1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19 #include <stdlib.h> 20 #include <stdio.h> 21 #include <stdint.h> 22 #include <unistd.h> 23 #include <fcntl.h> 24 #include <errno.h> 25 #include <math.h> 26 #include <limits.h> 27 #include <sys/types.h> 28 #include <sys/stat.h> 29 #include <sys/ioctl.h> 30 31 #include <cutils/log.h> 32 #include <cutils/properties.h> 33 34 #include <binder/IPCThreadState.h> 35 #include <binder/IServiceManager.h> 36 #include <binder/MemoryHeapBase.h> 37 #include <binder/PermissionCache.h> 38 39 #include <gui/IDisplayEventConnection.h> 40 41 #include <utils/String8.h> 42 #include <utils/String16.h> 43 #include <utils/StopWatch.h> 44 #include <utils/Trace.h> 45 46 #include <ui/GraphicBufferAllocator.h> 47 #include <ui/PixelFormat.h> 48 49 #include <GLES/gl.h> 50 51 #include "clz.h" 52 #include "DdmConnection.h" 53 #include "EventThread.h" 54 #include "GLExtensions.h" 55 #include "Layer.h" 56 #include "LayerDim.h" 57 #include "LayerScreenshot.h" 58 #include "SurfaceFlinger.h" 59 60 #include "DisplayHardware/DisplayHardware.h" 61 #include "DisplayHardware/HWComposer.h" 62 63 #include <private/android_filesystem_config.h> 64 #include <private/gui/SharedBufferStack.h> 65 #include <gui/BitTube.h> 66 67 #define EGL_VERSION_HW_ANDROID 0x3143 68 69 #define DISPLAY_COUNT 1 70 71 namespace android { 72 // --------------------------------------------------------------------------- 73 74 const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 75 const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 76 const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 77 const String16 sDump("android.permission.DUMP"); 78 79 // --------------------------------------------------------------------------- 80 81 SurfaceFlinger::SurfaceFlinger() 82 : BnSurfaceComposer(), Thread(false), 83 mTransactionFlags(0), 84 mTransationPending(false), 85 mLayersRemoved(false), 86 mBootTime(systemTime()), 87 mVisibleRegionsDirty(false), 88 mHwWorkListDirty(false), 89 mElectronBeamAnimationMode(0), 90 mDebugRegion(0), 91 mDebugDDMS(0), 92 mDebugDisableHWC(0), 93 mDebugDisableTransformHint(0), 94 mDebugInSwapBuffers(0), 95 mLastSwapBufferTime(0), 96 mDebugInTransaction(0), 97 mLastTransactionTime(0), 98 mBootFinished(false), 99 mSecureFrameBuffer(0) 100 { 101 init(); 102 } 103 104 void SurfaceFlinger::init() 105 { 106 ALOGI("SurfaceFlinger is starting"); 107 108 // debugging stuff... 109 char value[PROPERTY_VALUE_MAX]; 110 111 property_get("debug.sf.showupdates", value, "0"); 112 mDebugRegion = atoi(value); 113 114 #ifdef DDMS_DEBUGGING 115 property_get("debug.sf.ddms", value, "0"); 116 mDebugDDMS = atoi(value); 117 if (mDebugDDMS) { 118 DdmConnection::start(getServiceName()); 119 } 120 #endif 121 122 ALOGI_IF(mDebugRegion, "showupdates enabled"); 123 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 124 } 125 126 void SurfaceFlinger::onFirstRef() 127 { 128 mEventQueue.init(this); 129 130 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 131 132 // Wait for the main thread to be done with its initialization 133 mReadyToRunBarrier.wait(); 134 } 135 136 137 SurfaceFlinger::~SurfaceFlinger() 138 { 139 glDeleteTextures(1, &mWormholeTexName); 140 } 141 142 void SurfaceFlinger::binderDied(const wp<IBinder>& who) 143 { 144 // the window manager died on us. prepare its eulogy. 145 146 // reset screen orientation 147 Vector<ComposerState> state; 148 setTransactionState(state, eOrientationDefault, 0); 149 150 // restart the boot-animation 151 startBootAnim(); 152 } 153 154 sp<IMemoryHeap> SurfaceFlinger::getCblk() const 155 { 156 return mServerHeap; 157 } 158 159 sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 160 { 161 sp<ISurfaceComposerClient> bclient; 162 sp<Client> client(new Client(this)); 163 status_t err = client->initCheck(); 164 if (err == NO_ERROR) { 165 bclient = client; 166 } 167 return bclient; 168 } 169 170 sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 171 { 172 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 173 return gba; 174 } 175 176 const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 177 { 178 ALOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 179 const GraphicPlane& plane(mGraphicPlanes[dpy]); 180 return plane; 181 } 182 183 GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 184 { 185 return const_cast<GraphicPlane&>( 186 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 187 } 188 189 void SurfaceFlinger::bootFinished() 190 { 191 const nsecs_t now = systemTime(); 192 const nsecs_t duration = now - mBootTime; 193 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 194 mBootFinished = true; 195 196 // wait patiently for the window manager death 197 const String16 name("window"); 198 sp<IBinder> window(defaultServiceManager()->getService(name)); 199 if (window != 0) { 200 window->linkToDeath(this); 201 } 202 203 // stop boot animation 204 // formerly we would just kill the process, but we now ask it to exit so it 205 // can choose where to stop the animation. 206 property_set("service.bootanim.exit", "1"); 207 } 208 209 static inline uint16_t pack565(int r, int g, int b) { 210 return (r<<11)|(g<<5)|b; 211 } 212 213 status_t SurfaceFlinger::readyToRun() 214 { 215 ALOGI( "SurfaceFlinger's main thread ready to run. " 216 "Initializing graphics H/W..."); 217 218 // we only support one display currently 219 int dpy = 0; 220 221 { 222 // initialize the main display 223 GraphicPlane& plane(graphicPlane(dpy)); 224 DisplayHardware* const hw = new DisplayHardware(this, dpy); 225 plane.setDisplayHardware(hw); 226 } 227 228 // create the shared control-block 229 mServerHeap = new MemoryHeapBase(4096, 230 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 231 ALOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 232 233 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 234 ALOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 235 236 new(mServerCblk) surface_flinger_cblk_t; 237 238 // initialize primary screen 239 // (other display should be initialized in the same manner, but 240 // asynchronously, as they could come and go. None of this is supported 241 // yet). 242 const GraphicPlane& plane(graphicPlane(dpy)); 243 const DisplayHardware& hw = plane.displayHardware(); 244 const uint32_t w = hw.getWidth(); 245 const uint32_t h = hw.getHeight(); 246 const uint32_t f = hw.getFormat(); 247 hw.makeCurrent(); 248 249 // initialize the shared control block 250 mServerCblk->connected |= 1<<dpy; 251 display_cblk_t* dcblk = mServerCblk->displays + dpy; 252 memset(dcblk, 0, sizeof(display_cblk_t)); 253 dcblk->w = plane.getWidth(); 254 dcblk->h = plane.getHeight(); 255 dcblk->format = f; 256 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 257 dcblk->xdpi = hw.getDpiX(); 258 dcblk->ydpi = hw.getDpiY(); 259 dcblk->fps = hw.getRefreshRate(); 260 dcblk->density = hw.getDensity(); 261 262 // Initialize OpenGL|ES 263 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 264 glPixelStorei(GL_PACK_ALIGNMENT, 4); 265 glEnableClientState(GL_VERTEX_ARRAY); 266 glShadeModel(GL_FLAT); 267 glDisable(GL_DITHER); 268 glDisable(GL_CULL_FACE); 269 270 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 271 const uint16_t g1 = pack565(0x17,0x2f,0x17); 272 const uint16_t wormholeTexData[4] = { g0, g1, g1, g0 }; 273 glGenTextures(1, &mWormholeTexName); 274 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 275 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 276 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 277 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 278 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 279 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 280 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, wormholeTexData); 281 282 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 283 glGenTextures(1, &mProtectedTexName); 284 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 285 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 286 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 287 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 288 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 289 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 290 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 291 292 glViewport(0, 0, w, h); 293 glMatrixMode(GL_PROJECTION); 294 glLoadIdentity(); 295 // put the origin in the left-bottom corner 296 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 297 298 299 // start the EventThread 300 mEventThread = new EventThread(this); 301 mEventQueue.setEventThread(mEventThread); 302 hw.startSleepManagement(); 303 304 /* 305 * We're now ready to accept clients... 306 */ 307 308 mReadyToRunBarrier.open(); 309 310 // start boot animation 311 startBootAnim(); 312 313 return NO_ERROR; 314 } 315 316 void SurfaceFlinger::startBootAnim() { 317 // start boot animation 318 property_set("service.bootanim.exit", "0"); 319 property_set("ctl.start", "bootanim"); 320 } 321 322 // ---------------------------------------------------------------------------- 323 324 bool SurfaceFlinger::authenticateSurfaceTexture( 325 const sp<ISurfaceTexture>& surfaceTexture) const { 326 Mutex::Autolock _l(mStateLock); 327 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 328 329 // Check the visible layer list for the ISurface 330 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 331 size_t count = currentLayers.size(); 332 for (size_t i=0 ; i<count ; i++) { 333 const sp<LayerBase>& layer(currentLayers[i]); 334 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 335 if (lbc != NULL) { 336 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 337 if (lbcBinder == surfaceTextureBinder) { 338 return true; 339 } 340 } 341 } 342 343 // Check the layers in the purgatory. This check is here so that if a 344 // SurfaceTexture gets destroyed before all the clients are done using it, 345 // the error will not be reported as "surface XYZ is not authenticated", but 346 // will instead fail later on when the client tries to use the surface, 347 // which should be reported as "surface XYZ returned an -ENODEV". The 348 // purgatorized layers are no less authentic than the visible ones, so this 349 // should not cause any harm. 350 size_t purgatorySize = mLayerPurgatory.size(); 351 for (size_t i=0 ; i<purgatorySize ; i++) { 352 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 