SurfaceFlinger.cpp revision 0dfb7b73a468698622d6c0423f0d5471a6f5d375
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdlib.h> 18#include <stdio.h> 19#include <stdint.h> 20#include <unistd.h> 21#include <fcntl.h> 22#include <errno.h> 23#include <math.h> 24#include <limits.h> 25#include <sys/types.h> 26#include <sys/stat.h> 27#include <sys/ioctl.h> 28 29#include <cutils/log.h> 30#include <cutils/properties.h> 31 32#include <binder/IPCThreadState.h> 33#include <binder/IServiceManager.h> 34#include <binder/MemoryHeapBase.h> 35#include <binder/PermissionCache.h> 36 37#include <utils/String8.h> 38#include <utils/String16.h> 39#include <utils/StopWatch.h> 40 41#include <ui/GraphicBufferAllocator.h> 42#include <ui/GraphicLog.h> 43#include <ui/PixelFormat.h> 44 45#include <pixelflinger/pixelflinger.h> 46#include <GLES/gl.h> 47 48#include "clz.h" 49#include "GLExtensions.h" 50#include "DdmConnection.h" 51#include "Layer.h" 52#include "LayerDim.h" 53#include "LayerScreenshot.h" 54#include "SurfaceFlinger.h" 55 56#include "DisplayHardware/DisplayHardware.h" 57#include "DisplayHardware/HWComposer.h" 58 59#include <private/surfaceflinger/SharedBufferStack.h> 60 61/* ideally AID_GRAPHICS would be in a semi-public header 62 * or there would be a way to map a user/group name to its id 63 */ 64#ifndef AID_GRAPHICS 65#define AID_GRAPHICS 1003 66#endif 67 68#define DISPLAY_COUNT 1 69 70namespace android { 71// --------------------------------------------------------------------------- 72 73const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 74const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 75const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 76const String16 sDump("android.permission.DUMP"); 77 78// --------------------------------------------------------------------------- 79 80SurfaceFlinger::SurfaceFlinger() 81 : BnSurfaceComposer(), Thread(false), 82 mTransactionFlags(0), 83 mResizeTransationPending(false), 84 mLayersRemoved(false), 85 mBootTime(systemTime()), 86 mVisibleRegionsDirty(false), 87 mHwWorkListDirty(false), 88 mFreezeDisplay(false), 89 mElectronBeamAnimationMode(0), 90 mFreezeCount(0), 91 mFreezeDisplayTime(0), 92 mDebugRegion(0), 93 mDebugBackground(0), 94 mDebugDDMS(0), 95 mDebugDisableHWC(0), 96 mDebugDisableTransformHint(0), 97 mDebugInSwapBuffers(0), 98 mLastSwapBufferTime(0), 99 mDebugInTransaction(0), 100 mLastTransactionTime(0), 101 mBootFinished(false), 102 mConsoleSignals(0), 103 mSecureFrameBuffer(0) 104{ 105 init(); 106} 107 108void SurfaceFlinger::init() 109{ 110 LOGI("SurfaceFlinger is starting"); 111 112 // debugging stuff... 113 char value[PROPERTY_VALUE_MAX]; 114 115 property_get("debug.sf.showupdates", value, "0"); 116 mDebugRegion = atoi(value); 117 118 property_get("debug.sf.showbackground", value, "0"); 119 mDebugBackground = atoi(value); 120 121 property_get("debug.sf.ddms", value, "0"); 122 mDebugDDMS = atoi(value); 123 if (mDebugDDMS) { 124 DdmConnection::start(getServiceName()); 125 } 126 127 LOGI_IF(mDebugRegion, "showupdates enabled"); 128 LOGI_IF(mDebugBackground, "showbackground enabled"); 129 LOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 130} 131 132SurfaceFlinger::~SurfaceFlinger() 133{ 134 glDeleteTextures(1, &mWormholeTexName); 135} 136 137sp<IMemoryHeap> SurfaceFlinger::getCblk() const 138{ 139 return mServerHeap; 140} 141 142sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 143{ 144 sp<ISurfaceComposerClient> bclient; 145 sp<Client> client(new Client(this)); 146 status_t err = client->initCheck(); 147 if (err == NO_ERROR) { 148 bclient = client; 149 } 150 return bclient; 151} 152 153sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 154{ 155 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 156 return gba; 157} 158 159const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 160{ 161 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 162 const GraphicPlane& plane(mGraphicPlanes[dpy]); 163 return plane; 164} 165 166GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 167{ 168 return const_cast<GraphicPlane&>( 169 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 170} 171 172void SurfaceFlinger::bootFinished() 173{ 174 const nsecs_t now = systemTime(); 175 const nsecs_t duration = now - mBootTime; 176 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 177 mBootFinished = true; 178 179 // wait patiently for the window manager death 180 const String16 name("window"); 181 sp<IBinder> window(defaultServiceManager()->getService(name)); 182 if (window != 0) { 183 window->linkToDeath(this); 184 } 185 186 // stop boot animation 187 property_set("ctl.stop", "bootanim"); 188} 189 190void SurfaceFlinger::binderDied(const wp<IBinder>& who) 191{ 192 // the window manager died on us. prepare its eulogy. 193 194 // unfreeze the screen in case it was... frozen 195 mFreezeDisplayTime = 0; 196 mFreezeCount = 0; 197 mFreezeDisplay = false; 198 199 // reset screen orientation 200 setOrientation(0, eOrientationDefault, 0); 201 202 // restart the boot-animation 203 property_set("ctl.start", "bootanim"); 204} 205 206void SurfaceFlinger::onFirstRef() 207{ 208 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 209 210 // Wait for the main thread to be done with its initialization 211 mReadyToRunBarrier.wait(); 212} 213 214static inline uint16_t pack565(int r, int g, int b) { 215 return (r<<11)|(g<<5)|b; 216} 217 218status_t SurfaceFlinger::readyToRun() 219{ 220 LOGI( "SurfaceFlinger's main thread ready to run. " 221 "Initializing graphics H/W..."); 222 223 // we only support one display currently 224 int dpy = 0; 225 226 { 227 // initialize the main display 228 GraphicPlane& plane(graphicPlane(dpy)); 229 DisplayHardware* const hw = new DisplayHardware(this, dpy); 230 plane.setDisplayHardware(hw); 231 } 232 233 // create the shared control-block 234 mServerHeap = new MemoryHeapBase(4096, 235 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 236 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 237 238 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 239 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 240 241 new(mServerCblk) surface_flinger_cblk_t; 242 243 // initialize primary screen 244 // (other display should be initialized in the same manner, but 245 // asynchronously, as they could come and go. None of this is supported 246 // yet). 247 const GraphicPlane& plane(graphicPlane(dpy)); 248 const DisplayHardware& hw = plane.displayHardware(); 249 const uint32_t w = hw.getWidth(); 250 const uint32_t h = hw.getHeight(); 251 const uint32_t f = hw.getFormat(); 252 hw.makeCurrent(); 253 254 // initialize the shared control block 255 mServerCblk->connected |= 1<<dpy; 256 display_cblk_t* dcblk = mServerCblk->displays + dpy; 257 memset(dcblk, 0, sizeof(display_cblk_t)); 258 dcblk->w = plane.getWidth(); 259 dcblk->h = plane.getHeight(); 260 dcblk->format = f; 261 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 262 dcblk->xdpi = hw.getDpiX(); 263 dcblk->ydpi = hw.getDpiY(); 264 dcblk->fps = hw.getRefreshRate(); 265 dcblk->density = hw.getDensity(); 266 267 // Initialize OpenGL|ES 268 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 269 glPixelStorei(GL_PACK_ALIGNMENT, 4); 270 glEnableClientState(GL_VERTEX_ARRAY); 271 glEnable(GL_SCISSOR_TEST); 272 glShadeModel(GL_FLAT); 273 glDisable(GL_DITHER); 274 glDisable(GL_CULL_FACE); 275 276 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 277 const uint16_t g1 = pack565(0x17,0x2f,0x17); 278 const uint16_t wormholeTexData[4] = { g0, g1, g1, g0 }; 279 glGenTextures(1, &mWormholeTexName); 280 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 281 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 282 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 283 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 284 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 285 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 286 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, wormholeTexData); 287 288 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 289 glGenTextures(1, &mProtectedTexName); 290 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 291 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 292 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 293 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 294 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 295 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 296 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 297 298 glViewport(0, 0, w, h); 299 glMatrixMode(GL_PROJECTION); 300 glLoadIdentity(); 301 // put the origin in the left-bottom corner 302 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 303 304 mReadyToRunBarrier.open(); 305 306 /* 307 * We're now ready to accept clients... 308 */ 309 310 // start boot animation 311 property_set("ctl.start", "bootanim"); 312 313 return NO_ERROR; 314} 315 316// ---------------------------------------------------------------------------- 317#if 0 318#pragma mark - 319#pragma mark Events Handler 320#endif 321 322void SurfaceFlinger::waitForEvent() 323{ 324 while (true) { 325 nsecs_t timeout = -1; 326 const nsecs_t freezeDisplayTimeout = ms2ns(5000); 327 if (UNLIKELY(isFrozen())) { 328 // wait 5 seconds 329 const nsecs_t now = systemTime(); 330 if (mFreezeDisplayTime == 0) { 331 mFreezeDisplayTime = now; 332 } 333 nsecs_t waitTime = freezeDisplayTimeout - (now - mFreezeDisplayTime); 334 timeout = waitTime>0 ? waitTime : 0; 335 } 336 337 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 338 339 // see if we timed out 340 if (isFrozen()) { 341 const nsecs_t now = systemTime(); 342 nsecs_t frozenTime = (now - mFreezeDisplayTime); 343 if (frozenTime >= freezeDisplayTimeout) { 344 // we timed out and are still frozen 345 LOGW("timeout expired mFreezeDisplay=%d, mFreezeCount=%d", 346 mFreezeDisplay, mFreezeCount); 347 mFreezeDisplayTime = 0; 348 mFreezeCount = 0; 349 mFreezeDisplay = false; 350 } 351 } 352 353 if (msg != 0) { 354 switch (msg->what) { 355 case MessageQueue::INVALIDATE: 356 // invalidate message, just return to the main loop 357 return; 358 } 359 } 360 } 361} 362 363void SurfaceFlinger::signalEvent() { 364 mEventQueue.invalidate(); 365} 366 367bool SurfaceFlinger::authenticateSurfaceTexture( 368 const sp<ISurfaceTexture>& surfaceTexture) const { 369 Mutex::Autolock _l(mStateLock); 370 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 371 372 // Check the visible layer list for the ISurface 373 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 