1 files changed, 50 insertions, 0 deletions
diff --git a/set_ramps_fun.h b/set_ramps_fun.h
new file mode 100644
index 0000000..bdd1fe8
--- /dev/null
+++ b/set_ramps_fun.h
@@ -0,0 +1,50 @@
+/* See LICENSE file for copyright and license details. */
+
+/*
+ * This file is intended to be included from
+ * libgamma_crtc_set_gamma_ramps{8,16,32,64,f,d}_f
+ */
+
+
+libgamma_crtc_information_t info;
+struct APPEND_RAMPS(libgamma_gamma_) ramps;
+size_t i, n;
+int e;
+
+/* Get the size of the gamma ramps */
+if (libgamma_get_crtc_information(&info, this, LIBGAMMA_CRTC_INFO_GAMMA_SIZE)) {
+	e = info.gamma_size_error;
+	if (e < 0)
+		return e;
+	errno = e;
+	return LIBGAMMA_ERRNO_SET;
+ }
+
+/* Copy the size of the gamma ramps and calculte the grand size */
+n  = ramps.  red_size = info.  red_gamma_size;
+n += ramps.green_size = info.green_gamma_size;
+n += ramps. blue_size = info. blue_gamma_size;
+
+/* Allocate gamma ramps */
+ramps.  red = malloc(n * sizeof(TYPE));
+ramps.green = &ramps.  red[ramps.  red_size];
+ramps. blue = &ramps.green[ramps.green_size];
+if (!ramps.red)
+	return LIBGAMMA_ERRNO_SET;
+
+/* Generate the gamma ramp for the red channel */
+for (i = 0, n = ramps.red_size; i < n; i++)
+	ramps.red[i] = red_function((float)i / (float)(n - 1));
+
+/* Generate the gamma ramp for the green channel */
+for (i = 0, n = ramps.green_size; i < n; i++)
+	ramps.green[i] = green_function((float)i / (float)(n - 1));
+
+/* Generate the gamma ramp for the blue channel */
+for (i = 0, n = ramps.blue_size; i < n; i++)
+	ramps.blue[i] = blue_function((float)i / (float)(n - 1));
+
+/* Apply the gamma ramps */
+e = APPEND_RAMPS(libgamma_crtc_set_gamma_)(this, ramps);
+free(ramps.red);
+return e;