353 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 354 if (lbc != NULL) { 355 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 356 if (lbcBinder == surfaceTextureBinder) { 357 return true; 358 } 359 } 360 } 361 362 return false; 363 } 364 365 // ---------------------------------------------------------------------------- 366 367 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 368 return mEventThread->createEventConnection(); 369 } 370 371 // ---------------------------------------------------------------------------- 372 373 void SurfaceFlinger::waitForEvent() { 374 mEventQueue.waitMessage(); 375 } 376 377 void SurfaceFlinger::signalTransaction() { 378 mEventQueue.invalidate(); 379 } 380 381 void SurfaceFlinger::signalLayerUpdate() { 382 mEventQueue.invalidate(); 383 } 384 385 void SurfaceFlinger::signalRefresh() { 386 mEventQueue.refresh(); 387 } 388 389 status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 390 nsecs_t reltime, uint32_t flags) { 391 return mEventQueue.postMessage(msg, reltime); 392 } 393 394 status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 395 nsecs_t reltime, uint32_t flags) { 396 status_t res = mEventQueue.postMessage(msg, reltime); 397 if (res == NO_ERROR) { 398 msg->wait(); 399 } 400 return res; 401 } 402 403 bool SurfaceFlinger::threadLoop() 404 { 405 waitForEvent(); 406 return true; 407 } 408 409 void SurfaceFlinger::onMessageReceived(int32_t what) 410 { 411 ATRACE_CALL(); 412 switch (what) { 413 case MessageQueue::REFRESH: { 414 // case MessageQueue::INVALIDATE: { 415 // if we're in a global transaction, don't do anything. 416 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 417 uint32_t transactionFlags = peekTransactionFlags(mask); 418 if (CC_UNLIKELY(transactionFlags)) { 419 handleTransaction(transactionFlags); 420 } 421 422 // post surfaces (if needed) 423 handlePageFlip(); 424 425 // signalRefresh(); 426 // 427 // } break; 428 // 429 // case MessageQueue::REFRESH: { 430 431 handleRefresh(); 432 433 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 434 435 // if (mDirtyRegion.isEmpty()) { 436 // return; 437 // } 438 439 if (CC_UNLIKELY(mHwWorkListDirty)) { 440 // build the h/w work list 441 handleWorkList(); 442 } 443 444 if (CC_LIKELY(hw.canDraw())) { 445 // repaint the framebuffer (if needed) 446 handleRepaint(); 447 // inform the h/w that we're done compositing 448 hw.compositionComplete(); 449 postFramebuffer(); 450 } else { 451 // pretend we did the post 452 hw.compositionComplete(); 453 } 454 455 } break; 456 } 457 } 458 459 void SurfaceFlinger::postFramebuffer() 460 { 461 ATRACE_CALL(); 462 // mSwapRegion can be empty here is some cases, for instance if a hidden 463 // or fully transparent window is updating. 464 // in that case, we need to flip anyways to not risk a deadlock with 465 // h/w composer. 466 467 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 468 const nsecs_t now = systemTime(); 469 mDebugInSwapBuffers = now; 470 hw.flip(mSwapRegion); 471 472 size_t numLayers = mVisibleLayersSortedByZ.size(); 473 for (size_t i = 0; i < numLayers; i++) { 474 mVisibleLayersSortedByZ[i]->onLayerDisplayed(); 475 } 476 477 mLastSwapBufferTime = systemTime() - now; 478 mDebugInSwapBuffers = 0; 479 mSwapRegion.clear(); 480 } 481 482 void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 483 { 484 ATRACE_CALL(); 485 486 Mutex::Autolock _l(mStateLock); 487 const nsecs_t now = systemTime(); 488 mDebugInTransaction = now; 489 490 // Here we're guaranteed that some transaction flags are set 491 // so we can call handleTransactionLocked() unconditionally. 492 // We call getTransactionFlags(), which will also clear the flags, 493 // with mStateLock held to guarantee that mCurrentState won't change 494 // until the transaction is committed. 495 496 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 497 transactionFlags = getTransactionFlags(mask); 498 handleTransactionLocked(transactionFlags); 499 500 mLastTransactionTime = systemTime() - now; 501 mDebugInTransaction = 0; 502 invalidateHwcGeometry(); 503 // here the transaction has been committed 504 } 505 506 void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 507 { 508 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 509 const size_t count = currentLayers.size(); 510 511 /* 512 * Traversal of the children 513 * (perform the transaction for each of them if needed) 514 */ 515 516 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 517 if (layersNeedTransaction) { 518 for (size_t i=0 ; i<count ; i++) { 519 const sp<LayerBase>& layer = currentLayers[i]; 520 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 521 if (!trFlags) continue; 522 523 const uint32_t flags = layer->doTransaction(0); 524 if (flags & Layer::eVisibleRegion) 525 mVisibleRegionsDirty = true; 526 } 527 } 528 529 /* 530 * Perform our own transaction if needed 531 */ 532 533 if (transactionFlags & eTransactionNeeded) { 534 if (mCurrentState.orientation != mDrawingState.orientation) { 535 // the orientation has changed, recompute all visible regions 536 // and invalidate everything. 537 538 const int dpy = 0; 539 const int orientation = mCurrentState.orientation; 540 // Currently unused: const uint32_t flags = mCurrentState.orientationFlags; 541 GraphicPlane& plane(graphicPlane(dpy)); 542 plane.setOrientation(orientation); 543 544 // update the shared control block 545 const DisplayHardware& hw(plane.displayHardware()); 546 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 547 dcblk->orientation = orientation; 548 dcblk->w = plane.getWidth(); 549 dcblk->h = plane.getHeight(); 550 551 mVisibleRegionsDirty = true; 552 mDirtyRegion.set(hw.bounds()); 553 } 554 555 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 556 // layers have been added 557 mVisibleRegionsDirty = true; 558 } 559 560 // some layers might have been removed, so 561 // we need to update the regions they're exposing. 562 if (mLayersRemoved) { 563 mLayersRemoved = false; 564 mVisibleRegionsDirty = true; 565 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 566 const size_t count = previousLayers.size(); 567 for (size_t i=0 ; i<count ; i++) { 568 const sp<LayerBase>& layer(previousLayers[i]); 569 if (currentLayers.indexOf( layer ) < 0) { 570 // this layer is not visible anymore 571 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 572 } 573 } 574 } 575 } 576 577 commitTransaction(); 578 } 579 580 void SurfaceFlinger::computeVisibleRegions( 581 const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 582 { 583 ATRACE_CALL(); 584 585 const GraphicPlane& plane(graphicPlane(0)); 586 const Transform& planeTransform(plane.transform()); 587 const DisplayHardware& hw(plane.displayHardware()); 588 const Region screenRegion(hw.bounds()); 589 590 Region aboveOpaqueLayers; 591 Region aboveCoveredLayers; 592 Region dirty; 593 594 bool secureFrameBuffer = false; 595 596 size_t i = currentLayers.size(); 597 while (i--) { 598 const sp<LayerBase>& layer = currentLayers[i]; 599 layer->validateVisibility(planeTransform); 600 601 // start with the whole surface at its current location 602 const Layer::State& s(layer->drawingState()); 603 604 /* 605 * opaqueRegion: area of a surface that is fully opaque. 606 */ 607 Region opaqueRegion; 608 609 /* 610 * visibleRegion: area of a surface that is visible on screen 611 * and not fully transparent. This is essentially the layer's 612 * footprint minus the opaque regions above it. 613 * Areas covered by a translucent surface are considered visible. 614 */ 615 Region visibleRegion; 616 617 /* 618 * coveredRegion: area of a surface that is covered by all 619 * visible regions above it (which includes the translucent areas). 620 */ 621 Region coveredRegion; 622 623 624 // handle hidden surfaces by setting the visible region to empty 625 if (CC_LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 626 const bool translucent = !layer->isOpaque(); 627 const Rect bounds(layer->visibleBounds()); 628 visibleRegion.set(bounds); 629 visibleRegion.andSelf(screenRegion); 630 if (!visibleRegion.isEmpty()) { 631 // Remove the transparent area from the visible region 632 if (translucent) { 633 visibleRegion.subtractSelf(layer->transparentRegionScreen); 634 } 635 636 // compute the opaque region 637 const int32_t layerOrientation = layer->getOrientation(); 638 if (s.alpha==255 && !translucent && 639 ((layerOrientation & Transform::ROT_INVALID) == false)) { 640 // the opaque region is the layer's footprint 641 opaqueRegion = visibleRegion; 642 } 643 } 644 } 645 646 // Clip the covered region to the visible region 647 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 648 649 // Update aboveCoveredLayers for next (lower) layer 650 aboveCoveredLayers.orSelf(visibleRegion); 651 652 // subtract the opaque region covered by the layers above us 653 visibleRegion.subtractSelf(aboveOpaqueLayers); 654 655 // compute this layer's dirty region 656 if (layer->contentDirty) { 657 // we need to invalidate the whole region 658 dirty = visibleRegion; 659 // as well, as the old visible region 660 dirty.orSelf(layer->visibleRegionScreen); 661 layer->contentDirty = false; 662 } else { 663 /* compute the exposed region: 664 * the exposed region consists of two components: 665 * 1) what's VISIBLE now and was COVERED before 666 * 2) what's EXPOSED now less what was EXPOSED before 667 * 668 * note that (1) is conservative, we start with the whole 669 * visible region but only keep what used to be covered by 670 * something -- which mean it may have been exposed. 671 * 672 * (2) handles areas that were not covered by anything but got 673 * exposed because of a resize. 674 */ 675 const Region newExposed = visibleRegion - coveredRegion; 676 const Region oldVisibleRegion = layer->visibleRegionScreen; 677 const Region oldCoveredRegion = layer->coveredRegionScreen; 678 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 679 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 680 } 681 dirty.subtractSelf(aboveOpaqueLayers); 682 683 // accumulate to the screen dirty region 684 dirtyRegion.orSelf(dirty); 685 686 // Update aboveOpaqueLayers for next (lower) layer 687 aboveOpaqueLayers.orSelf(opaqueRegion); 688 689 // Store the visible region is screen space 690 layer->setVisibleRegion(visibleRegion); 691 layer->setCoveredRegion(coveredRegion); 692 693 // If a secure layer is partially visible, lock-down the screen! 