979 | (peasycap->frame_fill)++; |
| 980 | if (peasycap->frame_buffer_many <= peasycap->frame_fill) |
| 981 | peasycap->frame_fill = 0; |
| 982 | |
| 983 | if (0x01 & easycap_standard[peasycap->standard_offset].mask) { |
| 984 | peasycap->frame_buffer[peasycap->frame_read][0].kount = \ |
| 985 | V4L2_FIELD_TOP; |
| 986 | } else { |
| 987 | peasycap->frame_buffer[peasycap->frame_read][0].kount = \ |
| 988 | V4L2_FIELD_BOTTOM; |
| 989 | } |
| 990 | |
| 991 | JOT(8, "setting: %i=peasycap->frame_read\n", peasycap->frame_read); |
| 992 | JOT(8, "bumped to: %i=peasycap->frame_fill\n", peasycap->frame_fill); |
| 993 | |
| 994 | return 0; |
| 995 | } |
| 996 | /*****************************************************************************/ |
| 997 | /*---------------------------------------------------------------------------*/ |
| 998 | /* |
| 999 | * BY DEFINITION, odd IS true FOR THE FIELD OCCUPYING LINES 1,3,5,...,479 |
| 1000 | * odd IS false FOR THE FIELD OCCUPYING LINES 0,2,4,...,478 |
| 1001 | * |
| 1002 | * WHEN BOOLEAN PARAMETER decimatepixel IS true, ONLY THE FIELD FOR WHICH |
| 1003 | * odd==false IS TRANSFERRED TO THE FRAME BUFFER. |
| 1004 | * |
| 1005 | * THE BOOLEAN PARAMETER offerfields IS true ONLY WHEN THE USER PROGRAM |
| 1006 | * CHOOSES THE OPTION V4L2_FIELD_ALTERNATE. NO USERSPACE PROGRAM TESTED |
| 1007 | * TO DATE HAS DONE THIS. BUGS ARE LIKELY. |
| 1008 | */ |
| 1009 | /*---------------------------------------------------------------------------*/ |
| 1010 | int |
| 1011 | field2frame(struct easycap *peasycap) |
| 1012 | { |
| 1013 | static struct timeval timeval0; |
| 1014 | struct timeval timeval; |
| 1015 | long long int above, below; |
| 1016 | __u32 remainder; |
| 1017 | struct signed_div_result sdr; |
| 1018 | |
| 1019 | void *pex, *pad; |
| 1020 | int kex, kad, mex, mad, rex, rad, rad2; |
| 1021 | int c2, c3, w2, w3, cz, wz; |
| 1022 | int rc, bytesperpixel, multiplier, much, more, over, rump, caches; |
| 1023 | __u8 mask, margin; |
| 1024 | bool odd, isuy, decimatepixel, offerfields; |
| 1025 | |
| 1026 | JOT(8, "===== parity %i, field buffer %i --> frame buffer %i\n", \ |
| 1027 | peasycap->field_buffer[peasycap->field_read][0].kount,\ |
| 1028 | peasycap->field_read, peasycap->frame_fill); |
| 1029 | JOT(8, "===== %i=bytesperpixel\n", peasycap->bytesperpixel); |
| 1030 | if (true == peasycap->offerfields) |
| 1031 | JOT(8, "===== offerfields\n"); |
| 1032 | |
| 1033 | /*---------------------------------------------------------------------------*/ |
| 1034 | /* |
| 1035 | * REJECT OR CLEAN BAD FIELDS |
| 1036 | */ |
| 1037 | /*---------------------------------------------------------------------------*/ |
| 1038 | if (peasycap->field_read == peasycap->field_fill) { |
| 1039 | SAY("ERROR: on entry, still filling field buffer %i\n", \ |
| 1040 | peasycap->field_read); |
| 1041 | return 0; |
| 1042 | } |
| 1043 | #if defined(EASYCAP_TESTCARD) |
| 1044 | easycap_testcard(peasycap, peasycap->field_read); |
| 1045 | #else |
| 1046 | if (0 != (0x0400 & peasycap->field_buffer[peasycap->field_read][0].kount)) |
| 1047 | easycap_testcard(peasycap, peasycap->field_read); |
| 1048 | #endif /*EASYCAP_TESTCARD*/ |
| 1049 | /*---------------------------------------------------------------------------*/ |
| 1050 | |
| 1051 | offerfields = peasycap->offerfields; |
| 1052 | bytesperpixel = peasycap->bytesperpixel; |
| 1053 | decimatepixel = peasycap->decimatepixel; |
| 1054 | |
| 1055 | if ((2 != bytesperpixel) && \ |
| 1056 | (3 != bytesperpixel) && \ |
| 1057 | (4 != bytesperpixel)) { |
| 1058 | SAY("MISTAKE: %i=bytesperpixel\n", bytesperpixel); |
| 1059 | return -EFAULT; |
| 1060 | } |
| 1061 | if (true == decimatepixel) |
| 1062 | multiplier = 2; |
| 1063 | else |
| 1064 | multiplier = 1; |
| 1065 | |
| 1066 | w2 = 2 * multiplier * (peasycap->width); |
| 1067 | w3 = bytesperpixel * \ |
| 1068 | multiplier * \ |
| 1069 | (peasycap->width); |
| 1070 | wz = multiplier * \ |
| 1071 | (peasycap->height) * \ |
| 1072 | multiplier * \ |
| 1073 | (peasycap->width); |
| 1074 | |
| 1075 | kex = peasycap->field_read; mex = 0; |
| 1076 | kad = peasycap->frame_fill; mad = 0; |
| 1077 | |
| 1078 | pex = peasycap->field_buffer[kex][0].pgo; rex = PAGE_SIZE; |
| 1079 | pad = peasycap->frame_buffer[kad][0].pgo; rad = PAGE_SIZE; |
| 1080 | if (peasycap->field_buffer[kex][0].kount) |
| 1081 | odd = true; |
| 1082 | else |
| 1083 | odd = false; |
| 1084 | |
| 1085 | if ((true == odd) && (false == offerfields) &&(false == decimatepixel)) { |
| 1086 | JOT(8, " initial skipping %4i bytes p.%4i\n", \ |
| 1087 | w3/multiplier, mad); |
| 1088 | pad += (w3 / multiplier); rad -= (w3 / multiplier); |
| 1089 | } |
| 1090 | isuy = true; |
| 1091 | mask = 0; rump = 0; caches = 0; |
| 1092 | |
| 1093 | cz = 0; |
| 1094 | while (cz < wz) { |
| 1095 | /*-------------------------------------------------------------------*/ |
| 1096 | /* |
| 1097 | ** PROCESS ONE LINE OF FRAME AT FULL RESOLUTION: |
| 1098 | ** READ w2 BYTES FROM FIELD BUFFER, |
| 1099 | ** WRITE w3 BYTES TO FRAME BUFFER |
| 1100 | **/ |
| 1101 | /*-------------------------------------------------------------------*/ |
| 1102 | if (false == decimatepixel) { |
| 1103 | over = w2; |
| 1104 | do { |
| 1105 | much = over; more = 0; margin = 0; mask = 0x00; |
| 1106 | if (rex < much) |
| 1107 | much = rex; |
| 1108 | rump = 0; |
| 1109 | |
| 1110 | if (much % 2) { |
| 1111 | SAY("MISTAKE: much is odd\n"); |
| 1112 | return -EFAULT; |
| 1113 | } |
| 1114 | |
| 1115 | more = (bytesperpixel * \ |
| 1116 | much) / 2; |
| 1117 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 1118 | if (1 < bytesperpixel) { |
| 1119 | if ((rad * \ |
| 1120 | 2) < (much * \ |
| 1121 | bytesperpixel)) { |
| 1122 | /* |
| 1123 | ** INJUDICIOUS ALTERATION OF THIS |
| 1124 | ** BLOCK WILL CAUSE BREAKAGE. |
| 1125 | ** BEWARE. |
| 1126 | **/ |
| 1127 | rad2 = rad + bytesperpixel - 1; |
| 1128 | much = ((((2 * \ |
| 1129 | rad2)/bytesperpixel)/2) * 2); |
| 1130 | rump = ((bytesperpixel * \ |
| 1131 | much) / 2) - rad; |
| 1132 | more = rad; |
| 1133 | } |
| 1134 | mask = (__u8)rump; |
| 1135 | margin = 0; |
| 1136 | if (much == rex) { |
| 1137 | mask |= 0x04; |
| 1138 | if ((mex + 1) < FIELD_BUFFER_SIZE/ \ |
| 1139 | PAGE_SIZE) { |
| 1140 | margin = *((__u8 *)(peasycap->\ |
| 1141 | field_buffer\ |
| 1142 | [kex][mex + 1].pgo)); |
| 1143 | } else |
| 1144 | mask |= 0x08; |
| 1145 | } |
| 1146 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 1147 | } else { |
| 1148 | SAY("MISTAKE: %i=bytesperpixel\n", \ |
| 1149 | bytesperpixel); |
| 1150 | return -EFAULT; |
| 1151 | } |
| 1152 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 1153 | if (rump) |
| 1154 | caches++; |
| 1155 | |
| 1156 | rc = redaub(peasycap, pad, pex, much, more, \ |
| 1157 | mask, margin, isuy); |
| 1158 | if (0 > rc) { |
| 1159 | SAY("ERROR: redaub() failed\n"); |
| 1160 | return -EFAULT; |
| 1161 | } |
| 1162 | if (much % 4) { |
| 1163 | if (isuy) |
| 1164 | isuy = false; |
| 1165 | else |
| 1166 | isuy = true; |
| 1167 | } |
| 1168 | over -= much; cz += much; |
| 1169 | pex += much; rex -= much; |
| 1170 | if (!rex) { |
| 1171 | mex++; |
| 1172 | pex = peasycap->field_buffer[kex][mex].pgo; |
| 1173 | rex = PAGE_SIZE; |
| 1174 | } |
| 1175 | pad += more; |
| 1176 | rad -= more; |
| 1177 | if (!rad) { |
| 1178 | mad++; |
| 1179 | pad = peasycap->frame_buffer[kad][mad].pgo; |
| 1180 | rad = PAGE_SIZE; |
| 1181 | if (rump) { |
| 1182 | pad += rump; |
| 1183 | rad -= rump; |
| 1184 | } |
| 1185 | } |
| 1186 | } while (over); |
| 1187 | /*---------------------------------------------------------------------------*/ |
| 1188 | /* |
| 1189 | * SKIP w3 BYTES IN TARGET FRAME BUFFER, |
| 1190 | * UNLESS IT IS THE LAST LINE OF AN ODD FRAME |
| 1191 | */ |
| 1192 | /*---------------------------------------------------------------------------*/ |
| 1193 | if (((false == odd) || (cz != wz))&&(false == offerfields)) { |
| 1194 | over = w3; |
| 1195 | do { |
| 1196 | if (!rad) { |
| 1197 | mad++; |
| 1198 | pad = peasycap->frame_buffer\ |
| 1199 | [kad][mad].pgo; |
| 1200 | rad = PAGE_SIZE; |
| 1201 | } |
| 1202 | more = over; |
| 1203 | if (rad < more) |
| 1204 | more = rad; |
| 1205 | over -= more; |
| 1206 | pad += more; |
| 1207 | rad -= more; |
| 1208 | } while (over); |
| 1209 | } |
| 1210 | /*---------------------------------------------------------------------------*/ |
| 1211 | /* |
| 1212 | * PROCESS ONE LINE OF FRAME AT REDUCED RESOLUTION: |
| 1213 | * ONLY IF false==odd, |
| 1214 | * READ w2 BYTES FROM FIELD BUFFER, |
| 1215 | * WRITE w3 / 2 BYTES TO FRAME BUFFER |
| 1216 | */ |
| 1217 | /*---------------------------------------------------------------------------*/ |
| 1218 | } else if (false == odd) { |
| 1219 | over = w2; |
| 1220 | do { |
| 1221 | much = over; more = 0; margin = 0; mask = 0x00; |
| 1222 | if (rex < much) |
| 1223 | much = rex; |
| 1224 | rump = 0; |
| 1225 | |
| 1226 | if (much % 2) { |
| 1227 | SAY("MISTAKE: much is odd\n"); |
| 1228 | return -EFAULT; |
| 1229 | } |
| 1230 | |
| 1231 | more = (bytesperpixel * \ |
| 1232 | much) / 4; |
| 1233 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 1234 | if (1 < bytesperpixel) { |
| 1235 | if ((rad * 4) < (much * \ |
| 1236 | bytesperpixel)) { |
| 1237 | /* |
| 1238 | ** INJUDICIOUS ALTERATION OF THIS |
| 1239 | ** BLOCK WILL CAUSE BREAKAGE. |
| 1240 | ** BEWARE. |
| 1241 | **/ |
| 1242 | rad2 = rad + bytesperpixel - 1; |
| 1243 | much = ((((2 * rad2)/bytesperpixel)/2)\ |
| 1244 | * 4); |
| 1245 | rump = ((bytesperpixel * \ |
| 1246 | much) / 4) - rad; |
| 1247 | more = rad; |
| 1248 | } |
| 1249 | mask = (__u8)rump; |
| 1250 | margin = 0; |
| 1251 | if (much == rex) { |
| 1252 | mask |= 0x04; |
| 1253 | if ((mex + 1) < FIELD_BUFFER_SIZE/ \ |
| 1254 | PAGE_SIZE) { |
| 1255 | margin = *((__u8 *)(peasycap->\ |
| 1256 | field_buffer\ |
| 1257 | [kex][mex + 1].pgo)); |
| 1258 | } |
| 1259 | else |
| 1260 | mask |= 0x08; |
| 1261 | } |
| 1262 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 1263 | } else { |
| 1264 | SAY("MISTAKE: %i=bytesperpixel\n", \ |
| 1265 | bytesperpixel); |
| 1266 | return -EFAULT; |
| 1267 | } |
| 1268 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 1269 | if (rump) |
| 1270 | caches++; |
| 1271 | |
| 1272 | rc = redaub(peasycap, pad, pex, much, more, \ |
| 1273 | mask, margin, isuy); |
| 1274 | if (0 > rc) { |
| 1275 | SAY("ERROR: redaub() failed\n"); |
| 1276 | return -EFAULT; |
| 1277 | } |
| 1278 | over -= much; cz += much; |
| 1279 | pex += much; rex -= much; |
| 1280 | if (!rex) { |
| 1281 | mex++; |
| 1282 | pex = peasycap->field_buffer[kex][mex].pgo; |
| 1283 | rex = PAGE_SIZE; |
| 1284 | } |
| 1285 | pad += more; |
| 1286 | rad -= more; |
| 1287 | if (!rad) { |
| 1288 | mad++; |
| 1289 | pad = peasycap->frame_buffer[kad][mad].pgo; |
| 1290 | rad = PAGE_SIZE; |
| 1291 | if (rump) { |
| 1292 | pad += rump; |
| 1293 | rad -= rump; |
| 1294 | } |
| 1295 | } |
| 1296 | } while (over); |
| 1297 | /*---------------------------------------------------------------------------*/ |
| 1298 | /* |
| 1299 | * OTHERWISE JUST |
| 1300 | * READ w2 BYTES FROM FIELD BUFFER AND DISCARD THEM |
| 1301 | */ |
| 1302 | /*---------------------------------------------------------------------------*/ |
| 1303 | } else { |
| 1304 | over = w2; |
| 1305 | do { |
| 1306 | if (!rex) { |
| 1307 | mex++; |
| 1308 | pex = peasycap->field_buffer[kex][mex].pgo; |
| 1309 | rex = PAGE_SIZE; |
| 1310 | } |
| 1311 | much = over; |
| 1312 | if (rex < much) |
| 1313 | much = rex; |
| 1314 | over -= much; |
| 1315 | cz += much; |
| 1316 | pex += much; |
| 1317 | rex -= much; |
| 1318 | } while (over); |
| 1319 | } |
| 1320 | } |
| 1321 | /*---------------------------------------------------------------------------*/ |
| 1322 | /* |
| 1323 | * SANITY CHECKS |
| 1324 | */ |
| 1325 | /*---------------------------------------------------------------------------*/ |
| 1326 | c2 = (mex + 1)*PAGE_SIZE - rex; |
| 1327 | if (cz != c2) |
| 1328 | SAY("ERROR: discrepancy %i in bytes read\n", c2 - cz); |
| 1329 | c3 = (mad + 1)*PAGE_SIZE - rad; |
| 1330 | |
| 1331 | if (false == decimatepixel) { |
| 1332 | if (bytesperpixel * \ |
| 1333 | cz != c3) \ |
| 1334 | SAY("ERROR: discrepancy %i in bytes written\n", \ |
| 1335 | c3 - (bytesperpixel * \ |
| 1336 | cz)); |
| 1337 | } else { |
| 1338 | if (false == odd) { |
| 1339 | if (bytesperpixel * \ |
| 1340 | cz != (4 * c3)) |
| 1341 | SAY("ERROR: discrepancy %i in bytes written\n", \ |
| 1342 | (2*c3)-(bytesperpixel * \ |
| 1343 | cz)); |
| 1344 | } else { |
| 1345 | if (0 != c3) |
| 1346 | SAY("ERROR: discrepancy %i " \ |
| 1347 | "in bytes written\n", c3); |
| 1348 | } |
| 1349 | } |
| 1350 | if (rump) |
| 1351 | SAY("ERROR: undischarged cache at end of line in frame buffer\n"); |
| 1352 | |
| 1353 | JOT(8, "===== field2frame(): %i bytes --> %i bytes (incl skip)\n", c2, c3); |
| 1354 | JOT(8, "===== field2frame(): %i=mad %i=rad\n", mad, rad); |
| 1355 | |
| 1356 | if (true == odd) |
| 1357 | JOT(8, "+++++ field2frame(): frame buffer %i is full\n", kad); |
| 1358 | |
| 1359 | if (peasycap->field_read == peasycap->field_fill) |
| 1360 | SAY("WARNING: on exit, filling field buffer %i\n", \ |
| 1361 | peasycap->field_read); |
| 1362 | /*---------------------------------------------------------------------------*/ |
| 1363 | /* |
| 1364 | * CALCULATE VIDEO STREAMING RATE |
| 1365 | */ |
| 1366 | /*---------------------------------------------------------------------------*/ |
| 1367 | do_gettimeofday(&timeval); |
| 1368 | if (timeval0.tv_sec) { |
| 1369 | below = ((long long int)(1000000)) * \ |
| 1370 | ((long long int)(timeval.tv_sec - timeval0.tv_sec)) + \ |
| 1371 | (long long int)(timeval.tv_usec - timeval0.tv_usec); |
| 1372 | above = (long long int)1000000; |
| 1373 | |
| 1374 | sdr = signed_div(above, below); |
| 1375 | above = sdr.quotient; |
| 1376 | remainder = (__u32)sdr.remainder; |
| 1377 | |
| 1378 | JOT(8, "video streaming at %3lli.%03i fields per second\n", above, \ |
| 1379 | (remainder/1000)); |
| 1380 | } |
| 1381 | timeval0 = timeval; |
| 1382 | |
| 1383 | if (caches) |
| 1384 | JOT(8, "%i=caches\n", caches); |
| 1385 | return 0; |
| 1386 | } |
| 1387 | /*****************************************************************************/ |
| 1388 | struct signed_div_result |
| 1389 | signed_div(long long int above, long long int below) |
| 1390 | { |
| 1391 | struct signed_div_result sdr; |
| 1392 | |
| 1393 | if (((0 <= above) && (0 <= below)) || ((0 > above) && (0 > below))) { |
| 1394 | sdr.remainder = (unsigned long long int) do_div(above, below); |
| 1395 | sdr.quotient = (long long int) above; |
| 1396 | } else { |
| 1397 | if (0 > above) |
| 1398 | above = -above; |
| 1399 | if (0 > below) |
| 1400 | below = -below; |
| 1401 | sdr.remainder = (unsigned long long int) do_div(above, below); |
| 1402 | sdr.quotient = -((long long int) above); |
| 1403 | } |
| 1404 | return sdr; |
| 1405 | } |
| 1406 | /*****************************************************************************/ |
| 1407 | /*---------------------------------------------------------------------------*/ |
| 1408 | /* |
| 1409 | * DECIMATION AND COLOURSPACE CONVERSION. |
| 1410 | * |
| 1411 | * THIS ROUTINE REQUIRES THAT ALL THE DATA TO BE READ RESIDES ON ONE PAGE |
| 1412 | * AND THAT ALL THE DATA TO BE WRITTEN RESIDES ON ONE (DIFFERENT) PAGE. |
| 1413 | * THE CALLING ROUTINE MUST ENSURE THAT THIS REQUIREMENT IS MET, AND MUST |
| 1414 | * ALSO ENSURE THAT much IS EVEN. |
