SurfaceFlinger.cpp revision 8a08392833a2db80aef20fba8a43f0829a096e13
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 57/* ideally AID_GRAPHICS would be in a semi-public header 58 * or there would be a way to map a user/group name to its id 59 */ 60#ifndef AID_GRAPHICS 61#define AID_GRAPHICS 1003 62#endif 63 64#ifdef USE_COMPOSITION_BYPASS 65#warning "using COMPOSITION_BYPASS" 66#endif 67 68#define DISPLAY_COUNT 1 69 70namespace android { 71// --------------------------------------------------------------------------- 72 73SurfaceFlinger::SurfaceFlinger() 74 : BnSurfaceComposer(), Thread(false), 75 mTransactionFlags(0), 76 mTransactionCount(0), 77 mResizeTransationPending(false), 78 mLayersRemoved(false), 79 mBootTime(systemTime()), 80 mHardwareTest("android.permission.HARDWARE_TEST"), 81 mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"), 82 mReadFramebuffer("android.permission.READ_FRAME_BUFFER"), 83 mDump("android.permission.DUMP"), 84 mVisibleRegionsDirty(false), 85 mDeferReleaseConsole(false), 86 mFreezeDisplay(false), 87 mElectronBeamAnimationMode(0), 88 mFreezeCount(0), 89 mFreezeDisplayTime(0), 90 mDebugRegion(0), 91 mDebugBackground(0), 92 mDebugInSwapBuffers(0), 93 mLastSwapBufferTime(0), 94 mDebugInTransaction(0), 95 mLastTransactionTime(0), 96 mBootFinished(false), 97 mConsoleSignals(0), 98 mSecureFrameBuffer(0) 99{ 100 init(); 101} 102 103void SurfaceFlinger::init() 104{ 105 LOGI("SurfaceFlinger is starting"); 106 107 // debugging stuff... 108 char value[PROPERTY_VALUE_MAX]; 109 property_get("debug.sf.showupdates", value, "0"); 110 mDebugRegion = atoi(value); 111 property_get("debug.sf.showbackground", value, "0"); 112 mDebugBackground = atoi(value); 113 114 LOGI_IF(mDebugRegion, "showupdates enabled"); 115 LOGI_IF(mDebugBackground, "showbackground enabled"); 116} 117 118SurfaceFlinger::~SurfaceFlinger() 119{ 120 glDeleteTextures(1, &mWormholeTexName); 121} 122 123overlay_control_device_t* SurfaceFlinger::getOverlayEngine() const 124{ 125 return graphicPlane(0).displayHardware().getOverlayEngine(); 126} 127 128sp<IMemoryHeap> SurfaceFlinger::getCblk() const 129{ 130 return mServerHeap; 131} 132 133sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 134{ 135 sp<ISurfaceComposerClient> bclient; 136 sp<Client> client(new Client(this)); 137 status_t err = client->initCheck(); 138 if (err == NO_ERROR) { 139 bclient = client; 140 } 141 return bclient; 142} 143 144sp<ISurfaceComposerClient> SurfaceFlinger::createClientConnection() 145{ 146 sp<ISurfaceComposerClient> bclient; 147 sp<UserClient> client(new UserClient(this)); 148 status_t err = client->initCheck(); 149 if (err == NO_ERROR) { 150 bclient = client; 151 } 152 return bclient; 153} 154 155 156const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 157{ 158 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 159 const GraphicPlane& plane(mGraphicPlanes[dpy]); 160 return plane; 161} 162 163GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 164{ 165 return const_cast<GraphicPlane&>( 166 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 167} 168 169void SurfaceFlinger::bootFinished() 170{ 171 const nsecs_t now = systemTime(); 172 const nsecs_t duration = now - mBootTime; 173 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 174 mBootFinished = true; 175 property_set("ctl.stop", "bootanim"); 176} 177 178void SurfaceFlinger::onFirstRef() 179{ 180 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 181 182 // Wait for the main thread to be done with its initialization 183 mReadyToRunBarrier.wait(); 184} 185 186static inline uint16_t pack565(int r, int g, int b) { 187 return (r<<11)|(g<<5)|b; 188} 189 190status_t SurfaceFlinger::readyToRun() 191{ 192 LOGI( "SurfaceFlinger's main thread ready to run. " 193 "Initializing graphics H/W..."); 194 195 // we only support one display currently 196 int dpy = 0; 197 198 { 199 // initialize the main display 200 GraphicPlane& plane(graphicPlane(dpy)); 201 DisplayHardware* const hw = new DisplayHardware(this, dpy); 202 plane.setDisplayHardware(hw); 203 } 204 205 // create the shared control-block 206 mServerHeap = new MemoryHeapBase(4096, 207 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 208 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 209 210 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 211 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 212 213 new(mServerCblk) surface_flinger_cblk_t; 214 215 // initialize primary screen 216 // (other display should be initialized in the same manner, but 217 // asynchronously, as they could come and go. None of this is supported 218 // yet). 219 const GraphicPlane& plane(graphicPlane(dpy)); 220 const DisplayHardware& hw = plane.displayHardware(); 221 const uint32_t w = hw.getWidth(); 222 const uint32_t h = hw.getHeight(); 223 const uint32_t f = hw.getFormat(); 224 hw.makeCurrent(); 225 226 // initialize the shared control block 227 mServerCblk->connected |= 1<<dpy; 228 display_cblk_t* dcblk = mServerCblk->displays + dpy; 229 memset(dcblk, 0, sizeof(display_cblk_t)); 230 dcblk->w = plane.getWidth(); 231 dcblk->h = plane.getHeight(); 232 dcblk->format = f; 233 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 234 dcblk->xdpi = hw.getDpiX(); 235 dcblk->ydpi = hw.getDpiY(); 236 dcblk->fps = hw.getRefreshRate(); 237 dcblk->density = hw.getDensity(); 238 239 // Initialize OpenGL|ES 240 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 241 glPixelStorei(GL_PACK_ALIGNMENT, 4); 242 glEnableClientState(GL_VERTEX_ARRAY); 243 glEnable(GL_SCISSOR_TEST); 244 glShadeModel(GL_FLAT); 245 glDisable(GL_DITHER); 246 glDisable(GL_CULL_FACE); 247 248 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 249 const uint16_t g1 = pack565(0x17,0x2f,0x17); 250 const uint16_t textureData[4] = { g0, g1, g1, g0 }; 251 glGenTextures(1, &mWormholeTexName); 252 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 253 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 254 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 255 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 256 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 257 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 258 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, textureData); 259 260 glViewport(0, 0, w, h); 261 glMatrixMode(GL_PROJECTION); 262 glLoadIdentity(); 263 glOrthof(0, w, h, 0, 0, 1); 264 265 LayerDim::initDimmer(this, w, h); 266 267 mReadyToRunBarrier.open(); 268 269 /* 270 * We're now ready to accept clients... 271 */ 272 273 // start boot animation 274 property_set("ctl.start", "bootanim"); 275 276 return NO_ERROR; 277} 278 279// ---------------------------------------------------------------------------- 280#if 0 281#pragma mark - 282#pragma mark Events Handler 283#endif 284 285void SurfaceFlinger::waitForEvent() 286{ 287 while (true) { 288 nsecs_t timeout = -1; 289 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 290 if (UNLIKELY(isFrozen())) { 291 // wait 5 seconds 292 const nsecs_t now = systemTime(); 293 if (mFreezeDisplayTime == 0) { 294 mFreezeDisplayTime = now; 295 } 296 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 297 timeout = waitTime>0 ? waitTime : 0; 298 } 299 300 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 301 302 // see if we timed out 303 if (isFrozen()) { 304 const nsecs_t now = systemTime(); 305 nsecs_t frozenTime = (now - mFreezeDisplayTime); 306 if (frozenTime >= freezeDisplayTimeout) { 307 // we timed out and are still frozen 308 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 309 mFreezeDisplay, mFreezeCount); 310 mFreezeDisplayTime = 0; 311 mFreezeCount = 0; 312 mFreezeDisplay = false; 313 } 314 } 315 316 if (msg != 0) { 317 switch (msg->what) { 318 case MessageQueue::INVALIDATE: 319 // invalidate message, just return to the main loop 320 return; 321 } 322 } 323 } 324} 325 326void SurfaceFlinger::signalEvent() { 327 mEventQueue.invalidate(); 328} 329 330void SurfaceFlinger::signal() const { 331 // this is the IPC call 332 const_cast<SurfaceFlinger*>(this)->signalEvent(); 333} 334 335status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 336 nsecs_t reltime, uint32_t flags) 337{ 338 return mEventQueue.postMessage(msg, reltime, flags); 339} 340 341status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 342 nsecs_t reltime, uint32_t flags) 343{ 344 status_t res = mEventQueue.postMessage(msg, reltime, flags); 345 if (res == NO_ERROR) { 346 msg->wait(); 347 } 348 return res; 349} 350 351// ---------------------------------------------------------------------------- 352#if 0 353#pragma mark - 354#pragma mark Main loop 355#endif 356 357bool SurfaceFlinger::threadLoop() 358{ 359 waitForEvent(); 360 361 // check for transactions 362 if (UNLIKELY(mConsoleSignals)) { 363 handleConsoleEvents(); 364 } 365 366 if (LIKELY(mTransactionCount == 0)) { 367 // if we're in a global transaction, don't do anything. 