SurfaceFlinger.cpp revision 9c6e297271ec9af9d974242d89cfa08cb6ceaa0a
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 mResizeTransationPending(false), 83 mLayersRemoved(false), 84 mBootTime(systemTime()), 85 mVisibleRegionsDirty(false), 86 mHwWorkListDirty(false), 87 mDeferReleaseConsole(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 textureData[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, textureData); 287 288 glViewport(0, 0, w, h); 289 glMatrixMode(GL_PROJECTION); 290 glLoadIdentity(); 291 // put the origin in the left-bottom corner 292 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 293 294 mReadyToRunBarrier.open(); 295 296 /* 297 * We're now ready to accept clients... 298 */ 299 300 // start boot animation 301 property_set("ctl.start", "bootanim"); 302 303 return NO_ERROR; 304} 305 306// ---------------------------------------------------------------------------- 307#if 0 308#pragma mark - 309#pragma mark Events Handler 310#endif 311 312void SurfaceFlinger::waitForEvent() 313{ 314 while (true) { 315 nsecs_t timeout = -1; 316 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 317 if (UNLIKELY(isFrozen())) { 318 // wait 5 seconds 319 const nsecs_t now = systemTime(); 320 if (mFreezeDisplayTime == 0) { 321 mFreezeDisplayTime = now; 322 } 323 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 324 timeout = waitTime>0 ? waitTime : 0; 325 } 326 327 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 328 329 // see if we timed out 330 if (isFrozen()) { 331 const nsecs_t now = systemTime(); 332 nsecs_t frozenTime = (now - mFreezeDisplayTime); 333 if (frozenTime >= freezeDisplayTimeout) { 334 // we timed out and are still frozen 335 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 336 mFreezeDisplay, mFreezeCount); 337 mFreezeDisplayTime = 0; 338 mFreezeCount = 0; 339 mFreezeDisplay = false; 340 } 341 } 342 343 if (msg != 0) { 344 switch (msg->what) { 345 case MessageQueue::INVALIDATE: 346 // invalidate message, just return to the main loop 347 return; 348 } 349 } 350 } 351} 352 353void SurfaceFlinger::signalEvent() { 354 mEventQueue.invalidate(); 355} 356 357bool SurfaceFlinger::authenticateSurfaceTexture( 358 const sp<ISurfaceTexture>& surfaceTexture) const { 359 Mutex::Autolock _l(mStateLock); 360 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 361 362 // Check the visible layer list for the ISurface 363 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 364 size_t count = currentLayers.size(); 365 for (size_t i=0 ; i<count ; i++) { 366 const sp<LayerBase>& layer(currentLayers[i]); 367 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 368 if (lbc != NULL) { 369 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 370 if (lbcBinder == surfaceTextureBinder) { 371 return true; 372 } 373 } 374 } 375 376 // Check the layers in the purgatory. This check is here so that if a 377 // SurfaceTexture gets destroyed before all the clients are done using it, 378 // the error will not be reported as "surface XYZ is not authenticated", but 379 // will instead fail later on when the client tries to use the surface, 380 // which should be reported as "surface XYZ returned an -ENODEV". The 381 // purgatorized layers are no less authentic than the visible ones, so this 382 // should not cause any harm. 383 size_t purgatorySize = mLayerPurgatory.size(); 384 for (size_t i=0 ; i<purgatorySize ; i++) { 385 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 386 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 387 if (lbc != NULL) { 388 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 389 if (lbcBinder == surfaceTextureBinder) { 390 return true; 391 } 392 } 393 } 394 395 return false; 396} 397 398status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 399 nsecs_t reltime, uint32_t flags) 400{ 401 return mEventQueue.postMessage(msg, reltime, flags); 402} 403 404status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 405 nsecs_t reltime, uint32_t flags) 406{ 407 status_t res = mEventQueue.postMessage(msg, reltime, flags); 408 if (res == NO_ERROR) { 409 msg->wait(); 410 } 411 return res; 412} 413 414// ---------------------------------------------------------------------------- 415#if 0 416#pragma mark - 417#pragma mark Main loop 418#endif 419 420bool SurfaceFlinger::threadLoop() 421{ 422 waitForEvent(); 423 424 // check for transactions 425 if (UNLIKELY(mConsoleSignals)) { 426 handleConsoleEvents(); 427 } 428 429 // if we're in a global transaction, don't do anything. 430 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 431 uint32_t transactionFlags = peekTransactionFlags(mask); 432 if (UNLIKELY(transactionFlags)) { 433 handleTransaction(transactionFlags); 434 } 435 436 // post surfaces (if needed) 437 handlePageFlip(); 438 439 if (UNLIKELY(mHwWorkListDirty)) { 440 // build the h/w work list 441 handleWorkList(); 442 } 443 444 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 445 if (LIKELY(hw.canDraw() && !isFrozen())) { 446 // repaint the framebuffer (if needed) 447 448 const int index = hw.getCurrentBufferIndex(); 449 GraphicLog& logger(GraphicLog::getInstance()); 450 451 logger.log(GraphicLog::SF_REPAINT, index); 452 handleRepaint(); 453 454 // inform the h/w that we're done compositing 455 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 456 hw.compositionComplete(); 457 458 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 459 postFramebuffer(); 460 461 logger.log(GraphicLog::SF_REPAINT_DONE, index); 462 } else { 463 // pretend we did the post 464 hw.compositionComplete(); 465 usleep(16667); // 60 fps period 466 } 467 return true; 468} 469 470void SurfaceFlinger::postFramebuffer() 471{ 472 if (!mSwapRegion.isEmpty()) { 473 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 474 const nsecs_t now = systemTime(); 475 mDebugInSwapBuffers = now; 476 hw.flip(mSwapRegion); 477 mLastSwapBufferTime = systemTime() - now; 478 mDebugInSwapBuffers = 0; 479 mSwapRegion.clear(); 480 } 481} 482 483void SurfaceFlinger::handleConsoleEvents() 484{ 485 // something to do with the console 486 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 487 488 int what = android_atomic_and(0, &mConsoleSignals); 489 if (what & eConsoleAcquired) { 490 hw.acquireScreen(); 491 // this is a temporary work-around, eventually this should be called 492 // by the power-manager 493 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 494 } 495 496 if (mDeferReleaseConsole && hw.isScreenAcquired()) { 497 // We got the release signal before the acquire signal 498 mDeferReleaseConsole = false; 499 hw.releaseScreen(); 500 } 501 502 if (what & eConsoleReleased) { 503 if (hw.isScreenAcquired()) { 504 hw.releaseScreen(); 505 } else { 506 mDeferReleaseConsole = true; 507 } 508 } 509 510 mDirtyRegion.set(hw.bounds()); 511} 512 513void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 514{ 515 Mutex::Autolock _l(mStateLock); 516 const nsecs_t now = systemTime(); 517 mDebugInTransaction = now; 518 519 // Here we're guaranteed that some transaction flags are set 520 // so we can call handleTransactionLocked() unconditionally. 521 // We call getTransactionFlags(), which will also clear the flags, 522 // with mStateLock held to guarantee that mCurrentState won't change 523 // until the transaction is committed. 524 525 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 526 transactionFlags = getTransactionFlags(mask); 527 handleTransactionLocked(transactionFlags); 528 529 mLastTransactionTime = systemTime() - now; 530 mDebugInTransaction = 0; 531 invalidateHwcGeometry(); 532 // here the transaction has been committed 533} 534 535void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 536{ 537 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 538 const size_t count = currentLayers.size(); 539 540 /* 541 * Traversal of the children 542 * (perform the transaction for each of them if needed) 543 */ 544 545 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 546 if (layersNeedTransaction) { 547 for (size_t i=0 ; i<count ; i++) { 548 const sp<LayerBase>& layer = currentLayers[i]; 549 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 550 if (!trFlags) continue; 551 552 const uint32_t flags = layer->doTransaction(0); 553 if (flags & Layer::eVisibleRegion) 554 mVisibleRegionsDirty = true; 555 } 556 } 557 558 /* 559 * Perform our own transaction if needed 560 */ 561 562 if (transactionFlags & eTransactionNeeded) { 563 if (mCurrentState.orientation != mDrawingState.orientation) { 564 // the orientation has changed, recompute all visible regions 565 // and invalidate everything. 566 567 const int dpy = 0; 568 const int orientation = mCurrentState.orientation; 569 const uint32_t type = mCurrentState.orientationType; 570 GraphicPlane& plane(graphicPlane(dpy)); 571 plane.setOrientation(orientation); 572 573 // update the shared control block 574 const DisplayHardware& hw(plane.displayHardware()); 575 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 576 dcblk->orientation = orientation; 577 dcblk->w = plane.getWidth(); 578 dcblk->h = plane.getHeight(); 579 580 mVisibleRegionsDirty = true; 581 mDirtyRegion.set(hw.bounds()); 582 } 583 584 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 585 // freezing or unfreezing the display -> trigger animation if needed 586 mFreezeDisplay = mCurrentState.freezeDisplay; 587 if (mFreezeDisplay) 588 mFreezeDisplayTime = 0; 589 } 590 591 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 592 // layers have been added 593 mVisibleRegionsDirty = true; 594 } 595 596 // some layers might have been removed, so 597 // we need to update the regions they're exposing. 