/* * 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. */ #define ATRACE_TAG ATRACE_TAG_GRAPHICS #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "clz.h" #include "DdmConnection.h" #include "DisplayDevice.h" #include "Client.h" #include "EventThread.h" #include "GLExtensions.h" #include "Layer.h" #include "LayerDim.h" #include "SurfaceFlinger.h" #include "DisplayHardware/FramebufferSurface.h" #include "DisplayHardware/HWComposer.h" #include "DisplayHardware/VirtualDisplaySurface.h" #define DISPLAY_COUNT 1 EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name); namespace android { // --------------------------------------------------------------------------- const String16 sHardwareTest("android.permission.HARDWARE_TEST"); const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); const String16 sDump("android.permission.DUMP"); // --------------------------------------------------------------------------- SurfaceFlinger::SurfaceFlinger() : BnSurfaceComposer(), Thread(false), mTransactionFlags(0), mTransactionPending(false), mAnimTransactionPending(false), mLayersRemoved(false), mRepaintEverything(0), mBootTime(systemTime()), mVisibleRegionsDirty(false), mHwWorkListDirty(false), mAnimCompositionPending(false), mDebugRegion(0), mDebugDDMS(0), mDebugDisableHWC(0), mDebugDisableTransformHint(0), mDebugInSwapBuffers(0), mLastSwapBufferTime(0), mDebugInTransaction(0), mLastTransactionTime(0), mBootFinished(false) { ALOGI("SurfaceFlinger is starting"); // debugging stuff... char value[PROPERTY_VALUE_MAX]; property_get("ro.bq.gpu_to_cpu_unsupported", value, "0"); mGpuToCpuSupported = !atoi(value); property_get("debug.sf.showupdates", value, "0"); mDebugRegion = atoi(value); property_get("debug.sf.ddms", value, "0"); mDebugDDMS = atoi(value); if (mDebugDDMS) { if (!startDdmConnection()) { // start failed, and DDMS debugging not enabled mDebugDDMS = 0; } } ALOGI_IF(mDebugRegion, "showupdates enabled"); ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); } void SurfaceFlinger::onFirstRef() { mEventQueue.init(this); run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); // Wait for the main thread to be done with its initialization mReadyToRunBarrier.wait(); } SurfaceFlinger::~SurfaceFlinger() { EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); eglTerminate(display); } void SurfaceFlinger::binderDied(const wp& who) { // the window manager died on us. prepare its eulogy. // restore initial conditions (default device unblank, etc) initializeDisplays(); // restart the boot-animation startBootAnim(); } sp SurfaceFlinger::createConnection() { sp bclient; sp client(new Client(this)); status_t err = client->initCheck(); if (err == NO_ERROR) { bclient = client; } return bclient; } sp SurfaceFlinger::createDisplay(const String8& displayName, bool secure) { class DisplayToken : public BBinder { sp flinger; virtual ~DisplayToken() { // no more references, this display must be terminated Mutex::Autolock _l(flinger->mStateLock); flinger->mCurrentState.displays.removeItem(this); flinger->setTransactionFlags(eDisplayTransactionNeeded); } public: DisplayToken(const sp& flinger) : flinger(flinger) { } }; sp token = new DisplayToken(this); Mutex::Autolock _l(mStateLock); DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); info.displayName = displayName; info.isSecure = secure; mCurrentState.displays.add(token, info); return token; } void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { ALOGW_IF(mBuiltinDisplays[type], "Overwriting display token for display type %d", type); mBuiltinDisplays[type] = new BBinder(); DisplayDeviceState info(type); // All non-virtual displays are currently considered secure. info.isSecure = true; mCurrentState.displays.add(mBuiltinDisplays[type], info); } sp SurfaceFlinger::getBuiltInDisplay(int32_t id) { if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); return NULL; } return mBuiltinDisplays[id]; } sp SurfaceFlinger::createGraphicBufferAlloc() { sp gba(new GraphicBufferAlloc()); return gba; } void SurfaceFlinger::bootFinished() { const nsecs_t now = systemTime(); const nsecs_t duration = now - mBootTime; ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); mBootFinished = true; // wait patiently for the window manager death const String16 name("window"); sp window(defaultServiceManager()->getService(name)); if (window != 0) { window->linkToDeath(static_cast(this)); } // stop boot animation // formerly we would just kill the process, but we now ask it to exit so it // can choose where to stop the animation. property_set("service.bootanim.exit", "1"); } void SurfaceFlinger::deleteTextureAsync(GLuint texture) { class MessageDestroyGLTexture : public MessageBase { GLuint texture; public: MessageDestroyGLTexture(GLuint texture) : texture(texture) { } virtual bool handler() { glDeleteTextures(1, &texture); return true; } }; postMessageAsync(new MessageDestroyGLTexture(texture)); } status_t SurfaceFlinger::selectConfigForAttribute( EGLDisplay dpy, EGLint const* attrs, EGLint attribute, EGLint wanted, EGLConfig* outConfig) { EGLConfig config = NULL; EGLint numConfigs = -1, n=0; eglGetConfigs(dpy, NULL, 0, &numConfigs); EGLConfig* const configs = new EGLConfig[numConfigs]; eglChooseConfig(dpy, attrs, configs, numConfigs, &n); if (n) { if (attribute != EGL_NONE) { for (int i=0 ; i mList; struct Attribute { Attribute() {}; Attribute(EGLint v) : v(v) { } EGLint v; bool operator < (const Attribute& other) const { // this places EGL_NONE at the end EGLint lhs(v); EGLint rhs(other.v); if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; return lhs < rhs; } }; class Adder { friend class EGLAttributeVector; EGLAttributeVector& v; EGLint attribute; Adder(EGLAttributeVector& v, EGLint attribute) : v(v), attribute(attribute) { } public: void operator = (EGLint value) { if (attribute != EGL_NONE) { v.mList.add(attribute, value); } } operator EGLint () const { return v.mList[attribute]; } }; public: EGLAttributeVector() { mList.add(EGL_NONE, EGL_NONE); } void remove(EGLint attribute) { if (attribute != EGL_NONE) { mList.removeItem(attribute); } } Adder operator [] (EGLint attribute) { return Adder(*this, attribute); } EGLint operator [] (EGLint attribute) const { return mList[attribute]; } // cast-operator to (EGLint const*) operator EGLint const* () const { return &mList.keyAt(0).v; } }; EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if // it is to be used with WIFI displays EGLConfig config; EGLint dummy; status_t err; EGLAttributeVector attribs; attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; attribs[EGL_RED_SIZE] = 8; attribs[EGL_GREEN_SIZE] = 8; attribs[EGL_BLUE_SIZE] = 8; err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); if (!err) goto success; // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); err = selectConfigForAttribute(display, attribs, EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); if (!err) goto success; // maybe we failed because of EGL_RECORDABLE_ANDROID ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); attribs.remove(EGL_RECORDABLE_ANDROID); err = selectConfigForAttribute(display, attribs, EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); if (!err) goto success; // allow less than 24-bit color; the non-gpu-accelerated emulator only // supports 16-bit color ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); attribs.remove(EGL_RED_SIZE); attribs.remove(EGL_GREEN_SIZE); attribs.remove(EGL_BLUE_SIZE); err = selectConfigForAttribute(display, attribs, EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); if (!err) goto success; // this EGL is too lame for Android ALOGE("no suitable EGLConfig found, giving up"); return 0; success: if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); return config; } EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { // Also create our EGLContext EGLint contextAttributes[] = { #ifdef EGL_IMG_context_priority #ifdef HAS_CONTEXT_PRIORITY #warning "using EGL_IMG_context_priority" EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, #endif #endif EGL_NONE, EGL_NONE }; EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); return ctxt; } void SurfaceFlinger::initializeGL(EGLDisplay display) { GLExtensions& extensions(GLExtensions::getInstance()); extensions.initWithGLStrings( glGetString(GL_VENDOR), glGetString(GL_RENDERER), glGetString(GL_VERSION), glGetString(GL_EXTENSIONS), eglQueryString(display, EGL_VENDOR), eglQueryString(display, EGL_VERSION), eglQueryString(display, EGL_EXTENSIONS)); glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); glPixelStorei(GL_UNPACK_ALIGNMENT, 4); glPixelStorei(GL_PACK_ALIGNMENT, 4); glEnableClientState(GL_VERTEX_ARRAY); glShadeModel(GL_FLAT); glDisable(GL_DITHER); glDisable(GL_CULL_FACE); struct