SurfaceFlinger.cpp revision b0610335d745718f5ee54f15ef1a492921d759f4
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 (!mInvalidRegion.isEmpty()) { 473 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 474 const nsecs_t now = systemTime(); 475 mDebugInSwapBuffers = now; 476 hw.flip(mInvalidRegion); 477 mLastSwapBufferTime = systemTime() - now; 478 mDebugInSwapBuffers = 0; 479 mInvalidRegion.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 mInvalidRegion.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(mInvalidRegion.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(mInvalidRegion.bounds()); 872 } else { 873 // we need to redraw everything (the whole screen) 874 mDirtyRegion.set(hw.bounds()); 875 mInvalidRegion = mDirtyRegion; 876 } 877 } 878 879 // compose all surfaces 880 composeSurfaces(mDirtyRegion); 881 882 // clear the dirty regions 883 mDirtyRegion.clear(); 884} 885 886void SurfaceFlinger::composeSurfaces(const Region& dirty) 887{ 888 if (UNLIKELY(!mWormholeRegion.isEmpty())) { 889 // should never happen unless the window manager has a bug 890 // draw something... 891 drawWormhole(); 892 } 893 894 status_t err = NO_ERROR; 895 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 896 size_t count = layers.size(); 897 898 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 899 HWComposer& hwc(hw.getHwComposer()); 900 hwc_layer_t* const cur(hwc.getLayers()); 901 902 LOGE_IF(cur && hwc.getNumLayers() != count, 903 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 904 hwc.getNumLayers(), count); 905 906 // just to be extra-safe, use the smallest count 907 if (hwc.initCheck() == NO_ERROR) { 908 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 909 } 910 911 /* 912 * update the per-frame h/w composer data for each layer 913 * and build the transparent region of the FB 914 */ 915 Region transparent; 916 if (cur) { 917 for (size_t i=0 ; i<count ; i++) { 918 const sp<LayerBase>& layer(layers[i]); 919 layer->setPerFrameData(&cur[i]); 920 } 921 err = hwc.prepare(); 922 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 923 924 if (err == NO_ERROR) { 925 for (size_t i=0 ; i<count ; i++) { 926 if (cur[i].hints & HWC_HINT_CLEAR_FB) { 927 const sp<LayerBase>& layer(layers[i]); 928 if (layer->isOpaque()) { 929 transparent.orSelf(layer->visibleRegionScreen); 930 } 931 } 932 } 933 934 /* 935 * clear the area of the FB that need to be transparent 936 */ 937 transparent.andSelf(dirty); 938 if (!transparent.isEmpty()) { 939 glClearColor(0,0,0,0); 940 Region::const_iterator it = transparent.begin(); 941 Region::const_iterator const end = transparent.end(); 942 const int32_t height = hw.getHeight(); 943 while (it != end) { 944 const Rect& r(*it++); 945 const GLint sy = height - (r.top + r.height()); 946 glScissor(r.left, sy, r.width(), r.height()); 947 glClear(GL_COLOR_BUFFER_BIT); 948 } 949 } 950 } 951 } 952 953 954 /* 955 * and then, render the layers targeted at the framebuffer 956 */ 957 for (size_t i=0 ; i<count ; i++) { 958 if (cur) { 959 if ((cur[i].compositionType != HWC_FRAMEBUFFER) && 960 !(cur[i].flags & HWC_SKIP_LAYER)) { 961 // skip layers handled by the HAL 962 continue; 963 } 964 } 965 966 const sp<LayerBase>& layer(layers[i]); 967 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 968 if (!clip.isEmpty()) { 969 layer->draw(clip); 970 } 971 } 972} 973 974void SurfaceFlinger::debugFlashRegions() 975{ 976 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 977 const uint32_t flags = hw.getFlags(); 978 const int32_t height = hw.getHeight(); 979 if (mInvalidRegion.isEmpty()) { 980 return; 981 } 982 983 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 984 (flags & DisplayHardware::BUFFER_PRESERVED))) { 985 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 986 mDirtyRegion.bounds() : hw.bounds()); 987 composeSurfaces(repaint); 988 } 989 990 glDisable(GL_BLEND); 991 glDisable(GL_DITHER); 992 glDisable(GL_SCISSOR_TEST); 993 994 static int toggle = 0; 995 toggle = 1 - toggle; 996 if (toggle) { 997 glColor4f(1, 0, 1, 1); 998 } else { 999 glColor4f(1, 1, 0, 1); 1000 } 1001 1002 Region::const_iterator it = mDirtyRegion.begin(); 1003 Region::const_iterator const end = mDirtyRegion.end(); 1004 while (it != end) { 1005 const Rect& r = *it++; 1006 GLfloat vertices[][2] = { 1007 { r.left, height - r.top }, 1008 { r.left, height - r.bottom }, 1009 { r.right, height - r.bottom }, 1010 { r.right, height - r.top } 1011 }; 1012 glVertexPointer(2, GL_FLOAT, 0, vertices); 1013 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1014 } 1015 1016 hw.flip(mInvalidRegion); 1017 1018 if (mDebugRegion > 1) 1019 usleep(mDebugRegion * 1000); 1020 1021 glEnable(GL_SCISSOR_TEST); 1022} 1023 1024void SurfaceFlinger::drawWormhole() const 1025{ 1026 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1027 if (region.isEmpty()) 1028 return; 1029 1030 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1031 const int32_t width = hw.getWidth(); 1032 const int32_t height = hw.getHeight(); 1033 1034 glDisable(GL_BLEND); 1035 glDisable(GL_DITHER); 1036 1037 if (LIKELY(!mDebugBackground)) { 1038 glClearColor(0,0,0,0); 1039 Region::const_iterator it = region.begin(); 1040 Region::const_iterator const end = region.end(); 1041 while (it != end) { 1042 const Rect& r = *it++; 1043 const GLint sy = height - (r.top + r.height()); 1044 glScissor(r.left, sy, r.width(), r.height()); 1045 glClear(GL_COLOR_BUFFER_BIT); 1046 } 1047 } else { 1048 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1049 { width, height }, { 0, height } }; 1050 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1051 glVertexPointer(2, GL_SHORT, 0, vertices); 1052 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1053 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1054#if defined(GL_OES_EGL_image_external) 1055 if (GLExtensions::getInstance().haveTextureExternal()) { 1056 glDisable(GL_TEXTURE_EXTERNAL_OES); 1057 } 1058#endif 1059 glEnable(GL_TEXTURE_2D); 1060 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1061 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1062 glMatrixMode(GL_TEXTURE); 1063 glLoadIdentity(); 1064 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1065 Region::const_iterator it = region.begin(); 1066 Region::const_iterator const end = region.end(); 1067 while (it != end) { 1068 const Rect& r = *it++; 1069 const GLint sy = height - (r.top + r.height()); 1070 glScissor(r.left, sy, r.width(), r.height()); 1071 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1072 } 1073 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1074 glDisable(GL_TEXTURE_2D); 1075 glLoadIdentity(); 1076 glMatrixMode(GL_MODELVIEW); 1077 } 1078} 1079 1080void SurfaceFlinger::debugShowFPS() const 1081{ 1082 static int mFrameCount; 1083 static int mLastFrameCount = 0; 1084 static nsecs_t mLastFpsTime = 0; 1085 static