| 1 | |
| 2 | /* |
| 3 | * Copyright (c) 1998-2001 by The XFree86 Project, Inc. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 21 | * OTHER DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | * Except as contained in this notice, the name of the copyright holder(s) |
| 24 | * and author(s) shall not be used in advertising or otherwise to promote |
| 25 | * the sale, use or other dealings in this Software without prior written |
| 26 | * authorization from the copyright holder(s) and author(s). |
| 27 | */ |
| 28 | |
| 29 | #ifdef HAVE_XORG_CONFIG_H |
| 30 | #include <xorg-config.h> |
| 31 | #endif |
| 32 | |
| 33 | #include "misc.h" |
| 34 | #include "xf86.h" |
| 35 | |
| 36 | #include <X11/X.h> |
| 37 | #include "scrnintstr.h" |
| 38 | #include "regionstr.h" |
| 39 | #include "xf86fbman.h" |
| 40 | |
| 41 | /* |
| 42 | #define DEBUG |
| 43 | */ |
| 44 | |
| 45 | static DevPrivateKeyRec xf86FBManagerKeyRec; |
| 46 | static DevPrivateKey xf86FBManagerKey; |
| 47 | |
| 48 | Bool |
| 49 | xf86RegisterOffscreenManager(ScreenPtr pScreen, FBManagerFuncsPtr funcs) |
| 50 | { |
| 51 | |
| 52 | xf86FBManagerKey = &xf86FBManagerKeyRec; |
| 53 | |
| 54 | if (!dixRegisterPrivateKey(&xf86FBManagerKeyRec, PRIVATE_SCREEN, 0)) |
| 55 | return FALSE; |
| 56 | |
| 57 | dixSetPrivate(&pScreen->devPrivates, xf86FBManagerKey, funcs); |
| 58 | |
| 59 | return TRUE; |
| 60 | } |
| 61 | |
| 62 | Bool |
| 63 | xf86FBManagerRunning(ScreenPtr pScreen) |
| 64 | { |
| 65 | if (xf86FBManagerKey == NULL) |
| 66 | return FALSE; |
| 67 | |
| 68 | if (!dixLookupPrivate(&pScreen->devPrivates, xf86FBManagerKey)) |
| 69 | return FALSE; |
| 70 | |
| 71 | return TRUE; |
| 72 | } |
| 73 | |
| 74 | Bool |
| 75 | xf86RegisterFreeBoxCallback(ScreenPtr pScreen, |
| 76 | FreeBoxCallbackProcPtr FreeBoxCallback, |
| 77 | pointer devPriv) |
| 78 | { |
| 79 | FBManagerFuncsPtr funcs; |
| 80 | |
| 81 | if (xf86FBManagerKey == NULL) |
| 82 | return FALSE; |
| 83 | if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 84 | xf86FBManagerKey))) |
| 85 | return FALSE; |
| 86 | |
| 87 | return (*funcs->RegisterFreeBoxCallback) (pScreen, FreeBoxCallback, |
| 88 | devPriv); |
| 89 | } |
| 90 | |
| 91 | FBAreaPtr |
| 92 | xf86AllocateOffscreenArea(ScreenPtr pScreen, |
| 93 | int w, int h, |
| 94 | int gran, |
| 95 | MoveAreaCallbackProcPtr moveCB, |
| 96 | RemoveAreaCallbackProcPtr removeCB, pointer privData) |
| 97 | { |
| 98 | FBManagerFuncsPtr funcs; |
| 99 | |
| 100 | if (xf86FBManagerKey == NULL) |
| 101 | return NULL; |
| 102 | if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 103 | xf86FBManagerKey))) |
| 104 | return NULL; |
| 105 | |
| 106 | return (*funcs->AllocateOffscreenArea) (pScreen, w, h, gran, moveCB, |
| 107 | removeCB, privData); |
| 108 | } |
| 109 | |
| 110 | FBLinearPtr |
| 111 | xf86AllocateOffscreenLinear(ScreenPtr pScreen, |
| 112 | int length, |
| 113 | int gran, |
| 114 | MoveLinearCallbackProcPtr moveCB, |
| 115 | RemoveLinearCallbackProcPtr removeCB, |
| 116 | pointer privData) |
| 117 | { |
| 118 | FBManagerFuncsPtr funcs; |
| 119 | |
| 120 | if (xf86FBManagerKey == NULL) |
| 121 | return NULL; |
| 122 | if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 123 | xf86FBManagerKey))) |
| 124 | return NULL; |
| 125 | |
| 126 | return (*funcs->AllocateOffscreenLinear) (pScreen, length, gran, moveCB, |
| 127 | removeCB, privData); |
| 128 | } |
| 129 | |
| 130 | void |
| 131 | xf86FreeOffscreenArea(FBAreaPtr area) |
| 132 | { |
| 133 | FBManagerFuncsPtr funcs; |
| 134 | |
| 135 | if (!area) |
| 136 | return; |
| 137 | |
| 138 | if (xf86FBManagerKey == NULL) |
| 139 | return; |
| 140 | if (! |
| 141 | (funcs = |
| 142 | (FBManagerFuncsPtr) dixLookupPrivate(&area->pScreen->devPrivates, |
| 143 | xf86FBManagerKey))) |
| 144 | return; |
| 145 | |
| 146 | (*funcs->FreeOffscreenArea) (area); |
| 147 | |
| 148 | return; |
| 149 | } |
| 150 | |
| 151 | void |
| 152 | xf86FreeOffscreenLinear(FBLinearPtr linear) |
| 153 | { |
| 154 | FBManagerFuncsPtr funcs; |
| 155 | |
| 156 | if (!linear) |
| 157 | return; |
| 158 | |
| 159 | if (xf86FBManagerKey == NULL) |
| 160 | return; |
| 161 | if (! |
| 162 | (funcs = |
| 163 | (FBManagerFuncsPtr) dixLookupPrivate(&linear->pScreen->devPrivates, |
| 164 | xf86FBManagerKey))) |
| 165 | return; |
| 166 | |
| 167 | (*funcs->FreeOffscreenLinear) (linear); |
| 168 | |
| 169 | return; |
| 170 | } |
| 171 | |
| 172 | Bool |
| 173 | xf86ResizeOffscreenArea(FBAreaPtr resize, int w, int h) |
| 174 | { |
| 175 | FBManagerFuncsPtr funcs; |
| 176 | |
| 177 | if (!resize) |
| 178 | return FALSE; |
| 179 | |
| 180 | if (xf86FBManagerKey == NULL) |
| 181 | return FALSE; |
| 182 | if (! |
| 183 | (funcs = |
| 184 | (FBManagerFuncsPtr) dixLookupPrivate(&resize->pScreen->devPrivates, |
| 185 | xf86FBManagerKey))) |
| 186 | return FALSE; |
| 187 | |
| 188 | return (*funcs->ResizeOffscreenArea) (resize, w, h); |
| 189 | } |
| 190 | |
| 191 | Bool |
| 192 | xf86ResizeOffscreenLinear(FBLinearPtr resize, int size) |
| 193 | { |
| 194 | FBManagerFuncsPtr funcs; |
| 195 | |
| 196 | if (!resize) |
| 197 | return FALSE; |
| 198 | |
| 199 | if (xf86FBManagerKey == NULL) |
| 200 | return FALSE; |
| 201 | if (! |
| 202 | (funcs = |
| 203 | (FBManagerFuncsPtr) dixLookupPrivate(&resize->pScreen->devPrivates, |
| 204 | xf86FBManagerKey))) |
| 205 | return FALSE; |
| 206 | |
| 207 | return (*funcs->ResizeOffscreenLinear) (resize, size); |
| 208 | } |
| 209 | |
