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 EGL_VERSION_HW_ANDROID 0x3143 69 70 #define DISPLAY_COUNT 1 71 72 namespace android { 73 // --------------------------------------------------------------------------- 74 75 const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 76 const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 77 const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 78 const String16 sDump("android.permission.DUMP"); 79 80 // --------------------------------------------------------------------------- 81 82 SurfaceFlinger::SurfaceFlinger() 83 : BnSurfaceComposer(), Thread(false), 84 mTransactionFlags(0), 85 mTransationPending(false), 86 mLayersRemoved(false), 87 mBootTime(systemTime()), 88 mVisibleRegionsDirty(false), 89 mHwWorkListDirty(false), 90 mElectronBeamAnimationMode(0), 91 mDebugRegion(0), 92 mDebugBackground(0), 93 mDebugDDMS(0), 94 mDebugDisableHWC(0), 95 mDebugDisableTransformHint(0), 96 mDebugInSwapBuffers(0), 97 mLastSwapBufferTime(0), 98 mDebugInTransaction(0), 99 mLastTransactionTime(0), 100 mBootFinished(false), 101 mConsoleSignals(0), 102 mSecureFrameBuffer(0) 103 { 104 init(); 105 } 106 107 void SurfaceFlinger::init() 108 { 109 LOGI("SurfaceFlinger is starting"); 110 111 // debugging stuff... 112 char value[PROPERTY_VALUE_MAX]; 113 114 property_get("debug.sf.showupdates", value, "0"); 115 mDebugRegion = atoi(value); 116 117 property_get("debug.sf.showbackground", value, "0"); 118 mDebugBackground = atoi(value); 119 120 property_get("debug.sf.ddms", value, "0"); 121 mDebugDDMS = atoi(value); 122 if (mDebugDDMS) { 123 DdmConnection::start(getServiceName()); 124 } 125 126 LOGI_IF(mDebugRegion, "showupdates enabled"); 127 LOGI_IF(mDebugBackground, "showbackground enabled"); 128 LOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 129 } 130 131 SurfaceFlinger::~SurfaceFlinger() 132 { 133 glDeleteTextures(1, &mWormholeTexName); 134 } 135 136 sp<IMemoryHeap> SurfaceFlinger::getCblk() const 137 { 138 return mServerHeap; 139 } 140 141 sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 142 { 143 sp<ISurfaceComposerClient> bclient; 144 sp<Client> client(new Client(this)); 145 status_t err = client->initCheck(); 146 if (err == NO_ERROR) { 147 bclient = client; 148 } 149 return bclient; 150 } 151 152 sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 153 { 154 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 155 return gba; 156 } 157 158 const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 159 { 160 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 161 const GraphicPlane& plane(mGraphicPlanes[dpy]); 162 return plane; 163 } 164 165 GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 166 { 167 return const_cast<GraphicPlane&>( 168 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 169 } 170 171 void SurfaceFlinger::bootFinished() 172 { 173 const nsecs_t now = systemTime(); 174 const nsecs_t duration = now - mBootTime; 175 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 176 mBootFinished = true; 177 178 // wait patiently for the window manager death 179 const String16 name("window"); 180 sp<IBinder> window(defaultServiceManager()->getService(name)); 181 if (window != 0) { 182 window->linkToDeath(this); 183 } 184 185 // stop boot animation 186 property_set("ctl.stop", "bootanim"); 187 } 188 189 void SurfaceFlinger::binderDied(const wp<IBinder>& who) 190 { 191 // the window manager died on us. prepare its eulogy. 192 193 // reset screen orientation 194 setOrientation(0, eOrientationDefault, 0); 195 196 // restart the boot-animation 197 property_set("ctl.start", "bootanim"); 198 } 199 200 void SurfaceFlinger::onFirstRef() 201 { 202 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 203 204 // Wait for the main thread to be done with its initialization 205 mReadyToRunBarrier.wait(); 206 } 207 208 static inline uint16_t pack565(int r, int g, int b) { 209 return (r<<11)|(g<<5)|b; 210 } 211 212 status_t SurfaceFlinger::readyToRun() 213 { 214 LOGI( "SurfaceFlinger's main thread ready to run. " 215 "Initializing graphics H/W..."); 216 217 // we only support one display currently 218 int dpy = 0; 219 220 { 221 // initialize the main display 222 GraphicPlane& plane(graphicPlane(dpy)); 223 DisplayHardware* const hw = new DisplayHardware(this, dpy); 224 plane.setDisplayHardware(hw); 225 } 226 227 // create the shared control-block 228 mServerHeap = new MemoryHeapBase(4096, 229 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 230 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 231 232 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 233 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 234 235 new(mServerCblk) surface_flinger_cblk_t; 236 237 // initialize primary screen 238 // (other display should be initialized in the same manner, but 239 // asynchronously, as they could come and go. None of this is supported 240 // yet). 241 const GraphicPlane& plane(graphicPlane(dpy)); 242 const DisplayHardware& hw = plane.displayHardware(); 243 const uint32_t w = hw.getWidth(); 244 const uint32_t h = hw.getHeight(); 245 const uint32_t f = hw.getFormat(); 246 hw.makeCurrent(); 247 248 // initialize the shared control block 249 mServerCblk->connected |= 1<<dpy; 250 display_cblk_t* dcblk = mServerCblk->displays + dpy; 251 memset(dcblk, 0, sizeof(display_cblk_t)); 252 dcblk->w = plane.getWidth(); 253 dcblk->h = plane.getHeight(); 254 dcblk->format = f; 255 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 256 dcblk->xdpi = hw.getDpiX(); 257 dcblk->ydpi = hw.getDpiY(); 258 dcblk->fps = hw.getRefreshRate(); 259 dcblk->density = hw.getDensity(); 260 261 // Initialize OpenGL|ES 262 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 263 glPixelStorei(GL_PACK_ALIGNMENT, 4); 264 glEnableClientState(GL_VERTEX_ARRAY); 265 glEnable(GL_SCISSOR_TEST); 266 glShadeModel(GL_FLAT); 267 glDisable(GL_DITHER); 268 glDisable(GL_CULL_FACE); 269 270 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 271 const uint16_t g1 = pack565(0x17,0x2f,0x17); 272 const uint16_t wormholeTexData[4] = { g0, g1, g1, g0 }; 273 glGenTextures(1, &mWormholeTexName); 274 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 275 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 276 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 277 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 278 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 279 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, 280 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, wormholeTexData); 281 282 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 283 glGenTextures(1, &mProtectedTexName); 284 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 285 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 286 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 287 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 288 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 289 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 290 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 291 292 glViewport(0, 0, w, h); 293 glMatrixMode(GL_PROJECTION); 294 glLoadIdentity(); 295 // put the origin in the left-bottom corner 296 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 297 298 mReadyToRunBarrier.open(); 299 300 /* 301 * We're now ready to accept clients... 302 */ 303 304 // start boot animation 305 property_set("ctl.start", "bootanim"); 306 307 return NO_ERROR; 308 } 309 310 // ---------------------------------------------------------------------------- 311 #if 0 312 #pragma mark - 313 #pragma mark Events Handler 314 #endif 315 316 void SurfaceFlinger::waitForEvent() 317 { 318 while (true) { 319 nsecs_t timeout = -1; 320 sp<MessageBase> msg = mEventQueue.waitMessage(timeout); 321 if (msg != 0) { 322 switch (msg->what) { 323 case MessageQueue::INVALIDATE: 324 // invalidate message, just return to the main loop 325 return; 326 } 327 } 328 } 329 } 330 331 void SurfaceFlinger::signalEvent() { 332 mEventQueue.invalidate(); 333 } 334 335 bool SurfaceFlinger::authenticateSurfaceTexture( 336 const sp<ISurfaceTexture>& surfaceTexture) const { 337 Mutex::Autolock _l(mStateLock); 338 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 339 340 // Check the visible layer list for the ISurface 341 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 342 size_t count = currentLayers.size(); 343 for (size_t i=0 ; i<count ; i++) { 344 const sp<LayerBase>& layer(currentLayers[i]); 345 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 346 if (lbc != NULL) { 347 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 348 if (lbcBinder == surfaceTextureBinder) { 349 return true; 350 } 351 } 352 } 353 354 // Check the layers in the purgatory. This check is here so that if a 355 // SurfaceTexture gets destroyed before all the clients are done using it, 356 // the error will not be reported as "surface XYZ is not authenticated", but 357 // will instead fail later on when the client tries to use the surface, 358 // which should be reported as "surface XYZ returned an -ENODEV". The 359 // purgatorized layers are no less authentic than the visible ones, so this 360 // should not cause any harm. 361 size_t purgatorySize = mLayerPurgatory.size(); 362 for (size_t i=0 ; i<purgatorySize ; i++) { 363 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 364 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 365 if (lbc != NULL) { 366 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 367 if (lbcBinder == surfaceTextureBinder) { 368 return true; 369 } 370 } 371 } 372 373 return false; 374 } 375 376 status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 377 nsecs_t reltime, uint32_t flags) 378 { 379 return mEventQueue.postMessage(msg, reltime, flags); 380 } 381 382 status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 383 nsecs_t reltime, uint32_t flags) 384 { 385 status_t res = mEventQueue.postMessage(msg, reltime, flags); 386 if (res == NO_ERROR) { 387 msg->wait(); 388 } 389 return res; 390 } 391 392 // ---------------------------------------------------------------------------- 393 #if 0 394 #pragma mark - 395 #pragma mark Main loop 396 #endif 397 398 bool SurfaceFlinger::threadLoop() 399 { 400 waitForEvent(); 401 402 // check for transactions 403 if (UNLIKELY(mConsoleSignals)) { 404 handleConsoleEvents(); 405 } 406 407 // if we're in a global transaction, don't do anything. 