SurfaceFlinger.cpp revision 9575f60722f7a4f54384fe0be6938a8de48dc23a
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdlib.h> 18#include <stdio.h> 19#include <stdint.h> 20#include <unistd.h> 21#include <fcntl.h> 22#include <errno.h> 23#include <math.h> 24#include <limits.h> 25#include <sys/types.h> 26#include <sys/stat.h> 27#include <sys/ioctl.h> 28 29#include <cutils/log.h> 30#include <cutils/properties.h> 31 32#include <binder/IPCThreadState.h> 33#include <binder/IServiceManager.h> 34#include <binder/MemoryHeapBase.h> 35#include <binder/PermissionCache.h> 36 37#include <utils/String8.h> 38#include <utils/String16.h> 39#include <utils/StopWatch.h> 40 41#include <ui/GraphicBufferAllocator.h> 42#include <ui/GraphicLog.h> 43#include <ui/PixelFormat.h> 44 45#include <pixelflinger/pixelflinger.h> 46#include <GLES/gl.h> 47 48#include "clz.h" 49#include "GLExtensions.h" 50#include "DdmConnection.h" 51#include "Layer.h" 52#include "LayerDim.h" 53#include "SurfaceFlinger.h" 54 55#include "DisplayHardware/DisplayHardware.h" 56#include "DisplayHardware/HWComposer.h" 57 58#include <private/surfaceflinger/SharedBufferStack.h> 59 60/* ideally AID_GRAPHICS would be in a semi-public header 61 * or there would be a way to map a user/group name to its id 62 */ 63#ifndef AID_GRAPHICS 64#define AID_GRAPHICS 1003 65#endif 66 67#define DISPLAY_COUNT 1 68 69namespace android { 70// --------------------------------------------------------------------------- 71 72const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 73const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 74const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 75const String16 sDump("android.permission.DUMP"); 76 77// --------------------------------------------------------------------------- 78 79SurfaceFlinger::SurfaceFlinger() 80 : BnSurfaceComposer(), Thread(false), 81 mTransactionFlags(0), 82 mResizeTransationPending(false), 83 mLayersRemoved(false), 84 mBootTime(systemTime()), 85 mVisibleRegionsDirty(false), 86 mHwWorkListDirty(false), 87 mDeferReleaseConsole(false), 88 mFreezeDisplay(false), 89 mElectronBeamAnimationMode(0), 90 mFreezeCount(0), 91 mFreezeDisplayTime(0), 92 mDebugRegion(0), 93 mDebugBackground(0), 94 mDebugDDMS(0), 95 mDebugDisableHWC(0), 96 mDebugDisableTransformHint(0), 97 mDebugInSwapBuffers(0), 98 mLastSwapBufferTime(0), 99 mDebugInTransaction(0), 100 mLastTransactionTime(0), 101 mBootFinished(false), 102 mConsoleSignals(0), 103 mSecureFrameBuffer(0) 104{ 105 init(); 106} 107 108void SurfaceFlinger::init() 109{ 110 LOGI("SurfaceFlinger is starting"); 111 112 // debugging stuff... 113 char value[PROPERTY_VALUE_MAX]; 114 115 property_get("debug.sf.showupdates", value, "0"); 116 mDebugRegion = atoi(value); 117 118 property_get("debug.sf.showbackground", value, "0"); 119 mDebugBackground = atoi(value); 120 121 property_get("debug.sf.ddms", value, "0"); 122 mDebugDDMS = atoi(value); 123 if (mDebugDDMS) { 124 DdmConnection::start(getServiceName()); 125 } 126 127 LOGI_IF(mDebugRegion, "showupdates enabled"); 128 LOGI_IF(mDebugBackground, "showbackground enabled"); 129 LOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 130} 131 132SurfaceFlinger::~SurfaceFlinger() 133{ 134 glDeleteTextures(1, &mWormholeTexName); 135} 136 137sp<IMemoryHeap> SurfaceFlinger::getCblk() const 138{ 139 return mServerHeap; 140} 141 142sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 143{ 144 sp<ISurfaceComposerClient> bclient; 145 sp<Client> client(new Client(this)); 146 status_t err = client->initCheck(); 147 if (err == NO_ERROR) { 148 bclient = client; 149 } 150 return bclient; 151} 152 153sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 154{ 155 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 156 return gba; 157} 158 159const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const 160{ 161 LOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy); 162 const GraphicPlane& plane(mGraphicPlanes[dpy]); 163 return plane; 164} 165 166GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) 167{ 168 return const_cast<GraphicPlane&>( 169 const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy)); 170} 171 172void SurfaceFlinger::bootFinished() 173{ 174 const nsecs_t now = systemTime(); 175 const nsecs_t duration = now - mBootTime; 176 LOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 177 mBootFinished = true; 178 179 // wait patiently for the window manager death 180 const String16 name("window"); 181 sp<IBinder> window(defaultServiceManager()->getService(name)); 182 if (window != 0) { 183 window->linkToDeath(this); 184 } 185 186 // stop boot animation 187 property_set("ctl.stop", "bootanim"); 188} 189 190void SurfaceFlinger::binderDied(const wp<IBinder>& who) 191{ 192 // the window manager died on us. prepare its eulogy. 193 194 // unfreeze the screen in case it was... frozen 195 mFreezeDisplayTime = 0; 196 mFreezeCount = 0; 197 mFreezeDisplay = false; 198 199 // reset screen orientation 200 setOrientation(0, eOrientationDefault, 0); 201 202 // restart the boot-animation 203 property_set("ctl.start", "bootanim"); 204} 205 206void SurfaceFlinger::onFirstRef() 207{ 208 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 209 210 // Wait for the main thread to be done with its initialization 211 mReadyToRunBarrier.wait(); 212} 213 214static inline uint16_t pack565(int r, int g, int b) { 215 return (r<<11)|(g<<5)|b; 216} 217 218status_t SurfaceFlinger::readyToRun() 219{ 220 LOGI( "SurfaceFlinger's main thread ready to run. " 221 "Initializing graphics H/W..."); 222 223 // we only support one display currently 224 int dpy = 0; 225 226 { 227 // initialize the main display 228 GraphicPlane& plane(graphicPlane(dpy)); 229 DisplayHardware* const hw = new DisplayHardware(this, dpy); 230 plane.setDisplayHardware(hw); 231 } 232 233 // create the shared control-block 234 mServerHeap = new MemoryHeapBase(4096, 235 MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap"); 236 LOGE_IF(mServerHeap==0, "can't create shared memory dealer"); 237 238 mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase()); 239 LOGE_IF(mServerCblk==0, "can't get to shared control block's address"); 240 241 new(mServerCblk) surface_flinger_cblk_t; 242 243 // initialize primary screen 244 // (other display should be initialized in the same manner, but 245 // asynchronously, as they could come and go. None of this is supported 246 // yet). 247 const GraphicPlane& plane(graphicPlane(dpy)); 248 const DisplayHardware& hw = plane.displayHardware(); 249 const uint32_t w = hw.getWidth(); 250 const uint32_t h = hw.getHeight(); 251 const uint32_t f = hw.getFormat(); 252 hw.makeCurrent(); 253 254 // initialize the shared control block 255 mServerCblk->connected |= 1<<dpy; 256 display_cblk_t* dcblk = mServerCblk->displays + dpy; 257 memset(dcblk, 0, sizeof(display_cblk_t)); 258 dcblk->w = plane.getWidth(); 259 dcblk->h = plane.getHeight(); 260 dcblk->format = f; 261 dcblk->orientation = ISurfaceComposer::eOrientationDefault; 262 dcblk->xdpi = hw.getDpiX(); 263 dcblk->ydpi = hw.getDpiY(); 264 dcblk->fps = hw.getRefreshRate(); 265 dcblk->density = hw.getDensity(); 266 267 // Initialize OpenGL|ES 268 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 269 glPixelStorei(GL_PACK_ALIGNMENT, 4); 270 glEnableClientState(GL_VERTEX_ARRAY); 271 glEnable(GL_SCISSOR_TEST); 272 glShadeModel(GL_FLAT); 273 glDisable(GL_DITHER); 274 glDisable(GL_CULL_FACE); 275 276 const uint16_t g0 = pack565(0x0F,0x1F,0x0F); 277 const uint16_t g1 = pack565(0x17,0x2f,0x17); 278 const uint16_t 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 (UNLIKELY(mHwWorkListDirty)) { 450 // build the h/w work list 451 handleWorkList(); 452 } 453 454 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 455 if (LIKELY(hw.canDraw() && !isFrozen())) { 456 // repaint the framebuffer (if needed) 457 458 const int index = hw.getCurrentBufferIndex(); 459 GraphicLog& logger(GraphicLog::getInstance()); 460 461 logger.log(GraphicLog::SF_REPAINT, index); 462 handleRepaint(); 463 464 // inform the h/w that we're done compositing 465 logger.log(GraphicLog::SF_COMPOSITION_COMPLETE, index); 466 hw.compositionComplete(); 467 468 logger.log(GraphicLog::SF_SWAP_BUFFERS, index); 469 postFramebuffer(); 470 471 logger.log(GraphicLog::SF_REPAINT_DONE, index); 472 } else { 473 // pretend we did the post 474 hw.compositionComplete(); 475 usleep(16667); // 60 fps period 476 } 477 return true; 478} 479 480void SurfaceFlinger::postFramebuffer() 481{ 482 if (!mSwapRegion.isEmpty()) { 483 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 484 const nsecs_t now = systemTime(); 485 mDebugInSwapBuffers = now; 486 hw.flip(mSwapRegion); 487 mLastSwapBufferTime = systemTime() - now; 488 mDebugInSwapBuffers = 0; 489 mSwapRegion.clear(); 490 } 491} 492 493void SurfaceFlinger::handleConsoleEvents() 494{ 495 // something to do with the console 496 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 497 498 int what = android_atomic_and(0, &mConsoleSignals); 499 if (what & eConsoleAcquired) { 500 hw.acquireScreen(); 501 // this is a temporary work-around, eventually this should be called 502 // by the power-manager 503 SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode); 504 } 505 506 if (mDeferReleaseConsole && hw.isScreenAcquired()) { 507 // We got the release signal before the acquire signal 508 mDeferReleaseConsole = false; 509 hw.releaseScreen(); 510 } 511 512 if (what & eConsoleReleased) { 513 if (hw.isScreenAcquired()) { 514 hw.releaseScreen(); 515 } else { 516 mDeferReleaseConsole = true; 517 } 518 } 519 520 mDirtyRegion.set(hw.bounds()); 521} 522 523void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 524{ 525 Mutex::Autolock _l(mStateLock); 526 const nsecs_t now = systemTime(); 527 mDebugInTransaction = now; 528 529 // Here we're guaranteed that some transaction flags are set 530 // so we can call handleTransactionLocked() unconditionally. 