| 1415 | * |
| 1416 | * much BYTES ARE READ, AT LEAST (bytesperpixel * much)/2 BYTES ARE WRITTEN |
| 1417 | * IF THERE IS NO DECIMATION, HALF THIS AMOUNT IF THERE IS DECIMATION. |
| 1418 | * |
| 1419 | * mask IS ZERO WHEN NO SPECIAL BEHAVIOUR REQUIRED. OTHERWISE IT IS SET THUS: |
| 1420 | * 0x03 & mask = number of bytes to be written to cache instead of to |
| 1421 | * frame buffer |
| 1422 | * 0x04 & mask => use argument margin to set the chrominance for last pixel |
| 1423 | * 0x08 & mask => do not set the chrominance for last pixel |
| 1424 | * |
| 1425 | * YUV to RGB CONVERSION IS (OR SHOULD BE) ITU-R BT 601. |
| 1426 | * |
| 1427 | * THERE IS A LOT OF CODE REPETITION IN THIS ROUTINE IN ORDER TO AVOID |
| 1428 | * INEFFICIENT SWITCHING INSIDE INNER LOOPS. REARRANGING THE LOGIC TO |
| 1429 | * REDUCE CODE LENGTH WILL GENERALLY IMPAIR RUNTIME PERFORMANCE. BEWARE. |
| 1430 | */ |
| 1431 | /*---------------------------------------------------------------------------*/ |
| 1432 | int |
| 1433 | redaub(struct easycap *peasycap, void *pad, void *pex, int much, int more, \ |
| 1434 | __u8 mask, __u8 margin, bool isuy) |
| 1435 | { |
| 1436 | static __s32 ay[256], bu[256], rv[256], gu[256], gv[256]; |
| 1437 | static __u8 cache[8], *pcache; |
| 1438 | __u8 r, g, b, y, u, v, c, *p2, *p3, *pz, *pr; |
| 1439 | int bytesperpixel; |
| 1440 | bool byteswaporder, decimatepixel, last; |
| 1441 | int j, rump; |
| 1442 | __s32 s32; |
| 1443 | |
| 1444 | if (much % 2) { |
| 1445 | SAY("MISTAKE: much is odd\n"); |
| 1446 | return -EFAULT; |
| 1447 | } |
| 1448 | bytesperpixel = peasycap->bytesperpixel; |
| 1449 | byteswaporder = peasycap->byteswaporder; |
| 1450 | decimatepixel = peasycap->decimatepixel; |
| 1451 | |
| 1452 | /*---------------------------------------------------------------------------*/ |
| 1453 | if (!bu[255]) { |
| 1454 | for (j = 0; j < 112; j++) { |
| 1455 | s32 = (0xFF00 & (453 * j)) >> 8; |
| 1456 | bu[j + 128] = s32; bu[127 - j] = -s32; |
| 1457 | s32 = (0xFF00 & (359 * j)) >> 8; |
| 1458 | rv[j + 128] = s32; rv[127 - j] = -s32; |
| 1459 | s32 = (0xFF00 & (88 * j)) >> 8; |
| 1460 | gu[j + 128] = s32; gu[127 - j] = -s32; |
| 1461 | s32 = (0xFF00 & (183 * j)) >> 8; |
| 1462 | gv[j + 128] = s32; gv[127 - j] = -s32; |
| 1463 | } |
| 1464 | for (j = 0; j < 16; j++) { |
| 1465 | bu[j] = bu[16]; rv[j] = rv[16]; |
| 1466 | gu[j] = gu[16]; gv[j] = gv[16]; |
| 1467 | } |
| 1468 | for (j = 240; j < 256; j++) { |
| 1469 | bu[j] = bu[239]; rv[j] = rv[239]; |
| 1470 | gu[j] = gu[239]; gv[j] = gv[239]; |
| 1471 | } |
| 1472 | for (j = 16; j < 236; j++) |
| 1473 | ay[j] = j; |
| 1474 | for (j = 0; j < 16; j++) |
| 1475 | ay[j] = ay[16]; |
| 1476 | for (j = 236; j < 256; j++) |
| 1477 | ay[j] = ay[235]; |
| 1478 | JOT(8, "lookup tables are prepared\n"); |
| 1479 | } |
| 1480 | if ((__u8 *)NULL == pcache) |
| 1481 | pcache = &cache[0]; |
| 1482 | /*---------------------------------------------------------------------------*/ |
| 1483 | /* |
| 1484 | * TRANSFER CONTENTS OF CACHE TO THE FRAME BUFFER |
| 1485 | */ |
| 1486 | /*---------------------------------------------------------------------------*/ |
| 1487 | if (!pcache) { |
| 1488 | SAY("MISTAKE: pcache is NULL\n"); |
| 1489 | return -EFAULT; |
| 1490 | } |
| 1491 | |
| 1492 | if (pcache != &cache[0]) |
| 1493 | JOT(16, "cache has %i bytes\n", (int)(pcache - &cache[0])); |
| 1494 | p2 = &cache[0]; |
| 1495 | p3 = (__u8 *)pad - (int)(pcache - &cache[0]); |
| 1496 | while (p2 < pcache) { |
| 1497 | *p3++ = *p2; p2++; |
| 1498 | } |
| 1499 | pcache = &cache[0]; |
| 1500 | if (p3 != pad) { |
| 1501 | SAY("MISTAKE: pointer misalignment\n"); |
| 1502 | return -EFAULT; |
| 1503 | } |
| 1504 | /*---------------------------------------------------------------------------*/ |
| 1505 | rump = (int)(0x03 & mask); |
| 1506 | u = 0; v = 0; |
| 1507 | p2 = (__u8 *)pex; pz = p2 + much; pr = p3 + more; last = false; |
| 1508 | p2++; |
| 1509 | |
| 1510 | if (true == isuy) |
| 1511 | u = *(p2 - 1); |
| 1512 | else |
| 1513 | v = *(p2 - 1); |
| 1514 | |
| 1515 | if (rump) |
| 1516 | JOT(16, "%4i=much %4i=more %i=rump\n", much, more, rump); |
| 1517 | |
| 1518 | /*---------------------------------------------------------------------------*/ |
| 1519 | switch (bytesperpixel) { |
| 1520 | case 2: { |
| 1521 | if (false == decimatepixel) { |
| 1522 | memcpy(pad, pex, (size_t)much); |
| 1523 | if (false == byteswaporder) |
| 1524 | /*---------------------------------------------------*/ |
| 1525 | /* |
| 1526 | ** UYVY |
| 1527 | */ |
| 1528 | /*---------------------------------------------------*/ |
| 1529 | return 0; |
| 1530 | else { |
| 1531 | /*---------------------------------------------------*/ |
| 1532 | /* |
| 1533 | ** YUYV |
| 1534 | */ |
| 1535 | /*---------------------------------------------------*/ |
| 1536 | p3 = (__u8 *)pad; pz = p3 + much; |
| 1537 | while (pz > p3) { |
| 1538 | c = *p3; |
| 1539 | *p3 = *(p3 + 1); |
| 1540 | *(p3 + 1) = c; |
| 1541 | p3 += 2; |
| 1542 | } |
| 1543 | return 0; |
| 1544 | } |
| 1545 | } else { |
| 1546 | if (false == byteswaporder) { |
| 1547 | /*---------------------------------------------------*/ |
| 1548 | /* |
| 1549 | ** UYVY DECIMATED |
| 1550 | */ |
| 1551 | /*---------------------------------------------------*/ |
| 1552 | p2 = (__u8 *)pex; p3 = (__u8 *)pad; pz = p2 + much; |
| 1553 | while (pz > p2) { |
| 1554 | *p3 = *p2; |
| 1555 | *(p3 + 1) = *(p2 + 1); |
| 1556 | *(p3 + 2) = *(p2 + 2); |
| 1557 | *(p3 + 3) = *(p2 + 3); |
| 1558 | p3 += 4; p2 += 8; |
| 1559 | } |
| 1560 | return 0; |
| 1561 | } else { |
| 1562 | /*---------------------------------------------------*/ |
| 1563 | /* |
| 1564 | ** YUYV DECIMATED |
| 1565 | **/ |
| 1566 | /*---------------------------------------------------*/ |
| 1567 | p2 = (__u8 *)pex; p3 = (__u8 *)pad; pz = p2 + much; |
| 1568 | while (pz > p2) { |
| 1569 | *p3 = *(p2 + 1); |
| 1570 | *(p3 + 1) = *p2; |
| 1571 | *(p3 + 2) = *(p2 + 3); |
| 1572 | *(p3 + 3) = *(p2 + 2); |
| 1573 | p3 += 4; p2 += 8; |
| 1574 | } |
| 1575 | return 0; |
| 1576 | } |
| 1577 | } |
| 1578 | break; |
| 1579 | } |
| 1580 | case 3: |
| 1581 | { |
| 1582 | if (false == decimatepixel) { |
| 1583 | if (false == byteswaporder) { |
| 1584 | /*---------------------------------------------------*/ |
| 1585 | /* |
| 1586 | ** RGB |
| 1587 | **/ |
| 1588 | /*---------------------------------------------------*/ |
| 1589 | while (pz > p2) { |
| 1590 | if (pr <= (p3 + bytesperpixel)) |
| 1591 | last = true; |
| 1592 | else |
| 1593 | last = false; |
| 1594 | y = *p2; |
| 1595 | if ((true == last) && (0x0C & mask)) { |
| 1596 | if (0x04 & mask) { |
| 1597 | if (true == isuy) |
| 1598 | v = margin; |
| 1599 | else |
| 1600 | u = margin; |
| 1601 | } else |
| 1602 | if (0x08 & mask) |
| 1603 | ; |
| 1604 | } else { |
| 1605 | if (true == isuy) |
| 1606 | v = *(p2 + 1); |
| 1607 | else |
| 1608 | u = *(p2 + 1); |
| 1609 | } |
| 1610 | |
| 1611 | s32 = ay[(int)y] + rv[(int)v]; |
| 1612 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1613 | 0 : (__u8)s32); |
| 1614 | s32 = ay[(int)y] - gu[(int)u] - gv[(int)v]; |
| 1615 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1616 | 0 : (__u8)s32); |
| 1617 | s32 = ay[(int)y] + bu[(int)u]; |
| 1618 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1619 | 0 : (__u8)s32); |
| 1620 | |
| 1621 | if ((true == last) && rump) { |
| 1622 | pcache = &cache[0]; |
| 1623 | switch (bytesperpixel - rump) { |
| 1624 | case 1: { |
| 1625 | *p3 = r; |
| 1626 | *pcache++ = g; |
| 1627 | *pcache++ = b; |
| 1628 | break; |
| 1629 | } |
| 1630 | case 2: { |
| 1631 | *p3 = r; |
| 1632 | *(p3 + 1) = g; |
| 1633 | *pcache++ = b; |
| 1634 | break; |
| 1635 | } |
| 1636 | default: { |
| 1637 | SAY("MISTAKE: %i=rump\n", \ |
| 1638 | bytesperpixel - rump); |
| 1639 | return -EFAULT; |
| 1640 | } |
| 1641 | } |
| 1642 | } else { |
| 1643 | *p3 = r; |
| 1644 | *(p3 + 1) = g; |
| 1645 | *(p3 + 2) = b; |
| 1646 | } |
| 1647 | p2 += 2; |
| 1648 | if (true == isuy) |
| 1649 | isuy = false; |
| 1650 | else |
| 1651 | isuy = true; |
| 1652 | p3 += bytesperpixel; |
| 1653 | } |
| 1654 | return 0; |
| 1655 | } else { |
| 1656 | /*---------------------------------------------------*/ |
| 1657 | /* |
| 1658 | ** BGR |
| 1659 | */ |
| 1660 | /*---------------------------------------------------*/ |
| 1661 | while (pz > p2) { |
| 1662 | if (pr <= (p3 + bytesperpixel)) |
| 1663 | last = true; |
| 1664 | else |
| 1665 | last = false; |
| 1666 | y = *p2; |
| 1667 | if ((true == last) && (0x0C & mask)) { |
| 1668 | if (0x04 & mask) { |
| 1669 | if (true == isuy) |
| 1670 | v = margin; |
| 1671 | else |
| 1672 | u = margin; |
| 1673 | } |
| 1674 | else |
| 1675 | if (0x08 & mask) |
| 1676 | ; |
| 1677 | } else { |
| 1678 | if (true == isuy) |
| 1679 | v = *(p2 + 1); |
| 1680 | else |
| 1681 | u = *(p2 + 1); |
| 1682 | } |
| 1683 | |
| 1684 | s32 = ay[(int)y] + rv[(int)v]; |
| 1685 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1686 | 0 : (__u8)s32); |
| 1687 | s32 = ay[(int)y] - gu[(int)u] - gv[(int)v]; |
| 1688 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1689 | 0 : (__u8)s32); |
| 1690 | s32 = ay[(int)y] + bu[(int)u]; |
| 1691 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1692 | 0 : (__u8)s32); |
| 1693 | |
| 1694 | if ((true == last) && rump) { |
| 1695 | pcache = &cache[0]; |
| 1696 | switch (bytesperpixel - rump) { |
| 1697 | case 1: { |
| 1698 | *p3 = b; |
| 1699 | *pcache++ = g; |
| 1700 | *pcache++ = r; |
| 1701 | break; |
| 1702 | } |
| 1703 | case 2: { |
| 1704 | *p3 = b; |
| 1705 | *(p3 + 1) = g; |
| 1706 | *pcache++ = r; |
| 1707 | break; |
| 1708 | } |
| 1709 | default: { |
| 1710 | SAY("MISTAKE: %i=rump\n", \ |
| 1711 | bytesperpixel - rump); |
| 1712 | return -EFAULT; |
| 1713 | } |
| 1714 | } |
| 1715 | } else { |
| 1716 | *p3 = b; |
| 1717 | *(p3 + 1) = g; |
| 1718 | *(p3 + 2) = r; |
| 1719 | } |
| 1720 | p2 += 2; |
| 1721 | if (true == isuy) |
| 1722 | isuy = false; |
| 1723 | else |
| 1724 | isuy = true; |
| 1725 | p3 += bytesperpixel; |
| 1726 | } |
| 1727 | } |
| 1728 | return 0; |
| 1729 | } else { |
| 1730 | if (false == byteswaporder) { |
| 1731 | /*---------------------------------------------------*/ |
| 1732 | /* |
| 1733 | ** RGB DECIMATED |
| 1734 | */ |
| 1735 | /*---------------------------------------------------*/ |
| 1736 | while (pz > p2) { |
| 1737 | if (pr <= (p3 + bytesperpixel)) |
| 1738 | last = true; |
| 1739 | else |
| 1740 | last = false; |
| 1741 | y = *p2; |
| 1742 | if ((true == last) && (0x0C & mask)) { |
| 1743 | if (0x04 & mask) { |
| 1744 | if (true == isuy) |
| 1745 | v = margin; |
| 1746 | else |
| 1747 | u = margin; |
| 1748 | } else |
| 1749 | if (0x08 & mask) |
| 1750 | ; |
| 1751 | } else { |
| 1752 | if (true == isuy) |
| 1753 | v = *(p2 + 1); |
| 1754 | else |
| 1755 | u = *(p2 + 1); |
| 1756 | } |
| 1757 | |
| 1758 | if (true == isuy) { |
| 1759 | s32 = ay[(int)y] + rv[(int)v]; |
| 1760 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1761 | 0 : (__u8)s32); |
| 1762 | s32 = ay[(int)y] - gu[(int)u] - \ |
| 1763 | gv[(int)v]; |
| 1764 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1765 | 0 : (__u8)s32); |
| 1766 | s32 = ay[(int)y] + bu[(int)u]; |
| 1767 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1768 | 0 : (__u8)s32); |
| 1769 | |
| 1770 | if ((true == last) && rump) { |
| 1771 | pcache = &cache[0]; |
| 1772 | switch (bytesperpixel - rump) { |
| 1773 | case 1: { |
| 1774 | *p3 = r; |
| 1775 | *pcache++ = g; |
| 1776 | *pcache++ = b; |
| 1777 | break; |
| 1778 | } |
| 1779 | case 2: { |
| 1780 | *p3 = r; |
| 1781 | *(p3 + 1) = g; |
| 1782 | *pcache++ = b; |
| 1783 | break; |
| 1784 | } |
| 1785 | default: { |
| 1786 | SAY("MISTAKE: " \ |
| 1787 | "%i=rump\n", \ |
| 1788 | bytesperpixel - rump); |
| 1789 | return -EFAULT; |
| 1790 | } |
| 1791 | } |
| 1792 | } else { |
| 1793 | *p3 = r; |
| 1794 | *(p3 + 1) = g; |
| 1795 | *(p3 + 2) = b; |
| 1796 | } |
| 1797 | isuy = false; |
| 1798 | p3 += bytesperpixel; |
| 1799 | } else { |
| 1800 | isuy = true; |
| 1801 | } |
| 1802 | p2 += 2; |
| 1803 | } |
| 1804 | return 0; |
| 1805 | } else { |
| 1806 | /*---------------------------------------------------*/ |
| 1807 | /* |
| 1808 | * BGR DECIMATED |
| 1809 | */ |
| 1810 | /*---------------------------------------------------*/ |
| 1811 | while (pz > p2) { |
| 1812 | if (pr <= (p3 + bytesperpixel)) |
| 1813 | last = true; |
| 1814 | else |
| 1815 | last = false; |
| 1816 | y = *p2; |
| 1817 | if ((true == last) && (0x0C & mask)) { |
| 1818 | if (0x04 & mask) { |
| 1819 | if (true == isuy) |
| 1820 | v = margin; |
| 1821 | else |
| 1822 | u = margin; |
| 1823 | } else |
| 1824 | if (0x08 & mask) |
| 1825 | ; |
| 1826 | } else { |
| 1827 | if (true == isuy) |
| 1828 | v = *(p2 + 1); |
| 1829 | else |
| 1830 | u = *(p2 + 1); |
| 1831 | } |
| 1832 | |
| 1833 | if (true == isuy) { |
| 1834 | |
| 1835 | s32 = ay[(int)y] + rv[(int)v]; |
| 1836 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1837 | 0 : (__u8)s32); |
| 1838 | s32 = ay[(int)y] - gu[(int)u] - \ |
| 1839 | gv[(int)v]; |
| 1840 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1841 | 0 : (__u8)s32); |
| 1842 | s32 = ay[(int)y] + bu[(int)u]; |
| 1843 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1844 | 0 : (__u8)s32); |
| 1845 | |
| 1846 | if ((true == last) && rump) { |
| 1847 | pcache = &cache[0]; |
| 1848 | switch (bytesperpixel - rump) { |
| 1849 | case 1: { |
| 1850 | *p3 = b; |
| 1851 | *pcache++ = g; |
| 1852 | *pcache++ = r; |
| 1853 | break; |
| 1854 | } |
| 1855 | case 2: { |
| 1856 | *p3 = b; |
| 1857 | *(p3 + 1) = g; |
| 1858 | *pcache++ = r; |
| 1859 | break; |
| 1860 | } |
| 1861 | default: { |
| 1862 | SAY("MISTAKE: " \ |
| 1863 | "%i=rump\n", \ |
| 1864 | bytesperpixel - rump); |
| 1865 | return -EFAULT; |
| 1866 | } |
| 1867 | } |
| 1868 | } else { |
| 1869 | *p3 = b; |
| 1870 | *(p3 + 1) = g; |
| 1871 | *(p3 + 2) = r; |
| 1872 | } |
| 1873 | isuy = false; |
| 1874 | p3 += bytesperpixel; |
| 1875 | } |
| 1876 | else |
| 1877 | isuy = true; |
| 1878 | p2 += 2; |
| 1879 | } |
| 1880 | return 0; |
| 1881 | } |
| 1882 | } |
| 1883 | break; |
| 1884 | } |
| 1885 | case 4: |
| 1886 | { |
| 1887 | if (false == decimatepixel) { |
| 1888 | if (false == byteswaporder) { |
| 1889 | /*---------------------------------------------------*/ |
| 1890 | /* |
| 1891 | ** RGBA |
| 1892 | */ |
| 1893 | /*---------------------------------------------------*/ |
| 1894 | while (pz > p2) { |
| 1895 | if (pr <= (p3 + bytesperpixel)) |
| 1896 | last = true; |
| 1897 | else |
| 1898 | last = false; |
| 1899 | y = *p2; |
| 1900 | if ((true == last) && (0x0C & mask)) { |
| 1901 | if (0x04 & mask) { |
| 1902 | if (true == isuy) |
| 1903 | v = margin; |
| 1904 | else |
| 1905 | u = margin; |
| 1906 | } else |
| 1907 | if (0x08 & mask) |
| 1908 | ; |
| 1909 | } else { |
| 1910 | if (true == isuy) |
| 1911 | v = *(p2 + 1); |
| 1912 | else |
| 1913 | u = *(p2 + 1); |
| 1914 | } |
| 1915 | |
| 1916 | s32 = ay[(int)y] + rv[(int)v]; |
| 1917 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1918 | 0 : (__u8)s32); |
| 1919 | s32 = ay[(int)y] - gu[(int)u] - gv[(int)v]; |
| 1920 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1921 | 0 : (__u8)s32); |
| 1922 | s32 = ay[(int)y] + bu[(int)u]; |
| 1923 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 1924 | 0 : (__u8)s32); |
| 1925 | |
| 1926 | if ((true == last) && rump) { |
| 1927 | pcache = &cache[0]; |
| 1928 | switch (bytesperpixel - rump) { |
| 1929 | case 1: { |
