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 | % % |
cristy | 16af1cb | 2009-12-11 21:38:29 +0000 | [diff] [blame] | 20 | % Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 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" |
cristy | 4789f0d | 2010-01-10 00:01:06 +0000 | [diff] [blame] | 56 | #include "magick/pixel.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 57 | #include "magick/pixel-private.h" |
| 58 | #include "magick/quantum.h" |
| 59 | #include "magick/random_.h" |
| 60 | #include "magick/resource_.h" |
| 61 | #include "magick/semaphore.h" |
| 62 | #include "magick/splay-tree.h" |
| 63 | #include "magick/string_.h" |
| 64 | #include "magick/thread-private.h" |
| 65 | #include "magick/utility.h" |
| 66 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 67 | #include "zlib.h" |
| 68 | #endif |
| 69 | |
| 70 | /* |
| 71 | Typedef declarations. |
| 72 | */ |
| 73 | typedef struct _MagickModulo |
| 74 | { |
| 75 | long |
| 76 | quotient, |
| 77 | remainder; |
| 78 | } MagickModulo; |
| 79 | |
| 80 | struct _NexusInfo |
| 81 | { |
| 82 | MagickBooleanType |
| 83 | mapped; |
| 84 | |
| 85 | RectangleInfo |
| 86 | region; |
| 87 | |
| 88 | MagickSizeType |
| 89 | length; |
| 90 | |
| 91 | PixelPacket |
| 92 | *cache, |
| 93 | *pixels; |
| 94 | |
| 95 | IndexPacket |
| 96 | *indexes; |
| 97 | |
| 98 | unsigned long |
| 99 | signature; |
| 100 | }; |
| 101 | |
| 102 | /* |
| 103 | Forward declarations. |
| 104 | */ |
| 105 | #if defined(__cplusplus) || defined(c_plusplus) |
| 106 | extern "C" { |
| 107 | #endif |
| 108 | |
| 109 | static const IndexPacket |
| 110 | *GetVirtualIndexesFromCache(const Image *); |
| 111 | |
| 112 | static const PixelPacket |
| 113 | *GetVirtualPixelCache(const Image *,const VirtualPixelMethod,const long, |
| 114 | const long,const unsigned long,const unsigned long,ExceptionInfo *), |
| 115 | *GetVirtualPixelsCache(const Image *); |
| 116 | |
| 117 | static MagickBooleanType |
| 118 | GetOneAuthenticPixelFromCache(Image *,const long,const long,PixelPacket *, |
| 119 | ExceptionInfo *), |
| 120 | GetOneVirtualPixelFromCache(const Image *,const VirtualPixelMethod, |
| 121 | const long,const long,PixelPacket *,ExceptionInfo *), |
| 122 | OpenPixelCache(Image *,const MapMode,ExceptionInfo *), |
| 123 | ReadPixelCacheIndexes(CacheInfo *,NexusInfo *,ExceptionInfo *), |
| 124 | ReadPixelCachePixels(CacheInfo *,NexusInfo *,ExceptionInfo *), |
| 125 | SyncAuthenticPixelsCache(Image *,ExceptionInfo *), |
| 126 | WritePixelCacheIndexes(CacheInfo *,NexusInfo *,ExceptionInfo *), |
| 127 | WritePixelCachePixels(CacheInfo *,NexusInfo *,ExceptionInfo *); |
| 128 | |
| 129 | static PixelPacket |
| 130 | *GetAuthenticPixelsCache(Image *,const long,const long,const unsigned long, |
| 131 | const unsigned long,ExceptionInfo *), |
| 132 | *QueueAuthenticPixelsCache(Image *,const long,const long,const unsigned long, |
| 133 | const unsigned long,ExceptionInfo *), |
| 134 | *SetPixelCacheNexusPixels(const Image *,const RectangleInfo *,NexusInfo *, |
| 135 | ExceptionInfo *); |
| 136 | |
| 137 | #if defined(__cplusplus) || defined(c_plusplus) |
| 138 | } |
| 139 | #endif |
| 140 | |
| 141 | /* |
| 142 | Global declarations. |
| 143 | */ |
| 144 | static volatile MagickBooleanType |
| 145 | instantiate_cache = MagickFalse; |
| 146 | |
| 147 | static SemaphoreInfo |
| 148 | *cache_semaphore = (SemaphoreInfo *) NULL; |
| 149 | |
| 150 | static SplayTreeInfo |
| 151 | *cache_resources = (SplayTreeInfo *) NULL; |
| 152 | |
| 153 | static time_t |
| 154 | cache_timer = 0; |
| 155 | |
| 156 | /* |
| 157 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 158 | % % |
| 159 | % % |
| 160 | % % |
| 161 | + A c q u i r e P i x e l C a c h e % |
| 162 | % % |
| 163 | % % |
| 164 | % % |
| 165 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 166 | % |
| 167 | % AcquirePixelCache() acquires a pixel cache. |
| 168 | % |
| 169 | % The format of the AcquirePixelCache() method is: |
| 170 | % |
| 171 | % Cache AcquirePixelCache(const unsigned long number_threads) |
| 172 | % |
| 173 | % A description of each parameter follows: |
| 174 | % |
| 175 | % o number_threads: the number of nexus threads. |
| 176 | % |
| 177 | */ |
| 178 | MagickExport Cache AcquirePixelCache(const unsigned long number_threads) |
| 179 | { |
| 180 | CacheInfo |
| 181 | *cache_info; |
| 182 | |
| 183 | cache_info=(CacheInfo *) AcquireAlignedMemory(1,sizeof(*cache_info)); |
| 184 | if (cache_info == (CacheInfo *) NULL) |
| 185 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 186 | (void) ResetMagickMemory(cache_info,0,sizeof(*cache_info)); |
| 187 | cache_info->type=UndefinedCache; |
cristy | 87528ea | 2009-09-10 14:53:56 +0000 | [diff] [blame] | 188 | cache_info->mode=IOMode; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 189 | cache_info->colorspace=RGBColorspace; |
| 190 | cache_info->file=(-1); |
| 191 | cache_info->id=GetMagickThreadId(); |
| 192 | cache_info->number_threads=number_threads; |
| 193 | if (number_threads == 0) |
| 194 | cache_info->number_threads=GetOpenMPMaximumThreads(); |
| 195 | cache_info->nexus_info=AcquirePixelCacheNexus(cache_info->number_threads); |
| 196 | if (cache_info->nexus_info == (NexusInfo **) NULL) |
| 197 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 198 | GetPixelCacheMethods(&cache_info->methods); |
| 199 | cache_info->reference_count=1; |
| 200 | cache_info->semaphore=AllocateSemaphoreInfo(); |
| 201 | cache_info->disk_semaphore=AllocateSemaphoreInfo(); |
| 202 | cache_info->debug=IsEventLogging(); |
| 203 | cache_info->signature=MagickSignature; |
| 204 | if ((cache_resources == (SplayTreeInfo *) NULL) && |
| 205 | (instantiate_cache == MagickFalse)) |
| 206 | { |
cristy | 4e1dff6 | 2009-10-25 20:36:03 +0000 | [diff] [blame] | 207 | if (cache_semaphore == (SemaphoreInfo *) NULL) |
| 208 | AcquireSemaphoreInfo(&cache_semaphore); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 209 | LockSemaphoreInfo(cache_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 210 | if ((cache_resources == (SplayTreeInfo *) NULL) && |
| 211 | (instantiate_cache == MagickFalse)) |
| 212 | { |
| 213 | cache_resources=NewSplayTree((int (*)(const void *,const void *)) |
| 214 | NULL,(void *(*)(void *)) NULL,(void *(*)(void *)) NULL); |
| 215 | instantiate_cache=MagickTrue; |
| 216 | } |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 217 | UnlockSemaphoreInfo(cache_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 218 | } |
| 219 | (void) AddValueToSplayTree(cache_resources,cache_info,cache_info); |
| 220 | return((Cache ) cache_info); |
| 221 | } |
| 222 | |
| 223 | /* |
| 224 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 225 | % % |
| 226 | % % |
| 227 | % % |
| 228 | % A c q u i r e P i x e l C a c h e N e x u s % |
| 229 | % % |
| 230 | % % |
| 231 | % % |
| 232 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 233 | % |
| 234 | % AcquirePixelCacheNexus() allocates the NexusInfo structure. |
| 235 | % |
| 236 | % The format of the AcquirePixelCacheNexus method is: |
| 237 | % |
| 238 | % NexusInfo **AcquirePixelCacheNexus(const unsigned long number_threads) |
| 239 | % |
| 240 | % A description of each parameter follows: |
| 241 | % |
| 242 | % o number_threads: the number of nexus threads. |
| 243 | % |
| 244 | */ |
| 245 | MagickExport NexusInfo **AcquirePixelCacheNexus( |
| 246 | const unsigned long number_threads) |
| 247 | { |
| 248 | register long |
| 249 | i; |
| 250 | |
| 251 | NexusInfo |
| 252 | **nexus_info; |
| 253 | |
| 254 | nexus_info=(NexusInfo **) AcquireAlignedMemory(number_threads, |
| 255 | sizeof(*nexus_info)); |
| 256 | if (nexus_info == (NexusInfo **) NULL) |
| 257 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 258 | for (i=0; i < (long) number_threads; i++) |
| 259 | { |
| 260 | nexus_info[i]=(NexusInfo *) AcquireAlignedMemory(1,sizeof(**nexus_info)); |
| 261 | if (nexus_info[i] == (NexusInfo *) NULL) |
| 262 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 263 | (void) ResetMagickMemory(nexus_info[i],0,sizeof(*nexus_info[i])); |
| 264 | nexus_info[i]->signature=MagickSignature; |
| 265 | } |
| 266 | return(nexus_info); |
| 267 | } |
| 268 | |
| 269 | /* |
| 270 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 271 | % % |
| 272 | % % |
| 273 | % % |
cristy | d43a46b | 2010-01-21 02:13:41 +0000 | [diff] [blame] | 274 | + A c q u i r e P i x e l C a c h e P i x e l s % |
| 275 | % % |
| 276 | % % |
| 277 | % % |
| 278 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 279 | % |
| 280 | % AcquirePixelCachePixels() returns the pixels associated with the specified |
| 281 | % image. |
| 282 | % |
| 283 | % The format of the AcquirePixelCachePixels() method is: |
| 284 | % |
| 285 | % const void *AcquirePixelCachePixels(const Image *image, |
| 286 | % MagickSizeType *length,ExceptionInfo *exception) |
| 287 | % |
| 288 | % A description of each parameter follows: |
| 289 | % |
| 290 | % o image: the image. |
| 291 | % |
| 292 | % o length: the pixel cache length. |
| 293 | % |
| 294 | % o exception: return any errors or warnings in this structure. |
| 295 | % |
| 296 | */ |
| 297 | MagickExport const void *AcquirePixelCachePixels(const Image *image, |
| 298 | MagickSizeType *length,ExceptionInfo *exception) |
| 299 | { |
| 300 | CacheInfo |
| 301 | *cache_info; |
| 302 | |
| 303 | assert(image != (const Image *) NULL); |
| 304 | assert(image->signature == MagickSignature); |
| 305 | if (image->debug != MagickFalse) |
| 306 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 307 | assert(exception != (ExceptionInfo *) NULL); |
| 308 | assert(exception->signature == MagickSignature); |
| 309 | assert(image->cache != (Cache) NULL); |
| 310 | cache_info=(CacheInfo *) image->cache; |
| 311 | assert(cache_info->signature == MagickSignature); |
| 312 | *length=0; |
| 313 | if ((cache_info->type != MemoryCache) && (cache_info->type != MapCache)) |
| 314 | return((const void *) NULL); |
| 315 | *length=cache_info->length; |
| 316 | return((const void *) cache_info->pixels); |
| 317 | } |
| 318 | |
| 319 | /* |
| 320 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 321 | % % |
| 322 | % % |
| 323 | % % |
cristy | f34a145 | 2009-10-24 22:29:27 +0000 | [diff] [blame] | 324 | + C a c h e C o m p o n e n t G e n e s i s % |
| 325 | % % |
| 326 | % % |
| 327 | % % |
| 328 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 329 | % |
| 330 | % CacheComponentGenesis() instantiates the cache component. |
| 331 | % |
| 332 | % The format of the CacheComponentGenesis method is: |
| 333 | % |
| 334 | % MagickBooleanType CacheComponentGenesis(void) |
| 335 | % |
| 336 | */ |
| 337 | MagickExport MagickBooleanType CacheComponentGenesis(void) |
| 338 | { |
cristy | 165b609 | 2009-10-26 13:52:10 +0000 | [diff] [blame] | 339 | AcquireSemaphoreInfo(&cache_semaphore); |
cristy | f34a145 | 2009-10-24 22:29:27 +0000 | [diff] [blame] | 340 | return(MagickTrue); |
| 341 | } |
| 342 | |
| 343 | /* |
| 344 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 345 | % % |
| 346 | % % |
| 347 | % % |
| 348 | + C a c h e C o m p o n e n t T e r m i n u s % |
| 349 | % % |
| 350 | % % |
| 351 | % % |
| 352 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 353 | % |
| 354 | % CacheComponentTerminus() destroys the cache component. |
| 355 | % |
| 356 | % The format of the CacheComponentTerminus() method is: |
| 357 | % |
| 358 | % CacheComponentTerminus(void) |
| 359 | % |
| 360 | */ |
| 361 | MagickExport void CacheComponentTerminus(void) |
| 362 | { |
cristy | 18b1744 | 2009-10-25 18:36:48 +0000 | [diff] [blame] | 363 | if (cache_semaphore == (SemaphoreInfo *) NULL) |
| 364 | AcquireSemaphoreInfo(&cache_semaphore); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 365 | LockSemaphoreInfo(cache_semaphore); |
cristy | f34a145 | 2009-10-24 22:29:27 +0000 | [diff] [blame] | 366 | if (cache_resources != (SplayTreeInfo *) NULL) |
| 367 | cache_resources=DestroySplayTree(cache_resources); |
| 368 | instantiate_cache=MagickFalse; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 369 | UnlockSemaphoreInfo(cache_semaphore); |
cristy | f34a145 | 2009-10-24 22:29:27 +0000 | [diff] [blame] | 370 | DestroySemaphoreInfo(&cache_semaphore); |
| 371 | } |
| 372 | |
| 373 | /* |
| 374 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 375 | % % |
| 376 | % % |
| 377 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 378 | + C l i p P i x e l C a c h e N e x u s % |
| 379 | % % |
| 380 | % % |
| 381 | % % |
| 382 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 383 | % |
| 384 | % ClipPixelCacheNexus() clips the cache nexus as defined by the image clip |
| 385 | % mask. The method returns MagickTrue if the pixel region is clipped, |
| 386 | % otherwise MagickFalse. |
| 387 | % |
| 388 | % The format of the ClipPixelCacheNexus() method is: |
| 389 | % |
| 390 | % MagickBooleanType ClipPixelCacheNexus(Image *image,NexusInfo *nexus_info, |
| 391 | % ExceptionInfo *exception) |
| 392 | % |
| 393 | % A description of each parameter follows: |
| 394 | % |
| 395 | % o image: the image. |
| 396 | % |
| 397 | % o nexus_info: the cache nexus to clip. |
| 398 | % |
| 399 | % o exception: return any errors or warnings in this structure. |
| 400 | % |
| 401 | */ |
| 402 | static MagickBooleanType ClipPixelCacheNexus(Image *image, |
| 403 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 404 | { |
| 405 | CacheInfo |
| 406 | *cache_info; |
| 407 | |
| 408 | MagickSizeType |
| 409 | number_pixels; |
| 410 | |
| 411 | NexusInfo |
| 412 | **clip_nexus, |
| 413 | **image_nexus; |
| 414 | |
| 415 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 416 | *restrict r; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 417 | |
| 418 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 419 | *restrict nexus_indexes, |
| 420 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 421 | |
| 422 | register long |
| 423 | i; |
| 424 | |
| 425 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 426 | *restrict p, |
| 427 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 428 | |
| 429 | /* |
| 430 | Apply clip mask. |
| 431 | */ |
| 432 | if (image->debug != MagickFalse) |
| 433 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 434 | if (image->clip_mask == (Image *) NULL) |
| 435 | return(MagickFalse); |
| 436 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickTrue,exception); |
| 437 | if (cache_info == (Cache) NULL) |
| 438 | return(MagickFalse); |
| 439 | image_nexus=AcquirePixelCacheNexus(1); |
| 440 | clip_nexus=AcquirePixelCacheNexus(1); |
| 441 | if ((image_nexus == (NexusInfo **) NULL) || |
| 442 | (clip_nexus == (NexusInfo **) NULL)) |
| 443 | ThrowBinaryException(CacheError,"UnableToGetCacheNexus",image->filename); |
| 444 | p=GetAuthenticPixelCacheNexus(image,nexus_info->region.x,nexus_info->region.y, |
| 445 | nexus_info->region.width,nexus_info->region.height,image_nexus[0], |
| 446 | exception); |
| 447 | indexes=GetPixelCacheNexusIndexes(image->cache,image_nexus[0]); |
| 448 | q=nexus_info->pixels; |
| 449 | nexus_indexes=nexus_info->indexes; |
| 450 | r=GetVirtualPixelsFromNexus(image->clip_mask,MaskVirtualPixelMethod, |
| 451 | nexus_info->region.x,nexus_info->region.y,nexus_info->region.width, |
| 452 | nexus_info->region.height,clip_nexus[0],exception); |
| 453 | number_pixels=(MagickSizeType) nexus_info->region.width* |
| 454 | nexus_info->region.height; |
| 455 | for (i=0; i < (long) number_pixels; i++) |
| 456 | { |
| 457 | if ((p == (PixelPacket *) NULL) || (r == (const PixelPacket *) NULL)) |
| 458 | break; |
| 459 | if (PixelIntensityToQuantum(r) > ((Quantum) QuantumRange/2)) |
| 460 | { |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 461 | SetRedPixelComponent(q,GetRedPixelComponent(p)); |
| 462 | SetGreenPixelComponent(q,GetGreenPixelComponent(p)); |
| 463 | SetBluePixelComponent(q,GetBluePixelComponent(p)); |
| 464 | SetOpacityPixelComponent(q,GetOpacityPixelComponent(p)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 465 | if (cache_info->active_index_channel != MagickFalse) |
| 466 | nexus_indexes[i]=indexes[i]; |
| 467 | } |
| 468 | p++; |
| 469 | q++; |
| 470 | r++; |
| 471 | } |
| 472 | clip_nexus=DestroyPixelCacheNexus(clip_nexus,1); |
| 473 | image_nexus=DestroyPixelCacheNexus(image_nexus,1); |
| 474 | if (i < (long) number_pixels) |
| 475 | return(MagickFalse); |
| 476 | return(MagickTrue); |
| 477 | } |
| 478 | |
| 479 | /* |
| 480 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 481 | % % |
| 482 | % % |
| 483 | % % |
| 484 | + C l o n e P i x e l C a c h e % |
| 485 | % % |
| 486 | % % |
| 487 | % % |
| 488 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 489 | % |
| 490 | % ClonePixelCache() clones a pixel cache. |
| 491 | % |
| 492 | % The format of the ClonePixelCache() method is: |
| 493 | % |
| 494 | % Cache ClonePixelCache(const Cache cache) |
| 495 | % |
| 496 | % A description of each parameter follows: |
| 497 | % |
| 498 | % o cache: the pixel cache. |
| 499 | % |
| 500 | */ |
| 501 | MagickExport Cache ClonePixelCache(const Cache cache) |
| 502 | { |
| 503 | CacheInfo |
| 504 | *clone_info; |
| 505 | |
| 506 | const CacheInfo |
| 507 | *cache_info; |
| 508 | |
| 509 | assert(cache != (const Cache) NULL); |
| 510 | cache_info=(const CacheInfo *) cache; |
| 511 | assert(cache_info->signature == MagickSignature); |
| 512 | if (cache_info->debug != MagickFalse) |
| 513 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 514 | cache_info->filename); |
| 515 | clone_info=(CacheInfo *) AcquirePixelCache(cache_info->number_threads); |
| 516 | if (clone_info == (Cache) NULL) |
| 517 | return((Cache) NULL); |
| 518 | clone_info->virtual_pixel_method=cache_info->virtual_pixel_method; |
| 519 | return((Cache ) clone_info); |
| 520 | } |
| 521 | |
| 522 | /* |
| 523 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 524 | % % |
| 525 | % % |
| 526 | % % |
| 527 | + C l o n e P i x e l C a c h e N e x u s % |
| 528 | % % |
| 529 | % % |
| 530 | % % |
| 531 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 532 | % |
| 533 | % ClonePixelCacheNexus() clones the source cache nexus to the destination |
| 534 | % nexus. |
| 535 | % |
| 536 | % The format of the ClonePixelCacheNexus() method is: |
| 537 | % |
| 538 | % MagickBooleanType ClonePixelCacheNexus(CacheInfo *destination, |
| 539 | % CacheInfo *source,ExceptionInfo *exception) |
| 540 | % |
| 541 | % A description of each parameter follows: |
| 542 | % |
| 543 | % o destination: the destination cache nexus. |
| 544 | % |
| 545 | % o source: the source cache nexus. |
| 546 | % |
| 547 | % o exception: return any errors or warnings in this structure. |
| 548 | % |
| 549 | */ |
| 550 | |
| 551 | static inline MagickBooleanType AcquireCacheNexusPixels(CacheInfo *cache_info, |
| 552 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 553 | { |
| 554 | if (nexus_info->length != (MagickSizeType) ((size_t) nexus_info->length)) |
| 555 | return(MagickFalse); |
| 556 | nexus_info->mapped=MagickFalse; |
| 557 | nexus_info->cache=(PixelPacket *) AcquireMagickMemory((size_t) |
| 558 | nexus_info->length); |
| 559 | if (nexus_info->cache == (PixelPacket *) NULL) |
| 560 | { |
| 561 | nexus_info->mapped=MagickTrue; |
| 562 | nexus_info->cache=(PixelPacket *) MapBlob(-1,IOMode,0,(size_t) |
| 563 | nexus_info->length); |
| 564 | } |
| 565 | if (nexus_info->cache == (PixelPacket *) NULL) |
| 566 | { |
| 567 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 568 | ResourceLimitError,"MemoryAllocationFailed","`%s'", |
| 569 | cache_info->filename); |
| 570 | return(MagickFalse); |
| 571 | } |
| 572 | return(MagickTrue); |
| 573 | } |
| 574 | |
| 575 | static MagickBooleanType ClonePixelCacheNexus(CacheInfo *destination, |
| 576 | CacheInfo *source,ExceptionInfo *exception) |
| 577 | { |
| 578 | MagickBooleanType |
| 579 | status; |
| 580 | |
| 581 | MagickSizeType |
| 582 | number_pixels; |
| 583 | |
| 584 | register long |
| 585 | i; |
| 586 | |
| 587 | register const NexusInfo |
| 588 | *p; |
| 589 | |
| 590 | register NexusInfo |
| 591 | *q; |
| 592 | |
| 593 | status=MagickTrue; |
| 594 | for (i=0; i < (long) source->number_threads; i++) |
| 595 | { |
| 596 | p=source->nexus_info[i]; |
| 597 | q=destination->nexus_info[i]; |
| 598 | q->mapped=p->mapped; |
| 599 | q->region=p->region; |
| 600 | q->length=p->length; |
| 601 | q->cache=p->cache; |
| 602 | q->pixels=p->pixels; |
| 603 | q->indexes=p->indexes; |
| 604 | if (p->cache != (PixelPacket *) NULL) |
| 605 | { |
| 606 | status=AcquireCacheNexusPixels(source,q,exception); |
| 607 | if (status != MagickFalse) |
| 608 | { |
| 609 | (void) CopyMagickMemory(q->cache,p->cache,(size_t) p->length); |
| 610 | q->pixels=q->cache; |
| 611 | q->indexes=(IndexPacket *) NULL; |
| 612 | number_pixels=(MagickSizeType) q->region.width*q->region.height; |
| 613 | if (p->indexes != (IndexPacket *) NULL) |
| 614 | q->indexes=(IndexPacket *) (q->pixels+number_pixels); |
| 615 | } |
| 616 | } |
| 617 | } |
| 618 | return(status); |
| 619 | } |
| 620 | |
| 621 | /* |
| 622 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 623 | % % |
| 624 | % % |
| 625 | % % |
cristy | 60c44a8 | 2009-10-07 00:58:49 +0000 | [diff] [blame] | 626 | + C l o n e P i x e l C a c h e P i x e l s % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 627 | % % |
| 628 | % % |
| 629 | % % |
| 630 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % |
| 631 | % ClonePixelCachePixels() clones the source pixel cache to the destination |
| 632 | % cache. |
| 633 | % |
| 634 | % The format of the ClonePixelCachePixels() method is: |
| 635 | % |
| 636 | % MagickBooleanType ClonePixelCachePixels(CacheInfo *cache_info, |
| 637 | % CacheInfo *source_info,ExceptionInfo *exception) |
| 638 | % |
| 639 | % A description of each parameter follows: |
| 640 | % |
| 641 | % o cache_info: the pixel cache. |
| 642 | % |
| 643 | % o source_info: the source pixel cache. |
| 644 | % |
| 645 | % o exception: return any errors or warnings in this structure. |
| 646 | % |
| 647 | */ |
| 648 | |
| 649 | static MagickBooleanType ClosePixelCacheOnDisk(CacheInfo *cache_info) |
| 650 | { |
| 651 | int |
| 652 | status; |
| 653 | |
cristy | 5ee247a | 2010-02-12 15:42:34 +0000 | [diff] [blame] | 654 | status=(-1); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 655 | LockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 508d931 | 2010-02-10 21:10:30 +0000 | [diff] [blame] | 656 | if (cache_info->file != -1) |
| 657 | status=close(cache_info->file); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 658 | cache_info->file=(-1); |
| 659 | RelinquishMagickResource(FileResource,1); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 660 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 661 | return(status == -1 ? MagickFalse : MagickTrue); |
| 662 | } |
| 663 | |
| 664 | static void LimitPixelCacheDescriptors(void) |
| 665 | { |
| 666 | register CacheInfo |
| 667 | *p, |
| 668 | *q; |
| 669 | |
| 670 | /* |
| 671 | Limit # of open file descriptors. |
| 672 | */ |
| 673 | if (GetMagickResource(FileResource) < GetMagickResourceLimit(FileResource)) |
| 674 | return; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 675 | LockSemaphoreInfo(cache_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 676 | if (cache_resources == (SplayTreeInfo *) NULL) |
| 677 | { |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 678 | UnlockSemaphoreInfo(cache_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 679 | return; |
| 680 | } |
| 681 | ResetSplayTreeIterator(cache_resources); |
| 682 | p=(CacheInfo *) GetNextKeyInSplayTree(cache_resources); |
| 683 | while (p != (CacheInfo *) NULL) |
| 684 | { |
| 685 | if ((p->type == DiskCache) && (p->file != -1)) |
cristy | 508d931 | 2010-02-10 21:10:30 +0000 | [diff] [blame] | 686 | break; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 687 | p=(CacheInfo *) GetNextKeyInSplayTree(cache_resources); |
| 688 | } |
| 689 | for (q=p; p != (CacheInfo *) NULL; ) |
| 690 | { |
| 691 | if ((p->type == DiskCache) && (p->file != -1) && |
| 692 | (p->timestamp < q->timestamp)) |
cristy | 508d931 | 2010-02-10 21:10:30 +0000 | [diff] [blame] | 693 | q=p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 694 | p=(CacheInfo *) GetNextKeyInSplayTree(cache_resources); |
| 695 | } |
| 696 | if (q != (CacheInfo *) NULL) |
cristy | 9e11692 | 2010-02-12 20:58:13 +0000 | [diff] [blame^] | 697 | { |
| 698 | /* |
| 699 | Close least recently used cache. |
| 700 | */ |
| 701 | (void) close(q->file); |
| 702 | q->file=(-1); |
| 703 | } |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 704 | UnlockSemaphoreInfo(cache_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 705 | } |
| 706 | |
| 707 | static inline MagickSizeType MagickMax(const MagickSizeType x, |
| 708 | const MagickSizeType y) |
| 709 | { |
| 710 | if (x > y) |
| 711 | return(x); |
| 712 | return(y); |
| 713 | } |
| 714 | |
| 715 | static inline MagickSizeType MagickMin(const MagickSizeType x, |
| 716 | const MagickSizeType y) |
| 717 | { |
| 718 | if (x < y) |
| 719 | return(x); |
| 720 | return(y); |
| 721 | } |
| 722 | |
| 723 | static MagickBooleanType OpenPixelCacheOnDisk(CacheInfo *cache_info, |
| 724 | const MapMode mode) |
| 725 | { |
| 726 | int |
| 727 | file; |
| 728 | |
| 729 | /* |
| 730 | Open pixel cache on disk. |
| 731 | */ |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 732 | LockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 733 | if (cache_info->file != -1) |
| 734 | { |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 735 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 736 | return(MagickTrue); /* cache already open */ |
| 737 | } |
| 738 | LimitPixelCacheDescriptors(); |
| 739 | if (*cache_info->cache_filename == '\0') |
| 740 | file=AcquireUniqueFileResource(cache_info->cache_filename); |
| 741 | else |
| 742 | switch (mode) |
| 743 | { |
| 744 | case ReadMode: |
| 745 | { |
| 746 | file=open(cache_info->cache_filename,O_RDONLY | O_BINARY); |
| 747 | break; |
| 748 | } |
| 749 | case WriteMode: |
| 750 | { |
| 751 | file=open(cache_info->cache_filename,O_WRONLY | O_CREAT | O_BINARY | |
| 752 | O_EXCL,S_MODE); |
| 753 | if (file == -1) |
| 754 | file=open(cache_info->cache_filename,O_WRONLY | O_BINARY,S_MODE); |
| 755 | break; |
| 756 | } |
| 757 | case IOMode: |
| 758 | default: |
| 759 | { |
| 760 | file=open(cache_info->cache_filename,O_RDWR | O_CREAT | O_BINARY | |
| 761 | O_EXCL,S_MODE); |
| 762 | if (file == -1) |
