/usr/include/movit/colorspace_conversion_effect.h is in libmovit-dev 1.4.0-1.
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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 | #ifndef _MOVIT_COLORSPACE_CONVERSION_EFFECT_H
#define _MOVIT_COLORSPACE_CONVERSION_EFFECT_H 1
// An effect to convert between different color spaces.
// Can convert freely between sRGB/Rec. 709 and the two different Rec. 601
// color spaces (which thankfully have the same white point).
//
// We don't do any fancy gamut mapping or similar; colors that are out-of-gamut
// will simply stay out-of-gamut, and probably clip in the output stage.
#include <Eigen/Core>
#include <string>
#include "effect.h"
#include "image_format.h"
namespace movit {
class ColorspaceConversionEffect : public Effect {
private:
// Should not be instantiated by end users.
ColorspaceConversionEffect();
friend class EffectChain;
public:
virtual std::string effect_type_id() const { return "ColorspaceConversionEffect"; }
std::string output_fragment_shader();
virtual bool needs_srgb_primaries() const { return false; }
virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
virtual bool one_to_one_sampling() const { return true; }
// Get a conversion matrix from the given color space to XYZ.
static Eigen::Matrix3d get_xyz_matrix(Colorspace space);
private:
Colorspace source_space, destination_space;
};
} // namespace movit
#endif // !defined(_MOVIT_COLORSPACE_CONVERSION_EFFECT_H)
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