pack565 { inline uint16_t operator() (int r, int g, int b) const { return (r<<11)|(g<<5)|b; } } pack565; const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; glGenTextures(1, &mProtectedTexName); glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 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, 1, 1, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); // print some debugging info EGLint r,g,b,a; eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); ALOGI("EGL informations:"); ALOGI("vendor : %s", extensions.getEglVendor()); ALOGI("version : %s", extensions.getEglVersion()); ALOGI("extensions: %s", extensions.getEglExtension()); ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); ALOGI("OpenGL ES informations:"); ALOGI("vendor : %s", extensions.getVendor()); ALOGI("renderer : %s", extensions.getRenderer()); ALOGI("version : %s", extensions.getVersion()); ALOGI("extensions: %s", extensions.getExtension()); ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); } status_t SurfaceFlinger::readyToRun() { ALOGI( "SurfaceFlinger's main thread ready to run. " "Initializing graphics H/W..."); Mutex::Autolock _l(mStateLock); // initialize EGL for the default display mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); eglInitialize(mEGLDisplay, NULL, NULL); // Initialize the H/W composer object. There may or may not be an // actual hardware composer underneath. mHwc = new HWComposer(this, *static_cast(this)); // initialize the config and context EGLint format = mHwc->getVisualID(); mEGLConfig = selectEGLConfig(mEGLDisplay, format); mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); // figure out which format we got eglGetConfigAttrib(mEGLDisplay, mEGLConfig, EGL_NATIVE_VISUAL_ID, &mEGLNativeVisualId); LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, "couldn't create EGLContext"); // initialize our non-virtual displays for (size_t i=0 ; iisConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { // All non-virtual displays are currently considered secure. bool isSecure = true; createBuiltinDisplayLocked(type); wp token = mBuiltinDisplays[i]; sp hw = new DisplayDevice(this, type, allocateHwcDisplayId(type), isSecure, token, new FramebufferSurface(*mHwc, i), mEGLConfig); if (i > DisplayDevice::DISPLAY_PRIMARY) { // FIXME: currently we don't get blank/unblank requests // for displays other than the main display, so we always // assume a connected display is unblanked. ALOGD("marking display %d as acquired/unblanked", i); hw->acquireScreen(); } mDisplays.add(token, hw); } } // we need a GL context current in a few places, when initializing // OpenGL ES (see below), or creating a layer, // or when a texture is (asynchronously) destroyed, and for that // we need a valid surface, so it's convenient to use the main display // for that. sp hw(getDefaultDisplayDevice()); // initialize OpenGL ES DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); initializeGL(mEGLDisplay); // start the EventThread mEventThread = new EventThread(this); mEventQueue.setEventThread(mEventThread); // initialize our drawing state mDrawingState = mCurrentState; // We're now ready to accept clients... mReadyToRunBarrier.open(); // set initial conditions (e.g. unblank default device) initializeDisplays(); // start boot animation startBootAnim(); return NO_ERROR; } int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? type : mHwc->allocateDisplayId(); } void SurfaceFlinger::startBootAnim() { // start boot animation property_set("service.bootanim.exit", "0"); property_set("ctl.start", "bootanim"); } uint32_t SurfaceFlinger::getMaxTextureSize() const { return mMaxTextureSize; } uint32_t SurfaceFlinger::getMaxViewportDims() const { return mMaxViewportDims[0] < mMaxViewportDims[1] ? mMaxViewportDims[0] : mMaxViewportDims[1]; } // ---------------------------------------------------------------------------- bool SurfaceFlinger::authenticateSurfaceTexture( const sp& bufferProducer) const { Mutex::Autolock _l(mStateLock); sp surfaceTextureBinder(bufferProducer->asBinder()); return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0; } status_t SurfaceFlinger::getDisplayInfo(const sp& display, DisplayInfo* info) { int32_t type = NAME_NOT_FOUND; for (int i=0 ; i 0) { density = atoi(property); } return density; } public: static int getEmuDensity() { return getDensityFromProperty("qemu.sf.lcd_density"); } static int getBuildDensity() { return getDensityFromProperty("ro.sf.lcd_density"); } }; if (type == DisplayDevice::DISPLAY_PRIMARY) { // The density of the device is provided by a build property float density = Density::getBuildDensity() / 160.0f; if (density == 0) { // the build doesn't provide a density -- this is wrong! // use xdpi instead ALOGE("ro.sf.lcd_density must be defined as a build property"); density = xdpi / 160.0f; } if (Density::getEmuDensity()) { // if "qemu.sf.lcd_density" is specified, it overrides everything xdpi = ydpi = density = Density::getEmuDensity(); density /= 160.0f; } info->density = density; // TODO: this needs to go away (currently needed only by webkit) sp hw(getDefaultDisplayDevice()); info->orientation = hw->getOrientation(); getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); } else { // TODO: where should this value come from? static const int TV_DENSITY = 213; info->density = TV_DENSITY / 160.0f; info->orientation = 0; } info->w = hwc.getWidth(type); info->h = hwc.getHeight(type); info->xdpi = xdpi; info->ydpi = ydpi; info->fps = float(1e9 / hwc.getRefreshPeriod(type)); // All non-virtual displays are currently considered secure. info->secure = true; return NO_ERROR; } // ---------------------------------------------------------------------------- sp SurfaceFlinger::createDisplayEventConnection() { return mEventThread->createEventConnection(); } // ---------------------------------------------------------------------------- void SurfaceFlinger::waitForEvent() { mEventQueue.waitMessage(); } void SurfaceFlinger::signalTransaction() { mEventQueue.invalidate(); } void SurfaceFlinger::signalLayerUpdate() { mEventQueue.invalidate(); } void SurfaceFlinger::signalRefresh() { mEventQueue.refresh(); } status_t SurfaceFlinger::postMessageAsync(const sp& msg, nsecs_t reltime, uint32_t flags) { return mEventQueue.postMessage(msg, reltime); } status_t SurfaceFlinger::postMessageSync(const sp& msg, nsecs_t reltime, uint32_t flags) { status_t res = mEventQueue.postMessage(msg, reltime); if (res == NO_ERROR) { msg->wait(); } return res; } bool SurfaceFlinger::threadLoop() { waitForEvent(); return true; } void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { if (mEventThread == NULL) { // This is a temporary workaround for b/7145521. A non-null pointer // does not mean EventThread has finished initializing, so this // is not a correct fix. ALOGW("WARNING: EventThread not started, ignoring vsync"); return; } if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { // we should only receive DisplayDevice::DisplayType from the vsync callback mEventThread->onVSyncReceived(type, timestamp); } } void SurfaceFlinger::onHotplugReceived(int type, bool connected) { if (mEventThread == NULL) { // This is a temporary workaround for b/7145521. A non-null pointer // does not mean EventThread has finished initializing, so this // is not a correct fix. ALOGW("WARNING: EventThread not started, ignoring hotplug"); return; } if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { Mutex::Autolock _l(mStateLock); if (connected) { createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); } else { mCurrentState.displays.removeItem(mBuiltinDisplays[type]); mBuiltinDisplays[type].clear(); } setTransactionFlags(eDisplayTransactionNeeded); // Defer EventThread notification until SF has updated mDisplays. } } void SurfaceFlinger::eventControl(int disp, int event, int enabled) { getHwComposer().eventControl(disp, event, enabled); } void SurfaceFlinger::onMessageReceived(int32_t what) { ATRACE_CALL(); switch (what) { case MessageQueue::TRANSACTION: handleMessageTransaction(); break; case MessageQueue::INVALIDATE: handleMessageTransaction(); handleMessageInvalidate(); signalRefresh(); break; case MessageQueue::REFRESH: handleMessageRefresh(); break; } } void SurfaceFlinger::handleMessageTransaction() { uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); if (transactionFlags) { handleTransaction(transactionFlags); } } void SurfaceFlinger::handleMessageInvalidate() { ATRACE_CALL(); handlePageFlip(); } void SurfaceFlinger::handleMessageRefresh() { ATRACE_CALL(); preComposition(); rebuildLayerStacks(); setUpHWComposer(); doDebugFlashRegions(); doComposition(); postComposition(); } void SurfaceFlinger::doDebugFlashRegions() { // is