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jp2.c
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jp2.c
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% JJJ PPPP 222 %
% J P P 2 2 %
% J PPPP 22 %
% J J P 2 %
% JJ P 22222 %
% %
% %
% Read/Write JPEG-2000 Image Format %
% %
% Cristy %
% Nathan Brown %
% June 2001 %
% %
% %
% Copyright @ 1999 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/artifact.h"
#include "MagickCore/attribute.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/color.h"
#include "MagickCore/color-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/option.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/profile-private.h"
#include "MagickCore/property.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/semaphore.h"
#include "MagickCore/static.h"
#include "MagickCore/statistic.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/module.h"
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
#include <openjpeg.h>
#define OPJ_COMPUTE_NUMERIC_VERSION(major,minor,patch) ((major<<24) | (minor<<16) | (patch<<8) | 0)
#define OPJ_NUMERIC_VERSION OPJ_COMPUTE_NUMERIC_VERSION(OPJ_VERSION_MAJOR,OPJ_VERSION_MINOR,OPJ_VERSION_BUILD)
#endif
/*
Forward declarations.
*/
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
static MagickBooleanType
WriteJP2Image(const ImageInfo *,Image *,ExceptionInfo *);
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s J 2 K %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsJ2K() returns MagickTrue if the image format type, identified by the
% magick string, is J2K.
%
% The format of the IsJ2K method is:
%
% MagickBooleanType IsJ2K(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsJ2K(const unsigned char *magick,const size_t length)
{
if (length < 4)
return(MagickFalse);
if (memcmp(magick,"\xff\x4f\xff\x51",4) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s J P 2 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsJP2() returns MagickTrue if the image format type, identified by the
% magick string, is JP2.
%
% The format of the IsJP2 method is:
%
% MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsJP2(const unsigned char *magick,const size_t length)
{
if (length < 4)
return(MagickFalse);
if (memcmp(magick,"\x0d\x0a\x87\x0a",4) == 0)
return(MagickTrue);
if (length < 12)
return(MagickFalse);
if (memcmp(magick,"\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a",12) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d J P 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadJP2Image() reads a JPEG 2000 Image file (JP2) or JPEG 2000
% codestream (JPC) image file and returns it. It allocates the memory
% necessary for the new Image structure and returns a pointer to the new
% image or set of images.
%
% JP2 support is originally written by Nathan Brown, nathanbrown@letu.edu.
%
% The format of the ReadJP2Image method is:
%
% Image *ReadJP2Image(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.
%
*/
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
static void JP2ErrorHandler(const char *message,void *client_data)
{
ExceptionInfo
*exception;
exception=(ExceptionInfo *) client_data;
(void) ThrowMagickException(exception,GetMagickModule(),CoderError,
message,"`%s'","OpenJP2");
}
static OPJ_SIZE_T JP2ReadHandler(void *buffer,OPJ_SIZE_T length,void *context)
{
Image
*image;
ssize_t
count;
image=(Image *) context;
count=ReadBlob(image,(size_t) length,(unsigned char *) buffer);
if (count == 0)
return((OPJ_SIZE_T) -1);
return((OPJ_SIZE_T) count);
}
static OPJ_BOOL JP2SeekHandler(OPJ_OFF_T offset,void *context)
{
Image
*image;
image=(Image *) context;
return(SeekBlob(image,offset,SEEK_SET) < 0 ? OPJ_FALSE : OPJ_TRUE);
}
static OPJ_OFF_T JP2SkipHandler(OPJ_OFF_T offset,void *context)
{
Image
*image;
image=(Image *) context;
return(SeekBlob(image,offset,SEEK_CUR) < 0 ? -1 : offset);
}
static void JP2WarningHandler(const char *message,void *client_data)
{
ExceptionInfo
*exception;
exception=(ExceptionInfo *) client_data;
(void) ThrowMagickException(exception,GetMagickModule(),CoderWarning,
message,"`%s'","OpenJP2");
}
static OPJ_SIZE_T JP2WriteHandler(void *buffer,OPJ_SIZE_T length,void *context)
{
Image
*image;
ssize_t
count;
image=(Image *) context;
count=WriteBlob(image,(size_t) length,(unsigned char *) buffer);
return((OPJ_SIZE_T) count);
}
static MagickBooleanType JP2ComponentHasAlpha(const ImageInfo* image_info,
opj_image_comp_t comp)
{
const char
*option;
if (comp.alpha != 0)
return(MagickTrue);
option=GetImageOption(image_info, "jp2:assume-alpha");
return(IsStringTrue(option));
}
static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception)
{
const char
*option;
Image
*image;
int
jp2_status;
MagickBooleanType
status;
opj_codec_t
*jp2_codec;
opj_codestream_info_v2_t
*jp2_codestream_info;
opj_dparameters_t
parameters;
opj_image_t
*jp2_image;
opj_stream_t
*jp2_stream;
ssize_t
i,
y;
unsigned char
magick[16];
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
image=AcquireImage(image_info,exception);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Initialize JP2 codec.
