-#ifndef _DIFFUSION_EFFECT_H
-#define _DIFFUSION_EFFECT_H 1
+#ifndef _MOVIT_DIFFUSION_EFFECT_H
+#define _MOVIT_DIFFUSION_EFFECT_H 1
// There are many different effects that go under the name of "diffusion",
// seemingly all of the inspired by the effect you get when you put a
// where we first blur the picture, and then overlay it on the original
// using the original as a matte.
+#include <epoxy/gl.h>
+#include <assert.h>
+#include <string>
+
#include "effect.h"
+namespace movit {
+
class BlurEffect;
+class EffectChain;
+class Node;
class OverlayMatteEffect;
class DiffusionEffect : public Effect {
public:
DiffusionEffect();
- virtual std::string effect_type_id() const { return "DiffusionEffect"; }
+ ~DiffusionEffect();
+ std::string effect_type_id() const override { return "DiffusionEffect"; }
- virtual void rewrite_graph(EffectChain *graph, Node *self);
- virtual bool set_float(const std::string &key, float value);
+ void rewrite_graph(EffectChain *graph, Node *self) override;
+ bool set_float(const std::string &key, float value) override;
- virtual std::string output_fragment_shader() {
+ std::string output_fragment_shader() override {
assert(false);
}
- virtual void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num) {
+ void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num) override {
assert(false);
}
private:
BlurEffect *blur;
OverlayMatteEffect *overlay_matte;
+ bool owns_overlay_matte;
};
// Used internally by DiffusionEffect; combines the blurred and the original
class OverlayMatteEffect : public Effect {
public:
OverlayMatteEffect();
- virtual std::string effect_type_id() const { return "OverlayMatteEffect"; }
- std::string output_fragment_shader();
+ std::string effect_type_id() const override { return "OverlayMatteEffect"; }
+ std::string output_fragment_shader() override;
+ AlphaHandling alpha_handling() const override { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
- unsigned num_inputs() const { return 2; }
+ unsigned num_inputs() const override { return 2; }
+ bool one_to_one_sampling() const override { return true; }
private:
float blurred_mix_amount;
};
+} // namespace movit
-#endif // !defined(_DIFFUSION_EFFECT_H)
+#endif // !defined(_MOVIT_DIFFUSION_EFFECT_H)