Color Management: fallback to stub ocio implementation in cases when

ocio configuration file failed to load

This solves issues with infinite NULL-checks to prevent crashes in
such situations. Currently only happens if there's no configuration
file at all, but could be tweaked further to fallback if this file
isn't usable by blender.

1 files changed, 286 insertions, 0 deletions

diff --git a/intern/opencolorio/ocio_capi.cc b/intern/opencolorio/ocio_capi.cc
new file mode 100644
index 00000000000..20e7cc23daa
--- /dev/null
+++ b/intern/opencolorio/ocio_capi.cc
@@ -0,0 +1,286 @@
+/*
+ * ***** 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): Sergey Sharybin
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include "MEM_guardedalloc.h"
+
+namespace OCIO_NAMESPACE {};
+
+#include "ocio_impl.h"
+
+static IOCIOImpl *impl = NULL;
+
+void OCIO_init(void)
+{
+#ifdef WITH_OCIO
+	impl = new OCIOImpl();
+#else
+	impl = new FallbackImpl();
+#endif
+}
+
+void OCIO_exit(void)
+{
+	delete impl;
+	impl = NULL;
+}
+
+ConstConfigRcPtr *OCIO_getCurrentConfig(void)
+{
+	return impl->getCurrentConfig();
+}
+
+ConstConfigRcPtr *OCIO_configCreateFallback(void)
+{
+	delete impl;
+	impl = new FallbackImpl();
+
+	return impl->getCurrentConfig();
+}
+
+void OCIO_setCurrentConfig(const ConstConfigRcPtr *config)
+{
+	impl->setCurrentConfig(config);
+}
+
+ConstConfigRcPtr *OCIO_configCreateFromEnv(void)
+{
+	return impl->configCreateFromEnv();
+}
+
+ConstConfigRcPtr *OCIO_configCreateFromFile(const char *filename)
+{
+	return impl->configCreateFromFile(filename);
+}
+
+void OCIO_configRelease(ConstConfigRcPtr *config)
+{
+	impl->configRelease(config);
+}
+
+int OCIO_configGetNumColorSpaces(ConstConfigRcPtr *config)
+{
+	return impl->configGetNumColorSpaces(config);
+}
+
+const char *OCIO_configGetColorSpaceNameByIndex(ConstConfigRcPtr *config, int index)
+{
+	return impl->configGetColorSpaceNameByIndex(config, index);
+}
+
+ConstColorSpaceRcPtr *OCIO_configGetColorSpace(ConstConfigRcPtr *config, const char *name)
+{
+	return impl->configGetColorSpace(config, name);
+}
+
+int OCIO_configGetIndexForColorSpace(ConstConfigRcPtr *config, const char *name)
+{
+	return impl->configGetIndexForColorSpace(config, name);
+}
+
+const char *OCIO_configGetDefaultDisplay(ConstConfigRcPtr *config)
+{
+	return impl->configGetDefaultDisplay(config);
+}
+
+int OCIO_configGetNumDisplays(ConstConfigRcPtr* config)
+{
+	return impl->configGetNumDisplays(config);
+}
+
+const char *OCIO_configGetDisplay(ConstConfigRcPtr *config, int index)
+{
+	return impl->configGetDisplay(config, index);
+}
+
+const char *OCIO_configGetDefaultView(ConstConfigRcPtr *config, const char *display)
+{
+	return impl->configGetDefaultView(config, display);
+}
+
+int OCIO_configGetNumViews(ConstConfigRcPtr *config, const char *display)
+{
+	return impl->configGetNumViews(config, display);
+}
+
+const char *OCIO_configGetView(ConstConfigRcPtr *config, const char *display, int index)
+{
+	return impl->configGetView(config, display, index);
+}
+
+const char *OCIO_configGetDisplayColorSpaceName(ConstConfigRcPtr *config, const char *display, const char *view)
+{
+	return impl->configGetDisplayColorSpaceName(config, display, view);
+}
+
+int OCIO_colorSpaceIsInvertible(ConstColorSpaceRcPtr *cs)
+{
+	return impl->colorSpaceIsInvertible(cs);
+}
+
+int OCIO_colorSpaceIsData(ConstColorSpaceRcPtr *cs)
+{
+	return impl->colorSpaceIsData(cs);
+}
+
+void OCIO_colorSpaceRelease(ConstColorSpaceRcPtr *cs)
+{
+	impl->colorSpaceRelease(cs);
+}
+
+ConstProcessorRcPtr *OCIO_configGetProcessorWithNames(ConstConfigRcPtr *config, const char *srcName, const char *dstName)