| 1930 | *p3 = r; |
| 1931 | *pcache++ = g; |
| 1932 | *pcache++ = b; |
| 1933 | *pcache++ = 0; |
| 1934 | break; |
| 1935 | } |
| 1936 | case 2: { |
| 1937 | *p3 = r; |
| 1938 | *(p3 + 1) = g; |
| 1939 | *pcache++ = b; |
| 1940 | *pcache++ = 0; |
| 1941 | break; |
| 1942 | } |
| 1943 | case 3: { |
| 1944 | *p3 = r; |
| 1945 | *(p3 + 1) = g; |
| 1946 | *(p3 + 2) = b; |
| 1947 | *pcache++ = 0; |
| 1948 | break; |
| 1949 | } |
| 1950 | default: { |
| 1951 | SAY("MISTAKE: %i=rump\n", \ |
| 1952 | bytesperpixel - rump); |
| 1953 | return -EFAULT; |
| 1954 | } |
| 1955 | } |
| 1956 | } else { |
| 1957 | *p3 = r; |
| 1958 | *(p3 + 1) = g; |
| 1959 | *(p3 + 2) = b; |
| 1960 | *(p3 + 3) = 0; |
| 1961 | } |
| 1962 | p2 += 2; |
| 1963 | if (true == isuy) |
| 1964 | isuy = false; |
| 1965 | else |
| 1966 | isuy = true; |
| 1967 | p3 += bytesperpixel; |
| 1968 | } |
| 1969 | return 0; |
| 1970 | } else { |
| 1971 | /*---------------------------------------------------*/ |
| 1972 | /* |
| 1973 | ** BGRA |
| 1974 | */ |
| 1975 | /*---------------------------------------------------*/ |
| 1976 | while (pz > p2) { |
| 1977 | if (pr <= (p3 + bytesperpixel)) |
| 1978 | last = true; |
| 1979 | else |
| 1980 | last = false; |
| 1981 | y = *p2; |
| 1982 | if ((true == last) && (0x0C & mask)) { |
| 1983 | if (0x04 & mask) { |
| 1984 | if (true == isuy) |
| 1985 | v = margin; |
| 1986 | else |
| 1987 | u = margin; |
| 1988 | } else |
| 1989 | if (0x08 & mask) |
| 1990 | ; |
| 1991 | } else { |
| 1992 | if (true == isuy) |
| 1993 | v = *(p2 + 1); |
| 1994 | else |
| 1995 | u = *(p2 + 1); |
| 1996 | } |
| 1997 | |
| 1998 | s32 = ay[(int)y] + rv[(int)v]; |
| 1999 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2000 | 0 : (__u8)s32); |
| 2001 | s32 = ay[(int)y] - gu[(int)u] - gv[(int)v]; |
| 2002 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2003 | 0 : (__u8)s32); |
| 2004 | s32 = ay[(int)y] + bu[(int)u]; |
| 2005 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2006 | 0 : (__u8)s32); |
| 2007 | |
| 2008 | if ((true == last) && rump) { |
| 2009 | pcache = &cache[0]; |
| 2010 | switch (bytesperpixel - rump) { |
| 2011 | case 1: { |
| 2012 | *p3 = b; |
| 2013 | *pcache++ = g; |
| 2014 | *pcache++ = r; |
| 2015 | *pcache++ = 0; |
| 2016 | break; |
| 2017 | } |
| 2018 | case 2: { |
| 2019 | *p3 = b; |
| 2020 | *(p3 + 1) = g; |
| 2021 | *pcache++ = r; |
| 2022 | *pcache++ = 0; |
| 2023 | break; |
| 2024 | } |
| 2025 | case 3: { |
| 2026 | *p3 = b; |
| 2027 | *(p3 + 1) = g; |
| 2028 | *(p3 + 2) = r; |
| 2029 | *pcache++ = 0; |
| 2030 | break; |
| 2031 | } |
| 2032 | default: { |
| 2033 | SAY("MISTAKE: %i=rump\n", \ |
| 2034 | bytesperpixel - rump); |
| 2035 | return -EFAULT; |
| 2036 | } |
| 2037 | } |
| 2038 | } else { |
| 2039 | *p3 = b; |
| 2040 | *(p3 + 1) = g; |
| 2041 | *(p3 + 2) = r; |
| 2042 | *(p3 + 3) = 0; |
| 2043 | } |
| 2044 | p2 += 2; |
| 2045 | if (true == isuy) |
| 2046 | isuy = false; |
| 2047 | else |
| 2048 | isuy = true; |
| 2049 | p3 += bytesperpixel; |
| 2050 | } |
| 2051 | } |
| 2052 | return 0; |
| 2053 | } else { |
| 2054 | if (false == byteswaporder) { |
| 2055 | /*---------------------------------------------------*/ |
| 2056 | /* |
| 2057 | ** RGBA DECIMATED |
| 2058 | */ |
| 2059 | /*---------------------------------------------------*/ |
| 2060 | while (pz > p2) { |
| 2061 | if (pr <= (p3 + bytesperpixel)) |
| 2062 | last = true; |
| 2063 | else |
| 2064 | last = false; |
| 2065 | y = *p2; |
| 2066 | if ((true == last) && (0x0C & mask)) { |
| 2067 | if (0x04 & mask) { |
| 2068 | if (true == isuy) |
| 2069 | v = margin; |
| 2070 | else |
| 2071 | u = margin; |
| 2072 | } else |
| 2073 | if (0x08 & mask) |
| 2074 | ; |
| 2075 | } else { |
| 2076 | if (true == isuy) |
| 2077 | v = *(p2 + 1); |
| 2078 | else |
| 2079 | u = *(p2 + 1); |
| 2080 | } |
| 2081 | |
| 2082 | if (true == isuy) { |
| 2083 | |
| 2084 | s32 = ay[(int)y] + rv[(int)v]; |
| 2085 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2086 | 0 : (__u8)s32); |
| 2087 | s32 = ay[(int)y] - gu[(int)u] - \ |
| 2088 | gv[(int)v]; |
| 2089 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2090 | 0 : (__u8)s32); |
| 2091 | s32 = ay[(int)y] + bu[(int)u]; |
| 2092 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2093 | 0 : (__u8)s32); |
| 2094 | |
| 2095 | if ((true == last) && rump) { |
| 2096 | pcache = &cache[0]; |
| 2097 | switch (bytesperpixel - rump) { |
| 2098 | case 1: { |
| 2099 | *p3 = r; |
| 2100 | *pcache++ = g; |
| 2101 | *pcache++ = b; |
| 2102 | *pcache++ = 0; |
| 2103 | break; |
| 2104 | } |
| 2105 | case 2: { |
| 2106 | *p3 = r; |
| 2107 | *(p3 + 1) = g; |
| 2108 | *pcache++ = b; |
| 2109 | *pcache++ = 0; |
| 2110 | break; |
| 2111 | } |
| 2112 | case 3: { |
| 2113 | *p3 = r; |
| 2114 | *(p3 + 1) = g; |
| 2115 | *(p3 + 2) = b; |
| 2116 | *pcache++ = 0; |
| 2117 | break; |
| 2118 | } |
| 2119 | default: { |
| 2120 | SAY("MISTAKE: " \ |
| 2121 | "%i=rump\n", \ |
| 2122 | bytesperpixel - \ |
| 2123 | rump); |
| 2124 | return -EFAULT; |
| 2125 | } |
| 2126 | } |
| 2127 | } else { |
| 2128 | *p3 = r; |
| 2129 | *(p3 + 1) = g; |
| 2130 | *(p3 + 2) = b; |
| 2131 | *(p3 + 3) = 0; |
| 2132 | } |
| 2133 | isuy = false; |
| 2134 | p3 += bytesperpixel; |
| 2135 | } else |
| 2136 | isuy = true; |
| 2137 | p2 += 2; |
| 2138 | } |
| 2139 | return 0; |
| 2140 | } else { |
| 2141 | /*---------------------------------------------------*/ |
| 2142 | /* |
| 2143 | ** BGRA DECIMATED |
| 2144 | */ |
| 2145 | /*---------------------------------------------------*/ |
| 2146 | while (pz > p2) { |
| 2147 | if (pr <= (p3 + bytesperpixel)) |
| 2148 | last = true; |
| 2149 | else |
| 2150 | last = false; |
| 2151 | y = *p2; |
| 2152 | if ((true == last) && (0x0C & mask)) { |
| 2153 | if (0x04 & mask) { |
| 2154 | if (true == isuy) |
| 2155 | v = margin; |
| 2156 | else |
| 2157 | u = margin; |
| 2158 | } else |
| 2159 | if (0x08 & mask) |
| 2160 | ; |
| 2161 | } else { |
| 2162 | if (true == isuy) |
| 2163 | v = *(p2 + 1); |
| 2164 | else |
| 2165 | u = *(p2 + 1); |
| 2166 | } |
| 2167 | |
| 2168 | if (true == isuy) { |
| 2169 | s32 = ay[(int)y] + rv[(int)v]; |
| 2170 | r = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2171 | 0 : (__u8)s32); |
| 2172 | s32 = ay[(int)y] - gu[(int)u] - \ |
| 2173 | gv[(int)v]; |
| 2174 | g = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2175 | 0 : (__u8)s32); |
| 2176 | s32 = ay[(int)y] + bu[(int)u]; |
| 2177 | b = (255 < s32) ? 255 : ((0 > s32) ? \ |
| 2178 | 0 : (__u8)s32); |
| 2179 | |
| 2180 | if ((true == last) && rump) { |
| 2181 | pcache = &cache[0]; |
| 2182 | switch (bytesperpixel - rump) { |
| 2183 | case 1: { |
| 2184 | *p3 = b; |
| 2185 | *pcache++ = g; |
| 2186 | *pcache++ = r; |
| 2187 | *pcache++ = 0; |
| 2188 | break; |
| 2189 | } |
| 2190 | case 2: { |
| 2191 | *p3 = b; |
| 2192 | *(p3 + 1) = g; |
| 2193 | *pcache++ = r; |
| 2194 | *pcache++ = 0; |
| 2195 | break; |
| 2196 | } |
| 2197 | case 3: { |
| 2198 | *p3 = b; |
| 2199 | *(p3 + 1) = g; |
| 2200 | *(p3 + 2) = r; |
| 2201 | *pcache++ = 0; |
| 2202 | break; |
| 2203 | } |
| 2204 | default: { |
| 2205 | SAY("MISTAKE: " \ |
| 2206 | "%i=rump\n", \ |
| 2207 | bytesperpixel - rump); |
| 2208 | return -EFAULT; |
| 2209 | } |
| 2210 | } |
| 2211 | } else { |
| 2212 | *p3 = b; |
| 2213 | *(p3 + 1) = g; |
| 2214 | *(p3 + 2) = r; |
| 2215 | *(p3 + 3) = 0; |
| 2216 | } |
| 2217 | isuy = false; |
| 2218 | p3 += bytesperpixel; |
| 2219 | } else |
| 2220 | isuy = true; |
| 2221 | p2 += 2; |
| 2222 | } |
| 2223 | return 0; |
| 2224 | } |
| 2225 | } |
| 2226 | break; |
| 2227 | } |
| 2228 | default: { |
| 2229 | SAY("MISTAKE: %i=bytesperpixel\n", bytesperpixel); |
| 2230 | return -EFAULT; |
| 2231 | } |
| 2232 | } |
| 2233 | return 0; |
| 2234 | } |
| 2235 | /*****************************************************************************/ |
| 2236 | void |
| 2237 | debrief(struct easycap *peasycap) |
| 2238 | { |
| 2239 | if ((struct usb_device *)NULL != peasycap->pusb_device) { |
| 2240 | check_stk(peasycap->pusb_device); |
| 2241 | check_saa(peasycap->pusb_device); |
| 2242 | sayreadonly(peasycap); |
| 2243 | SAY("%i=peasycap->field_fill\n", peasycap->field_fill); |
| 2244 | SAY("%i=peasycap->field_read\n", peasycap->field_read); |
| 2245 | SAY("%i=peasycap->frame_fill\n", peasycap->frame_fill); |
| 2246 | SAY("%i=peasycap->frame_read\n", peasycap->frame_read); |
| 2247 | } |
| 2248 | return; |
| 2249 | } |
| 2250 | /*****************************************************************************/ |
| 2251 | void |
| 2252 | sayreadonly(struct easycap *peasycap) |
| 2253 | { |
| 2254 | static int done; |
| 2255 | int got00, got1F, got60, got61, got62; |
| 2256 | |
| 2257 | if ((!done) && ((struct usb_device *)NULL != peasycap->pusb_device)) { |
| 2258 | done = 1; |
| 2259 | got00 = read_saa(peasycap->pusb_device, 0x00); |
| 2260 | got1F = read_saa(peasycap->pusb_device, 0x1F); |
| 2261 | got60 = read_saa(peasycap->pusb_device, 0x60); |
| 2262 | got61 = read_saa(peasycap->pusb_device, 0x61); |
| 2263 | got62 = read_saa(peasycap->pusb_device, 0x62); |
| 2264 | SAY("0x%02X=reg0x00 0x%02X=reg0x1F\n", got00, got1F); |
| 2265 | SAY("0x%02X=reg0x60 0x%02X=reg0x61 0x%02X=reg0x62\n", \ |
| 2266 | got60, got61, got62); |
| 2267 | } |
| 2268 | return; |
| 2269 | } |
| 2270 | /*****************************************************************************/ |
| 2271 | /*---------------------------------------------------------------------------*/ |
| 2272 | /* |
| 2273 | * SEE CORBET ET AL. "LINUX DEVICE DRIVERS", 3rd EDITION, PAGES 430-434 |
| 2274 | */ |
| 2275 | /*---------------------------------------------------------------------------*/ |
| 2276 | int easycap_mmap(struct file *file, struct vm_area_struct *pvma) |
| 2277 | { |
| 2278 | |
| 2279 | JOT(8, "\n"); |
| 2280 | |
| 2281 | pvma->vm_ops = &easycap_vm_ops; |
| 2282 | pvma->vm_flags |= VM_RESERVED; |
| 2283 | if (NULL != file) |
| 2284 | pvma->vm_private_data = file->private_data; |
| 2285 | easycap_vma_open(pvma); |
| 2286 | return 0; |
| 2287 | } |
| 2288 | /*****************************************************************************/ |
| 2289 | void |
| 2290 | easycap_vma_open(struct vm_area_struct *pvma) |
| 2291 | { |
| 2292 | struct easycap *peasycap; |
| 2293 | |
| 2294 | peasycap = pvma->vm_private_data; |
| 2295 | if (NULL != peasycap) |
| 2296 | peasycap->vma_many++; |
| 2297 | |
| 2298 | JOT(8, "%i=peasycap->vma_many\n", peasycap->vma_many); |
| 2299 | |
| 2300 | return; |
| 2301 | } |
| 2302 | /*****************************************************************************/ |
| 2303 | void |
| 2304 | easycap_vma_close(struct vm_area_struct *pvma) |
| 2305 | { |
| 2306 | struct easycap *peasycap; |
| 2307 | |
| 2308 | peasycap = pvma->vm_private_data; |
| 2309 | if (NULL != peasycap) { |
| 2310 | peasycap->vma_many--; |
| 2311 | JOT(8, "%i=peasycap->vma_many\n", peasycap->vma_many); |
| 2312 | } |
| 2313 | return; |
| 2314 | } |
| 2315 | /*****************************************************************************/ |
| 2316 | int |
| 2317 | easycap_vma_fault(struct vm_area_struct *pvma, struct vm_fault *pvmf) |
| 2318 | { |
| 2319 | int k, m, retcode; |
| 2320 | void *pbuf; |
| 2321 | struct page *page; |
| 2322 | struct easycap *peasycap; |
| 2323 | |
| 2324 | retcode = VM_FAULT_NOPAGE; |
| 2325 | pbuf = (void *)NULL; |
| 2326 | page = (struct page *)NULL; |
| 2327 | |
| 2328 | if (NULL == pvma) { |
| 2329 | SAY("pvma is NULL\n"); |
| 2330 | return retcode; |
| 2331 | } |
| 2332 | if (NULL == pvmf) { |
| 2333 | SAY("pvmf is NULL\n"); |
| 2334 | return retcode; |
| 2335 | } |
| 2336 | |
| 2337 | k = (pvmf->pgoff) / (FRAME_BUFFER_SIZE/PAGE_SIZE); |
| 2338 | m = (pvmf->pgoff) % (FRAME_BUFFER_SIZE/PAGE_SIZE); |
| 2339 | |
| 2340 | if (!m) |
| 2341 | JOT(4, "%4i=k, %4i=m\n", k, m); |
| 2342 | else |
| 2343 | JOT(16, "%4i=k, %4i=m\n", k, m); |
| 2344 | |
| 2345 | if ((0 > k) || (FRAME_BUFFER_MANY <= k)) { |
| 2346 | SAY("ERROR: buffer index %i out of range\n", k); |
| 2347 | return retcode; |
| 2348 | } |
| 2349 | if ((0 > m) || (FRAME_BUFFER_SIZE/PAGE_SIZE <= m)) { |
| 2350 | SAY("ERROR: page number %i out of range\n", m); |
| 2351 | return retcode; |
| 2352 | } |
| 2353 | peasycap = pvma->vm_private_data; |
| 2354 | if (NULL == peasycap) { |
| 2355 | SAY("ERROR: peasycap is NULL\n"); |
| 2356 | return retcode; |
| 2357 | } |
| 2358 | mutex_lock(&(peasycap->mutex_mmap_video[0])); |
| 2359 | /*---------------------------------------------------------------------------*/ |
| 2360 | pbuf = peasycap->frame_buffer[k][m].pgo; |
| 2361 | if (NULL == pbuf) { |
| 2362 | SAY("ERROR: pbuf is NULL\n"); |
| 2363 | goto finish; |
| 2364 | } |
| 2365 | page = virt_to_page(pbuf); |
| 2366 | if (NULL == page) { |
| 2367 | SAY("ERROR: page is NULL\n"); |
| 2368 | goto finish; |
| 2369 | } |
| 2370 | get_page(page); |
| 2371 | /*---------------------------------------------------------------------------*/ |
| 2372 | finish: |
| 2373 | mutex_unlock(&(peasycap->mutex_mmap_video[0])); |
| 2374 | if (NULL == page) { |
| 2375 | SAY("ERROR: page is NULL after get_page(page)\n"); |
| 2376 | } else { |
| 2377 | pvmf->page = page; |
| 2378 | retcode = VM_FAULT_MINOR; |
| 2379 | } |
| 2380 | return retcode; |
| 2381 | } |
| 2382 | /*****************************************************************************/ |
| 2383 | /*---------------------------------------------------------------------------*/ |
| 2384 | /* |
| 2385 | * ON COMPLETION OF A VIDEO URB ITS DATA IS COPIED TO THE FIELD BUFFERS |
| 2386 | * PROVIDED peasycap->video_idle IS ZER0. REGARDLESS OF THIS BEING TRUE, |
| 2387 | * IT IS RESUBMITTED PROVIDED peasycap->video_isoc_streaming IS NOT ZERO. |
| 2388 | * |
| 2389 | * THIS FUNCTION IS AN INTERRUPT SERVICE ROUTINE AND MUST NOT SLEEP. |
| 2390 | * |
| 2391 | * INFORMATION ABOUT THE VALIDITY OF THE CONTENTS OF THE FIELD BUFFER ARE |
| 2392 | * STORED IN THE TWO-BYTE STATUS PARAMETER |
| 2393 | * peasycap->field_buffer[peasycap->field_fill][0].kount |
| 2394 | * NOTICE THAT THE INFORMATION IS STORED ONLY WITH PAGE 0 OF THE FIELD BUFFER. |
| 2395 | * |
| 2396 | * THE LOWER BYTE CONTAINS THE FIELD PARITY BYTE FURNISHED BY THE SAA7113H |
| 2397 | * CHIP. |
| 2398 | * |
| 2399 | * THE UPPER BYTE IS ZERO IF NO PROBLEMS, OTHERWISE: |
| 2400 | * 0 != (kount & 0x8000) => AT LEAST ONE URB COMPLETED WITH ERRORS |
| 2401 | * 0 != (kount & 0x4000) => BUFFER HAS TOO MUCH DATA |
| 2402 | * 0 != (kount & 0x2000) => BUFFER HAS NOT ENOUGH DATA |
| 2403 | * 0 != (kount & 0x0400) => FIELD WAS SUBMITTED BY BRIDGER ROUTINE |
| 2404 | * 0 != (kount & 0x0200) => FIELD BUFFER NOT YET CHECKED |
| 2405 | * 0 != (kount & 0x0100) => BUFFER HAS TWO EXTRA BYTES - WHY? |
| 2406 | */ |
| 2407 | /*---------------------------------------------------------------------------*/ |
| 2408 | void |
| 2409 | easycap_complete(struct urb *purb) |
| 2410 | { |
| 2411 | static int mt; |
| 2412 | struct easycap *peasycap; |
| 2413 | struct data_buffer *pfield_buffer; |
| 2414 | char errbuf[16]; |
| 2415 | int i, more, much, leap, rc, last; |
| 2416 | int videofieldamount; |
| 2417 | unsigned int override; |
| 2418 | int framestatus, framelength, frameactual, frameoffset; |
| 2419 | __u8 *pu; |
| 2420 | #if defined(BRIDGER) |
| 2421 | struct timeval timeval; |
| 2422 | long long usec; |
| 2423 | #endif /*BRIDGER*/ |
| 2424 | |
| 2425 | if (NULL == purb) { |
| 2426 | SAY("ERROR: easycap_complete(): purb is NULL\n"); |
| 2427 | return; |
| 2428 | } |
| 2429 | peasycap = purb->context; |
