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RANDR: Adjust color temperature fro all CRTCs.

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This commit is contained in:
Jon Lund Steffensen
2009-12-25 13:22:08 +01:00
parent b5ff490c88
commit 03b5c7f88b
1 changed files with 67 additions and 53 deletions
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src/randr.c
+67 -53
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@@ -63,6 +63,64 @@ randr_check_extension()
return 0;
}
static int
randr_crtc_set_temperature(xcb_connection_t *conn, xcb_randr_crtc_t crtc,
int temp, float gamma[3])
{
xcb_generic_error_t *error;
/* Request size of gamma ramps */
xcb_randr_get_crtc_gamma_size_cookie_t gamma_size_cookie =
xcb_randr_get_crtc_gamma_size(conn, crtc);
xcb_randr_get_crtc_gamma_size_reply_t *gamma_size_reply =
xcb_randr_get_crtc_gamma_size_reply(conn, gamma_size_cookie,
&error);
if (error) {
fprintf(stderr, "RANDR Get CRTC Gamma Size, error: %d\n",
error->error_code);
return -1;
}
int gamma_ramp_size = gamma_size_reply->size;
free(gamma_size_reply);
if (gamma_ramp_size == 0) {
fprintf(stderr, "Gamma ramp size too small: %i\n",
gamma_ramp_size);
return -1;
}
/* Create new gamma ramps */
uint16_t *gamma_ramps = malloc(3*gamma_ramp_size*sizeof(uint16_t));
if (gamma_ramps == NULL) abort();
uint16_t *gamma_r = &gamma_ramps[0*gamma_ramp_size];
uint16_t *gamma_g = &gamma_ramps[1*gamma_ramp_size];
uint16_t *gamma_b = &gamma_ramps[2*gamma_ramp_size];
colorramp_fill(gamma_r, gamma_g, gamma_b, gamma_ramp_size,
temp, gamma);
/* Set new gamma ramps */
xcb_void_cookie_t gamma_set_cookie =
xcb_randr_set_crtc_gamma_checked(conn, crtc, gamma_ramp_size,
gamma_r, gamma_g, gamma_b);
error = xcb_request_check(conn, gamma_set_cookie);
if (error) {
fprintf(stderr, "RANDR Set CRTC Gamma, error: %d\n",
error->error_code);
free(gamma_ramps);
return -1;
}
free(gamma_ramps);
return 0;
}
int
randr_set_temperature(int temp, float gamma[3])
{
@@ -92,62 +150,18 @@ randr_set_temperature(int temp, float gamma[3])
xcb_randr_crtc_t *crtcs =
xcb_randr_get_screen_resources_current_crtcs(res_reply);
xcb_randr_crtc_t crtc = crtcs[0];
for (int i = 0; i < res_reply->num_crtcs; i++) {
int r = randr_crtc_set_temperature(conn, crtcs[i],
temp, gamma);
if (r < 0) {
fprintf(stderr, "WARNING: Unable to adjust"
" CRTC %i.\n", i);
}
}
free(res_reply);
/* Request size of gamma ramps */
xcb_randr_get_crtc_gamma_size_cookie_t gamma_size_cookie =
xcb_randr_get_crtc_gamma_size(conn, crtc);
xcb_randr_get_crtc_gamma_size_reply_t *gamma_size_reply =
xcb_randr_get_crtc_gamma_size_reply(conn, gamma_size_cookie,
&error);
if (error) {
fprintf(stderr, "RANDR Get CRTC Gamma Size, error: %d\n",
error->error_code);
xcb_disconnect(conn);
return -1;
}
int gamma_ramp_size = gamma_size_reply->size;
free(gamma_size_reply);
if (gamma_ramp_size == 0) {
fprintf(stderr, "Error: Gamma ramp size too small: %i\n",
gamma_ramp_size);
xcb_disconnect(conn);
return -1;
}
/* Create new gamma ramps */
uint16_t *gamma_ramps = malloc(3*gamma_ramp_size*sizeof(uint16_t));
if (gamma_ramps == NULL) abort();
uint16_t *gamma_r = &gamma_ramps[0*gamma_ramp_size];
uint16_t *gamma_g = &gamma_ramps[1*gamma_ramp_size];
uint16_t *gamma_b = &gamma_ramps[2*gamma_ramp_size];
colorramp_fill(gamma_r, gamma_g, gamma_b, gamma_ramp_size,
temp, gamma);
/* Set new gamma ramps */
xcb_void_cookie_t gamma_set_cookie =
xcb_randr_set_crtc_gamma_checked(conn, crtc, gamma_ramp_size,
gamma_r, gamma_g, gamma_b);
error = xcb_request_check(conn, gamma_set_cookie);
if (error) {
fprintf(stderr, "RANDR Set CRTC Gamma, error: %d\n",
error->error_code);
free(gamma_ramps);
xcb_disconnect(conn);
return -1;
}
free(gamma_ramps);
/* Close connection */
xcb_disconnect(conn);