/branches/ImageMagick-6.6.7/coders/avs.c
C | 399 lines | 222 code | 16 blank | 161 comment | 79 complexity | 957daa0c1c7e575a83e226c6763de979 MD5 | raw file
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % 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 %
- % %
- % %
- % Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization %
- % dedicated to making software imaging solutions freely available. %
- % %
- % You may not use this file except in compliance with the License. You may %
- % obtain a copy of the License at %
- % %
- % http://www.imagemagick.org/script/license.php %
- % %
- % Unless required by applicable law or agreed to in writing, software %
- % distributed under the License is distributed on an "AS IS" BASIS, %
- % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
- % See the License for the specific language governing permissions and %
- % limitations under the License. %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- %
- */
- /*
- Include declarations.
- */
- #include "magick/studio.h"
- #include "magick/blob.h"
- #include "magick/blob-private.h"
- #include "magick/cache.h"
- #include "magick/colorspace.h"
- #include "magick/exception.h"
- #include "magick/exception-private.h"
- #include "magick/image.h"
- #include "magick/image-private.h"
- #include "magick/list.h"
- #include "magick/magick.h"
- #include "magick/memory_.h"
- #include "magick/monitor.h"
- #include "magick/monitor-private.h"
- #include "magick/quantum-private.h"
- #include "magick/static.h"
- #include "magick/string_.h"
- #include "magick/module.h"
- /*
- Forward declarations.
- */
- static MagickBooleanType
- WriteAVSImage(const ImageInfo *,Image *);
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % R e a d A V S I m a g e %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % 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.
- %
- % The format of the ReadAVSImage method is:
- %
- % Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
- %
- % A description of each parameter follows:
- %
- % o image_info: the image info.
- %
- % o exception: return any errors or warnings in this structure.
- %
- */
- static Image *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
- {
- Image
- *image;
- MagickBooleanType
- status;
- register ssize_t
- x;
- register PixelPacket
- *q;
- register unsigned char
- *p;
- size_t
- height,
- length,
- width;
- ssize_t
- count,
- y;
- unsigned char
- *pixels;
- /*
- Open image file.
- */
- assert(image_info != (const ImageInfo *) NULL);
- assert(image_info->signature == MagickSignature);
- if (image_info->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
- image_info->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickSignature);
- image=AcquireImage(image_info);
- status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
- if (status == MagickFalse)
- {
- image=DestroyImageList(image);
- return((Image *) NULL);
- }
- /*
- Read AVS X image.
- */
- width=ReadBlobMSBLong(image);
- height=ReadBlobMSBLong(image);
- if (EOFBlob(image) != MagickFalse)
- ThrowReaderException(CorruptImageError,"ImproperImageHeader");
- if ((width == 0UL) || (height == 0UL))
- ThrowReaderException(CorruptImageError,"ImproperImageHeader");
- do
- {
- /*
- Convert AVS raster image to pixel packets.
- */
- image->columns=width;
- image->rows=height;
- image->depth=8;
- if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
- if (image->scene >= (image_info->scene+image_info->number_scenes-1))
- break;
- pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
- 4*sizeof(*pixels));
- if (pixels == (unsigned char *) NULL)
- ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
- length=(size_t) 4*image->columns;
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- count=ReadBlob(image,length,pixels);
- if ((size_t) count != length)
- ThrowReaderException(CorruptImageError,"UnableToReadImageData");
- p=pixels;
- q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
- if (q == (PixelPacket *) NULL)
- break;
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- q->opacity=(Quantum) (QuantumRange-ScaleCharToQuantum(*p++));
- q->red=ScaleCharToQuantum(*p++);
- q->green=ScaleCharToQuantum(*p++);
- q->blue=ScaleCharToQuantum(*p++);
- if (q->opacity != OpaqueOpacity)
- image->matte=MagickTrue;
- q++;
- }
- if (SyncAuthenticPixels(image,exception) == MagickFalse)
- break;
- if ((image->previous == (Image *) NULL) &&
- (SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,image->rows) == MagickFalse))
- break;
- }
- pixels=(unsigned char *) RelinquishMagickMemory(pixels);
- if (EOFBlob(image) != MagickFalse)
- {
- ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
- image->filename);
- break;
- }
- /*
- Proceed to next image.
