SurfaceFlinger.cpp revision 28378392fd5aa3e0a392c9eb64634055678c3987
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#include <binder/PermissionCache.h> 36 37#include <utils/String8.h> 38#include <utils/String16.h> 39#include <utils/StopWatch.h> 40 41#include <ui/GraphicBufferAllocator.h> 42#include <ui/GraphicLog.h> 43#include <ui/PixelFormat.h> 44 45#include <pixelflinger/pixelflinger.h> 46#include <GLES/gl.h> 47 48#include "clz.h" 49#include "GLExtensions.h" 50#include "DdmConnection.h" 51#include "Layer.h" 52#include "LayerDim.h" 53#include "SurfaceFlinger.h" 54 55#include "DisplayHardware/DisplayHardware.h" 56#include "DisplayHardware/HWComposer.h" 57 58#include <private/surfaceflinger/SharedBufferStack.h> 59 60/* ideally AID_GRAPHICS would be in a semi-public header 61 * or there would be a way to map a user/group name to its id 62 */ 63#ifndef AID_GRAPHICS 64#define AID_GRAPHICS 1003 65#endif 66 67#define DISPLAY_COUNT 1 68 69namespace android { 70// --------------------------------------------------------------------------- 71 72const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 73const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 74const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 75const String16 sDump("android.permission.DUMP"); 76 77// --------------------------------------------------------------------------- 78 79SurfaceFlinger::SurfaceFlinger() 80 : BnSurfaceComposer(), Thread(false), 81 mTransactionFlags(0), 82 mTransationPending(false), 83 mLayersRemoved(false), 84 mBootTime(systemTime()), 85 mVisibleRegionsDirty(false), 86 mHwWorkListDirty(false), 87 mFreezeDisplay(false), 88 mElectronBeamAnimationMode(0), 89 mFreezeCount(0), 90 mFreezeDisplayTime(0), 91 mDebugRegion(0), 92 mDebugBackground(0), 93 mDebugDDMS(0), 94 mDebugDisableHWC(0), 95 mDebugDisableTransformHint(0), 96 mDebugInSwapBuffers(0), 97 mLastSwapBufferTime(0), 98 mDebugInTransaction(0), 99 mLastTransactionTime(0), 100 mBootFinished(false), 101 mConsoleSignals(0), 102 mSecureFrameBuffer(0) 103{ 104 init(); 105} 106 107void SurfaceFlinger::init() 108{ 109 LOGI("SurfaceFlinger is starting"); 110 111 // debugging stuff... 112 char value[PROPERTY_VALUE_MAX]; 113 114 property_get("debug.sf.showupdates", value, "0"); 115 mDebugRegion = atoi(value); 116 117 property_get("debug.sf.showbackground", value, "0"); 118 mDebugBackground = atoi(value); 119 120 property_get("debug.sf.ddms", value, "0"); 121 mDebugDDMS = atoi(value); 122 if (mDebugDDMS) { 123 DdmConnection::start(getServiceName()); 124 } 125 126 LOGI_IF(mDebugRegion, "showupdates enabled"); 127 LOGI_IF(mDebugBackground, "showbackground enabled"); 128 LOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 129} 130 131SurfaceFlinger::~SurfaceFlinger() 132{ 133 glDeleteTextures(1, &mWormholeTexName); 134} 135 136sp<IMemoryHeap> SurfaceFlinger::getCblk() const 137{ 138 return mServerHeap; 139} 140 141sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 142{ 143 sp<ISurfaceComposerClient> bclient; 144 sp<Client> client(new Client(this)); 145 status_t err = client->initCheck(); 146 if (err == NO_ERROR) { 147 bclient = client; 148 } 149 return bclient; 150} 151 152sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 153{ 154 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 155 return gba; 156} 157 158const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 159{ 160 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 161 const GraphicPlane& plane(mGraphicPlanes[dpy]); 162 return plane; 163} 164 165GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 166{ 167 return const_cast<GraphicPlane&>( 168 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 169} 170 171void SurfaceFlinger::bootFinished() 172{ 173 const nsecs_t now = systemTime(); 174 const nsecs_t duration = now - mBootTime; 175 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 176 mBootFinished = true; 177 178 // wait patiently for the window manager death 179 const String16 name("window"); 180 sp<IBinder> window(defaultServiceManager()->getService(name)); 181 if (window != 0) { 182 window->linkToDeath(this); 183 } 184 185 // stop boot animation 186 property_set("ctl.stop", "bootanim"); 187} 188 189void SurfaceFlinger::binderDied(const wp<IBinder>& who) 190{ 191 // the window manager died on us. prepare its eulogy. 192 193 // unfreeze the screen in case it was... frozen 194 mFreezeDisplayTime = 0; 195 mFreezeCount = 0; 196 mFreezeDisplay = false; 197 198 // reset screen orientation 199 setOrientation(0, eOrientationDefault, 0); 200 201 // restart the boot-animation 202 property_set("ctl.start", "bootanim"); 203} 204 205void SurfaceFlinger::onFirstRef() 206{ 207 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 208 209 // Wait for the main thread to be done with its initialization 210 mReadyToRunBarrier.wait(); 211} 212 213static inline uint16_t pack565(int r, int g, int b) { 214 return (r<<11)|(g<<5)|b; 215} 216 217status_t SurfaceFlinger::readyToRun() 218{ 219 LOGI( "SurfaceFlinger's main thread ready to run. " 220 "Initializing graphics H/W..."); 221 222 // we only support one display currently 223 int dpy = 0; 224 225 { 226 // initialize the main display 227 GraphicPlane& plane(graphicPlane(dpy)); 228 DisplayHardware* const hw = new DisplayHardware(this, dpy); 229 plane.setDisplayHardware(hw); 230 } 231 232 // create the shared control-block 233 mServerHeap = new MemoryHeapBase(4096, 234 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 235 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 236 237 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 238 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 239 240 new(mServerCblk) surface_flinger_cblk_t; 241 242 // initialize primary screen 243 // (other display should be initialized in the same manner, but 244 // asynchronously, as they could come and go. None of this is supported 245 // yet). 246 const GraphicPlane& plane(graphicPlane(dpy)); 247 const DisplayHardware& hw = plane.displayHardware(); 248 const uint32_t w = hw.getWidth(); 249 const uint32_t h = hw.getHeight(); 250 const uint32_t f = hw.getFormat(); 251 hw.makeCurrent(); 252 253 // initialize the shared control block 254 mServerCblk->connected |= 1<<dpy; 255 display_cblk_t* dcblk = mServerCblk->displays + dpy; 256 memset(dcblk, 0, sizeof(display_cblk_t)); 257 dcblk->w = plane.getWidth(); 258 dcblk->h = plane.getHeight(); 259 dcblk->format = f; 260 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 261 dcblk->xdpi = hw.getDpiX(); 262 dcblk->ydpi = hw.getDpiY(); 263 dcblk->fps = hw.getRefreshRate(); 264 dcblk->density = hw.getDensity(); 265 266 // Initialize OpenGL|ES 267 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 268 glPixelStorei(GL_PACK_ALIGNMENT, 4); 269 glEnableClientState(GL_VERTEX_ARRAY); 270 glEnable(GL_SCISSOR_TEST); 271 glShadeModel(GL_FLAT); 272 glDisable(GL_DITHER); 273 glDisable(GL_CULL_FACE); 274 275 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 276 const uint16_t g1 = pack565(0x17,0x2f,0x17); 277 const uint16_t wormholeTexData[4] = { g0, g1, g1, g0 }; 278 glGenTextures(1, &mWormholeTexName); 279 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 280 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 281 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 282 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 283 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 284 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 285 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, wormholeTexData); 286 287 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 288 glGenTextures(1, &mProtectedTexName); 289 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 290 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 291 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 292 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 293 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 294 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 295 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 296 297 glViewport(0, 0, w, h); 298 glMatrixMode(GL_PROJECTION); 299 glLoadIdentity(); 300 // put the origin in the left-bottom corner 301 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 302 303 mReadyToRunBarrier.open(); 304 305 /* 306 * We're now ready to accept clients... 307 */ 308 309 // start boot animation 310 property_set("ctl.start", "bootanim"); 311 312 return NO_ERROR; 313} 314 315// ---------------------------------------------------------------------------- 316#if 0 317#pragma mark - 318#pragma mark Events Handler 319#endif 320 321void SurfaceFlinger::waitForEvent() 322{ 323 while (true) { 324 nsecs_t timeout = -1; 325 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 326 if (UNLIKELY(isFrozen())) { 327 // wait 5 seconds 328 const nsecs_t now = systemTime(); 329 if (mFreezeDisplayTime == 0) { 330 mFreezeDisplayTime = now; 331 } 332 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 333 timeout = waitTime>0 ? waitTime : 0; 334 } 335 336 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 337 338 // see if we timed out 339 if (isFrozen()) { 340 const nsecs_t now = systemTime(); 341 nsecs_t frozenTime = (now - mFreezeDisplayTime); 342 if (frozenTime >= freezeDisplayTimeout) { 343 // we timed out and are still frozen 344 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 345 mFreezeDisplay, mFreezeCount); 346 mFreezeDisplayTime = 0; 347 mFreezeCount = 0; 348 mFreezeDisplay = false; 349 } 350 } 351 352 if (msg != 0) { 353 switch (msg->what) { 354 case MessageQueue::INVALIDATE: 355 // invalidate message, just return to the main loop 356 return; 357 } 358 } 359 } 360} 361 362void SurfaceFlinger::signalEvent() { 363 mEventQueue.invalidate(); 364} 365 366bool SurfaceFlinger::authenticateSurfaceTexture( 367 const sp<ISurfaceTexture>& surfaceTexture) const { 368 Mutex::Autolock _l(mStateLock); 369 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 370 371 // Check the visible layer list for the ISurface 372 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 373 size_t count = currentLayers.size(); 374 for (size_t i=0 ; i<count ; i++) { 375 const sp<LayerBase>& layer(currentLayers[i]); 376 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 377 if (lbc != NULL) { 378 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 