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android / platform / frameworks / native / 876a1960e4a264a364ef14634840d5eebd78f01e / . / services / surfaceflinger / SurfaceFlinger.cpp
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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 0
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <sys/types.h>
#include <errno.h>
#include <dlfcn.h>
#include <algorithm>
#include <cinttypes>
#include <cmath>
#include <cstdint>
#include <functional>
#include <mutex>
#include <optional>
#include <unordered_map>
#include <cutils/properties.h>
#include <log/log.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/PermissionCache.h>
#include <compositionengine/CompositionEngine.h>
#include <compositionengine/Display.h>
#include <compositionengine/DisplayColorProfile.h>
#include <compositionengine/Layer.h>
#include <compositionengine/OutputLayer.h>
#include <compositionengine/RenderSurface.h>
#include <compositionengine/impl/LayerCompositionState.h>
#include <compositionengine/impl/OutputCompositionState.h>
#include <compositionengine/impl/OutputLayerCompositionState.h>
#include <dvr/vr_flinger.h>
#include <gui/BufferQueue.h>
#include <gui/DebugEGLImageTracker.h>
#include <gui/GuiConfig.h>
#include <gui/IDisplayEventConnection.h>
#include <gui/IProducerListener.h>
#include <gui/LayerDebugInfo.h>
#include <gui/Surface.h>
#include <input/IInputFlinger.h>
#include <renderengine/RenderEngine.h>
#include <ui/ColorSpace.h>
#include <ui/DebugUtils.h>
#include <ui/DisplayInfo.h>
#include <ui/DisplayStatInfo.h>
#include <ui/GraphicBufferAllocator.h>
#include <ui/PixelFormat.h>
#include <ui/UiConfig.h>
#include <utils/StopWatch.h>
#include <utils/String16.h>
#include <utils/String8.h>
#include <utils/Timers.h>
#include <utils/Trace.h>
#include <utils/misc.h>
#include <private/android_filesystem_config.h>
#include <private/gui/SyncFeatures.h>
#include "BufferLayer.h"
#include "BufferQueueLayer.h"
#include "BufferStateLayer.h"
#include "Client.h"
#include "ColorLayer.h"
#include "Colorizer.h"
#include "ContainerLayer.h"
#include "DisplayDevice.h"
#include "Layer.h"
#include "LayerVector.h"
#include "MonitoredProducer.h"
#include "NativeWindowSurface.h"
#include "RefreshRateOverlay.h"
#include "StartPropertySetThread.h"
#include "SurfaceFlinger.h"
#include "SurfaceInterceptor.h"
#include "DisplayHardware/ComposerHal.h"
#include "DisplayHardware/DisplayIdentification.h"
#include "DisplayHardware/FramebufferSurface.h"
#include "DisplayHardware/HWComposer.h"
#include "DisplayHardware/VirtualDisplaySurface.h"
#include "Effects/Daltonizer.h"
#include "RegionSamplingThread.h"
#include "Scheduler/DispSync.h"
#include "Scheduler/DispSyncSource.h"
#include "Scheduler/EventControlThread.h"
#include "Scheduler/EventThread.h"
#include "Scheduler/InjectVSyncSource.h"
#include "Scheduler/MessageQueue.h"
#include "Scheduler/PhaseOffsets.h"
#include "Scheduler/Scheduler.h"
#include "TimeStats/TimeStats.h"
#include <cutils/compiler.h>
#include "android-base/stringprintf.h"
#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
#include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
#include <android/hardware/configstore/1.1/types.h>
#include <android/hardware/power/1.0/IPower.h>
#include <configstore/Utils.h>
#include <layerproto/LayerProtoParser.h>
#include "SurfaceFlingerProperties.h"
namespace android {
using namespace android::hardware::configstore;
using namespace android::hardware::configstore::V1_0;
using namespace android::sysprop;
using android::hardware::power::V1_0::PowerHint;
using base::StringAppendF;
using ui::ColorMode;
using ui::Dataspace;
using ui::DisplayPrimaries;
using ui::Hdr;
using ui::RenderIntent;
namespace {
#pragma clang diagnostic push
#pragma clang diagnostic error "-Wswitch-enum"
bool isWideColorMode(const ColorMode colorMode) {
switch (colorMode) {
case ColorMode::DISPLAY_P3:
case ColorMode::ADOBE_RGB:
case ColorMode::DCI_P3:
case ColorMode::BT2020:
case ColorMode::DISPLAY_BT2020:
case ColorMode::BT2100_PQ:
case ColorMode::BT2100_HLG:
return true;
case ColorMode::NATIVE:
case ColorMode::STANDARD_BT601_625:
case ColorMode::STANDARD_BT601_625_UNADJUSTED:
case ColorMode::STANDARD_BT601_525:
case ColorMode::STANDARD_BT601_525_UNADJUSTED:
case ColorMode::STANDARD_BT709:
case ColorMode::SRGB:
return false;
}
return false;
}
bool isHdrColorMode(const ColorMode colorMode) {
switch (colorMode) {
case ColorMode::BT2100_PQ:
case ColorMode::BT2100_HLG:
return true;
case ColorMode::DISPLAY_P3:
case ColorMode::ADOBE_RGB:
case ColorMode::DCI_P3:
case ColorMode::BT2020:
case ColorMode::DISPLAY_BT2020:
case ColorMode::NATIVE:
case ColorMode::STANDARD_BT601_625:
case ColorMode::STANDARD_BT601_625_UNADJUSTED:
case ColorMode::STANDARD_BT601_525:
case ColorMode::STANDARD_BT601_525_UNADJUSTED:
case ColorMode::STANDARD_BT709:
case ColorMode::SRGB:
return false;
}
return false;
}
ui::Transform::orientation_flags fromSurfaceComposerRotation(ISurfaceComposer::Rotation rotation) {
switch (rotation) {
case ISurfaceComposer::eRotateNone:
return ui::Transform::ROT_0;
case ISurfaceComposer::eRotate90:
return ui::Transform::ROT_90;
case ISurfaceComposer::eRotate180:
return ui::Transform::ROT_180;
case ISurfaceComposer::eRotate270:
return ui::Transform::ROT_270;
}
ALOGE("Invalid rotation passed to captureScreen(): %d\n", rotation);
return ui::Transform::ROT_0;
}
#pragma clang diagnostic pop
class ConditionalLock {
public:
ConditionalLock(Mutex& mutex, bool lock) : mMutex(mutex), mLocked(lock) {
if (lock) {
mMutex.lock();
}
}
~ConditionalLock() { if (mLocked) mMutex.unlock(); }
private:
Mutex& mMutex;
bool mLocked;
};
// Currently we only support V0_SRGB and DISPLAY_P3 as composition preference.
bool validateCompositionDataspace(Dataspace dataspace) {
return dataspace == Dataspace::V0_SRGB || dataspace == Dataspace::DISPLAY_P3;
}
} // namespace anonymous
// ---------------------------------------------------------------------------
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");
// ---------------------------------------------------------------------------
int64_t SurfaceFlinger::dispSyncPresentTimeOffset;
bool SurfaceFlinger::useHwcForRgbToYuv;
uint64_t SurfaceFlinger::maxVirtualDisplaySize;
bool SurfaceFlinger::hasSyncFramework;
bool SurfaceFlinger::useVrFlinger;
int64_t SurfaceFlinger::maxFrameBufferAcquiredBuffers;
bool SurfaceFlinger::hasWideColorDisplay;
int SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientationDefault;
bool SurfaceFlinger::useColorManagement;
bool SurfaceFlinger::useContextPriority;
Dataspace SurfaceFlinger::defaultCompositionDataspace = Dataspace::V0_SRGB;
ui::PixelFormat SurfaceFlinger::defaultCompositionPixelFormat = ui::PixelFormat::RGBA_8888;
Dataspace SurfaceFlinger::wideColorGamutCompositionDataspace = Dataspace::V0_SRGB;
ui::PixelFormat SurfaceFlinger::wideColorGamutCompositionPixelFormat = ui::PixelFormat::RGBA_8888;
std::string getHwcServiceName() {
char value[PROPERTY_VALUE_MAX] = {};
property_get("debug.sf.hwc_service_name", value, "default");
ALOGI("Using HWComposer service: '%s'", value);
return std::string(value);
}
bool useTrebleTestingOverride() {
char value[PROPERTY_VALUE_MAX] = {};
property_get("debug.sf.treble_testing_override", value, "false");
ALOGI("Treble testing override: '%s'", value);
return std::string(value) == "true";
}
std::string decodeDisplayColorSetting(DisplayColorSetting displayColorSetting) {
switch(displayColorSetting) {
case DisplayColorSetting::MANAGED:
return std::string("Managed");
case DisplayColorSetting::UNMANAGED:
return std::string("Unmanaged");
case DisplayColorSetting::ENHANCED:
return std::string("Enhanced");
default:
return std::string("Unknown ") +
std::to_string(static_cast<int>(displayColorSetting));
}
}
SurfaceFlingerBE::SurfaceFlingerBE() : mHwcServiceName(getHwcServiceName()) {}
SurfaceFlinger::SurfaceFlinger(Factory& factory, SkipInitializationTag)
: mFactory(factory),
mPhaseOffsets(mFactory.createPhaseOffsets()),
mInterceptor(mFactory.createSurfaceInterceptor(this)),
mTimeStats(mFactory.createTimeStats()),
mEventQueue(mFactory.createMessageQueue()),
mCompositionEngine(mFactory.createCompositionEngine()) {}
SurfaceFlinger::SurfaceFlinger(Factory& factory) : SurfaceFlinger(factory, SkipInitialization) {
ALOGI("SurfaceFlinger is starting");
hasSyncFramework = running_without_sync_framework(true);
dispSyncPresentTimeOffset = present_time_offset_from_vsync_ns(0);
useHwcForRgbToYuv = force_hwc_copy_for_virtual_displays(false);
maxVirtualDisplaySize = max_virtual_display_dimension(0);
// Vr flinger is only enabled on Daydream ready devices.
useVrFlinger = use_vr_flinger(false);
maxFrameBufferAcquiredBuffers = max_frame_buffer_acquired_buffers(2);
hasWideColorDisplay = has_wide_color_display(false);
useColorManagement = use_color_management(false);
mDefaultCompositionDataspace =
static_cast<ui::Dataspace>(default_composition_dataspace(Dataspace::V0_SRGB));
mWideColorGamutCompositionDataspace = static_cast<ui::Dataspace>(wcg_composition_dataspace(
hasWideColorDisplay ? Dataspace::DISPLAY_P3 : Dataspace::V0_SRGB));
defaultCompositionDataspace = mDefaultCompositionDataspace;
wideColorGamutCompositionDataspace = mWideColorGamutCompositionDataspace;
defaultCompositionPixelFormat = static_cast<ui::PixelFormat>(
default_composition_pixel_format(ui::PixelFormat::RGBA_8888));
wideColorGamutCompositionPixelFormat =
static_cast<ui::PixelFormat>(wcg_composition_pixel_format(ui::PixelFormat::RGBA_8888));
mColorSpaceAgnosticDataspace =
static_cast<ui::Dataspace>(color_space_agnostic_dataspace(Dataspace::UNKNOWN));
useContextPriority = use_context_priority(true);
auto tmpPrimaryDisplayOrientation = primary_display_orientation(
SurfaceFlingerProperties::primary_display_orientation_values::ORIENTATION_0);
switch (tmpPrimaryDisplayOrientation) {
case SurfaceFlingerProperties::primary_display_orientation_values::ORIENTATION_90:
SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientation90;
break;
case SurfaceFlingerProperties::primary_display_orientation_values::ORIENTATION_180:
SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientation180;
break;
case SurfaceFlingerProperties::primary_display_orientation_values::ORIENTATION_270:
SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientation270;
break;
default:
SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientationDefault;
break;
}
ALOGV("Primary Display Orientation is set to %2d.", SurfaceFlinger::primaryDisplayOrientation);
mInternalDisplayPrimaries = sysprop::getDisplayNativePrimaries();
// 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);
ALOGI_IF(mDebugRegion, "showupdates enabled");
// DDMS debugging deprecated (b/120782499)
property_get("debug.sf.ddms", value, "0");
int debugDdms = atoi(value);
ALOGI_IF(debugDdms, "DDMS debugging not supported");
property_get("debug.sf.disable_backpressure", value, "0");
mPropagateBackpressure = !atoi(value);
ALOGI_IF(!mPropagateBackpressure, "Disabling backpressure propagation");
property_get("debug.sf.enable_gl_backpressure", value, "0");
mPropagateBackpressureClientComposition = atoi(value);
ALOGI_IF(mPropagateBackpressureClientComposition,
"Enabling backpressure propagation for Client Composition");
property_get("debug.sf.enable_hwc_vds", value, "0");
mUseHwcVirtualDisplays = atoi(value);
ALOGI_IF(mUseHwcVirtualDisplays, "Enabling HWC virtual displays");
property_get("ro.sf.disable_triple_buffer", value, "0");
mLayerTripleBufferingDisabled = atoi(value);
ALOGI_IF(mLayerTripleBufferingDisabled, "Disabling Triple Buffering");
const size_t defaultListSize = MAX_LAYERS;
auto listSize = property_get_int32("debug.sf.max_igbp_list_size", int32_t(defaultListSize));
mMaxGraphicBufferProducerListSize = (listSize > 0) ? size_t(listSize) : defaultListSize;
mUseSmart90ForVideo = use_smart_90_for_video(false);
property_get("debug.sf.use_smart_90_for_video", value, "0");
int int_value = atoi(value);
if (int_value) {
mUseSmart90ForVideo = true;
}
property_get("debug.sf.luma_sampling", value, "1");
mLumaSampling = atoi(value);
const auto [early, gl, late] = mPhaseOffsets->getCurrentOffsets();
mVsyncModulator.setPhaseOffsets(early, gl, late,
mPhaseOffsets->getOffsetThresholdForNextVsync());
// We should be reading 'persist.sys.sf.color_saturation' here
// but since /data may be encrypted, we need to wait until after vold
// comes online to attempt to read the property. The property is
// instead read after the boot animation
if (useTrebleTestingOverride()) {
// Without the override SurfaceFlinger cannot connect to HIDL
// services that are not listed in the manifests. Considered
// deriving the setting from the set service name, but it
// would be brittle if the name that's not 'default' is used
// for production purposes later on.