531 // We call getTransactionFlags(), which will also clear the flags, 532 // with mStateLock held to guarantee that mCurrentState won't change 533 // until the transaction is committed. 534 535 const uint32_t mask = eTransactionNeeded | eTraversalNeeded; 536 transactionFlags = getTransactionFlags(mask); 537 handleTransactionLocked(transactionFlags); 538 539 mLastTransactionTime = systemTime() - now; 540 mDebugInTransaction = 0; 541 invalidateHwcGeometry(); 542 // here the transaction has been committed 543} 544 545void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 546{ 547 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 548 const size_t count = currentLayers.size(); 549 550 /* 551 * Traversal of the children 552 * (perform the transaction for each of them if needed) 553 */ 554 555 const bool layersNeedTransaction = transactionFlags & eTraversalNeeded; 556 if (layersNeedTransaction) { 557 for (size_t i=0 ; i<count ; i++) { 558 const sp<LayerBase>& layer = currentLayers[i]; 559 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 560 if (!trFlags) continue; 561 562 const uint32_t flags = layer->doTransaction(0); 563 if (flags & Layer::eVisibleRegion) 564 mVisibleRegionsDirty = true; 565 } 566 } 567 568 /* 569 * Perform our own transaction if needed 570 */ 571 572 if (transactionFlags & eTransactionNeeded) { 573 if (mCurrentState.orientation != mDrawingState.orientation) { 574 // the orientation has changed, recompute all visible regions 575 // and invalidate everything. 576 577 const int dpy = 0; 578 const int orientation = mCurrentState.orientation; 579 // Currently unused: const uint32_t flags = mCurrentState.orientationFlags; 580 GraphicPlane& plane(graphicPlane(dpy)); 581 plane.setOrientation(orientation); 582 583 // update the shared control block 584 const DisplayHardware& hw(plane.displayHardware()); 585 volatile display_cblk_t* dcblk = mServerCblk->displays + dpy; 586 dcblk->orientation = orientation; 587 dcblk->w = plane.getWidth(); 588 dcblk->h = plane.getHeight(); 589 590 mVisibleRegionsDirty = true; 591 mDirtyRegion.set(hw.bounds()); 592 } 593 594 if (mCurrentState.freezeDisplay != mDrawingState.freezeDisplay) { 595 // freezing or unfreezing the display -> trigger animation if needed 596 mFreezeDisplay = mCurrentState.freezeDisplay; 597 if (mFreezeDisplay) 598 mFreezeDisplayTime = 0; 599 } 600 601 if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) { 602 // layers have been added 603 mVisibleRegionsDirty = true; 604 } 605 606 // some layers might have been removed, so 607 // we need to update the regions they're exposing. 608 if (mLayersRemoved) { 609 mLayersRemoved = false; 610 mVisibleRegionsDirty = true; 611 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 612 const size_t count = previousLayers.size(); 613 for (size_t i=0 ; i<count ; i++) { 614 const sp<LayerBase>& layer(previousLayers[i]); 615 if (currentLayers.indexOf( layer ) < 0) { 616 // this layer is not visible anymore 617 mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen); 618 } 619 } 620 } 621 } 622 623 commitTransaction(); 624} 625 626sp<FreezeLock> SurfaceFlinger::getFreezeLock() const 627{ 628 return new FreezeLock(const_cast<SurfaceFlinger *>(this)); 629} 630 631void SurfaceFlinger::computeVisibleRegions( 632 const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion) 633{ 634 const GraphicPlane& plane(graphicPlane(0)); 635 const Transform& planeTransform(plane.transform()); 636 const DisplayHardware& hw(plane.displayHardware()); 637 const Region screenRegion(hw.bounds()); 638 639 Region aboveOpaqueLayers; 640 Region aboveCoveredLayers; 641 Region dirty; 642 643 bool secureFrameBuffer = false; 644 645 size_t i = currentLayers.size(); 646 while (i--) { 647 const sp<LayerBase>& layer = currentLayers[i]; 648 layer->validateVisibility(planeTransform); 649 650 // start with the whole surface at its current location 651 const Layer::State& s(layer->drawingState()); 652 653 /* 654 * opaqueRegion: area of a surface that is fully opaque. 655 */ 656 Region opaqueRegion; 657 658 /* 659 * visibleRegion: area of a surface that is visible on screen 660 * and not fully transparent. This is essentially the layer's 661 * footprint minus the opaque regions above it. 662 * Areas covered by a translucent surface are considered visible. 663 */ 664 Region visibleRegion; 665 666 /* 667 * coveredRegion: area of a surface that is covered by all 668 * visible regions above it (which includes the translucent areas). 669 */ 670 Region coveredRegion; 671 672 673 // handle hidden surfaces by setting the visible region to empty 674 if (LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) { 675 const bool translucent = !layer->isOpaque(); 676 const Rect bounds(layer->visibleBounds()); 677 visibleRegion.set(bounds); 678 visibleRegion.andSelf(screenRegion); 679 if (!visibleRegion.isEmpty()) { 680 // Remove the transparent area from the visible region 681 if (translucent) { 682 visibleRegion.subtractSelf(layer->transparentRegionScreen); 683 } 684 685 // compute the opaque region 686 const int32_t layerOrientation = layer->getOrientation(); 687 if (s.alpha==255 && !translucent && 688 ((layerOrientation & Transform::ROT_INVALID) == false)) { 689 // the opaque region is the layer's footprint 690 opaqueRegion = visibleRegion; 691 } 692 } 693 } 694 695 // Clip the covered region to the visible region 696 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 697 698 // Update aboveCoveredLayers for next (lower) layer 699 aboveCoveredLayers.orSelf(visibleRegion); 700 701 // subtract the opaque region covered by the layers above us 702 visibleRegion.subtractSelf(aboveOpaqueLayers); 703 704 // compute this layer's dirty region 705 if (layer->contentDirty) { 706 // we need to invalidate the whole region 707 dirty = visibleRegion; 708 // as well, as the old visible region 709 dirty.orSelf(layer->visibleRegionScreen); 710 layer->contentDirty = false; 711 } else { 712 /* compute the exposed region: 713 * the exposed region consists of two components: 714 * 1) what's VISIBLE now and was COVERED before 715 * 2) what's EXPOSED now less what was EXPOSED before 716 * 717 * note that (1) is conservative, we start with the whole 718 * visible region but only keep what used to be covered by 719 * something -- which mean it may have been exposed. 720 * 721 * (2) handles areas that were not covered by anything but got 722 * exposed because of a resize. 723 */ 724 const Region newExposed = visibleRegion - coveredRegion; 725 const Region oldVisibleRegion = layer->visibleRegionScreen; 726 const Region oldCoveredRegion = layer->coveredRegionScreen; 727 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 728 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 729 } 730 dirty.subtractSelf(aboveOpaqueLayers); 731 732 // accumulate to the screen dirty region 733 dirtyRegion.orSelf(dirty); 734 735 // Update aboveOpaqueLayers for next (lower) layer 736 aboveOpaqueLayers.orSelf(opaqueRegion); 737 738 // Store the visible region is screen space 739 layer->setVisibleRegion(visibleRegion); 740 layer->setCoveredRegion(coveredRegion); 741 742 // If a secure layer is partially visible, lock-down the screen! 