368 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 369 uint32_t transactionFlags = getTransactionFlags(mask); 370 if (LIKELY(transactionFlags)) { 371 handleTransaction(transactionFlags); 372 } 373 } 374 375 // post surfaces (if needed) 376 handlePageFlip(); 377 378 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 379 if (LIKELY(hw.canDraw() && !isFrozen())) { 380 381#ifdef USE_COMPOSITION_BYPASS 382 if (handleBypassLayer()) { 383 unlockClients(); 384 return true; 385 } 386#endif 387 388 // repaint the framebuffer (if needed) 389 const int index = hw.getCurrentBufferIndex(); 390 GraphicLog& logger(GraphicLog::getInstance()); 391 392 logger.log(GraphicLog::SF_REPAINT, index); 393 handleRepaint(); 394 395 // inform the h/w that we're done compositing 396 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 397 hw.compositionComplete(); 398 399 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 400 postFramebuffer(); 401 402 logger.log(GraphicLog::SF_REPAINT_DONE, index); 403 } else { 404 // pretend we did the post 405 hw.compositionComplete(); 406 usleep(16667); // 60 fps period 407 } 408 return true; 409} 410 411bool SurfaceFlinger::handleBypassLayer() 412{ 413 sp<Layer> bypassLayer(mBypassLayer.promote()); 414 if (bypassLayer != 0) { 415 sp<GraphicBuffer> buffer(bypassLayer->getBypassBuffer()); 416 if (buffer!=0 && (buffer->usage & GRALLOC_USAGE_HW_FB)) { 417 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 418 hw.postBypassBuffer(buffer->handle); 419 return true; 420 } 421 } 422 return false; 423} 424 425void SurfaceFlinger::postFramebuffer() 426{ 427 if (!mInvalidRegion.isEmpty()) { 428 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 429 const nsecs_t now = systemTime(); 430 mDebugInSwapBuffers = now; 431 hw.flip(mInvalidRegion); 432 mLastSwapBufferTime = systemTime() - now; 433 mDebugInSwapBuffers = 0; 434 mInvalidRegion.clear(); 435 } 436} 437 438void SurfaceFlinger::handleConsoleEvents() 439{ 440 // something to do with the console 441 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 442 443 int what = android_atomic_and(0, &mConsoleSignals); 444 if (what & eConsoleAcquired) { 445 hw.acquireScreen(); 446 // this is a temporary work-around, eventually this should be called 447 // by the power-manager 448 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 449 } 450 451 if (mDeferReleaseConsole && hw.isScreenAcquired()) { 452 // We got the release signal before the acquire signal 453 mDeferReleaseConsole = false; 454 hw.releaseScreen(); 455 } 456 457 if (what & eConsoleReleased) { 458 if (hw.isScreenAcquired()) { 459 hw.releaseScreen(); 460 } else { 461 mDeferReleaseConsole = true; 462 } 463 } 464 465 mDirtyRegion.set(hw.bounds()); 466} 467 468void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 469{ 470 Vector< sp<LayerBase> > ditchedLayers; 471 472 /* 473 * Perform and commit the transaction 474 */ 475 476 { // scope for the lock 477 Mutex::Autolock _l(mStateLock); 478 const nsecs_t now = systemTime(); 479 mDebugInTransaction = now; 480 handleTransactionLocked(transactionFlags, ditchedLayers); 481 mLastTransactionTime = systemTime() - now; 482 mDebugInTransaction = 0; 483 // here the transaction has been committed 484 } 485 486 /* 487 * Clean-up all layers that went away 488 * (do this without the lock held) 489 */ 490 const size_t count = ditchedLayers.size(); 491 for (size_t i=0 ; i<count ; i++) { 492 if (ditchedLayers[i] != 0) { 493 //LOGD("ditching layer %p", ditchedLayers[i].get()); 494 ditchedLayers[i]->ditch(); 495 } 496 } 497} 498 499void SurfaceFlinger::handleTransactionLocked( 500 uint32_t transactionFlags, Vector< sp<LayerBase> >& ditchedLayers) 501{ 502 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 503 const size_t count = currentLayers.size(); 504 505 /* 506 * Traversal of the children 507 * (perform the transaction for each of them if needed) 508 */ 509 510 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 511 if (layersNeedTransaction) { 512 for (size_t i=0 ; i<count ; i++) { 513 const sp<LayerBase>& layer = currentLayers[i]; 514 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 515 if (!trFlags) continue; 516 517 const uint32_t flags = layer->doTransaction(0); 518 if (flags & Layer::eVisibleRegion) 519 mVisibleRegionsDirty = true; 520 } 521 } 522 523 /* 524 * Perform our own transaction if needed 525 */ 526 527 if (transactionFlags & eTransactionNeeded) { 528 if (mCurrentState.orientation != mDrawingState.orientation) { 529 // the orientation has changed, recompute all visible regions 530 // and invalidate everything. 531 532 const int dpy = 0; 533 const int orientation = mCurrentState.orientation; 534 const uint32_t type = mCurrentState.orientationType; 535 GraphicPlane& plane(graphicPlane(dpy)); 536 plane.setOrientation(orientation); 537 538 // update the shared control block 539 const DisplayHardware& hw(plane.displayHardware()); 540 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 541 dcblk->orientation = orientation; 542 dcblk->w = plane.getWidth(); 543 dcblk->h = plane.getHeight(); 544 545 mVisibleRegionsDirty = true; 546 mDirtyRegion.set(hw.bounds()); 547 } 548 549 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 550 // freezing or unfreezing the display -> trigger animation if needed 551 mFreezeDisplay = mCurrentState.freezeDisplay; 552 if (mFreezeDisplay) 553 mFreezeDisplayTime = 0; 554 } 555 556 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 557 // layers have been added 558 mVisibleRegionsDirty = true; 559 } 560 561 // some layers might have been removed, so 562 // we need to update the regions they're exposing. 563 if (mLayersRemoved) { 564 mLayersRemoved = false; 565 mVisibleRegionsDirty = true; 566 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 567 const size_t count = previousLayers.size(); 568 for (size_t i=0 ; i<count ; i++) { 569 const sp<LayerBase>& layer(previousLayers[i]); 570 if (currentLayers.indexOf( layer ) < 0) { 571 // this layer is not visible anymore 572 ditchedLayers.add(layer); 573 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 574 } 575 } 576 } 577 } 578 579 commitTransaction(); 580} 581 582sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 583{ 584 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 585} 586 587void SurfaceFlinger::computeVisibleRegions( 588 LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 589{ 590 const GraphicPlane& plane(graphicPlane(0)); 591 const Transform& planeTransform(plane.transform()); 592 const DisplayHardware& hw(plane.displayHardware()); 593 const Region screenRegion(hw.bounds()); 594 595 Region aboveOpaqueLayers; 596 Region aboveCoveredLayers; 597 Region dirty; 598 599 bool secureFrameBuffer = false; 600 601 size_t i = currentLayers.size(); 602 while (i--) { 603 const sp<LayerBase>& layer = currentLayers[i]; 604 layer->validateVisibility(planeTransform); 605 606 // start with the whole surface at its current location 607 const Layer::State& s(layer->drawingState()); 608 609 /* 610 * opaqueRegion: area of a surface that is fully opaque. 611 */ 612 Region opaqueRegion; 613 614 /* 615 * visibleRegion: area of a surface that is visible on screen 616 * and not fully transparent. This is essentially the layer's 617 * footprint minus the opaque regions above it. 618 * Areas covered by a translucent surface are considered visible. 619 */ 620 Region visibleRegion; 621 622 /* 623 * coveredRegion: area of a surface that is covered by all 624 * visible regions above it (which includes the translucent areas). 625 */ 626 Region coveredRegion; 627 628 629 // handle hidden surfaces by setting the visible region to empty 630 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 631 const bool translucent = layer->needsBlending(); 632 const Rect bounds(layer->visibleBounds()); 633 visibleRegion.set(bounds); 634 visibleRegion.andSelf(screenRegion); 635 if (!visibleRegion.isEmpty()) { 636 // Remove the transparent area from the visible region 637 if (translucent) { 638 visibleRegion.subtractSelf(layer->transparentRegionScreen); 639 } 640 641 // compute the opaque region 642 const int32_t layerOrientation = layer->getOrientation(); 643 if (s.alpha==255 && !translucent && 644 ((layerOrientation & Transform::ROT_INVALID) == false)) { 645 // the opaque region is the layer's footprint 646 opaqueRegion = visibleRegion; 647 } 648 } 649 } 650 651 // Clip the covered region to the visible region 652 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 653 654 // Update aboveCoveredLayers for next (lower) layer 655 aboveCoveredLayers.orSelf(visibleRegion); 656 657 // subtract the opaque region covered by the layers above us 658 visibleRegion.subtractSelf(aboveOpaqueLayers); 659 660 // compute this layer's dirty region 661 if (layer->contentDirty) { 662 // we need to invalidate the whole region 663 dirty = visibleRegion; 664 // as well, as the old visible region 665 dirty.orSelf(layer->visibleRegionScreen); 666 layer->contentDirty = false; 667 } else { 668 /* compute the exposed region: 669 * the exposed region consists of two components: 670 * 1) what's VISIBLE now and was COVERED before 671 * 2) what's EXPOSED now less what was EXPOSED before 672 * 673 * note that (1) is conservative, we start with the whole 674 * visible region but only keep what used to be covered by 675 * something -- which mean it may have been exposed. 676 * 677 * (2) handles areas that were not covered by anything but got 678 * exposed because of a resize. 679 */ 680 const Region newExposed = visibleRegion - coveredRegion; 681 const Region oldVisibleRegion = layer->visibleRegionScreen; 682 const Region oldCoveredRegion = layer->coveredRegionScreen; 683 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 684 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 685 } 686 dirty.subtractSelf(aboveOpaqueLayers); 687 688 // accumulate to the screen dirty region 689 dirtyRegion.orSelf(dirty); 690 691 // Update aboveOpaqueLayers for next (lower) layer 692 aboveOpaqueLayers.orSelf(opaqueRegion); 693 694 // Store the visible region is screen space 695 layer->setVisibleRegion(visibleRegion); 696 layer->setCoveredRegion(coveredRegion); 697 698 // If a secure layer is partially visible, lock-down the screen! 