SurfaceFlinger.cpp revision 1d12d8a8e61163b35cf42c51c558a67138014e82
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#include <dlfcn.h> 24 25#include <EGL/egl.h> 26#include <GLES/gl.h> 27 28#include <cutils/log.h> 29#include <cutils/properties.h> 30 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryHeapBase.h> 34#include <binder/PermissionCache.h> 35 36#include <ui/DisplayInfo.h> 37 38#include <gui/BitTube.h> 39#include <gui/BufferQueue.h> 40#include <gui/IDisplayEventConnection.h> 41#include <gui/SurfaceTextureClient.h> 42 43#include <ui/GraphicBufferAllocator.h> 44#include <ui/PixelFormat.h> 45 46#include <utils/misc.h> 47#include <utils/String8.h> 48#include <utils/String16.h> 49#include <utils/StopWatch.h> 50#include <utils/Trace.h> 51 52#include <private/android_filesystem_config.h> 53 54#include "clz.h" 55#include "DdmConnection.h" 56#include "DisplayDevice.h" 57#include "Client.h" 58#include "EventThread.h" 59#include "GLExtensions.h" 60#include "Layer.h" 61#include "LayerDim.h" 62#include "LayerScreenshot.h" 63#include "SurfaceFlinger.h" 64 65#include "DisplayHardware/FramebufferSurface.h" 66#include "DisplayHardware/HWComposer.h" 67 68 69#define EGL_VERSION_HW_ANDROID 0x3143 70 71#define DISPLAY_COUNT 1 72 73namespace android { 74// --------------------------------------------------------------------------- 75 76const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 77const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 78const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 79const String16 sDump("android.permission.DUMP"); 80 81// --------------------------------------------------------------------------- 82 83SurfaceFlinger::SurfaceFlinger() 84 : BnSurfaceComposer(), Thread(false), 85 mTransactionFlags(0), 86 mTransationPending(false), 87 mLayersRemoved(false), 88 mRepaintEverything(0), 89 mBootTime(systemTime()), 90 mVisibleRegionsDirty(false), 91 mHwWorkListDirty(false), 92 mDebugRegion(0), 93 mDebugDDMS(0), 94 mDebugDisableHWC(0), 95 mDebugDisableTransformHint(0), 96 mDebugInSwapBuffers(0), 97 mLastSwapBufferTime(0), 98 mDebugInTransaction(0), 99 mLastTransactionTime(0), 100 mBootFinished(false) 101{ 102 ALOGI("SurfaceFlinger is starting"); 103 104 // debugging stuff... 105 char value[PROPERTY_VALUE_MAX]; 106 107 property_get("debug.sf.showupdates", value, "0"); 108 mDebugRegion = atoi(value); 109 110 property_get("debug.sf.ddms", value, "0"); 111 mDebugDDMS = atoi(value); 112 if (mDebugDDMS) { 113 if (!startDdmConnection()) { 114 // start failed, and DDMS debugging not enabled 115 mDebugDDMS = 0; 116 } 117 } 118 ALOGI_IF(mDebugRegion, "showupdates enabled"); 119 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 120} 121 122void SurfaceFlinger::onFirstRef() 123{ 124 mEventQueue.init(this); 125 126 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 127 128 // Wait for the main thread to be done with its initialization 129 mReadyToRunBarrier.wait(); 130} 131 132 133SurfaceFlinger::~SurfaceFlinger() 134{ 135 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 136 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 137 eglTerminate(display); 138} 139 140void SurfaceFlinger::binderDied(const wp<IBinder>& who) 141{ 142 // the window manager died on us. prepare its eulogy. 143 144 // restore initial conditions (default device unblank, etc) 145 initializeDisplays(); 146 147 // restart the boot-animation 148 startBootAnim(); 149} 150 151sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 152{ 153 sp<ISurfaceComposerClient> bclient; 154 sp<Client> client(new Client(this)); 155 status_t err = client->initCheck(); 156 if (err == NO_ERROR) { 157 bclient = client; 158 } 159 return bclient; 160} 161 162sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName) 163{ 164 class DisplayToken : public BBinder { 165 sp<SurfaceFlinger> flinger; 166 virtual ~DisplayToken() { 167 // no more references, this display must be terminated 168 Mutex::Autolock _l(flinger->mStateLock); 169 flinger->mCurrentState.displays.removeItem(this); 170 flinger->setTransactionFlags(eDisplayTransactionNeeded); 171 } 172 public: 173 DisplayToken(const sp<SurfaceFlinger>& flinger) 174 : flinger(flinger) { 175 } 176 }; 177 178 sp<BBinder> token = new DisplayToken(this); 179 180 Mutex::Autolock _l(mStateLock); 181 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 182 info.displayName = displayName; 183 mCurrentState.displays.add(token, info); 184 185 return token; 186} 187 188sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 189 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 190 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 191 return NULL; 192 } 193 return mDefaultDisplays[id]; 194} 195 196sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 197{ 198 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 199 return gba; 200} 201 202void SurfaceFlinger::bootFinished() 203{ 204 const nsecs_t now = systemTime(); 205 const nsecs_t duration = now - mBootTime; 206 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 207 mBootFinished = true; 208 209 // wait patiently for the window manager death 210 const String16 name("window"); 211 sp<IBinder> window(defaultServiceManager()->getService(name)); 212 if (window != 0) { 213 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 214 } 215 216 // stop boot animation 217 // formerly we would just kill the process, but we now ask it to exit so it 218 // can choose where to stop the animation. 219 property_set("service.bootanim.exit", "1"); 220} 221 222void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 223 class MessageDestroyGLTexture : public MessageBase { 224 GLuint texture; 225 public: 226 MessageDestroyGLTexture(GLuint texture) 227 : texture(texture) { 228 } 229 virtual bool handler() { 230 glDeleteTextures(1, &texture); 231 return true; 232 } 233 }; 234 postMessageAsync(new MessageDestroyGLTexture(texture)); 235} 236 237status_t SurfaceFlinger::selectConfigForPixelFormat( 238 EGLDisplay dpy, 239 EGLint const* attrs, 240 PixelFormat format, 241 EGLConfig* outConfig) 242{ 243 EGLConfig config = NULL; 244 EGLint numConfigs = -1, n=0; 245 eglGetConfigs(dpy, NULL, 0, &numConfigs); 246 EGLConfig* const configs = new EGLConfig[numConfigs]; 247 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 248 249 for (int i=0 ; i<n ; i++) { 250 EGLint nativeVisualId = 0; 251 eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId); 252 if (nativeVisualId>0 && format == nativeVisualId) { 253 *outConfig = configs[i]; 254 delete [] configs; 255 return NO_ERROR; 256 } 257 } 258 delete [] configs; 259 return NAME_NOT_FOUND; 260} 261 262EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 263 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 264 // it is to be used with WIFI displays 265 EGLConfig config; 266 EGLint dummy; 267 status_t err; 268 269 EGLint attribs[] = { 270 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 271 EGL_RED_SIZE, 8, 272 EGL_GREEN_SIZE, 8, 273 EGL_BLUE_SIZE, 8, 274 // EGL_RECORDABLE_ANDROID must be last so that we can retry 275 // without it easily (see below) 276 EGL_RECORDABLE_ANDROID, EGL_TRUE, 277 EGL_NONE 278 }; 279 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 280 if (err) { 281 // maybe we failed because of EGL_RECORDABLE_ANDROID 282 ALOGW("couldn't find an EGLConfig with EGL_RECORDABLE_ANDROID"); 283 attribs[NELEM(attribs) - 3] = EGL_NONE; 284 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 285 } 286 ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format"); 287 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) { 288 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 289 } 290 return config; 291} 292 293EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 294 // Also create our EGLContext 295 EGLint contextAttributes[] = { 296#ifdef EGL_IMG_context_priority 297#ifdef HAS_CONTEXT_PRIORITY 298#warning "using EGL_IMG_context_priority" 299 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 300#endif 301#endif 302 EGL_NONE, EGL_NONE 303 }; 304 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 305 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 306 return ctxt; 307} 308 309void SurfaceFlinger::initializeGL(EGLDisplay display) { 310 GLExtensions& extensions(GLExtensions::getInstance()); 311 extensions.initWithGLStrings( 312 glGetString(GL_VENDOR), 313 glGetString(GL_RENDERER), 314 glGetString(GL_VERSION), 315 glGetString(GL_EXTENSIONS), 316 eglQueryString(display, EGL_VENDOR), 317 eglQueryString(display, EGL_VERSION), 318 eglQueryString(display, EGL_EXTENSIONS)); 319 320 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 321 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 322 323 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 324 glPixelStorei(GL_PACK_ALIGNMENT, 4); 325 glEnableClientState(GL_VERTEX_ARRAY); 326 glShadeModel(GL_FLAT); 327 glDisable(GL_DITHER); 328 glDisable(GL_CULL_FACE); 329 330 struct pack565 { 331 inline uint16_t operator() (int r, int g, int b) const { 332 return (r<<11)|(g<<5)|b; 333 } 334 } pack565; 335 336 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 337 glGenTextures(1, &mProtectedTexName); 338 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 339 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 340 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 341 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 342 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 343 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 344 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 345 346 // print some debugging info 347 EGLint r,g,b,a; 348 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 349 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 350 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 351 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 352 ALOGI("EGL informations:"); 353 ALOGI("vendor : %s", extensions.getEglVendor()); 354 ALOGI("version : %s", extensions.getEglVersion()); 355 ALOGI("extensions: %s", extensions.getEglExtension()); 356 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 357 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 358 ALOGI("OpenGL ES informations:"); 359 ALOGI("vendor : %s", extensions.getVendor()); 360 ALOGI("renderer : %s", extensions.getRenderer()); 361 ALOGI("version : %s", extensions.getVersion()); 362 ALOGI("extensions: %s", extensions.getExtension()); 363 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 364 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 365} 366 367status_t SurfaceFlinger::readyToRun() 368{ 369 ALOGI( "SurfaceFlinger's main thread ready to run. " 370 "Initializing graphics H/W..."); 371 372 // initialize EGL for the default display 373 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 374 eglInitialize(mEGLDisplay, NULL, NULL); 375 376 // Initialize the H/W composer object. There may or may not be an 377 // actual hardware composer underneath. 