SurfaceFlinger.cpp revision 74c40c0a273dbfd7d10617c4cc1b0c066bfc812e
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdlib.h> 18#include <stdio.h> 19#include <stdint.h> 20#include <unistd.h> 21#include <fcntl.h> 22#include <errno.h> 23#include <math.h> 24#include <limits.h> 25#include <sys/types.h> 26#include <sys/stat.h> 27#include <sys/ioctl.h> 28 29#include <cutils/log.h> 30#include <cutils/properties.h> 31 32#include <binder/IPCThreadState.h> 33#include <binder/IServiceManager.h> 34#include <binder/MemoryHeapBase.h> 35 36#include <utils/String8.h> 37#include <utils/String16.h> 38#include <utils/StopWatch.h> 39 40#include <ui/GraphicBufferAllocator.h> 41#include <ui/GraphicLog.h> 42#include <ui/PixelFormat.h> 43 44#include <pixelflinger/pixelflinger.h> 45#include <GLES/gl.h> 46 47#include "clz.h" 48#include "GLExtensions.h" 49#include "Layer.h" 50#include "LayerBlur.h" 51#include "LayerBuffer.h" 52#include "LayerDim.h" 53#include "SurfaceFlinger.h" 54 55#include "DisplayHardware/DisplayHardware.h" 56#include "DisplayHardware/HWComposer.h" 57 58/* ideally AID_GRAPHICS would be in a semi-public header 59 * or there would be a way to map a user/group name to its id 60 */ 61#ifndef AID_GRAPHICS 62#define AID_GRAPHICS 1003 63#endif 64 65#define DISPLAY_COUNT 1 66 67namespace android { 68// --------------------------------------------------------------------------- 69 70SurfaceFlinger::SurfaceFlinger() 71 : BnSurfaceComposer(), Thread(false), 72 mTransactionFlags(0), 73 mTransactionCount(0), 74 mResizeTransationPending(false), 75 mLayersRemoved(false), 76 mBootTime(systemTime()), 77 mHardwareTest("android.permission.HARDWARE_TEST"), 78 mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"), 79 mReadFramebuffer("android.permission.READ_FRAME_BUFFER"), 80 mDump("android.permission.DUMP"), 81 mVisibleRegionsDirty(false), 82 mHwWorkListDirty(false), 83 mDeferReleaseConsole(false), 84 mFreezeDisplay(false), 85 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 121overlay_control_device_t* SurfaceFlinger::getOverlayEngine() const 122{ 123 return graphicPlane(0).displayHardware().getOverlayEngine(); 124} 125 126sp<IMemoryHeap> SurfaceFlinger::getCblk() const 127{ 128 return mServerHeap; 129} 130 131sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 132{ 133 sp<ISurfaceComposerClient> bclient; 134 sp<Client> client(new Client(this)); 135 status_t err = client->initCheck(); 136 if (err == NO_ERROR) { 137 bclient = client; 138 } 139 return bclient; 140} 141 142sp<ISurfaceComposerClient> SurfaceFlinger::createClientConnection() 143{ 144 sp<ISurfaceComposerClient> bclient; 145 sp<UserClient> client(new UserClient(this)); 146 status_t err = client->initCheck(); 147 if (err == NO_ERROR) { 148 bclient = client; 149 } 150 return bclient; 151} 152 153 154const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 155{ 156 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 157 const GraphicPlane& plane(mGraphicPlanes[dpy]); 158 return plane; 159} 160 161GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 162{ 163 return const_cast<GraphicPlane&>( 164 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 165} 166 167void SurfaceFlinger::bootFinished() 168{ 169 const nsecs_t now = systemTime(); 170 const nsecs_t duration = now - mBootTime; 171 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 172 mBootFinished = true; 173 property_set("ctl.stop", "bootanim"); 174} 175 176void SurfaceFlinger::onFirstRef() 177{ 178 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 179 180 // Wait for the main thread to be done with its initialization 181 mReadyToRunBarrier.wait(); 182} 183 184static inline uint16_t pack565(int r, int g, int b) { 185 return (r<<11)|(g<<5)|b; 186} 187 188status_t SurfaceFlinger::readyToRun() 189{ 190 LOGI( "SurfaceFlinger's main thread ready to run. " 191 "Initializing graphics H/W..."); 192 193 // we only support one display currently 194 int dpy = 0; 195 196 { 197 // initialize the main display 198 GraphicPlane& plane(graphicPlane(dpy)); 199 DisplayHardware* const hw = new DisplayHardware(this, dpy); 200 plane.setDisplayHardware(hw); 201 } 202 203 // create the shared control-block 204 mServerHeap = new MemoryHeapBase(4096, 205 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 206 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 207 208 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 209 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 210 211 new(mServerCblk) surface_flinger_cblk_t; 212 213 // initialize primary screen 214 // (other display should be initialized in the same manner, but 215 // asynchronously, as they could come and go. None of this is supported 216 // yet). 217 const GraphicPlane& plane(graphicPlane(dpy)); 218 const DisplayHardware& hw = plane.displayHardware(); 219 const uint32_t w = hw.getWidth(); 220 const uint32_t h = hw.getHeight(); 221 const uint32_t f = hw.getFormat(); 222 hw.makeCurrent(); 223 224 // initialize the shared control block 225 mServerCblk->connected |= 1<<dpy; 226 display_cblk_t* dcblk = mServerCblk->displays + dpy; 227 memset(dcblk, 0, sizeof(display_cblk_t)); 228 dcblk->w = plane.getWidth(); 229 dcblk->h = plane.getHeight(); 230 dcblk->format = f; 231 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 232 dcblk->xdpi = hw.getDpiX(); 233 dcblk->ydpi = hw.getDpiY(); 234 dcblk->fps = hw.getRefreshRate(); 235 dcblk->density = hw.getDensity(); 236 237 // Initialize OpenGL|ES 238 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 239 glPixelStorei(GL_PACK_ALIGNMENT, 4); 240 glEnableClientState(GL_VERTEX_ARRAY); 241 glEnable(GL_SCISSOR_TEST); 242 glShadeModel(GL_FLAT); 243 glDisable(GL_DITHER); 244 glDisable(GL_CULL_FACE); 245 246 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 247 const uint16_t g1 = pack565(0x17,0x2f,0x17); 248 const uint16_t textureData[4] = { g0, g1, g1, g0 }; 249 glGenTextures(1, &mWormholeTexName); 250 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 251 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 252 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 253 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 254 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 255 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 256 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, textureData); 257 258 glViewport(0, 0, w, h); 259 glMatrixMode(GL_PROJECTION); 260 glLoadIdentity(); 261 glOrthof(0, w, h, 0, 0, 1); 262 263 LayerDim::initDimmer(this, w, h); 264 265 mReadyToRunBarrier.open(); 266 267 /* 268 * We're now ready to accept clients... 269 */ 270 271 // start boot animation 272 property_set("ctl.start", "bootanim"); 273 274 return NO_ERROR; 275} 276 277// ---------------------------------------------------------------------------- 278#if 0 279#pragma mark - 280#pragma mark Events Handler 281#endif 282 283void SurfaceFlinger::waitForEvent() 284{ 285 while (true) { 286 nsecs_t timeout = -1; 287 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 288 if (UNLIKELY(isFrozen())) { 289 // wait 5 seconds 290 const nsecs_t now = systemTime(); 291 if (mFreezeDisplayTime == 0) { 292 mFreezeDisplayTime = now; 293 } 294 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 295 timeout = waitTime>0 ? waitTime : 0; 296 } 297 298 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 299 300 // see if we timed out 301 if (isFrozen()) { 302 const nsecs_t now = systemTime(); 303 nsecs_t frozenTime = (now - mFreezeDisplayTime); 304 if (frozenTime >= freezeDisplayTimeout) { 305 // we timed out and are still frozen 306 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 307 mFreezeDisplay, mFreezeCount); 308 mFreezeDisplayTime = 0; 309 mFreezeCount = 0; 310 mFreezeDisplay = false; 311 } 312 } 313 314 if (msg != 0) { 315 switch (msg->what) { 316 case