remove duplicated ocio init

Author: fabiencastan

src/aliceVision/image/io.cpp

@@ -872,13 +872,8 @@ void readImage(const std::string& path, oiio::TypeDesc format, int nchannels, Im
     else if (EImageColorSpace_isSupportedOIIOEnum(imageReadOptions.workingColorSpace) &&
              EImageColorSpace_isSupportedOIIOEnum(EImageColorSpace_stringToEnum(fromColorSpaceName)))
     {
-        const auto colorConfigPath = getAliceVisionOCIOConfig();
-        if (colorConfigPath.empty())
-        {
-            throw std::runtime_error("ALICEVISION_ROOT is not defined, OCIO config file cannot be accessed.");
-        }
         oiio::ImageBuf colorspaceBuf;
-        oiio::ColorConfig colorConfig(colorConfigPath);
+        oiio::ColorConfig& colorConfig(getGlobalColorConfigOCIO());
         oiio::ImageBufAlgo::colorconvert(colorspaceBuf,
                                          inBuf,
                                          fromColorSpaceName,
@@ -1103,12 +1098,7 @@ void writeImage(const std::string& path,
     }
     else if (EImageColorSpace_isSupportedOIIOEnum(fromColorSpace) && EImageColorSpace_isSupportedOIIOEnum(toColorSpace))
     {
-        const auto colorConfigPath = getAliceVisionOCIOConfig();
-        if (colorConfigPath.empty())
-        {
-            throw std::runtime_error("ALICEVISION_ROOT is not defined, OCIO config file cannot be accessed.");
-        }
-        oiio::ColorConfig colorConfig(colorConfigPath);
+        oiio::ColorConfig& colorConfig(getGlobalColorConfigOCIO());
         oiio::ImageBufAlgo::colorconvert(colorspaceBuf,
                                          *outBuf,
                                          EImageColorSpace_enumToOIIOString(fromColorSpace),
@@ -1395,13 +1385,6 @@ std::string getAliceVisionRoot()
     return value ? value : "";
 }
 
-std::string getAliceVisionOCIOConfig()
-{
-    if (!getAliceVisionRoot().empty())
-        return getAliceVisionRoot() + "/share/aliceVision/config.ocio";
-    return {};
-}
-
 void setAliceVisionRootOverride(const std::string& value) { aliceVisionRootOverride = value; }
 
 }  // namespace image

src/aliceVision/image/io.hpp

@@ -552,10 +552,6 @@ bool tryLoadMask(Image<unsigned char>* mask,
 // TODO: use std::optional when the C++ standard version is upgraded to C++17
 std::string getAliceVisionRoot();
 
-/// Returns path to OpenColorIO config that is shipped with aliceVision
-std::string getAliceVisionOCIOConfig();
-
-void setAliceVisionRootOverride(const std::string& value);
 
 }  // namespace image
 }  // namespace aliceVision

src/software/pipeline/main_panoramaPostProcessing.cpp

@@ -223,12 +223,7 @@ void colorSpaceTransform(image::Image<image::RGBAfColor>& inputImage,
     }
     else if (EImageColorSpace_isSupportedOIIOEnum(toColorSpace) && EImageColorSpace_isSupportedOIIOEnum(fromColorSpace))
     {
-        const auto colorConfigPath = image::getAliceVisionOCIOConfig();
-        if (colorConfigPath.empty())
-        {
-            throw std::runtime_error("ALICEVISION_ROOT is not defined, OCIO config file cannot be accessed.");
-        }
-        oiio::ColorConfig colorConfig(colorConfigPath);
+        oiio::ColorConfig& colorConfig(image::getGlobalColorConfigOCIO());
         oiio::ImageBufAlgo::colorconvert(colorspaceBuf,
                                          *outBuf,
                                          EImageColorSpace_enumToOIIOString(fromColorSpace),