float mFps = 0; 1086 mFrameCount++; 1087 nsecs_t now = systemTime(); 1088 nsecs_t diff = now - mLastFpsTime; 1089 if (diff > ms2ns(250)) { 1090 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1091 mLastFpsTime = now; 1092 mLastFrameCount = mFrameCount; 1093 } 1094 // XXX: mFPS has the value we want 1095 } 1096 1097status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1098{ 1099 Mutex::Autolock _l(mStateLock); 1100 addLayer_l(layer); 1101 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1102 return NO_ERROR; 1103} 1104 1105status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1106{ 1107 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1108 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1109} 1110 1111ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1112 const sp<LayerBaseClient>& lbc) 1113{ 1114 // attach this layer to the client 1115 size_t name = client->attachLayer(lbc); 1116 1117 Mutex::Autolock _l(mStateLock); 1118 1119 // add this layer to the current state list 1120 addLayer_l(lbc); 1121 1122 return ssize_t(name); 1123} 1124 1125status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1126{ 1127 Mutex::Autolock _l(mStateLock); 1128 status_t err = purgatorizeLayer_l(layer); 1129 if (err == NO_ERROR) 1130 setTransactionFlags(eTransactionNeeded); 1131 return err; 1132} 1133 1134status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1135{ 1136 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1137 if (lbc != 0) { 1138 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1139 } 1140 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1141 if (index >= 0) { 1142 mLayersRemoved = true; 1143 return NO_ERROR; 1144 } 1145 return status_t(index); 1146} 1147 1148status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1149{ 1150 // First add the layer to the purgatory list, which makes sure it won't 1151 // go away, then remove it from the main list (through a transaction). 1152 ssize_t err = removeLayer_l(layerBase); 1153 if (err >= 0) { 1154 mLayerPurgatory.add(layerBase); 1155 } 1156 1157 layerBase->onRemoved(); 1158 1159 // it's possible that we don't find a layer, because it might 1160 // have been destroyed already -- this is not technically an error 1161 // from the user because there is a race between Client::destroySurface(), 1162 // ~Client() and ~ISurface(). 1163 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1164} 1165 1166status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1167{ 1168 layer->forceVisibilityTransaction(); 1169 setTransactionFlags(eTraversalNeeded); 1170 return NO_ERROR; 1171} 1172 1173uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1174{ 1175 return android_atomic_release_load(&mTransactionFlags); 1176} 1177 1178uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1179{ 1180 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1181} 1182 1183uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1184{ 1185 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1186 if ((old & flags)==0) { // wake the server up 1187 signalEvent(); 1188 } 1189 return old; 1190} 1191 1192 1193void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state) { 1194 Mutex::Autolock _l(mStateLock); 1195 1196 uint32_t flags = 0; 1197 const size_t count = state.size(); 1198 for (size_t i=0 ; i<count ; i++) { 1199 const ComposerState& s(state[i]); 1200 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1201 flags |= setClientStateLocked(client, s.state); 1202 } 1203 if (flags) { 1204 setTransactionFlags(flags); 1205 } 1206 1207 signalEvent(); 1208 1209 // if there is a transaction with a resize, wait for it to 1210 // take effect before returning. 1211 while (mResizeTransationPending) { 1212 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1213 if (CC_UNLIKELY(err != NO_ERROR)) { 1214 // just in case something goes wrong in SF, return to the 1215 // called after a few seconds. 1216 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1217 mResizeTransationPending = false; 1218 break; 1219 } 1220 } 1221} 1222 1223status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1224{ 1225 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1226 return BAD_VALUE; 1227 1228 Mutex::Autolock _l(mStateLock); 1229 mCurrentState.freezeDisplay = 1; 1230 setTransactionFlags(eTransactionNeeded); 1231 1232 // flags is intended to communicate some sort of animation behavior 1233 // (for instance fading) 1234 return NO_ERROR; 1235} 1236 1237status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1238{ 1239 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1240 return BAD_VALUE; 1241 1242 Mutex::Autolock _l(mStateLock); 1243 mCurrentState.freezeDisplay = 0; 1244 setTransactionFlags(eTransactionNeeded); 1245 1246 // flags is intended to communicate some sort of animation behavior 1247 // (for instance fading) 1248 return NO_ERROR; 1249} 1250 1251int SurfaceFlinger::setOrientation(DisplayID dpy, 1252 int orientation, uint32_t flags) 1253{ 1254 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1255 return BAD_VALUE; 1256 1257 Mutex::Autolock _l(mStateLock); 1258 if (mCurrentState.orientation != orientation) { 1259 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1260 mCurrentState.orientationType = flags; 1261 mCurrentState.orientation = orientation; 1262 setTransactionFlags(eTransactionNeeded); 1263 mTransactionCV.wait(mStateLock); 1264 } else { 1265 orientation = BAD_VALUE; 1266 } 1267 } 1268 return orientation; 1269} 1270 1271sp<ISurface> SurfaceFlinger::createSurface( 1272 ISurfaceComposerClient::surface_data_t* params, 1273 const String8& name, 1274 const sp<Client>& client, 1275 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1276 uint32_t flags) 1277{ 1278 sp<LayerBaseClient> layer; 1279 sp<ISurface> surfaceHandle; 1280 1281 if (int32_t(w|h) < 0) { 1282 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1283 int(w), int(h)); 1284 return surfaceHandle; 1285 } 1286 1287 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1288 sp<Layer> normalLayer; 1289 switch (flags & eFXSurfaceMask) { 1290 case eFXSurfaceNormal: 1291 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1292 layer = normalLayer; 1293 break; 1294 case eFXSurfaceBlur: 1295 // for now we treat Blur as Dim, until we can implement it 1296 // efficiently. 