MessageQueue::INVALIDATE: 317 // invalidate message, just return to the main loop 318 return; 319 } 320 } 321 } 322} 323 324void SurfaceFlinger::signalEvent() { 325 mEventQueue.invalidate(); 326} 327 328void SurfaceFlinger::signal() const { 329 // this is the IPC call 330 const_cast<SurfaceFlinger*>(this)->signalEvent(); 331} 332 333status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 334 nsecs_t reltime, uint32_t flags) 335{ 336 return mEventQueue.postMessage(msg, reltime, flags); 337} 338 339status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 340 nsecs_t reltime, uint32_t flags) 341{ 342 status_t res = mEventQueue.postMessage(msg, reltime, flags); 343 if (res == NO_ERROR) { 344 msg->wait(); 345 } 346 return res; 347} 348 349// ---------------------------------------------------------------------------- 350#if 0 351#pragma mark - 352#pragma mark Main loop 353#endif 354 355bool SurfaceFlinger::threadLoop() 356{ 357 waitForEvent(); 358 359 // check for transactions 360 if (UNLIKELY(mConsoleSignals)) { 361 handleConsoleEvents(); 362 } 363 364 if (LIKELY(mTransactionCount == 0)) { 365 // if we're in a global transaction, don't do anything. 366 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 367 uint32_t transactionFlags = getTransactionFlags(mask); 368 if (LIKELY(transactionFlags)) { 369 handleTransaction(transactionFlags); 370 } 371 } 372 373 // post surfaces (if needed) 374 handlePageFlip(); 375 376 if (UNLIKELY(mHwWorkListDirty)) { 377 // build the h/w work list 378 handleWorkList(); 379 } 380 381 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 382 if (LIKELY(hw.canDraw() && !isFrozen())) { 383 // repaint the framebuffer (if needed) 384 385 const int index = hw.getCurrentBufferIndex(); 386 GraphicLog& logger(GraphicLog::getInstance()); 387 388 logger.log(GraphicLog::SF_REPAINT, index); 389 handleRepaint(); 390 391 // inform the h/w that we're done compositing 392 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 393 hw.compositionComplete(); 394 395 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 396 postFramebuffer(); 397 398 logger.log(GraphicLog::SF_UNLOCK_CLIENTS, index); 399 unlockClients(); 400 401 logger.log(GraphicLog::SF_REPAINT_DONE, index); 402 } else { 403 // pretend we did the post 404 unlockClients(); 405 usleep(16667); // 60 fps period 406 } 407 return true; 408} 409 410void SurfaceFlinger::postFramebuffer() 411{ 412 if (!mInvalidRegion.isEmpty()) { 413 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 414 const nsecs_t now = systemTime(); 415 mDebugInSwapBuffers = now; 416 hw.flip(mInvalidRegion); 417 mLastSwapBufferTime = systemTime() - now; 418 mDebugInSwapBuffers = 0; 419 mInvalidRegion.clear(); 420 } 421} 422 423void SurfaceFlinger::handleConsoleEvents() 424{ 425 // something to do with the console 426 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 427 428 int what = android_atomic_and(0, &mConsoleSignals); 429 if (what & eConsoleAcquired) { 430 hw.acquireScreen(); 431 } 432 433 if (mDeferReleaseConsole && hw.canDraw()) { 434 // We got the release signal before the acquire signal 435 mDeferReleaseConsole = false; 436 hw.releaseScreen(); 437 } 438 439 if (what & eConsoleReleased) { 440 if (hw.canDraw()) { 441 hw.releaseScreen(); 442 } else { 443 mDeferReleaseConsole = true; 444 } 445 } 446 447 mDirtyRegion.set(hw.bounds()); 448} 449 450void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 451{ 452 Vector< sp<LayerBase> > ditchedLayers; 453 454 /* 455 * Perform and commit the transaction 456 */ 457 458 { // scope for the lock 459 Mutex::Autolock _l(mStateLock); 460 const nsecs_t now = systemTime(); 461 mDebugInTransaction = now; 462 handleTransactionLocked(transactionFlags, ditchedLayers); 463 mLastTransactionTime = systemTime() - now; 464 mDebugInTransaction = 0; 465 mHwWorkListDirty = true; 466 // here the transaction has been committed 467 } 468 469 /* 470 * Clean-up all layers that went away 471 * (do this without the lock held) 472 */ 473 474 const size_t count = ditchedLayers.size(); 475 for (size_t i=0 ; i<count ; i++) { 476 if (ditchedLayers[i] != 0) { 477 //LOGD("ditching layer %p", ditchedLayers[i].get()); 478 ditchedLayers[i]->ditch(); 479 } 480 } 481} 482 483void SurfaceFlinger::handleTransactionLocked( 484 uint32_t transactionFlags, Vector< sp<LayerBase> >& ditchedLayers) 485{ 486 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 487 const size_t count = currentLayers.size(); 488 489 /* 490 * Traversal of the children 491 * (perform the transaction for each of them if needed) 492 */ 493 494 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 495 if (layersNeedTransaction) { 496 for (size_t i=0 ; i<count ; i++) { 497 const sp<LayerBase>& layer = currentLayers[i]; 498 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 499 if (!trFlags) continue; 500 501 const uint32_t flags = layer->doTransaction(0); 502 if (flags & Layer::eVisibleRegion) 503 mVisibleRegionsDirty = true; 504 } 505 } 506 507 /* 508 * Perform our own transaction if needed 509 */ 510 511 if (transactionFlags & eTransactionNeeded) { 512 if (mCurrentState.orientation != mDrawingState.orientation) { 513 // the orientation has changed, recompute all visible regions 514 // and invalidate everything. 515 516 const int dpy = 0; 517 const int orientation = mCurrentState.orientation; 518 const uint32_t type = mCurrentState.orientationType; 519 GraphicPlane& plane(graphicPlane(dpy)); 520 plane.setOrientation(orientation); 521 522 // update the shared control block 523 const DisplayHardware& hw(plane.displayHardware()); 524 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 525 dcblk->orientation = orientation; 526 dcblk->w = plane.getWidth(); 527 dcblk->h = plane.getHeight(); 528 529 mVisibleRegionsDirty = true; 530 mDirtyRegion.set(hw.bounds()); 531 } 532 533 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 534 // freezing or unfreezing the display -> trigger animation if needed 535 mFreezeDisplay = mCurrentState.freezeDisplay; 536 if (mFreezeDisplay) 537 mFreezeDisplayTime = 0; 538 } 539 540 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 541 // layers have been added 542 mVisibleRegionsDirty = true; 543 } 544 545 // some layers might have been removed, so 546 // we need to update the regions they're exposing. 547 if (mLayersRemoved) { 548 mLayersRemoved = false; 549 mVisibleRegionsDirty = true; 550 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 551 const size_t count = previousLayers.size(); 552 for (size_t i=0 ; i<count ; i++) { 553 const sp<LayerBase>& layer(previousLayers[i]); 554 if (currentLayers.indexOf( layer ) < 0) { 555 // this layer is not visible anymore 556 ditchedLayers.add(layer); 557 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 558 } 559 } 560 } 561 } 562 563 commitTransaction(); 564} 565 566sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 567{ 568 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 569} 570 571void SurfaceFlinger::computeVisibleRegions( 572 LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 573{ 574 const GraphicPlane& plane(graphicPlane(0)); 575 const Transform& planeTransform(plane.transform()); 576 const DisplayHardware& hw(plane.displayHardware()); 577 const Region screenRegion(hw.bounds()); 578 579 Region aboveOpaqueLayers; 580 Region aboveCoveredLayers; 581 Region dirty; 582 583 bool secureFrameBuffer = false; 584 585 size_t i = currentLayers.size(); 586 while (i--) { 587 const sp<LayerBase>& layer = currentLayers[i]; 588 layer->validateVisibility(planeTransform); 589 590 // start with the whole surface at its current location 591 const Layer::State& s(layer->drawingState()); 592 593 /* 594 * opaqueRegion: area of a surface that is fully opaque. 