SurfaceFlinger.cpp revision f171ab6da9cf9793093e50947aacdab8f2b0c9b2
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 "LayerScreenshot.h" 54#include "SurfaceFlinger.h" 55 56#include "DisplayHardware/DisplayHardware.h" 57#include "DisplayHardware/HWComposer.h" 58 59#include <private/surfaceflinger/SharedBufferStack.h> 60 61/* ideally AID_GRAPHICS would be in a semi-public header 62 * or there would be a way to map a user/group name to its id 63 */ 64#ifndef AID_GRAPHICS 65#define AID_GRAPHICS 1003 66#endif 67 68#define DISPLAY_COUNT 1 69 70namespace android { 71// --------------------------------------------------------------------------- 72 73const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 74const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 75const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 76const String16 sDump("android.permission.DUMP"); 77 78// --------------------------------------------------------------------------- 79 80SurfaceFlinger::SurfaceFlinger() 81 : BnSurfaceComposer(), Thread(false), 82 mTransactionFlags(0), 83 mResizeTransationPending(false), 84 mLayersRemoved(false), 85 mBootTime(systemTime()), 86 mVisibleRegionsDirty(false), 87 mHwWorkListDirty(false), 88 mFreezeDisplay(false), 89 mElectronBeamAnimationMode(0), 90 mFreezeCount(0), 91 mFreezeDisplayTime(0), 92 mDebugRegion(0), 93 mDebugBackground(0), 94 mDebugDDMS(0), 95 mDebugDisableHWC(0), 96 mDebugDisableTransformHint(0), 97 mDebugInSwapBuffers(0), 98 mLastSwapBufferTime(0), 99 mDebugInTransaction(0), 100 mLastTransactionTime(0), 101 mBootFinished(false), 102 mConsoleSignals(0), 103 mSecureFrameBuffer(0) 104{ 105 init(); 106} 107 108void SurfaceFlinger::init() 109{ 110 LOGI("SurfaceFlinger is starting"); 111 112 // debugging stuff... 113 char value[PROPERTY_VALUE_MAX]; 114 115 property_get("debug.sf.showupdates", value, "0"); 116 mDebugRegion = atoi(value); 117 118 property_get("debug.sf.showbackground", value, "0"); 119 mDebugBackground = atoi(value); 120 121 property_get("debug.sf.ddms", value, "0"); 122 mDebugDDMS = atoi(value); 123 if (mDebugDDMS) { 124 DdmConnection::start(getServiceName()); 125 } 126 127 LOGI_IF(mDebugRegion, "showupdates enabled"); 128 LOGI_IF(mDebugBackground, "showbackground enabled"); 129 LOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 130} 131 132SurfaceFlinger::~SurfaceFlinger() 133{ 134 glDeleteTextures(1, &mWormholeTexName); 135} 136 137sp<IMemoryHeap> SurfaceFlinger::getCblk() const 138{ 139 return mServerHeap; 140} 141 142sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 143{ 144 sp<ISurfaceComposerClient> bclient; 145 sp<Client> client(new Client(this)); 146 status_t err = client->initCheck(); 147 if (err == NO_ERROR) { 148 bclient = client; 149 } 150 return bclient; 151} 152 153sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 154{ 155 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 156 return gba; 157} 158 159const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 160{ 161 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 162 const GraphicPlane& plane(mGraphicPlanes[dpy]); 163 return plane; 164} 165 166GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 167{ 168 return const_cast<GraphicPlane&>( 169 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 170} 171 172void SurfaceFlinger::bootFinished() 173{ 174 const nsecs_t now = systemTime(); 175 const nsecs_t duration = now - mBootTime; 176 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 177 mBootFinished = true; 178 179 // wait patiently for the window manager death 180 const String16 name("window"); 181 sp<IBinder> window(defaultServiceManager()->getService(name)); 182 if (window != 0) { 183 window->linkToDeath(this); 184 } 185 186 // stop boot animation 187 property_set("ctl.stop", "bootanim"); 188} 189 190void SurfaceFlinger::binderDied(const wp<IBinder>& who) 191{ 192 // the window manager died on us. prepare its eulogy. 193 194 // unfreeze the screen in case it was... frozen 195 mFreezeDisplayTime = 0; 196 mFreezeCount = 0; 197 mFreezeDisplay = false; 198 199 // reset screen orientation 200 setOrientation(0, eOrientationDefault, 0); 201 202 // restart the boot-animation 203 property_set("ctl.start", "bootanim"); 204} 205 206void SurfaceFlinger::onFirstRef() 207{ 208 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 209 210 // Wait for the main thread to be done with its initialization 211 mReadyToRunBarrier.wait(); 212} 213 214static inline uint16_t pack565(int r, int g, int b) { 215 return (r<<11)|(g<<5)|b; 216} 217 218status_t SurfaceFlinger::readyToRun() 219{ 220 LOGI( "SurfaceFlinger's main thread ready to run. " 221 "Initializing graphics H/W..."); 222 223 // we only support one display currently 224 int dpy = 0; 225 226 { 227 // initialize the main display 228 GraphicPlane& plane(graphicPlane(dpy)); 229 DisplayHardware* const hw = new DisplayHardware(this, dpy); 230 plane.setDisplayHardware(hw); 231 } 232 233 // create the shared control-block 234 mServerHeap = new MemoryHeapBase(4096, 235 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 236 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 237 238 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 239 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 240 241 new(mServerCblk) surface_flinger_cblk_t; 242 243 // initialize primary screen 244 // (other display should be initialized in the same manner, but 245 // asynchronously, as they could come and go. None of this is supported 246 // yet). 247 const GraphicPlane& plane(graphicPlane(dpy)); 248 const DisplayHardware& hw = plane.displayHardware(); 249 const uint32_t w = hw.getWidth(); 250 const uint32_t h = hw.getHeight(); 251 const uint32_t f = hw.getFormat(); 252 hw.makeCurrent(); 253 254 // initialize the shared control block 255 mServerCblk->connected |= 1<<dpy; 256 display_cblk_t* dcblk = mServerCblk->displays + dpy; 257 memset(dcblk, 0, sizeof(display_cblk_t)); 258 dcblk->w = plane.getWidth(); 259 dcblk->h = plane.getHeight(); 260 dcblk->format = f; 261 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 262 dcblk->xdpi = hw.getDpiX(); 263 dcblk->ydpi = hw.getDpiY(); 264 dcblk->fps = hw.getRefreshRate(); 265 dcblk->density = hw.getDensity(); 266 267 // Initialize OpenGL|ES 268 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 269 glPixelStorei(GL_PACK_ALIGNMENT, 4); 270 glEnableClientState(GL_VERTEX_ARRAY); 271 glEnable(GL_SCISSOR_TEST); 272 glShadeModel(GL_FLAT); 273 glDisable(GL_DITHER); 274 glDisable(GL_CULL_FACE); 275 276 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 277 const uint16_t g1 = pack565(0x17,0x2f,0x17); 278 const uint16_t wormholeTexData[4] = { g0, g1, g1, g0 }; 279 glGenTextures(1, &mWormholeTexName); 280 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 281 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 282 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 283 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 284 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 285 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 286 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, wormholeTexData); 287 288 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 289 glGenTextures(1, &mProtectedTexName); 290 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 291 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 292 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 293 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 294 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 295 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 296 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 297 298 glViewport(0, 0, w, h); 299 glMatrixMode(GL_PROJECTION); 300 glLoadIdentity(); 301 // put the origin in the left-bottom corner 302 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 303 304 mReadyToRunBarrier.open(); 305 306 /* 307 * We're now ready to accept clients... 308 */ 309 310 // start boot animation 311 property_set("ctl.start", "bootanim"); 312 313 return NO_ERROR; 314} 315 316// ---------------------------------------------------------------------------- 317#if 0 318#pragma mark - 319#pragma mark Events Handler 320#endif 321 322void SurfaceFlinger::waitForEvent() 323{ 324 while (true) { 325 nsecs_t timeout = -1; 326 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 327 if (UNLIKELY(isFrozen())) { 328 // wait 5 seconds 329 const nsecs_t now = systemTime(); 330 if (mFreezeDisplayTime == 0) { 331 mFreezeDisplayTime = now; 332 } 333 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 334 timeout = waitTime>0 ? waitTime : 0; 335 } 336 337 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 338 339 // see if we timed out 340 if (isFrozen()) { 341 const nsecs_t now = systemTime(); 342 nsecs_t frozenTime = (now - mFreezeDisplayTime); 343 if (frozenTime >= freezeDisplayTimeout) { 344 // we timed out and are still frozen 345 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 346 mFreezeDisplay, mFreezeCount); 347 mFreezeDisplayTime = 0; 348 mFreezeCount = 0; 349 mFreezeDisplay = false; 350 } 351 } 352 353 if (msg != 0) { 354 switch (msg->what) { 355 case MessageQueue::INVALIDATE: 356 // invalidate message, just return to the main loop 357 return; 358 } 359 } 360 } 361} 362 363void SurfaceFlinger::signalEvent() { 364 mEventQueue.invalidate(); 365} 366 367bool SurfaceFlinger::authenticateSurfaceTexture( 368 const sp<ISurfaceTexture>& surfaceTexture) const { 369 Mutex::Autolock _l(mStateLock); 370 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 371 372 // Check the visible layer list for the ISurface 373 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 374 size_t count = currentLayers.size(); 375 for (size_t i=0 ; i<count ; i++) { 376 const sp<LayerBase>& layer(currentLayers[i]); 377 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 378 if (lbc != NULL) { 379 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 380 if (lbcBinder == surfaceTextureBinder) { 381 return true; 382 } 383 } 384 } 385 386 // Check the layers in the purgatory. This check is here so that if a 387 // SurfaceTexture gets destroyed before all the clients are done using it, 388 // the error will not be reported as "surface XYZ is not authenticated", but 389 // will instead fail later on when the client tries to use the surface, 390 // which should be reported as "surface XYZ returned an -ENODEV". The 391 // purgatorized layers are no less authentic than the visible ones, so this 392 // should not cause any harm. 393 size_t purgatorySize = mLayerPurgatory.size(); 394 for (size_t i=0 ; i<purgatorySize ; i++) { 395 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 396 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 397 if (lbc != NULL) { 398 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 399 if (lbcBinder == surfaceTextureBinder) { 400 return true; 401 } 402 } 403 } 404 405 return false; 406} 407 408status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 409 nsecs_t reltime, uint32_t flags) 410{ 411 return mEventQueue.postMessage(msg, reltime, flags); 412} 413 414status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 415 nsecs_t reltime, uint32_t flags) 416{ 417 status_t res = mEventQueue.postMessage(msg, reltime, flags); 418 if (res == NO_ERROR) { 419 msg->wait(); 420 } 421 return res; 422} 423 424// ---------------------------------------------------------------------------- 425#if 0 426#pragma mark - 427#pragma mark Main loop 428#endif 429 430bool SurfaceFlinger::threadLoop() 431{ 432 waitForEvent(); 433 434 // check for transactions 435 if (UNLIKELY(mConsoleSignals)) { 436 handleConsoleEvents(); 437 } 438 439 // if we're in a global transaction, don't do anything. 