408 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 409 uint32_t transactionFlags = peekTransactionFlags(mask); 410 if (UNLIKELY(transactionFlags)) { 411 handleTransaction(transactionFlags); 412 } 413 414 // post surfaces (if needed) 415 handlePageFlip(); 416 417 if (mDirtyRegion.isEmpty()) { 418 // nothing new to do. 419 return true; 420 } 421 422 if (UNLIKELY(mHwWorkListDirty)) { 423 // build the h/w work list 424 handleWorkList(); 425 } 426 427 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 428 if (LIKELY(hw.canDraw())) { 429 // repaint the framebuffer (if needed) 430 431 const int index = hw.getCurrentBufferIndex(); 432 GraphicLog& logger(GraphicLog::getInstance()); 433 434 logger.log(GraphicLog::SF_REPAINT, index); 435 handleRepaint(); 436 437 // inform the h/w that we're done compositing 438 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 439 hw.compositionComplete(); 440 441 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 442 postFramebuffer(); 443 444 logger.log(GraphicLog::SF_REPAINT_DONE, index); 445 } else { 446 // pretend we did the post 447 hw.compositionComplete(); 448 usleep(16667); // 60 fps period 449 } 450 return true; 451 } 452 453 void SurfaceFlinger::postFramebuffer() 454 { 455 // this should never happen. we do the flip anyways so we don't 456 // risk to cause a deadlock with hwc 457 LOGW_IF(mSwapRegion.isEmpty(), "mSwapRegion is empty"); 458 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 459 const nsecs_t now = systemTime(); 460 mDebugInSwapBuffers = now; 461 hw.flip(mSwapRegion); 462 mLastSwapBufferTime = systemTime() - now; 463 mDebugInSwapBuffers = 0; 464 mSwapRegion.clear(); 465 } 466 467 void SurfaceFlinger::handleConsoleEvents() 468 { 469 // something to do with the console 470 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 471 472 int what = android_atomic_and(0, &mConsoleSignals); 473 if (what & eConsoleAcquired) { 474 hw.acquireScreen(); 475 // this is a temporary work-around, eventually this should be called 476 // by the power-manager 477 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 478 } 479 480 if (what & eConsoleReleased) { 481 if (hw.isScreenAcquired()) { 482 hw.releaseScreen(); 483 } 484 } 485 486 mDirtyRegion.set(hw.bounds()); 487 } 488 489 void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 490 { 491 Mutex::Autolock _l(mStateLock); 492 const nsecs_t now = systemTime(); 493 mDebugInTransaction = now; 494 495 // Here we're guaranteed that some transaction flags are set 496 // so we can call handleTransactionLocked() unconditionally. 497 // We call getTransactionFlags(), which will also clear the flags, 498 // with mStateLock held to guarantee that mCurrentState won't change 499 // until the transaction is committed. 500 501 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 502 transactionFlags = getTransactionFlags(mask); 503 handleTransactionLocked(transactionFlags); 504 505 mLastTransactionTime = systemTime() - now; 506 mDebugInTransaction = 0; 507 invalidateHwcGeometry(); 508 // here the transaction has been committed 509 } 510 511 void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 512 { 513 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 514 const size_t count = currentLayers.size(); 515 516 /* 517 * Traversal of the children 518 * (perform the transaction for each of them if needed) 519 */ 520 521 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 522 if (layersNeedTransaction) { 523 for (size_t i=0 ; i<count ; i++) { 524 const sp<LayerBase>& layer = currentLayers[i]; 525 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 526 if (!trFlags) continue; 527 528 const uint32_t flags = layer->doTransaction(0); 529 if (flags & Layer::eVisibleRegion) 530 mVisibleRegionsDirty = true; 531 } 532 } 533 534 /* 535 * Perform our own transaction if needed 536 */ 537 538 if (transactionFlags & eTransactionNeeded) { 539 if (mCurrentState.orientation != mDrawingState.orientation) { 540 // the orientation has changed, recompute all visible regions 541 // and invalidate everything. 542 543 const int dpy = 0; 544 const int orientation = mCurrentState.orientation; 545 // Currently unused: const uint32_t flags = mCurrentState.orientationFlags; 546 GraphicPlane& plane(graphicPlane(dpy)); 547 plane.setOrientation(orientation); 548 549 // update the shared control block 550 const DisplayHardware& hw(plane.displayHardware()); 551 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 552 dcblk->orientation = orientation; 553 dcblk->w = plane.getWidth(); 554 dcblk->h = plane.getHeight(); 555 556 mVisibleRegionsDirty = true; 557 mDirtyRegion.set(hw.bounds()); 558 } 559 560 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 561 // layers have been added 562 mVisibleRegionsDirty = true; 563 } 564 565 // some layers might have been removed, so 566 // we need to update the regions they're exposing. 567 if (mLayersRemoved) { 568 mLayersRemoved = false; 569 mVisibleRegionsDirty = true; 570 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 571 const size_t count = previousLayers.size(); 572 for (size_t i=0 ; i<count ; i++) { 573 const sp<LayerBase>& layer(previousLayers[i]); 574 if (currentLayers.indexOf( layer ) < 0) { 575 // this layer is not visible anymore 576 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 577 } 578 } 579 } 580 } 581 582 commitTransaction(); 583 } 584 585 void SurfaceFlinger::computeVisibleRegions( 586 const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 587 { 588 const GraphicPlane& plane(graphicPlane(0)); 589 const Transform& planeTransform(plane.transform()); 590 const DisplayHardware& hw(plane.displayHardware()); 591 const Region screenRegion(hw.bounds()); 592 593 Region aboveOpaqueLayers; 594 Region aboveCoveredLayers; 595 Region dirty; 596 597 bool secureFrameBuffer = false; 598 599 size_t i = currentLayers.size(); 600 while (i--) { 601 const sp<LayerBase>& layer = currentLayers[i]; 602 layer->validateVisibility(planeTransform); 603 604 // start with the whole surface at its current location 605 const Layer::State& s(layer->drawingState()); 606 607 /* 608 * opaqueRegion: area of a surface that is fully opaque. 609 */ 610 Region opaqueRegion; 611 612 /* 613 * visibleRegion: area of a surface that is visible on screen 614 * and not fully transparent. This is essentially the layer's 615 * footprint minus the opaque regions above it. 616 * Areas covered by a translucent surface are considered visible. 617 */ 618 Region visibleRegion; 619 620 /* 621 * coveredRegion: area of a surface that is covered by all 622 * visible regions above it (which includes the translucent areas). 623 */ 624 Region coveredRegion; 625 626 627 // handle hidden surfaces by setting the visible region to empty 628 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 629 const bool translucent = !layer->isOpaque(); 630 const Rect bounds(layer->visibleBounds()); 631 visibleRegion.set(bounds); 632 visibleRegion.andSelf(screenRegion); 633 if (!visibleRegion.isEmpty()) { 634 // Remove the transparent area from the visible region 635 if (translucent) { 636 visibleRegion.subtractSelf(layer->transparentRegionScreen); 637 } 638 639 // compute the opaque region 640 const int32_t layerOrientation = layer->getOrientation(); 641 if (s.alpha==255 && !translucent && 642 ((layerOrientation & Transform::ROT_INVALID) == false)) { 643 // the opaque region is the layer's footprint 644 opaqueRegion = visibleRegion; 645 } 646 } 647 } 648 649 // Clip the covered region to the visible region 650 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 651 652 // Update aboveCoveredLayers for next (lower) layer 653 aboveCoveredLayers.orSelf(visibleRegion); 654 655 // subtract the opaque region covered by the layers above us 656 visibleRegion.subtractSelf(aboveOpaqueLayers); 657 658 // compute this layer's dirty region 659 if (layer->contentDirty) { 660 // we need to invalidate the whole region 661 dirty = visibleRegion; 662 // as well, as the old visible region 663 dirty.orSelf(layer->visibleRegionScreen); 664 layer->contentDirty = false; 665 } else { 666 /* compute the exposed region: 667 * the exposed region consists of two components: 668 * 1) what's VISIBLE now and was COVERED before 669 * 2) what's EXPOSED now less what was EXPOSED before 670 * 671 * note that (1) is conservative, we start with the whole 672 * visible region but only keep what used to be covered by 673 * something -- which mean it may have been exposed. 674 * 675 * (2) handles areas that were not covered by anything but got 676 * exposed because of a resize. 677 */ 678 const Region newExposed = visibleRegion - coveredRegion; 679 const Region oldVisibleRegion = layer->visibleRegionScreen; 680 const Region oldCoveredRegion = layer->coveredRegionScreen; 681 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 682 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 683 } 684 dirty.subtractSelf(aboveOpaqueLayers); 685 686 // accumulate to the screen dirty region 687 dirtyRegion.orSelf(dirty); 688 689 // Update aboveOpaqueLayers for next (lower) layer 690 aboveOpaqueLayers.orSelf(opaqueRegion); 691 692 // Store the visible region is screen space 693 layer->setVisibleRegion(visibleRegion); 694 layer->setCoveredRegion(coveredRegion); 695 696 // If a secure layer is partially visible, lock-down the screen! 