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ImageMagick-7.0.10-22 /
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Name
Size
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.deps
[ DIR ]
drwxrwxr-x
.libs
[ DIR ]
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Code Editor : viff.c
/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % V V IIIII FFFFF FFFFF % % V V I F F % % V V I FFF FFF % % V V I F F % % V IIIII F F % % % % % % Read/Write Khoros Visualization 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/property.h" #include "MagickCore/quantum-private.h" #include "MagickCore/static.h" #include "MagickCore/string_.h" #include "MagickCore/module.h" /* Forward declarations. */ static MagickBooleanType WriteVIFFImage(const ImageInfo *,Image *,ExceptionInfo *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s V I F F % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsVIFF() returns MagickTrue if the image format type, identified by the % magick string, is VIFF. % % The format of the IsVIFF method is: % % MagickBooleanType IsVIFF(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 IsVIFF(const unsigned char *magick,const size_t length) { if (length < 2) return(MagickFalse); if (memcmp(magick,"\253\001",2) == 0) return(MagickTrue); return(MagickFalse); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d V I F F I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadVIFFImage() reads a Khoros Visualization 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 ReadVIFFImage method is: % % Image *ReadVIFFImage(const ImageInfo *image_info, % ExceptionInfo *exception) % % A description of each parameter follows: % % o image: Method ReadVIFFImage 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: the image info. % % o exception: return any errors or warnings in this structure. % */ static Image *ReadVIFFImage(const ImageInfo *image_info, ExceptionInfo *exception) { #define VFF_CM_genericRGB 15 #define VFF_CM_ntscRGB 1 #define VFF_CM_NONE 0 #define VFF_DEP_DECORDER 0x4 #define VFF_DEP_NSORDER 0x8 #define VFF_DES_RAW 0 #define VFF_LOC_IMPLICIT 1 #define VFF_MAPTYP_NONE 0 #define VFF_MAPTYP_1_BYTE 1 #define VFF_MAPTYP_2_BYTE 2 #define VFF_MAPTYP_4_BYTE 4 #define VFF_MAPTYP_FLOAT 5 #define VFF_MAPTYP_DOUBLE 7 #define VFF_MS_NONE 0 #define VFF_MS_ONEPERBAND 1 #define VFF_MS_SHARED 3 #define VFF_TYP_BIT 0 #define VFF_TYP_1_BYTE 1 #define VFF_TYP_2_BYTE 2 #define VFF_TYP_4_BYTE 4 #define VFF_TYP_FLOAT 5 #define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier, file_type, release, version, machine_dependency, reserve[3]; char comment[512]; unsigned int rows, columns, subrows; int x_offset, y_offset; float x_bits_per_pixel, y_bits_per_pixel; unsigned int location_type, location_dimension, number_of_images, number_data_bands, data_storage_type, data_encode_scheme, map_scheme, map_storage_type, map_rows, map_columns, map_subrows, map_enable, maps_per_cycle, color_space_model; } ViffInfo; double min_value, scale_factor, value; Image *image; int bit; MagickBooleanType status; MagickSizeType number_pixels; register ssize_t x; register Quantum *q; register ssize_t i; register unsigned char *p; size_t bytes_per_pixel, max_packets, quantum; ssize_t count, y; unsigned char *pixels; unsigned long lsb_first; ViffInfo viff_info; /* 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 VIFF header (1024 bytes). */ count=ReadBlob(image,1,&viff_info.identifier); do { /* Verify VIFF identifier. */ if ((count != 1) || ((unsigned char) viff_info.identifier != 0xab)) ThrowReaderException(CorruptImageError,"NotAVIFFImage"); /* Initialize VIFF image. */ (void) ReadBlob(image,sizeof(viff_info.file_type),&viff_info.file_type); (void) ReadBlob(image,sizeof(viff_info.release),&viff_info.release); (void) ReadBlob(image,sizeof(viff_info.version),&viff_info.version); (void) ReadBlob(image,sizeof(viff_info.machine_dependency), &viff_info.machine_dependency); (void) ReadBlob(image,sizeof(viff_info.reserve),viff_info.reserve); count=ReadBlob(image,512,(unsigned