1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19 #include <dlfcn.h> 20 #include <errno.h> 21 #include <inttypes.h> 22 #include <math.h> 23 #include <stdatomic.h> 24 #include <stdint.h> 25 #include <sys/types.h> 26 27 #include <mutex> 28 29 #include <EGL/egl.h> 30 31 #include <cutils/properties.h> 32 #include <log/log.h> 33 34 #include <binder/IPCThreadState.h> 35 #include <binder/IServiceManager.h> 36 #include <binder/PermissionCache.h> 37 38 #include <ui/DisplayInfo.h> 39 #include <ui/DisplayStatInfo.h> 40 41 #include <gui/BufferQueue.h> 42 #include <gui/GuiConfig.h> 43 #include <gui/IDisplayEventConnection.h> 44 #include <gui/Surface.h> 45 46 #include <ui/GraphicBufferAllocator.h> 47 #include <ui/HdrCapabilities.h> 48 #include <ui/PixelFormat.h> 49 #include <ui/UiConfig.h> 50 51 #include <utils/misc.h> 52 #include <utils/String8.h> 53 #include <utils/String16.h> 54 #include <utils/StopWatch.h> 55 #include <utils/Timers.h> 56 #include <utils/Trace.h> 57 58 #include <private/android_filesystem_config.h> 59 #include <private/gui/SyncFeatures.h> 60 61 #include <set> 62 63 #include "Client.h" 64 #include "clz.h" 65 #include "Colorizer.h" 66 #include "DdmConnection.h" 67 #include "DisplayDevice.h" 68 #include "DispSync.h" 69 #include "EventControlThread.h" 70 #include "EventThread.h" 71 #include "Layer.h" 72 #include "LayerVector.h" 73 #include "LayerDim.h" 74 #include "MonitoredProducer.h" 75 #include "SurfaceFlinger.h" 76 77 #include "DisplayHardware/FramebufferSurface.h" 78 #include "DisplayHardware/HWComposer.h" 79 #include "DisplayHardware/VirtualDisplaySurface.h" 80 81 #include "Effects/Daltonizer.h" 82 83 #include "RenderEngine/RenderEngine.h" 84 #include <cutils/compiler.h> 85 86 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h> 87 #include <configstore/Utils.h> 88 89 #define DISPLAY_COUNT 1 90 91 /* 92 * DEBUG_SCREENSHOTS: set to true to check that screenshots are not all 93 * black pixels. 94 */ 95 #define DEBUG_SCREENSHOTS false 96 97 extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name); 98 99 namespace android { 100 // --------------------------------------------------------------------------- 101 102 using namespace android::hardware::configstore; 103 using namespace android::hardware::configstore::V1_0; 104 105 const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 106 const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 107 const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 108 const String16 sDump("android.permission.DUMP"); 109 110 // --------------------------------------------------------------------------- 111 int64_t SurfaceFlinger::vsyncPhaseOffsetNs; 112 int64_t SurfaceFlinger::sfVsyncPhaseOffsetNs; 113 bool SurfaceFlinger::useContextPriority; 114 int64_t SurfaceFlinger::dispSyncPresentTimeOffset; 115 bool SurfaceFlinger::useHwcForRgbToYuv; 116 uint64_t SurfaceFlinger::maxVirtualDisplaySize; 117 bool SurfaceFlinger::hasSyncFramework; 118 int64_t SurfaceFlinger::maxFrameBufferAcquiredBuffers; 119 120 SurfaceFlinger::SurfaceFlinger() 121 : BnSurfaceComposer(), 122 mTransactionFlags(0), 123 mTransactionPending(false), 124 mAnimTransactionPending(false), 125 mLayersRemoved(false), 126 mLayersAdded(false), 127 mRepaintEverything(0), 128 mRenderEngine(NULL), 129 mBootTime(systemTime()), 130 mVisibleRegionsDirty(false), 131 mHwWorkListDirty(false), 132 mAnimCompositionPending(false), 133 mDebugRegion(0), 134 mDebugDDMS(0), 135 mDebugDisableHWC(0), 136 mDebugDisableTransformHint(0), 137 mDebugInSwapBuffers(0), 138 mLastSwapBufferTime(0), 139 mDebugInTransaction(0), 140 mLastTransactionTime(0), 141 mBootFinished(false), 142 mForceFullDamage(false), 143 mInterceptor(this), 144 mPrimaryDispSync("PrimaryDispSync"), 145 mPrimaryHWVsyncEnabled(false), 146 mHWVsyncAvailable(false), 147 mDaltonize(false), 148 mHasColorMatrix(false), 149 mHasPoweredOff(false), 150 mFrameBuckets(), 151 mTotalTime(0), 152 mLastSwapTime(0), 153 mNumLayers(0) 154 { 155 ALOGI("SurfaceFlinger is starting"); 156 157 vsyncPhaseOffsetNs = getInt64< ISurfaceFlingerConfigs, 158 &ISurfaceFlingerConfigs::vsyncEventPhaseOffsetNs>(1000000); 159 160 sfVsyncPhaseOffsetNs = getInt64< ISurfaceFlingerConfigs, 161 &ISurfaceFlingerConfigs::vsyncSfEventPhaseOffsetNs>(1000000); 162 163 maxVirtualDisplaySize = getUInt64<ISurfaceFlingerConfigs, 164 &ISurfaceFlingerConfigs::maxVirtualDisplaySize>(0); 165 166 hasSyncFramework = getBool< ISurfaceFlingerConfigs, 167 &ISurfaceFlingerConfigs::hasSyncFramework>(true); 168 169 useContextPriority = getBool< ISurfaceFlingerConfigs, 170 &ISurfaceFlingerConfigs::useContextPriority>(false); 171 172 dispSyncPresentTimeOffset = getInt64< ISurfaceFlingerConfigs, 173 &ISurfaceFlingerConfigs::presentTimeOffsetFromVSyncNs>(0); 174 175 useHwcForRgbToYuv = getBool< ISurfaceFlingerConfigs, 176 &ISurfaceFlingerConfigs::useHwcForRGBtoYUV>(false); 177 178 maxFrameBufferAcquiredBuffers = getInt64< ISurfaceFlingerConfigs, 179 &ISurfaceFlingerConfigs::maxFrameBufferAcquiredBuffers>(2); 180 181 char value[PROPERTY_VALUE_MAX]; 182 183 property_get("ro.bq.gpu_to_cpu_unsupported", value, "0"); 184 mGpuToCpuSupported = !atoi(value); 185 186 property_get("debug.sf.showupdates", value, "0"); 187 mDebugRegion = atoi(value); 188 189 property_get("debug.sf.ddms", value, "0"); 190 mDebugDDMS = atoi(value); 191 if (mDebugDDMS) { 192 if (!startDdmConnection()) { 193 // start failed, and DDMS debugging not enabled 194 mDebugDDMS = 0; 195 } 196 } 197 ALOGI_IF(mDebugRegion, "showupdates enabled"); 198 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 199 200 property_get("debug.sf.enable_hwc_vds", value, "0"); 201 mUseHwcVirtualDisplays = atoi(value); 202 ALOGI_IF(!mUseHwcVirtualDisplays, "Enabling HWC virtual displays"); 203 204 property_get("ro.sf.disable_triple_buffer", value, "1"); 205 mLayerTripleBufferingDisabled = atoi(value); 206 ALOGI_IF(mLayerTripleBufferingDisabled, "Disabling Triple Buffering"); 207 } 208 209 void SurfaceFlinger::onFirstRef() 210 { 211 mEventQueue.init(this); 212 } 213 214 SurfaceFlinger::~SurfaceFlinger() 215 { 216 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 217 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 218 eglTerminate(display); 219 } 220 221 void SurfaceFlinger::binderDied(const wp<IBinder>& /* who */) 222 { 223 // the window manager died on us. prepare its eulogy. 224 225 // restore initial conditions (default device unblank, etc) 226 initializeDisplays(); 227 228 // restart the boot-animation 229 startBootAnim(); 230 } 231 232 static sp<ISurfaceComposerClient> initClient(const sp<Client>& client) { 233 status_t err = client->initCheck(); 234 if (err == NO_ERROR) { 235 return client; 236 } 237 return nullptr; 238 } 239 240 sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() { 241 return initClient(new Client(this)); 242 } 243 244 sp<ISurfaceComposerClient> SurfaceFlinger::createScopedConnection( 245 const sp<IGraphicBufferProducer>& gbp) { 246 if (authenticateSurfaceTexture(gbp) == false) { 247 return nullptr; 248 } 249 const auto& layer = (static_cast<MonitoredProducer*>(gbp.get()))->getLayer(); 250 if (layer == nullptr) { 251 return nullptr; 252 } 253 254 return initClient(new Client(this, layer)); 255 } 256 257 sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 258 bool secure) 259 { 260 class DisplayToken : public BBinder { 261 sp<SurfaceFlinger> flinger; 262 virtual ~DisplayToken() { 263 // no more references, this display must be terminated 264 Mutex::Autolock _l(flinger->mStateLock); 265 flinger->mCurrentState.displays.removeItem(this); 266 flinger->setTransactionFlags(eDisplayTransactionNeeded); 267 } 268 public: 269 explicit DisplayToken(const sp<SurfaceFlinger>& flinger) 270 : flinger(flinger) { 271 } 272 }; 273 274 sp<BBinder> token = new DisplayToken(this); 275 276 Mutex::Autolock _l(mStateLock); 277 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL, secure); 278 info.displayName = displayName; 279 mCurrentState.displays.add(token, info); 280 mInterceptor.saveDisplayCreation(info); 281 return token; 282 } 283 284 void SurfaceFlinger::destroyDisplay(const sp<IBinder>& display) { 285 Mutex::Autolock _l(mStateLock); 286 287 ssize_t idx = mCurrentState.displays.indexOfKey(display); 288 if (idx < 0) { 289 ALOGW("destroyDisplay: invalid display token"); 290 return; 291 } 292 293 const DisplayDeviceState& info(mCurrentState.displays.valueAt(idx)); 294 if (!info.isVirtualDisplay()) { 295 ALOGE("destroyDisplay called for non-virtual display"); 296 return; 297 } 298 mInterceptor.saveDisplayDeletion(info.displayId); 299 mCurrentState.displays.removeItemsAt(idx); 300 setTransactionFlags(eDisplayTransactionNeeded); 301 } 302 303 void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { 304 ALOGW_IF(mBuiltinDisplays[type], 305 "Overwriting display token for display type %d", type); 306 mBuiltinDisplays[type] = new BBinder(); 307 // All non-virtual displays are currently considered secure. 308 DisplayDeviceState info(type, true); 309 mCurrentState.displays.add(mBuiltinDisplays[type], info); 310 mInterceptor.saveDisplayCreation(info); 311 } 312 313 sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 314 if (uint32_t(id) >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) { 315 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 316 return NULL; 317 } 318 return mBuiltinDisplays[id]; 319 } 320 321 void SurfaceFlinger::bootFinished() 322 { 323 if (mStartPropertySetThread->join() != NO_ERROR) { 324 ALOGE("Join StartPropertySetThread failed!"); 325 } 326 const nsecs_t now = systemTime(); 327 const nsecs_t duration = now - mBootTime; 328 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 329 mBootFinished = true; 330 331 // wait patiently for the window manager death 332 const String16 name("window"); 333 sp<IBinder> window(defaultServiceManager()->getService(name)); 334 if (window != 0) { 335 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 336 } 337 338 // stop boot animation 339 // formerly we would just kill the process, but we now ask it to exit so it 340 // can choose where to stop the animation. 341 property_set("service.bootanim.exit", "1"); 342 343 const int LOGTAG_SF_STOP_BOOTANIM = 60110; 344 LOG_EVENT_LONG(LOGTAG_SF_STOP_BOOTANIM, 345 ns2ms(systemTime(SYSTEM_TIME_MONOTONIC))); 346 } 347 348 void SurfaceFlinger::deleteTextureAsync(uint32_t texture) { 349 class MessageDestroyGLTexture : public MessageBase { 350 RenderEngine& engine; 351 uint32_t texture; 352 public: 353 MessageDestroyGLTexture(RenderEngine& engine, uint32_t texture) 354 : engine(engine), texture(texture) { 355 } 356 virtual bool handler() { 357 engine.deleteTextures(1, &texture); 358 return true; 359 } 360 }; 361 postMessageAsync(new MessageDestroyGLTexture(getRenderEngine(), texture)); 362 } 363 364 class DispSyncSource : public VSyncSource, private DispSync::Callback { 365 public: 366 DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync, 367 const char* name) : 368 mName(name), 369 mValue(0), 370 mTraceVsync(traceVsync), 371 mVsyncOnLabel(String8::format("VsyncOn-%s", name)), 372 mVsyncEventLabel(String8::format("VSYNC-%s", name)), 373 mDispSync(dispSync), 374 mCallbackMutex(), 375 mCallback(), 376 mVsyncMutex(), 377 mPhaseOffset(phaseOffset), 378 mEnabled(false) {} 379 380 virtual ~DispSyncSource() {} 381 382 virtual void setVSyncEnabled(bool enable) { 383 Mutex::Autolock lock(mVsyncMutex); 384 if (enable) { 385 status_t err = mDispSync->addEventListener(mName, mPhaseOffset, 386 static_cast<DispSync::Callback*>(this)); 387 if (err != NO_ERROR) { 388 ALOGE("error registering vsync callback: %s (%d)", 389 strerror(-err), err); 390 } 391 //ATRACE_INT(mVsyncOnLabel.string(), 1); 392 } else { 393 status_t err = mDispSync->removeEventListener( 394 static_cast<DispSync::Callback*>(this)); 395 if (err != NO_ERROR) { 396 ALOGE("error unregistering vsync callback: %s (%d)", 397 strerror(-err), err); 398 } 399 //ATRACE_INT(mVsyncOnLabel.string(), 0); 400 } 401 mEnabled = enable; 402 } 403 404 virtual void setCallback(const sp<VSyncSource::Callback>& callback) { 405 Mutex::Autolock lock(mCallbackMutex); 406 mCallback = callback; 407 } 408 409 virtual void setPhaseOffset(nsecs_t phaseOffset) { 410 Mutex::Autolock lock(mVsyncMutex); 411 412 // Normalize phaseOffset to [0, period) 413 auto period = mDispSync->getPeriod(); 414 phaseOffset %= period; 415 if (phaseOffset < 0) { 416 // If we're here, then phaseOffset is in (-period, 0). After this 417 // operation, it will be in (0, period) 418 phaseOffset += period; 419 } 420 mPhaseOffset = phaseOffset; 421 422 // If we're not enabled, we don't need to mess with the listeners 423 if (!mEnabled) { 424 return; 425 } 426 427 // Remove the listener with the old offset 428 status_t err = mDispSync->removeEventListener( 429 static_cast<DispSync::Callback*>(this)); 430 if (err != NO_ERROR) { 431 ALOGE("error unregistering vsync callback: %s (%d)", 432 strerror(-err), err); 433 } 434 435 // Add a listener with the new offset 436 err = mDispSync->addEventListener(mName, mPhaseOffset, 437 static_cast<DispSync::Callback*>(this)); 438 if (err != NO_ERROR) { 439 ALOGE("error registering vsync callback: %s (%d)", 440 strerror(-err), err); 441 } 442 } 443 444 private: 445 virtual void onDispSyncEvent(nsecs_t when) { 446 sp<VSyncSource::Callback> callback; 447 { 448 Mutex::Autolock lock(mCallbackMutex); 449 callback = mCallback; 450 451 if (mTraceVsync) { 452 mValue = (mValue + 1) % 2; 453 ATRACE_INT(mVsyncEventLabel.string(), mValue); 454 } 455 } 456 457 if (callback != NULL) { 458 callback->onVSyncEvent(when); 459 } 460 } 461 462 const char* const mName; 463 464 int mValue; 465 466 const bool mTraceVsync; 467 const String8 mVsyncOnLabel; 468 const String8 mVsyncEventLabel; 469 470 DispSync* mDispSync; 471 472 Mutex mCallbackMutex; // Protects the following 473 sp<VSyncSource::Callback> mCallback; 474 475 Mutex mVsyncMutex; // Protects the following 476 nsecs_t mPhaseOffset; 477 bool mEnabled; 478 }; 479 480 class InjectVSyncSource : public VSyncSource { 481 public: 482 InjectVSyncSource() {} 483 484 virtual ~InjectVSyncSource() {} 485 486 virtual void setCallback(const sp<VSyncSource::Callback>& callback) { 487 std::lock_guard<std::mutex> lock(mCallbackMutex); 488 mCallback = callback; 489 } 490 491 virtual void onInjectSyncEvent(nsecs_t when) { 492 std::lock_guard<std::mutex> lock(mCallbackMutex); 493 mCallback->onVSyncEvent(when); 494 } 495 496 virtual void setVSyncEnabled(bool) {} 497 virtual void setPhaseOffset(nsecs_t) {} 498 499 private: 500 std::mutex mCallbackMutex; // Protects the following 501 sp<VSyncSource::Callback> mCallback; 502 }; 503 504 // Do not call property_set on main thread which will be blocked by init 505 // Use StartPropertySetThread instead. 506 void SurfaceFlinger::init() { 507 ALOGI( "SurfaceFlinger's main thread ready to run. " 508 "Initializing graphics H/W..."); 509 510 Mutex::Autolock _l(mStateLock); 511 512 // initialize EGL for the default display 513 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 514 eglInitialize(mEGLDisplay, NULL, NULL); 515 516 // start the EventThread 517 sp<VSyncSource> vsyncSrc = new DispSyncSource(&mPrimaryDispSync, 518 vsyncPhaseOffsetNs, true, "app"); 519 mEventThread = new EventThread(vsyncSrc, *this, false); 520 sp<VSyncSource> sfVsyncSrc = new DispSyncSource(&mPrimaryDispSync, 521 sfVsyncPhaseOffsetNs, true, "sf"); 522 mSFEventThread = new EventThread(sfVsyncSrc, *this, true); 523 mEventQueue.setEventThread(mSFEventThread); 524 525 // set EventThread and SFEventThread to SCHED_FIFO to minimize jitter 526 struct sched_param param = {0}; 527 param.sched_priority = 2; 528 if (sched_setscheduler(mSFEventThread->getTid(), SCHED_FIFO, ¶m) != 0) { 529 ALOGE("Couldn't set SCHED_FIFO for SFEventThread"); 530 } 531 if (sched_setscheduler(mEventThread->getTid(), SCHED_FIFO, ¶m) != 0) { 532 ALOGE("Couldn't set SCHED_FIFO for EventThread"); 533 } 534 535 // Initialize the H/W composer object. There may or may not be an 536 // actual hardware composer underneath. 537 mHwc.reset(new HWComposer(this, 538 *static_cast<HWComposer::EventHandler *>(this))); 539 540 // get a RenderEngine for the given display / config (can't fail) 541 mRenderEngine = RenderEngine::create(mEGLDisplay, 542 mHwc->getVisualID(), 0); 543 544 // retrieve the EGL context that was selected/created 545 mEGLContext = mRenderEngine->getEGLContext(); 546 547 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 548 "couldn't create EGLContext"); 549 550 // initialize our non-virtual displays 551 for (size_t i=0 ; i<DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES ; i++) { 552 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 553 // set-up the displays that are already connected 554 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 555 // All non-virtual displays are currently considered secure. 