743 if (layer->isSecure() && !visibleRegion.isEmpty()) { 744 secureFrameBuffer = true; 745 } 746 } 747 748 // invalidate the areas where a layer was removed 749 dirtyRegion.orSelf(mDirtyRegionRemovedLayer); 750 mDirtyRegionRemovedLayer.clear(); 751 752 mSecureFrameBuffer = secureFrameBuffer; 753 opaqueRegion = aboveOpaqueLayers; 754} 755 756 757void SurfaceFlinger::commitTransaction() 758{ 759 mDrawingState = mCurrentState; 760 mResizeTransationPending = false; 761 mTransactionCV.broadcast(); 762} 763 764void SurfaceFlinger::handlePageFlip() 765{ 766 bool visibleRegions = mVisibleRegionsDirty; 767 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 768 visibleRegions |= lockPageFlip(currentLayers); 769 770 const DisplayHardware& hw = graphicPlane(0).displayHardware(); 771 const Region screenRegion(hw.bounds()); 772 if (visibleRegions) { 773 Region opaqueRegion; 774 computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion); 775 776 /* 777 * rebuild the visible layer list 778 */ 779 const size_t count = currentLayers.size(); 780 mVisibleLayersSortedByZ.clear(); 781 mVisibleLayersSortedByZ.setCapacity(count); 782 for (size_t i=0 ; i<count ; i++) { 783 if (!currentLayers[i]->visibleRegionScreen.isEmpty()) 784 mVisibleLayersSortedByZ.add(currentLayers[i]); 785 } 786 787 mWormholeRegion = screenRegion.subtract(opaqueRegion); 788 mVisibleRegionsDirty = false; 789 invalidateHwcGeometry(); 790 } 791 792 unlockPageFlip(currentLayers); 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 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_BLEND); 1044 glDisable(GL_DITHER); 1045 glDisable(GL_SCISSOR_TEST); 1046 1047 static int toggle = 0; 1048 toggle = 1 - toggle; 1049 if (toggle) { 1050 glColor4f(1, 0, 1, 1); 1051 } else { 1052 glColor4f(1, 1, 0, 1); 1053 } 1054 1055 Region::const_iterator it = mDirtyRegion.begin(); 1056 Region::const_iterator const end = mDirtyRegion.end(); 1057 while (it != end) { 1058 const Rect& r = *it++; 1059 GLfloat vertices[][2] = { 1060 { r.left, height - r.top }, 1061 { r.left, height - r.bottom }, 1062 { r.right, height - r.bottom }, 1063 { r.right, height - r.top } 1064 }; 1065 glVertexPointer(2, GL_FLOAT, 0, vertices); 1066 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1067 } 1068 1069 hw.flip(mSwapRegion); 1070 1071 if (mDebugRegion > 1) 1072 usleep(mDebugRegion * 1000); 1073 1074 glEnable(GL_SCISSOR_TEST); 1075} 1076 1077void SurfaceFlinger::drawWormhole() const 1078{ 1079 const Region region(mWormholeRegion.intersect(mDirtyRegion)); 1080 if (region.isEmpty()) 1081 return; 1082 1083 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1084 const int32_t width = hw.getWidth(); 1085 const int32_t height = hw.getHeight(); 1086 1087 glDisable(GL_BLEND); 1088 glDisable(GL_DITHER); 1089 1090 if (LIKELY(!mDebugBackground)) { 1091 glClearColor(0,0,0,0); 1092 Region::const_iterator it = region.begin(); 1093 Region::const_iterator const end = region.end(); 1094 while (it != end) { 1095 const Rect& r = *it++; 1096 const GLint sy = height - (r.top + r.height()); 1097 glScissor(r.left, sy, r.width(), r.height()); 1098 glClear(GL_COLOR_BUFFER_BIT); 1099 } 1100 } else { 1101 const GLshort vertices[][2] = { { 0, 0 }, { width, 0 }, 1102 { width, height }, { 0, height } }; 1103 const GLshort tcoords[][2] = { { 0, 0 }, { 1, 0 }, { 1, 1 }, { 0, 1 } }; 1104 glVertexPointer(2, GL_SHORT, 0, vertices); 1105 glTexCoordPointer(2, GL_SHORT, 0, tcoords); 1106 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1107#if defined(GL_OES_EGL_image_external) 1108 if (GLExtensions::getInstance().haveTextureExternal()) { 1109 glDisable(GL_TEXTURE_EXTERNAL_OES); 1110 } 1111#endif 1112 glEnable(GL_TEXTURE_2D); 1113 glBindTexture(GL_TEXTURE_2D, mWormholeTexName); 1114 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1115 glMatrixMode(GL_TEXTURE); 1116 glLoadIdentity(); 1117 glScalef(width*(1.0f/32.0f), height*(1.0f/32.0f), 1); 1118 Region::const_iterator it = region.begin(); 1119 Region::const_iterator const end = region.end(); 1120 while (it != end) { 1121 const Rect& r = *it++; 1122 const GLint sy = height - (r.top + r.height()); 1123 glScissor(r.left, sy, r.width(), r.height()); 1124 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1125 } 1126 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1127 glDisable(GL_TEXTURE_2D); 1128 glLoadIdentity(); 1129 glMatrixMode(GL_MODELVIEW); 1130 } 1131} 1132 1133void SurfaceFlinger::debugShowFPS() const 1134{ 1135 static int mFrameCount; 1136 static int mLastFrameCount = 0; 1137 static nsecs_t mLastFpsTime = 0; 1138 static float mFps = 0; 1139 mFrameCount++; 1140 nsecs_t now = systemTime(); 1141 nsecs_t diff = now - mLastFpsTime; 1142 if (diff > ms2ns(250)) { 1143 mFps = ((mFrameCount - mLastFrameCount) * float(s2ns(1))) / diff; 1144 mLastFpsTime = now; 1145 mLastFrameCount = mFrameCount; 1146 } 1147 // XXX: mFPS has the value we want 1148 } 1149 1150status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer) 1151{ 1152 Mutex::Autolock _l(mStateLock); 1153 addLayer_l(layer); 1154 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1155 return NO_ERROR; 1156} 1157 1158status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer) 1159{ 1160 ssize_t i = mCurrentState.layersSortedByZ.add(layer); 1161 return (i < 0) ? status_t(i) : status_t(NO_ERROR); 1162} 1163 1164ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1165 const sp<LayerBaseClient>& lbc) 1166{ 1167 // attach this layer to the client 1168 size_t name = client->attachLayer(lbc); 1169 1170 Mutex::Autolock _l(mStateLock); 1171 1172 // add this layer to the current state list 1173 addLayer_l(lbc); 1174 1175 return ssize_t(name); 1176} 1177 1178status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1179{ 1180 Mutex::Autolock _l(mStateLock); 1181 status_t err = purgatorizeLayer_l(layer); 1182 if (err == NO_ERROR) 1183 setTransactionFlags(eTransactionNeeded); 1184 return err; 1185} 1186 1187status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1188{ 1189 sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient()); 1190 if (lbc != 0) { 1191 mLayerMap.removeItem( lbc->getSurfaceBinder() ); 1192 } 1193 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1194 if (index >= 0) { 1195 mLayersRemoved = true; 1196 return NO_ERROR; 1197 } 1198 return status_t(index); 1199} 1200 1201status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1202{ 1203 // First add the layer to the purgatory list, which makes sure it won't 1204 // go away, then remove it from the main list (through a transaction). 1205 ssize_t err = removeLayer_l(layerBase); 1206 if (err >= 0) { 1207 mLayerPurgatory.add(layerBase); 1208 } 1209 1210 layerBase->onRemoved(); 1211 1212 // it's possible that we don't find a layer, because it might 1213 // have been destroyed already -- this is not technically an error 1214 // from the user because there is a race between Client::destroySurface(), 1215 // ~Client() and ~ISurface(). 1216 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1217} 1218 1219status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer) 1220{ 1221 layer->forceVisibilityTransaction(); 1222 setTransactionFlags(eTraversalNeeded); 1223 return NO_ERROR; 1224} 1225 1226uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1227{ 1228 return android_atomic_release_load(&mTransactionFlags); 1229} 1230 1231uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1232{ 1233 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1234} 1235 1236uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1237{ 1238 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1239 if ((old & flags)==0) { // wake the server up 1240 signalEvent(); 1241 } 1242 return old; 1243} 1244 1245 1246void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state) { 1247 Mutex::Autolock _l(mStateLock); 1248 1249 uint32_t flags = 0; 1250 const size_t count = state.size(); 1251 for (size_t i=0 ; i<count ; i++) { 1252 const ComposerState& s(state[i]); 1253 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1254 flags |= setClientStateLocked(client, s.state); 1255 } 1256 if (flags) { 1257 setTransactionFlags(flags); 1258 } 1259 1260 signalEvent(); 1261 1262 // if there is a transaction with a resize, wait for it to 1263 // take effect before returning. 1264 while (mResizeTransationPending) { 1265 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1266 if (CC_UNLIKELY(err != NO_ERROR)) { 1267 // just in case something goes wrong in SF, return to the 1268 // called after a few seconds. 