SurfaceFlinger.cpp revision 28fc78bf5fbb6288a27f3f25565a960a1873b0ef
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <stdint.h> 20#include <sys/types.h> 21#include <errno.h> 22#include <math.h> 23#include <dlfcn.h> 24 25#include <EGL/egl.h> 26#include <GLES/gl.h> 27 28#include <cutils/log.h> 29#include <cutils/properties.h> 30 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryHeapBase.h> 34#include <binder/PermissionCache.h> 35 36#include <ui/DisplayInfo.h> 37 38#include <gui/BitTube.h> 39#include <gui/BufferQueue.h> 40#include <gui/GuiConfig.h> 41#include <gui/IDisplayEventConnection.h> 42#include <gui/Surface.h> 43#include <gui/GraphicBufferAlloc.h> 44 45#include <ui/GraphicBufferAllocator.h> 46#include <ui/PixelFormat.h> 47#include <ui/UiConfig.h> 48 49#include <utils/misc.h> 50#include <utils/String8.h> 51#include <utils/String16.h> 52#include <utils/StopWatch.h> 53#include <utils/Trace.h> 54 55#include <private/android_filesystem_config.h> 56#include <private/gui/SyncFeatures.h> 57 58#include "clz.h" 59#include "DdmConnection.h" 60#include "DisplayDevice.h" 61#include "Client.h" 62#include "EventThread.h" 63#include "GLExtensions.h" 64#include "Layer.h" 65#include "LayerDim.h" 66#include "SurfaceFlinger.h" 67 68#include "DisplayHardware/FramebufferSurface.h" 69#include "DisplayHardware/HWComposer.h" 70#include "DisplayHardware/VirtualDisplaySurface.h" 71 72#define DISPLAY_COUNT 1 73 74EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name); 75 76namespace android { 77// --------------------------------------------------------------------------- 78 79const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 80const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 81const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 82const String16 sDump("android.permission.DUMP"); 83 84// --------------------------------------------------------------------------- 85 86SurfaceFlinger::SurfaceFlinger() 87 : BnSurfaceComposer(), Thread(false), 88 mTransactionFlags(0), 89 mTransactionPending(false), 90 mAnimTransactionPending(false), 91 mLayersRemoved(false), 92 mRepaintEverything(0), 93 mBootTime(systemTime()), 94 mVisibleRegionsDirty(false), 95 mHwWorkListDirty(false), 96 mAnimCompositionPending(false), 97 mDebugRegion(0), 98 mDebugDDMS(0), 99 mDebugDisableHWC(0), 100 mDebugDisableTransformHint(0), 101 mDebugInSwapBuffers(0), 102 mLastSwapBufferTime(0), 103 mDebugInTransaction(0), 104 mLastTransactionTime(0), 105 mBootFinished(false) 106{ 107 ALOGI("SurfaceFlinger is starting"); 108 109 // debugging stuff... 110 char value[PROPERTY_VALUE_MAX]; 111 112 property_get("ro.bq.gpu_to_cpu_unsupported", value, "0"); 113 mGpuToCpuSupported = !atoi(value); 114 115 property_get("debug.sf.showupdates", value, "0"); 116 mDebugRegion = atoi(value); 117 118 property_get("debug.sf.ddms", value, "0"); 119 mDebugDDMS = atoi(value); 120 if (mDebugDDMS) { 121 if (!startDdmConnection()) { 122 // start failed, and DDMS debugging not enabled 123 mDebugDDMS = 0; 124 } 125 } 126 ALOGI_IF(mDebugRegion, "showupdates enabled"); 127 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 128} 129 130void SurfaceFlinger::onFirstRef() 131{ 132 mEventQueue.init(this); 133 134 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 135 136 // Wait for the main thread to be done with its initialization 137 mReadyToRunBarrier.wait(); 138} 139 140 141SurfaceFlinger::~SurfaceFlinger() 142{ 143 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 144 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 145 eglTerminate(display); 146} 147 148void SurfaceFlinger::binderDied(const wp<IBinder>& who) 149{ 150 // the window manager died on us. prepare its eulogy. 