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xenocara/xserver/hw/xfree86/common/xf86DGA.c

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Importing xserver from X.Org 7.2RC2
2006-11-26 11:13:41 -07:00
/*
* Copyright (c) 1998-2002 by The XFree86 Project, 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).
*
* Written by Mark Vojkovich
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "xf86.h"
#include "xf86str.h"
#include "xf86Priv.h"
#include "dgaproc.h"
#include <X11/extensions/xf86dgastr.h>
#include "colormapst.h"
#include "pixmapstr.h"
#include "inputstr.h"
#include "globals.h"
#include "servermd.h"
#include "micmap.h"
#ifdef XKB
#include <X11/extensions/XKBsrv.h>
#endif
#include "xf86Xinput.h"
static unsigned long DGAGeneration = 0;
static int DGAScreenIndex = -1;
static Bool DGACloseScreen(int i, ScreenPtr pScreen);
static void DGADestroyColormap(ColormapPtr pmap);
static void DGAInstallColormap(ColormapPtr pmap);
static void DGAUninstallColormap(ColormapPtr pmap);
static void
DGACopyModeInfo(
DGAModePtr mode,
XDGAModePtr xmode
);
_X_EXPORT int *XDGAEventBase = NULL;
#define DGA_GET_SCREEN_PRIV(pScreen) \
((DGAScreenPtr)((pScreen)->devPrivates[DGAScreenIndex].ptr))
typedef struct _FakedVisualList{
Bool free;
VisualPtr pVisual;
struct _FakedVisualList *next;
} FakedVisualList;
typedef struct {
ScrnInfoPtr pScrn;
int numModes;
DGAModePtr modes;
CloseScreenProcPtr CloseScreen;
DestroyColormapProcPtr DestroyColormap;
InstallColormapProcPtr InstallColormap;
UninstallColormapProcPtr UninstallColormap;
DGADevicePtr current;
DGAFunctionPtr funcs;
int input;
ClientPtr client;
int pixmapMode;
FakedVisualList *fakedVisuals;
ColormapPtr dgaColormap;
ColormapPtr savedColormap;
Bool grabMouse;
Bool grabKeyboard;
} DGAScreenRec, *DGAScreenPtr;
_X_EXPORT Bool
DGAInit(
ScreenPtr pScreen,
DGAFunctionPtr funcs,
DGAModePtr modes,
int num
){
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
DGAScreenPtr pScreenPriv;
int i;
if(!funcs || !funcs->SetMode || !funcs->OpenFramebuffer)
return FALSE;
if(!modes || num <= 0)
return FALSE;
if(DGAGeneration != serverGeneration) {
if((DGAScreenIndex = AllocateScreenPrivateIndex()) < 0)
return FALSE;
DGAGeneration = serverGeneration;
}
if(!(pScreenPriv = (DGAScreenPtr)xalloc(sizeof(DGAScreenRec))))
return FALSE;
pScreenPriv->pScrn = pScrn;
pScreenPriv->numModes = num;
pScreenPriv->modes = modes;
pScreenPriv->current = NULL;
pScreenPriv->funcs = funcs;
pScreenPriv->input = 0;
pScreenPriv->client = NULL;
pScreenPriv->fakedVisuals = NULL;
pScreenPriv->dgaColormap = NULL;
pScreenPriv->savedColormap = NULL;
pScreenPriv->grabMouse = FALSE;
pScreenPriv->grabKeyboard = FALSE;
for(i = 0; i < num; i++)
modes[i].num = i + 1;
#ifdef PANORAMIX
if(!noPanoramiXExtension)
for(i = 0; i < num; i++)
modes[i].flags &= ~DGA_PIXMAP_AVAILABLE;
#endif
pScreen->devPrivates[DGAScreenIndex].ptr = (pointer)pScreenPriv;
pScreenPriv->CloseScreen = pScreen->CloseScreen;
pScreen->CloseScreen = DGACloseScreen;
pScreenPriv->DestroyColormap = pScreen->DestroyColormap;
pScreen->DestroyColormap = DGADestroyColormap;
pScreenPriv->InstallColormap = pScreen->InstallColormap;
pScreen->InstallColormap = DGAInstallColormap;
pScreenPriv->UninstallColormap = pScreen->UninstallColormap;
pScreen->UninstallColormap = DGAUninstallColormap;
/*
* This is now set in InitOutput().