378 mHwc = new HWComposer(this, 379 *static_cast<HWComposer::EventHandler *>(this)); 380 381 // initialize the config and context 382 EGLint format = mHwc->getVisualID(); 383 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 384 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 385 386 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 387 "couldn't create EGLContext"); 388 389 // initialize our non-virtual displays 390 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 391 mDefaultDisplays[i] = new BBinder(); 392 mCurrentState.displays.add(mDefaultDisplays[i], 393 DisplayDeviceState(DisplayDevice::DisplayType(i))); 394 } 395 396 // The main display is a bit special and always exists 397 // 398 // if we didn't add it here, it would be added automatically during the 399 // first transaction, however this would also create some difficulties: 400 // 401 // - there would be a race where a client could call getDisplayInfo(), 402 // for instance before the DisplayDevice is created. 403 // 404 // - we need a GL context current in a few places, when initializing 405 // OpenGL ES (see below), or creating a layer, 406 // or when a texture is (asynchronously) destroyed, and for that 407 // we need a valid surface, so it's conveniant to use the main display 408 // for that. 409 410 sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc); 411 sp<SurfaceTextureClient> stc = new SurfaceTextureClient( 412 static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue())); 413 sp<DisplayDevice> hw = new DisplayDevice(this, 414 DisplayDevice::DISPLAY_PRIMARY, 415 mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY], 416 stc, fbs, mEGLConfig); 417 mDisplays.add(mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY], hw); 418 419 420 // initialize OpenGL ES 421 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 422 initializeGL(mEGLDisplay); 423 424 // start the EventThread 425 mEventThread = new EventThread(this); 426 mEventQueue.setEventThread(mEventThread); 427 428 // initialize our drawing state 429 mDrawingState = mCurrentState; 430 431 432 // We're now ready to accept clients... 433 mReadyToRunBarrier.open(); 434 435 // set initial conditions (e.g. unblank default device) 436 initializeDisplays(); 437 438 // start boot animation 439 startBootAnim(); 440 441 return NO_ERROR; 442} 443 444int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 445 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 446 type : mHwc->allocateDisplayId(); 447} 448 449void SurfaceFlinger::startBootAnim() { 450 // start boot animation 451 property_set("service.bootanim.exit", "0"); 452 property_set("ctl.start", "bootanim"); 453} 454 455uint32_t SurfaceFlinger::getMaxTextureSize() const { 456 return mMaxTextureSize; 457} 458 459uint32_t SurfaceFlinger::getMaxViewportDims() const { 460 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 461 mMaxViewportDims[0] : mMaxViewportDims[1]; 462} 463 464// ---------------------------------------------------------------------------- 465 466bool SurfaceFlinger::authenticateSurfaceTexture( 467 const sp<ISurfaceTexture>& surfaceTexture) const { 468 Mutex::Autolock _l(mStateLock); 469 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 470 471 // Check the visible layer list for the ISurface 472 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 473 size_t count = currentLayers.size(); 474 for (size_t i=0 ; i<count ; i++) { 475 const sp<LayerBase>& layer(currentLayers[i]); 476 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 477 if (lbc != NULL) { 478 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 479 if (lbcBinder == surfaceTextureBinder) { 480 return true; 481 } 482 } 483 } 484 485 // Check the layers in the purgatory. This check is here so that if a 486 // SurfaceTexture gets destroyed before all the clients are done using it, 487 // the error will not be reported as "surface XYZ is not authenticated", but 488 // will instead fail later on when the client tries to use the surface, 489 // which should be reported as "surface XYZ returned an -ENODEV". The 490 // purgatorized layers are no less authentic than the visible ones, so this 491 // should not cause any harm. 492 size_t purgatorySize = mLayerPurgatory.size(); 493 for (size_t i=0 ; i<purgatorySize ; i++) { 494 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 495 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 496 if (lbc != NULL) { 497 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 498 if (lbcBinder == surfaceTextureBinder) { 499 return true; 500 } 501 } 502 } 503 504 return false; 505} 506 507status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 508 // TODO: this is mostly here only for compatibility 509 // the display size is needed but the display metrics should come from elsewhere 510 if (display != mDefaultDisplays[ISurfaceComposer::eDisplayIdMain]) { 511 // TODO: additional displays not yet supported 512 return BAD_INDEX; 513 } 514 515 const HWComposer& hwc(getHwComposer()); 516 float xdpi = hwc.getDpiX(HWC_DISPLAY_PRIMARY); 517 float ydpi = hwc.getDpiY(HWC_DISPLAY_PRIMARY); 518 519 // TODO: Not sure if display density should handled by SF any longer 520 class Density { 521 static int getDensityFromProperty(char const* propName) { 522 char property[PROPERTY_VALUE_MAX]; 523 int density = 0; 524 if (property_get(propName, property, NULL) > 0) { 525 density = atoi(property); 526 } 527 return density; 528 } 529 public: 530 static int getEmuDensity() { 531 return getDensityFromProperty("qemu.sf.lcd_density"); } 532 static int getBuildDensity() { 533 return getDensityFromProperty("ro.sf.lcd_density"); } 534 }; 535 // The density of the device is provided by a build property 536 float density = Density::getBuildDensity() / 160.0f; 537 if (density == 0) { 538 // the build doesn't provide a density -- this is wrong! 539 // use xdpi instead 540 ALOGE("ro.sf.lcd_density must be defined as a build property"); 541 density = xdpi / 160.0f; 542 } 543 if (Density::getEmuDensity()) { 544 // if "qemu.sf.lcd_density" is specified, it overrides everything 545 xdpi = ydpi = density = Density::getEmuDensity(); 546 density /= 160.0f; 547 } 548 549 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 550 info->w = hw->getWidth(); 551 info->h = hw->getHeight(); 552 info->xdpi = xdpi; 553 info->ydpi = ydpi; 554 info->fps = float(1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY)); 555 info->density = density; 556 info->orientation = hw->getOrientation(); 557 // TODO: this needs to go away (currently needed only by webkit) 558 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 559 return NO_ERROR; 560} 561 562// ---------------------------------------------------------------------------- 563 564sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 565 return mEventThread->createEventConnection(); 566} 567 568void SurfaceFlinger::connectDisplay(const sp<ISurfaceTexture>& surface) { 569 570 sp<IBinder> token; 571 { // scope for the lock 572 Mutex::Autolock _l(mStateLock); 573 token = mExtDisplayToken; 574 } 575 576 if (token == 0) { 577 token = createDisplay(String8("Display from connectDisplay")); 578 } 579 580 { // scope for the lock 581 Mutex::Autolock _l(mStateLock); 582 if (surface == 0) { 583 // release our current display. we're guarantee to have 584 // a reference to it (token), while we hold the lock 585 mExtDisplayToken = 0; 586 } else { 587 mExtDisplayToken = token; 588 } 589 590 DisplayDeviceState& info(mCurrentState.displays.editValueFor(token)); 591 info.surface = surface; 592 setTransactionFlags(eDisplayTransactionNeeded); 593 } 594} 595 596// ---------------------------------------------------------------------------- 597 598void SurfaceFlinger::waitForEvent() { 599 mEventQueue.waitMessage(); 600} 601 602void SurfaceFlinger::signalTransaction() { 603 mEventQueue.invalidate(); 604} 605 606void SurfaceFlinger::signalLayerUpdate() { 607 mEventQueue.invalidate(); 608} 609 610void SurfaceFlinger::signalRefresh() { 611 mEventQueue.refresh(); 612} 613 614status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 615 nsecs_t reltime, uint32_t flags) { 616 return mEventQueue.postMessage(msg, reltime); 617} 618 619status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 620 nsecs_t reltime, uint32_t flags) { 621 status_t res = mEventQueue.postMessage(msg, reltime); 622 if (res == NO_ERROR) { 623 msg->wait(); 624 } 625 return res; 626} 627 628bool SurfaceFlinger::threadLoop() { 629 waitForEvent(); 630 return true; 631} 632 633void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 634 if (mEventThread == NULL) { 635 // This is a temporary workaround for b/7145521. A non-null pointer 636 // does not mean EventThread has finished initializing, so this 637 // is not a correct fix. 638 ALOGW("WARNING: EventThread not started, ignoring vsync"); 639 return; 640 } 641 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 642 // we should only receive DisplayDevice::DisplayType from the vsync callback 643 const wp<IBinder>& token(mDefaultDisplays[type]); 644 mEventThread->onVSyncReceived(token, timestamp); 