SurfaceFlinger.cpp revision a5529c8778c2f407f482fc12165aeb76c0f505c2
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 "LayerDim.h" 52#include "SurfaceFlinger.h" 53 54#include "DisplayHardware/DisplayHardware.h" 55#include "DisplayHardware/HWComposer.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#define DISPLAY_COUNT 1 65 66namespace android { 67// --------------------------------------------------------------------------- 68 69SurfaceFlinger::SurfaceFlinger() 70 : BnSurfaceComposer(), Thread(false), 71 mTransactionFlags(0), 72 mTransactionCount(0), 73 mResizeTransationPending(false), 74 mLayersRemoved(false), 75 mBootTime(systemTime()), 76 mHardwareTest("android.permission.HARDWARE_TEST"), 77 mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"), 78 mReadFramebuffer("android.permission.READ_FRAME_BUFFER"), 79 mDump("android.permission.DUMP"), 80 mVisibleRegionsDirty(false), 81 mHwWorkListDirty(false), 82 mDeferReleaseConsole(false), 83 mFreezeDisplay(false), 84 mElectronBeamAnimationMode(0), 85 mFreezeCount(0), 86 mFreezeDisplayTime(0), 87 mDebugRegion(0), 88 mDebugBackground(0), 89 mDebugDisableHWC(0), 90 mDebugInSwapBuffers(0), 91 mLastSwapBufferTime(0), 92 mDebugInTransaction(0), 93 mLastTransactionTime(0), 94 mBootFinished(false), 95 mConsoleSignals(0), 96 mSecureFrameBuffer(0) 97{ 98 init(); 99} 100 101void SurfaceFlinger::init() 102{ 103 LOGI("SurfaceFlinger is starting"); 104 105 // debugging stuff... 106 char value[PROPERTY_VALUE_MAX]; 107 property_get("debug.sf.showupdates", value, "0"); 108 mDebugRegion = atoi(value); 109 property_get("debug.sf.showbackground", value, "0"); 110 mDebugBackground = atoi(value); 111 112 LOGI_IF(mDebugRegion, "showupdates enabled"); 113 LOGI_IF(mDebugBackground, "showbackground enabled"); 114} 115 116SurfaceFlinger::~SurfaceFlinger() 117{ 118 glDeleteTextures(1, &mWormholeTexName); 119} 120 121sp<IMemoryHeap> SurfaceFlinger::getCblk() const 122{ 123 return mServerHeap; 124} 125 126sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 127{ 128 sp<ISurfaceComposerClient> bclient; 129 sp<Client> client(new Client(this)); 130 status_t err = client->initCheck(); 131 if (err == NO_ERROR) { 132 bclient = client; 133 } 134 return bclient; 135} 136 137sp<ISurfaceComposerClient> SurfaceFlinger::createClientConnection() 138{ 139 sp<ISurfaceComposerClient> bclient; 140 sp<UserClient> client(new UserClient(this)); 141 status_t err = client->initCheck(); 142 if (err == NO_ERROR) { 143 bclient = client; 144 } 145 return bclient; 146} 147 148 149const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 150{ 151 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 152 const GraphicPlane& plane(mGraphicPlanes[dpy]); 153 return plane; 154} 155 156GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 157{ 158 return const_cast<GraphicPlane&>( 159 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 160} 161 162void SurfaceFlinger::bootFinished() 163{ 164 const nsecs_t now = systemTime(); 165 const nsecs_t duration = now - mBootTime; 166 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 167 mBootFinished = true; 168 property_set("ctl.stop", "bootanim"); 169} 170 171void SurfaceFlinger::onFirstRef() 172{ 173 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 174 175 // Wait for the main thread to be done with its initialization 176 mReadyToRunBarrier.wait(); 177} 178 179static inline uint16_t pack565(int r, int g, int b) { 180 return (r<<11)|(g<<5)|b; 181} 182 183status_t SurfaceFlinger::readyToRun() 184{ 185 LOGI( "SurfaceFlinger's main thread ready to run. " 186 "Initializing graphics H/W..."); 187 188 // we only support one display currently 189 int dpy = 0; 190 191 { 192 // initialize the main display 193 GraphicPlane& plane(graphicPlane(dpy)); 194 DisplayHardware* const hw = new DisplayHardware(this, dpy); 195 plane.setDisplayHardware(hw); 196 } 197 198 // create the shared control-block 199 mServerHeap = new MemoryHeapBase(4096, 200 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 201 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 202 203 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 204 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 205 206 new(mServerCblk) surface_flinger_cblk_t; 207 208 // initialize primary screen 209 // (other display should be initialized in the same manner, but 210 // asynchronously, as they could come and go. None of this is supported 211 // yet). 212 const GraphicPlane& plane(graphicPlane(dpy)); 213 const DisplayHardware& hw = plane.displayHardware(); 214 const uint32_t w = hw.getWidth(); 215 const uint32_t h = hw.getHeight(); 216 const uint32_t f = hw.getFormat(); 217 hw.makeCurrent(); 218 219 // initialize the shared control block 220 mServerCblk->connected |= 1<<dpy; 221 display_cblk_t* dcblk = mServerCblk->displays + dpy; 222 memset(dcblk, 0, sizeof(display_cblk_t)); 223 dcblk->w = plane.getWidth(); 224 dcblk->h = plane.getHeight(); 225 dcblk->format = f; 226 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 227 dcblk->xdpi = hw.getDpiX(); 228 dcblk->ydpi = hw.getDpiY(); 229 dcblk->fps = hw.getRefreshRate(); 230 dcblk->density = hw.getDensity(); 231 232 // Initialize OpenGL|ES 233 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 234 glPixelStorei(GL_PACK_ALIGNMENT, 4); 235 glEnableClientState(GL_VERTEX_ARRAY); 236 glEnable(GL_SCISSOR_TEST); 237 glShadeModel(GL_FLAT); 238 glDisable(GL_DITHER); 239 glDisable(GL_CULL_FACE); 240 241 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 242 const uint16_t g1 = pack565(0x17,0x2f,0x17); 243 const uint16_t textureData[4] = { g0, g1, g1, g0 }; 244 glGenTextures(1, &mWormholeTexName); 245 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 246 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 247 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 248 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 249 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 250 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 251 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, textureData); 252 253 glViewport(0, 0, w, h); 254 glMatrixMode(GL_PROJECTION); 255 glLoadIdentity(); 256 glOrthof(0, w, h, 0, 0, 1); 257 258 LayerDim::initDimmer(this, w, h); 259 260 mReadyToRunBarrier.open(); 261 262 /* 263 * We're now ready to accept clients... 264 */ 265 266 // start boot animation 267 property_set("ctl.start", "bootanim"); 268 269 return NO_ERROR; 270} 271 272// ---------------------------------------------------------------------------- 273#if 0 274#pragma mark - 275#pragma mark Events Handler 276#endif 277 278void SurfaceFlinger::waitForEvent() 279{ 280 while (true) { 281 nsecs_t timeout = -1; 282 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 283 if (UNLIKELY(isFrozen())) { 284 // wait 5 seconds 285 const nsecs_t now = systemTime(); 286 if (mFreezeDisplayTime == 0) { 287 mFreezeDisplayTime = now; 288 } 289 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 290 timeout = waitTime>0 ? waitTime : 0; 291 } 292 293 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 294 295 // see if we timed out 296 if (isFrozen()) { 297 const nsecs_t now = systemTime(); 298 nsecs_t frozenTime = (now - mFreezeDisplayTime); 299 if (frozenTime >= freezeDisplayTimeout) { 300 // we timed out and are still frozen 301 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 302 mFreezeDisplay, mFreezeCount); 303 mFreezeDisplayTime = 0; 304 mFreezeCount = 0; 305 mFreezeDisplay = false; 306 } 307 } 308 309 if (msg != 0) { 310 switch (msg->what) { 311 case MessageQueue::INVALIDATE: 312 // invalidate message, just return to the main loop 313 return; 314 } 315 } 316 } 317} 318 319void SurfaceFlinger::signalEvent() { 320 mEventQueue.invalidate(); 321} 322 323void SurfaceFlinger::signal() const { 324 // this is the IPC call 325 const_cast<SurfaceFlinger*>(this)->signalEvent(); 326} 327 328status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 329 nsecs_t reltime, uint32_t flags) 330{ 331 return mEventQueue.postMessage(msg, reltime, flags); 332} 333 334status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 335 nsecs_t reltime, uint32_t flags) 336{ 337 status_t res = mEventQueue.postMessage(msg, reltime, flags); 338 if (res == NO_ERROR) { 339 msg->wait(); 340 } 341 return res; 342} 343 344// ---------------------------------------------------------------------------- 345#if 0 346#pragma mark - 347#pragma mark Main loop 348#endif 349 350bool SurfaceFlinger::threadLoop() 351{ 352 waitForEvent(); 353 354 // check for transactions 355 if (UNLIKELY(mConsoleSignals)) { 356 handleConsoleEvents(); 357 } 358 359 if (LIKELY(mTransactionCount == 0)) { 360 // if we're in a global transaction, don't do anything. 