SurfaceFlinger.cpp revision 3165cc21cfea781988407b19bd83292b19f05f55
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 mExternalDisplaySurface(EGL_NO_SURFACE) 100{ 101 ALOGI("SurfaceFlinger is starting"); 102 103 // debugging stuff... 104 char value[PROPERTY_VALUE_MAX]; 105 106 property_get("debug.sf.showupdates", value, "0"); 107 mDebugRegion = atoi(value); 108 109 property_get("debug.sf.ddms", value, "0"); 110 mDebugDDMS = atoi(value); 111 if (mDebugDDMS) { 112 DdmConnection::start(getServiceName()); 113 } 114 115 ALOGI_IF(mDebugRegion, "showupdates enabled"); 116 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 117} 118 119void SurfaceFlinger::onFirstRef() 120{ 121 mEventQueue.init(this); 122 123 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 124 125 // Wait for the main thread to be done with its initialization 126 mReadyToRunBarrier.wait(); 127} 128 129 130SurfaceFlinger::~SurfaceFlinger() 131{ 132 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 133 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 134 eglTerminate(display); 135} 136 137void SurfaceFlinger::binderDied(const wp<IBinder>& who) 138{ 139 // the window manager died on us. prepare its eulogy. 140 141 // reset screen orientation 142 Vector<ComposerState> state; 143 Vector<DisplayState> displays; 144 DisplayState d; 145 d.orientation = DisplayState::eOrientationDefault; 146 displays.add(d); 147 setTransactionState(state, displays, 0); 148 149 // restart the boot-animation 150 startBootAnim(); 151} 152 153sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 154{ 155 sp<ISurfaceComposerClient> bclient; 156 sp<Client> client(new Client(this)); 157 status_t err = client->initCheck(); 158 if (err == NO_ERROR) { 159 bclient = client; 160 } 161 return bclient; 162} 163 164sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 165{ 166 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 167 return gba; 168} 169 170void SurfaceFlinger::bootFinished() 171{ 172 const nsecs_t now = systemTime(); 173 const nsecs_t duration = now - mBootTime; 174 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 175 mBootFinished = true; 176 177 // wait patiently for the window manager death 178 const String16 name("window"); 179 sp<IBinder> window(defaultServiceManager()->getService(name)); 180 if (window != 0) { 181 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 182 } 183 184 // stop boot animation 185 // formerly we would just kill the process, but we now ask it to exit so it 186 // can choose where to stop the animation. 187 property_set("service.bootanim.exit", "1"); 188} 189 190void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 191 class MessageDestroyGLTexture : public MessageBase { 192 GLuint texture; 193 public: 194 MessageDestroyGLTexture(GLuint texture) 195 : texture(texture) { 196 } 197 virtual bool handler() { 198 glDeleteTextures(1, &texture); 199 return true; 200 } 201 }; 202 postMessageAsync(new MessageDestroyGLTexture(texture)); 203} 204 205status_t SurfaceFlinger::selectConfigForPixelFormat( 206 EGLDisplay dpy, 207 EGLint const* attrs, 208 PixelFormat format, 209 EGLConfig* outConfig) 210{ 211 EGLConfig config = NULL; 212 EGLint numConfigs = -1, n=0; 213 eglGetConfigs(dpy, NULL, 0, &numConfigs); 214 EGLConfig* const configs = new EGLConfig[numConfigs]; 215 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 216 for (int i=0 ; i<n ; i++) { 217 EGLint nativeVisualId = 0; 218 eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId); 219 if (nativeVisualId>0 && format == nativeVisualId) { 220 *outConfig = configs[i]; 221 delete [] configs; 222 return NO_ERROR; 223 } 224 } 225 delete [] configs; 226 return NAME_NOT_FOUND; 227} 228 229EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 230 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 231 // it is to be used with WIFI displays 232 EGLConfig config; 233 EGLint dummy; 234 status_t err; 235 EGLint attribs[] = { 236 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 237 EGL_RECORDABLE_ANDROID, EGL_TRUE, 238 EGL_NONE 239 }; 240 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 241 if (err) { 242 // maybe we failed because of EGL_RECORDABLE_ANDROID 243 ALOGW("couldn't find an EGLConfig with EGL_RECORDABLE_ANDROID"); 244 attribs[2] = EGL_NONE; 245 err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config); 246 } 247 ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format"); 248 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) { 249 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 250 } 251 return config; 252} 253 254EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 255 // Also create our EGLContext 256 EGLint contextAttributes[] = { 257#ifdef EGL_IMG_context_priority 258#ifdef HAS_CONTEXT_PRIORITY 259#warning "using EGL_IMG_context_priority" 260 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 261#endif 262#endif 263 EGL_NONE, EGL_NONE 264 }; 265 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 266 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 267 return ctxt; 268} 269 270void SurfaceFlinger::initializeGL(EGLDisplay display, EGLSurface surface) { 271 EGLBoolean result = eglMakeCurrent(display, surface, surface, mEGLContext); 272 if (!result) { 273 ALOGE("Couldn't create a working GLES context. check logs. exiting..."); 274 exit(0); 275 } 276 277 GLExtensions& extensions(GLExtensions::getInstance()); 278 extensions.initWithGLStrings( 279 glGetString(GL_VENDOR), 280 glGetString(GL_RENDERER), 281 glGetString(GL_VERSION), 282 glGetString(GL_EXTENSIONS), 283 eglQueryString(display, EGL_VENDOR), 284 eglQueryString(display, EGL_VERSION), 285 eglQueryString(display, EGL_EXTENSIONS)); 286 287 EGLint w, h; 288 eglQuerySurface(display, surface, EGL_WIDTH, &w); 289 eglQuerySurface(display, surface, EGL_HEIGHT, &h); 290 291 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 292 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 293 294 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 295 glPixelStorei(GL_PACK_ALIGNMENT, 4); 296 glEnableClientState(GL_VERTEX_ARRAY); 297 glShadeModel(GL_FLAT); 298 glDisable(GL_DITHER); 299 glDisable(GL_CULL_FACE); 300 301 struct pack565 { 302 inline uint16_t operator() (int r, int g, int b) const { 303 return (r<<11)|(g<<5)|b; 304 } 305 } pack565; 306 307 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 308 glGenTextures(1, &mProtectedTexName); 309 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 310 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 311 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 312 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 313 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 314 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 315 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 316 317 glViewport(0, 0, w, h); 318 glMatrixMode(GL_PROJECTION); 319 glLoadIdentity(); 320 // put the origin in the left-bottom corner 321 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 322 323 // print some debugging info 324 EGLint r,g,b,a; 325 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 326 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 327 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 328 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 329 ALOGI("EGL informations:"); 330 ALOGI("vendor : %s", extensions.getEglVendor()); 331 ALOGI("version : %s", extensions.getEglVersion()); 332 ALOGI("extensions: %s", extensions.getEglExtension()); 333 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 334 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 335 ALOGI("OpenGL ES informations:"); 336 ALOGI("vendor : %s", extensions.getVendor()); 337 ALOGI("renderer : %s", extensions.getRenderer()); 338 ALOGI("version : %s", extensions.getVersion()); 339 ALOGI("extensions: %s", extensions.getExtension()); 340 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 341 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 342} 343 344status_t SurfaceFlinger::readyToRun() 345{ 346 ALOGI( "SurfaceFlinger's main thread ready to run. " 347 "Initializing graphics H/W..."); 348 349 // initialize EGL 350 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 351 eglInitialize(mEGLDisplay, NULL, NULL); 352 353 // Initialize the main display 354 // create native window to main display 355 sp<FramebufferSurface> fbs = FramebufferSurface::create(); 356 if (fbs == NULL) { 357 ALOGE("Display subsystem failed to initialize. check logs. exiting..."); 358 exit(0); 359 } 360 361 sp<SurfaceTextureClient> stc(new SurfaceTextureClient(static_cast<sp<ISurfaceTexture> >(fbs->getBufferQueue()))); 362 363 // initialize the config and context 364 int format; 365 ANativeWindow* const anw = stc.get(); 366 anw->query(anw, NATIVE_WINDOW_FORMAT, &format); 367 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 368 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 369 370 // initialize our main display hardware 371 mCurrentState.displays.add(DisplayDevice::DISPLAY_ID_MAIN, DisplayDeviceState()); 372 sp<DisplayDevice> hw = new DisplayDevice(this, DisplayDevice::DISPLAY_ID_MAIN, anw, fbs, mEGLConfig); 373 mDisplays.add(DisplayDevice::DISPLAY_ID_MAIN, hw); 374 375 // initialize OpenGL ES 376 EGLSurface surface = hw->getEGLSurface(); 377 initializeGL(mEGLDisplay, surface); 378 379 // start the EventThread 380 mEventThread = new EventThread(this); 381 mEventQueue.setEventThread(mEventThread); 382 383 // initialize the H/W composer 384 mHwc = new HWComposer(this, *static_cast<HWComposer::EventHandler *>(this)); 385 386 // initialize our drawing state 387 mDrawingState = mCurrentState; 388 389 // We're now ready to accept clients... 