/usr/include/movit/gamma_expansion_effect.h is in libmovit-dev 1.1.2-1.
This file is owned by root:root, with mode 0o644.
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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 | #ifndef _MOVIT_GAMMA_EXPANSION_EFFECT_H
#define _MOVIT_GAMMA_EXPANSION_EFFECT_H 1
// An effect to convert the given gamma curve into linear light,
// typically inserted by the framework automatically at the beginning
// of the processing chain.
//
// Currently supports sRGB, Rec. 601/709 and Rec. 2020 (10- and 12-bit).
// Note that Movit's internal formats generally do not have enough accuracy
// for 12-bit input or output.
#include <epoxy/gl.h>
#include <string>
#include "effect.h"
#include "image_format.h"
namespace movit {
class GammaExpansionEffect : public Effect {
private:
// Should not be instantiated by end users.
GammaExpansionEffect();
friend class EffectChain;
public:
virtual std::string effect_type_id() const { return "GammaExpansionEffect"; }
std::string output_fragment_shader();
virtual void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
virtual bool needs_linear_light() const { return false; }
virtual bool needs_srgb_primaries() const { return false; }
// Actually processes its input in a nonlinear fashion,
// but does not touch alpha, and we are a special case anyway.
virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
private:
GammaCurve source_curve;
};
} // namespace movit
#endif // !defined(_MOVIT_GAMMA_EXPANSION_EFFECT_H)
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