diff options
Diffstat (limited to 'libgamma_quartz_cg_crtc_set_gamma_rampsf.c')
| -rw-r--r-- | libgamma_quartz_cg_crtc_set_gamma_rampsf.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/libgamma_quartz_cg_crtc_set_gamma_rampsf.c b/libgamma_quartz_cg_crtc_set_gamma_rampsf.c new file mode 100644 index 0000000..5cde1eb --- /dev/null +++ b/libgamma_quartz_cg_crtc_set_gamma_rampsf.c @@ -0,0 +1,27 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * Set the gamma ramps for a CRTC, `float` 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_quartz_cg_crtc_set_gamma_rampsf(libgamma_crtc_state_t *restrict this, const libgamma_gamma_rampsf_t *restrict ramps) +{ + CGDirectDisplayID *restrict crtcs = this->partition->data; + CGDirectDisplayID crtc_id = crtcs[this->crtc]; + CGError r; +#ifdef DEBUG + /* Gamma ramps 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 */ + r = CGSetDisplayTransferByTable(crtc_id, (uint32_t)ramps->red_size, ramps->red, ramps->green, ramps->blue); + return r == kCGErrorSuccess ? 0 : LIBGAMMA_GAMMA_RAMP_WRITE_FAILED; +} |