/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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 % % John Cristy % % July 1992 % % % % % % Copyright 1999-2007 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/color.h" #include "magick/color-private.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/property.h" #include "magick/quantum-private.h" #include "magick/static.h" #include "magick/string_.h" #include "magick/module.h" /* Forward declarations. */ static MagickBooleanType WriteVIFFImage(const ImageInfo *,Image *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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: This string is generally the first few bytes of an image file % or blob. % % 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 long rows, columns, subrows; long x_offset, y_offset; float x_bits_per_pixel, y_bits_per_pixel; unsigned long 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; long y; MagickBooleanType status; MagickSizeType number_pixels; register IndexPacket *indexes; register long x; register PixelPacket *q; register long i; register unsigned char *p; ssize_t count; unsigned char buffer[7], *viff_pixels; unsigned long bytes_per_pixel, lsb_first, max_packets, quantum; ViffInfo viff_info; /* 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=AllocateImage(image_info); 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 == 0) || ((unsigned char) viff_info.identifier != 0xab)) ThrowReaderException(CorruptImageError,"NotAVIFFImage"); /* Initialize VIFF image. */ count=ReadBlob(image,7,buffer); viff_info.file_type=buffer[0]; viff_info.release=buffer[1]; viff_info.version=buffer[2]; viff_info.machine_dependency=buffer[3]; count=ReadBlob(image,512,(unsigned char *) viff_info.comment); viff_info.comment[511]='\0'; if (strlen(viff_info.comment) > 4) (void) SetImageProperty(image,"comment",viff_info.comment); if ((viff_info.machine_dependency == VFF_DEP_DECORDER) || (viff_info.machine_dependency == VFF_DEP_NSORDER)) { viff_info.rows=ReadBlobLSBLong(image); viff_info.columns=ReadBlobLSBLong(image); viff_info.subrows=ReadBlobLSBLong(image); viff_info.x_offset=(long) ReadBlobLSBLong(image); viff_info.y_offset=(long) ReadBlobLSBLong(image); viff_info.x_bits_per_pixel=(float) ReadBlobLSBLong(image); viff_info.y_bits_per_pixel=(float) ReadBlobLSBLong(image); viff_info.location_type=ReadBlobLSBLong(image); viff_info.location_dimension=ReadBlobLSBLong(image); viff_info.number_of_images=ReadBlobLSBLong(image); viff_info.number_data_bands=ReadBlobLSBLong(image); viff_info.data_storage_type=ReadBlobLSBLong(image); viff_info.data_encode_scheme=ReadBlobLSBLong(image); viff_info.map_scheme=ReadBlobLSBLong(image); viff_info.map_storage_type=ReadBlobLSBLong(image); viff_info.map_rows=ReadBlobLSBLong(image); viff_info.map_columns=ReadBlobLSBLong(image); viff_info.map_subrows=ReadBlobLSBLong(image); viff_info.map_enable=ReadBlobLSBLong(image); viff_info.maps_per_cycle=ReadBlobLSBLong(image); viff_info.color_space_model=ReadBlobLSBLong(image); } else { viff_info.rows=ReadBlobMSBLong(image); viff_info.columns=ReadBlobMSBLong(image); viff_info.subrows=ReadBlobMSBLong(image); viff_info.x_offset=(long) ReadBlobMSBLong(image); viff_info.y_offset=(long) ReadBlobMSBLong(image); viff_info.x_bits_per_pixel=(float) ReadBlobMSBLong(image); viff_info.y_bits_per_pixel=(float) ReadBlobMSBLong(image); viff_info.location_type=ReadBlobMSBLong(image); viff_info.location_dimension=ReadBlobMSBLong(image); viff_info.number_of_images=ReadBlobMSBLong(image); viff_info.number_data_bands=ReadBlobMSBLong(image); viff_info.data_storage_type=ReadBlobMSBLong(image); viff_info.data_encode_scheme=ReadBlobMSBLong(image); viff_info.map_scheme=ReadBlobMSBLong(image); viff_info.map_storage_type=ReadBlobMSBLong(image); viff_info.map_rows=ReadBlobMSBLong(image); viff_info.map_columns=ReadBlobMSBLong(image); viff_info.map_subrows=ReadBlobMSBLong(image); viff_info.map_enable=ReadBlobMSBLong(image); viff_info.maps_per_cycle=ReadBlobMSBLong(image); viff_info.color_space_model=ReadBlobMSBLong(image); } for (i=0; i < 420; i++) (void) ReadBlobByte(image); image->columns=viff_info.rows; image->rows=viff_info.columns; image->depth=viff_info.x_bits_per_pixel <= 8 ? 8UL : QuantumDepth; /* Verify that we can read this VIFF image. */ number_pixels=(MagickSizeType) viff_info.columns*viff_info.rows; if (number_pixels != (size_t) number_pixels) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); if (number_pixels == 0) ThrowReaderException(CoderError,"ImageColumnOrRowSizeIsNotSupported"); 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. */ image->colors=image->depth <= 8 ? 