| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % JJJ PPPP 222 % |
| % J P P 2 2 % |
| % J PPPP 22 % |
| % J J P 2 % |
| % JJ P 22222 % |
| % % |
| % % |
| % Read/Write JPEG-2000 Image Format % |
| % % |
| % John Cristy % |
| % Nathan Brown % |
| % June 2001 % |
| % % |
| % % |
| % Copyright 1999-2009 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/attribute.h" |
| #include "magick/blob.h" |
| #include "magick/blob-private.h" |
| #include "magick/cache.h" |
| #include "magick/colorspace.h" |
| #include "magick/color.h" |
| #include "magick/color-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/option.h" |
| #include "magick/profile.h" |
| #include "magick/quantum-private.h" |
| #include "magick/static.h" |
| #include "magick/statistic.h" |
| #include "magick/string_.h" |
| #include "magick/module.h" |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| #ifndef JAS_IMAGE_CM_GRAY |
| #define JAS_IMAGE_CM_GRAY JAS_IMAGE_CS_GRAY |
| #endif |
| #ifndef JAS_IMAGE_CM_RGB |
| #define JAS_IMAGE_CM_RGB JAS_IMAGE_CS_RGB |
| #endif |
| #if !defined(uchar) |
| #define uchar unsigned char |
| #endif |
| #if !defined(ushort) |
| #define ushort unsigned short |
| #endif |
| #if !defined(uint) |
| #define uint unsigned int |
| #endif |
| #if !defined(longlong) |
| #define longlong long long |
| #endif |
| #if !defined(ulonglong) |
| #define ulonglong unsigned long long |
| #endif |
| |
| #ifdef __VMS |
| #define JAS_VERSION 1.700.0 |
| #define PACKAGE jasper |
| #define VERSION 1.700.0 |
| #endif |
| #undef PACKAGE_NAME |
| #undef PACKAGE_STRING |
| #undef PACKAGE_TARNAME |
| #undef PACKAGE_VERSION |
| #include "jasper/jasper.h" |
| #undef PACKAGE_NAME |
| #undef PACKAGE_STRING |
| #undef PACKAGE_TARNAME |
| #undef PACKAGE_VERSION |
| |
| #endif |
| |
| /* |
| Forward declarations. |
| */ |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| static MagickBooleanType |
| WriteJP2Image(const ImageInfo *,Image *); |
| #endif |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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 < 9) |
| return(MagickFalse); |
| if (memcmp(magick+4,"\152\120\040\040\015",5) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s J P C % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsJPC()() returns MagickTrue if the image format type, identified by the |
| % magick string, is JPC. |
| % |
| % The format of the IsJPC method is: |
| % |
| % MagickBooleanType IsJPC(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 IsJPC(const unsigned char *magick,const size_t length) |
| { |
| if (length < 2) |
| return(MagickFalse); |
| if (memcmp(magick,"\377\117",2) == 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_JP2_DELEGATE) |
| |
| typedef struct _StreamManager |
| { |
| jas_stream_t |
| *stream; |
| |
| Image |
| *image; |
| } StreamManager; |
| |
| static int BlobRead(jas_stream_obj_t *object,char *buffer,const int length) |
| { |
| ssize_t |
| count; |
| |
| StreamManager |
| *source; |
| |
| source=(StreamManager *) object; |
| count=ReadBlob(source->image,(size_t) length,(unsigned char *) buffer); |
| return((int) count); |
| } |
| |
| static int BlobWrite(jas_stream_obj_t *object,char *buffer,const int length) |
| { |
| ssize_t |
| count; |
| |
| StreamManager |
| *source; |
| |
| source=(StreamManager *) object; |
| count=WriteBlob(source->image,(size_t) length,(unsigned char *) buffer); |
| return((int) count); |
| } |
| |
| static long BlobSeek(jas_stream_obj_t *object,long offset,int origin) |
| { |
| StreamManager |
| *source; |
| |
| source=(StreamManager *) object; |
| return((long) SeekBlob(source->image,offset,origin)); |
| } |
| |
| static int BlobClose(jas_stream_obj_t *object) |
| { |
| StreamManager |
| *source; |
| |
| source=(StreamManager *) object; |
| (void) CloseBlob(source->image); |