595 */ 596 Region opaqueRegion; 597 598 /* 599 * visibleRegion: area of a surface that is visible on screen 600 * and not fully transparent. This is essentially the layer's 601 * footprint minus the opaque regions above it. 602 * Areas covered by a translucent surface are considered visible. 603 */ 604 Region visibleRegion; 605 606 /* 607 * coveredRegion: area of a surface that is covered by all 608 * visible regions above it (which includes the translucent areas). 609 */ 610 Region coveredRegion; 611 612 613 // handle hidden surfaces by setting the visible region to empty 614 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 615 const bool translucent = layer->needsBlending(); 616 const Rect bounds(layer->visibleBounds()); 617 visibleRegion.set(bounds); 618 visibleRegion.andSelf(screenRegion); 619 if (!visibleRegion.isEmpty()) { 620 // Remove the transparent area from the visible region 621 if (translucent) { 622 visibleRegion.subtractSelf(layer->transparentRegionScreen); 623 } 624 625 // compute the opaque region 626 const int32_t layerOrientation = layer->getOrientation(); 627 if (s.alpha==255 && !translucent && 628 ((layerOrientation & Transform::ROT_INVALID) == false)) { 629 // the opaque region is the layer's footprint 630 opaqueRegion = visibleRegion; 631 } 632 } 633 } 634 635 // Clip the covered region to the visible region 636 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 637 638 // Update aboveCoveredLayers for next (lower) layer 639 aboveCoveredLayers.orSelf(visibleRegion); 640 641 // subtract the opaque region covered by the layers above us 642 visibleRegion.subtractSelf(aboveOpaqueLayers); 643 644 // compute this layer's dirty region 645 if (layer->contentDirty) { 646 // we need to invalidate the whole region 647 dirty = visibleRegion; 648 // as well, as the old visible region 649 dirty.orSelf(layer->visibleRegionScreen); 650 layer->contentDirty = false; 651 } else { 652 /* compute the exposed region: 653 * the exposed region consists of two components: 654 * 1) what's VISIBLE now and was COVERED before 655 * 2) what's EXPOSED now less what was EXPOSED before 656 * 657 * note that (1) is conservative, we start with the whole 658 * visible region but only keep what used to be covered by 659 * something -- which mean it may have been exposed. 660 * 661 * (2) handles areas that were not covered by anything but got 662 * exposed because of a resize. 663 */ 664 const Region newExposed = visibleRegion - coveredRegion; 665 const Region oldVisibleRegion = layer->visibleRegionScreen; 666 const Region oldCoveredRegion = layer->coveredRegionScreen; 667 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 668 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 669 } 670 dirty.subtractSelf(aboveOpaqueLayers); 671 672 // accumulate to the screen dirty region 673 dirtyRegion.orSelf(dirty); 674 675 // Update aboveOpaqueLayers for next (lower) layer 676 aboveOpaqueLayers.orSelf(opaqueRegion); 677 678 // Store the visible region is screen space 679 layer->setVisibleRegion(visibleRegion); 680 layer->setCoveredRegion(coveredRegion); 681 682 // If a secure layer is partially visible, lock-down the screen! 683 if (layer->isSecure() && !visibleRegion.isEmpty()) { 684 secureFrameBuffer = true; 685 } 686 } 687 688 // invalidate the areas where a layer was removed 689 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 690 mDirtyRegionRemovedLayer.clear(); 691 692 mSecureFrameBuffer = secureFrameBuffer; 693 opaqueRegion = aboveOpaqueLayers; 694} 695 696 697void SurfaceFlinger::commitTransaction() 698{ 699 mDrawingState = mCurrentState; 700 mResizeTransationPending = false; 701 mTransactionCV.broadcast(); 702} 703 704void SurfaceFlinger::handlePageFlip() 705{ 706 bool visibleRegions = mVisibleRegionsDirty; 707 LayerVector& currentLayers( 708 const_cast<LayerVector&>(mDrawingState.layersSortedByZ)); 709 visibleRegions |= lockPageFlip(currentLayers); 710 711 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 712 const Region screenRegion(hw.bounds()); 713 if (visibleRegions) { 714 Region opaqueRegion; 715 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 716 717 /* 718 * rebuild the visible layer list 719 */ 720 mVisibleLayersSortedByZ.clear(); 721 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 722 size_t count = currentLayers.size(); 723 mVisibleLayersSortedByZ.setCapacity(count); 724 for (size_t i=0 ; i<count ; i++) { 725 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 726 mVisibleLayersSortedByZ.add(currentLayers[i]); 727 } 728 729 mWormholeRegion = screenRegion.subtract(opaqueRegion); 730 mVisibleRegionsDirty = false; 731 mHwWorkListDirty = true; 732 } 733 734 unlockPageFlip(currentLayers); 735 mDirtyRegion.andSelf(screenRegion); 736} 737 738bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 739{ 740 bool recomputeVisibleRegions = false; 741 size_t count = currentLayers.size(); 742 sp<LayerBase> const* layers = currentLayers.array(); 743 for (size_t i=0 ; i<count ; i++) { 744 const sp<LayerBase>& layer(layers[i]); 745 layer->lockPageFlip(recomputeVisibleRegions); 746 } 747 return recomputeVisibleRegions; 748} 749 750void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 751{ 752 const GraphicPlane& plane(graphicPlane(0)); 753 const Transform& planeTransform(plane.transform()); 754 size_t count = currentLayers.size(); 755 sp<LayerBase> const* layers = currentLayers.array(); 756 for (size_t i=0 ; i<count ; i++) { 757 const sp<LayerBase>& layer(layers[i]); 758 layer->unlockPageFlip(planeTransform, mDirtyRegion); 759 } 760} 761 762void SurfaceFlinger::handleWorkList() 763{ 764 mHwWorkListDirty = false; 765 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 766 if (hwc.initCheck() == NO_ERROR) { 767 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 768 const size_t count = currentLayers.size(); 769 hwc.createWorkList(count); 770 hwc_layer_t* const cur(hwc.getLayers()); 771 for (size_t i=0 ; cur && i<count ; i++) { 772 currentLayers[i]->setGeometry(&cur[i]); 773 if (mDebugDisableHWC) { 774 cur[i].compositionType = HWC_FRAMEBUFFER; 775 cur[i].flags |= HWC_SKIP_LAYER; 776 } 777 } 778 } 779} 780 781void SurfaceFlinger::handleRepaint() 782{ 783 // compute the invalid region 784 mInvalidRegion.orSelf(mDirtyRegion); 785 if (mInvalidRegion.isEmpty()) { 786 // nothing to do 787 return; 788 } 789 790 if (UNLIKELY(mDebugRegion)) { 791 debugFlashRegions(); 792 } 793 794 // set the frame buffer 795 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 796 glMatrixMode(GL_MODELVIEW); 797 glLoadIdentity(); 798 799 uint32_t flags = hw.getFlags(); 800 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 801 (flags & DisplayHardware::BUFFER_PRESERVED)) 802 { 803 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 804 // takes a rectangle, we must make sure to update that whole 805 // rectangle in that case 806 if (flags & DisplayHardware::SWAP_RECTANGLE) { 807 // TODO: we really should be able to pass a region to 808 // SWAP_RECTANGLE so that we don't have to redraw all this. 809 mDirtyRegion.set(mInvalidRegion.bounds()); 810 } else { 811 // in the BUFFER_PRESERVED case, obviously, we can update only 812 // what's needed and nothing more. 813 // NOTE: this is NOT a common case, as preserving the backbuffer 814 // is costly and usually involves copying the whole update back. 815 } 816 } else { 817 if (flags & DisplayHardware::PARTIAL_UPDATES) { 818 // We need to redraw the rectangle that will be updated 819 // (pushed to the framebuffer). 820 // This is needed because PARTIAL_UPDATES only takes one 821 // rectangle instead of a region (see DisplayHardware::flip()) 822 mDirtyRegion.set(mInvalidRegion.bounds()); 823 } else { 824 // we need to redraw everything (the whole screen) 825 mDirtyRegion.set(hw.bounds()); 826 mInvalidRegion = mDirtyRegion; 827 } 828 } 829 830 // compose all surfaces 831 composeSurfaces(mDirtyRegion); 832 833 // clear the dirty regions 834 mDirtyRegion.clear(); 835} 836 837void SurfaceFlinger::composeSurfaces(const Region& dirty) 838{ 839 if (UNLIKELY(!mWormholeRegion.isEmpty())) { 840 // should never happen unless the window manager has a bug 841 // draw something... 