Revert "Delete HWC1"
This reverts commit 90f923493fa053655a203c34ea491086aeb07602.
Change-Id: If9da49e3bc85f8ff21ac1bd22a6bab97e9aa3103
diff --git a/services/surfaceflinger/SurfaceFlinger_hwc1.cpp b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
new file mode 100644
index 0000000..3ae2c04
--- /dev/null
+++ b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
@@ -0,0 +1,3827 @@
+/*
+ * 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 <stdint.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <math.h>
+#include <mutex>
+#include <dlfcn.h>
+#include <inttypes.h>
+#include <stdatomic.h>
+
+#include <EGL/egl.h>
+
+#include <cutils/log.h>
+#include <cutils/properties.h>
+
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+#include <binder/MemoryHeapBase.h>
+#include <binder/PermissionCache.h>
+
+#include <ui/DisplayInfo.h>
+#include <ui/DisplayStatInfo.h>
+
+#include <gui/BitTube.h>
+#include <gui/BufferQueue.h>
+#include <gui/GuiConfig.h>
+#include <gui/IDisplayEventConnection.h>
+#include <gui/Surface.h>
+#include <gui/GraphicBufferAlloc.h>
+
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/HdrCapabilities.h>
+#include <ui/PixelFormat.h>
+#include <ui/UiConfig.h>
+
+#include <utils/misc.h>
+#include <utils/String8.h>
+#include <utils/String16.h>
+#include <utils/StopWatch.h>
+#include <utils/Timers.h>
+#include <utils/Trace.h>
+
+#include <private/android_filesystem_config.h>
+#include <private/gui/SyncFeatures.h>
+
+#include <set>
+
+#include "Client.h"
+#include "clz.h"
+#include "Colorizer.h"
+#include "DdmConnection.h"
+#include "DisplayDevice.h"
+#include "DispSync.h"
+#include "EventControlThread.h"
+#include "EventThread.h"
+#include "Layer.h"
+#include "LayerDim.h"
+#include "SurfaceFlinger.h"
+
+#include "DisplayHardware/FramebufferSurface.h"
+#include "DisplayHardware/HWComposer.h"
+#include "DisplayHardware/VirtualDisplaySurface.h"
+
+#include "Effects/Daltonizer.h"
+
+#include "RenderEngine/RenderEngine.h"
+#include <cutils/compiler.h>
+
+#define DISPLAY_COUNT 1
+
+/*
+ * DEBUG_SCREENSHOTS: set to true to check that screenshots are not all
+ * black pixels.
+ */
+#define DEBUG_SCREENSHOTS false
+
+EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
+
+// Workaround for b/30067360: /proc/self/environ inaccessible in SurfaceFlinger
+// => ASan fails to read ASAN_OPTIONS => alloc-dealloc-mismatch bug is not
+// suppressed and prevents the device from booting.
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+#if __has_feature(address_sanitizer)
+__attribute__((visibility("default")))
+extern "C" const char *__asan_default_options() {
+ return "alloc_dealloc_mismatch=0";
+}
+#endif
+
+namespace android {
+
+// This is the phase offset in nanoseconds of the software vsync event
+// relative to the vsync event reported by HWComposer. The software vsync
+// event is when SurfaceFlinger and Choreographer-based applications run each
+// frame.
+//
+// This phase offset allows adjustment of the minimum latency from application
+// wake-up (by Choregographer) time to the time at which the resulting window
+// image is displayed. This value may be either positive (after the HW vsync)
+// or negative (before the HW vsync). Setting it to 0 will result in a
+// minimum latency of two vsync periods because the app and SurfaceFlinger
+// will run just after the HW vsync. Setting it to a positive number will
+// result in the minimum latency being:
+//
+// (2 * VSYNC_PERIOD - (vsyncPhaseOffsetNs % VSYNC_PERIOD))
+//
+// Note that reducing this latency makes it more likely for the applications
+// to not have their window content image ready in time. When this happens
+// the latency will end up being an additional vsync period, and animations
+// will hiccup. Therefore, this latency should be tuned somewhat
+// conservatively (or at least with awareness of the trade-off being made).
+static const int64_t vsyncPhaseOffsetNs = VSYNC_EVENT_PHASE_OFFSET_NS;
+
+// This is the phase offset at which SurfaceFlinger's composition runs.
+static const int64_t sfVsyncPhaseOffsetNs = SF_VSYNC_EVENT_PHASE_OFFSET_NS;
+
+// ---------------------------------------------------------------------------
+
+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(),
+ mTransactionFlags(0),
+ mTransactionPending(false),
+ mAnimTransactionPending(false),
+ mLayersRemoved(false),
+ mRepaintEverything(0),
+ mRenderEngine(NULL),
+ 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),
+ mForceFullDamage(false),
+ mInterceptor(),
+ mPrimaryDispSync("PrimaryDispSync"),
+ mPrimaryHWVsyncEnabled(false),
+ mHWVsyncAvailable(false),
+ mDaltonize(false),
+ mHasColorMatrix(false),
+ mHasPoweredOff(false),
+ mFrameBuckets(),
+ mTotalTime(0),
+ mLastSwapTime(0)
+{
+ 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");
+
+ property_get("debug.sf.disable_hwc_vds", value, "0");
+ mUseHwcVirtualDisplays = !atoi(value);
+ ALOGI_IF(!mUseHwcVirtualDisplays, "Disabling HWC virtual displays");
+}
+
+void SurfaceFlinger::onFirstRef()
+{
+ mEventQueue.init(this);
+}
+
+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<IBinder>& /* who */)
+{
+ // the window manager died on us. prepare its eulogy.
+
+ // restore initial conditions (default device unblank, etc)
+ initializeDisplays();
+
+ // restart the boot-animation
+ startBootAnim();
+}
+
+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<IBinder> SurfaceFlinger::createDisplay(const String8& displayName,
+ bool secure)
+{
+ class DisplayToken : public BBinder {
+ sp<SurfaceFlinger> 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:
+ explicit DisplayToken(const sp<SurfaceFlinger>& flinger)
+ : flinger(flinger) {
+ }
+ };
+
+ sp<BBinder> token = new DisplayToken(this);
+
+ Mutex::Autolock _l(mStateLock);
+ DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL, secure);
+ info.displayName = displayName;
+ mCurrentState.displays.add(token, info);
+ mInterceptor.saveDisplayCreation(info);
+ return token;
+}
+
+void SurfaceFlinger::destroyDisplay(const sp<IBinder>& display) {
+ Mutex::Autolock _l(mStateLock);
+
+ ssize_t idx = mCurrentState.displays.indexOfKey(display);
+ if (idx < 0) {
+ ALOGW("destroyDisplay: invalid display token");
+ return;
+ }
+
+ const DisplayDeviceState& info(mCurrentState.displays.valueAt(idx));
+ if (!info.isVirtualDisplay()) {
+ ALOGE("destroyDisplay called for non-virtual display");
+ return;
+ }
+ mInterceptor.saveDisplayDeletion(info.displayId);
+ mCurrentState.displays.removeItemsAt(idx);
+ setTransactionFlags(eDisplayTransactionNeeded);
+}
+
+void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) {
+ ALOGW_IF(mBuiltinDisplays[type],
+ "Overwriting display token for display type %d", type);
+ mBuiltinDisplays[type] = new BBinder();
+ // All non-virtual displays are currently considered secure.
+ DisplayDeviceState info(type, true);
+ mCurrentState.displays.add(mBuiltinDisplays[type], info);
+ mInterceptor.saveDisplayCreation(info);
+}
+
+sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) {
+ if (uint32_t(id) >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) {
+ ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id);
+ return NULL;
+ }
+ return mBuiltinDisplays[id];
+}
+
+sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc()
+{
+ sp<GraphicBufferAlloc> 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<IBinder> window(defaultServiceManager()->getService(name));
+ if (window != 0) {
+ window->linkToDeath(static_cast<IBinder::DeathRecipient*>(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");
+
+ const int LOGTAG_SF_STOP_BOOTANIM = 60110;
+ LOG_EVENT_LONG(LOGTAG_SF_STOP_BOOTANIM,
+ ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
+}
+
+void SurfaceFlinger::deleteTextureAsync(uint32_t texture) {
+ class MessageDestroyGLTexture : public MessageBase {
+ RenderEngine& engine;
+ uint32_t texture;
+ public:
+ MessageDestroyGLTexture(RenderEngine& engine, uint32_t texture)
+ : engine(engine), texture(texture) {
+ }
+ virtual bool handler() {
+ engine.deleteTextures(1, &texture);
+ return true;
+ }
+ };
+ postMessageAsync(new MessageDestroyGLTexture(getRenderEngine(), texture));
+}
+
+class DispSyncSource : public VSyncSource, private DispSync::Callback {
+public:
+ DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync,
+ const char* name) :
+ mName(name),
+ mValue(0),
+ mTraceVsync(traceVsync),
+ mVsyncOnLabel(String8::format("VsyncOn-%s", name)),
+ mVsyncEventLabel(String8::format("VSYNC-%s", name)),
+ mDispSync(dispSync),
+ mCallbackMutex(),
+ mCallback(),
+ mVsyncMutex(),
+ mPhaseOffset(phaseOffset),
+ mEnabled(false) {}
+
+ virtual ~DispSyncSource() {}
+
+ virtual void setVSyncEnabled(bool enable) {
+ Mutex::Autolock lock(mVsyncMutex);
+ if (enable) {
+ status_t err = mDispSync->addEventListener(mName, mPhaseOffset,
+ static_cast<DispSync::Callback*>(this));
+ if (err != NO_ERROR) {
+ ALOGE("error registering vsync callback: %s (%d)",
+ strerror(-err), err);
+ }
+ //ATRACE_INT(mVsyncOnLabel.string(), 1);
+ } else {
+ status_t err = mDispSync->removeEventListener(
+ static_cast<DispSync::Callback*>(this));
+ if (err != NO_ERROR) {
+ ALOGE("error unregistering vsync callback: %s (%d)",
+ strerror(-err), err);
+ }
+ //ATRACE_INT(mVsyncOnLabel.string(), 0);
+ }
+ mEnabled = enable;
+ }
+
+ virtual void setCallback(const sp<VSyncSource::Callback>& callback) {
+ Mutex::Autolock lock(mCallbackMutex);
+ mCallback = callback;
+ }
+
+ virtual void setPhaseOffset(nsecs_t phaseOffset) {
+ Mutex::Autolock lock(mVsyncMutex);
+
+ // Normalize phaseOffset to [0, period)
+ auto period = mDispSync->getPeriod();
+ phaseOffset %= period;
+ if (phaseOffset < 0) {
+ // If we're here, then phaseOffset is in (-period, 0). After this
+ // operation, it will be in (0, period)
+ phaseOffset += period;
+ }
+ mPhaseOffset = phaseOffset;
+
+ // If we're not enabled, we don't need to mess with the listeners
+ if (!mEnabled) {
+ return;
+ }
+
+ // Remove the listener with the old offset
+ status_t err = mDispSync->removeEventListener(
+ static_cast<DispSync::Callback*>(this));
+ if (err != NO_ERROR) {
+ ALOGE("error unregistering vsync callback: %s (%d)",
+ strerror(-err), err);
+ }
+
+ // Add a listener with the new offset
+ err = mDispSync->addEventListener(mName, mPhaseOffset,
+ static_cast<DispSync::Callback*>(this));
+ if (err != NO_ERROR) {
+ ALOGE("error registering vsync callback: %s (%d)",
+ strerror(-err), err);
+ }
+ }
+
+private:
+ virtual void onDispSyncEvent(nsecs_t when) {
+ sp<VSyncSource::Callback> callback;
+ {
+ Mutex::Autolock lock(mCallbackMutex);
+ callback = mCallback;
+
+ if (mTraceVsync) {
+ mValue = (mValue + 1) % 2;
+ ATRACE_INT(mVsyncEventLabel.string(), mValue);
+ }
+ }
+
+ if (callback != NULL) {
+ callback->onVSyncEvent(when);
+ }
+ }
+
+ const char* const mName;
+
+ int mValue;
+
+ const bool mTraceVsync;
+ const String8 mVsyncOnLabel;
+ const String8 mVsyncEventLabel;
+
+ DispSync* mDispSync;
+
+ Mutex mCallbackMutex; // Protects the following
+ sp<VSyncSource::Callback> mCallback;
+
+ Mutex mVsyncMutex; // Protects the following
+ nsecs_t mPhaseOffset;
+ bool mEnabled;
+};
+
+class InjectVSyncSource : public VSyncSource {
+public:
+ InjectVSyncSource() {}
+
+ virtual ~InjectVSyncSource() {}
+
+ virtual void setCallback(const sp<VSyncSource::Callback>& callback) {
+ std::lock_guard<std::mutex> lock(mCallbackMutex);
+ mCallback = callback;
+ }
+
+ virtual void onInjectSyncEvent(nsecs_t when) {
+ std::lock_guard<std::mutex> lock(mCallbackMutex);
+ mCallback->onVSyncEvent(when);
+ }
+
+ virtual void setVSyncEnabled(bool) {}
+ virtual void setPhaseOffset(nsecs_t) {}
+
+private:
+ std::mutex mCallbackMutex; // Protects the following
+ sp<VSyncSource::Callback> mCallback;
+};
+
+void SurfaceFlinger::init() {
+ 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);
+
+ // start the EventThread
+ sp<VSyncSource> vsyncSrc = new DispSyncSource(&mPrimaryDispSync,
+ vsyncPhaseOffsetNs, true, "app");
+ mEventThread = new EventThread(vsyncSrc, *this, false);
+ sp<VSyncSource> sfVsyncSrc = new DispSyncSource(&mPrimaryDispSync,
+ sfVsyncPhaseOffsetNs, true, "sf");
+ mSFEventThread = new EventThread(sfVsyncSrc, *this, true);
+ mEventQueue.setEventThread(mSFEventThread);
+
+ // set SFEventThread to SCHED_FIFO to minimize jitter
+ struct sched_param param = {0};
+ param.sched_priority = 2;
+ if (sched_setscheduler(mSFEventThread->getTid(), SCHED_FIFO, ¶m) != 0) {
+ ALOGE("Couldn't set SCHED_FIFO for SFEventThread");
+ }
+
+
+ // Initialize the H/W composer object. There may or may not be an
+ // actual hardware composer underneath.