440 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 441 uint32_t transactionFlags = peekTransactionFlags(mask); 442 if (UNLIKELY(transactionFlags)) { 443 handleTransaction(transactionFlags); 444 } 445 446 // post surfaces (if needed) 447 handlePageFlip(); 448 449 if (UNLIKELY(mHwWorkListDirty)) { 450 // build the h/w work list 451 handleWorkList(); 452 } 453 454 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 455 if (LIKELY(hw.canDraw() && !isFrozen())) { 456 // repaint the framebuffer (if needed) 457 458 const int index = hw.getCurrentBufferIndex(); 459 GraphicLog& logger(GraphicLog::getInstance()); 460 461 logger.log(GraphicLog::SF_REPAINT, index); 462 handleRepaint(); 463 464 // inform the h/w that we're done compositing 465 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 466 hw.compositionComplete(); 467 468 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 469 postFramebuffer(); 470 471 logger.log(GraphicLog::SF_REPAINT_DONE, index); 472 } else { 473 // pretend we did the post 474 hw.compositionComplete(); 475 usleep(16667); // 60 fps period 476 } 477 return true; 478} 479 480void SurfaceFlinger::postFramebuffer() 481{ 482 if (!mSwapRegion.isEmpty()) { 483 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 484 const nsecs_t now = systemTime(); 485 mDebugInSwapBuffers = now; 486 hw.flip(mSwapRegion); 487 mLastSwapBufferTime = systemTime() - now; 488 mDebugInSwapBuffers = 0; 489 mSwapRegion.clear(); 490 } 491} 492 493void SurfaceFlinger::handleConsoleEvents() 494{ 495 // something to do with the console 496 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 497 498 int what = android_atomic_and(0, &mConsoleSignals); 499 if (what & eConsoleAcquired) { 500 hw.acquireScreen(); 501 // this is a temporary work-around, eventually this should be called 502 // by the power-manager 503 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 504 } 505 506 if (what & eConsoleReleased) { 507 if (hw.isScreenAcquired()) { 508 hw.releaseScreen(); 509 } 510 } 511 512 mDirtyRegion.set(hw.bounds()); 513} 514 515void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 516{ 517 Mutex::Autolock _l(mStateLock); 518 const nsecs_t now = systemTime(); 519 mDebugInTransaction = now; 520 521 // Here we're guaranteed that some transaction flags are set 522 // so we can call handleTransactionLocked() unconditionally. 523 // We call getTransactionFlags(), which will also clear the flags, 524 // with mStateLock held to guarantee that mCurrentState won't change 525 // until the transaction is committed. 526 527 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 528 transactionFlags = getTransactionFlags(mask); 529 handleTransactionLocked(transactionFlags); 530 531 mLastTransactionTime = systemTime() - now; 532 mDebugInTransaction = 0; 533 invalidateHwcGeometry(); 534 // here the transaction has been committed 535} 536 537void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 538{ 539 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 540 const size_t count = currentLayers.size(); 541 542 /* 543 * Traversal of the children 544 * (perform the transaction for each of them if needed) 545 */ 546 547 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 548 if (layersNeedTransaction) { 549 for (size_t i=0 ; i<count ; i++) { 550 const sp<LayerBase>& layer = currentLayers[i]; 551 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 552 if (!trFlags) continue; 553 554 const uint32_t flags = layer->doTransaction(0); 555 if (flags & Layer::eVisibleRegion) 556 mVisibleRegionsDirty = true; 557 } 558 } 559 560 /* 561 * Perform our own transaction if needed 562 */ 563 564 if (transactionFlags & eTransactionNeeded) { 565 if (mCurrentState.orientation != mDrawingState.orientation) { 566 // the orientation has changed, recompute all visible regions 567 // and invalidate everything. 568 569 const int dpy = 0; 570 const int orientation = mCurrentState.orientation; 571 // Currently unused: const uint32_t flags = mCurrentState.orientationFlags; 572 GraphicPlane& plane(graphicPlane(dpy)); 573 plane.setOrientation(orientation); 574 575 // update the shared control block 576 const DisplayHardware& hw(plane.displayHardware()); 577 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 578 dcblk->orientation = orientation; 579 dcblk->w = plane.getWidth(); 580 dcblk->h = plane.getHeight(); 581 582 mVisibleRegionsDirty = true; 583 mDirtyRegion.set(hw.bounds()); 584 } 585 586 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 587 // freezing or unfreezing the display -> trigger animation if needed 588 mFreezeDisplay = mCurrentState.freezeDisplay; 589 if (mFreezeDisplay) 590 mFreezeDisplayTime = 0; 591 } 592 593 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 594 // layers have been added 595 mVisibleRegionsDirty = true; 596 } 597 598 // some layers might have been removed, so 599 // we need to update the regions they're exposing. 600 if (mLayersRemoved) { 601 mLayersRemoved = false; 602 mVisibleRegionsDirty = true; 603 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 604 const size_t count = previousLayers.size(); 605 for (size_t i=0 ; i<count ; i++) { 606 const sp<LayerBase>& layer(previousLayers[i]); 607 if (currentLayers.indexOf( layer ) < 0) { 608 // this layer is not visible anymore 609 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 610 } 611 } 612 } 613 } 614 615 commitTransaction(); 616} 617 618sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 619{ 620 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 621} 622 623void SurfaceFlinger::computeVisibleRegions( 624 const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 625{ 626 const GraphicPlane& plane(graphicPlane(0)); 627 const Transform& planeTransform(plane.transform()); 628 const DisplayHardware& hw(plane.displayHardware()); 629 const Region screenRegion(hw.bounds()); 630 631 Region aboveOpaqueLayers; 632 Region aboveCoveredLayers; 633 Region dirty; 634 635 bool secureFrameBuffer = false; 636 637 size_t i = currentLayers.size(); 638 while (i--) { 639 const sp<LayerBase>& layer = currentLayers[i]; 640 layer->validateVisibility(planeTransform); 641 642 // start with the whole surface at its current location 643 const Layer::State& s(layer->drawingState()); 644 645 /* 646 * opaqueRegion: area of a surface that is fully opaque. 647 */ 648 Region opaqueRegion; 649 650 /* 651 * visibleRegion: area of a surface that is visible on screen 652 * and not fully transparent. This is essentially the layer's 653 * footprint minus the opaque regions above it. 654 * Areas covered by a translucent surface are considered visible. 655 */ 656 Region visibleRegion; 657 658 /* 659 * coveredRegion: area of a surface that is covered by all 660 * visible regions above it (which includes the translucent areas). 661 */ 662 Region coveredRegion; 663 664 665 // handle hidden surfaces by setting the visible region to empty 666 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 667 const bool translucent = !layer->isOpaque(); 668 const Rect bounds(layer->visibleBounds()); 669 visibleRegion.set(bounds); 670 visibleRegion.andSelf(screenRegion); 671 if (!visibleRegion.isEmpty()) { 672 // Remove the transparent area from the visible region 673 if (translucent) { 674 visibleRegion.subtractSelf(layer->transparentRegionScreen); 675 } 676 677 // compute the opaque region 678 const int32_t layerOrientation = layer->getOrientation(); 679 if (s.alpha==255 && !translucent && 680 ((layerOrientation & Transform::ROT_INVALID) == false)) { 681 // the opaque region is the layer's footprint 682 opaqueRegion = visibleRegion; 683 } 684 } 685 } 686 687 // Clip the covered region to the visible region 688 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 689 690 // Update aboveCoveredLayers for next (lower) layer 691 aboveCoveredLayers.orSelf(visibleRegion); 692 693 // subtract the opaque region covered by the layers above us 694 visibleRegion.subtractSelf(aboveOpaqueLayers); 695 696 // compute this layer's dirty region 697 if (layer->contentDirty) { 698 // we need to invalidate the whole region 699 dirty = visibleRegion; 700 // as well, as the old visible region 701 dirty.orSelf(layer->visibleRegionScreen); 702 layer->contentDirty = false; 703 } else { 704 /* compute the exposed region: 705 * the exposed region consists of two components: 706 * 1) what's VISIBLE now and was COVERED before 707 * 2) what's EXPOSED now less what was EXPOSED before 708 * 709 * note that (1) is conservative, we start with the whole 710 * visible region but only keep what used to be covered by 711 * something -- which mean it may have been exposed. 712 * 713 * (2) handles areas that were not covered by anything but got 714 * exposed because of a resize. 