1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423
|
/*
% Copyright (C) 2003 GraphicsMagick Group
% Copyright (C) 2002 ImageMagick Studio
% Copyright 1991-1999 E. I. du Pont de Nemours and Company
%
% This program is covered by multiple licenses, which are described in
% Copyright.txt. You should have received a copy of Copyright.txt with this
% package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% AAA V V SSSSS %
% A A V V SS %
% AAAAA V V SSS %
% A A V V SS %
% A A V SSSSS %
% %
% %
% Read/Write AVS X Image Format. %
% %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/log.h"
#include "magick/magick.h"
#include "magick/monitor.h"
#include "magick/pixel_cache.h"
#include "magick/utility.h"
/*
Forward declarations.
*/
static unsigned int
WriteAVSImage(const ImageInfo *,Image *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d A V S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method ReadAVSImage reads an AVS X image file and returns it. It
% allocates the memory necessary for the new Image structure and returns a
% pointer to the new image. Note that these files often have the extension
% 'X' which conflicts with our X11 support coder.
%
% The format of the ReadAVSImage method is:
%
% Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadAVSImage returns a pointer to the image after
% reading. A null image is returned if there is a memory shortage or if
% the image cannot be read.
%
% o image_info: Specifies a pointer to a ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
#define AVS_WIDTH_LIMIT 65536 /* Artificially limit width to 64K pixels */
#define AVS_HEIGHT_LIMIT 65536 /* Artificially limit height to 64K pixels */
static Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image
*image;
long
y;
register long
x;
register PixelPacket
*q;
register unsigned char
*p;
unsigned char
*pixels;
unsigned int
status;
unsigned long
height,
width;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFail)
ThrowReaderException(FileOpenError,UnableToOpenFile,image);
/*
Read AVS image.
*/
width=ReadBlobMSBLong(image);
height=ReadBlobMSBLong(image);
if (EOFBlob(image))
ThrowReaderException(CorruptImageError,UnexpectedEndOfFile,image);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"AVS dimensions %ldx%ld",width,height);
/*
Impose a maximum width and height limit in order to avoid
incredibly huge allocations.
*/
if ((width > AVS_WIDTH_LIMIT) || (height > AVS_HEIGHT_LIMIT))
ThrowReaderException(CoderError,ImageColumnOrRowSizeIsNotSupported,image);
do
{
/*
Convert AVS raster image to pixel packets.
*/
size_t
row_bytes;
image->columns=width;
image->rows=height;
image->depth=8;
if (image_info->ping && (image_info->subrange != 0))
if (image->scene >= (image_info->subimage+image_info->subrange-1))
break;
pixels=MagickAllocateArray(unsigned char *,image->columns,4);
if (pixels == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);
row_bytes=4*image->columns;
for (y=0; y < (long) image->rows; y++)
{
if (ReadBlob(image,row_bytes,pixels) != row_bytes)
{
ThrowException(exception,CorruptImageError,UnexpectedEndOfFile,
image->filename);
status=MagickFail;
}
p=pixels;
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
{
status=MagickFail;
break;
}
for (x=0; x < (long) image->columns; x++)
{
q->opacity=(Quantum) (MaxRGB-ScaleCharToQuantum(*p++));
q->red=ScaleCharToQuantum(*p++);
q->green=ScaleCharToQuantum(*p++);
q->blue=ScaleCharToQuantum(*p++);
image->matte|=(q->opacity != OpaqueOpacity);
q++;
}
if (!SyncImagePixels(image))
{
status=MagickFail;
break;
}
if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows))
if (!MagickMonitorFormatted(y,image->rows,exception,
LoadImageText,image->filename,
image->columns,image->rows))
{
status=MagickFail;
break;
}
if (MagickFail == status)
break;
}
MagickFreeMemory(pixels);
if (MagickFail == status)
break;
/*
Proceed to next image.