842 drawWormhole(); 843 } 844 845 status_t err = NO_ERROR; 846 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 847 size_t count = layers.size(); 848 849 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 850 HWComposer& hwc(hw.getHwComposer()); 851 hwc_layer_t* const cur(hwc.getLayers()); 852 853 LOGE_IF(cur && hwc.getNumLayers() != count, 854 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 855 hwc.getNumLayers(), count); 856 857 // just to be extra-safe, use the smallest count 858 if (hwc.initCheck() == NO_ERROR) { 859 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 860 } 861 862 /* 863 * update the per-frame h/w composer data for each layer 864 * and build the transparent region of the FB 865 */ 866 Region transparent; 867 if (cur) { 868 for (size_t i=0 ; i<count ; i++) { 869 const sp<LayerBase>& layer(layers[i]); 870 layer->setPerFrameData(&cur[i]); 871 if (cur[i].hints & HWC_HINT_CLEAR_FB) { 872 if (!(layer->needsBlending())) { 873 transparent.orSelf(layer->visibleRegionScreen); 874 } 875 } 876 } 877 err = hwc.prepare(); 878 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 879 } 880 881 /* 882 * clear the area of the FB that need to be transparent 883 */ 884 transparent.andSelf(dirty); 885 if (!transparent.isEmpty()) { 886 glClearColor(0,0,0,0); 887 Region::const_iterator it = transparent.begin(); 888 Region::const_iterator const end = transparent.end(); 889 const int32_t height = hw.getHeight(); 890 while (it != end) { 891 const Rect& r(*it++); 892 const GLint sy = height - (r.top + r.height()); 893 glScissor(r.left, sy, r.width(), r.height()); 894 glClear(GL_COLOR_BUFFER_BIT); 895 } 896 } 897 898 899 /* 900 * and then, render the layers targeted at the framebuffer 901 */ 902 for (size_t i=0 ; i<count ; i++) { 903 if (cur) { 904 if ((cur[i].compositionType != HWC_FRAMEBUFFER) && 905 !(cur[i].flags & HWC_SKIP_LAYER)) { 906 // skip layers handled by the HAL 907 continue; 908 } 909 } 910 911 const sp<LayerBase>& layer(layers[i]); 912 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 913 if (!clip.isEmpty()) { 914 layer->draw(clip); 915 } 916 } 917} 918 919void SurfaceFlinger::unlockClients() 920{ 921 const LayerVector& drawingLayers(mDrawingState.layersSortedByZ); 922 const size_t count = drawingLayers.size(); 923 sp<LayerBase> const* const layers = drawingLayers.array(); 924 for (size_t i=0 ; i<count ; ++i) { 925 const sp<LayerBase>& layer = layers[i]; 926 layer->finishPageFlip(); 927 } 928} 929 930void SurfaceFlinger::debugFlashRegions() 931{ 932 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 933 const uint32_t flags = hw.getFlags(); 934 935 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 936 (flags & DisplayHardware::BUFFER_PRESERVED))) { 937 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 938 mDirtyRegion.bounds() : hw.bounds()); 939 composeSurfaces(repaint); 940 } 941 942 TextureManager::deactivateTextures(); 943 944 glDisable(GL_BLEND); 945 glDisable(GL_DITHER); 946 glDisable(GL_SCISSOR_TEST); 947 948 static int toggle = 0; 949 toggle = 1 - toggle; 950 if (toggle) { 951 glColor4f(1, 0, 1, 1); 952 } else { 953 glColor4f(1, 1, 0, 1); 954 } 955 956 Region::const_iterator it = mDirtyRegion.begin(); 957 Region::const_iterator const end = mDirtyRegion.end(); 958 while (it != end) { 959 const Rect& r = *it++; 960 GLfloat vertices[][2] = { 961 { r.left, r.top }, 962 { r.left, r.bottom }, 963 { r.right, r.bottom }, 964 { r.right, r.top } 965 }; 966 glVertexPointer(2, GL_FLOAT, 0, vertices); 967 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 968 } 969 970 if (mInvalidRegion.isEmpty()) { 971 mDirtyRegion.dump("mDirtyRegion"); 972 mInvalidRegion.dump("mInvalidRegion"); 973 } 974 hw.flip(mInvalidRegion); 975 976 if (mDebugRegion > 1) 977 usleep(mDebugRegion * 1000); 978 979 glEnable(GL_SCISSOR_TEST); 980 //mDirtyRegion.dump("mDirtyRegion"); 981} 982 983void SurfaceFlinger::drawWormhole() const 984{ 985 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 986 if (region.isEmpty()) 987 return; 988 989 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 990 const int32_t width = hw.getWidth(); 991 const int32_t height = hw.getHeight(); 992 993 glDisable(GL_BLEND); 994 glDisable(GL_DITHER); 995 996 if (LIKELY(!mDebugBackground)) { 997 glClearColor(0,0,0,0); 998 Region::const_iterator it = region.begin(); 999 Region::const_iterator const end = region.end(); 1000 while (it != end) { 1001 const Rect& r = *it++; 1002 const GLint sy = height - (r.top + r.height()); 1003 glScissor(r.left, sy, r.width(), r.height()); 1004 glClear(GL_COLOR_BUFFER_BIT); 1005 } 1006 } else { 1007 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1008 { width, height }, { 0, height } }; 1009 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1010 glVertexPointer(2, GL_SHORT, 0, vertices); 1011 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1012 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1013#if defined(GL_OES_EGL_image_external) 1014 if (GLExtensions::getInstance().haveTextureExternal()) { 1015 glDisable(GL_TEXTURE_EXTERNAL_OES); 1016 } 1017#endif 1018 glEnable(GL_TEXTURE_2D); 1019 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1020 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1021 glMatrixMode(GL_TEXTURE); 1022 glLoadIdentity(); 1023 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1024 Region::const_iterator it = region.begin(); 1025 Region::const_iterator const end = region.end(); 1026 while (it != end) { 1027 const Rect& r = *it++; 1028 const GLint sy = height - (r.top + r.height()); 1029 glScissor(r.left, sy, r.width(), r.height()); 1030 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1031 } 1032 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1033 } 1034} 1035 1036void SurfaceFlinger::debugShowFPS() const 1037{ 1038 static int mFrameCount; 1039 static int mLastFrameCount = 0; 1040 static nsecs_t mLastFpsTime = 0; 1041 static float mFps = 0; 1042 mFrameCount++; 1043 nsecs_t now = systemTime(); 1044 nsecs_t diff = now - mLastFpsTime; 1045 if (diff > ms2ns(250)) { 1046 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1047 mLastFpsTime = now; 1048 mLastFrameCount = mFrameCount; 1049 } 1050 // XXX: mFPS has the value we want 1051 } 1052 1053status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1054{ 1055 Mutex::Autolock _l(mStateLock); 1056 addLayer_l(layer); 1057 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1058 return NO_ERROR; 1059} 1060 1061status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1062{ 1063 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1064 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1065} 1066 1067ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1068 const sp<LayerBaseClient>& lbc) 1069{ 1070 Mutex::Autolock _l(mStateLock); 1071 1072 // attach this layer to the client 1073 ssize_t name = client->attachLayer(lbc); 1074 1075 // add this layer to the current state list 1076 addLayer_l(lbc); 1077 1078 return name; 1079} 1080 1081status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1082{ 1083 Mutex::Autolock _l(mStateLock); 1084 status_t err = purgatorizeLayer_l(layer); 1085 if (err == NO_ERROR) 1086 setTransactionFlags(eTransactionNeeded); 1087 return err; 1088} 1089 1090status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1091{ 1092 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1093 if (lbc != 0) { 1094 mLayerMap.removeItem( lbc->getSurface()->asBinder() ); 1095 } 1096 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1097 if (index >= 0) { 1098 mLayersRemoved = true; 1099 return NO_ERROR; 1100 } 1101 return status_t(index); 1102} 1103 1104status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1105{ 1106 // remove the layer from the main list (through a transaction). 