| 210 | Bool |
| 211 | xf86QueryLargestOffscreenArea(ScreenPtr pScreen, |
| 212 | int *w, int *h, |
| 213 | int gran, int preferences, int severity) |
| 214 | { |
| 215 | FBManagerFuncsPtr funcs; |
| 216 | |
| 217 | *w = 0; |
| 218 | *h = 0; |
| 219 | |
| 220 | if (xf86FBManagerKey == NULL) |
| 221 | return FALSE; |
| 222 | if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 223 | xf86FBManagerKey))) |
| 224 | return FALSE; |
| 225 | |
| 226 | return (*funcs->QueryLargestOffscreenArea) (pScreen, w, h, gran, |
| 227 | preferences, severity); |
| 228 | } |
| 229 | |
| 230 | Bool |
| 231 | xf86QueryLargestOffscreenLinear(ScreenPtr pScreen, |
| 232 | int *size, int gran, int severity) |
| 233 | { |
| 234 | FBManagerFuncsPtr funcs; |
| 235 | |
| 236 | *size = 0; |
| 237 | |
| 238 | if (xf86FBManagerKey == NULL) |
| 239 | return FALSE; |
| 240 | if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 241 | xf86FBManagerKey))) |
| 242 | return FALSE; |
| 243 | |
| 244 | return (*funcs->QueryLargestOffscreenLinear) (pScreen, size, gran, |
| 245 | severity); |
| 246 | } |
| 247 | |
| 248 | Bool |
| 249 | xf86PurgeUnlockedOffscreenAreas(ScreenPtr pScreen) |
| 250 | { |
| 251 | FBManagerFuncsPtr funcs; |
| 252 | |
| 253 | if (xf86FBManagerKey == NULL) |
| 254 | return FALSE; |
| 255 | if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 256 | xf86FBManagerKey))) |
| 257 | return FALSE; |
| 258 | |
| 259 | return (*funcs->PurgeOffscreenAreas) (pScreen); |
| 260 | } |
| 261 | |
| 262 | /************************************************************\ |
| 263 | |
| 264 | Below is a specific implementation of an offscreen manager. |
| 265 | |
| 266 | \************************************************************/ |
| 267 | |
| 268 | static DevPrivateKeyRec xf86FBScreenKeyRec; |
| 269 | |
| 270 | #define xf86FBScreenKey (&xf86FBScreenKeyRec) |
| 271 | |
| 272 | typedef struct _FBLink { |
| 273 | FBArea area; |
| 274 | struct _FBLink *next; |
| 275 | } FBLink, *FBLinkPtr; |
| 276 | |
| 277 | typedef struct _FBLinearLink { |
| 278 | FBLinear linear; |
| 279 | int free; /* need to add free here as FBLinear is publicly accessible */ |
| 280 | FBAreaPtr area; /* only used if allocation came from XY area */ |
| 281 | struct _FBLinearLink *next; |
| 282 | } FBLinearLink, *FBLinearLinkPtr; |
| 283 | |
| 284 | typedef struct { |
| 285 | ScreenPtr pScreen; |
| 286 | RegionPtr InitialBoxes; |
| 287 | RegionPtr FreeBoxes; |
| 288 | FBLinkPtr UsedAreas; |
| 289 | int NumUsedAreas; |
| 290 | FBLinearLinkPtr LinearAreas; |
| 291 | CloseScreenProcPtr CloseScreen; |
| 292 | int NumCallbacks; |
| 293 | FreeBoxCallbackProcPtr *FreeBoxesUpdateCallback; |
| 294 | DevUnion *devPrivates; |
| 295 | } FBManager, *FBManagerPtr; |
| 296 | |
| 297 | static void |
| 298 | SendCallFreeBoxCallbacks(FBManagerPtr offman) |
| 299 | { |
| 300 | int i = offman->NumCallbacks; |
| 301 | |
| 302 | while (i--) { |
| 303 | (*offman->FreeBoxesUpdateCallback[i]) (offman->pScreen, |
| 304 | offman->FreeBoxes, |
| 305 | offman->devPrivates[i].ptr); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | static Bool |
| 310 | localRegisterFreeBoxCallback(ScreenPtr pScreen, |
| 311 | FreeBoxCallbackProcPtr FreeBoxCallback, |
| 312 | pointer devPriv) |
| 313 | { |
| 314 | FBManagerPtr offman; |
| 315 | FreeBoxCallbackProcPtr *newCallbacks; |
| 316 | DevUnion *newPrivates; |
| 317 | |
| 318 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 319 | xf86FBScreenKey); |
| 320 | newCallbacks = realloc(offman->FreeBoxesUpdateCallback, |
| 321 | sizeof(FreeBoxCallbackProcPtr) * |
| 322 | (offman->NumCallbacks + 1)); |
| 323 | if (!newCallbacks) |
| 324 | return FALSE; |
| 325 | else |
| 326 | offman->FreeBoxesUpdateCallback = newCallbacks; |
| 327 | |
| 328 | newPrivates = realloc(offman->devPrivates, |
| 329 | sizeof(DevUnion) * (offman->NumCallbacks + 1)); |
| 330 | if (!newPrivates) |
| 331 | return FALSE; |
| 332 | else |
| 333 | offman->devPrivates = newPrivates; |
| 334 | |
| 335 | offman->FreeBoxesUpdateCallback[offman->NumCallbacks] = FreeBoxCallback; |
| 336 | offman->devPrivates[offman->NumCallbacks].ptr = devPriv; |
| 337 | offman->NumCallbacks++; |
| 338 | |
| 339 | SendCallFreeBoxCallbacks(offman); |
| 340 | |
| 341 | return TRUE; |
| 342 | } |
| 343 | |
| 344 | static FBAreaPtr |
| 345 | AllocateArea(FBManagerPtr offman, |
| 346 | int w, int h, |
| 347 | int granularity, |
| 348 | MoveAreaCallbackProcPtr moveCB, |
| 349 | RemoveAreaCallbackProcPtr removeCB, pointer privData) |
| 350 | { |
| 351 | ScreenPtr pScreen = offman->pScreen; |
| 352 | FBLinkPtr link = NULL; |
| 353 | FBAreaPtr area = NULL; |
| 354 | RegionRec NewReg; |
| 355 | int i, x = 0, num; |
| 356 | BoxPtr boxp; |
| 357 | |
| 358 | if (granularity <= 1) |
| 359 | granularity = 0; |
| 360 | |
| 361 | boxp = RegionRects(offman->FreeBoxes); |
| 362 | num = RegionNumRects(offman->FreeBoxes); |
| 363 | |
| 364 | /* look through the free boxes */ |
| 365 | for (i = 0; i < num; i++, boxp++) { |
| 366 | x = boxp->x1; |
| 367 | if (granularity > 1) |
| 368 | x = ((x + granularity - 1) / granularity) * granularity; |
| 369 | |
| 370 | if (((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w)) |
| 371 | continue; |
| 372 | |
| 373 | link = malloc(sizeof(FBLink)); |
| 374 | if (!link) |
| 375 | return NULL; |
| 376 | |
| 377 | area = &(link->area); |
| 378 | link->next = offman->UsedAreas; |
| 379 | offman->UsedAreas = link; |
| 380 | offman->NumUsedAreas++; |
