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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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|
% Cristy %
|
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|
% July 1992 %
|
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|
% %
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|
% %
|
|
|
% Copyright 1999-2021 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 %
|
|
|
% 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, %
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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 %
|
|
|
% limitations under the License. %
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|
% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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|
%
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%
|
|
|
*/
|
|
|
|
|
|
/*
|
|
|
Include declarations.
|
|
|
*/
|
|
|
#include "MagickCore/studio.h"
|
|
|
#include "MagickCore/artifact.h"
|
|
|
#include "MagickCore/attribute.h"
|
|
|
#include "MagickCore/blob.h"
|
|
|
#include "MagickCore/blob-private.h"
|
|
|
#include "MagickCore/cache.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/option.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"
|
|
|
|
|
|
/*
|
|
|
Enumerated declaractions.
|
|
|
*/
|
|
|
typedef enum
|
|
|
{
|
|
|
TGAColormap = 1,
|
|
|
TGARGB = 2,
|
|
|
TGAMonochrome = 3,
|
|
|
TGARLEColormap = 9,
|
|
|
TGARLERGB = 10,
|
|
|
TGARLEMonochrome = 11
|
|
|
} TGAImageType;
|
|
|
|
|
|
/*
|
|
|
Typedef declaractions.
|
|
|
*/
|
|
|
typedef struct _TGAInfo
|
|
|
{
|
|
|
TGAImageType
|
|
|
image_type;
|
|
|
|
|
|
unsigned char
|
|
|
id_length,
|
|
|
colormap_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;
|
|
|
} TGAInfo;
|
|
|
|
|
|
/*
|
|
|
Forward declarations.
|
|
|
*/
|
|
|
static MagickBooleanType
|
|
|
WriteTGAImage(const ImageInfo *,Image *,ExceptionInfo *);
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% R e a d T G A I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% ReadTGAImage() reads a Truevision TGA 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 ReadTGAImage method is:
|
|
|
%
|
|
|
% Image *ReadTGAImage(const ImageInfo *image_info,ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows:
|
|
|
%
|
|
|
% o image_info: the image info.
|
|
|
%
|
|
|
% o exception: return any errors or warnings in this structure.
|
|
|
%
|
|
|
*/
|
|
|
static Image *ReadTGAImage(const ImageInfo *image_info,ExceptionInfo *exception)
|
|
|
{
|
|
|
Image
|
|
|
*image;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
PixelInfo
|
|
|
pixel;
|
|
|
|
|
|
Quantum
|
|
|
index;
|
|
|
|
|
|
Quantum
|
|
|
*q;
|
|
|
|
|
|
ssize_t
|
|
|
i,
|
|
|
x;
|
|
|
|
|
|
size_t
|
|
|
base,
|
|
|
flag,
|
|
|
skip;
|
|
|
|
|
|
ssize_t
|
|
|
count,
|
|
|
offset,
|
|
|
y;
|
|
|
|
|
|
TGAInfo
|
|
|
tga_info;
|
|
|
|
|
|
unsigned char
|
|
|
j,
|
|
|
k,
|
|
|
pixels[4],
|
|
|
runlength;
|
|
|
|
|
|
unsigned int
|
|
|
alpha_bits;
|
|
|
|
|
|
/*
|
|
|
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 TGA header information.
