/usr/include/movit/glow_effect.h is in libmovit-dev 1.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | #ifndef _MOVIT_GLOW_EFFECT_H
#define _MOVIT_GLOW_EFFECT_H 1
// Glow: Cut out the highlights of the image (everything above a certain threshold),
// blur them, and overlay them onto the original image.
#include <epoxy/gl.h>
#include <assert.h>
#include <string>
#include "effect.h"
namespace movit {
class BlurEffect;
class EffectChain;
class HighlightCutoffEffect;
class MixEffect;
class Node;
class GlowEffect : public Effect {
public:
GlowEffect();
virtual std::string effect_type_id() const { return "GlowEffect"; }
virtual bool needs_srgb_primaries() const { return false; }
virtual void rewrite_graph(EffectChain *graph, Node *self);
virtual bool set_float(const std::string &key, float value);
virtual std::string output_fragment_shader() {
assert(false);
}
virtual void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num) {
assert(false);
}
private:
BlurEffect *blur;
HighlightCutoffEffect *cutoff;
MixEffect *mix;
};
// An effect that cuts out only the highlights of an image;
// anything at the cutoff or below is set to 0.0, and then all other pixels
// get the cutoff subtracted. Used only as part of GlowEffect.
class HighlightCutoffEffect : public Effect {
public:
HighlightCutoffEffect();
virtual std::string effect_type_id() const { return "HighlightCutoffEffect"; }
std::string output_fragment_shader();
virtual AlphaHandling alpha_handling() const { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
virtual bool one_to_one_sampling() const { return true; }
private:
float cutoff;
};
} // namespace movit
#endif // !defined(_MOVIT_GLOW_EFFECT_H)
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