694 if (layer->isSecure() && !visibleRegion.isEmpty()) { 695 secureFrameBuffer = true; 696 } 697 } 698 699 // invalidate the areas where a layer was removed 700 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 701 mDirtyRegionRemovedLayer.clear(); 702 703 mSecureFrameBuffer = secureFrameBuffer; 704 opaqueRegion = aboveOpaqueLayers; 705 } 706 707 708 void SurfaceFlinger::commitTransaction() 709 { 710 if (!mLayersPendingRemoval.isEmpty()) { 711 // Notify removed layers now that they can't be drawn from 712 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 713 mLayersPendingRemoval[i]->onRemoved(); 714 } 715 mLayersPendingRemoval.clear(); 716 } 717 718 mDrawingState = mCurrentState; 719 mTransationPending = false; 720 mTransactionCV.broadcast(); 721 } 722 723 void SurfaceFlinger::handlePageFlip() 724 { 725 ATRACE_CALL(); 726 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 727 const Region screenRegion(hw.bounds()); 728 729 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 730 const bool visibleRegions = lockPageFlip(currentLayers); 731 732 if (visibleRegions || mVisibleRegionsDirty) { 733 Region opaqueRegion; 734 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 735 736 /* 737 * rebuild the visible layer list 738 */ 739 const size_t count = currentLayers.size(); 740 mVisibleLayersSortedByZ.clear(); 741 mVisibleLayersSortedByZ.setCapacity(count); 742 for (size_t i=0 ; i<count ; i++) { 743 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 744 mVisibleLayersSortedByZ.add(currentLayers[i]); 745 } 746 747 mWormholeRegion = screenRegion.subtract(opaqueRegion); 748 mVisibleRegionsDirty = false; 749 invalidateHwcGeometry(); 750 } 751 752 unlockPageFlip(currentLayers); 753 754 mDirtyRegion.orSelf(getAndClearInvalidateRegion()); 755 mDirtyRegion.andSelf(screenRegion); 756 } 757 758 void SurfaceFlinger::invalidateHwcGeometry() 759 { 760 mHwWorkListDirty = true; 761 } 762 763 bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 764 { 765 bool recomputeVisibleRegions = false; 766 size_t count = currentLayers.size(); 767 sp<LayerBase> const* layers = currentLayers.array(); 768 for (size_t i=0 ; i<count ; i++) { 769 const sp<LayerBase>& layer(layers[i]); 770 layer->lockPageFlip(recomputeVisibleRegions); 771 } 772 return recomputeVisibleRegions; 773 } 774 775 void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 776 { 777 const GraphicPlane& plane(graphicPlane(0)); 778 const Transform& planeTransform(plane.transform()); 779 const size_t count = currentLayers.size(); 780 sp<LayerBase> const* layers = currentLayers.array(); 781 for (size_t i=0 ; i<count ; i++) { 782 const sp<LayerBase>& layer(layers[i]); 783 layer->unlockPageFlip(planeTransform, mDirtyRegion); 784 } 785 } 786 787 void SurfaceFlinger::handleRefresh() 788 { 789 bool needInvalidate = false; 790 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 791 const size_t count = currentLayers.size(); 792 for (size_t i=0 ; i<count ; i++) { 793 const sp<LayerBase>& layer(currentLayers[i]); 794 if (layer->onPreComposition()) { 795 needInvalidate = true; 796 } 797 } 798 if (needInvalidate) { 799 signalLayerUpdate(); 800 } 801 } 802 803 804 void SurfaceFlinger::handleWorkList() 805 { 806 mHwWorkListDirty = false; 807 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 808 if (hwc.initCheck() == NO_ERROR) { 809 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 810 const size_t count = currentLayers.size(); 811 hwc.createWorkList(count); 812 hwc_layer_t* const cur(hwc.getLayers()); 813 for (size_t i=0 ; cur && i<count ; i++) { 814 currentLayers[i]->setGeometry(&cur[i]); 815 if (mDebugDisableHWC || mDebugRegion) { 816 cur[i].compositionType = HWC_FRAMEBUFFER; 817 cur[i].flags |= HWC_SKIP_LAYER; 818 } 819 } 820 } 821 } 822 823 void SurfaceFlinger::handleRepaint() 824 { 825 ATRACE_CALL(); 826 827 // compute the invalid region 828 mSwapRegion.orSelf(mDirtyRegion); 829 830 if (CC_UNLIKELY(mDebugRegion)) { 831 debugFlashRegions(); 832 } 833 834 // set the frame buffer 835 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 836 glMatrixMode(GL_MODELVIEW); 837 glLoadIdentity(); 838 839 uint32_t flags = hw.getFlags(); 840 if (flags & DisplayHardware::SWAP_RECTANGLE) { 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 mDirtyRegion.set(mSwapRegion.bounds()); 845 } else { 846 if (flags & DisplayHardware::PARTIAL_UPDATES) { 847 // We need to redraw the rectangle that will be updated 848 // (pushed to the framebuffer). 849 // This is needed because PARTIAL_UPDATES only takes one 850 // rectangle instead of a region (see DisplayHardware::flip()) 851 mDirtyRegion.set(mSwapRegion.bounds()); 852 } else { 853 // we need to redraw everything (the whole screen) 854 mDirtyRegion.set(hw.bounds()); 855 mSwapRegion = mDirtyRegion; 856 } 857 } 858 859 setupHardwareComposer(); 860 composeSurfaces(mDirtyRegion); 861 862 // update the swap region and clear the dirty region 863 mSwapRegion.orSelf(mDirtyRegion); 864 mDirtyRegion.clear(); 865 } 866 867 void SurfaceFlinger::setupHardwareComposer() 868 { 869 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 870 HWComposer& hwc(hw.getHwComposer()); 871 hwc_layer_t* const cur(hwc.getLayers()); 872 if (!cur) { 873 return; 874 } 875 876 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 877 size_t count = layers.size(); 878 879 ALOGE_IF(hwc.getNumLayers() != count, 880 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 881 hwc.getNumLayers(), count); 882 883 // just to be extra-safe, use the smallest count 884 if (hwc.initCheck() == NO_ERROR) { 885 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 886 } 887 888 /* 889 * update the per-frame h/w composer data for each layer 890 * and build the transparent region of the FB 891 */ 892 for (size_t i=0 ; i<count ; i++) { 893 const sp<LayerBase>& layer(layers[i]); 894 layer->setPerFrameData(&cur[i]); 895 } 896 status_t err = hwc.prepare(); 897 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 898 } 899 900 void SurfaceFlinger::composeSurfaces(const Region& dirty) 901 { 902 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 903 HWComposer& hwc(hw.getHwComposer()); 904 hwc_layer_t* const cur(hwc.getLayers()); 905 906 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 907 if (!cur || fbLayerCount) { 908 // Never touch the framebuffer if we don't have any framebuffer layers 909 910 if (hwc.getLayerCount(HWC_OVERLAY)) { 911 // when using overlays, we assume a fully transparent framebuffer 912 // NOTE: we could reduce how much we need to clear, for instance 913 // remove where there are opaque FB layers. however, on some 914 // GPUs doing a "clean slate" glClear might be more efficient. 915 // We'll revisit later if needed. 916 glClearColor(0, 0, 0, 0); 917 glClear(GL_COLOR_BUFFER_BIT); 918 } else { 919 // screen is already cleared here 920 if (!mWormholeRegion.isEmpty()) { 921 // can happen with SurfaceView 922 drawWormhole(); 923 } 924 } 925 926 /* 927 * and then, render the layers targeted at the framebuffer 928 */ 929 930 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 931 const size_t count = layers.size(); 932 933 for (size_t i=0 ; i<count ; i++) { 934 const sp<LayerBase>& layer(layers[i]); 935 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 936 if (!clip.isEmpty()) { 937 if (cur && (cur[i].compositionType == HWC_OVERLAY)) { 938 if (i && (cur[i].hints & HWC_HINT_CLEAR_FB) 939 && layer->isOpaque()) { 940 // never clear the very first layer since we're 941 // guaranteed the FB is already cleared 942 layer->clearWithOpenGL(clip); 943 } 944 continue; 945 } 946 // render the layer 947 layer->draw(clip); 948 } 949 } 950 } 951 } 952 953 void SurfaceFlinger::debugFlashRegions() 954 { 955 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 956 const uint32_t flags = hw.getFlags(); 957 const int32_t height = hw.getHeight(); 958 if (mSwapRegion.isEmpty()) { 959 return; 960 } 961 962 if (!(flags & DisplayHardware::SWAP_RECTANGLE)) { 963 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 964 mDirtyRegion.bounds() : hw.bounds()); 965 composeSurfaces(repaint); 966 } 967 968 glDisable(GL_TEXTURE_EXTERNAL_OES); 969 glDisable(GL_TEXTURE_2D); 970 glDisable(GL_BLEND); 971 972 static int toggle = 0; 973 toggle = 1 - toggle; 974 if (toggle) { 975 glColor4f(1, 0, 1, 1); 976 } else { 977 glColor4f(1, 1, 0, 1); 978 } 979 980 Region::const_iterator it = mDirtyRegion.begin(); 981 Region::const_iterator const end = mDirtyRegion.end(); 982 while (it != end) { 983 const Rect& r = *it++; 984 GLfloat vertices[][2] = { 985 { r.left, height - r.top }, 986 { r.left, height - r.bottom }, 987 { r.right, height - r.bottom }, 988 { r.right, height - r.top } 989 }; 990 glVertexPointer(2, GL_FLOAT, 0, vertices); 991 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 992 } 993 994 hw.flip(mSwapRegion); 995 996 if (mDebugRegion > 1) 997 usleep(mDebugRegion * 1000); 998 } 999 1000 void SurfaceFlinger::drawWormhole() const 1001 { 1002 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1003 if (region.isEmpty()) 1004 return; 1005 1006 glDisable(GL_TEXTURE_EXTERNAL_OES); 1007 glDisable(GL_TEXTURE_2D); 1008 glDisable(GL_BLEND); 1009 glColor4f(0,0,0,0); 1010 1011 GLfloat vertices[4][2]; 1012 glVertexPointer(2, GL_FLOAT, 0, vertices); 1013 Region::const_iterator it = region.begin(); 1014 Region::const_iterator const end = region.end(); 1015 while (it != end) { 1016 const Rect& r = *it++; 1017 vertices[0][0] = r.left; 1018 vertices[0][1] = r.top; 1019 vertices[1][0] = r.right; 1020 vertices[1][1] = r.top; 1021 vertices[2][0] = r.right; 1022 vertices[2][1] = r.bottom; 1023 vertices[3][0] = r.left; 1024 vertices[3][1] = r.bottom; 1025 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1026 } 1027 } 1028 1029 status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1030 { 1031 Mutex::Autolock _l(mStateLock); 1032 addLayer_l(layer); 1033 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1034 return NO_ERROR; 1035 } 1036 1037 status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1038 { 1039 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1040 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1041 } 1042 1043 ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1044 const sp<LayerBaseClient>& lbc) 1045 { 1046 // attach this layer to the client 1047 size_t name = client->attachLayer(lbc); 1048 1049 Mutex::Autolock _l(mStateLock); 1050 1051 // add this layer to the current state list 1052 addLayer_l(lbc); 1053 1054 return ssize_t(name); 1055 } 1056 1057 status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1058 { 1059 Mutex::Autolock _l(mStateLock); 1060 status_t err = purgatorizeLayer_l(layer); 1061 if (err == NO_ERROR) 1062 setTransactionFlags(eTransactionNeeded); 1063 return err; 1064 } 1065 1066 status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1067 { 1068 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1069 if (lbc != 0) { 1070 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1071 } 1072 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1073 if (index >= 0) { 1074 mLayersRemoved = true; 1075 return NO_ERROR; 1076 } 1077 return status_t(index); 1078 } 1079 1080 status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1081 { 1082 // First add the layer to the purgatory list, which makes sure it won't 1083 // go away, then remove it from the main list (through a transaction). 