]> git.sesse.net Git - movit/blob - gamma_expansion_effect.h
When correcting for white balance, move the D65 normalization into compute_lms_scalin...
[movit] / gamma_expansion_effect.h
1 #ifndef _GAMMA_EXPANSION_EFFECT_H 
2 #define _GAMMA_EXPANSION_EFFECT_H 1
3
4 // An effect to convert the given gamma curve into linear light,
5 // typically inserted by the framework automatically at the beginning
6 // of the processing chain.
7 //
8 // Currently supports sRGB and Rec. 601/709.
9
10 #include "effect.h"
11 #include "effect_chain.h"
12
13 #define EXPANSION_CURVE_SIZE 256
14
15 class GammaExpansionEffect : public Effect {
16 public:
17         GammaExpansionEffect();
18         virtual std::string effect_type_id() const { return "GammaExpansionEffect"; }
19         std::string output_fragment_shader();
20
21         virtual bool needs_linear_light() const { return false; }
22         virtual bool needs_srgb_primaries() const { return false; }
23
24 private:
25         GammaCurve source_curve;
26         float expansion_curve[EXPANSION_CURVE_SIZE];
27 };
28
29 #endif // !defined(_GAMMA_EXPANSION_EFFECT_H)