1269 LOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1270 mResizeTransationPending = false; 1271 break; 1272 } 1273 } 1274} 1275 1276status_t SurfaceFlinger::freezeDisplay(DisplayID dpy, uint32_t flags) 1277{ 1278 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1279 return BAD_VALUE; 1280 1281 Mutex::Autolock _l(mStateLock); 1282 mCurrentState.freezeDisplay = 1; 1283 setTransactionFlags(eTransactionNeeded); 1284 1285 // flags is intended to communicate some sort of animation behavior 1286 // (for instance fading) 1287 return NO_ERROR; 1288} 1289 1290status_t SurfaceFlinger::unfreezeDisplay(DisplayID dpy, uint32_t flags) 1291{ 1292 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1293 return BAD_VALUE; 1294 1295 Mutex::Autolock _l(mStateLock); 1296 mCurrentState.freezeDisplay = 0; 1297 setTransactionFlags(eTransactionNeeded); 1298 1299 // flags is intended to communicate some sort of animation behavior 1300 // (for instance fading) 1301 return NO_ERROR; 1302} 1303 1304int SurfaceFlinger::setOrientation(DisplayID dpy, 1305 int orientation, uint32_t flags) 1306{ 1307 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 1308 return BAD_VALUE; 1309 1310 Mutex::Autolock _l(mStateLock); 1311 if (mCurrentState.orientation != orientation) { 1312 if (uint32_t(orientation)<=eOrientation270 || orientation==42) { 1313 mCurrentState.orientationFlags = flags; 1314 mCurrentState.orientation = orientation; 1315 setTransactionFlags(eTransactionNeeded); 1316 mTransactionCV.wait(mStateLock); 1317 } else { 1318 orientation = BAD_VALUE; 1319 } 1320 } 1321 return orientation; 1322} 1323 1324sp<ISurface> SurfaceFlinger::createSurface( 1325 ISurfaceComposerClient::surface_data_t* params, 1326 const String8& name, 1327 const sp<Client>& client, 1328 DisplayID d, uint32_t w, uint32_t h, PixelFormat format, 1329 uint32_t flags) 1330{ 1331 sp<LayerBaseClient> layer; 1332 sp<ISurface> surfaceHandle; 1333 1334 if (int32_t(w|h) < 0) { 1335 LOGE("createSurface() failed, w or h is negative (w=%d, h=%d)", 1336 int(w), int(h)); 1337 return surfaceHandle; 1338 } 1339 1340 //LOGD("createSurface for pid %d (%d x %d)", pid, w, h); 1341 sp<Layer> normalLayer; 1342 switch (flags & eFXSurfaceMask) { 1343 case eFXSurfaceNormal: 1344 normalLayer = createNormalSurface(client, d, w, h, flags, format); 1345 layer = normalLayer; 1346 break; 1347 case eFXSurfaceBlur: 1348 // for now we treat Blur as Dim, until we can implement it 1349 // efficiently. 1350 case eFXSurfaceDim: 1351 layer = createDimSurface(client, d, w, h, flags); 1352 break; 1353 } 1354 1355 if (layer != 0) { 1356 layer->initStates(w, h, flags); 1357 layer->setName(name); 1358 ssize_t token = addClientLayer(client, layer); 1359 1360 surfaceHandle = layer->getSurface(); 1361 if (surfaceHandle != 0) { 1362 params->token = token; 1363 params->identity = layer->getIdentity(); 1364 if (normalLayer != 0) { 1365 Mutex::Autolock _l(mStateLock); 1366 mLayerMap.add(layer->getSurfaceBinder(), normalLayer); 1367 } 1368 } 1369 1370 setTransactionFlags(eTransactionNeeded); 1371 } 1372 1373 return surfaceHandle; 1374} 1375 1376sp<Layer> SurfaceFlinger::createNormalSurface( 1377 const sp<Client>& client, DisplayID display, 1378 uint32_t w, uint32_t h, uint32_t flags, 1379 PixelFormat& format) 1380{ 1381 // initialize the surfaces 1382 switch (format) { // TODO: take h/w into account 1383 case PIXEL_FORMAT_TRANSPARENT: 1384 case PIXEL_FORMAT_TRANSLUCENT: 1385 format = PIXEL_FORMAT_RGBA_8888; 1386 break; 1387 case PIXEL_FORMAT_OPAQUE: 1388#ifdef NO_RGBX_8888 1389 format = PIXEL_FORMAT_RGB_565; 1390#else 1391 format = PIXEL_FORMAT_RGBX_8888; 1392#endif 1393 break; 1394 } 1395 1396#ifdef NO_RGBX_8888 1397 if (format == PIXEL_FORMAT_RGBX_8888) 1398 format = PIXEL_FORMAT_RGBA_8888; 1399#endif 1400 1401 sp<Layer> layer = new Layer(this, display, client); 1402 status_t err = layer->setBuffers(w, h, format, flags); 1403 if (LIKELY(err != NO_ERROR)) { 1404 LOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err)); 1405 layer.clear(); 1406 } 1407 return layer; 1408} 1409 1410sp<LayerDim> SurfaceFlinger::createDimSurface( 1411 const sp<Client>& client, DisplayID display, 1412 uint32_t w, uint32_t h, uint32_t flags) 1413{ 1414 sp<LayerDim> layer = new LayerDim(this, display, client); 1415 layer->initStates(w, h, flags); 1416 return layer; 1417} 1418 1419status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid) 1420{ 1421 /* 1422 * called by the window manager, when a surface should be marked for 1423 * destruction. 1424 * 1425 * The surface is removed from the current and drawing lists, but placed 1426 * in the purgatory queue, so it's not destroyed right-away (we need 1427 * to wait for all client's references to go away first). 1428 */ 1429 1430 status_t err = NAME_NOT_FOUND; 1431 Mutex::Autolock _l(mStateLock); 1432 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1433 if (layer != 0) { 1434 err = purgatorizeLayer_l(layer); 1435 if (err == NO_ERROR) { 1436 setTransactionFlags(eTransactionNeeded); 1437 } 1438 } 1439 return err; 1440} 1441 1442status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer) 1443{ 1444 // called by ~ISurface() when all references are gone 1445 status_t err = NO_ERROR; 1446 sp<LayerBaseClient> l(layer.promote()); 1447 if (l != NULL) { 1448 Mutex::Autolock _l(mStateLock); 1449 err = removeLayer_l(l); 1450 if (err == NAME_NOT_FOUND) { 1451 // The surface wasn't in the current list, which means it was 1452 // removed already, which means it is in the purgatory, 1453 // and need to be removed from there. 1454 ssize_t idx = mLayerPurgatory.remove(l); 1455 LOGE_IF(idx < 0, 1456 "layer=%p is not in the purgatory list", l.get()); 1457 } 1458 LOGE_IF(err<0 && err != NAME_NOT_FOUND, 1459 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1460 } 1461 return err; 1462} 1463 1464uint32_t SurfaceFlinger::setClientStateLocked( 1465 const sp<Client>& client, 1466 const layer_state_t& s) 1467{ 1468 uint32_t flags = 0; 1469 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1470 if (layer != 0) { 1471 const uint32_t what = s.what; 1472 if (what & ePositionChanged) { 1473 if (layer->setPosition(s.x, s.y)) 1474 flags |= eTraversalNeeded; 1475 } 1476 if (what & eLayerChanged) { 1477 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1478 if (layer->setLayer(s.z)) { 1479 mCurrentState.layersSortedByZ.removeAt(idx); 1480 mCurrentState.layersSortedByZ.add(layer); 1481 // we need traversal (state changed) 1482 // AND transaction (list changed) 1483 flags |= eTransactionNeeded|eTraversalNeeded; 1484 } 1485 } 1486 if (what & eSizeChanged) { 1487 if (layer->setSize(s.w, s.h)) { 1488 flags |= eTraversalNeeded; 1489 mResizeTransationPending = true; 1490 } 1491 } 1492 if (what & eAlphaChanged) { 1493 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1494 flags |= eTraversalNeeded; 1495 } 1496 if (what & eMatrixChanged) { 1497 if (layer->setMatrix(s.matrix)) 1498 flags |= eTraversalNeeded; 1499 } 1500 if (what & eTransparentRegionChanged) { 1501 if (layer->setTransparentRegionHint(s.transparentRegion)) 1502 flags |= eTraversalNeeded; 1503 } 1504 if (what & eVisibilityChanged) { 1505 if (layer->setFlags(s.flags, s.mask)) 1506 flags |= eTraversalNeeded; 1507 } 1508 } 1509 return flags; 1510} 1511 1512void SurfaceFlinger::screenReleased(int dpy) 1513{ 1514 // this may be called by a signal handler, we can't do too much in here 1515 android_atomic_or(eConsoleReleased, &mConsoleSignals); 1516 signalEvent(); 1517} 1518 1519void SurfaceFlinger::screenAcquired(int dpy) 1520{ 1521 // this may be called by a signal handler, we can't do too much in here 1522 android_atomic_or(eConsoleAcquired, &mConsoleSignals); 1523 signalEvent(); 1524} 1525 1526status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 1527{ 1528 const size_t SIZE = 4096; 1529 char buffer[SIZE]; 1530 String8 result; 1531 1532 if (!PermissionCache::checkCallingPermission(sDump)) { 1533 snprintf(buffer, SIZE, "Permission Denial: " 1534 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 1535 IPCThreadState::self()->getCallingPid(), 1536 IPCThreadState::self()->getCallingUid()); 1537 result.append(buffer); 1538 } else { 1539 1540 // figure out if we're stuck somewhere 1541 const nsecs_t now = systemTime(); 1542 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 1543 const nsecs_t inTransaction(mDebugInTransaction); 1544 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 1545 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 1546 1547 // Try to get the main lock, but don't insist if we can't 1548 // (this would indicate SF is stuck, but we want to be able to 1549 // print something in dumpsys). 