| 2430 | if (NULL == peasycap) { |
| 2431 | SAY("ERROR: easycap_complete(): peasycap is NULL\n"); |
| 2432 | return; |
| 2433 | } |
| 2434 | |
| 2435 | if (peasycap->video_eof) |
| 2436 | return; |
| 2437 | |
| 2438 | for (i = 0; i < VIDEO_ISOC_BUFFER_MANY; i++) |
| 2439 | if (purb->transfer_buffer == peasycap->video_isoc_buffer[i].pgo) |
| 2440 | break; |
| 2441 | JOT(16, "%2i=urb\n", i); |
| 2442 | last = peasycap->video_isoc_sequence; |
| 2443 | if ((((VIDEO_ISOC_BUFFER_MANY - 1) == last) && \ |
| 2444 | (0 != i)) || \ |
| 2445 | (((VIDEO_ISOC_BUFFER_MANY - 1) != last) && \ |
| 2446 | ((last + 1) != i))) { |
| 2447 | SAY("ERROR: out-of-order urbs %i,%i ... continuing\n", last, i); |
| 2448 | } |
| 2449 | peasycap->video_isoc_sequence = i; |
| 2450 | |
| 2451 | if (peasycap->video_idle) { |
| 2452 | JOT(16, "%i=video_idle %i=video_isoc_streaming\n", \ |
| 2453 | peasycap->video_idle, peasycap->video_isoc_streaming); |
| 2454 | if (peasycap->video_isoc_streaming) { |
| 2455 | rc = usb_submit_urb(purb, GFP_ATOMIC); |
| 2456 | if (0 != rc) { |
| 2457 | SAY("ERROR: while %i=video_idle, " \ |
| 2458 | "usb_submit_urb() failed with rc:\n", \ |
| 2459 | peasycap->video_idle); |
| 2460 | switch (rc) { |
| 2461 | case -ENOMEM: { |
| 2462 | SAY("ENOMEM\n"); |
| 2463 | break; |
| 2464 | } |
| 2465 | case -ENODEV: { |
| 2466 | SAY("ENODEV\n"); |
| 2467 | break; |
| 2468 | } |
| 2469 | case -ENXIO: { |
| 2470 | SAY("ENXIO\n"); |
| 2471 | break; |
| 2472 | } |
| 2473 | case -EINVAL: { |
| 2474 | SAY("EINVAL\n"); |
| 2475 | break; |
| 2476 | } |
| 2477 | case -EAGAIN: { |
| 2478 | SAY("EAGAIN\n"); |
| 2479 | break; |
| 2480 | } |
| 2481 | case -EFBIG: { |
| 2482 | SAY("EFBIG\n"); |
| 2483 | break; |
| 2484 | } |
| 2485 | case -EPIPE: { |
| 2486 | SAY("EPIPE\n"); |
| 2487 | break; |
| 2488 | } |
| 2489 | case -EMSGSIZE: { |
| 2490 | SAY("EMSGSIZE\n"); |
| 2491 | break; |
| 2492 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 2493 | case -ENOSPC: { |
| 2494 | SAY("ENOSPC\n"); |
| 2495 | break; |
| 2496 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 2497 | default: { |
| 2498 | SAY("0x%08X\n", rc); |
| 2499 | break; |
| 2500 | } |
| 2501 | } |
| 2502 | } |
| 2503 | } |
| 2504 | return; |
| 2505 | } |
| 2506 | override = 0; |
| 2507 | /*---------------------------------------------------------------------------*/ |
| 2508 | if (FIELD_BUFFER_MANY <= peasycap->field_fill) { |
| 2509 | SAY("ERROR: bad peasycap->field_fill\n"); |
| 2510 | return; |
| 2511 | } |
| 2512 | if (purb->status) { |
| 2513 | if ((-ESHUTDOWN == purb->status) || (-ENOENT == purb->status)) { |
| 2514 | JOT(8, "urb status -ESHUTDOWN or -ENOENT\n"); |
| 2515 | return; |
| 2516 | } |
| 2517 | |
| 2518 | (peasycap->field_buffer[peasycap->field_fill][0].kount) |= 0x8000 ; |
| 2519 | SAY("ERROR: bad urb status:\n"); |
| 2520 | switch (purb->status) { |
| 2521 | case -EINPROGRESS: { |
| 2522 | SAY("-EINPROGRESS\n"); break; |
| 2523 | } |
| 2524 | case -ENOSR: { |
| 2525 | SAY("-ENOSR\n"); break; |
| 2526 | } |
| 2527 | case -EPIPE: { |
| 2528 | SAY("-EPIPE\n"); break; |
| 2529 | } |
| 2530 | case -EOVERFLOW: { |
| 2531 | SAY("-EOVERFLOW\n"); break; |
| 2532 | } |
| 2533 | case -EPROTO: { |
| 2534 | SAY("-EPROTO\n"); break; |
| 2535 | } |
| 2536 | case -EILSEQ: { |
| 2537 | SAY("-EILSEQ\n"); break; |
| 2538 | } |
| 2539 | case -ETIMEDOUT: { |
| 2540 | SAY("-ETIMEDOUT\n"); break; |
| 2541 | } |
| 2542 | case -EMSGSIZE: { |
| 2543 | SAY("-EMSGSIZE\n"); break; |
| 2544 | } |
| 2545 | case -EOPNOTSUPP: { |
| 2546 | SAY("-EOPNOTSUPP\n"); break; |
| 2547 | } |
| 2548 | case -EPFNOSUPPORT: { |
| 2549 | SAY("-EPFNOSUPPORT\n"); break; |
| 2550 | } |
| 2551 | case -EAFNOSUPPORT: { |
| 2552 | SAY("-EAFNOSUPPORT\n"); break; |
| 2553 | } |
| 2554 | case -EADDRINUSE: { |
| 2555 | SAY("-EADDRINUSE\n"); break; |
| 2556 | } |
| 2557 | case -EADDRNOTAVAIL: { |
| 2558 | SAY("-EADDRNOTAVAIL\n"); break; |
| 2559 | } |
| 2560 | case -ENOBUFS: { |
| 2561 | SAY("-ENOBUFS\n"); break; |
| 2562 | } |
| 2563 | case -EISCONN: { |
| 2564 | SAY("-EISCONN\n"); break; |
| 2565 | } |
| 2566 | case -ENOTCONN: { |
| 2567 | SAY("-ENOTCONN\n"); break; |
| 2568 | } |
| 2569 | case -ESHUTDOWN: { |
| 2570 | SAY("-ESHUTDOWN\n"); break; |
| 2571 | } |
| 2572 | case -ENOENT: { |
| 2573 | SAY("-ENOENT\n"); break; |
| 2574 | } |
| 2575 | case -ECONNRESET: { |
| 2576 | SAY("-ECONNRESET\n"); break; |
| 2577 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 2578 | case -ENOSPC: { |
| 2579 | SAY("ENOSPC\n"); break; |
| 2580 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 2581 | default: { |
| 2582 | SAY("unknown error code 0x%08X\n", purb->status); break; |
| 2583 | } |
| 2584 | } |
| 2585 | /*---------------------------------------------------------------------------*/ |
| 2586 | } else { |
| 2587 | for (i = 0; i < purb->number_of_packets; i++) { |
| 2588 | if (0 != purb->iso_frame_desc[i].status) { |
| 2589 | (peasycap->field_buffer\ |
| 2590 | [peasycap->field_fill][0].kount) |= 0x8000 ; |
| 2591 | switch (purb->iso_frame_desc[i].status) { |
| 2592 | case 0: { |
| 2593 | strcpy(&errbuf[0], "OK"); break; |
| 2594 | } |
| 2595 | case -ENOENT: { |
| 2596 | strcpy(&errbuf[0], "-ENOENT"); break; |
| 2597 | } |
| 2598 | case -EINPROGRESS: { |
| 2599 | strcpy(&errbuf[0], "-EINPROGRESS"); break; |
| 2600 | } |
| 2601 | case -EPROTO: { |
| 2602 | strcpy(&errbuf[0], "-EPROTO"); break; |
| 2603 | } |
| 2604 | case -EILSEQ: { |
| 2605 | strcpy(&errbuf[0], "-EILSEQ"); break; |
| 2606 | } |
| 2607 | case -ETIME: { |
| 2608 | strcpy(&errbuf[0], "-ETIME"); break; |
| 2609 | } |
| 2610 | case -ETIMEDOUT: { |
| 2611 | strcpy(&errbuf[0], "-ETIMEDOUT"); break; |
| 2612 | } |
| 2613 | case -EPIPE: { |
| 2614 | strcpy(&errbuf[0], "-EPIPE"); break; |
| 2615 | } |
| 2616 | case -ECOMM: { |
| 2617 | strcpy(&errbuf[0], "-ECOMM"); break; |
| 2618 | } |
| 2619 | case -ENOSR: { |
| 2620 | strcpy(&errbuf[0], "-ENOSR"); break; |
| 2621 | } |
| 2622 | case -EOVERFLOW: { |
| 2623 | strcpy(&errbuf[0], "-EOVERFLOW"); break; |
| 2624 | } |
| 2625 | case -EREMOTEIO: { |
| 2626 | strcpy(&errbuf[0], "-EREMOTEIO"); break; |
| 2627 | } |
| 2628 | case -ENODEV: { |
| 2629 | strcpy(&errbuf[0], "-ENODEV"); break; |
| 2630 | } |
| 2631 | case -EXDEV: { |
| 2632 | strcpy(&errbuf[0], "-EXDEV"); break; |
| 2633 | } |
| 2634 | case -EINVAL: { |
| 2635 | strcpy(&errbuf[0], "-EINVAL"); break; |
| 2636 | } |
| 2637 | case -ECONNRESET: { |
| 2638 | strcpy(&errbuf[0], "-ECONNRESET"); break; |
| 2639 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 2640 | case -ENOSPC: { |
| 2641 | SAY("ENOSPC\n"); break; |
| 2642 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 2643 | case -ESHUTDOWN: { |
| 2644 | strcpy(&errbuf[0], "-ESHUTDOWN"); break; |
| 2645 | } |
| 2646 | default: { |
| 2647 | strcpy(&errbuf[0], "unknown error"); break; |
| 2648 | } |
| 2649 | } |
| 2650 | } |
| 2651 | framestatus = purb->iso_frame_desc[i].status; |
| 2652 | framelength = purb->iso_frame_desc[i].length; |
| 2653 | frameactual = purb->iso_frame_desc[i].actual_length; |
| 2654 | frameoffset = purb->iso_frame_desc[i].offset; |
| 2655 | |
| 2656 | JOT(16, "frame[%2i]:" \ |
| 2657 | "%4i=status " \ |
| 2658 | "%4i=actual " \ |
| 2659 | "%4i=length " \ |
| 2660 | "%5i=offset\n", \ |
| 2661 | i, framestatus, frameactual, framelength, frameoffset); |
| 2662 | if (!purb->iso_frame_desc[i].status) { |
| 2663 | more = purb->iso_frame_desc[i].actual_length; |
| 2664 | pfield_buffer = &peasycap->field_buffer\ |
| 2665 | [peasycap->field_fill][peasycap->field_page]; |
| 2666 | videofieldamount = (peasycap->field_page * \ |
| 2667 | PAGE_SIZE) + \ |
| 2668 | (int)(pfield_buffer->pto - pfield_buffer->pgo); |
| 2669 | if (4 == more) |
| 2670 | mt++; |
| 2671 | if (4 < more) { |
| 2672 | if (mt) { |
| 2673 | JOT(8, "%4i empty video urb frames\n", mt); |
| 2674 | mt = 0; |
| 2675 | } |
| 2676 | if (FIELD_BUFFER_MANY <= peasycap->field_fill) { |
| 2677 | SAY("ERROR: bad peasycap->field_fill\n"); |
| 2678 | return; |
| 2679 | } |
| 2680 | if (FIELD_BUFFER_SIZE/PAGE_SIZE <= \ |
| 2681 | peasycap->field_page) { |
| 2682 | SAY("ERROR: bad peasycap->field_page\n"); |
| 2683 | return; |
| 2684 | } |
| 2685 | pfield_buffer = &peasycap->field_buffer\ |
| 2686 | [peasycap->field_fill][peasycap->field_page]; |
| 2687 | pu = (__u8 *)(purb->transfer_buffer + \ |
| 2688 | purb->iso_frame_desc[i].offset); |
| 2689 | if (0x80 & *pu) |
| 2690 | leap = 8; |
| 2691 | else |
| 2692 | leap = 4; |
| 2693 | /*--------------------------------------------------------------------------*/ |
| 2694 | /* |
| 2695 | * EIGHT-BYTE END-OF-VIDEOFIELD MARKER. |
| 2696 | * NOTE: A SUCCESSION OF URB FRAMES FOLLOWING THIS ARE EMPTY, |
| 2697 | * CORRESPONDING TO THE FIELD FLYBACK (VERTICAL BLANKING) PERIOD. |
| 2698 | * |
| 2699 | * PROVIDED THE FIELD BUFFER CONTAINS GOOD DATA AS INDICATED BY A ZERO UPPER |
| 2700 | * BYTE OF |
| 2701 | * peasycap->field_buffer[peasycap->field_fill][0].kount |
| 2702 | * THE CONTENTS OF THE FIELD BUFFER ARE OFFERED TO dqbuf(), field_read IS |
| 2703 | * UPDATED AND field_fill IS BUMPED. IF THE FIELD BUFFER CONTAINS BAD DATA |
| 2704 | * NOTHING IS OFFERED TO dqbuf(). |
| 2705 | * |
| 2706 | * THE DECISION ON WHETHER THE PARITY OF THE OFFERED FIELD BUFFER IS RIGHT |
| 2707 | * RESTS WITH dqbuf(). |
| 2708 | */ |
| 2709 | /*---------------------------------------------------------------------------*/ |
| 2710 | if ((8 == more) || override) { |
| 2711 | if (videofieldamount > \ |
| 2712 | peasycap->videofieldamount) { |
| 2713 | if (2 == videofieldamount - \ |
| 2714 | peasycap->\ |
| 2715 | videofieldamount) |
| 2716 | (peasycap->field_buffer\ |
| 2717 | [peasycap->field_fill]\ |
| 2718 | [0].kount) |= 0x0100; |
| 2719 | else |
| 2720 | (peasycap->field_buffer\ |
| 2721 | [peasycap->field_fill]\ |
| 2722 | [0].kount) |= 0x4000; |
| 2723 | } else if (videofieldamount < \ |
| 2724 | peasycap->\ |
| 2725 | videofieldamount) { |
| 2726 | (peasycap->field_buffer\ |
| 2727 | [peasycap->field_fill]\ |
| 2728 | [0].kount) |= 0x2000; |
| 2729 | } |
| 2730 | if (!(0xFF00 & peasycap->field_buffer\ |
| 2731 | [peasycap->field_fill]\ |
| 2732 | [0].kount)) { |
| 2733 | (peasycap->video_junk)--; |
| 2734 | if (-16 > peasycap->video_junk) |
| 2735 | peasycap->video_junk = -16; |
| 2736 | peasycap->field_read = \ |
| 2737 | (peasycap->\ |
| 2738 | field_fill)++; |
| 2739 | |
| 2740 | if (FIELD_BUFFER_MANY <= \ |
| 2741 | peasycap->field_fill) |
| 2742 | peasycap->field_fill = 0; |
| 2743 | peasycap->field_page = 0; |
| 2744 | pfield_buffer = &peasycap->\ |
| 2745 | field_buffer\ |
| 2746 | [peasycap->field_fill]\ |
| 2747 | [peasycap->field_page]; |
| 2748 | pfield_buffer->pto = \ |
| 2749 | pfield_buffer->pgo; |
| 2750 | |
| 2751 | JOT(8, "bumped to: %i=peasycap->" \ |
| 2752 | "field_fill %i=parity\n", \ |
| 2753 | peasycap->field_fill, \ |
| 2754 | 0x00FF & pfield_buffer->kount); |
| 2755 | JOT(8, "field buffer %i has %i " \ |
| 2756 | "bytes fit to be read\n", \ |
| 2757 | peasycap->field_read, \ |
| 2758 | videofieldamount); |
| 2759 | JOT(8, "wakeup call to wq_video, " \ |
| 2760 | "%i=field_read %i=field_fill "\ |
| 2761 | "%i=parity\n", \ |
| 2762 | peasycap->field_read, \ |
| 2763 | peasycap->field_fill, \ |
| 2764 | 0x00FF & peasycap->\ |
| 2765 | field_buffer[peasycap->\ |
| 2766 | field_read][0].kount); |
| 2767 | wake_up_interruptible(&(peasycap->\ |
| 2768 | wq_video)); |
| 2769 | do_gettimeofday(&peasycap->timeval7); |
| 2770 | } else { |
| 2771 | peasycap->video_junk++; |
| 2772 | JOT(8, "field buffer %i had %i " \ |
| 2773 | "bytes, now discarded\n", \ |
| 2774 | peasycap->field_fill, \ |
| 2775 | videofieldamount); |
| 2776 | |
| 2777 | (peasycap->field_fill)++; |
| 2778 | |
| 2779 | if (FIELD_BUFFER_MANY <= \ |
| 2780 | peasycap->field_fill) |
| 2781 | peasycap->field_fill = 0; |
| 2782 | peasycap->field_page = 0; |
| 2783 | pfield_buffer = \ |
| 2784 | &peasycap->field_buffer\ |
| 2785 | [peasycap->field_fill]\ |
| 2786 | [peasycap->field_page]; |
| 2787 | pfield_buffer->pto = \ |
| 2788 | pfield_buffer->pgo; |
| 2789 | |
| 2790 | JOT(8, "bumped to: %i=peasycap->" \ |
| 2791 | "field_fill %i=parity\n", \ |
| 2792 | peasycap->field_fill, \ |
| 2793 | 0x00FF & pfield_buffer->kount); |
| 2794 | } |
| 2795 | if (8 == more) { |
| 2796 | JOT(8, "end-of-field: received " \ |
| 2797 | "parity byte 0x%02X\n", \ |
| 2798 | (0xFF & *pu)); |
| 2799 | if (0x40 & *pu) |
| 2800 | pfield_buffer->kount = 0x0000; |
| 2801 | else |
| 2802 | pfield_buffer->kount = 0x0001; |
| 2803 | JOT(8, "end-of-field: 0x%02X=kount\n",\ |
| 2804 | 0xFF & pfield_buffer->kount); |
| 2805 | } |
| 2806 | } |
| 2807 | /*---------------------------------------------------------------------------*/ |
| 2808 | /* |
| 2809 | * COPY more BYTES FROM ISOC BUFFER TO FIELD BUFFER |
| 2810 | */ |
| 2811 | /*---------------------------------------------------------------------------*/ |
| 2812 | pu += leap; |
| 2813 | more -= leap; |
| 2814 | |
| 2815 | if (FIELD_BUFFER_MANY <= peasycap->field_fill) { |
| 2816 | SAY("ERROR: bad peasycap->field_fill\n"); |
| 2817 | return; |
| 2818 | } |
| 2819 | if (FIELD_BUFFER_SIZE/PAGE_SIZE <= \ |
| 2820 | peasycap->field_page) { |
| 2821 | SAY("ERROR: bad peasycap->field_page\n"); |
| 2822 | return; |
| 2823 | } |
| 2824 | pfield_buffer = &peasycap->field_buffer\ |
| 2825 | [peasycap->field_fill][peasycap->field_page]; |
| 2826 | while (more) { |
| 2827 | pfield_buffer = &peasycap->field_buffer\ |
| 2828 | [peasycap->field_fill]\ |
| 2829 | [peasycap->field_page]; |
| 2830 | if (PAGE_SIZE < (pfield_buffer->pto - \ |
| 2831 | pfield_buffer->pgo)) { |
| 2832 | SAY("ERROR: bad pfield_buffer->pto\n"); |
| 2833 | return; |
| 2834 | } |
| 2835 | if (PAGE_SIZE == (pfield_buffer->pto - \ |
| 2836 | pfield_buffer->pgo)) { |
| 2837 | (peasycap->field_page)++; |
| 2838 | if (FIELD_BUFFER_SIZE/PAGE_SIZE <= \ |
| 2839 | peasycap->field_page) { |
| 2840 | JOT(16, "wrapping peasycap->" \ |
| 2841 | "field_page\n"); |
| 2842 | peasycap->field_page = 0; |
| 2843 | } |
| 2844 | pfield_buffer = &peasycap->\ |
| 2845 | field_buffer\ |
| 2846 | [peasycap->field_fill]\ |
| 2847 | [peasycap->field_page]; |
| 2848 | pfield_buffer->pto = \ |
| 2849 | pfield_buffer->pgo; |
| 2850 | } |
| 2851 | |
| 2852 | much = PAGE_SIZE - (int)(pfield_buffer->pto - \ |
| 2853 | pfield_buffer->pgo); |
| 2854 | |
| 2855 | if (much > more) |
| 2856 | much = more; |
| 2857 | memcpy(pfield_buffer->pto, pu, much); |
| 2858 | pu += much; |
| 2859 | (pfield_buffer->pto) += much; |
| 2860 | more -= much; |
| 2861 | } |
| 2862 | } |
| 2863 | } |
| 2864 | } |
| 2865 | } |
| 2866 | /*---------------------------------------------------------------------------*/ |
| 2867 | /* |
| 2868 | * |
| 2869 | * |
| 2870 | * *** UNDER DEVELOPMENT/TESTING - NOT READY YET! *** |
| 2871 | * |
| 2872 | * |
| 2873 | * |
| 2874 | * VIDEOTAPES MAY HAVE BEEN MANUALLY PAUSED AND RESTARTED DURING RECORDING. |
| 2875 | * THIS CAUSES LOSS OF SYNC, CONFUSING DOWNSTREAM USERSPACE PROGRAMS WHICH |
| 2876 | * MAY INTERPRET THE INTERRUPTION AS A SYMPTOM OF LATENCY. TO OVERCOME THIS |
| 2877 | * THE DRIVER BRIDGES THE HIATUS BY SENDING DUMMY VIDEO FRAMES AT ROUGHLY |
| 2878 | * THE RIGHT TIME INTERVALS IN THE HOPE OF PERSUADING THE DOWNSTREAM USERSPACE |
| 2879 | * PROGRAM TO RESUME NORMAL SERVICE WHEN THE INTERRUPTION IS OVER. |
| 2880 | */ |
| 2881 | /*---------------------------------------------------------------------------*/ |
| 2882 | #if defined(BRIDGER) |
| 2883 | do_gettimeofday(&timeval); |