+ mHwc = new HWComposer(this,
+ *static_cast<HWComposer::EventHandler *>(this));
+
+ // get a RenderEngine for the given display / config (can't fail)
+ mRenderEngine = RenderEngine::create(mEGLDisplay, mHwc->getVisualID());
+
+ // retrieve the EGL context that was selected/created
+ mEGLContext = mRenderEngine->getEGLContext();
+
+ LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT,
+ "couldn't create EGLContext");
+
+ // initialize our non-virtual displays
+ for (size_t i=0 ; i<DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES ; i++) {
+ DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i);
+ // set-up the displays that are already connected
+ if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) {
+ // All non-virtual displays are currently considered secure.
+ bool isSecure = true;
+ createBuiltinDisplayLocked(type);
+ wp<IBinder> token = mBuiltinDisplays[i];
+
+ sp<IGraphicBufferProducer> producer;
+ sp<IGraphicBufferConsumer> consumer;
+ BufferQueue::createBufferQueue(&producer, &consumer,
+ new GraphicBufferAlloc());
+
+ sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc, i,
+ consumer);
+ int32_t hwcId = allocateHwcDisplayId(type);
+ sp<DisplayDevice> hw = new DisplayDevice(this,
+ type, hwcId, mHwc->getFormat(hwcId), isSecure, token,
+ fbs, producer,
+ mRenderEngine->getEGLConfig());
+ 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 %zu as acquired/unblanked", i);
+ hw->setPowerMode(HWC_POWER_MODE_NORMAL);
+ }
+ mDisplays.add(token, hw);
+ }
+ }
+
+ // make the GLContext current so that we can create textures when creating Layers
+ // (which may happens before we render something)
+ getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext);
+
+ mEventControlThread = new EventControlThread(this);
+ mEventControlThread->run("EventControl", PRIORITY_URGENT_DISPLAY);
+
+ // set a fake vsync period if there is no HWComposer
+ if (mHwc->initCheck() != NO_ERROR) {
+ mPrimaryDispSync.setPeriod(16666667);
+ }
+
+ // initialize our drawing state
+ mDrawingState = mCurrentState;
+
+ // set initial conditions (e.g. unblank default device)
+ initializeDisplays();
+
+ mRenderEngine->primeCache();
+
+ // start boot animation
+ startBootAnim();
+}
+
+int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) {
+ return (uint32_t(type) < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) ?
+ type : mHwc->allocateDisplayId();
+}
+
+void SurfaceFlinger::startBootAnim() {
+ // start boot animation
+ property_set("service.bootanim.exit", "0");
+ property_set("ctl.start", "bootanim");
+}
+
+size_t SurfaceFlinger::getMaxTextureSize() const {
+ return mRenderEngine->getMaxTextureSize();
+}
+
+size_t SurfaceFlinger::getMaxViewportDims() const {
+ return mRenderEngine->getMaxViewportDims();
+}
+
+// ----------------------------------------------------------------------------
+
+bool SurfaceFlinger::authenticateSurfaceTexture(
+ const sp<IGraphicBufferProducer>& bufferProducer) const {
+ Mutex::Autolock _l(mStateLock);
+ sp<IBinder> surfaceTextureBinder(IInterface::asBinder(bufferProducer));
+ return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0;
+}
+
+status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& display,
+ Vector<DisplayInfo>* configs) {
+ if ((configs == NULL) || (display.get() == NULL)) {
+ return BAD_VALUE;
+ }
+
+ int32_t type = getDisplayType(display);
+ if (type < 0) return type;
+
+ // TODO: Not sure if display density should handled by SF any longer
+ class Density {
+ static int getDensityFromProperty(char const* propName) {
+ char property[PROPERTY_VALUE_MAX];
+ int density = 0;
+ if (property_get(propName, property, NULL) > 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"); }
+ };
+
+ configs->clear();
+
+ const Vector<HWComposer::DisplayConfig>& hwConfigs =
+ getHwComposer().getConfigs(type);
+ for (size_t c = 0; c < hwConfigs.size(); ++c) {
+ const HWComposer::DisplayConfig& hwConfig = hwConfigs[c];
+ DisplayInfo info = DisplayInfo();
+
+ float xdpi = hwConfig.xdpi;
+ float ydpi = hwConfig.ydpi;
+
+ 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<const DisplayDevice> hw(getDefaultDisplayDevice());
+ info.orientation = hw->getOrientation();
+ } 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 = hwConfig.width;
+ info.h = hwConfig.height;
+ info.xdpi = xdpi;
+ info.ydpi = ydpi;
+ info.fps = float(1e9 / hwConfig.refresh);
+ info.appVsyncOffset = VSYNC_EVENT_PHASE_OFFSET_NS;
+
+ // This is how far in advance a buffer must be queued for
+ // presentation at a given time. If you want a buffer to appear
+ // on the screen at time N, you must submit the buffer before
+ // (N - presentationDeadline).
+ //
+ // Normally it's one full refresh period (to give SF a chance to
+ // latch the buffer), but this can be reduced by configuring a
+ // DispSync offset. Any additional delays introduced by the hardware
+ // composer or panel must be accounted for here.
+ //
+ // We add an additional 1ms to allow for processing time and
+ // differences between the ideal and actual refresh rate.
+ info.presentationDeadline =
+ hwConfig.refresh - SF_VSYNC_EVENT_PHASE_OFFSET_NS + 1000000;
+
+ // All non-virtual displays are currently considered secure.
+ info.secure = true;
+
+ configs->push_back(info);
+ }
+
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::getDisplayStats(const sp<IBinder>& /* display */,
+ DisplayStatInfo* stats) {
+ if (stats == NULL) {
+ return BAD_VALUE;
+ }
+
+ // FIXME for now we always return stats for the primary display
+ memset(stats, 0, sizeof(*stats));
+ stats->vsyncTime = mPrimaryDispSync.computeNextRefresh(0);
+ stats->vsyncPeriod = mPrimaryDispSync.getPeriod();
+ return NO_ERROR;
+}
+
+int SurfaceFlinger::getActiveConfig(const sp<IBinder>& display) {
+ sp<DisplayDevice> device(getDisplayDevice(display));
+ if (device != NULL) {
+ return device->getActiveConfig();
+ }
+ return BAD_VALUE;
+}
+
+void SurfaceFlinger::setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode) {
+ ALOGD("Set active config mode=%d, type=%d flinger=%p", mode, hw->getDisplayType(),
+ this);
+ int32_t type = hw->getDisplayType();
+ int currentMode = hw->getActiveConfig();
+
+ if (mode == currentMode) {
+ ALOGD("Screen type=%d is already mode=%d", hw->getDisplayType(), mode);
+ return;
+ }
+
+ if (type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) {
+ ALOGW("Trying to set config for virtual display");
+ return;
+ }
+
+ hw->setActiveConfig(mode);
+ getHwComposer().setActiveConfig(type, mode);
+}
+
+status_t SurfaceFlinger::setActiveConfig(const sp<IBinder>& display, int mode) {
+ class MessageSetActiveConfig: public MessageBase {
+ SurfaceFlinger& mFlinger;
+ sp<IBinder> mDisplay;
+ int mMode;
+ public:
+ MessageSetActiveConfig(SurfaceFlinger& flinger, const sp<IBinder>& disp,
+ int mode) :
+ mFlinger(flinger), mDisplay(disp) { mMode = mode; }
+ virtual bool handler() {
+ Vector<DisplayInfo> configs;
+ mFlinger.getDisplayConfigs(mDisplay, &configs);
+ if (mMode < 0 || mMode >= static_cast<int>(configs.size())) {
+ ALOGE("Attempt to set active config = %d for display with %zu configs",
+ mMode, configs.size());
+ }
+ sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay));
+ if (hw == NULL) {
+ ALOGE("Attempt to set active config = %d for null display %p",
+ mMode, mDisplay.get());
+ } else if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) {
+ ALOGW("Attempt to set active config = %d for virtual display",
+ mMode);
+ } else {
+ mFlinger.setActiveConfigInternal(hw, mMode);
+ }
+ return true;
+ }
+ };
+ sp<MessageBase> msg = new MessageSetActiveConfig(*this, display, mode);
+ postMessageSync(msg);
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::getDisplayColorModes(const sp<IBinder>& display,
+ Vector<android_color_mode_t>* outColorModes) {
+ if (outColorModes == nullptr || display.get() == nullptr) {
+ return BAD_VALUE;
+ }
+
+ int32_t type = getDisplayType(display);
+ if (type < 0) return type;
+
+ std::set<android_color_mode_t> colorModes;
+ for (const HWComposer::DisplayConfig& hwConfig : getHwComposer().getConfigs(type)) {
+ colorModes.insert(hwConfig.colorMode);
+ }
+
+ outColorModes->clear();
+ std::copy(colorModes.cbegin(), colorModes.cend(), std::back_inserter(*outColorModes));
+
+ return NO_ERROR;
+}
+
+android_color_mode_t SurfaceFlinger::getActiveColorMode(const sp<IBinder>& display) {
+ if (display.get() == nullptr) return static_cast<android_color_mode_t>(BAD_VALUE);
+
+ int32_t type = getDisplayType(display);
+ if (type < 0) return static_cast<android_color_mode_t>(type);
+
+ return getHwComposer().getColorMode(type);
+}
+
+status_t SurfaceFlinger::setActiveColorMode(const sp<IBinder>& display,
+ android_color_mode_t colorMode) {
+ if (display.get() == nullptr || colorMode < 0) {
+ return BAD_VALUE;
+ }
+
+ int32_t type = getDisplayType(display);
+ if (type < 0) return type;
+ const Vector<HWComposer::DisplayConfig>& hwConfigs = getHwComposer().getConfigs(type);
+ HWComposer::DisplayConfig desiredConfig = hwConfigs[getHwComposer().getCurrentConfig(type)];
+ desiredConfig.colorMode = colorMode;
+ for (size_t c = 0; c < hwConfigs.size(); ++c) {
+ const HWComposer::DisplayConfig config = hwConfigs[c];
+ if (config == desiredConfig) {
+ return setActiveConfig(display, c);
+ }
+ }
+ return BAD_VALUE;
+}
+
+status_t SurfaceFlinger::clearAnimationFrameStats() {
+ Mutex::Autolock _l(mStateLock);
+ mAnimFrameTracker.clearStats();
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::getAnimationFrameStats(FrameStats* outStats) const {
+ Mutex::Autolock _l(mStateLock);
+ mAnimFrameTracker.getStats(outStats);
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::getHdrCapabilities(const sp<IBinder>& /*display*/,
+ HdrCapabilities* outCapabilities) const {
+ // HWC1 does not provide HDR capabilities
+ *outCapabilities = HdrCapabilities();
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::enableVSyncInjections(bool enable) {
+ if (enable == mInjectVSyncs) {
+ return NO_ERROR;
+ }
+
+ if (enable) {
+ mInjectVSyncs = enable;
+ ALOGV("VSync Injections enabled");
+ if (mVSyncInjector.get() == nullptr) {
+ mVSyncInjector = new InjectVSyncSource();