1297 case eFXSurfaceDim: 1298 layer = createDimSurface(client, d, w, h, flags); 1299 break; 1300 } 1301 1302 if (layer != 0) { 1303 layer->initStates(w, h, flags); 1304 layer->setName(name); 1305 ssize_t token = addClientLayer(client, layer); 1306 1307 surfaceHandle = layer->getSurface(); 1308 if (surfaceHandle != 0) { 1309 params->token = token; 1310 params->identity = layer->getIdentity(); 1311 if (normalLayer != 0) { 1312 Mutex::Autolock _l(mStateLock); 1313 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1314 } 1315 } 1316 1317 setTransactionFlags(eTransactionNeeded); 1318 } 1319 1320 return surfaceHandle; 1321} 1322 1323sp<Layer> SurfaceFlinger::createNormalSurface( 1324 const sp<Client>& client, DisplayID display, 1325 uint32_t w, uint32_t h, uint32_t flags, 1326 PixelFormat& format) 1327{ 1328 // initialize the surfaces 1329 switch (format) { // TODO: take h/w into account 1330 case PIXEL_FORMAT_TRANSPARENT: 1331 case PIXEL_FORMAT_TRANSLUCENT: 1332 format = PIXEL_FORMAT_RGBA_8888; 1333 break; 1334 case PIXEL_FORMAT_OPAQUE: 1335#ifdef NO_RGBX_8888 1336 format = PIXEL_FORMAT_RGB_565; 1337#else 1338 format = PIXEL_FORMAT_RGBX_8888; 1339#endif 1340 break; 1341 } 1342 1343#ifdef NO_RGBX_8888 1344 if (format == PIXEL_FORMAT_RGBX_8888) 1345 format = PIXEL_FORMAT_RGBA_8888; 1346#endif 1347 1348 sp<Layer> layer = new Layer(this, display, client); 1349 status_t err = layer->setBuffers(w, h, format, flags); 1350 if (LIKELY(err != NO_ERROR)) { 1351 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1352 layer.clear(); 1353 } 1354 return layer; 1355} 1356 1357sp<LayerDim> SurfaceFlinger::createDimSurface( 1358 const sp<Client>& client, DisplayID display, 1359 uint32_t w, uint32_t h, uint32_t flags) 1360{ 1361 sp<LayerDim> layer = new LayerDim(this, display, client); 1362 layer->initStates(w, h, flags); 1363 return layer; 1364} 1365 1366status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1367{ 1368 /* 1369 * called by the window manager, when a surface should be marked for 1370 * destruction. 1371 * 1372 * The surface is removed from the current and drawing lists, but placed 1373 * in the purgatory queue, so it's not destroyed right-away (we need 1374 * to wait for all client's references to go away first). 1375 */ 1376 1377 status_t err = NAME_NOT_FOUND; 1378 Mutex::Autolock _l(mStateLock); 1379 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1380 if (layer != 0) { 1381 err = purgatorizeLayer_l(layer); 1382 if (err == NO_ERROR) { 1383 setTransactionFlags(eTransactionNeeded); 1384 } 1385 } 1386 return err; 1387} 1388 1389status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1390{ 1391 // called by ~ISurface() when all references are gone 1392 status_t err = NO_ERROR; 1393 sp<LayerBaseClient> l(layer.promote()); 1394 if (l != NULL) { 1395 Mutex::Autolock _l(mStateLock); 1396 err = removeLayer_l(l); 1397 if (err == NAME_NOT_FOUND) { 1398 // The surface wasn't in the current list, which means it was 1399 // removed already, which means it is in the purgatory, 1400 // and need to be removed from there. 1401 ssize_t idx = mLayerPurgatory.remove(l); 1402 LOGE_IF(idx < 0, 1403 "layer=%p is not in the purgatory list", l.get()); 1404 } 1405 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1406 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1407 } 1408 return err; 1409} 1410 1411uint32_t SurfaceFlinger::setClientStateLocked( 1412 const sp<Client>& client, 1413 const layer_state_t& s) 1414{ 1415 uint32_t flags = 0; 1416 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1417 if (layer != 0) { 1418 const uint32_t what = s.what; 1419 if (what & ePositionChanged) { 1420 if (layer->setPosition(s.x, s.y)) 1421 flags |= eTraversalNeeded; 1422 } 1423 if (what & eLayerChanged) { 1424 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1425 if (layer->setLayer(s.z)) { 1426 mCurrentState.layersSortedByZ.removeAt(idx); 1427 mCurrentState.layersSortedByZ.add(layer); 1428 // we need traversal (state changed) 1429 // AND transaction (list changed) 1430 flags |= eTransactionNeeded|eTraversalNeeded; 1431 } 1432 } 1433 if (what & eSizeChanged) { 1434 if (layer->setSize(s.w, s.h)) { 1435 flags |= eTraversalNeeded; 1436 mResizeTransationPending = true; 1437 } 1438 } 1439 if (what & eAlphaChanged) { 1440 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1441 flags |= eTraversalNeeded; 1442 } 1443 if (what & eMatrixChanged) { 1444 if (layer->setMatrix(s.matrix)) 1445 flags |= eTraversalNeeded; 1446 } 1447 if (what & eTransparentRegionChanged) { 1448 if (layer->setTransparentRegionHint(s.transparentRegion)) 1449 flags |= eTraversalNeeded; 1450 } 1451 if (what & eVisibilityChanged) { 1452 if (layer->setFlags(s.flags, s.mask)) 1453 flags |= eTraversalNeeded; 1454 } 1455 } 1456 return flags; 1457} 1458 1459void SurfaceFlinger::screenReleased(int dpy) 1460{ 1461 // this may be called by a signal handler, we can't do too much in here 1462 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1463 signalEvent(); 1464} 1465 1466void SurfaceFlinger::screenAcquired(int dpy) 1467{ 1468 // this may be called by a signal handler, we can't do too much in here 1469 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1470 signalEvent(); 1471} 1472 1473status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1474{ 1475 const size_t SIZE = 4096; 1476 char buffer[SIZE]; 1477 String8 result; 1478 1479 if (!PermissionCache::checkCallingPermission(sDump)) { 1480 snprintf(buffer, SIZE, "Permission Denial: " 1481 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1482 IPCThreadState::self()->getCallingPid(), 1483 IPCThreadState::self()->getCallingUid()); 1484 result.append(buffer); 1485 } else { 1486 1487 // figure out if we're stuck somewhere 1488 const nsecs_t now = systemTime(); 1489 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1490 const nsecs_t inTransaction(mDebugInTransaction); 1491 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1492 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1493 1494 // Try to get the main lock, but don't insist if we can't 1495 // (this would indicate SF is stuck, but we want to be able to 1496 // print something in dumpsys). 1497 int retry = 3; 1498 while (mStateLock.tryLock()<0 && --retry>=0) { 1499 usleep(1000000); 1500 } 1501 const bool locked(retry >= 0); 1502 if (!locked) { 1503 snprintf(buffer, SIZE, 1504 "SurfaceFlinger appears to be unresponsive, " 1505 "dumping anyways (no locks held)\n"); 1506 result.append(buffer); 1507 } 1508 1509 /* 1510 * Dump the visible layer list 1511 */ 1512 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1513 const size_t count = currentLayers.size(); 1514 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1515 result.append(buffer); 1516 for (size_t i=0 ; i<count ; i++) { 1517 const sp<LayerBase>& layer(currentLayers[i]); 1518 layer->dump(result, buffer, SIZE); 1519 const Layer::State& s(layer->drawingState()); 1520 s.transparentRegion.dump(result, "transparentRegion"); 1521 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1522 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1523 } 1524 1525 /* 1526 * Dump the layers in the purgatory 1527 */ 1528 1529 const size_t purgatorySize = mLayerPurgatory.size(); 1530 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1531 result.append(buffer); 1532 for (size_t i=0 ; i<purgatorySize ; i++) { 1533 