| 2884 | if (peasycap->timeval7.tv_sec) { |
| 2885 | usec = 1000000*(timeval.tv_sec - peasycap->timeval7.tv_sec) + \ |
| 2886 | (timeval.tv_usec - peasycap->timeval7.tv_usec); |
| 2887 | if (usec > (peasycap->usec + peasycap->tolerate)) { |
| 2888 | JOT(8, "bridging hiatus\n"); |
| 2889 | peasycap->video_junk = 0; |
| 2890 | peasycap->field_buffer[peasycap->field_fill][0].kount |= 0x0400; |
| 2891 | |
| 2892 | peasycap->field_read = (peasycap->field_fill)++; |
| 2893 | |
| 2894 | if (FIELD_BUFFER_MANY <= peasycap->field_fill) \ |
| 2895 | peasycap->field_fill = 0; |
| 2896 | peasycap->field_page = 0; |
| 2897 | pfield_buffer = &peasycap->field_buffer\ |
| 2898 | [peasycap->field_fill][peasycap->field_page]; |
| 2899 | pfield_buffer->pto = pfield_buffer->pgo; |
| 2900 | |
| 2901 | JOT(8, "bumped to: %i=peasycap->field_fill %i=parity\n", \ |
| 2902 | peasycap->field_fill, 0x00FF & pfield_buffer->kount); |
| 2903 | JOT(8, "field buffer %i has %i bytes to be overwritten\n", \ |
| 2904 | peasycap->field_read, videofieldamount); |
| 2905 | JOT(8, "wakeup call to wq_video, " \ |
| 2906 | "%i=field_read %i=field_fill %i=parity\n", \ |
| 2907 | peasycap->field_read, peasycap->field_fill, \ |
| 2908 | 0x00FF & \ |
| 2909 | peasycap->field_buffer[peasycap->field_read][0].kount); |
| 2910 | wake_up_interruptible(&(peasycap->wq_video)); |
| 2911 | do_gettimeofday(&peasycap->timeval7); |
| 2912 | } |
| 2913 | } |
| 2914 | #endif /*BRIDGER*/ |
| 2915 | /*---------------------------------------------------------------------------*/ |
| 2916 | /* |
| 2917 | * RESUBMIT THIS URB, UNLESS A SEVERE PERSISTENT ERROR CONDITION EXISTS. |
| 2918 | * |
| 2919 | * IF THE WAIT QUEUES ARE NOT CLEARED IN RESPONSE TO AN ERROR CONDITION |
| 2920 | * THE USERSPACE PROGRAM, E.G. mplayer, MAY HANG ON EXIT. BEWARE. |
| 2921 | */ |
| 2922 | /*---------------------------------------------------------------------------*/ |
| 2923 | if (VIDEO_ISOC_BUFFER_MANY <= peasycap->video_junk) { |
| 2924 | SAY("easycap driver shutting down on condition green\n"); |
| 2925 | peasycap->video_eof = 1; |
| 2926 | peasycap->audio_eof = 1; |
| 2927 | peasycap->video_junk = -VIDEO_ISOC_BUFFER_MANY; |
| 2928 | wake_up_interruptible(&(peasycap->wq_video)); |
| 2929 | wake_up_interruptible(&(peasycap->wq_audio)); |
| 2930 | return; |
| 2931 | } |
| 2932 | if (peasycap->video_isoc_streaming) { |
| 2933 | rc = usb_submit_urb(purb, GFP_ATOMIC); |
| 2934 | if (0 != rc) { |
| 2935 | SAY("ERROR: while %i=video_idle, usb_submit_urb() failed " \ |
| 2936 | "with rc:\n", peasycap->video_idle); |
| 2937 | switch (rc) { |
| 2938 | case -ENOMEM: { |
| 2939 | SAY("ENOMEM\n"); break; |
| 2940 | } |
| 2941 | case -ENODEV: { |
| 2942 | SAY("ENODEV\n"); break; |
| 2943 | } |
| 2944 | case -ENXIO: { |
| 2945 | SAY("ENXIO\n"); break; |
| 2946 | } |
| 2947 | case -EINVAL: { |
| 2948 | SAY("EINVAL\n"); break; |
| 2949 | } |
| 2950 | case -EAGAIN: { |
| 2951 | SAY("EAGAIN\n"); break; |
| 2952 | } |
| 2953 | case -EFBIG: { |
| 2954 | SAY("EFBIG\n"); break; |
| 2955 | } |
| 2956 | case -EPIPE: { |
| 2957 | SAY("EPIPE\n"); break; |
| 2958 | } |
| 2959 | case -EMSGSIZE: { |
| 2960 | SAY("EMSGSIZE\n"); break; |
| 2961 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 2962 | case -ENOSPC: { |
| 2963 | SAY("ENOSPC\n"); break; |
| 2964 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 2965 | default: { |
| 2966 | SAY("0x%08X\n", rc); break; |
| 2967 | } |
| 2968 | } |
| 2969 | } |
| 2970 | } |
| 2971 | return; |
| 2972 | } |
| 2973 | /*****************************************************************************/ |
| 2974 | /*---------------------------------------------------------------------------*/ |
| 2975 | /* |
| 2976 | * |
| 2977 | * FIXME |
| 2978 | * |
| 2979 | * |
| 2980 | * THIS FUNCTION ASSUMES THAT, ON EACH AND EVERY OCCASION THAT THE DEVICE IS |
| 2981 | * PHYSICALLY PLUGGED IN, INTERFACE 0 IS PROBED FIRST. |
| 2982 | * IF THIS IS NOT TRUE, THERE IS THE POSSIBILITY OF AN Oops. |
| 2983 | * |
| 2984 | * THIS HAS NEVER BEEN A PROBLEM IN PRACTICE, BUT SOMETHING SEEMS WRONG HERE. |
| 2985 | */ |
| 2986 | /*---------------------------------------------------------------------------*/ |
| 2987 | int |
| 2988 | easycap_usb_probe(struct usb_interface *pusb_interface, \ |
| 2989 | const struct usb_device_id *id) |
| 2990 | { |
| 2991 | struct usb_device *pusb_device, *pusb_device1; |
| 2992 | struct usb_host_interface *pusb_host_interface; |
| 2993 | struct usb_endpoint_descriptor *pepd; |
| 2994 | struct usb_interface_descriptor *pusb_interface_descriptor; |
| 2995 | struct usb_interface_assoc_descriptor *pusb_interface_assoc_descriptor; |
| 2996 | struct urb *purb; |
| 2997 | static struct easycap *peasycap /*=NULL*/; |
| 2998 | struct data_urb *pdata_urb; |
| 2999 | size_t wMaxPacketSize; |
| 3000 | int ISOCwMaxPacketSize; |
| 3001 | int BULKwMaxPacketSize; |
| 3002 | int INTwMaxPacketSize; |
| 3003 | int CTRLwMaxPacketSize; |
| 3004 | __u8 bEndpointAddress; |
| 3005 | __u8 ISOCbEndpointAddress; |
| 3006 | __u8 INTbEndpointAddress; |
| 3007 | int isin, i, j, k, m; |
| 3008 | __u8 bInterfaceNumber; |
| 3009 | __u8 bInterfaceClass; |
| 3010 | __u8 bInterfaceSubClass; |
| 3011 | void *pbuf; |
| 3012 | int okalt[8], isokalt; |
| 3013 | int okepn[8], isokepn; |
| 3014 | int okmps[8], isokmps; |
| 3015 | int maxpacketsize; |
| 3016 | int rc; |
| 3017 | |
| 3018 | JOT(4, "\n"); |
| 3019 | |
| 3020 | if ((struct usb_interface *)NULL == pusb_interface) { |
| 3021 | SAY("ERROR: pusb_interface is NULL\n"); |
| 3022 | return -EFAULT; |
| 3023 | } |
| 3024 | /*---------------------------------------------------------------------------*/ |
| 3025 | /* |
| 3026 | * GET POINTER TO STRUCTURE usb_device |
| 3027 | */ |
| 3028 | /*---------------------------------------------------------------------------*/ |
| 3029 | pusb_device1 = container_of(pusb_interface->dev.parent, \ |
| 3030 | struct usb_device, dev); |
| 3031 | if ((struct usb_device *)NULL == pusb_device1) { |
| 3032 | SAY("ERROR: pusb_device1 is NULL\n"); |
| 3033 | return -EFAULT; |
| 3034 | } |
| 3035 | pusb_device = usb_get_dev(pusb_device1); |
| 3036 | if ((struct usb_device *)NULL == pusb_device) { |
| 3037 | SAY("ERROR: pusb_device is NULL\n"); |
| 3038 | return -EFAULT; |
| 3039 | } |
| 3040 | if ((unsigned long int)pusb_device1 != (unsigned long int)pusb_device) { |
| 3041 | JOT(4, "ERROR: pusb_device1 != pusb_device\n"); |
| 3042 | return -EFAULT; |
| 3043 | } |
| 3044 | |
| 3045 | JOT(4, "bNumConfigurations=%i\n", pusb_device->descriptor.bNumConfigurations); |
| 3046 | |
| 3047 | /*---------------------------------------------------------------------------*/ |
| 3048 | pusb_host_interface = pusb_interface->cur_altsetting; |
| 3049 | if (NULL == pusb_host_interface) { |
| 3050 | SAY("ERROR: pusb_host_interface is NULL\n"); |
| 3051 | return -EFAULT; |
| 3052 | } |
| 3053 | pusb_interface_descriptor = &(pusb_host_interface->desc); |
| 3054 | if (NULL == pusb_interface_descriptor) { |
| 3055 | SAY("ERROR: pusb_interface_descriptor is NULL\n"); |
| 3056 | return -EFAULT; |
| 3057 | } |
| 3058 | /*---------------------------------------------------------------------------*/ |
| 3059 | /* |
| 3060 | * GET PROPERTIES OF PROBED INTERFACE |
| 3061 | */ |
| 3062 | /*---------------------------------------------------------------------------*/ |
| 3063 | bInterfaceNumber = pusb_interface_descriptor->bInterfaceNumber; |
| 3064 | bInterfaceClass = pusb_interface_descriptor->bInterfaceClass; |
| 3065 | bInterfaceSubClass = pusb_interface_descriptor->bInterfaceSubClass; |
| 3066 | |
| 3067 | JOT(4, "intf[%i]: pusb_interface->num_altsetting=%i\n", \ |
| 3068 | bInterfaceNumber, pusb_interface->num_altsetting); |
| 3069 | JOT(4, "intf[%i]: pusb_interface->cur_altsetting - " \ |
| 3070 | "pusb_interface->altsetting=%li\n", bInterfaceNumber, \ |
| 3071 | (long int)(pusb_interface->cur_altsetting - \ |
| 3072 | pusb_interface->altsetting)); |
| 3073 | switch (bInterfaceClass) { |
| 3074 | case USB_CLASS_AUDIO: { |
| 3075 | JOT(4, "intf[%i]: bInterfaceClass=0x%02X=USB_CLASS_AUDIO\n", \ |
| 3076 | bInterfaceNumber, bInterfaceClass); break; |
| 3077 | } |
| 3078 | case USB_CLASS_VIDEO: { |
| 3079 | JOT(4, "intf[%i]: bInterfaceClass=0x%02X=USB_CLASS_VIDEO\n", \ |
| 3080 | bInterfaceNumber, bInterfaceClass); break; |
| 3081 | } |
| 3082 | case USB_CLASS_VENDOR_SPEC: { |
| 3083 | JOT(4, "intf[%i]: bInterfaceClass=0x%02X=USB_CLASS_VENDOR_SPEC\n", \ |
| 3084 | bInterfaceNumber, bInterfaceClass); break; |
| 3085 | } |
| 3086 | default: |
| 3087 | break; |
| 3088 | } |
| 3089 | switch (bInterfaceSubClass) { |
| 3090 | case 0x01: { |
| 3091 | JOT(4, "intf[%i]: bInterfaceSubClass=0x%02X=AUDIOCONTROL\n", \ |
| 3092 | bInterfaceNumber, bInterfaceSubClass); break; |
| 3093 | } |
| 3094 | case 0x02: { |
| 3095 | JOT(4, "intf[%i]: bInterfaceSubClass=0x%02X=AUDIOSTREAMING\n", \ |
| 3096 | bInterfaceNumber, bInterfaceSubClass); break; |
| 3097 | } |
| 3098 | case 0x03: { |
| 3099 | JOT(4, "intf[%i]: bInterfaceSubClass=0x%02X=MIDISTREAMING\n", \ |
| 3100 | bInterfaceNumber, bInterfaceSubClass); break; |
| 3101 | } |
| 3102 | default: |
| 3103 | break; |
| 3104 | } |
| 3105 | /*---------------------------------------------------------------------------*/ |
| 3106 | pusb_interface_assoc_descriptor = pusb_interface->intf_assoc; |
| 3107 | if (NULL != pusb_interface_assoc_descriptor) { |
| 3108 | JOT(4, "intf[%i]: bFirstInterface=0x%02X bInterfaceCount=0x%02X\n", \ |
| 3109 | bInterfaceNumber, \ |
| 3110 | pusb_interface_assoc_descriptor->bFirstInterface, \ |
| 3111 | pusb_interface_assoc_descriptor->bInterfaceCount); |
| 3112 | } else { |
| 3113 | JOT(4, "intf[%i]: pusb_interface_assoc_descriptor is NULL\n", \ |
| 3114 | bInterfaceNumber); |
| 3115 | } |
| 3116 | /*---------------------------------------------------------------------------*/ |
| 3117 | /* |
| 3118 | * A NEW struct easycap IS ALWAYS ALLOCATED WHEN INTERFACE 0 IS PROBED. |
| 3119 | * IT IS NOT POSSIBLE HERE TO FREE ANY EXISTING struct easycap. THIS |
| 3120 | * SHOULD HAVE BEEN DONE BY easycap_delete() WHEN THE DEVICE WAS PHYSICALLY |
| 3121 | * UNPLUGGED. |
| 3122 | */ |
| 3123 | /*---------------------------------------------------------------------------*/ |
| 3124 | if (0 == bInterfaceNumber) { |
| 3125 | peasycap = kzalloc(sizeof(struct easycap), GFP_KERNEL); |
| 3126 | if (NULL == peasycap) { |
| 3127 | SAY("ERROR: Could not allocate peasycap\n"); |
| 3128 | return -ENOMEM; |
| 3129 | } else { |
| 3130 | peasycap->allocation_video_struct = sizeof(struct easycap); |
| 3131 | peasycap->allocation_video_page = 0; |
| 3132 | peasycap->allocation_video_urb = 0; |
| 3133 | peasycap->allocation_audio_struct = 0; |
| 3134 | peasycap->allocation_audio_page = 0; |
| 3135 | peasycap->allocation_audio_urb = 0; |
| 3136 | } |
| 3137 | /*---------------------------------------------------------------------------*/ |
| 3138 | /* |
| 3139 | * INITIALIZE THE NEW easycap STRUCTURE. |
| 3140 | * NO PARAMETERS ARE SPECIFIED HERE REQUIRING THE SETTING OF REGISTERS. |
| 3141 | * THAT IS DONE FIRST BY easycap_open() AND LATER BY easycap_ioctl(). |
| 3142 | */ |
| 3143 | /*---------------------------------------------------------------------------*/ |
| 3144 | peasycap->pusb_device = pusb_device; |
| 3145 | peasycap->pusb_interface = pusb_interface; |
| 3146 | |
| 3147 | kref_init(&peasycap->kref); |
| 3148 | JOT(8, "intf[%i]: after kref_init(..._video) " \ |
| 3149 | "%i=peasycap->kref.refcount.counter\n", \ |
| 3150 | bInterfaceNumber, peasycap->kref.refcount.counter); |
| 3151 | |
| 3152 | init_waitqueue_head(&(peasycap->wq_video)); |
| 3153 | init_waitqueue_head(&(peasycap->wq_audio)); |
| 3154 | |
| 3155 | mutex_init(&(peasycap->mutex_timeval0)); |
| 3156 | mutex_init(&(peasycap->mutex_timeval1)); |
| 3157 | |
| 3158 | for (k = 0; k < FRAME_BUFFER_MANY; k++) |
| 3159 | mutex_init(&(peasycap->mutex_mmap_video[k])); |
| 3160 | |
| 3161 | peasycap->ilk = 0; |
| 3162 | peasycap->microphone = false; |
| 3163 | |
| 3164 | peasycap->video_interface = -1; |
| 3165 | peasycap->video_altsetting_on = -1; |
| 3166 | peasycap->video_altsetting_off = -1; |
| 3167 | peasycap->video_endpointnumber = -1; |
| 3168 | peasycap->video_isoc_maxframesize = -1; |
| 3169 | peasycap->video_isoc_buffer_size = -1; |
| 3170 | |
| 3171 | peasycap->audio_interface = -1; |
| 3172 | peasycap->audio_altsetting_on = -1; |
| 3173 | peasycap->audio_altsetting_off = -1; |
| 3174 | peasycap->audio_endpointnumber = -1; |
| 3175 | peasycap->audio_isoc_maxframesize = -1; |
| 3176 | peasycap->audio_isoc_buffer_size = -1; |
| 3177 | |
| 3178 | peasycap->frame_buffer_many = FRAME_BUFFER_MANY; |
| 3179 | |
| 3180 | if ((struct mutex *)NULL == &(peasycap->mutex_mmap_video[0])) { |
| 3181 | SAY("ERROR: &(peasycap->mutex_mmap_video[%i]) is NULL\n", 0); |
| 3182 | return -EFAULT; |
| 3183 | } |
| 3184 | /*---------------------------------------------------------------------------*/ |
| 3185 | /* |
| 3186 | * DYNAMICALLY FILL IN THE AVAILABLE FORMATS. |
| 3187 | */ |
| 3188 | /*---------------------------------------------------------------------------*/ |
| 3189 | rc = fillin_formats(); |
| 3190 | if (0 > rc) { |
| 3191 | SAY("ERROR: fillin_formats() returned %i\n", rc); |
| 3192 | return -EFAULT; |
| 3193 | } |
| 3194 | JOT(4, "%i formats available\n", rc); |
| 3195 | } else { |
| 3196 | /*---------------------------------------------------------------------------*/ |
| 3197 | if ((struct easycap *)NULL == peasycap) { |
| 3198 | SAY("ERROR: peasycap is NULL " \ |
| 3199 | "when probing interface %i\n", \ |
| 3200 | bInterfaceNumber); |
| 3201 | return -EFAULT; |
| 3202 | } |
| 3203 | |
| 3204 | JOT(8, "kref_get() with %i=peasycap->kref.refcount.counter\n", \ |
| 3205 | (int)peasycap->kref.refcount.counter); |
| 3206 | kref_get(&peasycap->kref); |
| 3207 | } |
| 3208 | /*---------------------------------------------------------------------------*/ |
| 3209 | if ((USB_CLASS_VIDEO == bInterfaceClass) || \ |
| 3210 | (USB_CLASS_VENDOR_SPEC == bInterfaceClass)) { |
| 3211 | if (-1 == peasycap->video_interface) { |
| 3212 | peasycap->video_interface = bInterfaceNumber; |
| 3213 | JOT(4, "setting peasycap->video_interface=%i\n", \ |
| 3214 | peasycap->video_interface); |
| 3215 | } else { |
| 3216 | if (peasycap->video_interface != bInterfaceNumber) { |
| 3217 | SAY("ERROR: attempting to reset " \ |
| 3218 | "peasycap->video_interface\n"); |
| 3219 | SAY("...... continuing with " \ |
| 3220 | "%i=peasycap->video_interface\n", \ |
| 3221 | peasycap->video_interface); |
| 3222 | } |
| 3223 | } |
| 3224 | } else if ((USB_CLASS_AUDIO == bInterfaceClass) && \ |
| 3225 | (0x02 == bInterfaceSubClass)) { |
| 3226 | if (-1 == peasycap->audio_interface) { |
| 3227 | peasycap->audio_interface = bInterfaceNumber; |
| 3228 | JOT(4, "setting peasycap->audio_interface=%i\n", \ |
| 3229 | peasycap->audio_interface); |
| 3230 | } else { |
| 3231 | if (peasycap->audio_interface != bInterfaceNumber) { |
| 3232 | SAY("ERROR: attempting to reset " \ |
| 3233 | "peasycap->audio_interface\n"); |
| 3234 | SAY("...... continuing with " \ |
| 3235 | "%i=peasycap->audio_interface\n", \ |
| 3236 | peasycap->audio_interface); |
| 3237 | } |
| 3238 | } |
| 3239 | } |
| 3240 | /*---------------------------------------------------------------------------*/ |
| 3241 | /* |
| 3242 | * INVESTIGATE ALL ALTSETTINGS. |
| 3243 | * DONE IN DETAIL BECAUSE USB DEVICE 05e1:0408 HAS DISPARATE INCARNATIONS. |
| 3244 | */ |
