cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % CCCC AAA CCCC H H EEEEE % |
| 7 | % C A A C H H E % |
| 8 | % C AAAAA C HHHHH EEE % |
| 9 | % C A A C H H E % |
| 10 | % CCCC A A CCCC H H EEEEE % |
| 11 | % % |
| 12 | % % |
| 13 | % MagickCore Pixel Cache Methods % |
| 14 | % % |
| 15 | % Software Design % |
| 16 | % John Cristy % |
| 17 | % July 1999 % |
| 18 | % % |
| 19 | % % |
| 20 | % Copyright 1999-2009 ImageMagick Studio LLC, a non-profit organization % |
| 21 | % dedicated to making software imaging solutions freely available. % |
| 22 | % % |
| 23 | % You may not use this file except in compliance with the License. You may % |
| 24 | % obtain a copy of the License at % |
| 25 | % % |
| 26 | % http://www.imagemagick.org/script/license.php % |
| 27 | % % |
| 28 | % Unless required by applicable law or agreed to in writing, software % |
| 29 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 30 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 31 | % See the License for the specific language governing permissions and % |
| 32 | % limitations under the License. % |
| 33 | % % |
| 34 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 35 | % |
| 36 | % |
| 37 | % |
| 38 | */ |
| 39 | |
| 40 | /* |
| 41 | Include declarations. |
| 42 | */ |
| 43 | #include "magick/studio.h" |
| 44 | #include "magick/blob.h" |
| 45 | #include "magick/blob-private.h" |
| 46 | #include "magick/cache.h" |
| 47 | #include "magick/cache-private.h" |
| 48 | #include "magick/color-private.h" |
| 49 | #include "magick/composite-private.h" |
| 50 | #include "magick/exception.h" |
| 51 | #include "magick/exception-private.h" |
| 52 | #include "magick/list.h" |
| 53 | #include "magick/log.h" |
| 54 | #include "magick/magick.h" |
| 55 | #include "magick/memory_.h" |
| 56 | #include "magick/pixel-private.h" |
| 57 | #include "magick/quantum.h" |
| 58 | #include "magick/random_.h" |
| 59 | #include "magick/resource_.h" |
| 60 | #include "magick/semaphore.h" |
| 61 | #include "magick/splay-tree.h" |
| 62 | #include "magick/string_.h" |
| 63 | #include "magick/thread-private.h" |
| 64 | #include "magick/utility.h" |
| 65 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 66 | #include "zlib.h" |
| 67 | #endif |
| 68 | |
| 69 | /* |
| 70 | Typedef declarations. |
| 71 | */ |
| 72 | typedef struct _MagickModulo |
| 73 | { |
| 74 | long |
| 75 | quotient, |
| 76 | remainder; |
| 77 | } MagickModulo; |
| 78 | |
| 79 | struct _NexusInfo |
| 80 | { |
| 81 | MagickBooleanType |
| 82 | mapped; |
| 83 | |
| 84 | RectangleInfo |
| 85 | region; |
| 86 | |
| 87 | MagickSizeType |
| 88 | length; |
| 89 | |
| 90 | PixelPacket |
| 91 | *cache, |
| 92 | *pixels; |
| 93 | |
| 94 | IndexPacket |
| 95 | *indexes; |
| 96 | |
| 97 | unsigned long |
| 98 | signature; |
| 99 | }; |
| 100 | |
| 101 | /* |
| 102 | Forward declarations. |
| 103 | */ |
| 104 | #if defined(__cplusplus) || defined(c_plusplus) |
| 105 | extern "C" { |
| 106 | #endif |
| 107 | |
| 108 | static const IndexPacket |
| 109 | *GetVirtualIndexesFromCache(const Image *); |
| 110 | |
| 111 | static const PixelPacket |
| 112 | *GetVirtualPixelCache(const Image *,const VirtualPixelMethod,const long, |
| 113 | const long,const unsigned long,const unsigned long,ExceptionInfo *), |
| 114 | *GetVirtualPixelsCache(const Image *); |
| 115 | |
| 116 | static MagickBooleanType |
| 117 | GetOneAuthenticPixelFromCache(Image *,const long,const long,PixelPacket *, |
| 118 | ExceptionInfo *), |
| 119 | GetOneVirtualPixelFromCache(const Image *,const VirtualPixelMethod, |
| 120 | const long,const long,PixelPacket *,ExceptionInfo *), |
| 121 | OpenPixelCache(Image *,const MapMode,ExceptionInfo *), |
| 122 | ReadPixelCacheIndexes(CacheInfo *,NexusInfo *,ExceptionInfo *), |
| 123 | ReadPixelCachePixels(CacheInfo *,NexusInfo *,ExceptionInfo *), |
| 124 | SyncAuthenticPixelsCache(Image *,ExceptionInfo *), |
| 125 | WritePixelCacheIndexes(CacheInfo *,NexusInfo *,ExceptionInfo *), |
| 126 | WritePixelCachePixels(CacheInfo *,NexusInfo *,ExceptionInfo *); |
| 127 | |
| 128 | static PixelPacket |
| 129 | *GetAuthenticPixelsCache(Image *,const long,const long,const unsigned long, |
| 130 | const unsigned long,ExceptionInfo *), |
| 131 | *QueueAuthenticPixelsCache(Image *,const long,const long,const unsigned long, |
| 132 | const unsigned long,ExceptionInfo *), |
| 133 | *SetPixelCacheNexusPixels(const Image *,const RectangleInfo *,NexusInfo *, |
| 134 | ExceptionInfo *); |
| 135 | |
| 136 | #if defined(__cplusplus) || defined(c_plusplus) |
| 137 | } |
| 138 | #endif |
| 139 | |
| 140 | /* |
| 141 | Global declarations. |
| 142 | */ |
| 143 | static volatile MagickBooleanType |
| 144 | instantiate_cache = MagickFalse; |
| 145 | |
| 146 | static SemaphoreInfo |
| 147 | *cache_semaphore = (SemaphoreInfo *) NULL; |
| 148 | |
| 149 | static SplayTreeInfo |
| 150 | *cache_resources = (SplayTreeInfo *) NULL; |
| 151 | |
| 152 | static time_t |
| 153 | cache_timer = 0; |
| 154 | |
| 155 | /* |
| 156 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 157 | % % |
| 158 | % % |
| 159 | % % |
| 160 | + A c q u i r e P i x e l C a c h e % |
| 161 | % % |
| 162 | % % |
| 163 | % % |
| 164 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 165 | % |
| 166 | % AcquirePixelCache() acquires a pixel cache. |
| 167 | % |
| 168 | % The format of the AcquirePixelCache() method is: |
| 169 | % |
| 170 | % Cache AcquirePixelCache(const unsigned long number_threads) |
| 171 | % |
| 172 | % A description of each parameter follows: |
| 173 | % |
| 174 | % o number_threads: the number of nexus threads. |
| 175 | % |
| 176 | */ |
| 177 | MagickExport Cache AcquirePixelCache(const unsigned long number_threads) |
| 178 | { |
| 179 | CacheInfo |
| 180 | *cache_info; |
| 181 | |
| 182 | cache_info=(CacheInfo *) AcquireAlignedMemory(1,sizeof(*cache_info)); |
| 183 | if (cache_info == (CacheInfo *) NULL) |
| 184 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 185 | (void) ResetMagickMemory(cache_info,0,sizeof(*cache_info)); |
| 186 | cache_info->type=UndefinedCache; |
cristy | 87528ea | 2009-09-10 14:53:56 +0000 | [diff] [blame] | 187 | cache_info->mode=IOMode; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 188 | cache_info->colorspace=RGBColorspace; |
| 189 | cache_info->file=(-1); |
| 190 | cache_info->id=GetMagickThreadId(); |
| 191 | cache_info->number_threads=number_threads; |
| 192 | if (number_threads == 0) |
| 193 | cache_info->number_threads=GetOpenMPMaximumThreads(); |
| 194 | cache_info->nexus_info=AcquirePixelCacheNexus(cache_info->number_threads); |
| 195 | if (cache_info->nexus_info == (NexusInfo **) NULL) |
| 196 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 197 | GetPixelCacheMethods(&cache_info->methods); |
| 198 | cache_info->reference_count=1; |
| 199 | cache_info->semaphore=AllocateSemaphoreInfo(); |
| 200 | cache_info->disk_semaphore=AllocateSemaphoreInfo(); |
| 201 | cache_info->debug=IsEventLogging(); |
| 202 | cache_info->signature=MagickSignature; |
| 203 | if ((cache_resources == (SplayTreeInfo *) NULL) && |
| 204 | (instantiate_cache == MagickFalse)) |
| 205 | { |
| 206 | AcquireSemaphoreInfo(&cache_semaphore); |
| 207 | if ((cache_resources == (SplayTreeInfo *) NULL) && |
| 208 | (instantiate_cache == MagickFalse)) |
| 209 | { |
| 210 | cache_resources=NewSplayTree((int (*)(const void *,const void *)) |
| 211 | NULL,(void *(*)(void *)) NULL,(void *(*)(void *)) NULL); |
| 212 | instantiate_cache=MagickTrue; |
| 213 | } |
| 214 | RelinquishSemaphoreInfo(cache_semaphore); |
| 215 | } |
| 216 | (void) AddValueToSplayTree(cache_resources,cache_info,cache_info); |
| 217 | return((Cache ) cache_info); |
| 218 | } |
| 219 | |
| 220 | /* |
| 221 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 222 | % % |
| 223 | % % |
| 224 | % % |
| 225 | % A c q u i r e P i x e l C a c h e N e x u s % |
| 226 | % % |
| 227 | % % |
| 228 | % % |
| 229 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 230 | % |
| 231 | % AcquirePixelCacheNexus() allocates the NexusInfo structure. |
| 232 | % |
| 233 | % The format of the AcquirePixelCacheNexus method is: |
| 234 | % |
| 235 | % NexusInfo **AcquirePixelCacheNexus(const unsigned long number_threads) |
| 236 | % |
| 237 | % A description of each parameter follows: |
| 238 | % |
| 239 | % o number_threads: the number of nexus threads. |
| 240 | % |
| 241 | */ |
| 242 | MagickExport NexusInfo **AcquirePixelCacheNexus( |
| 243 | const unsigned long number_threads) |
| 244 | { |
| 245 | register long |
| 246 | i; |
| 247 | |
| 248 | NexusInfo |
| 249 | **nexus_info; |
| 250 | |
| 251 | nexus_info=(NexusInfo **) AcquireAlignedMemory(number_threads, |
| 252 | sizeof(*nexus_info)); |
| 253 | if (nexus_info == (NexusInfo **) NULL) |
| 254 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 255 | for (i=0; i < (long) number_threads; i++) |
| 256 | { |
| 257 | nexus_info[i]=(NexusInfo *) AcquireAlignedMemory(1,sizeof(**nexus_info)); |
| 258 | if (nexus_info[i] == (NexusInfo *) NULL) |
| 259 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 260 | (void) ResetMagickMemory(nexus_info[i],0,sizeof(*nexus_info[i])); |
| 261 | nexus_info[i]->signature=MagickSignature; |
| 262 | } |
| 263 | return(nexus_info); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 268 | % % |
| 269 | % % |
| 270 | % % |
| 271 | + C l i p P i x e l C a c h e N e x u s % |
| 272 | % % |
| 273 | % % |
| 274 | % % |
| 275 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 276 | % |
| 277 | % ClipPixelCacheNexus() clips the cache nexus as defined by the image clip |
| 278 | % mask. The method returns MagickTrue if the pixel region is clipped, |
| 279 | % otherwise MagickFalse. |
| 280 | % |
| 281 | % The format of the ClipPixelCacheNexus() method is: |
| 282 | % |
| 283 | % MagickBooleanType ClipPixelCacheNexus(Image *image,NexusInfo *nexus_info, |
| 284 | % ExceptionInfo *exception) |
| 285 | % |
| 286 | % A description of each parameter follows: |
| 287 | % |
| 288 | % o image: the image. |
| 289 | % |
| 290 | % o nexus_info: the cache nexus to clip. |
| 291 | % |
| 292 | % o exception: return any errors or warnings in this structure. |
| 293 | % |
| 294 | */ |
| 295 | static MagickBooleanType ClipPixelCacheNexus(Image *image, |
| 296 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 297 | { |
| 298 | CacheInfo |
| 299 | *cache_info; |
| 300 | |
| 301 | MagickSizeType |
| 302 | number_pixels; |
| 303 | |
| 304 | NexusInfo |
| 305 | **clip_nexus, |
| 306 | **image_nexus; |
| 307 | |
| 308 | register const PixelPacket |
| 309 | *__restrict r; |
| 310 | |
| 311 | register IndexPacket |
| 312 | *__restrict nexus_indexes, |
| 313 | *__restrict indexes; |
| 314 | |
| 315 | register long |
| 316 | i; |
| 317 | |
| 318 | register PixelPacket |
| 319 | *__restrict p, |
| 320 | *__restrict q; |
| 321 | |
| 322 | /* |
| 323 | Apply clip mask. |
| 324 | */ |
| 325 | if (image->debug != MagickFalse) |
| 326 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 327 | if (image->clip_mask == (Image *) NULL) |
| 328 | return(MagickFalse); |
| 329 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickTrue,exception); |
| 330 | if (cache_info == (Cache) NULL) |
| 331 | return(MagickFalse); |
| 332 | image_nexus=AcquirePixelCacheNexus(1); |
| 333 | clip_nexus=AcquirePixelCacheNexus(1); |
| 334 | if ((image_nexus == (NexusInfo **) NULL) || |
| 335 | (clip_nexus == (NexusInfo **) NULL)) |
| 336 | ThrowBinaryException(CacheError,"UnableToGetCacheNexus",image->filename); |
| 337 | p=GetAuthenticPixelCacheNexus(image,nexus_info->region.x,nexus_info->region.y, |
| 338 | nexus_info->region.width,nexus_info->region.height,image_nexus[0], |
| 339 | exception); |
| 340 | indexes=GetPixelCacheNexusIndexes(image->cache,image_nexus[0]); |
| 341 | q=nexus_info->pixels; |
| 342 | nexus_indexes=nexus_info->indexes; |
| 343 | r=GetVirtualPixelsFromNexus(image->clip_mask,MaskVirtualPixelMethod, |
| 344 | nexus_info->region.x,nexus_info->region.y,nexus_info->region.width, |
| 345 | nexus_info->region.height,clip_nexus[0],exception); |
| 346 | number_pixels=(MagickSizeType) nexus_info->region.width* |
| 347 | nexus_info->region.height; |
| 348 | for (i=0; i < (long) number_pixels; i++) |
| 349 | { |
| 350 | if ((p == (PixelPacket *) NULL) || (r == (const PixelPacket *) NULL)) |
| 351 | break; |
| 352 | if (PixelIntensityToQuantum(r) > ((Quantum) QuantumRange/2)) |
| 353 | { |
| 354 | q->red=p->red; |
| 355 | q->green=p->green; |
| 356 | q->blue=p->blue; |
| 357 | q->opacity=p->opacity; |
| 358 | if (cache_info->active_index_channel != MagickFalse) |
| 359 | nexus_indexes[i]=indexes[i]; |
| 360 | } |
| 361 | p++; |
| 362 | q++; |
| 363 | r++; |
| 364 | } |
| 365 | clip_nexus=DestroyPixelCacheNexus(clip_nexus,1); |
| 366 | image_nexus=DestroyPixelCacheNexus(image_nexus,1); |
| 367 | if (i < (long) number_pixels) |
| 368 | return(MagickFalse); |
| 369 | return(MagickTrue); |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 374 | % % |
| 375 | % % |
| 376 | % % |
| 377 | + C l o n e P i x e l C a c h e % |
| 378 | % % |
| 379 | % % |
| 380 | % % |
| 381 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 382 | % |
| 383 | % ClonePixelCache() clones a pixel cache. |
| 384 | % |
| 385 | % The format of the ClonePixelCache() method is: |
| 386 | % |
| 387 | % Cache ClonePixelCache(const Cache cache) |
| 388 | % |
| 389 | % A description of each parameter follows: |
| 390 | % |
| 391 | % o cache: the pixel cache. |
| 392 | % |
| 393 | */ |
| 394 | MagickExport Cache ClonePixelCache(const Cache cache) |
| 395 | { |
| 396 | CacheInfo |
| 397 | *clone_info; |
| 398 | |
| 399 | const CacheInfo |
| 400 | *cache_info; |
| 401 | |
| 402 | assert(cache != (const Cache) NULL); |
| 403 | cache_info=(const CacheInfo *) cache; |
| 404 | assert(cache_info->signature == MagickSignature); |
| 405 | if (cache_info->debug != MagickFalse) |
| 406 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 407 | cache_info->filename); |
| 408 | clone_info=(CacheInfo *) AcquirePixelCache(cache_info->number_threads); |
| 409 | if (clone_info == (Cache) NULL) |
| 410 | return((Cache) NULL); |
| 411 | clone_info->virtual_pixel_method=cache_info->virtual_pixel_method; |
| 412 | return((Cache ) clone_info); |
| 413 | } |
| 414 | |
| 415 | /* |
| 416 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 417 | % % |
| 418 | % % |
| 419 | % % |
| 420 | + C l o n e P i x e l C a c h e N e x u s % |
| 421 | % % |
| 422 | % % |
| 423 | % % |
| 424 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 425 | % |
| 426 | % ClonePixelCacheNexus() clones the source cache nexus to the destination |
| 427 | % nexus. |
| 428 | % |
| 429 | % The format of the ClonePixelCacheNexus() method is: |
| 430 | % |
| 431 | % MagickBooleanType ClonePixelCacheNexus(CacheInfo *destination, |
| 432 | % CacheInfo *source,ExceptionInfo *exception) |
| 433 | % |
| 434 | % A description of each parameter follows: |
| 435 | % |
| 436 | % o destination: the destination cache nexus. |
| 437 | % |
| 438 | % o source: the source cache nexus. |
| 439 | % |
| 440 | % o exception: return any errors or warnings in this structure. |
| 441 | % |
| 442 | */ |
| 443 | |
| 444 | static inline MagickBooleanType AcquireCacheNexusPixels(CacheInfo *cache_info, |
| 445 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 446 | { |
| 447 | if (nexus_info->length != (MagickSizeType) ((size_t) nexus_info->length)) |
| 448 | return(MagickFalse); |
| 449 | nexus_info->mapped=MagickFalse; |
| 450 | nexus_info->cache=(PixelPacket *) AcquireMagickMemory((size_t) |
| 451 | nexus_info->length); |
| 452 | if (nexus_info->cache == (PixelPacket *) NULL) |
| 453 | { |
| 454 | nexus_info->mapped=MagickTrue; |
| 455 | nexus_info->cache=(PixelPacket *) MapBlob(-1,IOMode,0,(size_t) |
| 456 | nexus_info->length); |
| 457 | } |
| 458 | if (nexus_info->cache == (PixelPacket *) NULL) |
| 459 | { |
| 460 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 461 | ResourceLimitError,"MemoryAllocationFailed","`%s'", |
| 462 | cache_info->filename); |
| 463 | return(MagickFalse); |
| 464 | } |
| 465 | return(MagickTrue); |
| 466 | } |
| 467 | |
| 468 | static MagickBooleanType ClonePixelCacheNexus(CacheInfo *destination, |
| 469 | CacheInfo *source,ExceptionInfo *exception) |
| 470 | { |
| 471 | MagickBooleanType |
| 472 | status; |
| 473 | |
| 474 | MagickSizeType |
| 475 | number_pixels; |
| 476 | |
| 477 | register long |
| 478 | i; |
| 479 | |
| 480 | register const NexusInfo |
| 481 | *p; |
| 482 | |
| 483 | register NexusInfo |
| 484 | *q; |
| 485 | |
| 486 | status=MagickTrue; |
| 487 | for (i=0; i < (long) source->number_threads; i++) |
| 488 | { |
| 489 | p=source->nexus_info[i]; |
| 490 | q=destination->nexus_info[i]; |
| 491 | q->mapped=p->mapped; |
| 492 | q->region=p->region; |
| 493 | q->length=p->length; |
| 494 | q->cache=p->cache; |
| 495 | q->pixels=p->pixels; |
| 496 | q->indexes=p->indexes; |
| 497 | if (p->cache != (PixelPacket *) NULL) |
| 498 | { |
| 499 | status=AcquireCacheNexusPixels(source,q,exception); |
| 500 | if (status != MagickFalse) |
| 501 | { |
| 502 | (void) CopyMagickMemory(q->cache,p->cache,(size_t) p->length); |
| 503 | q->pixels=q->cache; |
| 504 | q->indexes=(IndexPacket *) NULL; |
| 505 | number_pixels=(MagickSizeType) q->region.width*q->region.height; |
| 506 | if (p->indexes != (IndexPacket *) NULL) |
| 507 | q->indexes=(IndexPacket *) (q->pixels+number_pixels); |
| 508 | } |
| 509 | } |
| 510 | } |
| 511 | return(status); |
| 512 | } |
| 513 | |
| 514 | /* |
| 515 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 516 | % % |
| 517 | % % |
| 518 | % % |
| 519 | + C l o n e P i x e l C a c h e P i x e l s % |
| 520 | % % |
| 521 | % % |
| 522 | % % |
| 523 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % |
| 524 | % ClonePixelCachePixels() clones the source pixel cache to the destination |
| 525 | % cache. |
| 526 | % |
| 527 | % The format of the ClonePixelCachePixels() method is: |
| 528 | % |
| 529 | % MagickBooleanType ClonePixelCachePixels(CacheInfo *cache_info, |
| 530 | % CacheInfo *source_info,ExceptionInfo *exception) |
| 531 | % |
| 532 | % A description of each parameter follows: |
| 533 | % |
| 534 | % o cache_info: the pixel cache. |
| 535 | % |
| 536 | % o source_info: the source pixel cache. |
| 537 | % |
| 538 | % o exception: return any errors or warnings in this structure. |
| 539 | % |
| 540 | */ |
| 541 | |
| 542 | static MagickBooleanType ClosePixelCacheOnDisk(CacheInfo *cache_info) |
| 543 | { |
| 544 | int |
| 545 | status; |
| 546 | |
| 547 | AcquireSemaphoreInfo(&cache_info->disk_semaphore); |
| 548 | status=close(cache_info->file); |
| 549 | cache_info->file=(-1); |
| 550 | RelinquishMagickResource(FileResource,1); |
| 551 | RelinquishSemaphoreInfo(cache_info->disk_semaphore); |
| 552 | return(status == -1 ? MagickFalse : MagickTrue); |
| 553 | } |
| 554 | |
| 555 | static void LimitPixelCacheDescriptors(void) |
| 556 | { |
| 557 | register CacheInfo |
| 558 | *p, |
| 559 | *q; |
| 560 | |
| 561 | /* |
| 562 | Limit # of open file descriptors. |
| 563 | */ |
| 564 | if (GetMagickResource(FileResource) < GetMagickResourceLimit(FileResource)) |
| 565 | return; |
| 566 | AcquireSemaphoreInfo(&cache_semaphore); |
| 567 | if (cache_resources == (SplayTreeInfo *) NULL) |
| 568 | { |
| 569 | RelinquishSemaphoreInfo(cache_semaphore); |
| 570 | return; |
| 571 | } |
| 572 | ResetSplayTreeIterator(cache_resources); |
| 573 | p=(CacheInfo *) GetNextKeyInSplayTree(cache_resources); |
| 574 | while (p != (CacheInfo *) NULL) |
| 575 | { |
| 576 | if ((p->type == DiskCache) && (p->file != -1)) |
| 577 | { |
| 578 | if (IsMagickThreadEqual(p->id) != MagickFalse) |
| 579 | break; |
| 580 | } |
| 581 | p=(CacheInfo *) GetNextKeyInSplayTree(cache_resources); |
| 582 | } |
| 583 | for (q=p; p != (CacheInfo *) NULL; ) |
| 584 | { |
| 585 | if ((p->type == DiskCache) && (p->file != -1) && |
| 586 | (p->timestamp < q->timestamp)) |
| 587 | { |
| 588 | if (IsMagickThreadEqual(p->id) != MagickFalse) |
| 589 | q=p; |
| 590 | } |
| 591 | p=(CacheInfo *) GetNextKeyInSplayTree(cache_resources); |
| 592 | } |
| 593 | if (q != (CacheInfo *) NULL) |
| 594 | (void) ClosePixelCacheOnDisk(q); /* relinquish least recently used cache */ |
| 595 | RelinquishSemaphoreInfo(cache_semaphore); |
| 596 | } |
| 597 | |
| 598 | static inline MagickSizeType MagickMax(const MagickSizeType x, |
| 599 | const MagickSizeType y) |
| 600 | { |
| 601 | if (x > y) |
| 602 | return(x); |
| 603 | return(y); |
| 604 | } |
| 605 | |
| 606 | static inline MagickSizeType MagickMin(const MagickSizeType x, |
| 607 | const MagickSizeType y) |
| 608 | { |
| 609 | if (x < y) |
| 610 | return(x); |
| 611 | return(y); |
| 612 | } |
| 613 | |
| 614 | static MagickBooleanType OpenPixelCacheOnDisk(CacheInfo *cache_info, |
| 615 | const MapMode mode) |
| 616 | { |
| 617 | int |
| 618 | file; |
| 619 | |
| 620 | /* |
| 621 | Open pixel cache on disk. |
| 622 | */ |
| 623 | AcquireSemaphoreInfo(&cache_info->disk_semaphore); |
| 624 | if (cache_info->file != -1) |
| 625 | { |
| 626 | RelinquishSemaphoreInfo(cache_info->disk_semaphore); |
| 627 | return(MagickTrue); /* cache already open */ |
| 628 | } |
| 629 | LimitPixelCacheDescriptors(); |
| 630 | if (*cache_info->cache_filename == '\0') |
| 631 | file=AcquireUniqueFileResource(cache_info->cache_filename); |
| 632 | else |
| 633 | switch (mode) |
| 634 | { |
| 635 | case ReadMode: |
| 636 | { |
| 637 | file=open(cache_info->cache_filename,O_RDONLY | O_BINARY); |
| 638 | break; |
| 639 | } |
| 640 | case WriteMode: |
| 641 | { |
| 642 | file=open(cache_info->cache_filename,O_WRONLY | O_CREAT | O_BINARY | |
| 643 | O_EXCL,S_MODE); |
| 644 | if (file == -1) |
| 645 | file=open(cache_info->cache_filename,O_WRONLY | O_BINARY,S_MODE); |
| 646 | break; |
| 647 | } |
| 648 | case IOMode: |
| 649 | default: |
| 650 | { |
| 651 | file=open(cache_info->cache_filename,O_RDWR | O_CREAT | O_BINARY | |
| 652 | O_EXCL,S_MODE); |
| 653 | if (file == -1) |
| 654 | file=open(cache_info->cache_filename,O_RDWR | O_BINARY,S_MODE); |
| 655 | break; |
| 656 | } |
| 657 | } |
| 658 | if (file == -1) |
| 659 | { |
| 660 | RelinquishSemaphoreInfo(cache_info->disk_semaphore); |
| 661 | return(MagickFalse); |
| 662 | } |
| 663 | (void) AcquireMagickResource(FileResource,1); |
| 664 | cache_info->file=file; |
| 665 | cache_info->timestamp=time(0); |
| 666 | RelinquishSemaphoreInfo(cache_info->disk_semaphore); |
| 667 | return(MagickTrue); |
| 668 | } |
| 669 | |
| 670 | static inline MagickOffsetType ReadPixelCacheRegion(CacheInfo *cache_info, |
| 671 | const MagickOffsetType offset,const MagickSizeType length, |
| 672 | unsigned char *__restrict buffer) |
| 673 | { |
| 674 | register MagickOffsetType |
| 675 | i; |
| 676 | |
| 677 | ssize_t |
| 678 | count; |
| 679 | |
| 680 | #if !defined(MAGICKCORE_HAVE_PREAD) |
| 681 | (void) LockSemaphoreInfo(cache_info->disk_semaphore); |
| 682 | cache_info->timestamp=time(0); |
| 683 | if (MagickSeek(cache_info->file,offset,SEEK_SET) < 0) |
| 684 | { |
| 685 | (void) UnlockSemaphoreInfo(cache_info->disk_semaphore); |
| 686 | return((MagickOffsetType) -1); |
| 687 | } |
| 688 | #endif |
| 689 | count=0; |
| 690 | for (i=0; i < (MagickOffsetType) length; i+=count) |
| 691 | { |
| 692 | #if !defined(MAGICKCORE_HAVE_PREAD) |
| 693 | count=read(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 694 | (MagickSizeType) SSIZE_MAX)); |
| 695 | #else |
| 696 | count=pread(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 697 | (MagickSizeType) SSIZE_MAX),(off_t) (offset+i)); |
| 698 | #endif |
| 699 | if (count > 0) |
| 700 | continue; |
| 701 | count=0; |
| 702 | if (errno != EINTR) |
| 703 | { |
| 704 | i=(-1); |
| 705 | break; |
| 706 | } |
| 707 | } |
| 708 | #if !defined(MAGICKCORE_HAVE_PREAD) |
| 709 | (void) UnlockSemaphoreInfo(cache_info->disk_semaphore); |
| 710 | #endif |
| 711 | return(i); |
| 712 | } |
| 713 | |
| 714 | static inline MagickOffsetType WritePixelCacheRegion(CacheInfo *cache_info, |
| 715 | const MagickOffsetType offset,const MagickSizeType length, |
| 716 | const unsigned char *__restrict buffer) |
| 717 | { |
| 718 | register MagickOffsetType |
| 719 | i; |
| 720 | |
| 721 | ssize_t |
| 722 | count; |
| 723 | |
| 724 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
| 725 | (void) LockSemaphoreInfo(cache_info->disk_semaphore); |
| 726 | cache_info->timestamp=time(0); |
| 727 | if (MagickSeek(cache_info->file,offset,SEEK_SET) < 0) |
| 728 | { |
| 729 | (void) UnlockSemaphoreInfo(cache_info->disk_semaphore); |
| 730 | return((MagickOffsetType) -1); |
| 731 | } |
| 732 | #endif |
| 733 | count=0; |
| 734 | for (i=0; i < (MagickOffsetType) length; i+=count) |
| 735 | { |
| 736 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
| 737 | count=write(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 738 | (MagickSizeType) SSIZE_MAX)); |
| 739 | #else |