| 381 | break; |
| 382 | } |
| 383 | |
| 384 | /* try to boot a removeable one out if we are not expendable ourselves */ |
| 385 | if (!area && !removeCB) { |
| 386 | link = offman->UsedAreas; |
| 387 | |
| 388 | while (link) { |
| 389 | if (!link->area.RemoveAreaCallback) { |
| 390 | link = link->next; |
| 391 | continue; |
| 392 | } |
| 393 | |
| 394 | boxp = &(link->area.box); |
| 395 | x = boxp->x1; |
| 396 | if (granularity > 1) |
| 397 | x = ((x + granularity - 1) / granularity) * granularity; |
| 398 | |
| 399 | if (((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w)) { |
| 400 | link = link->next; |
| 401 | continue; |
| 402 | } |
| 403 | |
| 404 | /* bye, bye */ |
| 405 | (*link->area.RemoveAreaCallback) (&link->area); |
| 406 | RegionInit(&NewReg, &(link->area.box), 1); |
| 407 | RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &NewReg); |
| 408 | RegionUninit(&NewReg); |
| 409 | |
| 410 | area = &(link->area); |
| 411 | break; |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | if (area) { |
| 416 | area->pScreen = pScreen; |
| 417 | area->granularity = granularity; |
| 418 | area->box.x1 = x; |
| 419 | area->box.x2 = x + w; |
| 420 | area->box.y1 = boxp->y1; |
| 421 | area->box.y2 = boxp->y1 + h; |
| 422 | area->MoveAreaCallback = moveCB; |
| 423 | area->RemoveAreaCallback = removeCB; |
| 424 | area->devPrivate.ptr = privData; |
| 425 | |
| 426 | RegionInit(&NewReg, &(area->box), 1); |
| 427 | RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &NewReg); |
| 428 | RegionUninit(&NewReg); |
| 429 | } |
| 430 | |
| 431 | return area; |
| 432 | } |
| 433 | |
| 434 | static FBAreaPtr |
| 435 | localAllocateOffscreenArea(ScreenPtr pScreen, |
| 436 | int w, int h, |
| 437 | int gran, |
| 438 | MoveAreaCallbackProcPtr moveCB, |
| 439 | RemoveAreaCallbackProcPtr removeCB, pointer privData) |
| 440 | { |
| 441 | FBManagerPtr offman; |
| 442 | FBAreaPtr area = NULL; |
| 443 | |
| 444 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 445 | xf86FBScreenKey); |
| 446 | if ((area = AllocateArea(offman, w, h, gran, moveCB, removeCB, privData))) |
| 447 | SendCallFreeBoxCallbacks(offman); |
| 448 | |
| 449 | return area; |
| 450 | } |
| 451 | |
| 452 | static void |
| 453 | localFreeOffscreenArea(FBAreaPtr area) |
| 454 | { |
| 455 | FBManagerPtr offman; |
| 456 | FBLinkPtr pLink, pLinkPrev = NULL; |
| 457 | RegionRec FreedRegion; |
| 458 | ScreenPtr pScreen; |
| 459 | |
| 460 | pScreen = area->pScreen; |
| 461 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 462 | xf86FBScreenKey); |
| 463 | pLink = offman->UsedAreas; |
| 464 | if (!pLink) |
| 465 | return; |
| 466 | |
| 467 | while (&(pLink->area) != area) { |
| 468 | pLinkPrev = pLink; |
| 469 | pLink = pLink->next; |
| 470 | if (!pLink) |
| 471 | return; |
| 472 | } |
| 473 | |
| 474 | /* put the area back into the pool */ |
| 475 | RegionInit(&FreedRegion, &(pLink->area.box), 1); |
| 476 | RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedRegion); |
| 477 | RegionUninit(&FreedRegion); |
| 478 | |
| 479 | if (pLinkPrev) |
| 480 | pLinkPrev->next = pLink->next; |
| 481 | else |
| 482 | offman->UsedAreas = pLink->next; |
| 483 | |
| 484 | free(pLink); |
| 485 | offman->NumUsedAreas--; |
| 486 | |
| 487 | SendCallFreeBoxCallbacks(offman); |
| 488 | } |
| 489 | |
| 490 | static Bool |
| 491 | localResizeOffscreenArea(FBAreaPtr resize, int w, int h) |
| 492 | { |
| 493 | FBManagerPtr offman; |
| 494 | ScreenPtr pScreen; |
| 495 | BoxRec OrigArea; |
| 496 | RegionRec FreedReg; |
| 497 | FBAreaPtr area = NULL; |
| 498 | FBLinkPtr pLink, newLink, pLinkPrev = NULL; |
| 499 | |
| 500 | pScreen = resize->pScreen; |
| 501 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 502 | xf86FBScreenKey); |
| 503 | /* find this link */ |
| 504 | if (!(pLink = offman->UsedAreas)) |
| 505 | return FALSE; |
| 506 | |
| 507 | while (&(pLink->area) != resize) { |
| 508 | pLinkPrev = pLink; |
| 509 | pLink = pLink->next; |
| 510 | if (!pLink) |
| 511 | return FALSE; |
| 512 | } |
| 513 | |
| 514 | OrigArea.x1 = resize->box.x1; |
| 515 | OrigArea.x2 = resize->box.x2; |
| 516 | OrigArea.y1 = resize->box.y1; |
| 517 | OrigArea.y2 = resize->box.y2; |
| 518 | |
| 519 | /* if it's smaller, this is easy */ |
| 520 | |
| 521 | if ((w <= (resize->box.x2 - resize->box.x1)) && |
| 522 | (h <= (resize->box.y2 - resize->box.y1))) { |
| 523 | RegionRec NewReg; |
| 524 | |
| 525 | resize->box.x2 = resize->box.x1 + w; |
| 526 | resize->box.y2 = resize->box.y1 + h; |
| 527 | |
| 528 | if ((resize->box.y2 == OrigArea.y2) && (resize->box.x2 == OrigArea.x2)) |
| 529 | return TRUE; |
| 530 | |
| 531 | RegionInit(&FreedReg, &OrigArea, 1); |
| 532 | RegionInit(&NewReg, &(resize->box), 1); |
| 533 | RegionSubtract(&FreedReg, &FreedReg, &NewReg); |
| 534 | RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedReg); |
| 535 | RegionUninit(&FreedReg); |
| 536 | RegionUninit(&NewReg); |
| 537 | |
| 538 | SendCallFreeBoxCallbacks(offman); |
| 539 | |
| 540 | return TRUE; |
| 541 | } |
| 542 | |
| 543 | /* otherwise we remove the old region */ |
| 544 | |
| 545 | RegionInit(&FreedReg, &OrigArea, 1); |
| 546 | RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedReg); |
| 547 | |
| 548 | /* remove the old link */ |
| 549 | if (pLinkPrev) |
| 550 | pLinkPrev->next = pLink->next; |
| 551 | else |
| 552 | offman->UsedAreas = pLink->next; |
| 553 | |
| 554 | /* and try to add a new one */ |
| 555 | |