*
pScrn->SetDGAMode = xf86SetDGAMode;
*/
return TRUE;
}
/* DGAReInitModes allows the driver to re-initialize
* the DGA mode list.
*/
_X_EXPORT Bool
DGAReInitModes(
ScreenPtr pScreen,
DGAModePtr modes,
int num
){
DGAScreenPtr pScreenPriv;
int i;
/* No DGA? Ignore call (but don't make it look like it failed) */
if(DGAScreenIndex < 0)
return TRUE;
pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
/* Same as above */
if(!pScreenPriv)
return TRUE;
/* Can't do this while DGA is active */
if(pScreenPriv->current)
return FALSE;
/* Quick sanity check */
if(!num)
modes = NULL;
else if(!modes)
num = 0;
pScreenPriv->numModes = num;
pScreenPriv->modes = modes;
/* This practically disables DGA. So be it. */
if(!num)
return TRUE;
for(i = 0; i < num; i++)
modes[i].num = i + 1;
#ifdef PANORAMIX
if(!noPanoramiXExtension)
for(i = 0; i < num; i++)
modes[i].flags &= ~DGA_PIXMAP_AVAILABLE;
#endif
return TRUE;
}
static void
FreeMarkedVisuals(ScreenPtr pScreen)
{
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
FakedVisualList *prev, *curr, *tmp;
if(!pScreenPriv->fakedVisuals)
return;
prev = NULL;
curr = pScreenPriv->fakedVisuals;
while(curr) {
if(curr->free) {
tmp = curr;
curr = curr->next;
if(prev)
prev->next = curr;
else
pScreenPriv->fakedVisuals = curr;
xfree(tmp->pVisual);
xfree(tmp);
} else {
prev = curr;
curr = curr->next;
}
}
}
static Bool
DGACloseScreen(int i, ScreenPtr pScreen)
{
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
FreeMarkedVisuals(pScreen);
pScreen->CloseScreen = pScreenPriv->CloseScreen;
pScreen->DestroyColormap = pScreenPriv->DestroyColormap;
pScreen->InstallColormap = pScreenPriv->InstallColormap;
pScreen->UninstallColormap = pScreenPriv->UninstallColormap;
/* DGAShutdown() should have ensured that no DGA
screen were active by here */
xfree(pScreenPriv);
return((*pScreen->CloseScreen)(i, pScreen));
}
static void
DGADestroyColormap(ColormapPtr pmap)
{
ScreenPtr pScreen = pmap->pScreen;
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
VisualPtr pVisual = pmap->pVisual;
if(pScreenPriv->fakedVisuals) {
FakedVisualList *curr = pScreenPriv->fakedVisuals;
while(curr) {
if(curr->pVisual == pVisual) {
/* We can't get rid of them yet since FreeColormap
still needs the pVisual during the cleanup */
curr->free = TRUE;
break;
}
curr = curr->next;
}
}
if(pScreenPriv->DestroyColormap) {
pScreen->DestroyColormap = pScreenPriv->DestroyColormap;
(*pScreen->DestroyColormap)(pmap);
pScreen->DestroyColormap = DGADestroyColormap;
}
}
static void
DGAInstallColormap(ColormapPtr pmap)
{
ScreenPtr pScreen = pmap->pScreen;
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
if(pScreenPriv->current && pScreenPriv->dgaColormap) {
if (pmap != pScreenPriv->dgaColormap) {
pScreenPriv->savedColormap = pmap;
pmap = pScreenPriv->dgaColormap;
}
}
pScreen->InstallColormap = pScreenPriv->InstallColormap;
(*pScreen->InstallColormap)(pmap);
pScreen->InstallColormap = DGAInstallColormap;
}
static void
DGAUninstallColormap(ColormapPtr pmap)
{
ScreenPtr pScreen = pmap->pScreen;
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
if(pScreenPriv->current && pScreenPriv->dgaColormap) {
if (pmap == pScreenPriv->dgaColormap) {
pScreenPriv->dgaColormap = NULL;
}
}
pScreen->UninstallColormap = pScreenPriv->UninstallColormap;
(*pScreen->UninstallColormap)(pmap);