setenv("TREBLE_TESTING_OVERRIDE", "true", true);
}
}
void SurfaceFlinger::onFirstRef()
{
mEventQueue->init(this);
}
SurfaceFlinger::~SurfaceFlinger() = default;
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();
}
static sp<ISurfaceComposerClient> initClient(const sp<Client>& client) {
status_t err = client->initCheck();
if (err == NO_ERROR) {
return client;
}
return nullptr;
}
sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() {
return initClient(new Client(this));
}
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);
// Display ID is assigned when virtual display is allocated by HWC.
DisplayDeviceState state;
state.isSecure = secure;
state.displayName = displayName;
mCurrentState.displays.add(token, state);
mInterceptor->saveDisplayCreation(state);
return token;
}
void SurfaceFlinger::destroyDisplay(const sp<IBinder>& displayToken) {
Mutex::Autolock _l(mStateLock);
ssize_t index = mCurrentState.displays.indexOfKey(displayToken);
if (index < 0) {
ALOGE("destroyDisplay: Invalid display token %p", displayToken.get());
return;
}
const DisplayDeviceState& state = mCurrentState.displays.valueAt(index);
if (!state.isVirtual()) {
ALOGE("destroyDisplay called for non-virtual display");
return;
}
mInterceptor->saveDisplayDeletion(state.sequenceId);
mCurrentState.displays.removeItemsAt(index);
setTransactionFlags(eDisplayTransactionNeeded);
}
std::vector<PhysicalDisplayId> SurfaceFlinger::getPhysicalDisplayIds() const {
Mutex::Autolock lock(mStateLock);
const auto internalDisplayId = getInternalDisplayIdLocked();
if (!internalDisplayId) {
return {};
}
std::vector<PhysicalDisplayId> displayIds;
displayIds.reserve(mPhysicalDisplayTokens.size());
displayIds.push_back(internalDisplayId->value);
for (const auto& [id, token] : mPhysicalDisplayTokens) {
if (id != *internalDisplayId) {
displayIds.push_back(id.value);
}
}
return displayIds;
}
sp<IBinder> SurfaceFlinger::getPhysicalDisplayToken(PhysicalDisplayId displayId) const {
Mutex::Autolock lock(mStateLock);
return getPhysicalDisplayTokenLocked(DisplayId{displayId});
}
status_t SurfaceFlinger::getColorManagement(bool* outGetColorManagement) const {
if (!outGetColorManagement) {
return BAD_VALUE;
}
*outGetColorManagement = useColorManagement;
return NO_ERROR;
}
HWComposer& SurfaceFlinger::getHwComposer() const {
return mCompositionEngine->getHwComposer();
}
renderengine::RenderEngine& SurfaceFlinger::getRenderEngine() const {
return mCompositionEngine->getRenderEngine();
}
compositionengine::CompositionEngine& SurfaceFlinger::getCompositionEngine() const {
return *mCompositionEngine.get();
}
void SurfaceFlinger::bootFinished()
{
if (mStartPropertySetThread->join() != NO_ERROR) {
ALOGE("Join StartPropertySetThread failed!");
}
const nsecs_t now = systemTime();
const nsecs_t duration = now - mBootTime;
ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) );
// 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));
}
sp<IBinder> input(defaultServiceManager()->getService(
String16("inputflinger")));
if (input == nullptr) {
ALOGE("Failed to link to input service");
} else {
mInputFlinger = interface_cast<IInputFlinger>(input);
}
if (mVrFlinger) {
mVrFlinger->OnBootFinished();
}
// 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)));
postMessageAsync(new LambdaMessage([this]() NO_THREAD_SAFETY_ANALYSIS {
readPersistentProperties();
mBootStage = BootStage::FINISHED;
// set the refresh rate according to the policy
const auto& performanceRefreshRate =
mRefreshRateConfigs.getRefreshRate(RefreshRateType::PERFORMANCE);
if (performanceRefreshRate && isDisplayConfigAllowed(performanceRefreshRate->configId)) {
setRefreshRateTo(RefreshRateType::PERFORMANCE, Scheduler::ConfigEvent::None);
} else {
setRefreshRateTo(RefreshRateType::DEFAULT, Scheduler::ConfigEvent::None);
}
}));
}
uint32_t SurfaceFlinger::getNewTexture() {
{
std::lock_guard lock(mTexturePoolMutex);
if (!mTexturePool.empty()) {
uint32_t name = mTexturePool.back();
mTexturePool.pop_back();
ATRACE_INT("TexturePoolSize", mTexturePool.size());
return name;
}
// The pool was too small, so increase it for the future
++mTexturePoolSize;
}
// The pool was empty, so we need to get a new texture name directly using a
// blocking call to the main thread
uint32_t name = 0;
postMessageSync(new LambdaMessage([&]() { getRenderEngine().genTextures(1, &name); }));
return name;
}
void SurfaceFlinger::deleteTextureAsync(uint32_t texture) {
std::lock_guard lock(mTexturePoolMutex);
// We don't change the pool size, so the fix-up logic in postComposition will decide whether
// to actually delete this or not based on mTexturePoolSize
mTexturePool.push_back(texture);
ATRACE_INT("TexturePoolSize", mTexturePool.size());
}
// Do not call property_set on main thread which will be blocked by init
// Use StartPropertySetThread instead.
void SurfaceFlinger::init() {
ALOGI( "SurfaceFlinger's main thread ready to run. "
"Initializing graphics H/W...");
ALOGI("Phase offset NS: %" PRId64 "", mPhaseOffsets->getCurrentAppOffset());
Mutex::Autolock _l(mStateLock);
// start the EventThread
mScheduler =
getFactory().createScheduler([this](bool enabled) { setPrimaryVsyncEnabled(enabled); },
mRefreshRateConfigs);
auto resyncCallback =
mScheduler->makeResyncCallback(std::bind(&SurfaceFlinger::getVsyncPeriod, this));
mAppConnectionHandle =
mScheduler->createConnection("app", mVsyncModulator.getOffsets().app,
mPhaseOffsets->getOffsetThresholdForNextVsync(),
resyncCallback,
impl::EventThread::InterceptVSyncsCallback());
mSfConnectionHandle =
mScheduler->createConnection("sf", mVsyncModulator.getOffsets().sf,
mPhaseOffsets->getOffsetThresholdForNextVsync(),
resyncCallback, [this](nsecs_t timestamp) {
mInterceptor->saveVSyncEvent(timestamp);
});
mEventQueue->setEventConnection(mScheduler->getEventConnection(mSfConnectionHandle));
mVsyncModulator.setSchedulerAndHandles(mScheduler.get(), mAppConnectionHandle.get(),
mSfConnectionHandle.get());
mRegionSamplingThread =
new RegionSamplingThread(*this, *mScheduler,
RegionSamplingThread::EnvironmentTimingTunables());
// Get a RenderEngine for the given display / config (can't fail)
int32_t renderEngineFeature = 0;
renderEngineFeature |= (useColorManagement ?
renderengine::RenderEngine::USE_COLOR_MANAGEMENT : 0);
renderEngineFeature |= (useContextPriority ?
renderengine::RenderEngine::USE_HIGH_PRIORITY_CONTEXT : 0);
renderEngineFeature |=
(enable_protected_contents(false) ? renderengine::RenderEngine::ENABLE_PROTECTED_CONTEXT
: 0);
// TODO(b/77156734): We need to stop casting and use HAL types when possible.
// Sending maxFrameBufferAcquiredBuffers as the cache size is tightly tuned to single-display.
mCompositionEngine->setRenderEngine(
renderengine::RenderEngine::create(static_cast<int32_t>(defaultCompositionPixelFormat),
renderEngineFeature, maxFrameBufferAcquiredBuffers));
LOG_ALWAYS_FATAL_IF(mVrFlingerRequestsDisplay,
"Starting with vr flinger active is not currently supported.");
mCompositionEngine->setHwComposer(getFactory().createHWComposer(getBE().mHwcServiceName));
mCompositionEngine->getHwComposer().registerCallback(this, getBE().mComposerSequenceId);
// Process any initial hotplug and resulting display changes.
processDisplayHotplugEventsLocked();
const auto display = getDefaultDisplayDeviceLocked();
LOG_ALWAYS_FATAL_IF(!display, "Missing internal display after registering composer callback.");
LOG_ALWAYS_FATAL_IF(!getHwComposer().isConnected(*display->getId()),
"Internal display is disconnected.");
if (useVrFlinger) {
auto vrFlingerRequestDisplayCallback = [this](bool requestDisplay) {
// This callback is called from the vr flinger dispatch thread. We
// need to call signalTransaction(), which requires holding
// mStateLock when we're not on the main thread. Acquiring
// mStateLock from the vr flinger dispatch thread might trigger a
// deadlock in surface flinger (see b/66916578), so post a message
// to be handled on the main thread instead.
postMessageAsync(new LambdaMessage([=] {
ALOGI("VR request display mode: requestDisplay=%d", requestDisplay);
mVrFlingerRequestsDisplay = requestDisplay;
signalTransaction();
}));
};
mVrFlinger = dvr::VrFlinger::Create(getHwComposer().getComposer(),
getHwComposer()
.fromPhysicalDisplayId(*display->getId())
.value_or(0),
vrFlingerRequestDisplayCallback);
if (!mVrFlinger) {
ALOGE("Failed to start vrflinger");
}
}
// initialize our drawing state
mDrawingState = mCurrentState;
// set initial conditions (e.g. unblank default device)
initializeDisplays();
getRenderEngine().primeCache();
// Inform native graphics APIs whether the present timestamp is supported:
const bool presentFenceReliable =
!getHwComposer().hasCapability(HWC2::Capability::PresentFenceIsNotReliable);
mStartPropertySetThread = getFactory().createStartPropertySetThread(presentFenceReliable);
if (mStartPropertySetThread->Start() != NO_ERROR) {
ALOGE("Run StartPropertySetThread failed!");
}
mScheduler->setChangeRefreshRateCallback(
[this](RefreshRateType type, Scheduler::ConfigEvent event) {
Mutex::Autolock lock(mStateLock);
setRefreshRateTo(type, event);
});
mScheduler->setGetCurrentRefreshRateTypeCallback([this] {
Mutex::Autolock lock(mStateLock);
const auto display = getDefaultDisplayDeviceLocked();
if (!display) {
// If we don't have a default display the fallback to the default
// refresh rate type
return RefreshRateType::DEFAULT;
}
const int configId = display->getActiveConfig();
for (const auto& [type, refresh] : mRefreshRateConfigs.getRefreshRates()) {
if (refresh && refresh->configId == configId) {
return type;
}
}
// This should never happen, but just gracefully fallback to default.
