R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * * |
| 3 | * easycap_sound.c * |
| 4 | * * |
| 5 | * Audio 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_debug.h" |
| 33 | #include "easycap_sound.h" |
| 34 | |
| 35 | /*****************************************************************************/ |
| 36 | /*---------------------------------------------------------------------------*/ |
| 37 | /* |
| 38 | * ON COMPLETION OF AN AUDIO URB ITS DATA IS COPIED TO THE AUDIO BUFFERS |
| 39 | * PROVIDED peasycap->audio_idle IS ZER0. REGARDLESS OF THIS BEING TRUE, |
| 40 | * IT IS RESUBMITTED PROVIDED peasycap->audio_isoc_streaming IS NOT ZERO. |
| 41 | */ |
| 42 | /*---------------------------------------------------------------------------*/ |
| 43 | void |
| 44 | easysnd_complete(struct urb *purb) |
| 45 | { |
| 46 | static int mt; |
| 47 | struct easycap *peasycap; |
| 48 | struct data_buffer *paudio_buffer; |
| 49 | char errbuf[16]; |
| 50 | __u8 *p1, *p2; |
| 51 | __s16 s16; |
| 52 | int i, j, more, much, leap, rc; |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 53 | #if defined(UPSAMPLE) |
| 54 | int k; |
| 55 | __s16 oldaudio, newaudio, delta; |
| 56 | #endif /*UPSAMPLE*/ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 57 | |
| 58 | JOT(16, "\n"); |
| 59 | |
| 60 | if (NULL == purb) { |
| 61 | SAY("ERROR: purb is NULL\n"); |
| 62 | return; |
| 63 | } |
| 64 | peasycap = purb->context; |
| 65 | if (NULL == peasycap) { |
| 66 | SAY("ERROR: peasycap is NULL\n"); |
| 67 | return; |
| 68 | } |
| 69 | much = 0; |
| 70 | |
| 71 | |
| 72 | if (peasycap->audio_idle) { |
| 73 | JOT(16, "%i=audio_idle %i=audio_isoc_streaming\n", \ |
| 74 | peasycap->audio_idle, peasycap->audio_isoc_streaming); |
| 75 | if (peasycap->audio_isoc_streaming) { |
| 76 | rc = usb_submit_urb(purb, GFP_ATOMIC); |
| 77 | if (0 != rc) { |
| 78 | SAY("ERROR: while %i=audio_idle, " \ |
| 79 | "usb_submit_urb() failed with rc:\n", \ |
| 80 | peasycap->audio_idle); |
| 81 | switch (rc) { |
| 82 | case -ENOMEM: { |
| 83 | SAY("ENOMEM\n"); break; |
| 84 | } |
| 85 | case -ENODEV: { |
| 86 | SAY("ENODEV\n"); break; |
| 87 | } |
| 88 | case -ENXIO: { |
| 89 | SAY("ENXIO\n"); break; |
| 90 | } |
| 91 | case -EINVAL: { |
| 92 | SAY("EINVAL\n"); break; |
| 93 | } |
| 94 | case -EAGAIN: { |
| 95 | SAY("EAGAIN\n"); break; |
| 96 | } |
| 97 | case -EFBIG: { |
| 98 | SAY("EFBIG\n"); break; |
| 99 | } |
| 100 | case -EPIPE: { |
| 101 | SAY("EPIPE\n"); break; |
| 102 | } |
| 103 | case -EMSGSIZE: { |
| 104 | SAY("EMSGSIZE\n"); break; |
| 105 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 106 | case -ENOSPC: { |
| 107 | SAY("ENOSPC\n"); break; |
| 108 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 109 | default: { |
| 110 | SAY("0x%08X\n", rc); break; |
| 111 | } |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | return; |
| 116 | } |
| 117 | /*---------------------------------------------------------------------------*/ |
| 118 | if (purb->status) { |
| 119 | if (-ESHUTDOWN == purb->status) { |
| 120 | JOT(16, "immediate return because -ESHUTDOWN=purb->status\n"); |
| 121 | return; |
| 122 | } |
| 123 | SAY("ERROR: non-zero urb status:\n"); |
| 124 | switch (purb->status) { |
| 125 | case -EINPROGRESS: { |
| 126 | SAY("-EINPROGRESS\n"); break; |
| 127 | } |
| 128 | case -ENOSR: { |
| 129 | SAY("-ENOSR\n"); break; |
| 130 | } |
| 131 | case -EPIPE: { |
| 132 | SAY("-EPIPE\n"); break; |
| 133 | } |
| 134 | case -EOVERFLOW: { |
| 135 | SAY("-EOVERFLOW\n"); break; |
| 136 | } |
| 137 | case -EPROTO: { |
| 138 | SAY("-EPROTO\n"); break; |
| 139 | } |
| 140 | case -EILSEQ: { |
| 141 | SAY("-EILSEQ\n"); break; |
| 142 | } |
| 143 | case -ETIMEDOUT: { |
| 144 | SAY("-ETIMEDOUT\n"); break; |
| 145 | } |
| 146 | case -EMSGSIZE: { |
| 147 | SAY("-EMSGSIZE\n"); break; |
| 148 | } |
| 149 | case -EOPNOTSUPP: { |
| 150 | SAY("-EOPNOTSUPP\n"); break; |
| 151 | } |
| 152 | case -EPFNOSUPPORT: { |
| 153 | SAY("-EPFNOSUPPORT\n"); break; |
| 154 | } |
| 155 | case -EAFNOSUPPORT: { |
| 156 | SAY("-EAFNOSUPPORT\n"); break; |
| 157 | } |
| 158 | case -EADDRINUSE: { |
| 159 | SAY("-EADDRINUSE\n"); break; |
| 160 | } |
| 161 | case -EADDRNOTAVAIL: { |
| 162 | SAY("-EADDRNOTAVAIL\n"); break; |
| 163 | } |
| 164 | case -ENOBUFS: { |
| 165 | SAY("-ENOBUFS\n"); break; |
| 166 | } |
| 167 | case -EISCONN: { |
| 168 | SAY("-EISCONN\n"); break; |
| 169 | } |
| 170 | case -ENOTCONN: { |
| 171 | SAY("-ENOTCONN\n"); break; |
| 172 | } |
| 173 | case -ESHUTDOWN: { |
| 174 | SAY("-ESHUTDOWN\n"); break; |
| 175 | } |
| 176 | case -ENOENT: { |
| 177 | SAY("-ENOENT\n"); break; |
| 178 | } |
| 179 | case -ECONNRESET: { |
| 180 | SAY("-ECONNRESET\n"); break; |