| source=(StreamManager *) RelinquishMagickMemory(source); |
| return(0); |
| } |
| |
| static inline size_t MagickMax(const size_t x,const size_t y) |
| { |
| if (x > y) |
| return(x); |
| return(y); |
| } |
| |
| static inline size_t MagickMin(const size_t x,const size_t y) |
| { |
| if (x < y) |
| return(x); |
| return(y); |
| } |
| |
| static jas_stream_t *JP2StreamManager(Image *image) |
| { |
| static jas_stream_ops_t |
| StreamOperators = |
| { |
| BlobRead, |
| BlobWrite, |
| BlobSeek, |
| BlobClose |
| }; |
| |
| jas_stream_t |
| *stream; |
| |
| StreamManager |
| *source; |
| |
| stream=(jas_stream_t *) jas_malloc(sizeof(*stream)); |
| if (stream == (jas_stream_t *) NULL) |
| return((jas_stream_t *) NULL); |
| (void) ResetMagickMemory(stream,0,sizeof(*stream)); |
| stream->rwlimit_=(-1); |
| stream->obj_=(jas_stream_obj_t *) jas_malloc(sizeof(StreamManager)); |
| if (stream->obj_ == (jas_stream_obj_t *) NULL) |
| return((jas_stream_t *) NULL); |
| (void) ResetMagickMemory(stream->obj_,0,sizeof(StreamManager)); |
| stream->ops_=(&StreamOperators); |
| stream->openmode_=JAS_STREAM_READ | JAS_STREAM_WRITE | JAS_STREAM_BINARY; |
| stream->bufbase_=(unsigned char *) jas_malloc(JAS_STREAM_BUFSIZE+ |
| JAS_STREAM_MAXPUTBACK); |
| if (stream->bufbase_ == (void *) NULL) |
| { |
| stream->bufbase_=stream->tinybuf_; |
| stream->bufsize_=1; |
| } |
| else |
| { |
| stream->bufmode_=JAS_STREAM_FREEBUF | JAS_STREAM_BUFMODEMASK; |
| stream->bufsize_=JAS_STREAM_BUFSIZE; |
| } |
| stream->bufstart_=(&stream->bufbase_[JAS_STREAM_MAXPUTBACK]); |
| stream->ptr_=stream->bufstart_; |
| stream->cnt_=0; |
| source=(StreamManager *) stream->obj_; |
| source->image=image; |
| return(stream); |
| } |
| |
| static Image *ReadJP2Image(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| Image |
| *image; |
| |
| jas_cmprof_t |
| *cm_profile; |
| |
| jas_iccprof_t |
| *icc_profile; |
| |
| jas_image_t |
| *jp2_image; |
| |
| jas_matrix_t |
| *pixels[4]; |
| |
| jas_stream_t |
| *jp2_stream; |
| |
| long |
| components[4], |
| y; |
| |
| MagickBooleanType |
| status; |
| |
| QuantumAny |
| pixel, |
| range[4]; |
| |
| register long |
| i, |
| x; |
| |
| register PixelPacket |
| *q; |
| |
| unsigned long |
| maximum_component_depth, |
| number_components, |
| x_step[4], |
| y_step[4]; |
| |
| /* |
| 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 JPEG 2000 API. |
| */ |
| jp2_stream=JP2StreamManager(image); |
| if (jp2_stream == (jas_stream_t *) NULL) |
| ThrowReaderException(DelegateError,"UnableToManageJP2Stream"); |
| jp2_image=jas_image_decode(jp2_stream,-1,0); |
| if (jp2_image == (jas_image_t *) NULL) |
| { |
| (void) jas_stream_close(jp2_stream); |
| ThrowReaderException(DelegateError,"UnableToDecodeImageFile"); |
| } |
| switch (jas_clrspc_fam(jas_image_clrspc(jp2_image))) |
| { |
| case JAS_CLRSPC_FAM_RGB: |
| { |
| components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_R); |
| components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_G); |
| components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_RGB_B); |
| if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0)) |
| { |
| (void) jas_stream_close(jp2_stream); |
| jas_image_destroy(jp2_image); |
| ThrowReaderException(CorruptImageError,"MissingImageChannel"); |
| } |
| number_components=3; |
| components[3]=jas_image_getcmptbytype(jp2_image,3); |
| if (components[3] > 0) |
| { |
| image->matte=MagickTrue; |
| number_components++; |
| } |
| break; |
| } |
| case JAS_CLRSPC_FAM_GRAY: |
| { |
| components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_GRAY_Y); |
| if (components[0] < 0) |
| { |
| (void) jas_stream_close(jp2_stream); |
| jas_image_destroy(jp2_image); |
| ThrowReaderException(CorruptImageError,"MissingImageChannel"); |
| } |
| number_components=1; |
| break; |
| } |