| 740 | count=pwrite(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 741 | (MagickSizeType) SSIZE_MAX),(off_t) (offset+i)); |
| 742 | #endif |
| 743 | if (count > 0) |
| 744 | continue; |
| 745 | count=0; |
| 746 | if (errno != EINTR) |
| 747 | { |
| 748 | i=(-1); |
| 749 | break; |
| 750 | } |
| 751 | } |
| 752 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
| 753 | (void) UnlockSemaphoreInfo(cache_info->disk_semaphore); |
| 754 | #endif |
| 755 | return(i); |
| 756 | } |
| 757 | |
| 758 | static MagickBooleanType CloneDiskToDiskPixelCache(CacheInfo *clone_info, |
| 759 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 760 | { |
| 761 | MagickOffsetType |
| 762 | count, |
| 763 | offset, |
| 764 | source_offset; |
| 765 | |
| 766 | MagickSizeType |
| 767 | length; |
| 768 | |
| 769 | register long |
| 770 | y; |
| 771 | |
| 772 | register PixelPacket |
| 773 | *__restrict pixels; |
| 774 | |
| 775 | unsigned long |
| 776 | columns, |
| 777 | rows; |
| 778 | |
| 779 | if (cache_info->debug != MagickFalse) |
| 780 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"disk => disk"); |
| 781 | if (OpenPixelCacheOnDisk(clone_info,IOMode) == MagickFalse) |
| 782 | { |
| 783 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 784 | clone_info->cache_filename); |
| 785 | return(MagickFalse); |
| 786 | } |
| 787 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 788 | { |
| 789 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 790 | cache_info->cache_filename); |
| 791 | return(MagickFalse); |
| 792 | } |
| 793 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 794 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 795 | if ((clone_info->active_index_channel != MagickFalse) && |
| 796 | (cache_info->active_index_channel != MagickFalse)) |
| 797 | { |
| 798 | register IndexPacket |
| 799 | *indexes; |
| 800 | |
| 801 | /* |
| 802 | Clone cache indexes. |
| 803 | */ |
| 804 | length=MagickMax(clone_info->columns,cache_info->columns)* |
| 805 | sizeof(*indexes); |
| 806 | indexes=(IndexPacket *) AcquireMagickMemory((size_t) length); |
| 807 | if (indexes == (IndexPacket *) NULL) |
| 808 | { |
| 809 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 810 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 811 | return(MagickFalse); |
| 812 | } |
| 813 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 814 | length=columns*sizeof(*indexes); |
| 815 | source_offset=(MagickOffsetType) cache_info->columns*cache_info->rows* |
| 816 | sizeof(*pixels)+cache_info->columns*rows*sizeof(*indexes); |
| 817 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 818 | sizeof(*pixels)+clone_info->columns*rows*sizeof(*indexes); |
| 819 | for (y=0; y < (long) rows; y++) |
| 820 | { |
| 821 | source_offset-=cache_info->columns*sizeof(*indexes); |
| 822 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+source_offset, |
| 823 | length,(unsigned char *) indexes); |
| 824 | if ((MagickSizeType) count != length) |
| 825 | break; |
| 826 | offset-=clone_info->columns*sizeof(*indexes); |
| 827 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 828 | (unsigned char *) indexes); |
| 829 | if ((MagickSizeType) count != length) |
| 830 | break; |
| 831 | } |
| 832 | if (y < (long) rows) |
| 833 | { |
| 834 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 835 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 836 | cache_info->cache_filename); |
| 837 | return(MagickFalse); |
| 838 | } |
| 839 | if (clone_info->columns > cache_info->columns) |
| 840 | { |
| 841 | length=(clone_info->columns-cache_info->columns)*sizeof(*indexes); |
| 842 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 843 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 844 | sizeof(*pixels)+(clone_info->columns*rows+columns)*sizeof(*indexes); |
| 845 | for (y=0; y < (long) rows; y++) |
| 846 | { |
| 847 | offset-=clone_info->columns*sizeof(*indexes); |
| 848 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset, |
| 849 | length,(unsigned char *) indexes); |
| 850 | if ((MagickSizeType) count != length) |
| 851 | break; |
| 852 | } |
| 853 | if (y < (long) rows) |
| 854 | { |
| 855 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 856 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 857 | cache_info->cache_filename); |
| 858 | return(MagickFalse); |
| 859 | } |
| 860 | } |
| 861 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 862 | } |
| 863 | /* |
| 864 | Clone cache pixels. |
| 865 | */ |
| 866 | length=MagickMax(clone_info->columns,cache_info->columns)*sizeof(*pixels); |
| 867 | pixels=(PixelPacket *) AcquireMagickMemory((size_t) length); |
| 868 | if (pixels == (PixelPacket *) NULL) |
| 869 | { |
| 870 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 871 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 872 | return(MagickFalse); |
| 873 | } |
| 874 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 875 | length=columns*sizeof(*pixels); |
| 876 | source_offset=(MagickOffsetType) cache_info->columns*rows*sizeof(*pixels); |
| 877 | offset=(MagickOffsetType) clone_info->columns*rows*sizeof(*pixels); |
| 878 | for (y=0; y < (long) rows; y++) |
| 879 | { |
| 880 | source_offset-=cache_info->columns*sizeof(*pixels); |
| 881 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+source_offset, |
| 882 | length,(unsigned char *) pixels); |
| 883 | if ((MagickSizeType) count != length) |
| 884 | break; |
| 885 | offset-=clone_info->columns*sizeof(*pixels); |
| 886 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 887 | (unsigned char *) pixels); |
| 888 | if ((MagickSizeType) count != length) |
| 889 | break; |
| 890 | } |
| 891 | if (y < (long) rows) |
| 892 | { |
| 893 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 894 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 895 | cache_info->cache_filename); |
| 896 | return(MagickFalse); |
| 897 | } |
| 898 | if (clone_info->columns > cache_info->columns) |
| 899 | { |
| 900 | offset=(MagickOffsetType) (clone_info->columns*rows+columns)* |
| 901 | sizeof(*pixels); |
| 902 | length=(clone_info->columns-cache_info->columns)*sizeof(*pixels); |
| 903 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 904 | for (y=0; y < (long) rows; y++) |
| 905 | { |
| 906 | offset-=clone_info->columns*sizeof(*pixels); |
| 907 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 908 | (unsigned char *) pixels); |
| 909 | if ((MagickSizeType) count != length) |
| 910 | break; |
| 911 | } |
| 912 | if (y < (long) rows) |
| 913 | { |
| 914 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 915 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 916 | cache_info->cache_filename); |
| 917 | return(MagickFalse); |
| 918 | } |
| 919 | } |
| 920 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 921 | return(MagickTrue); |
| 922 | } |
| 923 | |
| 924 | static MagickBooleanType CloneDiskToMemoryPixelCache(CacheInfo *clone_info, |
| 925 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 926 | { |
| 927 | MagickOffsetType |
| 928 | count, |
| 929 | offset; |
| 930 | |
| 931 | MagickSizeType |
| 932 | length; |
| 933 | |
| 934 | register long |
| 935 | y; |
| 936 | |
| 937 | register PixelPacket |
| 938 | *__restrict pixels, |
| 939 | *__restrict q; |
| 940 | |
| 941 | unsigned long |
| 942 | columns, |
| 943 | rows; |
| 944 | |
| 945 | if (cache_info->debug != MagickFalse) |
| 946 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"disk => memory"); |
| 947 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 948 | { |
| 949 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 950 | cache_info->cache_filename); |
| 951 | return(MagickFalse); |
| 952 | } |
| 953 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 954 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 955 | if ((clone_info->active_index_channel != MagickFalse) && |
| 956 | (cache_info->active_index_channel != MagickFalse)) |
| 957 | { |
| 958 | register IndexPacket |
| 959 | *indexes, |
| 960 | *q; |
| 961 | |
| 962 | /* |
| 963 | Clone cache indexes. |
| 964 | */ |
| 965 | length=MagickMax(clone_info->columns,cache_info->columns)* |
| 966 | sizeof(*indexes); |
| 967 | indexes=(IndexPacket *) AcquireMagickMemory((size_t) length); |
| 968 | if (indexes == (IndexPacket *) NULL) |
| 969 | { |
| 970 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 971 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 972 | return(MagickFalse); |
| 973 | } |
| 974 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 975 | length=columns*sizeof(IndexPacket); |
| 976 | offset=(MagickOffsetType) cache_info->columns*cache_info->rows* |
| 977 | sizeof(*pixels)+cache_info->columns*rows*sizeof(*indexes); |
| 978 | q=clone_info->indexes+clone_info->columns*rows; |
| 979 | for (y=0; y < (long) rows; y++) |
| 980 | { |
| 981 | offset-=cache_info->columns*sizeof(IndexPacket); |
| 982 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+offset, |
| 983 | length,(unsigned char *) indexes); |
| 984 | if ((MagickSizeType) count != length) |
| 985 | break; |
| 986 | q-=clone_info->columns; |
| 987 | (void) CopyMagickMemory(q,indexes,(size_t) length); |
| 988 | if ((MagickSizeType) count != length) |
| 989 | break; |
| 990 | } |
| 991 | if (y < (long) rows) |
| 992 | { |
| 993 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 994 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 995 | cache_info->cache_filename); |
| 996 | return(MagickFalse); |
| 997 | } |
| 998 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 999 | } |
| 1000 | /* |
| 1001 | Clone cache pixels. |
| 1002 | */ |
| 1003 | length=MagickMax(clone_info->columns,cache_info->columns)*sizeof(*pixels); |
| 1004 | pixels=(PixelPacket *) AcquireMagickMemory((size_t) length); |
| 1005 | if (pixels == (PixelPacket *) NULL) |
| 1006 | { |
| 1007 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 1008 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 1009 | return(MagickFalse); |
| 1010 | } |
| 1011 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 1012 | length=columns*sizeof(*pixels); |
| 1013 | offset=(MagickOffsetType) cache_info->columns*rows*sizeof(*pixels); |
| 1014 | q=clone_info->pixels+clone_info->columns*rows; |
| 1015 | for (y=0; y < (long) rows; y++) |
| 1016 | { |
| 1017 | offset-=cache_info->columns*sizeof(*pixels); |
| 1018 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+offset,length, |
| 1019 | (unsigned char *) pixels); |
| 1020 | if ((MagickSizeType) count != length) |
| 1021 | break; |
| 1022 | q-=clone_info->columns; |
| 1023 | (void) CopyMagickMemory(q,pixels,(size_t) length); |
| 1024 | } |
| 1025 | if (y < (long) rows) |
| 1026 | { |
| 1027 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1028 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1029 | cache_info->cache_filename); |
| 1030 | return(MagickFalse); |
| 1031 | } |
| 1032 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1033 | return(MagickTrue); |
| 1034 | } |
| 1035 | |
| 1036 | static MagickBooleanType CloneMemoryToDiskPixelCache(CacheInfo *clone_info, |
| 1037 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 1038 | { |
| 1039 | MagickOffsetType |
| 1040 | count, |
| 1041 | offset; |
| 1042 | |
| 1043 | MagickSizeType |
| 1044 | length; |
| 1045 | |
| 1046 | register long |
| 1047 | y; |
| 1048 | |
| 1049 | register PixelPacket |
| 1050 | *__restrict p, |
| 1051 | *__restrict pixels; |
| 1052 | |
| 1053 | unsigned long |
| 1054 | columns, |
| 1055 | rows; |
| 1056 | |
| 1057 | if (cache_info->debug != MagickFalse) |
| 1058 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"memory => disk"); |
| 1059 | if (OpenPixelCacheOnDisk(clone_info,IOMode) == MagickFalse) |
| 1060 | { |
| 1061 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 1062 | clone_info->cache_filename); |
| 1063 | return(MagickFalse); |
| 1064 | } |
| 1065 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 1066 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 1067 | if ((clone_info->active_index_channel != MagickFalse) && |
| 1068 | (cache_info->active_index_channel != MagickFalse)) |
| 1069 | { |
| 1070 | register IndexPacket |
| 1071 | *p, |
| 1072 | *indexes; |
| 1073 | |
| 1074 | /* |
| 1075 | Clone cache indexes. |
| 1076 | */ |
| 1077 | length=MagickMax(clone_info->columns,cache_info->columns)* |
| 1078 | sizeof(*indexes); |
| 1079 | indexes=(IndexPacket *) AcquireMagickMemory((size_t) length); |
| 1080 | if (indexes == (IndexPacket *) NULL) |
| 1081 | { |
| 1082 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 1083 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 1084 | return(MagickFalse); |
| 1085 | } |
| 1086 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 1087 | length=columns*sizeof(*indexes); |
| 1088 | p=cache_info->indexes+cache_info->columns*rows; |
| 1089 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 1090 | sizeof(*pixels)+clone_info->columns*rows*sizeof(*indexes); |
| 1091 | for (y=0; y < (long) rows; y++) |
| 1092 | { |
| 1093 | p-=cache_info->columns; |
| 1094 | (void) CopyMagickMemory(indexes,p,(size_t) length); |
| 1095 | offset-=clone_info->columns*sizeof(*indexes); |
| 1096 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 1097 | (unsigned char *) indexes); |
| 1098 | if ((MagickSizeType) count != length) |
| 1099 | break; |
| 1100 | } |
| 1101 | if (y < (long) rows) |
| 1102 | { |
| 1103 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1104 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1105 | cache_info->cache_filename); |
| 1106 | return(MagickFalse); |
| 1107 | } |
| 1108 | if (clone_info->columns > cache_info->columns) |
| 1109 | { |
| 1110 | length=(clone_info->columns-cache_info->columns)*sizeof(*indexes); |
| 1111 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 1112 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 1113 | sizeof(*pixels)+(clone_info->columns*rows+columns)*sizeof(*indexes); |
| 1114 | for (y=0; y < (long) rows; y++) |
| 1115 | { |
| 1116 | offset-=clone_info->columns*sizeof(*indexes); |
| 1117 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset, |
| 1118 | length,(unsigned char *) indexes); |
| 1119 | if ((MagickSizeType) count != length) |
| 1120 | break; |
| 1121 | } |
| 1122 | if (y < (long) rows) |
| 1123 | { |
| 1124 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1125 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1126 | cache_info->cache_filename); |
| 1127 | return(MagickFalse); |
| 1128 | } |
| 1129 | } |
| 1130 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1131 | } |
| 1132 | /* |
| 1133 | Clone cache pixels. |
| 1134 | */ |
| 1135 | length=MagickMax(clone_info->columns,cache_info->columns)*sizeof(*pixels); |
| 1136 | pixels=(PixelPacket *) AcquireMagickMemory((size_t) length); |
| 1137 | if (pixels == (PixelPacket *) NULL) |
| 1138 | { |
| 1139 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 1140 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 1141 | return(MagickFalse); |
| 1142 | } |
| 1143 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 1144 | length=columns*sizeof(*pixels); |
| 1145 | p=cache_info->pixels+cache_info->columns*rows; |
| 1146 | offset=(MagickOffsetType) clone_info->columns*rows*sizeof(*pixels); |
| 1147 | for (y=0; y < (long) rows; y++) |
| 1148 | { |
| 1149 | p-=cache_info->columns; |
| 1150 | (void) CopyMagickMemory(pixels,p,(size_t) length); |
| 1151 | offset-=clone_info->columns*sizeof(*pixels); |
| 1152 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 1153 | (unsigned char *) pixels); |
| 1154 | if ((MagickSizeType) count != length) |
| 1155 | break; |
| 1156 | } |
| 1157 | if (y < (long) rows) |
| 1158 | { |
| 1159 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1160 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1161 | cache_info->cache_filename); |
| 1162 | return(MagickFalse); |
| 1163 | } |
| 1164 | if (clone_info->columns > cache_info->columns) |
| 1165 | { |
| 1166 | offset=(MagickOffsetType) (clone_info->columns*rows+columns)* |
| 1167 | sizeof(*pixels); |
| 1168 | length=(clone_info->columns-cache_info->columns)*sizeof(*pixels); |
| 1169 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 1170 | for (y=0; y < (long) rows; y++) |
| 1171 | { |
| 1172 | offset-=clone_info->columns*sizeof(*pixels); |
| 1173 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 1174 | (unsigned char *) pixels); |
| 1175 | if ((MagickSizeType) count != length) |
| 1176 | break; |
| 1177 | } |
| 1178 | if (y < (long) rows) |
| 1179 | { |
| 1180 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1181 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1182 | cache_info->cache_filename); |
| 1183 | return(MagickFalse); |
| 1184 | } |
| 1185 | } |
| 1186 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1187 | return(MagickTrue); |
| 1188 | } |
| 1189 | |
| 1190 | static MagickBooleanType CloneMemoryToMemoryPixelCache(CacheInfo *clone_info, |
| 1191 | CacheInfo *cache_info,ExceptionInfo *magick_unused(exception)) |
| 1192 | { |
| 1193 | register long |
| 1194 | y; |
| 1195 | |
| 1196 | register PixelPacket |
| 1197 | *__restrict pixels, |
| 1198 | *__restrict source_pixels; |
| 1199 | |
| 1200 | size_t |
| 1201 | length; |
| 1202 | |
| 1203 | unsigned long |
| 1204 | columns, |
| 1205 | rows; |
| 1206 | |
| 1207 | if (cache_info->debug != MagickFalse) |
| 1208 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"memory => memory"); |
| 1209 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 1210 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 1211 | if ((clone_info->active_index_channel != MagickFalse) && |
| 1212 | (cache_info->active_index_channel != MagickFalse)) |
| 1213 | { |
| 1214 | register IndexPacket |
| 1215 | *indexes, |
| 1216 | *source_indexes; |
| 1217 | |
| 1218 | /* |
| 1219 | Clone cache indexes. |
| 1220 | */ |
| 1221 | length=columns*sizeof(*indexes); |
| 1222 | if (clone_info->columns == cache_info->columns) |
| 1223 | (void) CopyMagickMemory(clone_info->indexes,cache_info->indexes, |
| 1224 | length*rows); |
| 1225 | else |
| 1226 | { |
| 1227 | source_indexes=cache_info->indexes+cache_info->columns*rows; |
| 1228 | indexes=clone_info->indexes+clone_info->columns*rows; |
| 1229 | for (y=0; y < (long) rows; y++) |
| 1230 | { |
| 1231 | source_indexes-=cache_info->columns; |
| 1232 | indexes-=clone_info->columns; |
| 1233 | (void) CopyMagickMemory(indexes,source_indexes,length); |
| 1234 | } |
| 1235 | if (clone_info->columns > cache_info->columns) |
| 1236 | { |
| 1237 | length=(clone_info->columns-cache_info->columns)* |
| 1238 | sizeof(*indexes); |
| 1239 | indexes=clone_info->indexes+clone_info->columns*rows+ |
| 1240 | cache_info->columns; |
| 1241 | for (y=0; y < (long) rows; y++) |
| 1242 | { |
| 1243 | indexes-=clone_info->columns; |
| 1244 | (void) ResetMagickMemory(indexes,0,length); |
| 1245 | } |
| 1246 | } |
| 1247 | } |
| 1248 | } |
| 1249 | /* |
| 1250 | Clone cache pixels. |
| 1251 | */ |
| 1252 | length=columns*sizeof(*pixels); |
| 1253 | if (clone_info->columns == cache_info->columns) |
| 1254 | (void) CopyMagickMemory(clone_info->pixels,cache_info->pixels,length*rows); |
| 1255 | else |
| 1256 | { |
| 1257 | source_pixels=cache_info->pixels+cache_info->columns*rows; |
| 1258 | pixels=clone_info->pixels+clone_info->columns*rows; |
| 1259 | for (y=0; y < (long) rows; y++) |
| 1260 | { |
| 1261 | source_pixels-=cache_info->columns; |
| 1262 | pixels-=clone_info->columns; |
| 1263 | (void) CopyMagickMemory(pixels,source_pixels,length); |
| 1264 | } |
| 1265 | if (clone_info->columns > cache_info->columns) |
| 1266 | { |
| 1267 | length=(clone_info->columns-cache_info->columns)*sizeof(*pixels); |
| 1268 | pixels=clone_info->pixels+clone_info->columns*rows+ |
| 1269 | cache_info->columns; |
| 1270 | for (y=0; y < (long) rows; y++) |
| 1271 | { |
| 1272 | pixels-=clone_info->columns; |
| 1273 | (void) ResetMagickMemory(pixels,0,length); |
| 1274 | } |
| 1275 | } |
| 1276 | } |
| 1277 | return(MagickTrue); |
| 1278 | } |
| 1279 | |
| 1280 | static MagickBooleanType ClonePixelCachePixels(CacheInfo *clone_info, |
| 1281 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 1282 | { |
| 1283 | if ((clone_info->type != DiskCache) && (cache_info->type != DiskCache)) |
| 1284 | return(CloneMemoryToMemoryPixelCache(clone_info,cache_info,exception)); |
| 1285 | if ((clone_info->type == DiskCache) && (cache_info->type == DiskCache)) |
| 1286 | return(CloneDiskToDiskPixelCache(clone_info,cache_info,exception)); |
| 1287 | if (cache_info->type == DiskCache) |
| 1288 | return(CloneDiskToMemoryPixelCache(clone_info,cache_info,exception)); |
| 1289 | return(CloneMemoryToDiskPixelCache(clone_info,cache_info,exception)); |
| 1290 | } |
| 1291 | |
| 1292 | /* |
| 1293 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1294 | % % |
| 1295 | % % |
| 1296 | % % |
| 1297 | + C l o n e P i x e l C a c h e M e t h o d s % |
| 1298 | % % |
| 1299 | % % |
| 1300 | % % |
| 1301 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1302 | % |
| 1303 | % ClonePixelCacheMethods() clones the pixel cache methods from one cache to |
| 1304 | % another. |
| 1305 | % |
| 1306 | % The format of the ClonePixelCacheMethods() method is: |
| 1307 | % |
| 1308 | % void ClonePixelCacheMethods(Cache clone,const Cache cache) |
| 1309 | % |
| 1310 | % A description of each parameter follows: |
| 1311 | % |
| 1312 | % o clone: Specifies a pointer to a Cache structure. |
| 1313 | % |
| 1314 | % o cache: the pixel cache. |
| 1315 | % |
| 1316 | */ |
| 1317 | MagickExport void ClonePixelCacheMethods(Cache clone,const Cache cache) |
| 1318 | { |
| 1319 | CacheInfo |
| 1320 | *cache_info, |
| 1321 | *source_info; |
| 1322 | |
| 1323 | assert(clone != (Cache) NULL); |
| 1324 | source_info=(CacheInfo *) clone; |
| 1325 | assert(source_info->signature == MagickSignature); |
| 1326 | if (source_info->debug != MagickFalse) |
| 1327 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 1328 | source_info->filename); |
| 1329 | assert(cache != (Cache) NULL); |
| 1330 | cache_info=(CacheInfo *) cache; |
| 1331 | assert(cache_info->signature == MagickSignature); |
| 1332 | source_info->methods=cache_info->methods; |
| 1333 | } |
| 1334 | |
| 1335 | /* |
| 1336 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1337 | % % |
| 1338 | % % |
| 1339 | % % |
| 1340 | + D e s t r o y I m a g e P i x e l C a c h e % |
| 1341 | % % |
| 1342 | % % |
| 1343 | % % |
| 1344 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1345 | % |
| 1346 | % DestroyImagePixelCache() deallocates memory associated with the pixel cache. |
| 1347 | % |
| 1348 | % The format of the DestroyImagePixelCache() method is: |
| 1349 | % |
| 1350 | % void DestroyImagePixelCache(Image *image) |
| 1351 | % |
| 1352 | % A description of each parameter follows: |
| 1353 | % |
| 1354 | % o image: the image. |
| 1355 | % |
| 1356 | */ |
| 1357 | static void DestroyImagePixelCache(Image *image) |
| 1358 | { |
| 1359 | assert(image != (Image *) NULL); |
| 1360 | assert(image->signature == MagickSignature); |
| 1361 | if (image->debug != MagickFalse) |
| 1362 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1363 | if (image->cache == (void *) NULL) |
| 1364 | return; |
| 1365 | image->cache=DestroyPixelCache(image->cache); |
| 1366 | } |
| 1367 | |
| 1368 | /* |
| 1369 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1370 | % % |
| 1371 | % % |
| 1372 | % % |
| 1373 | + D e s t r o y I m a g e P i x e l s % |
| 1374 | % % |
| 1375 | % % |
| 1376 | % % |
| 1377 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1378 | % |
| 1379 | % DestroyImagePixels() deallocates memory associated with the pixel cache. |
| 1380 | % |
| 1381 | % The format of the DestroyImagePixels() method is: |
| 1382 | % |
| 1383 | % void DestroyImagePixels(Image *image) |
| 1384 | % |
| 1385 | % A description of each parameter follows: |
| 1386 | % |
| 1387 | % o image: the image. |
| 1388 | % |
| 1389 | */ |
| 1390 | MagickExport void DestroyImagePixels(Image *image) |
| 1391 | { |
| 1392 | CacheInfo |
| 1393 | *cache_info; |
| 1394 | |
| 1395 | assert(image != (const Image *) NULL); |
| 1396 | assert(image->signature == MagickSignature); |
| 1397 | if (image->debug != MagickFalse) |
| 1398 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1399 | assert(image->cache != (Cache) NULL); |
| 1400 | cache_info=(CacheInfo *) image->cache; |
| 1401 | assert(cache_info->signature == MagickSignature); |
| 1402 | if (cache_info->methods.destroy_pixel_handler == (DestroyPixelHandler) NULL) |
| 1403 | return; |
| 1404 | cache_info->methods.destroy_pixel_handler(image); |
| 1405 | } |
| 1406 | |
| 1407 | /* |
| 1408 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1409 | % % |
| 1410 | % % |
| 1411 | % % |
| 1412 | + D e s t r o y P i x e l C a c h e % |
| 1413 | % % |
| 1414 | % % |
| 1415 | % % |
| 1416 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1417 | % |
| 1418 | % DestroyPixelCache() deallocates memory associated with the pixel cache. |
| 1419 | % |