645 } 646} 647 648void SurfaceFlinger::eventControl(int event, int enabled) { 649 getHwComposer().eventControl(event, enabled); 650} 651 652void SurfaceFlinger::onMessageReceived(int32_t what) { 653 ATRACE_CALL(); 654 switch (what) { 655 case MessageQueue::INVALIDATE: 656 handleMessageTransaction(); 657 handleMessageInvalidate(); 658 signalRefresh(); 659 break; 660 case MessageQueue::REFRESH: 661 handleMessageRefresh(); 662 break; 663 } 664} 665 666void SurfaceFlinger::handleMessageTransaction() { 667 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 668 if (transactionFlags) { 669 handleTransaction(transactionFlags); 670 } 671} 672 673void SurfaceFlinger::handleMessageInvalidate() { 674 ATRACE_CALL(); 675 handlePageFlip(); 676} 677 678void SurfaceFlinger::handleMessageRefresh() { 679 ATRACE_CALL(); 680 preComposition(); 681 rebuildLayerStacks(); 682 setUpHWComposer(); 683 doDebugFlashRegions(); 684 doComposition(); 685 postComposition(); 686} 687 688void SurfaceFlinger::doDebugFlashRegions() 689{ 690 // is debugging enabled 691 if (CC_LIKELY(!mDebugRegion)) 692 return; 693 694 const bool repaintEverything = mRepaintEverything; 695 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 696 const sp<DisplayDevice>& hw(mDisplays[dpy]); 697 if (hw->canDraw()) { 698 // transform the dirty region into this screen's coordinate space 699 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 700 if (!dirtyRegion.isEmpty()) { 701 // redraw the whole screen 702 doComposeSurfaces(hw, Region(hw->bounds())); 703 704 // and draw the dirty region 705 glDisable(GL_TEXTURE_EXTERNAL_OES); 706 glDisable(GL_TEXTURE_2D); 707 glDisable(GL_BLEND); 708 glColor4f(1, 0, 1, 1); 709 const int32_t height = hw->getHeight(); 710 Region::const_iterator it = dirtyRegion.begin(); 711 Region::const_iterator const end = dirtyRegion.end(); 712 while (it != end) { 713 const Rect& r = *it++; 714 GLfloat vertices[][2] = { 715 { r.left, height - r.top }, 716 { r.left, height - r.bottom }, 717 { r.right, height - r.bottom }, 718 { r.right, height - r.top } 719 }; 720 glVertexPointer(2, GL_FLOAT, 0, vertices); 721 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 722 } 723 hw->compositionComplete(); 724 hw->swapBuffers(getHwComposer()); 725 } 726 } 727 } 728 729 postFramebuffer(); 730 731 if (mDebugRegion > 1) { 732 usleep(mDebugRegion * 1000); 733 } 734} 735 736void SurfaceFlinger::preComposition() 737{ 738 bool needExtraInvalidate = false; 739 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 740 const size_t count = currentLayers.size(); 741 for (size_t i=0 ; i<count ; i++) { 742 if (currentLayers[i]->onPreComposition()) { 743 needExtraInvalidate = true; 744 } 745 } 746 if (needExtraInvalidate) { 747 signalLayerUpdate(); 748 } 749} 750 751void SurfaceFlinger::postComposition() 752{ 753 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 754 const size_t count = currentLayers.size(); 755 for (size_t i=0 ; i<count ; i++) { 756 currentLayers[i]->onPostComposition(); 757 } 758} 759 760void SurfaceFlinger::rebuildLayerStacks() { 761 // rebuild the visible layer list per screen 762 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 763 ATRACE_CALL(); 764 mVisibleRegionsDirty = false; 765 invalidateHwcGeometry(); 766 767 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 768 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 769 Region opaqueRegion; 770 Region dirtyRegion; 771 Vector< sp<LayerBase> > layersSortedByZ; 772 const sp<DisplayDevice>& hw(mDisplays[dpy]); 773 const Transform& tr(hw->getTransform()); 774 const Rect bounds(hw->getBounds()); 775 if (hw->canDraw()) { 776 SurfaceFlinger::computeVisibleRegions(currentLayers, 777 hw->getLayerStack(), dirtyRegion, opaqueRegion); 778 779 const size_t count = currentLayers.size(); 780 for (size_t i=0 ; i<count ; i++) { 781 const sp<LayerBase>& layer(currentLayers[i]); 782 const Layer::State& s(layer->drawingState()); 783 if (s.layerStack == hw->getLayerStack()) { 784 Region visibleRegion(tr.transform(layer->visibleRegion)); 785 visibleRegion.andSelf(bounds); 786 if (!visibleRegion.isEmpty()) { 787 layersSortedByZ.add(layer); 788 } 789 } 790 } 791 } 792 hw->setVisibleLayersSortedByZ(layersSortedByZ); 793 hw->undefinedRegion.set(bounds); 794 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 795 hw->dirtyRegion.orSelf(dirtyRegion); 796 } 797 } 798} 799 800void SurfaceFlinger::setUpHWComposer() { 801 HWComposer& hwc(getHwComposer()); 802 if (hwc.initCheck() == NO_ERROR) { 803 // build the h/w work list 804 const bool workListsDirty = mHwWorkListDirty; 805 mHwWorkListDirty = false; 806 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 807 sp<const DisplayDevice> hw(mDisplays[dpy]); 808 const int32_t id = hw->getHwcDisplayId(); 809 if (id >= 0) { 810 const Vector< sp<LayerBase> >& currentLayers( 811 hw->getVisibleLayersSortedByZ()); 812 const size_t count = currentLayers.size(); 813 if (hwc.createWorkList(id, count) >= 0) { 814 HWComposer::LayerListIterator cur = hwc.begin(id); 815 const HWComposer::LayerListIterator end = hwc.end(id); 816 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 817 const sp<LayerBase>& layer(currentLayers[i]); 818 819 if (CC_UNLIKELY(workListsDirty)) { 820 layer->setGeometry(hw, *cur); 821 if (mDebugDisableHWC || mDebugRegion) { 822 cur->setSkip(true); 823 } 824 } 825 826 /* 827 * update the per-frame h/w composer data for each layer 828 * and build the transparent region of the FB 829 */ 830 layer->setPerFrameData(hw, *cur); 831 } 832 } 833 } 834 } 835 status_t err = hwc.prepare(); 836 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 837 } 838} 839 840void SurfaceFlinger::doComposition() { 841 ATRACE_CALL(); 842 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 843 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 844 const sp<DisplayDevice>& hw(mDisplays[dpy]); 845 if (hw->canDraw()) { 846 // transform the dirty region into this screen's coordinate space 847 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 848 if (!dirtyRegion.isEmpty()) { 849 // repaint the framebuffer (if needed) 850 doDisplayComposition(hw, dirtyRegion); 851 } 852 hw->dirtyRegion.clear(); 853 hw->flip(hw->swapRegion); 854 hw->swapRegion.clear(); 855 } 856 // inform the h/w that we're done compositing 857 hw->compositionComplete(); 858 } 859 postFramebuffer(); 860} 861 862void SurfaceFlinger::postFramebuffer() 863{ 864 ATRACE_CALL(); 865 866 const nsecs_t now = systemTime(); 867 mDebugInSwapBuffers = now; 868 869 HWComposer& hwc(getHwComposer()); 870 if (hwc.initCheck() == NO_ERROR) { 871 // FIXME: EGL spec says: 872 // "surface must be bound to the calling thread's current context, 873 // for the current rendering API." 874 DisplayDevice::makeCurrent(mEGLDisplay, getDefaultDisplayDevice(), mEGLContext); 875 hwc.commit(); 876 } 877 878 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 879 sp<const DisplayDevice> hw(mDisplays[dpy]); 880 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 881 hw->onSwapBuffersCompleted(hwc); 882 const size_t count = currentLayers.size(); 883 int32_t id = hw->getHwcDisplayId(); 884 if (id >=0 && hwc.initCheck() == NO_ERROR) { 885 HWComposer::LayerListIterator cur = hwc.begin(id); 886 const HWComposer::LayerListIterator end = hwc.end(id); 887 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 888 currentLayers[i]->onLayerDisplayed(hw, &*cur); 889 } 890 } else { 891 for (size_t i = 0; i < count; i++) { 892 currentLayers[i]->onLayerDisplayed(hw, NULL); 893 } 894 } 895 } 896 897 mLastSwapBufferTime = systemTime() - now; 898 mDebugInSwapBuffers = 0; 899} 900 901void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 902{ 903 ATRACE_CALL(); 904 905 Mutex::Autolock _l(mStateLock); 906 const nsecs_t now = systemTime(); 907 mDebugInTransaction = now; 908 909 // Here we're guaranteed that some transaction flags are set 910 // so we can call handleTransactionLocked() unconditionally. 911 // We call getTransactionFlags(), which will also clear the flags, 912 // with mStateLock held to guarantee that mCurrentState won't change 913 // until the transaction is committed. 914 915 transactionFlags = getTransactionFlags(eTransactionMask); 916 handleTransactionLocked(transactionFlags); 917 918 mLastTransactionTime = systemTime() - now; 919 mDebugInTransaction = 0; 920 invalidateHwcGeometry(); 921 // here the transaction has been committed 922} 923 924void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 925{ 926 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 927 const size_t count = currentLayers.size(); 928 929 /* 930 * Traversal of the children 931 * (perform the transaction for each of them if needed) 932 */ 933 934 if (transactionFlags & eTraversalNeeded) { 935 for (size_t i=0 ; i<count ; i++) { 936 const sp<LayerBase>& layer = currentLayers[i]; 937 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 938 if (!trFlags) continue; 939 940 const uint32_t flags = layer->doTransaction(0); 941 if (flags & Layer::eVisibleRegion) 942 mVisibleRegionsDirty = true; 943 } 944 } 945 946 /* 947 * Perform display own transactions if needed 948 */ 949 950 if (transactionFlags & eDisplayTransactionNeeded) { 951 // here we take advantage of Vector's copy-on-write semantics to 952 // improve performance by skipping the transaction entirely when 953 // know that the lists are identical 954 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 955 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 956 if (!curr.isIdenticalTo(draw)) { 957 mVisibleRegionsDirty = true; 958 const size_t cc = curr.size(); 959 size_t dc = draw.size(); 960 961 // find the displays that were removed 962 // (ie: in drawing state but not in current state) 963 // also handle displays that changed 964 // (ie: displays that are in both lists) 965 for (size_t i=0 ; i<dc ; i++) { 966 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 967 if (j < 0) { 968 // in drawing state but not in current state 969 if (!draw[i].isMainDisplay()) { 970 mDisplays.removeItem(draw.keyAt(i)); 971 } else { 972 ALOGW("trying to remove the main display"); 973 } 974 } else { 975 // this display is in both lists. see if something changed. 