SurfaceFlinger.cpp revision 5f20e2d4462da3471f59152b32cd8640fa4a21da
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 <stdint.h> 20#include <sys/types.h> 21#include <errno.h> 22#include <math.h> 23 24#include <EGL/egl.h> 25#include <GLES/gl.h> 26 27#include <cutils/log.h> 28#include <cutils/properties.h> 29 30#include <binder/IPCThreadState.h> 31#include <binder/IServiceManager.h> 32#include <binder/MemoryHeapBase.h> 33#include <binder/PermissionCache.h> 34 35#include <ui/DisplayInfo.h> 36 37#include <gui/BitTube.h> 38#include <gui/BufferQueue.h> 39#include <gui/IDisplayEventConnection.h> 40#include <gui/SurfaceTextureClient.h> 41 42#include <ui/GraphicBufferAllocator.h> 43#include <ui/PixelFormat.h> 44 45#include <utils/String8.h> 46#include <utils/String16.h> 47#include <utils/StopWatch.h> 48#include <utils/Trace.h> 49 50#include <private/android_filesystem_config.h> 51 52#include "clz.h" 53#include "DdmConnection.h" 54#include "DisplayDevice.h" 55#include "Client.h" 56#include "EventThread.h" 57#include "GLExtensions.h" 58#include "Layer.h" 59#include "LayerDim.h" 60#include "LayerScreenshot.h" 61#include "SurfaceFlinger.h" 62 63#include "DisplayHardware/FramebufferSurface.h" 64#include "DisplayHardware/HWComposer.h" 65 66 67#define EGL_VERSION_HW_ANDROID 0x3143 68 69#define DISPLAY_COUNT 1 70 71namespace android { 72// --------------------------------------------------------------------------- 73 74const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 75const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 76const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 77const String16 sDump("android.permission.DUMP"); 78 79// --------------------------------------------------------------------------- 80 81SurfaceFlinger::SurfaceFlinger() 82 : BnSurfaceComposer(), Thread(false), 83 mTransactionFlags(0), 84 mTransationPending(false), 85 mLayersRemoved(false), 86 mRepaintEverything(0), 87 mBootTime(systemTime()), 88 mVisibleRegionsDirty(false), 89 mHwWorkListDirty(false), 90 mDebugRegion(0), 91 mDebugDDMS(0), 92 mDebugDisableHWC(0), 93 mDebugDisableTransformHint(0), 94 mDebugInSwapBuffers(0), 95 mLastSwapBufferTime(0), 96 mDebugInTransaction(0), 97 mLastTransactionTime(0), 98 mBootFinished(false) 99{ 100 ALOGI("SurfaceFlinger is starting"); 101 102 // debugging stuff... 103 char value[PROPERTY_VALUE_MAX]; 104 105 property_get("debug.sf.showupdates", value, "0"); 106 mDebugRegion = atoi(value); 107 108 property_get("debug.sf.ddms", value, "0"); 109 mDebugDDMS = atoi(value); 110 if (mDebugDDMS) { 111 DdmConnection::start(getServiceName()); 112 } 113 114 ALOGI_IF(mDebugRegion, "showupdates enabled"); 115 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 116} 117 118void SurfaceFlinger::onFirstRef() 119{ 120 mEventQueue.init(this); 121 122 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 123 124 // Wait for the main thread to be done with its initialization 125 mReadyToRunBarrier.wait(); 126} 127 128 129SurfaceFlinger::~SurfaceFlinger() 130{ 131 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 132 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 133 eglTerminate(display); 134} 135 136void SurfaceFlinger::binderDied(const wp<IBinder>& who) 137{ 138 // the window manager died on us. prepare its eulogy. 139 140 // reset screen orientation 141 Vector<ComposerState> state; 142 Vector<DisplayState> displays; 143 DisplayState d; 144 d.what = DisplayState::eOrientationChanged; 145 d.token = mDefaultDisplays[DisplayDevice::DISPLAY_ID_MAIN]; 146 d.orientation = DisplayState::eOrientationDefault; 147 displays.add(d); 148 setTransactionState(state, displays, 0); 149 150 // restart the boot-animation 151 startBootAnim(); 152} 153 154sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 155{ 156 sp<ISurfaceComposerClient> bclient; 157 sp<Client> client(new Client(this)); 158 status_t err = client->initCheck(); 159 if (err == NO_ERROR) { 160 bclient = client; 161 } 162 return bclient; 163} 164 165sp<IBinder> SurfaceFlinger::createDisplay() 166{ 167 class DisplayToken : public BBinder { 168 sp<SurfaceFlinger> flinger; 169 virtual ~DisplayToken() { 170 // no more references, this display must be terminated 171 Mutex::Autolock _l(flinger->mStateLock); 172 flinger->mCurrentState.displays.removeItem(this); 173 flinger->setTransactionFlags(eDisplayTransactionNeeded); 174 } 175 public: 176 DisplayToken(const sp<SurfaceFlinger>& flinger) 177 : flinger(flinger) { 178 } 179 }; 180 181 sp<BBinder> token = new DisplayToken(this); 182 183 Mutex::Autolock _l(mStateLock); 184 DisplayDeviceState info(intptr_t(token.get())); // FIXME: we shouldn't use the address for the id 185 mCurrentState.displays.add(token, info); 186 187 return token; 188} 189 190sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 191 if (uint32_t(id) >= DisplayDevice::DISPLAY_ID_COUNT) { 192 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 193 return NULL; 194 } 195 return mDefaultDisplays[id]; 196} 197 198sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 199{ 200 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 201 return gba; 202} 203 204void SurfaceFlinger::bootFinished() 205{ 206 const nsecs_t now = systemTime(); 207 const nsecs_t duration = now - mBootTime; 208 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 209 mBootFinished = true; 210 211 // wait patiently for the window manager death 212 const String16 name("window"); 213 sp<IBinder> window(defaultServiceManager()->getService(name)); 214 if (window != 0) { 215 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 216 } 217 218 // stop boot animation 219 // formerly we would just kill the process, but we now ask it to exit so it 220 // can choose where to stop the animation. 221 property_set("service.bootanim.exit", "1"); 222} 223 224void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 225 class MessageDestroyGLTexture : public MessageBase { 226 GLuint texture; 227 public: 228 MessageDestroyGLTexture(GLuint texture) 229 : texture(texture) { 230 } 231 virtual bool handler() { 232 glDeleteTextures(1, &texture); 233 return true; 234 } 235 }; 236 postMessageAsync(new MessageDestroyGLTexture(texture)); 237} 238 239status_t SurfaceFlinger::selectConfigForPixelFormat( 240 EGLDisplay dpy, 241 EGLint const* attrs, 242 PixelFormat format, 243 EGLConfig* outConfig) 244{ 245 EGLConfig config = NULL; 246 EGLint numConfigs = -1, n=0; 247 eglGetConfigs(dpy, NULL, 0, &numConfigs); 248 EGLConfig* const configs = new EGLConfig[numConfigs]; 249 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 250 for (int i=0 ; i<n ; i++) { 251 EGLint nativeVisualId = 0; 252 eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId); 253 if (nativeVisualId>0 && format == nativeVisualId) { 254 *outConfig = configs[i]; 255 delete [] configs; 256 return NO_ERROR; 257 } 258 } 259 delete [] configs; 260 return NAME_NOT_FOUND; 261} 262 263EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 264 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 265 // it is to be used with WIFI displays 266 EGLConfig config; 267 EGLint dummy; 268 status_t err; 269 EGLint attribs[] = { 270 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 271 EGL_RECORDABLE_ANDROID, EGL_TRUE, 272 EGL_NONE 273 }; 274 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 275 if (err) { 276 // maybe we failed because of EGL_RECORDABLE_ANDROID 277 ALOGW("couldn't find an EGLConfig with EGL_RECORDABLE_ANDROID"); 278 attribs[2] = EGL_NONE; 279 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 280 } 281 ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format"); 282 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) { 283 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 284 } 285 return config; 286} 287 288EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 289 // Also create our EGLContext 290 EGLint contextAttributes[] = { 291#ifdef EGL_IMG_context_priority 292#ifdef HAS_CONTEXT_PRIORITY 293#warning "using EGL_IMG_context_priority" 294 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 295#endif 296#endif 297 EGL_NONE, EGL_NONE 298 }; 299 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 300 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 301 return ctxt; 302} 303 304void SurfaceFlinger::initializeGL(EGLDisplay display, EGLSurface surface) { 305 EGLBoolean result = eglMakeCurrent(display, surface, surface, mEGLContext); 306 if (!result) { 307 ALOGE("Couldn't create a working GLES context. check logs. exiting..."); 308 exit(0); 309 } 310 311 GLExtensions& extensions(GLExtensions::getInstance()); 312 extensions.initWithGLStrings( 313 glGetString(GL_VENDOR), 314 glGetString(GL_RENDERER), 315 glGetString(GL_VERSION), 316 glGetString(GL_EXTENSIONS), 317 eglQueryString(display, EGL_VENDOR), 318 eglQueryString(display, EGL_VERSION), 319 eglQueryString(display, EGL_EXTENSIONS)); 320 321 EGLint w, h; 322 eglQuerySurface(display, surface, EGL_WIDTH, &w); 323 eglQuerySurface(display, surface, EGL_HEIGHT, &h); 324 325 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 326 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 327 328 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 329 glPixelStorei(GL_PACK_ALIGNMENT, 4); 330 glEnableClientState(GL_VERTEX_ARRAY); 331 glShadeModel(GL_FLAT); 332 glDisable(GL_DITHER); 333 glDisable(GL_CULL_FACE); 334 335 struct pack565 { 336 inline uint16_t operator() (int r, int g, int b) const { 337 return (r<<11)|(g<<5)|b; 338 } 339 } pack565; 340 341 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 342 glGenTextures(1, &mProtectedTexName); 