/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d F A X I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadFAXImage() reads a Group 3 FAX 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 ReadFAXImage method is:
%
% Image *ReadFAXImage(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 *ReadFAXImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image
*image;
MagickBooleanType
status;
/*
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,exception);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Initialize image structure.
*/
image->storage_class=PseudoClass;
if (image->columns == 0)
image->columns=2592;
if (image->rows == 0)
image->rows=3508;
image->depth=8;
if (AcquireImageColormap(image,2,exception) == MagickFalse)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
/*
Monochrome colormap.
*/
image->colormap[0].red=QuantumRange;
image->colormap[0].green=QuantumRange;
image->colormap[0].blue=QuantumRange;
image->colormap[1].red=(Quantum) 0;
image->colormap[1].green=(Quantum) 0;
image->colormap[1].blue=(Quantum) 0;
if (image_info->ping != MagickFalse)
{
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
status=HuffmanDecodeImage(image,exception);
if (status == MagickFalse)
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
if (EOFBlob(image) != MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:85，代码来源:fax.c
示例2: assert
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d F A X I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method ReadFAXImage reads a Group 3 FAX 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 ReadFAXImage method is:
%
% Image *ReadFAXImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadFAXImage returns a pointer to the image after
% reading. A null image is returned if there is a memory shortage or
% if the image cannot be read.
%
% o image_info: Specifies a pointer to a ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadFAXImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image
*image;
unsigned int
status;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == False)
ThrowReaderException(FileOpenError,UnableToOpenFile,image);
/*
Initialize image structure.
*/
image->storage_class=PseudoClass;
if (image->columns == 0)
image->columns=2592;
if (image->rows == 0)
image->rows=3508;
image->depth=8;
if (!AllocateImageColormap(image,2))
ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);
/*
Monochrome colormap.
*/
image->colormap[0].red=MaxRGB;
image->colormap[0].green=MaxRGB;
image->colormap[0].blue=MaxRGB;
image->colormap[1].red=0;
image->colormap[1].green=0;
image->colormap[1].blue=0;
if (image_info->ping)
{
CloseBlob(image);
return(image);
}
if (CheckImagePixelLimits(image, exception) != MagickPass)
ThrowReaderException(ResourceLimitError,ImagePixelLimitExceeded,image);
status=HuffmanDecodeImage(image);
if (status == False)
ThrowReaderException(CorruptImageError,UnableToReadImageData,image);
if (EOFBlob(image))
ThrowException(exception,CorruptImageError,UnexpectedEndOfFile,
image->filename);
CloseBlob(image);
return(image);
}
开发者ID:hank2015，项目名称:testCMS，代码行数:88，代码来源:fax.c
示例3: ReadFAXImage
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d F A X I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadFAXImage() reads a Group 3 FAX 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 ReadFAXImage method is:
%
% Image *ReadFAXImage(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* FaxReadG3(Image *image,ExceptionInfo *exception)
{
MagickBooleanType
status;
status=HuffmanDecodeImage(image,exception);
if (status == MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnableToReadImageData",
image->filename);
if (EOFBlob(image) != MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d A V S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadAVSImage() reads an AVS X 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 ReadAVSImage method is:
%
% Image *ReadAVSImage(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 *ReadAVSImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image
*image;
MagickBooleanType
status;
register PixelPacket
*q;
register ssize_t
x;
register unsigned char
*p;
size_t
height,
length,
width;
ssize_t
count,
y;
unsigned char
*pixels;
/*
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);
}
/*
Read AVS X image.
*/
width=ReadBlobMSBLong(image);
height=ReadBlobMSBLong(image);
if (EOFBlob(image) != MagickFalse)
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
if ((width == 0UL) || (height == 0UL))
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
do
{
/*
Convert AVS raster image to pixel packets.
*/
image->columns=width;
image->rows=height;
image->depth=8;
if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
4*sizeof(*pixels));
if (pixels == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
length=(size_t) 4*image->columns;
for (y=0; y < (ssize_t) image->rows; y++)
{
count=ReadBlob(image,length,pixels);
//.........这里部分代码省略.........
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d A R T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method ReadARTImage reads an ART X 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 ReadARTImage method is:
%
% Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadARTImage returns a pointer to the image after
% reading. A null image is returned if there is a memory shortage or if
% the image cannot be read.