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1534 layer->shortDump(result, buffer, SIZE); 1535 } 1536 1537 /* 1538 * Dump SurfaceFlinger global state 1539 */ 1540 1541 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1542 result.append(buffer); 1543 1544 const GLExtensions& extensions(GLExtensions::getInstance()); 1545 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1546 extensions.getVendor(), 1547 extensions.getRenderer(), 1548 extensions.getVersion()); 1549 result.append(buffer); 1550 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1551 result.append(buffer); 1552 1553 mWormholeRegion.dump(result, "WormholeRegion"); 1554 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1555 snprintf(buffer, SIZE, 1556 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1557 mFreezeDisplay?"yes":"no", mFreezeCount, 1558 mCurrentState.orientation, hw.canDraw()); 1559 result.append(buffer); 1560 snprintf(buffer, SIZE, 1561 " last eglSwapBuffers() time: %f us\n" 1562 " last transaction time : %f us\n", 1563 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1564 result.append(buffer); 1565 1566 if (inSwapBuffersDuration || !locked) { 1567 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1568 inSwapBuffersDuration/1000.0); 1569 result.append(buffer); 1570 } 1571 1572 if (inTransactionDuration || !locked) { 1573 snprintf(buffer, SIZE, " transaction time: %f us\n", 1574 inTransactionDuration/1000.0); 1575 result.append(buffer); 1576 } 1577 1578 /* 1579 * Dump HWComposer state 1580 */ 1581 HWComposer& hwc(hw.getHwComposer()); 1582 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1583 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1584 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1585 result.append(buffer); 1586 hwc.dump(result, buffer, SIZE); 1587 1588 /* 1589 * Dump gralloc state 1590 */ 1591 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1592 alloc.dump(result); 1593 hw.dump(result); 1594 1595 if (locked) { 1596 mStateLock.unlock(); 1597 } 1598 } 1599 write(fd, result.string(), result.size()); 1600 return NO_ERROR; 1601} 1602 1603status_t SurfaceFlinger::onTransact( 1604 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1605{ 1606 switch (code) { 1607 case CREATE_CONNECTION: 1608 case SET_TRANSACTION_STATE: 1609 case SET_ORIENTATION: 1610 case FREEZE_DISPLAY: 1611 case UNFREEZE_DISPLAY: 1612 case BOOT_FINISHED: 1613 case TURN_ELECTRON_BEAM_OFF: 1614 case TURN_ELECTRON_BEAM_ON: 1615 { 1616 // codes that require permission check 1617 IPCThreadState* ipc = IPCThreadState::self(); 1618 const int pid = ipc->getCallingPid(); 1619 const int uid = ipc->getCallingUid(); 1620 if ((uid != AID_GRAPHICS) && 1621 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1622 LOGE("Permission Denial: " 1623 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1624 return PERMISSION_DENIED; 1625 } 1626 break; 1627 } 1628 case CAPTURE_SCREEN: 1629 { 1630 // codes that require permission check 1631 IPCThreadState* ipc = IPCThreadState::self(); 1632 const int pid = ipc->getCallingPid(); 1633 const int uid = ipc->getCallingUid(); 1634 if ((uid != AID_GRAPHICS) && 1635 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1636 LOGE("Permission Denial: " 1637 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1638 return PERMISSION_DENIED; 1639 } 1640 break; 1641 } 1642 } 1643 1644 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1645 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1646 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1647 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1648 IPCThreadState* ipc = IPCThreadState::self(); 1649 const int pid = ipc->getCallingPid(); 1650 const int uid = ipc->getCallingUid(); 1651 LOGE("Permission Denial: " 1652 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1653 return PERMISSION_DENIED; 1654 } 1655 int n; 1656 switch (code) { 1657 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1658 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1659 return NO_ERROR; 1660 case 1002: // SHOW_UPDATES 1661 n = data.readInt32(); 1662 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1663 invalidateHwcGeometry(); 1664 repaintEverything(); 1665 return NO_ERROR; 1666 case 1003: // SHOW_BACKGROUND 1667 n = data.readInt32(); 1668 mDebugBackground = n ? 1 : 0; 1669 return NO_ERROR; 1670 case 1004:{ // repaint everything 1671 repaintEverything(); 1672 return NO_ERROR; 1673 } 1674 case 1005:{ // force transaction 1675 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1676 return NO_ERROR; 1677 } 1678 case 1006:{ // enable/disable GraphicLog 1679 int enabled = data.readInt32(); 1680 GraphicLog::getInstance().setEnabled(enabled); 1681 return NO_ERROR; 1682 } 1683 case 1007: // set mFreezeCount 1684 mFreezeCount = data.readInt32(); 1685 mFreezeDisplayTime = 0; 1686 return NO_ERROR; 1687 case 1008: // toggle use of hw composer 1688 n = data.readInt32(); 1689 mDebugDisableHWC = n ? 1 : 0; 1690 invalidateHwcGeometry(); 1691 repaintEverything(); 1692 return NO_ERROR; 1693 case 1009: // toggle use of transform hint 1694 n = data.readInt32(); 1695 mDebugDisableTransformHint = n ? 1 : 0; 1696 invalidateHwcGeometry(); 1697 repaintEverything(); 1698 return NO_ERROR; 1699 case 1010: // interrogate. 1700 reply->writeInt32(0); 1701 reply->writeInt32(0); 1702 reply->writeInt32(mDebugRegion); 1703 reply->writeInt32(mDebugBackground); 1704 return NO_ERROR; 1705 case 1013: { 1706 Mutex::Autolock _l(mStateLock); 1707 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1708 reply->writeInt32(hw.getPageFlipCount()); 1709 } 1710 return NO_ERROR; 1711 } 1712 } 1713 return err; 1714} 1715 1716void SurfaceFlinger::repaintEverything() { 1717 Mutex::Autolock _l(mStateLock); 1718 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1719 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1720 signalEvent(); 1721} 1722 1723// --------------------------------------------------------------------------- 1724 1725status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1726 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1727{ 1728 if (!GLExtensions::getInstance().haveFramebufferObject()) 1729 return INVALID_OPERATION; 1730 1731 // get screen geometry 1732 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1733 const uint32_t hw_w = hw.getWidth(); 1734 const uint32_t hw_h = hw.getHeight(); 1735 GLfloat u = 1; 1736 GLfloat v = 1; 1737 1738 // make sure to clear all GL error flags 1739 while ( glGetError() != GL_NO_ERROR ) ; 1740 1741 // create a FBO 1742 GLuint name, tname; 1743 glGenTextures(1, &tname); 1744 glBindTexture(GL_TEXTURE_2D, tname); 1745 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1746 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1747 if (glGetError() != GL_NO_ERROR) { 1748 while ( glGetError() != GL_NO_ERROR ) ; 1749 GLint tw = (2 << (31 - clz(hw_w))); 1750 GLint th = (2 << (31 - clz(hw_h))); 1751 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1752 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1753 u = GLfloat(hw_w) / tw; 1754 v = GLfloat(hw_h) / th; 1755 } 1756 glGenFramebuffersOES(1, &name); 1757 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1758 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1759 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1760 1761 // redraw the screen entirely... 