- Modifications to compile ImageMagick
This commit is contained in:
Santi Noreña
parent
615ec83706
commit
83522c16c3
3442 changed files with 57 additions and 412926 deletions
838
ImageMagick/coders/tga.c
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838
ImageMagick/coders/tga.c
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% TTTTT GGGG AAA %
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% T G A A %
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% T G GG AAAAA %
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% T G G A A %
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% T GGG A A %
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% %
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% %
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% Read/Write Truevision Targa Image Format %
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% %
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% Software Design %
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% John Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% http://www.imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/cache.h"
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#include "magick/color-private.h"
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#include "magick/colormap.h"
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#include "magick/colormap-private.h"
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#include "magick/colorspace.h"
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#include "magick/colorspace-private.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/image.h"
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#include "magick/image-private.h"
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#include "magick/list.h"
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#include "magick/magick.h"
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#include "magick/memory_.h"
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#include "magick/monitor.h"
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#include "magick/monitor-private.h"
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#include "magick/pixel-accessor.h"
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#include "magick/property.h"
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#include "magick/quantum-private.h"
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#include "magick/static.h"
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#include "magick/string_.h"
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#include "magick/module.h"
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WriteTGAImage(const ImageInfo *,Image *);
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d T G A I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ReadTGAImage() reads a Truevision TGA image file and returns it.
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% It allocates the memory necessary for the new Image structure and returns
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% a pointer to the new image.
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%
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% The format of the ReadTGAImage method is:
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%
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% Image *ReadTGAImage(const ImageInfo *image_info,ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static Image *ReadTGAImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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#define TGAColormap 1
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#define TGARGB 2
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#define TGAMonochrome 3
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#define TGARLEColormap 9
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#define TGARLERGB 10
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#define TGARLEMonochrome 11
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typedef struct _TGAInfo
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{
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unsigned char
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id_length,
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colormap_type,
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image_type;
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unsigned short
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colormap_index,
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colormap_length;
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unsigned char
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colormap_size;
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unsigned short
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x_origin,
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y_origin,
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width,
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height;
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unsigned char
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bits_per_pixel,
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attributes;
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} TGAInfo;
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Image
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*image;
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IndexPacket
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index;
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MagickBooleanType
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status;
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PixelPacket
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pixel;
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register IndexPacket
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*indexes;
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register PixelPacket
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*q;
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register ssize_t
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i,
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x;
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size_t
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base,
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flag,
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offset,
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real,
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skip;
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ssize_t
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count,
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y;
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TGAInfo
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tga_info;
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unsigned char
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j,
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k,
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pixels[4],
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runlength;
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unsigned int
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alpha_bits;
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/*
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Open image file.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickSignature);
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if (image_info->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickSignature);
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image=AcquireImage(image_info);
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status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
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if (status == MagickFalse)
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{
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image=DestroyImageList(image);
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return((Image *) NULL);
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}
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/*
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Read TGA header information.
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*/
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count=ReadBlob(image,1,&tga_info.id_length);
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tga_info.colormap_type=(unsigned char) ReadBlobByte(image);
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tga_info.image_type=(unsigned char) ReadBlobByte(image);
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if ((count != 1) ||
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((tga_info.image_type != TGAColormap) &&
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(tga_info.image_type != TGARGB) &&
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(tga_info.image_type != TGAMonochrome) &&
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(tga_info.image_type != TGARLEColormap) &&
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(tga_info.image_type != TGARLERGB) &&
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(tga_info.image_type != TGARLEMonochrome)) ||
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(((tga_info.image_type == TGAColormap) ||
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(tga_info.image_type == TGARLEColormap)) &&
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(tga_info.colormap_type == 0)))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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tga_info.colormap_index=ReadBlobLSBShort(image);
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tga_info.colormap_length=ReadBlobLSBShort(image);
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tga_info.colormap_size=(unsigned char) ReadBlobByte(image);
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tga_info.x_origin=ReadBlobLSBShort(image);
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tga_info.y_origin=ReadBlobLSBShort(image);
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tga_info.width=(unsigned short) ReadBlobLSBShort(image);
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tga_info.height=(unsigned short) ReadBlobLSBShort(image);
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tga_info.bits_per_pixel=(unsigned char) ReadBlobByte(image);
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tga_info.attributes=(unsigned char) ReadBlobByte(image);
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if (EOFBlob(image) != MagickFalse)
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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if ((((tga_info.bits_per_pixel <= 1) || (tga_info.bits_per_pixel >= 17)) &&
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(tga_info.bits_per_pixel != 24) && (tga_info.bits_per_pixel != 32)))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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/*
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Initialize image structure.