| 763 | file=open(cache_info->cache_filename,O_RDWR | O_BINARY,S_MODE); |
| 764 | break; |
| 765 | } |
| 766 | } |
| 767 | if (file == -1) |
| 768 | { |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 769 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 770 | return(MagickFalse); |
| 771 | } |
| 772 | (void) AcquireMagickResource(FileResource,1); |
| 773 | cache_info->file=file; |
| 774 | cache_info->timestamp=time(0); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 775 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 776 | return(MagickTrue); |
| 777 | } |
| 778 | |
| 779 | static inline MagickOffsetType ReadPixelCacheRegion(CacheInfo *cache_info, |
| 780 | const MagickOffsetType offset,const MagickSizeType length, |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 781 | unsigned char *restrict buffer) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 782 | { |
| 783 | register MagickOffsetType |
| 784 | i; |
| 785 | |
| 786 | ssize_t |
| 787 | count; |
| 788 | |
| 789 | #if !defined(MAGICKCORE_HAVE_PREAD) |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 790 | LockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 791 | cache_info->timestamp=time(0); |
| 792 | if (MagickSeek(cache_info->file,offset,SEEK_SET) < 0) |
| 793 | { |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 794 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 795 | return((MagickOffsetType) -1); |
| 796 | } |
| 797 | #endif |
| 798 | count=0; |
| 799 | for (i=0; i < (MagickOffsetType) length; i+=count) |
| 800 | { |
| 801 | #if !defined(MAGICKCORE_HAVE_PREAD) |
| 802 | count=read(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 803 | (MagickSizeType) SSIZE_MAX)); |
| 804 | #else |
| 805 | count=pread(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 806 | (MagickSizeType) SSIZE_MAX),(off_t) (offset+i)); |
| 807 | #endif |
| 808 | if (count > 0) |
| 809 | continue; |
| 810 | count=0; |
| 811 | if (errno != EINTR) |
| 812 | { |
| 813 | i=(-1); |
| 814 | break; |
| 815 | } |
| 816 | } |
| 817 | #if !defined(MAGICKCORE_HAVE_PREAD) |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 818 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 819 | #endif |
| 820 | return(i); |
| 821 | } |
| 822 | |
| 823 | static inline MagickOffsetType WritePixelCacheRegion(CacheInfo *cache_info, |
| 824 | const MagickOffsetType offset,const MagickSizeType length, |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 825 | const unsigned char *restrict buffer) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 826 | { |
| 827 | register MagickOffsetType |
| 828 | i; |
| 829 | |
| 830 | ssize_t |
| 831 | count; |
| 832 | |
| 833 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 834 | LockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 835 | cache_info->timestamp=time(0); |
| 836 | if (MagickSeek(cache_info->file,offset,SEEK_SET) < 0) |
| 837 | { |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 838 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 839 | return((MagickOffsetType) -1); |
| 840 | } |
| 841 | #endif |
| 842 | count=0; |
| 843 | for (i=0; i < (MagickOffsetType) length; i+=count) |
| 844 | { |
| 845 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
| 846 | count=write(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 847 | (MagickSizeType) SSIZE_MAX)); |
| 848 | #else |
| 849 | count=pwrite(cache_info->file,buffer+i,(size_t) MagickMin(length-i, |
| 850 | (MagickSizeType) SSIZE_MAX),(off_t) (offset+i)); |
| 851 | #endif |
| 852 | if (count > 0) |
| 853 | continue; |
| 854 | count=0; |
| 855 | if (errno != EINTR) |
| 856 | { |
| 857 | i=(-1); |
| 858 | break; |
| 859 | } |
| 860 | } |
| 861 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 862 | UnlockSemaphoreInfo(cache_info->disk_semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 863 | #endif |
| 864 | return(i); |
| 865 | } |
| 866 | |
| 867 | static MagickBooleanType CloneDiskToDiskPixelCache(CacheInfo *clone_info, |
| 868 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 869 | { |
| 870 | MagickOffsetType |
| 871 | count, |
| 872 | offset, |
| 873 | source_offset; |
| 874 | |
| 875 | MagickSizeType |
| 876 | length; |
| 877 | |
| 878 | register long |
| 879 | y; |
| 880 | |
| 881 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 882 | *restrict pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 883 | |
| 884 | unsigned long |
| 885 | columns, |
| 886 | rows; |
| 887 | |
| 888 | if (cache_info->debug != MagickFalse) |
| 889 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"disk => disk"); |
| 890 | if (OpenPixelCacheOnDisk(clone_info,IOMode) == MagickFalse) |
| 891 | { |
| 892 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 893 | clone_info->cache_filename); |
| 894 | return(MagickFalse); |
| 895 | } |
| 896 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 897 | { |
| 898 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 899 | cache_info->cache_filename); |
| 900 | return(MagickFalse); |
| 901 | } |
| 902 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 903 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 904 | if ((clone_info->active_index_channel != MagickFalse) && |
| 905 | (cache_info->active_index_channel != MagickFalse)) |
| 906 | { |
| 907 | register IndexPacket |
| 908 | *indexes; |
| 909 | |
| 910 | /* |
| 911 | Clone cache indexes. |
| 912 | */ |
| 913 | length=MagickMax(clone_info->columns,cache_info->columns)* |
| 914 | sizeof(*indexes); |
| 915 | indexes=(IndexPacket *) AcquireMagickMemory((size_t) length); |
| 916 | if (indexes == (IndexPacket *) NULL) |
| 917 | { |
| 918 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 919 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 920 | return(MagickFalse); |
| 921 | } |
| 922 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 923 | length=columns*sizeof(*indexes); |
| 924 | source_offset=(MagickOffsetType) cache_info->columns*cache_info->rows* |
| 925 | sizeof(*pixels)+cache_info->columns*rows*sizeof(*indexes); |
| 926 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 927 | sizeof(*pixels)+clone_info->columns*rows*sizeof(*indexes); |
| 928 | for (y=0; y < (long) rows; y++) |
| 929 | { |
| 930 | source_offset-=cache_info->columns*sizeof(*indexes); |
| 931 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+source_offset, |
| 932 | length,(unsigned char *) indexes); |
| 933 | if ((MagickSizeType) count != length) |
| 934 | break; |
| 935 | offset-=clone_info->columns*sizeof(*indexes); |
| 936 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 937 | (unsigned char *) indexes); |
| 938 | if ((MagickSizeType) count != length) |
| 939 | break; |
| 940 | } |
| 941 | if (y < (long) rows) |
| 942 | { |
| 943 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 944 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 945 | cache_info->cache_filename); |
| 946 | return(MagickFalse); |
| 947 | } |
| 948 | if (clone_info->columns > cache_info->columns) |
| 949 | { |
| 950 | length=(clone_info->columns-cache_info->columns)*sizeof(*indexes); |
| 951 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 952 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 953 | sizeof(*pixels)+(clone_info->columns*rows+columns)*sizeof(*indexes); |
| 954 | for (y=0; y < (long) rows; y++) |
| 955 | { |
| 956 | offset-=clone_info->columns*sizeof(*indexes); |
| 957 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset, |
| 958 | length,(unsigned char *) indexes); |
| 959 | if ((MagickSizeType) count != length) |
| 960 | break; |
| 961 | } |
| 962 | if (y < (long) rows) |
| 963 | { |
| 964 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 965 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 966 | cache_info->cache_filename); |
| 967 | return(MagickFalse); |
| 968 | } |
| 969 | } |
| 970 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 971 | } |
| 972 | /* |
| 973 | Clone cache pixels. |
| 974 | */ |
| 975 | length=MagickMax(clone_info->columns,cache_info->columns)*sizeof(*pixels); |
| 976 | pixels=(PixelPacket *) AcquireMagickMemory((size_t) length); |
| 977 | if (pixels == (PixelPacket *) NULL) |
| 978 | { |
| 979 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 980 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 981 | return(MagickFalse); |
| 982 | } |
| 983 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 984 | length=columns*sizeof(*pixels); |
| 985 | source_offset=(MagickOffsetType) cache_info->columns*rows*sizeof(*pixels); |
| 986 | offset=(MagickOffsetType) clone_info->columns*rows*sizeof(*pixels); |
| 987 | for (y=0; y < (long) rows; y++) |
| 988 | { |
| 989 | source_offset-=cache_info->columns*sizeof(*pixels); |
| 990 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+source_offset, |
| 991 | length,(unsigned char *) pixels); |
| 992 | if ((MagickSizeType) count != length) |
| 993 | break; |
| 994 | offset-=clone_info->columns*sizeof(*pixels); |
| 995 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 996 | (unsigned char *) pixels); |
| 997 | if ((MagickSizeType) count != length) |
| 998 | break; |
| 999 | } |
| 1000 | if (y < (long) rows) |
| 1001 | { |
| 1002 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1003 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1004 | cache_info->cache_filename); |
| 1005 | return(MagickFalse); |
| 1006 | } |
| 1007 | if (clone_info->columns > cache_info->columns) |
| 1008 | { |
| 1009 | offset=(MagickOffsetType) (clone_info->columns*rows+columns)* |
| 1010 | sizeof(*pixels); |
| 1011 | length=(clone_info->columns-cache_info->columns)*sizeof(*pixels); |
| 1012 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 1013 | for (y=0; y < (long) rows; y++) |
| 1014 | { |
| 1015 | offset-=clone_info->columns*sizeof(*pixels); |
| 1016 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 1017 | (unsigned char *) pixels); |
| 1018 | if ((MagickSizeType) count != length) |
| 1019 | break; |
| 1020 | } |
| 1021 | if (y < (long) rows) |
| 1022 | { |
| 1023 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1024 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1025 | cache_info->cache_filename); |
| 1026 | return(MagickFalse); |
| 1027 | } |
| 1028 | } |
| 1029 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1030 | return(MagickTrue); |
| 1031 | } |
| 1032 | |
| 1033 | static MagickBooleanType CloneDiskToMemoryPixelCache(CacheInfo *clone_info, |
| 1034 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 1035 | { |
| 1036 | MagickOffsetType |
| 1037 | count, |
| 1038 | offset; |
| 1039 | |
| 1040 | MagickSizeType |
| 1041 | length; |
| 1042 | |
| 1043 | register long |
| 1044 | y; |
| 1045 | |
| 1046 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1047 | *restrict pixels, |
| 1048 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1049 | |
| 1050 | unsigned long |
| 1051 | columns, |
| 1052 | rows; |
| 1053 | |
| 1054 | if (cache_info->debug != MagickFalse) |
| 1055 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"disk => memory"); |
| 1056 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 1057 | { |
| 1058 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 1059 | cache_info->cache_filename); |
| 1060 | return(MagickFalse); |
| 1061 | } |
| 1062 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 1063 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 1064 | if ((clone_info->active_index_channel != MagickFalse) && |
| 1065 | (cache_info->active_index_channel != MagickFalse)) |
| 1066 | { |
| 1067 | register IndexPacket |
| 1068 | *indexes, |
| 1069 | *q; |
| 1070 | |
| 1071 | /* |
| 1072 | Clone cache indexes. |
| 1073 | */ |
| 1074 | length=MagickMax(clone_info->columns,cache_info->columns)* |
| 1075 | sizeof(*indexes); |
| 1076 | indexes=(IndexPacket *) AcquireMagickMemory((size_t) length); |
| 1077 | if (indexes == (IndexPacket *) NULL) |
| 1078 | { |
| 1079 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 1080 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 1081 | return(MagickFalse); |
| 1082 | } |
| 1083 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 1084 | length=columns*sizeof(IndexPacket); |
| 1085 | offset=(MagickOffsetType) cache_info->columns*cache_info->rows* |
| 1086 | sizeof(*pixels)+cache_info->columns*rows*sizeof(*indexes); |
| 1087 | q=clone_info->indexes+clone_info->columns*rows; |
| 1088 | for (y=0; y < (long) rows; y++) |
| 1089 | { |
| 1090 | offset-=cache_info->columns*sizeof(IndexPacket); |
| 1091 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+offset, |
| 1092 | length,(unsigned char *) indexes); |
| 1093 | if ((MagickSizeType) count != length) |
| 1094 | break; |
| 1095 | q-=clone_info->columns; |
| 1096 | (void) CopyMagickMemory(q,indexes,(size_t) length); |
| 1097 | if ((MagickSizeType) count != length) |
| 1098 | break; |
| 1099 | } |
| 1100 | if (y < (long) rows) |
| 1101 | { |
| 1102 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1103 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1104 | cache_info->cache_filename); |
| 1105 | return(MagickFalse); |
| 1106 | } |
| 1107 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1108 | } |
| 1109 | /* |
| 1110 | Clone cache pixels. |
| 1111 | */ |
| 1112 | length=MagickMax(clone_info->columns,cache_info->columns)*sizeof(*pixels); |
| 1113 | pixels=(PixelPacket *) AcquireMagickMemory((size_t) length); |
| 1114 | if (pixels == (PixelPacket *) NULL) |
| 1115 | { |
| 1116 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 1117 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 1118 | return(MagickFalse); |
| 1119 | } |
| 1120 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 1121 | length=columns*sizeof(*pixels); |
| 1122 | offset=(MagickOffsetType) cache_info->columns*rows*sizeof(*pixels); |
| 1123 | q=clone_info->pixels+clone_info->columns*rows; |
| 1124 | for (y=0; y < (long) rows; y++) |
| 1125 | { |
| 1126 | offset-=cache_info->columns*sizeof(*pixels); |
| 1127 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+offset,length, |
| 1128 | (unsigned char *) pixels); |
| 1129 | if ((MagickSizeType) count != length) |
| 1130 | break; |
| 1131 | q-=clone_info->columns; |
| 1132 | (void) CopyMagickMemory(q,pixels,(size_t) length); |
| 1133 | } |
| 1134 | if (y < (long) rows) |
| 1135 | { |
| 1136 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1137 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1138 | cache_info->cache_filename); |
| 1139 | return(MagickFalse); |
| 1140 | } |
| 1141 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1142 | return(MagickTrue); |
| 1143 | } |
| 1144 | |
| 1145 | static MagickBooleanType CloneMemoryToDiskPixelCache(CacheInfo *clone_info, |
| 1146 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 1147 | { |
| 1148 | MagickOffsetType |
| 1149 | count, |
| 1150 | offset; |
| 1151 | |
| 1152 | MagickSizeType |
| 1153 | length; |
| 1154 | |
| 1155 | register long |
| 1156 | y; |
| 1157 | |
| 1158 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1159 | *restrict p, |
| 1160 | *restrict pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1161 | |
| 1162 | unsigned long |
| 1163 | columns, |
| 1164 | rows; |
| 1165 | |
| 1166 | if (cache_info->debug != MagickFalse) |
| 1167 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"memory => disk"); |
| 1168 | if (OpenPixelCacheOnDisk(clone_info,IOMode) == MagickFalse) |
| 1169 | { |
| 1170 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 1171 | clone_info->cache_filename); |
| 1172 | return(MagickFalse); |
| 1173 | } |
| 1174 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 1175 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 1176 | if ((clone_info->active_index_channel != MagickFalse) && |
| 1177 | (cache_info->active_index_channel != MagickFalse)) |
| 1178 | { |
| 1179 | register IndexPacket |
| 1180 | *p, |
| 1181 | *indexes; |
| 1182 | |
| 1183 | /* |
| 1184 | Clone cache indexes. |
| 1185 | */ |
| 1186 | length=MagickMax(clone_info->columns,cache_info->columns)* |
| 1187 | sizeof(*indexes); |
| 1188 | indexes=(IndexPacket *) AcquireMagickMemory((size_t) length); |
| 1189 | if (indexes == (IndexPacket *) NULL) |
| 1190 | { |
| 1191 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 1192 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 1193 | return(MagickFalse); |
| 1194 | } |
| 1195 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 1196 | length=columns*sizeof(*indexes); |
| 1197 | p=cache_info->indexes+cache_info->columns*rows; |
| 1198 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 1199 | sizeof(*pixels)+clone_info->columns*rows*sizeof(*indexes); |
| 1200 | for (y=0; y < (long) rows; y++) |
| 1201 | { |
| 1202 | p-=cache_info->columns; |
| 1203 | (void) CopyMagickMemory(indexes,p,(size_t) length); |
| 1204 | offset-=clone_info->columns*sizeof(*indexes); |
| 1205 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 1206 | (unsigned char *) indexes); |
| 1207 | if ((MagickSizeType) count != length) |
| 1208 | break; |
| 1209 | } |
| 1210 | if (y < (long) rows) |
| 1211 | { |
| 1212 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1213 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1214 | cache_info->cache_filename); |
| 1215 | return(MagickFalse); |
| 1216 | } |
| 1217 | if (clone_info->columns > cache_info->columns) |
| 1218 | { |
| 1219 | length=(clone_info->columns-cache_info->columns)*sizeof(*indexes); |
| 1220 | (void) ResetMagickMemory(indexes,0,(size_t) length); |
| 1221 | offset=(MagickOffsetType) clone_info->columns*clone_info->rows* |
| 1222 | sizeof(*pixels)+(clone_info->columns*rows+columns)*sizeof(*indexes); |
| 1223 | for (y=0; y < (long) rows; y++) |
| 1224 | { |
| 1225 | offset-=clone_info->columns*sizeof(*indexes); |
| 1226 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset, |
| 1227 | length,(unsigned char *) indexes); |
| 1228 | if ((MagickSizeType) count != length) |
| 1229 | break; |
| 1230 | } |
| 1231 | if (y < (long) rows) |
| 1232 | { |
| 1233 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1234 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1235 | cache_info->cache_filename); |
| 1236 | return(MagickFalse); |
| 1237 | } |
| 1238 | } |
| 1239 | indexes=(IndexPacket *) RelinquishMagickMemory(indexes); |
| 1240 | } |
| 1241 | /* |
| 1242 | Clone cache pixels. |
| 1243 | */ |
| 1244 | length=MagickMax(clone_info->columns,cache_info->columns)*sizeof(*pixels); |
| 1245 | pixels=(PixelPacket *) AcquireMagickMemory((size_t) length); |
| 1246 | if (pixels == (PixelPacket *) NULL) |
| 1247 | { |
| 1248 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 1249 | "MemoryAllocationFailed","`%s'",cache_info->cache_filename); |
| 1250 | return(MagickFalse); |
| 1251 | } |
| 1252 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 1253 | length=columns*sizeof(*pixels); |
| 1254 | p=cache_info->pixels+cache_info->columns*rows; |
| 1255 | offset=(MagickOffsetType) clone_info->columns*rows*sizeof(*pixels); |
| 1256 | for (y=0; y < (long) rows; y++) |
| 1257 | { |
| 1258 | p-=cache_info->columns; |
| 1259 | (void) CopyMagickMemory(pixels,p,(size_t) length); |
| 1260 | offset-=clone_info->columns*sizeof(*pixels); |
| 1261 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 1262 | (unsigned char *) pixels); |
| 1263 | if ((MagickSizeType) count != length) |
| 1264 | break; |
| 1265 | } |
| 1266 | if (y < (long) rows) |
| 1267 | { |
| 1268 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1269 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1270 | cache_info->cache_filename); |
| 1271 | return(MagickFalse); |
| 1272 | } |
| 1273 | if (clone_info->columns > cache_info->columns) |
| 1274 | { |
| 1275 | offset=(MagickOffsetType) (clone_info->columns*rows+columns)* |
| 1276 | sizeof(*pixels); |
| 1277 | length=(clone_info->columns-cache_info->columns)*sizeof(*pixels); |
| 1278 | (void) ResetMagickMemory(pixels,0,(size_t) length); |
| 1279 | for (y=0; y < (long) rows; y++) |
| 1280 | { |
| 1281 | offset-=clone_info->columns*sizeof(*pixels); |
| 1282 | count=WritePixelCacheRegion(clone_info,clone_info->offset+offset,length, |
| 1283 | (unsigned char *) pixels); |
| 1284 | if ((MagickSizeType) count != length) |
| 1285 | break; |
| 1286 | } |
| 1287 | if (y < (long) rows) |
| 1288 | { |
| 1289 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1290 | ThrowFileException(exception,CacheError,"UnableToCloneCache", |
| 1291 | cache_info->cache_filename); |
| 1292 | return(MagickFalse); |
| 1293 | } |
| 1294 | } |
| 1295 | pixels=(PixelPacket *) RelinquishMagickMemory(pixels); |
| 1296 | return(MagickTrue); |
| 1297 | } |
| 1298 | |
| 1299 | static MagickBooleanType CloneMemoryToMemoryPixelCache(CacheInfo *clone_info, |
| 1300 | CacheInfo *cache_info,ExceptionInfo *magick_unused(exception)) |
| 1301 | { |
| 1302 | register long |
| 1303 | y; |
| 1304 | |
| 1305 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1306 | *restrict pixels, |
| 1307 | *restrict source_pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1308 | |
| 1309 | size_t |
| 1310 | length; |
| 1311 | |
| 1312 | unsigned long |
| 1313 | columns, |
| 1314 | rows; |
| 1315 | |
| 1316 | if (cache_info->debug != MagickFalse) |
| 1317 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"memory => memory"); |
| 1318 | columns=(unsigned long) MagickMin(clone_info->columns,cache_info->columns); |
| 1319 | rows=(unsigned long) MagickMin(clone_info->rows,cache_info->rows); |
| 1320 | if ((clone_info->active_index_channel != MagickFalse) && |
| 1321 | (cache_info->active_index_channel != MagickFalse)) |
| 1322 | { |
| 1323 | register IndexPacket |
| 1324 | *indexes, |
| 1325 | *source_indexes; |
| 1326 | |
| 1327 | /* |
| 1328 | Clone cache indexes. |
| 1329 | */ |
| 1330 | length=columns*sizeof(*indexes); |
| 1331 | if (clone_info->columns == cache_info->columns) |
| 1332 | (void) CopyMagickMemory(clone_info->indexes,cache_info->indexes, |
| 1333 | length*rows); |
| 1334 | else |
| 1335 | { |
| 1336 | source_indexes=cache_info->indexes+cache_info->columns*rows; |
| 1337 | indexes=clone_info->indexes+clone_info->columns*rows; |
| 1338 | for (y=0; y < (long) rows; y++) |
| 1339 | { |
| 1340 | source_indexes-=cache_info->columns; |
| 1341 | indexes-=clone_info->columns; |
| 1342 | (void) CopyMagickMemory(indexes,source_indexes,length); |
| 1343 | } |
| 1344 | if (clone_info->columns > cache_info->columns) |
| 1345 | { |
| 1346 | length=(clone_info->columns-cache_info->columns)* |
| 1347 | sizeof(*indexes); |
| 1348 | indexes=clone_info->indexes+clone_info->columns*rows+ |
| 1349 | cache_info->columns; |
| 1350 | for (y=0; y < (long) rows; y++) |
| 1351 | { |
| 1352 | indexes-=clone_info->columns; |
| 1353 | (void) ResetMagickMemory(indexes,0,length); |
| 1354 | } |
| 1355 | } |
| 1356 | } |
| 1357 | } |
| 1358 | /* |
| 1359 | Clone cache pixels. |
| 1360 | */ |
| 1361 | length=columns*sizeof(*pixels); |
| 1362 | if (clone_info->columns == cache_info->columns) |
| 1363 | (void) CopyMagickMemory(clone_info->pixels,cache_info->pixels,length*rows); |
| 1364 | else |
| 1365 | { |
| 1366 | source_pixels=cache_info->pixels+cache_info->columns*rows; |
| 1367 | pixels=clone_info->pixels+clone_info->columns*rows; |
| 1368 | for (y=0; y < (long) rows; y++) |
| 1369 | { |
| 1370 | source_pixels-=cache_info->columns; |
| 1371 | pixels-=clone_info->columns; |
| 1372 | (void) CopyMagickMemory(pixels,source_pixels,length); |
| 1373 | } |
| 1374 | if (clone_info->columns > cache_info->columns) |
| 1375 | { |
| 1376 | length=(clone_info->columns-cache_info->columns)*sizeof(*pixels); |
| 1377 | pixels=clone_info->pixels+clone_info->columns*rows+ |
| 1378 | cache_info->columns; |
| 1379 | for (y=0; y < (long) rows; y++) |
| 1380 | { |
| 1381 | pixels-=clone_info->columns; |
| 1382 | (void) ResetMagickMemory(pixels,0,length); |
| 1383 | } |
| 1384 | } |
| 1385 | } |
| 1386 | return(MagickTrue); |
| 1387 | } |
| 1388 | |
| 1389 | static MagickBooleanType ClonePixelCachePixels(CacheInfo *clone_info, |
| 1390 | CacheInfo *cache_info,ExceptionInfo *exception) |
| 1391 | { |
| 1392 | if ((clone_info->type != DiskCache) && (cache_info->type != DiskCache)) |
| 1393 | return(CloneMemoryToMemoryPixelCache(clone_info,cache_info,exception)); |
| 1394 | if ((clone_info->type == DiskCache) && (cache_info->type == DiskCache)) |
| 1395 | return(CloneDiskToDiskPixelCache(clone_info,cache_info,exception)); |
| 1396 | if (cache_info->type == DiskCache) |
| 1397 | return(CloneDiskToMemoryPixelCache(clone_info,cache_info,exception)); |
| 1398 | return(CloneMemoryToDiskPixelCache(clone_info,cache_info,exception)); |
| 1399 | } |
| 1400 | |
| 1401 | /* |
| 1402 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1403 | % % |
| 1404 | % % |
| 1405 | % % |
| 1406 | + C l o n e P i x e l C a c h e M e t h o d s % |
| 1407 | % % |
| 1408 | % % |
| 1409 | % % |
| 1410 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1411 | % |
| 1412 | % ClonePixelCacheMethods() clones the pixel cache methods from one cache to |
| 1413 | % another. |
| 1414 | % |
| 1415 | % The format of the ClonePixelCacheMethods() method is: |
| 1416 | % |
| 1417 | % void ClonePixelCacheMethods(Cache clone,const Cache cache) |
| 1418 | % |
| 1419 | % A description of each parameter follows: |
| 1420 | % |
| 1421 | % o clone: Specifies a pointer to a Cache structure. |
| 1422 | % |
| 1423 | % o cache: the pixel cache. |
| 1424 | % |
| 1425 | */ |
| 1426 | MagickExport void ClonePixelCacheMethods(Cache clone,const Cache cache) |
| 1427 | { |
| 1428 | CacheInfo |
| 1429 | *cache_info, |
| 1430 | *source_info; |
| 1431 | |
| 1432 | assert(clone != (Cache) NULL); |
| 1433 | source_info=(CacheInfo *) clone; |
| 1434 | assert(source_info->signature == MagickSignature); |
| 1435 | if (source_info->debug != MagickFalse) |
| 1436 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 1437 | source_info->filename); |
| 1438 | assert(cache != (Cache) NULL); |
| 1439 | cache_info=(CacheInfo *) cache; |
| 1440 | assert(cache_info->signature == MagickSignature); |
| 1441 | source_info->methods=cache_info->methods; |
| 1442 | } |
| 1443 | |
| 1444 | /* |
| 1445 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1446 | % % |
| 1447 | % % |
| 1448 | % % |
| 1449 | + D e s t r o y I m a g e P i x e l C a c h e % |
| 1450 | % % |
| 1451 | % % |
| 1452 | % % |
| 1453 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1454 | % |
| 1455 | % DestroyImagePixelCache() deallocates memory associated with the pixel cache. |
| 1456 | % |