*/
if (image_info->subrange != 0)
if (image->scene >= (image_info->subimage+image_info->subrange-1))
break;
width=ReadBlobMSBLong(image);
height=ReadBlobMSBLong(image);
if (!(EOFBlob(image)) && (width <= AVS_WIDTH_LIMIT) &&
(height <= AVS_HEIGHT_LIMIT))
{
/*
Allocate next image structure.
*/
AllocateNextImage(image_info,image);
if (image->next == (Image *) NULL)
{
DestroyImageList(image);
return((Image *) NULL);
}
image=SyncNextImageInList(image);
status=MagickMonitorFormatted(TellBlob(image),GetBlobSize(image),
exception,LoadImagesText,image->filename);
if (status == MagickFail)
break;
}
} while (!(EOFBlob(image)));
while (image->previous != (Image *) NULL)
image=image->previous;
CloseBlob(image);
if (MagickFail == status)
{
DestroyImageList(image);
image=(Image *) NULL;
}
return(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r A V S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method RegisterAVSImage adds attributes for the AVS image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterAVSImage method is:
%
% RegisterAVSImage(void)
%
*/
ModuleExport void RegisterAVSImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("AVS");
entry->decoder=(DecoderHandler) ReadAVSImage;
entry->encoder=(EncoderHandler) WriteAVSImage;
entry->description="AVS X image";
entry->module="AVS";
entry->coder_class=UnstableCoderClass;
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r A V S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterAVSImage removes format registrations made by the
% AVS module from the list of supported formats.
%
% The format of the UnregisterAVSImage method is:
%
% UnregisterAVSImage(void)
%
*/
ModuleExport void UnregisterAVSImage(void)
{
(void) UnregisterMagickInfo("AVS");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e A V S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method WriteAVSImage writes an image to a file in AVS X image format.
%
% The format of the WriteAVSImage method is:
%
% unsigned int WriteAVSImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o status: Method WriteAVSImage return True if the image is written.
% False is returned is there is a memory shortage or if the image file
% fails to write.
%
% o image_info: Specifies a pointer to a ImageInfo structure.
%
% o image: A pointer to an Image structure.
%
%
*/
static unsigned int WriteAVSImage(const ImageInfo *image_info,Image *image)
{
register const PixelPacket
*p;
register long
x,
y;
register unsigned char
*q;
unsigned char
*pixels;
unsigned int
status;
unsigned long
scene;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == False)
ThrowWriterException(FileOpenError,UnableToOpenFile,image);
scene=0;
do
{
/*
Write AVS header.
*/
(void) TransformColorspace(image,RGBColorspace);
(void) WriteBlobMSBLong(image,image->columns);
(void) WriteBlobMSBLong(image,image->rows);
/*
Allocate memory for pixels.
*/
pixels=MagickAllocateMemory(unsigned char *,image->columns*sizeof(PixelPacket));
if (pixels == (unsigned char *) NULL)
ThrowWriterException(ResourceLimitError,MemoryAllocationFailed,image);
/*
Convert MIFF to AVS raster pixels.
*/
for (y=0; y < (long) image->rows; y++)
{
p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
if (p == (PixelPacket *) NULL)
break;
q=pixels;
for (x=0; x < (long) image->columns; x++)
{
*q++=ScaleQuantumToChar(
MaxRGB-(image->matte ? p->opacity : OpaqueOpacity));
*q++=ScaleQuantumToChar(p->red);
*q++=ScaleQuantumToChar(p->green);
*q++=ScaleQuantumToChar(p->blue);
p++;
}
(void) WriteBlob(image,q-pixels,(char *) pixels);
if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows))
if (!MagickMonitorFormatted(y,image->rows,&image->exception,
SaveImageText,image->filename,
image->columns,image->rows))
break;
}
MagickFreeMemory(pixels);
if (image->next == (Image *) NULL)
break;
image=SyncNextImageInList(image);
status=MagickMonitorFormatted(scene++,GetImageListLength(image),
&image->exception,SaveImagesText,
image->filename);
if (status == False)
break;
} while (image_info->adjoin);
if (image_info->adjoin)
while (image->previous != (Image *) NULL)
image=image->previous;
CloseBlob(image);
return(True);
}
|