598 if (mLayersRemoved) { 599 mLayersRemoved = false; 600 mVisibleRegionsDirty = true; 601 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 602 const size_t count = previousLayers.size(); 603 for (size_t i=0 ; i<count ; i++) { 604 const sp<LayerBase>& layer(previousLayers[i]); 605 if (currentLayers.indexOf( layer ) < 0) { 606 // this layer is not visible anymore 607 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 608 } 609 } 610 } 611 } 612 613 commitTransaction(); 614} 615 616sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 617{ 618 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 619} 620 621void SurfaceFlinger::computeVisibleRegions( 622 const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 623{ 624 const GraphicPlane& plane(graphicPlane(0)); 625 const Transform& planeTransform(plane.transform()); 626 const DisplayHardware& hw(plane.displayHardware()); 627 const Region screenRegion(hw.bounds()); 628 629 Region aboveOpaqueLayers; 630 Region aboveCoveredLayers; 631 Region dirty; 632 633 bool secureFrameBuffer = false; 634 635 size_t i = currentLayers.size(); 636 while (i--) { 637 const sp<LayerBase>& layer = currentLayers[i]; 638 layer->validateVisibility(planeTransform); 639 640 // start with the whole surface at its current location 641 const Layer::State& s(layer->drawingState()); 642 643 /* 644 * opaqueRegion: area of a surface that is fully opaque. 645 */ 646 Region opaqueRegion; 647 648 /* 649 * visibleRegion: area of a surface that is visible on screen 650 * and not fully transparent. This is essentially the layer's 651 * footprint minus the opaque regions above it. 652 * Areas covered by a translucent surface are considered visible. 653 */ 654 Region visibleRegion; 655 656 /* 657 * coveredRegion: area of a surface that is covered by all 658 * visible regions above it (which includes the translucent areas). 659 */ 660 Region coveredRegion; 661 662 663 // handle hidden surfaces by setting the visible region to empty 664 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 665 const bool translucent = !layer->isOpaque(); 666 const Rect bounds(layer->visibleBounds()); 667 visibleRegion.set(bounds); 668 visibleRegion.andSelf(screenRegion); 669 if (!visibleRegion.isEmpty()) { 670 // Remove the transparent area from the visible region 671 if (translucent) { 672 visibleRegion.subtractSelf(layer->transparentRegionScreen); 673 } 674 675 // compute the opaque region 676 const int32_t layerOrientation = layer->getOrientation(); 677 if (s.alpha==255 && !translucent && 678 ((layerOrientation & Transform::ROT_INVALID) == false)) { 679 // the opaque region is the layer's footprint 680 opaqueRegion = visibleRegion; 681 } 682 } 683 } 684 685 // Clip the covered region to the visible region 686 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 687 688 // Update aboveCoveredLayers for next (lower) layer 689 aboveCoveredLayers.orSelf(visibleRegion); 690 691 // subtract the opaque region covered by the layers above us 692 visibleRegion.subtractSelf(aboveOpaqueLayers); 693 694 // compute this layer's dirty region 695 if (layer->contentDirty) { 696 // we need to invalidate the whole region 697 dirty = visibleRegion; 698 // as well, as the old visible region 699 dirty.orSelf(layer->visibleRegionScreen); 700 layer->contentDirty = false; 701 } else { 702 /* compute the exposed region: 703 * the exposed region consists of two components: 704 * 1) what's VISIBLE now and was COVERED before 705 * 2) what's EXPOSED now less what was EXPOSED before 706 * 707 * note that (1) is conservative, we start with the whole 708 * visible region but only keep what used to be covered by 709 * something -- which mean it may have been exposed. 710 * 711 * (2) handles areas that were not covered by anything but got 712 * exposed because of a resize. 713 */ 714 const Region newExposed = visibleRegion - coveredRegion; 715 const Region oldVisibleRegion = layer->visibleRegionScreen; 716 const Region oldCoveredRegion = layer->coveredRegionScreen; 717 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 718 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 719 } 720 dirty.subtractSelf(aboveOpaqueLayers); 721 722 // accumulate to the screen dirty region 723 dirtyRegion.orSelf(dirty); 724 725 // Update aboveOpaqueLayers for next (lower) layer 726 aboveOpaqueLayers.orSelf(opaqueRegion); 727 728 // Store the visible region is screen space 729 layer->setVisibleRegion(visibleRegion); 730 layer->setCoveredRegion(coveredRegion); 731 732 // If a secure layer is partially visible, lock-down the screen! 733 if (layer->isSecure() && !visibleRegion.isEmpty()) { 734 secureFrameBuffer = true; 735 } 736 } 737 738 // invalidate the areas where a layer was removed 739 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 740 mDirtyRegionRemovedLayer.clear(); 741 742 mSecureFrameBuffer = secureFrameBuffer; 743 opaqueRegion = aboveOpaqueLayers; 744} 745 746 747void SurfaceFlinger::commitTransaction() 748{ 749 mDrawingState = mCurrentState; 750 mResizeTransationPending = false; 751 mTransactionCV.broadcast(); 752} 753 754void SurfaceFlinger::handlePageFlip() 755{ 756 bool visibleRegions = mVisibleRegionsDirty; 757 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 758 visibleRegions |= lockPageFlip(currentLayers); 759 760 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 761 const Region screenRegion(hw.bounds()); 762 if (visibleRegions) { 763 Region opaqueRegion; 764 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 765 766 /* 767 * rebuild the visible layer list 768 */ 769 const size_t count = currentLayers.size(); 770 mVisibleLayersSortedByZ.clear(); 771 mVisibleLayersSortedByZ.setCapacity(count); 772 for (size_t i=0 ; i<count ; i++) { 773 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 774 mVisibleLayersSortedByZ.add(currentLayers[i]); 775 } 776 777 mWormholeRegion = screenRegion.subtract(opaqueRegion); 778 mVisibleRegionsDirty = false; 779 invalidateHwcGeometry(); 780 } 781 782 unlockPageFlip(currentLayers); 783 mDirtyRegion.andSelf(screenRegion); 784} 785 786void SurfaceFlinger::invalidateHwcGeometry() 787{ 788 mHwWorkListDirty = true; 789} 790 791bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 792{ 793 bool recomputeVisibleRegions = false; 794 size_t count = currentLayers.size(); 795 sp<LayerBase> const* layers = currentLayers.array(); 796 for (size_t i=0 ; i<count ; i++) { 797 const sp<LayerBase>& layer(layers[i]); 798 layer->lockPageFlip(recomputeVisibleRegions); 799 } 800 return recomputeVisibleRegions; 801} 802 803void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 804{ 805 const GraphicPlane& plane(graphicPlane(0)); 806 const Transform& planeTransform(plane.transform()); 807 size_t count = currentLayers.size(); 808 sp<LayerBase> const* layers = currentLayers.array(); 809 for (size_t i=0 ; i<count ; i++) { 810 const sp<LayerBase>& layer(layers[i]); 811 layer->unlockPageFlip(planeTransform, mDirtyRegion); 812 } 813} 814 815void SurfaceFlinger::handleWorkList() 816{ 817 mHwWorkListDirty = false; 818 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 819 if (hwc.initCheck() == NO_ERROR) { 820 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 821 const size_t count = currentLayers.size(); 822 hwc.createWorkList(count); 823 hwc_layer_t* const cur(hwc.getLayers()); 824 for (size_t i=0 ; cur && i<count ; i++) { 825 currentLayers[i]->setGeometry(&cur[i]); 826 if (mDebugDisableHWC || mDebugRegion) { 827 cur[i].compositionType = HWC_FRAMEBUFFER; 828 cur[i].flags |= HWC_SKIP_LAYER; 829 } 830 } 831 } 832} 833 834void SurfaceFlinger::handleRepaint() 835{ 836 // compute the invalid region 837 mSwapRegion.orSelf(mDirtyRegion); 838 839 if (UNLIKELY(mDebugRegion)) { 840 debugFlashRegions(); 841 } 842 843 // set the frame buffer 844 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 845 glMatrixMode(GL_MODELVIEW); 846 glLoadIdentity(); 847 848 uint32_t flags = hw.getFlags(); 849 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 850 (flags & DisplayHardware::BUFFER_PRESERVED)) 851 { 852 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 853 // takes a rectangle, we must make sure to update that whole 854 // rectangle in that case 855 if (flags & DisplayHardware::SWAP_RECTANGLE) { 856 // TODO: we really should be able to pass a region to 857 // SWAP_RECTANGLE so that we don't have to redraw all this. 858 mDirtyRegion.set(mSwapRegion.bounds()); 859 } else { 860 // in the BUFFER_PRESERVED case, obviously, we can update only 861 // what's needed and nothing more. 862 // NOTE: this is NOT a common case, as preserving the backbuffer 863 // is costly and usually involves copying the whole update back. 864 } 865 } else { 866 if (flags & DisplayHardware::PARTIAL_UPDATES) { 867 // We need to redraw the rectangle that will be updated 868 // (pushed to the framebuffer). 