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authorMattias Andrée <maandree@operamail.com>2014-05-21 07:43:09 +0200
committerMattias Andrée <maandree@operamail.com>2014-05-21 07:43:09 +0200
commit35444bf35a56805029a090a408d5a51464803cae (patch)
tree4bd2c51ebfba4ab4a7ef6e47f034941146de9afb /src/libgamma-facade.h
parentreorder functions (diff)
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m + add gamma sets with mapping function rather than lookup tables
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to '')
-rw-r--r--src/libgamma-facade.h120
1 files changed, 120 insertions, 0 deletions
diff --git a/src/libgamma-facade.h b/src/libgamma-facade.h
index 8aae48f..a8e7636 100644
--- a/src/libgamma-facade.h
+++ b/src/libgamma-facade.h
@@ -25,6 +25,50 @@
#include <stdint.h>
+
+/**
+ * Mapping function from [0, 1] float encoding value to [0, 2¹⁶ − 1] integer output value
+ *
+ * @param encoding [0, 1] float encoding value
+ * @return [0, 2¹⁶ − 1] integer output value
+ */
+typedef uint16_t libgamma_gamma_ramps_fun(float encoding);
+
+/**
+ * Mapping function from [0, 1] float encoding value to [0, 2³² − 1] integer output value
+ *
+ * @param encoding [0, 1] float encoding value
+ * @return [0, 2³² − 1] integer output value
+ */
+typedef uint32_t libgamma_gamma_ramps32_fun(float encoding);
+
+/**
+ * Mapping function from [0, 1] float encoding value to [0, 2⁶⁴ − 1] integer output value
+ *
+ * @param encoding [0, 1] float encoding value
+ * @return [0, 2⁶⁴ − 1] integer output value
+ */
+typedef uint64_t libgamma_gamma_ramps64_fun(float encoding);
+
+/**
+ * Mapping function from [0, 1] float encoding value to [0, 1] float output value
+ *
+ * @param encoding [0, 1] float encoding value
+ * @return [0, 1] float output value
+ */
+typedef float libgamma_gamma_rampsf_fun(float encoding);
+
+/**
+ * Mapping function from [0, 1] double precision float encoding
+ * value to [0, 1] double precision float output value
+ *
+ * @param encoding [0, 1] float encoding value
+ * @return [0, 1] float output value
+ */
+typedef double libgamma_gamma_rampsd_fun(double encoding);
+
+
+
/**
* Return the capabilities of an adjustment method
*
@@ -354,5 +398,81 @@ int libgamma_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this,
libgamma_gamma_rampsd_t ramps);
+/**
+ * Set the gamma ramps for a CRTC, 16-bit gamma-depth function version
+ *
+ * Note that this will probably involve the library allocating temporary data
+ *
+ * @param this The CRTC state
+ * @parma 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_ramps_f(libgamma_crtc_state_t* restrict this,
+ libgamma_gamma_ramps_fun* red_function,
+ libgamma_gamma_ramps_fun* green_function,
+ libgamma_gamma_ramps_fun* blue_function);
+
+/**
+ * Set the gamma ramps for a CRTC, 32-bit gamma-depth function version
+ *
+ * Note that this will probably involve the library allocating temporary data
+ *
+ * @param this The CRTC state
+ * @parma 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_ramps32_f(libgamma_crtc_state_t* restrict this,
+ libgamma_gamma_ramps32_fun* red_function,
+ libgamma_gamma_ramps32_fun* green_function,
+ libgamma_gamma_ramps32_fun* blue_function);
+
+/**
+ * Set the gamma ramps for a CRTC, 64-bit gamma-depth function version
+ *
+ * Note that this will probably involve the library allocating temporary data
+ *
+ * @param this The CRTC state
+ * @parma 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_ramps64_f(libgamma_crtc_state_t* restrict this,
+ libgamma_gamma_ramps64_fun* red_function,
+ libgamma_gamma_ramps64_fun* green_function,
+ libgamma_gamma_ramps64_fun* blue_function);
+
+/**
+ * Set the gamma ramps for a CRTC, `float` function version
+ *
+ * Note that this will probably involve the library allocating temporary data
+ *
+ * @param this The CRTC state
+ * @parma 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_rampsf_f(libgamma_crtc_state_t* restrict this,
+ libgamma_gamma_rampsf_fun* red_function,
+ libgamma_gamma_rampsf_fun* green_function,
+ libgamma_gamma_rampsf_fun* blue_function);
+
+/**
+ * Set the gamma ramps for a CRTC, `double` function version
+ *
+ * Note that this will probably involve the library allocating temporary data
+ *
+ * @param this The CRTC state
+ * @parma 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_rampsd_f(libgamma_crtc_state_t* restrict this,
+ libgamma_gamma_rampsd_fun* red_function,
+ libgamma_gamma_rampsd_fun* green_function,
+ libgamma_gamma_rampsd_fun* blue_function);
+
+
#endif