| 1420 | % The format of the DestroyPixelCache() method is: |
| 1421 | % |
| 1422 | % Cache DestroyPixelCache(Cache cache) |
| 1423 | % |
| 1424 | % A description of each parameter follows: |
| 1425 | % |
| 1426 | % o cache: the pixel cache. |
| 1427 | % |
| 1428 | */ |
| 1429 | |
| 1430 | static inline void RelinquishPixelCachePixels(CacheInfo *cache_info) |
| 1431 | { |
| 1432 | switch (cache_info->type) |
| 1433 | { |
| 1434 | case MemoryCache: |
| 1435 | { |
| 1436 | if (cache_info->mapped == MagickFalse) |
| 1437 | cache_info->pixels=(PixelPacket *) RelinquishMagickMemory( |
| 1438 | cache_info->pixels); |
| 1439 | else |
| 1440 | cache_info->pixels=(PixelPacket *) UnmapBlob(cache_info->pixels, |
| 1441 | (size_t) cache_info->length); |
| 1442 | RelinquishMagickResource(MemoryResource,cache_info->length); |
| 1443 | break; |
| 1444 | } |
| 1445 | case MapCache: |
| 1446 | { |
| 1447 | cache_info->pixels=(PixelPacket *) UnmapBlob(cache_info->pixels,(size_t) |
| 1448 | cache_info->length); |
| 1449 | RelinquishMagickResource(MapResource,cache_info->length); |
| 1450 | } |
| 1451 | case DiskCache: |
| 1452 | { |
| 1453 | if (cache_info->file != -1) |
| 1454 | (void) ClosePixelCacheOnDisk(cache_info); |
| 1455 | RelinquishMagickResource(DiskResource,cache_info->length); |
| 1456 | break; |
| 1457 | } |
| 1458 | default: |
| 1459 | break; |
| 1460 | } |
| 1461 | cache_info->type=UndefinedCache; |
| 1462 | cache_info->mapped=MagickFalse; |
| 1463 | cache_info->indexes=(IndexPacket *) NULL; |
| 1464 | } |
| 1465 | |
| 1466 | MagickExport Cache DestroyPixelCache(Cache cache) |
| 1467 | { |
| 1468 | CacheInfo |
| 1469 | *cache_info; |
| 1470 | |
| 1471 | CacheType |
| 1472 | type; |
| 1473 | |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 1474 | MapMode |
| 1475 | mode; |
| 1476 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1477 | assert(cache != (Cache) NULL); |
| 1478 | cache_info=(CacheInfo *) cache; |
| 1479 | assert(cache_info->signature == MagickSignature); |
| 1480 | if (cache_info->debug != MagickFalse) |
| 1481 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 1482 | cache_info->filename); |
| 1483 | (void) LockSemaphoreInfo(cache_info->semaphore); |
| 1484 | cache_info->reference_count--; |
| 1485 | if (cache_info->reference_count != 0) |
| 1486 | { |
| 1487 | (void) UnlockSemaphoreInfo(cache_info->semaphore); |
| 1488 | return((Cache) NULL); |
| 1489 | } |
| 1490 | (void) UnlockSemaphoreInfo(cache_info->semaphore); |
| 1491 | if (cache_resources != (SplayTreeInfo *) NULL) |
| 1492 | (void) DeleteNodeByValueFromSplayTree(cache_resources,cache_info); |
| 1493 | type=cache_info->type; |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 1494 | mode=cache_info->mode; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1495 | RelinquishPixelCachePixels(cache_info); |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 1496 | if ((mode != ReadMode) && ((type == MapCache) || (type == DiskCache))) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1497 | (void) RelinquishUniqueFileResource(cache_info->cache_filename); |
| 1498 | *cache_info->cache_filename='\0'; |
| 1499 | if (cache_info->nexus_info != (NexusInfo **) NULL) |
| 1500 | cache_info->nexus_info=DestroyPixelCacheNexus(cache_info->nexus_info, |
| 1501 | cache_info->number_threads); |
| 1502 | if (cache_info->debug != MagickFalse) |
| 1503 | { |
| 1504 | char |
| 1505 | message[MaxTextExtent]; |
| 1506 | |
| 1507 | (void) FormatMagickString(message,MaxTextExtent,"destroy %s", |
| 1508 | cache_info->filename); |
| 1509 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s",message); |
| 1510 | } |
| 1511 | if (cache_info->random_info != (RandomInfo *) NULL) |
| 1512 | cache_info->random_info=DestroyRandomInfo(cache_info->random_info); |
| 1513 | cache_info->signature=(~MagickSignature); |
| 1514 | if (cache_info->disk_semaphore != (SemaphoreInfo *) NULL) |
| 1515 | DestroySemaphoreInfo(&cache_info->disk_semaphore); |
| 1516 | if (cache_info->semaphore != (SemaphoreInfo *) NULL) |
| 1517 | DestroySemaphoreInfo(&cache_info->semaphore); |
| 1518 | cache_info=(CacheInfo *) RelinquishAlignedMemory(cache_info); |
| 1519 | cache=(Cache) NULL; |
| 1520 | return(cache); |
| 1521 | } |
| 1522 | |
| 1523 | /* |
| 1524 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1525 | % % |
| 1526 | % % |
| 1527 | % % |
| 1528 | + D e s t r o y P i x e l C a c h e N e x u s % |
| 1529 | % % |
| 1530 | % % |
| 1531 | % % |
| 1532 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1533 | % |
| 1534 | % DestroyPixelCacheNexus() destroys a pixel cache nexus. |
| 1535 | % |
| 1536 | % The format of the DestroyPixelCacheNexus() method is: |
| 1537 | % |
| 1538 | % NexusInfo **DestroyPixelCacheNexus(NexusInfo *nexus_info, |
| 1539 | % const unsigned long number_threads) |
| 1540 | % |
| 1541 | % A description of each parameter follows: |
| 1542 | % |
| 1543 | % o nexus_info: the nexus to destroy. |
| 1544 | % |
| 1545 | % o number_threads: the number of nexus threads. |
| 1546 | % |
| 1547 | */ |
| 1548 | |
| 1549 | static inline void RelinquishCacheNexusPixels(NexusInfo *nexus_info) |
| 1550 | { |
| 1551 | if (nexus_info->mapped == MagickFalse) |
| 1552 | (void) RelinquishMagickMemory(nexus_info->cache); |
| 1553 | else |
| 1554 | (void) UnmapBlob(nexus_info->cache,(size_t) nexus_info->length); |
| 1555 | nexus_info->cache=(PixelPacket *) NULL; |
| 1556 | nexus_info->pixels=(PixelPacket *) NULL; |
| 1557 | nexus_info->indexes=(IndexPacket *) NULL; |
| 1558 | nexus_info->length=0; |
| 1559 | nexus_info->mapped=MagickFalse; |
| 1560 | } |
| 1561 | |
| 1562 | MagickExport NexusInfo **DestroyPixelCacheNexus(NexusInfo **nexus_info, |
| 1563 | const unsigned long number_threads) |
| 1564 | { |
| 1565 | register long |
| 1566 | i; |
| 1567 | |
| 1568 | assert(nexus_info != (NexusInfo **) NULL); |
| 1569 | for (i=0; i < (long) number_threads; i++) |
| 1570 | { |
| 1571 | if (nexus_info[i]->cache != (PixelPacket *) NULL) |
| 1572 | RelinquishCacheNexusPixels(nexus_info[i]); |
| 1573 | nexus_info[i]->signature=(~MagickSignature); |
| 1574 | nexus_info[i]=(NexusInfo *) RelinquishAlignedMemory(nexus_info[i]); |
| 1575 | } |
| 1576 | nexus_info=(NexusInfo **) RelinquishAlignedMemory(nexus_info); |
| 1577 | return(nexus_info); |
| 1578 | } |
| 1579 | |
| 1580 | /* |
| 1581 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1582 | % % |
| 1583 | % % |
| 1584 | % % |
| 1585 | + D e s t r o y P i x e l C a c h e R e s o u r c e s % |
| 1586 | % % |
| 1587 | % % |
| 1588 | % % |
| 1589 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1590 | % |
| 1591 | % DestroyPixelCacheResources() destroys the cache resources. |
| 1592 | % |
| 1593 | % The format of the DestroyPixelCacheResources() method is: |
| 1594 | % |
| 1595 | % DestroyPixelCacheResources(void) |
| 1596 | % |
| 1597 | */ |
| 1598 | MagickExport void DestroyPixelCacheResources(void) |
| 1599 | { |
| 1600 | AcquireSemaphoreInfo(&cache_semaphore); |
| 1601 | if (cache_resources != (SplayTreeInfo *) NULL) |
| 1602 | cache_resources=DestroySplayTree(cache_resources); |
| 1603 | instantiate_cache=MagickFalse; |
| 1604 | RelinquishSemaphoreInfo(cache_semaphore); |
| 1605 | DestroySemaphoreInfo(&cache_semaphore); |
| 1606 | } |
| 1607 | |
| 1608 | /* |
| 1609 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1610 | % % |
| 1611 | % % |
| 1612 | % % |
| 1613 | + G e t A u t h e n t i c I n d e x e s F r o m C a c h e % |
| 1614 | % % |
| 1615 | % % |
| 1616 | % % |
| 1617 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1618 | % |
| 1619 | % GetAuthenticIndexesFromCache() returns the indexes associated with the last |
| 1620 | % call to QueueAuthenticPixelsCache() or GetAuthenticPixelsCache(). |
| 1621 | % |
| 1622 | % The format of the GetAuthenticIndexesFromCache() method is: |
| 1623 | % |
| 1624 | % IndexPacket *GetAuthenticIndexesFromCache(const Image *image) |
| 1625 | % |
| 1626 | % A description of each parameter follows: |
| 1627 | % |
| 1628 | % o image: the image. |
| 1629 | % |
| 1630 | */ |
| 1631 | static IndexPacket *GetAuthenticIndexesFromCache(const Image *image) |
| 1632 | { |
| 1633 | CacheInfo |
| 1634 | *cache_info; |
| 1635 | |
| 1636 | IndexPacket |
| 1637 | *indexes; |
| 1638 | |
| 1639 | long |
| 1640 | id; |
| 1641 | |
| 1642 | if (image->debug != MagickFalse) |
| 1643 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1644 | cache_info=(CacheInfo *) image->cache; |
| 1645 | id=GetOpenMPThreadId(); |
| 1646 | assert(id < (long) cache_info->number_threads); |
| 1647 | indexes=GetPixelCacheNexusIndexes(image->cache,cache_info->nexus_info[id]); |
| 1648 | return(indexes); |
| 1649 | } |
| 1650 | |
| 1651 | /* |
| 1652 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1653 | % % |
| 1654 | % % |
| 1655 | % % |
| 1656 | % G e t A u t h e n t i c I n d e x Q u e u e % |
| 1657 | % % |
| 1658 | % % |
| 1659 | % % |
| 1660 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1661 | % |
| 1662 | % GetAuthenticIndexQueue() returns the authentic black channel or the colormap |
| 1663 | % indexes associated with the last call to QueueAuthenticPixels() or |
| 1664 | % GetVirtualPixels(). NULL is returned if the black channel or colormap |
| 1665 | % indexes are not available. |
| 1666 | % |
| 1667 | % The format of the GetAuthenticIndexQueue() method is: |
| 1668 | % |
| 1669 | % IndexPacket *GetAuthenticIndexQueue(const Image *image) |
| 1670 | % |
| 1671 | % A description of each parameter follows: |
| 1672 | % |
| 1673 | % o image: the image. |
| 1674 | % |
| 1675 | */ |
| 1676 | MagickExport IndexPacket *GetAuthenticIndexQueue(const Image *image) |
| 1677 | { |
| 1678 | CacheInfo |
| 1679 | *cache_info; |
| 1680 | |
| 1681 | assert(image != (const Image *) NULL); |
| 1682 | assert(image->signature == MagickSignature); |
| 1683 | if (image->debug != MagickFalse) |
| 1684 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1685 | assert(image->cache != (Cache) NULL); |
| 1686 | cache_info=(CacheInfo *) image->cache; |
| 1687 | assert(cache_info->signature == MagickSignature); |
| 1688 | if (cache_info->methods.get_authentic_indexes_from_handler == |
| 1689 | (GetAuthenticIndexesFromHandler) NULL) |
| 1690 | return((IndexPacket *) NULL); |
| 1691 | return(cache_info->methods.get_authentic_indexes_from_handler(image)); |
| 1692 | } |
| 1693 | |
| 1694 | /* |
| 1695 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1696 | % % |
| 1697 | % % |
| 1698 | % % |
| 1699 | + G e t A u t h e n t i c P i x e l C a c h e N e x u s % |
| 1700 | % % |
| 1701 | % % |
| 1702 | % % |
| 1703 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1704 | % |
| 1705 | % GetAuthenticPixelCacheNexus() gets authentic pixels from the in-memory or |
| 1706 | % disk pixel cache as defined by the geometry parameters. A pointer to the |
| 1707 | % pixels is returned if the pixels are transferred, otherwise a NULL is |
| 1708 | % returned. |
| 1709 | % |
| 1710 | % The format of the GetAuthenticPixelCacheNexus() method is: |
| 1711 | % |
| 1712 | % PixelPacket *GetAuthenticPixelCacheNexus(Image *image,const long x, |
| 1713 | % const long y,const unsigned long columns,const unsigned long rows, |
| 1714 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 1715 | % |
| 1716 | % A description of each parameter follows: |
| 1717 | % |
| 1718 | % o image: the image. |
| 1719 | % |
| 1720 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 1721 | % pixels. |
| 1722 | % |
| 1723 | % o nexus_info: the cache nexus to return. |
| 1724 | % |
| 1725 | % o exception: return any errors or warnings in this structure. |
| 1726 | % |
| 1727 | */ |
| 1728 | |
| 1729 | static inline MagickBooleanType IsNexusInCore(const CacheInfo *cache_info, |
| 1730 | NexusInfo *nexus_info) |
| 1731 | { |
| 1732 | MagickOffsetType |
| 1733 | offset; |
| 1734 | |
| 1735 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 1736 | nexus_info->region.x; |
| 1737 | if (nexus_info->pixels != (cache_info->pixels+offset)) |
| 1738 | return(MagickFalse); |
| 1739 | return(MagickTrue); |
| 1740 | } |
| 1741 | |
| 1742 | MagickExport PixelPacket *GetAuthenticPixelCacheNexus(Image *image,const long x, |
| 1743 | const long y,const unsigned long columns,const unsigned long rows, |
| 1744 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 1745 | { |
| 1746 | CacheInfo |
| 1747 | *cache_info; |
| 1748 | |
| 1749 | PixelPacket |
| 1750 | *pixels; |
| 1751 | |
| 1752 | /* |
| 1753 | Transfer pixels from the cache. |
| 1754 | */ |
| 1755 | assert(image != (Image *) NULL); |
| 1756 | assert(image->signature == MagickSignature); |
| 1757 | if (image->debug != MagickFalse) |
| 1758 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1759 | pixels=QueueAuthenticNexus(image,x,y,columns,rows,nexus_info,exception); |
| 1760 | if (pixels == (PixelPacket *) NULL) |
| 1761 | return((PixelPacket *) NULL); |
| 1762 | cache_info=(CacheInfo *) image->cache; |
| 1763 | assert(cache_info->signature == MagickSignature); |
| 1764 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 1765 | return(pixels); |
| 1766 | if (ReadPixelCachePixels(cache_info,nexus_info,exception) == MagickFalse) |
| 1767 | return((PixelPacket *) NULL); |
| 1768 | if (cache_info->active_index_channel != MagickFalse) |
| 1769 | if (ReadPixelCacheIndexes(cache_info,nexus_info,exception) == MagickFalse) |
| 1770 | return((PixelPacket *) NULL); |
| 1771 | return(pixels); |
| 1772 | } |
| 1773 | |
| 1774 | /* |
| 1775 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1776 | % % |
| 1777 | % % |
| 1778 | % % |
| 1779 | + G e t A u t h e n t i c P i x e l s F r o m C a c h e % |
| 1780 | % % |
| 1781 | % % |
| 1782 | % % |
| 1783 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1784 | % |
| 1785 | % GetAuthenticPixelsFromCache() returns the pixels associated with the last |
| 1786 | % call to the QueueAuthenticPixelsCache() or GetAuthenticPixelsCache() methods. |
| 1787 | % |
| 1788 | % The format of the GetAuthenticPixelsFromCache() method is: |
| 1789 | % |
| 1790 | % PixelPacket *GetAuthenticPixelsFromCache(const Image image) |
| 1791 | % |
| 1792 | % A description of each parameter follows: |
| 1793 | % |
| 1794 | % o image: the image. |
| 1795 | % |
| 1796 | */ |
| 1797 | static PixelPacket *GetAuthenticPixelsFromCache(const Image *image) |
| 1798 | { |
| 1799 | CacheInfo |
| 1800 | *cache_info; |
| 1801 | |
| 1802 | long |
| 1803 | id; |
| 1804 | |
| 1805 | PixelPacket |
| 1806 | *pixels; |
| 1807 | |
| 1808 | if (image->debug != MagickFalse) |
| 1809 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1810 | cache_info=(CacheInfo *) image->cache; |
| 1811 | id=GetOpenMPThreadId(); |
| 1812 | assert(id < (long) cache_info->number_threads); |
| 1813 | pixels=GetPixelCacheNexusPixels(image->cache,cache_info->nexus_info[id]); |
| 1814 | return(pixels); |
| 1815 | } |
| 1816 | |
| 1817 | /* |
| 1818 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1819 | % % |
| 1820 | % % |
| 1821 | % % |
| 1822 | % G e t A u t h e n t i c P i x e l Q u e u e % |
| 1823 | % % |
| 1824 | % % |
| 1825 | % % |
| 1826 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1827 | % |
| 1828 | % GetAuthenticPixelQueue() returns the authentic pixels associated with the |
| 1829 | % last call to QueueAuthenticPixels() or GetAuthenticPixels(). |
| 1830 | % |
| 1831 | % The format of the GetAuthenticPixelQueue() method is: |
| 1832 | % |
| 1833 | % PixelPacket *GetAuthenticPixelQueue(const Image image) |
| 1834 | % |
| 1835 | % A description of each parameter follows: |
| 1836 | % |
| 1837 | % o image: the image. |
| 1838 | % |
| 1839 | */ |
| 1840 | MagickExport PixelPacket *GetAuthenticPixelQueue(const Image *image) |
| 1841 | { |
| 1842 | CacheInfo |
| 1843 | *cache_info; |
| 1844 | |
| 1845 | assert(image != (const Image *) NULL); |
| 1846 | assert(image->signature == MagickSignature); |
| 1847 | if (image->debug != MagickFalse) |
| 1848 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1849 | assert(image->cache != (Cache) NULL); |
| 1850 | cache_info=(CacheInfo *) image->cache; |
| 1851 | assert(cache_info->signature == MagickSignature); |
| 1852 | if (cache_info->methods.get_authentic_pixels_from_handler == |
| 1853 | (GetAuthenticPixelsFromHandler) NULL) |
| 1854 | return((PixelPacket *) NULL); |
| 1855 | return(cache_info->methods.get_authentic_pixels_from_handler(image)); |
| 1856 | } |
| 1857 | |
| 1858 | /* |
| 1859 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1860 | % % |
| 1861 | % % |
| 1862 | % % |
| 1863 | % G e t A u t h e n t i c P i x e l s % |
| 1864 | % % |
| 1865 | % % |
| 1866 | % % |
| 1867 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1868 | % |
| 1869 | % GetAuthenticPixels() obtains a pixel region for read/write access. If the |
| 1870 | % region is successfully accessed, a pointer to a PixelPacket array |
| 1871 | % representing the region is returned, otherwise NULL is returned. |
| 1872 | % |
| 1873 | % The returned pointer may point to a temporary working copy of the pixels |
| 1874 | % or it may point to the original pixels in memory. Performance is maximized |
| 1875 | % if the selected region is part of one row, or one or more full rows, since |
| 1876 | % then there is opportunity to access the pixels in-place (without a copy) |
| 1877 | % if the image is in RAM, or in a memory-mapped file. The returned pointer |
| 1878 | % should *never* be deallocated by the user. |
| 1879 | % |
| 1880 | % Pixels accessed via the returned pointer represent a simple array of type |
| 1881 | % PixelPacket. If the image type is CMYK or if the storage class is |
| 1882 | % PseduoClass, call GetAuthenticIndexQueue() after invoking |
| 1883 | % GetAuthenticPixels() to obtain the black color component or colormap indexes |
| 1884 | % (of type IndexPacket) corresponding to the region. Once the PixelPacket |
| 1885 | % (and/or IndexPacket) array has been updated, the changes must be saved back |
| 1886 | % to the underlying image using SyncAuthenticPixels() or they may be lost. |
| 1887 | % |
| 1888 | % The format of the GetAuthenticPixels() method is: |
| 1889 | % |
| 1890 | % PixelPacket *GetAuthenticPixels(Image *image,const long x,const long y, |
| 1891 | % const unsigned long columns,const unsigned long rows, |
| 1892 | % ExceptionInfo *exception) |
| 1893 | % |
| 1894 | % A description of each parameter follows: |
| 1895 | % |
| 1896 | % o image: the image. |
| 1897 | % |
| 1898 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 1899 | % pixels. |
| 1900 | % |
| 1901 | % o exception: return any errors or warnings in this structure. |
| 1902 | % |
| 1903 | */ |
| 1904 | MagickExport PixelPacket *GetAuthenticPixels(Image *image,const long x, |
| 1905 | const long y,const unsigned long columns,const unsigned long rows, |
| 1906 | ExceptionInfo *exception) |
| 1907 | { |
| 1908 | CacheInfo |
| 1909 | *cache_info; |
| 1910 | |
| 1911 | PixelPacket |
| 1912 | *pixels; |
| 1913 | |
| 1914 | assert(image != (Image *) NULL); |
| 1915 | assert(image->signature == MagickSignature); |
| 1916 | if (image->debug != MagickFalse) |
| 1917 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1918 | assert(image->cache != (Cache) NULL); |
| 1919 | cache_info=(CacheInfo *) image->cache; |
| 1920 | assert(cache_info->signature == MagickSignature); |
| 1921 | if (cache_info->methods.get_authentic_pixels_handler == |
| 1922 | (GetAuthenticPixelsHandler) NULL) |
| 1923 | return((PixelPacket *) NULL); |
| 1924 | pixels=cache_info->methods.get_authentic_pixels_handler(image,x,y,columns, |
| 1925 | rows,exception); |
| 1926 | return(pixels); |
| 1927 | } |
| 1928 | |
| 1929 | /* |
| 1930 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1931 | % % |
| 1932 | % % |
| 1933 | % % |
| 1934 | + G e t A u t h e n t i c P i x e l s C a c h e % |
| 1935 | % % |
| 1936 | % % |
| 1937 | % % |
| 1938 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1939 | % |
| 1940 | % GetAuthenticPixelsCache() gets pixels from the in-memory or disk pixel cache |
| 1941 | % as defined by the geometry parameters. A pointer to the pixels is returned |
| 1942 | % if the pixels are transferred, otherwise a NULL is returned. |
| 1943 | % |
| 1944 | % The format of the GetAuthenticPixelsCache() method is: |
| 1945 | % |
| 1946 | % PixelPacket *GetAuthenticPixelsCache(Image *image,const long x, |
| 1947 | % const long y,const unsigned long columns,const unsigned long rows, |
| 1948 | % ExceptionInfo *exception) |
| 1949 | % |
| 1950 | % A description of each parameter follows: |
| 1951 | % |
| 1952 | % o image: the image. |
| 1953 | % |
| 1954 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 1955 | % pixels. |
| 1956 | % |
| 1957 | % o exception: return any errors or warnings in this structure. |
| 1958 | % |
| 1959 | */ |
| 1960 | static PixelPacket *GetAuthenticPixelsCache(Image *image,const long x, |
| 1961 | const long y,const unsigned long columns,const unsigned long rows, |
| 1962 | ExceptionInfo *exception) |
| 1963 | { |
| 1964 | CacheInfo |
| 1965 | *cache_info; |
| 1966 | |
| 1967 | long |
| 1968 | id; |
| 1969 | |
| 1970 | PixelPacket |
| 1971 | *pixels; |
| 1972 | |
| 1973 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickTrue,exception); |
| 1974 | if (cache_info == (Cache) NULL) |
| 1975 | return((PixelPacket *) NULL); |
| 1976 | id=GetOpenMPThreadId(); |
| 1977 | assert(id < (long) cache_info->number_threads); |
| 1978 | pixels=GetAuthenticPixelCacheNexus(image,x,y,columns,rows, |
| 1979 | cache_info->nexus_info[id],exception); |
| 1980 | return(pixels); |
| 1981 | } |
| 1982 | |
| 1983 | /* |
| 1984 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1985 | % % |
| 1986 | % % |
| 1987 | % % |
| 1988 | + G e t I m a g e E x t e n t % |
| 1989 | % % |
| 1990 | % % |
| 1991 | % % |
| 1992 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1993 | % |
| 1994 | % GetImageExtent() returns the extent of the pixels associated with the |
| 1995 | % last call to QueueAuthenticPixels() or GetAuthenticPixels(). |
| 1996 | % |
| 1997 | % The format of the GetImageExtent() method is: |
| 1998 | % |
| 1999 | % MagickSizeType GetImageExtent(const Image *image) |
| 2000 | % |
| 2001 | % A description of each parameter follows: |
| 2002 | % |
| 2003 | % o image: the image. |
| 2004 | % |
| 2005 | */ |
| 2006 | MagickExport MagickSizeType GetImageExtent(const Image *image) |
| 2007 | { |
| 2008 | CacheInfo |
| 2009 | *cache_info; |
| 2010 | |
| 2011 | long |
| 2012 | id; |
| 2013 | |
| 2014 | MagickSizeType |
| 2015 | extent; |
| 2016 | |
| 2017 | assert(image != (Image *) NULL); |
| 2018 | assert(image->signature == MagickSignature); |
| 2019 | if (image->debug != MagickFalse) |
| 2020 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2021 | assert(image->cache != (Cache) NULL); |
| 2022 | cache_info=(CacheInfo *) image->cache; |
| 2023 | assert(cache_info->signature == MagickSignature); |
| 2024 | id=GetOpenMPThreadId(); |
| 2025 | assert(id < (long) cache_info->number_threads); |
| 2026 | extent=GetPixelCacheNexusExtent(image->cache,cache_info->nexus_info[id]); |
| 2027 | return(extent); |
| 2028 | } |
| 2029 | |
| 2030 | /* |
| 2031 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2032 | % % |
| 2033 | % % |
| 2034 | % % |
| 2035 | + G e t I m a g e P i x e l C a c h e % |
| 2036 | % % |
| 2037 | % % |
| 2038 | % % |
| 2039 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2040 | % |
| 2041 | % GetImagePixelCache() ensures that there is only a single reference to the |
| 2042 | % pixel cache to be modified, updating the provided cache pointer to point to |
| 2043 | % a clone of the original pixel cache if necessary. |
| 2044 | % |
| 2045 | % The format of the GetImagePixelCache method is: |
| 2046 | % |
| 2047 | % Cache GetImagePixelCache(Image *image,const MagickBooleanType clone, |
| 2048 | % ExceptionInfo *exception) |
| 2049 | % |
| 2050 | % A description of each parameter follows: |
| 2051 | % |
| 2052 | % o image: the image. |
| 2053 | % |
| 2054 | % o clone: any value other than MagickFalse clones the cache pixels. |
| 2055 | % |
| 2056 | % o exception: return any errors or warnings in this structure. |
| 2057 | % |
| 2058 | */ |
| 2059 | |
| 2060 | static inline MagickBooleanType ValidatePixelCacheMorphology(const Image *image) |
| 2061 | { |
| 2062 | CacheInfo |
| 2063 | *cache_info; |
| 2064 | |
| 2065 | /* |
| 2066 | Does the image match the pixel cache morphology? |
| 2067 | */ |
| 2068 | cache_info=(CacheInfo *) image->cache; |
| 2069 | if ((image->storage_class != cache_info->storage_class) || |
| 2070 | (image->colorspace != cache_info->colorspace) || |
| 2071 | (image->columns != cache_info->columns) || |
| 2072 | (image->rows != cache_info->rows) || |
| 2073 | (cache_info->nexus_info == (NexusInfo **) NULL) || |
| 2074 | (cache_info->number_threads < GetOpenMPMaximumThreads())) |
| 2075 | return(MagickFalse); |
| 2076 | return(MagickTrue); |
| 2077 | } |