151 152 // restore initial conditions (default device unblank, etc) 153 initializeDisplays(); 154 155 // restart the boot-animation 156 startBootAnim(); 157} 158 159sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 160{ 161 sp<ISurfaceComposerClient> bclient; 162 sp<Client> client(new Client(this)); 163 status_t err = client->initCheck(); 164 if (err == NO_ERROR) { 165 bclient = client; 166 } 167 return bclient; 168} 169 170sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 171 bool secure) 172{ 173 class DisplayToken : public BBinder { 174 sp<SurfaceFlinger> flinger; 175 virtual ~DisplayToken() { 176 // no more references, this display must be terminated 177 Mutex::Autolock _l(flinger->mStateLock); 178 flinger->mCurrentState.displays.removeItem(this); 179 flinger->setTransactionFlags(eDisplayTransactionNeeded); 180 } 181 public: 182 DisplayToken(const sp<SurfaceFlinger>& flinger) 183 : flinger(flinger) { 184 } 185 }; 186 187 sp<BBinder> token = new DisplayToken(this); 188 189 Mutex::Autolock _l(mStateLock); 190 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 191 info.displayName = displayName; 192 info.isSecure = secure; 193 mCurrentState.displays.add(token, info); 194 195 return token; 196} 197 198void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { 199 ALOGW_IF(mBuiltinDisplays[type], 200 "Overwriting display token for display type %d", type); 201 mBuiltinDisplays[type] = new BBinder(); 202 DisplayDeviceState info(type); 203 // All non-virtual displays are currently considered secure. 204 info.isSecure = true; 205 mCurrentState.displays.add(mBuiltinDisplays[type], info); 206} 207 208sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 209 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 210 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 211 return NULL; 212 } 213 return mBuiltinDisplays[id]; 214} 215 216sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 217{ 218 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 219 return gba; 220} 221 222void SurfaceFlinger::bootFinished() 223{ 224 const nsecs_t now = systemTime(); 225 const nsecs_t duration = now - mBootTime; 226 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 227 mBootFinished = true; 228 229 // wait patiently for the window manager death 230 const String16 name("window"); 231 sp<IBinder> window(defaultServiceManager()->getService(name)); 232 if (window != 0) { 233 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 234 } 235 236 // stop boot animation 237 // formerly we would just kill the process, but we now ask it to exit so it 238 // can choose where to stop the animation. 239 property_set("service.bootanim.exit", "1"); 240} 241 242void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 243 class MessageDestroyGLTexture : public MessageBase { 244 GLuint texture; 245 public: 246 MessageDestroyGLTexture(GLuint texture) 247 : texture(texture) { 248 } 249 virtual bool handler() { 250 glDeleteTextures(1, &texture); 251 return true; 252 } 253 }; 254 postMessageAsync(new MessageDestroyGLTexture(texture)); 255} 256 257status_t SurfaceFlinger::selectConfigForAttribute( 258 EGLDisplay dpy, 259 EGLint const* attrs, 260 EGLint attribute, EGLint wanted, 261 EGLConfig* outConfig) 262{ 263 EGLConfig config = NULL; 264 EGLint numConfigs = -1, n=0; 265 eglGetConfigs(dpy, NULL, 0, &numConfigs); 266 EGLConfig* const configs = new EGLConfig[numConfigs]; 267 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 268 269 if (n) { 270 if (attribute != EGL_NONE) { 271 for (int i=0 ; i<n ; i++) { 272 EGLint value = 0; 273 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 274 if (wanted == value) { 275 *outConfig = configs[i]; 276 delete [] configs; 277 return NO_ERROR; 278 } 279 } 280 } else { 281 // just pick the first one 282 *outConfig = configs[0]; 283 delete [] configs; 284 return NO_ERROR; 285 } 286 } 287 delete [] configs; 288 return NAME_NOT_FOUND; 289} 290 291class EGLAttributeVector { 292 struct Attribute; 293 class Adder; 294 friend class Adder; 295 KeyedVector<Attribute, EGLint> mList; 296 struct Attribute { 297 Attribute() {}; 298 Attribute(EGLint v) : v(v) { } 299 EGLint v; 300 bool operator < (const Attribute& other) const { 301 // this places EGL_NONE at the end 302 EGLint lhs(v); 303 EGLint rhs(other.v); 304 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 305 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 306 return lhs < rhs; 307 } 308 }; 309 class Adder { 310 friend class EGLAttributeVector; 311 EGLAttributeVector& v; 312 EGLint attribute; 313 Adder(EGLAttributeVector& v, EGLint attribute) 314 : v(v), attribute(attribute) { 315 } 316 public: 317 void operator = (EGLint value) { 318 if (attribute != EGL_NONE) { 319 v.mList.add(attribute, value); 320 } 321 } 322 operator EGLint () const { return v.mList[attribute]; } 323 }; 324public: 