return RefreshRateType::DEFAULT;
});
mScheduler->setGetVsyncPeriodCallback([this] {
Mutex::Autolock lock(mStateLock);
return getVsyncPeriod();
});
mRefreshRateConfigs.populate(getHwComposer().getConfigs(*display->getId()));
mRefreshRateStats.setConfigMode(getHwComposer().getActiveConfigIndex(*display->getId()));
ALOGV("Done initializing");
}
void SurfaceFlinger::readPersistentProperties() {
Mutex::Autolock _l(mStateLock);
char value[PROPERTY_VALUE_MAX];
property_get("persist.sys.sf.color_saturation", value, "1.0");
mGlobalSaturationFactor = atof(value);
updateColorMatrixLocked();
ALOGV("Saturation is set to %.2f", mGlobalSaturationFactor);
property_get("persist.sys.sf.native_mode", value, "0");
mDisplayColorSetting = static_cast<DisplayColorSetting>(atoi(value));
property_get("persist.sys.sf.color_mode", value, "0");
mForceColorMode = static_cast<ColorMode>(atoi(value));
}
void SurfaceFlinger::startBootAnim() {
// Start boot animation service by setting a property mailbox
// if property setting thread is already running, Start() will be just a NOP
mStartPropertySetThread->Start();
// Wait until property was set
if (mStartPropertySetThread->join() != NO_ERROR) {
ALOGE("Join StartPropertySetThread failed!");
}
}
size_t SurfaceFlinger::getMaxTextureSize() const {
return getRenderEngine().getMaxTextureSize();
}
size_t SurfaceFlinger::getMaxViewportDims() const {
return getRenderEngine().getMaxViewportDims();
}
// ----------------------------------------------------------------------------
bool SurfaceFlinger::authenticateSurfaceTexture(
const sp<IGraphicBufferProducer>& bufferProducer) const {
Mutex::Autolock _l(mStateLock);
return authenticateSurfaceTextureLocked(bufferProducer);
}
bool SurfaceFlinger::authenticateSurfaceTextureLocked(
const sp<IGraphicBufferProducer>& bufferProducer) const {
sp<IBinder> surfaceTextureBinder(IInterface::asBinder(bufferProducer));
return mGraphicBufferProducerList.count(surfaceTextureBinder.get()) > 0;
}
status_t SurfaceFlinger::getSupportedFrameTimestamps(
std::vector<FrameEvent>* outSupported) const {
*outSupported = {
FrameEvent::REQUESTED_PRESENT,
FrameEvent::ACQUIRE,
FrameEvent::LATCH,
FrameEvent::FIRST_REFRESH_START,
FrameEvent::LAST_REFRESH_START,
FrameEvent::GPU_COMPOSITION_DONE,
FrameEvent::DEQUEUE_READY,
FrameEvent::RELEASE,
};
ConditionalLock _l(mStateLock,
std::this_thread::get_id() != mMainThreadId);
if (!getHwComposer().hasCapability(
HWC2::Capability::PresentFenceIsNotReliable)) {
outSupported->push_back(FrameEvent::DISPLAY_PRESENT);
}
return NO_ERROR;
}
status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& displayToken,
Vector<DisplayInfo>* configs) {
if (!displayToken || !configs) {
return BAD_VALUE;
}
Mutex::Autolock lock(mStateLock);
const auto displayId = getPhysicalDisplayIdLocked(displayToken);
if (!displayId) {
return NAME_NOT_FOUND;
}
// TODO: Not sure if display density should handled by SF any longer
class Density {
static float getDensityFromProperty(char const* propName) {
char property[PROPERTY_VALUE_MAX];
float density = 0.0f;
if (property_get(propName, property, nullptr) > 0) {
density = strtof(property, nullptr);
}
return density;
}
public:
static float getEmuDensity() {
return getDensityFromProperty("qemu.sf.lcd_density"); }
static float getBuildDensity() {
return getDensityFromProperty("ro.sf.lcd_density"); }
};
configs->clear();
for (const auto& hwConfig : getHwComposer().getConfigs(*displayId)) {
DisplayInfo info = DisplayInfo();
float xdpi = hwConfig->getDpiX();
float ydpi = hwConfig->getDpiY();
info.w = hwConfig->getWidth();
info.h = hwConfig->getHeight();
// Default display viewport to display width and height
info.viewportW = info.w;
info.viewportH = info.h;
if (displayId == getInternalDisplayIdLocked()) {
// 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)
const auto display = getDefaultDisplayDeviceLocked();
info.orientation = display ? display->getOrientation() : 0;
// This is for screenrecord
const Rect viewport = display->getViewport();
if (viewport.isValid()) {
info.viewportW = uint32_t(viewport.getWidth());
info.viewportH = uint32_t(viewport.getHeight());
}
} else {
// TODO: where should this value come from?
static const int TV_DENSITY = 213;
info.density = TV_DENSITY / 160.0f;
info.orientation = 0;
}
info.xdpi = xdpi;
info.ydpi = ydpi;
info.fps = 1e9 / hwConfig->getVsyncPeriod();
const auto refreshRateType = mRefreshRateConfigs.getRefreshRateType(hwConfig->getId());
const auto offset = mPhaseOffsets->getOffsetsForRefreshRate(refreshRateType);
info.appVsyncOffset = offset.late.app;
// 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->getVsyncPeriod() - offset.late.sf + 1000000;
// All non-virtual displays are currently considered secure.
info.secure = true;
if (displayId == getInternalDisplayIdLocked() &&
primaryDisplayOrientation & DisplayState::eOrientationSwapMask) {
std::swap(info.w, info.h);
}
configs->push_back(info);
}
return NO_ERROR;
}
status_t SurfaceFlinger::getDisplayStats(const sp<IBinder>&, DisplayStatInfo* stats) {
if (!stats) {
return BAD_VALUE;
}
mScheduler->getDisplayStatInfo(stats);
return NO_ERROR;
}
int SurfaceFlinger::getActiveConfig(const sp<IBinder>& displayToken) {
const auto display = getDisplayDevice(displayToken);
if (!display) {
ALOGE("getActiveConfig: Invalid display token %p", displayToken.get());
return BAD_VALUE;
}
return display->getActiveConfig();
}
void SurfaceFlinger::setDesiredActiveConfig(const ActiveConfigInfo& info) {
ATRACE_CALL();
// Don't check against the current mode yet. Worst case we set the desired
// config twice. However event generation config might have changed so we need to update it
// accordingly
std::lock_guard<std::mutex> lock(mActiveConfigLock);
const Scheduler::ConfigEvent prevConfig = mDesiredActiveConfig.event;
mDesiredActiveConfig = info;
mDesiredActiveConfig.event = mDesiredActiveConfig.event | prevConfig;
if (!mDesiredActiveConfigChanged) {
// This will trigger HWC refresh without resetting the idle timer.
repaintEverythingForHWC();
// Start receiving vsync samples now, so that we can detect a period
// switch.
mScheduler->resyncToHardwareVsync(true, getVsyncPeriod());
// As we called to set period, we will call to onRefreshRateChangeCompleted once
// DispSync model is locked.
mVsyncModulator.onRefreshRateChangeInitiated();
mPhaseOffsets->setRefreshRateType(info.type);
const auto [early, gl, late] = mPhaseOffsets->getCurrentOffsets();
mVsyncModulator.setPhaseOffsets(early, gl, late,
mPhaseOffsets->getOffsetThresholdForNextVsync());
}
mDesiredActiveConfigChanged = true;
ATRACE_INT("DesiredActiveConfigChanged", mDesiredActiveConfigChanged);
if (mRefreshRateOverlay) {
mRefreshRateOverlay->changeRefreshRate(mDesiredActiveConfig.type);
}
}
status_t SurfaceFlinger::setActiveConfig(const sp<IBinder>& displayToken, int mode) {
ATRACE_CALL();
std::vector<int32_t> allowedConfig;
allowedConfig.push_back(mode);
return setAllowedDisplayConfigs(displayToken, allowedConfig);
}
void SurfaceFlinger::setActiveConfigInternal() {
ATRACE_CALL();
const auto display = getDefaultDisplayDeviceLocked();
if (!display) {
return;
}
std::lock_guard<std::mutex> lock(mActiveConfigLock);
mRefreshRateStats.setConfigMode(mUpcomingActiveConfig.configId);
display->setActiveConfig(mUpcomingActiveConfig.configId);
mPhaseOffsets->setRefreshRateType(mUpcomingActiveConfig.type);
const auto [early, gl, late] = mPhaseOffsets->getCurrentOffsets();
mVsyncModulator.setPhaseOffsets(early, gl, late,
mPhaseOffsets->getOffsetThresholdForNextVsync());
ATRACE_INT("ActiveConfigMode", mUpcomingActiveConfig.configId);
if (mUpcomingActiveConfig.event != Scheduler::ConfigEvent::None) {
mScheduler->onConfigChanged(mAppConnectionHandle, display->getId()->value,
mUpcomingActiveConfig.configId);
}
}
void SurfaceFlinger::desiredActiveConfigChangeDone() {
std::lock_guard<std::mutex> lock(mActiveConfigLock);
mDesiredActiveConfig.event = Scheduler::ConfigEvent::None;
mDesiredActiveConfigChanged = false;
ATRACE_INT("DesiredActiveConfigChanged", mDesiredActiveConfigChanged);
mScheduler->resyncToHardwareVsync(true, getVsyncPeriod());
mPhaseOffsets->setRefreshRateType(mUpcomingActiveConfig.type);
const auto [early, gl, late] = mPhaseOffsets->getCurrentOffsets();
mVsyncModulator.setPhaseOffsets(early, gl, late,
mPhaseOffsets->getOffsetThresholdForNextVsync());
}
bool SurfaceFlinger::performSetActiveConfig() {
ATRACE_CALL();
if (mCheckPendingFence) {
if (previousFrameMissed()) {
// fence has not signaled yet. wait for the next invalidate
mEventQueue->invalidate();
return true;
}
// We received the present fence from the HWC, so we assume it successfully updated
// the config, hence we update SF.
mCheckPendingFence = false;
setActiveConfigInternal();
}
// Store the local variable to release the lock.
ActiveConfigInfo desiredActiveConfig;
{
std::lock_guard<std::mutex> lock(mActiveConfigLock);
if (!mDesiredActiveConfigChanged) {
return false;
}
desiredActiveConfig = mDesiredActiveConfig;
}
const auto display = getDefaultDisplayDeviceLocked();
if (!display || display->getActiveConfig() == desiredActiveConfig.configId) {
// display is not valid or we are already in the requested mode
// on both cases there is nothing left to do
desiredActiveConfigChangeDone();
return false;
}
// Desired active config was set, it is different than the config currently in use, however
// allowed configs might have change by the time we process the refresh.