379 if (lbcBinder == surfaceTextureBinder) { 380 return true; 381 } 382 } 383 } 384 385 // Check the layers in the purgatory. This check is here so that if a 386 // SurfaceTexture gets destroyed before all the clients are done using it, 387 // the error will not be reported as "surface XYZ is not authenticated", but 388 // will instead fail later on when the client tries to use the surface, 389 // which should be reported as "surface XYZ returned an -ENODEV". The 390 // purgatorized layers are no less authentic than the visible ones, so this 391 // should not cause any harm. 392 size_t purgatorySize = mLayerPurgatory.size(); 393 for (size_t i=0 ; i<purgatorySize ; i++) { 394 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 395 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 396 if (lbc != NULL) { 397 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 398 if (lbcBinder == surfaceTextureBinder) { 399 return true; 400 } 401 } 402 } 403 404 return false; 405} 406 407status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 408 nsecs_t reltime, uint32_t flags) 409{ 410 return mEventQueue.postMessage(msg, reltime, flags); 411} 412 413status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 414 nsecs_t reltime, uint32_t flags) 415{ 416 status_t res = mEventQueue.postMessage(msg, reltime, flags); 417 if (res == NO_ERROR) { 418 msg->wait(); 419 } 420 return res; 421} 422 423// ---------------------------------------------------------------------------- 424#if 0 425#pragma mark - 426#pragma mark Main loop 427#endif 428 429bool SurfaceFlinger::threadLoop() 430{ 431 waitForEvent(); 432 433 // check for transactions 434 if (UNLIKELY(mConsoleSignals)) { 435 handleConsoleEvents(); 436 } 437 438 // if we're in a global transaction, don't do anything. 439 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 440 uint32_t transactionFlags = peekTransactionFlags(mask); 441 if (UNLIKELY(transactionFlags)) { 442 handleTransaction(transactionFlags); 443 } 444 445 // post surfaces (if needed) 446 handlePageFlip(); 447 448 if (UNLIKELY(mHwWorkListDirty)) { 449 // build the h/w work list 450 handleWorkList(); 451 } 452 453 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 454 if (LIKELY(hw.canDraw() && !isFrozen())) { 455 // repaint the framebuffer (if needed) 456 457 const int index = hw.getCurrentBufferIndex(); 458 GraphicLog& logger(GraphicLog::getInstance()); 459 460 logger.log(GraphicLog::SF_REPAINT, index); 461 handleRepaint(); 462 463 // inform the h/w that we're done compositing 464 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 465 hw.compositionComplete(); 466 467 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 468 postFramebuffer(); 469 470 logger.log(GraphicLog::SF_REPAINT_DONE, index); 471 } else { 472 // pretend we did the post 473 hw.compositionComplete(); 474 usleep(16667); // 60 fps period 475 } 476 return true; 477} 478 479void SurfaceFlinger::postFramebuffer() 480{ 481 if (!mSwapRegion.isEmpty()) { 482 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 483 const nsecs_t now = systemTime(); 484 mDebugInSwapBuffers = now; 485 hw.flip(mSwapRegion); 486 mLastSwapBufferTime = systemTime() - now; 487 mDebugInSwapBuffers = 0; 488 mSwapRegion.clear(); 489 } 490} 491 492void SurfaceFlinger::handleConsoleEvents() 493{ 494 // something to do with the console 495 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 496 497 int what = android_atomic_and(0, &mConsoleSignals); 498 if (what & eConsoleAcquired) { 499 hw.acquireScreen(); 500 // this is a temporary work-around, eventually this should be called 501 // by the power-manager 502 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 503 } 504 505 if (what & eConsoleReleased) { 506 if (hw.isScreenAcquired()) { 507 hw.releaseScreen(); 508 } 509 } 510 511 mDirtyRegion.set(hw.bounds()); 512} 513 514void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 515{ 516 Mutex::Autolock _l(mStateLock); 517 const nsecs_t now = systemTime(); 518 mDebugInTransaction = now; 519 520 // Here we're guaranteed that some transaction flags are set 521 // so we can call handleTransactionLocked() unconditionally. 522 // We call getTransactionFlags(), which will also clear the flags, 523 // with mStateLock held to guarantee that mCurrentState won't change 524 // until the transaction is committed. 525 526 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 527 transactionFlags = getTransactionFlags(mask); 528 handleTransactionLocked(transactionFlags); 529 530 mLastTransactionTime = systemTime() - now; 531 mDebugInTransaction = 0; 532 invalidateHwcGeometry(); 533 // here the transaction has been committed 534} 535 536void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 537{ 538 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 539 const size_t count = currentLayers.size(); 540 541 /* 542 * Traversal of the children 543 * (perform the transaction for each of them if needed) 544 */ 545 546 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 547 if (layersNeedTransaction) { 548 for (size_t i=0 ; i<count ; i++) { 549 const sp<LayerBase>& layer = currentLayers[i]; 550 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 551 if (!trFlags) continue; 552 553 const uint32_t flags = layer->doTransaction(0); 554 if (flags & Layer::eVisibleRegion) 555 mVisibleRegionsDirty = true; 556 } 557 } 558 559 /* 560 * Perform our own transaction if needed 561 */ 562 563 if (transactionFlags & eTransactionNeeded) { 564 if (mCurrentState.orientation != mDrawingState.orientation) { 565 // the orientation has changed, recompute all visible regions 566 // and invalidate everything. 567 568 const int dpy = 0; 569 const int orientation = mCurrentState.orientation; 570 // Currently unused: const uint32_t flags = mCurrentState.orientationFlags; 571 GraphicPlane& plane(graphicPlane(dpy)); 572 plane.setOrientation(orientation); 573 574 // update the shared control block 575 const DisplayHardware& hw(plane.displayHardware()); 576 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 577 dcblk->orientation = orientation; 578 dcblk->w = plane.getWidth(); 579 dcblk->h = plane.getHeight(); 580 581 mVisibleRegionsDirty = true; 582 mDirtyRegion.set(hw.bounds()); 583 } 584 585 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 586 // freezing or unfreezing the display -> trigger animation if needed 587 mFreezeDisplay = mCurrentState.freezeDisplay; 588 if (mFreezeDisplay) 589 mFreezeDisplayTime = 0; 590 } 591 592 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 593 // layers have been added 594 mVisibleRegionsDirty = true; 595 } 596 597 // some layers might have been removed, so 598 // we need to update the regions they're exposing. 599 if (mLayersRemoved) { 600 mLayersRemoved = false; 601 mVisibleRegionsDirty = true; 602 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 603 const size_t count = previousLayers.size(); 604 for (size_t i=0 ; i<count ; i++) { 605 const sp<LayerBase>& layer(previousLayers[i]); 606 if (currentLayers.indexOf( layer ) < 0) { 607 // this layer is not visible anymore 608 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 609 } 610 } 611 } 612 } 613 614 commitTransaction(); 615} 616 617sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 618{ 619 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 620} 621 622void SurfaceFlinger::computeVisibleRegions( 623 const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 624{ 625 const GraphicPlane& plane(graphicPlane(0)); 626 const Transform& planeTransform(plane.transform()); 627 const DisplayHardware& hw(plane.displayHardware()); 628 const Region screenRegion(hw.bounds()); 629 630 Region aboveOpaqueLayers; 631 Region aboveCoveredLayers; 632 Region dirty; 633 634 bool secureFrameBuffer = false; 635 636 size_t i = currentLayers.size(); 637 while (i--) { 638 const sp<LayerBase>& layer = currentLayers[i]; 639 layer->validateVisibility(planeTransform); 640 641 // start with the whole surface at its current location 642 const Layer::State& s(layer->drawingState()); 643 644 /* 645 * opaqueRegion: area of a surface that is fully opaque. 646 */ 647 Region opaqueRegion; 648 649 /* 650 * visibleRegion: area of a surface that is visible on screen 651 * and not fully transparent. This is essentially the layer's 652 * footprint minus the opaque regions above it. 653 * Areas covered by a translucent surface are considered visible. 654 */ 655 Region visibleRegion; 656 657 /* 658 * coveredRegion: area of a surface that is covered by all 659 * visible regions above it (which includes the translucent areas). 660 */ 661 Region coveredRegion; 662 663 664 // handle hidden surfaces by setting the visible region to empty 665 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 666 const bool translucent = !layer->isOpaque(); 667 const Rect bounds(layer->visibleBounds()); 668 visibleRegion.set(bounds); 669 visibleRegion.andSelf(screenRegion); 670 if (!visibleRegion.isEmpty()) { 671 // Remove the transparent area from the visible region 672 if (translucent) { 673 visibleRegion.subtractSelf(layer->transparentRegionScreen); 674 } 675 676 // compute the opaque region 677 const int32_t layerOrientation = layer->getOrientation(); 678 if (s.alpha==255 && !translucent && 679 ((layerOrientation & Transform::ROT_INVALID) == false)) { 680 // the opaque region is the layer's footprint 681 opaqueRegion = visibleRegion; 682 } 683 } 684 } 685 686 // Clip the covered region to the visible region 687 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 688 689 // Update aboveCoveredLayers for next (lower) layer 690 aboveCoveredLayers.orSelf(visibleRegion); 691 692 // subtract the opaque region covered by the layers above us 693 visibleRegion.subtractSelf(aboveOpaqueLayers); 694 695 // compute this layer's dirty region 696 if (layer->contentDirty) { 697 // we need to invalidate the whole region 698 dirty = visibleRegion; 699 // as well, as the old visible region 700 dirty.orSelf(layer->visibleRegionScreen); 701 layer->contentDirty = false; 702 } else { 703 /* compute the exposed region: 704 * the exposed region consists of two components: 705 * 1) what's VISIBLE now and was COVERED before 706 * 2) what's EXPOSED now less what was EXPOSED before 707 * 708 * note that (1) is conservative, we start with the whole 709 * visible region but only keep what used to be covered by 710 * something -- which mean it may have been exposed. 