699 if (layer->isSecure() && !visibleRegion.isEmpty()) { 700 secureFrameBuffer = true; 701 } 702 } 703 704 // invalidate the areas where a layer was removed 705 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 706 mDirtyRegionRemovedLayer.clear(); 707 708 mSecureFrameBuffer = secureFrameBuffer; 709 opaqueRegion = aboveOpaqueLayers; 710} 711 712 713void SurfaceFlinger::commitTransaction() 714{ 715 mDrawingState = mCurrentState; 716 mResizeTransationPending = false; 717 mTransactionCV.broadcast(); 718} 719 720void SurfaceFlinger::setBypassLayer(const sp<LayerBase>& layer) 721{ 722 // if this layer is already the bypass layer, do nothing 723 sp<Layer> cur(mBypassLayer.promote()); 724 if (mBypassLayer == layer) { 725 if (cur != NULL) { 726 cur->updateBuffersOrientation(); 727 } 728 return; 729 } 730 731 // clear the current bypass layer 732 mBypassLayer.clear(); 733 if (cur != 0) { 734 cur->setBypass(false); 735 cur.clear(); 736 } 737 738 // set new bypass layer 739 if (layer != 0) { 740 if (layer->setBypass(true)) { 741 mBypassLayer = static_cast<Layer*>(layer.get()); 742 } 743 } 744} 745 746void SurfaceFlinger::handlePageFlip() 747{ 748 bool visibleRegions = mVisibleRegionsDirty; 749 LayerVector& currentLayers = const_cast<LayerVector&>( 750 mDrawingState.layersSortedByZ); 751 visibleRegions |= lockPageFlip(currentLayers); 752 753 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 754 const Region screenRegion(hw.bounds()); 755 if (visibleRegions) { 756 Region opaqueRegion; 757 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 758 759 /* 760 * rebuild the visible layer list 761 */ 762 mVisibleLayersSortedByZ.clear(); 763 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 764 size_t count = currentLayers.size(); 765 mVisibleLayersSortedByZ.setCapacity(count); 766 for (size_t i=0 ; i<count ; i++) { 767 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 768 mVisibleLayersSortedByZ.add(currentLayers[i]); 769 } 770 771#ifdef USE_COMPOSITION_BYPASS 772 sp<LayerBase> bypassLayer; 773 const size_t numVisibleLayers = mVisibleLayersSortedByZ.size(); 774 if (numVisibleLayers == 1) { 775 const sp<LayerBase>& candidate(mVisibleLayersSortedByZ[0]); 776 const Region& visibleRegion(candidate->visibleRegionScreen); 777 const Region reminder(screenRegion.subtract(visibleRegion)); 778 if (reminder.isEmpty()) { 779 // fullscreen candidate! 780 bypassLayer = candidate; 781 } 782 } 783 setBypassLayer(bypassLayer); 784#endif 785 786 mWormholeRegion = screenRegion.subtract(opaqueRegion); 787 mVisibleRegionsDirty = false; 788 } 789 790 unlockPageFlip(currentLayers); 791 mDirtyRegion.andSelf(screenRegion); 792} 793 794bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 795{ 796 bool recomputeVisibleRegions = false; 797 size_t count = currentLayers.size(); 798 sp<LayerBase> const* layers = currentLayers.array(); 799 for (size_t i=0 ; i<count ; i++) { 800 const sp<LayerBase>& layer(layers[i]); 801 layer->lockPageFlip(recomputeVisibleRegions); 802 } 803 return recomputeVisibleRegions; 804} 805 806void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 807{ 808 const GraphicPlane& plane(graphicPlane(0)); 809 const Transform& planeTransform(plane.transform()); 810 size_t count = currentLayers.size(); 811 sp<LayerBase> const* layers = currentLayers.array(); 812 for (size_t i=0 ; i<count ; i++) { 813 const sp<LayerBase>& layer(layers[i]); 814 layer->unlockPageFlip(planeTransform, mDirtyRegion); 815 } 816} 817 818 819void SurfaceFlinger::handleRepaint() 820{ 821 // compute the invalid region 822 mInvalidRegion.orSelf(mDirtyRegion); 823 if (mInvalidRegion.isEmpty()) { 824 // nothing to do 825 return; 826 } 827 828 if (UNLIKELY(mDebugRegion)) { 829 debugFlashRegions(); 830 } 831 832 // set the frame buffer 833 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 834 glMatrixMode(GL_MODELVIEW); 835 glLoadIdentity(); 836 837 uint32_t flags = hw.getFlags(); 838 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 839 (flags & DisplayHardware::BUFFER_PRESERVED)) 840 { 841 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 842 // takes a rectangle, we must make sure to update that whole 843 // rectangle in that case 844 if (flags & DisplayHardware::SWAP_RECTANGLE) { 845 // TODO: we really should be able to pass a region to 846 // SWAP_RECTANGLE so that we don't have to redraw all this. 847 mDirtyRegion.set(mInvalidRegion.bounds()); 848 } else { 849 // in the BUFFER_PRESERVED case, obviously, we can update only 850 // what's needed and nothing more. 851 // NOTE: this is NOT a common case, as preserving the backbuffer 852 // is costly and usually involves copying the whole update back. 853 } 854 } else { 855 if (flags & DisplayHardware::PARTIAL_UPDATES) { 856 // We need to redraw the rectangle that will be updated 857 // (pushed to the framebuffer). 858 // This is needed because PARTIAL_UPDATES only takes one 859 // rectangle instead of a region (see DisplayHardware::flip()) 860 mDirtyRegion.set(mInvalidRegion.bounds()); 861 } else { 862 // we need to redraw everything (the whole screen) 863 mDirtyRegion.set(hw.bounds()); 864 mInvalidRegion = mDirtyRegion; 865 } 866 } 867 868 // compose all surfaces 869 composeSurfaces(mDirtyRegion); 870 871 // clear the dirty regions 872 mDirtyRegion.clear(); 873} 874 875void SurfaceFlinger::composeSurfaces(const Region& dirty) 876{ 877 if (UNLIKELY(!mWormholeRegion.isEmpty())) { 878 // should never happen unless the window manager has a bug 879 // draw something... 880 drawWormhole(); 881 } 882 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 883 const size_t count = layers.size(); 884 for (size_t i=0 ; i<count ; ++i) { 885 const sp<LayerBase>& layer(layers[i]); 886 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 887 if (!clip.isEmpty()) { 888 layer->draw(clip); 889 } 890 } 891} 892 893void SurfaceFlinger::debugFlashRegions() 894{ 895 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 896 const uint32_t flags = hw.getFlags(); 897 898 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 899 (flags & DisplayHardware::BUFFER_PRESERVED))) { 900 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 901 mDirtyRegion.bounds() : hw.bounds()); 902 composeSurfaces(repaint); 903 } 904 905 TextureManager::deactivateTextures(); 906 907 glDisable(GL_BLEND); 908 glDisable(GL_DITHER); 909 glDisable(GL_SCISSOR_TEST); 910 911 static int toggle = 0; 912 toggle = 1 - toggle; 913 if (toggle) { 914 glColor4f(1, 0, 1, 1); 915 } else { 916 glColor4f(1, 1, 0, 1); 917 } 918 919 Region::const_iterator it = mDirtyRegion.begin(); 920 Region::const_iterator const end = mDirtyRegion.end(); 921 while (it != end) { 922 const Rect& r = *it++; 923 GLfloat vertices[][2] = { 924 { r.left, r.top }, 925 { r.left, r.bottom }, 926 { r.right, r.bottom }, 927 { r.right, r.top } 928 }; 929 glVertexPointer(2, GL_FLOAT, 0, vertices); 930 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 931 } 932 933 if (mInvalidRegion.isEmpty()) { 934 mDirtyRegion.dump("mDirtyRegion"); 935 mInvalidRegion.dump("mInvalidRegion"); 936 } 937 hw.flip(mInvalidRegion); 938 939 if (mDebugRegion > 1) 940 usleep(mDebugRegion * 1000); 941 942 glEnable(GL_SCISSOR_TEST); 943 //mDirtyRegion.dump("mDirtyRegion"); 944} 945 946void SurfaceFlinger::drawWormhole() const 947{ 948 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 949 if (region.isEmpty()) 950 return; 951 952 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 953 const int32_t width = hw.getWidth(); 954 const int32_t height = hw.getHeight(); 955 956 glDisable(GL_BLEND); 957 glDisable(GL_DITHER); 958 959 if (LIKELY(!mDebugBackground)) { 960 glClearColor(0,0,0,0); 961 Region::const_iterator it = region.begin(); 962 Region::const_iterator const end = region.end(); 963 while (it != end) { 964 const Rect& r = *it++; 965 const GLint sy = height - (r.top + r.height()); 966 glScissor(r.left, sy, r.width(), r.height()); 967 glClear(GL_COLOR_BUFFER_BIT); 968 } 969 } else { 970 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 971 { width, height }, { 0, height } }; 972 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 973 glVertexPointer(2, GL_SHORT, 0, vertices); 974 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 975 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 976#if defined(GL_OES_EGL_image_external) 977 if (GLExtensions::getInstance().haveTextureExternal()) { 978 glDisable(GL_TEXTURE_EXTERNAL_OES); 979 } 980#endif 981 glEnable(GL_TEXTURE_2D); 982 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 983 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 984 glMatrixMode(GL_TEXTURE); 985 glLoadIdentity(); 986 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 987 Region::const_iterator it = region.begin(); 988 Region::const_iterator const end = region.end(); 989 while (it != end) { 990 const Rect& r = *it++; 991 const GLint sy = height - (r.top + r.height()); 992 glScissor(r.left, sy, r.width(), r.height()); 993 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 994 } 995 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 996 } 997} 998 999void SurfaceFlinger::debugShowFPS() const 1000{ 1001 static int mFrameCount; 1002 static int mLastFrameCount = 0; 1003 static nsecs_t mLastFpsTime = 0; 1004 static float mFps = 0; 1005 mFrameCount++; 1006 nsecs_t now = systemTime(); 1007 nsecs_t diff = now - mLastFpsTime; 1008 if (diff > ms2ns(250)) { 1009 