| 181 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 182 | case -ENOSPC: { |
| 183 | SAY("ENOSPC\n"); break; |
| 184 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 185 | default: { |
| 186 | SAY("unknown error code 0x%08X\n", purb->status); break; |
| 187 | } |
| 188 | } |
| 189 | /*---------------------------------------------------------------------------*/ |
| 190 | /* |
| 191 | * RESUBMIT THIS URB AFTER AN ERROR |
| 192 | * |
| 193 | * (THIS IS DUPLICATE CODE TO REDUCE INDENTATION OF THE NO-ERROR PATH) |
| 194 | */ |
| 195 | /*---------------------------------------------------------------------------*/ |
| 196 | if (peasycap->audio_isoc_streaming) { |
| 197 | rc = usb_submit_urb(purb, GFP_ATOMIC); |
| 198 | if (0 != rc) { |
| 199 | SAY("ERROR: while %i=audio_idle, usb_submit_urb() " |
| 200 | "failed with rc:\n", peasycap->audio_idle); |
| 201 | switch (rc) { |
| 202 | case -ENOMEM: { |
| 203 | SAY("ENOMEM\n"); break; |
| 204 | } |
| 205 | case -ENODEV: { |
| 206 | SAY("ENODEV\n"); break; |
| 207 | } |
| 208 | case -ENXIO: { |
| 209 | SAY("ENXIO\n"); break; |
| 210 | } |
| 211 | case -EINVAL: { |
| 212 | SAY("EINVAL\n"); break; |
| 213 | } |
| 214 | case -EAGAIN: { |
| 215 | SAY("EAGAIN\n"); break; |
| 216 | } |
| 217 | case -EFBIG: { |
| 218 | SAY("EFBIG\n"); break; |
| 219 | } |
| 220 | case -EPIPE: { |
| 221 | SAY("EPIPE\n"); break; |
| 222 | } |
| 223 | case -EMSGSIZE: { |
| 224 | SAY("EMSGSIZE\n"); break; |
| 225 | } |
| 226 | default: { |
| 227 | SAY("0x%08X\n", rc); break; |
| 228 | } |
| 229 | } |
| 230 | } |
| 231 | } |
| 232 | return; |
| 233 | } |
| 234 | /*---------------------------------------------------------------------------*/ |
| 235 | /* |
| 236 | * PROCEED HERE WHEN NO ERROR |
| 237 | */ |
| 238 | /*---------------------------------------------------------------------------*/ |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 239 | #if defined(UPSAMPLE) |
| 240 | oldaudio = peasycap->oldaudio; |
| 241 | #endif /*UPSAMPLE*/ |
| 242 | |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 243 | for (i = 0; i < purb->number_of_packets; i++) { |
| 244 | switch (purb->iso_frame_desc[i].status) { |
| 245 | case 0: { |
| 246 | strcpy(&errbuf[0], "OK"); break; |
| 247 | } |
| 248 | case -ENOENT: { |
| 249 | strcpy(&errbuf[0], "-ENOENT"); break; |
| 250 | } |
| 251 | case -EINPROGRESS: { |
| 252 | strcpy(&errbuf[0], "-EINPROGRESS"); break; |
| 253 | } |
| 254 | case -EPROTO: { |
| 255 | strcpy(&errbuf[0], "-EPROTO"); break; |
| 256 | } |
| 257 | case -EILSEQ: { |
| 258 | strcpy(&errbuf[0], "-EILSEQ"); break; |
| 259 | } |
| 260 | case -ETIME: { |
| 261 | strcpy(&errbuf[0], "-ETIME"); break; |
| 262 | } |
| 263 | case -ETIMEDOUT: { |
| 264 | strcpy(&errbuf[0], "-ETIMEDOUT"); break; |
| 265 | } |
| 266 | case -EPIPE: { |
| 267 | strcpy(&errbuf[0], "-EPIPE"); break; |
| 268 | } |
| 269 | case -ECOMM: { |
| 270 | strcpy(&errbuf[0], "-ECOMM"); break; |
| 271 | } |
| 272 | case -ENOSR: { |
| 273 | strcpy(&errbuf[0], "-ENOSR"); break; |
| 274 | } |
| 275 | case -EOVERFLOW: { |
| 276 | strcpy(&errbuf[0], "-EOVERFLOW"); break; |
| 277 | } |
| 278 | case -EREMOTEIO: { |
| 279 | strcpy(&errbuf[0], "-EREMOTEIO"); break; |
| 280 | } |
| 281 | case -ENODEV: { |
| 282 | strcpy(&errbuf[0], "-ENODEV"); break; |
| 283 | } |
| 284 | case -EXDEV: { |
| 285 | strcpy(&errbuf[0], "-EXDEV"); break; |
| 286 | } |
| 287 | case -EINVAL: { |
| 288 | strcpy(&errbuf[0], "-EINVAL"); break; |
| 289 | } |
| 290 | case -ECONNRESET: { |
| 291 | strcpy(&errbuf[0], "-ECONNRESET"); break; |
| 292 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 293 | case -ENOSPC: { |
| 294 | strcpy(&errbuf[0], "-ENOSPC"); break; |
| 295 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 296 | case -ESHUTDOWN: { |
| 297 | strcpy(&errbuf[0], "-ESHUTDOWN"); break; |
| 298 | } |
| 299 | default: { |
| 300 | strcpy(&errbuf[0], "UNKNOWN"); break; |
| 301 | } |
| 302 | } |
| 303 | if ((!purb->iso_frame_desc[i].status) && 0) { |
| 304 | JOT(16, "frame[%2i]: %i=status{=%16s} " \ |
| 305 | "%5i=actual " \ |
| 306 | "%5i=length " \ |
| 307 | "%3i=offset\n", \ |
| 308 | i, purb->iso_frame_desc[i].status, &errbuf[0], |
| 309 | purb->iso_frame_desc[i].actual_length, |
| 310 | purb->iso_frame_desc[i].length, |
| 311 | purb->iso_frame_desc[i].offset); |
| 312 | } |
| 313 | if (!purb->iso_frame_desc[i].status) { |
| 314 | more = purb->iso_frame_desc[i].actual_length; |
| 315 | |
| 316 | #if defined(TESTTONE) |
| 317 | if (!more) |
| 318 | more = purb->iso_frame_desc[i].length; |
| 319 | #endif |
| 320 | |
| 321 | if (!more) |
| 322 | mt++; |
| 323 | else { |
| 324 | if (mt) { |
| 325 | JOT(16, "%4i empty audio urb frames\n", mt); |
| 326 | mt = 0; |