711 * 712 * (2) handles areas that were not covered by anything but got 713 * exposed because of a resize. 714 */ 715 const Region newExposed = visibleRegion - coveredRegion; 716 const Region oldVisibleRegion = layer->visibleRegionScreen; 717 const Region oldCoveredRegion = layer->coveredRegionScreen; 718 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 719 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 720 } 721 dirty.subtractSelf(aboveOpaqueLayers); 722 723 // accumulate to the screen dirty region 724 dirtyRegion.orSelf(dirty); 725 726 // Update aboveOpaqueLayers for next (lower) layer 727 aboveOpaqueLayers.orSelf(opaqueRegion); 728 729 // Store the visible region is screen space 730 layer->setVisibleRegion(visibleRegion); 731 layer->setCoveredRegion(coveredRegion); 732 733 // If a secure layer is partially visible, lock-down the screen! 734 if (layer->isSecure() && !visibleRegion.isEmpty()) { 735 secureFrameBuffer = true; 736 } 737 } 738 739 // invalidate the areas where a layer was removed 740 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 741 mDirtyRegionRemovedLayer.clear(); 742 743 mSecureFrameBuffer = secureFrameBuffer; 744 opaqueRegion = aboveOpaqueLayers; 745} 746 747 748void SurfaceFlinger::commitTransaction() 749{ 750 mDrawingState = mCurrentState; 751 mTransationPending = false; 752 mTransactionCV.broadcast(); 753} 754 755void SurfaceFlinger::handlePageFlip() 756{ 757 bool visibleRegions = mVisibleRegionsDirty; 758 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 759 visibleRegions |= lockPageFlip(currentLayers); 760 761 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 762 const Region screenRegion(hw.bounds()); 763 if (visibleRegions) { 764 Region opaqueRegion; 765 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 766 767 /* 768 * rebuild the visible layer list 769 */ 770 const size_t count = currentLayers.size(); 771 mVisibleLayersSortedByZ.clear(); 772 mVisibleLayersSortedByZ.setCapacity(count); 773 for (size_t i=0 ; i<count ; i++) { 774 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 775 mVisibleLayersSortedByZ.add(currentLayers[i]); 776 } 777 778 mWormholeRegion = screenRegion.subtract(opaqueRegion); 779 mVisibleRegionsDirty = false; 780 invalidateHwcGeometry(); 781 } 782 783 unlockPageFlip(currentLayers); 784 mDirtyRegion.andSelf(screenRegion); 785} 786 787void SurfaceFlinger::invalidateHwcGeometry() 788{ 789 mHwWorkListDirty = true; 790} 791 792bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 793{ 794 bool recomputeVisibleRegions = false; 795 size_t count = currentLayers.size(); 796 sp<LayerBase> const* layers = currentLayers.array(); 797 for (size_t i=0 ; i<count ; i++) { 798 const sp<LayerBase>& layer(layers[i]); 799 layer->lockPageFlip(recomputeVisibleRegions); 800 } 801 return recomputeVisibleRegions; 802} 803 804void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 805{ 806 const GraphicPlane& plane(graphicPlane(0)); 807 const Transform& planeTransform(plane.transform()); 808 size_t count = currentLayers.size(); 809 sp<LayerBase> const* layers = currentLayers.array(); 810 for (size_t i=0 ; i<count ; i++) { 811 const sp<LayerBase>& layer(layers[i]); 812 layer->unlockPageFlip(planeTransform, mDirtyRegion); 813 } 814} 815 816void SurfaceFlinger::handleWorkList() 817{ 818 mHwWorkListDirty = false; 819 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 820 if (hwc.initCheck() == NO_ERROR) { 821 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 822 const size_t count = currentLayers.size(); 823 hwc.createWorkList(count); 824 hwc_layer_t* const cur(hwc.getLayers()); 825 for (size_t i=0 ; cur && i<count ; i++) { 826 currentLayers[i]->setGeometry(&cur[i]); 827 if (mDebugDisableHWC || mDebugRegion) { 828 cur[i].compositionType = HWC_FRAMEBUFFER; 829 cur[i].flags |= HWC_SKIP_LAYER; 830 } 831 } 832 } 833} 834 835void SurfaceFlinger::handleRepaint() 836{ 837 // compute the invalid region 838 mSwapRegion.orSelf(mDirtyRegion); 839 840 if (UNLIKELY(mDebugRegion)) { 841 debugFlashRegions(); 842 } 843 844 // set the frame buffer 845 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 846 glMatrixMode(GL_MODELVIEW); 847 glLoadIdentity(); 848 849 uint32_t flags = hw.getFlags(); 850 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 851 (flags & DisplayHardware::BUFFER_PRESERVED)) 852 { 853 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 854 // takes a rectangle, we must make sure to update that whole 855 // rectangle in that case 856 if (flags & DisplayHardware::SWAP_RECTANGLE) { 857 // TODO: we really should be able to pass a region to 858 // SWAP_RECTANGLE so that we don't have to redraw all this. 859 mDirtyRegion.set(mSwapRegion.bounds()); 860 } else { 861 // in the BUFFER_PRESERVED case, obviously, we can update only 862 // what's needed and nothing more. 863 // NOTE: this is NOT a common case, as preserving the backbuffer 864 // is costly and usually involves copying the whole update back. 865 } 866 } else { 867 if (flags & DisplayHardware::PARTIAL_UPDATES) { 868 // We need to redraw the rectangle that will be updated 869 // (pushed to the framebuffer). 870 // This is needed because PARTIAL_UPDATES only takes one 871 // rectangle instead of a region (see DisplayHardware::flip()) 872 mDirtyRegion.set(mSwapRegion.bounds()); 873 } else { 874 // we need to redraw everything (the whole screen) 875 mDirtyRegion.set(hw.bounds()); 876 mSwapRegion = mDirtyRegion; 877 } 878 } 879 880 setupHardwareComposer(mDirtyRegion); 881 composeSurfaces(mDirtyRegion); 882 883 // update the swap region and clear the dirty region 884 mSwapRegion.orSelf(mDirtyRegion); 885 mDirtyRegion.clear(); 886} 887 888void SurfaceFlinger::setupHardwareComposer(Region& dirtyInOut) 889{ 890 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 891 HWComposer& hwc(hw.getHwComposer()); 892 hwc_layer_t* const cur(hwc.getLayers()); 893 if (!cur) { 894 return; 895 } 896 897 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 898 size_t count = layers.size(); 899 900 LOGE_IF(hwc.getNumLayers() != count, 901 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 902 hwc.getNumLayers(), count); 903 904 // just to be extra-safe, use the smallest count 905 if (hwc.initCheck() == NO_ERROR) { 906 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 907 } 908 909 /* 910 * update the per-frame h/w composer data for each layer 911 * and build the transparent region of the FB 912 */ 913 for (size_t i=0 ; i<count ; i++) { 914 const sp<LayerBase>& layer(layers[i]); 915 layer->setPerFrameData(&cur[i]); 916 } 917 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 918 status_t err = hwc.prepare(); 919 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 920 921 if (err == NO_ERROR) { 922 // what's happening here is tricky. 923 // we want to clear all the layers with the CLEAR_FB flags 924 // that are opaque. 925 // however, since some GPU are efficient at preserving 926 // the backbuffer, we want to take advantage of that so we do the 927 // clear only in the dirty region (other areas will be preserved 928 // on those GPUs). 929 // NOTE: on non backbuffer preserving GPU, the dirty region 930 // has already been expanded as needed, so the code is correct 931 // there too. 932 // 933 // However, the content of the framebuffer cannot be trusted when 934 // we switch to/from FB/OVERLAY, in which case we need to 935 // expand the dirty region to those areas too. 936 // 937 // Note also that there is a special case when switching from 938 // "no layers in FB" to "some layers in FB", where we need to redraw 939 // the entire FB, since some areas might contain uninitialized 940 // data. 941 // 942 // Also we want to make sure to not clear areas that belong to 943 // layers above that won't redraw (we would just erasing them), 944 // that is, we can't erase anything outside the dirty region. 945 946 Region transparent; 947 948 if (!fbLayerCount && hwc.getLayerCount(HWC_FRAMEBUFFER)) { 949 transparent.set(hw.getBounds()); 950 dirtyInOut = transparent; 951 } else { 952 for (size_t i=0 ; i<count ; i++) { 953 const sp<LayerBase>& layer(layers[i]); 954 if ((cur[i].hints & HWC_HINT_CLEAR_FB) && layer->isOpaque()) { 955 transparent.orSelf(layer->visibleRegionScreen); 956 } 957 bool isOverlay = (cur[i].compositionType != HWC_FRAMEBUFFER); 958 if (isOverlay != layer->isOverlay()) { 959 // we transitioned to/from overlay, so add this layer 960 // to the dirty region so the framebuffer can be either 961 // cleared or redrawn. 962 dirtyInOut.orSelf(layer->visibleRegionScreen); 963 } 964 layer->setOverlay(isOverlay); 965 } 966 // don't erase stuff outside the dirty region 967 transparent.andSelf(dirtyInOut); 968 } 969 970 /* 971 * clear the area of the FB that need to be transparent 972 */ 973 if (!transparent.isEmpty()) { 974 glClearColor(0,0,0,0); 975 Region::const_iterator it = transparent.begin(); 976 Region::const_iterator const end = transparent.end(); 977 const int32_t height = hw.getHeight(); 978 while (it != end) { 979 const Rect& r(*it++); 980 const GLint sy = height - (r.top + r.height()); 981 glScissor(r.left, sy, r.width(), r.height()); 982 glClear(GL_COLOR_BUFFER_BIT); 983 } 984 } 985 } 986} 987 988void SurfaceFlinger::composeSurfaces(const Region& dirty) 989{ 990 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 991 HWComposer& hwc(hw.getHwComposer()); 992 993 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 994 if (UNLIKELY(fbLayerCount && !mWormholeRegion.isEmpty())) { 995 // should never happen unless the window manager has a bug 996 // draw something... 