374 size_t count = currentLayers.size(); 375 for (size_t i=0 ; i<count ; i++) { 376 const sp<LayerBase>& layer(currentLayers[i]); 377 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 378 if (lbc != NULL) { 379 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 380 if (lbcBinder == surfaceTextureBinder) { 381 return true; 382 } 383 } 384 } 385 386 // Check the layers in the purgatory. This check is here so that if a 387 // SurfaceTexture gets destroyed before all the clients are done using it, 388 // the error will not be reported as "surface XYZ is not authenticated", but 389 // will instead fail later on when the client tries to use the surface, 390 // which should be reported as "surface XYZ returned an -ENODEV". The 391 // purgatorized layers are no less authentic than the visible ones, so this 392 // should not cause any harm. 393 size_t purgatorySize = mLayerPurgatory.size(); 394 for (size_t i=0 ; i<purgatorySize ; i++) { 395 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 396 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 397 if (lbc != NULL) { 398 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 399 if (lbcBinder == surfaceTextureBinder) { 400 return true; 401 } 402 } 403 } 404 405 return false; 406} 407 408status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 409 nsecs_t reltime, uint32_t flags) 410{ 411 return mEventQueue.postMessage(msg, reltime, flags); 412} 413 414status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 415 nsecs_t reltime, uint32_t flags) 416{ 417 status_t res = mEventQueue.postMessage(msg, reltime, flags); 418 if (res == NO_ERROR) { 419 msg->wait(); 420 } 421 return res; 422} 423 424// ---------------------------------------------------------------------------- 425#if 0 426#pragma mark - 427#pragma mark Main loop 428#endif 429 430bool SurfaceFlinger::threadLoop() 431{ 432 waitForEvent(); 433 434 // check for transactions 435 if (UNLIKELY(mConsoleSignals)) { 436 handleConsoleEvents(); 437 } 438 439 // if we're in a global transaction, don't do anything. 440 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 441 uint32_t transactionFlags = peekTransactionFlags(mask); 442 if (UNLIKELY(transactionFlags)) { 443 handleTransaction(transactionFlags); 444 } 445 446 // post surfaces (if needed) 447 handlePageFlip(); 448 449 if (mDirtyRegion.isEmpty()) { 450 // nothing new to do. 451 return true; 452 } 453 454 if (UNLIKELY(mHwWorkListDirty)) { 455 // build the h/w work list 456 handleWorkList(); 457 } 458 459 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 460 if (LIKELY(hw.canDraw())) { 461 // repaint the framebuffer (if needed) 462 463 const int index = hw.getCurrentBufferIndex(); 464 GraphicLog& logger(GraphicLog::getInstance()); 465 466 logger.log(GraphicLog::SF_REPAINT, index); 467 handleRepaint(); 468 469 // inform the h/w that we're done compositing 470 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 471 hw.compositionComplete(); 472 473 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 474 postFramebuffer(); 475 476 logger.log(GraphicLog::SF_REPAINT_DONE, index); 477 } else { 478 // pretend we did the post 479 hw.compositionComplete(); 480 usleep(16667); // 60 fps period 481 } 482 return true; 483} 484 485void SurfaceFlinger::postFramebuffer() 486{ 487 // this should never happen. we do the flip anyways so we don't 488 // risk to cause a deadlock with hwc 489 LOGW_IF(mSwapRegion.isEmpty(), "mSwapRegion is empty"); 490 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 491 const nsecs_t now = systemTime(); 492 mDebugInSwapBuffers = now; 493 hw.flip(mSwapRegion); 494 mLastSwapBufferTime = systemTime() - now; 495 mDebugInSwapBuffers = 0; 496 mSwapRegion.clear(); 497} 498 499void SurfaceFlinger::handleConsoleEvents() 500{ 501 // something to do with the console 502 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 503 504 int what = android_atomic_and(0, &mConsoleSignals); 505 if (what & eConsoleAcquired) { 506 hw.acquireScreen(); 507 // this is a temporary work-around, eventually this should be called 508 // by the power-manager 509 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 510 } 511 512 if (what & eConsoleReleased) { 513 if (hw.isScreenAcquired()) { 514 hw.releaseScreen(); 515 } 516 } 517 518 mDirtyRegion.set(hw.bounds()); 519} 520 521void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 522{ 523 Mutex::Autolock _l(mStateLock); 524 const nsecs_t now = systemTime(); 525 mDebugInTransaction = now; 526 527 // Here we're guaranteed that some transaction flags are set 528 // so we can call handleTransactionLocked() unconditionally. 529 // We call getTransactionFlags(), which will also clear the flags, 530 // with mStateLock held to guarantee that mCurrentState won't change 531 // until the transaction is committed. 532 533 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 534 transactionFlags = getTransactionFlags(mask); 535 handleTransactionLocked(transactionFlags); 536 537 mLastTransactionTime = systemTime() - now; 538 mDebugInTransaction = 0; 539 invalidateHwcGeometry(); 540 // here the transaction has been committed 541} 542 543void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 544{ 545 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 546 const size_t count = currentLayers.size(); 547 548 /* 549 * Traversal of the children 550 * (perform the transaction for each of them if needed) 551 */ 552 553 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 554 if (layersNeedTransaction) { 555 for (size_t i=0 ; i<count ; i++) { 556 const sp<LayerBase>& layer = currentLayers[i]; 557 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 558 if (!trFlags) continue; 559 560 const uint32_t flags = layer->doTransaction(0); 561 if (flags & Layer::eVisibleRegion) 562 mVisibleRegionsDirty = true; 563 } 564 } 565 566 /* 567 * Perform our own transaction if needed 568 */ 569 570 if (transactionFlags & eTransactionNeeded) { 571 if (mCurrentState.orientation != mDrawingState.orientation) { 572 // the orientation has changed, recompute all visible regions 573 // and invalidate everything. 574 575 const int dpy = 0; 576 const int orientation = mCurrentState.orientation; 577 // Currently unused: const uint32_t flags = mCurrentState.orientationFlags; 578 GraphicPlane& plane(graphicPlane(dpy)); 579 plane.setOrientation(orientation); 580 581 // update the shared control block 582 const DisplayHardware& hw(plane.displayHardware()); 583 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 584 dcblk->orientation = orientation; 585 dcblk->w = plane.getWidth(); 586 dcblk->h = plane.getHeight(); 587 588 mVisibleRegionsDirty = true; 589 mDirtyRegion.set(hw.bounds()); 590 } 591 592 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 593 // freezing or unfreezing the display -> trigger animation if needed 594 mFreezeDisplay = mCurrentState.freezeDisplay; 595 if (mFreezeDisplay) 596 mFreezeDisplayTime = 0; 597 } 598 599 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 600 // layers have been added 601 mVisibleRegionsDirty = true; 602 } 603 604 // some layers might have been removed, so 605 // we need to update the regions they're exposing. 606 if (mLayersRemoved) { 607 mLayersRemoved = false; 608 mVisibleRegionsDirty = true; 609 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 610 const size_t count = previousLayers.size(); 611 for (size_t i=0 ; i<count ; i++) { 612 const sp<LayerBase>& layer(previousLayers[i]); 613 if (currentLayers.indexOf( layer ) < 0) { 614 // this layer is not visible anymore 615 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 616 } 617 } 618 } 619 } 620 621 commitTransaction(); 622} 623 624sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 625{ 626 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 627} 628 629void SurfaceFlinger::computeVisibleRegions( 630 const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 631{ 632 const GraphicPlane& plane(graphicPlane(0)); 633 const Transform& planeTransform(plane.transform()); 634 const DisplayHardware& hw(plane.displayHardware()); 635 const Region screenRegion(hw.bounds()); 636 637 Region aboveOpaqueLayers; 638 Region aboveCoveredLayers; 639 Region dirty; 640 641 bool secureFrameBuffer = false; 642 643 size_t i = currentLayers.size(); 644 while (i--) { 645 const sp<LayerBase>& layer = currentLayers[i]; 646 layer->validateVisibility(planeTransform); 647 648 // start with the whole surface at its current location 649 const Layer::State& s(layer->drawingState()); 650 651 /* 652 * opaqueRegion: area of a surface that is fully opaque. 653 */ 654 Region opaqueRegion; 655 656 /* 657 * visibleRegion: area of a surface that is visible on screen 658 * and not fully transparent. This is essentially the layer's 659 * footprint minus the opaque regions above it. 660 * Areas covered by a translucent surface are considered visible. 661 */ 662 Region visibleRegion; 663 664 /* 665 * coveredRegion: area of a surface that is covered by all 666 * visible regions above it (which includes the translucent areas). 667 */ 668 Region coveredRegion; 669 670 671 // handle hidden surfaces by setting the visible region to empty 672 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 673 const bool translucent = !layer->isOpaque(); 674 const Rect bounds(layer->visibleBounds()); 675 visibleRegion.set(bounds); 676 visibleRegion.andSelf(screenRegion); 677 if (!visibleRegion.isEmpty()) { 678 // Remove the transparent area from the visible region 679 if (translucent) { 680 visibleRegion.subtractSelf(layer->transparentRegionScreen); 681 } 682 683 // compute the opaque region 684 const int32_t layerOrientation = layer->getOrientation(); 685 if (s.alpha==255 && !translucent && 686 ((layerOrientation & Transform::ROT_INVALID) == false)) { 687 // the opaque region is the layer's footprint 688 opaqueRegion = visibleRegion; 689 } 690 } 691 } 692 693 // Clip the covered region to the visible region 694 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 695 696 // Update aboveCoveredLayers for next (lower) layer 697 aboveCoveredLayers.orSelf(visibleRegion); 698 699 // subtract the opaque region covered by the layers above us 700 visibleRegion.subtractSelf(aboveOpaqueLayers); 701 702 // compute this layer's dirty region 703 if (layer->contentDirty) { 704 // we need to invalidate the whole region 705 dirty = visibleRegion; 706 // as well, as the old visible region 707 dirty.orSelf(layer->visibleRegionScreen); 708 layer->contentDirty = false; 709 } else { 710 /* compute the exposed region: 711 * the exposed region consists of two components: 712 * 1) what's VISIBLE now and was COVERED before 713 * 2) what's EXPOSED now less what was EXPOSED before 714 * 715 * note that (1) is conservative, we start with the whole 716 * visible region but only keep what used to be covered by 717 * something -- which mean it may have been exposed. 