SurfaceFlinger.cpp revision 55801e41e6d7306d75d8134dd69d7d8cbbfbc63c
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 // restore initial conditions (default device unblank, etc) 141 initializeDisplays(); 142 143 // restart the boot-animation 144 startBootAnim(); 145} 146 147sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 148{ 149 sp<ISurfaceComposerClient> bclient; 150 sp<Client> client(new Client(this)); 151 status_t err = client->initCheck(); 152 if (err == NO_ERROR) { 153 bclient = client; 154 } 155 return bclient; 156} 157 158sp<IBinder> SurfaceFlinger::createDisplay() 159{ 160 class DisplayToken : public BBinder { 161 sp<SurfaceFlinger> flinger; 162 virtual ~DisplayToken() { 163 // no more references, this display must be terminated 164 Mutex::Autolock _l(flinger->mStateLock); 165 flinger->mCurrentState.displays.removeItem(this); 166 flinger->setTransactionFlags(eDisplayTransactionNeeded); 167 } 168 public: 169 DisplayToken(const sp<SurfaceFlinger>& flinger) 170 : flinger(flinger) { 171 } 172 }; 173 174 sp<BBinder> token = new DisplayToken(this); 175 176 Mutex::Autolock _l(mStateLock); 177 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 178 mCurrentState.displays.add(token, info); 179 180 return token; 181} 182 183sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 184 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 185 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 186 return NULL; 187 } 188 return mDefaultDisplays[id]; 189} 190 191sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 192{ 193 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 194 return gba; 195} 196 197void SurfaceFlinger::bootFinished() 198{ 199 const nsecs_t now = systemTime(); 200 const nsecs_t duration = now - mBootTime; 201 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 202 mBootFinished = true; 203 204 // wait patiently for the window manager death 205 const String16 name("window"); 206 sp<IBinder> window(defaultServiceManager()->getService(name)); 207 if (window != 0) { 208 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 209 } 210 211 // stop boot animation 212 // formerly we would just kill the process, but we now ask it to exit so it 213 // can choose where to stop the animation. 214 property_set("service.bootanim.exit", "1"); 215} 216 217void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 218 class MessageDestroyGLTexture : public MessageBase { 219 GLuint texture; 220 public: 221 MessageDestroyGLTexture(GLuint texture) 222 : texture(texture) { 223 } 224 virtual bool handler() { 225 glDeleteTextures(1, &texture); 226 return true; 227 } 228 }; 229 postMessageAsync(new MessageDestroyGLTexture(texture)); 230} 231 232status_t SurfaceFlinger::selectConfigForPixelFormat( 233 EGLDisplay dpy, 234 EGLint const* attrs, 235 PixelFormat format, 236 EGLConfig* outConfig) 237{ 238 EGLConfig config = NULL; 239 EGLint numConfigs = -1, n=0; 240 eglGetConfigs(dpy, NULL, 0, &numConfigs); 241 EGLConfig* const configs = new EGLConfig[numConfigs]; 242 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 243 for (int i=0 ; i<n ; i++) { 244 EGLint nativeVisualId = 0; 245 eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId); 246 if (nativeVisualId>0 && format == nativeVisualId) { 247 *outConfig = configs[i]; 248 delete [] configs; 249 return NO_ERROR; 250 } 251 } 252 delete [] configs; 253 return NAME_NOT_FOUND; 254} 255 256EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 257 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 258 // it is to be used with WIFI displays 259 EGLConfig config; 260 EGLint dummy; 261 status_t err; 262 EGLint attribs[] = { 263 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 264 EGL_RECORDABLE_ANDROID, EGL_TRUE, 265 EGL_NONE 266 }; 267 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 268 if (err) { 269 // maybe we failed because of EGL_RECORDABLE_ANDROID 270 ALOGW("couldn't find an EGLConfig with EGL_RECORDABLE_ANDROID"); 271 attribs[2] = EGL_NONE; 272 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 273 } 274 ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format"); 275 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) { 276 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 277 } 278 return config; 279} 280 281EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 282 // Also create our EGLContext 283 EGLint contextAttributes[] = { 284#ifdef EGL_IMG_context_priority 285#ifdef HAS_CONTEXT_PRIORITY 286#warning "using EGL_IMG_context_priority" 287 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 288#endif 289#endif 290 EGL_NONE, EGL_NONE 291 }; 292 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 293 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 294 return ctxt; 295} 296 297void SurfaceFlinger::initializeGL(EGLDisplay display, EGLSurface surface) { 298 EGLBoolean result = eglMakeCurrent(display, surface, surface, mEGLContext); 299 if (!result) { 300 ALOGE("Couldn't create a working GLES context. check logs. exiting..."); 301 exit(0); 302 } 303 304 GLExtensions& extensions(GLExtensions::getInstance()); 305 extensions.initWithGLStrings( 306 glGetString(GL_VENDOR), 307 glGetString(GL_RENDERER), 308 glGetString(GL_VERSION), 309 glGetString(GL_EXTENSIONS), 310 eglQueryString(display, EGL_VENDOR), 311 eglQueryString(display, EGL_VERSION), 312 eglQueryString(display, EGL_EXTENSIONS)); 313 314 EGLint w, h; 315 eglQuerySurface(display, surface, EGL_WIDTH, &w); 316 eglQuerySurface(display, surface, EGL_HEIGHT, &h); 317 318 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 319 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 320 321 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 322 glPixelStorei(GL_PACK_ALIGNMENT, 4); 323 glEnableClientState(GL_VERTEX_ARRAY); 324 glShadeModel(GL_FLAT); 325 glDisable(GL_DITHER); 326 glDisable(GL_CULL_FACE); 327 328 struct pack565 { 329 inline uint16_t operator() (int r, int g, int b) const { 330 return (r<<11)|(g<<5)|b; 331 } 332 } pack565; 333 334 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 335 glGenTextures(1, &mProtectedTexName); 336 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 337 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 338 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 339 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 340 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 341 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 342 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 343 344 glViewport(0, 0, w, h); 345 glMatrixMode(GL_PROJECTION); 346 glLoadIdentity(); 347 // put the origin in the left-bottom corner 348 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 349 350 // print some debugging info 351 EGLint r,g,b,a; 352 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 353 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 354 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 355 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 356 ALOGI("EGL informations:"); 357 ALOGI("vendor : %s", extensions.getEglVendor()); 358 ALOGI("version : %s", extensions.getEglVersion()); 359 ALOGI("extensions: %s", extensions.getEglExtension()); 360 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 361 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 362 ALOGI("OpenGL ES informations:"); 363 ALOGI("vendor : %s", extensions.getVendor()); 364 ALOGI("renderer : %s", extensions.getRenderer()); 365 ALOGI("version : %s", extensions.getVersion()); 366 ALOGI("extensions: %s", extensions.getExtension()); 367 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 368 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 369} 370 371status_t SurfaceFlinger::readyToRun() 372{ 373 ALOGI( "SurfaceFlinger's main thread ready to run. " 374 "Initializing graphics H/W..."); 375 376 // initialize EGL 377 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 378 eglInitialize(mEGLDisplay, NULL, NULL); 379 380 // Initialize the main display 381 // create native window to main