char *) viff_info.comment); if (count != 512) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); viff_info.comment[511]='\0'; if (strlen(viff_info.comment) > 4) (void) SetImageProperty(image,"comment",viff_info.comment,exception); if ((viff_info.machine_dependency == VFF_DEP_DECORDER) || (viff_info.machine_dependency == VFF_DEP_NSORDER)) image->endian=LSBEndian; else image->endian=MSBEndian; viff_info.rows=ReadBlobLong(image); viff_info.columns=ReadBlobLong(image); viff_info.subrows=ReadBlobLong(image); viff_info.x_offset=ReadBlobSignedLong(image); viff_info.y_offset=ReadBlobSignedLong(image); viff_info.x_bits_per_pixel=(float) ReadBlobLong(image); viff_info.y_bits_per_pixel=(float) ReadBlobLong(image); viff_info.location_type=ReadBlobLong(image); viff_info.location_dimension=ReadBlobLong(image); viff_info.number_of_images=ReadBlobLong(image); viff_info.number_data_bands=ReadBlobLong(image); viff_info.data_storage_type=ReadBlobLong(image); viff_info.data_encode_scheme=ReadBlobLong(image); viff_info.map_scheme=ReadBlobLong(image); viff_info.map_storage_type=ReadBlobLong(image); viff_info.map_rows=ReadBlobLong(image); viff_info.map_columns=ReadBlobLong(image); viff_info.map_subrows=ReadBlobLong(image); viff_info.map_enable=ReadBlobLong(image); viff_info.maps_per_cycle=ReadBlobLong(image); viff_info.color_space_model=ReadBlobLong(image); for (i=0; i < 420; i++) (void) ReadBlobByte(image); if (EOFBlob(image) != MagickFalse) ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile"); number_pixels=(MagickSizeType) viff_info.columns*viff_info.rows; if (number_pixels > GetBlobSize(image)) ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); if (number_pixels != (size_t) number_pixels) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); if (number_pixels == 0) ThrowReaderException(CoderError,"ImageColumnOrRowSizeIsNotSupported"); image->columns=viff_info.rows; image->rows=viff_info.columns; image->depth=viff_info.x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH; image->alpha_trait=viff_info.number_data_bands == 4 ? BlendPixelTrait : UndefinedPixelTrait; status=SetImageExtent(image,image->columns,image->rows,exception); if (status == MagickFalse) return(DestroyImageList(image)); (void) SetImageBackgroundColor(image,exception); /* Verify that we can read this VIFF image. */ if ((viff_info.number_data_bands < 1) || (viff_info.number_data_bands > 4)) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); if ((viff_info.data_storage_type != VFF_TYP_BIT) && (viff_info.data_storage_type != VFF_TYP_1_BYTE) && (viff_info.data_storage_type != VFF_TYP_2_BYTE) && (viff_info.data_storage_type != VFF_TYP_4_BYTE) && (viff_info.data_storage_type != VFF_TYP_FLOAT) && (viff_info.data_storage_type != VFF_TYP_DOUBLE)) ThrowReaderException(CoderError,"DataStorageTypeIsNotSupported"); if (viff_info.data_encode_scheme != VFF_DES_RAW) ThrowReaderException(CoderError,"DataEncodingSchemeIsNotSupported"); if ((viff_info.map_storage_type != VFF_MAPTYP_NONE) && (viff_info.map_storage_type != VFF_MAPTYP_1_BYTE) && (viff_info.map_storage_type != VFF_MAPTYP_2_BYTE) && (viff_info.map_storage_type != VFF_MAPTYP_4_BYTE) && (viff_info.map_storage_type != VFF_MAPTYP_FLOAT) && (viff_info.map_storage_type != VFF_MAPTYP_DOUBLE)) ThrowReaderException(CoderError,"MapStorageTypeIsNotSupported"); if ((viff_info.color_space_model != VFF_CM_NONE) && (viff_info.color_space_model != VFF_CM_ntscRGB) && (viff_info.color_space_model != VFF_CM_genericRGB)) ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported"); if (viff_info.location_type != VFF_LOC_IMPLICIT) ThrowReaderException(CoderError,"LocationTypeIsNotSupported"); if (viff_info.number_of_images != 1) ThrowReaderException(CoderError,"NumberOfImagesIsNotSupported"); if (viff_info.map_rows == 0) viff_info.map_scheme=VFF_MS_NONE; switch ((int) viff_info.map_scheme) { case VFF_MS_NONE: { if (viff_info.number_data_bands < 3) { /* Create linear color ramp. */ if (viff_info.data_storage_type == VFF_TYP_BIT) image->colors=2; else if (viff_info.data_storage_type == VFF_MAPTYP_1_BYTE) image->colors=256UL; else image->colors=image->depth <= 8 ? 