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1010 mLastFpsTime = now; 1011 mLastFrameCount = mFrameCount; 1012 } 1013 // XXX: mFPS has the value we want 1014 } 1015 1016status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1017{ 1018 Mutex::Autolock _l(mStateLock); 1019 addLayer_l(layer); 1020 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1021 return NO_ERROR; 1022} 1023 1024status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1025{ 1026 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1027 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1028} 1029 1030ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1031 const sp<LayerBaseClient>& lbc) 1032{ 1033 Mutex::Autolock _l(mStateLock); 1034 1035 // attach this layer to the client 1036 ssize_t name = client->attachLayer(lbc); 1037 1038 // add this layer to the current state list 1039 addLayer_l(lbc); 1040 1041 return name; 1042} 1043 1044status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1045{ 1046 Mutex::Autolock _l(mStateLock); 1047 status_t err = purgatorizeLayer_l(layer); 1048 if (err == NO_ERROR) 1049 setTransactionFlags(eTransactionNeeded); 1050 return err; 1051} 1052 1053status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1054{ 1055 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1056 if (lbc != 0) { 1057 mLayerMap.removeItem( lbc->getSurface()->asBinder() ); 1058 } 1059 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1060 if (index >= 0) { 1061 mLayersRemoved = true; 1062 return NO_ERROR; 1063 } 1064 return status_t(index); 1065} 1066 1067status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1068{ 1069 // First add the layer to the purgatory list, which makes sure it won't 1070 // go away, then remove it from the main list (through a transaction). 1071 ssize_t err = removeLayer_l(layerBase); 1072 if (err >= 0) { 1073 mLayerPurgatory.add(layerBase); 1074 } 1075 1076 layerBase->onRemoved(); 1077 1078 // it's possible that we don't find a layer, because it might 1079 // have been destroyed already -- this is not technically an error 1080 // from the user because there is a race between Client::destroySurface(), 1081 // ~Client() and ~ISurface(). 1082 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1083} 1084 1085status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1086{ 1087 layer->forceVisibilityTransaction(); 1088 setTransactionFlags(eTraversalNeeded); 1089 return NO_ERROR; 1090} 1091 1092uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1093{ 1094 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1095} 1096 1097uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1098{ 1099 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1100 if ((old & flags)==0) { // wake the server up 1101 signalEvent(); 1102 } 1103 return old; 1104} 1105 1106void SurfaceFlinger::openGlobalTransaction() 1107{ 1108 android_atomic_inc(&mTransactionCount); 1109} 1110 1111void SurfaceFlinger::closeGlobalTransaction() 1112{ 1113 if (android_atomic_dec(&mTransactionCount) == 1) { 1114 signalEvent(); 1115 1116 // if there is a transaction with a resize, wait for it to 1117 // take effect before returning. 1118 Mutex::Autolock _l(mStateLock); 1119 while (mResizeTransationPending) { 1120 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1121 if (CC_UNLIKELY(err != NO_ERROR)) { 1122 // just in case something goes wrong in SF, return to the 1123 // called after a few seconds. 1124 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1125 mResizeTransationPending = false; 1126 break; 1127 } 1128 } 1129 } 1130} 1131 1132status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1133{ 1134 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1135 return BAD_VALUE; 1136 1137 Mutex::Autolock _l(mStateLock); 1138 mCurrentState.freezeDisplay = 1; 1139 setTransactionFlags(eTransactionNeeded); 1140 1141 // flags is intended to communicate some sort of animation behavior 1142 // (for instance fading) 1143 return NO_ERROR; 1144} 1145 1146status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1147{ 1148 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1149 return BAD_VALUE; 1150 1151 Mutex::Autolock _l(mStateLock); 1152 mCurrentState.freezeDisplay = 0; 1153 setTransactionFlags(eTransactionNeeded); 1154 1155 // flags is intended to communicate some sort of animation behavior 1156 // (for instance fading) 1157 return NO_ERROR; 1158} 1159 1160int SurfaceFlinger::setOrientation(DisplayID dpy, 1161 int orientation, uint32_t flags) 1162{ 1163 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1164 return BAD_VALUE; 1165 1166 Mutex::Autolock _l(mStateLock); 1167 if (mCurrentState.orientation != orientation) { 1168 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1169 mCurrentState.orientationType = flags; 1170 mCurrentState.orientation = orientation; 1171 setTransactionFlags(eTransactionNeeded); 1172 mTransactionCV.wait(mStateLock); 1173 } else { 1174 orientation = BAD_VALUE; 1175 } 1176 } 1177 return orientation; 1178} 1179 1180sp<ISurface> SurfaceFlinger::createSurface(const sp<Client>& client, int pid, 1181 const String8& name, ISurfaceComposerClient::surface_data_t* params, 1182 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1183 uint32_t flags) 1184{ 1185 sp<LayerBaseClient> layer; 1186 sp<LayerBaseClient::Surface> surfaceHandle; 1187 1188 if (int32_t(w|h) < 0) { 1189 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1190 int(w), int(h)); 1191 return surfaceHandle; 1192 } 1193 1194 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1195 sp<Layer> normalLayer; 1196 switch (flags & eFXSurfaceMask) { 1197 case eFXSurfaceNormal: 1198 if (UNLIKELY(flags & ePushBuffers)) { 1199 layer = createPushBuffersSurface(client, d, w, h, flags); 1200 } else { 1201 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1202 layer = normalLayer; 1203 } 1204 break; 1205 case eFXSurfaceBlur: 1206 layer = createBlurSurface(client, d, w, h, flags); 1207 break; 1208 case eFXSurfaceDim: 1209 layer = createDimSurface(client, d, w, h, flags); 1210 break; 1211 } 1212 1213 if (layer != 0) { 1214 layer->initStates(w, h, flags); 1215 layer->setName(name); 1216 ssize_t token = addClientLayer(client, layer); 1217 1218 surfaceHandle = layer->getSurface(); 1219 if (surfaceHandle != 0) { 1220 params->token = token; 1221 params->identity = surfaceHandle->getIdentity(); 1222 params->width = w; 1223 params->height = h; 1224 params->format = format; 1225 if (normalLayer != 0) { 1226 Mutex::Autolock _l(mStateLock); 1227 mLayerMap.add(surfaceHandle->asBinder(), normalLayer); 1228 } 1229 } 1230 1231 setTransactionFlags(eTransactionNeeded); 1232 } 1233 1234 return surfaceHandle; 1235} 1236 1237sp<Layer> SurfaceFlinger::createNormalSurface( 1238 const sp<Client>& client, DisplayID display, 1239 uint32_t w, uint32_t h, uint32_t flags, 1240 PixelFormat& format) 1241{ 1242 // initialize the surfaces 1243 switch (format) { // TODO: take h/w into account 1244 case PIXEL_FORMAT_TRANSPARENT: 1245 case PIXEL_FORMAT_TRANSLUCENT: 1246 format = PIXEL_FORMAT_RGBA_8888; 1247 break; 1248 case PIXEL_FORMAT_OPAQUE: 1249#ifdef NO_RGBX_8888 1250 format = PIXEL_FORMAT_RGB_565; 1251#else 1252 format = PIXEL_FORMAT_RGBX_8888; 1253#endif 1254 break; 1255 } 1256 1257#ifdef NO_RGBX_8888 1258 if (format == PIXEL_FORMAT_RGBX_8888) 1259 format = PIXEL_FORMAT_RGBA_8888; 1260#endif 1261 1262 sp<Layer> layer = new Layer(this, display, client); 1263 status_t err = layer->setBuffers(w, h, format, flags); 1264 if (LIKELY(err != NO_ERROR)) { 1265 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1266 layer.clear(); 1267 } 1268 return layer; 1269} 1270 1271sp<LayerBlur> SurfaceFlinger::createBlurSurface( 1272 const sp<Client>& client, DisplayID display, 1273 uint32_t w, uint32_t h, uint32_t flags) 1274{ 1275 sp<LayerBlur> layer = new LayerBlur(this, display, client); 1276 layer->initStates(w, h, flags); 1277 return layer; 1278} 1279 1280sp<LayerDim> SurfaceFlinger::createDimSurface( 1281 const sp<Client>& client, DisplayID display, 1282 uint32_t w, uint32_t h, uint32_t flags) 1283{ 1284 sp<LayerDim> layer = new LayerDim(this, display, client); 1285 layer->initStates(w, h, flags); 1286 return layer; 1287} 1288 1289sp<LayerBuffer> SurfaceFlinger::createPushBuffersSurface( 1290 const sp<Client>& client, DisplayID display, 1291 uint32_t w, uint32_t h, uint32_t flags) 1292{ 1293 sp<LayerBuffer> layer = new LayerBuffer(this, display, client); 1294 layer->initStates(w, h, flags); 1295 return layer; 1296} 1297 1298status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1299{ 1300 /* 1301 * called by the window manager, when a surface should be marked for 1302 * destruction. 1303 * 1304 * The surface is removed from the current and drawing lists, but placed 1305 * in the purgatory queue, so it's not destroyed right-away (we need 1306 * to wait for all client's references to go away first). 1307 */ 1308 1309 status_t err = NAME_NOT_FOUND; 1310 Mutex::Autolock _l(mStateLock); 1311 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1312 if (layer != 0) { 1313 err = purgatorizeLayer_l(layer); 1314 if (err == NO_ERROR) { 1315 setTransactionFlags(eTransactionNeeded); 1316 } 1317 } 1318 return err; 1319} 1320 1321status_t SurfaceFlinger::destroySurface(const sp<LayerBaseClient>& layer) 1322{ 1323 // called by ~ISurface() when all references are gone 1324 1325 class MessageDestroySurface : public MessageBase { 1326 SurfaceFlinger* flinger; 1327 sp<LayerBaseClient> layer; 1328 public: 1329 MessageDestroySurface( 1330 SurfaceFlinger* flinger, const sp<LayerBaseClient>& layer) 1331 : flinger(flinger), layer(layer) { } 1332 virtual bool handler() { 1333 sp<LayerBaseClient> l(layer); 1334 layer.clear(); // clear it outside of the lock; 1335 Mutex::Autolock _l(flinger->mStateLock); 1336 /* 1337 * remove the layer from the current list -- chances are that it's 1338 * not in the list anyway, because it should have been removed 1339 * already upon request of the client (eg: window manager). 