In ResampleEffect, precompute the Lanczos function into a table.

[movit] / overlay_effect.h

diff --git a/overlay_effect.h b/overlay_effect.h
index 444fe3f67298c33acc0ec12c4287210802458c65..c11569f4eec6c34e0eea4e169ee51b6142fef637 100644 (file)
--- a/overlay_effect.h
+++ b/overlay_effect.h
@@ -14,6 +14,8 @@
 
 #include "effect.h"
 
+namespace movit {
+
 class OverlayEffect : public Effect {
 public:
        OverlayEffect();
@@ -22,6 +24,7 @@ public:
 
        virtual bool needs_srgb_primaries() const { return false; }
        virtual unsigned num_inputs() const { return 2; }
+       virtual bool one_to_one_sampling() const { return true; }
 
        // Actually, if _either_ image has blank alpha, our output will have
        // blank alpha, too (this only tells the framework that having _both_
@@ -31,4 +34,6 @@ public:
        virtual AlphaHandling alpha_handling() const { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
 };
 
+}  // namespace movit
+
 #endif // !defined(_MOVIT_OVERLAY_EFFECT_H)