In ResampleEffect, precompute the Lanczos function into a table.

[movit] / input.h

diff --git a/input.h b/input.h
index da5b1fb287d599b204c32540835322677678b122..08f18da927c161b4ca5c778afee98d34f49b0768 100644 (file)
--- a/input.h
+++ b/input.h
@@ -6,10 +6,10 @@
 #include "effect.h"
 #include "image_format.h"
 
 #include "effect.h"
 #include "image_format.h"
 

+namespace movit {
+

 // An input is a degenerate case of an effect; it represents the picture data
 // An input is a degenerate case of an effect; it represents the picture data

-// that comes from the user. As such, it has zero “inputs” itself. Also, it
-// has an extra operation called finalize(), which runs when the effect chain
-// is finalized.
+// that comes from the user. As such, it has zero “inputs” itself.

 //
 // An input is, like any other effect, required to be able to output a GLSL
 // fragment giving a RGBA value (although that GLSL fragment will have zero
 //
 // An input is, like any other effect, required to be able to output a GLSL
 // fragment giving a RGBA value (although that GLSL fragment will have zero


@@ -19,20 +19,21 @@ class Input : public Effect {
 public:
        virtual unsigned num_inputs() const { return 0; }
 
 public:
        virtual unsigned num_inputs() const { return 0; }
 

-       // Create the texture itself. We cannot do this in the constructor,
-       // because we don't necessarily know all the settings (sRGB texture,
-       // mipmap generation) at that point.
-       virtual void finalize() = 0;
-

        // Whether this input can deliver linear gamma directly if it's
        // asked to. (If so, set the parameter “output_linear_gamma”
        // to activate it.)
        virtual bool can_output_linear_gamma() const = 0;
 
        // Whether this input can deliver linear gamma directly if it's
        // asked to. (If so, set the parameter “output_linear_gamma”
        // 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;
        virtual GammaCurve get_gamma_curve() const = 0;
 };
 
        virtual unsigned get_width() const = 0;
        virtual unsigned get_height() const = 0;
        virtual Colorspace get_color_space() const = 0;
        virtual GammaCurve get_gamma_curve() const = 0;
 };
 

+}  // namespace movit
+

 #endif // !defined(_MOVIT_INPUT_H)
 #endif // !defined(_MOVIT_INPUT_H)