+ mInjectorEventThread = new EventThread(mVSyncInjector, *this, false);
+ }
+ mEventQueue.setEventThread(mInjectorEventThread);
+ } else {
+ mInjectVSyncs = enable;
+ ALOGV("VSync Injections disabled");
+ mEventQueue.setEventThread(mSFEventThread);
+ mVSyncInjector.clear();
+ }
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::injectVSync(nsecs_t when) {
+ if (!mInjectVSyncs) {
+ ALOGE("VSync Injections not enabled");
+ return BAD_VALUE;
+ }
+ if (mInjectVSyncs && mInjectorEventThread.get() != nullptr) {
+ ALOGV("Injecting VSync inside SurfaceFlinger");
+ mVSyncInjector->onInjectSyncEvent(when);
+ }
+ return NO_ERROR;
+}
+
+// ----------------------------------------------------------------------------
+
+sp<IDisplayEventConnection> 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<MessageBase>& msg,
+ nsecs_t reltime, uint32_t /* flags */) {
+ return mEventQueue.postMessage(msg, reltime);
+}
+
+status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
+ nsecs_t reltime, uint32_t /* flags */) {
+ status_t res = mEventQueue.postMessage(msg, reltime);
+ if (res == NO_ERROR) {
+ msg->wait();
+ }
+ return res;
+}
+
+void SurfaceFlinger::run() {
+ do {
+ waitForEvent();
+ } while (true);
+}
+
+void SurfaceFlinger::enableHardwareVsync() {
+ Mutex::Autolock _l(mHWVsyncLock);
+ if (!mPrimaryHWVsyncEnabled && mHWVsyncAvailable) {
+ mPrimaryDispSync.beginResync();
+ //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, true);
+ mEventControlThread->setVsyncEnabled(true);
+ mPrimaryHWVsyncEnabled = true;
+ }
+}
+
+void SurfaceFlinger::resyncToHardwareVsync(bool makeAvailable) {
+ Mutex::Autolock _l(mHWVsyncLock);
+
+ if (makeAvailable) {
+ mHWVsyncAvailable = true;
+ } else if (!mHWVsyncAvailable) {
+ // Hardware vsync is not currently available, so abort the resync
+ // attempt for now
+ return;
+ }
+
+ const nsecs_t period =
+ getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY);
+
+ mPrimaryDispSync.reset();
+ mPrimaryDispSync.setPeriod(period);
+
+ if (!mPrimaryHWVsyncEnabled) {
+ mPrimaryDispSync.beginResync();
+ //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, true);
+ mEventControlThread->setVsyncEnabled(true);
+ mPrimaryHWVsyncEnabled = true;
+ }
+}
+
+void SurfaceFlinger::disableHardwareVsync(bool makeUnavailable) {
+ Mutex::Autolock _l(mHWVsyncLock);
+ if (mPrimaryHWVsyncEnabled) {
+ //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, false);
+ mEventControlThread->setVsyncEnabled(false);
+ mPrimaryDispSync.endResync();
+ mPrimaryHWVsyncEnabled = false;
+ }
+ if (makeUnavailable) {
+ mHWVsyncAvailable = false;
+ }
+}
+
+void SurfaceFlinger::resyncWithRateLimit() {
+ static constexpr nsecs_t kIgnoreDelay = ms2ns(500);
+ if (systemTime() - mLastSwapTime > kIgnoreDelay) {
+ resyncToHardwareVsync(false);
+ }
+}
+
+void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) {
+ bool needsHwVsync = false;
+
+ { // Scope for the lock
+ Mutex::Autolock _l(mHWVsyncLock);
+ if (type == 0 && mPrimaryHWVsyncEnabled) {
+ needsHwVsync = mPrimaryDispSync.addResyncSample(timestamp);
+ }
+ }
+
+ if (needsHwVsync) {
+ enableHardwareVsync();
+ } else {
+ disableHardwareVsync(false);
+ }
+}
+
+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_BUILTIN_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) {
+ ATRACE_CALL();
+ getHwComposer().eventControl(disp, event, enabled);
+}
+
+void SurfaceFlinger::onMessageReceived(int32_t what) {
+ ATRACE_CALL();
+ switch (what) {
+ case MessageQueue::INVALIDATE: {
+ bool refreshNeeded = handleMessageTransaction();
+ refreshNeeded |= handleMessageInvalidate();
+ refreshNeeded |= mRepaintEverything;
+ if (refreshNeeded) {
+ // Signal a refresh if a transaction modified the window state,
+ // a new buffer was latched, or if HWC has requested a full
+ // repaint
+ signalRefresh();
+ }
+ break;
+ }
+ case MessageQueue::REFRESH: {
+ handleMessageRefresh();
+ break;
+ }
+ }
+}
+
+bool SurfaceFlinger::handleMessageTransaction() {
+ uint32_t transactionFlags = peekTransactionFlags(eTransactionMask);
+ if (transactionFlags) {
+ handleTransaction(transactionFlags);
+ return true;
+ }
+ return false;
+}
+
+bool SurfaceFlinger::handleMessageInvalidate() {
+ ATRACE_CALL();
+ return handlePageFlip();
+}
+
+void SurfaceFlinger::handleMessageRefresh() {
+ ATRACE_CALL();
+
+ nsecs_t refreshStartTime = systemTime(SYSTEM_TIME_MONOTONIC);
+
+ preComposition();
+ rebuildLayerStacks();
+ setUpHWComposer();
+ doDebugFlashRegions();
+ doComposition();
+ postComposition(refreshStartTime);
+}
+
+void SurfaceFlinger::doDebugFlashRegions()
+{
+ // is debugging enabled
+ if (CC_LIKELY(!mDebugRegion))
+ return;
+
+ const bool repaintEverything = mRepaintEverything;
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ const sp<DisplayDevice>& hw(mDisplays[dpy]);
+ if (hw->isDisplayOn()) {
+ // 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
+ const int32_t height = hw->getHeight();
+ RenderEngine& engine(getRenderEngine());
+ engine.fillRegionWithColor(dirtyRegion, height, 1, 0, 1, 1);
+
+ 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& layers(mDrawingState.layersSortedByZ);
+ const size_t count = layers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ if (layers[i]->onPreComposition()) {
+ needExtraInvalidate = true;
+ }
+ }
+ if (needExtraInvalidate) {
+ signalLayerUpdate();
+ }
+}
+
+void SurfaceFlinger::postComposition(nsecs_t refreshStartTime)
+{
+ const LayerVector& layers(mDrawingState.layersSortedByZ);
+ const size_t count = layers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ bool frameLatched = layers[i]->onPostComposition();
+ if (frameLatched) {
+ recordBufferingStats(layers[i]->getName().string(),
+ layers[i]->getOccupancyHistory(false));
+ }
+ }
+
+ const HWComposer& hwc = getHwComposer();
+ sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY);
+
+ if (presentFence->isValid()) {
+ if (mPrimaryDispSync.addPresentFence(presentFence)) {
+ enableHardwareVsync();
+ } else {
+ disableHardwareVsync(false);
+ }
+ }
+
+ const sp<const DisplayDevice> hw(getDefaultDisplayDevice());
+ if (kIgnorePresentFences) {
+ if (hw->isDisplayOn()) {
+ enableHardwareVsync();
+ }
+ }
+
+ mFenceTracker.addFrame(refreshStartTime, presentFence,
+ hw->getVisibleLayersSortedByZ(), hw->getClientTargetAcquireFence());
+
+ if (mAnimCompositionPending) {
+ mAnimCompositionPending = false;
+
+ 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();
+ }
+
+ if (hw->getPowerMode() == HWC_POWER_MODE_OFF) {
+ return;
+ }
+
+ nsecs_t currentTime = systemTime();
+ if (mHasPoweredOff) {
+ mHasPoweredOff = false;
+ } else {
+ nsecs_t period = mPrimaryDispSync.getPeriod();
+ nsecs_t elapsedTime = currentTime - mLastSwapTime;
+ size_t numPeriods = static_cast<size_t>(elapsedTime / period);
+ if (numPeriods < NUM_BUCKETS - 1) {
+ mFrameBuckets[numPeriods] += elapsedTime;
+ } else {
+ mFrameBuckets[NUM_BUCKETS - 1] += elapsedTime;
+ }
+ mTotalTime += elapsedTime;
+ }
+ mLastSwapTime = currentTime;
+}
+
+void SurfaceFlinger::rebuildLayerStacks() {
+ // rebuild the visible layer list per screen
+ if (CC_UNLIKELY(mVisibleRegionsDirty)) {
+ ATRACE_CALL();
+ mVisibleRegionsDirty = false;
+ invalidateHwcGeometry();
+
+ const LayerVector& layers(mDrawingState.layersSortedByZ);
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ Region opaqueRegion;
+ Region dirtyRegion;
+ Vector< sp<Layer> > layersSortedByZ;
+ const sp<DisplayDevice>& hw(mDisplays[dpy]);
+ const Transform& tr(hw->getTransform());
+ const Rect bounds(hw->getBounds());
+ if (hw->isDisplayOn()) {
+ SurfaceFlinger::computeVisibleRegions(layers,
+ hw->getLayerStack(), dirtyRegion, opaqueRegion);
+
+ const size_t count = layers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<Layer>& layer(layers[i]);
+ const Layer::State& s(layer->getDrawingState());
+ 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() {
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ bool dirty = !mDisplays[dpy]->getDirtyRegion(false).isEmpty();
+ bool empty = mDisplays[dpy]->getVisibleLayersSortedByZ().size() == 0;
+ bool wasEmpty = !mDisplays[dpy]->lastCompositionHadVisibleLayers;
+
+ // If nothing has changed (!dirty), don't recompose.
+ // If something changed, but we don't currently have any visible layers,
+ // and didn't when we last did a composition, then skip it this time.
+ // The second rule does two things:
+ // - When all layers are removed from a display, we'll emit one black
+ // frame, then nothing more until we get new layers.
+ // - When a display is created with a private layer stack, we won't
+ // emit any black frames until a layer is added to the layer stack.
+ bool mustRecompose = dirty && !(empty && wasEmpty);
+
+ ALOGV_IF(mDisplays[dpy]->getDisplayType() == DisplayDevice::DISPLAY_VIRTUAL,
+ "dpy[%zu]: %s composition (%sdirty %sempty %swasEmpty)", dpy,
+ mustRecompose ? "doing" : "skipping",
+ dirty ? "+" : "-",
+ empty ? "+" : "-",
+ wasEmpty ? "+" : "-");
+
+ mDisplays[dpy]->beginFrame(mustRecompose);
+
+ if (mustRecompose) {
+ mDisplays[dpy]->lastCompositionHadVisibleLayers = !empty;
+ }
+ }
+
+ 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<mDisplays.size() ; dpy++) {
+ sp<const DisplayDevice> hw(mDisplays[dpy]);
+ const int32_t id = hw->getHwcDisplayId();
+ if (id >= 0) {
+ const Vector< sp<Layer> >& 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<count ; ++i, ++cur) {
+ const sp<Layer>& layer(currentLayers[i]);
+ layer->setGeometry(hw, *cur);
+ if (mDebugDisableHWC || mDebugRegion || mDaltonize || mHasColorMatrix) {
+ cur->setSkip(true);
+ }
+ }
+ }
+ }
+ }
+ }
+
+ // set the per-frame data
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ sp<const DisplayDevice> hw(mDisplays[dpy]);
+ const int32_t id = hw->getHwcDisplayId();
+ if (id >= 0) {
+ const Vector< sp<Layer> >& 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<count ; ++i, ++cur) {
+ /*
+ * update the per-frame h/w composer data for each layer
+ * and build the transparent region of the FB
+ */
+ const sp<Layer>& layer(currentLayers[i]);
+ layer->setPerFrameData(hw, *cur);
+ }
+ }
+ }
+
+ // If possible, attempt to use the cursor overlay on each display.