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*/
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image->columns=tga_info.width;
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image->rows=tga_info.height;
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alpha_bits=(tga_info.attributes & 0x0FU);
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image->matte=(alpha_bits > 0) || (tga_info.bits_per_pixel == 32) ?
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MagickTrue : MagickFalse;
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if ((tga_info.image_type != TGAColormap) &&
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(tga_info.image_type != TGARLEColormap))
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image->depth=(size_t) ((tga_info.bits_per_pixel <= 8) ? 8 :
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(tga_info.bits_per_pixel <= 16) ? 5 :
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(tga_info.bits_per_pixel == 24) ? 8 :
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(tga_info.bits_per_pixel == 32) ? 8 : 8);
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else
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image->depth=(size_t) ((tga_info.colormap_size <= 8) ? 8 :
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(tga_info.colormap_size <= 16) ? 5 :
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(tga_info.colormap_size == 24) ? 8 :
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(tga_info.colormap_size == 32) ? 8 : 8);
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if ((tga_info.image_type == TGAColormap) ||
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(tga_info.image_type == TGAMonochrome) ||
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(tga_info.image_type == TGARLEColormap) ||
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(tga_info.image_type == TGARLEMonochrome))
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image->storage_class=PseudoClass;
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image->compression=NoCompression;
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if ((tga_info.image_type == TGARLEColormap) ||
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(tga_info.image_type == TGARLEMonochrome))
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image->compression=RLECompression;
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if (image->storage_class == PseudoClass)
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{
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if (tga_info.colormap_type != 0)
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image->colors=tga_info.colormap_length;
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else
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{
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size_t
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one;
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one=1;
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image->colors=one << tga_info.bits_per_pixel;
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if (AcquireImageColormap(image,image->colors) == MagickFalse)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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}
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}
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if (tga_info.id_length != 0)
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{
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char
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*comment;
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size_t
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length;
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/*
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TGA image comment.
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*/
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length=(size_t) tga_info.id_length;
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comment=(char *) NULL;
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if (~length >= (MaxTextExtent-1))
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comment=(char *) AcquireQuantumMemory(length+MaxTextExtent,
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sizeof(*comment));
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if (comment == (char *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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count=ReadBlob(image,tga_info.id_length,(unsigned char *) comment);
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comment[tga_info.id_length]='\0';
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(void) SetImageProperty(image,"comment",comment);
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comment=DestroyString(comment);
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}
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(void) ResetMagickMemory(&pixel,0,sizeof(pixel));
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pixel.opacity=(Quantum) OpaqueOpacity;
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if (tga_info.colormap_type != 0)
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{
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/*
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Read TGA raster colormap.
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*/
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if (AcquireImageColormap(image,image->colors) == MagickFalse)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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for (i=0; i < (ssize_t) image->colors; i++)
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{
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switch (tga_info.colormap_size)
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{
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case 8:
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default:
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{
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/*
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Gray scale.
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*/
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pixel.red=ScaleCharToQuantum((unsigned char) ReadBlobByte(image));
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pixel.green=pixel.red;
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pixel.blue=pixel.red;
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break;
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}
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case 15:
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case 16:
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{
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QuantumAny
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range;
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/*
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5 bits each of red green and blue.
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*/
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j=(unsigned char) ReadBlobByte(image);
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k=(unsigned char) ReadBlobByte(image);
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range=GetQuantumRange(5UL);
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pixel.red=ScaleAnyToQuantum(1UL*(k & 0x7c) >> 2,range);
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pixel.green=ScaleAnyToQuantum((1UL*(k & 0x03) << 3)+
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(1UL*(j & 0xe0) >> 5),range);
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pixel.blue=ScaleAnyToQuantum(1UL*(j & 0x1f),range);
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break;
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}
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case 24:
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case 32:
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{
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/*
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8 bits each of blue, green and red.