*/
if (ReadBlob(image,sizeof(magick),magick) != sizeof(magick))
{
image=DestroyImageList(image);
return((Image *) NULL);
}
(void) SeekBlob(image,SEEK_SET,0);
if (LocaleCompare(image_info->magick,"JPT") == 0)
jp2_codec=opj_create_decompress(OPJ_CODEC_JPT);
else
if (IsJ2K(magick,sizeof(magick)) != MagickFalse)
jp2_codec=opj_create_decompress(OPJ_CODEC_J2K);
else
if (IsJP2(magick,sizeof(magick)) != MagickFalse)
jp2_codec=opj_create_decompress(OPJ_CODEC_JP2);
else
ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
opj_set_warning_handler(jp2_codec,JP2WarningHandler,exception);
opj_set_error_handler(jp2_codec,JP2ErrorHandler,exception);
opj_set_default_decoder_parameters(¶meters);
option=GetImageOption(image_info,"jp2:reduce-factor");
if (option != (const char *) NULL)
parameters.cp_reduce=(unsigned int) StringToInteger(option);
option=GetImageOption(image_info,"jp2:quality-layers");
if (option != (const char *) NULL)
parameters.cp_layer=(unsigned int) StringToInteger(option);
if (opj_setup_decoder(jp2_codec,¶meters) == 0)
{
opj_destroy_codec(jp2_codec);
ThrowReaderException(DelegateError,"UnableToManageJP2Stream");
}
jp2_stream=opj_stream_create(OPJ_J2K_STREAM_CHUNK_SIZE,1);
opj_stream_set_read_function(jp2_stream,JP2ReadHandler);
opj_stream_set_write_function(jp2_stream,JP2WriteHandler);
opj_stream_set_seek_function(jp2_stream,JP2SeekHandler);
opj_stream_set_skip_function(jp2_stream,JP2SkipHandler);
opj_stream_set_user_data(jp2_stream,image,NULL);
opj_stream_set_user_data_length(jp2_stream,GetBlobSize(image));
jp2_image=(opj_image_t *) NULL;
if (opj_read_header(jp2_stream,jp2_codec,&jp2_image) == 0)
{
opj_stream_destroy(jp2_stream);
opj_destroy_codec(jp2_codec);
ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
}
jp2_codestream_info=opj_get_cstr_info(jp2_codec);
if (AcquireMagickResource(ListLengthResource,(MagickSizeType)
jp2_codestream_info->m_default_tile_info.numlayers) == MagickFalse)
{
opj_stream_destroy(jp2_stream);
opj_destroy_codec(jp2_codec);
ThrowReaderException(ResourceLimitError,"ListLengthExceedsLimit");
}
jp2_status=OPJ_TRUE;
if ((AcquireMagickResource(WidthResource,(size_t) jp2_image->comps[0].w) == MagickFalse) ||
(AcquireMagickResource(WidthResource,(size_t) jp2_image->x1) == MagickFalse) ||
(AcquireMagickResource(HeightResource,(size_t) jp2_image->comps[0].h) == MagickFalse) ||
(AcquireMagickResource(HeightResource,(size_t) jp2_image->y1) == MagickFalse))
{
opj_stream_destroy(jp2_stream);
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
}
if (image->ping == MagickFalse)
{
if ((image->columns != 0) && (image->rows != 0))
/*
Extract an area from the image.