697 if (layer->isSecure() && !visibleRegion.isEmpty()) { 698 secureFrameBuffer = true; 699 } 700 } 701 702 // invalidate the areas where a layer was removed 703 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 704 mDirtyRegionRemovedLayer.clear(); 705 706 mSecureFrameBuffer = secureFrameBuffer; 707 opaqueRegion = aboveOpaqueLayers; 708 } 709 710 711 void SurfaceFlinger::commitTransaction() 712 { 713 if (!mLayersPendingRemoval.isEmpty()) { 714 // Notify removed layers now that they can't be drawn from 715 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 716 mLayersPendingRemoval[i]->onRemoved(); 717 } 718 mLayersPendingRemoval.clear(); 719 } 720 721 mDrawingState = mCurrentState; 722 mTransationPending = false; 723 mTransactionCV.broadcast(); 724 } 725 726 void SurfaceFlinger::handlePageFlip() 727 { 728 bool visibleRegions = mVisibleRegionsDirty; 729 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 730 visibleRegions |= lockPageFlip(currentLayers); 731 732 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 733 const Region screenRegion(hw.bounds()); 734 if (visibleRegions) { 735 Region opaqueRegion; 736 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 737 738 /* 739 * rebuild the visible layer list 740 */ 741 const size_t count = currentLayers.size(); 742 mVisibleLayersSortedByZ.clear(); 743 mVisibleLayersSortedByZ.setCapacity(count); 744 for (size_t i=0 ; i<count ; i++) { 745 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 746 mVisibleLayersSortedByZ.add(currentLayers[i]); 747 } 748 749 mWormholeRegion = screenRegion.subtract(opaqueRegion); 750 mVisibleRegionsDirty = false; 751 invalidateHwcGeometry(); 752 } 753 754 unlockPageFlip(currentLayers); 755 756 mDirtyRegion.orSelf(getAndClearInvalidateRegion()); 757 mDirtyRegion.andSelf(screenRegion); 758 } 759 760 void SurfaceFlinger::invalidateHwcGeometry() 761 { 762 mHwWorkListDirty = true; 763 } 764 765 bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers) 766 { 767 bool recomputeVisibleRegions = false; 768 size_t count = currentLayers.size(); 769 sp<LayerBase> const* layers = currentLayers.array(); 770 for (size_t i=0 ; i<count ; i++) { 771 const sp<LayerBase>& layer(layers[i]); 772 layer->lockPageFlip(recomputeVisibleRegions); 773 } 774 return recomputeVisibleRegions; 775 } 776 777 void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers) 778 { 779 const GraphicPlane& plane(graphicPlane(0)); 780 const Transform& planeTransform(plane.transform()); 781 size_t count = currentLayers.size(); 782 sp<LayerBase> const* layers = currentLayers.array(); 783 for (size_t i=0 ; i<count ; i++) { 784 const sp<LayerBase>& layer(layers[i]); 785 layer->unlockPageFlip(planeTransform, mDirtyRegion); 786 } 787 } 788 789 void SurfaceFlinger::handleWorkList() 790 { 791 mHwWorkListDirty = false; 792 HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer()); 793 if (hwc.initCheck() == NO_ERROR) { 794 const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ); 795 const size_t count = currentLayers.size(); 796 hwc.createWorkList(count); 797 hwc_layer_t* const cur(hwc.getLayers()); 798 for (size_t i=0 ; cur && i<count ; i++) { 799 currentLayers[i]->setGeometry(&cur[i]); 800 if (mDebugDisableHWC || mDebugRegion) { 801 cur[i].compositionType = HWC_FRAMEBUFFER; 802 cur[i].flags |= HWC_SKIP_LAYER; 803 } 804 } 805 } 806 } 807 808 void SurfaceFlinger::handleRepaint() 809 { 810 // compute the invalid region 811 mSwapRegion.orSelf(mDirtyRegion); 812 813 if (UNLIKELY(mDebugRegion)) { 814 debugFlashRegions(); 815 } 816 817 // set the frame buffer 818 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 819 glMatrixMode(GL_MODELVIEW); 820 glLoadIdentity(); 821 822 uint32_t flags = hw.getFlags(); 823 if ((flags & DisplayHardware::SWAP_RECTANGLE) || 824 (flags & DisplayHardware::BUFFER_PRESERVED)) 825 { 826 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 827 // takes a rectangle, we must make sure to update that whole 828 // rectangle in that case 829 if (flags & DisplayHardware::SWAP_RECTANGLE) { 830 // TODO: we really should be able to pass a region to 831 // SWAP_RECTANGLE so that we don't have to redraw all this. 832 mDirtyRegion.set(mSwapRegion.bounds()); 833 } else { 834 // in the BUFFER_PRESERVED case, obviously, we can update only 835 // what's needed and nothing more. 836 // NOTE: this is NOT a common case, as preserving the backbuffer 837 // is costly and usually involves copying the whole update back. 838 } 839 } else { 840 if (flags & DisplayHardware::PARTIAL_UPDATES) { 841 // We need to redraw the rectangle that will be updated 842 // (pushed to the framebuffer). 843 // This is needed because PARTIAL_UPDATES only takes one 844 // rectangle instead of a region (see DisplayHardware::flip()) 845 mDirtyRegion.set(mSwapRegion.bounds()); 846 } else { 847 // we need to redraw everything (the whole screen) 848 mDirtyRegion.set(hw.bounds()); 849 mSwapRegion = mDirtyRegion; 850 } 851 } 852 853 setupHardwareComposer(mDirtyRegion); 854 composeSurfaces(mDirtyRegion); 855 856 // update the swap region and clear the dirty region 857 mSwapRegion.orSelf(mDirtyRegion); 858 mDirtyRegion.clear(); 859 } 860 861 void SurfaceFlinger::setupHardwareComposer(Region& dirtyInOut) 862 { 863 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 864 HWComposer& hwc(hw.getHwComposer()); 865 hwc_layer_t* const cur(hwc.getLayers()); 866 if (!cur) { 867 return; 868 } 869 870 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 871 size_t count = layers.size(); 872 873 LOGE_IF(hwc.getNumLayers() != count, 874 "HAL number of layers (%d) doesn't match surfaceflinger (%d)", 875 hwc.getNumLayers(), count); 876 877 // just to be extra-safe, use the smallest count 878 if (hwc.initCheck() == NO_ERROR) { 879 count = count < hwc.getNumLayers() ? count : hwc.getNumLayers(); 880 } 881 882 /* 883 * update the per-frame h/w composer data for each layer 884 * and build the transparent region of the FB 885 */ 886 for (size_t i=0 ; i<count ; i++) { 887 const sp<LayerBase>& layer(layers[i]); 888 layer->setPerFrameData(&cur[i]); 889 } 890 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 891 status_t err = hwc.prepare(); 892 LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 893 894 if (err == NO_ERROR) { 895 // what's happening here is tricky. 896 // we want to clear all the layers with the CLEAR_FB flags 897 // that are opaque. 898 // however, since some GPU are efficient at preserving 899 // the backbuffer, we want to take advantage of that so we do the 900 // clear only in the dirty region (other areas will be preserved 901 // on those GPUs). 902 // NOTE: on non backbuffer preserving GPU, the dirty region 903 // has already been expanded as needed, so the code is correct 904 // there too. 905 // 906 // However, the content of the framebuffer cannot be trusted when 907 // we switch to/from FB/OVERLAY, in which case we need to 908 // expand the dirty region to those areas too. 909 // 910 // Note also that there is a special case when switching from 911 // "no layers in FB" to "some layers in FB", where we need to redraw 912 // the entire FB, since some areas might contain uninitialized 913 // data. 914 // 915 // Also we want to make sure to not clear areas that belong to 916 // layers above that won't redraw (we would just be erasing them), 917 // that is, we can't erase anything outside the dirty region. 918 919 Region transparent; 920 921 if (!fbLayerCount && hwc.getLayerCount(HWC_FRAMEBUFFER)) { 922 transparent.set(hw.getBounds()); 923 dirtyInOut = transparent; 924 } else { 925 for (size_t i=0 ; i<count ; i++) { 926 const sp<LayerBase>& layer(layers[i]); 927 if ((cur[i].hints & HWC_HINT_CLEAR_FB) && layer->isOpaque()) { 928 transparent.orSelf(layer->visibleRegionScreen); 929 } 930 bool isOverlay = (cur[i].compositionType != HWC_FRAMEBUFFER); 931 if (isOverlay != layer->isOverlay()) { 932 // we transitioned to/from overlay, so add this layer 933 // to the dirty region so the framebuffer can be either 934 // cleared or redrawn. 935 dirtyInOut.orSelf(layer->visibleRegionScreen); 936 } 937 layer->setOverlay(isOverlay); 938 } 939 // don't erase stuff outside the dirty region 940 transparent.andSelf(dirtyInOut); 941 } 942 943 /* 944 * clear the area of the FB that need to be transparent 945 */ 946 if (!transparent.isEmpty()) { 947 glClearColor(0,0,0,0); 948 Region::const_iterator it = transparent.begin(); 949 Region::const_iterator const end = transparent.end(); 950 const int32_t height = hw.getHeight(); 951 while (it != end) { 952 const Rect& r(*it++); 953 const GLint sy = height - (r.top + r.height()); 954 glScissor(r.left, sy, r.width(), r.height()); 955 glClear(GL_COLOR_BUFFER_BIT); 956 } 957 } 958 } 959 } 960 961 void SurfaceFlinger::composeSurfaces(const Region& dirty) 962 { 963 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 964 HWComposer& hwc(hw.getHwComposer()); 965 966 const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER); 967 if (UNLIKELY(fbLayerCount && !mWormholeRegion.isEmpty())) { 968 // should never happen unless the window manager has a bug 969 // draw something... 970 drawWormhole(); 971 } 972 973 /* 974 * and then, render the layers targeted at the framebuffer 975 */ 976 hwc_layer_t* const cur(hwc.getLayers()); 977 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 978 size_t count = layers.size(); 979 for (size_t i=0 ; i<count ; i++) { 980 if (cur && (cur[i].compositionType != HWC_FRAMEBUFFER)) { 981 continue; 982 } 983 const sp<LayerBase>& layer(layers[i]); 984 const Region clip(dirty.intersect(layer->visibleRegionScreen)); 985 if (!clip.isEmpty()) { 986 layer->draw(clip); 987 } 988 } 989 } 990 991 void SurfaceFlinger::debugFlashRegions() 992 { 993 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 994 const uint32_t flags = hw.getFlags(); 995 const int32_t height = hw.getHeight(); 996 if (mSwapRegion.isEmpty()) { 997 return; 998 } 999 1000 if (!((flags & DisplayHardware::SWAP_RECTANGLE) || 1001 (flags & DisplayHardware::BUFFER_PRESERVED))) { 1002 const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ? 