361 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 362 uint32_t transactionFlags = getTransactionFlags(mask); 363 if (LIKELY(transactionFlags)) { 364 handleTransaction(transactionFlags); 365 } 366 } 367 368 // post surfaces (if needed) 369 handlePageFlip(); 370 371 if (UNLIKELY(mHwWorkListDirty)) { 372 // build the h/w work list 373 handleWorkList(); 374 } 375 376 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 377 if (LIKELY(hw.canDraw() && !isFrozen())) { 378 // repaint the framebuffer (if needed) 379 380 const int index = hw.getCurrentBufferIndex(); 381 GraphicLog& logger(GraphicLog::getInstance()); 382 383 logger.log(GraphicLog::SF_REPAINT, index); 384 handleRepaint(); 385 386 // inform the h/w that we're done compositing 387 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 388 hw.compositionComplete(); 389 390 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 391 postFramebuffer(); 392 393 logger.log(GraphicLog::SF_UNLOCK_CLIENTS, index); 394 unlockClients(); 395 396 logger.log(GraphicLog::SF_REPAINT_DONE, index); 397 } else { 398 // pretend we did the post 399 unlockClients(); 400 usleep(16667); // 60 fps period 401 } 402 return true; 403} 404 405void SurfaceFlinger::postFramebuffer() 406{ 407 if (!mInvalidRegion.isEmpty()) { 408 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 409 const nsecs_t now = systemTime(); 410 mDebugInSwapBuffers = now; 411 hw.flip(mInvalidRegion); 412 mLastSwapBufferTime = systemTime() - now; 413 mDebugInSwapBuffers = 0; 414 mInvalidRegion.clear(); 415 } 416} 417 418void SurfaceFlinger::handleConsoleEvents() 419{ 420 // something to do with the console 421 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 422 423 int what = android_atomic_and(0, &mConsoleSignals); 424 if (what & eConsoleAcquired) { 425 hw.acquireScreen(); 426 // this is a temporary work-around, eventually this should be called 427 // by the power-manager 428 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 429 } 430 431 if (mDeferReleaseConsole && hw.isScreenAcquired()) { 432 // We got the release signal before the acquire signal 433 mDeferReleaseConsole = false; 434 hw.releaseScreen(); 435 } 436 437 if (what & eConsoleReleased) { 438 if (hw.isScreenAcquired()) { 439 hw.releaseScreen(); 440 } else { 441 mDeferReleaseConsole = true; 442 } 443 } 444 445 mDirtyRegion.set(hw.bounds()); 446} 447 448void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 449{ 450 Vector< sp<LayerBase> > ditchedLayers; 451 452 /* 453 * Perform and commit the transaction 454 */ 455 456 { // scope for the lock 457 Mutex::Autolock _l(mStateLock); 458 const nsecs_t now = systemTime(); 459 mDebugInTransaction = now; 460 handleTransactionLocked(transactionFlags, ditchedLayers); 461 mLastTransactionTime = systemTime() - now; 462 mDebugInTransaction = 0; 463 mHwWorkListDirty = true; 464 // here the transaction has been committed 465 } 466 467 /* 468 * Clean-up all layers that went away 469 * (do this without the lock held) 470 */ 471 472 const size_t count = ditchedLayers.size(); 473 for (size_t i=0 ; i<count ; i++) { 474 if (ditchedLayers[i] != 0) { 475 //LOGD("ditching layer %p", ditchedLayers[i].get()); 476 ditchedLayers[i]->ditch(); 477 } 478 } 479} 480 481void SurfaceFlinger::handleTransactionLocked( 482 uint32_t transactionFlags, Vector< sp<LayerBase> >& ditchedLayers) 483{ 484 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 485 const size_t count = currentLayers.size(); 486 487 /* 488 * Traversal of the children 489 * (perform the transaction for each of them if needed) 490 */ 491 492 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 493 if (layersNeedTransaction) { 494 for (size_t i=0 ; i<count ; i++) { 495 const sp<LayerBase>& layer = currentLayers[i]; 496 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 497 if (!trFlags) continue; 498 499 const uint32_t flags = layer->doTransaction(0); 500 if (flags & Layer::eVisibleRegion) 501 mVisibleRegionsDirty = true; 502 } 503 } 504 505 /* 506 * Perform our own transaction if needed 507 */ 508 509 if (transactionFlags & eTransactionNeeded) { 510 if (mCurrentState.orientation != mDrawingState.orientation) { 511 // the orientation has changed, recompute all visible regions 512 // and invalidate everything. 513 514 const int dpy = 0; 515 const int orientation = mCurrentState.orientation; 516 const uint32_t type = mCurrentState.orientationType; 517 GraphicPlane& plane(graphicPlane(dpy)); 518 plane.setOrientation(orientation); 519 520 // update the shared control block 521 const DisplayHardware& hw(plane.displayHardware()); 522 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 523 dcblk->orientation = orientation; 524 dcblk->w = plane.getWidth(); 525 dcblk->h = plane.getHeight(); 526 527 mVisibleRegionsDirty = true; 528 mDirtyRegion.set(hw.bounds()); 529 } 530 531 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 532 // freezing or unfreezing the display -> trigger animation if needed 533 mFreezeDisplay = mCurrentState.freezeDisplay; 534 if (mFreezeDisplay) 535 mFreezeDisplayTime = 0; 536 } 537 538 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 539 // layers have been added 540 mVisibleRegionsDirty = true; 541 } 542 543 // some layers might have been removed, so 544 // we need to update the regions they're exposing. 545 if (mLayersRemoved) { 546 mLayersRemoved = false; 547 mVisibleRegionsDirty = true; 548 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 549 const size_t count = previousLayers.size(); 550 for (size_t i=0 ; i<count ; i++) { 551 const sp<LayerBase>& layer(previousLayers[i]); 552 if (currentLayers.indexOf( layer ) < 0) { 553 // this layer is not visible anymore 554 ditchedLayers.add(layer); 555 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 556 } 557 } 558 } 559 } 560 561 commitTransaction(); 562} 563 564sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 565{ 566 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 567} 568 569void SurfaceFlinger::computeVisibleRegions( 570 LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 571{ 572 const GraphicPlane& plane(graphicPlane(0)); 573 const Transform& planeTransform(plane.transform()); 574 const DisplayHardware& hw(plane.displayHardware()); 575 const Region screenRegion(hw.bounds()); 576 577 Region aboveOpaqueLayers; 578 Region aboveCoveredLayers; 579 Region dirty; 580 581 bool secureFrameBuffer = false; 582 583 size_t i = currentLayers.size(); 584 while (i--) { 585 const sp<LayerBase>& layer = currentLayers[i]; 586 layer->validateVisibility(planeTransform); 587 588 // start with the whole surface at its current location 589 const Layer::State& s(layer->drawingState()); 590 591 /* 592 * opaqueRegion: area of a surface that is fully opaque. 593 */ 594 Region opaqueRegion; 595 596 /* 597 * visibleRegion: area of a surface that is visible on screen 598 * and not fully transparent. This is essentially the layer's 599 * footprint minus the opaque regions above it. 600 * Areas covered by a translucent surface are considered visible. 601 */ 602 Region visibleRegion; 603 604 /* 605 * coveredRegion: area of a surface that is covered by all 606 * visible regions above it (which includes the translucent areas). 607 */ 608 Region coveredRegion; 609 610 611 // handle hidden surfaces by setting the visible region to empty 612 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 613 const bool translucent = layer->needsBlending(); 614 const Rect bounds(layer->visibleBounds()); 615 visibleRegion.set(bounds); 616 visibleRegion.andSelf(screenRegion); 617 if (!visibleRegion.isEmpty()) { 618 // Remove the transparent area from the visible region 619 if (translucent) { 620 visibleRegion.subtractSelf(layer->transparentRegionScreen); 621 } 622 623 // compute the opaque region 624 const int32_t layerOrientation = layer->getOrientation(); 625 if (s.alpha==255 && !translucent && 626 ((layerOrientation & Transform::ROT_INVALID) == false)) { 627 // the opaque region is the layer's footprint 628 opaqueRegion = visibleRegion; 629 } 630 } 631 } 632 633 // Clip the covered region to the visible region 634 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 635 636 // Update aboveCoveredLayers for next (lower) layer 637 aboveCoveredLayers.orSelf(visibleRegion); 638 639 // subtract the opaque region covered by the layers above us 640 visibleRegion.subtractSelf(aboveOpaqueLayers); 641 642 // compute this layer's dirty region 643 if (layer->contentDirty) { 644 // we need to invalidate the whole region 645 dirty = visibleRegion; 646 // as well, as the old visible region 647 dirty.orSelf(layer->visibleRegionScreen); 648 layer->contentDirty = false; 649 } else { 650 /* compute the exposed region: 651 * the exposed region consists of two components: 652 * 1) what's VISIBLE now and was COVERED before 653 * 2) what's EXPOSED now less what was EXPOSED before 654 * 655 * note that (1) is conservative, we start with the whole 656 * visible region but only keep what used to be covered by 657 * something -- which mean it may have been exposed. 658 * 659 * (2) handles areas that were not covered by anything but got 660 * exposed because of a resize. 661 */ 662 const Region newExposed = visibleRegion - coveredRegion; 663 const Region oldVisibleRegion = layer->visibleRegionScreen; 664 const Region oldCoveredRegion = layer->coveredRegionScreen; 665 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 666 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 667 } 668 dirty.subtractSelf(aboveOpaqueLayers); 669 670 // accumulate to the screen dirty region 671 dirtyRegion.orSelf(dirty); 672 673 // Update aboveOpaqueLayers for next (lower) layer 674 aboveOpaqueLayers.orSelf(opaqueRegion); 675 676 // Store the visible region is screen space 677 layer->setVisibleRegion(visibleRegion); 678 layer->setCoveredRegion(coveredRegion); 679 680 // If a secure layer is partially visible, lock-down the screen! 