256UL : 65536UL; status=AcquireImageColormap(image,image->colors,exception); if (status == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); } break; } case VFF_MS_ONEPERBAND: case VFF_MS_SHARED: { unsigned char *viff_colormap; /* Allocate VIFF colormap. */ switch ((int) viff_info.map_storage_type) { case VFF_MAPTYP_1_BYTE: bytes_per_pixel=1; break; case VFF_MAPTYP_2_BYTE: bytes_per_pixel=2; break; case VFF_MAPTYP_4_BYTE: bytes_per_pixel=4; break; case VFF_MAPTYP_FLOAT: bytes_per_pixel=4; break; case VFF_MAPTYP_DOUBLE: bytes_per_pixel=8; break; default: bytes_per_pixel=1; break; } image->colors=viff_info.map_columns; if ((MagickSizeType) (viff_info.map_rows*image->colors) > GetBlobSize(image)) ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); if ((MagickSizeType) viff_info.map_rows > GetBlobSize(image)) ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); if ((MagickSizeType) viff_info.map_rows > (viff_info.map_rows*bytes_per_pixel*sizeof(*viff_colormap))) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); viff_colormap=(unsigned char *) AcquireQuantumMemory(image->colors, viff_info.map_rows*bytes_per_pixel*sizeof(*viff_colormap)); if (viff_colormap == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); /* Read VIFF raster colormap. */ count=ReadBlob(image,bytes_per_pixel*image->colors*viff_info.map_rows, viff_colormap); lsb_first=1; if (*(char *) &lsb_first && ((viff_info.machine_dependency != VFF_DEP_DECORDER) && (viff_info.machine_dependency != VFF_DEP_NSORDER))) switch ((int) viff_info.map_storage_type) { case VFF_MAPTYP_2_BYTE: { MSBOrderShort(viff_colormap,(bytes_per_pixel*image->colors* viff_info.map_rows)); break; } case VFF_MAPTYP_4_BYTE: case VFF_MAPTYP_FLOAT: { MSBOrderLong(viff_colormap,(bytes_per_pixel*image->colors* viff_info.map_rows)); break; } default: break; } for (i=0; i < (ssize_t) (viff_info.map_rows*image->colors); i++) { switch ((int) viff_info.map_storage_type) { case VFF_MAPTYP_2_BYTE: value=1.0*((short *) viff_colormap)[i]; break; case VFF_MAPTYP_4_BYTE: value=1.0*((int *) viff_colormap)[i]; break; case VFF_MAPTYP_FLOAT: value=((float *) viff_colormap)[i]; break; case VFF_MAPTYP_DOUBLE: value=((double *) viff_colormap)[i]; break; default: value=1.0*viff_colormap[i]; break; } if (i < (ssize_t) image->colors) { image->colormap[i].red=(MagickRealType) ScaleCharToQuantum((unsigned char) value); image->colormap[i].green=(MagickRealType) ScaleCharToQuantum((unsigned char) value); image->colormap[i].blue=(MagickRealType) ScaleCharToQuantum((unsigned char) value); } else if (i < (ssize_t) (2*image->colors)) image->colormap[i % image->colors].green=(MagickRealType) ScaleCharToQuantum((unsigned char) value); else if (i < (ssize_t) (3*image->colors)) image->colormap[i % image->colors].blue=(MagickRealType) ScaleCharToQuantum((unsigned char) value); } viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap); break; } default: ThrowReaderException(CoderError,"ColormapTypeNotSupported"); } if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) if (image->scene >= (image_info->scene+image_info->number_scenes-1)) break; if (viff_info.data_storage_type == VFF_TYP_BIT) { /* Create bi-level colormap. */ image->colors=2; if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); image->colorspace=GRAYColorspace; } /* Allocate VIFF pixels. */ switch ((int) viff_info.data_storage_type) { case VFF_TYP_2_BYTE: bytes_per_pixel=2; break; case VFF_TYP_4_BYTE: bytes_per_pixel=4; break; case VFF_TYP_FLOAT: bytes_per_pixel=4; break; case VFF_TYP_DOUBLE: bytes_per_pixel=8; break; default: bytes_per_pixel=1; break; } if (viff_info.data_storage_type == VFF_TYP_BIT) { if (HeapOverflowSanityCheckGetSize((image->columns+7UL) >> 