bool
GenericOCIO::isIdentity(double time)
{
assert(_created);
#ifdef OFX_IO_USING_OCIO
if (!_config) {
return true;
}
std::string inputSpace;
getInputColorspaceAtTime(time, inputSpace);
std::string outputSpace;
getOutputColorspaceAtTime(time, outputSpace);
if (inputSpace == outputSpace) {
return true;
}
// must clear persistent message in isIdentity, or render() is not called by Nuke after an error
_parent->clearPersistentMessage();
try {
// maybe the names are not the same, but it's still a no-op (e.g. "scene_linear" and "linear")
OCIO::ConstContextRcPtr context = getLocalContext(time);//_config->getCurrentContext();
OCIO_NAMESPACE::ConstProcessorRcPtr proc = _config->getProcessor(context, inputSpace.c_str(), outputSpace.c_str());
return proc->isNoOp();
} catch (const std::exception& e) {
_parent->setPersistentMessage(OFX::Message::eMessageError, "", e.what());
OFX::throwSuiteStatusException(kOfxStatFailed);
return false;
}
#else
return true;
#endif
}
ColorProcessor*
ColorConfig::createColorProcessor (string_view inputColorSpace,
string_view outputColorSpace,
string_view context_key,
string_view context_value) const
{
string_view inputrole, outputrole;
std::string pending_error;
#ifdef USE_OCIO
// Ask OCIO to make a Processor that can handle the requested
// transformation.
OCIO::ConstProcessorRcPtr p;
if (getImpl()->config_) {
// If the names are roles, convert them to color space names
string_view name;
name = getColorSpaceNameByRole (inputColorSpace);
if (! name.empty()) {
inputrole = inputColorSpace;
inputColorSpace = name;
}
name = getColorSpaceNameByRole (outputColorSpace);
if (! name.empty()) {
outputrole = outputColorSpace;
outputColorSpace = name;
}
OCIO::ConstConfigRcPtr config = getImpl()->config_;
OCIO::ConstContextRcPtr context = config->getCurrentContext();
std::vector<string_view> keys, values;
Strutil::split (context_key, keys, ",");
Strutil::split (context_value, values, ",");
if (keys.size() && values.size() && keys.size() == values.size()) {
OCIO::ContextRcPtr ctx = context->createEditableCopy();
for (size_t i = 0; i < keys.size(); ++i)
ctx->setStringVar (keys[i].c_str(), values[i].c_str());
context = ctx;
}
try {
// Get the processor corresponding to this transform.
p = getImpl()->config_->getProcessor(context, inputColorSpace.c_str(),
outputColorSpace.c_str());
}
catch(OCIO::Exception &e) {
// Don't quit yet, remember the error and see if any of our
// built-in knowledge of some generic spaces will save us.
p.reset();
pending_error = e.what();
}
catch(...) {
getImpl()->error_ = "An unknown error occurred in OpenColorIO, getProcessor";
return NULL;
}
getImpl()->error_ = "";
if (p && ! p->isNoOp()) {
// If we got a valid processor that does something useful,
// return it now. If it boils down to a no-op, give a second
// chance below to recognize it as a special case.
return new ColorProcessor_OCIO(p);
}
}
#endif
// Either not compiled with OCIO support, or no OCIO configuration
// was found at all. There are a few color conversions we know
// about even in such dire conditions.