556 bool isSecure = true; 557 createBuiltinDisplayLocked(type); 558 wp<IBinder> token = mBuiltinDisplays[i]; 559 560 sp<IGraphicBufferProducer> producer; 561 sp<IGraphicBufferConsumer> consumer; 562 BufferQueue::createBufferQueue(&producer, &consumer); 563 564 sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc, i, 565 consumer); 566 int32_t hwcId = allocateHwcDisplayId(type); 567 sp<DisplayDevice> hw = new DisplayDevice(this, 568 type, hwcId, mHwc->getFormat(hwcId), isSecure, token, 569 fbs, producer, 570 mRenderEngine->getEGLConfig(), false); 571 if (i > DisplayDevice::DISPLAY_PRIMARY) { 572 // FIXME: currently we don't get blank/unblank requests 573 // for displays other than the main display, so we always 574 // assume a connected display is unblanked. 575 ALOGD("marking display %zu as acquired/unblanked", i); 576 hw->setPowerMode(HWC_POWER_MODE_NORMAL); 577 } 578 mDisplays.add(token, hw); 579 } 580 } 581 582 // make the GLContext current so that we can create textures when creating Layers 583 // (which may happens before we render something) 584 getDefaultDisplayDeviceLocked()->makeCurrent(mEGLDisplay, mEGLContext); 585 586 mEventControlThread = new EventControlThread(this); 587 mEventControlThread->run("EventControl", PRIORITY_URGENT_DISPLAY); 588 589 // set a fake vsync period if there is no HWComposer 590 if (mHwc->initCheck() != NO_ERROR) { 591 mPrimaryDispSync.setPeriod(16666667); 592 } 593 594 // initialize our drawing state 595 mDrawingState = mCurrentState; 596 597 // set initial conditions (e.g. unblank default device) 598 initializeDisplays(); 599 600 mRenderEngine->primeCache(); 601 602 // Inform native graphics APIs that the present timestamp is NOT supported: 603 mStartPropertySetThread = new StartPropertySetThread(false); 604 if (mStartPropertySetThread->Start() != NO_ERROR) { 605 ALOGE("Run StartPropertySetThread failed!"); 606 } 607 608 ALOGV("Done initializing"); 609 } 610 611 int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 612 return (uint32_t(type) < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) ? 613 type : mHwc->allocateDisplayId(); 614 } 615 616 void SurfaceFlinger::startBootAnim() { 617 // Start boot animation service by setting a property mailbox 618 // if property setting thread is already running, Start() will be just a NOP 619 mStartPropertySetThread->Start(); 620 // Wait until property was set 621 if (mStartPropertySetThread->join() != NO_ERROR) { 622 ALOGE("Join StartPropertySetThread failed!"); 623 } 624 } 625 626 size_t SurfaceFlinger::getMaxTextureSize() const { 627 return mRenderEngine->getMaxTextureSize(); 628 } 629 630 size_t SurfaceFlinger::getMaxViewportDims() const { 631 return mRenderEngine->getMaxViewportDims(); 632 } 633 634 // ---------------------------------------------------------------------------- 635 636 bool SurfaceFlinger::authenticateSurfaceTexture( 637 const sp<IGraphicBufferProducer>& bufferProducer) const { 638 Mutex::Autolock _l(mStateLock); 639 return authenticateSurfaceTextureLocked(bufferProducer); 640 } 641 642 bool SurfaceFlinger::authenticateSurfaceTextureLocked( 643 const sp<IGraphicBufferProducer>& bufferProducer) const { 644 sp<IBinder> surfaceTextureBinder(IInterface::asBinder(bufferProducer)); 645 return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0; 646 } 647 648 status_t SurfaceFlinger::getSupportedFrameTimestamps( 649 std::vector<FrameEvent>* outSupported) const { 650 *outSupported = { 651 FrameEvent::REQUESTED_PRESENT, 652 FrameEvent::ACQUIRE, 653 FrameEvent::LATCH, 654 FrameEvent::FIRST_REFRESH_START, 655 FrameEvent::LAST_REFRESH_START, 656 FrameEvent::GPU_COMPOSITION_DONE, 657 FrameEvent::DEQUEUE_READY, 658 FrameEvent::RELEASE, 659 }; 660 return NO_ERROR; 661 } 662 663 status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& display, 664 Vector<DisplayInfo>* configs) { 665 if ((configs == NULL) || (display.get() == NULL)) { 666 return BAD_VALUE; 667 } 668 669 int32_t type = getDisplayType(display); 670 if (type < 0) return type; 671 672 // TODO: Not sure if display density should handled by SF any longer 673 class Density { 674 static int getDensityFromProperty(char const* propName) { 675 char property[PROPERTY_VALUE_MAX]; 676 int density = 0; 677 if (property_get(propName, property, NULL) > 0) { 678 density = atoi(property); 679 } 680 return density; 681 } 682 public: 683 static int getEmuDensity() { 684 return getDensityFromProperty("qemu.sf.lcd_density"); } 685 static int getBuildDensity() { 686 return getDensityFromProperty("ro.sf.lcd_density"); } 687 }; 688 689 configs->clear(); 690 691 const Vector<HWComposer::DisplayConfig>& hwConfigs = 692 getHwComposer().getConfigs(type); 693 for (size_t c = 0; c < hwConfigs.size(); ++c) { 694 const HWComposer::DisplayConfig& hwConfig = hwConfigs[c]; 695 DisplayInfo info = DisplayInfo(); 696 697 float xdpi = hwConfig.xdpi; 698 float ydpi = hwConfig.ydpi; 699 700 if (type == DisplayDevice::DISPLAY_PRIMARY) { 701 // The density of the device is provided by a build property 702 float density = Density::getBuildDensity() / 160.0f; 703 if (density == 0) { 704 // the build doesn't provide a density -- this is wrong! 705 // use xdpi instead 706 ALOGE("ro.sf.lcd_density must be defined as a build property"); 707 density = xdpi / 160.0f; 708 } 709 if (Density::getEmuDensity()) { 710 // if "qemu.sf.lcd_density" is specified, it overrides everything 711 xdpi = ydpi = density = Density::getEmuDensity(); 712 density /= 160.0f; 713 } 714 info.density = density; 715 716 // TODO: this needs to go away (currently needed only by webkit) 717 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 718 info.orientation = hw->getOrientation(); 719 } else { 720 // TODO: where should this value come from? 721 static const int TV_DENSITY = 213; 722 info.density = TV_DENSITY / 160.0f; 723 info.orientation = 0; 724 } 725 726 info.w = hwConfig.width; 727 info.h = hwConfig.height; 728 info.xdpi = xdpi; 729 info.ydpi = ydpi; 730 info.fps = float(1e9 / hwConfig.refresh); 731 info.appVsyncOffset = vsyncPhaseOffsetNs; 732 733 // This is how far in advance a buffer must be queued for 734 // presentation at a given time. If you want a buffer to appear 735 // on the screen at time N, you must submit the buffer before 736 // (N - presentationDeadline). 737 // 738 // Normally it's one full refresh period (to give SF a chance to 739 // latch the buffer), but this can be reduced by configuring a 740 // DispSync offset. Any additional delays introduced by the hardware 741 // composer or panel must be accounted for here. 742 // 743 // We add an additional 1ms to allow for processing time and 744 // differences between the ideal and actual refresh rate. 745 info.presentationDeadline = 746 hwConfig.refresh - sfVsyncPhaseOffsetNs + 1000000; 747 748 // All non-virtual displays are currently considered secure. 749 info.secure = true; 750 751 configs->push_back(info); 752 } 753 754 return NO_ERROR; 755 } 756 757 status_t SurfaceFlinger::getDisplayStats(const sp<IBinder>& /* display */, 758 DisplayStatInfo* stats) { 759 if (stats == NULL) { 760 return BAD_VALUE; 761 } 762 763 // FIXME for now we always return stats for the primary display 764 memset(stats, 0, sizeof(*stats)); 765 stats->vsyncTime = mPrimaryDispSync.computeNextRefresh(0); 766 stats->vsyncPeriod = mPrimaryDispSync.getPeriod(); 767 return NO_ERROR; 768 } 769 770 int SurfaceFlinger::getActiveConfig(const sp<IBinder>& display) { 771 sp<const DisplayDevice> device(getDisplayDevice(display)); 772 if (device != NULL) { 773 return device->getActiveConfig(); 774 } 775 return BAD_VALUE; 776 } 777 778 void SurfaceFlinger::setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode) { 779 ALOGD("Set active config mode=%d, type=%d flinger=%p", mode, hw->getDisplayType(), 780 this); 781 int32_t type = hw->getDisplayType(); 782 int currentMode = hw->getActiveConfig(); 783 784 if (mode == currentMode) { 785 ALOGD("Screen type=%d is already mode=%d", hw->getDisplayType(), mode); 786 return; 787 } 788 789 if (type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) { 790 ALOGW("Trying to set config for virtual display"); 791 return; 792 } 793 794 hw->setActiveConfig(mode); 795 getHwComposer().setActiveConfig(type, mode); 796 } 797 798 status_t SurfaceFlinger::setActiveConfig(const sp<IBinder>& display, int mode) { 799 class MessageSetActiveConfig: public MessageBase { 800 SurfaceFlinger& mFlinger; 801 sp<IBinder> mDisplay; 802 int mMode; 803 public: 804 MessageSetActiveConfig(SurfaceFlinger& flinger, const sp<IBinder>& disp, 805 int mode) : 806 mFlinger(flinger), mDisplay(disp) { mMode = mode; } 807 virtual bool handler() { 808 Vector<DisplayInfo> configs; 809 mFlinger.getDisplayConfigs(mDisplay, &configs); 810 if (mMode < 0 || mMode >= static_cast<int>(configs.size())) { 811 ALOGE("Attempt to set active config = %d for display with %zu configs", 812 mMode, configs.size()); 813 } 814 sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 815 if (hw == NULL) { 816 ALOGE("Attempt to set active config = %d for null display %p", 817 mMode, mDisplay.get()); 818 } else if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) { 819 ALOGW("Attempt to set active config = %d for virtual display", 820 mMode); 821 } else { 822 mFlinger.setActiveConfigInternal(hw, mMode); 823 } 824 return true; 825 } 826 }; 827 sp<MessageBase> msg = new MessageSetActiveConfig(*this, display, mode); 828 postMessageSync(msg); 829 return NO_ERROR; 830 } 831 832 status_t SurfaceFlinger::getDisplayColorModes(const sp<IBinder>& display, 833 Vector<android_color_mode_t>* outColorModes) { 834 if (outColorModes == nullptr || display.get() == nullptr) { 835 return BAD_VALUE; 836 } 837 838 int32_t type = getDisplayType(display); 839 if (type < 0) return type; 840 841 std::set<android_color_mode_t> colorModes; 842 for (const HWComposer::DisplayConfig& hwConfig : getHwComposer().getConfigs(type)) { 843 colorModes.insert(hwConfig.colorMode); 844 } 845 846 outColorModes->clear(); 847 std::copy(colorModes.cbegin(), colorModes.cend(), std::back_inserter(*outColorModes)); 848 849 return NO_ERROR; 850 } 851 852 android_color_mode_t SurfaceFlinger::getActiveColorMode(const sp<IBinder>& display) { 853 if (display.get() == nullptr) return static_cast<android_color_mode_t>(BAD_VALUE); 854 855 int32_t type = getDisplayType(display); 856 if (type < 0) return static_cast<android_color_mode_t>(type); 857 858 return getHwComposer().getColorMode(type); 859 } 860 861 status_t SurfaceFlinger::setActiveColorMode(const sp<IBinder>& display, 862 android_color_mode_t colorMode) { 863 if (display.get() == nullptr || colorMode < 0) { 864 return BAD_VALUE; 865 } 866 867 int32_t type = getDisplayType(display); 868 if (type < 0) return type; 869 const Vector<HWComposer::DisplayConfig>& hwConfigs = getHwComposer().getConfigs(type); 870 HWComposer::DisplayConfig desiredConfig = hwConfigs[getHwComposer().getCurrentConfig(type)]; 871 desiredConfig.colorMode = colorMode; 872 for (size_t c = 0; c < hwConfigs.size(); ++c) { 873 const HWComposer::DisplayConfig config = hwConfigs[c]; 874 if (config == desiredConfig) { 875 return setActiveConfig(display, c); 876 } 877 } 878 return BAD_VALUE; 879 } 880 881 status_t SurfaceFlinger::clearAnimationFrameStats() { 882 Mutex::Autolock _l(mStateLock); 883 mAnimFrameTracker.clearStats(); 884 return NO_ERROR; 885 } 886 887 status_t SurfaceFlinger::getAnimationFrameStats(FrameStats* outStats) const { 888 Mutex::Autolock _l(mStateLock); 889 mAnimFrameTracker.getStats(outStats); 890 return NO_ERROR; 891 } 892 893 status_t SurfaceFlinger::getHdrCapabilities(const sp<IBinder>& /*display*/, 894 HdrCapabilities* outCapabilities) const { 895 // HWC1 does not provide HDR capabilities 896 *outCapabilities = HdrCapabilities(); 897 return NO_ERROR; 898 } 899 900 status_t SurfaceFlinger::enableVSyncInjections(bool enable) { 901 if (enable == mInjectVSyncs) { 902 return NO_ERROR; 903 } 904 905 if (enable) { 906 mInjectVSyncs = enable; 907 ALOGV("VSync Injections enabled"); 908 if (mVSyncInjector.get() == nullptr) { 909 mVSyncInjector = new InjectVSyncSource(); 910 mInjectorEventThread = new EventThread(mVSyncInjector, *this, false); 911 } 912 mEventQueue.setEventThread(mInjectorEventThread); 913 } else { 914 mInjectVSyncs = enable; 915 ALOGV("VSync Injections disabled"); 916 mEventQueue.setEventThread(mSFEventThread); 917 mVSyncInjector.clear(); 918 } 919 return NO_ERROR; 920 } 921 922 status_t SurfaceFlinger::injectVSync(nsecs_t when) { 923 if (!mInjectVSyncs) { 924 ALOGE("VSync Injections not enabled"); 925 return BAD_VALUE; 926 } 927 if (mInjectVSyncs && mInjectorEventThread.get() != nullptr) { 928 ALOGV("Injecting VSync inside SurfaceFlinger"); 929 mVSyncInjector->onInjectSyncEvent(when); 930 } 931 return NO_ERROR; 932 } 933 934 // ---------------------------------------------------------------------------- 935 936 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection( 937 ISurfaceComposer::VsyncSource vsyncSource) { 938 if (vsyncSource == eVsyncSourceSurfaceFlinger) { 939 return mSFEventThread->createEventConnection(); 940 } else { 941 return mEventThread->createEventConnection(); 942 } 943 } 944 945 // ---------------------------------------------------------------------------- 946 947 void SurfaceFlinger::waitForEvent() { 948 mEventQueue.waitMessage(); 949 } 950 951 void SurfaceFlinger::signalTransaction() { 952 mEventQueue.invalidate(); 953 } 954 955 void SurfaceFlinger::signalLayerUpdate() { 956 mEventQueue.invalidate(); 957 } 958 959 void SurfaceFlinger::signalRefresh() { 960 mEventQueue.refresh(); 961 } 962 963 status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 964 nsecs_t reltime, uint32_t /* flags */) { 965 return mEventQueue.postMessage(msg, reltime); 966 } 967 968 status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 969 nsecs_t reltime, uint32_t /* flags */) { 970 status_t res = mEventQueue.postMessage(msg, reltime); 971 if (res == NO_ERROR) { 972 msg->wait(); 973 } 974 return res; 975 } 976 977 void SurfaceFlinger::run() { 978 do { 979 waitForEvent(); 980 } while (true); 981 } 982 983 void SurfaceFlinger::enableHardwareVsync() { 984 Mutex::Autolock _l(mHWVsyncLock); 985 if (!mPrimaryHWVsyncEnabled && mHWVsyncAvailable) { 986 mPrimaryDispSync.beginResync(); 987 //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, true); 988 mEventControlThread->setVsyncEnabled(true); 989 mPrimaryHWVsyncEnabled = true; 990 } 991 } 992 993 void SurfaceFlinger::resyncToHardwareVsync(bool makeAvailable) { 994 Mutex::Autolock _l(mHWVsyncLock); 995 996 if (makeAvailable) { 997 mHWVsyncAvailable = true; 998 } else if (!mHWVsyncAvailable) { 999 // Hardware vsync is not currently available, so abort the resync 1000 // attempt for now 1001 return; 1002 } 1003 1004 const nsecs_t period = 1005 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 1006 1007 mPrimaryDispSync.reset(); 1008 mPrimaryDispSync.setPeriod(period); 1009 1010 if (!mPrimaryHWVsyncEnabled) { 1011 mPrimaryDispSync.beginResync(); 1012 //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, true); 1013 mEventControlThread->setVsyncEnabled(true); 1014 mPrimaryHWVsyncEnabled = true; 1015 } 1016 } 1017 1018 void SurfaceFlinger::disableHardwareVsync(bool makeUnavailable) { 1019 Mutex::Autolock _l(mHWVsyncLock); 1020 if (mPrimaryHWVsyncEnabled) { 1021 //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, false); 1022 mEventControlThread->setVsyncEnabled(false); 1023 mPrimaryDispSync.endResync(); 1024 mPrimaryHWVsyncEnabled = false; 1025 } 1026 if (makeUnavailable) { 1027 mHWVsyncAvailable = false; 1028 } 1029 } 1030 1031 void SurfaceFlinger::resyncWithRateLimit() { 1032 static constexpr nsecs_t kIgnoreDelay = ms2ns(500); 1033 if (systemTime() - mLastSwapTime > kIgnoreDelay) { 1034 resyncToHardwareVsync(false); 1035 } 1036 } 1037 1038 void SurfaceFlinger::onVSyncReceived(HWComposer* /*composer*/, int type, 1039 nsecs_t timestamp) { 1040 bool needsHwVsync = false; 1041 1042 { // Scope for the lock 1043 Mutex::Autolock _l(mHWVsyncLock); 1044 if (type == 0 && mPrimaryHWVsyncEnabled) { 1045 needsHwVsync = mPrimaryDispSync.addResyncSample(timestamp); 1046 } 1047 } 1048 1049 if (needsHwVsync) { 1050 enableHardwareVsync(); 1051 } else { 1052 disableHardwareVsync(false); 1053 } 1054 } 1055 1056 void SurfaceFlinger::getCompositorTiming(CompositorTiming* compositorTiming) { 1057 std::lock_guard<std::mutex> lock(mCompositorTimingLock); 1058 *compositorTiming = mCompositorTiming; 1059 } 1060 1061 void SurfaceFlinger::onHotplugReceived(HWComposer* /*composer*/, int type, bool connected) { 1062 if (mEventThread == NULL) { 1063 // This is a temporary workaround for b/7145521. A non-null pointer 1064 // does not mean EventThread has finished initializing, so this 1065 // is not a correct fix. 1066 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 1067 return; 1068 } 1069 1070 if (uint32_t(type) < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) { 1071 Mutex::Autolock _l(mStateLock); 1072 if (connected) { 1073 createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); 1074 } else { 1075 mCurrentState.displays.removeItem(mBuiltinDisplays[type]); 1076 mBuiltinDisplays[type].clear(); 1077 } 1078 setTransactionFlags(eDisplayTransactionNeeded); 1079 1080 // Defer EventThread notification until SF has updated mDisplays. 