1107 ssize_t err = removeLayer_l(layerBase); 1108 1109 layerBase->onRemoved(); 1110 1111 // it's possible that we don't find a layer, because it might 1112 // have been destroyed already -- this is not technically an error 1113 // from the user because there is a race between Client::destroySurface(), 1114 // ~Client() and ~ISurface(). 1115 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1116} 1117 1118status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1119{ 1120 layer->forceVisibilityTransaction(); 1121 setTransactionFlags(eTraversalNeeded); 1122 return NO_ERROR; 1123} 1124 1125uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1126{ 1127 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1128} 1129 1130uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1131{ 1132 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1133 if ((old & flags)==0) { // wake the server up 1134 signalEvent(); 1135 } 1136 return old; 1137} 1138 1139void SurfaceFlinger::openGlobalTransaction() 1140{ 1141 android_atomic_inc(&mTransactionCount); 1142} 1143 1144void SurfaceFlinger::closeGlobalTransaction() 1145{ 1146 if (android_atomic_dec(&mTransactionCount) == 1) { 1147 signalEvent(); 1148 1149 // if there is a transaction with a resize, wait for it to 1150 // take effect before returning. 1151 Mutex::Autolock _l(mStateLock); 1152 while (mResizeTransationPending) { 1153 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1154 if (CC_UNLIKELY(err != NO_ERROR)) { 1155 // just in case something goes wrong in SF, return to the 1156 // called after a few seconds. 1157 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1158 mResizeTransationPending = false; 1159 break; 1160 } 1161 } 1162 } 1163} 1164 1165status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1166{ 1167 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1168 return BAD_VALUE; 1169 1170 Mutex::Autolock _l(mStateLock); 1171 mCurrentState.freezeDisplay = 1; 1172 setTransactionFlags(eTransactionNeeded); 1173 1174 // flags is intended to communicate some sort of animation behavior 1175 // (for instance fading) 1176 return NO_ERROR; 1177} 1178 1179status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1180{ 1181 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1182 return BAD_VALUE; 1183 1184 Mutex::Autolock _l(mStateLock); 1185 mCurrentState.freezeDisplay = 0; 1186 setTransactionFlags(eTransactionNeeded); 1187 1188 // flags is intended to communicate some sort of animation behavior 1189 // (for instance fading) 1190 return NO_ERROR; 1191} 1192 1193int SurfaceFlinger::setOrientation(DisplayID dpy, 1194 int orientation, uint32_t flags) 1195{ 1196 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1197 return BAD_VALUE; 1198 1199 Mutex::Autolock _l(mStateLock); 1200 if (mCurrentState.orientation != orientation) { 1201 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1202 mCurrentState.orientationType = flags; 1203 mCurrentState.orientation = orientation; 1204 setTransactionFlags(eTransactionNeeded); 1205 mTransactionCV.wait(mStateLock); 1206 } else { 1207 orientation = BAD_VALUE; 1208 } 1209 } 1210 return orientation; 1211} 1212 1213sp<ISurface> SurfaceFlinger::createSurface(const sp<Client>& client, int pid, 1214 const String8& name, ISurfaceComposerClient::surface_data_t* params, 1215 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1216 uint32_t flags) 1217{ 1218 sp<LayerBaseClient> layer; 1219 sp<LayerBaseClient::Surface> surfaceHandle; 1220 1221 if (int32_t(w|h) < 0) { 1222 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1223 int(w), int(h)); 1224 return surfaceHandle; 1225 } 1226 1227 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1228 sp<Layer> normalLayer; 1229 switch (flags & eFXSurfaceMask) { 1230 case eFXSurfaceNormal: 1231#if HAS_PUSH_BUFFERS 1232 if (UNLIKELY(flags & ePushBuffers)) { 1233 layer = createPushBuffersSurface(client, d, w, h, flags); 1234 } else 1235#endif 1236 { 1237 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1238 layer = normalLayer; 1239 } 1240 break; 1241 case eFXSurfaceBlur: 1242 layer = createBlurSurface(client, d, w, h, flags); 1243 break; 1244 case eFXSurfaceDim: 1245 layer = createDimSurface(client, d, w, h, flags); 1246 break; 1247 } 1248 1249 if (layer != 0) { 1250 layer->initStates(w, h, flags); 1251 layer->setName(name); 1252 ssize_t token = addClientLayer(client, layer); 1253 1254 surfaceHandle = layer->getSurface(); 1255 if (surfaceHandle != 0) { 1256 params->token = token; 1257 params->identity = surfaceHandle->getIdentity(); 1258 params->width = w; 1259 params->height = h; 1260 params->format = format; 1261 if (normalLayer != 0) { 1262 Mutex::Autolock _l(mStateLock); 1263 mLayerMap.add(surfaceHandle->asBinder(), normalLayer); 1264 } 1265 } 1266 1267 setTransactionFlags(eTransactionNeeded); 1268 } 1269 1270 return surfaceHandle; 1271} 1272 1273sp<Layer> SurfaceFlinger::createNormalSurface( 1274 const sp<Client>& client, DisplayID display, 1275 uint32_t w, uint32_t h, uint32_t flags, 1276 PixelFormat& format) 1277{ 1278 // initialize the surfaces 1279 switch (format) { // TODO: take h/w into account 1280 case PIXEL_FORMAT_TRANSPARENT: 1281 case PIXEL_FORMAT_TRANSLUCENT: 1282 format = PIXEL_FORMAT_RGBA_8888; 1283 break; 1284 case PIXEL_FORMAT_OPAQUE: 1285#ifdef NO_RGBX_8888 1286 format = PIXEL_FORMAT_RGB_565; 1287#else 1288 format = PIXEL_FORMAT_RGBX_8888; 1289#endif 1290 break; 1291 } 1292 1293#ifdef NO_RGBX_8888 1294 if (format == PIXEL_FORMAT_RGBX_8888) 1295 format = PIXEL_FORMAT_RGBA_8888; 1296#endif 1297 1298 sp<Layer> layer = new Layer(this, display, client); 1299 status_t err = layer->setBuffers(w, h, format, flags); 1300 if (LIKELY(err != NO_ERROR)) { 1301 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1302 layer.clear(); 1303 } 1304 return layer; 1305} 1306 1307sp<LayerBlur> SurfaceFlinger::createBlurSurface( 1308 const sp<Client>& client, DisplayID display, 1309 uint32_t w, uint32_t h, uint32_t flags) 1310{ 1311 sp<LayerBlur> layer = new LayerBlur(this, display, client); 1312 layer->initStates(w, h, flags); 1313 return layer; 1314} 1315 1316sp<LayerDim> SurfaceFlinger::createDimSurface( 1317 const sp<Client>& client, DisplayID display, 1318 uint32_t w, uint32_t h, uint32_t flags) 1319{ 1320 sp<LayerDim> layer = new LayerDim(this, display, client); 1321 layer->initStates(w, h, flags); 1322 return layer; 1323} 1324 1325sp<LayerBuffer> SurfaceFlinger::createPushBuffersSurface( 1326 const sp<Client>& client, DisplayID display, 1327 uint32_t w, uint32_t h, uint32_t flags) 1328{ 1329 sp<LayerBuffer> layer = new LayerBuffer(this, display, client); 1330 layer->initStates(w, h, flags); 1331 return layer; 1332} 1333 1334status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1335{ 1336 /* 1337 * called by the window manager, when a surface should be marked for 1338 * destruction. 1339 * 1340 * The surface is removed from the current and drawing lists, but placed 1341 * in the purgatory queue, so it's not destroyed right-away (we need 1342 * to wait for all client's references to go away first). 