| 3245 | /*---------------------------------------------------------------------------*/ |
| 3246 | isokalt = 0; |
| 3247 | isokepn = 0; |
| 3248 | isokmps = 0; |
| 3249 | |
| 3250 | for (i = 0; i < pusb_interface->num_altsetting; i++) { |
| 3251 | pusb_host_interface = &(pusb_interface->altsetting[i]); |
| 3252 | if ((struct usb_host_interface *)NULL == pusb_host_interface) { |
| 3253 | SAY("ERROR: pusb_host_interface is NULL\n"); |
| 3254 | return -EFAULT; |
| 3255 | } |
| 3256 | pusb_interface_descriptor = &(pusb_host_interface->desc); |
| 3257 | if ((struct usb_interface_descriptor *)NULL == \ |
| 3258 | pusb_interface_descriptor) { |
| 3259 | SAY("ERROR: pusb_interface_descriptor is NULL\n"); |
| 3260 | return -EFAULT; |
| 3261 | } |
| 3262 | |
| 3263 | JOT(4, "intf[%i]alt[%i]: desc.bDescriptorType=0x%02X\n", \ |
| 3264 | bInterfaceNumber, i, pusb_interface_descriptor->bDescriptorType); |
| 3265 | JOT(4, "intf[%i]alt[%i]: desc.bInterfaceNumber=0x%02X\n", \ |
| 3266 | bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceNumber); |
| 3267 | JOT(4, "intf[%i]alt[%i]: desc.bAlternateSetting=0x%02X\n", \ |
| 3268 | bInterfaceNumber, i, pusb_interface_descriptor->bAlternateSetting); |
| 3269 | JOT(4, "intf[%i]alt[%i]: desc.bNumEndpoints=0x%02X\n", \ |
| 3270 | bInterfaceNumber, i, pusb_interface_descriptor->bNumEndpoints); |
| 3271 | JOT(4, "intf[%i]alt[%i]: desc.bInterfaceClass=0x%02X\n", \ |
| 3272 | bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceClass); |
| 3273 | JOT(4, "intf[%i]alt[%i]: desc.bInterfaceSubClass=0x%02X\n", \ |
| 3274 | bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceSubClass); |
| 3275 | JOT(4, "intf[%i]alt[%i]: desc.bInterfaceProtocol=0x%02X\n", \ |
| 3276 | bInterfaceNumber, i, pusb_interface_descriptor->bInterfaceProtocol); |
| 3277 | JOT(4, "intf[%i]alt[%i]: desc.iInterface=0x%02X\n", \ |
| 3278 | bInterfaceNumber, i, pusb_interface_descriptor->iInterface); |
| 3279 | |
| 3280 | ISOCwMaxPacketSize = -1; |
| 3281 | BULKwMaxPacketSize = -1; |
| 3282 | INTwMaxPacketSize = -1; |
| 3283 | CTRLwMaxPacketSize = -1; |
| 3284 | ISOCbEndpointAddress = 0; |
| 3285 | INTbEndpointAddress = 0; |
| 3286 | |
| 3287 | if (0 == pusb_interface_descriptor->bNumEndpoints) |
| 3288 | JOT(4, "intf[%i]alt[%i] has no endpoints\n", \ |
| 3289 | bInterfaceNumber, i); |
| 3290 | /*---------------------------------------------------------------------------*/ |
| 3291 | for (j = 0; j < pusb_interface_descriptor->bNumEndpoints; j++) { |
| 3292 | pepd = &(pusb_host_interface->endpoint[j].desc); |
| 3293 | if ((struct usb_endpoint_descriptor *)NULL == pepd) { |
| 3294 | SAY("ERROR: pepd is NULL.\n"); |
| 3295 | SAY("...... skipping\n"); |
| 3296 | continue; |
| 3297 | } |
| 3298 | wMaxPacketSize = le16_to_cpu(pepd->wMaxPacketSize); |
| 3299 | bEndpointAddress = pepd->bEndpointAddress; |
| 3300 | |
| 3301 | JOT(4, "intf[%i]alt[%i]end[%i]: bEndpointAddress=0x%X\n", \ |
| 3302 | bInterfaceNumber, i, j, \ |
| 3303 | pepd->bEndpointAddress); |
| 3304 | JOT(4, "intf[%i]alt[%i]end[%i]: bmAttributes=0x%X\n", \ |
| 3305 | bInterfaceNumber, i, j, \ |
| 3306 | pepd->bmAttributes); |
| 3307 | JOT(4, "intf[%i]alt[%i]end[%i]: wMaxPacketSize=%i\n", \ |
| 3308 | bInterfaceNumber, i, j, \ |
| 3309 | pepd->wMaxPacketSize); |
| 3310 | JOT(4, "intf[%i]alt[%i]end[%i]: bInterval=%i\n", |
| 3311 | bInterfaceNumber, i, j, \ |
| 3312 | pepd->bInterval); |
| 3313 | |
| 3314 | if (pepd->bEndpointAddress & USB_DIR_IN) { |
| 3315 | JOT(4, "intf[%i]alt[%i]end[%i] is an IN endpoint\n",\ |
| 3316 | bInterfaceNumber, i, j); |
| 3317 | isin = 1; |
| 3318 | } else { |
| 3319 | JOT(4, "intf[%i]alt[%i]end[%i] is an OUT endpoint\n",\ |
| 3320 | bInterfaceNumber, i, j); |
| 3321 | SAY("ERROR: OUT endpoint unexpected\n"); |
| 3322 | SAY("...... continuing\n"); |
| 3323 | isin = 0; |
| 3324 | } |
| 3325 | if ((pepd->bmAttributes & \ |
| 3326 | USB_ENDPOINT_XFERTYPE_MASK) == \ |
| 3327 | USB_ENDPOINT_XFER_ISOC) { |
| 3328 | JOT(4, "intf[%i]alt[%i]end[%i] is an ISOC endpoint\n",\ |
| 3329 | bInterfaceNumber, i, j); |
| 3330 | if (isin) { |
| 3331 | switch (bInterfaceClass) { |
| 3332 | case USB_CLASS_VIDEO: |
| 3333 | case USB_CLASS_VENDOR_SPEC: { |
| 3334 | if (!peasycap) { |
| 3335 | SAY("MISTAKE: " \ |
| 3336 | "peasycap is NULL\n"); |
| 3337 | return -EFAULT; |
| 3338 | } |
| 3339 | if (pepd->wMaxPacketSize) { |
| 3340 | if (8 > isokalt) { |
| 3341 | okalt[isokalt] = i; |
| 3342 | JOT(4,\ |
| 3343 | "%i=okalt[%i]\n", \ |
| 3344 | okalt[isokalt], \ |
| 3345 | isokalt); |
| 3346 | isokalt++; |
| 3347 | } |
| 3348 | if (8 > isokepn) { |
| 3349 | okepn[isokepn] = \ |
| 3350 | pepd->\ |
| 3351 | bEndpointAddress & \ |
| 3352 | 0x0F; |
| 3353 | JOT(4,\ |
| 3354 | "%i=okepn[%i]\n", \ |
| 3355 | okepn[isokepn], \ |
| 3356 | isokepn); |
| 3357 | isokepn++; |
| 3358 | } |
| 3359 | if (8 > isokmps) { |
| 3360 | okmps[isokmps] = \ |
| 3361 | le16_to_cpu(pepd->\ |
| 3362 | wMaxPacketSize); |
| 3363 | JOT(4,\ |
| 3364 | "%i=okmps[%i]\n", \ |
| 3365 | okmps[isokmps], \ |
| 3366 | isokmps); |
| 3367 | isokmps++; |
| 3368 | } |
| 3369 | } else { |
| 3370 | if (-1 == peasycap->\ |
| 3371 | video_altsetting_off) { |
| 3372 | peasycap->\ |
| 3373 | video_altsetting_off =\ |
| 3374 | i; |
| 3375 | JOT(4, "%i=video_" \ |
| 3376 | "altsetting_off " \ |
| 3377 | "<====\n", \ |
| 3378 | peasycap->\ |
| 3379 | video_altsetting_off); |
| 3380 | } else { |
| 3381 | SAY("ERROR: peasycap" \ |
| 3382 | "->video_altsetting_" \ |
| 3383 | "off already set\n"); |
| 3384 | SAY("...... " \ |
| 3385 | "continuing with " \ |
| 3386 | "%i=peasycap->video_" \ |
| 3387 | "altsetting_off\n", \ |
| 3388 | peasycap->\ |
| 3389 | video_altsetting_off); |
| 3390 | } |
| 3391 | } |
| 3392 | break; |
| 3393 | } |
| 3394 | case USB_CLASS_AUDIO: { |
| 3395 | if (0x02 != bInterfaceSubClass) |
| 3396 | break; |
| 3397 | if (!peasycap) { |
| 3398 | SAY("MISTAKE: " \ |
| 3399 | "peasycap is NULL\n"); |
| 3400 | return -EFAULT; |
| 3401 | } |
| 3402 | if (pepd->wMaxPacketSize) { |
| 3403 | if (8 > isokalt) { |
| 3404 | okalt[isokalt] = i ; |
| 3405 | JOT(4,\ |
| 3406 | "%i=okalt[%i]\n", \ |
| 3407 | okalt[isokalt], \ |
| 3408 | isokalt); |
| 3409 | isokalt++; |
| 3410 | } |
| 3411 | if (8 > isokepn) { |
| 3412 | okepn[isokepn] = \ |
| 3413 | pepd->\ |
| 3414 | bEndpointAddress & \ |
| 3415 | 0x0F; |
| 3416 | JOT(4,\ |
| 3417 | "%i=okepn[%i]\n", \ |
| 3418 | okepn[isokepn], \ |
| 3419 | isokepn); |
| 3420 | isokepn++; |
| 3421 | } |
| 3422 | if (8 > isokmps) { |
| 3423 | okmps[isokmps] = \ |
| 3424 | le16_to_cpu(pepd->\ |
| 3425 | wMaxPacketSize); |
| 3426 | JOT(4,\ |
| 3427 | "%i=okmps[%i]\n",\ |
| 3428 | okmps[isokmps], \ |
| 3429 | isokmps); |
| 3430 | isokmps++; |
| 3431 | } |
| 3432 | } else { |
| 3433 | if (-1 == peasycap->\ |
| 3434 | audio_altsetting_off) { |
| 3435 | peasycap->\ |
| 3436 | audio_altsetting_off =\ |
| 3437 | i; |
| 3438 | JOT(4, "%i=audio_" \ |
| 3439 | "altsetting_off " \ |
| 3440 | "<====\n", \ |
| 3441 | peasycap->\ |
| 3442 | audio_altsetting_off); |
| 3443 | } else { |
| 3444 | SAY("ERROR: peasycap" \ |
| 3445 | "->audio_altsetting_" \ |
| 3446 | "off already set\n"); |
| 3447 | SAY("...... " \ |
| 3448 | "continuing with " \ |
| 3449 | "%i=peasycap->\ |
| 3450 | audio_altsetting_" \ |
| 3451 | "off\n", |
| 3452 | peasycap->\ |
| 3453 | audio_altsetting_off); |
| 3454 | } |
| 3455 | } |
| 3456 | break; |
| 3457 | } |
| 3458 | default: |
| 3459 | break; |
| 3460 | } |
| 3461 | } |
| 3462 | } else if ((pepd->bmAttributes & \ |
| 3463 | USB_ENDPOINT_XFERTYPE_MASK) ==\ |
| 3464 | USB_ENDPOINT_XFER_BULK) { |
| 3465 | JOT(4, "intf[%i]alt[%i]end[%i] is a BULK endpoint\n",\ |
| 3466 | bInterfaceNumber, i, j); |
| 3467 | } else if ((pepd->bmAttributes & \ |
| 3468 | USB_ENDPOINT_XFERTYPE_MASK) ==\ |
| 3469 | USB_ENDPOINT_XFER_INT) { |
| 3470 | JOT(4, "intf[%i]alt[%i]end[%i] is an INT endpoint\n",\ |
| 3471 | bInterfaceNumber, i, j); |
| 3472 | } else { |
| 3473 | JOT(4, "intf[%i]alt[%i]end[%i] is a CTRL endpoint\n",\ |
| 3474 | bInterfaceNumber, i, j); |
| 3475 | } |
| 3476 | if (0 == pepd->wMaxPacketSize) { |
| 3477 | JOT(4, "intf[%i]alt[%i]end[%i] " \ |
| 3478 | "has zero packet size\n", \ |
| 3479 | bInterfaceNumber, i, j); |
| 3480 | } |
| 3481 | } |
| 3482 | } |
| 3483 | /*---------------------------------------------------------------------------*/ |
| 3484 | /* |
| 3485 | * PERFORM INITIALIZATION OF THE PROBED INTERFACE |
| 3486 | */ |
| 3487 | /*---------------------------------------------------------------------------*/ |
| 3488 | JOT(4, "initialization begins for interface %i\n", \ |
| 3489 | pusb_interface_descriptor->bInterfaceNumber); |
| 3490 | switch (bInterfaceNumber) { |
| 3491 | /*---------------------------------------------------------------------------*/ |
| 3492 | /* |
| 3493 | * INTERFACE 0 IS THE VIDEO INTERFACE |
| 3494 | */ |
| 3495 | /*---------------------------------------------------------------------------*/ |
| 3496 | case 0: { |
| 3497 | if (!peasycap) { |
| 3498 | SAY("MISTAKE: peasycap is NULL\n"); |
| 3499 | return -EFAULT; |
| 3500 | } |
| 3501 | if (!isokalt) { |
| 3502 | SAY("ERROR: no viable video_altsetting_on\n"); |
| 3503 | return -ENOENT; |
| 3504 | } else { |
| 3505 | peasycap->video_altsetting_on = okalt[isokalt - 1]; |
| 3506 | JOT(4, "%i=video_altsetting_on <====\n", \ |
| 3507 | peasycap->video_altsetting_on); |
| 3508 | } |
| 3509 | if (!isokepn) { |
| 3510 | SAY("ERROR: no viable video_endpointnumber\n"); |
| 3511 | return -ENOENT; |
| 3512 | } else { |
| 3513 | peasycap->video_endpointnumber = okepn[isokepn - 1]; |
| 3514 | JOT(4, "%i=video_endpointnumber\n", \ |
| 3515 | peasycap->video_endpointnumber); |
| 3516 | } |
| 3517 | if (!isokmps) { |
| 3518 | SAY("ERROR: no viable video_maxpacketsize\n"); |
| 3519 | return -ENOENT; |
| 3520 | /*---------------------------------------------------------------------------*/ |
| 3521 | /* |
| 3522 | * DECIDE THE VIDEO STREAMING PARAMETERS |
| 3523 | */ |
| 3524 | /*---------------------------------------------------------------------------*/ |
| 3525 | } else { |
| 3526 | maxpacketsize = okmps[isokmps - 1] - 1024; |
| 3527 | if (USB_2_0_MAXPACKETSIZE > maxpacketsize) { |
| 3528 | peasycap->video_isoc_maxframesize = maxpacketsize; |
| 3529 | } else { |
| 3530 | peasycap->video_isoc_maxframesize = \ |
| 3531 | USB_2_0_MAXPACKETSIZE; |
| 3532 | } |
| 3533 | JOT(4, "%i=video_isoc_maxframesize\n", \ |
| 3534 | peasycap->video_isoc_maxframesize); |
| 3535 | if (0 >= peasycap->video_isoc_maxframesize) { |
| 3536 | SAY("ERROR: bad video_isoc_maxframesize\n"); |
| 3537 | return -ENOENT; |
| 3538 | } |
| 3539 | peasycap->video_isoc_framesperdesc = VIDEO_ISOC_FRAMESPERDESC; |
| 3540 | JOT(4, "%i=video_isoc_framesperdesc\n", \ |
| 3541 | peasycap->video_isoc_framesperdesc); |
| 3542 | if (0 >= peasycap->video_isoc_framesperdesc) { |
| 3543 | SAY("ERROR: bad video_isoc_framesperdesc\n"); |
| 3544 | return -ENOENT; |
| 3545 | } |
| 3546 | peasycap->video_isoc_buffer_size = \ |
| 3547 | peasycap->video_isoc_maxframesize * \ |
| 3548 | peasycap->video_isoc_framesperdesc; |
| 3549 | JOT(4, "%i=video_isoc_buffer_size\n", \ |
| 3550 | peasycap->video_isoc_buffer_size); |
| 3551 | if ((PAGE_SIZE << VIDEO_ISOC_ORDER) < \ |
| 3552 | peasycap->video_isoc_buffer_size) { |
| 3553 | SAY("MISTAKE: " \ |
| 3554 | "peasycap->video_isoc_buffer_size too big\n"); |
| 3555 | return -EFAULT; |
| 3556 | } |
| 3557 | } |
| 3558 | /*---------------------------------------------------------------------------*/ |
| 3559 | if (-1 == peasycap->video_interface) { |
| 3560 | SAY("MISTAKE: video_interface is unset\n"); |
| 3561 | return -EFAULT; |
| 3562 | } |
| 3563 | if (-1 == peasycap->video_altsetting_on) { |
| 3564 | SAY("MISTAKE: video_altsetting_on is unset\n"); |
| 3565 | return -EFAULT; |
| 3566 | } |
| 3567 | if (-1 == peasycap->video_altsetting_off) { |
| 3568 | SAY("MISTAKE: video_interface_off is unset\n"); |
| 3569 | return -EFAULT; |
| 3570 | } |
| 3571 | if (-1 == peasycap->video_endpointnumber) { |
| 3572 | SAY("MISTAKE: video_endpointnumber is unset\n"); |
| 3573 | return -EFAULT; |
| 3574 | } |
| 3575 | if (-1 == peasycap->video_isoc_maxframesize) { |
| 3576 | SAY("MISTAKE: video_isoc_maxframesize is unset\n"); |
| 3577 | return -EFAULT; |
| 3578 | } |
| 3579 | if (-1 == peasycap->video_isoc_buffer_size) { |
| 3580 | SAY("MISTAKE: video_isoc_buffer_size is unset\n"); |
| 3581 | return -EFAULT; |
| 3582 | } |
| 3583 | /*---------------------------------------------------------------------------*/ |
| 3584 | /* |
| 3585 | * ALLOCATE MEMORY FOR VIDEO BUFFERS. LISTS MUST BE INITIALIZED FIRST. |
| 3586 | */ |
| 3587 | /*---------------------------------------------------------------------------*/ |
| 3588 | INIT_LIST_HEAD(&(peasycap->urb_video_head)); |
| 3589 | peasycap->purb_video_head = &(peasycap->urb_video_head); |
| 3590 | /*---------------------------------------------------------------------------*/ |
| 3591 | JOT(4, "allocating %i frame buffers of size %li\n", \ |
| 3592 | FRAME_BUFFER_MANY, (long int)FRAME_BUFFER_SIZE); |
| 3593 | JOT(4, ".... each scattered over %li pages\n", \ |
| 3594 | FRAME_BUFFER_SIZE/PAGE_SIZE); |
| 3595 | |
| 3596 | for (k = 0; k < FRAME_BUFFER_MANY; k++) { |
| 3597 | for (m = 0; m < FRAME_BUFFER_SIZE/PAGE_SIZE; m++) { |
| 3598 | if ((void *)NULL != peasycap->frame_buffer[k][m].pgo) |
| 3599 | SAY("attempting to reallocate frame " \ |
| 3600 | " buffers\n"); |
| 3601 | else { |
| 3602 | pbuf = (void *)__get_free_page(GFP_KERNEL); |
| 3603 | if ((void *)NULL == pbuf) { |
| 3604 | SAY("ERROR: Could not allocate frame "\ |
| 3605 | "buffer %i page %i\n", k, m); |
| 3606 | return -ENOMEM; |
| 3607 | } else |
| 3608 | peasycap->allocation_video_page += 1; |
| 3609 | peasycap->frame_buffer[k][m].pgo = pbuf; |
| 3610 | } |
| 3611 | peasycap->frame_buffer[k][m].pto = \ |
| 3612 | peasycap->frame_buffer[k][m].pgo; |
| 3613 | } |
| 3614 | } |
| 3615 | |
| 3616 | peasycap->frame_fill = 0; |
| 3617 | peasycap->frame_read = 0; |
| 3618 | JOT(4, "allocation of frame buffers done: %i pages\n", k * \ |
| 3619 | m); |
| 3620 | /*---------------------------------------------------------------------------*/ |
| 3621 | JOT(4, "allocating %i field buffers of size %li\n", \ |
| 3622 | FIELD_BUFFER_MANY, (long int)FIELD_BUFFER_SIZE); |
| 3623 | JOT(4, ".... each scattered over %li pages\n", \ |
| 3624 | FIELD_BUFFER_SIZE/PAGE_SIZE); |
| 3625 | |
| 3626 | for (k = 0; k < FIELD_BUFFER_MANY; k++) { |
| 3627 | for (m = 0; m < FIELD_BUFFER_SIZE/PAGE_SIZE; m++) { |
| 3628 | if ((void *)NULL != peasycap->field_buffer[k][m].pgo) { |
| 3629 | SAY("ERROR: attempting to reallocate " \ |
| 3630 | "field buffers\n"); |
| 3631 | } else { |
| 3632 | pbuf = (void *) __get_free_page(GFP_KERNEL); |
| 3633 | if ((void *)NULL == pbuf) { |
| 3634 | SAY("ERROR: Could not allocate field" \ |
| 3635 | " buffer %i page %i\n", k, m); |
| 3636 | return -ENOMEM; |
| 3637 | } |
| 3638 | else |
| 3639 | peasycap->allocation_video_page += 1; |
| 3640 | peasycap->field_buffer[k][m].pgo = pbuf; |
| 3641 | } |
| 3642 | peasycap->field_buffer[k][m].pto = \ |
| 3643 | peasycap->field_buffer[k][m].pgo; |
| 3644 | } |
| 3645 | peasycap->field_buffer[k][0].kount = 0x0200; |
| 3646 | } |
| 3647 | peasycap->field_fill = 0; |
| 3648 | peasycap->field_page = 0; |
| 3649 | peasycap->field_read = 0; |
| 3650 | JOT(4, "allocation of field buffers done: %i pages\n", k * \ |
| 3651 | m); |
| 3652 | /*---------------------------------------------------------------------------*/ |