3UL,image->rows,&max_packets) != MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); } else { if (HeapOverflowSanityCheckGetSize((size_t) number_pixels,viff_info.number_data_bands,&max_packets) != MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); } if ((MagickSizeType) (bytes_per_pixel*max_packets) > GetBlobSize(image)) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); pixels=(unsigned char *) AcquireQuantumMemory((size_t) MagickMax( number_pixels,max_packets),bytes_per_pixel*sizeof(*pixels)); if (pixels == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); (void) memset(pixels,0,MagickMax(number_pixels,max_packets)* bytes_per_pixel*sizeof(*pixels)); count=ReadBlob(image,bytes_per_pixel*max_packets,pixels); lsb_first=1; if (*(char *) &lsb_first && ((viff_info.machine_dependency != VFF_DEP_DECORDER) && (viff_info.machine_dependency != VFF_DEP_NSORDER))) switch ((int) viff_info.data_storage_type) { case VFF_TYP_2_BYTE: { MSBOrderShort(pixels,bytes_per_pixel*max_packets); break; } case VFF_TYP_4_BYTE: case VFF_TYP_FLOAT: { MSBOrderLong(pixels,bytes_per_pixel*max_packets); break; } default: break; } min_value=0.0; scale_factor=1.0; if ((viff_info.data_storage_type != VFF_TYP_1_BYTE) && (viff_info.map_scheme == VFF_MS_NONE)) { double max_value; /* Determine scale factor. */ switch ((int) viff_info.data_storage_type) { case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[0]; break; case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[0]; break; case VFF_TYP_FLOAT: value=((float *) pixels)[0]; break; case VFF_TYP_DOUBLE: value=((double *) pixels)[0]; break; default: value=1.0*pixels[0]; break; } max_value=value; min_value=value; for (i=0; i < (ssize_t) max_packets; i++) { switch ((int) viff_info.data_storage_type) { case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[i]; break; case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[i]; break; case VFF_TYP_FLOAT: value=((float *) pixels)[i]; break; case VFF_TYP_DOUBLE: value=((double *) pixels)[i]; break; default: value=1.0*pixels[i]; break; } if (value > max_value) max_value=value; else if (value < min_value) min_value=value; } if ((min_value == 0) && (max_value == 0)) scale_factor=0; else if (min_value == max_value) { scale_factor=(double) QuantumRange/min_value; min_value=0; } else scale_factor=(double) QuantumRange/(max_value-min_value); } /* Convert pixels to Quantum size. */ p=(unsigned char *) pixels; for (i=0; i < (ssize_t) max_packets; i++) { switch ((int) viff_info.data_storage_type) { case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[i]; break; case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[i]; break; case VFF_TYP_FLOAT: value=((float *) pixels)[i]; break; case VFF_TYP_DOUBLE: value=((double *) pixels)[i]; break; default: value=1.0*pixels[i]; break; } if (viff_info.map_scheme == VFF_MS_NONE) { value=(value-min_value)*scale_factor; if (value > QuantumRange) value=QuantumRange; else if (value < 0) value=0; } *p=(unsigned char) ((Quantum) value); p++; } /* Convert VIFF raster image to pixel packets. */ p=(unsigned char *) pixels; if (viff_info.data_storage_type == VFF_TYP_BIT) { /* Convert bitmap scanline. */ 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=0; bit < 8; bit++) { quantum=(size_t) ((*p) & (0x01 << bit) ? 0 : 1); SetPixelRed(image,quantum == 0 ? 0 : QuantumRange,q); SetPixelGreen(image,quantum == 0 ? 0 : QuantumRange,q); SetPixelBlue(image,quantum == 0 ? 0 : QuantumRange,q); if (image->storage_class == PseudoClass) SetPixelIndex(image,(Quantum) quantum,q); q+=GetPixelChannels(image); } p++; } if ((image->columns % 8) != 0) { for (bit=0; bit < (int) (image->columns % 8); bit++) { quantum=(size_t) ((*p) & (0x01 << bit) ? 0 : 1); SetPixelRed(image,quantum == 0 ? 0 : QuantumRange,q); SetPixelGreen(image,quantum == 0 ? 0 : QuantumRange,q); SetPixelBlue(image,quantum == 0 ? 