325 EGLAttributeVector() { 326 mList.add(EGL_NONE, EGL_NONE); 327 } 328 void remove(EGLint attribute) { 329 if (attribute != EGL_NONE) { 330 mList.removeItem(attribute); 331 } 332 } 333 Adder operator [] (EGLint attribute) { 334 return Adder(*this, attribute); 335 } 336 EGLint operator [] (EGLint attribute) const { 337 return mList[attribute]; 338 } 339 // cast-operator to (EGLint const*) 340 operator EGLint const* () const { return &mList.keyAt(0).v; } 341}; 342 343EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 344 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 345 // it is to be used with WIFI displays 346 EGLConfig config; 347 EGLint dummy; 348 status_t err; 349 350 EGLAttributeVector attribs; 351 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 352 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 353 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 354 attribs[EGL_RED_SIZE] = 8; 355 attribs[EGL_GREEN_SIZE] = 8; 356 attribs[EGL_BLUE_SIZE] = 8; 357 358 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 359 if (!err) 360 goto success; 361 362 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 363 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 364 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 365 err = selectConfigForAttribute(display, attribs, 366 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 367 if (!err) 368 goto success; 369 370 // maybe we failed because of EGL_RECORDABLE_ANDROID 371 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 372 attribs.remove(EGL_RECORDABLE_ANDROID); 373 err = selectConfigForAttribute(display, attribs, 374 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 375 if (!err) 376 goto success; 377 378 // allow less than 24-bit color; the non-gpu-accelerated emulator only 379 // supports 16-bit color 380 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 381 attribs.remove(EGL_RED_SIZE); 382 attribs.remove(EGL_GREEN_SIZE); 383 attribs.remove(EGL_BLUE_SIZE); 384 err = selectConfigForAttribute(display, attribs, 385 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 386 if (!err) 387 goto success; 388 389 // this EGL is too lame for Android 390 ALOGE("no suitable EGLConfig found, giving up"); 391 392 return 0; 393 394success: 395 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 396 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 397 return config; 398} 399 400EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 401 // Also create our EGLContext 402 EGLint contextAttributes[] = { 403#ifdef EGL_IMG_context_priority 404#ifdef HAS_CONTEXT_PRIORITY 405#warning "using EGL_IMG_context_priority" 406 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 407#endif 408#endif 409 EGL_NONE, EGL_NONE 410 }; 411 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 412 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 413 return ctxt; 414} 415 416void SurfaceFlinger::initializeGL(EGLDisplay display) { 417 GLExtensions& extensions(GLExtensions::getInstance()); 418 extensions.initWithGLStrings( 419 glGetString(GL_VENDOR), 420 glGetString(GL_RENDERER), 421 glGetString(GL_VERSION), 422 glGetString(GL_EXTENSIONS), 423 eglQueryString(display, EGL_VENDOR), 424 eglQueryString(display, EGL_VERSION), 425 eglQueryString(display, EGL_EXTENSIONS)); 426 427 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 428 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 429 430 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 431 glPixelStorei(GL_PACK_ALIGNMENT, 4); 432 glEnableClientState(GL_VERTEX_ARRAY); 433 glShadeModel(GL_FLAT); 434 glDisable(GL_DITHER); 435 glDisable(GL_CULL_FACE); 436 437 struct pack565 { 438 inline uint16_t operator() (int r, int g, int b) const { 439 return (r<<11)|(g<<5)|b; 440 } 441 } pack565; 442 443 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 444 glGenTextures(1, &mProtectedTexName); 445 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 446 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 447 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 448 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 449 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 450 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 451 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 