343 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 344 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 345 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 346 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 347 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 348 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 349 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 350 351 glViewport(0, 0, w, h); 352 glMatrixMode(GL_PROJECTION); 353 glLoadIdentity(); 354 // put the origin in the left-bottom corner 355 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 356 357 // print some debugging info 358 EGLint r,g,b,a; 359 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 360 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 361 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 362 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 363 ALOGI("EGL informations:"); 364 ALOGI("vendor : %s", extensions.getEglVendor()); 365 ALOGI("version : %s", extensions.getEglVersion()); 366 ALOGI("extensions: %s", extensions.getEglExtension()); 367 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 368 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 369 ALOGI("OpenGL ES informations:"); 370 ALOGI("vendor : %s", extensions.getVendor()); 371 ALOGI("renderer : %s", extensions.getRenderer()); 372 ALOGI("version : %s", extensions.getVersion()); 373 ALOGI("extensions: %s", extensions.getExtension()); 374 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 375 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 376} 377 378status_t SurfaceFlinger::readyToRun() 379{ 380 ALOGI( "SurfaceFlinger's main thread ready to run. " 381 "Initializing graphics H/W..."); 382 383 // initialize EGL 384 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 385 eglInitialize(mEGLDisplay, NULL, NULL); 386 387 // Initialize the main display 388 // create native window to main display 389 sp<FramebufferSurface> fbs = FramebufferSurface::create(); 390 if (fbs == NULL) { 391 ALOGE("Display subsystem failed to initialize. check logs. exiting..."); 392 exit(0); 393 } 394 395 sp<SurfaceTextureClient> stc(new SurfaceTextureClient( 396 static_cast<sp<ISurfaceTexture> >(fbs->getBufferQueue()))); 397 398 // initialize the config and context 399 int format; 400 ANativeWindow* const anw = stc.get(); 401 anw->query(anw, NATIVE_WINDOW_FORMAT, &format); 402 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 403 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 404 405 // initialize our main display hardware 406 407 for (size_t i=0 ; i<DisplayDevice::DISPLAY_ID_COUNT ; i++) { 408 mDefaultDisplays[i] = new BBinder(); 409 mCurrentState.displays.add(mDefaultDisplays[i], DisplayDeviceState(i)); 410 } 411 sp<DisplayDevice> hw = new DisplayDevice(this, 412 DisplayDevice::DISPLAY_ID_MAIN, anw, fbs, mEGLConfig); 413 mDisplays.add(hw->getDisplayId(), hw); 414 415 // initialize OpenGL ES 416 EGLSurface surface = hw->getEGLSurface(); 417 initializeGL(mEGLDisplay, surface); 418 419 // start the EventThread 420 mEventThread = new EventThread(this); 421 mEventQueue.setEventThread(mEventThread); 422 423 // initialize the H/W composer 424 mHwc = new HWComposer(this, 425 *static_cast<HWComposer::EventHandler *>(this), 426 fbs->getFbHal()); 427 428 // initialize our drawing state 429 mDrawingState = mCurrentState; 430 431 // We're now ready to accept clients... 432 mReadyToRunBarrier.open(); 433 434 // start boot animation 435 startBootAnim(); 436 437 return NO_ERROR; 438} 439 440void SurfaceFlinger::startBootAnim() { 441 // start boot animation 442 property_set("service.bootanim.exit", "0"); 443 property_set("ctl.start", "bootanim"); 444} 445 446uint32_t SurfaceFlinger::getMaxTextureSize() const { 447 return mMaxTextureSize; 448} 449 450uint32_t SurfaceFlinger::getMaxViewportDims() const { 451 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 452 mMaxViewportDims[0] : mMaxViewportDims[1]; 453} 454 455// ---------------------------------------------------------------------------- 456 457bool SurfaceFlinger::authenticateSurfaceTexture( 458 const sp<ISurfaceTexture>& surfaceTexture) const { 459 Mutex::Autolock _l(mStateLock); 460 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 461 462 // Check the visible layer list for the ISurface 463 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 464 size_t count = currentLayers.size(); 465 for (size_t i=0 ; i<count ; i++) { 466 const sp<LayerBase>& layer(currentLayers[i]); 467 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 468 if (lbc != NULL) { 469 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 470 if (lbcBinder == surfaceTextureBinder) { 471 return true; 472 } 473 } 474 } 475 476 // Check the layers in the purgatory. This check is here so that if a 477 // SurfaceTexture gets destroyed before all the clients are done using it, 478 // the error will not be reported as "surface XYZ is not authenticated", but 479 // will instead fail later on when the client tries to use the surface, 480 // which should be reported as "surface XYZ returned an -ENODEV". The 481 // purgatorized layers are no less authentic than the visible ones, so this 482 // should not cause any harm. 483 size_t purgatorySize = mLayerPurgatory.size(); 484 for (size_t i=0 ; i<purgatorySize ; i++) { 485 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 486 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 487 if (lbc != NULL) { 488 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 489 if (lbcBinder == surfaceTextureBinder) { 490 return true; 491 } 492 } 493 } 494 495 return false; 496} 497 498status_t SurfaceFlinger::getDisplayInfo(DisplayID dpy, DisplayInfo* info) { 499 // TODO: this is here only for compatibility -- should go away eventually. 500 if (uint32_t(dpy) >= 1) { 501 return BAD_INDEX; 502 } 503 504 const HWComposer& hwc(getHwComposer()); 505 float xdpi = hwc.getDpiX(); 506 float ydpi = hwc.getDpiY(); 507 508 // TODO: Not sure if display density should handled by SF any longer 509 class Density { 510 static int getDensityFromProperty(char const* propName) { 511 char property[PROPERTY_VALUE_MAX]; 512 int density = 0; 513 if (property_get(propName, property, NULL) > 0) { 514 density = atoi(property); 515 } 516 return density; 517 } 518 public: 519 static int getEmuDensity() { 520 return getDensityFromProperty("qemu.sf.lcd_density"); } 521 static int getBuildDensity() { 522 return getDensityFromProperty("ro.sf.lcd_density"); } 523 }; 524 // The density of the device is provided by a build property 525 float density = Density::getBuildDensity() / 160.0f; 526 if (density == 0) { 527 // the build doesn't provide a density -- this is wrong! 528 // use xdpi instead 529 ALOGE("ro.sf.lcd_density must be defined as a build property"); 530 density = xdpi / 160.0f; 531 } 532 if (Density::getEmuDensity()) { 533 // if "qemu.sf.lcd_density" is specified, it overrides everything 534 xdpi = ydpi = density = Density::getEmuDensity(); 535 density /= 160.0f; 536 } 537 538 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 539 info->w = hw->getWidth(); 540 info->h = hw->getHeight(); 541 info->xdpi = xdpi; 542 info->ydpi = ydpi; 543 info->fps = float(1e9 / hwc.getRefreshPeriod()); 544 info->density = density; 545 info->orientation = hw->getOrientation(); 546 // TODO: this needs to go away (currently needed only by webkit) 547 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 548 return NO_ERROR; 549} 550 551// ---------------------------------------------------------------------------- 552 553sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 554 return mEventThread->createEventConnection(); 555} 556 557void SurfaceFlinger::connectDisplay(const sp<ISurfaceTexture> surface) { 558 559 sp<IBinder> token; 560 { // scope for the lock 561 Mutex::Autolock _l(mStateLock); 562 token = mExtDisplayToken; 563 } 564 565 if (token == 0) { 566 token = createDisplay(); 567 } 568 569 { // scope for the lock 570 Mutex::Autolock _l(mStateLock); 571 if (surface == 0) { 572 // release our current display. we're guarantee to have 573 // a reference to it (token), while we hold the lock 574 mExtDisplayToken = 0; 575 } else { 576 mExtDisplayToken = token; 577 } 578 579 DisplayDeviceState& info(mCurrentState.displays.editValueFor(token)); 580 info.surface = surface; 581 setTransactionFlags(eDisplayTransactionNeeded); 582 } 583} 584 585// ---------------------------------------------------------------------------- 586 587void SurfaceFlinger::waitForEvent() { 588 mEventQueue.waitMessage(); 589} 590 591void SurfaceFlinger::signalTransaction() { 592 mEventQueue.invalidate(); 593} 594 595void SurfaceFlinger::signalLayerUpdate() { 596 mEventQueue.invalidate(); 597} 598 599void SurfaceFlinger::signalRefresh() { 600 mEventQueue.refresh(); 601} 602 603status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 604 nsecs_t reltime, uint32_t flags) { 605 return mEventQueue.postMessage(msg, reltime); 606} 607 608status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 609 nsecs_t reltime, uint32_t flags) { 610 status_t res = mEventQueue.postMessage(msg, reltime); 611 if (res == NO_ERROR) { 612 msg->wait(); 613 } 614 return res; 615} 616 617bool SurfaceFlinger::threadLoop() { 618 waitForEvent(); 619 return true; 620} 621 622void SurfaceFlinger::onVSyncReceived(int dpy, nsecs_t timestamp) { 623 mEventThread->onVSyncReceived(dpy, timestamp); 624} 625 626void SurfaceFlinger::eventControl(int event, int enabled) { 627 getHwComposer().eventControl(event, enabled); 628} 629 630void