2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
10 % H H A A LLLLL DDDD %
13 % Create Identity Hald CLUT Image Format %
20 % Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
42 #include "MagickCore/studio.h"
43 #include "MagickCore/blob.h"
44 #include "MagickCore/blob-private.h"
45 #include "MagickCore/cache.h"
46 #include "MagickCore/colorspace.h"
47 #include "MagickCore/exception.h"
48 #include "MagickCore/exception-private.h"
49 #include "MagickCore/image.h"
50 #include "MagickCore/image-private.h"
51 #include "MagickCore/list.h"
52 #include "MagickCore/magick.h"
53 #include "MagickCore/memory_.h"
54 #include "MagickCore/module.h"
55 #include "MagickCore/monitor.h"
56 #include "MagickCore/monitor-private.h"
57 #include "MagickCore/pixel-accessor.h"
58 #include "MagickCore/quantum-private.h"
59 #include "MagickCore/static.h"
60 #include "MagickCore/string_.h"
61 #include "MagickCore/string-private.h"
64 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
68 % R e a d H A L D I m a g e %
72 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
74 % ReadHALDImage() creates a Hald color lookup table image and returns it. It
75 % allocates the memory necessary for the new Image structure and returns a
76 % pointer to the new image.
78 % The format of the ReadHALDImage method is:
80 % Image *ReadHALDImage(const ImageInfo *image_info,
81 % ExceptionInfo *exception)
83 % A description of each parameter follows:
85 % o image_info: the image info.
87 % o exception: return any errors or warnings in this structure.
90 static Image *ReadHALDImage(const ImageInfo *image_info,
91 ExceptionInfo *exception)
107 Create HALD color lookup table image.
109 assert(image_info != (const ImageInfo *) NULL);
110 assert(image_info->signature == MagickSignature);
111 if (image_info->debug != MagickFalse)
112 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
113 image_info->filename);
114 assert(exception != (ExceptionInfo *) NULL);
115 assert(exception->signature == MagickSignature);
116 image=AcquireImage(image_info);
118 if (*image_info->filename != '\0')
119 level=StringToUnsignedLong(image_info->filename);
123 cube_size=level*level;
124 image->columns=(size_t) (level*cube_size);
125 image->rows=(size_t) (level*cube_size);
126 for (y=0; y < (ssize_t) image->rows; y+=(ssize_t) level)
136 if (status == MagickFalse)
138 q=QueueAuthenticPixels(image,0,y,image->columns,(size_t) level,
140 if (q == (const Quantum *) NULL)
145 blue=y/(ssize_t) level;
146 for (green=0; green < (ssize_t) cube_size; green++)
148 for (red=0; red < (ssize_t) cube_size; red++)
150 SetPixelRed(image,ClampToQuantum(QuantumRange*red/(cube_size-1.0)),q);
151 SetPixelGreen(image,ClampToQuantum(QuantumRange*green/
153 SetPixelBlue(image,ClampToQuantum(QuantumRange*blue/(cube_size-1.0)),q);
154 SetPixelAlpha(image,OpaqueAlpha,q);
155 q+=GetPixelChannels(image);
158 if (SyncAuthenticPixels(image,exception) == MagickFalse)
161 return(GetFirstImageInList(image));
165 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
169 % R e g i s t e r H A L D I m a g e %
173 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
175 % RegisterHALDImage() adds attributes for the Hald color lookup table image
176 % format to the list of supported formats. The attributes include the image
177 % format tag, a method to read and/or write the format, whether the format
178 % supports the saving of more than one frame to the same file or blob, whether
179 % the format supports native in-memory I/O, and a brief description of the
182 % The format of the RegisterHALDImage method is:
184 % size_t RegisterHALDImage(void)
187 ModuleExport size_t RegisterHALDImage(void)
192 entry=SetMagickInfo("HALD");
193 entry->decoder=(DecodeImageHandler *) ReadHALDImage;
194 entry->adjoin=MagickFalse;
195 entry->format_type=ImplicitFormatType;
196 entry->raw=MagickTrue;
197 entry->endian_support=MagickTrue;
198 entry->description=ConstantString("Identity Hald color lookup table image");
199 (void) RegisterMagickInfo(entry);
200 return(MagickImageCoderSignature);
204 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
208 % U n r e g i s t e r H A L D I m a g e %
212 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
214 % UnregisterHALDImage() removes format registrations made by the
215 % HALD module from the list of supported formats.
217 % The format of the UnregisterHALDImage method is:
219 % UnregisterHALDImage(void)
222 ModuleExport void UnregisterHALDImage(void)
224 (void) UnregisterMagickInfo("HALD");