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*/
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pixel.blue=ScaleCharToQuantum((unsigned char) ReadBlobByte(image));
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pixel.green=ScaleCharToQuantum((unsigned char) ReadBlobByte(image));
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pixel.red=ScaleCharToQuantum((unsigned char) ReadBlobByte(image));
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break;
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}
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}
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image->colormap[i]=pixel;
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}
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}
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/*
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Convert TGA pixels to pixel packets.
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*/
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base=0;
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flag=0;
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skip=MagickFalse;
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real=0;
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index=(IndexPacket) 0;
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runlength=0;
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offset=0;
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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real=offset;
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if (((unsigned char) (tga_info.attributes & 0x20) >> 5) == 0)
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real=image->rows-real-1;
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q=QueueAuthenticPixels(image,0,(ssize_t) real,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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indexes=GetAuthenticIndexQueue(image);
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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if ((tga_info.image_type == TGARLEColormap) ||
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(tga_info.image_type == TGARLERGB) ||
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(tga_info.image_type == TGARLEMonochrome))
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{
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if (runlength != 0)
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{
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runlength--;
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skip=flag != 0;
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}
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else
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{
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count=ReadBlob(image,1,&runlength);
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if (count == 0)
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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flag=runlength & 0x80;
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if (flag != 0)
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runlength-=128;
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skip=MagickFalse;
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}
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}
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if (skip == MagickFalse)
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switch (tga_info.bits_per_pixel)
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{
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case 8:
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default:
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{
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/*
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Gray scale.
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*/
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index=(IndexPacket) ReadBlobByte(image);
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if (tga_info.colormap_type != 0)
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pixel=image->colormap[(ssize_t) ConstrainColormapIndex(image,
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1UL*index)];
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else
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{
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pixel.red=ScaleCharToQuantum((unsigned char) index);
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pixel.green=ScaleCharToQuantum((unsigned char) index);
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pixel.blue=ScaleCharToQuantum((unsigned char) index);
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}
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break;
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}
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case 15:
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case 16:
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{
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QuantumAny
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range;
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/*
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5 bits each of RGB;
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*/
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if (ReadBlob(image,2,pixels) != 2)
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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j=pixels[0];
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k=pixels[1];
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range=GetQuantumRange(5UL);
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pixel.red=ScaleAnyToQuantum(1UL*(k & 0x7c) >> 2,range);
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pixel.green=ScaleAnyToQuantum((1UL*(k & 0x03) << 3)+
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(1UL*(j & 0xe0) >> 5),range);
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pixel.blue=ScaleAnyToQuantum(1UL*(j & 0x1f),range);
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if (image->matte != MagickFalse)
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pixel.opacity=(k & 0x80) == 0 ? (Quantum) OpaqueOpacity :
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(Quantum) TransparentOpacity;
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if (image->storage_class == PseudoClass)
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index=ConstrainColormapIndex(image,((size_t) k << 8)+j);
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break;
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}
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case 24:
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{
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/*
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BGR pixels.
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*/
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if (ReadBlob(image,3,pixels) != 3)
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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pixel.blue=ScaleCharToQuantum(pixels[0]);
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pixel.green=ScaleCharToQuantum(pixels[1]);
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pixel.red=ScaleCharToQuantum(pixels[2]);
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break;
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}
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case 32:
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{
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/*
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BGRA pixels.
