diff options
Diffstat (limited to 'src/lib/libgamma-facade.h')
| -rw-r--r-- | src/lib/libgamma-facade.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/lib/libgamma-facade.h b/src/lib/libgamma-facade.h index cfcf085..92a2b42 100644 --- a/src/lib/libgamma-facade.h +++ b/src/lib/libgamma-facade.h @@ -31,6 +31,14 @@ /** + * Mapping function from [0, 1] float encoding value to [0, 2⁸ − 1] integer output value. + * + * @param encoding [0, 1] float encoding value. + * @return [0, 2⁸ − 1] integer output value. + */ +typedef uint8_t libgamma_gamma_ramps8_fun(float encoding); + +/** * Mapping function from [0, 1] float encoding value to [0, 2¹⁶ − 1] integer output value. * * @param encoding [0, 1] float encoding value. @@ -316,6 +324,29 @@ unsigned char* libgamma_unhex_edid(const char* restrict edid); /** + * Get current the gamma ramps for a CRTC, 8-bit gamma-depth version. + * + * @param this The CRTC state. + * @param ramps The gamma ramps to fill with the current values + * @return Zero on success, otherwise (negative) the value of an + * error identifier provided by this library. + */ +int libgamma_crtc_get_gamma_ramps8(libgamma_crtc_state_t* restrict this, + libgamma_gamma_ramps8_t* restrict ramps); + +/** + * Set the gamma ramps for a CRTC, 8-bit gamma-depth version. + * + * @param this The CRTC state. + * @param ramps The gamma ramps to apply. + * @return Zero on success, otherwise (negative) the value of an + * error identifier provided by this library. + */ +int libgamma_crtc_set_gamma_ramps8(libgamma_crtc_state_t* restrict this, + libgamma_gamma_ramps8_t ramps) __attribute__((hot)); + + +/** * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version. * * @param this The CRTC state. @@ -431,6 +462,23 @@ int libgamma_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this, /** + * Set the gamma ramps for a CRTC, 8-bit gamma-depth function version. + * + * Note that this will probably involve the library allocating temporary data. + * + * @param this The CRTC state. + * @param red_function The function that generates the the gamma ramp for the red channel. + * @param green_function The function that generates the the gamma ramp for the green channel. + * @param blue_function The function that generates the the gamma ramp for the blue channel. + * @return Zero on success, otherwise (negative) the value of an + * error identifier provided by this library. + */ +int libgamma_crtc_set_gamma_ramps8_f(libgamma_crtc_state_t* restrict this, + libgamma_gamma_ramps8_fun* red_function, + libgamma_gamma_ramps8_fun* green_function, + libgamma_gamma_ramps8_fun* blue_function) __attribute__((cold)); + +/** * Set the gamma ramps for a CRTC, 16-bit gamma-depth function version. * * Note that this will probably involve the library allocating temporary data. |