| 556 | if ((area = AllocateArea(offman, w, h, resize->granularity, |
| 557 | resize->MoveAreaCallback, |
| 558 | resize->RemoveAreaCallback, |
| 559 | resize->devPrivate.ptr))) { |
| 560 | |
| 561 | /* copy data over to our link and replace the new with old */ |
| 562 | memcpy(resize, area, sizeof(FBArea)); |
| 563 | |
| 564 | pLinkPrev = NULL; |
| 565 | newLink = offman->UsedAreas; |
| 566 | |
| 567 | while (&(newLink->area) != area) { |
| 568 | pLinkPrev = newLink; |
| 569 | newLink = newLink->next; |
| 570 | } |
| 571 | |
| 572 | if (pLinkPrev) |
| 573 | pLinkPrev->next = newLink->next; |
| 574 | else |
| 575 | offman->UsedAreas = newLink->next; |
| 576 | |
| 577 | pLink->next = offman->UsedAreas; |
| 578 | offman->UsedAreas = pLink; |
| 579 | |
| 580 | free(newLink); |
| 581 | |
| 582 | /* AllocateArea added one but we really only exchanged one */ |
| 583 | offman->NumUsedAreas--; |
| 584 | } |
| 585 | else { |
| 586 | /* reinstate the old region */ |
| 587 | RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &FreedReg); |
| 588 | RegionUninit(&FreedReg); |
| 589 | |
| 590 | pLink->next = offman->UsedAreas; |
| 591 | offman->UsedAreas = pLink; |
| 592 | return FALSE; |
| 593 | } |
| 594 | |
| 595 | RegionUninit(&FreedReg); |
| 596 | |
| 597 | SendCallFreeBoxCallbacks(offman); |
| 598 | |
| 599 | return TRUE; |
| 600 | } |
| 601 | |
| 602 | static Bool |
| 603 | localQueryLargestOffscreenArea(ScreenPtr pScreen, |
| 604 | int *width, int *height, |
| 605 | int granularity, int preferences, int severity) |
| 606 | { |
| 607 | FBManagerPtr offman; |
| 608 | RegionPtr newRegion = NULL; |
| 609 | BoxPtr pbox; |
| 610 | int nbox; |
| 611 | int x, w, h, area, oldArea; |
| 612 | |
| 613 | *width = *height = oldArea = 0; |
| 614 | |
| 615 | if (granularity <= 1) |
| 616 | granularity = 0; |
| 617 | |
| 618 | if ((preferences < 0) || (preferences > 3)) |
| 619 | return FALSE; |
| 620 | |
| 621 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 622 | xf86FBScreenKey); |
| 623 | if (severity < 0) |
| 624 | severity = 0; |
| 625 | if (severity > 2) |
| 626 | severity = 2; |
| 627 | |
| 628 | switch (severity) { |
| 629 | case 2: |
| 630 | if (offman->NumUsedAreas) { |
| 631 | FBLinkPtr pLink; |
| 632 | RegionRec tmpRegion; |
| 633 | |
| 634 | newRegion = RegionCreate(NULL, 1); |
| 635 | RegionCopy(newRegion, offman->InitialBoxes); |
| 636 | pLink = offman->UsedAreas; |
| 637 | |
| 638 | while (pLink) { |
| 639 | if (!pLink->area.RemoveAreaCallback) { |
| 640 | RegionInit(&tmpRegion, &(pLink->area.box), 1); |
| 641 | RegionSubtract(newRegion, newRegion, &tmpRegion); |
| 642 | RegionUninit(&tmpRegion); |
| 643 | } |
| 644 | pLink = pLink->next; |
| 645 | } |
| 646 | |
| 647 | nbox = RegionNumRects(newRegion); |
| 648 | pbox = RegionRects(newRegion); |
| 649 | break; |
| 650 | } |
| 651 | case 1: |
| 652 | if (offman->NumUsedAreas) { |
| 653 | FBLinkPtr pLink; |
| 654 | RegionRec tmpRegion; |
| 655 | |
| 656 | newRegion = RegionCreate(NULL, 1); |
| 657 | RegionCopy(newRegion, offman->FreeBoxes); |
| 658 | pLink = offman->UsedAreas; |
| 659 | |
| 660 | while (pLink) { |
| 661 | if (pLink->area.RemoveAreaCallback) { |
| 662 | RegionInit(&tmpRegion, &(pLink->area.box), 1); |
| 663 | RegionAppend(newRegion, &tmpRegion); |
| 664 | RegionUninit(&tmpRegion); |
| 665 | } |
| 666 | pLink = pLink->next; |
| 667 | } |
| 668 | |
| 669 | nbox = RegionNumRects(newRegion); |
| 670 | pbox = RegionRects(newRegion); |
| 671 | break; |
| 672 | } |
| 673 | default: |
| 674 | nbox = RegionNumRects(offman->FreeBoxes); |
| 675 | pbox = RegionRects(offman->FreeBoxes); |
| 676 | break; |
| 677 | } |
| 678 | |
| 679 | while (nbox--) { |
| 680 | x = pbox->x1; |
| 681 | if (granularity > 1) |
| 682 | x = ((x + granularity - 1) / granularity) * granularity; |
| 683 | |
| 684 | w = pbox->x2 - x; |
| 685 | h = pbox->y2 - pbox->y1; |
| 686 | area = w * h; |
| 687 | |
| 688 | if (w > 0) { |
| 689 | Bool gotIt = FALSE; |
| 690 | |
| 691 | switch (preferences) { |
| 692 | case FAVOR_AREA_THEN_WIDTH: |
| 693 | if ((area > oldArea) || ((area == oldArea) && (w > *width))) |
| 694 | gotIt = TRUE; |
| 695 | break; |
| 696 | case FAVOR_AREA_THEN_HEIGHT: |
| 697 | if ((area > oldArea) || ((area == oldArea) && (h > *height))) |
| 698 | gotIt = TRUE; |
| 699 | break; |
| 700 | case FAVOR_WIDTH_THEN_AREA: |
| 701 | if ((w > *width) || ((w == *width) && (area > oldArea))) |
| 702 | gotIt = TRUE; |
| 703 | break; |
| 704 | case FAVOR_HEIGHT_THEN_AREA: |
| 705 | if ((h > *height) || ((h == *height) && (area > oldArea))) |
| 706 | gotIt = TRUE; |
| 707 | break; |
| 708 | } |
| 709 | if (gotIt) { |
| 710 | *width = w; |
| 711 | *height = h; |
| 712 | oldArea = area; |
| 713 | } |
| 714 | } |
| 715 | pbox++; |
| 716 | } |
| 717 | |
| 718 | if (newRegion) |
| 719 | RegionDestroy(newRegion); |
| 720 | |
| 721 | return TRUE; |
| 722 | } |
| 723 | |
| 724 | static Bool |
| 725 | localPurgeUnlockedOffscreenAreas(ScreenPtr pScreen) |
| 726 | { |
| 727 | FBManagerPtr offman; |
| 728 | FBLinkPtr pLink, tmp, pPrev = NULL; |
| 729 | RegionRec FreedRegion; |
| 730 | Bool anyUsed = FALSE; |
| 731 | |
| 732 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 733 | xf86FBScreenKey); |
| 734 | pLink = offman->UsedAreas; |
| 735 | if (!pLink) |
| 736 | return TRUE; |
| 737 | |
| 738 | while (pLink) { |
| 739 | if (pLink->area.RemoveAreaCallback) { |
| 740 | (*pLink->area.RemoveAreaCallback) (&pLink->area); |
| 741 | |