1081 } 1082 } 1083 1084 void SurfaceFlinger::onInvalidateReceived(HWComposer* /*composer*/) { 1085 repaintEverything(); 1086 } 1087 1088 void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 1089 ATRACE_CALL(); 1090 getHwComposer().eventControl(disp, event, enabled); 1091 } 1092 1093 void SurfaceFlinger::onMessageReceived(int32_t what) { 1094 ATRACE_CALL(); 1095 switch (what) { 1096 case MessageQueue::INVALIDATE: { 1097 bool refreshNeeded = handleMessageTransaction(); 1098 refreshNeeded |= handleMessageInvalidate(); 1099 refreshNeeded |= mRepaintEverything; 1100 if (refreshNeeded) { 1101 // Signal a refresh if a transaction modified the window state, 1102 // a new buffer was latched, or if HWC has requested a full 1103 // repaint 1104 signalRefresh(); 1105 } 1106 break; 1107 } 1108 case MessageQueue::REFRESH: { 1109 handleMessageRefresh(); 1110 break; 1111 } 1112 } 1113 } 1114 1115 bool SurfaceFlinger::handleMessageTransaction() { 1116 uint32_t transactionFlags = peekTransactionFlags(); 1117 if (transactionFlags) { 1118 handleTransaction(transactionFlags); 1119 return true; 1120 } 1121 return false; 1122 } 1123 1124 bool SurfaceFlinger::handleMessageInvalidate() { 1125 ATRACE_CALL(); 1126 return handlePageFlip(); 1127 } 1128 1129 void SurfaceFlinger::handleMessageRefresh() { 1130 ATRACE_CALL(); 1131 1132 nsecs_t refreshStartTime = systemTime(SYSTEM_TIME_MONOTONIC); 1133 1134 preComposition(refreshStartTime); 1135 rebuildLayerStacks(); 1136 setUpHWComposer(); 1137 doDebugFlashRegions(); 1138 doComposition(); 1139 postComposition(refreshStartTime); 1140 } 1141 1142 void SurfaceFlinger::doDebugFlashRegions() 1143 { 1144 // is debugging enabled 1145 if (CC_LIKELY(!mDebugRegion)) 1146 return; 1147 1148 const bool repaintEverything = mRepaintEverything; 1149 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1150 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1151 if (hw->isDisplayOn()) { 1152 // transform the dirty region into this screen's coordinate space 1153 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 1154 if (!dirtyRegion.isEmpty()) { 1155 // redraw the whole screen 1156 doComposeSurfaces(hw, Region(hw->bounds())); 1157 1158 // and draw the dirty region 1159 const int32_t height = hw->getHeight(); 1160 RenderEngine& engine(getRenderEngine()); 1161 engine.fillRegionWithColor(dirtyRegion, height, 1, 0, 1, 1); 1162 1163 hw->compositionComplete(); 1164 hw->swapBuffers(getHwComposer()); 1165 } 1166 } 1167 } 1168 1169 postFramebuffer(); 1170 1171 if (mDebugRegion > 1) { 1172 usleep(mDebugRegion * 1000); 1173 } 1174 1175 HWComposer& hwc(getHwComposer()); 1176 if (hwc.initCheck() == NO_ERROR) { 1177 status_t err = hwc.prepare(); 1178 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 1179 } 1180 } 1181 1182 void SurfaceFlinger::preComposition(nsecs_t refreshStartTime) 1183 { 1184 bool needExtraInvalidate = false; 1185 mDrawingState.traverseInZOrder([&](Layer* layer) { 1186 if (layer->onPreComposition(refreshStartTime)) { 1187 needExtraInvalidate = true; 1188 } 1189 }); 1190 1191 if (needExtraInvalidate) { 1192 signalLayerUpdate(); 1193 } 1194 } 1195 1196 void SurfaceFlinger::updateCompositorTiming( 1197 nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime, 1198 std::shared_ptr<FenceTime>& presentFenceTime) { 1199 // Update queue of past composite+present times and determine the 1200 // most recently known composite to present latency. 1201 mCompositePresentTimes.push({compositeTime, presentFenceTime}); 1202 nsecs_t compositeToPresentLatency = -1; 1203 while (!mCompositePresentTimes.empty()) { 1204 CompositePresentTime& cpt = mCompositePresentTimes.front(); 1205 // Cached values should have been updated before calling this method, 1206 // which helps avoid duplicate syscalls. 1207 nsecs_t displayTime = cpt.display->getCachedSignalTime(); 1208 if (displayTime == Fence::SIGNAL_TIME_PENDING) { 1209 break; 1210 } 1211 compositeToPresentLatency = displayTime - cpt.composite; 1212 mCompositePresentTimes.pop(); 1213 } 1214 1215 // Don't let mCompositePresentTimes grow unbounded, just in case. 1216 while (mCompositePresentTimes.size() > 16) { 1217 mCompositePresentTimes.pop(); 1218 } 1219 1220 setCompositorTimingSnapped( 1221 vsyncPhase, vsyncInterval, compositeToPresentLatency); 1222 } 1223 1224 void SurfaceFlinger::setCompositorTimingSnapped(nsecs_t vsyncPhase, 1225 nsecs_t vsyncInterval, nsecs_t compositeToPresentLatency) { 1226 // Integer division and modulo round toward 0 not -inf, so we need to 1227 // treat negative and positive offsets differently. 1228 nsecs_t idealLatency = (sfVsyncPhaseOffsetNs > 0) ? 1229 (vsyncInterval - (sfVsyncPhaseOffsetNs % vsyncInterval)) : 1230 ((-sfVsyncPhaseOffsetNs) % vsyncInterval); 1231 1232 // Just in case sfVsyncPhaseOffsetNs == -vsyncInterval. 1233 if (idealLatency <= 0) { 1234 idealLatency = vsyncInterval; 1235 } 1236 1237 // Snap the latency to a value that removes scheduling jitter from the 1238 // composition and present times, which often have >1ms of jitter. 1239 // Reducing jitter is important if an app attempts to extrapolate 1240 // something (such as user input) to an accurate diasplay time. 1241 // Snapping also allows an app to precisely calculate sfVsyncPhaseOffsetNs 1242 // with (presentLatency % interval). 1243 nsecs_t bias = vsyncInterval / 2; 1244 int64_t extraVsyncs = 1245 (compositeToPresentLatency - idealLatency + bias) / vsyncInterval; 1246 nsecs_t snappedCompositeToPresentLatency = (extraVsyncs > 0) ? 1247 idealLatency + (extraVsyncs * vsyncInterval) : idealLatency; 1248 1249 std::lock_guard<std::mutex> lock(mCompositorTimingLock); 1250 mCompositorTiming.deadline = vsyncPhase - idealLatency; 1251 mCompositorTiming.interval = vsyncInterval; 1252 mCompositorTiming.presentLatency = snappedCompositeToPresentLatency; 1253 } 1254 1255 void SurfaceFlinger::postComposition(nsecs_t refreshStartTime) 1256 { 1257 const HWComposer& hwc = getHwComposer(); 1258 const sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1259 1260 mGlCompositionDoneTimeline.updateSignalTimes(); 1261 std::shared_ptr<FenceTime> glCompositionDoneFenceTime; 1262 if (getHwComposer().hasGlesComposition(hw->getHwcDisplayId())) { 1263 glCompositionDoneFenceTime = 1264 std::make_shared<FenceTime>(hw->getClientTargetAcquireFence()); 1265 mGlCompositionDoneTimeline.push(glCompositionDoneFenceTime); 1266 } else { 1267 glCompositionDoneFenceTime = FenceTime::NO_FENCE; 1268 } 1269 1270 mDisplayTimeline.updateSignalTimes(); 1271 sp<Fence> retireFence = mHwc->getDisplayFence(HWC_DISPLAY_PRIMARY); 1272 auto retireFenceTime = std::make_shared<FenceTime>(retireFence); 1273 mDisplayTimeline.push(retireFenceTime); 1274 1275 nsecs_t vsyncPhase = mPrimaryDispSync.computeNextRefresh(0); 1276 nsecs_t vsyncInterval = mPrimaryDispSync.getPeriod(); 1277 1278 // We use the refreshStartTime which might be sampled a little later than 1279 // when we started doing work for this frame, but that should be okay 1280 // since updateCompositorTiming has snapping logic. 1281 updateCompositorTiming( 1282 vsyncPhase, vsyncInterval, refreshStartTime, retireFenceTime); 1283 CompositorTiming compositorTiming; 1284 { 1285 std::lock_guard<std::mutex> lock(mCompositorTimingLock); 1286 compositorTiming = mCompositorTiming; 1287 } 1288 1289 mDrawingState.traverseInZOrder([&](Layer* layer) { 1290 // TODO(brianderson): The retire fence is incorrectly passed in as the 1291 // present fence. Fix this if this file lives on. 1292 bool frameLatched = layer->onPostComposition(glCompositionDoneFenceTime, 1293 retireFenceTime, compositorTiming); 1294 if (frameLatched) { 1295 recordBufferingStats(layer->getName().string(), 1296 layer->getOccupancyHistory(false)); 1297 } 1298 }); 1299 1300 if (retireFence->isValid()) { 1301 if (mPrimaryDispSync.addPresentFence(retireFenceTime)) { 1302 enableHardwareVsync(); 1303 } else { 1304 disableHardwareVsync(false); 1305 } 1306 } 1307 1308 if (!hasSyncFramework) { 1309 if (hw->isDisplayOn()) { 1310 enableHardwareVsync(); 1311 } 1312 } 1313 1314 if (mAnimCompositionPending) { 1315 mAnimCompositionPending = false; 1316 1317 if (retireFenceTime->isValid()) { 1318 mAnimFrameTracker.setActualPresentFence(std::move(retireFenceTime)); 1319 } else { 1320 // The HWC doesn't support present fences, so use the refresh 1321 // timestamp instead. 1322 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 1323 mAnimFrameTracker.setActualPresentTime(presentTime); 1324 } 1325 mAnimFrameTracker.advanceFrame(); 1326 } 1327 1328 if (hw->getPowerMode() == HWC_POWER_MODE_OFF) { 1329 return; 1330 } 1331 1332 nsecs_t currentTime = systemTime(); 1333 if (mHasPoweredOff) { 1334 mHasPoweredOff = false; 1335 } else { 1336 nsecs_t period = mPrimaryDispSync.getPeriod(); 1337 nsecs_t elapsedTime = currentTime - mLastSwapTime; 1338 size_t numPeriods = static_cast<size_t>(elapsedTime / period); 1339 if (numPeriods < NUM_BUCKETS - 1) { 1340 mFrameBuckets[numPeriods] += elapsedTime; 1341 } else { 1342 mFrameBuckets[NUM_BUCKETS - 1] += elapsedTime; 1343 } 1344 mTotalTime += elapsedTime; 1345 } 1346 mLastSwapTime = currentTime; 1347 } 1348 1349 void SurfaceFlinger::rebuildLayerStacks() { 1350 // rebuild the visible layer list per screen 1351 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 1352 ATRACE_CALL(); 1353 mVisibleRegionsDirty = false; 1354 invalidateHwcGeometry(); 1355 1356 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1357 Region opaqueRegion; 1358 Region dirtyRegion; 1359 Vector< sp<Layer> > layersSortedByZ; 1360 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1361 const Transform& tr(hw->getTransform()); 1362 const Rect bounds(hw->getBounds()); 1363 if (hw->isDisplayOn()) { 1364 computeVisibleRegions(hw, dirtyRegion, opaqueRegion); 1365 1366 mDrawingState.traverseInZOrder([&](Layer* layer) { 1367 if (layer->getLayerStack() == hw->getLayerStack()) { 1368 Region drawRegion(tr.transform( 1369 layer->visibleNonTransparentRegion)); 1370 drawRegion.andSelf(bounds); 1371 if (!drawRegion.isEmpty()) { 1372 layersSortedByZ.add(layer); 1373 } 1374 } 1375 }); 1376 } 1377 hw->setVisibleLayersSortedByZ(layersSortedByZ); 1378 hw->undefinedRegion.set(bounds); 1379 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 1380 hw->dirtyRegion.orSelf(dirtyRegion); 1381 } 1382 } 1383 } 1384 1385 void SurfaceFlinger::setUpHWComposer() { 1386 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1387 bool dirty = !mDisplays[dpy]->getDirtyRegion(false).isEmpty(); 1388 bool empty = mDisplays[dpy]->getVisibleLayersSortedByZ().size() == 0; 1389 bool wasEmpty = !mDisplays[dpy]->lastCompositionHadVisibleLayers; 1390 1391 // If nothing has changed (!dirty), don't recompose. 1392 // If something changed, but we don't currently have any visible layers, 1393 // and didn't when we last did a composition, then skip it this time. 1394 // The second rule does two things: 1395 // - When all layers are removed from a display, we'll emit one black 1396 // frame, then nothing more until we get new layers. 1397 // - When a display is created with a private layer stack, we won't 1398 // emit any black frames until a layer is added to the layer stack. 1399 bool mustRecompose = dirty && !(empty && wasEmpty); 1400 1401 ALOGV_IF(mDisplays[dpy]->getDisplayType() == DisplayDevice::DISPLAY_VIRTUAL, 1402 "dpy[%zu]: %s composition (%sdirty %sempty %swasEmpty)", dpy, 1403 mustRecompose ? "doing" : "skipping", 1404 dirty ? "+" : "-", 1405 empty ? "+" : "-", 1406 wasEmpty ? "+" : "-"); 1407 1408 mDisplays[dpy]->beginFrame(mustRecompose); 1409 1410 if (mustRecompose) { 1411 mDisplays[dpy]->lastCompositionHadVisibleLayers = !empty; 1412 } 1413 } 1414 1415 HWComposer& hwc(getHwComposer()); 1416 if (hwc.initCheck() == NO_ERROR) { 1417 // build the h/w work list 1418 if (CC_UNLIKELY(mHwWorkListDirty)) { 1419 mHwWorkListDirty = false; 1420 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1421 sp<const DisplayDevice> hw(mDisplays[dpy]); 1422 const int32_t id = hw->getHwcDisplayId(); 1423 if (id >= 0) { 1424 const Vector< sp<Layer> >& currentLayers( 1425 hw->getVisibleLayersSortedByZ()); 1426 const size_t count = currentLayers.size(); 1427 if (hwc.createWorkList(id, count) == NO_ERROR) { 1428 HWComposer::LayerListIterator cur = hwc.begin(id); 1429 const HWComposer::LayerListIterator end = hwc.end(id); 1430 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 1431 const sp<Layer>& layer(currentLayers[i]); 1432 layer->setGeometry(hw, *cur); 1433 if (mDebugDisableHWC || mDebugRegion || mDaltonize || mHasColorMatrix) { 1434 cur->setSkip(true); 1435 } 1436 } 1437 } 1438 } 1439 } 1440 } 1441 1442 // set the per-frame data 1443 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1444 sp<const DisplayDevice> hw(mDisplays[dpy]); 1445 const int32_t id = hw->getHwcDisplayId(); 1446 if (id >= 0) { 1447 const Vector< sp<Layer> >& currentLayers( 1448 hw->getVisibleLayersSortedByZ()); 1449 const size_t count = currentLayers.size(); 1450 HWComposer::LayerListIterator cur = hwc.begin(id); 1451 const HWComposer::LayerListIterator end = hwc.end(id); 1452 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 1453 /* 1454 * update the per-frame h/w composer data for each layer 1455 * and build the transparent region of the FB 1456 */ 1457 const sp<Layer>& layer(currentLayers[i]); 1458 layer->setPerFrameData(hw, *cur); 1459 } 1460 } 1461 } 1462 1463 // If possible, attempt to use the cursor overlay on each display. 1464 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1465 sp<const DisplayDevice> hw(mDisplays[dpy]); 1466 const int32_t id = hw->getHwcDisplayId(); 1467 if (id >= 0) { 1468 const Vector< sp<Layer> >& currentLayers( 1469 hw->getVisibleLayersSortedByZ()); 1470 const size_t count = currentLayers.size(); 1471 HWComposer::LayerListIterator cur = hwc.begin(id); 1472 const HWComposer::LayerListIterator end = hwc.end(id); 1473 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 1474 const sp<Layer>& layer(currentLayers[i]); 1475 if (layer->isPotentialCursor()) { 1476 cur->setIsCursorLayerHint(); 1477 break; 1478 } 1479 } 1480 } 1481 } 1482 1483 status_t err = hwc.prepare(); 1484 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 1485 1486 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1487 sp<const DisplayDevice> hw(mDisplays[dpy]); 1488 hw->prepareFrame(hwc); 1489 } 1490 } 1491 } 1492 1493 void SurfaceFlinger::doComposition() { 1494 ATRACE_CALL(); 1495 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 1496 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1497 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1498 if (hw->isDisplayOn()) { 1499 // transform the dirty region into this screen's coordinate space 1500 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 1501 1502 // repaint the framebuffer (if needed) 1503 doDisplayComposition(hw, dirtyRegion); 1504 1505 hw->dirtyRegion.clear(); 1506 hw->flip(hw->swapRegion); 1507 hw->swapRegion.clear(); 1508 } 1509 // inform the h/w that we're done compositing 1510 hw->compositionComplete(); 1511 } 1512 postFramebuffer(); 1513 } 1514 1515 void SurfaceFlinger::postFramebuffer() 1516 { 1517 ATRACE_CALL(); 1518 1519 const nsecs_t now = systemTime(); 1520 mDebugInSwapBuffers = now; 1521 1522 HWComposer& hwc(getHwComposer()); 1523 if (hwc.initCheck() == NO_ERROR) { 1524 if (!hwc.supportsFramebufferTarget()) { 1525 // EGL spec says: 1526 // "surface must be bound to the calling thread's current context, 1527 // for the current rendering API." 1528 getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext); 1529 } 1530 hwc.commit(); 1531 } 1532 1533 // make the default display current because the VirtualDisplayDevice code cannot 1534 // deal with dequeueBuffer() being called outside of the composition loop; however 1535 // the code below can call glFlush() which is allowed (and does in some case) call 1536 // dequeueBuffer(). 1537 getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext); 1538 1539 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1540 sp<const DisplayDevice> hw(mDisplays[dpy]); 1541 const Vector< sp<Layer> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1542 hw->onSwapBuffersCompleted(hwc); 1543 const size_t count = currentLayers.size(); 1544 int32_t id = hw->getHwcDisplayId(); 1545 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1546 HWComposer::LayerListIterator cur = hwc.begin(id); 1547 const HWComposer::LayerListIterator end = hwc.end(id); 1548 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1549 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1550 } 1551 } else { 1552 for (size_t i = 0; i < count; i++) { 1553 currentLayers[i]->onLayerDisplayed(hw, NULL); 1554 } 1555 } 1556 } 1557 1558 mLastSwapBufferTime = systemTime() - now; 1559 mDebugInSwapBuffers = 0; 1560 1561 uint32_t flipCount = getDefaultDisplayDevice()->getPageFlipCount(); 1562 if (flipCount % LOG_FRAME_STATS_PERIOD == 0) { 1563 logFrameStats(); 1564 } 1565 } 1566 1567 void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1568 { 1569 ATRACE_CALL(); 1570 1571 // here we keep a copy of the drawing state (that is the state that's 1572 // going to be overwritten by handleTransactionLocked()) outside of 1573 // mStateLock so that the side-effects of the State assignment 1574 // don't happen with mStateLock held (which can cause deadlocks). 