681 if (layer->isSecure() && !visibleRegion.isEmpty()) { 682 secureFrameBuffer = true; 683 } 684 } 685 686 // invalidate the areas where a layer was removed 687 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 688 mDirtyRegionRemovedLayer.clear(); 689 690 mSecureFrameBuffer = secureFrameBuffer; 691 opaqueRegion = aboveOpaqueLayers; 692} 693 694 695void SurfaceFlinger::commitTransaction() 696{ 697 mDrawingState = mCurrentState; 698 mResizeTransationPending = false; 699 mTransactionCV.broadcast(); 700} 701 702void SurfaceFlinger::handlePageFlip() 703{ 704 bool visibleRegions = mVisibleRegionsDirty; 705 LayerVector& currentLayers( 706 const_cast<LayerVector&>(mDrawingState.layersSortedByZ)); 707 visibleRegions |= lockPageFlip(currentLayers); 708 709 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 710 const Region screenRegion(hw.bounds()); 711 if (visibleRegions) { 712 Region opaqueRegion; 713 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 714 715 /* 716 * rebuild the visible layer list 717 */ 718 mVisibleLayersSortedByZ.clear(); 719 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 720 size_t count = currentLayers.size(); 721 mVisibleLayersSortedByZ.setCapacity(count); 722 for (size_t i=0 ; i<count ; i++) { 723 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 724 mVisibleLayersSortedByZ.add(currentLayers[i]); 725 } 726 727 mWormholeRegion = screenRegion.subtract(opaqueRegion); 728 mVisibleRegionsDirty = false; 729 mHwWorkListDirty = true; 730 } 731 732 unlockPageFlip(currentLayers); 733 mDirtyRegion.andSelf(screenRegion); 734} 735 736bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 737{ 738 bool recomputeVisibleRegions = false; 739 size_t count = currentLayers.size(); 740 sp<LayerBase> const* layers = currentLayers.array(); 741 for (size_t i=0 ; i<count ; i++) { 742 const sp<LayerBase>& layer(layers[i]); 743 layer->lockPageFlip(recomputeVisibleRegions); 744 } 745 return recomputeVisibleRegions; 746} 747 748void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 749{ 750 const GraphicPlane& plane(graphicPlane(0)); 751 const Transform& planeTransform(plane.transform()); 752 size_t count = currentLayers.size(); 753 sp<LayerBase> const* layers = currentLayers.array(); 754 for (size_t i=0 ; i<count ; i++) { 755 const sp<LayerBase>& layer(layers[i]); 756 layer->unlockPageFlip(planeTransform, mDirtyRegion); 757 } 758} 759 760void SurfaceFlinger::handleWorkList() 761{ 762 mHwWorkListDirty = false; 763 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 764 if (hwc.initCheck() == NO_ERROR) { 765 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 766 const size_t count = currentLayers.size(); 767 hwc.createWorkList(count); 768 hwc_layer_t* const cur(hwc.getLayers()); 769 for (size_t i=0 ; cur && i<count ; i++) { 770 currentLayers[i]->setGeometry(&cur[i]); 771 if (mDebugDisableHWC) { 772 cur[i].compositionType = HWC_FRAMEBUFFER; 773 cur[i].flags |= HWC_SKIP_LAYER; 774 } 775 } 776 } 777} 778 779void SurfaceFlinger::handleRepaint() 780{ 781 // compute the invalid region 782 mInvalidRegion.orSelf(mDirtyRegion); 783 784 if (UNLIKELY(mDebugRegion)) { 785 debugFlashRegions(); 786 } 787 788 // set the frame buffer 789 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 790 glMatrixMode(GL_MODELVIEW); 791 glLoadIdentity(); 792 793 uint32_t flags = hw.getFlags(); 794 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 795 (flags & DisplayHardware::BUFFER_PRESERVED)) 796 { 797 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 798 // takes a rectangle, we must make sure to update that whole 799 // rectangle in that case 800 if (flags & DisplayHardware::SWAP_RECTANGLE) { 801 // TODO: we really should be able to pass a region to 802 // SWAP_RECTANGLE so that we don't have to redraw all this. 803 mDirtyRegion.set(mInvalidRegion.bounds()); 804 } else { 805 // in the BUFFER_PRESERVED case, obviously, we can update only 806 // what's needed and nothing more. 807 // NOTE: this is NOT a common case, as preserving the backbuffer 808 // is costly and usually involves copying the whole update back. 809 } 810 } else { 811 if (flags & DisplayHardware::PARTIAL_UPDATES) { 812 // We need to redraw the rectangle that will be updated 813 // (pushed to the framebuffer). 814 // This is needed because PARTIAL_UPDATES only takes one 815 // rectangle instead of a region (see DisplayHardware::flip()) 816 mDirtyRegion.set(mInvalidRegion.bounds()); 817 } else { 818 // we need to redraw everything (the whole screen) 819 mDirtyRegion.set(hw.bounds()); 820 mInvalidRegion = mDirtyRegion; 821 } 822 } 823 824 // compose all surfaces 825 composeSurfaces(mDirtyRegion); 826 827 // clear the dirty regions 828 mDirtyRegion.clear(); 829} 830 831void SurfaceFlinger::composeSurfaces(const Region& dirty) 832{ 833 if (UNLIKELY(!mWormholeRegion.isEmpty())) { 834 // should never happen unless the window manager has a bug 835 // draw something... 836 drawWormhole(); 837 } 838 839 status_t err = NO_ERROR; 840 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 841 size_t count = layers.size(); 842 843 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 844 HWComposer& hwc(hw.getHwComposer()); 845 hwc_layer_t* const cur(hwc.getLayers()); 846 847 LOGE_IF(cur && hwc.getNumLayers() != count, 848 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 849 hwc.getNumLayers(), count); 850 851 // just to be extra-safe, use the smallest count 852 if (hwc.initCheck() == NO_ERROR) { 853 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 854 } 855 856 /* 857 * update the per-frame h/w composer data for each layer 858 * and build the transparent region of the FB 859 */ 860 Region transparent; 861 if (cur) { 862 for (size_t i=0 ; i<count ; i++) { 863 const sp<LayerBase>& layer(layers[i]); 864 layer->setPerFrameData(&cur[i]); 865 if (cur[i].hints & HWC_HINT_CLEAR_FB) { 866 if (!(layer->needsBlending())) { 867 transparent.orSelf(layer->visibleRegionScreen); 868 } 869 } 870 } 871 err = hwc.prepare(); 872 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 873 } 874 875 /* 876 * clear the area of the FB that need to be transparent 877 */ 878 transparent.andSelf(dirty); 879 if (!transparent.isEmpty()) { 880 glClearColor(0,0,0,0); 881 Region::const_iterator it = transparent.begin(); 882 Region::const_iterator const end = transparent.end(); 883 const int32_t height = hw.getHeight(); 884 while (it != end) { 885 const Rect& r(*it++); 886 const GLint sy = height - (r.top + r.height()); 887 glScissor(r.left, sy, r.width(), r.height()); 888 glClear(GL_COLOR_BUFFER_BIT); 889 } 890 } 891 892 893 /* 894 * and then, render the layers targeted at the framebuffer 895 */ 896 for (size_t i=0 ; i<count ; i++) { 897 if (cur) { 898 if ((cur[i].compositionType != HWC_FRAMEBUFFER) && 899 !(cur[i].flags & HWC_SKIP_LAYER)) { 900 // skip layers handled by the HAL 901 continue; 902 } 903 } 904 905 const sp<LayerBase>& layer(layers[i]); 906 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 907 if (!clip.isEmpty()) { 908 layer->draw(clip); 909 } 910 } 911} 912 913void SurfaceFlinger::unlockClients() 914{ 915 const LayerVector& drawingLayers(mDrawingState.layersSortedByZ); 916 const size_t count = drawingLayers.size(); 917 sp<LayerBase> const* const layers = drawingLayers.array(); 918 for (size_t i=0 ; i<count ; ++i) { 919 const sp<LayerBase>& layer = layers[i]; 920 layer->finishPageFlip(); 921 } 922} 923 924void SurfaceFlinger::debugFlashRegions() 925{ 926 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 927 const uint32_t flags = hw.getFlags(); 928 929 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 930 (flags & DisplayHardware::BUFFER_PRESERVED))) { 931 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 932 mDirtyRegion.bounds() : hw.bounds()); 933 composeSurfaces(repaint); 934 } 935 936 TextureManager::deactivateTextures(); 937 938 glDisable(GL_BLEND); 939 glDisable(GL_DITHER); 940 glDisable(GL_SCISSOR_TEST); 941 942 static int toggle = 0; 943 toggle = 1 - toggle; 944 if (toggle) { 945 glColor4f(1, 0, 1, 1); 946 } else { 947 glColor4f(1, 1, 0, 1); 948 } 949 950 Region::const_iterator it = mDirtyRegion.begin(); 951 Region::const_iterator const end = mDirtyRegion.end(); 952 while (it != end) { 953 const Rect& r = *it++; 954 GLfloat vertices[][2] = { 955 { r.left, r.top }, 956 { r.left, r.bottom }, 957 { r.right, r.bottom }, 958 { r.right, r.top } 959 }; 960 glVertexPointer(2, GL_FLOAT, 0, vertices); 961 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 962 } 963 964 if (mInvalidRegion.isEmpty()) { 965 mDirtyRegion.dump("mDirtyRegion"); 966 mInvalidRegion.dump("mInvalidRegion"); 967 } 968 hw.flip(mInvalidRegion); 969 970 if (mDebugRegion > 1) 971 usleep(mDebugRegion * 1000); 972 973 glEnable(GL_SCISSOR_TEST); 974 //mDirtyRegion.dump("mDirtyRegion"); 975} 976 977void SurfaceFlinger::drawWormhole() const 978{ 979 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 980 if (region.isEmpty()) 981 return; 982 983 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 984 const int32_t width = hw.getWidth(); 985 const int32_t height = hw.getHeight(); 986 987 glDisable(GL_BLEND); 988 glDisable(GL_DITHER); 989 990 if (LIKELY(!mDebugBackground)) { 991 glClearColor(0,0,0,0); 992 Region::const_iterator it = region.begin(); 993 Region::const_iterator const end = region.end(); 994 while (it != end) { 995 const Rect& r = *it++; 996 const GLint sy = height - (r.top + r.height()); 997 glScissor(r.left, sy, r.width(), r.height()); 998 glClear(GL_COLOR_BUFFER_BIT); 999 } 1000 } else { 1001 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1002 { width, height }, { 0, height } }; 1003 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1004 glVertexPointer(2, GL_SHORT, 0, vertices); 1005 