1003 mDirtyRegion.bounds() : hw.bounds()); 1004 composeSurfaces(repaint); 1005 } 1006 1007 glDisable(GL_TEXTURE_EXTERNAL_OES); 1008 glDisable(GL_TEXTURE_2D); 1009 glDisable(GL_BLEND); 1010 glDisable(GL_SCISSOR_TEST); 1011 1012 static int toggle = 0; 1013 toggle = 1 - toggle; 1014 if (toggle) { 1015 glColor4f(1, 0, 1, 1); 1016 } else { 1017 glColor4f(1, 1, 0, 1); 1018 } 1019 1020 Region::const_iterator it = mDirtyRegion.begin(); 1021 Region::const_iterator const end = mDirtyRegion.end(); 1022 while (it != end) { 1023 const Rect& r = *it++; 1024 GLfloat vertices[][2] = { 1025 { r.left, height - r.top }, 1026 { r.left, height - r.bottom }, 1027 { r.right, height - r.bottom }, 1028 { r.right, height - r.top } 1029 }; 1030 glVertexPointer(2, GL_FLOAT, 0, vertices); 1031 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1032 } 1033 1034 hw.flip(mSwapRegion); 1035 1036 if (mDebugRegion > 1) 1037 usleep(mDebugRegion * 1000); 1038 1039 glEnable(GL_SCISSOR_TEST); 1040 } 1041 1042 void SurfaceFlinger::drawWormhole() const 1043 { 1044 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1045 if (region.isEmpty()) 1046 return; 1047 1048 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1049 const int32_t width = hw.getWidth(); 1050 const int32_t height = hw.getHeight(); 1051 1052 if (LIKELY(!mDebugBackground)) { 1053 glClearColor(0,0,0,0); 1054 Region::const_iterator it = region.begin(); 1055 Region::const_iterator const end = region.end(); 1056 while (it != end) { 1057 const Rect& r = *it++; 1058 const GLint sy = height - (r.top + r.height()); 1059 glScissor(r.left, sy, r.width(), r.height()); 1060 glClear(GL_COLOR_BUFFER_BIT); 1061 } 1062 } else { 1063 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1064 { width, height }, { 0, height } }; 1065 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1066 1067 glVertexPointer(2, GL_SHORT, 0, vertices); 1068 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1069 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1070 1071 glDisable(GL_TEXTURE_EXTERNAL_OES); 1072 glEnable(GL_TEXTURE_2D); 1073 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1074 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1075 glMatrixMode(GL_TEXTURE); 1076 glLoadIdentity(); 1077 1078 glDisable(GL_BLEND); 1079 1080 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1081 Region::const_iterator it = region.begin(); 1082 Region::const_iterator const end = region.end(); 1083 while (it != end) { 1084 const Rect& r = *it++; 1085 const GLint sy = height - (r.top + r.height()); 1086 glScissor(r.left, sy, r.width(), r.height()); 1087 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1088 } 1089 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1090 glDisable(GL_TEXTURE_2D); 1091 glLoadIdentity(); 1092 glMatrixMode(GL_MODELVIEW); 1093 } 1094 } 1095 1096 void SurfaceFlinger::debugShowFPS() const 1097 { 1098 static int mFrameCount; 1099 static int mLastFrameCount = 0; 1100 static nsecs_t mLastFpsTime = 0; 1101 static float mFps = 0; 1102 mFrameCount++; 1103 nsecs_t now = systemTime(); 1104 nsecs_t diff = now - mLastFpsTime; 1105 if (diff > ms2ns(250)) { 1106 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1107 mLastFpsTime = now; 1108 mLastFrameCount = mFrameCount; 1109 } 1110 // XXX: mFPS has the value we want 1111 } 1112 1113 status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1114 { 1115 Mutex::Autolock _l(mStateLock); 1116 addLayer_l(layer); 1117 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1118 return NO_ERROR; 1119 } 1120 1121 status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1122 { 1123 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1124 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1125 } 1126 1127 ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1128 const sp<LayerBaseClient>& lbc) 1129 { 1130 // attach this layer to the client 1131 size_t name = client->attachLayer(lbc); 1132 1133 Mutex::Autolock _l(mStateLock); 1134 1135 // add this layer to the current state list 1136 addLayer_l(lbc); 1137 1138 return ssize_t(name); 1139 } 1140 1141 status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1142 { 1143 Mutex::Autolock _l(mStateLock); 1144 status_t err = purgatorizeLayer_l(layer); 1145 if (err == NO_ERROR) 1146 setTransactionFlags(eTransactionNeeded); 1147 return err; 1148 } 1149 1150 status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1151 { 1152 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1153 if (lbc != 0) { 1154 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1155 } 1156 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1157 if (index >= 0) { 1158 mLayersRemoved = true; 1159 return NO_ERROR; 1160 } 1161 return status_t(index); 1162 } 1163 1164 status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1165 { 1166 // First add the layer to the purgatory list, which makes sure it won't 1167 // go away, then remove it from the main list (through a transaction). 1168 ssize_t err = removeLayer_l(layerBase); 1169 if (err >= 0) { 1170 mLayerPurgatory.add(layerBase); 1171 } 1172 1173 mLayersPendingRemoval.push(layerBase); 1174 1175 // it's possible that we don't find a layer, because it might 1176 // have been destroyed already -- this is not technically an error 1177 // from the user because there is a race between Client::destroySurface(), 1178 // ~Client() and ~ISurface(). 1179 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1180 } 1181 1182 status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1183 { 1184 layer->forceVisibilityTransaction(); 1185 setTransactionFlags(eTraversalNeeded); 1186 return NO_ERROR; 1187 } 1188 1189 uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1190 { 1191 return android_atomic_release_load(&mTransactionFlags); 1192 } 1193 1194 uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1195 { 1196 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1197 } 1198 1199 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1200 { 1201 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1202 if ((old & flags)==0) { // wake the server up 1203 signalEvent(); 1204 } 1205 return old; 1206 } 1207 1208 1209 void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state, 1210 int orientation, uint32_t flags) { 1211 Mutex::Autolock _l(mStateLock); 1212 1213 uint32_t transactionFlags = 0; 1214 if (mCurrentState.orientation != orientation) { 1215 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1216 mCurrentState.orientation = orientation; 1217 transactionFlags |= eTransactionNeeded; 1218 } else if (orientation != eOrientationUnchanged) { 1219 LOGW("setTransactionState: ignoring unrecognized orientation: %d", 1220 orientation); 1221 } 1222 } 1223 1224 const size_t count = state.size(); 1225 for (size_t i=0 ; i<count ; i++) { 1226 const ComposerState& s(state[i]); 1227 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1228 transactionFlags |= setClientStateLocked(client, s.state); 1229 } 1230 1231 if (transactionFlags) { 1232 // this triggers the transaction 1233 setTransactionFlags(transactionFlags); 1234 1235 // if this is a synchronous transaction, wait for it to take effect 1236 // before returning. 1237 if (flags & eSynchronous) { 1238 mTransationPending = true; 1239 } 1240 while (mTransationPending) { 1241 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1242 if (CC_UNLIKELY(err != NO_ERROR)) { 1243 // just in case something goes wrong in SF, return to the 1244 // called after a few seconds. 1245 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1246 mTransationPending = false; 1247 break; 1248 } 1249 } 1250 } 1251 } 1252 1253 int SurfaceFlinger::setOrientation(DisplayID dpy, 1254 int orientation, uint32_t flags) 1255 { 1256 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1257 return BAD_VALUE; 1258 1259 Mutex::Autolock _l(mStateLock); 1260 if (mCurrentState.orientation != orientation) { 1261 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1262 mCurrentState.orientationFlags = flags; 1263 mCurrentState.orientation = orientation; 1264 setTransactionFlags(eTransactionNeeded); 1265 mTransactionCV.wait(mStateLock); 1266 } else { 1267 orientation = BAD_VALUE; 1268 } 1269 } 1270 return orientation; 1271 } 1272 1273 sp<ISurface> SurfaceFlinger::createSurface( 1274 ISurfaceComposerClient::surface_data_t* params, 1275 const String8& name, 1276 const sp<Client>& client, 1277 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1278 uint32_t flags) 1279 { 1280 sp<LayerBaseClient> layer; 1281 sp<ISurface> surfaceHandle; 1282 1283 if (int32_t(w|h) < 0) { 1284 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1285 int(w), int(h)); 1286 return surfaceHandle; 1287 } 1288 1289 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1290 sp<Layer> normalLayer; 1291 switch (flags & eFXSurfaceMask) { 1292 case eFXSurfaceNormal: 1293 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1294 layer = normalLayer; 1295 break; 1296 case eFXSurfaceBlur: 1297 // for now we treat Blur as Dim, until we can implement it 1298 // efficiently. 1299 case eFXSurfaceDim: 1300 layer = createDimSurface(client, d, w, h, flags); 1301 break; 1302 case eFXSurfaceScreenshot: 1303 layer = createScreenshotSurface(client, d, w, h, flags); 1304 break; 1305 } 1306 1307 if (layer != 0) { 1308 layer->initStates(w, h, flags); 1309 layer->setName(name); 1310 ssize_t token = addClientLayer(client, layer); 1311 1312 surfaceHandle = layer->getSurface(); 1313 if (surfaceHandle != 0) { 1314 params->token = token; 1315 params->identity = layer->getIdentity(); 1316 if (normalLayer != 0) { 1317 Mutex::Autolock _l(mStateLock); 1318 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1319 } 1320 } 1321 1322 setTransactionFlags(eTransactionNeeded); 1323 } 1324 1325 return surfaceHandle; 1326 } 1327 1328 sp<Layer> SurfaceFlinger::createNormalSurface( 1329 const sp<Client>& client, DisplayID display, 1330 uint32_t w, uint32_t h, uint32_t flags, 1331 PixelFormat& format) 1332 { 1333 // initialize the surfaces 1334 switch (format) { // TODO: take h/w into account 1335 case PIXEL_FORMAT_TRANSPARENT: 1336 case PIXEL_FORMAT_TRANSLUCENT: 1337 format = PIXEL_FORMAT_RGBA_8888; 1338 break; 1339 case PIXEL_FORMAT_OPAQUE: 1340 #ifdef NO_RGBX_8888 1341 format = PIXEL_FORMAT_RGB_565; 1342 #else 1343 format = PIXEL_FORMAT_RGBX_8888; 1344 #endif 1345 break; 1346 } 1347 1348 #ifdef NO_RGBX_8888 1349 if (format == PIXEL_FORMAT_RGBX_8888) 1350 format = PIXEL_FORMAT_RGBA_8888; 1351 #endif 1352 1353 sp<Layer> layer = new Layer(this, display, client); 1354 status_t err = layer->setBuffers(w, h, format, flags); 1355 if (LIKELY(err != NO_ERROR)) { 1356 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1357 layer.clear(); 1358 } 1359 return layer; 1360 } 1361 1362 sp<LayerDim> SurfaceFlinger::createDimSurface( 1363 const sp<Client>& client, DisplayID display, 1364 uint32_t w, uint32_t h, uint32_t flags) 1365 { 1366 sp<LayerDim> layer = new LayerDim(this, display, client); 1367 return layer; 1368 } 1369 1370 sp<LayerScreenshot> SurfaceFlinger::createScreenshotSurface( 1371 const sp<Client>& client, DisplayID display, 1372 uint32_t w, uint32_t h, uint32_t flags) 1373 { 1374 sp<LayerScreenshot> layer = new LayerScreenshot(this, display, client); 1375 return layer; 1376 } 1377 1378 status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1379 { 1380 /* 1381 * called by the window manager, when a surface should be marked for 1382 * destruction. 