debugging enabled if (CC_LIKELY(!mDebugRegion)) return; const bool repaintEverything = mRepaintEverything; for (size_t dpy=0 ; dpy& hw(mDisplays[dpy]); if (hw->canDraw()) { // transform the dirty region into this screen's coordinate space const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); if (!dirtyRegion.isEmpty()) { // redraw the whole screen doComposeSurfaces(hw, Region(hw->bounds())); // and draw the dirty region glDisable(GL_TEXTURE_EXTERNAL_OES); glDisable(GL_TEXTURE_2D); glDisable(GL_BLEND); glColor4f(1, 0, 1, 1); const int32_t height = hw->getHeight(); Region::const_iterator it = dirtyRegion.begin(); Region::const_iterator const end = dirtyRegion.end(); while (it != end) { const Rect& r = *it++; GLfloat vertices[][2] = { { (GLfloat) r.left, (GLfloat) (height - r.top) }, { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, { (GLfloat) r.right, (GLfloat) (height - r.top) } }; glVertexPointer(2, GL_FLOAT, 0, vertices); glDrawArrays(GL_TRIANGLE_FAN, 0, 4); } hw->compositionComplete(); hw->swapBuffers(getHwComposer()); } } } postFramebuffer(); if (mDebugRegion > 1) { usleep(mDebugRegion * 1000); } HWComposer& hwc(getHwComposer()); if (hwc.initCheck() == NO_ERROR) { status_t err = hwc.prepare(); ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); } } void SurfaceFlinger::preComposition() { bool needExtraInvalidate = false; const LayerVector& currentLayers(mDrawingState.layersSortedByZ); const size_t count = currentLayers.size(); for (size_t i=0 ; ionPreComposition()) { needExtraInvalidate = true; } } if (needExtraInvalidate) { signalLayerUpdate(); } } void SurfaceFlinger::postComposition() { const LayerVector& currentLayers(mDrawingState.layersSortedByZ); const size_t count = currentLayers.size(); for (size_t i=0 ; ionPostComposition(); } if (mAnimCompositionPending) { mAnimCompositionPending = false; const HWComposer& hwc = getHwComposer(); sp presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); if (presentFence->isValid()) { mAnimFrameTracker.setActualPresentFence(presentFence); } else { // The HWC doesn't support present fences, so use the refresh // timestamp instead. nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); mAnimFrameTracker.setActualPresentTime(presentTime); } mAnimFrameTracker.advanceFrame(); } } void SurfaceFlinger::rebuildLayerStacks() { // rebuild the visible layer list per screen if (CC_UNLIKELY(mVisibleRegionsDirty)) { ATRACE_CALL(); mVisibleRegionsDirty = false; invalidateHwcGeometry(); const LayerVector& currentLayers(mDrawingState.layersSortedByZ); for (size_t dpy=0 ; dpy > layersSortedByZ; const sp& hw(mDisplays[dpy]); const Transform& tr(hw->getTransform()); const Rect bounds(hw->getBounds()); if (hw->canDraw()) { SurfaceFlinger::computeVisibleRegions(currentLayers, hw->getLayerStack(), dirtyRegion, opaqueRegion); const size_t count = currentLayers.size(); for (size_t i=0 ; i& layer(currentLayers[i]); const Layer::State& s(layer->drawingState()); if (s.layerStack == hw->getLayerStack()) { Region drawRegion(tr.transform( layer->visibleNonTransparentRegion)); drawRegion.andSelf(bounds); if (!drawRegion.isEmpty()) { layersSortedByZ.add(layer); } } } } hw->setVisibleLayersSortedByZ(layersSortedByZ); hw->undefinedRegion.set(bounds); hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); hw->dirtyRegion.orSelf(dirtyRegion); } } } void SurfaceFlinger::setUpHWComposer() { HWComposer& hwc(getHwComposer()); if (hwc.initCheck() == NO_ERROR) { // build the h/w work list if (CC_UNLIKELY(mHwWorkListDirty)) { mHwWorkListDirty = false; for (size_t dpy=0 ; dpy hw(mDisplays[dpy]); const int32_t id = hw->getHwcDisplayId(); if (id >= 0) { const Vector< sp >& currentLayers( hw->getVisibleLayersSortedByZ()); const size_t count = currentLayers.size(); if (hwc.createWorkList(id, count) == NO_ERROR) { HWComposer::LayerListIterator cur = hwc.begin(id); const HWComposer::LayerListIterator end = hwc.end(id); for (size_t i=0 ; cur!=end && i& layer(currentLayers[i]); layer->setGeometry(hw, *cur); if (mDebugDisableHWC || mDebugRegion) { cur->setSkip(true); } } } } } } // set the per-frame data for (size_t dpy=0 ; dpy hw(mDisplays[dpy]); const int32_t id = hw->getHwcDisplayId(); if (id >= 0) { const Vector< sp >& currentLayers( hw->getVisibleLayersSortedByZ()); const size_t count = currentLayers.size(); HWComposer::LayerListIterator cur = hwc.begin(id); const HWComposer::LayerListIterator end = hwc.end(id); for (size_t i=0 ; cur!=end && i& layer(currentLayers[i]); layer->setPerFrameData(hw, *cur); } } } status_t err = hwc.prepare(); ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); } } void SurfaceFlinger::doComposition() { ATRACE_CALL(); const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); for (size_t dpy=0 ; dpy& hw(mDisplays[dpy]); if (hw->canDraw()) { // transform the dirty region into this screen's coordinate space const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); // repaint the framebuffer (if needed) doDisplayComposition(hw, dirtyRegion); hw->dirtyRegion.clear(); hw->flip(hw->swapRegion); hw->swapRegion.clear(); } // inform the h/w that we're done compositing hw->compositionComplete(); } postFramebuffer(); } void SurfaceFlinger::postFramebuffer() { ATRACE_CALL(); const nsecs_t now = systemTime(); mDebugInSwapBuffers = now; HWComposer& hwc(getHwComposer()); if (hwc.initCheck() == NO_ERROR) { if (!hwc.supportsFramebufferTarget()) { // EGL spec says: // "surface must be bound to the calling thread's current context, // for the current rendering API." DisplayDevice::makeCurrent(mEGLDisplay, getDefaultDisplayDevice(), mEGLContext); } hwc.commit(); } for (size_t dpy=0 ; dpy hw(mDisplays[dpy]); const Vector< sp >& currentLayers(hw->getVisibleLayersSortedByZ()); hw->onSwapBuffersCompleted(hwc); const size_t count = currentLayers.size(); int32_t id = hw->getHwcDisplayId(); if (id >=0 && hwc.initCheck() == NO_ERROR) { HWComposer::LayerListIterator cur = hwc.begin(id); const HWComposer::LayerListIterator end = hwc.end(id); for (size_t i = 0; cur != end && i < count; ++i, ++cur) { currentLayers[i]->onLayerDisplayed(hw, &*cur); } } else { for (size_t i = 0; i < count; i++) { currentLayers[i]->onLayerDisplayed(hw, NULL); } } } mLastSwapBufferTime = systemTime() - now; mDebugInSwapBuffers = 0; } void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) { ATRACE_CALL(); Mutex::Autolock _l(mStateLock); const nsecs_t now = systemTime(); mDebugInTransaction = now; // Here we're guaranteed that some transaction flags are set // so we can call handleTransactionLocked() unconditionally. // We call getTransactionFlags(), which will also clear the flags, // with mStateLock held to guarantee that mCurrentState won't change // until the transaction is committed. transactionFlags = getTransactionFlags(eTransactionMask); handleTransactionLocked(transactionFlags); mLastTransactionTime = systemTime() - now; mDebugInTransaction = 0; invalidateHwcGeometry(); // here the transaction has been committed } void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) { const LayerVector& currentLayers(mCurrentState.layersSortedByZ); const size_t count = currentLayers.size(); /* * Traversal of the children * (perform the transaction for each of them if needed) */ if (transactionFlags & eTraversalNeeded) { for (size_t i=0 ; i& 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 display own transactions if needed */ if (transactionFlags & eDisplayTransactionNeeded) { // here we take advantage of Vector's copy-on-write semantics to // improve performance by skipping the transaction entirely when // know that the lists are identical const KeyedVector< wp, DisplayDeviceState>& curr(mCurrentState.displays); const KeyedVector< wp, DisplayDeviceState>& draw(mDrawingState.displays); if (!curr.isIdenticalTo(draw)) { mVisibleRegionsDirty = true; const size_t cc = curr.size(); size_t dc = draw.size(); // find the displays that were removed // (ie: in drawing state but not in current state) // also handle displays that changed // (ie: displays that are in both lists) for (size_t i=0 ; i defaultDisplay(getDefaultDisplayDevice()); DisplayDevice::makeCurrent(mEGLDisplay, defaultDisplay, mEGLContext); sp hw(getDisplayDevice(draw.keyAt(i))); if (hw != NULL) hw->disconnect(getHwComposer()); if (draw[i].type < DisplayDevice::NUM_DISPLAY_TYPES) mEventThread->onHotplugReceived(draw[i].type, false); mDisplays.removeItem(draw.keyAt(i)); } else { ALOGW("trying to remove the main display"); } } else { // this display is in both lists. see if something changed. const DisplayDeviceState& state(curr[j]); const wp& display(curr.keyAt(j)); if (state.surface->asBinder() != draw[i].surface->asBinder()) { // changing the surface is like destroying and // recreating the DisplayDevice, so we just remove it // from the drawing state, so that it get re-added // below. sp hw(getDisplayDevice(display)); if (hw != NULL) hw->disconnect(getHwComposer()); mDisplays.removeItem(display); mDrawingState.displays.removeItemsAt(i); dc--; i--; // at this point we must loop to the next item continue; } const sp disp(getDisplayDevice(display)); if (disp != NULL) { if (state.layerStack != draw[i].layerStack) { disp->setLayerStack(state.layerStack); } if ((state.orientation != draw[i].orientation) || (state.viewport != draw[i].viewport) || (state.frame != draw[i].frame)) { disp->setProjection(state.orientation, state.viewport, state.frame); } } } } // find displays that were added // (ie: in current state but not in drawing state) for (size_t i=0 ; i dispSurface; int32_t hwcDisplayId = -1; if (state.isVirtualDisplay()) { // Virtual displays without a surface are dormant: // they have external state (layer stack, projection, // etc.) but no internal state (i.e. a DisplayDevice). if (state.surface != NULL) { hwcDisplayId = allocateHwcDisplayId(state.type); dispSurface = new VirtualDisplaySurface( *mHwc, hwcDisplayId, state.surface, state.displayName); } } else { ALOGE_IF(state.surface!