1575 State drawingState(mDrawingState); 1576 1577 Mutex::Autolock _l(mStateLock); 1578 const nsecs_t now = systemTime(); 1579 mDebugInTransaction = now; 1580 1581 // Here we're guaranteed that some transaction flags are set 1582 // so we can call handleTransactionLocked() unconditionally. 1583 // We call getTransactionFlags(), which will also clear the flags, 1584 // with mStateLock held to guarantee that mCurrentState won't change 1585 // until the transaction is committed. 1586 1587 transactionFlags = getTransactionFlags(eTransactionMask); 1588 handleTransactionLocked(transactionFlags); 1589 1590 mLastTransactionTime = systemTime() - now; 1591 mDebugInTransaction = 0; 1592 invalidateHwcGeometry(); 1593 // here the transaction has been committed 1594 } 1595 1596 void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1597 { 1598 // Notify all layers of available frames 1599 mCurrentState.traverseInZOrder([](Layer* layer) { 1600 layer->notifyAvailableFrames(); 1601 }); 1602 1603 /* 1604 * Traversal of the children 1605 * (perform the transaction for each of them if needed) 1606 */ 1607 1608 if (transactionFlags & eTraversalNeeded) { 1609 mCurrentState.traverseInZOrder([&](Layer* layer) { 1610 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1611 if (!trFlags) return; 1612 1613 const uint32_t flags = layer->doTransaction(0); 1614 if (flags & Layer::eVisibleRegion) 1615 mVisibleRegionsDirty = true; 1616 }); 1617 } 1618 1619 /* 1620 * Perform display own transactions if needed 1621 */ 1622 1623 if (transactionFlags & eDisplayTransactionNeeded) { 1624 // here we take advantage of Vector's copy-on-write semantics to 1625 // improve performance by skipping the transaction entirely when 1626 // know that the lists are identical 1627 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1628 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1629 if (!curr.isIdenticalTo(draw)) { 1630 mVisibleRegionsDirty = true; 1631 const size_t cc = curr.size(); 1632 size_t dc = draw.size(); 1633 1634 // find the displays that were removed 1635 // (ie: in drawing state but not in current state) 1636 // also handle displays that changed 1637 // (ie: displays that are in both lists) 1638 for (size_t i=0 ; i<dc ; i++) { 1639 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1640 if (j < 0) { 1641 // in drawing state but not in current state 1642 if (!draw[i].isMainDisplay()) { 1643 // Call makeCurrent() on the primary display so we can 1644 // be sure that nothing associated with this display 1645 // is current. 1646 const sp<const DisplayDevice> defaultDisplay(getDefaultDisplayDeviceLocked()); 1647 defaultDisplay->makeCurrent(mEGLDisplay, mEGLContext); 1648 sp<DisplayDevice> hw(getDisplayDeviceLocked(draw.keyAt(i))); 1649 if (hw != NULL) 1650 hw->disconnect(getHwComposer()); 1651 if (draw[i].type < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) 1652 mEventThread->onHotplugReceived(draw[i].type, false); 1653 mDisplays.removeItem(draw.keyAt(i)); 1654 } else { 1655 ALOGW("trying to remove the main display"); 1656 } 1657 } else { 1658 // this display is in both lists. see if something changed. 1659 const DisplayDeviceState& state(curr[j]); 1660 const wp<IBinder>& display(curr.keyAt(j)); 1661 const sp<IBinder> state_binder = IInterface::asBinder(state.surface); 1662 const sp<IBinder> draw_binder = IInterface::asBinder(draw[i].surface); 1663 if (state_binder != draw_binder) { 1664 // changing the surface is like destroying and 1665 // recreating the DisplayDevice, so we just remove it 1666 // from the drawing state, so that it get re-added 1667 // below. 1668 sp<DisplayDevice> hw(getDisplayDeviceLocked(display)); 1669 if (hw != NULL) 1670 hw->disconnect(getHwComposer()); 1671 mDisplays.removeItem(display); 1672 mDrawingState.displays.removeItemsAt(i); 1673 dc--; i--; 1674 // at this point we must loop to the next item 1675 continue; 1676 } 1677 1678 const sp<DisplayDevice> disp(getDisplayDeviceLocked(display)); 1679 if (disp != NULL) { 1680 if (state.layerStack != draw[i].layerStack) { 1681 disp->setLayerStack(state.layerStack); 1682 } 1683 if ((state.orientation != draw[i].orientation) 1684 || (state.viewport != draw[i].viewport) 1685 || (state.frame != draw[i].frame)) 1686 { 1687 disp->setProjection(state.orientation, 1688 state.viewport, state.frame); 1689 } 1690 if (state.width != draw[i].width || state.height != draw[i].height) { 1691 disp->setDisplaySize(state.width, state.height); 1692 } 1693 } 1694 } 1695 } 1696 1697 // find displays that were added 1698 // (ie: in current state but not in drawing state) 1699 for (size_t i=0 ; i<cc ; i++) { 1700 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1701 const DisplayDeviceState& state(curr[i]); 1702 1703 sp<DisplaySurface> dispSurface; 1704 sp<IGraphicBufferProducer> producer; 1705 sp<IGraphicBufferProducer> bqProducer; 1706 sp<IGraphicBufferConsumer> bqConsumer; 1707 BufferQueue::createBufferQueue(&bqProducer, &bqConsumer); 1708 1709 int32_t hwcDisplayId = -1; 1710 if (state.isVirtualDisplay()) { 1711 // Virtual displays without a surface are dormant: 1712 // they have external state (layer stack, projection, 1713 // etc.) but no internal state (i.e. a DisplayDevice). 1714 if (state.surface != NULL) { 1715 1716 int width = 0; 1717 int status = state.surface->query( 1718 NATIVE_WINDOW_WIDTH, &width); 1719 ALOGE_IF(status != NO_ERROR, 1720 "Unable to query width (%d)", status); 1721 int height = 0; 1722 status = state.surface->query( 1723 NATIVE_WINDOW_HEIGHT, &height); 1724 ALOGE_IF(status != NO_ERROR, 1725 "Unable to query height (%d)", status); 1726 if (mUseHwcVirtualDisplays && 1727 (SurfaceFlinger::maxVirtualDisplaySize == 0 || 1728 (width <= static_cast<int>(SurfaceFlinger::maxVirtualDisplaySize) && 1729 height <= static_cast<int>(SurfaceFlinger::maxVirtualDisplaySize)))) { 1730 hwcDisplayId = allocateHwcDisplayId(state.type); 1731 } 1732 1733 sp<VirtualDisplaySurface> vds = new VirtualDisplaySurface( 1734 *mHwc, hwcDisplayId, state.surface, 1735 bqProducer, bqConsumer, state.displayName); 1736 1737 dispSurface = vds; 1738 producer = vds; 1739 } 1740 } else { 1741 ALOGE_IF(state.surface!=NULL, 1742 "adding a supported display, but rendering " 1743 "surface is provided (%p), ignoring it", 1744 state.surface.get()); 1745 hwcDisplayId = allocateHwcDisplayId(state.type); 1746 // for supported (by hwc) displays we provide our 1747 // own rendering surface 1748 dispSurface = new FramebufferSurface(*mHwc, state.type, 1749 bqConsumer); 1750 producer = bqProducer; 1751 } 1752 1753 const wp<IBinder>& display(curr.keyAt(i)); 1754 if (dispSurface != NULL) { 1755 sp<DisplayDevice> hw = new DisplayDevice(this, 1756 state.type, hwcDisplayId, 1757 mHwc->getFormat(hwcDisplayId), state.isSecure, 1758 display, dispSurface, producer, 1759 mRenderEngine->getEGLConfig(), false); 1760 hw->setLayerStack(state.layerStack); 1761 hw->setProjection(state.orientation, 1762 state.viewport, state.frame); 1763 hw->setDisplayName(state.displayName); 1764 mDisplays.add(display, hw); 1765 if (state.isVirtualDisplay()) { 1766 if (hwcDisplayId >= 0) { 1767 mHwc->setVirtualDisplayProperties(hwcDisplayId, 1768 hw->getWidth(), hw->getHeight(), 1769 hw->getFormat()); 1770 } 1771 } else { 1772 mEventThread->onHotplugReceived(state.type, true); 1773 } 1774 } 1775 } 1776 } 1777 } 1778 } 1779 1780 if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { 1781 // The transform hint might have changed for some layers 1782 // (either because a display has changed, or because a layer 1783 // as changed). 1784 // 1785 // Walk through all the layers in currentLayers, 1786 // and update their transform hint. 1787 // 1788 // If a layer is visible only on a single display, then that 1789 // display is used to calculate the hint, otherwise we use the 1790 // default display. 1791 // 1792 // NOTE: we do this here, rather than in rebuildLayerStacks() so that 1793 // the hint is set before we acquire a buffer from the surface texture. 1794 // 1795 // NOTE: layer transactions have taken place already, so we use their 1796 // drawing state. However, SurfaceFlinger's own transaction has not 1797 // happened yet, so we must use the current state layer list 1798 // (soon to become the drawing state list). 1799 // 1800 sp<const DisplayDevice> disp; 1801 uint32_t currentlayerStack = 0; 1802 bool first = true; 1803 mCurrentState.traverseInZOrder([&](Layer* layer) { 1804 // NOTE: we rely on the fact that layers are sorted by 1805 // layerStack first (so we don't have to traverse the list 1806 // of displays for every layer). 1807 uint32_t layerStack = layer->getLayerStack(); 1808 if (first || currentlayerStack != layerStack) { 1809 currentlayerStack = layerStack; 1810 // figure out if this layerstack is mirrored 1811 // (more than one display) if so, pick the default display, 1812 // if not, pick the only display it's on. 1813 disp.clear(); 1814 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1815 sp<const DisplayDevice> hw(mDisplays[dpy]); 1816 if (hw->getLayerStack() == currentlayerStack) { 1817 if (disp == NULL) { 1818 disp = hw; 1819 } else { 1820 disp = NULL; 1821 break; 1822 } 1823 } 1824 } 1825 } 1826 if (disp == NULL) { 1827 // NOTE: TEMPORARY FIX ONLY. Real fix should cause layers to 1828 // redraw after transform hint changes. See bug 8508397. 1829 1830 // could be null when this layer is using a layerStack 1831 // that is not visible on any display. Also can occur at 1832 // screen off/on times. 1833 disp = getDefaultDisplayDeviceLocked(); 1834 } 1835 layer->updateTransformHint(disp); 1836 1837 first = false; 1838 }); 1839 } 1840 1841 1842 /* 1843 * Perform our own transaction if needed 1844 */ 1845 1846 if (mLayersAdded) { 1847 mLayersAdded = false; 1848 // Layers have been added. 1849 mVisibleRegionsDirty = true; 1850 } 1851 1852 // some layers might have been removed, so 1853 // we need to update the regions they're exposing. 1854 if (mLayersRemoved) { 1855 mLayersRemoved = false; 1856 mVisibleRegionsDirty = true; 1857 mDrawingState.traverseInZOrder([&](Layer* layer) { 1858 if (mLayersPendingRemoval.indexOf(layer) >= 0) { 1859 // this layer is not visible anymore 1860 // TODO: we could traverse the tree from front to back and 1861 // compute the actual visible region 1862 // TODO: we could cache the transformed region 1863 Region visibleReg; 1864 visibleReg.set(layer->computeScreenBounds()); 1865 invalidateLayerStack(layer, visibleReg); 1866 } 1867 }); 1868 } 1869 1870 commitTransaction(); 1871 1872 updateCursorAsync(); 1873 } 1874 1875 void SurfaceFlinger::updateCursorAsync() 1876 { 1877 HWComposer& hwc(getHwComposer()); 1878 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1879 sp<const DisplayDevice> hw(mDisplays[dpy]); 1880 const int32_t id = hw->getHwcDisplayId(); 1881 if (id < 0) { 1882 continue; 1883 } 1884 const Vector< sp<Layer> >& currentLayers( 1885 hw->getVisibleLayersSortedByZ()); 1886 const size_t count = currentLayers.size(); 1887 HWComposer::LayerListIterator cur = hwc.begin(id); 1888 const HWComposer::LayerListIterator end = hwc.end(id); 1889 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 1890 if (cur->getCompositionType() != HWC_CURSOR_OVERLAY) { 1891 continue; 1892 } 1893 const sp<Layer>& layer(currentLayers[i]); 1894 Rect cursorPos = layer->getPosition(hw); 1895 hwc.setCursorPositionAsync(id, cursorPos); 1896 break; 1897 } 1898 } 1899 } 1900 1901 void SurfaceFlinger::commitTransaction() 1902 { 1903 if (!mLayersPendingRemoval.isEmpty()) { 1904 // Notify removed layers now that they can't be drawn from 1905 for (const auto& l : mLayersPendingRemoval) { 1906 recordBufferingStats(l->getName().string(), 1907 l->getOccupancyHistory(true)); 1908 l->onRemoved(); 1909 } 1910 mLayersPendingRemoval.clear(); 1911 } 1912 1913 // If this transaction is part of a window animation then the next frame 1914 // we composite should be considered an animation as well. 1915 mAnimCompositionPending = mAnimTransactionPending; 1916 1917 mDrawingState = mCurrentState; 1918 mDrawingState.traverseInZOrder([](Layer* layer) { 1919 layer->commitChildList(); 1920 }); 1921 mTransactionPending = false; 1922 mAnimTransactionPending = false; 1923 mTransactionCV.broadcast(); 1924 } 1925 1926 void SurfaceFlinger::computeVisibleRegions(const sp<const DisplayDevice>& displayDevice, 1927 Region& outDirtyRegion, Region& outOpaqueRegion) 1928 { 1929 ATRACE_CALL(); 1930 1931 Region aboveOpaqueLayers; 1932 Region aboveCoveredLayers; 1933 Region dirty; 1934 1935 outDirtyRegion.clear(); 1936 1937 mDrawingState.traverseInReverseZOrder([&](Layer* layer) { 1938 // start with the whole surface at its current location 1939 const Layer::State& s(layer->getDrawingState()); 1940 1941 // only consider the layers on the given layer stack 1942 if (layer->getLayerStack() != displayDevice->getLayerStack()) 1943 return; 1944 1945 /* 1946 * opaqueRegion: area of a surface that is fully opaque. 1947 */ 1948 Region opaqueRegion; 1949 1950 /* 1951 * visibleRegion: area of a surface that is visible on screen 1952 * and not fully transparent. This is essentially the layer's 1953 * footprint minus the opaque regions above it. 1954 * Areas covered by a translucent surface are considered visible. 1955 */ 1956 Region visibleRegion; 1957 1958 /* 1959 * coveredRegion: area of a surface that is covered by all 1960 * visible regions above it (which includes the translucent areas). 1961 */ 1962 Region coveredRegion; 1963 1964 /* 1965 * transparentRegion: area of a surface that is hinted to be completely 1966 * transparent. This is only used to tell when the layer has no visible 1967 * non-transparent regions and can be removed from the layer list. It 1968 * does not affect the visibleRegion of this layer or any layers 1969 * beneath it. The hint may not be correct if apps don't respect the 1970 * SurfaceView restrictions (which, sadly, some don't). 1971 */ 1972 Region transparentRegion; 1973 1974 1975 // handle hidden surfaces by setting the visible region to empty 1976 if (CC_LIKELY(layer->isVisible())) { 1977 const bool translucent = !layer->isOpaque(s); 1978 Rect bounds(layer->computeScreenBounds()); 1979 visibleRegion.set(bounds); 1980 Transform tr = layer->getTransform(); 1981 if (!visibleRegion.isEmpty()) { 1982 // Remove the transparent area from the visible region 1983 if (translucent) { 1984 if (tr.preserveRects()) { 1985 // transform the transparent region 1986 transparentRegion = tr.transform(s.activeTransparentRegion); 1987 } else { 1988 // transformation too complex, can't do the 1989 // transparent region optimization. 1990 transparentRegion.clear(); 1991 } 1992 } 1993 1994 // compute the opaque region 1995 const int32_t layerOrientation = tr.getOrientation(); 1996 if (s.alpha==255 && !translucent && 1997 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1998 // the opaque region is the layer's footprint 1999 opaqueRegion = visibleRegion; 2000 } 2001 } 2002 } 2003 2004 // Clip the covered region to the visible region 2005 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 2006 2007 // Update aboveCoveredLayers for next (lower) layer 2008 aboveCoveredLayers.orSelf(visibleRegion); 2009 2010 // subtract the opaque region covered by the layers above us 2011 visibleRegion.subtractSelf(aboveOpaqueLayers); 2012 2013 // compute this layer's dirty region 2014 if (layer->contentDirty) { 2015 // we need to invalidate the whole region 2016 dirty = visibleRegion; 2017 // as well, as the old visible region 2018 dirty.orSelf(layer->visibleRegion); 2019 layer->contentDirty = false; 2020 } else { 2021 /* compute the exposed region: 2022 * the exposed region consists of two components: 2023 * 1) what's VISIBLE now and was COVERED before 2024 * 2) what's EXPOSED now less what was EXPOSED before 2025 * 2026 * note that (1) is conservative, we start with the whole 2027 * visible region but only keep what used to be covered by 2028 * something -- which mean it may have been exposed. 2029 * 2030 * (2) handles areas that were not covered by anything but got 2031 * exposed because of a resize. 2032 */ 2033 const Region newExposed = visibleRegion - coveredRegion; 2034 const Region oldVisibleRegion = layer->visibleRegion; 2035 const Region oldCoveredRegion = layer->coveredRegion; 2036 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 2037 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 2038 } 2039 dirty.subtractSelf(aboveOpaqueLayers); 2040 2041 // accumulate to the screen dirty region 2042 outDirtyRegion.orSelf(dirty); 2043 2044 // Update aboveOpaqueLayers for next (lower) layer 2045 aboveOpaqueLayers.orSelf(opaqueRegion); 2046 2047 // Store the visible region in screen space 2048 layer->setVisibleRegion(visibleRegion); 2049 layer->setCoveredRegion(coveredRegion); 2050 layer->setVisibleNonTransparentRegion( 2051 visibleRegion.subtract(transparentRegion)); 2052 }); 2053 2054 outOpaqueRegion = aboveOpaqueLayers; 2055 } 2056 2057 void SurfaceFlinger::invalidateLayerStack(const sp<const Layer>& layer, const Region& dirty) { 2058 uint32_t layerStack = layer->getLayerStack(); 2059 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2060 const sp<DisplayDevice>& hw(mDisplays[dpy]); 2061 if (hw->getLayerStack() == layerStack) { 2062 hw->dirtyRegion.orSelf(dirty); 2063 } 2064 } 2065 } 2066 2067 bool SurfaceFlinger::handlePageFlip() 2068 { 2069 nsecs_t latchTime = systemTime(); 2070 Region dirtyRegion; 2071 2072 bool visibleRegions = false; 2073 bool frameQueued = false; 2074 2075 // Store the set of layers that need updates. This set must not change as 2076 // buffers are being latched, as this could result in a deadlock. 