+ /** Set exposure adjustment in EV units. Positive values brighten the
+ image, negative values darken it. Zero is neutral. */
+ void set_exposure_adjust(float);
+
+ /** Sets the exponent of the */
+ void set_brightness_response(float);
+
+ /** Sets the gamma value used for mapping output colors. Allowed range is
+ from 0.1 to 10. */
+ void set_gamma(float);
+
+ /** Sets output mapping to sRGB. This is almost, but not exactly equivalent
+ to set_gamma(2.2). */
+ void set_srgb();