SurfaceFlinger.cpp revision 99e3fab534d3a489726665cb8c71edecd5798b04
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#include <stdlib.h> 18#include <stdio.h> 19#include <stdint.h> 20#include <unistd.h> 21#include <fcntl.h> 22#include <errno.h> 23#include <math.h> 24#include <limits.h> 25#include <sys/types.h> 26#include <sys/stat.h> 27#include <sys/ioctl.h> 28 29#include <cutils/log.h> 30#include <cutils/properties.h> 31 32#include <binder/IPCThreadState.h> 33#include <binder/IServiceManager.h> 34#include <binder/MemoryHeapBase.h> 35 36#include <utils/String8.h> 37#include <utils/String16.h> 38#include <utils/StopWatch.h> 39 40#include <ui/GraphicBufferAllocator.h> 41#include <ui/GraphicLog.h> 42#include <ui/PixelFormat.h> 43 44#include <pixelflinger/pixelflinger.h> 45#include <GLES/gl.h> 46 47#include "clz.h" 48#include "GLExtensions.h" 49#include "Layer.h" 50#include "LayerBlur.h" 51#include "LayerBuffer.h" 52#include "LayerDim.h" 53#include "SurfaceFlinger.h" 54 55#include "DisplayHardware/DisplayHardware.h" 56#include "DisplayHardware/HWComposer.h" 57 58/* ideally AID_GRAPHICS would be in a semi-public header 59 * or there would be a way to map a user/group name to its id 60 */ 61#ifndef AID_GRAPHICS 62#define AID_GRAPHICS 1003 63#endif 64 65#define DISPLAY_COUNT 1 66 67namespace android { 68// --------------------------------------------------------------------------- 69 70SurfaceFlinger::SurfaceFlinger() 71 : BnSurfaceComposer(), Thread(false), 72 mTransactionFlags(0), 73 mTransactionCount(0), 74 mResizeTransationPending(false), 75 mLayersRemoved(false), 76 mBootTime(systemTime()), 77 mHardwareTest("android.permission.HARDWARE_TEST"), 78 mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"), 79 mReadFramebuffer("android.permission.READ_FRAME_BUFFER"), 80 mDump("android.permission.DUMP"), 81 mVisibleRegionsDirty(false), 82 mHwWorkListDirty(false), 83 mDeferReleaseConsole(false), 84 mFreezeDisplay(false), 85 mElectronBeamAnimation(false), 86 mFreezeCount(0), 87 mFreezeDisplayTime(0), 88 mDebugRegion(0), 89 mDebugBackground(0), 90 mDebugDisableHWC(0), 91 mDebugInSwapBuffers(0), 92 mLastSwapBufferTime(0), 93 mDebugInTransaction(0), 94 mLastTransactionTime(0), 95 mBootFinished(false), 96 mConsoleSignals(0), 97 mSecureFrameBuffer(0) 98{ 99 init(); 100} 101 102void SurfaceFlinger::init() 103{ 104 LOGI("SurfaceFlinger is starting"); 105 106 // debugging stuff... 107 char value[PROPERTY_VALUE_MAX]; 108 property_get("debug.sf.showupdates", value, "0"); 109 mDebugRegion = atoi(value); 110 property_get("debug.sf.showbackground", value, "0"); 111 mDebugBackground = atoi(value); 112 113 LOGI_IF(mDebugRegion, "showupdates enabled"); 114 LOGI_IF(mDebugBackground, "showbackground enabled"); 115} 116 117SurfaceFlinger::~SurfaceFlinger() 118{ 119 glDeleteTextures(1, &mWormholeTexName); 120} 121 122overlay_control_device_t* SurfaceFlinger::getOverlayEngine() const 123{ 124 return graphicPlane(0).displayHardware().getOverlayEngine(); 125} 126 127sp<IMemoryHeap> SurfaceFlinger::getCblk() const 128{ 129 return mServerHeap; 130} 131 132sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 133{ 134 sp<ISurfaceComposerClient> bclient; 135 sp<Client> client(new Client(this)); 136 status_t err = client->initCheck(); 137 if (err == NO_ERROR) { 138 bclient = client; 139 } 140 return bclient; 141} 142 143sp<ISurfaceComposerClient> SurfaceFlinger::createClientConnection() 144{ 145 sp<ISurfaceComposerClient> bclient; 146 sp<UserClient> client(new UserClient(this)); 147 status_t err = client->initCheck(); 148 if (err == NO_ERROR) { 149 bclient = client; 150 } 151 return bclient; 152} 153 154 155const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 156{ 157 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 158 const GraphicPlane& plane(mGraphicPlanes[dpy]); 159 return plane; 160} 161 162GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 163{ 164 return const_cast<GraphicPlane&>( 165 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 166} 167 168void SurfaceFlinger::bootFinished() 169{ 170 const nsecs_t now = systemTime(); 171 const nsecs_t duration = now - mBootTime; 172 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 173 mBootFinished = true; 174 property_set("ctl.stop", "bootanim"); 175} 176 177void SurfaceFlinger::onFirstRef() 178{ 179 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 180 181 // Wait for the main thread to be done with its initialization 182 mReadyToRunBarrier.wait(); 183} 184 185static inline uint16_t pack565(int r, int g, int b) { 186 return (r<<11)|(g<<5)|b; 187} 188 189status_t SurfaceFlinger::readyToRun() 190{ 191 LOGI( "SurfaceFlinger's main thread ready to run. " 192 "Initializing graphics H/W..."); 193 194 // we only support one display currently 195 int dpy = 0; 196 197 { 198 // initialize the main display 199 GraphicPlane& plane(graphicPlane(dpy)); 200 DisplayHardware* const hw = new DisplayHardware(this, dpy); 201 plane.setDisplayHardware(hw); 202 } 203 204 // create the shared control-block 205 mServerHeap = new MemoryHeapBase(4096, 206 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 207 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 208 209 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 210 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 211 212 new(mServerCblk) surface_flinger_cblk_t; 213 214 // initialize primary screen 215 // (other display should be initialized in the same manner, but 216 // asynchronously, as they could come and go. None of this is supported 217 // yet). 218 const GraphicPlane& plane(graphicPlane(dpy)); 219 const DisplayHardware& hw = plane.displayHardware(); 220 const uint32_t w = hw.getWidth(); 221 const uint32_t h = hw.getHeight(); 222 const uint32_t f = hw.getFormat(); 223 hw.makeCurrent(); 224 225 // initialize the shared control block 226 mServerCblk->connected |= 1<<dpy; 227 display_cblk_t* dcblk = mServerCblk->displays + dpy; 228 memset(dcblk, 0, sizeof(display_cblk_t)); 229 dcblk->w = plane.getWidth(); 230 dcblk->h = plane.getHeight(); 231 dcblk->format = f; 232 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 233 dcblk->xdpi = hw.getDpiX(); 234 dcblk->ydpi = hw.getDpiY(); 235 dcblk->fps = hw.getRefreshRate(); 236 dcblk->density = hw.getDensity(); 237 238 // Initialize OpenGL|ES 239 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 240 glPixelStorei(GL_PACK_ALIGNMENT, 4); 241 glEnableClientState(GL_VERTEX_ARRAY); 242 glEnable(GL_SCISSOR_TEST); 243 glShadeModel(GL_FLAT); 244 glDisable(GL_DITHER); 245 glDisable(GL_CULL_FACE); 246 247 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 248 const uint16_t g1 = pack565(0x17,0x2f,0x17); 249 const uint16_t textureData[4] = { g0, g1, g1, g0 }; 250 glGenTextures(1, &mWormholeTexName); 251 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 252 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 253 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 254 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 255 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 256 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 257 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, textureData); 258 259 glViewport(0, 0, w, h); 260 glMatrixMode(GL_PROJECTION); 261 glLoadIdentity(); 262 glOrthof(0, w, h, 0, 0, 1); 263 264 LayerDim::initDimmer(this, w, h); 265 266 mReadyToRunBarrier.open(); 267 268 /* 269 * We're now ready to accept clients... 270 */ 271 272 // start boot animation 273 property_set("ctl.start", "bootanim"); 274 275 return NO_ERROR; 276} 277 278// ---------------------------------------------------------------------------- 279#if 0 280#pragma mark - 281#pragma mark Events Handler 282#endif 283 284void SurfaceFlinger::waitForEvent() 285{ 286 while (true) { 287 nsecs_t timeout = -1; 288 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 289 if (UNLIKELY(isFrozen())) { 290 // wait 5 seconds 291 const nsecs_t now = systemTime(); 292 if (mFreezeDisplayTime == 0) { 293 mFreezeDisplayTime = now; 294 } 295 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 296 timeout = waitTime>0 ? waitTime : 0; 297 } 298 299 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 300 301 // see if we timed out 302 if (isFrozen()) { 303 const nsecs_t now = systemTime(); 304 nsecs_t frozenTime = (now - mFreezeDisplayTime); 305 if (frozenTime >= freezeDisplayTimeout) { 306 // we timed out and are still frozen 307 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 308 mFreezeDisplay, mFreezeCount); 309 mFreezeDisplayTime = 0; 310 mFreezeCount = 0; 311 mFreezeDisplay = false; 312 } 313 } 314 315 if (msg != 0) { 316 switch (msg->what) { 317 case MessageQueue::INVALIDATE: 318 // invalidate message, just return to the main loop 319 return; 320 } 321 } 322 } 323} 324 325void SurfaceFlinger::signalEvent() { 326 mEventQueue.invalidate(); 327} 328 329void SurfaceFlinger::signal() const { 330 // this is the IPC call 331 const_cast<SurfaceFlinger*>(this)->signalEvent(); 332} 333 334status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 335 nsecs_t reltime, uint32_t flags) 336{ 337 return mEventQueue.postMessage(msg, reltime, flags); 338} 339 340status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 341 nsecs_t reltime, uint32_t flags) 342{ 343 status_t res = mEventQueue.postMessage(msg, reltime, flags); 344 if (res == NO_ERROR) { 345 msg->wait(); 346 } 347 return res; 348} 349 350// ---------------------------------------------------------------------------- 351#if 0 352#pragma mark - 353#pragma mark Main loop 354#endif 355 356bool SurfaceFlinger::threadLoop() 357{ 358 waitForEvent(); 359 360 // check for transactions 361 if (UNLIKELY(mConsoleSignals)) { 362 handleConsoleEvents(); 363 } 364 365 if (LIKELY(mTransactionCount == 0)) { 366 // if we're in a global transaction, don't do anything. 