| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % SSSSS U U N N % |
| % SS U U NN N % |
| % SSS U U N N N % |
| % SS U U N NN % |
| % SSSSS UUU N N % |
| % % |
| % % |
| % Read/Write Sun Rasterfile Image Format % |
| % % |
| % Software Design % |
| % Cristy % |
| % July 1992 % |
| % % |
| % % |
| % Copyright 1999-2020 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 % |
| % % |
| % https://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 "MagickCore/studio.h" |
| #include "MagickCore/attribute.h" |
| #include "MagickCore/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/cache.h" |
| #include "MagickCore/color.h" |
| #include "MagickCore/color-private.h" |
| #include "MagickCore/colormap.h" |
| #include "MagickCore/colormap-private.h" |
| #include "MagickCore/colorspace.h" |
| #include "MagickCore/colorspace-private.h" |
| #include "MagickCore/exception.h" |
| #include "MagickCore/exception-private.h" |
| #include "MagickCore/image.h" |
| #include "MagickCore/image-private.h" |
| #include "MagickCore/list.h" |
| #include "MagickCore/magick.h" |
| #include "MagickCore/memory_.h" |
| #include "MagickCore/monitor.h" |
| #include "MagickCore/monitor-private.h" |
| #include "MagickCore/pixel-accessor.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WriteSUNImage(const ImageInfo *,Image *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s S U N % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsSUN() returns MagickTrue if the image format type, identified by the |
| % magick string, is SUN. |
| % |
| % The format of the IsSUN method is: |
| % |
| % MagickBooleanType IsSUN(const unsigned char *magick,const size_t length) |
| % |
| % A description of each parameter follows: |
| % |
| % o magick: compare image format pattern against these bytes. |
| % |
| % o length: Specifies the length of the magick string. |
| % |
| */ |
| static MagickBooleanType IsSUN(const unsigned char *magick,const size_t length) |
| { |
| if (length < 4) |
| return(MagickFalse); |
| if (memcmp(magick,"\131\246\152\225",4) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % D e c o d e I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % DecodeImage unpacks the packed image pixels into runlength-encoded pixel |
| % packets. |
| % |
| % The format of the DecodeImage method is: |
| % |
| % MagickBooleanType DecodeImage(const unsigned char *compressed_pixels, |
| % const size_t length,unsigned char *pixels) |
| % |
| % A description of each parameter follows: |
| % |
| % o compressed_pixels: The address of a byte (8 bits) array of compressed |
| % pixel data. |
| % |
| % o length: An integer value that is the total number of bytes of the |
| % source image (as just read by ReadBlob) |
| % |
| % o pixels: The address of a byte (8 bits) array of pixel data created by |
| % the uncompression process. The number of bytes in this array |
| % must be at least equal to the number columns times the number of rows |
| % of the source pixels. |
| % |
| */ |
| static MagickBooleanType DecodeImage(const unsigned char *compressed_pixels, |
| const size_t length,unsigned char *pixels,size_t extent) |
| { |
| register const unsigned char |
| *p; |
| |
| register unsigned char |
| *q; |
| |
| ssize_t |
| count; |
| |
| unsigned char |
| byte; |
| |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| assert(compressed_pixels != (unsigned char *) NULL); |
| assert(pixels != (unsigned char *) NULL); |
| p=compressed_pixels; |
| q=pixels; |
| while (((size_t) (p-compressed_pixels) < length) && |
| ((size_t) (q-pixels) < extent)) |
| { |
| byte=(*p++); |
| if (byte != 128U) |
| *q++=byte; |
| else |
| { |
| /* |
| Runlength-encoded packet: <count><byte>. |
| */ |
| if (((size_t) (p-compressed_pixels) >= length)) |
| break; |
| count=(*p++); |
| if (count > 0) |
| { |
| if (((size_t) (p-compressed_pixels) >= length)) |
| break; |
| byte=(*p++); |
| } |
| while ((count >= 0) && ((size_t) (q-pixels) < extent)) |
| { |
| *q++=byte; |
| count--; |
| } |
| } |
| } |