997 drawWormhole(); 998 } 999 1000 /* 1001 * and then, render the layers targeted at the framebuffer 1002 */ 1003 hwc_layer_t* const cur(hwc.getLayers()); 1004 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1005 size_t count = layers.size(); 1006 for (size_t i=0 ; i<count ; i++) { 1007 if (cur && (cur[i].compositionType != HWC_FRAMEBUFFER)) { 1008 continue; 1009 } 1010 const sp<LayerBase>& layer(layers[i]); 1011 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 1012 if (!clip.isEmpty()) { 1013 layer->draw(clip); 1014 } 1015 } 1016} 1017 1018void SurfaceFlinger::debugFlashRegions() 1019{ 1020 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1021 const uint32_t flags = hw.getFlags(); 1022 const int32_t height = hw.getHeight(); 1023 if (mSwapRegion.isEmpty()) { 1024 return; 1025 } 1026 1027 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 1028 (flags & DisplayHardware::BUFFER_PRESERVED))) { 1029 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 1030 mDirtyRegion.bounds() : hw.bounds()); 1031 composeSurfaces(repaint); 1032 } 1033 1034 glDisable(GL_BLEND); 1035 glDisable(GL_DITHER); 1036 glDisable(GL_SCISSOR_TEST); 1037 1038 static int toggle = 0; 1039 toggle = 1 - toggle; 1040 if (toggle) { 1041 glColor4f(1, 0, 1, 1); 1042 } else { 1043 glColor4f(1, 1, 0, 1); 1044 } 1045 1046 Region::const_iterator it = mDirtyRegion.begin(); 1047 Region::const_iterator const end = mDirtyRegion.end(); 1048 while (it != end) { 1049 const Rect& r = *it++; 1050 GLfloat vertices[][2] = { 1051 { r.left, height - r.top }, 1052 { r.left, height - r.bottom }, 1053 { r.right, height - r.bottom }, 1054 { r.right, height - r.top } 1055 }; 1056 glVertexPointer(2, GL_FLOAT, 0, vertices); 1057 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1058 } 1059 1060 hw.flip(mSwapRegion); 1061 1062 if (mDebugRegion > 1) 1063 usleep(mDebugRegion * 1000); 1064 1065 glEnable(GL_SCISSOR_TEST); 1066} 1067 1068void SurfaceFlinger::drawWormhole() const 1069{ 1070 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1071 if (region.isEmpty()) 1072 return; 1073 1074 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1075 const int32_t width = hw.getWidth(); 1076 const int32_t height = hw.getHeight(); 1077 1078 glDisable(GL_BLEND); 1079 glDisable(GL_DITHER); 1080 1081 if (LIKELY(!mDebugBackground)) { 1082 glClearColor(0,0,0,0); 1083 Region::const_iterator it = region.begin(); 1084 Region::const_iterator const end = region.end(); 1085 while (it != end) { 1086 const Rect& r = *it++; 1087 const GLint sy = height - (r.top + r.height()); 1088 glScissor(r.left, sy, r.width(), r.height()); 1089 glClear(GL_COLOR_BUFFER_BIT); 1090 } 1091 } else { 1092 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1093 { width, height }, { 0, height } }; 1094 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1095 glVertexPointer(2, GL_SHORT, 0, vertices); 1096 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1097 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1098#if defined(GL_OES_EGL_image_external) 1099 if (GLExtensions::getInstance().haveTextureExternal()) { 1100 glDisable(GL_TEXTURE_EXTERNAL_OES); 1101 } 1102#endif 1103 glEnable(GL_TEXTURE_2D); 1104 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1105 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1106 glMatrixMode(GL_TEXTURE); 1107 glLoadIdentity(); 1108 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1109 Region::const_iterator it = region.begin(); 1110 Region::const_iterator const end = region.end(); 1111 while (it != end) { 1112 const Rect& r = *it++; 1113 const GLint sy = height - (r.top + r.height()); 1114 glScissor(r.left, sy, r.width(), r.height()); 1115 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1116 } 1117 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1118 glDisable(GL_TEXTURE_2D); 1119 glLoadIdentity(); 1120 glMatrixMode(GL_MODELVIEW); 1121 } 1122} 1123 1124void SurfaceFlinger::debugShowFPS() const 1125{ 1126 static int mFrameCount; 1127 static int mLastFrameCount = 0; 1128 static nsecs_t mLastFpsTime = 0; 1129 static float mFps = 0; 1130 mFrameCount++; 1131 nsecs_t now = systemTime(); 1132 nsecs_t diff = now - mLastFpsTime; 1133 if (diff > ms2ns(250)) { 1134 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1135 mLastFpsTime = now; 1136 mLastFrameCount = mFrameCount; 1137 } 1138 // XXX: mFPS has the value we want 1139 } 1140 1141status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1142{ 1143 Mutex::Autolock _l(mStateLock); 1144 addLayer_l(layer); 1145 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1146 return NO_ERROR; 1147} 1148 1149status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1150{ 1151 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1152 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1153} 1154 1155ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1156 const sp<LayerBaseClient>& lbc) 1157{ 1158 // attach this layer to the client 1159 size_t name = client->attachLayer(lbc); 1160 1161 Mutex::Autolock _l(mStateLock); 1162 1163 // add this layer to the current state list 1164 addLayer_l(lbc); 1165 1166 return ssize_t(name); 1167} 1168 1169status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1170{ 1171 Mutex::Autolock _l(mStateLock); 1172 status_t err = purgatorizeLayer_l(layer); 1173 if (err == NO_ERROR) 1174 setTransactionFlags(eTransactionNeeded); 1175 return err; 1176} 1177 1178status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1179{ 1180 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1181 if (lbc != 0) { 1182 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1183 } 1184 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1185 if (index >= 0) { 1186 mLayersRemoved = true; 1187 return NO_ERROR; 1188 } 1189 return status_t(index); 1190} 1191 1192status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1193{ 1194 // First add the layer to the purgatory list, which makes sure it won't 1195 // go away, then remove it from the main list (through a transaction). 1196 ssize_t err = removeLayer_l(layerBase); 1197 if (err >= 0) { 1198 mLayerPurgatory.add(layerBase); 1199 } 1200 1201 layerBase->onRemoved(); 1202 1203 // it's possible that we don't find a layer, because it might 1204 // have been destroyed already -- this is not technically an error 1205 // from the user because there is a race between Client::destroySurface(), 1206 // ~Client() and ~ISurface(). 1207 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1208} 1209 1210status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1211{ 1212 layer->forceVisibilityTransaction(); 1213 setTransactionFlags(eTraversalNeeded); 1214 return NO_ERROR; 1215} 1216 1217uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1218{ 1219 return android_atomic_release_load(&mTransactionFlags); 1220} 1221 1222uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1223{ 1224 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1225} 1226 1227uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1228{ 1229 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1230 if ((old & flags)==0) { // wake the server up 1231 signalEvent(); 1232 } 1233 return old; 1234} 1235 1236 1237void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state, 1238 int orientation, uint32_t flags) { 1239 Mutex::Autolock _l(mStateLock); 1240 1241 uint32_t transactionFlags = 0; 1242 if (mCurrentState.orientation != orientation) { 1243 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1244 mCurrentState.orientation = orientation; 1245 transactionFlags |= eTransactionNeeded; 1246 } else if (orientation != eOrientationUnchanged) { 1247 LOGW("setTransactionState: ignoring unrecognized orientation: %d", 1248 orientation); 1249 } 1250 } 1251 1252 const size_t count = state.size(); 1253 for (size_t i=0 ; i<count ; i++) { 1254 const ComposerState& s(state[i]); 1255 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1256 transactionFlags |= setClientStateLocked(client, s.state); 1257 } 1258 if (transactionFlags) { 1259 setTransactionFlags(transactionFlags); 1260 } 1261 1262 // if this is a synchronous transaction, wait for it to take effect before 1263 // returning. 1264 if (flags & eSynchronous) { 1265 mTransationPending = true; 1266 } 1267 while (mTransationPending) { 1268 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1269 if (CC_UNLIKELY(err != NO_ERROR)) { 1270 // just in case something goes wrong in SF, return to the 1271 // called after a few seconds. 1272 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1273 mTransationPending = false; 1274 break; 1275 } 1276 } 1277} 1278 1279status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1280{ 1281 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1282 return BAD_VALUE; 1283 1284 Mutex::Autolock _l(mStateLock); 1285 mCurrentState.freezeDisplay = 1; 1286 setTransactionFlags(eTransactionNeeded); 1287 1288 // flags is intended to communicate some sort of animation behavior 1289 // (for instance fading) 1290 return NO_ERROR; 1291} 1292 1293status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1294{ 1295 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1296 return BAD_VALUE; 1297 1298 Mutex::Autolock _l(mStateLock); 1299 mCurrentState.freezeDisplay = 0; 1300 setTransactionFlags(eTransactionNeeded); 1301 1302 // flags is intended to communicate some sort of animation behavior 1303 // (for instance fading) 1304 return NO_ERROR; 1305} 1306 1307int SurfaceFlinger::setOrientation(DisplayID dpy, 1308 int orientation, uint32_t flags) 1309{ 1310 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1311 return BAD_VALUE; 1312 1313 Mutex::Autolock _l(mStateLock); 1314 if (mCurrentState.orientation != orientation) { 1315 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1316 mCurrentState.orientationFlags = flags; 1317 mCurrentState.orientation = orientation; 1318 setTransactionFlags(eTransactionNeeded); 1319 mTransactionCV.wait(mStateLock); 1320 } else { 1321 orientation = BAD_VALUE; 1322 } 1323 } 1324 return orientation; 1325} 1326 1327sp<ISurface> SurfaceFlinger::createSurface( 1328 ISurfaceComposerClient::surface_data_t* params, 1329 const String8& name, 1330 const sp<Client>& client, 1331 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1332 uint32_t flags) 1333{ 1334 sp<LayerBaseClient> layer; 1335 sp<ISurface> surfaceHandle; 1336 1337 if (int32_t(w|h) < 0) { 1338 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1339 int(w), int(h)); 1340 return surfaceHandle; 1341 } 1342 1343 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1344 sp<Layer> normalLayer; 1345 switch (flags & eFXSurfaceMask) { 1346 case eFXSurfaceNormal: 1347 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1348 layer = normalLayer; 1349 break; 1350 case eFXSurfaceBlur: 1351 // for now we treat Blur as Dim, until we can implement it 1352 // efficiently. 