0 : QuantumRange,q); if (image->storage_class == PseudoClass) SetPixelIndex(image,(Quantum) quantum,q); q+=GetPixelChannels(image); } 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,*p++,q); q+=GetPixelChannels(image); } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } } else { /* Convert DirectColor scanline. */ number_pixels=(MagickSizeType) image->columns*image->rows; 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++) { SetPixelRed(image,ScaleCharToQuantum(*p),q); SetPixelGreen(image,ScaleCharToQuantum(*(p+number_pixels)),q); SetPixelBlue(image,ScaleCharToQuantum(*(p+2*number_pixels)),q); if (image->colors != 0) { ssize_t index; index=(ssize_t) GetPixelRed(image,q); SetPixelRed(image,ClampToQuantum(image->colormap[ ConstrainColormapIndex(image,index,exception)].red),q); index=(ssize_t) GetPixelGreen(image,q); SetPixelGreen(image,ClampToQuantum(image->colormap[ ConstrainColormapIndex(image,index,exception)].green),q); index=(ssize_t) GetPixelBlue(image,q); SetPixelBlue(image,ClampToQuantum(image->colormap[ ConstrainColormapIndex(image,index,exception)].blue),q); } SetPixelAlpha(image,image->alpha_trait != UndefinedPixelTrait ? ScaleCharToQuantum(*(p+number_pixels*3)) : OpaqueAlpha,q); p++; q+=GetPixelChannels(image); } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } } } pixels=(unsigned char *) RelinquishMagickMemory(pixels); if (image->storage_class == PseudoClass) (void) SyncImage(image,exception); 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; count=ReadBlob(image,1,&viff_info.identifier); if ((count == 1) && (viff_info.identifier == 0xab)) { /* 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 ((count != 0) && (viff_info.identifier == 0xab)); (void) CloseBlob(image); if (status == MagickFalse) return(DestroyImageList(image)); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e g i s t e r V I F F I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % RegisterVIFFImage() adds properties for the VIFF image format to % the list of supported formats. The properties 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 RegisterVIFFImage method is: % % size_t RegisterVIFFImage(void) % */ ModuleExport size_t RegisterVIFFImage(void) { MagickInfo *entry; entry=AcquireMagickInfo("VIFF","VIFF","Khoros Visualization image"); entry->decoder=(DecodeImageHandler *) ReadVIFFImage; entry->encoder=(EncodeImageHandler *) WriteVIFFImage; entry->magick=(IsImageFormatHandler *) IsVIFF; entry->flags|=CoderDecoderSeekableStreamFlag; (void) RegisterMagickInfo(entry); entry=AcquireMagickInfo("VIFF","XV","Khoros Visualization image"); entry->decoder=(DecodeImageHandler *) ReadVIFFImage; entry->encoder=(EncodeImageHandler *) WriteVIFFImage; entry->flags|=CoderDecoderSeekableStreamFlag; (void) RegisterMagickInfo(entry); return(MagickImageCoderSignature); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % U n r e g i s t e r V I F F I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % UnregisterVIFFImage() removes format registrations made by the % VIFF module from the list of supported formats. % % The format of the UnregisterVIFFImage method is: % % UnregisterVIFFImage(void) % */ ModuleExport void UnregisterVIFFImage(void) { (void) UnregisterMagickInfo("VIFF"); (void) UnregisterMagickInfo("XV"); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e V I F F I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WriteVIFFImage() writes an image to a file in the VIFF image format. % % The format of the WriteVIFFImage method is: % % MagickBooleanType WriteVIFFImage(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 WriteVIFFImage(const ImageInfo *image_info, Image *image,ExceptionInfo *exception) { #define VFF_CM_genericRGB 15 #define VFF_CM_NONE 0 #define VFF_DEP_IEEEORDER 0x2 #define VFF_DES_RAW 0 #define VFF_LOC_IMPLICIT 1 #define VFF_MAPTYP_NONE 0 #define VFF_MAPTYP_1_BYTE 1 #define VFF_MS_NONE 0 #define VFF_MS_ONEPERBAND 1 #define VFF_TYP_BIT 0 #define VFF_TYP_1_BYTE 1 typedef struct _ViffInfo { char identifier, file_type, release, version, machine_dependency, reserve[3], comment[512]; size_t rows, columns, subrows; int