| 327 | } |
| 328 | |
| 329 | p1 = (__u8 *)(purb->transfer_buffer + \ |
| 330 | purb->iso_frame_desc[i].offset); |
| 331 | |
| 332 | leap = 0; |
| 333 | p1 += leap; |
| 334 | more -= leap; |
| 335 | /*---------------------------------------------------------------------------*/ |
| 336 | /* |
| 337 | * COPY more BYTES FROM ISOC BUFFER TO AUDIO BUFFER, |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 338 | * CONVERTING 8-BIT MONO TO 16-BIT SIGNED LITTLE-ENDIAN SAMPLES IF NECESSARY |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 339 | */ |
| 340 | /*---------------------------------------------------------------------------*/ |
| 341 | while (more) { |
| 342 | if (0 > more) { |
| 343 | SAY("easysnd_complete: MISTAKE: " \ |
| 344 | "more is negative\n"); |
| 345 | return; |
| 346 | } |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 347 | if (peasycap->audio_buffer_page_many <= \ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 348 | peasycap->audio_fill) { |
| 349 | SAY("ERROR: bad " \ |
| 350 | "peasycap->audio_fill\n"); |
| 351 | return; |
| 352 | } |
| 353 | |
| 354 | paudio_buffer = &peasycap->audio_buffer\ |
| 355 | [peasycap->audio_fill]; |
| 356 | if (PAGE_SIZE < (paudio_buffer->pto - \ |
| 357 | paudio_buffer->pgo)) { |
| 358 | SAY("ERROR: bad paudio_buffer->pto\n"); |
| 359 | return; |
| 360 | } |
| 361 | if (PAGE_SIZE == (paudio_buffer->pto - \ |
| 362 | paudio_buffer->pgo)) { |
| 363 | |
| 364 | #if defined(TESTTONE) |
| 365 | easysnd_testtone(peasycap, \ |
| 366 | peasycap->audio_fill); |
| 367 | #endif /*TESTTONE*/ |
| 368 | |
| 369 | paudio_buffer->pto = \ |
| 370 | paudio_buffer->pgo; |
| 371 | (peasycap->audio_fill)++; |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 372 | if (peasycap->\ |
| 373 | audio_buffer_page_many <= \ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 374 | peasycap->audio_fill) |
| 375 | peasycap->audio_fill = 0; |
| 376 | |
| 377 | JOT(12, "bumped peasycap->" \ |
| 378 | "audio_fill to %i\n", \ |
| 379 | peasycap->audio_fill); |
| 380 | |
| 381 | paudio_buffer = &peasycap->\ |
| 382 | audio_buffer\ |
| 383 | [peasycap->audio_fill]; |
| 384 | paudio_buffer->pto = \ |
| 385 | paudio_buffer->pgo; |
| 386 | |
| 387 | if (!(peasycap->audio_fill % \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 388 | peasycap->\ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 389 | audio_pages_per_fragment)) { |
| 390 | JOT(12, "wakeup call on wq_" \ |
| 391 | "audio, %i=frag reading %i" \ |
| 392 | "=fragment fill\n", \ |
| 393 | (peasycap->audio_read / \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 394 | peasycap->\ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 395 | audio_pages_per_fragment), \ |
| 396 | (peasycap->audio_fill / \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 397 | peasycap->\ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 398 | audio_pages_per_fragment)); |
| 399 | wake_up_interruptible\ |
| 400 | (&(peasycap->wq_audio)); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | much = PAGE_SIZE - (int)(paudio_buffer->pto -\ |
| 405 | paudio_buffer->pgo); |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 406 | |
| 407 | if (false == peasycap->microphone) { |
| 408 | if (much > more) |
| 409 | much = more; |
| 410 | |
| 411 | memcpy(paudio_buffer->pto, p1, much); |
| 412 | p1 += much; |
| 413 | more -= much; |
| 414 | } else { |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 415 | #if defined(UPSAMPLE) |
| 416 | if (much % 16) |
| 417 | JOT(8, "MISTAKE? much" \ |
| 418 | " is not divisible by 16\n"); |
| 419 | if (much > (16 * \ |
| 420 | more)) |
| 421 | much = 16 * \ |
| 422 | more; |
| 423 | p2 = (__u8 *)paudio_buffer->pto; |
| 424 | |
| 425 | for (j = 0; j < (much/16); j++) { |
| 426 | newaudio = ((int) *p1) - 128; |
| 427 | newaudio = 128 * \ |
| 428 | newaudio; |
| 429 | |
| 430 | delta = (newaudio - oldaudio) \ |
| 431 | / 4; |
| 432 | s16 = oldaudio + delta; |
| 433 | |
| 434 | for (k = 0; k < 4; k++) { |
| 435 | *p2 = (0x00FF & s16); |
| 436 | *(p2 + 1) = (0xFF00 & \ |
| 437 | s16) >> 8; |
| 438 | p2 += 2; |
| 439 | *p2 = (0x00FF & s16); |
| 440 | *(p2 + 1) = (0xFF00 & \ |
| 441 | s16) >> 8; |
| 442 | p2 += 2; |
| 443 | |
| 444 | s16 += delta; |
| 445 | } |
| 446 | p1++; |
| 447 | more--; |
| 448 | oldaudio = s16; |
| 449 | } |
| 450 | #else |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 451 | if (much > (2 * more)) |
| 452 | much = 2 * more; |
| 453 | p2 = (__u8 *)paudio_buffer->pto; |
| 454 | |
| 455 | for (j = 0; j < (much / 2); j++) { |
| 456 | s16 = ((int) *p1) - 128; |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 457 | s16 = 128 * \ |
| 458 | s16; |
| 459 | *p2 = (0x00FF & s16); |
