Make number of BlurEffect taps configurable.

[movit] / blur_effect.h

diff --git a/blur_effect.h b/blur_effect.h
index ad269f558e57c7112ab1ec07732d227705783048..f531eb6e85aecb4a3305800e01051f510bb0a48b 100644 (file)
--- a/blur_effect.h
+++ b/blur_effect.h
@@ -8,6 +8,11 @@
 // Works in two passes; first horizontal, then vertical (BlurEffect,
 // which is what the user is intended to use, instantiates two copies of
 // SingleBlurPassEffect behind the scenes).
+//
+// The recommended number of taps is the default (16). Fewer will be faster
+// but uglier; a tradeoff that might be worth it as part of more complicated
+// effects. This can be set only before finalization, and must be an
+// even number.
 
 #include <epoxy/gl.h>
 #include <assert.h>
@@ -45,10 +50,12 @@ public:
 
        virtual void rewrite_graph(EffectChain *graph, Node *self);
        virtual bool set_float(const std::string &key, float value);
+       virtual bool set_int(const std::string &key, int value);
        
 private:
        void update_radius();
-       
+
+       int num_taps;
        float radius;
        SingleBlurPassEffect *hpass, *vpass;
        unsigned input_width, input_height;
@@ -89,6 +96,7 @@ public:
 
 private:
        BlurEffect *parent;
+       int num_taps;
        float radius;
        Direction direction;
        int width, height, virtual_width, virtual_height;