| 1457 | % The format of the DestroyImagePixelCache() method is: |
| 1458 | % |
| 1459 | % void DestroyImagePixelCache(Image *image) |
| 1460 | % |
| 1461 | % A description of each parameter follows: |
| 1462 | % |
| 1463 | % o image: the image. |
| 1464 | % |
| 1465 | */ |
| 1466 | static void DestroyImagePixelCache(Image *image) |
| 1467 | { |
| 1468 | assert(image != (Image *) NULL); |
| 1469 | assert(image->signature == MagickSignature); |
| 1470 | if (image->debug != MagickFalse) |
| 1471 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1472 | if (image->cache == (void *) NULL) |
| 1473 | return; |
| 1474 | image->cache=DestroyPixelCache(image->cache); |
| 1475 | } |
| 1476 | |
| 1477 | /* |
| 1478 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1479 | % % |
| 1480 | % % |
| 1481 | % % |
| 1482 | + D e s t r o y I m a g e P i x e l s % |
| 1483 | % % |
| 1484 | % % |
| 1485 | % % |
| 1486 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1487 | % |
| 1488 | % DestroyImagePixels() deallocates memory associated with the pixel cache. |
| 1489 | % |
| 1490 | % The format of the DestroyImagePixels() method is: |
| 1491 | % |
| 1492 | % void DestroyImagePixels(Image *image) |
| 1493 | % |
| 1494 | % A description of each parameter follows: |
| 1495 | % |
| 1496 | % o image: the image. |
| 1497 | % |
| 1498 | */ |
| 1499 | MagickExport void DestroyImagePixels(Image *image) |
| 1500 | { |
| 1501 | CacheInfo |
| 1502 | *cache_info; |
| 1503 | |
| 1504 | assert(image != (const Image *) NULL); |
| 1505 | assert(image->signature == MagickSignature); |
| 1506 | if (image->debug != MagickFalse) |
| 1507 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1508 | assert(image->cache != (Cache) NULL); |
| 1509 | cache_info=(CacheInfo *) image->cache; |
| 1510 | assert(cache_info->signature == MagickSignature); |
| 1511 | if (cache_info->methods.destroy_pixel_handler == (DestroyPixelHandler) NULL) |
| 1512 | return; |
| 1513 | cache_info->methods.destroy_pixel_handler(image); |
| 1514 | } |
| 1515 | |
| 1516 | /* |
| 1517 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1518 | % % |
| 1519 | % % |
| 1520 | % % |
| 1521 | + D e s t r o y P i x e l C a c h e % |
| 1522 | % % |
| 1523 | % % |
| 1524 | % % |
| 1525 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1526 | % |
| 1527 | % DestroyPixelCache() deallocates memory associated with the pixel cache. |
| 1528 | % |
| 1529 | % The format of the DestroyPixelCache() method is: |
| 1530 | % |
| 1531 | % Cache DestroyPixelCache(Cache cache) |
| 1532 | % |
| 1533 | % A description of each parameter follows: |
| 1534 | % |
| 1535 | % o cache: the pixel cache. |
| 1536 | % |
| 1537 | */ |
| 1538 | |
| 1539 | static inline void RelinquishPixelCachePixels(CacheInfo *cache_info) |
| 1540 | { |
| 1541 | switch (cache_info->type) |
| 1542 | { |
| 1543 | case MemoryCache: |
| 1544 | { |
| 1545 | if (cache_info->mapped == MagickFalse) |
| 1546 | cache_info->pixels=(PixelPacket *) RelinquishMagickMemory( |
| 1547 | cache_info->pixels); |
| 1548 | else |
| 1549 | cache_info->pixels=(PixelPacket *) UnmapBlob(cache_info->pixels, |
| 1550 | (size_t) cache_info->length); |
| 1551 | RelinquishMagickResource(MemoryResource,cache_info->length); |
| 1552 | break; |
| 1553 | } |
| 1554 | case MapCache: |
| 1555 | { |
| 1556 | cache_info->pixels=(PixelPacket *) UnmapBlob(cache_info->pixels,(size_t) |
| 1557 | cache_info->length); |
| 1558 | RelinquishMagickResource(MapResource,cache_info->length); |
| 1559 | } |
| 1560 | case DiskCache: |
| 1561 | { |
| 1562 | if (cache_info->file != -1) |
| 1563 | (void) ClosePixelCacheOnDisk(cache_info); |
| 1564 | RelinquishMagickResource(DiskResource,cache_info->length); |
| 1565 | break; |
| 1566 | } |
| 1567 | default: |
| 1568 | break; |
| 1569 | } |
| 1570 | cache_info->type=UndefinedCache; |
| 1571 | cache_info->mapped=MagickFalse; |
| 1572 | cache_info->indexes=(IndexPacket *) NULL; |
| 1573 | } |
| 1574 | |
| 1575 | MagickExport Cache DestroyPixelCache(Cache cache) |
| 1576 | { |
| 1577 | CacheInfo |
| 1578 | *cache_info; |
| 1579 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1580 | assert(cache != (Cache) NULL); |
| 1581 | cache_info=(CacheInfo *) cache; |
| 1582 | assert(cache_info->signature == MagickSignature); |
| 1583 | if (cache_info->debug != MagickFalse) |
| 1584 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 1585 | cache_info->filename); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 1586 | LockSemaphoreInfo(cache_info->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1587 | cache_info->reference_count--; |
| 1588 | if (cache_info->reference_count != 0) |
| 1589 | { |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 1590 | UnlockSemaphoreInfo(cache_info->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1591 | return((Cache) NULL); |
| 1592 | } |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 1593 | UnlockSemaphoreInfo(cache_info->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1594 | if (cache_resources != (SplayTreeInfo *) NULL) |
| 1595 | (void) DeleteNodeByValueFromSplayTree(cache_resources,cache_info); |
cristy | 5b8de73 | 2009-09-10 23:50:40 +0000 | [diff] [blame] | 1596 | if (cache_info->debug != MagickFalse) |
| 1597 | { |
| 1598 | char |
| 1599 | message[MaxTextExtent]; |
| 1600 | |
| 1601 | (void) FormatMagickString(message,MaxTextExtent,"destroy %s", |
| 1602 | cache_info->filename); |
| 1603 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s",message); |
| 1604 | } |
cristy | c2e1bdd | 2009-09-10 23:43:34 +0000 | [diff] [blame] | 1605 | if ((cache_info->mode == ReadMode) || ((cache_info->type != MapCache) && |
| 1606 | (cache_info->type != DiskCache))) |
| 1607 | RelinquishPixelCachePixels(cache_info); |
| 1608 | else |
| 1609 | { |
| 1610 | RelinquishPixelCachePixels(cache_info); |
| 1611 | (void) RelinquishUniqueFileResource(cache_info->cache_filename); |
| 1612 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1613 | *cache_info->cache_filename='\0'; |
| 1614 | if (cache_info->nexus_info != (NexusInfo **) NULL) |
| 1615 | cache_info->nexus_info=DestroyPixelCacheNexus(cache_info->nexus_info, |
| 1616 | cache_info->number_threads); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1617 | if (cache_info->random_info != (RandomInfo *) NULL) |
| 1618 | cache_info->random_info=DestroyRandomInfo(cache_info->random_info); |
| 1619 | cache_info->signature=(~MagickSignature); |
| 1620 | if (cache_info->disk_semaphore != (SemaphoreInfo *) NULL) |
| 1621 | DestroySemaphoreInfo(&cache_info->disk_semaphore); |
| 1622 | if (cache_info->semaphore != (SemaphoreInfo *) NULL) |
| 1623 | DestroySemaphoreInfo(&cache_info->semaphore); |
| 1624 | cache_info=(CacheInfo *) RelinquishAlignedMemory(cache_info); |
| 1625 | cache=(Cache) NULL; |
| 1626 | return(cache); |
| 1627 | } |
| 1628 | |
| 1629 | /* |
| 1630 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1631 | % % |
| 1632 | % % |
| 1633 | % % |
| 1634 | + D e s t r o y P i x e l C a c h e N e x u s % |
| 1635 | % % |
| 1636 | % % |
| 1637 | % % |
| 1638 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1639 | % |
| 1640 | % DestroyPixelCacheNexus() destroys a pixel cache nexus. |
| 1641 | % |
| 1642 | % The format of the DestroyPixelCacheNexus() method is: |
| 1643 | % |
| 1644 | % NexusInfo **DestroyPixelCacheNexus(NexusInfo *nexus_info, |
| 1645 | % const unsigned long number_threads) |
| 1646 | % |
| 1647 | % A description of each parameter follows: |
| 1648 | % |
| 1649 | % o nexus_info: the nexus to destroy. |
| 1650 | % |
| 1651 | % o number_threads: the number of nexus threads. |
| 1652 | % |
| 1653 | */ |
| 1654 | |
| 1655 | static inline void RelinquishCacheNexusPixels(NexusInfo *nexus_info) |
| 1656 | { |
| 1657 | if (nexus_info->mapped == MagickFalse) |
| 1658 | (void) RelinquishMagickMemory(nexus_info->cache); |
| 1659 | else |
| 1660 | (void) UnmapBlob(nexus_info->cache,(size_t) nexus_info->length); |
| 1661 | nexus_info->cache=(PixelPacket *) NULL; |
| 1662 | nexus_info->pixels=(PixelPacket *) NULL; |
| 1663 | nexus_info->indexes=(IndexPacket *) NULL; |
| 1664 | nexus_info->length=0; |
| 1665 | nexus_info->mapped=MagickFalse; |
| 1666 | } |
| 1667 | |
| 1668 | MagickExport NexusInfo **DestroyPixelCacheNexus(NexusInfo **nexus_info, |
| 1669 | const unsigned long number_threads) |
| 1670 | { |
| 1671 | register long |
| 1672 | i; |
| 1673 | |
| 1674 | assert(nexus_info != (NexusInfo **) NULL); |
| 1675 | for (i=0; i < (long) number_threads; i++) |
| 1676 | { |
| 1677 | if (nexus_info[i]->cache != (PixelPacket *) NULL) |
| 1678 | RelinquishCacheNexusPixels(nexus_info[i]); |
| 1679 | nexus_info[i]->signature=(~MagickSignature); |
| 1680 | nexus_info[i]=(NexusInfo *) RelinquishAlignedMemory(nexus_info[i]); |
| 1681 | } |
| 1682 | nexus_info=(NexusInfo **) RelinquishAlignedMemory(nexus_info); |
| 1683 | return(nexus_info); |
| 1684 | } |
| 1685 | |
| 1686 | /* |
| 1687 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1688 | % % |
| 1689 | % % |
| 1690 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1691 | + 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 % |
| 1692 | % % |
| 1693 | % % |
| 1694 | % % |
| 1695 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1696 | % |
| 1697 | % GetAuthenticIndexesFromCache() returns the indexes associated with the last |
| 1698 | % call to QueueAuthenticPixelsCache() or GetAuthenticPixelsCache(). |
| 1699 | % |
| 1700 | % The format of the GetAuthenticIndexesFromCache() method is: |
| 1701 | % |
| 1702 | % IndexPacket *GetAuthenticIndexesFromCache(const Image *image) |
| 1703 | % |
| 1704 | % A description of each parameter follows: |
| 1705 | % |
| 1706 | % o image: the image. |
| 1707 | % |
| 1708 | */ |
| 1709 | static IndexPacket *GetAuthenticIndexesFromCache(const Image *image) |
| 1710 | { |
| 1711 | CacheInfo |
| 1712 | *cache_info; |
| 1713 | |
| 1714 | IndexPacket |
| 1715 | *indexes; |
| 1716 | |
| 1717 | long |
| 1718 | id; |
| 1719 | |
| 1720 | if (image->debug != MagickFalse) |
| 1721 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1722 | cache_info=(CacheInfo *) image->cache; |
| 1723 | id=GetOpenMPThreadId(); |
| 1724 | assert(id < (long) cache_info->number_threads); |
| 1725 | indexes=GetPixelCacheNexusIndexes(image->cache,cache_info->nexus_info[id]); |
| 1726 | return(indexes); |
| 1727 | } |
| 1728 | |
| 1729 | /* |
| 1730 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1731 | % % |
| 1732 | % % |
| 1733 | % % |
| 1734 | % G e t A u t h e n t i c I n d e x Q u e u e % |
| 1735 | % % |
| 1736 | % % |
| 1737 | % % |
| 1738 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1739 | % |
| 1740 | % GetAuthenticIndexQueue() returns the authentic black channel or the colormap |
| 1741 | % indexes associated with the last call to QueueAuthenticPixels() or |
| 1742 | % GetVirtualPixels(). NULL is returned if the black channel or colormap |
| 1743 | % indexes are not available. |
| 1744 | % |
| 1745 | % The format of the GetAuthenticIndexQueue() method is: |
| 1746 | % |
| 1747 | % IndexPacket *GetAuthenticIndexQueue(const Image *image) |
| 1748 | % |
| 1749 | % A description of each parameter follows: |
| 1750 | % |
| 1751 | % o image: the image. |
| 1752 | % |
| 1753 | */ |
| 1754 | MagickExport IndexPacket *GetAuthenticIndexQueue(const Image *image) |
| 1755 | { |
| 1756 | CacheInfo |
| 1757 | *cache_info; |
| 1758 | |
| 1759 | assert(image != (const Image *) NULL); |
| 1760 | assert(image->signature == MagickSignature); |
| 1761 | if (image->debug != MagickFalse) |
| 1762 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1763 | assert(image->cache != (Cache) NULL); |
| 1764 | cache_info=(CacheInfo *) image->cache; |
| 1765 | assert(cache_info->signature == MagickSignature); |
| 1766 | if (cache_info->methods.get_authentic_indexes_from_handler == |
| 1767 | (GetAuthenticIndexesFromHandler) NULL) |
| 1768 | return((IndexPacket *) NULL); |
| 1769 | return(cache_info->methods.get_authentic_indexes_from_handler(image)); |
| 1770 | } |
| 1771 | |
| 1772 | /* |
| 1773 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1774 | % % |
| 1775 | % % |
| 1776 | % % |
| 1777 | + 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 % |
| 1778 | % % |
| 1779 | % % |
| 1780 | % % |
| 1781 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1782 | % |
| 1783 | % GetAuthenticPixelCacheNexus() gets authentic pixels from the in-memory or |
| 1784 | % disk pixel cache as defined by the geometry parameters. A pointer to the |
| 1785 | % pixels is returned if the pixels are transferred, otherwise a NULL is |
| 1786 | % returned. |
| 1787 | % |
| 1788 | % The format of the GetAuthenticPixelCacheNexus() method is: |
| 1789 | % |
| 1790 | % PixelPacket *GetAuthenticPixelCacheNexus(Image *image,const long x, |
| 1791 | % const long y,const unsigned long columns,const unsigned long rows, |
| 1792 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 1793 | % |
| 1794 | % A description of each parameter follows: |
| 1795 | % |
| 1796 | % o image: the image. |
| 1797 | % |
| 1798 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 1799 | % pixels. |
| 1800 | % |
| 1801 | % o nexus_info: the cache nexus to return. |
| 1802 | % |
| 1803 | % o exception: return any errors or warnings in this structure. |
| 1804 | % |
| 1805 | */ |
| 1806 | |
| 1807 | static inline MagickBooleanType IsNexusInCore(const CacheInfo *cache_info, |
| 1808 | NexusInfo *nexus_info) |
| 1809 | { |
| 1810 | MagickOffsetType |
| 1811 | offset; |
| 1812 | |
| 1813 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 1814 | nexus_info->region.x; |
| 1815 | if (nexus_info->pixels != (cache_info->pixels+offset)) |
| 1816 | return(MagickFalse); |
| 1817 | return(MagickTrue); |
| 1818 | } |
| 1819 | |
| 1820 | MagickExport PixelPacket *GetAuthenticPixelCacheNexus(Image *image,const long x, |
| 1821 | const long y,const unsigned long columns,const unsigned long rows, |
| 1822 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 1823 | { |
| 1824 | CacheInfo |
| 1825 | *cache_info; |
| 1826 | |
| 1827 | PixelPacket |
| 1828 | *pixels; |
| 1829 | |
| 1830 | /* |
| 1831 | Transfer pixels from the cache. |
| 1832 | */ |
| 1833 | assert(image != (Image *) NULL); |
| 1834 | assert(image->signature == MagickSignature); |
| 1835 | if (image->debug != MagickFalse) |
| 1836 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1837 | pixels=QueueAuthenticNexus(image,x,y,columns,rows,nexus_info,exception); |
| 1838 | if (pixels == (PixelPacket *) NULL) |
| 1839 | return((PixelPacket *) NULL); |
| 1840 | cache_info=(CacheInfo *) image->cache; |
| 1841 | assert(cache_info->signature == MagickSignature); |
| 1842 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 1843 | return(pixels); |
| 1844 | if (ReadPixelCachePixels(cache_info,nexus_info,exception) == MagickFalse) |
| 1845 | return((PixelPacket *) NULL); |
| 1846 | if (cache_info->active_index_channel != MagickFalse) |
| 1847 | if (ReadPixelCacheIndexes(cache_info,nexus_info,exception) == MagickFalse) |
| 1848 | return((PixelPacket *) NULL); |
| 1849 | return(pixels); |
| 1850 | } |
| 1851 | |
| 1852 | /* |
| 1853 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1854 | % % |
| 1855 | % % |
| 1856 | % % |
| 1857 | + 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 % |
| 1858 | % % |
| 1859 | % % |
| 1860 | % % |
| 1861 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1862 | % |
| 1863 | % GetAuthenticPixelsFromCache() returns the pixels associated with the last |
| 1864 | % call to the QueueAuthenticPixelsCache() or GetAuthenticPixelsCache() methods. |
| 1865 | % |
| 1866 | % The format of the GetAuthenticPixelsFromCache() method is: |
| 1867 | % |
| 1868 | % PixelPacket *GetAuthenticPixelsFromCache(const Image image) |
| 1869 | % |
| 1870 | % A description of each parameter follows: |
| 1871 | % |
| 1872 | % o image: the image. |
| 1873 | % |
| 1874 | */ |
| 1875 | static PixelPacket *GetAuthenticPixelsFromCache(const Image *image) |
| 1876 | { |
| 1877 | CacheInfo |
| 1878 | *cache_info; |
| 1879 | |
| 1880 | long |
| 1881 | id; |
| 1882 | |
| 1883 | PixelPacket |
| 1884 | *pixels; |
| 1885 | |
| 1886 | if (image->debug != MagickFalse) |
| 1887 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1888 | cache_info=(CacheInfo *) image->cache; |
| 1889 | id=GetOpenMPThreadId(); |
| 1890 | assert(id < (long) cache_info->number_threads); |
| 1891 | pixels=GetPixelCacheNexusPixels(image->cache,cache_info->nexus_info[id]); |
| 1892 | return(pixels); |
| 1893 | } |
| 1894 | |
| 1895 | /* |
| 1896 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1897 | % % |
| 1898 | % % |
| 1899 | % % |
| 1900 | % G e t A u t h e n t i c P i x e l Q u e u e % |
| 1901 | % % |
| 1902 | % % |
| 1903 | % % |
| 1904 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1905 | % |
| 1906 | % GetAuthenticPixelQueue() returns the authentic pixels associated with the |
| 1907 | % last call to QueueAuthenticPixels() or GetAuthenticPixels(). |
| 1908 | % |
| 1909 | % The format of the GetAuthenticPixelQueue() method is: |
| 1910 | % |
| 1911 | % PixelPacket *GetAuthenticPixelQueue(const Image image) |
| 1912 | % |
| 1913 | % A description of each parameter follows: |
| 1914 | % |
| 1915 | % o image: the image. |
| 1916 | % |
| 1917 | */ |
| 1918 | MagickExport PixelPacket *GetAuthenticPixelQueue(const Image *image) |
| 1919 | { |
| 1920 | CacheInfo |
| 1921 | *cache_info; |
| 1922 | |
| 1923 | assert(image != (const Image *) NULL); |
| 1924 | assert(image->signature == MagickSignature); |
| 1925 | if (image->debug != MagickFalse) |
| 1926 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1927 | assert(image->cache != (Cache) NULL); |
| 1928 | cache_info=(CacheInfo *) image->cache; |
| 1929 | assert(cache_info->signature == MagickSignature); |
| 1930 | if (cache_info->methods.get_authentic_pixels_from_handler == |
| 1931 | (GetAuthenticPixelsFromHandler) NULL) |
| 1932 | return((PixelPacket *) NULL); |
| 1933 | return(cache_info->methods.get_authentic_pixels_from_handler(image)); |
| 1934 | } |
| 1935 | |
| 1936 | /* |
| 1937 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1938 | % % |
| 1939 | % % |
| 1940 | % % |
| 1941 | % G e t A u t h e n t i c P i x e l s % |
| 1942 | % % |
| 1943 | % % |
| 1944 | % % |
| 1945 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1946 | % |
| 1947 | % GetAuthenticPixels() obtains a pixel region for read/write access. If the |
| 1948 | % region is successfully accessed, a pointer to a PixelPacket array |
| 1949 | % representing the region is returned, otherwise NULL is returned. |
| 1950 | % |
| 1951 | % The returned pointer may point to a temporary working copy of the pixels |
| 1952 | % or it may point to the original pixels in memory. Performance is maximized |
| 1953 | % if the selected region is part of one row, or one or more full rows, since |
| 1954 | % then there is opportunity to access the pixels in-place (without a copy) |
cristy | ad4e5b2 | 2010-01-10 00:04:19 +0000 | [diff] [blame] | 1955 | % if the image is in memory, or in a memory-mapped file. The returned pointer |
| 1956 | % must *never* be deallocated by the user. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1957 | % |
| 1958 | % Pixels accessed via the returned pointer represent a simple array of type |
| 1959 | % PixelPacket. If the image type is CMYK or if the storage class is |
| 1960 | % PseduoClass, call GetAuthenticIndexQueue() after invoking |
| 1961 | % GetAuthenticPixels() to obtain the black color component or colormap indexes |
| 1962 | % (of type IndexPacket) corresponding to the region. Once the PixelPacket |
| 1963 | % (and/or IndexPacket) array has been updated, the changes must be saved back |
| 1964 | % to the underlying image using SyncAuthenticPixels() or they may be lost. |
| 1965 | % |
| 1966 | % The format of the GetAuthenticPixels() method is: |
| 1967 | % |
| 1968 | % PixelPacket *GetAuthenticPixels(Image *image,const long x,const long y, |
| 1969 | % const unsigned long columns,const unsigned long rows, |
| 1970 | % ExceptionInfo *exception) |
| 1971 | % |
| 1972 | % A description of each parameter follows: |
| 1973 | % |
| 1974 | % o image: the image. |
| 1975 | % |
| 1976 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 1977 | % pixels. |
| 1978 | % |
| 1979 | % o exception: return any errors or warnings in this structure. |
| 1980 | % |
| 1981 | */ |
| 1982 | MagickExport PixelPacket *GetAuthenticPixels(Image *image,const long x, |
| 1983 | const long y,const unsigned long columns,const unsigned long rows, |
| 1984 | ExceptionInfo *exception) |
| 1985 | { |
| 1986 | CacheInfo |
| 1987 | *cache_info; |
| 1988 | |
| 1989 | PixelPacket |
| 1990 | *pixels; |
| 1991 | |
| 1992 | assert(image != (Image *) NULL); |
| 1993 | assert(image->signature == MagickSignature); |
| 1994 | if (image->debug != MagickFalse) |
| 1995 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1996 | assert(image->cache != (Cache) NULL); |
| 1997 | cache_info=(CacheInfo *) image->cache; |
| 1998 | assert(cache_info->signature == MagickSignature); |
| 1999 | if (cache_info->methods.get_authentic_pixels_handler == |
| 2000 | (GetAuthenticPixelsHandler) NULL) |
| 2001 | return((PixelPacket *) NULL); |
| 2002 | pixels=cache_info->methods.get_authentic_pixels_handler(image,x,y,columns, |
| 2003 | rows,exception); |
| 2004 | return(pixels); |
| 2005 | } |
| 2006 | |
| 2007 | /* |
| 2008 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2009 | % % |
| 2010 | % % |
| 2011 | % % |
| 2012 | + G e t A u t h e n t i c P i x e l s C a c h e % |
| 2013 | % % |
| 2014 | % % |
| 2015 | % % |
| 2016 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2017 | % |
| 2018 | % GetAuthenticPixelsCache() gets pixels from the in-memory or disk pixel cache |
| 2019 | % as defined by the geometry parameters. A pointer to the pixels is returned |
| 2020 | % if the pixels are transferred, otherwise a NULL is returned. |
| 2021 | % |
| 2022 | % The format of the GetAuthenticPixelsCache() method is: |
| 2023 | % |
| 2024 | % PixelPacket *GetAuthenticPixelsCache(Image *image,const long x, |
| 2025 | % const long y,const unsigned long columns,const unsigned long rows, |
| 2026 | % ExceptionInfo *exception) |
| 2027 | % |
| 2028 | % A description of each parameter follows: |
| 2029 | % |
| 2030 | % o image: the image. |
| 2031 | % |
| 2032 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 2033 | % pixels. |
| 2034 | % |
| 2035 | % o exception: return any errors or warnings in this structure. |
| 2036 | % |
| 2037 | */ |
| 2038 | static PixelPacket *GetAuthenticPixelsCache(Image *image,const long x, |
| 2039 | const long y,const unsigned long columns,const unsigned long rows, |
| 2040 | ExceptionInfo *exception) |
| 2041 | { |
| 2042 | CacheInfo |
| 2043 | *cache_info; |
| 2044 | |
| 2045 | long |
| 2046 | id; |
| 2047 | |
| 2048 | PixelPacket |
| 2049 | *pixels; |
| 2050 | |
| 2051 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickTrue,exception); |
| 2052 | if (cache_info == (Cache) NULL) |
| 2053 | return((PixelPacket *) NULL); |
| 2054 | id=GetOpenMPThreadId(); |
| 2055 | assert(id < (long) cache_info->number_threads); |
| 2056 | pixels=GetAuthenticPixelCacheNexus(image,x,y,columns,rows, |
| 2057 | cache_info->nexus_info[id],exception); |
| 2058 | return(pixels); |
| 2059 | } |
| 2060 | |
| 2061 | /* |
| 2062 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2063 | % % |
| 2064 | % % |
| 2065 | % % |
| 2066 | + G e t I m a g e E x t e n t % |
| 2067 | % % |
| 2068 | % % |
| 2069 | % % |
| 2070 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2071 | % |
| 2072 | % GetImageExtent() returns the extent of the pixels associated with the |
| 2073 | % last call to QueueAuthenticPixels() or GetAuthenticPixels(). |
| 2074 | % |
| 2075 | % The format of the GetImageExtent() method is: |
| 2076 | % |
| 2077 | % MagickSizeType GetImageExtent(const Image *image) |
| 2078 | % |
| 2079 | % A description of each parameter follows: |
| 2080 | % |
| 2081 | % o image: the image. |
| 2082 | % |
| 2083 | */ |
| 2084 | MagickExport MagickSizeType GetImageExtent(const Image *image) |
| 2085 | { |
| 2086 | CacheInfo |
| 2087 | *cache_info; |
| 2088 | |
| 2089 | long |
| 2090 | id; |
| 2091 | |
| 2092 | MagickSizeType |
| 2093 | extent; |
| 2094 | |
| 2095 | assert(image != (Image *) NULL); |
| 2096 | assert(image->signature == MagickSignature); |
| 2097 | if (image->debug != MagickFalse) |
| 2098 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2099 | assert(image->cache != (Cache) NULL); |
| 2100 | cache_info=(CacheInfo *) image->cache; |
| 2101 | assert(cache_info->signature == MagickSignature); |
| 2102 | id=GetOpenMPThreadId(); |
| 2103 | assert(id < (long) cache_info->number_threads); |
| 2104 | extent=GetPixelCacheNexusExtent(image->cache,cache_info->nexus_info[id]); |
| 2105 | return(extent); |
| 2106 | } |
| 2107 | |
| 2108 | /* |
| 2109 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2110 | % % |
| 2111 | % % |
| 2112 | % % |
| 2113 | + G e t I m a g e P i x e l C a c h e % |
| 2114 | % % |
| 2115 | % % |
| 2116 | % % |
| 2117 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2118 | % |
| 2119 | % GetImagePixelCache() ensures that there is only a single reference to the |
| 2120 | % pixel cache to be modified, updating the provided cache pointer to point to |
| 2121 | % a clone of the original pixel cache if necessary. |
| 2122 | % |
| 2123 | % The format of the GetImagePixelCache method is: |
| 2124 | % |
| 2125 | % Cache GetImagePixelCache(Image *image,const MagickBooleanType clone, |
| 2126 | % ExceptionInfo *exception) |
| 2127 | % |
| 2128 | % A description of each parameter follows: |
| 2129 | % |
| 2130 | % o image: the image. |
| 2131 | % |
| 2132 | % o clone: any value other than MagickFalse clones the cache pixels. |
| 2133 | % |
| 2134 | % o exception: return any errors or warnings in this structure. |
| 2135 | % |
| 2136 | */ |
| 2137 | |
| 2138 | static inline MagickBooleanType ValidatePixelCacheMorphology(const Image *image) |
| 2139 | { |
| 2140 | CacheInfo |
| 2141 | *cache_info; |
| 2142 | |
| 2143 | /* |
| 2144 | Does the image match the pixel cache morphology? |
| 2145 | */ |
| 2146 | cache_info=(CacheInfo *) image->cache; |
| 2147 | if ((image->storage_class != cache_info->storage_class) || |
| 2148 | (image->colorspace != cache_info->colorspace) || |
| 2149 | (image->columns != cache_info->columns) || |
| 2150 | (image->rows != cache_info->rows) || |
