Method ImageTargetFileTinyExr

src/cinder/ImageFileTinyExr.cpp:267–304

}

ImageTargetFileTinyExr::ImageTargetFileTinyExr( DataTargetRef dataTarget, ImageSourceRef imageSource, ImageTarget::Options options, const std::string & /*extensionData*/ )
{
	if( ! dataTarget->providesFilePath() ) {
		throw ImageIoExceptionFailedWrite( "ImageTargetFileTinyExr only supports writing to files." );
	}

	mFilePath = dataTarget->getFilePath();

	setSize( imageSource->getWidth(), imageSource->getHeight() );
	ImageIo::ColorModel cm = options.isColorModelDefault() ? imageSource->getColorModel() : options.getColorModel();

	switch( cm ) {
		case ImageIo::ColorModel::CM_RGB:
			mNumComponents = ( imageSource->hasAlpha() ) ? 4 : 3;
			setColorModel( ImageIo::ColorModel::CM_RGB );
			setChannelOrder( ( mNumComponents == 3 ) ? ImageIo::ChannelOrder::BGR : ImageIo::ChannelOrder::ABGR );
			if( mNumComponents == 3 )
				mChannelNames = { "B", "G", "R" };
			else
				mChannelNames = { "A", "B", "G", "R" };
			break;
		case ImageIo::ColorModel::CM_GRAY:
			mNumComponents = ( imageSource->hasAlpha() ) ? 2 : 1;
			setColorModel( ImageIo::ColorModel::CM_GRAY );
			setChannelOrder( ( mNumComponents == 2 ) ? ImageIo::ChannelOrder::YA : ImageIo::ChannelOrder::Y );
			if( mNumComponents == 2 )
				mChannelNames = { "Y", "A" };
			else
				mChannelNames = { "Y" };
			break;
		default:
			throw ImageIoExceptionIllegalColorModel();
	}

	// TODO: consider supporting half float and uint types as well
	setDataType( ImageIo::DataType::FLOAT32 );
	mData.resize( mHeight * mWidth * mNumComponents );
}

void *ImageTargetFileTinyExr::getRowPointer( int32_t row )
{