|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% M M OOO N N OOO % |
|
|
% MM MM O O NN N O O % |
|
|
% M M M O O N N N O O % |
|
|
% M M O O N NN O O % |
|
|
% M M OOO N N OOO % |
|
|
% % |
|
|
% % |
|
|
% Read/Write Raw Bi-Level Bitmap Format % |
|
|
% % |
|
|
% Software Design % |
|
|
% Cristy % |
|
|
% July 1992 % |
|
|
% % |
|
|
% % |
|
|
% Copyright 1999-2019 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 % |
|
|
% % |
|
|
% 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, % |
|
|
% 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 "MagickCore/studio.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/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/pixel-accessor.h" |
|
|
#include "MagickCore/quantum-private.h" |
|
|
#include "MagickCore/static.h" |
|
|
#include "MagickCore/string_.h" |
|
|
#include "MagickCore/module.h" |
|
|
|
|
|
/* |
|
|
Forward declarations. |
|
|
*/ |
|
|
static MagickBooleanType |
|
|
WriteMONOImage(const ImageInfo *,Image *,ExceptionInfo *); |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% R e a d M O N O I m a g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% ReadMONOImage() reads an image of raw bites in LSB order 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 ReadMONOImage method is: |
|
|
% |
|
|
% Image *ReadMONOImage(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 *ReadMONOImage(const ImageInfo *image_info, |
|
|
ExceptionInfo *exception) |
|
|
{ |
|
|
Image |
|
|
*image; |
|
|
|
|
|
MagickBooleanType |
|
|
status; |
|
|
|
|
|
register Quantum |
|
|
*q; |
|
|
|
|
|
register ssize_t |
|
|
x; |
|
|
|
|
|
size_t |
|
|
bit, |
|
|
byte; |
|
|
|
|
|
ssize_t |
|
|
y; |
|
|
|
|
|
/* |
|
|
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); |
|
|
if ((image->columns == 0) || (image->rows == 0)) |
|
|
ThrowReaderException(OptionError,"MustSpecifyImageSize"); |
|
|
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
|
|
if (status == MagickFalse) |
|
|
{ |
|
|
image=DestroyImageList(image); |
|
|
return((Image *) NULL); |
|
|
} |
|
|
if (DiscardBlobBytes(image,image->offset) == MagickFalse) |
|
|
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
|
|
image->filename); |
|
|
/* |
|
|
Initialize image colormap. |
|
|
*/ |
|
|
image->depth=1; |
|
|
if (AcquireImageColormap(image,2,exception) == MagickFalse) |
|
|
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
|
|
if (image_info->ping != MagickFalse) |
|
|
{ |
|
|
(void) CloseBlob(image); |
|
|
return(GetFirstImageInList(image)); |
|
|
} |
|
|
status=SetImageExtent(image,image->columns,image->rows,exception); |
|
|
if (status == MagickFalse) |
|
|
return(DestroyImageList(image)); |
|
|
/* |
|
|
Convert bi-level image to pixel packets. |
|
|
*/ |
|
|
for (y=0; y < (ssize_t) image->rows; y++) |
|
|
{ |
|
|
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
|
|
if (q == (Quantum *) NULL) |
|
|
break; |
|
|
bit=0; |
|
|
byte=0; |
|
|
for (x=0; x < (ssize_t) image->columns; x++) |
|
|
{ |
|
|
if (bit == 0) |
|
|
byte=(size_t) ReadBlobByte(image); |
|
|
if (image_info->endian == LSBEndian) |
|
|
SetPixelIndex(image,((byte & 0x01) != 0) ? 0x00 : 0x01,q); |
|
|
else |
|
|
SetPixelIndex(image,((byte & 0x01) != 0) ? 0x01 : 0x00,q); |
|
|
bit++; |
|
|
if (bit == 8) |
|
|
bit=0; |
|
|
byte>>=1; |
|
|
q+=GetPixelChannels(image); |
|
|
} |
|
|
if (SyncAuthenticPixels(image,exception) == MagickFalse) |
|
|
break; |
|
|
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
|
|
image->rows); |
|
|
if (status == MagickFalse) |
|
|
break; |
|
|
} |
|
|
(void) SyncImage(image,exception); |
|
|
if (EOFBlob(image) != MagickFalse) |
|
|
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
