315 lines
9.8 KiB
C
315 lines
9.8 KiB
C
/*
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*
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* Copyright © 2000 SuSE, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of SuSE not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. SuSE makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Keith Packard, SuSE, Inc.
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*/
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#include <dix-config.h>
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#include <stdlib.h>
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#include "mi/mi_priv.h"
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#include "fb.h"
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#include "fboverlay.h"
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#include "shmint.h"
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static DevPrivateKeyRec fbOverlayScreenPrivateKeyRec;
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#define fbOverlayScreenPrivateKey (&fbOverlayScreenPrivateKeyRec)
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DevPrivateKey
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fbOverlayGetScreenPrivateKey(void)
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{
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return fbOverlayScreenPrivateKey;
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}
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/*
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* Replace this if you want something supporting
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* multiple overlays with the same depth
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*/
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static Bool
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fbOverlayCreateWindow(WindowPtr pWin)
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{
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FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
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int i;
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PixmapPtr pPixmap;
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if (pWin->drawable.class != InputOutput)
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return TRUE;
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for (i = 0; i < pScrPriv->nlayers; i++) {
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pPixmap = pScrPriv->layer[i].u.run.pixmap;
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if (pWin->drawable.depth == pPixmap->drawable.depth) {
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dixSetPrivate(&pWin->devPrivates, fbGetWinPrivateKey(pWin), pPixmap);
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/*
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* Make sure layer keys are written correctly by
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* having non-root layers set to full while the
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* root layer is set to empty. This will cause
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* all of the layers to get painted when the root
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* is mapped
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*/
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if (!pWin->parent) {
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RegionEmpty(&pScrPriv->layer[i].u.run.region);
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}
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return TRUE;
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}
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}
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return FALSE;
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}
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static Bool
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fbOverlayCloseScreen(ScreenPtr pScreen)
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{
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FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
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int i;
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for (i = 0; i < pScrPriv->nlayers; i++) {
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dixDestroyPixmap(pScrPriv->layer[i].u.run.pixmap, 0);
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RegionUninit(&pScrPriv->layer[i].u.run.region);
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}
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return TRUE;
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}
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/*
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* Return layer containing this window
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*/
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static int
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fbOverlayWindowLayer(WindowPtr pWin)
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{
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FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
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int i;
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for (i = 0; i < pScrPriv->nlayers; i++)
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if (dixLookupPrivate(&pWin->devPrivates, fbGetWinPrivateKey(pWin)) ==
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(void *) pScrPriv->layer[i].u.run.pixmap)
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return i;
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return 0;
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}
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static Bool
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fbOverlayCreateScreenResources(ScreenPtr pScreen)
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{
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int i;
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FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
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PixmapPtr pPixmap;
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void *pbits;
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int width;
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int depth;
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BoxRec box;
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if (!miCreateScreenResources(pScreen))
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return FALSE;
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box.x1 = 0;
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box.y1 = 0;
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box.x2 = pScreen->width;
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box.y2 = pScreen->height;
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for (i = 0; i < pScrPriv->nlayers; i++) {
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pbits = pScrPriv->layer[i].u.init.pbits;
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width = pScrPriv->layer[i].u.init.width;
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depth = pScrPriv->layer[i].u.init.depth;
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pPixmap = (*pScreen->CreatePixmap) (pScreen, 0, 0, depth, 0);
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if (!pPixmap)
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return FALSE;
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if (!(*pScreen->ModifyPixmapHeader) (pPixmap, pScreen->width,
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pScreen->height, depth,
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BitsPerPixel(depth),
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PixmapBytePad(width, depth),
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pbits))
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return FALSE;
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pScrPriv->layer[i].u.run.pixmap = pPixmap;
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RegionInit(&pScrPriv->layer[i].u.run.region, &box, 0);
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}
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pScreen->devPrivate = pScrPriv->layer[0].u.run.pixmap;
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return TRUE;
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}
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static void
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fbOverlayPaintKey(DrawablePtr pDrawable,
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RegionPtr pRegion, CARD32 pixel, int layer)
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{
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fbFillRegionSolid(pDrawable, pRegion, 0,
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fbReplicatePixel(pixel, pDrawable->bitsPerPixel));
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}
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/*
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* Track visible region for each layer
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*/
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static void
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fbOverlayUpdateLayerRegion(ScreenPtr pScreen, int layer, RegionPtr prgn)
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{
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FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
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int i;
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RegionRec rgnNew;
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if (!prgn || !RegionNotEmpty(prgn))
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return;
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for (i = 0; i < pScrPriv->nlayers; i++) {
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if (i == layer) {
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/* add new piece to this fb */
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RegionUnion(&pScrPriv->layer[i].u.run.region,
