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-rw-r--r--services/surfaceflinger/SurfaceFlinger.cpp1909
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diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
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+++ b/services/surfaceflinger/SurfaceFlinger.cpp
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+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <math.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+
+#include <cutils/log.h>
+#include <cutils/properties.h>
+
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+#include <binder/MemoryHeapBase.h>
+
+#include <utils/String8.h>
+#include <utils/String16.h>
+#include <utils/StopWatch.h>
+
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/PixelFormat.h>
+
+#include <pixelflinger/pixelflinger.h>
+#include <GLES/gl.h>
+
+#include "clz.h"
+#include "GLExtensions.h"
+#include "Layer.h"
+#include "LayerBlur.h"
+#include "LayerBuffer.h"
+#include "LayerDim.h"
+#include "SurfaceFlinger.h"
+
+#include "DisplayHardware/DisplayHardware.h"
+
+/* ideally AID_GRAPHICS would be in a semi-public header
+ * or there would be a way to map a user/group name to its id
+ */
+#ifndef AID_GRAPHICS
+#define AID_GRAPHICS 1003
+#endif
+
+#define DISPLAY_COUNT 1
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+void SurfaceFlinger::instantiate() {
+ defaultServiceManager()->addService(
+ String16("SurfaceFlinger"), new SurfaceFlinger());
+}
+
+void SurfaceFlinger::shutdown() {
+ // we should unregister here, but not really because
+ // when (if) the service manager goes away, all the services
+ // it has a reference to will leave too.
+}
+
+// ---------------------------------------------------------------------------
+
+SurfaceFlinger::LayerVector::LayerVector(const SurfaceFlinger::LayerVector& rhs)
+ : lookup(rhs.lookup), layers(rhs.layers)
+{
+}
+
+ssize_t SurfaceFlinger::LayerVector::indexOf(
+ const sp<LayerBase>& key, size_t guess) const
+{
+ if (guess<size() && lookup.keyAt(guess) == key)
+ return guess;
+ const ssize_t i = lookup.indexOfKey(key);
+ if (i>=0) {
+ const size_t idx = lookup.valueAt(i);
+ LOGE_IF(layers[idx]!=key,
+ "LayerVector[%p]: layers[%d]=%p, key=%p",
+ this, int(idx), layers[idx].get(), key.get());
+ return idx;
+ }
+ return i;
+}
+
+ssize_t SurfaceFlinger::LayerVector::add(
+ const sp<LayerBase>& layer,
+ Vector< sp<LayerBase> >::compar_t cmp)
+{
+ size_t count = layers.size();
+ ssize_t l = 0;
+ ssize_t h = count-1;
+ ssize_t mid;
+ sp<LayerBase> const* a = layers.array();
+ while (l <= h) {
+ mid = l + (h - l)/2;
+ const int c = cmp(a+mid, &layer);
+ if (c == 0) { l = mid; break; }
+ else if (c<0) { l = mid+1; }
+ else { h = mid-1; }
+ }
+ size_t order = l;
+ while (order<count && !cmp(&layer, a+order)) {
+ order++;
+ }
+ count = lookup.size();
+ for (size_t i=0 ; i<count ; i++) {
+ if (lookup.valueAt(i) >= order) {
+ lookup.editValueAt(i)++;
+ }
+ }
+ layers.insertAt(layer, order);
+ lookup.add(layer, order);
+ return order;
+}
+
+ssize_t SurfaceFlinger::LayerVector::remove(const sp<LayerBase>& layer)
+{
+ const ssize_t keyIndex = lookup.indexOfKey(layer);
+ if (keyIndex >= 0) {
+ const size_t index = lookup.valueAt(keyIndex);
+ LOGE_IF(layers[index]!=layer,
+ "LayerVector[%p]: layers[%u]=%p, layer=%p",
+ this, int(index), layers[index].get(), layer.get());
+ layers.removeItemsAt(index);
+ lookup.removeItemsAt(keyIndex);
+ const size_t count = lookup.size();
+ for (size_t i=0 ; i<count ; i++) {
+ if (lookup.valueAt(i) >= size_t(index)) {
+ lookup.editValueAt(i)--;
+ }
+ }
+ return index;
+ }
+ return NAME_NOT_FOUND;
+}
+
+ssize_t SurfaceFlinger::LayerVector::reorder(
+ const sp<LayerBase>& layer,
+ Vector< sp<LayerBase> >::compar_t cmp)
+{
+ // XXX: it's a little lame. but oh well...
+ ssize_t err = remove(layer);
+ if (err >=0)
+ err = add(layer, cmp);
+ return err;
+}
+
+// ---------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#endif
+
+SurfaceFlinger::SurfaceFlinger()
+ : BnSurfaceComposer(), Thread(false),
+ mTransactionFlags(0),
+ mTransactionCount(0),
+ mResizeTransationPending(false),
+ mLayersRemoved(false),
+ mBootTime(systemTime()),
+ mHardwareTest("android.permission.HARDWARE_TEST"),
+ mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"),
+ mDump("android.permission.DUMP"),
+ mVisibleRegionsDirty(false),
+ mDeferReleaseConsole(false),
+ mFreezeDisplay(false),
+ mFreezeCount(0),
+ mFreezeDisplayTime(0),
+ mDebugRegion(0),
+ mDebugBackground(0),
+ mDebugInSwapBuffers(0),
+ mLastSwapBufferTime(0),
+ mDebugInTransaction(0),
+ mLastTransactionTime(0),
+ mBootFinished(false),
+ mConsoleSignals(0),
+ mSecureFrameBuffer(0)
+{
+ init();
+}
+
+void SurfaceFlinger::init()
+{
+ LOGI("SurfaceFlinger is starting");
+
+ // debugging stuff...
+ char value[PROPERTY_VALUE_MAX];
+ property_get("debug.sf.showupdates", value, "0");
+ mDebugRegion = atoi(value);
+ property_get("debug.sf.showbackground", value, "0");
+ mDebugBackground = atoi(value);
+
+ LOGI_IF(mDebugRegion, "showupdates enabled");
+ LOGI_IF(mDebugBackground, "showbackground enabled");
+}
+
+SurfaceFlinger::~SurfaceFlinger()
+{
+ glDeleteTextures(1, &mWormholeTexName);
+}
+
+overlay_control_device_t* SurfaceFlinger::getOverlayEngine() const
+{
+ return graphicPlane(0).displayHardware().getOverlayEngine();
+}
+
+sp<IMemoryHeap> SurfaceFlinger::getCblk() const
+{
+ return mServerHeap;
+}
+
+sp<ISurfaceComposerClient> SurfaceFlinger::createConnection()
+{
+ sp<ISurfaceComposerClient> bclient;
+ sp<Client> client(new Client(this));
+ status_t err = client->initCheck();
+ if (err == NO_ERROR) {
+ bclient = client;
+ }
+ return bclient;
+}
+
+sp<ISurfaceComposerClient> SurfaceFlinger::createClientConnection()
+{
+ sp<ISurfaceComposerClient> bclient;
+ sp<UserClient> client(new UserClient(this));
+ status_t err = client->initCheck();
+ if (err == NO_ERROR) {
+ bclient = client;
+ }
+ return bclient;
+}
+
+
+const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const
+{
+ LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy);
+ const GraphicPlane& plane(mGraphicPlanes[dpy]);
+ return plane;
+}
+
+GraphicPlane& SurfaceFlinger::graphicPlane(int dpy)
+{
+ return const_cast<GraphicPlane&>(
+ const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy));
+}
+
+void SurfaceFlinger::bootFinished()
+{
+ const nsecs_t now = systemTime();
+ const nsecs_t duration = now - mBootTime;
+ LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) );
+ mBootFinished = true;
+ property_set("ctl.stop", "bootanim");
+}
+
+void SurfaceFlinger::onFirstRef()
+{
+ run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY);
+
+ // Wait for the main thread to be done with its initialization
+ mReadyToRunBarrier.wait();
+}
+
+static inline uint16_t pack565(int r, int g, int b) {
+ return (r<<11)|(g<<5)|b;
+}
+
+status_t SurfaceFlinger::readyToRun()
+{
+ LOGI( "SurfaceFlinger's main thread ready to run. "
+ "Initializing graphics H/W...");
+
+ // we only support one display currently
+ int dpy = 0;
+
+ {
+ // initialize the main display
+ GraphicPlane& plane(graphicPlane(dpy));
+ DisplayHardware* const hw = new DisplayHardware(this, dpy);
+ plane.setDisplayHardware(hw);
+ }
+
+ // create the shared control-block
+ mServerHeap = new MemoryHeapBase(4096,
+ MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap");
+ LOGE_IF(mServerHeap==0, "can't create shared memory dealer");
+
+ mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase());
+ LOGE_IF(mServerCblk==0, "can't get to shared control block's address");
+
+ new(mServerCblk) surface_flinger_cblk_t;
+
+ // initialize primary screen
+ // (other display should be initialized in the same manner, but
+ // asynchronously, as they could come and go. None of this is supported
+ // yet).