| 2151 | (cache_info->nexus_info == (NexusInfo **) NULL) || |
| 2152 | (cache_info->number_threads < GetOpenMPMaximumThreads())) |
| 2153 | return(MagickFalse); |
| 2154 | return(MagickTrue); |
| 2155 | } |
| 2156 | |
| 2157 | MagickExport Cache GetImagePixelCache(Image *image, |
| 2158 | const MagickBooleanType clone,ExceptionInfo *exception) |
| 2159 | { |
| 2160 | CacheInfo |
| 2161 | *cache_info; |
| 2162 | |
| 2163 | MagickSizeType |
| 2164 | time_limit; |
| 2165 | |
| 2166 | MagickBooleanType |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2167 | destroy, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2168 | status; |
| 2169 | |
| 2170 | if (image->debug != MagickFalse) |
| 2171 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2172 | status=MagickTrue; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 2173 | LockSemaphoreInfo(image->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2174 | time_limit=GetMagickResourceLimit(TimeResource); |
| 2175 | if (cache_timer == 0) |
| 2176 | cache_timer=time((time_t *) NULL); |
| 2177 | if ((time_limit != MagickResourceInfinity) && |
| 2178 | ((MagickSizeType) (time((time_t *) NULL)-cache_timer) >= time_limit)) |
| 2179 | ThrowFatalException(ResourceLimitFatalError,"TimeLimitExceeded"); |
| 2180 | assert(image->cache != (Cache) NULL); |
| 2181 | cache_info=(CacheInfo *) image->cache; |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2182 | destroy=MagickFalse; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 2183 | LockSemaphoreInfo(cache_info->semaphore); |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame] | 2184 | if ((cache_info->reference_count > 1) || (cache_info->mode == ReadMode)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2185 | { |
| 2186 | Image |
| 2187 | clone_image; |
| 2188 | |
| 2189 | CacheInfo |
| 2190 | *clone_info; |
| 2191 | |
| 2192 | /* |
| 2193 | Clone pixel cache. |
| 2194 | */ |
| 2195 | clone_image=(*image); |
| 2196 | clone_image.cache=ClonePixelCache(cache_info); |
| 2197 | clone_info=(CacheInfo *) clone_image.cache; |
| 2198 | status=ClonePixelCacheNexus(cache_info,clone_info,exception); |
| 2199 | if (status != MagickFalse) |
| 2200 | { |
| 2201 | status=OpenPixelCache(&clone_image,IOMode,exception); |
| 2202 | if (status != MagickFalse) |
| 2203 | { |
| 2204 | if (clone != MagickFalse) |
| 2205 | status=ClonePixelCachePixels(clone_info,cache_info,exception); |
| 2206 | if (status != MagickFalse) |
| 2207 | { |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2208 | destroy=MagickTrue; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2209 | image->cache=clone_image.cache; |
| 2210 | } |
| 2211 | } |
| 2212 | } |
| 2213 | } |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 2214 | UnlockSemaphoreInfo(cache_info->semaphore); |
cristy | 4320e0e | 2009-09-10 15:00:08 +0000 | [diff] [blame] | 2215 | if (destroy != MagickFalse) |
cristy | f2e1166 | 2009-10-14 01:24:43 +0000 | [diff] [blame] | 2216 | cache_info=(CacheInfo *) DestroyPixelCache(cache_info); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2217 | if (status != MagickFalse) |
| 2218 | { |
| 2219 | /* |
| 2220 | Ensure the image matches the pixel cache morphology. |
| 2221 | */ |
| 2222 | image->taint=MagickTrue; |
| 2223 | image->type=UndefinedType; |
| 2224 | if (image->colorspace == GRAYColorspace) |
| 2225 | image->colorspace=RGBColorspace; |
| 2226 | if (ValidatePixelCacheMorphology(image) == MagickFalse) |
| 2227 | status=OpenPixelCache(image,IOMode,exception); |
| 2228 | } |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 2229 | UnlockSemaphoreInfo(image->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2230 | if (status == MagickFalse) |
| 2231 | return((Cache) NULL); |
| 2232 | return(image->cache); |
| 2233 | } |
| 2234 | |
| 2235 | /* |
| 2236 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2237 | % % |
| 2238 | % % |
| 2239 | % % |
| 2240 | % G e t O n e A u t h e n t i c P i x e l % |
| 2241 | % % |
| 2242 | % % |
| 2243 | % % |
| 2244 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2245 | % |
| 2246 | % GetOneAuthenticPixel() returns a single pixel at the specified (x,y) |
| 2247 | % location. The image background color is returned if an error occurs. |
| 2248 | % |
| 2249 | % The format of the GetOneAuthenticPixel() method is: |
| 2250 | % |
| 2251 | % MagickBooleanType GetOneAuthenticPixel(const Image image,const long x, |
| 2252 | % const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2253 | % |
| 2254 | % A description of each parameter follows: |
| 2255 | % |
| 2256 | % o image: the image. |
| 2257 | % |
| 2258 | % o x,y: These values define the location of the pixel to return. |
| 2259 | % |
| 2260 | % o pixel: return a pixel at the specified (x,y) location. |
| 2261 | % |
| 2262 | % o exception: return any errors or warnings in this structure. |
| 2263 | % |
| 2264 | */ |
| 2265 | MagickExport MagickBooleanType GetOneAuthenticPixel(Image *image,const long x, |
| 2266 | const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2267 | { |
| 2268 | CacheInfo |
| 2269 | *cache_info; |
| 2270 | |
| 2271 | GetOneAuthenticPixelFromHandler |
| 2272 | get_one_authentic_pixel_from_handler; |
| 2273 | |
| 2274 | MagickBooleanType |
| 2275 | status; |
| 2276 | |
| 2277 | assert(image != (Image *) NULL); |
| 2278 | assert(image->signature == MagickSignature); |
| 2279 | if (image->debug != MagickFalse) |
| 2280 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2281 | assert(image->cache != (Cache) NULL); |
| 2282 | cache_info=(CacheInfo *) image->cache; |
| 2283 | assert(cache_info->signature == MagickSignature); |
| 2284 | *pixel=image->background_color; |
| 2285 | get_one_authentic_pixel_from_handler= |
| 2286 | cache_info->methods.get_one_authentic_pixel_from_handler; |
| 2287 | if (get_one_authentic_pixel_from_handler == |
| 2288 | (GetOneAuthenticPixelFromHandler) NULL) |
| 2289 | return(MagickFalse); |
| 2290 | status=cache_info->methods.get_one_authentic_pixel_from_handler(image,x,y, |
| 2291 | pixel,exception); |
| 2292 | return(status); |
| 2293 | } |
| 2294 | |
| 2295 | /* |
| 2296 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2297 | % % |
| 2298 | % % |
| 2299 | % % |
| 2300 | + 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 % |
| 2301 | % % |
| 2302 | % % |
| 2303 | % % |
| 2304 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2305 | % |
| 2306 | % GetOneAuthenticPixelFromCache() returns a single pixel at the specified (x,y) |
| 2307 | % location. The image background color is returned if an error occurs. |
| 2308 | % |
| 2309 | % The format of the GetOneAuthenticPixelFromCache() method is: |
| 2310 | % |
| 2311 | % MagickBooleanType GetOneAuthenticPixelFromCache(const Image image, |
| 2312 | % const long x,const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2313 | % |
| 2314 | % A description of each parameter follows: |
| 2315 | % |
| 2316 | % o image: the image. |
| 2317 | % |
| 2318 | % o x,y: These values define the location of the pixel to return. |
| 2319 | % |
| 2320 | % o pixel: return a pixel at the specified (x,y) location. |
| 2321 | % |
| 2322 | % o exception: return any errors or warnings in this structure. |
| 2323 | % |
| 2324 | */ |
| 2325 | static MagickBooleanType GetOneAuthenticPixelFromCache(Image *image, |
| 2326 | const long x,const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2327 | { |
| 2328 | PixelPacket |
| 2329 | *pixels; |
| 2330 | |
| 2331 | if (image->debug != MagickFalse) |
| 2332 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2333 | *pixel=image->background_color; |
| 2334 | pixels=GetAuthenticPixelsCache(image,x,y,1UL,1UL,exception); |
| 2335 | if (pixels == (PixelPacket *) NULL) |
| 2336 | return(MagickFalse); |
| 2337 | *pixel=(*pixels); |
| 2338 | return(MagickTrue); |
| 2339 | } |
| 2340 | |
| 2341 | /* |
| 2342 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2343 | % % |
| 2344 | % % |
| 2345 | % % |
| 2346 | % G e t O n e V i r t u a l M a g i c k P i x e l % |
| 2347 | % % |
| 2348 | % % |
| 2349 | % % |
| 2350 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2351 | % |
| 2352 | % GetOneVirtualMagickPixel() returns a single pixel at the specified (x,y) |
| 2353 | % location. The image background color is returned if an error occurs. If |
| 2354 | % you plan to modify the pixel, use GetOneAuthenticPixel() instead. |
| 2355 | % |
| 2356 | % The format of the GetOneVirtualMagickPixel() method is: |
| 2357 | % |
| 2358 | % MagickBooleanType GetOneVirtualMagickPixel(const Image image, |
| 2359 | % const long x,const long y,MagickPixelPacket *pixel, |
| 2360 | % ExceptionInfo exception) |
| 2361 | % |
| 2362 | % A description of each parameter follows: |
| 2363 | % |
| 2364 | % o image: the image. |
| 2365 | % |
| 2366 | % o x,y: these values define the location of the pixel to return. |
| 2367 | % |
| 2368 | % o pixel: return a pixel at the specified (x,y) location. |
| 2369 | % |
| 2370 | % o exception: return any errors or warnings in this structure. |
| 2371 | % |
| 2372 | */ |
| 2373 | MagickExport MagickBooleanType GetOneVirtualMagickPixel(const Image *image, |
| 2374 | const long x,const long y,MagickPixelPacket *pixel,ExceptionInfo *exception) |
| 2375 | { |
| 2376 | CacheInfo |
| 2377 | *cache_info; |
| 2378 | |
| 2379 | register const IndexPacket |
| 2380 | *indexes; |
| 2381 | |
| 2382 | register const PixelPacket |
| 2383 | *p; |
| 2384 | |
| 2385 | assert(image != (const Image *) NULL); |
| 2386 | assert(image->signature == MagickSignature); |
| 2387 | assert(image->cache != (Cache) NULL); |
| 2388 | cache_info=(CacheInfo *) image->cache; |
| 2389 | assert(cache_info->signature == MagickSignature); |
| 2390 | GetMagickPixelPacket(image,pixel); |
| 2391 | p=GetVirtualPixelCache(image,GetPixelCacheVirtualMethod(image),x,y,1,1, |
| 2392 | exception); |
| 2393 | if (p == (const PixelPacket *) NULL) |
| 2394 | return(MagickFalse); |
| 2395 | indexes=GetVirtualIndexQueue(image); |
| 2396 | SetMagickPixelPacket(image,p,indexes,pixel); |
| 2397 | return(MagickTrue); |
| 2398 | } |
| 2399 | |
| 2400 | /* |
| 2401 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2402 | % % |
| 2403 | % % |
| 2404 | % % |
| 2405 | % G e t O n e V i r t u a l M e t h o d P i x e l % |
| 2406 | % % |
| 2407 | % % |
| 2408 | % % |
| 2409 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2410 | % |
| 2411 | % GetOneVirtualMethodPixel() returns a single pixel at the specified (x,y) |
| 2412 | % location as defined by specified pixel method. The image background color |
| 2413 | % is returned if an error occurs. If you plan to modify the pixel, use |
| 2414 | % GetOneAuthenticPixel() instead. |
| 2415 | % |
| 2416 | % The format of the GetOneVirtualMethodPixel() method is: |
| 2417 | % |
| 2418 | % MagickBooleanType GetOneVirtualMethodPixel(const Image image, |
| 2419 | % const VirtualPixelMethod virtual_pixel_method,const long x, |
| 2420 | % const long y,Pixelpacket *pixel,ExceptionInfo exception) |
| 2421 | % |
| 2422 | % A description of each parameter follows: |
| 2423 | % |
| 2424 | % o image: the image. |
| 2425 | % |
| 2426 | % o virtual_pixel_method: the virtual pixel method. |
| 2427 | % |
| 2428 | % o x,y: These values define the location of the pixel to return. |
| 2429 | % |
| 2430 | % o pixel: return a pixel at the specified (x,y) location. |
| 2431 | % |
| 2432 | % o exception: return any errors or warnings in this structure. |
| 2433 | % |
| 2434 | */ |
| 2435 | MagickExport MagickBooleanType GetOneVirtualMethodPixel(const Image *image, |
| 2436 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 2437 | PixelPacket *pixel,ExceptionInfo *exception) |
| 2438 | { |
| 2439 | GetOneVirtualPixelFromHandler |
| 2440 | get_one_virtual_pixel_from_handler; |
| 2441 | |
| 2442 | CacheInfo |
| 2443 | *cache_info; |
| 2444 | |
| 2445 | MagickBooleanType |
| 2446 | status; |
| 2447 | |
| 2448 | assert(image != (const Image *) NULL); |
| 2449 | assert(image->signature == MagickSignature); |
| 2450 | assert(image->cache != (Cache) NULL); |
| 2451 | cache_info=(CacheInfo *) image->cache; |
| 2452 | assert(cache_info->signature == MagickSignature); |
| 2453 | *pixel=image->background_color; |
| 2454 | get_one_virtual_pixel_from_handler= |
| 2455 | cache_info->methods.get_one_virtual_pixel_from_handler; |
| 2456 | if (get_one_virtual_pixel_from_handler == |
| 2457 | (GetOneVirtualPixelFromHandler) NULL) |
| 2458 | return(MagickFalse); |
| 2459 | status=get_one_virtual_pixel_from_handler(image,virtual_pixel_method,x,y, |
| 2460 | pixel,exception); |
| 2461 | return(status); |
| 2462 | } |
| 2463 | |
| 2464 | /* |
| 2465 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2466 | % % |
| 2467 | % % |
| 2468 | % % |
| 2469 | % G e t O n e V i r t u a l P i x e l % |
| 2470 | % % |
| 2471 | % % |
| 2472 | % % |
| 2473 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2474 | % |
| 2475 | % GetOneVirtualPixel() returns a single virtual pixel at the specified |
| 2476 | % (x,y) location. The image background color is returned if an error occurs. |
| 2477 | % If you plan to modify the pixel, use GetOneAuthenticPixel() instead. |
| 2478 | % |
| 2479 | % The format of the GetOneVirtualPixel() method is: |
| 2480 | % |
| 2481 | % MagickBooleanType GetOneVirtualPixel(const Image image,const long x, |
| 2482 | % const long y,PixelPacket *pixel,ExceptionInfo exception) |
| 2483 | % |
| 2484 | % A description of each parameter follows: |
| 2485 | % |
| 2486 | % o image: the image. |
| 2487 | % |
| 2488 | % o x,y: These values define the location of the pixel to return. |
| 2489 | % |
| 2490 | % o pixel: return a pixel at the specified (x,y) location. |
| 2491 | % |
| 2492 | % o exception: return any errors or warnings in this structure. |
| 2493 | % |
| 2494 | */ |
| 2495 | MagickExport MagickBooleanType GetOneVirtualPixel(const Image *image, |
| 2496 | const long x,const long y,PixelPacket *pixel,ExceptionInfo *exception) |
| 2497 | { |
| 2498 | GetOneVirtualPixelFromHandler |
| 2499 | get_one_virtual_pixel_from_handler; |
| 2500 | |
| 2501 | CacheInfo |
| 2502 | *cache_info; |
| 2503 | |
| 2504 | MagickBooleanType |
| 2505 | status; |
| 2506 | |
| 2507 | assert(image != (const Image *) NULL); |
| 2508 | assert(image->signature == MagickSignature); |
| 2509 | assert(image->cache != (Cache) NULL); |
| 2510 | cache_info=(CacheInfo *) image->cache; |
| 2511 | assert(cache_info->signature == MagickSignature); |
| 2512 | *pixel=image->background_color; |
| 2513 | get_one_virtual_pixel_from_handler= |
| 2514 | cache_info->methods.get_one_virtual_pixel_from_handler; |
| 2515 | if (get_one_virtual_pixel_from_handler == |
| 2516 | (GetOneVirtualPixelFromHandler) NULL) |
| 2517 | return(MagickFalse); |
| 2518 | status=get_one_virtual_pixel_from_handler(image,GetPixelCacheVirtualMethod( |
| 2519 | image),x,y,pixel,exception); |
| 2520 | return(status); |
| 2521 | } |
| 2522 | |
| 2523 | /* |
| 2524 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2525 | % % |
| 2526 | % % |
| 2527 | % % |
| 2528 | + 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 % |
| 2529 | % % |
| 2530 | % % |
| 2531 | % % |
| 2532 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2533 | % |
| 2534 | % GetOneVirtualPixelFromCache() returns a single virtual pixel at the |
| 2535 | % specified (x,y) location. The image background color is returned if an |
| 2536 | % error occurs. |
| 2537 | % |
| 2538 | % The format of the GetOneVirtualPixelFromCache() method is: |
| 2539 | % |
| 2540 | % MagickBooleanType GetOneVirtualPixelFromCache(const Image image, |
| 2541 | % const VirtualPixelPacket method,const long x,const long y, |
| 2542 | % PixelPacket *pixel,ExceptionInfo *exception) |
| 2543 | % |
| 2544 | % A description of each parameter follows: |
| 2545 | % |
| 2546 | % o image: the image. |
| 2547 | % |
| 2548 | % o virtual_pixel_method: the virtual pixel method. |
| 2549 | % |
| 2550 | % o x,y: These values define the location of the pixel to return. |
| 2551 | % |
| 2552 | % o pixel: return a pixel at the specified (x,y) location. |
| 2553 | % |
| 2554 | % o exception: return any errors or warnings in this structure. |
| 2555 | % |
| 2556 | */ |
| 2557 | static MagickBooleanType GetOneVirtualPixelFromCache(const Image *image, |
| 2558 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 2559 | PixelPacket *pixel,ExceptionInfo *exception) |
| 2560 | { |
| 2561 | const PixelPacket |
| 2562 | *pixels; |
| 2563 | |
| 2564 | *pixel=image->background_color; |
| 2565 | pixels=GetVirtualPixelCache(image,virtual_pixel_method,x,y,1UL,1UL,exception); |
| 2566 | if (pixels == (const PixelPacket *) NULL) |
| 2567 | return(MagickFalse); |
| 2568 | *pixel=(*pixels); |
| 2569 | return(MagickTrue); |
| 2570 | } |
| 2571 | |
| 2572 | /* |
| 2573 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2574 | % % |
| 2575 | % % |
| 2576 | % % |
| 2577 | + G e t P i x e l C a c h e C o l o r s p a c e % |
| 2578 | % % |
| 2579 | % % |
| 2580 | % % |
| 2581 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2582 | % |
| 2583 | % GetPixelCacheColorspace() returns the class type of the pixel cache. |
| 2584 | % |
| 2585 | % The format of the GetPixelCacheColorspace() method is: |
| 2586 | % |
| 2587 | % Colorspace GetPixelCacheColorspace(Cache cache) |
| 2588 | % |
| 2589 | % A description of each parameter follows: |
| 2590 | % |
| 2591 | % o cache: the pixel cache. |
| 2592 | % |
| 2593 | */ |
| 2594 | MagickExport ColorspaceType GetPixelCacheColorspace(const Cache cache) |
| 2595 | { |
| 2596 | CacheInfo |
| 2597 | *cache_info; |
| 2598 | |
| 2599 | assert(cache != (Cache) NULL); |
| 2600 | cache_info=(CacheInfo *) cache; |
| 2601 | assert(cache_info->signature == MagickSignature); |
| 2602 | if (cache_info->debug != MagickFalse) |
| 2603 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2604 | cache_info->filename); |
| 2605 | return(cache_info->colorspace); |
| 2606 | } |
| 2607 | |
| 2608 | /* |
| 2609 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2610 | % % |
| 2611 | % % |
| 2612 | % % |
| 2613 | + G e t P i x e l C a c h e M e t h o d s % |
| 2614 | % % |
| 2615 | % % |
| 2616 | % % |
| 2617 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2618 | % |
| 2619 | % GetPixelCacheMethods() initializes the CacheMethods structure. |
| 2620 | % |
| 2621 | % The format of the GetPixelCacheMethods() method is: |
| 2622 | % |
| 2623 | % void GetPixelCacheMethods(CacheMethods *cache_methods) |
| 2624 | % |
| 2625 | % A description of each parameter follows: |
| 2626 | % |
| 2627 | % o cache_methods: Specifies a pointer to a CacheMethods structure. |
| 2628 | % |
| 2629 | */ |
| 2630 | MagickExport void GetPixelCacheMethods(CacheMethods *cache_methods) |
| 2631 | { |
| 2632 | assert(cache_methods != (CacheMethods *) NULL); |
| 2633 | (void) ResetMagickMemory(cache_methods,0,sizeof(*cache_methods)); |
| 2634 | cache_methods->get_virtual_pixel_handler=GetVirtualPixelCache; |
| 2635 | cache_methods->get_virtual_pixels_handler=GetVirtualPixelsCache; |
| 2636 | cache_methods->get_virtual_indexes_from_handler=GetVirtualIndexesFromCache; |
| 2637 | cache_methods->get_one_virtual_pixel_from_handler=GetOneVirtualPixelFromCache; |
| 2638 | cache_methods->get_authentic_pixels_handler=GetAuthenticPixelsCache; |
| 2639 | cache_methods->get_authentic_indexes_from_handler= |
| 2640 | GetAuthenticIndexesFromCache; |
| 2641 | cache_methods->get_authentic_pixels_from_handler=GetAuthenticPixelsFromCache; |
| 2642 | cache_methods->get_one_authentic_pixel_from_handler= |
| 2643 | GetOneAuthenticPixelFromCache; |
| 2644 | cache_methods->queue_authentic_pixels_handler=QueueAuthenticPixelsCache; |
| 2645 | cache_methods->sync_authentic_pixels_handler=SyncAuthenticPixelsCache; |
| 2646 | cache_methods->destroy_pixel_handler=DestroyImagePixelCache; |
| 2647 | } |
| 2648 | |
| 2649 | /* |
| 2650 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2651 | % % |
| 2652 | % % |
| 2653 | % % |
| 2654 | + G e t P i x e l C a c h e N e x u s E x t e n t % |
| 2655 | % % |
| 2656 | % % |
| 2657 | % % |
| 2658 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2659 | % |
| 2660 | % GetPixelCacheNexusExtent() returns the extent of the pixels associated with |
| 2661 | % the last call to SetPixelCacheNexusPixels() or GetPixelCacheNexusPixels(). |
| 2662 | % |
| 2663 | % The format of the GetPixelCacheNexusExtent() method is: |
| 2664 | % |
| 2665 | % MagickSizeType GetPixelCacheNexusExtent(const Cache cache, |
| 2666 | % NexusInfo *nexus_info) |
| 2667 | % |
| 2668 | % A description of each parameter follows: |
| 2669 | % |
| 2670 | % o nexus_info: the nexus info. |
| 2671 | % |
| 2672 | */ |
| 2673 | MagickExport MagickSizeType GetPixelCacheNexusExtent(const Cache cache, |
| 2674 | NexusInfo *nexus_info) |
| 2675 | { |
| 2676 | CacheInfo |
| 2677 | *cache_info; |
| 2678 | |
| 2679 | MagickSizeType |
| 2680 | extent; |
| 2681 | |
| 2682 | if (cache == (Cache) NULL) |
| 2683 | return(0); |
| 2684 | cache_info=(CacheInfo *) cache; |
| 2685 | assert(cache_info->signature == MagickSignature); |
| 2686 | extent=(MagickSizeType) nexus_info->region.width*nexus_info->region.height; |
| 2687 | if (extent == 0) |
| 2688 | return((MagickSizeType) cache_info->columns*cache_info->rows); |
| 2689 | return(extent); |
| 2690 | } |
| 2691 | |
| 2692 | /* |
| 2693 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2694 | % % |
| 2695 | % % |
| 2696 | % % |
| 2697 | + 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 % |
| 2698 | % % |
| 2699 | % % |
| 2700 | % % |
| 2701 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2702 | % |
| 2703 | % GetPixelCacheNexusIndexes() returns the indexes associated with the |
| 2704 | % specified cache nexus. |
| 2705 | % |
| 2706 | % The format of the GetPixelCacheNexusIndexes() method is: |
| 2707 | % |
| 2708 | % IndexPacket *GetPixelCacheNexusIndexes(const Cache cache, |
| 2709 | % NexusInfo *nexus_info) |
| 2710 | % |
| 2711 | % A description of each parameter follows: |
| 2712 | % |
| 2713 | % o cache: the pixel cache. |
| 2714 | % |
| 2715 | % o nexus_info: the cache nexus to return the colormap indexes. |
| 2716 | % |
| 2717 | */ |
| 2718 | MagickExport IndexPacket *GetPixelCacheNexusIndexes(const Cache cache, |
| 2719 | NexusInfo *nexus_info) |
| 2720 | { |
| 2721 | CacheInfo |
| 2722 | *cache_info; |
| 2723 | |
| 2724 | if (cache == (Cache) NULL) |
| 2725 | return((IndexPacket *) NULL); |
| 2726 | cache_info=(CacheInfo *) cache; |
| 2727 | assert(cache_info->signature == MagickSignature); |
| 2728 | if (cache_info->storage_class == UndefinedClass) |
| 2729 | return((IndexPacket *) NULL); |
| 2730 | return(nexus_info->indexes); |
| 2731 | } |
| 2732 | |
| 2733 | /* |
| 2734 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2735 | % % |
| 2736 | % % |
| 2737 | % % |
| 2738 | + G e t P i x e l C a c h e N e x u s P i x e l s % |
| 2739 | % % |
| 2740 | % % |
| 2741 | % % |
| 2742 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2743 | % |
| 2744 | % GetPixelCacheNexusPixels() returns the pixels associated with the specified |
| 2745 | % cache nexus. |
| 2746 | % |
| 2747 | % The format of the GetPixelCacheNexusPixels() method is: |
| 2748 | % |
| 2749 | % PixelPacket *GetPixelCacheNexusPixels(const Cache cache, |
| 2750 | % NexusInfo *nexus_info) |
| 2751 | % |
| 2752 | % A description of each parameter follows: |
| 2753 | % |
| 2754 | % o cache: the pixel cache. |
| 2755 | % |
| 2756 | % o nexus_info: the cache nexus to return the pixels. |
| 2757 | % |
| 2758 | */ |
| 2759 | MagickExport PixelPacket *GetPixelCacheNexusPixels(const Cache cache, |
| 2760 | NexusInfo *nexus_info) |
| 2761 | { |
| 2762 | CacheInfo |
| 2763 | *cache_info; |
| 2764 | |
| 2765 | if (cache == (Cache) NULL) |
| 2766 | return((PixelPacket *) NULL); |
| 2767 | cache_info=(CacheInfo *) cache; |
| 2768 | assert(cache_info->signature == MagickSignature); |
| 2769 | if (cache_info->debug != MagickFalse) |
| 2770 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2771 | cache_info->filename); |
| 2772 | if (cache_info->storage_class == UndefinedClass) |
| 2773 | return((PixelPacket *) NULL); |
| 2774 | return(nexus_info->pixels); |
| 2775 | } |
| 2776 | |
| 2777 | /* |
| 2778 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2779 | % % |
| 2780 | % % |
| 2781 | % % |
cristy | 056ba77 | 2010-01-02 23:33:54 +0000 | [diff] [blame] | 2782 | + G e t P i x e l C a c h e P i x e l s % |
| 2783 | % % |
| 2784 | % % |
| 2785 | % % |
| 2786 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2787 | % |
| 2788 | % GetPixelCachePixels() returns the pixels associated with the specified image. |
| 2789 | % |
| 2790 | % The format of the GetPixelCachePixels() method is: |
| 2791 | % |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 2792 | % void *GetPixelCachePixels(Image *image,MagickSizeType *length, |
| 2793 | % ExceptionInfo *exception) |
cristy | 056ba77 | 2010-01-02 23:33:54 +0000 | [diff] [blame] | 2794 | % |
| 2795 | % A description of each parameter follows: |
| 2796 | % |
| 2797 | % o image: the image. |
| 2798 | % |
| 2799 | % o length: the pixel cache length. |
| 2800 | % |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 2801 | % o exception: return any errors or warnings in this structure. |
| 2802 | % |
cristy | 056ba77 | 2010-01-02 23:33:54 +0000 | [diff] [blame] | 2803 | */ |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 2804 | MagickExport void *GetPixelCachePixels(Image *image,MagickSizeType *length, |
| 2805 | ExceptionInfo *exception) |
cristy | 056ba77 | 2010-01-02 23:33:54 +0000 | [diff] [blame] | 2806 | { |
| 2807 | CacheInfo |
| 2808 | *cache_info; |
| 2809 | |
| 2810 | assert(image != (const 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); |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 2815 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickTrue,exception); |
cristy | 056ba77 | 2010-01-02 23:33:54 +0000 | [diff] [blame] | 2816 | assert(cache_info->signature == MagickSignature); |
| 2817 | *length=0; |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 2818 | if ((cache_info->type != MemoryCache) && (cache_info->type != MapCache)) |
cristy | 056ba77 | 2010-01-02 23:33:54 +0000 | [diff] [blame] | 2819 | return((void *) NULL); |
| 2820 | *length=cache_info->length; |
| 2821 | return((void *) cache_info->pixels); |
| 2822 | } |
| 2823 | |
| 2824 | /* |
| 2825 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2826 | % % |
| 2827 | % % |