| 2078 | |
| 2079 | MagickExport Cache GetImagePixelCache(Image *image, |
| 2080 | const MagickBooleanType clone,ExceptionInfo *exception) |
| 2081 | { |
| 2082 | CacheInfo |
| 2083 | *cache_info; |
| 2084 | |
| 2085 | MagickSizeType |
| 2086 | time_limit; |
| 2087 | |
| 2088 | MagickBooleanType |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2089 | destroy, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2090 | status; |
| 2091 | |
| 2092 | if (image->debug != MagickFalse) |
| 2093 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2094 | status=MagickTrue; |
| 2095 | (void) LockSemaphoreInfo(image->semaphore); |
| 2096 | time_limit=GetMagickResourceLimit(TimeResource); |
| 2097 | if (cache_timer == 0) |
| 2098 | cache_timer=time((time_t *) NULL); |
| 2099 | if ((time_limit != MagickResourceInfinity) && |
| 2100 | ((MagickSizeType) (time((time_t *) NULL)-cache_timer) >= time_limit)) |
| 2101 | ThrowFatalException(ResourceLimitFatalError,"TimeLimitExceeded"); |
| 2102 | assert(image->cache != (Cache) NULL); |
| 2103 | cache_info=(CacheInfo *) image->cache; |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2104 | destroy=MagickFalse; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2105 | (void) LockSemaphoreInfo(cache_info->semaphore); |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 2106 | if ((cache_info->reference_count > 1) || (cache_info->mode == ReadMode)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2107 | { |
| 2108 | Image |
| 2109 | clone_image; |
| 2110 | |
| 2111 | CacheInfo |
| 2112 | *clone_info; |
| 2113 | |
| 2114 | /* |
| 2115 | Clone pixel cache. |
| 2116 | */ |
| 2117 | clone_image=(*image); |
| 2118 | clone_image.cache=ClonePixelCache(cache_info); |
| 2119 | clone_info=(CacheInfo *) clone_image.cache; |
| 2120 | status=ClonePixelCacheNexus(cache_info,clone_info,exception); |
| 2121 | if (status != MagickFalse) |
| 2122 | { |
| 2123 | status=OpenPixelCache(&clone_image,IOMode,exception); |
| 2124 | if (status != MagickFalse) |
| 2125 | { |
| 2126 | if (clone != MagickFalse) |
| 2127 | status=ClonePixelCachePixels(clone_info,cache_info,exception); |
| 2128 | if (status != MagickFalse) |
| 2129 | { |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2130 | destroy=MagickTrue; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2131 | image->cache=clone_image.cache; |
| 2132 | } |
| 2133 | } |
| 2134 | } |
| 2135 | } |
| 2136 | (void) UnlockSemaphoreInfo(cache_info->semaphore); |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2137 | if (destroy != MagickFalse) |
| 2138 | DestroyPixelCache(cache_info); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2139 | if (status != MagickFalse) |
| 2140 | { |
| 2141 | /* |
| 2142 | Ensure the image matches the pixel cache morphology. |
| 2143 | */ |
| 2144 | image->taint=MagickTrue; |
| 2145 | image->type=UndefinedType; |
| 2146 | if (image->colorspace == GRAYColorspace) |
| 2147 | image->colorspace=RGBColorspace; |
| 2148 | if (ValidatePixelCacheMorphology(image) == MagickFalse) |
| 2149 | status=OpenPixelCache(image,IOMode,exception); |
| 2150 | } |
| 2151 | (void) UnlockSemaphoreInfo(image->semaphore); |
| 2152 | if (status == MagickFalse) |
| 2153 | return((Cache) NULL); |
| 2154 | return(image->cache); |
| 2155 | } |
| 2156 | |
| 2157 | /* |
| 2158 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2159 | % % |
| 2160 | % % |
| 2161 | % % |
| 2162 | % G e t O n e A u t h e n t i c P i x e l % |
| 2163 | % % |
| 2164 | % % |
| 2165 | % % |
| 2166 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2167 | % |
| 2168 | % GetOneAuthenticPixel() returns a single pixel at the specified (x,y) |
| 2169 | % location. The image background color is returned if an error occurs. |
| 2170 | % |
| 2171 | % The format of the GetOneAuthenticPixel() method is: |
| 2172 | % |
| 2173 | % MagickBooleanType GetOneAuthenticPixel(const Image image,const long x, |
| 2174 | % const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2175 | % |
| 2176 | % A description of each parameter follows: |
| 2177 | % |
| 2178 | % o image: the image. |
| 2179 | % |
| 2180 | % o x,y: These values define the location of the pixel to return. |
| 2181 | % |
| 2182 | % o pixel: return a pixel at the specified (x,y) location. |
| 2183 | % |
| 2184 | % o exception: return any errors or warnings in this structure. |
| 2185 | % |
| 2186 | */ |
| 2187 | MagickExport MagickBooleanType GetOneAuthenticPixel(Image *image,const long x, |
| 2188 | const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2189 | { |
| 2190 | CacheInfo |
| 2191 | *cache_info; |
| 2192 | |
| 2193 | GetOneAuthenticPixelFromHandler |
| 2194 | get_one_authentic_pixel_from_handler; |
| 2195 | |
| 2196 | MagickBooleanType |
| 2197 | status; |
| 2198 | |
| 2199 | assert(image != (Image *) NULL); |
| 2200 | assert(image->signature == MagickSignature); |
| 2201 | if (image->debug != MagickFalse) |
| 2202 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2203 | assert(image->cache != (Cache) NULL); |
| 2204 | cache_info=(CacheInfo *) image->cache; |
| 2205 | assert(cache_info->signature == MagickSignature); |
| 2206 | *pixel=image->background_color; |
| 2207 | get_one_authentic_pixel_from_handler= |
| 2208 | cache_info->methods.get_one_authentic_pixel_from_handler; |
| 2209 | if (get_one_authentic_pixel_from_handler == |
| 2210 | (GetOneAuthenticPixelFromHandler) NULL) |
| 2211 | return(MagickFalse); |
| 2212 | status=cache_info->methods.get_one_authentic_pixel_from_handler(image,x,y, |
| 2213 | pixel,exception); |
| 2214 | return(status); |
| 2215 | } |
| 2216 | |
| 2217 | /* |
| 2218 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2219 | % % |
| 2220 | % % |
| 2221 | % % |
| 2222 | + G e t O n e A u t h e n t i c P i x e l F r o m C a c h e % |
| 2223 | % % |
| 2224 | % % |
| 2225 | % % |
| 2226 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2227 | % |
| 2228 | % GetOneAuthenticPixelFromCache() returns a single pixel at the specified (x,y) |
| 2229 | % location. The image background color is returned if an error occurs. |
| 2230 | % |
| 2231 | % The format of the GetOneAuthenticPixelFromCache() method is: |
| 2232 | % |
| 2233 | % MagickBooleanType GetOneAuthenticPixelFromCache(const Image image, |
| 2234 | % const long x,const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2235 | % |
| 2236 | % A description of each parameter follows: |
| 2237 | % |
| 2238 | % o image: the image. |
| 2239 | % |
| 2240 | % o x,y: These values define the location of the pixel to return. |
| 2241 | % |
| 2242 | % o pixel: return a pixel at the specified (x,y) location. |
| 2243 | % |
| 2244 | % o exception: return any errors or warnings in this structure. |
| 2245 | % |
| 2246 | */ |
| 2247 | static MagickBooleanType GetOneAuthenticPixelFromCache(Image *image, |
| 2248 | const long x,const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2249 | { |
| 2250 | PixelPacket |
| 2251 | *pixels; |
| 2252 | |
| 2253 | if (image->debug != MagickFalse) |
| 2254 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2255 | *pixel=image->background_color; |
| 2256 | pixels=GetAuthenticPixelsCache(image,x,y,1UL,1UL,exception); |
| 2257 | if (pixels == (PixelPacket *) NULL) |
| 2258 | return(MagickFalse); |
| 2259 | *pixel=(*pixels); |
| 2260 | return(MagickTrue); |
| 2261 | } |
| 2262 | |
| 2263 | /* |
| 2264 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2265 | % % |
| 2266 | % % |
| 2267 | % % |
| 2268 | % G e t O n e V i r t u a l M a g i c k P i x e l % |
| 2269 | % % |
| 2270 | % % |
| 2271 | % % |
| 2272 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2273 | % |
| 2274 | % GetOneVirtualMagickPixel() returns a single pixel at the specified (x,y) |
| 2275 | % location. The image background color is returned if an error occurs. If |
| 2276 | % you plan to modify the pixel, use GetOneAuthenticPixel() instead. |
| 2277 | % |
| 2278 | % The format of the GetOneVirtualMagickPixel() method is: |
| 2279 | % |
| 2280 | % MagickBooleanType GetOneVirtualMagickPixel(const Image image, |
| 2281 | % const long x,const long y,MagickPixelPacket *pixel, |
| 2282 | % ExceptionInfo exception) |
| 2283 | % |
| 2284 | % A description of each parameter follows: |
| 2285 | % |
| 2286 | % o image: the image. |
| 2287 | % |
| 2288 | % o x,y: these values define the location of the pixel to return. |
| 2289 | % |
| 2290 | % o pixel: return a pixel at the specified (x,y) location. |
| 2291 | % |
| 2292 | % o exception: return any errors or warnings in this structure. |
| 2293 | % |
| 2294 | */ |
| 2295 | MagickExport MagickBooleanType GetOneVirtualMagickPixel(const Image *image, |
| 2296 | const long x,const long y,MagickPixelPacket *pixel,ExceptionInfo *exception) |
| 2297 | { |
| 2298 | CacheInfo |
| 2299 | *cache_info; |
| 2300 | |
| 2301 | register const IndexPacket |
| 2302 | *indexes; |
| 2303 | |
| 2304 | register const PixelPacket |
| 2305 | *p; |
| 2306 | |
| 2307 | assert(image != (const Image *) NULL); |
| 2308 | assert(image->signature == MagickSignature); |
| 2309 | assert(image->cache != (Cache) NULL); |
| 2310 | cache_info=(CacheInfo *) image->cache; |
| 2311 | assert(cache_info->signature == MagickSignature); |
| 2312 | GetMagickPixelPacket(image,pixel); |
| 2313 | p=GetVirtualPixelCache(image,GetPixelCacheVirtualMethod(image),x,y,1,1, |
| 2314 | exception); |
| 2315 | if (p == (const PixelPacket *) NULL) |
| 2316 | return(MagickFalse); |
| 2317 | indexes=GetVirtualIndexQueue(image); |
| 2318 | SetMagickPixelPacket(image,p,indexes,pixel); |
| 2319 | return(MagickTrue); |
| 2320 | } |
| 2321 | |
| 2322 | /* |
| 2323 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2324 | % % |
| 2325 | % % |
| 2326 | % % |
| 2327 | % G e t O n e V i r t u a l M e t h o d P i x e l % |
| 2328 | % % |
| 2329 | % % |
| 2330 | % % |
| 2331 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2332 | % |
| 2333 | % GetOneVirtualMethodPixel() returns a single pixel at the specified (x,y) |
| 2334 | % location as defined by specified pixel method. The image background color |
| 2335 | % is returned if an error occurs. If you plan to modify the pixel, use |
| 2336 | % GetOneAuthenticPixel() instead. |
| 2337 | % |
| 2338 | % The format of the GetOneVirtualMethodPixel() method is: |
| 2339 | % |
| 2340 | % MagickBooleanType GetOneVirtualMethodPixel(const Image image, |
| 2341 | % const VirtualPixelMethod virtual_pixel_method,const long x, |
| 2342 | % const long y,Pixelpacket *pixel,ExceptionInfo exception) |
| 2343 | % |
| 2344 | % A description of each parameter follows: |
| 2345 | % |
| 2346 | % o image: the image. |
| 2347 | % |
| 2348 | % o virtual_pixel_method: the virtual pixel method. |
| 2349 | % |
| 2350 | % o x,y: These values define the location of the pixel to return. |
| 2351 | % |
| 2352 | % o pixel: return a pixel at the specified (x,y) location. |
| 2353 | % |
| 2354 | % o exception: return any errors or warnings in this structure. |
| 2355 | % |
| 2356 | */ |
| 2357 | MagickExport MagickBooleanType GetOneVirtualMethodPixel(const Image *image, |
| 2358 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 2359 | PixelPacket *pixel,ExceptionInfo *exception) |
| 2360 | { |
| 2361 | GetOneVirtualPixelFromHandler |
| 2362 | get_one_virtual_pixel_from_handler; |
| 2363 | |
| 2364 | CacheInfo |
| 2365 | *cache_info; |
| 2366 | |
| 2367 | MagickBooleanType |
| 2368 | status; |
| 2369 | |
| 2370 | assert(image != (const Image *) NULL); |
| 2371 | assert(image->signature == MagickSignature); |
| 2372 | assert(image->cache != (Cache) NULL); |
| 2373 | cache_info=(CacheInfo *) image->cache; |
| 2374 | assert(cache_info->signature == MagickSignature); |
| 2375 | *pixel=image->background_color; |
| 2376 | get_one_virtual_pixel_from_handler= |
| 2377 | cache_info->methods.get_one_virtual_pixel_from_handler; |
| 2378 | if (get_one_virtual_pixel_from_handler == |
| 2379 | (GetOneVirtualPixelFromHandler) NULL) |
| 2380 | return(MagickFalse); |
| 2381 | status=get_one_virtual_pixel_from_handler(image,virtual_pixel_method,x,y, |
| 2382 | pixel,exception); |
| 2383 | return(status); |
| 2384 | } |
| 2385 | |
| 2386 | /* |
| 2387 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2388 | % % |
| 2389 | % % |
| 2390 | % % |
| 2391 | % G e t O n e V i r t u a l P i x e l % |
| 2392 | % % |
| 2393 | % % |
| 2394 | % % |
| 2395 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2396 | % |
| 2397 | % GetOneVirtualPixel() returns a single virtual pixel at the specified |
| 2398 | % (x,y) location. The image background color is returned if an error occurs. |
| 2399 | % If you plan to modify the pixel, use GetOneAuthenticPixel() instead. |
| 2400 | % |
| 2401 | % The format of the GetOneVirtualPixel() method is: |
| 2402 | % |
| 2403 | % MagickBooleanType GetOneVirtualPixel(const Image image,const long x, |
| 2404 | % const long y,PixelPacket *pixel,ExceptionInfo exception) |
| 2405 | % |
| 2406 | % A description of each parameter follows: |
| 2407 | % |
| 2408 | % o image: the image. |
| 2409 | % |
| 2410 | % o x,y: These values define the location of the pixel to return. |
| 2411 | % |
| 2412 | % o pixel: return a pixel at the specified (x,y) location. |
| 2413 | % |
| 2414 | % o exception: return any errors or warnings in this structure. |
| 2415 | % |
| 2416 | */ |
| 2417 | MagickExport MagickBooleanType GetOneVirtualPixel(const Image *image, |
| 2418 | const long x,const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2419 | { |
| 2420 | GetOneVirtualPixelFromHandler |
| 2421 | get_one_virtual_pixel_from_handler; |
| 2422 | |
| 2423 | CacheInfo |
| 2424 | *cache_info; |
| 2425 | |
| 2426 | MagickBooleanType |
| 2427 | status; |
| 2428 | |
| 2429 | assert(image != (const Image *) NULL); |
| 2430 | assert(image->signature == MagickSignature); |
| 2431 | assert(image->cache != (Cache) NULL); |
| 2432 | cache_info=(CacheInfo *) image->cache; |
| 2433 | assert(cache_info->signature == MagickSignature); |
| 2434 | *pixel=image->background_color; |
| 2435 | get_one_virtual_pixel_from_handler= |
| 2436 | cache_info->methods.get_one_virtual_pixel_from_handler; |
| 2437 | if (get_one_virtual_pixel_from_handler == |
| 2438 | (GetOneVirtualPixelFromHandler) NULL) |
| 2439 | return(MagickFalse); |
| 2440 | status=get_one_virtual_pixel_from_handler(image,GetPixelCacheVirtualMethod( |
| 2441 | image),x,y,pixel,exception); |
| 2442 | return(status); |
| 2443 | } |
| 2444 | |
| 2445 | /* |
| 2446 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2447 | % % |
| 2448 | % % |
| 2449 | % % |
| 2450 | + G e t O n e V i r t u a l P i x e l F r o m C a c h e % |
| 2451 | % % |
| 2452 | % % |
| 2453 | % % |
| 2454 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2455 | % |
| 2456 | % GetOneVirtualPixelFromCache() returns a single virtual pixel at the |
| 2457 | % specified (x,y) location. The image background color is returned if an |
| 2458 | % error occurs. |
| 2459 | % |
| 2460 | % The format of the GetOneVirtualPixelFromCache() method is: |
| 2461 | % |
| 2462 | % MagickBooleanType GetOneVirtualPixelFromCache(const Image image, |
| 2463 | % const VirtualPixelPacket method,const long x,const long y, |
| 2464 | % PixelPacket *pixel,ExceptionInfo *exception) |
| 2465 | % |
| 2466 | % A description of each parameter follows: |
| 2467 | % |
| 2468 | % o image: the image. |
| 2469 | % |
| 2470 | % o virtual_pixel_method: the virtual pixel method. |
| 2471 | % |
| 2472 | % o x,y: These values define the location of the pixel to return. |
| 2473 | % |
| 2474 | % o pixel: return a pixel at the specified (x,y) location. |
| 2475 | % |
| 2476 | % o exception: return any errors or warnings in this structure. |
| 2477 | % |
| 2478 | */ |
| 2479 | static MagickBooleanType GetOneVirtualPixelFromCache(const Image *image, |
| 2480 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 2481 | PixelPacket *pixel,ExceptionInfo *exception) |
| 2482 | { |
| 2483 | const PixelPacket |
| 2484 | *pixels; |
| 2485 | |
| 2486 | *pixel=image->background_color; |
| 2487 | pixels=GetVirtualPixelCache(image,virtual_pixel_method,x,y,1UL,1UL,exception); |
| 2488 | if (pixels == (const PixelPacket *) NULL) |
| 2489 | return(MagickFalse); |
| 2490 | *pixel=(*pixels); |
| 2491 | return(MagickTrue); |
| 2492 | } |
| 2493 | |
| 2494 | /* |
| 2495 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2496 | % % |
| 2497 | % % |
| 2498 | % % |
| 2499 | + G e t P i x e l C a c h e C o l o r s p a c e % |
| 2500 | % % |
| 2501 | % % |
| 2502 | % % |
| 2503 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2504 | % |
| 2505 | % GetPixelCacheColorspace() returns the class type of the pixel cache. |
| 2506 | % |
| 2507 | % The format of the GetPixelCacheColorspace() method is: |
| 2508 | % |
| 2509 | % Colorspace GetPixelCacheColorspace(Cache cache) |
| 2510 | % |
| 2511 | % A description of each parameter follows: |
| 2512 | % |
| 2513 | % o cache: the pixel cache. |
| 2514 | % |
| 2515 | */ |
| 2516 | MagickExport ColorspaceType GetPixelCacheColorspace(const Cache cache) |
| 2517 | { |
| 2518 | CacheInfo |
| 2519 | *cache_info; |
| 2520 | |
| 2521 | assert(cache != (Cache) NULL); |
| 2522 | cache_info=(CacheInfo *) cache; |
| 2523 | assert(cache_info->signature == MagickSignature); |
| 2524 | if (cache_info->debug != MagickFalse) |
| 2525 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2526 | cache_info->filename); |
| 2527 | return(cache_info->colorspace); |
| 2528 | } |
| 2529 | |
| 2530 | /* |
| 2531 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2532 | % % |
| 2533 | % % |
| 2534 | % % |
| 2535 | + G e t P i x e l C a c h e M e t h o d s % |
| 2536 | % % |
| 2537 | % % |
| 2538 | % % |
| 2539 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2540 | % |
| 2541 | % GetPixelCacheMethods() initializes the CacheMethods structure. |
| 2542 | % |
| 2543 | % The format of the GetPixelCacheMethods() method is: |
| 2544 | % |
| 2545 | % void GetPixelCacheMethods(CacheMethods *cache_methods) |
| 2546 | % |
| 2547 | % A description of each parameter follows: |
| 2548 | % |
| 2549 | % o cache_methods: Specifies a pointer to a CacheMethods structure. |
| 2550 | % |
| 2551 | */ |
| 2552 | MagickExport void GetPixelCacheMethods(CacheMethods *cache_methods) |
| 2553 | { |
| 2554 | assert(cache_methods != (CacheMethods *) NULL); |
| 2555 | (void) ResetMagickMemory(cache_methods,0,sizeof(*cache_methods)); |
| 2556 | cache_methods->get_virtual_pixel_handler=GetVirtualPixelCache; |
| 2557 | cache_methods->get_virtual_pixels_handler=GetVirtualPixelsCache; |
| 2558 | cache_methods->get_virtual_indexes_from_handler=GetVirtualIndexesFromCache; |
| 2559 | cache_methods->get_one_virtual_pixel_from_handler=GetOneVirtualPixelFromCache; |
| 2560 | cache_methods->get_authentic_pixels_handler=GetAuthenticPixelsCache; |
| 2561 | cache_methods->get_authentic_indexes_from_handler= |
| 2562 | GetAuthenticIndexesFromCache; |
| 2563 | cache_methods->get_authentic_pixels_from_handler=GetAuthenticPixelsFromCache; |
| 2564 | cache_methods->get_one_authentic_pixel_from_handler= |
| 2565 | GetOneAuthenticPixelFromCache; |
| 2566 | cache_methods->queue_authentic_pixels_handler=QueueAuthenticPixelsCache; |
| 2567 | cache_methods->sync_authentic_pixels_handler=SyncAuthenticPixelsCache; |
| 2568 | cache_methods->destroy_pixel_handler=DestroyImagePixelCache; |
| 2569 | } |
| 2570 | |
| 2571 | /* |
| 2572 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2573 | % % |
| 2574 | % % |
| 2575 | % % |
| 2576 | + G e t P i x e l C a c h e N e x u s E x t e n t % |
| 2577 | % % |
| 2578 | % % |
| 2579 | % % |
| 2580 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2581 | % |
| 2582 | % GetPixelCacheNexusExtent() returns the extent of the pixels associated with |
| 2583 | % the last call to SetPixelCacheNexusPixels() or GetPixelCacheNexusPixels(). |
| 2584 | % |
| 2585 | % The format of the GetPixelCacheNexusExtent() method is: |
| 2586 | % |
| 2587 | % MagickSizeType GetPixelCacheNexusExtent(const Cache cache, |
| 2588 | % NexusInfo *nexus_info) |
| 2589 | % |
| 2590 | % A description of each parameter follows: |
| 2591 | % |
| 2592 | % o nexus_info: the nexus info. |
| 2593 | % |
| 2594 | */ |
| 2595 | MagickExport MagickSizeType GetPixelCacheNexusExtent(const Cache cache, |
| 2596 | NexusInfo *nexus_info) |
| 2597 | { |
| 2598 | CacheInfo |
| 2599 | *cache_info; |
| 2600 | |
| 2601 | MagickSizeType |
| 2602 | extent; |
| 2603 | |
| 2604 | if (cache == (Cache) NULL) |
| 2605 | return(0); |
| 2606 | cache_info=(CacheInfo *) cache; |
| 2607 | assert(cache_info->signature == MagickSignature); |
| 2608 | extent=(MagickSizeType) nexus_info->region.width*nexus_info->region.height; |
| 2609 | if (extent == 0) |
| 2610 | return((MagickSizeType) cache_info->columns*cache_info->rows); |
| 2611 | return(extent); |
| 2612 | } |
| 2613 | |
| 2614 | /* |
| 2615 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2616 | % % |
| 2617 | % % |
| 2618 | % % |
| 2619 | + G e t P i x e l C a c h e N e x u s I n d e x e s % |
| 2620 | % % |
| 2621 | % % |
| 2622 | % % |
| 2623 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2624 | % |
| 2625 | % GetPixelCacheNexusIndexes() returns the indexes associated with the |
| 2626 | % specified cache nexus. |
| 2627 | % |
| 2628 | % The format of the GetPixelCacheNexusIndexes() method is: |
| 2629 | % |
| 2630 | % IndexPacket *GetPixelCacheNexusIndexes(const Cache cache, |
| 2631 | % NexusInfo *nexus_info) |
| 2632 | % |
| 2633 | % A description of each parameter follows: |
| 2634 | % |
| 2635 | % o cache: the pixel cache. |
| 2636 | % |
| 2637 | % o nexus_info: the cache nexus to return the colormap indexes. |
| 2638 | % |
| 2639 | */ |
| 2640 | MagickExport IndexPacket *GetPixelCacheNexusIndexes(const Cache cache, |
| 2641 | NexusInfo *nexus_info) |
| 2642 | { |
| 2643 | CacheInfo |
| 2644 | *cache_info; |
| 2645 | |
| 2646 | if (cache == (Cache) NULL) |
| 2647 | return((IndexPacket *) NULL); |
| 2648 | cache_info=(CacheInfo *) cache; |
| 2649 | assert(cache_info->signature == MagickSignature); |
| 2650 | if (cache_info->storage_class == UndefinedClass) |
| 2651 | return((IndexPacket *) NULL); |
| 2652 | return(nexus_info->indexes); |
| 2653 | } |
| 2654 | |
| 2655 | /* |
| 2656 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2657 | % % |
| 2658 | % % |
| 2659 | % % |
| 2660 | + G e t P i x e l C a c h e N e x u s P i x e l s % |
| 2661 | % % |
| 2662 | % % |
| 2663 | % % |
| 2664 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2665 | % |
| 2666 | % GetPixelCacheNexusPixels() returns the pixels associated with the specified |
| 2667 | % cache nexus. |
| 2668 | % |
| 2669 | % The format of the GetPixelCacheNexusPixels() method is: |
| 2670 | % |
| 2671 | % PixelPacket *GetPixelCacheNexusPixels(const Cache cache, |
| 2672 | % NexusInfo *nexus_info) |
| 2673 | % |
| 2674 | % A description of each parameter follows: |
| 2675 | % |
| 2676 | % o cache: the pixel cache. |
| 2677 | % |
| 2678 | % o nexus_info: the cache nexus to return the pixels. |
| 2679 | % |
| 2680 | */ |
| 2681 | MagickExport PixelPacket *GetPixelCacheNexusPixels(const Cache cache, |
| 2682 | NexusInfo *nexus_info) |
| 2683 | { |
| 2684 | CacheInfo |
| 2685 | *cache_info; |
| 2686 | |
| 2687 | if (cache == (Cache) NULL) |
| 2688 | return((PixelPacket *) NULL); |
| 2689 | cache_info=(CacheInfo *) cache; |
| 2690 | assert(cache_info->signature == MagickSignature); |
| 2691 | if (cache_info->debug != MagickFalse) |
| 2692 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2693 | cache_info->filename); |
| 2694 | if (cache_info->storage_class == UndefinedClass) |
| 2695 | return((PixelPacket *) NULL); |
| 2696 | return(nexus_info->pixels); |
| 2697 | } |
| 2698 | |
| 2699 | /* |
| 2700 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2701 | % % |
| 2702 | % % |
| 2703 | % % |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 2704 | + G e t P i x e l C a c h e S t o r a g e C l a s s % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2705 | % % |
| 2706 | % % |
| 2707 | % % |
| 2708 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2709 | % |
| 2710 | % GetPixelCacheStorageClass() returns the class type of the pixel cache. |
| 2711 | % |
| 2712 | % The format of the GetPixelCacheStorageClass() method is: |
| 2713 | % |
| 2714 | % ClassType GetPixelCacheStorageClass(Cache cache) |
| 2715 | % |
| 2716 | % A description of each parameter follows: |
| 2717 | % |
| 2718 | % o type: GetPixelCacheStorageClass returns DirectClass or PseudoClass. |
| 2719 | % |
| 2720 | % o cache: the pixel cache. |
| 2721 | % |
| 2722 | */ |
| 2723 | MagickExport ClassType GetPixelCacheStorageClass(const Cache cache) |
| 2724 | { |
| 2725 | CacheInfo |
| 2726 | *cache_info; |
| 2727 | |
| 2728 | assert(cache != (Cache) NULL); |
| 2729 | cache_info=(CacheInfo *) cache; |
| 2730 | assert(cache_info->signature == MagickSignature); |
| 2731 | if (cache_info->debug != MagickFalse) |
