From 65d44d690b8bcbb3ae279b014da94881a13a0352 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@operamail.com>
Date: Sat, 15 Feb 2014 22:35:39 +0100
Subject: doc
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Signed-off-by: Mattias Andrée <maandree@operamail.com>
---
src/blueshift_randr.c | 58 ++++++++++++++++++++++++++++++++++++++++++---------
1 file changed, 48 insertions(+), 10 deletions(-)
(limited to 'src')
diff --git a/src/blueshift_randr.c b/src/blueshift_randr.c
index 0f5c62c..6dcadb8 100644
--- a/src/blueshift_randr.c
+++ b/src/blueshift_randr.c
@@ -40,12 +40,36 @@
*/
typedef struct blueshift_randr_crtc
{
+ /**
+ * Size of colour curves on the X-axis
+ */
unsigned int curve_size;
+
+ /**
+ * This entity holds the allocation to the colour curves
+ */
xcb_randr_get_crtc_gamma_reply_t* gamma_get_reply;
- uint16_t* r_gamma;
- uint16_t* g_gamma;
- uint16_t* b_gamma;
+
+ /**
+ * Red colour curve
+ */
+ uint16_t* r_curve;
+
+ /**
+ * Green colour curve
+ */
+ uint16_t* g_curve;
+
+ /**
+ * Blue colour curve
+ */
+ uint16_t* b_curve;
+
+ /**
+ * CRT controller
+ */
xcb_randr_crtc_t* crtc;
+
} blueshift_randr_crtc_t;
@@ -65,6 +89,11 @@ static blueshift_randr_crtc_t* crtcs_end;
+/**
+ * Start stage of colour curve control
+ *
+ * @return Zero on success
+ */
int blueshift_randr_open(void)
{
blueshift_randr_crtc_t* crtcs_;
@@ -166,9 +195,9 @@ int blueshift_randr_open(void)
return 1;
}
- crtcs_->r_gamma = xcb_randr_get_crtc_gamma_red(crtcs_->gamma_get_reply);
- crtcs_->g_gamma = xcb_randr_get_crtc_gamma_green(crtcs_->gamma_get_reply);
- crtcs_->b_gamma = xcb_randr_get_crtc_gamma_blue(crtcs_->gamma_get_reply);
+ crtcs_->r_curve = xcb_randr_get_crtc_gamma_red(crtcs_->gamma_get_reply);
+ crtcs_->g_curve = xcb_randr_get_crtc_gamma_green(crtcs_->gamma_get_reply);
+ crtcs_->b_curve = xcb_randr_get_crtc_gamma_blue(crtcs_->gamma_get_reply);
}
@@ -176,6 +205,12 @@ int blueshift_randr_open(void)
}
+/**
+ * Apply stage of colour curve control
+ *
+ * @param use_crtcs Mask of CRTC:s to use
+ * @return Zero on success
+ */
int blueshift_randr_apply(uint64_t use_crtcs)
{
blueshift_randr_crtc_t* crtcs_ = crtcs;
@@ -198,16 +233,16 @@ int blueshift_randr_apply(uint64_t use_crtcs)
for (i = 0; i < crtcs_->curve_size; i++)
{
- *(crtcs_->r_gamma + i) = (1 << 16) - 1 - *(crtcs_->r_gamma + i);
- *(crtcs_->g_gamma + i) = (1 << 16) - 1 - *(crtcs_->g_gamma + i);
- *(crtcs_->b_gamma + i) = (1 << 16) - 1 - *(crtcs_->b_gamma + 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);
}
/* Apply curves */
gamma_set_cookie = xcb_randr_set_crtc_gamma_checked(connection, *(crtcs_->crtc), crtcs_->curve_size,
- crtcs_->r_gamma, crtcs_->g_gamma, crtcs_->b_gamma);
+ crtcs_->r_curve, crtcs_->g_curve, crtcs_->b_curve);
error = xcb_request_check(connection, gamma_set_cookie);
if (error)
@@ -228,6 +263,9 @@ int blueshift_randr_apply(uint64_t use_crtcs)
}
+/**
+ * Resource freeing stage of colour curve control
+ */
void blueshift_randr_close(void)
{
blueshift_randr_crtc_t* crtcs_;
--
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