|
|
|
*/
|
|
|
count=ReadBlob(image,1,&tga_info.id_length);
|
|
|
tga_info.colormap_type=(unsigned char) ReadBlobByte(image);
|
|
|
tga_info.image_type=(TGAImageType) ReadBlobByte(image);
|
|
|
if ((count != 1) ||
|
|
|
((tga_info.image_type != TGAColormap) &&
|
|
|
(tga_info.image_type != TGARGB) &&
|
|
|
(tga_info.image_type != TGAMonochrome) &&
|
|
|
(tga_info.image_type != TGARLEColormap) &&
|
|
|
(tga_info.image_type != TGARLERGB) &&
|
|
|
(tga_info.image_type != TGARLEMonochrome)) ||
|
|
|
(((tga_info.image_type == TGAColormap) ||
|
|
|
(tga_info.image_type == TGARLEColormap)) &&
|
|
|
(tga_info.colormap_type == 0)))
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
tga_info.colormap_index=ReadBlobLSBShort(image);
|
|
|
tga_info.colormap_length=ReadBlobLSBShort(image);
|
|
|
tga_info.colormap_size=(unsigned char) ReadBlobByte(image);
|
|
|
tga_info.x_origin=ReadBlobLSBShort(image);
|
|
|
tga_info.y_origin=ReadBlobLSBShort(image);
|
|
|
tga_info.width=(unsigned short) ReadBlobLSBShort(image);
|
|
|
tga_info.height=(unsigned short) ReadBlobLSBShort(image);
|
|
|
tga_info.bits_per_pixel=(unsigned char) ReadBlobByte(image);
|
|
|
tga_info.attributes=(unsigned char) ReadBlobByte(image);
|
|
|
if (EOFBlob(image) != MagickFalse)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
if ((((tga_info.bits_per_pixel <= 1) || (tga_info.bits_per_pixel >= 17)) &&
|
|
|
(tga_info.bits_per_pixel != 24) && (tga_info.bits_per_pixel != 32)))
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
/*
|
|
|
Initialize image structure.
|
|
|
*/
|
|
|
image->columns=tga_info.width;
|
|
|
image->rows=tga_info.height;
|
|
|
if ((tga_info.image_type != TGAMonochrome) &&
|
|
|
(tga_info.image_type != TGARLEMonochrome))
|
|
|
{
|
|
|
alpha_bits=(tga_info.attributes & 0x0FU);
|
|
|
image->alpha_trait=(alpha_bits > 0) || (tga_info.bits_per_pixel == 32) ||
|
|
|
(tga_info.colormap_size == 32) ? BlendPixelTrait : UndefinedPixelTrait;
|
|
|
}
|
|
|
if ((tga_info.image_type != TGAColormap) &&
|
|
|
(tga_info.image_type != TGARLEColormap))
|
|
|
image->depth=(size_t) ((tga_info.bits_per_pixel <= 8) ? 8 :
|
|
|
(tga_info.bits_per_pixel <= 16) ? 5 : 8);
|
|
|
else
|
|
|
image->depth=(size_t) ((tga_info.colormap_size <= 8) ? 8 :
|
|
|
(tga_info.colormap_size <= 16) ? 5 : 8);
|
|
|
if ((tga_info.image_type == TGAColormap) ||
|
|
|
(tga_info.image_type == TGARLEColormap))
|
|
|
image->storage_class=PseudoClass;
|
|
|
if ((tga_info.image_type == TGAMonochrome) ||
|
|
|
(tga_info.image_type == TGARLEMonochrome))
|
|
|
{
|
|
|
image->type=GrayscaleType;
|
|
|
image->colorspace=GRAYColorspace;
|
|
|
}
|
|
|
image->compression=NoCompression;
|
|
|
if ((tga_info.image_type == TGARLEColormap) ||
|
|
|
(tga_info.image_type == TGARLEMonochrome) ||
|
|
|
(tga_info.image_type == TGARLERGB))
|
|
|
image->compression=RLECompression;
|
|
|
if (image->storage_class == PseudoClass)
|
|
|
{
|
|
|
if (tga_info.colormap_type != 0)
|
|
|
image->colors=tga_info.colormap_index+tga_info.colormap_length;
|
|
|
else
|
|
|
{
|
|
|
size_t
|
|
|
one;
|
|
|
|
|
|
one=1;
|
|
|
image->colors=one << tga_info.bits_per_pixel;
|
|
|
if ((MagickSizeType) image->colors > GetBlobSize(image))
|
|
|
ThrowReaderException(CorruptImageError,
|
|
|
"InsufficientImageDataInFile");
|
|
|
if (AcquireImageColormap(image,image->colors,exception) == MagickFalse)
|
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
}
|
|
|
}
|
|
|
if (tga_info.id_length != 0)
|
|
|
{
|
|
|
char
|
|
|
*comment;
|
|
|
|
|
|
size_t
|
|
|
length;
|
|
|
|
|
|
/*
|
|
|
TGA image comment.
