Add framework to support the Cube LUT image format
diff --git a/coders/Makefile.am b/coders/Makefile.am
index 116c661..d34e653 100644
--- a/coders/Makefile.am
+++ b/coders/Makefile.am
@@ -109,6 +109,7 @@
coders/cip.c \
coders/clip.c \
coders/cmyk.c \
+ coders/cube.c \
coders/cut.c \
coders/dcm.c \
coders/dds.c \
@@ -241,6 +242,7 @@
coders/coders.h \
coders/coders-list.h \
coders/coders-private.h \
+ coders/cube.h \
coders/cut.h \
coders/dcm.h \
coders/dds.h \
@@ -372,6 +374,7 @@
coders/cip.la \
coders/clip.la \
coders/cmyk.la \
+ coders/cube.la \
coders/cut.la \
coders/dcm.la \
coders/dds.la \
@@ -566,6 +569,12 @@
coders_cmyk_la_LDFLAGS = $(MODULECOMMONFLAGS)
coders_cmyk_la_LIBADD = $(MAGICKCORE_LIBS)
+# CUBE coder module
+coders_cube_la_SOURCES = coders/cube.c
+coders_cube_la_CPPFLAGS = $(MAGICK_CODER_CPPFLAGS)
+coders_cube_la_LDFLAGS = $(MODULECOMMONFLAGS)
+coders_cube_la_LIBADD = $(MAGICKCORE_LIBS) $(GOMP_LIBS)
+
# CUT coder module
coders_cut_la_SOURCES = coders/cut.c
coders_cut_la_CPPFLAGS = $(MAGICK_CODER_CPPFLAGS)
diff --git a/coders/coders.h b/coders/coders.h
index 5345f5d..65bcec4 100644
--- a/coders/coders.h
+++ b/coders/coders.h
@@ -34,6 +34,7 @@
#endif
#include "coders/clip.h"
#include "coders/cmyk.h"
+#include "coders/cube.h"
#include "coders/cut.h"
#include "coders/dcm.h"
#include "coders/dds.h"
diff --git a/coders/cube.c b/coders/cube.c
new file mode 100644
index 0000000..e84f9c8
--- /dev/null
+++ b/coders/cube.c
@@ -0,0 +1,277 @@
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% CCCC U U BBBB EEEEE %
+% C U U B B E %
+% C U U BBBB EEE %
+% C U U B B E %
+% CCCC UUU BBBB EEEEE %
+% %
+% %
+% Cube LUT Image Format %
+% %
+% Software Design %
+% Cristy %
+% July 2018 %
+% %
+% %
+% Copyright 1999-2018 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 %
+% %
+% https://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/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/pixel-accessor.h"
+#include "MagickCore/quantum-private.h"
+#include "MagickCore/resource_.h"
+#include "MagickCore/static.h"
+#include "MagickCore/string_.h"
+#include "MagickCore/string-private.h"
+#include "MagickCore/thread-private.h"
+^L
+/*
+ Forward declarations.
+*/
+static MagickBooleanType
+ WriteCUBEImage(const ImageInfo *,Image *,ExceptionInfo *);
+
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% R e a d H A L D I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% ReadCUBEImage() creates a Cube color lookup table image 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 ReadCUBEImage method is:
+%
+% Image *ReadCUBEImage(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 *ReadCUBEImage(const ImageInfo *image_info,
+ ExceptionInfo *exception)
+{
+ Image
+ *image;
+
+ MagickBooleanType
+ status;
+
+ size_t
+ cube_size,
+ level;
+
+ ssize_t
+ y;
+
+ /*
+ Create CUBE color lookup table image.