1353 case eFXSurfaceDim: 1354 layer = createDimSurface(client, d, w, h, flags); 1355 break; 1356 } 1357 1358 if (layer != 0) { 1359 layer->initStates(w, h, flags); 1360 layer->setName(name); 1361 ssize_t token = addClientLayer(client, layer); 1362 1363 surfaceHandle = layer->getSurface(); 1364 if (surfaceHandle != 0) { 1365 params->token = token; 1366 params->identity = layer->getIdentity(); 1367 if (normalLayer != 0) { 1368 Mutex::Autolock _l(mStateLock); 1369 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1370 } 1371 } 1372 1373 setTransactionFlags(eTransactionNeeded); 1374 } 1375 1376 return surfaceHandle; 1377} 1378 1379sp<Layer> SurfaceFlinger::createNormalSurface( 1380 const sp<Client>& client, DisplayID display, 1381 uint32_t w, uint32_t h, uint32_t flags, 1382 PixelFormat& format) 1383{ 1384 // initialize the surfaces 1385 switch (format) { // TODO: take h/w into account 1386 case PIXEL_FORMAT_TRANSPARENT: 1387 case PIXEL_FORMAT_TRANSLUCENT: 1388 format = PIXEL_FORMAT_RGBA_8888; 1389 break; 1390 case PIXEL_FORMAT_OPAQUE: 1391#ifdef NO_RGBX_8888 1392 format = PIXEL_FORMAT_RGB_565; 1393#else 1394 format = PIXEL_FORMAT_RGBX_8888; 1395#endif 1396 break; 1397 } 1398 1399#ifdef NO_RGBX_8888 1400 if (format == PIXEL_FORMAT_RGBX_8888) 1401 format = PIXEL_FORMAT_RGBA_8888; 1402#endif 1403 1404 sp<Layer> layer = new Layer(this, display, client); 1405 status_t err = layer->setBuffers(w, h, format, flags); 1406 if (LIKELY(err != NO_ERROR)) { 1407 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1408 layer.clear(); 1409 } 1410 return layer; 1411} 1412 1413sp<LayerDim> SurfaceFlinger::createDimSurface( 1414 const sp<Client>& client, DisplayID display, 1415 uint32_t w, uint32_t h, uint32_t flags) 1416{ 1417 sp<LayerDim> layer = new LayerDim(this, display, client); 1418 layer->initStates(w, h, flags); 1419 return layer; 1420} 1421 1422status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1423{ 1424 /* 1425 * called by the window manager, when a surface should be marked for 1426 * destruction. 1427 * 1428 * The surface is removed from the current and drawing lists, but placed 1429 * in the purgatory queue, so it's not destroyed right-away (we need 1430 * to wait for all client's references to go away first). 1431 */ 1432 1433 status_t err = NAME_NOT_FOUND; 1434 Mutex::Autolock _l(mStateLock); 1435 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1436 if (layer != 0) { 1437 err = purgatorizeLayer_l(layer); 1438 if (err == NO_ERROR) { 1439 setTransactionFlags(eTransactionNeeded); 1440 } 1441 } 1442 return err; 1443} 1444 1445status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1446{ 1447 // called by ~ISurface() when all references are gone 1448 status_t err = NO_ERROR; 1449 sp<LayerBaseClient> l(layer.promote()); 1450 if (l != NULL) { 1451 Mutex::Autolock _l(mStateLock); 1452 err = removeLayer_l(l); 1453 if (err == NAME_NOT_FOUND) { 1454 // The surface wasn't in the current list, which means it was 1455 // removed already, which means it is in the purgatory, 1456 // and need to be removed from there. 1457 ssize_t idx = mLayerPurgatory.remove(l); 1458 LOGE_IF(idx < 0, 1459 "layer=%p is not in the purgatory list", l.get()); 1460 } 1461 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1462 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1463 } 1464 return err; 1465} 1466 1467uint32_t SurfaceFlinger::setClientStateLocked( 1468 const sp<Client>& client, 1469 const layer_state_t& s) 1470{ 1471 uint32_t flags = 0; 1472 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1473 if (layer != 0) { 1474 const uint32_t what = s.what; 1475 if (what & ePositionChanged) { 1476 if (layer->setPosition(s.x, s.y)) 1477 flags |= eTraversalNeeded; 1478 } 1479 if (what & eLayerChanged) { 1480 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1481 if (layer->setLayer(s.z)) { 1482 mCurrentState.layersSortedByZ.removeAt(idx); 1483 mCurrentState.layersSortedByZ.add(layer); 1484 // we need traversal (state changed) 1485 // AND transaction (list changed) 1486 flags |= eTransactionNeeded|eTraversalNeeded; 1487 } 1488 } 1489 if (what & eSizeChanged) { 1490 if (layer->setSize(s.w, s.h)) { 1491 flags |= eTraversalNeeded; 1492 } 1493 } 1494 if (what & eAlphaChanged) { 1495 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1496 flags |= eTraversalNeeded; 1497 } 1498 if (what & eMatrixChanged) { 1499 if (layer->setMatrix(s.matrix)) 1500 flags |= eTraversalNeeded; 1501 } 1502 if (what & eTransparentRegionChanged) { 1503 if (layer->setTransparentRegionHint(s.transparentRegion)) 1504 flags |= eTraversalNeeded; 1505 } 1506 if (what & eVisibilityChanged) { 1507 if (layer->setFlags(s.flags, s.mask)) 1508 flags |= eTraversalNeeded; 1509 } 1510 } 1511 return flags; 1512} 1513 1514void SurfaceFlinger::screenReleased(int dpy) 1515{ 1516 // this may be called by a signal handler, we can't do too much in here 1517 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1518 signalEvent(); 1519} 1520 1521void SurfaceFlinger::screenAcquired(int dpy) 1522{ 1523 // this may be called by a signal handler, we can't do too much in here 1524 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1525 signalEvent(); 1526} 1527 1528status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1529{ 1530 const size_t SIZE = 4096; 1531 char buffer[SIZE]; 1532 String8 result; 1533 1534 if (!PermissionCache::checkCallingPermission(sDump)) { 1535 snprintf(buffer, SIZE, "Permission Denial: " 1536 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1537 IPCThreadState::self()->getCallingPid(), 1538 IPCThreadState::self()->getCallingUid()); 1539 result.append(buffer); 1540 } else { 1541 1542 // figure out if we're stuck somewhere 1543 const nsecs_t now = systemTime(); 1544 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1545 const nsecs_t inTransaction(mDebugInTransaction); 1546 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1547 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1548 1549 // Try to get the main lock, but don't insist if we can't 1550 // (this would indicate SF is stuck, but we want to be able to 1551 // print something in dumpsys). 1552 int retry = 3; 1553 while (mStateLock.tryLock()<0 && --retry>=0) { 1554 usleep(1000000); 1555 } 1556 const bool locked(retry >= 0); 1557 if (!locked) { 1558 snprintf(buffer, SIZE, 1559 "SurfaceFlinger appears to be unresponsive, " 1560 "dumping anyways (no locks held)\n"); 1561 result.append(buffer); 1562 } 1563 1564 /* 1565 * Dump the visible layer list 1566 */ 1567 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1568 const size_t count = currentLayers.size(); 1569 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1570 result.append(buffer); 1571 for (size_t i=0 ; i<count ; i++) { 1572 const sp<LayerBase>& layer(currentLayers[i]); 1573 layer->dump(result, buffer, SIZE); 1574 const Layer::State& s(layer->drawingState()); 1575 s.transparentRegion.dump(result, "transparentRegion"); 1576 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1577 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1578 } 1579 1580 /* 1581 * Dump the layers in the purgatory 1582 */ 1583 1584 const size_t purgatorySize = mLayerPurgatory.size(); 1585 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1586 result.append(buffer); 1587 for (size_t i=0 ; i<purgatorySize ; i++) { 1588 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1589 layer->shortDump(result, buffer, SIZE); 1590 } 1591 1592 /* 1593 * Dump SurfaceFlinger global state 1594 */ 1595 1596 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1597 result.append(buffer); 1598 1599 const GLExtensions& extensions(GLExtensions::getInstance()); 1600 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1601 extensions.getVendor(), 1602 extensions.getRenderer(), 1603 extensions.getVersion()); 1604 result.append(buffer); 1605 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1606 result.append(buffer); 1607 1608 mWormholeRegion.dump(result, "WormholeRegion"); 1609 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1610 snprintf(buffer, SIZE, 1611 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1612 mFreezeDisplay?"yes":"no", mFreezeCount, 1613 mCurrentState.orientation, hw.canDraw()); 1614 result.append(buffer); 1615 snprintf(buffer, SIZE, 1616 " last eglSwapBuffers() time: %f us\n" 1617 " last transaction time : %f us\n", 1618 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1619 result.append(buffer); 1620 1621 if (inSwapBuffersDuration || !locked) { 1622 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1623 inSwapBuffersDuration/1000.0); 1624 result.append(buffer); 1625 } 1626 1627 if (inTransactionDuration || !locked) { 1628 snprintf(buffer, SIZE, " transaction time: %f us\n", 1629 inTransactionDuration/1000.0); 1630 result.append(buffer); 1631 } 1632 1633 /* 1634 * Dump HWComposer state 1635 */ 1636 HWComposer& hwc(hw.getHwComposer()); 1637 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1638 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1639 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1640 result.append(buffer); 1641 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1642 1643 /* 1644 * Dump gralloc state 1645 */ 1646 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1647 alloc.dump(result); 1648 hw.dump(result); 1649 1650 if (locked) { 1651 mStateLock.unlock(); 1652 } 1653 } 1654 write(fd, result.string(), result.size()); 1655 return NO_ERROR; 1656} 1657 1658status_t SurfaceFlinger::onTransact( 1659 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1660{ 1661 switch (code) { 1662 case CREATE_CONNECTION: 1663 case SET_TRANSACTION_STATE: 1664 case SET_ORIENTATION: 1665 case FREEZE_DISPLAY: 1666 case UNFREEZE_DISPLAY: 1667 case BOOT_FINISHED: 1668 case TURN_ELECTRON_BEAM_OFF: 1669 case TURN_ELECTRON_BEAM_ON: 1670 { 1671 // codes that require permission check 1672 IPCThreadState* ipc = IPCThreadState::self(); 1673 const int pid = ipc->getCallingPid(); 1674 const int uid = ipc->getCallingUid(); 1675 if ((uid != AID_GRAPHICS) && 1676 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1677 LOGE("Permission Denial: " 1678 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1679 return PERMISSION_DENIED; 1680 } 1681 break; 1682 } 1683 case CAPTURE_SCREEN: 1684 { 1685 // codes that require permission check 1686 IPCThreadState* ipc = IPCThreadState::self(); 1687 const int pid = ipc->getCallingPid(); 1688 const int uid = ipc->getCallingUid(); 1689 if ((uid != AID_GRAPHICS) && 1690 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1691 LOGE("Permission Denial: " 1692 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1693 return PERMISSION_DENIED; 1694 } 1695 break; 1696 } 1697 } 1698 1699 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1700 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1701 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1702 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1703 IPCThreadState* ipc = IPCThreadState::self(); 1704 const int pid = ipc->getCallingPid(); 1705 const int uid = ipc->getCallingUid(); 1706 LOGE("Permission Denial: " 1707 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1708 return PERMISSION_DENIED; 1709 } 1710 int n; 1711 switch (code) { 1712 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1713 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1714 return NO_ERROR; 1715 case 1002: // SHOW_UPDATES 1716 n = data.readInt32(); 1717 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1718 invalidateHwcGeometry(); 1719 repaintEverything(); 1720 return NO_ERROR; 1721 case 1003: // SHOW_BACKGROUND 1722 n = data.readInt32(); 1723 mDebugBackground = n ? 