| 460 | *(p2 + 1) = (0xFF00 & s16) >> \ |
| 461 | 8; |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 462 | p1++; p2 += 2; |
| 463 | more--; |
| 464 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 465 | #endif /*UPSAMPLE*/ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 466 | } |
| 467 | (paudio_buffer->pto) += much; |
| 468 | } |
| 469 | } |
| 470 | } else { |
| 471 | JOT(12, "discarding audio samples because " \ |
| 472 | "%i=purb->iso_frame_desc[i].status\n", \ |
| 473 | purb->iso_frame_desc[i].status); |
| 474 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 475 | |
| 476 | #if defined(UPSAMPLE) |
| 477 | peasycap->oldaudio = oldaudio; |
| 478 | #endif /*UPSAMPLE*/ |
| 479 | |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 480 | } |
| 481 | /*---------------------------------------------------------------------------*/ |
| 482 | /* |
| 483 | * RESUBMIT THIS URB AFTER NO ERROR |
| 484 | */ |
| 485 | /*---------------------------------------------------------------------------*/ |
| 486 | if (peasycap->audio_isoc_streaming) { |
| 487 | rc = usb_submit_urb(purb, GFP_ATOMIC); |
| 488 | if (0 != rc) { |
| 489 | SAY("ERROR: while %i=audio_idle, usb_submit_urb() failed " \ |
| 490 | "with rc:\n", peasycap->audio_idle); |
| 491 | switch (rc) { |
| 492 | case -ENOMEM: { |
| 493 | SAY("ENOMEM\n"); break; |
| 494 | } |
| 495 | case -ENODEV: { |
| 496 | SAY("ENODEV\n"); break; |
| 497 | } |
| 498 | case -ENXIO: { |
| 499 | SAY("ENXIO\n"); break; |
| 500 | } |
| 501 | case -EINVAL: { |
| 502 | SAY("EINVAL\n"); break; |
| 503 | } |
| 504 | case -EAGAIN: { |
| 505 | SAY("EAGAIN\n"); break; |
| 506 | } |
| 507 | case -EFBIG: { |
| 508 | SAY("EFBIG\n"); break; |
| 509 | } |
| 510 | case -EPIPE: { |
| 511 | SAY("EPIPE\n"); break; |
| 512 | } |
| 513 | case -EMSGSIZE: { |
| 514 | SAY("EMSGSIZE\n"); break; |
| 515 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 516 | case -ENOSPC: { |
| 517 | SAY("ENOSPC\n"); break; |
| 518 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 519 | default: { |
| 520 | SAY("0x%08X\n", rc); break; |
| 521 | } |
| 522 | } |
| 523 | } |
| 524 | } |
| 525 | return; |
| 526 | } |
| 527 | /*****************************************************************************/ |
| 528 | /*---------------------------------------------------------------------------*/ |
| 529 | /* |
| 530 | * THE AUDIO URBS ARE SUBMITTED AT THIS EARLY STAGE SO THAT IT IS POSSIBLE TO |
| 531 | * STREAM FROM /dev/easysnd1 WITH SIMPLE PROGRAMS SUCH AS cat WHICH DO NOT |
| 532 | * HAVE AN IOCTL INTERFACE. THE VIDEO URBS, BY CONTRAST, MUST BE SUBMITTED |
| 533 | * MUCH LATER: SEE COMMENTS IN FILE easycap_main.c. |
| 534 | */ |
| 535 | /*---------------------------------------------------------------------------*/ |
| 536 | int |
| 537 | easysnd_open(struct inode *inode, struct file *file) |
| 538 | { |
| 539 | struct usb_interface *pusb_interface; |
| 540 | struct easycap *peasycap; |
| 541 | int subminor, rc; |
| 542 | |
| 543 | JOT(4, "begins.\n"); |
| 544 | |
| 545 | subminor = iminor(inode); |
| 546 | |
| 547 | pusb_interface = usb_find_interface(&easycap_usb_driver, subminor); |
| 548 | if (NULL == pusb_interface) { |
| 549 | SAY("ERROR: pusb_interface is NULL\n"); |
| 550 | SAY("ending unsuccessfully\n"); |
| 551 | return -1; |
| 552 | } |
| 553 | peasycap = usb_get_intfdata(pusb_interface); |
| 554 | if (NULL == peasycap) { |
| 555 | SAY("ERROR: peasycap is NULL\n"); |
| 556 | SAY("ending unsuccessfully\n"); |
| 557 | return -1; |
| 558 | } |
| 559 | |
| 560 | file->private_data = peasycap; |
| 561 | |
| 562 | /*---------------------------------------------------------------------------*/ |
| 563 | /* |
| 564 | * INITIALIZATION. |
| 565 | */ |
| 566 | /*---------------------------------------------------------------------------*/ |
| 567 | JOT(4, "starting initialization\n"); |
| 568 | |
| 569 | if ((struct usb_device *)NULL == peasycap->pusb_device) { |
| 570 | SAY("ERROR: peasycap->pusb_device is NULL\n"); |
| 571 | return -EFAULT; |
| 572 | } else { |
| 573 | JOT(16, "0x%08lX=peasycap->pusb_device\n", \ |
| 574 | (long int)peasycap->pusb_device); |
| 575 | } |
| 576 | |
| 577 | rc = audio_setup(peasycap); |
| 578 | if (0 <= rc) |
| 579 | JOT(8, "audio_setup() returned %i\n", rc); |
| 580 | else |
| 581 | JOT(8, "easysnd open(): ERROR: audio_setup() returned %i\n", rc); |
| 582 | |
| 583 | if ((struct usb_device *)NULL == peasycap->pusb_device) { |
| 584 | SAY("ERROR: peasycap->pusb_device has become NULL\n"); |
| 585 | return -EFAULT; |
| 586 | } |
| 587 | rc = adjust_volume(peasycap, -8192); |
| 588 | if (0 != rc) { |
| 589 | SAY("ERROR: adjust_volume(default) returned %i\n", rc); |
