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Diffstat (limited to 'src/blueshift_w32gdi_c.c')
| -rw-r--r-- | src/blueshift_w32gdi_c.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/src/blueshift_w32gdi_c.c b/src/blueshift_w32gdi_c.c deleted file mode 100644 index d304b25..0000000 --- a/src/blueshift_w32gdi_c.c +++ /dev/null @@ -1,181 +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_w32gdi_c.h" - - - -/** - * The number of CRTC:s on the system - */ -static int crtc_count; - -/** - * The device contexts for each CRTC - */ -static HDC* crtcs; - - - -/** - * Start stage of colour curve control - * - * @return Zero on success - */ -int blueshift_w32gdi_open(void) -{ - int c; - HDC hDC; - DISPLAY_DEVICE display; - display.cb = sizeof(DISPLAY_DEVICE); - - crtc_count = 0; - while (EnumDisplayDevices(NULL, crtc_count, &display, 0)) - crtc_count++; - - if (crtc_count == 0) - { - crtcs = NULL; - return 0; - } - - crtcs = malloc(crtc_count * sizeof(HDC)); - if (crtcs == NULL) - { - fprintf(stderr, "Out of memory\n"); - return 1; - } - - for (c = 0; c < crtc_count; c++) - { - /* Open device context */ - if (EnumDisplayDevices(NULL, c, &display, 0) == FALSE) - { - fprintf(stderr, "Cannot find display, are you unplugging stuff?\n"); - crtc_count = c; - return 1; - } - if (!(display.StateFlags & DISPLAY_DEVICE_ACTIVE)) - { - fprintf(stderr, "Cannot to open device context, it is not active\n"); - crtc_count = c; - return 1; - } - hDC = *(crtcs + c) = CreateDC(TEXT("DISPLAY"), display.DeviceName, NULL, NULL); - if (hDC == NULL) - { - fprintf(stderr, "Unable to open device context\n"); - crtc_count = c; - return 1; - } - - /* Check support for gamma ramps */ - if (GetDeviceCaps(hDC, COLORMGMTCAPS) != CM_GAMMA_RAMP) - { - fprintf(stderr, "CRTC %i does not support gamma ramps\n", c); - ReleaseDC(NULL, hDC); - crtc_count = c; - return 1; - } - } - - return 0; -} - - -/** - * Get the number of CRTC:s on the system - * - * @return The number of CRTC:s on the system - */ -int blueshift_w32gdi_crtc_count(void) -{ - return 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_w32gdi_read(int use_crtc) -{ - uint16_t* rc = NULL; - if ((use_crtc < 0) || (use_crtc >= crtc_count)) - fprintf(stderr, "CRTC %i does not exist\n", use_crtc); - else - { - rc = malloc((1 + 3 * GAMMA_RAMP_SIZE) * sizeof(uint16_t)); - if (rc == NULL) - fprintf(stderr, "Out of memory\n"); - else - { - *rc = GAMMA_RAMP_SIZE; - if (GetDeviceGammaRamp(*(crtcs + use_crtc), rc + 1) == FALSE) - { - fprintf(stderr, "Unable to read current gamma ramps from CRTC %i\n", use_crtc); - free(rc); - rc = NULL; - } - } - } - return rc; -} - - -/** - * Apply stage of colour curve control - * - * @param use_crtc The CRTC to use, -1 for all - * @param rgb_curve The concatenation of the red, the green and the blue colour curves - * @return Zero on success - */ -int blueshift_w32gdi_apply(int use_crtc, uint16_t* rgb_curves) -{ - int r = 1; - if (use_crtc < crtc_count) - { - int c = use_crtc < 0 ? 0 : use_crtc; - int n = use_crtc < 0 ? crtc_count : (use_crtc + 1); - for (; c < n; c++) - if (!(r = SetDeviceGammaRamp(*(crtcs + c), rgb_curves))) - { - fprintf(stderr, "Unable to set gamma ramps\n"); - break; - } - } - else - fprintf(stderr, "CRTC %i does not exist\n", use_crtc); - return !r; -} - - -/** - * Resource freeing stage of colour curve control - */ -void blueshift_w32gdi_close(void) -{ - int c; - for (c = 0; c < crtc_count; c++) - ReleaseDC(NULL, *(crtcs + c)); - if (crtcs != NULL) - free(crtcs); -} - |