| 2828 | % % |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 2829 | + 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] | 2830 | % % |
| 2831 | % % |
| 2832 | % % |
| 2833 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2834 | % |
| 2835 | % GetPixelCacheStorageClass() returns the class type of the pixel cache. |
| 2836 | % |
| 2837 | % The format of the GetPixelCacheStorageClass() method is: |
| 2838 | % |
| 2839 | % ClassType GetPixelCacheStorageClass(Cache cache) |
| 2840 | % |
| 2841 | % A description of each parameter follows: |
| 2842 | % |
| 2843 | % o type: GetPixelCacheStorageClass returns DirectClass or PseudoClass. |
| 2844 | % |
| 2845 | % o cache: the pixel cache. |
| 2846 | % |
| 2847 | */ |
| 2848 | MagickExport ClassType GetPixelCacheStorageClass(const Cache cache) |
| 2849 | { |
| 2850 | CacheInfo |
| 2851 | *cache_info; |
| 2852 | |
| 2853 | assert(cache != (Cache) NULL); |
| 2854 | cache_info=(CacheInfo *) cache; |
| 2855 | assert(cache_info->signature == MagickSignature); |
| 2856 | if (cache_info->debug != MagickFalse) |
| 2857 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2858 | cache_info->filename); |
| 2859 | return(cache_info->storage_class); |
| 2860 | } |
| 2861 | |
| 2862 | /* |
| 2863 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2864 | % % |
| 2865 | % % |
| 2866 | % % |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 2867 | + G e t P i x e l C a c h e T i l e S i z e % |
| 2868 | % % |
| 2869 | % % |
| 2870 | % % |
| 2871 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2872 | % |
| 2873 | % GetPixelCacheTileSize() returns the pixel cache tile size. |
| 2874 | % |
| 2875 | % The format of the GetPixelCacheTileSize() method is: |
| 2876 | % |
| 2877 | % void GetPixelCacheTileSize(const Image *image,unsigned long *width, |
| 2878 | % unsigned long *height) |
| 2879 | % |
| 2880 | % A description of each parameter follows: |
| 2881 | % |
| 2882 | % o image: the image. |
| 2883 | % |
| 2884 | % o width: the optimize cache tile width in pixels. |
| 2885 | % |
| 2886 | % o height: the optimize cache tile height in pixels. |
| 2887 | % |
| 2888 | */ |
| 2889 | MagickExport void GetPixelCacheTileSize(const Image *image,unsigned long *width, |
| 2890 | unsigned long *height) |
| 2891 | { |
| 2892 | CacheInfo |
| 2893 | *cache_info; |
| 2894 | |
| 2895 | assert(image != (Image *) NULL); |
| 2896 | assert(image->signature == MagickSignature); |
| 2897 | if (image->debug != MagickFalse) |
| 2898 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2899 | assert(image->cache != (Cache) NULL); |
| 2900 | cache_info=(CacheInfo *) image->cache; |
| 2901 | assert(cache_info->signature == MagickSignature); |
| 2902 | *width=2048UL/sizeof(PixelPacket); |
| 2903 | if (GetPixelCacheType(image) == DiskCache) |
cristy | daa9769 | 2009-09-13 02:10:35 +0000 | [diff] [blame] | 2904 | *width=8192UL/sizeof(PixelPacket); |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 2905 | *height=(*width); |
| 2906 | } |
| 2907 | |
| 2908 | /* |
| 2909 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2910 | % % |
| 2911 | % % |
| 2912 | % % |
| 2913 | + G e t P i x e l C a c h e T y p e % |
| 2914 | % % |
| 2915 | % % |
| 2916 | % % |
| 2917 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2918 | % |
| 2919 | % GetPixelCacheType() returns the pixel cache type (e.g. memory, disk, etc.). |
| 2920 | % |
| 2921 | % The format of the GetPixelCacheType() method is: |
| 2922 | % |
| 2923 | % CacheType GetPixelCacheType(const Image *image) |
| 2924 | % |
| 2925 | % A description of each parameter follows: |
| 2926 | % |
| 2927 | % o image: the image. |
| 2928 | % |
| 2929 | */ |
| 2930 | MagickExport CacheType GetPixelCacheType(const Image *image) |
| 2931 | { |
| 2932 | CacheInfo |
| 2933 | *cache_info; |
| 2934 | |
| 2935 | assert(image != (Image *) NULL); |
| 2936 | assert(image->signature == MagickSignature); |
| 2937 | if (image->debug != MagickFalse) |
| 2938 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2939 | assert(image->cache != (Cache) NULL); |
| 2940 | cache_info=(CacheInfo *) image->cache; |
| 2941 | assert(cache_info->signature == MagickSignature); |
| 2942 | return(cache_info->type); |
| 2943 | } |
| 2944 | |
| 2945 | /* |
| 2946 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2947 | % % |
| 2948 | % % |
| 2949 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2950 | + 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 % |
| 2951 | % % |
| 2952 | % % |
| 2953 | % % |
| 2954 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2955 | % |
| 2956 | % GetPixelCacheVirtualMethod() gets the "virtual pixels" method for the |
| 2957 | % pixel cache. A virtual pixel is any pixel access that is outside the |
| 2958 | % boundaries of the image cache. |
| 2959 | % |
| 2960 | % The format of the GetPixelCacheVirtualMethod() method is: |
| 2961 | % |
| 2962 | % VirtualPixelMethod GetPixelCacheVirtualMethod(const Image *image) |
| 2963 | % |
| 2964 | % A description of each parameter follows: |
| 2965 | % |
| 2966 | % o image: the image. |
| 2967 | % |
| 2968 | */ |
| 2969 | MagickExport VirtualPixelMethod GetPixelCacheVirtualMethod(const Image *image) |
| 2970 | { |
| 2971 | CacheInfo |
| 2972 | *cache_info; |
| 2973 | |
| 2974 | assert(image != (Image *) NULL); |
| 2975 | assert(image->signature == MagickSignature); |
| 2976 | if (image->debug != MagickFalse) |
| 2977 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2978 | assert(image->cache != (Cache) NULL); |
| 2979 | cache_info=(CacheInfo *) image->cache; |
| 2980 | assert(cache_info->signature == MagickSignature); |
| 2981 | return(cache_info->virtual_pixel_method); |
| 2982 | } |
| 2983 | |
| 2984 | /* |
| 2985 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2986 | % % |
| 2987 | % % |
| 2988 | % % |
| 2989 | + 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 % |
| 2990 | % % |
| 2991 | % % |
| 2992 | % % |
| 2993 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2994 | % |
| 2995 | % GetVirtualIndexesFromCache() returns the indexes associated with the last |
| 2996 | % call to QueueAuthenticPixelsCache() or GetVirtualPixelCache(). |
| 2997 | % |
| 2998 | % The format of the GetVirtualIndexesFromCache() method is: |
| 2999 | % |
| 3000 | % IndexPacket *GetVirtualIndexesFromCache(const Image *image) |
| 3001 | % |
| 3002 | % A description of each parameter follows: |
| 3003 | % |
| 3004 | % o image: the image. |
| 3005 | % |
| 3006 | */ |
| 3007 | static const IndexPacket *GetVirtualIndexesFromCache(const Image *image) |
| 3008 | { |
| 3009 | CacheInfo |
| 3010 | *cache_info; |
| 3011 | |
| 3012 | const IndexPacket |
| 3013 | *indexes; |
| 3014 | |
| 3015 | long |
| 3016 | id; |
| 3017 | |
| 3018 | if (image->debug != MagickFalse) |
| 3019 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3020 | cache_info=(CacheInfo *) image->cache; |
| 3021 | id=GetOpenMPThreadId(); |
| 3022 | assert(id < (long) cache_info->number_threads); |
| 3023 | indexes=GetVirtualIndexesFromNexus(image->cache,cache_info->nexus_info[id]); |
| 3024 | return(indexes); |
| 3025 | } |
| 3026 | |
| 3027 | /* |
| 3028 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3029 | % % |
| 3030 | % % |
| 3031 | % % |
| 3032 | + 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 % |
| 3033 | % % |
| 3034 | % % |
| 3035 | % % |
| 3036 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3037 | % |
| 3038 | % GetVirtualIndexesFromNexus() returns the indexes associated with the |
| 3039 | % specified cache nexus. |
| 3040 | % |
| 3041 | % The format of the GetVirtualIndexesFromNexus() method is: |
| 3042 | % |
| 3043 | % const IndexPacket *GetVirtualIndexesFromNexus(const Cache cache, |
| 3044 | % NexusInfo *nexus_info) |
| 3045 | % |
| 3046 | % A description of each parameter follows: |
| 3047 | % |
| 3048 | % o cache: the pixel cache. |
| 3049 | % |
| 3050 | % o nexus_info: the cache nexus to return the colormap indexes. |
| 3051 | % |
| 3052 | */ |
| 3053 | MagickExport const IndexPacket *GetVirtualIndexesFromNexus(const Cache cache, |
| 3054 | NexusInfo *nexus_info) |
| 3055 | { |
| 3056 | CacheInfo |
| 3057 | *cache_info; |
| 3058 | |
| 3059 | if (cache == (Cache) NULL) |
| 3060 | return((IndexPacket *) NULL); |
| 3061 | cache_info=(CacheInfo *) cache; |
| 3062 | assert(cache_info->signature == MagickSignature); |
| 3063 | if (cache_info->storage_class == UndefinedClass) |
| 3064 | return((IndexPacket *) NULL); |
| 3065 | return(nexus_info->indexes); |
| 3066 | } |
| 3067 | |
| 3068 | /* |
| 3069 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3070 | % % |
| 3071 | % % |
| 3072 | % % |
| 3073 | % G e t V i r t u a l I n d e x Q u e u e % |
| 3074 | % % |
| 3075 | % % |
| 3076 | % % |
| 3077 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3078 | % |
| 3079 | % GetVirtualIndexQueue() returns the virtual black channel or the |
| 3080 | % colormap indexes associated with the last call to QueueAuthenticPixels() or |
| 3081 | % GetVirtualPixels(). NULL is returned if the black channel or colormap |
| 3082 | % indexes are not available. |
| 3083 | % |
| 3084 | % The format of the GetVirtualIndexQueue() method is: |
| 3085 | % |
| 3086 | % const IndexPacket *GetVirtualIndexQueue(const Image *image) |
| 3087 | % |
| 3088 | % A description of each parameter follows: |
| 3089 | % |
| 3090 | % o image: the image. |
| 3091 | % |
| 3092 | */ |
| 3093 | MagickExport const IndexPacket *GetVirtualIndexQueue(const Image *image) |
| 3094 | { |
| 3095 | CacheInfo |
| 3096 | *cache_info; |
| 3097 | |
| 3098 | assert(image != (const Image *) NULL); |
| 3099 | assert(image->signature == MagickSignature); |
| 3100 | if (image->debug != MagickFalse) |
| 3101 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3102 | assert(image->cache != (Cache) NULL); |
| 3103 | cache_info=(CacheInfo *) image->cache; |
| 3104 | assert(cache_info->signature == MagickSignature); |
| 3105 | if (cache_info->methods.get_virtual_indexes_from_handler == |
| 3106 | (GetVirtualIndexesFromHandler) NULL) |
| 3107 | return((IndexPacket *) NULL); |
| 3108 | return(cache_info->methods.get_virtual_indexes_from_handler(image)); |
| 3109 | } |
| 3110 | |
| 3111 | /* |
| 3112 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3113 | % % |
| 3114 | % % |
| 3115 | % % |
| 3116 | + 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 % |
| 3117 | % % |
| 3118 | % % |
| 3119 | % % |
| 3120 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3121 | % |
| 3122 | % GetVirtualPixelsFromNexus() gets virtual pixels from the in-memory or disk |
| 3123 | % pixel cache as defined by the geometry parameters. A pointer to the pixels |
| 3124 | % is returned if the pixels are transferred, otherwise a NULL is returned. |
| 3125 | % |
| 3126 | % The format of the GetVirtualPixelsFromNexus() method is: |
| 3127 | % |
| 3128 | % PixelPacket *GetVirtualPixelsFromNexus(const Image *image, |
| 3129 | % const VirtualPixelMethod method,const long x,const long y, |
| 3130 | % const unsigned long columns,const unsigned long rows, |
| 3131 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 3132 | % |
| 3133 | % A description of each parameter follows: |
| 3134 | % |
| 3135 | % o image: the image. |
| 3136 | % |
| 3137 | % o virtual_pixel_method: the virtual pixel method. |
| 3138 | % |
| 3139 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 3140 | % pixels. |
| 3141 | % |
| 3142 | % o nexus_info: the cache nexus to acquire. |
| 3143 | % |
| 3144 | % o exception: return any errors or warnings in this structure. |
| 3145 | % |
| 3146 | */ |
| 3147 | |
| 3148 | static long |
| 3149 | DitherMatrix[64] = |
| 3150 | { |
| 3151 | 0, 48, 12, 60, 3, 51, 15, 63, |
| 3152 | 32, 16, 44, 28, 35, 19, 47, 31, |
| 3153 | 8, 56, 4, 52, 11, 59, 7, 55, |
| 3154 | 40, 24, 36, 20, 43, 27, 39, 23, |
| 3155 | 2, 50, 14, 62, 1, 49, 13, 61, |
| 3156 | 34, 18, 46, 30, 33, 17, 45, 29, |
| 3157 | 10, 58, 6, 54, 9, 57, 5, 53, |
| 3158 | 42, 26, 38, 22, 41, 25, 37, 21 |
| 3159 | }; |
| 3160 | |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3161 | static inline long DitherX(const long x,const unsigned long columns) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3162 | { |
| 3163 | long |
| 3164 | index; |
| 3165 | |
| 3166 | index=x+DitherMatrix[x & 0x07]-32L; |
| 3167 | if (index < 0L) |
| 3168 | return(0L); |
| 3169 | if (index >= (long) columns) |
| 3170 | return((long) columns-1L); |
| 3171 | return(index); |
| 3172 | } |
| 3173 | |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3174 | static inline long DitherY(const long y,const unsigned long rows) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3175 | { |
| 3176 | long |
| 3177 | index; |
| 3178 | |
| 3179 | index=y+DitherMatrix[y & 0x07]-32L; |
| 3180 | if (index < 0L) |
| 3181 | return(0L); |
| 3182 | if (index >= (long) rows) |
| 3183 | return((long) rows-1L); |
| 3184 | return(index); |
| 3185 | } |
| 3186 | |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3187 | static inline long EdgeX(const long x,const unsigned long columns) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3188 | { |
| 3189 | if (x < 0L) |
| 3190 | return(0L); |
| 3191 | if (x >= (long) columns) |
cristy | 97be2b9 | 2010-01-09 23:37:55 +0000 | [diff] [blame] | 3192 | return((long) (columns-1)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3193 | return(x); |
| 3194 | } |
| 3195 | |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3196 | static inline long EdgeY(const long y,const unsigned long rows) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3197 | { |
| 3198 | if (y < 0L) |
| 3199 | return(0L); |
| 3200 | if (y >= (long) rows) |
cristy | 97be2b9 | 2010-01-09 23:37:55 +0000 | [diff] [blame] | 3201 | return((long) (rows-1)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3202 | return(y); |
| 3203 | } |
| 3204 | |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3205 | static inline long RandomX(RandomInfo *random_info,const unsigned long columns) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3206 | { |
| 3207 | return((long) (columns*GetPseudoRandomValue(random_info))); |
| 3208 | } |
| 3209 | |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3210 | static inline long RandomY(RandomInfo *random_info,const unsigned long rows) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3211 | { |
| 3212 | return((long) (rows*GetPseudoRandomValue(random_info))); |
| 3213 | } |
| 3214 | |
| 3215 | /* |
| 3216 | VirtualPixelModulo() computes the remainder of dividing offset by extent. It |
| 3217 | returns not only the quotient (tile the offset falls in) but also the positive |
| 3218 | remainer within that tile such that 0 <= remainder < extent. This method is |
| 3219 | essentially a ldiv() using a floored modulo division rather than the normal |
| 3220 | default truncated modulo division. |
| 3221 | */ |
| 3222 | static inline MagickModulo VirtualPixelModulo(const long offset, |
| 3223 | const unsigned long extent) |
| 3224 | { |
| 3225 | MagickModulo |
| 3226 | modulo; |
| 3227 | |
| 3228 | modulo.quotient=offset/(long) extent; |
| 3229 | if (offset < 0L) |
| 3230 | modulo.quotient--; |
| 3231 | modulo.remainder=offset-modulo.quotient*(long) extent; |
| 3232 | return(modulo); |
| 3233 | } |
| 3234 | |
| 3235 | MagickExport const PixelPacket *GetVirtualPixelsFromNexus(const Image *image, |
| 3236 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 3237 | const unsigned long columns,const unsigned long rows,NexusInfo *nexus_info, |
| 3238 | ExceptionInfo *exception) |
| 3239 | { |
| 3240 | CacheInfo |
| 3241 | *cache_info; |
| 3242 | |
| 3243 | MagickOffsetType |
| 3244 | offset; |
| 3245 | |
| 3246 | MagickSizeType |
| 3247 | length, |
| 3248 | number_pixels; |
| 3249 | |
| 3250 | NexusInfo |
| 3251 | **virtual_nexus; |
| 3252 | |
| 3253 | PixelPacket |
| 3254 | *pixels, |
| 3255 | virtual_pixel; |
| 3256 | |
| 3257 | RectangleInfo |
| 3258 | region; |
| 3259 | |
| 3260 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3261 | *restrict nexus_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3262 | |
| 3263 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3264 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3265 | |
| 3266 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3267 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3268 | |
| 3269 | register long |
| 3270 | u, |
| 3271 | v; |
| 3272 | |
| 3273 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3274 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3275 | |
| 3276 | /* |
| 3277 | Acquire pixels. |
| 3278 | */ |
| 3279 | if (image->debug != MagickFalse) |
| 3280 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3281 | cache_info=(CacheInfo *) image->cache; |
| 3282 | if (cache_info->type == UndefinedCache) |
| 3283 | return((const PixelPacket *) NULL); |
| 3284 | region.x=x; |
| 3285 | region.y=y; |
| 3286 | region.width=columns; |
| 3287 | region.height=rows; |
| 3288 | pixels=SetPixelCacheNexusPixels(image,®ion,nexus_info,exception); |
| 3289 | if (pixels == (PixelPacket *) NULL) |
| 3290 | return((const PixelPacket *) NULL); |
| 3291 | offset=(MagickOffsetType) region.y*cache_info->columns+region.x; |
cristy | 4789f0d | 2010-01-10 00:01:06 +0000 | [diff] [blame] | 3292 | length=(MagickSizeType) (region.height-1L)*cache_info->columns+ |
| 3293 | region.width-1L; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3294 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 3295 | if ((offset >= 0) && (((MagickSizeType) offset+length) < number_pixels)) |
| 3296 | if ((x >= 0) && ((long) (x+columns) <= (long) cache_info->columns) && |
| 3297 | (y >= 0) && ((long) (y+rows) <= (long) cache_info->rows)) |
| 3298 | { |
| 3299 | MagickBooleanType |
| 3300 | status; |
| 3301 | |
| 3302 | /* |
| 3303 | Pixel request is inside cache extents. |
| 3304 | */ |
| 3305 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 3306 | return(pixels); |
| 3307 | status=ReadPixelCachePixels(cache_info,nexus_info,exception); |
| 3308 | if (status == MagickFalse) |
| 3309 | return((const PixelPacket *) NULL); |
| 3310 | if ((cache_info->storage_class == PseudoClass) || |
| 3311 | (cache_info->colorspace == CMYKColorspace)) |
| 3312 | { |
| 3313 | status=ReadPixelCacheIndexes(cache_info,nexus_info,exception); |
| 3314 | if (status == MagickFalse) |
| 3315 | return((const PixelPacket *) NULL); |
| 3316 | } |
| 3317 | return(pixels); |
| 3318 | } |
| 3319 | /* |
| 3320 | Pixel request is outside cache extents. |
| 3321 | */ |
| 3322 | q=pixels; |
| 3323 | indexes=GetPixelCacheNexusIndexes(cache_info,nexus_info); |
| 3324 | virtual_nexus=AcquirePixelCacheNexus(1); |
| 3325 | if (virtual_nexus == (NexusInfo **) NULL) |
| 3326 | { |
| 3327 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 3328 | "UnableToGetCacheNexus","`%s'",image->filename); |
| 3329 | return((const PixelPacket *) NULL); |
| 3330 | } |
| 3331 | switch (virtual_pixel_method) |
| 3332 | { |
| 3333 | case BlackVirtualPixelMethod: |
| 3334 | { |
cristy | 4789f0d | 2010-01-10 00:01:06 +0000 | [diff] [blame] | 3335 | SetRedPixelComponent(&virtual_pixel,0); |
| 3336 | SetGreenPixelComponent(&virtual_pixel,0); |
| 3337 | SetBluePixelComponent(&virtual_pixel,0); |
| 3338 | SetOpacityPixelComponent(&virtual_pixel,OpaqueOpacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3339 | break; |
| 3340 | } |
| 3341 | case GrayVirtualPixelMethod: |
| 3342 | { |
cristy | 4789f0d | 2010-01-10 00:01:06 +0000 | [diff] [blame] | 3343 | SetRedPixelComponent(&virtual_pixel,(Quantum) QuantumRange/2); |
| 3344 | SetGreenPixelComponent(&virtual_pixel,(Quantum) QuantumRange/2); |
| 3345 | SetBluePixelComponent(&virtual_pixel,(Quantum) QuantumRange/2); |
| 3346 | SetOpacityPixelComponent(&virtual_pixel,OpaqueOpacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3347 | break; |
| 3348 | } |
| 3349 | case TransparentVirtualPixelMethod: |
| 3350 | { |
cristy | 4789f0d | 2010-01-10 00:01:06 +0000 | [diff] [blame] | 3351 | SetRedPixelComponent(&virtual_pixel,0); |
| 3352 | SetGreenPixelComponent(&virtual_pixel,0); |
| 3353 | SetBluePixelComponent(&virtual_pixel,0); |
| 3354 | SetOpacityPixelComponent(&virtual_pixel,TransparentOpacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3355 | break; |
| 3356 | } |
| 3357 | case MaskVirtualPixelMethod: |
| 3358 | case WhiteVirtualPixelMethod: |
| 3359 | { |
cristy | 4789f0d | 2010-01-10 00:01:06 +0000 | [diff] [blame] | 3360 | SetRedPixelComponent(&virtual_pixel,(Quantum) QuantumRange); |
| 3361 | SetGreenPixelComponent(&virtual_pixel,(Quantum) QuantumRange); |
| 3362 | SetBluePixelComponent(&virtual_pixel,(Quantum) QuantumRange); |
| 3363 | SetOpacityPixelComponent(&virtual_pixel,OpaqueOpacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3364 | break; |
| 3365 | } |
| 3366 | default: |
| 3367 | { |
| 3368 | virtual_pixel=image->background_color; |
| 3369 | break; |
| 3370 | } |
| 3371 | } |
| 3372 | for (v=0; v < (long) rows; v++) |
| 3373 | { |
| 3374 | for (u=0; u < (long) columns; u+=length) |
| 3375 | { |
| 3376 | length=(MagickSizeType) MagickMin(cache_info->columns-(x+u),columns-u); |
| 3377 | if ((((x+u) < 0) || ((x+u) >= (long) cache_info->columns)) || |
| 3378 | (((y+v) < 0) || ((y+v) >= (long) cache_info->rows)) || (length == 0)) |
| 3379 | { |
| 3380 | MagickModulo |
| 3381 | x_modulo, |
| 3382 | y_modulo; |
| 3383 | |
| 3384 | /* |
| 3385 | Transfer a single pixel. |
| 3386 | */ |
| 3387 | length=(MagickSizeType) 1; |
| 3388 | switch (virtual_pixel_method) |
| 3389 | { |
| 3390 | case BackgroundVirtualPixelMethod: |
| 3391 | case ConstantVirtualPixelMethod: |
| 3392 | case BlackVirtualPixelMethod: |
| 3393 | case GrayVirtualPixelMethod: |
| 3394 | case TransparentVirtualPixelMethod: |
| 3395 | case MaskVirtualPixelMethod: |
| 3396 | case WhiteVirtualPixelMethod: |
| 3397 | { |
| 3398 | p=(&virtual_pixel); |
| 3399 | break; |
| 3400 | } |
| 3401 | case EdgeVirtualPixelMethod: |
| 3402 | default: |
| 3403 | { |
| 3404 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3405 | EdgeX(x+u,cache_info->columns),EdgeY(y+v,cache_info->rows), |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3406 | 1UL,1UL,virtual_nexus[0],exception); |
| 3407 | break; |
| 3408 | } |
| 3409 | case RandomVirtualPixelMethod: |
| 3410 | { |
| 3411 | if (cache_info->random_info == (RandomInfo *) NULL) |
| 3412 | cache_info->random_info=AcquireRandomInfo(); |
| 3413 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3414 | RandomX(cache_info->random_info,cache_info->columns), |
| 3415 | RandomY(cache_info->random_info,cache_info->rows),1UL,1UL, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3416 | virtual_nexus[0],exception); |
| 3417 | break; |
| 3418 | } |
| 3419 | case DitherVirtualPixelMethod: |
| 3420 | { |
| 3421 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3422 | DitherX(x+u,cache_info->columns),DitherY(y+v,cache_info->rows), |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3423 | 1UL,1UL,virtual_nexus[0],exception); |
| 3424 | break; |
| 3425 | } |
| 3426 | case TileVirtualPixelMethod: |
| 3427 | { |
| 3428 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3429 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3430 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3431 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3432 | exception); |
| 3433 | break; |
| 3434 | } |
| 3435 | case MirrorVirtualPixelMethod: |
| 3436 | { |
| 3437 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3438 | if ((x_modulo.quotient & 0x01) == 1L) |
| 3439 | x_modulo.remainder=(long) cache_info->columns- |
| 3440 | x_modulo.remainder-1L; |
| 3441 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3442 | if ((y_modulo.quotient & 0x01) == 1L) |
| 3443 | y_modulo.remainder=(long) cache_info->rows- |
| 3444 | y_modulo.remainder-1L; |
| 3445 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3446 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3447 | exception); |
| 3448 | break; |
| 3449 | } |
| 3450 | case CheckerTileVirtualPixelMethod: |
| 3451 | { |
| 3452 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3453 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3454 | if (((x_modulo.quotient ^ y_modulo.quotient) & 0x01) != 0L) |
| 3455 | { |
| 3456 | p=(&virtual_pixel); |
| 3457 | break; |
| 3458 | } |
| 3459 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3460 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3461 | exception); |
| 3462 | break; |
| 3463 | } |
| 3464 | case HorizontalTileVirtualPixelMethod: |
| 3465 | { |
| 3466 | if (((y+v) < 0) || ((y+v) >= (long) cache_info->rows)) |
| 3467 | { |
| 3468 | p=(&virtual_pixel); |
| 3469 | break; |
| 3470 | } |
| 3471 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3472 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3473 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3474 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3475 | exception); |
| 3476 | break; |
| 3477 | } |
| 3478 | case VerticalTileVirtualPixelMethod: |
| 3479 | { |
| 3480 | if (((x+u) < 0) || ((x+u) >= (long) cache_info->columns)) |
| 3481 | { |
| 3482 | p=(&virtual_pixel); |
| 3483 | break; |
| 3484 | } |
| 3485 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3486 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3487 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
| 3488 | x_modulo.remainder,y_modulo.remainder,1UL,1UL,virtual_nexus[0], |
| 3489 | exception); |
| 3490 | break; |
| 3491 | } |
| 3492 | case HorizontalTileEdgeVirtualPixelMethod: |
| 3493 | { |
| 3494 | x_modulo=VirtualPixelModulo(x+u,cache_info->columns); |
| 3495 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3496 | x_modulo.remainder,EdgeY(y+v,cache_info->rows),1UL,1UL, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3497 | virtual_nexus[0],exception); |
| 3498 | break; |
| 3499 | } |
| 3500 | case VerticalTileEdgeVirtualPixelMethod: |
| 3501 | { |
| 3502 | y_modulo=VirtualPixelModulo(y+v,cache_info->rows); |
| 3503 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method, |
cristy | 222528c | 2010-01-09 23:36:34 +0000 | [diff] [blame] | 3504 | EdgeX(x+u,cache_info->columns),y_modulo.remainder,1UL,1UL, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3505 | virtual_nexus[0],exception); |
| 3506 | break; |
| 3507 | } |
| 3508 | } |
| 3509 | if (p == (const PixelPacket *) NULL) |
| 3510 | break; |
| 3511 | *q++=(*p); |
| 3512 | if (indexes != (IndexPacket *) NULL) |
| 3513 | { |
| 3514 | nexus_indexes=GetVirtualIndexesFromNexus(cache_info, |
