From 65d44d690b8bcbb3ae279b014da94881a13a0352 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 15 Feb 2014 22:35:39 +0100 Subject: doc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- 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_; -- cgit v1.2.3-70-g09d2