+{
+	return impl->configGetProcessorWithNames(config, srcName, dstName);
+}
+
+ConstProcessorRcPtr *OCIO_configGetProcessor(ConstConfigRcPtr *config, ConstTransformRcPtr *transform)
+{
+	return impl->configGetProcessor(config, transform);
+}
+
+void OCIO_processorApply(ConstProcessorRcPtr *processor, PackedImageDesc *img)
+{
+	impl->processorApply(processor, img);
+}
+
+void OCIO_processorApply_predivide(ConstProcessorRcPtr *processor, PackedImageDesc *img)
+{
+	impl->processorApply_predivide(processor, img);
+}
+
+void OCIO_processorApplyRGB(ConstProcessorRcPtr *processor, float *pixel)
+{
+	impl->processorApplyRGB(processor, pixel);
+}
+
+void OCIO_processorApplyRGBA(ConstProcessorRcPtr *processor, float *pixel)
+{
+	impl->processorApplyRGBA(processor, pixel);
+}
+
+void OCIO_processorApplyRGBA_predivide(ConstProcessorRcPtr *processor, float *pixel)
+{
+	impl->processorApplyRGBA_predivide(processor, pixel);
+}
+
+void OCIO_processorRelease(ConstProcessorRcPtr *p)
+{
+	impl->processorRelease(p);
+}
+
+const char *OCIO_colorSpaceGetName(ConstColorSpaceRcPtr *cs)
+{
+	return impl->colorSpaceGetName(cs);
+}
+
+const char *OCIO_colorSpaceGetDescription(ConstColorSpaceRcPtr *cs)
+{
+	return impl->colorSpaceGetDescription(cs);
+}
+
+const char *OCIO_colorSpaceGetFamily(ConstColorSpaceRcPtr *cs)
+{
+	return impl->colorSpaceGetFamily(cs);
+}
+
+DisplayTransformRcPtr *OCIO_createDisplayTransform(void)
+{
+	return impl->createDisplayTransform();
+}
+
+void OCIO_displayTransformSetInputColorSpaceName(DisplayTransformRcPtr *dt, const char *name)
+{
+	impl->displayTransformSetInputColorSpaceName(dt, name);
+}
+
+void OCIO_displayTransformSetDisplay(DisplayTransformRcPtr *dt, const char *name)
+{
+	impl->displayTransformSetDisplay(dt, name);
+}
+
+void OCIO_displayTransformSetView(DisplayTransformRcPtr *dt, const char *name)
+{
+	impl->displayTransformSetView(dt, name);
+}
+
+void OCIO_displayTransformSetDisplayCC(DisplayTransformRcPtr *dt, ConstTransformRcPtr *t)
+{
+	impl->displayTransformSetDisplayCC(dt, t);
+}
+
+void OCIO_displayTransformSetLinearCC(DisplayTransformRcPtr *dt, ConstTransformRcPtr *t)
+{
+	impl->displayTransformSetLinearCC(dt, t);
+}
+
+void OCIO_displayTransformRelease(DisplayTransformRcPtr *dt)
+{
+	impl->displayTransformRelease(dt);
+}
+
+PackedImageDesc *OCIO_createPackedImageDesc(float *data, long width, long height, long numChannels,
+                                            long chanStrideBytes, long xStrideBytes, long yStrideBytes)
+{
+	return impl->createPackedImageDesc(data, width, height, numChannels, chanStrideBytes, xStrideBytes, yStrideBytes);
+}
+
+void OCIO_packedImageDescRelease(PackedImageDesc* id)
+{
+	impl->packedImageDescRelease(id);
+}
+
+ExponentTransformRcPtr *OCIO_createExponentTransform(void)
+{
+	return impl->createExponentTransform();
+}
+
+void OCIO_exponentTransformSetValue(ExponentTransformRcPtr *et, const float *exponent)
+{
+	impl->exponentTransformSetValue(et, exponent);
+}
+
+void OCIO_exponentTransformRelease(ExponentTransformRcPtr *et)
+{
+	impl->exponentTransformRelease(et);
+}
+
+MatrixTransformRcPtr *OCIO_createMatrixTransform(void)
+{
+	return impl->createMatrixTransform();
+}
+
+void OCIO_matrixTransformSetValue(MatrixTransformRcPtr *mt, const float *m44, const float *offset4)
+{
+	impl->matrixTransformSetValue(mt, m44, offset4);
+}
+
+void OCIO_matrixTransformRelease(MatrixTransformRcPtr *mt)
+{
+	impl->matrixTransformRelease(mt);
+}
+
+void OCIO_matrixTransformScale(float * m44, float * offset4, const float *scale4f)
+{
+	impl->matrixTransformScale(m44, offset4, scale4f);
+}