718 * 719 * (2) handles areas that were not covered by anything but got 720 * exposed because of a resize. 721 */ 722 const Region newExposed = visibleRegion - coveredRegion; 723 const Region oldVisibleRegion = layer->visibleRegionScreen; 724 const Region oldCoveredRegion = layer->coveredRegionScreen; 725 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 726 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 727 } 728 dirty.subtractSelf(aboveOpaqueLayers); 729 730 // accumulate to the screen dirty region 731 dirtyRegion.orSelf(dirty); 732 733 // Update aboveOpaqueLayers for next (lower) layer 734 aboveOpaqueLayers.orSelf(opaqueRegion); 735 736 // Store the visible region is screen space 737 layer->setVisibleRegion(visibleRegion); 738 layer->setCoveredRegion(coveredRegion); 739 740 // If a secure layer is partially visible, lock-down the screen! 741 if (layer->isSecure() && !visibleRegion.isEmpty()) { 742 secureFrameBuffer = true; 743 } 744 } 745 746 // invalidate the areas where a layer was removed 747 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 748 mDirtyRegionRemovedLayer.clear(); 749 750 mSecureFrameBuffer = secureFrameBuffer; 751 opaqueRegion = aboveOpaqueLayers; 752} 753 754 755void SurfaceFlinger::commitTransaction() 756{ 757 mDrawingState = mCurrentState; 758 mResizeTransationPending = false; 759 mTransactionCV.broadcast(); 760} 761 762void SurfaceFlinger::handlePageFlip() 763{ 764 bool visibleRegions = mVisibleRegionsDirty; 765 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 766 visibleRegions |= lockPageFlip(currentLayers); 767 768 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 769 const Region screenRegion(hw.bounds()); 770 if (visibleRegions) { 771 Region opaqueRegion; 772 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 773 774 /* 775 * rebuild the visible layer list 776 */ 777 const size_t count = currentLayers.size(); 778 mVisibleLayersSortedByZ.clear(); 779 mVisibleLayersSortedByZ.setCapacity(count); 780 for (size_t i=0 ; i<count ; i++) { 781 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 782 mVisibleLayersSortedByZ.add(currentLayers[i]); 783 } 784 785 mWormholeRegion = screenRegion.subtract(opaqueRegion); 786 mVisibleRegionsDirty = false; 787 invalidateHwcGeometry(); 788 } 789 790 unlockPageFlip(currentLayers); 791 792 mDirtyRegion.orSelf(getAndClearInvalidateRegion()); 793 mDirtyRegion.andSelf(screenRegion); 794} 795 796void SurfaceFlinger::invalidateHwcGeometry() 797{ 798 mHwWorkListDirty = true; 799} 800 801bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 802{ 803 bool recomputeVisibleRegions = false; 804 size_t count = currentLayers.size(); 805 sp<LayerBase> const* layers = currentLayers.array(); 806 for (size_t i=0 ; i<count ; i++) { 807 const sp<LayerBase>& layer(layers[i]); 808 layer->lockPageFlip(recomputeVisibleRegions); 809 } 810 return recomputeVisibleRegions; 811} 812 813void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 814{ 815 const GraphicPlane& plane(graphicPlane(0)); 816 const Transform& planeTransform(plane.transform()); 817 size_t count = currentLayers.size(); 818 sp<LayerBase> const* layers = currentLayers.array(); 819 for (size_t i=0 ; i<count ; i++) { 820 const sp<LayerBase>& layer(layers[i]); 821 layer->unlockPageFlip(planeTransform, mDirtyRegion); 822 } 823} 824 825void SurfaceFlinger::handleWorkList() 826{ 827 mHwWorkListDirty = false; 828 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 829 if (hwc.initCheck() == NO_ERROR) { 830 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 831 const size_t count = currentLayers.size(); 832 hwc.createWorkList(count); 833 hwc_layer_t* const cur(hwc.getLayers()); 834 for (size_t i=0 ; cur && i<count ; i++) { 835 currentLayers[i]->setGeometry(&cur[i]); 836 if (mDebugDisableHWC || mDebugRegion) { 837 cur[i].compositionType = HWC_FRAMEBUFFER; 838 cur[i].flags |= HWC_SKIP_LAYER; 839 } 840 } 841 } 842} 843 844void SurfaceFlinger::handleRepaint() 845{ 846 // compute the invalid region 847 mSwapRegion.orSelf(mDirtyRegion); 848 849 if (UNLIKELY(mDebugRegion)) { 850 debugFlashRegions(); 851 } 852 853 // set the frame buffer 854 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 855 glMatrixMode(GL_MODELVIEW); 856 glLoadIdentity(); 857 858 uint32_t flags = hw.getFlags(); 859 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 860 (flags & DisplayHardware::BUFFER_PRESERVED)) 861 { 862 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 863 // takes a rectangle, we must make sure to update that whole 864 // rectangle in that case 865 if (flags & DisplayHardware::SWAP_RECTANGLE) { 866 // TODO: we really should be able to pass a region to 867 // SWAP_RECTANGLE so that we don't have to redraw all this. 868 mDirtyRegion.set(mSwapRegion.bounds()); 869 } else { 870 // in the BUFFER_PRESERVED case, obviously, we can update only 871 // what's needed and nothing more. 872 // NOTE: this is NOT a common case, as preserving the backbuffer 873 // is costly and usually involves copying the whole update back. 874 } 875 } else { 876 if (flags & DisplayHardware::PARTIAL_UPDATES) { 877 // We need to redraw the rectangle that will be updated 878 // (pushed to the framebuffer). 879 // This is needed because PARTIAL_UPDATES only takes one 880 // rectangle instead of a region (see DisplayHardware::flip()) 881 mDirtyRegion.set(mSwapRegion.bounds()); 882 } else { 883 // we need to redraw everything (the whole screen) 884 mDirtyRegion.set(hw.bounds()); 885 mSwapRegion = mDirtyRegion; 886 } 887 } 888 889 setupHardwareComposer(mDirtyRegion); 890 composeSurfaces(mDirtyRegion); 891 892 // update the swap region and clear the dirty region 893 mSwapRegion.orSelf(mDirtyRegion); 894 mDirtyRegion.clear(); 895} 896 897void SurfaceFlinger::setupHardwareComposer(Region& dirtyInOut) 898{ 899 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 900 HWComposer& hwc(hw.getHwComposer()); 901 hwc_layer_t* const cur(hwc.getLayers()); 902 if (!cur) { 903 return; 904 } 905 906 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 907 size_t count = layers.size(); 908 909 LOGE_IF(hwc.getNumLayers() != count, 910 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 911 hwc.getNumLayers(), count); 912 913 // just to be extra-safe, use the smallest count 914 if (hwc.initCheck() == NO_ERROR) { 915 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 916 } 917 918 /* 919 * update the per-frame h/w composer data for each layer 920 * and build the transparent region of the FB 921 */ 922 for (size_t i=0 ; i<count ; i++) { 923 const sp<LayerBase>& layer(layers[i]); 924 layer->setPerFrameData(&cur[i]); 925 } 926 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 927 status_t err = hwc.prepare(); 928 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 929 930 if (err == NO_ERROR) { 931 // what's happening here is tricky. 932 // we want to clear all the layers with the CLEAR_FB flags 933 // that are opaque. 934 // however, since some GPU are efficient at preserving 935 // the backbuffer, we want to take advantage of that so we do the 936 // clear only in the dirty region (other areas will be preserved 937 // on those GPUs). 938 // NOTE: on non backbuffer preserving GPU, the dirty region 939 // has already been expanded as needed, so the code is correct 940 // there too. 941 // 942 // However, the content of the framebuffer cannot be trusted when 943 // we switch to/from FB/OVERLAY, in which case we need to 944 // expand the dirty region to those areas too. 945 // 946 // Note also that there is a special case when switching from 947 // "no layers in FB" to "some layers in FB", where we need to redraw 948 // the entire FB, since some areas might contain uninitialized 949 // data. 950 // 951 // Also we want to make sure to not clear areas that belong to 952 // layers above that won't redraw (we would just be erasing them), 953 // that is, we can't erase anything outside the dirty region. 954 955 Region transparent; 956 957 if (!fbLayerCount && hwc.getLayerCount(HWC_FRAMEBUFFER)) { 958 transparent.set(hw.getBounds()); 959 dirtyInOut = transparent; 960 } else { 961 for (size_t i=0 ; i<count ; i++) { 962 const sp<LayerBase>& layer(layers[i]); 963 if ((cur[i].hints & HWC_HINT_CLEAR_FB) && layer->isOpaque()) { 964 transparent.orSelf(layer->visibleRegionScreen); 965 } 966 bool isOverlay = (cur[i].compositionType != HWC_FRAMEBUFFER); 967 if (isOverlay != layer->isOverlay()) { 968 // we transitioned to/from overlay, so add this layer 969 // to the dirty region so the framebuffer can be either 970 // cleared or redrawn. 971 dirtyInOut.orSelf(layer->visibleRegionScreen); 972 } 973 layer->setOverlay(isOverlay); 974 } 975 // don't erase stuff outside the dirty region 976 transparent.andSelf(dirtyInOut); 977 } 978 979 /* 980 * clear the area of the FB that need to be transparent 981 */ 982 if (!transparent.isEmpty()) { 983 glClearColor(0,0,0,0); 984 Region::const_iterator it = transparent.begin(); 985 Region::const_iterator const end = transparent.end(); 986 const int32_t height = hw.getHeight(); 987 while (it != end) { 988 const Rect& r(*it++); 989 const GLint sy = height - (r.top + r.height()); 990 glScissor(r.left, sy, r.width(), r.height()); 991 glClear(GL_COLOR_BUFFER_BIT); 992 } 993 } 994 } 995} 996 997void SurfaceFlinger::composeSurfaces(const Region& dirty) 998{ 999 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1000 HWComposer& hwc(hw.getHwComposer()); 1001 1002 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 1003 if (UNLIKELY(fbLayerCount && !mWormholeRegion.isEmpty())) { 1004 // should never happen unless the window manager has a bug 1005 // draw something... 