1084 ssize_t err = removeLayer_l(layerBase); 1085 if (err >= 0) { 1086 mLayerPurgatory.add(layerBase); 1087 } 1088 1089 mLayersPendingRemoval.push(layerBase); 1090 1091 // it's possible that we don't find a layer, because it might 1092 // have been destroyed already -- this is not technically an error 1093 // from the user because there is a race between Client::destroySurface(), 1094 // ~Client() and ~ISurface(). 1095 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1096 } 1097 1098 status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1099 { 1100 layer->forceVisibilityTransaction(); 1101 setTransactionFlags(eTraversalNeeded); 1102 return NO_ERROR; 1103 } 1104 1105 uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1106 { 1107 return android_atomic_release_load(&mTransactionFlags); 1108 } 1109 1110 uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1111 { 1112 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1113 } 1114 1115 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1116 { 1117 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1118 if ((old & flags)==0) { // wake the server up 1119 signalTransaction(); 1120 } 1121 return old; 1122 } 1123 1124 1125 void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state, 1126 int orientation, uint32_t flags) { 1127 Mutex::Autolock _l(mStateLock); 1128 1129 uint32_t transactionFlags = 0; 1130 if (mCurrentState.orientation != orientation) { 1131 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1132 mCurrentState.orientation = orientation; 1133 transactionFlags |= eTransactionNeeded; 1134 } else if (orientation != eOrientationUnchanged) { 1135 ALOGW("setTransactionState: ignoring unrecognized orientation: %d", 1136 orientation); 1137 } 1138 } 1139 1140 const size_t count = state.size(); 1141 for (size_t i=0 ; i<count ; i++) { 1142 const ComposerState& s(state[i]); 1143 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1144 transactionFlags |= setClientStateLocked(client, s.state); 1145 } 1146 1147 if (transactionFlags) { 1148 // this triggers the transaction 1149 setTransactionFlags(transactionFlags); 1150 1151 // if this is a synchronous transaction, wait for it to take effect 1152 // before returning. 1153 if (flags & eSynchronous) { 1154 mTransationPending = true; 1155 } 1156 while (mTransationPending) { 1157 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1158 if (CC_UNLIKELY(err != NO_ERROR)) { 1159 // just in case something goes wrong in SF, return to the 1160 // called after a few seconds. 1161 ALOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1162 mTransationPending = false; 1163 break; 1164 } 1165 } 1166 } 1167 } 1168 1169 sp<ISurface> SurfaceFlinger::createSurface( 1170 ISurfaceComposerClient::surface_data_t* params, 1171 const String8& name, 1172 const sp<Client>& client, 1173 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1174 uint32_t flags) 1175 { 1176 sp<LayerBaseClient> layer; 1177 sp<ISurface> surfaceHandle; 1178 1179 if (int32_t(w|h) < 0) { 1180 ALOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1181 int(w), int(h)); 1182 return surfaceHandle; 1183 } 1184 1185 //ALOGD("createSurface for (%d x %d), name=%s", w, h, name.string()); 1186 sp<Layer> normalLayer; 1187 switch (flags & eFXSurfaceMask) { 1188 case eFXSurfaceNormal: 1189 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1190 layer = normalLayer; 1191 break; 1192 case eFXSurfaceBlur: 1193 // for now we treat Blur as Dim, until we can implement it 1194 // efficiently. 1195 case eFXSurfaceDim: 1196 layer = createDimSurface(client, d, w, h, flags); 1197 break; 1198 case eFXSurfaceScreenshot: 1199 layer = createScreenshotSurface(client, d, w, h, flags); 1200 break; 1201 } 1202 1203 if (layer != 0) { 1204 layer->initStates(w, h, flags); 1205 layer->setName(name); 1206 ssize_t token = addClientLayer(client, layer); 1207 1208 surfaceHandle = layer->getSurface(); 1209 if (surfaceHandle != 0) { 1210 params->token = token; 1211 params->identity = layer->getIdentity(); 1212 if (normalLayer != 0) { 1213 Mutex::Autolock _l(mStateLock); 1214 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1215 } 1216 } 1217 1218 setTransactionFlags(eTransactionNeeded); 1219 } 1220 1221 return surfaceHandle; 1222 } 1223 1224 sp<Layer> SurfaceFlinger::createNormalSurface( 1225 const sp<Client>& client, DisplayID display, 1226 uint32_t w, uint32_t h, uint32_t flags, 1227 PixelFormat& format) 1228 { 1229 // initialize the surfaces 1230 switch (format) { // TODO: take h/w into account 1231 case PIXEL_FORMAT_TRANSPARENT: 1232 case PIXEL_FORMAT_TRANSLUCENT: 1233 format = PIXEL_FORMAT_RGBA_8888; 1234 break; 1235 case PIXEL_FORMAT_OPAQUE: 1236 #ifdef NO_RGBX_8888 1237 format = PIXEL_FORMAT_RGB_565; 1238 #else 1239 format = PIXEL_FORMAT_RGBX_8888; 1240 #endif 1241 break; 1242 } 1243 1244 #ifdef NO_RGBX_8888 1245 if (format == PIXEL_FORMAT_RGBX_8888) 1246 format = PIXEL_FORMAT_RGBA_8888; 1247 #endif 1248 1249 sp<Layer> layer = new Layer(this, display, client); 1250 status_t err = layer->setBuffers(w, h, format, flags); 1251 if (CC_LIKELY(err != NO_ERROR)) { 1252 ALOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1253 layer.clear(); 1254 } 1255 return layer; 1256 } 1257 1258 sp<LayerDim> SurfaceFlinger::createDimSurface( 1259 const sp<Client>& client, DisplayID display, 1260 uint32_t w, uint32_t h, uint32_t flags) 1261 { 1262 sp<LayerDim> layer = new LayerDim(this, display, client); 1263 return layer; 1264 } 1265 1266 sp<LayerScreenshot> SurfaceFlinger::createScreenshotSurface( 1267 const sp<Client>& client, DisplayID display, 1268 uint32_t w, uint32_t h, uint32_t flags) 1269 { 1270 sp<LayerScreenshot> layer = new LayerScreenshot(this, display, client); 1271 return layer; 1272 } 1273 1274 status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1275 { 1276 /* 1277 * called by the window manager, when a surface should be marked for 1278 * destruction. 1279 * 1280 * The surface is removed from the current and drawing lists, but placed 1281 * in the purgatory queue, so it's not destroyed right-away (we need 1282 * to wait for all client's references to go away first). 1283 */ 1284 1285 status_t err = NAME_NOT_FOUND; 1286 Mutex::Autolock _l(mStateLock); 1287 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1288 1289 if (layer != 0) { 1290 err = purgatorizeLayer_l(layer); 1291 if (err == NO_ERROR) { 1292 setTransactionFlags(eTransactionNeeded); 1293 } 1294 } 1295 return err; 1296 } 1297 1298 status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1299 { 1300 // called by ~ISurface() when all references are gone 1301 status_t err = NO_ERROR; 1302 sp<LayerBaseClient> l(layer.promote()); 1303 if (l != NULL) { 1304 Mutex::Autolock _l(mStateLock); 1305 err = removeLayer_l(l); 1306 if (err == NAME_NOT_FOUND) { 1307 // The surface wasn't in the current list, which means it was 1308 // removed already, which means it is in the purgatory, 1309 // and need to be removed from there. 1310 ssize_t idx = mLayerPurgatory.remove(l); 1311 ALOGE_IF(idx < 0, 1312 "layer=%p is not in the purgatory list", l.get()); 1313 } 1314 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1315 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1316 } 1317 return err; 1318 } 1319 1320 uint32_t SurfaceFlinger::setClientStateLocked( 1321 const sp<Client>& client, 1322 const layer_state_t& s) 1323 { 1324 uint32_t flags = 0; 1325 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1326 if (layer != 0) { 1327 const uint32_t what = s.what; 1328 if (what & ePositionChanged) { 1329 if (layer->setPosition(s.x, s.y)) 1330 flags |= eTraversalNeeded; 1331 } 1332 if (what & eLayerChanged) { 1333 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1334 if (layer->setLayer(s.z)) { 1335 mCurrentState.layersSortedByZ.removeAt(idx); 1336 mCurrentState.layersSortedByZ.add(layer); 1337 // we need traversal (state changed) 1338 // AND transaction (list changed) 1339 flags |= eTransactionNeeded|eTraversalNeeded; 1340 } 1341 } 1342 if (what & eSizeChanged) { 1343 if (layer->setSize(s.w, s.h)) { 1344 flags |= eTraversalNeeded; 1345 } 1346 } 1347 if (what & eAlphaChanged) { 1348 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1349 flags |= eTraversalNeeded; 1350 } 1351 if (what & eMatrixChanged) { 1352 if (layer->setMatrix(s.matrix)) 1353 flags |= eTraversalNeeded; 1354 } 1355 if (what & eTransparentRegionChanged) { 1356 if (layer->setTransparentRegionHint(s.transparentRegion)) 1357 flags |= eTraversalNeeded; 1358 } 1359 if (what & eVisibilityChanged) { 1360 if (layer->setFlags(s.flags, s.mask)) 1361 flags |= eTraversalNeeded; 1362 } 1363 if (what & eCropChanged) { 1364 if (layer->setCrop(s.crop)) 1365 flags |= eTraversalNeeded; 1366 } 1367 } 1368 return flags; 1369 } 1370 1371 // --------------------------------------------------------------------------- 1372 1373 void SurfaceFlinger::onScreenAcquired() { 1374 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1375 hw.acquireScreen(); 1376 mEventThread->onScreenAcquired(); 1377 // this is a temporary work-around, eventually this should be called 1378 // by the power-manager 1379 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 1380 // from this point on, SF will process updates again 1381 repaintEverything(); 1382 } 1383 1384 void SurfaceFlinger::onScreenReleased() { 1385 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1386 if (hw.isScreenAcquired()) { 1387 mEventThread->onScreenReleased(); 1388 hw.releaseScreen(); 1389 // from this point on, SF will stop drawing 1390 } 1391 } 1392 1393 void SurfaceFlinger::screenAcquired() { 1394 class MessageScreenAcquired : public MessageBase { 1395 SurfaceFlinger* flinger; 1396 public: 1397 MessageScreenAcquired(SurfaceFlinger* flinger) : flinger(flinger) { } 1398 virtual bool handler() { 1399 flinger->onScreenAcquired(); 1400 return true; 1401 } 1402 }; 1403 sp<MessageBase> msg = new MessageScreenAcquired(this); 1404 postMessageSync(msg); 1405 } 1406 1407 void SurfaceFlinger::screenReleased() { 1408 class MessageScreenReleased : public MessageBase { 1409 SurfaceFlinger* flinger; 1410 public: 1411 MessageScreenReleased(SurfaceFlinger* flinger) : flinger(flinger) { } 1412 virtual bool handler() { 1413 flinger->onScreenReleased(); 1414 return true; 1415 } 1416 }; 1417 sp<MessageBase> msg = new MessageScreenReleased(this); 1418 postMessageSync(msg); 1419 } 1420 1421 // --------------------------------------------------------------------------- 1422 1423 status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1424 { 1425 const size_t SIZE = 4096; 1426 char buffer[SIZE]; 1427 String8 result; 1428 1429 if (!PermissionCache::checkCallingPermission(sDump)) { 1430 snprintf(buffer, SIZE, "Permission Denial: " 1431 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1432 IPCThreadState::self()->getCallingPid(), 1433 IPCThreadState::self()->getCallingUid()); 1434 result.append(buffer); 1435 } else { 1436 // Try to get the main lock, but don't insist if we can't 1437 // (this would indicate SF is stuck, but we want to be able to 1438 // print something in dumpsys). 1439 int retry = 3; 1440 while (mStateLock.tryLock()<0 && --retry>=0) { 1441 usleep(1000000); 1442 } 1443 const bool locked(retry >= 0); 1444 if (!locked) { 1445 snprintf(buffer, SIZE, 1446 "SurfaceFlinger appears to be unresponsive, " 1447 "dumping anyways (no locks held)\n"); 1448 result.append(buffer); 1449 } 1450 1451 bool dumpAll = true; 1452 size_t index = 0; 1453 size_t numArgs = args.size(); 1454 if (numArgs) { 1455 if ((index < numArgs) && 1456 (args[index] == String16("--list"))) { 1457 index++; 1458 listLayersLocked(args, index, result, buffer, SIZE); 1459 dumpAll = false; 1460 } 1461 1462 if ((index < numArgs) && 1463 (args[index] == String16("--latency"))) { 1464 index++; 1465 dumpStatsLocked(args, index, result, buffer, SIZE); 1466 dumpAll = false; 1467 } 1468 1469 if ((index < numArgs) && 1470 (args[index] == String16("--latency-clear"))) { 1471 index++; 1472 clearStatsLocked(args, index, result, buffer, SIZE); 1473 dumpAll = false; 1474 } 1475 } 1476 1477 if (dumpAll) { 1478 dumpAllLocked(result, buffer, SIZE); 1479 } 1480 1481 if (locked) { 1482 mStateLock.unlock(); 1483 } 1484 } 1485 write(fd, result.string(), result.size()); 1486 return NO_ERROR; 1487 } 1488 1489 void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 1490 String8& result, char* buffer, size_t SIZE) const 1491 { 1492 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1493 const size_t count = currentLayers.size(); 1494 for (size_t i=0 ; i<count ; i++) { 1495 const sp<LayerBase>& layer(currentLayers[i]); 1496 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1497 result.append(buffer); 1498 } 1499 } 1500 1501 void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 1502 String8& result, char* buffer, size_t SIZE) const 1503 { 1504 String8 name; 1505 if (index < args.size()) { 1506 name = String8(args[index]); 1507 index++; 1508 } 1509 1510 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1511 const size_t count = currentLayers.size(); 1512 for (size_t i=0 ; i<count ; i++) { 1513 const sp<LayerBase>& layer(currentLayers[i]); 1514 if (name.isEmpty()) { 1515 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 1516 result.append(buffer); 1517 } 1518 if (name.isEmpty() || (name == layer->getName())) { 1519 layer->dumpStats(result, buffer, SIZE); 1520 } 1521 } 1522 } 1523 1524 void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 1525 String8& result, char* buffer, size_t SIZE) const 1526 { 1527 String8 name; 1528 if (index < args.size()) { 1529 name = String8(args[index]); 1530 index++; 1531 } 1532 1533 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1534 const size_t count = currentLayers.size(); 1535 for (size_t i=0 ; i<count ; i++) { 1536 const sp<LayerBase>& layer(currentLayers[i]); 1537 if (name.isEmpty() || (name == layer->getName())) { 1538 layer->clearStats(); 1539 } 1540 } 1541 } 1542 1543 void SurfaceFlinger::dumpAllLocked( 1544 String8& result, char* buffer, size_t SIZE) const 1545 { 1546 // figure out if we're stuck somewhere 1547 const nsecs_t now = systemTime(); 1548 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1549 const nsecs_t inTransaction(mDebugInTransaction); 1550 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1551 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1552 1553 /* 1554 * Dump the visible layer list 1555 */ 1556 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1557 const size_t count = currentLayers.size(); 1558 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1559 result.append(buffer); 1560 for (size_t i=0 ; i<count ; i++) { 1561 const sp<LayerBase>& layer(currentLayers[i]); 1562 layer->dump(result, buffer, SIZE); 1563 } 1564 1565 /* 1566 * Dump the layers in the purgatory 1567 */ 1568 1569 const size_t purgatorySize = mLayerPurgatory.size(); 1570 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1571 result.append(buffer); 1572 for (size_t i=0 ; i<purgatorySize ; i++) { 1573 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1574 layer->shortDump(result, buffer, SIZE); 1575 } 1576 1577 /* 1578 * Dump SurfaceFlinger global state 1579 */ 1580 1581 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1582 result.append(buffer); 1583 1584 const GLExtensions& extensions(GLExtensions::getInstance()); 1585 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1586 extensions.getVendor(), 1587 extensions.getRenderer(), 1588 extensions.getVersion()); 1589 result.append(buffer); 1590 1591 snprintf(buffer, SIZE, "EGL : %s\n", 1592 eglQueryString(graphicPlane(0).getEGLDisplay(), 1593 EGL_VERSION_HW_ANDROID)); 1594 result.append(buffer); 1595 1596 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1597 result.append(buffer); 1598 1599 mWormholeRegion.dump(result, "WormholeRegion"); 1600 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1601 snprintf(buffer, SIZE, 1602 " orientation=%d, canDraw=%d\n", 1603 mCurrentState.orientation, hw.canDraw()); 1604 result.append(buffer); 1605 snprintf(buffer, SIZE, 1606 " last eglSwapBuffers() time: %f us\n" 1607 " last transaction time : %f us\n" 1608 " transaction-flags : %08x\n" 1609 " refresh-rate : %f fps\n" 1610 " x-dpi : %f\n" 1611 " y-dpi : %f\n" 1612 " density : %f\n", 1613 mLastSwapBufferTime/1000.0, 1614 mLastTransactionTime/1000.0, 1615 mTransactionFlags, 1616 hw.getRefreshRate(), 1617 hw.getDpiX(), 1618 hw.getDpiY(), 1619 hw.getDensity()); 1620 result.append(buffer); 1621 1622 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1623 inSwapBuffersDuration/1000.0); 1624 result.append(buffer); 1625 1626 snprintf(buffer, SIZE, " transaction time: %f us\n", 1627 inTransactionDuration/1000.0); 1628 result.append(buffer); 1629 1630 /* 1631 * VSYNC state 1632 */ 1633 mEventThread->dump(result, buffer, SIZE); 1634 1635 /* 1636 * Dump HWComposer state 1637 */ 1638 HWComposer& hwc(hw.getHwComposer()); 1639 snprintf(buffer, SIZE, "h/w composer state:\n"); 1640 result.append(buffer); 1641 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1642 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1643 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1644 result.append(buffer); 1645 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1646 1647 /* 1648 * Dump gralloc state 1649 */ 1650 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1651 alloc.dump(result); 1652 hw.dump(result); 1653 } 1654 1655 status_t SurfaceFlinger::onTransact( 1656 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1657 { 1658 switch (code) { 1659 case CREATE_CONNECTION: 1660 case SET_TRANSACTION_STATE: 1661 case SET_ORIENTATION: 1662 case BOOT_FINISHED: 1663 case TURN_ELECTRON_BEAM_OFF: 1664 case TURN_ELECTRON_BEAM_ON: 1665 { 1666 // codes that require permission check 1667 IPCThreadState* ipc = IPCThreadState::self(); 1668 const int pid = ipc->getCallingPid(); 1669 const int uid = ipc->getCallingUid(); 1670 if ((uid != AID_GRAPHICS) && 1671 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1672 ALOGE("Permission Denial: " 1673 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1674 return PERMISSION_DENIED; 1675 } 1676 break; 1677 } 1678 case CAPTURE_SCREEN: 1679 { 1680 // codes that require permission check 1681 IPCThreadState* ipc = IPCThreadState::self(); 1682 const int pid = ipc->getCallingPid(); 1683 const int uid = ipc->getCallingUid(); 1684 if ((uid != AID_GRAPHICS) && 1685 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1686 ALOGE("Permission Denial: " 1687 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1688 return PERMISSION_DENIED; 1689 } 1690 break; 1691 } 1692 } 1693 1694 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1695 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1696 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1697 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1698 IPCThreadState* ipc = IPCThreadState::self(); 1699 const int pid = ipc->getCallingPid(); 1700 const int uid = ipc->getCallingUid(); 1701 ALOGE("Permission Denial: " 1702 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1703 return PERMISSION_DENIED; 1704 } 1705 int n; 1706 switch (code) { 1707 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1708 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1709 return NO_ERROR; 1710 case 1002: // SHOW_UPDATES 1711 n = data.readInt32(); 1712 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1713 invalidateHwcGeometry(); 1714 repaintEverything(); 1715 return NO_ERROR; 1716 case 1004:{ // repaint everything 1717 repaintEverything(); 1718 return NO_ERROR; 1719 } 1720 case 1005:{ // force transaction 1721 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1722 return NO_ERROR; 1723 } 1724 case 1006:{ // send empty update 1725 signalRefresh(); 1726 return NO_ERROR; 1727 } 1728 case 1008: // toggle use of hw composer 1729 n = data.readInt32(); 1730 mDebugDisableHWC = n ? 