|
|
|
*/
|
|
|
length=(size_t) tga_info.id_length;
|
|
|
comment=(char *) NULL;
|
|
|
if (~length >= (MagickPathExtent-1))
|
|
|
comment=(char *) AcquireQuantumMemory(length+MagickPathExtent,
|
|
|
sizeof(*comment));
|
|
|
if (comment == (char *) NULL)
|
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
count=ReadBlob(image,length,(unsigned char *) comment);
|
|
|
if (count == (ssize_t) length)
|
|
|
{
|
|
|
comment[length]='\0';
|
|
|
(void) SetImageProperty(image,"comment",comment,exception);
|
|
|
}
|
|
|
comment=DestroyString(comment);
|
|
|
}
|
|
|
image->orientation=BottomLeftOrientation;
|
|
|
if ((tga_info.attributes & (1UL << 4)) == 0)
|
|
|
{
|
|
|
if ((tga_info.attributes & (1UL << 5)) == 0)
|
|
|
image->orientation=BottomLeftOrientation;
|
|
|
else
|
|
|
image->orientation=TopLeftOrientation;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
if ((tga_info.attributes & (1UL << 5)) == 0)
|
|
|
image->orientation=BottomRightOrientation;
|
|
|
else
|
|
|
image->orientation=TopRightOrientation;
|
|
|
}
|
|
|
if (image_info->ping != MagickFalse)
|
|
|
{
|
|
|
(void) CloseBlob(image);
|
|
|
return(image);
|
|
|
}
|
|
|
status=SetImageExtent(image,image->columns,image->rows,exception);
|
|
|
if (status == MagickFalse)
|
|
|
return(DestroyImageList(image));
|
|
|
(void) memset(&pixel,0,sizeof(pixel));
|
|
|
pixel.alpha=(MagickRealType) OpaqueAlpha;
|
|
|
if (tga_info.colormap_type != 0)
|
|
|
{
|
|
|
/*
|
|
|
Read TGA raster colormap.
|
|
|
*/
|
|
|
if (image->colors < tga_info.colormap_index)
|
|
|
image->colors=tga_info.colormap_index;
|
|
|
if (AcquireImageColormap(image,image->colors,exception) == MagickFalse)
|
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
for (i=0; i < (ssize_t) tga_info.colormap_index; i++)
|
|
|
image->colormap[i]=pixel;
|
|
|
for ( ; i < (ssize_t) image->colors; i++)
|
|
|
{
|
|
|
switch (tga_info.colormap_size)
|
|
|
{
|
|
|
case 8:
|
|
|
default:
|
|
|
{
|
|
|
/*
|
|
|
Gray scale.
|
|
|
*/
|
|
|
pixel.red=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
pixel.green=pixel.red;
|
|
|
pixel.blue=pixel.red;
|
|
|
break;
|
|
|
}
|
|
|
case 15:
|
|
|
case 16:
|
|
|
{
|
|
|
QuantumAny
|
|
|
range;
|
|
|
|
|
|
/*
|
|
|
5 bits each of red green and blue.
|
|
|
*/
|
|
|
j=(unsigned char) ReadBlobByte(image);
|
|
|
k=(unsigned char) ReadBlobByte(image);
|
|
|
range=GetQuantumRange(5UL);
|
|
|
pixel.red=(MagickRealType) ScaleAnyToQuantum(1UL*(k & 0x7c) >> 2,
|
|
|
range);
|
|
|
pixel.green=(MagickRealType) ScaleAnyToQuantum((1UL*(k & 0x03)
|
|
|
<< 3)+(1UL*(j & 0xe0) >> 5),range);
|
|
|
pixel.blue=(MagickRealType) ScaleAnyToQuantum(1UL*(j & 0x1f),range);
|
|
|
break;
|
|
|
}
|
|
|
case 24:
|
|
|
{
|
|
|
/*
|
|
|
8 bits each of blue, green and red.
|
|
|
*/
|
|
|
pixel.blue=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
pixel.green=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
pixel.red=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
break;
|
|
|
}
|
|
|
case 32:
|
|
|
{
|
|
|
/*
|
|
|
8 bits each of blue, green, red, and alpha.