| return(((size_t) (q-pixels) == extent) ? MagickTrue : MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d S U N I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadSUNImage() reads a SUN 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 ReadSUNImage method is: |
| % |
| % Image *ReadSUNImage(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 *ReadSUNImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| #define RMT_EQUAL_RGB 1 |
| #define RMT_NONE 0 |
| #define RMT_RAW 2 |
| #define RT_STANDARD 1 |
| #define RT_ENCODED 2 |
| #define RT_FORMAT_RGB 3 |
| |
| typedef struct _SUNInfo |
| { |
| unsigned int |
| magic, |
| width, |
| height, |
| depth, |
| length, |
| type, |
| maptype, |
| maplength; |
| } SUNInfo; |
| |
| Image |
| *image; |
| |
| int |
| bit; |
| |
| MagickBooleanType |
| status; |
| |
| MagickSizeType |
| number_pixels; |
| |
| register Quantum |
| *q; |
| |
| register ssize_t |
| i, |
| x; |
| |
| register unsigned char |
| *p; |
| |
| size_t |
| bytes_per_line, |
| extent, |
| height, |
| pixels_length, |
| quantum; |
| |
| ssize_t |
| count, |
| y; |
| |
| SUNInfo |
| sun_info; |
| |
| unsigned char |
| *sun_data, |
| *sun_pixels; |
| |
| /* |
| Open image file. |
| */ |
| assert(image_info != (const ImageInfo *) NULL); |
| assert(image_info->signature == MagickCoreSignature); |
| if (image_info->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| image_info->filename); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickCoreSignature); |
| image=AcquireImage(image_info,exception); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| /* |
| Read SUN raster header. |
| */ |
| (void) memset(&sun_info,0,sizeof(sun_info)); |
| sun_info.magic=ReadBlobMSBLong(image); |
| do |
| { |
| /* |
| Verify SUN identifier. |
| */ |
| if (sun_info.magic != 0x59a66a95) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| sun_info.width=ReadBlobMSBLong(image); |
| sun_info.height=ReadBlobMSBLong(image); |
| sun_info.depth=ReadBlobMSBLong(image); |
| sun_info.length=ReadBlobMSBLong(image); |
| sun_info.type=ReadBlobMSBLong(image); |
| sun_info.maptype=ReadBlobMSBLong(image); |
| sun_info.maplength=ReadBlobMSBLong(image); |
| if (sun_info.maplength > GetBlobSize(image)) |
| ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| extent=sun_info.height*sun_info.width; |
| if ((sun_info.height != 0) && (sun_info.width != extent/sun_info.height)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if ((sun_info.type != RT_STANDARD) && (sun_info.type != RT_ENCODED) && |
| (sun_info.type != RT_FORMAT_RGB)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if ((sun_info.maptype == RMT_NONE) && (sun_info.maplength != 0)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if ((sun_info.depth != 1) && (sun_info.depth != 8) && |
| (sun_info.depth != 24) && (sun_info.depth != 32)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if ((sun_info.maptype != RMT_NONE) && (sun_info.maptype != RMT_EQUAL_RGB) && |
| (sun_info.maptype != RMT_RAW)) |
| ThrowReaderException(CoderError,"ColormapTypeNotSupported"); |
| image->columns=sun_info.width; |
| image->rows=sun_info.height; |
| image->depth=sun_info.depth <= 8 ? sun_info.depth : |
| MAGICKCORE_QUANTUM_DEPTH; |
| if (sun_info.depth < 24) |
| { |
| size_t |
| one; |
| |
| image->colors=sun_info.maplength; |
| one=1; |
| if (sun_info.maptype == RMT_NONE) |
| image->colors=one << sun_info.depth; |
| if (sun_info.maptype == RMT_EQUAL_RGB) |
| image->colors=sun_info.maplength/3; |
| if (image->colors == 0) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| switch (sun_info.maptype) |
| { |
| case RMT_NONE: |
| break; |
| case RMT_EQUAL_RGB: |
| { |
| unsigned char |
| *sun_colormap; |
| |
| /* |
| Read SUN raster colormap. |
| */ |
| sun_colormap=(unsigned char *) AcquireQuantumMemory(image->colors, |
| sizeof(*sun_colormap)); |
| if (sun_colormap == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| count=ReadBlob(image,image->colors,sun_colormap); |
| if (count != (ssize_t) image->colors) |
| { |
| sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap); |
| ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile"); |
| } |
| for (i=0; i < (ssize_t) image->colors; i++) |
| image->colormap[i].red=(MagickRealType) ScaleCharToQuantum( |
| sun_colormap[i]); |
| count=ReadBlob(image,image->colors,sun_colormap); |
| if (count != (ssize_t) image->colors) |
| { |
| sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap); |
| ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile"); |
| } |
| for (i=0; i < (ssize_t) image->colors; i++) |
| image->colormap[i].green=(MagickRealType) ScaleCharToQuantum( |
| sun_colormap[i]); |
| count=ReadBlob(image,image->colors,sun_colormap); |
| if (count != (ssize_t) image->colors) |
| { |
| sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap); |
| ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile"); |
| } |
| for (i=0; i < (ssize_t) image->colors; i++) |
| image->colormap[i].blue=(MagickRealType) ScaleCharToQuantum( |
| sun_colormap[i]); |
| sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap); |
| break; |
| } |
| case RMT_RAW: |
| { |
| unsigned char |
| *sun_colormap; |
| |
| /* |
| Read SUN raster colormap. |
| */ |
| sun_colormap=(unsigned char *) AcquireQuantumMemory(sun_info.maplength, |
| sizeof(*sun_colormap)); |
| if (sun_colormap == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| count=ReadBlob(image,sun_info.maplength,sun_colormap); |
| sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap); |
| if (count != (ssize_t) sun_info.maplength) |
| ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile"); |
| break; |
| } |
| default: |
| ThrowReaderException(CoderError,"ColormapTypeNotSupported"); |
| } |
| image->alpha_trait=sun_info.depth == 32 ? BlendPixelTrait : |
| UndefinedPixelTrait; |
| image->columns=sun_info.width; |
| image->rows=sun_info.height; |
| if (image_info->ping != MagickFalse) |
| { |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| status=SetImageExtent(image,image->columns,image->rows,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| if (sun_info.length == 0) |
| ThrowReaderException(ResourceLimitError,"ImproperImageHeader"); |
| number_pixels=(MagickSizeType) (image->columns*image->rows); |
| if ((sun_info.type != RT_ENCODED) && |
| ((number_pixels*sun_info.depth) > (8UL*sun_info.length))) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if (HeapOverflowSanityCheckGetSize(sun_info.width,sun_info.depth,&bytes_per_line) != MagickFalse) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if (sun_info.length > GetBlobSize(image)) |
| ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| sun_data=(unsigned char *) AcquireQuantumMemory(sun_info.length, |
| sizeof(*sun_data)); |
| if (sun_data == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| count=(ssize_t) ReadBlob(image,sun_info.length,sun_data); |
| if (count != (ssize_t) sun_info.length) |
| { |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| ThrowReaderException(CorruptImageError,"UnableToReadImageData"); |
| } |
| height=sun_info.height; |
| if ((height == 0) || (sun_info.width == 0) || (sun_info.depth == 0) || |
| ((bytes_per_line/sun_info.depth) != sun_info.width)) |
| { |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| ThrowReaderException(ResourceLimitError,"ImproperImageHeader"); |
| } |
| quantum=sun_info.depth == 1 ? 15 : 7; |
| bytes_per_line+=quantum; |
| bytes_per_line<<=1; |
| if ((bytes_per_line >> 1) != (sun_info.width*sun_info.depth+quantum)) |
| { |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| ThrowReaderException(ResourceLimitError,"ImproperImageHeader"); |
| } |
| bytes_per_line>>=4; |
| if (HeapOverflowSanityCheckGetSize(height,bytes_per_line,&pixels_length) != MagickFalse) |
| { |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| ThrowReaderException(ResourceLimitError,"ImproperImageHeader"); |
| } |
| sun_pixels=(unsigned char *) AcquireQuantumMemory(pixels_length+image->rows, |
| sizeof(*sun_pixels)); |
| if (sun_pixels == (unsigned char *) NULL) |
| { |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| (void) memset(sun_pixels,0,(pixels_length+image->rows)* |
