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-rw-r--r--src/blueshift_randr.c312
1 files changed, 0 insertions, 312 deletions
diff --git a/src/blueshift_randr.c b/src/blueshift_randr.c
deleted file mode 100644
index 98ba2a3..0000000
--- a/src/blueshift_randr.c
+++ /dev/null
@@ -1,312 +0,0 @@
-/**
- * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <inttypes.h>
-
-#include <xcb/xcb.h>
-#include <xcb/randr.h>
-
-
-
-/**
- * The major version of RANDR the program expects
- */
-#define RANDR_VERSION_MAJOR 1U
-
-/**
- * The minor version of RANDR the program expects
- */
-#define RANDR_VERSION_MINOR 3U
-
-
-
-/**
- * Data structure for CRTC caches
- */
-typedef struct blueshift_randr_crtc
-{
- /**
- * Size of colour curves on the X-axis
- */
- unsigned int curve_size;
-
- /**
- * CRT controller
- */
- xcb_randr_crtc_t* crtc;
-
-} blueshift_randr_crtc_t;
-
-
-
-/**
- * Connection to the X server
- */
-static xcb_connection_t* connection;
-
-/**
- * Used to store errors in
- */
-static xcb_generic_error_t* error;
-
-/**
- * Screen resources
- */
-static xcb_randr_get_screen_resources_current_reply_t* res_reply;
-
-/**
- * The first CRTC
- */
-static blueshift_randr_crtc_t* crtcs;
-
-/**
- * The CRTC after the last CRTC
- */
-static blueshift_randr_crtc_t* crtcs_end;
-
-/**
- * The red colour curve
- */
-static uint16_t* r_curve;
-
-/**
- * The green colour curve
- */
-static uint16_t* g_curve;
-
-/**
- * The blue colour curve
- */
-static uint16_t* b_curve;
-
-
-
-/**
- * Start stage of colour curve control
- *
- * @param use_screen The screen to use
- * @return Zero on success
- */
-int blueshift_randr_open(int use_screen)
-{
- blueshift_randr_crtc_t* crtcs_;
-
- xcb_randr_query_version_cookie_t version_cookie;
- xcb_randr_query_version_reply_t* randr_version;
- const xcb_setup_t* setup;
- xcb_screen_iterator_t iter;
- xcb_screen_t* screen;
- xcb_randr_get_screen_resources_current_cookie_t res_cookie;
- unsigned int crtc_count;
- xcb_randr_get_crtc_gamma_size_cookie_t gamma_size_cookie;
- xcb_randr_get_crtc_gamma_size_reply_t* gamma_size_reply;
- xcb_randr_get_crtc_gamma_cookie_t gamma_get_cookie;
- xcb_randr_get_crtc_gamma_reply_t* gamma_get_reply;
-
-
-
- /* Get X connection */
-
- connection = xcb_connect(NULL, &use_screen);
-
-
- /* Check RANDR protocol version */
-
- version_cookie = xcb_randr_query_version(connection, RANDR_VERSION_MAJOR, RANDR_VERSION_MINOR);
- randr_version = xcb_randr_query_version_reply(connection, version_cookie, &error);
-
- if (error || (randr_version == NULL))
- {
- fprintf(stderr, "RANDR version query returned %i", error ? error->error_code : -1);
- xcb_disconnect(connection);
- return 1;
- }
-
- if (randr_version->major_version != RANDR_VERSION_MAJOR || randr_version->minor_version < RANDR_VERSION_MINOR)
- {
- fprintf(stderr, "Unsupported RANDR version, got %u.%u, expected %u.%u\n",
- randr_version->major_version, randr_version->minor_version,
- RANDR_VERSION_MAJOR, RANDR_VERSION_MINOR);
- free(randr_version);
- xcb_disconnect(connection);
- return 1;
- }
-
- free(randr_version);
-
-
- /* Get X resources */
-