1 : 0; 1724 return NO_ERROR; 1725 case 1004:{ // repaint everything 1726 repaintEverything(); 1727 return NO_ERROR; 1728 } 1729 case 1005:{ // force transaction 1730 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1731 return NO_ERROR; 1732 } 1733 case 1006:{ // enable/disable GraphicLog 1734 int enabled = data.readInt32(); 1735 GraphicLog::getInstance().setEnabled(enabled); 1736 return NO_ERROR; 1737 } 1738 case 1007: // set mFreezeCount 1739 mFreezeCount = data.readInt32(); 1740 mFreezeDisplayTime = 0; 1741 return NO_ERROR; 1742 case 1008: // toggle use of hw composer 1743 n = data.readInt32(); 1744 mDebugDisableHWC = n ? 1 : 0; 1745 invalidateHwcGeometry(); 1746 repaintEverything(); 1747 return NO_ERROR; 1748 case 1009: // toggle use of transform hint 1749 n = data.readInt32(); 1750 mDebugDisableTransformHint = n ? 1 : 0; 1751 invalidateHwcGeometry(); 1752 repaintEverything(); 1753 return NO_ERROR; 1754 case 1010: // interrogate. 1755 reply->writeInt32(0); 1756 reply->writeInt32(0); 1757 reply->writeInt32(mDebugRegion); 1758 reply->writeInt32(mDebugBackground); 1759 return NO_ERROR; 1760 case 1013: { 1761 Mutex::Autolock _l(mStateLock); 1762 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1763 reply->writeInt32(hw.getPageFlipCount()); 1764 } 1765 return NO_ERROR; 1766 } 1767 } 1768 return err; 1769} 1770 1771void SurfaceFlinger::repaintEverything() { 1772 Mutex::Autolock _l(mStateLock); 1773 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1774 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1775 signalEvent(); 1776} 1777 1778// --------------------------------------------------------------------------- 1779 1780status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1781 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1782{ 1783 if (!GLExtensions::getInstance().haveFramebufferObject()) 1784 return INVALID_OPERATION; 1785 1786 // get screen geometry 1787 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1788 const uint32_t hw_w = hw.getWidth(); 1789 const uint32_t hw_h = hw.getHeight(); 1790 GLfloat u = 1; 1791 GLfloat v = 1; 1792 1793 // make sure to clear all GL error flags 1794 while ( glGetError() != GL_NO_ERROR ) ; 1795 1796 // create a FBO 1797 GLuint name, tname; 1798 glGenTextures(1, &tname); 1799 glBindTexture(GL_TEXTURE_2D, tname); 1800 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1801 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1802 if (glGetError() != GL_NO_ERROR) { 1803 while ( glGetError() != GL_NO_ERROR ) ; 1804 GLint tw = (2 << (31 - clz(hw_w))); 1805 GLint th = (2 << (31 - clz(hw_h))); 1806 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1807 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1808 u = GLfloat(hw_w) / tw; 1809 v = GLfloat(hw_h) / th; 1810 } 1811 glGenFramebuffersOES(1, &name); 1812 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1813 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1814 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1815 1816 // redraw the screen entirely... 1817 glClearColor(0,0,0,1); 1818 glClear(GL_COLOR_BUFFER_BIT); 1819 glMatrixMode(GL_MODELVIEW); 1820 glLoadIdentity(); 1821 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1822 const size_t count = layers.size(); 1823 for (size_t i=0 ; i<count ; ++i) { 1824 const sp<LayerBase>& layer(layers[i]); 1825 layer->drawForSreenShot(); 1826 } 1827 1828 // back to main framebuffer 1829 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1830 glDisable(GL_SCISSOR_TEST); 1831 glDeleteFramebuffersOES(1, &name); 1832 1833 *textureName = tname; 1834 *uOut = u; 1835 *vOut = v; 1836 return NO_ERROR; 1837} 1838 1839// --------------------------------------------------------------------------- 1840 1841status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1842{ 1843 status_t result = PERMISSION_DENIED; 1844 1845 if (!GLExtensions::getInstance().haveFramebufferObject()) 1846 return INVALID_OPERATION; 1847 1848 // get screen geometry 1849 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1850 const uint32_t hw_w = hw.getWidth(); 1851 const uint32_t hw_h = hw.getHeight(); 1852 const Region screenBounds(hw.getBounds()); 1853 1854 GLfloat u, v; 1855 GLuint tname; 1856 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1857 if (result != NO_ERROR) { 1858 return result; 1859 } 1860 1861 GLfloat vtx[8]; 1862 const GLfloat texCoords[4][2] = { {0,0}, {0,v}, {u,v}, {u,0} }; 1863 glBindTexture(GL_TEXTURE_2D, tname); 1864 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1865 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1866 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1867 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1868 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1869 glVertexPointer(2, GL_FLOAT, 0, vtx); 1870 1871 /* 1872 * Texture coordinate mapping 1873 * 1874 * u 1875 * 1 +----------+---+ 1876 * | | | | image is inverted 1877 * | V | | w.r.t. the texture 1878 * 1-v +----------+ | coordinates 1879 * | | 1880 * | | 1881 * | | 1882 * 0 +--------------+ 1883 * 0 1 1884 * 1885 */ 1886 1887 class s_curve_interpolator { 1888 const float nbFrames, s, v; 1889 public: 1890 s_curve_interpolator(int nbFrames, float s) 1891 : nbFrames(1.0f / (nbFrames-1)), s(s), 1892 v(1.0f + expf(-s + 0.5f*s)) { 1893 } 1894 float operator()(int f) { 1895 const float x = f * nbFrames; 1896 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1897 } 1898 }; 1899 1900 class v_stretch { 1901 const GLfloat hw_w, hw_h; 1902 public: 1903 v_stretch(uint32_t hw_w, uint32_t hw_h) 1904 : hw_w(hw_w), hw_h(hw_h) { 1905 } 1906 void operator()(GLfloat* vtx, float v) { 1907 const GLfloat w = hw_w + (hw_w * v); 1908 const GLfloat h = hw_h - (hw_h * v); 1909 const GLfloat x = (hw_w - w) * 0.5f; 1910 const GLfloat y = (hw_h - h) * 0.5f; 1911 vtx[0] = x; vtx[1] = y; 1912 vtx[2] = x; vtx[3] = y + h; 1913 vtx[4] = x + w; vtx[5] = y + h; 1914 vtx[6] = x + w; vtx[7] = y; 1915 } 1916 }; 1917 1918 class h_stretch { 1919 const GLfloat hw_w, hw_h; 1920 public: 1921 h_stretch(uint32_t hw_w, uint32_t hw_h) 1922 : hw_w(hw_w), hw_h(hw_h) { 1923 } 1924 void operator()(GLfloat* vtx, float v) { 1925 const GLfloat w = hw_w - (hw_w * v); 1926 const GLfloat h = 1.0f; 1927 const GLfloat x = (hw_w - w) * 0.5f; 1928 const GLfloat y = (hw_h - h) * 0.5f; 1929 vtx[0] = x; vtx[1] = y; 1930 vtx[2] = x; vtx[3] = y + h; 1931 vtx[4] = x + w; vtx[5] = y + h; 1932 vtx[6] = x + w; vtx[7] = y; 1933 } 1934 }; 1935 1936 // the full animation is 24 frames 1937 char value[PROPERTY_VALUE_MAX]; 1938 property_get("debug.sf.electron_frames", value, "24"); 1939 int nbFrames = (atoi(value) + 1) >> 1; 1940 if (nbFrames <= 0) // just in case 1941 nbFrames = 24; 1942 1943 s_curve_interpolator itr(nbFrames, 7.5f); 1944 s_curve_interpolator itg(nbFrames, 8.0f); 1945 s_curve_interpolator itb(nbFrames, 8.5f); 1946 1947 v_stretch vverts(hw_w, hw_h); 1948 1949 glMatrixMode(GL_TEXTURE); 1950 glLoadIdentity(); 1951 glMatrixMode(GL_MODELVIEW); 1952 glLoadIdentity(); 1953 1954 glEnable(GL_BLEND); 1955 glBlendFunc(GL_ONE, GL_ONE); 1956 for (int i=0 ; i<nbFrames ; i++) { 1957 float x, y, w, h; 1958 const float vr = itr(i); 1959 const float vg = itg(i); 1960 const float vb = itb(i); 1961 1962 // clear screen 1963 glColorMask(1,1,1,1); 1964 glClear(GL_COLOR_BUFFER_BIT); 1965 glEnable(GL_TEXTURE_2D); 1966 1967 // draw the red plane 1968 vverts(vtx, vr); 1969 glColorMask(1,0,0,1); 1970 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1971 1972 // draw the green plane 1973 vverts(vtx, vg); 1974 glColorMask(0,1,0,1); 1975 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1976 1977 // draw the blue plane 1978 vverts(vtx, vb); 1979 glColorMask(0,0,1,1); 1980 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1981 1982 // draw the white highlight (we use the last vertices) 1983 glDisable(GL_TEXTURE_2D); 1984 glColorMask(1,1,1,1); 1985 glColor4f(vg, vg, vg, 1); 1986 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1987 hw.flip(screenBounds); 1988 } 1989 1990 h_stretch hverts(hw_w, hw_h); 1991 glDisable(GL_BLEND); 1992 glDisable(GL_TEXTURE_2D); 1993 glColorMask(1,1,1,1); 1994 for (int i=0 ; i<nbFrames ; i++) { 1995 const float v = itg(i); 1996 hverts(vtx, v); 1997 glClear(GL_COLOR_BUFFER_BIT); 1998 glColor4f(1-v, 1-v, 1-v, 1); 1999 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2000 hw.flip(screenBounds); 2001 } 2002 2003 glColorMask(1,1,1,1); 2004 glEnable(GL_SCISSOR_TEST); 2005 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2006 glDeleteTextures(1, &tname); 2007 glDisable(GL_TEXTURE_2D); 2008 return NO_ERROR; 2009} 2010 2011status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 2012{ 2013 status_t result = PERMISSION_DENIED; 2014 2015 if (!GLExtensions::getInstance().haveFramebufferObject()) 2016 return INVALID_OPERATION; 2017 2018 2019 // get screen geometry 2020 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2021 const uint32_t hw_w = hw.getWidth(); 2022 const uint32_t hw_h = hw.getHeight(); 2023 const Region screenBounds(hw.bounds()); 2024 2025 GLfloat u, v; 2026 GLuint tname; 2027 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2028 