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*/
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if (ReadBlob(image,4,pixels) != 4)
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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pixel.blue=ScaleCharToQuantum(pixels[0]);
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pixel.green=ScaleCharToQuantum(pixels[1]);
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pixel.red=ScaleCharToQuantum(pixels[2]);
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pixel.opacity=(Quantum) (QuantumRange-ScaleCharToQuantum(
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pixels[3]));
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break;
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}
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}
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if (status == MagickFalse)
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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if (image->storage_class == PseudoClass)
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SetPixelIndex(indexes+x,index);
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SetPixelRed(q,pixel.red);
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SetPixelGreen(q,pixel.green);
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SetPixelBlue(q,pixel.blue);
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if (image->matte != MagickFalse)
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SetPixelOpacity(q,pixel.opacity);
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q++;
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}
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if (((unsigned char) (tga_info.attributes & 0xc0) >> 6) == 4)
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offset+=4;
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else
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if (((unsigned char) (tga_info.attributes & 0xc0) >> 6) == 2)
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offset+=2;
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else
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offset++;
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if (offset >= image->rows)
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{
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base++;
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offset=base;
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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if (image->previous == (Image *) NULL)
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{
|
||||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||||
image->rows);
|
||||
if (status == MagickFalse)
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (EOFBlob(image) != MagickFalse)
|
||||
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
|
||||
image->filename);
|
||||
(void) CloseBlob(image);
|
||||
return(GetFirstImageInList(image));
|
||||
}
|
||||
|
||||
/*
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% %
|
||||
% %
|
||||
% %
|
||||
% R e g i s t e r T G A I m a g e %
|
||||
% %
|
||||
% %
|
||||
% %
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
%
|
||||
% RegisterTGAImage() adds properties for the TGA 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 RegisterTGAImage method is:
|
||||
%
|
||||
% size_t RegisterTGAImage(void)
|
||||
%
|
||||
*/
|
||||
ModuleExport size_t RegisterTGAImage(void)
|
||||
{
|
||||
MagickInfo
|
||||
*entry;
|
||||
|
||||
entry=SetMagickInfo("ICB");
|
||||
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
||||
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
||||
entry->adjoin=MagickFalse;
|
||||
entry->description=ConstantString("Truevision Targa image");
|
||||
entry->module=ConstantString("TGA");
|
||||
(void) RegisterMagickInfo(entry);
|
||||
entry=SetMagickInfo("TGA");
|
||||
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
||||
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
||||
entry->adjoin=MagickFalse;
|
||||
entry->description=ConstantString("Truevision Targa image");
|
||||
entry->module=ConstantString("TGA");
|
||||
(void) RegisterMagickInfo(entry);
|
||||
entry=SetMagickInfo("VDA");
|
||||
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
||||
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
||||
entry->adjoin=MagickFalse;
|
||||
entry->description=ConstantString("Truevision Targa image");
|
||||
entry->module=ConstantString("TGA");
|
||||
(void) RegisterMagickInfo(entry);
|
||||
entry=SetMagickInfo("VST");
|
||||
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
||||
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
||||
entry->adjoin=MagickFalse;
|
||||
entry->description=ConstantString("Truevision Targa image");
|
||||
entry->module=ConstantString("TGA");
|
||||
(void) RegisterMagickInfo(entry);
|
||||
return(MagickImageCoderSignature);
|
||||
}
|
||||
|
||||
/*
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% %
|
||||
% %
|
||||
% %
|
||||
% U n r e g i s t e r T G A I m a g e %
|
||||
% %
|
||||
% %
|
||||
% %
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
%
|
||||
% UnregisterTGAImage() removes format registrations made by the
|
||||
% TGA module from the list of supported formats.
|
||||
%
|
||||
% The format of the UnregisterTGAImage method is:
|
||||
%
|
||||
% UnregisterTGAImage(void)
|
||||
%
|
||||
*/
|
||||
ModuleExport void UnregisterTGAImage(void)
|
||||
{
|
||||
(void) UnregisterMagickInfo("ICB");
|
||||
(void) UnregisterMagickInfo("TGA");
|
||||
(void) UnregisterMagickInfo("VDA");
|
||||
(void) UnregisterMagickInfo("VST");
|
||||
}
|
||||
|
||||
/*
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% %
|
||||
% %
|
||||
% %
|
||||
% W r i t e T G A I m a g e %
|
||||
% %
|
||||
% %
|
||||
% %
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
%
|
||||
% WriteTGAImage() writes a image in the Truevision Targa rasterfile
|
||||
% format.