x_offset, y_offset; unsigned int x_bits_per_pixel, y_bits_per_pixel, location_type, location_dimension, number_of_images, number_data_bands, data_storage_type, data_encode_scheme, map_scheme, map_storage_type, map_rows, map_columns, map_subrows, map_enable, maps_per_cycle, color_space_model; } ViffInfo; const char *value; MagickBooleanType status; MagickOffsetType scene; MagickSizeType number_pixels, packets; MemoryInfo *pixel_info; register const Quantum *p; register ssize_t x; register ssize_t i; register unsigned char *q; size_t imageListLength; ssize_t y; unsigned char *pixels; ViffInfo viff_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); (void) memset(&viff_info,0,sizeof(ViffInfo)); scene=0; imageListLength=GetImageListLength(image); do { /* Initialize VIFF image structure. */ (void) TransformImageColorspace(image,sRGBColorspace,exception); DisableMSCWarning(4310) viff_info.identifier=(char) 0xab; RestoreMSCWarning viff_info.file_type=1; viff_info.release=1; viff_info.version=3; viff_info.machine_dependency=VFF_DEP_IEEEORDER; /* IEEE byte ordering */ *viff_info.comment='\0'; value=GetImageProperty(image,"comment",exception); if (value != (const char *) NULL) (void) CopyMagickString(viff_info.comment,value,MagickMin(strlen(value), 511)+1); viff_info.rows=image->columns; viff_info.columns=image->rows; viff_info.subrows=0; viff_info.x_offset=(~0); viff_info.y_offset=(~0); viff_info.x_bits_per_pixel=0; viff_info.y_bits_per_pixel=0; viff_info.location_type=VFF_LOC_IMPLICIT; viff_info.location_dimension=0; viff_info.number_of_images=1; viff_info.data_encode_scheme=VFF_DES_RAW; viff_info.map_scheme=VFF_MS_NONE; viff_info.map_storage_type=VFF_MAPTYP_NONE; viff_info.map_rows=0; viff_info.map_columns=0; viff_info.map_subrows=0; viff_info.map_enable=1; /* no colormap */ viff_info.maps_per_cycle=0; number_pixels=(MagickSizeType) image->columns*image->rows; if (image->storage_class == DirectClass) { /* Full color VIFF raster. */ viff_info.number_data_bands=image->alpha_trait ? 4U : 3U; viff_info.color_space_model=VFF_CM_genericRGB; viff_info.data_storage_type=VFF_TYP_1_BYTE; packets=viff_info.number_data_bands*number_pixels; } else { viff_info.number_data_bands=1; viff_info.color_space_model=VFF_CM_NONE; viff_info.data_storage_type=VFF_TYP_1_BYTE; packets=number_pixels; if (SetImageGray(image,exception) == MagickFalse) { /* Colormapped VIFF raster. */ viff_info.map_scheme=VFF_MS_ONEPERBAND; viff_info.map_storage_type=VFF_MAPTYP_1_BYTE; viff_info.map_rows=3; viff_info.map_columns=(unsigned int) image->colors; } else if (image->colors <= 2) { /* Monochrome VIFF raster. */ viff_info.data_storage_type=VFF_TYP_BIT; packets=((image->columns+7) >> 3)*image->rows; } } /* Write VIFF image header (pad to 1024 bytes). */ (void) WriteBlob(image,sizeof(viff_info.identifier),(unsigned char *) &viff_info.identifier); (void) WriteBlob(image,sizeof(viff_info.file_type),(unsigned char *) &viff_info.file_type); (void) WriteBlob(image,sizeof(viff_info.release),(unsigned char *) &viff_info.release); (void) WriteBlob(image,sizeof(viff_info.version),(unsigned char *) &viff_info.version); (void) WriteBlob(image,sizeof(viff_info.machine_dependency), (unsigned char *) &viff_info.machine_dependency); (void) WriteBlob(image,sizeof(viff_info.reserve),(unsigned char *) viff_info.reserve); (void) WriteBlob(image,512,(unsigned char *) viff_info.comment); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.rows); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.columns); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.subrows); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.x_offset); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.y_offset); viff_info.x_bits_per_pixel=(unsigned int) ((63 << 24) | (128 << 16)); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.x_bits_per_pixel); viff_info.y_bits_per_pixel=(unsigned int) ((63 << 24) | (128 << 