Method doWrite

src/IECoreImage/ImageWriter.cpp:476–702

}

void ImageWriter::doWrite( const CompoundObject *operands )
{
	const ImagePrimitive *image = getImage();
	if( !image->channelsValid() )
	{
		throw InvalidArgumentException( "ImageWriter: Invalid channels on image" );
	}

	const Box2i &dataWindow = image->getDataWindow();
	const Box2i &displayWindow = image->getDisplayWindow();

	/// \todo: nearly everything below this point is copied from GafferImage::ImageWriter
	/// Can we consolidate some of this into IECoreImage::OpenImageIOAlgo?

	ImageOutputPtr out = createImageOutput( fileName() );
	if( !out )
	{
		throw IECore::Exception( OIIO::geterror() );
	}

	const std::string fileFormatName = out->format_name();
	const bool supportsDisplayWindow = (bool)out->supports( "displaywindow" ) && fileFormatName != "dpx";

	ImageSpec spec( TypeDesc::UNKNOWN );

	// Specify the display window.
	spec.full_x = displayWindow.min.x;
	spec.full_y = displayWindow.min.y;
	spec.full_width = displayWindow.size().x + 1;
	spec.full_height = displayWindow.size().y + 1;

	bool validDisplayWindow = supportsDisplayWindow && dataWindow.hasVolume();
	if( validDisplayWindow )
	{
		spec.x = dataWindow.min.x;
		spec.y = dataWindow.min.y;
		spec.width = dataWindow.size().x + 1;
		spec.height = dataWindow.size().y + 1;
	}
	else
	{
		spec.x = spec.full_x;
		spec.y = spec.full_y;
		spec.width = spec.full_width;
		spec.height = spec.full_height;
	}

	// Cleanse the image blindData and then add it to the spec
	CompoundDataPtr metadata = image->blindData()->copy();
	metadata->writable().erase( "oiio:ColorSpace" );
	metadata->writable().erase( "oiio:Gamma" );
	metadata->writable().erase( "oiio:UnassociatedAlpha" );
	metadata->writable().erase( "fileFormat" );
	metadata->writable().erase( "dataType" );

	metadataToImageSpecAttributes( metadata.get(), &spec );

	setImageSpecFormatOptions( operands->member<const CompoundObject>( "formatSettings" ), &spec, out->format_name() );