=NULL, "adding a supported display, but rendering " "surface is provided (%p), ignoring it", state.surface.get()); hwcDisplayId = allocateHwcDisplayId(state.type); // for supported (by hwc) displays we provide our // own rendering surface dispSurface = new FramebufferSurface(*mHwc, state.type); } const wp& display(curr.keyAt(i)); if (dispSurface != NULL) { sp hw = new DisplayDevice(this, state.type, hwcDisplayId, state.isSecure, display, dispSurface, mEGLConfig); hw->setLayerStack(state.layerStack); hw->setProjection(state.orientation, state.viewport, state.frame); hw->setDisplayName(state.displayName); mDisplays.add(display, hw); if (state.isVirtualDisplay()) { if (hwcDisplayId >= 0) { mHwc->setVirtualDisplayProperties(hwcDisplayId, hw->getWidth(), hw->getHeight(), hw->getFormat()); } } else { mEventThread->onHotplugReceived(state.type, true); } } } } } } if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { // The transform hint might have changed for some layers // (either because a display has changed, or because a layer // as changed). // // Walk through all the layers in currentLayers, // and update their transform hint. // // If a layer is visible only on a single display, then that // display is used to calculate the hint, otherwise we use the // default display. // // NOTE: we do this here, rather than in rebuildLayerStacks() so that // the hint is set before we acquire a buffer from the surface texture. // // NOTE: layer transactions have taken place already, so we use their // drawing state. However, SurfaceFlinger's own transaction has not // happened yet, so we must use the current state layer list // (soon to become the drawing state list). // sp disp; uint32_t currentlayerStack = 0; for (size_t i=0; i& layer(currentLayers[i]); uint32_t layerStack = layer->drawingState().layerStack; if (i==0 || currentlayerStack != layerStack) { currentlayerStack = layerStack; // figure out if this layerstack is mirrored // (more than one display) if so, pick the default display, // if not, pick the only display it's on. disp.clear(); for (size_t dpy=0 ; dpy hw(mDisplays[dpy]); if (hw->getLayerStack() == currentlayerStack) { if (disp == NULL) { disp = hw; } else { disp = NULL; break; } } } } if (disp == NULL) { // NOTE: TEMPORARY FIX ONLY. Real fix should cause layers to // redraw after transform hint changes. See bug 8508397. // could be null when this layer is using a layerStack // that is not visible on any display. Also can occur at // screen off/on times. disp = getDefaultDisplayDevice(); } layer->updateTransformHint(disp); } } /* * Perform our own transaction if needed */ const LayerVector& previousLayers(mDrawingState.layersSortedByZ); if (currentLayers.size() > previousLayers.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 size_t count = previousLayers.size(); for (size_t i=0 ; i& layer(previousLayers[i]); if (currentLayers.indexOf(layer) < 0) { // this layer is not visible anymore // TODO: we could traverse the tree from front to back and // compute the actual visible region // TODO: we could cache the transformed region const Layer::State& s(layer->drawingState()); Region visibleReg = s.transform.transform( Region(Rect(s.active.w, s.active.h))); invalidateLayerStack(s.layerStack, visibleReg); } } } commitTransaction(); } void SurfaceFlinger::commitTransaction() { if (!mLayersPendingRemoval.isEmpty()) { // Notify removed layers now that they can't be drawn from for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { mLayersPendingRemoval[i]->onRemoved(); } mLayersPendingRemoval.clear(); } // If this transaction is part of a window animation then the next frame // we composite should be considered an animation as well. mAnimCompositionPending = mAnimTransactionPending; mDrawingState = mCurrentState; mTransactionPending = false; mAnimTransactionPending = false; mTransactionCV.broadcast(); } void SurfaceFlinger::computeVisibleRegions( const LayerVector& currentLayers, uint32_t layerStack, Region& outDirtyRegion, Region& outOpaqueRegion) { ATRACE_CALL(); Region aboveOpaqueLayers; Region aboveCoveredLayers; Region dirty; outDirtyRegion.clear(); size_t i = currentLayers.size(); while (i--) { const sp& layer = currentLayers[i]; // start with the whole surface at its current location const Layer::State& s(layer->drawingState()); // only consider the layers on the given layer stack if (s.layerStack != layerStack) continue; /* * 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; /* * transparentRegion: area of a surface that is hinted to be completely * transparent. This is only used to tell when the layer has no visible * non-transparent regions and can be removed from the layer list. It * does not affect the visibleRegion of this layer or any layers * beneath it. The hint may not be correct if apps don't respect the * SurfaceView restrictions (which, sadly, some don't). */ Region transparentRegion; // handle hidden surfaces by setting the visible region to empty if (CC_LIKELY(layer->isVisible())) { const bool translucent = !layer->isOpaque(); Rect bounds(s.transform.transform(layer->computeBounds())); visibleRegion.set(bounds); if (!visibleRegion.isEmpty()) { // Remove the transparent area from the visible region if (translucent) { const Transform tr(s.transform); if (tr.transformed()) { if (tr.preserveRects()) { // transform the transparent region transparentRegion = tr.transform(s.activeTransparentRegion); } else { // transformation too complex, can't do the // transparent region optimization. transparentRegion.clear(); } } else { transparentRegion = s.activeTransparentRegion; } } // compute the opaque region const int32_t layerOrientation = s.transform.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->visibleRegion); 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->visibleRegion; const Region oldCoveredRegion = layer->coveredRegion; const Region oldExposed = oldVisibleRegion - oldCoveredRegion; dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); } dirty.subtractSelf(aboveOpaqueLayers); // accumulate to the screen dirty region outDirtyRegion.orSelf(dirty); // Update aboveOpaqueLayers for next (lower) layer aboveOpaqueLayers.orSelf(opaqueRegion); // Store the visible region in screen space layer->setVisibleRegion(visibleRegion); layer->setCoveredRegion(coveredRegion); layer->setVisibleNonTransparentRegion( visibleRegion.subtract(transparentRegion)); } outOpaqueRegion = aboveOpaqueLayers; } void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, const Region& dirty) { for (size_t dpy=0 ; dpy& hw(mDisplays[dpy]); if (hw->getLayerStack() == layerStack) { hw->dirtyRegion.orSelf(dirty); } } } void SurfaceFlinger::handlePageFlip() { Region dirtyRegion; bool visibleRegions = false; const LayerVector& currentLayers(mDrawingState.layersSortedByZ); const size_t count = currentLayers.size(); for (size_t i=0 ; i& layer(currentLayers[i]); const Region dirty(layer->latchBuffer(visibleRegions)); const Layer::State& s(layer->drawingState()); invalidateLayerStack(s.layerStack, dirty); } mVisibleRegionsDirty |= visibleRegions; } void SurfaceFlinger::invalidateHwcGeometry() { mHwWorkListDirty = true; } void SurfaceFlinger::doDisplayComposition(const sp& hw, const Region& inDirtyRegion) { Region dirtyRegion(inDirtyRegion); // compute the invalid region hw->swapRegion.orSelf(dirtyRegion); uint32_t flags = hw->getFlags(); if (flags & DisplayDevice::SWAP_RECTANGLE) { // 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 