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1006 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1007#if defined(GL_OES_EGL_image_external) 1008 if (GLExtensions::getInstance().haveTextureExternal()) { 1009 glDisable(GL_TEXTURE_EXTERNAL_OES); 1010 } 1011#endif 1012 glEnable(GL_TEXTURE_2D); 1013 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1014 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1015 glMatrixMode(GL_TEXTURE); 1016 glLoadIdentity(); 1017 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1018 Region::const_iterator it = region.begin(); 1019 Region::const_iterator const end = region.end(); 1020 while (it != end) { 1021 const Rect& r = *it++; 1022 const GLint sy = height - (r.top + r.height()); 1023 glScissor(r.left, sy, r.width(), r.height()); 1024 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1025 } 1026 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1027 } 1028} 1029 1030void SurfaceFlinger::debugShowFPS() const 1031{ 1032 static int mFrameCount; 1033 static int mLastFrameCount = 0; 1034 static nsecs_t mLastFpsTime = 0; 1035 static float mFps = 0; 1036 mFrameCount++; 1037 nsecs_t now = systemTime(); 1038 nsecs_t diff = now - mLastFpsTime; 1039 if (diff > ms2ns(250)) { 1040 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1041 mLastFpsTime = now; 1042 mLastFrameCount = mFrameCount; 1043 } 1044 // XXX: mFPS has the value we want 1045 } 1046 1047status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1048{ 1049 Mutex::Autolock _l(mStateLock); 1050 addLayer_l(layer); 1051 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1052 return NO_ERROR; 1053} 1054 1055status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1056{ 1057 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1058 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1059} 1060 1061ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1062 const sp<LayerBaseClient>& lbc) 1063{ 1064 Mutex::Autolock _l(mStateLock); 1065 1066 // attach this layer to the client 1067 ssize_t name = client->attachLayer(lbc); 1068 1069 // add this layer to the current state list 1070 addLayer_l(lbc); 1071 1072 return name; 1073} 1074 1075status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1076{ 1077 Mutex::Autolock _l(mStateLock); 1078 status_t err = purgatorizeLayer_l(layer); 1079 if (err == NO_ERROR) 1080 setTransactionFlags(eTransactionNeeded); 1081 return err; 1082} 1083 1084status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1085{ 1086 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1087 if (lbc != 0) { 1088 mLayerMap.removeItem( lbc->getSurface()->asBinder() ); 1089 } 1090 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1091 if (index >= 0) { 1092 mLayersRemoved = true; 1093 return NO_ERROR; 1094 } 1095 return status_t(index); 1096} 1097 1098status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1099{ 1100 // remove the layer from the main list (through a transaction). 1101 ssize_t err = removeLayer_l(layerBase); 1102 1103 layerBase->onRemoved(); 1104 1105 // it's possible that we don't find a layer, because it might 1106 // have been destroyed already -- this is not technically an error 1107 // from the user because there is a race between Client::destroySurface(), 1108 // ~Client() and ~ISurface(). 1109 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1110} 1111 1112status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1113{ 1114 layer->forceVisibilityTransaction(); 1115 setTransactionFlags(eTraversalNeeded); 1116 return NO_ERROR; 1117} 1118 1119uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1120{ 1121 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1122} 1123 1124uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1125{ 1126 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1127 if ((old & flags)==0) { // wake the server up 1128 signalEvent(); 1129 } 1130 return old; 1131} 1132 1133void SurfaceFlinger::openGlobalTransaction() 1134{ 1135 android_atomic_inc(&mTransactionCount); 1136} 1137 1138void SurfaceFlinger::closeGlobalTransaction() 1139{ 1140 if (android_atomic_dec(&mTransactionCount) == 1) { 1141 signalEvent(); 1142 1143 // if there is a transaction with a resize, wait for it to 1144 // take effect before returning. 1145 Mutex::Autolock _l(mStateLock); 1146 while (mResizeTransationPending) { 1147 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1148 if (CC_UNLIKELY(err != NO_ERROR)) { 1149 // just in case something goes wrong in SF, return to the 1150 // called after a few seconds. 1151 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1152 mResizeTransationPending = false; 1153 break; 1154 } 1155 } 1156 } 1157} 1158 1159status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1160{ 1161 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1162 return BAD_VALUE; 1163 1164 Mutex::Autolock _l(mStateLock); 1165 mCurrentState.freezeDisplay = 1; 1166 setTransactionFlags(eTransactionNeeded); 1167 1168 // flags is intended to communicate some sort of animation behavior 1169 // (for instance fading) 1170 return NO_ERROR; 1171} 1172 1173status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1174{ 1175 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1176 return BAD_VALUE; 1177 1178 Mutex::Autolock _l(mStateLock); 1179 mCurrentState.freezeDisplay = 0; 1180 setTransactionFlags(eTransactionNeeded); 1181 1182 // flags is intended to communicate some sort of animation behavior 1183 // (for instance fading) 1184 return NO_ERROR; 1185} 1186 1187int SurfaceFlinger::setOrientation(DisplayID dpy, 1188 int orientation, uint32_t flags) 1189{ 1190 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1191 return BAD_VALUE; 1192 1193 Mutex::Autolock _l(mStateLock); 1194 if (mCurrentState.orientation != orientation) { 1195 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1196 mCurrentState.orientationType = flags; 1197 mCurrentState.orientation = orientation; 1198 setTransactionFlags(eTransactionNeeded); 1199 mTransactionCV.wait(mStateLock); 1200 } else { 1201 orientation = BAD_VALUE; 1202 } 1203 } 1204 return orientation; 1205} 1206 1207sp<ISurface> SurfaceFlinger::createSurface(const sp<Client>& client, int pid, 1208 const String8& name, ISurfaceComposerClient::surface_data_t* params, 1209 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1210 uint32_t flags) 1211{ 1212 sp<LayerBaseClient> layer; 1213 sp<LayerBaseClient::Surface> surfaceHandle; 1214 1215 if (int32_t(w|h) < 0) { 1216 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1217 int(w), int(h)); 1218 return surfaceHandle; 1219 } 1220 1221 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1222 sp<Layer> normalLayer; 1223 switch (flags & eFXSurfaceMask) { 1224 case eFXSurfaceNormal: 1225 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1226 layer = normalLayer; 1227 break; 1228 case eFXSurfaceBlur: 1229 layer = createBlurSurface(client, d, w, h, flags); 1230 break; 1231 case eFXSurfaceDim: 1232 layer = createDimSurface(client, d, w, h, flags); 1233 break; 1234 } 1235 1236 if (layer != 0) { 1237 layer->initStates(w, h, flags); 1238 layer->setName(name); 1239 ssize_t token = addClientLayer(client, layer); 1240 1241 surfaceHandle = layer->getSurface(); 1242 if (surfaceHandle != 0) { 1243 params->token = token; 1244 params->identity = surfaceHandle->getIdentity(); 1245 params->width = w; 1246 params->height = h; 1247 params->format = format; 1248 if (normalLayer != 0) { 1249 Mutex::Autolock _l(mStateLock); 1250 mLayerMap.add(surfaceHandle->asBinder(), normalLayer); 1251 } 1252 } 1253 1254 setTransactionFlags(eTransactionNeeded); 1255 } 1256 1257 return surfaceHandle; 1258} 1259 1260sp<Layer> SurfaceFlinger::createNormalSurface( 1261 const sp<Client>& client, DisplayID display, 1262 uint32_t w, uint32_t h, uint32_t flags, 1263 PixelFormat& format) 1264{ 1265 // initialize the surfaces 1266 switch (format) { // TODO: take h/w into account 1267 case PIXEL_FORMAT_TRANSPARENT: 1268 case PIXEL_FORMAT_TRANSLUCENT: 1269 format = PIXEL_FORMAT_RGBA_8888; 1270 break; 1271 case PIXEL_FORMAT_OPAQUE: 1272#ifdef NO_RGBX_8888 1273 format = PIXEL_FORMAT_RGB_565; 1274#else 1275 format = PIXEL_FORMAT_RGBX_8888; 1276#endif 1277 break; 1278 } 1279 1280#ifdef NO_RGBX_8888 1281 if (format == PIXEL_FORMAT_RGBX_8888) 1282 format = PIXEL_FORMAT_RGBA_8888; 1283#endif 1284 1285 sp<Layer> layer = new Layer(this, display, client); 1286 status_t err = layer->setBuffers(w, h, format, flags); 1287 if (LIKELY(err != NO_ERROR)) { 1288 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1289 layer.clear(); 1290 } 1291 return layer; 1292} 1293 1294sp<LayerBlur> SurfaceFlinger::createBlurSurface( 1295 const sp<Client>& client, DisplayID display, 1296 uint32_t w, uint32_t h, uint32_t flags) 1297{ 1298 sp<LayerBlur> layer = new LayerBlur(this, display, client); 1299 layer->initStates(w, h, flags); 1300 return layer; 1301} 1302 1303sp<LayerDim> SurfaceFlinger::createDimSurface( 1304 const sp<Client>& client, DisplayID display, 1305 uint32_t w, uint32_t h, uint32_t flags) 1306{ 1307 sp<LayerDim> layer = new LayerDim(this, display, client); 1308 layer->initStates(w, h, flags); 1309 return layer; 1310} 1311 1312status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1313{ 1314 /* 1315 * called by the window manager, when a surface should be marked for 1316 * destruction. 