| 590 | return -EFAULT; |
| 591 | } |
| 592 | /*---------------------------------------------------------------------------*/ |
| 593 | if ((struct usb_device *)NULL == peasycap->pusb_device) { |
| 594 | SAY("ERROR: peasycap->pusb_device has become NULL\n"); |
| 595 | return -EFAULT; |
| 596 | } |
| 597 | rc = usb_set_interface(peasycap->pusb_device, peasycap->audio_interface, \ |
| 598 | peasycap->audio_altsetting_on); |
| 599 | JOT(8, "usb_set_interface(.,%i,%i) returned %i\n", peasycap->audio_interface, \ |
| 600 | peasycap->audio_altsetting_on, rc); |
| 601 | |
| 602 | if ((struct usb_device *)NULL == peasycap->pusb_device) { |
| 603 | SAY("ERROR: peasycap->pusb_device has become NULL\n"); |
| 604 | return -EFAULT; |
| 605 | } |
| 606 | rc = wakeup_device(peasycap->pusb_device); |
| 607 | if (0 == rc) |
| 608 | JOT(8, "wakeup_device() returned %i\n", rc); |
| 609 | else |
| 610 | JOT(8, "easysnd open(): ERROR: wakeup_device() returned %i\n", rc); |
| 611 | |
| 612 | if ((struct usb_device *)NULL == peasycap->pusb_device) { |
| 613 | SAY("ERROR: peasycap->pusb_device has become NULL\n"); |
| 614 | return -EFAULT; |
| 615 | } |
| 616 | submit_audio_urbs(peasycap); |
| 617 | peasycap->audio_idle = 0; |
| 618 | |
| 619 | peasycap->timeval1.tv_sec = 0; |
| 620 | peasycap->timeval1.tv_usec = 0; |
| 621 | |
| 622 | JOT(4, "finished initialization\n"); |
| 623 | return 0; |
| 624 | } |
| 625 | /*****************************************************************************/ |
| 626 | int |
| 627 | easysnd_release(struct inode *inode, struct file *file) |
| 628 | { |
| 629 | struct easycap *peasycap; |
| 630 | |
| 631 | JOT(4, "begins\n"); |
| 632 | |
Joe Perches | ba952d8 | 2010-07-12 13:50:10 -0700 | [diff] [blame] | 633 | peasycap = file->private_data; |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 634 | if (NULL == peasycap) { |
| 635 | SAY("ERROR: peasycap is NULL.\n"); |
| 636 | return -EFAULT; |
| 637 | } |
| 638 | if (0 != kill_audio_urbs(peasycap)) { |
| 639 | SAY("ERROR: kill_audio_urbs() failed\n"); |
| 640 | return -EFAULT; |
| 641 | } |
| 642 | JOT(4, "ending successfully\n"); |
| 643 | return 0; |
| 644 | } |
| 645 | /*****************************************************************************/ |
| 646 | ssize_t |
| 647 | easysnd_read(struct file *file, char __user *puserspacebuffer, \ |
| 648 | size_t kount, loff_t *poff) |
| 649 | { |
| 650 | struct timeval timeval; |
| 651 | static struct timeval timeval1; |
| 652 | static long long int audio_bytes, above, below, mean; |
| 653 | struct signed_div_result sdr; |
| 654 | unsigned char *p0; |
| 655 | long int kount1, more, rc, l0, lm; |
| 656 | int fragment; |
| 657 | struct easycap *peasycap; |
| 658 | struct data_buffer *pdata_buffer; |
| 659 | size_t szret; |
| 660 | |
| 661 | /*---------------------------------------------------------------------------*/ |
| 662 | /* |
| 663 | * DO A BLOCKING READ TO TRANSFER DATA TO USER SPACE. |
| 664 | * |
| 665 | ****************************************************************************** |
| 666 | ***** N.B. IF THIS FUNCTION RETURNS 0, NOTHING IS SEEN IN USER SPACE. ****** |
| 667 | ***** THIS CONDITION SIGNIFIES END-OF-FILE. ****** |
| 668 | ****************************************************************************** |
| 669 | */ |
| 670 | /*---------------------------------------------------------------------------*/ |
| 671 | |
| 672 | JOT(8, "===== easysnd_read(): kount=%i, *poff=%i\n", (int)kount, (int)(*poff)); |
| 673 | |
| 674 | peasycap = (struct easycap *)(file->private_data); |
| 675 | if (NULL == peasycap) { |
| 676 | SAY("ERROR in easysnd_read(): peasycap is NULL\n"); |
| 677 | return -EFAULT; |
| 678 | } |
| 679 | /*---------------------------------------------------------------------------*/ |
| 680 | if ((0 > peasycap->audio_read) || \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 681 | (peasycap->audio_buffer_page_many <= peasycap->audio_read)) { |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 682 | SAY("ERROR: peasycap->audio_read out of range\n"); |
| 683 | return -EFAULT; |
| 684 | } |
| 685 | pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read]; |
| 686 | if ((struct data_buffer *)NULL == pdata_buffer) { |
| 687 | SAY("ERROR: pdata_buffer is NULL\n"); |
| 688 | return -EFAULT; |
| 689 | } |
| 690 | JOT(12, "before wait, %i=frag read %i=frag fill\n", \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 691 | (peasycap->audio_read / peasycap->audio_pages_per_fragment), \ |
| 692 | (peasycap->audio_fill / peasycap->audio_pages_per_fragment)); |
| 693 | fragment = (peasycap->audio_read / peasycap->audio_pages_per_fragment); |
| 694 | while ((fragment == (peasycap->audio_fill / \ |
