1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
/* See LICENSE file for copyright and license details. */
#include "common.h"
/**
* Retrieve information about a CRTC:s gamma ramps, synchronous version
*
* This is a synchronous request function, as such,
* you have to ensure that communication is blocking
* (default), and that there are not asynchronous
* requests waiting, it also means that EINTR:s are
* silently ignored and there no wait to cancel the
* operation without disconnection from the server
*
* @param crtc The name of the CRTC
* @param info Output parameter for the information, must be initialised
* @param ctx The state of the library, must be connected
* @return Zero on success, -1 on error, in which case `ctx->error`
* (rather than `errno`) is read for information about the error
*/
int
libcoopgamma_get_gamma_info_sync(const char *restrict ctrc, libcoopgamma_crtc_info_t *restrict info,
libcoopgamma_context_t *restrict ctx)
{
SYNC_CALL(libcoopgamma_get_gamma_info_send(ctrc, ctx, &async),
libcoopgamma_get_gamma_info_recv(info, ctx, &async), (copy_errno(ctx), -1));
}
|