1550 int retry = 3; 1551 while (mStateLock.tryLock()<0 && --retry>=0) { 1552 usleep(1000000); 1553 } 1554 const bool locked(retry >= 0); 1555 if (!locked) { 1556 snprintf(buffer, SIZE, 1557 "SurfaceFlinger appears to be unresponsive, " 1558 "dumping anyways (no locks held)\n"); 1559 result.append(buffer); 1560 } 1561 1562 /* 1563 * Dump the visible layer list 1564 */ 1565 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 1566 const size_t count = currentLayers.size(); 1567 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 1568 result.append(buffer); 1569 for (size_t i=0 ; i<count ; i++) { 1570 const sp<LayerBase>& layer(currentLayers[i]); 1571 layer->dump(result, buffer, SIZE); 1572 const Layer::State& s(layer->drawingState()); 1573 s.transparentRegion.dump(result, "transparentRegion"); 1574 layer->transparentRegionScreen.dump(result, "transparentRegionScreen"); 1575 layer->visibleRegionScreen.dump(result, "visibleRegionScreen"); 1576 } 1577 1578 /* 1579 * Dump the layers in the purgatory 1580 */ 1581 1582 const size_t purgatorySize = mLayerPurgatory.size(); 1583 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 1584 result.append(buffer); 1585 for (size_t i=0 ; i<purgatorySize ; i++) { 1586 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 1587 layer->shortDump(result, buffer, SIZE); 1588 } 1589 1590 /* 1591 * Dump SurfaceFlinger global state 1592 */ 1593 1594 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 1595 result.append(buffer); 1596 1597 const GLExtensions& extensions(GLExtensions::getInstance()); 1598 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 1599 extensions.getVendor(), 1600 extensions.getRenderer(), 1601 extensions.getVersion()); 1602 result.append(buffer); 1603 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 1604 result.append(buffer); 1605 1606 mWormholeRegion.dump(result, "WormholeRegion"); 1607 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1608 snprintf(buffer, SIZE, 1609 " display frozen: %s, freezeCount=%d, orientation=%d, canDraw=%d\n", 1610 mFreezeDisplay?"yes":"no", mFreezeCount, 1611 mCurrentState.orientation, hw.canDraw()); 1612 result.append(buffer); 1613 snprintf(buffer, SIZE, 1614 " last eglSwapBuffers() time: %f us\n" 1615 " last transaction time : %f us\n", 1616 mLastSwapBufferTime/1000.0, mLastTransactionTime/1000.0); 1617 result.append(buffer); 1618 1619 if (inSwapBuffersDuration || !locked) { 1620 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 1621 inSwapBuffersDuration/1000.0); 1622 result.append(buffer); 1623 } 1624 1625 if (inTransactionDuration || !locked) { 1626 snprintf(buffer, SIZE, " transaction time: %f us\n", 1627 inTransactionDuration/1000.0); 1628 result.append(buffer); 1629 } 1630 1631 /* 1632 * Dump HWComposer state 1633 */ 1634 HWComposer& hwc(hw.getHwComposer()); 1635 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 1636 hwc.initCheck()==NO_ERROR ? "present" : "not present", 1637 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 1638 result.append(buffer); 1639 hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ); 1640 1641 /* 1642 * Dump gralloc state 1643 */ 1644 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 1645 alloc.dump(result); 1646 hw.dump(result); 1647 1648 if (locked) { 1649 mStateLock.unlock(); 1650 } 1651 } 1652 write(fd, result.string(), result.size()); 1653 return NO_ERROR; 1654} 1655 1656status_t SurfaceFlinger::onTransact( 1657 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 1658{ 1659 switch (code) { 1660 case CREATE_CONNECTION: 1661 case SET_TRANSACTION_STATE: 1662 case SET_ORIENTATION: 1663 case FREEZE_DISPLAY: 1664 case UNFREEZE_DISPLAY: 1665 case BOOT_FINISHED: 1666 case TURN_ELECTRON_BEAM_OFF: 1667 case TURN_ELECTRON_BEAM_ON: 1668 { 1669 // codes that require permission check 1670 IPCThreadState* ipc = IPCThreadState::self(); 1671 const int pid = ipc->getCallingPid(); 1672 const int uid = ipc->getCallingUid(); 1673 if ((uid != AID_GRAPHICS) && 1674 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 1675 LOGE("Permission Denial: " 1676 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1677 return PERMISSION_DENIED; 1678 } 1679 break; 1680 } 1681 case CAPTURE_SCREEN: 1682 { 1683 // codes that require permission check 1684 IPCThreadState* ipc = IPCThreadState::self(); 1685 const int pid = ipc->getCallingPid(); 1686 const int uid = ipc->getCallingUid(); 1687 if ((uid != AID_GRAPHICS) && 1688 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 1689 LOGE("Permission Denial: " 1690 "can't read framebuffer pid=%d, uid=%d", pid, uid); 1691 return PERMISSION_DENIED; 1692 } 1693 break; 1694 } 1695 } 1696 1697 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 1698 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 1699 CHECK_INTERFACE(ISurfaceComposer, data, reply); 1700 if (UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 1701 IPCThreadState* ipc = IPCThreadState::self(); 1702 const int pid = ipc->getCallingPid(); 1703 const int uid = ipc->getCallingUid(); 1704 LOGE("Permission Denial: " 1705 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 1706 return PERMISSION_DENIED; 1707 } 1708 int n; 1709 switch (code) { 1710 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 1711 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 1712 return NO_ERROR; 1713 case 1002: // SHOW_UPDATES 1714 n = data.readInt32(); 1715 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 1716 invalidateHwcGeometry(); 1717 repaintEverything(); 1718 return NO_ERROR; 1719 case 1003: // SHOW_BACKGROUND 1720 n = data.readInt32(); 1721 mDebugBackground = n ? 1 : 0; 1722 return NO_ERROR; 1723 case 1004:{ // repaint everything 1724 repaintEverything(); 1725 return NO_ERROR; 1726 } 1727 case 1005:{ // force transaction 1728 setTransactionFlags(eTransactionNeeded|eTraversalNeeded); 1729 return NO_ERROR; 1730 } 1731 case 1006:{ // enable/disable GraphicLog 1732 int enabled = data.readInt32(); 1733 GraphicLog::getInstance().setEnabled(enabled); 1734 return NO_ERROR; 1735 } 1736 case 1007: // set mFreezeCount 1737 mFreezeCount = data.readInt32(); 1738 mFreezeDisplayTime = 0; 1739 return NO_ERROR; 1740 case 1008: // toggle use of hw composer 1741 n = data.readInt32(); 1742 mDebugDisableHWC = n ? 1 : 0; 1743 invalidateHwcGeometry(); 1744 repaintEverything(); 1745 return NO_ERROR; 1746 case 1009: // toggle use of transform hint 1747 n = data.readInt32(); 1748 mDebugDisableTransformHint = n ? 1 : 0; 1749 invalidateHwcGeometry(); 1750 repaintEverything(); 1751 return NO_ERROR; 1752 case 1010: // interrogate. 1753 reply->writeInt32(0); 1754 reply->writeInt32(0); 1755 reply->writeInt32(mDebugRegion); 1756 reply->writeInt32(mDebugBackground); 1757 return NO_ERROR; 1758 case 1013: { 1759 Mutex::Autolock _l(mStateLock); 1760 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1761 reply->writeInt32(hw.getPageFlipCount()); 1762 } 1763 return NO_ERROR; 1764 } 1765 } 1766 return err; 1767} 1768 1769void SurfaceFlinger::repaintEverything() { 1770 Mutex::Autolock _l(mStateLock); 1771 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1772 mDirtyRegion.set(hw.bounds()); // careful that's not thread-safe 1773 signalEvent(); 1774} 1775 1776// --------------------------------------------------------------------------- 1777 1778status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy, 1779 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 1780{ 1781 if (!GLExtensions::getInstance().haveFramebufferObject()) 1782 return INVALID_OPERATION; 1783 1784 // get screen geometry 1785 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 1786 const uint32_t hw_w = hw.getWidth(); 1787 const uint32_t hw_h = hw.getHeight(); 1788 GLfloat u = 1; 1789 GLfloat v = 1; 1790 1791 // make sure to clear all GL error flags 1792 while ( glGetError() != GL_NO_ERROR ) ; 1793 1794 // create a FBO 1795 GLuint name, tname; 1796 glGenTextures(1, &tname); 1797 glBindTexture(GL_TEXTURE_2D, tname); 1798 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1799 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1800 if (glGetError() != GL_NO_ERROR) { 1801 while ( glGetError() != GL_NO_ERROR ) ; 1802 GLint tw = (2 << (31 - clz(hw_w))); 1803 GLint th = (2 << (31 - clz(hw_h))); 1804 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1805 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 1806 u = GLfloat(hw_w) / tw; 1807 v = GLfloat(hw_h) / th; 1808 } 1809 glGenFramebuffersOES(1, &name); 1810 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 1811 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 1812 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 1813 1814 // redraw the screen entirely... 