xserver-multidpi/dri3/dri3_screen.c
Kristian Høgsberg 9ba2084321 dri3: Allow asynchronous implementation for dri3_open
By passing the client pointer to the dri3_open implementation, we allow
the clients to implement the open callback asynchronously.  If the
client ignore count is positive after returning from dri3_open, we
assume that authentication is in progress and doesn't send the reply.
The code to send the reply is moved into a helper function, which the
implementation can call upon receiving its authenticaion reply.

Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
2014-04-01 10:31:09 -07:00

87 lines
2.8 KiB
C

/*
* Copyright © 2013 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "dri3_priv.h"
#include <syncsdk.h>
#include <misync.h>
#include <misyncshm.h>
#include <randrstr.h>
int
dri3_open(ClientPtr client, ScreenPtr screen, RRProviderPtr provider, int *fd)
{
dri3_screen_priv_ptr ds = dri3_screen_priv(screen);
dri3_screen_info_ptr info = ds->info;
int rc;
if (!info || !info->open)
return BadMatch;
rc = (*info->open) (client, screen, provider, fd);
if (rc != Success)
return rc;
return Success;
}
int
dri3_pixmap_from_fd(PixmapPtr *ppixmap, ScreenPtr screen, int fd,
CARD16 width, CARD16 height, CARD16 stride, CARD8 depth, CARD8 bpp)
{
dri3_screen_priv_ptr ds = dri3_screen_priv(screen);
dri3_screen_info_ptr info = ds->info;
PixmapPtr pixmap;
if (!info || !info->pixmap_from_fd)
return BadImplementation;
pixmap = (*info->pixmap_from_fd) (screen, fd, width, height, stride, depth, bpp);
if (!pixmap)
return BadAlloc;
*ppixmap = pixmap;
return Success;
}
int
dri3_fd_from_pixmap(int *pfd, PixmapPtr pixmap, CARD16 *stride, CARD32 *size)
{
ScreenPtr screen = pixmap->drawable.pScreen;
dri3_screen_priv_ptr ds = dri3_screen_priv(screen);
dri3_screen_info_ptr info = ds->info;
int fd;
if (!info || !info->fd_from_pixmap)
return BadImplementation;
fd = (*info->fd_from_pixmap)(screen, pixmap, stride, size);
if (fd < 0)
return BadAlloc;
*pfd = fd;
return Success;
}