1762 glClearColor(0,0,0,1); 1763 glClear(GL_COLOR_BUFFER_BIT); 1764 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1765 const size_t count = layers.size(); 1766 for (size_t i=0 ; i<count ; ++i) { 1767 const sp<LayerBase>& layer(layers[i]); 1768 layer->drawForSreenShot(); 1769 } 1770 1771 // back to main framebuffer 1772 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1773 glDisable(GL_SCISSOR_TEST); 1774 glDeleteFramebuffersOES(1, &name); 1775 1776 *textureName = tname; 1777 *uOut = u; 1778 *vOut = v; 1779 return NO_ERROR; 1780} 1781 1782// --------------------------------------------------------------------------- 1783 1784status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1785{ 1786 status_t result = PERMISSION_DENIED; 1787 1788 if (!GLExtensions::getInstance().haveFramebufferObject()) 1789 return INVALID_OPERATION; 1790 1791 // get screen geometry 1792 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1793 const uint32_t hw_w = hw.getWidth(); 1794 const uint32_t hw_h = hw.getHeight(); 1795 const Region screenBounds(hw.bounds()); 1796 1797 GLfloat u, v; 1798 GLuint tname; 1799 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1800 if (result != NO_ERROR) { 1801 return result; 1802 } 1803 1804 GLfloat vtx[8]; 1805 const GLfloat texCoords[4][2] = { {0,1}, {0,1-v}, {u,1-v}, {u,1} }; 1806 glBindTexture(GL_TEXTURE_2D, tname); 1807 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1808 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1809 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1810 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1811 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1812 glVertexPointer(2, GL_FLOAT, 0, vtx); 1813 1814 /* 1815 * Texture coordinate mapping 1816 * 1817 * u 1818 * 1 +----------+---+ 1819 * | | | | image is inverted 1820 * | V | | w.r.t. the texture 1821 * 1-v +----------+ | coordinates 1822 * | | 1823 * | | 1824 * | | 1825 * 0 +--------------+ 1826 * 0 1 1827 * 1828 */ 1829 1830 class s_curve_interpolator { 1831 const float nbFrames, s, v; 1832 public: 1833 s_curve_interpolator(int nbFrames, float s) 1834 : nbFrames(1.0f / (nbFrames-1)), s(s), 1835 v(1.0f + expf(-s + 0.5f*s)) { 1836 } 1837 float operator()(int f) { 1838 const float x = f * nbFrames; 1839 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1840 } 1841 }; 1842 1843 class v_stretch { 1844 const GLfloat hw_w, hw_h; 1845 public: 1846 v_stretch(uint32_t hw_w, uint32_t hw_h) 1847 : hw_w(hw_w), hw_h(hw_h) { 1848 } 1849 void operator()(GLfloat* vtx, float v) { 1850 const GLfloat w = hw_w + (hw_w * v); 1851 const GLfloat h = hw_h - (hw_h * v); 1852 const GLfloat x = (hw_w - w) * 0.5f; 1853 const GLfloat y = (hw_h - h) * 0.5f; 1854 vtx[0] = x; vtx[1] = y; 1855 vtx[2] = x; vtx[3] = y + h; 1856 vtx[4] = x + w; vtx[5] = y + h; 1857 vtx[6] = x + w; vtx[7] = y; 1858 } 1859 }; 1860 1861 class h_stretch { 1862 const GLfloat hw_w, hw_h; 1863 public: 1864 h_stretch(uint32_t hw_w, uint32_t hw_h) 1865 : hw_w(hw_w), hw_h(hw_h) { 1866 } 1867 void operator()(GLfloat* vtx, float v) { 1868 const GLfloat w = hw_w - (hw_w * v); 1869 const GLfloat h = 1.0f; 1870 const GLfloat x = (hw_w - w) * 0.5f; 1871 const GLfloat y = (hw_h - h) * 0.5f; 1872 vtx[0] = x; vtx[1] = y; 1873 vtx[2] = x; vtx[3] = y + h; 1874 vtx[4] = x + w; vtx[5] = y + h; 1875 vtx[6] = x + w; vtx[7] = y; 1876 } 1877 }; 1878 1879 // the full animation is 24 frames 1880 char value[PROPERTY_VALUE_MAX]; 1881 property_get("debug.sf.electron_frames", value, "24"); 1882 int nbFrames = (atoi(value) + 1) >> 1; 1883 if (nbFrames <= 0) // just in case 1884 nbFrames = 24; 1885 1886 s_curve_interpolator itr(nbFrames, 7.5f); 1887 s_curve_interpolator itg(nbFrames, 8.0f); 1888 s_curve_interpolator itb(nbFrames, 8.5f); 1889 1890 v_stretch vverts(hw_w, hw_h); 1891 glEnable(GL_BLEND); 1892 glBlendFunc(GL_ONE, GL_ONE); 1893 for (int i=0 ; i<nbFrames ; i++) { 1894 float x, y, w, h; 1895 const float vr = itr(i); 1896 const float vg = itg(i); 1897 const float vb = itb(i); 1898 1899 // clear screen 1900 glColorMask(1,1,1,1); 1901 glClear(GL_COLOR_BUFFER_BIT); 1902 glEnable(GL_TEXTURE_2D); 1903 1904 // draw the red plane 1905 vverts(vtx, vr); 1906 glColorMask(1,0,0,1); 1907 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1908 1909 // draw the green plane 1910 vverts(vtx, vg); 1911 glColorMask(0,1,0,1); 1912 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1913 1914 // draw the blue plane 1915 vverts(vtx, vb); 1916 glColorMask(0,0,1,1); 1917 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1918 1919 // draw the white highlight (we use the last vertices) 1920 glDisable(GL_TEXTURE_2D); 1921 glColorMask(1,1,1,1); 1922 glColor4f(vg, vg, vg, 1); 1923 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1924 hw.flip(screenBounds); 1925 } 1926 1927 h_stretch hverts(hw_w, hw_h); 1928 glDisable(GL_BLEND); 1929 glDisable(GL_TEXTURE_2D); 1930 glColorMask(1,1,1,1); 1931 for (int i=0 ; i<nbFrames ; i++) { 1932 const float v = itg(i); 1933 hverts(vtx, v); 1934 glClear(GL_COLOR_BUFFER_BIT); 1935 glColor4f(1-v, 1-v, 1-v, 1); 1936 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1937 hw.flip(screenBounds); 1938 } 1939 1940 glColorMask(1,1,1,1); 1941 glEnable(GL_SCISSOR_TEST); 1942 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1943 glDeleteTextures(1, &tname); 1944 glDisable(GL_TEXTURE_2D); 1945 return NO_ERROR; 1946} 1947 1948status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1949{ 1950 status_t result = PERMISSION_DENIED; 1951 1952 if (!GLExtensions::getInstance().haveFramebufferObject()) 1953 return INVALID_OPERATION; 1954 1955 1956 // get screen geometry 1957 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1958 const uint32_t hw_w = hw.getWidth(); 1959 const uint32_t hw_h = hw.getHeight(); 1960 const Region screenBounds(hw.bounds()); 1961 1962 GLfloat u, v; 1963 GLuint tname; 1964 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1965 if (result != NO_ERROR) { 1966 return result; 1967 } 1968 1969 // back to main framebuffer 1970 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1971 glDisable(GL_SCISSOR_TEST); 1972 1973 GLfloat vtx[8]; 1974 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1975 glBindTexture(GL_TEXTURE_2D, tname); 1976 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 1977 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1978 