|
|
|
*/
|
|
|
pixel.blue=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
pixel.green=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
pixel.red=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
pixel.alpha=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
ReadBlobByte(image));
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
image->colormap[i]=pixel;
|
|
|
}
|
|
|
}
|
|
|
/*
|
|
|
Convert TGA pixels to pixel packets.
|
|
|
*/
|
|
|
base=0;
|
|
|
flag=0;
|
|
|
skip=MagickFalse;
|
|
|
index=0;
|
|
|
runlength=0;
|
|
|
offset=0;
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
q=QueueAuthenticPixels(image,0,offset,image->columns,1,exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
break;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
if ((tga_info.image_type == TGARLEColormap) ||
|
|
|
(tga_info.image_type == TGARLERGB) ||
|
|
|
(tga_info.image_type == TGARLEMonochrome))
|
|
|
{
|
|
|
if (runlength != 0)
|
|
|
{
|
|
|
runlength--;
|
|
|
skip=flag != 0;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
count=ReadBlob(image,1,&runlength);
|
|
|
if (count != 1)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
flag=runlength & 0x80;
|
|
|
if (flag != 0)
|
|
|
runlength-=128;
|
|
|
skip=MagickFalse;
|
|
|
}
|
|
|
}
|
|
|
if (skip == MagickFalse)
|
|
|
switch (tga_info.bits_per_pixel)
|
|
|
{
|
|
|
case 8:
|
|
|
default:
|
|
|
{
|
|
|
/*
|
|
|
Gray scale.
|
|
|
*/
|
|
|
if (ReadBlob(image,1,pixels) != 1)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
index=(Quantum) pixels[0];
|
|
|
if (tga_info.colormap_type != 0)
|
|
|
pixel=image->colormap[(ssize_t) ConstrainColormapIndex(image,
|
|
|
(ssize_t) index,exception)];
|
|
|
else
|
|
|
{
|
|
|
pixel.red=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
index);
|
|
|
pixel.green=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
index);
|
|
|
pixel.blue=(MagickRealType) ScaleCharToQuantum((unsigned char)
|
|
|
index);
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
case 15:
|
|
|
case 16:
|
|
|
{
|
|
|
QuantumAny
|
|
|
range;
|
|
|
|
|
|
/*
|
|
|
5 bits each of RGB.
|
|
|
*/
|
|
|
if (ReadBlob(image,2,pixels) != 2)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
j=pixels[0];
|
|
|
k=pixels[1];
|
|
|
range=GetQuantumRange(5UL);
|
|
|
pixel.red=(MagickRealType) ScaleAnyToQuantum(1UL*(k & 0x7c) >> 2,
|
|
|
range);
|
|
|
pixel.green=(MagickRealType) ScaleAnyToQuantum((1UL*
|
|
|
(k & 0x03) << 3)+(1UL*(j & 0xe0) >> 5),range);
|
|
|
pixel.blue=(MagickRealType) ScaleAnyToQuantum(1UL*(j & 0x1f),range);
|
|
|
if (image->alpha_trait != UndefinedPixelTrait)
|
|
|
pixel.alpha=(MagickRealType) ((k & 0x80) == 0 ? (Quantum)
|
|
|
TransparentAlpha : (Quantum) OpaqueAlpha);
|
|
|
if (image->storage_class == PseudoClass)
|
|
|
index=(Quantum) ConstrainColormapIndex(image,((ssize_t) (k << 8))+
|
|
|
j,exception);
|
|
|
break;
|
|
|
}
|
|
|
case 24:
|
|
|
{
|
|
|
/*
|
|
|
BGR pixels.
|
|
|
*/
|
|
|
if (ReadBlob(image,3,pixels) != 3)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
pixel.blue=(MagickRealType) ScaleCharToQuantum(pixels[0]);
|
|
|
pixel.green=(MagickRealType) ScaleCharToQuantum(pixels[1]);
|
|
|
pixel.red=(MagickRealType) ScaleCharToQuantum(pixels[2]);
|
|
|
break;
|
|
|
}
|
|
|
case 32:
|
|
|
{
|
|
|
/*
|
|
|
BGRA pixels.