using namespace Strutil;
if (iequals(inputColorSpace,outputColorSpace)) {
return new ColorProcessor_Ident;
}
if ((iequals(inputColorSpace,"linear") || iequals(inputrole,"linear") ||
iequals(inputColorSpace,"lnf") || iequals(inputColorSpace,"lnh"))
&& iequals(outputColorSpace,"sRGB")) {
return new ColorProcessor_linear_to_sRGB;
}
if (iequals(inputColorSpace,"sRGB") &&
(iequals(outputColorSpace,"linear") || iequals(outputrole,"linear") ||
iequals(outputColorSpace,"lnf") || iequals(outputColorSpace,"lnh"))) {
return new ColorProcessor_sRGB_to_linear;
}
if ((iequals(inputColorSpace,"linear") || iequals(inputrole,"linear") ||
iequals(inputColorSpace,"lnf") || iequals(inputColorSpace,"lnh")) &&
iequals(outputColorSpace,"Rec709")) {
return new ColorProcessor_linear_to_Rec709;
}
if (iequals(inputColorSpace,"Rec709") &&
(iequals(outputColorSpace,"linear") || iequals(outputrole,"linear") ||
iequals(outputColorSpace,"lnf") || iequals(outputColorSpace,"lnh"))) {
return new ColorProcessor_Rec709_to_linear;
}
#ifdef USE_OCIO
if (p) {
// If we found a procesor from OCIO, even if it was a NoOp, and we
// still don't have a better idea, return it.
return new ColorProcessor_OCIO(p);
}
#endif
if (pending_error.size())
getImpl()->error_ = pending_error;
return NULL; // if we get this far, we've failed
}
ColorProcessor*
ColorConfig::createColorProcessor (string_view inputColorSpace,
string_view outputColorSpace) const
{
string_view inputrole, outputrole;
#ifdef USE_OCIO
// Ask OCIO to make a Processor that can handle the requested
// transformation.
OCIO::ConstProcessorRcPtr p;
if (getImpl()->config_) {
// If the names are roles, convert them to color space names
string_view name;
name = getColorSpaceNameByRole (inputColorSpace);
if (! name.empty()) {
inputrole = inputColorSpace;
inputColorSpace = name;
}
name = getColorSpaceNameByRole (outputColorSpace);
if (! name.empty()) {
outputrole = outputColorSpace;
outputColorSpace = name;
}
try {
// Get the processor corresponding to this transform.
p = getImpl()->config_->getProcessor(inputColorSpace.c_str(),
outputColorSpace.c_str());
}
catch(OCIO::Exception &e) {
getImpl()->error_ = e.what();
return NULL;
}
catch(...) {
getImpl()->error_ = "An unknown error occurred in OpenColorIO, getProcessor";
return NULL;
}
getImpl()->error_ = "";
if (p && ! p->isNoOp()) {
// If we got a valid processor that does something useful,
// return it now. If it boils down to a no-op, give a second
// chance below to recognize it as a special case.
return new ColorProcessor_OCIO(p);
}
}
#endif
// Either not compiled with OCIO support, or no OCIO configuration
// was found at all. There are a few color conversions we know
// about even in such dire conditions.
using namespace Strutil;
if ((iequals(inputColorSpace,"linear") || iequals(inputrole,"linear")) &&
iequals(outputColorSpace,"sRGB")) {
return new ColorProcessor_linear_to_sRGB;
}
if (iequals(inputColorSpace,"sRGB") &&
(iequals(outputColorSpace,"linear") || iequals(outputrole,"linear"))) {
return new ColorProcessor_sRGB_to_linear;
}
if ((iequals(inputColorSpace,"linear") || iequals(inputrole,"linear")) &&
iequals(outputColorSpace,"Rec709")) {
return new ColorProcessor_linear_to_Rec709;
}
if (iequals(inputColorSpace,"Rec709") &&
(iequals(outputColorSpace,"linear") || iequals(outputrole,"linear"))) {
// No OCIO, or the OCIO config doesn't know linear->sRGB
return new ColorProcessor_Rec709_to_linear;
}
if (iequals(inputColorSpace, outputColorSpace))
{
// Color spaces are equal, and nothing found by OCIO
return new ColorProcessor_pass_through;
}
#ifdef USE_OCIO
if (p) {
// If we found a procesor from OCIO, even if it was a NoOp, and we
// still don't have a better idea, return it.
return new ColorProcessor_OCIO(p);
}
#endif
return NULL; // if we get this far, we've failed
}