if (result != NO_ERROR) { 2029 return result; 2030 } 2031 2032 // back to main framebuffer 2033 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2034 glDisable(GL_SCISSOR_TEST); 2035 2036 GLfloat vtx[8]; 2037 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2038 glBindTexture(GL_TEXTURE_2D, tname); 2039 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2040 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2041 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2042 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2043 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2044 glVertexPointer(2, GL_FLOAT, 0, vtx); 2045 2046 class s_curve_interpolator { 2047 const float nbFrames, s, v; 2048 public: 2049 s_curve_interpolator(int nbFrames, float s) 2050 : nbFrames(1.0f / (nbFrames-1)), s(s), 2051 v(1.0f + expf(-s + 0.5f*s)) { 2052 } 2053 float operator()(int f) { 2054 const float x = f * nbFrames; 2055 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2056 } 2057 }; 2058 2059 class v_stretch { 2060 const GLfloat hw_w, hw_h; 2061 public: 2062 v_stretch(uint32_t hw_w, uint32_t hw_h) 2063 : hw_w(hw_w), hw_h(hw_h) { 2064 } 2065 void operator()(GLfloat* vtx, float v) { 2066 const GLfloat w = hw_w + (hw_w * v); 2067 const GLfloat h = hw_h - (hw_h * v); 2068 const GLfloat x = (hw_w - w) * 0.5f; 2069 const GLfloat y = (hw_h - h) * 0.5f; 2070 vtx[0] = x; vtx[1] = y; 2071 vtx[2] = x; vtx[3] = y + h; 2072 vtx[4] = x + w; vtx[5] = y + h; 2073 vtx[6] = x + w; vtx[7] = y; 2074 } 2075 }; 2076 2077 class h_stretch { 2078 const GLfloat hw_w, hw_h; 2079 public: 2080 h_stretch(uint32_t hw_w, uint32_t hw_h) 2081 : hw_w(hw_w), hw_h(hw_h) { 2082 } 2083 void operator()(GLfloat* vtx, float v) { 2084 const GLfloat w = hw_w - (hw_w * v); 2085 const GLfloat h = 1.0f; 2086 const GLfloat x = (hw_w - w) * 0.5f; 2087 const GLfloat y = (hw_h - h) * 0.5f; 2088 vtx[0] = x; vtx[1] = y; 2089 vtx[2] = x; vtx[3] = y + h; 2090 vtx[4] = x + w; vtx[5] = y + h; 2091 vtx[6] = x + w; vtx[7] = y; 2092 } 2093 }; 2094 2095 // the full animation is 12 frames 2096 int nbFrames = 8; 2097 s_curve_interpolator itr(nbFrames, 7.5f); 2098 s_curve_interpolator itg(nbFrames, 8.0f); 2099 s_curve_interpolator itb(nbFrames, 8.5f); 2100 2101 h_stretch hverts(hw_w, hw_h); 2102 glDisable(GL_BLEND); 2103 glDisable(GL_TEXTURE_2D); 2104 glColorMask(1,1,1,1); 2105 for (int i=nbFrames-1 ; i>=0 ; i--) { 2106 const float v = itg(i); 2107 hverts(vtx, v); 2108 glClear(GL_COLOR_BUFFER_BIT); 2109 glColor4f(1-v, 1-v, 1-v, 1); 2110 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2111 hw.flip(screenBounds); 2112 } 2113 2114 nbFrames = 4; 2115 v_stretch vverts(hw_w, hw_h); 2116 glEnable(GL_BLEND); 2117 glBlendFunc(GL_ONE, GL_ONE); 2118 for (int i=nbFrames-1 ; i>=0 ; i--) { 2119 float x, y, w, h; 2120 const float vr = itr(i); 2121 const float vg = itg(i); 2122 const float vb = itb(i); 2123 2124 // clear screen 2125 glColorMask(1,1,1,1); 2126 glClear(GL_COLOR_BUFFER_BIT); 2127 glEnable(GL_TEXTURE_2D); 2128 2129 // draw the red plane 2130 vverts(vtx, vr); 2131 glColorMask(1,0,0,1); 2132 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2133 2134 // draw the green plane 2135 vverts(vtx, vg); 2136 glColorMask(0,1,0,1); 2137 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2138 2139 // draw the blue plane 2140 vverts(vtx, vb); 2141 glColorMask(0,0,1,1); 2142 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2143 2144 hw.flip(screenBounds); 2145 } 2146 2147 glColorMask(1,1,1,1); 2148 glEnable(GL_SCISSOR_TEST); 2149 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2150 glDeleteTextures(1, &tname); 2151 glDisable(GL_TEXTURE_2D); 2152 2153 return NO_ERROR; 2154} 2155 2156// --------------------------------------------------------------------------- 2157 2158status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2159{ 2160 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2161 if (!hw.canDraw()) { 2162 // we're already off 2163 return NO_ERROR; 2164 } 2165 2166 // turn off hwc while we're doing the animation 2167 hw.getHwComposer().disable(); 2168 // and make sure to turn it back on (if needed) next time we compose 2169 invalidateHwcGeometry(); 2170 2171 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2172 electronBeamOffAnimationImplLocked(); 2173 } 2174 2175 // always clear the whole screen at the end of the animation 2176 glClearColor(0,0,0,1); 2177 glDisable(GL_SCISSOR_TEST); 2178 glClear(GL_COLOR_BUFFER_BIT); 2179 glEnable(GL_SCISSOR_TEST); 2180 hw.flip( Region(hw.bounds()) ); 2181 2182 return NO_ERROR; 2183} 2184 2185status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2186{ 2187 class MessageTurnElectronBeamOff : public MessageBase { 2188 SurfaceFlinger* flinger; 2189 int32_t mode; 2190 status_t result; 2191 public: 2192 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2193 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2194 } 2195 status_t getResult() const { 2196 return result; 2197 } 2198 virtual bool handler() { 2199 Mutex::Autolock _l(flinger->mStateLock); 2200 result = flinger->turnElectronBeamOffImplLocked(mode); 2201 return true; 2202 } 2203 }; 2204 2205 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2206 status_t res = postMessageSync(msg); 2207 if (res == NO_ERROR) { 2208 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2209 2210 // work-around: when the power-manager calls us we activate the 2211 // animation. eventually, the "on" animation will be called 2212 // by the power-manager itself 2213 mElectronBeamAnimationMode = mode; 2214 } 2215 return res; 2216} 2217 2218// --------------------------------------------------------------------------- 2219 2220status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2221{ 2222 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2223 if (hw.canDraw()) { 2224 // we're already on 2225 return NO_ERROR; 2226 } 2227 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2228 electronBeamOnAnimationImplLocked(); 2229 } 2230 2231 // make sure to redraw the whole screen when the animation is done 2232 mDirtyRegion.set(hw.bounds()); 2233 signalEvent(); 2234 2235 return NO_ERROR; 2236} 2237 2238status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2239{ 2240 class MessageTurnElectronBeamOn : public MessageBase { 2241 SurfaceFlinger* flinger; 2242 int32_t mode; 2243 status_t result; 2244 public: 2245 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2246 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2247 } 2248 status_t getResult() const { 2249 return result; 2250 } 2251 virtual bool handler() { 2252 Mutex::Autolock _l(flinger->mStateLock); 2253 result = flinger->turnElectronBeamOnImplLocked(mode); 2254 return true; 2255 } 2256 }; 2257 2258 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2259 return NO_ERROR; 2260} 2261 2262// --------------------------------------------------------------------------- 2263 2264status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2265 sp<IMemoryHeap>* heap, 2266 uint32_t* w, uint32_t* h, PixelFormat* f, 2267 uint32_t sw, uint32_t sh, 2268 uint32_t minLayerZ, uint32_t maxLayerZ) 2269{ 2270 status_t result = PERMISSION_DENIED; 2271 2272 // only one display supported for now 2273 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2274 return BAD_VALUE; 2275 2276 if (!GLExtensions::getInstance().haveFramebufferObject()) 2277 return INVALID_OPERATION; 2278 2279 // get screen geometry 2280 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2281 const uint32_t hw_w = hw.getWidth(); 2282 const uint32_t hw_h = hw.getHeight(); 2283 2284 if ((sw > hw_w) || (sh > hw_h)) 2285 return BAD_VALUE; 2286 2287 sw = (!sw) ? hw_w : sw; 2288 sh = (!sh) ? hw_h : sh; 2289 const size_t size = sw * sh * 4; 2290 2291 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2292 // sw, sh, minLayerZ, maxLayerZ); 2293 2294 // make sure to clear all GL error flags 2295 while ( glGetError() != GL_NO_ERROR ) ; 2296 2297 // create a FBO 2298 GLuint name, tname; 2299 glGenRenderbuffersOES(1, &tname); 2300 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2301 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2302 glGenFramebuffersOES(1, &name); 2303 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2304 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2305 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2306 2307 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2308 2309 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2310 2311 // invert everything, b/c glReadPixel() below will invert the FB 2312 glViewport(0, 0, sw, sh); 2313 glScissor(0, 0, sw, sh); 2314 glEnable(GL_SCISSOR_TEST); 2315 glMatrixMode(GL_PROJECTION); 2316 glPushMatrix(); 2317 glLoadIdentity(); 2318 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2319 glMatrixMode(GL_MODELVIEW); 2320 2321 // redraw the screen entirely... 