1343 */ 1344 1345 status_t err = NAME_NOT_FOUND; 1346 Mutex::Autolock _l(mStateLock); 1347 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1348 if (layer != 0) { 1349 err = purgatorizeLayer_l(layer); 1350 if (err == NO_ERROR) { 1351 setTransactionFlags(eTransactionNeeded); 1352 } 1353 } 1354 return err; 1355} 1356 1357status_t SurfaceFlinger::destroySurface(const sp<LayerBaseClient>& layer) 1358{ 1359 // called by ~ISurface() when all references are gone 1360 1361 class MessageDestroySurface : public MessageBase { 1362 SurfaceFlinger* flinger; 1363 sp<LayerBaseClient> layer; 1364 public: 1365 MessageDestroySurface( 1366 SurfaceFlinger* flinger, const sp<LayerBaseClient>& layer) 1367 : flinger(flinger), layer(layer) { } 1368 virtual bool handler() { 1369 sp<LayerBaseClient> l(layer); 1370 layer.clear(); // clear it outside of the lock; 1371 Mutex::Autolock _l(flinger->mStateLock); 1372 /* 1373 * remove the layer from the current list -- chances are that it's 1374 * not in the list anyway, because it should have been removed 1375 * already upon request of the client (eg: window manager). 1376 * However, a buggy client could have not done that. 1377 * Since we know we don't have any more clients, we don't need 1378 * to use the purgatory. 1379 */ 1380 status_t err = flinger->removeLayer_l(l); 1381 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1382 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1383 return true; 1384 } 1385 }; 1386 1387 postMessageAsync( new MessageDestroySurface(this, layer) ); 1388 return NO_ERROR; 1389} 1390 1391status_t SurfaceFlinger::setClientState( 1392 const sp<Client>& client, 1393 int32_t count, 1394 const layer_state_t* states) 1395{ 1396 Mutex::Autolock _l(mStateLock); 1397 uint32_t flags = 0; 1398 for (int i=0 ; i<count ; i++) { 1399 const layer_state_t& s(states[i]); 1400 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1401 if (layer != 0) { 1402 const uint32_t what = s.what; 1403 if (what & ePositionChanged) { 1404 if (layer->setPosition(s.x, s.y)) 1405 flags |= eTraversalNeeded; 1406 } 1407 if (what & eLayerChanged) { 1408 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1409 if (layer->setLayer(s.z)) { 1410 mCurrentState.layersSortedByZ.removeAt(idx); 1411 mCurrentState.layersSortedByZ.add(layer); 1412 // we need traversal (state changed) 1413 // AND transaction (list changed) 1414 flags |= eTransactionNeeded|eTraversalNeeded; 1415 } 1416 } 1417 if (what & eSizeChanged) { 1418 if (layer->setSize(s.w, s.h)) { 1419 flags |= eTraversalNeeded; 1420 mResizeTransationPending = true; 1421 } 1422 } 1423 if (what & eAlphaChanged) { 1424 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1425 flags |= eTraversalNeeded; 1426 } 1427 if (what & eMatrixChanged) { 1428 if (layer->setMatrix(s.matrix)) 1429 flags |= eTraversalNeeded; 1430 } 1431 if (what & eTransparentRegionChanged) { 1432 if (layer->setTransparentRegionHint(s.transparentRegion)) 1433 flags |= eTraversalNeeded; 1434 } 1435 if (what & eVisibilityChanged) { 1436 if (layer->setFlags(s.flags, s.mask)) 1437 flags |= eTraversalNeeded; 1438 } 1439 } 1440 } 1441 if (flags) { 1442 setTransactionFlags(flags); 1443 } 1444 return NO_ERROR; 1445} 1446 1447void SurfaceFlinger::screenReleased(int dpy) 1448{ 1449 // this may be called by a signal handler, we can't do too much in here 1450 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1451 signalEvent(); 1452} 1453 1454void SurfaceFlinger::screenAcquired(int dpy) 1455{ 1456 // this may be called by a signal handler, we can't do too much in here 1457 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1458 signalEvent(); 1459} 1460 1461status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1462{ 1463 const size_t SIZE = 1024; 1464 char buffer[SIZE]; 1465 String8 result; 1466 if (!mDump.checkCalling()) { 1467 snprintf(buffer, SIZE, "Permission Denial: " 1468 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1469 IPCThreadState::self()->getCallingPid(), 1470 IPCThreadState::self()->getCallingUid()); 1471 result.append(buffer); 1472 } else { 1473 1474 // figure out if we're stuck somewhere 1475 const nsecs_t now = systemTime(); 1476 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1477 const nsecs_t inTransaction(mDebugInTransaction); 1478 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1479 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1480 1481 // Try to get the main lock, but don't insist if we can't 1482 // (this would indicate SF is stuck, but we want to be able to 1483 // print something in dumpsys). 1484 int retry = 3; 1485 while (mStateLock.tryLock()<0 && --retry>=0) { 1486 usleep(1000000); 1487 } 1488 const bool locked(retry >= 0); 1489 if (!locked) { 1490 snprintf(buffer, SIZE, 1491 "SurfaceFlinger appears to be unresponsive, " 1492 "dumping anyways (no locks held)\n"); 1493 result.append(buffer); 1494 } 1495 1496 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1497 const size_t count = currentLayers.size(); 1498 for (size_t i=0 ; i<count ; i++) { 1499 const sp<LayerBase>& layer(currentLayers[i]); 1500 layer->dump(result, buffer, SIZE); 1501 const Layer::State& s(layer->drawingState()); 1502 s.transparentRegion.dump(result, "transparentRegion"); 1503 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1504 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1505 } 1506 1507 mWormholeRegion.dump(result, "WormholeRegion"); 1508 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1509 snprintf(buffer, SIZE, 1510 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1511 mFreezeDisplay?"yes":"no", mFreezeCount, 1512 mCurrentState.orientation, hw.canDraw()); 1513 result.append(buffer); 1514 snprintf(buffer, SIZE, 1515 " last eglSwapBuffers() time: %f us\n" 1516 " last transaction time : %f us\n", 1517 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1518 result.append(buffer); 1519 1520 if (inSwapBuffersDuration || !locked) { 1521 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1522 inSwapBuffersDuration/1000.0); 1523 result.append(buffer); 1524 } 1525 1526 if (inTransactionDuration || !locked) { 1527 snprintf(buffer, SIZE, " transaction time: %f us\n", 1528 inTransactionDuration/1000.0); 1529 result.append(buffer); 1530 } 1531 1532 HWComposer& hwc(hw.getHwComposer()); 1533 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1534 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1535 mDebugDisableHWC ? "disabled" : "enabled"); 1536 result.append(buffer); 1537 hwc.dump(result, buffer, SIZE); 1538 1539 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1540 alloc.dump(result); 1541 1542 if (locked) { 1543 mStateLock.unlock(); 1544 } 1545 } 1546 write(fd, result.string(), result.size()); 1547 return NO_ERROR; 1548} 1549 1550status_t SurfaceFlinger::onTransact( 1551 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1552{ 1553 switch (code) { 1554 case CREATE_CONNECTION: 1555 case OPEN_GLOBAL_TRANSACTION: 1556 case CLOSE_GLOBAL_TRANSACTION: 1557 case SET_ORIENTATION: 1558 case FREEZE_DISPLAY: 1559 case UNFREEZE_DISPLAY: 1560 case BOOT_FINISHED: 1561 { 1562 // codes that require permission check 1563 IPCThreadState* ipc = IPCThreadState::self(); 1564 const int pid = ipc->getCallingPid(); 1565 const int uid = ipc->getCallingUid(); 1566 if ((uid != AID_GRAPHICS) && !mAccessSurfaceFlinger.check(pid, uid)) { 1567 LOGE("Permission Denial: " 1568 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1569 return PERMISSION_DENIED; 1570 } 1571 break; 1572 } 1573 case CAPTURE_SCREEN: 1574 { 1575 // codes that require permission check 1576 IPCThreadState* ipc = IPCThreadState::self(); 1577 const int pid = ipc->getCallingPid(); 1578 const int uid = ipc->getCallingUid(); 1579 if ((uid != AID_GRAPHICS) && !mReadFramebuffer.check(pid, uid)) { 1580 LOGE("Permission Denial: " 1581 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1582 return PERMISSION_DENIED; 1583 } 1584 break; 1585 } 1586 } 1587 1588 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1589 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1590 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1591 if (UNLIKELY(!mHardwareTest.checkCalling())) { 1592 IPCThreadState* ipc = IPCThreadState::self(); 1593 const int pid = ipc->getCallingPid(); 1594 const int uid = ipc->getCallingUid(); 1595 LOGE("Permission Denial: " 1596 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1597 return PERMISSION_DENIED; 1598 } 1599 int n; 1600 switch (code) { 1601 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1602 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1603 return NO_ERROR; 1604 case 1002: // SHOW_UPDATES 1605 n = data.readInt32(); 1606 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1607 return NO_ERROR; 1608 case 1003: // SHOW_BACKGROUND 1609 n = data.readInt32(); 1610 mDebugBackground = n ? 