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author | Mattias Andrée <maandree@kth.se> | 2021-03-05 18:23:13 +0100 |
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committer | Mattias Andrée <maandree@kth.se> | 2021-03-05 18:33:49 +0100 |
commit | f52513b09580c1533e6c48a4162d3d5f61f3b081 (patch) | |
tree | 141d0974a777f4ec5b51daed9879a2cb0d781505 /libgamma_quartz_cg_crtc_set_gamma_rampsf.c | |
parent | Split source files, merge public header files, eliminite use gpp, rewrite makefile (diff) | |
download | libgamma-f52513b09580c1533e6c48a4162d3d5f61f3b081.tar.gz libgamma-f52513b09580c1533e6c48a4162d3d5f61f3b081.tar.bz2 libgamma-f52513b09580c1533e6c48a4162d3d5f61f3b081.tar.xz |
misc
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to '')
-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; +} |