| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % H H RRRR ZZZZZ % |
| % H H R R ZZ % |
| % HHHHH RRRR Z % |
| % H H R R ZZ % |
| % H H R R ZZZZZ % |
| % % |
| % % |
| % Read/Write Slow Scan TeleVision Image Format % |
| % % |
| % Software Design % |
| % John Cristy % |
| % July 1992 % |
| % % |
| % % |
| % Copyright 1999-2014 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 "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/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/pixel-accessor.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WriteHRZImage(const ImageInfo *,Image *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d H R Z I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadHRZImage() reads a Slow Scan TeleVision image file 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 ReadHRZImage method is: |
| % |
| % Image *ReadHRZImage(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 *ReadHRZImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| Image |
| *image; |
| |
| MagickBooleanType |
| status; |
| |
| register ssize_t |
| x; |
| |
| register Quantum |
| *q; |
| |
| register unsigned char |
| *p; |
| |
| ssize_t |
| count, |
| y; |
| |
| size_t |
| length; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| 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,exception); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| /* |
| Convert HRZ raster image to pixel packets. |
| */ |
| image->columns=256; |
| image->rows=240; |
| image->depth=8; |
| pixels=(unsigned char *) AcquireQuantumMemory(image->columns,3* |
| sizeof(*pixels)); |
| if (pixels == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| length=(size_t) (3*image->columns); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| count=ReadBlob(image,length,pixels); |
| if ((size_t) count != length) |
| ThrowReaderException(CorruptImageError,"UnableToReadImageData"); |
| p=pixels; |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelRed(image,ScaleCharToQuantum(4**p++),q); |
| SetPixelGreen(image,ScaleCharToQuantum(4**p++),q); |
| SetPixelBlue(image,ScaleCharToQuantum(4**p++),q); |
| SetPixelAlpha(image,OpaqueAlpha,q); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse) |
| break; |
| } |
| pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| if (EOFBlob(image) != MagickFalse) |
| ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| image->filename); |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r H R Z I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterHRZImage() adds attributes for the HRZ X 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 RegisterHRZImage method is: |
| % |
| % size_t RegisterHRZImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterHRZImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=SetMagickInfo("HRZ"); |
| entry->decoder=(DecodeImageHandler *) ReadHRZImage; |
| entry->encoder=(EncodeImageHandler *) WriteHRZImage; |
| entry->adjoin=MagickFalse; |
| entry->description=ConstantString("Slow Scan TeleVision"); |
| entry->module=ConstantString("HRZ"); |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r H R Z I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterHRZImage() removes format registrations made by the |
| % HRZ module from the list of supported formats. |
| % |
| % The format of the UnregisterHRZImage method is: |
| % |
| % UnregisterHRZImage(void) |
| % |
| */ |
| ModuleExport void UnregisterHRZImage(void) |
| { |
| (void) UnregisterMagickInfo("HRZ"); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % W r i t e H R Z I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % WriteHRZImage() writes an image to a file in HRZ X image format. |
| % |
| % The format of the WriteHRZImage method is: |
| % |
| % MagickBooleanType WriteHRZImage(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 WriteHRZImage(const ImageInfo *image_info,Image *image, |
| ExceptionInfo *exception) |
| { |
| Image |
| *hrz_image; |
| |
| MagickBooleanType |
| status; |
| |
| register const Quantum |
| *p; |
| |
| register ssize_t |
| x, |
| y; |
| |
| register unsigned char |
| *q; |
| |
| ssize_t |
| count; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| 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); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickSignature); |
| status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| hrz_image=ResizeImage(image,256,240,image->filter,exception); |
| if (hrz_image == (Image *) NULL) |
| return(MagickFalse); |
| if (IssRGBCompatibleColorspace(hrz_image->colorspace) == MagickFalse) |
| (void) TransformImageColorspace(hrz_image,sRGBColorspace,exception); |
| /* |
| Allocate memory for pixels. |
| */ |
| pixels=(unsigned char *) AcquireQuantumMemory((size_t) hrz_image->columns, |
| 3*sizeof(*pixels)); |
| if (pixels == (unsigned char *) NULL) |
| { |
| hrz_image=DestroyImage(hrz_image); |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| /* |
| Convert MIFF to HRZ raster pixels. |
| */ |
| for (y=0; y < (ssize_t) hrz_image->rows; y++) |
| { |
| p=GetVirtualPixels(hrz_image,0,y,hrz_image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| q=pixels; |
| for (x=0; x < (ssize_t) hrz_image->columns; x++) |
| { |
| *q++=ScaleQuantumToChar(GetPixelRed(hrz_image,p)/4); |
| *q++=ScaleQuantumToChar(GetPixelGreen(hrz_image,p)/4); |
| *q++=ScaleQuantumToChar(GetPixelBlue(hrz_image,p)/4); |
| p+=GetPixelChannels(hrz_image); |
| } |
| count=WriteBlob(image,(size_t) (q-pixels),pixels); |
| if (count != (ssize_t) (q-pixels)) |
| break; |
| status=SetImageProgress(image,SaveImageTag,y,hrz_image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| hrz_image=DestroyImage(hrz_image); |
| (void) CloseBlob(image); |
| return(MagickTrue); |
| } |