1815 glClearColor(0,0,0,1); 1816 glClear(GL_COLOR_BUFFER_BIT); 1817 const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ); 1818 const size_t count = layers.size(); 1819 for (size_t i=0 ; i<count ; ++i) { 1820 const sp<LayerBase>& layer(layers[i]); 1821 layer->drawForSreenShot(); 1822 } 1823 1824 // back to main framebuffer 1825 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 1826 glDisable(GL_SCISSOR_TEST); 1827 glDeleteFramebuffersOES(1, &name); 1828 1829 *textureName = tname; 1830 *uOut = u; 1831 *vOut = v; 1832 return NO_ERROR; 1833} 1834 1835// --------------------------------------------------------------------------- 1836 1837status_t SurfaceFlinger::electronBeamOffAnimationImplLocked() 1838{ 1839 status_t result = PERMISSION_DENIED; 1840 1841 if (!GLExtensions::getInstance().haveFramebufferObject()) 1842 return INVALID_OPERATION; 1843 1844 // get screen geometry 1845 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 1846 const uint32_t hw_w = hw.getWidth(); 1847 const uint32_t hw_h = hw.getHeight(); 1848 const Region screenBounds(hw.bounds()); 1849 1850 GLfloat u, v; 1851 GLuint tname; 1852 result = renderScreenToTextureLocked(0, &tname, &u, &v); 1853 if (result != NO_ERROR) { 1854 return result; 1855 } 1856 1857 GLfloat vtx[8]; 1858 const GLfloat texCoords[4][2] = { {0,1}, {0,1-v}, {u,1-v}, {u,1} }; 1859 glBindTexture(GL_TEXTURE_2D, tname); 1860 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 1861 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 1862 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 1863 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 1864 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 1865 glVertexPointer(2, GL_FLOAT, 0, vtx); 1866 1867 /* 1868 * Texture coordinate mapping 1869 * 1870 * u 1871 * 1 +----------+---+ 1872 * | | | | image is inverted 1873 * | V | | w.r.t. the texture 1874 * 1-v +----------+ | coordinates 1875 * | | 1876 * | | 1877 * | | 1878 * 0 +--------------+ 1879 * 0 1 1880 * 1881 */ 1882 1883 class s_curve_interpolator { 1884 const float nbFrames, s, v; 1885 public: 1886 s_curve_interpolator(int nbFrames, float s) 1887 : nbFrames(1.0f / (nbFrames-1)), s(s), 1888 v(1.0f + expf(-s + 0.5f*s)) { 1889 } 1890 float operator()(int f) { 1891 const float x = f * nbFrames; 1892 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 1893 } 1894 }; 1895 1896 class v_stretch { 1897 const GLfloat hw_w, hw_h; 1898 public: 1899 v_stretch(uint32_t hw_w, uint32_t hw_h) 1900 : hw_w(hw_w), hw_h(hw_h) { 1901 } 1902 void operator()(GLfloat* vtx, float v) { 1903 const GLfloat w = hw_w + (hw_w * v); 1904 const GLfloat h = hw_h - (hw_h * v); 1905 const GLfloat x = (hw_w - w) * 0.5f; 1906 const GLfloat y = (hw_h - h) * 0.5f; 1907 vtx[0] = x; vtx[1] = y; 1908 vtx[2] = x; vtx[3] = y + h; 1909 vtx[4] = x + w; vtx[5] = y + h; 1910 vtx[6] = x + w; vtx[7] = y; 1911 } 1912 }; 1913 1914 class h_stretch { 1915 const GLfloat hw_w, hw_h; 1916 public: 1917 h_stretch(uint32_t hw_w, uint32_t hw_h) 1918 : hw_w(hw_w), hw_h(hw_h) { 1919 } 1920 void operator()(GLfloat* vtx, float v) { 1921 const GLfloat w = hw_w - (hw_w * v); 1922 const GLfloat h = 1.0f; 1923 const GLfloat x = (hw_w - w) * 0.5f; 1924 const GLfloat y = (hw_h - h) * 0.5f; 1925 vtx[0] = x; vtx[1] = y; 1926 vtx[2] = x; vtx[3] = y + h; 1927 vtx[4] = x + w; vtx[5] = y + h; 1928 vtx[6] = x + w; vtx[7] = y; 1929 } 1930 }; 1931 1932 // the full animation is 24 frames 1933 char value[PROPERTY_VALUE_MAX]; 1934 property_get("debug.sf.electron_frames", value, "24"); 1935 int nbFrames = (atoi(value) + 1) >> 1; 1936 if (nbFrames <= 0) // just in case 1937 nbFrames = 24; 1938 1939 s_curve_interpolator itr(nbFrames, 7.5f); 1940 s_curve_interpolator itg(nbFrames, 8.0f); 1941 s_curve_interpolator itb(nbFrames, 8.5f); 1942 1943 v_stretch vverts(hw_w, hw_h); 1944 glEnable(GL_BLEND); 1945 glBlendFunc(GL_ONE, GL_ONE); 1946 for (int i=0 ; i<nbFrames ; i++) { 1947 float x, y, w, h; 1948 const float vr = itr(i); 1949 const float vg = itg(i); 1950 const float vb = itb(i); 1951 1952 // clear screen 1953 glColorMask(1,1,1,1); 1954 glClear(GL_COLOR_BUFFER_BIT); 1955 glEnable(GL_TEXTURE_2D); 1956 1957 // draw the red plane 1958 vverts(vtx, vr); 1959 glColorMask(1,0,0,1); 1960 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1961 1962 // draw the green plane 1963 vverts(vtx, vg); 1964 glColorMask(0,1,0,1); 1965 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1966 1967 // draw the blue plane 1968 vverts(vtx, vb); 1969 glColorMask(0,0,1,1); 1970 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1971 1972 // draw the white highlight (we use the last vertices) 1973 glDisable(GL_TEXTURE_2D); 1974 glColorMask(1,1,1,1); 1975 glColor4f(vg, vg, vg, 1); 1976 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1977 hw.flip(screenBounds); 1978 } 1979 1980 h_stretch hverts(hw_w, hw_h); 1981 glDisable(GL_BLEND); 1982 glDisable(GL_TEXTURE_2D); 1983 glColorMask(1,1,1,1); 1984 for (int i=0 ; i<nbFrames ; i++) { 1985 const float v = itg(i); 1986 hverts(vtx, v); 1987 glClear(GL_COLOR_BUFFER_BIT); 1988 glColor4f(1-v, 1-v, 1-v, 1); 1989 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1990 hw.flip(screenBounds); 1991 } 1992 1993 glColorMask(1,1,1,1); 1994 glEnable(GL_SCISSOR_TEST); 1995 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 1996 glDeleteTextures(1, &tname); 1997 glDisable(GL_TEXTURE_2D); 1998 return NO_ERROR; 1999} 2000 2001status_t SurfaceFlinger::electronBeamOnAnimationImplLocked() 2002{ 2003 status_t result = PERMISSION_DENIED; 2004 2005 if (!GLExtensions::getInstance().haveFramebufferObject()) 2006 return INVALID_OPERATION; 2007 2008 2009 // get screen geometry 2010 const DisplayHardware& hw(graphicPlane(0).displayHardware()); 2011 const uint32_t hw_w = hw.getWidth(); 2012 const uint32_t hw_h = hw.getHeight(); 2013 const Region screenBounds(hw.bounds()); 2014 2015 GLfloat u, v; 2016 GLuint tname; 2017 result = renderScreenToTextureLocked(0, &tname, &u, &v); 2018 if (result != NO_ERROR) { 2019 return result; 2020 } 2021 2022 // back to main framebuffer 2023 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2024 glDisable(GL_SCISSOR_TEST); 2025 2026 GLfloat vtx[8]; 2027 const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} }; 2028 glBindTexture(GL_TEXTURE_2D, tname); 2029 glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 2030 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2031 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2032 glTexCoordPointer(2, GL_FLOAT, 0, texCoords); 2033 glEnableClientState(GL_TEXTURE_COORD_ARRAY); 2034 glVertexPointer(2, GL_FLOAT, 0, vtx); 2035 2036 class s_curve_interpolator { 2037 const float nbFrames, s, v; 2038 public: 2039 s_curve_interpolator(int nbFrames, float s) 2040 : nbFrames(1.0f / (nbFrames-1)), s(s), 2041 v(1.0f + expf(-s + 0.5f*s)) { 2042 } 2043 float operator()(int f) { 2044 const float x = f * nbFrames; 2045 return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f; 2046 } 2047 }; 2048 2049 class v_stretch { 2050 const GLfloat hw_w, hw_h; 2051 public: 2052 v_stretch(uint32_t hw_w, uint32_t hw_h) 2053 : hw_w(hw_w), hw_h(hw_h) { 2054 } 2055 void operator()(GLfloat* vtx, float v) { 2056 const GLfloat w = hw_w + (hw_w * v); 2057 const GLfloat h = hw_h - (hw_h * v); 2058 const GLfloat x = (hw_w - w) * 0.5f; 2059 const GLfloat y = (hw_h - h) * 0.5f; 2060 vtx[0] = x; vtx[1] = y; 2061 vtx[2] = x; vtx[3] = y + h; 2062 vtx[4] = x + w; vtx[5] = y + h; 2063 vtx[6] = x + w; vtx[7] = y; 2064 } 2065 }; 2066 2067 class h_stretch { 2068 const GLfloat hw_w, hw_h; 2069 public: 2070 h_stretch(uint32_t hw_w, uint32_t hw_h) 2071 : hw_w(hw_w), hw_h(hw_h) { 2072 } 2073 void operator()(GLfloat* vtx, float v) { 2074 const GLfloat w = hw_w - (hw_w * v); 2075 const GLfloat h = 1.0f; 2076 const GLfloat x = (hw_w - w) * 0.5f; 2077 const GLfloat y = (hw_h - h) * 0.5f; 2078 vtx[0] = x; vtx[1] = y; 2079 vtx[2] = x; vtx[3] = y + h; 2080 vtx[4] = x + w; vtx[5] = y + h; 2081 vtx[6] = x + w; vtx[7] = y; 2082 } 2083 }; 2084 2085 // the full animation is 12 frames 2086 int nbFrames = 8; 2087 s_curve_interpolator itr(nbFrames, 7.5f); 2088 s_curve_interpolator itg(nbFrames, 8.0f); 2089 s_curve_interpolator itb(nbFrames, 8.5f); 2090 2091 h_stretch hverts(hw_w, hw_h); 2092 glDisable(GL_BLEND); 2093 glDisable(GL_TEXTURE_2D); 2094 glColorMask(1,1,1,1); 2095 for (int i=nbFrames-1 ; i>=0 ; i--) { 2096 const float v = itg(i); 2097 hverts(vtx, v); 2098 glClear(GL_COLOR_BUFFER_BIT); 2099 glColor4f(1-v, 1-v, 1-v, 1); 2100 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2101 hw.flip(screenBounds); 2102 } 2103 2104 nbFrames = 4; 2105 v_stretch vverts(hw_w, hw_h); 2106 glEnable(GL_BLEND); 2107 glBlendFunc(GL_ONE, GL_ONE); 2108 for (int i=nbFrames-1 ; i>=0 ; i--) { 2109 float x, y, w, h; 2110 const float vr = itr(i); 2111 const float vg = itg(i); 2112 const float vb = itb(i); 2113 2114 // clear screen 2115 glColorMask(1,1,1,1); 2116 glClear(GL_COLOR_BUFFER_BIT); 2117 glEnable(GL_TEXTURE_2D); 2118 2119 // draw the red plane 2120 vverts(vtx, vr); 2121 glColorMask(1,0,0,1); 2122 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2123 2124 // draw the green plane 2125 vverts(vtx, vg); 2126 glColorMask(0,1,0,1); 2127 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2128 2129 // draw the blue plane 2130 vverts(vtx, vb); 2131 glColorMask(0,0,1,1); 2132 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 2133 2134 hw.flip(screenBounds); 2135 } 2136 