390 mReadyToRunBarrier.open(); 391 392 // start boot animation 393 startBootAnim(); 394 395 return NO_ERROR; 396} 397 398void SurfaceFlinger::startBootAnim() { 399 // start boot animation 400 property_set("service.bootanim.exit", "0"); 401 property_set("ctl.start", "bootanim"); 402} 403 404uint32_t SurfaceFlinger::getMaxTextureSize() const { 405 return mMaxTextureSize; 406} 407 408uint32_t SurfaceFlinger::getMaxViewportDims() const { 409 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 410 mMaxViewportDims[0] : mMaxViewportDims[1]; 411} 412 413// ---------------------------------------------------------------------------- 414 415bool SurfaceFlinger::authenticateSurfaceTexture( 416 const sp<ISurfaceTexture>& surfaceTexture) const { 417 Mutex::Autolock _l(mStateLock); 418 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 419 420 // Check the visible layer list for the ISurface 421 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 422 size_t count = currentLayers.size(); 423 for (size_t i=0 ; i<count ; i++) { 424 const sp<LayerBase>& layer(currentLayers[i]); 425 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 426 if (lbc != NULL) { 427 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 428 if (lbcBinder == surfaceTextureBinder) { 429 return true; 430 } 431 } 432 } 433 434 // Check the layers in the purgatory. This check is here so that if a 435 // SurfaceTexture gets destroyed before all the clients are done using it, 436 // the error will not be reported as "surface XYZ is not authenticated", but 437 // will instead fail later on when the client tries to use the surface, 438 // which should be reported as "surface XYZ returned an -ENODEV". The 439 // purgatorized layers are no less authentic than the visible ones, so this 440 // should not cause any harm. 441 size_t purgatorySize = mLayerPurgatory.size(); 442 for (size_t i=0 ; i<purgatorySize ; i++) { 443 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 444 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 445 if (lbc != NULL) { 446 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 447 if (lbcBinder == surfaceTextureBinder) { 448 return true; 449 } 450 } 451 } 452 453 return false; 454} 455 456status_t SurfaceFlinger::getDisplayInfo(DisplayID dpy, DisplayInfo* info) { 457 // TODO: this is here only for compatibility -- should go away eventually. 458 if (uint32_t(dpy) >= 1) { 459 return BAD_INDEX; 460 } 461 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 462 info->w = hw->getWidth(); 463 info->h = hw->getHeight(); 464 info->xdpi = hw->getDpiX(); 465 info->ydpi = hw->getDpiY(); 466 info->fps = float(1e9 / getHwComposer().getRefreshPeriod()); 467 info->density = hw->getDensity(); 468 info->orientation = hw->getOrientation(); 469 // TODO: this needs to go away (currently needed only by webkit) 470 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 471 return NO_ERROR; 472} 473 474// ---------------------------------------------------------------------------- 475 476sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 477 return mEventThread->createEventConnection(); 478} 479 480void SurfaceFlinger::connectDisplay(const sp<ISurfaceTexture> display) { 481 EGLSurface result = EGL_NO_SURFACE; 482 EGLSurface old_surface = EGL_NO_SURFACE; 483 sp<SurfaceTextureClient> stc; 484 485 if (display != NULL) { 486 stc = new SurfaceTextureClient(display); 487 result = eglCreateWindowSurface(mEGLDisplay, 488 mEGLConfig, (EGLNativeWindowType)stc.get(), NULL); 489 ALOGE_IF(result == EGL_NO_SURFACE, 490 "eglCreateWindowSurface failed (ISurfaceTexture=%p)", 491 display.get()); 492 } 493 494 { // scope for the lock 495 Mutex::Autolock _l(mStateLock); 496 old_surface = mExternalDisplaySurface; 497 mExternalDisplayNativeWindow = stc; 498 mExternalDisplaySurface = result; 499 ALOGD("mExternalDisplaySurface = %p", result); 500 } 501 502 if (old_surface != EGL_NO_SURFACE) { 503 // Note: EGL allows to destroy an object while its current 504 // it will fail to become current next time though. 505 eglDestroySurface(mEGLDisplay, old_surface); 506 } 507} 508 509EGLSurface SurfaceFlinger::getExternalDisplaySurface() const { 510 Mutex::Autolock _l(mStateLock); 511 return mExternalDisplaySurface; 512} 513 514// ---------------------------------------------------------------------------- 515 516void SurfaceFlinger::waitForEvent() { 517 mEventQueue.waitMessage(); 518} 519 520void SurfaceFlinger::signalTransaction() { 521 mEventQueue.invalidate(); 522} 523 524void SurfaceFlinger::signalLayerUpdate() { 525 mEventQueue.invalidate(); 526} 527 528void SurfaceFlinger::signalRefresh() { 529 mEventQueue.refresh(); 530} 531 532status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 533 nsecs_t reltime, uint32_t flags) { 534 return mEventQueue.postMessage(msg, reltime); 535} 536 537status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 538 nsecs_t reltime, uint32_t flags) { 539 status_t res = mEventQueue.postMessage(msg, reltime); 540 if (res == NO_ERROR) { 541 msg->wait(); 542 } 543 return res; 544} 545 546bool SurfaceFlinger::threadLoop() { 547 waitForEvent(); 548 return true; 549} 550 551void SurfaceFlinger::onVSyncReceived(int dpy, nsecs_t timestamp) { 552 mEventThread->onVSyncReceived(dpy, timestamp); 553} 554 555void SurfaceFlinger::eventControl(int event, int enabled) { 556 getHwComposer().eventControl(event, enabled); 557} 558 559void SurfaceFlinger::onMessageReceived(int32_t what) { 560 ATRACE_CALL(); 561 switch (what) { 562 case MessageQueue::INVALIDATE: 563 handleMessageTransaction(); 564 handleMessageInvalidate(); 565 signalRefresh(); 566 break; 567 case MessageQueue::REFRESH: 568 handleMessageRefresh(); 569 break; 570 } 571} 572 573void SurfaceFlinger::handleMessageTransaction() { 574 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 575 uint32_t transactionFlags = peekTransactionFlags(mask); 576 if (transactionFlags) { 577 handleTransaction(transactionFlags); 578 } 579} 580 581void SurfaceFlinger::handleMessageInvalidate() { 582 handlePageFlip(); 583} 584 585void SurfaceFlinger::handleMessageRefresh() { 586 handleRefresh(); 587 588 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 589 mVisibleRegionsDirty = false; 590 invalidateHwcGeometry(); 591 592 /* 593 * rebuild the visible layer list per screen 594 */ 595 596 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 597 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 598 const sp<DisplayDevice>& hw(mDisplays[dpy]); 599 Region opaqueRegion; 600 Region dirtyRegion; 601 computeVisibleRegions(currentLayers, 602 hw->getLayerStack(), dirtyRegion, opaqueRegion); 603 hw->dirtyRegion.orSelf(dirtyRegion); 604 605 Vector< sp<LayerBase> > layersSortedByZ; 606 const size_t count = currentLayers.size(); 607 for (size_t i=0 ; i<count ; i++) { 608 const Layer::State& s(currentLayers[i]->drawingState()); 609 if (s.layerStack == hw->getLayerStack()) { 610 if (!currentLayers[i]->visibleRegion.isEmpty()) { 611 layersSortedByZ.add(currentLayers[i]); 612 } 613 } 614 } 615 hw->setVisibleLayersSortedByZ(layersSortedByZ); 616 hw->undefinedRegion.set(hw->getBounds()); 617 hw->undefinedRegion.subtractSelf(hw->getTransform().transform(opaqueRegion)); 618 } 619 } 620 621 HWComposer& hwc(getHwComposer()); 622 if (hwc.initCheck() == NO_ERROR) { 623 // build the h/w work list 624 const bool workListsDirty = mHwWorkListDirty; 625 mHwWorkListDirty = false; 626 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 627 sp<const DisplayDevice> hw(mDisplays[dpy]); 628 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 629 const size_t count = currentLayers.size(); 630 631 const int32_t id = hw->getDisplayId(); 632 if (hwc.createWorkList(id, count) >= 0) { 633 HWComposer::LayerListIterator cur = hwc.begin(id); 634 const HWComposer::LayerListIterator end = hwc.end(id); 635 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 636 const sp<LayerBase>& layer(currentLayers[i]); 637 638 if (CC_UNLIKELY(workListsDirty)) { 639 layer->setGeometry(hw, *cur); 640 if (mDebugDisableHWC || mDebugRegion) { 641 cur->setSkip(true); 