1 /* 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3 % % 4 % % 5 % % 6 % U U Y Y V V Y Y % 7 % U U Y Y V V Y Y % 8 % U U Y V V Y % 9 % U U Y V V Y % 10 % UUU Y V Y % 11 % % 12 % % 13 % Read/Write 16bit/pixel Interleaved YUV Image Format % 14 % % 15 % Software Design % 16 % Cristy % 17 % July 1992 % 18 % % 19 % % 20 % Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization % 21 % dedicated to making software imaging solutions freely available. % 22 % % 23 % You may not use this file except in compliance with the License. You may % 24 % obtain a copy of the License at % 25 % % 26 % http://www.imagemagick.org/script/license.php % 27 % % 28 % Unless required by applicable law or agreed to in writing, software % 29 % distributed under the License is distributed on an "AS IS" BASIS, % 30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % 31 % See the License for the specific language governing permissions and % 32 % limitations under the License. % 33 % % 34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 35 % 36 % 37 */ 38 39 /* 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/color.h" 48 #include "MagickCore/colorspace.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 WriteUYVYImage(const ImageInfo *,Image *,ExceptionInfo *); 70 71 /* 73 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 74 % % 75 % % 76 % % 77 % R e a d U Y V Y I m a g e % 78 % % 79 % % 80 % % 81 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 82 % 83 % ReadUYVYImage() reads an image in the UYVY format 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 ReadUYVYImage method is: 88 % 89 % Image *ReadUYVYImage(const ImageInfo *image_info, 90 % ExceptionInfo *exception) 91 % 92 % A description of each parameter follows: 93 % 94 % o image_info: the image info. 95 % 96 % o exception: return any errors or warnings in this structure. 97 % 98 */ 99 static Image *ReadUYVYImage(const ImageInfo *image_info, 100 ExceptionInfo *exception) 101 { 102 Image 103 *image; 104 105 MagickBooleanType 106 status; 107 108 register ssize_t 109 x; 110 111 register Quantum 112 *q; 113 114 ssize_t 115 y; 116 117 unsigned char 118 u, 119 v, 120 y1, 121 y2; 122 123 /* 124 Open image file. 125 */ 126 assert(image_info != (const ImageInfo *) NULL); 127 assert(image_info->signature == MagickCoreSignature); 128 if (image_info->debug != MagickFalse) 129 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", 130 image_info->filename); 131 assert(exception != (ExceptionInfo *) NULL); 132 assert(exception->signature == MagickCoreSignature); 133 image=AcquireImage(image_info,exception); 134 if ((image->columns == 0) || (image->rows == 0)) 135 ThrowReaderException(OptionError,"MustSpecifyImageSize"); 136 if ((image->columns % 2) != 0) 137 image->columns++; 138 (void) CopyMagickString(image->filename,image_info->filename,MagickPathExtent); 139 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); 140 if (status == MagickFalse) 141 return((Image *) NULL); 142 if (DiscardBlobBytes(image,image->offset) == MagickFalse) 143 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", 144 image->filename); 145 image->depth=8; 146 if (image_info->ping != MagickFalse) 147 { 148 (void) CloseBlob(image); 149 return(GetFirstImageInList(image)); 150 } 151 status=SetImageExtent(image,image->columns,image->rows,exception); 152 if (status == MagickFalse) 153 return(DestroyImageList(image)); 154 /* 155 Accumulate UYVY, then unpack into two pixels. 156 */ 157 for (y=0; y < (ssize_t) image->rows; y++) 158 { 159 q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); 160 if (q == (Quantum *) NULL) 161 break; 162 for (x=0; x < (ssize_t) (image->columns >> 1); x++) 163 { 164 u=(unsigned char) ReadBlobByte(image); 165 y1=(unsigned char) ReadBlobByte(image); 166 v=(unsigned char) ReadBlobByte(image); 167 y2=(unsigned char) ReadBlobByte(image); 168 SetPixelRed(image,ScaleCharToQuantum(y1),q); 169 SetPixelGreen(image,ScaleCharToQuantum(u),q); 170 SetPixelBlue(image,ScaleCharToQuantum(v),q); 171 q+=GetPixelChannels(image); 172 SetPixelRed(image,ScaleCharToQuantum(y2),q); 173 SetPixelGreen(image,ScaleCharToQuantum(u),q); 174 SetPixelBlue(image,ScaleCharToQuantum(v),q); 175 q+=GetPixelChannels(image); 176 } 177 if (SyncAuthenticPixels(image,exception) == MagickFalse) 178 break; 179 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, 180 image->rows); 181 if (status == MagickFalse) 182 break; 183 } 184 SetImageColorspace(image,YCbCrColorspace,exception); 185 if (EOFBlob(image) != MagickFalse) 186 ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", 187 image->filename); 188 (void) CloseBlob(image); 189 return(GetFirstImageInList(image)); 190 } 191 192 /* 194 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 195 % % 196 % % 197 % % 198 % R e g i s t e r U Y V Y I m a g e % 199 % % 200 % % 201 % % 202 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 203 % 204 % RegisterUYVYImage() adds attributes for the UYVY image format to 205 % the list of supported formats. The attributes include the image format 206 % tag, a method to read and/or write the format, whether the format 207 % supports the saving of more than one frame to the same file or blob, 208 % whether the format supports native in-memory I/O, and a brief 209 % description of the format. 