| case JAS_CLRSPC_FAM_YCBCR: |
| { |
| components[0]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_Y); |
| components[1]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CB); |
| components[2]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_YCBCR_CR); |
| if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0)) |
| { |
| (void) jas_stream_close(jp2_stream); |
| jas_image_destroy(jp2_image); |
| ThrowReaderException(CorruptImageError,"MissingImageChannel"); |
| } |
| number_components=3; |
| components[3]=jas_image_getcmptbytype(jp2_image,JAS_IMAGE_CT_UNKNOWN); |
| if (components[3] > 0) |
| { |
| image->matte=MagickTrue; |
| number_components++; |
| } |
| image->colorspace=YCbCrColorspace; |
| break; |
| } |
| default: |
| { |
| (void) jas_stream_close(jp2_stream); |
| jas_image_destroy(jp2_image); |
| ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported"); |
| } |
| } |
| image->columns=jas_image_width(jp2_image); |
| image->rows=jas_image_height(jp2_image); |
| image->compression=JPEG2000Compression; |
| for (i=0; i < (long) number_components; i++) |
| { |
| unsigned long |
| height, |
| width; |
| |
| width=(unsigned long) (jas_image_cmptwidth(jp2_image,components[i])* |
| jas_image_cmpthstep(jp2_image,components[i])); |
| height=(unsigned long) (jas_image_cmptheight(jp2_image,components[i])* |
| jas_image_cmptvstep(jp2_image,components[i])); |
| x_step[i]=(unsigned int) jas_image_cmpthstep(jp2_image,components[i]); |
| y_step[i]=(unsigned int) jas_image_cmptvstep(jp2_image,components[i]); |
| if ((width != image->columns) || (height != image->rows) || |
| (jas_image_cmpttlx(jp2_image,components[i]) != 0) || |
| (jas_image_cmpttly(jp2_image,components[i]) != 0) || |
| (x_step[i] != 1) || (y_step[i] != 1) || |
| (jas_image_cmptsgnd(jp2_image,components[i]) != MagickFalse)) |
| { |
| (void) jas_stream_close(jp2_stream); |
| jas_image_destroy(jp2_image); |
| ThrowReaderException(CoderError,"IrregularChannelGeometryNotSupported"); |
| } |
| } |
| /* |
| Convert JPEG 2000 pixels. |
| */ |
| image->matte=number_components > 3 ? MagickTrue : MagickFalse; |
| maximum_component_depth=0; |
| for (i=0; i < (long) number_components; i++) |
| { |
| maximum_component_depth=(unsigned int) MagickMax((size_t) |
| jas_image_cmptprec(jp2_image,components[i]),(size_t) |
| maximum_component_depth); |
| pixels[i]=jas_matrix_create(1,(int) (image->columns/x_step[i])); |
| if (pixels[i] == (jas_matrix_t *) NULL) |
| { |
| for (--i; i >= 0; i--) |
| jas_matrix_destroy(pixels[i]); |
| jas_image_destroy(jp2_image); |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| } |
| image->depth=maximum_component_depth; |
| if (image_info->ping != MagickFalse) |
| { |
| (void) jas_stream_close(jp2_stream); |
| jas_image_destroy(jp2_image); |
| return(GetFirstImageInList(image)); |
| } |
| for (i=0; i < (long) number_components; i++) |
| range[i]=GetQuantumRange((unsigned long) jas_image_cmptprec(jp2_image, |
| components[i])); |
| for (y=0; y < (long) image->rows; y++) |
| { |
| q=GetAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (PixelPacket *) NULL) |
| break; |
| for (i=0; i < (long) number_components; i++) |
| (void) jas_image_readcmpt(jp2_image,(short) components[i],0, |
| ((unsigned int) y)/y_step[i],((unsigned int) image->columns)/x_step[i], |
| 1,pixels[i]); |
| switch (number_components) |
| { |
| case 1: |
| { |
| /* |
| Grayscale. |
| */ |
| for (x=0; x < (long) image->columns; x++) |
| { |
| pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]); |
| q->red=(Quantum) ScaleAnyToQuantum((QuantumAny) pixel,range[0]); |
| q->green=q->red; |
| q->blue=q->red; |
| q++; |
| } |
| break; |
| } |
| case 3: |
| { |
| /* |
| RGB. |
| */ |
| for (x=0; x < (long) image->columns; x++) |
| { |
| pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]); |