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ sp<const DisplayDevice> hw(mDisplays[dpy]);
+ const int32_t id = hw->getHwcDisplayId();
+ if (id >= 0) {
+ const Vector< sp<Layer> >& 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<count ; ++i, ++cur) {
+ const sp<Layer>& layer(currentLayers[i]);
+ if (layer->isPotentialCursor()) {
+ cur->setIsCursorLayerHint();
+ break;
+ }
+ }
+ }
+ }
+
+ status_t err = hwc.prepare();
+ ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
+
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ sp<const DisplayDevice> hw(mDisplays[dpy]);
+ hw->prepareFrame(hwc);
+ }
+ }
+}
+
+void SurfaceFlinger::doComposition() {
+ ATRACE_CALL();
+ const bool repaintEverything = android_atomic_and(0, &mRepaintEverything);
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ const sp<DisplayDevice>& hw(mDisplays[dpy]);
+ if (hw->isDisplayOn()) {
+ // 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."
+ getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext);
+ }
+ hwc.commit();
+ }
+
+ // make the default display current because the VirtualDisplayDevice code cannot
+ // deal with dequeueBuffer() being called outside of the composition loop; however
+ // the code below can call glFlush() which is allowed (and does in some case) call
+ // dequeueBuffer().
+ getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext);
+
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ sp<const DisplayDevice> hw(mDisplays[dpy]);
+ const Vector< sp<Layer> >& 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;
+
+ uint32_t flipCount = getDefaultDisplayDevice()->getPageFlipCount();
+ if (flipCount % LOG_FRAME_STATS_PERIOD == 0) {
+ logFrameStats();
+ }
+}
+
+void SurfaceFlinger::handleTransaction(uint32_t transactionFlags)
+{
+ ATRACE_CALL();
+
+ // here we keep a copy of the drawing state (that is the state that's
+ // going to be overwritten by handleTransactionLocked()) outside of
+ // mStateLock so that the side-effects of the State assignment
+ // don't happen with mStateLock held (which can cause deadlocks).
+ State drawingState(mDrawingState);
+
+ 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();
+
+ // Notify all layers of available frames
+ for (size_t i = 0; i < count; ++i) {
+ currentLayers[i]->notifyAvailableFrames();
+ }
+
+ /*
+ * Traversal of the children
+ * (perform the transaction for each of them if needed)
+ */
+
+ if (transactionFlags & eTraversalNeeded) {
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<Layer>& 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<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays);
+ const KeyedVector< wp<IBinder>, 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<dc ; i++) {
+ const ssize_t j = curr.indexOfKey(draw.keyAt(i));
+ if (j < 0) {
+ // in drawing state but not in current state
+ if (!draw[i].isMainDisplay()) {
+ // Call makeCurrent() on the primary display so we can
+ // be sure that nothing associated with this display
+ // is current.
+ const sp<const DisplayDevice> defaultDisplay(getDefaultDisplayDevice());
+ defaultDisplay->makeCurrent(mEGLDisplay, mEGLContext);
+ sp<DisplayDevice> hw(getDisplayDevice(draw.keyAt(i)));
+ if (hw != NULL)
+ hw->disconnect(getHwComposer());
+ if (draw[i].type < DisplayDevice::NUM_BUILTIN_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<IBinder>& display(curr.keyAt(j));
+ const sp<IBinder> state_binder = IInterface::asBinder(state.surface);
+ const sp<IBinder> draw_binder = IInterface::asBinder(draw[i].surface);
+ if (state_binder != draw_binder) {
+ // 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<DisplayDevice> 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<DisplayDevice> 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);
+ }
+ if (state.width != draw[i].width || state.height != draw[i].height) {
+ disp->setDisplaySize(state.width, state.height);
+ }
+ }
+ }
+ }
+
+ // find displays that were added
+ // (ie: in current state but not in drawing state)
+ for (size_t i=0 ; i<cc ; i++) {
+ if (draw.indexOfKey(curr.keyAt(i)) < 0) {
+ const DisplayDeviceState& state(curr[i]);
+
+ sp<DisplaySurface> dispSurface;
+ sp<IGraphicBufferProducer> producer;
+ sp<IGraphicBufferProducer> bqProducer;
+ sp<IGraphicBufferConsumer> bqConsumer;
+ BufferQueue::createBufferQueue(&bqProducer, &bqConsumer,
+ new GraphicBufferAlloc());
+
+ 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) {
+
+ int width = 0;
+ int status = state.surface->query(
+ NATIVE_WINDOW_WIDTH, &width);
+ ALOGE_IF(status != NO_ERROR,
+ "Unable to query width (%d)", status);
+ int height = 0;
+ status = state.surface->query(
+ NATIVE_WINDOW_HEIGHT, &height);
+ ALOGE_IF(status != NO_ERROR,
+ "Unable to query height (%d)", status);
+ if (mUseHwcVirtualDisplays &&
+ (MAX_VIRTUAL_DISPLAY_DIMENSION == 0 ||
+ (width <= MAX_VIRTUAL_DISPLAY_DIMENSION &&
+ height <= MAX_VIRTUAL_DISPLAY_DIMENSION))) {
+ hwcDisplayId = allocateHwcDisplayId(state.type);
+ }
+
+ sp<VirtualDisplaySurface> vds = new VirtualDisplaySurface(
+ *mHwc, hwcDisplayId, state.surface,
+ bqProducer, bqConsumer, state.displayName);
+
+ dispSurface = vds;
+ producer = vds;
+ }
+ } 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,
+ bqConsumer);
+ producer = bqProducer;
+ }
+
+ const wp<IBinder>& display(curr.keyAt(i));
+ if (dispSurface != NULL) {
+ sp<DisplayDevice> hw = new DisplayDevice(this,
+ state.type, hwcDisplayId,
+ mHwc->getFormat(hwcDisplayId), state.isSecure,
+ display, dispSurface, producer,
+ mRenderEngine->getEGLConfig());
+ 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<const DisplayDevice> disp;
+ uint32_t currentlayerStack = 0;
+ for (size_t i=0; i<count; i++) {
+ // NOTE: we rely on the fact that layers are sorted by
+ // layerStack first (so we don't have to traverse the list
+ // of displays for every layer).
+ const sp<Layer>& layer(currentLayers[i]);
+ uint32_t layerStack = layer->getDrawingState().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<mDisplays.size() ; dpy++) {
+ sp<const DisplayDevice> 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& layers(mDrawingState.layersSortedByZ);
+ if (currentLayers.size() > layers.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 = layers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<Layer>& layer(layers[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->getDrawingState());
+ Region visibleReg = s.active.transform.transform(
+ Region(Rect(s.active.w, s.active.h)));
+ invalidateLayerStack(s.layerStack, visibleReg);
+ }
+ }
+ }
+
+ commitTransaction();
+
+ updateCursorAsync();
+}
+
+void SurfaceFlinger::updateCursorAsync()
+{
+ HWComposer& hwc(getHwComposer());
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ sp<const DisplayDevice> hw(mDisplays[dpy]);
+ const int32_t id = hw->getHwcDisplayId();
+ if (id < 0) {
+ continue;
+ }
+ const Vector< sp<Layer> >& 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<count ; ++i, ++cur) {
+ if (cur->getCompositionType() != HWC_CURSOR_OVERLAY) {
+ continue;
+ }
+ const sp<Layer>& layer(currentLayers[i]);
+ Rect cursorPos = layer->getPosition(hw);
+ hwc.setCursorPositionAsync(id, cursorPos);
+ break;
+ }
+ }
+}
+
+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++) {
+ recordBufferingStats(mLayersPendingRemoval[i]->getName().string(),
+ mLayersPendingRemoval[i]->getOccupancyHistory(true));
+ 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>& layer = currentLayers[i];
+
+ // start with the whole surface at its current location
+ const Layer::State& s(layer->getDrawingState());
+
+ // 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(s);
+ Rect bounds(s.active.transform.transform(layer->computeBounds()));
+ visibleRegion.set(bounds);
+ if (!visibleRegion.isEmpty()) {
+ // Remove the transparent area from the visible region
+ if (translucent) {
+ const Transform tr(s.active.transform);
+ 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();
+ }
+ }
+
+ // compute the opaque region
+ const int32_t layerOrientation = s.active.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<mDisplays.size() ; dpy++) {
+ const sp<DisplayDevice>& hw(mDisplays[dpy]);
+ if (hw->getLayerStack() == layerStack) {
+ hw->dirtyRegion.orSelf(dirty);
+ }
+ }
+}
+
+bool SurfaceFlinger::handlePageFlip()
+{
+ Region dirtyRegion;
+
+ bool visibleRegions = false;
+ const LayerVector& layers(mDrawingState.layersSortedByZ);
+ bool frameQueued = false;
+
+ // Store the set of layers that need updates. This set must not change as
+ // buffers are being latched, as this could result in a deadlock.
+ // Example: Two producers share the same command stream and:
+ // 1.) Layer 0 is latched
+ // 2.) Layer 0 gets a new frame
+ // 2.) Layer 1 gets a new frame
+ // 3.) Layer 1 is latched.
+ // Display is now waiting on Layer 1's frame, which is behind layer 0's
+ // second frame. But layer 0's second frame could be waiting on display.
+ Vector<Layer*> layersWithQueuedFrames;
+ for (size_t i = 0, count = layers.size(); i<count ; i++) {
+ const sp<Layer>& layer(layers[i]);
+ if (layer->hasQueuedFrame()) {
+ frameQueued = true;
+ if (layer->shouldPresentNow(mPrimaryDispSync)) {
+ layersWithQueuedFrames.push_back(layer.get());
+ } else {
+ layer->useEmptyDamage();
+ }
+ } else {
+ layer->useEmptyDamage();
+ }
+ }
+ for (size_t i = 0, count = layersWithQueuedFrames.size() ; i<count ; i++) {
+ Layer* layer = layersWithQueuedFrames[i];
+ const Region dirty(layer->latchBuffer(visibleRegions));
+ layer->useSurfaceDamage();
+ const Layer::State& s(layer->getDrawingState());
+ invalidateLayerStack(s.layerStack, dirty);
+ }
+
+ mVisibleRegionsDirty |= visibleRegions;
+
+ // If we will need to wake up at some time in the future to deal with a
+ // queued frame that shouldn't be displayed during this vsync period, wake
+ // up during the next vsync period to check again.
