Method operator()

src/IECoreImage/ColorAlgo.cpp:64–114

	template<typename T>
	ReturnType operator()( T *data )
	{
		// \todo: remove this logic once `transformChannel` has been removed
		int width = ( m_width == 0 ) ? data->readable().size() : m_width;
		int height = ( m_height == 0 ) ? 1 : m_height;

		// present it as a single channel, single scanline image
		OpenImageIOAlgo::DataView dataView( data );
		ImageSpec spec( width, height, 1, dataView.type.elementtype() );
		ImageBuf buffer( spec, data->baseWritable() );

		ROI roi(
			/* xbegin */ spec.x, /* xend */ spec.width,
			/* ybegin */ spec.y, /* yend */ spec.height,
			/* zbegin */ 0, /* zend */ 1,
			/* chbegin */ 0, /* chend */ 1
		);

		// convert in-place
#if OIIO_VERSION > 10800
		bool status = ImageBufAlgo::colorconvert(
			/* dst */ buffer, /* src */ buffer,
			/* from */ m_inputSpace, /* to */ m_outputSpace,
			/* unpremult */ false,
			/* context_key */ "",
			/* context_value */ "",
			/* colorconfig */ OpenImageIOAlgo::colorConfig(),
			/* roi */ roi
		);
#elif OIIO_VERSION > 10701 
		bool status = ImageBufAlgo::colorconvert(
			/* dst */ buffer, /* src */ buffer,
			/* from */ m_inputSpace, /* to */ m_outputSpace,
			/* unpremult */ false,
			/* colorconfig */ OpenImageIOAlgo::colorConfig(),
			/* roi */ roi
		);
#else
		bool status = ImageBufAlgo::colorconvert(
			/* dst */ buffer, /* src */ buffer,
			/* from */ m_inputSpace, /* to */ m_outputSpace,
			/* unpremult */ false,
			/* roi */ roi
		);
#endif

		if( !status )
		{
			throw Exception( std::string( "ColorAlgo::transformImage : " + buffer.geterror() ) );
		}
	}

	const std::string &m_inputSpace;
	const std::string &m_outputSpace;