| q->red=(Quantum) ScaleAnyToQuantum((QuantumAny) pixel,range[0]); |
| pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]); |
| q->green=(Quantum) ScaleAnyToQuantum((QuantumAny) pixel,range[1]); |
| pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]); |
| q->blue=(Quantum) ScaleAnyToQuantum((QuantumAny) pixel,range[2]); |
| q++; |
| } |
| break; |
| } |
| case 4: |
| { |
| /* |
| RGBA. |
| */ |
| for (x=0; x < (long) image->columns; x++) |
| { |
| pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]); |
| q->red=(Quantum) ScaleAnyToQuantum((QuantumAny) pixel,range[0]); |
| pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]); |
| q->green=(Quantum) ScaleAnyToQuantum((QuantumAny) pixel,range[1]); |
| pixel=(QuantumAny) jas_matrix_getv(pixels[2],x/x_step[2]); |
| q->blue=(Quantum) ScaleAnyToQuantum((QuantumAny) pixel,range[2]); |
| pixel=(QuantumAny) jas_matrix_getv(pixels[3],x/x_step[3]); |
| q->opacity=(Quantum) (QuantumRange- |
| ScaleAnyToQuantum((QuantumAny) pixel,range[3])); |
| q++; |
| } |
| break; |
| } |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| status=SetImageProgress(image,LoadImageTag,y,image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| cm_profile=jas_image_cmprof(jp2_image); |
| icc_profile=(jas_iccprof_t *) NULL; |
| if (cm_profile != (jas_cmprof_t *) NULL) |
| icc_profile=jas_iccprof_createfromcmprof(cm_profile); |
| if (icc_profile != (jas_iccprof_t *) NULL) |
| { |
| jas_stream_t |
| *icc_stream; |
| |
| icc_stream=jas_stream_memopen(NULL,0); |
| if ((icc_stream != (jas_stream_t *) NULL) && |
| (jas_iccprof_save(icc_profile,icc_stream) == 0) && |
| (jas_stream_flush(icc_stream) == 0)) |
| { |
| StringInfo |
| *icc_profile, |
| *profile; |
| |
| jas_stream_memobj_t |
| *blob; |
| |
| /* |
| Extract the icc profile, handle errors without much noise. |
| */ |
| blob=(jas_stream_memobj_t *) icc_stream->obj_; |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(CoderEvent,GetMagickModule(), |
| "Profile: ICC, %lu bytes",(unsigned long) blob->len_); |
| profile=AcquireStringInfo(blob->len_); |
| SetStringInfoDatum(profile,blob->buf_); |
| icc_profile=(StringInfo *) GetImageProfile(image,"icc"); |
| if (icc_profile == (StringInfo *) NULL) |
| (void) SetImageProfile(image,"icc",profile); |
| else |
| (void) ConcatenateStringInfo(icc_profile,profile); |
| profile=DestroyStringInfo(profile); |
| (void) jas_stream_close(icc_stream); |
| } |
| } |
| (void) jas_stream_close(jp2_stream); |
| jas_image_destroy(jp2_image); |
| for (i=0; i < (long) number_components; i++) |
| jas_matrix_destroy(pixels[i]); |
| 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: |
| % |
| % unsigned long RegisterJP2Image(void) |
| % |
| */ |
| ModuleExport unsigned long RegisterJP2Image(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=SetMagickInfo("JP2"); |
| entry->description=ConstantString("JPEG-2000 File Format Syntax"); |
| entry->module=ConstantString("JP2"); |
| entry->magick=(IsImageFormatHandler *) IsJP2; |
| entry->adjoin=MagickFalse; |
| entry->seekable_stream=MagickTrue; |
| entry->thread_support=NoThreadSupport; |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| entry->decoder=(DecodeImageHandler *) ReadJP2Image; |
| entry->encoder=(EncodeImageHandler *) WriteJP2Image; |
| #endif |
| (void) RegisterMagickInfo(entry); |
| entry=SetMagickInfo("JPC"); |
| entry->description=ConstantString("JPEG-2000 Code Stream Syntax"); |
| entry->module=ConstantString("JPC"); |
| entry->magick=(IsImageFormatHandler *) IsJPC; |
| entry->adjoin=MagickFalse; |
| entry->seekable_stream=MagickTrue; |
| entry->thread_support=NoThreadSupport; |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| entry->decoder=(DecodeImageHandler *) ReadJP2Image; |
| entry->encoder=(EncodeImageHandler *) WriteJP2Image; |
| #endif |
| (void) RegisterMagickInfo(entry); |