| 2732 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2733 | cache_info->filename); |
| 2734 | return(cache_info->storage_class); |
| 2735 | } |
| 2736 | |
| 2737 | /* |
| 2738 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2739 | % % |
| 2740 | % % |
| 2741 | % % |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 2742 | + G e t P i x e l C a c h e T i l e S i z e % |
| 2743 | % % |
| 2744 | % % |
| 2745 | % % |
| 2746 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2747 | % |
| 2748 | % GetPixelCacheTileSize() returns the pixel cache tile size. |
| 2749 | % |
| 2750 | % The format of the GetPixelCacheTileSize() method is: |
| 2751 | % |
| 2752 | % void GetPixelCacheTileSize(const Image *image,unsigned long *width, |
| 2753 | % unsigned long *height) |
| 2754 | % |
| 2755 | % A description of each parameter follows: |
| 2756 | % |
| 2757 | % o image: the image. |
| 2758 | % |
| 2759 | % o width: the optimize cache tile width in pixels. |
| 2760 | % |
| 2761 | % o height: the optimize cache tile height in pixels. |
| 2762 | % |
| 2763 | */ |
| 2764 | MagickExport void GetPixelCacheTileSize(const Image *image,unsigned long *width, |
| 2765 | unsigned long *height) |
| 2766 | { |
| 2767 | CacheInfo |
| 2768 | *cache_info; |
| 2769 | |
| 2770 | assert(image != (Image *) NULL); |
| 2771 | assert(image->signature == MagickSignature); |
| 2772 | if (image->debug != MagickFalse) |
| 2773 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2774 | assert(image->cache != (Cache) NULL); |
| 2775 | cache_info=(CacheInfo *) image->cache; |
| 2776 | assert(cache_info->signature == MagickSignature); |
| 2777 | *width=2048UL/sizeof(PixelPacket); |
| 2778 | if (GetPixelCacheType(image) == DiskCache) |
| 2779 | *width=8196UL/sizeof(PixelPacket); |
| 2780 | *height=(*width); |
| 2781 | } |
| 2782 | |
| 2783 | /* |
| 2784 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2785 | % % |
| 2786 | % % |
| 2787 | % % |
| 2788 | + G e t P i x e l C a c h e T y p e % |
| 2789 | % % |
| 2790 | % % |
| 2791 | % % |
| 2792 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2793 | % |
| 2794 | % GetPixelCacheType() returns the pixel cache type (e.g. memory, disk, etc.). |
| 2795 | % |
| 2796 | % The format of the GetPixelCacheType() method is: |
| 2797 | % |
| 2798 | % CacheType GetPixelCacheType(const Image *image) |
| 2799 | % |
| 2800 | % A description of each parameter follows: |
| 2801 | % |
| 2802 | % o image: the image. |
| 2803 | % |
| 2804 | */ |
| 2805 | MagickExport CacheType GetPixelCacheType(const Image *image) |
| 2806 | { |
| 2807 | CacheInfo |
| 2808 | *cache_info; |
| 2809 | |
| 2810 | assert(image != (Image *) NULL); |
| 2811 | assert(image->signature == MagickSignature); |
| 2812 | if (image->debug != MagickFalse) |
| 2813 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2814 | assert(image->cache != (Cache) NULL); |
| 2815 | cache_info=(CacheInfo *) image->cache; |
| 2816 | assert(cache_info->signature == MagickSignature); |
| 2817 | return(cache_info->type); |
| 2818 | } |
| 2819 | |
| 2820 | /* |
| 2821 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2822 | % % |
| 2823 | % % |
| 2824 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2825 | + G e t P i x e l C a c h e V i r t u a l M e t h o d % |
| 2826 | % % |
| 2827 | % % |
| 2828 | % % |
| 2829 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2830 | % |
| 2831 | % GetPixelCacheVirtualMethod() gets the "virtual pixels" method for the |
| 2832 | % pixel cache. A virtual pixel is any pixel access that is outside the |
| 2833 | % boundaries of the image cache. |
| 2834 | % |
| 2835 | % The format of the GetPixelCacheVirtualMethod() method is: |
| 2836 | % |
| 2837 | % VirtualPixelMethod GetPixelCacheVirtualMethod(const Image *image) |
| 2838 | % |
| 2839 | % A description of each parameter follows: |
| 2840 | % |
| 2841 | % o image: the image. |
| 2842 | % |
| 2843 | */ |
| 2844 | MagickExport VirtualPixelMethod GetPixelCacheVirtualMethod(const Image *image) |
| 2845 | { |
| 2846 | CacheInfo |
| 2847 | *cache_info; |
| 2848 | |
| 2849 | assert(image != (Image *) NULL); |
| 2850 | assert(image->signature == MagickSignature); |
| 2851 | if (image->debug != MagickFalse) |
| 2852 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2853 | assert(image->cache != (Cache) NULL); |
| 2854 | cache_info=(CacheInfo *) image->cache; |
| 2855 | assert(cache_info->signature == MagickSignature); |
| 2856 | return(cache_info->virtual_pixel_method); |
| 2857 | } |
| 2858 | |
| 2859 | /* |
| 2860 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2861 | % % |
| 2862 | % % |
| 2863 | % % |
| 2864 | + G e t V i r t u a l I n d e x e s F r o m C a c h e % |
| 2865 | % % |
| 2866 | % % |
| 2867 | % % |
| 2868 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2869 | % |
| 2870 | % GetVirtualIndexesFromCache() returns the indexes associated with the last |
| 2871 | % call to QueueAuthenticPixelsCache() or GetVirtualPixelCache(). |
| 2872 | % |
| 2873 | % The format of the GetVirtualIndexesFromCache() method is: |
| 2874 | % |
| 2875 | % IndexPacket *GetVirtualIndexesFromCache(const Image *image) |
| 2876 | % |
| 2877 | % A description of each parameter follows: |
| 2878 | % |
| 2879 | % o image: the image. |
| 2880 | % |
| 2881 | */ |
| 2882 | static const IndexPacket *GetVirtualIndexesFromCache(const Image *image) |
| 2883 | { |
| 2884 | CacheInfo |
| 2885 | *cache_info; |
| 2886 | |
| 2887 | const IndexPacket |
| 2888 | *indexes; |
| 2889 | |
| 2890 | long |
| 2891 | id; |
| 2892 | |
| 2893 | if (image->debug != MagickFalse) |
| 2894 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2895 | cache_info=(CacheInfo *) image->cache; |
| 2896 | id=GetOpenMPThreadId(); |
| 2897 | assert(id < (long) cache_info->number_threads); |
| 2898 | indexes=GetVirtualIndexesFromNexus(image->cache,cache_info->nexus_info[id]); |
| 2899 | return(indexes); |
| 2900 | } |
| 2901 | |
| 2902 | /* |
| 2903 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2904 | % % |
| 2905 | % % |
| 2906 | % % |
| 2907 | + G e t V i r t u a l I n d e x e s F r o m N e x u s % |
| 2908 | % % |
| 2909 | % % |
| 2910 | % % |
| 2911 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2912 | % |
| 2913 | % GetVirtualIndexesFromNexus() returns the indexes associated with the |
| 2914 | % specified cache nexus. |
| 2915 | % |
| 2916 | % The format of the GetVirtualIndexesFromNexus() method is: |
| 2917 | % |
| 2918 | % const IndexPacket *GetVirtualIndexesFromNexus(const Cache cache, |
| 2919 | % NexusInfo *nexus_info) |
| 2920 | % |
| 2921 | % A description of each parameter follows: |
| 2922 | % |
| 2923 | % o cache: the pixel cache. |
| 2924 | % |
| 2925 | % o nexus_info: the cache nexus to return the colormap indexes. |
| 2926 | % |
| 2927 | */ |
| 2928 | MagickExport const IndexPacket *GetVirtualIndexesFromNexus(const Cache cache, |
| 2929 | NexusInfo *nexus_info) |
| 2930 | { |
| 2931 | CacheInfo |
| 2932 | *cache_info; |
| 2933 | |
| 2934 | if (cache == (Cache) NULL) |
| 2935 | return((IndexPacket *) NULL); |
| 2936 | cache_info=(CacheInfo *) cache; |
| 2937 | assert(cache_info->signature == MagickSignature); |
| 2938 | if (cache_info->storage_class == UndefinedClass) |
| 2939 | return((IndexPacket *) NULL); |
| 2940 | return(nexus_info->indexes); |
| 2941 | } |
| 2942 | |
| 2943 | /* |
| 2944 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2945 | % % |
| 2946 | % % |
| 2947 | % % |
| 2948 | % G e t V i r t u a l I n d e x Q u e u e % |
| 2949 | % % |
| 2950 | % % |
| 2951 | % % |
| 2952 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2953 | % |
| 2954 | % GetVirtualIndexQueue() returns the virtual black channel or the |
| 2955 | % colormap indexes associated with the last call to QueueAuthenticPixels() or |
| 2956 | % GetVirtualPixels(). NULL is returned if the black channel or colormap |
| 2957 | % indexes are not available. |
| 2958 | % |
| 2959 | % The format of the GetVirtualIndexQueue() method is: |
| 2960 | % |
| 2961 | % const IndexPacket *GetVirtualIndexQueue(const Image *image) |
| 2962 | % |
| 2963 | % A description of each parameter follows: |
| 2964 | % |
| 2965 | % o image: the image. |
| 2966 | % |
| 2967 | */ |
| 2968 | MagickExport const IndexPacket *GetVirtualIndexQueue(const Image *image) |
| 2969 | { |
| 2970 | CacheInfo |
| 2971 | *cache_info; |
| 2972 | |
| 2973 | assert(image != (const Image *) NULL); |
| 2974 | assert(image->signature == MagickSignature); |
| 2975 | if (image->debug != MagickFalse) |
| 2976 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2977 | assert(image->cache != (Cache) NULL); |
| 2978 | cache_info=(CacheInfo *) image->cache; |
| 2979 | assert(cache_info->signature == MagickSignature); |
| 2980 | if (cache_info->methods.get_virtual_indexes_from_handler == |
| 2981 | (GetVirtualIndexesFromHandler) NULL) |
| 2982 | return((IndexPacket *) NULL); |
| 2983 | return(cache_info->methods.get_virtual_indexes_from_handler(image)); |
| 2984 | } |
| 2985 | |
| 2986 | /* |
| 2987 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2988 | % % |
| 2989 | % % |
| 2990 | % % |
| 2991 | + G e t V i r t u a l P i x e l s F r o m N e x u s % |
| 2992 | % % |
| 2993 | % % |
| 2994 | % % |
| 2995 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2996 | % |
| 2997 | % GetVirtualPixelsFromNexus() gets virtual pixels from the in-memory or disk |
| 2998 | % pixel cache as defined by the geometry parameters. A pointer to the pixels |
| 2999 | % is returned if the pixels are transferred, otherwise a NULL is returned. |
| 3000 | % |
| 3001 | % The format of the GetVirtualPixelsFromNexus() method is: |
| 3002 | % |
| 3003 | % PixelPacket *GetVirtualPixelsFromNexus(const Image *image, |
| 3004 | % const VirtualPixelMethod method,const long x,const long y, |
| 3005 | % const unsigned long columns,const unsigned long rows, |
| 3006 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 3007 | % |
| 3008 | % A description of each parameter follows: |
| 3009 | % |
| 3010 | % o image: the image. |
| 3011 | % |
| 3012 | % o virtual_pixel_method: the virtual pixel method. |
| 3013 | % |
| 3014 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 3015 | % pixels. |
| 3016 | % |
| 3017 | % o nexus_info: the cache nexus to acquire. |
| 3018 | % |
| 3019 | % o exception: return any errors or warnings in this structure. |
| 3020 | % |
| 3021 | */ |
| 3022 | |
| 3023 | static long |
| 3024 | DitherMatrix[64] = |
| 3025 | { |
| 3026 | 0, 48, 12, 60, 3, 51, 15, 63, |
| 3027 | 32, 16, 44, 28, 35, 19, 47, 31, |
| 3028 | 8, 56, 4, 52, 11, 59, 7, 55, |
| 3029 | 40, 24, 36, 20, 43, 27, 39, 23, |
| 3030 | 2, 50, 14, 62, 1, 49, 13, 61, |
| 3031 | 34, 18, 46, 30, 33, 17, 45, 29, |
| 3032 | 10, 58, 6, 54, 9, 57, 5, 53, |
| 3033 | 42, 26, 38, 22, 41, 25, 37, 21 |
| 3034 | }; |
| 3035 | |
| 3036 | static inline long DitherX(const unsigned long columns,const long x) |
| 3037 | { |
| 3038 | long |
| 3039 | index; |
| 3040 | |
| 3041 | index=x+DitherMatrix[x & 0x07]-32L; |
| 3042 | if (index < 0L) |
| 3043 | return(0L); |
| 3044 | if (index >= (long) columns) |
| 3045 | return((long) columns-1L); |
| 3046 | return(index); |
| 3047 | } |
| 3048 | |
| 3049 | static inline long DitherY(const unsigned long rows,const long y) |
| 3050 | { |
| 3051 | long |
| 3052 | index; |
| 3053 | |
| 3054 | index=y+DitherMatrix[y & 0x07]-32L; |
| 3055 | if (index < 0L) |
| 3056 | return(0L); |
| 3057 | if (index >= (long) rows) |
| 3058 | return((long) rows-1L); |
| 3059 | return(index); |
| 3060 | } |
| 3061 | |
| 3062 | static inline long EdgeX(const unsigned long columns,const long x) |
| 3063 | { |
| 3064 | if (x < 0L) |
| 3065 | return(0L); |
| 3066 | if (x >= (long) columns) |
| 3067 | return((long) columns-1L); |
| 3068 | return(x); |
| 3069 | } |
| 3070 | |
| 3071 | static inline long EdgeY(const unsigned long rows,const long y) |
| 3072 | { |
| 3073 | if (y < 0L) |
| 3074 | return(0L); |
| 3075 | if (y >= (long) rows) |
| 3076 | return((long) rows-1L); |
| 3077 | return(y); |
| 3078 | } |
| 3079 | |
| 3080 | static inline long RandomX(const unsigned long columns,RandomInfo *random_info) |
| 3081 | { |
| 3082 | return((long) (columns*GetPseudoRandomValue(random_info))); |
| 3083 | } |
| 3084 | |
| 3085 | static inline long RandomY(const unsigned long rows,RandomInfo *random_info) |
| 3086 | { |
| 3087 | return((long) (rows*GetPseudoRandomValue(random_info))); |
| 3088 | } |
| 3089 | |
| 3090 | /* |
| 3091 | VirtualPixelModulo() computes the remainder of dividing offset by extent. It |
| 3092 | returns not only the quotient (tile the offset falls in) but also the positive |
| 3093 | remainer within that tile such that 0 <= remainder < extent. This method is |
| 3094 | essentially a ldiv() using a floored modulo division rather than the normal |
| 3095 | default truncated modulo division. |
| 3096 | */ |
| 3097 | static inline MagickModulo VirtualPixelModulo(const long offset, |
| 3098 | const unsigned long extent) |
| 3099 | { |
| 3100 | MagickModulo |
| 3101 | modulo; |
| 3102 | |
| 3103 | modulo.quotient=offset/(long) extent; |
| 3104 | if (offset < 0L) |
| 3105 | modulo.quotient--; |
| 3106 | modulo.remainder=offset-modulo.quotient*(long) extent; |
| 3107 | return(modulo); |
| 3108 | } |
| 3109 | |
| 3110 | MagickExport const PixelPacket *GetVirtualPixelsFromNexus(const Image *image, |
| 3111 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 3112 | const unsigned long columns,const unsigned long rows,NexusInfo *nexus_info, |
| 3113 | ExceptionInfo *exception) |
| 3114 | { |
| 3115 | CacheInfo |
| 3116 | *cache_info; |
| 3117 | |
| 3118 | MagickOffsetType |
| 3119 | offset; |
| 3120 | |
| 3121 | MagickSizeType |
| 3122 | length, |
| 3123 | number_pixels; |
| 3124 | |
| 3125 | NexusInfo |
| 3126 | **virtual_nexus; |
| 3127 | |
| 3128 | PixelPacket |
| 3129 | *pixels, |
| 3130 | virtual_pixel; |
| 3131 | |
| 3132 | RectangleInfo |
| 3133 | region; |
| 3134 | |
| 3135 | register const IndexPacket |
| 3136 | *__restrict nexus_indexes; |
| 3137 | |
| 3138 | register const PixelPacket |
| 3139 | *__restrict p; |
| 3140 | |
| 3141 | register IndexPacket |
| 3142 | *__restrict indexes; |
| 3143 | |
| 3144 | register long |
| 3145 | u, |
| 3146 | v; |
| 3147 | |
| 3148 | register PixelPacket |
| 3149 | *__restrict q; |
| 3150 | |
| 3151 | /* |
| 3152 | Acquire pixels. |
| 3153 | */ |
| 3154 | if (image->debug != MagickFalse) |
| 3155 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3156 | cache_info=(CacheInfo *) image->cache; |
| 3157 | if (cache_info->type == UndefinedCache) |
| 3158 | return((const PixelPacket *) NULL); |
| 3159 | region.x=x; |
| 3160 | region.y=y; |
| 3161 | region.width=columns; |
| 3162 | region.height=rows; |
| 3163 | pixels=SetPixelCacheNexusPixels(image,®ion,nexus_info,exception); |
| 3164 | if (pixels == (PixelPacket *) NULL) |
| 3165 | return((const PixelPacket *) NULL); |
| 3166 | offset=(MagickOffsetType) region.y*cache_info->columns+region.x; |
| 3167 | length=(MagickSizeType) (region.height-1)*cache_info->columns+region.width-1; |
| 3168 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 3169 | if ((offset >= 0) && (((MagickSizeType) offset+length) < number_pixels)) |
| 3170 | if ((x >= 0) && ((long) (x+columns) <= (long) cache_info->columns) && |
| 3171 | (y >= 0) && ((long) (y+rows) <= (long) cache_info->rows)) |
| 3172 | { |
| 3173 | MagickBooleanType |
| 3174 | status; |
| 3175 | |
| 3176 | /* |
| 3177 | Pixel request is inside cache extents. |
| 3178 | */ |
| 3179 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 3180 | return(pixels); |
| 3181 | status=ReadPixelCachePixels(cache_info,nexus_info,exception); |
| 3182 | if (status == MagickFalse) |
| 3183 | return((const PixelPacket *) NULL); |
| 3184 | if ((cache_info->storage_class == PseudoClass) || |
| 3185 | (cache_info->colorspace == CMYKColorspace)) |
| 3186 | { |
| 3187 | status=ReadPixelCacheIndexes(cache_info,nexus_info,exception); |
| 3188 | if (status == MagickFalse) |
| 3189 | return((const PixelPacket *) NULL); |
| 3190 | } |
| 3191 | return(pixels); |
| 3192 | } |
| 3193 | /* |
| 3194 | Pixel request is outside cache extents. |
| 3195 | */ |
| 3196 | q=pixels; |
| 3197 | indexes=GetPixelCacheNexusIndexes(cache_info,nexus_info); |
| 3198 | virtual_nexus=AcquirePixelCacheNexus(1); |
| 3199 | if (virtual_nexus == (NexusInfo **) NULL) |
| 3200 | { |
| 3201 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 3202 | "UnableToGetCacheNexus","`%s'",image->filename); |
| 3203 | return((const PixelPacket *) NULL); |
| 3204 | } |
| 3205 | switch (virtual_pixel_method) |
| 3206 | { |
| 3207 | case BlackVirtualPixelMethod: |
| 3208 | { |
| 3209 | virtual_pixel.red=0; |
| 3210 | virtual_pixel.green=0; |
| 3211 | virtual_pixel.blue=0; |
| 3212 | virtual_pixel.opacity=OpaqueOpacity; |
| 3213 | break; |
| 3214 | } |
| 3215 | case GrayVirtualPixelMethod: |
| 3216 | { |
| 3217 | virtual_pixel.red=(Quantum) QuantumRange/2; |
| 3218 | virtual_pixel.green=(Quantum) QuantumRange/2; |
| 3219 | virtual_pixel.blue=(Quantum) QuantumRange/2; |
| 3220 | virtual_pixel.opacity=(Quantum) OpaqueOpacity; |
| 3221 | break; |
| 3222 | } |
| 3223 | case TransparentVirtualPixelMethod: |
| 3224 | { |
| 3225 | virtual_pixel.red=(Quantum) 0; |
| 3226 | virtual_pixel.green=(Quantum) 0; |
| 3227 | virtual_pixel.blue=(Quantum) 0; |
| 3228 | virtual_pixel.opacity=(Quantum) TransparentOpacity; |
| 3229 | break; |
| 3230 | } |
| 3231 | case MaskVirtualPixelMethod: |
| 3232 | case WhiteVirtualPixelMethod: |
| 3233 | { |
| 3234 | virtual_pixel.red=(Quantum) QuantumRange; |
| 3235 | virtual_pixel.green=(Quantum) QuantumRange; |
| 3236 | virtual_pixel.blue=(Quantum) QuantumRange; |
| 3237 | virtual_pixel.opacity=OpaqueOpacity; |
| 3238 | break; |
| 3239 | } |
| 3240 | default: |
| 3241 | { |
| 3242 | virtual_pixel=image->background_color; |
| 3243 | break; |
| 3244 | } |
| 3245 | } |
| 3246 | for (v=0; v < (long) rows; v++) |
| 3247 | { |
| 3248 | for (u=0; u < (long) columns; u+=length) |
| 3249 | { |
| 3250 | length=(MagickSizeType) MagickMin(cache_info->columns-(x+u),columns-u); |
| 3251 | if ((((x+u) < 0) || ((x+u) >= (long) cache_info->columns)) || |
| 3252 | (((y+v) < 0) || ((y+v) >= (long) cache_info->rows)) || (length == 0)) |
| 3253 | { |
| 3254 | MagickModulo |
| 3255 | x_modulo, |
| 3256 | y_modulo; |
| 3257 | |
| 3258 | /* |
| 3259 | Transfer a single pixel. |
| 3260 | */ |
| 3261 | length=(MagickSizeType) 1; |
| 3262 | switch (virtual_pixel_method) |
| 3263 | { |
| 3264 | case BackgroundVirtualPixelMethod: |
| 3265 | case ConstantVirtualPixelMethod: |
| 3266 | case BlackVirtualPixelMethod: |
| 3267 | case GrayVirtualPixelMethod: |
| 3268 | case TransparentVirtualPixelMethod: |
| 3269 | case MaskVirtualPixelMethod: |
| 3270 | case WhiteVirtualPixelMethod: |
| 3271 | { |
| 3272 | p=(&virtual_pixel); |
| 3273 | break; |
| 3274 | } |
| 3275 | case EdgeVirtualPixelMethod: |
| 3276 | default: |
| 3277 | { |
| 3278 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3279 | EdgeX(cache_info->columns,x+u),EdgeY(cache_info->rows,y+v), |
| 3280 | 1UL,1UL,virtual_nexus[0],exception); |
| 3281 | break; |
| 3282 | } |
| 3283 | case RandomVirtualPixelMethod: |
| 3284 | { |
| 3285 | if (cache_info->random_info == (RandomInfo *) NULL) |
| 3286 | cache_info->random_info=AcquireRandomInfo(); |
| 3287 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3288 | RandomX(cache_info->columns,cache_info->random_info), |
| 3289 | RandomY(cache_info->rows,cache_info->random_info),1UL,1UL, |
| 3290 | virtual_nexus[0],exception); |
| 3291 | break; |
| 3292 | } |
| 3293 | case DitherVirtualPixelMethod: |
| 3294 | { |
| 3295 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3296 | DitherX(cache_info->columns,x+u),DitherY(cache_info->rows,y+v), |
| 3297 | 1UL,1UL,virtual_nexus[0],exception); |
| 3298 | break; |
| 3299 | } |
| 3300 | case TileVirtualPixelMethod: |
| 3301 | { |
| 3302 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3303 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3304 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3305 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3306 | exception); |
| 3307 | break; |
| 3308 | } |
| 3309 | case MirrorVirtualPixelMethod: |
| 3310 | { |
| 3311 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3312 | if ((x_modulo.quotient & 0x01) == 1L) |
| 3313 | x_modulo.remainder=(long) cache_info->columns- |
| 3314 | x_modulo.remainder-1L; |
| 3315 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3316 | if ((y_modulo.quotient & 0x01) == 1L) |
| 3317 | y_modulo.remainder=(long) cache_info->rows- |
| 3318 | y_modulo.remainder-1L; |
| 3319 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3320 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3321 | exception); |
| 3322 | break; |
| 3323 | } |
| 3324 | case CheckerTileVirtualPixelMethod: |
| 3325 | { |
| 3326 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3327 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3328 | if (((x_modulo.quotient ^ y_modulo.quotient) & 0x01) != 0L) |
| 3329 | { |
| 3330 | p=(&virtual_pixel); |
| 3331 | break; |
| 3332 | } |
| 3333 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3334 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3335 | exception); |
| 3336 | break; |
| 3337 | } |
| 3338 | case HorizontalTileVirtualPixelMethod: |
| 3339 | { |
| 3340 | if (((y+v) < 0) || ((y+v) >= (long) cache_info->rows)) |
| 3341 | { |
| 3342 | p=(&virtual_pixel); |
| 3343 | break; |
| 3344 | } |
| 3345 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3346 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3347 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3348 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3349 | exception); |
| 3350 | break; |
| 3351 | } |
| 3352 | case VerticalTileVirtualPixelMethod: |
| 3353 | { |
| 3354 | if (((x+u) < 0) || ((x+u) >= (long) cache_info->columns)) |
| 3355 | { |
| 3356 | p=(&virtual_pixel); |
| 3357 | break; |
| 3358 | } |
| 3359 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3360 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3361 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3362 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3363 | exception); |
| 3364 | break; |
| 3365 | } |
| 3366 | case HorizontalTileEdgeVirtualPixelMethod: |
| 3367 | { |
| 3368 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3369 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3370 | x_modulo.remainder,EdgeY(cache_info->rows,y+v),1UL,1UL, |
| 3371 | virtual_nexus[0],exception); |
| 3372 | break; |
| 3373 | } |
| 3374 | case VerticalTileEdgeVirtualPixelMethod: |
| 3375 | { |
| 3376 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3377 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3378 | EdgeX(cache_info->columns,x+u),y_modulo.remainder,1UL,1UL, |
| 3379 | virtual_nexus[0],exception); |
| 3380 | break; |
| 3381 | } |
| 3382 | } |
| 3383 | if (p == (const PixelPacket *) NULL) |
| 3384 | break; |
| 3385 | *q++=(*p); |
| 3386 | if (indexes != (IndexPacket *) NULL) |
| 3387 | { |
| 3388 | nexus_indexes=GetVirtualIndexesFromNexus(cache_info, |
| 3389 | virtual_nexus[0]); |
| 3390 | if (nexus_indexes != (const IndexPacket *) NULL) |
| 3391 | *indexes++=(*nexus_indexes); |
| 3392 | } |
| 3393 | continue; |
| 3394 | } |
| 3395 | /* |
| 3396 | Transfer a run of pixels. |
| 3397 | */ |
| 3398 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method,x+u,y+v, |
| 3399 | (unsigned long) length,1UL,virtual_nexus[0],exception); |
| 3400 | if (p == (const PixelPacket *) NULL) |
| 3401 | break; |
| 3402 | (void) CopyMagickMemory(q,p,(size_t) length*sizeof(*p)); |
| 3403 | q+=length; |
| 3404 | if (indexes != (IndexPacket *) NULL) |
| 3405 | { |
| 3406 | nexus_indexes=GetVirtualIndexesFromNexus(cache_info,virtual_nexus[0]); |
| 3407 | if (nexus_indexes != (const IndexPacket *) NULL) |
| 3408 | { |
| 3409 | (void) CopyMagickMemory(indexes,nexus_indexes,(size_t) length* |
| 3410 | sizeof(*nexus_indexes)); |
| 3411 | indexes+=length; |
| 3412 | } |
| 3413 | } |
| 3414 | } |
| 3415 | } |
| 3416 | virtual_nexus=DestroyPixelCacheNexus(virtual_nexus,1); |
| 3417 | return(pixels); |
| 3418 | } |
| 3419 | |
| 3420 | /* |
| 3421 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3422 | % % |
| 3423 | % % |
| 3424 | % % |
| 3425 | + G e t V i r t u a l P i x e l C a c h e % |
| 3426 | % % |
| 3427 | % % |
| 3428 | % % |
| 3429 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3430 | % |
| 3431 | % GetVirtualPixelCache() get virtual pixels from the in-memory or disk pixel |
| 3432 | % cache as defined by the geometry parameters. A pointer to the pixels |
| 3433 | % is returned if the pixels are transferred, otherwise a NULL is returned. |
| 3434 | % |
| 3435 | % The format of the GetVirtualPixelCache() method is: |
| 3436 | % |
| 3437 | % const PixelPacket *GetVirtualPixelCache(const Image *image, |
