SurfaceFlinger.cpp revision 059fd18396605592ec538b9e5574a80a8987d10d
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 // Currently unused: const uint32_t flags = mCurrentState.orientationFlags; 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 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 990 HWComposer& hwc(hw.getHwComposer()); 991 992 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 993 if (UNLIKELY(fbLayerCount && !mWormholeRegion.isEmpty())) { 994 // should never happen unless the window manager has a bug 995 // draw something... 996 drawWormhole(); 997 } 998 999 /* 1000 * and then, render the layers targeted at the framebuffer 1001 */ 1002 hwc_layer_t* const cur(hwc.getLayers()); 1003 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1004 size_t count = layers.size(); 1005 for (size_t i=0 ; i<count ; i++) { 1006 if (cur && (cur[i].compositionType != HWC_FRAMEBUFFER)) { 1007 continue; 1008 } 1009 const sp<LayerBase>& layer(layers[i]); 1010 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 1011 if (!clip.isEmpty()) { 1012 layer->draw(clip); 1013 } 1014 } 1015} 1016 1017void SurfaceFlinger::debugFlashRegions() 1018{ 1019 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1020 const uint32_t flags = hw.getFlags(); 1021 const int32_t height = hw.getHeight(); 1022 if (mSwapRegion.isEmpty()) { 1023 return; 1024 } 1025 1026 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 1027 (flags & DisplayHardware::BUFFER_PRESERVED))) { 1028 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 1029 mDirtyRegion.bounds() : hw.bounds()); 1030 composeSurfaces(repaint); 1031 } 1032 1033 glDisable(GL_BLEND); 1034 glDisable(GL_DITHER); 1035 glDisable(GL_SCISSOR_TEST); 1036 1037 static int toggle = 0; 1038 toggle = 1 - toggle; 1039 if (toggle) { 1040 glColor4f(1, 0, 1, 1); 1041 } else { 1042 glColor4f(1, 1, 0, 1); 1043 } 1044 1045 Region::const_iterator it = mDirtyRegion.begin(); 1046 Region::const_iterator const end = mDirtyRegion.end(); 1047 while (it != end) { 1048 const Rect& r = *it++; 1049 GLfloat vertices[][2] = { 1050 { r.left, height - r.top }, 1051 { r.left, height - r.bottom }, 1052 { r.right, height - r.bottom }, 1053 { r.right, height - r.top } 1054 }; 1055 glVertexPointer(2, GL_FLOAT, 0, vertices); 1056 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1057 } 1058 1059 hw.flip(mSwapRegion); 1060 1061 if (mDebugRegion > 1) 1062 usleep(mDebugRegion * 1000); 1063 1064 glEnable(GL_SCISSOR_TEST); 1065} 1066 1067void SurfaceFlinger::drawWormhole() const 1068{ 1069 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1070 if (region.isEmpty()) 1071 return; 1072 1073 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1074 const int32_t width = hw.getWidth(); 1075 const int32_t height = hw.getHeight(); 1076 1077 glDisable(GL_BLEND); 1078 glDisable(GL_DITHER); 1079 1080 if (LIKELY(!mDebugBackground)) { 1081 glClearColor(0,0,0,0); 1082 Region::const_iterator it = region.begin(); 1083 Region::const_iterator const end = region.end(); 1084 while (it != end) { 1085 const Rect& r = *it++; 1086 const GLint sy = height - (r.top + r.height()); 1087 glScissor(r.left, sy, r.width(), r.height()); 1088 glClear(GL_COLOR_BUFFER_BIT); 1089 } 1090 } else { 1091 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1092 { width, height }, { 0, height } }; 1093 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1094 glVertexPointer(2, GL_SHORT, 0, vertices); 1095 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1096 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1097#if defined(GL_OES_EGL_image_external) 1098 if (GLExtensions::getInstance().haveTextureExternal()) { 1099 glDisable(GL_TEXTURE_EXTERNAL_OES); 1100 } 1101#endif 1102 glEnable(GL_TEXTURE_2D); 1103 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1104 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1105 glMatrixMode(GL_TEXTURE); 1106 glLoadIdentity(); 1107 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1108 Region::const_iterator it = region.begin(); 1109 Region::const_iterator const end = region.end(); 1110 while (it != end) { 1111 const Rect& r = *it++; 1112 const GLint sy = height - (r.top + r.height()); 1113 glScissor(r.left, sy, r.width(), r.height()); 1114 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1115 } 1116 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1117 glDisable(GL_TEXTURE_2D); 1118 glLoadIdentity(); 1119 glMatrixMode(GL_MODELVIEW); 1120 } 1121} 1122 1123void SurfaceFlinger::debugShowFPS() const 1124{ 1125 static int mFrameCount; 1126 static int mLastFrameCount = 0; 1127 static nsecs_t mLastFpsTime = 0; 1128 static float mFps = 0; 1129 mFrameCount++; 1130 nsecs_t now = systemTime(); 1131 nsecs_t diff = now - mLastFpsTime; 1132 if (diff > ms2ns(250)) { 1133 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1134 mLastFpsTime = now; 1135 mLastFrameCount = mFrameCount; 1136 } 1137 // XXX: mFPS has the value we want 1138 } 1139 1140status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1141{ 1142 Mutex::Autolock _l(mStateLock); 1143 addLayer_l(layer); 1144 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1145 return NO_ERROR; 1146} 1147 1148status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1149{ 1150 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1151 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1152} 1153 1154ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1155 const sp<LayerBaseClient>& lbc) 1156{ 1157 // attach this layer to the client 1158 size_t name = client->attachLayer(lbc); 1159 1160 Mutex::Autolock _l(mStateLock); 1161 1162 // add this layer to the current state list 1163 addLayer_l(lbc); 1164 1165 return ssize_t(name); 1166} 1167 1168status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1169{ 1170 Mutex::Autolock _l(mStateLock); 1171 status_t err = purgatorizeLayer_l(layer); 1172 if (err == NO_ERROR) 1173 setTransactionFlags(eTransactionNeeded); 1174 return err; 1175} 1176 1177status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1178{ 1179 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1180 if (lbc != 0) { 1181 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1182 } 1183 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1184 if (index >= 0) { 1185 mLayersRemoved = true; 1186 return NO_ERROR; 1187 } 1188 return status_t(index); 1189} 1190 1191status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1192{ 1193 // First add the layer to the purgatory list, which makes sure it won't 1194 // go away, then remove it from the main list (through a transaction). 1195 ssize_t err = removeLayer_l(layerBase); 1196 if (err >= 0) { 1197 mLayerPurgatory.add(layerBase); 1198 } 1199 1200 layerBase->onRemoved(); 1201 1202 // it's possible that we don't find a layer, because it might 1203 // have been destroyed already -- this is not technically an error 1204 // from the user because there is a race between Client::destroySurface(), 1205 // ~Client() and ~ISurface(). 1206 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1207} 1208 1209status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1210{ 1211 layer->forceVisibilityTransaction(); 1212 setTransactionFlags(eTraversalNeeded); 1213 return NO_ERROR; 1214} 1215 1216uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1217{ 1218 return android_atomic_release_load(&mTransactionFlags); 1219} 1220 1221uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1222{ 1223 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1224} 1225 1226uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1227{ 1228 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1229 if ((old & flags)==0) { // wake the server up 1230 signalEvent(); 1231 } 1232 return old; 1233} 1234 1235 1236void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state) { 1237 Mutex::Autolock _l(mStateLock); 1238 1239 uint32_t flags = 0; 1240 const size_t count = state.size(); 1241 for (size_t i=0 ; i<count ; i++) { 1242 const ComposerState& s(state[i]); 1243 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1244 flags |= setClientStateLocked(client, s.state); 1245 } 1246 if (flags) { 1247 setTransactionFlags(flags); 1248 } 1249 1250 signalEvent(); 1251 1252 // if there is a transaction with a resize, wait for it to 1253 // take effect before returning. 1254 while (mResizeTransationPending) { 1255 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1256 if (CC_UNLIKELY(err != NO_ERROR)) { 1257 // just in case something goes wrong in SF, return to the 1258 // called after a few seconds. 1259 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1260 mResizeTransationPending = false; 1261 break; 1262 } 1263 } 1264} 1265 1266status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1267{ 1268 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1269 return BAD_VALUE; 1270 1271 Mutex::Autolock _l(mStateLock); 1272 mCurrentState.freezeDisplay = 1; 1273 setTransactionFlags(eTransactionNeeded); 1274 1275 // flags is intended to communicate some sort of animation behavior 1276 // (for instance fading) 1277 return NO_ERROR; 1278} 1279 1280status_t SurfaceFlinger::unfreezeDisplay(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 = 0; 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 1294int SurfaceFlinger::setOrientation(DisplayID dpy, 1295 int orientation, uint32_t flags) 1296{ 1297 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1298 return BAD_VALUE; 1299 1300 Mutex::Autolock _l(mStateLock); 1301 if (mCurrentState.orientation != orientation) { 1302 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1303 mCurrentState.orientationFlags = flags; 1304 mCurrentState.orientation = orientation; 1305 setTransactionFlags(eTransactionNeeded); 1306 mTransactionCV.wait(mStateLock); 1307 } else { 1308 orientation = BAD_VALUE; 1309 } 1310 } 1311 return orientation; 1312} 1313 1314sp<ISurface> SurfaceFlinger::createSurface( 1315 ISurfaceComposerClient::surface_data_t* params, 1316 const String8& name, 1317 const sp<Client>& client, 1318 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1319 uint32_t flags) 1320{ 1321 sp<LayerBaseClient> layer; 1322 sp<ISurface> surfaceHandle; 1323 1324 if (int32_t(w|h) < 0) { 1325 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1326 int(w), int(h)); 1327 return surfaceHandle; 1328 } 1329 1330 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1331 sp<Layer> normalLayer; 1332 switch (flags & eFXSurfaceMask) { 1333 case eFXSurfaceNormal: 1334 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1335 layer = normalLayer; 1336 break; 1337 case eFXSurfaceBlur: 1338 // for now we treat Blur as Dim, until we can implement it 1339 // efficiently. 1340 case eFXSurfaceDim: 1341 layer = createDimSurface(client, d, w, h, flags); 1342 break; 1343 } 1344 1345 if (layer != 0) { 1346 layer->initStates(w, h, flags); 1347 layer->setName(name); 1348 ssize_t token = addClientLayer(client, layer); 1349 1350 surfaceHandle = layer->getSurface(); 1351 if (surfaceHandle != 0) { 1352 params->token = token; 1353 params->identity = layer->getIdentity(); 1354 if (normalLayer != 0) { 1355 Mutex::Autolock _l(mStateLock); 1356 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1357 } 1358 } 1359 1360 setTransactionFlags(eTransactionNeeded); 1361 } 1362 1363 return surfaceHandle; 1364} 1365 1366sp<Layer> SurfaceFlinger::createNormalSurface( 1367 const sp<Client>& client, DisplayID display, 1368 uint32_t w, uint32_t h, uint32_t flags, 1369 PixelFormat& format) 1370{ 1371 // initialize the surfaces 1372 switch (format) { // TODO: take h/w into account 1373 case PIXEL_FORMAT_TRANSPARENT: 1374 case PIXEL_FORMAT_TRANSLUCENT: 1375 format = PIXEL_FORMAT_RGBA_8888; 1376 break; 1377 case PIXEL_FORMAT_OPAQUE: 1378#ifdef NO_RGBX_8888 1379 format = PIXEL_FORMAT_RGB_565; 1380#else 1381 format = PIXEL_FORMAT_RGBX_8888; 1382#endif 1383 break; 1384 } 1385 1386#ifdef NO_RGBX_8888 1387 if (format == PIXEL_FORMAT_RGBX_8888) 1388 format = PIXEL_FORMAT_RGBA_8888; 1389#endif 1390 1391 sp<Layer> layer = new Layer(this, display, client); 1392 status_t err = layer->setBuffers(w, h, format, flags); 1393 if (LIKELY(err != NO_ERROR)) { 1394 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1395 layer.clear(); 1396 } 1397 return layer; 1398} 1399 1400sp<LayerDim> SurfaceFlinger::createDimSurface( 1401 const sp<Client>& client, DisplayID display, 1402 uint32_t w, uint32_t h, uint32_t flags) 1403{ 1404 sp<LayerDim> layer = new LayerDim(this, display, client); 1405 layer->initStates(w, h, flags); 1406 return layer; 1407} 1408 1409status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1410{ 1411 /* 1412 * called by the window manager, when a surface should be marked for 1413 * destruction. 1414 * 1415 * The surface is removed from the current and drawing lists, but placed 1416 * in the purgatory queue, so it's not destroyed right-away (we need 1417 * to wait for all client's references to go away first). 1418 */ 1419 1420 status_t err = NAME_NOT_FOUND; 1421 Mutex::Autolock _l(mStateLock); 1422 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1423 if (layer != 0) { 1424 err = purgatorizeLayer_l(layer); 1425 if (err == NO_ERROR) { 1426 setTransactionFlags(eTransactionNeeded); 1427 } 1428 } 1429 return err; 1430} 1431 1432status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1433{ 1434 // called by ~ISurface() when all references are gone 1435 status_t err = NO_ERROR; 1436 sp<LayerBaseClient> l(layer.promote()); 1437 if (l != NULL) { 1438 Mutex::Autolock _l(mStateLock); 1439 err = removeLayer_l(l); 1440 if (err == NAME_NOT_FOUND) { 1441 // The surface wasn't in the current list, which means it was 1442 // removed already, which means it is in the purgatory, 1443 // and need to be removed from there. 1444 ssize_t idx = mLayerPurgatory.remove(l); 1445 LOGE_IF(idx < 0, 1446 "layer=%p is not in the purgatory list", l.get()); 1447 } 1448 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1449 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1450 } 1451 return err; 1452} 1453 1454uint32_t SurfaceFlinger::setClientStateLocked( 1455 const sp<Client>& client, 1456 const layer_state_t& s) 1457{ 1458 uint32_t flags = 0; 1459 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1460 if (layer != 0) { 1461 const uint32_t what = s.what; 1462 if (what & ePositionChanged) { 1463 if (layer->setPosition(s.x, s.y)) 1464 flags |= eTraversalNeeded; 1465 } 1466 if (what & eLayerChanged) { 1467 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1468 if (layer->setLayer(s.z)) { 1469 mCurrentState.layersSortedByZ.removeAt(idx); 1470 mCurrentState.layersSortedByZ.add(layer); 1471 // we need traversal (state changed) 1472 // AND transaction (list changed) 1473 flags |= eTransactionNeeded|eTraversalNeeded; 1474 } 1475 } 1476 if (what & eSizeChanged) { 1477 if (layer->setSize(s.w, s.h)) { 1478 flags |= eTraversalNeeded; 1479 mResizeTransationPending = true; 1480 } 1481 } 1482 if (what & eAlphaChanged) { 1483 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1484 flags |= eTraversalNeeded; 1485 } 1486 if (what & eMatrixChanged) { 1487 if (layer->setMatrix(s.matrix)) 1488 flags |= eTraversalNeeded; 1489 } 1490 if (what & eTransparentRegionChanged) { 1491 if (layer->setTransparentRegionHint(s.transparentRegion)) 1492 flags |= eTraversalNeeded; 1493 } 1494 if (what & eVisibilityChanged) { 1495 if (layer->setFlags(s.flags, s.mask)) 1496 flags |= eTraversalNeeded; 1497 } 1498 } 1499 return flags; 1500} 1501 1502void SurfaceFlinger::screenReleased(int dpy) 1503{ 1504 // this may be called by a signal handler, we can't do too much in here 1505 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1506 signalEvent(); 1507} 1508 1509void SurfaceFlinger::screenAcquired(int dpy) 1510{ 1511 // this may be called by a signal handler, we can't do too much in here 1512 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1513 signalEvent(); 1514} 1515 1516status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1517{ 1518 const size_t SIZE = 4096; 1519 char buffer[SIZE]; 1520 String8 result; 1521 1522 if (!PermissionCache::checkCallingPermission(sDump)) { 1523 snprintf(buffer, SIZE, "Permission Denial: " 1524 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1525 IPCThreadState::self()->getCallingPid(), 1526 IPCThreadState::self()->getCallingUid()); 1527 result.append(buffer); 1528 } else { 1529 1530 // figure out if we're stuck somewhere 1531 const nsecs_t now = systemTime(); 1532 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1533 const nsecs_t inTransaction(mDebugInTransaction); 1534 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1535 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1536 1537 // Try to get the main lock, but don't insist if we can't 1538 // (this would indicate SF is stuck, but we want to be able to 1539 // print something in dumpsys). 1540 int retry = 3; 1541 while (mStateLock.tryLock()<0 && --retry>=0) { 1542 usleep(1000000); 1543 } 1544 const bool locked(retry >= 0); 1545 if (!locked) { 1546 snprintf(buffer, SIZE, 1547 "SurfaceFlinger appears to be unresponsive, " 1548 "dumping anyways (no locks held)\n"); 1549 result.append(buffer); 1550 } 1551 1552 /* 1553 * Dump the visible layer list 1554 */ 1555 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1556 const size_t count = currentLayers.size(); 1557 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1558 result.append(buffer); 1559 for (size_t i=0 ; i<count ; i++) { 1560 const sp<LayerBase>& layer(currentLayers[i]); 1561 layer->dump(result, buffer, SIZE); 1562 const Layer::State& s(layer->drawingState()); 1563 s.transparentRegion.dump(result, "transparentRegion"); 1564 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1565 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1566 } 1567 1568 /* 1569 * Dump the layers in the purgatory 1570 */ 1571 1572 const size_t purgatorySize = mLayerPurgatory.size(); 1573 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1574 result.append(buffer); 1575 for (size_t i=0 ; i<purgatorySize ; i++) { 1576 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1577 layer->shortDump(result, buffer, SIZE); 1578 } 1579 1580 /* 1581 * Dump SurfaceFlinger global state 1582 */ 1583 1584 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1585 result.append(buffer); 1586 1587 const GLExtensions& extensions(GLExtensions::getInstance()); 1588 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1589 extensions.getVendor(), 1590 extensions.getRenderer(), 1591 extensions.getVersion()); 1592 result.append(buffer); 1593 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1594 result.append(buffer); 1595 1596 mWormholeRegion.dump(result, "WormholeRegion"); 1597 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1598 snprintf(buffer, SIZE, 1599 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1600 mFreezeDisplay?"yes":"no", mFreezeCount, 1601 mCurrentState.orientation, hw.canDraw()); 1602 result.append(buffer); 1603 snprintf(buffer, SIZE, 1604 " last eglSwapBuffers() time: %f us\n" 1605 " last transaction time : %f us\n", 1606 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1607 result.append(buffer); 1608 1609 if (inSwapBuffersDuration || !locked) { 1610 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1611 inSwapBuffersDuration/1000.0); 1612 result.append(buffer); 1613 } 1614 1615 if (inTransactionDuration || !locked) { 1616 snprintf(buffer, SIZE, " transaction time: %f us\n", 1617 inTransactionDuration/1000.0); 1618 result.append(buffer); 1619 } 1620 1621 /* 1622 * Dump HWComposer state 1623 */ 1624 HWComposer& hwc(hw.getHwComposer()); 1625 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1626 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1627 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1628 result.append(buffer); 1629 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1630 1631 /* 1632 * Dump gralloc state 1633 */ 1634 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1635 alloc.dump(result); 1636 hw.dump(result); 1637 1638 if (locked) { 1639 mStateLock.unlock(); 1640 } 1641 } 1642 write(fd, result.string(), result.size()); 1643 return NO_ERROR; 1644} 1645 1646status_t SurfaceFlinger::onTransact( 1647 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1648{ 1649 switch (code) { 1650 case CREATE_CONNECTION: 1651 case SET_TRANSACTION_STATE: 1652 case SET_ORIENTATION: 1653 case FREEZE_DISPLAY: 1654 case UNFREEZE_DISPLAY: 1655 case BOOT_FINISHED: 1656 case TURN_ELECTRON_BEAM_OFF: 1657 case TURN_ELECTRON_BEAM_ON: 1658 { 1659 // codes that require permission check 1660 IPCThreadState* ipc = IPCThreadState::self(); 1661 const int pid = ipc->getCallingPid(); 1662 const int uid = ipc->getCallingUid(); 1663 if ((uid != AID_GRAPHICS) && 1664 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1665 LOGE("Permission Denial: " 1666 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1667 return PERMISSION_DENIED; 1668 } 1669 break; 1670 } 1671 case CAPTURE_SCREEN: 1672 { 1673 // codes that require permission check 1674 IPCThreadState* ipc = IPCThreadState::self(); 1675 const int pid = ipc->getCallingPid(); 1676 const int uid = ipc->getCallingUid(); 1677 if ((uid != AID_GRAPHICS) && 1678 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1679 LOGE("Permission Denial: " 1680 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1681 return PERMISSION_DENIED; 1682 } 1683 break; 1684 } 1685 } 1686 1687 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1688 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1689 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1690 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1691 IPCThreadState* ipc = IPCThreadState::self(); 1692 const int pid = ipc->getCallingPid(); 1693 const int uid = ipc->getCallingUid(); 1694 LOGE("Permission Denial: " 1695 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1696 return PERMISSION_DENIED; 1697 } 1698 int n; 1699 switch (code) { 1700 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1701 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1702 return NO_ERROR; 1703 case 1002: // SHOW_UPDATES 1704 n = data.readInt32(); 1705 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1706 invalidateHwcGeometry(); 1707 repaintEverything(); 1708 return NO_ERROR; 1709 case 1003: // SHOW_BACKGROUND 1710 n = data.readInt32(); 1711 mDebugBackground = n ? 1 : 0; 1712 return NO_ERROR; 1713 case 1004:{ // repaint everything 1714 repaintEverything(); 1715 return NO_ERROR; 1716 } 1717 case 1005:{ // force transaction 1718 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1719 return NO_ERROR; 1720 } 1721 case 1006:{ // enable/disable GraphicLog 1722 int enabled = data.readInt32(); 1723 GraphicLog::getInstance().setEnabled(enabled); 1724 return NO_ERROR; 1725 } 1726 case 1007: // set mFreezeCount 1727 mFreezeCount = data.readInt32(); 1728 mFreezeDisplayTime = 0; 1729 return NO_ERROR; 1730 case 1008: // toggle use of hw composer 1731 n = data.readInt32(); 1732 mDebugDisableHWC = n ? 1 : 0; 1733 invalidateHwcGeometry(); 1734 repaintEverything(); 1735 return NO_ERROR; 1736 case 1009: // toggle use of transform hint 1737 n = data.readInt32(); 1738 mDebugDisableTransformHint = n ? 1 : 0; 1739 invalidateHwcGeometry(); 1740 repaintEverything(); 1741 return NO_ERROR; 1742 case 1010: // interrogate. 1743 reply->writeInt32(0); 1744 reply->writeInt32(0); 1745 reply->writeInt32(mDebugRegion); 1746 reply->writeInt32(mDebugBackground); 1747 return NO_ERROR; 1748 case 1013: { 1749 Mutex::Autolock _l(mStateLock); 1750 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1751 reply->writeInt32(hw.getPageFlipCount()); 1752 } 1753 return NO_ERROR; 1754 } 1755 } 1756 return err; 1757} 1758 1759void SurfaceFlinger::repaintEverything() { 1760 Mutex::Autolock _l(mStateLock); 1761 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1762 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1763 signalEvent(); 1764} 1765 1766// --------------------------------------------------------------------------- 1767 1768status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1769 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1770{ 1771 if (!GLExtensions::getInstance().haveFramebufferObject()) 1772 return INVALID_OPERATION; 1773 1774 // get screen geometry 1775 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1776 const uint32_t hw_w = hw.getWidth(); 1777 const uint32_t hw_h = hw.getHeight(); 1778 GLfloat u = 1; 1779 GLfloat v = 1; 1780 1781 // make sure to clear all GL error flags 1782 while ( glGetError() != GL_NO_ERROR ) ; 1783 1784 // create a FBO 1785 GLuint name, tname; 1786 glGenTextures(1, &tname); 1787 glBindTexture(GL_TEXTURE_2D, tname); 1788 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1789 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1790 if (glGetError() != GL_NO_ERROR) { 1791 while ( glGetError() != GL_NO_ERROR ) ; 1792 GLint tw = (2 << (31 - clz(hw_w))); 1793 GLint th = (2 << (31 - clz(hw_h))); 1794 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1795 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1796 u = GLfloat(hw_w) / tw; 1797 v = GLfloat(hw_h) / th; 1798 } 1799 glGenFramebuffersOES(1, &name); 1800 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1801 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1802 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1803 1804 // redraw the screen entirely... 1805 glClearColor(0,0,0,1); 1806 glClear(GL_COLOR_BUFFER_BIT); 1807 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1808 const size_t count = layers.size(); 1809 for (size_t i=0 ; i<count ; ++i) { 1810 const sp<LayerBase>& layer(layers[i]); 1811 layer->drawForSreenShot(); 1812 } 1813 1814 // back to main framebuffer 1815 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1816 glDisable(GL_SCISSOR_TEST); 1817 glDeleteFramebuffersOES(1, &name); 1818 1819 *textureName = tname; 1820 *uOut = u; 1821 *vOut = v; 1822 return NO_ERROR; 1823} 1824 1825// --------------------------------------------------------------------------- 1826 1827status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1828{ 1829 status_t result = PERMISSION_DENIED; 1830 1831 if (!GLExtensions::getInstance().haveFramebufferObject()) 1832 return INVALID_OPERATION; 1833 1834 // get screen geometry 1835 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1836 const uint32_t hw_w = hw.getWidth(); 1837 const uint32_t hw_h = hw.getHeight(); 1838 const Region screenBounds(hw.bounds()); 1839 1840 GLfloat u, v; 1841 GLuint tname; 1842 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1843 if (result != NO_ERROR) { 1844 return result; 1845 } 1846 1847 GLfloat vtx[8]; 1848 const GLfloat texCoords[4][2] = { {0,1}, {0,1-v}, {u,1-v}, {u,1} }; 1849 glBindTexture(GL_TEXTURE_2D, tname); 1850 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1851 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1852 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1853 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1854 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1855 glVertexPointer(2, GL_FLOAT, 0, vtx); 1856 1857 /* 1858 * Texture coordinate mapping 1859 * 1860 * u 1861 * 1 +----------+---+ 1862 * | | | | image is inverted 1863 * | V | | w.r.t. the texture 1864 * 1-v +----------+ | coordinates 1865 * | | 1866 * | | 1867 * | | 1868 * 0 +--------------+ 1869 * 0 1 1870 * 1871 */ 1872 1873 class s_curve_interpolator { 1874 const float nbFrames, s, v; 1875 public: 1876 s_curve_interpolator(int nbFrames, float s) 1877 : nbFrames(1.0f / (nbFrames-1)), s(s), 1878 v(1.0f + expf(-s + 0.5f*s)) { 1879 } 1880 float operator()(int f) { 1881 const float x = f * nbFrames; 1882 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1883 } 1884 }; 1885 1886 class v_stretch { 1887 const GLfloat hw_w, hw_h; 1888 public: 1889 v_stretch(uint32_t hw_w, uint32_t hw_h) 1890 : hw_w(hw_w), hw_h(hw_h) { 1891 } 1892 void operator()(GLfloat* vtx, float v) { 1893 const GLfloat w = hw_w + (hw_w * v); 1894 const GLfloat h = hw_h - (hw_h * v); 1895 const GLfloat x = (hw_w - w) * 0.5f; 1896 const GLfloat y = (hw_h - h) * 0.5f; 1897 vtx[0] = x; vtx[1] = y; 1898 vtx[2] = x; vtx[3] = y + h; 1899 vtx[4] = x + w; vtx[5] = y + h; 1900 vtx[6] = x + w; vtx[7] = y; 1901 } 1902 }; 1903 1904 class h_stretch { 1905 const GLfloat hw_w, hw_h; 1906 public: 1907 h_stretch(uint32_t hw_w, uint32_t hw_h) 1908 : hw_w(hw_w), hw_h(hw_h) { 1909 } 1910 void operator()(GLfloat* vtx, float v) { 1911 const GLfloat w = hw_w - (hw_w * v); 1912 const GLfloat h = 1.0f; 1913 const GLfloat x = (hw_w - w) * 0.5f; 1914 const GLfloat y = (hw_h - h) * 0.5f; 1915 vtx[0] = x; vtx[1] = y; 1916 vtx[2] = x; vtx[3] = y + h; 1917 vtx[4] = x + w; vtx[5] = y + h; 1918 vtx[6] = x + w; vtx[7] = y; 1919 } 1920 }; 1921 1922 // the full animation is 24 frames 1923 char value[PROPERTY_VALUE_MAX]; 1924 property_get("debug.sf.electron_frames", value, "24"); 1925 int nbFrames = (atoi(value) + 1) >> 1; 1926 if (nbFrames <= 0) // just in case 1927 nbFrames = 24; 1928 1929 s_curve_interpolator itr(nbFrames, 7.5f); 1930 s_curve_interpolator itg(nbFrames, 8.0f); 1931 s_curve_interpolator itb(nbFrames, 8.5f); 1932 1933 v_stretch vverts(hw_w, hw_h); 1934 glEnable(GL_BLEND); 1935 glBlendFunc(GL_ONE, GL_ONE); 1936 for (int i=0 ; i<nbFrames ; i++) { 1937 float x, y, w, h; 1938 const float vr = itr(i); 1939 const float vg = itg(i); 1940 const float vb = itb(i); 1941 1942 // clear screen 1943 glColorMask(1,1,1,1); 1944 glClear(GL_COLOR_BUFFER_BIT); 1945 glEnable(GL_TEXTURE_2D); 1946 1947 // draw the red plane 1948 vverts(vtx, vr); 1949 glColorMask(1,0,0,1); 1950 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1951 1952 // draw the green plane 1953 vverts(vtx, vg); 1954 glColorMask(0,1,0,1); 1955 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1956 1957 // draw the blue plane 1958 vverts(vtx, vb); 1959 glColorMask(0,0,1,1); 1960 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1961 1962 // draw the white highlight (we use the last vertices) 1963 glDisable(GL_TEXTURE_2D); 1964 glColorMask(1,1,1,1); 1965 glColor4f(vg, vg, vg, 1); 1966 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1967 hw.flip(screenBounds); 1968 } 1969 1970 h_stretch hverts(hw_w, hw_h); 1971 glDisable(GL_BLEND); 1972 glDisable(GL_TEXTURE_2D); 1973 glColorMask(1,1,1,1); 1974 for (int i=0 ; i<nbFrames ; i++) { 1975 const float v = itg(i); 1976 hverts(vtx, v); 1977 glClear(GL_COLOR_BUFFER_BIT); 1978 glColor4f(1-v, 1-v, 1-v, 1); 1979 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1980 hw.flip(screenBounds); 1981 } 1982 1983 glColorMask(1,1,1,1); 1984 glEnable(GL_SCISSOR_TEST); 1985 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1986 glDeleteTextures(1, &tname); 1987 glDisable(GL_TEXTURE_2D); 1988 return NO_ERROR; 1989} 1990 1991status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1992{ 1993 status_t result = PERMISSION_DENIED; 1994 1995 if (!GLExtensions::getInstance().haveFramebufferObject()) 1996 return INVALID_OPERATION; 1997 1998 1999 // get screen geometry 2000 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2001 const uint32_t hw_w = hw.getWidth(); 2002 const uint32_t hw_h = hw.getHeight(); 2003 const Region screenBounds(hw.bounds()); 2004 2005 GLfloat u, v; 2006 GLuint tname; 2007 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2008 if (result != NO_ERROR) { 2009 return result; 2010 } 2011 2012 // back to main framebuffer 2013 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2014 glDisable(GL_SCISSOR_TEST); 2015 2016 GLfloat vtx[8]; 2017 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2018 glBindTexture(GL_TEXTURE_2D, tname); 2019 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2020 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2021 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2022 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2023 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2024 glVertexPointer(2, GL_FLOAT, 0, vtx); 2025 2026 class s_curve_interpolator { 2027 const float nbFrames, s, v; 2028 public: 2029 s_curve_interpolator(int nbFrames, float s) 2030 : nbFrames(1.0f / (nbFrames-1)), s(s), 2031 v(1.0f + expf(-s + 0.5f*s)) { 2032 } 2033 float operator()(int f) { 2034 const float x = f * nbFrames; 2035 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2036 } 2037 }; 2038 2039 class v_stretch { 2040 const GLfloat hw_w, hw_h; 2041 public: 2042 v_stretch(uint32_t hw_w, uint32_t hw_h) 2043 : hw_w(hw_w), hw_h(hw_h) { 2044 } 2045 void operator()(GLfloat* vtx, float v) { 2046 const GLfloat w = hw_w + (hw_w * v); 2047 const GLfloat h = hw_h - (hw_h * v); 2048 const GLfloat x = (hw_w - w) * 0.5f; 2049 const GLfloat y = (hw_h - h) * 0.5f; 2050 vtx[0] = x; vtx[1] = y; 2051 vtx[2] = x; vtx[3] = y + h; 2052 vtx[4] = x + w; vtx[5] = y + h; 2053 vtx[6] = x + w; vtx[7] = y; 2054 } 2055 }; 2056 2057 class h_stretch { 2058 const GLfloat hw_w, hw_h; 2059 public: 2060 h_stretch(uint32_t hw_w, uint32_t hw_h) 2061 : hw_w(hw_w), hw_h(hw_h) { 2062 } 2063 void operator()(GLfloat* vtx, float v) { 2064 const GLfloat w = hw_w - (hw_w * v); 2065 const GLfloat h = 1.0f; 2066 const GLfloat x = (hw_w - w) * 0.5f; 2067 const GLfloat y = (hw_h - h) * 0.5f; 2068 vtx[0] = x; vtx[1] = y; 2069 vtx[2] = x; vtx[3] = y + h; 2070 vtx[4] = x + w; vtx[5] = y + h; 2071 vtx[6] = x + w; vtx[7] = y; 2072 } 2073 }; 2074 2075 // the full animation is 12 frames 2076 int nbFrames = 8; 2077 s_curve_interpolator itr(nbFrames, 7.5f); 2078 s_curve_interpolator itg(nbFrames, 8.0f); 2079 s_curve_interpolator itb(nbFrames, 8.5f); 2080 2081 h_stretch hverts(hw_w, hw_h); 2082 glDisable(GL_BLEND); 2083 glDisable(GL_TEXTURE_2D); 2084 glColorMask(1,1,1,1); 2085 for (int i=nbFrames-1 ; i>=0 ; i--) { 2086 const float v = itg(i); 2087 hverts(vtx, v); 2088 glClear(GL_COLOR_BUFFER_BIT); 2089 glColor4f(1-v, 1-v, 1-v, 1); 2090 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2091 hw.flip(screenBounds); 2092 } 2093 2094 nbFrames = 4; 2095 v_stretch vverts(hw_w, hw_h); 2096 glEnable(GL_BLEND); 2097 glBlendFunc(GL_ONE, GL_ONE); 2098 for (int i=nbFrames-1 ; i>=0 ; i--) { 2099 float x, y, w, h; 2100 const float vr = itr(i); 2101 const float vg = itg(i); 2102 const float vb = itb(i); 2103 2104 // clear screen 2105 glColorMask(1,1,1,1); 2106 glClear(GL_COLOR_BUFFER_BIT); 2107 glEnable(GL_TEXTURE_2D); 2108 2109 // draw the red plane 2110 vverts(vtx, vr); 2111 glColorMask(1,0,0,1); 2112 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2113 2114 // draw the green plane 2115 vverts(vtx, vg); 2116 glColorMask(0,1,0,1); 2117 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2118 2119 // draw the blue plane 2120 vverts(vtx, vb); 2121 glColorMask(0,0,1,1); 2122 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2123 2124 hw.flip(screenBounds); 2125 } 2126 2127 glColorMask(1,1,1,1); 2128 glEnable(GL_SCISSOR_TEST); 2129 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2130 glDeleteTextures(1, &tname); 2131 glDisable(GL_TEXTURE_2D); 2132 2133 return NO_ERROR; 2134} 2135 2136// --------------------------------------------------------------------------- 2137 2138status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2139{ 2140 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2141 if (!hw.canDraw()) { 2142 // we're already off 2143 return NO_ERROR; 2144 } 2145 2146 // turn off hwc while we're doing the animation 2147 hw.getHwComposer().disable(); 2148 // and make sure to turn it back on (if needed) next time we compose 2149 invalidateHwcGeometry(); 2150 2151 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2152 electronBeamOffAnimationImplLocked(); 2153 } 2154 2155 // always clear the whole screen at the end of the animation 2156 glClearColor(0,0,0,1); 2157 glDisable(GL_SCISSOR_TEST); 2158 glClear(GL_COLOR_BUFFER_BIT); 2159 glEnable(GL_SCISSOR_TEST); 2160 hw.flip( Region(hw.bounds()) ); 2161 2162 hw.setCanDraw(false); 2163 return NO_ERROR; 2164} 2165 2166status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2167{ 2168 class MessageTurnElectronBeamOff : public MessageBase { 2169 SurfaceFlinger* flinger; 2170 int32_t mode; 2171 status_t result; 2172 public: 2173 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2174 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2175 } 2176 status_t getResult() const { 2177 return result; 2178 } 2179 virtual bool handler() { 2180 Mutex::Autolock _l(flinger->mStateLock); 2181 result = flinger->turnElectronBeamOffImplLocked(mode); 2182 return true; 2183 } 2184 }; 2185 2186 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2187 status_t res = postMessageSync(msg); 2188 if (res == NO_ERROR) { 2189 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2190 2191 // work-around: when the power-manager calls us we activate the 2192 // animation. eventually, the "on" animation will be called 2193 // by the power-manager itself 2194 mElectronBeamAnimationMode = mode; 2195 } 2196 return res; 2197} 2198 2199// --------------------------------------------------------------------------- 2200 2201status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2202{ 2203 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2204 if (hw.canDraw()) { 2205 // we're already on 2206 return NO_ERROR; 2207 } 2208 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2209 electronBeamOnAnimationImplLocked(); 2210 } 2211 hw.setCanDraw(true); 2212 2213 // make sure to redraw the whole screen when the animation is done 2214 mDirtyRegion.set(hw.bounds()); 2215 signalEvent(); 2216 2217 return NO_ERROR; 2218} 2219 2220status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2221{ 2222 class MessageTurnElectronBeamOn : public MessageBase { 2223 SurfaceFlinger* flinger; 2224 int32_t mode; 2225 status_t result; 2226 public: 2227 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2228 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2229 } 2230 status_t getResult() const { 2231 return result; 2232 } 2233 virtual bool handler() { 2234 Mutex::Autolock _l(flinger->mStateLock); 2235 result = flinger->turnElectronBeamOnImplLocked(mode); 2236 return true; 2237 } 2238 }; 2239 2240 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2241 return NO_ERROR; 2242} 2243 2244// --------------------------------------------------------------------------- 2245 2246status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2247 sp<IMemoryHeap>* heap, 2248 uint32_t* w, uint32_t* h, PixelFormat* f, 2249 uint32_t sw, uint32_t sh, 2250 uint32_t minLayerZ, uint32_t maxLayerZ) 2251{ 2252 status_t result = PERMISSION_DENIED; 2253 2254 // only one display supported for now 2255 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2256 return BAD_VALUE; 2257 2258 // make sure none of the layers are protected 2259 const LayerVector& layers(mDrawingState.layersSortedByZ); 2260 const size_t count = layers.size(); 2261 for (size_t i=0 ; i<count ; ++i) { 2262 const sp<LayerBase>& layer(layers[i]); 2263 const uint32_t flags = layer->drawingState().flags; 2264 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2265 const uint32_t z = layer->drawingState().z; 2266 if (z >= minLayerZ && z <= maxLayerZ) { 2267 if (layer->isProtected()) { 2268 return INVALID_OPERATION; 2269 } 2270 } 2271 } 2272 } 2273 2274 if (!GLExtensions::getInstance().haveFramebufferObject()) 2275 return INVALID_OPERATION; 2276 2277 // get screen geometry 2278 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2279 const uint32_t hw_w = hw.getWidth(); 2280 const uint32_t hw_h = hw.getHeight(); 2281 2282 if ((sw > hw_w) || (sh > hw_h)) 2283 return BAD_VALUE; 2284 2285 sw = (!sw) ? hw_w : sw; 2286 sh = (!sh) ? hw_h : sh; 2287 const size_t size = sw * sh * 4; 2288 2289 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2290 // sw, sh, minLayerZ, maxLayerZ); 2291 2292 // make sure to clear all GL error flags 2293 while ( glGetError() != GL_NO_ERROR ) ; 2294 2295 // create a FBO 2296 GLuint name, tname; 2297 glGenRenderbuffersOES(1, &tname); 2298 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2299 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2300 glGenFramebuffersOES(1, &name); 2301 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2302 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2303 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2304 2305 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2306 2307 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2308 2309 // invert everything, b/c glReadPixel() below will invert the FB 2310 glViewport(0, 0, sw, sh); 2311 glScissor(0, 0, sw, sh); 2312 glEnable(GL_SCISSOR_TEST); 2313 glMatrixMode(GL_PROJECTION); 2314 glPushMatrix(); 2315 glLoadIdentity(); 2316 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2317 glMatrixMode(GL_MODELVIEW); 2318 2319 // redraw the screen entirely... 2320 glClearColor(0,0,0,1); 2321 glClear(GL_COLOR_BUFFER_BIT); 2322 2323 for (size_t i=0 ; i<count ; ++i) { 2324 const sp<LayerBase>& layer(layers[i]); 2325 const uint32_t flags = layer->drawingState().flags; 2326 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2327 const uint32_t z = layer->drawingState().z; 2328 if (z >= minLayerZ && z <= maxLayerZ) { 2329 layer->drawForSreenShot(); 2330 } 2331 } 2332 } 2333 2334 // XXX: this is needed on tegra 2335 glEnable(GL_SCISSOR_TEST); 2336 glScissor(0, 0, sw, sh); 2337 2338 // check for errors and return screen capture 2339 if (glGetError() != GL_NO_ERROR) { 2340 // error while rendering 2341 result = INVALID_OPERATION; 2342 } else { 2343 // allocate shared memory large enough to hold the 2344 // screen capture 2345 sp<MemoryHeapBase> base( 2346 new MemoryHeapBase(size, 0, "screen-capture") ); 2347 void* const ptr = base->getBase(); 2348 if (ptr) { 2349 // capture the screen with glReadPixels() 2350 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2351 if (glGetError() == GL_NO_ERROR) { 2352 *heap = base; 2353 *w = sw; 2354 *h = sh; 2355 *f = PIXEL_FORMAT_RGBA_8888; 2356 result = NO_ERROR; 2357 } 2358 } else { 2359 result = NO_MEMORY; 2360 } 2361 } 2362 glEnable(GL_SCISSOR_TEST); 2363 glViewport(0, 0, hw_w, hw_h); 2364 glMatrixMode(GL_PROJECTION); 2365 glPopMatrix(); 2366 glMatrixMode(GL_MODELVIEW); 2367 } else { 2368 result = BAD_VALUE; 2369 } 2370 2371 // release FBO resources 2372 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2373 glDeleteRenderbuffersOES(1, &tname); 2374 glDeleteFramebuffersOES(1, &name); 2375 2376 hw.compositionComplete(); 2377 2378 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2379 2380 return result; 2381} 2382 2383 2384status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2385 sp<IMemoryHeap>* heap, 2386 uint32_t* width, uint32_t* height, PixelFormat* format, 2387 uint32_t sw, uint32_t sh, 2388 uint32_t minLayerZ, uint32_t maxLayerZ) 2389{ 2390 // only one display supported for now 2391 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2392 return BAD_VALUE; 2393 2394 if (!GLExtensions::getInstance().haveFramebufferObject()) 2395 return INVALID_OPERATION; 2396 2397 class MessageCaptureScreen : public MessageBase { 2398 SurfaceFlinger* flinger; 2399 DisplayID dpy; 2400 sp<IMemoryHeap>* heap; 2401 uint32_t* w; 2402 uint32_t* h; 2403 PixelFormat* f; 2404 uint32_t sw; 2405 uint32_t sh; 2406 uint32_t minLayerZ; 2407 uint32_t maxLayerZ; 2408 status_t result; 2409 public: 2410 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2411 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2412 uint32_t sw, uint32_t sh, 2413 uint32_t minLayerZ, uint32_t maxLayerZ) 2414 : flinger(flinger), dpy(dpy), 2415 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2416 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2417 result(PERMISSION_DENIED) 2418 { 2419 } 2420 status_t getResult() const { 2421 return result; 2422 } 2423 virtual bool handler() { 2424 Mutex::Autolock _l(flinger->mStateLock); 2425 2426 // if we have secure windows, never allow the screen capture 2427 if (flinger->mSecureFrameBuffer) 2428 return true; 2429 2430 result = flinger->captureScreenImplLocked(dpy, 2431 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2432 2433 return true; 2434 } 2435 }; 2436 2437 sp<MessageBase> msg = new MessageCaptureScreen(this, 2438 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2439 status_t res = postMessageSync(msg); 2440 if (res == NO_ERROR) { 2441 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2442 } 2443 return res; 2444} 2445 2446// --------------------------------------------------------------------------- 2447 2448sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2449{ 2450 sp<Layer> result; 2451 Mutex::Autolock _l(mStateLock); 2452 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2453 return result; 2454} 2455 2456// --------------------------------------------------------------------------- 2457 2458Client::Client(const sp<SurfaceFlinger>& flinger) 2459 : mFlinger(flinger), mNameGenerator(1) 2460{ 2461} 2462 2463Client::~Client() 2464{ 2465 const size_t count = mLayers.size(); 2466 for (size_t i=0 ; i<count ; i++) { 2467 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2468 if (layer != 0) { 2469 mFlinger->removeLayer(layer); 2470 } 2471 } 2472} 2473 2474status_t Client::initCheck() const { 2475 return NO_ERROR; 2476} 2477 2478size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2479{ 2480 Mutex::Autolock _l(mLock); 2481 size_t name = mNameGenerator++; 2482 mLayers.add(name, layer); 2483 return name; 2484} 2485 2486void Client::detachLayer(const LayerBaseClient* layer) 2487{ 2488 Mutex::Autolock _l(mLock); 2489 // we do a linear search here, because this doesn't happen often 2490 const size_t count = mLayers.size(); 2491 for (size_t i=0 ; i<count ; i++) { 2492 if (mLayers.valueAt(i) == layer) { 2493 mLayers.removeItemsAt(i, 1); 2494 break; 2495 } 2496 } 2497} 2498sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2499{ 2500 Mutex::Autolock _l(mLock); 2501 sp<LayerBaseClient> lbc; 2502 