+ if (frameQueued && layersWithQueuedFrames.empty()) {
+ signalLayerUpdate();
+ }
+
+ // Only continue with the refresh if there is actually new work to do
+ return !layersWithQueuedFrames.empty();
+}
+
+void SurfaceFlinger::invalidateHwcGeometry()
+{
+ mHwWorkListDirty = true;
+}
+
+
+void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw,
+ const Region& inDirtyRegion)
+{
+ // We only need to actually compose the display if:
+ // 1) It is being handled by hardware composer, which may need this to
+ // keep its virtual display state machine in sync, or
+ // 2) There is work to be done (the dirty region isn't empty)
+ bool isHwcDisplay = hw->getHwcDisplayId() >= 0;
+ if (!isHwcDisplay && inDirtyRegion.isEmpty()) {
+ return;
+ }
+
+ 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;
+ }
+ }
+
+ if (CC_LIKELY(!mDaltonize && !mHasColorMatrix)) {
+ if (!doComposeSurfaces(hw, dirtyRegion)) return;
+ } else {
+ RenderEngine& engine(getRenderEngine());
+ mat4 colorMatrix = mColorMatrix;
+ if (mDaltonize) {
+ colorMatrix = colorMatrix * mDaltonizer();
+ }
+ mat4 oldMatrix = engine.setupColorTransform(colorMatrix);
+ doComposeSurfaces(hw, dirtyRegion);
+ engine.setupColorTransform(oldMatrix);
+ }
+
+ // update the swap region and clear the dirty region
+ hw->swapRegion.orSelf(dirtyRegion);
+
+ // swap buffers (presentation)
+ hw->swapBuffers(getHwComposer());
+}
+
+bool SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty)
+{
+ RenderEngine& engine(getRenderEngine());
+ const int32_t id = hw->getHwcDisplayId();
+ HWComposer& hwc(getHwComposer());
+ HWComposer::LayerListIterator cur = hwc.begin(id);
+ const HWComposer::LayerListIterator end = hwc.end(id);
+
+ bool hasGlesComposition = hwc.hasGlesComposition(id);
+ if (hasGlesComposition) {
+ if (!hw->makeCurrent(mEGLDisplay, mEGLContext)) {
+ ALOGW("DisplayDevice::makeCurrent failed. Aborting surface composition for display %s",
+ hw->getDisplayName().string());
+ eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+ if(!getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext)) {
+ ALOGE("DisplayDevice::makeCurrent on default display failed. Aborting.");
+ }
+ return false;
+ }
+
+ // 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" clear might be more efficient.
+ // We'll revisit later if needed.
+ engine.clearWithColor(0, 0, 0, 0);
+ } 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
+
+ // enable scissor for this frame
+ const uint32_t height = hw->getHeight();
+ engine.setScissor(scissor.left, height - scissor.bottom,
+ scissor.getWidth(), scissor.getHeight());
+ }
+ }
+ }
+
+ /*
+ * and then, render the layers targeted at the framebuffer
+ */
+
+ const Vector< sp<Layer> >& 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<count && cur!=end ; ++i, ++cur) {
+ const sp<Layer>& layer(layers[i]);
+ const Region clip(dirty.intersect(tr.transform(layer->visibleRegion)));
+ if (!clip.isEmpty()) {
+ switch (cur->getCompositionType()) {
+ case HWC_CURSOR_OVERLAY:
+ case HWC_OVERLAY: {
+ const Layer::State& state(layer->getDrawingState());
+ if ((cur->getHints() & HWC_HINT_CLEAR_FB)
+ && i
+ && layer->isOpaque(state) && (state.alpha == 0xFF)
+ && 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=%zu)", i);
+ break;
+ }
+ }
+ }
+ layer->setAcquireFence(hw, *cur);
+ }
+ } else {
+ // we're not using h/w composer
+ for (size_t i=0 ; i<count ; ++i) {
+ const sp<Layer>& 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
+ engine.disableScissor();
+ return true;
+}
+
+void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, const Region& region) const {
+ const int32_t height = hw->getHeight();
+ RenderEngine& engine(getRenderEngine());
+ engine.fillRegionWithColor(region, height, 0, 0, 0, 0);
+}
+
+status_t SurfaceFlinger::addClientLayer(const sp<Client>& client,
+ const sp<IBinder>& handle,
+ const sp<IGraphicBufferProducer>& gbc,
+ const sp<Layer>& lbc)
+{
+ // add this layer to the current state list
+ {
+ Mutex::Autolock _l(mStateLock);
+ if (mCurrentState.layersSortedByZ.size() >= MAX_LAYERS) {
+ return NO_MEMORY;
+ }
+ mCurrentState.layersSortedByZ.add(lbc);
+ mGraphicBufferProducerList.add(IInterface::asBinder(gbc));
+ }
+
+ // attach this layer to the client
+ client->attachLayer(handle, lbc);
+
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::removeLayer(const wp<Layer>& weakLayer) {
+ Mutex::Autolock _l(mStateLock);
+ sp<Layer> layer = weakLayer.promote();
+ if (layer == nullptr) {
+ // The layer has already been removed, carry on
+ return NO_ERROR;
+ }
+
+ 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<ComposerState>& state,
+ const Vector<DisplayState>& 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<count ; i++) {
+ const DisplayState& s(displays[i]);
+ transactionFlags |= setDisplayStateLocked(s);
+ }
+
+ count = state.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const ComposerState& s(state[i]);
+ // Here we need to check that the interface we're given is indeed
+ // one of our own. A malicious client could give us a NULL
+ // IInterface, or one of its own or even one of our own but a
+ // different type. All these situations would cause us to crash.
+ //
+ // NOTE: it would be better to use RTTI as we could directly check
+ // that we have a Client*. however, RTTI is disabled in Android.
+ if (s.client != NULL) {
+ sp<IBinder> binder = IInterface::asBinder(s.client);
+ if (binder != NULL) {
+ String16 desc(binder->getInterfaceDescriptor());
+ if (desc == ISurfaceComposerClient::descriptor) {
+ sp<Client> client( static_cast<Client *>(s.client.get()) );
+ transactionFlags |= setClientStateLocked(client, s.state);
+ }
+ }
+ }
+ }
+
+ // If a synchronous transaction is explicitly requested without any changes,
+ // force a transaction anyway. This can be used as a flush mechanism for
+ // previous async transactions.
+ if (transactionFlags == 0 && (flags & eSynchronous)) {
+ transactionFlags = eTransactionNeeded;
+ }
+
+ if (transactionFlags) {
+ if (mInterceptor.isEnabled()) {
+ mInterceptor.saveTransaction(state, mCurrentState.displays, displays, flags);
+ }
+
+ // 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 (IInterface::asBinder(disp.surface) != IInterface::asBinder(s.surface)) {
+ 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;
+ }
+ }
+ if (what & DisplayState::eDisplaySizeChanged) {
+ if (disp.width != s.width) {
+ disp.width = s.width;
+ flags |= eDisplayTransactionNeeded;
+ }
+ if (disp.height != s.height) {
+ disp.height = s.height;
+ flags |= eDisplayTransactionNeeded;
+ }
+ }
+ }
+ return flags;
+}
+
+uint32_t SurfaceFlinger::setClientStateLocked(
+ const sp<Client>& client,
+ const layer_state_t& s)
+{
+ uint32_t flags = 0;
+ sp<Layer> layer(client->getLayerUser(s.surface));
+ if (layer != 0) {
+ const uint32_t what = s.what;
+ bool geometryAppliesWithResize =
+ what & layer_state_t::eGeometryAppliesWithResize;
+ if (what & layer_state_t::ePositionChanged) {
+ if (layer->setPosition(s.x, s.y, !geometryAppliesWithResize)) {
+ 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) && idx >= 0) {
+ 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::eFlagsChanged) {
+ if (layer->setFlags(s.flags, s.mask))
+ flags |= eTraversalNeeded;
+ }
+ if (what & layer_state_t::eCropChanged) {
+ if (layer->setCrop(s.crop, !geometryAppliesWithResize))
+ flags |= eTraversalNeeded;
+ }
+ if (what & layer_state_t::eFinalCropChanged) {
+ if (layer->setFinalCrop(s.finalCrop))
+ 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) && idx >= 0) {
+ 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::eDeferTransaction) {
+ layer->deferTransactionUntil(s.handle, s.frameNumber);
+ // We don't trigger a traversal here because if no other state is
+ // changed, we don't want this to cause any more work
+ }
+ if (what & layer_state_t::eOverrideScalingModeChanged) {
+ layer->setOverrideScalingMode(s.overrideScalingMode);
+ // We don't trigger a traversal here because if no other state is
+ // changed, we don't want this to cause any more work
+ }
+ }
+ return flags;
+}
+
+status_t SurfaceFlinger::createLayer(
+ const String8& name,
+ const sp<Client>& client,
+ uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
+ sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp)
+{
+ 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> 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) {
+ return result;
+ }
+
+ result = addClientLayer(client, *handle, *gbp, layer);
+ if (result != NO_ERROR) {
+ return result;
+ }
+ mInterceptor.saveSurfaceCreation(layer);
+
+ setTransactionFlags(eTransactionNeeded);
+ return result;
+}
+
+status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client,
+ const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
+ sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer)
+{
+ // initialize the surfaces
+ switch (format) {
+ case PIXEL_FORMAT_TRANSPARENT:
+ case PIXEL_FORMAT_TRANSLUCENT:
+ format = PIXEL_FORMAT_RGBA_8888;
+ break;
+ case PIXEL_FORMAT_OPAQUE:
+ format = PIXEL_FORMAT_RGBX_8888;
+ break;
+ }
+
+ *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)->getProducer();
+ }
+
+ ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err));
+ return err;
+}
+
+status_t SurfaceFlinger::createDimLayer(const sp<Client>& client,
+ const String8& name, uint32_t w, uint32_t h, uint32_t flags,
+ sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer)
+{
+ *outLayer = new LayerDim(this, client, name, w, h, flags);
+ *handle = (*outLayer)->getHandle();
+ *gbp = (*outLayer)->getProducer();
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle)
+{
+ // called by the window manager when it wants to remove a Layer
+ status_t err = NO_ERROR;
+ sp<Layer> l(client->getLayerUser(handle));
+ if (l != NULL) {
+ mInterceptor.saveSurfaceDeletion(l);
+ 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>& layer)
+{
+ // called by ~LayerCleaner() when all references to the IBinder (handle)
+ // are gone
+ return removeLayer(layer);
+}
+
+// ---------------------------------------------------------------------------
+
+void SurfaceFlinger::onInitializeDisplays() {
+ // reset screen orientation and use primary layer stack
+ Vector<ComposerState> state;
+ Vector<DisplayState> 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();
+ d.width = 0;
+ d.height = 0;
+ displays.add(d);
+ setTransactionState(state, displays, 0);
+ setPowerModeInternal(getDisplayDevice(d.token), HWC_POWER_MODE_NORMAL);
+
+ const nsecs_t period =
+ getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY);
+ mAnimFrameTracker.setDisplayRefreshPeriod(period);
+}
+
+void SurfaceFlinger::initializeDisplays() {
+ class MessageScreenInitialized : public MessageBase {
+ SurfaceFlinger* flinger;
+ public:
+ explicit MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { }
+ virtual bool handler() {
+ flinger->onInitializeDisplays();
+ return true;
+ }
+ };
+ sp<MessageBase> msg = new MessageScreenInitialized(this);
+ postMessageAsync(msg); // we may be called from main thread, use async message
+}
+
+void SurfaceFlinger::setPowerModeInternal(const sp<DisplayDevice>& hw,
+ int mode) {
+ ALOGD("Set power mode=%d, type=%d flinger=%p", mode, hw->getDisplayType(),
+ this);
+ int32_t type = hw->getDisplayType();
+ int currentMode = hw->getPowerMode();
+
+ if (mode == currentMode) {
+ ALOGD("Screen type=%d is already mode=%d", hw->getDisplayType(), mode);
+ return;
+ }
+
+ hw->setPowerMode(mode);
+ if (type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) {
+ ALOGW("Trying to set power mode for virtual display");
+ return;
+ }
+
+ if (mInterceptor.isEnabled()) {
+ Mutex::Autolock _l(mStateLock);
+ ssize_t idx = mCurrentState.displays.indexOfKey(hw->getDisplayToken());
+ if (idx < 0) {
+ ALOGW("Surface Interceptor SavePowerMode: invalid display token");
+ return;
+ }
+ mInterceptor.savePowerModeUpdate(mCurrentState.displays.valueAt(idx).displayId, mode);
+ }
+
+ if (currentMode == HWC_POWER_MODE_OFF) {
+ // Turn on the display
+ getHwComposer().setPowerMode(type, mode);
+ if (type == DisplayDevice::DISPLAY_PRIMARY) {
+ // FIXME: eventthread only knows about the main display right now
+ mEventThread->onScreenAcquired();
+ resyncToHardwareVsync(true);
+ }
+
+ mVisibleRegionsDirty = true;
+ mHasPoweredOff = true;
+ repaintEverything();
+
+ struct sched_param param = {0};
+ param.sched_priority = 1;
+ if (sched_setscheduler(0, SCHED_FIFO, ¶m) != 0) {
+ ALOGW("Couldn't set SCHED_FIFO on display on");
+ }
+ } else if (mode == HWC_POWER_MODE_OFF) {
+ // Turn off the display
+ struct sched_param param = {0};
+ if (sched_setscheduler(0, SCHED_OTHER, ¶m) != 0) {
+ ALOGW("Couldn't set SCHED_OTHER on display off");
+ }
+
+ if (type == DisplayDevice::DISPLAY_PRIMARY) {
+ disableHardwareVsync(true); // also cancels any in-progress resync
+
+ // FIXME: eventthread only knows about the main display right now
+ mEventThread->onScreenReleased();
+ }
+
+ getHwComposer().setPowerMode(type, mode);
+ mVisibleRegionsDirty = true;
+ // from this point on, SF will stop drawing on this display
+ } else {
+ getHwComposer().setPowerMode(type, mode);
+ }
+}
+
+void SurfaceFlinger::setPowerMode(const sp<IBinder>& display, int mode) {
+ class MessageSetPowerMode: public MessageBase {
+ SurfaceFlinger& mFlinger;
+ sp<IBinder> mDisplay;
+ int mMode;
+ public:
+ MessageSetPowerMode(SurfaceFlinger& flinger,
+ const sp<IBinder>& disp, int mode) : mFlinger(flinger),
+ mDisplay(disp) { mMode = mode; }
+ virtual bool handler() {
+ sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay));
+ if (hw == NULL) {
+ ALOGE("Attempt to set power mode = %d for null display %p",
+ mMode, mDisplay.get());
+ } else if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) {
+ ALOGW("Attempt to set power mode = %d for virtual display",
+ mMode);
+ } else {
+ mFlinger.setPowerModeInternal(hw, mMode);
+ }
+ return true;
+ }
+ };
+ sp<MessageBase> msg = new MessageSetPowerMode(*this, display, mode);
+ postMessageSync(msg);
+}
+
+// ---------------------------------------------------------------------------
+
+status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args)
+{
+ 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)) {
+ result.appendFormat("Permission Denial: "
+ "can't dump SurfaceFlinger from pid=%d, uid=%d\n", pid, uid);
+ } else {
+ // Try to get the main lock, but give up after one second
+ // (this would indicate SF is stuck, but we want to be able to
+ // print something in dumpsys).