| entry=SetMagickInfo("JPX"); |
| entry->description=ConstantString("JPEG-2000 File Format Syntax"); |
| entry->module=ConstantString("JPX"); |
| entry->magick=(IsImageFormatHandler *) IsJPC; |
| entry->adjoin=MagickFalse; |
| entry->seekable_stream=MagickTrue; |
| entry->thread_support=NoThreadSupport; |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| entry->decoder=(DecodeImageHandler *) ReadJP2Image; |
| entry->encoder=(EncodeImageHandler *) WriteJP2Image; |
| #endif |
| (void) RegisterMagickInfo(entry); |
| entry=SetMagickInfo("PGX"); |
| entry->description=ConstantString("JPEG-2000 VM Format"); |
| entry->module=ConstantString("PGX"); |
| entry->magick=(IsImageFormatHandler *) IsJPC; |
| entry->adjoin=MagickFalse; |
| entry->seekable_stream=MagickTrue; |
| entry->thread_support=NoThreadSupport; |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| entry->decoder=(DecodeImageHandler *) ReadJP2Image; |
| #endif |
| (void) RegisterMagickInfo(entry); |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| jas_init(); |
| #endif |
| 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("JP2"); |
| (void) UnregisterMagickInfo("JPC"); |
| (void) UnregisterMagickInfo("PGX"); |
| #if defined(MAGICKCORE_JP2_DELEGATE) |
| jas_cleanup(); |
| #endif |
| } |
| |
| #if defined(MAGICKCORE_JP2_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) |
| % |
| % A description of each parameter follows. |
| % |
| % o image_info: the image info. |
| % |
| % o image: The image. |
| % |
| */ |
| static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image) |
| { |
| char |
| *key, |
| magick[MaxTextExtent], |
| *options; |
| |
| const char |
| *option; |
| |
| long |
| format, |
| y; |
| |
| jas_image_cmptparm_t |
| component_info[4]; |
| |
| jas_image_t |
| *jp2_image; |
| |
| jas_matrix_t |
| *pixels[4]; |
| |
| jas_stream_t |
| *jp2_stream; |
| |
| MagickBooleanType |
| status; |
| |
| QuantumAny |
| range; |
| |
| register const PixelPacket |
| *p; |
| |
| register long |
| i, |
| x; |
| |
| unsigned long |
| number_components; |
| |
| /* |
| Open 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); |
| /* |
| Intialize JPEG 2000 API. |
| */ |
| if (image->colorspace != RGBColorspace) |
| (void) TransformImageColorspace(image,RGBColorspace); |
| jp2_stream=JP2StreamManager(image); |
| if (jp2_stream == (jas_stream_t *) NULL) |
| ThrowWriterException(DelegateError,"UnableToManageJP2Stream"); |
| number_components=image->matte ? 4UL : 3UL; |
| if ((image_info->type != TrueColorType) && |
| IsGrayImage(image,&image->exception)) |
| number_components=1; |
| if ((image->columns != (unsigned int) image->columns) || |
| (image->rows != (unsigned int) image->rows)) |
| ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit"); |
| (void) ResetMagickMemory(&component_info,0,sizeof(component_info)); |
| for (i=0; i < (long) number_components; i++) |
| { |
| component_info[i].tlx=0; |
| component_info[i].tly=0; |
| component_info[i].hstep=1; |
| component_info[i].vstep=1; |
| component_info[i].width=(unsigned int) image->columns; |
| component_info[i].height=(unsigned int) image->rows; |
| component_info[i].prec=(int) MagickMax(MagickMin(image->depth,16),2); |
| component_info[i].sgnd=MagickFalse; |
| } |
| jp2_image=jas_image_create((int) number_components,component_info, |
| JAS_CLRSPC_UNKNOWN); |
| if (jp2_image == (jas_image_t *) NULL) |
| ThrowWriterException(DelegateError,"UnableToCreateImage"); |
| if (number_components == 1) |
| { |
| /* |
| sRGB Grayscale. |
| */ |
| jas_image_setclrspc(jp2_image,JAS_CLRSPC_SGRAY); |
| jas_image_setcmpttype(jp2_image,0, |
| JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y)); |
| } |
| else |
| { |
| /* |
| sRGB. |
| */ |
| jas_image_setclrspc(jp2_image,JAS_CLRSPC_SRGB); |
| jas_image_setcmpttype(jp2_image,0, |