976 const DisplayDeviceState& state(curr[j]); 977 const wp<IBinder>& display(curr.keyAt(j)); 978 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 979 // changing the surface is like destroying and 980 // recreating the DisplayDevice, so we just remove it 981 // from the drawing state, so that it get re-added 982 // below. 983 mDisplays.removeItem(display); 984 mDrawingState.displays.removeItemsAt(i); 985 dc--; i--; 986 // at this point we must loop to the next item 987 continue; 988 } 989 990 const sp<DisplayDevice>& disp(getDisplayDevice(display)); 991 if (disp != NULL) { 992 if (state.layerStack != draw[i].layerStack) { 993 disp->setLayerStack(state.layerStack); 994 } 995 if ((state.orientation != draw[i].orientation) 996 || (state.viewport != draw[i].viewport) 997 || (state.frame != draw[i].frame)) 998 { 999 disp->setProjection(state.orientation, 1000 state.viewport, state.frame); 1001 } 1002 1003 // Walk through all the layers in currentLayers, 1004 // and update their transform hint. 1005 // 1006 // TODO: we could be much more clever about which 1007 // layers we touch and how often we do these updates 1008 // (e.g. only touch the layers associated with this 1009 // display, and only on a rotation). 1010 for (size_t i = 0; i < count; i++) { 1011 const sp<LayerBase>& layerBase = currentLayers[i]; 1012 layerBase->updateTransformHint(); 1013 } 1014 } 1015 } 1016 } 1017 1018 // find displays that were added 1019 // (ie: in current state but not in drawing state) 1020 for (size_t i=0 ; i<cc ; i++) { 1021 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1022 const DisplayDeviceState& state(curr[i]); 1023 1024 sp<FramebufferSurface> fbs; 1025 sp<SurfaceTextureClient> stc; 1026 if (!state.isVirtualDisplay()) { 1027 1028 ALOGE_IF(state.surface!=NULL, 1029 "adding a supported display, but rendering " 1030 "surface is provided (%p), ignoring it", 1031 state.surface.get()); 1032 1033 // for supported (by hwc) displays we provide our 1034 // own rendering surface 1035 fbs = new FramebufferSurface(*mHwc); 1036 stc = new SurfaceTextureClient( 1037 static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue())); 1038 } else { 1039 if (state.surface != NULL) { 1040 stc = new SurfaceTextureClient(state.surface); 1041 } 1042 } 1043 1044 const wp<IBinder>& display(curr.keyAt(i)); 1045 if (stc != NULL) { 1046 sp<DisplayDevice> hw = new DisplayDevice(this, 1047 state.type, display, stc, fbs, mEGLConfig); 1048 hw->setLayerStack(state.layerStack); 1049 hw->setProjection(state.orientation, 1050 state.viewport, state.frame); 1051 hw->setDisplayName(state.displayName); 1052 mDisplays.add(display, hw); 1053 if (hw->getDisplayType() < DisplayDevice::NUM_DISPLAY_TYPES) { 1054 // notify the system that this display is now up 1055 // (note onScreenAcquired() is safe to call from 1056 // here because we're in the main thread) 1057 onScreenAcquired(hw); 1058 } 1059 } 1060 } 1061 } 1062 } 1063 } 1064 1065 /* 1066 * Perform our own transaction if needed 1067 */ 1068 1069 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1070 if (currentLayers.size() > previousLayers.size()) { 1071 // layers have been added 1072 mVisibleRegionsDirty = true; 1073 } 1074 1075 // some layers might have been removed, so 1076 // we need to update the regions they're exposing. 1077 if (mLayersRemoved) { 1078 mLayersRemoved = false; 1079 mVisibleRegionsDirty = true; 1080 const size_t count = previousLayers.size(); 1081 for (size_t i=0 ; i<count ; i++) { 1082 const sp<LayerBase>& layer(previousLayers[i]); 1083 if (currentLayers.indexOf(layer) < 0) { 1084 // this layer is not visible anymore 1085 // TODO: we could traverse the tree from front to back and 1086 // compute the actual visible region 1087 // TODO: we could cache the transformed region 1088 const Layer::State& s(layer->drawingState()); 1089 Region visibleReg = s.transform.transform( 1090 Region(Rect(s.active.w, s.active.h))); 1091 invalidateLayerStack(s.layerStack, visibleReg); 1092 } 1093 } 1094 } 1095 1096 commitTransaction(); 1097} 1098 1099void SurfaceFlinger::commitTransaction() 1100{ 1101 if (!mLayersPendingRemoval.isEmpty()) { 1102 // Notify removed layers now that they can't be drawn from 1103 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1104 mLayersPendingRemoval[i]->onRemoved(); 1105 } 1106 mLayersPendingRemoval.clear(); 1107 } 1108 1109 mDrawingState = mCurrentState; 1110 mTransationPending = false; 1111 mTransactionCV.broadcast(); 1112} 1113 1114void SurfaceFlinger::computeVisibleRegions( 1115 const LayerVector& currentLayers, uint32_t layerStack, 1116 Region& outDirtyRegion, Region& outOpaqueRegion) 1117{ 1118 ATRACE_CALL(); 1119 1120 Region aboveOpaqueLayers; 1121 Region aboveCoveredLayers; 1122 Region dirty; 1123 1124 outDirtyRegion.clear(); 1125 1126 size_t i = currentLayers.size(); 1127 while (i--) { 1128 const sp<LayerBase>& layer = currentLayers[i]; 1129 1130 // start with the whole surface at its current location 1131 const Layer::State& s(layer->drawingState()); 1132 1133 // only consider the layers on the given later stack 1134 if (s.layerStack != layerStack) 1135 continue; 1136 1137 /* 1138 * opaqueRegion: area of a surface that is fully opaque. 1139 */ 1140 Region opaqueRegion; 1141 1142 /* 1143 * visibleRegion: area of a surface that is visible on screen 1144 * and not fully transparent. This is essentially the layer's 1145 * footprint minus the opaque regions above it. 1146 * Areas covered by a translucent surface are considered visible. 1147 */ 1148 Region visibleRegion; 1149 1150 /* 1151 * coveredRegion: area of a surface that is covered by all 1152 * visible regions above it (which includes the translucent areas). 1153 */ 1154 Region coveredRegion; 1155 1156 1157 // handle hidden surfaces by setting the visible region to empty 1158 if (CC_LIKELY(layer->isVisible())) { 1159 const bool translucent = !layer->isOpaque(); 1160 Rect bounds(layer->computeBounds()); 1161 visibleRegion.set(bounds); 1162 if (!visibleRegion.isEmpty()) { 1163 // Remove the transparent area from the visible region 1164 if (translucent) { 1165 Region transparentRegionScreen; 1166 const Transform tr(s.transform); 1167 if (tr.transformed()) { 1168 if (tr.preserveRects()) { 1169 // transform the transparent region 1170 transparentRegionScreen = tr.transform(s.transparentRegion); 1171 } else { 1172 // transformation too complex, can't do the 1173 // transparent region optimization. 1174 transparentRegionScreen.clear(); 1175 } 1176 } else { 1177 transparentRegionScreen = s.transparentRegion; 1178 } 1179 visibleRegion.subtractSelf(transparentRegionScreen); 1180 } 1181 1182 // compute the opaque region 1183 const int32_t layerOrientation = s.transform.getOrientation(); 1184 if (s.alpha==255 && !translucent && 1185 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1186 // the opaque region is the layer's footprint 1187 opaqueRegion = visibleRegion; 1188 } 1189 } 1190 } 1191 1192 // Clip the covered region to the visible region 1193 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1194 1195 // Update aboveCoveredLayers for next (lower) layer 1196 aboveCoveredLayers.orSelf(visibleRegion); 1197 1198 // subtract the opaque region covered by the layers above us 1199 visibleRegion.subtractSelf(aboveOpaqueLayers); 1200 1201 // compute this layer's dirty region 1202 if (layer->contentDirty) { 1203 // we need to invalidate the whole region 1204 dirty = visibleRegion; 1205 // as well, as the old visible region 1206 dirty.orSelf(layer->visibleRegion); 1207 layer->contentDirty = false; 1208 } else { 1209 /* compute the exposed region: 1210 * the exposed region consists of two components: 1211 * 1) what's VISIBLE now and was COVERED before 1212 * 2) what's EXPOSED now less what was EXPOSED before 1213 * 1214 * note that (1) is conservative, we start with the whole 1215 * visible region but only keep what used to be covered by 1216 * something -- which mean it may have been exposed. 1217 * 1218 * (2) handles areas that were not covered by anything but got 1219 * exposed because of a resize. 1220 */ 1221 const Region newExposed = visibleRegion - coveredRegion; 1222 const Region oldVisibleRegion = layer->visibleRegion; 1223 const Region oldCoveredRegion = layer->coveredRegion; 1224 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1225 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1226 } 1227 dirty.subtractSelf(aboveOpaqueLayers); 1228 1229 // accumulate to the screen dirty region 1230 outDirtyRegion.orSelf(dirty); 1231 1232 // Update aboveOpaqueLayers for next (lower) layer 1233 aboveOpaqueLayers.orSelf(opaqueRegion); 1234 1235 // Store the visible region is screen space 1236 layer->setVisibleRegion(visibleRegion); 1237 layer->setCoveredRegion(coveredRegion); 1238 } 1239 1240 outOpaqueRegion = aboveOpaqueLayers; 1241} 1242 1243void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1244 const Region& dirty) { 1245 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1246 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1247 if (hw->getLayerStack() == layerStack) { 1248 hw->dirtyRegion.orSelf(dirty); 1249 } 1250 } 1251} 1252 1253void SurfaceFlinger::handlePageFlip() 1254{ 1255 Region dirtyRegion; 1256 1257 bool visibleRegions = false; 1258 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1259 const size_t count = currentLayers.size(); 1260 for (size_t i=0 ; i<count ; i++) { 1261 const sp<LayerBase>& layer(currentLayers[i]); 1262 const Region dirty(layer->latchBuffer(visibleRegions)); 1263 const Layer::State& s(layer->drawingState()); 1264 invalidateLayerStack(s.layerStack, dirty); 1265 } 1266 1267 mVisibleRegionsDirty |= visibleRegions; 1268} 1269 1270void SurfaceFlinger::invalidateHwcGeometry() 1271{ 1272 mHwWorkListDirty = true; 1273} 1274 1275 1276void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1277 const Region& inDirtyRegion) 1278{ 1279 Region dirtyRegion(inDirtyRegion); 1280 1281 // compute the invalid region 1282 hw->swapRegion.orSelf(dirtyRegion); 1283 1284 uint32_t flags = hw->getFlags(); 1285 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1286 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1287 // takes a rectangle, we must make sure to update that whole 1288 // rectangle in that case 1289 dirtyRegion.set(hw->swapRegion.bounds()); 1290 } else { 1291 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1292 // We need to redraw the rectangle that will be updated 1293 // (pushed to the framebuffer). 