367 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 368 uint32_t transactionFlags = getTransactionFlags(mask); 369 if (LIKELY(transactionFlags)) { 370 handleTransaction(transactionFlags); 371 } 372 } 373 374 // post surfaces (if needed) 375 handlePageFlip(); 376 377 if (UNLIKELY(mHwWorkListDirty)) { 378 // build the h/w work list 379 handleWorkList(); 380 } 381 382 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 383 if (LIKELY(hw.canDraw() && !isFrozen())) { 384 // repaint the framebuffer (if needed) 385 386 const int index = hw.getCurrentBufferIndex(); 387 GraphicLog& logger(GraphicLog::getInstance()); 388 389 logger.log(GraphicLog::SF_REPAINT, index); 390 handleRepaint(); 391 392 // inform the h/w that we're done compositing 393 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 394 hw.compositionComplete(); 395 396 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 397 postFramebuffer(); 398 399 logger.log(GraphicLog::SF_UNLOCK_CLIENTS, index); 400 unlockClients(); 401 402 logger.log(GraphicLog::SF_REPAINT_DONE, index); 403 } else { 404 // pretend we did the post 405 unlockClients(); 406 usleep(16667); // 60 fps period 407 } 408 return true; 409} 410 411void SurfaceFlinger::postFramebuffer() 412{ 413 if (!mInvalidRegion.isEmpty()) { 414 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 415 const nsecs_t now = systemTime(); 416 mDebugInSwapBuffers = now; 417 hw.flip(mInvalidRegion); 418 mLastSwapBufferTime = systemTime() - now; 419 mDebugInSwapBuffers = 0; 420 mInvalidRegion.clear(); 421 } 422} 423 424void SurfaceFlinger::handleConsoleEvents() 425{ 426 // something to do with the console 427 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 428 429 int what = android_atomic_and(0, &mConsoleSignals); 430 if (what & eConsoleAcquired) { 431 hw.acquireScreen(); 432 // this is a temporary work-around, eventually this should be called 433 // by the power-manager 434 if (mElectronBeamAnimation) 435 SurfaceFlinger::turnElectronBeamOn(0); 436 } 437 438 if (mDeferReleaseConsole && hw.isScreenAcquired()) { 439 // We got the release signal before the acquire signal 440 mDeferReleaseConsole = false; 441 hw.releaseScreen(); 442 } 443 444 if (what & eConsoleReleased) { 445 if (hw.isScreenAcquired()) { 446 hw.releaseScreen(); 447 } else { 448 mDeferReleaseConsole = true; 449 } 450 } 451 452 mDirtyRegion.set(hw.bounds()); 453} 454 455void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 456{ 457 Vector< sp<LayerBase> > ditchedLayers; 458 459 /* 460 * Perform and commit the transaction 461 */ 462 463 { // scope for the lock 464 Mutex::Autolock _l(mStateLock); 465 const nsecs_t now = systemTime(); 466 mDebugInTransaction = now; 467 handleTransactionLocked(transactionFlags, ditchedLayers); 468 mLastTransactionTime = systemTime() - now; 469 mDebugInTransaction = 0; 470 mHwWorkListDirty = true; 471 // here the transaction has been committed 472 } 473 474 /* 475 * Clean-up all layers that went away 476 * (do this without the lock held) 477 */ 478 479 const size_t count = ditchedLayers.size(); 480 for (size_t i=0 ; i<count ; i++) { 481 if (ditchedLayers[i] != 0) { 482 //LOGD("ditching layer %p", ditchedLayers[i].get()); 483 ditchedLayers[i]->ditch(); 484 } 485 } 486} 487 488void SurfaceFlinger::handleTransactionLocked( 489 uint32_t transactionFlags, Vector< sp<LayerBase> >& ditchedLayers) 490{ 491 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 492 const size_t count = currentLayers.size(); 493 494 /* 495 * Traversal of the children 496 * (perform the transaction for each of them if needed) 497 */ 498 499 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 500 if (layersNeedTransaction) { 501 for (size_t i=0 ; i<count ; i++) { 502 const sp<LayerBase>& layer = currentLayers[i]; 503 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 504 if (!trFlags) continue; 505 506 const uint32_t flags = layer->doTransaction(0); 507 if (flags & Layer::eVisibleRegion) 508 mVisibleRegionsDirty = true; 509 } 510 } 511 512 /* 513 * Perform our own transaction if needed 514 */ 515 516 if (transactionFlags & eTransactionNeeded) { 517 if (mCurrentState.orientation != mDrawingState.orientation) { 518 // the orientation has changed, recompute all visible regions 519 // and invalidate everything. 520 521 const int dpy = 0; 522 const int orientation = mCurrentState.orientation; 523 const uint32_t type = mCurrentState.orientationType; 524 GraphicPlane& plane(graphicPlane(dpy)); 525 plane.setOrientation(orientation); 526 527 // update the shared control block 528 const DisplayHardware& hw(plane.displayHardware()); 529 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 530 dcblk->orientation = orientation; 531 dcblk->w = plane.getWidth(); 532 dcblk->h = plane.getHeight(); 533 534 mVisibleRegionsDirty = true; 535 mDirtyRegion.set(hw.bounds()); 536 } 537 538 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 539 // freezing or unfreezing the display -> trigger animation if needed 540 mFreezeDisplay = mCurrentState.freezeDisplay; 541 if (mFreezeDisplay) 542 mFreezeDisplayTime = 0; 543 } 544 545 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 546 // layers have been added 547 mVisibleRegionsDirty = true; 548 } 549 550 // some layers might have been removed, so 551 // we need to update the regions they're exposing. 552 if (mLayersRemoved) { 553 mLayersRemoved = false; 554 mVisibleRegionsDirty = true; 555 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 556 const size_t count = previousLayers.size(); 557 for (size_t i=0 ; i<count ; i++) { 558 const sp<LayerBase>& layer(previousLayers[i]); 559 if (currentLayers.indexOf( layer ) < 0) { 560 // this layer is not visible anymore 561 ditchedLayers.add(layer); 562 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 563 } 564 } 565 } 566 } 567 568 commitTransaction(); 569} 570 571sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 572{ 573 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 574} 575 576void SurfaceFlinger::computeVisibleRegions( 577 LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 578{ 579 const GraphicPlane& plane(graphicPlane(0)); 580 const Transform& planeTransform(plane.transform()); 581 const DisplayHardware& hw(plane.displayHardware()); 582 const Region screenRegion(hw.bounds()); 583 584 Region aboveOpaqueLayers; 585 Region aboveCoveredLayers; 586 Region dirty; 587 588 bool secureFrameBuffer = false; 589 590 size_t i = currentLayers.size(); 591 while (i--) { 592 const sp<LayerBase>& layer = currentLayers[i]; 593 layer->validateVisibility(planeTransform); 594 595 // start with the whole surface at its current location 596 const Layer::State& s(layer->drawingState()); 597 598 /* 599 * opaqueRegion: area of a surface that is fully opaque. 600 */ 601 Region opaqueRegion; 602 603 /* 604 * visibleRegion: area of a surface that is visible on screen 605 * and not fully transparent. This is essentially the layer's 606 * footprint minus the opaque regions above it. 607 * Areas covered by a translucent surface are considered visible. 608 */ 609 Region visibleRegion; 610 611 /* 612 * coveredRegion: area of a surface that is covered by all 613 * visible regions above it (which includes the translucent areas). 614 */ 615 Region coveredRegion; 616 617 618 // handle hidden surfaces by setting the visible region to empty 619 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 620 const bool translucent = layer->needsBlending(); 621 const Rect bounds(layer->visibleBounds()); 622 visibleRegion.set(bounds); 623 visibleRegion.andSelf(screenRegion); 624 if (!visibleRegion.isEmpty()) { 625 // Remove the transparent area from the visible region 626 if (translucent) { 627 visibleRegion.subtractSelf(layer->transparentRegionScreen); 628 } 629 630 // compute the opaque region 631 const int32_t layerOrientation = layer->getOrientation(); 632 if (s.alpha==255 && !translucent && 633 ((layerOrientation & Transform::ROT_INVALID) == false)) { 634 // the opaque region is the layer's footprint 635 opaqueRegion = visibleRegion; 636 } 637 } 638 } 639 640 // Clip the covered region to the visible region 641 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 642 643 // Update aboveCoveredLayers for next (lower) layer 644 aboveCoveredLayers.orSelf(visibleRegion); 645 646 // subtract the opaque region covered by the layers above us 647 visibleRegion.subtractSelf(aboveOpaqueLayers); 648 649 // compute this layer's dirty region 650 if (layer->contentDirty) { 651 // we need to invalidate the whole region 652 dirty = visibleRegion; 653 // as well, as the old visible region 654 dirty.orSelf(layer->visibleRegionScreen); 655 layer->contentDirty = false; 656 } else { 657 /* compute the exposed region: 658 * the exposed region consists of two components: 659 * 1) what's VISIBLE now and was COVERED before 660 * 2) what's EXPOSED now less what was EXPOSED before 661 * 662 * note that (1) is conservative, we start with the whole 663 * visible region but only keep what used to be covered by 664 * something -- which mean it may have been exposed. 665 * 666 * (2) handles areas that were not covered by anything but got 667 * exposed because of a resize. 