|
||||
%
|
||||
% The format of the WriteTGAImage method is:
|
||||
%
|
||||
% MagickBooleanType WriteTGAImage(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 WriteTGAImage(const ImageInfo *image_info,Image *image)
|
||||
{
|
||||
#define TargaColormap 1
|
||||
#define TargaRGB 2
|
||||
#define TargaMonochrome 3
|
||||
#define TargaRLEColormap 9
|
||||
#define TargaRLERGB 10
|
||||
#define TargaRLEMonochrome 11
|
||||
|
||||
typedef struct _TargaInfo
|
||||
{
|
||||
unsigned char
|
||||
id_length,
|
||||
colormap_type,
|
||||
image_type;
|
||||
|
||||
unsigned short
|
||||
colormap_index,
|
||||
colormap_length;
|
||||
|
||||
unsigned char
|
||||
colormap_size;
|
||||
|
||||
unsigned short
|
||||
x_origin,
|
||||
y_origin,
|
||||
width,
|
||||
height;
|
||||
|
||||
unsigned char
|
||||
bits_per_pixel,
|
||||
attributes;
|
||||
} TargaInfo;
|
||||
|
||||
const char
|
||||
*value;
|
||||
|
||||
MagickBooleanType
|
||||
status;
|
||||
|
||||
register const IndexPacket
|
||||
*indexes;
|
||||
|
||||
register const PixelPacket
|
||||
*p;
|
||||
|
||||
register ssize_t
|
||||
x;
|
||||
|
||||
register ssize_t
|
||||
i;
|
||||
|
||||
register unsigned char
|
||||
*q;
|
||||
|
||||
ssize_t
|
||||
count,
|
||||
y;
|
||||
|
||||
TargaInfo
|
||||
targa_info;
|
||||
|
||||
unsigned char
|
||||
*targa_pixels;
|
||||
|
||||
/*
|
||||
Open output image file.
|
||||
*/
|
||||
assert(image_info != (const ImageInfo *) NULL);
|
||||
assert(image_info->signature == MagickSignature);
|
||||
assert(image != (Image *) NULL);
|
||||
assert(image->signature == MagickSignature);
|
||||
if (image->debug != MagickFalse)
|
||||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||||
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
|
||||
if (status == MagickFalse)
|
||||
return(status);
|
||||
/*
|
||||
Initialize TGA raster file header.
|
||||
*/
|
||||
if ((image->columns > 65535L) || (image->rows > 65535L))
|
||||
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
|
||||
if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
|
||||
(void) TransformImageColorspace(image,sRGBColorspace);
|
||||
targa_info.id_length=0;
|
||||
value=GetImageProperty(image,"comment");
|
||||
if (value != (const char *) NULL)
|
||||
targa_info.id_length=(unsigned char) MagickMin(strlen(value),255);
|
||||
targa_info.colormap_type=0;
|
||||
targa_info.colormap_index=0;
|
||||
targa_info.colormap_length=0;
|
||||
targa_info.colormap_size=0;
|
||||
targa_info.x_origin=0;
|
||||
targa_info.y_origin=0;
|
||||
targa_info.width=(unsigned short) image->columns;
|
||||
targa_info.height=(unsigned short) image->rows;
|
||||
targa_info.bits_per_pixel=8;
|
||||
targa_info.attributes=0;
|
||||
if ((image_info->type != TrueColorType) &&
|
||||
(image_info->type != TrueColorMatteType) &&
|
||||
(image_info->type != PaletteType) &&
|
||||
(image->matte == MagickFalse) &&
|
||||
(IsGrayImage(image,&image->exception) != MagickFalse))
|
||||
targa_info.image_type=TargaMonochrome;
|
||||
else
|
||||
if ((image->storage_class == DirectClass) || (image->colors > 256))
|
||||
{
|
||||
/*
|
||||
Full color TGA raster.
|
||||
*/
|
||||
targa_info.image_type=TargaRGB;
|
||||
targa_info.bits_per_pixel=24;
|
||||
if (image->matte != MagickFalse)
|
||||
{
|
||||
targa_info.bits_per_pixel=32;
|
||||
targa_info.attributes=8; /* # of alpha bits */
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/*
|
||||
Colormapped TGA raster.
|
||||
*/
|
||||
targa_info.image_type=TargaColormap;
|
||||
targa_info.colormap_type=1;
|
||||
targa_info.colormap_length=(unsigned short) image->colors;
|
||||
targa_info.colormap_size=24;
|
||||
}
|
||||
/*
|
||||
Write TGA header.