| 3515 | virtual_nexus[0]); |
| 3516 | if (nexus_indexes != (const IndexPacket *) NULL) |
| 3517 | *indexes++=(*nexus_indexes); |
| 3518 | } |
| 3519 | continue; |
| 3520 | } |
| 3521 | /* |
| 3522 | Transfer a run of pixels. |
| 3523 | */ |
| 3524 | p=GetVirtualPixelsFromNexus(image,virtual_pixel_method,x+u,y+v, |
| 3525 | (unsigned long) length,1UL,virtual_nexus[0],exception); |
| 3526 | if (p == (const PixelPacket *) NULL) |
| 3527 | break; |
| 3528 | (void) CopyMagickMemory(q,p,(size_t) length*sizeof(*p)); |
| 3529 | q+=length; |
| 3530 | if (indexes != (IndexPacket *) NULL) |
| 3531 | { |
| 3532 | nexus_indexes=GetVirtualIndexesFromNexus(cache_info,virtual_nexus[0]); |
| 3533 | if (nexus_indexes != (const IndexPacket *) NULL) |
| 3534 | { |
| 3535 | (void) CopyMagickMemory(indexes,nexus_indexes,(size_t) length* |
| 3536 | sizeof(*nexus_indexes)); |
| 3537 | indexes+=length; |
| 3538 | } |
| 3539 | } |
| 3540 | } |
| 3541 | } |
| 3542 | virtual_nexus=DestroyPixelCacheNexus(virtual_nexus,1); |
| 3543 | return(pixels); |
| 3544 | } |
| 3545 | |
| 3546 | /* |
| 3547 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3548 | % % |
| 3549 | % % |
| 3550 | % % |
| 3551 | + G e t V i r t u a l P i x e l C a c h e % |
| 3552 | % % |
| 3553 | % % |
| 3554 | % % |
| 3555 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3556 | % |
| 3557 | % GetVirtualPixelCache() get virtual pixels from the in-memory or disk pixel |
| 3558 | % cache as defined by the geometry parameters. A pointer to the pixels |
| 3559 | % is returned if the pixels are transferred, otherwise a NULL is returned. |
| 3560 | % |
| 3561 | % The format of the GetVirtualPixelCache() method is: |
| 3562 | % |
| 3563 | % const PixelPacket *GetVirtualPixelCache(const Image *image, |
| 3564 | % const VirtualPixelMethod virtual_pixel_method,const long x, |
| 3565 | % const long y,const unsigned long columns,const unsigned long rows, |
| 3566 | % ExceptionInfo *exception) |
| 3567 | % |
| 3568 | % A description of each parameter follows: |
| 3569 | % |
| 3570 | % o image: the image. |
| 3571 | % |
| 3572 | % o virtual_pixel_method: the virtual pixel method. |
| 3573 | % |
| 3574 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 3575 | % pixels. |
| 3576 | % |
| 3577 | % o exception: return any errors or warnings in this structure. |
| 3578 | % |
| 3579 | */ |
| 3580 | static const PixelPacket *GetVirtualPixelCache(const Image *image, |
| 3581 | const VirtualPixelMethod virtual_pixel_method,const long x,const long y, |
| 3582 | const unsigned long columns,const unsigned long rows,ExceptionInfo *exception) |
| 3583 | { |
| 3584 | CacheInfo |
| 3585 | *cache_info; |
| 3586 | |
| 3587 | const PixelPacket |
| 3588 | *pixels; |
| 3589 | |
| 3590 | long |
| 3591 | id; |
| 3592 | |
| 3593 | if (image->debug != MagickFalse) |
| 3594 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3595 | cache_info=(CacheInfo *) image->cache; |
| 3596 | id=GetOpenMPThreadId(); |
| 3597 | assert(id < (long) cache_info->number_threads); |
| 3598 | pixels=GetVirtualPixelsFromNexus(image,virtual_pixel_method,x,y,columns,rows, |
| 3599 | cache_info->nexus_info[id],exception); |
| 3600 | return(pixels); |
| 3601 | } |
| 3602 | |
| 3603 | /* |
| 3604 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3605 | % % |
| 3606 | % % |
| 3607 | % % |
| 3608 | % G e t V i r t u a l P i x e l Q u e u e % |
| 3609 | % % |
| 3610 | % % |
| 3611 | % % |
| 3612 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3613 | % |
| 3614 | % GetVirtualPixelQueue() returns the virtual pixels associated with the |
| 3615 | % last call to QueueAuthenticPixels() or GetVirtualPixels(). |
| 3616 | % |
| 3617 | % The format of the GetVirtualPixelQueue() method is: |
| 3618 | % |
| 3619 | % const PixelPacket *GetVirtualPixelQueue(const Image image) |
| 3620 | % |
| 3621 | % A description of each parameter follows: |
| 3622 | % |
| 3623 | % o image: the image. |
| 3624 | % |
| 3625 | */ |
| 3626 | MagickExport const PixelPacket *GetVirtualPixelQueue(const Image *image) |
| 3627 | { |
| 3628 | CacheInfo |
| 3629 | *cache_info; |
| 3630 | |
| 3631 | assert(image != (const Image *) NULL); |
| 3632 | assert(image->signature == MagickSignature); |
| 3633 | if (image->debug != MagickFalse) |
| 3634 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3635 | assert(image->cache != (Cache) NULL); |
| 3636 | cache_info=(CacheInfo *) image->cache; |
| 3637 | assert(cache_info->signature == MagickSignature); |
| 3638 | if (cache_info->methods.get_virtual_pixels_handler == |
| 3639 | (GetVirtualPixelsHandler) NULL) |
| 3640 | return((PixelPacket *) NULL); |
| 3641 | return(cache_info->methods.get_virtual_pixels_handler(image)); |
| 3642 | } |
| 3643 | |
| 3644 | /* |
| 3645 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3646 | % % |
| 3647 | % % |
| 3648 | % % |
| 3649 | % G e t V i r t u a l P i x e l s % |
| 3650 | % % |
| 3651 | % % |
| 3652 | % % |
| 3653 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3654 | % |
| 3655 | % GetVirtualPixels() returns an immutable pixel region. If the |
| 3656 | % region is successfully accessed, a pointer to it is returned, otherwise |
cristy | ad4e5b2 | 2010-01-10 00:04:19 +0000 | [diff] [blame] | 3657 | % NULL is returned. The returned pointer may point to a temporary working |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3658 | % copy of the pixels or it may point to the original pixels in memory. |
| 3659 | % Performance is maximized if the selected region is part of one row, or one |
| 3660 | % or more full rows, since there is opportunity to access the pixels in-place |
cristy | ad4e5b2 | 2010-01-10 00:04:19 +0000 | [diff] [blame] | 3661 | % (without a copy) if the image is in memory, or in a memory-mapped file. The |
| 3662 | % returned pointer must *never* be deallocated by the user. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3663 | % |
| 3664 | % Pixels accessed via the returned pointer represent a simple array of type |
| 3665 | % PixelPacket. If the image type is CMYK or the storage class is PseudoClass, |
| 3666 | % call GetAuthenticIndexQueue() after invoking GetAuthenticPixels() to access |
| 3667 | % the black color component or to obtain the colormap indexes (of type |
| 3668 | % IndexPacket) corresponding to the region. |
| 3669 | % |
| 3670 | % If you plan to modify the pixels, use GetAuthenticPixels() instead. |
| 3671 | % |
| 3672 | % Note, the GetVirtualPixels() and GetAuthenticPixels() methods are not thread- |
| 3673 | % safe. In a threaded environment, use GetCacheViewVirtualPixels() or |
| 3674 | % GetCacheViewAuthenticPixels() instead. |
| 3675 | % |
| 3676 | % The format of the GetVirtualPixels() method is: |
| 3677 | % |
| 3678 | % const PixelPacket *GetVirtualPixels(const Image *image,const long x, |
| 3679 | % const long y,const unsigned long columns,const unsigned long rows, |
| 3680 | % ExceptionInfo *exception) |
| 3681 | % |
| 3682 | % A description of each parameter follows: |
| 3683 | % |
| 3684 | % o image: the image. |
| 3685 | % |
| 3686 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 3687 | % pixels. |
| 3688 | % |
| 3689 | % o exception: return any errors or warnings in this structure. |
| 3690 | % |
| 3691 | */ |
| 3692 | MagickExport const PixelPacket *GetVirtualPixels(const Image *image, |
| 3693 | const long x,const long y,const unsigned long columns, |
| 3694 | const unsigned long rows,ExceptionInfo *exception) |
| 3695 | { |
| 3696 | CacheInfo |
| 3697 | *cache_info; |
| 3698 | |
| 3699 | const PixelPacket |
| 3700 | *pixels; |
| 3701 | |
| 3702 | assert(image != (const Image *) NULL); |
| 3703 | assert(image->signature == MagickSignature); |
| 3704 | if (image->debug != MagickFalse) |
| 3705 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3706 | assert(image->cache != (Cache) NULL); |
| 3707 | cache_info=(CacheInfo *) image->cache; |
| 3708 | assert(cache_info->signature == MagickSignature); |
| 3709 | if (cache_info->methods.get_virtual_pixel_handler == |
| 3710 | (GetVirtualPixelHandler) NULL) |
| 3711 | return((const PixelPacket *) NULL); |
| 3712 | pixels=cache_info->methods.get_virtual_pixel_handler(image, |
| 3713 | GetPixelCacheVirtualMethod(image),x,y,columns,rows,exception); |
| 3714 | return(pixels); |
| 3715 | } |
| 3716 | |
| 3717 | /* |
| 3718 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3719 | % % |
| 3720 | % % |
| 3721 | % % |
| 3722 | + 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 % |
| 3723 | % % |
| 3724 | % % |
| 3725 | % % |
| 3726 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3727 | % |
| 3728 | % GetVirtualPixelsCache() returns the pixels associated with the last call |
| 3729 | % to QueueAuthenticPixelsCache() or GetVirtualPixelCache(). |
| 3730 | % |
| 3731 | % The format of the GetVirtualPixelsCache() method is: |
| 3732 | % |
| 3733 | % PixelPacket *GetVirtualPixelsCache(const Image *image) |
| 3734 | % |
| 3735 | % A description of each parameter follows: |
| 3736 | % |
| 3737 | % o image: the image. |
| 3738 | % |
| 3739 | */ |
| 3740 | static const PixelPacket *GetVirtualPixelsCache(const Image *image) |
| 3741 | { |
| 3742 | CacheInfo |
| 3743 | *cache_info; |
| 3744 | |
| 3745 | const PixelPacket |
| 3746 | *pixels; |
| 3747 | |
| 3748 | long |
| 3749 | id; |
| 3750 | |
| 3751 | if (image->debug != MagickFalse) |
| 3752 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3753 | cache_info=(CacheInfo *) image->cache; |
| 3754 | id=GetOpenMPThreadId(); |
| 3755 | assert(id < (long) cache_info->number_threads); |
| 3756 | pixels=GetVirtualPixelsNexus(image->cache,cache_info->nexus_info[id]); |
| 3757 | return(pixels); |
| 3758 | } |
| 3759 | |
| 3760 | /* |
| 3761 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3762 | % % |
| 3763 | % % |
| 3764 | % % |
| 3765 | + G e t V i r t u a l P i x e l s N e x u s % |
| 3766 | % % |
| 3767 | % % |
| 3768 | % % |
| 3769 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3770 | % |
| 3771 | % GetVirtualPixelsNexus() returns the pixels associated with the specified |
| 3772 | % cache nexus. |
| 3773 | % |
| 3774 | % The format of the GetVirtualPixelsNexus() method is: |
| 3775 | % |
| 3776 | % const IndexPacket *GetVirtualPixelsNexus(const Cache cache, |
| 3777 | % NexusInfo *nexus_info) |
| 3778 | % |
| 3779 | % A description of each parameter follows: |
| 3780 | % |
| 3781 | % o cache: the pixel cache. |
| 3782 | % |
| 3783 | % o nexus_info: the cache nexus to return the colormap pixels. |
| 3784 | % |
| 3785 | */ |
| 3786 | MagickExport const PixelPacket *GetVirtualPixelsNexus(const Cache cache, |
| 3787 | NexusInfo *nexus_info) |
| 3788 | { |
| 3789 | CacheInfo |
| 3790 | *cache_info; |
| 3791 | |
| 3792 | if (cache == (Cache) NULL) |
| 3793 | return((PixelPacket *) NULL); |
| 3794 | cache_info=(CacheInfo *) cache; |
| 3795 | assert(cache_info->signature == MagickSignature); |
| 3796 | if (cache_info->storage_class == UndefinedClass) |
| 3797 | return((PixelPacket *) NULL); |
| 3798 | return((const PixelPacket *) nexus_info->pixels); |
| 3799 | } |
| 3800 | |
| 3801 | /* |
| 3802 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3803 | % % |
| 3804 | % % |
| 3805 | % % |
| 3806 | + M a s k P i x e l C a c h e N e x u s % |
| 3807 | % % |
| 3808 | % % |
| 3809 | % % |
| 3810 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3811 | % |
| 3812 | % MaskPixelCacheNexus() masks the cache nexus as defined by the image mask. |
| 3813 | % The method returns MagickTrue if the pixel region is masked, otherwise |
| 3814 | % MagickFalse. |
| 3815 | % |
| 3816 | % The format of the MaskPixelCacheNexus() method is: |
| 3817 | % |
| 3818 | % MagickBooleanType MaskPixelCacheNexus(Image *image, |
| 3819 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 3820 | % |
| 3821 | % A description of each parameter follows: |
| 3822 | % |
| 3823 | % o image: the image. |
| 3824 | % |
| 3825 | % o nexus_info: the cache nexus to clip. |
| 3826 | % |
| 3827 | % o exception: return any errors or warnings in this structure. |
| 3828 | % |
| 3829 | */ |
| 3830 | |
| 3831 | static inline void MagickPixelCompositeMask(const MagickPixelPacket *p, |
| 3832 | const MagickRealType alpha,const MagickPixelPacket *q, |
| 3833 | const MagickRealType beta,MagickPixelPacket *composite) |
| 3834 | { |
| 3835 | MagickRealType |
| 3836 | gamma; |
| 3837 | |
| 3838 | if (alpha == TransparentOpacity) |
| 3839 | { |
| 3840 | *composite=(*q); |
| 3841 | return; |
| 3842 | } |
| 3843 | gamma=1.0-QuantumScale*QuantumScale*alpha*beta; |
| 3844 | gamma=1.0/(gamma <= MagickEpsilon ? 1.0 : gamma); |
| 3845 | composite->red=gamma*MagickOver_(p->red,alpha,q->red,beta); |
| 3846 | composite->green=gamma*MagickOver_(p->green,alpha,q->green,beta); |
| 3847 | composite->blue=gamma*MagickOver_(p->blue,alpha,q->blue,beta); |
| 3848 | if ((p->colorspace == CMYKColorspace) && (q->colorspace == CMYKColorspace)) |
| 3849 | composite->index=gamma*MagickOver_(p->index,alpha,q->index,beta); |
| 3850 | } |
| 3851 | |
| 3852 | static MagickBooleanType MaskPixelCacheNexus(Image *image,NexusInfo *nexus_info, |
| 3853 | ExceptionInfo *exception) |
| 3854 | { |
| 3855 | CacheInfo |
| 3856 | *cache_info; |
| 3857 | |
| 3858 | MagickPixelPacket |
| 3859 | alpha, |
| 3860 | beta; |
| 3861 | |
| 3862 | MagickSizeType |
| 3863 | number_pixels; |
| 3864 | |
| 3865 | NexusInfo |
| 3866 | **clip_nexus, |
| 3867 | **image_nexus; |
| 3868 | |
| 3869 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3870 | *restrict r; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3871 | |
| 3872 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3873 | *restrict nexus_indexes, |
| 3874 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3875 | |
| 3876 | register long |
| 3877 | i; |
| 3878 | |
| 3879 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3880 | *restrict p, |
| 3881 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3882 | |
| 3883 | /* |
| 3884 | Apply clip mask. |
| 3885 | */ |
| 3886 | if (image->debug != MagickFalse) |
| 3887 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3888 | if (image->mask == (Image *) NULL) |
| 3889 | return(MagickFalse); |
| 3890 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickTrue,exception); |
| 3891 | if (cache_info == (Cache) NULL) |
| 3892 | return(MagickFalse); |
| 3893 | image_nexus=AcquirePixelCacheNexus(1); |
| 3894 | clip_nexus=AcquirePixelCacheNexus(1); |
| 3895 | if ((image_nexus == (NexusInfo **) NULL) || |
| 3896 | (clip_nexus == (NexusInfo **) NULL)) |
| 3897 | ThrowBinaryException(CacheError,"UnableToGetCacheNexus",image->filename); |
cristy | 09449f7 | 2010-01-23 03:08:36 +0000 | [diff] [blame] | 3898 | p=GetAuthenticPixelCacheNexus(image,nexus_info->region.x, |
| 3899 | nexus_info->region.y,nexus_info->region.width,nexus_info->region.height, |
| 3900 | image_nexus[0],exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3901 | indexes=GetPixelCacheNexusIndexes(image->cache,image_nexus[0]); |
| 3902 | q=nexus_info->pixels; |
| 3903 | nexus_indexes=nexus_info->indexes; |
| 3904 | r=GetVirtualPixelsFromNexus(image->mask,MaskVirtualPixelMethod, |
| 3905 | nexus_info->region.x,nexus_info->region.y,nexus_info->region.width, |
| 3906 | nexus_info->region.height,clip_nexus[0],&image->exception); |
| 3907 | GetMagickPixelPacket(image,&alpha); |
| 3908 | GetMagickPixelPacket(image,&beta); |
| 3909 | number_pixels=(MagickSizeType) nexus_info->region.width* |
| 3910 | nexus_info->region.height; |
| 3911 | for (i=0; i < (long) number_pixels; i++) |
| 3912 | { |
| 3913 | if ((p == (PixelPacket *) NULL) || (r == (const PixelPacket *) NULL)) |
| 3914 | break; |
| 3915 | SetMagickPixelPacket(image,p,indexes+i,&alpha); |
| 3916 | SetMagickPixelPacket(image,q,nexus_indexes+i,&beta); |
| 3917 | MagickPixelCompositeMask(&beta,(MagickRealType) PixelIntensityToQuantum(r), |
| 3918 | &alpha,alpha.opacity,&beta); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3919 | q->red=ClampToQuantum(beta.red); |
| 3920 | q->green=ClampToQuantum(beta.green); |
| 3921 | q->blue=ClampToQuantum(beta.blue); |
| 3922 | q->opacity=ClampToQuantum(beta.opacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3923 | if (cache_info->active_index_channel != MagickFalse) |
| 3924 | nexus_indexes[i]=indexes[i]; |
| 3925 | p++; |
| 3926 | q++; |
| 3927 | r++; |
| 3928 | } |
| 3929 | clip_nexus=DestroyPixelCacheNexus(clip_nexus,1); |
| 3930 | image_nexus=DestroyPixelCacheNexus(image_nexus,1); |
| 3931 | if (i < (long) number_pixels) |
| 3932 | return(MagickFalse); |
| 3933 | return(MagickTrue); |
| 3934 | } |
| 3935 | |
| 3936 | /* |
| 3937 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3938 | % % |
| 3939 | % % |
| 3940 | % % |
| 3941 | + O p e n P i x e l C a c h e % |
| 3942 | % % |
| 3943 | % % |
| 3944 | % % |
| 3945 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3946 | % |
| 3947 | % OpenPixelCache() allocates the pixel cache. This includes defining the cache |
| 3948 | % dimensions, allocating space for the image pixels and optionally the |
| 3949 | % colormap indexes, and memory mapping the cache if it is disk based. The |
| 3950 | % cache nexus array is initialized as well. |
| 3951 | % |
| 3952 | % The format of the OpenPixelCache() method is: |
| 3953 | % |
| 3954 | % MagickBooleanType OpenPixelCache(Image *image,const MapMode mode, |
| 3955 | % ExceptionInfo *exception) |
| 3956 | % |
| 3957 | % A description of each parameter follows: |
| 3958 | % |
| 3959 | % o image: the image. |
| 3960 | % |
| 3961 | % o mode: ReadMode, WriteMode, or IOMode. |
| 3962 | % |
| 3963 | % o exception: return any errors or warnings in this structure. |
| 3964 | % |
| 3965 | */ |
| 3966 | |
cristy | d43a46b | 2010-01-21 02:13:41 +0000 | [diff] [blame] | 3967 | static inline void AllocatePixelCachePixels(CacheInfo *cache_info) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3968 | { |
| 3969 | cache_info->mapped=MagickFalse; |
| 3970 | cache_info->pixels=(PixelPacket *) AcquireMagickMemory((size_t) |
| 3971 | cache_info->length); |
| 3972 | if (cache_info->pixels == (PixelPacket *) NULL) |
| 3973 | { |
| 3974 | cache_info->mapped=MagickTrue; |
| 3975 | cache_info->pixels=(PixelPacket *) MapBlob(-1,IOMode,0,(size_t) |
| 3976 | cache_info->length); |
| 3977 | } |
| 3978 | } |
| 3979 | |
| 3980 | static MagickBooleanType ExtendCache(Image *image,MagickSizeType length) |
| 3981 | { |
| 3982 | CacheInfo |
| 3983 | *cache_info; |
| 3984 | |
| 3985 | MagickOffsetType |
| 3986 | count, |
| 3987 | extent, |
| 3988 | offset; |
| 3989 | |
| 3990 | cache_info=(CacheInfo *) image->cache; |
| 3991 | if (image->debug != MagickFalse) |
| 3992 | { |
| 3993 | char |
| 3994 | format[MaxTextExtent], |
| 3995 | message[MaxTextExtent]; |
| 3996 | |
cristy | b9080c9 | 2009-12-01 20:13:26 +0000 | [diff] [blame] | 3997 | (void) FormatMagickSize(length,MagickFalse,format); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3998 | (void) FormatMagickString(message,MaxTextExtent, |
| 3999 | "extend %s (%s[%d], disk, %s)",cache_info->filename, |
| 4000 | cache_info->cache_filename,cache_info->file,format); |
| 4001 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s",message); |
| 4002 | } |
| 4003 | if (length != (MagickSizeType) ((MagickOffsetType) length)) |
| 4004 | return(MagickFalse); |
| 4005 | extent=(MagickOffsetType) MagickSeek(cache_info->file,0,SEEK_END); |
| 4006 | if (extent < 0) |
| 4007 | return(MagickFalse); |
| 4008 | if ((MagickSizeType) extent >= length) |
| 4009 | return(MagickTrue); |
| 4010 | offset=(MagickOffsetType) length-1; |
| 4011 | count=WritePixelCacheRegion(cache_info,offset,1,(const unsigned char *) ""); |
| 4012 | return(count == (MagickOffsetType) 1 ? MagickTrue : MagickFalse); |
| 4013 | } |
| 4014 | |
| 4015 | static MagickBooleanType OpenPixelCache(Image *image,const MapMode mode, |
| 4016 | ExceptionInfo *exception) |
| 4017 | { |
| 4018 | char |
| 4019 | format[MaxTextExtent], |
| 4020 | message[MaxTextExtent]; |
| 4021 | |
| 4022 | CacheInfo |
| 4023 | *cache_info, |
| 4024 | source_info; |
| 4025 | |
| 4026 | MagickSizeType |
| 4027 | length, |
| 4028 | number_pixels; |
| 4029 | |
| 4030 | MagickStatusType |
| 4031 | status; |
| 4032 | |
| 4033 | size_t |
| 4034 | packet_size; |
| 4035 | |
| 4036 | unsigned long |
| 4037 | columns; |
| 4038 | |
| 4039 | if (image->debug != MagickFalse) |
| 4040 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4041 | if ((image->columns == 0) || (image->rows == 0)) |
| 4042 | ThrowBinaryException(CacheError,"NoPixelsDefinedInCache",image->filename); |
| 4043 | cache_info=(CacheInfo *) image->cache; |
| 4044 | source_info=(*cache_info); |
| 4045 | source_info.file=(-1); |
| 4046 | (void) FormatMagickString(cache_info->filename,MaxTextExtent,"%s[%ld]", |
| 4047 | image->filename,GetImageIndexInList(image)); |
cristy | 87528ea | 2009-09-10 14:53:56 +0000 | [diff] [blame] | 4048 | cache_info->mode=mode; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4049 | cache_info->rows=image->rows; |
| 4050 | cache_info->columns=image->columns; |
| 4051 | cache_info->active_index_channel=((image->storage_class == PseudoClass) || |
| 4052 | (image->colorspace == CMYKColorspace)) ? MagickTrue : MagickFalse; |
| 4053 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 4054 | packet_size=sizeof(PixelPacket); |
| 4055 | if (cache_info->active_index_channel != MagickFalse) |
| 4056 | packet_size+=sizeof(IndexPacket); |
| 4057 | length=number_pixels*packet_size; |
| 4058 | columns=(unsigned long) (length/cache_info->rows/packet_size); |
| 4059 | if (cache_info->columns != columns) |
| 4060 | ThrowBinaryException(ResourceLimitError,"PixelCacheAllocationFailed", |
| 4061 | image->filename); |
| 4062 | cache_info->length=length; |
| 4063 | status=AcquireMagickResource(AreaResource,cache_info->length); |
| 4064 | length=number_pixels*(sizeof(PixelPacket)+sizeof(IndexPacket)); |
| 4065 | if ((status != MagickFalse) && (length == (MagickSizeType) ((size_t) length))) |
| 4066 | { |
| 4067 | status=AcquireMagickResource(MemoryResource,cache_info->length); |
| 4068 | if (((cache_info->type == UndefinedCache) && (status != MagickFalse)) || |
| 4069 | (cache_info->type == MemoryCache)) |
| 4070 | { |
cristy | d43a46b | 2010-01-21 02:13:41 +0000 | [diff] [blame] | 4071 | AllocatePixelCachePixels(cache_info); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4072 | if (cache_info->pixels == (PixelPacket *) NULL) |
| 4073 | cache_info->pixels=source_info.pixels; |
| 4074 | else |
| 4075 | { |
| 4076 | /* |
| 4077 | Create memory pixel cache. |
| 4078 | */ |
| 4079 | if (image->debug != MagickFalse) |
| 4080 | { |
cristy | 97e7a57 | 2009-12-05 15:07:53 +0000 | [diff] [blame] | 4081 | (void) FormatMagickSize(cache_info->length,MagickTrue, |
cristy | b9080c9 | 2009-12-01 20:13:26 +0000 | [diff] [blame] | 4082 | format); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4083 | (void) FormatMagickString(message,MaxTextExtent, |
| 4084 | "open %s (%s memory, %lux%lu %s)",cache_info->filename, |
| 4085 | cache_info->mapped != MagickFalse ? "anonymous" : "heap", |
| 4086 | cache_info->columns,cache_info->rows,format); |
| 4087 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s", |
| 4088 | message); |
| 4089 | } |
| 4090 | cache_info->storage_class=image->storage_class; |
| 4091 | cache_info->colorspace=image->colorspace; |
| 4092 | cache_info->type=MemoryCache; |
| 4093 | cache_info->indexes=(IndexPacket *) NULL; |
| 4094 | if (cache_info->active_index_channel != MagickFalse) |
| 4095 | cache_info->indexes=(IndexPacket *) (cache_info->pixels+ |
| 4096 | number_pixels); |
| 4097 | if (source_info.storage_class != UndefinedClass) |
| 4098 | { |
| 4099 | status|=ClonePixelCachePixels(cache_info,&source_info, |
| 4100 | exception); |
| 4101 | RelinquishPixelCachePixels(&source_info); |
| 4102 | } |
| 4103 | return(MagickTrue); |
| 4104 | } |
| 4105 | } |
| 4106 | RelinquishMagickResource(MemoryResource,cache_info->length); |
| 4107 | } |
| 4108 | /* |
| 4109 | Create pixel cache on disk. |
| 4110 | */ |
| 4111 | status=AcquireMagickResource(DiskResource,cache_info->length); |
| 4112 | if (status == MagickFalse) |
| 4113 | { |
| 4114 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 4115 | "CacheResourcesExhausted","`%s'",image->filename); |
| 4116 | return(MagickFalse); |
| 4117 | } |
| 4118 | if (OpenPixelCacheOnDisk(cache_info,mode) == MagickFalse) |
| 4119 | { |
| 4120 | RelinquishMagickResource(DiskResource,cache_info->length); |
| 4121 | ThrowFileException(exception,CacheError,"UnableToOpenPixelCache", |
| 4122 | image->filename); |
| 4123 | return(MagickFalse); |
| 4124 | } |
| 4125 | status=ExtendCache(image,(MagickSizeType) cache_info->offset+ |
| 4126 | cache_info->length); |
| 4127 | if (status == MagickFalse) |
| 4128 | { |
| 4129 | ThrowFileException(exception,CacheError,"UnableToExtendCache", |
| 4130 | image->filename); |
| 4131 | return(MagickFalse); |
| 4132 | } |
| 4133 | cache_info->storage_class=image->storage_class; |
| 4134 | cache_info->colorspace=image->colorspace; |
| 4135 | length=number_pixels*(sizeof(PixelPacket)+sizeof(IndexPacket)); |
| 4136 | status=AcquireMagickResource(AreaResource,cache_info->length); |
| 4137 | if ((status == MagickFalse) || (length != (MagickSizeType) ((size_t) length))) |
| 4138 | cache_info->type=DiskCache; |
| 4139 | else |
| 4140 | { |
| 4141 | status=AcquireMagickResource(MapResource,cache_info->length); |
| 4142 | if ((status == MagickFalse) && (cache_info->type != MapCache) && |
| 4143 | (cache_info->type != MemoryCache)) |
| 4144 | cache_info->type=DiskCache; |
| 4145 | else |
| 4146 | { |
| 4147 | cache_info->pixels=(PixelPacket *) MapBlob(cache_info->file,mode, |
| 4148 | cache_info->offset,(size_t) cache_info->length); |
| 4149 | if (cache_info->pixels == (PixelPacket *) NULL) |
| 4150 | { |
| 4151 | cache_info->pixels=source_info.pixels; |
| 4152 | cache_info->type=DiskCache; |
| 4153 | } |
| 4154 | else |
| 4155 | { |
| 4156 | /* |
| 4157 | Create file-backed memory-mapped pixel cache. |
| 4158 | */ |
| 4159 | (void) ClosePixelCacheOnDisk(cache_info); |
| 4160 | cache_info->type=MapCache; |
| 4161 | cache_info->mapped=MagickTrue; |
| 4162 | cache_info->indexes=(IndexPacket *) NULL; |
| 4163 | if (cache_info->active_index_channel != MagickFalse) |
| 4164 | cache_info->indexes=(IndexPacket *) (cache_info->pixels+ |
| 4165 | number_pixels); |
| 4166 | if ((source_info.type != UndefinedCache) && (mode != ReadMode)) |