// Make sure the desired config is still allowed
if (!isDisplayConfigAllowed(desiredActiveConfig.configId)) {
desiredActiveConfigChangeDone();
return false;
}
mUpcomingActiveConfig = desiredActiveConfig;
const auto displayId = display->getId();
LOG_ALWAYS_FATAL_IF(!displayId);
ATRACE_INT("ActiveConfigModeHWC", mUpcomingActiveConfig.configId);
getHwComposer().setActiveConfig(*displayId, mUpcomingActiveConfig.configId);
// we need to submit an empty frame to HWC to start the process
mCheckPendingFence = true;
mEventQueue->invalidate();
return false;
}
status_t SurfaceFlinger::getDisplayColorModes(const sp<IBinder>& displayToken,
Vector<ColorMode>* outColorModes) {
if (!displayToken || !outColorModes) {
return BAD_VALUE;
}
std::vector<ColorMode> modes;
bool isInternalDisplay = false;
{
ConditionalLock lock(mStateLock, std::this_thread::get_id() != mMainThreadId);
const auto displayId = getPhysicalDisplayIdLocked(displayToken);
if (!displayId) {
return NAME_NOT_FOUND;
}
modes = getHwComposer().getColorModes(*displayId);
isInternalDisplay = displayId == getInternalDisplayIdLocked();
}
outColorModes->clear();
// If it's built-in display and the configuration claims it's not wide color capable,
// filter out all wide color modes. The typical reason why this happens is that the
// hardware is not good enough to support GPU composition of wide color, and thus the
// OEMs choose to disable this capability.
if (isInternalDisplay && !hasWideColorDisplay) {
std::remove_copy_if(modes.cbegin(), modes.cend(), std::back_inserter(*outColorModes),
isWideColorMode);
} else {
std::copy(modes.cbegin(), modes.cend(), std::back_inserter(*outColorModes));
}
return NO_ERROR;
}
status_t SurfaceFlinger::getDisplayNativePrimaries(const sp<IBinder>& displayToken,
ui::DisplayPrimaries &primaries) {
if (!displayToken) {
return BAD_VALUE;
}
// Currently we only support this API for a single internal display.
if (getInternalDisplayToken() != displayToken) {
return BAD_VALUE;
}
memcpy(&primaries, &mInternalDisplayPrimaries, sizeof(ui::DisplayPrimaries));
return NO_ERROR;
}
ColorMode SurfaceFlinger::getActiveColorMode(const sp<IBinder>& displayToken) {
if (const auto display = getDisplayDevice(displayToken)) {
return display->getCompositionDisplay()->getState().colorMode;
}
return static_cast<ColorMode>(BAD_VALUE);
}
status_t SurfaceFlinger::setActiveColorMode(const sp<IBinder>& displayToken, ColorMode mode) {
postMessageSync(new LambdaMessage([&] {
Vector<ColorMode> modes;
getDisplayColorModes(displayToken, &modes);
bool exists = std::find(std::begin(modes), std::end(modes), mode) != std::end(modes);
if (mode < ColorMode::NATIVE || !exists) {
ALOGE("Attempt to set invalid active color mode %s (%d) for display token %p",
decodeColorMode(mode).c_str(), mode, displayToken.get());
return;
}
const auto display = getDisplayDevice(displayToken);
if (!display) {
ALOGE("Attempt to set active color mode %s (%d) for invalid display token %p",
decodeColorMode(mode).c_str(), mode, displayToken.get());
} else if (display->isVirtual()) {
ALOGW("Attempt to set active color mode %s (%d) for virtual display",
decodeColorMode(mode).c_str(), mode);
} else {
display->getCompositionDisplay()->setColorMode(mode, Dataspace::UNKNOWN,
RenderIntent::COLORIMETRIC);
}
}));
return NO_ERROR;
}
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>& displayToken,
HdrCapabilities* outCapabilities) const {
Mutex::Autolock _l(mStateLock);
const auto display = getDisplayDeviceLocked(displayToken);
if (!display) {
ALOGE("getHdrCapabilities: Invalid display token %p", displayToken.get());
return BAD_VALUE;
}
// At this point the DisplayDeivce should already be set up,
// meaning the luminance information is already queried from
// hardware composer and stored properly.
const HdrCapabilities& capabilities = display->getHdrCapabilities();
*outCapabilities = HdrCapabilities(capabilities.getSupportedHdrTypes(),
capabilities.getDesiredMaxLuminance(),
capabilities.getDesiredMaxAverageLuminance(),
capabilities.getDesiredMinLuminance());
return NO_ERROR;
}
status_t SurfaceFlinger::getDisplayedContentSamplingAttributes(const sp<IBinder>& displayToken,
ui::PixelFormat* outFormat,
ui::Dataspace* outDataspace,
uint8_t* outComponentMask) const {
if (!outFormat || !outDataspace || !outComponentMask) {
return BAD_VALUE;
}
const auto display = getDisplayDevice(displayToken);
if (!display || !display->getId()) {
ALOGE("getDisplayedContentSamplingAttributes: Bad display token: %p", display.get());
return BAD_VALUE;
}
return getHwComposer().getDisplayedContentSamplingAttributes(*display->getId(), outFormat,
outDataspace, outComponentMask);
}
status_t SurfaceFlinger::setDisplayContentSamplingEnabled(const sp<IBinder>& displayToken,
bool enable, uint8_t componentMask,
uint64_t maxFrames) const {
const auto display = getDisplayDevice(displayToken);
if (!display || !display->getId()) {
ALOGE("setDisplayContentSamplingEnabled: Bad display token: %p", display.get());
return BAD_VALUE;
}
return getHwComposer().setDisplayContentSamplingEnabled(*display->getId(), enable,
componentMask, maxFrames);
}
status_t SurfaceFlinger::getDisplayedContentSample(const sp<IBinder>& displayToken,
uint64_t maxFrames, uint64_t timestamp,
DisplayedFrameStats* outStats) const {
const auto display = getDisplayDevice(displayToken);
if (!display || !display->getId()) {
ALOGE("getDisplayContentSample: Bad display token: %p", displayToken.get());
return BAD_VALUE;
}
return getHwComposer().getDisplayedContentSample(*display->getId(), maxFrames, timestamp,
outStats);
}
status_t SurfaceFlinger::getProtectedContentSupport(bool* outSupported) const {
if (!outSupported) {
return BAD_VALUE;
}
*outSupported = getRenderEngine().supportsProtectedContent();
return NO_ERROR;
}
status_t SurfaceFlinger::isWideColorDisplay(const sp<IBinder>& displayToken,
bool* outIsWideColorDisplay) const {
if (!displayToken || !outIsWideColorDisplay) {
return BAD_VALUE;
}
Mutex::Autolock _l(mStateLock);
const auto display = getDisplayDeviceLocked(displayToken);
if (!display) {
return BAD_VALUE;
}
// Use hasWideColorDisplay to override built-in display.
const auto displayId = display->getId();
if (displayId && displayId == getInternalDisplayIdLocked()) {
*outIsWideColorDisplay = hasWideColorDisplay;
return NO_ERROR;
}
*outIsWideColorDisplay = display->hasWideColorGamut();
return NO_ERROR;
}
status_t SurfaceFlinger::enableVSyncInjections(bool enable) {
postMessageSync(new LambdaMessage([&] {
Mutex::Autolock _l(mStateLock);
if (mInjectVSyncs == enable) {
return;
}
auto resyncCallback =
mScheduler->makeResyncCallback(std::bind(&SurfaceFlinger::getVsyncPeriod, this));
// TODO(b/128863962): Part of the Injector should be refactored, so that it
// can be passed to Scheduler.
if (enable) {
ALOGV("VSync Injections enabled");
if (mVSyncInjector.get() == nullptr) {
mVSyncInjector = std::make_unique<InjectVSyncSource>();
mInjectorEventThread = std::make_unique<
impl::EventThread>(mVSyncInjector.get(),
impl::EventThread::InterceptVSyncsCallback(),
"injEventThread");
}
mEventQueue->setEventThread(mInjectorEventThread.get(), std::move(resyncCallback));
} else {
ALOGV("VSync Injections disabled");
mEventQueue->setEventThread(mScheduler->getEventThread(mSfConnectionHandle),
std::move(resyncCallback));
}
mInjectVSyncs = enable;
}));
return NO_ERROR;
}
status_t SurfaceFlinger::injectVSync(nsecs_t when) {
Mutex::Autolock _l(mStateLock);
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;
}
status_t SurfaceFlinger::getLayerDebugInfo(std::vector<LayerDebugInfo>* outLayers) const
NO_THREAD_SAFETY_ANALYSIS {
// Try to acquire a lock for 1s, fail gracefully
const status_t err = mStateLock.timedLock(s2ns(1));
const bool locked = (err == NO_ERROR);
if (!locked) {
ALOGE("LayerDebugInfo: SurfaceFlinger unresponsive (%s [%d]) - exit", strerror(-err), err);
return TIMED_OUT;
}
outLayers->clear();
mCurrentState.traverseInZOrder([&](Layer* layer) {
outLayers->push_back(layer->getLayerDebugInfo());
});
mStateLock.unlock();
return NO_ERROR;
}
status_t SurfaceFlinger::getCompositionPreference(
Dataspace* outDataspace, ui::PixelFormat* outPixelFormat,
Dataspace* outWideColorGamutDataspace,
ui::PixelFormat* outWideColorGamutPixelFormat) const {
*outDataspace = mDefaultCompositionDataspace;
*outPixelFormat = defaultCompositionPixelFormat;
*outWideColorGamutDataspace = mWideColorGamutCompositionDataspace;
*outWideColorGamutPixelFormat = wideColorGamutCompositionPixelFormat;
return NO_ERROR;
}
status_t SurfaceFlinger::addRegionSamplingListener(const Rect& samplingArea,
const sp<IBinder>& stopLayerHandle,
const sp<IRegionSamplingListener>& listener) {
if (!listener || samplingArea == Rect::INVALID_RECT) {
return BAD_VALUE;
}
mRegionSamplingThread->addListener(samplingArea, stopLayerHandle, listener);
return NO_ERROR;
}
status_t SurfaceFlinger::removeRegionSamplingListener(const sp<IRegionSamplingListener>& listener) {
if (!listener) {
return BAD_VALUE;
}
mRegionSamplingThread->removeListener(listener);
return NO_ERROR;
}
status_t SurfaceFlinger::getDisplayBrightnessSupport(const sp<IBinder>& displayToken,
bool* outSupport) const {
if (!displayToken || !outSupport) {
return BAD_VALUE;
}
const auto displayId = getPhysicalDisplayIdLocked(displayToken);
if (!displayId) {
return NAME_NOT_FOUND;
}
*outSupport =
getHwComposer().hasDisplayCapability(displayId, HWC2::DisplayCapability::Brightness);
return NO_ERROR;
}
status_t SurfaceFlinger::setDisplayBrightness(const sp<IBinder>& displayToken,
float brightness) const {
if (!displayToken) {
return BAD_VALUE;
}
const auto displayId = getPhysicalDisplayIdLocked(displayToken);
if (!displayId) {
return NAME_NOT_FOUND;
}
return getHwComposer().setDisplayBrightness(*displayId, brightness);
}
status_t SurfaceFlinger::notifyPowerHint(int32_t hintId) {
PowerHint powerHint = static_cast<PowerHint>(hintId);
if (powerHint == PowerHint::INTERACTION) {
mScheduler->notifyTouchEvent();
}
return NO_ERROR;
}
// ----------------------------------------------------------------------------
sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection(
ISurfaceComposer::VsyncSource vsyncSource, ISurfaceComposer::ConfigChanged configChanged) {
auto resyncCallback = mScheduler->makeResyncCallback([this] {
Mutex::Autolock lock(mStateLock);
return getVsyncPeriod();
});
const auto& handle =
vsyncSource == eVsyncSourceSurfaceFlinger ? mSfConnectionHandle : mAppConnectionHandle;
return mScheduler->createDisplayEventConnection(handle, std::move(resyncCallback),
configChanged);
}
// ----------------------------------------------------------------------------
void SurfaceFlinger::waitForEvent() {
mEventQueue->waitMessage();
}
void SurfaceFlinger::signalTransaction() {
mScheduler->resetIdleTimer();
mEventQueue->invalidate();
}
void SurfaceFlinger::signalLayerUpdate() {
mScheduler->resetIdleTimer();
mEventQueue->invalidate();
}
void SurfaceFlinger::signalRefresh() {
mRefreshPending = true;
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);
}
nsecs_t SurfaceFlinger::getVsyncPeriod() const {
const auto displayId = getInternalDisplayIdLocked();
if (!displayId || !getHwComposer().isConnected(*displayId)) {
return 0;
}
const auto config = getHwComposer().getActiveConfig(*displayId);
return config ? config->getVsyncPeriod() : 0;
}
void SurfaceFlinger::onVsyncReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
int64_t timestamp) {
ATRACE_NAME("SF onVsync");
Mutex::Autolock lock(mStateLock);
// Ignore any vsyncs from a previous hardware composer.
if (sequenceId != getBE().mComposerSequenceId) {
return;
}
if (!getHwComposer().onVsync(hwcDisplayId, timestamp)) {
return;
}
if (hwcDisplayId != getHwComposer().getInternalHwcDisplayId()) {
// For now, we don't do anything with external display vsyncs.
