| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % JJJ N N X X % |
| % J NN N X X % |
| % J N N N X % |
| % J J N NN X X % |
| % JJ N N X X % |
| % % |
| % % |
| % Read/Write Garmin Image Format % |
| % % |
| % Cristy % |
| % July 2012 % |
| % % |
| % % |
| % Copyright 1999-2016 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 declarations. |
| */ |
| #include "MagickCore/studio.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/draw.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/module.h" |
| #include "MagickCore/monitor.h" |
| #include "MagickCore/monitor-private.h" |
| #include "MagickCore/property.h" |
| #include "MagickCore/pixel-accessor.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| |
| typedef struct _JNXInfo |
| { |
| int |
| version, |
| serial; |
| |
| PointInfo |
| northeast, |
| southwest; |
| |
| int |
| levels, |
| expire, |
| id, |
| crc, |
| signature; |
| |
| unsigned int |
| offset; |
| |
| int |
| order; |
| } JNXInfo; |
| |
| typedef struct _JNXLevelInfo |
| { |
| int |
| count, |
| offset; |
| |
| unsigned int |
| scale; |
| |
| unsigned short |
| copyright[MagickPathExtent]; |
| } JNXLevelInfo; |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d J N X I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadJNXImage() reads an image in the Garmin tile storage format 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 ReadJNXImage method is: |
| % |
| % Image *ReadJNXImage(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 *ReadJNXImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| #define JNXMaxLevels 20 |
| |
| Image |
| *image, |
| *images; |
| |
| JNXInfo |
| jnx_info; |
| |
| JNXLevelInfo |
| jnx_level_info[JNXMaxLevels]; |
| |
| MagickBooleanType |
| status; |
| |
| register ssize_t |
| i; |
| |
| /* |
| 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); |
| } |
| /* |
| Read JNX header. |
| */ |
| (void) ResetMagickMemory(&jnx_info,0,sizeof(jnx_info)); |
| jnx_info.version=ReadBlobLSBSignedLong(image); |
| if ((jnx_info.version != 3) && (jnx_info.version != 4)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| jnx_info.serial=ReadBlobLSBSignedLong(image); |
| jnx_info.northeast.x=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| jnx_info.northeast.y=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| jnx_info.southwest.x=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| jnx_info.southwest.y=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| jnx_info.levels=ReadBlobLSBSignedLong(image); |
| if (jnx_info.levels > JNXMaxLevels) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| jnx_info.expire=ReadBlobLSBSignedLong(image); |
| jnx_info.id=ReadBlobLSBSignedLong(image); |
| jnx_info.crc=ReadBlobLSBSignedLong(image); |
| jnx_info.signature=ReadBlobLSBSignedLong(image); |
| jnx_info.offset=ReadBlobLSBLong(image); |
| if (jnx_info.version > 3) |
| jnx_info.order=ReadBlobLSBSignedLong(image); |
| else |
| if (jnx_info.version == 3) |
| jnx_info.order=30; |
| /* |
| Read JNX levels. |
| */ |
| (void) ResetMagickMemory(&jnx_level_info,0,sizeof(jnx_level_info)); |
| for (i=0; i < (ssize_t) jnx_info.levels; i++) |
| { |
| jnx_level_info[i].count=ReadBlobLSBSignedLong(image); |
| if (jnx_level_info[i].count > 50000) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| jnx_level_info[i].offset=ReadBlobLSBSignedLong(image); |
| jnx_level_info[i].scale=ReadBlobLSBLong(image); |
| if (jnx_info.version > 3) |
| { |
| register ssize_t |
| j; |
| |
| unsigned short |
| c; |
| |
| (void) ReadBlobLSBLong(image); |
| j=0; |
| while ((c=ReadBlobLSBShort(image)) != 0) |
| if (j < (MagickPathExtent-1)) |
| jnx_level_info[i].copyright[j++]=c; |
| jnx_level_info[i].copyright[j]=0; |
| } |
| } |
| /* |
| Read JNX tiles. |
| */ |
| images=NewImageList(); |
| for (i=0; i < (ssize_t) jnx_info.levels; i++) |
| { |
| MagickOffsetType |
| offset; |
| |