1 : 0; 1611 return NO_ERROR; 1612 case 1008: // toggle use of hw composer 1613 n = data.readInt32(); 1614 mDebugDisableHWC = n ? 1 : 0; 1615 mHwWorkListDirty = true; 1616 // fall-through... 1617 case 1004:{ // repaint everything 1618 Mutex::Autolock _l(mStateLock); 1619 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1620 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1621 signalEvent(); 1622 return NO_ERROR; 1623 } 1624 case 1005:{ // force transaction 1625 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1626 return NO_ERROR; 1627 } 1628 case 1006:{ // enable/disable GraphicLog 1629 int enabled = data.readInt32(); 1630 GraphicLog::getInstance().setEnabled(enabled); 1631 return NO_ERROR; 1632 } 1633 case 1007: // set mFreezeCount 1634 mFreezeCount = data.readInt32(); 1635 mFreezeDisplayTime = 0; 1636 return NO_ERROR; 1637 case 1010: // interrogate. 1638 reply->writeInt32(0); 1639 reply->writeInt32(0); 1640 reply->writeInt32(mDebugRegion); 1641 reply->writeInt32(mDebugBackground); 1642 return NO_ERROR; 1643 case 1013: { 1644 Mutex::Autolock _l(mStateLock); 1645 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1646 reply->writeInt32(hw.getPageFlipCount()); 1647 } 1648 return NO_ERROR; 1649 } 1650 } 1651 return err; 1652} 1653 1654// --------------------------------------------------------------------------- 1655 1656status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 1657 sp<IMemoryHeap>* heap, 1658 uint32_t* w, uint32_t* h, PixelFormat* f, 1659 uint32_t sw, uint32_t sh) 1660{ 1661 status_t result = PERMISSION_DENIED; 1662 1663 // only one display supported for now 1664 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1665 return BAD_VALUE; 1666 1667 if (!GLExtensions::getInstance().haveFramebufferObject()) 1668 return INVALID_OPERATION; 1669 1670 // get screen geometry 1671 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1672 const uint32_t hw_w = hw.getWidth(); 1673 const uint32_t hw_h = hw.getHeight(); 1674 1675 if ((sw > hw_w) || (sh > hw_h)) 1676 return BAD_VALUE; 1677 1678 sw = (!sw) ? hw_w : sw; 1679 sh = (!sh) ? hw_h : sh; 1680 const size_t size = sw * sh * 4; 1681 1682 // make sure to clear all GL error flags 1683 while ( glGetError() != GL_NO_ERROR ) ; 1684 1685 // create a FBO 1686 GLuint name, tname; 1687 glGenRenderbuffersOES(1, &tname); 1688 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 1689 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 1690 glGenFramebuffersOES(1, &name); 1691 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1692 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 1693 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 1694 1695 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 1696 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 1697 1698 // invert everything, b/c glReadPixel() below will invert the FB 1699 glViewport(0, 0, sw, sh); 1700 glMatrixMode(GL_PROJECTION); 1701 glPushMatrix(); 1702 glLoadIdentity(); 1703 glOrthof(0, hw_w, 0, hw_h, 0, 1); 1704 glMatrixMode(GL_MODELVIEW); 1705 1706 // redraw the screen entirely... 1707 glClearColor(0,0,0,1); 1708 glClear(GL_COLOR_BUFFER_BIT); 1709 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1710 const size_t count = layers.size(); 1711 for (size_t i=0 ; i<count ; ++i) { 1712 const sp<LayerBase>& layer(layers[i]); 1713 layer->drawForSreenShot(); 1714 } 1715 1716 // XXX: this is needed on tegra 1717 glScissor(0, 0, sw, sh); 1718 1719 // check for errors and return screen capture 1720 if (glGetError() != GL_NO_ERROR) { 1721 // error while rendering 1722 result = INVALID_OPERATION; 1723 } else { 1724 // allocate shared memory large enough to hold the 1725 // screen capture 1726 sp<MemoryHeapBase> base( 1727 new MemoryHeapBase(size, 0, "screen-capture") ); 1728 void* const ptr = base->getBase(); 1729 if (ptr) { 1730 // capture the screen with glReadPixels() 1731 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 1732 if (glGetError() == GL_NO_ERROR) { 1733 *heap = base; 1734 *w = sw; 1735 *h = sh; 1736 *f = PIXEL_FORMAT_RGBA_8888; 1737 result = NO_ERROR; 1738 } 1739 } else { 1740 result = NO_MEMORY; 1741 } 1742 } 1743 1744 glEnable(GL_SCISSOR_TEST); 1745 glViewport(0, 0, hw_w, hw_h); 1746 glMatrixMode(GL_PROJECTION); 1747 glPopMatrix(); 1748 glMatrixMode(GL_MODELVIEW); 1749 1750 1751 } else { 1752 result = BAD_VALUE; 1753 } 1754 1755 // release FBO resources 1756 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1757 glDeleteRenderbuffersOES(1, &tname); 1758 glDeleteFramebuffersOES(1, &name); 1759 return result; 1760} 1761 1762 1763status_t SurfaceFlinger::captureScreen(DisplayID dpy, 1764 sp<IMemoryHeap>* heap, 1765 uint32_t* width, uint32_t* height, PixelFormat* format, 1766 uint32_t sw, uint32_t sh) 1767{ 1768 // only one display supported for now 1769 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1770 return BAD_VALUE; 1771 1772 if (!GLExtensions::getInstance().haveFramebufferObject()) 1773 return INVALID_OPERATION; 1774 1775 class MessageCaptureScreen : public MessageBase { 1776 SurfaceFlinger* flinger; 1777 DisplayID dpy; 1778 sp<IMemoryHeap>* heap; 1779 uint32_t* w; 1780 uint32_t* h; 1781 PixelFormat* f; 1782 uint32_t sw; 1783 uint32_t sh; 1784 status_t result; 1785 public: 1786 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 1787 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 1788 uint32_t sw, uint32_t sh) 1789 : flinger(flinger), dpy(dpy), 1790 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), result(PERMISSION_DENIED) 1791 { 1792 } 1793 status_t getResult() const { 1794 return result; 1795 } 1796 virtual bool handler() { 1797 Mutex::Autolock _l(flinger->mStateLock); 1798 1799 // if we have secure windows, never allow the screen capture 1800 if (flinger->mSecureFrameBuffer) 1801 return true; 1802 1803 result = flinger->captureScreenImplLocked(dpy, 1804 heap, w, h, f, sw, sh); 1805 1806 return true; 1807 } 1808 }; 1809 1810 sp<MessageBase> msg = new MessageCaptureScreen(this, 1811 dpy, heap, width, height, format, sw, sh); 1812 status_t res = postMessageSync(msg); 1813 if (res == NO_ERROR) { 1814 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 1815 } 1816 return res; 1817} 1818 1819// --------------------------------------------------------------------------- 1820 1821sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 1822{ 1823 sp<Layer> result; 1824 Mutex::Autolock _l(mStateLock); 1825 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 1826 return result; 1827} 1828 1829// --------------------------------------------------------------------------- 1830 1831Client::Client(const sp<SurfaceFlinger>& flinger) 1832 : mFlinger(flinger), mNameGenerator(1) 1833{ 1834} 1835 1836Client::~Client() 1837{ 1838 const size_t count = mLayers.size(); 1839 for (size_t i=0 ; i<count ; i++) { 1840 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 1841 if (layer != 0) { 1842 mFlinger->removeLayer(layer); 1843 } 1844 } 1845} 1846 1847status_t Client::initCheck() const { 1848 return NO_ERROR; 1849} 1850 1851ssize_t Client::attachLayer(const sp<LayerBaseClient>& layer) 1852{ 1853 int32_t name = android_atomic_inc(&mNameGenerator); 1854 mLayers.add(name, layer); 1855 return name; 1856} 1857 1858void Client::detachLayer(const LayerBaseClient* layer) 1859{ 1860 // we