+ status_t err = mStateLock.timedLock(s2ns(1));
+ bool locked = (err == NO_ERROR);
+ if (!locked) {
+ result.appendFormat(
+ "SurfaceFlinger appears to be unresponsive (%s [%d]), "
+ "dumping anyways (no locks held)\n", strerror(-err), err);
+ }
+
+ 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);
+ dumpAll = false;
+ }
+
+ if ((index < numArgs) &&
+ (args[index] == String16("--latency"))) {
+ index++;
+ dumpStatsLocked(args, index, result);
+ dumpAll = false;
+ }
+
+ if ((index < numArgs) &&
+ (args[index] == String16("--latency-clear"))) {
+ index++;
+ clearStatsLocked(args, index, result);
+ dumpAll = false;
+ }
+
+ if ((index < numArgs) &&
+ (args[index] == String16("--dispsync"))) {
+ index++;
+ mPrimaryDispSync.dump(result);
+ dumpAll = false;
+ }
+
+ if ((index < numArgs) &&
+ (args[index] == String16("--static-screen"))) {
+ index++;
+ dumpStaticScreenStats(result);
+ dumpAll = false;
+ }
+
+ if ((index < numArgs) &&
+ (args[index] == String16("--fences"))) {
+ index++;
+ mFenceTracker.dump(&result);
+ dumpAll = false;
+ }
+ }
+
+ if (dumpAll) {
+ dumpAllLocked(args, index, result);
+ }
+
+ if (locked) {
+ mStateLock.unlock();
+ }
+ }
+ write(fd, result.string(), result.size());
+ return NO_ERROR;
+}
+
+void SurfaceFlinger::listLayersLocked(const Vector<String16>& /* args */,
+ size_t& /* index */, String8& result) const
+{
+ const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
+ const size_t count = currentLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<Layer>& layer(currentLayers[i]);
+ result.appendFormat("%s\n", layer->getName().string());
+ }
+}
+
+void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index,
+ String8& result) const
+{
+ String8 name;
+ if (index < args.size()) {
+ name = String8(args[index]);
+ index++;
+ }
+
+ const nsecs_t period =
+ getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY);
+ result.appendFormat("%" PRId64 "\n", period);
+
+ if (name.isEmpty()) {
+ mAnimFrameTracker.dumpStats(result);
+ } else {
+ const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
+ const size_t count = currentLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<Layer>& layer(currentLayers[i]);
+ if (name == layer->getName()) {
+ layer->dumpFrameStats(result);
+ }
+ }
+ }
+}
+
+void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index,
+ String8& /* result */)
+{
+ 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<count ; i++) {
+ const sp<Layer>& layer(currentLayers[i]);
+ if (name.isEmpty() || (name == layer->getName())) {
+ layer->clearFrameStats();
+ }
+ }
+
+ mAnimFrameTracker.clearStats();
+}
+
+// This should only be called from the main thread. Otherwise it would need
+// the lock and should use mCurrentState rather than mDrawingState.
+void SurfaceFlinger::logFrameStats() {
+ const LayerVector& drawingLayers = mDrawingState.layersSortedByZ;
+ const size_t count = drawingLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<Layer>& layer(drawingLayers[i]);
+ layer->logFrameStats();
+ }
+
+ mAnimFrameTracker.logAndResetStats(String8("<win-anim>"));
+}
+
+/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result)
+{
+ static const char* config =
+ " [sf"
+#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::dumpStaticScreenStats(String8& result) const
+{
+ result.appendFormat("Static screen stats:\n");
+ for (size_t b = 0; b < NUM_BUCKETS - 1; ++b) {
+ float bucketTimeSec = mFrameBuckets[b] / 1e9;
+ float percent = 100.0f *
+ static_cast<float>(mFrameBuckets[b]) / mTotalTime;
+ result.appendFormat(" < %zd frames: %.3f s (%.1f%%)\n",
+ b + 1, bucketTimeSec, percent);
+ }
+ float bucketTimeSec = mFrameBuckets[NUM_BUCKETS - 1] / 1e9;
+ float percent = 100.0f *
+ static_cast<float>(mFrameBuckets[NUM_BUCKETS - 1]) / mTotalTime;
+ result.appendFormat(" %zd+ frames: %.3f s (%.1f%%)\n",
+ NUM_BUCKETS - 1, bucketTimeSec, percent);
+}
+
+void SurfaceFlinger::recordBufferingStats(const char* layerName,
+ std::vector<OccupancyTracker::Segment>&& history) {
+ Mutex::Autolock lock(mBufferingStatsMutex);
+ auto& stats = mBufferingStats[layerName];
+ for (const auto& segment : history) {
+ if (!segment.usedThirdBuffer) {
+ stats.twoBufferTime += segment.totalTime;
+ }
+ if (segment.occupancyAverage < 1.0f) {
+ stats.doubleBufferedTime += segment.totalTime;
+ } else if (segment.occupancyAverage < 2.0f) {
+ stats.tripleBufferedTime += segment.totalTime;
+ }
+ ++stats.numSegments;
+ stats.totalTime += segment.totalTime;
+ }
+}
+
+void SurfaceFlinger::dumpBufferingStats(String8& result) const {
+ result.append("Buffering stats:\n");
+ result.append(" [Layer name] <Active time> <Two buffer> "
+ "<Double buffered> <Triple buffered>\n");
+ Mutex::Autolock lock(mBufferingStatsMutex);
+ typedef std::tuple<std::string, float, float, float> BufferTuple;
+ std::map<float, BufferTuple, std::greater<float>> sorted;
+ for (const auto& statsPair : mBufferingStats) {
+ const char* name = statsPair.first.c_str();
+ const BufferingStats& stats = statsPair.second;
+ if (stats.numSegments == 0) {
+ continue;
+ }
+ float activeTime = ns2ms(stats.totalTime) / 1000.0f;
+ float twoBufferRatio = static_cast<float>(stats.twoBufferTime) /
+ stats.totalTime;
+ float doubleBufferRatio = static_cast<float>(
+ stats.doubleBufferedTime) / stats.totalTime;
+ float tripleBufferRatio = static_cast<float>(
+ stats.tripleBufferedTime) / stats.totalTime;
+ sorted.insert({activeTime, {name, twoBufferRatio,
+ doubleBufferRatio, tripleBufferRatio}});
+ }
+ for (const auto& sortedPair : sorted) {
+ float activeTime = sortedPair.first;
+ const BufferTuple& values = sortedPair.second;
+ result.appendFormat(" [%s] %.2f %.3f %.3f %.3f\n",
+ std::get<0>(values).c_str(), activeTime,
+ std::get<1>(values), std::get<2>(values),
+ std::get<3>(values));
+ }
+ result.append("\n");
+}
+
+void SurfaceFlinger::dumpAllLocked(const Vector<String16>& args, size_t& index,
+ String8& result) const
+{
+ bool colorize = false;
+ if (index < args.size()
+ && (args[index] == String16("--color"))) {
+ colorize = true;
+ index++;
+ }
+
+ Colorizer colorizer(colorize);
+
+ // 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.
