--- /dev/null
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% PPPP GGGG X X %
+% P P G X X %
+% PPPP G GG X %
+% P G G X X %
+% P GGG X X %
+% %
+% %
+% PGX JPEG 2000 Format %
+% %
+% Software Design %
+% Cristy %
+% July 2016 %
+% %
+% %
+% Copyright 1999-2017 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. %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+*/
+\f
+/*
+ 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/quantum-private.h"
+#include "MagickCore/static.h"
+#include "MagickCore/string_.h"
+#include "MagickCore/module.h"
+\f
+/*
+ Forward declarations.
+*/
+static MagickBooleanType
+ WritePGXImage(const ImageInfo *,Image *,ExceptionInfo *);
+\f
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% I s P G X %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% IsPGXreturns True if the image format type, identified by the magick
+% string, is PGX.
+%
+% The format of the IsPGX method is:
+%
+% unsigned int IsPGX(const unsigned char *magick,const size_t length)
+%
+% A description of each parameter follows:
+%
+% o status: Method IsPGX returns True if the image format type is PGX.
+%
+% o magick: This string is generally the first few bytes of an image file
+% or blob.
+%
+% o length: Specifies the length of the magick string.
+%
+%
+*/
+static unsigned int IsPGX(const unsigned char *magick,const size_t length)
+{
+ if (length < 5)
+ return(MagickFalse);
+ if ((memcmp(magick,"PG ML",5) == 0) || (memcmp(magick,"PG LM",5) == 0))
+ return(MagickTrue);
+ return(MagickFalse);
+}
+\f
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% R e a d P G X I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% ReadPGXImage() reads an image of raw bits 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 ReadPGXImage method is:
+%
+% Image *ReadPGXImage(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 *ReadPGXImage(const ImageInfo *image_info,ExceptionInfo *exception)
+{
+ char
+ buffer[MagickPathExtent],
+ endian[MagickPathExtent],
+ sans[MagickPathExtent],
+ sign[MagickPathExtent];
+
+ const unsigned char
+ *pixels;
+
+ Image
+ *image;
+
+ int
+ height,
+ precision,
+ width;
+
+ QuantumInfo
+ *quantum_info;
+
+ MagickBooleanType
+ status;
+
+ size_t
+ length;
+
+ ssize_t
+ count,
+ 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);
+ status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
+ if (status == MagickFalse)
+ {
+ image=DestroyImageList(image);
+ return((Image *) NULL);
+ }
+ if (ReadBlobString(image,buffer) == (char *) NULL)
+ ThrowReaderException(CorruptImageError,"ImproperImageHeader");
+ count=(ssize_t) sscanf(buffer,"PG%[ \t]%2s%[ \t+-]%d%[ \t]%d%[ \t]%d",sans,
+ endian,sign,&precision,sans,&width,sans,&height);
+ image->depth=(size_t) precision;
+ if (LocaleCompare(endian,"ML") == 0)
+ image->endian=MSBEndian;
+ image->columns=(size_t) width;
+ image->rows=(size_t) height;
+ if ((image->columns == 0) || (image->rows == 0))
+ ThrowReaderException(CorruptImageError,"ImproperImageHeader");
+ 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 PGX image.
+ */
+ (void) SetImageColorspace(image,GRAYColorspace,exception);
+ quantum_info=AcquireQuantumInfo(image_info,image);
+ if (quantum_info == (QuantumInfo *) NULL)
+ ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
+ length=GetQuantumExtent(image,quantum_info,GrayQuantum);
+ for (y=0; y < (ssize_t) image->rows; y++)
+ {
+ register Quantum
+ *magick_restrict q;
+
+ q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
+ if (q == (Quantum *) NULL)
+ break;
+ pixels=(const unsigned char *) ReadBlobStream(image,length,
+ GetQuantumPixels(quantum_info),&count);
+ if (count != (ssize_t) length)
+ ThrowReaderException(CorruptImageError,"UnableToReadImageData");
+ (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
+ GrayQuantum,pixels,exception);
+ if (SyncAuthenticPixels(image,exception) == MagickFalse)
+ break;
+ if (SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,image->rows) == MagickFalse)
+ break;
+ }
+ SetQuantumImageType(image,GrayQuantum);
+ quantum_info=DestroyQuantumInfo(quantum_info);
+ if (EOFBlob(image) != MagickFalse)
+ ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
+ image->filename);
+ (void) CloseBlob(image);
+ return(GetFirstImageInList(image));
+}
+\f
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% R e g i s t e r P G X I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% RegisterPGXImage() adds attributes for the PGX 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 RegisterPGXImage method is:
+%
+% size_t RegisterPGXImage(void)
+%
+*/
+ModuleExport size_t RegisterPGXImage(void)
+{
+ MagickInfo
+ *entry;
+
+ entry=AcquireMagickInfo("PGX","PGX","JPEG 2000 uncompressed format");
+ entry->decoder=(DecodeImageHandler *) ReadPGXImage;
+ entry->encoder=(EncodeImageHandler *) WritePGXImage;
+ entry->magick=(IsImageFormatHandler *) IsPGX;
+ entry->flags^=CoderAdjoinFlag;
+ entry->flags^=CoderUseExtensionFlag;
+ (void) RegisterMagickInfo(entry);
+ return(MagickImageCoderSignature);
+}
+\f
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% U n r e g i s t e r P G X I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% UnregisterPGXImage() removes format registrations made by the
+% PGX module from the list of supported formats.
+%
+% The format of the UnregisterPGXImage method is:
+%
+% UnregisterPGXImage(void)
+%
+*/
+ModuleExport void UnregisterPGXImage(void)
+{
+ (void) UnregisterMagickInfo("PGX");
+}
+\f
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% W r i t e P G X I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% WritePGXImage() writes an image of raw bits in LSB order to a file.
+%
+% The format of the WritePGXImage method is:
+%
+% MagickBooleanType WritePGXImage(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 WritePGXImage(const ImageInfo *image_info,Image *image,
+ ExceptionInfo *exception)
+{
+ char
+ buffer[MagickPathExtent];
+
+ MagickBooleanType
+ status;
+
+ QuantumInfo
+ *quantum_info;
+
+ register const Quantum
+ *p;
+
+ size_t
+ length;
+
+ ssize_t
+ count,
+ y;
+
+ unsigned char
+ *pixels;
+
+ /*
+ 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) FormatLocaleString(buffer,MagickPathExtent,"PG ML + %ld %lu %lu\n",
+ image->depth,image->columns,image->rows);
+ (void) WriteBlob(image,strlen(buffer),(unsigned char *) buffer);
+ (void) TransformImageColorspace(image,sRGBColorspace,exception);
+ quantum_info=AcquireQuantumInfo(image_info,image);
+ pixels=(unsigned char *) GetQuantumPixels(quantum_info);
+ for (y=0; y < (ssize_t) image->rows; y++)
+ {
+ p=GetVirtualPixels(image,0,y,image->columns,1,exception);
+ if (p == (const Quantum *) NULL)
+ break;
+ length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
+ GrayQuantum,pixels,exception);
+ count=WriteBlob(image,length,pixels);
+ if (count != (ssize_t) length)
+ ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
+ count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
+ status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
+ image->rows);
+ if (status == MagickFalse)
+ break;
+ }
+ quantum_info=DestroyQuantumInfo(quantum_info);
+ (void) CloseBlob(image);
+ return(status);
+}
projects / imagemagick / commitdiff