pScreen->UninstallColormap = DGAUninstallColormap;
}
int
xf86SetDGAMode(
int index,
int num,
DGADevicePtr devRet
){
ScreenPtr pScreen = screenInfo.screens[index];
DGAScreenPtr pScreenPriv;
ScrnInfoPtr pScrn;
DGADevicePtr device;
PixmapPtr pPix = NULL;
DGAModePtr pMode = NULL;
/* First check if DGAInit was successful on this screen */
if (DGAScreenIndex < 0)
return BadValue;
pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
if (!pScreenPriv)
return BadValue;
pScrn = pScreenPriv->pScrn;
if(!num) {
if(pScreenPriv->current) {
PixmapPtr oldPix = pScreenPriv->current->pPix;
if(oldPix) {
if(oldPix->drawable.id)
FreeResource(oldPix->drawable.id, RT_NONE);
else
(*pScreen->DestroyPixmap)(oldPix);
}
xfree(pScreenPriv->current);
pScreenPriv->current = NULL;
pScrn->vtSema = TRUE;
(*pScreenPriv->funcs->SetMode)(pScrn, NULL);
if(pScreenPriv->savedColormap) {
(*pScreen->InstallColormap)(pScreenPriv->savedColormap);
pScreenPriv->savedColormap = NULL;
}
pScreenPriv->dgaColormap = NULL;
(*pScrn->EnableDisableFBAccess)(index, TRUE);
FreeMarkedVisuals(pScreen);
}
pScreenPriv->grabMouse = FALSE;
pScreenPriv->grabKeyboard = FALSE;
return Success;
}
if(!pScrn->vtSema && !pScreenPriv->current) /* Really switched away */
return BadAlloc;
if((num > 0) && (num <= pScreenPriv->numModes))
pMode = &(pScreenPriv->modes[num - 1]);
else
return BadValue;
if(!(device = (DGADevicePtr)xalloc(sizeof(DGADeviceRec))))
return BadAlloc;
if(!pScreenPriv->current) {
Bool oldVTSema = pScrn->vtSema;
pScrn->vtSema = FALSE; /* kludge until we rewrite VT switching */
(*pScrn->EnableDisableFBAccess)(index, FALSE);
pScrn->vtSema = oldVTSema;
}
if(!(*pScreenPriv->funcs->SetMode)(pScrn, pMode)) {
xfree(device);
return BadAlloc;
}
pScrn->currentMode = pMode->mode;
if(!pScreenPriv->current && !pScreenPriv->input) {
/* if it's multihead we need to warp the cursor off of
our screen so it doesn't get trapped */
}
pScrn->vtSema = FALSE;
if(pScreenPriv->current) {
PixmapPtr oldPix = pScreenPriv->current->pPix;
if(oldPix) {
if(oldPix->drawable.id)
FreeResource(oldPix->drawable.id, RT_NONE);
else
(*pScreen->DestroyPixmap)(oldPix);
}
xfree(pScreenPriv->current);
pScreenPriv->current = NULL;
}
if(pMode->flags & DGA_PIXMAP_AVAILABLE) {
if((pPix = (*pScreen->CreatePixmap)(pScreen, 0, 0, pMode->depth))) {
(*pScreen->ModifyPixmapHeader)(pPix,
pMode->pixmapWidth, pMode->pixmapHeight,
pMode->depth, pMode->bitsPerPixel,
pMode->bytesPerScanline,
(pointer)(pMode->address));
}
}
devRet->mode = device->mode = pMode;
devRet->pPix = device->pPix = pPix;
pScreenPriv->current = device;
pScreenPriv->pixmapMode = FALSE;
pScreenPriv->grabMouse = TRUE;
pScreenPriv->grabKeyboard = TRUE;
return Success;
}
/*********** exported ones ***************/
_X_EXPORT void
DGASetInputMode(int index, Bool keyboard, Bool mouse)
{
ScreenPtr pScreen = screenInfo.screens[index];
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
if (pScreenPriv)
{
pScreenPriv->grabMouse = mouse;
pScreenPriv->grabKeyboard = keyboard;
}
}
_X_EXPORT Bool
DGAChangePixmapMode(int index, int *x, int *y, int mode)
{
DGAScreenPtr pScreenPriv;
DGADevicePtr pDev;
DGAModePtr pMode;
PixmapPtr pPix;
if(DGAScreenIndex < 0)
return FALSE;
pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
if(!pScreenPriv || !pScreenPriv->current || !pScreenPriv->current->pPix)
return FALSE;
pDev = pScreenPriv->current;