715 */ 716 const Region newExposed = visibleRegion - coveredRegion; 717 const Region oldVisibleRegion = layer->visibleRegionScreen; 718 const Region oldCoveredRegion = layer->coveredRegionScreen; 719 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 720 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 721 } 722 dirty.subtractSelf(aboveOpaqueLayers); 723 724 // accumulate to the screen dirty region 725 dirtyRegion.orSelf(dirty); 726 727 // Update aboveOpaqueLayers for next (lower) layer 728 aboveOpaqueLayers.orSelf(opaqueRegion); 729 730 // Store the visible region is screen space 731 layer->setVisibleRegion(visibleRegion); 732 layer->setCoveredRegion(coveredRegion); 733 734 // If a secure layer is partially visible, lock-down the screen! 735 if (layer->isSecure() && !visibleRegion.isEmpty()) { 736 secureFrameBuffer = true; 737 } 738 } 739 740 // invalidate the areas where a layer was removed 741 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 742 mDirtyRegionRemovedLayer.clear(); 743 744 mSecureFrameBuffer = secureFrameBuffer; 745 opaqueRegion = aboveOpaqueLayers; 746} 747 748 749void SurfaceFlinger::commitTransaction() 750{ 751 mDrawingState = mCurrentState; 752 mResizeTransationPending = false; 753 mTransactionCV.broadcast(); 754} 755 756void SurfaceFlinger::handlePageFlip() 757{ 758 bool visibleRegions = mVisibleRegionsDirty; 759 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 760 visibleRegions |= lockPageFlip(currentLayers); 761 762 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 763 const Region screenRegion(hw.bounds()); 764 if (visibleRegions) { 765 Region opaqueRegion; 766 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 767 768 /* 769 * rebuild the visible layer list 770 */ 771 const size_t count = currentLayers.size(); 772 mVisibleLayersSortedByZ.clear(); 773 mVisibleLayersSortedByZ.setCapacity(count); 774 for (size_t i=0 ; i<count ; i++) { 775 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 776 mVisibleLayersSortedByZ.add(currentLayers[i]); 777 } 778 779 mWormholeRegion = screenRegion.subtract(opaqueRegion); 780 mVisibleRegionsDirty = false; 781 invalidateHwcGeometry(); 782 } 783 784 unlockPageFlip(currentLayers); 785 mDirtyRegion.andSelf(screenRegion); 786} 787 788void SurfaceFlinger::invalidateHwcGeometry() 789{ 790 mHwWorkListDirty = true; 791} 792 793bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 794{ 795 bool recomputeVisibleRegions = false; 796 size_t count = currentLayers.size(); 797 sp<LayerBase> const* layers = currentLayers.array(); 798 for (size_t i=0 ; i<count ; i++) { 799 const sp<LayerBase>& layer(layers[i]); 800 layer->lockPageFlip(recomputeVisibleRegions); 801 } 802 return recomputeVisibleRegions; 803} 804 805void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 806{ 807 const GraphicPlane& plane(graphicPlane(0)); 808 const Transform& planeTransform(plane.transform()); 809 size_t count = currentLayers.size(); 810 sp<LayerBase> const* layers = currentLayers.array(); 811 for (size_t i=0 ; i<count ; i++) { 812 const sp<LayerBase>& layer(layers[i]); 813 layer->unlockPageFlip(planeTransform, mDirtyRegion); 814 } 815} 816 817void SurfaceFlinger::handleWorkList() 818{ 819 mHwWorkListDirty = false; 820 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 821 if (hwc.initCheck() == NO_ERROR) { 822 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 823 const size_t count = currentLayers.size(); 824 hwc.createWorkList(count); 825 hwc_layer_t* const cur(hwc.getLayers()); 826 for (size_t i=0 ; cur && i<count ; i++) { 827 currentLayers[i]->setGeometry(&cur[i]); 828 if (mDebugDisableHWC || mDebugRegion) { 829 cur[i].compositionType = HWC_FRAMEBUFFER; 830 cur[i].flags |= HWC_SKIP_LAYER; 831 } 832 } 833 } 834} 835 836void SurfaceFlinger::handleRepaint() 837{ 838 // compute the invalid region 839 mSwapRegion.orSelf(mDirtyRegion); 840 841 if (UNLIKELY(mDebugRegion)) { 842 debugFlashRegions(); 843 } 844 845 // set the frame buffer 846 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 847 glMatrixMode(GL_MODELVIEW); 848 glLoadIdentity(); 849 850 uint32_t flags = hw.getFlags(); 851 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 852 (flags & DisplayHardware::BUFFER_PRESERVED)) 853 { 854 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 855 // takes a rectangle, we must make sure to update that whole 856 // rectangle in that case 857 if (flags & DisplayHardware::SWAP_RECTANGLE) { 858 // TODO: we really should be able to pass a region to 859 // SWAP_RECTANGLE so that we don't have to redraw all this. 860 mDirtyRegion.set(mSwapRegion.bounds()); 861 } else { 862 // in the BUFFER_PRESERVED case, obviously, we can update only 863 // what's needed and nothing more. 864 // NOTE: this is NOT a common case, as preserving the backbuffer 865 // is costly and usually involves copying the whole update back. 866 } 867 } else { 868 if (flags & DisplayHardware::PARTIAL_UPDATES) { 869 // We need to redraw the rectangle that will be updated 870 // (pushed to the framebuffer). 871 // This is needed because PARTIAL_UPDATES only takes one 872 // rectangle instead of a region (see DisplayHardware::flip()) 873 mDirtyRegion.set(mSwapRegion.bounds()); 874 } else { 875 // we need to redraw everything (the whole screen) 876 mDirtyRegion.set(hw.bounds()); 877 mSwapRegion = mDirtyRegion; 878 } 879 } 880 881 setupHardwareComposer(mDirtyRegion); 882 composeSurfaces(mDirtyRegion); 883 884 // update the swap region and clear the dirty region 885 mSwapRegion.orSelf(mDirtyRegion); 886 mDirtyRegion.clear(); 887} 888 889void SurfaceFlinger::setupHardwareComposer(Region& dirtyInOut) 890{ 891 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 892 HWComposer& hwc(hw.getHwComposer()); 893 hwc_layer_t* const cur(hwc.getLayers()); 894 if (!cur) { 895 return; 896 } 897 898 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 899 size_t count = layers.size(); 900 901 LOGE_IF(hwc.getNumLayers() != count, 902 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 903 hwc.getNumLayers(), count); 904 905 // just to be extra-safe, use the smallest count 906 if (hwc.initCheck() == NO_ERROR) { 907 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 908 } 909 910 /* 911 * update the per-frame h/w composer data for each layer 912 * and build the transparent region of the FB 913 */ 914 for (size_t i=0 ; i<count ; i++) { 915 const sp<LayerBase>& layer(layers[i]); 916 layer->setPerFrameData(&cur[i]); 917 } 918 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 919 status_t err = hwc.prepare(); 920 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 921 922 if (err == NO_ERROR) { 923 // what's happening here is tricky. 924 // we want to clear all the layers with the CLEAR_FB flags 925 // that are opaque. 926 // however, since some GPU are efficient at preserving 927 // the backbuffer, we want to take advantage of that so we do the 928 // clear only in the dirty region (other areas will be preserved 929 // on those GPUs). 930 // NOTE: on non backbuffer preserving GPU, the dirty region 931 // has already been expanded as needed, so the code is correct 932 // there too. 933 // 934 // However, the content of the framebuffer cannot be trusted when 935 // we switch to/from FB/OVERLAY, in which case we need to 936 // expand the dirty region to those areas too. 937 // 938 // Note also that there is a special case when switching from 939 // "no layers in FB" to "some layers in FB", where we need to redraw 940 // the entire FB, since some areas might contain uninitialized 941 // data. 942 // 943 // Also we want to make sure to not clear areas that belong to 944 // layers above that won't redraw (we would just erasing them), 945 // that is, we can't erase anything outside the dirty region. 946 947 Region transparent; 948 949 if (!fbLayerCount && hwc.getLayerCount(HWC_FRAMEBUFFER)) { 950 transparent.set(hw.getBounds()); 951 dirtyInOut = transparent; 952 } else { 953 for (size_t i=0 ; i<count ; i++) { 954 const sp<LayerBase>& layer(layers[i]); 955 if ((cur[i].hints & HWC_HINT_CLEAR_FB) && layer->isOpaque()) { 956 transparent.orSelf(layer->visibleRegionScreen); 957 } 958 bool isOverlay = (cur[i].compositionType != HWC_FRAMEBUFFER); 959 if (isOverlay != layer->isOverlay()) { 960 // we transitioned to/from overlay, so add this layer 961 // to the dirty region so the framebuffer can be either 962 // cleared or redrawn. 963 dirtyInOut.orSelf(layer->visibleRegionScreen); 964 } 965 layer->setOverlay(isOverlay); 966 } 967 // don't erase stuff outside the dirty region 968 transparent.andSelf(dirtyInOut); 969 } 970 971 /* 972 * clear the area of the FB that need to be transparent 973 */ 974 if (!transparent.isEmpty()) { 975 glClearColor(0,0,0,0); 976 Region::const_iterator it = transparent.begin(); 977 Region::const_iterator const end = transparent.end(); 978 const int32_t height = hw.getHeight(); 979 while (it != end) { 980 const Rect& r(*it++); 981 const GLint sy = height - (r.top + r.height()); 982 glScissor(r.left, sy, r.width(), r.height()); 983 glClear(GL_COLOR_BUFFER_BIT); 984 } 985 } 986 } 987} 988 989void SurfaceFlinger::composeSurfaces(const Region& dirty) 990{ 991 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 992 HWComposer& hwc(hw.getHwComposer()); 993 994 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 995 if (UNLIKELY(fbLayerCount && !mWormholeRegion.isEmpty())) { 996 // should never happen unless the window manager has a bug 997 // draw something... 