1006 drawWormhole(); 1007 } 1008 1009 /* 1010 * and then, render the layers targeted at the framebuffer 1011 */ 1012 hwc_layer_t* const cur(hwc.getLayers()); 1013 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1014 size_t count = layers.size(); 1015 for (size_t i=0 ; i<count ; i++) { 1016 if (cur && (cur[i].compositionType != HWC_FRAMEBUFFER)) { 1017 continue; 1018 } 1019 const sp<LayerBase>& layer(layers[i]); 1020 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 1021 if (!clip.isEmpty()) { 1022 layer->draw(clip); 1023 } 1024 } 1025} 1026 1027void SurfaceFlinger::debugFlashRegions() 1028{ 1029 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1030 const uint32_t flags = hw.getFlags(); 1031 const int32_t height = hw.getHeight(); 1032 if (mSwapRegion.isEmpty()) { 1033 return; 1034 } 1035 1036 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 1037 (flags & DisplayHardware::BUFFER_PRESERVED))) { 1038 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 1039 mDirtyRegion.bounds() : hw.bounds()); 1040 composeSurfaces(repaint); 1041 } 1042 1043 glDisable(GL_TEXTURE_EXTERNAL_OES); 1044 glDisable(GL_TEXTURE_2D); 1045 glDisable(GL_BLEND); 1046 glDisable(GL_SCISSOR_TEST); 1047 1048 static int toggle = 0; 1049 toggle = 1 - toggle; 1050 if (toggle) { 1051 glColor4f(1, 0, 1, 1); 1052 } else { 1053 glColor4f(1, 1, 0, 1); 1054 } 1055 1056 Region::const_iterator it = mDirtyRegion.begin(); 1057 Region::const_iterator const end = mDirtyRegion.end(); 1058 while (it != end) { 1059 const Rect& r = *it++; 1060 GLfloat vertices[][2] = { 1061 { r.left, height - r.top }, 1062 { r.left, height - r.bottom }, 1063 { r.right, height - r.bottom }, 1064 { r.right, height - r.top } 1065 }; 1066 glVertexPointer(2, GL_FLOAT, 0, vertices); 1067 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1068 } 1069 1070 hw.flip(mSwapRegion); 1071 1072 if (mDebugRegion > 1) 1073 usleep(mDebugRegion * 1000); 1074 1075 glEnable(GL_SCISSOR_TEST); 1076} 1077 1078void SurfaceFlinger::drawWormhole() const 1079{ 1080 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1081 if (region.isEmpty()) 1082 return; 1083 1084 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1085 const int32_t width = hw.getWidth(); 1086 const int32_t height = hw.getHeight(); 1087 1088 if (LIKELY(!mDebugBackground)) { 1089 glClearColor(0,0,0,0); 1090 Region::const_iterator it = region.begin(); 1091 Region::const_iterator const end = region.end(); 1092 while (it != end) { 1093 const Rect& r = *it++; 1094 const GLint sy = height - (r.top + r.height()); 1095 glScissor(r.left, sy, r.width(), r.height()); 1096 glClear(GL_COLOR_BUFFER_BIT); 1097 } 1098 } else { 1099 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1100 { width, height }, { 0, height } }; 1101 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1102 1103 glVertexPointer(2, GL_SHORT, 0, vertices); 1104 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1105 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1106 1107 glDisable(GL_TEXTURE_EXTERNAL_OES); 1108 glEnable(GL_TEXTURE_2D); 1109 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1110 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1111 glMatrixMode(GL_TEXTURE); 1112 glLoadIdentity(); 1113 1114 glDisable(GL_BLEND); 1115 1116 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1117 Region::const_iterator it = region.begin(); 1118 Region::const_iterator const end = region.end(); 1119 while (it != end) { 1120 const Rect& r = *it++; 1121 const GLint sy = height - (r.top + r.height()); 1122 glScissor(r.left, sy, r.width(), r.height()); 1123 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1124 } 1125 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1126 glDisable(GL_TEXTURE_2D); 1127 glLoadIdentity(); 1128 glMatrixMode(GL_MODELVIEW); 1129 } 1130} 1131 1132void SurfaceFlinger::debugShowFPS() const 1133{ 1134 static int mFrameCount; 1135 static int mLastFrameCount = 0; 1136 static nsecs_t mLastFpsTime = 0; 1137 static float mFps = 0; 1138 mFrameCount++; 1139 nsecs_t now = systemTime(); 1140 nsecs_t diff = now - mLastFpsTime; 1141 if (diff > ms2ns(250)) { 1142 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1143 mLastFpsTime = now; 1144 mLastFrameCount = mFrameCount; 1145 } 1146 // XXX: mFPS has the value we want 1147 } 1148 1149status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1150{ 1151 Mutex::Autolock _l(mStateLock); 1152 addLayer_l(layer); 1153 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1154 return NO_ERROR; 1155} 1156 1157status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1158{ 1159 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1160 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1161} 1162 1163ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1164 const sp<LayerBaseClient>& lbc) 1165{ 1166 // attach this layer to the client 1167 size_t name = client->attachLayer(lbc); 1168 1169 Mutex::Autolock _l(mStateLock); 1170 1171 // add this layer to the current state list 1172 addLayer_l(lbc); 1173 1174 return ssize_t(name); 1175} 1176 1177status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1178{ 1179 Mutex::Autolock _l(mStateLock); 1180 status_t err = purgatorizeLayer_l(layer); 1181 if (err == NO_ERROR) 1182 setTransactionFlags(eTransactionNeeded); 1183 return err; 1184} 1185 1186status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1187{ 1188 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1189 if (lbc != 0) { 1190 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1191 } 1192 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1193 if (index >= 0) { 1194 mLayersRemoved = true; 1195 return NO_ERROR; 1196 } 1197 return status_t(index); 1198} 1199 1200status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1201{ 1202 // First add the layer to the purgatory list, which makes sure it won't 1203 // go away, then remove it from the main list (through a transaction). 1204 ssize_t err = removeLayer_l(layerBase); 1205 if (err >= 0) { 1206 mLayerPurgatory.add(layerBase); 1207 } 1208 1209 layerBase->onRemoved(); 1210 1211 // it's possible that we don't find a layer, because it might 1212 // have been destroyed already -- this is not technically an error 1213 // from the user because there is a race between Client::destroySurface(), 1214 // ~Client() and ~ISurface(). 1215 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1216} 1217 1218status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1219{ 1220 layer->forceVisibilityTransaction(); 1221 setTransactionFlags(eTraversalNeeded); 1222 return NO_ERROR; 1223} 1224 1225uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1226{ 1227 return android_atomic_release_load(&mTransactionFlags); 1228} 1229 1230uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1231{ 1232 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1233} 1234 1235uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1236{ 1237 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1238 if ((old & flags)==0) { // wake the server up 1239 signalEvent(); 1240 } 1241 return old; 1242} 1243 1244 1245void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state, 1246 int orientation) { 1247 Mutex::Autolock _l(mStateLock); 1248 1249 uint32_t flags = 0; 1250 if (mCurrentState.orientation != orientation) { 1251 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1252 mCurrentState.orientation = orientation; 1253 flags |= eTransactionNeeded; 1254 mResizeTransationPending = true; 1255 } else if (orientation != eOrientationUnchanged) { 1256 LOGW("setTransactionState: ignoring unrecognized orientation: %d", 1257 orientation); 1258 } 1259 } 1260 1261 const size_t count = state.size(); 1262 for (size_t i=0 ; i<count ; i++) { 1263 const ComposerState& s(state[i]); 1264 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1265 flags |= setClientStateLocked(client, s.state); 1266 } 1267 if (flags) { 1268 setTransactionFlags(flags); 1269 } 1270 1271 signalEvent(); 1272 1273 // if there is a transaction with a resize, wait for it to 1274 // take effect before returning. 1275 while (mResizeTransationPending) { 1276 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1277 if (CC_UNLIKELY(err != NO_ERROR)) { 1278 // just in case something goes wrong in SF, return to the 1279 // called after a few seconds. 1280 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1281 mResizeTransationPending = false; 1282 break; 1283 } 1284 } 1285} 1286 1287status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1288{ 1289 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1290 return BAD_VALUE; 1291 1292 Mutex::Autolock _l(mStateLock); 1293 mCurrentState.freezeDisplay = 1; 1294 setTransactionFlags(eTransactionNeeded); 1295 1296 // flags is intended to communicate some sort of animation behavior 1297 // (for instance fading) 1298 return NO_ERROR; 1299} 1300 1301status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1302{ 1303 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1304 return BAD_VALUE; 1305 1306 Mutex::Autolock _l(mStateLock); 1307 mCurrentState.freezeDisplay = 0; 1308 setTransactionFlags(eTransactionNeeded); 1309 1310 // flags is intended to communicate some sort of animation behavior 1311 // (for instance fading) 1312 return NO_ERROR; 1313} 1314 1315int SurfaceFlinger::setOrientation(DisplayID dpy, 1316 int orientation, uint32_t flags) 1317{ 1318 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1319 return BAD_VALUE; 1320 1321 Mutex::Autolock _l(mStateLock); 1322 if (mCurrentState.orientation != orientation) { 1323 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1324 mCurrentState.orientationFlags = flags; 1325 mCurrentState.orientation = orientation; 1326 setTransactionFlags(eTransactionNeeded); 1327 mTransactionCV.wait(mStateLock); 1328 } else { 1329 orientation = BAD_VALUE; 1330 } 1331 } 1332 return orientation; 1333} 1334 1335sp<ISurface> SurfaceFlinger::createSurface( 1336 ISurfaceComposerClient::surface_data_t* params, 1337 const String8& name, 1338 const sp<Client>& client, 1339 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1340 uint32_t flags) 1341{ 1342 sp<LayerBaseClient> layer; 1343 sp<ISurface> surfaceHandle; 1344 1345 if (int32_t(w|h) < 0) { 1346 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1347 int(w), int(h)); 1348 return surfaceHandle; 1349 } 1350 1351 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1352 sp<Layer> normalLayer; 1353 switch (flags & eFXSurfaceMask) { 1354 case eFXSurfaceNormal: 1355 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1356 layer = normalLayer; 1357 break; 1358 case eFXSurfaceBlur: 1359 // for now we treat Blur as Dim, until we can implement it 1360 // efficiently. 