| sizeof(*sun_pixels)); |
| if (sun_info.type == RT_ENCODED) |
| { |
| status=DecodeImage(sun_data,sun_info.length,sun_pixels,pixels_length); |
| if (status == MagickFalse) |
| { |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels); |
| ThrowReaderException(CorruptImageError,"UnableToReadImageData"); |
| } |
| } |
| else |
| { |
| if (sun_info.length > pixels_length) |
| { |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels); |
| ThrowReaderException(ResourceLimitError,"ImproperImageHeader"); |
| } |
| (void) memcpy(sun_pixels,sun_data,sun_info.length); |
| } |
| sun_data=(unsigned char *) RelinquishMagickMemory(sun_data); |
| /* |
| Convert SUN raster image to pixel packets. |
| */ |
| p=sun_pixels; |
| if (sun_info.depth == 1) |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < ((ssize_t) image->columns-7); x+=8) |
| { |
| for (bit=7; bit >= 0; bit--) |
| { |
| SetPixelIndex(image,(Quantum) ((*p) & (0x01 << bit) ? 0x00 : 0x01), |
| q); |
| q+=GetPixelChannels(image); |
| } |
| p++; |
| } |
| if ((image->columns % 8) != 0) |
| { |
| for (bit=7; bit >= (int) (8-(image->columns % 8)); bit--) |
| { |
| SetPixelIndex(image,(Quantum) ((*p) & (0x01 << bit) ? 0x00 : |
| 0x01),q); |
| q+=GetPixelChannels(image); |
| } |
| p++; |
| } |
| if ((((image->columns/8)+(image->columns % 8 ? 1 : 0)) % 2) != 0) |
| p++; |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| else |
| if (image->storage_class == PseudoClass) |
| { |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelIndex(image,ConstrainColormapIndex(image,*p,exception),q); |
| p++; |
| q+=GetPixelChannels(image); |
| } |
| if ((image->columns % 2) != 0) |
| p++; |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| else |
| { |
| size_t |
| bytes_per_pixel; |
| |
| bytes_per_pixel=3; |
| if (image->alpha_trait != UndefinedPixelTrait) |
| bytes_per_pixel++; |
| if (bytes_per_line == 0) |
| bytes_per_line=bytes_per_pixel*image->columns; |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| if (image->alpha_trait != UndefinedPixelTrait) |
| SetPixelAlpha(image,ScaleCharToQuantum(*p++),q); |
| if (sun_info.type == RT_STANDARD) |
| { |
| SetPixelBlue(image,ScaleCharToQuantum(*p++),q); |
| SetPixelGreen(image,ScaleCharToQuantum(*p++),q); |
| SetPixelRed(image,ScaleCharToQuantum(*p++),q); |
| } |
| else |
| { |
| SetPixelRed(image,ScaleCharToQuantum(*p++),q); |
| SetPixelGreen(image,ScaleCharToQuantum(*p++),q); |
| SetPixelBlue(image,ScaleCharToQuantum(*p++),q); |
| } |
| if (image->colors != 0) |
| { |
| SetPixelRed(image,ClampToQuantum(image->colormap[(ssize_t) |
| GetPixelRed(image,q)].red),q); |
| SetPixelGreen(image,ClampToQuantum(image->colormap[(ssize_t) |
| GetPixelGreen(image,q)].green),q); |
| SetPixelBlue(image,ClampToQuantum(image->colormap[(ssize_t) |
| GetPixelBlue(image,q)].blue),q); |
| } |
| q+=GetPixelChannels(image); |
| } |
| if (((bytes_per_pixel*image->columns) % 2) != 0) |
| p++; |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| if (image->storage_class == PseudoClass) |
| (void) SyncImage(image,exception); |
| sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_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; |
| sun_info.magic=ReadBlobMSBLong(image); |
| if (sun_info.magic == 0x59a66a95) |
| { |
| /* |
| Allocate next image structure. |
| */ |
| AcquireNextImage(image_info,image,exception); |
| if (GetNextImageInList(image) == (Image *) NULL) |
| { |
| status=MagickFalse; |
| break; |
| } |
| image=SyncNextImageInList(image); |
| status=SetImageProgress(image,LoadImagesTag,TellBlob(image), |
| GetBlobSize(image)); |
| if (status == MagickFalse) |
| break; |
| } |
| } while (sun_info.magic == 0x59a66a95); |
| (void) CloseBlob(image); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r S U N I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterSUNImage() adds attributes for the SUN 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 RegisterSUNImage method is: |
| % |
