-
-protected:
- boost::shared_ptr<Log> _log;
-};
-
-class RawImageProxy : public ImageProxy
-{
-public:
- RawImageProxy (boost::shared_ptr<Image>, boost::shared_ptr<Log> log);
- RawImageProxy (boost::shared_ptr<cxml::Node> xml, boost::shared_ptr<Socket> socket, boost::shared_ptr<Log> log);
-
- boost::shared_ptr<Image> image () const;
- void add_metadata (xmlpp::Node *) const;
- void send_binary (boost::shared_ptr<Socket>) const;
-
-private:
- boost::shared_ptr<Image> _image;
-};
-
-class MagickImageProxy : public ImageProxy
-{
-public:
- MagickImageProxy (boost::filesystem::path, boost::shared_ptr<Log> log);
- MagickImageProxy (boost::shared_ptr<cxml::Node> xml, boost::shared_ptr<Socket> socket, boost::shared_ptr<Log> log);
-
- boost::shared_ptr<Image> image () const;
- void add_metadata (xmlpp::Node *) const;
- void send_binary (boost::shared_ptr<Socket>) const;
-
-private:
- Magick::Blob _blob;
- mutable boost::shared_ptr<Image> _image;
+ /** @return true if our image is definitely the same as another, false if it is probably not */
+ virtual bool same (boost::shared_ptr<const ImageProxy>) const = 0;
+ /** Do any useful work that would speed up a subsequent call to ::image().
+ * This method may be called in a different thread to image().
+ * @return log2 of any scaling down that will be applied to the image.
+ */
+ virtual int prepare (boost::optional<dcp::Size> = boost::optional<dcp::Size>()) const { return 0; }
+ virtual size_t memory_used () const = 0;