|
|
|
*/
|
|
|
if (ReadBlob(image,4,pixels) != 4)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
pixel.blue=(MagickRealType) ScaleCharToQuantum(pixels[0]);
|
|
|
pixel.green=(MagickRealType) ScaleCharToQuantum(pixels[1]);
|
|
|
pixel.red=(MagickRealType) ScaleCharToQuantum(pixels[2]);
|
|
|
pixel.alpha=(MagickRealType) ScaleCharToQuantum(pixels[3]);
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
if (status == MagickFalse)
|
|
|
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
|
|
if (image->storage_class == PseudoClass)
|
|
|
SetPixelIndex(image,index,q);
|
|
|
SetPixelRed(image,ClampToQuantum(pixel.red),q);
|
|
|
SetPixelGreen(image,ClampToQuantum(pixel.green),q);
|
|
|
SetPixelBlue(image,ClampToQuantum(pixel.blue),q);
|
|
|
if (image->alpha_trait != UndefinedPixelTrait)
|
|
|
SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
if (((unsigned char) (tga_info.attributes & 0xc0) >> 6) == 2)
|
|
|
offset+=2;
|
|
|
else
|
|
|
offset++;
|
|
|
if (offset >= (ssize_t) image->rows)
|
|
|
{
|
|
|
base++;
|
|
|
offset=base;
|
|
|
}
|
|
|
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
|
|
break;
|
|
|
if (image->previous == (Image *) NULL)
|
|
|
{
|
|
|
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=AcquireMagickInfo("TGA","ICB","Truevision Targa image");
|
|
|
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
|
|
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
|
|
entry->flags|=CoderDecoderSeekableStreamFlag;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
(void) RegisterMagickInfo(entry);
|
|
|
entry=AcquireMagickInfo("TGA","TGA","Truevision Targa image");
|
|
|
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
|
|
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
|
|
entry->flags|=CoderDecoderSeekableStreamFlag;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
(void) RegisterMagickInfo(entry);
|
|
|
entry=AcquireMagickInfo("TGA","VDA","Truevision Targa image");
|
|
|
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
|
|
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
|
|
entry->flags|=CoderDecoderSeekableStreamFlag;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
(void) RegisterMagickInfo(entry);
|
|
|
entry=AcquireMagickInfo("TGA","VST","Truevision Targa image");
|
|
|
entry->decoder=(DecodeImageHandler *) ReadTGAImage;
|
|
|
entry->encoder=(EncodeImageHandler *) WriteTGAImage;
|
|
|
entry->flags|=CoderDecoderSeekableStreamFlag;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
(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,ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows.
|
|
|
%
|
|
|
% o image_info: the image info.
|
|
|
%
|
|
|
% o image: The image.
|
|
|
%
|
|
|
*/
|
|
|
static inline void WriteTGAPixel(Image *image,TGAImageType image_type,
|
|
|
const Quantum *p,const QuantumAny range,const double midpoint)
|
|
|
{
|
|
|
if (image_type == TGAColormap || image_type == TGARLEColormap)
|
|
|
(void) WriteBlobByte(image,(unsigned char) ((ssize_t) GetPixelIndex(image,p)));
|
|
|
else
|
|
|
{
|
|
|
if (image_type == TGAMonochrome || image_type == TGARLEMonochrome)
|
|
|
(void) WriteBlobByte(image,ScaleQuantumToChar(ClampToQuantum(
|
|
|
GetPixelLuma(image,p))));
|
|
|
else
|
|
|
if (image->depth == 5)
|
|
|
{
|
|
|
unsigned char
|
|
|
green,
|
|
|
value;
|
|
|
|
|
|
green=(unsigned char) ScaleQuantumToAny(GetPixelGreen(image,p),
|
|
|
range);
|
|
|
value=((unsigned char) ScaleQuantumToAny(GetPixelBlue(image,p),
|
|
|
range)) | ((green & 0x07) << 5);
|
|
|
(void) WriteBlobByte(image,value);
|
|
|
value=(((image->alpha_trait != UndefinedPixelTrait) &&
|
|
|
((double) GetPixelAlpha(image,p) > midpoint)) ? 0x80 : 0) |
|
|
|
((unsigned char) ScaleQuantumToAny(GetPixelRed(image,p),range) <<
|
|
|
2) | ((green & 0x18) >> 3);
|
|
|
(void) WriteBlobByte(image,value);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
(void) WriteBlobByte(image,ScaleQuantumToChar(
|
|
|
GetPixelBlue(image,p)));
|
|
|
(void) WriteBlobByte(image,ScaleQuantumToChar(
|
|
|
GetPixelGreen(image,p)));
|
|
|
(void) WriteBlobByte(image,ScaleQuantumToChar(
|
|
|
GetPixelRed(image,p)));
|
|
|
if (image->alpha_trait != UndefinedPixelTrait)
|
|
|
(void) WriteBlobByte(image,ScaleQuantumToChar(
|
|
|
GetPixelAlpha(image,p)));
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
static MagickBooleanType WriteTGAImage(const ImageInfo *image_info,Image *image,
|
|
|
ExceptionInfo *exception)
|
|
|
{
|
|
|
CompressionType
|
|
|
compression;
|
|
|
|
|
|
const char
|
|
|
*comment;
|
|
|
|
|
|
const double
|
|
|
midpoint = QuantumRange/2.0;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
QuantumAny
|
|
|
range;
|
|
|
|
|
|
const Quantum
|
|
|
*p;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
unsigned char
|
|
|
*q;
|
|
|
|
|
|
size_t
|
|
|
channels;
|
|
|
|
|
|
ssize_t
|
|
|
base,
|
|
|
count,
|
|
|
offset,
|
|
|
y;
|
|
|
|
|
|
TGAInfo
|
|
|
tga_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);
|
|
|
/*
|
|
|
Initialize TGA raster file header.
|
|
|
*/
|
|
|
if ((image->columns > 65535L) || (image->rows > 65535L))
|
|
|
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
|
|
|
(void) TransformImageColorspace(image,sRGBColorspace,exception);
|
|
|
compression=image->compression;
|
|
|
if (image_info->compression != UndefinedCompression)
|
|
|
compression=image_info->compression;
|
|
|
range=GetQuantumRange(5UL);
|
|
|
tga_info.id_length=0;
|
|
|
comment=GetImageProperty(image,"comment",exception);
|
|
|
if (comment != (const char *) NULL)
|
|
|
tga_info.id_length=(unsigned char) MagickMin(strlen(comment),255);
|
|
|
tga_info.colormap_type=0;
|
|
|
tga_info.colormap_index=0;
|
|
|
tga_info.colormap_length=0;
|
|
|
tga_info.colormap_size=0;
|
|
|
tga_info.x_origin=0;
|
|
|
tga_info.y_origin=0;
|
|
|
tga_info.width=(unsigned short) image->columns;
|
|
|
tga_info.height=(unsigned short) image->rows;
|
|
|
tga_info.bits_per_pixel=8;
|
|
|
tga_info.attributes=0;
|
|
|
if ((image_info->type != TrueColorType) &&
|
|
|
(image_info->type != TrueColorAlphaType) &&
|
|
|
(image_info->type != PaletteType) &&
|
|
|
(image->alpha_trait == UndefinedPixelTrait) &&
|
|
|
(SetImageGray(image,exception) != MagickFalse))
|
|
|
tga_info.image_type=compression == RLECompression ? TGARLEMonochrome :
|
|
|
TGAMonochrome;
|
|
|
else
|
|
|
if ((image->storage_class == DirectClass) || (image->colors > 256))
|
|
|
{
|
|
|
/*
|
|
|
Full color TGA raster.
|
|
|
*/
|
|
|
tga_info.image_type=compression == RLECompression ? TGARLERGB : TGARGB;
|
|
|
if (image_info->depth == 5)
|
|
|
{
|
|
|
tga_info.bits_per_pixel=16;
|
|
|
if (image->alpha_trait != UndefinedPixelTrait)
|
|
|
tga_info.attributes=1; /* # of alpha bits */
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
tga_info.bits_per_pixel=24;
|
|
|
if (image->alpha_trait != UndefinedPixelTrait)
|
|
|
{
|
|
|
tga_info.bits_per_pixel=32;
|
|
|
tga_info.attributes=8; /* # of alpha bits */
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
Colormapped TGA raster.