2137 glColorMask(1,1,1,1); 2138 glEnable(GL_SCISSOR_TEST); 2139 glDisableClientState(GL_TEXTURE_COORD_ARRAY); 2140 glDeleteTextures(1, &tname); 2141 glDisable(GL_TEXTURE_2D); 2142 2143 return NO_ERROR; 2144} 2145 2146// --------------------------------------------------------------------------- 2147 2148status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode) 2149{ 2150 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2151 if (!hw.canDraw()) { 2152 // we're already off 2153 return NO_ERROR; 2154 } 2155 2156 // turn off hwc while we're doing the animation 2157 hw.getHwComposer().disable(); 2158 // and make sure to turn it back on (if needed) next time we compose 2159 invalidateHwcGeometry(); 2160 2161 if (mode & ISurfaceComposer::eElectronBeamAnimationOff) { 2162 electronBeamOffAnimationImplLocked(); 2163 } 2164 2165 // always clear the whole screen at the end of the animation 2166 glClearColor(0,0,0,1); 2167 glDisable(GL_SCISSOR_TEST); 2168 glClear(GL_COLOR_BUFFER_BIT); 2169 glEnable(GL_SCISSOR_TEST); 2170 hw.flip( Region(hw.bounds()) ); 2171 2172 hw.setCanDraw(false); 2173 return NO_ERROR; 2174} 2175 2176status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode) 2177{ 2178 class MessageTurnElectronBeamOff : public MessageBase { 2179 SurfaceFlinger* flinger; 2180 int32_t mode; 2181 status_t result; 2182 public: 2183 MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode) 2184 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2185 } 2186 status_t getResult() const { 2187 return result; 2188 } 2189 virtual bool handler() { 2190 Mutex::Autolock _l(flinger->mStateLock); 2191 result = flinger->turnElectronBeamOffImplLocked(mode); 2192 return true; 2193 } 2194 }; 2195 2196 sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode); 2197 status_t res = postMessageSync(msg); 2198 if (res == NO_ERROR) { 2199 res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult(); 2200 2201 // work-around: when the power-manager calls us we activate the 2202 // animation. eventually, the "on" animation will be called 2203 // by the power-manager itself 2204 mElectronBeamAnimationMode = mode; 2205 } 2206 return res; 2207} 2208 2209// --------------------------------------------------------------------------- 2210 2211status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode) 2212{ 2213 DisplayHardware& hw(graphicPlane(0).editDisplayHardware()); 2214 if (hw.canDraw()) { 2215 // we're already on 2216 return NO_ERROR; 2217 } 2218 if (mode & ISurfaceComposer::eElectronBeamAnimationOn) { 2219 electronBeamOnAnimationImplLocked(); 2220 } 2221 hw.setCanDraw(true); 2222 2223 // make sure to redraw the whole screen when the animation is done 2224 mDirtyRegion.set(hw.bounds()); 2225 signalEvent(); 2226 2227 return NO_ERROR; 2228} 2229 2230status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode) 2231{ 2232 class MessageTurnElectronBeamOn : public MessageBase { 2233 SurfaceFlinger* flinger; 2234 int32_t mode; 2235 status_t result; 2236 public: 2237 MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode) 2238 : flinger(flinger), mode(mode), result(PERMISSION_DENIED) { 2239 } 2240 status_t getResult() const { 2241 return result; 2242 } 2243 virtual bool handler() { 2244 Mutex::Autolock _l(flinger->mStateLock); 2245 result = flinger->turnElectronBeamOnImplLocked(mode); 2246 return true; 2247 } 2248 }; 2249 2250 postMessageAsync( new MessageTurnElectronBeamOn(this, mode) ); 2251 return NO_ERROR; 2252} 2253 2254// --------------------------------------------------------------------------- 2255 2256status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy, 2257 sp<IMemoryHeap>* heap, 2258 uint32_t* w, uint32_t* h, PixelFormat* f, 2259 uint32_t sw, uint32_t sh, 2260 uint32_t minLayerZ, uint32_t maxLayerZ) 2261{ 2262 status_t result = PERMISSION_DENIED; 2263 2264 // only one display supported for now 2265 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2266 return BAD_VALUE; 2267 2268 if (!GLExtensions::getInstance().haveFramebufferObject()) 2269 return INVALID_OPERATION; 2270 2271 // get screen geometry 2272 const DisplayHardware& hw(graphicPlane(dpy).displayHardware()); 2273 const uint32_t hw_w = hw.getWidth(); 2274 const uint32_t hw_h = hw.getHeight(); 2275 2276 if ((sw > hw_w) || (sh > hw_h)) 2277 return BAD_VALUE; 2278 2279 sw = (!sw) ? hw_w : sw; 2280 sh = (!sh) ? hw_h : sh; 2281 const size_t size = sw * sh * 4; 2282 2283 //LOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2284 // sw, sh, minLayerZ, maxLayerZ); 2285 2286 // make sure to clear all GL error flags 2287 while ( glGetError() != GL_NO_ERROR ) ; 2288 2289 // create a FBO 2290 GLuint name, tname; 2291 glGenRenderbuffersOES(1, &tname); 2292 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2293 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2294 glGenFramebuffersOES(1, &name); 2295 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2296 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2297 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2298 2299 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2300 2301 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2302 2303 // invert everything, b/c glReadPixel() below will invert the FB 2304 glViewport(0, 0, sw, sh); 2305 glScissor(0, 0, sw, sh); 2306 glEnable(GL_SCISSOR_TEST); 2307 glMatrixMode(GL_PROJECTION); 2308 glPushMatrix(); 2309 glLoadIdentity(); 2310 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2311 glMatrixMode(GL_MODELVIEW); 2312 2313 // redraw the screen entirely... 2314 glClearColor(0,0,0,1); 2315 glClear(GL_COLOR_BUFFER_BIT); 2316 2317 const LayerVector& layers(mDrawingState.layersSortedByZ); 2318 const size_t count = layers.size(); 2319 for (size_t i=0 ; i<count ; ++i) { 2320 const sp<LayerBase>& layer(layers[i]); 2321 const uint32_t flags = layer->drawingState().flags; 2322 if (!(flags & ISurfaceComposer::eLayerHidden)) { 2323 const uint32_t z = layer->drawingState().z; 2324 if (z >= minLayerZ && z <= maxLayerZ) { 2325 layer->drawForSreenShot(); 2326 } 2327 } 2328 } 2329 2330 // XXX: this is needed on tegra 2331 glEnable(GL_SCISSOR_TEST); 2332 glScissor(0, 0, sw, sh); 2333 2334 // check for errors and return screen capture 2335 if (glGetError() != GL_NO_ERROR) { 2336 // error while rendering 2337 result = INVALID_OPERATION; 2338 } else { 2339 // allocate shared memory large enough to hold the 2340 // screen capture 2341 sp<MemoryHeapBase> base( 2342 new MemoryHeapBase(size, 0, "screen-capture") ); 2343 void* const ptr = base->getBase(); 2344 if (ptr) { 2345 // capture the screen with glReadPixels() 2346 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2347 if (glGetError() == GL_NO_ERROR) { 2348 *heap = base; 2349 *w = sw; 2350 *h = sh; 2351 *f = PIXEL_FORMAT_RGBA_8888; 2352 result = NO_ERROR; 2353 } 2354 } else { 2355 result = NO_MEMORY; 2356 } 2357 } 2358 glEnable(GL_SCISSOR_TEST); 2359 glViewport(0, 0, hw_w, hw_h); 2360 glMatrixMode(GL_PROJECTION); 2361 glPopMatrix(); 2362 glMatrixMode(GL_MODELVIEW); 2363 } else { 2364 result = BAD_VALUE; 2365 } 2366 2367 // release FBO resources 2368 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2369 glDeleteRenderbuffersOES(1, &tname); 2370 glDeleteFramebuffersOES(1, &name); 2371 2372 hw.compositionComplete(); 2373 2374 // LOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2375 2376 return result; 2377} 2378 2379 2380status_t SurfaceFlinger::captureScreen(DisplayID dpy, 2381 sp<IMemoryHeap>* heap, 2382 uint32_t* width, uint32_t* height, PixelFormat* format, 2383 uint32_t sw, uint32_t sh, 2384 uint32_t minLayerZ, uint32_t maxLayerZ) 2385{ 2386 // only one display supported for now 2387 if (UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT)) 2388 return BAD_VALUE; 2389 2390 if (!GLExtensions::getInstance().haveFramebufferObject()) 2391 return INVALID_OPERATION; 2392 2393 class MessageCaptureScreen : public MessageBase { 2394 SurfaceFlinger* flinger; 2395 DisplayID dpy; 2396 sp<IMemoryHeap>* heap; 2397 uint32_t* w; 2398 uint32_t* h; 2399 PixelFormat* f; 2400 uint32_t sw; 2401 uint32_t sh; 2402 uint32_t minLayerZ; 2403 uint32_t maxLayerZ; 2404 status_t result; 2405 public: 2406 MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy, 2407 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2408 uint32_t sw, uint32_t sh, 2409 uint32_t minLayerZ, uint32_t maxLayerZ) 2410 : flinger(flinger), dpy(dpy), 2411 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2412 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2413 result(PERMISSION_DENIED) 2414 { 2415 } 2416 status_t getResult() const { 2417 return result; 2418 } 2419 virtual bool handler() { 2420 Mutex::Autolock _l(flinger->mStateLock); 2421 2422 // if we have secure windows, never allow