| 3653 | JOT(4, "allocating %i isoc video buffers of size %i\n", \ |
| 3654 | VIDEO_ISOC_BUFFER_MANY, \ |
| 3655 | peasycap->video_isoc_buffer_size); |
| 3656 | JOT(4, ".... each occupying contiguous memory pages\n"); |
| 3657 | |
| 3658 | for (k = 0; k < VIDEO_ISOC_BUFFER_MANY; k++) { |
| 3659 | pbuf = (void *)__get_free_pages(GFP_KERNEL, VIDEO_ISOC_ORDER); |
| 3660 | if (NULL == pbuf) { |
| 3661 | SAY("ERROR: Could not allocate isoc video buffer " \ |
| 3662 | "%i\n", k); |
| 3663 | return -ENOMEM; |
| 3664 | } else |
| 3665 | peasycap->allocation_video_page += \ |
| 3666 | ((unsigned int)(0x01 << VIDEO_ISOC_ORDER)); |
| 3667 | |
| 3668 | peasycap->video_isoc_buffer[k].pgo = pbuf; |
| 3669 | peasycap->video_isoc_buffer[k].pto = pbuf + \ |
| 3670 | peasycap->video_isoc_buffer_size; |
| 3671 | peasycap->video_isoc_buffer[k].kount = k; |
| 3672 | } |
| 3673 | JOT(4, "allocation of isoc video buffers done: %i pages\n", \ |
| 3674 | k * (0x01 << VIDEO_ISOC_ORDER)); |
| 3675 | /*---------------------------------------------------------------------------*/ |
| 3676 | /* |
| 3677 | * ALLOCATE AND INITIALIZE MULTIPLE struct urb ... |
| 3678 | */ |
| 3679 | /*---------------------------------------------------------------------------*/ |
| 3680 | JOT(4, "allocating %i struct urb.\n", VIDEO_ISOC_BUFFER_MANY); |
| 3681 | JOT(4, "using %i=peasycap->video_isoc_framesperdesc\n", \ |
| 3682 | peasycap->video_isoc_framesperdesc); |
| 3683 | JOT(4, "using %i=peasycap->video_isoc_maxframesize\n", \ |
| 3684 | peasycap->video_isoc_maxframesize); |
| 3685 | JOT(4, "using %i=peasycap->video_isoc_buffer_sizen", \ |
| 3686 | peasycap->video_isoc_buffer_size); |
| 3687 | |
| 3688 | for (k = 0; k < VIDEO_ISOC_BUFFER_MANY; k++) { |
| 3689 | purb = usb_alloc_urb(peasycap->video_isoc_framesperdesc, \ |
| 3690 | GFP_KERNEL); |
| 3691 | if (NULL == purb) { |
| 3692 | SAY("ERROR: usb_alloc_urb returned NULL for buffer " \ |
| 3693 | "%i\n", k); |
| 3694 | return -ENOMEM; |
| 3695 | } else |
| 3696 | peasycap->allocation_video_urb += 1; |
| 3697 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 3698 | pdata_urb = kzalloc(sizeof(struct data_urb), GFP_KERNEL); |
| 3699 | if (NULL == pdata_urb) { |
| 3700 | SAY("ERROR: Could not allocate struct data_urb.\n"); |
| 3701 | return -ENOMEM; |
| 3702 | } else |
| 3703 | peasycap->allocation_video_struct += \ |
| 3704 | sizeof(struct data_urb); |
| 3705 | |
| 3706 | pdata_urb->purb = purb; |
| 3707 | pdata_urb->isbuf = k; |
| 3708 | pdata_urb->length = 0; |
| 3709 | list_add_tail(&(pdata_urb->list_head), \ |
| 3710 | peasycap->purb_video_head); |
| 3711 | /*---------------------------------------------------------------------------*/ |
| 3712 | /* |
| 3713 | * ... AND INITIALIZE THEM |
| 3714 | */ |
| 3715 | /*---------------------------------------------------------------------------*/ |
| 3716 | if (!k) { |
| 3717 | JOT(4, "initializing video urbs thus:\n"); |
| 3718 | JOT(4, " purb->interval = 1;\n"); |
| 3719 | JOT(4, " purb->dev = peasycap->pusb_device;\n"); |
| 3720 | JOT(4, " purb->pipe = usb_rcvisocpipe" \ |
| 3721 | "(peasycap->pusb_device,%i);\n", \ |
| 3722 | peasycap->video_endpointnumber); |
| 3723 | JOT(4, " purb->transfer_flags = URB_ISO_ASAP;\n"); |
| 3724 | JOT(4, " purb->transfer_buffer = peasycap->" \ |
| 3725 | "video_isoc_buffer[.].pgo;\n"); |
| 3726 | JOT(4, " purb->transfer_buffer_length = %i;\n", \ |
| 3727 | peasycap->video_isoc_buffer_size); |
| 3728 | JOT(4, " purb->complete = easycap_complete;\n"); |
| 3729 | JOT(4, " purb->context = peasycap;\n"); |
| 3730 | JOT(4, " purb->start_frame = 0;\n"); |
| 3731 | JOT(4, " purb->number_of_packets = %i;\n", \ |
| 3732 | peasycap->video_isoc_framesperdesc); |
| 3733 | JOT(4, " for (j = 0; j < %i; j++)\n", \ |
| 3734 | peasycap->video_isoc_framesperdesc); |
| 3735 | JOT(4, " {\n"); |
| 3736 | JOT(4, " purb->iso_frame_desc[j].offset = j*%i;\n",\ |
| 3737 | peasycap->video_isoc_maxframesize); |
| 3738 | JOT(4, " purb->iso_frame_desc[j].length = %i;\n", \ |
| 3739 | peasycap->video_isoc_maxframesize); |
| 3740 | JOT(4, " }\n"); |
| 3741 | } |
| 3742 | |
| 3743 | purb->interval = 1; |
| 3744 | purb->dev = peasycap->pusb_device; |
| 3745 | purb->pipe = usb_rcvisocpipe(peasycap->pusb_device, \ |
| 3746 | peasycap->video_endpointnumber); |
| 3747 | purb->transfer_flags = URB_ISO_ASAP; |
| 3748 | purb->transfer_buffer = peasycap->video_isoc_buffer[k].pgo; |
| 3749 | purb->transfer_buffer_length = \ |
| 3750 | peasycap->video_isoc_buffer_size; |
| 3751 | purb->complete = easycap_complete; |
| 3752 | purb->context = peasycap; |
| 3753 | purb->start_frame = 0; |
| 3754 | purb->number_of_packets = peasycap->video_isoc_framesperdesc; |
| 3755 | for (j = 0; j < peasycap->video_isoc_framesperdesc; j++) { |
| 3756 | purb->iso_frame_desc[j].offset = j * \ |
| 3757 | peasycap->video_isoc_maxframesize; |
| 3758 | purb->iso_frame_desc[j].length = \ |
| 3759 | peasycap->video_isoc_maxframesize; |
| 3760 | } |
| 3761 | } |
| 3762 | JOT(4, "allocation of %i struct urb done.\n", k); |
| 3763 | /*--------------------------------------------------------------------------*/ |
| 3764 | /* |
| 3765 | * SAVE POINTER peasycap IN THIS INTERFACE. |
| 3766 | */ |
| 3767 | /*--------------------------------------------------------------------------*/ |
| 3768 | usb_set_intfdata(pusb_interface, peasycap); |
| 3769 | /*--------------------------------------------------------------------------*/ |
| 3770 | /* |
| 3771 | * THE VIDEO DEVICE CAN BE REGISTERED NOW, AS IT IS READY. |
| 3772 | */ |
| 3773 | /*--------------------------------------------------------------------------*/ |
| 3774 | #if (!defined(EASYCAP_IS_VIDEODEV_CLIENT)) |
| 3775 | if (0 != (usb_register_dev(pusb_interface, &easycap_class))) { |
| 3776 | err("Not able to get a minor for this device"); |
| 3777 | usb_set_intfdata(pusb_interface, NULL); |
| 3778 | return -ENODEV; |
| 3779 | } else |
| 3780 | (peasycap->registered_video)++; |
| 3781 | SAY("easycap attached to minor #%d\n", pusb_interface->minor); |
| 3782 | break; |
| 3783 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 3784 | #else |
| 3785 | pvideo_device = (struct video_device *)\ |
| 3786 | kzalloc(sizeof(struct video_device), GFP_KERNEL); |
| 3787 | if ((struct video_device *)NULL == pvideo_device) { |
| 3788 | SAY("ERROR: Could not allocate structure video_device\n"); |
| 3789 | return -ENOMEM; |
| 3790 | } |
| 3791 | if (VIDEO_DEVICE_MANY <= video_device_many) { |
| 3792 | SAY("ERROR: Too many /dev/videos\n"); |
| 3793 | return -ENOMEM; |
| 3794 | } |
| 3795 | pvideo_array[video_device_many] = pvideo_device; video_device_many++; |
| 3796 | |
| 3797 | strcpy(&pvideo_device->name[0], "easycapdc60"); |
| 3798 | #if defined(EASYCAP_NEEDS_V4L2_FOPS) |
| 3799 | pvideo_device->fops = &v4l2_fops; |
| 3800 | #else |
| 3801 | pvideo_device->fops = &easycap_fops; |
| 3802 | #endif /*EASYCAP_NEEDS_V4L2_FOPS*/ |
| 3803 | pvideo_device->minor = -1; |
| 3804 | pvideo_device->release = (void *)(&videodev_release); |
| 3805 | |
| 3806 | video_set_drvdata(pvideo_device, (void *)peasycap); |
| 3807 | |
| 3808 | rc = video_register_device(pvideo_device, VFL_TYPE_GRABBER, -1); |
| 3809 | if (0 != rc) { |
| 3810 | err("Not able to register with videodev"); |
| 3811 | videodev_release(pvideo_device); |
| 3812 | return -ENODEV; |
| 3813 | } else { |
| 3814 | peasycap->pvideo_device = pvideo_device; |
| 3815 | (peasycap->registered_video)++; |
| 3816 | JOT(4, "registered with videodev: %i=minor\n", \ |
| 3817 | pvideo_device->minor); |
| 3818 | } |
| 3819 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 3820 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 3821 | break; |
| 3822 | } |
| 3823 | /*--------------------------------------------------------------------------*/ |
| 3824 | /* |
| 3825 | * INTERFACE 1 IS THE AUDIO CONTROL INTERFACE |
| 3826 | * INTERFACE 2 IS THE AUDIO STREAMING INTERFACE |
| 3827 | */ |
| 3828 | /*--------------------------------------------------------------------------*/ |
| 3829 | case 1: { |
| 3830 | /*--------------------------------------------------------------------------*/ |
| 3831 | /* |
| 3832 | * SAVE POINTER peasycap IN INTERFACE 1 |
| 3833 | */ |
| 3834 | /*--------------------------------------------------------------------------*/ |
| 3835 | usb_set_intfdata(pusb_interface, peasycap); |
| 3836 | JOT(4, "no initialization required for interface %i\n", \ |
| 3837 | pusb_interface_descriptor->bInterfaceNumber); |
| 3838 | break; |
| 3839 | } |
| 3840 | /*--------------------------------------------------------------------------*/ |
| 3841 | case 2: { |
| 3842 | if (!peasycap) { |
| 3843 | SAY("MISTAKE: peasycap is NULL\n"); |
| 3844 | return -EFAULT; |
| 3845 | } |
| 3846 | if (!isokalt) { |
| 3847 | SAY("ERROR: no viable audio_altsetting_on\n"); |
| 3848 | return -ENOENT; |
| 3849 | } else { |
| 3850 | peasycap->audio_altsetting_on = okalt[isokalt - 1]; |
| 3851 | JOT(4, "%i=audio_altsetting_on <====\n", \ |
| 3852 | peasycap->audio_altsetting_on); |
| 3853 | } |
| 3854 | if (!isokepn) { |
| 3855 | SAY("ERROR: no viable audio_endpointnumber\n"); |
| 3856 | return -ENOENT; |
| 3857 | } else { |
| 3858 | peasycap->audio_endpointnumber = okepn[isokepn - 1]; |
| 3859 | JOT(4, "%i=audio_endpointnumber\n", \ |
| 3860 | peasycap->audio_endpointnumber); |
| 3861 | } |
| 3862 | if (!isokmps) { |
| 3863 | SAY("ERROR: no viable audio_maxpacketsize\n"); |
| 3864 | return -ENOENT; |
| 3865 | } else { |
| 3866 | peasycap->audio_isoc_maxframesize = okmps[isokmps - 1]; |
| 3867 | JOT(4, "%i=audio_isoc_maxframesize\n", \ |
| 3868 | peasycap->audio_isoc_maxframesize); |
| 3869 | if (0 >= peasycap->audio_isoc_maxframesize) { |
| 3870 | SAY("ERROR: bad audio_isoc_maxframesize\n"); |
| 3871 | return -ENOENT; |
| 3872 | } |
| 3873 | if (9 == peasycap->audio_isoc_maxframesize) { |
| 3874 | peasycap->ilk |= 0x02; |
| 3875 | SAY("hardware is FOUR-CVBS\n"); |
| 3876 | peasycap->microphone = true; |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 3877 | peasycap->audio_pages_per_fragment = 4; |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3878 | } else if (256 == peasycap->audio_isoc_maxframesize) { |
| 3879 | peasycap->ilk &= ~0x02; |
| 3880 | SAY("hardware is CVBS+S-VIDEO\n"); |
| 3881 | peasycap->microphone = false; |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 3882 | peasycap->audio_pages_per_fragment = 4; |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3883 | } else { |
| 3884 | SAY("hardware is unidentified:\n"); |
| 3885 | SAY("%i=audio_isoc_maxframesize\n", \ |
| 3886 | peasycap->audio_isoc_maxframesize); |
| 3887 | return -ENOENT; |
| 3888 | } |
| 3889 | |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 3890 | peasycap->audio_bytes_per_fragment = \ |
| 3891 | peasycap->audio_pages_per_fragment * \ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3892 | PAGE_SIZE ; |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 3893 | peasycap->audio_buffer_page_many = (AUDIO_FRAGMENT_MANY * \ |
| 3894 | peasycap->audio_pages_per_fragment); |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3895 | |
| 3896 | JOT(4, "%6i=AUDIO_FRAGMENT_MANY\n", AUDIO_FRAGMENT_MANY); |
| 3897 | JOT(4, "%6i=audio_pages_per_fragment\n", \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 3898 | peasycap->audio_pages_per_fragment); |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3899 | JOT(4, "%6i=audio_bytes_per_fragment\n", \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 3900 | peasycap->audio_bytes_per_fragment); |
| 3901 | JOT(4, "%6i=audio_buffer_page_many\n", \ |
| 3902 | peasycap->audio_buffer_page_many); |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3903 | |
| 3904 | peasycap->audio_isoc_framesperdesc = 128; |
| 3905 | |
| 3906 | JOT(4, "%i=audio_isoc_framesperdesc\n", \ |
| 3907 | peasycap->audio_isoc_framesperdesc); |
| 3908 | if (0 >= peasycap->audio_isoc_framesperdesc) { |
| 3909 | SAY("ERROR: bad audio_isoc_framesperdesc\n"); |
| 3910 | return -ENOENT; |
| 3911 | } |
| 3912 | |
| 3913 | peasycap->audio_isoc_buffer_size = \ |
| 3914 | peasycap->audio_isoc_maxframesize * \ |
| 3915 | peasycap->audio_isoc_framesperdesc; |
| 3916 | JOT(4, "%i=audio_isoc_buffer_size\n", \ |
| 3917 | peasycap->audio_isoc_buffer_size); |
| 3918 | if (AUDIO_ISOC_BUFFER_SIZE < \ |
| 3919 | peasycap->audio_isoc_buffer_size) { |
| 3920 | SAY("MISTAKE: audio_isoc_buffer_size bigger " |
| 3921 | "than %li=AUDIO_ISOC_BUFFER_SIZE\n", \ |
| 3922 | AUDIO_ISOC_BUFFER_SIZE); |
| 3923 | return -EFAULT; |
| 3924 | } |
| 3925 | } |
| 3926 | |
| 3927 | if (-1 == peasycap->audio_interface) { |
| 3928 | SAY("MISTAKE: audio_interface is unset\n"); |
| 3929 | return -EFAULT; |
| 3930 | } |
| 3931 | if (-1 == peasycap->audio_altsetting_on) { |
| 3932 | SAY("MISTAKE: audio_altsetting_on is unset\n"); |
| 3933 | return -EFAULT; |
| 3934 | } |
| 3935 | if (-1 == peasycap->audio_altsetting_off) { |
| 3936 | SAY("MISTAKE: audio_interface_off is unset\n"); |
| 3937 | return -EFAULT; |
| 3938 | } |
| 3939 | if (-1 == peasycap->audio_endpointnumber) { |
| 3940 | SAY("MISTAKE: audio_endpointnumber is unset\n"); |
| 3941 | return -EFAULT; |
| 3942 | } |
| 3943 | if (-1 == peasycap->audio_isoc_maxframesize) { |
| 3944 | SAY("MISTAKE: audio_isoc_maxframesize is unset\n"); |
| 3945 | return -EFAULT; |
| 3946 | } |
| 3947 | if (-1 == peasycap->audio_isoc_buffer_size) { |
| 3948 | SAY("MISTAKE: audio_isoc_buffer_size is unset\n"); |
| 3949 | return -EFAULT; |
| 3950 | } |
| 3951 | /*---------------------------------------------------------------------------*/ |
| 3952 | /* |
| 3953 | * ALLOCATE MEMORY FOR AUDIO BUFFERS. LISTS MUST BE INITIALIZED FIRST. |
| 3954 | */ |
| 3955 | /*---------------------------------------------------------------------------*/ |
| 3956 | INIT_LIST_HEAD(&(peasycap->urb_audio_head)); |
| 3957 | peasycap->purb_audio_head = &(peasycap->urb_audio_head); |
| 3958 | |
| 3959 | JOT(4, "allocating an audio buffer\n"); |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 3960 | JOT(4, ".... scattered over %i pages\n", \ |
| 3961 | peasycap->audio_buffer_page_many); |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3962 | |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 3963 | for (k = 0; k < peasycap->audio_buffer_page_many; k++) { |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 3964 | if ((void *)NULL != peasycap->audio_buffer[k].pgo) { |
| 3965 | SAY("ERROR: attempting to reallocate audio buffers\n"); |
| 3966 | } else { |
| 3967 | pbuf = (void *) __get_free_page(GFP_KERNEL); |
| 3968 | if ((void *)NULL == pbuf) { |
| 3969 | SAY("ERROR: Could not allocate audio " \ |
| 3970 | "buffer page %i\n", k); |
| 3971 | return -ENOMEM; |
| 3972 | } else |
| 3973 | peasycap->allocation_audio_page += 1; |
| 3974 | |
| 3975 | peasycap->audio_buffer[k].pgo = pbuf; |
| 3976 | } |
| 3977 | peasycap->audio_buffer[k].pto = peasycap->audio_buffer[k].pgo; |
| 3978 | } |
| 3979 | |
| 3980 | peasycap->audio_fill = 0; |
| 3981 | peasycap->audio_read = 0; |
| 3982 | JOT(4, "allocation of audio buffer done: %i pages\n", k); |
| 3983 | /*---------------------------------------------------------------------------*/ |
| 3984 | JOT(4, "allocating %i isoc audio buffers of size %i\n", \ |
| 3985 | AUDIO_ISOC_BUFFER_MANY, peasycap->audio_isoc_buffer_size); |
| 3986 | JOT(4, ".... each occupying contiguous memory pages\n"); |
| 3987 | |
| 3988 | for (k = 0; k < AUDIO_ISOC_BUFFER_MANY; k++) { |
| 3989 | pbuf = (void *)__get_free_pages(GFP_KERNEL, AUDIO_ISOC_ORDER); |