dirtyRegion.set(hw->swapRegion.bounds()); } else { if (flags & DisplayDevice::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 DisplayDevice::flip()) dirtyRegion.set(hw->swapRegion.bounds()); } else { // we need to redraw everything (the whole screen) dirtyRegion.set(hw->bounds()); hw->swapRegion = dirtyRegion; } } doComposeSurfaces(hw, dirtyRegion); // update the swap region and clear the dirty region hw->swapRegion.orSelf(dirtyRegion); // swap buffers (presentation) hw->swapBuffers(getHwComposer()); } void SurfaceFlinger::doComposeSurfaces(const sp& hw, const Region& dirty) { const int32_t id = hw->getHwcDisplayId(); HWComposer& hwc(getHwComposer()); HWComposer::LayerListIterator cur = hwc.begin(id); const HWComposer::LayerListIterator end = hwc.end(id); const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); if (hasGlesComposition) { DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); // set the frame buffer glMatrixMode(GL_MODELVIEW); glLoadIdentity(); // Never touch the framebuffer if we don't have any framebuffer layers const bool hasHwcComposition = hwc.hasHwcComposition(id); if (hasHwcComposition) { // when using overlays, we assume a fully transparent framebuffer // NOTE: we could reduce how much we need to clear, for instance // remove where there are opaque FB layers. however, on some // GPUs doing a "clean slate" glClear might be more efficient. // We'll revisit later if needed. glClearColor(0, 0, 0, 0); glClear(GL_COLOR_BUFFER_BIT); } else { // we start with the whole screen area const Region bounds(hw->getBounds()); // we remove the scissor part // we're left with the letterbox region // (common case is that letterbox ends-up being empty) const Region letterbox(bounds.subtract(hw->getScissor())); // compute the area to clear Region region(hw->undefinedRegion.merge(letterbox)); // but limit it to the dirty region region.andSelf(dirty); // screen is already cleared here if (!region.isEmpty()) { // can happen with SurfaceView drawWormhole(hw, region); } } if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { // just to be on the safe side, we don't set the // scissor on the main display. It should never be needed // anyways (though in theory it could since the API allows it). const Rect& bounds(hw->getBounds()); const Rect& scissor(hw->getScissor()); if (scissor != bounds) { // scissor doesn't match the screen's dimensions, so we // need to clear everything outside of it and enable // the GL scissor so we don't draw anything where we shouldn't const GLint height = hw->getHeight(); glScissor(scissor.left, height - scissor.bottom, scissor.getWidth(), scissor.getHeight()); // enable scissor for this frame glEnable(GL_SCISSOR_TEST); } } } /* * and then, render the layers targeted at the framebuffer */ const Vector< sp >& layers(hw->getVisibleLayersSortedByZ()); const size_t count = layers.size(); const Transform& tr = hw->getTransform(); if (cur != end) { // we're using h/w composer for (size_t i=0 ; i& layer(layers[i]); const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); if (!clip.isEmpty()) { switch (cur->getCompositionType()) { case HWC_OVERLAY: { if ((cur->getHints() & HWC_HINT_CLEAR_FB) && i && layer->isOpaque() && hasGlesComposition) { // never clear the very first layer since we're // guaranteed the FB is already cleared layer->clearWithOpenGL(hw, clip); } break; } case HWC_FRAMEBUFFER: { layer->draw(hw, clip); break; } case HWC_FRAMEBUFFER_TARGET: { // this should not happen as the iterator shouldn't // let us get there. ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); break; } } } layer->setAcquireFence(hw, *cur); } } else { // we're not using h/w composer for (size_t i=0 ; i& layer(layers[i]); const Region clip(dirty.intersect( tr.transform(layer->visibleRegion))); if (!clip.isEmpty()) { layer->draw(hw, clip); } } } // disable scissor at the end of the frame glDisable(GL_SCISSOR_TEST); } void SurfaceFlinger::drawWormhole(const sp& hw, const Region& region) const { glDisable(GL_TEXTURE_EXTERNAL_OES); glDisable(GL_TEXTURE_2D); glDisable(GL_BLEND); glColor4f(0,0,0,0); const int32_t height = hw->getHeight(); Region::const_iterator it = region.begin(); Region::const_iterator const end = region.end(); while (it != end) { const Rect& r = *it++; GLfloat vertices[][2] = { { (GLfloat) r.left, (GLfloat) (height - r.top) }, { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, { (GLfloat) r.right, (GLfloat) (height - r.top) } }; glVertexPointer(2, GL_FLOAT, 0, vertices); glDrawArrays(GL_TRIANGLE_FAN, 0, 4); } } void SurfaceFlinger::addClientLayer(const sp& client, const sp& handle, const sp& gbc, const sp& lbc) { // attach this layer to the client client->attachLayer(handle, lbc); // add this layer to the current state list Mutex::Autolock _l(mStateLock); mCurrentState.layersSortedByZ.add(lbc); mGraphicBufferProducerList.add(gbc->asBinder()); } status_t SurfaceFlinger::removeLayer(const sp& layer) { Mutex::Autolock _l(mStateLock); ssize_t index = mCurrentState.layersSortedByZ.remove(layer); if (index >= 0) { mLayersPendingRemoval.push(layer); mLayersRemoved = true; setTransactionFlags(eTransactionNeeded); return NO_ERROR; } return status_t(index); } uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) { return android_atomic_release_load(&mTransactionFlags); } 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 signalTransaction(); } return old; } void SurfaceFlinger::setTransactionState( const Vector& state, const Vector& displays, uint32_t flags) { ATRACE_CALL(); Mutex::Autolock _l(mStateLock); uint32_t transactionFlags = 0; if (flags & eAnimation) { // For window updates that are part of an animation we must wait for // previous animation "frames" to be handled. while (mAnimTransactionPending) { 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 // caller after a few seconds. ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " "waiting for previous animation frame"); mAnimTransactionPending = false; break; } } } size_t count = displays.size(); for (size_t i=0 ; i binder = s.client->asBinder(); if (binder != NULL) { String16 desc(binder->getInterfaceDescriptor()); if (desc == ISurfaceComposerClient::descriptor) { sp client( static_cast(s.client.get()) ); transactionFlags |= setClientStateLocked(client, s.state); } } } } if (transactionFlags) { // this triggers the transaction setTransactionFlags(transactionFlags); // if this is a synchronous transaction, wait for it to take effect // before returning. if (flags & eSynchronous) { mTransactionPending = true; } if (flags & eAnimation) { mAnimTransactionPending = true; } while (mTransactionPending) { 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. ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); mTransactionPending = false; break; } } } } uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) { ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); if (dpyIdx < 0) return 0; uint32_t flags = 0; DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); if (disp.isValid()) { const uint32_t what = s.what; if (what & DisplayState::eSurfaceChanged) { if (disp.surface->asBinder() != s.surface->asBinder()) { disp.surface = s.surface; flags |= eDisplayTransactionNeeded; } } if (what & DisplayState::eLayerStackChanged) { if (disp.layerStack != s.layerStack) { disp.layerStack = s.layerStack; flags |= eDisplayTransactionNeeded; } } if (what & DisplayState::eDisplayProjectionChanged) { if (disp.orientation != s.orientation) { disp.orientation = s.orientation; flags |= eDisplayTransactionNeeded; } if (disp.frame != s.frame) { disp.frame = s.frame; flags |= eDisplayTransactionNeeded; } if (disp.viewport != s.viewport) { disp.viewport = s.viewport; flags |= eDisplayTransactionNeeded; } } } return flags; } uint32_t SurfaceFlinger::setClientStateLocked( const sp& client, const layer_state_t& s) { uint32_t flags = 0; sp layer(client->getLayerUser(s.surface)); if (layer != 0) { const uint32_t what = s.what; if (what & layer_state_t::ePositionChanged) { if (layer->setPosition(s.x, s.y)) flags |= eTraversalNeeded; } if (what & layer_state_t::eLayerChanged) { // NOTE: index needs to be calculated before we update the state ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); if (layer->setLayer(s.z)) { mCurrentState.layersSortedByZ.removeAt(idx); mCurrentState.layersSortedByZ.add(layer); // we need traversal (state changed) // AND transaction (list changed) flags |= eTransactionNeeded|eTraversalNeeded; } } if (what & layer_state_t::eSizeChanged) { if (layer->setSize(s.w, s.h)) { flags |= eTraversalNeeded; } } if (what & layer_state_t::eAlphaChanged) { if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) flags |= eTraversalNeeded; } if (what & layer_state_t::eMatrixChanged) { if (layer->setMatrix(s.matrix)) flags |= eTraversalNeeded; } if (what & layer_state_t::eTransparentRegionChanged) { if (layer->setTransparentRegionHint(s.transparentRegion)) flags |= eTraversalNeeded; } if (what & layer_state_t::eVisibilityChanged) { if (layer->setFlags(s.flags, s.mask)) flags |= eTraversalNeeded; } if (what & layer_state_t::eCropChanged) { if (layer->setCrop(s.crop)) flags |= eTraversalNeeded; } if (what & layer_state_t::eLayerStackChanged) { // NOTE: index needs to be calculated before we update the state ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); if (layer->setLayerStack(s.layerStack)) { mCurrentState.layersSortedByZ.removeAt(idx); mCurrentState.layersSortedByZ.add(layer); // we need traversal (state changed) // AND transaction (list changed) flags |= eTransactionNeeded|eTraversalNeeded; } } } return flags; } status_t SurfaceFlinger::createLayer( const String8& name, const sp& client, uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, sp* handle, sp* gbp) { //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); if (int32_t(w|h) < 0) { ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", int(w), int(h)); return BAD_VALUE; } status_t result = NO_ERROR; sp layer; switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { case ISurfaceComposerClient::eFXSurfaceNormal: result = createNormalLayer(client, name, w, h, flags, format, handle, gbp, &layer); break; case ISurfaceComposerClient::eFXSurfaceDim: result = createDimLayer(client, name, w, h, flags, handle, gbp, &layer); break; default: result = BAD_VALUE; break; } if (result == NO_ERROR) { addClientLayer(client, *handle, *gbp, layer); setTransactionFlags(eTransactionNeeded); } return result; } status_t SurfaceFlinger::createNormalLayer(const sp& client, const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, sp* handle, sp* gbp, sp* outLayer) { // initialize the surfaces switch (format) { 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 *outLayer = new Layer(this, client, name, w, h, flags); status_t err = (*outLayer)->setBuffers(w, h, format, flags); if (err == NO_ERROR) { *handle = (*outLayer)->getHandle(); *gbp = (*outLayer)->getBufferQueue(); } ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); return err; } status_t SurfaceFlinger::createDimLayer(const sp& client, const String8& name, uint32_t w, uint32_t h, uint32_t flags, sp* handle, sp* gbp, sp* outLayer) { *outLayer = new LayerDim(this, client, name, w, h, flags); *handle = (*outLayer)->getHandle(); *gbp = (*outLayer)->getBufferQueue(); return NO_ERROR; } status_t SurfaceFlinger::onLayerRemoved(const sp& client, const sp& handle) { // called by the window manager when it wants to remove a Layer status_t err = NO_ERROR; sp l(client->getLayerUser(handle)); if (l != NULL) { err = removeLayer(l); ALOGE_IF(err<0 && err != NAME_NOT_FOUND, "error removing layer=%p (%s)", l.get(), strerror(-err)); } return err; } status_t SurfaceFlinger::onLayerDestroyed(const wp& layer) { // called by ~LayerCleaner() when all references to the IBinder (handle) // are gone status_t err = NO_ERROR; sp l(layer.promote()); if (l != NULL) { err = removeLayer(l); ALOGE_IF(err<0 && err != NAME_NOT_FOUND, "error removing layer=%p (%s)", l.get(), strerror(-err)); } return err; } // --------------------------------------------------------------------------- void SurfaceFlinger::onInitializeDisplays() { // reset screen orientation and use primary layer stack Vector state; Vector displays; DisplayState d; d.what = DisplayState::eDisplayProjectionChanged | DisplayState::eLayerStackChanged; d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; d.layerStack = 0; d.orientation = DisplayState::eOrientationDefault; d.frame.makeInvalid(); d.viewport.makeInvalid(); displays.add(d); setTransactionState(state, displays, 0); onScreenAcquired(getDefaultDisplayDevice()); } void SurfaceFlinger::initializeDisplays() { class MessageScreenInitialized : public MessageBase { SurfaceFlinger* flinger; public: MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } virtual bool handler() { flinger->onInitializeDisplays(); return true; } }; sp msg = new MessageScreenInitialized(this); postMessageAsync(msg); // we may be called from main thread, use async message } void SurfaceFlinger::onScreenAcquired(const sp& hw) { ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); if (hw->isScreenAcquired()) { // this is expected, e.g. when power manager wakes up during boot ALOGD(" screen was previously acquired"); return; } hw->acquireScreen(); int32_t type = hw->getDisplayType(); if (type < DisplayDevice::NUM_DISPLAY_TYPES) { // built-in display, tell the HWC getHwComposer().acquire(type); if (type == DisplayDevice::DISPLAY_PRIMARY) { // FIXME: eventthread only knows about the main display right now mEventThread->onScreenAcquired(); } } mVisibleRegionsDirty = true; repaintEverything(); } void SurfaceFlinger::onScreenReleased(const sp& hw) { ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); if (!hw->isScreenAcquired()) { ALOGD(" screen was previously released"); return; } hw->releaseScreen(); int32_t type = hw->getDisplayType(); if (type < DisplayDevice::NUM_DISPLAY_TYPES) { if (type == DisplayDevice::DISPLAY_PRIMARY) { // FIXME: eventthread only knows about the main display right now mEventThread->onScreenReleased(); } // built-in display, tell the HWC getHwComposer().release(type); } mVisibleRegionsDirty = true; // from this point on, SF will stop drawing on this display } void SurfaceFlinger::unblank(const sp& display) { class MessageScreenAcquired : public MessageBase { SurfaceFlinger& mFlinger; sp mDisplay; public: MessageScreenAcquired(SurfaceFlinger& flinger, const sp& disp) : mFlinger(flinger), mDisplay(disp) { } virtual bool handler() { const sp hw(mFlinger.getDisplayDevice(mDisplay)); if (hw == NULL) { ALOGE("Attempt to unblank null display %p", mDisplay.get()); } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { ALOGW("Attempt to unblank virtual display"); } else { mFlinger.onScreenAcquired(hw); } return true; } }; sp msg = new MessageScreenAcquired(*this, display); postMessageSync(msg); } void SurfaceFlinger::blank(const sp& display) { class MessageScreenReleased : public MessageBase { SurfaceFlinger& mFlinger; sp mDisplay; public: MessageScreenReleased(SurfaceFlinger& flinger, const sp& disp) : mFlinger(flinger), mDisplay(disp) { } virtual bool handler() { const sp hw(mFlinger.getDisplayDevice(mDisplay)); if (hw == NULL) { ALOGE("Attempt to blank null display %p", mDisplay.get()); } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { ALOGW("Attempt to blank virtual display"); } else { mFlinger.onScreenReleased(hw); } return true; } }; sp msg = new MessageScreenReleased(*this, display); postMessageSync(msg); } // --------------------------------------------------------------------------- status_t SurfaceFlinger::dump(int fd, const Vector& args) { const size_t SIZE = 4096; char buffer[SIZE]; String8 result; IPCThreadState* ipc = IPCThreadState::self(); const int pid = ipc->getCallingPid(); const int uid = ipc->getCallingUid(); if ((uid != AID_SHELL) && !PermissionCache::checkPermission(sDump, pid, uid)) { snprintf(buffer, SIZE, "Permission Denial: " "can't dump SurfaceFlinger from pid=%d, uid=%d\n", pid, uid); result.append(buffer); } else { // 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); } bool dumpAll = true; size_t index = 0; size_t numArgs = args.size(); if (numArgs) { if ((index < numArgs) && (args[index] == String16("--list"))) { index++; listLayersLocked(args, index, result, buffer, SIZE); dumpAll = false; } if ((index < numArgs) && (args[index] == String16("--latency"))) { index++; dumpStatsLocked(args, index, result, buffer, SIZE); dumpAll = false; } if ((index < numArgs) && (args[index] == String16("--latency-clear"))) { index++; clearStatsLocked(args, index, result, buffer, SIZE); dumpAll = false; } } if (dumpAll) { dumpAllLocked(result, buffer, SIZE); } if (locked) { mStateLock.unlock(); } } write(fd, result.string(), result.size()); return NO_ERROR; } void SurfaceFlinger::listLayersLocked(const Vector& args, size_t& index, String8& result, char* buffer, size_t SIZE) const { const LayerVector& currentLayers = mCurrentState.layersSortedByZ; const size_t count = currentLayers.size(); for (size_t i=0 ; i& layer(currentLayers[i]); snprintf(buffer, SIZE, "%s\n", layer->getName().string()); result.append(buffer); } } void SurfaceFlinger::dumpStatsLocked(const Vector& args, size_t& index, String8& result, char* buffer, size_t SIZE) const { String8 name; if (index < args.size()) { name = String8(args[index]); index++; } const nsecs_t period = getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); result.appendFormat("%lld\n", period); if (name.isEmpty()) { mAnimFrameTracker.dump(result); } else { const LayerVector& currentLayers = mCurrentState.layersSortedByZ; const size_t count = currentLayers.size(); for (size_t i=0 ; i& layer(currentLayers[i]); if (name == layer->getName()) { layer->dumpStats(result, buffer, SIZE); } } } } void SurfaceFlinger::clearStatsLocked(const Vector& args, size_t& index, String8& result, char* buffer, size_t SIZE) { String8 name; if (index < args.size()) { name = String8(args[index]); index++; } const LayerVector& currentLayers = mCurrentState.layersSortedByZ; const size_t count = currentLayers.size(); for (size_t i=0 ; i& layer(currentLayers[i]); if (name.isEmpty() || (name == layer->getName())) { layer->clearStats(); } } mAnimFrameTracker.clear(); } /*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) { static const char* config = " [sf" #ifdef NO_RGBX_8888 " NO_RGBX_8888" #endif #ifdef HAS_CONTEXT_PRIORITY " HAS_CONTEXT_PRIORITY" #endif #ifdef NEVER_DEFAULT_TO_ASYNC_MODE " NEVER_DEFAULT_TO_ASYNC_MODE" #endif #ifdef TARGET_DISABLE_TRIPLE_BUFFERING " TARGET_DISABLE_TRIPLE_BUFFERING" #endif "]"; result.append(config); } void SurfaceFlinger::dumpAllLocked( String8& result, char* buffer, size_t SIZE) const { // 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; /* * Dump library configuration. */ result.append("Build configuration:"); appendSfConfigString(result); appendUiConfigString(result); appendGuiConfigString(result); result.append("\n"); result.append("Sync configuration: "); result.append(SyncFeatures::getInstance().toString()); result.append("\n"); /* * Dump the visible layer list */ const LayerVector& currentLayers = mCurrentState.layersSortedByZ; const size_t count = currentLayers.size(); snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); result.append(buffer); for (size_t i=0 ; i& layer(currentLayers[i]); layer->dump(result, buffer, SIZE); } /* * Dump Display state */ snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); result.append(buffer); for (size_t dpy=0 ; dpy& hw(mDisplays[dpy]); hw->dump(result, buffer, SIZE); } /* * Dump SurfaceFlinger global state */ snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); result.append(buffer); HWComposer& hwc(getHwComposer()); sp hw(getDefaultDisplayDevice()); const GLExtensions& extensions(GLExtensions::getInstance()); snprintf(buffer, SIZE, "EGL implementation : %s\n", eglQueryStringImplementationANDROID(mEGLDisplay, EGL_VERSION)); result.append(buffer); snprintf(buffer, SIZE, "%s\n", eglQueryStringImplementationANDROID(mEGLDisplay, EGL_EXTENSIONS)); result.append(buffer); snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", extensions.getVendor(), extensions.getRenderer(), extensions.getVersion()); result.append(buffer); snprintf(buffer, SIZE, "%s\n", extensions.getExtension()); result.append(buffer); hw->undefinedRegion.dump(result, "undefinedRegion"); snprintf(buffer, SIZE, " orientation=%d, canDraw=%d\n", hw->getOrientation(), hw->canDraw()); result.append(buffer); snprintf(buffer, SIZE, " last eglSwapBuffers() time: %f us\n" " last transaction time : %f us\n" " transaction-flags : %08x\n" " refresh-rate : %f fps\n" " x-dpi : %f\n" " y-dpi : %f\n" " EGL_NATIVE_VISUAL_ID : %d\n" " gpu_to_cpu_unsupported : %d\n" , mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0, mTransactionFlags, 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), hwc.getDpiX(HWC_DISPLAY_PRIMARY), hwc.getDpiY(HWC_DISPLAY_PRIMARY), mEGLNativeVisualId, !mGpuToCpuSupported); result.append(buffer); snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", inSwapBuffersDuration/1000.0); result.append(buffer); snprintf(buffer, SIZE, " transaction time: %f us\n", inTransactionDuration/1000.0); result.append(buffer); /* * VSYNC state */ mEventThread->dump(result, buffer, SIZE); /* * Dump HWComposer state */ snprintf(buffer, SIZE, "h/w composer state:\n"); result.append(buffer); snprintf(buffer, SIZE, " h/w composer %s and %s\n", hwc.initCheck()==NO_ERROR ? "present" : "not present", (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); result.append(buffer); hwc.dump(result, buffer, SIZE); /* * Dump gralloc state */ const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); alloc.dump(result); } const Vector< sp >& SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { // Note: mStateLock is held here wp dpy; for (size_t i=0 ; igetHwcDisplayId() == id) { dpy = mDisplays.keyAt(i); break; } } if (dpy == NULL) { ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); // Just use the primary display so we have something to return dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); } return getDisplayDevice(dpy)->getVisibleLayersSortedByZ(); } bool SurfaceFlinger::startDdmConnection() { void* libddmconnection_dso = dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); if (!libddmconnection_dso) { return false; } void (*DdmConnection_start)(const char* name); DdmConnection_start = (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); if (!DdmConnection_start) { dlclose(libddmconnection_dso); return false; } (*DdmConnection_start)(getServiceName()); return true; } status_t SurfaceFlinger::onTransact( uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { switch (code) { case CREATE_CONNECTION: case CREATE_DISPLAY: case SET_TRANSACTION_STATE: case BOOT_FINISHED: case BLANK: case UNBLANK: { // codes that require permission check IPCThreadState* ipc = IPCThreadState::self(); const int pid = ipc->getCallingPid(); const int uid = ipc->getCallingUid(); if ((uid != AID_GRAPHICS) && !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { ALOGE("Permission Denial: " "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); return PERMISSION_DENIED; } break; } case CAPTURE_SCREEN: { // codes that require permission check IPCThreadState* ipc = IPCThreadState::self(); const int pid = ipc->getCallingPid(); const int uid = ipc->getCallingUid(); if ((uid != AID_GRAPHICS) && !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { ALOGE("Permission Denial: " "can't read framebuffer pid=%d, uid=%d", pid, uid); return PERMISSION_DENIED; } break; } } status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { CHECK_INTERFACE(ISurfaceComposer, data, reply); if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { IPCThreadState* ipc = IPCThreadState::self(); const int pid = ipc->getCallingPid(); const int uid = ipc->getCallingUid(); ALOGE("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 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE return NO_ERROR; case 1002: // SHOW_UPDATES n = data.readInt32(); mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); invalidateHwcGeometry(); repaintEverything(); return NO_ERROR; case 1004:{ // repaint everything repaintEverything(); return NO_ERROR; } case 1005:{ // force transaction setTransactionFlags( eTransactionNeeded| eDisplayTransactionNeeded| eTraversalNeeded); return NO_ERROR; } case 1006:{ // send empty update signalRefresh(); return NO_ERROR; } case 1008: // toggle use of hw composer n = data.readInt32(); mDebugDisableHWC = n ? 1 : 0; invalidateHwcGeometry(); repaintEverything(); return NO_ERROR; case 1009: // toggle use of transform hint n = data.readInt32(); mDebugDisableTransformHint = n ? 1 : 0; invalidateHwcGeometry(); repaintEverything(); return NO_ERROR; case 1010: // interrogate. reply->writeInt32(0); reply->writeInt32(0); reply->writeInt32(mDebugRegion); reply->writeInt32(0); reply->writeInt32(mDebugDisableHWC); return NO_ERROR; case 1013: { Mutex::Autolock _l(mStateLock); sp hw(getDefaultDisplayDevice()); reply->writeInt32(hw->getPageFlipCount()); } return NO_ERROR; } } return err; } void SurfaceFlinger::repaintEverything() { android_atomic_or(1, &mRepaintEverything); signalTransaction(); } // --------------------------------------------------------------------------- // Capture screen into an IGraphiBufferProducer // --------------------------------------------------------------------------- status_t SurfaceFlinger::captureScreen(const sp& display, const sp& producer, uint32_t reqWidth, uint32_t reqHeight, uint32_t minLayerZ, uint32_t maxLayerZ, bool isCpuConsumer) { if (CC_UNLIKELY(display == 0)) return BAD_VALUE; if (CC_UNLIKELY(producer == 0)) return BAD_VALUE; class MessageCaptureScreen : public MessageBase { SurfaceFlinger* flinger; sp display; sp producer; uint32_t reqWidth, reqHeight; uint32_t minLayerZ,maxLayerZ; bool isCpuConsumer; status_t result; public: MessageCaptureScreen(SurfaceFlinger* flinger, const sp& display, const sp& producer, uint32_t reqWidth, uint32_t reqHeight, uint32_t minLayerZ, uint32_t maxLayerZ, bool