*/
jp2_status=opj_set_decode_area(jp2_codec,jp2_image,
(OPJ_INT32) image->extract_info.x,(OPJ_INT32) image->extract_info.y,
(OPJ_INT32) (image->extract_info.x+(ssize_t) image->columns),
(OPJ_INT32) (image->extract_info.y+(ssize_t) image->rows));
else
jp2_status=opj_set_decode_area(jp2_codec,jp2_image,0,0,
(int) jp2_image->comps[0].w,(int) jp2_image->comps[0].h);
if (jp2_status == OPJ_FALSE)
{
opj_stream_destroy(jp2_stream);
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
}
}
if ((image_info->number_scenes != 0) && (image_info->scene != 0))
jp2_status=opj_get_decoded_tile(jp2_codec,jp2_stream,jp2_image,
(unsigned int) image_info->scene-1);
else
if (image->ping == MagickFalse)
{
jp2_status=opj_decode(jp2_codec,jp2_stream,jp2_image);
if (jp2_status != OPJ_FALSE)
jp2_status=opj_end_decompress(jp2_codec,jp2_stream);
}
if (jp2_status == OPJ_FALSE)
{
opj_stream_destroy(jp2_stream);
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
ThrowReaderException(DelegateError,"UnableToDecodeImageFile");
}
if (jp2_image->numcomps >= MaxPixelChannels)
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
{
if ((jp2_image->comps[i].dx == 0) || (jp2_image->comps[i].dy == 0) ||
(jp2_image->comps[0].prec != jp2_image->comps[i].prec) ||
(jp2_image->comps[0].prec > 64) ||
(jp2_image->comps[0].sgnd != jp2_image->comps[i].sgnd))
{
opj_stream_destroy(jp2_stream);
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported")
}
}
opj_stream_destroy(jp2_stream);
if (image->ping == MagickFalse)
{
for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
if (jp2_image->comps[i].data == NULL)
{
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
ThrowReaderException(CoderError,
"IrregularChannelGeometryNotSupported")
}
}
/*
Convert JP2 image.
*/
image->columns=(size_t) jp2_image->comps[0].w;
image->rows=(size_t) jp2_image->comps[0].h;
image->depth=jp2_image->comps[0].prec;
image->compression=JPEG2000Compression;
if (jp2_image->numcomps == 1)
SetImageColorspace(image,GRAYColorspace,exception);
else
if (jp2_image->color_space == 2)
SetImageColorspace(image,GRAYColorspace,exception);
else
if (jp2_image->color_space == 3)
SetImageColorspace(image,Rec601YCbCrColorspace,exception);
if (jp2_image->numcomps > 3)
{
size_t
number_meta_channels;
number_meta_channels=jp2_image->numcomps-3;
if (JP2ComponentHasAlpha(image_info,jp2_image->comps[3]) != MagickFalse)
{
image->alpha_trait=BlendPixelTrait;
number_meta_channels-=1;
}
if (number_meta_channels > 0)
{
status=SetPixelMetaChannels(image,(size_t) number_meta_channels,
exception);
if (status == MagickFalse)
{
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
return(DestroyImageList(image));
}
}
}
else if (jp2_image->numcomps == 2)
{
if (JP2ComponentHasAlpha(image_info,jp2_image->comps[1]) != MagickFalse)
image->alpha_trait=BlendPixelTrait;
}
else if ((jp2_image->numcomps == 1) && (jp2_image->comps[0].alpha != 0))
image->alpha_trait=BlendPixelTrait;
if (jp2_image->icc_profile_buf != (unsigned char *) NULL)
{
StringInfo
*profile;
profile=BlobToProfileStringInfo("icc",jp2_image->icc_profile_buf,
jp2_image->icc_profile_len,exception);
(void) SetImageProfilePrivate(image,profile,exception);
}
if (image->ping != MagickFalse)
{
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
return(GetFirstImageInList(image));
}
status=SetImageExtent(image,image->columns,image->rows,exception);
if (status == MagickFalse)
{
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
return(DestroyImageList(image));
}
for (y=0; y < (ssize_t) image->rows; y++)
{
Quantum
*magick_restrict q;
ssize_t
x;
q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
for (i=0; i < (ssize_t) jp2_image->numcomps; i++)
{
double
pixel,
scale;
ssize_t
index,
pad;
pad=(ssize_t) image->columns % jp2_image->comps[i].dx;
index=y/jp2_image->comps[i].dy*((ssize_t) image->columns+pad)/