|
||||
*/
|
||||
(void) WriteBlobByte(image,targa_info.id_length);
|
||||
(void) WriteBlobByte(image,targa_info.colormap_type);
|
||||
(void) WriteBlobByte(image,targa_info.image_type);
|
||||
(void) WriteBlobLSBShort(image,targa_info.colormap_index);
|
||||
(void) WriteBlobLSBShort(image,targa_info.colormap_length);
|
||||
(void) WriteBlobByte(image,targa_info.colormap_size);
|
||||
(void) WriteBlobLSBShort(image,targa_info.x_origin);
|
||||
(void) WriteBlobLSBShort(image,targa_info.y_origin);
|
||||
(void) WriteBlobLSBShort(image,targa_info.width);
|
||||
(void) WriteBlobLSBShort(image,targa_info.height);
|
||||
(void) WriteBlobByte(image,targa_info.bits_per_pixel);
|
||||
(void) WriteBlobByte(image,targa_info.attributes);
|
||||
if (targa_info.id_length != 0)
|
||||
(void) WriteBlob(image,targa_info.id_length,(unsigned char *)
|
||||
value);
|
||||
if (targa_info.image_type == TargaColormap)
|
||||
{
|
||||
unsigned char
|
||||
*targa_colormap;
|
||||
|
||||
/*
|
||||
Dump colormap to file (blue, green, red byte order).
|
||||
*/
|
||||
targa_colormap=(unsigned char *) AcquireQuantumMemory((size_t)
|
||||
targa_info.colormap_length,3UL*sizeof(*targa_colormap));
|
||||
if (targa_colormap == (unsigned char *) NULL)
|
||||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||||
q=targa_colormap;
|
||||
for (i=0; i < (ssize_t) image->colors; i++)
|
||||
{
|
||||
*q++=ScaleQuantumToChar(image->colormap[i].blue);
|
||||
*q++=ScaleQuantumToChar(image->colormap[i].green);
|
||||
*q++=ScaleQuantumToChar(image->colormap[i].red);
|
||||
}
|
||||
(void) WriteBlob(image,(size_t) (3*targa_info.colormap_length),
|
||||
targa_colormap);
|
||||
targa_colormap=(unsigned char *) RelinquishMagickMemory(targa_colormap);
|
||||
}
|
||||
/*
|
||||
Convert MIFF to TGA raster pixels.
|
||||
*/
|
||||
count=(ssize_t) (targa_info.bits_per_pixel*targa_info.width)/8;
|
||||
targa_pixels=(unsigned char *) AcquireQuantumMemory((size_t) count,
|
||||
sizeof(*targa_pixels));
|
||||
if (targa_pixels == (unsigned char *) NULL)
|
||||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||||
for (y=(ssize_t) (image->rows-1); y >= 0; y--)
|
||||
{
|
||||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||||
if (p == (const PixelPacket *) NULL)
|
||||
break;
|
||||
q=targa_pixels;
|
||||
indexes=GetVirtualIndexQueue(image);
|
||||
for (x=0; x < (ssize_t) image->columns; x++)
|
||||
{
|
||||
if (targa_info.image_type == TargaColormap)
|
||||
*q++=(unsigned char) GetPixelIndex(indexes+x);
|
||||
else
|
||||
if (targa_info.image_type == TargaMonochrome)
|
||||
*q++=(unsigned char) ScaleQuantumToChar(PixelIntensityToQuantum(image,p));
|
||||
else
|
||||
{
|
||||
*q++=ScaleQuantumToChar(GetPixelBlue(p));
|
||||
*q++=ScaleQuantumToChar(GetPixelGreen(p));
|
||||
*q++=ScaleQuantumToChar(GetPixelRed(p));
|
||||
if (image->matte != MagickFalse)
|
||||
*q++=(unsigned char) ScaleQuantumToChar(
|
||||
GetPixelAlpha(p));
|
||||
if (image->colorspace == CMYKColorspace)
|
||||
*q++=ScaleQuantumToChar(GetPixelIndex(indexes+x));
|
||||
}
|
||||
p++;
|
||||
}
|
||||
(void) WriteBlob(image,(size_t) (q-targa_pixels),targa_pixels);
|
||||
if (image->previous == (Image *) NULL)
|
||||
{
|
||||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||||
image->rows);
|
||||
if (status == MagickFalse)
|
||||
break;
|
||||
}
|
||||
}
|
||||
targa_pixels=(unsigned char *) RelinquishMagickMemory(targa_pixels);
|
||||
(void) CloseBlob(image);
|
||||
return(MagickTrue);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue