1 /* 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3 % % 4 % % 5 % % 6 % H H RRRR ZZZZZ % 7 % H H R R ZZ % 8 % HHHHH RRRR Z % 9 % H H R R ZZ % 10 % H H R R ZZZZZ % 11 % % 12 % % 13 % Read/Write Slow Scan TeleVision Image Format % 14 % % 15 % Software Design % 16 % Cristy % 17 % July 1992 % 18 % % 19 % % 20 % Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization % 21 % dedicated to making software imaging solutions freely available. % 22 % % 23 % You may not use this file except in compliance with the License. You may % 24 % obtain a copy of the License at % 25 % % 26 % https://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 /* 41 Include declarations. 42 */ 43 #include "MagickCore/studio.h" 44 #include "MagickCore/blob.h" 45 #include "MagickCore/blob-private.h" 46 #include "MagickCore/cache.h" 47 #include "MagickCore/colorspace.h" 48 #include "MagickCore/colorspace-private.h" 49 #include "MagickCore/exception.h" 50 #include "MagickCore/exception-private.h" 51 #include "MagickCore/image.h" 52 #include "MagickCore/image-private.h" 53 #include "MagickCore/list.h" 54 #include "MagickCore/magick.h" 55 #include "MagickCore/memory_.h" 56 #include "MagickCore/monitor.h" 57 #include "MagickCore/monitor-private.h" 58 #include "MagickCore/pixel-accessor.h" 59 #include "MagickCore/quantum-private.h" 60 #include "MagickCore/static.h" 61 #include "MagickCore/string_.h" 62 #include "MagickCore/module.h" 63 64 /* 66 Forward declarations. 67 */ 68 static MagickBooleanType 69 WriteHRZImage(const ImageInfo *,Image *,ExceptionInfo *); 70 71 /* 73 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 74 % % 75 % % 76 % % 77 % R e a d H R Z I m a g e % 78 % % 79 % % 80 % % 81 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 82 % 83 % ReadHRZImage() reads a Slow Scan TeleVision image file and returns it. It 84 % allocates the memory necessary for the new Image structure and returns a 85 % pointer to the new image. 86 % 87 % The format of the ReadHRZImage method is: 88 % 89 % Image *ReadHRZImage(const ImageInfo *image_info,ExceptionInfo *exception) 90 % 91 % A description of each parameter follows: 92 % 93 % o image_info: the image info. 94 % 95 % o exception: return any errors or warnings in this structure. 96 % 97 */ 98 static Image *ReadHRZImage(const ImageInfo *image_info,ExceptionInfo *exception) 99 { 100 Image 101 *image; 102 103 MagickBooleanType 104 status; 105 106 register ssize_t 107 x; 108 109 register Quantum 110 *q; 111 112 register unsigned char 113 *p; 114 115 ssize_t 116 count, 117 y; 118 119 size_t 120 length; 121 122 unsigned char 123 *pixels; 124 125 /* 126 Open image file. 127 */ 128 assert(image_info != (const ImageInfo *) NULL); 129 assert(image_info->signature == MagickCoreSignature); 130 if (image_info->debug != MagickFalse) 131 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", 132 image_info->filename); 133 assert(exception != (ExceptionInfo *) NULL); 134 assert(exception->signature == MagickCoreSignature); 135 image=AcquireImage(image_info,exception); 136 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); 137 if (status == MagickFalse) 138 { 139 image=DestroyImageList(image); 140 return((Image *) NULL); 141 } 142 /* 143 Convert HRZ raster image to pixel packets. 144 */ 145 image->columns=256; 146 image->rows=240; 147 image->depth=8; 148 status=SetImageExtent(image,image->columns,image->rows,exception); 149 if (status == MagickFalse) 150 return(DestroyImageList(image)); 151 pixels=(unsigned char *) AcquireQuantumMemory(image->columns,3* 152 sizeof(*pixels)); 153 if (pixels == (unsigned char *) NULL) 154 ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); 155 length=(size_t) (3*image->columns); 156 for (y=0; y < (ssize_t) image->rows; y++) 157 { 158 count=ReadBlob(image,length,pixels); 159 if ((size_t) count != length) 160 { 161 pixels=(unsigned char *) RelinquishMagickMemory(pixels); 162 ThrowReaderException(CorruptImageError,"UnableToReadImageData"); 163 } 164 p=pixels; 165 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); 166 if (q == (Quantum *) NULL) 167 break; 168 for (x=0; x < (ssize_t) image->columns; x++) 169 { 170 SetPixelRed(image,ScaleCharToQuantum(4**p++),q); 171 SetPixelGreen(image,ScaleCharToQuantum(4**p++),q); 172 SetPixelBlue(image,ScaleCharToQuantum(4**p++),q); 173 SetPixelAlpha(image,OpaqueAlpha,q); 174 q+=GetPixelChannels(image); 175 } 176 if (SyncAuthenticPixels(image,exception) == MagickFalse) 177 break; 178 if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse) 179 break; 180 } 181 pixels=(unsigned char *) RelinquishMagickMemory(pixels); 182 if (EOFBlob(image) != MagickFalse) 183 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", 184 image->filename); 185 (void) CloseBlob(image); 186 return(GetFirstImageInList(image)); 187 } 188 189 /* 191 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 192 % % 193 % % 194 % % 195 % R e g i s t e r H R Z I m a g e % 196 % % 197 % % 198 % % 199 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 200 % 201 % RegisterHRZImage() adds attributes for the HRZ X image format to the list 202 % of supported formats. The attributes include the image format tag, a 203 % method to read and/or write the format, whether the format supports the 204 % saving of more than one frame to the same file or blob, whether the format 205 % supports native in-memory I/O, and a brief description of the format. 206 % 207 % The format of the RegisterHRZImage method is: 208 % 209 % size_t RegisterHRZImage(void) 210 % 211 */ 212 ModuleExport size_t RegisterHRZImage(void) 213 { 214 MagickInfo 215 *entry; 216 217 entry=AcquireMagickInfo("HRZ","HRZ","Slow Scan TeleVision"); 218 entry->decoder=(DecodeImageHandler *) ReadHRZImage; 219 entry->encoder=(EncodeImageHandler *) WriteHRZImage; 220 entry->flags^=CoderAdjoinFlag; 221 (void) RegisterMagickInfo(entry); 222 return(MagickImageCoderSignature); 223 } 224 225 /* 227 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 228 % % 229 % % 230 % % 231 % U n r e g i s t e r H R Z I m a g e % 232 % % 233 % % 234 % % 235 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 236 % 237 % UnregisterHRZImage() removes format registrations made by the 238 % HRZ module from the list of supported formats. 239 % 240 % The format of the UnregisterHRZImage method is: 241 % 242 % UnregisterHRZImage(void) 243 % 244 */ 245 ModuleExport void UnregisterHRZImage(void) 246 { 247 (void) UnregisterMagickInfo("HRZ"); 248 } 249 250 /* 252 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 253 % % 254 % % 255 % % 256 % W r i t e H R Z I m a g e % 257 % % 258 % % 259 % % 260 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 261 % 262 % WriteHRZImage() writes an image to a file in HRZ X image format. 263 % 264 % The format of the WriteHRZImage method is: 265 % 266 % MagickBooleanType WriteHRZImage(const ImageInfo *image_info, 267 % Image *image,ExceptionInfo *exception) 268 % 269 % A description of each parameter follows. 270 % 271 % o image_info: the image info. 272 % 273 % o image: The image. 274 % 275 % o exception: return any errors or warnings in this structure. 276 % 277 */ 278 static MagickBooleanType WriteHRZImage(const ImageInfo *image_info,Image *image, 279 ExceptionInfo *exception) 280 { 281 Image 282 *hrz_image; 283 284 MagickBooleanType 285 status; 286 287 register const Quantum 288 *p; 289 290 register ssize_t 291 x, 292 y; 293 294 register unsigned char 295 *q; 296 297 ssize_t 298 count; 299 300 unsigned char 301 *pixels; 302 303 /* 304 Open output image file. 305 */ 306 assert(image_info != (const ImageInfo *) NULL); 307 assert(image_info->signature == MagickCoreSignature); 308 assert(image != (Image *) NULL); 309 assert(image->signature == MagickCoreSignature); 310 if (image->debug != MagickFalse) 311 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); 312 assert(exception != (ExceptionInfo *) NULL); 313 assert(exception->signature == MagickCoreSignature); 314 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); 315 if (status == MagickFalse) 316 return(status); 317 hrz_image=ResizeImage(image,256,240,image->filter,exception); 318 if (hrz_image == (Image *) NULL) 319 return(MagickFalse); 320 (void) TransformImageColorspace(hrz_image,sRGBColorspace,exception); 321 /* 322 Allocate memory for pixels. 323 */ 324 pixels=(unsigned char *) AcquireQuantumMemory((size_t) hrz_image->columns, 325 3*sizeof(*pixels)); 326 if (pixels == (unsigned char *) NULL) 327 { 328 hrz_image=DestroyImage(hrz_image); 329 ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); 330 } 331 /* 332 Convert MIFF to HRZ raster pixels. 333 */ 334 for (y=0; y < (ssize_t) hrz_image->rows; y++) 335 { 336 p=GetVirtualPixels(hrz_image,0,y,hrz_image->columns,1,exception); 337 if (p == (const Quantum *) NULL) 338 break; 339 q=pixels; 340 for (x=0; x < (ssize_t) hrz_image->columns; x++) 341 { 342 *q++=ScaleQuantumToChar(GetPixelRed(hrz_image,p)/4); 343 *q++=ScaleQuantumToChar(GetPixelGreen(hrz_image,p)/4); 344 *q++=ScaleQuantumToChar(GetPixelBlue(hrz_image,p)/4); 345 p+=GetPixelChannels(hrz_image); 346 } 347 count=WriteBlob(image,(size_t) (q-pixels),pixels); 348 if (count != (ssize_t) (q-pixels)) 349 break; 350 status=SetImageProgress(image,SaveImageTag,y,hrz_image->rows); 351 if (status == MagickFalse) 352 break; 353 } 354 pixels=(unsigned char *) RelinquishMagickMemory(pixels); 355 hrz_image=DestroyImage(hrz_image); 356 (void) CloseBlob(image); 357 return(MagickTrue); 358 } 359
