This source file includes following definitions.
- ReadOTBImage
- RegisterOTBImage
- UnregisterOTBImage
- WriteOTBImage
#include "magick/studio.h"
#include "magick/attribute.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/color-private.h"
#include "magick/colormap.h"
#include "magick/colorspace.h"
#include "magick/colorspace-private.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"
static MagickBooleanType
WriteOTBImage(const ImageInfo *,Image *);
static Image *ReadOTBImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define GetBit(a,i) (((a) >> (i)) & 1L)
Image
*image;
int
byte;
MagickBooleanType
status;
register IndexPacket
*indexes;
register ssize_t
x;
register PixelPacket
*q;
ssize_t
y;
unsigned char
bit,
info,
depth;
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);
}
info=(unsigned char) ReadBlobByte(image);
if (GetBit(info,4) == 0)
{
image->columns=(size_t) ReadBlobByte(image);
image->rows=(size_t) ReadBlobByte(image);
}
else
{
image->columns=(size_t) ReadBlobMSBShort(image);
image->rows=(size_t) ReadBlobMSBShort(image);
}
if ((image->columns == 0) || (image->rows == 0))
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
depth=(unsigned char) ReadBlobByte(image);
if (depth != 1)
ThrowReaderException(CoderError,"OnlyLevelZerofilesSupported");
if (AcquireImageColormap(image,2) == MagickFalse)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
if (image_info->ping != MagickFalse)
{
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
status=SetImageExtent(image,image->columns,image->rows);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
for (y=0; y < (ssize_t) image->rows; y++)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(image);
bit=0;
byte=0;
for (x=0; x < (ssize_t) image->columns; x++)
{
if (bit == 0)
{
byte=ReadBlobByte(image);
if (byte == EOF)
ThrowReaderException(CorruptImageError,"CorruptImage");
}
SetPixelIndex(indexes+x,(byte & (0x01 << (7-bit))) ?
0x00 : 0x01);
bit++;
if (bit == 8)
bit=0;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
(void) SyncImage(image);
if (EOFBlob(image) != MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
ModuleExport size_t RegisterOTBImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("OTB");
entry->decoder=(DecodeImageHandler *) ReadOTBImage;
entry->encoder=(EncodeImageHandler *) WriteOTBImage;
entry->adjoin=MagickFalse;
entry->description=ConstantString("On-the-air bitmap");
entry->module=ConstantString("OTB");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
ModuleExport void UnregisterOTBImage(void)
{
(void) UnregisterMagickInfo("OTB");
}
static MagickBooleanType WriteOTBImage(const ImageInfo *image_info,Image *image)
{
#define SetBit(a,i,set) \
a=(unsigned char) ((set) ? (a) | (1L << (i)) : (a) & ~(1L << (i)))
MagickBooleanType
status;
register const PixelPacket
*p;
register ssize_t
x;
ssize_t
y;
unsigned char
bit,
byte,
info;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
(void) TransformImageColorspace(image,sRGBColorspace);
(void) SetImageType(image,BilevelType);
info=0;
if ((image->columns >= 256) || (image->rows >= 256))
SetBit(info,4,1);
(void) WriteBlobByte(image,info);
if ((image->columns >= 256) || (image->rows >= 256))
{
(void) WriteBlobMSBShort(image,(unsigned short) image->columns);
(void) WriteBlobMSBShort(image,(unsigned short) image->rows);
}
else
{
(void) WriteBlobByte(image,(unsigned char) image->columns);
(void) WriteBlobByte(image,(unsigned char) image->rows);
}
(void) WriteBlobByte(image,1);
for (y=0; y < (ssize_t) image->rows; y++)
{
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
bit=0;
byte=0;
for (x=0; x < (ssize_t) image->columns; x++)
{
if (GetPixelLuma(image,p) < (QuantumRange/2.0))
byte|=0x1 << (7-bit);
bit++;
if (bit == 8)
{
(void) WriteBlobByte(image,byte);
bit=0;
byte=0;
}
p++;
}
if (bit != 0)
(void) WriteBlobByte(image,byte);
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
(void) CloseBlob(image);
return(MagickTrue);
}