return;
}
bool periodFlushed = false;
mScheduler->addResyncSample(timestamp, &periodFlushed);
if (periodFlushed) {
mVsyncModulator.onRefreshRateChangeCompleted();
}
}
void SurfaceFlinger::getCompositorTiming(CompositorTiming* compositorTiming) {
std::lock_guard<std::mutex> lock(getBE().mCompositorTimingLock);
*compositorTiming = getBE().mCompositorTiming;
}
bool SurfaceFlinger::isDisplayConfigAllowed(int32_t configId) {
return mAllowedDisplayConfigs.empty() || mAllowedDisplayConfigs.count(configId);
}
void SurfaceFlinger::setRefreshRateTo(RefreshRateType refreshRate, Scheduler::ConfigEvent event) {
const auto display = getDefaultDisplayDeviceLocked();
if (!display || mBootStage != BootStage::FINISHED) {
return;
}
ATRACE_CALL();
// Don't do any updating if the current fps is the same as the new one.
const auto& refreshRateConfig = mRefreshRateConfigs.getRefreshRate(refreshRate);
if (!refreshRateConfig) {
ALOGV("Skipping refresh rate change request for unsupported rate.");
return;
}
const int desiredConfigId = refreshRateConfig->configId;
if (!isDisplayConfigAllowed(desiredConfigId)) {
ALOGV("Skipping config %d as it is not part of allowed configs", desiredConfigId);
return;
}
setDesiredActiveConfig({refreshRate, desiredConfigId, event});
}
void SurfaceFlinger::onHotplugReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
HWC2::Connection connection) {
ALOGV("%s(%d, %" PRIu64 ", %s)", __FUNCTION__, sequenceId, hwcDisplayId,
connection == HWC2::Connection::Connected ? "connected" : "disconnected");
// Ignore events that do not have the right sequenceId.
if (sequenceId != getBE().mComposerSequenceId) {
return;
}
// Only lock if we're not on the main thread. This function is normally
// called on a hwbinder thread, but for the primary display it's called on
// the main thread with the state lock already held, so don't attempt to
// acquire it here.
ConditionalLock lock(mStateLock, std::this_thread::get_id() != mMainThreadId);
mPendingHotplugEvents.emplace_back(HotplugEvent{hwcDisplayId, connection});
if (std::this_thread::get_id() == mMainThreadId) {
// Process all pending hot plug events immediately if we are on the main thread.
processDisplayHotplugEventsLocked();
}
setTransactionFlags(eDisplayTransactionNeeded);
}
void SurfaceFlinger::onRefreshReceived(int sequenceId, hwc2_display_t /*hwcDisplayId*/) {
Mutex::Autolock lock(mStateLock);
if (sequenceId != getBE().mComposerSequenceId) {
return;
}
repaintEverythingForHWC();
}
void SurfaceFlinger::setPrimaryVsyncEnabled(bool enabled) {
ATRACE_CALL();
// Enable / Disable HWVsync from the main thread to avoid race conditions with
// display power state.
postMessageAsync(new LambdaMessage(
[=]() NO_THREAD_SAFETY_ANALYSIS { setPrimaryVsyncEnabledInternal(enabled); }));
}
void SurfaceFlinger::setPrimaryVsyncEnabledInternal(bool enabled) {
ATRACE_CALL();
mHWCVsyncPendingState = enabled ? HWC2::Vsync::Enable : HWC2::Vsync::Disable;
if (const auto displayId = getInternalDisplayIdLocked()) {
sp<DisplayDevice> display = getDefaultDisplayDeviceLocked();
if (display && display->isPoweredOn()) {
setVsyncEnabledInHWC(*displayId, mHWCVsyncPendingState);
}
}
}
// Note: it is assumed the caller holds |mStateLock| when this is called
void SurfaceFlinger::resetDisplayState() {
mScheduler->disableHardwareVsync(true);
// Clear the drawing state so that the logic inside of
// handleTransactionLocked will fire. It will determine the delta between
// mCurrentState and mDrawingState and re-apply all changes when we make the
// transition.
mDrawingState.displays.clear();
mDisplays.clear();
}
void SurfaceFlinger::updateVrFlinger() {
ATRACE_CALL();
if (!mVrFlinger)
return;
bool vrFlingerRequestsDisplay = mVrFlingerRequestsDisplay;
if (vrFlingerRequestsDisplay == getHwComposer().isUsingVrComposer()) {
return;
}
if (vrFlingerRequestsDisplay && !getHwComposer().getComposer()->isRemote()) {
ALOGE("Vr flinger is only supported for remote hardware composer"
" service connections. Ignoring request to transition to vr"
" flinger.");
mVrFlingerRequestsDisplay = false;
return;
}
Mutex::Autolock _l(mStateLock);
sp<DisplayDevice> display = getDefaultDisplayDeviceLocked();
LOG_ALWAYS_FATAL_IF(!display);
const int currentDisplayPowerMode = display->getPowerMode();
// Clear out all the output layers from the composition engine for all
// displays before destroying the hardware composer interface. This ensures
// any HWC layers are destroyed through that interface before it becomes
// invalid.
for (const auto& [token, displayDevice] : mDisplays) {
displayDevice->getCompositionDisplay()->setOutputLayersOrderedByZ(
compositionengine::Output::OutputLayers());
}
// This DisplayDevice will no longer be relevant once resetDisplayState() is
// called below. Clear the reference now so we don't accidentally use it
// later.
display.clear();
if (!vrFlingerRequestsDisplay) {
mVrFlinger->SeizeDisplayOwnership();
}
resetDisplayState();
// Delete the current instance before creating the new one
mCompositionEngine->setHwComposer(std::unique_ptr<HWComposer>());
mCompositionEngine->setHwComposer(getFactory().createHWComposer(
vrFlingerRequestsDisplay ? "vr" : getBE().mHwcServiceName));
getHwComposer().registerCallback(this, ++getBE().mComposerSequenceId);
LOG_ALWAYS_FATAL_IF(!getHwComposer().getComposer()->isRemote(),
"Switched to non-remote hardware composer");
if (vrFlingerRequestsDisplay) {
mVrFlinger->GrantDisplayOwnership();
}
mVisibleRegionsDirty = true;
invalidateHwcGeometry();
// Re-enable default display.
display = getDefaultDisplayDeviceLocked();
LOG_ALWAYS_FATAL_IF(!display);
setPowerModeInternal(display, currentDisplayPowerMode);
// Reset the timing values to account for the period of the swapped in HWC
const nsecs_t vsyncPeriod = getVsyncPeriod();
mAnimFrameTracker.setDisplayRefreshPeriod(vsyncPeriod);
// The present fences returned from vr_hwc are not an accurate
// representation of vsync times.
mScheduler->setIgnorePresentFences(getHwComposer().isUsingVrComposer() || !hasSyncFramework);
// Use phase of 0 since phase is not known.
// Use latency of 0, which will snap to the ideal latency.
DisplayStatInfo stats{0 /* vsyncTime */, vsyncPeriod};
setCompositorTimingSnapped(stats, 0);
mScheduler->resyncToHardwareVsync(false, vsyncPeriod);
mRepaintEverything = true;
setTransactionFlags(eDisplayTransactionNeeded);
}
bool SurfaceFlinger::previousFrameMissed(int graceTimeMs) NO_THREAD_SAFETY_ANALYSIS {
ATRACE_CALL();
// We are storing the last 2 present fences. If sf's phase offset is to be
// woken up before the actual vsync but targeting the next vsync, we need to check
// fence N-2
const sp<Fence>& fence =
mVsyncModulator.getOffsets().sf < mPhaseOffsets->getOffsetThresholdForNextVsync()
? mPreviousPresentFences[0]
: mPreviousPresentFences[1];
if (fence == Fence::NO_FENCE) {
return false;
}
if (graceTimeMs > 0 && fence->getStatus() == Fence::Status::Unsignaled) {
fence->wait(graceTimeMs);
}
return (fence->getStatus() == Fence::Status::Unsignaled);
}
void SurfaceFlinger::populateExpectedPresentTime() NO_THREAD_SAFETY_ANALYSIS {
DisplayStatInfo stats;
mScheduler->getDisplayStatInfo(&stats);
const nsecs_t presentTime = mScheduler->getDispSyncExpectedPresentTime();
// Inflate the expected present time if we're targetting the next vsync.
mExpectedPresentTime =
mVsyncModulator.getOffsets().sf < mPhaseOffsets->getOffsetThresholdForNextVsync()
? presentTime
: presentTime + stats.vsyncPeriod;
}
void SurfaceFlinger::onMessageReceived(int32_t what) NO_THREAD_SAFETY_ANALYSIS {
ATRACE_CALL();
switch (what) {
case MessageQueue::INVALIDATE: {
// calculate the expected present time once and use the cached
// value throughout this frame to make sure all layers are
// seeing this same value.
populateExpectedPresentTime();
// When Backpressure propagation is enabled we want to give a small grace period
// for the present fence to fire instead of just giving up on this frame to handle cases
// where present fence is just about to get signaled.
const int graceTimeForPresentFenceMs =
(mPropagateBackpressure &&
(mPropagateBackpressureClientComposition || !mHadClientComposition))
? 1
: 0;
bool frameMissed = previousFrameMissed(graceTimeForPresentFenceMs);
bool hwcFrameMissed = mHadDeviceComposition && frameMissed;
bool gpuFrameMissed = mHadClientComposition && frameMissed;
ATRACE_INT("FrameMissed", static_cast<int>(frameMissed));
ATRACE_INT("HwcFrameMissed", static_cast<int>(hwcFrameMissed));
ATRACE_INT("GpuFrameMissed", static_cast<int>(gpuFrameMissed));
if (frameMissed) {
mFrameMissedCount++;
mTimeStats->incrementMissedFrames();
}
if (hwcFrameMissed) {
mHwcFrameMissedCount++;
}
if (gpuFrameMissed) {
mGpuFrameMissedCount++;
}
if (mUseSmart90ForVideo) {
// This call is made each time SF wakes up and creates a new frame. It is part
// of video detection feature.
mScheduler->updateFpsBasedOnContent();
}
if (performSetActiveConfig()) {
break;
}
if (frameMissed && mPropagateBackpressure) {
if ((hwcFrameMissed && !gpuFrameMissed) ||
mPropagateBackpressureClientComposition) {
signalLayerUpdate();
break;
}
}
// Now that we're going to make it to the handleMessageTransaction()
// call below it's safe to call updateVrFlinger(), which will
// potentially trigger a display handoff.
updateVrFlinger();
bool refreshNeeded = handleMessageTransaction();
refreshNeeded |= handleMessageInvalidate();
updateCursorAsync();
updateInputFlinger();
refreshNeeded |= mRepaintEverything;
if (refreshNeeded && CC_LIKELY(mBootStage != BootStage::BOOTLOADER)) {
// 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() {
ATRACE_CALL();
uint32_t transactionFlags = peekTransactionFlags();
bool flushedATransaction = flushTransactionQueues();
bool runHandleTransaction = transactionFlags &&
((transactionFlags != eTransactionFlushNeeded) || flushedATransaction);
if (runHandleTransaction) {
handleTransaction(eTransactionMask);
} else {
getTransactionFlags(eTransactionFlushNeeded);
}
if (transactionFlushNeeded()) {
setTransactionFlags(eTransactionFlushNeeded);
}
return runHandleTransaction;
}
void SurfaceFlinger::handleMessageRefresh() {
ATRACE_CALL();
mRefreshPending = false;
const bool repaintEverything = mRepaintEverything.exchange(false);
preComposition();
rebuildLayerStacks();
calculateWorkingSet();
for (const auto& [token, display] : mDisplays) {
beginFrame(display);
prepareFrame(display);
doDebugFlashRegions(display, repaintEverything);
doComposition(display, repaintEverything);
}
logLayerStats();
postFrame();
postComposition();
mHadClientComposition = false;
mHadDeviceComposition = false;
for (const auto& [token, displayDevice] : mDisplays) {
auto display = displayDevice->getCompositionDisplay();
const auto displayId = display->getId();
mHadClientComposition =
mHadClientComposition || getHwComposer().hasClientComposition(displayId);
mHadDeviceComposition =
mHadDeviceComposition || getHwComposer().hasDeviceComposition(displayId);
}
mVsyncModulator.onRefreshed(mHadClientComposition);
mLayersWithQueuedFrames.clear();
}
bool SurfaceFlinger::handleMessageInvalidate() {
ATRACE_CALL();
bool refreshNeeded = handlePageFlip();
if (mVisibleRegionsDirty) {
computeLayerBounds();
if (mTracingEnabled) {
mTracing.notify("visibleRegionsDirty");
}
}
for (auto& layer : mLayersPendingRefresh) {
Region visibleReg;
visibleReg.set(layer->getScreenBounds());
invalidateLayerStack(layer, visibleReg);
}
mLayersPendingRefresh.clear();
return refreshNeeded;
}
void SurfaceFlinger::calculateWorkingSet() {
ATRACE_CALL();
ALOGV(__FUNCTION__);
// build the h/w work list
if (CC_UNLIKELY(mGeometryInvalid)) {
mGeometryInvalid = false;
for (const auto& [token, displayDevice] : mDisplays) {
auto display = displayDevice->getCompositionDisplay();
uint32_t zOrder = 0;
for (auto& layer : display->getOutputLayersOrderedByZ()) {
auto& compositionState = layer->editState();
compositionState.forceClientComposition = false;
if (!compositionState.hwc || mDebugDisableHWC || mDebugRegion) {
compositionState.forceClientComposition = true;
}
// The output Z order is set here based on a simple counter.
compositionState.z = zOrder++;
// Update the display independent composition state. This goes
// to the general composition layer state structure.