| 3438 | % const VirtualPixelMethod virtual_pixel_method,const long x, |
| 3439 | % const long y,const unsigned long columns,const unsigned long rows, |
| 3440 | % ExceptionInfo *exception) |
| 3441 | % |
| 3442 | % A description of each parameter follows: |
| 3443 | % |
| 3444 | % o image: the image. |
| 3445 | % |
| 3446 | % o virtual_pixel_method: the virtual pixel method. |
| 3447 | % |
| 3448 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 3449 | % pixels. |
| 3450 | % |
| 3451 | % o exception: return any errors or warnings in this structure. |
| 3452 | % |
| 3453 | */ |
| 3454 | static const PixelPacket *GetVirtualPixelCache(const Image *image, |
| 3455 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 3456 | const unsigned long columns,const unsigned long rows,ExceptionInfo *exception) |
| 3457 | { |
| 3458 | CacheInfo |
| 3459 | *cache_info; |
| 3460 | |
| 3461 | const PixelPacket |
| 3462 | *pixels; |
| 3463 | |
| 3464 | long |
| 3465 | id; |
| 3466 | |
| 3467 | if (image->debug != MagickFalse) |
| 3468 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3469 | cache_info=(CacheInfo *) image->cache; |
| 3470 | id=GetOpenMPThreadId(); |
| 3471 | assert(id < (long) cache_info->number_threads); |
| 3472 | pixels=GetVirtualPixelsFromNexus(image,virtual_pixel_method,x,y,columns,rows, |
| 3473 | cache_info->nexus_info[id],exception); |
| 3474 | return(pixels); |
| 3475 | } |
| 3476 | |
| 3477 | /* |
| 3478 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3479 | % % |
| 3480 | % % |
| 3481 | % % |
| 3482 | % G e t V i r t u a l P i x e l Q u e u e % |
| 3483 | % % |
| 3484 | % % |
| 3485 | % % |
| 3486 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3487 | % |
| 3488 | % GetVirtualPixelQueue() returns the virtual pixels associated with the |
| 3489 | % last call to QueueAuthenticPixels() or GetVirtualPixels(). |
| 3490 | % |
| 3491 | % The format of the GetVirtualPixelQueue() method is: |
| 3492 | % |
| 3493 | % const PixelPacket *GetVirtualPixelQueue(const Image image) |
| 3494 | % |
| 3495 | % A description of each parameter follows: |
| 3496 | % |
| 3497 | % o image: the image. |
| 3498 | % |
| 3499 | */ |
| 3500 | MagickExport const PixelPacket *GetVirtualPixelQueue(const Image *image) |
| 3501 | { |
| 3502 | CacheInfo |
| 3503 | *cache_info; |
| 3504 | |
| 3505 | assert(image != (const Image *) NULL); |
| 3506 | assert(image->signature == MagickSignature); |
| 3507 | if (image->debug != MagickFalse) |
| 3508 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3509 | assert(image->cache != (Cache) NULL); |
| 3510 | cache_info=(CacheInfo *) image->cache; |
| 3511 | assert(cache_info->signature == MagickSignature); |
| 3512 | if (cache_info->methods.get_virtual_pixels_handler == |
| 3513 | (GetVirtualPixelsHandler) NULL) |
| 3514 | return((PixelPacket *) NULL); |
| 3515 | return(cache_info->methods.get_virtual_pixels_handler(image)); |
| 3516 | } |
| 3517 | |
| 3518 | /* |
| 3519 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3520 | % % |
| 3521 | % % |
| 3522 | % % |
| 3523 | % G e t V i r t u a l P i x e l s % |
| 3524 | % % |
| 3525 | % % |
| 3526 | % % |
| 3527 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3528 | % |
| 3529 | % GetVirtualPixels() returns an immutable pixel region. If the |
| 3530 | % region is successfully accessed, a pointer to it is returned, otherwise |
| 3531 | % NULL is returned. The returned pointer may point to a temporary working |
| 3532 | % copy of the pixels or it may point to the original pixels in memory. |
| 3533 | % Performance is maximized if the selected region is part of one row, or one |
| 3534 | % or more full rows, since there is opportunity to access the pixels in-place |
| 3535 | % (without a copy) if the image is in RAM, or in a memory-mapped file. The |
| 3536 | % returned pointer should *never* be deallocated by the user. |
| 3537 | % |
| 3538 | % Pixels accessed via the returned pointer represent a simple array of type |
| 3539 | % PixelPacket. If the image type is CMYK or the storage class is PseudoClass, |
| 3540 | % call GetAuthenticIndexQueue() after invoking GetAuthenticPixels() to access |
| 3541 | % the black color component or to obtain the colormap indexes (of type |
| 3542 | % IndexPacket) corresponding to the region. |
| 3543 | % |
| 3544 | % If you plan to modify the pixels, use GetAuthenticPixels() instead. |
| 3545 | % |
| 3546 | % Note, the GetVirtualPixels() and GetAuthenticPixels() methods are not thread- |
| 3547 | % safe. In a threaded environment, use GetCacheViewVirtualPixels() or |
| 3548 | % GetCacheViewAuthenticPixels() instead. |
| 3549 | % |
| 3550 | % The format of the GetVirtualPixels() method is: |
| 3551 | % |
| 3552 | % const PixelPacket *GetVirtualPixels(const Image *image,const long x, |
| 3553 | % const long y,const unsigned long columns,const unsigned long rows, |
| 3554 | % ExceptionInfo *exception) |
| 3555 | % |
| 3556 | % A description of each parameter follows: |
| 3557 | % |
| 3558 | % o image: the image. |
| 3559 | % |
| 3560 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 3561 | % pixels. |
| 3562 | % |
| 3563 | % o exception: return any errors or warnings in this structure. |
| 3564 | % |
| 3565 | */ |
| 3566 | MagickExport const PixelPacket *GetVirtualPixels(const Image *image, |
| 3567 | const long x,const long y,const unsigned long columns, |
| 3568 | const unsigned long rows,ExceptionInfo *exception) |
| 3569 | { |
| 3570 | CacheInfo |
| 3571 | *cache_info; |
| 3572 | |
| 3573 | const PixelPacket |
| 3574 | *pixels; |
| 3575 | |
| 3576 | assert(image != (const Image *) NULL); |
| 3577 | assert(image->signature == MagickSignature); |
| 3578 | if (image->debug != MagickFalse) |
| 3579 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3580 | assert(image->cache != (Cache) NULL); |
| 3581 | cache_info=(CacheInfo *) image->cache; |
| 3582 | assert(cache_info->signature == MagickSignature); |
| 3583 | if (cache_info->methods.get_virtual_pixel_handler == |
| 3584 | (GetVirtualPixelHandler) NULL) |
| 3585 | return((const PixelPacket *) NULL); |
| 3586 | pixels=cache_info->methods.get_virtual_pixel_handler(image, |
| 3587 | GetPixelCacheVirtualMethod(image),x,y,columns,rows,exception); |
| 3588 | return(pixels); |
| 3589 | } |
| 3590 | |
| 3591 | /* |
| 3592 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3593 | % % |
| 3594 | % % |
| 3595 | % % |
| 3596 | + G e t V i r t u a l P i x e l s F r o m C a c h e % |
| 3597 | % % |
| 3598 | % % |
| 3599 | % % |
| 3600 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3601 | % |
| 3602 | % GetVirtualPixelsCache() returns the pixels associated with the last call |
| 3603 | % to QueueAuthenticPixelsCache() or GetVirtualPixelCache(). |
| 3604 | % |
| 3605 | % The format of the GetVirtualPixelsCache() method is: |
| 3606 | % |
| 3607 | % PixelPacket *GetVirtualPixelsCache(const Image *image) |
| 3608 | % |
| 3609 | % A description of each parameter follows: |
| 3610 | % |
| 3611 | % o image: the image. |
| 3612 | % |
| 3613 | */ |
| 3614 | static const PixelPacket *GetVirtualPixelsCache(const Image *image) |
| 3615 | { |
| 3616 | CacheInfo |
| 3617 | *cache_info; |
| 3618 | |
| 3619 | const PixelPacket |
| 3620 | *pixels; |
| 3621 | |
| 3622 | long |
| 3623 | id; |
| 3624 | |
| 3625 | if (image->debug != MagickFalse) |
| 3626 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3627 | cache_info=(CacheInfo *) image->cache; |
| 3628 | id=GetOpenMPThreadId(); |
| 3629 | assert(id < (long) cache_info->number_threads); |
| 3630 | pixels=GetVirtualPixelsNexus(image->cache,cache_info->nexus_info[id]); |
| 3631 | return(pixels); |
| 3632 | } |
| 3633 | |
| 3634 | /* |
| 3635 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3636 | % % |
| 3637 | % % |
| 3638 | % % |
| 3639 | + G e t V i r t u a l P i x e l s N e x u s % |
| 3640 | % % |
| 3641 | % % |
| 3642 | % % |
| 3643 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3644 | % |
| 3645 | % GetVirtualPixelsNexus() returns the pixels associated with the specified |
| 3646 | % cache nexus. |
| 3647 | % |
| 3648 | % The format of the GetVirtualPixelsNexus() method is: |
| 3649 | % |
| 3650 | % const IndexPacket *GetVirtualPixelsNexus(const Cache cache, |
| 3651 | % NexusInfo *nexus_info) |
| 3652 | % |
| 3653 | % A description of each parameter follows: |
| 3654 | % |
| 3655 | % o cache: the pixel cache. |
| 3656 | % |
| 3657 | % o nexus_info: the cache nexus to return the colormap pixels. |
| 3658 | % |
| 3659 | */ |
| 3660 | MagickExport const PixelPacket *GetVirtualPixelsNexus(const Cache cache, |
| 3661 | NexusInfo *nexus_info) |
| 3662 | { |
| 3663 | CacheInfo |
| 3664 | *cache_info; |
| 3665 | |
| 3666 | if (cache == (Cache) NULL) |
| 3667 | return((PixelPacket *) NULL); |
| 3668 | cache_info=(CacheInfo *) cache; |
| 3669 | assert(cache_info->signature == MagickSignature); |
| 3670 | if (cache_info->storage_class == UndefinedClass) |
| 3671 | return((PixelPacket *) NULL); |
| 3672 | return((const PixelPacket *) nexus_info->pixels); |
| 3673 | } |
| 3674 | |
| 3675 | /* |
| 3676 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3677 | % % |
| 3678 | % % |
| 3679 | % % |
| 3680 | + M a s k P i x e l C a c h e N e x u s % |
| 3681 | % % |
| 3682 | % % |
| 3683 | % % |
| 3684 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3685 | % |
| 3686 | % MaskPixelCacheNexus() masks the cache nexus as defined by the image mask. |
| 3687 | % The method returns MagickTrue if the pixel region is masked, otherwise |
| 3688 | % MagickFalse. |
| 3689 | % |
| 3690 | % The format of the MaskPixelCacheNexus() method is: |
| 3691 | % |
| 3692 | % MagickBooleanType MaskPixelCacheNexus(Image *image, |
| 3693 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 3694 | % |
| 3695 | % A description of each parameter follows: |
| 3696 | % |
| 3697 | % o image: the image. |
| 3698 | % |
| 3699 | % o nexus_info: the cache nexus to clip. |
| 3700 | % |
| 3701 | % o exception: return any errors or warnings in this structure. |
| 3702 | % |
| 3703 | */ |
| 3704 | |
| 3705 | static inline void MagickPixelCompositeMask(const MagickPixelPacket *p, |
| 3706 | const MagickRealType alpha,const MagickPixelPacket *q, |
| 3707 | const MagickRealType beta,MagickPixelPacket *composite) |
| 3708 | { |
| 3709 | MagickRealType |
| 3710 | gamma; |
| 3711 | |
| 3712 | if (alpha == TransparentOpacity) |
| 3713 | { |
| 3714 | *composite=(*q); |
| 3715 | return; |
| 3716 | } |
| 3717 | gamma=1.0-QuantumScale*QuantumScale*alpha*beta; |
| 3718 | gamma=1.0/(gamma <= MagickEpsilon ? 1.0 : gamma); |
| 3719 | composite->red=gamma*MagickOver_(p->red,alpha,q->red,beta); |
| 3720 | composite->green=gamma*MagickOver_(p->green,alpha,q->green,beta); |
| 3721 | composite->blue=gamma*MagickOver_(p->blue,alpha,q->blue,beta); |
| 3722 | if ((p->colorspace == CMYKColorspace) && (q->colorspace == CMYKColorspace)) |
| 3723 | composite->index=gamma*MagickOver_(p->index,alpha,q->index,beta); |
| 3724 | } |
| 3725 | |
| 3726 | static MagickBooleanType MaskPixelCacheNexus(Image *image,NexusInfo *nexus_info, |
| 3727 | ExceptionInfo *exception) |
| 3728 | { |
| 3729 | CacheInfo |
| 3730 | *cache_info; |
| 3731 | |
| 3732 | MagickPixelPacket |
| 3733 | alpha, |
| 3734 | beta; |
| 3735 | |
| 3736 | MagickSizeType |
| 3737 | number_pixels; |
| 3738 | |
| 3739 | NexusInfo |
| 3740 | **clip_nexus, |
| 3741 | **image_nexus; |
| 3742 | |
| 3743 | register const PixelPacket |
| 3744 | *__restrict r; |
| 3745 | |
| 3746 | register IndexPacket |
| 3747 | *__restrict nexus_indexes, |
| 3748 | *__restrict indexes; |
| 3749 | |
| 3750 | register long |
| 3751 | i; |
| 3752 | |
| 3753 | register PixelPacket |
| 3754 | *__restrict p, |
| 3755 | *__restrict q; |
| 3756 | |
| 3757 | /* |
| 3758 | Apply clip mask. |
| 3759 | */ |
| 3760 | if (image->debug != MagickFalse) |
| 3761 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3762 | if (image->mask == (Image *) NULL) |
| 3763 | return(MagickFalse); |
| 3764 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickTrue,exception); |
| 3765 | if (cache_info == (Cache) NULL) |
| 3766 | return(MagickFalse); |
| 3767 | image_nexus=AcquirePixelCacheNexus(1); |
| 3768 | clip_nexus=AcquirePixelCacheNexus(1); |
| 3769 | if ((image_nexus == (NexusInfo **) NULL) || |
| 3770 | (clip_nexus == (NexusInfo **) NULL)) |
| 3771 | ThrowBinaryException(CacheError,"UnableToGetCacheNexus",image->filename); |
| 3772 | p=GetAuthenticPixelCacheNexus(image,nexus_info->region.x,nexus_info->region.y, |
| 3773 | nexus_info->region.width,nexus_info->region.height,image_nexus[0], |
| 3774 | exception); |
| 3775 | indexes=GetPixelCacheNexusIndexes(image->cache,image_nexus[0]); |
| 3776 | q=nexus_info->pixels; |
| 3777 | nexus_indexes=nexus_info->indexes; |
| 3778 | r=GetVirtualPixelsFromNexus(image->mask,MaskVirtualPixelMethod, |
| 3779 | nexus_info->region.x,nexus_info->region.y,nexus_info->region.width, |
| 3780 | nexus_info->region.height,clip_nexus[0],&image->exception); |
| 3781 | GetMagickPixelPacket(image,&alpha); |
| 3782 | GetMagickPixelPacket(image,&beta); |
| 3783 | number_pixels=(MagickSizeType) nexus_info->region.width* |
| 3784 | nexus_info->region.height; |
| 3785 | for (i=0; i < (long) number_pixels; i++) |
| 3786 | { |
| 3787 | if ((p == (PixelPacket *) NULL) || (r == (const PixelPacket *) NULL)) |
| 3788 | break; |
| 3789 | SetMagickPixelPacket(image,p,indexes+i,&alpha); |
| 3790 | SetMagickPixelPacket(image,q,nexus_indexes+i,&beta); |
| 3791 | MagickPixelCompositeMask(&beta,(MagickRealType) PixelIntensityToQuantum(r), |
| 3792 | &alpha,alpha.opacity,&beta); |
| 3793 | q->red=RoundToQuantum(beta.red); |
| 3794 | q->green=RoundToQuantum(beta.green); |
| 3795 | q->blue=RoundToQuantum(beta.blue); |
| 3796 | q->opacity=RoundToQuantum(beta.opacity); |
| 3797 | if (cache_info->active_index_channel != MagickFalse) |
| 3798 | nexus_indexes[i]=indexes[i]; |
| 3799 | p++; |
| 3800 | q++; |
| 3801 | r++; |
| 3802 | } |
| 3803 | clip_nexus=DestroyPixelCacheNexus(clip_nexus,1); |
| 3804 | image_nexus=DestroyPixelCacheNexus(image_nexus,1); |
| 3805 | if (i < (long) number_pixels) |
| 3806 | return(MagickFalse); |
| 3807 | return(MagickTrue); |
| 3808 | } |
| 3809 | |
| 3810 | /* |
| 3811 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3812 | % % |
| 3813 | % % |
| 3814 | % % |
| 3815 | + O p e n P i x e l C a c h e % |
| 3816 | % % |
| 3817 | % % |
| 3818 | % % |
| 3819 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3820 | % |
| 3821 | % OpenPixelCache() allocates the pixel cache. This includes defining the cache |
| 3822 | % dimensions, allocating space for the image pixels and optionally the |
| 3823 | % colormap indexes, and memory mapping the cache if it is disk based. The |
| 3824 | % cache nexus array is initialized as well. |
| 3825 | % |
| 3826 | % The format of the OpenPixelCache() method is: |
| 3827 | % |
| 3828 | % MagickBooleanType OpenPixelCache(Image *image,const MapMode mode, |
| 3829 | % ExceptionInfo *exception) |
| 3830 | % |
| 3831 | % A description of each parameter follows: |
| 3832 | % |
| 3833 | % o image: the image. |
| 3834 | % |
| 3835 | % o mode: ReadMode, WriteMode, or IOMode. |
| 3836 | % |
| 3837 | % o exception: return any errors or warnings in this structure. |
| 3838 | % |
| 3839 | */ |
| 3840 | |
| 3841 | static inline void AcquirePixelCachePixels(CacheInfo *cache_info) |
| 3842 | { |
| 3843 | cache_info->mapped=MagickFalse; |
| 3844 | cache_info->pixels=(PixelPacket *) AcquireMagickMemory((size_t) |
| 3845 | cache_info->length); |
| 3846 | if (cache_info->pixels == (PixelPacket *) NULL) |
| 3847 | { |
| 3848 | cache_info->mapped=MagickTrue; |
| 3849 | cache_info->pixels=(PixelPacket *) MapBlob(-1,IOMode,0,(size_t) |
| 3850 | cache_info->length); |
| 3851 | } |
| 3852 | } |
| 3853 | |
| 3854 | static MagickBooleanType ExtendCache(Image *image,MagickSizeType length) |
| 3855 | { |
| 3856 | CacheInfo |
| 3857 | *cache_info; |
| 3858 | |
| 3859 | MagickOffsetType |
| 3860 | count, |
| 3861 | extent, |
| 3862 | offset; |
| 3863 | |
| 3864 | cache_info=(CacheInfo *) image->cache; |
| 3865 | if (image->debug != MagickFalse) |
| 3866 | { |
| 3867 | char |
| 3868 | format[MaxTextExtent], |
| 3869 | message[MaxTextExtent]; |
| 3870 | |
| 3871 | (void) FormatMagickSize(length,format); |
| 3872 | (void) FormatMagickString(message,MaxTextExtent, |
| 3873 | "extend %s (%s[%d], disk, %s)",cache_info->filename, |
| 3874 | cache_info->cache_filename,cache_info->file,format); |
| 3875 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s",message); |
| 3876 | } |
| 3877 | if (length != (MagickSizeType) ((MagickOffsetType) length)) |
| 3878 | return(MagickFalse); |
| 3879 | extent=(MagickOffsetType) MagickSeek(cache_info->file,0,SEEK_END); |
| 3880 | if (extent < 0) |
| 3881 | return(MagickFalse); |
| 3882 | if ((MagickSizeType) extent >= length) |
| 3883 | return(MagickTrue); |
| 3884 | offset=(MagickOffsetType) length-1; |
| 3885 | count=WritePixelCacheRegion(cache_info,offset,1,(const unsigned char *) ""); |
| 3886 | return(count == (MagickOffsetType) 1 ? MagickTrue : MagickFalse); |
| 3887 | } |
| 3888 | |
| 3889 | static MagickBooleanType OpenPixelCache(Image *image,const MapMode mode, |
| 3890 | ExceptionInfo *exception) |
| 3891 | { |
| 3892 | char |
| 3893 | format[MaxTextExtent], |
| 3894 | message[MaxTextExtent]; |
| 3895 | |
| 3896 | CacheInfo |
| 3897 | *cache_info, |
| 3898 | source_info; |
| 3899 | |
| 3900 | MagickSizeType |
| 3901 | length, |
| 3902 | number_pixels; |
| 3903 | |
| 3904 | MagickStatusType |
| 3905 | status; |
| 3906 | |
| 3907 | size_t |
| 3908 | packet_size; |
| 3909 | |
| 3910 | unsigned long |
| 3911 | columns; |
| 3912 | |
| 3913 | if (image->debug != MagickFalse) |
| 3914 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3915 | if ((image->columns == 0) || (image->rows == 0)) |
| 3916 | ThrowBinaryException(CacheError,"NoPixelsDefinedInCache",image->filename); |
| 3917 | cache_info=(CacheInfo *) image->cache; |
| 3918 | source_info=(*cache_info); |
| 3919 | source_info.file=(-1); |
| 3920 | (void) FormatMagickString(cache_info->filename,MaxTextExtent,"%s[%ld]", |
| 3921 | image->filename,GetImageIndexInList(image)); |
cristy | 87528ea | 2009-09-10 14:53:56 +0000 | [diff] [blame] | 3922 | cache_info->mode=mode; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3923 | cache_info->rows=image->rows; |
| 3924 | cache_info->columns=image->columns; |
| 3925 | cache_info->active_index_channel=((image->storage_class == PseudoClass) || |
| 3926 | (image->colorspace == CMYKColorspace)) ? MagickTrue : MagickFalse; |
| 3927 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 3928 | packet_size=sizeof(PixelPacket); |
| 3929 | if (cache_info->active_index_channel != MagickFalse) |
| 3930 | packet_size+=sizeof(IndexPacket); |
| 3931 | length=number_pixels*packet_size; |
| 3932 | columns=(unsigned long) (length/cache_info->rows/packet_size); |
| 3933 | if (cache_info->columns != columns) |
| 3934 | ThrowBinaryException(ResourceLimitError,"PixelCacheAllocationFailed", |
| 3935 | image->filename); |
| 3936 | cache_info->length=length; |
| 3937 | status=AcquireMagickResource(AreaResource,cache_info->length); |
| 3938 | length=number_pixels*(sizeof(PixelPacket)+sizeof(IndexPacket)); |
| 3939 | if ((status != MagickFalse) && (length == (MagickSizeType) ((size_t) length))) |
| 3940 | { |
| 3941 | status=AcquireMagickResource(MemoryResource,cache_info->length); |
| 3942 | if (((cache_info->type == UndefinedCache) && (status != MagickFalse)) || |
| 3943 | (cache_info->type == MemoryCache)) |
| 3944 | { |
| 3945 | AcquirePixelCachePixels(cache_info); |
| 3946 | if (cache_info->pixels == (PixelPacket *) NULL) |
| 3947 | cache_info->pixels=source_info.pixels; |
| 3948 | else |
| 3949 | { |
| 3950 | /* |
| 3951 | Create memory pixel cache. |
| 3952 | */ |
| 3953 | if (image->debug != MagickFalse) |
| 3954 | { |
| 3955 | (void) FormatMagickSize(cache_info->length,format); |
| 3956 | (void) FormatMagickString(message,MaxTextExtent, |
| 3957 | "open %s (%s memory, %lux%lu %s)",cache_info->filename, |
| 3958 | cache_info->mapped != MagickFalse ? "anonymous" : "heap", |
| 3959 | cache_info->columns,cache_info->rows,format); |
| 3960 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s", |
| 3961 | message); |
| 3962 | } |
| 3963 | cache_info->storage_class=image->storage_class; |
| 3964 | cache_info->colorspace=image->colorspace; |
| 3965 | cache_info->type=MemoryCache; |
| 3966 | cache_info->indexes=(IndexPacket *) NULL; |
| 3967 | if (cache_info->active_index_channel != MagickFalse) |
| 3968 | cache_info->indexes=(IndexPacket *) (cache_info->pixels+ |
| 3969 | number_pixels); |
| 3970 | if (source_info.storage_class != UndefinedClass) |
| 3971 | { |
| 3972 | status|=ClonePixelCachePixels(cache_info,&source_info, |
| 3973 | exception); |
| 3974 | RelinquishPixelCachePixels(&source_info); |
| 3975 | } |
| 3976 | return(MagickTrue); |
| 3977 | } |
| 3978 | } |
| 3979 | RelinquishMagickResource(MemoryResource,cache_info->length); |
| 3980 | } |
| 3981 | /* |
| 3982 | Create pixel cache on disk. |
| 3983 | */ |
| 3984 | status=AcquireMagickResource(DiskResource,cache_info->length); |
| 3985 | if (status == MagickFalse) |
| 3986 | { |
| 3987 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 3988 | "CacheResourcesExhausted","`%s'",image->filename); |
| 3989 | return(MagickFalse); |
| 3990 | } |
| 3991 | if (OpenPixelCacheOnDisk(cache_info,mode) == MagickFalse) |
| 3992 | { |
| 3993 | RelinquishMagickResource(DiskResource,cache_info->length); |
| 3994 | ThrowFileException(exception,CacheError,"UnableToOpenPixelCache", |
| 3995 | image->filename); |
| 3996 | return(MagickFalse); |
| 3997 | } |
| 3998 | status=ExtendCache(image,(MagickSizeType) cache_info->offset+ |
| 3999 | cache_info->length); |
| 4000 | if (status == MagickFalse) |
| 4001 | { |
| 4002 | ThrowFileException(exception,CacheError,"UnableToExtendCache", |
| 4003 | image->filename); |
| 4004 | return(MagickFalse); |
| 4005 | } |
| 4006 | cache_info->storage_class=image->storage_class; |
| 4007 | cache_info->colorspace=image->colorspace; |
| 4008 | length=number_pixels*(sizeof(PixelPacket)+sizeof(IndexPacket)); |
| 4009 | status=AcquireMagickResource(AreaResource,cache_info->length); |
| 4010 | if ((status == MagickFalse) || (length != (MagickSizeType) ((size_t) length))) |
| 4011 | cache_info->type=DiskCache; |
| 4012 | else |
| 4013 | { |
| 4014 | status=AcquireMagickResource(MapResource,cache_info->length); |
| 4015 | if ((status == MagickFalse) && (cache_info->type != MapCache) && |
| 4016 | (cache_info->type != MemoryCache)) |
| 4017 | cache_info->type=DiskCache; |
| 4018 | else |
| 4019 | { |
| 4020 | cache_info->pixels=(PixelPacket *) MapBlob(cache_info->file,mode, |
| 4021 | cache_info->offset,(size_t) cache_info->length); |
| 4022 | if (cache_info->pixels == (PixelPacket *) NULL) |
| 4023 | { |
| 4024 | cache_info->pixels=source_info.pixels; |
| 4025 | cache_info->type=DiskCache; |
| 4026 | } |
| 4027 | else |
| 4028 | { |
| 4029 | /* |
| 4030 | Create file-backed memory-mapped pixel cache. |
| 4031 | */ |
| 4032 | (void) ClosePixelCacheOnDisk(cache_info); |
| 4033 | cache_info->type=MapCache; |
| 4034 | cache_info->mapped=MagickTrue; |
| 4035 | cache_info->indexes=(IndexPacket *) NULL; |
| 4036 | if (cache_info->active_index_channel != MagickFalse) |
| 4037 | cache_info->indexes=(IndexPacket *) (cache_info->pixels+ |
| 4038 | number_pixels); |
| 4039 | if ((source_info.type != UndefinedCache) && (mode != ReadMode)) |
| 4040 | { |
| 4041 | status=ClonePixelCachePixels(cache_info,&source_info, |
| 4042 | exception); |
| 4043 | RelinquishPixelCachePixels(&source_info); |
| 4044 | } |
| 4045 | if (image->debug != MagickFalse) |
| 4046 | { |
| 4047 | (void) FormatMagickSize(cache_info->length,format); |
| 4048 | (void) FormatMagickString(message,MaxTextExtent, |
| 4049 | "open %s (%s[%d], memory-mapped, %lux%lu %s)", |
| 4050 | cache_info->filename,cache_info->cache_filename, |
| 4051 | cache_info->file,cache_info->columns,cache_info->rows, |
| 4052 | format); |
| 4053 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s", |
| 4054 | message); |
| 4055 | } |
| 4056 | return(MagickTrue); |
| 4057 | } |
| 4058 | } |
| 4059 | RelinquishMagickResource(MapResource,cache_info->length); |
| 4060 | } |
| 4061 | if ((source_info.type != UndefinedCache) && (mode != ReadMode)) |
| 4062 | { |
| 4063 | status=ClonePixelCachePixels(cache_info,&source_info,exception); |
| 4064 | RelinquishPixelCachePixels(&source_info); |
| 4065 | } |
| 4066 | if (image->debug != MagickFalse) |
| 4067 | { |
| 4068 | (void) FormatMagickSize(cache_info->length,format); |
| 4069 | (void) FormatMagickString(message,MaxTextExtent, |
| 4070 | "open %s (%s[%d], disk, %lux%lu %s)",cache_info->filename, |
| 4071 | cache_info->cache_filename,cache_info->file,cache_info->columns, |
| 4072 | cache_info->rows,format); |