1383 * 1384 * The surface is removed from the current and drawing lists, but placed 1385 * in the purgatory queue, so it's not destroyed right-away (we need 1386 * to wait for all client's references to go away first). 1387 */ 1388 1389 status_t err = NAME_NOT_FOUND; 1390 Mutex::Autolock _l(mStateLock); 1391 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1392 if (layer != 0) { 1393 err = purgatorizeLayer_l(layer); 1394 if (err == NO_ERROR) { 1395 setTransactionFlags(eTransactionNeeded); 1396 } 1397 } 1398 return err; 1399 } 1400 1401 status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1402 { 1403 // called by ~ISurface() when all references are gone 1404 status_t err = NO_ERROR; 1405 sp<LayerBaseClient> l(layer.promote()); 1406 if (l != NULL) { 1407 Mutex::Autolock _l(mStateLock); 1408 err = removeLayer_l(l); 1409 if (err == NAME_NOT_FOUND) { 1410 // The surface wasn't in the current list, which means it was 1411 // removed already, which means it is in the purgatory, 1412 // and need to be removed from there. 1413 ssize_t idx = mLayerPurgatory.remove(l); 1414 LOGE_IF(idx < 0, 1415 "layer=%p is not in the purgatory list", l.get()); 1416 } 1417 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1418 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1419 } 1420 return err; 1421 } 1422 1423 uint32_t SurfaceFlinger::setClientStateLocked( 1424 const sp<Client>& client, 1425 const layer_state_t& s) 1426 { 1427 uint32_t flags = 0; 1428 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1429 if (layer != 0) { 1430 const uint32_t what = s.what; 1431 if (what & ePositionChanged) { 1432 if (layer->setPosition(s.x, s.y)) 1433 flags |= eTraversalNeeded; 1434 } 1435 if (what & eLayerChanged) { 1436 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1437 if (layer->setLayer(s.z)) { 1438 mCurrentState.layersSortedByZ.removeAt(idx); 1439 mCurrentState.layersSortedByZ.add(layer); 1440 // we need traversal (state changed) 1441 // AND transaction (list changed) 1442 flags |= eTransactionNeeded|eTraversalNeeded; 1443 } 1444 } 1445 if (what & eSizeChanged) { 1446 if (layer->setSize(s.w, s.h)) { 1447 flags |= eTraversalNeeded; 1448 } 1449 } 1450 if (what & eAlphaChanged) { 1451 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1452 flags |= eTraversalNeeded; 1453 } 1454 if (what & eMatrixChanged) { 1455 if (layer->setMatrix(s.matrix)) 1456 flags |= eTraversalNeeded; 1457 } 1458 if (what & eTransparentRegionChanged) { 1459 if (layer->setTransparentRegionHint(s.transparentRegion)) 1460 flags |= eTraversalNeeded; 1461 } 1462 if (what & eVisibilityChanged) { 1463 if (layer->setFlags(s.flags, s.mask)) 1464 flags |= eTraversalNeeded; 1465 } 1466 } 1467 return flags; 1468 } 1469 1470 void SurfaceFlinger::screenReleased(int dpy) 1471 { 1472 // this may be called by a signal handler, we can't do too much in here 1473 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1474 signalEvent(); 1475 } 1476 1477 void SurfaceFlinger::screenAcquired(int dpy) 1478 { 1479 // this may be called by a signal handler, we can't do too much in here 1480 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1481 signalEvent(); 1482 } 1483 1484 status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1485 { 1486 const size_t SIZE = 4096; 1487 char buffer[SIZE]; 1488 String8 result; 1489 1490 if (!PermissionCache::checkCallingPermission(sDump)) { 1491 snprintf(buffer, SIZE, "Permission Denial: " 1492 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1493 IPCThreadState::self()->getCallingPid(), 1494 IPCThreadState::self()->getCallingUid()); 1495 result.append(buffer); 1496 } else { 1497 1498 // figure out if we're stuck somewhere 1499 const nsecs_t now = systemTime(); 1500 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1501 const nsecs_t inTransaction(mDebugInTransaction); 1502 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1503 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1504 1505 // Try to get the main lock, but don't insist if we can't 1506 // (this would indicate SF is stuck, but we want to be able to 1507 // print something in dumpsys). 1508 int retry = 3; 1509 while (mStateLock.tryLock()<0 && --retry>=0) { 1510 usleep(1000000); 1511 } 1512 const bool locked(retry >= 0); 1513 if (!locked) { 1514 snprintf(buffer, SIZE, 1515 "SurfaceFlinger appears to be unresponsive, " 1516 "dumping anyways (no locks held)\n"); 1517 result.append(buffer); 1518 } 1519 1520 /* 1521 * Dump the visible layer list 1522 */ 1523 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1524 const size_t count = currentLayers.size(); 1525 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1526 result.append(buffer); 1527 for (size_t i=0 ; i<count ; i++) { 1528 const sp<LayerBase>& layer(currentLayers[i]); 1529 layer->dump(result, buffer, SIZE); 1530 const Layer::State& s(layer->drawingState()); 1531 s.transparentRegion.dump(result, "transparentRegion"); 1532 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1533 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1534 } 1535 1536 /* 1537 * Dump the layers in the purgatory 1538 */ 1539 1540 const size_t purgatorySize = mLayerPurgatory.size(); 1541 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1542 result.append(buffer); 1543 for (size_t i=0 ; i<purgatorySize ; i++) { 1544 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1545 layer->shortDump(result, buffer, SIZE); 1546 } 1547 1548 /* 1549 * Dump SurfaceFlinger global state 1550 */ 1551 1552 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1553 result.append(buffer); 1554 1555 const GLExtensions& extensions(GLExtensions::getInstance()); 1556 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1557 extensions.getVendor(), 1558 extensions.getRenderer(), 1559 extensions.getVersion()); 1560 result.append(buffer); 1561 1562 snprintf(buffer, SIZE, "EGL : %s\n", 1563 eglQueryString(graphicPlane(0).getEGLDisplay(), 1564 EGL_VERSION_HW_ANDROID)); 1565 result.append(buffer); 1566 1567 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1568 result.append(buffer); 1569 1570 mWormholeRegion.dump(result, "WormholeRegion"); 1571 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1572 snprintf(buffer, SIZE, 1573 " orientation=%d, canDraw=%d\n", 1574 mCurrentState.orientation, hw.canDraw()); 1575 result.append(buffer); 1576 snprintf(buffer, SIZE, 1577 " last eglSwapBuffers() time: %f us\n" 1578 " last transaction time : %f us\n" 1579 " refresh-rate : %f fps\n" 1580 " x-dpi : %f\n" 1581 " y-dpi : %f\n", 1582 mLastSwapBufferTime/1000.0, 1583 mLastTransactionTime/1000.0, 1584 hw.getRefreshRate(), 1585 hw.getDpiX(), 1586 hw.getDpiY()); 1587 result.append(buffer); 1588 1589 if (inSwapBuffersDuration || !locked) { 1590 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1591 inSwapBuffersDuration/1000.0); 1592 result.append(buffer); 1593 } 1594 1595 if (inTransactionDuration || !locked) { 1596 snprintf(buffer, SIZE, " transaction time: %f us\n", 1597 inTransactionDuration/1000.0); 1598 result.append(buffer); 1599 } 1600 1601 /* 1602 * Dump HWComposer state 1603 */ 1604 HWComposer& hwc(hw.getHwComposer()); 1605 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1606 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1607 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1608 result.append(buffer); 1609 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1610 1611 /* 1612 * Dump gralloc state 1613 */ 1614 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1615 alloc.dump(result); 1616 hw.dump(result); 1617 1618 if (locked) { 1619 mStateLock.unlock(); 1620 } 1621 } 1622 write(fd, result.string(), result.size()); 1623 return NO_ERROR; 1624 } 1625 1626 status_t SurfaceFlinger::onTransact( 1627 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1628 { 1629 switch (code) { 1630 case CREATE_CONNECTION: 1631 case SET_TRANSACTION_STATE: 1632 case SET_ORIENTATION: 1633 case BOOT_FINISHED: 1634 case TURN_ELECTRON_BEAM_OFF: 1635 case TURN_ELECTRON_BEAM_ON: 1636 { 1637 // codes that require permission check 1638 IPCThreadState* ipc = IPCThreadState::self(); 1639 const int pid = ipc->getCallingPid(); 1640 const int uid = ipc->getCallingUid(); 1641 if ((uid != AID_GRAPHICS) && 1642 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1643 LOGE("Permission Denial: " 1644 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1645 return PERMISSION_DENIED; 1646 } 1647 break; 1648 } 1649 case CAPTURE_SCREEN: 1650 { 1651 // codes that require permission check 1652 IPCThreadState* ipc = IPCThreadState::self(); 1653 const int pid = ipc->getCallingPid(); 1654 const int uid = ipc->getCallingUid(); 1655 if ((uid != AID_GRAPHICS) && 1656 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1657 LOGE("Permission Denial: " 1658 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1659 return PERMISSION_DENIED; 1660 } 1661 break; 1662 } 1663 } 1664 1665 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1666 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1667 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1668 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1669 IPCThreadState* ipc = IPCThreadState::self(); 1670 const int pid = ipc->getCallingPid(); 1671 const int uid = ipc->getCallingUid(); 1672 LOGE("Permission Denial: " 1673 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1674 return PERMISSION_DENIED; 1675 } 1676 int n; 1677 switch (code) { 1678 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1679 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1680 return NO_ERROR; 1681 case 1002: // SHOW_UPDATES 1682 n = data.readInt32(); 1683 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1684 invalidateHwcGeometry(); 1685 repaintEverything(); 1686 return NO_ERROR; 1687 case 1003: // SHOW_BACKGROUND 1688 n = data.readInt32(); 1689 mDebugBackground = n ? 