// TODO: Do this once per compositionengine::CompositionLayer.
layer->getLayerFE().latchCompositionState(layer->getLayer().editState().frontEnd,
true);
// Recalculate the geometry state of the output layer.
layer->updateCompositionState(true);
// Write the updated geometry state to the HWC
layer->writeStateToHWC(true);
}
}
}
// Set the per-frame data
for (const auto& [token, displayDevice] : mDisplays) {
auto display = displayDevice->getCompositionDisplay();
const auto displayId = display->getId();
if (!displayId) {
continue;
}
auto* profile = display->getDisplayColorProfile();
if (mDrawingState.colorMatrixChanged) {
display->setColorTransform(mDrawingState.colorMatrix);
}
Dataspace targetDataspace = Dataspace::UNKNOWN;
if (useColorManagement) {
ColorMode colorMode;
RenderIntent renderIntent;
pickColorMode(displayDevice, &colorMode, &targetDataspace, &renderIntent);
display->setColorMode(colorMode, targetDataspace, renderIntent);
if (isHdrColorMode(colorMode)) {
targetDataspace = Dataspace::UNKNOWN;
} else if (mColorSpaceAgnosticDataspace != Dataspace::UNKNOWN) {
targetDataspace = mColorSpaceAgnosticDataspace;
}
}
for (auto& layer : displayDevice->getVisibleLayersSortedByZ()) {
if (layer->isHdrY410()) {
layer->forceClientComposition(displayDevice);
} else if ((layer->getDataSpace() == Dataspace::BT2020_PQ ||
layer->getDataSpace() == Dataspace::BT2020_ITU_PQ) &&
!profile->hasHDR10Support()) {
layer->forceClientComposition(displayDevice);
} else if ((layer->getDataSpace() == Dataspace::BT2020_HLG ||
layer->getDataSpace() == Dataspace::BT2020_ITU_HLG) &&
!profile->hasHLGSupport()) {
layer->forceClientComposition(displayDevice);
}
if (layer->getRoundedCornerState().radius > 0.0f) {
layer->forceClientComposition(displayDevice);
}
if (layer->getForceClientComposition(displayDevice)) {
ALOGV("[%s] Requesting Client composition", layer->getName().string());
layer->setCompositionType(displayDevice,
Hwc2::IComposerClient::Composition::CLIENT);
continue;
}
const auto& displayState = display->getState();
layer->setPerFrameData(displayDevice, displayState.transform, displayState.viewport,
displayDevice->getSupportedPerFrameMetadata(), targetDataspace);
}
}
mDrawingState.colorMatrixChanged = false;
for (const auto& [token, displayDevice] : mDisplays) {
auto display = displayDevice->getCompositionDisplay();
for (auto& layer : displayDevice->getVisibleLayersSortedByZ()) {
auto& layerState = layer->getCompositionLayer()->editState().frontEnd;
layerState.compositionType = static_cast<Hwc2::IComposerClient::Composition>(
layer->getCompositionType(displayDevice));
}
}
}
void SurfaceFlinger::doDebugFlashRegions(const sp<DisplayDevice>& displayDevice,
bool repaintEverything) {
auto display = displayDevice->getCompositionDisplay();
const auto& displayState = display->getState();
// is debugging enabled
if (CC_LIKELY(!mDebugRegion))
return;
if (displayState.isEnabled) {
// transform the dirty region into this screen's coordinate space
const Region dirtyRegion = display->getDirtyRegion(repaintEverything);
if (!dirtyRegion.isEmpty()) {
base::unique_fd readyFence;
// redraw the whole screen
doComposeSurfaces(displayDevice, dirtyRegion, &readyFence);
display->getRenderSurface()->queueBuffer(std::move(readyFence));
}
}
postFramebuffer(displayDevice);
if (mDebugRegion > 1) {
usleep(mDebugRegion * 1000);
}
prepareFrame(displayDevice);
}
void SurfaceFlinger::logLayerStats() {
ATRACE_CALL();
if (CC_UNLIKELY(mLayerStats.isEnabled())) {
for (const auto& [token, display] : mDisplays) {
if (display->isPrimary()) {
mLayerStats.logLayerStats(dumpVisibleLayersProtoInfo(display));
return;
}
}
ALOGE("logLayerStats: no primary display");
}
}
void SurfaceFlinger::preComposition()
{
ATRACE_CALL();
ALOGV("preComposition");
mRefreshStartTime = systemTime(SYSTEM_TIME_MONOTONIC);
bool needExtraInvalidate = false;
mDrawingState.traverseInZOrder([&](Layer* layer) {
if (layer->onPreComposition(mRefreshStartTime)) {
needExtraInvalidate = true;
}
});
if (needExtraInvalidate) {
signalLayerUpdate();
}
}
void SurfaceFlinger::updateCompositorTiming(const DisplayStatInfo& stats, nsecs_t compositeTime,
std::shared_ptr<FenceTime>& presentFenceTime) {
// Update queue of past composite+present times and determine the
// most recently known composite to present latency.
getBE().mCompositePresentTimes.push({compositeTime, presentFenceTime});
nsecs_t compositeToPresentLatency = -1;
while (!getBE().mCompositePresentTimes.empty()) {
SurfaceFlingerBE::CompositePresentTime& cpt = getBE().mCompositePresentTimes.front();
// Cached values should have been updated before calling this method,
// which helps avoid duplicate syscalls.
nsecs_t displayTime = cpt.display->getCachedSignalTime();
if (displayTime == Fence::SIGNAL_TIME_PENDING) {
break;
}
compositeToPresentLatency = displayTime - cpt.composite;
getBE().mCompositePresentTimes.pop();
}
// Don't let mCompositePresentTimes grow unbounded, just in case.
while (getBE().mCompositePresentTimes.size() > 16) {
getBE().mCompositePresentTimes.pop();
}
setCompositorTimingSnapped(stats, compositeToPresentLatency);
}
void SurfaceFlinger::setCompositorTimingSnapped(const DisplayStatInfo& stats,
nsecs_t compositeToPresentLatency) {
// Integer division and modulo round toward 0 not -inf, so we need to
// treat negative and positive offsets differently.
nsecs_t idealLatency = (mPhaseOffsets->getCurrentSfOffset() > 0)
? (stats.vsyncPeriod - (mPhaseOffsets->getCurrentSfOffset() % stats.vsyncPeriod))
: ((-mPhaseOffsets->getCurrentSfOffset()) % stats.vsyncPeriod);
// Just in case mPhaseOffsets->getCurrentSfOffset() == -vsyncInterval.
if (idealLatency <= 0) {
idealLatency = stats.vsyncPeriod;
}
// Snap the latency to a value that removes scheduling jitter from the
// composition and present times, which often have >1ms of jitter.
// Reducing jitter is important if an app attempts to extrapolate
// something (such as user input) to an accurate diasplay time.
// Snapping also allows an app to precisely calculate mPhaseOffsets->getCurrentSfOffset()
// with (presentLatency % interval).
nsecs_t bias = stats.vsyncPeriod / 2;
int64_t extraVsyncs = (compositeToPresentLatency - idealLatency + bias) / stats.vsyncPeriod;
nsecs_t snappedCompositeToPresentLatency =
(extraVsyncs > 0) ? idealLatency + (extraVsyncs * stats.vsyncPeriod) : idealLatency;
std::lock_guard<std::mutex> lock(getBE().mCompositorTimingLock);
getBE().mCompositorTiming.deadline = stats.vsyncTime - idealLatency;
getBE().mCompositorTiming.interval = stats.vsyncPeriod;
getBE().mCompositorTiming.presentLatency = snappedCompositeToPresentLatency;
}
void SurfaceFlinger::postComposition()
{
ATRACE_CALL();
ALOGV("postComposition");
// Release any buffers which were replaced this frame
nsecs_t dequeueReadyTime = systemTime();
for (auto& layer : mLayersWithQueuedFrames) {
layer->releasePendingBuffer(dequeueReadyTime);
}
// |mStateLock| not needed as we are on the main thread
const auto displayDevice = getDefaultDisplayDeviceLocked();
getBE().mGlCompositionDoneTimeline.updateSignalTimes();
std::shared_ptr<FenceTime> glCompositionDoneFenceTime;
if (displayDevice && getHwComposer().hasClientComposition(displayDevice->getId())) {
glCompositionDoneFenceTime =
std::make_shared<FenceTime>(displayDevice->getCompositionDisplay()
->getRenderSurface()
->getClientTargetAcquireFence());
getBE().mGlCompositionDoneTimeline.push(glCompositionDoneFenceTime);
} else {
glCompositionDoneFenceTime = FenceTime::NO_FENCE;
}
getBE().mDisplayTimeline.updateSignalTimes();
mPreviousPresentFences[1] = mPreviousPresentFences[0];
mPreviousPresentFences[0] = displayDevice
? getHwComposer().getPresentFence(*displayDevice->getId())
: Fence::NO_FENCE;
auto presentFenceTime = std::make_shared<FenceTime>(mPreviousPresentFences[0]);
getBE().mDisplayTimeline.push(presentFenceTime);
DisplayStatInfo stats;
mScheduler->getDisplayStatInfo(&stats);
// We use the mRefreshStartTime which might be sampled a little later than
// when we started doing work for this frame, but that should be okay
// since updateCompositorTiming has snapping logic.
updateCompositorTiming(stats, mRefreshStartTime, presentFenceTime);
CompositorTiming compositorTiming;
{
std::lock_guard<std::mutex> lock(getBE().mCompositorTimingLock);
compositorTiming = getBE().mCompositorTiming;
}
mDrawingState.traverseInZOrder([&](Layer* layer) {
bool frameLatched =
layer->onPostComposition(displayDevice->getId(), glCompositionDoneFenceTime,
presentFenceTime, compositorTiming);
if (frameLatched) {
recordBufferingStats(layer->getName().string(),
layer->getOccupancyHistory(false));
}
});
if (presentFenceTime->isValid()) {
mScheduler->addPresentFence(presentFenceTime);
}
if (!hasSyncFramework) {
if (displayDevice && getHwComposer().isConnected(*displayDevice->getId()) &&
displayDevice->isPoweredOn()) {
mScheduler->enableHardwareVsync();
}
}
if (mAnimCompositionPending) {
mAnimCompositionPending = false;
if (presentFenceTime->isValid()) {
mAnimFrameTracker.setActualPresentFence(
std::move(presentFenceTime));
} else if (displayDevice && getHwComposer().isConnected(*displayDevice->getId())) {
// The HWC doesn't support present fences, so use the refresh
// timestamp instead.