- */
- if (image_info->number_scenes != 0)
- if (image->scene >= (image_info->scene+image_info->number_scenes-1))
- break;
- width=ReadBlobMSBLong(image);
- height=ReadBlobMSBLong(image);
- if ((width != 0UL) && (height != 0UL))
- {
- /*
- Allocate next image structure.
- */
- AcquireNextImage(image_info,image);
- if (GetNextImageInList(image) == (Image *) NULL)
- {
- image=DestroyImageList(image);
- return((Image *) NULL);
- }
- image=SyncNextImageInList(image);
- status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
- GetBlobSize(image));
- if (status == MagickFalse)
- break;
- }
- } while ((width != 0UL) && (height != 0UL));
- (void) CloseBlob(image);
- return(GetFirstImageInList(image));
- }
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % R e g i s t e r A V S I m a g e %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % RegisterAVSImage() adds attributes for the AVS X 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:
- %
- % size_t RegisterAVSImage(void)
- %
- */
- ModuleExport size_t RegisterAVSImage(void)
- {
- MagickInfo
- *entry;
- entry=SetMagickInfo("AVS");
- entry->decoder=(DecodeImageHandler *) ReadAVSImage;
- entry->encoder=(EncodeImageHandler *) WriteAVSImage;
- entry->description=ConstantString("AVS X image");
- entry->module=ConstantString("AVS");
- (void) RegisterMagickInfo(entry);
- return(MagickImageCoderSignature);
- }
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % U n r e g i s t e r A V S I m a g e %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % 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 %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % WriteAVSImage() writes an image to a file in AVS X image format.
- %
- % The format of the WriteAVSImage method is:
- %
- % MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image)
- %
- % A description of each parameter follows.
- %
- % o image_info: the image info.
- %
- % o image: The image.
- %
- */
- static MagickBooleanType WriteAVSImage(const ImageInfo *image_info,Image *image)
- {
- MagickBooleanType
- status;
- MagickOffsetType
- scene;
- register const PixelPacket
- *restrict p;
- register ssize_t
- x;
- register unsigned char
- *restrict q;
- ssize_t
- count,
- y;
- unsigned char
- *pixels;
- /*
- Open output image file.
- */
- assert(image_info != (const ImageInfo *) NULL);
- assert(image_info->signature == MagickSignature);
- assert(image != (Image *) NULL);
- assert(image->signature == MagickSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
- if (status == MagickFalse)
- return(status);
- scene=0;
- do
- {
- /*
- Write AVS header.
- */
- if (image->colorspace != RGBColorspace)
- (void) TransformImageColorspace(image,RGBColorspace);
- (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
- (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
- /*
- Allocate memory for pixels.
- */
- pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->columns,
- 4*sizeof(*pixels));
- if (pixels == (unsigned char *) NULL)
- ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
- /*
- Convert MIFF to AVS raster pixels.
- */
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
- if (p == (PixelPacket *) NULL)
- break;
- q=pixels;
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- *q++=ScaleQuantumToChar((Quantum) (QuantumRange-
- (image->matte != MagickFalse ? p->opacity : OpaqueOpacity)));
- *q++=ScaleQuantumToChar(GetRedPixelComponent(p));
- *q++=ScaleQuantumToChar(GetGreenPixelComponent(p));
- *q++=ScaleQuantumToChar(GetBluePixelComponent(p));
- p++;
- }
- count=WriteBlob(image,(size_t) (q-pixels),pixels);
- if (count != (ssize_t) (q-pixels))
- break;
- if ((image->previous == (Image *) NULL) &&
- (SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,image->rows) == MagickFalse))
- break;
- }
- pixels=(unsigned char *) RelinquishMagickMemory(pixels);
- if (GetNextImageInList(image) == (Image *) NULL)
- break;
- image=SyncNextImageInList(image);
- status=SetImageProgress(image,SaveImagesTag,scene++,
- GetImageListLength(image));
- if (status == MagickFalse)
- break;
- } while (image_info->adjoin != MagickFalse);
- (void) CloseBlob(image);
- return(MagickTrue);
- }