1340 * However, a buggy client could have not done that. 1341 * Since we know we don't have any more clients, we don't need 1342 * to use the purgatory. 1343 */ 1344 status_t err = flinger->removeLayer_l(l); 1345 if (err == NAME_NOT_FOUND) { 1346 // The surface wasn't in the current list, which means it was 1347 // removed already, which means it is in the purgatory, 1348 // and need to be removed from there. 1349 // This needs to happen from the main thread since its dtor 1350 // must run from there (b/c of OpenGL ES). Additionally, we 1351 // can't really acquire our internal lock from 1352 // destroySurface() -- see postMessage() below. 1353 ssize_t idx = flinger->mLayerPurgatory.remove(l); 1354 LOGE_IF(idx < 0, 1355 "layer=%p is not in the purgatory list", l.get()); 1356 } 1357 1358 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1359 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1360 return true; 1361 } 1362 }; 1363 1364 postMessageAsync( new MessageDestroySurface(this, layer) ); 1365 return NO_ERROR; 1366} 1367 1368status_t SurfaceFlinger::setClientState( 1369 const sp<Client>& client, 1370 int32_t count, 1371 const layer_state_t* states) 1372{ 1373 Mutex::Autolock _l(mStateLock); 1374 uint32_t flags = 0; 1375 for (int i=0 ; i<count ; i++) { 1376 const layer_state_t& s(states[i]); 1377 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1378 if (layer != 0) { 1379 const uint32_t what = s.what; 1380 if (what & ePositionChanged) { 1381 if (layer->setPosition(s.x, s.y)) 1382 flags |= eTraversalNeeded; 1383 } 1384 if (what & eLayerChanged) { 1385 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1386 if (layer->setLayer(s.z)) { 1387 mCurrentState.layersSortedByZ.removeAt(idx); 1388 mCurrentState.layersSortedByZ.add(layer); 1389 // we need traversal (state changed) 1390 // AND transaction (list changed) 1391 flags |= eTransactionNeeded|eTraversalNeeded; 1392 } 1393 } 1394 if (what & eSizeChanged) { 1395 if (layer->setSize(s.w, s.h)) { 1396 flags |= eTraversalNeeded; 1397 mResizeTransationPending = true; 1398 } 1399 } 1400 if (what & eAlphaChanged) { 1401 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1402 flags |= eTraversalNeeded; 1403 } 1404 if (what & eMatrixChanged) { 1405 if (layer->setMatrix(s.matrix)) 1406 flags |= eTraversalNeeded; 1407 } 1408 if (what & eTransparentRegionChanged) { 1409 if (layer->setTransparentRegionHint(s.transparentRegion)) 1410 flags |= eTraversalNeeded; 1411 } 1412 if (what & eVisibilityChanged) { 1413 if (layer->setFlags(s.flags, s.mask)) 1414 flags |= eTraversalNeeded; 1415 } 1416 } 1417 } 1418 if (flags) { 1419 setTransactionFlags(flags); 1420 } 1421 return NO_ERROR; 1422} 1423 1424void SurfaceFlinger::screenReleased(int dpy) 1425{ 1426 // this may be called by a signal handler, we can't do too much in here 1427 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1428 signalEvent(); 1429} 1430 1431void SurfaceFlinger::screenAcquired(int dpy) 1432{ 1433 // this may be called by a signal handler, we can't do too much in here 1434 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1435 signalEvent(); 1436} 1437 1438status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1439{ 1440 const size_t SIZE = 1024; 1441 char buffer[SIZE]; 1442 String8 result; 1443 if (!mDump.checkCalling()) { 1444 snprintf(buffer, SIZE, "Permission Denial: " 1445 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1446 IPCThreadState::self()->getCallingPid(), 1447 IPCThreadState::self()->getCallingUid()); 1448 result.append(buffer); 1449 } else { 1450 1451 // figure out if we're stuck somewhere 1452 const nsecs_t now = systemTime(); 1453 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1454 const nsecs_t inTransaction(mDebugInTransaction); 1455 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1456 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1457 1458 // Try to get the main lock, but don't insist if we can't 1459 // (this would indicate SF is stuck, but we want to be able to 1460 // print something in dumpsys). 1461 int retry = 3; 1462 while (mStateLock.tryLock()<0 && --retry>=0) { 1463 usleep(1000000); 1464 } 1465 const bool locked(retry >= 0); 1466 if (!locked) { 1467 snprintf(buffer, SIZE, 1468 "SurfaceFlinger appears to be unresponsive, " 1469 "dumping anyways (no locks held)\n"); 1470 result.append(buffer); 1471 } 1472 1473 /* 1474 * Dump the visible layer list 1475 */ 1476 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1477 const size_t count = currentLayers.size(); 1478 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1479 result.append(buffer); 1480 for (size_t i=0 ; i<count ; i++) { 1481 const sp<LayerBase>& layer(currentLayers[i]); 1482 layer->dump(result, buffer, SIZE); 1483 const Layer::State& s(layer->drawingState()); 1484 s.transparentRegion.dump(result, "transparentRegion"); 1485 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1486 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1487 } 1488 1489 /* 1490 * Dump the layers in the purgatory 1491 */ 1492 1493 const size_t purgatorySize = mLayerPurgatory.size(); 1494 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1495 result.append(buffer); 1496 for (size_t i=0 ; i<purgatorySize ; i++) { 1497 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1498 layer->shortDump(result, buffer, SIZE); 1499 } 1500 1501 /* 1502 * Dump SurfaceFlinger global state 1503 */ 1504 1505 snprintf(buffer, SIZE, "SurfaceFlinger global state\n"); 1506 result.append(buffer); 1507 mWormholeRegion.dump(result, "WormholeRegion"); 1508 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1509 snprintf(buffer, SIZE, 1510 " display frozen: %s, freezeCount=%d, orientation=%d, bypass=%p, canDraw=%d\n", 1511 mFreezeDisplay?"yes":"no", mFreezeCount, 1512 mCurrentState.orientation, mBypassLayer.unsafe_get(), hw.canDraw()); 1513 result.append(buffer); 1514 snprintf(buffer, SIZE, 1515 " last eglSwapBuffers() time: %f us\n" 1516 " last transaction time : %f us\n", 1517 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1518 result.append(buffer); 1519 1520 if (inSwapBuffersDuration || !locked) { 1521 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1522 inSwapBuffersDuration/1000.0); 1523 result.append(buffer); 1524 } 1525 1526 if (inTransactionDuration || !locked) { 1527 snprintf(buffer, SIZE, " transaction time: %f us\n", 1528 inTransactionDuration/1000.0); 1529 result.append(buffer); 1530 } 1531 1532 /* 1533 * Dump gralloc state 1534 */ 1535 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1536 alloc.dump(result); 1537 1538 if (locked) { 1539 mStateLock.unlock(); 1540 } 1541 } 1542 write(fd, result.string(), result.size()); 1543 return NO_ERROR; 1544} 1545 1546status_t SurfaceFlinger::onTransact( 1547 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1548{ 1549 switch (code) { 1550 case CREATE_CONNECTION: 1551 case OPEN_GLOBAL_TRANSACTION: 1552 case CLOSE_GLOBAL_TRANSACTION: 1553 case SET_ORIENTATION: 1554 case FREEZE_DISPLAY: 1555 case UNFREEZE_DISPLAY: 1556 case BOOT_FINISHED: 1557 case TURN_ELECTRON_BEAM_OFF: 1558 case TURN_ELECTRON_BEAM_ON: 1559 { 1560 // codes that require permission check 1561 IPCThreadState* ipc = IPCThreadState::self(); 1562 const int pid = ipc->getCallingPid(); 1563 const int uid = ipc->getCallingUid(); 1564 if ((uid != AID_GRAPHICS) && !mAccessSurfaceFlinger.check(pid, uid)) { 1565 LOGE("Permission Denial: " 1566 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1567 return PERMISSION_DENIED; 1568 } 1569 break; 1570 } 1571 case CAPTURE_SCREEN: 1572 { 1573 // codes that require permission check 1574 IPCThreadState* ipc = IPCThreadState::self(); 1575 const int pid = ipc->getCallingPid(); 1576 const int uid = ipc->getCallingUid(); 1577 if ((uid != AID_GRAPHICS) && !mReadFramebuffer.check(pid, uid)) { 1578 LOGE("Permission Denial: " 1579 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1580 return PERMISSION_DENIED; 1581 } 1582 break; 1583 } 1584 } 1585 1586 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1587 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1588 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1589 if (UNLIKELY(!mHardwareTest.checkCalling())) { 1590 IPCThreadState* ipc = IPCThreadState::self(); 1591 const int pid = ipc->getCallingPid(); 1592 const int uid = ipc->getCallingUid(); 1593 LOGE("Permission Denial: " 1594 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1595 return PERMISSION_DENIED; 1596 } 1597 int n; 1598 switch (code) { 1599 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1600 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1601 return NO_ERROR; 1602 case 1002: // SHOW_UPDATES 1603 n = data.readInt32(); 1604 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1605 return NO_ERROR; 1606 case 1003: // SHOW_BACKGROUND 1607 n = data.readInt32(); 1608 mDebugBackground = n ? 