pPix = pDev->pPix;
pMode = pDev->mode;
if(mode) {
int shift = 2;
if(*x > (pMode->pixmapWidth - pMode->viewportWidth))
*x = pMode->pixmapWidth - pMode->viewportWidth;
if(*y > (pMode->pixmapHeight - pMode->viewportHeight))
*y = pMode->pixmapHeight - pMode->viewportHeight;
switch(xf86Screens[index]->bitsPerPixel) {
case 16: shift = 1; break;
case 32: shift = 0; break;
default: break;
}
if(BITMAP_SCANLINE_PAD == 64)
shift++;
*x = (*x >> shift) << shift;
pPix->drawable.x = *x;
pPix->drawable.y = *y;
pPix->drawable.width = pMode->viewportWidth;
pPix->drawable.height = pMode->viewportHeight;
} else {
pPix->drawable.x = 0;
pPix->drawable.y = 0;
pPix->drawable.width = pMode->pixmapWidth;
pPix->drawable.height = pMode->pixmapHeight;
}
pPix->drawable.serialNumber = NEXT_SERIAL_NUMBER;
pScreenPriv->pixmapMode = mode;
return TRUE;
}
_X_EXPORT Bool
DGAAvailable(int index)
{
if(DGAScreenIndex < 0)
return FALSE;
if (!xf86NoSharedResources(((ScrnInfoPtr)screenInfo.screens[index]->
devPrivates[xf86ScreenIndex].ptr)->scrnIndex,MEM))
return FALSE;
if(DGA_GET_SCREEN_PRIV(screenInfo.screens[index]))
return TRUE;
return FALSE;
}
_X_EXPORT Bool
DGAActive(int index)
{
DGAScreenPtr pScreenPriv;
if(DGAScreenIndex < 0)
return FALSE;
pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
if(pScreenPriv && pScreenPriv->current)
return TRUE;
return FALSE;
}
/* Called by the event code in case the server is abruptly terminated */
void
DGAShutdown()
{
ScrnInfoPtr pScrn;
int i;
if(DGAScreenIndex < 0)
return;
for(i = 0; i < screenInfo.numScreens; i++) {
pScrn = xf86Screens[i];
(void)(*pScrn->SetDGAMode)(pScrn->scrnIndex, 0, NULL);
}
}
/* Called by the extension to initialize a mode */
_X_EXPORT int
DGASetMode(
int index,
int num,
XDGAModePtr mode,
PixmapPtr *pPix
){
ScrnInfoPtr pScrn = xf86Screens[index];
DGADeviceRec device;
int ret;
/* We rely on the extension to check that DGA is available */
ret = (*pScrn->SetDGAMode)(index, num, &device);
if((ret == Success) && num) {
DGACopyModeInfo(device.mode, mode);
*pPix = device.pPix;
}
return ret;
}
/* Called from the extension to let the DDX know which events are requested */
_X_EXPORT void
DGASelectInput(
int index,
ClientPtr client,
long mask
){
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is available */
pScreenPriv->client = client;
pScreenPriv->input = mask;
}
_X_EXPORT int
DGAGetViewportStatus(int index)
{
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is active */
if (!pScreenPriv->funcs->GetViewport)
return 0;
return (*pScreenPriv->funcs->GetViewport)(pScreenPriv->pScrn);
}
_X_EXPORT int
DGASetViewport(
int index,
int x, int y,
int mode
){
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
if (pScreenPriv->funcs->SetViewport)
(*pScreenPriv->funcs->SetViewport)(pScreenPriv->pScrn, x, y, mode);
return Success;
}
static int
BitsClear(CARD32 data)
{
int bits = 0;
CARD32 mask;
for(mask = 1; mask; mask <<= 1) {
if(!(data & mask)) bits++;
else break;
}
return bits;
}
_X_EXPORT int
DGACreateColormap(int index, ClientPtr client, int id, int mode, int alloc)
{
ScreenPtr pScreen = screenInfo.screens[index];
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
FakedVisualList *fvlp;
VisualPtr pVisual;
DGAModePtr pMode;
ColormapPtr pmap;
if(!mode || (mode > pScreenPriv->numModes))
return BadValue;
if((alloc != AllocNone) && (alloc != AllocAll))