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&pScrPriv->layer[i].u.run.region, prgn);
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}
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else if (RegionNotEmpty(&pScrPriv->layer[i].u.run.region)) {
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/* paint new piece with chroma key */
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RegionNull(&rgnNew);
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RegionIntersect(&rgnNew, prgn, &pScrPriv->layer[i].u.run.region);
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(*pScrPriv->PaintKey) (&pScrPriv->layer[i].u.run.pixmap->drawable,
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&rgnNew, pScrPriv->layer[i].key, i);
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RegionUninit(&rgnNew);
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/* remove piece from other fbs */
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RegionSubtract(&pScrPriv->layer[i].u.run.region,
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&pScrPriv->layer[i].u.run.region, prgn);
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}
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}
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}
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/*
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* Copy only areas in each layer containing real bits
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*/
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static void
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fbOverlayCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
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RegionRec rgnDst;
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int dx, dy;
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int i;
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RegionRec layerRgn[FB_OVERLAY_MAX];
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PixmapPtr pPixmap;
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dx = ptOldOrg.x - pWin->drawable.x;
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dy = ptOldOrg.y - pWin->drawable.y;
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/*
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* Clip to existing bits
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*/
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RegionTranslate(prgnSrc, -dx, -dy);
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RegionNull(&rgnDst);
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RegionIntersect(&rgnDst, &pWin->borderClip, prgnSrc);
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RegionTranslate(&rgnDst, dx, dy);
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/*
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* Compute the portion of each fb affected by this copy
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*/
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for (i = 0; i < pScrPriv->nlayers; i++) {
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RegionNull(&layerRgn[i]);
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RegionIntersect(&layerRgn[i], &rgnDst,
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&pScrPriv->layer[i].u.run.region);
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if (RegionNotEmpty(&layerRgn[i])) {
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RegionTranslate(&layerRgn[i], -dx, -dy);
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pPixmap = pScrPriv->layer[i].u.run.pixmap;
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miCopyRegion(&pPixmap->drawable, &pPixmap->drawable,
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0,
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&layerRgn[i], dx, dy, pScrPriv->CopyWindow, 0,
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(void *) (long) i);
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}
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}
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/*
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* Update regions
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*/
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for (i = 0; i < pScrPriv->nlayers; i++) {
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if (RegionNotEmpty(&layerRgn[i]))
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fbOverlayUpdateLayerRegion(pScreen, i, &layerRgn[i]);
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RegionUninit(&layerRgn[i]);
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}
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RegionUninit(&rgnDst);
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}
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static void
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fbOverlayWindowExposures(WindowPtr pWin, RegionPtr prgn)
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{
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fbOverlayUpdateLayerRegion(pWin->drawable.pScreen,
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fbOverlayWindowLayer(pWin), prgn);
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miWindowExposures(pWin, prgn);
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}
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Bool
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fbOverlayFinishScreenInit(ScreenPtr pScreen,
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void *pbits1,
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void *pbits2,
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int xsize,
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int ysize,
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int dpix,
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int dpiy,
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int width1,
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int width2,
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int bpp1, int bpp2, int depth1, int depth2)
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{
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VisualPtr visuals;
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DepthPtr depths;
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int nvisuals;
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int ndepths;
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VisualID defaultVisual;
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if (!dixRegisterPrivateKey
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(&fbOverlayScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
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return FALSE;
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if (bpp1 == 24 || bpp2 == 24)
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return FALSE;
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FbOverlayScrPrivPtr pScrPriv = calloc(1, sizeof(FbOverlayScrPrivRec));
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if (!pScrPriv)
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return FALSE;
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if (!fbInitVisuals(&visuals, &depths, &nvisuals, &ndepths, &depth1,
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&defaultVisual, ((unsigned long) 1 << (bpp1 - 1)) |
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((unsigned long) 1 << (bpp2 - 1)), 8)) {
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free(pScrPriv);
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return FALSE;
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}
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if (!miScreenInit(pScreen, 0, xsize, ysize, dpix, dpiy, 0,
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depth1, ndepths, depths,
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defaultVisual, nvisuals, visuals)) {
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free(pScrPriv);
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return FALSE;
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}
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/* MI thinks there's no frame buffer */
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#ifdef MITSHM
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ShmRegisterFbFuncs(pScreen);
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#endif
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pScreen->minInstalledCmaps = 1;
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pScreen->maxInstalledCmaps = 2;
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pScrPriv->nlayers = 2;
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pScrPriv->PaintKey = fbOverlayPaintKey;
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pScrPriv->CopyWindow = fbCopyWindowProc;
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pScrPriv->layer[0].u.init.pbits = pbits1;
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pScrPriv->layer[0].u.init.width = width1;
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pScrPriv->layer[0].u.init.depth = depth1;
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pScrPriv->layer[1].u.init.pbits = pbits2;
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pScrPriv->layer[1].u.init.width = width2;
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pScrPriv->layer[1].u.init.depth = depth2;
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dixSetPrivate(&pScreen->devPrivates, fbOverlayScreenPrivateKey, pScrPriv);
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/* overwrite miCloseScreen with our own */
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pScreen->CloseScreen = fbOverlayCloseScreen;
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pScreen->CreateScreenResources = fbOverlayCreateScreenResources;
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pScreen->CreateWindow = fbOverlayCreateWindow;
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pScreen->WindowExposures = fbOverlayWindowExposures;
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pScreen->CopyWindow = fbOverlayCopyWindow;
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return TRUE;
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}
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