+ */
+ 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);
+ level=0;
+ if (*image_info->filename != '\0')
+ level=StringToUnsignedLong(image_info->filename);
+ if (level < 2)
+ level=8;
+ status=MagickTrue;
+ cube_size=level*level;
+ image->columns=(size_t) (level*cube_size);
+ image->rows=(size_t) (level*cube_size);
+ status=SetImageExtent(image,image->columns,image->rows,exception);
+ if (status == MagickFalse)
+ return(DestroyImageList(image));
+ for (y=0; y < (ssize_t) image->rows; y+=(ssize_t) level)
+ {
+ ssize_t
+ blue,
+ green,
+ red;
+
+ register Quantum
+ *magick_restrict q;
+
+ if (status == MagickFalse)
+ continue;
+ q=QueueAuthenticPixels(image,0,y,image->columns,(size_t) level,exception);
+ if (q == (Quantum *) NULL)
+ {
+ status=MagickFalse;
+ continue;
+ }
+ blue=y/(ssize_t) level;
+ for (green=0; green < (ssize_t) cube_size; green++)
+ {
+ for (red=0; red < (ssize_t) cube_size; red++)
+ {
+ SetPixelRed(image,ClampToQuantum(QuantumRange*red/(cube_size-1.0)),q);
+ SetPixelGreen(image,ClampToQuantum(QuantumRange*green/(cube_size-1.0)),
+ q);
+ SetPixelBlue(image,ClampToQuantum(QuantumRange*blue/(cube_size-1.0)),q);
+ SetPixelAlpha(image,OpaqueAlpha,q);
+ q+=GetPixelChannels(image);
+ }
+ }
+ if (SyncAuthenticPixels(image,exception) == MagickFalse)
+ status=MagickFalse;
+ }
+ return(GetFirstImageInList(image));
+}
+
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% R e g i s t e r H A L D I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% RegisterCUBEImage() adds attributes for the Hald color lookup table 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 RegisterCUBEImage method is:
+%
+% size_t RegisterCUBEImage(void)
+%
+*/
+ModuleExport size_t RegisterCUBEImage(void)
+{
+ MagickInfo
+ *entry;
+
+ entry=AcquireMagickInfo("CUBE","CUBE",
+ "Identity Cube color lookup table image");
+ entry->decoder=(DecodeImageHandler *) ReadCUBEImage;
+ entry->encoder=(EncodeImageHandler *) WriteCUBEImage;
+ entry->flags^=CoderAdjoinFlag;
+ entry->format_type=ImplicitFormatType;
+ entry->flags|=CoderRawSupportFlag;
+ entry->flags|=CoderEndianSupportFlag;
+ (void) RegisterMagickInfo(entry);
+ return(MagickImageCoderSignature);
+}
+
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% U n r e g i s t e r H A L D I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% UnregisterCUBEImage() removes format registrations made by the
+% CUBE module from the list of supported formats.
+%
+% The format of the UnregisterCUBEImage method is:
+%
+% UnregisterCUBEImage(void)
+%
+*/
+ModuleExport void UnregisterCUBEImage(void)
+{
+ (void) UnregisterMagickInfo("CUBE");
+}
+
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% W r i t e C U B E I m a g e %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% WriteCUBEImage an image in the Cube coloe lookup table image format.
+%
+% The format of the WriteCUBEImage method is:
+%
+% MagickBooleanType WriteCUBEImage(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 WriteCUBEImage(const ImageInfo *image_info,
+ Image *image,ExceptionInfo *exception)
+{
+ assert(image_info != (const ImageInfo *) NULL);
+ assert(image_info->signature == MagickCoreSignature);
+ assert(image != (Image *) NULL);
+ assert(image->signature == MagickCoreSignature);
+ assert(exception != (ExceptionInfo *) NULL);
+ (void) exception;
+ if (image->debug != MagickFalse)
+ (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
+ return(MagickTrue);
+}
diff --git a/coders/cube.h b/coders/cube.h
new file mode 100644
index 0000000..c865fe9
--- /dev/null
+++ b/coders/cube.h
@@ -0,0 +1,31 @@
+/*
+ Copyright 1999-2018 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.
+ obtain a copy of the License at
+
+ https://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 "coders/coders-private.h"
+
+#define MagickCUBEHeaders
+
+#define MagickCUBEAliases
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+MagickCoderExports(CUBE)
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif