SurfaceFlinger.cpp revision 134f0422866e8985188ed10dfbdcb8e6c34b87f7
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 36#include <utils/String8.h> 37#include <utils/String16.h> 38#include <utils/StopWatch.h> 39 40#include <ui/GraphicBufferAllocator.h> 41#include <ui/GraphicLog.h> 42#include <ui/PixelFormat.h> 43 44#include <pixelflinger/pixelflinger.h> 45#include <GLES/gl.h> 46 47#include "clz.h" 48#include "GLExtensions.h" 49#include "Layer.h" 50#include "LayerDim.h" 51#include "SurfaceFlinger.h" 52 53#include "DisplayHardware/DisplayHardware.h" 54#include "DisplayHardware/HWComposer.h" 55 56/* ideally AID_GRAPHICS would be in a semi-public header 57 * or there would be a way to map a user/group name to its id 58 */ 59#ifndef AID_GRAPHICS 60#define AID_GRAPHICS 1003 61#endif 62 63#define DISPLAY_COUNT 1 64 65namespace android { 66// --------------------------------------------------------------------------- 67 68SurfaceFlinger::SurfaceFlinger() 69 : BnSurfaceComposer(), Thread(false), 70 mTransactionFlags(0), 71 mTransactionCount(0), 72 mResizeTransationPending(false), 73 mLayersRemoved(false), 74 mBootTime(systemTime()), 75 mHardwareTest("android.permission.HARDWARE_TEST"), 76 mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"), 77 mReadFramebuffer("android.permission.READ_FRAME_BUFFER"), 78 mDump("android.permission.DUMP"), 79 mVisibleRegionsDirty(false), 80 mHwWorkListDirty(false), 81 mDeferReleaseConsole(false), 82 mFreezeDisplay(false), 83 mElectronBeamAnimationMode(0), 84 mFreezeCount(0), 85 mFreezeDisplayTime(0), 86 mDebugRegion(0), 87 mDebugBackground(0), 88 mDebugDisableHWC(0), 89 mDebugInSwapBuffers(0), 90 mLastSwapBufferTime(0), 91 mDebugInTransaction(0), 92 mLastTransactionTime(0), 93 mBootFinished(false), 94 mConsoleSignals(0), 95 mSecureFrameBuffer(0) 96{ 97 init(); 98} 99 100void SurfaceFlinger::init() 101{ 102 LOGI("SurfaceFlinger is starting"); 103 104 // debugging stuff... 105 char value[PROPERTY_VALUE_MAX]; 106 property_get("debug.sf.showupdates", value, "0"); 107 mDebugRegion = atoi(value); 108 property_get("debug.sf.showbackground", value, "0"); 109 mDebugBackground = atoi(value); 110 111 LOGI_IF(mDebugRegion, "showupdates enabled"); 112 LOGI_IF(mDebugBackground, "showbackground enabled"); 113} 114 115SurfaceFlinger::~SurfaceFlinger() 116{ 117 glDeleteTextures(1, &mWormholeTexName); 118} 119 120sp<IMemoryHeap> SurfaceFlinger::getCblk() const 121{ 122 return mServerHeap; 123} 124 125sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 126{ 127 sp<ISurfaceComposerClient> bclient; 128 sp<Client> client(new Client(this)); 129 status_t err = client->initCheck(); 130 if (err == NO_ERROR) { 131 bclient = client; 132 } 133 return bclient; 134} 135 136sp<ISurfaceComposerClient> SurfaceFlinger::createClientConnection() 137{ 138 sp<ISurfaceComposerClient> bclient; 139 sp<UserClient> client(new UserClient(this)); 140 status_t err = client->initCheck(); 141 if (err == NO_ERROR) { 142 bclient = client; 143 } 144 return bclient; 145} 146 147sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 148{ 149 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 150 return gba; 151} 152 153const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 154{ 155 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 156 const GraphicPlane& plane(mGraphicPlanes[dpy]); 157 return plane; 158} 159 160GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 161{ 162 return const_cast<GraphicPlane&>( 163 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 164} 165 166void SurfaceFlinger::bootFinished() 167{ 168 const nsecs_t now = systemTime(); 169 const nsecs_t duration = now - mBootTime; 170 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 171 mBootFinished = true; 172 property_set("ctl.stop", "bootanim"); 173} 174 175void SurfaceFlinger::onFirstRef() 176{ 177 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 178 179 // Wait for the main thread to be done with its initialization 180 mReadyToRunBarrier.wait(); 181} 182 183static inline uint16_t pack565(int r, int g, int b) { 184 return (r<<11)|(g<<5)|b; 185} 186 187status_t SurfaceFlinger::readyToRun() 188{ 189 LOGI( "SurfaceFlinger's main thread ready to run. " 190 "Initializing graphics H/W..."); 191 192 // we only support one display currently 193 int dpy = 0; 194 195 { 196 // initialize the main display 197 GraphicPlane& plane(graphicPlane(dpy)); 198 DisplayHardware* const hw = new DisplayHardware(this, dpy); 199 plane.setDisplayHardware(hw); 200 } 201 202 // create the shared control-block 203 mServerHeap = new MemoryHeapBase(4096, 204 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 205 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 206 207 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 208 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 209 210 new(mServerCblk) surface_flinger_cblk_t; 211 212 // initialize primary screen 213 // (other display should be initialized in the same manner, but 214 // asynchronously, as they could come and go. None of this is supported 215 // yet). 216 const GraphicPlane& plane(graphicPlane(dpy)); 217 const DisplayHardware& hw = plane.displayHardware(); 218 const uint32_t w = hw.getWidth(); 219 const uint32_t h = hw.getHeight(); 220 const uint32_t f = hw.getFormat(); 221 hw.makeCurrent(); 222 223 // initialize the shared control block 224 mServerCblk->connected |= 1<<dpy; 225 display_cblk_t* dcblk = mServerCblk->displays + dpy; 226 memset(dcblk, 0, sizeof(display_cblk_t)); 227 dcblk->w = plane.getWidth(); 228 dcblk->h = plane.getHeight(); 229 dcblk->format = f; 230 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 231 dcblk->xdpi = hw.getDpiX(); 232 dcblk->ydpi = hw.getDpiY(); 233 dcblk->fps = hw.getRefreshRate(); 234 dcblk->density = hw.getDensity(); 235 236 // Initialize OpenGL|ES 237 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 238 glPixelStorei(GL_PACK_ALIGNMENT, 4); 239 glEnableClientState(GL_VERTEX_ARRAY); 240 glEnable(GL_SCISSOR_TEST); 241 glShadeModel(GL_FLAT); 242 glDisable(GL_DITHER); 243 glDisable(GL_CULL_FACE); 244 245 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 246 const uint16_t g1 = pack565(0x17,0x2f,0x17); 247 const uint16_t textureData[4] = { g0, g1, g1, g0 }; 248 glGenTextures(1, &mWormholeTexName); 249 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 250 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 251 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 252 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 253 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 254 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 255 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, textureData); 256 257 glViewport(0, 0, w, h); 258 glMatrixMode(GL_PROJECTION); 259 glLoadIdentity(); 260 glOrthof(0, w, h, 0, 0, 1); 261 262 mReadyToRunBarrier.open(); 263 264 /* 265 * We're now ready to accept clients... 266 */ 267 268 // start boot animation 269 property_set("ctl.start", "bootanim"); 270 271 return NO_ERROR; 272} 273 274// ---------------------------------------------------------------------------- 275#if 0 276#pragma mark - 277#pragma mark Events Handler 278#endif 279 280void SurfaceFlinger::waitForEvent() 281{ 282 while (true) { 283 nsecs_t timeout = -1; 284 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 285 if (UNLIKELY(isFrozen())) { 286 // wait 5 seconds 287 const nsecs_t now = systemTime(); 288 if (mFreezeDisplayTime == 0) { 289 mFreezeDisplayTime = now; 290 } 291 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 292 timeout = waitTime>0 ? waitTime : 0; 293 } 294 295 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 296 297 // see if we timed out 298 if (isFrozen()) { 299 const nsecs_t now = systemTime(); 300 nsecs_t frozenTime = (now - mFreezeDisplayTime); 301 if (frozenTime >= freezeDisplayTimeout) { 302 // we timed out and are still frozen 303 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 304 mFreezeDisplay, mFreezeCount); 305 mFreezeDisplayTime = 0; 306 mFreezeCount = 0; 307 mFreezeDisplay = false; 308 } 309 } 310 311 if (msg != 0) { 312 switch (msg->what) { 313 case MessageQueue::INVALIDATE: 314 // invalidate message, just return to the main loop 315 return; 316 } 317 } 318 } 319} 320 321void SurfaceFlinger::signalEvent() { 322 mEventQueue.invalidate(); 323} 324 325void SurfaceFlinger::signal() const { 326 // this is the IPC call 327 const_cast<SurfaceFlinger*>(this)->signalEvent(); 328} 329 330bool SurfaceFlinger::authenticateSurface(const sp<ISurface>& surface) const { 331 Mutex::Autolock _l(mStateLock); 332 sp<IBinder> surfBinder(surface->asBinder()); 333 334 // Check the visible layer list for the ISurface 335 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 336 size_t count = currentLayers.size(); 337 for (size_t i=0 ; i<count ; i++) { 338 const sp<LayerBase>& layer(currentLayers[i]); 339 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 340 if (lbc != NULL && lbc->getSurfaceBinder() == surfBinder) { 341 return true; 342 } 343 } 344 345 // Check the layers in the purgatory. This check is here so that if a 346 // Surface gets destroyed before all the clients are done using it, the 347 // error will not be reported as "surface XYZ is not authenticated", but 348 // will instead fail later on when the client tries to use the surface, 349 // which should be reported as "surface XYZ returned an -ENODEV". The 350 // purgatorized layers are no less authentic than the visible ones, so this 351 // should not cause any harm. 352 size_t purgatorySize = mLayerPurgatory.size(); 353 for (size_t i=0 ; i<purgatorySize ; i++) { 354 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 355 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 356 if (lbc != NULL && lbc->getSurfaceBinder() == surfBinder) { 357 return true; 358 } 359 } 360 361 return false; 362} 363 364status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 365 nsecs_t reltime, uint32_t flags) 366{ 367 return mEventQueue.postMessage(msg, reltime, flags); 368} 369 370status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 371 nsecs_t reltime, uint32_t flags) 372{ 373 status_t res = mEventQueue.postMessage(msg, reltime, flags); 374 if (res == NO_ERROR) { 375 msg->wait(); 376 } 377 return res; 378} 379 380// ---------------------------------------------------------------------------- 381#if 0 382#pragma mark - 383#pragma mark Main loop 384#endif 385 386bool SurfaceFlinger::threadLoop() 387{ 388 waitForEvent(); 389 390 // check for transactions 391 if (UNLIKELY(mConsoleSignals)) { 392 handleConsoleEvents(); 393 } 394 395 if (LIKELY(mTransactionCount == 0)) { 396 // if we're in a global transaction, don't do anything. 