668 */ 669 const Region newExposed = visibleRegion - coveredRegion; 670 const Region oldVisibleRegion = layer->visibleRegionScreen; 671 const Region oldCoveredRegion = layer->coveredRegionScreen; 672 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 673 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 674 } 675 dirty.subtractSelf(aboveOpaqueLayers); 676 677 // accumulate to the screen dirty region 678 dirtyRegion.orSelf(dirty); 679 680 // Update aboveOpaqueLayers for next (lower) layer 681 aboveOpaqueLayers.orSelf(opaqueRegion); 682 683 // Store the visible region is screen space 684 layer->setVisibleRegion(visibleRegion); 685 layer->setCoveredRegion(coveredRegion); 686 687 // If a secure layer is partially visible, lock-down the screen! 688 if (layer->isSecure() && !visibleRegion.isEmpty()) { 689 secureFrameBuffer = true; 690 } 691 } 692 693 // invalidate the areas where a layer was removed 694 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 695 mDirtyRegionRemovedLayer.clear(); 696 697 mSecureFrameBuffer = secureFrameBuffer; 698 opaqueRegion = aboveOpaqueLayers; 699} 700 701 702void SurfaceFlinger::commitTransaction() 703{ 704 mDrawingState = mCurrentState; 705 mResizeTransationPending = false; 706 mTransactionCV.broadcast(); 707} 708 709void SurfaceFlinger::handlePageFlip() 710{ 711 bool visibleRegions = mVisibleRegionsDirty; 712 LayerVector& currentLayers( 713 const_cast<LayerVector&>(mDrawingState.layersSortedByZ)); 714 visibleRegions |= lockPageFlip(currentLayers); 715 716 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 717 const Region screenRegion(hw.bounds()); 718 if (visibleRegions) { 719 Region opaqueRegion; 720 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 721 722 /* 723 * rebuild the visible layer list 724 */ 725 mVisibleLayersSortedByZ.clear(); 726 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 727 size_t count = currentLayers.size(); 728 mVisibleLayersSortedByZ.setCapacity(count); 729 for (size_t i=0 ; i<count ; i++) { 730 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 731 mVisibleLayersSortedByZ.add(currentLayers[i]); 732 } 733 734 mWormholeRegion = screenRegion.subtract(opaqueRegion); 735 mVisibleRegionsDirty = false; 736 mHwWorkListDirty = true; 737 } 738 739 unlockPageFlip(currentLayers); 740 mDirtyRegion.andSelf(screenRegion); 741} 742 743bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 744{ 745 bool recomputeVisibleRegions = false; 746 size_t count = currentLayers.size(); 747 sp<LayerBase> const* layers = currentLayers.array(); 748 for (size_t i=0 ; i<count ; i++) { 749 const sp<LayerBase>& layer(layers[i]); 750 layer->lockPageFlip(recomputeVisibleRegions); 751 } 752 return recomputeVisibleRegions; 753} 754 755void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 756{ 757 const GraphicPlane& plane(graphicPlane(0)); 758 const Transform& planeTransform(plane.transform()); 759 size_t count = currentLayers.size(); 760 sp<LayerBase> const* layers = currentLayers.array(); 761 for (size_t i=0 ; i<count ; i++) { 762 const sp<LayerBase>& layer(layers[i]); 763 layer->unlockPageFlip(planeTransform, mDirtyRegion); 764 } 765} 766 767void SurfaceFlinger::handleWorkList() 768{ 769 mHwWorkListDirty = false; 770 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 771 if (hwc.initCheck() == NO_ERROR) { 772 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 773 const size_t count = currentLayers.size(); 774 hwc.createWorkList(count); 775 hwc_layer_t* const cur(hwc.getLayers()); 776 for (size_t i=0 ; cur && i<count ; i++) { 777 currentLayers[i]->setGeometry(&cur[i]); 778 if (mDebugDisableHWC) { 779 cur[i].compositionType = HWC_FRAMEBUFFER; 780 cur[i].flags |= HWC_SKIP_LAYER; 781 } 782 } 783 } 784} 785 786void SurfaceFlinger::handleRepaint() 787{ 788 // compute the invalid region 789 mInvalidRegion.orSelf(mDirtyRegion); 790 if (mInvalidRegion.isEmpty()) { 791 // nothing to do 792 return; 793 } 794 795 if (UNLIKELY(mDebugRegion)) { 796 debugFlashRegions(); 797 } 798 799 // set the frame buffer 800 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 801 glMatrixMode(GL_MODELVIEW); 802 glLoadIdentity(); 803 804 uint32_t flags = hw.getFlags(); 805 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 806 (flags & DisplayHardware::BUFFER_PRESERVED)) 807 { 808 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 809 // takes a rectangle, we must make sure to update that whole 810 // rectangle in that case 811 if (flags & DisplayHardware::SWAP_RECTANGLE) { 812 // TODO: we really should be able to pass a region to 813 // SWAP_RECTANGLE so that we don't have to redraw all this. 814 mDirtyRegion.set(mInvalidRegion.bounds()); 815 } else { 816 // in the BUFFER_PRESERVED case, obviously, we can update only 817 // what's needed and nothing more. 818 // NOTE: this is NOT a common case, as preserving the backbuffer 819 // is costly and usually involves copying the whole update back. 820 } 821 } else { 822 if (flags & DisplayHardware::PARTIAL_UPDATES) { 823 // We need to redraw the rectangle that will be updated 824 // (pushed to the framebuffer). 825 // This is needed because PARTIAL_UPDATES only takes one 826 // rectangle instead of a region (see DisplayHardware::flip()) 827 mDirtyRegion.set(mInvalidRegion.bounds()); 828 } else { 829 // we need to redraw everything (the whole screen) 830 mDirtyRegion.set(hw.bounds()); 831 mInvalidRegion = mDirtyRegion; 832 } 833 } 834 835 // compose all surfaces 836 composeSurfaces(mDirtyRegion); 837 838 // clear the dirty regions 839 mDirtyRegion.clear(); 840} 841 842void SurfaceFlinger::composeSurfaces(const Region& dirty) 843{ 844 if (UNLIKELY(!mWormholeRegion.isEmpty())) { 845 // should never happen unless the window manager has a bug 846 // draw something... 847 drawWormhole(); 848 } 849 850 status_t err = NO_ERROR; 851 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 852 size_t count = layers.size(); 853 854 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 855 HWComposer& hwc(hw.getHwComposer()); 856 hwc_layer_t* const cur(hwc.getLayers()); 857 858 LOGE_IF(cur && hwc.getNumLayers() != count, 859 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 860 hwc.getNumLayers(), count); 861 862 // just to be extra-safe, use the smallest count 863 if (hwc.initCheck() == NO_ERROR) { 864 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 865 } 866 867 /* 868 * update the per-frame h/w composer data for each layer 869 * and build the transparent region of the FB 870 */ 871 Region transparent; 872 if (cur) { 873 for (size_t i=0 ; i<count ; i++) { 874 const sp<LayerBase>& layer(layers[i]); 875 layer->setPerFrameData(&cur[i]); 876 if (cur[i].hints & HWC_HINT_CLEAR_FB) { 877 if (!(layer->needsBlending())) { 878 transparent.orSelf(layer->visibleRegionScreen); 879 } 880 } 881 } 882 err = hwc.prepare(); 883 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 884 } 885 886 /* 887 * clear the area of the FB that need to be transparent 888 */ 889 transparent.andSelf(dirty); 890 if (!transparent.isEmpty()) { 891 glClearColor(0,0,0,0); 892 Region::const_iterator it = transparent.begin(); 893 Region::const_iterator const end = transparent.end(); 894 const int32_t height = hw.getHeight(); 895 while (it != end) { 896 const Rect& r(*it++); 897 const GLint sy = height - (r.top + r.height()); 898 glScissor(r.left, sy, r.width(), r.height()); 899 glClear(GL_COLOR_BUFFER_BIT); 900 } 901 } 902 903 904 /* 905 * and then, render the layers targeted at the framebuffer 906 */ 907 for (size_t i=0 ; i<count ; i++) { 908 if (cur) { 909 if ((cur[i].compositionType != HWC_FRAMEBUFFER) && 910 !(cur[i].flags & HWC_SKIP_LAYER)) { 911 // skip layers handled by the HAL 912 continue; 913 } 914 } 915 916 const sp<LayerBase>& layer(layers[i]); 917 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 918 if (!clip.isEmpty()) { 919 layer->draw(clip); 920 } 921 } 922} 923 924void SurfaceFlinger::unlockClients() 925{ 926 const LayerVector& drawingLayers(mDrawingState.layersSortedByZ); 927 const size_t count = drawingLayers.size(); 928 sp<LayerBase> const* const layers = drawingLayers.array(); 929 for (size_t i=0 ; i<count ; ++i) { 930 const sp<LayerBase>& layer = layers[i]; 931 layer->finishPageFlip(); 932 } 933} 934 935void SurfaceFlinger::debugFlashRegions() 936{ 937 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 938 const uint32_t flags = hw.getFlags(); 939 940 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 941 (flags & DisplayHardware::BUFFER_PRESERVED))) { 942 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 943 mDirtyRegion.bounds() : hw.bounds()); 944 composeSurfaces(repaint); 945 } 946 947 TextureManager::deactivateTextures(); 948 949 glDisable(GL_BLEND); 950 glDisable(GL_DITHER); 951 glDisable(GL_SCISSOR_TEST); 952 953 static int toggle = 0; 954 toggle = 1 - toggle; 955 if (toggle) { 956 glColor4f(1, 0, 1, 1); 957 } else { 958 glColor4f(1, 1, 0, 1); 959 } 960 961 Region::const_iterator it = mDirtyRegion.begin(); 962 Region::const_iterator const end = mDirtyRegion.end(); 963 while (it != end) { 964 const Rect& r = *it++; 965 GLfloat vertices[][2] = { 966 { r.left, r.top }, 967 { r.left, r.bottom }, 968 { r.right, r.bottom }, 969 { r.right, r.top } 970 }; 971 glVertexPointer(2, GL_FLOAT, 0, vertices); 972 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 973 } 974 975 if (mInvalidRegion.isEmpty()) { 976 mDirtyRegion.dump("mDirtyRegion"); 977 mInvalidRegion.dump("mInvalidRegion"); 978 } 979 hw.flip(mInvalidRegion); 980 981 if (mDebugRegion > 1) 982 usleep(mDebugRegion * 1000); 983 984 glEnable(GL_SCISSOR_TEST); 985 //mDirtyRegion.dump("mDirtyRegion"); 986} 987 988void SurfaceFlinger::drawWormhole() const 989{ 990 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 991 if (region.isEmpty()) 992 return; 993 994 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 995 const int32_t width = hw.getWidth(); 996 const int32_t height = hw.getHeight(); 997 998 glDisable(GL_BLEND); 999 glDisable(GL_DITHER); 1000 1001 if (LIKELY(!mDebugBackground)) { 1002 glClearColor(0,0,0,0); 1003 Region::const_iterator it = region.begin(); 1004 Region::const_iterator const end = region.end(); 1005 while (it != end) { 1006 const Rect& r = *it++; 1007 const GLint sy = height - (r.top + r.height()); 1008 glScissor(r.left, sy, r.width(), r.height()); 1009 glClear(GL_COLOR_BUFFER_BIT); 1010 } 1011 } else { 1012 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1013 { width, height }, { 0, height } }; 1014 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1015 glVertexPointer(2, GL_SHORT, 0, vertices); 1016 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1017 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1018#if defined(GL_OES_EGL_image_external) 1019 if (GLExtensions::getInstance().haveTextureExternal()) { 1020 glDisable(GL_TEXTURE_EXTERNAL_OES); 1021 } 1022#endif 1023 glEnable(GL_TEXTURE_2D); 1024 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1025 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1026 glMatrixMode(GL_TEXTURE); 1027 glLoadIdentity(); 1028 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1029 Region::const_iterator it = region.begin(); 1030 Region::const_iterator const end = region.end(); 1031 while (it != end) { 1032 const Rect& r = *it++; 1033 const GLint sy = height - (r.top + r.height()); 1034 glScissor(r.left, sy, r.width(), r.height()); 1035 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1036 } 1037 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1038 } 1039} 1040 1041void SurfaceFlinger::debugShowFPS() const 1042{ 1043 static int mFrameCount; 1044 static int mLastFrameCount = 0; 1045 static nsecs_t mLastFpsTime = 0; 1046 static float mFps = 0; 1047 mFrameCount++; 1048 nsecs_t now = systemTime(); 1049 nsecs_t diff = now - mLastFpsTime; 1050 if (diff > ms2ns(250)) { 1051 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1052 mLastFpsTime = now; 1053 mLastFrameCount = mFrameCount; 1054 } 1055 // XXX: mFPS has the value we want 1056 } 1057 1058status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1059{ 1060 Mutex::Autolock _l(mStateLock); 1061 addLayer_l(layer); 1062 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1063 return NO_ERROR; 1064} 1065 1066status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1067{ 1068 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1069 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1070} 1071 1072ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1073 const sp<LayerBaseClient>& lbc) 1074{ 1075 Mutex::Autolock _l(mStateLock); 1076 1077 // attach this layer to the client 1078 ssize_t name = client->attachLayer(lbc); 1079 1080 // add this layer to the current state list 1081 addLayer_l(lbc); 1082 1083 return name; 1084} 1085 1086status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1087{ 1088 Mutex::Autolock _l(mStateLock); 1089 status_t err = purgatorizeLayer_l(layer); 1090 if (err == NO_ERROR) 1091 setTransactionFlags(eTransactionNeeded); 1092 return err; 1093} 1094 1095status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1096{ 1097 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1098 if (lbc != 0) { 1099 mLayerMap.removeItem( lbc->getSurface()->asBinder() ); 1100 } 1101 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1102 if (index >= 0) { 1103 mLayersRemoved = true; 1104 return NO_ERROR; 1105 } 1106 return status_t(index); 1107} 1108 1109status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1110{ 1111 // remove the layer from the main list (through a transaction). 1112 ssize_t err = removeLayer_l(layerBase); 1113 1114 layerBase->onRemoved(); 1115 1116 // it's possible that we don't find a layer, because it might 1117 // have been destroyed already -- this is not technically an error 1118 // from the user because there is a race between Client::destroySurface(), 1119 // ~Client() and ~ISurface(). 1120 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1121} 1122 1123status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1124{ 1125 layer->forceVisibilityTransaction(); 1126 setTransactionFlags(eTraversalNeeded); 1127 return NO_ERROR; 1128} 1129 1130uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1131{ 1132 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1133} 1134 1135uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1136{ 1137 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1138 if ((old & flags)==0) { // wake the server up 1139 signalEvent(); 1140 } 1141 return old; 1142} 1143 1144void SurfaceFlinger::openGlobalTransaction() 1145{ 1146 android_atomic_inc(&mTransactionCount); 1147} 1148 1149void SurfaceFlinger::closeGlobalTransaction() 1150{ 1151 if (android_atomic_dec(&mTransactionCount) == 1) { 1152 signalEvent(); 1153 1154 // if there is a transaction with a resize, wait for it to 1155 // take effect before returning. 1156 Mutex::Autolock _l(mStateLock); 1157 while (mResizeTransationPending) { 1158 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1159 if (CC_UNLIKELY(err != NO_ERROR)) { 1160 // just in case something goes wrong in SF, return to the 1161 // called after a few seconds. 1162 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1163 mResizeTransationPending = false; 1164 break; 1165 } 1166 } 1167 } 1168} 1169 1170status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1171{ 1172 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1173 return BAD_VALUE; 1174 1175 Mutex::Autolock _l(mStateLock); 1176 mCurrentState.freezeDisplay = 1; 1177 setTransactionFlags(eTransactionNeeded); 1178 1179 // flags is intended to communicate some sort of animation behavior 1180 // (for instance fading) 1181 return NO_ERROR; 1182} 1183 1184status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1185{ 1186 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1187 return BAD_VALUE; 1188 1189 Mutex::Autolock _l(mStateLock); 1190 mCurrentState.freezeDisplay = 0; 1191 setTransactionFlags(eTransactionNeeded); 1192 1193 // flags is intended to communicate some sort of animation behavior 1194 // (for instance fading) 1195 return NO_ERROR; 1196} 1197 1198int SurfaceFlinger::setOrientation(DisplayID dpy, 1199 int orientation, uint32_t flags) 1200{ 1201 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1202 return BAD_VALUE; 1203 1204 Mutex::Autolock _l(mStateLock); 1205 if (mCurrentState.orientation != orientation) { 1206 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1207 mCurrentState.orientationType = flags; 1208 mCurrentState.orientation = orientation; 1209 setTransactionFlags(eTransactionNeeded); 1210 mTransactionCV.wait(mStateLock); 1211 } else { 1212 orientation = BAD_VALUE; 1213 } 1214 } 1215 return orientation; 1216} 1217 1218sp<ISurface> SurfaceFlinger::createSurface(const sp<Client>& client, int pid, 1219 const String8& name, ISurfaceComposerClient::surface_data_t* params, 1220 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1221 uint32_t flags) 1222{ 1223 sp<LayerBaseClient> layer; 1224 sp<LayerBaseClient::Surface> surfaceHandle; 1225 1226 if (int32_t(w|h) < 0) { 1227 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1228 int(w), int(h)); 1229 return surfaceHandle; 1230 } 1231 1232 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1233 sp<Layer> normalLayer; 1234 switch (flags & eFXSurfaceMask) { 1235 case eFXSurfaceNormal: 1236#if HAS_PUSH_BUFFERS 1237 if (UNLIKELY(flags & ePushBuffers)) { 1238 layer = createPushBuffersSurface(client, d, w, h, flags); 1239 } else 1240#endif 1241 { 1242 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1243 layer = normalLayer; 1244 } 1245 break; 1246 case eFXSurfaceBlur: 1247 layer = createBlurSurface(client, d, w, h, flags); 1248 break; 1249 case eFXSurfaceDim: 1250 layer = createDimSurface(client, d, w, h, flags); 1251 break; 1252 } 1253 1254 if (layer != 0) { 1255 layer->initStates(w, h, flags); 1256 layer->setName(name); 1257 ssize_t token = addClientLayer(client, layer); 1258 1259 surfaceHandle = layer->getSurface(); 1260 if (surfaceHandle != 0) { 1261 params->token = token; 1262 params->identity = surfaceHandle->getIdentity(); 1263 params->width = w; 1264 params->height = h; 1265 params->format = format; 1266 if (normalLayer != 0) { 1267 Mutex::Autolock _l(mStateLock); 1268 mLayerMap.add(surfaceHandle->asBinder(), normalLayer); 1269 } 1270 } 1271 1272 setTransactionFlags(eTransactionNeeded); 1273 } 1274 1275 return surfaceHandle; 1276} 1277 1278sp<Layer> SurfaceFlinger::createNormalSurface( 1279 const sp<Client>& client, DisplayID display, 1280 uint32_t w, uint32_t h, uint32_t flags, 1281 PixelFormat& format) 1282{ 1283 // initialize the surfaces 1284 switch (format) { // TODO: take h/w into account 1285 case PIXEL_FORMAT_TRANSPARENT: 1286 case PIXEL_FORMAT_TRANSLUCENT: 1287 format = PIXEL_FORMAT_RGBA_8888; 1288 break; 1289 case PIXEL_FORMAT_OPAQUE: 1290#ifdef NO_RGBX_8888 1291 format = PIXEL_FORMAT_RGB_565; 1292#else 1293 format = PIXEL_FORMAT_RGBX_8888; 1294#endif 1295 break; 1296 } 1297 1298#ifdef NO_RGBX_8888 1299 if (format == PIXEL_FORMAT_RGBX_8888) 1300 format = PIXEL_FORMAT_RGBA_8888; 1301#endif 1302 1303 sp<Layer> layer = new Layer(this, display, client); 1304 status_t err = layer->setBuffers(w, h, format, flags); 1305 if (LIKELY(err != NO_ERROR)) { 1306 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1307 layer.clear(); 1308 } 1309 return layer; 1310} 1311 1312sp<LayerBlur> SurfaceFlinger::createBlurSurface( 1313 const sp<Client>& client, DisplayID display, 1314 uint32_t w, uint32_t h, uint32_t flags) 1315{ 1316 sp<LayerBlur> layer = new LayerBlur(this, display, client); 1317 layer->initStates(w, h, flags); 1318 return layer; 1319} 1320 1321sp<LayerDim> SurfaceFlinger::createDimSurface( 1322 const sp<Client>& client, DisplayID display, 1323 uint32_t w, uint32_t h, uint32_t flags) 1324{ 1325 sp<LayerDim> layer = new LayerDim(this, display, client); 1326 layer->initStates(w, h, flags); 1327 return layer; 1328} 1329 1330sp<LayerBuffer> SurfaceFlinger::createPushBuffersSurface( 1331 const sp<Client>& client, DisplayID display, 1332 uint32_t w, uint32_t h, uint32_t flags) 1333{ 1334 sp<LayerBuffer> layer = new LayerBuffer(this, display, client); 1335 layer->initStates(w, h, flags); 1336 return layer; 1337} 1338 1339status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1340{ 1341 /* 1342 * called by the window manager, when a surface should be marked for 1343 * destruction. 