998 drawWormhole(); 999 } 1000 1001 /* 1002 * and then, render the layers targeted at the framebuffer 1003 */ 1004 hwc_layer_t* const cur(hwc.getLayers()); 1005 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1006 size_t count = layers.size(); 1007 for (size_t i=0 ; i<count ; i++) { 1008 if (cur && (cur[i].compositionType != HWC_FRAMEBUFFER)) { 1009 continue; 1010 } 1011 const sp<LayerBase>& layer(layers[i]); 1012 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 1013 if (!clip.isEmpty()) { 1014 layer->draw(clip); 1015 } 1016 } 1017} 1018 1019void SurfaceFlinger::debugFlashRegions() 1020{ 1021 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1022 const uint32_t flags = hw.getFlags(); 1023 const int32_t height = hw.getHeight(); 1024 if (mSwapRegion.isEmpty()) { 1025 return; 1026 } 1027 1028 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 1029 (flags & DisplayHardware::BUFFER_PRESERVED))) { 1030 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 1031 mDirtyRegion.bounds() : hw.bounds()); 1032 composeSurfaces(repaint); 1033 } 1034 1035 glDisable(GL_BLEND); 1036 glDisable(GL_DITHER); 1037 glDisable(GL_SCISSOR_TEST); 1038 1039 static int toggle = 0; 1040 toggle = 1 - toggle; 1041 if (toggle) { 1042 glColor4f(1, 0, 1, 1); 1043 } else { 1044 glColor4f(1, 1, 0, 1); 1045 } 1046 1047 Region::const_iterator it = mDirtyRegion.begin(); 1048 Region::const_iterator const end = mDirtyRegion.end(); 1049 while (it != end) { 1050 const Rect& r = *it++; 1051 GLfloat vertices[][2] = { 1052 { r.left, height - r.top }, 1053 { r.left, height - r.bottom }, 1054 { r.right, height - r.bottom }, 1055 { r.right, height - r.top } 1056 }; 1057 glVertexPointer(2, GL_FLOAT, 0, vertices); 1058 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1059 } 1060 1061 hw.flip(mSwapRegion); 1062 1063 if (mDebugRegion > 1) 1064 usleep(mDebugRegion * 1000); 1065 1066 glEnable(GL_SCISSOR_TEST); 1067} 1068 1069void SurfaceFlinger::drawWormhole() const 1070{ 1071 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1072 if (region.isEmpty()) 1073 return; 1074 1075 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1076 const int32_t width = hw.getWidth(); 1077 const int32_t height = hw.getHeight(); 1078 1079 glDisable(GL_BLEND); 1080 glDisable(GL_DITHER); 1081 1082 if (LIKELY(!mDebugBackground)) { 1083 glClearColor(0,0,0,0); 1084 Region::const_iterator it = region.begin(); 1085 Region::const_iterator const end = region.end(); 1086 while (it != end) { 1087 const Rect& r = *it++; 1088 const GLint sy = height - (r.top + r.height()); 1089 glScissor(r.left, sy, r.width(), r.height()); 1090 glClear(GL_COLOR_BUFFER_BIT); 1091 } 1092 } else { 1093 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1094 { width, height }, { 0, height } }; 1095 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1096 glVertexPointer(2, GL_SHORT, 0, vertices); 1097 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1098 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1099#if defined(GL_OES_EGL_image_external) 1100 if (GLExtensions::getInstance().haveTextureExternal()) { 1101 glDisable(GL_TEXTURE_EXTERNAL_OES); 1102 } 1103#endif 1104 glEnable(GL_TEXTURE_2D); 1105 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1106 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1107 glMatrixMode(GL_TEXTURE); 1108 glLoadIdentity(); 1109 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1110 Region::const_iterator it = region.begin(); 1111 Region::const_iterator const end = region.end(); 1112 while (it != end) { 1113 const Rect& r = *it++; 1114 const GLint sy = height - (r.top + r.height()); 1115 glScissor(r.left, sy, r.width(), r.height()); 1116 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1117 } 1118 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1119 glDisable(GL_TEXTURE_2D); 1120 glLoadIdentity(); 1121 glMatrixMode(GL_MODELVIEW); 1122 } 1123} 1124 1125void SurfaceFlinger::debugShowFPS() const 1126{ 1127 static int mFrameCount; 1128 static int mLastFrameCount = 0; 1129 static nsecs_t mLastFpsTime = 0; 1130 static float mFps = 0; 1131 mFrameCount++; 1132 nsecs_t now = systemTime(); 1133 nsecs_t diff = now - mLastFpsTime; 1134 if (diff > ms2ns(250)) { 1135 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1136 mLastFpsTime = now; 1137 mLastFrameCount = mFrameCount; 1138 } 1139 // XXX: mFPS has the value we want 1140 } 1141 1142status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1143{ 1144 Mutex::Autolock _l(mStateLock); 1145 addLayer_l(layer); 1146 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1147 return NO_ERROR; 1148} 1149 1150status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1151{ 1152 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1153 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1154} 1155 1156ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1157 const sp<LayerBaseClient>& lbc) 1158{ 1159 // attach this layer to the client 1160 size_t name = client->attachLayer(lbc); 1161 1162 Mutex::Autolock _l(mStateLock); 1163 1164 // add this layer to the current state list 1165 addLayer_l(lbc); 1166 1167 return ssize_t(name); 1168} 1169 1170status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1171{ 1172 Mutex::Autolock _l(mStateLock); 1173 status_t err = purgatorizeLayer_l(layer); 1174 if (err == NO_ERROR) 1175 setTransactionFlags(eTransactionNeeded); 1176 return err; 1177} 1178 1179status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1180{ 1181 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1182 if (lbc != 0) { 1183 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1184 } 1185 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1186 if (index >= 0) { 1187 mLayersRemoved = true; 1188 return NO_ERROR; 1189 } 1190 return status_t(index); 1191} 1192 1193status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1194{ 1195 // First add the layer to the purgatory list, which makes sure it won't 1196 // go away, then remove it from the main list (through a transaction). 1197 ssize_t err = removeLayer_l(layerBase); 1198 if (err >= 0) { 1199 mLayerPurgatory.add(layerBase); 1200 } 1201 1202 layerBase->onRemoved(); 1203 1204 // it's possible that we don't find a layer, because it might 1205 // have been destroyed already -- this is not technically an error 1206 // from the user because there is a race between Client::destroySurface(), 1207 // ~Client() and ~ISurface(). 1208 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1209} 1210 1211status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1212{ 1213 layer->forceVisibilityTransaction(); 1214 setTransactionFlags(eTraversalNeeded); 1215 return NO_ERROR; 1216} 1217 1218uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1219{ 1220 return android_atomic_release_load(&mTransactionFlags); 1221} 1222 1223uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1224{ 1225 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1226} 1227 1228uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1229{ 1230 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1231 if ((old & flags)==0) { // wake the server up 1232 signalEvent(); 1233 } 1234 return old; 1235} 1236 1237 1238void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state, 1239 int orientation) { 1240 Mutex::Autolock _l(mStateLock); 1241 1242 uint32_t flags = 0; 1243 if (mCurrentState.orientation != orientation) { 1244 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1245 mCurrentState.orientation = orientation; 1246 flags |= eTransactionNeeded; 1247 mResizeTransationPending = true; 1248 } else if (orientation != eOrientationUnchanged) { 1249 LOGW("setTransactionState: ignoring unrecognized orientation: %d", 1250 orientation); 1251 } 1252 } 1253 1254 const size_t count = state.size(); 1255 for (size_t i=0 ; i<count ; i++) { 1256 const ComposerState& s(state[i]); 1257 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1258 flags |= setClientStateLocked(client, s.state); 1259 } 1260 if (flags) { 1261 setTransactionFlags(flags); 1262 } 1263 1264 signalEvent(); 1265 1266 // if there is a transaction with a resize, wait for it to 1267 // take effect before returning. 1268 while (mResizeTransationPending) { 1269 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1270 if (CC_UNLIKELY(err != NO_ERROR)) { 1271 // just in case something goes wrong in SF, return to the 1272 // called after a few seconds. 1273 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1274 mResizeTransationPending = false; 1275 break; 1276 } 1277 } 1278} 1279 1280status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1281{ 1282 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1283 return BAD_VALUE; 1284 1285 Mutex::Autolock _l(mStateLock); 1286 mCurrentState.freezeDisplay = 1; 1287 setTransactionFlags(eTransactionNeeded); 1288 1289 // flags is intended to communicate some sort of animation behavior 1290 // (for instance fading) 1291 return NO_ERROR; 1292} 1293 1294status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1295{ 1296 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1297 return BAD_VALUE; 1298 1299 Mutex::Autolock _l(mStateLock); 1300 mCurrentState.freezeDisplay = 0; 1301 setTransactionFlags(eTransactionNeeded); 1302 1303 // flags is intended to communicate some sort of animation behavior 1304 // (for instance fading) 1305 return NO_ERROR; 1306} 1307 1308int SurfaceFlinger::setOrientation(DisplayID dpy, 1309 int orientation, uint32_t flags) 1310{ 1311 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1312 return BAD_VALUE; 1313 1314 Mutex::Autolock _l(mStateLock); 1315 if (mCurrentState.orientation != orientation) { 1316 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1317 mCurrentState.orientationFlags = flags; 1318 mCurrentState.orientation = orientation; 1319 setTransactionFlags(eTransactionNeeded); 1320 mTransactionCV.wait(mStateLock); 1321 } else { 1322 orientation = BAD_VALUE; 1323 } 1324 } 1325 return orientation; 1326} 1327 1328sp<ISurface> SurfaceFlinger::createSurface( 1329 ISurfaceComposerClient::surface_data_t* params, 1330 const String8& name, 1331 const sp<Client>& client, 1332 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1333 uint32_t flags) 1334{ 1335 sp<LayerBaseClient> layer; 1336 sp<ISurface> surfaceHandle; 1337 1338 if (int32_t(w|h) < 0) { 1339 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1340 int(w), int(h)); 1341 return surfaceHandle; 1342 } 1343 1344 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1345 sp<Layer> normalLayer; 1346 switch (flags & eFXSurfaceMask) { 1347 case eFXSurfaceNormal: 1348 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1349 layer = normalLayer; 1350 break; 1351 case eFXSurfaceBlur: 1352 // for now we treat Blur as Dim, until we can implement it 1353 // efficiently. 