|
|
image->filename); |
|
|
(void) CloseBlob(image); |
|
|
return(GetFirstImageInList(image)); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% R e g i s t e r M O N O I m a g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% RegisterMONOImage() adds attributes for the MONO 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 RegisterMONOImage method is: |
|
|
% |
|
|
% size_t RegisterMONOImage(void) |
|
|
% |
|
|
*/ |
|
|
ModuleExport size_t RegisterMONOImage(void) |
|
|
{ |
|
|
MagickInfo |
|
|
*entry; |
|
|
|
|
|
entry=AcquireMagickInfo("MONO","MONO","Raw bi-level bitmap"); |
|
|
entry->decoder=(DecodeImageHandler *) ReadMONOImage; |
|
|
entry->encoder=(EncodeImageHandler *) WriteMONOImage; |
|
|
entry->flags|=CoderRawSupportFlag; |
|
|
entry->flags|=CoderEndianSupportFlag; |
|
|
entry->flags^=CoderAdjoinFlag; |
|
|
(void) RegisterMagickInfo(entry); |
|
|
return(MagickImageCoderSignature); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% U n r e g i s t e r M O N O I m a g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% UnregisterMONOImage() removes format registrations made by the |
|
|
% MONO module from the list of supported formats. |
|
|
% |
|
|
% The format of the UnregisterMONOImage method is: |
|
|
% |
|
|
% UnregisterMONOImage(void) |
|
|
% |
|
|
*/ |
|
|
ModuleExport void UnregisterMONOImage(void) |
|
|
{ |
|
|
(void) UnregisterMagickInfo("MONO"); |
|
|
} |
|
|
|
|
|
/* |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
% W r i t e M O N O I m a g e % |
|
|
% % |
|
|
% % |
|
|
% % |
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|
|
% |
|
|
% WriteMONOImage() writes an image of raw bits in LSB order to a file. |
|
|
% |
|
|
% The format of the WriteMONOImage method is: |
|
|
% |
|
|
% MagickBooleanType WriteMONOImage(const ImageInfo *image_info, |
|
|
% Image *image,ExceptionInfo *exception) |
|
|
% |
|
|
% A description of each parameter follows. |
|
|
% |
|
|
% o image_info: the image info. |
|
|
% |
|
|
% o image: The image. |
|
|
% |
|
|
% o exception: return any errors or warnings in this structure. |
|
|
% |
|
|
*/ |
|
|
static MagickBooleanType WriteMONOImage(const ImageInfo *image_info, |
|
|
Image *image,ExceptionInfo *exception) |
|
|
{ |
|
|
MagickBooleanType |
|
|
status; |
|
|
|
|
|
register const Quantum |
|
|
*p; |
|
|
|
|
|
register ssize_t |
|
|
x; |
|
|
|
|
|
size_t |
|
|
bit, |
|
|
byte; |
|
|
|
|
|
ssize_t |
|
|
y; |
|
|
|
|
|
/* |
|
|
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); |
|
|
(void) TransformImageColorspace(image,sRGBColorspace,exception); |
|
|
/* |
|
|
Convert image to a bi-level image. |
|
|
*/ |
|
|
(void) SetImageType(image,BilevelType,exception); |
|
|
for (y=0; y < (ssize_t) image->rows; y++) |
|
|
{ |
|
|
p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
|
|
if (p == (const Quantum *) NULL) |
|
|
break; |
|
|
bit=0; |
|
|
byte=0; |
|
|
for (x=0; x < (ssize_t) image->columns; x++) |
|
|
{ |
|
|
byte>>=1; |
|
|
if (image->endian == LSBEndian) |
|
|
{ |
|
|
if (GetPixelLuma(image,p) < (QuantumRange/2.0)) |
|
|
byte|=0x80; |
|
|
} |
|
|
else |
|
|
if (GetPixelLuma(image,p) >= (QuantumRange/2.0)) |
|
|
byte|=0x80; |
|
|
bit++; |
|
|
if (bit == 8) |
|
|
{ |
|
|
(void) WriteBlobByte(image,(unsigned char) byte); |
|
|
bit=0; |
|
|
byte=0; |
|
|
} |
|
|
p+=GetPixelChannels(image); |
|
|
} |
|
|
if (bit != 0) |
|
|
(void) WriteBlobByte(image,(unsigned char) (byte >> (8-bit))); |
|
|
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
|
|
image->rows); |
|
|
if (status == MagickFalse) |
|
|
break; |
|
|
} |
|
|
(void) CloseBlob(image); |
|
|
return(MagickTrue); |
|
|
}
|
|
|
|