jp2_image->comps[i].dx+x/jp2_image->comps[i].dx;
if ((index < 0) ||
(index >= (jp2_image->comps[i].h*jp2_image->comps[i].w)))
{
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
ThrowReaderException(CoderError,
"IrregularChannelGeometryNotSupported")
}
scale=(double) QuantumRange/(double) ((MagickULLConstant(1) <<
jp2_image->comps[i].prec)-1);
pixel=scale*(jp2_image->comps[i].data[index]+(ssize_t)
(jp2_image->comps[i].sgnd ? MagickULLConstant(1) <<
(jp2_image->comps[i].prec-1) : 0));
switch (i)
{
case 0:
{
if (jp2_image->numcomps == 1)
{
SetPixelGray(image,ClampToQuantum(pixel),q);
if (jp2_image->comps[i].alpha != 0)
SetPixelAlpha(image,ClampToQuantum(pixel),q);
break;
}
SetPixelRed(image,ClampToQuantum(pixel),q);
SetPixelGreen(image,ClampToQuantum(pixel),q);
SetPixelBlue(image,ClampToQuantum(pixel),q);
break;
}
case 1:
{
if ((jp2_image->numcomps == 2) && (jp2_image->comps[i].alpha != 0))
{
SetPixelAlpha(image,ClampToQuantum(pixel),q);
break;
}
SetPixelGreen(image,ClampToQuantum(pixel),q);
break;
}
case 2:
{
SetPixelBlue(image,ClampToQuantum(pixel),q);
break;
}
case 3:
{
if ((image->alpha_trait & BlendPixelTrait) != 0)
SetPixelAlpha(image,ClampToQuantum(pixel),q);
else
SetPixelChannel(image,MetaPixelChannels,ClampToQuantum(pixel),q);
break;
}
default:
{
ssize_t
offset = MetaPixelChannels+i-3;
if ((image->alpha_trait & BlendPixelTrait) != 0)
offset--;
SetPixelChannel(image,(PixelChannel) offset,ClampToQuantum(pixel),
q);
break;
}
}
}
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
/*
Free resources.
*/
opj_destroy_codec(jp2_codec);
opj_image_destroy(jp2_image);
(void) CloseBlob(image);
if ((image_info->number_scenes != 0) && (image_info->scene != 0))
AppendImageToList(&image,CloneImage(image,0,0,MagickTrue,exception));
return(GetFirstImageInList(image));
}
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r J P 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterJP2Image() adds attributes for the JP2 image format to the list of
% supported formats. The attributes include the image format tag, a method
% 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 RegisterJP2Image method is:
%
% size_t RegisterJP2Image(void)
%
*/
ModuleExport size_t RegisterJP2Image(void)
{
char
version[MagickPathExtent];
MagickInfo
*entry;
*version='\0';
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
(void) FormatLocaleString(version,MagickPathExtent,"%s",opj_version());
#endif
entry=AcquireMagickInfo("JP2","JP2","JPEG-2000 File Format Syntax");
if (*version != '\0')
entry->version=ConstantString(version);
entry->mime_type=ConstantString("image/jp2");
entry->magick=(IsImageFormatHandler *) IsJP2;
entry->flags^=CoderAdjoinFlag;
entry->flags|=CoderDecoderSeekableStreamFlag;
entry->flags|=CoderEncoderSeekableStreamFlag;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadJP2Image;
entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
(void) RegisterMagickInfo(entry);
entry=AcquireMagickInfo("JP2","J2C","JPEG-2000 Code Stream Syntax");
if (*version != '\0')
entry->version=ConstantString(version);
entry->mime_type=ConstantString("image/jp2");
entry->magick=(IsImageFormatHandler *) IsJ2K;
entry->flags^=CoderAdjoinFlag;
entry->flags|=CoderDecoderSeekableStreamFlag;
entry->flags|=CoderEncoderSeekableStreamFlag;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadJP2Image;
entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
(void) RegisterMagickInfo(entry);
entry=AcquireMagickInfo("JP2","J2K","JPEG-2000 Code Stream Syntax");
if (*version != '\0')
entry->version=ConstantString(version);
entry->mime_type=ConstantString("image/jp2");
entry->magick=(IsImageFormatHandler *) IsJ2K;
entry->flags^=CoderAdjoinFlag;
entry->flags|=CoderDecoderSeekableStreamFlag;