const nsecs_t presentTime =
getHwComposer().getRefreshTimestamp(*displayDevice->getId());
mAnimFrameTracker.setActualPresentTime(presentTime);
}
mAnimFrameTracker.advanceFrame();
}
mTimeStats->incrementTotalFrames();
if (mHadClientComposition) {
mTimeStats->incrementClientCompositionFrames();
}
mTimeStats->setPresentFenceGlobal(presentFenceTime);
if (displayDevice && getHwComposer().isConnected(*displayDevice->getId()) &&
!displayDevice->isPoweredOn()) {
return;
}
nsecs_t currentTime = systemTime();
if (mHasPoweredOff) {
mHasPoweredOff = false;
} else {
nsecs_t elapsedTime = currentTime - getBE().mLastSwapTime;
size_t numPeriods = static_cast<size_t>(elapsedTime / stats.vsyncPeriod);
if (numPeriods < SurfaceFlingerBE::NUM_BUCKETS - 1) {
getBE().mFrameBuckets[numPeriods] += elapsedTime;
} else {
getBE().mFrameBuckets[SurfaceFlingerBE::NUM_BUCKETS - 1] += elapsedTime;
}
getBE().mTotalTime += elapsedTime;
}
getBE().mLastSwapTime = currentTime;
{
std::lock_guard lock(mTexturePoolMutex);
if (mTexturePool.size() < mTexturePoolSize) {
const size_t refillCount = mTexturePoolSize - mTexturePool.size();
const size_t offset = mTexturePool.size();
mTexturePool.resize(mTexturePoolSize);
getRenderEngine().genTextures(refillCount, mTexturePool.data() + offset);
ATRACE_INT("TexturePoolSize", mTexturePool.size());
} else if (mTexturePool.size() > mTexturePoolSize) {
const size_t deleteCount = mTexturePool.size() - mTexturePoolSize;
const size_t offset = mTexturePoolSize;
getRenderEngine().deleteTextures(deleteCount, mTexturePool.data() + offset);
mTexturePool.resize(mTexturePoolSize);
ATRACE_INT("TexturePoolSize", mTexturePool.size());
}
}
mTransactionCompletedThread.addPresentFence(mPreviousPresentFences[0]);
// Lock the mStateLock in case SurfaceFlinger is in the middle of applying a transaction.
// If we do not lock here, a callback could be sent without all of its SurfaceControls and
// metrics.
{
Mutex::Autolock _l(mStateLock);
mTransactionCompletedThread.sendCallbacks();
}
if (mLumaSampling && mRegionSamplingThread) {
mRegionSamplingThread->notifyNewContent();
}
// Even though ATRACE_INT64 already checks if tracing is enabled, it doesn't prevent the
// side-effect of getTotalSize(), so we check that again here
if (ATRACE_ENABLED()) {
ATRACE_INT64("Total Buffer Size", GraphicBufferAllocator::get().getTotalSize());
}
}
void SurfaceFlinger::computeLayerBounds() {
for (const auto& pair : mDisplays) {
const auto& displayDevice = pair.second;
const auto display = displayDevice->getCompositionDisplay();
for (const auto& layer : mDrawingState.layersSortedByZ) {
// only consider the layers on the given layer stack
if (!display->belongsInOutput(layer->getLayerStack(), layer->getPrimaryDisplayOnly())) {
continue;
}
layer->computeBounds(displayDevice->getViewport().toFloatRect(), ui::Transform());
}
}
}
void SurfaceFlinger::rebuildLayerStacks() {
ATRACE_CALL();
ALOGV("rebuildLayerStacks");
// rebuild the visible layer list per screen
if (CC_UNLIKELY(mVisibleRegionsDirty)) {
ATRACE_NAME("rebuildLayerStacks VR Dirty");
mVisibleRegionsDirty = false;
invalidateHwcGeometry();
for (const auto& pair : mDisplays) {
const auto& displayDevice = pair.second;
auto display = displayDevice->getCompositionDisplay();
const auto& displayState = display->getState();
Region opaqueRegion;
Region dirtyRegion;
compositionengine::Output::OutputLayers layersSortedByZ;
Vector<sp<Layer>> deprecated_layersSortedByZ;
Vector<sp<Layer>> layersNeedingFences;
const ui::Transform& tr = displayState.transform;
const Rect bounds = displayState.bounds;
if (displayState.isEnabled) {
computeVisibleRegions(displayDevice, dirtyRegion, opaqueRegion);
mDrawingState.traverseInZOrder([&](Layer* layer) {
auto compositionLayer = layer->getCompositionLayer();
if (compositionLayer == nullptr) {
return;
}
const auto displayId = displayDevice->getId();
sp<compositionengine::LayerFE> layerFE = compositionLayer->getLayerFE();
LOG_ALWAYS_FATAL_IF(layerFE.get() == nullptr);
bool needsOutputLayer = false;
if (display->belongsInOutput(layer->getLayerStack(),
layer->getPrimaryDisplayOnly())) {
Region drawRegion(tr.transform(
layer->visibleNonTransparentRegion));
drawRegion.andSelf(bounds);
if (!drawRegion.isEmpty()) {
needsOutputLayer = true;
}
}
if (needsOutputLayer) {
layersSortedByZ.emplace_back(
display->getOrCreateOutputLayer(displayId, compositionLayer,
layerFE));
deprecated_layersSortedByZ.add(layer);
auto& outputLayerState = layersSortedByZ.back()->editState();
outputLayerState.visibleRegion =
tr.transform(layer->visibleRegion.intersect(displayState.viewport));
} else if (displayId) {
// For layers that are being removed from a HWC display,
// and that have queued frames, add them to a a list of
// released layers so we can properly set a fence.
bool hasExistingOutputLayer =
display->getOutputLayerForLayer(compositionLayer.get()) != nullptr;
bool hasQueuedFrames = std::find(mLayersWithQueuedFrames.cbegin(),
mLayersWithQueuedFrames.cend(),
layer) != mLayersWithQueuedFrames.cend();
if (hasExistingOutputLayer && hasQueuedFrames) {
layersNeedingFences.add(layer);
}
}
});
}
display->setOutputLayersOrderedByZ(std::move(layersSortedByZ));
displayDevice->setVisibleLayersSortedByZ(deprecated_layersSortedByZ);
displayDevice->setLayersNeedingFences(layersNeedingFences);
Region undefinedRegion{bounds};
undefinedRegion.subtractSelf(tr.transform(opaqueRegion));
display->editState().undefinedRegion = undefinedRegion;
display->editState().dirtyRegion.orSelf(dirtyRegion);
}
}
}
// Returns a data space that fits all visible layers. The returned data space
// can only be one of
// - Dataspace::SRGB (use legacy dataspace and let HWC saturate when colors are enhanced)
// - Dataspace::DISPLAY_P3
// - Dataspace::DISPLAY_BT2020
// The returned HDR data space is one of
// - Dataspace::UNKNOWN
// - Dataspace::BT2020_HLG
// - Dataspace::BT2020_PQ
Dataspace SurfaceFlinger::getBestDataspace(const sp<DisplayDevice>& display,
Dataspace* outHdrDataSpace,
bool* outIsHdrClientComposition) const {
Dataspace bestDataSpace = Dataspace::V0_SRGB;
*outHdrDataSpace = Dataspace::UNKNOWN;
for (const auto& layer : display->getVisibleLayersSortedByZ()) {
switch (layer->getDataSpace()) {
case Dataspace::V0_SCRGB:
case Dataspace::V0_SCRGB_LINEAR:
case Dataspace::BT2020:
case Dataspace::BT2020_ITU:
case Dataspace::BT2020_LINEAR:
case Dataspace::DISPLAY_BT2020:
bestDataSpace = Dataspace::DISPLAY_BT2020;
break;
case Dataspace::DISPLAY_P3:
bestDataSpace = Dataspace::DISPLAY_P3;
break;
case Dataspace::BT2020_PQ:
case Dataspace::BT2020_ITU_PQ:
bestDataSpace = Dataspace::DISPLAY_P3;
*outHdrDataSpace = Dataspace::BT2020_PQ;
*outIsHdrClientComposition = layer->getForceClientComposition(display);
break;
case Dataspace::BT2020_HLG:
case Dataspace::BT2020_ITU_HLG:
bestDataSpace = Dataspace::DISPLAY_P3;
// When there's mixed PQ content and HLG content, we set the HDR
// data space to be BT2020_PQ and convert HLG to PQ.
if (*outHdrDataSpace == Dataspace::UNKNOWN) {
*outHdrDataSpace = Dataspace::BT2020_HLG;
}
break;
default:
break;
}
}
return bestDataSpace;
}
// Pick the ColorMode / Dataspace for the display device.
void SurfaceFlinger::pickColorMode(const sp<DisplayDevice>& display, ColorMode* outMode,
Dataspace* outDataSpace, RenderIntent* outRenderIntent) const {
if (mDisplayColorSetting == DisplayColorSetting::UNMANAGED) {
*outMode = ColorMode::NATIVE;
*outDataSpace = Dataspace::UNKNOWN;
*outRenderIntent = RenderIntent::COLORIMETRIC;
return;
}
Dataspace hdrDataSpace;
bool isHdrClientComposition = false;
Dataspace bestDataSpace = getBestDataspace(display, &hdrDataSpace, &isHdrClientComposition);
auto* profile = display->getCompositionDisplay()->getDisplayColorProfile();
switch (mForceColorMode) {
case ColorMode::SRGB:
bestDataSpace = Dataspace::V0_SRGB;
break;
case ColorMode::DISPLAY_P3:
bestDataSpace = Dataspace::DISPLAY_P3;
break;
default:
break;
}
// respect hdrDataSpace only when there is no legacy HDR support
const bool isHdr = hdrDataSpace != Dataspace::UNKNOWN &&
!profile->hasLegacyHdrSupport(hdrDataSpace) && !isHdrClientComposition;
if (isHdr) {
bestDataSpace = hdrDataSpace;
}
RenderIntent intent;
switch (mDisplayColorSetting) {
case DisplayColorSetting::MANAGED:
case DisplayColorSetting::UNMANAGED:
intent = isHdr ? RenderIntent::TONE_MAP_COLORIMETRIC : RenderIntent::COLORIMETRIC;
break;
case DisplayColorSetting::ENHANCED:
intent = isHdr ? RenderIntent::TONE_MAP_ENHANCE : RenderIntent::ENHANCE;
break;
default: // vendor display color setting
intent = static_cast<RenderIntent>(mDisplayColorSetting);
break;
}
profile->getBestColorMode(bestDataSpace, intent, outDataSpace, outMode, outRenderIntent);
}
void SurfaceFlinger::beginFrame(const sp<DisplayDevice>& displayDevice) {
auto display = displayDevice->getCompositionDisplay();
const auto& displayState = display->getState();
bool dirty = !display->getDirtyRegion(false).isEmpty();
bool empty = displayDevice->getVisibleLayersSortedByZ().size() == 0;
bool wasEmpty = !displayState.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);
const char flagPrefix[] = {'-', '+'};
static_cast<void>(flagPrefix);
ALOGV_IF(displayDevice->isVirtual(), "%s: %s composition for %s (%cdirty %cempty %cwasEmpty)",
__FUNCTION__, mustRecompose ? "doing" : "skipping",
displayDevice->getDebugName().c_str(), flagPrefix[dirty], flagPrefix[empty],
flagPrefix[wasEmpty]);
display->getRenderSurface()->beginFrame(mustRecompose);
if (mustRecompose) {
display->editState().lastCompositionHadVisibleLayers = !empty;
}
}
void SurfaceFlinger::prepareFrame(const sp<DisplayDevice>& displayDevice) {
auto display = displayDevice->getCompositionDisplay();
const auto& displayState = display->getState();
if (!displayState.isEnabled) {
return;
}
status_t result = display->getRenderSurface()->prepareFrame();
ALOGE_IF(result != NO_ERROR, "prepareFrame failed for %s: %d (%s)",
displayDevice->getDebugName().c_str(), result, strerror(-result));
}
void SurfaceFlinger::doComposition(const sp<DisplayDevice>& displayDevice, bool repaintEverything) {
ATRACE_CALL();
ALOGV("doComposition");
auto display = displayDevice->getCompositionDisplay();
const auto& displayState = display->getState();
if (displayState.isEnabled) {
// transform the dirty region into this screen's coordinate space
const Region dirtyRegion = display->getDirtyRegion(repaintEverything);
// repaint the framebuffer (if needed)
doDisplayComposition(displayDevice, dirtyRegion);
display->editState().dirtyRegion.clear();
display->getRenderSurface()->flip();
}
postFramebuffer(displayDevice);
}
void SurfaceFlinger::postFrame()
{
// |mStateLock| not needed as we are on the main thread
const auto display = getDefaultDisplayDeviceLocked();
if (display && getHwComposer().isConnected(*display->getId())) {
uint32_t flipCount = display->getPageFlipCount();
if (flipCount % LOG_FRAME_STATS_PERIOD == 0) {
logFrameStats();
}
}
}
void SurfaceFlinger::postFramebuffer(const sp<DisplayDevice>& displayDevice) {
ATRACE_CALL();
ALOGV("postFramebuffer");
auto display = displayDevice->getCompositionDisplay();
const auto& displayState = display->getState();
const auto displayId = display->getId();
if (displayState.isEnabled) {
if (displayId) {
getHwComposer().presentAndGetReleaseFences(*displayId);
}
display->getRenderSurface()->onPresentDisplayCompleted();
for (auto& layer : display->getOutputLayersOrderedByZ()) {
sp<Fence> releaseFence = Fence::NO_FENCE;
bool usedClientComposition = true;
// The layer buffer from the previous frame (if any) is released
// by HWC only when the release fence from this frame (if any) is
// signaled. Always get the release fence from HWC first.
if (layer->getState().hwc) {
const auto& hwcState = *layer->getState().hwc;
releaseFence =
getHwComposer().getLayerReleaseFence(*displayId, hwcState.hwcLayer.get());
usedClientComposition =
hwcState.hwcCompositionType == Hwc2::IComposerClient::Composition::CLIENT;
}
// If the layer was client composited in the previous frame, we
// need to merge with the previous client target acquire fence.