256UL : 65536UL; if (viff_info.data_storage_type == VFF_TYP_BIT) image->colors=2; if (AllocateImageColormap(image,image->colors) == 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 (AllocateImageColormap(image,image->colors) == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); 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 < (long) (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 < (long) image->colors) { image->colormap[i].red=ScaleCharToQuantum((unsigned char) value); image->colormap[i].green= ScaleCharToQuantum((unsigned char) value); image->colormap[i].blue=ScaleCharToQuantum((unsigned char) value); } else if (i < (long) (2*image->colors)) image->colormap[i % image->colors].green= ScaleCharToQuantum((unsigned char) value); else if (i < (long) (3*image->colors)) image->colormap[i % image->colors].blue= ScaleCharToQuantum((unsigned char) value); } viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap); break; } default: ThrowReaderException(CoderError,"ColormapTypeNotSupported"); } /* Initialize image structure. */ image->matte=viff_info.number_data_bands == 4 ? MagickTrue : MagickFalse; image->storage_class= (viff_info.number_data_bands < 3 ? PseudoClass : DirectClass); image->columns=viff_info.rows; image->rows=viff_info.columns; if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) if (image->scene >= (image_info->scene+image_info->number_scenes-1)) break; if (SetImageExtent(image,0,0) == MagickFalse) { InheritException(exception,&image->exception); return(DestroyImageList(image)); } /* 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) max_packets=((image->columns+7UL) >> 3UL)*image->rows; else max_packets=(unsigned long) (number_pixels*viff_info.number_data_bands); viff_pixels=(unsigned char *) AcquireQuantumMemory(max_packets, bytes_per_pixel*sizeof(*viff_pixels)); if (viff_pixels == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); count=ReadBlob(image,bytes_per_pixel*max_packets,viff_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(viff_pixels,bytes_per_pixel*max_packets); break; } case VFF_TYP_4_BYTE: case VFF_TYP_FLOAT: { MSBOrderLong(viff_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 *) viff_pixels)[0]; break; case VFF_TYP_4_BYTE: value=1.0*((int *) viff_pixels)[0]; break; case VFF_TYP_FLOAT: value=((float *) viff_pixels)[0]; break; case VFF_TYP_DOUBLE: value=((double *) viff_pixels)[0]; break; default: value=1.0*viff_pixels[0]; break; } max_value=value; min_value=value; for (i=0; i < (long) max_packets; i++) { switch ((int) viff_info.data_storage_type) { case VFF_TYP_2_BYTE: value=1.0*((short *) viff_pixels)[i]; break; case VFF_TYP_4_BYTE: value=1.0*((int *) viff_pixels)[i]; break; case VFF_TYP_FLOAT: value=((float *) viff_pixels)[i]; break; case VFF_TYP_DOUBLE: value=((double *) viff_pixels)[i]; break; default: value=1.0*viff_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=(MagickRealType) QuantumRange/min_value; min_value=0; } else scale_factor=(MagickRealType) QuantumRange/(max_value-min_value); } /* Convert pixels to Quantum size. */ p=(unsigned char *) viff_pixels; for (i=0; i < (long) max_packets; i++) { switch ((int) viff_info.data_storage_type) { case VFF_TYP_2_BYTE: value=1.0*((short *) viff_pixels)[i]; break; case VFF_TYP_4_BYTE: value=1.0*((int *) viff_pixels)[i]; break; case VFF_TYP_FLOAT: value=((float *) viff_pixels)[i]; break; case VFF_TYP_DOUBLE: value=((double *) viff_pixels)[i]; break; default: value=1.0*viff_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) value; p++; } /* Convert VIFF raster image to pixel packets. */ p=(unsigned char *) viff_pixels; if (viff_info.data_storage_type == VFF_TYP_BIT) { /* Convert bitmap scanline. */ (void) SetImageType(image,BilevelType); (void) SetImageType(image,PaletteType); for (y=0; y < (long) image->rows; y++) { q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) (image->columns-7); x+=8) { for (bit=0; bit < 8; bit++) if (PixelIntensity(q) < ((MagickRealType) QuantumRange/2.0)) { quantum=(unsigned long) indexes[x+bit]; quantum|=0x01; indexes[x+bit]=(IndexPacket) quantum; } p++; } if ((image->columns % 8) != 0) { for (bit=0; bit < (long) (image->columns % 8); bit++) if (PixelIntensity(q) < ((MagickRealType) QuantumRange/2.0)) { quantum=(unsigned long) indexes[x+bit]; quantum|=0x01; indexes[x+bit]=(IndexPacket) quantum; } p++; } if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } } else if (image->storage_class == PseudoClass) for (y=0; y < (long) image->rows; y++) { q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) image->columns; x++) indexes[x]=(IndexPacket) (*p++); if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } else { /* Convert DirectColor scanline. */ number_pixels=(MagickSizeType) image->columns*image->rows; for (y=0; y < (long) image->rows; y++) { q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; for (x=0; x < (long) image->columns; x++) { q->red=ScaleCharToQuantum(*p); q->green=ScaleCharToQuantum(*(p+number_pixels)); q->blue=ScaleCharToQuantum(*(p+2*number_pixels)); if (image->colors != 0) { q->red=image->colormap[(long) q->red].red; q->green=image->colormap[(long) q->green].green; q->blue=image->colormap[(long) q->blue].blue; } q->opacity=(Quantum) (image->matte ? QuantumRange- ScaleCharToQuantum(*(p+number_pixels*3)) : OpaqueOpacity); p++; q++; } if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } } viff_pixels=(unsigned char *) RelinquishMagickMemory(viff_pixels); if (image->storage_class == PseudoClass) (void) SyncImage(image); 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 != 0) && (viff_info.identifier == 0xab)) { /* Allocate next image structure. */ AllocateNextImage(image_info,image); if (GetNextImageInList(image) == (Image *) NULL) { image=DestroyImageList(image); return((Image *) NULL); } image=SyncNextImageInList(image); if (image->progress_monitor != (MagickProgressMonitor) NULL) { status=image->progress_monitor(LoadImagesTag,TellBlob(image), GetBlobSize(image),image->client_data); if (status == MagickFalse) break; } } } while ((count != 0) && (viff_info.identifier == 0xab)); CloseBlob(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: % % unsigned long RegisterVIFFImage(void) % */ ModuleExport unsigned long RegisterVIFFImage(void) { MagickInfo *entry; entry=SetMagickInfo("VIFF"); entry->decoder=(DecodeImageHandler *) ReadVIFFImage; entry->encoder=(EncodeImageHandler *) WriteVIFFImage; entry->magick=(IsImageFormatHandler *) IsVIFF; entry->description=ConstantString("Khoros Visualization image"); entry->module=ConstantString("VIFF"); (void) RegisterMagickInfo(entry); entry=SetMagickInfo("XV"); entry->decoder=(DecodeImageHandler *) ReadVIFFImage; entry->encoder=(EncodeImageHandler *) WriteVIFFImage; entry->description=ConstantString("Khoros Visualization image"); entry->module=ConstantString("VIFF"); (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) % % A description of each parameter follows. % % o image_info: The image info. % % o image: The image. % */ static inline size_t MagickMin(const size_t x,const size_t y) { if (x < y) return(x); return(y); } static MagickBooleanType WriteVIFFImage(const ImageInfo *image_info, Image *image) { #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]; unsigned long rows, columns, subrows; long x_offset, y_offset; unsigned int x_bits_per_pixel, y_bits_per_pixel; unsigned long 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; long y; MagickBooleanType status; MagickOffsetType scene; MagickSizeType number_pixels, packets; register const PixelPacket *p; register IndexPacket *indexes; register long x; register long i; register unsigned char *q; unsigned char buffer[8], *viff_pixels; ViffInfo viff_info; /* 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); (void) ResetMagickMemory(&viff_info,0,sizeof(ViffInfo)); scene=0; do { /* Initialize VIFF image structure. */ if (image_info->colorspace == UndefinedColorspace) (void) SetImageColorspace(image,RGBColorspace); if (IsGrayImage(image,&image->exception) != MagickFalse) (void) SetImageStorageClass(image,DirectClass); viff_info.identifier=(char) 0xab; 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"); 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->matte ? 4UL : 3UL; 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 (IsGrayImage(image,&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=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). */ buffer[0]=(unsigned char) viff_info.identifier; buffer[1]=(unsigned char) viff_info.file_type; buffer[2]=(unsigned char) viff_info.release; buffer[3]=(unsigned char) viff_info.version; buffer[4]=(unsigned char) viff_info.machine_dependency; buffer[5]=(unsigned char) viff_info.reserve[0]; buffer[6]=(unsigned char) viff_info.reserve[1]; buffer[7]=(unsigned char) viff_info.reserve[2]; (void) WriteBlob(image,8,buffer); (void) WriteBlob(image,512,(unsigned char *) viff_info.comment); (void) WriteBlobMSBLong(image,viff_info.rows); (void) WriteBlobMSBLong(image,viff_info.columns); (void) WriteBlobMSBLong(image,viff_info.subrows); (void) WriteBlobMSBLong(image,(unsigned long) viff_info.x_offset); (void) WriteBlobMSBLong(image,(unsigned long) viff_info.y_offset); viff_info.x_bits_per_pixel=1U*(63 << 24) | (128 << 16); (void) WriteBlobMSBLong(image,(unsigned long) viff_info.x_bits_per_pixel); viff_info.y_bits_per_pixel=1U*(63 << 24) | (128 << 16); (void) WriteBlobMSBLong(image,(unsigned long) viff_info.y_bits_per_pixel); (void) WriteBlobMSBLong(image,viff_info.location_type); (void) WriteBlobMSBLong(image,viff_info.location_dimension); (void) WriteBlobMSBLong(image,viff_info.number_of_images); (void) WriteBlobMSBLong(image,viff_info.number_data_bands); (void) WriteBlobMSBLong(image,viff_info.data_storage_type); (void) WriteBlobMSBLong(image,viff_info.data_encode_scheme); (void) WriteBlobMSBLong(image,viff_info.map_scheme); (void) WriteBlobMSBLong(image,viff_info.map_storage_type); (void) WriteBlobMSBLong(image,viff_info.map_rows); (void) WriteBlobMSBLong(image,viff_info.map_columns); (void) WriteBlobMSBLong(image,viff_info.map_subrows); (void) WriteBlobMSBLong(image,viff_info.map_enable); (void) WriteBlobMSBLong(image,viff_info.maps_per_cycle); (void) WriteBlobMSBLong(image,viff_info.color_space_model); for (i=0; i < 420; i++) (void) WriteBlobByte(image,'\0'); /* Convert MIFF to VIFF raster pixels. */ viff_pixels=(unsigned char *) AcquireQuantumMemory((size_t) packets, sizeof(*viff_pixels)); if (viff_pixels == (unsigned char *) NULL) ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); q=viff_pixels; if (image->storage_class == DirectClass) { /* Convert DirectClass packet to VIFF RGB pixel. */ number_pixels=(MagickSizeType) image->columns*image->rows; for (y=0; y < (long) image->rows; y++) { p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) image->columns; x++) { *q=ScaleQuantumToChar(p->red); *(q+number_pixels)=ScaleQuantumToChar(p->green); *(q+number_pixels*2)=ScaleQuantumToChar(p->blue); if (image->matte != MagickFalse) *(q+number_pixels*3)=ScaleQuantumToChar((Quantum) (QuantumRange-p->opacity)); p++; q++; } if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(SaveImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } } else if (IsGrayImage(image,&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 < (long) image->colors; i++) *q++=ScaleQuantumToChar(image->colormap[i].red); for (i=0; i < (long) image->colors; i++) *q++=ScaleQuantumToChar(image->colormap[i].green); for (i=0; i < (long) image->colors; i++) *q++=ScaleQuantumToChar(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=viff_pixels; for (y=0; y < (long) image->rows; y++) { p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) image->columns; x++) *q++=(unsigned char) indexes[x]; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(SaveImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } } else if (image->colors <= 2) { long x, y; register unsigned char bit, byte; /* Convert PseudoClass image to a VIFF monochrome image. */ (void) SetImageType(image,BilevelType); for (y=0; y < (long) image->rows; y++) { p=AcquireImagePixels(image,0,y,image->columns,1, &image->exception); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); bit=0; byte=0; for (x=0; x < (long) image->columns; x++) { byte>>=1; if (PixelIntensity(p) < ((MagickRealType) QuantumRange/2.0)) byte|=0x80; bit++; if (bit == 8) { *q++=byte; bit=0; byte=0; } } if (bit != 0) *q++=byte >> (8-bit); if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(SaveImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } } else { /* Convert PseudoClass packet to VIFF grayscale pixel. */ for (y=0; y < (long) image->rows; y++) { p=AcquireImagePixels(image,0,y,image->columns,1, &image->exception); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) image->columns; x++) { *q++=(unsigned char) PixelIntensityToQuantum(p); p++; } if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(SaveImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } } (void) WriteBlob(image,(size_t) packets,viff_pixels); viff_pixels=(unsigned char *) RelinquishMagickMemory(viff_pixels); if (GetNextImageInList(image) == (Image *) NULL) break; image=SyncNextImageInList(image); if (image->progress_monitor != (MagickProgressMonitor) NULL) { status=image->progress_monitor(SaveImagesTag,scene, GetImageListLength(image),image->client_data); if (status == MagickFalse) break; } scene++; } while (image_info->adjoin != MagickFalse); CloseBlob(image); return(MagickTrue); }