entry->flags|=CoderEncoderSeekableStreamFlag;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadJP2Image;
entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
(void) RegisterMagickInfo(entry);
entry=AcquireMagickInfo("JP2","JPM","JPEG-2000 File Format Syntax");
if (*version != '\0')
entry->version=ConstantString(version);
entry->mime_type=ConstantString("image/jp2");
entry->magick=(IsImageFormatHandler *) IsJP2;
entry->flags^=CoderAdjoinFlag;
entry->flags|=CoderDecoderSeekableStreamFlag;
entry->flags|=CoderEncoderSeekableStreamFlag;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadJP2Image;
entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
(void) RegisterMagickInfo(entry);
entry=AcquireMagickInfo("JP2","JPT","JPEG-2000 File Format Syntax");
if (*version != '\0')
entry->version=ConstantString(version);
entry->mime_type=ConstantString("image/jp2");
entry->magick=(IsImageFormatHandler *) IsJP2;
entry->flags^=CoderAdjoinFlag;
entry->flags|=CoderDecoderSeekableStreamFlag;
entry->flags|=CoderEncoderSeekableStreamFlag;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadJP2Image;
entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
(void) RegisterMagickInfo(entry);
entry=AcquireMagickInfo("JP2","JPC","JPEG-2000 Code Stream Syntax");
if (*version != '\0')
entry->version=ConstantString(version);
entry->mime_type=ConstantString("image/jp2");
entry->magick=(IsImageFormatHandler *) IsJP2;
entry->flags^=CoderAdjoinFlag;
entry->flags|=CoderDecoderSeekableStreamFlag;
entry->flags|=CoderEncoderSeekableStreamFlag;
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadJP2Image;
entry->encoder=(EncodeImageHandler *) WriteJP2Image;
#endif
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r J P 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterJP2Image() removes format registrations made by the JP2 module
% from the list of supported formats.
%
% The format of the UnregisterJP2Image method is:
%
% UnregisterJP2Image(void)
%
*/
ModuleExport void UnregisterJP2Image(void)
{
(void) UnregisterMagickInfo("JPC");
(void) UnregisterMagickInfo("JPT");
(void) UnregisterMagickInfo("JPM");
(void) UnregisterMagickInfo("JP2");
(void) UnregisterMagickInfo("J2K");
}
#if defined(MAGICKCORE_LIBOPENJP2_DELEGATE)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e J P 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteJP2Image() writes an image in the JPEG 2000 image format.
%
% JP2 support originally written by Nathan Brown, nathanbrown@letu.edu
%
% The format of the WriteJP2Image method is:
%
% MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
% ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static void CinemaProfileCompliance(const opj_image_t *jp2_image,
opj_cparameters_t *parameters)
{
/*
Digital Cinema 4K profile compliant codestream.
*/
parameters->tile_size_on=OPJ_FALSE;
parameters->cp_tdx=1;
parameters->cp_tdy=1;
parameters->tp_flag='C';
parameters->tp_on=1;
parameters->cp_tx0=0;
parameters->cp_ty0=0;
parameters->image_offset_x0=0;
parameters->image_offset_y0=0;
parameters->cblockw_init=32;
parameters->cblockh_init=32;
parameters->csty|=0x01;
parameters->prog_order=OPJ_CPRL;
parameters->roi_compno=(-1);
parameters->subsampling_dx=1;
parameters->subsampling_dy=1;
parameters->irreversible=1;
if ((jp2_image->comps[0].w == 2048) || (jp2_image->comps[0].h == 1080))
{
/*
Digital Cinema 2K.
*/
#if OPJ_NUMERIC_VERSION >= OPJ_COMPUTE_NUMERIC_VERSION(2,1,0)
parameters->rsiz=OPJ_PROFILE_CINEMA_2K;
parameters->max_cs_size=OPJ_CINEMA_24_CS;
parameters->max_comp_size=OPJ_CINEMA_24_COMP;
#else
parameters->cp_cinema=OPJ_CINEMA2K_24;
parameters->cp_rsiz=OPJ_CINEMA2K;
parameters->max_comp_size=1041666;
#endif
if (parameters->numresolution > 6)
parameters->numresolution=6;
}
if ((jp2_image->comps[0].w == 4096) || (jp2_image->comps[0].h == 2160))
{
/*
Digital Cinema 4K.