1354 case eFXSurfaceDim: 1355 layer = createDimSurface(client, d, w, h, flags); 1356 break; 1357 case eFXSurfaceScreenshot: 1358 layer = createScreenshotSurface(client, d, w, h, flags); 1359 break; 1360 } 1361 1362 if (layer != 0) { 1363 layer->initStates(w, h, flags); 1364 layer->setName(name); 1365 ssize_t token = addClientLayer(client, layer); 1366 1367 surfaceHandle = layer->getSurface(); 1368 if (surfaceHandle != 0) { 1369 params->token = token; 1370 params->identity = layer->getIdentity(); 1371 if (normalLayer != 0) { 1372 Mutex::Autolock _l(mStateLock); 1373 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1374 } 1375 } 1376 1377 setTransactionFlags(eTransactionNeeded); 1378 } 1379 1380 return surfaceHandle; 1381} 1382 1383sp<Layer> SurfaceFlinger::createNormalSurface( 1384 const sp<Client>& client, DisplayID display, 1385 uint32_t w, uint32_t h, uint32_t flags, 1386 PixelFormat& format) 1387{ 1388 // initialize the surfaces 1389 switch (format) { // TODO: take h/w into account 1390 case PIXEL_FORMAT_TRANSPARENT: 1391 case PIXEL_FORMAT_TRANSLUCENT: 1392 format = PIXEL_FORMAT_RGBA_8888; 1393 break; 1394 case PIXEL_FORMAT_OPAQUE: 1395#ifdef NO_RGBX_8888 1396 format = PIXEL_FORMAT_RGB_565; 1397#else 1398 format = PIXEL_FORMAT_RGBX_8888; 1399#endif 1400 break; 1401 } 1402 1403#ifdef NO_RGBX_8888 1404 if (format == PIXEL_FORMAT_RGBX_8888) 1405 format = PIXEL_FORMAT_RGBA_8888; 1406#endif 1407 1408 sp<Layer> layer = new Layer(this, display, client); 1409 status_t err = layer->setBuffers(w, h, format, flags); 1410 if (LIKELY(err != NO_ERROR)) { 1411 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1412 layer.clear(); 1413 } 1414 return layer; 1415} 1416 1417sp<LayerDim> SurfaceFlinger::createDimSurface( 1418 const sp<Client>& client, DisplayID display, 1419 uint32_t w, uint32_t h, uint32_t flags) 1420{ 1421 sp<LayerDim> layer = new LayerDim(this, display, client); 1422 return layer; 1423} 1424 1425sp<LayerScreenshot> SurfaceFlinger::createScreenshotSurface( 1426 const sp<Client>& client, DisplayID display, 1427 uint32_t w, uint32_t h, uint32_t flags) 1428{ 1429 sp<LayerScreenshot> layer = new LayerScreenshot(this, display, client); 1430 status_t err = layer->capture(); 1431 if (err != NO_ERROR) { 1432 layer.clear(); 1433 LOGW("createScreenshotSurface failed (%s)", strerror(-err)); 1434 } 1435 return layer; 1436} 1437 1438status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1439{ 1440 /* 1441 * called by the window manager, when a surface should be marked for 1442 * destruction. 1443 * 1444 * The surface is removed from the current and drawing lists, but placed 1445 * in the purgatory queue, so it's not destroyed right-away (we need 1446 * to wait for all client's references to go away first). 1447 */ 1448 1449 status_t err = NAME_NOT_FOUND; 1450 Mutex::Autolock _l(mStateLock); 1451 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1452 if (layer != 0) { 1453 err = purgatorizeLayer_l(layer); 1454 if (err == NO_ERROR) { 1455 setTransactionFlags(eTransactionNeeded); 1456 } 1457 } 1458 return err; 1459} 1460 1461status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1462{ 1463 // called by ~ISurface() when all references are gone 1464 status_t err = NO_ERROR; 1465 sp<LayerBaseClient> l(layer.promote()); 1466 if (l != NULL) { 1467 Mutex::Autolock _l(mStateLock); 1468 err = removeLayer_l(l); 1469 if (err == NAME_NOT_FOUND) { 1470 // The surface wasn't in the current list, which means it was 1471 // removed already, which means it is in the purgatory, 1472 // and need to be removed from there. 1473 ssize_t idx = mLayerPurgatory.remove(l); 1474 LOGE_IF(idx < 0, 1475 "layer=%p is not in the purgatory list", l.get()); 1476 } 1477 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1478 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1479 } 1480 return err; 1481} 1482 1483uint32_t SurfaceFlinger::setClientStateLocked( 1484 const sp<Client>& client, 1485 const layer_state_t& s) 1486{ 1487 uint32_t flags = 0; 1488 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1489 if (layer != 0) { 1490 const uint32_t what = s.what; 1491 if (what & ePositionChanged) { 1492 if (layer->setPosition(s.x, s.y)) 1493 flags |= eTraversalNeeded; 1494 } 1495 if (what & eLayerChanged) { 1496 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1497 if (layer->setLayer(s.z)) { 1498 mCurrentState.layersSortedByZ.removeAt(idx); 1499 mCurrentState.layersSortedByZ.add(layer); 1500 // we need traversal (state changed) 1501 // AND transaction (list changed) 1502 flags |= eTransactionNeeded|eTraversalNeeded; 1503 } 1504 } 1505 if (what & eSizeChanged) { 1506 if (layer->setSize(s.w, s.h)) { 1507 flags |= eTraversalNeeded; 1508 mResizeTransationPending = true; 1509 } 1510 } 1511 if (what & eAlphaChanged) { 1512 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1513 flags |= eTraversalNeeded; 1514 } 1515 if (what & eMatrixChanged) { 1516 if (layer->setMatrix(s.matrix)) 1517 flags |= eTraversalNeeded; 1518 } 1519 if (what & eTransparentRegionChanged) { 1520 if (layer->setTransparentRegionHint(s.transparentRegion)) 1521 flags |= eTraversalNeeded; 1522 } 1523 if (what & eVisibilityChanged) { 1524 if (layer->setFlags(s.flags, s.mask)) 1525 flags |= eTraversalNeeded; 1526 } 1527 } 1528 return flags; 1529} 1530 1531void SurfaceFlinger::screenReleased(int dpy) 1532{ 1533 // this may be called by a signal handler, we can't do too much in here 1534 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1535 signalEvent(); 1536} 1537 1538void SurfaceFlinger::screenAcquired(int dpy) 1539{ 1540 // this may be called by a signal handler, we can't do too much in here 1541 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1542 signalEvent(); 1543} 1544 1545status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1546{ 1547 const size_t SIZE = 4096; 1548 char buffer[SIZE]; 1549 String8 result; 1550 1551 if (!PermissionCache::checkCallingPermission(sDump)) { 1552 snprintf(buffer, SIZE, "Permission Denial: " 1553 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1554 IPCThreadState::self()->getCallingPid(), 1555 IPCThreadState::self()->getCallingUid()); 1556 result.append(buffer); 1557 } else { 1558 1559 // figure out if we're stuck somewhere 1560 const nsecs_t now = systemTime(); 1561 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1562 const nsecs_t inTransaction(mDebugInTransaction); 1563 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1564 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1565 1566 // Try to get the main lock, but don't insist if we can't 1567 // (this would indicate SF is stuck, but we want to be able to 1568 // print something in dumpsys). 1569 int retry = 3; 1570 while (mStateLock.tryLock()<0 && --retry>=0) { 1571 usleep(1000000); 1572 } 1573 const bool locked(retry >= 0); 1574 if (!locked) { 1575 snprintf(buffer, SIZE, 1576 "SurfaceFlinger appears to be unresponsive, " 1577 "dumping anyways (no locks held)\n"); 1578 result.append(buffer); 1579 } 1580 1581 /* 1582 * Dump the visible layer list 1583 */ 1584 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1585 const size_t count = currentLayers.size(); 1586 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1587 result.append(buffer); 1588 for (size_t i=0 ; i<count ; i++) { 1589 const sp<LayerBase>& layer(currentLayers[i]); 1590 layer->dump(result, buffer, SIZE); 1591 const Layer::State& s(layer->drawingState()); 1592 s.transparentRegion.dump(result, "transparentRegion"); 1593 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1594 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1595 } 1596 1597 /* 1598 * Dump the layers in the purgatory 1599 */ 1600 1601 const size_t purgatorySize = mLayerPurgatory.size(); 1602 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1603 result.append(buffer); 1604 for (size_t i=0 ; i<purgatorySize ; i++) { 1605 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1606 layer->shortDump(result, buffer, SIZE); 1607 } 1608 1609 /* 1610 * Dump SurfaceFlinger global state 1611 */ 1612 1613 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1614 result.append(buffer); 1615 1616 const GLExtensions& extensions(GLExtensions::getInstance()); 1617 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1618 extensions.getVendor(), 1619 extensions.getRenderer(), 1620 extensions.getVersion()); 1621 result.append(buffer); 1622 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1623 result.append(buffer); 1624 1625 mWormholeRegion.dump(result, "WormholeRegion"); 1626 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1627 snprintf(buffer, SIZE, 1628 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1629 mFreezeDisplay?"yes":"no", mFreezeCount, 1630 mCurrentState.orientation, hw.canDraw()); 1631 result.append(buffer); 1632 snprintf(buffer, SIZE, 1633 " last eglSwapBuffers() time: %f us\n" 1634 " last transaction time : %f us\n", 1635 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1636 result.append(buffer); 1637 1638 if (inSwapBuffersDuration || !locked) { 1639 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1640 inSwapBuffersDuration/1000.0); 1641 result.append(buffer); 1642 } 1643 1644 if (inTransactionDuration || !locked) { 1645 snprintf(buffer, SIZE, " transaction time: %f us\n", 1646 inTransactionDuration/1000.0); 1647 result.append(buffer); 1648 } 1649 1650 /* 1651 * Dump HWComposer state 1652 */ 1653 HWComposer& hwc(hw.getHwComposer()); 1654 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1655 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1656 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1657 result.append(buffer); 1658 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1659 1660 /* 1661 * Dump gralloc state 1662 */ 1663 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1664 alloc.dump(result); 1665 hw.dump(result); 1666 1667 if (locked) { 1668 mStateLock.unlock(); 1669 } 1670 } 1671 write(fd, result.string(), result.size()); 1672 return NO_ERROR; 1673} 1674 1675status_t SurfaceFlinger::onTransact( 1676 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1677{ 1678 switch (code) { 1679 case CREATE_CONNECTION: 1680 case SET_TRANSACTION_STATE: 1681 case SET_ORIENTATION: 1682 case FREEZE_DISPLAY: 1683 case UNFREEZE_DISPLAY: 1684 case BOOT_FINISHED: 1685 case TURN_ELECTRON_BEAM_OFF: 1686 case TURN_ELECTRON_BEAM_ON: 1687 { 1688 // codes that require permission check 1689 IPCThreadState* ipc = IPCThreadState::self(); 1690 const int pid = ipc->getCallingPid(); 1691 const int uid = ipc->getCallingUid(); 1692 if ((uid != AID_GRAPHICS) && 1693 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1694 LOGE("Permission Denial: " 1695 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1696 return PERMISSION_DENIED; 1697 } 1698 break; 1699 } 1700 case CAPTURE_SCREEN: 1701 { 1702 // codes that require permission check 1703 IPCThreadState* ipc = IPCThreadState::self(); 1704 const int pid = ipc->getCallingPid(); 1705 const int uid = ipc->getCallingUid(); 1706 if ((uid != AID_GRAPHICS) && 1707 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1708 LOGE("Permission Denial: " 1709 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1710 return PERMISSION_DENIED; 1711 } 1712 break; 1713 } 1714 } 1715 1716 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1717 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1718 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1719 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1720 IPCThreadState* ipc = IPCThreadState::self(); 1721 const int pid = ipc->getCallingPid(); 1722 const int uid = ipc->getCallingUid(); 1723 LOGE("Permission Denial: " 1724 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1725 return PERMISSION_DENIED; 1726 } 1727 int n; 1728 switch (code) { 1729 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1730 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1731 return NO_ERROR; 1732 case 1002: // SHOW_UPDATES 1733 n = data.readInt32(); 1734 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1735 invalidateHwcGeometry(); 1736 repaintEverything(); 1737 return NO_ERROR; 1738 case 1003: // SHOW_BACKGROUND 1739 n = data.readInt32(); 1740 mDebugBackground = n ? 