2322 glClearColor(0,0,0,1); 2323 glClear(GL_COLOR_BUFFER_BIT); 2324 2325 const LayerVector& layers(mDrawingState.layersSortedByZ); 2326 const size_t count = layers.size(); 2327 for (size_t i=0 ; i<count ; ++i) { 2328 const sp<LayerBase>& layer(layers[i]); 2329 const uint32_t flags = layer->drawingState().flags; 2330 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2331 const uint32_t z = layer->drawingState().z; 2332 if (z >= minLayerZ && z <= maxLayerZ) { 2333 layer->drawForSreenShot(); 2334 } 2335 } 2336 } 2337 2338 // XXX: this is needed on tegra 2339 glEnable(GL_SCISSOR_TEST); 2340 glScissor(0, 0, sw, sh); 2341 2342 // check for errors and return screen capture 2343 if (glGetError() != GL_NO_ERROR) { 2344 // error while rendering 2345 result = INVALID_OPERATION; 2346 } else { 2347 // allocate shared memory large enough to hold the 2348 // screen capture 2349 sp<MemoryHeapBase> base( 2350 new MemoryHeapBase(size, 0, "screen-capture") ); 2351 void* const ptr = base->getBase(); 2352 if (ptr) { 2353 // capture the screen with glReadPixels() 2354 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2355 if (glGetError() == GL_NO_ERROR) { 2356 *heap = base; 2357 *w = sw; 2358 *h = sh; 2359 *f = PIXEL_FORMAT_RGBA_8888; 2360 result = NO_ERROR; 2361 } 2362 } else { 2363 result = NO_MEMORY; 2364 } 2365 } 2366 glEnable(GL_SCISSOR_TEST); 2367 glViewport(0, 0, hw_w, hw_h); 2368 glMatrixMode(GL_PROJECTION); 2369 glPopMatrix(); 2370 glMatrixMode(GL_MODELVIEW); 2371 } else { 2372 result = BAD_VALUE; 2373 } 2374 2375 // release FBO resources 2376 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2377 glDeleteRenderbuffersOES(1, &tname); 2378 glDeleteFramebuffersOES(1, &name); 2379 2380 hw.compositionComplete(); 2381 2382 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2383 2384 return result; 2385} 2386 2387 2388status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2389 sp<IMemoryHeap>* heap, 2390 uint32_t* width, uint32_t* height, PixelFormat* format, 2391 uint32_t sw, uint32_t sh, 2392 uint32_t minLayerZ, uint32_t maxLayerZ) 2393{ 2394 // only one display supported for now 2395 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2396 return BAD_VALUE; 2397 2398 if (!GLExtensions::getInstance().haveFramebufferObject()) 2399 return INVALID_OPERATION; 2400 2401 class MessageCaptureScreen : public MessageBase { 2402 SurfaceFlinger* flinger; 2403 DisplayID dpy; 2404 sp<IMemoryHeap>* heap; 2405 uint32_t* w; 2406 uint32_t* h; 2407 PixelFormat* f; 2408 uint32_t sw; 2409 uint32_t sh; 2410 uint32_t minLayerZ; 2411 uint32_t maxLayerZ; 2412 status_t result; 2413 public: 2414 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2415 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2416 uint32_t sw, uint32_t sh, 2417 uint32_t minLayerZ, uint32_t maxLayerZ) 2418 : flinger(flinger), dpy(dpy), 2419 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2420 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2421 result(PERMISSION_DENIED) 2422 { 2423 } 2424 status_t getResult() const { 2425 return result; 2426 } 2427 virtual bool handler() { 2428 Mutex::Autolock _l(flinger->mStateLock); 2429 2430 // if we have secure windows, never allow the screen capture 2431 if (flinger->mSecureFrameBuffer) 2432 return true; 2433 2434 result = flinger->captureScreenImplLocked(dpy, 2435 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2436 2437 return true; 2438 } 2439 }; 2440 2441 sp<MessageBase> msg = new MessageCaptureScreen(this, 2442 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2443 status_t res = postMessageSync(msg); 2444 if (res == NO_ERROR) { 2445 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2446 } 2447 return res; 2448} 2449 2450// --------------------------------------------------------------------------- 2451 2452sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2453{ 2454 sp<Layer> result; 2455 Mutex::Autolock _l(mStateLock); 2456 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2457 return result; 2458} 2459 2460// --------------------------------------------------------------------------- 2461 2462Client::Client(const sp<SurfaceFlinger>& flinger) 2463 : mFlinger(flinger), mNameGenerator(1) 2464{ 2465} 2466 2467Client::~Client() 2468{ 2469 const size_t count = mLayers.size(); 2470 for (size_t i=0 ; i<count ; i++) { 2471 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2472 if (layer != 0) { 2473 mFlinger->removeLayer(layer); 2474 } 2475 } 2476} 2477 2478status_t Client::initCheck() const { 2479 return NO_ERROR; 2480} 2481 2482size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2483{ 2484 Mutex::Autolock _l(mLock); 2485 size_t name = mNameGenerator++; 2486 mLayers.add(name, layer); 2487 return name; 2488} 2489 2490void Client::detachLayer(const LayerBaseClient* layer) 2491{ 2492 Mutex::Autolock _l(mLock); 2493 // we do a linear search here, because this doesn't happen often 2494 const size_t count = mLayers.size(); 2495 for (size_t i=0 ; i<count ; i++) { 2496 if (mLayers.valueAt(i) == layer) { 2497 mLayers.removeItemsAt(i, 1); 2498 break; 2499 } 2500 } 2501} 2502sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2503{ 2504 Mutex::Autolock _l(mLock); 2505 sp<LayerBaseClient> lbc; 2506 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2507 if (layer != 0) { 2508 lbc = layer.promote(); 2509 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2510 } 2511 return lbc; 2512} 2513 2514 2515status_t Client::onTransact( 2516 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2517{ 2518 // these must be checked 2519 IPCThreadState* ipc = IPCThreadState::self(); 2520 const int pid = ipc->getCallingPid(); 2521 const int uid = ipc->getCallingUid(); 2522 const int self_pid = getpid(); 2523 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2524 // we're called from a different process, do the real check 2525 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2526 { 2527 LOGE("Permission Denial: " 2528 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2529 return PERMISSION_DENIED; 2530 } 2531 } 2532 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2533} 2534 2535 2536sp<ISurface> Client::createSurface( 2537 ISurfaceComposerClient::surface_data_t* params, 2538 const String8& name, 2539 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2540 uint32_t flags) 2541{ 2542 /* 2543 * createSurface must be called from the GL thread so that it can 2544 * have access to the GL context. 2545 */ 2546 2547 class MessageCreateSurface : public MessageBase { 2548 sp<ISurface> result; 2549 SurfaceFlinger* flinger; 2550 ISurfaceComposerClient::surface_data_t* params; 2551 Client* client; 2552 const String8& name; 2553 DisplayID display; 2554 uint32_t w, h; 2555 PixelFormat format; 2556 uint32_t flags; 2557 public: 2558 MessageCreateSurface(SurfaceFlinger* flinger, 2559 ISurfaceComposerClient::surface_data_t* params, 2560 const String8& name, Client* client, 2561 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2562 uint32_t flags) 2563 : flinger(flinger), params(params), client(client), name(name), 2564 display(display), w(w), h(h), format(format), flags(flags) 2565 { 2566 } 2567 sp<ISurface> getResult() const { return result; } 2568 virtual bool handler() { 2569 result = flinger->createSurface(params, name, client, 2570 display, w, h, format, flags); 2571 return true; 2572 } 2573 }; 2574 2575 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2576 params, name, this, display, w, h, format, flags); 2577 mFlinger->postMessageSync(msg); 2578 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2579} 2580status_t Client::destroySurface(SurfaceID sid) { 2581 return mFlinger->removeSurface(this, sid); 2582} 2583 2584// --------------------------------------------------------------------------- 2585 2586GraphicBufferAlloc::GraphicBufferAlloc() {} 2587 2588GraphicBufferAlloc::~GraphicBufferAlloc() {} 2589 2590sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2591 PixelFormat format, uint32_t usage, status_t* error) { 2592 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2593 status_t err = graphicBuffer->initCheck(); 2594 *error = err; 2595 if (err != 0 || graphicBuffer->handle == 0) { 2596 if (err == NO_MEMORY) { 2597 GraphicBuffer::dumpAllocationsToSystemLog(); 2598 } 2599 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2600 "failed (%s), handle=%p", 2601 w, h, strerror(-err), graphicBuffer->handle); 2602 return 0; 2603 } 2604 return graphicBuffer; 2605} 2606 2607// --------------------------------------------------------------------------- 2608 2609GraphicPlane::GraphicPlane() 2610 : mHw(0) 2611{ 2612} 2613 2614GraphicPlane::~GraphicPlane() { 2615 delete mHw; 2616} 2617 2618bool GraphicPlane::initialized() const { 2619 return mHw ? true : false; 2620} 2621 2622int GraphicPlane::getWidth() const { 2623 return mWidth; 2624} 2625 2626int GraphicPlane::getHeight() const { 2627 return mHeight; 2628} 2629 2630void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2631{ 2632 mHw = hw; 2633 2634 // initialize the display orientation transform. 2635 // it's a constant that should come from the display driver. 2636 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2637 char property[PROPERTY_VALUE_MAX]; 2638 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2639 //displayOrientation 2640 switch (atoi(property)) { 2641 case 90: 2642 displayOrientation = ISurfaceComposer::eOrientation90; 2643 break; 2644 case 270: 2645 displayOrientation = ISurfaceComposer::eOrientation270; 2646 break; 2647 } 2648 } 2649 2650 const float w = hw->getWidth(); 2651 const float h = hw->getHeight(); 2652 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2653 &mDisplayTransform); 2654 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2655 mDisplayWidth = h; 2656 mDisplayHeight = w; 2657 } else { 2658 mDisplayWidth = w; 2659 mDisplayHeight = h; 2660 } 2661 2662 setOrientation(ISurfaceComposer::eOrientationDefault); 2663} 2664 2665status_t GraphicPlane::orientationToTransfrom( 2666 int orientation, int w, int h, Transform* tr) 2667{ 2668 uint32_t flags = 0; 2669 switch (orientation) { 2670 case ISurfaceComposer::eOrientationDefault: 2671 flags = Transform::ROT_0; 2672 break; 2673 case ISurfaceComposer::eOrientation90: 2674 flags = Transform::ROT_90; 2675 break; 2676 case ISurfaceComposer::eOrientation180: 2677 flags = Transform::ROT_180; 2678 break; 2679 case ISurfaceComposer::eOrientation270: 2680 flags = Transform::ROT_270; 2681 break; 2682 default: 2683 return BAD_VALUE; 2684 } 2685 tr->set(flags, w, h); 2686 return NO_ERROR; 2687} 2688 2689status_t GraphicPlane::setOrientation(int orientation) 2690{ 2691 // If the rotation can be handled in hardware, this is where 2692 // the magic should happen. 2693 2694 const DisplayHardware& hw(displayHardware()); 2695 const float w = mDisplayWidth; 2696 const float h = mDisplayHeight; 2697 mWidth = int(w); 2698 mHeight = int(h); 2699 2700 Transform orientationTransform; 2701 GraphicPlane::orientationToTransfrom(orientation, w, h, 2702 &orientationTransform); 2703 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2704 mWidth = int(h); 2705 mHeight = int(w); 2706 } 2707 2708 mOrientation = orientation; 2709 mGlobalTransform = mDisplayTransform * orientationTransform; 2710 return NO_ERROR; 2711} 2712 2713const DisplayHardware& GraphicPlane::displayHardware() const { 2714 return *mHw; 2715} 2716 2717DisplayHardware& GraphicPlane::editDisplayHardware() { 2718 return *mHw; 2719} 2720 2721const Transform& GraphicPlane::transform() const { 2722 return mGlobalTransform; 2723} 2724 2725EGLDisplay GraphicPlane::getEGLDisplay() const { 2726 return mHw->getEGLDisplay(); 2727} 2728 2729// --------------------------------------------------------------------------- 2730 2731}; // namespace android 2732