SurfaceFlinger::onMessageReceived(int32_t what) { 631 ATRACE_CALL(); 632 switch (what) { 633 case MessageQueue::INVALIDATE: 634 handleMessageTransaction(); 635 handleMessageInvalidate(); 636 signalRefresh(); 637 break; 638 case MessageQueue::REFRESH: 639 handleMessageRefresh(); 640 break; 641 } 642} 643 644void SurfaceFlinger::handleMessageTransaction() { 645 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 646 if (transactionFlags) { 647 handleTransaction(transactionFlags); 648 } 649} 650 651void SurfaceFlinger::handleMessageInvalidate() { 652 handlePageFlip(); 653} 654 655void SurfaceFlinger::handleMessageRefresh() { 656 handleRefresh(); 657 658 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 659 mVisibleRegionsDirty = false; 660 invalidateHwcGeometry(); 661 662 /* 663 * rebuild the visible layer list per screen 664 */ 665 666 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 667 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 668 const sp<DisplayDevice>& hw(mDisplays[dpy]); 669 Region opaqueRegion; 670 Region dirtyRegion; 671 computeVisibleRegions(currentLayers, 672 hw->getLayerStack(), dirtyRegion, opaqueRegion); 673 hw->dirtyRegion.orSelf(dirtyRegion); 674 675 Vector< sp<LayerBase> > layersSortedByZ; 676 const size_t count = currentLayers.size(); 677 for (size_t i=0 ; i<count ; i++) { 678 const Layer::State& s(currentLayers[i]->drawingState()); 679 if (s.layerStack == hw->getLayerStack()) { 680 if (!currentLayers[i]->visibleRegion.isEmpty()) { 681 layersSortedByZ.add(currentLayers[i]); 682 } 683 } 684 } 685 hw->setVisibleLayersSortedByZ(layersSortedByZ); 686 hw->undefinedRegion.set(hw->getBounds()); 687 hw->undefinedRegion.subtractSelf(hw->getTransform().transform(opaqueRegion)); 688 } 689 } 690 691 HWComposer& hwc(getHwComposer()); 692 if (hwc.initCheck() == NO_ERROR) { 693 // build the h/w work list 694 const bool workListsDirty = mHwWorkListDirty; 695 mHwWorkListDirty = false; 696 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 697 sp<const DisplayDevice> hw(mDisplays[dpy]); 698 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 699 const size_t count = currentLayers.size(); 700 701 const int32_t id = hw->getDisplayId(); 702 if (hwc.createWorkList(id, count) >= 0) { 703 HWComposer::LayerListIterator cur = hwc.begin(id); 704 const HWComposer::LayerListIterator end = hwc.end(id); 705 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 706 const sp<LayerBase>& layer(currentLayers[i]); 707 708 if (CC_UNLIKELY(workListsDirty)) { 709 layer->setGeometry(hw, *cur); 710 if (mDebugDisableHWC || mDebugRegion) { 711 cur->setSkip(true); 712 } 713 } 714 715 /* 716 * update the per-frame h/w composer data for each layer 717 * and build the transparent region of the FB 718 */ 719 layer->setPerFrameData(hw, *cur); 720 } 721 } 722 } 723 status_t err = hwc.prepare(); 724 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 725 } 726 727 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 728 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 729 const sp<DisplayDevice>& hw(mDisplays[dpy]); 730 731 // transform the dirty region into this screen's coordinate space 732 const Transform& planeTransform(hw->getTransform()); 733 Region dirtyRegion; 734 if (repaintEverything) { 735 dirtyRegion.set(hw->bounds()); 736 } else { 737 dirtyRegion = planeTransform.transform(hw->dirtyRegion); 738 dirtyRegion.andSelf(hw->bounds()); 739 } 740 hw->dirtyRegion.clear(); 741 742 if (!dirtyRegion.isEmpty()) { 743 if (hw->canDraw()) { 744 // repaint the framebuffer (if needed) 745 handleRepaint(hw, dirtyRegion); 746 } 747 } 748 // inform the h/w that we're done compositing 749 hw->compositionComplete(); 750 } 751 752 postFramebuffer(); 753} 754 755void SurfaceFlinger::postFramebuffer() 756{ 757 ATRACE_CALL(); 758 759 const nsecs_t now = systemTime(); 760 mDebugInSwapBuffers = now; 761 762 HWComposer& hwc(getHwComposer()); 763 764 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 765 const sp<DisplayDevice>& hw(mDisplays[dpy]); 766 if (hwc.initCheck() == NO_ERROR) { 767 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 768 const size_t count = currentLayers.size(); 769 const int32_t id = hw->getDisplayId(); 770 HWComposer::LayerListIterator cur = hwc.begin(id); 771 const HWComposer::LayerListIterator end = hwc.end(id); 772 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 773 const sp<LayerBase>& layer(currentLayers[i]); 774 layer->setAcquireFence(hw, *cur); 775 } 776 } 777 hw->flip(hw->swapRegion); 778 hw->swapRegion.clear(); 779 } 780 781 if (hwc.initCheck() == NO_ERROR) { 782 // FIXME: eventually commit() won't take arguments 783 // FIXME: EGL spec says: 784 // "surface must be bound to the calling thread's current context, 785 // for the current rendering API." 786 DisplayDevice::makeCurrent(getDisplayDevice(DisplayDevice::DISPLAY_ID_MAIN), mEGLContext); 787 hwc.commit(mEGLDisplay, getDefaultDisplayDevice()->getEGLSurface()); 788 } 789 790 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 791 sp<const DisplayDevice> hw(mDisplays[dpy]); 792 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 793 const size_t count = currentLayers.size(); 794 if (hwc.initCheck() == NO_ERROR) { 795 int32_t id = hw->getDisplayId(); 796 HWComposer::LayerListIterator cur = hwc.begin(id); 797 const HWComposer::LayerListIterator end = hwc.end(id); 798 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 799 currentLayers[i]->onLayerDisplayed(hw, &*cur); 800 } 801 } 802 803 // FIXME: we need to call eglSwapBuffers() on displays that have 804 // GL composition and only on those. 805 // however, currently hwc.commit() already does that for the main 806 // display and never for the other ones 807 if (hw->getDisplayId() >= DisplayDevice::DISPLAY_ID_COUNT) { 808 // FIXME: EGL spec says: 809 // "surface must be bound to the calling thread's current context, 810 // for the current rendering API." 811 DisplayDevice::makeCurrent(hw, mEGLContext); 812 eglSwapBuffers(mEGLDisplay, hw->getEGLSurface()); 813 for (size_t i = 0; i < count; i++) { 814 currentLayers[i]->onLayerDisplayed(hw, NULL); 815 } 816 } 817 } 818 819 mLastSwapBufferTime = systemTime() - now; 820 mDebugInSwapBuffers = 0; 821} 822 823void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 824{ 825 ATRACE_CALL(); 826 827 Mutex::Autolock _l(mStateLock); 828 const nsecs_t now = systemTime(); 829 mDebugInTransaction = now; 830 831 // Here we're guaranteed that some transaction flags are set 832 // so we can call handleTransactionLocked() unconditionally. 833 // We call getTransactionFlags(), which will also clear the flags, 834 // with mStateLock held to guarantee that mCurrentState won't change 835 // until the transaction is committed. 836 837 transactionFlags = getTransactionFlags(eTransactionMask); 838 handleTransactionLocked(transactionFlags); 839 840 mLastTransactionTime = systemTime() - now; 841 mDebugInTransaction = 0; 842 invalidateHwcGeometry(); 843 // here the transaction has been committed 844} 845 846void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 847{ 848 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 849 const size_t count = currentLayers.size(); 850 851 /* 852 * Traversal of the children 853 * (perform the transaction for each of them if needed) 854 */ 855 856 if (transactionFlags & eTraversalNeeded) { 857 for (size_t i=0 ; i<count ; i++) { 858 const sp<LayerBase>& layer = currentLayers[i]; 859 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 860 if (!trFlags) continue; 861 862 const uint32_t flags = layer->doTransaction(0); 863 if (flags & Layer::eVisibleRegion) 864 mVisibleRegionsDirty = true; 865 } 866 } 867 868 /* 869 * Perform display own transactions if needed 870 */ 871 872 if (transactionFlags & eDisplayTransactionNeeded) { 873 // here we take advantage of Vector's copy-on-write semantics to 874 // improve performance by skipping the transaction entirely when 875 // know that the lists are identical 876 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 877 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 878 if (!curr.isIdenticalTo(draw)) { 879 mVisibleRegionsDirty = true; 880 const size_t cc = curr.size(); 881 const size_t dc = draw.size(); 882 883 // find the displays that were removed 884 // (ie: in drawing state but not in current state) 885 // also handle displays that changed 886 // (ie: displays that are in both lists) 887 for (size_t i=0 ; i<dc ; i++) { 888 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 889 if (j < 0) { 890 // in drawing state but not in current state 891 if (draw[i].id != DisplayDevice::DISPLAY_ID_MAIN) { 892 mDisplays.removeItem(draw[i].id); 893 } else { 894 ALOGW("trying to remove the main display"); 895 } 896 } else { 897 // this display is in both lists. see if something changed. 