1 : 0; 1741 return NO_ERROR; 1742 case 1004:{ // repaint everything 1743 repaintEverything(); 1744 return NO_ERROR; 1745 } 1746 case 1005:{ // force transaction 1747 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1748 return NO_ERROR; 1749 } 1750 case 1006:{ // enable/disable GraphicLog 1751 int enabled = data.readInt32(); 1752 GraphicLog::getInstance().setEnabled(enabled); 1753 return NO_ERROR; 1754 } 1755 case 1007: // set mFreezeCount 1756 mFreezeCount = data.readInt32(); 1757 mFreezeDisplayTime = 0; 1758 return NO_ERROR; 1759 case 1008: // toggle use of hw composer 1760 n = data.readInt32(); 1761 mDebugDisableHWC = n ? 1 : 0; 1762 invalidateHwcGeometry(); 1763 repaintEverything(); 1764 return NO_ERROR; 1765 case 1009: // toggle use of transform hint 1766 n = data.readInt32(); 1767 mDebugDisableTransformHint = n ? 1 : 0; 1768 invalidateHwcGeometry(); 1769 repaintEverything(); 1770 return NO_ERROR; 1771 case 1010: // interrogate. 1772 reply->writeInt32(0); 1773 reply->writeInt32(0); 1774 reply->writeInt32(mDebugRegion); 1775 reply->writeInt32(mDebugBackground); 1776 return NO_ERROR; 1777 case 1013: { 1778 Mutex::Autolock _l(mStateLock); 1779 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1780 reply->writeInt32(hw.getPageFlipCount()); 1781 } 1782 return NO_ERROR; 1783 } 1784 } 1785 return err; 1786} 1787 1788void SurfaceFlinger::repaintEverything() { 1789 Mutex::Autolock _l(mStateLock); 1790 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1791 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1792 signalEvent(); 1793} 1794 1795// --------------------------------------------------------------------------- 1796 1797status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy, 1798 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1799{ 1800 Mutex::Autolock _l(mStateLock); 1801 return renderScreenToTextureLocked(dpy, textureName, uOut, vOut); 1802} 1803 1804status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1805 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1806{ 1807 if (!GLExtensions::getInstance().haveFramebufferObject()) 1808 return INVALID_OPERATION; 1809 1810 // get screen geometry 1811 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1812 const uint32_t hw_w = hw.getWidth(); 1813 const uint32_t hw_h = hw.getHeight(); 1814 GLfloat u = 1; 1815 GLfloat v = 1; 1816 1817 // make sure to clear all GL error flags 1818 while ( glGetError() != GL_NO_ERROR ) ; 1819 1820 // create a FBO 1821 GLuint name, tname; 1822 glGenTextures(1, &tname); 1823 glBindTexture(GL_TEXTURE_2D, tname); 1824 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1825 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1826 if (glGetError() != GL_NO_ERROR) { 1827 while ( glGetError() != GL_NO_ERROR ) ; 1828 GLint tw = (2 << (31 - clz(hw_w))); 1829 GLint th = (2 << (31 - clz(hw_h))); 1830 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1831 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1832 u = GLfloat(hw_w) / tw; 1833 v = GLfloat(hw_h) / th; 1834 } 1835 glGenFramebuffersOES(1, &name); 1836 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1837 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1838 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1839 1840 // redraw the screen entirely... 1841 glClearColor(0,0,0,1); 1842 glClear(GL_COLOR_BUFFER_BIT); 1843 glMatrixMode(GL_MODELVIEW); 1844 glLoadIdentity(); 1845 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1846 const size_t count = layers.size(); 1847 for (size_t i=0 ; i<count ; ++i) { 1848 const sp<LayerBase>& layer(layers[i]); 1849 layer->drawForSreenShot(); 1850 } 1851 1852 // back to main framebuffer 1853 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1854 glDisable(GL_SCISSOR_TEST); 1855 glDeleteFramebuffersOES(1, &name); 1856 1857 *textureName = tname; 1858 *uOut = u; 1859 *vOut = v; 1860 return NO_ERROR; 1861} 1862 1863// --------------------------------------------------------------------------- 1864 1865status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1866{ 1867 // get screen geometry 1868 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1869 const uint32_t hw_w = hw.getWidth(); 1870 const uint32_t hw_h = hw.getHeight(); 1871 const Region screenBounds(hw.getBounds()); 1872 1873 GLfloat u, v; 1874 GLuint tname; 1875 status_t result = renderScreenToTextureLocked(0, &tname, &u, &v); 1876 if (result != NO_ERROR) { 1877 return result; 1878 } 1879 1880 GLfloat vtx[8]; 1881 const GLfloat texCoords[4][2] = { {0,0}, {0,v}, {u,v}, {u,0} }; 1882 glBindTexture(GL_TEXTURE_2D, tname); 1883 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1884 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1885 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1886 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1887 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1888 glVertexPointer(2, GL_FLOAT, 0, vtx); 1889 1890 /* 1891 * Texture coordinate mapping 1892 * 1893 * u 1894 * 1 +----------+---+ 1895 * | | | | image is inverted 1896 * | V | | w.r.t. the texture 1897 * 1-v +----------+ | coordinates 1898 * | | 1899 * | | 1900 * | | 1901 * 0 +--------------+ 1902 * 0 1 1903 * 1904 */ 1905 1906 class s_curve_interpolator { 1907 const float nbFrames, s, v; 1908 public: 1909 s_curve_interpolator(int nbFrames, float s) 1910 : nbFrames(1.0f / (nbFrames-1)), s(s), 1911 v(1.0f + expf(-s + 0.5f*s)) { 1912 } 1913 float operator()(int f) { 1914 const float x = f * nbFrames; 1915 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1916 } 1917 }; 1918 1919 class v_stretch { 1920 const GLfloat hw_w, hw_h; 1921 public: 1922 v_stretch(uint32_t hw_w, uint32_t hw_h) 1923 : hw_w(hw_w), hw_h(hw_h) { 1924 } 1925 void operator()(GLfloat* vtx, float v) { 1926 const GLfloat w = hw_w + (hw_w * v); 1927 const GLfloat h = hw_h - (hw_h * v); 1928 const GLfloat x = (hw_w - w) * 0.5f; 1929 const GLfloat y = (hw_h - h) * 0.5f; 1930 vtx[0] = x; vtx[1] = y; 1931 vtx[2] = x; vtx[3] = y + h; 1932 vtx[4] = x + w; vtx[5] = y + h; 1933 vtx[6] = x + w; vtx[7] = y; 1934 } 1935 }; 1936 1937 class h_stretch { 1938 const GLfloat hw_w, hw_h; 1939 public: 1940 h_stretch(uint32_t hw_w, uint32_t hw_h) 1941 : hw_w(hw_w), hw_h(hw_h) { 1942 } 1943 void operator()(GLfloat* vtx, float v) { 1944 const GLfloat w = hw_w - (hw_w * v); 1945 const GLfloat h = 1.0f; 1946 const GLfloat x = (hw_w - w) * 0.5f; 1947 const GLfloat y = (hw_h - h) * 0.5f; 1948 vtx[0] = x; vtx[1] = y; 1949 vtx[2] = x; vtx[3] = y + h; 1950 vtx[4] = x + w; vtx[5] = y + h; 1951 vtx[6] = x + w; vtx[7] = y; 1952 } 1953 }; 1954 1955 // the full animation is 24 frames 1956 char value[PROPERTY_VALUE_MAX]; 1957 property_get("debug.sf.electron_frames", value, "24"); 1958 int nbFrames = (atoi(value) + 1) >> 1; 1959 if (nbFrames <= 0) // just in case 1960 nbFrames = 24; 1961 1962 s_curve_interpolator itr(nbFrames, 7.5f); 1963 s_curve_interpolator itg(nbFrames, 8.0f); 1964 s_curve_interpolator itb(nbFrames, 8.5f); 1965 1966 v_stretch vverts(hw_w, hw_h); 1967 1968 glMatrixMode(GL_TEXTURE); 1969 glLoadIdentity(); 1970 glMatrixMode(GL_MODELVIEW); 1971 glLoadIdentity(); 1972 1973 glEnable(GL_BLEND); 1974 glBlendFunc(GL_ONE, GL_ONE); 1975 for (int i=0 ; i<nbFrames ; i++) { 1976 float x, y, w, h; 1977 const float vr = itr(i); 1978 const float vg = itg(i); 1979 const float vb = itb(i); 1980 1981 // clear screen 1982 glColorMask(1,1,1,1); 1983 glClear(GL_COLOR_BUFFER_BIT); 1984 glEnable(GL_TEXTURE_2D); 1985 1986 // draw the red plane 1987 vverts(vtx, vr); 1988 glColorMask(1,0,0,1); 1989 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1990 1991 // draw the green plane 1992 vverts(vtx, vg); 1993 glColorMask(0,1,0,1); 1994 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1995 1996 // draw the blue plane 1997 vverts(vtx, vb); 1998 glColorMask(0,0,1,1); 1999 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2000 2001 // draw the white highlight (we use the last vertices) 2002 glDisable(GL_TEXTURE_2D); 2003 glColorMask(1,1,1,1); 2004 glColor4f(vg, vg, vg, 1); 2005 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2006 hw.flip(screenBounds); 2007 } 2008 2009 h_stretch hverts(hw_w, hw_h); 2010 glDisable(GL_BLEND); 2011 glDisable(GL_TEXTURE_2D); 2012 glColorMask(1,1,1,1); 2013 for (int i=0 ; i<nbFrames ; i++) { 2014 const float v = itg(i); 2015 hverts(vtx, v); 2016 glClear(GL_COLOR_BUFFER_BIT); 2017 glColor4f(1-v, 1-v, 1-v, 1); 2018 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2019 hw.flip(screenBounds); 2020 } 2021 2022 glColorMask(1,1,1,1); 2023 glEnable(GL_SCISSOR_TEST); 2024 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2025 glDeleteTextures(1, &tname); 2026 glDisable(GL_TEXTURE_2D); 2027 return NO_ERROR; 2028} 2029 2030status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 2031{ 2032 status_t result = PERMISSION_DENIED; 2033 2034 if (!GLExtensions::getInstance().haveFramebufferObject()) 2035 return INVALID_OPERATION; 2036 2037 2038 // get screen geometry 2039 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2040 const uint32_t hw_w = hw.getWidth(); 2041 const uint32_t hw_h = hw.getHeight(); 2042 const Region screenBounds(hw.bounds()); 2043 2044 GLfloat u, v; 2045 GLuint tname; 2046 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2047 if (result != NO_ERROR) { 2048 return result; 2049 } 2050 2051 GLfloat vtx[8]; 2052 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2053 glBindTexture(GL_TEXTURE_2D, tname); 2054 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2055 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2056 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2057 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2058 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2059 glVertexPointer(2, GL_FLOAT, 0, vtx); 2060 2061 class s_curve_interpolator { 2062 const float nbFrames, s, v; 2063 public: 2064 s_curve_interpolator(int nbFrames, float s) 2065 : nbFrames(1.0f / (nbFrames-1)), s(s), 2066 v(1.0f + expf(-s + 0.5f*s)) { 2067 } 2068 float operator()(int f) { 2069 const float x = f * nbFrames; 2070 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2071 } 2072 }; 2073 2074 class v_stretch { 2075 const GLfloat hw_w, hw_h; 2076 public: 2077 v_stretch(uint32_t hw_w, uint32_t hw_h) 2078 : hw_w(hw_w), hw_h(hw_h) { 2079 } 2080 void operator()(GLfloat* vtx, float v) { 2081 const GLfloat w = hw_w + (hw_w * v); 2082 const GLfloat h = hw_h - (hw_h * v); 2083 const GLfloat x = (hw_w - w) * 0.5f; 2084 const GLfloat y = (hw_h - h) * 0.5f; 2085 vtx[0] = x; vtx[1] = y; 2086 vtx[2] = x; vtx[3] = y + h; 2087 vtx[4] = x + w; vtx[5] = y + h; 2088 vtx[6] = x + w; vtx[7] = y; 2089 } 2090 }; 2091 2092 class h_stretch { 2093 const GLfloat hw_w, hw_h; 2094 public: 2095 h_stretch(uint32_t hw_w, uint32_t hw_h) 2096 : hw_w(hw_w), hw_h(hw_h) { 2097 } 2098 void operator()(GLfloat* vtx, float v) { 2099 const GLfloat w = hw_w - (hw_w * v); 2100 const GLfloat h = 1.0f; 2101 const GLfloat x = (hw_w - w) * 0.5f; 2102 const GLfloat y = (hw_h - h) * 0.5f; 2103 vtx[0] = x; vtx[1] = y; 2104 vtx[2] = x; vtx[3] = y + h; 2105 vtx[4] = x + w; vtx[5] = y + h; 2106 vtx[6] = x + w; vtx[7] = y; 2107 } 2108 }; 2109 2110 // the full animation is 12 frames 2111 int nbFrames = 8; 2112 s_curve_interpolator itr(nbFrames, 7.5f); 2113 s_curve_interpolator itg(nbFrames, 8.0f); 2114 s_curve_interpolator itb(nbFrames, 8.5f); 2115 2116 h_stretch hverts(hw_w, hw_h); 2117 glDisable(GL_BLEND); 2118 glDisable(GL_TEXTURE_2D); 2119 glColorMask(1,1,1,1); 2120 for (int i=nbFrames-1 ; i>=0 ; i--) { 2121 const float v = itg(i); 2122 hverts(vtx, v); 2123 glClear(GL_COLOR_BUFFER_BIT); 2124 glColor4f(1-v, 1-v, 1-v, 1); 2125 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2126 hw.flip(screenBounds); 2127 } 2128 2129 nbFrames = 4; 2130 v_stretch vverts(hw_w, hw_h); 2131 glEnable(GL_BLEND); 2132 glBlendFunc(GL_ONE, GL_ONE); 2133 for (int i=nbFrames-1 ; i>=0 ; i--) { 2134 float x, y, w, h; 2135 const float vr = itr(i); 2136 const float vg = itg(i); 2137 const float vb = itb(i); 2138 2139 // clear screen 2140 glColorMask(1,1,1,1); 2141 glClear(GL_COLOR_BUFFER_BIT); 2142 glEnable(GL_TEXTURE_2D); 2143 2144 // draw the red plane 2145 vverts(vtx, vr); 2146 glColorMask(1,0,0,1); 2147 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2148 2149 // draw the green plane 2150 vverts(vtx, vg); 2151 glColorMask(0,1,0,1); 2152 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2153 2154 // draw the blue plane 2155 vverts(vtx, vb); 2156 glColorMask(0,0,1,1); 2157 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2158 2159 hw.flip(screenBounds); 2160 } 2161 2162 glColorMask(1,1,1,1); 2163 glEnable(GL_SCISSOR_TEST); 2164 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2165 glDeleteTextures(1, &tname); 2166 glDisable(GL_TEXTURE_2D); 2167 2168 return NO_ERROR; 2169} 2170 2171// --------------------------------------------------------------------------- 2172 2173status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2174{ 2175 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2176 if (!hw.canDraw()) { 2177 // we're already off 2178 return NO_ERROR; 2179 } 2180 2181 // turn off hwc while we're doing the animation 2182 hw.getHwComposer().disable(); 2183 // and make sure to turn it back on (if needed) next time we compose 2184 invalidateHwcGeometry(); 2185 2186 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2187 electronBeamOffAnimationImplLocked(); 2188 } 2189 2190 // always clear the whole screen at the end of the animation 2191 glClearColor(0,0,0,1); 2192 glDisable(GL_SCISSOR_TEST); 2193 glClear(GL_COLOR_BUFFER_BIT); 2194 glEnable(GL_SCISSOR_TEST); 2195 hw.flip( Region(hw.bounds()) ); 2196 2197 return NO_ERROR; 2198} 2199 2200status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2201{ 2202 class MessageTurnElectronBeamOff : public MessageBase { 2203 SurfaceFlinger* flinger; 2204 int32_t mode; 2205 status_t result; 2206 public: 2207 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2208 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2209 } 2210 status_t getResult() const { 2211 return result; 2212 } 2213 virtual bool handler() { 2214 Mutex::Autolock _l(flinger->mStateLock); 2215 result = flinger->turnElectronBeamOffImplLocked(mode); 2216 return true; 2217 } 2218 }; 2219 2220 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2221 status_t res = postMessageSync(msg); 2222 if (res == NO_ERROR) { 2223 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2224 2225 // work-around: when the power-manager calls us we activate the 2226 // animation. eventually, the "on" animation will be called 2227 // by the power-manager itself 2228 mElectronBeamAnimationMode = mode; 2229 } 2230 return res; 2231} 2232 2233// --------------------------------------------------------------------------- 2234 2235status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2236{ 2237 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2238 if (hw.canDraw()) { 2239 // we're already on 2240 return NO_ERROR; 2241 } 2242 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2243 electronBeamOnAnimationImplLocked(); 2244 } 2245 2246 // make sure to redraw the whole screen when the animation is done 2247 mDirtyRegion.set(hw.bounds()); 2248 signalEvent(); 2249 2250 return NO_ERROR; 2251} 2252 2253status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2254{ 2255 class MessageTurnElectronBeamOn : public MessageBase { 2256 SurfaceFlinger* flinger; 2257 int32_t mode; 2258 status_t result; 2259 public: 2260 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2261 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2262 } 2263 status_t getResult() const { 2264 return result; 2265 } 2266 virtual bool handler() { 2267 Mutex::Autolock _l(flinger->mStateLock); 2268 result = flinger->turnElectronBeamOnImplLocked(mode); 2269 return true; 2270 } 2271 }; 2272 2273 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2274 return NO_ERROR; 2275} 2276 2277// --------------------------------------------------------------------------- 2278 2279status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2280 sp<IMemoryHeap>* heap, 2281 uint32_t* w, uint32_t* h, PixelFormat* f, 2282 uint32_t sw, uint32_t sh, 2283 uint32_t minLayerZ, uint32_t maxLayerZ) 2284{ 2285 status_t result = PERMISSION_DENIED; 2286 2287 // only one display supported for now 2288 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2289 return BAD_VALUE; 2290 2291 if (!GLExtensions::getInstance().haveFramebufferObject()) 2292 return INVALID_OPERATION; 2293 2294 // get screen geometry 2295 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2296 const uint32_t hw_w = hw.getWidth(); 2297 const uint32_t hw_h = hw.getHeight(); 2298 2299 if ((sw > hw_w) || (sh > hw_h)) 2300 return BAD_VALUE; 2301 2302 sw = (!sw) ? hw_w : sw; 2303 sh = (!sh) ? hw_h : sh; 2304 const size_t size = sw * sh * 4; 2305 2306 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2307 // sw, sh, minLayerZ, maxLayerZ); 2308 2309 // make sure to clear all GL error flags 2310 while ( glGetError() != GL_NO_ERROR ) ; 2311 2312 // create a FBO 2313 GLuint name, tname; 2314 glGenRenderbuffersOES(1, &tname); 2315 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2316 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2317 glGenFramebuffersOES(1, &name); 2318 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2319 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2320 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2321 2322 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2323 2324 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2325 2326 // invert everything, b/c glReadPixel() below will invert the FB 2327 glViewport(0, 0, sw, sh); 2328 glScissor(0, 0, sw, sh); 2329 glEnable(GL_SCISSOR_TEST); 2330 glMatrixMode(GL_PROJECTION); 2331 glPushMatrix(); 2332 glLoadIdentity(); 2333 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2334 glMatrixMode(GL_MODELVIEW); 2335 2336 // redraw the screen entirely... 