1294 // This is needed because PARTIAL_UPDATES only takes one 1295 // rectangle instead of a region (see DisplayDevice::flip()) 1296 dirtyRegion.set(hw->swapRegion.bounds()); 1297 } else { 1298 // we need to redraw everything (the whole screen) 1299 dirtyRegion.set(hw->bounds()); 1300 hw->swapRegion = dirtyRegion; 1301 } 1302 } 1303 1304 doComposeSurfaces(hw, dirtyRegion); 1305 1306 // update the swap region and clear the dirty region 1307 hw->swapRegion.orSelf(dirtyRegion); 1308 1309 // swap buffers (presentation) 1310 hw->swapBuffers(getHwComposer()); 1311} 1312 1313void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1314{ 1315 const int32_t id = hw->getHwcDisplayId(); 1316 HWComposer& hwc(getHwComposer()); 1317 HWComposer::LayerListIterator cur = hwc.begin(id); 1318 const HWComposer::LayerListIterator end = hwc.end(id); 1319 1320 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1321 if (hasGlesComposition) { 1322 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1323 1324 // set the frame buffer 1325 glMatrixMode(GL_MODELVIEW); 1326 glLoadIdentity(); 1327 1328 // Never touch the framebuffer if we don't have any framebuffer layers 1329 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1330 if (hasHwcComposition) { 1331 // when using overlays, we assume a fully transparent framebuffer 1332 // NOTE: we could reduce how much we need to clear, for instance 1333 // remove where there are opaque FB layers. however, on some 1334 // GPUs doing a "clean slate" glClear might be more efficient. 1335 // We'll revisit later if needed. 1336 glClearColor(0, 0, 0, 0); 1337 glClear(GL_COLOR_BUFFER_BIT); 1338 } else { 1339 const Region region(hw->undefinedRegion.intersect(dirty)); 1340 // screen is already cleared here 1341 if (!region.isEmpty()) { 1342 // can happen with SurfaceView 1343 drawWormhole(hw, region); 1344 } 1345 } 1346 } 1347 1348 /* 1349 * and then, render the layers targeted at the framebuffer 1350 */ 1351 1352 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1353 const size_t count = layers.size(); 1354 const Transform& tr = hw->getTransform(); 1355 if (cur != end) { 1356 // we're using h/w composer 1357 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1358 const sp<LayerBase>& layer(layers[i]); 1359 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1360 if (!clip.isEmpty()) { 1361 switch (cur->getCompositionType()) { 1362 case HWC_OVERLAY: { 1363 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1364 && i 1365 && layer->isOpaque() 1366 && hasGlesComposition) { 1367 // never clear the very first layer since we're 1368 // guaranteed the FB is already cleared 1369 layer->clearWithOpenGL(hw, clip); 1370 } 1371 break; 1372 } 1373 case HWC_FRAMEBUFFER: { 1374 layer->draw(hw, clip); 1375 break; 1376 } 1377 case HWC_FRAMEBUFFER_TARGET: { 1378 // this should not happen as the iterator shouldn't 1379 // let us get there. 1380 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1381 break; 1382 } 1383 } 1384 } 1385 layer->setAcquireFence(hw, *cur); 1386 } 1387 } else { 1388 // we're not using h/w composer 1389 for (size_t i=0 ; i<count ; ++i) { 1390 const sp<LayerBase>& layer(layers[i]); 1391 const Region clip(dirty.intersect( 1392 tr.transform(layer->visibleRegion))); 1393 if (!clip.isEmpty()) { 1394 layer->draw(hw, clip); 1395 } 1396 } 1397 } 1398} 1399 1400void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1401 const Region& region) const 1402{ 1403 glDisable(GL_TEXTURE_EXTERNAL_OES); 1404 glDisable(GL_TEXTURE_2D); 1405 glDisable(GL_BLEND); 1406 glColor4f(0,0,0,0); 1407 1408 const int32_t height = hw->getHeight(); 1409 Region::const_iterator it = region.begin(); 1410 Region::const_iterator const end = region.end(); 1411 while (it != end) { 1412 const Rect& r = *it++; 1413 GLfloat vertices[][2] = { 1414 { r.left, height - r.top }, 1415 { r.left, height - r.bottom }, 1416 { r.right, height - r.bottom }, 1417 { r.right, height - r.top } 1418 }; 1419 glVertexPointer(2, GL_FLOAT, 0, vertices); 1420 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1421 } 1422} 1423 1424ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1425 const sp<LayerBaseClient>& lbc) 1426{ 1427 // attach this layer to the client 1428 size_t name = client->attachLayer(lbc); 1429 1430 // add this layer to the current state list 1431 Mutex::Autolock _l(mStateLock); 1432 mCurrentState.layersSortedByZ.add(lbc); 1433 1434 return ssize_t(name); 1435} 1436 1437status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1438{ 1439 Mutex::Autolock _l(mStateLock); 1440 status_t err = purgatorizeLayer_l(layer); 1441 if (err == NO_ERROR) 1442 setTransactionFlags(eTransactionNeeded); 1443 return err; 1444} 1445 1446status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1447{ 1448 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1449 if (index >= 0) { 1450 mLayersRemoved = true; 1451 return NO_ERROR; 1452 } 1453 return status_t(index); 1454} 1455 1456status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1457{ 1458 // First add the layer to the purgatory list, which makes sure it won't 1459 // go away, then remove it from the main list (through a transaction). 1460 ssize_t err = removeLayer_l(layerBase); 1461 if (err >= 0) { 1462 mLayerPurgatory.add(layerBase); 1463 } 1464 1465 mLayersPendingRemoval.push(layerBase); 1466 1467 // it's possible that we don't find a layer, because it might 1468 // have been destroyed already -- this is not technically an error 1469 // from the user because there is a race between Client::destroySurface(), 1470 // ~Client() and ~ISurface(). 1471 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1472} 1473 1474uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1475{ 1476 return android_atomic_release_load(&mTransactionFlags); 1477} 1478 1479uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1480{ 1481 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1482} 1483 1484uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1485{ 1486 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1487 if ((old & flags)==0) { // wake the server up 1488 signalTransaction(); 1489 } 1490 return old; 1491} 1492 1493void SurfaceFlinger::setTransactionState( 1494 const Vector<ComposerState>& state, 1495 const Vector<DisplayState>& displays, 1496 uint32_t flags) 1497{ 1498 Mutex::Autolock _l(mStateLock); 1499 uint32_t transactionFlags = 0; 1500 1501 size_t count = displays.size(); 1502 for (size_t i=0 ; i<count ; i++) { 1503 const DisplayState& s(displays[i]); 1504 transactionFlags |= setDisplayStateLocked(s); 1505 } 1506 1507 count = state.size(); 1508 for (size_t i=0 ; i<count ; i++) { 1509 const ComposerState& s(state[i]); 1510 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1511 transactionFlags |= setClientStateLocked(client, s.state); 1512 } 1513 1514 if (transactionFlags) { 1515 // this triggers the transaction 1516 setTransactionFlags(transactionFlags); 1517 1518 // if this is a synchronous transaction, wait for it to take effect 1519 // before returning. 1520 if (flags & eSynchronous) { 1521 mTransationPending = true; 1522 } 1523 while (mTransationPending) { 1524 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1525 if (CC_UNLIKELY(err != NO_ERROR)) { 1526 // just in case something goes wrong in SF, return to the 1527 // called after a few seconds. 1528 ALOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1529 mTransationPending = false; 1530 break; 1531 } 1532 } 1533 } 1534} 1535 1536uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1537{ 1538 uint32_t flags = 0; 1539 DisplayDeviceState& disp(mCurrentState.displays.editValueFor(s.token)); 1540 if (disp.isValid()) { 1541 const uint32_t what = s.what; 1542 if (what & DisplayState::eSurfaceChanged) { 1543 if (disp.surface->asBinder() != s.surface->asBinder()) { 1544 disp.surface = s.surface; 1545 flags |= eDisplayTransactionNeeded; 1546 } 1547 } 1548 if (what & DisplayState::eLayerStackChanged) { 1549 if (disp.layerStack != s.layerStack) { 1550 disp.layerStack = s.layerStack; 1551 flags |= eDisplayTransactionNeeded; 1552 } 1553 } 1554 if (what & DisplayState::eDisplayProjectionChanged) { 1555 if (disp.orientation != s.orientation) { 1556 disp.orientation = s.orientation; 1557 flags |= eDisplayTransactionNeeded; 1558 } 1559 if (disp.frame != s.frame) { 1560 disp.frame = s.frame; 1561 flags |= eDisplayTransactionNeeded; 1562 } 1563 if (disp.viewport != s.viewport) { 1564 disp.viewport = s.viewport; 1565 flags |= eDisplayTransactionNeeded; 1566 } 1567 } 1568 } 1569 return flags; 1570} 1571 1572uint32_t SurfaceFlinger::setClientStateLocked( 1573 const sp<Client>& client, 1574 const layer_state_t& s) 1575{ 1576 uint32_t flags = 0; 1577 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1578 if (layer != 0) { 1579 const uint32_t what = s.what; 1580 if (what & layer_state_t::ePositionChanged) { 1581 if (layer->setPosition(s.x, s.y)) 1582 flags |= eTraversalNeeded; 1583 } 1584 if (what & layer_state_t::eLayerChanged) { 1585 // NOTE: index needs to be calculated before we update the state 1586 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1587 if (layer->setLayer(s.z)) { 1588 mCurrentState.layersSortedByZ.removeAt(idx); 1589 mCurrentState.layersSortedByZ.add(layer); 1590 // we need traversal (state changed) 1591 // AND transaction (list changed) 1592 flags |= eTransactionNeeded|eTraversalNeeded; 1593 } 1594 } 1595 if (what & layer_state_t::eSizeChanged) { 1596 if (layer->setSize(s.w, s.h)) { 1597 flags |= eTraversalNeeded; 1598 } 1599 } 1600 if (what & layer_state_t::eAlphaChanged) { 1601 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1602 flags |= eTraversalNeeded; 1603 } 1604 if (what & layer_state_t::eMatrixChanged) { 1605 if (layer->setMatrix(s.matrix)) 1606 flags |= eTraversalNeeded; 1607 } 1608 if (what & layer_state_t::eTransparentRegionChanged) { 1609 if (layer->setTransparentRegionHint(s.transparentRegion)) 1610 flags |= eTraversalNeeded; 1611 } 1612 if (what & layer_state_t::eVisibilityChanged) { 1613 if (layer->setFlags(s.flags, s.mask)) 1614 flags |= eTraversalNeeded; 1615 } 1616 if (what & layer_state_t::eCropChanged) { 1617 if (layer->setCrop(s.crop)) 1618 flags |= eTraversalNeeded; 1619 } 1620 if (what & layer_state_t::eLayerStackChanged) { 1621 // NOTE: index needs to be calculated before we update the state 1622 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1623 if (layer->setLayerStack(s.layerStack)) { 1624 mCurrentState.layersSortedByZ.removeAt(idx); 1625 mCurrentState.layersSortedByZ.add(layer); 1626 // we need traversal (state changed) 1627 // AND transaction (list changed) 1628 flags |= eTransactionNeeded|eTraversalNeeded; 1629 } 1630 } 1631 } 1632 return flags; 1633} 1634 1635sp<ISurface> SurfaceFlinger::createLayer( 1636 ISurfaceComposerClient::surface_data_t* params, 1637 const String8& name, 1638 const sp<Client>& client, 1639 uint32_t w, uint32_t h, PixelFormat format, 1640 uint32_t flags) 1641{ 1642 sp<LayerBaseClient> layer; 1643 sp<ISurface> surfaceHandle; 1644 1645 if (int32_t(w|h) < 0) { 1646 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1647 int(w), int(h)); 1648 return surfaceHandle; 1649 } 1650 1651 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1652 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1653 case ISurfaceComposerClient::eFXSurfaceNormal: 1654 layer = createNormalLayer(client, w, h, flags, format); 1655 break; 1656 case ISurfaceComposerClient::eFXSurfaceBlur: 1657 case ISurfaceComposerClient::eFXSurfaceDim: 1658 layer = createDimLayer(client, w, h, flags); 1659 break; 1660 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1661 layer = createScreenshotLayer(client, w, h, flags); 1662 break; 1663 } 1664 1665 if (layer != 0) { 1666 layer->initStates(w, h, flags); 1667 layer->setName(name); 1668 ssize_t token = addClientLayer(client, layer); 1669 surfaceHandle = layer->getSurface(); 1670 if (surfaceHandle != 0) { 1671 params->token = token; 1672 params->identity = layer->getIdentity(); 1673 } 1674 setTransactionFlags(eTransactionNeeded); 1675 } 1676 1677 return surfaceHandle; 1678} 1679 1680sp<Layer> SurfaceFlinger::createNormalLayer( 1681 const sp<Client>& client, 1682 uint32_t w, uint32_t h, uint32_t flags, 1683 PixelFormat& format) 1684{ 1685 // initialize the surfaces 1686 switch (format) { 1687 case PIXEL_FORMAT_TRANSPARENT: 1688 case PIXEL_FORMAT_TRANSLUCENT: 1689 format = PIXEL_FORMAT_RGBA_8888; 1690 break; 1691 case PIXEL_FORMAT_OPAQUE: 1692#ifdef NO_RGBX_8888 1693 format = PIXEL_FORMAT_RGB_565; 1694#else 1695 format = PIXEL_FORMAT_RGBX_8888; 1696#endif 1697 break; 1698 } 1699 1700#ifdef NO_RGBX_8888 1701 if (format == PIXEL_FORMAT_RGBX_8888) 1702 format = PIXEL_FORMAT_RGBA_8888; 1703#endif 1704 1705 sp<Layer> layer = new Layer(this, client); 1706 status_t err = layer->setBuffers(w, h, format, flags); 1707 if (CC_LIKELY(err != NO_ERROR)) { 1708 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1709 layer.clear(); 1710 } 1711 return layer; 1712} 1713 1714sp<LayerDim> SurfaceFlinger::createDimLayer( 1715 const sp<Client>& client, 1716 uint32_t w, uint32_t h, uint32_t flags) 1717{ 1718 sp<LayerDim> layer = new LayerDim(this, client); 1719 return layer; 1720} 1721 1722sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1723 const sp<Client>& client, 1724 uint32_t w, uint32_t h, uint32_t flags) 1725{ 1726 sp<LayerScreenshot> layer = new LayerScreenshot(this, client); 1727 return layer; 1728} 1729 1730status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 1731{ 1732 /* 1733 * called by the window manager, when a surface should be marked for 1734 * destruction. 1735 * 1736 * The surface is removed from the current and drawing lists, but placed 1737 * in the purgatory queue, so it's not destroyed right-away (we need 1738 * to wait for all client's references to go away first). 1739 */ 1740 1741 status_t err = NAME_NOT_FOUND; 1742 Mutex::Autolock _l(mStateLock); 1743 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1744 1745 if (layer != 0) { 1746 err = purgatorizeLayer_l(layer); 1747 if (err == NO_ERROR) { 1748 setTransactionFlags(eTransactionNeeded); 1749 } 1750 } 1751 return err; 1752} 1753 1754status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 1755{ 1756 // called by ~ISurface() when all references are gone 1757 status_t err = NO_ERROR; 1758 sp<LayerBaseClient> l(layer.promote()); 1759 if (l != NULL) { 1760 Mutex::Autolock _l(mStateLock); 1761 err = removeLayer_l(l); 1762 if (err == NAME_NOT_FOUND) { 1763 // The surface wasn't in the current list, which means it was 1764 // removed already, which means it is in the purgatory, 1765 // and need to be removed from there. 1766 ssize_t idx = mLayerPurgatory.remove(l); 1767 ALOGE_IF(idx < 0, 1768 "layer=%p is not in the purgatory list", l.get()); 1769 } 1770 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1771 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1772 } 1773 return err; 1774} 1775 1776// --------------------------------------------------------------------------- 1777 1778void SurfaceFlinger::onInitializeDisplays() { 1779 // reset screen orientation 1780 Vector<ComposerState> state; 1781 Vector<DisplayState> displays; 1782 DisplayState d; 1783 d.what = DisplayState::eDisplayProjectionChanged; 1784 d.token = mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY]; 1785 d.orientation = DisplayState::eOrientationDefault; 1786 d.frame.makeInvalid(); 1787 d.viewport.makeInvalid(); 1788 displays.add(d); 1789 setTransactionState(state, displays, 0); 1790 onScreenAcquired(getDefaultDisplayDevice()); 1791} 1792 1793void SurfaceFlinger::initializeDisplays() { 1794 class MessageScreenInitialized : public MessageBase { 1795 SurfaceFlinger* flinger; 1796 public: 1797 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 1798 virtual bool handler() { 1799 flinger->onInitializeDisplays(); 1800 return true; 1801 } 1802 }; 1803 sp<MessageBase> msg = new MessageScreenInitialized(this); 1804 postMessageAsync(msg); // we may be called from main thread, use async message 1805} 1806 1807 1808void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 1809 ALOGD("Screen about to return, flinger = %p", this); 1810 getHwComposer().acquire(); 1811 hw->acquireScreen(); 1812 if (hw->getDisplayType() == DisplayDevice::DISPLAY_PRIMARY) { 1813 // FIXME: eventthread only knows about the main display right now 1814 mEventThread->onScreenAcquired(); 1815 } 1816 mVisibleRegionsDirty = true; 1817 repaintEverything(); 1818} 1819 1820void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 1821 ALOGD("About to give-up screen, flinger = %p", this); 1822 if (hw->isScreenAcquired()) { 1823 if (hw->getDisplayType() == DisplayDevice::DISPLAY_PRIMARY) { 1824 // FIXME: eventthread only knows about the main display right now 1825 mEventThread->onScreenReleased(); 1826 } 1827 hw->releaseScreen(); 1828 getHwComposer().release(); 1829 mVisibleRegionsDirty = true; 1830 // from this point on, SF will stop drawing 1831 } 1832} 1833 1834void SurfaceFlinger::unblank() { 1835 class MessageScreenAcquired : public MessageBase { 1836 SurfaceFlinger* flinger; 1837 public: 1838 MessageScreenAcquired(SurfaceFlinger* flinger) : flinger(flinger) { } 1839 virtual bool handler() { 1840 // FIXME: should this be per-display? 1841 flinger->onScreenAcquired(flinger->getDefaultDisplayDevice()); 1842 return true; 1843 } 1844 }; 1845 sp<MessageBase> msg = new MessageScreenAcquired(this); 1846 postMessageSync(msg); 1847} 1848 1849void SurfaceFlinger::blank() { 1850 class MessageScreenReleased : public MessageBase { 1851 SurfaceFlinger* flinger; 1852 public: 1853 MessageScreenReleased(SurfaceFlinger* flinger) : flinger(flinger) { } 1854 virtual bool handler() { 1855 // FIXME: should this be per-display? 1856 flinger->onScreenReleased(flinger->getDefaultDisplayDevice()); 1857 return true; 1858 } 1859 }; 1860 sp<MessageBase> msg = new MessageScreenReleased(this); 1861 postMessageSync(msg); 1862} 1863 1864// --------------------------------------------------------------------------- 1865 1866status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1867{ 1868 const size_t SIZE = 4096; 1869 char buffer[SIZE]; 1870 String8 result; 1871 1872 if (!PermissionCache::checkCallingPermission(sDump)) { 1873 snprintf(buffer, SIZE, "Permission Denial: " 1874 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1875 IPCThreadState::self()->getCallingPid(), 1876 IPCThreadState::self()->getCallingUid()); 1877 result.append(buffer); 1878 } else { 1879 // Try to get the main lock, but don't insist if we can't 1880 // (this would indicate SF is stuck, but we want to be able to 1881 // print something in dumpsys). 