1 : 0; 1690 return NO_ERROR; 1691 case 1004:{ // repaint everything 1692 repaintEverything(); 1693 return NO_ERROR; 1694 } 1695 case 1005:{ // force transaction 1696 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1697 return NO_ERROR; 1698 } 1699 case 1006:{ // enable/disable GraphicLog 1700 int enabled = data.readInt32(); 1701 GraphicLog::getInstance().setEnabled(enabled); 1702 return NO_ERROR; 1703 } 1704 case 1008: // toggle use of hw composer 1705 n = data.readInt32(); 1706 mDebugDisableHWC = n ? 1 : 0; 1707 invalidateHwcGeometry(); 1708 repaintEverything(); 1709 return NO_ERROR; 1710 case 1009: // toggle use of transform hint 1711 n = data.readInt32(); 1712 mDebugDisableTransformHint = n ? 1 : 0; 1713 invalidateHwcGeometry(); 1714 repaintEverything(); 1715 return NO_ERROR; 1716 case 1010: // interrogate. 1717 reply->writeInt32(0); 1718 reply->writeInt32(0); 1719 reply->writeInt32(mDebugRegion); 1720 reply->writeInt32(mDebugBackground); 1721 return NO_ERROR; 1722 case 1013: { 1723 Mutex::Autolock _l(mStateLock); 1724 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1725 reply->writeInt32(hw.getPageFlipCount()); 1726 } 1727 return NO_ERROR; 1728 } 1729 } 1730 return err; 1731 } 1732 1733 void SurfaceFlinger::repaintEverything() { 1734 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1735 const Rect bounds(hw.getBounds()); 1736 setInvalidateRegion(Region(bounds)); 1737 signalEvent(); 1738 } 1739 1740 void SurfaceFlinger::setInvalidateRegion(const Region& reg) { 1741 Mutex::Autolock _l(mInvalidateLock); 1742 mInvalidateRegion = reg; 1743 } 1744 1745 Region SurfaceFlinger::getAndClearInvalidateRegion() { 1746 Mutex::Autolock _l(mInvalidateLock); 1747 Region reg(mInvalidateRegion); 1748 mInvalidateRegion.clear(); 1749 return reg; 1750 } 1751 1752 // --------------------------------------------------------------------------- 1753 1754 status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy, 1755 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1756 { 1757 Mutex::Autolock _l(mStateLock); 1758 return renderScreenToTextureLocked(dpy, textureName, uOut, vOut); 1759 } 1760 1761 status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1762 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1763 { 1764 if (!GLExtensions::getInstance().haveFramebufferObject()) 1765 return INVALID_OPERATION; 1766 1767 // get screen geometry 1768 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1769 const uint32_t hw_w = hw.getWidth(); 1770 const uint32_t hw_h = hw.getHeight(); 1771 GLfloat u = 1; 1772 GLfloat v = 1; 1773 1774 // make sure to clear all GL error flags 1775 while ( glGetError() != GL_NO_ERROR ) ; 1776 1777 // create a FBO 1778 GLuint name, tname; 1779 glGenTextures(1, &tname); 1780 glBindTexture(GL_TEXTURE_2D, tname); 1781 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1782 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1783 if (glGetError() != GL_NO_ERROR) { 1784 while ( glGetError() != GL_NO_ERROR ) ; 1785 GLint tw = (2 << (31 - clz(hw_w))); 1786 GLint th = (2 << (31 - clz(hw_h))); 1787 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1788 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1789 u = GLfloat(hw_w) / tw; 1790 v = GLfloat(hw_h) / th; 1791 } 1792 glGenFramebuffersOES(1, &name); 1793 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1794 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1795 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1796 1797 // redraw the screen entirely... 1798 glDisable(GL_TEXTURE_EXTERNAL_OES); 1799 glDisable(GL_TEXTURE_2D); 1800 glDisable(GL_SCISSOR_TEST); 1801 glClearColor(0,0,0,1); 1802 glClear(GL_COLOR_BUFFER_BIT); 1803 glEnable(GL_SCISSOR_TEST); 1804 glMatrixMode(GL_MODELVIEW); 1805 glLoadIdentity(); 1806 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1807 const size_t count = layers.size(); 1808 for (size_t i=0 ; i<count ; ++i) { 1809 const sp<LayerBase>& layer(layers[i]); 1810 layer->drawForSreenShot(); 1811 } 1812 1813 hw.compositionComplete(); 1814 1815 // back to main framebuffer 1816 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1817 glDisable(GL_SCISSOR_TEST); 1818 glDeleteFramebuffersOES(1, &name); 1819 1820 *textureName = tname; 1821 *uOut = u; 1822 *vOut = v; 1823 return NO_ERROR; 1824 } 1825 1826 // --------------------------------------------------------------------------- 1827 1828 status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1829 { 1830 // get screen geometry 1831 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1832 const uint32_t hw_w = hw.getWidth(); 1833 const uint32_t hw_h = hw.getHeight(); 1834 const Region screenBounds(hw.getBounds()); 1835 1836 GLfloat u, v; 1837 GLuint tname; 1838 status_t result = renderScreenToTextureLocked(0, &tname, &u, &v); 1839 if (result != NO_ERROR) { 1840 return result; 1841 } 1842 1843 GLfloat vtx[8]; 1844 const GLfloat texCoords[4][2] = { {0,0}, {0,v}, {u,v}, {u,0} }; 1845 glBindTexture(GL_TEXTURE_2D, tname); 1846 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1847 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1848 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1849 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1850 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1851 glVertexPointer(2, GL_FLOAT, 0, vtx); 1852 1853 /* 1854 * Texture coordinate mapping 1855 * 1856 * u 1857 * 1 +----------+---+ 1858 * | | | | image is inverted 1859 * | V | | w.r.t. the texture 1860 * 1-v +----------+ | coordinates 1861 * | | 1862 * | | 1863 * | | 1864 * 0 +--------------+ 1865 * 0 1 1866 * 1867 */ 1868 1869 class s_curve_interpolator { 1870 const float nbFrames, s, v; 1871 public: 1872 s_curve_interpolator(int nbFrames, float s) 1873 : nbFrames(1.0f / (nbFrames-1)), s(s), 1874 v(1.0f + expf(-s + 0.5f*s)) { 1875 } 1876 float operator()(int f) { 1877 const float x = f * nbFrames; 1878 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1879 } 1880 }; 1881 1882 class v_stretch { 1883 const GLfloat hw_w, hw_h; 1884 public: 1885 v_stretch(uint32_t hw_w, uint32_t hw_h) 1886 : hw_w(hw_w), hw_h(hw_h) { 1887 } 1888 void operator()(GLfloat* vtx, float v) { 1889 const GLfloat w = hw_w + (hw_w * v); 1890 const GLfloat h = hw_h - (hw_h * v); 1891 const GLfloat x = (hw_w - w) * 0.5f; 1892 const GLfloat y = (hw_h - h) * 0.5f; 1893 vtx[0] = x; vtx[1] = y; 1894 vtx[2] = x; vtx[3] = y + h; 1895 vtx[4] = x + w; vtx[5] = y + h; 1896 vtx[6] = x + w; vtx[7] = y; 1897 } 1898 }; 1899 1900 class h_stretch { 1901 const GLfloat hw_w, hw_h; 1902 public: 1903 h_stretch(uint32_t hw_w, uint32_t hw_h) 1904 : hw_w(hw_w), hw_h(hw_h) { 1905 } 1906 void operator()(GLfloat* vtx, float v) { 1907 const GLfloat w = hw_w - (hw_w * v); 1908 const GLfloat h = 1.0f; 1909 const GLfloat x = (hw_w - w) * 0.5f; 1910 const GLfloat y = (hw_h - h) * 0.5f; 1911 vtx[0] = x; vtx[1] = y; 1912 vtx[2] = x; vtx[3] = y + h; 1913 vtx[4] = x + w; vtx[5] = y + h; 1914 vtx[6] = x + w; vtx[7] = y; 1915 } 1916 }; 1917 1918 // the full animation is 24 frames 1919 char value[PROPERTY_VALUE_MAX]; 1920 property_get("debug.sf.electron_frames", value, "24"); 1921 int nbFrames = (atoi(value) + 1) >> 1; 1922 if (nbFrames <= 0) // just in case 1923 nbFrames = 24; 1924 1925 s_curve_interpolator itr(nbFrames, 7.5f); 1926 s_curve_interpolator itg(nbFrames, 8.0f); 1927 s_curve_interpolator itb(nbFrames, 8.5f); 1928 1929 v_stretch vverts(hw_w, hw_h); 1930 1931 glMatrixMode(GL_TEXTURE); 1932 glLoadIdentity(); 1933 glMatrixMode(GL_MODELVIEW); 1934 glLoadIdentity(); 1935 1936 glEnable(GL_BLEND); 1937 glBlendFunc(GL_ONE, GL_ONE); 1938 for (int i=0 ; i<nbFrames ; i++) { 1939 float x, y, w, h; 1940 const float vr = itr(i); 1941 const float vg = itg(i); 1942 const float vb = itb(i); 1943 1944 // clear screen 1945 glColorMask(1,1,1,1); 1946 glClear(GL_COLOR_BUFFER_BIT); 1947 glEnable(GL_TEXTURE_2D); 1948 1949 // draw the red plane 1950 vverts(vtx, vr); 1951 glColorMask(1,0,0,1); 1952 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1953 1954 // draw the green plane 1955 vverts(vtx, vg); 1956 glColorMask(0,1,0,1); 1957 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1958 1959 // draw the blue plane 1960 vverts(vtx, vb); 1961 glColorMask(0,0,1,1); 1962 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1963 1964 // draw the white highlight (we use the last vertices) 1965 glDisable(GL_TEXTURE_2D); 1966 glColorMask(1,1,1,1); 1967 glColor4f(vg, vg, vg, 1); 1968 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1969 hw.flip(screenBounds); 1970 } 1971 1972 h_stretch hverts(hw_w, hw_h); 1973 glDisable(GL_BLEND); 1974 glDisable(GL_TEXTURE_2D); 1975 glColorMask(1,1,1,1); 1976 for (int i=0 ; i<nbFrames ; i++) { 1977 const float v = itg(i); 1978 hverts(vtx, v); 1979 glClear(GL_COLOR_BUFFER_BIT); 1980 glColor4f(1-v, 1-v, 1-v, 1); 1981 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1982 hw.flip(screenBounds); 1983 } 1984 1985 glColorMask(1,1,1,1); 1986 glEnable(GL_SCISSOR_TEST); 1987 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1988 glDeleteTextures(1, &tname); 1989 glDisable(GL_TEXTURE_2D); 1990 glDisable(GL_BLEND); 1991 return NO_ERROR; 1992 } 1993 1994 status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 1995 { 1996 status_t result = PERMISSION_DENIED; 1997 1998 if (!GLExtensions::getInstance().haveFramebufferObject()) 1999 return INVALID_OPERATION; 2000 2001 2002 // get screen geometry 2003 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2004 const uint32_t hw_w = hw.getWidth(); 2005 const uint32_t hw_h = hw.getHeight(); 2006 const Region screenBounds(hw.bounds()); 2007 2008 GLfloat u, v; 2009 GLuint tname; 2010 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2011 if (result != NO_ERROR) { 2012 return result; 2013 } 2014 2015 GLfloat vtx[8]; 2016 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2017 glBindTexture(GL_TEXTURE_2D, tname); 2018 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2019 