return BadValue;
pMode = &(pScreenPriv->modes[mode - 1]);
if(!(pVisual = xalloc(sizeof(VisualRec))))
return BadAlloc;
pVisual->vid = FakeClientID(0);
pVisual->class = pMode->visualClass;
pVisual->nplanes = pMode->depth;
pVisual->ColormapEntries = 1 << pMode->depth;
pVisual->bitsPerRGBValue = (pMode->depth + 2) / 3;
switch (pVisual->class) {
case PseudoColor:
case GrayScale:
case StaticGray:
pVisual->bitsPerRGBValue = 8; /* not quite */
pVisual->redMask = 0;
pVisual->greenMask = 0;
pVisual->blueMask = 0;
pVisual->offsetRed = 0;
pVisual->offsetGreen = 0;
pVisual->offsetBlue = 0;
break;
case DirectColor:
case TrueColor:
pVisual->ColormapEntries = 1 << pVisual->bitsPerRGBValue;
/* fall through */
case StaticColor:
pVisual->redMask = pMode->red_mask;
pVisual->greenMask = pMode->green_mask;
pVisual->blueMask = pMode->blue_mask;
pVisual->offsetRed = BitsClear(pVisual->redMask);
pVisual->offsetGreen = BitsClear(pVisual->greenMask);
pVisual->offsetBlue = BitsClear(pVisual->blueMask);
}
if(!(fvlp = xalloc(sizeof(FakedVisualList)))) {
xfree(pVisual);
return BadAlloc;
}
fvlp->free = FALSE;
fvlp->pVisual = pVisual;
fvlp->next = pScreenPriv->fakedVisuals;
pScreenPriv->fakedVisuals = fvlp;
LEGAL_NEW_RESOURCE(id, client);
return CreateColormap(id, pScreen, pVisual, &pmap, alloc, client->index);
}
/* Called by the extension to install a colormap on DGA active screens */
_X_EXPORT void
DGAInstallCmap(ColormapPtr cmap)
{
ScreenPtr pScreen = cmap->pScreen;
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
/* We rely on the extension to check that DGA is active */
if(!pScreenPriv->dgaColormap)
pScreenPriv->savedColormap = miInstalledMaps[pScreen->myNum];
pScreenPriv->dgaColormap = cmap;
(*pScreen->InstallColormap)(cmap);
}
_X_EXPORT int
DGASync(int index)
{
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is active */
if (pScreenPriv->funcs->Sync)
(*pScreenPriv->funcs->Sync)(pScreenPriv->pScrn);
return Success;
}
_X_EXPORT int
DGAFillRect(
int index,
int x, int y, int w, int h,
unsigned long color
){
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is active */
if(pScreenPriv->funcs->FillRect &&
(pScreenPriv->current->mode->flags & DGA_FILL_RECT)) {
(*pScreenPriv->funcs->FillRect)(pScreenPriv->pScrn, x, y, w, h, color);
return Success;
}
return BadMatch;
}
_X_EXPORT int
DGABlitRect(
int index,
int srcx, int srcy,
int w, int h,
int dstx, int dsty
){
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is active */
if(pScreenPriv->funcs->BlitRect &&
(pScreenPriv->current->mode->flags & DGA_BLIT_RECT)) {
(*pScreenPriv->funcs->BlitRect)(pScreenPriv->pScrn,
srcx, srcy, w, h, dstx, dsty);
return Success;
}
return BadMatch;
}
_X_EXPORT int
DGABlitTransRect(
int index,
int srcx, int srcy,
int w, int h,
int dstx, int dsty,
unsigned long color
){
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is active */
if(pScreenPriv->funcs->BlitTransRect &&
(pScreenPriv->current->mode->flags & DGA_BLIT_RECT_TRANS)) {
(*pScreenPriv->funcs->BlitTransRect)(pScreenPriv->pScrn,
srcx, srcy, w, h, dstx, dsty, color);
return Success;
}
return BadMatch;
}
_X_EXPORT int
DGAGetModes(int index)
{
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is available */
return pScreenPriv->numModes;
}
_X_EXPORT int
DGAGetModeInfo(
int index,
XDGAModePtr mode,
int num
){