+ const GraphicPlane& plane(graphicPlane(dpy));
+ const DisplayHardware& hw = plane.displayHardware();
+ const uint32_t w = hw.getWidth();
+ const uint32_t h = hw.getHeight();
+ const uint32_t f = hw.getFormat();
+ hw.makeCurrent();
+
+ // initialize the shared control block
+ mServerCblk->connected |= 1<<dpy;
+ display_cblk_t* dcblk = mServerCblk->displays + dpy;
+ memset(dcblk, 0, sizeof(display_cblk_t));
+ dcblk->w = plane.getWidth();
+ dcblk->h = plane.getHeight();
+ dcblk->format = f;
+ dcblk->orientation = ISurfaceComposer::eOrientationDefault;
+ dcblk->xdpi = hw.getDpiX();
+ dcblk->ydpi = hw.getDpiY();
+ dcblk->fps = hw.getRefreshRate();
+ dcblk->density = hw.getDensity();
+
+ // Initialize OpenGL|ES
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+ glPixelStorei(GL_PACK_ALIGNMENT, 4);
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnable(GL_SCISSOR_TEST);
+ glShadeModel(GL_FLAT);
+ glDisable(GL_DITHER);
+ glDisable(GL_CULL_FACE);
+
+ const uint16_t g0 = pack565(0x0F,0x1F,0x0F);
+ const uint16_t g1 = pack565(0x17,0x2f,0x17);
+ const uint16_t textureData[4] = { g0, g1, g1, g0 };
+ glGenTextures(1, &mWormholeTexName);
+ glBindTexture(GL_TEXTURE_2D, mWormholeTexName);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0,
+ GL_RGB, GL_UNSIGNED_SHORT_5_6_5, textureData);
+
+ glViewport(0, 0, w, h);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrthof(0, w, h, 0, 0, 1);
+
+ LayerDim::initDimmer(this, w, h);
+
+ mReadyToRunBarrier.open();
+
+ /*
+ * We're now ready to accept clients...
+ */
+
+ // start boot animation
+ property_set("ctl.start", "bootanim");
+
+ return NO_ERROR;
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark Events Handler
+#endif
+
+void SurfaceFlinger::waitForEvent()
+{
+ while (true) {
+ nsecs_t timeout = -1;
+ const nsecs_t freezeDisplayTimeout = ms2ns(5000);
+ if (UNLIKELY(isFrozen())) {
+ // wait 5 seconds
+ const nsecs_t now = systemTime();
+ if (mFreezeDisplayTime == 0) {
+ mFreezeDisplayTime = now;
+ }
+ nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime);
+ timeout = waitTime>0 ? waitTime : 0;
+ }
+
+ sp<MessageBase> msg = mEventQueue.waitMessage(timeout);
+
+ // see if we timed out
+ if (isFrozen()) {
+ const nsecs_t now = systemTime();
+ nsecs_t frozenTime = (now - mFreezeDisplayTime);
+ if (frozenTime >= freezeDisplayTimeout) {
+ // we timed out and are still frozen
+ LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d",
+ mFreezeDisplay, mFreezeCount);
+ mFreezeDisplayTime = 0;
+ mFreezeCount = 0;
+ mFreezeDisplay = false;
+ }
+ }
+
+ if (msg != 0) {
+ switch (msg->what) {
+ case MessageQueue::INVALIDATE:
+ // invalidate message, just return to the main loop
+ return;
+ }
+ }
+ }
+}
+
+void SurfaceFlinger::signalEvent() {
+ mEventQueue.invalidate();
+}
+
+void SurfaceFlinger::signal() const {
+ // this is the IPC call
+ const_cast<SurfaceFlinger*>(this)->signalEvent();
+}
+
+status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg,
+ nsecs_t reltime, uint32_t flags)
+{
+ return mEventQueue.postMessage(msg, reltime, flags);
+}
+
+status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
+ nsecs_t reltime, uint32_t flags)
+{
+ status_t res = mEventQueue.postMessage(msg, reltime, flags);
+ if (res == NO_ERROR) {
+ msg->wait();
+ }
+ return res;
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark Main loop
+#endif
+
+bool SurfaceFlinger::threadLoop()
+{
+ waitForEvent();
+
+ // check for transactions
+ if (UNLIKELY(mConsoleSignals)) {
+ handleConsoleEvents();
+ }
+
+ if (LIKELY(mTransactionCount == 0)) {
+ // if we're in a global transaction, don't do anything.