898 const DisplayDeviceState& state(curr[j]); 899 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 900 // changing the surface is like destroying and 901 // recreating the DisplayDevice 902 903 sp<SurfaceTextureClient> stc( 904 new SurfaceTextureClient(state.surface)); 905 906 sp<DisplayDevice> disp = new DisplayDevice(this, 907 state.id, stc, 0, mEGLConfig); 908 909 disp->setLayerStack(state.layerStack); 910 disp->setOrientation(state.orientation); 911 // TODO: take viewport and frame into account 912 mDisplays.replaceValueFor(state.id, disp); 913 } 914 if (state.layerStack != draw[i].layerStack) { 915 const sp<DisplayDevice>& disp(getDisplayDevice(state.id)); 916 disp->setLayerStack(state.layerStack); 917 } 918 if (state.orientation != draw[i].orientation || 919 state.viewport != draw[i].viewport || 920 state.frame != draw[i].frame) { 921 const sp<DisplayDevice>& disp(getDisplayDevice(state.id)); 922 disp->setOrientation(state.orientation); 923 // TODO: take viewport and frame into account 924 } 925 } 926 } 927 928 // find displays that were added 929 // (ie: in current state but not in drawing state) 930 for (size_t i=0 ; i<cc ; i++) { 931 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 932 const DisplayDeviceState& state(curr[i]); 933 sp<SurfaceTextureClient> stc( 934 new SurfaceTextureClient(state.surface)); 935 sp<DisplayDevice> disp = new DisplayDevice(this, state.id, 936 stc, 0, mEGLConfig); 937 mDisplays.add(state.id, disp); 938 } 939 } 940 } 941 } 942 943 /* 944 * Perform our own transaction if needed 945 */ 946 947 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 948 // layers have been added 949 mVisibleRegionsDirty = true; 950 } 951 952 // some layers might have been removed, so 953 // we need to update the regions they're exposing. 954 if (mLayersRemoved) { 955 mLayersRemoved = false; 956 mVisibleRegionsDirty = true; 957 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 958 const size_t count = previousLayers.size(); 959 for (size_t i=0 ; i<count ; i++) { 960 const sp<LayerBase>& layer(previousLayers[i]); 961 if (currentLayers.indexOf(layer) < 0) { 962 // this layer is not visible anymore 963 // TODO: we could traverse the tree from front to back and 964 // compute the actual visible region 965 // TODO: we could cache the transformed region 966 Layer::State front(layer->drawingState()); 967 Region visibleReg = front.transform.transform( 968 Region(Rect(front.active.w, front.active.h))); 969 invalidateLayerStack(front.layerStack, visibleReg); 970 } 971 } 972 } 973 974 commitTransaction(); 975} 976 977void SurfaceFlinger::commitTransaction() 978{ 979 if (!mLayersPendingRemoval.isEmpty()) { 980 // Notify removed layers now that they can't be drawn from 981 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 982 mLayersPendingRemoval[i]->onRemoved(); 983 } 984 mLayersPendingRemoval.clear(); 985 } 986 987 mDrawingState = mCurrentState; 988 mTransationPending = false; 989 mTransactionCV.broadcast(); 990} 991 992void SurfaceFlinger::computeVisibleRegions( 993 const LayerVector& currentLayers, uint32_t layerStack, 994 Region& outDirtyRegion, Region& outOpaqueRegion) 995{ 996 ATRACE_CALL(); 997 998 Region aboveOpaqueLayers; 999 Region aboveCoveredLayers; 1000 Region dirty; 1001 1002 outDirtyRegion.clear(); 1003 1004 size_t i = currentLayers.size(); 1005 while (i--) { 1006 const sp<LayerBase>& layer = currentLayers[i]; 1007 1008 // start with the whole surface at its current location 1009 const Layer::State& s(layer->drawingState()); 1010 1011 // only consider the layers on the given later stack 1012 if (s.layerStack != layerStack) 1013 continue; 1014 1015 /* 1016 * opaqueRegion: area of a surface that is fully opaque. 1017 */ 1018 Region opaqueRegion; 1019 1020 /* 1021 * visibleRegion: area of a surface that is visible on screen 1022 * and not fully transparent. This is essentially the layer's 1023 * footprint minus the opaque regions above it. 1024 * Areas covered by a translucent surface are considered visible. 1025 */ 1026 Region visibleRegion; 1027 1028 /* 1029 * coveredRegion: area of a surface that is covered by all 1030 * visible regions above it (which includes the translucent areas). 1031 */ 1032 Region coveredRegion; 1033 1034 1035 // handle hidden surfaces by setting the visible region to empty 1036 if (CC_LIKELY(!(s.flags & layer_state_t::eLayerHidden) && s.alpha)) { 1037 const bool translucent = !layer->isOpaque(); 1038 Rect bounds(layer->computeBounds()); 1039 visibleRegion.set(bounds); 1040 if (!visibleRegion.isEmpty()) { 1041 // Remove the transparent area from the visible region 1042 if (translucent) { 1043 Region transparentRegionScreen; 1044 const Transform tr(s.transform); 1045 if (tr.transformed()) { 1046 if (tr.preserveRects()) { 1047 // transform the transparent region 1048 transparentRegionScreen = tr.transform(s.transparentRegion); 1049 } else { 1050 // transformation too complex, can't do the 1051 // transparent region optimization. 1052 transparentRegionScreen.clear(); 1053 } 1054 } else { 1055 transparentRegionScreen = s.transparentRegion; 1056 } 1057 visibleRegion.subtractSelf(transparentRegionScreen); 1058 } 1059 1060 // compute the opaque region 1061 const int32_t layerOrientation = s.transform.getOrientation(); 1062 if (s.alpha==255 && !translucent && 1063 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1064 // the opaque region is the layer's footprint 1065 opaqueRegion = visibleRegion; 1066 } 1067 } 1068 } 1069 1070 // Clip the covered region to the visible region 1071 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1072 1073 // Update aboveCoveredLayers for next (lower) layer 1074 aboveCoveredLayers.orSelf(visibleRegion); 1075 1076 // subtract the opaque region covered by the layers above us 1077 visibleRegion.subtractSelf(aboveOpaqueLayers); 1078 1079 // compute this layer's dirty region 1080 if (layer->contentDirty) { 1081 // we need to invalidate the whole region 1082 dirty = visibleRegion; 1083 // as well, as the old visible region 1084 dirty.orSelf(layer->visibleRegion); 1085 layer->contentDirty = false; 1086 } else { 1087 /* compute the exposed region: 1088 * the exposed region consists of two components: 1089 * 1) what's VISIBLE now and was COVERED before 1090 * 2) what's EXPOSED now less what was EXPOSED before 1091 * 1092 * note that (1) is conservative, we start with the whole 1093 * visible region but only keep what used to be covered by 1094 * something -- which mean it may have been exposed. 1095 * 1096 * (2) handles areas that were not covered by anything but got 1097 * exposed because of a resize. 1098 */ 1099 const Region newExposed = visibleRegion - coveredRegion; 1100 const Region oldVisibleRegion = layer->visibleRegion; 1101 const Region oldCoveredRegion = layer->coveredRegion; 1102 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1103 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1104 } 1105 dirty.subtractSelf(aboveOpaqueLayers); 1106 1107 // accumulate to the screen dirty region 1108 outDirtyRegion.orSelf(dirty); 1109 1110 // Update aboveOpaqueLayers for next (lower) layer 1111 aboveOpaqueLayers.orSelf(opaqueRegion); 1112 1113 // Store the visible region is screen space 1114 layer->setVisibleRegion(visibleRegion); 1115 layer->setCoveredRegion(coveredRegion); 1116 } 1117 1118 outOpaqueRegion = aboveOpaqueLayers; 1119} 1120 1121void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1122 const Region& dirty) { 1123 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1124 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1125 if (hw->getLayerStack() == layerStack) { 1126 hw->dirtyRegion.orSelf(dirty); 1127 } 1128 } 1129} 1130 1131void SurfaceFlinger::handlePageFlip() 1132{ 1133 ATRACE_CALL(); 1134 Region dirtyRegion; 1135 1136 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1137 1138 bool visibleRegions = false; 1139 const size_t count = currentLayers.size(); 1140 sp<LayerBase> const* layers = currentLayers.array(); 1141 for (size_t i=0 ; i<count ; i++) { 1142 const sp<LayerBase>& layer(layers[i]); 1143 const Region dirty(layer->latchBuffer(visibleRegions)); 1144 Layer::State s(layer->drawingState()); 1145 invalidateLayerStack(s.layerStack, dirty); 1146 } 1147 1148 mVisibleRegionsDirty |= visibleRegions; 1149} 1150 1151void SurfaceFlinger::invalidateHwcGeometry() 1152{ 1153 mHwWorkListDirty = true; 1154} 1155 1156void SurfaceFlinger::handleRefresh() 1157{ 1158 bool needInvalidate = false; 1159 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1160 const size_t count = currentLayers.size(); 1161 for (size_t i=0 ; i<count ; i++) { 1162 const sp<LayerBase>& layer(currentLayers[i]); 1163 if (layer->onPreComposition()) { 1164 needInvalidate = true; 1165 } 1166 } 1167 if (needInvalidate) { 1168 signalLayerUpdate(); 1169 } 1170} 1171 1172void SurfaceFlinger::handleRepaint(const sp<const DisplayDevice>& hw, 1173 const Region& inDirtyRegion) 1174{ 1175 ATRACE_CALL(); 1176 1177 Region dirtyRegion(inDirtyRegion); 1178 1179 // compute the invalid region 1180 hw->swapRegion.orSelf(dirtyRegion); 1181 1182 if (CC_UNLIKELY(mDebugRegion)) { 1183 debugFlashRegions(hw, dirtyRegion); 1184 } 1185 1186 uint32_t flags = hw->getFlags(); 1187 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1188 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1189 // takes a rectangle, we must make sure to update that whole 1190 // rectangle in that case 1191 dirtyRegion.set(hw->swapRegion.bounds()); 1192 } else { 1193 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1194 // We need to redraw the rectangle that will be updated 1195 // (pushed to the framebuffer). 