1 : 0; 1609 return NO_ERROR; 1610 case 1004:{ // repaint everything 1611 Mutex::Autolock _l(mStateLock); 1612 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1613 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1614 signalEvent(); 1615 return NO_ERROR; 1616 } 1617 case 1005:{ // force transaction 1618 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1619 return NO_ERROR; 1620 } 1621 case 1006:{ // enable/disable GraphicLog 1622 int enabled = data.readInt32(); 1623 GraphicLog::getInstance().setEnabled(enabled); 1624 return NO_ERROR; 1625 } 1626 case 1007: // set mFreezeCount 1627 mFreezeCount = data.readInt32(); 1628 mFreezeDisplayTime = 0; 1629 return NO_ERROR; 1630 case 1010: // interrogate. 1631 reply->writeInt32(0); 1632 reply->writeInt32(0); 1633 reply->writeInt32(mDebugRegion); 1634 reply->writeInt32(mDebugBackground); 1635 return NO_ERROR; 1636 case 1013: { 1637 Mutex::Autolock _l(mStateLock); 1638 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1639 reply->writeInt32(hw.getPageFlipCount()); 1640 } 1641 return NO_ERROR; 1642 } 1643 } 1644 return err; 1645} 1646 1647// --------------------------------------------------------------------------- 1648 1649status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1650 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1651{ 1652 if (!GLExtensions::getInstance().haveFramebufferObject()) 1653 return INVALID_OPERATION; 1654 1655 // get screen geometry 1656 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1657 const uint32_t hw_w = hw.getWidth(); 1658 const uint32_t hw_h = hw.getHeight(); 1659 GLfloat u = 1; 1660 GLfloat v = 1; 1661 1662 // make sure to clear all GL error flags 1663 while ( glGetError() != GL_NO_ERROR ) ; 1664 1665 // create a FBO 1666 GLuint name, tname; 1667 glGenTextures(1, &tname); 1668 glBindTexture(GL_TEXTURE_2D, tname); 1669 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1670 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1671 if (glGetError() != GL_NO_ERROR) { 1672 while ( glGetError() != GL_NO_ERROR ) ; 1673 GLint tw = (2 << (31 - clz(hw_w))); 1674 GLint th = (2 << (31 - clz(hw_h))); 1675 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1676 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1677 u = GLfloat(hw_w) / tw; 1678 v = GLfloat(hw_h) / th; 1679 } 1680 glGenFramebuffersOES(1, &name); 1681 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1682 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1683 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1684 1685 // redraw the screen entirely... 1686 glClearColor(0,0,0,1); 1687 glClear(GL_COLOR_BUFFER_BIT); 1688 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1689 const size_t count = layers.size(); 1690 for (size_t i=0 ; i<count ; ++i) { 1691 const sp<LayerBase>& layer(layers[i]); 1692 layer->drawForSreenShot(); 1693 } 1694 1695 // back to main framebuffer 1696 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1697 glDisable(GL_SCISSOR_TEST); 1698 glDeleteFramebuffersOES(1, &name); 1699 1700 *textureName = tname; 1701 *uOut = u; 1702 *vOut = v; 1703 return NO_ERROR; 1704} 1705 1706// --------------------------------------------------------------------------- 1707 1708status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1709{ 1710 status_t result = PERMISSION_DENIED; 1711 1712 if (!GLExtensions::getInstance().haveFramebufferObject()) 1713 return INVALID_OPERATION; 1714 1715 // get screen geometry 1716 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1717 const uint32_t hw_w = hw.getWidth(); 1718 const uint32_t hw_h = hw.getHeight(); 1719 const Region screenBounds(hw.bounds()); 1720 1721 GLfloat u, v; 1722 GLuint tname; 1723 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1724 if (result != NO_ERROR) { 1725 return result; 1726 } 1727 1728 GLfloat vtx[8]; 1729 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1730 glEnable(GL_TEXTURE_2D); 1731 glBindTexture(GL_TEXTURE_2D, tname); 1732 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1733 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1734 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1735 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1736 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1737 glVertexPointer(2, GL_FLOAT, 0, vtx); 1738 1739 class s_curve_interpolator { 1740 const float nbFrames, s, v; 1741 public: 1742 s_curve_interpolator(int nbFrames, float s) 1743 : nbFrames(1.0f / (nbFrames-1)), s(s), 1744 v(1.0f + expf(-s + 0.5f*s)) { 1745 } 1746 float operator()(int f) { 1747 const float x = f * nbFrames; 1748 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1749 } 1750 }; 1751 1752 class v_stretch { 1753 const GLfloat hw_w, hw_h; 1754 public: 1755 v_stretch(uint32_t hw_w, uint32_t hw_h) 1756 : hw_w(hw_w), hw_h(hw_h) { 1757 } 1758 void operator()(GLfloat* vtx, float v) { 1759 const GLfloat w = hw_w + (hw_w * v); 1760 const GLfloat h = hw_h - (hw_h * v); 1761 const GLfloat x = (hw_w - w) * 0.5f; 1762 const GLfloat y = (hw_h - h) * 0.5f; 1763 vtx[0] = x; vtx[1] = y; 1764 vtx[2] = x; vtx[3] = y + h; 1765 vtx[4] = x + w; vtx[5] = y + h; 1766 vtx[6] = x + w; vtx[7] = y; 1767 } 1768 }; 1769 1770 class h_stretch { 1771 const GLfloat hw_w, hw_h; 1772 public: 1773 h_stretch(uint32_t hw_w, uint32_t hw_h) 1774 : hw_w(hw_w), hw_h(hw_h) { 1775 } 1776 void operator()(GLfloat* vtx, float v) { 1777 const GLfloat w = hw_w - (hw_w * v); 1778 const GLfloat h = 1.0f; 1779 const GLfloat x = (hw_w - w) * 0.5f; 1780 const GLfloat y = (hw_h - h) * 0.5f; 1781 vtx[0] = x; vtx[1] = y; 1782 vtx[2] = x; vtx[3] = y + h; 1783 vtx[4] = x + w; vtx[5] = y + h; 1784 vtx[6] = x + w; vtx[7] = y; 1785 } 1786 }; 1787 1788 // the full animation is 24 frames 1789 const int nbFrames = 12; 1790 s_curve_interpolator itr(nbFrames, 7.5f); 1791 s_curve_interpolator itg(nbFrames, 8.0f); 1792 s_curve_interpolator itb(nbFrames, 8.5f); 1793 1794 v_stretch vverts(hw_w, hw_h); 1795 glEnable(GL_BLEND); 1796 glBlendFunc(GL_ONE, GL_ONE); 1797 for (int i=0 ; i<nbFrames ; i++) { 1798 float x, y, w, h; 1799 const float vr = itr(i); 1800 const float vg = itg(i); 1801 const float vb = itb(i); 1802 1803 // clear screen 1804 glColorMask(1,1,1,1); 1805 glClear(GL_COLOR_BUFFER_BIT); 1806 glEnable(GL_TEXTURE_2D); 1807 1808 // draw the red plane 1809 vverts(vtx, vr); 1810 glColorMask(1,0,0,1); 1811 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1812 1813 // draw the green plane 1814 vverts(vtx, vg); 1815 glColorMask(0,1,0,1); 1816 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1817 1818 // draw the blue plane 1819 vverts(vtx, vb); 1820 glColorMask(0,0,1,1); 1821 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1822 1823 // draw the white highlight (we use the last vertices) 1824 glDisable(GL_TEXTURE_2D); 1825 glColorMask(1,1,1,1); 1826 glColor4f(vg, vg, vg, 1); 1827 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1828 hw.flip(screenBounds); 1829 } 1830 1831 h_stretch hverts(hw_w, hw_h); 1832 glDisable(GL_BLEND); 1833 glDisable(GL_TEXTURE_2D); 1834 glColorMask(1,1,1,1); 1835 for (int i=0 ; i<nbFrames ; i++) { 1836 const float v = itg(i); 1837 hverts(vtx, v); 1838 glClear(GL_COLOR_BUFFER_BIT); 1839 glColor4f(1-v, 1-v, 1-v, 1); 1840 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1841 hw.flip(screenBounds); 1842 } 1843 1844 glColorMask(1,1,1,1); 1845 glEnable(GL_SCISSOR_TEST); 1846 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1847 glDeleteTextures(1, &tname); 1848 return NO_ERROR; 1849} 1850 1851status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1852{ 1853 status_t result = PERMISSION_DENIED; 1854 1855 if (!GLExtensions::getInstance().haveFramebufferObject()) 1856 return INVALID_OPERATION; 1857 1858 1859 // get screen geometry 1860 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1861 const uint32_t hw_w = hw.getWidth(); 1862 const uint32_t hw_h = hw.getHeight(); 1863 const Region screenBounds(hw.bounds()); 1864 1865 GLfloat u, v; 1866 GLuint tname; 1867 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1868 if (result != NO_ERROR) { 1869 return result; 1870 } 1871 1872 // back to main framebuffer 1873 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1874 glDisable(GL_SCISSOR_TEST); 1875 1876 GLfloat vtx[8]; 1877 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1878 glEnable(GL_TEXTURE_2D); 1879 glBindTexture(GL_TEXTURE_2D, tname); 1880 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 1881 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1882 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1883 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1884 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1885 glVertexPointer(2, GL_FLOAT, 0, vtx); 1886 1887 class s_curve_interpolator { 1888 const float nbFrames, s, v; 1889 public: 1890 s_curve_interpolator(int nbFrames, float s) 1891 : nbFrames(1.0f / (nbFrames-1)), s(s), 1892 v(1.0f + expf(-s + 0.5f*s)) { 1893 } 1894 float operator()(int f) { 1895 const float x = f * nbFrames; 1896 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1897 } 1898 }; 1899 1900 class v_stretch { 1901 const GLfloat hw_w, hw_h; 1902 public: 1903 v_stretch(uint32_t hw_w, uint32_t hw_h) 1904 : hw_w(hw_w), hw_h(hw_h) { 1905 } 1906 void operator()(GLfloat* vtx, float v) { 1907 const GLfloat w = hw_w + (hw_w * v); 1908 const GLfloat h = hw_h - (hw_h * v); 1909 const GLfloat x = (hw_w - w) * 0.5f; 1910 const GLfloat y = (hw_h - h) * 0.5f; 1911 vtx[0] = x; vtx[1] = y; 1912 vtx[2] = x; vtx[3] = y + h; 1913 vtx[4] = x + w; vtx[5] = y + h; 1914 vtx[6] = x + w; vtx[7] = y; 1915 } 1916 }; 1917 1918 class h_stretch { 1919 const GLfloat hw_w, hw_h; 1920 public: 1921 h_stretch(uint32_t