+ */
+
+ colorizer.bold(result);
+ result.append("Build configuration:");
+ colorizer.reset(result);
+ appendSfConfigString(result);
+ appendUiConfigString(result);
+ appendGuiConfigString(result);
+ result.append("\n");
+
+ colorizer.bold(result);
+ result.append("Sync configuration: ");
+ colorizer.reset(result);
+ result.append(SyncFeatures::getInstance().toString());
+ result.append("\n");
+
+ colorizer.bold(result);
+ result.append("DispSync configuration: ");
+ colorizer.reset(result);
+ result.appendFormat("app phase %" PRId64 " ns, sf phase %" PRId64 " ns, "
+ "present offset %d ns (refresh %" PRId64 " ns)",
+ vsyncPhaseOffsetNs, sfVsyncPhaseOffsetNs, PRESENT_TIME_OFFSET_FROM_VSYNC_NS,
+ mHwc->getRefreshPeriod(HWC_DISPLAY_PRIMARY));
+ result.append("\n");
+
+ // Dump static screen stats
+ result.append("\n");
+ dumpStaticScreenStats(result);
+ result.append("\n");
+
+ dumpBufferingStats(result);
+
+ /*
+ * Dump the visible layer list
+ */
+ const LayerVector& currentLayers = mCurrentState.layersSortedByZ;
+ const size_t count = currentLayers.size();
+ colorizer.bold(result);
+ result.appendFormat("Visible layers (count = %zu)\n", count);
+ colorizer.reset(result);
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<Layer>& layer(currentLayers[i]);
+ layer->dump(result, colorizer);
+ }
+
+ /*
+ * Dump Display state
+ */
+
+ colorizer.bold(result);
+ result.appendFormat("Displays (%zu entries)\n", mDisplays.size());
+ colorizer.reset(result);
+ for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+ const sp<const DisplayDevice>& hw(mDisplays[dpy]);
+ hw->dump(result);
+ }
+
+ /*
+ * Dump SurfaceFlinger global state
+ */
+
+ colorizer.bold(result);
+ result.append("SurfaceFlinger global state:\n");
+ colorizer.reset(result);
+
+ HWComposer& hwc(getHwComposer());
+ sp<const DisplayDevice> hw(getDefaultDisplayDevice());
+
+ colorizer.bold(result);
+ result.appendFormat("EGL implementation : %s\n",
+ eglQueryStringImplementationANDROID(mEGLDisplay, EGL_VERSION));
+ colorizer.reset(result);
+ result.appendFormat("%s\n",
+ eglQueryStringImplementationANDROID(mEGLDisplay, EGL_EXTENSIONS));
+
+ mRenderEngine->dump(result);
+
+ hw->undefinedRegion.dump(result, "undefinedRegion");
+ result.appendFormat(" orientation=%d, isDisplayOn=%d\n",
+ hw->getOrientation(), hw->isDisplayOn());
+ result.appendFormat(
+ " 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"
+ " 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),
+ !mGpuToCpuSupported);
+
+ result.appendFormat(" eglSwapBuffers time: %f us\n",
+ inSwapBuffersDuration/1000.0);
+
+ result.appendFormat(" transaction time: %f us\n",
+ inTransactionDuration/1000.0);
+
+ /*
+ * VSYNC state
+ */
+ mEventThread->dump(result);
+
+ /*
+ * Dump HWComposer state
+ */
+ colorizer.bold(result);
+ result.append("h/w composer state:\n");
+ colorizer.reset(result);
+ result.appendFormat(" h/w composer %s and %s\n",
+ hwc.initCheck()==NO_ERROR ? "present" : "not present",
+ (mDebugDisableHWC || mDebugRegion || mDaltonize
+ || mHasColorMatrix) ? "disabled" : "enabled");
+ hwc.dump(result);
+
+ /*
+ * Dump gralloc state
+ */
+ const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+ alloc.dump(result);
+}
+
+const Vector< sp<Layer> >&
+SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) {
+ // Note: mStateLock is held here
+ wp<IBinder> dpy;
+ for (size_t i=0 ; i<mDisplays.size() ; i++) {
+ if (mDisplays.valueAt(i)->getHwcDisplayId() == 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 =
+ (decltype(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 CLEAR_ANIMATION_FRAME_STATS:
+ case GET_ANIMATION_FRAME_STATS:
+ case SET_POWER_MODE:
+ case GET_HDR_CAPABILITIES:
+ {
+ // codes that require permission check
+ IPCThreadState* ipc = IPCThreadState::self();
+ const int pid = ipc->getCallingPid();
+ const int uid = ipc->getCallingUid();
+ if ((uid != AID_GRAPHICS && uid != AID_SYSTEM) &&
+ !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<const DisplayDevice> hw(getDefaultDisplayDevice());
+ reply->writeInt32(hw->getPageFlipCount());
+ return NO_ERROR;
+ }
+ case 1014: {
+ // daltonize
+ n = data.readInt32();
+ switch (n % 10) {
+ case 1:
+ mDaltonizer.setType(ColorBlindnessType::Protanomaly);
+ break;
+ case 2:
+ mDaltonizer.setType(ColorBlindnessType::Deuteranomaly);
+ break;
+ case 3:
+ mDaltonizer.setType(ColorBlindnessType::Tritanomaly);
+ break;
+ }
+ if (n >= 10) {
+ mDaltonizer.setMode(ColorBlindnessMode::Correction);
+ } else {
+ mDaltonizer.setMode(ColorBlindnessMode::Simulation);
+ }
+ mDaltonize = n > 0;
+ invalidateHwcGeometry();
+ repaintEverything();
+ return NO_ERROR;
+ }
+ case 1015: {
+ // apply a color matrix
+ n = data.readInt32();
+ mHasColorMatrix = n ? 1 : 0;
+ if (n) {
+ // color matrix is sent as mat3 matrix followed by vec3
+ // offset, then packed into a mat4 where the last row is
+ // the offset and extra values are 0
+ for (size_t i = 0 ; i < 4; i++) {
+ for (size_t j = 0; j < 4; j++) {
+ mColorMatrix[i][j] = data.readFloat();
+ }
+ }
+ } else {
+ mColorMatrix = mat4();
+ }
+ invalidateHwcGeometry();
+ repaintEverything();
+ return NO_ERROR;
+ }
+ // This is an experimental interface
+ // Needs to be shifted to proper binder interface when we productize
+ case 1016: {
+ n = data.readInt32();
+ mPrimaryDispSync.setRefreshSkipCount(n);
+ return NO_ERROR;
+ }
+ case 1017: {
+ n = data.readInt32();
+ mForceFullDamage = static_cast<bool>(n);
+ return NO_ERROR;
+ }
+ case 1018: { // Modify Choreographer's phase offset
+ n = data.readInt32();
+ mEventThread->setPhaseOffset(static_cast<nsecs_t>(n));
+ return NO_ERROR;
+ }
+ case 1019: { // Modify SurfaceFlinger's phase offset
+ n = data.readInt32();
+ mSFEventThread->setPhaseOffset(static_cast<nsecs_t>(n));
+ return NO_ERROR;
+ }
+ case 1020: { // Layer updates interceptor
+ n = data.readInt32();
+ if (n) {
+ ALOGV("Interceptor enabled");
+ mInterceptor.enable(mDrawingState.layersSortedByZ, mDrawingState.displays);
+ }
+ else{
+ ALOGV("Interceptor disabled");
+ mInterceptor.disable();
+ }
+ return NO_ERROR;
+ }
+ case 1021: { // Disable HWC virtual displays
+ n = data.readInt32();
+ mUseHwcVirtualDisplays = !n;
+ return NO_ERROR;
+ }
+ }
+ }
+ return err;
+}
+
+void SurfaceFlinger::repaintEverything() {
+ android_atomic_or(1, &mRepaintEverything);
+ signalTransaction();
+}
+
+// ---------------------------------------------------------------------------
+// Capture screen into an IGraphiBufferProducer
+// ---------------------------------------------------------------------------
+
+/* The code below is here to handle b/8734824
+ *
+ * We create a IGraphicBufferProducer wrapper that forwards all calls
+ * from the surfaceflinger thread to the calling binder thread, where they
+ * are executed. This allows the calling thread in the calling process to be
+ * reused and not depend on having "enough" binder threads to handle the
+ * requests.
+ */
+class GraphicProducerWrapper : public BBinder, public MessageHandler {
+ /* Parts of GraphicProducerWrapper are run on two different threads,
+ * communicating by sending messages via Looper but also by shared member
+ * data. Coherence maintenance is subtle and in places implicit (ugh).
+ *
+ * Don't rely on Looper's sendMessage/handleMessage providing
+ * release/acquire semantics for any data not actually in the Message.
+ * Data going from surfaceflinger to binder threads needs to be
+ * synchronized explicitly.
+ *
+ * Barrier open/wait do provide release/acquire semantics. This provides
+ * implicit synchronization for data coming back from binder to
+ * surfaceflinger threads.
+ */
+
+ sp<IGraphicBufferProducer> impl;
+ sp<Looper> looper;
+ status_t result;
+ bool exitPending;
+ bool exitRequested;
+ Barrier barrier;
+ uint32_t code;
+ Parcel const* data;
+ Parcel* reply;
+
+ enum {
+ MSG_API_CALL,
+ MSG_EXIT
+ };
+
+ /*
+ * Called on surfaceflinger thread. This is called by our "fake"
+ * BpGraphicBufferProducer. We package the data and reply Parcel and
+ * forward them to the binder thread.
+ */
+ virtual status_t transact(uint32_t code,
+ const Parcel& data, Parcel* reply, uint32_t /* flags */) {
+ this->code = code;
+ this->data = &data;
+ this->reply = reply;
+ if (exitPending) {
+ // if we've exited, we run the message synchronously right here.
+ // note (JH): as far as I can tell from looking at the code, this
+ // never actually happens. if it does, i'm not sure if it happens
+ // on the surfaceflinger or binder thread.
+ handleMessage(Message(MSG_API_CALL));
+ } else {
+ barrier.close();
+ // Prevent stores to this->{code, data, reply} from being
+ // reordered later than the construction of Message.
+ atomic_thread_fence(memory_order_release);
+ looper->sendMessage(this, Message(MSG_API_CALL));
+ barrier.wait();
+ }
+ return result;
+ }
+
+ /*
+ * here we run on the binder thread. All we've got to do is
+ * call the real BpGraphicBufferProducer.
+ */
+ virtual void handleMessage(const Message& message) {
+ int what = message.what;
+ // Prevent reads below from happening before the read from Message
+ atomic_thread_fence(memory_order_acquire);
+ if (what == MSG_API_CALL) {
+ result = IInterface::asBinder(impl)->transact(code, data[0], reply);
+ barrier.open();
+ } else if (what == MSG_EXIT) {
+ exitRequested = true;
+ }
+ }
+
+public:
+ explicit GraphicProducerWrapper(const sp<IGraphicBufferProducer>& impl)
+ : impl(impl),
+ looper(new Looper(true)),
+ result(NO_ERROR),
+ exitPending(false),
+ exitRequested(false),
+ code(0),
+ data(NULL),
+ reply(NULL)
+ {}
+
+ // Binder thread
+ status_t waitForResponse() {
+ do {
+ looper->pollOnce(-1);
+ } while (!exitRequested);
+ return result;
+ }
+
+ // Client thread
+ void exit(status_t result) {
+ this->result = result;
+ exitPending = true;
+ // Ensure this->result is visible to the binder thread before it
+ // handles the message.
+ atomic_thread_fence(memory_order_release);
+ looper->sendMessage(this, Message(MSG_EXIT));
+ }
+};
+
+
+status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display,
+ const sp<IGraphicBufferProducer>& producer,
+ Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
+ uint32_t minLayerZ, uint32_t maxLayerZ,
+ bool useIdentityTransform, ISurfaceComposer::Rotation rotation) {
+
+ if (CC_UNLIKELY(display == 0))
+ return BAD_VALUE;
+
+ if (CC_UNLIKELY(producer == 0))
+ return BAD_VALUE;
+
+ // if we have secure windows on this display, never allow the screen capture
+ // unless the producer interface is local (i.e.: we can take a screenshot for
+ // ourselves).
+ bool isLocalScreenshot = IInterface::asBinder(producer)->localBinder();
+
+ // Convert to surfaceflinger's internal rotation type.
+ Transform::orientation_flags rotationFlags;
+ switch (rotation) {
+ case ISurfaceComposer::eRotateNone:
+ rotationFlags = Transform::ROT_0;
+ break;
+ case ISurfaceComposer::eRotate90:
+ rotationFlags = Transform::ROT_90;
+ break;
+ case ISurfaceComposer::eRotate180:
+ rotationFlags = Transform::ROT_180;
+ break;
+ case ISurfaceComposer::eRotate270:
+ rotationFlags = Transform::ROT_270;
+ break;
+ default:
+ rotationFlags = Transform::ROT_0;
+ ALOGE("Invalid rotation passed to captureScreen(): %d\n", rotation);
+ break;
+ }
+
+ class MessageCaptureScreen : public MessageBase {
+ SurfaceFlinger* flinger;
+ sp<IBinder> display;
+ sp<IGraphicBufferProducer> producer;
+ Rect sourceCrop;
+ uint32_t reqWidth, reqHeight;
+ uint32_t minLayerZ,maxLayerZ;
+ bool useIdentityTransform;
+ Transform::orientation_flags rotation;
+ status_t result;
+ bool isLocalScreenshot;
+ public:
+ MessageCaptureScreen(SurfaceFlinger* flinger,
+ const sp<IBinder>& display,
+ const sp<IGraphicBufferProducer>& producer,
+ Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
+ uint32_t minLayerZ, uint32_t maxLayerZ,
+ bool useIdentityTransform,
+ Transform::orientation_flags rotation,
+ bool isLocalScreenshot)
+ : flinger(flinger), display(display), producer(producer),
+ sourceCrop(sourceCrop), reqWidth(reqWidth), reqHeight(reqHeight),
+ minLayerZ(minLayerZ), maxLayerZ(maxLayerZ),
+ useIdentityTransform(useIdentityTransform),
+ rotation(rotation), result(PERMISSION_DENIED),
+ isLocalScreenshot(isLocalScreenshot)
+ {
+ }
+ status_t getResult() const {
+ return result;
+ }
+ virtual bool handler() {
+ Mutex::Autolock _l(flinger->mStateLock);
+ sp<const DisplayDevice> hw(flinger->getDisplayDevice(display));
+ result = flinger->captureScreenImplLocked(hw, producer,
+ sourceCrop, reqWidth, reqHeight, minLayerZ, maxLayerZ,
+ useIdentityTransform, rotation, isLocalScreenshot);
+ static_cast<GraphicProducerWrapper*>(IInterface::asBinder(producer).get())->exit(result);
+ return true;
+ }
+ };
+
+ // this creates a "fake" BBinder which will serve as a "fake" remote
+ // binder to receive the marshaled calls and forward them to the
+ // real remote (a BpGraphicBufferProducer)
+ sp<GraphicProducerWrapper> wrapper = new GraphicProducerWrapper(producer);
+
+ // the asInterface() call below creates our "fake" BpGraphicBufferProducer
+ // which does the marshaling work forwards to our "fake remote" above.