397 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 398 uint32_t transactionFlags = getTransactionFlags(mask); 399 if (LIKELY(transactionFlags)) { 400 handleTransaction(transactionFlags); 401 } 402 } 403 404 // post surfaces (if needed) 405 handlePageFlip(); 406 407 if (UNLIKELY(mHwWorkListDirty)) { 408 // build the h/w work list 409 handleWorkList(); 410 } 411 412 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 413 if (LIKELY(hw.canDraw() && !isFrozen())) { 414 // repaint the framebuffer (if needed) 415 416 const int index = hw.getCurrentBufferIndex(); 417 GraphicLog& logger(GraphicLog::getInstance()); 418 419 logger.log(GraphicLog::SF_REPAINT, index); 420 handleRepaint(); 421 422 // inform the h/w that we're done compositing 423 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 424 hw.compositionComplete(); 425 426 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 427 postFramebuffer(); 428 429 logger.log(GraphicLog::SF_REPAINT_DONE, index); 430 } else { 431 // pretend we did the post 432 hw.compositionComplete(); 433 usleep(16667); // 60 fps period 434 } 435 return true; 436} 437 438void SurfaceFlinger::postFramebuffer() 439{ 440 if (!mInvalidRegion.isEmpty()) { 441 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 442 const nsecs_t now = systemTime(); 443 mDebugInSwapBuffers = now; 444 hw.flip(mInvalidRegion); 445 mLastSwapBufferTime = systemTime() - now; 446 mDebugInSwapBuffers = 0; 447 mInvalidRegion.clear(); 448 } 449} 450 451void SurfaceFlinger::handleConsoleEvents() 452{ 453 // something to do with the console 454 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 455 456 int what = android_atomic_and(0, &mConsoleSignals); 457 if (what & eConsoleAcquired) { 458 hw.acquireScreen(); 459 // this is a temporary work-around, eventually this should be called 460 // by the power-manager 461 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 462 } 463 464 if (mDeferReleaseConsole && hw.isScreenAcquired()) { 465 // We got the release signal before the acquire signal 466 mDeferReleaseConsole = false; 467 hw.releaseScreen(); 468 } 469 470 if (what & eConsoleReleased) { 471 if (hw.isScreenAcquired()) { 472 hw.releaseScreen(); 473 } else { 474 mDeferReleaseConsole = true; 475 } 476 } 477 478 mDirtyRegion.set(hw.bounds()); 479} 480 481void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 482{ 483 Vector< sp<LayerBase> > ditchedLayers; 484 485 /* 486 * Perform and commit the transaction 487 */ 488 489 { // scope for the lock 490 Mutex::Autolock _l(mStateLock); 491 const nsecs_t now = systemTime(); 492 mDebugInTransaction = now; 493 handleTransactionLocked(transactionFlags, ditchedLayers); 494 mLastTransactionTime = systemTime() - now; 495 mDebugInTransaction = 0; 496 invalidateHwcGeometry(); 497 // here the transaction has been committed 498 } 499 500 /* 501 * Clean-up all layers that went away 502 * (do this without the lock held) 503 */ 504 505 const size_t count = ditchedLayers.size(); 506 for (size_t i=0 ; i<count ; i++) { 507 if (ditchedLayers[i] != 0) { 508 //LOGD("ditching layer %p", ditchedLayers[i].get()); 509 ditchedLayers[i]->ditch(); 510 } 511 } 512} 513 514void SurfaceFlinger::handleTransactionLocked( 515 uint32_t transactionFlags, Vector< sp<LayerBase> >& ditchedLayers) 516{ 517 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 518 const size_t count = currentLayers.size(); 519 520 /* 521 * Traversal of the children 522 * (perform the transaction for each of them if needed) 523 */ 524 525 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 526 if (layersNeedTransaction) { 527 for (size_t i=0 ; i<count ; i++) { 528 const sp<LayerBase>& layer = currentLayers[i]; 529 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 530 if (!trFlags) continue; 531 532 const uint32_t flags = layer->doTransaction(0); 533 if (flags & Layer::eVisibleRegion) 534 mVisibleRegionsDirty = true; 535 } 536 } 537 538 /* 539 * Perform our own transaction if needed 540 */ 541 542 if (transactionFlags & eTransactionNeeded) { 543 if (mCurrentState.orientation != mDrawingState.orientation) { 544 // the orientation has changed, recompute all visible regions 545 // and invalidate everything. 546 547 const int dpy = 0; 548 const int orientation = mCurrentState.orientation; 549 const uint32_t type = mCurrentState.orientationType; 550 GraphicPlane& plane(graphicPlane(dpy)); 551 plane.setOrientation(orientation); 552 553 // update the shared control block 554 const DisplayHardware& hw(plane.displayHardware()); 555 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 556 dcblk->orientation = orientation; 557 dcblk->w = plane.getWidth(); 558 dcblk->h = plane.getHeight(); 559 560 mVisibleRegionsDirty = true; 561 mDirtyRegion.set(hw.bounds()); 562 } 563 564 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 565 // freezing or unfreezing the display -> trigger animation if needed 566 mFreezeDisplay = mCurrentState.freezeDisplay; 567 if (mFreezeDisplay) 568 mFreezeDisplayTime = 0; 569 } 570 571 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 572 // layers have been added 573 mVisibleRegionsDirty = true; 574 } 575 576 // some layers might have been removed, so 577 // we need to update the regions they're exposing. 578 if (mLayersRemoved) { 579 mLayersRemoved = false; 580 mVisibleRegionsDirty = true; 581 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 582 const size_t count = previousLayers.size(); 583 for (size_t i=0 ; i<count ; i++) { 584 const sp<LayerBase>& layer(previousLayers[i]); 585 if (currentLayers.indexOf( layer ) < 0) { 586 // this layer is not visible anymore 587 ditchedLayers.add(layer); 588 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 589 } 590 } 591 } 592 } 593 594 commitTransaction(); 595} 596 597sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 598{ 599 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 600} 601 602void SurfaceFlinger::computeVisibleRegions( 603 LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 604{ 605 const GraphicPlane& plane(graphicPlane(0)); 606 const Transform& planeTransform(plane.transform()); 607 const DisplayHardware& hw(plane.displayHardware()); 608 const Region screenRegion(hw.bounds()); 609 610 Region aboveOpaqueLayers; 611 Region aboveCoveredLayers; 612 Region dirty; 613 614 bool secureFrameBuffer = false; 615 616 size_t i = currentLayers.size(); 617 while (i--) { 618 const sp<LayerBase>& layer = currentLayers[i]; 619 layer->validateVisibility(planeTransform); 620 621 // start with the whole surface at its current location 622 const Layer::State& s(layer->drawingState()); 623 624 /* 625 * opaqueRegion: area of a surface that is fully opaque. 626 */ 627 Region opaqueRegion; 628 629 /* 630 * visibleRegion: area of a surface that is visible on screen 631 * and not fully transparent. This is essentially the layer's 632 * footprint minus the opaque regions above it. 633 * Areas covered by a translucent surface are considered visible. 634 */ 635 Region visibleRegion; 636 637 /* 638 * coveredRegion: area of a surface that is covered by all 639 * visible regions above it (which includes the translucent areas). 640 */ 641 Region coveredRegion; 642 643 644 // handle hidden surfaces by setting the visible region to empty 645 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 646 const bool translucent = layer->needsBlending(); 647 const Rect bounds(layer->visibleBounds()); 648 visibleRegion.set(bounds); 649 visibleRegion.andSelf(screenRegion); 650 if (!visibleRegion.isEmpty()) { 651 // Remove the transparent area from the visible region 652 if (translucent) { 653 visibleRegion.subtractSelf(layer->transparentRegionScreen); 654 } 655 656 // compute the opaque region 657 const int32_t layerOrientation = layer->getOrientation(); 658 if (s.alpha==255 && !translucent && 659 ((layerOrientation & Transform::ROT_INVALID) == false)) { 660 // the opaque region is the layer's footprint 661 opaqueRegion = visibleRegion; 662 } 663 } 664 } 665 666 // Clip the covered region to the visible region 667 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 668 669 // Update aboveCoveredLayers for next (lower) layer 670 aboveCoveredLayers.orSelf(visibleRegion); 671 672 // subtract the opaque region covered by the layers above us 673 visibleRegion.subtractSelf(aboveOpaqueLayers); 674 675 // compute this layer's dirty region 676 if (layer->contentDirty) { 677 // we need to invalidate the whole region 678 dirty = visibleRegion; 679 // as well, as the old visible region 680 dirty.orSelf(layer->visibleRegionScreen); 681 layer->contentDirty = false; 682 } else { 683 /* compute the exposed region: 684 * the exposed region consists of two components: 685 * 1) what's VISIBLE now and was COVERED before 686 * 2) what's EXPOSED now less what was EXPOSED before 687 * 688 * note that (1) is conservative, we start with the whole 689 * visible region but only keep what used to be covered by 690 * something -- which mean it may have been exposed. 691 * 692 * (2) handles areas that were not covered by anything but got 693 * exposed because of a resize. 