1317 * 1318 * The surface is removed from the current and drawing lists, but placed 1319 * in the purgatory queue, so it's not destroyed right-away (we need 1320 * to wait for all client's references to go away first). 1321 */ 1322 1323 status_t err = NAME_NOT_FOUND; 1324 Mutex::Autolock _l(mStateLock); 1325 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1326 if (layer != 0) { 1327 err = purgatorizeLayer_l(layer); 1328 if (err == NO_ERROR) { 1329 setTransactionFlags(eTransactionNeeded); 1330 } 1331 } 1332 return err; 1333} 1334 1335status_t SurfaceFlinger::destroySurface(const sp<LayerBaseClient>& layer) 1336{ 1337 // called by ~ISurface() when all references are gone 1338 1339 class MessageDestroySurface : public MessageBase { 1340 SurfaceFlinger* flinger; 1341 sp<LayerBaseClient> layer; 1342 public: 1343 MessageDestroySurface( 1344 SurfaceFlinger* flinger, const sp<LayerBaseClient>& layer) 1345 : flinger(flinger), layer(layer) { } 1346 virtual bool handler() { 1347 sp<LayerBaseClient> l(layer); 1348 layer.clear(); // clear it outside of the lock; 1349 Mutex::Autolock _l(flinger->mStateLock); 1350 /* 1351 * remove the layer from the current list -- chances are that it's 1352 * not in the list anyway, because it should have been removed 1353 * already upon request of the client (eg: window manager). 1354 * However, a buggy client could have not done that. 1355 * Since we know we don't have any more clients, we don't need 1356 * to use the purgatory. 1357 */ 1358 status_t err = flinger->removeLayer_l(l); 1359 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1360 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1361 return true; 1362 } 1363 }; 1364 1365 postMessageAsync( new MessageDestroySurface(this, layer) ); 1366 return NO_ERROR; 1367} 1368 1369status_t SurfaceFlinger::setClientState( 1370 const sp<Client>& client, 1371 int32_t count, 1372 const layer_state_t* states) 1373{ 1374 Mutex::Autolock _l(mStateLock); 1375 uint32_t flags = 0; 1376 for (int i=0 ; i<count ; i++) { 1377 const layer_state_t& s(states[i]); 1378 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1379 if (layer != 0) { 1380 const uint32_t what = s.what; 1381 if (what & ePositionChanged) { 1382 if (layer->setPosition(s.x, s.y)) 1383 flags |= eTraversalNeeded; 1384 } 1385 if (what & eLayerChanged) { 1386 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1387 if (layer->setLayer(s.z)) { 1388 mCurrentState.layersSortedByZ.removeAt(idx); 1389 mCurrentState.layersSortedByZ.add(layer); 1390 // we need traversal (state changed) 1391 // AND transaction (list changed) 1392 flags |= eTransactionNeeded|eTraversalNeeded; 1393 } 1394 } 1395 if (what & eSizeChanged) { 1396 if (layer->setSize(s.w, s.h)) { 1397 flags |= eTraversalNeeded; 1398 mResizeTransationPending = true; 1399 } 1400 } 1401 if (what & eAlphaChanged) { 1402 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1403 flags |= eTraversalNeeded; 1404 } 1405 if (what & eMatrixChanged) { 1406 if (layer->setMatrix(s.matrix)) 1407 flags |= eTraversalNeeded; 1408 } 1409 if (what & eTransparentRegionChanged) { 1410 if (layer->setTransparentRegionHint(s.transparentRegion)) 1411 flags |= eTraversalNeeded; 1412 } 1413 if (what & eVisibilityChanged) { 1414 if (layer->setFlags(s.flags, s.mask)) 1415 flags |= eTraversalNeeded; 1416 } 1417 } 1418 } 1419 if (flags) { 1420 setTransactionFlags(flags); 1421 } 1422 return NO_ERROR; 1423} 1424 1425void SurfaceFlinger::screenReleased(int dpy) 1426{ 1427 // this may be called by a signal handler, we can't do too much in here 1428 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1429 signalEvent(); 1430} 1431 1432void SurfaceFlinger::screenAcquired(int dpy) 1433{ 1434 // this may be called by a signal handler, we can't do too much in here 1435 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1436 signalEvent(); 1437} 1438 1439status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1440{ 1441 const size_t SIZE = 4096; 1442 char buffer[SIZE]; 1443 String8 result; 1444 if (!mDump.checkCalling()) { 1445 snprintf(buffer, SIZE, "Permission Denial: " 1446 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1447 IPCThreadState::self()->getCallingPid(), 1448 IPCThreadState::self()->getCallingUid()); 1449 result.append(buffer); 1450 } else { 1451 1452 // figure out if we're stuck somewhere 1453 const nsecs_t now = systemTime(); 1454 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1455 const nsecs_t inTransaction(mDebugInTransaction); 1456 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1457 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1458 1459 // Try to get the main lock, but don't insist if we can't 1460 // (this would indicate SF is stuck, but we want to be able to 1461 // print something in dumpsys). 1462 int retry = 3; 1463 while (mStateLock.tryLock()<0 && --retry>=0) { 1464 usleep(1000000); 1465 } 1466 const bool locked(retry >= 0); 1467 if (!locked) { 1468 snprintf(buffer, SIZE, 1469 "SurfaceFlinger appears to be unresponsive, " 1470 "dumping anyways (no locks held)\n"); 1471 result.append(buffer); 1472 } 1473 1474 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1475 const size_t count = currentLayers.size(); 1476 for (size_t i=0 ; i<count ; i++) { 1477 const sp<LayerBase>& layer(currentLayers[i]); 1478 layer->dump(result, buffer, SIZE); 1479 const Layer::State& s(layer->drawingState()); 1480 s.transparentRegion.dump(result, "transparentRegion"); 1481 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1482 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1483 } 1484 1485 mWormholeRegion.dump(result, "WormholeRegion"); 1486 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1487 snprintf(buffer, SIZE, 1488 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1489 mFreezeDisplay?"yes":"no", mFreezeCount, 1490 mCurrentState.orientation, hw.canDraw()); 1491 result.append(buffer); 1492 snprintf(buffer, SIZE, 1493 " last eglSwapBuffers() time: %f us\n" 1494 " last transaction time : %f us\n", 1495 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1496 result.append(buffer); 1497 1498 if (inSwapBuffersDuration || !locked) { 1499 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1500 inSwapBuffersDuration/1000.0); 1501 result.append(buffer); 1502 } 1503 1504 if (inTransactionDuration || !locked) { 1505 snprintf(buffer, SIZE, " transaction time: %f us\n", 1506 inTransactionDuration/1000.0); 1507 result.append(buffer); 1508 } 1509 1510 HWComposer& hwc(hw.getHwComposer()); 1511 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1512 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1513 mDebugDisableHWC ? "disabled" : "enabled"); 1514 result.append(buffer); 1515 hwc.dump(result, buffer, SIZE); 1516 1517 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1518 alloc.dump(result); 1519 hw.dump(result); 1520 1521 if (locked) { 1522 mStateLock.unlock(); 1523 } 1524 } 1525 write(fd, result.string(), result.size()); 1526 return NO_ERROR; 1527} 1528 1529status_t SurfaceFlinger::onTransact( 1530 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1531{ 1532 switch (code) { 1533 case CREATE_CONNECTION: 1534 case OPEN_GLOBAL_TRANSACTION: 1535 case CLOSE_GLOBAL_TRANSACTION: 1536 case SET_ORIENTATION: 1537 case FREEZE_DISPLAY: 1538 case UNFREEZE_DISPLAY: 1539 case BOOT_FINISHED: 1540 case TURN_ELECTRON_BEAM_OFF: 1541 case TURN_ELECTRON_BEAM_ON: 1542 { 1543 // codes that require permission check 1544 IPCThreadState* ipc = IPCThreadState::self(); 1545 const int pid = ipc->getCallingPid(); 1546 const int uid = ipc->getCallingUid(); 1547 if ((uid != AID_GRAPHICS) && !mAccessSurfaceFlinger.check(pid, uid)) { 1548 LOGE("Permission Denial: " 1549 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1550 return PERMISSION_DENIED; 1551 } 1552 break; 1553 } 1554 case CAPTURE_SCREEN: 1555 { 1556 // codes that require permission check 1557 IPCThreadState* ipc = IPCThreadState::self(); 1558 const int pid = ipc->getCallingPid(); 1559 const int uid = ipc->getCallingUid(); 1560 if ((uid != AID_GRAPHICS) && !mReadFramebuffer.check(pid, uid)) { 1561 LOGE("Permission Denial: " 1562 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1563 return PERMISSION_DENIED; 1564 } 1565 break; 1566 } 1567 } 1568 1569 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1570 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1571 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1572 if (UNLIKELY(!mHardwareTest.checkCalling())) { 1573 IPCThreadState* ipc = IPCThreadState::self(); 1574 const int pid = ipc->getCallingPid(); 1575 const int uid = ipc->getCallingUid(); 1576 LOGE("Permission Denial: " 1577 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1578 return PERMISSION_DENIED; 1579 } 1580 int n; 1581 switch (code) { 1582 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1583 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1584 return NO_ERROR; 1585 case 1002: // SHOW_UPDATES 1586 n = data.readInt32(); 1587 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1588 return NO_ERROR; 1589 case 1003: // SHOW_BACKGROUND 1590 n = data.readInt32(); 1591 mDebugBackground = n ? 1 : 0; 1592 return NO_ERROR; 1593 case 1008: // toggle use of hw composer 1594 n = data.readInt32(); 1595 mDebugDisableHWC = n ? 1 : 0; 1596 mHwWorkListDirty = true; 1597 // fall-through... 