+ sp<MessageBase> msg = new MessageCaptureScreen(this,
+ display, IGraphicBufferProducer::asInterface( wrapper ),
+ sourceCrop, reqWidth, reqHeight, minLayerZ, maxLayerZ,
+ useIdentityTransform, rotationFlags, isLocalScreenshot);
+
+ status_t res = postMessageAsync(msg);
+ if (res == NO_ERROR) {
+ res = wrapper->waitForResponse();
+ }
+ return res;
+}
+
+
+void SurfaceFlinger::renderScreenImplLocked(
+ const sp<const DisplayDevice>& hw,
+ Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
+ uint32_t minLayerZ, uint32_t maxLayerZ,
+ bool yswap, bool useIdentityTransform, Transform::orientation_flags rotation)
+{
+ ATRACE_CALL();
+ RenderEngine& engine(getRenderEngine());
+
+ // get screen geometry
+ const int32_t hw_w = hw->getWidth();
+ const int32_t hw_h = hw->getHeight();
+ const bool filtering = static_cast<int32_t>(reqWidth) != hw_w ||
+ static_cast<int32_t>(reqHeight) != hw_h;
+
+ // if a default or invalid sourceCrop is passed in, set reasonable values
+ if (sourceCrop.width() == 0 || sourceCrop.height() == 0 ||
+ !sourceCrop.isValid()) {
+ sourceCrop.setLeftTop(Point(0, 0));
+ sourceCrop.setRightBottom(Point(hw_w, hw_h));
+ }
+
+ // ensure that sourceCrop is inside screen
+ if (sourceCrop.left < 0) {
+ ALOGE("Invalid crop rect: l = %d (< 0)", sourceCrop.left);
+ }
+ if (sourceCrop.right > hw_w) {
+ ALOGE("Invalid crop rect: r = %d (> %d)", sourceCrop.right, hw_w);
+ }
+ if (sourceCrop.top < 0) {
+ ALOGE("Invalid crop rect: t = %d (< 0)", sourceCrop.top);
+ }
+ if (sourceCrop.bottom > hw_h) {
+ ALOGE("Invalid crop rect: b = %d (> %d)", sourceCrop.bottom, hw_h);
+ }
+
+ // make sure to clear all GL error flags
+ engine.checkErrors();
+
+ // set-up our viewport
+ engine.setViewportAndProjection(
+ reqWidth, reqHeight, sourceCrop, hw_h, yswap, rotation);
+ engine.disableTexturing();
+
+ // redraw the screen entirely...
+ engine.clearWithColor(0, 0, 0, 1);
+
+ const LayerVector& layers( mDrawingState.layersSortedByZ );
+ const size_t count = layers.size();
+ for (size_t i=0 ; i<count ; ++i) {
+ const sp<Layer>& layer(layers[i]);
+ const Layer::State& state(layer->getDrawingState());
+ if (state.layerStack == hw->getLayerStack()) {
+ if (state.z >= minLayerZ && state.z <= maxLayerZ) {
+ if (layer->isVisible()) {
+ if (filtering) layer->setFiltering(true);
+ layer->draw(hw, useIdentityTransform);
+ if (filtering) layer->setFiltering(false);
+ }
+ }
+ }
+ }
+
+ // compositionComplete is needed for older driver
+ hw->compositionComplete();
+ hw->setViewportAndProjection();
+}
+
+
+status_t SurfaceFlinger::captureScreenImplLocked(
+ const sp<const DisplayDevice>& hw,
+ const sp<IGraphicBufferProducer>& producer,
+ Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
+ uint32_t minLayerZ, uint32_t maxLayerZ,
+ bool useIdentityTransform, Transform::orientation_flags rotation,
+ bool isLocalScreenshot)
+{
+ ATRACE_CALL();
+
+ // get screen geometry
+ uint32_t hw_w = hw->getWidth();
+ uint32_t hw_h = hw->getHeight();
+
+ if (rotation & Transform::ROT_90) {
+ std::swap(hw_w, hw_h);
+ }
+
+ 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;
+
+ bool secureLayerIsVisible = false;
+ const LayerVector& layers(mDrawingState.layersSortedByZ);
+ const size_t count = layers.size();
+ for (size_t i = 0 ; i < count ; ++i) {
+ const sp<Layer>& layer(layers[i]);
+ const Layer::State& state(layer->getDrawingState());
+ if (state.layerStack == hw->getLayerStack() && state.z >= minLayerZ &&
+ state.z <= maxLayerZ && layer->isVisible() &&
+ layer->isSecure()) {
+ secureLayerIsVisible = true;
+ }
+ }
+
+ if (!isLocalScreenshot && secureLayerIsVisible) {
+ ALOGW("FB is protected: PERMISSION_DENIED");
+ return PERMISSION_DENIED;
+ }
+
+ // create a surface (because we're a producer, and we need to
+ // dequeue/queue a buffer)
+ sp<Surface> sur = new Surface(producer, false);
+ ANativeWindow* window = sur.get();
+
+ status_t result = native_window_api_connect(window, NATIVE_WINDOW_API_EGL);
+ if (result == NO_ERROR) {
+ uint32_t usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN |
+ GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE;
+
+ int err = 0;
+ err = native_window_set_buffers_dimensions(window, reqWidth, reqHeight);
+ err |= native_window_set_scaling_mode(window, NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW);
+ err |= native_window_set_buffers_format(window, HAL_PIXEL_FORMAT_RGBA_8888);
+ err |= native_window_set_usage(window, usage);
+
+ if (err == NO_ERROR) {
+ ANativeWindowBuffer* buffer;
+ /* TODO: Once we have the sync framework everywhere this can use
+ * server-side waits on the fence that dequeueBuffer returns.
+ */
+ result = native_window_dequeue_buffer_and_wait(window, &buffer);
+ if (result == NO_ERROR) {
+ int syncFd = -1;
+ // create an EGLImage from the buffer so we can later
+ // turn it into a texture
+ EGLImageKHR image = eglCreateImageKHR(mEGLDisplay, EGL_NO_CONTEXT,
+ EGL_NATIVE_BUFFER_ANDROID, buffer, NULL);
+ if (image != EGL_NO_IMAGE_KHR) {
+ // this binds the given EGLImage as a framebuffer for the
+ // duration of this scope.
+ RenderEngine::BindImageAsFramebuffer imageBond(getRenderEngine(), image);
+ if (imageBond.getStatus() == NO_ERROR) {
+ // this will in fact render into our dequeued buffer
+ // via an FBO, which means we didn't have to create
+ // an EGLSurface and therefore we're not
+ // dependent on the context's EGLConfig.
+ renderScreenImplLocked(
+ hw, sourceCrop, reqWidth, reqHeight, minLayerZ, maxLayerZ, true,
+ useIdentityTransform, rotation);
+
+ // Attempt to create a sync khr object that can produce a sync point. If that
+ // isn't available, create a non-dupable sync object in the fallback path and
+ // wait on it directly.
+ EGLSyncKHR sync;
+ if (!DEBUG_SCREENSHOTS) {
+ sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, NULL);
+ // native fence fd will not be populated until flush() is done.
+ getRenderEngine().flush();
+ } else {
+ sync = EGL_NO_SYNC_KHR;
+ }
+ if (sync != EGL_NO_SYNC_KHR) {
+ // get the sync fd
+ syncFd = eglDupNativeFenceFDANDROID(mEGLDisplay, sync);
+ if (syncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
+ ALOGW("captureScreen: failed to dup sync khr object");
+ syncFd = -1;
+ }
+ eglDestroySyncKHR(mEGLDisplay, sync);
+ } else {
+ // fallback path
+ sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_FENCE_KHR, NULL);
+ if (sync != EGL_NO_SYNC_KHR) {
+ EGLint result = eglClientWaitSyncKHR(mEGLDisplay, sync,
+ EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, 2000000000 /*2 sec*/);
+ EGLint eglErr = eglGetError();
+ if (result == EGL_TIMEOUT_EXPIRED_KHR) {
+ ALOGW("captureScreen: fence wait timed out");
+ } else {
+ ALOGW_IF(eglErr != EGL_SUCCESS,
+ "captureScreen: error waiting on EGL fence: %#x", eglErr);
+ }
+ eglDestroySyncKHR(mEGLDisplay, sync);
+ } else {
+ ALOGW("captureScreen: error creating EGL fence: %#x", eglGetError());
+ }
+ }
+ if (DEBUG_SCREENSHOTS) {
+ uint32_t* pixels = new uint32_t[reqWidth*reqHeight];
+ getRenderEngine().readPixels(0, 0, reqWidth, reqHeight, pixels);
+ checkScreenshot(reqWidth, reqHeight, reqWidth, pixels,
+ hw, minLayerZ, maxLayerZ);
+ delete [] pixels;
+ }
+
+ } else {
+ ALOGE("got GL_FRAMEBUFFER_COMPLETE_OES error while taking screenshot");
+ result = INVALID_OPERATION;
+ window->cancelBuffer(window, buffer, syncFd);
+ buffer = NULL;
+ }
+ // destroy our image
+ eglDestroyImageKHR(mEGLDisplay, image);
+ } else {
+ result = BAD_VALUE;
+ }
+ if (buffer) {
+ // queueBuffer takes ownership of syncFd
+ result = window->queueBuffer(window, buffer, syncFd);
+ }
+ }
+ } else {
+ result = BAD_VALUE;
+ }
+ native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+ }
+
+ return result;
+}
+
+bool SurfaceFlinger::getFrameTimestamps(const Layer& layer,
+ uint64_t frameNumber, FrameTimestamps* outTimestamps) {
+ return mFenceTracker.getFrameTimestamps(layer, frameNumber, outTimestamps);
+}
+
+void SurfaceFlinger::checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
+ const sp<const DisplayDevice>& hw, uint32_t minLayerZ, uint32_t maxLayerZ) {
+ if (DEBUG_SCREENSHOTS) {
+ for (size_t y=0 ; y<h ; y++) {
+ uint32_t const * p = (uint32_t const *)vaddr + y*s;
+ for (size_t x=0 ; x<w ; x++) {
+ if (p[x] != 0xFF000000) return;
+ }
+ }
+ ALOGE("*** we just took a black screenshot ***\n"
+ "requested minz=%d, maxz=%d, layerStack=%d",
+ minLayerZ, maxLayerZ, hw->getLayerStack());
+ const LayerVector& layers( mDrawingState.layersSortedByZ );
+ const size_t count = layers.size();
+ for (size_t i=0 ; i<count ; ++i) {
+ const sp<Layer>& layer(layers[i]);
+ const Layer::State& state(layer->getDrawingState());
+ const bool visible = (state.layerStack == hw->getLayerStack())
+ && (state.z >= minLayerZ && state.z <= maxLayerZ)
+ && (layer->isVisible());
+ ALOGE("%c index=%zu, name=%s, layerStack=%d, z=%d, visible=%d, flags=%x, alpha=%x",
+ visible ? '+' : '-',
+ i, layer->getName().string(), state.layerStack, state.z,
+ layer->isVisible(), state.flags, state.alpha);
+ }
+ }
+}
+
+// ---------------------------------------------------------------------------
+
+SurfaceFlinger::LayerVector::LayerVector() {
+}
+
+SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs)
+ : SortedVector<sp<Layer> >(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<Layer>& l(*reinterpret_cast<const sp<Layer>*>(lhs));
+ const sp<Layer>& r(*reinterpret_cast<const sp<Layer>*>(rhs));
+
+ uint32_t ls = l->getCurrentState().layerStack;
+ uint32_t rs = r->getCurrentState().layerStack;
+ if (ls != rs)
+ return ls - rs;
+
+ uint32_t lz = l->getCurrentState().z;
+ uint32_t rz = r->getCurrentState().z;
+ if (lz != rz)
+ return lz - rz;
+
+ return l->sequence - r->sequence;
+}
+
+}; // namespace android
+
+
+#if defined(__gl_h_)
+#error "don't include gl/gl.h in this file"
+#endif
+
+#if defined(__gl2_h_)
+#error "don't include gl2/gl2.h in this file"
+#endif