869 // This is needed because PARTIAL_UPDATES only takes one 870 // rectangle instead of a region (see DisplayHardware::flip()) 871 mDirtyRegion.set(mSwapRegion.bounds()); 872 } else { 873 // we need to redraw everything (the whole screen) 874 mDirtyRegion.set(hw.bounds()); 875 mSwapRegion = mDirtyRegion; 876 } 877 } 878 879 setupHardwareComposer(mDirtyRegion); 880 composeSurfaces(mDirtyRegion); 881 882 // update the swap region and clear the dirty region 883 mSwapRegion.orSelf(mDirtyRegion); 884 mDirtyRegion.clear(); 885} 886 887void SurfaceFlinger::setupHardwareComposer(Region& dirtyInOut) 888{ 889 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 890 HWComposer& hwc(hw.getHwComposer()); 891 hwc_layer_t* const cur(hwc.getLayers()); 892 if (!cur) { 893 return; 894 } 895 896 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 897 size_t count = layers.size(); 898 899 LOGE_IF(hwc.getNumLayers() != count, 900 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 901 hwc.getNumLayers(), count); 902 903 // just to be extra-safe, use the smallest count 904 if (hwc.initCheck() == NO_ERROR) { 905 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 906 } 907 908 /* 909 * update the per-frame h/w composer data for each layer 910 * and build the transparent region of the FB 911 */ 912 for (size_t i=0 ; i<count ; i++) { 913 const sp<LayerBase>& layer(layers[i]); 914 layer->setPerFrameData(&cur[i]); 915 } 916 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 917 status_t err = hwc.prepare(); 918 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 919 920 if (err == NO_ERROR) { 921 // what's happening here is tricky. 922 // we want to clear all the layers with the CLEAR_FB flags 923 // that are opaque. 924 // however, since some GPU are efficient at preserving 925 // the backbuffer, we want to take advantage of that so we do the 926 // clear only in the dirty region (other areas will be preserved 927 // on those GPUs). 928 // NOTE: on non backbuffer preserving GPU, the dirty region 929 // has already been expanded as needed, so the code is correct 930 // there too. 931 // 932 // However, the content of the framebuffer cannot be trusted when 933 // we switch to/from FB/OVERLAY, in which case we need to 934 // expand the dirty region to those areas too. 935 // 936 // Note also that there is a special case when switching from 937 // "no layers in FB" to "some layers in FB", where we need to redraw 938 // the entire FB, since some areas might contain uninitialized 939 // data. 940 // 941 // Also we want to make sure to not clear areas that belong to 942 // layers above that won't redraw (we would just erasing them), 943 // that is, we can't erase anything outside the dirty region. 944 945 Region transparent; 946 947 if (!fbLayerCount && hwc.getLayerCount(HWC_FRAMEBUFFER)) { 948 transparent.set(hw.getBounds()); 949 dirtyInOut = transparent; 950 } else { 951 for (size_t i=0 ; i<count ; i++) { 952 const sp<LayerBase>& layer(layers[i]); 953 if ((cur[i].hints & HWC_HINT_CLEAR_FB) && layer->isOpaque()) { 954 transparent.orSelf(layer->visibleRegionScreen); 955 } 956 bool isOverlay = (cur[i].compositionType != HWC_FRAMEBUFFER); 957 if (isOverlay != layer->isOverlay()) { 958 // we transitioned to/from overlay, so add this layer 959 // to the dirty region so the framebuffer can be either 960 // cleared or redrawn. 961 dirtyInOut.orSelf(layer->visibleRegionScreen); 962 } 963 layer->setOverlay(isOverlay); 964 } 965 // don't erase stuff outside the dirty region 966 transparent.andSelf(dirtyInOut); 967 } 968 969 /* 970 * clear the area of the FB that need to be transparent 971 */ 972 if (!transparent.isEmpty()) { 973 glClearColor(0,0,0,0); 974 Region::const_iterator it = transparent.begin(); 975 Region::const_iterator const end = transparent.end(); 976 const int32_t height = hw.getHeight(); 977 while (it != end) { 978 const Rect& r(*it++); 979 const GLint sy = height - (r.top + r.height()); 980 glScissor(r.left, sy, r.width(), r.height()); 981 glClear(GL_COLOR_BUFFER_BIT); 982 } 983 } 984 } 985} 986 987void SurfaceFlinger::composeSurfaces(const Region& dirty) 988{ 989 if (UNLIKELY(!mWormholeRegion.isEmpty())) { 990 // should never happen unless the window manager has a bug 991 // draw something... 992 drawWormhole(); 993 } 994 995 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 996 HWComposer& hwc(hw.getHwComposer()); 997 hwc_layer_t* const cur(hwc.getLayers()); 998 999 /* 1000 * and then, render the layers targeted at the framebuffer 1001 */ 1002 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1003 size_t count = layers.size(); 1004 for (size_t i=0 ; i<count ; i++) { 1005 if (cur && (cur[i].compositionType != HWC_FRAMEBUFFER)) { 1006 continue; 1007 } 1008 const sp<LayerBase>& layer(layers[i]); 1009 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 1010 if (!clip.isEmpty()) { 1011 layer->draw(clip); 1012 } 1013 } 1014} 1015 1016void SurfaceFlinger::debugFlashRegions() 1017{ 1018 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1019 const uint32_t flags = hw.getFlags(); 1020 const int32_t height = hw.getHeight(); 1021 if (mSwapRegion.isEmpty()) { 1022 return; 1023 } 1024 1025 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 1026 (flags & DisplayHardware::BUFFER_PRESERVED))) { 1027 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 1028 mDirtyRegion.bounds() : hw.bounds()); 1029 composeSurfaces(repaint); 1030 } 1031 1032 glDisable(GL_BLEND); 1033 glDisable(GL_DITHER); 1034 glDisable(GL_SCISSOR_TEST); 1035 1036 static int toggle = 0; 1037 toggle = 1 - toggle; 1038 if (toggle) { 1039 glColor4f(1, 0, 1, 1); 1040 } else { 1041 glColor4f(1, 1, 0, 1); 1042 } 1043 1044 Region::const_iterator it = mDirtyRegion.begin(); 1045 Region::const_iterator const end = mDirtyRegion.end(); 1046 while (it != end) { 1047 const Rect& r = *it++; 1048 GLfloat vertices[][2] = { 1049 { r.left, height - r.top }, 1050 { r.left, height - r.bottom }, 1051 { r.right, height - r.bottom }, 1052 { r.right, height - r.top } 1053 }; 1054 glVertexPointer(2, GL_FLOAT, 0, vertices); 1055 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1056 } 1057 1058 hw.flip(mSwapRegion); 1059 1060 if (mDebugRegion > 1) 1061 usleep(mDebugRegion * 1000); 1062 1063 glEnable(GL_SCISSOR_TEST); 1064} 1065 1066void SurfaceFlinger::drawWormhole() const 1067{ 1068 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1069 if (region.isEmpty()) 1070 return; 1071 1072 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1073 const int32_t width = hw.getWidth(); 1074 const int32_t height = hw.getHeight(); 1075 1076 glDisable(GL_BLEND); 1077 glDisable(GL_DITHER); 1078 1079 if (LIKELY(!mDebugBackground)) { 1080 glClearColor(0,0,0,0); 1081 Region::const_iterator it = region.begin(); 1082 Region::const_iterator const end = region.end(); 1083 while (it != end) { 1084 const Rect& r = *it++; 1085 const GLint sy = height - (r.top + r.height()); 1086 glScissor(r.left, sy, r.width(), r.height()); 1087 glClear(GL_COLOR_BUFFER_BIT); 1088 } 1089 } else { 1090 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1091 { width, height }, { 0, height } }; 1092 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1093 glVertexPointer(2, GL_SHORT, 0, vertices); 1094 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1095 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1096#if defined(GL_OES_EGL_image_external) 1097 if (GLExtensions::getInstance().haveTextureExternal()) { 1098 glDisable(GL_TEXTURE_EXTERNAL_OES); 1099 } 1100#endif 1101 glEnable(GL_TEXTURE_2D); 1102 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1103 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1104 glMatrixMode(GL_TEXTURE); 1105 glLoadIdentity(); 1106 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1107 Region::const_iterator it = region.begin(); 1108 Region::const_iterator const end = region.end(); 1109 while (it != end) { 1110 const Rect& r = *it++; 1111 const GLint sy = height - (r.top + r.height()); 1112 glScissor(r.left, sy, r.width(), r.height()); 1113 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1114 } 1115 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1116 glDisable(GL_TEXTURE_2D); 1117 glLoadIdentity(); 1118 glMatrixMode(GL_MODELVIEW); 1119 } 1120} 1121 1122void SurfaceFlinger::debugShowFPS() const 1123{ 1124 static int mFrameCount; 1125 static int mLastFrameCount = 0; 1126 static nsecs_t mLastFpsTime = 0; 1127 static float mFps = 0; 1128 mFrameCount++; 1129 nsecs_t now = systemTime(); 1130 nsecs_t diff = now - mLastFpsTime; 1131 if (diff > ms2ns(250)) { 1132 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1133 mLastFpsTime = now; 1134 mLastFrameCount = mFrameCount; 1135 } 1136 // XXX: mFPS has the value we want 1137 } 1138 1139status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1140{ 1141 Mutex::Autolock _l(mStateLock); 1142 addLayer_l(layer); 1143 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1144 return NO_ERROR; 1145} 1146 1147status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1148{ 1149 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1150 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1151} 1152 1153ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1154 const sp<LayerBaseClient>& lbc) 1155{ 1156 // attach this layer to the client 1157 size_t name = client->attachLayer(lbc); 1158 1159 Mutex::Autolock _l(mStateLock); 1160 1161 // add this layer to the current state list 1162 addLayer_l(lbc); 1163 1164 return ssize_t(name); 1165} 1166 1167status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1168{ 1169 Mutex::Autolock _l(mStateLock); 1170 status_t err = purgatorizeLayer_l(layer); 1171 if (err == NO_ERROR) 1172 setTransactionFlags(eTransactionNeeded); 1173 return err; 1174} 1175 1176status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1177{ 1178 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1179 if (lbc != 0) { 1180 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1181 } 1182 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1183 if (index >= 0) { 1184 mLayersRemoved = true; 1185 return NO_ERROR; 1186 } 1187 return status_t(index); 1188} 1189 1190status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1191{ 1192 // First add the layer to the purgatory list, which makes sure it won't 1193 // go away, then remove it from the main list (through a transaction). 1194 ssize_t err = removeLayer_l(layerBase); 1195 if (err >= 0) { 1196 mLayerPurgatory.add(layerBase); 1197 } 1198 1199 layerBase->onRemoved(); 1200 1201 // it's possible that we don't find a layer, because it might 1202 // have been destroyed already -- this is not technically an error 1203 // from the user because there is a race between Client::destroySurface(), 1204 // ~Client() and ~ISurface(). 1205 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1206} 1207 1208status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1209{ 1210 layer->forceVisibilityTransaction(); 1211 setTransactionFlags(eTraversalNeeded); 1212 return NO_ERROR; 1213} 1214 1215uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1216{ 1217 return android_atomic_release_load(&mTransactionFlags); 1218} 1219 1220uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1221{ 1222 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1223} 1224 1225uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1226{ 1227 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1228 if ((old & flags)==0) { // wake the server up 1229 signalEvent(); 1230 } 1231 return old; 1232} 1233 1234 1235void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state) { 1236 Mutex::Autolock _l(mStateLock); 1237 1238 uint32_t flags = 0; 1239 const size_t count = state.size(); 1240 for (size_t i=0 ; i<count ; i++) { 1241 const ComposerState& s(state[i]); 1242 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1243 flags |= setClientStateLocked(client, s.state); 1244 } 1245 if (flags) { 1246 setTransactionFlags(flags); 1247 } 1248 1249 signalEvent(); 1250 1251 // if there is a transaction with a resize, wait for it to 1252 // take effect before returning. 1253 while (mResizeTransationPending) { 1254 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1255 if (CC_UNLIKELY(err != NO_ERROR)) { 1256 // just in case something goes wrong in SF, return to the 1257 // called after a few seconds. 1258 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1259 mResizeTransationPending = false; 1260 break; 1261 } 1262 } 1263} 1264 1265status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1266{ 1267 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1268 return BAD_VALUE; 1269 1270 Mutex::Autolock _l(mStateLock); 1271 mCurrentState.freezeDisplay = 1; 1272 setTransactionFlags(eTransactionNeeded); 1273 1274 // flags is intended to communicate some sort of animation behavior 1275 // (for instance fading) 1276 return NO_ERROR; 1277} 1278 1279status_t SurfaceFlinger::unfreezeDisplay(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 = 0; 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 1293int SurfaceFlinger::setOrientation(DisplayID dpy, 1294 int orientation, uint32_t flags) 1295{ 1296 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1297 return BAD_VALUE; 1298 1299 Mutex::Autolock _l(mStateLock); 1300 if (mCurrentState.orientation != orientation) { 1301 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1302 mCurrentState.orientationType = flags; 1303 mCurrentState.orientation = orientation; 1304 setTransactionFlags(eTransactionNeeded); 1305 mTransactionCV.wait(mStateLock); 1306 } else { 1307 orientation = BAD_VALUE; 1308 } 1309 } 1310 return orientation; 1311} 1312 1313sp<ISurface> SurfaceFlinger::createSurface( 1314 ISurfaceComposerClient::surface_data_t* params, 1315 const String8& name, 1316 const sp<Client>& client, 1317 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1318 uint32_t flags) 1319{ 1320 sp<LayerBaseClient> layer; 1321 sp<ISurface> surfaceHandle; 1322 1323 if (int32_t(w|h) < 0) { 1324 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1325 int(w), int(h)); 1326 return surfaceHandle; 1327 } 1328 1329 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1330 sp<Layer> normalLayer; 1331 switch (flags & eFXSurfaceMask) { 1332 case eFXSurfaceNormal: 1333 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1334 layer = normalLayer; 1335 break; 1336 case eFXSurfaceBlur: 1337 // for now we treat Blur as Dim, until we can implement it 1338 // efficiently. 1339 case eFXSurfaceDim: 1340 layer = createDimSurface(client, d, w, h, flags); 1341 break; 1342 } 1343 1344 if (layer != 0) { 1345 layer->initStates(w, h, flags); 1346 layer->setName(name); 1347 ssize_t token = addClientLayer(client, layer); 1348 1349 surfaceHandle = layer->getSurface(); 1350 if (surfaceHandle != 0) { 1351 params->token = token; 1352 params->identity = layer->getIdentity(); 1353 if (normalLayer != 0) { 1354 Mutex::Autolock _l(mStateLock); 1355 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1356 } 1357 } 1358 1359 setTransactionFlags(eTransactionNeeded); 1360 } 1361 1362 return surfaceHandle; 1363} 1364 1365sp<Layer> SurfaceFlinger::createNormalSurface( 1366 const sp<Client>& client, DisplayID display, 1367 uint32_t w, uint32_t h, uint32_t flags, 1368 PixelFormat& format) 1369{ 1370 // initialize the surfaces 1371 switch (format) { // TODO: take h/w into account 1372 case PIXEL_FORMAT_TRANSPARENT: 1373 case PIXEL_FORMAT_TRANSLUCENT: 1374 format = PIXEL_FORMAT_RGBA_8888; 1375 break; 1376 case PIXEL_FORMAT_OPAQUE: 1377#ifdef NO_RGBX_8888 1378 format = PIXEL_FORMAT_RGB_565; 1379#else 1380 format = PIXEL_FORMAT_RGBX_8888; 1381#endif 1382 break; 1383 } 1384 1385#ifdef NO_RGBX_8888 1386 if (format == PIXEL_FORMAT_RGBX_8888) 1387 format = PIXEL_FORMAT_RGBA_8888; 1388#endif 1389 1390 sp<Layer> layer = new Layer(this, display, client); 1391 status_t err = layer->setBuffers(w, h, format, flags); 1392 if (LIKELY(err != NO_ERROR)) { 1393 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1394 layer.clear(); 1395 } 1396 return layer; 1397} 1398 1399sp<LayerDim> SurfaceFlinger::createDimSurface( 1400 const sp<Client>& client, DisplayID display, 1401 uint32_t w, uint32_t h, uint32_t flags) 1402{ 1403 sp<LayerDim> layer = new LayerDim(this, display, client); 1404 layer->initStates(w, h, flags); 1405 return layer; 1406} 1407 1408status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1409{ 1410 /* 1411 * called by the window manager, when a surface should be marked for 1412 * destruction. 1413 * 1414 * The surface is removed from the current and drawing lists, but placed 1415 * in the purgatory queue, so it's not destroyed right-away (we need 1416 * to wait for all client's references to go away first). 1417 */ 1418 1419 status_t err = NAME_NOT_FOUND; 1420 Mutex::Autolock _l(mStateLock); 1421 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1422 if (layer != 0) { 1423 err = purgatorizeLayer_l(layer); 1424 if (err == NO_ERROR) { 1425 setTransactionFlags(eTransactionNeeded); 1426 } 1427 } 1428 return err; 1429} 1430 1431status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1432{ 1433 // called by ~ISurface() when all references are gone 1434 status_t err = NO_ERROR; 1435 sp<LayerBaseClient> l(layer.promote()); 1436 if (l != NULL) { 1437 Mutex::Autolock _l(mStateLock); 1438 err = removeLayer_l(l); 1439 if (err == NAME_NOT_FOUND) { 1440 // The surface wasn't in the current list, which means it was 1441 // removed already, which means it is in the purgatory, 1442 // and need to be removed from there. 1443 ssize_t idx = mLayerPurgatory.remove(l); 1444 LOGE_IF(idx < 0, 1445 "layer=%p is not in the purgatory list", l.get()); 1446 } 1447 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1448 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1449 } 1450 return err; 1451} 1452 1453uint32_t SurfaceFlinger::setClientStateLocked( 1454 const sp<Client>& client, 1455 const layer_state_t& s) 1456{ 1457 uint32_t flags = 0; 1458 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1459 if (layer != 0) { 1460 const uint32_t what = s.what; 1461 if (what & ePositionChanged) { 1462 if (layer->setPosition(s.x, s.y)) 1463 flags |= eTraversalNeeded; 1464 } 1465 if (what & eLayerChanged) { 1466 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1467 if (layer->setLayer(s.z)) { 1468 mCurrentState.layersSortedByZ.removeAt(idx); 1469 mCurrentState.layersSortedByZ.add(layer); 1470 // we need traversal (state changed) 1471 // AND transaction (list changed) 1472 flags |= eTransactionNeeded|eTraversalNeeded; 1473 } 1474 } 1475 if (what & eSizeChanged) { 1476 if (layer->setSize(s.w, s.h)) { 1477 flags |= eTraversalNeeded; 1478 mResizeTransationPending = true; 1479 } 1480 } 1481 if (what & eAlphaChanged) { 1482 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1483 flags |= eTraversalNeeded; 1484 } 1485 if (what & eMatrixChanged) { 1486 if (layer->setMatrix(s.matrix)) 1487 flags |= eTraversalNeeded; 1488 } 1489 if (what & eTransparentRegionChanged) { 1490 if (layer->setTransparentRegionHint(s.transparentRegion)) 1491 flags |= eTraversalNeeded; 1492 } 1493 if (what & eVisibilityChanged) { 1494 if (layer->setFlags(s.flags, s.mask)) 1495 flags |= eTraversalNeeded; 1496 } 1497 } 1498 return flags; 1499} 1500 1501void SurfaceFlinger::screenReleased(int dpy) 1502{ 1503 // this may be called by a signal handler, we can't do too much in here 1504 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1505 signalEvent(); 1506} 1507 1508void SurfaceFlinger::screenAcquired(int dpy) 1509{ 1510 // this may be called by a signal handler, we can't do too much in here 1511 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1512 signalEvent(); 1513} 1514 1515status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1516{ 1517 const size_t SIZE = 4096; 1518 char buffer[SIZE]; 1519 String8 result; 1520 1521 if (!PermissionCache::checkCallingPermission(sDump)) { 1522 snprintf(buffer, SIZE, "Permission Denial: " 1523 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1524 IPCThreadState::self()->getCallingPid(), 1525 IPCThreadState::self()->getCallingUid()); 1526 result.append(buffer); 1527 } else { 1528 1529 // figure out if we're stuck somewhere 1530 const nsecs_t now = systemTime(); 1531 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1532 const nsecs_t inTransaction(mDebugInTransaction); 1533 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1534 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1535 1536 // Try to get the main lock, but don't insist if we can't 1537 // (this would indicate SF is stuck, but we want to be able to 1538 // print something in dumpsys). 1539 int retry = 3; 1540 while (mStateLock.tryLock()<0 && --retry>=0) { 1541 usleep(1000000); 1542 } 1543 const bool locked(retry >= 0); 1544 if (!locked) { 1545 snprintf(buffer, SIZE, 1546 "SurfaceFlinger appears to be unresponsive, " 1547 "dumping anyways (no locks held)\n"); 1548 result.append(buffer); 1549 } 1550 1551 /* 1552 * Dump the visible layer list 1553 */ 1554 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1555 const size_t count = currentLayers.size(); 1556 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1557 result.append(buffer); 1558 for (size_t i=0 ; i<count ; i++) { 1559 const sp<LayerBase>& layer(currentLayers[i]); 1560 layer->dump(result, buffer, SIZE); 1561 const Layer::State& s(layer->drawingState()); 1562 s.transparentRegion.dump(result, "transparentRegion"); 1563 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1564 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1565 } 1566 1567 /* 1568 * Dump the layers in the purgatory 1569 */ 1570 1571 const size_t purgatorySize = mLayerPurgatory.size(); 1572 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1573 result.append(buffer); 1574 for (size_t i=0 ; i<purgatorySize ; i++) { 1575 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1576 layer->shortDump(result, buffer, SIZE); 1577 } 1578 1579 /* 1580 * Dump SurfaceFlinger global state 1581 */ 1582 1583 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1584 result.append(buffer); 1585 1586 const GLExtensions& extensions(GLExtensions::getInstance()); 1587 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1588 extensions.getVendor(), 1589 extensions.getRenderer(), 1590 extensions.getVersion()); 1591 result.append(buffer); 1592 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1593 result.append(buffer); 1594 1595 mWormholeRegion.dump(result, "WormholeRegion"); 1596 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1597 snprintf(buffer, SIZE, 1598 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1599 mFreezeDisplay?"yes":"no", mFreezeCount, 1600 mCurrentState.orientation, hw.canDraw()); 1601 result.append(buffer); 1602 snprintf(buffer, SIZE, 1603 " last eglSwapBuffers() time: %f us\n" 1604 " last transaction time : %f us\n", 1605 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1606 result.append(buffer); 1607 1608 if (inSwapBuffersDuration || !locked) { 1609 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1610 inSwapBuffersDuration/1000.0); 1611 result.append(buffer); 1612 } 1613 1614 if (inTransactionDuration || !locked) { 1615 snprintf(buffer, SIZE, " transaction time: %f us\n", 1616 inTransactionDuration/1000.0); 1617 result.append(buffer); 1618 } 1619 1620 /* 1621 * Dump HWComposer state 1622 */ 1623 HWComposer& hwc(hw.getHwComposer()); 1624 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1625 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1626 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1627 result.append(buffer); 1628 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1629 1630 /* 1631 * Dump gralloc state 1632 */ 1633 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1634 alloc.dump(result); 1635 hw.dump(result); 1636 1637 if (locked) { 1638 mStateLock.unlock(); 1639 } 1640 } 1641 write(fd, result.string(), result.size()); 1642 return NO_ERROR; 1643} 1644 1645status_t SurfaceFlinger::onTransact( 1646 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1647{ 1648 switch (code) { 1649 case CREATE_CONNECTION: 1650 case SET_TRANSACTION_STATE: 1651 case SET_ORIENTATION: 1652 case FREEZE_DISPLAY: 1653 case UNFREEZE_DISPLAY: 1654 case BOOT_FINISHED: 1655 case TURN_ELECTRON_BEAM_OFF: 1656 case TURN_ELECTRON_BEAM_ON: 1657 { 1658 // codes that require permission check 1659 IPCThreadState* ipc = IPCThreadState::self(); 1660 const int pid = ipc->getCallingPid(); 1661 const int uid = ipc->getCallingUid(); 1662 if ((uid != AID_GRAPHICS) && 1663 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1664 LOGE("Permission Denial: " 1665 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1666 return PERMISSION_DENIED; 1667 } 1668 break; 1669 } 1670 case CAPTURE_SCREEN: 1671 { 1672 // codes that require permission check 1673 IPCThreadState* ipc = IPCThreadState::self(); 1674 const int pid = ipc->getCallingPid(); 1675 const int uid = ipc->getCallingUid(); 1676 if ((uid != AID_GRAPHICS) && 1677 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1678 LOGE("Permission Denial: " 1679 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1680 return PERMISSION_DENIED; 1681 } 1682 break; 1683 } 1684 } 1685 1686 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1687 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1688 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1689 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1690 IPCThreadState* ipc = IPCThreadState::self(); 1691 const int pid = ipc->getCallingPid(); 1692 const int uid = ipc->getCallingUid(); 1693 LOGE("Permission Denial: " 1694 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1695 return PERMISSION_DENIED; 1696 } 1697 int n; 1698 switch (code) { 1699 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1700 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1701 return NO_ERROR; 1702 case 1002: // SHOW_UPDATES 1703 n = data.readInt32(); 1704 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1705 invalidateHwcGeometry(); 1706 repaintEverything(); 1707 return NO_ERROR; 1708 case 1003: // SHOW_BACKGROUND 1709 n = data.readInt32(); 1710 mDebugBackground = n ? 1 : 0; 1711 return NO_ERROR; 1712 case 1004:{ // repaint everything 1713 repaintEverything(); 1714 return NO_ERROR; 1715 } 1716 case 1005:{ // force transaction 1717 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1718 return NO_ERROR; 1719 } 1720 case 1006:{ // enable/disable GraphicLog 1721 int enabled = data.readInt32(); 1722 GraphicLog::getInstance().setEnabled(enabled); 1723 return NO_ERROR; 1724 } 1725 case 1007: // set mFreezeCount 1726 mFreezeCount = data.readInt32(); 1727 mFreezeDisplayTime = 0; 1728 return NO_ERROR; 1729 case 1008: // toggle use of hw composer 1730 n = data.readInt32(); 1731 mDebugDisableHWC = n ? 1 : 0; 1732 invalidateHwcGeometry(); 1733 repaintEverything(); 1734 return NO_ERROR; 1735 case 1009: // toggle use of transform hint 1736 n = data.readInt32(); 1737 mDebugDisableTransformHint = n ? 1 : 0; 1738 invalidateHwcGeometry(); 1739 repaintEverything(); 1740 return NO_ERROR; 1741 case 1010: // interrogate. 1742 reply->writeInt32(0); 1743 reply->writeInt32(0); 1744 reply->writeInt32(mDebugRegion); 1745 reply->writeInt32(mDebugBackground); 1746 return NO_ERROR; 1747 case 1013: { 1748 Mutex::Autolock _l(mStateLock); 1749 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1750 reply->writeInt32(hw.getPageFlipCount()); 1751 } 1752 return NO_ERROR; 1753 } 1754 } 1755 return err; 1756} 1757 1758void SurfaceFlinger::repaintEverything() { 1759 Mutex::Autolock _l(mStateLock); 1760 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1761 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1762 signalEvent(); 1763} 1764 1765// --------------------------------------------------------------------------- 1766 1767status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1768 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1769{ 1770 if (!GLExtensions::getInstance().haveFramebufferObject()) 1771 return INVALID_OPERATION; 1772 1773 // get screen geometry 1774 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1775 const uint32_t hw_w = hw.getWidth(); 1776 const uint32_t hw_h = hw.getHeight(); 1777 GLfloat u = 1; 1778 GLfloat v = 1; 1779 1780 // make sure to clear all GL error flags 1781 while ( glGetError() != GL_NO_ERROR ) ; 1782 1783 // create a FBO 1784 GLuint name, tname; 1785 glGenTextures(1, &tname); 1786 glBindTexture(GL_TEXTURE_2D, tname); 1787 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1788 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1789 if (glGetError() != GL_NO_ERROR) { 1790 while ( glGetError() != GL_NO_ERROR ) ; 1791 GLint tw = (2 << (31 - clz(hw_w))); 1792 GLint th = (2 << (31 - clz(hw_h))); 1793 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1794 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1795 u = GLfloat(hw_w) / tw; 1796 v = GLfloat(hw_h) / th; 1797 } 1798 glGenFramebuffersOES(1, &name); 1799 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1800 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1801 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1802 1803 // redraw the screen entirely... 