642 } 643 } 644 645 /* 646 * update the per-frame h/w composer data for each layer 647 * and build the transparent region of the FB 648 */ 649 layer->setPerFrameData(hw, *cur); 650 } 651 } 652 } 653 status_t err = hwc.prepare(); 654 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 655 } 656 657 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 658 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 659 const sp<DisplayDevice>& hw(mDisplays[dpy]); 660 661 // transform the dirty region into this screen's coordinate space 662 const Transform& planeTransform(hw->getTransform()); 663 Region dirtyRegion; 664 if (repaintEverything) { 665 dirtyRegion.set(hw->bounds()); 666 } else { 667 dirtyRegion = planeTransform.transform(hw->dirtyRegion); 668 dirtyRegion.andSelf(hw->bounds()); 669 } 670 hw->dirtyRegion.clear(); 671 672 if (!dirtyRegion.isEmpty()) { 673 if (hw->canDraw()) { 674 // repaint the framebuffer (if needed) 675 handleRepaint(hw, dirtyRegion); 676 } 677 } 678 // inform the h/w that we're done compositing 679 hw->compositionComplete(); 680 } 681 682 postFramebuffer(); 683 684 685#if 1 686 // render to the external display if we have one 687 EGLSurface externalDisplaySurface = getExternalDisplaySurface(); 688 if (externalDisplaySurface != EGL_NO_SURFACE) { 689 EGLSurface cur = eglGetCurrentSurface(EGL_DRAW); 690 EGLBoolean success = eglMakeCurrent(eglGetCurrentDisplay(), 691 externalDisplaySurface, externalDisplaySurface, 692 eglGetCurrentContext()); 693 694 ALOGE_IF(!success, "eglMakeCurrent -> external failed"); 695 696 if (success) { 697 // redraw the screen entirely... 698 glDisable(GL_TEXTURE_EXTERNAL_OES); 699 glDisable(GL_TEXTURE_2D); 700 glClearColor(0,0,0,1); 701 glClear(GL_COLOR_BUFFER_BIT); 702 glMatrixMode(GL_MODELVIEW); 703 glLoadIdentity(); 704 705 const sp<DisplayDevice>& hw(getDisplayDevice(0)); 706 const Vector< sp<LayerBase> >& layers( hw->getVisibleLayersSortedByZ() ); 707 const size_t count = layers.size(); 708 for (size_t i=0 ; i<count ; ++i) { 709 const sp<LayerBase>& layer(layers[i]); 710 layer->draw(hw); 711 } 712 713 success = eglSwapBuffers(eglGetCurrentDisplay(), externalDisplaySurface); 714 ALOGE_IF(!success, "external display eglSwapBuffers failed"); 715 716 hw->compositionComplete(); 717 } 718 719 success = eglMakeCurrent(eglGetCurrentDisplay(), 720 cur, cur, eglGetCurrentContext()); 721 722 ALOGE_IF(!success, "eglMakeCurrent -> internal failed"); 723 } 724#endif 725 726} 727 728void SurfaceFlinger::postFramebuffer() 729{ 730 ATRACE_CALL(); 731 732 const nsecs_t now = systemTime(); 733 mDebugInSwapBuffers = now; 734 735 HWComposer& hwc(getHwComposer()); 736 737 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 738 const sp<DisplayDevice>& hw(mDisplays[dpy]); 739 if (hwc.initCheck() == NO_ERROR) { 740 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 741 const size_t count = currentLayers.size(); 742 const int32_t id = hw->getDisplayId(); 743 HWComposer::LayerListIterator cur = hwc.begin(id); 744 const HWComposer::LayerListIterator end = hwc.end(id); 745 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 746 const sp<LayerBase>& layer(currentLayers[i]); 747 layer->setAcquireFence(hw, *cur); 748 } 749 } 750 hw->flip(hw->swapRegion); 751 hw->swapRegion.clear(); 752 } 753 754 if (hwc.initCheck() == NO_ERROR) { 755 // FIXME: eventually commit() won't take arguments 756 hwc.commit(mEGLDisplay, getDefaultDisplayDevice()->getEGLSurface()); 757 } 758 759 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 760 sp<const DisplayDevice> hw(mDisplays[dpy]); 761 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 762 const size_t count = currentLayers.size(); 763 if (hwc.initCheck() == NO_ERROR) { 764 int32_t id = hw->getDisplayId(); 765 HWComposer::LayerListIterator cur = hwc.begin(id); 766 const HWComposer::LayerListIterator end = hwc.end(id); 767 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 768 currentLayers[i]->onLayerDisplayed(hw, &*cur); 769 } 770 } else { 771 eglSwapBuffers(mEGLDisplay, hw->getEGLSurface()); 772 for (size_t i = 0; i < count; i++) { 773 currentLayers[i]->onLayerDisplayed(hw, NULL); 774 } 775 } 776 777 // FIXME: we need to call eglSwapBuffers() on displays that have GL composition 778 } 779 780 mLastSwapBufferTime = systemTime() - now; 781 mDebugInSwapBuffers = 0; 782} 783 784void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 785{ 786 ATRACE_CALL(); 787 788 Mutex::Autolock _l(mStateLock); 789 const nsecs_t now = systemTime(); 790 mDebugInTransaction = now; 791 792 // Here we're guaranteed that some transaction flags are set 793 // so we can call handleTransactionLocked() unconditionally. 794 // We call getTransactionFlags(), which will also clear the flags, 795 // with mStateLock held to guarantee that mCurrentState won't change 796 // until the transaction is committed. 797 798 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 799 transactionFlags = getTransactionFlags(mask); 800 handleTransactionLocked(transactionFlags); 801 802 mLastTransactionTime = systemTime() - now; 803 mDebugInTransaction = 0; 804 invalidateHwcGeometry(); 805 // here the transaction has been committed 806} 807 808void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 809{ 810 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 811 const size_t count = currentLayers.size(); 812 813 /* 814 * Traversal of the children 815 * (perform the transaction for each of them if needed) 816 */ 817 818 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 819 if (layersNeedTransaction) { 820 for (size_t i=0 ; i<count ; i++) { 821 const sp<LayerBase>& layer = currentLayers[i]; 822 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 823 if (!trFlags) continue; 824 825 const uint32_t flags = layer->doTransaction(0); 826 if (flags & Layer::eVisibleRegion) 827 mVisibleRegionsDirty = true; 828 } 829 } 830 831 /* 832 * Perform our own transaction if needed 833 */ 834 835 if (transactionFlags & eTransactionNeeded) { 836 // here we take advantage of Vector's copy-on-write semantics to 837 // improve performance by skipping the transaction entirely when 838 // know that the lists are identical 839 const KeyedVector<int32_t, DisplayDeviceState>& curr(mCurrentState.displays); 840 const KeyedVector<int32_t, DisplayDeviceState>& draw(mDrawingState.displays); 841 if (!curr.isIdenticalTo(draw)) { 842 mVisibleRegionsDirty = true; 843 const size_t cc = curr.size(); 844 const size_t dc = draw.size(); 845 846 // find the displays that were removed 847 // (ie: in drawing state but not in current state) 848 // also handle displays that changed 849 // (ie: displays that are in both lists) 850 for (size_t i=0 ; i<dc ; i++) { 851 if (curr.indexOfKey(draw[i].id) < 0) { 852 // in drawing state but not in current state 853 if (draw[i].id != DisplayDevice::DISPLAY_ID_MAIN) { 854 mDisplays.removeItem(draw[i].id); 855 } else { 856 ALOGW("trying to remove the main display"); 857 } 858 } else { 859 // this display is in both lists. see if something changed. 860 const DisplayDeviceState& state(curr[i]); 861 if (state.layerStack != draw[i].layerStack) { 862 const sp<DisplayDevice>& disp(getDisplayDevice(state.id)); 863 disp->setLayerStack(state.layerStack); 864 } 865 if (curr[i].orientation != draw[i].orientation) { 866 const sp<DisplayDevice>& disp(getDisplayDevice(state.id)); 867 disp->setOrientation(state.orientation); 868 } 869 } 870 } 871 872 // find displays that were added 873 // (ie: in current state but not in drawing state) 874 for (size_t i=0 ; i<cc ; i++) { 875 if (mDrawingState.displays.indexOfKey(curr[i].id) < 0) { 876 // FIXME: we need to pass the surface here 877 sp<DisplayDevice> disp = new DisplayDevice(this, curr[i].id, 0, 0, mEGLConfig); 878 mDisplays.add(curr[i].id, disp); 879 } 880 } 881 } 882 883 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 884 // layers have been added 885 mVisibleRegionsDirty = true; 886 } 887 888 // some layers might have been removed, so 889 // we need to update the regions they're exposing. 