1344 * 1345 * The surface is removed from the current and drawing lists, but placed 1346 * in the purgatory queue, so it's not destroyed right-away (we need 1347 * to wait for all client's references to go away first). 1348 */ 1349 1350 status_t err = NAME_NOT_FOUND; 1351 Mutex::Autolock _l(mStateLock); 1352 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1353 if (layer != 0) { 1354 err = purgatorizeLayer_l(layer); 1355 if (err == NO_ERROR) { 1356 setTransactionFlags(eTransactionNeeded); 1357 } 1358 } 1359 return err; 1360} 1361 1362status_t SurfaceFlinger::destroySurface(const sp<LayerBaseClient>& layer) 1363{ 1364 // called by ~ISurface() when all references are gone 1365 1366 class MessageDestroySurface : public MessageBase { 1367 SurfaceFlinger* flinger; 1368 sp<LayerBaseClient> layer; 1369 public: 1370 MessageDestroySurface( 1371 SurfaceFlinger* flinger, const sp<LayerBaseClient>& layer) 1372 : flinger(flinger), layer(layer) { } 1373 virtual bool handler() { 1374 sp<LayerBaseClient> l(layer); 1375 layer.clear(); // clear it outside of the lock; 1376 Mutex::Autolock _l(flinger->mStateLock); 1377 /* 1378 * remove the layer from the current list -- chances are that it's 1379 * not in the list anyway, because it should have been removed 1380 * already upon request of the client (eg: window manager). 1381 * However, a buggy client could have not done that. 1382 * Since we know we don't have any more clients, we don't need 1383 * to use the purgatory. 1384 */ 1385 status_t err = flinger->removeLayer_l(l); 1386 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1387 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1388 return true; 1389 } 1390 }; 1391 1392 postMessageAsync( new MessageDestroySurface(this, layer) ); 1393 return NO_ERROR; 1394} 1395 1396status_t SurfaceFlinger::setClientState( 1397 const sp<Client>& client, 1398 int32_t count, 1399 const layer_state_t* states) 1400{ 1401 Mutex::Autolock _l(mStateLock); 1402 uint32_t flags = 0; 1403 for (int i=0 ; i<count ; i++) { 1404 const layer_state_t& s(states[i]); 1405 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1406 if (layer != 0) { 1407 const uint32_t what = s.what; 1408 if (what & ePositionChanged) { 1409 if (layer->setPosition(s.x, s.y)) 1410 flags |= eTraversalNeeded; 1411 } 1412 if (what & eLayerChanged) { 1413 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1414 if (layer->setLayer(s.z)) { 1415 mCurrentState.layersSortedByZ.removeAt(idx); 1416 mCurrentState.layersSortedByZ.add(layer); 1417 // we need traversal (state changed) 1418 // AND transaction (list changed) 1419 flags |= eTransactionNeeded|eTraversalNeeded; 1420 } 1421 } 1422 if (what & eSizeChanged) { 1423 if (layer->setSize(s.w, s.h)) { 1424 flags |= eTraversalNeeded; 1425 mResizeTransationPending = true; 1426 } 1427 } 1428 if (what & eAlphaChanged) { 1429 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1430 flags |= eTraversalNeeded; 1431 } 1432 if (what & eMatrixChanged) { 1433 if (layer->setMatrix(s.matrix)) 1434 flags |= eTraversalNeeded; 1435 } 1436 if (what & eTransparentRegionChanged) { 1437 if (layer->setTransparentRegionHint(s.transparentRegion)) 1438 flags |= eTraversalNeeded; 1439 } 1440 if (what & eVisibilityChanged) { 1441 if (layer->setFlags(s.flags, s.mask)) 1442 flags |= eTraversalNeeded; 1443 } 1444 } 1445 } 1446 if (flags) { 1447 setTransactionFlags(flags); 1448 } 1449 return NO_ERROR; 1450} 1451 1452void SurfaceFlinger::screenReleased(int dpy) 1453{ 1454 // this may be called by a signal handler, we can't do too much in here 1455 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1456 signalEvent(); 1457} 1458 1459void SurfaceFlinger::screenAcquired(int dpy) 1460{ 1461 // this may be called by a signal handler, we can't do too much in here 1462 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1463 signalEvent(); 1464} 1465 1466status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1467{ 1468 const size_t SIZE = 1024; 1469 char buffer[SIZE]; 1470 String8 result; 1471 if (!mDump.checkCalling()) { 1472 snprintf(buffer, SIZE, "Permission Denial: " 1473 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1474 IPCThreadState::self()->getCallingPid(), 1475 IPCThreadState::self()->getCallingUid()); 1476 result.append(buffer); 1477 } else { 1478 1479 // figure out if we're stuck somewhere 1480 const nsecs_t now = systemTime(); 1481 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1482 const nsecs_t inTransaction(mDebugInTransaction); 1483 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1484 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1485 1486 // Try to get the main lock, but don't insist if we can't 1487 // (this would indicate SF is stuck, but we want to be able to 1488 // print something in dumpsys). 1489 int retry = 3; 1490 while (mStateLock.tryLock()<0 && --retry>=0) { 1491 usleep(1000000); 1492 } 1493 const bool locked(retry >= 0); 1494 if (!locked) { 1495 snprintf(buffer, SIZE, 1496 "SurfaceFlinger appears to be unresponsive, " 1497 "dumping anyways (no locks held)\n"); 1498 result.append(buffer); 1499 } 1500 1501 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1502 const size_t count = currentLayers.size(); 1503 for (size_t i=0 ; i<count ; i++) { 1504 const sp<LayerBase>& layer(currentLayers[i]); 1505 layer->dump(result, buffer, SIZE); 1506 const Layer::State& s(layer->drawingState()); 1507 s.transparentRegion.dump(result, "transparentRegion"); 1508 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1509 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1510 } 1511 1512 mWormholeRegion.dump(result, "WormholeRegion"); 1513 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1514 snprintf(buffer, SIZE, 1515 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1516 mFreezeDisplay?"yes":"no", mFreezeCount, 1517 mCurrentState.orientation, hw.canDraw()); 1518 result.append(buffer); 1519 snprintf(buffer, SIZE, 1520 " last eglSwapBuffers() time: %f us\n" 1521 " last transaction time : %f us\n", 1522 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1523 result.append(buffer); 1524 1525 if (inSwapBuffersDuration || !locked) { 1526 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1527 inSwapBuffersDuration/1000.0); 1528 result.append(buffer); 1529 } 1530 1531 if (inTransactionDuration || !locked) { 1532 snprintf(buffer, SIZE, " transaction time: %f us\n", 1533 inTransactionDuration/1000.0); 1534 result.append(buffer); 1535 } 1536 1537 HWComposer& hwc(hw.getHwComposer()); 1538 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1539 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1540 mDebugDisableHWC ? "disabled" : "enabled"); 1541 result.append(buffer); 1542 hwc.dump(result, buffer, SIZE); 1543 1544 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1545 alloc.dump(result); 1546 1547 if (locked) { 1548 mStateLock.unlock(); 1549 } 1550 } 1551 write(fd, result.string(), result.size()); 1552 return NO_ERROR; 1553} 1554 1555status_t SurfaceFlinger::onTransact( 1556 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1557{ 1558 switch (code) { 1559 case CREATE_CONNECTION: 1560 case OPEN_GLOBAL_TRANSACTION: 1561 case CLOSE_GLOBAL_TRANSACTION: 1562 case SET_ORIENTATION: 1563 case FREEZE_DISPLAY: 1564 case UNFREEZE_DISPLAY: 1565 case BOOT_FINISHED: 1566 case TURN_ELECTRON_BEAM_OFF: 1567 case TURN_ELECTRON_BEAM_ON: 1568 { 1569 // codes that require permission check 1570 IPCThreadState* ipc = IPCThreadState::self(); 1571 const int pid = ipc->getCallingPid(); 1572 const int uid = ipc->getCallingUid(); 1573 if ((uid != AID_GRAPHICS) && !mAccessSurfaceFlinger.check(pid, uid)) { 1574 LOGE("Permission Denial: " 1575 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1576 return PERMISSION_DENIED; 1577 } 1578 break; 1579 } 1580 case CAPTURE_SCREEN: 1581 { 1582 // codes that require permission check 1583 IPCThreadState* ipc = IPCThreadState::self(); 1584 const int pid = ipc->getCallingPid(); 1585 const int uid = ipc->getCallingUid(); 1586 if ((uid != AID_GRAPHICS) && !mReadFramebuffer.check(pid, uid)) { 1587 LOGE("Permission Denial: " 1588 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1589 return PERMISSION_DENIED; 1590 } 1591 break; 1592 } 1593 } 1594 1595 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1596 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1597 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1598 if (UNLIKELY(!mHardwareTest.checkCalling())) { 1599 IPCThreadState* ipc = IPCThreadState::self(); 1600 const int pid = ipc->getCallingPid(); 1601 const int uid = ipc->getCallingUid(); 1602 LOGE("Permission Denial: " 1603 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1604 return PERMISSION_DENIED; 1605 } 1606 int n; 1607 switch (code) { 1608 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1609 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1610 return NO_ERROR; 1611 case 1002: // SHOW_UPDATES 1612 n = data.readInt32(); 1613 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1614 return NO_ERROR; 1615 case 1003: // SHOW_BACKGROUND 1616 n = data.readInt32(); 1617 mDebugBackground = n ? 