1804 glClearColor(0,0,0,1); 1805 glClear(GL_COLOR_BUFFER_BIT); 1806 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1807 const size_t count = layers.size(); 1808 for (size_t i=0 ; i<count ; ++i) { 1809 const sp<LayerBase>& layer(layers[i]); 1810 layer->drawForSreenShot(); 1811 } 1812 1813 // back to main framebuffer 1814 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1815 glDisable(GL_SCISSOR_TEST); 1816 glDeleteFramebuffersOES(1, &name); 1817 1818 *textureName = tname; 1819 *uOut = u; 1820 *vOut = v; 1821 return NO_ERROR; 1822} 1823 1824// --------------------------------------------------------------------------- 1825 1826status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1827{ 1828 status_t result = PERMISSION_DENIED; 1829 1830 if (!GLExtensions::getInstance().haveFramebufferObject()) 1831 return INVALID_OPERATION; 1832 1833 // get screen geometry 1834 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1835 const uint32_t hw_w = hw.getWidth(); 1836 const uint32_t hw_h = hw.getHeight(); 1837 const Region screenBounds(hw.bounds()); 1838 1839 GLfloat u, v; 1840 GLuint tname; 1841 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1842 if (result != NO_ERROR) { 1843 return result; 1844 } 1845 1846 GLfloat vtx[8]; 1847 const GLfloat texCoords[4][2] = { {0,1}, {0,1-v}, {u,1-v}, {u,1} }; 1848 glBindTexture(GL_TEXTURE_2D, tname); 1849 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1850 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1851 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1852 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1853 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1854 glVertexPointer(2, GL_FLOAT, 0, vtx); 1855 1856 /* 1857 * Texture coordinate mapping 1858 * 1859 * u 1860 * 1 +----------+---+ 1861 * | | | | image is inverted 1862 * | V | | w.r.t. the texture 1863 * 1-v +----------+ | coordinates 1864 * | | 1865 * | | 1866 * | | 1867 * 0 +--------------+ 1868 * 0 1 1869 * 1870 */ 1871 1872 class s_curve_interpolator { 1873 const float nbFrames, s, v; 1874 public: 1875 s_curve_interpolator(int nbFrames, float s) 1876 : nbFrames(1.0f / (nbFrames-1)), s(s), 1877 v(1.0f + expf(-s + 0.5f*s)) { 1878 } 1879 float operator()(int f) { 1880 const float x = f * nbFrames; 1881 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1882 } 1883 }; 1884 1885 class v_stretch { 1886 const GLfloat hw_w, hw_h; 1887 public: 1888 v_stretch(uint32_t hw_w, uint32_t hw_h) 1889 : hw_w(hw_w), hw_h(hw_h) { 1890 } 1891 void operator()(GLfloat* vtx, float v) { 1892 const GLfloat w = hw_w + (hw_w * v); 1893 const GLfloat h = hw_h - (hw_h * v); 1894 const GLfloat x = (hw_w - w) * 0.5f; 1895 const GLfloat y = (hw_h - h) * 0.5f; 1896 vtx[0] = x; vtx[1] = y; 1897 vtx[2] = x; vtx[3] = y + h; 1898 vtx[4] = x + w; vtx[5] = y + h; 1899 vtx[6] = x + w; vtx[7] = y; 1900 } 1901 }; 1902 1903 class h_stretch { 1904 const GLfloat hw_w, hw_h; 1905 public: 1906 h_stretch(uint32_t hw_w, uint32_t hw_h) 1907 : hw_w(hw_w), hw_h(hw_h) { 1908 } 1909 void operator()(GLfloat* vtx, float v) { 1910 const GLfloat w = hw_w - (hw_w * v); 1911 const GLfloat h = 1.0f; 1912 const GLfloat x = (hw_w - w) * 0.5f; 1913 const GLfloat y = (hw_h - h) * 0.5f; 1914 vtx[0] = x; vtx[1] = y; 1915 vtx[2] = x; vtx[3] = y + h; 1916 vtx[4] = x + w; vtx[5] = y + h; 1917 vtx[6] = x + w; vtx[7] = y; 1918 } 1919 }; 1920 1921 // the full animation is 24 frames 1922 char value[PROPERTY_VALUE_MAX]; 1923 property_get("debug.sf.electron_frames", value, "24"); 1924 int nbFrames = (atoi(value) + 1) >> 1; 1925 if (nbFrames <= 0) // just in case 1926 nbFrames = 24; 1927 1928 s_curve_interpolator itr(nbFrames, 7.5f); 1929 s_curve_interpolator itg(nbFrames, 8.0f); 1930 s_curve_interpolator itb(nbFrames, 8.5f); 1931 1932 v_stretch vverts(hw_w, hw_h); 1933 glEnable(GL_BLEND); 1934 glBlendFunc(GL_ONE, GL_ONE); 1935 for (int i=0 ; i<nbFrames ; i++) { 1936 float x, y, w, h; 1937 const float vr = itr(i); 1938 const float vg = itg(i); 1939 const float vb = itb(i); 1940 1941 // clear screen 1942 glColorMask(1,1,1,1); 1943 glClear(GL_COLOR_BUFFER_BIT); 1944 glEnable(GL_TEXTURE_2D); 1945 1946 // draw the red plane 1947 vverts(vtx, vr); 1948 glColorMask(1,0,0,1); 1949 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1950 1951 // draw the green plane 1952 vverts(vtx, vg); 1953 glColorMask(0,1,0,1); 1954 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1955 1956 // draw the blue plane 1957 vverts(vtx, vb); 1958 glColorMask(0,0,1,1); 1959 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1960 1961 // draw the white highlight (we use the last vertices) 1962 glDisable(GL_TEXTURE_2D); 1963 glColorMask(1,1,1,1); 1964 glColor4f(vg, vg, vg, 1); 1965 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1966 hw.flip(screenBounds); 1967 } 1968 1969 h_stretch hverts(hw_w, hw_h); 1970 glDisable(GL_BLEND); 1971 glDisable(GL_TEXTURE_2D); 1972 glColorMask(1,1,1,1); 1973 for (int i=0 ; i<nbFrames ; i++) { 1974 const float v = itg(i); 1975 hverts(vtx, v); 1976 glClear(GL_COLOR_BUFFER_BIT); 1977 glColor4f(1-v, 1-v, 1-v, 1); 1978 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1979 hw.flip(screenBounds); 1980 } 1981 1982 glColorMask(1,1,1,1); 1983 glEnable(GL_SCISSOR_TEST); 1984 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1985 glDeleteTextures(1, &tname); 1986 glDisable(GL_TEXTURE_2D); 1987 return NO_ERROR; 1988} 1989 1990status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1991{ 1992 status_t result = PERMISSION_DENIED; 1993 1994 if (!GLExtensions::getInstance().haveFramebufferObject()) 1995 return INVALID_OPERATION; 1996 1997 1998 // get screen geometry 1999 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2000 const uint32_t hw_w = hw.getWidth(); 2001 const uint32_t hw_h = hw.getHeight(); 2002 const Region screenBounds(hw.bounds()); 2003 2004 GLfloat u, v; 2005 GLuint tname; 2006 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2007 if (result != NO_ERROR) { 2008 return result; 2009 } 2010 2011 // back to main framebuffer 2012 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2013 glDisable(GL_SCISSOR_TEST); 2014 2015 GLfloat vtx[8]; 2016 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2017 glBindTexture(GL_TEXTURE_2D, tname); 2018 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2019 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2020 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2021 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2022 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2023 glVertexPointer(2, GL_FLOAT, 0, vtx); 2024 2025 class s_curve_interpolator { 2026 const float nbFrames, s, v; 2027 public: 2028 s_curve_interpolator(int nbFrames, float s) 2029 : nbFrames(1.0f / (nbFrames-1)), s(s), 2030 v(1.0f + expf(-s + 0.5f*s)) { 2031 } 2032 float operator()(int f) { 2033 const float x = f * nbFrames; 2034 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2035 } 2036 }; 2037 2038 class v_stretch { 2039 const GLfloat hw_w, hw_h; 2040 public: 2041 v_stretch(uint32_t hw_w, uint32_t hw_h) 2042 : hw_w(hw_w), hw_h(hw_h) { 2043 } 2044 void operator()(GLfloat* vtx, float v) { 2045 const GLfloat w = hw_w + (hw_w * v); 2046 const GLfloat h = hw_h - (hw_h * v); 2047 const GLfloat x = (hw_w - w) * 0.5f; 2048 const GLfloat y = (hw_h - h) * 0.5f; 2049 vtx[0] = x; vtx[1] = y; 2050 vtx[2] = x; vtx[3] = y + h; 2051 vtx[4] = x + w; vtx[5] = y + h; 2052 vtx[6] = x + w; vtx[7] = y; 2053 } 2054 }; 2055 2056 class h_stretch { 2057 const GLfloat hw_w, hw_h; 2058 public: 2059 h_stretch(uint32_t hw_w, uint32_t hw_h) 2060 : hw_w(hw_w), hw_h(hw_h) { 2061 } 2062 void operator()(GLfloat* vtx, float v) { 2063 const GLfloat w = hw_w - (hw_w * v); 2064 const GLfloat h = 1.0f; 2065 const GLfloat x = (hw_w - w) * 0.5f; 2066 const GLfloat y = (hw_h - h) * 0.5f; 2067 vtx[0] = x; vtx[1] = y; 2068 vtx[2] = x; vtx[3] = y + h; 2069 vtx[4] = x + w; vtx[5] = y + h; 2070 vtx[6] = x + w; vtx[7] = y; 2071 } 2072 }; 2073 2074 // the full animation is 12 frames 2075 int nbFrames = 8; 2076 s_curve_interpolator itr(nbFrames, 7.5f); 2077 s_curve_interpolator itg(nbFrames, 8.0f); 2078 s_curve_interpolator itb(nbFrames, 8.5f); 2079 2080 h_stretch hverts(hw_w, hw_h); 2081 glDisable(GL_BLEND); 2082 glDisable(GL_TEXTURE_2D); 2083 glColorMask(1,1,1,1); 2084 for (int i=nbFrames-1 ; i>=0 ; i--) { 2085 const float v = itg(i); 2086 hverts(vtx, v); 