2077 // Example: Two producers share the same command stream and: 2078 // 1.) Layer 0 is latched 2079 // 2.) Layer 0 gets a new frame 2080 // 2.) Layer 1 gets a new frame 2081 // 3.) Layer 1 is latched. 2082 // Display is now waiting on Layer 1's frame, which is behind layer 0's 2083 // second frame. But layer 0's second frame could be waiting on display. 2084 Vector<Layer*> layersWithQueuedFrames; 2085 mDrawingState.traverseInZOrder([&](Layer* layer) { 2086 if (layer->hasQueuedFrame()) { 2087 frameQueued = true; 2088 if (layer->shouldPresentNow(mPrimaryDispSync)) { 2089 layersWithQueuedFrames.push_back(layer); 2090 } else { 2091 layer->useEmptyDamage(); 2092 } 2093 } else { 2094 layer->useEmptyDamage(); 2095 } 2096 }); 2097 for (size_t i = 0, count = layersWithQueuedFrames.size() ; i<count ; i++) { 2098 Layer* layer = layersWithQueuedFrames[i]; 2099 const Region dirty(layer->latchBuffer(visibleRegions, latchTime)); 2100 layer->useSurfaceDamage(); 2101 invalidateLayerStack(layer, dirty); 2102 } 2103 2104 mVisibleRegionsDirty |= visibleRegions; 2105 2106 // If we will need to wake up at some time in the future to deal with a 2107 // queued frame that shouldn't be displayed during this vsync period, wake 2108 // up during the next vsync period to check again. 2109 if (frameQueued && layersWithQueuedFrames.empty()) { 2110 signalLayerUpdate(); 2111 } 2112 2113 // Only continue with the refresh if there is actually new work to do 2114 return !layersWithQueuedFrames.empty(); 2115 } 2116 2117 void SurfaceFlinger::invalidateHwcGeometry() 2118 { 2119 mHwWorkListDirty = true; 2120 } 2121 2122 2123 void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 2124 const Region& inDirtyRegion) 2125 { 2126 // We only need to actually compose the display if: 2127 // 1) It is being handled by hardware composer, which may need this to 2128 // keep its virtual display state machine in sync, or 2129 // 2) There is work to be done (the dirty region isn't empty) 2130 bool isHwcDisplay = hw->getHwcDisplayId() >= 0; 2131 if (!isHwcDisplay && inDirtyRegion.isEmpty()) { 2132 return; 2133 } 2134 2135 Region dirtyRegion(inDirtyRegion); 2136 2137 // compute the invalid region 2138 hw->swapRegion.orSelf(dirtyRegion); 2139 2140 uint32_t flags = hw->getFlags(); 2141 if (flags & DisplayDevice::SWAP_RECTANGLE) { 2142 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 2143 // takes a rectangle, we must make sure to update that whole 2144 // rectangle in that case 2145 dirtyRegion.set(hw->swapRegion.bounds()); 2146 } else { 2147 if (flags & DisplayDevice::PARTIAL_UPDATES) { 2148 // We need to redraw the rectangle that will be updated 2149 // (pushed to the framebuffer). 2150 // This is needed because PARTIAL_UPDATES only takes one 2151 // rectangle instead of a region (see DisplayDevice::flip()) 2152 dirtyRegion.set(hw->swapRegion.bounds()); 2153 } else { 2154 // we need to redraw everything (the whole screen) 2155 dirtyRegion.set(hw->bounds()); 2156 hw->swapRegion = dirtyRegion; 2157 } 2158 } 2159 2160 if (CC_LIKELY(!mDaltonize && !mHasColorMatrix)) { 2161 if (!doComposeSurfaces(hw, dirtyRegion)) return; 2162 } else { 2163 RenderEngine& engine(getRenderEngine()); 2164 mat4 colorMatrix = mColorMatrix; 2165 if (mDaltonize) { 2166 colorMatrix = colorMatrix * mDaltonizer(); 2167 } 2168 mat4 oldMatrix = engine.setupColorTransform(colorMatrix); 2169 doComposeSurfaces(hw, dirtyRegion); 2170 engine.setupColorTransform(oldMatrix); 2171 } 2172 2173 // update the swap region and clear the dirty region 2174 hw->swapRegion.orSelf(dirtyRegion); 2175 2176 // swap buffers (presentation) 2177 hw->swapBuffers(getHwComposer()); 2178 } 2179 2180 bool SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 2181 { 2182 RenderEngine& engine(getRenderEngine()); 2183 const int32_t id = hw->getHwcDisplayId(); 2184 HWComposer& hwc(getHwComposer()); 2185 HWComposer::LayerListIterator cur = hwc.begin(id); 2186 const HWComposer::LayerListIterator end = hwc.end(id); 2187 2188 bool hasGlesComposition = hwc.hasGlesComposition(id); 2189 if (hasGlesComposition) { 2190 if (!hw->makeCurrent(mEGLDisplay, mEGLContext)) { 2191 ALOGW("DisplayDevice::makeCurrent failed. Aborting surface composition for display %s", 2192 hw->getDisplayName().string()); 2193 eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 2194 if(!getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext)) { 2195 ALOGE("DisplayDevice::makeCurrent on default display failed. Aborting."); 2196 } 2197 return false; 2198 } 2199 2200 // Never touch the framebuffer if we don't have any framebuffer layers 2201 const bool hasHwcComposition = hwc.hasHwcComposition(id); 2202 if (hasHwcComposition) { 2203 // when using overlays, we assume a fully transparent framebuffer 2204 // NOTE: we could reduce how much we need to clear, for instance 2205 // remove where there are opaque FB layers. however, on some 2206 // GPUs doing a "clean slate" clear might be more efficient. 2207 // We'll revisit later if needed. 2208 engine.clearWithColor(0, 0, 0, 0); 2209 } else { 2210 // we start with the whole screen area 2211 const Region bounds(hw->getBounds()); 2212 2213 // we remove the scissor part 2214 // we're left with the letterbox region 2215 // (common case is that letterbox ends-up being empty) 2216 const Region letterbox(bounds.subtract(hw->getScissor())); 2217 2218 // compute the area to clear 2219 Region region(hw->undefinedRegion.merge(letterbox)); 2220 2221 // but limit it to the dirty region 2222 region.andSelf(dirty); 2223 2224 // screen is already cleared here 2225 if (!region.isEmpty()) { 2226 // can happen with SurfaceView 2227 drawWormhole(hw, region); 2228 } 2229 } 2230 2231 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 2232 // just to be on the safe side, we don't set the 2233 // scissor on the main display. It should never be needed 2234 // anyways (though in theory it could since the API allows it). 2235 const Rect& bounds(hw->getBounds()); 2236 const Rect& scissor(hw->getScissor()); 2237 if (scissor != bounds) { 2238 // scissor doesn't match the screen's dimensions, so we 2239 // need to clear everything outside of it and enable 2240 // the GL scissor so we don't draw anything where we shouldn't 2241 2242 // enable scissor for this frame 2243 const uint32_t height = hw->getHeight(); 2244 engine.setScissor(scissor.left, height - scissor.bottom, 2245 scissor.getWidth(), scissor.getHeight()); 2246 } 2247 } 2248 } 2249 2250 /* 2251 * and then, render the layers targeted at the framebuffer 2252 */ 2253 2254 const Vector< sp<Layer> >& layers(hw->getVisibleLayersSortedByZ()); 2255 const size_t count = layers.size(); 2256 const Transform& tr = hw->getTransform(); 2257 if (cur != end) { 2258 // we're using h/w composer 2259 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 2260 const sp<Layer>& layer(layers[i]); 2261 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 2262 if (!clip.isEmpty()) { 2263 switch (cur->getCompositionType()) { 2264 case HWC_CURSOR_OVERLAY: 2265 case HWC_OVERLAY: { 2266 const Layer::State& state(layer->getDrawingState()); 2267 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 2268 && i 2269 && layer->isOpaque(state) && (state.alpha == 0xFF) 2270 && hasGlesComposition) { 2271 // never clear the very first layer since we're 2272 // guaranteed the FB is already cleared 2273 layer->clearWithOpenGL(hw); 2274 } 2275 break; 2276 } 2277 case HWC_FRAMEBUFFER: { 2278 layer->draw(hw, clip); 2279 break; 2280 } 2281 case HWC_FRAMEBUFFER_TARGET: { 2282 // this should not happen as the iterator shouldn't 2283 // let us get there. 2284 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%zu)", i); 2285 break; 2286 } 2287 } 2288 } 2289 layer->setAcquireFence(hw, *cur); 2290 } 2291 } else { 2292 // we're not using h/w composer 2293 for (size_t i=0 ; i<count ; ++i) { 2294 const sp<Layer>& layer(layers[i]); 2295 const Region clip(dirty.intersect( 2296 tr.transform(layer->visibleRegion))); 2297 if (!clip.isEmpty()) { 2298 layer->draw(hw, clip); 2299 } 2300 } 2301 } 2302 2303 // disable scissor at the end of the frame 2304 engine.disableScissor(); 2305 return true; 2306 } 2307 2308 void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, const Region& region) const { 2309 const int32_t height = hw->getHeight(); 2310 RenderEngine& engine(getRenderEngine()); 2311 engine.fillRegionWithColor(region, height, 0, 0, 0, 0); 2312 } 2313 2314 status_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 2315 const sp<IBinder>& handle, 2316 const sp<IGraphicBufferProducer>& gbc, 2317 const sp<Layer>& lbc, 2318 const sp<Layer>& parent) 2319 { 2320 // add this layer to the current state list 2321 { 2322 Mutex::Autolock _l(mStateLock); 2323 if (mNumLayers >= MAX_LAYERS) { 2324 return NO_MEMORY; 2325 } 2326 if (parent == nullptr) { 2327 mCurrentState.layersSortedByZ.add(lbc); 2328 } else { 2329 if (mCurrentState.layersSortedByZ.indexOf(parent) < 0) { 2330 ALOGE("addClientLayer called with a removed parent"); 2331 return NAME_NOT_FOUND; 2332 } 2333 parent->addChild(lbc); 2334 } 2335 2336 mGraphicBufferProducerList.add(IInterface::asBinder(gbc)); 2337 mLayersAdded = true; 2338 mNumLayers++; 2339 } 2340 2341 // attach this layer to the client 2342 client->attachLayer(handle, lbc); 2343 2344 return NO_ERROR; 2345 } 2346 2347 status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer, bool topLevelOnly) { 2348 Mutex::Autolock _l(mStateLock); 2349 2350 const auto& p = layer->getParent(); 2351 ssize_t index; 2352 if (p != nullptr) { 2353 if (topLevelOnly) { 2354 return NO_ERROR; 2355 } 2356 2357 sp<Layer> ancestor = p; 2358 while (ancestor->getParent() != nullptr) { 2359 ancestor = ancestor->getParent(); 2360 } 2361 if (mCurrentState.layersSortedByZ.indexOf(ancestor) < 0) { 2362 ALOGE("removeLayer called with a layer whose parent has been removed"); 2363 return NAME_NOT_FOUND; 2364 } 2365 2366 index = p->removeChild(layer); 2367 } else { 2368 index = mCurrentState.layersSortedByZ.remove(layer); 2369 } 2370 2371 // As a matter of normal operation, the LayerCleaner will produce a second 2372 // attempt to remove the surface. The Layer will be kept alive in mDrawingState 2373 // so we will succeed in promoting it, but it's already been removed 2374 // from mCurrentState. As long as we can find it in mDrawingState we have no problem 2375 // otherwise something has gone wrong and we are leaking the layer. 2376 if (index < 0 && mDrawingState.layersSortedByZ.indexOf(layer) < 0) { 2377 ALOGE("Failed to find layer (%s) in layer parent (%s).", 2378 layer->getName().string(), 2379 (p != nullptr) ? p->getName().string() : "no-parent"); 2380 return BAD_VALUE; 2381 } else if (index < 0) { 2382 return NO_ERROR; 2383 } 2384 2385 layer->onRemovedFromCurrentState(); 2386 mLayersPendingRemoval.add(layer); 2387 mLayersRemoved = true; 2388 mNumLayers -= 1 + layer->getChildrenCount(); 2389 setTransactionFlags(eTransactionNeeded); 2390 return NO_ERROR; 2391 } 2392 2393 uint32_t SurfaceFlinger::peekTransactionFlags() { 2394 return android_atomic_release_load(&mTransactionFlags); 2395 } 2396 2397 uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) { 2398 return android_atomic_and(~flags, &mTransactionFlags) & flags; 2399 } 2400 2401 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) { 2402 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 2403 if ((old & flags)==0) { // wake the server up 2404 signalTransaction(); 2405 } 2406 return old; 2407 } 2408 2409 void SurfaceFlinger::setTransactionState( 2410 const Vector<ComposerState>& state, 2411 const Vector<DisplayState>& displays, 2412 uint32_t flags) 2413 { 2414 ATRACE_CALL(); 2415 Mutex::Autolock _l(mStateLock); 2416 uint32_t transactionFlags = 0; 2417 2418 if (flags & eAnimation) { 2419 // For window updates that are part of an animation we must wait for 2420 // previous animation "frames" to be handled. 2421 while (mAnimTransactionPending) { 2422 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 2423 if (CC_UNLIKELY(err != NO_ERROR)) { 2424 // just in case something goes wrong in SF, return to the 2425 // caller after a few seconds. 2426 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 2427 "waiting for previous animation frame"); 2428 mAnimTransactionPending = false; 2429 break; 2430 } 2431 } 2432 } 2433 2434 size_t count = displays.size(); 2435 for (size_t i=0 ; i<count ; i++) { 2436 const DisplayState& s(displays[i]); 2437 transactionFlags |= setDisplayStateLocked(s); 2438 } 2439 2440 count = state.size(); 2441 for (size_t i=0 ; i<count ; i++) { 2442 const ComposerState& s(state[i]); 2443 // Here we need to check that the interface we're given is indeed 2444 // one of our own. A malicious client could give us a NULL 2445 // IInterface, or one of its own or even one of our own but a 2446 // different type. All these situations would cause us to crash. 2447 // 2448 // NOTE: it would be better to use RTTI as we could directly check 2449 // that we have a Client*. however, RTTI is disabled in Android. 2450 if (s.client != NULL) { 2451 sp<IBinder> binder = IInterface::asBinder(s.client); 2452 if (binder != NULL) { 2453 if (binder->queryLocalInterface(ISurfaceComposerClient::descriptor) != NULL) { 2454 sp<Client> client( static_cast<Client *>(s.client.get()) ); 2455 transactionFlags |= setClientStateLocked(client, s.state); 2456 } 2457 } 2458 } 2459 } 2460 2461 // If a synchronous transaction is explicitly requested without any changes, 2462 // force a transaction anyway. This can be used as a flush mechanism for 2463 // previous async transactions. 2464 if (transactionFlags == 0 && (flags & eSynchronous)) { 2465 transactionFlags = eTransactionNeeded; 2466 } 2467 2468 if (transactionFlags) { 2469 if (mInterceptor.isEnabled()) { 2470 mInterceptor.saveTransaction(state, mCurrentState.displays, displays, flags); 2471 } 2472 2473 // this triggers the transaction 2474 setTransactionFlags(transactionFlags); 2475 2476 // if this is a synchronous transaction, wait for it to take effect 2477 // before returning. 2478 if (flags & eSynchronous) { 2479 mTransactionPending = true; 2480 } 2481 if (flags & eAnimation) { 2482 mAnimTransactionPending = true; 2483 } 2484 while (mTransactionPending) { 2485 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 2486 if (CC_UNLIKELY(err != NO_ERROR)) { 2487 // just in case something goes wrong in SF, return to the 2488 // called after a few seconds. 2489 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 2490 mTransactionPending = false; 2491 break; 2492 } 2493 } 2494 } 2495 } 2496 2497 uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 2498 { 2499 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 2500 if (dpyIdx < 0) 2501 return 0; 2502 2503 uint32_t flags = 0; 2504 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 2505 if (disp.isValid()) { 2506 const uint32_t what = s.what; 2507 if (what & DisplayState::eSurfaceChanged) { 2508 if (IInterface::asBinder(disp.surface) != IInterface::asBinder(s.surface)) { 2509 disp.surface = s.surface; 2510 flags |= eDisplayTransactionNeeded; 2511 } 2512 } 2513 if (what & DisplayState::eLayerStackChanged) { 2514 if (disp.layerStack != s.layerStack) { 2515 disp.layerStack = s.layerStack; 2516 flags |= eDisplayTransactionNeeded; 2517 } 2518 } 2519 if (what & DisplayState::eDisplayProjectionChanged) { 2520 if (disp.orientation != s.orientation) { 2521 disp.orientation = s.orientation; 2522 flags |= eDisplayTransactionNeeded; 2523 } 2524 if (disp.frame != s.frame) { 2525 disp.frame = s.frame; 2526 flags |= eDisplayTransactionNeeded; 2527 } 2528 if (disp.viewport != s.viewport) { 2529 disp.viewport = s.viewport; 2530 flags |= eDisplayTransactionNeeded; 2531 } 2532 } 2533 if (what & DisplayState::eDisplaySizeChanged) { 2534 if (disp.width != s.width) { 2535 disp.width = s.width; 2536 flags |= eDisplayTransactionNeeded; 2537 } 2538 if (disp.height != s.height) { 2539 disp.height = s.height; 2540 flags |= eDisplayTransactionNeeded; 2541 } 2542 } 2543 } 2544 return flags; 2545 } 2546 2547 uint32_t SurfaceFlinger::setClientStateLocked( 2548 const sp<Client>& client, 2549 const layer_state_t& s) 2550 { 2551 uint32_t flags = 0; 2552 sp<Layer> layer(client->getLayerUser(s.surface)); 2553 if (layer != 0) { 2554 const uint32_t what = s.what; 2555 bool geometryAppliesWithResize = 2556 what & layer_state_t::eGeometryAppliesWithResize; 2557 if (what & layer_state_t::ePositionChanged) { 2558 if (layer->setPosition(s.x, s.y, !geometryAppliesWithResize)) { 2559 flags |= eTraversalNeeded; 2560 } 2561 } 2562 if (what & layer_state_t::eLayerChanged) { 2563 // NOTE: index needs to be calculated before we update the state 2564 const auto& p = layer->getParent(); 2565 if (p == nullptr) { 2566 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 2567 if (layer->setLayer(s.z) && idx >= 0) { 2568 mCurrentState.layersSortedByZ.removeAt(idx); 2569 mCurrentState.layersSortedByZ.add(layer); 2570 // we need traversal (state changed) 2571 // AND transaction (list changed) 2572 flags |= eTransactionNeeded|eTraversalNeeded; 2573 } 2574 } else { 2575 if (p->setChildLayer(layer, s.z)) { 2576 flags |= eTransactionNeeded|eTraversalNeeded; 2577 } 2578 } 2579 } 2580 if (what & layer_state_t::eSizeChanged) { 2581 if (layer->setSize(s.w, s.h)) { 2582 flags |= eTraversalNeeded; 2583 } 2584 } 2585 if (what & layer_state_t::eAlphaChanged) { 2586 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 2587 flags |= eTraversalNeeded; 2588 } 2589 if (what & layer_state_t::eMatrixChanged) { 2590 if (layer->setMatrix(s.matrix)) 2591 flags |= eTraversalNeeded; 2592 } 2593 if (what & layer_state_t::eTransparentRegionChanged) { 2594 if (layer->setTransparentRegionHint(s.transparentRegion)) 2595 flags |= eTraversalNeeded; 2596 } 2597 if (what & layer_state_t::eFlagsChanged) { 2598 if (layer->setFlags(s.flags, s.mask)) 2599 flags |= eTraversalNeeded; 2600 } 2601 if (what & layer_state_t::eCropChanged) { 2602 if (layer->setCrop(s.crop, !geometryAppliesWithResize)) 2603 flags |= eTraversalNeeded; 2604 } 2605 if (what & layer_state_t::eFinalCropChanged) { 2606 if (layer->setFinalCrop(s.finalCrop, !geometryAppliesWithResize)) 2607 flags |= eTraversalNeeded; 2608 } 2609 if (what & layer_state_t::eLayerStackChanged) { 2610 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 2611 // We only allow setting layer stacks for top level layers, 2612 // everything else inherits layer stack from its parent. 2613 if (layer->hasParent()) { 2614 ALOGE("Attempt to set layer stack on layer with parent (%s) is invalid", 2615 layer->getName().string()); 2616 } else if (idx < 0) { 2617 ALOGE("Attempt to set layer stack on layer without parent (%s) that " 2618 "that also does not appear in the top level layer list. Something" 2619 " has gone wrong.", layer->getName().string()); 2620 } else if (layer->setLayerStack(s.layerStack)) { 2621 mCurrentState.layersSortedByZ.removeAt(idx); 2622 mCurrentState.layersSortedByZ.add(layer); 2623 // we need traversal (state changed) 2624 // AND transaction (list changed) 2625 flags |= eTransactionNeeded|eTraversalNeeded; 2626 } 2627 } 2628 if (what & layer_state_t::eDeferTransaction) { 2629 if (s.barrierHandle != nullptr) { 2630 layer->deferTransactionUntil(s.barrierHandle, s.frameNumber); 2631 } else if (s.barrierGbp != nullptr) { 2632 const sp<IGraphicBufferProducer>& gbp = s.barrierGbp; 2633 if (authenticateSurfaceTextureLocked(gbp)) { 2634 const auto& otherLayer = 2635 (static_cast<MonitoredProducer*>(gbp.get()))->getLayer(); 2636 layer->deferTransactionUntil(otherLayer, s.frameNumber); 2637 } else { 2638 ALOGE("Attempt to defer transaction to to an" 2639 " unrecognized GraphicBufferProducer"); 2640 } 2641 } 2642 // We don't trigger a traversal here because if no other state is 2643 // changed, we don't want this to cause any more work 2644 } 2645 if (what & layer_state_t::eReparentChildren) { 2646 if (layer->reparentChildren(s.reparentHandle)) { 2647 flags |= eTransactionNeeded|eTraversalNeeded; 2648 } 2649 } 2650 if (what & layer_state_t::eDetachChildren) { 2651 layer->detachChildren(); 2652 } 2653 if (what & layer_state_t::eOverrideScalingModeChanged) { 2654 layer->setOverrideScalingMode(s.overrideScalingMode); 2655 // We don't trigger a traversal here because if no other state is 2656 // changed, we don't want this to cause any more work 2657 } 2658 } 2659 return flags; 2660 } 2661 2662 status_t SurfaceFlinger::createLayer( 2663 const String8& name, 2664 const sp<Client>& client, 2665 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 2666 uint32_t windowType, uint32_t ownerUid, sp<IBinder>* handle, 2667 sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent) 2668 { 2669 if (int32_t(w|h) < 0) { 2670 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 2671 int(w), int(h)); 2672 return BAD_VALUE; 2673 } 2674 2675 status_t result = NO_ERROR; 2676 2677 sp<Layer> layer; 2678 2679 String8 uniqueName = getUniqueLayerName(name); 2680 2681 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 2682 case ISurfaceComposerClient::eFXSurfaceNormal: 2683 result = createNormalLayer(client, 2684 uniqueName, w, h, flags, format, 2685 handle, gbp, &layer); 2686 break; 2687 case ISurfaceComposerClient::eFXSurfaceDim: 2688 result = createDimLayer(client, 2689 uniqueName, w, h, flags, 2690 handle, gbp, &layer); 2691 break; 2692 default: 2693 result = BAD_VALUE; 2694 break; 2695 } 2696 2697 if (result != NO_ERROR) { 2698 return result; 2699 } 2700 2701 layer->setInfo(windowType, ownerUid); 2702 2703 result = addClientLayer(client, *handle, *gbp, layer, *parent); 2704 if (result != NO_ERROR) { 2705 return result; 2706 } 2707 mInterceptor.saveSurfaceCreation(layer); 2708 2709 setTransactionFlags(eTransactionNeeded); 2710 return result; 2711 } 2712 2713 String8 SurfaceFlinger::getUniqueLayerName(const String8& name) 2714 { 2715 bool matchFound = true; 2716 uint32_t dupeCounter = 0; 2717 2718 // Tack on our counter whether there is a hit or not, so everyone gets a tag 2719 String8 uniqueName = name + "#" + String8(std::to_string(dupeCounter).c_str()); 2720 2721 // Loop over layers until we're sure there is no matching name 2722 while (matchFound) { 2723 matchFound = false; 2724 mDrawingState.traverseInZOrder([&](Layer* layer) { 2725 if (layer->getName() == uniqueName) { 2726 matchFound = true; 2727 uniqueName = name + "#" + String8(std::to_string(++dupeCounter).c_str()); 2728 } 2729 }); 2730 } 2731 2732 ALOGD_IF(dupeCounter > 0, "duplicate layer name: changing %s to %s", name.c_str(), uniqueName.c_str()); 2733 2734 return uniqueName; 2735 } 2736 2737 status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client, 2738 const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 2739 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 2740 { 2741 // initialize the surfaces 2742 switch (format) { 2743 case PIXEL_FORMAT_TRANSPARENT: 2744 case PIXEL_FORMAT_TRANSLUCENT: 2745 format = PIXEL_FORMAT_RGBA_8888; 2746 break; 2747 case PIXEL_FORMAT_OPAQUE: 2748 format = PIXEL_FORMAT_RGBX_8888; 2749 break; 2750 } 2751 2752 *outLayer = new Layer(this, client, name, w, h, flags); 2753 status_t err = (*outLayer)->setBuffers(w, h, format, flags); 2754 if (err == NO_ERROR) { 2755 *handle = (*outLayer)->getHandle(); 2756 *gbp = (*outLayer)->getProducer(); 2757 } 2758 2759 ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); 2760 return err; 2761 } 2762 2763 status_t SurfaceFlinger::createDimLayer(const sp<Client>& client, 2764 const String8& name, uint32_t w, uint32_t h, uint32_t flags, 2765 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 2766 { 2767 *outLayer = new LayerDim(this, client, name, w, h, flags); 2768 *handle = (*outLayer)->getHandle(); 2769 *gbp = (*outLayer)->getProducer(); 2770 return NO_ERROR; 2771 } 2772 2773 status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle) 2774 { 2775 // called by a client when it wants to remove a Layer 2776 status_t err = NO_ERROR; 2777 sp<Layer> l(client->getLayerUser(handle)); 2778 if (l != NULL) { 2779 mInterceptor.saveSurfaceDeletion(l); 2780 err = removeLayer(l); 2781 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 2782 "error removing layer=%p (%s)", l.get(), strerror(-err)); 2783 } 2784 return err; 2785 } 2786 2787 status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer) 2788 { 2789 // called by ~LayerCleaner() when all references to the IBinder (handle) 2790 // are gone 2791 sp<Layer> l = layer.promote(); 2792 if (l == nullptr) { 2793 // The layer has already been removed, carry on 2794 return NO_ERROR; 2795 } 2796 // If we have a parent, then we can continue to live as long as it does. 2797 return removeLayer(l, true); 2798 } 2799 2800 // --------------------------------------------------------------------------- 2801 2802 void SurfaceFlinger::onInitializeDisplays() { 2803 // reset screen orientation and use primary layer stack 2804 Vector<ComposerState> state; 2805 Vector<DisplayState> displays; 2806 DisplayState d; 2807 d.what = DisplayState::eDisplayProjectionChanged | 2808 DisplayState::eLayerStackChanged; 2809 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2810 d.layerStack = 0; 2811 d.orientation = DisplayState::eOrientationDefault; 2812 d.frame.makeInvalid(); 2813 d.viewport.makeInvalid(); 2814 d.width = 0; 2815 d.height = 0; 2816 displays.add(d); 2817 setTransactionState(state, displays, 0); 2818 setPowerModeInternal(getDisplayDevice(d.token), HWC_POWER_MODE_NORMAL); 2819 2820 const nsecs_t period = 2821 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 2822 mAnimFrameTracker.setDisplayRefreshPeriod(period); 2823 2824 // Use phase of 0 since phase is not known. 2825 // Use latency of 0, which will snap to the ideal latency. 2826 setCompositorTimingSnapped(0, period, 0); 2827 } 2828 2829 void SurfaceFlinger::initializeDisplays() { 2830 class MessageScreenInitialized : public MessageBase { 2831 SurfaceFlinger* flinger; 2832 public: 2833 explicit MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2834 virtual bool handler() { 2835 flinger->onInitializeDisplays(); 2836 return true; 2837 } 2838 }; 2839 sp<MessageBase> msg = new MessageScreenInitialized(this); 2840 postMessageAsync(msg); // we may be called from main thread, use async message 2841 } 2842 2843 void SurfaceFlinger::setPowerModeInternal(const sp<DisplayDevice>& hw, 2844 int mode) { 2845 ALOGD("Set power mode=%d, type=%d flinger=%p", mode, hw->getDisplayType(), 2846 this); 2847 int32_t type = hw->getDisplayType(); 2848 int currentMode = hw->getPowerMode(); 2849 2850 if (mode == currentMode) { 2851 ALOGD("Screen type=%d is already mode=%d", hw->getDisplayType(), mode); 2852 return; 2853 } 2854 2855 hw->setPowerMode(mode); 2856 if (type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) { 2857 ALOGW("Trying to set power mode for virtual display"); 2858 return; 2859 } 2860 2861 if (mInterceptor.isEnabled()) { 2862 Mutex::Autolock _l(mStateLock); 2863 ssize_t idx = mCurrentState.displays.indexOfKey(hw->getDisplayToken()); 2864 if (idx < 0) { 2865 ALOGW("Surface Interceptor SavePowerMode: invalid display token"); 2866 return; 2867 } 2868 mInterceptor.savePowerModeUpdate(mCurrentState.displays.valueAt(idx).displayId, mode); 2869 } 2870 2871 if (currentMode == HWC_POWER_MODE_OFF) { 2872 // Turn on the display 2873 getHwComposer().setPowerMode(type, mode); 2874 if (type == DisplayDevice::DISPLAY_PRIMARY && 2875 mode != HWC_POWER_MODE_DOZE_SUSPEND) { 2876 // FIXME: eventthread only knows about the main display right now 2877 mEventThread->onScreenAcquired(); 2878 resyncToHardwareVsync(true); 2879 } 2880 2881 mVisibleRegionsDirty = true; 2882 mHasPoweredOff = true; 2883 repaintEverything(); 2884 2885 struct sched_param param = {0}; 2886 param.sched_priority = 1; 2887 if (sched_setscheduler(0, SCHED_FIFO, ¶m) != 0) { 2888 ALOGW("Couldn't set SCHED_FIFO on display on"); 2889 } 2890 } else if (mode == HWC_POWER_MODE_OFF) { 2891 // Turn off the display 2892 struct sched_param param = {0}; 2893 if (sched_setscheduler(0, SCHED_OTHER, ¶m) != 0) { 2894 ALOGW("Couldn't set SCHED_OTHER on display off"); 2895 } 2896 2897 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2898 disableHardwareVsync(true); // also cancels any in-progress resync 2899 2900 // FIXME: eventthread only knows about the main display right now 2901 mEventThread->onScreenReleased(); 2902 } 2903 2904 getHwComposer().setPowerMode(type, mode); 2905 mVisibleRegionsDirty = true; 2906 // from this point on, SF will stop drawing on this display 2907 } else if (mode == HWC_POWER_MODE_DOZE || 2908 mode == HWC_POWER_MODE_NORMAL) { 2909 // Update display while dozing 2910 getHwComposer().setPowerMode(type, mode); 2911 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2912 // FIXME: eventthread only knows about the main display right now 2913 mEventThread->onScreenAcquired(); 2914 resyncToHardwareVsync(true); 2915 } 2916 } else if (mode == HWC_POWER_MODE_DOZE_SUSPEND) { 2917 // Leave display going to doze 2918 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2919 disableHardwareVsync(true); // also cancels any in-progress resync 2920 // FIXME: eventthread only knows about the main display right now 2921 mEventThread->onScreenReleased(); 2922 } 2923 getHwComposer().setPowerMode(type, mode); 2924 } else { 2925 ALOGE("Attempting to set unknown power mode: %d\n", mode); 2926 getHwComposer().setPowerMode(type, mode); 2927 } 2928 } 2929 2930 void SurfaceFlinger::setPowerMode(const sp<IBinder>& display, int mode) { 2931 class MessageSetPowerMode: public MessageBase { 2932 SurfaceFlinger& mFlinger; 2933 sp<IBinder> mDisplay; 2934 int mMode; 2935 public: 2936 MessageSetPowerMode(SurfaceFlinger& flinger, 2937 const sp<IBinder>& disp, int mode) : mFlinger(flinger), 2938 mDisplay(disp) { mMode = mode; } 2939 virtual bool handler() { 2940 sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2941 if (hw == NULL) { 2942 ALOGE("Attempt to set power mode = %d for null display %p", 2943 mMode, mDisplay.get()); 2944 } else if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) { 2945 ALOGW("Attempt to set power mode = %d for virtual display", 2946 mMode); 2947 } else { 2948 mFlinger.setPowerModeInternal(hw, mMode); 2949 } 2950 return true; 2951 } 2952 }; 2953 sp<MessageBase> msg = new MessageSetPowerMode(*this, display, mode); 2954 postMessageSync(msg); 2955 } 2956 2957 // --------------------------------------------------------------------------- 2958 2959 status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2960 { 2961 String8 result; 2962 2963 IPCThreadState* ipc = IPCThreadState::self(); 2964 const int pid = ipc->getCallingPid(); 2965 const int uid = ipc->getCallingUid(); 2966 if ((uid != AID_SHELL) && 2967 !PermissionCache::checkPermission(sDump, pid, uid)) { 2968 result.appendFormat("Permission Denial: " 2969 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", pid, uid); 2970 } else { 2971 // Try to get the main lock, but give up after one second 2972 // (this would indicate SF is stuck, but we want to be able to 2973 // print something in dumpsys). 2974 status_t err = mStateLock.timedLock(s2ns(1)); 2975 bool locked = (err == NO_ERROR); 2976 if (!locked) { 2977 result.appendFormat( 2978 "SurfaceFlinger appears to be unresponsive (%s [%d]), " 2979 "dumping anyways (no locks held)\n", strerror(-err), err); 2980 } 2981 2982 bool dumpAll = true; 2983 size_t index = 0; 2984 size_t numArgs = args.size(); 2985 if (numArgs) { 2986 if ((index < numArgs) && 2987 (args[index] == String16("--list"))) { 2988 index++; 2989 listLayersLocked(args, index, result); 2990 dumpAll = false; 2991 } 2992 2993 if ((index < numArgs) && 2994 (args[index] == String16("--latency"))) { 2995 index++; 2996 dumpStatsLocked(args, index, result); 2997 dumpAll = false; 2998 } 2999 3000 if ((index < numArgs) && 3001 (args[index] == String16("--latency-clear"))) { 3002 index++; 3003 clearStatsLocked(args, index, result); 3004 dumpAll = false; 3005 } 3006 3007 if ((index < numArgs) && 3008 (args[index] == String16("--dispsync"))) { 3009 index++; 3010 mPrimaryDispSync.dump(result); 3011 dumpAll = false; 3012 } 3013 3014 if ((index < numArgs) && 3015 (args[index] == String16("--static-screen"))) { 3016 index++; 3017 dumpStaticScreenStats(result); 3018 dumpAll = false; 3019 } 3020 3021 if ((index < numArgs) && 3022 (args[index] == String16("--frame-events"))) { 3023 index++; 3024 dumpFrameEventsLocked(result); 3025 dumpAll = false; 3026 } 3027 } 3028 3029 if (dumpAll) { 3030 dumpAllLocked(args, index, result); 3031 } 3032 3033 if (locked) { 3034 mStateLock.unlock(); 3035 } 3036 } 3037 write(fd, result.string(), result.size()); 3038 return NO_ERROR; 3039 } 3040 3041 void SurfaceFlinger::listLayersLocked(const Vector<String16>& /* args */, 3042 size_t& /* index */, String8& result) const 3043 { 3044 mCurrentState.traverseInZOrder([&](Layer* layer) { 3045 result.appendFormat("%s\n", layer->getName().string()); 3046 }); 3047 } 3048 3049 void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 3050 String8& result) const 3051 { 3052 String8 name; 3053 if (index < args.size()) { 3054 name = String8(args[index]); 3055 index++; 3056 } 3057 3058 const nsecs_t period = 3059 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 3060 result.appendFormat("%" PRId64 "\n", period); 3061 3062 if (name.isEmpty()) { 3063 mAnimFrameTracker.dumpStats(result); 3064 } else { 3065 mCurrentState.traverseInZOrder([&](Layer* layer) { 3066 if (name == layer->getName()) { 3067 layer->dumpFrameStats(result); 3068 } 3069 }); 3070 } 3071 } 3072 3073 void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 3074 String8& /* result */) 3075 { 3076 String8 name; 3077 if (index < args.size()) { 3078 name = String8(args[index]); 3079 index++; 3080 } 3081 3082 mCurrentState.traverseInZOrder([&](Layer* layer) { 3083 if (name.isEmpty() || (name == layer->getName())) { 3084 layer->clearFrameStats(); 3085 } 3086 }); 3087 3088 mAnimFrameTracker.clearStats(); 3089 } 3090 3091 // This should only be called from the main thread. Otherwise it would need 3092 // the lock and should use mCurrentState rather than mDrawingState. 3093 void SurfaceFlinger::logFrameStats() { 3094 mDrawingState.traverseInZOrder([&](Layer* layer) { 3095 layer->logFrameStats(); 3096 }); 3097 3098 mAnimFrameTracker.logAndResetStats(String8("<win-anim>")); 3099 } 3100 3101 void SurfaceFlinger::appendSfConfigString(String8& result) const 3102 { 3103 result.append(" [sf"); 3104 result.appendFormat(" HAS_CONTEXT_PRIORITY=%d", useContextPriority); 3105 3106 if (isLayerTripleBufferingDisabled()) 3107 result.append(" DISABLE_TRIPLE_BUFFERING"); 3108 3109 result.appendFormat(" PRESENT_TIME_OFFSET=%" PRId64, dispSyncPresentTimeOffset); 3110 result.appendFormat(" FORCE_HWC_FOR_RBG_TO_YUV=%d", useHwcForRgbToYuv); 3111 result.appendFormat(" MAX_VIRT_DISPLAY_DIM=%" PRIu64, maxVirtualDisplaySize); 3112 result.appendFormat(" RUNNING_WITHOUT_SYNC_FRAMEWORK=%d", !hasSyncFramework); 3113 result.appendFormat(" NUM_FRAMEBUFFER_SURFACE_BUFFERS=%" PRId64, 3114 maxFrameBufferAcquiredBuffers); 3115 result.append("]"); 3116 } 3117 3118 void SurfaceFlinger::dumpStaticScreenStats(String8& result) const 3119 { 3120 result.appendFormat("Static screen stats:\n"); 3121 for (size_t b = 0; b < NUM_BUCKETS - 1; ++b) { 3122 float bucketTimeSec = mFrameBuckets[b] / 1e9; 3123 float percent = 100.0f * 3124 static_cast<float>(mFrameBuckets[b]) / mTotalTime; 3125 result.appendFormat(" < %zd frames: %.3f s (%.1f%%)\n", 3126 b + 1, bucketTimeSec, percent); 3127 } 3128 float bucketTimeSec = mFrameBuckets[NUM_BUCKETS - 1] / 1e9; 3129 float percent = 100.0f * 3130 static_cast<float>(mFrameBuckets[NUM_BUCKETS - 1]) / mTotalTime; 3131 result.appendFormat(" %zd+ frames: %.3f s (%.1f%%)\n", 3132 NUM_BUCKETS - 1, bucketTimeSec, percent); 3133 } 3134 3135 void SurfaceFlinger::dumpFrameEventsLocked(String8& result) { 3136 result.appendFormat("Layer frame timestamps:\n"); 3137 3138 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 3139 const size_t count = currentLayers.size(); 3140 for (size_t i=0 ; i<count ; i++) { 3141 currentLayers[i]->dumpFrameEvents(result); 3142 } 3143 } 3144 3145 void SurfaceFlinger::recordBufferingStats(const char* layerName, 3146 std::vector<OccupancyTracker::Segment>&& history) { 3147 Mutex::Autolock lock(mBufferingStatsMutex); 3148 auto& stats = mBufferingStats[layerName]; 3149 for (const auto& segment : history) { 3150 if (!segment.usedThirdBuffer) { 3151 stats.twoBufferTime += segment.totalTime; 3152 } 3153 if (segment.occupancyAverage < 1.0f) { 3154 stats.doubleBufferedTime += segment.totalTime; 3155 } else if (segment.occupancyAverage < 2.0f) { 3156 stats.tripleBufferedTime += segment.totalTime; 3157 } 3158 ++stats.numSegments; 3159 stats.totalTime += segment.totalTime; 3160 } 3161 } 3162 3163 void SurfaceFlinger::dumpBufferingStats(String8& result) const { 3164 result.append("Buffering stats:\n"); 3165 result.append(" [Layer name] <Active time> <Two buffer> " 3166 "<Double buffered> <Triple buffered>\n"); 3167 Mutex::Autolock lock(mBufferingStatsMutex); 3168 typedef std::tuple<std::string, float, float, float> BufferTuple; 3169 std::map<float, BufferTuple, std::greater<float>> sorted; 3170 for (const auto& statsPair : mBufferingStats) { 3171 const char* name = statsPair.first.c_str(); 3172 const BufferingStats& stats = statsPair.second; 3173 if (stats.numSegments == 0) { 3174 continue; 3175 } 3176 float activeTime = ns2ms(stats.totalTime) / 1000.0f; 3177 float twoBufferRatio = static_cast<float>(stats.twoBufferTime) / 3178 stats.totalTime; 3179 float doubleBufferRatio = static_cast<float>( 3180 stats.doubleBufferedTime) / stats.totalTime; 3181 float tripleBufferRatio = static_cast<float>( 3182 stats.tripleBufferedTime) / stats.totalTime; 3183 sorted.insert({activeTime, {name, twoBufferRatio, 3184 doubleBufferRatio, tripleBufferRatio}}); 3185 } 3186 for (const auto& sortedPair : sorted) { 3187 float activeTime = sortedPair.first; 3188 const BufferTuple& values = sortedPair.second; 3189 result.appendFormat(" [%s] %.2f %.3f %.3f %.3f\n", 3190 std::get<0>(values).c_str(), activeTime, 3191 std::get<1>(values), std::get<2>(values), 3192 std::get<3>(values)); 3193 } 3194 result.append("\n"); 3195 } 3196 3197 void SurfaceFlinger::dumpAllLocked(const Vector<String16>& args, size_t& index, 3198 String8& result) const 3199 { 3200 bool colorize = false; 3201 if (index < args.size() 3202 && (args[index] == String16("--color"))) { 3203 colorize = true; 3204 index++; 3205 } 3206 3207 Colorizer colorizer(colorize); 3208 3209 // figure out if we're stuck somewhere 3210 const nsecs_t now = systemTime(); 3211 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 3212 const nsecs_t inTransaction(mDebugInTransaction); 3213 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 3214 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 3215 3216 /* 3217 * Dump library configuration. 3218 */ 3219 3220 colorizer.bold(result); 3221 result.append("Build configuration:"); 3222 colorizer.reset(result); 3223 appendSfConfigString(result); 3224 appendUiConfigString(result); 3225 appendGuiConfigString(result); 3226 result.append("\n"); 3227 3228 colorizer.bold(result); 3229 result.append("Sync configuration: "); 3230 colorizer.reset(result); 3231 result.append(SyncFeatures::getInstance().toString()); 3232 result.append("\n"); 3233 3234 colorizer.bold(result); 3235 result.append("DispSync configuration: "); 3236 colorizer.reset(result); 3237 result.appendFormat("app phase %" PRId64 " ns, sf phase %" PRId64 " ns, " 3238 "present offset %" PRId64 " ns (refresh %" PRId64 " ns)", 3239 vsyncPhaseOffsetNs, sfVsyncPhaseOffsetNs, dispSyncPresentTimeOffset, 3240 mHwc->getRefreshPeriod(HWC_DISPLAY_PRIMARY)); 3241 result.append("\n"); 3242 3243 // Dump static screen stats 3244 result.append("\n"); 3245 dumpStaticScreenStats(result); 3246 result.append("\n"); 3247 3248 dumpBufferingStats(result); 3249 3250 /* 3251 * Dump the visible layer list 3252 */ 3253 colorizer.bold(result); 3254 result.appendFormat("Visible layers (count = %zu)\n", mNumLayers); 3255 colorizer.reset(result); 3256 mCurrentState.traverseInZOrder([&](Layer* layer) { 3257 layer->dump(result, colorizer); 3258 }); 3259 3260 /* 3261 * Dump Display state 3262 */ 3263 3264 colorizer.bold(result); 3265 result.appendFormat("Displays (%zu entries)\n", mDisplays.size()); 3266 colorizer.reset(result); 3267 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 3268 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 3269 hw->dump(result); 3270 } 3271 3272 /* 3273 * Dump SurfaceFlinger global state 3274 */ 3275 3276 colorizer.bold(result); 3277 result.append("SurfaceFlinger global state:\n"); 3278 colorizer.reset(result); 3279 3280 HWComposer& hwc(getHwComposer()); 3281 sp<const DisplayDevice> hw(getDefaultDisplayDeviceLocked()); 3282 3283 colorizer.bold(result); 3284 result.appendFormat("EGL implementation : %s\n", 3285 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_VERSION)); 3286 colorizer.reset(result); 3287 result.appendFormat("%s\n", 3288 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_EXTENSIONS)); 3289 3290 mRenderEngine->dump(result); 3291 3292 hw->undefinedRegion.dump(result, "undefinedRegion"); 3293 result.appendFormat(" orientation=%d, isDisplayOn=%d\n", 3294 hw->getOrientation(), hw->isDisplayOn()); 3295 result.appendFormat( 3296 " last eglSwapBuffers() time: %f us\n" 3297 " last transaction time : %f us\n" 3298 " transaction-flags : %08x\n" 3299 " refresh-rate : %f fps\n" 3300 " x-dpi : %f\n" 3301 " y-dpi : %f\n" 3302 " gpu_to_cpu_unsupported : %d\n" 3303 , 3304 mLastSwapBufferTime/1000.0, 3305 mLastTransactionTime/1000.0, 3306 mTransactionFlags, 3307 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 3308 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 3309 hwc.getDpiY(HWC_DISPLAY_PRIMARY), 3310 !mGpuToCpuSupported); 3311 3312 result.appendFormat(" eglSwapBuffers time: %f us\n", 3313 inSwapBuffersDuration/1000.0); 3314 3315 result.appendFormat(" transaction time: %f us\n", 3316 inTransactionDuration/1000.0); 3317 3318 /* 3319 * VSYNC state 3320 */ 3321 mEventThread->dump(result); 3322 3323 /* 3324 * Dump HWComposer state 3325 */ 3326 colorizer.bold(result); 3327 result.append("h/w composer state:\n"); 3328 colorizer.reset(result); 3329 result.appendFormat(" h/w composer %s and %s\n", 3330 hwc.initCheck()==NO_ERROR ? "present" : "not present", 3331 (mDebugDisableHWC || mDebugRegion || mDaltonize 3332 || mHasColorMatrix) ? "disabled" : "enabled"); 3333 hwc.dump(result); 3334 3335 /* 3336 * Dump gralloc state 3337 */ 3338 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 3339 alloc.dump(result); 3340 } 3341 3342 const Vector< sp<Layer> >& 3343 SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { 3344 // Note: mStateLock is held here 3345 wp<IBinder> dpy; 3346 for (size_t i=0 ; i<mDisplays.size() ; i++) { 3347 if (mDisplays.valueAt(i)->getHwcDisplayId() == id) { 3348 dpy = mDisplays.keyAt(i); 3349 break; 3350 } 3351 } 3352 if (dpy == NULL) { 3353 ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); 3354 // Just use the primary display so we have something to return 3355 dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); 3356 } 3357 return getDisplayDeviceLocked(dpy)->getVisibleLayersSortedByZ(); 3358 } 3359 3360 bool SurfaceFlinger::startDdmConnection() 3361 { 3362 void* libddmconnection_dso = 3363 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 3364 if (!libddmconnection_dso) { 3365 return false; 3366 } 3367 void (*DdmConnection_start)(const char* name); 3368 DdmConnection_start = 3369 (decltype(DdmConnection_start))dlsym(libddmconnection_dso, "DdmConnection_start"); 3370 if (!DdmConnection_start) { 3371 dlclose(libddmconnection_dso); 3372 return false; 3373 } 3374 (*DdmConnection_start)(getServiceName()); 3375 return true; 3376 } 3377 3378 status_t SurfaceFlinger::onTransact( 3379 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 3380 { 3381 switch (code) { 3382 case CREATE_CONNECTION: 3383 case CREATE_DISPLAY: 3384 case BOOT_FINISHED: 3385 case CLEAR_ANIMATION_FRAME_STATS: 3386 case GET_ANIMATION_FRAME_STATS: 3387 case SET_POWER_MODE: 3388 case GET_HDR_CAPABILITIES: 3389 { 3390 // codes that require permission check 3391 IPCThreadState* ipc = IPCThreadState::self(); 3392 const int pid = ipc->getCallingPid(); 3393 const int uid = ipc->getCallingUid(); 3394 if ((uid != AID_GRAPHICS && uid != AID_SYSTEM) && 3395 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 3396 ALOGE("Permission Denial: " 3397 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 3398 return PERMISSION_DENIED; 3399 } 3400 break; 3401 } 3402 /* 3403 * Calling setTransactionState is safe, because you need to have been 3404 * granted a reference to Client* and Handle* to do anything with it. 3405 * 3406 * Creating a scoped connection is safe, as per discussion in ISurfaceComposer.h 3407 */ 3408 case SET_TRANSACTION_STATE: 3409 case CREATE_SCOPED_CONNECTION: 3410 { 3411 break; 3412 } 3413 case CAPTURE_SCREEN: 3414 { 3415 // codes that require permission check 3416 IPCThreadState* ipc = IPCThreadState::self(); 3417 const int pid = ipc->getCallingPid(); 3418 const int uid = ipc->getCallingUid(); 3419 if ((uid != AID_GRAPHICS) && 3420 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 3421 ALOGE("Permission Denial: " 3422 "can't read framebuffer pid=%d, uid=%d", pid, uid); 3423 return PERMISSION_DENIED; 3424 } 3425 break; 3426 } 3427 } 3428 3429 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 3430 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 3431 CHECK_INTERFACE(ISurfaceComposer, data, reply); 3432 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 3433 IPCThreadState* ipc = IPCThreadState::self(); 3434 const int pid = ipc->getCallingPid(); 3435 const int uid = ipc->getCallingUid(); 3436 ALOGE("Permission Denial: " 3437 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 3438 return PERMISSION_DENIED; 3439 } 3440 int n; 3441 switch (code) { 3442 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 3443 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 3444 return NO_ERROR; 3445 case 1002: // SHOW_UPDATES 3446 n = data.readInt32(); 3447 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 3448 invalidateHwcGeometry(); 3449 repaintEverything(); 3450 return NO_ERROR; 3451 case 1004:{ // repaint everything 3452 repaintEverything(); 3453 return NO_ERROR; 3454 } 3455 case 1005:{ // force transaction 3456 setTransactionFlags( 3457 eTransactionNeeded| 3458 eDisplayTransactionNeeded| 3459 eTraversalNeeded); 3460 return NO_ERROR; 3461 } 3462 case 1006:{ // send empty update 3463 signalRefresh(); 3464 return NO_ERROR; 3465 } 3466 case 1008: // toggle use of hw composer 3467 n = data.readInt32(); 3468 mDebugDisableHWC = n ? 1 : 0; 3469 invalidateHwcGeometry(); 3470 repaintEverything(); 3471 return NO_ERROR; 3472 case 1009: // toggle use of transform hint 3473 n = data.readInt32(); 3474 mDebugDisableTransformHint = n ? 1 : 0; 3475 invalidateHwcGeometry(); 3476 repaintEverything(); 3477 return NO_ERROR; 3478 case 1010: // interrogate. 3479 reply->writeInt32(0); 3480 reply->writeInt32(0); 3481 reply->writeInt32(mDebugRegion); 3482 reply->writeInt32(0); 3483 reply->writeInt32(mDebugDisableHWC); 3484 return NO_ERROR; 3485 case 1013: { 3486 Mutex::Autolock _l(mStateLock); 3487 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 3488 reply->writeInt32(hw->getPageFlipCount()); 3489 return NO_ERROR; 3490 } 3491 case 1014: { 3492 // daltonize 3493 n = data.readInt32(); 3494 switch (n % 10) { 3495 case 1: 3496 mDaltonizer.setType(ColorBlindnessType::Protanomaly); 3497 break; 3498 case 2: 3499 mDaltonizer.setType(ColorBlindnessType::Deuteranomaly); 3500 break; 3501 case 3: 3502 mDaltonizer.setType(ColorBlindnessType::Tritanomaly); 3503 break; 3504 } 3505 if (n >= 10) { 3506 mDaltonizer.setMode(ColorBlindnessMode::Correction); 3507 } else { 3508 mDaltonizer.setMode(ColorBlindnessMode::Simulation); 3509 } 3510 mDaltonize = n > 0; 3511 invalidateHwcGeometry(); 3512 repaintEverything(); 3513 return NO_ERROR; 3514 } 3515 case 1015: { 3516 // apply a color matrix 3517 n = data.readInt32(); 3518 mHasColorMatrix = n ? 1 : 0; 3519 if (n) { 3520 // color matrix is sent as mat3 matrix followed by vec3 3521 // offset, then packed into a mat4 where the last row is 3522 // the offset and extra values are 0 3523 for (size_t i = 0 ; i < 4; i++) { 3524 for (size_t j = 0; j < 4; j++) { 3525 mColorMatrix[i][j] = data.readFloat(); 3526 } 3527 } 3528 } else { 3529 mColorMatrix = mat4(); 3530 } 3531 invalidateHwcGeometry(); 3532 repaintEverything(); 3533 return NO_ERROR; 3534 } 3535 // This is an experimental interface 3536 // Needs to be shifted to proper binder interface when we productize 3537 case 1016: { 3538 n = data.readInt32(); 3539 mPrimaryDispSync.setRefreshSkipCount(n); 3540 return NO_ERROR; 3541 } 3542 case 1017: { 3543 n = data.readInt32(); 3544 mForceFullDamage = static_cast<bool>(n); 3545 return NO_ERROR; 3546 } 3547 case 1018: { // Modify Choreographer's phase offset 3548 n = data.readInt32(); 3549 mEventThread->setPhaseOffset(static_cast<nsecs_t>(n)); 3550 return NO_ERROR; 3551 } 3552 case 1019: { // Modify SurfaceFlinger's phase offset 3553 n = data.readInt32(); 3554 mSFEventThread->setPhaseOffset(static_cast<nsecs_t>(n)); 3555 return NO_ERROR; 3556 } 3557 case 1020: { // Layer updates interceptor 3558 n = data.readInt32(); 3559 if (n) { 3560 ALOGV("Interceptor enabled"); 3561 mInterceptor.enable(mDrawingState.layersSortedByZ, mDrawingState.displays); 3562 } 3563 else{ 3564 ALOGV("Interceptor disabled"); 3565 mInterceptor.disable(); 3566 } 3567 return NO_ERROR; 3568 } 3569 case 1021: { // Disable HWC virtual displays 3570 n = data.readInt32(); 3571 mUseHwcVirtualDisplays = !n; 3572 return NO_ERROR; 3573 } 3574 } 3575 } 3576 return err; 3577 } 3578 3579 void SurfaceFlinger::repaintEverything() { 3580 android_atomic_or(1, &mRepaintEverything); 3581 signalTransaction(); 3582 } 3583 3584 // --------------------------------------------------------------------------- 3585 // Capture screen into an IGraphiBufferProducer 3586 // --------------------------------------------------------------------------- 3587 3588 /* The code below is here to handle b/8734824 3589 * 3590 * We create a IGraphicBufferProducer wrapper that forwards all calls 3591 * from the surfaceflinger thread to the calling binder thread, where they 3592 * are executed. This allows the calling thread in the calling process to be 3593 * reused and not depend on having "enough" binder threads to handle the 3594 * requests. 3595 */ 3596 class GraphicProducerWrapper : public BBinder, public MessageHandler { 3597 /* Parts of GraphicProducerWrapper are run on two different threads, 3598 * communicating by sending messages via Looper but also by shared member 3599 * data. Coherence maintenance is subtle and in places implicit (ugh). 