+ const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
+ uint32_t transactionFlags = getTransactionFlags(mask);
+ if (LIKELY(transactionFlags)) {
+ handleTransaction(transactionFlags);
+ }
+ }
+
+ // post surfaces (if needed)
+ handlePageFlip();
+
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ if (LIKELY(hw.canDraw() && !isFrozen())) {
+ // repaint the framebuffer (if needed)
+ handleRepaint();
+
+ // inform the h/w that we're done compositing
+ hw.compositionComplete();
+
+ // release the clients before we flip ('cause flip might block)
+ unlockClients();
+
+ postFramebuffer();
+ } else {
+ // pretend we did the post
+ unlockClients();
+ usleep(16667); // 60 fps period
+ }
+ return true;
+}
+
+void SurfaceFlinger::postFramebuffer()
+{
+ if (!mInvalidRegion.isEmpty()) {
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ const nsecs_t now = systemTime();
+ mDebugInSwapBuffers = now;
+ hw.flip(mInvalidRegion);
+ mLastSwapBufferTime = systemTime() - now;
+ mDebugInSwapBuffers = 0;
+ mInvalidRegion.clear();
+ }
+}
+
+void SurfaceFlinger::handleConsoleEvents()
+{
+ // something to do with the console
+ const DisplayHardware& hw = graphicPlane(0).displayHardware();
+
+ int what = android_atomic_and(0, &mConsoleSignals);
+ if (what & eConsoleAcquired) {
+ hw.acquireScreen();
+ }
+
+ if (mDeferReleaseConsole && hw.canDraw()) {
+ // We got the release signal before the acquire signal
+ mDeferReleaseConsole = false;
+ hw.releaseScreen();
+ }
+
+ if (what & eConsoleReleased) {
+ if (hw.canDraw()) {
+ hw.releaseScreen();
+ } else {
+ mDeferReleaseConsole = true;
+ }
+ }
+
+ mDirtyRegion.set(hw.bounds());
+}
+
+void SurfaceFlinger::handleTransaction(uint32_t transactionFlags)
+{
+ Vector< sp<LayerBase> > ditchedLayers;
+
+ { // scope for the lock
+ Mutex::Autolock _l(mStateLock);
+ const nsecs_t now = systemTime();
+ mDebugInTransaction = now;
+ handleTransactionLocked(transactionFlags, ditchedLayers);
+ mLastTransactionTime = systemTime() - now;
+ mDebugInTransaction = 0;
+ }
+
+ // do this without lock held
+ const size_t count = ditchedLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ if (ditchedLayers[i] != 0) {
+ //LOGD("ditching layer %p", ditchedLayers[i].get());
+ ditchedLayers[i]->ditch();
+ }
+ }
+}
+
+void SurfaceFlinger::handleTransactionLocked(
+ uint32_t transactionFlags, Vector< sp<LayerBase> >& ditchedLayers)
+{
+ const LayerVector& currentLayers(mCurrentState.layersSortedByZ);
+ const size_t count = currentLayers.size();
+
+ /*
+ * Traversal of the children
+ * (perform the transaction for each of them if needed)
+ */
+
+ const bool layersNeedTransaction = transactionFlags & eTraversalNeeded;
+ if (layersNeedTransaction) {
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<LayerBase>& layer = currentLayers[i];
+ uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded);
+ if (!trFlags) continue;
+
+ const uint32_t flags = layer->doTransaction(0);
+ if (flags & Layer::eVisibleRegion)
+ mVisibleRegionsDirty = true;
+ }
+ }
+
+ /*
+ * Perform our own transaction if needed
+ */
+
+ if (transactionFlags & eTransactionNeeded) {
+ if (mCurrentState.orientation != mDrawingState.orientation) {
+ // the orientation has changed, recompute all visible regions
+ // and invalidate everything.
+
+ const int dpy = 0;
+ const int orientation = mCurrentState.orientation;
+ const uint32_t type = mCurrentState.orientationType;
+ GraphicPlane& plane(graphicPlane(dpy));
+ plane.setOrientation(orientation);
+
+ // update the shared control block
+ const DisplayHardware& hw(plane.displayHardware());
+ volatile display_cblk_t* dcblk = mServerCblk->displays + dpy;
+ dcblk->orientation = orientation;
+ dcblk->w = plane.getWidth();
+ dcblk->h = plane.getHeight();
+
+ mVisibleRegionsDirty = true;
+ mDirtyRegion.set(hw.bounds());
+ }
+
+ if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) {
+ // freezing or unfreezing the display -> trigger animation if needed
+ mFreezeDisplay = mCurrentState.freezeDisplay;
+ if (mFreezeDisplay)
+ mFreezeDisplayTime = 0;
+ }
+
+ if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) {
+ // layers have been added
+ mVisibleRegionsDirty = true;
+ }
+
+ // some layers might have been removed, so
+ // we need to update the regions they're exposing.
+ if (mLayersRemoved) {
+ mLayersRemoved = false;
+ mVisibleRegionsDirty = true;
+ const LayerVector& previousLayers(mDrawingState.layersSortedByZ);
+ const size_t count = previousLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<LayerBase>& layer(previousLayers[i]);
+ if (currentLayers.indexOf( layer ) < 0) {
+ // this layer is not visible anymore
+ ditchedLayers.add(layer);
+ mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen);
+ }
+ }
+ }
+ }
+
+ commitTransaction();
+}
+
+sp<FreezeLock> SurfaceFlinger::getFreezeLock() const
+{
+ return new FreezeLock(const_cast<SurfaceFlinger *>(this));
+}
+
+void SurfaceFlinger::computeVisibleRegions(
+ LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion)
+{
+ const GraphicPlane& plane(graphicPlane(0));
+ const Transform& planeTransform(plane.transform());
+ const DisplayHardware& hw(plane.displayHardware());
+ const Region screenRegion(hw.bounds());
+
+ Region aboveOpaqueLayers;
+ Region aboveCoveredLayers;
+ Region dirty;
+
+ bool secureFrameBuffer = false;
+
+ size_t i = currentLayers.size();
+ while (i--) {
+ const sp<LayerBase>& layer = currentLayers[i];
+ layer->validateVisibility(planeTransform);
+
+ // start with the whole surface at its current location
+ const Layer::State& s(layer->drawingState());
+
+ /*
+ * opaqueRegion: area of a surface that is fully opaque.
+ */
+ Region opaqueRegion;
+
+ /*
+ * visibleRegion: area of a surface that is visible on screen
+ * and not fully transparent. This is essentially the layer's
+ * footprint minus the opaque regions above it.
+ * Areas covered by a translucent surface are considered visible.
+ */
+ Region visibleRegion;
+
+ /*
+ * coveredRegion: area of a surface that is covered by all
+ * visible regions above it (which includes the translucent areas).
+ */
+ Region coveredRegion;
+
+
+ // handle hidden surfaces by setting the visible region to empty
+ if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) {
+ const bool translucent = layer->needsBlending();
+ const Rect bounds(layer->visibleBounds());
+ visibleRegion.set(bounds);
+ visibleRegion.andSelf(screenRegion);
+ if (!visibleRegion.isEmpty()) {
+ // Remove the transparent area from the visible region
+ if (translucent) {
+ visibleRegion.subtractSelf(layer->transparentRegionScreen);
+ }
+
+ // compute the opaque region
+ const int32_t layerOrientation = layer->getOrientation();
+ if (s.alpha==255 && !translucent &&
+ ((layerOrientation & Transform::ROT_INVALID) == false)) {
+ // the opaque region is the layer's footprint
+ opaqueRegion = visibleRegion;
+ }
+ }
+ }
+
+ // Clip the covered region to the visible region
+ coveredRegion = aboveCoveredLayers.intersect(visibleRegion);
+
+ // Update aboveCoveredLayers for next (lower) layer
+ aboveCoveredLayers.orSelf(visibleRegion);
+
+ // subtract the opaque region covered by the layers above us
+ visibleRegion.subtractSelf(aboveOpaqueLayers);
+
+ // compute this layer's dirty region
+ if (layer->contentDirty) {
+ // we need to invalidate the whole region
+ dirty = visibleRegion;
+ // as well, as the old visible region
+ dirty.orSelf(layer->visibleRegionScreen);
+ layer->contentDirty = false;
+ } else {
+ /* compute the exposed region:
+ * the exposed region consists of two components:
+ * 1) what's VISIBLE now and was COVERED before
+ * 2) what's EXPOSED now less what was EXPOSED before
+ *
+ * note that (1) is conservative, we start with the whole
+ * visible region but only keep what used to be covered by
+ * something -- which mean it may have been exposed.
+ *
+ * (2) handles areas that were not covered by anything but got
+ * exposed because of a resize.