1 : 0; 1731 invalidateHwcGeometry(); 1732 repaintEverything(); 1733 return NO_ERROR; 1734 case 1009: // toggle use of transform hint 1735 n = data.readInt32(); 1736 mDebugDisableTransformHint = n ? 1 : 0; 1737 invalidateHwcGeometry(); 1738 repaintEverything(); 1739 return NO_ERROR; 1740 case 1010: // interrogate. 1741 reply->writeInt32(0); 1742 reply->writeInt32(0); 1743 reply->writeInt32(mDebugRegion); 1744 reply->writeInt32(0); 1745 reply->writeInt32(mDebugDisableHWC); 1746 return NO_ERROR; 1747 case 1013: { 1748 Mutex::Autolock _l(mStateLock); 1749 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1750 reply->writeInt32(hw.getPageFlipCount()); 1751 } 1752 return NO_ERROR; 1753 } 1754 } 1755 return err; 1756 } 1757 1758 void SurfaceFlinger::repaintEverything() { 1759 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1760 const Rect bounds(hw.getBounds()); 1761 setInvalidateRegion(Region(bounds)); 1762 signalTransaction(); 1763 } 1764 1765 void SurfaceFlinger::setInvalidateRegion(const Region& reg) { 1766 Mutex::Autolock _l(mInvalidateLock); 1767 mInvalidateRegion = reg; 1768 } 1769 1770 Region SurfaceFlinger::getAndClearInvalidateRegion() { 1771 Mutex::Autolock _l(mInvalidateLock); 1772 Region reg(mInvalidateRegion); 1773 mInvalidateRegion.clear(); 1774 return reg; 1775 } 1776 1777 // --------------------------------------------------------------------------- 1778 1779 status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy, 1780 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1781 { 1782 Mutex::Autolock _l(mStateLock); 1783 return renderScreenToTextureLocked(dpy, textureName, uOut, vOut); 1784 } 1785 1786 status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1787 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1788 { 1789 ATRACE_CALL(); 1790 1791 if (!GLExtensions::getInstance().haveFramebufferObject()) 1792 return INVALID_OPERATION; 1793 1794 // get screen geometry 1795 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1796 const uint32_t hw_w = hw.getWidth(); 1797 const uint32_t hw_h = hw.getHeight(); 1798 GLfloat u = 1; 1799 GLfloat v = 1; 1800 1801 // make sure to clear all GL error flags 1802 while ( glGetError() != GL_NO_ERROR ) ; 1803 1804 // create a FBO 1805 GLuint name, tname; 1806 glGenTextures(1, &tname); 1807 glBindTexture(GL_TEXTURE_2D, tname); 1808 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 1809 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 1810 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1811 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1812 if (glGetError() != GL_NO_ERROR) { 1813 while ( glGetError() != GL_NO_ERROR ) ; 1814 GLint tw = (2 << (31 - clz(hw_w))); 1815 GLint th = (2 << (31 - clz(hw_h))); 1816 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1817 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1818 u = GLfloat(hw_w) / tw; 1819 v = GLfloat(hw_h) / th; 1820 } 1821 glGenFramebuffersOES(1, &name); 1822 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1823 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1824 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1825 1826 // redraw the screen entirely... 1827 glDisable(GL_TEXTURE_EXTERNAL_OES); 1828 glDisable(GL_TEXTURE_2D); 1829 glClearColor(0,0,0,1); 1830 glClear(GL_COLOR_BUFFER_BIT); 1831 glMatrixMode(GL_MODELVIEW); 1832 glLoadIdentity(); 1833 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1834 const size_t count = layers.size(); 1835 for (size_t i=0 ; i<count ; ++i) { 1836 const sp<LayerBase>& layer(layers[i]); 1837 layer->drawForSreenShot(); 1838 } 1839 1840 hw.compositionComplete(); 1841 1842 // back to main framebuffer 1843 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1844 glDeleteFramebuffersOES(1, &name); 1845 1846 *textureName = tname; 1847 *uOut = u; 1848 *vOut = v; 1849 return NO_ERROR; 1850 } 1851 1852 // --------------------------------------------------------------------------- 1853 1854 class VSyncWaiter { 1855 DisplayEventReceiver::Event buffer[4]; 1856 sp<Looper> looper; 1857 sp<IDisplayEventConnection> events; 1858 sp<BitTube> eventTube; 1859 public: 1860 VSyncWaiter(const sp<EventThread>& eventThread) { 1861 looper = new Looper(true); 1862 events = eventThread->createEventConnection(); 1863 eventTube = events->getDataChannel(); 1864 looper->addFd(eventTube->getFd(), 0, ALOOPER_EVENT_INPUT, 0, 0); 1865 events->requestNextVsync(); 1866 } 1867 1868 void wait() { 1869 ssize_t n; 1870 1871 looper->pollOnce(-1); 1872 // we don't handle any errors here, it doesn't matter 1873 // and we don't want to take the risk to get stuck. 1874 1875 // drain the events... 1876 while ((n = DisplayEventReceiver::getEvents( 1877 eventTube, buffer, 4)) > 0) ; 1878 1879 events->requestNextVsync(); 1880 } 1881 }; 1882 1883 status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1884 { 1885 // get screen geometry 1886 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1887 const uint32_t hw_w = hw.getWidth(); 1888 const uint32_t hw_h = hw.getHeight(); 1889 const Region screenBounds(hw.getBounds()); 1890 1891 GLfloat u, v; 1892 GLuint tname; 1893 status_t result = renderScreenToTextureLocked(0, &tname, &u, &v); 1894 if (result != NO_ERROR) { 1895 return result; 1896 } 1897 1898 GLfloat vtx[8]; 1899 const GLfloat texCoords[4][2] = { {0,0}, {0,v}, {u,v}, {u,0} }; 1900 glBindTexture(GL_TEXTURE_2D, tname); 1901 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1902 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1903 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1904 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 1905 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 1906 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1907 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1908 glVertexPointer(2, GL_FLOAT, 0, vtx); 1909 1910 /* 1911 * Texture coordinate mapping 1912 * 1913 * u 1914 * 1 +----------+---+ 1915 * | | | | image is inverted 1916 * | V | | w.r.t. the texture 1917 * 1-v +----------+ | coordinates 1918 * | | 1919 * | | 1920 * | | 1921 * 0 +--------------+ 1922 * 0 1 1923 * 1924 */ 1925 1926 class s_curve_interpolator { 1927 const float nbFrames, s, v; 1928 public: 1929 s_curve_interpolator(int nbFrames, float s) 1930 : nbFrames(1.0f / (nbFrames-1)), s(s), 1931 v(1.0f + expf(-s + 0.5f*s)) { 1932 } 1933 float operator()(int f) { 1934 const float x = f * nbFrames; 1935 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1936 } 1937 }; 1938 1939 class v_stretch { 1940 const GLfloat hw_w, hw_h; 1941 public: 1942 v_stretch(uint32_t hw_w, uint32_t hw_h) 1943 : hw_w(hw_w), hw_h(hw_h) { 1944 } 1945 void operator()(GLfloat* vtx, float v) { 1946 const GLfloat w = hw_w + (hw_w * v); 1947 const GLfloat h = hw_h - (hw_h * v); 1948 const GLfloat x = (hw_w - w) * 0.5f; 1949 const GLfloat y = (hw_h - h) * 0.5f; 1950 vtx[0] = x; vtx[1] = y; 1951 vtx[2] = x; vtx[3] = y + h; 1952 vtx[4] = x + w; vtx[5] = y + h; 1953 vtx[6] = x + w; vtx[7] = y; 1954 } 1955 }; 1956 1957 class h_stretch { 1958 const GLfloat hw_w, hw_h; 1959 public: 1960 h_stretch(uint32_t hw_w, uint32_t hw_h) 1961 : hw_w(hw_w), hw_h(hw_h) { 1962 } 1963 void operator()(GLfloat* vtx, float v) { 1964 const GLfloat w = hw_w - (hw_w * v); 1965 const GLfloat h = 1.0f; 1966 const GLfloat x = (hw_w - w) * 0.5f; 1967 const GLfloat y = (hw_h - h) * 0.5f; 1968 vtx[0] = x; vtx[1] = y; 1969 vtx[2] = x; vtx[3] = y + h; 1970 vtx[4] = x + w; vtx[5] = y + h; 1971 vtx[6] = x + w; vtx[7] = y; 1972 } 1973 }; 1974 1975 VSyncWaiter vsync(mEventThread); 1976 1977 // the full animation is 24 frames 1978 char value[PROPERTY_VALUE_MAX]; 1979 property_get("debug.sf.electron_frames", value, "24"); 1980 int nbFrames = (atoi(value) + 1) >> 1; 1981 if (nbFrames <= 0) // just in case 1982 nbFrames = 24; 1983 1984 s_curve_interpolator itr(nbFrames, 7.5f); 1985 s_curve_interpolator itg(nbFrames, 8.0f); 1986 s_curve_interpolator itb(nbFrames, 8.5f); 1987 1988 v_stretch vverts(hw_w, hw_h); 1989 1990 glMatrixMode(GL_TEXTURE); 1991 glLoadIdentity(); 1992 glMatrixMode(GL_MODELVIEW); 1993 glLoadIdentity(); 1994 1995 glEnable(GL_BLEND); 1996 glBlendFunc(GL_ONE, GL_ONE); 1997 for (int i=0 ; i<nbFrames ; i++) { 1998 float x, y, w, h; 1999 const float vr = itr(i); 2000 const float vg = itg(i); 2001 const float vb = itb(i); 2002 2003 // wait for vsync 2004 vsync.wait(); 2005 2006 // clear screen 2007 glColorMask(1,1,1,1); 2008 glClear(GL_COLOR_BUFFER_BIT); 2009 glEnable(GL_TEXTURE_2D); 2010 2011 // draw the red plane 2012 vverts(vtx, vr); 2013 glColorMask(1,0,0,1); 2014 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2015 2016 // draw the green plane 2017 vverts(vtx, vg); 2018 glColorMask(0,1,0,1); 2019 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2020 2021 // draw the blue plane 2022 vverts(vtx, vb); 2023 glColorMask(0,0,1,1); 2024 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2025 2026 // draw the white highlight (we use the last vertices) 2027 glDisable(GL_TEXTURE_2D); 2028 glColorMask(1,1,1,1); 2029 glColor4f(vg, vg, vg, 1); 2030 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2031 hw.flip(screenBounds); 2032 } 2033 2034 h_stretch hverts(hw_w, hw_h); 2035 glDisable(GL_BLEND); 2036 glDisable(GL_TEXTURE_2D); 2037 glColorMask(1,1,1,1); 2038 for (int i=0 ; i<nbFrames ; i++) { 2039 const float v = itg(i); 2040 hverts(vtx, v); 2041 2042 // wait for vsync 2043 vsync.wait(); 2044 2045 glClear(GL_COLOR_BUFFER_BIT); 2046 glColor4f(1-v, 1-v, 1-v, 1); 2047 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2048 hw.flip(screenBounds); 2049 } 2050 2051 glColorMask(1,1,1,1); 2052 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2053 glDeleteTextures(1, &tname); 2054 glDisable(GL_TEXTURE_2D); 2055 glDisable(GL_BLEND); 2056 return NO_ERROR; 2057 } 2058 2059 status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 2060 { 2061 status_t result = PERMISSION_DENIED; 2062 2063 if (!GLExtensions::getInstance().haveFramebufferObject()) 2064 return INVALID_OPERATION; 2065 2066 2067 // get screen geometry 2068 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2069 const uint32_t hw_w = hw.getWidth(); 2070 const uint32_t hw_h = hw.getHeight(); 2071 const Region screenBounds(hw.bounds()); 2072 2073 GLfloat u, v; 2074 GLuint tname; 2075 