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1979 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1980 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1981 glVertexPointer(2, GL_FLOAT, 0, vtx); 1982 1983 class s_curve_interpolator { 1984 const float nbFrames, s, v; 1985 public: 1986 s_curve_interpolator(int nbFrames, float s) 1987 : nbFrames(1.0f / (nbFrames-1)), s(s), 1988 v(1.0f + expf(-s + 0.5f*s)) { 1989 } 1990 float operator()(int f) { 1991 const float x = f * nbFrames; 1992 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1993 } 1994 }; 1995 1996 class v_stretch { 1997 const GLfloat hw_w, hw_h; 1998 public: 1999 v_stretch(uint32_t hw_w, uint32_t hw_h) 2000 : hw_w(hw_w), hw_h(hw_h) { 2001 } 2002 void operator()(GLfloat* vtx, float v) { 2003 const GLfloat w = hw_w + (hw_w * v); 2004 const GLfloat h = hw_h - (hw_h * v); 2005 const GLfloat x = (hw_w - w) * 0.5f; 2006 const GLfloat y = (hw_h - h) * 0.5f; 2007 vtx[0] = x; vtx[1] = y; 2008 vtx[2] = x; vtx[3] = y + h; 2009 vtx[4] = x + w; vtx[5] = y + h; 2010 vtx[6] = x + w; vtx[7] = y; 2011 } 2012 }; 2013 2014 class h_stretch { 2015 const GLfloat hw_w, hw_h; 2016 public: 2017 h_stretch(uint32_t hw_w, uint32_t hw_h) 2018 : hw_w(hw_w), hw_h(hw_h) { 2019 } 2020 void operator()(GLfloat* vtx, float v) { 2021 const GLfloat w = hw_w - (hw_w * v); 2022 const GLfloat h = 1.0f; 2023 const GLfloat x = (hw_w - w) * 0.5f; 2024 const GLfloat y = (hw_h - h) * 0.5f; 2025 vtx[0] = x; vtx[1] = y; 2026 vtx[2] = x; vtx[3] = y + h; 2027 vtx[4] = x + w; vtx[5] = y + h; 2028 vtx[6] = x + w; vtx[7] = y; 2029 } 2030 }; 2031 2032 // the full animation is 12 frames 2033 int nbFrames = 8; 2034 s_curve_interpolator itr(nbFrames, 7.5f); 2035 s_curve_interpolator itg(nbFrames, 8.0f); 2036 s_curve_interpolator itb(nbFrames, 8.5f); 2037 2038 h_stretch hverts(hw_w, hw_h); 2039 glDisable(GL_BLEND); 2040 glDisable(GL_TEXTURE_2D); 2041 glColorMask(1,1,1,1); 2042 for (int i=nbFrames-1 ; i>=0 ; i--) { 2043 const float v = itg(i); 2044 hverts(vtx, v); 2045 glClear(GL_COLOR_BUFFER_BIT); 2046 glColor4f(1-v, 1-v, 1-v, 1); 2047 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2048 hw.flip(screenBounds); 2049 } 2050 2051 nbFrames = 4; 2052 v_stretch vverts(hw_w, hw_h); 2053 glEnable(GL_BLEND); 2054 glBlendFunc(GL_ONE, GL_ONE); 2055 for (int i=nbFrames-1 ; i>=0 ; i--) { 2056 float x, y, w, h; 2057 const float vr = itr(i); 2058 const float vg = itg(i); 2059 const float vb = itb(i); 2060 2061 // clear screen 2062 glColorMask(1,1,1,1); 2063 glClear(GL_COLOR_BUFFER_BIT); 2064 glEnable(GL_TEXTURE_2D); 2065 2066 // draw the red plane 2067 vverts(vtx, vr); 2068 glColorMask(1,0,0,1); 2069 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2070 2071 // draw the green plane 2072 vverts(vtx, vg); 2073 glColorMask(0,1,0,1); 2074 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2075 2076 // draw the blue plane 2077 vverts(vtx, vb); 2078 glColorMask(0,0,1,1); 2079 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2080 2081 hw.flip(screenBounds); 2082 } 2083 2084 glColorMask(1,1,1,1); 2085 glEnable(GL_SCISSOR_TEST); 2086 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2087 glDeleteTextures(1, &tname); 2088 glDisable(GL_TEXTURE_2D); 2089 2090 return NO_ERROR; 2091} 2092 2093// --------------------------------------------------------------------------- 2094 2095status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2096{ 2097 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2098 if (!hw.canDraw()) { 2099 // we're already off 2100 return NO_ERROR; 2101 } 2102 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2103 electronBeamOffAnimationImplLocked(); 2104 } 2105 2106 // always clear the whole screen at the end of the animation 2107 glClearColor(0,0,0,1); 2108 glDisable(GL_SCISSOR_TEST); 2109 glClear(GL_COLOR_BUFFER_BIT); 2110 glEnable(GL_SCISSOR_TEST); 2111 hw.flip( Region(hw.bounds()) ); 2112 2113 hw.setCanDraw(false); 2114 return NO_ERROR; 2115} 2116 2117status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2118{ 2119 class MessageTurnElectronBeamOff : public MessageBase { 2120 SurfaceFlinger* flinger; 2121 int32_t mode; 2122 status_t result; 2123 public: 2124 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2125 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2126 } 2127 status_t getResult() const { 2128 return result; 2129 } 2130 virtual bool handler() { 2131 Mutex::Autolock _l(flinger->mStateLock); 2132 result = flinger->turnElectronBeamOffImplLocked(mode); 2133 return true; 2134 } 2135 }; 2136 2137 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2138 status_t res = postMessageSync(msg); 2139 if (res == NO_ERROR) { 2140 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2141 2142 // work-around: when the power-manager calls us we activate the 2143 // animation. eventually, the "on" animation will be called 2144 // by the power-manager itself 2145 mElectronBeamAnimationMode = mode; 2146 } 2147 return res; 2148} 2149 2150// --------------------------------------------------------------------------- 2151 2152status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2153{ 2154 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2155 if (hw.canDraw()) { 2156 // we're already on 2157 return NO_ERROR; 2158 } 2159 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2160 electronBeamOnAnimationImplLocked(); 2161 } 2162 hw.setCanDraw(true); 2163 2164 // make sure to redraw the whole screen when the animation is done 2165 mDirtyRegion.set(hw.bounds()); 2166 signalEvent(); 2167 2168 return NO_ERROR; 2169} 2170 2171status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2172{ 2173 class MessageTurnElectronBeamOn : public MessageBase { 2174 SurfaceFlinger* flinger; 2175 int32_t mode; 2176 status_t result; 2177 public: 2178 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2179 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2180 } 2181 status_t getResult() const { 2182 return result; 2183 } 2184 virtual bool handler() { 2185 Mutex::Autolock _l(flinger->mStateLock); 2186 result = flinger->turnElectronBeamOnImplLocked(mode); 2187 return true; 2188 } 2189 }; 2190 2191 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2192 return NO_ERROR; 2193} 2194 2195// --------------------------------------------------------------------------- 2196 2197status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2198 sp<IMemoryHeap>* heap, 2199 uint32_t* w, uint32_t* h, PixelFormat* f, 2200 uint32_t sw, uint32_t sh, 2201 uint32_t minLayerZ, uint32_t maxLayerZ) 2202{ 2203 status_t result = PERMISSION_DENIED; 2204 2205 // only one display supported for now 2206 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2207 return BAD_VALUE; 2208 2209 // make sure none of the layers are protected 2210 const LayerVector& layers(mDrawingState.layersSortedByZ); 