1 : 0; 1618 return NO_ERROR; 1619 case 1008: // toggle use of hw composer 1620 n = data.readInt32(); 1621 mDebugDisableHWC = n ? 1 : 0; 1622 mHwWorkListDirty = true; 1623 // fall-through... 1624 case 1004:{ // repaint everything 1625 Mutex::Autolock _l(mStateLock); 1626 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1627 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1628 signalEvent(); 1629 return NO_ERROR; 1630 } 1631 case 1005:{ // force transaction 1632 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1633 return NO_ERROR; 1634 } 1635 case 1006:{ // enable/disable GraphicLog 1636 int enabled = data.readInt32(); 1637 GraphicLog::getInstance().setEnabled(enabled); 1638 return NO_ERROR; 1639 } 1640 case 1007: // set mFreezeCount 1641 mFreezeCount = data.readInt32(); 1642 mFreezeDisplayTime = 0; 1643 return NO_ERROR; 1644 case 1010: // interrogate. 1645 reply->writeInt32(0); 1646 reply->writeInt32(0); 1647 reply->writeInt32(mDebugRegion); 1648 reply->writeInt32(mDebugBackground); 1649 return NO_ERROR; 1650 case 1013: { 1651 Mutex::Autolock _l(mStateLock); 1652 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1653 reply->writeInt32(hw.getPageFlipCount()); 1654 } 1655 return NO_ERROR; 1656 } 1657 } 1658 return err; 1659} 1660 1661// --------------------------------------------------------------------------- 1662 1663status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1664 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1665{ 1666 if (!GLExtensions::getInstance().haveFramebufferObject()) 1667 return INVALID_OPERATION; 1668 1669 // get screen geometry 1670 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1671 const uint32_t hw_w = hw.getWidth(); 1672 const uint32_t hw_h = hw.getHeight(); 1673 GLfloat u = 1; 1674 GLfloat v = 1; 1675 1676 // make sure to clear all GL error flags 1677 while ( glGetError() != GL_NO_ERROR ) ; 1678 1679 // create a FBO 1680 GLuint name, tname; 1681 glGenTextures(1, &tname); 1682 glBindTexture(GL_TEXTURE_2D, tname); 1683 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1684 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1685 if (glGetError() != GL_NO_ERROR) { 1686 GLint tw = (2 << (31 - clz(hw_w))); 1687 GLint th = (2 << (31 - clz(hw_h))); 1688 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1689 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1690 u = GLfloat(hw_w) / tw; 1691 v = GLfloat(hw_h) / th; 1692 } 1693 glGenFramebuffersOES(1, &name); 1694 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1695 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1696 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1697 1698 // redraw the screen entirely... 1699 glClearColor(0,0,0,1); 1700 glClear(GL_COLOR_BUFFER_BIT); 1701 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1702 const size_t count = layers.size(); 1703 for (size_t i=0 ; i<count ; ++i) { 1704 const sp<LayerBase>& layer(layers[i]); 1705 layer->drawForSreenShot(); 1706 } 1707 1708 // back to main framebuffer 1709 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1710 glDisable(GL_SCISSOR_TEST); 1711 glDeleteFramebuffersOES(1, &name); 1712 1713 *textureName = tname; 1714 *uOut = u; 1715 *vOut = v; 1716 return NO_ERROR; 1717} 1718 1719// --------------------------------------------------------------------------- 1720 1721status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1722{ 1723 status_t result = PERMISSION_DENIED; 1724 1725 if (!GLExtensions::getInstance().haveFramebufferObject()) 1726 return INVALID_OPERATION; 1727 1728 // get screen geometry 1729 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1730 const uint32_t hw_w = hw.getWidth(); 1731 const uint32_t hw_h = hw.getHeight(); 1732 const Region screenBounds(hw.bounds()); 1733 1734 GLfloat u, v; 1735 GLuint tname; 1736 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1737 if (result != NO_ERROR) { 1738 return result; 1739 } 1740 1741 GLfloat vtx[8]; 1742 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1743 glEnable(GL_TEXTURE_2D); 1744 glBindTexture(GL_TEXTURE_2D, tname); 1745 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1746 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1747 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1748 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1749 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1750 glVertexPointer(2, GL_FLOAT, 0, vtx); 1751 1752 class s_curve_interpolator { 1753 const float nbFrames, s, v; 1754 public: 1755 s_curve_interpolator(int nbFrames, float s) 1756 : nbFrames(1.0f / (nbFrames-1)), s(s), 1757 v(1.0f + expf(-s + 0.5f*s)) { 1758 } 1759 float operator()(int f) { 1760 const float x = f * nbFrames; 1761 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1762 } 1763 }; 1764 1765 class v_stretch { 1766 const GLfloat hw_w, hw_h; 1767 public: 1768 v_stretch(uint32_t hw_w, uint32_t hw_h) 1769 : hw_w(hw_w), hw_h(hw_h) { 1770 } 1771 void operator()(GLfloat* vtx, float v) { 1772 const GLfloat w = hw_w + (hw_w * v); 1773 const GLfloat h = hw_h - (hw_h * v); 1774 const GLfloat x = (hw_w - w) * 0.5f; 1775 const GLfloat y = (hw_h - h) * 0.5f; 1776 vtx[0] = x; vtx[1] = y; 1777 vtx[2] = x; vtx[3] = y + h; 1778 vtx[4] = x + w; vtx[5] = y + h; 1779 vtx[6] = x + w; vtx[7] = y; 1780 } 1781 }; 1782 1783 class h_stretch { 1784 const GLfloat hw_w, hw_h; 1785 public: 1786 h_stretch(uint32_t hw_w, uint32_t hw_h) 1787 : hw_w(hw_w), hw_h(hw_h) { 1788 } 1789 void operator()(GLfloat* vtx, float v) { 1790 const GLfloat w = hw_w - (hw_w * v); 1791 const GLfloat h = 1.0f; 1792 const GLfloat x = (hw_w - w) * 0.5f; 1793 const GLfloat y = (hw_h - h) * 0.5f; 1794 vtx[0] = x; vtx[1] = y; 1795 vtx[2] = x; vtx[3] = y + h; 1796 vtx[4] = x + w; vtx[5] = y + h; 1797 vtx[6] = x + w; vtx[7] = y; 1798 } 1799 }; 1800 1801 // the full animation is 24 frames 1802 const int nbFrames = 12; 1803 s_curve_interpolator itr(nbFrames, 7.5f); 1804 s_curve_interpolator itg(nbFrames, 8.0f); 1805 s_curve_interpolator itb(nbFrames, 8.5f); 1806 1807 v_stretch vverts(hw_w, hw_h); 1808 glEnable(GL_BLEND); 1809 glBlendFunc(GL_ONE, GL_ONE); 1810 for (int i=0 ; i<nbFrames ; i++) { 1811 float x, y, w, h; 1812 const float vr = itr(i); 1813 const float vg = itg(i); 1814 const float vb = itb(i); 1815 1816 // clear screen 1817 glColorMask(1,1,1,1); 1818 glClear(GL_COLOR_BUFFER_BIT); 1819 glEnable(GL_TEXTURE_2D); 1820 1821 // draw the red plane 1822 vverts(vtx, vr); 1823 glColorMask(1,0,0,1); 1824 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1825 1826 // draw the green plane 1827 vverts(vtx, vg); 1828 glColorMask(0,1,0,1); 1829 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1830 1831 // draw the blue plane 1832 vverts(vtx, vb); 1833 glColorMask(0,0,1,1); 1834 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1835 1836 // draw the white highlight (we use the last vertices) 1837 glDisable(GL_TEXTURE_2D); 1838 glColorMask(1,1,1,1); 1839 glColor4f(vg, vg, vg, 1); 1840 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1841 hw.flip(screenBounds); 1842 } 1843 1844 h_stretch hverts(hw_w, hw_h); 1845 glDisable(GL_BLEND); 1846 glDisable(GL_TEXTURE_2D); 1847 glColorMask(1,1,1,1); 1848 for (int i=0 ; i<nbFrames ; i++) { 1849 const float v = itg(i); 1850 hverts(vtx, v); 1851 glClear(GL_COLOR_BUFFER_BIT); 1852 glColor4f(1-v, 1-v, 1-v, 1); 1853 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1854 hw.flip(screenBounds); 1855 } 1856 1857 glColorMask(1,1,1,1); 1858 glEnable(GL_SCISSOR_TEST); 1859 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1860 glDeleteTextures(1, &tname); 1861 return NO_ERROR; 1862} 1863 1864status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1865{ 1866 status_t result = PERMISSION_DENIED; 1867 1868 if (!GLExtensions::getInstance().haveFramebufferObject()) 1869 return INVALID_OPERATION; 1870 1871 1872 // get screen geometry 1873 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1874 const uint32_t hw_w = hw.getWidth(); 1875 const uint32_t hw_h = hw.getHeight(); 1876 const Region screenBounds(hw.bounds()); 1877 1878 GLfloat u, v; 1879 GLuint tname; 1880 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1881 if (result != NO_ERROR) { 1882 return result; 1883 } 1884 1885 // back to main framebuffer 1886 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1887 glDisable(GL_SCISSOR_TEST); 1888 1889 GLfloat vtx[8]; 1890 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1891 glEnable(GL_TEXTURE_2D); 1892 glBindTexture(GL_TEXTURE_2D, tname); 1893 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 1894 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1895 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1896 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1897 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1898 glVertexPointer(2, GL_FLOAT, 0, vtx); 1899 1900 class s_curve_interpolator { 1901 const float nbFrames, s, v; 1902 public: 1903 s_curve_interpolator(int nbFrames, float s) 1904 : nbFrames(1.0f / (nbFrames-1)), s(s), 1905 v(1.0f + expf(-s + 0.5f*s)) { 1906 } 1907 float operator()(int f) { 1908 const float x = f * nbFrames; 1909 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1910 } 1911 }; 1912 1913 class v_stretch { 1914 const GLfloat hw_w, hw_h; 1915 public: 1916 v_stretch(uint32_t hw_w, uint32_t hw_h) 1917 : hw_w(hw_w), hw_h(hw_h) { 1918 } 1919 void operator()(GLfloat* vtx, float v) { 1920 const GLfloat w = hw_w + (hw_w * v); 1921 const GLfloat h = hw_h - (hw_h * v); 1922 const GLfloat x = (hw_w - w) * 0.5f; 1923 const GLfloat y = (hw_h - h) * 0.5f; 1924 vtx[0] = x; vtx[1] = y; 1925 vtx[2] = x; vtx[3] = y + h; 1926 vtx[4] = x + w; vtx[5] = y + h; 1927 vtx[6] = x + w; vtx[7] = y; 1928 } 1929 }; 1930 1931 class h_stretch { 1932 const GLfloat hw_w, hw_h; 1933 public: 1934 h_stretch(uint32_t hw_w, uint32_t hw_h) 1935 : hw_w(hw_w), hw_h(hw_h) { 1936 } 1937 void operator()(GLfloat* vtx, float v) { 1938 const GLfloat w = hw_w - (hw_w * v); 1939 const GLfloat h = 1.0f; 1940 const GLfloat x = (hw_w - w) * 0.5f; 1941 const GLfloat y = (hw_h - h) * 0.5f; 1942 vtx[0] = x; vtx[1] = y; 1943 vtx[2] = x; vtx[3] = y + h; 1944 vtx[4] = x + w; vtx[5] = y + h; 1945 vtx[6] = x + w; vtx[7] = y; 1946 } 1947 }; 1948 1949 // the full animation is 24 frames 1950 const int nbFrames = 12; 1951 s_curve_interpolator itr(nbFrames, 7.5f); 1952 s_curve_interpolator itg(nbFrames, 8.0f); 1953 s_curve_interpolator itb(nbFrames, 8.5f); 1954 1955 h_stretch hverts(hw_w, hw_h); 1956 glDisable(GL_BLEND); 1957 glDisable(GL_TEXTURE_2D); 1958 glColorMask(1,1,1,1); 1959 for (int i=nbFrames-1 ; i>=0 ; i--) { 1960 const float v = itg(i); 1961 hverts(vtx, v); 1962 glClear(GL_COLOR_BUFFER_BIT); 1963 glColor4f(1-v, 1-v, 1-v, 1); 1964 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1965 hw.flip(screenBounds); 1966 } 1967 1968 v_stretch vverts(hw_w, hw_h); 1969 glEnable(GL_BLEND); 1970 glBlendFunc(GL_ONE, GL_ONE); 1971 for (int i=nbFrames-1 ; i>=0 ; i--) { 1972 float x, y, w, h; 1973 const float vr = itr(i); 1974 const float vg = itg(i); 1975 const float vb = itb(i); 1976 1977 // clear screen 1978 glColorMask(1,1,1,1); 1979 glClear(GL_COLOR_BUFFER_BIT); 1980 glEnable(GL_TEXTURE_2D); 1981 1982 // draw the red plane 1983 vverts(vtx, vr); 1984 glColorMask(1,0,0,1); 1985 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1986 1987 // draw the green plane 1988 vverts(vtx, vg); 1989 glColorMask(0,1,0,1); 1990 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1991 1992 // draw the blue plane 1993 vverts(vtx, vb); 1994 glColorMask(0,0,1,1); 1995 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1996 1997 hw.flip(screenBounds); 1998 } 1999 2000 glColorMask(1,1,1,1); 2001 glEnable(GL_SCISSOR_TEST); 2002 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2003 glDeleteTextures(1, &tname); 2004 2005 return NO_ERROR; 2006} 2007 2008// --------------------------------------------------------------------------- 2009 2010status_t SurfaceFlinger::turnElectronBeamOffImplLocked() 2011{ 2012 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2013 if (!hw.canDraw()) { 2014 // we're already off 2015 return NO_ERROR; 2016 } 2017 status_t result = electronBeamOffAnimationImplLocked(); 2018 if (result == NO_ERROR) { 2019 hw.setCanDraw(false); 2020 } 2021 return result; 2022} 2023 2024status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2025{ 2026 if (!GLExtensions::getInstance().haveFramebufferObject()) 2027 return INVALID_OPERATION; 2028 2029 class MessageTurnElectronBeamOff : public MessageBase { 2030 SurfaceFlinger* flinger; 2031 status_t result; 2032 public: 2033 MessageTurnElectronBeamOff(SurfaceFlinger* flinger) 2034 : flinger(flinger), result(PERMISSION_DENIED) { 2035 } 2036 status_t getResult() const { 2037 return result; 2038 } 2039 virtual bool handler() { 2040 Mutex::Autolock _l(flinger->mStateLock); 2041 result = flinger->turnElectronBeamOffImplLocked(); 2042 return true; 2043 } 2044 }; 2045 2046 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this); 2047 status_t res = postMessageSync(msg); 2048 if (res == NO_ERROR) { 2049 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2050 2051 // work-around: when the power-manager calls us we activate the 2052 // animation. eventually, the "on" animation will be called 2053 // by the power-manager itself 2054 mElectronBeamAnimation = true; 2055 } 2056 return res; 2057} 2058 2059// --------------------------------------------------------------------------- 2060 2061status_t SurfaceFlinger::turnElectronBeamOnImplLocked() 2062{ 2063 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2064 if (hw.canDraw()) { 2065 // we're already on 2066 return NO_ERROR; 2067 } 2068 status_t result = electronBeamOnAnimationImplLocked(); 2069 if (result == NO_ERROR) { 2070 hw.setCanDraw(true); 2071 } 2072 return result; 2073} 2074 2075status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2076{ 2077 if (!GLExtensions::getInstance().haveFramebufferObject()) 2078 return INVALID_OPERATION; 2079 2080 class MessageTurnElectronBeamOn : public MessageBase { 2081 SurfaceFlinger* flinger; 2082 status_t result; 2083 public: 2084 MessageTurnElectronBeamOn(SurfaceFlinger* flinger) 2085 : flinger(flinger), result(PERMISSION_DENIED) { 2086 } 2087 status_t getResult() const { 2088 return result; 2089 } 2090 virtual bool handler() { 2091 Mutex::Autolock _l(flinger->mStateLock); 2092 result = flinger->turnElectronBeamOnImplLocked(); 2093 return true; 2094 } 2095 }; 2096 2097 postMessageAsync( new MessageTurnElectronBeamOn(this) ); 2098 return NO_ERROR; 2099} 2100 2101// --------------------------------------------------------------------------- 2102 2103status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2104 sp<IMemoryHeap>* heap, 2105 uint32_t* w, uint32_t* h, PixelFormat* f, 2106 uint32_t sw, uint32_t sh) 2107{ 2108 status_t result = PERMISSION_DENIED; 2109 2110 // only one display supported for now 2111 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2112 return BAD_VALUE; 2113 2114 if (!GLExtensions::getInstance().haveFramebufferObject()) 2115 return INVALID_OPERATION; 2116 2117 // get screen geometry 2118 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2119 const uint32_t hw_w = hw.getWidth(); 2120 const uint32_t hw_h = hw.getHeight(); 2121 2122 if ((sw > hw_w) || (sh > hw_h)) 2123 return BAD_VALUE; 2124 2125 sw = (!sw) ? hw_w : sw; 2126 sh = (!sh) ? hw_h : sh; 2127 const size_t size = sw * sh * 4; 2128 2129 // make sure to clear all GL error flags 2130 while ( glGetError() != GL_NO_ERROR ) ; 2131 2132 // create a FBO 2133 GLuint name, tname; 2134 glGenRenderbuffersOES(1, &tname); 2135 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2136 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2137 glGenFramebuffersOES(1, &name); 2138 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2139 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2140 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2141 2142 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 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, 0, hw_h, 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 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 2157 const size_t count = layers.size(); 2158 for (size_t i=0 ; i<count ; ++i) { 2159 const sp<LayerBase>& layer(layers[i]); 2160 layer->drawForSreenShot(); 2161 } 2162 2163 // XXX: this is needed on tegra 2164 glScissor(0, 0, sw, sh); 2165 2166 // check for errors and return screen capture 2167 if (glGetError() != GL_NO_ERROR) { 2168 // error while rendering 2169 result = INVALID_OPERATION; 2170 } else { 2171 // allocate shared memory large enough to hold the 2172 // screen capture 2173 sp<MemoryHeapBase> base( 2174 new MemoryHeapBase(size, 0, "screen-capture") ); 2175 void* const ptr = base->getBase(); 2176 if (ptr) { 2177 // capture the screen with glReadPixels() 2178 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2179 if (glGetError() == GL_NO_ERROR) { 2180 *heap = base; 2181 *w = sw; 2182 *h = sh; 2183 *f = PIXEL_FORMAT_RGBA_8888; 2184 result = NO_ERROR; 2185 } 2186 } else { 2187 result = NO_MEMORY; 2188 } 2189 } 2190 2191 glEnable(GL_SCISSOR_TEST); 2192 glViewport(0, 0, hw_w, hw_h); 2193 glMatrixMode(GL_PROJECTION); 2194 glPopMatrix(); 2195 glMatrixMode(GL_MODELVIEW); 2196 2197 2198 } else { 2199 result = BAD_VALUE; 2200 } 2201 2202 // release FBO resources 2203 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2204 glDeleteRenderbuffersOES(1, &tname); 2205 glDeleteFramebuffersOES(1, &name); 2206 return result; 2207} 2208 2209 2210status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2211 sp<IMemoryHeap>* heap, 2212 uint32_t* width, uint32_t* height, PixelFormat* format, 2213 uint32_t sw, uint32_t sh) 2214{ 2215 // only one display supported for now 2216 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2217 return BAD_VALUE; 2218 2219 if (!GLExtensions::getInstance().haveFramebufferObject()) 2220 return INVALID_OPERATION; 2221 2222 class MessageCaptureScreen : public MessageBase { 2223 SurfaceFlinger* flinger; 2224 DisplayID dpy; 2225 sp<IMemoryHeap>* heap; 2226 uint32_t* w; 2227 uint32_t* h; 2228 PixelFormat* f; 2229 uint32_t sw; 2230 uint32_t sh; 2231 status_t result; 2232 public: 2233 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2234 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2235 uint32_t sw, uint32_t sh) 2236 : flinger(flinger), dpy(dpy), 2237 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), result(PERMISSION_DENIED) 2238 { 2239 } 2240 status_t getResult() const { 2241 return result; 2242 } 2243 virtual