// Since we do not track that, always merge with the current
// client target acquire fence when it is available, even though
// this is suboptimal.
if (usedClientComposition) {
releaseFence =
Fence::merge("LayerRelease", releaseFence,
display->getRenderSurface()->getClientTargetAcquireFence());
}
layer->getLayerFE().onLayerDisplayed(releaseFence);
}
// We've got a list of layers needing fences, that are disjoint with
// display->getVisibleLayersSortedByZ. The best we can do is to
// supply them with the present fence.
if (!displayDevice->getLayersNeedingFences().isEmpty()) {
sp<Fence> presentFence =
displayId ? getHwComposer().getPresentFence(*displayId) : Fence::NO_FENCE;
for (auto& layer : displayDevice->getLayersNeedingFences()) {
layer->getCompositionLayer()->getLayerFE()->onLayerDisplayed(presentFence);
}
}
if (displayId) {
getHwComposer().clearReleaseFences(*displayId);
}
}
}
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);
mDebugInTransaction = systemTime();
// 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.
mVsyncModulator.onTransactionHandled();
transactionFlags = getTransactionFlags(eTransactionMask);
handleTransactionLocked(transactionFlags);
mDebugInTransaction = 0;
invalidateHwcGeometry();
// here the transaction has been committed
}
void SurfaceFlinger::processDisplayHotplugEventsLocked() {
for (const auto& event : mPendingHotplugEvents) {
const std::optional<DisplayIdentificationInfo> info =
getHwComposer().onHotplug(event.hwcDisplayId, event.connection);
if (!info) {
continue;
}
if (event.connection == HWC2::Connection::Connected) {
if (!mPhysicalDisplayTokens.count(info->id)) {
ALOGV("Creating display %s", to_string(info->id).c_str());
mPhysicalDisplayTokens[info->id] = new BBinder();
DisplayDeviceState state;
state.displayId = info->id;
state.isSecure = true; // All physical displays are currently considered secure.
state.displayName = info->name;
mCurrentState.displays.add(mPhysicalDisplayTokens[info->id], state);
mInterceptor->saveDisplayCreation(state);
}
} else {
ALOGV("Removing display %s", to_string(info->id).c_str());
ssize_t index = mCurrentState.displays.indexOfKey(mPhysicalDisplayTokens[info->id]);
if (index >= 0) {
const DisplayDeviceState& state = mCurrentState.displays.valueAt(index);
mInterceptor->saveDisplayDeletion(state.sequenceId);
mCurrentState.displays.removeItemsAt(index);
}
mPhysicalDisplayTokens.erase(info->id);
}
processDisplayChangesLocked();
}
mPendingHotplugEvents.clear();
}
void SurfaceFlinger::dispatchDisplayHotplugEvent(PhysicalDisplayId displayId, bool connected) {
mScheduler->hotplugReceived(mAppConnectionHandle, displayId, connected);
mScheduler->hotplugReceived(mSfConnectionHandle, displayId, connected);
}
sp<DisplayDevice> SurfaceFlinger::setupNewDisplayDeviceInternal(
const wp<IBinder>& displayToken, const std::optional<DisplayId>& displayId,
const DisplayDeviceState& state, const sp<compositionengine::DisplaySurface>& dispSurface,
const sp<IGraphicBufferProducer>& producer) {
DisplayDeviceCreationArgs creationArgs(this, displayToken, displayId);
creationArgs.sequenceId = state.sequenceId;
creationArgs.isVirtual = state.isVirtual();
creationArgs.isSecure = state.isSecure;
creationArgs.displaySurface = dispSurface;
creationArgs.hasWideColorGamut = false;
creationArgs.supportedPerFrameMetadata = 0;
const bool isInternalDisplay = displayId && displayId == getInternalDisplayIdLocked();
creationArgs.isPrimary = isInternalDisplay;
if (useColorManagement && displayId) {
std::vector<ColorMode> modes = getHwComposer().getColorModes(*displayId);
for (ColorMode colorMode : modes) {
if (isWideColorMode(colorMode)) {
creationArgs.hasWideColorGamut = true;
}
std::vector<RenderIntent> renderIntents =
getHwComposer().getRenderIntents(*displayId, colorMode);
creationArgs.hwcColorModes.emplace(colorMode, renderIntents);
}
}
if (displayId) {
getHwComposer().getHdrCapabilities(*displayId, &creationArgs.hdrCapabilities);
creationArgs.supportedPerFrameMetadata =
getHwComposer().getSupportedPerFrameMetadata(*displayId);
}
auto nativeWindowSurface = getFactory().createNativeWindowSurface(producer);
auto nativeWindow = nativeWindowSurface->getNativeWindow();
creationArgs.nativeWindow = nativeWindow;
// Make sure that composition can never be stalled by a virtual display
// consumer that isn't processing buffers fast enough. We have to do this
// here, in case the display is composed entirely by HWC.
if (state.isVirtual()) {
nativeWindow->setSwapInterval(nativeWindow.get(), 0);
}
creationArgs.displayInstallOrientation =
isInternalDisplay ? primaryDisplayOrientation : DisplayState::eOrientationDefault;
// virtual displays are always considered enabled
creationArgs.initialPowerMode = state.isVirtual() ? HWC_POWER_MODE_NORMAL : HWC_POWER_MODE_OFF;
sp<DisplayDevice> display = getFactory().createDisplayDevice(std::move(creationArgs));
if (maxFrameBufferAcquiredBuffers >= 3) {
nativeWindowSurface->preallocateBuffers();
}
ColorMode defaultColorMode = ColorMode::NATIVE;
Dataspace defaultDataSpace = Dataspace::UNKNOWN;
if (display->hasWideColorGamut()) {
defaultColorMode = ColorMode::SRGB;
defaultDataSpace = Dataspace::V0_SRGB;
}
display->getCompositionDisplay()->setColorMode(defaultColorMode, defaultDataSpace,
RenderIntent::COLORIMETRIC);
if (!state.isVirtual()) {
LOG_ALWAYS_FATAL_IF(!displayId);
display->setActiveConfig(getHwComposer().getActiveConfigIndex(*displayId));
}
display->setLayerStack(state.layerStack);
display->setProjection(state.orientation, state.viewport, state.frame);
display->setDisplayName(state.displayName);
return display;
}
void SurfaceFlinger::processDisplayChangesLocked() {
// 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;) {
const ssize_t j = curr.indexOfKey(draw.keyAt(i));
if (j < 0) {
// in drawing state but not in current state
if (const auto display = getDisplayDeviceLocked(draw.keyAt(i))) {
// Save display ID before disconnecting.
const auto displayId = display->getId();
display->disconnect();
if (!display->isVirtual()) {
LOG_ALWAYS_FATAL_IF(!displayId);
dispatchDisplayHotplugEvent(displayId->value, false);
}
}
mDisplays.erase(draw.keyAt(i));
} else {
// this display is in both lists. see if something changed.
const DisplayDeviceState& state(curr[j]);
const wp<IBinder>& displayToken = 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.
if (const auto display = getDisplayDeviceLocked(displayToken)) {
display->disconnect();
}
mDisplays.erase(displayToken);
mDrawingState.displays.removeItemsAt(i);
dc--;
// at this point we must loop to the next item
continue;
}
if (const auto display = getDisplayDeviceLocked(displayToken)) {
if (state.layerStack != draw[i].layerStack) {
display->setLayerStack(state.layerStack);
}
if ((state.orientation != draw[i].orientation) ||
(state.viewport != draw[i].viewport) || (state.frame != draw[i].frame)) {
display->setProjection(state.orientation, state.viewport, state.frame);
}
if (state.width != draw[i].width || state.height != draw[i].height) {
display->setDisplaySize(state.width, state.height);
}
}
}
++i;
}
// 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<compositionengine::DisplaySurface> dispSurface;
sp<IGraphicBufferProducer> producer;
sp<IGraphicBufferProducer> bqProducer;
sp<IGraphicBufferConsumer> bqConsumer;
getFactory().createBufferQueue(&bqProducer, &bqConsumer, false);
std::optional<DisplayId> displayId;
if (state.isVirtual()) {
// 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 != nullptr) {
// Allow VR composer to use virtual displays.
if (mUseHwcVirtualDisplays || getHwComposer().isUsingVrComposer()) {
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);
int intFormat = 0;
status = state.surface->query(NATIVE_WINDOW_FORMAT, &intFormat);
ALOGE_IF(status != NO_ERROR, "Unable to query format (%d)", status);
auto format = static_cast<ui::PixelFormat>(intFormat);
displayId =
getHwComposer().allocateVirtualDisplay(width, height, &format);
}
// TODO: Plumb requested format back up to consumer
sp<VirtualDisplaySurface> vds =
new VirtualDisplaySurface(getHwComposer(), displayId, state.surface,
bqProducer, bqConsumer,
state.displayName);
dispSurface = vds;
producer = vds;
}
} else {
ALOGE_IF(state.surface != nullptr,
"adding a supported display, but rendering "
"surface is provided (%p), ignoring it",
state.surface.get());
displayId = state.displayId;
LOG_ALWAYS_FATAL_IF(!displayId);
dispSurface = new FramebufferSurface(getHwComposer(), *displayId, bqConsumer);
producer = bqProducer;
}
const wp<IBinder>& displayToken = curr.keyAt(i);
if (dispSurface != nullptr) {
mDisplays.emplace(displayToken,
setupNewDisplayDeviceInternal(displayToken, displayId, state,
dispSurface, producer));
if (!state.isVirtual()) {
LOG_ALWAYS_FATAL_IF(!displayId);
dispatchDisplayHotplugEvent(displayId->value, true);
}
}
}
}
}
mDrawingState.displays = mCurrentState.displays;
}
void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags)
{
// Notify all layers of available frames
mCurrentState.traverseInZOrder([](Layer* layer) {
layer->notifyAvailableFrames();
});
/*
* Traversal of the children
* (perform the transaction for each of them if needed)
*/
if ((transactionFlags & eTraversalNeeded) || mTraversalNeededMainThread) {
mCurrentState.traverseInZOrder([&](Layer* layer) {
uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded);
if (!trFlags) return;
const uint32_t flags = layer->doTransaction(0);
if (flags & Layer::eVisibleRegion)
mVisibleRegionsDirty = true;
if (flags & Layer::eInputInfoChanged) {
mInputInfoChanged = true;
}
});
mTraversalNeededMainThread = false;
}
/*
* Perform display own transactions if needed
*/
if (transactionFlags & eDisplayTransactionNeeded) {
processDisplayChangesLocked();
processDisplayHotplugEventsLocked();
}