1361 case eFXSurfaceDim: 1362 layer = createDimSurface(client, d, w, h, flags); 1363 break; 1364 case eFXSurfaceScreenshot: 1365 layer = createScreenshotSurface(client, d, w, h, flags); 1366 break; 1367 } 1368 1369 if (layer != 0) { 1370 layer->initStates(w, h, flags); 1371 layer->setName(name); 1372 ssize_t token = addClientLayer(client, layer); 1373 1374 surfaceHandle = layer->getSurface(); 1375 if (surfaceHandle != 0) { 1376 params->token = token; 1377 params->identity = layer->getIdentity(); 1378 if (normalLayer != 0) { 1379 Mutex::Autolock _l(mStateLock); 1380 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1381 } 1382 } 1383 1384 setTransactionFlags(eTransactionNeeded); 1385 } 1386 1387 return surfaceHandle; 1388} 1389 1390sp<Layer> SurfaceFlinger::createNormalSurface( 1391 const sp<Client>& client, DisplayID display, 1392 uint32_t w, uint32_t h, uint32_t flags, 1393 PixelFormat& format) 1394{ 1395 // initialize the surfaces 1396 switch (format) { // TODO: take h/w into account 1397 case PIXEL_FORMAT_TRANSPARENT: 1398 case PIXEL_FORMAT_TRANSLUCENT: 1399 format = PIXEL_FORMAT_RGBA_8888; 1400 break; 1401 case PIXEL_FORMAT_OPAQUE: 1402#ifdef NO_RGBX_8888 1403 format = PIXEL_FORMAT_RGB_565; 1404#else 1405 format = PIXEL_FORMAT_RGBX_8888; 1406#endif 1407 break; 1408 } 1409 1410#ifdef NO_RGBX_8888 1411 if (format == PIXEL_FORMAT_RGBX_8888) 1412 format = PIXEL_FORMAT_RGBA_8888; 1413#endif 1414 1415 sp<Layer> layer = new Layer(this, display, client); 1416 status_t err = layer->setBuffers(w, h, format, flags); 1417 if (LIKELY(err != NO_ERROR)) { 1418 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1419 layer.clear(); 1420 } 1421 return layer; 1422} 1423 1424sp<LayerDim> SurfaceFlinger::createDimSurface( 1425 const sp<Client>& client, DisplayID display, 1426 uint32_t w, uint32_t h, uint32_t flags) 1427{ 1428 sp<LayerDim> layer = new LayerDim(this, display, client); 1429 return layer; 1430} 1431 1432sp<LayerScreenshot> SurfaceFlinger::createScreenshotSurface( 1433 const sp<Client>& client, DisplayID display, 1434 uint32_t w, uint32_t h, uint32_t flags) 1435{ 1436 sp<LayerScreenshot> layer = new LayerScreenshot(this, display, client); 1437 status_t err = layer->capture(); 1438 if (err != NO_ERROR) { 1439 layer.clear(); 1440 LOGW("createScreenshotSurface failed (%s)", strerror(-err)); 1441 } 1442 return layer; 1443} 1444 1445status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1446{ 1447 /* 1448 * called by the window manager, when a surface should be marked for 1449 * destruction. 1450 * 1451 * The surface is removed from the current and drawing lists, but placed 1452 * in the purgatory queue, so it's not destroyed right-away (we need 1453 * to wait for all client's references to go away first). 1454 */ 1455 1456 status_t err = NAME_NOT_FOUND; 1457 Mutex::Autolock _l(mStateLock); 1458 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1459 if (layer != 0) { 1460 err = purgatorizeLayer_l(layer); 1461 if (err == NO_ERROR) { 1462 setTransactionFlags(eTransactionNeeded); 1463 } 1464 } 1465 return err; 1466} 1467 1468status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1469{ 1470 // called by ~ISurface() when all references are gone 1471 status_t err = NO_ERROR; 1472 sp<LayerBaseClient> l(layer.promote()); 1473 if (l != NULL) { 1474 Mutex::Autolock _l(mStateLock); 1475 err = removeLayer_l(l); 1476 if (err == NAME_NOT_FOUND) { 1477 // The surface wasn't in the current list, which means it was 1478 // removed already, which means it is in the purgatory, 1479 // and need to be removed from there. 1480 ssize_t idx = mLayerPurgatory.remove(l); 1481 LOGE_IF(idx < 0, 1482 "layer=%p is not in the purgatory list", l.get()); 1483 } 1484 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1485 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1486 } 1487 return err; 1488} 1489 1490uint32_t SurfaceFlinger::setClientStateLocked( 1491 const sp<Client>& client, 1492 const layer_state_t& s) 1493{ 1494 uint32_t flags = 0; 1495 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1496 if (layer != 0) { 1497 const uint32_t what = s.what; 1498 if (what & ePositionChanged) { 1499 if (layer->setPosition(s.x, s.y)) 1500 flags |= eTraversalNeeded; 1501 } 1502 if (what & eLayerChanged) { 1503 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1504 if (layer->setLayer(s.z)) { 1505 mCurrentState.layersSortedByZ.removeAt(idx); 1506 mCurrentState.layersSortedByZ.add(layer); 1507 // we need traversal (state changed) 1508 // AND transaction (list changed) 1509 flags |= eTransactionNeeded|eTraversalNeeded; 1510 } 1511 } 1512 if (what & eSizeChanged) { 1513 if (layer->setSize(s.w, s.h)) { 1514 flags |= eTraversalNeeded; 1515 mResizeTransationPending = true; 1516 } 1517 } 1518 if (what & eAlphaChanged) { 1519 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1520 flags |= eTraversalNeeded; 1521 } 1522 if (what & eMatrixChanged) { 1523 if (layer->setMatrix(s.matrix)) 1524 flags |= eTraversalNeeded; 1525 } 1526 if (what & eTransparentRegionChanged) { 1527 if (layer->setTransparentRegionHint(s.transparentRegion)) 1528 flags |= eTraversalNeeded; 1529 } 1530 if (what & eVisibilityChanged) { 1531 if (layer->setFlags(s.flags, s.mask)) 1532 flags |= eTraversalNeeded; 1533 } 1534 } 1535 return flags; 1536} 1537 1538void SurfaceFlinger::screenReleased(int dpy) 1539{ 1540 // this may be called by a signal handler, we can't do too much in here 1541 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1542 signalEvent(); 1543} 1544 1545void SurfaceFlinger::screenAcquired(int dpy) 1546{ 1547 // this may be called by a signal handler, we can't do too much in here 1548 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1549 signalEvent(); 1550} 1551 1552status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1553{ 1554 const size_t SIZE = 4096; 1555 char buffer[SIZE]; 1556 String8 result; 1557 1558 if (!PermissionCache::checkCallingPermission(sDump)) { 1559 snprintf(buffer, SIZE, "Permission Denial: " 1560 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1561 IPCThreadState::self()->getCallingPid(), 1562 IPCThreadState::self()->getCallingUid()); 1563 result.append(buffer); 1564 } else { 1565 1566 // figure out if we're stuck somewhere 1567 const nsecs_t now = systemTime(); 1568 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1569 const nsecs_t inTransaction(mDebugInTransaction); 1570 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1571 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1572 1573 // Try to get the main lock, but don't insist if we can't 1574 // (this would indicate SF is stuck, but we want to be able to 1575 // print something in dumpsys). 1576 int retry = 3; 1577 while (mStateLock.tryLock()<0 && --retry>=0) { 1578 usleep(1000000); 1579 } 1580 const bool locked(retry >= 0); 1581 if (!locked) { 1582 snprintf(buffer, SIZE, 1583 "SurfaceFlinger appears to be unresponsive, " 1584 "dumping anyways (no locks held)\n"); 1585 result.append(buffer); 1586 } 1587 1588 /* 1589 * Dump the visible layer list 1590 */ 1591 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1592 const size_t count = currentLayers.size(); 1593 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1594 result.append(buffer); 1595 for (size_t i=0 ; i<count ; i++) { 1596 const sp<LayerBase>& layer(currentLayers[i]); 1597 layer->dump(result, buffer, SIZE); 1598 const Layer::State& s(layer->drawingState()); 1599 s.transparentRegion.dump(result, "transparentRegion"); 1600 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1601 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1602 } 1603 1604 /* 1605 * Dump the layers in the purgatory 1606 */ 1607 1608 const size_t purgatorySize = mLayerPurgatory.size(); 1609 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1610 result.append(buffer); 1611 for (size_t i=0 ; i<purgatorySize ; i++) { 1612 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1613 layer->shortDump(result, buffer, SIZE); 1614 } 1615 1616 /* 1617 * Dump SurfaceFlinger global state 1618 */ 1619 1620 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1621 result.append(buffer); 1622 1623 const GLExtensions& extensions(GLExtensions::getInstance()); 1624 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1625 extensions.getVendor(), 1626 extensions.getRenderer(), 1627 extensions.getVersion()); 1628 result.append(buffer); 1629 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1630 result.append(buffer); 1631 1632 mWormholeRegion.dump(result, "WormholeRegion"); 1633 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1634 snprintf(buffer, SIZE, 1635 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1636 mFreezeDisplay?"yes":"no", mFreezeCount, 1637 mCurrentState.orientation, hw.canDraw()); 1638 result.append(buffer); 1639 snprintf(buffer, SIZE, 1640 " last eglSwapBuffers() time: %f us\n" 1641 " last transaction time : %f us\n" 1642 " refresh-rate : %f fps\n" 1643 " x-dpi : %f\n" 1644 " y-dpi : %f\n", 1645 mLastSwapBufferTime/1000.0, 1646 mLastTransactionTime/1000.0, 1647 hw.getRefreshRate(), 1648 hw.getDpiX(), 1649 hw.getDpiY()); 1650 result.append(buffer); 1651 1652 if (inSwapBuffersDuration || !locked) { 1653 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1654 inSwapBuffersDuration/1000.0); 1655 result.append(buffer); 1656 } 1657 1658 if (inTransactionDuration || !locked) { 1659 snprintf(buffer, SIZE, " transaction time: %f us\n", 1660 inTransactionDuration/1000.0); 1661 result.append(buffer); 1662 } 1663 1664 /* 1665 * Dump HWComposer state 1666 */ 1667 HWComposer& hwc(hw.getHwComposer()); 1668 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1669 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1670 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1671 result.append(buffer); 1672 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1673 1674 /* 1675 * Dump gralloc state 1676 */ 1677 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1678 alloc.dump(result); 1679 hw.dump(result); 1680 1681 if (locked) { 1682 mStateLock.unlock(); 1683 } 1684 } 1685 write(fd, result.string(), result.size()); 1686 return NO_ERROR; 1687} 1688 1689status_t SurfaceFlinger::onTransact( 1690 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1691{ 1692 switch (code) { 1693 case CREATE_CONNECTION: 1694 case SET_TRANSACTION_STATE: 1695 case SET_ORIENTATION: 1696 case FREEZE_DISPLAY: 1697 case UNFREEZE_DISPLAY: 1698 case BOOT_FINISHED: 1699 case TURN_ELECTRON_BEAM_OFF: 1700 case TURN_ELECTRON_BEAM_ON: 1701 { 1702 // codes that require permission check 1703 IPCThreadState* ipc = IPCThreadState::self(); 1704 const int pid = ipc->getCallingPid(); 1705 const int uid = ipc->getCallingUid(); 1706 if ((uid != AID_GRAPHICS) && 1707 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1708 LOGE("Permission Denial: " 1709 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1710 return PERMISSION_DENIED; 1711 } 1712 break; 1713 } 1714 case CAPTURE_SCREEN: 1715 { 1716 // codes that require permission check 1717 IPCThreadState* ipc = IPCThreadState::self(); 1718 const int pid = ipc->getCallingPid(); 1719 const int uid = ipc->getCallingUid(); 1720 if ((uid != AID_GRAPHICS) && 1721 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1722 LOGE("Permission Denial: " 1723 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1724 return PERMISSION_DENIED; 1725 } 1726 break; 1727 } 1728 } 1729 1730 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1731 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1732 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1733 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1734 IPCThreadState* ipc = IPCThreadState::self(); 1735 const int pid = ipc->getCallingPid(); 1736 const int uid = ipc->getCallingUid(); 1737 LOGE("Permission Denial: " 1738 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1739 return PERMISSION_DENIED; 1740 } 1741 int n; 1742 switch (code) { 1743 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1744 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1745 return NO_ERROR; 1746 case 1002: // SHOW_UPDATES 1747 n = data.readInt32(); 1748 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1749 invalidateHwcGeometry(); 1750 repaintEverything(); 1751 return NO_ERROR; 1752 case 1003: // SHOW_BACKGROUND 1753 n = data.readInt32(); 1754 mDebugBackground = n ? 