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2076 if (result != NO_ERROR) { 2077 return result; 2078 } 2079 2080 GLfloat vtx[8]; 2081 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2082 glBindTexture(GL_TEXTURE_2D, tname); 2083 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2084 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2085 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2086 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2087 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2088 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2089 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2090 glVertexPointer(2, GL_FLOAT, 0, vtx); 2091 2092 class s_curve_interpolator { 2093 const float nbFrames, s, v; 2094 public: 2095 s_curve_interpolator(int nbFrames, float s) 2096 : nbFrames(1.0f / (nbFrames-1)), s(s), 2097 v(1.0f + expf(-s + 0.5f*s)) { 2098 } 2099 float operator()(int f) { 2100 const float x = f * nbFrames; 2101 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2102 } 2103 }; 2104 2105 class v_stretch { 2106 const GLfloat hw_w, hw_h; 2107 public: 2108 v_stretch(uint32_t hw_w, uint32_t hw_h) 2109 : hw_w(hw_w), hw_h(hw_h) { 2110 } 2111 void operator()(GLfloat* vtx, float v) { 2112 const GLfloat w = hw_w + (hw_w * v); 2113 const GLfloat h = hw_h - (hw_h * v); 2114 const GLfloat x = (hw_w - w) * 0.5f; 2115 const GLfloat y = (hw_h - h) * 0.5f; 2116 vtx[0] = x; vtx[1] = y; 2117 vtx[2] = x; vtx[3] = y + h; 2118 vtx[4] = x + w; vtx[5] = y + h; 2119 vtx[6] = x + w; vtx[7] = y; 2120 } 2121 }; 2122 2123 class h_stretch { 2124 const GLfloat hw_w, hw_h; 2125 public: 2126 h_stretch(uint32_t hw_w, uint32_t hw_h) 2127 : hw_w(hw_w), hw_h(hw_h) { 2128 } 2129 void operator()(GLfloat* vtx, float v) { 2130 const GLfloat w = hw_w - (hw_w * v); 2131 const GLfloat h = 1.0f; 2132 const GLfloat x = (hw_w - w) * 0.5f; 2133 const GLfloat y = (hw_h - h) * 0.5f; 2134 vtx[0] = x; vtx[1] = y; 2135 vtx[2] = x; vtx[3] = y + h; 2136 vtx[4] = x + w; vtx[5] = y + h; 2137 vtx[6] = x + w; vtx[7] = y; 2138 } 2139 }; 2140 2141 VSyncWaiter vsync(mEventThread); 2142 2143 // the full animation is 12 frames 2144 int nbFrames = 8; 2145 s_curve_interpolator itr(nbFrames, 7.5f); 2146 s_curve_interpolator itg(nbFrames, 8.0f); 2147 s_curve_interpolator itb(nbFrames, 8.5f); 2148 2149 h_stretch hverts(hw_w, hw_h); 2150 glDisable(GL_BLEND); 2151 glDisable(GL_TEXTURE_2D); 2152 glColorMask(1,1,1,1); 2153 for (int i=nbFrames-1 ; i>=0 ; i--) { 2154 const float v = itg(i); 2155 hverts(vtx, v); 2156 2157 // wait for vsync 2158 vsync.wait(); 2159 2160 glClear(GL_COLOR_BUFFER_BIT); 2161 glColor4f(1-v, 1-v, 1-v, 1); 2162 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2163 hw.flip(screenBounds); 2164 } 2165 2166 nbFrames = 4; 2167 v_stretch vverts(hw_w, hw_h); 2168 glEnable(GL_BLEND); 2169 glBlendFunc(GL_ONE, GL_ONE); 2170 for (int i=nbFrames-1 ; i>=0 ; i--) { 2171 float x, y, w, h; 2172 const float vr = itr(i); 2173 const float vg = itg(i); 2174 const float vb = itb(i); 2175 2176 // wait for vsync 2177 vsync.wait(); 2178 2179 // clear screen 2180 glColorMask(1,1,1,1); 2181 glClear(GL_COLOR_BUFFER_BIT); 2182 glEnable(GL_TEXTURE_2D); 2183 2184 // draw the red plane 2185 vverts(vtx, vr); 2186 glColorMask(1,0,0,1); 2187 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2188 2189 // draw the green plane 2190 vverts(vtx, vg); 2191 glColorMask(0,1,0,1); 2192 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2193 2194 // draw the blue plane 2195 vverts(vtx, vb); 2196 glColorMask(0,0,1,1); 2197 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2198 2199 hw.flip(screenBounds); 2200 } 2201 2202 glColorMask(1,1,1,1); 2203 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2204 glDeleteTextures(1, &tname); 2205 glDisable(GL_TEXTURE_2D); 2206 glDisable(GL_BLEND); 2207 2208 return NO_ERROR; 2209 } 2210 2211 // --------------------------------------------------------------------------- 2212 2213 status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2214 { 2215 ATRACE_CALL(); 2216 2217 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2218 if (!hw.canDraw()) { 2219 // we're already off 2220 return NO_ERROR; 2221 } 2222 2223 // turn off hwc while we're doing the animation 2224 hw.getHwComposer().disable(); 2225 // and make sure to turn it back on (if needed) next time we compose 2226 invalidateHwcGeometry(); 2227 2228 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2229 electronBeamOffAnimationImplLocked(); 2230 } 2231 2232 // always clear the whole screen at the end of the animation 2233 glClearColor(0,0,0,1); 2234 glClear(GL_COLOR_BUFFER_BIT); 2235 hw.flip( Region(hw.bounds()) ); 2236 2237 return NO_ERROR; 2238 } 2239 2240 status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2241 { 2242 class MessageTurnElectronBeamOff : public MessageBase { 2243 SurfaceFlinger* flinger; 2244 int32_t mode; 2245 status_t result; 2246 public: 2247 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2248 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2249 } 2250 status_t getResult() const { 2251 return result; 2252 } 2253 virtual bool handler() { 2254 Mutex::Autolock _l(flinger->mStateLock); 2255 result = flinger->turnElectronBeamOffImplLocked(mode); 2256 return true; 2257 } 2258 }; 2259 2260 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2261 status_t res = postMessageSync(msg); 2262 if (res == NO_ERROR) { 2263 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2264 2265 // work-around: when the power-manager calls us we activate the 2266 // animation. eventually, the "on" animation will be called 2267 // by the power-manager itself 2268 mElectronBeamAnimationMode = mode; 2269 } 2270 return res; 2271 } 2272 2273 // --------------------------------------------------------------------------- 2274 2275 status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2276 { 2277 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2278 if (hw.canDraw()) { 2279 // we're already on 2280 return NO_ERROR; 2281 } 2282 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2283 electronBeamOnAnimationImplLocked(); 2284 } 2285 2286 // make sure to redraw the whole screen when the animation is done 2287 mDirtyRegion.set(hw.bounds()); 2288 signalTransaction(); 2289 2290 return NO_ERROR; 2291 } 2292 2293 status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2294 { 2295 class MessageTurnElectronBeamOn : public MessageBase { 2296 SurfaceFlinger* flinger; 2297 int32_t mode; 2298 status_t result; 2299 public: 2300 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2301 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2302 } 2303 status_t getResult() const { 2304 return result; 2305 } 2306 virtual bool handler() { 2307 Mutex::Autolock _l(flinger->mStateLock); 2308 result = flinger->turnElectronBeamOnImplLocked(mode); 2309 return true; 2310 } 2311 }; 2312 2313 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2314 return NO_ERROR; 2315 } 2316 2317 // --------------------------------------------------------------------------- 2318 2319 status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2320 sp<IMemoryHeap>* heap, 2321 uint32_t* w, uint32_t* h, PixelFormat* f, 2322 uint32_t sw, uint32_t sh, 2323 uint32_t minLayerZ, uint32_t maxLayerZ) 2324 { 2325 ATRACE_CALL(); 2326 2327 status_t result = PERMISSION_DENIED; 2328 2329 // only one display supported for now 2330 if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2331 return BAD_VALUE; 2332 2333 if (!GLExtensions::getInstance().haveFramebufferObject()) 2334 return INVALID_OPERATION; 2335 2336 // get screen geometry 2337 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2338 const uint32_t hw_w = hw.getWidth(); 2339 const uint32_t hw_h = hw.getHeight(); 2340 2341 if ((sw > hw_w) || (sh > hw_h)) 2342 return BAD_VALUE; 2343 2344 sw = (!sw) ? hw_w : sw; 2345 sh = (!sh) ? hw_h : sh; 2346 const size_t size = sw * sh * 4; 2347 2348 //ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2349 // sw, sh, minLayerZ, maxLayerZ); 2350 2351 // make sure to clear all GL error flags 2352 while ( glGetError() != GL_NO_ERROR ) ; 2353 2354 // create a FBO 2355 GLuint name, tname; 2356 glGenRenderbuffersOES(1, &tname); 2357 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2358 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2359 2360 glGenFramebuffersOES(1, &name); 2361 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2362 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2363 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2364 2365 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2366 2367 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2368 2369 // invert everything, b/c glReadPixel() below will invert the FB 2370 glViewport(0, 0, sw, sh); 2371 glMatrixMode(GL_PROJECTION); 2372 glPushMatrix(); 2373 glLoadIdentity(); 2374 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2375 glMatrixMode(GL_MODELVIEW); 2376 2377 // redraw the screen entirely... 