| 695 | peasycap->audio_pages_per_fragment)) || \ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 696 | (0 == (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))) { |
| 697 | if (file->f_flags & O_NONBLOCK) { |
| 698 | JOT(16, "returning -EAGAIN as instructed\n"); |
| 699 | return -EAGAIN; |
| 700 | } |
| 701 | rc = wait_event_interruptible(peasycap->wq_audio, \ |
| 702 | (peasycap->audio_idle || peasycap->audio_eof || \ |
| 703 | ((fragment != (peasycap->audio_fill / \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 704 | peasycap->audio_pages_per_fragment)) && \ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 705 | (0 < (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))))); |
| 706 | if (0 != rc) { |
| 707 | SAY("aborted by signal\n"); |
| 708 | return -ERESTARTSYS; |
| 709 | } |
| 710 | if (peasycap->audio_eof) { |
| 711 | JOT(8, "returning 0 because %i=audio_eof\n", \ |
| 712 | peasycap->audio_eof); |
| 713 | kill_audio_urbs(peasycap); |
| 714 | msleep(500); |
| 715 | return 0; |
| 716 | } |
| 717 | if (peasycap->audio_idle) { |
| 718 | JOT(16, "returning 0 because %i=audio_idle\n", \ |
| 719 | peasycap->audio_idle); |
| 720 | return 0; |
| 721 | } |
| 722 | if (!peasycap->audio_isoc_streaming) { |
| 723 | JOT(16, "returning 0 because audio urbs not streaming\n"); |
| 724 | return 0; |
| 725 | } |
| 726 | } |
| 727 | JOT(12, "after wait, %i=frag read %i=frag fill\n", \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 728 | (peasycap->audio_read / peasycap->audio_pages_per_fragment), \ |
| 729 | (peasycap->audio_fill / peasycap->audio_pages_per_fragment)); |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 730 | szret = (size_t)0; |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 731 | while (fragment == (peasycap->audio_read / \ |
| 732 | peasycap->audio_pages_per_fragment)) { |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 733 | if (NULL == pdata_buffer->pgo) { |
| 734 | SAY("ERROR: pdata_buffer->pgo is NULL\n"); |
| 735 | return -EFAULT; |
| 736 | } |
| 737 | if (NULL == pdata_buffer->pto) { |
| 738 | SAY("ERROR: pdata_buffer->pto is NULL\n"); |
| 739 | return -EFAULT; |
| 740 | } |
| 741 | kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo); |
| 742 | if (0 > kount1) { |
| 743 | SAY("easysnd_read: MISTAKE: kount1 is negative\n"); |
| 744 | return -ERESTARTSYS; |
| 745 | } |
| 746 | if (!kount1) { |
| 747 | (peasycap->audio_read)++; |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 748 | if (peasycap->audio_buffer_page_many <= peasycap->audio_read) |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 749 | peasycap->audio_read = 0; |
| 750 | JOT(12, "bumped peasycap->audio_read to %i\n", \ |
| 751 | peasycap->audio_read); |
| 752 | |
| 753 | if (fragment != (peasycap->audio_read / \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 754 | peasycap->audio_pages_per_fragment)) |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 755 | break; |
| 756 | |
| 757 | if ((0 > peasycap->audio_read) || \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 758 | (peasycap->audio_buffer_page_many <= \ |
| 759 | peasycap->audio_read)) { |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 760 | SAY("ERROR: peasycap->audio_read out of range\n"); |
| 761 | return -EFAULT; |
| 762 | } |
| 763 | pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read]; |
| 764 | if ((struct data_buffer *)NULL == pdata_buffer) { |
| 765 | SAY("ERROR: pdata_buffer is NULL\n"); |
| 766 | return -EFAULT; |
| 767 | } |
| 768 | if (NULL == pdata_buffer->pgo) { |
| 769 | SAY("ERROR: pdata_buffer->pgo is NULL\n"); |
| 770 | return -EFAULT; |
| 771 | } |
| 772 | if (NULL == pdata_buffer->pto) { |
| 773 | SAY("ERROR: pdata_buffer->pto is NULL\n"); |
| 774 | return -EFAULT; |
| 775 | } |
| 776 | kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo); |
| 777 | } |
| 778 | JOT(12, "ready to send %li bytes\n", (long int) kount1); |
| 779 | JOT(12, "still to send %li bytes\n", (long int) kount); |
| 780 | more = kount1; |
| 781 | if (more > kount) |
| 782 | more = kount; |
| 783 | JOT(12, "agreed to send %li bytes from page %i\n", \ |
| 784 | more, peasycap->audio_read); |
| 785 | if (!more) |
| 786 | break; |
| 787 | |
| 788 | /*---------------------------------------------------------------------------*/ |
| 789 | /* |
| 790 | * ACCUMULATE DYNAMIC-RANGE INFORMATION |
| 791 | */ |
| 792 | /*---------------------------------------------------------------------------*/ |
| 793 | p0 = (unsigned char *)pdata_buffer->pgo; l0 = 0; lm = more/2; |
| 794 | while (l0 < lm) { |
| 795 | SUMMER(p0, &peasycap->audio_sample, &peasycap->audio_niveau, \ |
| 796 | &peasycap->audio_square); l0++; p0 += 2; |