| 742 | RegionInit(&FreedRegion, &(pLink->area.box), 1); |
| 743 | RegionAppend(offman->FreeBoxes, &FreedRegion); |
| 744 | RegionUninit(&FreedRegion); |
| 745 | |
| 746 | if (pPrev) |
| 747 | pPrev->next = pLink->next; |
| 748 | else |
| 749 | offman->UsedAreas = pLink->next; |
| 750 | |
| 751 | tmp = pLink; |
| 752 | pLink = pLink->next; |
| 753 | free(tmp); |
| 754 | offman->NumUsedAreas--; |
| 755 | anyUsed = TRUE; |
| 756 | } |
| 757 | else { |
| 758 | pPrev = pLink; |
| 759 | pLink = pLink->next; |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | if (anyUsed) { |
| 764 | RegionValidate(offman->FreeBoxes, &anyUsed); |
| 765 | SendCallFreeBoxCallbacks(offman); |
| 766 | } |
| 767 | |
| 768 | return TRUE; |
| 769 | } |
| 770 | |
| 771 | static void |
| 772 | LinearMoveCBWrapper(FBAreaPtr from, FBAreaPtr to) |
| 773 | { |
| 774 | /* this will never get called */ |
| 775 | } |
| 776 | |
| 777 | static void |
| 778 | LinearRemoveCBWrapper(FBAreaPtr area) |
| 779 | { |
| 780 | FBManagerPtr offman; |
| 781 | FBLinearLinkPtr pLink, pLinkPrev = NULL; |
| 782 | ScreenPtr pScreen = area->pScreen; |
| 783 | |
| 784 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 785 | xf86FBScreenKey); |
| 786 | pLink = offman->LinearAreas; |
| 787 | if (!pLink) |
| 788 | return; |
| 789 | |
| 790 | while (pLink->area != area) { |
| 791 | pLinkPrev = pLink; |
| 792 | pLink = pLink->next; |
| 793 | if (!pLink) |
| 794 | return; |
| 795 | } |
| 796 | |
| 797 | /* give the user the callback it is expecting */ |
| 798 | (*pLink->linear.RemoveLinearCallback) (&(pLink->linear)); |
| 799 | |
| 800 | if (pLinkPrev) |
| 801 | pLinkPrev->next = pLink->next; |
| 802 | else |
| 803 | offman->LinearAreas = pLink->next; |
| 804 | |
| 805 | free(pLink); |
| 806 | } |
| 807 | |
| 808 | static void |
| 809 | DumpDebug(FBLinearLinkPtr pLink) |
| 810 | { |
| 811 | #ifdef DEBUG |
| 812 | if (!pLink) |
| 813 | ErrorF("MMmm, PLINK IS NULL!\n"); |
| 814 | |
| 815 | while (pLink) { |
| 816 | ErrorF(" Offset:%08x, Size:%08x, %s,%s\n", |
| 817 | pLink->linear.offset, |
| 818 | pLink->linear.size, |
| 819 | pLink->free ? "Free" : "Used", pLink->area ? "Area" : "Linear"); |
| 820 | |
| 821 | pLink = pLink->next; |
| 822 | } |
| 823 | #endif |
| 824 | } |
| 825 | |
| 826 | static FBLinearPtr |
| 827 | AllocateLinear(FBManagerPtr offman, int size, int granularity, pointer privData) |
| 828 | { |
| 829 | ScreenPtr pScreen = offman->pScreen; |
| 830 | FBLinearLinkPtr linear = NULL; |
| 831 | FBLinearLinkPtr newlink = NULL; |
| 832 | int offset, end; |
| 833 | |
| 834 | if (size <= 0) |
| 835 | return NULL; |
| 836 | |
| 837 | if (!offman->LinearAreas) |
| 838 | return NULL; |
| 839 | |
| 840 | linear = offman->LinearAreas; |
| 841 | while (linear) { |
| 842 | /* Make sure we get a free area that's not an XY fallback case */ |
| 843 | if (!linear->area && linear->free) { |
| 844 | offset = linear->linear.offset; |
| 845 | if (granularity > 1) |
| 846 | offset = |
| 847 | ((offset + granularity - 1) / granularity) * granularity; |
| 848 | end = offset + size; |
| 849 | if (end <= (linear->linear.offset + linear->linear.size)) |
| 850 | break; |
| 851 | } |
| 852 | linear = linear->next; |
| 853 | } |
| 854 | if (!linear) |
| 855 | return NULL; |
| 856 | |
| 857 | /* break left */ |
| 858 | if (offset > linear->linear.offset) { |
| 859 | newlink = malloc(sizeof(FBLinearLink)); |
| 860 | if (!newlink) |
| 861 | return NULL; |
| 862 | newlink->area = NULL; |
| 863 | newlink->linear.offset = offset; |
| 864 | newlink->linear.size = |
| 865 | linear->linear.size - (offset - linear->linear.offset); |
| 866 | newlink->free = 1; |
| 867 | newlink->next = linear->next; |
| 868 | linear->linear.size -= newlink->linear.size; |
| 869 | linear->next = newlink; |
| 870 | linear = newlink; |
| 871 | } |
| 872 | |
| 873 | /* break right */ |
| 874 | if (size < linear->linear.size) { |
| 875 | newlink = malloc(sizeof(FBLinearLink)); |
| 876 | if (!newlink) |
| 877 | return NULL; |
| 878 | newlink->area = NULL; |
| 879 | newlink->linear.offset = offset + size; |
| 880 | newlink->linear.size = linear->linear.size - size; |
| 881 | newlink->free = 1; |
| 882 | newlink->next = linear->next; |
| 883 | linear->linear.size = size; |
| 884 | linear->next = newlink; |
| 885 | } |
| 886 | |
| 887 | /* p = middle block */ |
| 888 | linear->linear.granularity = granularity; |
| 889 | linear->free = 0; |
| 890 | linear->linear.pScreen = pScreen; |
| 891 | linear->linear.MoveLinearCallback = NULL; |
| 892 | linear->linear.RemoveLinearCallback = NULL; |
| 893 | linear->linear.devPrivate.ptr = NULL; |
| 894 | |
| 895 | DumpDebug(offman->LinearAreas); |
| 896 | |
| 897 | return &(linear->linear); |
| 898 | } |
| 899 | |
| 900 | static FBLinearPtr |
| 901 | localAllocateOffscreenLinear(ScreenPtr pScreen, |
| 902 | int length, |
| 903 | int gran, |
| 904 | MoveLinearCallbackProcPtr moveCB, |
| 905 | RemoveLinearCallbackProcPtr removeCB, |
| 906 | pointer privData) |
| 907 | { |
| 908 | FBManagerPtr offman; |
| 909 | FBLinearLinkPtr link; |
| 910 | FBAreaPtr area; |
| 911 | FBLinearPtr linear = NULL; |
| 912 | BoxPtr extents; |
| 913 | int w, h, pitch; |
| 914 | |
| 915 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 916 | xf86FBScreenKey); |
| 917 | |
| 918 | /* Try to allocate from linear memory first...... */ |
| 919 | DebugF("ALLOCATING LINEAR\n"); |
| 920 | if ((linear = AllocateLinear(offman, length, gran, privData))) |
| 921 | return linear; |