hw_w, uint32_t hw_h) 1922 : hw_w(hw_w), hw_h(hw_h) { 1923 } 1924 void operator()(GLfloat* vtx, float v) { 1925 const GLfloat w = hw_w - (hw_w * v); 1926 const GLfloat h = 1.0f; 1927 const GLfloat x = (hw_w - w) * 0.5f; 1928 const GLfloat y = (hw_h - h) * 0.5f; 1929 vtx[0] = x; vtx[1] = y; 1930 vtx[2] = x; vtx[3] = y + h; 1931 vtx[4] = x + w; vtx[5] = y + h; 1932 vtx[6] = x + w; vtx[7] = y; 1933 } 1934 }; 1935 1936 // the full animation is 12 frames 1937 int nbFrames = 8; 1938 s_curve_interpolator itr(nbFrames, 7.5f); 1939 s_curve_interpolator itg(nbFrames, 8.0f); 1940 s_curve_interpolator itb(nbFrames, 8.5f); 1941 1942 h_stretch hverts(hw_w, hw_h); 1943 glDisable(GL_BLEND); 1944 glDisable(GL_TEXTURE_2D); 1945 glColorMask(1,1,1,1); 1946 for (int i=nbFrames-1 ; i>=0 ; i--) { 1947 const float v = itg(i); 1948 hverts(vtx, v); 1949 glClear(GL_COLOR_BUFFER_BIT); 1950 glColor4f(1-v, 1-v, 1-v, 1); 1951 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1952 hw.flip(screenBounds); 1953 } 1954 1955 nbFrames = 4; 1956 v_stretch vverts(hw_w, hw_h); 1957 glEnable(GL_BLEND); 1958 glBlendFunc(GL_ONE, GL_ONE); 1959 for (int i=nbFrames-1 ; i>=0 ; i--) { 1960 float x, y, w, h; 1961 const float vr = itr(i); 1962 const float vg = itg(i); 1963 const float vb = itb(i); 1964 1965 // clear screen 1966 glColorMask(1,1,1,1); 1967 glClear(GL_COLOR_BUFFER_BIT); 1968 glEnable(GL_TEXTURE_2D); 1969 1970 // draw the red plane 1971 vverts(vtx, vr); 1972 glColorMask(1,0,0,1); 1973 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1974 1975 // draw the green plane 1976 vverts(vtx, vg); 1977 glColorMask(0,1,0,1); 1978 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1979 1980 // draw the blue plane 1981 vverts(vtx, vb); 1982 glColorMask(0,0,1,1); 1983 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1984 1985 hw.flip(screenBounds); 1986 } 1987 1988 glColorMask(1,1,1,1); 1989 glEnable(GL_SCISSOR_TEST); 1990 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1991 glDeleteTextures(1, &tname); 1992 1993 return NO_ERROR; 1994} 1995 1996// --------------------------------------------------------------------------- 1997 1998status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 1999{ 2000 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2001 if (!hw.canDraw()) { 2002 // we're already off 2003 return NO_ERROR; 2004 } 2005 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2006 electronBeamOffAnimationImplLocked(); 2007 } 2008 2009 // always clear the whole screen at the end of the animation 2010 glClearColor(0,0,0,1); 2011 glDisable(GL_SCISSOR_TEST); 2012 glClear(GL_COLOR_BUFFER_BIT); 2013 glEnable(GL_SCISSOR_TEST); 2014 hw.flip( Region(hw.bounds()) ); 2015 2016 hw.setCanDraw(false); 2017 return NO_ERROR; 2018} 2019 2020status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2021{ 2022 class MessageTurnElectronBeamOff : public MessageBase { 2023 SurfaceFlinger* flinger; 2024 int32_t mode; 2025 status_t result; 2026 public: 2027 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2028 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2029 } 2030 status_t getResult() const { 2031 return result; 2032 } 2033 virtual bool handler() { 2034 Mutex::Autolock _l(flinger->mStateLock); 2035 result = flinger->turnElectronBeamOffImplLocked(mode); 2036 return true; 2037 } 2038 }; 2039 2040 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2041 status_t res = postMessageSync(msg); 2042 if (res == NO_ERROR) { 2043 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2044 2045 // work-around: when the power-manager calls us we activate the 2046 // animation. eventually, the "on" animation will be called 2047 // by the power-manager itself 2048 mElectronBeamAnimationMode = mode; 2049 } 2050 return res; 2051} 2052 2053// --------------------------------------------------------------------------- 2054 2055status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2056{ 2057 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2058 if (hw.canDraw()) { 2059 // we're already on 2060 return NO_ERROR; 2061 } 2062 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2063 electronBeamOnAnimationImplLocked(); 2064 } 2065 hw.setCanDraw(true); 2066 2067 // make sure to redraw the whole screen when the animation is done 2068 mDirtyRegion.set(hw.bounds()); 2069 signalEvent(); 2070 2071 return NO_ERROR; 2072} 2073 2074status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2075{ 2076 class MessageTurnElectronBeamOn : public MessageBase { 2077 SurfaceFlinger* flinger; 2078 int32_t mode; 2079 status_t result; 2080 public: 2081 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2082 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2083 } 2084 status_t getResult() const { 2085 return result; 2086 } 2087 virtual bool handler() { 2088 Mutex::Autolock _l(flinger->mStateLock); 2089 result = flinger->turnElectronBeamOnImplLocked(mode); 2090 return true; 2091 } 2092 }; 2093 2094 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2095 return NO_ERROR; 2096} 2097 2098// --------------------------------------------------------------------------- 2099 2100status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2101 sp<IMemoryHeap>* heap, 2102 uint32_t* w, uint32_t* h, PixelFormat* f, 2103 uint32_t sw, uint32_t sh) 2104{ 2105 status_t result = PERMISSION_DENIED; 2106 2107 // only one display supported for now 2108 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2109 return BAD_VALUE; 2110 2111 if (!GLExtensions::getInstance().haveFramebufferObject()) 2112 return INVALID_OPERATION; 2113 2114 // get screen geometry 2115 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2116 const uint32_t hw_w = hw.getWidth(); 2117 const uint32_t hw_h = hw.getHeight(); 2118 2119 if ((sw > hw_w) || (sh > hw_h)) 2120 return BAD_VALUE; 2121 2122 sw = (!sw) ? hw_w : sw; 2123 sh = (!sh) ? hw_h : sh; 2124 const size_t size = sw * sh * 4; 2125 2126 // make sure to clear all GL error flags 2127 while ( glGetError() != GL_NO_ERROR ) ; 2128 2129 // create a FBO 2130 GLuint name, tname; 2131 glGenRenderbuffersOES(1, &tname); 2132 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2133 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2134 glGenFramebuffersOES(1, &name); 2135 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2136 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2137 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2138 2139 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2140 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2141 2142 // invert everything, b/c glReadPixel() below will invert the FB 2143 glViewport(0, 0, sw, sh); 2144 glScissor(0, 0, sw, sh); 2145 glMatrixMode(GL_PROJECTION); 2146 glPushMatrix(); 2147 glLoadIdentity(); 2148 glOrthof(0, hw_w, 0, hw_h, 0, 1); 2149 glMatrixMode(GL_MODELVIEW); 2150 2151 // redraw the screen entirely... 2152 glClearColor(0,0,0,1); 2153 glClear(GL_COLOR_BUFFER_BIT); 2154 2155 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 2156 const size_t count = layers.size(); 2157 for (size_t i=0 ; i<count ; ++i) { 2158 const sp<LayerBase>& layer(layers[i]); 2159 layer->drawForSreenShot(); 2160 } 2161 2162 // XXX: this is needed on tegra 2163 glScissor(0, 0, sw, sh); 2164 2165 // check for errors and return screen capture 2166 if (glGetError() != GL_NO_ERROR) { 2167 // error while rendering 2168 result = INVALID_OPERATION; 2169 } else { 2170 // allocate shared memory large enough to hold the 2171 // screen capture 2172 sp<MemoryHeapBase> base( 2173 new MemoryHeapBase(size, 0, "screen-capture") ); 2174 void* const ptr = base->getBase(); 2175 if (ptr) { 2176 // capture the screen with glReadPixels() 2177 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2178 if (glGetError() == GL_NO_ERROR) { 2179 *heap = base; 2180 *w = sw; 2181 *h = sh; 2182 *f = PIXEL_FORMAT_RGBA_8888; 2183 result = NO_ERROR; 2184 } 2185 } else { 2186 result = NO_MEMORY; 2187 } 2188 } 2189 glEnable(GL_SCISSOR_TEST); 2190 glViewport(0, 0, hw_w, hw_h); 2191 glMatrixMode(GL_PROJECTION); 2192 glPopMatrix(); 2193 glMatrixMode(GL_MODELVIEW); 2194 2195 2196 } else { 2197 result = BAD_VALUE; 2198 } 2199 2200 // release FBO resources 2201 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2202 glDeleteRenderbuffersOES(1, &tname); 2203 glDeleteFramebuffersOES(1, &name); 2204 2205 hw.compositionComplete(); 2206 2207 return result; 2208} 2209 2210 2211status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2212 sp<IMemoryHeap>* heap, 2213 uint32_t* width, uint32_t* height, PixelFormat* format, 2214 uint32_t sw, uint32_t sh) 2215{ 2216 // only one display supported for now 2217 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2218 return BAD_VALUE; 2219 2220 if (!GLExtensions::getInstance().haveFramebufferObject()) 2221 return INVALID_OPERATION; 2222 2223 class MessageCaptureScreen : public MessageBase { 2224 SurfaceFlinger* flinger; 2225 DisplayID dpy; 2226 sp<IMemoryHeap>* heap; 2227 uint32_t* w; 2228 uint32_t* h; 2229 PixelFormat* f; 2230 uint32_t sw; 2231 uint32_t sh; 2232 status_t result; 2233 public: 2234 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2235 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2236 uint32_t sw, uint32_t sh) 2237 : flinger(flinger), dpy(dpy), 2238 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), result(PERMISSION_DENIED) 2239 { 2240 } 2241 status_t getResult() const { 2242 return result; 2243 } 2244 virtual bool handler() { 2245 Mutex::Autolock _l(flinger->mStateLock); 2246 2247 // if