do a linear search here, because this doesn't happen often 1861 const size_t count = mLayers.size(); 1862 for (size_t i=0 ; i<count ; i++) { 1863 if (mLayers.valueAt(i) == layer) { 1864 mLayers.removeItemsAt(i, 1); 1865 break; 1866 } 1867 } 1868} 1869sp<LayerBaseClient> Client::getLayerUser(int32_t i) const { 1870 sp<LayerBaseClient> lbc; 1871 const wp<LayerBaseClient>& layer(mLayers.valueFor(i)); 1872 if (layer != 0) { 1873 lbc = layer.promote(); 1874 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 1875 } 1876 return lbc; 1877} 1878 1879sp<IMemoryHeap> Client::getControlBlock() const { 1880 return 0; 1881} 1882ssize_t Client::getTokenForSurface(const sp<ISurface>& sur) const { 1883 return -1; 1884} 1885sp<ISurface> Client::createSurface( 1886 ISurfaceComposerClient::surface_data_t* params, int pid, 1887 const String8& name, 1888 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 1889 uint32_t flags) 1890{ 1891 return mFlinger->createSurface(this, pid, name, params, 1892 display, w, h, format, flags); 1893} 1894status_t Client::destroySurface(SurfaceID sid) { 1895 return mFlinger->removeSurface(this, sid); 1896} 1897status_t Client::setState(int32_t count, const layer_state_t* states) { 1898 return mFlinger->setClientState(this, count, states); 1899} 1900 1901// --------------------------------------------------------------------------- 1902 1903UserClient::UserClient(const sp<SurfaceFlinger>& flinger) 1904 : ctrlblk(0), mBitmap(0), mFlinger(flinger) 1905{ 1906 const int pgsize = getpagesize(); 1907 const int cblksize = ((sizeof(SharedClient)+(pgsize-1))&~(pgsize-1)); 1908 1909 mCblkHeap = new MemoryHeapBase(cblksize, 0, 1910 "SurfaceFlinger Client control-block"); 1911 1912 ctrlblk = static_cast<SharedClient *>(mCblkHeap->getBase()); 1913 if (ctrlblk) { // construct the shared structure in-place. 1914 new(ctrlblk) SharedClient; 1915 } 1916} 1917 1918UserClient::~UserClient() 1919{ 1920 if (ctrlblk) { 1921 ctrlblk->~SharedClient(); // destroy our shared-structure. 1922 } 1923 1924 /* 1925 * When a UserClient dies, it's unclear what to do exactly. 1926 * We could go ahead and destroy all surfaces linked to that client 1927 * however, it wouldn't be fair to the main Client 1928 * (usually the the window-manager), which might want to re-target 1929 * the layer to another UserClient. 1930 * I think the best is to do nothing, or not much; in most cases the 1931 * WM itself will go ahead and clean things up when it detects a client of 1932 * his has died. 1933 * The remaining question is what to display? currently we keep 1934 * just keep the current buffer. 1935 */ 1936} 1937 1938status_t UserClient::initCheck() const { 1939 return ctrlblk == 0 ? NO_INIT : NO_ERROR; 1940} 1941 1942void UserClient::detachLayer(const Layer* layer) 1943{ 1944 int32_t name = layer->getToken(); 1945 if (name >= 0) { 1946 int32_t mask = 1LU<<name; 1947 if ((android_atomic_and(~mask, &mBitmap) & mask) == 0) { 1948 LOGW("token %d wasn't marked as used %08x", name, int(mBitmap)); 1949 } 1950 } 1951} 1952 1953sp<IMemoryHeap> UserClient::getControlBlock() const { 1954 return mCblkHeap; 1955} 1956 1957ssize_t UserClient::getTokenForSurface(const sp<ISurface>& sur) const 1958{ 1959 int32_t name = NAME_NOT_FOUND; 1960 sp<Layer> layer(mFlinger->getLayer(sur)); 1961 if (layer == 0) { 1962 return name; 1963 } 1964 1965 // if this layer already has a token, just return it 1966 name = layer->getToken(); 1967 if ((name >= 0) && (layer->getClient() == this)) { 1968 return name; 1969 } 1970 1971 name = 0; 1972 do { 1973 int32_t mask = 1LU<<name; 1974 if ((android_atomic_or(mask, &mBitmap) & mask) == 0) { 1975 // we found and locked that name 1976 status_t err = layer->setToken( 1977 const_cast<UserClient*>(this), ctrlblk, name); 1978 if (err != NO_ERROR) { 1979 // free the name 1980 android_atomic_and(~mask, &mBitmap); 1981 name = err; 1982 } 1983 break; 1984 } 1985 if (++name > 31) 1986 name = NO_MEMORY; 1987 } while(name >= 0); 1988 1989 //LOGD("getTokenForSurface(%p) => %d (client=%p, bitmap=%08lx)", 1990 // sur->asBinder().get(), name, this, mBitmap); 1991 return name; 1992} 1993 1994sp<ISurface> UserClient::createSurface( 1995 ISurfaceComposerClient::surface_data_t* params, int pid, 1996 const String8& name, 1997 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 1998 uint32_t flags) { 1999 return 0; 2000} 2001status_t UserClient::destroySurface(SurfaceID sid) { 2002 return INVALID_OPERATION; 2003} 2004status_t UserClient::setState(int32_t count, const layer_state_t* states) { 2005 return INVALID_OPERATION; 2006} 2007 2008// --------------------------------------------------------------------------- 2009 2010GraphicPlane::GraphicPlane() 2011 : mHw(0) 2012{ 2013} 2014 2015GraphicPlane::~GraphicPlane() { 2016 delete mHw; 2017} 2018 2019bool GraphicPlane::initialized() const { 2020 return mHw ? true : false; 2021} 2022 2023int GraphicPlane::getWidth() const { 2024 return mWidth; 2025} 2026 2027int GraphicPlane::getHeight() const { 2028 return mHeight; 2029} 2030 2031void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2032{ 2033 mHw = hw; 2034 2035 // initialize the display orientation transform. 2036 // it's a constant that should come from the display driver. 2037 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2038 char property[PROPERTY_VALUE_MAX]; 2039 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2040 //displayOrientation 2041 switch (atoi(property)) { 2042 case 90: 2043 displayOrientation = ISurfaceComposer::eOrientation90; 2044 break; 2045 case 270: 2046 displayOrientation = ISurfaceComposer::eOrientation270; 2047 break; 2048 } 2049 } 2050 2051 const float w = hw->getWidth(); 2052 const float h = hw->getHeight(); 2053 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2054 &mDisplayTransform); 2055 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2056 mDisplayWidth = h; 2057 mDisplayHeight = w; 2058 } else { 2059 mDisplayWidth = w; 2060 mDisplayHeight = h; 2061 } 2062 2063 setOrientation(ISurfaceComposer::eOrientationDefault); 2064} 2065 2066status_t GraphicPlane::orientationToTransfrom( 2067 int orientation, int w, int h, Transform* tr) 2068{ 2069 uint32_t flags = 0; 2070 switch (orientation) { 2071 case ISurfaceComposer::eOrientationDefault: 2072 flags = Transform::ROT_0; 2073 break; 2074 case ISurfaceComposer::eOrientation90: 2075 flags = Transform::ROT_90; 2076 break; 2077 case ISurfaceComposer::eOrientation180: 2078 flags = Transform::ROT_180; 2079 break; 2080 case ISurfaceComposer::eOrientation270: 2081 flags = Transform::ROT_270; 2082 break; 2083 default: 2084 return BAD_VALUE; 2085 } 2086 tr->set(flags, w, h); 2087 return NO_ERROR; 2088} 2089 2090status_t GraphicPlane::setOrientation(int orientation) 2091{ 2092 // If the rotation can be handled in hardware, this is where 2093 // the magic should happen. 2094 2095 const DisplayHardware& hw(displayHardware()); 2096 const float w = mDisplayWidth; 2097 const float h = mDisplayHeight; 2098 mWidth = int(w); 2099 mHeight = int(h); 2100 2101 Transform orientationTransform; 2102 GraphicPlane::orientationToTransfrom(orientation, w, h, 2103 &orientationTransform); 2104 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2105 mWidth = int(h); 2106 mHeight = int(w); 2107 } 2108 2109 mOrientation = orientation; 2110 mGlobalTransform = mDisplayTransform * orientationTransform; 2111 return NO_ERROR; 2112} 2113 2114const DisplayHardware& GraphicPlane::displayHardware() const { 2115 return *mHw; 2116} 2117 2118const Transform& GraphicPlane::transform() const { 2119 return mGlobalTransform; 2120} 2121 2122EGLDisplay GraphicPlane::getEGLDisplay() const { 2123 return mHw->getEGLDisplay(); 2124} 2125 2126// --------------------------------------------------------------------------- 2127 2128}; // namespace android 2129