694 */ 695 const Region newExposed = visibleRegion - coveredRegion; 696 const Region oldVisibleRegion = layer->visibleRegionScreen; 697 const Region oldCoveredRegion = layer->coveredRegionScreen; 698 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 699 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 700 } 701 dirty.subtractSelf(aboveOpaqueLayers); 702 703 // accumulate to the screen dirty region 704 dirtyRegion.orSelf(dirty); 705 706 // Update aboveOpaqueLayers for next (lower) layer 707 aboveOpaqueLayers.orSelf(opaqueRegion); 708 709 // Store the visible region is screen space 710 layer->setVisibleRegion(visibleRegion); 711 layer->setCoveredRegion(coveredRegion); 712 713 // If a secure layer is partially visible, lock-down the screen! 714 if (layer->isSecure() && !visibleRegion.isEmpty()) { 715 secureFrameBuffer = true; 716 } 717 } 718 719 // invalidate the areas where a layer was removed 720 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 721 mDirtyRegionRemovedLayer.clear(); 722 723 mSecureFrameBuffer = secureFrameBuffer; 724 opaqueRegion = aboveOpaqueLayers; 725} 726 727 728void SurfaceFlinger::commitTransaction() 729{ 730 mDrawingState = mCurrentState; 731 mResizeTransationPending = false; 732 mTransactionCV.broadcast(); 733} 734 735void SurfaceFlinger::handlePageFlip() 736{ 737 bool visibleRegions = mVisibleRegionsDirty; 738 LayerVector& currentLayers( 739 const_cast<LayerVector&>(mDrawingState.layersSortedByZ)); 740 visibleRegions |= lockPageFlip(currentLayers); 741 742 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 743 const Region screenRegion(hw.bounds()); 744 if (visibleRegions) { 745 Region opaqueRegion; 746 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 747 748 /* 749 * rebuild the visible layer list 750 */ 751 mVisibleLayersSortedByZ.clear(); 752 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 753 size_t count = currentLayers.size(); 754 mVisibleLayersSortedByZ.setCapacity(count); 755 for (size_t i=0 ; i<count ; i++) { 756 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 757 mVisibleLayersSortedByZ.add(currentLayers[i]); 758 } 759 760 mWormholeRegion = screenRegion.subtract(opaqueRegion); 761 mVisibleRegionsDirty = false; 762 invalidateHwcGeometry(); 763 } 764 765 unlockPageFlip(currentLayers); 766 mDirtyRegion.andSelf(screenRegion); 767} 768 769void SurfaceFlinger::invalidateHwcGeometry() 770{ 771 mHwWorkListDirty = true; 772} 773 774bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 775{ 776 bool recomputeVisibleRegions = false; 777 size_t count = currentLayers.size(); 778 sp<LayerBase> const* layers = currentLayers.array(); 779 for (size_t i=0 ; i<count ; i++) { 780 const sp<LayerBase>& layer(layers[i]); 781 layer->lockPageFlip(recomputeVisibleRegions); 782 } 783 return recomputeVisibleRegions; 784} 785 786void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 787{ 788 const GraphicPlane& plane(graphicPlane(0)); 789 const Transform& planeTransform(plane.transform()); 790 size_t count = currentLayers.size(); 791 sp<LayerBase> const* layers = currentLayers.array(); 792 for (size_t i=0 ; i<count ; i++) { 793 const sp<LayerBase>& layer(layers[i]); 794 layer->unlockPageFlip(planeTransform, mDirtyRegion); 795 } 796} 797 798void SurfaceFlinger::handleWorkList() 799{ 800 mHwWorkListDirty = false; 801 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 802 if (hwc.initCheck() == NO_ERROR) { 803 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 804 const size_t count = currentLayers.size(); 805 hwc.createWorkList(count); 806 hwc_layer_t* const cur(hwc.getLayers()); 807 for (size_t i=0 ; cur && i<count ; i++) { 808 currentLayers[i]->setGeometry(&cur[i]); 809 if (mDebugDisableHWC) { 810 cur[i].compositionType = HWC_FRAMEBUFFER; 811 cur[i].flags |= HWC_SKIP_LAYER; 812 } 813 } 814 } 815} 816 817void SurfaceFlinger::handleRepaint() 818{ 819 // compute the invalid region 820 mInvalidRegion.orSelf(mDirtyRegion); 821 822 if (UNLIKELY(mDebugRegion)) { 823 debugFlashRegions(); 824 } 825 826 // set the frame buffer 827 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 828 glMatrixMode(GL_MODELVIEW); 829 glLoadIdentity(); 830 831 uint32_t flags = hw.getFlags(); 832 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 833 (flags & DisplayHardware::BUFFER_PRESERVED)) 834 { 835 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 836 // takes a rectangle, we must make sure to update that whole 837 // rectangle in that case 838 if (flags & DisplayHardware::SWAP_RECTANGLE) { 839 // TODO: we really should be able to pass a region to 840 // SWAP_RECTANGLE so that we don't have to redraw all this. 841 mDirtyRegion.set(mInvalidRegion.bounds()); 842 } else { 843 // in the BUFFER_PRESERVED case, obviously, we can update only 844 // what's needed and nothing more. 845 // NOTE: this is NOT a common case, as preserving the backbuffer 846 // is costly and usually involves copying the whole update back. 847 } 848 } else { 849 if (flags & DisplayHardware::PARTIAL_UPDATES) { 850 // We need to redraw the rectangle that will be updated 851 // (pushed to the framebuffer). 852 // This is needed because PARTIAL_UPDATES only takes one 853 // rectangle instead of a region (see DisplayHardware::flip()) 854 mDirtyRegion.set(mInvalidRegion.bounds()); 855 } else { 856 // we need to redraw everything (the whole screen) 857 mDirtyRegion.set(hw.bounds()); 858 mInvalidRegion = mDirtyRegion; 859 } 860 } 861 862 // compose all surfaces 863 composeSurfaces(mDirtyRegion); 864 865 // clear the dirty regions 866 mDirtyRegion.clear(); 867} 868 869void SurfaceFlinger::composeSurfaces(const Region& dirty) 870{ 871 if (UNLIKELY(!mWormholeRegion.isEmpty())) { 872 // should never happen unless the window manager has a bug 873 // draw something... 874 drawWormhole(); 875 } 876 877 status_t err = NO_ERROR; 878 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 879 size_t count = layers.size(); 880 881 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 882 HWComposer& hwc(hw.getHwComposer()); 883 hwc_layer_t* const cur(hwc.getLayers()); 884 885 LOGE_IF(cur && hwc.getNumLayers() != count, 886 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 887 hwc.getNumLayers(), count); 888 889 // just to be extra-safe, use the smallest count 890 if (hwc.initCheck() == NO_ERROR) { 891 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 892 } 893 894 /* 895 * update the per-frame h/w composer data for each layer 896 * and build the transparent region of the FB 897 */ 898 Region transparent; 899 if (cur) { 900 for (size_t i=0 ; i<count ; i++) { 901 const sp<LayerBase>& layer(layers[i]); 902 layer->setPerFrameData(&cur[i]); 903 } 904 err = hwc.prepare(); 905 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 906 907 if (err == NO_ERROR) { 908 for (size_t i=0 ; i<count ; i++) { 909 if (cur[i].hints & HWC_HINT_CLEAR_FB) { 910 const sp<LayerBase>& layer(layers[i]); 911 if (!(layer->needsBlending())) { 912 transparent.orSelf(layer->visibleRegionScreen); 913 } 914 } 915 } 916 917 /* 918 * clear the area of the FB that need to be transparent 919 */ 920 transparent.andSelf(dirty); 921 if (!transparent.isEmpty()) { 922 glClearColor(0,0,0,0); 923 Region::const_iterator it = transparent.begin(); 924 Region::const_iterator const end = transparent.end(); 925 const int32_t height = hw.getHeight(); 926 while (it != end) { 927 const Rect& r(*it++); 928 const GLint sy = height - (r.top + r.height()); 929 glScissor(r.left, sy, r.width(), r.height()); 930 glClear(GL_COLOR_BUFFER_BIT); 931 } 932 } 933 } 934 } 935 936 937 /* 938 * and then, render the layers targeted at the framebuffer 939 */ 940 for (size_t i=0 ; i<count ; i++) { 941 if (cur) { 942 if ((cur[i].compositionType != HWC_FRAMEBUFFER) && 943 !(cur[i].flags & HWC_SKIP_LAYER)) { 944 // skip layers handled by the HAL 945 continue; 946 } 947 } 948 949 const sp<LayerBase>& layer(layers[i]); 950 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 951 if (!clip.isEmpty()) { 952 layer->draw(clip); 953 } 954 } 955} 956 957void SurfaceFlinger::debugFlashRegions() 958{ 959 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 960 const uint32_t flags = hw.getFlags(); 961 962 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 963 (flags & DisplayHardware::BUFFER_PRESERVED))) { 964 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 965 mDirtyRegion.bounds() : hw.bounds()); 966 composeSurfaces(repaint); 967 } 968 969 TextureManager::deactivateTextures(); 970 971 glDisable(GL_BLEND); 972 glDisable(GL_DITHER); 973 glDisable(GL_SCISSOR_TEST); 974 975 static int toggle = 0; 976 toggle = 1 - toggle; 977 if (toggle) { 978 glColor4f(1, 0, 1, 1); 979 } else { 980 glColor4f(1, 1, 0, 1); 981 } 982 983 Region::const_iterator it = mDirtyRegion.begin(); 984 Region::const_iterator const end = mDirtyRegion.end(); 985 while (it != end) { 986 const Rect& r = *it++; 987 GLfloat vertices[][2] = { 988 { r.left, r.top }, 989 { r.left, r.bottom }, 990 { r.right, r.bottom }, 991 { r.right, r.top } 992 }; 993 glVertexPointer(2, GL_FLOAT, 0, vertices); 994 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 995 } 996 997 if (mInvalidRegion.isEmpty()) { 998 mDirtyRegion.dump("mDirtyRegion"); 999 mInvalidRegion.dump("mInvalidRegion"); 1000 } 1001 hw.flip(mInvalidRegion); 1002 1003 if (mDebugRegion > 1) 1004 usleep(mDebugRegion * 1000); 1005 1006 glEnable(GL_SCISSOR_TEST); 1007 //mDirtyRegion.dump("mDirtyRegion"); 1008} 1009 1010void SurfaceFlinger::drawWormhole() const 1011{ 1012 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1013 if (region.isEmpty()) 1014 return; 1015 1016 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1017 const int32_t width = hw.getWidth(); 1018 const int32_t height = hw.getHeight(); 1019 1020 glDisable(GL_BLEND); 1021 glDisable(GL_DITHER); 1022 1023 if (LIKELY(!mDebugBackground)) { 1024 glClearColor(0,0,0,0); 1025 Region::const_iterator it = region.begin(); 1026 Region::const_iterator const end = region.end(); 1027 while (it != end) { 1028 const Rect& r = *it++; 1029 const GLint sy = height - (r.top + r.height()); 1030 glScissor(r.left, sy, r.width(), r.height()); 1031 glClear(GL_COLOR_BUFFER_BIT); 1032 } 1033 } else { 1034 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1035 { width, height }, { 0, height } }; 1036 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1037 glVertexPointer(2, GL_SHORT, 