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2503 if (layer != 0) { 2504 lbc = layer.promote(); 2505 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2506 } 2507 return lbc; 2508} 2509 2510 2511status_t Client::onTransact( 2512 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2513{ 2514 // these must be checked 2515 IPCThreadState* ipc = IPCThreadState::self(); 2516 const int pid = ipc->getCallingPid(); 2517 const int uid = ipc->getCallingUid(); 2518 const int self_pid = getpid(); 2519 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2520 // we're called from a different process, do the real check 2521 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2522 { 2523 LOGE("Permission Denial: " 2524 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2525 return PERMISSION_DENIED; 2526 } 2527 } 2528 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2529} 2530 2531 2532sp<ISurface> Client::createSurface( 2533 ISurfaceComposerClient::surface_data_t* params, 2534 const String8& name, 2535 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2536 uint32_t flags) 2537{ 2538 /* 2539 * createSurface must be called from the GL thread so that it can 2540 * have access to the GL context. 2541 */ 2542 2543 class MessageCreateSurface : public MessageBase { 2544 sp<ISurface> result; 2545 SurfaceFlinger* flinger; 2546 ISurfaceComposerClient::surface_data_t* params; 2547 Client* client; 2548 const String8& name; 2549 DisplayID display; 2550 uint32_t w, h; 2551 PixelFormat format; 2552 uint32_t flags; 2553 public: 2554 MessageCreateSurface(SurfaceFlinger* flinger, 2555 ISurfaceComposerClient::surface_data_t* params, 2556 const String8& name, Client* client, 2557 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2558 uint32_t flags) 2559 : flinger(flinger), params(params), client(client), name(name), 2560 display(display), w(w), h(h), format(format), flags(flags) 2561 { 2562 } 2563 sp<ISurface> getResult() const { return result; } 2564 virtual bool handler() { 2565 result = flinger->createSurface(params, name, client, 2566 display, w, h, format, flags); 2567 return true; 2568 } 2569 }; 2570 2571 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2572 params, name, this, display, w, h, format, flags); 2573 mFlinger->postMessageSync(msg); 2574 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2575} 2576status_t Client::destroySurface(SurfaceID sid) { 2577 return mFlinger->removeSurface(this, sid); 2578} 2579 2580// --------------------------------------------------------------------------- 2581 2582GraphicBufferAlloc::GraphicBufferAlloc() {} 2583 2584GraphicBufferAlloc::~GraphicBufferAlloc() {} 2585 2586sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2587 PixelFormat format, uint32_t usage, status_t* error) { 2588 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2589 status_t err = graphicBuffer->initCheck(); 2590 *error = err; 2591 if (err != 0 || graphicBuffer->handle == 0) { 2592 if (err == NO_MEMORY) { 2593 GraphicBuffer::dumpAllocationsToSystemLog(); 2594 } 2595 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2596 "failed (%s), handle=%p", 2597 w, h, strerror(-err), graphicBuffer->handle); 2598 return 0; 2599 } 2600 return graphicBuffer; 2601} 2602 2603// --------------------------------------------------------------------------- 2604 2605GraphicPlane::GraphicPlane() 2606 : mHw(0) 2607{ 2608} 2609 2610GraphicPlane::~GraphicPlane() { 2611 delete mHw; 2612} 2613 2614bool GraphicPlane::initialized() const { 2615 return mHw ? true : false; 2616} 2617 2618int GraphicPlane::getWidth() const { 2619 return mWidth; 2620} 2621 2622int GraphicPlane::getHeight() const { 2623 return mHeight; 2624} 2625 2626void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2627{ 2628 mHw = hw; 2629 2630 // initialize the display orientation transform. 2631 // it's a constant that should come from the display driver. 2632 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2633 char property[PROPERTY_VALUE_MAX]; 2634 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2635 //displayOrientation 2636 switch (atoi(property)) { 2637 case 90: 2638 displayOrientation = ISurfaceComposer::eOrientation90; 2639 break; 2640 case 270: 2641 displayOrientation = ISurfaceComposer::eOrientation270; 2642 break; 2643 } 2644 } 2645 2646 const float w = hw->getWidth(); 2647 const float h = hw->getHeight(); 2648 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2649 &mDisplayTransform); 2650 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2651 mDisplayWidth = h; 2652 mDisplayHeight = w; 2653 } else { 2654 mDisplayWidth = w; 2655 mDisplayHeight = h; 2656 } 2657 2658 setOrientation(ISurfaceComposer::eOrientationDefault); 2659} 2660 2661status_t GraphicPlane::orientationToTransfrom( 2662 int orientation, int w, int h, Transform* tr) 2663{ 2664 uint32_t flags = 0; 2665 switch (orientation) { 2666 case ISurfaceComposer::eOrientationDefault: 2667 flags = Transform::ROT_0; 2668 break; 2669 case ISurfaceComposer::eOrientation90: 2670 flags = Transform::ROT_90; 2671 break; 2672 case ISurfaceComposer::eOrientation180: 2673 flags = Transform::ROT_180; 2674 break; 2675 case ISurfaceComposer::eOrientation270: 2676 flags = Transform::ROT_270; 2677 break; 2678 default: 2679 return BAD_VALUE; 2680 } 2681 tr->set(flags, w, h); 2682 return NO_ERROR; 2683} 2684 2685status_t GraphicPlane::setOrientation(int orientation) 2686{ 2687 // If the rotation can be handled in hardware, this is where 2688 // the magic should happen. 2689 2690 const DisplayHardware& hw(displayHardware()); 2691 const float w = mDisplayWidth; 2692 const float h = mDisplayHeight; 2693 mWidth = int(w); 2694 mHeight = int(h); 2695 2696 Transform orientationTransform; 2697 GraphicPlane::orientationToTransfrom(orientation, w, h, 2698 &orientationTransform); 2699 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2700 mWidth = int(h); 2701 mHeight = int(w); 2702 } 2703 2704 mOrientation = orientation; 2705 mGlobalTransform = mDisplayTransform * orientationTransform; 2706 return NO_ERROR; 2707} 2708 2709const DisplayHardware& GraphicPlane::displayHardware() const { 2710 return *mHw; 2711} 2712 2713DisplayHardware& GraphicPlane::editDisplayHardware() { 2714 return *mHw; 2715} 2716 2717const Transform& GraphicPlane::transform() const { 2718 return mGlobalTransform; 2719} 2720 2721EGLDisplay GraphicPlane::getEGLDisplay() const { 2722 return mHw->getEGLDisplay(); 2723} 2724 2725// --------------------------------------------------------------------------- 2726 2727}; // namespace android 2728