+ */
+ const Region newExposed = visibleRegion - coveredRegion;
+ const Region oldVisibleRegion = layer->visibleRegionScreen;
+ const Region oldCoveredRegion = layer->coveredRegionScreen;
+ const Region oldExposed = oldVisibleRegion - oldCoveredRegion;
+ dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed);
+ }
+ dirty.subtractSelf(aboveOpaqueLayers);
+
+ // accumulate to the screen dirty region
+ dirtyRegion.orSelf(dirty);
+
+ // Update aboveOpaqueLayers for next (lower) layer
+ aboveOpaqueLayers.orSelf(opaqueRegion);
+
+ // Store the visible region is screen space
+ layer->setVisibleRegion(visibleRegion);
+ layer->setCoveredRegion(coveredRegion);
+
+ // If a secure layer is partially visible, lock-down the screen!
+ if (layer->isSecure() && !visibleRegion.isEmpty()) {
+ secureFrameBuffer = true;
+ }
+ }
+
+ // invalidate the areas where a layer was removed
+ dirtyRegion.orSelf(mDirtyRegionRemovedLayer);
+ mDirtyRegionRemovedLayer.clear();
+
+ mSecureFrameBuffer = secureFrameBuffer;
+ opaqueRegion = aboveOpaqueLayers;
+}
+
+
+void SurfaceFlinger::commitTransaction()
+{
+ mDrawingState = mCurrentState;
+ mResizeTransationPending = false;
+ mTransactionCV.broadcast();
+}
+
+void SurfaceFlinger::handlePageFlip()
+{
+ bool visibleRegions = mVisibleRegionsDirty;
+ LayerVector& currentLayers = const_cast<LayerVector&>(
+ mDrawingState.layersSortedByZ);
+ visibleRegions |= lockPageFlip(currentLayers);
+
+ const DisplayHardware& hw = graphicPlane(0).displayHardware();
+ const Region screenRegion(hw.bounds());
+ if (visibleRegions) {
+ Region opaqueRegion;
+ computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion);
+ mWormholeRegion = screenRegion.subtract(opaqueRegion);
+ mVisibleRegionsDirty = false;
+ }
+
+ unlockPageFlip(currentLayers);
+ mDirtyRegion.andSelf(screenRegion);
+}
+
+bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers)
+{
+ bool recomputeVisibleRegions = false;
+ size_t count = currentLayers.size();
+ sp<LayerBase> const* layers = currentLayers.array();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<LayerBase>& layer(layers[i]);
+ layer->lockPageFlip(recomputeVisibleRegions);
+ }
+ return recomputeVisibleRegions;
+}
+
+void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers)
+{
+ const GraphicPlane& plane(graphicPlane(0));
+ const Transform& planeTransform(plane.transform());
+ size_t count = currentLayers.size();
+ sp<LayerBase> const* layers = currentLayers.array();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<LayerBase>& layer(layers[i]);
+ layer->unlockPageFlip(planeTransform, mDirtyRegion);
+ }
+}
+
+
+void SurfaceFlinger::handleRepaint()
+{
+ // compute the invalid region
+ mInvalidRegion.orSelf(mDirtyRegion);
+ if (mInvalidRegion.isEmpty()) {
+ // nothing to do
+ return;
+ }
+
+ if (UNLIKELY(mDebugRegion)) {
+ debugFlashRegions();
+ }
+
+ // set the frame buffer
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+
+ uint32_t flags = hw.getFlags();
+ if ((flags & DisplayHardware::SWAP_RECTANGLE) ||
+ (flags & DisplayHardware::BUFFER_PRESERVED))
+ {
+ // we can redraw only what's dirty, but since SWAP_RECTANGLE only
+ // takes a rectangle, we must make sure to update that whole
+ // rectangle in that case
+ if (flags & DisplayHardware::SWAP_RECTANGLE) {
+ // TODO: we really should be able to pass a region to
+ // SWAP_RECTANGLE so that we don't have to redraw all this.
+ mDirtyRegion.set(mInvalidRegion.bounds());
+ } else {
+ // in the BUFFER_PRESERVED case, obviously, we can update only
+ // what's needed and nothing more.
+ // NOTE: this is NOT a common case, as preserving the backbuffer
+ // is costly and usually involves copying the whole update back.
+ }
+ } else {
+ if (flags & DisplayHardware::PARTIAL_UPDATES) {
+ // We need to redraw the rectangle that will be updated
+ // (pushed to the framebuffer).
+ // This is needed because PARTIAL_UPDATES only takes one
+ // rectangle instead of a region (see DisplayHardware::flip())
+ mDirtyRegion.set(mInvalidRegion.bounds());
+ } else {
+ // we need to redraw everything (the whole screen)
+ mDirtyRegion.set(hw.bounds());
+ mInvalidRegion = mDirtyRegion;
+ }
+ }
+
+ // compose all surfaces
+ composeSurfaces(mDirtyRegion);
+
+ // clear the dirty regions
+ mDirtyRegion.clear();
+}
+
+void SurfaceFlinger::composeSurfaces(const Region& dirty)
+{
+ if (UNLIKELY(!mWormholeRegion.isEmpty())) {
+ // should never happen unless the window manager has a bug
+ // draw something...
+ drawWormhole();
+ }
+ const SurfaceFlinger& flinger(*this);
+ const LayerVector& drawingLayers(mDrawingState.layersSortedByZ);
+ const size_t count = drawingLayers.size();
+ sp<LayerBase> const* const layers = drawingLayers.array();
+ for (size_t i=0 ; i<count ; ++i) {
+ const sp<LayerBase>& layer = layers[i];
+ const Region& visibleRegion(layer->visibleRegionScreen);
+ if (!visibleRegion.isEmpty()) {
+ const Region clip(dirty.intersect(visibleRegion));
+ if (!clip.isEmpty()) {
+ layer->draw(clip);
+ }
+ }
+ }
+}
+
+void SurfaceFlinger::unlockClients()
+{
+ const LayerVector& drawingLayers(mDrawingState.layersSortedByZ);
+ const size_t count = drawingLayers.size();
+ sp<LayerBase> const* const layers = drawingLayers.array();
+ for (size_t i=0 ; i<count ; ++i) {
+ const sp<LayerBase>& layer = layers[i];
+ layer->finishPageFlip();
+ }
+}
+
+void SurfaceFlinger::debugFlashRegions()
+{
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ const uint32_t flags = hw.getFlags();
+
+ if (!((flags & DisplayHardware::SWAP_RECTANGLE) ||
+ (flags & DisplayHardware::BUFFER_PRESERVED))) {
+ const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ?