890 if (mLayersRemoved) { 891 mLayersRemoved = false; 892 mVisibleRegionsDirty = true; 893 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 894 const size_t count = previousLayers.size(); 895 for (size_t i=0 ; i<count ; i++) { 896 const sp<LayerBase>& layer(previousLayers[i]); 897 if (currentLayers.indexOf(layer) < 0) { 898 // this layer is not visible anymore 899 // TODO: we could traverse the tree from front to back and 900 // compute the actual visible region 901 // TODO: we could cache the transformed region 902 Layer::State front(layer->drawingState()); 903 Region visibleReg = front.transform.transform( 904 Region(Rect(front.active.w, front.active.h))); 905 invalidateLayerStack(front.layerStack, visibleReg); 906 } 907 } 908 } 909 } 910 911 commitTransaction(); 912} 913 914void SurfaceFlinger::commitTransaction() 915{ 916 if (!mLayersPendingRemoval.isEmpty()) { 917 // Notify removed layers now that they can't be drawn from 918 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 919 mLayersPendingRemoval[i]->onRemoved(); 920 } 921 mLayersPendingRemoval.clear(); 922 } 923 924 mDrawingState = mCurrentState; 925 mTransationPending = false; 926 mTransactionCV.broadcast(); 927} 928 929void SurfaceFlinger::computeVisibleRegions( 930 const LayerVector& currentLayers, uint32_t layerStack, 931 Region& outDirtyRegion, Region& outOpaqueRegion) 932{ 933 ATRACE_CALL(); 934 935 Region aboveOpaqueLayers; 936 Region aboveCoveredLayers; 937 Region dirty; 938 939 outDirtyRegion.clear(); 940 941 size_t i = currentLayers.size(); 942 while (i--) { 943 const sp<LayerBase>& layer = currentLayers[i]; 944 945 // start with the whole surface at its current location 946 const Layer::State& s(layer->drawingState()); 947 948 // only consider the layers on the given later stack 949 if (s.layerStack != layerStack) 950 continue; 951 952 /* 953 * opaqueRegion: area of a surface that is fully opaque. 954 */ 955 Region opaqueRegion; 956 957 /* 958 * visibleRegion: area of a surface that is visible on screen 959 * and not fully transparent. This is essentially the layer's 960 * footprint minus the opaque regions above it. 961 * Areas covered by a translucent surface are considered visible. 962 */ 963 Region visibleRegion; 964 965 /* 966 * coveredRegion: area of a surface that is covered by all 967 * visible regions above it (which includes the translucent areas). 968 */ 969 Region coveredRegion; 970 971 972 // handle hidden surfaces by setting the visible region to empty 973 if (CC_LIKELY(!(s.flags & layer_state_t::eLayerHidden) && s.alpha)) { 974 const bool translucent = !layer->isOpaque(); 975 Rect bounds(layer->computeBounds()); 976 visibleRegion.set(bounds); 977 if (!visibleRegion.isEmpty()) { 978 // Remove the transparent area from the visible region 979 if (translucent) { 980 Region transparentRegionScreen; 981 const Transform tr(s.transform); 982 if (tr.transformed()) { 983 if (tr.preserveRects()) { 984 // transform the transparent region 985 transparentRegionScreen = tr.transform(s.transparentRegion); 986 } else { 987 // transformation too complex, can't do the 988 // transparent region optimization. 989 transparentRegionScreen.clear(); 990 } 991 } else { 992 transparentRegionScreen = s.transparentRegion; 993 } 994 visibleRegion.subtractSelf(transparentRegionScreen); 995 } 996 997 // compute the opaque region 998 const int32_t layerOrientation = s.transform.getOrientation(); 999 if (s.alpha==255 && !translucent && 1000 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1001 // the opaque region is the layer's footprint 1002 opaqueRegion = visibleRegion; 1003 } 1004 } 1005 } 1006 1007 // Clip the covered region to the visible region 1008 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1009 1010 // Update aboveCoveredLayers for next (lower) layer 1011 aboveCoveredLayers.orSelf(visibleRegion); 1012 1013 // subtract the opaque region covered by the layers above us 1014 visibleRegion.subtractSelf(aboveOpaqueLayers); 1015 1016 // compute this layer's dirty region 1017 if (layer->contentDirty) { 1018 // we need to invalidate the whole region 1019 dirty = visibleRegion; 1020 // as well, as the old visible region 1021 dirty.orSelf(layer->visibleRegion); 1022 layer->contentDirty = false; 1023 } else { 1024 /* compute the exposed region: 1025 * the exposed region consists of two components: 1026 * 1) what's VISIBLE now and was COVERED before 1027 * 2) what's EXPOSED now less what was EXPOSED before 1028 * 1029 * note that (1) is conservative, we start with the whole 1030 * visible region but only keep what used to be covered by 1031 * something -- which mean it may have been exposed. 1032 * 1033 * (2) handles areas that were not covered by anything but got 1034 * exposed because of a resize. 1035 */ 1036 const Region newExposed = visibleRegion - coveredRegion; 1037 const Region oldVisibleRegion = layer->visibleRegion; 1038 const Region oldCoveredRegion = layer->coveredRegion; 1039 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1040 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1041 } 1042 dirty.subtractSelf(aboveOpaqueLayers); 1043 1044 // accumulate to the screen dirty region 1045 outDirtyRegion.orSelf(dirty); 1046 1047 // Update aboveOpaqueLayers for next (lower) layer 1048 aboveOpaqueLayers.orSelf(opaqueRegion); 1049 1050 // Store the visible region is screen space 1051 layer->setVisibleRegion(visibleRegion); 1052 layer->setCoveredRegion(coveredRegion); 1053 } 1054 1055 outOpaqueRegion = aboveOpaqueLayers; 1056} 1057 1058void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1059 const Region& dirty) { 1060 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1061 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1062 if (hw->getLayerStack() == layerStack) { 1063 hw->dirtyRegion.orSelf(dirty); 1064 } 1065 } 1066} 1067 1068void SurfaceFlinger::handlePageFlip() 1069{ 1070 ATRACE_CALL(); 1071 Region dirtyRegion; 1072 1073 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1074 1075 bool visibleRegions = false; 1076 const size_t count = currentLayers.size(); 1077 sp<LayerBase> const* layers = currentLayers.array(); 1078 for (size_t i=0 ; i<count ; i++) { 1079 const sp<LayerBase>& layer(layers[i]); 1080 const Region dirty(layer->latchBuffer(visibleRegions)); 1081 Layer::State s(layer->drawingState()); 1082 invalidateLayerStack(s.layerStack, dirty); 1083 } 1084 1085 mVisibleRegionsDirty |= visibleRegions; 1086} 1087 1088void SurfaceFlinger::invalidateHwcGeometry() 1089{ 1090 mHwWorkListDirty = true; 1091} 1092 1093void SurfaceFlinger::handleRefresh() 1094{ 1095 bool needInvalidate = false; 1096 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1097 const size_t count = currentLayers.size(); 1098 for (size_t i=0 ; i<count ; i++) { 1099 const sp<LayerBase>& layer(currentLayers[i]); 1100 if (layer->onPreComposition()) { 1101 needInvalidate = true; 1102 } 1103 } 1104 if (needInvalidate) { 1105 signalLayerUpdate(); 1106 } 1107} 1108 1109void SurfaceFlinger::handleRepaint(const sp<const DisplayDevice>& hw, 1110 const Region& inDirtyRegion) 1111{ 1112 ATRACE_CALL(); 1113 1114 Region dirtyRegion(inDirtyRegion); 1115 1116 // compute the invalid region 1117 hw->swapRegion.orSelf(dirtyRegion); 1118 1119 if (CC_UNLIKELY(mDebugRegion)) { 1120 debugFlashRegions(hw, dirtyRegion); 1121 } 1122 1123 uint32_t flags = hw->getFlags(); 1124 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1125 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1126 // takes a rectangle, we must make sure to update that whole 1127 // rectangle in that case 1128 dirtyRegion.set(hw->swapRegion.bounds()); 1129 } else { 1130 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1131 // We need to redraw the rectangle that will be updated 1132 // (pushed to the framebuffer). 1133 // This is needed because PARTIAL_UPDATES only takes one 1134 // rectangle instead of a region (see DisplayDevice::flip()) 1135 dirtyRegion.set(hw->swapRegion.bounds()); 1136 } else { 1137 // we need to redraw everything (the whole screen) 1138 dirtyRegion.set(hw->bounds()); 1139 hw->swapRegion = dirtyRegion; 1140 } 1141 } 1142 1143 composeSurfaces(hw, dirtyRegion); 1144 1145 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1146 const size_t count = currentLayers.size(); 1147 for (size_t i=0 ; i<count ; i++) { 1148 currentLayers[i]->onPostComposition(); 1149 } 1150 1151 // update the swap region and clear the dirty region 1152 hw->swapRegion.orSelf(dirtyRegion); 1153} 1154 1155void SurfaceFlinger::composeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1156{ 1157 HWComposer& hwc(getHwComposer()); 1158 int32_t id = hw->getDisplayId(); 1159 HWComposer::LayerListIterator cur = hwc.begin(id); 1160 const HWComposer::LayerListIterator end = hwc.end(id); 1161 1162 const size_t fbLayerCount = hwc.getLayerCount(id, HWC_FRAMEBUFFER); 1163 if (cur==end || fbLayerCount) { 1164 1165 DisplayDevice::makeCurrent(hw, mEGLContext); 1166 1167 // set the frame buffer 1168 glMatrixMode(GL_MODELVIEW); 1169 glLoadIdentity(); 1170 1171 // Never touch the framebuffer if we don't have any framebuffer layers 1172 if (hwc.getLayerCount(id, HWC_OVERLAY)) { 1173 // when using overlays, we assume a fully transparent framebuffer 1174 // NOTE: we could reduce how much we need to clear, for instance 1175 // remove where there are opaque FB layers. however, on some 1176 // GPUs doing a "clean slate" glClear might be more efficient. 1177 // We'll revisit later if needed. 