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is available */
if((num <= 0) || (num > pScreenPriv->numModes))
return BadValue;
DGACopyModeInfo(&(pScreenPriv->modes[num - 1]), mode);
return Success;
}
static void
DGACopyModeInfo(
DGAModePtr mode,
XDGAModePtr xmode
){
DisplayModePtr dmode = mode->mode;
xmode->num = mode->num;
xmode->name = dmode->name;
xmode->VSync_num = (int)(dmode->VRefresh * 1000.0);
xmode->VSync_den = 1000;
xmode->flags = mode->flags;
xmode->imageWidth = mode->imageWidth;
xmode->imageHeight = mode->imageHeight;
xmode->pixmapWidth = mode->pixmapWidth;
xmode->pixmapHeight = mode->pixmapHeight;
xmode->bytesPerScanline = mode->bytesPerScanline;
xmode->byteOrder = mode->byteOrder;
xmode->depth = mode->depth;
xmode->bitsPerPixel = mode->bitsPerPixel;
xmode->red_mask = mode->red_mask;
xmode->green_mask = mode->green_mask;
xmode->blue_mask = mode->blue_mask;
xmode->visualClass = mode->visualClass;
xmode->viewportWidth = mode->viewportWidth;
xmode->viewportHeight = mode->viewportHeight;
xmode->xViewportStep = mode->xViewportStep;
xmode->yViewportStep = mode->yViewportStep;
xmode->maxViewportX = mode->maxViewportX;
xmode->maxViewportY = mode->maxViewportY;
xmode->viewportFlags = mode->viewportFlags;
xmode->reserved1 = mode->reserved1;
xmode->reserved2 = mode->reserved2;
xmode->offset = mode->offset;
if(dmode->Flags & V_INTERLACE) xmode->flags |= DGA_INTERLACED;
if(dmode->Flags & V_DBLSCAN) xmode->flags |= DGA_DOUBLESCAN;
}
Bool
DGAVTSwitch(void)
{
ScreenPtr pScreen;
int i;
for(i = 0; i < screenInfo.numScreens; i++) {
pScreen = screenInfo.screens[i];
/* Alternatively, this could send events to DGA clients */
if(DGAScreenIndex >= 0) {
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
if(pScreenPriv && pScreenPriv->current)
return FALSE;
}
}
return TRUE;
}
/* We have the power to steal or modify events that are about to get queued */
Bool
DGAStealKeyEvent(int index, xEvent *e)
{
DGAScreenPtr pScreenPriv;
dgaEvent de;
if(DGAScreenIndex < 0) /* no DGA */
return FALSE;
pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
if(!pScreenPriv || !pScreenPriv->grabKeyboard) /* no direct mode */
return FALSE;
de.u.u.type = e->u.u.type + *XDGAEventBase;
de.u.u.detail = e->u.u.detail;
de.u.event.time = e->u.keyButtonPointer.time;
xf86eqEnqueue ((xEvent *) &de);
return TRUE;
}
static int DGAMouseX, DGAMouseY;
Bool
DGAStealMouseEvent(int index, xEvent *e, int dx, int dy)
{
DGAScreenPtr pScreenPriv;
dgaEvent de;
if(DGAScreenIndex < 0) /* no DGA */
return FALSE;
pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
if(!pScreenPriv || !pScreenPriv->grabMouse) /* no direct mode */
return FALSE;
DGAMouseX += dx;
if (DGAMouseX < 0)
DGAMouseX = 0;
else if (DGAMouseX > screenInfo.screens[index]->width)
DGAMouseX = screenInfo.screens[index]->width;
DGAMouseY += dy;
if (DGAMouseY < 0)
DGAMouseY = 0;
else if (DGAMouseY > screenInfo.screens[index]->height)
DGAMouseY = screenInfo.screens[index]->height;
de.u.u.type = e->u.u.type + *XDGAEventBase;
de.u.u.detail = e->u.u.detail;
de.u.event.time = e->u.keyButtonPointer.time;
de.u.event.dx = dx;
de.u.event.dy = dy;
de.u.event.pad1 = DGAMouseX;
de.u.event.pad2 = DGAMouseY;
xf86eqEnqueue ((xEvent *) &de);
return TRUE;
}
Bool
DGAIsDgaEvent (xEvent *e)
{
int coreEquiv;
if (DGAScreenIndex < 0 || XDGAEventBase == 0)
return FALSE;