1882 int retry = 3; 1883 while (mStateLock.tryLock()<0 && --retry>=0) { 1884 usleep(1000000); 1885 } 1886 const bool locked(retry >= 0); 1887 if (!locked) { 1888 snprintf(buffer, SIZE, 1889 "SurfaceFlinger appears to be unresponsive, " 1890 "dumping anyways (no locks held)\n"); 1891 result.append(buffer); 1892 } 1893 1894 bool dumpAll = true; 1895 size_t index = 0; 1896 size_t numArgs = args.size(); 1897 if (numArgs) { 1898 if ((index < numArgs) && 1899 (args[index] == String16("--list"))) { 1900 index++; 1901 listLayersLocked(args, index, result, buffer, SIZE); 1902 dumpAll = false; 1903 } 1904 1905 if ((index < numArgs) && 1906 (args[index] == String16("--latency"))) { 1907 index++; 1908 dumpStatsLocked(args, index, result, buffer, SIZE); 1909 dumpAll = false; 1910 } 1911 1912 if ((index < numArgs) && 1913 (args[index] == String16("--latency-clear"))) { 1914 index++; 1915 clearStatsLocked(args, index, result, buffer, SIZE); 1916 dumpAll = false; 1917 } 1918 } 1919 1920 if (dumpAll) { 1921 dumpAllLocked(result, buffer, SIZE); 1922 } 1923 1924 if (locked) { 1925 mStateLock.unlock(); 1926 } 1927 } 1928 write(fd, result.string(), result.size()); 1929 return NO_ERROR; 1930} 1931 1932void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 1933 String8& result, char* buffer, size_t SIZE) const 1934{ 1935 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1936 const size_t count = currentLayers.size(); 1937 for (size_t i=0 ; i<count ; i++) { 1938 const sp<LayerBase>& layer(currentLayers[i]); 1939 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1940 result.append(buffer); 1941 } 1942} 1943 1944void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 1945 String8& result, char* buffer, size_t SIZE) const 1946{ 1947 String8 name; 1948 if (index < args.size()) { 1949 name = String8(args[index]); 1950 index++; 1951 } 1952 1953 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1954 const size_t count = currentLayers.size(); 1955 for (size_t i=0 ; i<count ; i++) { 1956 const sp<LayerBase>& layer(currentLayers[i]); 1957 if (name.isEmpty()) { 1958 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1959 result.append(buffer); 1960 } 1961 if (name.isEmpty() || (name == layer->getName())) { 1962 layer->dumpStats(result, buffer, SIZE); 1963 } 1964 } 1965} 1966 1967void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 1968 String8& result, char* buffer, size_t SIZE) const 1969{ 1970 String8 name; 1971 if (index < args.size()) { 1972 name = String8(args[index]); 1973 index++; 1974 } 1975 1976 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1977 const size_t count = currentLayers.size(); 1978 for (size_t i=0 ; i<count ; i++) { 1979 const sp<LayerBase>& layer(currentLayers[i]); 1980 if (name.isEmpty() || (name == layer->getName())) { 1981 layer->clearStats(); 1982 } 1983 } 1984} 1985 1986void SurfaceFlinger::dumpAllLocked( 1987 String8& result, char* buffer, size_t SIZE) const 1988{ 1989 // figure out if we're stuck somewhere 1990 const nsecs_t now = systemTime(); 1991 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1992 const nsecs_t inTransaction(mDebugInTransaction); 1993 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1994 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1995 1996 /* 1997 * Dump the visible layer list 1998 */ 1999 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2000 const size_t count = currentLayers.size(); 2001 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2002 result.append(buffer); 2003 for (size_t i=0 ; i<count ; i++) { 2004 const sp<LayerBase>& layer(currentLayers[i]); 2005 layer->dump(result, buffer, SIZE); 2006 } 2007 2008 /* 2009 * Dump the layers in the purgatory 2010 */ 2011 2012 const size_t purgatorySize = mLayerPurgatory.size(); 2013 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 2014 result.append(buffer); 2015 for (size_t i=0 ; i<purgatorySize ; i++) { 2016 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 2017 layer->shortDump(result, buffer, SIZE); 2018 } 2019 2020 /* 2021 * Dump Display state 2022 */ 2023 2024 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2025 result.append(buffer); 2026 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2027 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2028 hw->dump(result, buffer, SIZE); 2029 } 2030 2031 /* 2032 * Dump SurfaceFlinger global state 2033 */ 2034 2035 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2036 result.append(buffer); 2037 2038 HWComposer& hwc(getHwComposer()); 2039 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2040 const GLExtensions& extensions(GLExtensions::getInstance()); 2041 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2042 extensions.getVendor(), 2043 extensions.getRenderer(), 2044 extensions.getVersion()); 2045 result.append(buffer); 2046 2047 snprintf(buffer, SIZE, "EGL : %s\n", 2048 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2049 result.append(buffer); 2050 2051 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2052 result.append(buffer); 2053 2054 hw->undefinedRegion.dump(result, "undefinedRegion"); 2055 snprintf(buffer, SIZE, 2056 " orientation=%d, canDraw=%d\n", 2057 hw->getOrientation(), hw->canDraw()); 2058 result.append(buffer); 2059 snprintf(buffer, SIZE, 2060 " last eglSwapBuffers() time: %f us\n" 2061 " last transaction time : %f us\n" 2062 " transaction-flags : %08x\n" 2063 " refresh-rate : %f fps\n" 2064 " x-dpi : %f\n" 2065 " y-dpi : %f\n", 2066 mLastSwapBufferTime/1000.0, 2067 mLastTransactionTime/1000.0, 2068 mTransactionFlags, 2069 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2070 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2071 hwc.getDpiY(HWC_DISPLAY_PRIMARY)); 2072 result.append(buffer); 2073 2074 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2075 inSwapBuffersDuration/1000.0); 2076 result.append(buffer); 2077 2078 snprintf(buffer, SIZE, " transaction time: %f us\n", 2079 inTransactionDuration/1000.0); 2080 result.append(buffer); 2081 2082 /* 2083 * VSYNC state 2084 */ 2085 mEventThread->dump(result, buffer, SIZE); 2086 2087 /* 2088 * Dump HWComposer state 2089 */ 2090 snprintf(buffer, SIZE, "h/w composer state:\n"); 2091 result.append(buffer); 2092 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2093 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2094 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2095 result.append(buffer); 2096 hwc.dump(result, buffer, SIZE, hw->getVisibleLayersSortedByZ()); 2097 2098 /* 2099 * Dump gralloc state 2100 */ 2101 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2102 alloc.dump(result); 2103} 2104 2105bool SurfaceFlinger::startDdmConnection() 2106{ 2107 void* libddmconnection_dso = 2108 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2109 if (!libddmconnection_dso) { 2110 return false; 2111 } 2112 void (*DdmConnection_start)(const char* name); 2113 DdmConnection_start = 2114 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2115 if (!DdmConnection_start) { 2116 dlclose(libddmconnection_dso); 2117 return false; 2118 } 2119 (*DdmConnection_start)(getServiceName()); 2120 return true; 2121} 2122 2123status_t SurfaceFlinger::onTransact( 2124 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2125{ 2126 switch (code) { 2127 case CREATE_CONNECTION: 2128 case SET_TRANSACTION_STATE: 2129 case BOOT_FINISHED: 2130 case BLANK: 2131 case UNBLANK: 2132 { 2133 // codes that require permission check 2134 IPCThreadState* ipc = IPCThreadState::self(); 2135 const int pid = ipc->getCallingPid(); 2136 const int uid = ipc->getCallingUid(); 2137 if ((uid != AID_GRAPHICS) && 2138 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2139 ALOGE("Permission Denial: " 2140 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2141 return PERMISSION_DENIED; 2142 } 2143 break; 2144 } 2145 case CAPTURE_SCREEN: 2146 { 2147 // codes that require permission check 2148 IPCThreadState* ipc = IPCThreadState::self(); 2149 const int pid = ipc->getCallingPid(); 2150 const int uid = ipc->getCallingUid(); 2151 if ((uid != AID_GRAPHICS) && 2152 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2153 ALOGE("Permission Denial: " 2154 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2155 return PERMISSION_DENIED; 2156 } 2157 break; 2158 } 2159 } 2160 2161 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2162 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2163 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2164 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2165 IPCThreadState* ipc = IPCThreadState::self(); 2166 const int pid = ipc->getCallingPid(); 2167 const int uid = ipc->getCallingUid(); 2168 ALOGE("Permission Denial: " 2169 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2170 return PERMISSION_DENIED; 2171 } 2172 int n; 2173 switch (code) { 2174 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2175 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2176 return NO_ERROR; 2177 case 1002: // SHOW_UPDATES 2178 n = data.readInt32(); 2179 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2180 invalidateHwcGeometry(); 2181 repaintEverything(); 2182 return NO_ERROR; 2183 case 1004:{ // repaint everything 2184 repaintEverything(); 2185 return NO_ERROR; 2186 } 2187 case 1005:{ // force transaction 2188 setTransactionFlags( 2189 eTransactionNeeded| 2190 eDisplayTransactionNeeded| 2191 eTraversalNeeded); 2192 return NO_ERROR; 2193 } 2194 case 1006:{ // send empty update 2195 signalRefresh(); 2196 return NO_ERROR; 2197 } 2198 case 1008: // toggle use of hw composer 2199 n = data.readInt32(); 2200 mDebugDisableHWC = n ? 1 : 0; 2201 invalidateHwcGeometry(); 2202 repaintEverything(); 2203 return NO_ERROR; 2204 case 1009: // toggle use of transform hint 2205 n = data.readInt32(); 2206 mDebugDisableTransformHint = n ? 1 : 0; 2207 invalidateHwcGeometry(); 2208 repaintEverything(); 2209 return NO_ERROR; 2210 case 1010: // interrogate. 