+ mDirtyRegion.bounds() : hw.bounds());
+ composeSurfaces(repaint);
+ }
+
+ TextureManager::deactivateTextures();
+
+ glDisable(GL_BLEND);
+ glDisable(GL_DITHER);
+ glDisable(GL_SCISSOR_TEST);
+
+ static int toggle = 0;
+ toggle = 1 - toggle;
+ if (toggle) {
+ glColor4f(1, 0, 1, 1);
+ } else {
+ glColor4f(1, 1, 0, 1);
+ }
+
+ Region::const_iterator it = mDirtyRegion.begin();
+ Region::const_iterator const end = mDirtyRegion.end();
+ while (it != end) {
+ const Rect& r = *it++;
+ GLfloat vertices[][2] = {
+ { r.left, r.top },
+ { r.left, r.bottom },
+ { r.right, r.bottom },
+ { r.right, r.top }
+ };
+ glVertexPointer(2, GL_FLOAT, 0, vertices);
+ glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ }
+
+ if (mInvalidRegion.isEmpty()) {
+ mDirtyRegion.dump("mDirtyRegion");
+ mInvalidRegion.dump("mInvalidRegion");
+ }
+ hw.flip(mInvalidRegion);
+
+ if (mDebugRegion > 1)
+ usleep(mDebugRegion * 1000);
+
+ glEnable(GL_SCISSOR_TEST);
+ //mDirtyRegion.dump("mDirtyRegion");
+}
+
+void SurfaceFlinger::drawWormhole() const
+{
+ const Region region(mWormholeRegion.intersect(mDirtyRegion));
+ if (region.isEmpty())
+ return;
+
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ const int32_t width = hw.getWidth();
+ const int32_t height = hw.getHeight();
+
+ glDisable(GL_BLEND);
+ glDisable(GL_DITHER);
+
+ if (LIKELY(!mDebugBackground)) {
+ glClearColor(0,0,0,0);
+ Region::const_iterator it = region.begin();
+ Region::const_iterator const end = region.end();
+ while (it != end) {
+ const Rect& r = *it++;
+ const GLint sy = height - (r.top + r.height());
+ glScissor(r.left, sy, r.width(), r.height());
+ glClear(GL_COLOR_BUFFER_BIT);
+ }
+ } else {
+ const GLshort vertices[][2] = { { 0, 0 }, { width, 0 },
+ { width, height }, { 0, height } };
+ const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } };
+ glVertexPointer(2, GL_SHORT, 0, vertices);
+ glTexCoordPointer(2, GL_SHORT, 0, tcoords);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+#if defined(GL_OES_texture_external)
+ if (GLExtensions::getInstance().haveTextureExternal()) {
+ glDisable(GL_TEXTURE_EXTERNAL_OES);
+ }
+#endif
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, mWormholeTexName);
+ glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glMatrixMode(GL_TEXTURE);
+ glLoadIdentity();
+ glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1);
+ Region::const_iterator it = region.begin();
+ Region::const_iterator const end = region.end();
+ while (it != end) {
+ const Rect& r = *it++;
+ const GLint sy = height - (r.top + r.height());
+ glScissor(r.left, sy, r.width(), r.height());
+ glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ }
+ glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+ }
+}
+
+void SurfaceFlinger::debugShowFPS() const
+{
+ static int mFrameCount;
+ static int mLastFrameCount = 0;
+ static nsecs_t mLastFpsTime = 0;
+ static float mFps = 0;
+ mFrameCount++;
+ nsecs_t now = systemTime();
+ nsecs_t diff = now - mLastFpsTime;
+ if (diff > ms2ns(250)) {
+ mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff;
+ mLastFpsTime = now;
+ mLastFrameCount = mFrameCount;
+ }
+ // XXX: mFPS has the value we want
+ }
+
+status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer)
+{
+ Mutex::Autolock _l(mStateLock);
+ addLayer_l(layer);
+ setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer)
+{
+ ssize_t i = mCurrentState.layersSortedByZ.add(
+ layer, &LayerBase::compareCurrentStateZ);
+ return (i < 0) ? status_t(i) : status_t(NO_ERROR);
+}
+
+ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client,
+ const sp<LayerBaseClient>& lbc)
+{
+ Mutex::Autolock _l(mStateLock);
+
+ // attach this layer to the client
+ ssize_t name = client->attachLayer(lbc);
+
+ // add this layer to the current state list
+ addLayer_l(lbc);
+
+ return name;
+}
+
+status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer)
+{
+ Mutex::Autolock _l(mStateLock);
+ status_t err = purgatorizeLayer_l(layer);
+ if (err == NO_ERROR)
+ setTransactionFlags(eTransactionNeeded);
+ return err;
+}
+
+status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase)
+{
+ sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient());
+ if (lbc != 0) {
+ mLayerMap.removeItem( lbc->getSurface()->asBinder() );
+ }
+ ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase);
+ if (index >= 0) {
+ mLayersRemoved = true;
+ return NO_ERROR;
+ }
+ return status_t(index);
+}
+
+status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase)
+{
+ // remove the layer from the main list (through a transaction).
+ ssize_t err = removeLayer_l(layerBase);
+
+ layerBase->onRemoved();
+
+ // it's possible that we don't find a layer, because it might
+ // have been destroyed already -- this is not technically an error
+ // from the user because there is a race between Client::destroySurface(),
+ // ~Client() and ~ISurface().
+ return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err;
+}
+
+status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer)
+{
+ layer->forceVisibilityTransaction();
+ setTransactionFlags(eTraversalNeeded);
+ return NO_ERROR;
+}
+
+uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags)
+{
+ return android_atomic_and(~flags, &mTransactionFlags) & flags;
+}
+
+uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags)
+{
+ uint32_t old = android_atomic_or(flags, &mTransactionFlags);
+ if ((old & flags)==0) { // wake the server up
+ signalEvent();
+ }
+ return old;
+}
+
+void SurfaceFlinger::openGlobalTransaction()
+{
+ android_atomic_inc(&mTransactionCount);
+}
+
+void SurfaceFlinger::closeGlobalTransaction()
+{
+ if (android_atomic_dec(&mTransactionCount) == 1) {
+ signalEvent();
+
+ // if there is a transaction with a resize, wait for it to
+ // take effect before returning.
+ Mutex::Autolock _l(mStateLock);
+ while (mResizeTransationPending) {
+ status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5));
+ if (CC_UNLIKELY(err != NO_ERROR)) {
+ // just in case something goes wrong in SF, return to the
+ // called after a few seconds.
+ LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!");
+ mResizeTransationPending = false;
+ break;
+ }
+ }
+ }
+}
+
+status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags)
+{
+ if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
+ return BAD_VALUE;
+
+ Mutex::Autolock _l(mStateLock);
+ mCurrentState.freezeDisplay = 1;
+ setTransactionFlags(eTransactionNeeded);
+
+ // flags is intended to communicate some sort of animation behavior
+ // (for instance fading)
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags)
+{
+ if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
+ return BAD_VALUE;
+
+ Mutex::Autolock _l(mStateLock);
+ mCurrentState.freezeDisplay = 0;
+ setTransactionFlags(eTransactionNeeded);
+
+ // flags is intended to communicate some sort of animation behavior
+ // (for instance fading)
+ return NO_ERROR;
+}
+
+int SurfaceFlinger::setOrientation(DisplayID dpy,
+ int orientation, uint32_t flags)
+{
+ if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
+ return BAD_VALUE;
+
+ Mutex::Autolock _l(mStateLock);
+ if (mCurrentState.orientation != orientation) {
+ if (uint32_t(orientation)<=eOrientation270 || orientation==42) {
+ mCurrentState.orientationType = flags;
+ mCurrentState.orientation = orientation;
+ setTransactionFlags(eTransactionNeeded);
+ mTransactionCV.wait(mStateLock);
+ } else {
+ orientation = BAD_VALUE;
+ }
+ }
+ return orientation;
+}
+
+sp<ISurface> SurfaceFlinger::createSurface(const sp<Client>& client, int pid,
+ const String8& name, ISurfaceComposerClient::surface_data_t* params,
+ DisplayID d, uint32_t w, uint32_t h, PixelFormat format,
+ uint32_t flags)
+{
+ sp<LayerBaseClient> layer;
+ sp<LayerBaseClient::Surface> surfaceHandle;
+
+ if (int32_t(w|h) < 0) {
+ LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)",
+ int(w), int(h));
+ return surfaceHandle;
+ }
+
+ //LOGD("createSurface for pid %d (%d x %d)", pid, w, h);
+ sp<Layer> normalLayer;
+ switch (flags & eFXSurfaceMask) {
+ case eFXSurfaceNormal:
+ if (UNLIKELY(flags & ePushBuffers)) {
+ layer = createPushBuffersSurface(client, d, w, h, flags);
+ } else {
+ normalLayer = createNormalSurface(client, d, w, h, flags, format);
+ layer = normalLayer;
+ }
+ break;
+ case eFXSurfaceBlur:
+ layer = createBlurSurface(client, d, w, h, flags);
+ break;
+ case eFXSurfaceDim:
+ layer = createDimSurface(client, d, w, h, flags);
+ break;
+ }
+
+ if (layer != 0) {
+ layer->initStates(w, h, flags);
+ layer->setName(name);
+ ssize_t token = addClientLayer(client, layer);
+
+ surfaceHandle = layer->getSurface();
+ if (surfaceHandle != 0) {
+ params->token = token;
+ params->identity = surfaceHandle->getIdentity();
+ params->width = w;
+ params->height = h;
+ params->format = format;
+ if (normalLayer != 0) {
+ Mutex::Autolock _l(mStateLock);
+ mLayerMap.add(surfaceHandle->asBinder(), normalLayer);
+ }
+ }
+
+ setTransactionFlags(eTransactionNeeded);
+ }
+
+ return surfaceHandle;
+}
+
+sp<Layer> SurfaceFlinger::createNormalSurface(
+ const sp<Client>& client, DisplayID display,
+ uint32_t w, uint32_t h, uint32_t flags,
+ PixelFormat& format)
+{
+ // initialize the surfaces
+ switch (format) { // TODO: take h/w into account
+ case PIXEL_FORMAT_TRANSPARENT:
+ case PIXEL_FORMAT_TRANSLUCENT:
+ format = PIXEL_FORMAT_RGBA_8888;
+ break;
+ case PIXEL_FORMAT_OPAQUE:
+#ifdef NO_RGBX_8888
+ format = PIXEL_FORMAT_RGB_565;
+#else
+ format = PIXEL_FORMAT_RGBX_8888;
+#endif
+ break;
+ }
+
+#ifdef NO_RGBX_8888
+ if (format == PIXEL_FORMAT_RGBX_8888)
+ format = PIXEL_FORMAT_RGBA_8888;
+#endif
+
+ sp<Layer> layer = new Layer(this, display, client);
+ status_t err = layer->setBuffers(w, h, format, flags);
+ if (LIKELY(err != NO_ERROR)) {
+ LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err));
+ layer.clear();
+ }
+ return layer;
+}
+
+sp<LayerBlur> SurfaceFlinger::createBlurSurface(
+ const sp<Client>& client, DisplayID display,
+ uint32_t w, uint32_t h, uint32_t flags)
+{
+ sp<LayerBlur> layer = new LayerBlur(this, display, client);
+ layer->initStates(w, h, flags);
+ return layer;
+}
+
+sp<LayerDim> SurfaceFlinger::createDimSurface(
+ const sp<Client>& client, DisplayID display,
+ uint32_t w, uint32_t h, uint32_t flags)
+{
+ sp<LayerDim> layer = new LayerDim(this, display, client);
+ layer->initStates(w, h, flags);
+ return layer;
+}
+
+sp<LayerBuffer> SurfaceFlinger::createPushBuffersSurface(
+ const sp<Client>& client, DisplayID display,
+ uint32_t w, uint32_t h, uint32_t flags)
+{
+ sp<LayerBuffer> layer = new LayerBuffer(this, display, client);
+ layer->initStates(w, h, flags);
+ return layer;
+}
+
+status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid)
+{
+ /*
+ * called by the window manager, when a surface should be marked for
+ * destruction.
+ *
+ * The surface is removed from the current and drawing lists, but placed
+ * in the purgatory queue, so it's not destroyed right-away (we need
+ * to wait for all client's references to go away first).
+ */
+
+ status_t err = NAME_NOT_FOUND;
+ Mutex::Autolock _l(mStateLock);
+ sp<LayerBaseClient> layer = client->getLayerUser(sid);
+ if (layer != 0) {
+ err = purgatorizeLayer_l(layer);
+ if (err == NO_ERROR) {
+ setTransactionFlags(eTransactionNeeded);
+ }
+ }
+ return err;
+}
+
+status_t SurfaceFlinger::destroySurface(const sp<LayerBaseClient>& layer)
+{
+ // called by ~ISurface() when all references are gone
+
+ class MessageDestroySurface : public MessageBase {
+ SurfaceFlinger* flinger;
+ sp<LayerBaseClient> layer;
+ public:
+ MessageDestroySurface(
+ SurfaceFlinger* flinger, const sp<LayerBaseClient>& layer)
+ : flinger(flinger), layer(layer) { }
+ virtual bool handler() {
+ sp<LayerBaseClient> l(layer);
+ layer.clear(); // clear it outside of the lock;
+ Mutex::Autolock _l(flinger->mStateLock);
+ /*
+ * remove the layer from the current list -- chances are that it's
+ * not in the list anyway, because it should have been removed
+ * already upon request of the client (eg: window manager).
+ * However, a buggy client could have not done that.
+ * Since we know we don't have any more clients, we don't need
+ * to use the purgatory.
+ */
+ status_t err = flinger->removeLayer_l(l);
+ LOGE_IF(err<0 && err != NAME_NOT_FOUND,
+ "error removing layer=%p (%s)", l.get(), strerror(-err));
+ return true;
+ }
+ };
+
+ postMessageAsync( new MessageDestroySurface(this, layer) );
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::setClientState(
+ const sp<Client>& client,
+ int32_t count,
+ const layer_state_t* states)
+{
+ Mutex::Autolock _l(mStateLock);
+ uint32_t flags = 0;
+ for (int i=0 ; i<count ; i++) {
+ const layer_state_t& s(states[i]);
+ sp<LayerBaseClient> layer(client->getLayerUser(s.surface));
+ if (layer != 0) {
+ const uint32_t what = s.what;
+ if (what & ePositionChanged) {
+ if (layer->setPosition(s.x, s.y))
+ flags |= eTraversalNeeded;
+ }
+ if (what & eLayerChanged) {
+ if (layer->setLayer(s.z)) {
+ mCurrentState.layersSortedByZ.reorder(
+ layer, &Layer::compareCurrentStateZ);
+ // we need traversal (state changed)
+ // AND transaction (list changed)
+ flags |= eTransactionNeeded|eTraversalNeeded;
+ }
+ }
+ if (what & eSizeChanged) {
+ if (layer->setSize(s.w, s.h)) {
+ flags |= eTraversalNeeded;
+ mResizeTransationPending = true;
+ }
+ }
+ if (what & eAlphaChanged) {
+ if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f)))
+ flags |= eTraversalNeeded;
+ }
+ if (what & eMatrixChanged) {
+ if (layer->setMatrix(s.matrix))
+ flags |= eTraversalNeeded;
+ }
+ if (what & eTransparentRegionChanged) {
+ if (layer->setTransparentRegionHint(s.transparentRegion))
+ flags |= eTraversalNeeded;
+ }
+ if (what & eVisibilityChanged) {
+ if (layer->setFlags(s.flags, s.mask))
+ flags |= eTraversalNeeded;
+ }
+ }
+ }
+ if (flags) {
+ setTransactionFlags(flags);
+ }
+ return NO_ERROR;
+}
+
+void SurfaceFlinger::screenReleased(int dpy)
+{
+ // this may be called by a signal handler, we can't do too much in here
+ android_atomic_or(eConsoleReleased, &mConsoleSignals);
+ signalEvent();
+}
+
+void SurfaceFlinger::screenAcquired(int dpy)
+{
+ // this may be called by a signal handler, we can't do too much in here
+ android_atomic_or(eConsoleAcquired, &mConsoleSignals);
+ signalEvent();
+}
+
+status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args)
+{
+ const size_t SIZE = 1024;
+ char buffer[SIZE];
+ String8 result;
+ if (!mDump.checkCalling()) {
+ snprintf(buffer, SIZE, "Permission Denial: "
+ "can't dump SurfaceFlinger from pid=%d, uid=%d\n",
+ IPCThreadState::self()->getCallingPid(),
+ IPCThreadState::self()->getCallingUid());
+ result.append(buffer);
+ } else {
+
+ // figure out if we're stuck somewhere
+ const nsecs_t now = systemTime();
+ const nsecs_t inSwapBuffers(mDebugInSwapBuffers);
+ const nsecs_t inTransaction(mDebugInTransaction);
+ nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0;
+ nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0;
+
+ // Try to get the main lock, but don't insist if we can't
+ // (this would indicate SF is stuck, but we want to be able to
+ // print something in dumpsys).