bool handler() { 2244 Mutex::Autolock _l(flinger->mStateLock); 2245 2246 // if we have secure windows, never allow the screen capture 2247 if (flinger->mSecureFrameBuffer) 2248 return true; 2249 2250 result = flinger->captureScreenImplLocked(dpy, 2251 heap, w, h, f, sw, sh); 2252 2253 return true; 2254 } 2255 }; 2256 2257 sp<MessageBase> msg = new MessageCaptureScreen(this, 2258 dpy, heap, width, height, format, sw, sh); 2259 status_t res = postMessageSync(msg); 2260 if (res == NO_ERROR) { 2261 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2262 } 2263 return res; 2264} 2265 2266// --------------------------------------------------------------------------- 2267 2268sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2269{ 2270 sp<Layer> result; 2271 Mutex::Autolock _l(mStateLock); 2272 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2273 return result; 2274} 2275 2276// --------------------------------------------------------------------------- 2277 2278Client::Client(const sp<SurfaceFlinger>& flinger) 2279 : mFlinger(flinger), mNameGenerator(1) 2280{ 2281} 2282 2283Client::~Client() 2284{ 2285 const size_t count = mLayers.size(); 2286 for (size_t i=0 ; i<count ; i++) { 2287 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2288 if (layer != 0) { 2289 mFlinger->removeLayer(layer); 2290 } 2291 } 2292} 2293 2294status_t Client::initCheck() const { 2295 return NO_ERROR; 2296} 2297 2298ssize_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2299{ 2300 int32_t name = android_atomic_inc(&mNameGenerator); 2301 mLayers.add(name, layer); 2302 return name; 2303} 2304 2305void Client::detachLayer(const LayerBaseClient* layer) 2306{ 2307 // we do a linear search here, because this doesn't happen often 2308 const size_t count = mLayers.size(); 2309 for (size_t i=0 ; i<count ; i++) { 2310 if (mLayers.valueAt(i) == layer) { 2311 mLayers.removeItemsAt(i, 1); 2312 break; 2313 } 2314 } 2315} 2316sp<LayerBaseClient> Client::getLayerUser(int32_t i) const { 2317 sp<LayerBaseClient> lbc; 2318 const wp<LayerBaseClient>& layer(mLayers.valueFor(i)); 2319 if (layer != 0) { 2320 lbc = layer.promote(); 2321 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2322 } 2323 return lbc; 2324} 2325 2326sp<IMemoryHeap> Client::getControlBlock() const { 2327 return 0; 2328} 2329ssize_t Client::getTokenForSurface(const sp<ISurface>& sur) const { 2330 return -1; 2331} 2332sp<ISurface> Client::createSurface( 2333 ISurfaceComposerClient::surface_data_t* params, int pid, 2334 const String8& name, 2335 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2336 uint32_t flags) 2337{ 2338 return mFlinger->createSurface(this, pid, name, params, 2339 display, w, h, format, flags); 2340} 2341status_t Client::destroySurface(SurfaceID sid) { 2342 return mFlinger->removeSurface(this, sid); 2343} 2344status_t Client::setState(int32_t count, const layer_state_t* states) { 2345 return mFlinger->setClientState(this, count, states); 2346} 2347 2348// --------------------------------------------------------------------------- 2349 2350UserClient::UserClient(const sp<SurfaceFlinger>& flinger) 2351 : ctrlblk(0), mBitmap(0), mFlinger(flinger) 2352{ 2353 const int pgsize = getpagesize(); 2354 const int cblksize = ((sizeof(SharedClient)+(pgsize-1))&~(pgsize-1)); 2355 2356 mCblkHeap = new MemoryHeapBase(cblksize, 0, 2357 "SurfaceFlinger Client control-block"); 2358 2359 ctrlblk = static_cast<SharedClient *>(mCblkHeap->getBase()); 2360 if (ctrlblk) { // construct the shared structure in-place. 2361 new(ctrlblk) SharedClient; 2362 } 2363} 2364 2365UserClient::~UserClient() 2366{ 2367 if (ctrlblk) { 2368 ctrlblk->~SharedClient(); // destroy our shared-structure. 2369 } 2370 2371 /* 2372 * When a UserClient dies, it's unclear what to do exactly. 2373 * We could go ahead and destroy all surfaces linked to that client 2374 * however, it wouldn't be fair to the main Client 2375 * (usually the the window-manager), which might want to re-target 2376 * the layer to another UserClient. 2377 * I think the best is to do nothing, or not much; in most cases the 2378 * WM itself will go ahead and clean things up when it detects a client of 2379 * his has died. 2380 * The remaining question is what to display? currently we keep 2381 * just keep the current buffer. 2382 */ 2383} 2384 2385status_t UserClient::initCheck() const { 2386 return ctrlblk == 0 ? NO_INIT : NO_ERROR; 2387} 2388 2389void UserClient::detachLayer(const Layer* layer) 2390{ 2391 int32_t name = layer->getToken(); 2392 if (name >= 0) { 2393 int32_t mask = 1LU<<name; 2394 if ((android_atomic_and(~mask, &mBitmap) & mask) == 0) { 2395 LOGW("token %d wasn't marked as used %08x", name, int(mBitmap)); 2396 } 2397 } 2398} 2399 2400sp<IMemoryHeap> UserClient::getControlBlock() const { 2401 return mCblkHeap; 2402} 2403 2404ssize_t UserClient::getTokenForSurface(const sp<ISurface>& sur) const 2405{ 2406 int32_t name = NAME_NOT_FOUND; 2407 sp<Layer> layer(mFlinger->getLayer(sur)); 2408 if (layer == 0) { 2409 return name; 2410 } 2411 2412 // if this layer already has a token, just return it 2413 name = layer->getToken(); 2414 if ((name >= 0) && (layer->getClient() == this)) { 2415 return name; 2416 } 2417 2418 name = 0; 2419 do { 2420 int32_t mask = 1LU<<name; 2421 if ((android_atomic_or(mask, &mBitmap) & mask) == 0) { 2422 // we found and locked that name 2423 status_t err = layer->setToken( 2424 const_cast<UserClient*>(this), ctrlblk, name); 2425 if (err != NO_ERROR) { 2426 // free the name 2427 android_atomic_and(~mask, &mBitmap); 2428 name = err; 2429 } 2430 break; 2431 } 2432 if (++name > 31) 2433 name = NO_MEMORY; 2434 } while(name >= 0); 2435 2436 //LOGD("getTokenForSurface(%p) => %d (client=%p, bitmap=%08lx)", 2437 // sur->asBinder().get(), name, this, mBitmap); 2438 return name; 2439} 2440 2441sp<ISurface> UserClient::createSurface( 2442 ISurfaceComposerClient::surface_data_t* params, int pid, 2443 const String8& name, 2444 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2445 uint32_t flags) { 2446 return 0; 2447} 2448status_t UserClient::destroySurface(SurfaceID sid) { 2449 return INVALID_OPERATION; 2450} 2451status_t UserClient::setState(int32_t count, const layer_state_t* states) { 2452 return INVALID_OPERATION; 2453} 2454 2455// --------------------------------------------------------------------------- 2456 2457GraphicPlane::GraphicPlane() 2458 : mHw(0) 2459{ 2460} 2461 2462GraphicPlane::~GraphicPlane() { 2463 delete mHw; 2464} 2465 2466bool GraphicPlane::initialized() const { 2467 return mHw ? true : false; 2468} 2469 2470int GraphicPlane::getWidth() const { 2471 return mWidth; 2472} 2473 2474int GraphicPlane::getHeight() const { 2475 return mHeight; 2476} 2477 2478void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2479{ 2480 mHw = hw; 2481 2482 // initialize the display orientation transform. 2483 // it's a constant that should come from the display driver. 2484 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2485 char property[PROPERTY_VALUE_MAX]; 2486 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2487 //displayOrientation 2488 switch (atoi(property)) { 2489 case 90: 2490 displayOrientation = ISurfaceComposer::eOrientation90; 2491 break; 2492 case 270: 2493 displayOrientation = ISurfaceComposer::eOrientation270; 2494 break; 2495 } 2496 } 2497 2498 const float w = hw->getWidth(); 2499 const float h = hw->getHeight(); 2500 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2501 &mDisplayTransform); 2502 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2503 mDisplayWidth = h; 2504 mDisplayHeight = w; 2505 } else { 2506 mDisplayWidth = w; 2507 mDisplayHeight = h; 2508 } 2509 2510 setOrientation(ISurfaceComposer::eOrientationDefault); 2511} 2512 2513status_t GraphicPlane::orientationToTransfrom( 2514 int orientation, int w, int h, Transform* tr) 2515{ 2516 uint32_t flags = 0; 2517 switch (orientation) { 2518 case ISurfaceComposer::eOrientationDefault: 2519 flags = Transform::ROT_0; 2520 break; 2521 case ISurfaceComposer::eOrientation90: 2522 flags = Transform::ROT_90; 2523 break; 2524 case ISurfaceComposer::eOrientation180: 2525 flags = Transform::ROT_180; 2526 break; 2527 case ISurfaceComposer::eOrientation270: 2528 flags = Transform::ROT_270; 2529 break; 2530 default: 2531 return BAD_VALUE; 2532 } 2533 tr->set(flags, w, h); 2534 return NO_ERROR; 2535} 2536 2537status_t GraphicPlane::setOrientation(int orientation) 2538{ 2539 // If the rotation can be handled in hardware, this is where 2540 // the magic should happen. 2541 2542 const DisplayHardware& hw(displayHardware()); 2543 const float w = mDisplayWidth; 2544 const float h = mDisplayHeight; 2545 mWidth = int(w); 2546 mHeight = int(h); 2547 2548 Transform orientationTransform; 2549 GraphicPlane::orientationToTransfrom(orientation, w, h, 2550 &orientationTransform); 2551 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2552 mWidth = int(h); 2553 mHeight = int(w); 2554 } 2555 2556 mOrientation = orientation; 2557 mGlobalTransform = mDisplayTransform * orientationTransform; 2558 return NO_ERROR; 2559} 2560 2561const DisplayHardware& GraphicPlane::displayHardware() const { 2562 return *mHw; 2563} 2564 2565DisplayHardware& GraphicPlane::editDisplayHardware() { 2566 return *mHw; 2567} 2568 2569const Transform& GraphicPlane::transform() const { 2570 return mGlobalTransform; 2571} 2572 2573EGLDisplay GraphicPlane::getEGLDisplay() const { 2574 return mHw->getEGLDisplay(); 2575} 2576 2577// --------------------------------------------------------------------------- 2578 2579}; // namespace android 2580