1 : 0; 1755 return NO_ERROR; 1756 case 1004:{ // repaint everything 1757 repaintEverything(); 1758 return NO_ERROR; 1759 } 1760 case 1005:{ // force transaction 1761 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1762 return NO_ERROR; 1763 } 1764 case 1006:{ // enable/disable GraphicLog 1765 int enabled = data.readInt32(); 1766 GraphicLog::getInstance().setEnabled(enabled); 1767 return NO_ERROR; 1768 } 1769 case 1007: // set mFreezeCount 1770 mFreezeCount = data.readInt32(); 1771 mFreezeDisplayTime = 0; 1772 return NO_ERROR; 1773 case 1008: // toggle use of hw composer 1774 n = data.readInt32(); 1775 mDebugDisableHWC = n ? 1 : 0; 1776 invalidateHwcGeometry(); 1777 repaintEverything(); 1778 return NO_ERROR; 1779 case 1009: // toggle use of transform hint 1780 n = data.readInt32(); 1781 mDebugDisableTransformHint = n ? 1 : 0; 1782 invalidateHwcGeometry(); 1783 repaintEverything(); 1784 return NO_ERROR; 1785 case 1010: // interrogate. 1786 reply->writeInt32(0); 1787 reply->writeInt32(0); 1788 reply->writeInt32(mDebugRegion); 1789 reply->writeInt32(mDebugBackground); 1790 return NO_ERROR; 1791 case 1013: { 1792 Mutex::Autolock _l(mStateLock); 1793 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1794 reply->writeInt32(hw.getPageFlipCount()); 1795 } 1796 return NO_ERROR; 1797 } 1798 } 1799 return err; 1800} 1801 1802void SurfaceFlinger::repaintEverything() { 1803 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1804 const Rect bounds(hw.getBounds()); 1805 setInvalidateRegion(Region(bounds)); 1806 signalEvent(); 1807} 1808 1809void SurfaceFlinger::setInvalidateRegion(const Region& reg) { 1810 Mutex::Autolock _l(mInvalidateLock); 1811 mInvalidateRegion = reg; 1812} 1813 1814Region SurfaceFlinger::getAndClearInvalidateRegion() { 1815 Mutex::Autolock _l(mInvalidateLock); 1816 Region reg(mInvalidateRegion); 1817 mInvalidateRegion.clear(); 1818 return reg; 1819} 1820 1821// --------------------------------------------------------------------------- 1822 1823status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy, 1824 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1825{ 1826 Mutex::Autolock _l(mStateLock); 1827 return renderScreenToTextureLocked(dpy, textureName, uOut, vOut); 1828} 1829 1830status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1831 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1832{ 1833 if (!GLExtensions::getInstance().haveFramebufferObject()) 1834 return INVALID_OPERATION; 1835 1836 // get screen geometry 1837 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1838 const uint32_t hw_w = hw.getWidth(); 1839 const uint32_t hw_h = hw.getHeight(); 1840 GLfloat u = 1; 1841 GLfloat v = 1; 1842 1843 // make sure to clear all GL error flags 1844 while ( glGetError() != GL_NO_ERROR ) ; 1845 1846 // create a FBO 1847 GLuint name, tname; 1848 glGenTextures(1, &tname); 1849 glBindTexture(GL_TEXTURE_2D, tname); 1850 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1851 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1852 if (glGetError() != GL_NO_ERROR) { 1853 while ( glGetError() != GL_NO_ERROR ) ; 1854 GLint tw = (2 << (31 - clz(hw_w))); 1855 GLint th = (2 << (31 - clz(hw_h))); 1856 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1857 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1858 u = GLfloat(hw_w) / tw; 1859 v = GLfloat(hw_h) / th; 1860 } 1861 glGenFramebuffersOES(1, &name); 1862 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1863 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1864 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1865 1866 // redraw the screen entirely... 1867 glDisable(GL_TEXTURE_EXTERNAL_OES); 1868 glDisable(GL_TEXTURE_2D); 1869 glClearColor(0,0,0,1); 1870 glClear(GL_COLOR_BUFFER_BIT); 1871 glMatrixMode(GL_MODELVIEW); 1872 glLoadIdentity(); 1873 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1874 const size_t count = layers.size(); 1875 for (size_t i=0 ; i<count ; ++i) { 1876 const sp<LayerBase>& layer(layers[i]); 1877 layer->drawForSreenShot(); 1878 } 1879 1880 hw.compositionComplete(); 1881 1882 // back to main framebuffer 1883 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1884 glDisable(GL_SCISSOR_TEST); 1885 glDeleteFramebuffersOES(1, &name); 1886 1887 *textureName = tname; 1888 *uOut = u; 1889 *vOut = v; 1890 return NO_ERROR; 1891} 1892 1893// --------------------------------------------------------------------------- 1894 1895status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1896{ 1897 // get screen geometry 1898 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1899 const uint32_t hw_w = hw.getWidth(); 1900 const uint32_t hw_h = hw.getHeight(); 1901 const Region screenBounds(hw.getBounds()); 1902 1903 GLfloat u, v; 1904 GLuint tname; 1905 status_t result = renderScreenToTextureLocked(0, &tname, &u, &v); 1906 if (result != NO_ERROR) { 1907 return result; 1908 } 1909 1910 GLfloat vtx[8]; 1911 const GLfloat texCoords[4][2] = { {0,0}, {0,v}, {u,v}, {u,0} }; 1912 glBindTexture(GL_TEXTURE_2D, tname); 1913 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1914 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1915 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1916 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1917 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1918 glVertexPointer(2, GL_FLOAT, 0, vtx); 1919 1920 /* 1921 * Texture coordinate mapping 1922 * 1923 * u 1924 * 1 +----------+---+ 1925 * | | | | image is inverted 1926 * | V | | w.r.t. the texture 1927 * 1-v +----------+ | coordinates 1928 * | | 1929 * | | 1930 * | | 1931 * 0 +--------------+ 1932 * 0 1 1933 * 1934 */ 1935 1936 class s_curve_interpolator { 1937 const float nbFrames, s, v; 1938 public: 1939 s_curve_interpolator(int nbFrames, float s) 1940 : nbFrames(1.0f / (nbFrames-1)), s(s), 1941 v(1.0f + expf(-s + 0.5f*s)) { 1942 } 1943 float operator()(int f) { 1944 const float x = f * nbFrames; 1945 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1946 } 1947 }; 1948 1949 class v_stretch { 1950 const GLfloat hw_w, hw_h; 1951 public: 1952 v_stretch(uint32_t hw_w, uint32_t hw_h) 1953 : hw_w(hw_w), hw_h(hw_h) { 1954 } 1955 void operator()(GLfloat* vtx, float v) { 1956 const GLfloat w = hw_w + (hw_w * v); 1957 const GLfloat h = hw_h - (hw_h * v); 1958 const GLfloat x = (hw_w - w) * 0.5f; 1959 const GLfloat y = (hw_h - h) * 0.5f; 1960 vtx[0] = x; vtx[1] = y; 1961 vtx[2] = x; vtx[3] = y + h; 1962 vtx[4] = x + w; vtx[5] = y + h; 1963 vtx[6] = x + w; vtx[7] = y; 1964 } 1965 }; 1966 1967 class h_stretch { 1968 const GLfloat hw_w, hw_h; 1969 public: 1970 h_stretch(uint32_t hw_w, uint32_t hw_h) 1971 : hw_w(hw_w), hw_h(hw_h) { 1972 } 1973 void operator()(GLfloat* vtx, float v) { 1974 const GLfloat w = hw_w - (hw_w * v); 1975 const GLfloat h = 1.0f; 1976 const GLfloat x = (hw_w - w) * 0.5f; 1977 const GLfloat y = (hw_h - h) * 0.5f; 1978 vtx[0] = x; vtx[1] = y; 1979 vtx[2] = x; vtx[3] = y + h; 1980 vtx[4] = x + w; vtx[5] = y + h; 1981 vtx[6] = x + w; vtx[7] = y; 1982 } 1983 }; 1984 1985 // the full animation is 24 frames 1986 char value[PROPERTY_VALUE_MAX]; 1987 property_get("debug.sf.electron_frames", value, "24"); 1988 int nbFrames = (atoi(value) + 1) >> 1; 1989 if (nbFrames <= 0) // just in case 1990 nbFrames = 24; 1991 1992 s_curve_interpolator itr(nbFrames, 7.5f); 1993 s_curve_interpolator itg(nbFrames, 8.0f); 1994 s_curve_interpolator itb(nbFrames, 8.5f); 1995 1996 v_stretch vverts(hw_w, hw_h); 1997 1998 glMatrixMode(GL_TEXTURE); 1999 glLoadIdentity(); 2000 glMatrixMode(GL_MODELVIEW); 2001 glLoadIdentity(); 2002 2003 glEnable(GL_BLEND); 2004 glBlendFunc(GL_ONE, GL_ONE); 2005 for (int i=0 ; i<nbFrames ; i++) { 2006 float x, y, w, h; 2007 const float vr = itr(i); 2008 const float vg = itg(i); 2009 const float vb = itb(i); 2010 2011 // clear screen 2012 glColorMask(1,1,1,1); 2013 glClear(GL_COLOR_BUFFER_BIT); 2014 glEnable(GL_TEXTURE_2D); 2015 2016 // draw the red plane 2017 vverts(vtx, vr); 2018 glColorMask(1,0,0,1); 2019 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2020 2021 // draw the green plane 2022 vverts(vtx, vg); 2023 glColorMask(0,1,0,1); 2024 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2025 2026 // draw the blue plane 2027 vverts(vtx, vb); 2028 glColorMask(0,0,1,1); 2029 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2030 2031 // draw the white highlight (we use the last vertices) 2032 glDisable(GL_TEXTURE_2D); 2033 glColorMask(1,1,1,1); 2034 glColor4f(vg, vg, vg, 1); 2035 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2036 hw.flip(screenBounds); 2037 } 2038 2039 h_stretch hverts(hw_w, hw_h); 2040 glDisable(GL_BLEND); 2041 glDisable(GL_TEXTURE_2D); 2042 glColorMask(1,1,1,1); 2043 for (int i=0 ; i<nbFrames ; i++) { 2044 const float v = itg(i); 2045 hverts(vtx, v); 2046 glClear(GL_COLOR_BUFFER_BIT); 2047 glColor4f(1-v, 1-v, 1-v, 1); 2048 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2049 hw.flip(screenBounds); 2050 } 2051 2052 glColorMask(1,1,1,1); 2053 glEnable(GL_SCISSOR_TEST); 2054 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2055 glDeleteTextures(1, &tname); 2056 glDisable(GL_TEXTURE_2D); 2057 glDisable(GL_BLEND); 2058 return