Function ApplyCDL

tests/cpu/ops/cdl/CDLOp_tests.cpp:17–53

namespace
{
void ApplyCDL(float * in, const float * ref, unsigned numPixels,
              const double * slope, const double * offset,
              const double * power, double saturation,
              OCIO::CDLOpData::Style style, float errorThreshold)
{
    OCIO::CDLOpDataRcPtr data
        = std::make_shared<OCIO::CDLOpData>(style,
                                            OCIO::CDLOpData::ChannelParams(slope[0],  slope[1],  slope[2]),
                                            OCIO::CDLOpData::ChannelParams(offset[0], offset[1], offset[2]),
                                            OCIO::CDLOpData::ChannelParams(power[0],  power[1],  power[2]),
                                            saturation);
    OCIO::CDLOp cdlOp(data);

    OCIO_CHECK_NO_THROW(cdlOp.validate());

    const auto cpu = cdlOp.getCPUOp(true);
    cpu->apply(in, in, numPixels);

    for(unsigned idx=0; idx<(numPixels*4); ++idx)
    {
        // Using rel error with a large minExpected value of 1 will transition
        // from absolute error for expected values < 1 and
        // relative error for values > 1.
        const bool equalRel = OCIO::EqualWithSafeRelError(in[idx],
                                                          ref[idx],
                                                          errorThreshold,
                                                          1.0f);
        if (!equalRel)
        {
            std::ostringstream message;
            message << "Index: " << idx;
            message << " - Values: " << in[idx] << " and: " << ref[idx];
            message << " - Threshold: " << errorThreshold;
            OCIO_CHECK_ASSERT_MESSAGE(0, message.str());
        }
    }
}

}