coreEquiv = e->u.u.type - *XDGAEventBase;
if (KeyPress <= coreEquiv && coreEquiv <= MotionNotify)
return TRUE;
return FALSE;
}
#define NoSuchEvent 0x80000000 /* so doesn't match NoEventMask */
static Mask filters[] =
{
NoSuchEvent, /* 0 */
NoSuchEvent, /* 1 */
KeyPressMask, /* KeyPress */
KeyReleaseMask, /* KeyRelease */
ButtonPressMask, /* ButtonPress */
ButtonReleaseMask, /* ButtonRelease */
PointerMotionMask, /* MotionNotify (initial state) */
};
static void
DGAProcessKeyboardEvent (ScreenPtr pScreen, dgaEvent *de, DeviceIntPtr keybd)
{
int key, bit;
register BYTE *kptr;
register int i;
register CARD8 modifiers;
register CARD16 mask;
int coreEquiv;
xEvent core;
KeyClassPtr keyc = keybd->key;
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
coreEquiv = de->u.u.type - *XDGAEventBase;
/*
* Fill in remaining event state
*/
de->u.event.dx = 0;
de->u.event.dy = 0;
de->u.event.screen = pScreen->myNum;
de->u.event.state = keyc->state | (inputInfo.pointer)->button->state;
/*
* Keep the core state in sync by duplicating what
* CoreProcessKeyboardEvent does
*/
key = de->u.u.detail;
kptr = &keyc->down[key >> 3];
bit = 1 << (key & 7);
modifiers = keyc->modifierMap[key];
switch (coreEquiv)
{
case KeyPress:
inputInfo.pointer->valuator->motionHintWindow = NullWindow;
*kptr |= bit;
keyc->prev_state = keyc->state;
#ifdef XKB
if (noXkbExtension)
#endif
{
for (i = 0, mask = 1; modifiers; i++, mask <<= 1)
{
if (mask & modifiers)
{
/* This key affects modifier "i" */
keyc->modifierKeyCount[i]++;
keyc->state |= mask;
modifiers &= ~mask;
}
}
}
break;
case KeyRelease:
inputInfo.pointer->valuator->motionHintWindow = NullWindow;
*kptr &= ~bit;
keyc->prev_state = keyc->state;
#ifdef XKB
if (noXkbExtension)
#endif
{
for (i = 0, mask = 1; modifiers; i++, mask <<= 1)
{
if (mask & modifiers) {
/* This key affects modifier "i" */
if (--keyc->modifierKeyCount[i] <= 0) {
keyc->state &= ~mask;
keyc->modifierKeyCount[i] = 0;
}
modifiers &= ~mask;
}
}
}
break;
}
/*
* Deliver the DGA event
*/
if (pScreenPriv->client)
{
/* If the DGA client has selected input, then deliver based on the usual filter */
TryClientEvents (pScreenPriv->client, (xEvent *) de, 1,
filters[coreEquiv], pScreenPriv->input, 0);
}
else
{
/* If the keyboard is actively grabbed, deliver a grabbed core event */
if (keybd->grab && !keybd->fromPassiveGrab)
{
core.u.u.type = coreEquiv;
core.u.u.detail = de->u.u.detail;
core.u.keyButtonPointer.time = de->u.event.time;
core.u.keyButtonPointer.eventX = de->u.event.dx;
core.u.keyButtonPointer.eventY = de->u.event.dy;
core.u.keyButtonPointer.rootX = de->u.event.dx;
core.u.keyButtonPointer.rootY = de->u.event.dy;
core.u.keyButtonPointer.state = de->u.event.state;
DeliverGrabbedEvent (&core, keybd, FALSE, 1);
}
}
}
static void
DGAProcessPointerEvent (ScreenPtr pScreen, dgaEvent *de, DeviceIntPtr mouse)
{
ButtonClassPtr butc = mouse->button;
int coreEquiv;
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
xEvent core;
coreEquiv = de->u.u.type - *XDGAEventBase;
/*
* Fill in remaining event state
*/
de->u.event.screen = pScreen->myNum;
de->u.event.state = butc->state | inputInfo.keyboard->key->state;
/*
* Keep the core state in sync by duplicating what
* CoreProcessPointerEvent does
*/
if (coreEquiv != MotionNotify)
{
register int key;
register BYTE *kptr;
int bit;
key = de->u.u.detail;