NO_ERROR; 2059} 2060 2061status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 2062{ 2063 status_t result = PERMISSION_DENIED; 2064 2065 if (!GLExtensions::getInstance().haveFramebufferObject()) 2066 return INVALID_OPERATION; 2067 2068 2069 // get screen geometry 2070 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2071 const uint32_t hw_w = hw.getWidth(); 2072 const uint32_t hw_h = hw.getHeight(); 2073 const Region screenBounds(hw.bounds()); 2074 2075 GLfloat u, v; 2076 GLuint tname; 2077 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2078 if (result != NO_ERROR) { 2079 return result; 2080 } 2081 2082 GLfloat vtx[8]; 2083 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2084 glBindTexture(GL_TEXTURE_2D, tname); 2085 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2086 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2087 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2088 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2089 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2090 glVertexPointer(2, GL_FLOAT, 0, vtx); 2091 2092 class s_curve_interpolator { 2093 const float nbFrames, s, v; 2094 public: 2095 s_curve_interpolator(int nbFrames, float s) 2096 : nbFrames(1.0f / (nbFrames-1)), s(s), 2097 v(1.0f + expf(-s + 0.5f*s)) { 2098 } 2099 float operator()(int f) { 2100 const float x = f * nbFrames; 2101 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2102 } 2103 }; 2104 2105 class v_stretch { 2106 const GLfloat hw_w, hw_h; 2107 public: 2108 v_stretch(uint32_t hw_w, uint32_t hw_h) 2109 : hw_w(hw_w), hw_h(hw_h) { 2110 } 2111 void operator()(GLfloat* vtx, float v) { 2112 const GLfloat w = hw_w + (hw_w * v); 2113 const GLfloat h = hw_h - (hw_h * v); 2114 const GLfloat x = (hw_w - w) * 0.5f; 2115 const GLfloat y = (hw_h - h) * 0.5f; 2116 vtx[0] = x; vtx[1] = y; 2117 vtx[2] = x; vtx[3] = y + h; 2118 vtx[4] = x + w; vtx[5] = y + h; 2119 vtx[6] = x + w; vtx[7] = y; 2120 } 2121 }; 2122 2123 class h_stretch { 2124 const GLfloat hw_w, hw_h; 2125 public: 2126 h_stretch(uint32_t hw_w, uint32_t hw_h) 2127 : hw_w(hw_w), hw_h(hw_h) { 2128 } 2129 void operator()(GLfloat* vtx, float v) { 2130 const GLfloat w = hw_w - (hw_w * v); 2131 const GLfloat h = 1.0f; 2132 const GLfloat x = (hw_w - w) * 0.5f; 2133 const GLfloat y = (hw_h - h) * 0.5f; 2134 vtx[0] = x; vtx[1] = y; 2135 vtx[2] = x; vtx[3] = y + h; 2136 vtx[4] = x + w; vtx[5] = y + h; 2137 vtx[6] = x + w; vtx[7] = y; 2138 } 2139 }; 2140 2141 // the full animation is 12 frames 2142 int nbFrames = 8; 2143 s_curve_interpolator itr(nbFrames, 7.5f); 2144 s_curve_interpolator itg(nbFrames, 8.0f); 2145 s_curve_interpolator itb(nbFrames, 8.5f); 2146 2147 h_stretch hverts(hw_w, hw_h); 2148 glDisable(GL_BLEND); 2149 glDisable(GL_TEXTURE_2D); 2150 glColorMask(1,1,1,1); 2151 for (int i=nbFrames-1 ; i>=0 ; i--) { 2152 const float v = itg(i); 2153 hverts(vtx, v); 2154 glClear(GL_COLOR_BUFFER_BIT); 2155 glColor4f(1-v, 1-v, 1-v, 1); 2156 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2157 hw.flip(screenBounds); 2158 } 2159 2160 nbFrames = 4; 2161 v_stretch vverts(hw_w, hw_h); 2162 glEnable(GL_BLEND); 2163 glBlendFunc(GL_ONE, GL_ONE); 2164 for (int i=nbFrames-1 ; i>=0 ; i--) { 2165 float x, y, w, h; 2166 const float vr = itr(i); 2167 const float vg = itg(i); 2168 const float vb = itb(i); 2169 2170 // clear screen 2171 glColorMask(1,1,1,1); 2172 glClear(GL_COLOR_BUFFER_BIT); 2173 glEnable(GL_TEXTURE_2D); 2174 2175 // draw the red plane 2176 vverts(vtx, vr); 2177 glColorMask(1,0,0,1); 2178 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2179 2180 // draw the green plane 2181 vverts(vtx, vg); 2182 glColorMask(0,1,0,1); 2183 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2184 2185 // draw the blue plane 2186 vverts(vtx, vb); 2187 glColorMask(0,0,1,1); 2188 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2189 2190 hw.flip(screenBounds); 2191 } 2192 2193 glColorMask(1,1,1,1); 2194 glEnable(GL_SCISSOR_TEST); 2195 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2196 glDeleteTextures(1, &tname); 2197 glDisable(GL_TEXTURE_2D); 2198 glDisable(GL_BLEND); 2199 2200 return NO_ERROR; 2201} 2202 2203// --------------------------------------------------------------------------- 2204 2205status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2206{ 2207 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2208 if (!hw.canDraw()) { 2209 // we're already off 2210 return NO_ERROR; 2211 } 2212 2213 // turn off hwc while we're doing the animation 2214 hw.getHwComposer().disable(); 2215 // and make sure to turn it back on (if needed) next time we compose 2216 invalidateHwcGeometry(); 2217 2218 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2219 electronBeamOffAnimationImplLocked(); 2220 } 2221 2222 // always clear the whole screen at the end of the animation 2223 glClearColor(0,0,0,1); 2224 glDisable(GL_SCISSOR_TEST); 2225 glClear(GL_COLOR_BUFFER_BIT); 2226 glEnable(GL_SCISSOR_TEST); 2227 hw.flip( Region(hw.bounds()) ); 2228 2229 return NO_ERROR; 2230} 2231 2232status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2233{ 2234 class MessageTurnElectronBeamOff : public MessageBase { 2235 SurfaceFlinger* flinger; 2236 int32_t mode; 2237 status_t result; 2238 public: 2239 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2240 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2241 } 2242 status_t getResult() const { 2243 return result; 2244 } 2245 virtual bool handler() { 2246 Mutex::Autolock _l(flinger->mStateLock); 2247 result = flinger->turnElectronBeamOffImplLocked(mode); 2248 return true; 2249 } 2250 }; 2251 2252 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2253 status_t res = postMessageSync(msg); 2254 if (res == NO_ERROR) { 2255 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2256 2257 // work-around: when the power-manager calls us we activate the 2258 // animation. eventually, the "on" animation will be called 2259 // by the power-manager itself 2260 mElectronBeamAnimationMode = mode; 2261 } 2262 return res; 2263} 2264 2265// --------------------------------------------------------------------------- 2266 2267status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2268{ 2269 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2270 if (hw.canDraw()) { 2271 // we're already on 2272 return NO_ERROR; 2273 } 2274 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2275 electronBeamOnAnimationImplLocked(); 2276 } 2277 2278 // make sure to redraw the whole screen when the animation is done 2279 mDirtyRegion.set(hw.bounds()); 2280 signalEvent(); 2281 2282 return NO_ERROR; 2283} 2284 2285status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2286{ 2287 class MessageTurnElectronBeamOn : public MessageBase { 2288 SurfaceFlinger* flinger; 2289 int32_t mode; 2290 status_t result; 2291 public: 2292 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2293 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2294 } 2295 status_t getResult() const { 2296 return result; 2297 } 2298 virtual bool handler() { 2299 Mutex::Autolock _l(flinger->mStateLock); 2300 result = flinger->turnElectronBeamOnImplLocked(mode); 2301 return true; 2302 } 2303 }; 2304 2305 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2306 return NO_ERROR; 2307} 2308 2309// --------------------------------------------------------------------------- 2310 2311status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2312 sp<IMemoryHeap>* heap, 2313 uint32_t* w, uint32_t* h, PixelFormat* f, 2314 uint32_t sw, uint32_t sh, 2315 uint32_t minLayerZ, uint32_t maxLayerZ) 2316{ 2317 status_t result = PERMISSION_DENIED; 2318 2319 // only one display supported for now 2320 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2321 return BAD_VALUE; 2322 2323 if (!GLExtensions::getInstance().haveFramebufferObject()) 2324 return INVALID_OPERATION; 2325 2326 // get screen geometry 2327 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2328 const uint32_t hw_w = hw.getWidth(); 2329 const uint32_t hw_h = hw.getHeight(); 2330 2331 if ((sw > hw_w) || (sh > hw_h)) 2332 return BAD_VALUE; 2333 2334 sw = (!sw) ? hw_w : sw; 2335 sh = (!sh) ? hw_h : sh; 2336 const size_t size = sw * sh * 4; 2337 2338 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2339 // sw, sh, minLayerZ, maxLayerZ); 2340 2341 // make sure to clear all GL error flags 2342 while ( glGetError() != GL_NO_ERROR ) ; 2343 2344 // create a FBO 2345 GLuint name, tname; 2346 glGenRenderbuffersOES(1, &tname); 2347 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2348 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2349 glGenFramebuffersOES(1, &name); 2350 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2351 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2352 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2353 2354 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2355 2356 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2357 2358 // invert everything, b/c glReadPixel() below will invert the FB 2359 glViewport(0, 0, sw, sh); 2360 glScissor(0, 0, sw, sh); 2361 glEnable(GL_SCISSOR_TEST); 2362 glMatrixMode(GL_PROJECTION); 2363 glPushMatrix(); 2364 glLoadIdentity(); 2365 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2366 glMatrixMode(GL_MODELVIEW); 2367 2368 // redraw the screen entirely... 