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2020 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2021 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2022 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2023 glVertexPointer(2, GL_FLOAT, 0, vtx); 2024 2025 class s_curve_interpolator { 2026 const float nbFrames, s, v; 2027 public: 2028 s_curve_interpolator(int nbFrames, float s) 2029 : nbFrames(1.0f / (nbFrames-1)), s(s), 2030 v(1.0f + expf(-s + 0.5f*s)) { 2031 } 2032 float operator()(int f) { 2033 const float x = f * nbFrames; 2034 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2035 } 2036 }; 2037 2038 class v_stretch { 2039 const GLfloat hw_w, hw_h; 2040 public: 2041 v_stretch(uint32_t hw_w, uint32_t hw_h) 2042 : hw_w(hw_w), hw_h(hw_h) { 2043 } 2044 void operator()(GLfloat* vtx, float v) { 2045 const GLfloat w = hw_w + (hw_w * v); 2046 const GLfloat h = hw_h - (hw_h * v); 2047 const GLfloat x = (hw_w - w) * 0.5f; 2048 const GLfloat y = (hw_h - h) * 0.5f; 2049 vtx[0] = x; vtx[1] = y; 2050 vtx[2] = x; vtx[3] = y + h; 2051 vtx[4] = x + w; vtx[5] = y + h; 2052 vtx[6] = x + w; vtx[7] = y; 2053 } 2054 }; 2055 2056 class h_stretch { 2057 const GLfloat hw_w, hw_h; 2058 public: 2059 h_stretch(uint32_t hw_w, uint32_t hw_h) 2060 : hw_w(hw_w), hw_h(hw_h) { 2061 } 2062 void operator()(GLfloat* vtx, float v) { 2063 const GLfloat w = hw_w - (hw_w * v); 2064 const GLfloat h = 1.0f; 2065 const GLfloat x = (hw_w - w) * 0.5f; 2066 const GLfloat y = (hw_h - h) * 0.5f; 2067 vtx[0] = x; vtx[1] = y; 2068 vtx[2] = x; vtx[3] = y + h; 2069 vtx[4] = x + w; vtx[5] = y + h; 2070 vtx[6] = x + w; vtx[7] = y; 2071 } 2072 }; 2073 2074 // the full animation is 12 frames 2075 int nbFrames = 8; 2076 s_curve_interpolator itr(nbFrames, 7.5f); 2077 s_curve_interpolator itg(nbFrames, 8.0f); 2078 s_curve_interpolator itb(nbFrames, 8.5f); 2079 2080 h_stretch hverts(hw_w, hw_h); 2081 glDisable(GL_BLEND); 2082 glDisable(GL_TEXTURE_2D); 2083 glColorMask(1,1,1,1); 2084 for (int i=nbFrames-1 ; i>=0 ; i--) { 2085 const float v = itg(i); 2086 hverts(vtx, v); 2087 glClear(GL_COLOR_BUFFER_BIT); 2088 glColor4f(1-v, 1-v, 1-v, 1); 2089 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2090 hw.flip(screenBounds); 2091 } 2092 2093 nbFrames = 4; 2094 v_stretch vverts(hw_w, hw_h); 2095 glEnable(GL_BLEND); 2096 glBlendFunc(GL_ONE, GL_ONE); 2097 for (int i=nbFrames-1 ; i>=0 ; i--) { 2098 float x, y, w, h; 2099 const float vr = itr(i); 2100 const float vg = itg(i); 2101 const float vb = itb(i); 2102 2103 // clear screen 2104 glColorMask(1,1,1,1); 2105 glClear(GL_COLOR_BUFFER_BIT); 2106 glEnable(GL_TEXTURE_2D); 2107 2108 // draw the red plane 2109 vverts(vtx, vr); 2110 glColorMask(1,0,0,1); 2111 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2112 2113 // draw the green plane 2114 vverts(vtx, vg); 2115 glColorMask(0,1,0,1); 2116 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2117 2118 // draw the blue plane 2119 vverts(vtx, vb); 2120 glColorMask(0,0,1,1); 2121 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2122 2123 hw.flip(screenBounds); 2124 } 2125 2126 glColorMask(1,1,1,1); 2127 glEnable(GL_SCISSOR_TEST); 2128 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2129 glDeleteTextures(1, &tname); 2130 glDisable(GL_TEXTURE_2D); 2131 glDisable(GL_BLEND); 2132 2133 return NO_ERROR; 2134 } 2135 2136 // --------------------------------------------------------------------------- 2137 2138 status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2139 { 2140 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2141 if (!hw.canDraw()) { 2142 // we're already off 2143 return NO_ERROR; 2144 } 2145 2146 // turn off hwc while we're doing the animation 2147 hw.getHwComposer().disable(); 2148 // and make sure to turn it back on (if needed) next time we compose 2149 invalidateHwcGeometry(); 2150 2151 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2152 electronBeamOffAnimationImplLocked(); 2153 } 2154 2155 // always clear the whole screen at the end of the animation 2156 glClearColor(0,0,0,1); 2157 glDisable(GL_SCISSOR_TEST); 2158 glClear(GL_COLOR_BUFFER_BIT); 2159 glEnable(GL_SCISSOR_TEST); 2160 hw.flip( Region(hw.bounds()) ); 2161 2162 return NO_ERROR; 2163 } 2164 2165 status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2166 { 2167 class MessageTurnElectronBeamOff : public MessageBase { 2168 SurfaceFlinger* flinger; 2169 int32_t mode; 2170 status_t result; 2171 public: 2172 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2173 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2174 } 2175 status_t getResult() const { 2176 return result; 2177 } 2178 virtual bool handler() { 2179 Mutex::Autolock _l(flinger->mStateLock); 2180 result = flinger->turnElectronBeamOffImplLocked(mode); 2181 return true; 2182 } 2183 }; 2184 2185 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2186 status_t res = postMessageSync(msg); 2187 if (res == NO_ERROR) { 2188 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2189 2190 // work-around: when the power-manager calls us we activate the 2191 // animation. eventually, the "on" animation will be called 2192 // by the power-manager itself 2193 mElectronBeamAnimationMode = mode; 2194 } 2195 return res; 2196 } 2197 2198 // --------------------------------------------------------------------------- 2199 2200 status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2201 { 2202 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2203 if (hw.canDraw()) { 2204 // we're already on 2205 return NO_ERROR; 2206 } 2207 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2208 electronBeamOnAnimationImplLocked(); 2209 } 2210 2211 // make sure to redraw the whole screen when the animation is done 2212 mDirtyRegion.set(hw.bounds()); 2213 signalEvent(); 2214 2215 return NO_ERROR; 2216 } 2217 2218 status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2219 { 2220 class MessageTurnElectronBeamOn : public MessageBase { 2221 SurfaceFlinger* flinger; 2222 int32_t mode; 2223 status_t result; 2224 public: 2225 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2226 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2227 } 2228 status_t getResult() const { 2229 return result; 2230 } 2231 virtual bool handler() { 2232 Mutex::Autolock _l(flinger->mStateLock); 2233 result = flinger->turnElectronBeamOnImplLocked(mode); 2234 return true; 2235 } 2236 }; 2237 2238 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2239 return NO_ERROR; 2240 } 2241 2242 // --------------------------------------------------------------------------- 2243 2244 status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2245 sp<IMemoryHeap>* heap, 2246 uint32_t* w, uint32_t* h, PixelFormat* f, 2247 uint32_t sw, uint32_t sh, 2248 uint32_t minLayerZ, uint32_t maxLayerZ) 2249 { 2250 status_t result = PERMISSION_DENIED; 2251 2252 // only one display supported for now 2253 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2254 return BAD_VALUE; 2255 2256 if (!GLExtensions::getInstance().haveFramebufferObject()) 2257 return INVALID_OPERATION; 2258 2259 // get screen geometry 2260 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2261 const uint32_t hw_w = hw.getWidth(); 2262 const uint32_t hw_h = hw.getHeight(); 2263 2264 if ((sw > hw_w) || (sh > hw_h)) 2265 return BAD_VALUE; 2266 2267 sw = (!sw) ? hw_w : sw; 2268 sh = (!sh) ? hw_h : sh; 2269 const size_t size = sw * sh * 4; 2270 2271 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2272 // sw, sh, minLayerZ, maxLayerZ); 2273 2274 // make sure to clear all GL error flags 2275 while ( glGetError() != GL_NO_ERROR ) ; 2276 2277 // create a FBO 2278 GLuint name, tname; 2279 glGenRenderbuffersOES(1, &tname); 2280 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2281 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2282 glGenFramebuffersOES(1, &name); 2283 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2284 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2285 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2286 2287 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2288 2289 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2290 2291 // invert everything, b/c glReadPixel() below will invert the FB 2292 glViewport(0, 0, sw, sh); 2293 glScissor(0, 0, sw, sh); 2294 glEnable(GL_SCISSOR_TEST); 2295 glMatrixMode(GL_PROJECTION); 2296 glPushMatrix(); 2297 glLoadIdentity(); 2298 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2299 glMatrixMode(GL_MODELVIEW); 2300 2301 // redraw the screen entirely... 2302 glClearColor(0,0,0,1); 2303 glClear(GL_COLOR_BUFFER_BIT); 2304 2305 const LayerVector& layers(mDrawingState.layersSortedByZ); 2306 const size_t count = layers.size(); 2307 for (size_t i=0 ; i<count ; ++i) { 2308 const sp<LayerBase>& layer(layers[i]); 2309 const uint32_t flags = layer->drawingState().flags; 2310 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2311 const uint32_t z = layer->drawingState().z; 2312 if (z >= minLayerZ && z <= maxLayerZ) { 2313 layer->drawForSreenShot(); 2314 } 2315 } 2316 } 2317 2318 // XXX: this is needed on tegra 2319 glEnable(GL_SCISSOR_TEST); 2320 glScissor(0, 0, sw, sh); 2321 2322 // check for errors and return screen capture 2323 if (glGetError() != GL_NO_ERROR) { 2324 // error while rendering 2325 result = INVALID_OPERATION; 2326 } else { 2327 // allocate shared memory large enough to hold the 2328 // screen capture 2329 sp<MemoryHeapBase> base( 2330 new MemoryHeapBase(size, 0, "screen-capture") ); 2331 void* const ptr = base->getBase(); 2332 if (ptr) { 2333 // capture the screen with glReadPixels() 2334 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2335 if (glGetError() == GL_NO_ERROR) { 2336 *heap = base; 2337 *w = sw; 2338 *h = sh; 2339 *f = PIXEL_FORMAT_RGBA_8888; 2340 result = NO_ERROR; 2341 } 2342 } else { 2343 result = NO_MEMORY; 2344 } 2345 } 2346 glEnable(GL_SCISSOR_TEST); 2347 glViewport(0, 0, hw_w, hw_h); 2348 glMatrixMode(GL_PROJECTION); 2349 glPopMatrix(); 2350 glMatrixMode(GL_MODELVIEW); 2351 } else { 2352 result = BAD_VALUE; 2353 } 2354 2355 // release FBO resources 2356 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2357 glDeleteRenderbuffersOES(1, &tname); 2358 