2378 glClearColor(0,0,0,1); 2379 glClear(GL_COLOR_BUFFER_BIT); 2380 2381 const LayerVector& layers(mDrawingState.layersSortedByZ); 2382 const size_t count = layers.size(); 2383 for (size_t i=0 ; i<count ; ++i) { 2384 const sp<LayerBase>& layer(layers[i]); 2385 const uint32_t flags = layer->drawingState().flags; 2386 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2387 const uint32_t z = layer->drawingState().z; 2388 if (z >= minLayerZ && z <= maxLayerZ) { 2389 layer->drawForSreenShot(); 2390 } 2391 } 2392 } 2393 2394 // check for errors and return screen capture 2395 if (glGetError() != GL_NO_ERROR) { 2396 // error while rendering 2397 result = INVALID_OPERATION; 2398 } else { 2399 // allocate shared memory large enough to hold the 2400 // screen capture 2401 sp<MemoryHeapBase> base( 2402 new MemoryHeapBase(size, 0, "screen-capture") ); 2403 void* const ptr = base->getBase(); 2404 if (ptr) { 2405 // capture the screen with glReadPixels() 2406 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2407 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2408 if (glGetError() == GL_NO_ERROR) { 2409 *heap = base; 2410 *w = sw; 2411 *h = sh; 2412 *f = PIXEL_FORMAT_RGBA_8888; 2413 result = NO_ERROR; 2414 } 2415 } else { 2416 result = NO_MEMORY; 2417 } 2418 } 2419 glViewport(0, 0, hw_w, hw_h); 2420 glMatrixMode(GL_PROJECTION); 2421 glPopMatrix(); 2422 glMatrixMode(GL_MODELVIEW); 2423 } else { 2424 result = BAD_VALUE; 2425 } 2426 2427 // release FBO resources 2428 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2429 glDeleteRenderbuffersOES(1, &tname); 2430 glDeleteFramebuffersOES(1, &name); 2431 2432 hw.compositionComplete(); 2433 2434 // ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2435 2436 return result; 2437 } 2438 2439 2440 status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2441 sp<IMemoryHeap>* heap, 2442 uint32_t* width, uint32_t* height, PixelFormat* format, 2443 uint32_t sw, uint32_t sh, 2444 uint32_t minLayerZ, uint32_t maxLayerZ) 2445 { 2446 // only one display supported for now 2447 if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2448 return BAD_VALUE; 2449 2450 if (!GLExtensions::getInstance().haveFramebufferObject()) 2451 return INVALID_OPERATION; 2452 2453 class MessageCaptureScreen : public MessageBase { 2454 SurfaceFlinger* flinger; 2455 DisplayID dpy; 2456 sp<IMemoryHeap>* heap; 2457 uint32_t* w; 2458 uint32_t* h; 2459 PixelFormat* f; 2460 uint32_t sw; 2461 uint32_t sh; 2462 uint32_t minLayerZ; 2463 uint32_t maxLayerZ; 2464 status_t result; 2465 public: 2466 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2467 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2468 uint32_t sw, uint32_t sh, 2469 uint32_t minLayerZ, uint32_t maxLayerZ) 2470 : flinger(flinger), dpy(dpy), 2471 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2472 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2473 result(PERMISSION_DENIED) 2474 { 2475 } 2476 status_t getResult() const { 2477 return result; 2478 } 2479 virtual bool handler() { 2480 Mutex::Autolock _l(flinger->mStateLock); 2481 2482 // if we have secure windows, never allow the screen capture 2483 if (flinger->mSecureFrameBuffer) 2484 return true; 2485 2486 result = flinger->captureScreenImplLocked(dpy, 2487 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2488 2489 return true; 2490 } 2491 }; 2492 2493 sp<MessageBase> msg = new MessageCaptureScreen(this, 2494 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2495 status_t res = postMessageSync(msg); 2496 if (res == NO_ERROR) { 2497 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2498 } 2499 return res; 2500 } 2501 2502 // --------------------------------------------------------------------------- 2503 2504 sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2505 { 2506 sp<Layer> result; 2507 Mutex::Autolock _l(mStateLock); 2508 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2509 return result; 2510 } 2511 2512 // --------------------------------------------------------------------------- 2513 2514 Client::Client(const sp<SurfaceFlinger>& flinger) 2515 : mFlinger(flinger), mNameGenerator(1) 2516 { 2517 } 2518 2519 Client::~Client() 2520 { 2521 const size_t count = mLayers.size(); 2522 for (size_t i=0 ; i<count ; i++) { 2523 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2524 if (layer != 0) { 2525 mFlinger->removeLayer(layer); 2526 } 2527 } 2528 } 2529 2530 status_t Client::initCheck() const { 2531 return NO_ERROR; 2532 } 2533 2534 size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2535 { 2536 Mutex::Autolock _l(mLock); 2537 size_t name = mNameGenerator++; 2538 mLayers.add(name, layer); 2539 return name; 2540 } 2541 2542 void Client::detachLayer(const LayerBaseClient* layer) 2543 { 2544 Mutex::Autolock _l(mLock); 2545 // we do a linear search here, because this doesn't happen often 2546 const size_t count = mLayers.size(); 2547 for (size_t i=0 ; i<count ; i++) { 2548 if (mLayers.valueAt(i) == layer) { 2549 mLayers.removeItemsAt(i, 1); 2550 break; 2551 } 2552 } 2553 } 2554 sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2555 { 2556 Mutex::Autolock _l(mLock); 2557 sp<LayerBaseClient> lbc; 2558 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2559 if (layer != 0) { 2560 lbc = layer.promote(); 2561 ALOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2562 } 2563 return lbc; 2564 } 2565 2566 2567 status_t Client::onTransact( 2568 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2569 { 2570 // these must be checked 2571 IPCThreadState* ipc = IPCThreadState::self(); 2572 const int pid = ipc->getCallingPid(); 2573 const int uid = ipc->getCallingUid(); 2574 const int self_pid = getpid(); 2575 if (CC_UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2576 // we're called from a different process, do the real check 2577 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2578 { 2579 ALOGE("Permission Denial: " 2580 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2581 return PERMISSION_DENIED; 2582 } 2583 } 2584 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2585 } 2586 2587 2588 sp<ISurface> Client::createSurface( 2589 ISurfaceComposerClient::surface_data_t* params, 2590 const String8& name, 2591 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2592 uint32_t flags) 2593 { 2594 /* 2595 * createSurface must be called from the GL thread so that it can 2596 * have access to the GL context. 2597 */ 2598 2599 class MessageCreateSurface : public MessageBase { 2600 sp<ISurface> result; 2601 SurfaceFlinger* flinger; 2602 ISurfaceComposerClient::surface_data_t* params; 2603 Client* client; 2604 const String8& name; 2605 DisplayID display; 2606 uint32_t w, h; 2607 PixelFormat format; 2608 uint32_t flags; 2609 public: 2610 MessageCreateSurface(SurfaceFlinger* flinger, 2611 ISurfaceComposerClient::surface_data_t* params, 2612 const String8& name, Client* client, 2613 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2614 uint32_t flags) 2615 : flinger(flinger), params(params), client(client), name(name), 2616 display(display), w(w), h(h), format(format), flags(flags) 2617 { 2618 } 2619 sp<ISurface> getResult() const { return result; } 2620 virtual bool handler() { 2621 result = flinger->createSurface(params, name, client, 2622 display, w, h, format, flags); 2623 return true; 2624 } 2625 }; 2626 2627 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2628 params, name, this, display, w, h, format, flags); 2629 mFlinger->postMessageSync(msg); 2630 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2631 } 2632 status_t Client::destroySurface(SurfaceID sid) { 2633 return mFlinger->removeSurface(this, sid); 2634 } 2635 2636 // --------------------------------------------------------------------------- 2637 2638 GraphicBufferAlloc::GraphicBufferAlloc() {} 2639 2640 GraphicBufferAlloc::~GraphicBufferAlloc() {} 2641 2642 sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2643 PixelFormat format, uint32_t usage, status_t* error) { 2644 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2645 status_t err = graphicBuffer->initCheck(); 2646 *error = err; 2647 if (err != 0 || graphicBuffer->handle == 0) { 2648 if (err == NO_MEMORY) { 2649 GraphicBuffer::dumpAllocationsToSystemLog(); 2650 } 2651 ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2652 "failed (%s), handle=%p", 2653 w, h, strerror(-err), graphicBuffer->handle); 2654 return 0; 2655 } 2656 return graphicBuffer; 2657 } 2658 2659 // --------------------------------------------------------------------------- 2660 2661 GraphicPlane::GraphicPlane() 2662 : mHw(0) 2663 { 2664 } 2665 2666 GraphicPlane::~GraphicPlane() { 2667 delete mHw; 2668 } 2669 2670 bool GraphicPlane::initialized() const { 2671 return mHw ? true : false; 2672 } 2673 2674 int GraphicPlane::getWidth() const { 2675 return mWidth; 2676 } 2677 2678 int GraphicPlane::getHeight() const { 2679 return mHeight; 2680 } 2681 2682 void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2683 { 2684 mHw = hw; 2685 2686 // initialize the display orientation transform. 2687 // it's a constant that should come from the display driver. 2688 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2689 char property[PROPERTY_VALUE_MAX]; 2690 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2691 //displayOrientation 2692 switch (atoi(property)) { 2693 case 90: 2694 displayOrientation = ISurfaceComposer::eOrientation90; 2695 break; 2696 case 270: 2697 displayOrientation = ISurfaceComposer::eOrientation270; 2698 break; 2699 } 2700 } 2701 2702 const float w = hw->getWidth(); 2703 const float h = hw->getHeight(); 2704 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2705 &mDisplayTransform); 2706 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2707 mDisplayWidth = h; 2708 mDisplayHeight = w; 2709 } else { 2710 mDisplayWidth = w; 2711 mDisplayHeight = h; 2712 } 2713 2714 setOrientation(ISurfaceComposer::eOrientationDefault); 2715 } 2716 2717 status_t GraphicPlane::orientationToTransfrom( 2718 int orientation, int w, int h, Transform* tr) 2719 { 2720 uint32_t flags = 0; 2721 switch (orientation) { 2722 case ISurfaceComposer::eOrientationDefault: 2723 flags = Transform::ROT_0; 2724 break; 2725 case ISurfaceComposer::eOrientation90: 2726 flags = Transform::ROT_90; 2727 break; 2728 case ISurfaceComposer::eOrientation180: 2729 flags = Transform::ROT_180; 2730 break; 2731 case ISurfaceComposer::eOrientation270: 2732 flags = Transform::ROT_270; 2733 break; 2734 default: 2735 return BAD_VALUE; 2736 } 2737 tr->set(flags, w, h); 2738 return NO_ERROR; 2739 } 2740 2741 status_t GraphicPlane::setOrientation(int orientation) 2742 { 2743 // If the rotation can be handled in hardware, this is where 2744 // the magic should happen. 2745 2746 const DisplayHardware& hw(displayHardware()); 2747 const float w = mDisplayWidth; 2748 const float h = mDisplayHeight; 2749 mWidth = int(w); 2750 mHeight = int(h); 2751 2752 Transform orientationTransform; 2753 GraphicPlane::orientationToTransfrom(orientation, w, h, 2754 &orientationTransform); 2755 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2756 mWidth = int(h); 2757 mHeight = int(w); 2758 } 2759 2760 mOrientation = orientation; 2761 mGlobalTransform = mDisplayTransform * orientationTransform; 2762 return NO_ERROR; 2763 } 2764 2765 const DisplayHardware& GraphicPlane::displayHardware() const { 2766 return *mHw; 2767 } 2768 2769 DisplayHardware& GraphicPlane::editDisplayHardware() { 2770 return *mHw; 2771 } 2772 2773 const Transform& GraphicPlane::transform() const { 2774 return mGlobalTransform; 2775 } 2776 2777 EGLDisplay GraphicPlane::getEGLDisplay() const { 2778 return mHw->getEGLDisplay(); 2779 } 2780 2781 // --------------------------------------------------------------------------- 2782 2783 }; // namespace android 2784