0, vertices); 1038 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1039 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1040#if defined(GL_OES_EGL_image_external) 1041 if (GLExtensions::getInstance().haveTextureExternal()) { 1042 glDisable(GL_TEXTURE_EXTERNAL_OES); 1043 } 1044#endif 1045 glEnable(GL_TEXTURE_2D); 1046 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1047 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1048 glMatrixMode(GL_TEXTURE); 1049 glLoadIdentity(); 1050 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1051 Region::const_iterator it = region.begin(); 1052 Region::const_iterator const end = region.end(); 1053 while (it != end) { 1054 const Rect& r = *it++; 1055 const GLint sy = height - (r.top + r.height()); 1056 glScissor(r.left, sy, r.width(), r.height()); 1057 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1058 } 1059 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1060 glLoadIdentity(); 1061 glMatrixMode(GL_MODELVIEW); 1062 } 1063} 1064 1065void SurfaceFlinger::debugShowFPS() const 1066{ 1067 static int mFrameCount; 1068 static int mLastFrameCount = 0; 1069 static nsecs_t mLastFpsTime = 0; 1070 static float mFps = 0; 1071 mFrameCount++; 1072 nsecs_t now = systemTime(); 1073 nsecs_t diff = now - mLastFpsTime; 1074 if (diff > ms2ns(250)) { 1075 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1076 mLastFpsTime = now; 1077 mLastFrameCount = mFrameCount; 1078 } 1079 // XXX: mFPS has the value we want 1080 } 1081 1082status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1083{ 1084 Mutex::Autolock _l(mStateLock); 1085 addLayer_l(layer); 1086 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1087 return NO_ERROR; 1088} 1089 1090status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1091{ 1092 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1093 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1094} 1095 1096ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1097 const sp<LayerBaseClient>& lbc) 1098{ 1099 Mutex::Autolock _l(mStateLock); 1100 1101 // attach this layer to the client 1102 ssize_t name = client->attachLayer(lbc); 1103 1104 // add this layer to the current state list 1105 addLayer_l(lbc); 1106 1107 return name; 1108} 1109 1110status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1111{ 1112 Mutex::Autolock _l(mStateLock); 1113 status_t err = purgatorizeLayer_l(layer); 1114 if (err == NO_ERROR) 1115 setTransactionFlags(eTransactionNeeded); 1116 return err; 1117} 1118 1119status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1120{ 1121 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1122 if (lbc != 0) { 1123 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1124 } 1125 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1126 if (index >= 0) { 1127 mLayersRemoved = true; 1128 return NO_ERROR; 1129 } 1130 return status_t(index); 1131} 1132 1133status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1134{ 1135 // First add the layer to the purgatory list, which makes sure it won't 1136 // go away, then remove it from the main list (through a transaction). 1137 ssize_t err = removeLayer_l(layerBase); 1138 if (err >= 0) { 1139 mLayerPurgatory.add(layerBase); 1140 } 1141 1142 layerBase->onRemoved(); 1143 1144 // it's possible that we don't find a layer, because it might 1145 // have been destroyed already -- this is not technically an error 1146 // from the user because there is a race between Client::destroySurface(), 1147 // ~Client() and ~ISurface(). 1148 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1149} 1150 1151status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1152{ 1153 layer->forceVisibilityTransaction(); 1154 setTransactionFlags(eTraversalNeeded); 1155 return NO_ERROR; 1156} 1157 1158uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1159{ 1160 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1161} 1162 1163uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1164{ 1165 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1166 if ((old & flags)==0) { // wake the server up 1167 signalEvent(); 1168 } 1169 return old; 1170} 1171 1172void SurfaceFlinger::openGlobalTransaction() 1173{ 1174 android_atomic_inc(&mTransactionCount); 1175} 1176 1177void SurfaceFlinger::closeGlobalTransaction() 1178{ 1179 if (android_atomic_dec(&mTransactionCount) == 1) { 1180 signalEvent(); 1181 1182 // if there is a transaction with a resize, wait for it to 1183 // take effect before returning. 1184 Mutex::Autolock _l(mStateLock); 1185 while (mResizeTransationPending) { 1186 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1187 if (CC_UNLIKELY(err != NO_ERROR)) { 1188 // just in case something goes wrong in SF, return to the 1189 // called after a few seconds. 1190 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1191 mResizeTransationPending = false; 1192 break; 1193 } 1194 } 1195 } 1196} 1197 1198status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1199{ 1200 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1201 return BAD_VALUE; 1202 1203 Mutex::Autolock _l(mStateLock); 1204 mCurrentState.freezeDisplay = 1; 1205 setTransactionFlags(eTransactionNeeded); 1206 1207 // flags is intended to communicate some sort of animation behavior 1208 // (for instance fading) 1209 return NO_ERROR; 1210} 1211 1212status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1213{ 1214 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1215 return BAD_VALUE; 1216 1217 Mutex::Autolock _l(mStateLock); 1218 mCurrentState.freezeDisplay = 0; 1219 setTransactionFlags(eTransactionNeeded); 1220 1221 // flags is intended to communicate some sort of animation behavior 1222 // (for instance fading) 1223 return NO_ERROR; 1224} 1225 1226int SurfaceFlinger::setOrientation(DisplayID dpy, 1227 int orientation, uint32_t flags) 1228{ 1229 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1230 return BAD_VALUE; 1231 1232 Mutex::Autolock _l(mStateLock); 1233 if (mCurrentState.orientation != orientation) { 1234 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1235 mCurrentState.orientationType = flags; 1236 mCurrentState.orientation = orientation; 1237 setTransactionFlags(eTransactionNeeded); 1238 mTransactionCV.wait(mStateLock); 1239 } else { 1240 orientation = BAD_VALUE; 1241 } 1242 } 1243 return orientation; 1244} 1245 1246sp<ISurface> SurfaceFlinger::createSurface(const sp<Client>& client, int pid, 1247 const String8& name, ISurfaceComposerClient::surface_data_t* params, 1248 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1249 uint32_t flags) 1250{ 1251 sp<LayerBaseClient> layer; 1252 sp<LayerBaseClient::Surface> surfaceHandle; 1253 1254 if (int32_t(w|h) < 0) { 1255 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1256 int(w), int(h)); 1257 return surfaceHandle; 1258 } 1259 1260 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1261 sp<Layer> normalLayer; 1262 switch (flags & eFXSurfaceMask) { 1263 case eFXSurfaceNormal: 1264 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1265 layer = normalLayer; 1266 break; 1267 case eFXSurfaceBlur: 1268 // for now we treat Blur as Dim, until we can implement it 1269 // efficiently. 1270 case eFXSurfaceDim: 1271 layer = createDimSurface(client, d, w, h, flags); 1272 break; 1273 } 1274 1275 if (layer != 0) { 1276 layer->initStates(w, h, flags); 1277 layer->setName(name); 1278 ssize_t token = addClientLayer(client, layer); 1279 1280 surfaceHandle = layer->getSurface(); 1281 if (surfaceHandle != 0) { 1282 params->token = token; 1283 params->identity = surfaceHandle->getIdentity(); 1284 params->width = w; 1285 params->height = h; 1286 params->format = format; 1287 if (normalLayer != 0) { 1288 Mutex::Autolock _l(mStateLock); 1289 mLayerMap.add(surfaceHandle->asBinder(), normalLayer); 1290 } 1291 } 1292 1293 setTransactionFlags(eTransactionNeeded); 1294 } 1295 1296 return surfaceHandle; 1297} 1298 1299sp<Layer> SurfaceFlinger::createNormalSurface( 1300 const sp<Client>& client, DisplayID display, 1301 uint32_t w, uint32_t h, uint32_t flags, 1302 PixelFormat& format) 1303{ 1304 // initialize the surfaces 1305 switch (format) { // TODO: take h/w into account 1306 case PIXEL_FORMAT_TRANSPARENT: 1307 case PIXEL_FORMAT_TRANSLUCENT: 1308 format = PIXEL_FORMAT_RGBA_8888; 1309 break; 1310 case PIXEL_FORMAT_OPAQUE: 1311#ifdef NO_RGBX_8888 1312 format = PIXEL_FORMAT_RGB_565; 1313#else 1314 format = PIXEL_FORMAT_RGBX_8888; 1315#endif 1316 break; 1317 } 1318 1319#ifdef NO_RGBX_8888 1320 if (format == PIXEL_FORMAT_RGBX_8888) 1321 format = PIXEL_FORMAT_RGBA_8888; 1322#endif 1323 1324 sp<Layer> layer = new Layer(this, display, client); 1325 status_t err = layer->setBuffers(w, h, format, flags); 1326 if (LIKELY(err != NO_ERROR)) { 1327 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1328 layer.clear(); 1329 } 1330 return layer; 1331} 1332 1333sp<LayerDim> SurfaceFlinger::createDimSurface( 1334 const sp<Client>& client, DisplayID display, 1335 uint32_t w, uint32_t h, uint32_t flags) 1336{ 1337 sp<LayerDim> layer = new LayerDim(this, display, client); 1338 layer->initStates(w, h, flags); 1339 return layer; 1340} 1341 1342status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1343{ 1344 /* 1345 * called by the window manager, when a surface should be marked for 1346 * destruction. 1347 * 1348 * The surface is removed from the current and drawing lists, but placed 1349 * in the purgatory queue, so it's not destroyed right-away (we need 1350 * to wait for all client's references to go away first). 