| 797 | } |
| 798 | /*---------------------------------------------------------------------------*/ |
| 799 | rc = copy_to_user(puserspacebuffer, pdata_buffer->pto, more); |
| 800 | if (0 != rc) { |
| 801 | SAY("ERROR: copy_to_user() returned %li\n", rc); |
| 802 | return -EFAULT; |
| 803 | } |
| 804 | *poff += (loff_t)more; |
| 805 | szret += (size_t)more; |
| 806 | pdata_buffer->pto += more; |
| 807 | puserspacebuffer += more; |
| 808 | kount -= (size_t)more; |
| 809 | } |
| 810 | JOT(12, "after read, %i=frag read %i=frag fill\n", \ |
Mike Thomas | 3d423e9 | 2010-07-11 10:51:13 +0100 | [diff] [blame] | 811 | (peasycap->audio_read / peasycap->audio_pages_per_fragment), \ |
| 812 | (peasycap->audio_fill / peasycap->audio_pages_per_fragment)); |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 813 | if (kount < 0) { |
| 814 | SAY("MISTAKE: %li=kount %li=szret\n", \ |
| 815 | (long int)kount, (long int)szret); |
| 816 | } |
| 817 | /*---------------------------------------------------------------------------*/ |
| 818 | /* |
| 819 | * CALCULATE DYNAMIC RANGE FOR (VAPOURWARE) AUTOMATIC VOLUME CONTROL |
| 820 | */ |
| 821 | /*---------------------------------------------------------------------------*/ |
| 822 | if (peasycap->audio_sample) { |
| 823 | below = peasycap->audio_sample; |
| 824 | above = peasycap->audio_square; |
| 825 | sdr = signed_div(above, below); |
| 826 | above = sdr.quotient; |
| 827 | mean = peasycap->audio_niveau; |
| 828 | sdr = signed_div(mean, peasycap->audio_sample); |
| 829 | |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 830 | JOT(8, "%8lli=mean %8lli=meansquare after %lli samples, =>\n", \ |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 831 | sdr.quotient, above, peasycap->audio_sample); |
| 832 | |
| 833 | sdr = signed_div(above, 32768); |
| 834 | JOT(8, "audio dynamic range is roughly %lli\n", sdr.quotient); |
| 835 | } |
| 836 | /*---------------------------------------------------------------------------*/ |
| 837 | /* |
| 838 | * UPDATE THE AUDIO CLOCK |
| 839 | */ |
| 840 | /*---------------------------------------------------------------------------*/ |
| 841 | do_gettimeofday(&timeval); |
| 842 | if (!peasycap->timeval1.tv_sec) { |
| 843 | audio_bytes = 0; |
| 844 | timeval1 = timeval; |
| 845 | |
| 846 | if (mutex_lock_interruptible(&(peasycap->mutex_timeval1))) |
| 847 | return -ERESTARTSYS; |
| 848 | peasycap->timeval1 = timeval1; |
| 849 | mutex_unlock(&(peasycap->mutex_timeval1)); |
| 850 | sdr.quotient = 192000; |
| 851 | } else { |
| 852 | audio_bytes += (long long int) szret; |
| 853 | below = ((long long int)(1000000)) * \ |
| 854 | ((long long int)(timeval.tv_sec - timeval1.tv_sec)) + \ |
| 855 | (long long int)(timeval.tv_usec - timeval1.tv_usec); |
| 856 | above = 1000000 * ((long long int) audio_bytes); |
| 857 | |
| 858 | if (below) |
| 859 | sdr = signed_div(above, below); |
| 860 | else |
| 861 | sdr.quotient = 192000; |
| 862 | } |
| 863 | JOT(8, "audio streaming at %lli bytes/second\n", sdr.quotient); |
| 864 | if (mutex_lock_interruptible(&(peasycap->mutex_timeval1))) |
| 865 | return -ERESTARTSYS; |
| 866 | peasycap->dnbydt = sdr.quotient; |
| 867 | mutex_unlock(&(peasycap->mutex_timeval1)); |
| 868 | |
| 869 | JOT(8, "returning %li\n", (long int)szret); |
| 870 | return szret; |
| 871 | } |
| 872 | /*****************************************************************************/ |
| 873 | /*---------------------------------------------------------------------------*/ |
| 874 | /* |
| 875 | * SUBMIT ALL AUDIO URBS. |
| 876 | */ |
| 877 | /*---------------------------------------------------------------------------*/ |
| 878 | int |
| 879 | submit_audio_urbs(struct easycap *peasycap) |
| 880 | { |
| 881 | struct data_urb *pdata_urb; |
| 882 | struct urb *purb; |
| 883 | struct list_head *plist_head; |
| 884 | int j, isbad, m, rc; |
| 885 | int isbuf; |
| 886 | |
| 887 | if ((struct list_head *)NULL == peasycap->purb_audio_head) { |
| 888 | SAY("ERROR: peasycap->urb_audio_head uninitialized\n"); |
| 889 | return -EFAULT; |
| 890 | } |
| 891 | if ((struct usb_device *)NULL == peasycap->pusb_device) { |
| 892 | SAY("ERROR: peasycap->pusb_device is NULL\n"); |
| 893 | return -EFAULT; |
| 894 | } |
| 895 | if (!peasycap->audio_isoc_streaming) { |
| 896 | JOT(4, "initial submission of all audio urbs\n"); |
| 897 | rc = usb_set_interface(peasycap->pusb_device, |
| 898 | peasycap->audio_interface, \ |
| 899 | peasycap->audio_altsetting_on); |
| 900 | JOT(8, "usb_set_interface(.,%i,%i) returned %i\n", \ |
| 901 | peasycap->audio_interface, \ |
| 902 | peasycap->audio_altsetting_on, rc); |
| 903 | |
| 904 | isbad = 0; m = 0; |