2369 glClearColor(0,0,0,1); 2370 glClear(GL_COLOR_BUFFER_BIT); 2371 2372 const LayerVector& layers(mDrawingState.layersSortedByZ); 2373 const size_t count = layers.size(); 2374 for (size_t i=0 ; i<count ; ++i) { 2375 const sp<LayerBase>& layer(layers[i]); 2376 const uint32_t flags = layer->drawingState().flags; 2377 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2378 const uint32_t z = layer->drawingState().z; 2379 if (z >= minLayerZ && z <= maxLayerZ) { 2380 layer->drawForSreenShot(); 2381 } 2382 } 2383 } 2384 2385 // XXX: this is needed on tegra 2386 glEnable(GL_SCISSOR_TEST); 2387 glScissor(0, 0, sw, sh); 2388 2389 // check for errors and return screen capture 2390 if (glGetError() != GL_NO_ERROR) { 2391 // error while rendering 2392 result = INVALID_OPERATION; 2393 } else { 2394 // allocate shared memory large enough to hold the 2395 // screen capture 2396 sp<MemoryHeapBase> base( 2397 new MemoryHeapBase(size, 0, "screen-capture") ); 2398 void* const ptr = base->getBase(); 2399 if (ptr) { 2400 // capture the screen with glReadPixels() 2401 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2402 if (glGetError() == GL_NO_ERROR) { 2403 *heap = base; 2404 *w = sw; 2405 *h = sh; 2406 *f = PIXEL_FORMAT_RGBA_8888; 2407 result = NO_ERROR; 2408 } 2409 } else { 2410 result = NO_MEMORY; 2411 } 2412 } 2413 glEnable(GL_SCISSOR_TEST); 2414 glViewport(0, 0, hw_w, hw_h); 2415 glMatrixMode(GL_PROJECTION); 2416 glPopMatrix(); 2417 glMatrixMode(GL_MODELVIEW); 2418 } else { 2419 result = BAD_VALUE; 2420 } 2421 2422 // release FBO resources 2423 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2424 glDeleteRenderbuffersOES(1, &tname); 2425 glDeleteFramebuffersOES(1, &name); 2426 2427 hw.compositionComplete(); 2428 2429 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2430 2431 return result; 2432} 2433 2434 2435status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2436 sp<IMemoryHeap>* heap, 2437 uint32_t* width, uint32_t* height, PixelFormat* format, 2438 uint32_t sw, uint32_t sh, 2439 uint32_t minLayerZ, uint32_t maxLayerZ) 2440{ 2441 // only one display supported for now 2442 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2443 return BAD_VALUE; 2444 2445 if (!GLExtensions::getInstance().haveFramebufferObject()) 2446 return INVALID_OPERATION; 2447 2448 class MessageCaptureScreen : public MessageBase { 2449 SurfaceFlinger* flinger; 2450 DisplayID dpy; 2451 sp<IMemoryHeap>* heap; 2452 uint32_t* w; 2453 uint32_t* h; 2454 PixelFormat* f; 2455 uint32_t sw; 2456 uint32_t sh; 2457 uint32_t minLayerZ; 2458 uint32_t maxLayerZ; 2459 status_t result; 2460 public: 2461 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2462 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2463 uint32_t sw, uint32_t sh, 2464 uint32_t minLayerZ, uint32_t maxLayerZ) 2465 : flinger(flinger), dpy(dpy), 2466 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2467 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2468 result(PERMISSION_DENIED) 2469 { 2470 } 2471 status_t getResult() const { 2472 return result; 2473 } 2474 virtual bool handler() { 2475 Mutex::Autolock _l(flinger->mStateLock); 2476 2477 // if we have secure windows, never allow the screen capture 2478 if (flinger->mSecureFrameBuffer) 2479 return true; 2480 2481 result = flinger->captureScreenImplLocked(dpy, 2482 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2483 2484 return true; 2485 } 2486 }; 2487 2488 sp<MessageBase> msg = new MessageCaptureScreen(this, 2489 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2490 status_t res = postMessageSync(msg); 2491 if (res == NO_ERROR) { 2492 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2493 } 2494 return res; 2495} 2496 2497// --------------------------------------------------------------------------- 2498 2499sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2500{ 2501 sp<Layer> result; 2502 Mutex::Autolock _l(mStateLock); 2503 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2504 return result; 2505} 2506 2507// --------------------------------------------------------------------------- 2508 2509Client::Client(const sp<SurfaceFlinger>& flinger) 2510 : mFlinger(flinger), mNameGenerator(1) 2511{ 2512} 2513 2514Client::~Client() 2515{ 2516 const size_t count = mLayers.size(); 2517 for (size_t i=0 ; i<count ; i++) { 2518 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2519 if (layer != 0) { 2520 mFlinger->removeLayer(layer); 2521 } 2522 } 2523} 2524 2525status_t Client::initCheck() const { 2526 return NO_ERROR; 2527} 2528 2529size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2530{ 2531 Mutex::Autolock _l(mLock); 2532 size_t name = mNameGenerator++; 2533 mLayers.add(name, layer); 2534 return name; 2535} 2536 2537void Client::detachLayer(const LayerBaseClient* layer) 2538{ 2539 Mutex::Autolock _l(mLock); 2540 // we do a linear search here, because this doesn't happen often 2541 const size_t count = mLayers.size(); 2542 for (size_t i=0 ; i<count ; i++) { 2543 if (mLayers.valueAt(i) == layer) { 2544 mLayers.removeItemsAt(i, 1); 2545 break; 2546 } 2547 } 2548} 2549sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2550{ 2551 Mutex::Autolock _l(mLock); 2552 sp<LayerBaseClient> lbc; 2553 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2554 if (layer != 0) { 2555 lbc = layer.promote(); 2556 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2557 } 2558 return lbc; 2559} 2560 2561 2562status_t Client::onTransact( 2563 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2564{ 2565 // these must be checked 2566 IPCThreadState* ipc = IPCThreadState::self(); 2567 const int pid = ipc->getCallingPid(); 2568 const int uid = ipc->getCallingUid(); 2569 const int self_pid = getpid(); 2570 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2571 // we're called from a different process, do the real check 2572 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2573 { 2574 LOGE("Permission Denial: " 2575 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2576 return PERMISSION_DENIED; 2577 } 2578 } 2579 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2580} 2581 2582 2583sp<ISurface> Client::createSurface( 2584 ISurfaceComposerClient::surface_data_t* params, 2585 const String8& name, 2586 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2587 uint32_t flags) 2588{ 2589 /* 2590 * createSurface must be called from the GL thread so that it can 2591 * have access to the GL context. 2592 */ 2593 2594 class MessageCreateSurface : public MessageBase { 2595 sp<ISurface> result; 2596 SurfaceFlinger* flinger; 2597 ISurfaceComposerClient::surface_data_t* params; 2598 Client* client; 2599 const String8& name; 2600 DisplayID display; 2601 uint32_t w, h; 2602 PixelFormat format; 2603 uint32_t flags; 2604 public: 2605 MessageCreateSurface(SurfaceFlinger* flinger, 2606 ISurfaceComposerClient::surface_data_t* params, 2607 const String8& name, Client* client, 2608 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2609 uint32_t flags) 2610 : flinger(flinger), params(params), client(client), name(name), 2611 display(display), w(w), h(h), format(format), flags(flags) 2612 { 2613 } 2614 sp<ISurface> getResult() const { return result; } 2615 virtual bool handler() { 2616 result = flinger->createSurface(params, name, client, 2617 display, w, h, format, flags); 2618 return true; 2619 } 2620 }; 2621 2622 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2623 params, name, this, display, w, h, format, flags); 2624 mFlinger->postMessageSync(msg); 2625 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2626} 2627status_t Client::destroySurface(SurfaceID sid) { 2628 return mFlinger->removeSurface(this, sid); 2629} 2630 2631// --------------------------------------------------------------------------- 2632 2633GraphicBufferAlloc::GraphicBufferAlloc() {} 2634 2635GraphicBufferAlloc::~GraphicBufferAlloc() {} 2636 2637sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2638 PixelFormat format, uint32_t usage, status_t* error) { 2639 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2640 status_t err = graphicBuffer->initCheck(); 2641 *error = err; 2642 if (err != 0 || graphicBuffer->handle == 0) { 2643 if (err == NO_MEMORY) { 2644 GraphicBuffer::dumpAllocationsToSystemLog(); 2645 } 2646 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2647 "failed (%s), handle=%p", 2648 w, h, strerror(-err), graphicBuffer->handle); 2649 return 0; 2650 } 2651 return graphicBuffer; 2652} 2653 2654// --------------------------------------------------------------------------- 2655 2656GraphicPlane::GraphicPlane() 2657 : mHw(0) 2658{ 2659} 2660 2661GraphicPlane::~GraphicPlane() { 2662 delete mHw; 2663} 2664 2665bool GraphicPlane::initialized() const { 2666 return mHw ? true : false; 2667} 2668 2669int GraphicPlane::getWidth() const { 2670 return mWidth; 2671} 2672 2673int GraphicPlane::getHeight() const { 2674 return mHeight; 2675} 2676 2677void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2678{ 2679 mHw = hw; 2680 2681 // initialize the display orientation transform. 2682 // it's a constant that should come from the display driver. 2683 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2684 char property[PROPERTY_VALUE_MAX]; 2685 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2686 //displayOrientation 2687 switch (atoi(property)) { 2688 case 90: 2689 displayOrientation = ISurfaceComposer::eOrientation90; 2690 break; 2691 case 270: 2692 displayOrientation = ISurfaceComposer::eOrientation270; 2693 break; 2694 } 2695 } 2696 2697 const float w = hw->getWidth(); 2698 const float h = hw->getHeight(); 2699 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2700 &mDisplayTransform); 2701 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2702 mDisplayWidth = h; 2703 mDisplayHeight = w; 2704 } else { 2705 mDisplayWidth = w; 2706 mDisplayHeight = h; 2707 } 2708 2709 setOrientation(ISurfaceComposer::eOrientationDefault); 2710} 2711 2712status_t GraphicPlane::orientationToTransfrom( 2713 int orientation, int w, int h, Transform* tr) 2714{ 2715 uint32_t flags = 0; 2716 switch (orientation) { 2717 case ISurfaceComposer::eOrientationDefault: 2718 flags = Transform::ROT_0; 2719 break; 2720 case ISurfaceComposer::eOrientation90: 2721 flags = Transform::ROT_90; 2722 break; 2723 case ISurfaceComposer::eOrientation180: 2724 flags = Transform::ROT_180; 2725 break; 2726 case ISurfaceComposer::eOrientation270: 2727 flags = Transform::ROT_270; 2728 break; 2729 default: 2730 return BAD_VALUE; 2731 } 2732 tr->set(flags, w, h); 2733 return NO_ERROR; 2734} 2735 2736status_t GraphicPlane::setOrientation(int orientation) 2737{ 2738 // If the rotation can be handled in hardware, this is where 2739 // the magic should happen. 2740 2741 const DisplayHardware& hw(displayHardware()); 2742 const float w = mDisplayWidth; 2743 const float h = mDisplayHeight; 2744 mWidth = int(w); 2745 mHeight = int(h); 2746 2747 Transform orientationTransform; 2748 GraphicPlane::orientationToTransfrom(orientation, w, h, 2749 &orientationTransform); 2750 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2751 mWidth = int(h); 2752 mHeight = int(w); 2753 } 2754 2755 mOrientation = orientation; 2756 mGlobalTransform = mDisplayTransform * orientationTransform; 2757 return NO_ERROR; 2758} 2759 2760const DisplayHardware& GraphicPlane::displayHardware() const { 2761 return *mHw; 2762} 2763 2764DisplayHardware& GraphicPlane::editDisplayHardware() { 2765 return *mHw; 2766} 2767 2768const Transform& GraphicPlane::transform() const { 2769 return mGlobalTransform; 2770} 2771 2772EGLDisplay GraphicPlane::getEGLDisplay() const { 2773 return mHw->getEGLDisplay(); 2774} 2775 2776// --------------------------------------------------------------------------- 2777 2778}; // namespace android 2779