3600 * 3601 * Don't rely on Looper's sendMessage/handleMessage providing 3602 * release/acquire semantics for any data not actually in the Message. 3603 * Data going from surfaceflinger to binder threads needs to be 3604 * synchronized explicitly. 3605 * 3606 * Barrier open/wait do provide release/acquire semantics. This provides 3607 * implicit synchronization for data coming back from binder to 3608 * surfaceflinger threads. 3609 */ 3610 3611 sp<IGraphicBufferProducer> impl; 3612 sp<Looper> looper; 3613 status_t result; 3614 bool exitPending; 3615 bool exitRequested; 3616 Barrier barrier; 3617 uint32_t code; 3618 Parcel const* data; 3619 Parcel* reply; 3620 3621 enum { 3622 MSG_API_CALL, 3623 MSG_EXIT 3624 }; 3625 3626 /* 3627 * Called on surfaceflinger thread. This is called by our "fake" 3628 * BpGraphicBufferProducer. We package the data and reply Parcel and 3629 * forward them to the binder thread. 3630 */ 3631 virtual status_t transact(uint32_t code, 3632 const Parcel& data, Parcel* reply, uint32_t /* flags */) { 3633 this->code = code; 3634 this->data = &data; 3635 this->reply = reply; 3636 if (exitPending) { 3637 // if we've exited, we run the message synchronously right here. 3638 // note (JH): as far as I can tell from looking at the code, this 3639 // never actually happens. if it does, i'm not sure if it happens 3640 // on the surfaceflinger or binder thread. 3641 handleMessage(Message(MSG_API_CALL)); 3642 } else { 3643 barrier.close(); 3644 // Prevent stores to this->{code, data, reply} from being 3645 // reordered later than the construction of Message. 3646 atomic_thread_fence(memory_order_release); 3647 looper->sendMessage(this, Message(MSG_API_CALL)); 3648 barrier.wait(); 3649 } 3650 return result; 3651 } 3652 3653 /* 3654 * here we run on the binder thread. All we've got to do is 3655 * call the real BpGraphicBufferProducer. 3656 */ 3657 virtual void handleMessage(const Message& message) { 3658 int what = message.what; 3659 // Prevent reads below from happening before the read from Message 3660 atomic_thread_fence(memory_order_acquire); 3661 if (what == MSG_API_CALL) { 3662 result = IInterface::asBinder(impl)->transact(code, data[0], reply); 3663 barrier.open(); 3664 } else if (what == MSG_EXIT) { 3665 exitRequested = true; 3666 } 3667 } 3668 3669 public: 3670 explicit GraphicProducerWrapper(const sp<IGraphicBufferProducer>& impl) 3671 : impl(impl), 3672 looper(new Looper(true)), 3673 result(NO_ERROR), 3674 exitPending(false), 3675 exitRequested(false), 3676 code(0), 3677 data(NULL), 3678 reply(NULL) 3679 {} 3680 3681 // Binder thread 3682 status_t waitForResponse() { 3683 do { 3684 looper->pollOnce(-1); 3685 } while (!exitRequested); 3686 return result; 3687 } 3688 3689 // Client thread 3690 void exit(status_t result) { 3691 this->result = result; 3692 exitPending = true; 3693 // Ensure this->result is visible to the binder thread before it 3694 // handles the message. 3695 atomic_thread_fence(memory_order_release); 3696 looper->sendMessage(this, Message(MSG_EXIT)); 3697 } 3698 }; 3699 3700 3701 status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 3702 const sp<IGraphicBufferProducer>& producer, 3703 Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight, 3704 int32_t minLayerZ, int32_t maxLayerZ, 3705 bool useIdentityTransform, ISurfaceComposer::Rotation rotation) { 3706 3707 if (CC_UNLIKELY(display == 0)) 3708 return BAD_VALUE; 3709 3710 if (CC_UNLIKELY(producer == 0)) 3711 return BAD_VALUE; 3712 3713 // if we have secure windows on this display, never allow the screen capture 3714 // unless the producer interface is local (i.e.: we can take a screenshot for 3715 // ourselves). 3716 bool isLocalScreenshot = IInterface::asBinder(producer)->localBinder(); 3717 3718 // Convert to surfaceflinger's internal rotation type. 3719 Transform::orientation_flags rotationFlags; 3720 switch (rotation) { 3721 case ISurfaceComposer::eRotateNone: 3722 rotationFlags = Transform::ROT_0; 3723 break; 3724 case ISurfaceComposer::eRotate90: 3725 rotationFlags = Transform::ROT_90; 3726 break; 3727 case ISurfaceComposer::eRotate180: 3728 rotationFlags = Transform::ROT_180; 3729 break; 3730 case ISurfaceComposer::eRotate270: 3731 rotationFlags = Transform::ROT_270; 3732 break; 3733 default: 3734 rotationFlags = Transform::ROT_0; 3735 ALOGE("Invalid rotation passed to captureScreen(): %d\n", rotation); 3736 break; 3737 } 3738 3739 class MessageCaptureScreen : public MessageBase { 3740 SurfaceFlinger* flinger; 3741 sp<IBinder> display; 3742 sp<IGraphicBufferProducer> producer; 3743 Rect sourceCrop; 3744 uint32_t reqWidth, reqHeight; 3745 int32_t minLayerZ,maxLayerZ; 3746 bool useIdentityTransform; 3747 Transform::orientation_flags rotation; 3748 status_t result; 3749 bool isLocalScreenshot; 3750 public: 3751 MessageCaptureScreen(SurfaceFlinger* flinger, 3752 const sp<IBinder>& display, 3753 const sp<IGraphicBufferProducer>& producer, 3754 Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight, 3755 int32_t minLayerZ, int32_t maxLayerZ, 3756 bool useIdentityTransform, 3757 Transform::orientation_flags rotation, 3758 bool isLocalScreenshot) 3759 : flinger(flinger), display(display), producer(producer), 3760 sourceCrop(sourceCrop), reqWidth(reqWidth), reqHeight(reqHeight), 3761 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 3762 useIdentityTransform(useIdentityTransform), 3763 rotation(rotation), result(PERMISSION_DENIED), 3764 isLocalScreenshot(isLocalScreenshot) 3765 { 3766 } 3767 status_t getResult() const { 3768 return result; 3769 } 3770 virtual bool handler() { 3771 Mutex::Autolock _l(flinger->mStateLock); 3772 sp<const DisplayDevice> hw(flinger->getDisplayDeviceLocked(display)); 3773 result = flinger->captureScreenImplLocked(hw, producer, 3774 sourceCrop, reqWidth, reqHeight, minLayerZ, maxLayerZ, 3775 useIdentityTransform, rotation, isLocalScreenshot); 3776 static_cast<GraphicProducerWrapper*>(IInterface::asBinder(producer).get())->exit(result); 3777 return true; 3778 } 3779 }; 3780 3781 // this creates a "fake" BBinder which will serve as a "fake" remote 3782 // binder to receive the marshaled calls and forward them to the 3783 // real remote (a BpGraphicBufferProducer) 3784 sp<GraphicProducerWrapper> wrapper = new GraphicProducerWrapper(producer); 3785 3786 // the asInterface() call below creates our "fake" BpGraphicBufferProducer 3787 // which does the marshaling work forwards to our "fake remote" above. 3788 sp<MessageBase> msg = new MessageCaptureScreen(this, 3789 display, IGraphicBufferProducer::asInterface( wrapper ), 3790 sourceCrop, reqWidth, reqHeight, minLayerZ, maxLayerZ, 3791 useIdentityTransform, rotationFlags, isLocalScreenshot); 3792 3793 status_t res = postMessageAsync(msg); 3794 if (res == NO_ERROR) { 3795 res = wrapper->waitForResponse(); 3796 } 3797 return res; 3798 } 3799 3800 3801 void SurfaceFlinger::renderScreenImplLocked( 3802 const sp<const DisplayDevice>& hw, 3803 Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight, 3804 int32_t minLayerZ, int32_t maxLayerZ, 3805 bool yswap, bool useIdentityTransform, Transform::orientation_flags rotation) 3806 { 3807 ATRACE_CALL(); 3808 RenderEngine& engine(getRenderEngine()); 3809 3810 // get screen geometry 3811 const int32_t hw_w = hw->getWidth(); 3812 const int32_t hw_h = hw->getHeight(); 3813 const bool filtering = static_cast<int32_t>(reqWidth) != hw_w || 3814 static_cast<int32_t>(reqHeight) != hw_h; 3815 3816 // if a default or invalid sourceCrop is passed in, set reasonable values 3817 if (sourceCrop.width() == 0 || sourceCrop.height() == 0 || 3818 !sourceCrop.isValid()) { 3819 sourceCrop.setLeftTop(Point(0, 0)); 3820 sourceCrop.setRightBottom(Point(hw_w, hw_h)); 3821 } 3822 3823 // ensure that sourceCrop is inside screen 3824 if (sourceCrop.left < 0) { 3825 ALOGE("Invalid crop rect: l = %d (< 0)", sourceCrop.left); 3826 } 3827 if (sourceCrop.right > hw_w) { 3828 ALOGE("Invalid crop rect: r = %d (> %d)", sourceCrop.right, hw_w); 3829 } 3830 if (sourceCrop.top < 0) { 3831 ALOGE("Invalid crop rect: t = %d (< 0)", sourceCrop.top); 3832 } 3833 if (sourceCrop.bottom > hw_h) { 3834 ALOGE("Invalid crop rect: b = %d (> %d)", sourceCrop.bottom, hw_h); 3835 } 3836 3837 // make sure to clear all GL error flags 3838 engine.checkErrors(); 3839 3840 // set-up our viewport 3841 engine.setViewportAndProjection( 3842 reqWidth, reqHeight, sourceCrop, hw_h, yswap, rotation); 3843 engine.disableTexturing(); 3844 3845 // redraw the screen entirely... 3846 engine.clearWithColor(0, 0, 0, 1); 3847 3848 // We loop through the first level of layers without traversing, 3849 // as we need to interpret min/max layer Z in the top level Z space. 3850 for (const auto& layer : mDrawingState.layersSortedByZ) { 3851 if (layer->getLayerStack() != hw->getLayerStack()) { 3852 continue; 3853 } 3854 const Layer::State& state(layer->getDrawingState()); 3855 if (state.z < minLayerZ || state.z > maxLayerZ) { 3856 continue; 3857 } 3858 layer->traverseInZOrder(LayerVector::StateSet::Drawing, [&](Layer* layer) { 3859 if (!layer->isVisible()) { 3860 return; 3861 } 3862 if (filtering) layer->setFiltering(true); 3863 layer->draw(hw, useIdentityTransform); 3864 if (filtering) layer->setFiltering(false); 3865 }); 3866 } 3867 3868 // compositionComplete is needed for older driver 3869 hw->compositionComplete(); 3870 hw->setViewportAndProjection(); 3871 } 3872 3873 3874 status_t SurfaceFlinger::captureScreenImplLocked( 3875 const sp<const DisplayDevice>& hw, 3876 const sp<IGraphicBufferProducer>& producer, 3877 Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight, 3878 int32_t minLayerZ, int32_t maxLayerZ, 3879 bool useIdentityTransform, Transform::orientation_flags rotation, 3880 bool isLocalScreenshot) 3881 { 3882 ATRACE_CALL(); 3883 3884 // get screen geometry 3885 uint32_t hw_w = hw->getWidth(); 3886 uint32_t hw_h = hw->getHeight(); 3887 3888 if (rotation & Transform::ROT_90) { 3889 std::swap(hw_w, hw_h); 3890 } 3891 3892 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 3893 ALOGE("size mismatch (%d, %d) > (%d, %d)", 3894 reqWidth, reqHeight, hw_w, hw_h); 3895 return BAD_VALUE; 3896 } 3897 3898 reqWidth = (!reqWidth) ? hw_w : reqWidth; 3899 reqHeight = (!reqHeight) ? hw_h : reqHeight; 3900 3901 bool secureLayerIsVisible = false; 3902 for (const auto& layer : mDrawingState.layersSortedByZ) { 3903 const Layer::State& state(layer->getDrawingState()); 3904 if ((layer->getLayerStack() != hw->getLayerStack()) || 3905 (state.z < minLayerZ || state.z > maxLayerZ)) { 3906 continue; 3907 } 3908 layer->traverseInZOrder(LayerVector::StateSet::Drawing, [&](Layer *layer) { 3909 secureLayerIsVisible = secureLayerIsVisible || (layer->isVisible() && 3910 layer->isSecure()); 3911 }); 3912 } 3913 3914 if (!isLocalScreenshot && secureLayerIsVisible) { 3915 ALOGW("FB is protected: PERMISSION_DENIED"); 3916 return PERMISSION_DENIED; 3917 } 3918 3919 // create a surface (because we're a producer, and we need to 3920 // dequeue/queue a buffer) 3921 sp<Surface> sur = new Surface(producer, false); 3922 ANativeWindow* window = sur.get(); 3923 3924 status_t result = native_window_api_connect(window, NATIVE_WINDOW_API_EGL); 3925 if (result == NO_ERROR) { 3926 uint32_t usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN | 3927 GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE; 3928 3929 int err = 0; 3930 err = native_window_set_buffers_dimensions(window, reqWidth, reqHeight); 3931 err |= native_window_set_scaling_mode(window, NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW); 3932 err |= native_window_set_buffers_format(window, HAL_PIXEL_FORMAT_RGBA_8888); 3933 err |= native_window_set_usage(window, usage); 3934 3935 if (err == NO_ERROR) { 3936 ANativeWindowBuffer* buffer; 3937 /* TODO: Once we have the sync framework everywhere this can use 3938 * server-side waits on the fence that dequeueBuffer returns. 3939 */ 3940 result = native_window_dequeue_buffer_and_wait(window, &buffer); 3941 if (result == NO_ERROR) { 3942 int syncFd = -1; 3943 // create an EGLImage from the buffer so we can later 3944 // turn it into a texture 3945 EGLImageKHR image = eglCreateImageKHR(mEGLDisplay, EGL_NO_CONTEXT, 3946 EGL_NATIVE_BUFFER_ANDROID, buffer, NULL); 3947 if (image != EGL_NO_IMAGE_KHR) { 3948 // this binds the given EGLImage as a framebuffer for the 3949 // duration of this scope. 3950 RenderEngine::BindImageAsFramebuffer imageBond(getRenderEngine(), image); 3951 if (imageBond.getStatus() == NO_ERROR) { 3952 // this will in fact render into our dequeued buffer 3953 // via an FBO, which means we didn't have to create 3954 // an EGLSurface and therefore we're not 3955 // dependent on the context's EGLConfig. 3956 renderScreenImplLocked( 3957 hw, sourceCrop, reqWidth, reqHeight, minLayerZ, maxLayerZ, true, 3958 useIdentityTransform, rotation); 3959 3960 // Attempt to create a sync khr object that can produce a sync point. If that 3961 // isn't available, create a non-dupable sync object in the fallback path and 3962 // wait on it directly. 3963 EGLSyncKHR sync; 3964 if (!DEBUG_SCREENSHOTS) { 3965 sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, NULL); 3966 // native fence fd will not be populated until flush() is done. 3967 getRenderEngine().flush(); 3968 } else { 3969 sync = EGL_NO_SYNC_KHR; 3970 } 3971 if (sync != EGL_NO_SYNC_KHR) { 3972 // get the sync fd 3973 syncFd = eglDupNativeFenceFDANDROID(mEGLDisplay, sync); 3974 if (syncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) { 3975 ALOGW("captureScreen: failed to dup sync khr object"); 3976 syncFd = -1; 3977 } 3978 eglDestroySyncKHR(mEGLDisplay, sync); 3979 } else { 3980 // fallback path 3981 sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_FENCE_KHR, NULL); 3982 if (sync != EGL_NO_SYNC_KHR) { 3983 EGLint result = eglClientWaitSyncKHR(mEGLDisplay, sync, 3984 EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, 2000000000 /*2 sec*/); 3985 EGLint eglErr = eglGetError(); 3986 if (result == EGL_TIMEOUT_EXPIRED_KHR) { 3987 ALOGW("captureScreen: fence wait timed out"); 3988 } else { 3989 ALOGW_IF(eglErr != EGL_SUCCESS, 3990 "captureScreen: error waiting on EGL fence: %#x", eglErr); 3991 } 3992 eglDestroySyncKHR(mEGLDisplay, sync); 3993 } else { 3994 ALOGW("captureScreen: error creating EGL fence: %#x", eglGetError()); 3995 } 3996 } 3997 if (DEBUG_SCREENSHOTS) { 3998 uint32_t* pixels = new uint32_t[reqWidth*reqHeight]; 3999 getRenderEngine().readPixels(0, 0, reqWidth, reqHeight, pixels); 4000 checkScreenshot(reqWidth, reqHeight, reqWidth, pixels, 4001 hw, minLayerZ, maxLayerZ); 4002 delete [] pixels; 4003 } 4004 4005 } else { 4006 ALOGE("got GL_FRAMEBUFFER_COMPLETE_OES error while taking screenshot"); 4007 result = INVALID_OPERATION; 4008 window->cancelBuffer(window, buffer, syncFd); 4009 buffer = NULL; 4010 } 4011 // destroy our image 4012 eglDestroyImageKHR(mEGLDisplay, image); 4013 } else { 4014 result = BAD_VALUE; 4015 } 4016 if (buffer) { 4017 // queueBuffer takes ownership of syncFd 4018 result = window->queueBuffer(window, buffer, syncFd); 4019 } 4020 } 4021 } else { 4022 result = BAD_VALUE; 4023 } 4024 native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL); 4025 } 4026 4027 return result; 4028 } 4029 4030 void SurfaceFlinger::checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr, 4031 const sp<const DisplayDevice>& hw, int32_t minLayerZ, int32_t maxLayerZ) { 4032 if (DEBUG_SCREENSHOTS) { 4033 for (size_t y=0 ; y<h ; y++) { 4034 uint32_t const * p = (uint32_t const *)vaddr + y*s; 4035 for (size_t x=0 ; x<w ; x++) { 4036 if (p[x] != 0xFF000000) return; 4037 } 4038 } 4039 ALOGE("*** we just took a black screenshot ***\n" 4040 "requested minz=%d, maxz=%d, layerStack=%d", 4041 minLayerZ, maxLayerZ, hw->getLayerStack()); 4042 size_t i = 0; 4043 for (const auto& layer : mDrawingState.layersSortedByZ) { 4044 const Layer::State& state(layer->getDrawingState()); 4045 if (layer->getLayerStack() == hw->getLayerStack() && state.z >= minLayerZ && 4046 state.z <= maxLayerZ) { 4047 layer->traverseInZOrder(LayerVector::StateSet::Drawing, [&](Layer* layer) { 4048 ALOGE("%c index=%zu, name=%s, layerStack=%d, z=%d, visible=%d, flags=%x, alpha=%x", 4049 layer->isVisible() ? '+' : '-', 4050 i, layer->getName().string(), layer->getLayerStack(), state.z, 4051 layer->isVisible(), state.flags, state.alpha); 4052 i++; 4053 }); 4054 } 4055 } 4056 } 4057 } 4058 4059 // --------------------------------------------------------------------------- 4060 4061 void SurfaceFlinger::State::traverseInZOrder(const LayerVector::Visitor& visitor) const { 4062 layersSortedByZ.traverseInZOrder(stateSet, visitor); 4063 } 4064 4065 void SurfaceFlinger::State::traverseInReverseZOrder(const LayerVector::Visitor& visitor) const { 4066 layersSortedByZ.traverseInReverseZOrder(stateSet, visitor); 4067 } 4068 4069 }; // namespace android 4070 4071 4072 #if defined(__gl_h_) 4073 #error "don't include gl/gl.h in this file" 4074 #endif 4075 4076 #if defined(__gl2_h_) 4077 #error "don't include gl2/gl2.h in this file" 4078 #endif 4079