2087 glClear(GL_COLOR_BUFFER_BIT); 2088 glColor4f(1-v, 1-v, 1-v, 1); 2089 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2090 hw.flip(screenBounds); 2091 } 2092 2093 nbFrames = 4; 2094 v_stretch vverts(hw_w, hw_h); 2095 glEnable(GL_BLEND); 2096 glBlendFunc(GL_ONE, GL_ONE); 2097 for (int i=nbFrames-1 ; i>=0 ; i--) { 2098 float x, y, w, h; 2099 const float vr = itr(i); 2100 const float vg = itg(i); 2101 const float vb = itb(i); 2102 2103 // clear screen 2104 glColorMask(1,1,1,1); 2105 glClear(GL_COLOR_BUFFER_BIT); 2106 glEnable(GL_TEXTURE_2D); 2107 2108 // draw the red plane 2109 vverts(vtx, vr); 2110 glColorMask(1,0,0,1); 2111 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2112 2113 // draw the green plane 2114 vverts(vtx, vg); 2115 glColorMask(0,1,0,1); 2116 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2117 2118 // draw the blue plane 2119 vverts(vtx, vb); 2120 glColorMask(0,0,1,1); 2121 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2122 2123 hw.flip(screenBounds); 2124 } 2125 2126 glColorMask(1,1,1,1); 2127 glEnable(GL_SCISSOR_TEST); 2128 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2129 glDeleteTextures(1, &tname); 2130 glDisable(GL_TEXTURE_2D); 2131 2132 return NO_ERROR; 2133} 2134 2135// --------------------------------------------------------------------------- 2136 2137status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2138{ 2139 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2140 if (!hw.canDraw()) { 2141 // we're already off 2142 return NO_ERROR; 2143 } 2144 2145 // turn off hwc while we're doing the animation 2146 hw.getHwComposer().disable(); 2147 // and make sure to turn it back on (if needed) next time we compose 2148 invalidateHwcGeometry(); 2149 2150 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2151 electronBeamOffAnimationImplLocked(); 2152 } 2153 2154 // always clear the whole screen at the end of the animation 2155 glClearColor(0,0,0,1); 2156 glDisable(GL_SCISSOR_TEST); 2157 glClear(GL_COLOR_BUFFER_BIT); 2158 glEnable(GL_SCISSOR_TEST); 2159 hw.flip( Region(hw.bounds()) ); 2160 2161 hw.setCanDraw(false); 2162 return NO_ERROR; 2163} 2164 2165status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2166{ 2167 class MessageTurnElectronBeamOff : public MessageBase { 2168 SurfaceFlinger* flinger; 2169 int32_t mode; 2170 status_t result; 2171 public: 2172 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2173 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2174 } 2175 status_t getResult() const { 2176 return result; 2177 } 2178 virtual bool handler() { 2179 Mutex::Autolock _l(flinger->mStateLock); 2180 result = flinger->turnElectronBeamOffImplLocked(mode); 2181 return true; 2182 } 2183 }; 2184 2185 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2186 status_t res = postMessageSync(msg); 2187 if (res == NO_ERROR) { 2188 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2189 2190 // work-around: when the power-manager calls us we activate the 2191 // animation. eventually, the "on" animation will be called 2192 // by the power-manager itself 2193 mElectronBeamAnimationMode = mode; 2194 } 2195 return res; 2196} 2197 2198// --------------------------------------------------------------------------- 2199 2200status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2201{ 2202 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2203 if (hw.canDraw()) { 2204 // we're already on 2205 return NO_ERROR; 2206 } 2207 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2208 electronBeamOnAnimationImplLocked(); 2209 } 2210 hw.setCanDraw(true); 2211 2212 // make sure to redraw the whole screen when the animation is done 2213 mDirtyRegion.set(hw.bounds()); 2214 signalEvent(); 2215 2216 return NO_ERROR; 2217} 2218 2219status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2220{ 2221 class MessageTurnElectronBeamOn : public MessageBase { 2222 SurfaceFlinger* flinger; 2223 int32_t mode; 2224 status_t result; 2225 public: 2226 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2227 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2228 } 2229 status_t getResult() const { 2230 return result; 2231 } 2232 virtual bool handler() { 2233 Mutex::Autolock _l(flinger->mStateLock); 2234 result = flinger->turnElectronBeamOnImplLocked(mode); 2235 return true; 2236 } 2237 }; 2238 2239 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2240 return NO_ERROR; 2241} 2242 2243// --------------------------------------------------------------------------- 2244 2245status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2246 sp<IMemoryHeap>* heap, 2247 uint32_t* w, uint32_t* h, PixelFormat* f, 2248 uint32_t sw, uint32_t sh, 2249 uint32_t minLayerZ, uint32_t maxLayerZ) 2250{ 2251 status_t result = PERMISSION_DENIED; 2252 2253 // only one display supported for now 2254 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2255 return BAD_VALUE; 2256 2257 // make sure none of the layers are protected 2258 const LayerVector& layers(mDrawingState.layersSortedByZ); 2259 const size_t count = layers.size(); 2260 for (size_t i=0 ; i<count ; ++i) { 2261 const sp<LayerBase>& layer(layers[i]); 2262 const uint32_t flags = layer->drawingState().flags; 2263 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2264 const uint32_t z = layer->drawingState().z; 2265 if (z >= minLayerZ && z <= maxLayerZ) { 2266 if (layer->isProtected()) { 2267 return INVALID_OPERATION; 2268 } 2269 } 2270 } 2271 } 2272 2273 if (!GLExtensions::getInstance().haveFramebufferObject()) 2274 return INVALID_OPERATION; 2275 2276 // get screen geometry 2277 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2278 const uint32_t hw_w = hw.getWidth(); 2279 const uint32_t hw_h = hw.getHeight(); 2280 2281 if ((sw > hw_w) || (sh > hw_h)) 2282 return BAD_VALUE; 2283 2284 sw = (!sw) ? hw_w : sw; 2285 sh = (!sh) ? hw_h : sh; 2286 const size_t size = sw * sh * 4; 2287 2288 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2289 // sw, sh, minLayerZ, maxLayerZ); 2290 2291 // make sure to clear all GL error flags 2292 while ( glGetError() != GL_NO_ERROR ) ; 2293 2294 // create a FBO 2295 GLuint name, tname; 2296 glGenRenderbuffersOES(1, &tname); 2297 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2298 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2299 glGenFramebuffersOES(1, &name); 2300 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2301 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2302 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2303 2304 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2305 2306 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2307 2308 // invert everything, b/c glReadPixel() below will invert the FB 2309 glViewport(0, 0, sw, sh); 2310 glScissor(0, 0, sw, sh); 2311 glEnable(GL_SCISSOR_TEST); 2312 glMatrixMode(GL_PROJECTION); 2313 glPushMatrix(); 2314 glLoadIdentity(); 2315 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2316 glMatrixMode(GL_MODELVIEW); 2317 2318 // redraw the screen entirely... 2319 glClearColor(0,0,0,1); 2320 glClear(GL_COLOR_BUFFER_BIT); 2321 2322 for (size_t i=0 ; i<count ; ++i) { 2323 const sp<LayerBase>& layer(layers[i]); 2324 const uint32_t flags = layer->drawingState().flags; 2325 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2326 const uint32_t z = layer->drawingState().z; 2327 if (z >= minLayerZ && z <= maxLayerZ) { 2328 layer->drawForSreenShot(); 2329 } 2330 } 2331 } 2332 2333 // XXX: this is needed on tegra 2334 glEnable(GL_SCISSOR_TEST); 2335 glScissor(0, 0, sw, sh); 2336 2337 // check for errors and return screen capture 2338 if (glGetError() != GL_NO_ERROR) { 2339 // error while rendering 2340 result = INVALID_OPERATION; 2341 } else { 2342 // allocate shared memory large enough to hold the 2343 // screen capture 2344 sp<MemoryHeapBase> base( 2345 new MemoryHeapBase(size, 0, "screen-capture") ); 2346 void* const ptr = base->getBase(); 2347 if (ptr) { 2348 // capture the screen with glReadPixels() 2349 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2350 if (glGetError() == GL_NO_ERROR) { 2351 *heap = base; 2352 *w = sw; 2353 *h = sh; 2354 *f = PIXEL_FORMAT_RGBA_8888; 2355 result = NO_ERROR; 2356 } 2357 } else { 2358 result = NO_MEMORY; 2359 } 2360 } 2361 glEnable(GL_SCISSOR_TEST); 2362 glViewport(0, 0, hw_w, hw_h); 2363 glMatrixMode(GL_PROJECTION); 2364 glPopMatrix(); 2365 glMatrixMode(GL_MODELVIEW); 2366 } else { 2367 result = BAD_VALUE; 2368 } 2369 2370 // release FBO resources 2371 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2372 glDeleteRenderbuffersOES(1, &tname); 2373 glDeleteFramebuffersOES(1, &name); 2374 2375 hw.compositionComplete(); 2376 2377 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2378 2379 return result; 2380} 2381 2382 2383status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2384 sp<IMemoryHeap>* heap, 2385 uint32_t* width, uint32_t* height, PixelFormat* format, 2386 uint32_t sw, uint32_t sh, 2387 uint32_t minLayerZ, uint32_t maxLayerZ) 2388{ 2389 // only one display supported for now 2390 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2391 return BAD_VALUE; 2392 2393 if (!GLExtensions::getInstance().haveFramebufferObject()) 2394 return INVALID_OPERATION; 2395 2396 class MessageCaptureScreen : public MessageBase { 2397 SurfaceFlinger* flinger; 2398 DisplayID dpy; 2399 sp<IMemoryHeap>* heap; 