16)); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.y_bits_per_pixel); (void) WriteBlobMSBLong(image,viff_info.location_type); (void) WriteBlobMSBLong(image,viff_info.location_dimension); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.number_of_images); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.number_data_bands); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.data_storage_type); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.data_encode_scheme); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_scheme); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_storage_type); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_rows); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_columns); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_subrows); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_enable); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.maps_per_cycle); (void) WriteBlobMSBLong(image,(unsigned int) viff_info.color_space_model); for (i=0; i < 420; i++) (void) WriteBlobByte(image,'\0'); /* Convert MIFF to VIFF raster pixels. */ pixel_info=AcquireVirtualMemory((size_t) packets,sizeof(*pixels)); if (pixel_info == (MemoryInfo *) NULL) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info); q=pixels; if (image->storage_class == DirectClass) { /* Convert DirectClass packet to VIFF RGB pixel. */ number_pixels=(MagickSizeType) image->columns*image->rows; 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++) { *q=ScaleQuantumToChar(GetPixelRed(image,p)); *(q+number_pixels)=ScaleQuantumToChar(GetPixelGreen(image,p)); *(q+number_pixels*2)=ScaleQuantumToChar(GetPixelBlue(image,p)); if (image->alpha_trait != UndefinedPixelTrait) *(q+number_pixels*3)=ScaleQuantumToChar((Quantum) (GetPixelAlpha(image,p))); p+=GetPixelChannels(image); q++; } if (image->previous == (Image *) NULL) { status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } } } else if (SetImageGray(image,exception) == MagickFalse) { unsigned char *viff_colormap; /* Dump colormap to file. */ viff_colormap=(unsigned char *) AcquireQuantumMemory(image->colors, 3*sizeof(*viff_colormap)); if (viff_colormap == (unsigned char *) NULL) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); q=viff_colormap; for (i=0; i < (ssize_t) image->colors; i++) *q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].red)); for (i=0; i < (ssize_t) image->colors; i++) *q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].green)); for (i=0; i < (ssize_t) image->colors; i++) *q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].blue)); (void) WriteBlob(image,3*image->colors,viff_colormap); viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap); /* Convert PseudoClass packet to VIFF colormapped pixels. */ q=pixels; 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++) { *q++=(unsigned char) GetPixelIndex(image,p); p+=GetPixelChannels(image); } if (image->previous == (Image *) NULL) { status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } } } else if (image->colors <= 2) { ssize_t x, y; register unsigned char bit, byte; /* Convert PseudoClass image to a VIFF monochrome image. */ 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|=0x80; bit++; if (bit == 8) { *q++=byte; bit=0; byte=0; } p+=GetPixelChannels(image); } if (bit != 0) *q++=byte >> (8-bit); if (image->previous == (Image *) NULL) { status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,image->rows); if (status == MagickFalse) break; } } } else { /* Convert PseudoClass packet to VIFF grayscale 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++) { *q++=(unsigned char) ClampToQuantum(GetPixelLuma(image,p)); p+=GetPixelChannels(image); } if (image->previous == (Image *) NULL) { status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,image->rows); if (status == MagickFalse) break; } } } (void) WriteBlob(image,(size_t) packets,pixels); pixel_info=RelinquishVirtualMemory(pixel_info); 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); }
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