2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
10 % H H A A LLLLL DDDD %
13 % Create Identity Hald CLUT Image Format %
20 % Copyright 1999-2012 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,exception);
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 #if defined(MAGICKCORE_OPENMP_SUPPORT)
127 #pragma omp parallel for schedule(static,8) shared(status)
129 for (y=0; y < (ssize_t) image->rows; y+=(ssize_t) level)
139 if (status == MagickFalse)
141 q=QueueAuthenticPixels(image,0,y,image->columns,(size_t) level,
143 if (q == (Quantum *) NULL)
148 blue=y/(ssize_t) level;
149 for (green=0; green < (ssize_t) cube_size; green++)
151 for (red=0; red < (ssize_t) cube_size; red++)
153 SetPixelRed(image,ClampToQuantum(QuantumRange*red/(cube_size-1.0)),q);
154 SetPixelGreen(image,ClampToQuantum(QuantumRange*green/(cube_size-1.0)),
156 SetPixelBlue(image,ClampToQuantum(QuantumRange*blue/(cube_size-1.0)),q);
157 SetPixelAlpha(image,OpaqueAlpha,q);
158 q+=GetPixelChannels(image);
161 if (SyncAuthenticPixels(image,exception) == MagickFalse)
164 return(GetFirstImageInList(image));
168 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
172 % R e g i s t e r H A L D I m a g e %
176 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
178 % RegisterHALDImage() adds attributes for the Hald color lookup table image
179 % format to the list of supported formats. The attributes include the image
180 % format tag, a method to read and/or write the format, whether the format
181 % supports the saving of more than one frame to the same file or blob, whether
182 % the format supports native in-memory I/O, and a brief description of the
185 % The format of the RegisterHALDImage method is:
187 % size_t RegisterHALDImage(void)
190 ModuleExport size_t RegisterHALDImage(void)
195 entry=SetMagickInfo("HALD");
196 entry->decoder=(DecodeImageHandler *) ReadHALDImage;
197 entry->adjoin=MagickFalse;
198 entry->format_type=ImplicitFormatType;
199 entry->raw=MagickTrue;
200 entry->endian_support=MagickTrue;
201 entry->description=ConstantString("Identity Hald color lookup table image");
202 (void) RegisterMagickInfo(entry);
203 return(MagickImageCoderSignature);
207 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
211 % U n r e g i s t e r H A L D I m a g e %
215 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
217 % UnregisterHALDImage() removes format registrations made by the
218 % HALD module from the list of supported formats.
220 % The format of the UnregisterHALDImage method is:
222 % UnregisterHALDImage(void)
225 ModuleExport void UnregisterHALDImage(void)
227 (void) UnregisterMagickInfo("HALD");