452 453 // print some debugging info 454 EGLint r,g,b,a; 455 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 456 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 457 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 458 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 459 ALOGI("EGL informations:"); 460 ALOGI("vendor : %s", extensions.getEglVendor()); 461 ALOGI("version : %s", extensions.getEglVersion()); 462 ALOGI("extensions: %s", extensions.getEglExtension()); 463 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 464 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 465 ALOGI("OpenGL ES informations:"); 466 ALOGI("vendor : %s", extensions.getVendor()); 467 ALOGI("renderer : %s", extensions.getRenderer()); 468 ALOGI("version : %s", extensions.getVersion()); 469 ALOGI("extensions: %s", extensions.getExtension()); 470 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 471 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 472} 473 474status_t SurfaceFlinger::readyToRun() 475{ 476 ALOGI( "SurfaceFlinger's main thread ready to run. " 477 "Initializing graphics H/W..."); 478 479 Mutex::Autolock _l(mStateLock); 480 481 // initialize EGL for the default display 482 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 483 eglInitialize(mEGLDisplay, NULL, NULL); 484 485 // Initialize the H/W composer object. There may or may not be an 486 // actual hardware composer underneath. 487 mHwc = new HWComposer(this, 488 *static_cast<HWComposer::EventHandler *>(this)); 489 490 // initialize the config and context 491 EGLint format = mHwc->getVisualID(); 492 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 493 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 494 495 // figure out which format we got 496 eglGetConfigAttrib(mEGLDisplay, mEGLConfig, 497 EGL_NATIVE_VISUAL_ID, &mEGLNativeVisualId); 498 499 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 500 "couldn't create EGLContext"); 501 502 // initialize our non-virtual displays 503 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 504 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 505 // set-up the displays that are already connected 506 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 507 // All non-virtual displays are currently considered secure. 508 bool isSecure = true; 509 createBuiltinDisplayLocked(type); 510 wp<IBinder> token = mBuiltinDisplays[i]; 511 512 sp<DisplayDevice> hw = new DisplayDevice(this, 513 type, allocateHwcDisplayId(type), isSecure, token, 514 new FramebufferSurface(*mHwc, i), 515 mEGLConfig); 516 if (i > DisplayDevice::DISPLAY_PRIMARY) { 517 // FIXME: currently we don't get blank/unblank requests 518 // for displays other than the main display, so we always 519 // assume a connected display is unblanked. 520 ALOGD("marking display %d as acquired/unblanked", i); 521 hw->acquireScreen(); 522 } 523 mDisplays.add(token, hw); 524 } 525 } 526 527 // we need a GL context current in a few places, when initializing 528 // OpenGL ES (see below), or creating a layer, 529 // or when a texture is (asynchronously) destroyed, and for that 530 // we need a valid surface, so it's convenient to use the main display 531 // for that. 532 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 533 534 // initialize OpenGL ES 535 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 536 initializeGL(mEGLDisplay); 537 538 // start the EventThread 539 mEventThread = new EventThread(this); 540 mEventQueue.setEventThread(mEventThread); 541 542 // initialize our drawing state 543 mDrawingState = mCurrentState; 544 545 546 // We're now ready to accept clients... 