display 382 sp<FramebufferSurface> fbs = FramebufferSurface::create(); 383 if (fbs == NULL) { 384 ALOGE("Display subsystem failed to initialize. check logs. exiting..."); 385 exit(0); 386 } 387 388 sp<SurfaceTextureClient> stc(new SurfaceTextureClient( 389 static_cast<sp<ISurfaceTexture> >(fbs->getBufferQueue()))); 390 391 // initialize the config and context 392 int format; 393 ANativeWindow* const anw = stc.get(); 394 anw->query(anw, NATIVE_WINDOW_FORMAT, &format); 395 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 396 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 397 398 // initialize our main display hardware 399 400 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 401 mDefaultDisplays[i] = new BBinder(); 402 mCurrentState.displays.add(mDefaultDisplays[i], 403 DisplayDeviceState((DisplayDevice::DisplayType)i)); 404 } 405 sp<DisplayDevice> hw = new DisplayDevice(this, 406 DisplayDevice::DISPLAY_PRIMARY, 407 mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY], 408 anw, fbs, mEGLConfig); 409 mDisplays.add(mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY], hw); 410 411 // initialize OpenGL ES 412 EGLSurface surface = hw->getEGLSurface(); 413 initializeGL(mEGLDisplay, surface); 414 415 // start the EventThread 416 mEventThread = new EventThread(this); 417 mEventQueue.setEventThread(mEventThread); 418 419 // initialize the H/W composer 420 mHwc = new HWComposer(this, 421 *static_cast<HWComposer::EventHandler *>(this), 422 fbs->getFbHal()); 423 424 // initialize our drawing state 425 mDrawingState = mCurrentState; 426 427 // We're now ready to accept clients... 428 mReadyToRunBarrier.open(); 429 430 // set initial conditions (e.g. unblank default device) 431 initializeDisplays(); 432 433 // start boot animation 434 startBootAnim(); 435 436 return NO_ERROR; 437} 438 439int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 440 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 441 type : mHwc->allocateDisplayId(); 442} 443 444void SurfaceFlinger::startBootAnim() { 445 // start boot animation 446 property_set("service.bootanim.exit", "0"); 447 property_set("ctl.start", "bootanim"); 448} 449 450uint32_t SurfaceFlinger::getMaxTextureSize() const { 451 return mMaxTextureSize; 452} 453 454uint32_t SurfaceFlinger::getMaxViewportDims() const { 455 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 456 mMaxViewportDims[0] : mMaxViewportDims[1]; 457} 458 459// ---------------------------------------------------------------------------- 460 461bool SurfaceFlinger::authenticateSurfaceTexture( 462 const sp<ISurfaceTexture>& surfaceTexture) const { 463 Mutex::Autolock _l(mStateLock); 464 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 465 466 // Check the visible layer list for the ISurface 467 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 468 size_t count = currentLayers.size(); 469 for (size_t i=0 ; i<count ; i++) { 470 const sp<LayerBase>& layer(currentLayers[i]); 471 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 472 if (lbc != NULL) { 473 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 474 if (lbcBinder == surfaceTextureBinder) { 475 return true; 476 } 477 } 478 } 479 480 // Check the layers in the purgatory. This check is here so that if a 481 // SurfaceTexture gets destroyed before all the clients are done using it, 482 // the error will not be reported as "surface XYZ is not authenticated", but 483 // will instead fail later on when the client tries to use the surface, 484 // which should be reported as "surface XYZ returned an -ENODEV". The 485 // purgatorized layers are no less authentic than the visible ones, so this 486 // should not cause any harm. 487 size_t purgatorySize = mLayerPurgatory.size(); 488 for (size_t i=0 ; i<purgatorySize ; i++) { 489 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 490 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 491 if (lbc != NULL) { 492 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 493 if (lbcBinder == surfaceTextureBinder) { 494 return true; 495 } 496 } 497 } 498 499 return false; 500} 501 502status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 503 // TODO: this is mostly here only for compatibility 504 // the display size is needed but the display metrics should come from elsewhere 505 if (display != mDefaultDisplays[ISurfaceComposer::eDisplayIdMain]) { 506 // TODO: additional displays not yet supported 507 return BAD_INDEX; 508 } 509 510 const HWComposer& hwc(getHwComposer()); 511 float xdpi = hwc.getDpiX(); 512 float ydpi = hwc.getDpiY(); 513 514 // TODO: Not sure if display density should handled by SF any longer 515 class Density { 516 static int getDensityFromProperty(char const* propName) { 517 char property[PROPERTY_VALUE_MAX]; 518 int density = 0; 519 if (property_get(propName, property, NULL) > 0) { 520 density = atoi(property); 521 } 522 return density; 523 } 524 public: 525 static int getEmuDensity() { 526 return getDensityFromProperty("qemu.sf.lcd_density"); } 527 static int getBuildDensity() { 528 return getDensityFromProperty("ro.sf.lcd_density"); } 529 }; 530 // The density of the device is provided by a build property 531 float density = Density::getBuildDensity() / 160.0f; 532 if (density == 0) { 533 // the build doesn't provide a density -- this is wrong! 534 // use xdpi instead 535 ALOGE("ro.sf.lcd_density must be defined as a build property"); 536 density = xdpi / 160.0f; 537 } 538 if (Density::getEmuDensity()) { 539 // if "qemu.sf.lcd_density" is specified, it overrides everything 540 xdpi = ydpi = density = Density::getEmuDensity(); 541 density /= 160.0f; 542 } 543 544 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 545 info->w = hw->getWidth(); 546 info->h = hw->getHeight(); 547 info->xdpi = xdpi; 548 info->ydpi = ydpi; 549 info->fps = float(1e9 / hwc.getRefreshPeriod()); 550 info->density = density; 551 info->orientation = hw->getOrientation(); 552 // TODO: this needs to go away (currently needed only by webkit) 553 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 554 return NO_ERROR; 555} 556 557// ---------------------------------------------------------------------------- 558 559sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 560 return mEventThread->createEventConnection(); 561} 562 563void SurfaceFlinger::connectDisplay(const sp<ISurfaceTexture>& surface) { 564 565 sp<IBinder> token; 566 { // scope for the lock 567 Mutex::Autolock _l(mStateLock); 568 token = mExtDisplayToken; 569 } 570 571 if (token == 0) { 572 token = createDisplay(); 573 } 574 575 { // scope for the lock 576 Mutex::Autolock _l(mStateLock); 577 if (surface == 0) { 578 // release our current display. we're guarantee to have 579 // a reference to it (token), while we hold the lock 580 mExtDisplayToken = 0; 581 } else { 582 mExtDisplayToken = token; 583 } 584 585 DisplayDeviceState& info(mCurrentState.displays.editValueFor(token)); 586 info.surface = surface; 587 setTransactionFlags(eDisplayTransactionNeeded); 588 } 589} 590 591// ---------------------------------------------------------------------------- 592 593void SurfaceFlinger::waitForEvent() { 594 mEventQueue.waitMessage(); 595} 596 597void SurfaceFlinger::signalTransaction() { 598 mEventQueue.invalidate(); 599} 600 601void SurfaceFlinger::signalLayerUpdate() { 602 mEventQueue.invalidate(); 603} 604 605void SurfaceFlinger::signalRefresh() { 606 mEventQueue.refresh(); 607} 608 609status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 610 nsecs_t reltime, uint32_t flags) { 611 return mEventQueue.postMessage(msg, reltime); 612} 613 614status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 615 nsecs_t reltime, uint32_t flags) { 616 status_t res = mEventQueue.postMessage(msg, reltime); 617 if (res == NO_ERROR) { 618 msg->wait(); 619 } 620 return res; 621} 622 623bool SurfaceFlinger::threadLoop() { 624 waitForEvent(); 625 return true; 626} 627 628void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 629 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 630 // we should only receive DisplayDevice::DisplayType from the vsync callback 631 const wp<IBinder>& token(mDefaultDisplays[type]); 632 mEventThread->onVSyncReceived(token, timestamp); 633 } 634} 635 636void SurfaceFlinger::eventControl(int event, int enabled) { 637 getHwComposer().eventControl(event, enabled); 638} 639 640void SurfaceFlinger::onMessageReceived(int32_t what) { 641 ATRACE_CALL(); 642 switch (what) { 643 case MessageQueue::INVALIDATE: 644 handleMessageTransaction(); 645 handleMessageInvalidate(); 646 signalRefresh(); 647 break; 648 case MessageQueue::REFRESH: 649 handleMessageRefresh(); 650 break; 651 } 652} 653 654void SurfaceFlinger::handleMessageTransaction() { 655 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 656 if (transactionFlags) { 657 handleTransaction(transactionFlags); 658 } 659} 660 661void SurfaceFlinger::handleMessageInvalidate() { 662 ATRACE_CALL(); 663 handlePageFlip(); 664} 665 666void SurfaceFlinger::handleMessageRefresh() { 667 ATRACE_CALL(); 668 preComposition(); 669 rebuildLayerStacks(); 670 setUpHWComposer(); 671 doDebugFlashRegions(); 672 doComposition(); 673 postComposition(); 674} 675 676void SurfaceFlinger::doDebugFlashRegions() 677{ 678 // is debugging enabled 679 if (CC_LIKELY(!mDebugRegion)) 680 return; 681 682 const bool repaintEverything = mRepaintEverything; 683 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 684 const sp<DisplayDevice>& hw(mDisplays[dpy]); 685 if (hw->canDraw()) { 686 // transform the dirty region into this screen's coordinate space 687 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 688 if (!dirtyRegion.isEmpty()) { 689 // redraw the whole screen 690 doComposeSurfaces(hw, Region(hw->bounds())); 691 692 // and draw the dirty region 693 glDisable(GL_TEXTURE_EXTERNAL_OES); 694 glDisable(GL_TEXTURE_2D); 695 glDisable(GL_BLEND); 696 glColor4f(1, 0, 1, 1); 697 const int32_t height = hw->getHeight(); 698 Region::const_iterator it = dirtyRegion.begin(); 699 Region::const_iterator const end = dirtyRegion.end(); 700 while (it != end) { 701 const Rect& r = *it++; 702 GLfloat vertices[][2] = { 703 { r.left, height - r.top }, 704 { r.left, height - r.bottom }, 705 { r.right, height - r.bottom }, 706 { r.right, height - r.top } 707 }; 708 glVertexPointer(2, GL_FLOAT, 0, vertices); 709 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 710 } 711 hw->compositionComplete(); 712 // FIXME 713 if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) { 714 eglSwapBuffers(mEGLDisplay, hw->getEGLSurface()); 715 } 716 } 717 } 718 } 719 720 postFramebuffer(); 721 722 if (mDebugRegion > 1) { 723 usleep(mDebugRegion * 1000); 724 } 725} 726 727void SurfaceFlinger::preComposition() 728{ 729 bool needExtraInvalidate = false; 730 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 731 const size_t count = currentLayers.size(); 732 for (size_t i=0 ; i<count ; i++) { 733 if (currentLayers[i]->onPreComposition()) { 734 needExtraInvalidate = true; 735 } 736 } 737 if (needExtraInvalidate) { 738 signalLayerUpdate(); 739 } 740} 741 742void SurfaceFlinger::postComposition() 743{ 744 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 745 const size_t count = currentLayers.size(); 746 for (size_t i=0 ; i<count ; i++) { 747 currentLayers[i]->onPostComposition(); 748 } 749} 750 751void SurfaceFlinger::rebuildLayerStacks() { 752 // rebuild the visible layer list per screen 753 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 754 ATRACE_CALL(); 755 mVisibleRegionsDirty = false; 756 invalidateHwcGeometry(); 757 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 758 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 759 const sp<DisplayDevice>& hw(mDisplays[dpy]); 760 Region opaqueRegion; 761 Region dirtyRegion; 762 computeVisibleRegions(currentLayers, 763 hw->getLayerStack(), dirtyRegion, opaqueRegion); 764 hw->dirtyRegion.orSelf(dirtyRegion); 765 766 Vector< sp<LayerBase> > layersSortedByZ; 767 const size_t count = currentLayers.size(); 768 for (size_t i=0 ; i<count ; i++) { 769 const Layer::State& s(currentLayers[i]->drawingState()); 770 if (s.layerStack == hw->getLayerStack()) { 771 if (!currentLayers[i]->visibleRegion.isEmpty()) { 772 layersSortedByZ.add(currentLayers[i]); 773 } 774 } 775 } 776 hw->setVisibleLayersSortedByZ(layersSortedByZ); 777 hw->undefinedRegion.set(hw->getBounds()); 778 hw->undefinedRegion.subtractSelf( 779 hw->getTransform().transform(opaqueRegion)); 780 } 781 } 782} 783 784void SurfaceFlinger::setUpHWComposer() { 785 HWComposer& hwc(getHwComposer()); 786 if (hwc.initCheck() == NO_ERROR) { 787 // build the h/w work list 788 const bool workListsDirty = mHwWorkListDirty; 789 mHwWorkListDirty = false; 790 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 791 sp<const DisplayDevice> hw(mDisplays[dpy]); 792 const int32_t id = hw->getHwcDisplayId(); 793 if (id >= 0) { 794 const Vector< sp<LayerBase> >& currentLayers( 795 hw->getVisibleLayersSortedByZ()); 796 const size_t count = currentLayers.size(); 797 if (hwc.createWorkList(id, count) >= 0) { 798 HWComposer::LayerListIterator cur = hwc.begin(id); 799 const HWComposer::LayerListIterator end = hwc.end(id); 800 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 801 const sp<LayerBase>& layer(currentLayers[i]); 802 803 if (CC_UNLIKELY(workListsDirty)) { 804 layer->setGeometry(hw, *cur); 805 if (mDebugDisableHWC || mDebugRegion) { 806 cur->setSkip(true); 807 } 808 } 809 810 /* 811 * update the per-frame h/w composer data for each layer 812 * and build the transparent region of the FB 813 */ 814 layer->setPerFrameData(hw, *cur); 815 } 816 } 817 } 818 } 819 status_t err = hwc.prepare(); 820 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 821 } 822} 823 824void SurfaceFlinger::doComposition() { 825 ATRACE_CALL(); 826 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 827 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 828 const sp<DisplayDevice>& hw(mDisplays[dpy]); 829 if (hw->canDraw()) { 830 // transform the dirty region into this screen's coordinate space 831 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 832 if (!dirtyRegion.isEmpty()) { 833 // repaint the framebuffer (if needed) 834 doDisplayComposition(hw, dirtyRegion); 835 } 836 hw->dirtyRegion.clear(); 837 hw->flip(hw->swapRegion); 838 hw->swapRegion.clear(); 839 } 840 // inform the h/w that we're done compositing 841 hw->compositionComplete(); 842 } 843 postFramebuffer(); 844} 845 846void SurfaceFlinger::postFramebuffer() 847{ 848 ATRACE_CALL(); 849 850 const nsecs_t now = systemTime(); 851 mDebugInSwapBuffers = now; 852 853 HWComposer& hwc(getHwComposer()); 854 if (hwc.initCheck() == NO_ERROR) { 855 // FIXME: EGL spec says: 856 // "surface must be bound to the calling thread's current context, 857 // for the current rendering API." 858 DisplayDevice::makeCurrent(getDefaultDisplayDevice(), mEGLContext); 859 hwc.commit(); 860 } 861 862 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 863 sp<const DisplayDevice> hw(mDisplays[dpy]); 864 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 865 const size_t count = currentLayers.size(); 866 int32_t id = hw->getHwcDisplayId(); 867 if (id >=0 && hwc.initCheck() == NO_ERROR) { 868 HWComposer::LayerListIterator cur = hwc.begin(id); 869 const HWComposer::LayerListIterator end = hwc.end(id); 870 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 871 currentLayers[i]->onLayerDisplayed(hw, &*cur); 872 } 873 } else { 874 for (size_t i = 0; i < count; i++) { 875 currentLayers[i]->onLayerDisplayed(hw, NULL); 876 } 877 } 878 } 879 880 mLastSwapBufferTime = systemTime() - now; 881 mDebugInSwapBuffers = 0; 882} 883 884void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 885{ 886 ATRACE_CALL(); 887 888 Mutex::Autolock _l(mStateLock); 889 const nsecs_t now = systemTime(); 890 mDebugInTransaction = now; 891 892 // Here we're guaranteed that some transaction flags are set 893 // so we can call handleTransactionLocked() unconditionally. 