/ndk-modules/ImageMagick-6.7.3-0/coders/otb.c
C | 387 lines | 218 code | 16 blank | 153 comment | 65 complexity | 0c3b2172d2788b9c02eb319c896e2d94 MD5 | raw file
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % OOO TTTTT BBBB %
- % O O T B B %
- % O O T BBBB %
- % O O T B B %
- % OOO T BBBB %
- % %
- % %
- % Read/Write On-The-Air Image Format %
- % %
- % Software Design %
- % John Cristy %
- % January 2000 %
- % %
- % %
- % Copyright 1999-2011 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/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/quantum-private.h"
- #include "magick/static.h"
- #include "magick/string_.h"
- #include "magick/module.h"
- /*
- Forward declarations.
- */
- static MagickBooleanType
- WriteOTBImage(const ImageInfo *,Image *);
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % R e a d O T B I m a g e %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % ReadOTBImage() reads a on-the-air (level 0) bitmap 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 ReadOTBImage method is:
- %
- % Image *ReadOTBImage(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 *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;
- /*
- 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);
- }
- /*
- Initialize image structure.
- */
- 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));
- }
- /*
- 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 == (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));
- }
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % R e g i s t e r O T B I m a g e %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % RegisterOTBImage() adds attributes for the OTB 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 RegisterOTBImage method is:
- %
- % size_t RegisterOTBImage(void)
- %
- */
- 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);
- }
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % U n r e g i s t e r O T B I m a g e %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % UnregisterOTBImage() removes format registrations made by the
- % OTB module from the list of supported formats.
- %
- % The format of the UnregisterOTBImage method is:
- %
- % UnregisterOTBImage(void)
- %
- */
- ModuleExport void UnregisterOTBImage(void)
- {
- (void) UnregisterMagickInfo("OTB");
- }
- /*
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- % %
- % %
- % %
- % W r i t e O T B I m a g e %
- % %
- % %
- % %
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %
- % WriteOTBImage() writes an image to a file in the On-the-air Bitmap
- % (level 0) image format.
- %
- % The format of the WriteOTBImage method is:
- %
- % MagickBooleanType WriteOTBImage(const ImageInfo *image_info,Image *image)
- %
- % A description of each parameter follows.
- %
- % o image_info: the image info.
- %
- % o image: The image.
- %
- %
- */
- 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;
- /*
- Open output image file.
- */
- 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);
- if (IsRGBColorspace(image->colorspace) == MagickFalse)
- (void) TransformImageColorspace(image,RGBColorspace);
- /*
- Convert image to a bi-level image.
- */
- (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); /* depth */
- 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 (PixelIntensity(p) < ((Quantum) 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);
- }