547 mReadyToRunBarrier.open(); 548 549 // set initial conditions (e.g. unblank default device) 550 initializeDisplays(); 551 552 // start boot animation 553 startBootAnim(); 554 555 return NO_ERROR; 556} 557 558int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 559 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 560 type : mHwc->allocateDisplayId(); 561} 562 563void SurfaceFlinger::startBootAnim() { 564 // start boot animation 565 property_set("service.bootanim.exit", "0"); 566 property_set("ctl.start", "bootanim"); 567} 568 569uint32_t SurfaceFlinger::getMaxTextureSize() const { 570 return mMaxTextureSize; 571} 572 573uint32_t SurfaceFlinger::getMaxViewportDims() const { 574 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 575 mMaxViewportDims[0] : mMaxViewportDims[1]; 576} 577 578// ---------------------------------------------------------------------------- 579 580bool SurfaceFlinger::authenticateSurfaceTexture( 581 const sp<IGraphicBufferProducer>& bufferProducer) const { 582 Mutex::Autolock _l(mStateLock); 583 sp<IBinder> surfaceTextureBinder(bufferProducer->asBinder()); 584 return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0; 585} 586 587status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 588 int32_t type = NAME_NOT_FOUND; 589 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 590 if (display == mBuiltinDisplays[i]) { 591 type = i; 592 break; 593 } 594 } 595 596 if (type < 0) { 597 return type; 598 } 599 600 const HWComposer& hwc(getHwComposer()); 601 float xdpi = hwc.getDpiX(type); 602 float ydpi = hwc.getDpiY(type); 603 604 // TODO: Not sure if display density should handled by SF any longer 605 class Density { 606 static int getDensityFromProperty(char const* propName) { 607 char property[PROPERTY_VALUE_MAX]; 608 int density = 0; 609 if (property_get(propName, property, NULL) > 0) { 610 density = atoi(property); 611 } 612 return density; 613 } 614 public: 615 static int getEmuDensity() { 616 return getDensityFromProperty("qemu.sf.lcd_density"); } 617 static int getBuildDensity() { 618 return getDensityFromProperty("ro.sf.lcd_density"); } 619 }; 620 621 if (type == DisplayDevice::DISPLAY_PRIMARY) { 622 // The density of the device is provided by a build property 623 float density = Density::getBuildDensity() / 160.0f; 624 if (density == 0) { 625 // the build doesn't provide a density -- this is wrong! 626 // use xdpi instead 627 ALOGE("ro.sf.lcd_density must be defined as a build property"); 628 density = xdpi / 160.0f; 629 } 630 if (Density::getEmuDensity()) { 631 // if "qemu.sf.lcd_density" is specified, it overrides everything 632 xdpi = ydpi = density = Density::getEmuDensity(); 633 density /= 160.0f; 634 } 635 info->density = density; 636 637 // TODO: this needs to go away (currently needed only by webkit) 638 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 639 info->orientation = hw->getOrientation(); 640 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 641 } else { 642 // TODO: where should this value come from? 643 static const int TV_DENSITY = 213; 644 info->density = TV_DENSITY / 160.0f; 645 info->orientation = 0; 646 } 647 648 info->w = hwc.getWidth(type); 649 info->h = hwc.getHeight(type); 650 info->xdpi = xdpi; 651 info->ydpi = ydpi; 652 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 653 654 // All non-virtual displays are currently considered secure. 655 info->secure = true; 656 657 return NO_ERROR; 658} 659 660// ---------------------------------------------------------------------------- 661 662sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 663 return mEventThread->createEventConnection(); 664} 665 666// ---------------------------------------------------------------------------- 667 668void SurfaceFlinger::waitForEvent() { 669 mEventQueue.waitMessage(); 670} 671 672void SurfaceFlinger::signalTransaction() { 673 mEventQueue.invalidate(); 674} 675 676void SurfaceFlinger::signalLayerUpdate() { 677 mEventQueue.invalidate(); 678} 679 680void SurfaceFlinger::signalRefresh() { 681 mEventQueue.refresh(); 682} 683 684status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 685 nsecs_t reltime, uint32_t flags) { 686 return mEventQueue.postMessage(msg, reltime); 687} 688 689status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 690 nsecs_t reltime, uint32_t flags) { 691 status_t res = mEventQueue.postMessage(msg, reltime); 692 if (res == NO_ERROR) { 693 msg->wait(); 694 } 695 return res; 696} 697 698bool SurfaceFlinger::threadLoop() { 699 waitForEvent(); 700 return true; 701} 702 703void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 704 if (mEventThread == NULL) { 705 // This is a temporary workaround for b/7145521. A non-null pointer 706 // does not mean EventThread has finished initializing, so this 707 // is not a correct fix. 708 ALOGW("WARNING: EventThread not started, ignoring vsync"); 709 return; 710 } 711 