| 4167 | { |
| 4168 | status=ClonePixelCachePixels(cache_info,&source_info, |
| 4169 | exception); |
| 4170 | RelinquishPixelCachePixels(&source_info); |
| 4171 | } |
| 4172 | if (image->debug != MagickFalse) |
| 4173 | { |
cristy | 97e7a57 | 2009-12-05 15:07:53 +0000 | [diff] [blame] | 4174 | (void) FormatMagickSize(cache_info->length,MagickTrue, |
cristy | b9080c9 | 2009-12-01 20:13:26 +0000 | [diff] [blame] | 4175 | format); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4176 | (void) FormatMagickString(message,MaxTextExtent, |
| 4177 | "open %s (%s[%d], memory-mapped, %lux%lu %s)", |
| 4178 | cache_info->filename,cache_info->cache_filename, |
| 4179 | cache_info->file,cache_info->columns,cache_info->rows, |
| 4180 | format); |
| 4181 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s", |
| 4182 | message); |
| 4183 | } |
| 4184 | return(MagickTrue); |
| 4185 | } |
| 4186 | } |
| 4187 | RelinquishMagickResource(MapResource,cache_info->length); |
| 4188 | } |
| 4189 | if ((source_info.type != UndefinedCache) && (mode != ReadMode)) |
| 4190 | { |
| 4191 | status=ClonePixelCachePixels(cache_info,&source_info,exception); |
| 4192 | RelinquishPixelCachePixels(&source_info); |
| 4193 | } |
| 4194 | if (image->debug != MagickFalse) |
| 4195 | { |
cristy | b9080c9 | 2009-12-01 20:13:26 +0000 | [diff] [blame] | 4196 | (void) FormatMagickSize(cache_info->length,MagickFalse,format); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4197 | (void) FormatMagickString(message,MaxTextExtent, |
| 4198 | "open %s (%s[%d], disk, %lux%lu %s)",cache_info->filename, |
| 4199 | cache_info->cache_filename,cache_info->file,cache_info->columns, |
| 4200 | cache_info->rows,format); |
| 4201 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s",message); |
| 4202 | } |
| 4203 | return(MagickTrue); |
| 4204 | } |
| 4205 | |
| 4206 | /* |
| 4207 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4208 | % % |
| 4209 | % % |
| 4210 | % % |
| 4211 | + P e r s i s t P i x e l C a c h e % |
| 4212 | % % |
| 4213 | % % |
| 4214 | % % |
| 4215 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4216 | % |
| 4217 | % PersistPixelCache() attaches to or initializes a persistent pixel cache. A |
| 4218 | % persistent pixel cache is one that resides on disk and is not destroyed |
| 4219 | % when the program exits. |
| 4220 | % |
| 4221 | % The format of the PersistPixelCache() method is: |
| 4222 | % |
| 4223 | % MagickBooleanType PersistPixelCache(Image *image,const char *filename, |
| 4224 | % const MagickBooleanType attach,MagickOffsetType *offset, |
| 4225 | % ExceptionInfo *exception) |
| 4226 | % |
| 4227 | % A description of each parameter follows: |
| 4228 | % |
| 4229 | % o image: the image. |
| 4230 | % |
| 4231 | % o filename: the persistent pixel cache filename. |
| 4232 | % |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame] | 4233 | % o attach: A value other than zero initializes the persistent pixel |
| 4234 | % cache. |
| 4235 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4236 | % o initialize: A value other than zero initializes the persistent pixel |
| 4237 | % cache. |
| 4238 | % |
| 4239 | % o offset: the offset in the persistent cache to store pixels. |
| 4240 | % |
| 4241 | % o exception: return any errors or warnings in this structure. |
| 4242 | % |
| 4243 | */ |
| 4244 | MagickExport MagickBooleanType PersistPixelCache(Image *image, |
| 4245 | const char *filename,const MagickBooleanType attach,MagickOffsetType *offset, |
| 4246 | ExceptionInfo *exception) |
| 4247 | { |
| 4248 | CacheInfo |
| 4249 | *cache_info, |
| 4250 | *clone_info; |
| 4251 | |
| 4252 | Image |
| 4253 | clone_image; |
| 4254 | |
| 4255 | long |
cristy | 688f07b | 2009-09-27 15:19:13 +0000 | [diff] [blame] | 4256 | page_size; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4257 | |
| 4258 | MagickBooleanType |
| 4259 | status; |
| 4260 | |
| 4261 | assert(image != (Image *) NULL); |
| 4262 | assert(image->signature == MagickSignature); |
| 4263 | if (image->debug != MagickFalse) |
| 4264 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4265 | assert(image->cache != (void *) NULL); |
| 4266 | assert(filename != (const char *) NULL); |
| 4267 | assert(offset != (MagickOffsetType *) NULL); |
cristy | 688f07b | 2009-09-27 15:19:13 +0000 | [diff] [blame] | 4268 | page_size=GetMagickPageSize(); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4269 | cache_info=(CacheInfo *) image->cache; |
| 4270 | assert(cache_info->signature == MagickSignature); |
| 4271 | if (attach != MagickFalse) |
| 4272 | { |
| 4273 | /* |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame] | 4274 | Attach existing persistent pixel cache. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4275 | */ |
| 4276 | if (image->debug != MagickFalse) |
| 4277 | (void) LogMagickEvent(CacheEvent,GetMagickModule(), |
| 4278 | "attach persistent cache"); |
| 4279 | (void) CopyMagickString(cache_info->cache_filename,filename, |
| 4280 | MaxTextExtent); |
| 4281 | cache_info->type=DiskCache; |
| 4282 | cache_info->offset=(*offset); |
| 4283 | if (OpenPixelCache(image,ReadMode,exception) == MagickFalse) |
| 4284 | return(MagickFalse); |
cristy | 688f07b | 2009-09-27 15:19:13 +0000 | [diff] [blame] | 4285 | *offset+=cache_info->length+page_size-(cache_info->length % page_size); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4286 | return(MagickTrue); |
| 4287 | } |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame] | 4288 | if ((cache_info->mode != ReadMode) && (cache_info->type != MemoryCache) && |
| 4289 | (cache_info->reference_count == 1)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4290 | { |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 4291 | LockSemaphoreInfo(cache_info->semaphore); |
cristy | 09449f7 | 2010-01-23 03:08:36 +0000 | [diff] [blame] | 4292 | if ((cache_info->mode != ReadMode) && |
| 4293 | (cache_info->type != MemoryCache) && |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4294 | (cache_info->reference_count == 1)) |
| 4295 | { |
| 4296 | int |
| 4297 | status; |
| 4298 | |
| 4299 | /* |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame] | 4300 | Usurp existing persistent pixel cache. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4301 | */ |
| 4302 | status=rename(cache_info->cache_filename,filename); |
| 4303 | if (status == 0) |
| 4304 | { |
| 4305 | (void) CopyMagickString(cache_info->cache_filename,filename, |
| 4306 | MaxTextExtent); |
cristy | 688f07b | 2009-09-27 15:19:13 +0000 | [diff] [blame] | 4307 | *offset+=cache_info->length+page_size-(cache_info->length % |
| 4308 | page_size); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 4309 | UnlockSemaphoreInfo(cache_info->semaphore); |
cristy | 87528ea | 2009-09-10 14:53:56 +0000 | [diff] [blame] | 4310 | cache_info=(CacheInfo *) ReferencePixelCache(cache_info); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4311 | if (image->debug != MagickFalse) |
| 4312 | (void) LogMagickEvent(CacheEvent,GetMagickModule(), |
| 4313 | "Usurp resident persistent cache"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4314 | return(MagickTrue); |
| 4315 | } |
| 4316 | } |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 4317 | UnlockSemaphoreInfo(cache_info->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4318 | } |
| 4319 | /* |
cristy | 01b7eb0 | 2009-09-10 23:10:14 +0000 | [diff] [blame] | 4320 | Clone persistent pixel cache. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4321 | */ |
| 4322 | clone_image=(*image); |
| 4323 | clone_info=(CacheInfo *) clone_image.cache; |
| 4324 | image->cache=ClonePixelCache(cache_info); |
| 4325 | cache_info=(CacheInfo *) ReferencePixelCache(image->cache); |
| 4326 | (void) CopyMagickString(cache_info->cache_filename,filename,MaxTextExtent); |
| 4327 | cache_info->type=DiskCache; |
| 4328 | cache_info->offset=(*offset); |
| 4329 | cache_info=(CacheInfo *) image->cache; |
| 4330 | status=ClonePixelCacheNexus(cache_info,clone_info,exception); |
| 4331 | if (status != MagickFalse) |
| 4332 | { |
| 4333 | status=OpenPixelCache(image,IOMode,exception); |
| 4334 | if (status != MagickFalse) |
| 4335 | status=ClonePixelCachePixels(cache_info,clone_info,&image->exception); |
| 4336 | } |
cristy | 688f07b | 2009-09-27 15:19:13 +0000 | [diff] [blame] | 4337 | *offset+=cache_info->length+page_size-(cache_info->length % page_size); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4338 | clone_info=(CacheInfo *) DestroyPixelCache(clone_info); |
| 4339 | return(status); |
| 4340 | } |
| 4341 | |
| 4342 | /* |
| 4343 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4344 | % % |
| 4345 | % % |
| 4346 | % % |
| 4347 | + Q u e u e A u t h e n t i c N e x u s % |
| 4348 | % % |
| 4349 | % % |
| 4350 | % % |
| 4351 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4352 | % |
| 4353 | % QueueAuthenticNexus() allocates an region to store image pixels as defined |
| 4354 | % by the region rectangle and returns a pointer to the region. This region is |
| 4355 | % subsequently transferred from the pixel cache with |
| 4356 | % SyncAuthenticPixelsCache(). A pointer to the pixels is returned if the |
| 4357 | % pixels are transferred, otherwise a NULL is returned. |
| 4358 | % |
| 4359 | % The format of the QueueAuthenticNexus() method is: |
| 4360 | % |
| 4361 | % PixelPacket *QueueAuthenticNexus(Image *image,const long x,const long y, |
| 4362 | % const unsigned long columns,const unsigned long rows, |
| 4363 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4364 | % |
| 4365 | % A description of each parameter follows: |
| 4366 | % |
| 4367 | % o image: the image. |
| 4368 | % |
| 4369 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 4370 | % pixels. |
| 4371 | % |
| 4372 | % o nexus_info: the cache nexus to set. |
| 4373 | % |
| 4374 | % o exception: return any errors or warnings in this structure. |
| 4375 | % |
| 4376 | */ |
| 4377 | MagickExport PixelPacket *QueueAuthenticNexus(Image *image,const long x, |
| 4378 | const long y,const unsigned long columns,const unsigned long rows, |
| 4379 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4380 | { |
| 4381 | CacheInfo |
| 4382 | *cache_info; |
| 4383 | |
| 4384 | MagickOffsetType |
| 4385 | offset; |
| 4386 | |
| 4387 | MagickSizeType |
| 4388 | number_pixels; |
| 4389 | |
| 4390 | RectangleInfo |
| 4391 | region; |
| 4392 | |
| 4393 | /* |
| 4394 | Validate pixel cache geometry. |
| 4395 | */ |
| 4396 | cache_info=(CacheInfo *) image->cache; |
| 4397 | if ((cache_info->columns == 0) && (cache_info->rows == 0)) |
| 4398 | { |
| 4399 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 4400 | "NoPixelsDefinedInCache","`%s'",image->filename); |
| 4401 | return((PixelPacket *) NULL); |
| 4402 | } |
| 4403 | if ((x < 0) || (y < 0) || (x >= (long) cache_info->columns) || |
| 4404 | (y >= (long) cache_info->rows)) |
| 4405 | { |
| 4406 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
| 4407 | "PixelsAreNotAuthentic","`%s'",image->filename); |
| 4408 | return((PixelPacket *) NULL); |
| 4409 | } |
| 4410 | offset=(MagickOffsetType) y*cache_info->columns+x; |
| 4411 | if (offset < 0) |
| 4412 | return((PixelPacket *) NULL); |
| 4413 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 4414 | offset+=(MagickOffsetType) (rows-1)*cache_info->columns+columns-1; |
| 4415 | if ((MagickSizeType) offset >= number_pixels) |
| 4416 | return((PixelPacket *) NULL); |
| 4417 | /* |
| 4418 | Return pixel cache. |
| 4419 | */ |
| 4420 | region.x=x; |
| 4421 | region.y=y; |
| 4422 | region.width=columns; |
| 4423 | region.height=rows; |
| 4424 | return(SetPixelCacheNexusPixels(image,®ion,nexus_info,exception)); |
| 4425 | } |
| 4426 | |
| 4427 | /* |
| 4428 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4429 | % % |
| 4430 | % % |
| 4431 | % % |
| 4432 | + 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 % |
| 4433 | % % |
| 4434 | % % |
| 4435 | % % |
| 4436 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4437 | % |
| 4438 | % QueueAuthenticPixelsCache() allocates an region to store image pixels as |
| 4439 | % defined by the region rectangle and returns a pointer to the region. This |
| 4440 | % region is subsequently transferred from the pixel cache with |
| 4441 | % SyncAuthenticPixelsCache(). A pointer to the pixels is returned if the |
| 4442 | % pixels are transferred, otherwise a NULL is returned. |
| 4443 | % |
| 4444 | % The format of the QueueAuthenticPixelsCache() method is: |
| 4445 | % |
| 4446 | % PixelPacket *QueueAuthenticPixelsCache(Image *image,const long x, |
| 4447 | % const long y,const unsigned long columns,const unsigned long rows, |
| 4448 | % ExceptionInfo *exception) |
| 4449 | % |
| 4450 | % A description of each parameter follows: |
| 4451 | % |
| 4452 | % o image: the image. |
| 4453 | % |
| 4454 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 4455 | % pixels. |
| 4456 | % |
| 4457 | % o exception: return any errors or warnings in this structure. |
| 4458 | % |
| 4459 | */ |
| 4460 | static PixelPacket *QueueAuthenticPixelsCache(Image *image,const long x, |
| 4461 | const long y,const unsigned long columns,const unsigned long rows, |
| 4462 | ExceptionInfo *exception) |
| 4463 | { |
| 4464 | CacheInfo |
| 4465 | *cache_info; |
| 4466 | |
| 4467 | long |
| 4468 | id; |
| 4469 | |
| 4470 | PixelPacket |
| 4471 | *pixels; |
| 4472 | |
| 4473 | cache_info=(CacheInfo *) GetImagePixelCache(image,MagickFalse,exception); |
| 4474 | if (cache_info == (Cache) NULL) |
| 4475 | return((PixelPacket *) NULL); |
| 4476 | id=GetOpenMPThreadId(); |
| 4477 | assert(id < (long) cache_info->number_threads); |
| 4478 | pixels=QueueAuthenticNexus(image,x,y,columns,rows,cache_info->nexus_info[id], |
| 4479 | exception); |
| 4480 | return(pixels); |
| 4481 | } |
| 4482 | |
| 4483 | /* |
| 4484 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4485 | % % |
| 4486 | % % |
| 4487 | % % |
| 4488 | % Q u e u e A u t h e n t i c P i x e l s % |
| 4489 | % % |
| 4490 | % % |
| 4491 | % % |
| 4492 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4493 | % |
| 4494 | % QueueAuthenticPixels() queues a mutable pixel region. If the region is |
| 4495 | % successfully intialized a pointer to a PixelPacket array representing the |
| 4496 | % region is returned, otherwise NULL is returned. The returned pointer may |
| 4497 | % point to a temporary working buffer for the pixels or it may point to the |
| 4498 | % final location of the pixels in memory. |
| 4499 | % |
| 4500 | % Write-only access means that any existing pixel values corresponding to |
| 4501 | % the region are ignored. This is useful if the initial image is being |
| 4502 | % created from scratch, or if the existing pixel values are to be |
| 4503 | % completely replaced without need to refer to their pre-existing values. |
| 4504 | % The application is free to read and write the pixel buffer returned by |
| 4505 | % QueueAuthenticPixels() any way it pleases. QueueAuthenticPixels() does not |
| 4506 | % initialize the pixel array values. Initializing pixel array values is the |
| 4507 | % application's responsibility. |
| 4508 | % |
| 4509 | % Performance is maximized if the selected region is part of one row, or |
| 4510 | % one or more full rows, since then there is opportunity to access the |
cristy | ad4e5b2 | 2010-01-10 00:04:19 +0000 | [diff] [blame] | 4511 | % pixels in-place (without a copy) if the image is in memory, or in a |
| 4512 | % memory-mapped file. The returned pointer must *never* be deallocated |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4513 | % by the user. |
| 4514 | % |
| 4515 | % Pixels accessed via the returned pointer represent a simple array of type |
| 4516 | % PixelPacket. If the image type is CMYK or the storage class is PseudoClass, |
| 4517 | % call GetAuthenticIndexQueue() after invoking GetAuthenticPixels() to obtain |
| 4518 | % the black color component or the colormap indexes (of type IndexPacket) |
| 4519 | % corresponding to the region. Once the PixelPacket (and/or IndexPacket) |
| 4520 | % array has been updated, the changes must be saved back to the underlying |
| 4521 | % image using SyncAuthenticPixels() or they may be lost. |
| 4522 | % |
| 4523 | % The format of the QueueAuthenticPixels() method is: |
| 4524 | % |
| 4525 | % PixelPacket *QueueAuthenticPixels(Image *image,const long x,const long y, |
| 4526 | % const unsigned long columns,const unsigned long rows, |
| 4527 | % ExceptionInfo *exception) |
| 4528 | % |
| 4529 | % A description of each parameter follows: |
| 4530 | % |
| 4531 | % o image: the image. |
| 4532 | % |
| 4533 | % o x,y,columns,rows: These values define the perimeter of a region of |
| 4534 | % pixels. |
| 4535 | % |
| 4536 | % o exception: return any errors or warnings in this structure. |
| 4537 | % |
| 4538 | */ |
| 4539 | MagickExport PixelPacket *QueueAuthenticPixels(Image *image,const long x, |
| 4540 | const long y,const unsigned long columns,const unsigned long rows, |
| 4541 | ExceptionInfo *exception) |
| 4542 | { |
| 4543 | CacheInfo |
| 4544 | *cache_info; |
| 4545 | |
| 4546 | PixelPacket |
| 4547 | *pixels; |
| 4548 | |
| 4549 | assert(image != (Image *) NULL); |
| 4550 | assert(image->signature == MagickSignature); |
| 4551 | if (image->debug != MagickFalse) |
| 4552 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4553 | assert(image->cache != (Cache) NULL); |
| 4554 | cache_info=(CacheInfo *) image->cache; |
| 4555 | assert(cache_info->signature == MagickSignature); |
| 4556 | if (cache_info->methods.queue_authentic_pixels_handler == |
| 4557 | (QueueAuthenticPixelsHandler) NULL) |
| 4558 | return((PixelPacket *) NULL); |
| 4559 | pixels=cache_info->methods.queue_authentic_pixels_handler(image,x,y,columns, |
| 4560 | rows,exception); |
| 4561 | return(pixels); |
| 4562 | } |
| 4563 | |
| 4564 | /* |
| 4565 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4566 | % % |
| 4567 | % % |
| 4568 | % % |
| 4569 | + R e a d P i x e l C a c h e I n d e x e s % |
| 4570 | % % |
| 4571 | % % |
| 4572 | % % |
| 4573 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4574 | % |
| 4575 | % ReadPixelCacheIndexes() reads colormap indexes from the specified region of |
| 4576 | % the pixel cache. |
| 4577 | % |
| 4578 | % The format of the ReadPixelCacheIndexes() method is: |
| 4579 | % |
| 4580 | % MagickBooleanType ReadPixelCacheIndexes(CacheInfo *cache_info, |
| 4581 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4582 | % |
| 4583 | % A description of each parameter follows: |
| 4584 | % |
| 4585 | % o cache_info: the pixel cache. |
| 4586 | % |
| 4587 | % o nexus_info: the cache nexus to read the colormap indexes. |
| 4588 | % |
| 4589 | % o exception: return any errors or warnings in this structure. |
| 4590 | % |
| 4591 | */ |
| 4592 | static MagickBooleanType ReadPixelCacheIndexes(CacheInfo *cache_info, |
| 4593 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4594 | { |
| 4595 | MagickOffsetType |
| 4596 | count, |
| 4597 | offset; |
| 4598 | |
| 4599 | MagickSizeType |
| 4600 | length, |
| 4601 | number_pixels; |
| 4602 | |
| 4603 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4604 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4605 | |
| 4606 | register long |
| 4607 | y; |
| 4608 | |
| 4609 | unsigned long |
| 4610 | rows; |
| 4611 | |
| 4612 | if (cache_info->debug != MagickFalse) |
| 4613 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4614 | cache_info->filename); |
| 4615 | if (cache_info->active_index_channel == MagickFalse) |
| 4616 | return(MagickFalse); |
| 4617 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 4618 | return(MagickTrue); |
| 4619 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 4620 | nexus_info->region.x; |
| 4621 | length=(MagickSizeType) nexus_info->region.width*sizeof(IndexPacket); |
| 4622 | rows=nexus_info->region.height; |
| 4623 | number_pixels=length*rows; |
| 4624 | if ((cache_info->columns == nexus_info->region.width) && |
| 4625 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 4626 | { |
| 4627 | length=number_pixels; |
| 4628 | rows=1UL; |
| 4629 | } |
| 4630 | q=nexus_info->indexes; |
| 4631 | switch (cache_info->type) |
| 4632 | { |
| 4633 | case MemoryCache: |
| 4634 | case MapCache: |
| 4635 | { |
| 4636 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4637 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4638 | |
| 4639 | /* |
| 4640 | Read indexes from memory. |
| 4641 | */ |
| 4642 | p=cache_info->indexes+offset; |
| 4643 | for (y=0; y < (long) rows; y++) |
| 4644 | { |
| 4645 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 4646 | p+=cache_info->columns; |
| 4647 | q+=nexus_info->region.width; |
| 4648 | } |
| 4649 | break; |
| 4650 | } |
| 4651 | case DiskCache: |
| 4652 | { |
| 4653 | /* |
| 4654 | Read indexes from disk. |
| 4655 | */ |
| 4656 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 4657 | { |
| 4658 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 4659 | cache_info->cache_filename); |
| 4660 | return(MagickFalse); |
| 4661 | } |
| 4662 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 4663 | for (y=0; y < (long) rows; y++) |
| 4664 | { |
| 4665 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+number_pixels* |
| 4666 | sizeof(PixelPacket)+offset*sizeof(*q),length,(unsigned char *) q); |
| 4667 | if ((MagickSizeType) count < length) |
| 4668 | break; |
| 4669 | offset+=cache_info->columns; |
| 4670 | q+=nexus_info->region.width; |
| 4671 | } |
| 4672 | if (y < (long) rows) |
| 4673 | { |
| 4674 | ThrowFileException(exception,CacheError,"UnableToReadPixelCache", |
| 4675 | cache_info->cache_filename); |
| 4676 | return(MagickFalse); |
| 4677 | } |
| 4678 | break; |
| 4679 | } |
| 4680 | default: |
| 4681 | break; |
| 4682 | } |
| 4683 | if ((cache_info->debug != MagickFalse) && |
| 4684 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 4685 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 4686 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 4687 | nexus_info->region.x,nexus_info->region.y); |
| 4688 | return(MagickTrue); |
| 4689 | } |
| 4690 | |
| 4691 | /* |
| 4692 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4693 | % % |
| 4694 | % % |
| 4695 | % % |
| 4696 | + R e a d P i x e l C a c h e P i x e l s % |
| 4697 | % % |
| 4698 | % % |
| 4699 | % % |
| 4700 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4701 | % |
| 4702 | % ReadPixelCachePixels() reads pixels from the specified region of the pixel |
| 4703 | % cache. |
| 4704 | % |
| 4705 | % The format of the ReadPixelCachePixels() method is: |
| 4706 | % |
| 4707 | % MagickBooleanType ReadPixelCachePixels(CacheInfo *cache_info, |
| 4708 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4709 | % |
| 4710 | % A description of each parameter follows: |
| 4711 | % |
| 4712 | % o cache_info: the pixel cache. |
| 4713 | % |
| 4714 | % o nexus_info: the cache nexus to read the pixels. |
| 4715 | % |
| 4716 | % o exception: return any errors or warnings in this structure. |
| 4717 | % |
| 4718 | */ |
| 4719 | static MagickBooleanType ReadPixelCachePixels(CacheInfo *cache_info, |
| 4720 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4721 | { |
| 4722 | MagickOffsetType |
| 4723 | count, |
| 4724 | offset; |
| 4725 | |
| 4726 | MagickSizeType |
| 4727 | length, |
| 4728 | number_pixels; |
| 4729 | |
| 4730 | register long |
| 4731 | y; |
| 4732 | |
| 4733 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4734 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4735 | |
| 4736 | unsigned long |
| 4737 | rows; |
| 4738 | |
| 4739 | if (cache_info->debug != MagickFalse) |
| 4740 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4741 | cache_info->filename); |
| 4742 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 4743 | return(MagickTrue); |
| 4744 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 4745 | nexus_info->region.x; |
| 4746 | length=(MagickSizeType) nexus_info->region.width*sizeof(PixelPacket); |
| 4747 | rows=nexus_info->region.height; |
| 4748 | number_pixels=length*rows; |
| 4749 | if ((cache_info->columns == nexus_info->region.width) && |
| 4750 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 4751 | { |
| 4752 | length=number_pixels; |
| 4753 | rows=1UL; |
| 4754 | } |
| 4755 | q=nexus_info->pixels; |
| 4756 | switch (cache_info->type) |
| 4757 | { |
| 4758 | case MemoryCache: |
| 4759 | case MapCache: |
| 4760 | { |
| 4761 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4762 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4763 | |
| 4764 | /* |
| 4765 | Read pixels from memory. |
| 4766 | */ |
| 4767 | p=cache_info->pixels+offset; |
| 4768 | for (y=0; y < (long) rows; y++) |
| 4769 | { |
| 4770 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 4771 | p+=cache_info->columns; |
| 4772 | q+=nexus_info->region.width; |
| 4773 | } |
| 4774 | break; |
| 4775 | } |
| 4776 | case DiskCache: |
| 4777 | { |
| 4778 | /* |
| 4779 | Read pixels from disk. |
| 4780 | */ |
| 4781 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 4782 | { |
| 4783 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 4784 | cache_info->cache_filename); |
| 4785 | return(MagickFalse); |
| 4786 | } |
| 4787 | for (y=0; y < (long) rows; y++) |
| 4788 | { |
| 4789 | count=ReadPixelCacheRegion(cache_info,cache_info->offset+offset* |
| 4790 | sizeof(*q),length,(unsigned char *) q); |
| 4791 | if ((MagickSizeType) count < length) |
| 4792 | break; |
| 4793 | offset+=cache_info->columns; |
| 4794 | q+=nexus_info->region.width; |
| 4795 | } |
| 4796 | if (y < (long) rows) |
| 4797 | { |
| 4798 | ThrowFileException(exception,CacheError,"UnableToReadPixelCache", |
| 4799 | cache_info->cache_filename); |
| 4800 | return(MagickFalse); |
| 4801 | } |
| 4802 | break; |
| 4803 | } |
| 4804 | default: |
| 4805 | break; |
| 4806 | } |
| 4807 | if ((cache_info->debug != MagickFalse) && |
| 4808 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 4809 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 4810 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 4811 | nexus_info->region.x,nexus_info->region.y); |
| 4812 | return(MagickTrue); |
| 4813 | } |
| 4814 | |
| 4815 | /* |
| 4816 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4817 | % % |
| 4818 | % % |
| 4819 | % % |
| 4820 | + R e f e r e n c e P i x e l C a c h e % |
| 4821 | % % |
| 4822 | % % |
| 4823 | % % |
| 4824 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4825 | % |