1178 glClearColor(0, 0, 0, 0); 1179 glClear(GL_COLOR_BUFFER_BIT); 1180 } else { 1181 const Region region(hw->undefinedRegion.intersect(dirty)); 1182 // screen is already cleared here 1183 if (!region.isEmpty()) { 1184 // can happen with SurfaceView 1185 drawWormhole(region); 1186 } 1187 } 1188 1189 /* 1190 * and then, render the layers targeted at the framebuffer 1191 */ 1192 1193 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1194 const size_t count = layers.size(); 1195 const Transform& tr = hw->getTransform(); 1196 for (size_t i=0 ; i<count ; ++i) { 1197 const sp<LayerBase>& layer(layers[i]); 1198 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1199 if (!clip.isEmpty()) { 1200 if (cur != end && cur->getCompositionType() == HWC_OVERLAY) { 1201 if (i && (cur->getHints() & HWC_HINT_CLEAR_FB) 1202 && layer->isOpaque()) { 1203 // never clear the very first layer since we're 1204 // guaranteed the FB is already cleared 1205 layer->clearWithOpenGL(hw, clip); 1206 } 1207 ++cur; 1208 continue; 1209 } 1210 // render the layer 1211 layer->draw(hw, clip); 1212 } 1213 if (cur != end) { 1214 ++cur; 1215 } 1216 } 1217 } 1218} 1219 1220void SurfaceFlinger::debugFlashRegions(const sp<const DisplayDevice>& hw, 1221 const Region& dirtyRegion) 1222{ 1223 const uint32_t flags = hw->getFlags(); 1224 const int32_t height = hw->getHeight(); 1225 if (hw->swapRegion.isEmpty()) { 1226 return; 1227 } 1228 1229 if (!(flags & DisplayDevice::SWAP_RECTANGLE)) { 1230 const Region repaint((flags & DisplayDevice::PARTIAL_UPDATES) ? 1231 dirtyRegion.bounds() : hw->bounds()); 1232 composeSurfaces(hw, repaint); 1233 } 1234 1235 glDisable(GL_TEXTURE_EXTERNAL_OES); 1236 glDisable(GL_TEXTURE_2D); 1237 glDisable(GL_BLEND); 1238 1239 static int toggle = 0; 1240 toggle = 1 - toggle; 1241 if (toggle) { 1242 glColor4f(1, 0, 1, 1); 1243 } else { 1244 glColor4f(1, 1, 0, 1); 1245 } 1246 1247 Region::const_iterator it = dirtyRegion.begin(); 1248 Region::const_iterator const end = dirtyRegion.end(); 1249 while (it != end) { 1250 const Rect& r = *it++; 1251 GLfloat vertices[][2] = { 1252 { r.left, height - r.top }, 1253 { r.left, height - r.bottom }, 1254 { r.right, height - r.bottom }, 1255 { r.right, height - r.top } 1256 }; 1257 glVertexPointer(2, GL_FLOAT, 0, vertices); 1258 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1259 } 1260 1261 hw->flip(hw->swapRegion); 1262 1263 if (mDebugRegion > 1) 1264 usleep(mDebugRegion * 1000); 1265} 1266 1267void SurfaceFlinger::drawWormhole(const Region& region) const 1268{ 1269 glDisable(GL_TEXTURE_EXTERNAL_OES); 1270 glDisable(GL_TEXTURE_2D); 1271 glDisable(GL_BLEND); 1272 glColor4f(0,0,0,0); 1273 1274 GLfloat vertices[4][2]; 1275 glVertexPointer(2, GL_FLOAT, 0, vertices); 1276 Region::const_iterator it = region.begin(); 1277 Region::const_iterator const end = region.end(); 1278 while (it != end) { 1279 const Rect& r = *it++; 1280 vertices[0][0] = r.left; 1281 vertices[0][1] = r.top; 1282 vertices[1][0] = r.right; 1283 vertices[1][1] = r.top; 1284 vertices[2][0] = r.right; 1285 vertices[2][1] = r.bottom; 1286 vertices[3][0] = r.left; 1287 vertices[3][1] = r.bottom; 1288 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1289 } 1290} 1291 1292ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1293 const sp<LayerBaseClient>& lbc) 1294{ 1295 // attach this layer to the client 1296 size_t name = client->attachLayer(lbc); 1297 1298 // add this layer to the current state list 1299 Mutex::Autolock _l(mStateLock); 1300 mCurrentState.layersSortedByZ.add(lbc); 1301 1302 return ssize_t(name); 1303} 1304 1305status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1306{ 1307 Mutex::Autolock _l(mStateLock); 1308 status_t err = purgatorizeLayer_l(layer); 1309 if (err == NO_ERROR) 1310 setTransactionFlags(eTransactionNeeded); 1311 return err; 1312} 1313 1314status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1315{ 1316 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1317 if (index >= 0) { 1318 mLayersRemoved = true; 1319 return NO_ERROR; 1320 } 1321 return status_t(index); 1322} 1323 1324status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1325{ 1326 // First add the layer to the purgatory list, which makes sure it won't 1327 // go away, then remove it from the main list (through a transaction). 1328 ssize_t err = removeLayer_l(layerBase); 1329 if (err >= 0) { 1330 mLayerPurgatory.add(layerBase); 1331 } 1332 1333 mLayersPendingRemoval.push(layerBase); 1334 1335 // it's possible that we don't find a layer, because it might 1336 // have been destroyed already -- this is not technically an error 1337 // from the user because there is a race between Client::destroySurface(), 1338 // ~Client() and ~ISurface(). 1339 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1340} 1341 1342uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1343{ 1344 return android_atomic_release_load(&mTransactionFlags); 1345} 1346 1347uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1348{ 1349 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1350} 1351 1352uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1353{ 1354 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1355 if ((old & flags)==0) { // wake the server up 1356 signalTransaction(); 1357 } 1358 return old; 1359} 1360 1361 1362void SurfaceFlinger::setTransactionState( 1363 const Vector<ComposerState>& state, 1364 const Vector<DisplayState>& displays, 1365 uint32_t flags) 1366{ 1367 Mutex::Autolock _l(mStateLock); 1368 1369 int orientation = DisplayState::eOrientationUnchanged; 1370 if (displays.size()) { 1371 // TODO: handle all displays 1372 orientation = displays[0].orientation; 1373 } 1374 1375 uint32_t transactionFlags = 0; 1376 // FIXME: don't hardcode display id here 1377 if (mCurrentState.displays.valueFor(0).orientation != orientation) { 1378 if (uint32_t(orientation) <= DisplayState::eOrientation270) { 1379 mCurrentState.displays.editValueFor(0).orientation = orientation; 1380 transactionFlags |= eTransactionNeeded; 1381 } else if (orientation != DisplayState::eOrientationUnchanged) { 1382 ALOGW("setTransactionState: ignoring unrecognized orientation: %d", 1383 orientation); 1384 } 1385 } 1386 1387 const size_t count = state.size(); 1388 for (size_t i=0 ; i<count ; i++) { 1389 const ComposerState& s(state[i]); 1390 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1391 transactionFlags |= setClientStateLocked(client, s.state); 1392 } 1393 1394 if (transactionFlags) { 1395 // this triggers the transaction 1396 setTransactionFlags(transactionFlags); 1397 1398 // if this is a synchronous transaction, wait for it to take effect 1399 // before returning. 1400 if (flags & eSynchronous) { 1401 mTransationPending = true; 1402 } 1403 while (mTransationPending) { 1404 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1405 if (CC_UNLIKELY(err != NO_ERROR)) { 1406 // just in case something goes wrong in SF, return to the 1407 // called after a few seconds. 1408 ALOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1409 mTransationPending = false; 1410 break; 1411 } 1412 } 1413 } 1414} 1415 1416sp<ISurface> SurfaceFlinger::createLayer( 1417 ISurfaceComposerClient::surface_data_t* params, 1418 const String8& name, 1419 const sp<Client>& client, 1420 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1421 uint32_t flags) 1422{ 1423 sp<LayerBaseClient> layer; 1424 sp<ISurface> surfaceHandle; 1425 1426 if (int32_t(w|h) < 0) { 1427 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1428 int(w), int(h)); 1429 return surfaceHandle; 1430 } 1431 1432 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1433 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1434 case ISurfaceComposerClient::eFXSurfaceNormal: 1435 layer = createNormalLayer(client, d, w, h, flags, format); 1436 break; 1437 case ISurfaceComposerClient::eFXSurfaceBlur: 1438 case ISurfaceComposerClient::eFXSurfaceDim: 1439 layer = createDimLayer(client, d, w, h, flags); 1440 break; 1441 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1442 layer = createScreenshotLayer(client, d, w, h, flags); 1443 break; 1444 } 1445 1446 if (layer != 0) { 1447 layer->initStates(w, h, flags); 1448 layer->setName(name); 1449 ssize_t token = addClientLayer(client, layer); 1450 surfaceHandle = layer->getSurface(); 1451 if (surfaceHandle != 0) { 1452 params->token = token; 1453 params->identity = layer->getIdentity(); 1454 } 1455 setTransactionFlags(eTransactionNeeded); 1456 } 1457 1458 return surfaceHandle; 1459} 1460 1461sp<Layer> SurfaceFlinger::createNormalLayer( 1462 const sp<Client>& client, DisplayID display, 1463 uint32_t w, uint32_t h, uint32_t flags, 1464 PixelFormat& format) 1465{ 1466 // initialize the surfaces 1467 switch (format) { 1468 case PIXEL_FORMAT_TRANSPARENT: 1469 case PIXEL_FORMAT_TRANSLUCENT: 1470 format = PIXEL_FORMAT_RGBA_8888; 1471 break; 1472 case PIXEL_FORMAT_OPAQUE: 1473#ifdef NO_RGBX_8888 1474 format = PIXEL_FORMAT_RGB_565; 1475#else 1476 format = PIXEL_FORMAT_RGBX_8888; 1477#endif 1478 break; 1479 } 1480 1481#ifdef NO_RGBX_8888 1482 if (format == PIXEL_FORMAT_RGBX_8888) 1483 format = PIXEL_FORMAT_RGBA_8888; 1484#endif 1485 1486 sp<Layer> layer = new Layer(this, display, client); 1487 status_t err = layer->setBuffers(w, h, format, flags); 1488 if (CC_LIKELY(err != NO_ERROR)) { 1489 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1490 layer.clear(); 1491 } 1492 return layer; 1493} 1494 1495sp<LayerDim> SurfaceFlinger::createDimLayer( 1496 const sp<Client>& client, DisplayID display, 1497 uint32_t w, uint32_t h, uint32_t flags) 1498{ 1499 sp<LayerDim> layer = new LayerDim(this, display, client); 1500 return layer; 1501} 1502 1503sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1504 const sp<Client>& client, DisplayID display, 1505 uint32_t w, uint32_t h, uint32_t flags) 1506{ 1507 sp<LayerScreenshot> layer = new LayerScreenshot(this, display, client); 1508 return layer; 1509} 1510 1511status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 1512{ 1513 /* 1514 * called by the window manager, when a surface should be marked for 1515 * destruction. 