| 922 | |
| 923 | DebugF("NOPE, ALLOCATING AREA\n"); |
| 924 | |
| 925 | if (!(link = malloc(sizeof(FBLinearLink)))) |
| 926 | return NULL; |
| 927 | |
| 928 | /* No linear available, so try and pinch some from the XY areas */ |
| 929 | extents = RegionExtents(offman->InitialBoxes); |
| 930 | pitch = extents->x2 - extents->x1; |
| 931 | |
| 932 | if (gran > 1) { |
| 933 | if (gran > pitch) { |
| 934 | /* we can't match the specified alignment with XY allocations */ |
| 935 | free(link); |
| 936 | return NULL; |
| 937 | } |
| 938 | |
| 939 | if (pitch % gran) { |
| 940 | /* pitch and granularity aren't a perfect match, let's allocate |
| 941 | * a bit more so we can align later on |
| 942 | */ |
| 943 | length += gran - 1; |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | if (length < pitch) { /* special case */ |
| 948 | w = length; |
| 949 | h = 1; |
| 950 | } |
| 951 | else { |
| 952 | w = pitch; |
| 953 | h = (length + pitch - 1) / pitch; |
| 954 | } |
| 955 | |
| 956 | if ((area = localAllocateOffscreenArea(pScreen, w, h, gran, |
| 957 | moveCB ? LinearMoveCBWrapper : NULL, |
| 958 | removeCB ? LinearRemoveCBWrapper : |
| 959 | NULL, privData))) { |
| 960 | link->area = area; |
| 961 | link->free = 0; |
| 962 | link->next = offman->LinearAreas; |
| 963 | offman->LinearAreas = link; |
| 964 | linear = &(link->linear); |
| 965 | linear->pScreen = pScreen; |
| 966 | linear->size = h * w; |
| 967 | linear->offset = (pitch * area->box.y1) + area->box.x1; |
| 968 | if (gran > 1) |
| 969 | linear->offset = ((linear->offset + gran - 1) / gran) * gran; |
| 970 | linear->granularity = gran; |
| 971 | linear->MoveLinearCallback = moveCB; |
| 972 | linear->RemoveLinearCallback = removeCB; |
| 973 | linear->devPrivate.ptr = privData; |
| 974 | } |
| 975 | else |
| 976 | free(link); |
| 977 | |
| 978 | DumpDebug(offman->LinearAreas); |
| 979 | |
| 980 | return linear; |
| 981 | } |
| 982 | |
| 983 | static void |
| 984 | localFreeOffscreenLinear(FBLinearPtr linear) |
| 985 | { |
| 986 | FBManagerPtr offman; |
| 987 | FBLinearLinkPtr pLink, pLinkPrev = NULL; |
| 988 | ScreenPtr pScreen = linear->pScreen; |
| 989 | |
| 990 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 991 | xf86FBScreenKey); |
| 992 | pLink = offman->LinearAreas; |
| 993 | if (!pLink) |
| 994 | return; |
| 995 | |
| 996 | while (&(pLink->linear) != linear) { |
| 997 | pLinkPrev = pLink; |
| 998 | pLink = pLink->next; |
| 999 | if (!pLink) |
| 1000 | return; |
| 1001 | } |
| 1002 | |
| 1003 | if (pLink->area) { /* really an XY area */ |
| 1004 | DebugF("FREEING AREA\n"); |
| 1005 | localFreeOffscreenArea(pLink->area); |
| 1006 | if (pLinkPrev) |
| 1007 | pLinkPrev->next = pLink->next; |
| 1008 | else |
| 1009 | offman->LinearAreas = pLink->next; |
| 1010 | free(pLink); |
| 1011 | DumpDebug(offman->LinearAreas); |
| 1012 | return; |
| 1013 | } |
| 1014 | |
| 1015 | pLink->free = 1; |
| 1016 | |
| 1017 | if (pLink->next && pLink->next->free) { |
| 1018 | FBLinearLinkPtr p = pLink->next; |
| 1019 | |
| 1020 | pLink->linear.size += p->linear.size; |
| 1021 | pLink->next = p->next; |
| 1022 | free(p); |
| 1023 | } |
| 1024 | |
| 1025 | if (pLinkPrev) { |
| 1026 | if (pLinkPrev->next && pLinkPrev->next->free && !pLinkPrev->area) { |
| 1027 | FBLinearLinkPtr p = pLinkPrev->next; |
| 1028 | |
| 1029 | pLinkPrev->linear.size += p->linear.size; |
| 1030 | pLinkPrev->next = p->next; |
| 1031 | free(p); |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | DebugF("FREEING LINEAR\n"); |
| 1036 | DumpDebug(offman->LinearAreas); |
| 1037 | } |
| 1038 | |
| 1039 | static Bool |
| 1040 | localResizeOffscreenLinear(FBLinearPtr resize, int length) |
| 1041 | { |
| 1042 | FBManagerPtr offman; |
| 1043 | FBLinearLinkPtr pLink; |
| 1044 | ScreenPtr pScreen = resize->pScreen; |
| 1045 | |
| 1046 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 1047 | xf86FBScreenKey); |
| 1048 | pLink = offman->LinearAreas; |
| 1049 | if (!pLink) |
| 1050 | return FALSE; |
| 1051 | |
| 1052 | while (&(pLink->linear) != resize) { |
| 1053 | pLink = pLink->next; |
| 1054 | if (!pLink) |
| 1055 | return FALSE; |
| 1056 | } |
| 1057 | |
| 1058 | /* This could actually be alot smarter and try to move allocations |
| 1059 | from XY to linear when available. For now if it was XY, we keep |
| 1060 | it XY */ |
| 1061 | |
| 1062 | if (pLink->area) { /* really an XY area */ |
| 1063 | BoxPtr extents; |
| 1064 | int pitch, w, h; |
| 1065 | |
| 1066 | extents = RegionExtents(offman->InitialBoxes); |
| 1067 | pitch = extents->x2 - extents->x1; |
| 1068 | |
| 1069 | if (length < pitch) { /* special case */ |
| 1070 | w = length; |
| 1071 | h = 1; |
| 1072 | } |
| 1073 | else { |
| 1074 | w = pitch; |
| 1075 | h = (length + pitch - 1) / pitch; |
| 1076 | } |
| 1077 | |
| 1078 | if (localResizeOffscreenArea(pLink->area, w, h)) { |
| 1079 | resize->size = h * w; |
| 1080 | resize->offset = |
| 1081 | (pitch * pLink->area->box.y1) + pLink->area->box.x1; |
| 1082 | return TRUE; |
| 1083 | } |
| 1084 | } |
| 1085 | else { |
| 1086 | /* TODO!!!! resize the linear area */ |
| 1087 | } |
| 1088 | |
| 1089 | return FALSE; |
| 1090 | } |
| 1091 | |
| 1092 | static Bool |
| 1093 | localQueryLargestOffscreenLinear(ScreenPtr pScreen, |
| 1094 | int *size, int gran, int priority) |
| 1095 | { |
| 1096 | FBManagerPtr offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 1097 | xf86FBScreenKey); |
| 1098 | FBLinearLinkPtr pLink; |