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 712 // we should only receive DisplayDevice::DisplayType from the vsync callback 713 mEventThread->onVSyncReceived(type, timestamp); 714 } 715} 716 717void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 718 if (mEventThread == NULL) { 719 // This is a temporary workaround for b/7145521. A non-null pointer 720 // does not mean EventThread has finished initializing, so this 721 // is not a correct fix. 722 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 723 return; 724 } 725 726 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 727 Mutex::Autolock _l(mStateLock); 728 if (connected) { 729 createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); 730 } else { 731 mCurrentState.displays.removeItem(mBuiltinDisplays[type]); 732 mBuiltinDisplays[type].clear(); 733 } 734 setTransactionFlags(eDisplayTransactionNeeded); 735 736 // Defer EventThread notification until SF has updated mDisplays. 737 } 738} 739 740void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 741 getHwComposer().eventControl(disp, event, enabled); 742} 743 744void SurfaceFlinger::onMessageReceived(int32_t what) { 745 ATRACE_CALL(); 746 switch (what) { 747 case MessageQueue::TRANSACTION: 748 handleMessageTransaction(); 749 break; 750 case MessageQueue::INVALIDATE: 751 handleMessageTransaction(); 752 handleMessageInvalidate(); 753 signalRefresh(); 754 break; 755 case MessageQueue::REFRESH: 756 handleMessageRefresh(); 757 break; 758 } 759} 760 761void SurfaceFlinger::handleMessageTransaction() { 762 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 763 if (transactionFlags) { 764 handleTransaction(transactionFlags); 765 } 766} 767 768void SurfaceFlinger::handleMessageInvalidate() { 769 ATRACE_CALL(); 770 handlePageFlip(); 771} 772 773void SurfaceFlinger::handleMessageRefresh() { 774 ATRACE_CALL(); 775 preComposition(); 776 rebuildLayerStacks(); 777 setUpHWComposer(); 778 doDebugFlashRegions(); 779 doComposition(); 780 postComposition(); 781} 782 783void SurfaceFlinger::doDebugFlashRegions() 784{ 785 // is debugging enabled 786 if (CC_LIKELY(!mDebugRegion)) 787 return; 788 789 const bool repaintEverything = mRepaintEverything; 790 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 791 const sp<DisplayDevice>& hw(mDisplays[dpy]); 792 if (hw->canDraw()) { 793 // transform the dirty region into this screen's coordinate space 794 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 795 if (!dirtyRegion.isEmpty()) { 796 // redraw the whole screen 797 doComposeSurfaces(hw, Region(hw->bounds())); 798 799 // and draw the dirty region 800 glDisable(GL_TEXTURE_EXTERNAL_OES); 801 glDisable(GL_TEXTURE_2D); 802 glDisable(GL_BLEND); 803 glColor4f(1, 0, 1, 1); 804 const int32_t height = hw->getHeight(); 805 Region::const_iterator it = dirtyRegion.begin(); 806 Region::const_iterator const end = dirtyRegion.end(); 807 while (it != end) { 808 const Rect& r = *it++; 809 GLfloat vertices[][2] = { 810 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 811 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 812 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 813 { (GLfloat) r.right, (GLfloat) (height - r.top) } 814 }; 815 glVertexPointer(2, GL_FLOAT, 0, vertices); 816 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 817 } 818 hw->compositionComplete(); 819 hw->swapBuffers(getHwComposer()); 820 } 821 } 822 } 823 824 postFramebuffer(); 825 826 if (mDebugRegion > 1) { 827 usleep(mDebugRegion * 1000); 828 } 829 830 HWComposer& hwc(getHwComposer()); 831 if (hwc.initCheck() == NO_ERROR) { 832 status_t err = hwc.prepare(); 833 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 834 } 835} 836 837void SurfaceFlinger::preComposition() 838{ 839 bool needExtraInvalidate = false; 840 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 841 const size_t count = currentLayers.size(); 842 for (size_t i=0 ; i<count ; i++) { 843 if (currentLayers[i]->onPreComposition()) { 844 needExtraInvalidate = true; 845 } 846 } 847 if (needExtraInvalidate) { 848 signalLayerUpdate(); 849 } 850} 851 852void SurfaceFlinger::postComposition() 853{ 854 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 855 const size_t count = currentLayers.size(); 856 for (size_t i=0 ; i<count ; i++) { 857 currentLayers[i]->onPostComposition(); 858 } 859 860 if (mAnimCompositionPending) { 861 mAnimCompositionPending = false; 862 863 const HWComposer& hwc = getHwComposer(); 864 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 865 if (presentFence->isValid()) { 866 mAnimFrameTracker.setActualPresentFence(presentFence); 867 } else { 868 // The HWC doesn't support present fences, so use the refresh 869 // timestamp instead. 