glDeleteFramebuffersOES(1, &name); 2359 2360 hw.compositionComplete(); 2361 2362 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2363 2364 return result; 2365 } 2366 2367 2368 status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2369 sp<IMemoryHeap>* heap, 2370 uint32_t* width, uint32_t* height, PixelFormat* format, 2371 uint32_t sw, uint32_t sh, 2372 uint32_t minLayerZ, uint32_t maxLayerZ) 2373 { 2374 // only one display supported for now 2375 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2376 return BAD_VALUE; 2377 2378 if (!GLExtensions::getInstance().haveFramebufferObject()) 2379 return INVALID_OPERATION; 2380 2381 class MessageCaptureScreen : public MessageBase { 2382 SurfaceFlinger* flinger; 2383 DisplayID dpy; 2384 sp<IMemoryHeap>* heap; 2385 uint32_t* w; 2386 uint32_t* h; 2387 PixelFormat* f; 2388 uint32_t sw; 2389 uint32_t sh; 2390 uint32_t minLayerZ; 2391 uint32_t maxLayerZ; 2392 status_t result; 2393 public: 2394 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2395 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2396 uint32_t sw, uint32_t sh, 2397 uint32_t minLayerZ, uint32_t maxLayerZ) 2398 : flinger(flinger), dpy(dpy), 2399 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2400 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2401 result(PERMISSION_DENIED) 2402 { 2403 } 2404 status_t getResult() const { 2405 return result; 2406 } 2407 virtual bool handler() { 2408 Mutex::Autolock _l(flinger->mStateLock); 2409 2410 // if we have secure windows, never allow the screen capture 2411 if (flinger->mSecureFrameBuffer) 2412 return true; 2413 2414 result = flinger->captureScreenImplLocked(dpy, 2415 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2416 2417 return true; 2418 } 2419 }; 2420 2421 sp<MessageBase> msg = new MessageCaptureScreen(this, 2422 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2423 status_t res = postMessageSync(msg); 2424 if (res == NO_ERROR) { 2425 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2426 } 2427 return res; 2428 } 2429 2430 // --------------------------------------------------------------------------- 2431 2432 sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2433 { 2434 sp<Layer> result; 2435 Mutex::Autolock _l(mStateLock); 2436 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2437 return result; 2438 } 2439 2440 // --------------------------------------------------------------------------- 2441 2442 Client::Client(const sp<SurfaceFlinger>& flinger) 2443 : mFlinger(flinger), mNameGenerator(1) 2444 { 2445 } 2446 2447 Client::~Client() 2448 { 2449 const size_t count = mLayers.size(); 2450 for (size_t i=0 ; i<count ; i++) { 2451 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2452 if (layer != 0) { 2453 mFlinger->removeLayer(layer); 2454 } 2455 } 2456 } 2457 2458 status_t Client::initCheck() const { 2459 return NO_ERROR; 2460 } 2461 2462 size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2463 { 2464 Mutex::Autolock _l(mLock); 2465 size_t name = mNameGenerator++; 2466 mLayers.add(name, layer); 2467 return name; 2468 } 2469 2470 void Client::detachLayer(const LayerBaseClient* layer) 2471 { 2472 Mutex::Autolock _l(mLock); 2473 // we do a linear search here, because this doesn't happen often 2474 const size_t count = mLayers.size(); 2475 for (size_t i=0 ; i<count ; i++) { 2476 if (mLayers.valueAt(i) == layer) { 2477 mLayers.removeItemsAt(i, 1); 2478 break; 2479 } 2480 } 2481 } 2482 sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2483 { 2484 Mutex::Autolock _l(mLock); 2485 sp<LayerBaseClient> lbc; 2486 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2487 if (layer != 0) { 2488 lbc = layer.promote(); 2489 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2490 } 2491 return lbc; 2492 } 2493 2494 2495 status_t Client::onTransact( 2496 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2497 { 2498 // these must be checked 2499 IPCThreadState* ipc = IPCThreadState::self(); 2500 const int pid = ipc->getCallingPid(); 2501 const int uid = ipc->getCallingUid(); 2502 const int self_pid = getpid(); 2503 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2504 // we're called from a different process, do the real check 2505 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2506 { 2507 LOGE("Permission Denial: " 2508 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2509 return PERMISSION_DENIED; 2510 } 2511 } 2512 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2513 } 2514 2515 2516 sp<ISurface> Client::createSurface( 2517 ISurfaceComposerClient::surface_data_t* params, 2518 const String8& name, 2519 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2520 uint32_t flags) 2521 { 2522 /* 2523 * createSurface must be called from the GL thread so that it can 2524 * have access to the GL context. 2525 */ 2526 2527 class MessageCreateSurface : public MessageBase { 2528 sp<ISurface> result; 2529 SurfaceFlinger* flinger; 2530 ISurfaceComposerClient::surface_data_t* params; 2531 Client* client; 2532 const String8& name; 2533 DisplayID display; 2534 uint32_t w, h; 2535 PixelFormat format; 2536 uint32_t flags; 2537 public: 2538 MessageCreateSurface(SurfaceFlinger* flinger, 2539 ISurfaceComposerClient::surface_data_t* params, 2540 const String8& name, Client* client, 2541 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2542 uint32_t flags) 2543 : flinger(flinger), params(params), client(client), name(name), 2544 display(display), w(w), h(h), format(format), flags(flags) 2545 { 2546 } 2547 sp<ISurface> getResult() const { return result; } 2548 virtual bool handler() { 2549 result = flinger->createSurface(params, name, client, 2550 display, w, h, format, flags); 2551 return true; 2552 } 2553 }; 2554 2555 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2556 params, name, this, display, w, h, format, flags); 2557 mFlinger->postMessageSync(msg); 2558 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2559 } 2560 status_t Client::destroySurface(SurfaceID sid) { 2561 return mFlinger->removeSurface(this, sid); 2562 } 2563 2564 // --------------------------------------------------------------------------- 2565 2566 GraphicBufferAlloc::GraphicBufferAlloc() {} 2567 2568 GraphicBufferAlloc::~GraphicBufferAlloc() {} 2569 2570 sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2571 PixelFormat format, uint32_t usage, status_t* error) { 2572 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2573 status_t err = graphicBuffer->initCheck(); 2574 *error = err; 2575 if (err != 0 || graphicBuffer->handle == 0) { 2576 if (err == NO_MEMORY) { 2577 GraphicBuffer::dumpAllocationsToSystemLog(); 2578 } 2579 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2580 "failed (%s), handle=%p", 2581 w, h, strerror(-err), graphicBuffer->handle); 2582 return 0; 2583 } 2584 return graphicBuffer; 2585 } 2586 2587 // --------------------------------------------------------------------------- 2588 2589 GraphicPlane::GraphicPlane() 2590 : mHw(0) 2591 { 2592 } 2593 2594 GraphicPlane::~GraphicPlane() { 2595 delete mHw; 2596 } 2597 2598 bool GraphicPlane::initialized() const { 2599 return mHw ? true : false; 2600 } 2601 2602 int GraphicPlane::getWidth() const { 2603 return mWidth; 2604 } 2605 2606 int GraphicPlane::getHeight() const { 2607 return mHeight; 2608 } 2609 2610 void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2611 { 2612 mHw = hw; 2613 2614 // initialize the display orientation transform. 2615 // it's a constant that should come from the display driver. 2616 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2617 char property[PROPERTY_VALUE_MAX]; 2618 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2619 //displayOrientation 2620 switch (atoi(property)) { 2621 case 90: 2622 displayOrientation = ISurfaceComposer::eOrientation90; 2623 break; 2624 case 270: 2625 displayOrientation = ISurfaceComposer::eOrientation270; 2626 break; 2627 } 2628 } 2629 2630 const float w = hw->getWidth(); 2631 const float h = hw->getHeight(); 2632 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2633 &mDisplayTransform); 2634 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2635 mDisplayWidth = h; 2636 mDisplayHeight = w; 2637 } else { 2638 mDisplayWidth = w; 2639 mDisplayHeight = h; 2640 } 2641 2642 setOrientation(ISurfaceComposer::eOrientationDefault); 2643 } 2644 2645 status_t GraphicPlane::orientationToTransfrom( 2646 int orientation, int w, int h, Transform* tr) 2647 { 2648 uint32_t flags = 0; 2649 switch (orientation) { 2650 case ISurfaceComposer::eOrientationDefault: 2651 flags = Transform::ROT_0; 2652 break; 2653 case ISurfaceComposer::eOrientation90: 2654 flags = Transform::ROT_90; 2655 break; 2656 case ISurfaceComposer::eOrientation180: 2657 flags = Transform::ROT_180; 2658 break; 2659 case ISurfaceComposer::eOrientation270: 2660 flags = Transform::ROT_270; 2661 break; 2662 default: 2663 return BAD_VALUE; 2664 } 2665 tr->set(flags, w, h); 2666 return NO_ERROR; 2667 } 2668 2669 status_t GraphicPlane::setOrientation(int orientation) 2670 { 2671 // If the rotation can be handled in hardware, this is where 2672 // the magic should happen. 2673 2674 const DisplayHardware& hw(displayHardware()); 2675 const float w = mDisplayWidth; 2676 const float h = mDisplayHeight; 2677 mWidth = int(w); 2678 mHeight = int(h); 2679 2680 Transform orientationTransform; 2681 GraphicPlane::orientationToTransfrom(orientation, w, h, 2682 &orientationTransform); 2683 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2684 mWidth = int(h); 2685 mHeight = int(w); 2686 } 2687 2688 mOrientation = orientation; 2689 mGlobalTransform = mDisplayTransform * orientationTransform; 2690 return NO_ERROR; 2691 } 2692 2693 const DisplayHardware& GraphicPlane::displayHardware() const { 2694 return *mHw; 2695 } 2696 2697 DisplayHardware& GraphicPlane::editDisplayHardware() { 2698 return *mHw; 2699 } 2700 2701 const Transform& GraphicPlane::transform() const { 2702 return mGlobalTransform; 2703 } 2704 2705 EGLDisplay GraphicPlane::getEGLDisplay() const { 2706 return mHw->getEGLDisplay(); 2707 } 2708 2709 // --------------------------------------------------------------------------- 2710 2711 }; // namespace android 2712