|
|
|
*/
|
|
|
tga_info.image_type=compression == RLECompression ? TGARLEColormap :
|
|
|
TGAColormap;
|
|
|
tga_info.colormap_type=1;
|
|
|
tga_info.colormap_length=(unsigned short) image->colors;
|
|
|
if (image_info->depth == 5)
|
|
|
tga_info.colormap_size=16;
|
|
|
else
|
|
|
tga_info.colormap_size=24;
|
|
|
}
|
|
|
if ((image->orientation == BottomRightOrientation) ||
|
|
|
(image->orientation == TopRightOrientation))
|
|
|
tga_info.attributes|=(1UL << 4);
|
|
|
if ((image->orientation == TopLeftOrientation) ||
|
|
|
(image->orientation == UndefinedOrientation) ||
|
|
|
(image->orientation == TopRightOrientation))
|
|
|
tga_info.attributes|=(1UL << 5);
|
|
|
if ((image->columns > 65535) || (image->rows > 65535))
|
|
|
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
|
|
|
/*
|
|
|
Write TGA header.
|
|
|
*/
|
|
|
(void) WriteBlobByte(image,tga_info.id_length);
|
|
|
(void) WriteBlobByte(image,tga_info.colormap_type);
|
|
|
(void) WriteBlobByte(image,(unsigned char) tga_info.image_type);
|
|
|
(void) WriteBlobLSBShort(image,tga_info.colormap_index);
|
|
|
(void) WriteBlobLSBShort(image,tga_info.colormap_length);
|
|
|
(void) WriteBlobByte(image,tga_info.colormap_size);
|
|
|
(void) WriteBlobLSBShort(image,tga_info.x_origin);
|
|
|
(void) WriteBlobLSBShort(image,tga_info.y_origin);
|
|
|
(void) WriteBlobLSBShort(image,tga_info.width);
|
|
|
(void) WriteBlobLSBShort(image,tga_info.height);
|
|
|
(void) WriteBlobByte(image,tga_info.bits_per_pixel);
|
|
|
(void) WriteBlobByte(image,tga_info.attributes);
|
|
|
if (tga_info.id_length != 0)
|
|
|
(void) WriteBlob(image,tga_info.id_length,(unsigned char *) comment);
|
|
|
if (tga_info.colormap_type != 0)
|
|
|
{
|
|
|
unsigned char
|
|
|
green,
|
|
|
*targa_colormap;
|
|
|
|
|
|
/*
|
|
|
Dump colormap to file (blue, green, red byte order).
|
|
|
*/
|
|
|
targa_colormap=(unsigned char *) AcquireQuantumMemory((size_t)
|
|
|
tga_info.colormap_length,(tga_info.colormap_size/8)*
|
|
|
sizeof(*targa_colormap));
|
|
|
if (targa_colormap == (unsigned char *) NULL)
|
|
|
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
q=targa_colormap;
|
|
|
for (i=0; i < (ssize_t) image->colors; i++)
|
|
|
{
|
|
|
if (image_info->depth == 5)
|
|
|
{
|
|
|
green=(unsigned char) ScaleQuantumToAny(ClampToQuantum(
|
|
|
image->colormap[i].green),range);
|
|
|
*q++=((unsigned char) ScaleQuantumToAny(ClampToQuantum(
|
|
|
image->colormap[i].blue),range)) | ((green & 0x07) << 5);
|
|
|
*q++=(((image->alpha_trait != UndefinedPixelTrait) && ((double)
|
|
|
ClampToQuantum(image->colormap[i].alpha) > midpoint)) ? 0x80 : 0) |
|
|
|
((unsigned char) ScaleQuantumToAny(ClampToQuantum(
|
|
|
image->colormap[i].red),range) << 2) | ((green & 0x18) >> 3);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
*q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].blue));
|
|
|
*q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].green));
|
|
|
*q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].red));
|
|
|
}
|
|
|
}
|
|
|
(void) WriteBlob(image,(size_t) ((tga_info.colormap_size/8)*
|
|
|
tga_info.colormap_length),targa_colormap);
|
|
|
targa_colormap=(unsigned char *) RelinquishMagickMemory(targa_colormap);
|
|
|
}
|
|
|
/*
|
|
|
Convert MIFF to TGA raster pixels.
