/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- ReadTIMImage
- RegisterTIMImage
- UnregisterTIMImage
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% TTTTT IIIII M M %
% T I MM MM %
% T I M M M %
% T I M M %
% T IIIII M M %
% %
% %
% Read PSX TIM Image Format %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2013 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/cache.h"
#include "magick/colormap.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/monitor-private.h"
#include "magick/pixel-accessor.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d T I M I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadTIMImage() reads a PSX TIM image file and returns it. It
% allocates the memory necessary for the new Image structure and returns a
% pointer to the new image.
%
% Contributed by os@scee.sony.co.uk.
%
% The format of the ReadTIMImage method is:
%
% Image *ReadTIMImage(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 *ReadTIMImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
typedef struct _TIMInfo
{
size_t
id,
flag;
} TIMInfo;
TIMInfo
tim_info;
Image
*image;
int
bits_per_pixel,
has_clut;
MagickBooleanType
status;
register IndexPacket
*indexes;
register ssize_t
x;
register PixelPacket
*q;
register ssize_t
i;
register unsigned char
*p;
size_t
bytes_per_line,
height,
image_size,
pixel_mode,
width;
ssize_t
count,
y;
unsigned char
*tim_data,
*tim_pixels;
unsigned short
word;
/*
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=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Determine if this a TIM file.
*/
tim_info.id=ReadBlobLSBLong(image);
do
{
/*
Verify TIM identifier.
*/
if (tim_info.id != 0x00000010)
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
tim_info.flag=ReadBlobLSBLong(image);
has_clut=tim_info.flag & (1 << 3) ? 1 : 0;
pixel_mode=tim_info.flag & 0x07;
switch ((int) pixel_mode)
{
case 0: bits_per_pixel=4; break;
case 1: bits_per_pixel=8; break;
case 2: bits_per_pixel=16; break;
case 3: bits_per_pixel=24; break;
default: bits_per_pixel=4; break;
}
if (has_clut)
{
unsigned char
*tim_colormap;
/*
Read TIM raster colormap.
*/
(void)ReadBlobLSBLong(image);
(void)ReadBlobLSBShort(image);
(void)ReadBlobLSBShort(image);
width=ReadBlobLSBShort(image);
height=ReadBlobLSBShort(image);
image->columns=width;
image->rows=height;
if (AcquireImageColormap(image,pixel_mode == 1 ? 256UL : 16UL) == MagickFalse)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
tim_colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
2UL*sizeof(*tim_colormap));
if (tim_colormap == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
count=ReadBlob(image,2*image->colors,tim_colormap);
if (count != (ssize_t) (2*image->colors))
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
p=tim_colormap;
for (i=0; i < (ssize_t) image->colors; i++)
{
word=(*p++);
word|=(unsigned short) (*p++ << 8);
image->colormap[i].blue=ScaleCharToQuantum(
ScaleColor5to8(1UL*(word >> 10) & 0x1f));
image->colormap[i].green=ScaleCharToQuantum(
ScaleColor5to8(1UL*(word >> 5) & 0x1f));
image->colormap[i].red=ScaleCharToQuantum(
ScaleColor5to8(1UL*word & 0x1f));
}
tim_colormap=(unsigned char *) RelinquishMagickMemory(tim_colormap);
}
if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
/*
Read image data.
*/
(void) ReadBlobLSBLong(image);
(void) ReadBlobLSBShort(image);
(void) ReadBlobLSBShort(image);
width=ReadBlobLSBShort(image);
height=ReadBlobLSBShort(image);
image_size=2*width*height;
bytes_per_line=width*2;
width=(width*16)/bits_per_pixel;
tim_data=(unsigned char *) AcquireQuantumMemory(image_size,
sizeof(*tim_data));
if (tim_data == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
count=ReadBlob(image,image_size,tim_data);
if (count != (ssize_t) (image_size))
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
tim_pixels=tim_data;
/*
Initialize image structure.
*/
image->columns=width;
image->rows=height;
/*
Convert TIM raster image to pixel packets.
*/
switch (bits_per_pixel)
{
case 4:
{
/*
Convert PseudoColor scanline.
*/
for (y=(ssize_t) image->rows-1; y >= 0; y--)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(image);
p=tim_pixels+y*bytes_per_line;
for (x=0; x < ((ssize_t) image->columns-1); x+=2)
{
SetPixelIndex(indexes+x,(*p) & 0x0f);
SetPixelIndex(indexes+x+1,(*p >> 4) & 0x0f);
p++;
}
if ((image->columns % 2) != 0)
{
SetPixelIndex(indexes+x,(*p >> 4) & 0x0f);
p++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
break;
}
case 8:
{
/*
Convert PseudoColor scanline.
*/
for (y=(ssize_t) image->rows-1; y >= 0; y--)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(image);
p=tim_pixels+y*bytes_per_line;
for (x=0; x < (ssize_t) image->columns; x++)
SetPixelIndex(indexes+x,*p++);
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
break;
}
case 16:
{
/*
Convert DirectColor scanline.
*/
for (y=(ssize_t) image->rows-1; y >= 0; y--)
{
p=tim_pixels+y*bytes_per_line;
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
word=(*p++);
word|=(*p++ << 8);
SetPixelBlue(q,ScaleCharToQuantum(ScaleColor5to8(
(1UL*word >> 10) & 0x1f)));
SetPixelGreen(q,ScaleCharToQuantum(ScaleColor5to8(
(1UL*word >> 5) & 0x1f)));
SetPixelRed(q,ScaleCharToQuantum(ScaleColor5to8(
(1UL*word >> 0) & 0x1f)));
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
break;
}
case 24:
{
/*
Convert DirectColor scanline.
*/
for (y=(ssize_t) image->rows-1; y >= 0; y--)
{
p=tim_pixels+y*bytes_per_line;
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelRed(q,ScaleCharToQuantum(*p++));
SetPixelGreen(q,ScaleCharToQuantum(*p++));
SetPixelBlue(q,ScaleCharToQuantum(*p++));
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
break;
}
default:
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
}
if (image->storage_class == PseudoClass)
(void) SyncImage(image);
tim_pixels=(unsigned char *) RelinquishMagickMemory(tim_pixels);
if (EOFBlob(image) != MagickFalse)
{
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
break;
}
/*
Proceed to next image.
*/
tim_info.id=ReadBlobLSBLong(image);
if (tim_info.id == 0x00000010)
{
/*
Allocate next image structure.
*/
AcquireNextImage(image_info,image);
if (GetNextImageInList(image) == (Image *) NULL)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
image=SyncNextImageInList(image);
status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
GetBlobSize(image));
if (status == MagickFalse)
break;
}
} while (tim_info.id == 0x00000010);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r T I M I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterTIMImage() adds attributes for the TIM image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterTIMImage method is:
%
% size_t RegisterTIMImage(void)
%
*/
ModuleExport size_t RegisterTIMImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("TIM");
entry->decoder=(DecodeImageHandler *) ReadTIMImage;
entry->description=ConstantString("PSX TIM");
entry->module=ConstantString("TIM");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r T I M I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterTIMImage() removes format registrations made by the
% TIM module from the list of supported formats.
%
% The format of the UnregisterTIMImage method is:
%
% UnregisterTIMImage(void)
%
*/
ModuleExport void UnregisterTIMImage(void)
{
(void) UnregisterMagickInfo("TIM");
}