1351 */ 1352 1353 status_t err = NAME_NOT_FOUND; 1354 Mutex::Autolock _l(mStateLock); 1355 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1356 if (layer != 0) { 1357 err = purgatorizeLayer_l(layer); 1358 if (err == NO_ERROR) { 1359 setTransactionFlags(eTransactionNeeded); 1360 } 1361 } 1362 return err; 1363} 1364 1365status_t SurfaceFlinger::destroySurface(const sp<LayerBaseClient>& layer) 1366{ 1367 // called by ~ISurface() when all references are gone 1368 1369 class MessageDestroySurface : public MessageBase { 1370 SurfaceFlinger* flinger; 1371 sp<LayerBaseClient> layer; 1372 public: 1373 MessageDestroySurface( 1374 SurfaceFlinger* flinger, const sp<LayerBaseClient>& layer) 1375 : flinger(flinger), layer(layer) { } 1376 virtual bool handler() { 1377 sp<LayerBaseClient> l(layer); 1378 layer.clear(); // clear it outside of the lock; 1379 Mutex::Autolock _l(flinger->mStateLock); 1380 /* 1381 * remove the layer from the current list -- chances are that it's 1382 * not in the list anyway, because it should have been removed 1383 * already upon request of the client (eg: window manager). 1384 * However, a buggy client could have not done that. 1385 * Since we know we don't have any more clients, we don't need 1386 * to use the purgatory. 1387 */ 1388 status_t err = flinger->removeLayer_l(l); 1389 if (err == NAME_NOT_FOUND) { 1390 // The surface wasn't in the current list, which means it was 1391 // removed already, which means it is in the purgatory, 1392 // and need to be removed from there. 1393 // This needs to happen from the main thread since its dtor 1394 // must run from there (b/c of OpenGL ES). Additionally, we 1395 // can't really acquire our internal lock from 1396 // destroySurface() -- see postMessage() below. 1397 ssize_t idx = flinger->mLayerPurgatory.remove(l); 1398 LOGE_IF(idx < 0, 1399 "layer=%p is not in the purgatory list", l.get()); 1400 } 1401 1402 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1403 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1404 return true; 1405 } 1406 }; 1407 1408 postMessageAsync( new MessageDestroySurface(this, layer) ); 1409 return NO_ERROR; 1410} 1411 1412status_t SurfaceFlinger::setClientState( 1413 const sp<Client>& client, 1414 int32_t count, 1415 const layer_state_t* states) 1416{ 1417 Mutex::Autolock _l(mStateLock); 1418 uint32_t flags = 0; 1419 for (int i=0 ; i<count ; i++) { 1420 const layer_state_t& s(states[i]); 1421 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1422 if (layer != 0) { 1423 const uint32_t what = s.what; 1424 if (what & ePositionChanged) { 1425 if (layer->setPosition(s.x, s.y)) 1426 flags |= eTraversalNeeded; 1427 } 1428 if (what & eLayerChanged) { 1429 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1430 if (layer->setLayer(s.z)) { 1431 mCurrentState.layersSortedByZ.removeAt(idx); 1432 mCurrentState.layersSortedByZ.add(layer); 1433 // we need traversal (state changed) 1434 // AND transaction (list changed) 1435 flags |= eTransactionNeeded|eTraversalNeeded; 1436 } 1437 } 1438 if (what & eSizeChanged) { 1439 if (layer->setSize(s.w, s.h)) { 1440 flags |= eTraversalNeeded; 1441 mResizeTransationPending = true; 1442 } 1443 } 1444 if (what & eAlphaChanged) { 1445 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1446 flags |= eTraversalNeeded; 1447 } 1448 if (what & eMatrixChanged) { 1449 if (layer->setMatrix(s.matrix)) 1450 flags |= eTraversalNeeded; 1451 } 1452 if (what & eTransparentRegionChanged) { 1453 if (layer->setTransparentRegionHint(s.transparentRegion)) 1454 flags |= eTraversalNeeded; 1455 } 1456 if (what & eVisibilityChanged) { 1457 if (layer->setFlags(s.flags, s.mask)) 1458 flags |= eTraversalNeeded; 1459 } 1460 } 1461 } 1462 if (flags) { 1463 setTransactionFlags(flags); 1464 } 1465 return NO_ERROR; 1466} 1467 1468void SurfaceFlinger::screenReleased(int dpy) 1469{ 1470 // this may be called by a signal handler, we can't do too much in here 1471 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1472 signalEvent(); 1473} 1474 1475void SurfaceFlinger::screenAcquired(int dpy) 1476{ 1477 // this may be called by a signal handler, we can't do too much in here 1478 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1479 signalEvent(); 1480} 1481 1482status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1483{ 1484 const size_t SIZE = 4096; 1485 char buffer[SIZE]; 1486 String8 result; 1487 if (!mDump.checkCalling()) { 1488 snprintf(buffer, SIZE, "Permission Denial: " 1489 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1490 IPCThreadState::self()->getCallingPid(), 1491 IPCThreadState::self()->getCallingUid()); 1492 result.append(buffer); 1493 } else { 1494 1495 // figure out if we're stuck somewhere 1496 const nsecs_t now = systemTime(); 1497 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1498 const nsecs_t inTransaction(mDebugInTransaction); 1499 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1500 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1501 1502 // Try to get the main lock, but don't insist if we can't 1503 // (this would indicate SF is stuck, but we want to be able to 1504 // print something in dumpsys). 1505 int retry = 3; 1506 while (mStateLock.tryLock()<0 && --retry>=0) { 1507 usleep(1000000); 1508 } 1509 const bool locked(retry >= 0); 1510 if (!locked) { 1511 snprintf(buffer, SIZE, 1512 "SurfaceFlinger appears to be unresponsive, " 1513 "dumping anyways (no locks held)\n"); 1514 result.append(buffer); 1515 } 1516 1517 /* 1518 * Dump the visible layer list 1519 */ 1520 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1521 const size_t count = currentLayers.size(); 1522 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1523 result.append(buffer); 1524 for (size_t i=0 ; i<count ; i++) { 1525 const sp<LayerBase>& layer(currentLayers[i]); 1526 layer->dump(result, buffer, SIZE); 1527 const Layer::State& s(layer->drawingState()); 1528 s.transparentRegion.dump(result, "transparentRegion"); 1529 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1530 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1531 } 1532 1533 /* 1534 * Dump the layers in the purgatory 1535 */ 1536 1537 const size_t purgatorySize = mLayerPurgatory.size(); 1538 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1539 result.append(buffer); 1540 for (size_t i=0 ; i<purgatorySize ; i++) { 1541 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1542 layer->shortDump(result, buffer, SIZE); 1543 } 1544 1545 /* 1546 * Dump SurfaceFlinger global state 1547 */ 1548 1549 snprintf(buffer, SIZE, "SurfaceFlinger global state\n"); 1550 result.append(buffer); 1551 mWormholeRegion.dump(result, "WormholeRegion"); 1552 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1553 snprintf(buffer, SIZE, 1554 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1555 mFreezeDisplay?"yes":"no", mFreezeCount, 1556 mCurrentState.orientation, hw.canDraw()); 1557 result.append(buffer); 1558 snprintf(buffer, SIZE, 1559 " last eglSwapBuffers() time: %f us\n" 1560 " last transaction time : %f us\n", 1561 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1562 result.append(buffer); 1563 1564 if (inSwapBuffersDuration || !locked) { 1565 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1566 inSwapBuffersDuration/1000.0); 1567 result.append(buffer); 1568 } 1569 1570 if (inTransactionDuration || !locked) { 1571 snprintf(buffer, SIZE, " transaction time: %f us\n", 1572 inTransactionDuration/1000.0); 1573 result.append(buffer); 1574 } 1575 1576 /* 1577 * Dump HWComposer state 1578 */ 1579 HWComposer& hwc(hw.getHwComposer()); 1580 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1581 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1582 mDebugDisableHWC ? "disabled" : "enabled"); 1583 result.append(buffer); 1584 hwc.dump(result, buffer, SIZE); 1585 1586 /* 1587 * Dump gralloc state 1588 */ 1589 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1590 alloc.dump(result); 1591 hw.dump(result); 1592 1593 if (locked) { 1594 mStateLock.unlock(); 1595 } 1596 } 1597 write(fd, result.string(), result.size()); 1598 return NO_ERROR; 1599} 1600 1601status_t SurfaceFlinger::onTransact( 1602 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1603{ 1604 switch (code) { 1605 case CREATE_CONNECTION: 1606 case OPEN_GLOBAL_TRANSACTION: 1607 case CLOSE_GLOBAL_TRANSACTION: 1608 case SET_ORIENTATION: 1609 case FREEZE_DISPLAY: 1610 case UNFREEZE_DISPLAY: 1611 case BOOT_FINISHED: 1612 case TURN_ELECTRON_BEAM_OFF: 1613 case TURN_ELECTRON_BEAM_ON: 1614 { 1615 // codes that require permission check 1616 IPCThreadState* ipc = IPCThreadState::self(); 1617 const int pid = ipc->getCallingPid(); 1618 const int uid = ipc->getCallingUid(); 1619 if ((uid != AID_GRAPHICS) && !mAccessSurfaceFlinger.check(pid, uid)) { 1620 LOGE("Permission Denial: " 1621 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1622 return PERMISSION_DENIED; 1623 } 1624 break; 1625 } 1626 case CAPTURE_SCREEN: 1627 { 1628 // codes that require permission check 1629 IPCThreadState* ipc = IPCThreadState::self(); 1630 const int pid = ipc->getCallingPid(); 1631 const int uid = ipc->getCallingUid(); 1632 if ((uid != AID_GRAPHICS) && !mReadFramebuffer.check(pid, uid)) { 1633 LOGE("Permission Denial: " 1634 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1635 return PERMISSION_DENIED; 1636 } 1637 break; 1638 } 1639 } 1640 1641 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1642 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1643 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1644 if (UNLIKELY(!mHardwareTest.checkCalling())) { 1645 IPCThreadState* ipc = IPCThreadState::self(); 1646 const int pid = ipc->getCallingPid(); 1647 const int uid = ipc->getCallingUid(); 1648 LOGE("Permission Denial: " 1649 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1650 return PERMISSION_DENIED; 1651 } 1652 int n; 1653 switch (code) { 1654 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1655 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1656 return NO_ERROR; 1657 case 1002: // SHOW_UPDATES 1658 n = data.readInt32(); 1659 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1660 return NO_ERROR; 1661 case 1003: // SHOW_BACKGROUND 1662 n = data.readInt32(); 1663 mDebugBackground = n ? 1 : 0; 1664 return NO_ERROR; 1665 case 1008: // toggle use of hw composer 1666 n = data.readInt32(); 1667 mDebugDisableHWC = n ? 1 : 0; 1668 invalidateHwcGeometry(); 1669 // fall-through... 