diff options
Diffstat (limited to '')
| -rw-r--r-- | libgamma_dummy_internal_crtc_restore_forced.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libgamma_dummy_internal_crtc_restore_forced.c b/libgamma_dummy_internal_crtc_restore_forced.c new file mode 100644 index 0000000..c05f9bf --- /dev/null +++ b/libgamma_dummy_internal_crtc_restore_forced.c @@ -0,0 +1,44 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * Restore the gamma ramps for a CRTC to the system settings for that CRTC + * and ignore the method's capabilities + * + * @param this The CRTC data + * @return Zero on success, otherwise (negative) the value of an + * error identifier provided by this library + */ +int +libgamma_dummy_internal_crtc_restore_forced(libgamma_dummy_crtc_t *restrict data) +{ + size_t rn = data->info. red_gamma_size; + size_t gn = data->info.green_gamma_size; + size_t bn = data->info. blue_gamma_size; + size_t i; + + if (!data->gamma_red) + return 0; + +#define __reset_ramps(TYPE, MAX)\ + do {\ + TYPE *red = data->gamma_red;\ + TYPE *green = data->gamma_green;\ + TYPE *blue = data->gamma_blue;\ + for (i = 0; i < rn; i++) red [i] = (TYPE)((double)(MAX) * ((double)i / (double)(rn - 1)));\ + for (i = 0; i < gn; i++) green[i] = (TYPE)((double)(MAX) * ((double)i / (double)(gn - 1)));\ + for (i = 0; i < bn; i++) blue [i] = (TYPE)((double)(MAX) * ((double)i / (double)(bn - 1)));\ + } while (0) + + if (data->info.gamma_depth == 8) __reset_ramps(uint8_t, INT8_MAX); + else if (data->info.gamma_depth == 16) __reset_ramps(uint16_t, INT16_MAX); + else if (data->info.gamma_depth == 32) __reset_ramps(uint32_t, INT32_MAX); + else if (data->info.gamma_depth == 64) __reset_ramps(uint64_t, INT64_MAX); + else if (data->info.gamma_depth == -1) __reset_ramps(float, 1); + else __reset_ramps(double, 1); + +#undef __reset_ramps + + return 0; +} |