2211 const size_t count = layers.size(); 2212 for (size_t i=0 ; i<count ; ++i) { 2213 const sp<LayerBase>& layer(layers[i]); 2214 const uint32_t flags = layer->drawingState().flags; 2215 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2216 const uint32_t z = layer->drawingState().z; 2217 if (z >= minLayerZ && z <= maxLayerZ) { 2218 if (layer->isProtected()) { 2219 return INVALID_OPERATION; 2220 } 2221 } 2222 } 2223 } 2224 2225 if (!GLExtensions::getInstance().haveFramebufferObject()) 2226 return INVALID_OPERATION; 2227 2228 // get screen geometry 2229 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2230 const uint32_t hw_w = hw.getWidth(); 2231 const uint32_t hw_h = hw.getHeight(); 2232 2233 if ((sw > hw_w) || (sh > hw_h)) 2234 return BAD_VALUE; 2235 2236 sw = (!sw) ? hw_w : sw; 2237 sh = (!sh) ? hw_h : sh; 2238 const size_t size = sw * sh * 4; 2239 2240 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2241 // sw, sh, minLayerZ, maxLayerZ); 2242 2243 // make sure to clear all GL error flags 2244 while ( glGetError() != GL_NO_ERROR ) ; 2245 2246 // create a FBO 2247 GLuint name, tname; 2248 glGenRenderbuffersOES(1, &tname); 2249 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2250 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2251 glGenFramebuffersOES(1, &name); 2252 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2253 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2254 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2255 2256 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2257 2258 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2259 2260 // invert everything, b/c glReadPixel() below will invert the FB 2261 glViewport(0, 0, sw, sh); 2262 glScissor(0, 0, sw, sh); 2263 glEnable(GL_SCISSOR_TEST); 2264 glMatrixMode(GL_PROJECTION); 2265 glPushMatrix(); 2266 glLoadIdentity(); 2267 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2268 glMatrixMode(GL_MODELVIEW); 2269 2270 // redraw the screen entirely... 2271 glClearColor(0,0,0,1); 2272 glClear(GL_COLOR_BUFFER_BIT); 2273 2274 for (size_t i=0 ; i<count ; ++i) { 2275 const sp<LayerBase>& layer(layers[i]); 2276 const uint32_t flags = layer->drawingState().flags; 2277 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2278 const uint32_t z = layer->drawingState().z; 2279 if (z >= minLayerZ && z <= maxLayerZ) { 2280 layer->drawForSreenShot(); 2281 } 2282 } 2283 } 2284 2285 // XXX: this is needed on tegra 2286 glEnable(GL_SCISSOR_TEST); 2287 glScissor(0, 0, sw, sh); 2288 2289 // check for errors and return screen capture 2290 if (glGetError() != GL_NO_ERROR) { 2291 // error while rendering 2292 result = INVALID_OPERATION; 2293 } else { 2294 // allocate shared memory large enough to hold the 2295 // screen capture 2296 sp<MemoryHeapBase> base( 2297 new MemoryHeapBase(size, 0, "screen-capture") ); 2298 void* const ptr = base->getBase(); 2299 if (ptr) { 2300 // capture the screen with glReadPixels() 2301 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2302 if (glGetError() == GL_NO_ERROR) { 2303 *heap = base; 2304 *w = sw; 2305 *h = sh; 2306 *f = PIXEL_FORMAT_RGBA_8888; 2307 result = NO_ERROR; 2308 } 2309 } else { 2310 result = NO_MEMORY; 2311 } 2312 } 2313 glEnable(GL_SCISSOR_TEST); 2314 glViewport(0, 0, hw_w, hw_h); 2315 glMatrixMode(GL_PROJECTION); 2316 glPopMatrix(); 2317 glMatrixMode(GL_MODELVIEW); 2318 } else { 2319 result = BAD_VALUE; 2320 } 2321 2322 // release FBO resources 2323 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2324 glDeleteRenderbuffersOES(1, &tname); 2325 glDeleteFramebuffersOES(1, &name); 2326 2327 hw.compositionComplete(); 2328 2329 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2330 2331 return result; 2332} 2333 2334 2335status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2336 sp<IMemoryHeap>* heap, 2337 uint32_t* width, uint32_t* height, PixelFormat* format, 2338 uint32_t sw, uint32_t sh, 2339 uint32_t minLayerZ, uint32_t maxLayerZ) 2340{ 2341 // only one display supported for now 2342 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2343 return BAD_VALUE; 2344 2345 if (!GLExtensions::getInstance().haveFramebufferObject()) 2346 return INVALID_OPERATION; 2347 2348 class MessageCaptureScreen : public MessageBase { 2349 SurfaceFlinger* flinger; 2350 DisplayID dpy; 2351 sp<IMemoryHeap>* heap; 2352 uint32_t* w; 2353 uint32_t* h; 2354 PixelFormat* f; 2355 uint32_t sw; 2356 uint32_t sh; 2357 uint32_t minLayerZ; 2358 uint32_t maxLayerZ; 2359 status_t result; 2360 public: 2361 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2362 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2363 uint32_t sw, uint32_t sh, 2364 uint32_t minLayerZ, uint32_t maxLayerZ) 2365 : flinger(flinger), dpy(dpy), 2366 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2367 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2368 result(PERMISSION_DENIED) 2369 { 2370 } 2371 status_t getResult() const { 2372 return result; 2373 } 2374 virtual bool handler() { 2375 Mutex::Autolock _l(flinger->mStateLock); 2376 2377 // if we have secure windows, never allow the screen capture 2378 if (flinger->mSecureFrameBuffer) 2379 return true; 2380 2381 result = flinger->captureScreenImplLocked(dpy, 2382 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2383 2384 return true; 2385 } 2386 }; 2387 2388 sp<MessageBase> msg = new MessageCaptureScreen(this, 2389 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2390 status_t res = postMessageSync(msg); 2391 if (res == NO_ERROR) { 2392 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2393 } 2394 return res; 2395} 2396 2397// --------------------------------------------------------------------------- 2398 2399sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2400{ 2401 sp<Layer> result; 2402 Mutex::Autolock _l(mStateLock); 2403 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2404 return result; 2405} 2406 2407// --------------------------------------------------------------------------- 2408 2409Client::Client(const sp<SurfaceFlinger>& flinger) 2410 : mFlinger(flinger), mNameGenerator(1) 2411{ 2412} 2413 2414Client::~Client() 2415{ 2416 const size_t count = mLayers.size(); 2417 for (size_t i=0 ; i<count ; i++) { 2418 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2419 if (layer != 0) { 2420 mFlinger->removeLayer(layer); 2421 } 2422 } 2423} 2424 2425status_t Client::initCheck() const { 2426 return NO_ERROR; 2427} 2428 2429size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2430{ 2431 Mutex::Autolock _l(mLock); 2432 size_t name = mNameGenerator++; 2433 mLayers.add(name, layer); 2434 return name; 2435} 2436 2437void Client::detachLayer(const LayerBaseClient* layer) 2438{ 2439 Mutex::Autolock _l(mLock); 2440 // we do a linear search here, because this doesn't happen often 2441 const size_t count = mLayers.size(); 