1516 * 1517 * The surface is removed from the current and drawing lists, but placed 1518 * in the purgatory queue, so it's not destroyed right-away (we need 1519 * to wait for all client's references to go away first). 1520 */ 1521 1522 status_t err = NAME_NOT_FOUND; 1523 Mutex::Autolock _l(mStateLock); 1524 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1525 1526 if (layer != 0) { 1527 err = purgatorizeLayer_l(layer); 1528 if (err == NO_ERROR) { 1529 setTransactionFlags(eTransactionNeeded); 1530 } 1531 } 1532 return err; 1533} 1534 1535status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 1536{ 1537 // called by ~ISurface() when all references are gone 1538 status_t err = NO_ERROR; 1539 sp<LayerBaseClient> l(layer.promote()); 1540 if (l != NULL) { 1541 Mutex::Autolock _l(mStateLock); 1542 err = removeLayer_l(l); 1543 if (err == NAME_NOT_FOUND) { 1544 // The surface wasn't in the current list, which means it was 1545 // removed already, which means it is in the purgatory, 1546 // and need to be removed from there. 1547 ssize_t idx = mLayerPurgatory.remove(l); 1548 ALOGE_IF(idx < 0, 1549 "layer=%p is not in the purgatory list", l.get()); 1550 } 1551 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1552 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1553 } 1554 return err; 1555} 1556 1557uint32_t SurfaceFlinger::setClientStateLocked( 1558 const sp<Client>& client, 1559 const layer_state_t& s) 1560{ 1561 uint32_t flags = 0; 1562 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1563 if (layer != 0) { 1564 const uint32_t what = s.what; 1565 if (what & layer_state_t::ePositionChanged) { 1566 if (layer->setPosition(s.x, s.y)) 1567 flags |= eTraversalNeeded; 1568 } 1569 if (what & layer_state_t::eLayerChanged) { 1570 // NOTE: index needs to be calculated before we update the state 1571 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1572 if (layer->setLayer(s.z)) { 1573 mCurrentState.layersSortedByZ.removeAt(idx); 1574 mCurrentState.layersSortedByZ.add(layer); 1575 // we need traversal (state changed) 1576 // AND transaction (list changed) 1577 flags |= eTransactionNeeded|eTraversalNeeded; 1578 } 1579 } 1580 if (what & layer_state_t::eSizeChanged) { 1581 if (layer->setSize(s.w, s.h)) { 1582 flags |= eTraversalNeeded; 1583 } 1584 } 1585 if (what & layer_state_t::eAlphaChanged) { 1586 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1587 flags |= eTraversalNeeded; 1588 } 1589 if (what & layer_state_t::eMatrixChanged) { 1590 if (layer->setMatrix(s.matrix)) 1591 flags |= eTraversalNeeded; 1592 } 1593 if (what & layer_state_t::eTransparentRegionChanged) { 1594 if (layer->setTransparentRegionHint(s.transparentRegion)) 1595 flags |= eTraversalNeeded; 1596 } 1597 if (what & layer_state_t::eVisibilityChanged) { 1598 if (layer->setFlags(s.flags, s.mask)) 1599 flags |= eTraversalNeeded; 1600 } 1601 if (what & layer_state_t::eCropChanged) { 1602 if (layer->setCrop(s.crop)) 1603 flags |= eTraversalNeeded; 1604 } 1605 if (what & layer_state_t::eLayerStackChanged) { 1606 // NOTE: index needs to be calculated before we update the state 1607 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1608 if (layer->setLayerStack(s.layerStack)) { 1609 mCurrentState.layersSortedByZ.removeAt(idx); 1610 mCurrentState.layersSortedByZ.add(layer); 1611 // we need traversal (state changed) 1612 // AND transaction (list changed) 1613 flags |= eTransactionNeeded|eTraversalNeeded; 1614 } 1615 } 1616 } 1617 return flags; 1618} 1619 1620// --------------------------------------------------------------------------- 1621 1622void SurfaceFlinger::onScreenAcquired() { 1623 ALOGD("Screen about to return, flinger = %p", this); 1624 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice 1625 getHwComposer().acquire(); 1626 hw->acquireScreen(); 1627 mEventThread->onScreenAcquired(); 1628} 1629 1630void SurfaceFlinger::onScreenReleased() { 1631 ALOGD("About to give-up screen, flinger = %p", this); 1632 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice 1633 if (hw->isScreenAcquired()) { 1634 mEventThread->onScreenReleased(); 1635 hw->releaseScreen(); 1636 getHwComposer().release(); 1637 // from this point on, SF will stop drawing 1638 } 1639} 1640 1641void SurfaceFlinger::unblank() { 1642 class MessageScreenAcquired : public MessageBase { 1643 SurfaceFlinger* flinger; 1644 public: 1645 MessageScreenAcquired(SurfaceFlinger* flinger) : flinger(flinger) { } 1646 virtual bool handler() { 1647 flinger->onScreenAcquired(); 1648 return true; 1649 } 1650 }; 1651 sp<MessageBase> msg = new MessageScreenAcquired(this); 1652 postMessageSync(msg); 1653} 1654 1655void SurfaceFlinger::blank() { 1656 class MessageScreenReleased : public MessageBase { 1657 SurfaceFlinger* flinger; 1658 public: 1659 MessageScreenReleased(SurfaceFlinger* flinger) : flinger(flinger) { } 1660 virtual bool handler() { 1661 flinger->onScreenReleased(); 1662 return true; 1663 } 1664 }; 1665 sp<MessageBase> msg = new MessageScreenReleased(this); 1666 postMessageSync(msg); 1667} 1668 1669// --------------------------------------------------------------------------- 1670 1671status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1672{ 1673 const size_t SIZE = 4096; 1674 char buffer[SIZE]; 1675 String8 result; 1676 1677 if (!PermissionCache::checkCallingPermission(sDump)) { 1678 snprintf(buffer, SIZE, "Permission Denial: " 1679 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1680 IPCThreadState::self()->getCallingPid(), 1681 IPCThreadState::self()->getCallingUid()); 1682 result.append(buffer); 1683 } else { 1684 // Try to get the main lock, but don't insist if we can't 1685 // (this would indicate SF is stuck, but we want to be able to 1686 // print something in dumpsys). 1687 int retry = 3; 1688 while (mStateLock.tryLock()<0 && --retry>=0) { 1689 usleep(1000000); 1690 } 1691 const bool locked(retry >= 0); 1692 if (!locked) { 1693 snprintf(buffer, SIZE, 1694 "SurfaceFlinger appears to be unresponsive, " 1695 "dumping anyways (no locks held)\n"); 1696 result.append(buffer); 1697 } 1698 1699 bool dumpAll = true; 1700 size_t index = 0; 1701 size_t numArgs = args.size(); 1702 if (numArgs) { 1703 if ((index < numArgs) && 1704 (args[index] == String16("--list"))) { 1705 index++; 1706 listLayersLocked(args, index, result, buffer, SIZE); 1707 dumpAll = false; 1708 } 1709 1710 if ((index < numArgs) && 1711 (args[index] == String16("--latency"))) { 1712 index++; 1713 dumpStatsLocked(args, index, result, buffer, SIZE); 1714 dumpAll = false; 1715 } 1716 1717 if ((index < numArgs) && 1718 (args[index] == String16("--latency-clear"))) { 1719 index++; 1720 clearStatsLocked(args, index, result, buffer, SIZE); 1721 dumpAll = false; 1722 } 1723 } 1724 1725 if (dumpAll) { 1726 dumpAllLocked(result, buffer, SIZE); 1727 } 1728 1729 if (locked) { 1730 mStateLock.unlock(); 1731 } 1732 } 1733 write(fd, result.string(), result.size()); 1734 return NO_ERROR; 1735} 1736 1737void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 1738 String8& result, char* buffer, size_t SIZE) const 1739{ 1740 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1741 const size_t count = currentLayers.size(); 1742 for (size_t i=0 ; i<count ; i++) { 1743 const sp<LayerBase>& layer(currentLayers[i]); 1744 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1745 result.append(buffer); 1746 } 1747} 1748 1749void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 1750 String8& result, char* buffer, size_t SIZE) const 1751{ 1752 String8 name; 1753 if (index < args.size()) { 1754 name = String8(args[index]); 1755 index++; 1756 } 1757 1758 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1759 const size_t count = currentLayers.size(); 1760 for (size_t i=0 ; i<count ; i++) { 1761 const sp<LayerBase>& layer(currentLayers[i]); 1762 if (name.isEmpty()) { 1763 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1764 result.append(buffer); 1765 } 1766 if (name.isEmpty() || (name == layer->getName())) { 1767 layer->dumpStats(result, buffer, SIZE); 1768 } 1769 } 1770} 1771 1772void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 1773 String8& result, char* buffer, size_t SIZE) const 1774{ 1775 String8 name; 1776 if (index < args.size()) { 1777 name = String8(args[index]); 1778 index++; 1779 } 1780 1781 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1782 const size_t count = currentLayers.size(); 1783 for (size_t i=0 ; i<count ; i++) { 1784 const sp<LayerBase>& layer(currentLayers[i]); 1785 if (name.isEmpty() || (name == layer->getName())) { 1786 layer->clearStats(); 1787 } 1788 } 1789} 1790 1791void SurfaceFlinger::dumpAllLocked( 1792 String8& result, char* buffer, size_t SIZE) const 1793{ 1794 // figure out if we're stuck somewhere 1795 const nsecs_t now = systemTime(); 1796 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1797 const nsecs_t inTransaction(mDebugInTransaction); 1798 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1799 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1800 1801 /* 1802 * Dump the visible layer list 1803 */ 1804 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1805 const size_t count = currentLayers.size(); 1806 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1807 result.append(buffer); 1808 for (size_t i=0 ; i<count ; i++) { 1809 const sp<LayerBase>& layer(currentLayers[i]); 1810 layer->dump(result, buffer, SIZE); 1811 } 1812 1813 /* 1814 * Dump the layers in the purgatory 1815 */ 1816 1817 const size_t purgatorySize = mLayerPurgatory.size(); 1818 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1819 result.append(buffer); 1820 for (size_t i=0 ; i<purgatorySize ; i++) { 1821 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1822 layer->shortDump(result, buffer, SIZE); 1823 } 1824 1825 /* 1826 * Dump SurfaceFlinger global state 1827 */ 1828 1829 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1830 result.append(buffer); 1831 1832 HWComposer& hwc(getHwComposer()); 1833 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1834 const GLExtensions& extensions(GLExtensions::getInstance()); 1835 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1836 extensions.getVendor(), 1837 extensions.getRenderer(), 1838 extensions.getVersion()); 1839 result.append(buffer); 1840 1841 snprintf(buffer, SIZE, "EGL : %s\n", 1842 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 1843 result.append(buffer); 1844 1845 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1846 result.append(buffer); 1847 1848 hw->undefinedRegion.dump(result, "undefinedRegion"); 1849 snprintf(buffer, SIZE, 1850 " orientation=%d, canDraw=%d\n", 1851 hw->getOrientation(), hw->canDraw()); 1852 result.append(buffer); 1853 snprintf(buffer, SIZE, 1854 " last eglSwapBuffers() time: %f us\n" 1855 " last transaction time : %f us\n" 1856 " transaction-flags : %08x\n" 1857 " refresh-rate : %f fps\n" 1858 " x-dpi : %f\n" 1859 " y-dpi : %f\n" 1860 " density : %f\n", 1861 mLastSwapBufferTime/1000.0, 1862 mLastTransactionTime/1000.0, 1863 mTransactionFlags, 1864 1e9 / hwc.getRefreshPeriod(), 1865 hw->getDpiX(), 1866 hw->getDpiY(), 1867 hw->getDensity()); 1868 result.append(buffer); 1869 1870 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1871 inSwapBuffersDuration/1000.0); 1872 result.append(buffer); 1873 1874 snprintf(buffer, SIZE, " transaction time: %f us\n", 1875 inTransactionDuration/1000.0); 1876 result.append(buffer); 1877 1878 /* 1879 * VSYNC state 1880 */ 1881 mEventThread->dump(result, buffer, SIZE); 1882 1883 /* 1884 * Dump HWComposer state 1885 */ 1886 snprintf(buffer, SIZE, "h/w composer state:\n"); 1887 result.append(buffer); 1888 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1889 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1890 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1891 result.append(buffer); 1892 hwc.dump(result, buffer, SIZE, hw->getVisibleLayersSortedByZ()); 1893 1894 /* 1895 * Dump gralloc state 1896 */ 1897 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1898 alloc.dump(result); 1899 hw->dump(result); 1900} 1901 1902status_t SurfaceFlinger::onTransact( 1903 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1904{ 1905 switch (code) { 1906 case CREATE_CONNECTION: 1907 case SET_TRANSACTION_STATE: 1908 case BOOT_FINISHED: 1909 case BLANK: 1910 case UNBLANK: 1911 { 1912 // codes that require permission check 1913 IPCThreadState* ipc = IPCThreadState::self(); 1914 const int pid = ipc->getCallingPid(); 1915 const int uid = ipc->getCallingUid(); 1916 if ((uid != AID_GRAPHICS) && 1917 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1918 ALOGE("Permission Denial: " 1919 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1920 return PERMISSION_DENIED; 1921 } 1922 break; 1923 } 1924 case CAPTURE_SCREEN: 1925 { 1926 // codes that require permission check 1927 IPCThreadState* ipc = IPCThreadState::self(); 1928 const int pid = ipc->getCallingPid(); 1929 const int uid = ipc->getCallingUid(); 1930 if ((uid != AID_GRAPHICS) && 1931 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1932 ALOGE("Permission Denial: " 1933 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1934 return PERMISSION_DENIED; 1935 } 1936 break; 1937 } 1938 } 1939 1940 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1941 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1942 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1943 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1944 IPCThreadState* ipc = IPCThreadState::self(); 1945 const int pid = ipc->getCallingPid(); 1946 const int uid = ipc->getCallingUid(); 1947 ALOGE("Permission Denial: " 1948 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1949 return PERMISSION_DENIED; 1950 } 1951 int n; 1952 switch (code) { 1953 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1954 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1955 return NO_ERROR; 1956 case 1002: // SHOW_UPDATES 1957 n = data.readInt32(); 1958 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1959 invalidateHwcGeometry(); 1960 repaintEverything(); 1961 return NO_ERROR; 1962 case 1004:{ // repaint everything 1963 repaintEverything(); 1964 return NO_ERROR; 1965 } 1966 case 1005:{ // force transaction 1967 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1968 return NO_ERROR; 1969 } 1970 case 1006:{ // send empty update 1971 signalRefresh(); 1972 return NO_ERROR; 1973 } 1974 case 1008: // toggle use of hw composer 1975 n = data.readInt32(); 1976 mDebugDisableHWC = n ? 1 : 0; 1977 invalidateHwcGeometry(); 1978 repaintEverything(); 1979 return NO_ERROR; 1980 case 1009: // toggle use of transform hint 1981 n = data.readInt32(); 1982 mDebugDisableTransformHint = n ? 1 : 0; 1983 invalidateHwcGeometry(); 1984 repaintEverything(); 1985 return NO_ERROR; 1986 case 1010: // interrogate. 1987 reply->writeInt32(0); 1988 reply->writeInt32(0); 1989 reply->writeInt32(mDebugRegion); 1990 reply->writeInt32(0); 1991 reply->writeInt32(mDebugDisableHWC); 1992 return NO_ERROR; 1993 case 1013: { 1994 Mutex::Autolock _l(mStateLock); 1995 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1996 reply->writeInt32(hw->getPageFlipCount()); 1997 } 1998 return NO_ERROR; 1999 } 2000 } 2001 return err; 2002} 2003 2004void SurfaceFlinger::repaintEverything() { 2005 android_atomic_or(1, &mRepaintEverything); 2006 signalTransaction(); 2007} 2008 2009// --------------------------------------------------------------------------- 2010 2011status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy, 2012 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2013{ 2014 Mutex::Autolock _l(mStateLock); 2015 return renderScreenToTextureLocked(dpy, textureName, uOut, vOut); 2016} 2017 2018status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 2019 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2020{ 2021 ATRACE_CALL(); 2022 2023 if (!GLExtensions::getInstance().haveFramebufferObject()) 2024 return INVALID_OPERATION; 2025 2026 // get screen geometry 2027 sp<const DisplayDevice> hw(getDisplayDevice(dpy)); 2028 const uint32_t hw_w = hw->getWidth(); 2029 const uint32_t hw_h = hw->getHeight(); 2030 GLfloat u = 1; 2031 GLfloat v = 1; 2032 2033 // make sure to clear all GL error flags 2034 while ( glGetError() != GL_NO_ERROR ) ; 2035 2036 // create a FBO 2037 GLuint name, tname; 2038 glGenTextures(1, &tname); 2039 glBindTexture(GL_TEXTURE_2D, tname); 2040 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2041 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2042 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2043 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2044 if (glGetError() != GL_NO_ERROR) { 2045 while ( glGetError() != GL_NO_ERROR ) ; 2046 GLint tw = (2 << (31 - clz(hw_w))); 2047 GLint th = (2 << (31 - clz(hw_h))); 2048 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2049 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2050 u = GLfloat(hw_w) / tw; 2051 v = GLfloat(hw_h) / th; 2052 } 2053 glGenFramebuffersOES(1, &name); 2054 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2055 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2056 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2057 2058 // redraw the screen entirely... 