894 // We call getTransactionFlags(), which will also clear the flags, 895 // with mStateLock held to guarantee that mCurrentState won't change 896 // until the transaction is committed. 897 898 transactionFlags = getTransactionFlags(eTransactionMask); 899 handleTransactionLocked(transactionFlags); 900 901 mLastTransactionTime = systemTime() - now; 902 mDebugInTransaction = 0; 903 invalidateHwcGeometry(); 904 // here the transaction has been committed 905} 906 907void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 908{ 909 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 910 const size_t count = currentLayers.size(); 911 912 /* 913 * Traversal of the children 914 * (perform the transaction for each of them if needed) 915 */ 916 917 if (transactionFlags & eTraversalNeeded) { 918 for (size_t i=0 ; i<count ; i++) { 919 const sp<LayerBase>& layer = currentLayers[i]; 920 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 921 if (!trFlags) continue; 922 923 const uint32_t flags = layer->doTransaction(0); 924 if (flags & Layer::eVisibleRegion) 925 mVisibleRegionsDirty = true; 926 } 927 } 928 929 /* 930 * Perform display own transactions if needed 931 */ 932 933 if (transactionFlags & eDisplayTransactionNeeded) { 934 // here we take advantage of Vector's copy-on-write semantics to 935 // improve performance by skipping the transaction entirely when 936 // know that the lists are identical 937 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 938 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 939 if (!curr.isIdenticalTo(draw)) { 940 mVisibleRegionsDirty = true; 941 const size_t cc = curr.size(); 942 const size_t dc = draw.size(); 943 944 // find the displays that were removed 945 // (ie: in drawing state but not in current state) 946 // also handle displays that changed 947 // (ie: displays that are in both lists) 948 for (size_t i=0 ; i<dc ; i++) { 949 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 950 if (j < 0) { 951 // in drawing state but not in current state 952 if (!draw[i].isMainDisplay()) { 953 mDisplays.removeItem(draw.keyAt(i)); 954 } else { 955 ALOGW("trying to remove the main display"); 956 } 957 } else { 958 // this display is in both lists. see if something changed. 959 const DisplayDeviceState& state(curr[j]); 960 const wp<IBinder>& display(curr.keyAt(j)); 961 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 962 // changing the surface is like destroying and 963 // recreating the DisplayDevice 964 sp<SurfaceTextureClient> stc( 965 new SurfaceTextureClient(state.surface)); 966 sp<DisplayDevice> disp = new DisplayDevice(this, 967 state.type, display, stc, NULL, mEGLConfig); 968 969 disp->setLayerStack(state.layerStack); 970 disp->setOrientation(state.orientation); 971 // TODO: take viewport and frame into account 972 mDisplays.replaceValueFor(display, disp); 973 } 974 if (state.layerStack != draw[i].layerStack) { 975 const sp<DisplayDevice>& disp(getDisplayDevice(display)); 976 disp->setLayerStack(state.layerStack); 977 } 978 if (state.orientation != draw[i].orientation || 979 state.viewport != draw[i].viewport || 980 state.frame != draw[i].frame) { 981 const sp<DisplayDevice>& disp(getDisplayDevice(display)); 982 disp->setOrientation(state.orientation); 983 // TODO: take viewport and frame into account 984 } 985 } 986 } 987 988 // find displays that were added 989 // (ie: in current state but not in drawing state) 990 for (size_t i=0 ; i<cc ; i++) { 991 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 992 const DisplayDeviceState& state(curr[i]); 993 sp<SurfaceTextureClient> stc( 994 new SurfaceTextureClient(state.surface)); 995 const wp<IBinder>& display(curr.keyAt(i)); 996 sp<DisplayDevice> disp = new DisplayDevice(this, 997 state.type, display, stc, 0, mEGLConfig); 998 mDisplays.add(display, disp); 999 } 1000 } 1001 } 1002 } 1003 1004 /* 1005 * Perform our own transaction if needed 1006 */ 1007 1008 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1009 if (currentLayers.size() > previousLayers.size()) { 1010 // layers have been added 1011 mVisibleRegionsDirty = true; 1012 } 1013 1014 // some layers might have been removed, so 1015 // we need to update the regions they're exposing. 1016 if (mLayersRemoved) { 1017 mLayersRemoved = false; 1018 mVisibleRegionsDirty = true; 1019 const size_t count = previousLayers.size(); 1020 for (size_t i=0 ; i<count ; i++) { 1021 const sp<LayerBase>& layer(previousLayers[i]); 1022 if (currentLayers.indexOf(layer) < 0) { 1023 // this layer is not visible anymore 1024 // TODO: we could traverse the tree from front to back and 1025 // compute the actual visible region 1026 // TODO: we could cache the transformed region 1027 Layer::State front(layer->drawingState()); 1028 Region visibleReg = front.transform.transform( 1029 Region(Rect(front.active.w, front.active.h))); 1030 invalidateLayerStack(front.layerStack, visibleReg); 1031 } 1032 } 1033 } 1034 1035 commitTransaction(); 1036} 1037 1038void SurfaceFlinger::commitTransaction() 1039{ 1040 if (!mLayersPendingRemoval.isEmpty()) { 1041 // Notify removed layers now that they can't be drawn from 1042 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1043 mLayersPendingRemoval[i]->onRemoved(); 1044 } 1045 mLayersPendingRemoval.clear(); 1046 } 1047 1048 mDrawingState = mCurrentState; 1049 mTransationPending = false; 1050 mTransactionCV.broadcast(); 1051} 1052 1053void SurfaceFlinger::computeVisibleRegions( 1054 const LayerVector& currentLayers, uint32_t layerStack, 1055 Region& outDirtyRegion, Region& outOpaqueRegion) 1056{ 1057 ATRACE_CALL(); 1058 1059 Region aboveOpaqueLayers; 1060 Region aboveCoveredLayers; 1061 Region dirty; 1062 1063 outDirtyRegion.clear(); 1064 1065 size_t i = currentLayers.size(); 1066 while (i--) { 1067 const sp<LayerBase>& layer = currentLayers[i]; 1068 1069 // start with the whole surface at its current location 1070 const Layer::State& s(layer->drawingState()); 1071 1072 // only consider the layers on the given later stack 1073 if (s.layerStack != layerStack) 1074 continue; 1075 1076 /* 1077 * opaqueRegion: area of a surface that is fully opaque. 1078 */ 1079 Region opaqueRegion; 1080 1081 /* 1082 * visibleRegion: area of a surface that is visible on screen 1083 * and not fully transparent. This is essentially the layer's 1084 * footprint minus the opaque regions above it. 1085 * Areas covered by a translucent surface are considered visible. 1086 */ 1087 Region visibleRegion; 1088 1089 /* 1090 * coveredRegion: area of a surface that is covered by all 1091 * visible regions above it (which includes the translucent areas). 1092 */ 1093 Region coveredRegion; 1094 1095 1096 // handle hidden surfaces by setting the visible region to empty 1097 if (CC_LIKELY(!(s.flags & layer_state_t::eLayerHidden) && s.alpha)) { 1098 const bool translucent = !layer->isOpaque(); 1099 Rect bounds(layer->computeBounds()); 1100 visibleRegion.set(bounds); 1101 if (!visibleRegion.isEmpty()) { 1102 // Remove the transparent area from the visible region 1103 if (translucent) { 1104 Region transparentRegionScreen; 1105 const Transform tr(s.transform); 1106 if (tr.transformed()) { 1107 if (tr.preserveRects()) { 1108 // transform the transparent region 1109 transparentRegionScreen = tr.transform(s.transparentRegion); 1110 } else { 1111 // transformation too complex, can't do the 1112 // transparent region optimization. 1113 transparentRegionScreen.clear(); 1114 } 1115 } else { 1116 transparentRegionScreen = s.transparentRegion; 1117 } 1118 visibleRegion.subtractSelf(transparentRegionScreen); 1119 } 1120 1121 // compute the opaque region 1122 const int32_t layerOrientation = s.transform.getOrientation(); 1123 if (s.alpha==255 && !translucent && 1124 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1125 // the opaque region is the layer's footprint 1126 opaqueRegion = visibleRegion; 1127 } 1128 } 1129 } 1130 1131 // Clip the covered region to the visible region 1132 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1133 1134 // Update aboveCoveredLayers for next (lower) layer 1135 aboveCoveredLayers.orSelf(visibleRegion); 1136 1137 // subtract the opaque region covered by the layers above us 1138 visibleRegion.subtractSelf(aboveOpaqueLayers); 1139 1140 // compute this layer's dirty region 1141 if (layer->contentDirty) { 1142 // we need to invalidate the whole region 1143 dirty = visibleRegion; 1144 // as well, as the old visible region 1145 dirty.orSelf(layer->visibleRegion); 1146 layer->contentDirty = false; 1147 } else { 1148 /* compute the exposed region: 1149 * the exposed region consists of two components: 1150 * 1) what's VISIBLE now and was COVERED before 1151 * 2) what's EXPOSED now less what was EXPOSED before 1152 * 1153 * note that (1) is conservative, we start with the whole 1154 * visible region but only keep what used to be covered by 1155 * something -- which mean it may have been exposed. 1156 * 1157 * (2) handles areas that were not covered by anything but got 1158 * exposed because of a resize. 1159 */ 1160 const Region newExposed = visibleRegion - coveredRegion; 1161 const Region oldVisibleRegion = layer->visibleRegion; 1162 const Region oldCoveredRegion = layer->coveredRegion; 1163 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1164 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1165 } 1166 dirty.subtractSelf(aboveOpaqueLayers); 1167 1168 // accumulate to the screen dirty region 1169 outDirtyRegion.orSelf(dirty); 1170 1171 // Update aboveOpaqueLayers for next (lower) layer 1172 aboveOpaqueLayers.orSelf(opaqueRegion); 1173 1174 // Store the visible region is screen space 1175 layer->setVisibleRegion(visibleRegion); 1176 layer->setCoveredRegion(coveredRegion); 1177 } 1178 1179 outOpaqueRegion = aboveOpaqueLayers; 1180} 1181 1182void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1183 const Region& dirty) { 1184 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1185 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1186 if (hw->getLayerStack() == layerStack) { 1187 hw->dirtyRegion.orSelf(dirty); 1188 } 1189 } 1190} 1191 1192void SurfaceFlinger::handlePageFlip() 1193{ 1194 Region dirtyRegion; 1195 1196 bool visibleRegions = false; 1197 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1198 const size_t count = currentLayers.size(); 1199 for (size_t i=0 ; i<count ; i++) { 1200 const sp<LayerBase>& layer(currentLayers[i]); 1201 const Region dirty(layer->latchBuffer(visibleRegions)); 1202 Layer::State s(layer->drawingState()); 1203 invalidateLayerStack(s.layerStack, dirty); 1204 } 1205 1206 mVisibleRegionsDirty |= visibleRegions; 1207} 1208 1209void SurfaceFlinger::invalidateHwcGeometry() 1210{ 1211 mHwWorkListDirty = true; 1212} 1213 1214 1215void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1216 const Region& inDirtyRegion) 1217{ 1218 Region dirtyRegion(inDirtyRegion); 1219 1220 // compute the invalid region 1221 hw->swapRegion.orSelf(dirtyRegion); 1222 1223 uint32_t flags = hw->getFlags(); 1224 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1225 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1226 // takes a rectangle, we must make sure to update that whole 1227 // rectangle in that case 1228 dirtyRegion.set(hw->swapRegion.bounds()); 1229 } else { 1230 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1231 // We need to redraw the rectangle that will be updated 1232 // (pushed to the framebuffer). 1233 // This is needed because PARTIAL_UPDATES only takes one 1234 // rectangle instead of a region (see DisplayDevice::flip()) 1235 dirtyRegion.set(hw->swapRegion.bounds()); 1236 } else { 1237 // we need to redraw everything (the whole screen) 1238 dirtyRegion.set(hw->bounds()); 1239 hw->swapRegion = dirtyRegion; 1240 } 1241 } 1242 1243 doComposeSurfaces(hw, dirtyRegion); 1244 1245 // FIXME: we need to call eglSwapBuffers() on displays that have 1246 // GL composition and only on those. 1247 // however, currently hwc.commit() already does that for the main 1248 // display and never for the other ones 1249 if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) { 1250 // FIXME: EGL spec says: 1251 // "surface must be bound to the calling thread's current context, 1252 // for the current rendering API." 1253 eglSwapBuffers(mEGLDisplay, hw->getEGLSurface()); 1254 } 1255 1256 // update the swap region and clear the dirty region 1257 hw->swapRegion.orSelf(dirtyRegion); 1258} 1259 1260void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1261{ 1262 HWComposer& hwc(getHwComposer()); 1263 int32_t id = hw->getHwcDisplayId(); 1264 HWComposer::LayerListIterator cur = hwc.begin(id); 1265 const HWComposer::LayerListIterator end = hwc.end(id); 1266 1267 const bool hasGlesComposition = hwc.hasGlesComposition(id); 1268 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1269 if (cur==end || hasGlesComposition) { 1270 1271 DisplayDevice::makeCurrent(hw, mEGLContext); 1272 1273 // set the frame buffer 1274 glMatrixMode(GL_MODELVIEW); 1275 glLoadIdentity(); 1276 1277 // Never touch the framebuffer if we don't have any framebuffer layers 1278 if (hasHwcComposition) { 1279 // when using overlays, we assume a fully transparent framebuffer 1280 // NOTE: we could reduce how much we need to clear, for instance 1281 // remove where there are opaque FB layers. however, on some 1282 // GPUs doing a "clean slate" glClear might be more efficient. 1283 // We'll revisit later if needed. 1284 glClearColor(0, 0, 0, 0); 1285 glClear(GL_COLOR_BUFFER_BIT); 1286 } else { 1287 const Region region(hw->undefinedRegion.intersect(dirty)); 1288 // screen is already cleared here 1289 if (!region.isEmpty()) { 1290 // can happen with SurfaceView 1291 drawWormhole(hw, region); 1292 } 1293 } 1294 1295 /* 1296 * and then, render the layers targeted at the framebuffer 1297 */ 1298 1299 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1300 const size_t count = layers.size(); 1301 const Transform& tr = hw->getTransform(); 1302 for (size_t i=0 ; i<count ; ++i) { 1303 const sp<LayerBase>& layer(layers[i]); 1304 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1305 if (cur != end) { 1306 // we're using h/w composer 1307 if (!clip.isEmpty()) { 1308 if (cur->getCompositionType() == HWC_OVERLAY) { 1309 if (i && (cur->getHints() & HWC_HINT_CLEAR_FB) 1310 && layer->isOpaque()) { 1311 // never clear the very first layer since we're 1312 // guaranteed the FB is already cleared 1313 layer->clearWithOpenGL(hw, clip); 1314 } 1315 } else { 1316 layer->draw(hw, clip); 1317 } 1318 layer->setAcquireFence(hw, *cur); 1319 } 1320 ++cur; 1321 } else { 1322 // we're not using h/w composer 1323 if (!clip.isEmpty()) { 1324 layer->draw(hw, clip); 1325 } 1326 } 1327 } 1328 } 1329} 1330 1331void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1332 const Region& region) const 1333{ 1334 glDisable(GL_TEXTURE_EXTERNAL_OES); 1335 glDisable(GL_TEXTURE_2D); 1336 glDisable(GL_BLEND); 1337 glColor4f(0,0,0,0); 1338 1339 const int32_t height = hw->getHeight(); 1340 Region::const_iterator it = region.begin(); 1341 Region::const_iterator const end = region.end(); 1342 while (it != end) { 1343 const Rect& r = *it++; 1344 GLfloat vertices[][2] = { 1345 { r.left, height - r.top }, 1346 { r.left, height - r.bottom }, 1347 { r.right, height - r.bottom }, 1348 { r.right, height - r.top } 1349 }; 1350 glVertexPointer(2, GL_FLOAT, 0, vertices); 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.isValid()) { 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 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, w, h, flags, format); 1590 break; 1591 case ISurfaceComposerClient::eFXSurfaceBlur: 1592 case ISurfaceComposerClient::eFXSurfaceDim: 1593 layer = createDimLayer(client, w, h, flags); 1594 break; 1595 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1596 layer = createScreenshotLayer(client, 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, 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, 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, 1651 uint32_t w, uint32_t h, uint32_t flags) 1652{ 1653 sp<LayerDim> layer = new LayerDim(this, client); 1654 return layer; 