|
|
|
*/
|
|
|
base=0;
|
|
|
offset=0;
|
|
|
channels=GetPixelChannels(image);
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
p=GetVirtualPixels(image,0,offset,image->columns,1,exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
break;
|
|
|
if (compression == RLECompression)
|
|
|
{
|
|
|
x=0;
|
|
|
count=0;
|
|
|
while (x < (ssize_t) image->columns)
|
|
|
{
|
|
|
i=1;
|
|
|
while ((i < 128) && (count + i < 128) &&
|
|
|
((x + i) < (ssize_t) image->columns))
|
|
|
{
|
|
|
if (tga_info.image_type == TGARLEColormap)
|
|
|
{
|
|
|
if (GetPixelIndex(image,p+(i*channels)) !=
|
|
|
GetPixelIndex(image,p+((i-1)*channels)))
|
|
|
break;
|
|
|
}
|
|
|
else
|
|
|
if (tga_info.image_type == TGARLEMonochrome)
|
|
|
{
|
|
|
if (GetPixelLuma(image,p+(i*channels)) !=
|
|
|
GetPixelLuma(image,p+((i-1)*channels)))
|
|
|
break;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
if ((GetPixelBlue(image,p+(i*channels)) !=
|
|
|
GetPixelBlue(image,p+((i-1)*channels))) ||
|
|
|
(GetPixelGreen(image,p+(i*channels)) !=
|
|
|
GetPixelGreen(image,p+((i-1)*channels))) ||
|
|
|
(GetPixelRed(image,p+(i*channels)) !=
|
|
|
GetPixelRed(image,p+((i-1)*channels))))
|
|
|
break;
|
|
|
if ((image->alpha_trait != UndefinedPixelTrait) &&
|
|
|
(GetPixelAlpha(image,p+(i*channels)) !=
|
|
|
GetPixelAlpha(image,p+(i-1)*channels)))
|
|
|
break;
|
|
|
}
|
|
|
i++;
|
|
|
}
|
|
|
if (i < 3)
|
|
|
{
|
|
|
count+=i;
|
|
|
p+=(i*channels);
|
|
|
}
|
|
|
if ((i >= 3) || (count == 128) ||
|
|
|
((x + i) == (ssize_t) image->columns))
|
|
|
{
|
|
|
if (count > 0)
|
|
|
{
|
|
|
(void) WriteBlobByte(image,(unsigned char) (--count));
|
|
|
while (count >= 0)
|
|
|
{
|
|
|
WriteTGAPixel(image,tga_info.image_type,p-((count+1)*
|
|
|
channels),range,midpoint);
|
|
|
count--;
|
|
|
}
|
|
|
count=0;
|
|
|
}
|
|
|
}
|
|
|
if (i >= 3)
|
|
|
{
|
|
|
(void) WriteBlobByte(image,(unsigned char) ((i-1) | 0x80));
|
|
|
WriteTGAPixel(image,tga_info.image_type,p,range,midpoint);
|
|
|
p+=(i*channels);
|
|
|
}
|
|
|
x+=i;
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
WriteTGAPixel(image,tga_info.image_type,p,range,midpoint);
|
|
|
p+=channels;
|
|
|
}
|
|
|
if (((unsigned char) (tga_info.attributes & 0xc0) >> 6) == 2)
|
|
|
offset+=2;
|
|
|
else
|
|
|
offset++;
|
|
|
if (offset >= (ssize_t) image->rows)
|
|
|
{
|
|
|
base++;
|
|
|
offset=base;
|
|
|
}
|
|
|
if (image->previous == (Image *) NULL)
|
|
|
{
|
|
|
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
|
|
image->rows);
|
|
|
if (status == MagickFalse)
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
(void) CloseBlob(image);
|
|
|
return(MagickTrue);
|
|
|
}
|