1670 case 1004:{ // repaint everything 1671 Mutex::Autolock _l(mStateLock); 1672 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1673 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1674 signalEvent(); 1675 return NO_ERROR; 1676 } 1677 case 1005:{ // force transaction 1678 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1679 return NO_ERROR; 1680 } 1681 case 1006:{ // enable/disable GraphicLog 1682 int enabled = data.readInt32(); 1683 GraphicLog::getInstance().setEnabled(enabled); 1684 return NO_ERROR; 1685 } 1686 case 1007: // set mFreezeCount 1687 mFreezeCount = data.readInt32(); 1688 mFreezeDisplayTime = 0; 1689 return NO_ERROR; 1690 case 1010: // interrogate. 1691 reply->writeInt32(0); 1692 reply->writeInt32(0); 1693 reply->writeInt32(mDebugRegion); 1694 reply->writeInt32(mDebugBackground); 1695 return NO_ERROR; 1696 case 1013: { 1697 Mutex::Autolock _l(mStateLock); 1698 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1699 reply->writeInt32(hw.getPageFlipCount()); 1700 } 1701 return NO_ERROR; 1702 } 1703 } 1704 return err; 1705} 1706 1707// --------------------------------------------------------------------------- 1708 1709status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1710 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1711{ 1712 if (!GLExtensions::getInstance().haveFramebufferObject()) 1713 return INVALID_OPERATION; 1714 1715 // get screen geometry 1716 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1717 const uint32_t hw_w = hw.getWidth(); 1718 const uint32_t hw_h = hw.getHeight(); 1719 GLfloat u = 1; 1720 GLfloat v = 1; 1721 1722 // make sure to clear all GL error flags 1723 while ( glGetError() != GL_NO_ERROR ) ; 1724 1725 // create a FBO 1726 GLuint name, tname; 1727 glGenTextures(1, &tname); 1728 glBindTexture(GL_TEXTURE_2D, tname); 1729 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1730 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1731 if (glGetError() != GL_NO_ERROR) { 1732 while ( glGetError() != GL_NO_ERROR ) ; 1733 GLint tw = (2 << (31 - clz(hw_w))); 1734 GLint th = (2 << (31 - clz(hw_h))); 1735 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1736 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1737 u = GLfloat(hw_w) / tw; 1738 v = GLfloat(hw_h) / th; 1739 } 1740 glGenFramebuffersOES(1, &name); 1741 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1742 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1743 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1744 1745 // redraw the screen entirely... 1746 glClearColor(0,0,0,1); 1747 glClear(GL_COLOR_BUFFER_BIT); 1748 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1749 const size_t count = layers.size(); 1750 for (size_t i=0 ; i<count ; ++i) { 1751 const sp<LayerBase>& layer(layers[i]); 1752 layer->drawForSreenShot(); 1753 } 1754 1755 // back to main framebuffer 1756 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1757 glDisable(GL_SCISSOR_TEST); 1758 glDeleteFramebuffersOES(1, &name); 1759 1760 *textureName = tname; 1761 *uOut = u; 1762 *vOut = v; 1763 return NO_ERROR; 1764} 1765 1766// --------------------------------------------------------------------------- 1767 1768status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1769{ 1770 status_t result = PERMISSION_DENIED; 1771 1772 if (!GLExtensions::getInstance().haveFramebufferObject()) 1773 return INVALID_OPERATION; 1774 1775 // get screen geometry 1776 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1777 const uint32_t hw_w = hw.getWidth(); 1778 const uint32_t hw_h = hw.getHeight(); 1779 const Region screenBounds(hw.bounds()); 1780 1781 GLfloat u, v; 1782 GLuint tname; 1783 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1784 if (result != NO_ERROR) { 1785 return result; 1786 } 1787 1788 GLfloat vtx[8]; 1789 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1790 glEnable(GL_TEXTURE_2D); 1791 glBindTexture(GL_TEXTURE_2D, tname); 1792 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1793 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1794 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1795 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1796 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1797 glVertexPointer(2, GL_FLOAT, 0, vtx); 1798 1799 class s_curve_interpolator { 1800 const float nbFrames, s, v; 1801 public: 1802 s_curve_interpolator(int nbFrames, float s) 1803 : nbFrames(1.0f / (nbFrames-1)), s(s), 1804 v(1.0f + expf(-s + 0.5f*s)) { 1805 } 1806 float operator()(int f) { 1807 const float x = f * nbFrames; 1808 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1809 } 1810 }; 1811 1812 class v_stretch { 1813 const GLfloat hw_w, hw_h; 1814 public: 1815 v_stretch(uint32_t hw_w, uint32_t hw_h) 1816 : hw_w(hw_w), hw_h(hw_h) { 1817 } 1818 void operator()(GLfloat* vtx, float v) { 1819 const GLfloat w = hw_w + (hw_w * v); 1820 const GLfloat h = hw_h - (hw_h * v); 1821 const GLfloat x = (hw_w - w) * 0.5f; 1822 const GLfloat y = (hw_h - h) * 0.5f; 1823 vtx[0] = x; vtx[1] = y; 1824 vtx[2] = x; vtx[3] = y + h; 1825 vtx[4] = x + w; vtx[5] = y + h; 1826 vtx[6] = x + w; vtx[7] = y; 1827 } 1828 }; 1829 1830 class h_stretch { 1831 const GLfloat hw_w, hw_h; 1832 public: 1833 h_stretch(uint32_t hw_w, uint32_t hw_h) 1834 : hw_w(hw_w), hw_h(hw_h) { 1835 } 1836 void operator()(GLfloat* vtx, float v) { 1837 const GLfloat w = hw_w - (hw_w * v); 1838 const GLfloat h = 1.0f; 1839 const GLfloat x = (hw_w - w) * 0.5f; 1840 const GLfloat y = (hw_h - h) * 0.5f; 1841 vtx[0] = x; vtx[1] = y; 1842 vtx[2] = x; vtx[3] = y + h; 1843 vtx[4] = x + w; vtx[5] = y + h; 1844 vtx[6] = x + w; vtx[7] = y; 1845 } 1846 }; 1847 1848 // the full animation is 24 frames 1849 const int nbFrames = 12; 1850 s_curve_interpolator itr(nbFrames, 7.5f); 1851 s_curve_interpolator itg(nbFrames, 8.0f); 1852 s_curve_interpolator itb(nbFrames, 8.5f); 1853 1854 v_stretch vverts(hw_w, hw_h); 1855 glEnable(GL_BLEND); 1856 glBlendFunc(GL_ONE, GL_ONE); 1857 for (int i=0 ; i<nbFrames ; i++) { 1858 float x, y, w, h; 1859 const float vr = itr(i); 1860 const float vg = itg(i); 1861 const float vb = itb(i); 1862 1863 // clear screen 1864 glColorMask(1,1,1,1); 1865 glClear(GL_COLOR_BUFFER_BIT); 1866 glEnable(GL_TEXTURE_2D); 1867 1868 // draw the red plane 1869 vverts(vtx, vr); 1870 glColorMask(1,0,0,1); 1871 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1872 1873 // draw the green plane 1874 vverts(vtx, vg); 1875 glColorMask(0,1,0,1); 1876 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1877 1878 // draw the blue plane 1879 vverts(vtx, vb); 1880 glColorMask(0,0,1,1); 1881 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1882 1883 // draw the white highlight (we use the last vertices) 1884 glDisable(GL_TEXTURE_2D); 1885 glColorMask(1,1,1,1); 1886 glColor4f(vg, vg, vg, 1); 1887 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1888 hw.flip(screenBounds); 1889 } 1890 1891 h_stretch hverts(hw_w, hw_h); 1892 glDisable(GL_BLEND); 1893 glDisable(GL_TEXTURE_2D); 1894 glColorMask(1,1,1,1); 1895 for (int i=0 ; i<nbFrames ; i++) { 1896 const float v = itg(i); 1897 hverts(vtx, v); 1898 glClear(GL_COLOR_BUFFER_BIT); 1899 glColor4f(1-v, 1-v, 1-v, 1); 1900 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1901 hw.flip(screenBounds); 1902 } 1903 1904 glColorMask(1,1,1,1); 1905 glEnable(GL_SCISSOR_TEST); 1906 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1907 glDeleteTextures(1, &tname); 1908 return NO_ERROR; 1909} 1910 1911status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1912{ 1913 status_t result = PERMISSION_DENIED; 1914 1915 if (!GLExtensions::getInstance().haveFramebufferObject()) 1916 return INVALID_OPERATION; 1917 1918 1919 // get screen geometry 1920 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1921 const uint32_t hw_w = hw.getWidth(); 1922 const uint32_t hw_h = hw.getHeight(); 1923 const Region screenBounds(hw.bounds()); 1924 1925 GLfloat u, v; 1926 GLuint tname; 1927 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1928 if (result != NO_ERROR) { 1929 return result; 1930 } 1931 1932 // back to main framebuffer 1933 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1934 glDisable(GL_SCISSOR_TEST); 1935 1936 GLfloat vtx[8]; 1937 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 1938 glEnable(GL_TEXTURE_2D); 1939 glBindTexture(GL_TEXTURE_2D, tname); 1940 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 1941 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1942 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1943 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1944 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1945 glVertexPointer(2, GL_FLOAT, 0, vtx); 1946 1947 class s_curve_interpolator { 1948 const float nbFrames, s, v; 1949 public: 1950 s_curve_interpolator(int nbFrames, float s) 1951 : nbFrames(1.0f / (nbFrames-1)), s(s), 1952 v(1.0f + expf(-s + 0.5f*s)) { 1953 } 1954 float operator()(int f) { 1955 const float x = f * nbFrames; 1956 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1957 } 1958 }; 1959 1960 class v_stretch { 1961 const GLfloat hw_w, hw_h; 1962 public: 1963 v_stretch(uint32_t hw_w, uint32_t hw_h) 1964 : hw_w(hw_w), hw_h(hw_h) { 1965 } 1966 void operator()(GLfloat* vtx, float v) { 1967 const GLfloat w = hw_w + (hw_w * v); 1968 const GLfloat h = hw_h - (hw_h * v); 1969 const GLfloat x = (hw_w - w) * 0.5f; 1970 const GLfloat y = (hw_h - h) * 0.5f; 1971 vtx[0] = x; vtx[1] = y; 1972 vtx[2] = x; vtx[3] = y + h; 1973 vtx[4] = x + w; vtx[5] = y + h; 1974 vtx[6] = x + w; vtx[7] = y; 1975 } 1976 }; 1977 1978 class h_stretch { 1979 const GLfloat hw_w, hw_h; 1980 public: 1981 h_stretch(uint32_t hw_w, uint32_t hw_h) 1982 : hw_w(hw_w), hw_h(hw_h) { 1983 } 1984 void operator()(GLfloat* vtx, float v) { 1985 const GLfloat w = hw_w - (hw_w * v); 1986 const GLfloat h = 1.0f; 1987 const GLfloat x = (hw_w - w) * 0.5f; 1988 const GLfloat y = (hw_h - h) * 0.5f; 1989 vtx[0] = x; vtx[1] = y; 1990 vtx[2] = x; vtx[3] = y + h; 1991 vtx[4] = x + w; vtx[5] = y + h; 1992 vtx[6] = x + w; vtx[7] = y; 1993 } 1994 }; 1995 1996 // the full animation is 12 frames 1997 int nbFrames = 8; 1998 s_curve_interpolator itr(nbFrames, 7.5f); 