1655} 1656 1657sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1658 const sp<Client>& client, 1659 uint32_t w, uint32_t h, uint32_t flags) 1660{ 1661 sp<LayerScreenshot> layer = new LayerScreenshot(this, 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::onInitializeDisplays() { 1714 // reset screen orientation 1715 Vector<ComposerState> state; 1716 Vector<DisplayState> displays; 1717 DisplayState d; 1718 d.what = DisplayState::eOrientationChanged; 1719 d.token = mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY]; 1720 d.orientation = DisplayState::eOrientationDefault; 1721 displays.add(d); 1722 setTransactionState(state, displays, 0); 1723 1724 // XXX: this should init default device to "unblank" and all other devices to "blank" 1725 onScreenAcquired(); 1726} 1727 1728void SurfaceFlinger::initializeDisplays() { 1729 class MessageScreenInitialized : public MessageBase { 1730 SurfaceFlinger* flinger; 1731 public: 1732 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 1733 virtual bool handler() { 1734 flinger->onInitializeDisplays(); 1735 return true; 1736 } 1737 }; 1738 sp<MessageBase> msg = new MessageScreenInitialized(this); 1739 postMessageAsync(msg); // we may be called from main thread, use async message 1740} 1741 1742 1743void SurfaceFlinger::onScreenAcquired() { 1744 ALOGD("Screen about to return, flinger = %p", this); 1745 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice 1746 getHwComposer().acquire(); 1747 hw->acquireScreen(); 1748 mEventThread->onScreenAcquired(); 1749 mVisibleRegionsDirty = true; 1750 repaintEverything(); 1751} 1752 1753void SurfaceFlinger::onScreenReleased() { 1754 ALOGD("About to give-up screen, flinger = %p", this); 1755 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice 1756 if (hw->isScreenAcquired()) { 1757 mEventThread->onScreenReleased(); 1758 hw->releaseScreen(); 1759 getHwComposer().release(); 1760 // from this point on, SF will stop drawing 1761 } 1762} 1763 1764void SurfaceFlinger::unblank() { 1765 class MessageScreenAcquired : public MessageBase { 1766 SurfaceFlinger* flinger; 1767 public: 1768 MessageScreenAcquired(SurfaceFlinger* flinger) : flinger(flinger) { } 1769 virtual bool handler() { 1770 flinger->onScreenAcquired(); 1771 return true; 1772 } 1773 }; 1774 sp<MessageBase> msg = new MessageScreenAcquired(this); 1775 postMessageSync(msg); 1776} 1777 1778void SurfaceFlinger::blank() { 1779 class MessageScreenReleased : public MessageBase { 1780 SurfaceFlinger* flinger; 1781 public: 1782 MessageScreenReleased(SurfaceFlinger* flinger) : flinger(flinger) { } 1783 virtual bool handler() { 1784 flinger->onScreenReleased(); 1785 return true; 1786 } 1787 }; 1788 sp<MessageBase> msg = new MessageScreenReleased(this); 1789 postMessageSync(msg); 1790} 1791 1792// --------------------------------------------------------------------------- 1793 1794status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1795{ 1796 const size_t SIZE = 4096; 1797 char buffer[SIZE]; 1798 String8 result; 1799 1800 if (!PermissionCache::checkCallingPermission(sDump)) { 1801 snprintf(buffer, SIZE, "Permission Denial: " 1802 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1803 IPCThreadState::self()->getCallingPid(), 1804 IPCThreadState::self()->getCallingUid()); 1805 result.append(buffer); 1806 } else { 1807 // Try to get the main lock, but don't insist if we can't 1808 // (this would indicate SF is stuck, but we want to be able to 1809 // print something in dumpsys). 1810 int retry = 3; 1811 while (mStateLock.tryLock()<0 && --retry>=0) { 1812 usleep(1000000); 1813 } 1814 const bool locked(retry >= 0); 1815 if (!locked) { 1816 snprintf(buffer, SIZE, 1817 "SurfaceFlinger appears to be unresponsive, " 1818 "dumping anyways (no locks held)\n"); 1819 result.append(buffer); 1820 } 1821 1822 bool dumpAll = true; 1823 size_t index = 0; 1824 size_t numArgs = args.size(); 1825 if (numArgs) { 1826 if ((index < numArgs) && 1827 (args[index] == String16("--list"))) { 1828 index++; 1829 listLayersLocked(args, index, result, buffer, SIZE); 1830 dumpAll = false; 1831 } 1832 1833 if ((index < numArgs) && 1834 (args[index] == String16("--latency"))) { 1835 index++; 1836 dumpStatsLocked(args, index, result, buffer, SIZE); 1837 dumpAll = false; 1838 } 1839 1840 if ((index < numArgs) && 1841 (args[index] == String16("--latency-clear"))) { 1842 index++; 1843 clearStatsLocked(args, index, result, buffer, SIZE); 1844 dumpAll = false; 1845 } 1846 } 1847 1848 if (dumpAll) { 1849 dumpAllLocked(result, buffer, SIZE); 1850 } 1851 1852 if (locked) { 1853 mStateLock.unlock(); 1854 } 1855 } 1856 write(fd, result.string(), result.size()); 1857 return NO_ERROR; 1858} 1859 1860void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 1861 String8& result, char* buffer, size_t SIZE) const 1862{ 1863 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1864 const size_t count = currentLayers.size(); 1865 for (size_t i=0 ; i<count ; i++) { 1866 const sp<LayerBase>& layer(currentLayers[i]); 1867 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1868 result.append(buffer); 1869 } 1870} 1871 1872void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 1873 String8& result, char* buffer, size_t SIZE) const 1874{ 1875 String8 name; 1876 if (index < args.size()) { 1877 name = String8(args[index]); 1878 index++; 1879 } 1880 1881 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1882 const size_t count = currentLayers.size(); 1883 for (size_t i=0 ; i<count ; i++) { 1884 const sp<LayerBase>& layer(currentLayers[i]); 1885 if (name.isEmpty()) { 1886 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1887 result.append(buffer); 1888 } 1889 if (name.isEmpty() || (name == layer->getName())) { 1890 layer->dumpStats(result, buffer, SIZE); 1891 } 1892 } 1893} 1894 1895void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 1896 String8& result, char* buffer, size_t SIZE) const 1897{ 1898 String8 name; 1899 if (index < args.size()) { 1900 name = String8(args[index]); 1901 index++; 1902 } 1903 1904 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1905 const size_t count = currentLayers.size(); 1906 for (size_t i=0 ; i<count ; i++) { 1907 const sp<LayerBase>& layer(currentLayers[i]); 1908 if (name.isEmpty() || (name == layer->getName())) { 1909 layer->clearStats(); 1910 } 1911 } 1912} 1913 1914void SurfaceFlinger::dumpAllLocked( 1915 String8& result, char* buffer, size_t SIZE) const 1916{ 1917 // figure out if we're stuck somewhere 1918 const nsecs_t now = systemTime(); 1919 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1920 const nsecs_t inTransaction(mDebugInTransaction); 1921 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1922 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1923 1924 /* 1925 * Dump the visible layer list 1926 */ 1927 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1928 const size_t count = currentLayers.size(); 1929 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1930 result.append(buffer); 1931 for (size_t i=0 ; i<count ; i++) { 1932 const sp<LayerBase>& layer(currentLayers[i]); 1933 layer->dump(result, buffer, SIZE); 1934 } 1935 1936 /* 1937 * Dump the layers in the purgatory 1938 */ 1939 1940 const size_t purgatorySize = mLayerPurgatory.size(); 1941 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1942 result.append(buffer); 1943 for (size_t i=0 ; i<purgatorySize ; i++) { 1944 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1945 layer->shortDump(result, buffer, SIZE); 1946 } 1947 1948 /* 1949 * Dump Display state 1950 */ 1951 1952 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1953 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 1954 snprintf(buffer, SIZE, 1955 "+ DisplayDevice[%u]\n" 1956 " id=%x, layerStack=%u, (%4dx%4d), orient=%2d, tr=%08x, " 1957 "flips=%u, secure=%d, numLayers=%u\n", 1958 dpy, 1959 hw->getDisplayType(), hw->getLayerStack(), 1960 hw->getWidth(), hw->getHeight(), 1961 hw->getOrientation(), hw->getTransform().getType(), 1962 hw->getPageFlipCount(), 1963 