| % size_t RegisterSUNImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterSUNImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("SUN","RAS","SUN Rasterfile"); |
| entry->decoder=(DecodeImageHandler *) ReadSUNImage; |
| entry->encoder=(EncodeImageHandler *) WriteSUNImage; |
| entry->magick=(IsImageFormatHandler *) IsSUN; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| (void) RegisterMagickInfo(entry); |
| entry=AcquireMagickInfo("SUN","SUN","SUN Rasterfile"); |
| entry->decoder=(DecodeImageHandler *) ReadSUNImage; |
| entry->encoder=(EncodeImageHandler *) WriteSUNImage; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r S U N I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterSUNImage() removes format registrations made by the |
| % SUN module from the list of supported formats. |
| % |
| % The format of the UnregisterSUNImage method is: |
| % |
| % UnregisterSUNImage(void) |
| % |
| */ |
| ModuleExport void UnregisterSUNImage(void) |
| { |
| (void) UnregisterMagickInfo("RAS"); |
| (void) UnregisterMagickInfo("SUN"); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % W r i t e S U N I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % WriteSUNImage() writes an image in the SUN rasterfile format. |
| % |
| % The format of the WriteSUNImage method is: |
| % |
| % MagickBooleanType WriteSUNImage(const ImageInfo *image_info, |
| % Image *image,ExceptionInfo *exception) |
| % |
| % A description of each parameter follows. |
| % |
| % o image_info: the image info. |
| % |
| % o image: The image. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static MagickBooleanType WriteSUNImage(const ImageInfo *image_info,Image *image, |
| ExceptionInfo *exception) |
| { |
| #define RMT_EQUAL_RGB 1 |
| #define RMT_NONE 0 |
| #define RMT_RAW 2 |
| #define RT_STANDARD 1 |
| #define RT_FORMAT_RGB 3 |
| |
| typedef struct _SUNInfo |
| { |
| unsigned int |
| magic, |
| width, |
| height, |
| depth, |
| length, |
| type, |
| maptype, |
| maplength; |
| } SUNInfo; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| scene; |
| |
| MagickSizeType |
| number_pixels; |
| |
| register const Quantum |
| *p; |
| |
| register ssize_t |
| i, |
| x; |
| |
| size_t |
| imageListLength; |
| |
| ssize_t |
| y; |
| |
| SUNInfo |
| sun_info; |
| |
| /* |
| Open output image file. |
| */ |
| assert(image_info != (const ImageInfo *) NULL); |
| assert(image_info->signature == MagickCoreSignature); |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickCoreSignature); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickCoreSignature); |
| status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| scene=0; |
| imageListLength=GetImageListLength(image); |
| do |
| { |
| /* |
| Initialize SUN raster file header. |
| */ |
| (void) TransformImageColorspace(image,sRGBColorspace,exception); |
| sun_info.magic=0x59a66a95; |
| if ((image->columns != (unsigned int) image->columns) || |
| (image->rows != (unsigned int) image->rows)) |
| ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit"); |
| sun_info.width=(unsigned int) image->columns; |
| sun_info.height=(unsigned int) image->rows; |
| sun_info.type=(unsigned int) |
| (image->storage_class == DirectClass ? RT_FORMAT_RGB : RT_STANDARD); |
| sun_info.maptype=RMT_NONE; |
| sun_info.maplength=0; |
| number_pixels=(MagickSizeType) image->columns*image->rows; |
| if ((4*number_pixels) != (size_t) (4*number_pixels)) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| if (image->storage_class == DirectClass) |
| { |
| /* |
| Full color SUN raster. |
| */ |
| sun_info.depth=(unsigned int) image->alpha_trait != |
| UndefinedPixelTrait ? 32U : 24U; |
| sun_info.length=(unsigned int) ((image->alpha_trait != |
| UndefinedPixelTrait ? 4 : 3)*number_pixels); |
| sun_info.length+=sun_info.length & 0x01 ? (unsigned int) image->rows : |
| 0; |
| } |
| else |
| if (SetImageMonochrome(image,exception) != MagickFalse) |
| { |
| /* |
| Monochrome SUN raster. |
| */ |
| sun_info.depth=1; |
| sun_info.length=(unsigned int) (((image->columns+7) >> 3)* |
| image->rows); |