2337 glClearColor(0,0,0,1); 2338 glClear(GL_COLOR_BUFFER_BIT); 2339 2340 const LayerVector& layers(mDrawingState.layersSortedByZ); 2341 const size_t count = layers.size(); 2342 for (size_t i=0 ; i<count ; ++i) { 2343 const sp<LayerBase>& layer(layers[i]); 2344 const uint32_t flags = layer->drawingState().flags; 2345 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2346 const uint32_t z = layer->drawingState().z; 2347 if (z >= minLayerZ && z <= maxLayerZ) { 2348 layer->drawForSreenShot(); 2349 } 2350 } 2351 } 2352 2353 // XXX: this is needed on tegra 2354 glEnable(GL_SCISSOR_TEST); 2355 glScissor(0, 0, sw, sh); 2356 2357 // check for errors and return screen capture 2358 if (glGetError() != GL_NO_ERROR) { 2359 // error while rendering 2360 result = INVALID_OPERATION; 2361 } else { 2362 // allocate shared memory large enough to hold the 2363 // screen capture 2364 sp<MemoryHeapBase> base( 2365 new MemoryHeapBase(size, 0, "screen-capture") ); 2366 void* const ptr = base->getBase(); 2367 if (ptr) { 2368 // capture the screen with glReadPixels() 2369 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2370 if (glGetError() == GL_NO_ERROR) { 2371 *heap = base; 2372 *w = sw; 2373 *h = sh; 2374 *f = PIXEL_FORMAT_RGBA_8888; 2375 result = NO_ERROR; 2376 } 2377 } else { 2378 result = NO_MEMORY; 2379 } 2380 } 2381 glEnable(GL_SCISSOR_TEST); 2382 glViewport(0, 0, hw_w, hw_h); 2383 glMatrixMode(GL_PROJECTION); 2384 glPopMatrix(); 2385 glMatrixMode(GL_MODELVIEW); 2386 } else { 2387 result = BAD_VALUE; 2388 } 2389 2390 // release FBO resources 2391 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2392 glDeleteRenderbuffersOES(1, &tname); 2393 glDeleteFramebuffersOES(1, &name); 2394 2395 hw.compositionComplete(); 2396 2397 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2398 2399 return result; 2400} 2401 2402 2403status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2404 sp<IMemoryHeap>* heap, 2405 uint32_t* width, uint32_t* height, PixelFormat* format, 2406 uint32_t sw, uint32_t sh, 2407 uint32_t minLayerZ, uint32_t maxLayerZ) 2408{ 2409 // only one display supported for now 2410 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2411 return BAD_VALUE; 2412 2413 if (!GLExtensions::getInstance().haveFramebufferObject()) 2414 return INVALID_OPERATION; 2415 2416 class MessageCaptureScreen : public MessageBase { 2417 SurfaceFlinger* flinger; 2418 DisplayID dpy; 2419 sp<IMemoryHeap>* heap; 2420 uint32_t* w; 2421 uint32_t* h; 2422 PixelFormat* f; 2423 uint32_t sw; 2424 uint32_t sh; 2425 uint32_t minLayerZ; 2426 uint32_t maxLayerZ; 2427 status_t result; 2428 public: 2429 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2430 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2431 uint32_t sw, uint32_t sh, 2432 uint32_t minLayerZ, uint32_t maxLayerZ) 2433 : flinger(flinger), dpy(dpy), 2434 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2435 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2436 result(PERMISSION_DENIED) 2437 { 2438 } 2439 status_t getResult() const { 2440 return result; 2441 } 2442 virtual bool handler() { 2443 Mutex::Autolock _l(flinger->mStateLock); 2444 2445 // if we have secure windows, never allow the screen capture 2446 if (flinger->mSecureFrameBuffer) 2447 return true; 2448 2449 result = flinger->captureScreenImplLocked(dpy, 2450 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2451 2452 return true; 2453 } 2454 }; 2455 2456 sp<MessageBase> msg = new MessageCaptureScreen(this, 2457 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2458 status_t res = postMessageSync(msg); 2459 if (res == NO_ERROR) { 2460 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2461 } 2462 return res; 2463} 2464 2465// --------------------------------------------------------------------------- 2466 2467sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2468{ 2469 sp<Layer> result; 2470 Mutex::Autolock _l(mStateLock); 2471 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2472 return result; 2473} 2474 2475// --------------------------------------------------------------------------- 2476 2477Client::Client(const sp<SurfaceFlinger>& flinger) 2478 : mFlinger(flinger), mNameGenerator(1) 2479{ 2480} 2481 2482Client::~Client() 2483{ 2484 const size_t count = mLayers.size(); 2485 for (size_t i=0 ; i<count ; i++) { 2486 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2487 if (layer != 0) { 2488 mFlinger->removeLayer(layer); 2489 } 2490 } 2491} 2492 2493status_t Client::initCheck() const { 2494 return NO_ERROR; 2495} 2496 2497size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2498{ 2499 Mutex::Autolock _l(mLock); 2500 size_t name = mNameGenerator++; 2501 mLayers.add(name, layer); 2502 return name; 2503} 2504 2505void Client::detachLayer(const LayerBaseClient* layer) 2506{ 2507 Mutex::Autolock _l(mLock); 2508 // we do a linear search here, because this doesn't happen often 2509 const size_t count = mLayers.size(); 2510 for (size_t i=0 ; i<count ; i++) { 2511 if (mLayers.valueAt(i) == layer) { 2512 mLayers.removeItemsAt(i, 1); 2513 break; 2514 } 2515 } 2516} 2517sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2518{ 2519 Mutex::Autolock _l(mLock); 2520 sp<LayerBaseClient> lbc; 2521 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2522 if (layer != 0) { 2523 lbc = layer.promote(); 2524 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2525 } 2526 return lbc; 2527} 2528 2529 2530status_t Client::onTransact( 2531 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2532{ 2533 // these must be checked 2534 IPCThreadState* ipc = IPCThreadState::self(); 2535 const int pid = ipc->getCallingPid(); 2536 const int uid = ipc->getCallingUid(); 2537 const int self_pid = getpid(); 2538 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2539 // we're called from a different process, do the real check 2540 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2541 { 2542 LOGE("Permission Denial: " 2543 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2544 return PERMISSION_DENIED; 2545 } 2546 } 2547 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2548} 2549 2550 2551sp<ISurface> Client::createSurface( 2552 ISurfaceComposerClient::surface_data_t* params, 2553 const String8& name, 2554 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2555 uint32_t flags) 2556{ 2557 /* 2558 * createSurface must be called from the GL thread so that it can 2559 * have access to the GL context. 2560 */ 2561 2562 class MessageCreateSurface : public MessageBase { 2563 sp<ISurface> result; 2564 SurfaceFlinger* flinger; 2565 ISurfaceComposerClient::surface_data_t* params; 2566 Client* client; 2567 const String8& name; 2568 DisplayID display; 2569 uint32_t w, h; 2570 PixelFormat format; 2571 uint32_t flags; 2572 public: 2573 MessageCreateSurface(SurfaceFlinger* flinger, 2574 ISurfaceComposerClient::surface_data_t* params, 2575 const String8& name, Client* client, 2576 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2577 uint32_t flags) 2578 : flinger(flinger), params(params), client(client), name(name), 2579 display(display), w(w), h(h), format(format), flags(flags) 2580 { 2581 } 2582 sp<ISurface> getResult() const { return result; } 2583 virtual bool handler() { 2584 result = flinger->createSurface(params, name, client, 2585 display, w, h, format, flags); 2586 return true; 2587 } 2588 }; 2589 2590 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2591 params, name, this, display, w, h, format, flags); 2592 mFlinger->postMessageSync(msg); 2593 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2594} 2595status_t Client::destroySurface(SurfaceID sid) { 2596 return mFlinger->removeSurface(this, sid); 2597} 2598 2599// --------------------------------------------------------------------------- 2600 2601GraphicBufferAlloc::GraphicBufferAlloc() {} 2602 2603GraphicBufferAlloc::~GraphicBufferAlloc() {} 2604 2605sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2606 PixelFormat format, uint32_t usage, status_t* error) { 2607 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2608 status_t err = graphicBuffer->initCheck(); 2609 *error = err; 2610 if (err != 0 || graphicBuffer->handle == 0) { 2611 if (err == NO_MEMORY) { 2612 GraphicBuffer::dumpAllocationsToSystemLog(); 2613 } 2614 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2615 "failed (%s), handle=%p", 2616 w, h, strerror(-err), graphicBuffer->handle); 2617 return 0; 2618 } 2619 return graphicBuffer; 2620} 2621 2622// --------------------------------------------------------------------------- 2623 2624GraphicPlane::GraphicPlane() 2625 : mHw(0) 2626{ 2627} 2628 2629GraphicPlane::~GraphicPlane() { 2630 delete mHw; 2631} 2632 2633bool GraphicPlane::initialized() const { 2634 return mHw ? true : false; 2635} 2636 2637int GraphicPlane::getWidth() const { 2638 return mWidth; 2639} 2640 2641int GraphicPlane::getHeight() const { 2642 return mHeight; 2643} 2644 2645void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2646{ 2647 mHw = hw; 2648 2649 // initialize the display orientation transform. 2650 // it's a constant that should come from the display driver. 2651 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2652 char property[PROPERTY_VALUE_MAX]; 2653 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2654 //displayOrientation 2655 switch (atoi(property)) { 2656 case 90: 2657 displayOrientation = ISurfaceComposer::eOrientation90; 2658 break; 2659 case 270: 2660 displayOrientation = ISurfaceComposer::eOrientation270; 2661 break; 2662 } 2663 } 2664 2665 const float w = hw->getWidth(); 2666 const float h = hw->getHeight(); 2667 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2668 &mDisplayTransform); 2669 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2670 mDisplayWidth = h; 2671 mDisplayHeight = w; 2672 } else { 2673 mDisplayWidth = w; 2674 mDisplayHeight = h; 2675 } 2676 2677 setOrientation(ISurfaceComposer::eOrientationDefault); 2678} 2679 2680status_t GraphicPlane::orientationToTransfrom( 2681 int orientation, int w, int h, Transform* tr) 2682{ 2683 uint32_t flags = 0; 2684 switch (orientation) { 2685 case ISurfaceComposer::eOrientationDefault: 2686 flags = Transform::ROT_0; 2687 break; 2688 case ISurfaceComposer::eOrientation90: 2689 flags = Transform::ROT_90; 2690 break; 2691 case ISurfaceComposer::eOrientation180: 2692 flags = Transform::ROT_180; 2693 break; 2694 case ISurfaceComposer::eOrientation270: 2695 flags = Transform::ROT_270; 2696 break; 2697 default: 2698 return BAD_VALUE; 2699 } 2700 tr->set(flags, w, h); 2701 return NO_ERROR; 2702} 2703 2704status_t GraphicPlane::setOrientation(int orientation) 2705{ 2706 // If the rotation can be handled in hardware, this is where 2707 // the magic should happen. 2708 2709 const DisplayHardware& hw(displayHardware()); 2710 const float w = mDisplayWidth; 2711 const float h = mDisplayHeight; 2712 mWidth = int(w); 2713 mHeight = int(h); 2714 2715 Transform orientationTransform; 2716 GraphicPlane::orientationToTransfrom(orientation, w, h, 2717 &orientationTransform); 2718 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2719 mWidth = int(h); 2720 mHeight = int(w); 2721 } 2722 2723 mOrientation = orientation; 2724 mGlobalTransform = mDisplayTransform * orientationTransform; 2725 return NO_ERROR; 2726} 2727 2728const DisplayHardware& GraphicPlane::displayHardware() const { 2729 return *mHw; 2730} 2731 2732DisplayHardware& GraphicPlane::editDisplayHardware() { 2733 return *mHw; 2734} 2735 2736const Transform& GraphicPlane::transform() const { 2737 return mGlobalTransform; 2738} 2739 2740EGLDisplay GraphicPlane::getEGLDisplay() const { 2741 return mHw->getEGLDisplay(); 2742} 2743 2744// --------------------------------------------------------------------------- 2745 2746}; // namespace android 2747