aboutsummaryrefslogtreecommitdiffstats
path: root/libgamma_x_randr_crtc_initialise.c
blob: 808b2c2756287649b67c2d872e19df948bdbfd30 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
/* See LICENSE file for copyright and license details. */
#define IN_LIBGAMMA_X_RANDR
#include "common.h"


/**
 * Initialise an allocated CRTC state
 * 
 * @param   this       The CRTC state to initialise
 * @param   partition  The partition state for the partition that the CRTC belongs to.
 * @param   crtc       The the index of the CRTC within the site
 * @return             Zero on success, otherwise (negative) the value of an
 *                     error identifier provided by this library
 */
int
libgamma_x_randr_crtc_initialise(libgamma_crtc_state_t *restrict this,
                                 libgamma_partition_state_t *restrict partition, size_t crtc)
{
	libgamma_x_randr_partition_data_t *restrict screen_data = partition->data;
	xcb_randr_crtc_t *restrict crtc_ids = screen_data->crtcs;
	this->data = crtc_ids + crtc;
	return crtc < partition->crtcs_available ? 0 : LIBGAMMA_NO_SUCH_CRTC;
}