210 % 211 % The format of the RegisterUYVYImage method is: 212 % 213 % size_t RegisterUYVYImage(void) 214 % 215 */ 216 ModuleExport size_t RegisterUYVYImage(void) 217 { 218 MagickInfo 219 *entry; 220 221 entry=AcquireMagickInfo("UYVY","PAL","16bit/pixel interleaved YUV"); 222 entry->decoder=(DecodeImageHandler *) ReadUYVYImage; 223 entry->encoder=(EncodeImageHandler *) WriteUYVYImage; 224 entry->flags^=CoderAdjoinFlag; 225 entry->flags|=CoderRawSupportFlag; 226 entry->flags|=CoderEndianSupportFlag; 227 (void) RegisterMagickInfo(entry); 228 entry=AcquireMagickInfo("UYVY","UYVY","16bit/pixel interleaved YUV"); 229 entry->decoder=(DecodeImageHandler *) ReadUYVYImage; 230 entry->encoder=(EncodeImageHandler *) WriteUYVYImage; 231 entry->flags^=CoderAdjoinFlag; 232 entry->flags|=CoderRawSupportFlag; 233 entry->flags|=CoderEndianSupportFlag; 234 (void) RegisterMagickInfo(entry); 235 return(MagickImageCoderSignature); 236 } 237 238 /* 240 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 241 % % 242 % % 243 % % 244 % U n r e g i s t e r U Y V Y I m a g e % 245 % % 246 % % 247 % % 248 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 249 % 250 % UnregisterUYVYImage() removes format registrations made by the 251 % UYVY module from the list of supported formats. 252 % 253 % The format of the UnregisterUYVYImage method is: 254 % 255 % UnregisterUYVYImage(void) 256 % 257 */ 258 ModuleExport void UnregisterUYVYImage(void) 259 { 260 (void) UnregisterMagickInfo("PAL"); 261 (void) UnregisterMagickInfo("UYVY"); 262 } 263 264 /* 266 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 267 % % 268 % % 269 % % 270 % W r i t e U Y V Y I m a g e % 271 % % 272 % % 273 % % 274 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 275 % 276 % WriteUYVYImage() writes an image to a file in the digital UYVY 277 % format. This format, used by AccomWSD, is not dramatically higher quality 278 % than the 12bit/pixel YUV format, but has better locality. 279 % 280 % The format of the WriteUYVYImage method is: 281 % 282 % MagickBooleanType WriteUYVYImage(const ImageInfo *image_info, 283 % Image *image,ExceptionInfo *exception) 284 % 285 % A description of each parameter follows. 286 % 287 % o image_info: the image info. 288 % 289 % o image: The image. Implicit assumption: number of columns is even. 290 % 291 % o exception: return any errors or warnings in this structure. 292 % 293 */ 294 static MagickBooleanType WriteUYVYImage(const ImageInfo *image_info, 295 Image *image,ExceptionInfo *exception) 296 { 297 PixelInfo 298 pixel; 299 300 Image 301 *uyvy_image; 302 303 MagickBooleanType 304 full, 305 status; 306 307 register const Quantum 308 *p; 309 310 register ssize_t 311 x; 312 313 ssize_t 314 y; 315 316 /* 317 Open output image file. 318 */ 319 assert(image_info != (const ImageInfo *) NULL); 320 assert(image_info->signature == MagickCoreSignature); 321 assert(image != (Image *) NULL); 322 assert(image->signature == MagickCoreSignature); 323 if (image->debug != MagickFalse) 324 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); 325 if ((image->columns % 2) != 0) 326 image->columns++; 327 assert(exception != (ExceptionInfo *) NULL); 328 assert(exception->signature == MagickCoreSignature); 329 status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); 330 if (status == MagickFalse) 331 return(status); 332 /* 333 Accumulate two pixels, then output. 334 */ 335 uyvy_image=CloneImage(image,0,0,MagickTrue,exception); 336 if (uyvy_image == (Image *) NULL) 337 return(MagickFalse); 338 (void) TransformImageColorspace(uyvy_image,YCbCrColorspace,exception); 339 full=MagickFalse; 340 (void) ResetMagickMemory(&pixel,0,sizeof(PixelInfo)); 341 for (y=0; y < (ssize_t) image->rows; y++) 342 { 343 p=GetVirtualPixels(uyvy_image,0,y,image->columns,1,exception); 344 if (p == (const Quantum *) NULL) 345 break; 346 for (x=0; x < (ssize_t) image->columns; x++) 347 { 348 if (full != MagickFalse) 349 { 350 pixel.green=(pixel.green+GetPixelGreen(uyvy_image,p))/2; 351 pixel.blue=(pixel.blue+GetPixelBlue(uyvy_image,p))/2; 352 (void) WriteBlobByte(image,ScaleQuantumToChar((Quantum) pixel.green)); 353 (void) WriteBlobByte(image,ScaleQuantumToChar((Quantum) pixel.red)); 354 (void) WriteBlobByte(image,ScaleQuantumToChar((Quantum) pixel.blue)); 355 (void) WriteBlobByte(image,ScaleQuantumToChar( 356 GetPixelRed(uyvy_image,p))); 357 } 358 pixel.red=(double) GetPixelRed(uyvy_image,p); 359 pixel.green=(double) GetPixelGreen(uyvy_image,p); 360 pixel.blue=(double) GetPixelBlue(uyvy_image,p); 361 full=full == MagickFalse ? MagickTrue : MagickFalse; 362 p+=GetPixelChannels(uyvy_image); 363 } 364 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, 365 image->rows); 366 if (status == MagickFalse) 367 break; 368 } 369 uyvy_image=DestroyImage(uyvy_image); 370 (void) CloseBlob(image); 371 return(MagickTrue); 372 } 373