2400 uint32_t* w; 2401 uint32_t* h; 2402 PixelFormat* f; 2403 uint32_t sw; 2404 uint32_t sh; 2405 uint32_t minLayerZ; 2406 uint32_t maxLayerZ; 2407 status_t result; 2408 public: 2409 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2410 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2411 uint32_t sw, uint32_t sh, 2412 uint32_t minLayerZ, uint32_t maxLayerZ) 2413 : flinger(flinger), dpy(dpy), 2414 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2415 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2416 result(PERMISSION_DENIED) 2417 { 2418 } 2419 status_t getResult() const { 2420 return result; 2421 } 2422 virtual bool handler() { 2423 Mutex::Autolock _l(flinger->mStateLock); 2424 2425 // if we have secure windows, never allow the screen capture 2426 if (flinger->mSecureFrameBuffer) 2427 return true; 2428 2429 result = flinger->captureScreenImplLocked(dpy, 2430 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2431 2432 return true; 2433 } 2434 }; 2435 2436 sp<MessageBase> msg = new MessageCaptureScreen(this, 2437 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2438 status_t res = postMessageSync(msg); 2439 if (res == NO_ERROR) { 2440 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2441 } 2442 return res; 2443} 2444 2445// --------------------------------------------------------------------------- 2446 2447sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2448{ 2449 sp<Layer> result; 2450 Mutex::Autolock _l(mStateLock); 2451 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2452 return result; 2453} 2454 2455// --------------------------------------------------------------------------- 2456 2457Client::Client(const sp<SurfaceFlinger>& flinger) 2458 : mFlinger(flinger), mNameGenerator(1) 2459{ 2460} 2461 2462Client::~Client() 2463{ 2464 const size_t count = mLayers.size(); 2465 for (size_t i=0 ; i<count ; i++) { 2466 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2467 if (layer != 0) { 2468 mFlinger->removeLayer(layer); 2469 } 2470 } 2471} 2472 2473status_t Client::initCheck() const { 2474 return NO_ERROR; 2475} 2476 2477size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2478{ 2479 Mutex::Autolock _l(mLock); 2480 size_t name = mNameGenerator++; 2481 mLayers.add(name, layer); 2482 return name; 2483} 2484 2485void Client::detachLayer(const LayerBaseClient* layer) 2486{ 2487 Mutex::Autolock _l(mLock); 2488 // we do a linear search here, because this doesn't happen often 2489 const size_t count = mLayers.size(); 2490 for (size_t i=0 ; i<count ; i++) { 2491 if (mLayers.valueAt(i) == layer) { 2492 mLayers.removeItemsAt(i, 1); 2493 break; 2494 } 2495 } 2496} 2497sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2498{ 2499 Mutex::Autolock _l(mLock); 2500 sp<LayerBaseClient> lbc; 2501 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2502 if (layer != 0) { 2503 lbc = layer.promote(); 2504 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2505 } 2506 return lbc; 2507} 2508 2509 2510status_t Client::onTransact( 2511 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2512{ 2513 // these must be checked 2514 IPCThreadState* ipc = IPCThreadState::self(); 2515 const int pid = ipc->getCallingPid(); 2516 const int uid = ipc->getCallingUid(); 2517 const int self_pid = getpid(); 2518 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2519 // we're called from a different process, do the real check 2520 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2521 { 2522 LOGE("Permission Denial: " 2523 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2524 return PERMISSION_DENIED; 2525 } 2526 } 2527 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2528} 2529 2530 2531sp<ISurface> Client::createSurface( 2532 ISurfaceComposerClient::surface_data_t* params, 2533 const String8& name, 2534 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2535 uint32_t flags) 2536{ 2537 /* 2538 * createSurface must be called from the GL thread so that it can 2539 * have access to the GL context. 2540 */ 2541 2542 class MessageCreateSurface : public MessageBase { 2543 sp<ISurface> result; 2544 SurfaceFlinger* flinger; 2545 ISurfaceComposerClient::surface_data_t* params; 2546 Client* client; 2547 const String8& name; 2548 DisplayID display; 2549 uint32_t w, h; 2550 PixelFormat format; 2551 uint32_t flags; 2552 public: 2553 MessageCreateSurface(SurfaceFlinger* flinger, 2554 ISurfaceComposerClient::surface_data_t* params, 2555 const String8& name, Client* client, 2556 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2557 uint32_t flags) 2558 : flinger(flinger), params(params), client(client), name(name), 2559 display(display), w(w), h(h), format(format), flags(flags) 2560 { 2561 } 2562 sp<ISurface> getResult() const { return result; } 2563 virtual bool handler() { 2564 result = flinger->createSurface(params, name, client, 2565 display, w, h, format, flags); 2566 return true; 2567 } 2568 }; 2569 2570 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2571 params, name, this, display, w, h, format, flags); 2572 mFlinger->postMessageSync(msg); 2573 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2574} 2575status_t Client::destroySurface(SurfaceID sid) { 2576 return mFlinger->removeSurface(this, sid); 2577} 2578 2579// --------------------------------------------------------------------------- 2580 2581GraphicBufferAlloc::GraphicBufferAlloc() {} 2582 2583GraphicBufferAlloc::~GraphicBufferAlloc() {} 2584 2585sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2586 PixelFormat format, uint32_t usage, status_t* error) { 2587 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2588 status_t err = graphicBuffer->initCheck(); 2589 *error = err; 2590 if (err != 0 || graphicBuffer->handle == 0) { 2591 if (err == NO_MEMORY) { 2592 GraphicBuffer::dumpAllocationsToSystemLog(); 2593 } 2594 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2595 "failed (%s), handle=%p", 2596 w, h, strerror(-err), graphicBuffer->handle); 2597 return 0; 2598 } 2599 return graphicBuffer; 2600} 2601 2602// --------------------------------------------------------------------------- 2603 2604GraphicPlane::GraphicPlane() 2605 : mHw(0) 2606{ 2607} 2608 2609GraphicPlane::~GraphicPlane() { 2610 delete mHw; 2611} 2612 2613bool GraphicPlane::initialized() const { 2614 return mHw ? true : false; 2615} 2616 2617int GraphicPlane::getWidth() const { 2618 return mWidth; 2619} 2620 2621int GraphicPlane::getHeight() const { 2622 return mHeight; 2623} 2624 2625void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2626{ 2627 mHw = hw; 2628 2629 // initialize the display orientation transform. 2630 // it's a constant that should come from the display driver. 2631 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2632 char property[PROPERTY_VALUE_MAX]; 2633 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2634 //displayOrientation 2635 switch (atoi(property)) { 2636 case 90: 2637 displayOrientation = ISurfaceComposer::eOrientation90; 2638 break; 2639 case 270: 2640 displayOrientation = ISurfaceComposer::eOrientation270; 2641 break; 2642 } 2643 } 2644 2645 const float w = hw->getWidth(); 2646 const float h = hw->getHeight(); 2647 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2648 &mDisplayTransform); 2649 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2650 mDisplayWidth = h; 2651 mDisplayHeight = w; 2652 } else { 2653 mDisplayWidth = w; 2654 mDisplayHeight = h; 2655 } 2656 2657 setOrientation(ISurfaceComposer::eOrientationDefault); 2658} 2659 2660status_t GraphicPlane::orientationToTransfrom( 2661 int orientation, int w, int h, Transform* tr) 2662{ 2663 uint32_t flags = 0; 2664 switch (orientation) { 2665 case ISurfaceComposer::eOrientationDefault: 2666 flags = Transform::ROT_0; 2667 break; 2668 case ISurfaceComposer::eOrientation90: 2669 flags = Transform::ROT_90; 2670 break; 2671 case ISurfaceComposer::eOrientation180: 2672 flags = Transform::ROT_180; 2673 break; 2674 case ISurfaceComposer::eOrientation270: 2675 flags = Transform::ROT_270; 2676 break; 2677 default: 2678 return BAD_VALUE; 2679 } 2680 tr->set(flags, w, h); 2681 return NO_ERROR; 2682} 2683 2684status_t GraphicPlane::setOrientation(int orientation) 2685{ 2686 // If the rotation can be handled in hardware, this is where 2687 // the magic should happen. 2688 2689 const DisplayHardware& hw(displayHardware()); 2690 const float w = mDisplayWidth; 2691 const float h = mDisplayHeight; 2692 mWidth = int(w); 2693 mHeight = int(h); 2694 2695 Transform orientationTransform; 2696 GraphicPlane::orientationToTransfrom(orientation, w, h, 2697 &orientationTransform); 2698 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2699 mWidth = int(h); 2700 mHeight = int(w); 2701 } 2702 2703 mOrientation = orientation; 2704 mGlobalTransform = mDisplayTransform * orientationTransform; 2705 return NO_ERROR; 2706} 2707 2708const DisplayHardware& GraphicPlane::displayHardware() const { 2709 return *mHw; 2710} 2711 2712DisplayHardware& GraphicPlane::editDisplayHardware() { 2713 return *mHw; 2714} 2715 2716const Transform& GraphicPlane::transform() const { 2717 return mGlobalTransform; 2718} 2719 2720EGLDisplay GraphicPlane::getEGLDisplay() const { 2721 return mHw->getEGLDisplay(); 2722} 2723 2724// --------------------------------------------------------------------------- 2725 2726}; // namespace android 2727