1999 s_curve_interpolator itg(nbFrames, 8.0f); 2000 s_curve_interpolator itb(nbFrames, 8.5f); 2001 2002 h_stretch hverts(hw_w, hw_h); 2003 glDisable(GL_BLEND); 2004 glDisable(GL_TEXTURE_2D); 2005 glColorMask(1,1,1,1); 2006 for (int i=nbFrames-1 ; i>=0 ; i--) { 2007 const float v = itg(i); 2008 hverts(vtx, v); 2009 glClear(GL_COLOR_BUFFER_BIT); 2010 glColor4f(1-v, 1-v, 1-v, 1); 2011 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2012 hw.flip(screenBounds); 2013 } 2014 2015 nbFrames = 4; 2016 v_stretch vverts(hw_w, hw_h); 2017 glEnable(GL_BLEND); 2018 glBlendFunc(GL_ONE, GL_ONE); 2019 for (int i=nbFrames-1 ; i>=0 ; i--) { 2020 float x, y, w, h; 2021 const float vr = itr(i); 2022 const float vg = itg(i); 2023 const float vb = itb(i); 2024 2025 // clear screen 2026 glColorMask(1,1,1,1); 2027 glClear(GL_COLOR_BUFFER_BIT); 2028 glEnable(GL_TEXTURE_2D); 2029 2030 // draw the red plane 2031 vverts(vtx, vr); 2032 glColorMask(1,0,0,1); 2033 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2034 2035 // draw the green plane 2036 vverts(vtx, vg); 2037 glColorMask(0,1,0,1); 2038 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2039 2040 // draw the blue plane 2041 vverts(vtx, vb); 2042 glColorMask(0,0,1,1); 2043 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2044 2045 hw.flip(screenBounds); 2046 } 2047 2048 glColorMask(1,1,1,1); 2049 glEnable(GL_SCISSOR_TEST); 2050 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2051 glDeleteTextures(1, &tname); 2052 2053 return NO_ERROR; 2054} 2055 2056// --------------------------------------------------------------------------- 2057 2058status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2059{ 2060 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2061 if (!hw.canDraw()) { 2062 // we're already off 2063 return NO_ERROR; 2064 } 2065 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2066 electronBeamOffAnimationImplLocked(); 2067 } 2068 2069 // always clear the whole screen at the end of the animation 2070 glClearColor(0,0,0,1); 2071 glDisable(GL_SCISSOR_TEST); 2072 glClear(GL_COLOR_BUFFER_BIT); 2073 glEnable(GL_SCISSOR_TEST); 2074 hw.flip( Region(hw.bounds()) ); 2075 2076 hw.setCanDraw(false); 2077 return NO_ERROR; 2078} 2079 2080status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2081{ 2082 class MessageTurnElectronBeamOff : public MessageBase { 2083 SurfaceFlinger* flinger; 2084 int32_t mode; 2085 status_t result; 2086 public: 2087 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2088 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2089 } 2090 status_t getResult() const { 2091 return result; 2092 } 2093 virtual bool handler() { 2094 Mutex::Autolock _l(flinger->mStateLock); 2095 result = flinger->turnElectronBeamOffImplLocked(mode); 2096 return true; 2097 } 2098 }; 2099 2100 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2101 status_t res = postMessageSync(msg); 2102 if (res == NO_ERROR) { 2103 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2104 2105 // work-around: when the power-manager calls us we activate the 2106 // animation. eventually, the "on" animation will be called 2107 // by the power-manager itself 2108 mElectronBeamAnimationMode = mode; 2109 } 2110 return res; 2111} 2112 2113// --------------------------------------------------------------------------- 2114 2115status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2116{ 2117 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2118 if (hw.canDraw()) { 2119 // we're already on 2120 return NO_ERROR; 2121 } 2122 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2123 electronBeamOnAnimationImplLocked(); 2124 } 2125 hw.setCanDraw(true); 2126 2127 // make sure to redraw the whole screen when the animation is done 2128 mDirtyRegion.set(hw.bounds()); 2129 signalEvent(); 2130 2131 return NO_ERROR; 2132} 2133 2134status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2135{ 2136 class MessageTurnElectronBeamOn : public MessageBase { 2137 SurfaceFlinger* flinger; 2138 int32_t mode; 2139 status_t result; 2140 public: 2141 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2142 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2143 } 2144 status_t getResult() const { 2145 return result; 2146 } 2147 virtual bool handler() { 2148 Mutex::Autolock _l(flinger->mStateLock); 2149 result = flinger->turnElectronBeamOnImplLocked(mode); 2150 return true; 2151 } 2152 }; 2153 2154 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2155 return NO_ERROR; 2156} 2157 2158// --------------------------------------------------------------------------- 2159 2160status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2161 sp<IMemoryHeap>* heap, 2162 uint32_t* w, uint32_t* h, PixelFormat* f, 2163 uint32_t sw, uint32_t sh, 2164 uint32_t minLayerZ, uint32_t maxLayerZ) 2165{ 2166 status_t result = PERMISSION_DENIED; 2167 2168 // only one display supported for now 2169 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2170 return BAD_VALUE; 2171 2172 if (!GLExtensions::getInstance().haveFramebufferObject()) 2173 return INVALID_OPERATION; 2174 2175 // get screen geometry 2176 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2177 const uint32_t hw_w = hw.getWidth(); 2178 const uint32_t hw_h = hw.getHeight(); 2179 2180 if ((sw > hw_w) || (sh > hw_h)) 2181 return BAD_VALUE; 2182 2183 sw = (!sw) ? hw_w : sw; 2184 sh = (!sh) ? hw_h : sh; 2185 const size_t size = sw * sh * 4; 2186 2187 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2188 // sw, sh, minLayerZ, maxLayerZ); 2189 2190 // make sure to clear all GL error flags 2191 while ( glGetError() != GL_NO_ERROR ) ; 2192 2193 // create a FBO 2194 GLuint name, tname; 2195 glGenRenderbuffersOES(1, &tname); 2196 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2197 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2198 glGenFramebuffersOES(1, &name); 2199 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2200 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2201 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2202 2203 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2204 2205 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2206 2207 // invert everything, b/c glReadPixel() below will invert the FB 2208 glViewport(0, 0, sw, sh); 2209 glScissor(0, 0, sw, sh); 2210 glMatrixMode(GL_PROJECTION); 2211 glPushMatrix(); 2212 glLoadIdentity(); 2213 glOrthof(0, hw_w, 0, hw_h, 0, 1); 2214 glMatrixMode(GL_MODELVIEW); 2215 2216 // redraw the screen entirely... 2217 glClearColor(0,0,0,1); 2218 glClear(GL_COLOR_BUFFER_BIT); 2219 2220 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 2221 const size_t count = layers.size(); 2222 for (size_t i=0 ; i<count ; ++i) { 2223 const sp<LayerBase>& layer(layers[i]); 2224 const uint32_t z = layer->drawingState().z; 2225 if (z >= minLayerZ && z <= maxLayerZ) { 2226 layer->drawForSreenShot(); 2227 } 2228 } 2229 2230 // XXX: this is needed on tegra 2231 glScissor(0, 0, sw, sh); 2232 2233 // check for errors and return screen capture 2234 if (glGetError() != GL_NO_ERROR) { 2235 // error while rendering 2236 result = INVALID_OPERATION; 2237 } else { 2238 // allocate shared memory large enough to hold the 2239 // screen capture 2240 sp<MemoryHeapBase> base( 2241 new MemoryHeapBase(size, 0, "screen-capture") ); 2242 void* const ptr = base->getBase(); 2243 if (ptr) { 2244 // capture the screen with glReadPixels() 2245 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2246 if (glGetError() == GL_NO_ERROR) { 2247 *heap = base; 2248 *w = sw; 2249 *h = sh; 2250 *f = PIXEL_FORMAT_RGBA_8888; 2251 result = NO_ERROR; 2252 } 2253 } else { 2254 result = NO_MEMORY; 2255 } 2256 } 2257 glEnable(GL_SCISSOR_TEST); 2258 glViewport(0, 0, hw_w, hw_h); 2259 glMatrixMode(GL_PROJECTION); 2260 glPopMatrix(); 2261 glMatrixMode(GL_MODELVIEW); 2262 } else { 2263 result = BAD_VALUE; 2264 } 2265 2266 // release FBO resources 2267 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2268 glDeleteRenderbuffersOES(1, &tname); 2269 glDeleteFramebuffersOES(1, &name); 2270 2271 hw.compositionComplete(); 2272 2273 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2274 2275 return result; 2276} 2277 2278 2279status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2280 sp<IMemoryHeap>* heap, 2281 uint32_t* width, uint32_t* height, PixelFormat* format, 2282 uint32_t sw, uint32_t sh, 2283 uint32_t minLayerZ, uint32_t maxLayerZ) 2284{ 2285 // only one display supported for now 2286 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2287 return BAD_VALUE; 2288 2289 if (!GLExtensions::getInstance().haveFramebufferObject()) 2290 return INVALID_OPERATION; 2291 2292 class MessageCaptureScreen : public MessageBase { 2293 SurfaceFlinger* flinger; 2294 DisplayID dpy; 2295 sp<IMemoryHeap>* heap; 2296 uint32_t* w; 2297 uint32_t* h; 2298 PixelFormat* f; 2299 uint32_t sw; 2300 uint32_t sh; 2301 uint32_t minLayerZ; 2302 uint32_t maxLayerZ; 2303 status_t result; 2304 public: 2305 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2306 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2307 uint32_t sw, uint32_t sh, 2308 uint32_t minLayerZ, uint32_t maxLayerZ) 2309 : flinger(flinger), dpy(dpy), 2310 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2311 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2312 result(PERMISSION_DENIED) 2313 { 2314 } 2315 status_t getResult() const { 2316 return result; 2317 } 2318 virtual bool handler() { 2319 Mutex::Autolock _l(flinger->mStateLock); 2320 2321 // if we have secure windows, never allow the screen capture 2322 if (flinger->mSecureFrameBuffer) 2323 return true; 2324 2325 result = flinger->captureScreenImplLocked(dpy, 2326 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2327 2328 return true; 2329 } 2330 }; 2331 2332 sp<MessageBase> msg = new MessageCaptureScreen(this, 2333 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2334 status_t res = postMessageSync(msg); 2335 if (res == NO_ERROR) { 2336 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2337 } 2338 return res; 2339} 2340 