+ int retry = 3;
+ while (mStateLock.tryLock()<0 && --retry>=0) {
+ usleep(1000000);
+ }
+ const bool locked(retry >= 0);
+ if (!locked) {
+ snprintf(buffer, SIZE,
+ "SurfaceFlinger appears to be unresponsive, "
+ "dumping anyways (no locks held)\n");
+ result.append(buffer);
+ }
+
+ const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
+ const size_t count = currentLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<LayerBase>& layer(currentLayers[i]);
+ layer->dump(result, buffer, SIZE);
+ const Layer::State& s(layer->drawingState());
+ s.transparentRegion.dump(result, "transparentRegion");
+ layer->transparentRegionScreen.dump(result, "transparentRegionScreen");
+ layer->visibleRegionScreen.dump(result, "visibleRegionScreen");
+ }
+
+ mWormholeRegion.dump(result, "WormholeRegion");
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ snprintf(buffer, SIZE,
+ " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n",
+ mFreezeDisplay?"yes":"no", mFreezeCount,
+ mCurrentState.orientation, hw.canDraw());
+ result.append(buffer);
+ snprintf(buffer, SIZE,
+ " last eglSwapBuffers() time: %f us\n"
+ " last transaction time : %f us\n",
+ mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0);
+ result.append(buffer);
+
+ if (inSwapBuffersDuration || !locked) {
+ snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n",
+ inSwapBuffersDuration/1000.0);
+ result.append(buffer);
+ }
+
+ if (inTransactionDuration || !locked) {
+ snprintf(buffer, SIZE, " transaction time: %f us\n",
+ inTransactionDuration/1000.0);
+ result.append(buffer);
+ }
+
+ const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+ alloc.dump(result);
+
+ if (locked) {
+ mStateLock.unlock();
+ }
+ }
+ write(fd, result.string(), result.size());
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::onTransact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ switch (code) {
+ case CREATE_CONNECTION:
+ case OPEN_GLOBAL_TRANSACTION:
+ case CLOSE_GLOBAL_TRANSACTION:
+ case SET_ORIENTATION:
+ case FREEZE_DISPLAY:
+ case UNFREEZE_DISPLAY:
+ case BOOT_FINISHED:
+ {
+ // codes that require permission check
+ IPCThreadState* ipc = IPCThreadState::self();
+ const int pid = ipc->getCallingPid();
+ const int uid = ipc->getCallingUid();
+ if ((uid != AID_GRAPHICS) && !mAccessSurfaceFlinger.check(pid, uid)) {
+ LOGE("Permission Denial: "
+ "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
+ return PERMISSION_DENIED;
+ }
+ }
+ }
+ status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags);
+ if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ if (UNLIKELY(!mHardwareTest.checkCalling())) {
+ IPCThreadState* ipc = IPCThreadState::self();
+ const int pid = ipc->getCallingPid();
+ const int uid = ipc->getCallingUid();
+ LOGE("Permission Denial: "
+ "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
+ return PERMISSION_DENIED;
+ }
+ int n;
+ switch (code) {
+ case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE
+ return NO_ERROR;
+ case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE
+ return NO_ERROR;
+ case 1002: // SHOW_UPDATES
+ n = data.readInt32();
+ mDebugRegion = n ? n : (mDebugRegion ? 0 : 1);
+ return NO_ERROR;
+ case 1003: // SHOW_BACKGROUND
+ n = data.readInt32();
+ mDebugBackground = n ? 1 : 0;
+ return NO_ERROR;
+ case 1004:{ // repaint everything
+ Mutex::Autolock _l(mStateLock);
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe
+ signalEvent();
+ return NO_ERROR;
+ }
+ case 1005:{ // force transaction
+ setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
+ return NO_ERROR;
+ }
+ case 1007: // set mFreezeCount
+ mFreezeCount = data.readInt32();
+ mFreezeDisplayTime = 0;
+ return NO_ERROR;
+ case 1010: // interrogate.
+ reply->writeInt32(0);
+ reply->writeInt32(0);
+ reply->writeInt32(mDebugRegion);
+ reply->writeInt32(mDebugBackground);
+ return NO_ERROR;
+ case 1013: {
+ Mutex::Autolock _l(mStateLock);
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ reply->writeInt32(hw.getPageFlipCount());
+ }
+ return NO_ERROR;
+ }
+ }
+ return err;
+}
+
+// ---------------------------------------------------------------------------
+
+sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const
+{
+ sp<Layer> result;
+ Mutex::Autolock _l(mStateLock);
+ result = mLayerMap.valueFor( sur->asBinder() ).promote();
+ return result;
+}
+
+// ---------------------------------------------------------------------------
+
+Client::Client(const sp<SurfaceFlinger>& flinger)
+ : mFlinger(flinger), mNameGenerator(1)
+{
+}
+
+Client::~Client()
+{
+ const size_t count = mLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ sp<LayerBaseClient> layer(mLayers.valueAt(i).promote());
+ if (layer != 0) {
+ mFlinger->removeLayer(layer);
+ }
+ }
+}
+
+status_t Client::initCheck() const {
+ return NO_ERROR;
+}
+
+ssize_t Client::attachLayer(const sp<LayerBaseClient>& layer)
+{
+ int32_t name = android_atomic_inc(&mNameGenerator);
+ mLayers.add(name, layer);
+ return name;
+}
+
+void Client::detachLayer(const LayerBaseClient* layer)
+{
+ // we do a linear search here, because this doesn't happen often
+ const size_t count = mLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ if (mLayers.valueAt(i) == layer) {
+ mLayers.removeItemsAt(i, 1);
+ break;
+ }
+ }
+}
+sp<LayerBaseClient> Client::getLayerUser(int32_t i) const {
+ sp<LayerBaseClient> lbc;
+ const wp<LayerBaseClient>& layer(mLayers.valueFor(i));
+ if (layer != 0) {
+ lbc = layer.promote();
+ LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i));
+ }
+ return lbc;
+}
+
+sp<IMemoryHeap> Client::getControlBlock() const {
+ return 0;
+}
+ssize_t Client::getTokenForSurface(const sp<ISurface>& sur) const {
+ return -1;
+}
+sp<ISurface> Client::createSurface(
+ ISurfaceComposerClient::surface_data_t* params, int pid,
+ const String8& name,
+ DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
+ uint32_t flags)
+{
+ return mFlinger->createSurface(this, pid, name, params,
+ display, w, h, format, flags);
+}
+status_t Client::destroySurface(SurfaceID sid) {
+ return mFlinger->removeSurface(this, sid);
+}
+status_t Client::setState(int32_t count, const layer_state_t* states) {
+ return mFlinger->setClientState(this, count, states);
+}
+
+// ---------------------------------------------------------------------------
+
+UserClient::UserClient(const sp<SurfaceFlinger>& flinger)
+ : ctrlblk(0), mBitmap(0), mFlinger(flinger)
+{
+ const int pgsize = getpagesize();
+ const int cblksize = ((sizeof(SharedClient)+(pgsize-1))&~(pgsize-1));
+
+ mCblkHeap = new MemoryHeapBase(cblksize, 0,
+ "SurfaceFlinger Client control-block");
+
+ ctrlblk = static_cast<SharedClient *>(mCblkHeap->getBase());
+ if (ctrlblk) { // construct the shared structure in-place.
