public:
virtual ~ImageProxy () {}
+ struct Result {
+ Result (boost::shared_ptr<Image> image_, int log2_scaling_)
+ : image (image_)
+ , log2_scaling (log2_scaling_)
+ {}
+
+ /** Image (which will be aligned) */
+ boost::shared_ptr<Image> image;
+ /** log2 of any scaling down that has already been applied to the image;
+ * e.g. if the image is already half the size of the original, this value
+ * will be 1.
+ */
+ int log2_scaling;
+ };
+
/** @param log Log to write to, or 0.
* @param size Size that the returned image will be scaled to, in case this
* can be used as an optimisation.
- * @return Image (which must be aligned) and log2 of any scaling down that has
- * already been applied to the image; e.g. if the the image is already half the size
- * of the original, the second part of the return value will be 1.
*/
- virtual std::pair<boost::shared_ptr<Image>, int> image (
+ virtual Result image (
boost::optional<dcp::Size> size = boost::optional<dcp::Size> ()
) const = 0;