2341// --------------------------------------------------------------------------- 2342 2343sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2344{ 2345 sp<Layer> result; 2346 Mutex::Autolock _l(mStateLock); 2347 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2348 return result; 2349} 2350 2351// --------------------------------------------------------------------------- 2352 2353Client::Client(const sp<SurfaceFlinger>& flinger) 2354 : mFlinger(flinger), mNameGenerator(1) 2355{ 2356} 2357 2358Client::~Client() 2359{ 2360 const size_t count = mLayers.size(); 2361 for (size_t i=0 ; i<count ; i++) { 2362 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2363 if (layer != 0) { 2364 mFlinger->removeLayer(layer); 2365 } 2366 } 2367} 2368 2369status_t Client::initCheck() const { 2370 return NO_ERROR; 2371} 2372 2373ssize_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2374{ 2375 int32_t name = android_atomic_inc(&mNameGenerator); 2376 mLayers.add(name, layer); 2377 return name; 2378} 2379 2380void Client::detachLayer(const LayerBaseClient* layer) 2381{ 2382 // we do a linear search here, because this doesn't happen often 2383 const size_t count = mLayers.size(); 2384 for (size_t i=0 ; i<count ; i++) { 2385 if (mLayers.valueAt(i) == layer) { 2386 mLayers.removeItemsAt(i, 1); 2387 break; 2388 } 2389 } 2390} 2391sp<LayerBaseClient> Client::getLayerUser(int32_t i) const { 2392 sp<LayerBaseClient> lbc; 2393 const wp<LayerBaseClient>& layer(mLayers.valueFor(i)); 2394 if (layer != 0) { 2395 lbc = layer.promote(); 2396 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2397 } 2398 return lbc; 2399} 2400 2401sp<IMemoryHeap> Client::getControlBlock() const { 2402 return 0; 2403} 2404ssize_t Client::getTokenForSurface(const sp<ISurface>& sur) const { 2405 return -1; 2406} 2407sp<ISurface> Client::createSurface( 2408 ISurfaceComposerClient::surface_data_t* params, int pid, 2409 const String8& name, 2410 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2411 uint32_t flags) 2412{ 2413 return mFlinger->createSurface(this, pid, name, params, 2414 display, w, h, format, flags); 2415} 2416status_t Client::destroySurface(SurfaceID sid) { 2417 return mFlinger->removeSurface(this, sid); 2418} 2419status_t Client::setState(int32_t count, const layer_state_t* states) { 2420 return mFlinger->setClientState(this, count, states); 2421} 2422 2423// --------------------------------------------------------------------------- 2424 2425UserClient::UserClient(const sp<SurfaceFlinger>& flinger) 2426 : ctrlblk(0), mBitmap(0), mFlinger(flinger) 2427{ 2428 const int pgsize = getpagesize(); 2429 const int cblksize = ((sizeof(SharedClient)+(pgsize-1))&~(pgsize-1)); 2430 2431 mCblkHeap = new MemoryHeapBase(cblksize, 0, 2432 "SurfaceFlinger Client control-block"); 2433 2434 ctrlblk = static_cast<SharedClient *>(mCblkHeap->getBase()); 2435 if (ctrlblk) { // construct the shared structure in-place. 2436 new(ctrlblk) SharedClient; 2437 } 2438} 2439 2440UserClient::~UserClient() 2441{ 2442 if (ctrlblk) { 2443 ctrlblk->~SharedClient(); // destroy our shared-structure. 2444 } 2445 2446 /* 2447 * When a UserClient dies, it's unclear what to do exactly. 2448 * We could go ahead and destroy all surfaces linked to that client 2449 * however, it wouldn't be fair to the main Client 2450 * (usually the the window-manager), which might want to re-target 2451 * the layer to another UserClient. 2452 * I think the best is to do nothing, or not much; in most cases the 2453 * WM itself will go ahead and clean things up when it detects a client of 2454 * his has died. 2455 * The remaining question is what to display? currently we keep 2456 * just keep the current buffer. 2457 */ 2458} 2459 2460status_t UserClient::initCheck() const { 2461 return ctrlblk == 0 ? NO_INIT : NO_ERROR; 2462} 2463 2464void UserClient::detachLayer(const Layer* layer) 2465{ 2466 int32_t name = layer->getToken(); 2467 if (name >= 0) { 2468 int32_t mask = 1LU<<name; 2469 if ((android_atomic_and(~mask, &mBitmap) & mask) == 0) { 2470 LOGW("token %d wasn't marked as used %08x", name, int(mBitmap)); 2471 } 2472 } 2473} 2474 2475sp<IMemoryHeap> UserClient::getControlBlock() const { 2476 return mCblkHeap; 2477} 2478 2479ssize_t UserClient::getTokenForSurface(const sp<ISurface>& sur) const 2480{ 2481 int32_t name = NAME_NOT_FOUND; 2482 sp<Layer> layer(mFlinger->getLayer(sur)); 2483 if (layer == 0) { 2484 return name; 2485 } 2486 2487 // if this layer already has a token, just return it 2488 name = layer->getToken(); 2489 if ((name >= 0) && (layer->getClient() == this)) { 2490 return name; 2491 } 2492 2493 name = 0; 2494 do { 2495 int32_t mask = 1LU<<name; 2496 if ((android_atomic_or(mask, &mBitmap) & mask) == 0) { 2497 // we found and locked that name 2498 status_t err = layer->setToken( 2499 const_cast<UserClient*>(this), ctrlblk, name); 2500 if (err != NO_ERROR) { 2501 // free the name 2502 android_atomic_and(~mask, &mBitmap); 2503 name = err; 2504 } 2505 break; 2506 } 2507 if (++name >= SharedBufferStack::NUM_LAYERS_MAX) 2508 name = NO_MEMORY; 2509 } while(name >= 0); 2510 2511 //LOGD("getTokenForSurface(%p) => %d (client=%p, bitmap=%08lx)", 2512 // sur->asBinder().get(), name, this, mBitmap); 2513 return name; 2514} 2515 2516sp<ISurface> UserClient::createSurface( 2517 ISurfaceComposerClient::surface_data_t* params, int pid, 2518 const String8& name, 2519 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2520 uint32_t flags) { 2521 return 0; 2522} 2523status_t UserClient::destroySurface(SurfaceID sid) { 2524 return INVALID_OPERATION; 2525} 2526status_t UserClient::setState(int32_t count, const layer_state_t* states) { 2527 return INVALID_OPERATION; 2528} 2529 2530// --------------------------------------------------------------------------- 2531 2532GraphicBufferAlloc::GraphicBufferAlloc() {} 2533 2534GraphicBufferAlloc::~GraphicBufferAlloc() {} 2535 2536sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2537 PixelFormat format, uint32_t usage) { 2538 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2539 status_t err = graphicBuffer->initCheck(); 2540 if (err != 0) { 2541 LOGE("createGraphicBuffer: init check failed: %d", err); 2542 return 0; 2543 } else if (graphicBuffer->handle == 0) { 2544 LOGE("createGraphicBuffer: unable to create GraphicBuffer"); 2545 return 0; 2546 } 2547 Mutex::Autolock _l(mLock); 2548 mBuffers.add(graphicBuffer); 2549 return graphicBuffer; 2550} 2551 2552void GraphicBufferAlloc::freeAllGraphicBuffersExcept(int bufIdx) { 2553 Mutex::Autolock _l(mLock); 2554 if (0 <= bufIdx && bufIdx < mBuffers.size()) { 2555 sp<GraphicBuffer> b(mBuffers[bufIdx]); 2556 mBuffers.clear(); 2557 mBuffers.add(b); 2558 } else { 2559 mBuffers.clear(); 2560 } 2561} 2562 2563// --------------------------------------------------------------------------- 2564 2565GraphicPlane::GraphicPlane() 2566 : mHw(0) 2567{ 2568} 2569 2570GraphicPlane::~GraphicPlane() { 2571 delete mHw; 2572} 2573 2574bool GraphicPlane::initialized() const { 2575 return mHw ? true : false; 2576} 2577 2578int GraphicPlane::getWidth() const { 2579 return mWidth; 2580} 2581 2582int GraphicPlane::getHeight() const { 2583 return mHeight; 2584} 2585 2586void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2587{ 2588 mHw = hw; 2589 2590 // initialize the display orientation transform. 2591 // it's a constant that should come from the display driver. 2592 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2593 char property[PROPERTY_VALUE_MAX]; 2594 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2595 //displayOrientation 2596 switch (atoi(property)) { 2597 case 90: 2598 displayOrientation = ISurfaceComposer::eOrientation90; 2599 break; 2600 case 270: 2601 displayOrientation = ISurfaceComposer::eOrientation270; 2602 break; 2603 } 2604 } 2605 2606 const float w = hw->getWidth(); 2607 const float h = hw->getHeight(); 2608 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2609 &mDisplayTransform); 2610 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2611 mDisplayWidth = h; 2612 mDisplayHeight = w; 2613 } else { 2614 mDisplayWidth = w; 2615 mDisplayHeight = h; 2616 } 2617 2618 setOrientation(ISurfaceComposer::eOrientationDefault); 2619} 2620 2621status_t GraphicPlane::orientationToTransfrom( 2622 int orientation, int w, int h, Transform* tr) 2623{ 2624 uint32_t flags = 0; 2625 switch (orientation) { 2626 case ISurfaceComposer::eOrientationDefault: 2627 flags = Transform::ROT_0; 2628 break; 2629 case ISurfaceComposer::eOrientation90: 2630 flags = Transform::ROT_90; 2631 break; 2632 case ISurfaceComposer::eOrientation180: 2633 flags = Transform::ROT_180; 2634 break; 2635 case ISurfaceComposer::eOrientation270: 2636 flags = Transform::ROT_270; 2637 break; 2638 default: 2639 return BAD_VALUE; 2640 } 2641 tr->set(flags, w, h); 2642 return NO_ERROR; 2643} 2644 2645status_t GraphicPlane::setOrientation(int orientation) 2646{ 2647 // If the rotation can be handled in hardware, this is where 2648 // the magic should happen. 2649 2650 const DisplayHardware& hw(displayHardware()); 2651 const float w = mDisplayWidth; 2652 const float h = mDisplayHeight; 2653 mWidth = int(w); 2654 mHeight = int(h); 2655 2656 Transform orientationTransform; 2657 GraphicPlane::orientationToTransfrom(orientation, w, h, 2658 &orientationTransform); 2659 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2660 mWidth = int(h); 2661 mHeight = int(w); 2662 } 2663 2664 mOrientation = orientation; 2665 mGlobalTransform = mDisplayTransform * orientationTransform; 2666 return NO_ERROR; 2667} 2668 2669const DisplayHardware& GraphicPlane::displayHardware() const { 2670 return *mHw; 2671} 2672 2673DisplayHardware& GraphicPlane::editDisplayHardware() { 2674 return *mHw; 2675} 2676 2677const Transform& GraphicPlane::transform() const { 2678 return mGlobalTransform; 2679} 2680 2681EGLDisplay GraphicPlane::getEGLDisplay() const { 2682 return mHw->getEGLDisplay(); 2683} 2684 2685// --------------------------------------------------------------------------- 2686 2687}; // namespace android 2688