IABSD.fr/xenocara/xserver/dri3/dri3_screen.c

Branch : - branch - master - tag -

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  Commit

• Author : matthieu
  Date : 2014-09-27 17:52:59
  Hash : 4f58590a
  Message : Update to xserver 1.16.1. Tested by naddy@, jsg@ & kettenis@

• xserver/dri3/dri3_screen.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>
  
  static inline Bool has_open(dri3_screen_info_ptr info) {
      if (info == NULL)
          return FALSE;
  
      return info->open != NULL ||
          (info->version >= 1 && info->open_client != NULL);
  }
  
  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 (!has_open(info))
          return BadMatch;
  
      if (info->version >= 1 && info->open_client != NULL)
          rc = (*info->open_client) (client, screen, provider, fd);
      else
          rc = (*info->open) (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;
  }