| (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R)); |
| jas_image_setcmpttype(jp2_image,1, |
| (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G)); |
| jas_image_setcmpttype(jp2_image,2, |
| (jas_image_cmpttype_t) JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B)); |
| if (number_components == 4) |
| jas_image_setcmpttype(jp2_image,3,JAS_IMAGE_CT_OPACITY); |
| } |
| /* |
| Convert to JPEG 2000 pixels. |
| */ |
| for (i=0; i < (long) number_components; i++) |
| { |
| pixels[i]=jas_matrix_create(1,(int) image->columns); |
| if (pixels[i] == (jas_matrix_t *) NULL) |
| { |
| for (x=0; x < i; x++) |
| jas_matrix_destroy(pixels[x]); |
| jas_image_destroy(jp2_image); |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| } |
| range=GetQuantumRange((unsigned long) component_info[0].prec); |
| for (y=0; y < (long) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| if (p == (const PixelPacket *) NULL) |
| break; |
| for (x=0; x < (long) image->columns; x++) |
| { |
| if (number_components == 1) |
| jas_matrix_setv(pixels[0],x,(jas_seqent_t) ScaleQuantumToAny( |
| PixelIntensityToQuantum(p),range)); |
| else |
| { |
| jas_matrix_setv(pixels[0],x,(jas_seqent_t) |
| ScaleQuantumToAny(p->red,range)); |
| jas_matrix_setv(pixels[1],x,(jas_seqent_t) |
| ScaleQuantumToAny(p->green,range)); |
| jas_matrix_setv(pixels[2],x,(jas_seqent_t) |
| ScaleQuantumToAny(p->blue,range)); |
| if (number_components > 3) |
| jas_matrix_setv(pixels[3],x,(jas_seqent_t) |
| ScaleQuantumToAny((Quantum) (QuantumRange-p->opacity),range)); |
| } |
| p++; |
| } |
| for (i=0; i < (long) number_components; i++) |
| (void) jas_image_writecmpt(jp2_image,(short) i,0,(unsigned int) y, |
| (unsigned int) image->columns,1,pixels[i]); |
| status=SetImageProgress(image,SaveImageTag,y,image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) CopyMagickString(magick,image_info->magick,MaxTextExtent); |
| LocaleLower(magick); |
| format=jas_image_strtofmt(magick); |
| options=(char *) NULL; |
| ResetImageOptionIterator(image_info); |
| key=GetNextImageOption(image_info); |
| for ( ; key != (char *) NULL; key=GetNextImageOption(image_info)) |
| { |
| option=GetImageOption(image_info,key); |
| if (option == (const char *) NULL) |
| continue; |
| if (LocaleNCompare(key,"jp2:",4) == 0) |
| { |
| (void) ConcatenateString(&options,key+4); |
| if (*option != '\0') |
| { |
| (void) ConcatenateString(&options,"="); |
| (void) ConcatenateString(&options,option); |
| } |
| (void) ConcatenateString(&options," "); |
| } |
| } |
| option=GetImageOption(image_info,"jp2:rate"); |
| if ((option == (const char *) NULL) && |
| (image_info->compression != LosslessJPEGCompression) && |
| (image->quality != UndefinedCompressionQuality) && |
| ((double) image->quality <= 99.5) && |
| ((image->rows*image->columns) > 2500)) |
| { |
| char |
| option[MaxTextExtent]; |
| |
| double |
| alpha, |
| header_size, |
| number_pixels, |
| rate, |
| target_size; |
| |
| alpha=115.0-image->quality; |
| rate=100.0/(alpha*alpha); |
| header_size=550.0; |
| header_size+=(number_components-1)*142; |
| number_pixels=(double) image->rows*image->columns*number_components* |
| (GetImageQuantumDepth(image,MagickTrue)/8); |
| target_size=(number_pixels*rate)+header_size; |
| rate=target_size/number_pixels; |
| (void) FormatMagickString(option,MaxTextExtent,"rate=%g",rate); |
| (void) ConcatenateString(&options,option); |
| } |
| status=jas_image_encode(jp2_image,jp2_stream,format,options) != 0 ? |
| MagickTrue : MagickFalse; |
| (void) jas_stream_close(jp2_stream); |
| for (i=0; i < (long) number_components; i++) |
| jas_matrix_destroy(pixels[i]); |
| jas_image_destroy(jp2_image); |
| if (status != MagickFalse) |
| ThrowWriterException(DelegateError,"UnableToEncodeImageFile"); |
| return(MagickTrue); |
| } |
| #endif |