| 905 | list_for_each(plist_head, (peasycap->purb_audio_head)) { |
| 906 | pdata_urb = list_entry(plist_head, struct data_urb, list_head); |
| 907 | if (NULL != pdata_urb) { |
| 908 | purb = pdata_urb->purb; |
| 909 | if (NULL != purb) { |
| 910 | isbuf = pdata_urb->isbuf; |
| 911 | |
| 912 | purb->interval = 1; |
| 913 | purb->dev = peasycap->pusb_device; |
| 914 | purb->pipe = \ |
| 915 | usb_rcvisocpipe(peasycap->pusb_device,\ |
| 916 | peasycap->audio_endpointnumber); |
| 917 | purb->transfer_flags = URB_ISO_ASAP; |
| 918 | purb->transfer_buffer = \ |
| 919 | peasycap->audio_isoc_buffer[isbuf].pgo; |
| 920 | purb->transfer_buffer_length = \ |
| 921 | peasycap->audio_isoc_buffer_size; |
| 922 | purb->complete = easysnd_complete; |
| 923 | purb->context = peasycap; |
| 924 | purb->start_frame = 0; |
| 925 | purb->number_of_packets = \ |
| 926 | peasycap->audio_isoc_framesperdesc; |
| 927 | for (j = 0; j < peasycap->\ |
| 928 | audio_isoc_framesperdesc; \ |
| 929 | j++) { |
| 930 | purb->iso_frame_desc[j].offset = j * \ |
| 931 | peasycap->\ |
| 932 | audio_isoc_maxframesize; |
| 933 | purb->iso_frame_desc[j].length = \ |
| 934 | peasycap->\ |
| 935 | audio_isoc_maxframesize; |
| 936 | } |
| 937 | |
| 938 | rc = usb_submit_urb(purb, GFP_KERNEL); |
| 939 | if (0 != rc) { |
| 940 | isbad++; |
| 941 | SAY("ERROR: usb_submit_urb() failed" \ |
| 942 | " for urb with rc:\n"); |
| 943 | switch (rc) { |
| 944 | case -ENOMEM: { |
| 945 | SAY("ENOMEM\n"); break; |
| 946 | } |
| 947 | case -ENODEV: { |
| 948 | SAY("ENODEV\n"); break; |
| 949 | } |
| 950 | case -ENXIO: { |
| 951 | SAY("ENXIO\n"); break; |
| 952 | } |
| 953 | case -EINVAL: { |
| 954 | SAY("EINVAL\n"); break; |
| 955 | } |
| 956 | case -EAGAIN: { |
| 957 | SAY("EAGAIN\n"); break; |
| 958 | } |
| 959 | case -EFBIG: { |
| 960 | SAY("EFBIG\n"); break; |
| 961 | } |
| 962 | case -EPIPE: { |
| 963 | SAY("EPIPE\n"); break; |
| 964 | } |
| 965 | case -EMSGSIZE: { |
| 966 | SAY("EMSGSIZE\n"); break; |
| 967 | } |
Mike Thomas | 7ebc876 | 2010-07-11 10:54:51 +0100 | [diff] [blame] | 968 | case -ENOSPC: { |
| 969 | SAY("ENOSPC\n"); break; |
| 970 | } |
R.M. Thomas | 702422b | 2010-06-18 12:29:49 -0700 | [diff] [blame] | 971 | default: { |
| 972 | SAY("unknown error code %i\n",\ |
| 973 | rc); break; |
| 974 | } |
| 975 | } |
| 976 | } else { |
| 977 | m++; |
| 978 | } |
| 979 | } else { |
| 980 | isbad++; |
| 981 | } |
| 982 | } else { |
| 983 | isbad++; |
| 984 | } |
| 985 | } |
| 986 | if (isbad) { |
| 987 | JOT(4, "attempting cleanup instead of submitting\n"); |
| 988 | list_for_each(plist_head, (peasycap->purb_audio_head)) { |
| 989 | pdata_urb = list_entry(plist_head, struct data_urb, \ |
| 990 | list_head); |
| 991 | if (NULL != pdata_urb) { |
| 992 | purb = pdata_urb->purb; |
| 993 | if (NULL != purb) |
| 994 | usb_kill_urb(purb); |
| 995 | } |
| 996 | } |
| 997 | peasycap->audio_isoc_streaming = 0; |
| 998 | } else { |
| 999 | peasycap->audio_isoc_streaming = 1; |
| 1000 | JOT(4, "submitted %i audio urbs\n", m); |
| 1001 | } |
| 1002 | } else |
| 1003 | JOT(4, "already streaming audio urbs\n"); |
| 1004 | |
| 1005 | return 0; |
| 1006 | } |
| 1007 | /*****************************************************************************/ |
| 1008 | /*---------------------------------------------------------------------------*/ |
| 1009 | /* |
| 1010 | * KILL ALL AUDIO URBS. |
| 1011 | */ |
| 1012 | /*---------------------------------------------------------------------------*/ |
| 1013 | int |
| 1014 | kill_audio_urbs(struct easycap *peasycap) |
| 1015 | { |
| 1016 | int m; |
| 1017 | struct list_head *plist_head; |
| 1018 | struct data_urb *pdata_urb; |
| 1019 | |
| 1020 | if (peasycap->audio_isoc_streaming) { |
| 1021 | if ((struct list_head *)NULL != peasycap->purb_audio_head) { |
| 1022 | peasycap->audio_isoc_streaming = 0; |
| 1023 | JOT(4, "killing audio urbs\n"); |
| 1024 | m = 0; |
| 1025 | list_for_each(plist_head, (peasycap->purb_audio_head)) { |
| 1026 | pdata_urb = list_entry(plist_head, struct data_urb, |
| 1027 | list_head); |
| 1028 | if ((struct data_urb *)NULL != pdata_urb) { |
| 1029 | if ((struct urb *)NULL != pdata_urb->purb) { |
| 1030 | usb_kill_urb(pdata_urb->purb); |
| 1031 | m++; |
| 1032 | } |
| 1033 | } |
| 1034 | } |
| 1035 | JOT(4, "%i audio urbs killed\n", m); |
| 1036 | } else { |
| 1037 | SAY("ERROR: peasycap->purb_audio_head is NULL\n"); |
| 1038 | return -EFAULT; |
| 1039 | } |
| 1040 | } else { |
| 1041 | JOT(8, "%i=audio_isoc_streaming, no audio urbs killed\n", \ |
| 1042 | peasycap->audio_isoc_streaming); |
| 1043 | } |
| 1044 | return 0; |
| 1045 | } |
| 1046 | /*****************************************************************************/ |