1598 case 1004:{ // repaint everything 1599 Mutex::Autolock _l(mStateLock); 1600 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1601 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1602 signalEvent(); 1603 return NO_ERROR; 1604 } 1605 case 1005:{ // force transaction 1606 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1607 return NO_ERROR; 1608 } 1609 case 1006:{ // enable/disable GraphicLog 1610 int enabled = data.readInt32(); 1611 GraphicLog::getInstance().setEnabled(enabled); 1612 return NO_ERROR; 1613 } 1614 case 1007: // set mFreezeCount 1615 mFreezeCount = data.readInt32(); 1616 mFreezeDisplayTime = 0; 1617 return NO_ERROR; 1618 case 1010: // interrogate. 1619 reply->writeInt32(0); 1620 reply->writeInt32(0); 1621 reply->writeInt32(mDebugRegion); 1622 reply->writeInt32(mDebugBackground); 1623 return NO_ERROR; 1624 case 1013: { 1625 Mutex::Autolock _l(mStateLock); 1626 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1627 reply->writeInt32(hw.getPageFlipCount()); 1628 } 1629 return NO_ERROR; 1630 } 1631 } 1632 return err; 1633} 1634 1635// --------------------------------------------------------------------------- 1636 1637status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1638 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1639{ 1640 if (!GLExtensions::getInstance().haveFramebufferObject()) 1641 return INVALID_OPERATION; 1642 1643 // get screen geometry 1644 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1645 const uint32_t hw_w = hw.getWidth(); 1646 const uint32_t hw_h = hw.getHeight(); 1647 GLfloat u = 1; 1648 GLfloat v = 1; 1649 1650 // make sure to clear all GL error flags 1651 while ( glGetError() != GL_NO_ERROR ) ; 1652 1653 // create a FBO 1654 GLuint name, tname; 1655 glGenTextures(1, &tname); 1656 glBindTexture(GL_TEXTURE_2D, tname); 1657 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1658 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1659 if (glGetError() != GL_NO_ERROR) { 1660 while ( glGetError() != GL_NO_ERROR ) ; 1661 GLint tw = (2 << (31 - clz(hw_w))); 1662 GLint th = (2 << (31 - clz(hw_h))); 1663 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1664 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1665 u = GLfloat(hw_w) / tw; 1666 v = GLfloat(hw_h) / th; 1667 } 1668 glGenFramebuffersOES(1, &name); 1669 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1670 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1671 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1672 1673 // redraw the screen entirely... 1674 glClearColor(0,0,0,1); 1675 glClear(GL_COLOR_BUFFER_BIT); 1676 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1677 const size_t count = layers.size(); 1678 for (size_t i=0 ; i<count ; ++i) { 1679 const sp<LayerBase>& layer(layers[i]); 1680 layer->drawForSreenShot(); 1681 } 1682 1683 // back to main framebuffer 1684 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1685 glDisable(GL_SCISSOR_TEST); 1686 glDeleteFramebuffersOES(1, &name); 1687 1688 *textureName = tname; 1689 *uOut = u; 1690 *vOut = v; 1691 return NO_ERROR; 1692} 1693 1694// --------------------------------------------------------------------------- 1695 1696status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1697{ 1698 status_t result = PERMISSION_DENIED; 1699 1700 if (!GLExtensions::getInstance().haveFramebufferObject()) 1701 return INVALID_OPERATION; 1702 1703 // get screen geometry 1704 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1705 const uint32_t hw_w = hw.getWidth(); 1706 const uint32_t hw_h = hw.getHeight(); 1707 const Region screenBounds(hw.bounds()); 1708 1709 GLfloat u, v; 1710 GLuint tname; 1711 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1712 if (result != NO_ERROR) { 1713 return result; 1714 } 1715 1716 GLfloat vtx[8]; 1717 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1718 glEnable(GL_TEXTURE_2D); 1719 glBindTexture(GL_TEXTURE_2D, tname); 1720 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1721 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1722 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1723 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1724 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1725 glVertexPointer(2, GL_FLOAT, 0, vtx); 1726 1727 class s_curve_interpolator { 1728 const float nbFrames, s, v; 1729 public: 1730 s_curve_interpolator(int nbFrames, float s) 1731 : nbFrames(1.0f / (nbFrames-1)), s(s), 1732 v(1.0f + expf(-s + 0.5f*s)) { 1733 } 1734 float operator()(int f) { 1735 const float x = f * nbFrames; 1736 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1737 } 1738 }; 1739 1740 class v_stretch { 1741 const GLfloat hw_w, hw_h; 1742 public: 1743 v_stretch(uint32_t hw_w, uint32_t hw_h) 1744 : hw_w(hw_w), hw_h(hw_h) { 1745 } 1746 void operator()(GLfloat* vtx, float v) { 1747 const GLfloat w = hw_w + (hw_w * v); 1748 const GLfloat h = hw_h - (hw_h * v); 1749 const GLfloat x = (hw_w - w) * 0.5f; 1750 const GLfloat y = (hw_h - h) * 0.5f; 1751 vtx[0] = x; vtx[1] = y; 1752 vtx[2] = x; vtx[3] = y + h; 1753 vtx[4] = x + w; vtx[5] = y + h; 1754 vtx[6] = x + w; vtx[7] = y; 1755 } 1756 }; 1757 1758 class h_stretch { 1759 const GLfloat hw_w, hw_h; 1760 public: 1761 h_stretch(uint32_t hw_w, uint32_t hw_h) 1762 : hw_w(hw_w), hw_h(hw_h) { 1763 } 1764 void operator()(GLfloat* vtx, float v) { 1765 const GLfloat w = hw_w - (hw_w * v); 1766 const GLfloat h = 1.0f; 1767 const GLfloat x = (hw_w - w) * 0.5f; 1768 const GLfloat y = (hw_h - h) * 0.5f; 1769 vtx[0] = x; vtx[1] = y; 1770 vtx[2] = x; vtx[3] = y + h; 1771 vtx[4] = x + w; vtx[5] = y + h; 1772 vtx[6] = x + w; vtx[7] = y; 1773 } 1774 }; 1775 1776 // the full animation is 24 frames 1777 const int nbFrames = 12; 1778 s_curve_interpolator itr(nbFrames, 7.5f); 1779 s_curve_interpolator itg(nbFrames, 8.0f); 1780 s_curve_interpolator itb(nbFrames, 8.5f); 1781 1782 v_stretch vverts(hw_w, hw_h); 1783 glEnable(GL_BLEND); 1784 glBlendFunc(GL_ONE, GL_ONE); 1785 for (int i=0 ; i<nbFrames ; i++) { 1786 float x, y, w, h; 1787 const float vr = itr(i); 1788 const float vg = itg(i); 1789 const float vb = itb(i); 1790 1791 // clear screen 1792 glColorMask(1,1,1,1); 1793 glClear(GL_COLOR_BUFFER_BIT); 1794 glEnable(GL_TEXTURE_2D); 1795 1796 // draw the red plane 1797 vverts(vtx, vr); 1798 glColorMask(1,0,0,1); 1799 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1800 1801 // draw the green plane 1802 vverts(vtx, vg); 1803 glColorMask(0,1,0,1); 1804 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1805 1806 // draw the blue plane 1807 vverts(vtx, vb); 1808 glColorMask(0,0,1,1); 1809 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1810 1811 // draw the white highlight (we use the last vertices) 1812 glDisable(GL_TEXTURE_2D); 1813 glColorMask(1,1,1,1); 1814 glColor4f(vg, vg, vg, 1); 1815 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1816 hw.flip(screenBounds); 1817 } 1818 1819 h_stretch hverts(hw_w, hw_h); 1820 glDisable(GL_BLEND); 1821 glDisable(GL_TEXTURE_2D); 1822 glColorMask(1,1,1,1); 1823 for (int i=0 ; i<nbFrames ; i++) { 1824 const float v = itg(i); 1825 hverts(vtx, v); 1826 glClear(GL_COLOR_BUFFER_BIT); 1827 glColor4f(1-v, 1-v, 1-v, 1); 1828 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1829 hw.flip(screenBounds); 1830 } 1831 1832 glColorMask(1,1,1,1); 1833 glEnable(GL_SCISSOR_TEST); 1834 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1835 glDeleteTextures(1, &tname); 1836 return NO_ERROR; 1837} 1838 1839status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1840{ 1841 status_t result = PERMISSION_DENIED; 1842 1843 if (!GLExtensions::getInstance().haveFramebufferObject()) 1844 return INVALID_OPERATION; 1845 1846 1847 // get screen geometry 1848 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1849 const uint32_t hw_w = hw.getWidth(); 1850 const uint32_t hw_h = hw.getHeight(); 1851 const Region screenBounds(hw.bounds()); 1852 1853 GLfloat u, v; 1854 GLuint tname; 1855 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1856 if (result != NO_ERROR) { 1857 return result; 1858 } 1859 1860 // back to main framebuffer 1861 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1862 glDisable(GL_SCISSOR_TEST); 1863 1864 GLfloat vtx[8]; 1865 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1866 glEnable(GL_TEXTURE_2D); 1867 glBindTexture(GL_TEXTURE_2D, tname); 1868 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 1869 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1870 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1871 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1872 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1873 glVertexPointer(2, GL_FLOAT, 0, vtx); 1874 1875 class s_curve_interpolator { 1876 const float nbFrames, s, v; 1877 public: 1878 s_curve_interpolator(int nbFrames, float s) 1879 : nbFrames(1.0f / (nbFrames-1)), s(s), 1880 v(1.0f + expf(-s + 0.5f*s)) { 1881 } 1882 float operator()(int f) { 1883 const float x = f * nbFrames; 1884 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1885 } 1886 }; 1887 1888 class v_stretch { 1889 const GLfloat hw_w, hw_h; 1890 public: 1891 v_stretch(uint32_t hw_w, uint32_t hw_h) 1892 : hw_w(hw_w), hw_h(hw_h) { 1893 } 1894 void operator()(GLfloat* vtx, float v) { 1895 const GLfloat w = hw_w + (hw_w * v); 1896 const GLfloat h = hw_h - (hw_h * v); 1897 const GLfloat x = (hw_w - w) * 0.5f; 1898 const GLfloat y = (hw_h - h) * 0.5f; 1899 vtx[0] = x; vtx[1] = y; 1900 vtx[2] = x; vtx[3] = y + h; 1901 vtx[4] = x + w; vtx[5] = y + h; 1902 vtx[6] = x + w; vtx[7] = y; 1903 } 1904 }; 1905 1906 class h_stretch { 1907 const GLfloat hw_w, hw_h; 1908 public: 1909 h_stretch(uint32_t hw_w, uint32_t hw_h) 1910 : hw_w(hw_w), hw_h(hw_h) { 1911 } 1912 void operator()(GLfloat* vtx, float v) { 1913 const GLfloat w = hw_w - (hw_w * v); 1914 const GLfloat h = 1.0f; 1915 const GLfloat x = (hw_w - w) * 0.5f; 1916 const GLfloat y = (hw_h - h) * 0.5f; 1917 vtx[0] = x; vtx[1] = y; 1918 vtx[2] = x; vtx[3] = y + h; 1919 vtx[4] = x + w; vtx[5] = y + h; 1920 vtx[6] = x + w; vtx[7] = y; 1921 } 1922 }; 1923 1924 // the full animation is 12 frames 1925 int nbFrames = 8; 1926 s_curve_interpolator itr(nbFrames, 7.5f); 1927 s_curve_interpolator itg(nbFrames, 8.0f); 1928 s_curve_interpolator itb(nbFrames, 8.5f); 1929 1930 h_stretch hverts(hw_w, hw_h); 1931 glDisable(GL_BLEND); 1932 glDisable(GL_TEXTURE_2D); 1933 glColorMask(1,1,1,1); 1934 for (int i=nbFrames-1 ; i>=0 ; i--) { 1935 const float v = itg(i); 1936 hverts(vtx, v); 1937 glClear(GL_COLOR_BUFFER_BIT); 1938 glColor4f(1-v, 1-v, 1-v, 1); 1939 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1940 hw.flip(screenBounds); 1941 } 1942 1943 nbFrames = 4; 1944 v_stretch vverts(hw_w, hw_h); 1945 glEnable(GL_BLEND); 1946 glBlendFunc(GL_ONE, GL_ONE); 1947 for (int i=nbFrames-1 ; i>=0 ; i--) { 1948 float x, y, w, h; 1949 const float vr = itr(i); 1950 const float vg = itg(i); 1951 const float vb = itb(i); 1952 1953 // clear screen 1954 glColorMask(1,1,1,1); 1955 glClear(GL_COLOR_BUFFER_BIT); 1956 glEnable(GL_TEXTURE_2D); 1957 1958 // draw the red plane 1959 vverts(vtx, vr); 1960 glColorMask(1,0,0,1); 1961 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1962 1963 // draw the green plane 1964 vverts(vtx, vg); 1965 glColorMask(0,1,0,1); 1966 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1967 1968 // draw the blue plane 1969 vverts(vtx, vb); 1970 glColorMask(0,0,1,1); 1971 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1972 1973 hw.flip(screenBounds); 1974 } 1975 1976 glColorMask(1,1,1,1); 1977 glEnable(GL_SCISSOR_TEST); 1978 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1979 glDeleteTextures(1, &tname); 1980 1981 return NO_ERROR; 1982} 1983 1984// --------------------------------------------------------------------------- 1985 1986status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 1987{ 1988 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 1989 if (!hw.canDraw()) { 1990 // we're already off 1991 return NO_ERROR; 1992 } 1993 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 1994 electronBeamOffAnimationImplLocked(); 1995 } 1996 1997 // always clear the whole screen at the end of the animation 1998 glClearColor(0,0,0,1); 1999 glDisable(GL_SCISSOR_TEST); 2000 glClear(GL_COLOR_BUFFER_BIT); 2001 glEnable(GL_SCISSOR_TEST); 2002 hw.flip( Region(hw.bounds()) ); 2003 2004 hw.setCanDraw(false); 2005 return NO_ERROR; 2006} 2007 2008status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2009{ 2010 class MessageTurnElectronBeamOff : public MessageBase { 2011 SurfaceFlinger* flinger; 2012 int32_t mode; 2013 status_t result; 2014 public: 2015 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2016 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2017 } 2018 status_t getResult() const { 2019 return result; 2020 } 2021 virtual bool handler() { 2022 Mutex::Autolock _l(flinger->mStateLock); 2023 result = flinger->turnElectronBeamOffImplLocked(mode); 2024 return true; 2025 } 2026 }; 2027 2028 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2029 status_t res = postMessageSync(msg); 2030 if (res == NO_ERROR) { 2031 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2032 2033 // work-around: when the power-manager calls us we activate the 2034 // animation. eventually, the "on" animation will be called 2035 // by the power-manager itself 2036 mElectronBeamAnimationMode = mode; 2037 } 2038 return res; 2039} 2040 2041// --------------------------------------------------------------------------- 2042 2043status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2044{ 2045 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2046 if (hw.canDraw()) { 2047 // we're already on 2048 return NO_ERROR; 2049 } 2050 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2051 electronBeamOnAnimationImplLocked(); 2052 } 2053 hw.setCanDraw(true); 2054 2055 // make sure to redraw the whole screen when the animation is done 2056 mDirtyRegion.set(hw.bounds()); 2057 signalEvent(); 2058 2059 return NO_ERROR; 2060} 2061 2062status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2063{ 2064 class MessageTurnElectronBeamOn : public MessageBase { 2065 SurfaceFlinger* flinger; 2066 int32_t mode; 2067 status_t result; 2068 public: 2069 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2070 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2071 } 2072 status_t getResult() const { 2073 return result; 2074 } 2075 virtual bool handler() { 2076 Mutex::Autolock _l(flinger->mStateLock); 2077 result = flinger->turnElectronBeamOnImplLocked(mode); 2078 return true; 2079 } 2080 }; 2081 2082 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2083 return NO_ERROR; 2084} 2085 2086// --------------------------------------------------------------------------- 2087 2088status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2089 sp<IMemoryHeap>* heap, 2090 uint32_t* w, uint32_t* h, PixelFormat* f, 2091 uint32_t sw, uint32_t sh) 2092{ 2093 status_t result = PERMISSION_DENIED; 2094 2095 // only one display supported for now 2096 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2097 return BAD_VALUE; 2098 2099 if (!GLExtensions::getInstance().haveFramebufferObject()) 2100 return INVALID_OPERATION; 2101 2102 // get screen geometry 2103 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2104 const uint32_t hw_w = hw.getWidth(); 2105 const uint32_t hw_h = hw.getHeight(); 2106 2107 if ((sw > hw_w) || (sh > hw_h)) 2108 return BAD_VALUE; 2109 2110 sw = (!sw) ? hw_w : sw; 2111 sh = (!sh) ? hw_h : sh; 2112 const size_t size = sw * sh * 4; 2113 2114 // make sure to clear all GL error flags 2115 while ( glGetError() != GL_NO_ERROR ) ; 2116 2117 // create a FBO 2118 GLuint name, tname; 2119 glGenRenderbuffersOES(1, &tname); 2120 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2121 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2122 glGenFramebuffersOES(1, &name); 2123 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2124 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2125 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2126 2127 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2128 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2129 2130 // invert everything, b/c glReadPixel() below will invert the FB 2131 glViewport(0, 0, sw, sh); 2132 glMatrixMode(GL_PROJECTION); 2133 glPushMatrix(); 2134 glLoadIdentity(); 2135 glOrthof(0, hw_w, 0, hw_h, 0, 1); 2136 glMatrixMode(GL_MODELVIEW); 2137 2138 // redraw the screen entirely... 2139 glClearColor(0,0,0,1); 2140 glClear(GL_COLOR_BUFFER_BIT); 2141 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 2142 const size_t count = layers.size(); 2143 for (size_t i=0 ; i<count ; ++i) { 2144 const sp<LayerBase>& layer(layers[i]); 2145 layer->drawForSreenShot(); 2146 } 2147 2148 // XXX: this is needed on tegra 2149 glScissor(0, 0, sw, sh); 2150 2151 // check for errors and return screen capture 2152 if (glGetError() != GL_NO_ERROR) { 2153 // error while rendering 2154 result = INVALID_OPERATION; 2155 } else { 2156 // allocate shared memory large enough to hold the 2157 // screen capture 2158 sp<MemoryHeapBase> base( 2159 new MemoryHeapBase(size, 0, "screen-capture") ); 2160 void* const ptr = base->getBase(); 2161 if (ptr) { 2162 // capture the screen with glReadPixels() 2163 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2164 if (glGetError() == GL_NO_ERROR) { 2165 *heap = base; 2166 *w = sw; 2167 *h = sh; 2168 *f = PIXEL_FORMAT_RGBA_8888; 2169 result = NO_ERROR; 2170 } 2171 } else { 2172 result = NO_MEMORY; 2173 } 2174 } 2175 2176 glEnable(GL_SCISSOR_TEST); 2177 glViewport(0, 0, hw_w, hw_h); 2178 glMatrixMode(GL_PROJECTION); 2179 glPopMatrix(); 2180 glMatrixMode(GL_MODELVIEW); 2181 2182 2183 } else { 2184 result = BAD_VALUE; 2185 } 2186 2187 // release FBO resources 2188 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2189 glDeleteRenderbuffersOES(1, &tname); 2190 glDeleteFramebuffersOES(1, &name); 2191 return result; 2192} 2193 2194 2195status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2196 sp<IMemoryHeap>* heap, 2197 uint32_t* width, uint32_t* height, PixelFormat* format, 2198 uint32_t sw, uint32_t sh) 2199{ 2200 // only one display supported for now 2201 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2202 return BAD_VALUE; 2203 2204 if (!GLExtensions::getInstance().haveFramebufferObject()) 2205 return INVALID_OPERATION; 2206 2207 class MessageCaptureScreen : public MessageBase { 2208 SurfaceFlinger* flinger; 2209 DisplayID dpy; 2210 sp<IMemoryHeap>* heap; 2211 uint32_t* w; 2212 uint32_t* h; 2213 PixelFormat* f; 2214 uint32_t sw; 2215 uint32_t sh; 2216 status_t result; 2217 public: 2218 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2219 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2220 uint32_t sw, uint32_t sh) 2221 : flinger(flinger), dpy(dpy), 2222 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), result(PERMISSION_DENIED) 2223 { 2224 } 2225 status_t getResult() const { 2226 return result; 2227 } 2228 virtual bool handler() { 2229 Mutex::Autolock _l(flinger->mStateLock); 2230 2231 // if we have secure windows, never allow the screen