2059 glDisable(GL_TEXTURE_EXTERNAL_OES); 2060 glDisable(GL_TEXTURE_2D); 2061 glClearColor(0,0,0,1); 2062 glClear(GL_COLOR_BUFFER_BIT); 2063 glMatrixMode(GL_MODELVIEW); 2064 glLoadIdentity(); 2065 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2066 const size_t count = layers.size(); 2067 for (size_t i=0 ; i<count ; ++i) { 2068 const sp<LayerBase>& layer(layers[i]); 2069 layer->draw(hw); 2070 } 2071 2072 hw->compositionComplete(); 2073 2074 // back to main framebuffer 2075 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2076 glDeleteFramebuffersOES(1, &name); 2077 2078 *textureName = tname; 2079 *uOut = u; 2080 *vOut = v; 2081 return NO_ERROR; 2082} 2083 2084// --------------------------------------------------------------------------- 2085 2086status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2087 sp<IMemoryHeap>* heap, 2088 uint32_t* w, uint32_t* h, PixelFormat* f, 2089 uint32_t sw, uint32_t sh, 2090 uint32_t minLayerZ, uint32_t maxLayerZ) 2091{ 2092 ATRACE_CALL(); 2093 2094 status_t result = PERMISSION_DENIED; 2095 2096 // only one display supported for now 2097 if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) { 2098 return BAD_VALUE; 2099 } 2100 2101 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2102 return INVALID_OPERATION; 2103 } 2104 2105 // get screen geometry 2106 sp<const DisplayDevice> hw(getDisplayDevice(dpy)); 2107 const uint32_t hw_w = hw->getWidth(); 2108 const uint32_t hw_h = hw->getHeight(); 2109 2110 // if we have secure windows on this display, never allow the screen capture 2111 if (hw->getSecureLayerVisible()) { 2112 return PERMISSION_DENIED; 2113 } 2114 2115 if ((sw > hw_w) || (sh > hw_h)) { 2116 return BAD_VALUE; 2117 } 2118 2119 sw = (!sw) ? hw_w : sw; 2120 sh = (!sh) ? hw_h : sh; 2121 const size_t size = sw * sh * 4; 2122 const bool filtering = sw != hw_w || sh != hw_h; 2123 2124 //ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2125 // sw, sh, minLayerZ, maxLayerZ); 2126 2127 // make sure to clear all GL error flags 2128 while ( glGetError() != GL_NO_ERROR ) ; 2129 2130 // create a FBO 2131 GLuint name, tname; 2132 glGenRenderbuffersOES(1, &tname); 2133 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2134 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2135 2136 glGenFramebuffersOES(1, &name); 2137 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2138 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2139 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2140 2141 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2142 2143 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2144 2145 // invert everything, b/c glReadPixel() below will invert the FB 2146 glViewport(0, 0, sw, sh); 2147 glMatrixMode(GL_PROJECTION); 2148 glPushMatrix(); 2149 glLoadIdentity(); 2150 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2151 glMatrixMode(GL_MODELVIEW); 2152 2153 // redraw the screen entirely... 2154 glClearColor(0,0,0,1); 2155 glClear(GL_COLOR_BUFFER_BIT); 2156 2157 const LayerVector& layers(mDrawingState.layersSortedByZ); 2158 const size_t count = layers.size(); 2159 for (size_t i=0 ; i<count ; ++i) { 2160 const sp<LayerBase>& layer(layers[i]); 2161 const uint32_t flags = layer->drawingState().flags; 2162 if (!(flags & layer_state_t::eLayerHidden)) { 2163 const uint32_t z = layer->drawingState().z; 2164 if (z >= minLayerZ && z <= maxLayerZ) { 2165 if (filtering) layer->setFiltering(true); 2166 layer->draw(hw); 2167 if (filtering) layer->setFiltering(false); 2168 } 2169 } 2170 } 2171 2172 // check for errors and return screen capture 2173 if (glGetError() != GL_NO_ERROR) { 2174 // error while rendering 2175 result = INVALID_OPERATION; 2176 } else { 2177 // allocate shared memory large enough to hold the 2178 // screen capture 2179 sp<MemoryHeapBase> base( 2180 new MemoryHeapBase(size, 0, "screen-capture") ); 2181 void* const ptr = base->getBase(); 2182 if (ptr) { 2183 // capture the screen with glReadPixels() 2184 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2185 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2186 if (glGetError() == GL_NO_ERROR) { 2187 *heap = base; 2188 *w = sw; 2189 *h = sh; 2190 *f = PIXEL_FORMAT_RGBA_8888; 2191 result = NO_ERROR; 2192 } 2193 } else { 2194 result = NO_MEMORY; 2195 } 2196 } 2197 glViewport(0, 0, hw_w, hw_h); 2198 glMatrixMode(GL_PROJECTION); 2199 glPopMatrix(); 2200 glMatrixMode(GL_MODELVIEW); 2201 } else { 2202 result = BAD_VALUE; 2203 } 2204 2205 // release FBO resources 2206 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2207 glDeleteRenderbuffersOES(1, &tname); 2208 glDeleteFramebuffersOES(1, &name); 2209 2210 hw->compositionComplete(); 2211 2212 // ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2213 2214 return result; 2215} 2216 2217 2218status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2219 sp<IMemoryHeap>* heap, 2220 uint32_t* width, uint32_t* height, PixelFormat* format, 2221 uint32_t sw, uint32_t sh, 2222 uint32_t minLayerZ, uint32_t maxLayerZ) 2223{ 2224 // only one display supported for now 2225 if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2226 return BAD_VALUE; 2227 2228 if (!GLExtensions::getInstance().haveFramebufferObject()) 2229 return INVALID_OPERATION; 2230 2231 class MessageCaptureScreen : public MessageBase { 2232 SurfaceFlinger* flinger; 2233 DisplayID dpy; 2234 sp<IMemoryHeap>* heap; 2235 uint32_t* w; 2236 uint32_t* h; 2237 PixelFormat* f; 2238 uint32_t sw; 2239 uint32_t sh; 2240 uint32_t minLayerZ; 2241 uint32_t maxLayerZ; 2242 status_t result; 2243 public: 2244 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2245 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2246 uint32_t sw, uint32_t sh, 2247 uint32_t minLayerZ, uint32_t maxLayerZ) 2248 : flinger(flinger), dpy(dpy), 2249 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2250 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2251 result(PERMISSION_DENIED) 2252 { 2253 } 2254 status_t getResult() const { 2255 return result; 2256 } 2257 virtual bool handler() { 2258 Mutex::Autolock _l(flinger->mStateLock); 2259 result = flinger->captureScreenImplLocked(dpy, 2260 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2261 return true; 2262 } 2263 }; 2264 2265 sp<MessageBase> msg = new MessageCaptureScreen(this, 2266 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2267 status_t res = postMessageSync(msg); 2268 if (res == NO_ERROR) { 2269 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2270 } 2271 return res; 2272} 2273 2274// --------------------------------------------------------------------------- 2275 2276SurfaceFlinger::LayerVector::LayerVector() { 2277} 2278 2279SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2280 : SortedVector<sp<LayerBase> >(rhs) { 2281} 2282 2283int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2284 const void* rhs) const 2285{ 2286 // sort layers per layer-stack, then by z-order and finally by sequence 2287 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2288 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2289 2290 uint32_t ls = l->currentState().layerStack; 2291 uint32_t rs = r->currentState().layerStack; 2292 if (ls != rs) 2293 return ls - rs; 2294 2295 uint32_t lz = l->currentState().z; 2296 uint32_t rz = r->currentState().z; 2297 if (lz != rz) 2298 return lz - rz; 2299 2300 return l->sequence - r->sequence; 2301} 2302 2303// --------------------------------------------------------------------------- 2304 2305SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2306 : id(DisplayDevice::DISPLAY_ID_MAIN), layerStack(0), orientation(0) { 2307} 2308 2309// --------------------------------------------------------------------------- 2310 2311GraphicBufferAlloc::GraphicBufferAlloc() {} 2312 2313GraphicBufferAlloc::~GraphicBufferAlloc() {} 2314 2315sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2316 PixelFormat format, uint32_t usage, status_t* error) { 2317 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2318 status_t err = graphicBuffer->initCheck(); 2319 *error = err; 2320 if (err != 0 || graphicBuffer->handle == 0) { 2321 if (err == NO_MEMORY) { 2322 GraphicBuffer::dumpAllocationsToSystemLog(); 2323 } 2324 ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2325 "failed (%s), handle=%p", 2326 w, h, strerror(-err), graphicBuffer->handle); 2327 return 0; 2328 } 2329 return graphicBuffer; 2330} 2331 2332// --------------------------------------------------------------------------- 2333 2334}; // namespace android 2335