Function initP010

sources/utils/FrameDecoder.cpp:131–179

	static void initP010()
	{
		static std::mutex lockerP010;
		std::lock_guard<std::mutex> locker(lockerP010);

		if (FrameDecoderUtils::initialized)
			return;

		lutP010_y.resize(1024);
		lutP010_uv.resize(1024);

		for (int i = 0; i < static_cast<int>(lutP010_y.size()); ++i)
		{
			constexpr int sourceRange = 1023;
			const double sourceValue = std::min(std::max(i, 0), sourceRange)/static_cast<double>(sourceRange);
			double val = packLuminanceP010(sourceValue);
			lutP010_y[i] = std::lround(val * 255.0);

			/*
			double unpack = unpackLuminanceP010(val);
			double delta = sourceValue - unpack;
			if (std::abs(delta) > 0.0000001)
			{
				bool error = true;
			}
			*/
		}


		for (int i = 0; i < static_cast<int>(lutP010_uv.size()); ++i)
		{
			constexpr int sourceRange = (960 - 64) / 2;
			const int current = std::abs(i - 512);
			const double sourceValue = std::min(current, sourceRange) / static_cast<double>(sourceRange);
			double val = packChromaP010(sourceValue);
			lutP010_uv[i] = std::max(std::min(128 + std::lround(((i < 512) ? -val : val) * 128.0), 255l), 0l);;

			/*
			double unpack = unpackChromaP010(val);
			double delta = sourceValue - unpack;
			if (std::abs(delta) > 0.0000001)
			{
				bool error = true;
			}
			*/
		}

		FrameDecoderUtils::initialized = true;
	};	
};

using namespace FrameDecoderUtils;