we have secure windows, never allow the screen capture 2248 if (flinger->mSecureFrameBuffer) 2249 return true; 2250 2251 result = flinger->captureScreenImplLocked(dpy, 2252 heap, w, h, f, sw, sh); 2253 2254 return true; 2255 } 2256 }; 2257 2258 sp<MessageBase> msg = new MessageCaptureScreen(this, 2259 dpy, heap, width, height, format, sw, sh); 2260 status_t res = postMessageSync(msg); 2261 if (res == NO_ERROR) { 2262 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2263 } 2264 return res; 2265} 2266 2267// --------------------------------------------------------------------------- 2268 2269sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2270{ 2271 sp<Layer> result; 2272 Mutex::Autolock _l(mStateLock); 2273 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2274 return result; 2275} 2276 2277// --------------------------------------------------------------------------- 2278 2279Client::Client(const sp<SurfaceFlinger>& flinger) 2280 : mFlinger(flinger), mNameGenerator(1) 2281{ 2282} 2283 2284Client::~Client() 2285{ 2286 const size_t count = mLayers.size(); 2287 for (size_t i=0 ; i<count ; i++) { 2288 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2289 if (layer != 0) { 2290 mFlinger->removeLayer(layer); 2291 } 2292 } 2293} 2294 2295status_t Client::initCheck() const { 2296 return NO_ERROR; 2297} 2298 2299ssize_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2300{ 2301 int32_t name = android_atomic_inc(&mNameGenerator); 2302 mLayers.add(name, layer); 2303 return name; 2304} 2305 2306void Client::detachLayer(const LayerBaseClient* layer) 2307{ 2308 // we do a linear search here, because this doesn't happen often 2309 const size_t count = mLayers.size(); 2310 for (size_t i=0 ; i<count ; i++) { 2311 if (mLayers.valueAt(i) == layer) { 2312 mLayers.removeItemsAt(i, 1); 2313 break; 2314 } 2315 } 2316} 2317sp<LayerBaseClient> Client::getLayerUser(int32_t i) const { 2318 sp<LayerBaseClient> lbc; 2319 const wp<LayerBaseClient>& layer(mLayers.valueFor(i)); 2320 if (layer != 0) { 2321 lbc = layer.promote(); 2322 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2323 } 2324 return lbc; 2325} 2326 2327sp<IMemoryHeap> Client::getControlBlock() const { 2328 return 0; 2329} 2330ssize_t Client::getTokenForSurface(const sp<ISurface>& sur) const { 2331 return -1; 2332} 2333sp<ISurface> Client::createSurface( 2334 ISurfaceComposerClient::surface_data_t* params, int pid, 2335 const String8& name, 2336 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2337 uint32_t flags) 2338{ 2339 return mFlinger->createSurface(this, pid, name, params, 2340 display, w, h, format, flags); 2341} 2342status_t Client::destroySurface(SurfaceID sid) { 2343 return mFlinger->removeSurface(this, sid); 2344} 2345status_t Client::setState(int32_t count, const layer_state_t* states) { 2346 return mFlinger->setClientState(this, count, states); 2347} 2348 2349// --------------------------------------------------------------------------- 2350 2351UserClient::UserClient(const sp<SurfaceFlinger>& flinger) 2352 : ctrlblk(0), mBitmap(0), mFlinger(flinger) 2353{ 2354 const int pgsize = getpagesize(); 2355 const int cblksize = ((sizeof(SharedClient)+(pgsize-1))&~(pgsize-1)); 2356 2357 mCblkHeap = new MemoryHeapBase(cblksize, 0, 2358 "SurfaceFlinger Client control-block"); 2359 2360 ctrlblk = static_cast<SharedClient *>(mCblkHeap->getBase()); 2361 if (ctrlblk) { // construct the shared structure in-place. 2362 new(ctrlblk) SharedClient; 2363 } 2364} 2365 2366UserClient::~UserClient() 2367{ 2368 if (ctrlblk) { 2369 ctrlblk->~SharedClient(); // destroy our shared-structure. 2370 } 2371 2372 /* 2373 * When a UserClient dies, it's unclear what to do exactly. 2374 * We could go ahead and destroy all surfaces linked to that client 2375 * however, it wouldn't be fair to the main Client 2376 * (usually the the window-manager), which might want to re-target 2377 * the layer to another UserClient. 2378 * I think the best is to do nothing, or not much; in most cases the 2379 * WM itself will go ahead and clean things up when it detects a client of 2380 * his has died. 2381 * The remaining question is what to display? currently we keep 2382 * just keep the current buffer. 2383 */ 2384} 2385 2386status_t UserClient::initCheck() const { 2387 return ctrlblk == 0 ? NO_INIT : NO_ERROR; 2388} 2389 2390void UserClient::detachLayer(const Layer* layer) 2391{ 2392 int32_t name = layer->getToken(); 2393 if (name >= 0) { 2394 int32_t mask = 1LU<<name; 2395 if ((android_atomic_and(~mask, &mBitmap) & mask) == 0) { 2396 LOGW("token %d wasn't marked as used %08x", name, int(mBitmap)); 2397 } 2398 } 2399} 2400 2401sp<IMemoryHeap> UserClient::getControlBlock() const { 2402 return mCblkHeap; 2403} 2404 2405ssize_t UserClient::getTokenForSurface(const sp<ISurface>& sur) const 2406{ 2407 int32_t name = NAME_NOT_FOUND; 2408 sp<Layer> layer(mFlinger->getLayer(sur)); 2409 if (layer == 0) return name; 2410 2411 // if this layer already has a token, just return it 2412 name = layer->getToken(); 2413 if ((name >= 0) && (layer->getClient() == this)) 2414 return name; 2415 2416 name = 0; 2417 do { 2418 int32_t mask = 1LU<<name; 2419 if ((android_atomic_or(mask, &mBitmap) & mask) == 0) { 2420 // we found and locked that name 2421 status_t err = layer->setToken( 2422 const_cast<UserClient*>(this), ctrlblk, name); 2423 if (err != NO_ERROR) { 2424 // free the name 2425 android_atomic_and(~mask, &mBitmap); 2426 name = err; 2427 } 2428 break; 2429 } 2430 if (++name >= SharedBufferStack::NUM_LAYERS_MAX) 2431 name = NO_MEMORY; 2432 } while(name >= 0); 2433 2434 //LOGD("getTokenForSurface(%p) => %d (client=%p, bitmap=%08lx)", 2435 // sur->asBinder().get(), name, this, mBitmap); 2436 return name; 2437} 2438 2439sp<ISurface> UserClient::createSurface( 2440 ISurfaceComposerClient::surface_data_t* params, int pid, 2441 const String8& name, 2442 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2443 uint32_t flags) { 2444 return 0; 2445} 2446status_t UserClient::destroySurface(SurfaceID sid) { 2447 return INVALID_OPERATION; 2448} 2449status_t UserClient::setState(int32_t count, const layer_state_t* states) { 2450 return INVALID_OPERATION; 2451} 2452 2453// --------------------------------------------------------------------------- 2454 2455GraphicPlane::GraphicPlane() 2456 : mHw(0) 2457{ 2458} 2459 2460GraphicPlane::~GraphicPlane() { 2461 delete mHw; 2462} 2463 2464bool GraphicPlane::initialized() const { 2465 return mHw ? true : false; 2466} 2467 2468int GraphicPlane::getWidth() const { 2469 return mWidth; 2470} 2471 2472int GraphicPlane::getHeight() const { 2473 return mHeight; 2474} 2475 2476void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2477{ 2478 mHw = hw; 2479 2480 // initialize the display orientation transform. 2481 // it's a constant that should come from the display driver. 2482 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2483 char property[PROPERTY_VALUE_MAX]; 2484 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2485 //displayOrientation 2486 switch (atoi(property)) { 2487 case 90: 2488 displayOrientation = ISurfaceComposer::eOrientation90; 2489 break; 2490 case 270: 2491 displayOrientation = ISurfaceComposer::eOrientation270; 2492 break; 2493 } 2494 } 2495 2496 const float w = hw->getWidth(); 2497 const float h = hw->getHeight(); 2498 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2499 &mDisplayTransform); 2500 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2501 mDisplayWidth = h; 2502 mDisplayHeight = w; 2503 } else { 2504 mDisplayWidth = w; 2505 mDisplayHeight = h; 2506 } 2507 2508 setOrientation(ISurfaceComposer::eOrientationDefault); 2509} 2510 2511status_t GraphicPlane::orientationToTransfrom( 2512 int orientation, int w, int h, Transform* tr) 2513{ 2514 uint32_t flags = 0; 2515 switch (orientation) { 2516 case ISurfaceComposer::eOrientationDefault: 2517 flags = Transform::ROT_0; 2518 break; 2519 case ISurfaceComposer::eOrientation90: 2520 flags = Transform::ROT_90; 2521 break; 2522 case ISurfaceComposer::eOrientation180: 2523 flags = Transform::ROT_180; 2524 break; 2525 case ISurfaceComposer::eOrientation270: 2526 flags = Transform::ROT_270; 2527 break; 2528 default: 2529 return BAD_VALUE; 2530 } 2531 tr->set(flags, w, h); 2532 return NO_ERROR; 2533} 2534 2535status_t GraphicPlane::setOrientation(int orientation) 2536{ 2537 // If the rotation can be handled in hardware, this is where 2538 // the magic should happen. 2539 2540 const DisplayHardware& hw(displayHardware()); 2541 const float w = mDisplayWidth; 2542 const float h = mDisplayHeight; 2543 mWidth = int(w); 2544 mHeight = int(h); 2545 2546 Transform orientationTransform; 2547 GraphicPlane::orientationToTransfrom(orientation, w, h, 2548 &orientationTransform); 2549 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2550 mWidth = int(h); 2551 mHeight = int(w); 2552 } 2553 2554 mOrientation = orientation; 2555 mGlobalTransform = mDisplayTransform * orientationTransform; 2556 return NO_ERROR; 2557} 2558 2559const DisplayHardware& GraphicPlane::displayHardware() const { 2560 return *mHw; 2561} 2562 2563DisplayHardware& GraphicPlane::editDisplayHardware() { 2564 return *mHw; 2565} 2566 2567const Transform& GraphicPlane::transform() const { 2568 return mGlobalTransform; 2569} 2570 2571EGLDisplay GraphicPlane::getEGLDisplay() const { 2572 return mHw->getEGLDisplay(); 2573} 2574 2575// --------------------------------------------------------------------------- 2576 2577}; // namespace android 2578