IABSD.fr/xenocara/driver/xf86-video-vmware/src/vmwaremodes.c

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• Author : matthieu
  Date : 2022-06-28 10:09:44
  Hash : eaba5413
  Message : Update to xf86-video-vmware 13.3.0

• driver/xf86-video-vmware/src/vmwaremodes.c

• /*
   * Copyright 2007 by VMware, Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   *
   * Except as contained in this notice, the name of the copyright holder(s)
   * and author(s) shall not be used in advertising or otherwise to promote
   * the sale, use or other dealings in this Software without prior written
   * authorization from the copyright holder(s) and author(s).
   */
  
  /*
   * vmwaremodes.c --
   *      
   *      Provide additional modes for the driver.
   */
  
  #ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  #include "xf86.h"
  #ifdef HAVE_XORG_SERVER_1_2_0
  #include <xf86Modes.h>
  #endif
  #include "vm_basic_types.h"
  #include "vmware.h"
  #include "common_compat.h"
  
  #ifndef M_T_DRIVER
  # define M_T_DRIVER  0x40	/* Supplied by the driver (EDID, etc) */
  #endif
  
  #define MODEPREFIX NULL, NULL, NULL, 0, M_T_DRIVER
  #define MODESUFFIX 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,FALSE,FALSE,0,NULL,0,0.0,0.0
  
  #define VMW_DEFLT_MODE_NAME "vmwlegacy-default-%dx%d"
  
  /*
   *-----------------------------------------------------------------------------
   *
   * vmwareAddDefaultMode --
   *
   *    Add a default mode with the current screen dimensions.
   *
   * Results:
   *    The default mode.
   *
   * Side effects:
   *    None.
   *
   *-----------------------------------------------------------------------------
   */
  
  void
  vmwareAddDefaultMode(ScrnInfoPtr pScrn, uint32 dwidth, uint32 dheight)
  {
      DisplayModePtr *monitorModes = &pScrn->monitor->Modes;
      DisplayModePtr modes = NULL;
  
      if (monitorModes == NULL || *monitorModes == NULL) {
  	goto out_err;
      }
  
  #ifdef HAVE_XORG_SERVER_1_2_0
      if (dwidth && dheight) {
  	MonPtr monitor = pScrn->monitor;
  	DisplayModePtr mode = NULL;
  	DisplayModeRec dynamic =
  	    { MODEPREFIX, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, MODESUFFIX };
  	unsigned dispModeCount = 0;
  	CONST_ABI_18_0 char **dispModeList;
  	char *dynModeName;
  	char name[80];
  	VMWAREPtr pVMWARE = VMWAREPTR(pScrn);
  
  	/* First, add the default mode name to the display mode
  	 * requests.
  	 */
  
  	snprintf(name, sizeof(name), VMW_DEFLT_MODE_NAME, dwidth, dheight);
  
  	dynModeName = xnfstrdup(name);
  	if (!dynModeName || !pScrn->display)
  	    goto out_err;
  
  	if (pScrn->display->modes) {
  	    dispModeList = pScrn->display->modes;
  	    while(*dispModeList)
  		dispModeList++;
  	    dispModeCount = (unsigned)(((size_t)dispModeList -
  	                                (size_t)pScrn->display->modes) /
  	                               sizeof(*dispModeList));
  	}
  
  	dispModeList = xnfcalloc(dispModeCount + 2, sizeof(*dispModeList));
  	if (!dispModeList)
  	    goto out_err;
  
  	memcpy(dispModeList, pScrn->display->modes,
  	       dispModeCount * sizeof(*dispModeList));
  	dispModeList[dispModeCount] = dynModeName;
  	pScrn->display->modes = dispModeList;
  
  	/* Then, add the default mode itself.
  	 */
  
  	dynamic.name = name;
  	dynamic.HDisplay = dwidth;
  	dynamic.HSyncStart = dynamic.HDisplay + 1;
  	dynamic.HSyncEnd = dynamic.HSyncStart + 1;
  	dynamic.HTotal = dynamic.HSyncEnd * 5 / 4;
  	dynamic.VDisplay = dheight;
  	dynamic.VSyncStart = dynamic.VDisplay + 1;
  	dynamic.VSyncEnd = dynamic.VSyncStart + 1;
  	dynamic.VTotal = dynamic.VSyncEnd + 1;
  	if (monitor->nVrefresh > 0)
  	    dynamic.VRefresh = monitor->vrefresh[0].lo;
  	else
  	    dynamic.VRefresh = 60;
  	dynamic.Clock = dynamic.VRefresh * dynamic.VTotal *
  	    dynamic.HTotal / 1000;
  	mode = xf86DuplicateMode(&dynamic);
  	modes = xf86ModesAdd(modes, mode);
  
  	if (dispModeCount == 0) {
  
  	    /*
  	     * Set up a large virtual size, so that we allow also
  	     * setting modes larger than the initial mode.
  	     *
  	     * We might also want to consider the case where
  	     * dispModeCount != 0, but the requested display modes
  	     * are not available. This is sufficient for now.
  	     */
  
  	    if (pScrn->display->virtualX == 0)
  		pScrn->display->virtualX = pVMWARE->maxWidth;
  	    if (pScrn->display->virtualY == 0)
  		pScrn->display->virtualY = pVMWARE->maxHeight;
  	}
      }
  
      *monitorModes = xf86ModesAdd(*monitorModes, modes);
  #else
      (void) modes;
  #endif
      return;
    out_err:
      xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Failed to add default mode.");
  }