%
% o image_info: Specifies a pointer to a ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image *image;
int i;
unsigned width,height,dummy;
long ldblk;
unsigned char *BImgBuff=NULL;
unsigned char Padding;
unsigned int status;
const PixelPacket *q;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == False)
ThrowReaderException(FileOpenError,UnableToOpenFile,image);
/*
Read ART image.
*/
dummy=ReadBlobLSBShort(image);
width=ReadBlobLSBShort(image);
dummy=ReadBlobLSBShort(image);
height=ReadBlobLSBShort(image);
ldblk=(long) ((width+7) / 8);
Padding=(unsigned char) ((-ldblk) & 0x01);
if(GetBlobSize(image)!=(8+((long)ldblk+Padding)*height))
ThrowReaderException(CorruptImageError,ImproperImageHeader,image);
image->columns=width;
image->rows=height;
image->depth=1;
image->colors=1l << image->depth;
/* printf("ART header checked OK %d,%d\n",image->colors,image->depth); */
if (!AllocateImageColormap(image,image->colors)) goto NoMemory;
/* If ping is true, then only set image size and colors without reading any image data. */
if (image_info->ping) goto DONE_READING;
/* ----- Load RLE compressed raster ----- */
BImgBuff=MagickAllocateMemory(unsigned char *,((size_t) ldblk)); /*Ldblk was set in the check phase*/
if(BImgBuff==NULL)
NoMemory:
ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);
for(i=0; i<(int)height; i++)
{
(void) ReadBlob(image,(size_t)ldblk,(char *)BImgBuff);
(void) ReadBlob(image,Padding,(char *)&dummy);
q=SetImagePixels(image,0,i,image->columns,1);
if (q == (PixelPacket *)NULL) break;
(void)ImportImagePixelArea(image,GrayQuantum,1,BImgBuff,NULL,0);
if (!SyncImagePixels(image)) break;
}
if(BImgBuff!=NULL)
MagickFreeMemory(BImgBuff);
if (EOFBlob(image))
ThrowException(exception,CorruptImageError,UnexpectedEndOfFile,
image->filename);
//.........这里部分代码省略.........
开发者ID:acobus，项目名称:PDF2TeX，代码行数:101，代码来源:art.c
示例11: ReadYUVImage
//.........这里部分代码省略.........
AppendImageFormat("V",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
}
for (y=0; y < (ssize_t) chroma_image->rows; y++)
{
(void) ReadBlob(image,(size_t) quantum*chroma_image->columns,scanline);
p=scanline;
q=GetAuthenticPixels(chroma_image,0,y,chroma_image->columns,1,
exception);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (ssize_t) chroma_image->columns; x++)
{
if (quantum == 1)
SetPixelBlue(q,ScaleCharToQuantum(*p++));
else
{
SetPixelBlue(q,ScaleShortToQuantum(((*p) << 8) | *(p+1)));
p+=2;
}
q++;
}
if (SyncAuthenticPixels(chroma_image,exception) == MagickFalse)
break;
}
}
/*
Scale image.
*/
resize_image=ResizeImage(chroma_image,image->columns,image->rows,
TriangleFilter,1.0,exception);
chroma_image=DestroyImage(chroma_image);
if (resize_image == (Image *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
for (y=0; y < (ssize_t) image->rows; y++)
{
q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
chroma_pixels=GetVirtualPixels(resize_image,0,y,resize_image->columns,1,
&resize_image->exception);
if ((q == (PixelPacket *) NULL) ||
(chroma_pixels == (const PixelPacket *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelGreen(q,GetPixelGreen(chroma_pixels));
SetPixelBlue(q,GetPixelBlue(chroma_pixels));
chroma_pixels++;
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
resize_image=DestroyImage(resize_image);
SetImageColorspace(image,YCbCrColorspace);
if (interlace == PartitionInterlace)
(void) CopyMagickString(image->filename,image_info->filename,
MaxTextExtent);
if (EOFBlob(image) != MagickFalse)
{
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
break;
}
/*
Proceed to next image.
*/
if (image_info->number_scenes != 0)
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
if (interlace == NoInterlace)
count=ReadBlob(image,(size_t) (2*quantum*image->columns),scanline);
else
count=ReadBlob(image,(size_t) quantum*image->columns,scanline);
if (count != 0)
{
/*
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 (count != 0);
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
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