hw->getSecureLayerVisible(), 1964 hw->getVisibleLayersSortedByZ().size()); 1965 result.append(buffer); 1966 } 1967 1968 /* 1969 * Dump SurfaceFlinger global state 1970 */ 1971 1972 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1973 result.append(buffer); 1974 1975 HWComposer& hwc(getHwComposer()); 1976 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1977 const GLExtensions& extensions(GLExtensions::getInstance()); 1978 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1979 extensions.getVendor(), 1980 extensions.getRenderer(), 1981 extensions.getVersion()); 1982 result.append(buffer); 1983 1984 snprintf(buffer, SIZE, "EGL : %s\n", 1985 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 1986 result.append(buffer); 1987 1988 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1989 result.append(buffer); 1990 1991 hw->undefinedRegion.dump(result, "undefinedRegion"); 1992 snprintf(buffer, SIZE, 1993 " orientation=%d, canDraw=%d\n", 1994 hw->getOrientation(), hw->canDraw()); 1995 result.append(buffer); 1996 snprintf(buffer, SIZE, 1997 " last eglSwapBuffers() time: %f us\n" 1998 " last transaction time : %f us\n" 1999 " transaction-flags : %08x\n" 2000 " refresh-rate : %f fps\n" 2001 " x-dpi : %f\n" 2002 " y-dpi : %f\n", 2003 mLastSwapBufferTime/1000.0, 2004 mLastTransactionTime/1000.0, 2005 mTransactionFlags, 2006 1e9 / hwc.getRefreshPeriod(), 2007 hwc.getDpiX(), 2008 hwc.getDpiY()); 2009 result.append(buffer); 2010 2011 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2012 inSwapBuffersDuration/1000.0); 2013 result.append(buffer); 2014 2015 snprintf(buffer, SIZE, " transaction time: %f us\n", 2016 inTransactionDuration/1000.0); 2017 result.append(buffer); 2018 2019 /* 2020 * VSYNC state 2021 */ 2022 mEventThread->dump(result, buffer, SIZE); 2023 2024 /* 2025 * Dump HWComposer state 2026 */ 2027 snprintf(buffer, SIZE, "h/w composer state:\n"); 2028 result.append(buffer); 2029 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2030 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2031 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2032 result.append(buffer); 2033 hwc.dump(result, buffer, SIZE, hw->getVisibleLayersSortedByZ()); 2034 2035 /* 2036 * Dump gralloc state 2037 */ 2038 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2039 alloc.dump(result); 2040 hw->dump(result); 2041} 2042 2043status_t SurfaceFlinger::onTransact( 2044 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2045{ 2046 switch (code) { 2047 case CREATE_CONNECTION: 2048 case SET_TRANSACTION_STATE: 2049 case BOOT_FINISHED: 2050 case BLANK: 2051 case UNBLANK: 2052 { 2053 // codes that require permission check 2054 IPCThreadState* ipc = IPCThreadState::self(); 2055 const int pid = ipc->getCallingPid(); 2056 const int uid = ipc->getCallingUid(); 2057 if ((uid != AID_GRAPHICS) && 2058 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2059 ALOGE("Permission Denial: " 2060 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2061 return PERMISSION_DENIED; 2062 } 2063 break; 2064 } 2065 case CAPTURE_SCREEN: 2066 { 2067 // codes that require permission check 2068 IPCThreadState* ipc = IPCThreadState::self(); 2069 const int pid = ipc->getCallingPid(); 2070 const int uid = ipc->getCallingUid(); 2071 if ((uid != AID_GRAPHICS) && 2072 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2073 ALOGE("Permission Denial: " 2074 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2075 return PERMISSION_DENIED; 2076 } 2077 break; 2078 } 2079 } 2080 2081 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2082 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2083 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2084 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2085 IPCThreadState* ipc = IPCThreadState::self(); 2086 const int pid = ipc->getCallingPid(); 2087 const int uid = ipc->getCallingUid(); 2088 ALOGE("Permission Denial: " 2089 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2090 return PERMISSION_DENIED; 2091 } 2092 int n; 2093 switch (code) { 2094 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2095 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2096 return NO_ERROR; 2097 case 1002: // SHOW_UPDATES 2098 n = data.readInt32(); 2099 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2100 invalidateHwcGeometry(); 2101 repaintEverything(); 2102 return NO_ERROR; 2103 case 1004:{ // repaint everything 2104 repaintEverything(); 2105 return NO_ERROR; 2106 } 2107 case 1005:{ // force transaction 2108 setTransactionFlags( 2109 eTransactionNeeded| 2110 eDisplayTransactionNeeded| 2111 eTraversalNeeded); 2112 return NO_ERROR; 2113 } 2114 case 1006:{ // send empty update 2115 signalRefresh(); 2116 return NO_ERROR; 2117 } 2118 case 1008: // toggle use of hw composer 2119 n = data.readInt32(); 2120 mDebugDisableHWC = n ? 1 : 0; 2121 invalidateHwcGeometry(); 2122 repaintEverything(); 2123 return NO_ERROR; 2124 case 1009: // toggle use of transform hint 2125 n = data.readInt32(); 2126 mDebugDisableTransformHint = n ? 1 : 0; 2127 invalidateHwcGeometry(); 2128 repaintEverything(); 2129 return NO_ERROR; 2130 case 1010: // interrogate. 2131 reply->writeInt32(0); 2132 reply->writeInt32(0); 2133 reply->writeInt32(mDebugRegion); 2134 reply->writeInt32(0); 2135 reply->writeInt32(mDebugDisableHWC); 2136 return NO_ERROR; 2137 case 1013: { 2138 Mutex::Autolock _l(mStateLock); 2139 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2140 reply->writeInt32(hw->getPageFlipCount()); 2141 } 2142 return NO_ERROR; 2143 } 2144 } 2145 return err; 2146} 2147 2148void SurfaceFlinger::repaintEverything() { 2149 android_atomic_or(1, &mRepaintEverything); 2150 signalTransaction(); 2151} 2152 2153// --------------------------------------------------------------------------- 2154 2155status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack, 2156 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2157{ 2158 Mutex::Autolock _l(mStateLock); 2159 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut); 2160} 2161 2162status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack, 2163 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2164{ 2165 ATRACE_CALL(); 2166 2167 if (!GLExtensions::getInstance().haveFramebufferObject()) 2168 return INVALID_OPERATION; 2169 2170 // get screen geometry 2171 // FIXME: figure out what it means to have a screenshot texture w/ multi-display 2172 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2173 const uint32_t hw_w = hw->getWidth(); 2174 const uint32_t hw_h = hw->getHeight(); 2175 GLfloat u = 1; 2176 GLfloat v = 1; 2177 2178 // make sure to clear all GL error flags 2179 while ( glGetError() != GL_NO_ERROR ) ; 2180 2181 // create a FBO 2182 GLuint name, tname; 2183 glGenTextures(1, &tname); 2184 glBindTexture(GL_TEXTURE_2D, tname); 2185 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2186 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2187 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2188 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2189 if (glGetError() != GL_NO_ERROR) { 2190 while ( glGetError() != GL_NO_ERROR ) ; 2191 GLint tw = (2 << (31 - clz(hw_w))); 2192 GLint th = (2 << (31 - clz(hw_h))); 2193 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2194 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2195 u = GLfloat(hw_w) / tw; 2196 v = GLfloat(hw_h) / th; 2197 } 2198 glGenFramebuffersOES(1, &name); 2199 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2200 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2201 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2202 2203 // redraw the screen entirely... 