2211 reply->writeInt32(0); 2212 reply->writeInt32(0); 2213 reply->writeInt32(mDebugRegion); 2214 reply->writeInt32(0); 2215 reply->writeInt32(mDebugDisableHWC); 2216 return NO_ERROR; 2217 case 1013: { 2218 Mutex::Autolock _l(mStateLock); 2219 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2220 reply->writeInt32(hw->getPageFlipCount()); 2221 } 2222 return NO_ERROR; 2223 } 2224 } 2225 return err; 2226} 2227 2228void SurfaceFlinger::repaintEverything() { 2229 android_atomic_or(1, &mRepaintEverything); 2230 signalTransaction(); 2231} 2232 2233// --------------------------------------------------------------------------- 2234 2235status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack, 2236 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2237{ 2238 Mutex::Autolock _l(mStateLock); 2239 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut); 2240} 2241 2242status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack, 2243 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2244{ 2245 ATRACE_CALL(); 2246 2247 if (!GLExtensions::getInstance().haveFramebufferObject()) 2248 return INVALID_OPERATION; 2249 2250 // get screen geometry 2251 // FIXME: figure out what it means to have a screenshot texture w/ multi-display 2252 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2253 const uint32_t hw_w = hw->getWidth(); 2254 const uint32_t hw_h = hw->getHeight(); 2255 GLfloat u = 1; 2256 GLfloat v = 1; 2257 2258 // make sure to clear all GL error flags 2259 while ( glGetError() != GL_NO_ERROR ) ; 2260 2261 // create a FBO 2262 GLuint name, tname; 2263 glGenTextures(1, &tname); 2264 glBindTexture(GL_TEXTURE_2D, tname); 2265 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2266 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2267 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2268 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2269 if (glGetError() != GL_NO_ERROR) { 2270 while ( glGetError() != GL_NO_ERROR ) ; 2271 GLint tw = (2 << (31 - clz(hw_w))); 2272 GLint th = (2 << (31 - clz(hw_h))); 2273 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2274 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2275 u = GLfloat(hw_w) / tw; 2276 v = GLfloat(hw_h) / th; 2277 } 2278 glGenFramebuffersOES(1, &name); 2279 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2280 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2281 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2282 2283 // redraw the screen entirely... 2284 glDisable(GL_TEXTURE_EXTERNAL_OES); 2285 glDisable(GL_TEXTURE_2D); 2286 glClearColor(0,0,0,1); 2287 glClear(GL_COLOR_BUFFER_BIT); 2288 glMatrixMode(GL_MODELVIEW); 2289 glLoadIdentity(); 2290 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2291 const size_t count = layers.size(); 2292 for (size_t i=0 ; i<count ; ++i) { 2293 const sp<LayerBase>& layer(layers[i]); 2294 layer->draw(hw); 2295 } 2296 2297 hw->compositionComplete(); 2298 2299 // back to main framebuffer 2300 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2301 glDeleteFramebuffersOES(1, &name); 2302 2303 *textureName = tname; 2304 *uOut = u; 2305 *vOut = v; 2306 return NO_ERROR; 2307} 2308 2309// --------------------------------------------------------------------------- 2310 2311status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display, 2312 sp<IMemoryHeap>* heap, 2313 uint32_t* w, uint32_t* h, PixelFormat* f, 2314 uint32_t sw, uint32_t sh, 2315 uint32_t minLayerZ, uint32_t maxLayerZ) 2316{ 2317 ATRACE_CALL(); 2318 2319 status_t result = PERMISSION_DENIED; 2320 2321 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2322 return INVALID_OPERATION; 2323 } 2324 2325 // get screen geometry 2326 sp<const DisplayDevice> hw(getDisplayDevice(display)); 2327 const uint32_t hw_w = hw->getWidth(); 2328 const uint32_t hw_h = hw->getHeight(); 2329 2330 // if we have secure windows on this display, never allow the screen capture 2331 if (hw->getSecureLayerVisible()) { 2332 ALOGW("FB is protected: PERMISSION_DENIED"); 2333 return PERMISSION_DENIED; 2334 } 2335 2336 if ((sw > hw_w) || (sh > hw_h)) { 2337 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2338 return BAD_VALUE; 2339 } 2340 2341 sw = (!sw) ? hw_w : sw; 2342 sh = (!sh) ? hw_h : sh; 2343 const size_t size = sw * sh * 4; 2344 const bool filtering = sw != hw_w || sh != hw_h; 2345 2346// ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2347// sw, sh, minLayerZ, maxLayerZ); 2348 2349 // make sure to clear all GL error flags 2350 while ( glGetError() != GL_NO_ERROR ) ; 2351 2352 // create a FBO 2353 GLuint name, tname; 2354 glGenRenderbuffersOES(1, &tname); 2355 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2356 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2357 2358 glGenFramebuffersOES(1, &name); 2359 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2360 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2361 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2362 2363 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2364 2365 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2366 2367 // invert everything, b/c glReadPixel() below will invert the FB 2368 glViewport(0, 0, sw, sh); 2369 glMatrixMode(GL_PROJECTION); 2370 glPushMatrix(); 2371 glLoadIdentity(); 2372 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2373 glMatrixMode(GL_MODELVIEW); 2374 2375 // redraw the screen entirely... 2376 glClearColor(0,0,0,1); 2377 glClear(GL_COLOR_BUFFER_BIT); 2378 2379 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2380 const size_t count = layers.size(); 2381 for (size_t i=0 ; i<count ; ++i) { 2382 const sp<LayerBase>& layer(layers[i]); 2383 const uint32_t z = layer->drawingState().z; 2384 if (z >= minLayerZ && z <= maxLayerZ) { 2385 if (filtering) layer->setFiltering(true); 2386 layer->draw(hw); 2387 if (filtering) layer->setFiltering(false); 2388 } 2389 } 2390 2391 // check for errors and return screen capture 2392 if (glGetError() != GL_NO_ERROR) { 2393 // error while rendering 2394 result = INVALID_OPERATION; 2395 } else { 2396 // allocate shared memory large enough to hold the 2397 // screen capture 2398 sp<MemoryHeapBase> base( 2399 new MemoryHeapBase(size, 0, "screen-capture") ); 2400 void* const ptr = base->getBase(); 2401 if (ptr) { 2402 // capture the screen with glReadPixels() 2403 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2404 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2405 if (glGetError() == GL_NO_ERROR) { 2406 *heap = base; 2407 *w = sw; 2408 *h = sh; 2409 *f = PIXEL_FORMAT_RGBA_8888; 2410 result = NO_ERROR; 2411 } 2412 } else { 2413 result = NO_MEMORY; 2414 } 2415 } 2416 glViewport(0, 0, hw_w, hw_h); 2417 glMatrixMode(GL_PROJECTION); 2418 glPopMatrix(); 2419 glMatrixMode(GL_MODELVIEW); 2420 } else { 2421 result = BAD_VALUE; 2422 } 2423 2424 // release FBO resources 2425 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2426 glDeleteRenderbuffersOES(1, &tname); 2427 glDeleteFramebuffersOES(1, &name); 2428 2429 hw->compositionComplete(); 2430 2431// ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2432 2433 return result; 2434} 2435 2436 2437status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2438 sp<IMemoryHeap>* heap, 2439 uint32_t* width, uint32_t* height, PixelFormat* format, 2440 uint32_t sw, uint32_t sh, 2441 uint32_t minLayerZ, uint32_t maxLayerZ) 2442{ 2443 if (CC_UNLIKELY(display == 0)) 2444 return BAD_VALUE; 2445 2446 if (!GLExtensions::getInstance().haveFramebufferObject()) 2447 return INVALID_OPERATION; 2448 2449 class MessageCaptureScreen : public MessageBase { 2450 SurfaceFlinger* flinger; 2451 sp<IBinder> display; 2452 sp<IMemoryHeap>* heap; 2453 uint32_t* w; 2454 uint32_t* h; 2455 PixelFormat* f; 2456 uint32_t sw; 2457 uint32_t sh; 2458 uint32_t minLayerZ; 2459 uint32_t maxLayerZ; 2460 status_t result; 2461 public: 2462 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display, 2463 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2464 uint32_t sw, uint32_t sh, 2465 uint32_t minLayerZ, uint32_t maxLayerZ) 2466 : flinger(flinger), display(display), 2467 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2468 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2469 result(PERMISSION_DENIED) 2470 { 2471 } 2472 status_t getResult() const { 2473 return result; 2474 } 2475 virtual bool handler() { 2476 Mutex::Autolock _l(flinger->mStateLock); 2477 result = flinger->captureScreenImplLocked(display, 2478 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2479 return true; 2480 } 2481 }; 2482 2483 sp<MessageBase> msg = new MessageCaptureScreen(this, 2484 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2485 status_t res = postMessageSync(msg); 2486 if (res == NO_ERROR) { 2487 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2488 } 2489 return res; 2490} 2491 2492// --------------------------------------------------------------------------- 2493 2494SurfaceFlinger::LayerVector::LayerVector() { 2495} 2496 2497SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2498 : SortedVector<sp<LayerBase> >(rhs) { 2499} 2500 2501int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2502 const void* rhs) const 2503{ 2504 // sort layers per layer-stack, then by z-order and finally by sequence 2505 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2506 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2507 2508 uint32_t ls = l->currentState().layerStack; 2509 uint32_t rs = r->currentState().layerStack; 2510 if (ls != rs) 2511 return ls - rs; 2512 2513 uint32_t lz = l->currentState().z; 2514 uint32_t rz = r->currentState().z; 2515 if (lz != rz) 2516 return lz - rz; 2517 2518 return l->sequence - r->sequence; 2519} 2520 2521// --------------------------------------------------------------------------- 2522 2523SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2524 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2525} 2526 2527SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2528 : type(type), layerStack(0), orientation(0) { 2529 viewport.makeInvalid(); 2530 frame.makeInvalid(); 2531} 2532 2533// --------------------------------------------------------------------------- 2534 2535GraphicBufferAlloc::GraphicBufferAlloc() {} 2536 2537GraphicBufferAlloc::~GraphicBufferAlloc() {} 2538 2539sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2540 PixelFormat format, uint32_t usage, status_t* error) { 2541 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2542 status_t err = graphicBuffer->initCheck(); 2543 *error = err; 2544 if (err != 0 || graphicBuffer->handle == 0) { 2545 if (err == NO_MEMORY) { 2546 GraphicBuffer::dumpAllocationsToSystemLog(); 2547 } 2548 ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2549 "failed (%s), handle=%p", 2550 w, h, strerror(-err), graphicBuffer->handle); 2551 return 0; 2552 } 2553 return graphicBuffer; 2554} 2555 2556// --------------------------------------------------------------------------- 2557 2558}; // namespace android 2559