dri3/dri3_screen.c

   1 /*
   2  * Copyright © 2013 Keith Packard
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #ifdef HAVE_XORG_CONFIG_H
  24 #include <xorg-config.h>
  25 #endif
  26
  27 #include "dri3_priv.h"
  28 #include <syncsdk.h>
  29 #include <misync.h>
  30 #include <misyncshm.h>
  31 #include <randrstr.h>
  32
  33 int
  34 dri3_open(ClientPtr client, ScreenPtr screen, RRProviderPtr provider, int *fd)
  35 {
  36     dri3_screen_priv_ptr        ds = dri3_screen_priv(screen);
  37     dri3_screen_info_ptr        info = ds->info;
  38     int                         rc;
  39
  40     if (!info || !info->open)
  41         return BadMatch;
  42
  43     rc = (*info->open) (screen, provider, fd);
  44     if (rc != Success)
  45         return rc;
  46
  47     return Success;
  48 }
  49
  50 int
  51 dri3_pixmap_from_fd(PixmapPtr *ppixmap, ScreenPtr screen, int fd,
  52                     CARD16 width, CARD16 height, CARD16 stride, CARD8 depth, CARD8 bpp)
  53 {
  54     dri3_screen_priv_ptr        ds = dri3_screen_priv(screen);
  55     dri3_screen_info_ptr        info = ds->info;
  56     PixmapPtr                   pixmap;
  57
  58     if (!info || !info->pixmap_from_fd)
  59         return BadImplementation;
  60
  61     pixmap = (*info->pixmap_from_fd) (screen, fd, width, height, stride, depth, bpp);
  62     if (!pixmap)
  63         return BadAlloc;
  64
  65     *ppixmap = pixmap;
  66     return Success;
  67 }
  68
  69 int
  70 dri3_fd_from_pixmap(int *pfd, PixmapPtr pixmap, CARD16 *stride, CARD32 *size)
  71 {
  72     ScreenPtr                   screen = pixmap->drawable.pScreen;
  73     dri3_screen_priv_ptr        ds = dri3_screen_priv(screen);
  74     dri3_screen_info_ptr        info = ds->info;
  75     int                         fd;
  76
  77     if (!info || !info->fd_from_pixmap)
  78         return BadImplementation;
  79
  80     fd = (*info->fd_from_pixmap)(screen, pixmap, stride, size);
  81     if (fd < 0)
  82         return BadAlloc;
  83     *pfd = fd;
  84     return Success;
  85 }
  86