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Diffstat (limited to '')
-rw-r--r-- | libgamma_x_randr_crtc_set_gamma_ramps16.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libgamma_x_randr_crtc_set_gamma_ramps16.c b/libgamma_x_randr_crtc_set_gamma_ramps16.c new file mode 100644 index 0000000..5bb9bb3 --- /dev/null +++ b/libgamma_x_randr_crtc_set_gamma_ramps16.c @@ -0,0 +1,34 @@ +/* See LICENSE file for copyright and license details. */ +#define IN_LIBGAMMA_X_RANDR +#include "common.h" + + +/** + * Set the gamma ramps for a CRTC, 16-bit gamma-depth version + * + * @param this The CRTC state + * @param ramps The gamma ramps to apply + * @return Zero on success, otherwise (negative) the value of an + * error identifier provided by this library + */ +int +libgamma_x_randr_crtc_set_gamma_ramps16(libgamma_crtc_state_t *restrict this, const libgamma_gamma_ramps16_t *ramps) +{ + xcb_connection_t *restrict connection = this->partition->site->data; + xcb_void_cookie_t cookie; + xcb_generic_error_t *restrict error; +#ifdef DEBUG + /* Gamma ramp sizes are identical but not fixed */ + if (ramps->red_size != ramps->green_size || ramps->red_size != ramps->blue_size) + return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE; +#endif + + /* Apply gamma ramps */ + cookie = xcb_randr_set_crtc_gamma_checked(connection, *(xcb_randr_crtc_t*)this->data, + (uint16_t)ramps->red_size, ramps->red, ramps->green, ramps->blue); + /* Check for errors */ + error = xcb_request_check(connection, cookie); + if (error) + return libgamma_x_randr_internal_translate_error(error->error_code, LIBGAMMA_GAMMA_RAMP_WRITE_FAILED, 0); + return 0; +} |