the screen capture 2423 if (flinger->mSecureFrameBuffer) 2424 return true; 2425 2426 result = flinger->captureScreenImplLocked(dpy, 2427 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2428 2429 return true; 2430 } 2431 }; 2432 2433 sp<MessageBase> msg = new MessageCaptureScreen(this, 2434 dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2435 status_t res = postMessageSync(msg); 2436 if (res == NO_ERROR) { 2437 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2438 } 2439 return res; 2440} 2441 2442// --------------------------------------------------------------------------- 2443 2444sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const 2445{ 2446 sp<Layer> result; 2447 Mutex::Autolock _l(mStateLock); 2448 result = mLayerMap.valueFor( sur->asBinder() ).promote(); 2449 return result; 2450} 2451 2452// --------------------------------------------------------------------------- 2453 2454Client::Client(const sp<SurfaceFlinger>& flinger) 2455 : mFlinger(flinger), mNameGenerator(1) 2456{ 2457} 2458 2459Client::~Client() 2460{ 2461 const size_t count = mLayers.size(); 2462 for (size_t i=0 ; i<count ; i++) { 2463 sp<LayerBaseClient> layer(mLayers.valueAt(i).promote()); 2464 if (layer != 0) { 2465 mFlinger->removeLayer(layer); 2466 } 2467 } 2468} 2469 2470status_t Client::initCheck() const { 2471 return NO_ERROR; 2472} 2473 2474size_t Client::attachLayer(const sp<LayerBaseClient>& layer) 2475{ 2476 Mutex::Autolock _l(mLock); 2477 size_t name = mNameGenerator++; 2478 mLayers.add(name, layer); 2479 return name; 2480} 2481 2482void Client::detachLayer(const LayerBaseClient* layer) 2483{ 2484 Mutex::Autolock _l(mLock); 2485 // we do a linear search here, because this doesn't happen often 2486 const size_t count = mLayers.size(); 2487 for (size_t i=0 ; i<count ; i++) { 2488 if (mLayers.valueAt(i) == layer) { 2489 mLayers.removeItemsAt(i, 1); 2490 break; 2491 } 2492 } 2493} 2494sp<LayerBaseClient> Client::getLayerUser(int32_t i) const 2495{ 2496 Mutex::Autolock _l(mLock); 2497 sp<LayerBaseClient> lbc; 2498 wp<LayerBaseClient> layer(mLayers.valueFor(i)); 2499 if (layer != 0) { 2500 lbc = layer.promote(); 2501 LOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i)); 2502 } 2503 return lbc; 2504} 2505 2506 2507status_t Client::onTransact( 2508 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2509{ 2510 // these must be checked 2511 IPCThreadState* ipc = IPCThreadState::self(); 2512 const int pid = ipc->getCallingPid(); 2513 const int uid = ipc->getCallingUid(); 2514 const int self_pid = getpid(); 2515 if (UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) { 2516 // we're called from a different process, do the real check 2517 if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger)) 2518 { 2519 LOGE("Permission Denial: " 2520 "can't openGlobalTransaction pid=%d, uid=%d", pid, uid); 2521 return PERMISSION_DENIED; 2522 } 2523 } 2524 return BnSurfaceComposerClient::onTransact(code, data, reply, flags); 2525} 2526 2527 2528sp<ISurface> Client::createSurface( 2529 ISurfaceComposerClient::surface_data_t* params, 2530 const String8& name, 2531 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2532 uint32_t flags) 2533{ 2534 /* 2535 * createSurface must be called from the GL thread so that it can 2536 * have access to the GL context. 2537 */ 2538 2539 class MessageCreateSurface : public MessageBase { 2540 sp<ISurface> result; 2541 SurfaceFlinger* flinger; 2542 ISurfaceComposerClient::surface_data_t* params; 2543 Client* client; 2544 const String8& name; 2545 DisplayID display; 2546 uint32_t w, h; 2547 PixelFormat format; 2548 uint32_t flags; 2549 public: 2550 MessageCreateSurface(SurfaceFlinger* flinger, 2551 ISurfaceComposerClient::surface_data_t* params, 2552 const String8& name, Client* client, 2553 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 2554 uint32_t flags) 2555 : flinger(flinger), params(params), client(client), name(name), 2556 display(display), w(w), h(h), format(format), flags(flags) 2557 { 2558 } 2559 sp<ISurface> getResult() const { return result; } 2560 virtual bool handler() { 2561 result = flinger->createSurface(params, name, client, 2562 display, w, h, format, flags); 2563 return true; 2564 } 2565 }; 2566 2567 sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(), 2568 params, name, this, display, w, h, format, flags); 2569 mFlinger->postMessageSync(msg); 2570 return static_cast<MessageCreateSurface*>( msg.get() )->getResult(); 2571} 2572status_t Client::destroySurface(SurfaceID sid) { 2573 return mFlinger->removeSurface(this, sid); 2574} 2575 2576// --------------------------------------------------------------------------- 2577 2578GraphicBufferAlloc::GraphicBufferAlloc() {} 2579 2580GraphicBufferAlloc::~GraphicBufferAlloc() {} 2581 2582sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h, 2583 PixelFormat format, uint32_t usage, status_t* error) { 2584 sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage)); 2585 status_t err = graphicBuffer->initCheck(); 2586 *error = err; 2587 if (err != 0 || graphicBuffer->handle == 0) { 2588 if (err == NO_MEMORY) { 2589 GraphicBuffer::dumpAllocationsToSystemLog(); 2590 } 2591 LOGE("GraphicBufferAlloc::createGraphicBuffer(w=%d, h=%d) " 2592 "failed (%s), handle=%p", 2593 w, h, strerror(-err), graphicBuffer->handle); 2594 return 0; 2595 } 2596 return graphicBuffer; 2597} 2598 2599// --------------------------------------------------------------------------- 2600 2601GraphicPlane::GraphicPlane() 2602 : mHw(0) 2603{ 2604} 2605 2606GraphicPlane::~GraphicPlane() { 2607 delete mHw; 2608} 2609 2610bool GraphicPlane::initialized() const { 2611 return mHw ? true : false; 2612} 2613 2614int GraphicPlane::getWidth() const { 2615 return mWidth; 2616} 2617 2618int GraphicPlane::getHeight() const { 2619 return mHeight; 2620} 2621 2622void GraphicPlane::setDisplayHardware(DisplayHardware *hw) 2623{ 2624 mHw = hw; 2625 2626 // initialize the display orientation transform. 2627 // it's a constant that should come from the display driver. 2628 int displayOrientation = ISurfaceComposer::eOrientationDefault; 2629 char property[PROPERTY_VALUE_MAX]; 2630 if (property_get("ro.sf.hwrotation", property, NULL) > 0) { 2631 //displayOrientation 2632 switch (atoi(property)) { 2633 case 90: 2634 displayOrientation = ISurfaceComposer::eOrientation90; 2635 break; 2636 case 270: 2637 displayOrientation = ISurfaceComposer::eOrientation270; 2638 break; 2639 } 2640 } 2641 2642 const float w = hw->getWidth(); 2643 const float h = hw->getHeight(); 2644 GraphicPlane::orientationToTransfrom(displayOrientation, w, h, 2645 &mDisplayTransform); 2646 if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) { 2647 mDisplayWidth = h; 2648 mDisplayHeight = w; 2649 } else { 2650 mDisplayWidth = w; 2651 mDisplayHeight = h; 2652 } 2653 2654 setOrientation(ISurfaceComposer::eOrientationDefault); 2655} 2656 2657status_t GraphicPlane::orientationToTransfrom( 2658 int orientation, int w, int h, Transform* tr) 2659{ 2660 uint32_t flags = 0; 2661 switch (orientation) { 2662 case ISurfaceComposer::eOrientationDefault: 2663 flags = Transform::ROT_0; 2664 break; 2665 case ISurfaceComposer::eOrientation90: 2666 flags = Transform::ROT_90; 2667 break; 2668 case ISurfaceComposer::eOrientation180: 2669 flags = Transform::ROT_180; 2670 break; 2671 case ISurfaceComposer::eOrientation270: 2672 flags = Transform::ROT_270; 2673 break; 2674 default: 2675 return BAD_VALUE; 2676 } 2677 tr->set(flags, w, h); 2678 return NO_ERROR; 2679} 2680 2681status_t GraphicPlane::setOrientation(int orientation) 2682{ 2683 // If the rotation can be handled in hardware, this is where 2684 // the magic should happen. 2685 2686 const DisplayHardware& hw(displayHardware()); 2687 const float w = mDisplayWidth; 2688 const float h = mDisplayHeight; 2689 mWidth = int(w); 2690 mHeight = int(h); 2691 2692 Transform orientationTransform; 2693 GraphicPlane::orientationToTransfrom(orientation, w, h, 2694 &orientationTransform); 2695 if (orientation & ISurfaceComposer::eOrientationSwapMask) { 2696 mWidth = int(h); 2697 mHeight = int(w); 2698 } 2699 2700 mOrientation = orientation; 2701 mGlobalTransform = mDisplayTransform * orientationTransform; 2702 return NO_ERROR; 2703} 2704 2705const DisplayHardware& GraphicPlane::displayHardware() const { 2706 return *mHw; 2707} 2708 2709DisplayHardware& GraphicPlane::editDisplayHardware() { 2710 return *mHw; 2711} 2712 2713const Transform& GraphicPlane::transform() const { 2714 return mGlobalTransform; 2715} 2716 2717EGLDisplay GraphicPlane::getEGLDisplay() const { 2718 return mHw->getEGLDisplay(); 2719} 2720 2721// --------------------------------------------------------------------------- 2722 2723}; // namespace android 2724