| sun_info.length+=(unsigned int) (((image->columns/8)+(image->columns % |
| 8 ? 1 : 0)) % 2 ? image->rows : 0); |
| } |
| else |
| { |
| /* |
| Colormapped SUN raster. |
| */ |
| sun_info.depth=8; |
| sun_info.length=(unsigned int) number_pixels; |
| sun_info.length+=(unsigned int) (image->columns & 0x01 ? image->rows : |
| 0); |
| sun_info.maptype=RMT_EQUAL_RGB; |
| sun_info.maplength=(unsigned int) (3*image->colors); |
| } |
| /* |
| Write SUN header. |
| */ |
| (void) WriteBlobMSBLong(image,sun_info.magic); |
| (void) WriteBlobMSBLong(image,sun_info.width); |
| (void) WriteBlobMSBLong(image,sun_info.height); |
| (void) WriteBlobMSBLong(image,sun_info.depth); |
| (void) WriteBlobMSBLong(image,sun_info.length); |
| (void) WriteBlobMSBLong(image,sun_info.type); |
| (void) WriteBlobMSBLong(image,sun_info.maptype); |
| (void) WriteBlobMSBLong(image,sun_info.maplength); |
| /* |
| Convert MIFF to SUN raster pixels. |
| */ |
| x=0; |
| y=0; |
| if (image->storage_class == DirectClass) |
| { |
| register unsigned char |
| *q; |
| |
| size_t |
| bytes_per_pixel, |
| length; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| Allocate memory for pixels. |
| */ |
| bytes_per_pixel=3; |
| if (image->alpha_trait != UndefinedPixelTrait) |
| bytes_per_pixel++; |
| length=image->columns; |
| pixels=(unsigned char *) AcquireQuantumMemory(length,4*sizeof(*pixels)); |
| if (pixels == (unsigned char *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| /* |
| Convert DirectClass packet to SUN RGB pixel. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| q=pixels; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| if (image->alpha_trait != UndefinedPixelTrait) |
| *q++=ScaleQuantumToChar(GetPixelAlpha(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| p+=GetPixelChannels(image); |
| } |
| if (((bytes_per_pixel*image->columns) & 0x01) != 0) |
| *q++='\0'; /* pad scanline */ |
| (void) WriteBlob(image,(size_t) (q-pixels),pixels); |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| } |
| else |
| if (SetImageMonochrome(image,exception) != MagickFalse) |
| { |
| register unsigned char |
| bit, |
| byte; |
| |
| /* |
| Convert PseudoClass image to a SUN monochrome image. |
| */ |
| (void) SetImageType(image,BilevelType,exception); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| bit=0; |
| byte=0; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| byte<<=1; |
| if (GetPixelLuma(image,p) < (QuantumRange/2.0)) |
| byte|=0x01; |
| bit++; |
| if (bit == 8) |
| { |
| (void) WriteBlobByte(image,byte); |
| bit=0; |
| byte=0; |
| } |
| p+=GetPixelChannels(image); |
| } |
| if (bit != 0) |
| (void) WriteBlobByte(image,(unsigned char) (byte << (8-bit))); |
| if ((((image->columns/8)+ |
| (image->columns % 8 ? 1 : 0)) % 2) != 0) |
| (void) WriteBlobByte(image,0); /* pad scanline */ |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| else |
| { |
| /* |
| Dump colormap to file. |
| */ |
| for (i=0; i < (ssize_t) image->colors; i++) |
| (void) WriteBlobByte(image,ScaleQuantumToChar( |
| ClampToQuantum(image->colormap[i].red))); |
| for (i=0; i < (ssize_t) image->colors; i++) |
| (void) WriteBlobByte(image,ScaleQuantumToChar( |
| ClampToQuantum(image->colormap[i].green))); |
| for (i=0; i < (ssize_t) image->colors; i++) |
| (void) WriteBlobByte(image,ScaleQuantumToChar( |
| ClampToQuantum(image->colormap[i].blue))); |
| /* |
| Convert PseudoClass packet to SUN colormapped pixel. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| (void) WriteBlobByte(image,(unsigned char) |
| GetPixelIndex(image,p)); |
| p+=GetPixelChannels(image); |
| } |
| if (image->columns & 0x01) |
| (void) WriteBlobByte(image,0); /* pad scanline */ |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| if (GetNextImageInList(image) == (Image *) NULL) |
| break; |
| image=SyncNextImageInList(image); |
| status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength); |
| if (status == MagickFalse) |
| break; |
| } while (image_info->adjoin != MagickFalse); |
| (void) CloseBlob(image); |
| return(MagickTrue); |
| } |