| register ssize_t |
| j; |
| |
| offset=SeekBlob(image,(MagickOffsetType) jnx_level_info[i].offset,SEEK_SET); |
| if (offset != (MagickOffsetType) jnx_level_info[i].offset) |
| continue; |
| for (j=0; j < (ssize_t) jnx_level_info[i].count; j++) |
| { |
| Image |
| *tile_image; |
| |
| ImageInfo |
| *read_info; |
| |
| int |
| tile_offset; |
| |
| MagickOffsetType |
| restore_offset; |
| |
| PointInfo |
| northeast, |
| southwest; |
| |
| ssize_t |
| count; |
| |
| unsigned char |
| *blob; |
| |
| unsigned int |
| tile_length; |
| |
| northeast.x=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| northeast.y=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| southwest.x=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| southwest.y=180.0*ReadBlobLSBSignedLong(image)/0x7fffffff; |
| (void) ReadBlobLSBShort(image); /* width */ |
| (void) ReadBlobLSBShort(image); /* height */ |
| tile_length=ReadBlobLSBLong(image); |
| tile_offset=ReadBlobLSBSignedLong(image); |
| if (tile_offset == -1) |
| continue; |
| restore_offset=TellBlob(image); |
| if (restore_offset < 0) |
| continue; |
| offset=SeekBlob(image,(MagickOffsetType) tile_offset,SEEK_SET); |
| if (offset != (MagickOffsetType) tile_offset) |
| continue; |
| /* |
| Read a tile. |
| */ |
| blob=(unsigned char *) AcquireQuantumMemory((size_t) tile_length+2, |
| sizeof(*blob)); |
| if (blob == (unsigned char *) NULL) |
| { |
| if (images != (Image *) NULL) |
| images=DestroyImageList(images); |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| blob[0]=0xFF; |
| blob[1]=0xD8; |
| count=ReadBlob(image,tile_length,blob+2); |
| if (count != (ssize_t) tile_length) |
| { |
| if (images != (Image *) NULL) |
| images=DestroyImageList(images); |
| blob=(unsigned char *) RelinquishMagickMemory(blob); |
| ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile"); |
| } |
| read_info=CloneImageInfo(image_info); |
| (void) CopyMagickString(read_info->magick,"JPEG",MagickPathExtent); |
| tile_image=BlobToImage(read_info,blob,tile_length+2,exception); |
| read_info=DestroyImageInfo(read_info); |
| blob=(unsigned char *) RelinquishMagickMemory(blob); |
| offset=SeekBlob(image,restore_offset,SEEK_SET); |
| if (tile_image == (Image *) NULL) |
| continue; |
| (void) CopyMagickString(tile_image->magick,image->magick,MagickPathExtent); |
| (void) FormatImageProperty(tile_image,"jnx:northeast","%.20g,%.20g", |
| northeast.x,northeast.y); |
| (void) FormatImageProperty(tile_image,"jnx:southwest","%.20g,%.20g", |
| southwest.x,southwest.y); |
| AppendImageToList(&images,tile_image); |
| } |
| if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| proceed=SetImageProgress(image,LoadImageTag,(MagickOffsetType) i, |
| (MagickSizeType) jnx_info.levels); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| (void) CloseBlob(image); |
| image=DestroyImage(image); |
| if (images == (Image *) NULL) |
| return((Image *) NULL); |
| return(GetFirstImageInList(images)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r J N X I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterJNXImage() adds attributes for the JNX 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 RegisterJNXImage method is: |
| % |
| % size_t RegisterJNXImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterJNXImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("JNX","JNX","Garmin tile format"); |
| entry->decoder=(DecodeImageHandler *) ReadJNXImage; |
| entry->flags|=CoderSeekableStreamFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r J N X I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterJNXImage() removes format registrations made by the |
| % JNX module from the list of supported formats. |
| % |
| % The format of the UnregisterJNXImage method is: |
| % |
| % UnregisterJNXImage(void) |
| % |
| */ |
| ModuleExport void UnregisterJNXImage(void) |
| { |
| (void) UnregisterMagickInfo("JNX"); |
| } |