1196 // This is needed because PARTIAL_UPDATES only takes one 1197 // rectangle instead of a region (see DisplayDevice::flip()) 1198 dirtyRegion.set(hw->swapRegion.bounds()); 1199 } else { 1200 // we need to redraw everything (the whole screen) 1201 dirtyRegion.set(hw->bounds()); 1202 hw->swapRegion = dirtyRegion; 1203 } 1204 } 1205 1206 composeSurfaces(hw, dirtyRegion); 1207 1208 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1209 const size_t count = currentLayers.size(); 1210 for (size_t i=0 ; i<count ; i++) { 1211 currentLayers[i]->onPostComposition(); 1212 } 1213 1214 // update the swap region and clear the dirty region 1215 hw->swapRegion.orSelf(dirtyRegion); 1216} 1217 1218void SurfaceFlinger::composeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1219{ 1220 HWComposer& hwc(getHwComposer()); 1221 int32_t id = hw->getDisplayId(); 1222 HWComposer::LayerListIterator cur = hwc.begin(id); 1223 const HWComposer::LayerListIterator end = hwc.end(id); 1224 1225 const size_t fbLayerCount = hwc.getLayerCount(id, HWC_FRAMEBUFFER); 1226 if (cur==end || fbLayerCount) { 1227 1228 DisplayDevice::makeCurrent(hw, mEGLContext); 1229 1230 // set the frame buffer 1231 glMatrixMode(GL_MODELVIEW); 1232 glLoadIdentity(); 1233 1234 // Never touch the framebuffer if we don't have any framebuffer layers 1235 if (hwc.getLayerCount(id, HWC_OVERLAY)) { 1236 // when using overlays, we assume a fully transparent framebuffer 1237 // NOTE: we could reduce how much we need to clear, for instance 1238 // remove where there are opaque FB layers. however, on some 1239 // GPUs doing a "clean slate" glClear might be more efficient. 1240 // We'll revisit later if needed. 1241 glClearColor(0, 0, 0, 0); 1242 glClear(GL_COLOR_BUFFER_BIT); 1243 } else { 1244 const Region region(hw->undefinedRegion.intersect(dirty)); 1245 // screen is already cleared here 1246 if (!region.isEmpty()) { 1247 // can happen with SurfaceView 1248 drawWormhole(region); 1249 } 1250 } 1251 1252 /* 1253 * and then, render the layers targeted at the framebuffer 1254 */ 1255 1256 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1257 const size_t count = layers.size(); 1258 const Transform& tr = hw->getTransform(); 1259 for (size_t i=0 ; i<count ; ++i) { 1260 const sp<LayerBase>& layer(layers[i]); 1261 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1262 if (!clip.isEmpty()) { 1263 if (cur != end && cur->getCompositionType() == HWC_OVERLAY) { 1264 if (i && (cur->getHints() & HWC_HINT_CLEAR_FB) 1265 && layer->isOpaque()) { 1266 // never clear the very first layer since we're 1267 // guaranteed the FB is already cleared 1268 layer->clearWithOpenGL(hw, clip); 1269 } 1270 ++cur; 1271 continue; 1272 } 1273 // render the layer 1274 layer->draw(hw, clip); 1275 } 1276 if (cur != end) { 1277 ++cur; 1278 } 1279 } 1280 } 1281} 1282 1283void SurfaceFlinger::debugFlashRegions(const sp<const DisplayDevice>& hw, 1284 const Region& dirtyRegion) 1285{ 1286 const uint32_t flags = hw->getFlags(); 1287 const int32_t height = hw->getHeight(); 1288 if (hw->swapRegion.isEmpty()) { 1289 return; 1290 } 1291 1292 if (!(flags & DisplayDevice::SWAP_RECTANGLE)) { 1293 const Region repaint((flags & DisplayDevice::PARTIAL_UPDATES) ? 1294 dirtyRegion.bounds() : hw->bounds()); 1295 composeSurfaces(hw, repaint); 1296 } 1297 1298 glDisable(GL_TEXTURE_EXTERNAL_OES); 1299 glDisable(GL_TEXTURE_2D); 1300 glDisable(GL_BLEND); 1301 1302 static int toggle = 0; 1303 toggle = 1 - toggle; 1304 if (toggle) { 1305 glColor4f(1, 0, 1, 1); 1306 } else { 1307 glColor4f(1, 1, 0, 1); 1308 } 1309 1310 Region::const_iterator it = dirtyRegion.begin(); 1311 Region::const_iterator const end = dirtyRegion.end(); 1312 while (it != end) { 1313 const Rect& r = *it++; 1314 GLfloat vertices[][2] = { 1315 { r.left, height - r.top }, 1316 { r.left, height - r.bottom }, 1317 { r.right, height - r.bottom }, 1318 { r.right, height - r.top } 1319 }; 1320 glVertexPointer(2, GL_FLOAT, 0, vertices); 1321 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1322 } 1323 1324 hw->flip(hw->swapRegion); 1325 1326 if (mDebugRegion > 1) 1327 usleep(mDebugRegion * 1000); 1328} 1329 1330void SurfaceFlinger::drawWormhole(const Region& region) const 1331{ 1332 glDisable(GL_TEXTURE_EXTERNAL_OES); 1333 glDisable(GL_TEXTURE_2D); 1334 glDisable(GL_BLEND); 1335 glColor4f(0,0,0,0); 1336 1337 GLfloat vertices[4][2]; 1338 glVertexPointer(2, GL_FLOAT, 0, vertices); 1339 Region::const_iterator it = region.begin(); 1340 Region::const_iterator const end = region.end(); 1341 while (it != end) { 1342 const Rect& r = *it++; 1343 vertices[0][0] = r.left; 1344 vertices[0][1] = r.top; 1345 vertices[1][0] = r.right; 1346 vertices[1][1] = r.top; 1347 vertices[2][0] = r.right; 1348 vertices[2][1] = r.bottom; 1349 vertices[3][0] = r.left; 1350 vertices[3][1] = r.bottom; 1351 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1352 } 1353} 1354 1355ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1356 const sp<LayerBaseClient>& lbc) 1357{ 1358 // attach this layer to the client 1359 size_t name = client->attachLayer(lbc); 1360 1361 // add this layer to the current state list 1362 Mutex::Autolock _l(mStateLock); 1363 mCurrentState.layersSortedByZ.add(lbc); 1364 1365 return ssize_t(name); 1366} 1367 1368status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1369{ 1370 Mutex::Autolock _l(mStateLock); 1371 status_t err = purgatorizeLayer_l(layer); 1372 if (err == NO_ERROR) 1373 setTransactionFlags(eTransactionNeeded); 1374 return err; 1375} 1376 1377status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1378{ 1379 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1380 if (index >= 0) { 1381 mLayersRemoved = true; 1382 return NO_ERROR; 1383 } 1384 return status_t(index); 1385} 1386 1387status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1388{ 1389 // First add the layer to the purgatory list, which makes sure it won't 1390 // go away, then remove it from the main list (through a transaction). 1391 ssize_t err = removeLayer_l(layerBase); 1392 if (err >= 0) { 1393 mLayerPurgatory.add(layerBase); 1394 } 1395 1396 mLayersPendingRemoval.push(layerBase); 1397 1398 // it's possible that we don't find a layer, because it might 1399 // have been destroyed already -- this is not technically an error 1400 // from the user because there is a race between Client::destroySurface(), 1401 // ~Client() and ~ISurface(). 1402 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1403} 1404 1405uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1406{ 1407 return android_atomic_release_load(&mTransactionFlags); 1408} 1409 1410uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1411{ 1412 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1413} 1414 1415uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1416{ 1417 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1418 if ((old & flags)==0) { // wake the server up 1419 signalTransaction(); 1420 } 1421 return old; 1422} 1423 1424void SurfaceFlinger::setTransactionState( 1425 const Vector<ComposerState>& state, 1426 const Vector<DisplayState>& displays, 1427 uint32_t flags) 1428{ 1429 Mutex::Autolock _l(mStateLock); 1430 uint32_t transactionFlags = 0; 1431 1432 size_t count = displays.size(); 1433 for (size_t i=0 ; i<count ; i++) { 1434 const DisplayState& s(displays[i]); 1435 transactionFlags |= setDisplayStateLocked(s); 1436 } 1437 1438 count = state.size(); 1439 for (size_t i=0 ; i<count ; i++) { 1440 const ComposerState& s(state[i]); 1441 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1442 transactionFlags |= setClientStateLocked(client, s.state); 1443 } 1444 1445 if (transactionFlags) { 1446 // this triggers the transaction 1447 setTransactionFlags(transactionFlags); 1448 1449 // if this is a synchronous transaction, wait for it to take effect 1450 // before returning. 1451 if (flags & eSynchronous) { 1452 mTransationPending = true; 1453 } 1454 while (mTransationPending) { 1455 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1456 if (CC_UNLIKELY(err != NO_ERROR)) { 1457 // just in case something goes wrong in SF, return to the 1458 // called after a few seconds. 1459 ALOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1460 mTransationPending = false; 1461 break; 1462 } 1463 } 1464 } 1465} 1466 1467uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1468{ 1469 uint32_t flags = 0; 1470 DisplayDeviceState& disp(mCurrentState.displays.editValueFor(s.token)); 1471 if (disp.id >= 0) { 1472 const uint32_t what = s.what; 1473 if (what & DisplayState::eSurfaceChanged) { 1474 if (disp.surface->asBinder() != s.surface->asBinder()) { 1475 disp.surface = s.surface; 1476 flags |= eDisplayTransactionNeeded; 1477 } 1478 } 1479 if (what & DisplayState::eLayerStackChanged) { 1480 if (disp.layerStack != s.layerStack) { 1481 disp.layerStack = s.layerStack; 1482 flags |= eDisplayTransactionNeeded; 1483 } 1484 } 1485 if (what & DisplayState::eOrientationChanged) { 1486 if (disp.orientation != s.orientation) { 1487 disp.orientation = s.orientation; 1488 flags |= eDisplayTransactionNeeded; 1489 } 1490 } 1491 if (what & DisplayState::eFrameChanged) { 1492 if (disp.frame != s.frame) { 1493 disp.frame = s.frame; 1494 flags |= eDisplayTransactionNeeded; 1495 } 1496 } 1497 if (what & DisplayState::eViewportChanged) { 1498 if (disp.viewport != s.viewport) { 1499 disp.viewport = s.viewport; 1500 flags |= eDisplayTransactionNeeded; 1501 } 1502 } 1503 } 1504 return flags; 1505} 1506 1507uint32_t SurfaceFlinger::setClientStateLocked( 1508 const sp<Client>& client, 1509 const layer_state_t& s) 1510{ 1511 uint32_t flags = 0; 1512 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1513 if (layer != 0) { 1514 const uint32_t what = s.what; 1515 if (what & layer_state_t::ePositionChanged) { 1516 if (layer->setPosition(s.x, s.y)) 1517 flags |= eTraversalNeeded; 1518 } 1519 if (what & layer_state_t::eLayerChanged) { 1520 // NOTE: index needs to be calculated before we update the state 1521 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1522 if (layer->setLayer(s.z)) { 1523 mCurrentState.layersSortedByZ.removeAt(idx); 1524 mCurrentState.layersSortedByZ.add(layer); 1525 // we need traversal (state changed) 1526 // AND transaction (list changed) 1527 flags |= eTransactionNeeded|eTraversalNeeded; 1528 } 1529 } 1530 if (what & layer_state_t::eSizeChanged) { 1531 if (layer->setSize(s.w, s.h)) { 1532 flags |= eTraversalNeeded; 1533 } 1534 } 1535 if (what & layer_state_t::eAlphaChanged) { 1536 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1537 flags |= eTraversalNeeded; 1538 } 1539 if (what & layer_state_t::eMatrixChanged) { 1540 if (layer->setMatrix(s.matrix)) 1541 flags |= eTraversalNeeded; 1542 } 1543 if (what & layer_state_t::eTransparentRegionChanged) { 1544 if (layer->setTransparentRegionHint(s.transparentRegion)) 1545 flags |= eTraversalNeeded; 1546 } 1547 if (what & layer_state_t::eVisibilityChanged) { 1548 if (layer->setFlags(s.flags, s.mask)) 1549 flags |= eTraversalNeeded; 1550 } 1551 if (what & layer_state_t::eCropChanged) { 1552 if (layer->setCrop(s.crop)) 1553 flags |= eTraversalNeeded; 1554 } 1555 if (what & layer_state_t::eLayerStackChanged) { 1556 // NOTE: index needs to be calculated before we update the state 1557 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1558 if (layer->setLayerStack(s.layerStack)) { 1559 mCurrentState.layersSortedByZ.removeAt(idx); 1560 mCurrentState.layersSortedByZ.add(layer); 1561 // we need traversal (state changed) 1562 // AND transaction (list changed) 1563 flags |= eTransactionNeeded|eTraversalNeeded; 1564 } 1565 } 1566 } 1567 return flags; 1568} 1569 1570sp<ISurface> SurfaceFlinger::createLayer( 1571 ISurfaceComposerClient::surface_data_t* params, 1572 const String8& name, 1573 const sp<Client>& client, 1574 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1575 uint32_t flags) 1576{ 1577 sp<LayerBaseClient> layer; 1578 sp<ISurface> surfaceHandle; 1579 1580 if (int32_t(w|h) < 0) { 1581 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1582 int(w), int(h)); 1583 return surfaceHandle; 1584 } 1585 1586 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1587 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1588 case ISurfaceComposerClient::eFXSurfaceNormal: 1589 layer = createNormalLayer(client, d, w, h, flags, format); 1590 break; 1591 case ISurfaceComposerClient::eFXSurfaceBlur: 1592 case ISurfaceComposerClient::eFXSurfaceDim: 1593 layer = createDimLayer(client, d, w, h, flags); 1594 break; 1595 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1596 layer = createScreenshotLayer(client, d, w, h, flags); 1597 break; 1598 } 1599 1600 if (layer != 0) { 1601 layer->initStates(w, h, flags); 1602 layer->setName(name); 1603 ssize_t token = addClientLayer(client, layer); 1604 surfaceHandle = layer->getSurface(); 1605 if (surfaceHandle != 0) { 1606 params->token = token; 1607 params->identity = layer->getIdentity(); 1608 } 1609 setTransactionFlags(eTransactionNeeded); 1610 } 1611 1612 return surfaceHandle; 1613} 1614 1615sp<Layer> SurfaceFlinger::createNormalLayer( 1616 const sp<Client>& client, DisplayID display, 1617 uint32_t w, uint32_t h, uint32_t flags, 1618 PixelFormat& format) 1619{ 1620 // initialize the surfaces 1621 switch (format) { 1622 case PIXEL_FORMAT_TRANSPARENT: 1623 case PIXEL_FORMAT_TRANSLUCENT: 1624 format = PIXEL_FORMAT_RGBA_8888; 1625 break; 1626 case PIXEL_FORMAT_OPAQUE: 1627#ifdef NO_RGBX_8888 1628 format = PIXEL_FORMAT_RGB_565; 1629#else 1630 format = PIXEL_FORMAT_RGBX_8888; 1631#endif 1632 break; 1633 } 1634 1635#ifdef NO_RGBX_8888 1636 if (format == PIXEL_FORMAT_RGBX_8888) 1637 format = PIXEL_FORMAT_RGBA_8888; 1638#endif 1639 1640 sp<Layer> layer = new Layer(this, display, client); 1641 status_t err = layer->setBuffers(w, h, format, flags); 1642 if (CC_LIKELY(err != NO_ERROR)) { 1643 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1644 layer.clear(); 1645 } 1646 return layer; 1647} 1648 1649sp<LayerDim> SurfaceFlinger::createDimLayer( 1650 const sp<Client>& client, DisplayID display, 1651 uint32_t w, uint32_t h, uint32_t flags) 1652{ 1653 sp<LayerDim> layer = new LayerDim(this, display, client); 1654 return layer; 1655} 1656 1657sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1658 const sp<Client>& client, DisplayID display, 1659 uint32_t w, uint32_t h, uint32_t flags) 1660{ 1661 sp<LayerScreenshot> layer = new LayerScreenshot(this, display, client); 1662 return layer; 1663} 1664 1665status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 1666{ 1667 /* 1668 * called by the window manager, when a surface should be marked for 1669 * destruction. 1670 * 1671 * The surface is removed from the current and drawing lists, but placed 1672 * in the purgatory queue, so it's not destroyed right-away (we need 1673 * to wait for all client's references to go away first). 1674 */ 1675 1676 status_t err = NAME_NOT_FOUND; 1677 Mutex::Autolock _l(mStateLock); 1678 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1679 1680 if (layer != 0) { 1681 err = purgatorizeLayer_l(layer); 1682 if (err == NO_ERROR) { 1683 setTransactionFlags(eTransactionNeeded); 1684 } 1685 } 1686 return err; 1687} 1688 1689status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 1690{ 1691 // called by ~ISurface() when all references are gone 1692 status_t err = NO_ERROR; 1693 sp<LayerBaseClient> l(layer.promote()); 1694 if (l != NULL) { 1695 Mutex::Autolock _l(mStateLock); 1696 err = removeLayer_l(l); 1697 if (err == NAME_NOT_FOUND) { 1698 // The surface wasn't in the current list, which means it was 1699 // removed already, which means it is in the purgatory, 1700 // and need to be removed from there. 1701 ssize_t idx = mLayerPurgatory.remove(l); 1702 ALOGE_IF(idx < 0, 1703 "layer=%p is not in the purgatory list", l.get()); 1704 } 1705 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1706 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1707 } 1708 return err; 1709} 1710 1711// --------------------------------------------------------------------------- 1712 1713void SurfaceFlinger::onScreenAcquired() { 1714 ALOGD("Screen about to return, flinger = %p", this); 1715 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice 1716 getHwComposer().acquire(); 1717 hw->acquireScreen(); 1718 mEventThread->onScreenAcquired(); 1719 mVisibleRegionsDirty = true; 1720 repaintEverything(); 1721} 1722 1723void SurfaceFlinger::onScreenReleased() { 1724 ALOGD("About to give-up screen, flinger = %p", this); 1725 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice 1726 if (hw->isScreenAcquired()) { 1727 mEventThread->onScreenReleased(); 1728 hw->releaseScreen(); 1729 getHwComposer().release(); 1730 // from this point on, SF will stop drawing 1731 } 1732} 1733 1734void SurfaceFlinger::unblank() { 1735 class MessageScreenAcquired : public MessageBase { 1736 SurfaceFlinger* flinger; 1737 public: 1738 MessageScreenAcquired(SurfaceFlinger* flinger) : flinger(flinger) { } 1739 virtual bool handler() { 1740 flinger->onScreenAcquired(); 1741 return true; 1742 } 1743 }; 1744 sp<MessageBase> msg = new MessageScreenAcquired(this); 1745 postMessageSync(msg); 1746} 1747 1748void SurfaceFlinger::blank() { 1749 class MessageScreenReleased : public MessageBase { 1750 SurfaceFlinger* flinger; 1751 public: 1752 MessageScreenReleased(SurfaceFlinger* flinger) : flinger(flinger) { } 1753 virtual bool handler() { 1754 flinger->onScreenReleased(); 1755 return true; 1756 } 1757 }; 1758 sp<MessageBase> msg = new MessageScreenReleased(this); 1759 postMessageSync(msg); 1760} 1761 1762// --------------------------------------------------------------------------- 1763 1764status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1765{ 1766 const size_t SIZE = 4096; 1767 char buffer[SIZE]; 1768 String8 result; 1769 1770 if (!PermissionCache::checkCallingPermission(sDump)) { 1771 snprintf(buffer, SIZE, "Permission Denial: " 1772 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1773 IPCThreadState::self()->getCallingPid(), 1774 IPCThreadState::self()->getCallingUid()); 1775 result.append(buffer); 1776 } else { 1777 // Try to get the main lock, but don't insist if we can't 1778 // (this would indicate SF is stuck, but we want to be able to 1779 // print something in dumpsys). 1780 int retry = 3; 1781 while (mStateLock.tryLock()<0 && --retry>=0) { 1782 usleep(1000000); 1783 } 1784 const bool locked(retry >= 0); 1785 if (!locked) { 1786 snprintf(buffer, SIZE, 1787 "SurfaceFlinger appears to be unresponsive, " 1788 "dumping anyways (no locks held)\n"); 1789 result.append(buffer); 1790 } 1791 1792 bool dumpAll = true; 1793 size_t index = 0; 1794 size_t numArgs = args.size(); 1795 if (numArgs) { 1796 if ((index < numArgs) && 1797 (args[index] == String16("--list"))) { 1798 index++; 1799 listLayersLocked(args, index, result, buffer, SIZE); 1800 dumpAll = false; 1801 } 1802 1803 if ((index < numArgs) && 1804 (args[index] == String16("--latency"))) { 1805 index++; 1806 dumpStatsLocked(args, index, result, buffer, SIZE); 1807 dumpAll = false; 1808 } 1809 1810 if ((index < numArgs) && 1811 (args[index] == String16("--latency-clear"))) { 1812 index++; 1813 clearStatsLocked(args, index, result, buffer, SIZE); 1814 dumpAll = false; 1815 } 1816 } 1817 1818 if (dumpAll) { 1819 dumpAllLocked(result, buffer, SIZE); 1820 } 1821 1822 if (locked) { 1823 mStateLock.unlock(); 1824 } 1825 } 1826 write(fd, result.string(), result.size()); 1827 return NO_ERROR; 1828} 1829 1830void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 1831 String8& result, char* buffer, size_t SIZE) const 1832{ 1833 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1834 const size_t count = currentLayers.size(); 1835 for (size_t i=0 ; i<count ; i++) { 1836 const sp<LayerBase>& layer(currentLayers[i]); 1837 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1838 result.append(buffer); 1839 } 1840} 1841 