isCpuConsumer) : flinger(flinger), display(display), producer(producer), reqWidth(reqWidth), reqHeight(reqHeight), minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), isCpuConsumer(isCpuConsumer), result(PERMISSION_DENIED) { } status_t getResult() const { return result; } virtual bool handler() { Mutex::Autolock _l(flinger->mStateLock); sp hw(flinger->getDisplayDevice(display)); bool useReadPixels = false; if (isCpuConsumer) { bool formatSupportedBytBitmap = (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBA_8888) || (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBX_8888); if (formatSupportedBytBitmap == false) { // the pixel format we have is not compatible with // Bitmap.java, which is the likely client of this API, // so we just revert to glReadPixels() in that case. useReadPixels = true; } if (flinger->mGpuToCpuSupported == false) { // When we know the GL->CPU path works, we can call // captureScreenImplLocked() directly, instead of using the // glReadPixels() workaround. useReadPixels = true; } } if (!useReadPixels) { result = flinger->captureScreenImplLocked(hw, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); } else { result = flinger->captureScreenImplCpuConsumerLocked(hw, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); } return true; } }; // make sure to process transactions before screenshots -- a transaction // might already be pending but scheduled for VSYNC; this guarantees we // will handle it before the screenshot. When VSYNC finally arrives // the scheduled transaction will be a no-op. If no transactions are // scheduled at this time, this will end-up being a no-op as well. mEventQueue.invalidateTransactionNow(); sp msg = new MessageCaptureScreen(this, display, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ, isCpuConsumer); status_t res = postMessageSync(msg); if (res == NO_ERROR) { res = static_cast( msg.get() )->getResult(); } return res; } void SurfaceFlinger::renderScreenImplLocked( const sp& hw, uint32_t reqWidth, uint32_t reqHeight, uint32_t minLayerZ, uint32_t maxLayerZ, bool yswap) { ATRACE_CALL(); // get screen geometry const uint32_t hw_w = hw->getWidth(); const uint32_t hw_h = hw->getHeight(); const bool filtering = reqWidth != hw_w || reqWidth != hw_h; // make sure to clear all GL error flags while ( glGetError() != GL_NO_ERROR ) ; // set-up our viewport glViewport(0, 0, reqWidth, reqHeight); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if (yswap) glOrthof(0, hw_w, hw_h, 0, 0, 1); else glOrthof(0, hw_w, 0, hw_h, 0, 1); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); // redraw the screen entirely... glDisable(GL_SCISSOR_TEST); glClearColor(0,0,0,1); glClear(GL_COLOR_BUFFER_BIT); glDisable(GL_TEXTURE_EXTERNAL_OES); glDisable(GL_TEXTURE_2D); const LayerVector& layers( mDrawingState.layersSortedByZ ); const size_t count = layers.size(); for (size_t i=0 ; i& layer(layers[i]); const Layer::State& state(layer->drawingState()); if (state.layerStack == hw->getLayerStack()) { if (state.z >= minLayerZ && state.z <= maxLayerZ) { if (layer->isVisible()) { if (filtering) layer->setFiltering(true); layer->draw(hw); if (filtering) layer->setFiltering(false); } } } } // compositionComplete is needed for older driver hw->compositionComplete(); } status_t SurfaceFlinger::captureScreenImplLocked( const sp& hw, const sp& producer, uint32_t reqWidth, uint32_t reqHeight, uint32_t minLayerZ, uint32_t maxLayerZ) { ATRACE_CALL(); // get screen geometry const uint32_t hw_w = hw->getWidth(); const uint32_t hw_h = hw->getHeight(); // if we have secure windows on this display, never allow the screen capture if (hw->getSecureLayerVisible()) { ALOGW("FB is protected: PERMISSION_DENIED"); return PERMISSION_DENIED; } if ((reqWidth > hw_w) || (reqHeight > hw_h)) { ALOGE("size mismatch (%d, %d) > (%d, %d)", reqWidth, reqHeight, hw_w, hw_h); return BAD_VALUE; } reqWidth = (!reqWidth) ? hw_w : reqWidth; reqHeight = (!reqHeight) ? hw_h : reqHeight; // Create a surface to render into sp surface = new Surface(producer); ANativeWindow* const window = surface.get(); // set the buffer size to what the user requested native_window_set_buffers_user_dimensions(window, reqWidth, reqHeight); // and create the corresponding EGLSurface EGLSurface eglSurface = eglCreateWindowSurface( mEGLDisplay, mEGLConfig, window, NULL); if (eglSurface == EGL_NO_SURFACE) { ALOGE("captureScreenImplLocked: eglCreateWindowSurface() failed 0x%4x", eglGetError()); return BAD_VALUE; } if (!eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) { ALOGE("captureScreenImplLocked: eglMakeCurrent() failed 0x%4x", eglGetError()); eglDestroySurface(mEGLDisplay, eglSurface); return BAD_VALUE; } renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, false); // and finishing things up... if (eglSwapBuffers(mEGLDisplay, eglSurface) != EGL_TRUE) { ALOGE("captureScreenImplLocked: eglSwapBuffers() failed 0x%4x", eglGetError()); eglDestroySurface(mEGLDisplay, eglSurface); return BAD_VALUE; } eglDestroySurface(mEGLDisplay, eglSurface); return NO_ERROR; } status_t SurfaceFlinger::captureScreenImplCpuConsumerLocked( const sp& hw, const sp& producer, uint32_t reqWidth, uint32_t reqHeight, uint32_t minLayerZ, uint32_t maxLayerZ) { ATRACE_CALL(); if (!GLExtensions::getInstance().haveFramebufferObject()) { return INVALID_OPERATION; } // get screen geometry const uint32_t hw_w = hw->getWidth(); const uint32_t hw_h = hw->getHeight(); // if we have secure windows on this display, never allow the screen capture if (hw->getSecureLayerVisible()) { ALOGW("FB is protected: PERMISSION_DENIED"); return PERMISSION_DENIED; } if ((reqWidth > hw_w) || (reqHeight > hw_h)) { ALOGE("size mismatch (%d, %d) > (%d, %d)", reqWidth, reqHeight, hw_w, hw_h); return BAD_VALUE; } reqWidth = (!reqWidth) ? hw_w : reqWidth; reqHeight = (!reqHeight) ? hw_h : reqHeight; GLuint tname; glGenRenderbuffersOES(1, &tname); glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, reqWidth, reqHeight); // create a FBO GLuint name; glGenFramebuffersOES(1, &name); glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); status_t result = NO_ERROR; if (status == GL_FRAMEBUFFER_COMPLETE_OES) { renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, true); // Below we render the screenshot into the // CpuConsumer using glReadPixels from our FBO. // Some older drivers don't support the GL->CPU path so we // have to wrap it with a CPU->CPU path, which is what // glReadPixels essentially is. sp sur = new Surface(producer); ANativeWindow* window = sur.get(); if (native_window_api_connect(window, NATIVE_WINDOW_API_CPU) == NO_ERROR) { int err = 0; err = native_window_set_buffers_dimensions(window, reqWidth, reqHeight); err |= native_window_set_buffers_format(window, HAL_PIXEL_FORMAT_RGBA_8888); err |= native_window_set_usage(window, GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN); if (err == NO_ERROR) { ANativeWindowBuffer* buffer; if (native_window_dequeue_buffer_and_wait(window, &buffer) == NO_ERROR) { sp buf = static_cast(buffer); void* vaddr; if (buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, &vaddr) == NO_ERROR) { glReadPixels(0, 0, buffer->stride, reqHeight, GL_RGBA, GL_UNSIGNED_BYTE, vaddr); buf->unlock(); } window->queueBuffer(window, buffer, -1); } } native_window_api_disconnect(window, NATIVE_WINDOW_API_CPU); } } else { ALOGE("got GL_FRAMEBUFFER_COMPLETE_OES while taking screenshot"); result = INVALID_OPERATION; } // back to main framebuffer glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); glDeleteRenderbuffersOES(1, &tname); glDeleteFramebuffersOES(1, &name); DisplayDevice::setViewportAndProjection(hw); return result; } // --------------------------------------------------------------------------- SurfaceFlinger::LayerVector::LayerVector() { } SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) : SortedVector >(rhs) { } int SurfaceFlinger::LayerVector::do_compare(const void* lhs, const void* rhs) const { // sort layers per layer-stack, then by z-order and finally by sequence const sp& l(*reinterpret_cast*>(lhs)); const sp& r(*reinterpret_cast*>(rhs)); uint32_t ls = l->currentState().layerStack; uint32_t rs = r->currentState().layerStack; if (ls != rs) return ls - rs; uint32_t lz = l->currentState().z; uint32_t rz = r->currentState().z; if (lz != rz) return lz - rz; return l->sequence - r->sequence; } // --------------------------------------------------------------------------- SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() : type(DisplayDevice::DISPLAY_ID_INVALID) { } SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) : type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) { viewport.makeInvalid(); frame.makeInvalid(); } // --------------------------------------------------------------------------- }; // namespace android