| 4073 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s",message); |
| 4074 | } |
| 4075 | return(MagickTrue); |
| 4076 | } |
| 4077 | |
| 4078 | /* |
| 4079 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4080 | % % |
| 4081 | % % |
| 4082 | % % |
| 4083 | + P e r s i s t P i x e l C a c h e % |
| 4084 | % % |
| 4085 | % % |
| 4086 | % % |
| 4087 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4088 | % |
| 4089 | % PersistPixelCache() attaches to or initializes a persistent pixel cache. A |
| 4090 | % persistent pixel cache is one that resides on disk and is not destroyed |
| 4091 | % when the program exits. |
| 4092 | % |
| 4093 | % The format of the PersistPixelCache() method is: |
| 4094 | % |
| 4095 | % MagickBooleanType PersistPixelCache(Image *image,const char *filename, |
| 4096 | % const MagickBooleanType attach,MagickOffsetType *offset, |
| 4097 | % ExceptionInfo *exception) |
| 4098 | % |
| 4099 | % A description of each parameter follows: |
| 4100 | % |
| 4101 | % o image: the image. |
| 4102 | % |
| 4103 | % o filename: the persistent pixel cache filename. |
| 4104 | % |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 4105 | % o attach: A value other than zero initializes the persistent pixel |
| 4106 | % cache. |
| 4107 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4108 | % o initialize: A value other than zero initializes the persistent pixel |
| 4109 | % cache. |
| 4110 | % |
| 4111 | % o offset: the offset in the persistent cache to store pixels. |
| 4112 | % |
| 4113 | % o exception: return any errors or warnings in this structure. |
| 4114 | % |
| 4115 | */ |
| 4116 | MagickExport MagickBooleanType PersistPixelCache(Image *image, |
| 4117 | const char *filename,const MagickBooleanType attach,MagickOffsetType *offset, |
| 4118 | ExceptionInfo *exception) |
| 4119 | { |
| 4120 | CacheInfo |
| 4121 | *cache_info, |
| 4122 | *clone_info; |
| 4123 | |
| 4124 | Image |
| 4125 | clone_image; |
| 4126 | |
| 4127 | long |
| 4128 | pagesize; |
| 4129 | |
| 4130 | MagickBooleanType |
| 4131 | status; |
| 4132 | |
| 4133 | assert(image != (Image *) NULL); |
| 4134 | assert(image->signature == MagickSignature); |
| 4135 | if (image->debug != MagickFalse) |
| 4136 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4137 | assert(image->cache != (void *) NULL); |
| 4138 | assert(filename != (const char *) NULL); |
| 4139 | assert(offset != (MagickOffsetType *) NULL); |
| 4140 | pagesize=(-1); |
| 4141 | #if defined(MAGICKCORE_HAVE_SYSCONF) && defined(_SC_PAGESIZE) |
| 4142 | pagesize=sysconf(_SC_PAGESIZE); |
| 4143 | #elif defined(MAGICKCORE_HAVE_GETPAGESIZE) && defined(MAGICKCORE_POSIX_SUPPORT) |
| 4144 | pagesize=getpagesize(); |
| 4145 | #endif |
| 4146 | if (pagesize <= 0) |
| 4147 | pagesize=4096; |
| 4148 | cache_info=(CacheInfo *) image->cache; |
| 4149 | assert(cache_info->signature == MagickSignature); |
| 4150 | if (attach != MagickFalse) |
| 4151 | { |
| 4152 | /* |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 4153 | Attach existing persistent pixel cache. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4154 | */ |
| 4155 | if (image->debug != MagickFalse) |
| 4156 | (void) LogMagickEvent(CacheEvent,GetMagickModule(), |
| 4157 | "attach persistent cache"); |
| 4158 | (void) CopyMagickString(cache_info->cache_filename,filename, |
| 4159 | MaxTextExtent); |
| 4160 | cache_info->type=DiskCache; |
| 4161 | cache_info->offset=(*offset); |
| 4162 | if (OpenPixelCache(image,ReadMode,exception) == MagickFalse) |
| 4163 | return(MagickFalse); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4164 | *offset+=cache_info->length+pagesize-(cache_info->length % pagesize); |
| 4165 | return(MagickTrue); |
| 4166 | } |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 4167 | if ((cache_info->mode != ReadMode) && (cache_info->type != MemoryCache) && |
| 4168 | (cache_info->reference_count == 1)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4169 | { |
| 4170 | (void) LockSemaphoreInfo(cache_info->semaphore); |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 4171 | if ((cache_info->mode != ReadMode) && (cache_info->type != MemoryCache) && |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4172 | (cache_info->reference_count == 1)) |
| 4173 | { |
| 4174 | int |
| 4175 | status; |
| 4176 | |
| 4177 | /* |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 4178 | Usurp existing persistent pixel cache. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4179 | */ |
| 4180 | status=rename(cache_info->cache_filename,filename); |
| 4181 | if (status == 0) |
| 4182 | { |
| 4183 | (void) CopyMagickString(cache_info->cache_filename,filename, |
| 4184 | MaxTextExtent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4185 | *offset+=cache_info->length+pagesize-(cache_info->length % |
| 4186 | pagesize); |
cristy | 87528ea | 2009-09-10 14:53:56 +0000 | [diff] [blame] | 4187 | (void) UnlockSemaphoreInfo(cache_info->semaphore); |
| 4188 | cache_info=(CacheInfo *) ReferencePixelCache(cache_info); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4189 | if (image->debug != MagickFalse) |
| 4190 | (void) LogMagickEvent(CacheEvent,GetMagickModule(), |
| 4191 | "Usurp resident persistent cache"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4192 | return(MagickTrue); |
| 4193 | } |
| 4194 | } |
| 4195 | (void) UnlockSemaphoreInfo(cache_info->semaphore); |
| 4196 | } |
| 4197 | /* |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame^] | 4198 | Clone persistent pixel cache. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4199 | */ |
| 4200 | clone_image=(*image); |
| 4201 | clone_info=(CacheInfo *) clone_image.cache; |
| 4202 | image->cache=ClonePixelCache(cache_info); |
| 4203 | cache_info=(CacheInfo *) ReferencePixelCache(image->cache); |
| 4204 | (void) CopyMagickString(cache_info->cache_filename,filename,MaxTextExtent); |
| 4205 | cache_info->type=DiskCache; |
| 4206 | cache_info->offset=(*offset); |
| 4207 | cache_info=(CacheInfo *) image->cache; |
| 4208 | status=ClonePixelCacheNexus(cache_info,clone_info,exception); |
| 4209 | if (status != MagickFalse) |
| 4210 | { |
| 4211 | status=OpenPixelCache(image,IOMode,exception); |
| 4212 | if (status != MagickFalse) |
| 4213 | status=ClonePixelCachePixels(cache_info,clone_info,&image->exception); |
| 4214 | } |
| 4215 | *offset+=cache_info->length+pagesize-(cache_info->length % pagesize); |
| 4216 | clone_info=(CacheInfo *) DestroyPixelCache(clone_info); |
| 4217 | return(status); |
| 4218 | } |
| 4219 | |
| 4220 | /* |
| 4221 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4222 | % % |
| 4223 | % % |
| 4224 | % % |
| 4225 | + Q u e u e A u t h e n t i c N e x u s % |
| 4226 | % % |
| 4227 | % % |
| 4228 | % % |
| 4229 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4230 | % |
| 4231 | % QueueAuthenticNexus() allocates an region to store image pixels as defined |
| 4232 | % by the region rectangle and returns a pointer to the region. This region is |
| 4233 | % subsequently transferred from the pixel cache with |
| 4234 | % SyncAuthenticPixelsCache(). A pointer to the pixels is returned if the |
| 4235 | % pixels are transferred, otherwise a NULL is returned. |
| 4236 | % |
| 4237 | % The format of the QueueAuthenticNexus() method is: |
| 4238 | % |
| 4239 | % PixelPacket *QueueAuthenticNexus(Image *image,const long x,const long y, |
| 4240 | % const unsigned long columns,const unsigned long rows, |
| 4241 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4242 | % |
| 4243 | % A description of each parameter follows: |
| 4244 | % |
| 4245 | % o image: the image. |
| 4246 | % |
| 4247 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 4248 | % pixels. |
| 4249 | % |
| 4250 | % o nexus_info: the cache nexus to set. |
| 4251 | % |
| 4252 | % o exception: return any errors or warnings in this structure. |
| 4253 | % |
| 4254 | */ |
| 4255 | MagickExport PixelPacket *QueueAuthenticNexus(Image *image,const long x, |
| 4256 | const long y,const unsigned long columns,const unsigned long rows, |
| 4257 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4258 | { |
| 4259 | CacheInfo |
| 4260 | *cache_info; |
| 4261 | |
| 4262 | MagickOffsetType |
| 4263 | offset; |
| 4264 | |
| 4265 | MagickSizeType |
| 4266 | number_pixels; |
| 4267 | |
| 4268 | RectangleInfo |
| 4269 | region; |
| 4270 | |
| 4271 | /* |
| 4272 | Validate pixel cache geometry. |
| 4273 | */ |
| 4274 | cache_info=(CacheInfo *) image->cache; |
| 4275 | if ((cache_info->columns == 0) && (cache_info->rows == 0)) |
| 4276 | { |
| 4277 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 4278 | "NoPixelsDefinedInCache","`%s'",image->filename); |
| 4279 | return((PixelPacket *) NULL); |
| 4280 | } |
| 4281 | if ((x < 0) || (y < 0) || (x >= (long) cache_info->columns) || |
| 4282 | (y >= (long) cache_info->rows)) |
| 4283 | { |
| 4284 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 4285 | "PixelsAreNotAuthentic","`%s'",image->filename); |
| 4286 | return((PixelPacket *) NULL); |
| 4287 | } |
| 4288 | offset=(MagickOffsetType) y*cache_info->columns+x; |
| 4289 | if (offset < 0) |
| 4290 | return((PixelPacket *) NULL); |
| 4291 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 4292 | offset+=(MagickOffsetType) (rows-1)*cache_info->columns+columns-1; |
| 4293 | if ((MagickSizeType) offset >= number_pixels) |
| 4294 | return((PixelPacket *) NULL); |
| 4295 | /* |
| 4296 | Return pixel cache. |
| 4297 | */ |
| 4298 | region.x=x; |
| 4299 | region.y=y; |
| 4300 | region.width=columns; |
| 4301 | region.height=rows; |
| 4302 | return(SetPixelCacheNexusPixels(image,®ion,nexus_info,exception)); |
| 4303 | } |
| 4304 | |
| 4305 | /* |
| 4306 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4307 | % % |
| 4308 | % % |
| 4309 | % % |
| 4310 | + Q u e u e A u t h e n t i c P i x e l s C a c h e % |
| 4311 | % % |
| 4312 | % % |
| 4313 | % % |
| 4314 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4315 | % |
| 4316 | % QueueAuthenticPixelsCache() allocates an region to store image pixels as |
| 4317 | % defined by the region rectangle and returns a pointer to the region. This |
| 4318 | % region is subsequently transferred from the pixel cache with |
| 4319 | % SyncAuthenticPixelsCache(). A pointer to the pixels is returned if the |
| 4320 | % pixels are transferred, otherwise a NULL is returned. |
| 4321 | % |
| 4322 | % The format of the QueueAuthenticPixelsCache() method is: |
| 4323 | % |
| 4324 | % PixelPacket *QueueAuthenticPixelsCache(Image *image,const long x, |
| 4325 | % const long y,const unsigned long columns,const unsigned long rows, |
| 4326 | % ExceptionInfo *exception) |
| 4327 | % |
| 4328 | % A description of each parameter follows: |
| 4329 | % |
| 4330 | % o image: the image. |
| 4331 | % |
| 4332 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 4333 | % pixels. |
| 4334 | % |
| 4335 | % o exception: return any errors or warnings in this structure. |
| 4336 | % |
| 4337 | */ |
| 4338 | static PixelPacket *QueueAuthenticPixelsCache(Image *image,const long x, |
| 4339 | const long y,const unsigned long columns,const unsigned long rows, |
| 4340 | ExceptionInfo *exception) |
| 4341 | { |
| 4342 | CacheInfo |
| 4343 | *cache_info; |
| 4344 | |
| 4345 | long |
| 4346 | id; |
| 4347 | |
| 4348 | PixelPacket |
| 4349 | *pixels; |
| 4350 | |
| 4351 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickFalse,exception); |
| 4352 | if (cache_info == (Cache) NULL) |
| 4353 | return((PixelPacket *) NULL); |
| 4354 | id=GetOpenMPThreadId(); |
| 4355 | assert(id < (long) cache_info->number_threads); |
| 4356 | pixels=QueueAuthenticNexus(image,x,y,columns,rows,cache_info->nexus_info[id], |
| 4357 | exception); |
| 4358 | return(pixels); |
| 4359 | } |
| 4360 | |
| 4361 | /* |
| 4362 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4363 | % % |
| 4364 | % % |
| 4365 | % % |
| 4366 | % Q u e u e A u t h e n t i c P i x e l s % |
| 4367 | % % |
| 4368 | % % |
| 4369 | % % |
| 4370 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4371 | % |
| 4372 | % QueueAuthenticPixels() queues a mutable pixel region. If the region is |
| 4373 | % successfully intialized a pointer to a PixelPacket array representing the |
| 4374 | % region is returned, otherwise NULL is returned. The returned pointer may |
| 4375 | % point to a temporary working buffer for the pixels or it may point to the |
| 4376 | % final location of the pixels in memory. |
| 4377 | % |
| 4378 | % Write-only access means that any existing pixel values corresponding to |
| 4379 | % the region are ignored. This is useful if the initial image is being |
| 4380 | % created from scratch, or if the existing pixel values are to be |
| 4381 | % completely replaced without need to refer to their pre-existing values. |
| 4382 | % The application is free to read and write the pixel buffer returned by |
| 4383 | % QueueAuthenticPixels() any way it pleases. QueueAuthenticPixels() does not |
| 4384 | % initialize the pixel array values. Initializing pixel array values is the |
| 4385 | % application's responsibility. |
| 4386 | % |
| 4387 | % Performance is maximized if the selected region is part of one row, or |
| 4388 | % one or more full rows, since then there is opportunity to access the |
| 4389 | % pixels in-place (without a copy) if the image is in RAM, or in a |
| 4390 | % memory-mapped file. The returned pointer should *never* be deallocated |
| 4391 | % by the user. |
| 4392 | % |
| 4393 | % Pixels accessed via the returned pointer represent a simple array of type |
| 4394 | % PixelPacket. If the image type is CMYK or the storage class is PseudoClass, |
| 4395 | % call GetAuthenticIndexQueue() after invoking GetAuthenticPixels() to obtain |
| 4396 | % the black color component or the colormap indexes (of type IndexPacket) |
| 4397 | % corresponding to the region. Once the PixelPacket (and/or IndexPacket) |
| 4398 | % array has been updated, the changes must be saved back to the underlying |
| 4399 | % image using SyncAuthenticPixels() or they may be lost. |
| 4400 | % |
| 4401 | % The format of the QueueAuthenticPixels() method is: |
| 4402 | % |
| 4403 | % PixelPacket *QueueAuthenticPixels(Image *image,const long x,const long y, |
| 4404 | % const unsigned long columns,const unsigned long rows, |
| 4405 | % ExceptionInfo *exception) |
| 4406 | % |
| 4407 | % A description of each parameter follows: |
| 4408 | % |
| 4409 | % o image: the image. |
| 4410 | % |
| 4411 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 4412 | % pixels. |
| 4413 | % |
| 4414 | % o exception: return any errors or warnings in this structure. |
| 4415 | % |
| 4416 | */ |
| 4417 | MagickExport PixelPacket *QueueAuthenticPixels(Image *image,const long x, |
| 4418 | const long y,const unsigned long columns,const unsigned long rows, |
| 4419 | ExceptionInfo *exception) |
| 4420 | { |
| 4421 | CacheInfo |
| 4422 | *cache_info; |
| 4423 | |
| 4424 | PixelPacket |
| 4425 | *pixels; |
| 4426 | |
| 4427 | assert(image != (Image *) NULL); |
| 4428 | assert(image->signature == MagickSignature); |
| 4429 | if (image->debug != MagickFalse) |
| 4430 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4431 | assert(image->cache != (Cache) NULL); |
| 4432 | cache_info=(CacheInfo *) image->cache; |
| 4433 | assert(cache_info->signature == MagickSignature); |
| 4434 | if (cache_info->methods.queue_authentic_pixels_handler == |
| 4435 | (QueueAuthenticPixelsHandler) NULL) |
| 4436 | return((PixelPacket *) NULL); |
| 4437 | pixels=cache_info->methods.queue_authentic_pixels_handler(image,x,y,columns, |
| 4438 | rows,exception); |
| 4439 | return(pixels); |
| 4440 | } |
| 4441 | |
| 4442 | /* |
| 4443 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4444 | % % |
| 4445 | % % |
| 4446 | % % |
| 4447 | + R e a d P i x e l C a c h e I n d e x e s % |
| 4448 | % % |
| 4449 | % % |
| 4450 | % % |
| 4451 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4452 | % |
| 4453 | % ReadPixelCacheIndexes() reads colormap indexes from the specified region of |
| 4454 | % the pixel cache. |
| 4455 | % |
| 4456 | % The format of the ReadPixelCacheIndexes() method is: |
| 4457 | % |
| 4458 | % MagickBooleanType ReadPixelCacheIndexes(CacheInfo *cache_info, |
| 4459 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4460 | % |
| 4461 | % A description of each parameter follows: |
| 4462 | % |
| 4463 | % o cache_info: the pixel cache. |
| 4464 | % |
| 4465 | % o nexus_info: the cache nexus to read the colormap indexes. |
| 4466 | % |
| 4467 | % o exception: return any errors or warnings in this structure. |
| 4468 | % |
| 4469 | */ |
| 4470 | static MagickBooleanType ReadPixelCacheIndexes(CacheInfo *cache_info, |
| 4471 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4472 | { |
| 4473 | MagickOffsetType |
| 4474 | count, |
| 4475 | offset; |
| 4476 | |
| 4477 | MagickSizeType |
| 4478 | length, |
| 4479 | number_pixels; |
| 4480 | |
| 4481 | register IndexPacket |
| 4482 | *__restrict q; |
| 4483 | |
| 4484 | register long |
| 4485 | y; |
| 4486 | |
| 4487 | unsigned long |
| 4488 | rows; |
| 4489 | |
| 4490 | if (cache_info->debug != MagickFalse) |
| 4491 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4492 | cache_info->filename); |
| 4493 | if (cache_info->active_index_channel == MagickFalse) |
| 4494 | return(MagickFalse); |
| 4495 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 4496 | return(MagickTrue); |
| 4497 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 4498 | nexus_info->region.x; |
| 4499 | length=(MagickSizeType) nexus_info->region.width*sizeof(IndexPacket); |
| 4500 | rows=nexus_info->region.height; |
| 4501 | number_pixels=length*rows; |
| 4502 | if ((cache_info->columns == nexus_info->region.width) && |
| 4503 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 4504 | { |
| 4505 | length=number_pixels; |
| 4506 | rows=1UL; |
| 4507 | } |
| 4508 | q=nexus_info->indexes; |
| 4509 | switch (cache_info->type) |
| 4510 | { |
| 4511 | case MemoryCache: |
| 4512 | case MapCache: |
| 4513 | { |
| 4514 | register IndexPacket |
| 4515 | *__restrict p; |
| 4516 | |
| 4517 | /* |
| 4518 | Read indexes from memory. |
| 4519 | */ |
| 4520 | p=cache_info->indexes+offset; |
| 4521 | for (y=0; y < (long) rows; y++) |
| 4522 | { |
| 4523 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 4524 | p+=cache_info->columns; |
| 4525 | q+=nexus_info->region.width; |
| 4526 | } |
| 4527 | break; |
| 4528 | } |
| 4529 | case DiskCache: |
| 4530 | { |
| 4531 | /* |
| 4532 | Read indexes from disk. |
| 4533 | */ |
| 4534 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 4535 | { |
| 4536 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 4537 | cache_info->cache_filename); |
| 4538 | return(MagickFalse); |
| 4539 | } |
| 4540 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 4541 | for (y=0; y < (long) rows; y++) |
| 4542 | { |
| 4543 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+number_pixels* |
| 4544 | sizeof(PixelPacket)+offset*sizeof(*q),length,(unsigned char *) q); |
| 4545 | if ((MagickSizeType) count < length) |
| 4546 | break; |
| 4547 | offset+=cache_info->columns; |
| 4548 | q+=nexus_info->region.width; |
| 4549 | } |
| 4550 | if (y < (long) rows) |
| 4551 | { |
| 4552 | ThrowFileException(exception,CacheError,"UnableToReadPixelCache", |
| 4553 | cache_info->cache_filename); |
| 4554 | return(MagickFalse); |
| 4555 | } |
| 4556 | break; |
| 4557 | } |
| 4558 | default: |
| 4559 | break; |
| 4560 | } |
| 4561 | if ((cache_info->debug != MagickFalse) && |
| 4562 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 4563 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 4564 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 4565 | nexus_info->region.x,nexus_info->region.y); |
| 4566 | return(MagickTrue); |
| 4567 | } |
| 4568 | |
| 4569 | /* |
| 4570 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4571 | % % |
| 4572 | % % |
| 4573 | % % |
| 4574 | + R e a d P i x e l C a c h e P i x e l s % |
| 4575 | % % |
| 4576 | % % |
| 4577 | % % |
| 4578 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4579 | % |
| 4580 | % ReadPixelCachePixels() reads pixels from the specified region of the pixel |
| 4581 | % cache. |
| 4582 | % |
| 4583 | % The format of the ReadPixelCachePixels() method is: |
| 4584 | % |
| 4585 | % MagickBooleanType ReadPixelCachePixels(CacheInfo *cache_info, |
| 4586 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4587 | % |
| 4588 | % A description of each parameter follows: |
| 4589 | % |
| 4590 | % o cache_info: the pixel cache. |
| 4591 | % |
| 4592 | % o nexus_info: the cache nexus to read the pixels. |
| 4593 | % |
| 4594 | % o exception: return any errors or warnings in this structure. |
| 4595 | % |
| 4596 | */ |
| 4597 | static MagickBooleanType ReadPixelCachePixels(CacheInfo *cache_info, |
| 4598 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4599 | { |
| 4600 | MagickOffsetType |
| 4601 | count, |
| 4602 | offset; |
| 4603 | |
| 4604 | MagickSizeType |
| 4605 | length, |
| 4606 | number_pixels; |
| 4607 | |
| 4608 | register long |
| 4609 | y; |
| 4610 | |
| 4611 | register PixelPacket |
| 4612 | *__restrict q; |
| 4613 | |
| 4614 | unsigned long |
| 4615 | rows; |
| 4616 | |
| 4617 | if (cache_info->debug != MagickFalse) |
| 4618 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4619 | cache_info->filename); |
| 4620 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 4621 | return(MagickTrue); |
| 4622 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 4623 | nexus_info->region.x; |
| 4624 | length=(MagickSizeType) nexus_info->region.width*sizeof(PixelPacket); |
| 4625 | rows=nexus_info->region.height; |
| 4626 | number_pixels=length*rows; |
| 4627 | if ((cache_info->columns == nexus_info->region.width) && |
| 4628 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 4629 | { |
| 4630 | length=number_pixels; |
| 4631 | rows=1UL; |
| 4632 | } |
| 4633 | q=nexus_info->pixels; |
| 4634 | switch (cache_info->type) |
| 4635 | { |
| 4636 | case MemoryCache: |
| 4637 | case MapCache: |
| 4638 | { |
| 4639 | register PixelPacket |
| 4640 | *__restrict p; |
| 4641 | |
| 4642 | /* |
| 4643 | Read pixels from memory. |
| 4644 | */ |
| 4645 | p=cache_info->pixels+offset; |
| 4646 | for (y=0; y < (long) rows; y++) |
| 4647 | { |
| 4648 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 4649 | p+=cache_info->columns; |
| 4650 | q+=nexus_info->region.width; |
| 4651 | } |
| 4652 | break; |
| 4653 | } |
| 4654 | case DiskCache: |
| 4655 | { |
| 4656 | /* |
| 4657 | Read pixels from disk. |
| 4658 | */ |
| 4659 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 4660 | { |
| 4661 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 4662 | cache_info->cache_filename); |
| 4663 | return(MagickFalse); |
| 4664 | } |
| 4665 | for (y=0; y < (long) rows; y++) |
| 4666 | { |
| 4667 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+offset* |
| 4668 | sizeof(*q),length,(unsigned char *) q); |
| 4669 | if ((MagickSizeType) count < length) |
| 4670 | break; |
| 4671 | offset+=cache_info->columns; |
| 4672 | q+=nexus_info->region.width; |
| 4673 | } |
| 4674 | if (y < (long) rows) |
| 4675 | { |
| 4676 | ThrowFileException(exception,CacheError,"UnableToReadPixelCache", |
| 4677 | cache_info->cache_filename); |
| 4678 | return(MagickFalse); |
| 4679 | } |
| 4680 | break; |
| 4681 | } |
| 4682 | default: |
| 4683 | break; |
| 4684 | } |
| 4685 | if ((cache_info->debug != MagickFalse) && |
| 4686 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 4687 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 4688 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 4689 | nexus_info->region.x,nexus_info->region.y); |
| 4690 | return(MagickTrue); |
| 4691 | } |
| 4692 | |
| 4693 | /* |
| 4694 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4695 | % % |
| 4696 | % % |
| 4697 | % % |
| 4698 | + R e f e r e n c e P i x e l C a c h e % |
| 4699 | % % |
| 4700 | % % |
| 4701 | % % |
| 4702 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4703 | % |
| 4704 | % ReferencePixelCache() increments the reference count associated with the |
| 4705 | % pixel cache returning a pointer to the cache. |
| 4706 | % |
| 4707 | % The format of the ReferencePixelCache method is: |
| 4708 | % |
| 4709 | % Cache ReferencePixelCache(Cache cache_info) |
| 4710 | % |
| 4711 | % A description of each parameter follows: |
| 4712 | % |
| 4713 | % o cache_info: the pixel cache. |
| 4714 | % |
| 4715 | */ |
| 4716 | MagickExport Cache ReferencePixelCache(Cache cache) |
| 4717 | { |
| 4718 | CacheInfo |
| 4719 | *cache_info; |
| 4720 | |
| 4721 | assert(cache != (Cache *) NULL); |
| 4722 | cache_info=(CacheInfo *) cache; |
| 4723 | assert(cache_info->signature == MagickSignature); |
| 4724 | if (cache_info->debug != MagickFalse) |
| 4725 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4726 | cache_info->filename); |
| 4727 | (void) LockSemaphoreInfo(cache_info->semaphore); |