capture 2232 if (flinger->mSecureFrameBuffer) 2233 return true; 2234 2235 result = flinger->captureScreenImplLocked(dpy, 2236 heap, w, h, f, sw, sh); 2237 2238 return true; 2239 } 2240 }; 2241 2242 sp<MessageBase> msg = new MessageCaptureScreen(this, 2243 dpy, heap, width, height, format, sw, sh); 2244 status_t res = postMessageSync(msg); 2245 if (res == NO_ERROR) { 2246 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2247 } 2248 return res; 2249} 2250 2251// --------------------------------------------------------------------------- 2252 2253sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2254{ 2255 sp<Layer> result; 2256 Mutex::Autolock _l(mStateLock); 2257 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2258 return result; 2259} 2260 2261// --------------------------------------------------------------------------- 2262 2263Client::Client(const sp<SurfaceFlinger>& flinger) 2264 : mFlinger(flinger), mNameGenerator(1) 2265{ 2266} 2267 2268Client::~Client() 2269{ 2270 const size_t count = mLayers.size(); 2271 for (size_t i=0 ; i<count ; i++) { 2272 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2273 if (layer != 0) { 2274 mFlinger->removeLayer(layer); 2275 } 2276 } 2277} 2278 2279status_t Client::initCheck() const { 2280 return NO_ERROR; 2281} 2282 2283ssize_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2284{ 2285 int32_t name = android_atomic_inc(&mNameGenerator); 2286 mLayers.add(name, layer); 2287 return name; 2288} 2289 2290void Client::detachLayer(const LayerBaseClient* layer) 2291{ 2292 // we do a linear search here, because this doesn't happen often 2293 const size_t count = mLayers.size(); 2294 for (size_t i=0 ; i<count ; i++) { 2295 if (mLayers.valueAt(i) == layer) { 2296 mLayers.removeItemsAt(i, 1); 2297 break; 2298 } 2299 } 2300} 2301sp<LayerBaseClient> Client::getLayerUser(int32_t i) const { 2302 sp<LayerBaseClient> lbc; 2303 const wp<LayerBaseClient>& layer(mLayers.valueFor(i)); 2304 if (layer != 0) { 2305 lbc = layer.promote(); 2306 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2307 } 2308 return lbc; 2309} 2310 2311sp<IMemoryHeap> Client::getControlBlock() const { 2312 return 0; 2313} 2314ssize_t Client::getTokenForSurface(const sp<ISurface>& sur) const { 2315 return -1; 2316} 2317sp<ISurface> Client::createSurface( 2318 ISurfaceComposerClient::surface_data_t* params, int pid, 2319 const String8& name, 2320 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2321 uint32_t flags) 2322{ 2323 return mFlinger->createSurface(this, pid, name, params, 2324 display, w, h, format, flags); 2325} 2326status_t Client::destroySurface(SurfaceID sid) { 2327 return mFlinger->removeSurface(this, sid); 2328} 2329status_t Client::setState(int32_t count, const layer_state_t* states) { 2330 return mFlinger->setClientState(this, count, states); 2331} 2332 2333// --------------------------------------------------------------------------- 2334 2335UserClient::UserClient(const sp<SurfaceFlinger>& flinger) 2336 : ctrlblk(0), mBitmap(0), mFlinger(flinger) 2337{ 2338 const int pgsize = getpagesize(); 2339 const int cblksize = ((sizeof(SharedClient)+(pgsize-1))&~(pgsize-1)); 2340 2341 mCblkHeap = new MemoryHeapBase(cblksize, 0, 2342 "SurfaceFlinger Client control-block"); 2343 2344 ctrlblk = static_cast<SharedClient *>(mCblkHeap->getBase()); 2345 if (ctrlblk) { // construct the shared structure in-place. 2346 new(ctrlblk) SharedClient; 2347 } 2348} 2349 2350UserClient::~UserClient() 2351{ 2352 if (ctrlblk) { 2353 ctrlblk->~SharedClient(); // destroy our shared-structure. 2354 } 2355 2356 /* 2357 * When a UserClient dies, it's unclear what to do exactly. 2358 * We could go ahead and destroy all surfaces linked to that client 2359 * however, it wouldn't be fair to the main Client 2360 * (usually the the window-manager), which might want to re-target 2361 * the layer to another UserClient. 2362 * I think the best is to do nothing, or not much; in most cases the 2363 * WM itself will go ahead and clean things up when it detects a client of 2364 * his has died. 2365 * The remaining question is what to display? currently we keep 2366 * just keep the current buffer. 2367 */ 2368} 2369 2370status_t UserClient::initCheck() const { 2371 return ctrlblk == 0 ? NO_INIT : NO_ERROR; 2372} 2373 2374void UserClient::detachLayer(const Layer* layer) 2375{ 2376 int32_t name = layer->getToken(); 2377 if (name >= 0) { 2378 int32_t mask = 1LU<<name; 2379 if ((android_atomic_and(~mask, &mBitmap) & mask) == 0) { 2380 LOGW("token %d wasn't marked as used %08x", name, int(mBitmap)); 2381 } 2382 } 2383} 2384 2385sp<IMemoryHeap> UserClient::getControlBlock() const { 2386 return mCblkHeap; 2387} 2388 2389ssize_t UserClient::getTokenForSurface(const sp<ISurface>& sur) const 2390{ 2391 int32_t name = NAME_NOT_FOUND; 2392 sp<Layer> layer(mFlinger->getLayer(sur)); 2393 if (layer == 0) { 2394 return name; 2395 } 2396 2397 // if this layer already has a token, just return it 2398 name = layer->getToken(); 2399 if ((name >= 0) && (layer->getClient() == this)) { 2400 return name; 2401 } 2402 2403 name = 0; 2404 do { 2405 int32_t mask = 1LU<<name; 2406 if ((android_atomic_or(mask, &mBitmap) & mask) == 0) { 2407 // we found and locked that name 2408 status_t err = layer->setToken( 2409 const_cast<UserClient*>(this), ctrlblk, name); 2410 if (err != NO_ERROR) { 2411 // free the name 2412 android_atomic_and(~mask, &mBitmap); 2413 name = err; 2414 } 2415 break; 2416 } 2417 if (++name > 31) 2418 name = NO_MEMORY; 2419 } while(name >= 0); 2420 2421 //LOGD("getTokenForSurface(%p) => %d (client=%p, bitmap=%08lx)", 2422 // sur->asBinder().get(), name, this, mBitmap); 2423 return name; 2424} 2425 2426sp<ISurface> UserClient::createSurface( 2427 ISurfaceComposerClient::surface_data_t* params, int pid, 2428 const String8& name, 2429 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2430 uint32_t flags) { 2431 return 0; 2432} 2433status_t UserClient::destroySurface(SurfaceID sid) { 2434 return INVALID_OPERATION; 2435} 2436status_t UserClient::setState(int32_t count, const layer_state_t* states) { 2437 return INVALID_OPERATION; 2438} 2439 2440// --------------------------------------------------------------------------- 2441 2442GraphicPlane::GraphicPlane() 2443 : mHw(0) 2444{ 2445} 2446 2447GraphicPlane::~GraphicPlane() { 2448 delete mHw; 2449} 2450 2451bool GraphicPlane::initialized() const { 2452 return mHw ? true : false; 2453} 2454 2455int GraphicPlane::getWidth() const { 2456 return mWidth; 2457} 2458 2459int GraphicPlane::getHeight() const { 2460 return mHeight; 2461} 2462 2463void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2464{ 2465 mHw = hw; 2466 2467 // initialize the display orientation transform. 2468 // it's a constant that should come from the display driver. 2469 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2470 char property[PROPERTY_VALUE_MAX]; 2471 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2472 //displayOrientation 2473 switch (atoi(property)) { 2474 case 90: 2475 displayOrientation = ISurfaceComposer::eOrientation90; 2476 break; 2477 case 270: 2478 displayOrientation = ISurfaceComposer::eOrientation270; 2479 break; 2480 } 2481 } 2482 2483 const float w = hw->getWidth(); 2484 const float h = hw->getHeight(); 2485 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2486 &mDisplayTransform); 2487 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2488 mDisplayWidth = h; 2489 mDisplayHeight = w; 2490 } else { 2491 mDisplayWidth = w; 2492 mDisplayHeight = h; 2493 } 2494 2495 setOrientation(ISurfaceComposer::eOrientationDefault); 2496} 2497 2498status_t GraphicPlane::orientationToTransfrom( 2499 int orientation, int w, int h, Transform* tr) 2500{ 2501 uint32_t flags = 0; 2502 switch (orientation) { 2503 case ISurfaceComposer::eOrientationDefault: 2504 flags = Transform::ROT_0; 2505 break; 2506 case ISurfaceComposer::eOrientation90: 2507 flags = Transform::ROT_90; 2508 break; 2509 case ISurfaceComposer::eOrientation180: 2510 flags = Transform::ROT_180; 2511 break; 2512 case ISurfaceComposer::eOrientation270: 2513 flags = Transform::ROT_270; 2514 break; 2515 default: 2516 return BAD_VALUE; 2517 } 2518 tr->set(flags, w, h); 2519 return NO_ERROR; 2520} 2521 2522status_t GraphicPlane::setOrientation(int orientation) 2523{ 2524 // If the rotation can be handled in hardware, this is where 2525 // the magic should happen. 2526 2527 const DisplayHardware& hw(displayHardware()); 2528 const float w = mDisplayWidth; 2529 const float h = mDisplayHeight; 2530 mWidth = int(w); 2531 mHeight = int(h); 2532 2533 Transform orientationTransform; 2534 GraphicPlane::orientationToTransfrom(orientation, w, h, 2535 &orientationTransform); 2536 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2537 mWidth = int(h); 2538 mHeight = int(w); 2539 } 2540 2541 mOrientation = orientation; 2542 mGlobalTransform = mDisplayTransform * orientationTransform; 2543 return NO_ERROR; 2544} 2545 2546const DisplayHardware& GraphicPlane::displayHardware() const { 2547 return *mHw; 2548} 2549 2550DisplayHardware& GraphicPlane::editDisplayHardware() { 2551 return *mHw; 2552} 2553 2554const Transform& GraphicPlane::transform() const { 2555 return mGlobalTransform; 2556} 2557 2558EGLDisplay GraphicPlane::getEGLDisplay() const { 2559 return mHw->getEGLDisplay(); 2560} 2561 2562// --------------------------------------------------------------------------- 2563 2564}; // namespace android 2565