- setup = xcb_get_setup(connection);
- iter = xcb_setup_roots_iterator(setup);
- screen = iter.data;
-
- res_cookie = xcb_randr_get_screen_resources_current(connection, screen->root);
- res_reply = xcb_randr_get_screen_resources_current_reply(connection, res_cookie, &error);
-
- if (error)
- {
- fprintf(stderr, "RANDR screen resource query returned %i\n", error->error_code);
- xcb_disconnect(connection);
- return 1;
- }
-
-
- /* Get CRTC:s */
-
- crtc_count = res_reply->num_crtcs;
- crtcs = malloc(crtc_count * sizeof(blueshift_randr_crtc_t));
- crtcs->crtc = xcb_randr_get_screen_resources_current_crtcs(res_reply);
- crtcs_end = crtcs + crtc_count;
-
-
- /* Prepare CRTC:s */
-
- for (crtcs_ = crtcs; crtcs_ != crtcs_end; crtcs_++)
- {
- /* Set CRTC */
-
- if (crtcs_ != crtcs)
- crtcs_->crtc = (crtcs_ - 1)->crtc + 1;
-
-
- /* Get curve X-axis size */
-
- gamma_size_cookie = xcb_randr_get_crtc_gamma_size(connection, *(crtcs_->crtc));
- gamma_size_reply = xcb_randr_get_crtc_gamma_size_reply(connection, gamma_size_cookie, &error);
-
- if (error)
- {
- fprintf(stderr, "RANDR CRTC gamma size query returned %i\n", error->error_code);
- xcb_disconnect(connection);
- return 1;
- }
-
- crtcs_->curve_size = gamma_size_reply->size;
- free(gamma_size_reply);
-
-
- /* Acquire curve control */
-
- gamma_get_cookie = xcb_randr_get_crtc_gamma(connection, *(crtcs_->crtc));
- gamma_get_reply = xcb_randr_get_crtc_gamma_reply(connection, gamma_get_cookie, &error);
-
- if (error)
- {
- fprintf(stderr, "RANDR CRTC gamma query returned %i\n", error->error_code);
- xcb_disconnect(connection);
- return 1;
- }
-
- free(gamma_get_reply);
- }
-
-
- /* Allocate curves */
-
- r_curve = malloc(3 * 256 * sizeof(uint16_t));
- g_curve = r_curve + 256;
- b_curve = g_curve + 256;
-
- return 0;
-}
-
-
-/**
- * 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, uint16_t* r_curve, uint16_t* g_curve, uint16_t* b_curve)
-{
- blueshift_randr_crtc_t* crtcs_ = crtcs;
-
- xcb_void_cookie_t gamma_set_cookie;
-
-
- /* Use CRTC:s */
-
- while (crtcs_ != crtcs_end)
- {
- /* Check whether we should use the CRTC */
-
- if ((use_crtcs & 1) == 0)
- goto next_crtc;
-
-
- /* Apply curves */
-
- gamma_set_cookie = xcb_randr_set_crtc_gamma_checked(connection, *(crtcs_->crtc), crtcs_->curve_size,
- r_curve, g_curve, b_curve);
- error = xcb_request_check(connection, gamma_set_cookie);
-
- if (error)
- {
- fprintf(stderr, "RANDR CRTC control returned %i\n", error->error_code);
- return 1;
- }
-
-
- /* Next CRTC */
-
- next_crtc:
- crtcs_++;
- use_crtcs >>= 1;
- }
-
- return 0;
-}
-
-
-/**
- * Resource freeing stage of colour curve control
- */
-void blueshift_randr_close(void)
-{
- /* Free remaining resources */
-
- free(r_curve);
- free(crtcs);
- free(res_reply);
- xcb_disconnect(connection);
-}
-
-
-
-int main(int argc, char** argv)
-{
- long i;
-
- (void) argc;
- (void) argv;
-
- if (blueshift_randr_open(0))
- 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);
-
- i = blueshift_randr_apply(~0, r_curve, g_curve, b_curve);
- blueshift_randr_close();
- return i;
-}
-
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