| 1099 | FBLinearLinkPtr pLinkRet; |
| 1100 | |
| 1101 | *size = 0; |
| 1102 | |
| 1103 | pLink = offman->LinearAreas; |
| 1104 | |
| 1105 | if (pLink && !pLink->area) { |
| 1106 | pLinkRet = pLink; |
| 1107 | while (pLink) { |
| 1108 | if (pLink->free) { |
| 1109 | if (pLink->linear.size > pLinkRet->linear.size) |
| 1110 | pLinkRet = pLink; |
| 1111 | } |
| 1112 | pLink = pLink->next; |
| 1113 | } |
| 1114 | |
| 1115 | if (pLinkRet->free) { |
| 1116 | *size = pLinkRet->linear.size; |
| 1117 | return TRUE; |
| 1118 | } |
| 1119 | } |
| 1120 | else { |
| 1121 | int w, h; |
| 1122 | |
| 1123 | if (localQueryLargestOffscreenArea(pScreen, &w, &h, gran, |
| 1124 | FAVOR_WIDTH_THEN_AREA, priority)) { |
| 1125 | FBManagerPtr offman; |
| 1126 | BoxPtr extents; |
| 1127 | |
| 1128 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 1129 | xf86FBScreenKey); |
| 1130 | extents = RegionExtents(offman->InitialBoxes); |
| 1131 | if ((extents->x2 - extents->x1) == w) |
| 1132 | *size = w * h; |
| 1133 | return TRUE; |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | return FALSE; |
| 1138 | } |
| 1139 | |
| 1140 | static FBManagerFuncs xf86FBManFuncs = { |
| 1141 | localAllocateOffscreenArea, |
| 1142 | localFreeOffscreenArea, |
| 1143 | localResizeOffscreenArea, |
| 1144 | localQueryLargestOffscreenArea, |
| 1145 | localRegisterFreeBoxCallback, |
| 1146 | localAllocateOffscreenLinear, |
| 1147 | localFreeOffscreenLinear, |
| 1148 | localResizeOffscreenLinear, |
| 1149 | localQueryLargestOffscreenLinear, |
| 1150 | localPurgeUnlockedOffscreenAreas |
| 1151 | }; |
| 1152 | |
| 1153 | static Bool |
| 1154 | xf86FBCloseScreen(ScreenPtr pScreen) |
| 1155 | { |
| 1156 | FBLinkPtr pLink, tmp; |
| 1157 | FBLinearLinkPtr pLinearLink, tmp2; |
| 1158 | FBManagerPtr offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 1159 | xf86FBScreenKey); |
| 1160 | |
| 1161 | pScreen->CloseScreen = offman->CloseScreen; |
| 1162 | |
| 1163 | pLink = offman->UsedAreas; |
| 1164 | while (pLink) { |
| 1165 | tmp = pLink; |
| 1166 | pLink = pLink->next; |
| 1167 | free(tmp); |
| 1168 | } |
| 1169 | |
| 1170 | pLinearLink = offman->LinearAreas; |
| 1171 | while (pLinearLink) { |
| 1172 | tmp2 = pLinearLink; |
| 1173 | pLinearLink = pLinearLink->next; |
| 1174 | free(tmp2); |
| 1175 | } |
| 1176 | |
| 1177 | RegionDestroy(offman->InitialBoxes); |
| 1178 | RegionDestroy(offman->FreeBoxes); |
| 1179 | |
| 1180 | free(offman->FreeBoxesUpdateCallback); |
| 1181 | free(offman->devPrivates); |
| 1182 | free(offman); |
| 1183 | dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, NULL); |
| 1184 | |
| 1185 | return (*pScreen->CloseScreen) (pScreen); |
| 1186 | } |
| 1187 | |
| 1188 | Bool |
| 1189 | xf86InitFBManager(ScreenPtr pScreen, BoxPtr FullBox) |
| 1190 | { |
| 1191 | ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen); |
| 1192 | RegionRec ScreenRegion; |
| 1193 | RegionRec FullRegion; |
| 1194 | BoxRec ScreenBox; |
| 1195 | Bool ret; |
| 1196 | |
| 1197 | ScreenBox.x1 = 0; |
| 1198 | ScreenBox.y1 = 0; |
| 1199 | ScreenBox.x2 = pScrn->virtualX; |
| 1200 | ScreenBox.y2 = pScrn->virtualY; |
| 1201 | |
| 1202 | if ((FullBox->x1 > ScreenBox.x1) || (FullBox->y1 > ScreenBox.y1) || |
| 1203 | (FullBox->x2 < ScreenBox.x2) || (FullBox->y2 < ScreenBox.y2)) { |
| 1204 | return FALSE; |
| 1205 | } |
| 1206 | |
| 1207 | if (FullBox->y2 < FullBox->y1) |
| 1208 | return FALSE; |
| 1209 | if (FullBox->x2 < FullBox->x1) |
| 1210 | return FALSE; |
| 1211 | |
| 1212 | RegionInit(&ScreenRegion, &ScreenBox, 1); |
| 1213 | RegionInit(&FullRegion, FullBox, 1); |
| 1214 | |
| 1215 | RegionSubtract(&FullRegion, &FullRegion, &ScreenRegion); |
| 1216 | |
| 1217 | ret = xf86InitFBManagerRegion(pScreen, &FullRegion); |
| 1218 | |
| 1219 | RegionUninit(&ScreenRegion); |
| 1220 | RegionUninit(&FullRegion); |
| 1221 | |
| 1222 | return ret; |
| 1223 | } |
| 1224 | |
| 1225 | Bool |
| 1226 | xf86InitFBManagerArea(ScreenPtr pScreen, int PixelArea, int Verbosity) |
| 1227 | { |
| 1228 | ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen); |
| 1229 | xRectangle Rect[3]; |
| 1230 | RegionPtr pRegion, pScreenRegion; |
| 1231 | int nRect; |
| 1232 | Bool ret = FALSE; |
| 1233 | |
| 1234 | if (PixelArea < (pScrn->displayWidth * pScrn->virtualY)) |
| 1235 | return FALSE; |
| 1236 | |
| 1237 | Rect[0].x = Rect[0].y = 0; |
| 1238 | Rect[0].width = pScrn->displayWidth; |
| 1239 | Rect[0].height = PixelArea / pScrn->displayWidth; |
| 1240 | nRect = 1; |
| 1241 | |
| 1242 | /* Add a possible partial scanline */ |
| 1243 | if ((Rect[1].height = Rect[1].width = PixelArea % pScrn->displayWidth)) { |
| 1244 | Rect[1].x = 0; |
| 1245 | Rect[1].y = Rect[0].height; |
| 1246 | Rect[1].height = 1; |
| 1247 | nRect++; |
| 1248 | } |
| 1249 | |
| 1250 | /* Factor out virtual resolution */ |
| 1251 | pRegion = RegionFromRects(nRect, Rect, 0); |
| 1252 | if (pRegion) { |
| 1253 | if (!RegionNar(pRegion)) { |
| 1254 | Rect[2].x = Rect[2].y = 0; |
| 1255 | Rect[2].width = pScrn->virtualX; |
| 1256 | Rect[2].height = pScrn->virtualY; |
| 1257 | |
| 1258 | pScreenRegion = RegionFromRects(1, &Rect[2], 0); |
| 1259 | if (pScreenRegion) { |
| 1260 | if (!RegionNar(pScreenRegion)) { |
| 1261 | RegionSubtract(pRegion, pRegion, pScreenRegion); |
| 1262 | |
| 1263 | ret = xf86InitFBManagerRegion(pScreen, pRegion); |
| 1264 | |
| 1265 | if (ret && xf86GetVerbosity() >= Verbosity) { |
| 1266 | int scrnIndex = pScrn->scrnIndex; |
| 1267 | |
