int
vidmode_set_temperature(vidmode_state_t *state, int temp, float brightness,
float gamma[3])
{
int r;
/* Create new gamma ramps */
uint16_t *gamma_ramps = malloc(3*state->ramp_size*sizeof(uint16_t));
if (gamma_ramps == NULL) {
perror("malloc");
return -1;
}
uint16_t *gamma_r = &gamma_ramps[0*state->ramp_size];
uint16_t *gamma_g = &gamma_ramps[1*state->ramp_size];
uint16_t *gamma_b = &gamma_ramps[2*state->ramp_size];
colorramp_fill(gamma_r, gamma_g, gamma_b, state->ramp_size,
temp, brightness, gamma);
/* Set new gamma ramps */
r = XF86VidModeSetGammaRamp(state->display, state->screen_num,
state->ramp_size, gamma_r, gamma_g,
gamma_b);
if (!r) {
fprintf(stderr, _("X request failed: %s\n"),
"XF86VidModeSetGammaRamp");
free(gamma_ramps);
return -1;
}
free(gamma_ramps);
return 0;
}
static int
randr_set_temperature_for_crtc(randr_state_t *state, int crtc_num, int temp,
float brightness, float gamma[3])
{
xcb_generic_error_t *error;
if (crtc_num >= state->crtc_count || crtc_num < 0) {
fprintf(stderr, _("CRTC %d does not exist. "),
state->crtc_num);
if (state->crtc_count > 1) {
fprintf(stderr, _("Valid CRTCs are [0-%d].\n"),
state->crtc_count-1);
} else {
fprintf(stderr, _("Only CRTC 0 exists.\n"));
}
return -1;
}
xcb_randr_crtc_t crtc = state->crtcs[crtc_num].crtc;
unsigned int ramp_size = state->crtcs[crtc_num].ramp_size;
/* Create new gamma ramps */
uint16_t *gamma_ramps = malloc(3*ramp_size*sizeof(uint16_t));
if (gamma_ramps == NULL) {
perror("malloc");
return -1;
}
uint16_t *gamma_r = &gamma_ramps[0*ramp_size];
uint16_t *gamma_g = &gamma_ramps[1*ramp_size];
uint16_t *gamma_b = &gamma_ramps[2*ramp_size];
colorramp_fill(gamma_r, gamma_g, gamma_b, ramp_size,
temp, brightness, gamma);
/* Set new gamma ramps */
xcb_void_cookie_t gamma_set_cookie =
xcb_randr_set_crtc_gamma_checked(state->conn, crtc,
ramp_size, gamma_r,
gamma_g, gamma_b);
error = xcb_request_check(state->conn, gamma_set_cookie);
if (error) {
fprintf(stderr, _("`%s' returned error %d\n"),
"RANDR Set CRTC Gamma", error->error_code);
free(gamma_ramps);
return -1;
}
free(gamma_ramps);
return 0;
}
int
vidmode_set_temperature(vidmode_state_t *state,
const color_setting_t *setting)
{
int r;
/* Create new gamma ramps */
uint16_t *gamma_ramps = malloc(3*state->ramp_size*sizeof(uint16_t));
if (gamma_ramps == NULL) {
perror("malloc");
return -1;
}
uint16_t *gamma_r = &gamma_ramps[0*state->ramp_size];
uint16_t *gamma_g = &gamma_ramps[1*state->ramp_size];
uint16_t *gamma_b = &gamma_ramps[2*state->ramp_size];
if (state->preserve) {
/* Initialize gamma ramps from saved state */
memcpy(gamma_ramps, state->saved_ramps,
3*state->ramp_size*sizeof(uint16_t));
} else {
/* Initialize gamma ramps to pure state */
for (int i = 0; i < state->ramp_size; i++) {
uint16_t value = (double)i/state->ramp_size *
(UINT16_MAX+1);
gamma_r[i] = value;
gamma_g[i] = value;
gamma_b[i] = value;
}
}
colorramp_fill(gamma_r, gamma_g, gamma_b, state->ramp_size,
setting);
/* Set new gamma ramps */
r = XF86VidModeSetGammaRamp(state->display, state->screen_num,
state->ramp_size, gamma_r, gamma_g,
gamma_b);
if (!r) {
fprintf(stderr, _("X request failed: %s\n"),
"XF86VidModeSetGammaRamp");
free(gamma_ramps);
return -1;
}
free(gamma_ramps);
return 0;
}