2442 for (size_t i=0 ; i<count ; i++) { 2443 if (mLayers.valueAt(i) == layer) { 2444 mLayers.removeItemsAt(i, 1); 2445 break; 2446 } 2447 } 2448} 2449sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2450{ 2451 Mutex::Autolock _l(mLock); 2452 sp<LayerBaseClient> lbc; 2453 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2454 if (layer != 0) { 2455 lbc = layer.promote(); 2456 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2457 } 2458 return lbc; 2459} 2460 2461 2462status_t Client::onTransact( 2463 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2464{ 2465 // these must be checked 2466 IPCThreadState* ipc = IPCThreadState::self(); 2467 const int pid = ipc->getCallingPid(); 2468 const int uid = ipc->getCallingUid(); 2469 const int self_pid = getpid(); 2470 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2471 // we're called from a different process, do the real check 2472 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2473 { 2474 LOGE("Permission Denial: " 2475 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2476 return PERMISSION_DENIED; 2477 } 2478 } 2479 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2480} 2481 2482 2483sp<ISurface> Client::createSurface( 2484 ISurfaceComposerClient::surface_data_t* params, 2485 const String8& name, 2486 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2487 uint32_t flags) 2488{ 2489 /* 2490 * createSurface must be called from the GL thread so that it can 2491 * have access to the GL context. 2492 */ 2493 2494 class MessageCreateSurface : public MessageBase { 2495 sp<ISurface> result; 2496 SurfaceFlinger* flinger; 2497 ISurfaceComposerClient::surface_data_t* params; 2498 Client* client; 2499 const String8& name; 2500 DisplayID display; 2501 uint32_t w, h; 2502 PixelFormat format; 2503 uint32_t flags; 2504 public: 2505 MessageCreateSurface(SurfaceFlinger* flinger, 2506 ISurfaceComposerClient::surface_data_t* params, 2507 const String8& name, Client* client, 2508 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2509 uint32_t flags) 2510 : flinger(flinger), params(params), client(client), name(name), 2511 display(display), w(w), h(h), format(format), flags(flags) 2512 { 2513 } 2514 sp<ISurface> getResult() const { return result; } 2515 virtual bool handler() { 2516 result = flinger->createSurface(params, name, client, 2517 display, w, h, format, flags); 2518 return true; 2519 } 2520 }; 2521 2522 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2523 params, name, this, display, w, h, format, flags); 2524 mFlinger->postMessageSync(msg); 2525 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2526} 2527status_t Client::destroySurface(SurfaceID sid) { 2528 return mFlinger->removeSurface(this, sid); 2529} 2530 2531// --------------------------------------------------------------------------- 2532 2533GraphicBufferAlloc::GraphicBufferAlloc() {} 2534 2535GraphicBufferAlloc::~GraphicBufferAlloc() {} 2536 2537sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2538 PixelFormat format, uint32_t usage, status_t* error) { 2539 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2540 status_t err = graphicBuffer->initCheck(); 2541 *error = err; 2542 if (err != 0 || graphicBuffer->handle == 0) { 2543 if (err == NO_MEMORY) { 2544 GraphicBuffer::dumpAllocationsToSystemLog(); 2545 } 2546 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2547 "failed (%s), handle=%p", 2548 w, h, strerror(-err), graphicBuffer->handle); 2549 return 0; 2550 } 2551 return graphicBuffer; 2552} 2553 2554// --------------------------------------------------------------------------- 2555 2556GraphicPlane::GraphicPlane() 2557 : mHw(0) 2558{ 2559} 2560 2561GraphicPlane::~GraphicPlane() { 2562 delete mHw; 2563} 2564 2565bool GraphicPlane::initialized() const { 2566 return mHw ? true : false; 2567} 2568 2569int GraphicPlane::getWidth() const { 2570 return mWidth; 2571} 2572 2573int GraphicPlane::getHeight() const { 2574 return mHeight; 2575} 2576 2577void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2578{ 2579 mHw = hw; 2580 2581 // initialize the display orientation transform. 2582 // it's a constant that should come from the display driver. 2583 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2584 char property[PROPERTY_VALUE_MAX]; 2585 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2586 //displayOrientation 2587 switch (atoi(property)) { 2588 case 90: 2589 displayOrientation = ISurfaceComposer::eOrientation90; 2590 break; 2591 case 270: 2592 displayOrientation = ISurfaceComposer::eOrientation270; 2593 break; 2594 } 2595 } 2596 2597 const float w = hw->getWidth(); 2598 const float h = hw->getHeight(); 2599 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2600 &mDisplayTransform); 2601 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2602 mDisplayWidth = h; 2603 mDisplayHeight = w; 2604 } else { 2605 mDisplayWidth = w; 2606 mDisplayHeight = h; 2607 } 2608 2609 setOrientation(ISurfaceComposer::eOrientationDefault); 2610} 2611 2612status_t GraphicPlane::orientationToTransfrom( 2613 int orientation, int w, int h, Transform* tr) 2614{ 2615 uint32_t flags = 0; 2616 switch (orientation) { 2617 case ISurfaceComposer::eOrientationDefault: 2618 flags = Transform::ROT_0; 2619 break; 2620 case ISurfaceComposer::eOrientation90: 2621 flags = Transform::ROT_90; 2622 break; 2623 case ISurfaceComposer::eOrientation180: 2624 flags = Transform::ROT_180; 2625 break; 2626 case ISurfaceComposer::eOrientation270: 2627 flags = Transform::ROT_270; 2628 break; 2629 default: 2630 return BAD_VALUE; 2631 } 2632 tr->set(flags, w, h); 2633 return NO_ERROR; 2634} 2635 2636status_t GraphicPlane::setOrientation(int orientation) 2637{ 2638 // If the rotation can be handled in hardware, this is where 2639 // the magic should happen. 2640 2641 const DisplayHardware& hw(displayHardware()); 2642 const float w = mDisplayWidth; 2643 const float h = mDisplayHeight; 2644 mWidth = int(w); 2645 mHeight = int(h); 2646 2647 Transform orientationTransform; 2648 GraphicPlane::orientationToTransfrom(orientation, w, h, 2649 &orientationTransform); 2650 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2651 mWidth = int(h); 2652 mHeight = int(w); 2653 } 2654 2655 mOrientation = orientation; 2656 mGlobalTransform = mDisplayTransform * orientationTransform; 2657 return NO_ERROR; 2658} 2659 2660const DisplayHardware& GraphicPlane::displayHardware() const { 2661 return *mHw; 2662} 2663 2664DisplayHardware& GraphicPlane::editDisplayHardware() { 2665 return *mHw; 2666} 2667 2668const Transform& GraphicPlane::transform() const { 2669 return mGlobalTransform; 2670} 2671 2672EGLDisplay GraphicPlane::getEGLDisplay() const { 2673 return mHw->getEGLDisplay(); 2674} 2675 2676// --------------------------------------------------------------------------- 2677 2678}; // namespace android 2679