In ResampleEffect, precompute the Lanczos function into a table.

[movit] / input.h

diff --git a/input.h b/input.h
index 7652e1793a4599d01fb726bfbf939741ac01d2aa..08f18da927c161b4ca5c778afee98d34f49b0768 100644 (file)
--- a/input.h
+++ b/input.h
@@ -24,6 +24,10 @@ public:
        // to activate it.)
        virtual bool can_output_linear_gamma() const = 0;
 
+       // Whether this input can supply mipmaps if asked to (by setting
+       // the "needs_mipmaps" integer parameter set to 1).
+       virtual bool can_supply_mipmaps() const { return true; }
+
        virtual unsigned get_width() const = 0;
        virtual unsigned get_height() const = 0;
        virtual Colorspace get_color_space() const = 0;