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-rw-r--r--src/blueshift_randr.c33
1 files changed, 27 insertions, 6 deletions
diff --git a/src/blueshift_randr.c b/src/blueshift_randr.c
index 1c78d72..f2027df 100644
--- a/src/blueshift_randr.c
+++ b/src/blueshift_randr.c
@@ -229,9 +229,12 @@ int blueshift_randr_open(void)
* Apply stage of colour curve control
*
* @param use_crtcs Mask of CRTC:s to use
+ * @param r_curve The red colour curve
+ * @param g_curve The green colour curve
+ * @param b_curve The blue colour curve
* @return Zero on success
*/
-int blueshift_randr_apply(uint64_t use_crtcs)
+int blueshift_randr_apply(uint64_t use_crtcs, uint16_t* r_curve, uint16_t* g_curve, uint16_t* b_curve)
{
blueshift_randr_crtc_t* crtcs_ = crtcs;
@@ -253,9 +256,9 @@ int blueshift_randr_apply(uint64_t use_crtcs)
for (i = 0; i < crtcs_->curve_size; i++)
{
- *(crtcs_->r_curve + i) = (1 << 16) - 1 - *(crtcs_->r_curve + i);
- *(crtcs_->g_curve + i) = (1 << 16) - 1 - *(crtcs_->g_curve + i);
- *(crtcs_->b_curve + i) = (1 << 16) - 1 - *(crtcs_->b_curve + i);
+ *(crtcs_->r_curve + i) = *(r_curve + i);
+ *(crtcs_->g_curve + i) = *(g_curve + i);
+ *(crtcs_->b_curve + i) = *(b_curve + i);
}
@@ -308,13 +311,31 @@ void blueshift_randr_close(void)
int main(int argc, char** argv)
{
+ uint16_t* r_curve = malloc(3 * 256 * sizeof(uint16_t));
+ uint16_t* g_curve = r_curve + 256;
+ uint16_t* b_curve = g_curve + 256;
+ long i;
+
(void) argc;
(void) argv;
- if (blueshift_randr_open() || blueshift_randr_apply(~0))
- return 1;
+ if (blueshift_randr_open())
+ {
+ free(r_curve);
+ return 1;
+ }
+
+ for (i = 0; i < 256; i++)
+ r_curve[i] = g_curve[i] = b_curve[i] = (int)((float)i / 255.f * (float)((1 << 16) - 1) + 0.f);
+
+ if (blueshift_randr_apply(~0, r_curve, g_curve, b_curve))
+ {
+ free(r_curve);
+ return 1;
+ }
blueshift_randr_close();
+ free(r_curve);
return 0;
}