| 1268 | xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity, |
| 1269 | "Largest offscreen areas (with overlaps):\n"); |
| 1270 | |
| 1271 | if (Rect[2].width < Rect[0].width) { |
| 1272 | xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity, |
| 1273 | "\t%d x %d rectangle at %d,0\n", |
| 1274 | Rect[0].width - Rect[2].width, |
| 1275 | Rect[0].height, Rect[2].width); |
| 1276 | } |
| 1277 | if (Rect[2].width < Rect[1].width) { |
| 1278 | xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity, |
| 1279 | "\t%d x %d rectangle at %d,0\n", |
| 1280 | Rect[1].width - Rect[2].width, |
| 1281 | Rect[0].height + Rect[1].height, |
| 1282 | Rect[2].width); |
| 1283 | } |
| 1284 | if (Rect[2].height < Rect[0].height) { |
| 1285 | xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity, |
| 1286 | "\t%d x %d rectangle at 0,%d\n", |
| 1287 | Rect[0].width, |
| 1288 | Rect[0].height - Rect[2].height, |
| 1289 | Rect[2].height); |
| 1290 | } |
| 1291 | if (Rect[1].height) { |
| 1292 | xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity, |
| 1293 | "\t%d x %d rectangle at 0,%d\n", |
| 1294 | Rect[1].width, |
| 1295 | Rect[0].height - Rect[2].height + |
| 1296 | Rect[1].height, Rect[2].height); |
| 1297 | } |
| 1298 | } |
| 1299 | } |
| 1300 | |
| 1301 | RegionDestroy(pScreenRegion); |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | RegionDestroy(pRegion); |
| 1306 | } |
| 1307 | |
| 1308 | return ret; |
| 1309 | } |
| 1310 | |
| 1311 | Bool |
| 1312 | xf86InitFBManagerRegion(ScreenPtr pScreen, RegionPtr FullRegion) |
| 1313 | { |
| 1314 | FBManagerPtr offman; |
| 1315 | |
| 1316 | if (RegionNil(FullRegion)) |
| 1317 | return FALSE; |
| 1318 | |
| 1319 | if (!dixRegisterPrivateKey(&xf86FBScreenKeyRec, PRIVATE_SCREEN, 0)) |
| 1320 | return FALSE; |
| 1321 | |
| 1322 | if (!xf86RegisterOffscreenManager(pScreen, &xf86FBManFuncs)) |
| 1323 | return FALSE; |
| 1324 | |
| 1325 | offman = malloc(sizeof(FBManager)); |
| 1326 | if (!offman) |
| 1327 | return FALSE; |
| 1328 | |
| 1329 | dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, offman); |
| 1330 | |
| 1331 | offman->CloseScreen = pScreen->CloseScreen; |
| 1332 | pScreen->CloseScreen = xf86FBCloseScreen; |
| 1333 | |
| 1334 | offman->InitialBoxes = RegionCreate(NULL, 1); |
| 1335 | offman->FreeBoxes = RegionCreate(NULL, 1); |
| 1336 | |
| 1337 | RegionCopy(offman->InitialBoxes, FullRegion); |
| 1338 | RegionCopy(offman->FreeBoxes, FullRegion); |
| 1339 | |
| 1340 | offman->pScreen = pScreen; |
| 1341 | offman->UsedAreas = NULL; |
| 1342 | offman->LinearAreas = NULL; |
| 1343 | offman->NumUsedAreas = 0; |
| 1344 | offman->NumCallbacks = 0; |
| 1345 | offman->FreeBoxesUpdateCallback = NULL; |
| 1346 | offman->devPrivates = NULL; |
| 1347 | |
| 1348 | return TRUE; |
| 1349 | } |
| 1350 | |
| 1351 | Bool |
| 1352 | xf86InitFBManagerLinear(ScreenPtr pScreen, int offset, int size) |
| 1353 | { |
| 1354 | FBManagerPtr offman; |
| 1355 | FBLinearLinkPtr link; |
| 1356 | FBLinearPtr linear; |
| 1357 | |
| 1358 | if (size <= 0) |
| 1359 | return FALSE; |
| 1360 | |
| 1361 | /* we expect people to have called the Area setup first for pixmap cache */ |
| 1362 | if (!dixLookupPrivate(&pScreen->devPrivates, xf86FBScreenKey)) |
| 1363 | return FALSE; |
| 1364 | |
| 1365 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 1366 | xf86FBScreenKey); |
| 1367 | offman->LinearAreas = malloc(sizeof(FBLinearLink)); |
| 1368 | if (!offman->LinearAreas) |
| 1369 | return FALSE; |
| 1370 | |
| 1371 | link = offman->LinearAreas; |
| 1372 | link->area = NULL; |
| 1373 | link->next = NULL; |
| 1374 | link->free = 1; |
| 1375 | linear = &(link->linear); |
| 1376 | linear->pScreen = pScreen; |
| 1377 | linear->size = size; |
| 1378 | linear->offset = offset; |
| 1379 | linear->granularity = 0; |
| 1380 | linear->MoveLinearCallback = NULL; |
| 1381 | linear->RemoveLinearCallback = NULL; |
| 1382 | linear->devPrivate.ptr = NULL; |
| 1383 | |
| 1384 | return TRUE; |
| 1385 | } |
| 1386 | |
| 1387 | /* This is an implementation specific function and should |
| 1388 | disappear after the next release. People should use the |
| 1389 | real linear functions instead */ |
| 1390 | |
| 1391 | FBAreaPtr |
| 1392 | xf86AllocateLinearOffscreenArea(ScreenPtr pScreen, |
| 1393 | int length, |
| 1394 | int gran, |
| 1395 | MoveAreaCallbackProcPtr moveCB, |
| 1396 | RemoveAreaCallbackProcPtr removeCB, |
| 1397 | pointer privData) |
| 1398 | { |
| 1399 | FBManagerFuncsPtr funcs; |
| 1400 | FBManagerPtr offman; |
| 1401 | BoxPtr extents; |
| 1402 | int w, h; |
| 1403 | |
| 1404 | if (xf86FBManagerKey == NULL) |
| 1405 | return NULL; |
| 1406 | if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 1407 | xf86FBManagerKey))) |
| 1408 | return NULL; |
| 1409 | |
| 1410 | offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates, |
| 1411 | xf86FBScreenKey); |
| 1412 | extents = RegionExtents(offman->InitialBoxes); |
| 1413 | w = extents->x2 - extents->x1; |
| 1414 | |
| 1415 | if (gran > 1) { |
| 1416 | if (gran > w) |
| 1417 | return NULL; |
| 1418 | |
| 1419 | if (w % gran) |
| 1420 | length += gran - 1; |
| 1421 | } |
| 1422 | |
| 1423 | if (length <= w) { /* special case */ |
| 1424 | h = 1; |
| 1425 | w = length; |
| 1426 | } |
| 1427 | else { |
| 1428 | h = (length + w - 1) / w; |
| 1429 | } |
| 1430 | |
| 1431 | return (*funcs->AllocateOffscreenArea) (pScreen, w, h, gran, moveCB, |
| 1432 | removeCB, privData); |
| 1433 | } |