| 3990 | if (NULL == pbuf) { |
| 3991 | SAY("ERROR: Could not allocate isoc audio buffer " \ |
| 3992 | "%i\n", k); |
| 3993 | return -ENOMEM; |
| 3994 | } else |
| 3995 | peasycap->allocation_audio_page += \ |
| 3996 | ((unsigned int)(0x01 << AUDIO_ISOC_ORDER)); |
| 3997 | |
| 3998 | peasycap->audio_isoc_buffer[k].pgo = pbuf; |
| 3999 | peasycap->audio_isoc_buffer[k].pto = pbuf + \ |
| 4000 | peasycap->audio_isoc_buffer_size; |
| 4001 | peasycap->audio_isoc_buffer[k].kount = k; |
| 4002 | } |
| 4003 | JOT(4, "allocation of isoc audio buffers done.\n"); |
| 4004 | /*---------------------------------------------------------------------------*/ |
| 4005 | /* |
| 4006 | * ALLOCATE AND INITIALIZE MULTIPLE struct urb ... |
| 4007 | */ |
| 4008 | /*---------------------------------------------------------------------------*/ |
| 4009 | JOT(4, "allocating %i struct urb.\n", AUDIO_ISOC_BUFFER_MANY); |
| 4010 | JOT(4, "using %i=peasycap->audio_isoc_framesperdesc\n", \ |
| 4011 | peasycap->audio_isoc_framesperdesc); |
| 4012 | JOT(4, "using %i=peasycap->audio_isoc_maxframesize\n", \ |
| 4013 | peasycap->audio_isoc_maxframesize); |
| 4014 | JOT(4, "using %i=peasycap->audio_isoc_buffer_size\n", \ |
| 4015 | peasycap->audio_isoc_buffer_size); |
| 4016 | |
| 4017 | for (k = 0; k < AUDIO_ISOC_BUFFER_MANY; k++) { |
| 4018 | purb = usb_alloc_urb(peasycap->audio_isoc_framesperdesc, \ |
| 4019 | GFP_KERNEL); |
| 4020 | if (NULL == purb) { |
| 4021 | SAY("ERROR: usb_alloc_urb returned NULL for buffer " \ |
| 4022 | "%i\n", k); |
| 4023 | return -ENOMEM; |
| 4024 | } else |
| 4025 | peasycap->allocation_audio_urb += 1 ; |
| 4026 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |
| 4027 | pdata_urb = kzalloc(sizeof(struct data_urb), GFP_KERNEL); |
| 4028 | if (NULL == pdata_urb) { |
| 4029 | SAY("ERROR: Could not allocate struct data_urb.\n"); |
| 4030 | return -ENOMEM; |
| 4031 | } else |
| 4032 | peasycap->allocation_audio_struct += \ |
| 4033 | sizeof(struct data_urb); |
| 4034 | |
| 4035 | pdata_urb->purb = purb; |
| 4036 | pdata_urb->isbuf = k; |
| 4037 | pdata_urb->length = 0; |
| 4038 | list_add_tail(&(pdata_urb->list_head), \ |
| 4039 | peasycap->purb_audio_head); |
| 4040 | /*---------------------------------------------------------------------------*/ |
| 4041 | /* |
| 4042 | * ... AND INITIALIZE THEM |
| 4043 | */ |
| 4044 | /*---------------------------------------------------------------------------*/ |
| 4045 | if (!k) { |
| 4046 | JOT(4, "initializing audio urbs thus:\n"); |
| 4047 | JOT(4, " purb->interval = 1;\n"); |
| 4048 | JOT(4, " purb->dev = peasycap->pusb_device;\n"); |
| 4049 | JOT(4, " purb->pipe = usb_rcvisocpipe(peasycap->" \ |
| 4050 | "pusb_device,%i);\n", \ |
| 4051 | peasycap->audio_endpointnumber); |
| 4052 | JOT(4, " purb->transfer_flags = URB_ISO_ASAP;\n"); |
| 4053 | JOT(4, " purb->transfer_buffer = " \ |
| 4054 | "peasycap->audio_isoc_buffer[.].pgo;\n"); |
| 4055 | JOT(4, " purb->transfer_buffer_length = %i;\n", \ |
| 4056 | peasycap->audio_isoc_buffer_size); |
| 4057 | JOT(4, " purb->complete = easysnd_complete;\n"); |
| 4058 | JOT(4, " purb->context = peasycap;\n"); |
| 4059 | JOT(4, " purb->start_frame = 0;\n"); |
| 4060 | JOT(4, " purb->number_of_packets = %i;\n", \ |
| 4061 | peasycap->audio_isoc_framesperdesc); |
| 4062 | JOT(4, " for (j = 0; j < %i; j++)\n", \ |
| 4063 | peasycap->audio_isoc_framesperdesc); |
| 4064 | JOT(4, " {\n"); |
| 4065 | JOT(4, " purb->iso_frame_desc[j].offset = j*%i;\n",\ |
| 4066 | peasycap->audio_isoc_maxframesize); |
| 4067 | JOT(4, " purb->iso_frame_desc[j].length = %i;\n", \ |
| 4068 | peasycap->audio_isoc_maxframesize); |
| 4069 | JOT(4, " }\n"); |
| 4070 | } |
| 4071 | |
| 4072 | purb->interval = 1; |
| 4073 | purb->dev = peasycap->pusb_device; |
| 4074 | purb->pipe = usb_rcvisocpipe(peasycap->pusb_device, \ |
| 4075 | peasycap->audio_endpointnumber); |
| 4076 | purb->transfer_flags = URB_ISO_ASAP; |
| 4077 | purb->transfer_buffer = peasycap->audio_isoc_buffer[k].pgo; |
| 4078 | purb->transfer_buffer_length = \ |
| 4079 | peasycap->audio_isoc_buffer_size; |
| 4080 | purb->complete = easysnd_complete; |
| 4081 | purb->context = peasycap; |
| 4082 | purb->start_frame = 0; |
| 4083 | purb->number_of_packets = peasycap->audio_isoc_framesperdesc; |
| 4084 | for (j = 0; j < peasycap->audio_isoc_framesperdesc; j++) { |
| 4085 | purb->iso_frame_desc[j].offset = j * \ |
| 4086 | peasycap->audio_isoc_maxframesize; |
| 4087 | purb->iso_frame_desc[j].length = \ |
| 4088 | peasycap->audio_isoc_maxframesize; |
| 4089 | } |
| 4090 | } |
| 4091 | JOT(4, "allocation of %i struct urb done.\n", k); |
| 4092 | /*---------------------------------------------------------------------------*/ |
| 4093 | /* |
| 4094 | * SAVE POINTER peasycap IN THIS INTERFACE. |
| 4095 | */ |
| 4096 | /*---------------------------------------------------------------------------*/ |
| 4097 | usb_set_intfdata(pusb_interface, peasycap); |
| 4098 | /*---------------------------------------------------------------------------*/ |
| 4099 | /* |
| 4100 | * THE AUDIO DEVICE CAN BE REGISTERED NOW, AS IT IS READY. |
| 4101 | */ |
| 4102 | /*---------------------------------------------------------------------------*/ |
| 4103 | rc = usb_register_dev(pusb_interface, &easysnd_class); |
| 4104 | if (0 != rc) { |
| 4105 | err("Not able to get a minor for this device."); |
| 4106 | usb_set_intfdata(pusb_interface, NULL); |
| 4107 | return -ENODEV; |
| 4108 | } else |
| 4109 | (peasycap->registered_audio)++; |
| 4110 | /*---------------------------------------------------------------------------*/ |
| 4111 | /* |
| 4112 | * LET THE USER KNOW WHAT NODE THE AUDIO DEVICE IS ATTACHED TO. |
| 4113 | */ |
| 4114 | /*---------------------------------------------------------------------------*/ |
| 4115 | SAY("easysnd attached to minor #%d\n", pusb_interface->minor); |
| 4116 | break; |
| 4117 | } |
| 4118 | /*---------------------------------------------------------------------------*/ |
| 4119 | /* |
| 4120 | * INTERFACES OTHER THAN 0, 1 AND 2 ARE UNEXPECTED |
| 4121 | */ |
| 4122 | /*---------------------------------------------------------------------------*/ |
| 4123 | default: { |
| 4124 | JOT(4, "ERROR: unexpected interface %i\n", bInterfaceNumber); |
| 4125 | return -EINVAL; |
| 4126 | } |
| 4127 | } |
| 4128 | JOT(4, "ends successfully for interface %i\n", \ |
| 4129 | pusb_interface_descriptor->bInterfaceNumber); |
| 4130 | return 0; |
| 4131 | } |
| 4132 | /*****************************************************************************/ |
| 4133 | /*---------------------------------------------------------------------------*/ |
| 4134 | /* |
| 4135 | * WHEN THIS FUNCTION IS CALLED THE DEVICE HAS ALREADY BEEN PHYSICALLY |
| 4136 | * UNPLUGGED. |
| 4137 | * HENCE peasycap->pusb_device IS NO LONGER VALID AND MUST BE SET TO NULL. |
| 4138 | */ |
| 4139 | /*---------------------------------------------------------------------------*/ |
| 4140 | void |
| 4141 | easycap_usb_disconnect(struct usb_interface *pusb_interface) |
| 4142 | { |
| 4143 | struct usb_host_interface *pusb_host_interface; |
| 4144 | struct usb_interface_descriptor *pusb_interface_descriptor; |
| 4145 | __u8 bInterfaceNumber; |
| 4146 | struct easycap *peasycap; |
| 4147 | |
| 4148 | struct list_head *plist_head; |
| 4149 | struct data_urb *pdata_urb; |
| 4150 | int minor, m; |
| 4151 | |
| 4152 | JOT(4, "\n"); |
| 4153 | |
| 4154 | if ((struct usb_interface *)NULL == pusb_interface) { |
| 4155 | JOT(4, "ERROR: pusb_interface is NULL\n"); |
| 4156 | return; |
| 4157 | } |
| 4158 | pusb_host_interface = pusb_interface->cur_altsetting; |
| 4159 | if ((struct usb_host_interface *)NULL == pusb_host_interface) { |
| 4160 | JOT(4, "ERROR: pusb_host_interface is NULL\n"); |
| 4161 | return; |
| 4162 | } |
| 4163 | pusb_interface_descriptor = &(pusb_host_interface->desc); |
| 4164 | if ((struct usb_interface_descriptor *)NULL == pusb_interface_descriptor) { |
| 4165 | JOT(4, "ERROR: pusb_interface_descriptor is NULL\n"); |
| 4166 | return; |
| 4167 | } |
| 4168 | bInterfaceNumber = pusb_interface_descriptor->bInterfaceNumber; |
| 4169 | minor = pusb_interface->minor; |
| 4170 | JOT(4, "intf[%i]: minor=%i\n", bInterfaceNumber, minor); |
| 4171 | |
| 4172 | peasycap = usb_get_intfdata(pusb_interface); |
| 4173 | if ((struct easycap *)NULL == peasycap) |
| 4174 | SAY("ERROR: peasycap is NULL\n"); |
| 4175 | else { |
| 4176 | peasycap->pusb_device = (struct usb_device *)NULL; |
| 4177 | switch (bInterfaceNumber) { |
| 4178 | /*---------------------------------------------------------------------------*/ |
| 4179 | case 0: { |
| 4180 | if ((struct list_head *)NULL != peasycap->purb_video_head) { |
| 4181 | JOT(4, "killing video urbs\n"); |
| 4182 | m = 0; |
| 4183 | list_for_each(plist_head, (peasycap->purb_video_head)) |
| 4184 | { |
| 4185 | pdata_urb = list_entry(plist_head, \ |
| 4186 | struct data_urb, list_head); |
| 4187 | if ((struct data_urb *)NULL != pdata_urb) { |
| 4188 | if ((struct urb *)NULL != \ |
| 4189 | pdata_urb->purb) { |
| 4190 | usb_kill_urb(pdata_urb->purb); |
| 4191 | m++; |
| 4192 | } |
| 4193 | } |
| 4194 | } |
| 4195 | JOT(4, "%i video urbs killed\n", m); |
| 4196 | } else |
| 4197 | SAY("ERROR: peasycap->purb_video_head is NULL\n"); |
| 4198 | break; |
| 4199 | } |
| 4200 | /*---------------------------------------------------------------------------*/ |
| 4201 | case 2: { |
| 4202 | if ((struct list_head *)NULL != peasycap->purb_audio_head) { |
| 4203 | JOT(4, "killing audio urbs\n"); |
| 4204 | m = 0; |
| 4205 | list_for_each(plist_head, \ |
| 4206 | (peasycap->purb_audio_head)) { |
| 4207 | pdata_urb = list_entry(plist_head, \ |
| 4208 | struct data_urb, list_head); |
| 4209 | if ((struct data_urb *)NULL != pdata_urb) { |
| 4210 | if ((struct urb *)NULL != \ |
| 4211 | pdata_urb->purb) { |
| 4212 | usb_kill_urb(pdata_urb->purb); |
| 4213 | m++; |
| 4214 | } |
| 4215 | } |
| 4216 | } |
| 4217 | JOT(4, "%i audio urbs killed\n", m); |
| 4218 | } else |
| 4219 | SAY("ERROR: peasycap->purb_audio_head is NULL\n"); |
| 4220 | break; |
| 4221 | } |
| 4222 | /*---------------------------------------------------------------------------*/ |
| 4223 | default: |
| 4224 | break; |
| 4225 | } |
| 4226 | } |
| 4227 | /*--------------------------------------------------------------------------*/ |
| 4228 | /* |
| 4229 | * DEREGISTER |
| 4230 | */ |
| 4231 | /*--------------------------------------------------------------------------*/ |
| 4232 | switch (bInterfaceNumber) { |
| 4233 | case 0: { |
| 4234 | #if (!defined(EASYCAP_IS_VIDEODEV_CLIENT)) |
| 4235 | if ((struct easycap *)NULL == peasycap) { |
| 4236 | SAY("ERROR: peasycap has become NULL\n"); |
| 4237 | } else { |
| 4238 | lock_kernel(); |
| 4239 | usb_deregister_dev(pusb_interface, &easycap_class); |
| 4240 | (peasycap->registered_video)--; |
| 4241 | |
| 4242 | JOT(4, "intf[%i]: usb_deregister_dev()\n", bInterfaceNumber); |
| 4243 | unlock_kernel(); |
| 4244 | SAY("easycap detached from minor #%d\n", minor); |
| 4245 | } |
| 4246 | /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ |
| 4247 | #else |
| 4248 | if ((struct easycap *)NULL == peasycap) |
| 4249 | SAY("ERROR: peasycap has become NULL\n"); |
| 4250 | else { |
| 4251 | lock_kernel(); |
| 4252 | video_unregister_device(peasycap->pvideo_device); |
| 4253 | (peasycap->registered_video)--; |
| 4254 | unlock_kernel(); |
| 4255 | JOT(4, "unregistered with videodev: %i=minor\n", \ |
| 4256 | pvideo_device->minor); |
| 4257 | } |
| 4258 | /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ |
| 4259 | #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ |
| 4260 | break; |
| 4261 | } |
| 4262 | case 2: { |
| 4263 | lock_kernel(); |
| 4264 | |
| 4265 | usb_deregister_dev(pusb_interface, &easysnd_class); |
| 4266 | if ((struct easycap *)NULL != peasycap) |
| 4267 | (peasycap->registered_audio)--; |
| 4268 | |
| 4269 | JOT(4, "intf[%i]: usb_deregister_dev()\n", bInterfaceNumber); |
| 4270 | unlock_kernel(); |
| 4271 | |
| 4272 | SAY("easysnd detached from minor #%d\n", minor); |
| 4273 | break; |
| 4274 | } |
| 4275 | default: |
| 4276 | break; |
| 4277 | } |
| 4278 | /*---------------------------------------------------------------------------*/ |
| 4279 | /* |
| 4280 | * CALL easycap_delete() IF NO REMAINING REFERENCES TO peasycap |
| 4281 | */ |
| 4282 | /*---------------------------------------------------------------------------*/ |
| 4283 | if ((struct easycap *)NULL == peasycap) { |
| 4284 | SAY("ERROR: peasycap has become NULL\n"); |
| 4285 | SAY("cannot call kref_put()\n"); |
| 4286 | SAY("ending unsuccessfully: may cause memory leak\n"); |
| 4287 | return; |
| 4288 | } |
| 4289 | if (!peasycap->kref.refcount.counter) { |
| 4290 | SAY("ERROR: peasycap->kref.refcount.counter is zero " \ |
| 4291 | "so cannot call kref_put()\n"); |
| 4292 | SAY("ending unsuccessfully: may cause memory leak\n"); |
| 4293 | return; |
| 4294 | } |
| 4295 | JOT(4, "intf[%i]: kref_put() with %i=peasycap->kref.refcount.counter\n", \ |
| 4296 | bInterfaceNumber, (int)peasycap->kref.refcount.counter); |
| 4297 | kref_put(&peasycap->kref, easycap_delete); |
| 4298 | JOT(4, "intf[%i]: kref_put() done.\n", bInterfaceNumber); |
| 4299 | /*---------------------------------------------------------------------------*/ |
| 4300 | |
| 4301 | JOT(4, "ends\n"); |
| 4302 | return; |
| 4303 | } |
| 4304 | /*****************************************************************************/ |
| 4305 | int __init |
| 4306 | easycap_module_init(void) |
| 4307 | { |
| 4308 | int result; |
| 4309 | |
| 4310 | SAY("========easycap=======\n"); |
| 4311 | JOT(4, "begins. %i=debug\n", easycap_debug); |
| 4312 | SAY("version: " EASYCAP_DRIVER_VERSION "\n"); |
| 4313 | /*---------------------------------------------------------------------------*/ |
| 4314 | /* |
| 4315 | * REGISTER THIS DRIVER WITH THE USB SUBSYTEM. |
| 4316 | */ |
| 4317 | /*---------------------------------------------------------------------------*/ |
| 4318 | JOT(4, "registering driver easycap\n"); |
| 4319 | |
| 4320 | result = usb_register(&easycap_usb_driver); |
| 4321 | if (0 != result) |
| 4322 | SAY("ERROR: usb_register returned %i\n", result); |
| 4323 | |
| 4324 | JOT(4, "ends\n"); |
| 4325 | return result; |
| 4326 | } |
| 4327 | /*****************************************************************************/ |
| 4328 | void __exit |
| 4329 | easycap_module_exit(void) |
| 4330 | { |
| 4331 | JOT(4, "begins\n"); |
| 4332 | |
| 4333 | /*---------------------------------------------------------------------------*/ |
| 4334 | /* |
| 4335 | * DEREGISTER THIS DRIVER WITH THE USB SUBSYTEM. |
| 4336 | */ |
| 4337 | /*---------------------------------------------------------------------------*/ |
| 4338 | usb_deregister(&easycap_usb_driver); |
| 4339 | |
| 4340 | JOT(4, "ends\n"); |
| 4341 | } |
| 4342 | /*****************************************************************************/ |
| 4343 | |
| 4344 | module_init(easycap_module_init); |
| 4345 | module_exit(easycap_module_exit); |
| 4346 | |
| 4347 | MODULE_LICENSE("GPL"); |
| 4348 | MODULE_AUTHOR("R.M. Thomas <rmthomas@sciolus.org>"); |
| 4349 | MODULE_DESCRIPTION(EASYCAP_DRIVER_DESCRIPTION); |
| 4350 | MODULE_VERSION(EASYCAP_DRIVER_VERSION); |
| 4351 | #if defined(EASYCAP_DEBUG) |
| 4352 | MODULE_PARM_DESC(easycap_debug, "debug: 0 (default), 1, 2,..."); |
| 4353 | #endif /*EASYCAP_DEBUG*/ |
| 4354 | /*****************************************************************************/ |