In ResampleEffect, precompute the Lanczos function into a table.

[movit] / overlay_effect.h

diff --git a/overlay_effect.h b/overlay_effect.h
index 66ff31b94be55d19ffacb7714051baa2c785493c..c11569f4eec6c34e0eea4e169ee51b6142fef637 100644 (file)
--- a/overlay_effect.h
+++ b/overlay_effect.h
@@ -1,5 +1,5 @@
-#ifndef _OVERLAY_EFFECT_H
-#define _OVERLAY_EFFECT_H 1
+#ifndef _MOVIT_OVERLAY_EFFECT_H
+#define _MOVIT_OVERLAY_EFFECT_H 1
 
 // Put one image on top of another, using alpha where appropriate.
 // (If both images are the same aspect and the top image has alpha=1.0
@@ -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; }
 };
 
-#endif // !defined(_OVERLAY_EFFECT_H)
+}  // namespace movit
+
+#endif // !defined(_MOVIT_OVERLAY_EFFECT_H)