kptr = &butc->down[key >> 3];
bit = 1 << (key & 7);
switch (coreEquiv)
{
case ButtonPress:
mouse->valuator->motionHintWindow = NullWindow;
if (!(*kptr & bit))
butc->buttonsDown++;
butc->motionMask = ButtonMotionMask;
*kptr |= bit;
if (key <= 5)
butc->state |= (Button1Mask >> 1) << key;
break;
case ButtonRelease:
mouse->valuator->motionHintWindow = NullWindow;
if (*kptr & bit)
--butc->buttonsDown;
if (!butc->buttonsDown)
butc->motionMask = 0;
*kptr &= ~bit;
if (key == 0)
return;
if (key <= 5)
butc->state &= ~((Button1Mask >> 1) << key);
break;
}
}
/*
* Deliver the DGA event
*/
if (pScreenPriv->client)
{
/* If the DGA client has selected input, then deliver based on the usual filter */
TryClientEvents (pScreenPriv->client, (xEvent *) de, 1,
filters[coreEquiv], pScreenPriv->input, 0);
}
else
{
/* If the pointer is actively grabbed, deliver a grabbed core event */
if (mouse->grab && !mouse->fromPassiveGrab)
{
core.u.u.type = coreEquiv;
core.u.u.detail = de->u.u.detail;
core.u.keyButtonPointer.time = de->u.event.time;
core.u.keyButtonPointer.eventX = de->u.event.dx;
core.u.keyButtonPointer.eventY = de->u.event.dy;
core.u.keyButtonPointer.rootX = de->u.event.dx;
core.u.keyButtonPointer.rootY = de->u.event.dy;
core.u.keyButtonPointer.state = de->u.event.state;
DeliverGrabbedEvent (&core, mouse, FALSE, 1);
}
}
}
Bool
DGADeliverEvent (ScreenPtr pScreen, xEvent *e)
{
dgaEvent *de = (dgaEvent *) e;
DGAScreenPtr pScreenPriv;
int coreEquiv;
/* no DGA */
if (DGAScreenIndex < 0 || XDGAEventBase == 0)
return FALSE;
pScreenPriv = DGA_GET_SCREEN_PRIV(pScreen);
/* DGA not initialized on this screen */
if (!pScreenPriv)
return FALSE;
coreEquiv = de->u.u.type - *XDGAEventBase;
/* Not a DGA event */
if (coreEquiv < KeyPress || coreEquiv > MotionNotify)
return FALSE;
switch (coreEquiv) {
case KeyPress:
case KeyRelease:
DGAProcessKeyboardEvent (pScreen, de, inputInfo.keyboard);
break;
default:
DGAProcessPointerEvent (pScreen, de, inputInfo.pointer);
break;
}
return TRUE;
}
_X_EXPORT Bool
DGAOpenFramebuffer(
int index,
char **name,
unsigned char **mem,
int *size,
int *offset,
int *flags
){
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is available */
return (*pScreenPriv->funcs->OpenFramebuffer)(pScreenPriv->pScrn,
name, mem, size, offset, flags);
}
_X_EXPORT void
DGACloseFramebuffer(int index)
{
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
/* We rely on the extension to check that DGA is available */
if(pScreenPriv->funcs->CloseFramebuffer)
(*pScreenPriv->funcs->CloseFramebuffer)(pScreenPriv->pScrn);
}
/* For DGA 1.0 backwards compatibility only */
_X_EXPORT int
DGAGetOldDGAMode(int index)
{
DGAScreenPtr pScreenPriv = DGA_GET_SCREEN_PRIV(screenInfo.screens[index]);
ScrnInfoPtr pScrn = pScreenPriv->pScrn;
DGAModePtr mode;
int i, w, h, p;
/* We rely on the extension to check that DGA is available */
w = pScrn->currentMode->HDisplay;
h = pScrn->currentMode->VDisplay;
p = ((pScrn->displayWidth * (pScrn->bitsPerPixel >> 3)) + 3) & ~3L;
for(i = 0; i < pScreenPriv->numModes; i++) {
mode = &(pScreenPriv->modes[i]);
if((mode->viewportWidth == w) && (mode->viewportHeight == h) &&
(mode->bytesPerScanline == p) &&
(mode->bitsPerPixel == pScrn->bitsPerPixel) &&
(mode->depth == pScrn->depth)) {
return mode->num;
}
}
return 0;
}
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