| 4728 | cache_info->reference_count++; |
| 4729 | (void) UnlockSemaphoreInfo(cache_info->semaphore); |
| 4730 | return(cache_info); |
| 4731 | } |
| 4732 | |
| 4733 | /* |
| 4734 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4735 | % % |
| 4736 | % % |
| 4737 | % % |
| 4738 | + S e t P i x e l C a c h e M e t h o d s % |
| 4739 | % % |
| 4740 | % % |
| 4741 | % % |
| 4742 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4743 | % |
| 4744 | % SetPixelCacheMethods() sets the image pixel methods to the specified ones. |
| 4745 | % |
| 4746 | % The format of the SetPixelCacheMethods() method is: |
| 4747 | % |
| 4748 | % SetPixelCacheMethods(Cache *,CacheMethods *cache_methods) |
| 4749 | % |
| 4750 | % A description of each parameter follows: |
| 4751 | % |
| 4752 | % o cache: the pixel cache. |
| 4753 | % |
| 4754 | % o cache_methods: Specifies a pointer to a CacheMethods structure. |
| 4755 | % |
| 4756 | */ |
| 4757 | MagickExport void SetPixelCacheMethods(Cache cache,CacheMethods *cache_methods) |
| 4758 | { |
| 4759 | CacheInfo |
| 4760 | *cache_info; |
| 4761 | |
| 4762 | GetOneAuthenticPixelFromHandler |
| 4763 | get_one_authentic_pixel_from_handler; |
| 4764 | |
| 4765 | GetOneVirtualPixelFromHandler |
| 4766 | get_one_virtual_pixel_from_handler; |
| 4767 | |
| 4768 | /* |
| 4769 | Set cache pixel methods. |
| 4770 | */ |
| 4771 | assert(cache != (Cache) NULL); |
| 4772 | assert(cache_methods != (CacheMethods *) NULL); |
| 4773 | cache_info=(CacheInfo *) cache; |
| 4774 | assert(cache_info->signature == MagickSignature); |
| 4775 | if (cache_info->debug != MagickFalse) |
| 4776 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4777 | cache_info->filename); |
| 4778 | if (cache_methods->get_virtual_pixel_handler != (GetVirtualPixelHandler) NULL) |
| 4779 | cache_info->methods.get_virtual_pixel_handler= |
| 4780 | cache_methods->get_virtual_pixel_handler; |
| 4781 | if (cache_methods->destroy_pixel_handler != (DestroyPixelHandler) NULL) |
| 4782 | cache_info->methods.destroy_pixel_handler= |
| 4783 | cache_methods->destroy_pixel_handler; |
| 4784 | if (cache_methods->get_virtual_indexes_from_handler != |
| 4785 | (GetVirtualIndexesFromHandler) NULL) |
| 4786 | cache_info->methods.get_virtual_indexes_from_handler= |
| 4787 | cache_methods->get_virtual_indexes_from_handler; |
| 4788 | if (cache_methods->get_authentic_pixels_handler != |
| 4789 | (GetAuthenticPixelsHandler) NULL) |
| 4790 | cache_info->methods.get_authentic_pixels_handler= |
| 4791 | cache_methods->get_authentic_pixels_handler; |
| 4792 | if (cache_methods->queue_authentic_pixels_handler != |
| 4793 | (QueueAuthenticPixelsHandler) NULL) |
| 4794 | cache_info->methods.queue_authentic_pixels_handler= |
| 4795 | cache_methods->queue_authentic_pixels_handler; |
| 4796 | if (cache_methods->sync_authentic_pixels_handler != |
| 4797 | (SyncAuthenticPixelsHandler) NULL) |
| 4798 | cache_info->methods.sync_authentic_pixels_handler= |
| 4799 | cache_methods->sync_authentic_pixels_handler; |
| 4800 | if (cache_methods->get_authentic_pixels_from_handler != |
| 4801 | (GetAuthenticPixelsFromHandler) NULL) |
| 4802 | cache_info->methods.get_authentic_pixels_from_handler= |
| 4803 | cache_methods->get_authentic_pixels_from_handler; |
| 4804 | if (cache_methods->get_authentic_indexes_from_handler != |
| 4805 | (GetAuthenticIndexesFromHandler) NULL) |
| 4806 | cache_info->methods.get_authentic_indexes_from_handler= |
| 4807 | cache_methods->get_authentic_indexes_from_handler; |
| 4808 | get_one_virtual_pixel_from_handler= |
| 4809 | cache_info->methods.get_one_virtual_pixel_from_handler; |
| 4810 | if (get_one_virtual_pixel_from_handler != |
| 4811 | (GetOneVirtualPixelFromHandler) NULL) |
| 4812 | cache_info->methods.get_one_virtual_pixel_from_handler= |
| 4813 | cache_methods->get_one_virtual_pixel_from_handler; |
| 4814 | get_one_authentic_pixel_from_handler= |
| 4815 | cache_methods->get_one_authentic_pixel_from_handler; |
| 4816 | if (get_one_authentic_pixel_from_handler != |
| 4817 | (GetOneAuthenticPixelFromHandler) NULL) |
| 4818 | cache_info->methods.get_one_authentic_pixel_from_handler= |
| 4819 | cache_methods->get_one_authentic_pixel_from_handler; |
| 4820 | } |
| 4821 | |
| 4822 | /* |
| 4823 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4824 | % % |
| 4825 | % % |
| 4826 | % % |
| 4827 | + S e t P i x e l C a c h e N e x u s P i x e l s % |
| 4828 | % % |
| 4829 | % % |
| 4830 | % % |
| 4831 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4832 | % |
| 4833 | % SetPixelCacheNexusPixels() defines the region of the cache for the |
| 4834 | % specified cache nexus. |
| 4835 | % |
| 4836 | % The format of the SetPixelCacheNexusPixels() method is: |
| 4837 | % |
| 4838 | % PixelPacket SetPixelCacheNexusPixels(const Image *image, |
| 4839 | % const RectangleInfo *region,NexusInfo *nexus_info, |
| 4840 | % ExceptionInfo *exception) |
| 4841 | % |
| 4842 | % A description of each parameter follows: |
| 4843 | % |
| 4844 | % o image: the image. |
| 4845 | % |
| 4846 | % o region: A pointer to the RectangleInfo structure that defines the |
| 4847 | % region of this particular cache nexus. |
| 4848 | % |
| 4849 | % o nexus_info: the cache nexus to set. |
| 4850 | % |
| 4851 | % o exception: return any errors or warnings in this structure. |
| 4852 | % |
| 4853 | */ |
| 4854 | static PixelPacket *SetPixelCacheNexusPixels(const Image *image, |
| 4855 | const RectangleInfo *region,NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4856 | { |
| 4857 | CacheInfo |
| 4858 | *cache_info; |
| 4859 | |
| 4860 | MagickBooleanType |
| 4861 | status; |
| 4862 | |
| 4863 | MagickOffsetType |
| 4864 | offset; |
| 4865 | |
| 4866 | MagickSizeType |
| 4867 | length, |
| 4868 | number_pixels; |
| 4869 | |
| 4870 | if (image->debug != MagickFalse) |
| 4871 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4872 | cache_info=(CacheInfo *) image->cache; |
| 4873 | assert(cache_info->signature == MagickSignature); |
| 4874 | if (cache_info->type == UndefinedCache) |
| 4875 | return((PixelPacket *) NULL); |
| 4876 | nexus_info->region.width=region->width == 0UL ? 1UL : region->width; |
| 4877 | nexus_info->region.height=region->height == 0UL ? 1UL : region->height; |
| 4878 | nexus_info->region.x=region->x; |
| 4879 | nexus_info->region.y=region->y; |
| 4880 | if ((cache_info->type != DiskCache) && (image->clip_mask == (Image *) NULL) && |
| 4881 | (image->mask == (Image *) NULL)) |
| 4882 | { |
| 4883 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 4884 | nexus_info->region.x; |
| 4885 | length=(MagickSizeType) (nexus_info->region.height-1)*cache_info->columns+ |
| 4886 | nexus_info->region.width-1; |
| 4887 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 4888 | if ((offset >= 0) && (((MagickSizeType) offset+length) < number_pixels)) |
| 4889 | { |
| 4890 | long |
| 4891 | x, |
| 4892 | y; |
| 4893 | |
| 4894 | x=nexus_info->region.x+nexus_info->region.width; |
| 4895 | y=nexus_info->region.y+nexus_info->region.height; |
| 4896 | if ((nexus_info->region.x >= 0) && |
| 4897 | (x <= (long) cache_info->columns) && |
| 4898 | (nexus_info->region.y >= 0) && (y <= (long) cache_info->rows)) |
| 4899 | if ((nexus_info->region.height == 1UL) || |
| 4900 | ((nexus_info->region.x == 0) && |
| 4901 | ((nexus_info->region.width % cache_info->columns) == 0))) |
| 4902 | { |
| 4903 | /* |
| 4904 | Pixels are accessed directly from memory. |
| 4905 | */ |
| 4906 | nexus_info->pixels=cache_info->pixels+offset; |
| 4907 | nexus_info->indexes=(IndexPacket *) NULL; |
| 4908 | if (cache_info->active_index_channel != MagickFalse) |
| 4909 | nexus_info->indexes=cache_info->indexes+offset; |
| 4910 | return(nexus_info->pixels); |
| 4911 | } |
| 4912 | } |
| 4913 | } |
| 4914 | /* |
| 4915 | Pixels are stored in a cache region until they are synced to the cache. |
| 4916 | */ |
| 4917 | number_pixels=(MagickSizeType) nexus_info->region.width* |
| 4918 | nexus_info->region.height; |
| 4919 | length=number_pixels*sizeof(PixelPacket); |
| 4920 | if (cache_info->active_index_channel != MagickFalse) |
| 4921 | length+=number_pixels*sizeof(IndexPacket); |
| 4922 | if (nexus_info->cache == (PixelPacket *) NULL) |
| 4923 | { |
| 4924 | nexus_info->length=length; |
| 4925 | status=AcquireCacheNexusPixels(cache_info,nexus_info,exception); |
| 4926 | if (status == MagickFalse) |
| 4927 | return((PixelPacket *) NULL); |
| 4928 | } |
| 4929 | else |
| 4930 | if (nexus_info->length != length) |
| 4931 | { |
| 4932 | RelinquishCacheNexusPixels(nexus_info); |
| 4933 | nexus_info->length=length; |
| 4934 | status=AcquireCacheNexusPixels(cache_info,nexus_info,exception); |
| 4935 | if (status == MagickFalse) |
| 4936 | return((PixelPacket *) NULL); |
| 4937 | } |
| 4938 | nexus_info->pixels=nexus_info->cache; |
| 4939 | nexus_info->indexes=(IndexPacket *) NULL; |
| 4940 | if (cache_info->active_index_channel != MagickFalse) |
| 4941 | nexus_info->indexes=(IndexPacket *) (nexus_info->pixels+number_pixels); |
| 4942 | return(nexus_info->pixels); |
| 4943 | } |
| 4944 | |
| 4945 | /* |
| 4946 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4947 | % % |
| 4948 | % % |
| 4949 | % % |
| 4950 | % S e t P i x e l C a c h e V i r t u a l M e t h o d % |
| 4951 | % % |
| 4952 | % % |
| 4953 | % % |
| 4954 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4955 | % |
| 4956 | % SetPixelCacheVirtualMethod() sets the "virtual pixels" method for the |
| 4957 | % pixel cache and returns the previous setting. A virtual pixel is any pixel |
| 4958 | % access that is outside the boundaries of the image cache. |
| 4959 | % |
| 4960 | % The format of the SetPixelCacheVirtualMethod() method is: |
| 4961 | % |
| 4962 | % VirtualPixelMethod SetPixelCacheVirtualMethod(const Image *image, |
| 4963 | % const VirtualPixelMethod virtual_pixel_method) |
| 4964 | % |
| 4965 | % A description of each parameter follows: |
| 4966 | % |
| 4967 | % o image: the image. |
| 4968 | % |
| 4969 | % o virtual_pixel_method: choose the type of virtual pixel. |
| 4970 | % |
| 4971 | */ |
| 4972 | MagickExport VirtualPixelMethod SetPixelCacheVirtualMethod(const Image *image, |
| 4973 | const VirtualPixelMethod virtual_pixel_method) |
| 4974 | { |
| 4975 | CacheInfo |
| 4976 | *cache_info; |
| 4977 | |
| 4978 | VirtualPixelMethod |
| 4979 | method; |
| 4980 | |
| 4981 | assert(image != (Image *) NULL); |
| 4982 | assert(image->signature == MagickSignature); |
| 4983 | if (image->debug != MagickFalse) |
| 4984 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4985 | assert(image->cache != (Cache) NULL); |
| 4986 | cache_info=(CacheInfo *) image->cache; |
| 4987 | assert(cache_info->signature == MagickSignature); |
| 4988 | method=cache_info->virtual_pixel_method; |
| 4989 | cache_info->virtual_pixel_method=virtual_pixel_method; |
| 4990 | return(method); |
| 4991 | } |
| 4992 | |
| 4993 | /* |
| 4994 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4995 | % % |
| 4996 | % % |
| 4997 | % % |
| 4998 | + S y n c A u t h e n t i c P i x e l C a c h e N e x u s % |
| 4999 | % % |
| 5000 | % % |
| 5001 | % % |
| 5002 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5003 | % |
| 5004 | % SyncAuthenticPixelCacheNexus() saves the authentic image pixels to the |
| 5005 | % in-memory or disk cache. The method returns MagickTrue if the pixel region |
| 5006 | % is synced, otherwise MagickFalse. |
| 5007 | % |
| 5008 | % The format of the SyncAuthenticPixelCacheNexus() method is: |
| 5009 | % |
| 5010 | % MagickBooleanType SyncAuthenticPixelCacheNexus(Image *image, |
| 5011 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5012 | % |
| 5013 | % A description of each parameter follows: |
| 5014 | % |
| 5015 | % o image: the image. |
| 5016 | % |
| 5017 | % o nexus_info: the cache nexus to sync. |
| 5018 | % |
| 5019 | % o exception: return any errors or warnings in this structure. |
| 5020 | % |
| 5021 | */ |
| 5022 | MagickExport MagickBooleanType SyncAuthenticPixelCacheNexus(Image *image, |
| 5023 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5024 | { |
| 5025 | CacheInfo |
| 5026 | *cache_info; |
| 5027 | |
| 5028 | MagickBooleanType |
| 5029 | status; |
| 5030 | |
| 5031 | /* |
| 5032 | Transfer pixels to the cache. |
| 5033 | */ |
| 5034 | assert(image != (Image *) NULL); |
| 5035 | assert(image->signature == MagickSignature); |
| 5036 | if (image->debug != MagickFalse) |
| 5037 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5038 | if (image->cache == (Cache) NULL) |
| 5039 | ThrowBinaryException(CacheError,"PixelCacheIsNotOpen",image->filename); |
| 5040 | cache_info=(CacheInfo *) image->cache; |
| 5041 | if (cache_info->type == UndefinedCache) |
| 5042 | return(MagickFalse); |
| 5043 | if ((image->clip_mask != (Image *) NULL) && |
| 5044 | (ClipPixelCacheNexus(image,nexus_info,exception) == MagickFalse)) |
| 5045 | return(MagickFalse); |
| 5046 | if ((image->mask != (Image *) NULL) && |
| 5047 | (MaskPixelCacheNexus(image,nexus_info,exception) == MagickFalse)) |
| 5048 | return(MagickFalse); |
| 5049 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 5050 | return(MagickTrue); |
| 5051 | assert(cache_info->signature == MagickSignature); |
| 5052 | status=WritePixelCachePixels(cache_info,nexus_info,exception); |
| 5053 | if ((cache_info->active_index_channel != MagickFalse) && |
| 5054 | (WritePixelCacheIndexes(cache_info,nexus_info,exception) == MagickFalse)) |
| 5055 | return(MagickFalse); |
| 5056 | return(status); |
| 5057 | } |
| 5058 | |
| 5059 | /* |
| 5060 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5061 | % % |
| 5062 | % % |
| 5063 | % % |
| 5064 | + S y n c A u t h e n t i c P i x e l C a c h e % |
| 5065 | % % |
| 5066 | % % |
| 5067 | % % |
| 5068 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5069 | % |
| 5070 | % SyncAuthenticPixelsCache() saves the authentic image pixels to the in-memory |
| 5071 | % or disk cache. The method returns MagickTrue if the pixel region is synced, |
| 5072 | % otherwise MagickFalse. |
| 5073 | % |
| 5074 | % The format of the SyncAuthenticPixelsCache() method is: |
| 5075 | % |
| 5076 | % MagickBooleanType SyncAuthenticPixelsCache(Image *image, |
| 5077 | % ExceptionInfo *exception) |
| 5078 | % |
| 5079 | % A description of each parameter follows: |
| 5080 | % |
| 5081 | % o image: the image. |
| 5082 | % |
| 5083 | % o exception: return any errors or warnings in this structure. |
| 5084 | % |
| 5085 | */ |
| 5086 | static MagickBooleanType SyncAuthenticPixelsCache(Image *image, |
| 5087 | ExceptionInfo *exception) |
| 5088 | { |
| 5089 | CacheInfo |
| 5090 | *cache_info; |
| 5091 | |
| 5092 | long |
| 5093 | id; |
| 5094 | |
| 5095 | MagickBooleanType |
| 5096 | status; |
| 5097 | |
| 5098 | cache_info=(CacheInfo *) image->cache; |
| 5099 | id=GetOpenMPThreadId(); |
| 5100 | assert(id < (long) cache_info->number_threads); |
| 5101 | status=SyncAuthenticPixelCacheNexus(image,cache_info->nexus_info[id], |
| 5102 | exception); |
| 5103 | return(status); |
| 5104 | } |
| 5105 | |
| 5106 | /* |
| 5107 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5108 | % % |
| 5109 | % % |
| 5110 | % % |
| 5111 | % S y n c A u t h e n t i c P i x e l s % |
| 5112 | % % |
| 5113 | % % |
| 5114 | % % |
| 5115 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5116 | % |
| 5117 | % SyncAuthenticPixels() saves the image pixels to the in-memory or disk cache. |
| 5118 | % The method returns MagickTrue if the pixel region is flushed, otherwise |
| 5119 | % MagickFalse. |
| 5120 | % |
| 5121 | % The format of the SyncAuthenticPixels() method is: |
| 5122 | % |
| 5123 | % MagickBooleanType SyncAuthenticPixels(Image *image, |
| 5124 | % ExceptionInfo *exception) |
| 5125 | % |
| 5126 | % A description of each parameter follows: |
| 5127 | % |
| 5128 | % o image: the image. |
| 5129 | % |
| 5130 | % o exception: return any errors or warnings in this structure. |
| 5131 | % |
| 5132 | */ |
| 5133 | MagickExport MagickBooleanType SyncAuthenticPixels(Image *image, |
| 5134 | ExceptionInfo *exception) |
| 5135 | { |
| 5136 | CacheInfo |
| 5137 | *cache_info; |
| 5138 | |
| 5139 | assert(image != (Image *) NULL); |
| 5140 | assert(image->signature == MagickSignature); |
| 5141 | if (image->debug != MagickFalse) |
| 5142 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5143 | assert(image->cache != (Cache) NULL); |
| 5144 | cache_info=(CacheInfo *) image->cache; |
| 5145 | assert(cache_info->signature == MagickSignature); |
| 5146 | if (cache_info->methods.sync_authentic_pixels_handler == |
| 5147 | (SyncAuthenticPixelsHandler) NULL) |
| 5148 | return(MagickFalse); |
| 5149 | return(cache_info->methods.sync_authentic_pixels_handler(image,exception)); |
| 5150 | } |
| 5151 | |
| 5152 | /* |
| 5153 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5154 | % % |
| 5155 | % % |
| 5156 | % % |
| 5157 | + W r i t e P i x e l C a c h e I n d e x e s % |
| 5158 | % % |
| 5159 | % % |
| 5160 | % % |
| 5161 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5162 | % |
| 5163 | % WritePixelCacheIndexes() writes the colormap indexes to the specified |
| 5164 | % region of the pixel cache. |
| 5165 | % |
| 5166 | % The format of the WritePixelCacheIndexes() method is: |
| 5167 | % |
| 5168 | % MagickBooleanType WritePixelCacheIndexes(CacheInfo *cache_info, |
| 5169 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5170 | % |
| 5171 | % A description of each parameter follows: |
| 5172 | % |
| 5173 | % o cache_info: the pixel cache. |
| 5174 | % |
| 5175 | % o nexus_info: the cache nexus to write the colormap indexes. |
| 5176 | % |
| 5177 | % o exception: return any errors or warnings in this structure. |
| 5178 | % |
| 5179 | */ |
| 5180 | static MagickBooleanType WritePixelCacheIndexes(CacheInfo *cache_info, |
| 5181 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5182 | { |
| 5183 | MagickOffsetType |
| 5184 | count, |
| 5185 | offset; |
| 5186 | |
| 5187 | MagickSizeType |
| 5188 | length, |
| 5189 | number_pixels; |
| 5190 | |
| 5191 | register const IndexPacket |
| 5192 | *__restrict p; |
| 5193 | |
| 5194 | register long |
| 5195 | y; |
| 5196 | |
| 5197 | unsigned long |
| 5198 | rows; |
| 5199 | |
| 5200 | if (cache_info->debug != MagickFalse) |
| 5201 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 5202 | cache_info->filename); |
| 5203 | if (cache_info->active_index_channel == MagickFalse) |
| 5204 | return(MagickFalse); |
| 5205 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 5206 | return(MagickTrue); |
| 5207 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 5208 | nexus_info->region.x; |
| 5209 | length=(MagickSizeType) nexus_info->region.width*sizeof(IndexPacket); |
| 5210 | rows=nexus_info->region.height; |
| 5211 | number_pixels=(MagickSizeType) length*rows; |
| 5212 | if ((cache_info->columns == nexus_info->region.width) && |
| 5213 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 5214 | { |
| 5215 | length=number_pixels; |
| 5216 | rows=1UL; |
| 5217 | } |
| 5218 | p=nexus_info->indexes; |
| 5219 | switch (cache_info->type) |
| 5220 | { |
| 5221 | case MemoryCache: |
| 5222 | case MapCache: |
| 5223 | { |
| 5224 | register IndexPacket |
| 5225 | *__restrict q; |
| 5226 | |
| 5227 | /* |
| 5228 | Write indexes to memory. |
| 5229 | */ |
| 5230 | q=cache_info->indexes+offset; |
| 5231 | for (y=0; y < (long) rows; y++) |
| 5232 | { |
| 5233 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 5234 | p+=nexus_info->region.width; |
| 5235 | q+=cache_info->columns; |
| 5236 | } |
| 5237 | break; |
| 5238 | } |
| 5239 | case DiskCache: |
| 5240 | { |
| 5241 | /* |
| 5242 | Write indexes to disk. |
| 5243 | */ |
| 5244 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 5245 | { |
| 5246 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 5247 | cache_info->cache_filename); |
| 5248 | return(MagickFalse); |
| 5249 | } |
| 5250 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 5251 | for (y=0; y < (long) rows; y++) |
| 5252 | { |
| 5253 | count=WritePixelCacheRegion(cache_info,cache_info->offset+number_pixels* |
| 5254 | sizeof(PixelPacket)+offset*sizeof(*p),length, |
| 5255 | (const unsigned char *) p); |
| 5256 | if ((MagickSizeType) count < length) |
| 5257 | break; |
| 5258 | p+=nexus_info->region.width; |
| 5259 | offset+=cache_info->columns; |
| 5260 | } |
| 5261 | if (y < (long) rows) |
| 5262 | { |
| 5263 | ThrowFileException(exception,CacheError,"UnableToWritePixelCache", |
| 5264 | cache_info->cache_filename); |
| 5265 | return(MagickFalse); |
| 5266 | } |
| 5267 | break; |
| 5268 | } |
| 5269 | default: |
| 5270 | break; |
| 5271 | } |
| 5272 | if ((cache_info->debug != MagickFalse) && |
| 5273 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 5274 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 5275 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 5276 | nexus_info->region.x,nexus_info->region.y); |
| 5277 | return(MagickTrue); |
| 5278 | } |
| 5279 | |
| 5280 | /* |
| 5281 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5282 | % % |
| 5283 | % % |
| 5284 | % % |
| 5285 | + W r i t e C a c h e P i x e l s % |
| 5286 | % % |
| 5287 | % % |
| 5288 | % % |
| 5289 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5290 | % |
| 5291 | % WritePixelCachePixels() writes image pixels to the specified region of the |
| 5292 | % pixel cache. |
| 5293 | % |
| 5294 | % The format of the WritePixelCachePixels() method is: |
| 5295 | % |
| 5296 | % MagickBooleanType WritePixelCachePixels(CacheInfo *cache_info, |
| 5297 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5298 | % |
| 5299 | % A description of each parameter follows: |
| 5300 | % |
| 5301 | % o cache_info: the pixel cache. |
| 5302 | % |
| 5303 | % o nexus_info: the cache nexus to write the pixels. |
| 5304 | % |
| 5305 | % o exception: return any errors or warnings in this structure. |
| 5306 | % |
| 5307 | */ |
| 5308 | static MagickBooleanType WritePixelCachePixels(CacheInfo *cache_info, |
| 5309 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5310 | { |
| 5311 | MagickOffsetType |
| 5312 | count, |
| 5313 | offset; |
| 5314 | |
| 5315 | MagickSizeType |
| 5316 | length, |
| 5317 | number_pixels; |
| 5318 | |
| 5319 | register long |
| 5320 | y; |
| 5321 | |
| 5322 | register const PixelPacket |
| 5323 | *__restrict p; |
| 5324 | |
| 5325 | unsigned long |
| 5326 | rows; |
| 5327 | |
| 5328 | if (cache_info->debug != MagickFalse) |
| 5329 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 5330 | cache_info->filename); |
| 5331 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 5332 | return(MagickTrue); |
| 5333 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 5334 | nexus_info->region.x; |
| 5335 | length=(MagickSizeType) nexus_info->region.width*sizeof(PixelPacket); |
| 5336 | rows=nexus_info->region.height; |
| 5337 | number_pixels=length*rows; |
| 5338 | if ((cache_info->columns == nexus_info->region.width) && |
| 5339 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 5340 | { |
| 5341 | length=number_pixels; |
| 5342 | rows=1UL; |
| 5343 | } |
| 5344 | p=nexus_info->pixels; |
| 5345 | switch (cache_info->type) |
| 5346 | { |
| 5347 | case MemoryCache: |
| 5348 | case MapCache: |
| 5349 | { |
| 5350 | register PixelPacket |
| 5351 | *__restrict q; |
| 5352 | |
| 5353 | /* |
| 5354 | Write pixels to memory. |
| 5355 | */ |
| 5356 | q=cache_info->pixels+offset; |
| 5357 | for (y=0; y < (long) rows; y++) |
| 5358 | { |
| 5359 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 5360 | p+=nexus_info->region.width; |
| 5361 | q+=cache_info->columns; |
| 5362 | } |
| 5363 | break; |
| 5364 | } |
| 5365 | case DiskCache: |
| 5366 | { |
| 5367 | /* |
| 5368 | Write pixels to disk. |
| 5369 | */ |
| 5370 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 5371 | { |
| 5372 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 5373 | cache_info->cache_filename); |
| 5374 | return(MagickFalse); |
| 5375 | } |
| 5376 | for (y=0; y < (long) rows; y++) |
| 5377 | { |
| 5378 | count=WritePixelCacheRegion(cache_info,cache_info->offset+offset* |
| 5379 | sizeof(*p),length,(const unsigned char *) p); |
| 5380 | if ((MagickSizeType) count < length) |
| 5381 | break; |
| 5382 | p+=nexus_info->region.width; |
| 5383 | offset+=cache_info->columns; |
| 5384 | } |
| 5385 | if (y < (long) rows) |
| 5386 | { |
| 5387 | ThrowFileException(exception,CacheError,"UnableToWritePixelCache", |
| 5388 | cache_info->cache_filename); |
| 5389 | return(MagickFalse); |
| 5390 | } |
| 5391 | break; |
| 5392 | } |
| 5393 | default: |
| 5394 | break; |
| 5395 | } |
| 5396 | if ((cache_info->debug != MagickFalse) && |
| 5397 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 5398 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 5399 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 5400 | nexus_info->region.x,nexus_info->region.y); |
| 5401 | return(MagickTrue); |
| 5402 | } |