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Diffstat (limited to 'src/blueshift_quartz_c.c')
| -rw-r--r-- | src/blueshift_quartz_c.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/src/blueshift_quartz_c.c b/src/blueshift_quartz_c.c deleted file mode 100644 index 94d1291..0000000 --- a/src/blueshift_quartz_c.c +++ /dev/null @@ -1,255 +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 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ -#include "blueshift_quartz_c.h" - - - -/** - * The number of CRTC:s on the system - */ -static uint32_t crtc_count = 0; - -/** - * The CRTC:s on the system - */ -static CGDirectDisplayID* crtcs = NULL; - -/** - */ -static uint32_t* gamma_sizes = NULL; - - - -/** - * Start stage of colour curve control - * - * @return Zero on success - */ -int blueshift_quartz_open(void) -{ - uint32_t cap = 4; - uint32_t i; - CGError r; - - crtcs = malloc((size_t)cap * sizeof(CGDirectDisplayID)); - if (crtcs == NULL) - { - perror("malloc"); - return -1; - } - - for (;;) - { - r = CGGetOnlineDisplayList(cap, crtcs, &crtc_count); - if (r != kCGErrorSuccess) - { - free(crtcs); - crtcs = NULL; - close_fake_quartz(); - } - if (crtc_count == cap) - { - cap <<= 1; - if (cap == 0) /* We could also test ~0, but it is still too many. */ - { - fprintf(stderr, "An impossible number of CRTC:s are available according to Quartz\n"); - free(crtcs); - close_fake_quartz(); - return -1; - } - crtcs = realloc(crtcs, (size_t)cap * sizeof(CGDirectDisplayID)); - if (crtcs == NULL) - { - perror("realloc"); - close_fake_quartz(); - return -1; - } - } - else - break; - } - - if (crtc_count > 0) - { - gamma_sizes = malloc((size_t)crtc_count * sizeof(uint32_t)); - if (gamma_sizes == NULL) - { - perror("malloc"); - free(crtcs); - close_fake_quartz(); - return -1; - } - for (i = 0; i < crtc_count; i++) - { - gamma_sizes[i] = CGDisplayGammaTableCapacity(crtcs[i]); - if (gamma_sizes[i] < 2) - { - fprintf(stderr, "Quartz reported impossibly small gamma ramps.\n"); - free(gamma_sizes); - free(crtcs); - close_fake_quartz(); - return -1; - } - } - } - - return 0; -} - - -/** - * Get the number of CRTC:s on the system - * - * @return The number of CRTC:s on the system - */ -int blueshift_quartz_crtc_count(void) -{ - return (int)crtc_count; -} - - -/** - * Gets the current colour curves - * - * @param use_crtc The CRTC to use - * @return {the size of the each curve, *the red curve, - * *the green curve, *the blue curve}, - * needs to be free:d. `NULL` on error. - */ -uint16_t* blueshift_quartz_read(int use_crtc) -{ - if ((use_crtc < 0) || (use_crtc >= (int)crtc_count)) - { - fprintf(stderr, "CRTC %i does not exist\n", use_crtc); - return NULL; - } - else - { - uint32_t gamma_size = gamma_sizes[use_crtc]; - uint16_t* rc = malloc((1 + 3 * (size_t)(gamma_size)) * sizeof(uint16_t)); - uint32_t i; - CGGammaValue* red; - CGGammaValue* green; - CGGammaValue* blue; - CGError r; - uint32_t _; - - if (rc == NULL) - { - perror("malloc"); - return NULL; - } - - red = malloc((3 * (size_t)gamma_size) * sizeof(CGGammaValue)); - green = red + (size_t)gamma_size; - blue = green + (size_t)gamma_size; - - if (red == NULL) - { - perror("malloc"); - free(rc); - return NULL; - } - - r = CGGetDisplayTransferByTable(crtcs[use_crtc], gamma_size, red, green, blue, &_); - if (r != kCGErrorSuccess) - { - fprintf(stderr, "Failed to get gamma ramps for CRTC %i\n", use_crtc); - free(red); - free(rc); - return 0; - } - - *rc++ = gamma_sizes[use_crtc]; - for (i = 0; i < gamma_size; i++) - { - int32_t v = red[i] * UINT16_MAX; - rc[i] = (uint16_t)(v < 0 ? 0 : v > UINT16_MAX ? UINT16_MAX : v); - } - rc += gamma_size; - for (i = 0; i < gamma_size; i++) - { - int32_t v = green[i] * UINT16_MAX; - rc[i] = (uint16_t)(v < 0 ? 0 : v > UINT16_MAX ? UINT16_MAX : v); - } - rc += gamma_size; - for (i = 0; i < gamma_size; i++) - { - int32_t v = blue[i] * UINT16_MAX; - rc[i] = (uint16_t)(v < 0 ? 0 : v > UINT16_MAX ? UINT16_MAX : v); - } - - return rc - (1 + 2 * gamma_size); - } -} - - -/** - * Apply stage of colour curve control - * - * @param use_crtc The CRTC to use, -1 for all - * @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_quartz_apply(int use_crtc, float* r_curves, float* g_curves, float* b_curves) -{ - if (use_crtc < (int)crtc_count) - { - int c = use_crtc < 0 ? 0 : use_crtc; - int n = use_crtc < 0 ? (int)crtc_count : (use_crtc + 1); - CGError r = kCGErrorSuccess; - - for (; c < n; c++) - { - r = CGSetDisplayTransferByTable(crtcs[c], gamma_sizes[c], r_curves, g_curves, b_curves); - if (r != kCGErrorSuccess) - { - fprintf(stderr, "Failed to set gamma ramps for CRTC %i\n", c); - break; - } - } - return r != kCGErrorSuccess; - } - fprintf(stderr, "CRTC %i does not exist\n", use_crtc); - return -1; -} - - -/** - * Resource freeing stage of colour curve control - */ -void blueshift_quartz_close(void) -{ - if (crtcs != NULL) - free(crtcs); - if (gamma_sizes != NULL) - free(gamma_sizes); - close_fake_quartz(); -} - - -/** - * Restore all gamma curves (on each and every CRTC on the system) - * to the settings on ColorSync - */ -void blueshift_quartz_restore(void) -{ - CGDisplayRestoreColorSyncSettings(); -} - |