*/
#if OPJ_NUMERIC_VERSION >= OPJ_COMPUTE_NUMERIC_VERSION(2,1,0)
parameters->rsiz=OPJ_PROFILE_CINEMA_4K;
parameters->max_cs_size=OPJ_CINEMA_24_CS;
parameters->max_comp_size=OPJ_CINEMA_24_COMP;
#else
parameters->cp_cinema=OPJ_CINEMA4K_24;
parameters->cp_rsiz=OPJ_CINEMA4K;
parameters->max_comp_size=1041666;
#endif
if (parameters->numresolution < 1)
parameters->numresolution=1;
if (parameters->numresolution > 7)
parameters->numresolution=7;
parameters->numpocs=2;
parameters->POC[0].tile=1;
parameters->POC[0].resno0=0;
parameters->POC[0].compno0=0;
parameters->POC[0].layno1=1;
parameters->POC[0].resno1=(unsigned int) parameters->numresolution-1;
parameters->POC[0].compno1=3;
parameters->POC[0].prg1=OPJ_CPRL;
parameters->POC[1].tile=1;
parameters->POC[1].resno0=(unsigned int) parameters->numresolution-1;
parameters->POC[1].compno0=0;
parameters->POC[1].layno1=1;
parameters->POC[1].resno1=(unsigned int) parameters->numresolution;
parameters->POC[1].compno1=3;
parameters->POC[1].prg1=OPJ_CPRL;
}
parameters->tcp_numlayers=1;
parameters->tcp_rates[0]=(((float) jp2_image->numcomps*jp2_image->comps[0].w*
jp2_image->comps[0].h*jp2_image->comps[0].prec))/((float)
parameters->max_comp_size*8*jp2_image->comps[0].dx*jp2_image->comps[0].dy);
parameters->cp_disto_alloc=OPJ_TRUE;
}
static inline int CalculateNumResolutions(size_t width,size_t height)
{
int
i;
for (i=1; i < 6; i++)
if ((width < ((size_t) MagickULLConstant(1) << i)) ||
(height < ((size_t) MagickULLConstant(1) << i)))
break;
return(i);
}
static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
ExceptionInfo *exception)
{
const char
*option,
*property;
int
jp2_status;
MagickBooleanType
status;
opj_codec_t
*jp2_codec;
OPJ_COLOR_SPACE
jp2_colorspace;
opj_cparameters_t
*parameters;
opj_image_cmptparm_t
jp2_info[5];
opj_image_t
*jp2_image;
opj_stream_t
*jp2_stream;
ssize_t
i,
y;
unsigned int
channels;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
if (status == MagickFalse)
return(status);
/*
Initialize JPEG 2000 API.
*/
parameters=(opj_cparameters_t *) AcquireMagickMemory(sizeof(*parameters));
if (parameters == (opj_cparameters_t *) NULL)
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
opj_set_default_encoder_parameters(parameters);
option=GetImageOption(image_info,"jp2:number-resolutions");
if (option != (const char *) NULL)
parameters->numresolution=StringToInteger(option);
else
parameters->numresolution=CalculateNumResolutions(image->columns,
image->rows);
parameters->tcp_numlayers=1;
parameters->tcp_rates[0]=0; /* lossless */
parameters->cp_disto_alloc=OPJ_TRUE;
if ((image_info->quality != 0) && (image_info->quality != 100))
{
parameters->tcp_distoratio[0]=(double) image_info->quality;
parameters->cp_fixed_quality=OPJ_TRUE;
parameters->cp_disto_alloc=OPJ_FALSE;
}
if (image_info->extract != (char *) NULL)
{
int
flags;
RectangleInfo
geometry;
/*
Set tile size.
*/
(void) memset(&geometry,0,sizeof(geometry));
flags=(int) ParseAbsoluteGeometry(image_info->extract,&geometry);
parameters->cp_tdx=(int) geometry.width;
parameters->cp_tdy=(int) geometry.width;
if ((flags & HeightValue) != 0)
parameters->cp_tdy=(int) geometry.height;
if ((flags & XValue) != 0)
parameters->cp_tx0=geometry.x;
if ((flags & YValue) != 0)
parameters->cp_ty0=geometry.y;
parameters->tile_size_on=OPJ_TRUE;
parameters->numresolution=CalculateNumResolutions((size_t)
parameters->cp_tdx,(size_t) parameters->cp_tdy);
}
option=GetImageOption(image_info,"jp2:quality");
if (option != (const char *) NULL)
{
const char