2204 glDisable(GL_TEXTURE_EXTERNAL_OES); 2205 glDisable(GL_TEXTURE_2D); 2206 glClearColor(0,0,0,1); 2207 glClear(GL_COLOR_BUFFER_BIT); 2208 glMatrixMode(GL_MODELVIEW); 2209 glLoadIdentity(); 2210 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2211 const size_t count = layers.size(); 2212 for (size_t i=0 ; i<count ; ++i) { 2213 const sp<LayerBase>& layer(layers[i]); 2214 layer->draw(hw); 2215 } 2216 2217 hw->compositionComplete(); 2218 2219 // back to main framebuffer 2220 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2221 glDeleteFramebuffersOES(1, &name); 2222 2223 *textureName = tname; 2224 *uOut = u; 2225 *vOut = v; 2226 return NO_ERROR; 2227} 2228 2229// --------------------------------------------------------------------------- 2230 2231status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display, 2232 sp<IMemoryHeap>* heap, 2233 uint32_t* w, uint32_t* h, PixelFormat* f, 2234 uint32_t sw, uint32_t sh, 2235 uint32_t minLayerZ, uint32_t maxLayerZ) 2236{ 2237 ATRACE_CALL(); 2238 2239 status_t result = PERMISSION_DENIED; 2240 2241 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2242 return INVALID_OPERATION; 2243 } 2244 2245 // get screen geometry 2246 sp<const DisplayDevice> hw(getDisplayDevice(display)); 2247 const uint32_t hw_w = hw->getWidth(); 2248 const uint32_t hw_h = hw->getHeight(); 2249 2250 // if we have secure windows on this display, never allow the screen capture 2251 if (hw->getSecureLayerVisible()) { 2252 ALOGW("FB is protected: PERMISSION_DENIED"); 2253 return PERMISSION_DENIED; 2254 } 2255 2256 if ((sw > hw_w) || (sh > hw_h)) { 2257 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2258 return BAD_VALUE; 2259 } 2260 2261 sw = (!sw) ? hw_w : sw; 2262 sh = (!sh) ? hw_h : sh; 2263 const size_t size = sw * sh * 4; 2264 const bool filtering = sw != hw_w || sh != hw_h; 2265 2266// ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2267// sw, sh, minLayerZ, maxLayerZ); 2268 2269 // make sure to clear all GL error flags 2270 while ( glGetError() != GL_NO_ERROR ) ; 2271 2272 // create a FBO 2273 GLuint name, tname; 2274 glGenRenderbuffersOES(1, &tname); 2275 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2276 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2277 2278 glGenFramebuffersOES(1, &name); 2279 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2280 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2281 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2282 2283 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2284 2285 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2286 2287 // invert everything, b/c glReadPixel() below will invert the FB 2288 glViewport(0, 0, sw, sh); 2289 glMatrixMode(GL_PROJECTION); 2290 glPushMatrix(); 2291 glLoadIdentity(); 2292 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2293 glMatrixMode(GL_MODELVIEW); 2294 2295 // redraw the screen entirely... 2296 glClearColor(0,0,0,1); 2297 glClear(GL_COLOR_BUFFER_BIT); 2298 2299 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2300 const size_t count = layers.size(); 2301 for (size_t i=0 ; i<count ; ++i) { 2302 const sp<LayerBase>& layer(layers[i]); 2303 const uint32_t z = layer->drawingState().z; 2304 if (z >= minLayerZ && z <= maxLayerZ) { 2305 if (filtering) layer->setFiltering(true); 2306 layer->draw(hw); 2307 if (filtering) layer->setFiltering(false); 2308 } 2309 } 2310 2311 // check for errors and return screen capture 2312 if (glGetError() != GL_NO_ERROR) { 2313 // error while rendering 2314 result = INVALID_OPERATION; 2315 } else { 2316 // allocate shared memory large enough to hold the 2317 // screen capture 2318 sp<MemoryHeapBase> base( 2319 new MemoryHeapBase(size, 0, "screen-capture") ); 2320 void* const ptr = base->getBase(); 2321 if (ptr) { 2322 // capture the screen with glReadPixels() 2323 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2324 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2325 if (glGetError() == GL_NO_ERROR) { 2326 *heap = base; 2327 *w = sw; 2328 *h = sh; 2329 *f = PIXEL_FORMAT_RGBA_8888; 2330 result = NO_ERROR; 2331 } 2332 } else { 2333 result = NO_MEMORY; 2334 } 2335 } 2336 glViewport(0, 0, hw_w, hw_h); 2337 glMatrixMode(GL_PROJECTION); 2338 glPopMatrix(); 2339 glMatrixMode(GL_MODELVIEW); 2340 } else { 2341 result = BAD_VALUE; 2342 } 2343 2344 // release FBO resources 2345 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2346 glDeleteRenderbuffersOES(1, &tname); 2347 glDeleteFramebuffersOES(1, &name); 2348 2349 hw->compositionComplete(); 2350 2351// ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2352 2353 return result; 2354} 2355 2356 2357status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2358 sp<IMemoryHeap>* heap, 2359 uint32_t* width, uint32_t* height, PixelFormat* format, 2360 uint32_t sw, uint32_t sh, 2361 uint32_t minLayerZ, uint32_t maxLayerZ) 2362{ 2363 if (CC_UNLIKELY(display == 0)) 2364 return BAD_VALUE; 2365 2366 if (!GLExtensions::getInstance().haveFramebufferObject()) 2367 return INVALID_OPERATION; 2368 2369 class MessageCaptureScreen : public MessageBase { 2370 SurfaceFlinger* flinger; 2371 sp<IBinder> display; 2372 sp<IMemoryHeap>* heap; 2373 uint32_t* w; 2374 uint32_t* h; 2375 PixelFormat* f; 2376 uint32_t sw; 2377 uint32_t sh; 2378 uint32_t minLayerZ; 2379 uint32_t maxLayerZ; 2380 status_t result; 2381 public: 2382 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display, 2383 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2384 uint32_t sw, uint32_t sh, 2385 uint32_t minLayerZ, uint32_t maxLayerZ) 2386 : flinger(flinger), display(display), 2387 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2388 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2389 result(PERMISSION_DENIED) 2390 { 2391 } 2392 status_t getResult() const { 2393 return result; 2394 } 2395 virtual bool handler() { 2396 Mutex::Autolock _l(flinger->mStateLock); 2397 result = flinger->captureScreenImplLocked(display, 2398 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2399 return true; 2400 } 2401 }; 2402 2403 sp<MessageBase> msg = new MessageCaptureScreen(this, 2404 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2405 status_t res = postMessageSync(msg); 2406 if (res == NO_ERROR) { 2407 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2408 } 2409 return res; 2410} 2411 2412// --------------------------------------------------------------------------- 2413 2414SurfaceFlinger::LayerVector::LayerVector() { 2415} 2416 2417SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2418 : SortedVector<sp<LayerBase> >(rhs) { 2419} 2420 2421int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2422 const void* rhs) const 2423{ 2424 // sort layers per layer-stack, then by z-order and finally by sequence 2425 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2426 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2427 2428 uint32_t ls = l->currentState().layerStack; 2429 uint32_t rs = r->currentState().layerStack; 2430 if (ls != rs) 2431 return ls - rs; 2432 2433 uint32_t lz = l->currentState().z; 2434 uint32_t rz = r->currentState().z; 2435 if (lz != rz) 2436 return lz - rz; 2437 2438 return l->sequence - r->sequence; 2439} 2440 2441// --------------------------------------------------------------------------- 2442 2443SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2444 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2445} 2446 2447SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2448 : type(type), layerStack(0), orientation(0) { 2449} 2450 2451// --------------------------------------------------------------------------- 2452 2453GraphicBufferAlloc::GraphicBufferAlloc() {} 2454 2455GraphicBufferAlloc::~GraphicBufferAlloc() {} 2456 2457sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2458 PixelFormat format, uint32_t usage, status_t* error) { 2459 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2460 status_t err = graphicBuffer->initCheck(); 2461 *error = err; 2462 if (err != 0 || graphicBuffer->handle == 0) { 2463 if (err == NO_MEMORY) { 2464 GraphicBuffer::dumpAllocationsToSystemLog(); 2465 } 2466 ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2467 "failed (%s), handle=%p", 2468 w, h, strerror(-err), graphicBuffer->handle); 2469 return 0; 2470 } 2471 return graphicBuffer; 2472} 2473 2474// --------------------------------------------------------------------------- 2475 2476}; // namespace android 2477