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-rw-r--r--hw/xfree86/common/xf86DGA.c1181
1 files changed, 1181 insertions, 0 deletions
diff --git a/hw/xfree86/common/xf86DGA.c b/hw/xfree86/common/xf86DGA.c
new file mode 100644
index 000000000..1ad8b42ff
--- /dev/null
+++ b/hw/xfree86/common/xf86DGA.c
@@ -0,0 +1,1181 @@
+/*
+ Copyright (c) 1999 - The XFree86 Project, Inc.
+
+ Written by Mark Vojkovich
+*/
+/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86DGA.c,v 1.46 2002/12/03 18:17:40 tsi Exp $ */
+
+#include "xf86.h"
+#include "xf86str.h"
+#include "xf86Priv.h"
+#include "dgaproc.h"
+#include "xf86dgastr.h"
+#include "colormapst.h"
+#include "pixmapstr.h"
+#include "inputstr.h"
+#include "globals.h"
+#include "servermd.h"
+#include "micmap.h"
+#ifdef XKB
+#include "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
+);
+
+#if defined(XFree86LOADER) || !defined(XFreeXDGA)
+int *XDGAEventBase = NULL;
+#else
+int *XDGAEventBase = &DGAEventBase;
+#endif
+
+#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;
+
+
+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;
+}
+
+
+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 ***************/
+
+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;
+ }
+}
+
+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;
+}
+
+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;
+}
+
+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 */
+
+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 */
+
+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;
+}
+
+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);
+}
+
+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;
+}
+
+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 */
+
+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);
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+
+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;
+}
+
+
+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;
+ if (noXkbExtension) {
+ 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;
+ if (noXkbExtension) {
+ 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;
+}
+
+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);
+}
+
+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 */
+
+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;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 07:44:27 +0000