+ new(ctrlblk) SharedClient;
+ }
+}
+
+UserClient::~UserClient()
+{
+ if (ctrlblk) {
+ ctrlblk->~SharedClient(); // destroy our shared-structure.
+ }
+
+ /*
+ * When a UserClient dies, it's unclear what to do exactly.
+ * We could go ahead and destroy all surfaces linked to that client
+ * however, it wouldn't be fair to the main Client
+ * (usually the the window-manager), which might want to re-target
+ * the layer to another UserClient.
+ * I think the best is to do nothing, or not much; in most cases the
+ * WM itself will go ahead and clean things up when it detects a client of
+ * his has died.
+ * The remaining question is what to display? currently we keep
+ * just keep the current buffer.
+ */
+}
+
+status_t UserClient::initCheck() const {
+ return ctrlblk == 0 ? NO_INIT : NO_ERROR;
+}
+
+void UserClient::detachLayer(const Layer* layer)
+{
+ int32_t name = layer->getToken();
+ if (name >= 0) {
+ int32_t mask = 1LU<<name;
+ if ((android_atomic_and(~mask, &mBitmap) & mask) == 0) {
+ LOGW("token %d wasn't marked as used %08x", name, int(mBitmap));
+ }
+ }
+}
+
+sp<IMemoryHeap> UserClient::getControlBlock() const {
+ return mCblkHeap;
+}
+
+ssize_t UserClient::getTokenForSurface(const sp<ISurface>& sur) const
+{
+ int32_t name = NAME_NOT_FOUND;
+ sp<Layer> layer(mFlinger->getLayer(sur));
+ if (layer == 0) return name;
+
+ // if this layer already has a token, just return it
+ name = layer->getToken();
+ if ((name >= 0) && (layer->getClient() == this))
+ return name;
+
+ name = 0;
+ do {
+ int32_t mask = 1LU<<name;
+ if ((android_atomic_or(mask, &mBitmap) & mask) == 0) {
+ // we found and locked that name
+ status_t err = layer->setToken(
+ const_cast<UserClient*>(this), ctrlblk, name);
+ if (err != NO_ERROR) {
+ // free the name
+ android_atomic_and(~mask, &mBitmap);
+ name = err;
+ }
+ break;
+ }
+ if (++name > 31)
+ name = NO_MEMORY;
+ } while(name >= 0);
+
+ //LOGD("getTokenForSurface(%p) => %d (client=%p, bitmap=%08lx)",
+ // sur->asBinder().get(), name, this, mBitmap);
+ return name;
+}
+
+sp<ISurface> UserClient::createSurface(
+ ISurfaceComposerClient::surface_data_t* params, int pid,
+ const String8& name,
+ DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
+ uint32_t flags) {
+ return 0;
+}
+status_t UserClient::destroySurface(SurfaceID sid) {
+ return INVALID_OPERATION;
+}
+status_t UserClient::setState(int32_t count, const layer_state_t* states) {
+ return INVALID_OPERATION;
+}
+
+// ---------------------------------------------------------------------------
+
+GraphicPlane::GraphicPlane()
+ : mHw(0)
+{
+}
+
+GraphicPlane::~GraphicPlane() {
+ delete mHw;
+}
+
+bool GraphicPlane::initialized() const {
+ return mHw ? true : false;
+}
+
+int GraphicPlane::getWidth() const {
+ return mWidth;
+}
+
+int GraphicPlane::getHeight() const {
+ return mHeight;
+}
+
+void GraphicPlane::setDisplayHardware(DisplayHardware *hw)
+{
+ mHw = hw;
+
+ // initialize the display orientation transform.
+ // it's a constant that should come from the display driver.
+ int displayOrientation = ISurfaceComposer::eOrientationDefault;
+ char property[PROPERTY_VALUE_MAX];
+ if (property_get("ro.sf.hwrotation", property, NULL) > 0) {
+ //displayOrientation
+ switch (atoi(property)) {
+ case 90:
+ displayOrientation = ISurfaceComposer::eOrientation90;
+ break;
+ case 270:
+ displayOrientation = ISurfaceComposer::eOrientation270;
+ break;
+ }
+ }
+
+ const float w = hw->getWidth();
+ const float h = hw->getHeight();
+ GraphicPlane::orientationToTransfrom(displayOrientation, w, h,
+ &mDisplayTransform);
+ if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) {
+ mDisplayWidth = h;
+ mDisplayHeight = w;
+ } else {
+ mDisplayWidth = w;
+ mDisplayHeight = h;
+ }
+
+ setOrientation(ISurfaceComposer::eOrientationDefault);
+}
+
+status_t GraphicPlane::orientationToTransfrom(
+ int orientation, int w, int h, Transform* tr)
+{
+ uint32_t flags = 0;
+ switch (orientation) {
+ case ISurfaceComposer::eOrientationDefault:
+ flags = Transform::ROT_0;
+ break;
+ case ISurfaceComposer::eOrientation90:
+ flags = Transform::ROT_90;
+ break;
+ case ISurfaceComposer::eOrientation180:
+ flags = Transform::ROT_180;
+ break;
+ case ISurfaceComposer::eOrientation270:
+ flags = Transform::ROT_270;
+ break;
+ default:
+ return BAD_VALUE;
+ }
+ tr->set(flags, w, h);
+ return NO_ERROR;
+}
+
+status_t GraphicPlane::setOrientation(int orientation)
+{
+ // If the rotation can be handled in hardware, this is where
+ // the magic should happen.
+
+ const DisplayHardware& hw(displayHardware());
+ const float w = mDisplayWidth;
+ const float h = mDisplayHeight;
+ mWidth = int(w);
+ mHeight = int(h);
+
+ Transform orientationTransform;
+ GraphicPlane::orientationToTransfrom(orientation, w, h,
+ &orientationTransform);
+ if (orientation & ISurfaceComposer::eOrientationSwapMask) {
+ mWidth = int(h);
+ mHeight = int(w);
+ }
+
+ mOrientation = orientation;
+ mGlobalTransform = mDisplayTransform * orientationTransform;
+ return NO_ERROR;
+}
+
+const DisplayHardware& GraphicPlane::displayHardware() const {
+ return *mHw;
+}
+
+const Transform& GraphicPlane::transform() const {
+ return mGlobalTransform;
+}
+
+EGLDisplay GraphicPlane::getEGLDisplay() const {
+ return mHw->getEGLDisplay();
+}
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android
generated by cgit v1.1 at 2025-01-25 00:40:59 +0000