Color Management, Stage 1: Initial OpenColorIO library integration

This commit integrates support of OpenColorIO library into build systems.

It also contains C-API for OpenColorIO library which could be used by Blender.

CMake has got find rules familiar to OpenImageIO's one which makes it easier
for build system to find needed libraries and includes. Scons only could use
explicitly defined paths to libraries and includes.

C-API would be compiled and Blender would be linked against C-API and OpenColorIO
but it wouldn't affect on Blender behavior at all.

OpenColorIO could be disabled by setting up WITH_OCIO to Off in CMake and
setting WITH_BF_OCIO in Scons.

1 files changed, 128 insertions, 0 deletions

diff --git a/intern/opencolorio/ocio_capi.h b/intern/opencolorio/ocio_capi.h
new file mode 100644
index 00000000000..f0edd25ac14
--- /dev/null
+++ b/intern/opencolorio/ocio_capi.h
@@ -0,0 +1,128 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2012 Blender Foundation.
+ * All rights reserved.
+ *
+ * Contributor(s): Xavier Thomas
+ *                 Lukas Toene
+ *                 Sergey Sharybin
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __OCIO_CAPI_H__
+#define __OCIO_CAPI_H__
+
+
+
+#ifdef __cplusplus
+using namespace OCIO_NAMESPACE;
+extern "C" {
+#endif
+
+#define OCIO_DECLARE_HANDLE(name) typedef struct name##__ { int unused; } *name
+
+
+#ifndef OCIO_CAPI_IMPLEMENTATION
+	#define OCIO_ROLE_SCENE_LINEAR       "scene_linear"
+	#define OCIO_ROLE_COLOR_PICKING      "color_picking"
+	#define OCIO_ROLE_TEXTURE_PAINT      "texture_paint"
+	#define OCIO_ROLE_DEFAULT_BYTE       "default_byte"
+	#define OCIO_ROLE_DEFAULT_FLOAT      "default_float"
+	#define OCIO_ROLE_DEFAULT_SEQUENCER  "default_sequencer"
+
+	OCIO_DECLARE_HANDLE(ConstConfigRcPtr);
+	OCIO_DECLARE_HANDLE(ConstColorSpaceRcPtr);
+	OCIO_DECLARE_HANDLE(ConstProcessorRcPtr);
+	OCIO_DECLARE_HANDLE(ConstContextRcPtr);
+	OCIO_DECLARE_HANDLE(PackedImageDesc);
+	OCIO_DECLARE_HANDLE(DisplayTransformRcPtr);
+	OCIO_DECLARE_HANDLE(ConstTransformRcPtr);
+	OCIO_DECLARE_HANDLE(ExponentTransformRcPtr);
+	OCIO_DECLARE_HANDLE(MatrixTransformRcPtr);
+#endif
+
+
+ConstConfigRcPtr *OCIO_getCurrentConfig(void);
+void OCIO_setCurrentConfig(const ConstConfigRcPtr *config);
+
+ConstConfigRcPtr *OCIO_configCreateFromEnv(void);
+ConstConfigRcPtr *OCIO_configCreateFromFile(const char* filename);
+
+void OCIO_configRelease(ConstConfigRcPtr *config);
+
+int OCIO_configGetNumColorSpaces(ConstConfigRcPtr *config);
+const char *OCIO_configGetColorSpaceNameByIndex(ConstConfigRcPtr *config, int index);
+ConstColorSpaceRcPtr *OCIO_configGetColorSpace(ConstConfigRcPtr *config, const char *name);
+int OCIO_configGetIndexForColorSpace(ConstConfigRcPtr *config, const char *name);
+
+int OCIO_colorSpaceIsInvertible(ConstColorSpaceRcPtr *cs);
+
+void OCIO_colorSpaceRelease(ConstColorSpaceRcPtr *cs);
+
+const char *OCIO_configGetDefaultDisplay(ConstConfigRcPtr *config);
+int         OCIO_configGetNumDisplays(ConstConfigRcPtr *config);
+const char *OCIO_configGetDisplay(ConstConfigRcPtr *config, int index);
+const char *OCIO_configGetDefaultView(ConstConfigRcPtr *config, const char *display);
+int         OCIO_configGetNumViews(ConstConfigRcPtr *config, const char *display);
+const char *OCIO_configGetView(ConstConfigRcPtr *config, const char *display, int index);
+const char *OCIO_configGetDisplayColorSpaceName(ConstConfigRcPtr *config, const char *display, const char *view);
+
+ConstProcessorRcPtr *OCIO_configGetProcessorWithNames(ConstConfigRcPtr *config, const char *srcName, const char *dstName);
+ConstProcessorRcPtr *OCIO_configGetProcessor(ConstConfigRcPtr *config, ConstTransformRcPtr *transform);
+
+void OCIO_processorApply(ConstProcessorRcPtr *processor, PackedImageDesc *img);
+void OCIO_processorApply_predivide(ConstProcessorRcPtr *processor, PackedImageDesc *img);
+void OCIO_processorApplyRGB(ConstProcessorRcPtr *processor, float *pixel);
+void OCIO_processorApplyRGBA(ConstProcessorRcPtr *processor, float *pixel);
+void OCIO_processorApplyRGBA_predivide(ConstProcessorRcPtr *processor, float *pixel);
+
+void OCIO_processorRelease(ConstProcessorRcPtr *p);
+
+const char *OCIO_colorSpaceGetName(ConstColorSpaceRcPtr *cs);
+const char *OCIO_colorSpaceGetDescription(ConstColorSpaceRcPtr *cs);
+const char *OCIO_colorSpaceGetFamily(ConstColorSpaceRcPtr *cs);
+
+DisplayTransformRcPtr *OCIO_createDisplayTransform(void);
+void OCIO_displayTransformSetInputColorSpaceName(DisplayTransformRcPtr *dt, const char *name);
+void OCIO_displayTransformSetDisplay(DisplayTransformRcPtr *dt, const char *name);
+void OCIO_displayTransformSetView(DisplayTransformRcPtr *dt, const char *name);
+void OCIO_displayTransformSetDisplayCC(DisplayTransformRcPtr *dt, ConstTransformRcPtr *et);
+void OCIO_displayTransformSetLinearCC(DisplayTransformRcPtr *dt, ConstTransformRcPtr *et);
+void OCIO_displayTransformRelease(DisplayTransformRcPtr *dt);
+
+PackedImageDesc *OCIO_createPackedImageDesc(float *data, long width, long height, long numChannels,
+                                            long chanStrideBytes, long xStrideBytes, long yStrideBytes);
+
+void OCIO_packedImageDescRelease(PackedImageDesc *p);
+
+ExponentTransformRcPtr *OCIO_createExponentTransform(void);
+void OCIO_exponentTransformSetValue(ExponentTransformRcPtr *et, const float *exponent);
+void OCIO_exponentTransformRelease(ExponentTransformRcPtr *et);
+
+MatrixTransformRcPtr *OCIO_createMatrixTransform(void);
+void OCIO_matrixTransformSetValue(MatrixTransformRcPtr *et, const float *m44, const float *offset4);
+void OCIO_matrixTransformRelease(MatrixTransformRcPtr *mt);
+
+void OCIO_matrixTransformScale(float * m44, float * offset4, const float * scale4);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //OCIO_CAPI_H