1842void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 1843 String8& result, char* buffer, size_t SIZE) const 1844{ 1845 String8 name; 1846 if (index < args.size()) { 1847 name = String8(args[index]); 1848 index++; 1849 } 1850 1851 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1852 const size_t count = currentLayers.size(); 1853 for (size_t i=0 ; i<count ; i++) { 1854 const sp<LayerBase>& layer(currentLayers[i]); 1855 if (name.isEmpty()) { 1856 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1857 result.append(buffer); 1858 } 1859 if (name.isEmpty() || (name == layer->getName())) { 1860 layer->dumpStats(result, buffer, SIZE); 1861 } 1862 } 1863} 1864 1865void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 1866 String8& result, char* buffer, size_t SIZE) const 1867{ 1868 String8 name; 1869 if (index < args.size()) { 1870 name = String8(args[index]); 1871 index++; 1872 } 1873 1874 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1875 const size_t count = currentLayers.size(); 1876 for (size_t i=0 ; i<count ; i++) { 1877 const sp<LayerBase>& layer(currentLayers[i]); 1878 if (name.isEmpty() || (name == layer->getName())) { 1879 layer->clearStats(); 1880 } 1881 } 1882} 1883 1884void SurfaceFlinger::dumpAllLocked( 1885 String8& result, char* buffer, size_t SIZE) const 1886{ 1887 // figure out if we're stuck somewhere 1888 const nsecs_t now = systemTime(); 1889 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1890 const nsecs_t inTransaction(mDebugInTransaction); 1891 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1892 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1893 1894 /* 1895 * Dump the visible layer list 1896 */ 1897 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1898 const size_t count = currentLayers.size(); 1899 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1900 result.append(buffer); 1901 for (size_t i=0 ; i<count ; i++) { 1902 const sp<LayerBase>& layer(currentLayers[i]); 1903 layer->dump(result, buffer, SIZE); 1904 } 1905 1906 /* 1907 * Dump the layers in the purgatory 1908 */ 1909 1910 const size_t purgatorySize = mLayerPurgatory.size(); 1911 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1912 result.append(buffer); 1913 for (size_t i=0 ; i<purgatorySize ; i++) { 1914 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1915 layer->shortDump(result, buffer, SIZE); 1916 } 1917 1918 /* 1919 * Dump Display state 1920 */ 1921 1922 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1923 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 1924 snprintf(buffer, SIZE, 1925 "+ DisplayDevice[%u]\n" 1926 " id=%x, layerStack=%u, (%4dx%4d), orient=%2d, tr=%08x, " 1927 "flips=%u, secure=%d, numLayers=%u\n", 1928 dpy, 1929 hw->getDisplayId(), hw->getLayerStack(), 1930 hw->getWidth(), hw->getHeight(), 1931 hw->getOrientation(), hw->getTransform().getType(), 1932 hw->getPageFlipCount(), 1933 hw->getSecureLayerVisible(), 1934 hw->getVisibleLayersSortedByZ().size()); 1935 result.append(buffer); 1936 } 1937 1938 /* 1939 * Dump SurfaceFlinger global state 1940 */ 1941 1942 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1943 result.append(buffer); 1944 1945 HWComposer& hwc(getHwComposer()); 1946 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1947 const GLExtensions& extensions(GLExtensions::getInstance()); 1948 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1949 extensions.getVendor(), 1950 extensions.getRenderer(), 1951 extensions.getVersion()); 1952 result.append(buffer); 1953 1954 snprintf(buffer, SIZE, "EGL : %s\n", 1955 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 1956 result.append(buffer); 1957 1958 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1959 result.append(buffer); 1960 1961 hw->undefinedRegion.dump(result, "undefinedRegion"); 1962 snprintf(buffer, SIZE, 1963 " orientation=%d, canDraw=%d\n", 1964 hw->getOrientation(), hw->canDraw()); 1965 result.append(buffer); 1966 snprintf(buffer, SIZE, 1967 " last eglSwapBuffers() time: %f us\n" 1968 " last transaction time : %f us\n" 1969 " transaction-flags : %08x\n" 1970 " refresh-rate : %f fps\n" 1971 " x-dpi : %f\n" 1972 " y-dpi : %f\n", 1973 mLastSwapBufferTime/1000.0, 1974 mLastTransactionTime/1000.0, 1975 mTransactionFlags, 1976 1e9 / hwc.getRefreshPeriod(), 1977 hwc.getDpiX(), 1978 hwc.getDpiY()); 1979 result.append(buffer); 1980 1981 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1982 inSwapBuffersDuration/1000.0); 1983 result.append(buffer); 1984 1985 snprintf(buffer, SIZE, " transaction time: %f us\n", 1986 inTransactionDuration/1000.0); 1987 result.append(buffer); 1988 1989 /* 1990 * VSYNC state 1991 */ 1992 mEventThread->dump(result, buffer, SIZE); 1993 1994 /* 1995 * Dump HWComposer state 1996 */ 1997 snprintf(buffer, SIZE, "h/w composer state:\n"); 1998 result.append(buffer); 1999 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2000 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2001 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2002 result.append(buffer); 2003 hwc.dump(result, buffer, SIZE, hw->getVisibleLayersSortedByZ()); 2004 2005 /* 2006 * Dump gralloc state 2007 */ 2008 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2009 alloc.dump(result); 2010 hw->dump(result); 2011} 2012 2013status_t SurfaceFlinger::onTransact( 2014 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2015{ 2016 switch (code) { 2017 case CREATE_CONNECTION: 2018 case SET_TRANSACTION_STATE: 2019 case BOOT_FINISHED: 2020 case BLANK: 2021 case UNBLANK: 2022 { 2023 // codes that require permission check 2024 IPCThreadState* ipc = IPCThreadState::self(); 2025 const int pid = ipc->getCallingPid(); 2026 const int uid = ipc->getCallingUid(); 2027 if ((uid != AID_GRAPHICS) && 2028 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2029 ALOGE("Permission Denial: " 2030 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2031 return PERMISSION_DENIED; 2032 } 2033 break; 2034 } 2035 case CAPTURE_SCREEN: 2036 { 2037 // codes that require permission check 2038 IPCThreadState* ipc = IPCThreadState::self(); 2039 const int pid = ipc->getCallingPid(); 2040 const int uid = ipc->getCallingUid(); 2041 if ((uid != AID_GRAPHICS) && 2042 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2043 ALOGE("Permission Denial: " 2044 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2045 return PERMISSION_DENIED; 2046 } 2047 break; 2048 } 2049 } 2050 2051 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2052 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2053 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2054 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2055 IPCThreadState* ipc = IPCThreadState::self(); 2056 const int pid = ipc->getCallingPid(); 2057 const int uid = ipc->getCallingUid(); 2058 ALOGE("Permission Denial: " 2059 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2060 return PERMISSION_DENIED; 2061 } 2062 int n; 2063 switch (code) { 2064 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2065 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2066 return NO_ERROR; 2067 case 1002: // SHOW_UPDATES 2068 n = data.readInt32(); 2069 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2070 invalidateHwcGeometry(); 2071 repaintEverything(); 2072 return NO_ERROR; 2073 case 1004:{ // repaint everything 2074 repaintEverything(); 2075 return NO_ERROR; 2076 } 2077 case 1005:{ // force transaction 2078 setTransactionFlags( 2079 eTransactionNeeded| 2080 eDisplayTransactionNeeded| 2081 eTraversalNeeded); 2082 return NO_ERROR; 2083 } 2084 case 1006:{ // send empty update 2085 signalRefresh(); 2086 return NO_ERROR; 2087 } 2088 case 1008: // toggle use of hw composer 2089 n = data.readInt32(); 2090 mDebugDisableHWC = n ? 1 : 0; 2091 invalidateHwcGeometry(); 2092 repaintEverything(); 2093 return NO_ERROR; 2094 case 1009: // toggle use of transform hint 2095 n = data.readInt32(); 2096 mDebugDisableTransformHint = n ? 1 : 0; 2097 invalidateHwcGeometry(); 2098 repaintEverything(); 2099 return NO_ERROR; 2100 case 1010: // interrogate. 2101 reply->writeInt32(0); 2102 reply->writeInt32(0); 2103 reply->writeInt32(mDebugRegion); 2104 reply->writeInt32(0); 2105 reply->writeInt32(mDebugDisableHWC); 2106 return NO_ERROR; 2107 case 1013: { 2108 Mutex::Autolock _l(mStateLock); 2109 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2110 reply->writeInt32(hw->getPageFlipCount()); 2111 } 2112 return NO_ERROR; 2113 } 2114 } 2115 return err; 2116} 2117 2118void SurfaceFlinger::repaintEverything() { 2119 android_atomic_or(1, &mRepaintEverything); 2120 signalTransaction(); 2121} 2122 2123// --------------------------------------------------------------------------- 2124 2125status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy, 2126 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2127{ 2128 Mutex::Autolock _l(mStateLock); 2129 return renderScreenToTextureLocked(dpy, textureName, uOut, vOut); 2130} 2131 2132status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 2133 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2134{ 2135 ATRACE_CALL(); 2136 2137 if (!GLExtensions::getInstance().haveFramebufferObject()) 2138 return INVALID_OPERATION; 2139 2140 // get screen geometry 2141 sp<const DisplayDevice> hw(getDisplayDevice(dpy)); 2142 const uint32_t hw_w = hw->getWidth(); 2143 const uint32_t hw_h = hw->getHeight(); 2144 GLfloat u = 1; 2145 GLfloat v = 1; 2146 2147 // make sure to clear all GL error flags 2148 while ( glGetError() != GL_NO_ERROR ) ; 2149 2150 // create a FBO 2151 GLuint name, tname; 2152 glGenTextures(1, &tname); 2153 glBindTexture(GL_TEXTURE_2D, tname); 2154 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2155 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2156 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2157 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2158 if (glGetError() != GL_NO_ERROR) { 2159 while ( glGetError() != GL_NO_ERROR ) ; 2160 GLint tw = (2 << (31 - clz(hw_w))); 2161 GLint th = (2 << (31 - clz(hw_h))); 2162 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2163 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2164 u = GLfloat(hw_w) / tw; 2165 v = GLfloat(hw_h) / th; 2166 } 2167 glGenFramebuffersOES(1, &name); 2168 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2169 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2170 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2171 2172 // redraw the screen entirely... 2173 glDisable(GL_TEXTURE_EXTERNAL_OES); 2174 glDisable(GL_TEXTURE_2D); 2175 glClearColor(0,0,0,1); 2176 glClear(GL_COLOR_BUFFER_BIT); 2177 glMatrixMode(GL_MODELVIEW); 2178 glLoadIdentity(); 2179 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2180 const size_t count = layers.size(); 2181 for (size_t i=0 ; i<count ; ++i) { 2182 const sp<LayerBase>& layer(layers[i]); 2183 layer->draw(hw); 2184 } 2185 2186 hw->compositionComplete(); 2187 2188 // back to main framebuffer 2189 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2190 glDeleteFramebuffersOES(1, &name); 2191 2192 *textureName = tname; 2193 *uOut = u; 2194 *vOut = v; 2195 return NO_ERROR; 2196} 2197 2198// --------------------------------------------------------------------------- 2199 2200status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2201 sp<IMemoryHeap>* heap, 2202 uint32_t* w, uint32_t* h, PixelFormat* f, 2203 uint32_t sw, uint32_t sh, 2204 uint32_t minLayerZ, uint32_t maxLayerZ) 2205{ 2206 ATRACE_CALL(); 2207 2208 status_t result = PERMISSION_DENIED; 2209 2210 // only one display supported for now 2211 if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) { 2212 ALOGE("invalid display %d", dpy); 2213 return BAD_VALUE; 2214 } 2215 2216 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2217 return INVALID_OPERATION; 2218 } 2219 2220 // get screen geometry 2221 sp<const DisplayDevice> hw(getDisplayDevice(dpy)); 2222 const uint32_t hw_w = hw->getWidth(); 2223 const uint32_t hw_h = hw->getHeight(); 2224 2225 // if we have secure windows on this display, never allow the screen capture 2226 if (hw->getSecureLayerVisible()) { 2227 ALOGW("FB is protected: PERMISSION_DENIED"); 2228 return PERMISSION_DENIED; 2229 } 2230 2231 if ((sw > hw_w) || (sh > hw_h)) { 2232 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2233 return BAD_VALUE; 2234 } 2235 2236 sw = (!sw) ? hw_w : sw; 2237 sh = (!sh) ? hw_h : sh; 2238 const size_t size = sw * sh * 4; 2239 const bool filtering = sw != hw_w || sh != hw_h; 2240 2241// ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2242// sw, sh, minLayerZ, maxLayerZ); 2243 2244 // make sure to clear all GL error flags 2245 while ( glGetError() != GL_NO_ERROR ) ; 2246 2247 // create a FBO 2248 GLuint name, tname; 2249 glGenRenderbuffersOES(1, &tname); 2250 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2251 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2252 2253 glGenFramebuffersOES(1, &name); 2254 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2255 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2256 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2257 2258 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2259 2260 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2261 2262 // invert everything, b/c glReadPixel() below will invert the FB 2263 glViewport(0, 0, sw, sh); 2264 glMatrixMode(GL_PROJECTION); 2265 glPushMatrix(); 2266 glLoadIdentity(); 2267 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2268 glMatrixMode(GL_MODELVIEW); 2269 2270 // redraw the screen entirely... 2271 glClearColor(0,0,0,1); 2272 glClear(GL_COLOR_BUFFER_BIT); 2273 2274 const LayerVector& layers(mDrawingState.layersSortedByZ); 2275 const size_t count = layers.size(); 2276 for (size_t i=0 ; i<count ; ++i) { 2277 const sp<LayerBase>& layer(layers[i]); 2278 const uint32_t flags = layer->drawingState().flags; 2279 if (!(flags & layer_state_t::eLayerHidden)) { 2280 const uint32_t z = layer->drawingState().z; 2281 if (z >= minLayerZ && z <= maxLayerZ) { 2282 if (filtering) layer->setFiltering(true); 2283 layer->draw(hw); 2284 if (filtering) layer->setFiltering(false); 2285 } 2286 } 2287 } 2288 2289 // check for errors and return screen capture 2290 if (glGetError() != GL_NO_ERROR) { 2291 // error while rendering 2292 result = INVALID_OPERATION; 2293 } else { 2294 // allocate shared memory large enough to hold the 2295 // screen capture 2296 sp<MemoryHeapBase> base( 2297 new MemoryHeapBase(size, 0, "screen-capture") ); 2298 void* const ptr = base->getBase(); 2299 if (ptr) { 2300 // capture the screen with glReadPixels() 2301 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2302 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2303 if (glGetError() == GL_NO_ERROR) { 2304 *heap = base; 2305 *w = sw; 2306 *h = sh; 2307 *f = PIXEL_FORMAT_RGBA_8888; 2308 result = NO_ERROR; 2309 } 2310 } else { 2311 result = NO_MEMORY; 2312 } 2313 } 2314 glViewport(0, 0, hw_w, hw_h); 2315 glMatrixMode(GL_PROJECTION); 2316 glPopMatrix(); 2317 glMatrixMode(GL_MODELVIEW); 2318 } else { 2319 result = BAD_VALUE; 2320 } 2321 2322 // release FBO resources 2323 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2324 glDeleteRenderbuffersOES(1, &tname); 2325 glDeleteFramebuffersOES(1, &name); 2326 2327 hw->compositionComplete(); 2328 2329// ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2330 2331 return result; 2332} 2333 2334 2335status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2336 sp<IMemoryHeap>* heap, 2337 uint32_t* width, uint32_t* height, PixelFormat* format, 2338 uint32_t sw, uint32_t sh, 2339 uint32_t minLayerZ, uint32_t maxLayerZ) 2340{ 2341 // only one display supported for now 2342 if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2343 return BAD_VALUE; 2344 2345 if (!GLExtensions::getInstance().haveFramebufferObject()) 2346 return INVALID_OPERATION; 2347 2348 class MessageCaptureScreen : public MessageBase { 2349 SurfaceFlinger* flinger; 2350 DisplayID dpy; 2351 sp<IMemoryHeap>* heap; 2352 uint32_t* w; 2353 uint32_t* h; 2354 PixelFormat* f; 2355 uint32_t sw; 2356 uint32_t sh; 2357 uint32_t minLayerZ; 2358 uint32_t maxLayerZ; 2359 status_t result; 2360 public: 2361 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2362 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2363 uint32_t sw, uint32_t sh, 2364 uint32_t minLayerZ, uint32_t maxLayerZ) 2365 : flinger(flinger), dpy(dpy), 2366 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2367 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2368 result(PERMISSION_DENIED) 2369 { 2370 } 2371 status_t getResult() const { 2372 return result; 2373 } 2374 virtual bool handler() { 2375 Mutex::Autolock _l(flinger->mStateLock); 2376 result = flinger->captureScreenImplLocked(dpy, 2377 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2378 return true; 2379 } 2380 }; 2381 2382 sp<MessageBase> msg = new MessageCaptureScreen(this, 2383 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2384 status_t res = postMessageSync(msg); 2385 if (res == NO_ERROR) { 2386 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2387 } 2388 return res; 2389} 2390 2391// --------------------------------------------------------------------------- 2392 2393SurfaceFlinger::LayerVector::LayerVector() { 2394} 2395 2396SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2397 : SortedVector<sp<LayerBase> >(rhs) { 2398} 2399 2400int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2401 const void* rhs) const 2402{ 2403 // sort layers per layer-stack, then by z-order and finally by sequence 2404 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2405 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2406 2407 uint32_t ls = l->currentState().layerStack; 2408 uint32_t rs = r->currentState().layerStack; 2409 if (ls != rs) 2410 return ls - rs; 2411 2412 uint32_t lz = l->currentState().z; 2413 uint32_t rz = r->currentState().z; 2414 if (lz != rz) 2415 return lz - rz; 2416 2417 return l->sequence - r->sequence; 2418} 2419 2420// --------------------------------------------------------------------------- 2421 2422SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() : id(-1) { 2423} 2424 2425SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(int32_t id) 2426 : id(id), layerStack(0), orientation(0) { 2427} 2428 2429// --------------------------------------------------------------------------- 2430 2431GraphicBufferAlloc::GraphicBufferAlloc() {} 2432 2433GraphicBufferAlloc::~GraphicBufferAlloc() {} 2434 2435sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2436 PixelFormat format, uint32_t usage, status_t* error) { 2437 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2438 status_t err = graphicBuffer->initCheck(); 2439 *error = err; 2440 if (err != 0 || graphicBuffer->handle == 0) { 2441 if (err == NO_MEMORY) { 2442 GraphicBuffer::dumpAllocationsToSystemLog(); 2443 } 2444 ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2445 "failed (%s), handle=%p", 2446 w, h, strerror(-err), graphicBuffer->handle); 2447 return 0; 2448 } 2449 return graphicBuffer; 2450} 2451 2452// --------------------------------------------------------------------------- 2453 2454}; // namespace android 2455