| 4826 | % ReferencePixelCache() increments the reference count associated with the |
| 4827 | % pixel cache returning a pointer to the cache. |
| 4828 | % |
| 4829 | % The format of the ReferencePixelCache method is: |
| 4830 | % |
| 4831 | % Cache ReferencePixelCache(Cache cache_info) |
| 4832 | % |
| 4833 | % A description of each parameter follows: |
| 4834 | % |
| 4835 | % o cache_info: the pixel cache. |
| 4836 | % |
| 4837 | */ |
| 4838 | MagickExport Cache ReferencePixelCache(Cache cache) |
| 4839 | { |
| 4840 | CacheInfo |
| 4841 | *cache_info; |
| 4842 | |
| 4843 | assert(cache != (Cache *) NULL); |
| 4844 | cache_info=(CacheInfo *) cache; |
| 4845 | assert(cache_info->signature == MagickSignature); |
| 4846 | if (cache_info->debug != MagickFalse) |
| 4847 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4848 | cache_info->filename); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 4849 | LockSemaphoreInfo(cache_info->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4850 | cache_info->reference_count++; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 4851 | UnlockSemaphoreInfo(cache_info->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4852 | return(cache_info); |
| 4853 | } |
| 4854 | |
| 4855 | /* |
| 4856 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4857 | % % |
| 4858 | % % |
| 4859 | % % |
| 4860 | + S e t P i x e l C a c h e M e t h o d s % |
| 4861 | % % |
| 4862 | % % |
| 4863 | % % |
| 4864 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4865 | % |
| 4866 | % SetPixelCacheMethods() sets the image pixel methods to the specified ones. |
| 4867 | % |
| 4868 | % The format of the SetPixelCacheMethods() method is: |
| 4869 | % |
| 4870 | % SetPixelCacheMethods(Cache *,CacheMethods *cache_methods) |
| 4871 | % |
| 4872 | % A description of each parameter follows: |
| 4873 | % |
| 4874 | % o cache: the pixel cache. |
| 4875 | % |
| 4876 | % o cache_methods: Specifies a pointer to a CacheMethods structure. |
| 4877 | % |
| 4878 | */ |
| 4879 | MagickExport void SetPixelCacheMethods(Cache cache,CacheMethods *cache_methods) |
| 4880 | { |
| 4881 | CacheInfo |
| 4882 | *cache_info; |
| 4883 | |
| 4884 | GetOneAuthenticPixelFromHandler |
| 4885 | get_one_authentic_pixel_from_handler; |
| 4886 | |
| 4887 | GetOneVirtualPixelFromHandler |
| 4888 | get_one_virtual_pixel_from_handler; |
| 4889 | |
| 4890 | /* |
| 4891 | Set cache pixel methods. |
| 4892 | */ |
| 4893 | assert(cache != (Cache) NULL); |
| 4894 | assert(cache_methods != (CacheMethods *) NULL); |
| 4895 | cache_info=(CacheInfo *) cache; |
| 4896 | assert(cache_info->signature == MagickSignature); |
| 4897 | if (cache_info->debug != MagickFalse) |
| 4898 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 4899 | cache_info->filename); |
| 4900 | if (cache_methods->get_virtual_pixel_handler != (GetVirtualPixelHandler) NULL) |
| 4901 | cache_info->methods.get_virtual_pixel_handler= |
| 4902 | cache_methods->get_virtual_pixel_handler; |
| 4903 | if (cache_methods->destroy_pixel_handler != (DestroyPixelHandler) NULL) |
| 4904 | cache_info->methods.destroy_pixel_handler= |
| 4905 | cache_methods->destroy_pixel_handler; |
| 4906 | if (cache_methods->get_virtual_indexes_from_handler != |
| 4907 | (GetVirtualIndexesFromHandler) NULL) |
| 4908 | cache_info->methods.get_virtual_indexes_from_handler= |
| 4909 | cache_methods->get_virtual_indexes_from_handler; |
| 4910 | if (cache_methods->get_authentic_pixels_handler != |
| 4911 | (GetAuthenticPixelsHandler) NULL) |
| 4912 | cache_info->methods.get_authentic_pixels_handler= |
| 4913 | cache_methods->get_authentic_pixels_handler; |
| 4914 | if (cache_methods->queue_authentic_pixels_handler != |
| 4915 | (QueueAuthenticPixelsHandler) NULL) |
| 4916 | cache_info->methods.queue_authentic_pixels_handler= |
| 4917 | cache_methods->queue_authentic_pixels_handler; |
| 4918 | if (cache_methods->sync_authentic_pixels_handler != |
| 4919 | (SyncAuthenticPixelsHandler) NULL) |
| 4920 | cache_info->methods.sync_authentic_pixels_handler= |
| 4921 | cache_methods->sync_authentic_pixels_handler; |
| 4922 | if (cache_methods->get_authentic_pixels_from_handler != |
| 4923 | (GetAuthenticPixelsFromHandler) NULL) |
| 4924 | cache_info->methods.get_authentic_pixels_from_handler= |
| 4925 | cache_methods->get_authentic_pixels_from_handler; |
| 4926 | if (cache_methods->get_authentic_indexes_from_handler != |
| 4927 | (GetAuthenticIndexesFromHandler) NULL) |
| 4928 | cache_info->methods.get_authentic_indexes_from_handler= |
| 4929 | cache_methods->get_authentic_indexes_from_handler; |
| 4930 | get_one_virtual_pixel_from_handler= |
| 4931 | cache_info->methods.get_one_virtual_pixel_from_handler; |
| 4932 | if (get_one_virtual_pixel_from_handler != |
| 4933 | (GetOneVirtualPixelFromHandler) NULL) |
| 4934 | cache_info->methods.get_one_virtual_pixel_from_handler= |
| 4935 | cache_methods->get_one_virtual_pixel_from_handler; |
| 4936 | get_one_authentic_pixel_from_handler= |
| 4937 | cache_methods->get_one_authentic_pixel_from_handler; |
| 4938 | if (get_one_authentic_pixel_from_handler != |
| 4939 | (GetOneAuthenticPixelFromHandler) NULL) |
| 4940 | cache_info->methods.get_one_authentic_pixel_from_handler= |
| 4941 | cache_methods->get_one_authentic_pixel_from_handler; |
| 4942 | } |
| 4943 | |
| 4944 | /* |
| 4945 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4946 | % % |
| 4947 | % % |
| 4948 | % % |
| 4949 | + S e t P i x e l C a c h e N e x u s P i x e l s % |
| 4950 | % % |
| 4951 | % % |
| 4952 | % % |
| 4953 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4954 | % |
| 4955 | % SetPixelCacheNexusPixels() defines the region of the cache for the |
| 4956 | % specified cache nexus. |
| 4957 | % |
| 4958 | % The format of the SetPixelCacheNexusPixels() method is: |
| 4959 | % |
| 4960 | % PixelPacket SetPixelCacheNexusPixels(const Image *image, |
| 4961 | % const RectangleInfo *region,NexusInfo *nexus_info, |
| 4962 | % ExceptionInfo *exception) |
| 4963 | % |
| 4964 | % A description of each parameter follows: |
| 4965 | % |
| 4966 | % o image: the image. |
| 4967 | % |
| 4968 | % o region: A pointer to the RectangleInfo structure that defines the |
| 4969 | % region of this particular cache nexus. |
| 4970 | % |
| 4971 | % o nexus_info: the cache nexus to set. |
| 4972 | % |
| 4973 | % o exception: return any errors or warnings in this structure. |
| 4974 | % |
| 4975 | */ |
| 4976 | static PixelPacket *SetPixelCacheNexusPixels(const Image *image, |
| 4977 | const RectangleInfo *region,NexusInfo *nexus_info,ExceptionInfo *exception) |
| 4978 | { |
| 4979 | CacheInfo |
| 4980 | *cache_info; |
| 4981 | |
| 4982 | MagickBooleanType |
| 4983 | status; |
| 4984 | |
| 4985 | MagickOffsetType |
| 4986 | offset; |
| 4987 | |
| 4988 | MagickSizeType |
| 4989 | length, |
| 4990 | number_pixels; |
| 4991 | |
| 4992 | if (image->debug != MagickFalse) |
| 4993 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4994 | cache_info=(CacheInfo *) image->cache; |
| 4995 | assert(cache_info->signature == MagickSignature); |
| 4996 | if (cache_info->type == UndefinedCache) |
| 4997 | return((PixelPacket *) NULL); |
| 4998 | nexus_info->region.width=region->width == 0UL ? 1UL : region->width; |
| 4999 | nexus_info->region.height=region->height == 0UL ? 1UL : region->height; |
| 5000 | nexus_info->region.x=region->x; |
| 5001 | nexus_info->region.y=region->y; |
| 5002 | if ((cache_info->type != DiskCache) && (image->clip_mask == (Image *) NULL) && |
| 5003 | (image->mask == (Image *) NULL)) |
| 5004 | { |
| 5005 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 5006 | nexus_info->region.x; |
| 5007 | length=(MagickSizeType) (nexus_info->region.height-1)*cache_info->columns+ |
| 5008 | nexus_info->region.width-1; |
| 5009 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 5010 | if ((offset >= 0) && (((MagickSizeType) offset+length) < number_pixels)) |
| 5011 | { |
| 5012 | long |
| 5013 | x, |
| 5014 | y; |
| 5015 | |
| 5016 | x=nexus_info->region.x+nexus_info->region.width; |
| 5017 | y=nexus_info->region.y+nexus_info->region.height; |
| 5018 | if ((nexus_info->region.x >= 0) && |
| 5019 | (x <= (long) cache_info->columns) && |
| 5020 | (nexus_info->region.y >= 0) && (y <= (long) cache_info->rows)) |
| 5021 | if ((nexus_info->region.height == 1UL) || |
| 5022 | ((nexus_info->region.x == 0) && |
| 5023 | ((nexus_info->region.width % cache_info->columns) == 0))) |
| 5024 | { |
| 5025 | /* |
| 5026 | Pixels are accessed directly from memory. |
| 5027 | */ |
| 5028 | nexus_info->pixels=cache_info->pixels+offset; |
| 5029 | nexus_info->indexes=(IndexPacket *) NULL; |
| 5030 | if (cache_info->active_index_channel != MagickFalse) |
| 5031 | nexus_info->indexes=cache_info->indexes+offset; |
| 5032 | return(nexus_info->pixels); |
| 5033 | } |
| 5034 | } |
| 5035 | } |
| 5036 | /* |
| 5037 | Pixels are stored in a cache region until they are synced to the cache. |
| 5038 | */ |
| 5039 | number_pixels=(MagickSizeType) nexus_info->region.width* |
| 5040 | nexus_info->region.height; |
| 5041 | length=number_pixels*sizeof(PixelPacket); |
| 5042 | if (cache_info->active_index_channel != MagickFalse) |
| 5043 | length+=number_pixels*sizeof(IndexPacket); |
| 5044 | if (nexus_info->cache == (PixelPacket *) NULL) |
| 5045 | { |
| 5046 | nexus_info->length=length; |
| 5047 | status=AcquireCacheNexusPixels(cache_info,nexus_info,exception); |
| 5048 | if (status == MagickFalse) |
| 5049 | return((PixelPacket *) NULL); |
| 5050 | } |
| 5051 | else |
| 5052 | if (nexus_info->length != length) |
| 5053 | { |
| 5054 | RelinquishCacheNexusPixels(nexus_info); |
| 5055 | nexus_info->length=length; |
| 5056 | status=AcquireCacheNexusPixels(cache_info,nexus_info,exception); |
| 5057 | if (status == MagickFalse) |
| 5058 | return((PixelPacket *) NULL); |
| 5059 | } |
| 5060 | nexus_info->pixels=nexus_info->cache; |
| 5061 | nexus_info->indexes=(IndexPacket *) NULL; |
| 5062 | if (cache_info->active_index_channel != MagickFalse) |
| 5063 | nexus_info->indexes=(IndexPacket *) (nexus_info->pixels+number_pixels); |
| 5064 | return(nexus_info->pixels); |
| 5065 | } |
| 5066 | |
| 5067 | /* |
| 5068 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5069 | % % |
| 5070 | % % |
| 5071 | % % |
| 5072 | % 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 % |
| 5073 | % % |
| 5074 | % % |
| 5075 | % % |
| 5076 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5077 | % |
| 5078 | % SetPixelCacheVirtualMethod() sets the "virtual pixels" method for the |
| 5079 | % pixel cache and returns the previous setting. A virtual pixel is any pixel |
| 5080 | % access that is outside the boundaries of the image cache. |
| 5081 | % |
| 5082 | % The format of the SetPixelCacheVirtualMethod() method is: |
| 5083 | % |
| 5084 | % VirtualPixelMethod SetPixelCacheVirtualMethod(const Image *image, |
| 5085 | % const VirtualPixelMethod virtual_pixel_method) |
| 5086 | % |
| 5087 | % A description of each parameter follows: |
| 5088 | % |
| 5089 | % o image: the image. |
| 5090 | % |
| 5091 | % o virtual_pixel_method: choose the type of virtual pixel. |
| 5092 | % |
| 5093 | */ |
| 5094 | MagickExport VirtualPixelMethod SetPixelCacheVirtualMethod(const Image *image, |
| 5095 | const VirtualPixelMethod virtual_pixel_method) |
| 5096 | { |
| 5097 | CacheInfo |
| 5098 | *cache_info; |
| 5099 | |
| 5100 | VirtualPixelMethod |
| 5101 | method; |
| 5102 | |
| 5103 | assert(image != (Image *) NULL); |
| 5104 | assert(image->signature == MagickSignature); |
| 5105 | if (image->debug != MagickFalse) |
| 5106 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5107 | assert(image->cache != (Cache) NULL); |
| 5108 | cache_info=(CacheInfo *) image->cache; |
| 5109 | assert(cache_info->signature == MagickSignature); |
| 5110 | method=cache_info->virtual_pixel_method; |
| 5111 | cache_info->virtual_pixel_method=virtual_pixel_method; |
| 5112 | return(method); |
| 5113 | } |
| 5114 | |
| 5115 | /* |
| 5116 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5117 | % % |
| 5118 | % % |
| 5119 | % % |
| 5120 | + 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 % |
| 5121 | % % |
| 5122 | % % |
| 5123 | % % |
| 5124 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5125 | % |
| 5126 | % SyncAuthenticPixelCacheNexus() saves the authentic image pixels to the |
| 5127 | % in-memory or disk cache. The method returns MagickTrue if the pixel region |
| 5128 | % is synced, otherwise MagickFalse. |
| 5129 | % |
| 5130 | % The format of the SyncAuthenticPixelCacheNexus() method is: |
| 5131 | % |
| 5132 | % MagickBooleanType SyncAuthenticPixelCacheNexus(Image *image, |
| 5133 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5134 | % |
| 5135 | % A description of each parameter follows: |
| 5136 | % |
| 5137 | % o image: the image. |
| 5138 | % |
| 5139 | % o nexus_info: the cache nexus to sync. |
| 5140 | % |
| 5141 | % o exception: return any errors or warnings in this structure. |
| 5142 | % |
| 5143 | */ |
| 5144 | MagickExport MagickBooleanType SyncAuthenticPixelCacheNexus(Image *image, |
| 5145 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5146 | { |
| 5147 | CacheInfo |
| 5148 | *cache_info; |
| 5149 | |
| 5150 | MagickBooleanType |
| 5151 | status; |
| 5152 | |
| 5153 | /* |
| 5154 | Transfer pixels to the cache. |
| 5155 | */ |
| 5156 | assert(image != (Image *) NULL); |
| 5157 | assert(image->signature == MagickSignature); |
| 5158 | if (image->debug != MagickFalse) |
| 5159 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5160 | if (image->cache == (Cache) NULL) |
| 5161 | ThrowBinaryException(CacheError,"PixelCacheIsNotOpen",image->filename); |
| 5162 | cache_info=(CacheInfo *) image->cache; |
| 5163 | if (cache_info->type == UndefinedCache) |
| 5164 | return(MagickFalse); |
| 5165 | if ((image->clip_mask != (Image *) NULL) && |
| 5166 | (ClipPixelCacheNexus(image,nexus_info,exception) == MagickFalse)) |
| 5167 | return(MagickFalse); |
| 5168 | if ((image->mask != (Image *) NULL) && |
| 5169 | (MaskPixelCacheNexus(image,nexus_info,exception) == MagickFalse)) |
| 5170 | return(MagickFalse); |
| 5171 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 5172 | return(MagickTrue); |
| 5173 | assert(cache_info->signature == MagickSignature); |
| 5174 | status=WritePixelCachePixels(cache_info,nexus_info,exception); |
| 5175 | if ((cache_info->active_index_channel != MagickFalse) && |
| 5176 | (WritePixelCacheIndexes(cache_info,nexus_info,exception) == MagickFalse)) |
| 5177 | return(MagickFalse); |
| 5178 | return(status); |
| 5179 | } |
| 5180 | |
| 5181 | /* |
| 5182 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5183 | % % |
| 5184 | % % |
| 5185 | % % |
| 5186 | + S y n c A u t h e n t i c P i x e l C a c h e % |
| 5187 | % % |
| 5188 | % % |
| 5189 | % % |
| 5190 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5191 | % |
| 5192 | % SyncAuthenticPixelsCache() saves the authentic image pixels to the in-memory |
| 5193 | % or disk cache. The method returns MagickTrue if the pixel region is synced, |
| 5194 | % otherwise MagickFalse. |
| 5195 | % |
| 5196 | % The format of the SyncAuthenticPixelsCache() method is: |
| 5197 | % |
| 5198 | % MagickBooleanType SyncAuthenticPixelsCache(Image *image, |
| 5199 | % ExceptionInfo *exception) |
| 5200 | % |
| 5201 | % A description of each parameter follows: |
| 5202 | % |
| 5203 | % o image: the image. |
| 5204 | % |
| 5205 | % o exception: return any errors or warnings in this structure. |
| 5206 | % |
| 5207 | */ |
| 5208 | static MagickBooleanType SyncAuthenticPixelsCache(Image *image, |
| 5209 | ExceptionInfo *exception) |
| 5210 | { |
| 5211 | CacheInfo |
| 5212 | *cache_info; |
| 5213 | |
| 5214 | long |
| 5215 | id; |
| 5216 | |
| 5217 | MagickBooleanType |
| 5218 | status; |
| 5219 | |
| 5220 | cache_info=(CacheInfo *) image->cache; |
| 5221 | id=GetOpenMPThreadId(); |
| 5222 | assert(id < (long) cache_info->number_threads); |
| 5223 | status=SyncAuthenticPixelCacheNexus(image,cache_info->nexus_info[id], |
| 5224 | exception); |
| 5225 | return(status); |
| 5226 | } |
| 5227 | |
| 5228 | /* |
| 5229 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5230 | % % |
| 5231 | % % |
| 5232 | % % |
| 5233 | % S y n c A u t h e n t i c P i x e l s % |
| 5234 | % % |
| 5235 | % % |
| 5236 | % % |
| 5237 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5238 | % |
| 5239 | % SyncAuthenticPixels() saves the image pixels to the in-memory or disk cache. |
| 5240 | % The method returns MagickTrue if the pixel region is flushed, otherwise |
| 5241 | % MagickFalse. |
| 5242 | % |
| 5243 | % The format of the SyncAuthenticPixels() method is: |
| 5244 | % |
| 5245 | % MagickBooleanType SyncAuthenticPixels(Image *image, |
| 5246 | % ExceptionInfo *exception) |
| 5247 | % |
| 5248 | % A description of each parameter follows: |
| 5249 | % |
| 5250 | % o image: the image. |
| 5251 | % |
| 5252 | % o exception: return any errors or warnings in this structure. |
| 5253 | % |
| 5254 | */ |
| 5255 | MagickExport MagickBooleanType SyncAuthenticPixels(Image *image, |
| 5256 | ExceptionInfo *exception) |
| 5257 | { |
| 5258 | CacheInfo |
| 5259 | *cache_info; |
| 5260 | |
| 5261 | assert(image != (Image *) NULL); |
| 5262 | assert(image->signature == MagickSignature); |
| 5263 | if (image->debug != MagickFalse) |
| 5264 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5265 | assert(image->cache != (Cache) NULL); |
| 5266 | cache_info=(CacheInfo *) image->cache; |
| 5267 | assert(cache_info->signature == MagickSignature); |
| 5268 | if (cache_info->methods.sync_authentic_pixels_handler == |
| 5269 | (SyncAuthenticPixelsHandler) NULL) |
| 5270 | return(MagickFalse); |
| 5271 | return(cache_info->methods.sync_authentic_pixels_handler(image,exception)); |
| 5272 | } |
| 5273 | |
| 5274 | /* |
| 5275 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5276 | % % |
| 5277 | % % |
| 5278 | % % |
| 5279 | + W r i t e P i x e l C a c h e I n d e x e s % |
| 5280 | % % |
| 5281 | % % |
| 5282 | % % |
| 5283 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5284 | % |
| 5285 | % WritePixelCacheIndexes() writes the colormap indexes to the specified |
| 5286 | % region of the pixel cache. |
| 5287 | % |
| 5288 | % The format of the WritePixelCacheIndexes() method is: |
| 5289 | % |
| 5290 | % MagickBooleanType WritePixelCacheIndexes(CacheInfo *cache_info, |
| 5291 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5292 | % |
| 5293 | % A description of each parameter follows: |
| 5294 | % |
| 5295 | % o cache_info: the pixel cache. |
| 5296 | % |
| 5297 | % o nexus_info: the cache nexus to write the colormap indexes. |
| 5298 | % |
| 5299 | % o exception: return any errors or warnings in this structure. |
| 5300 | % |
| 5301 | */ |
| 5302 | static MagickBooleanType WritePixelCacheIndexes(CacheInfo *cache_info, |
| 5303 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5304 | { |
| 5305 | MagickOffsetType |
| 5306 | count, |
| 5307 | offset; |
| 5308 | |
| 5309 | MagickSizeType |
| 5310 | length, |
| 5311 | number_pixels; |
| 5312 | |
| 5313 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5314 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5315 | |
| 5316 | register long |
| 5317 | y; |
| 5318 | |
| 5319 | unsigned long |
| 5320 | rows; |
| 5321 | |
| 5322 | if (cache_info->debug != MagickFalse) |
| 5323 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 5324 | cache_info->filename); |
| 5325 | if (cache_info->active_index_channel == MagickFalse) |
| 5326 | return(MagickFalse); |
| 5327 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 5328 | return(MagickTrue); |
| 5329 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 5330 | nexus_info->region.x; |
| 5331 | length=(MagickSizeType) nexus_info->region.width*sizeof(IndexPacket); |
| 5332 | rows=nexus_info->region.height; |
| 5333 | number_pixels=(MagickSizeType) length*rows; |
| 5334 | if ((cache_info->columns == nexus_info->region.width) && |
| 5335 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 5336 | { |
| 5337 | length=number_pixels; |
| 5338 | rows=1UL; |
| 5339 | } |
| 5340 | p=nexus_info->indexes; |
| 5341 | switch (cache_info->type) |
| 5342 | { |
| 5343 | case MemoryCache: |
| 5344 | case MapCache: |
| 5345 | { |
| 5346 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5347 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5348 | |
| 5349 | /* |
| 5350 | Write indexes to memory. |
| 5351 | */ |
| 5352 | q=cache_info->indexes+offset; |
| 5353 | for (y=0; y < (long) rows; y++) |
| 5354 | { |
| 5355 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 5356 | p+=nexus_info->region.width; |
| 5357 | q+=cache_info->columns; |
| 5358 | } |
| 5359 | break; |
| 5360 | } |
| 5361 | case DiskCache: |
| 5362 | { |
| 5363 | /* |
| 5364 | Write indexes to disk. |
| 5365 | */ |
| 5366 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 5367 | { |
| 5368 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 5369 | cache_info->cache_filename); |
| 5370 | return(MagickFalse); |
| 5371 | } |
| 5372 | number_pixels=(MagickSizeType) cache_info->columns*cache_info->rows; |
| 5373 | for (y=0; y < (long) rows; y++) |
| 5374 | { |
| 5375 | count=WritePixelCacheRegion(cache_info,cache_info->offset+number_pixels* |
| 5376 | sizeof(PixelPacket)+offset*sizeof(*p),length, |
| 5377 | (const unsigned char *) p); |
| 5378 | if ((MagickSizeType) count < length) |
| 5379 | break; |
| 5380 | p+=nexus_info->region.width; |
| 5381 | offset+=cache_info->columns; |
| 5382 | } |
| 5383 | if (y < (long) rows) |
| 5384 | { |
| 5385 | ThrowFileException(exception,CacheError,"UnableToWritePixelCache", |
| 5386 | cache_info->cache_filename); |
| 5387 | return(MagickFalse); |
| 5388 | } |
| 5389 | break; |
| 5390 | } |
| 5391 | default: |
| 5392 | break; |
| 5393 | } |
| 5394 | if ((cache_info->debug != MagickFalse) && |
| 5395 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 5396 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 5397 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 5398 | nexus_info->region.x,nexus_info->region.y); |
| 5399 | return(MagickTrue); |
| 5400 | } |
| 5401 | |
| 5402 | /* |
| 5403 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5404 | % % |
| 5405 | % % |
| 5406 | % % |
| 5407 | + W r i t e C a c h e P i x e l s % |
| 5408 | % % |
| 5409 | % % |
| 5410 | % % |
| 5411 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5412 | % |
| 5413 | % WritePixelCachePixels() writes image pixels to the specified region of the |
| 5414 | % pixel cache. |
| 5415 | % |
| 5416 | % The format of the WritePixelCachePixels() method is: |
| 5417 | % |
| 5418 | % MagickBooleanType WritePixelCachePixels(CacheInfo *cache_info, |
| 5419 | % NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5420 | % |
| 5421 | % A description of each parameter follows: |
| 5422 | % |
| 5423 | % o cache_info: the pixel cache. |
| 5424 | % |
| 5425 | % o nexus_info: the cache nexus to write the pixels. |
| 5426 | % |
| 5427 | % o exception: return any errors or warnings in this structure. |
| 5428 | % |
| 5429 | */ |
| 5430 | static MagickBooleanType WritePixelCachePixels(CacheInfo *cache_info, |
| 5431 | NexusInfo *nexus_info,ExceptionInfo *exception) |
| 5432 | { |
| 5433 | MagickOffsetType |
| 5434 | count, |
| 5435 | offset; |
| 5436 | |
| 5437 | MagickSizeType |
| 5438 | length, |
| 5439 | number_pixels; |
| 5440 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5441 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5442 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5443 | |
cristy | 25ffffb | 2009-12-07 17:15:07 +0000 | [diff] [blame] | 5444 | register long |
| 5445 | y; |
| 5446 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5447 | unsigned long |
| 5448 | rows; |
| 5449 | |
| 5450 | if (cache_info->debug != MagickFalse) |
| 5451 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 5452 | cache_info->filename); |
| 5453 | if (IsNexusInCore(cache_info,nexus_info) != MagickFalse) |
| 5454 | return(MagickTrue); |
| 5455 | offset=(MagickOffsetType) nexus_info->region.y*cache_info->columns+ |
| 5456 | nexus_info->region.x; |
| 5457 | length=(MagickSizeType) nexus_info->region.width*sizeof(PixelPacket); |
| 5458 | rows=nexus_info->region.height; |
| 5459 | number_pixels=length*rows; |
| 5460 | if ((cache_info->columns == nexus_info->region.width) && |
| 5461 | (number_pixels == (MagickSizeType) ((size_t) number_pixels))) |
| 5462 | { |
| 5463 | length=number_pixels; |
| 5464 | rows=1UL; |
| 5465 | } |
| 5466 | p=nexus_info->pixels; |
| 5467 | switch (cache_info->type) |
| 5468 | { |
| 5469 | case MemoryCache: |
| 5470 | case MapCache: |
| 5471 | { |
| 5472 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5473 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5474 | |
| 5475 | /* |
| 5476 | Write pixels to memory. |
| 5477 | */ |
| 5478 | q=cache_info->pixels+offset; |
| 5479 | for (y=0; y < (long) rows; y++) |
| 5480 | { |
| 5481 | (void) CopyMagickMemory(q,p,(size_t) length); |
| 5482 | p+=nexus_info->region.width; |
| 5483 | q+=cache_info->columns; |
| 5484 | } |
| 5485 | break; |
| 5486 | } |
| 5487 | case DiskCache: |
| 5488 | { |
| 5489 | /* |
| 5490 | Write pixels to disk. |
| 5491 | */ |
| 5492 | if (OpenPixelCacheOnDisk(cache_info,IOMode) == MagickFalse) |
| 5493 | { |
| 5494 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 5495 | cache_info->cache_filename); |
| 5496 | return(MagickFalse); |
| 5497 | } |
| 5498 | for (y=0; y < (long) rows; y++) |
| 5499 | { |
| 5500 | count=WritePixelCacheRegion(cache_info,cache_info->offset+offset* |
| 5501 | sizeof(*p),length,(const unsigned char *) p); |
| 5502 | if ((MagickSizeType) count < length) |
| 5503 | break; |
| 5504 | p+=nexus_info->region.width; |
| 5505 | offset+=cache_info->columns; |
| 5506 | } |
| 5507 | if (y < (long) rows) |
| 5508 | { |
| 5509 | ThrowFileException(exception,CacheError,"UnableToWritePixelCache", |
| 5510 | cache_info->cache_filename); |
| 5511 | return(MagickFalse); |
| 5512 | } |
| 5513 | break; |
| 5514 | } |
| 5515 | default: |
| 5516 | break; |
| 5517 | } |
| 5518 | if ((cache_info->debug != MagickFalse) && |
| 5519 | (QuantumTick(nexus_info->region.y,cache_info->rows) != MagickFalse)) |
| 5520 | (void) LogMagickEvent(CacheEvent,GetMagickModule(),"%s[%lux%lu%+ld%+ld]", |
| 5521 | cache_info->filename,nexus_info->region.width,nexus_info->region.height, |
| 5522 | nexus_info->region.x,nexus_info->region.y); |
| 5523 | return(MagickTrue); |
| 5524 | } |