870 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 871 mAnimFrameTracker.setActualPresentTime(presentTime); 872 } 873 mAnimFrameTracker.advanceFrame(); 874 } 875} 876 877void SurfaceFlinger::rebuildLayerStacks() { 878 // rebuild the visible layer list per screen 879 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 880 ATRACE_CALL(); 881 mVisibleRegionsDirty = false; 882 invalidateHwcGeometry(); 883 884 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 885 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 886 Region opaqueRegion; 887 Region dirtyRegion; 888 Vector< sp<Layer> > layersSortedByZ; 889 const sp<DisplayDevice>& hw(mDisplays[dpy]); 890 const Transform& tr(hw->getTransform()); 891 const Rect bounds(hw->getBounds()); 892 if (hw->canDraw()) { 893 SurfaceFlinger::computeVisibleRegions(currentLayers, 894 hw->getLayerStack(), dirtyRegion, opaqueRegion); 895 896 const size_t count = currentLayers.size(); 897 for (size_t i=0 ; i<count ; i++) { 898 const sp<Layer>& layer(currentLayers[i]); 899 const Layer::State& s(layer->drawingState()); 900 if (s.layerStack == hw->getLayerStack()) { 901 Region drawRegion(tr.transform( 902 layer->visibleNonTransparentRegion)); 903 drawRegion.andSelf(bounds); 904 if (!drawRegion.isEmpty()) { 905 layersSortedByZ.add(layer); 906 } 907 } 908 } 909 } 910 hw->setVisibleLayersSortedByZ(layersSortedByZ); 911 hw->undefinedRegion.set(bounds); 912 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 913 hw->dirtyRegion.orSelf(dirtyRegion); 914 } 915 } 916} 917 918void SurfaceFlinger::setUpHWComposer() { 919 HWComposer& hwc(getHwComposer()); 920 if (hwc.initCheck() == NO_ERROR) { 921 // build the h/w work list 922 if (CC_UNLIKELY(mHwWorkListDirty)) { 923 mHwWorkListDirty = false; 924 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 925 sp<const DisplayDevice> hw(mDisplays[dpy]); 926 const int32_t id = hw->getHwcDisplayId(); 927 if (id >= 0) { 928 const Vector< sp<Layer> >& currentLayers( 929 hw->getVisibleLayersSortedByZ()); 930 const size_t count = currentLayers.size(); 931 if (hwc.createWorkList(id, count) == NO_ERROR) { 932 HWComposer::LayerListIterator cur = hwc.begin(id); 933 const HWComposer::LayerListIterator end = hwc.end(id); 934 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 935 const sp<Layer>& layer(currentLayers[i]); 936 layer->setGeometry(hw, *cur); 937 if (mDebugDisableHWC || mDebugRegion) { 938 cur->setSkip(true); 939 } 940 } 941 } 942 } 943 } 944 } 945 946 // set the per-frame data 947 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 948 sp<const DisplayDevice> hw(mDisplays[dpy]); 949 const int32_t id = hw->getHwcDisplayId(); 950 if (id >= 0) { 951 const Vector< sp<Layer> >& currentLayers( 952 hw->getVisibleLayersSortedByZ()); 953 const size_t count = currentLayers.size(); 954 HWComposer::LayerListIterator cur = hwc.begin(id); 955 const HWComposer::LayerListIterator end = hwc.end(id); 956 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 957 /* 958 * update the per-frame h/w composer data for each layer 959 * and build the transparent region of the FB 960 */ 961 const sp<Layer>& layer(currentLayers[i]); 962 layer->setPerFrameData(hw, *cur); 963 } 964 } 965 } 966 967 status_t err = hwc.prepare(); 968 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 969 } 970} 971 972void SurfaceFlinger::doComposition() { 973 ATRACE_CALL(); 974 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 975 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 976 const sp<DisplayDevice>& hw(mDisplays[dpy]); 977 if (hw->canDraw()) { 978 // transform the dirty region into this screen's coordinate space 979 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 980 981 // repaint the framebuffer (if needed) 982 doDisplayComposition(hw, dirtyRegion); 983 984 hw->dirtyRegion.clear(); 985 hw->flip(hw->swapRegion); 986 hw->swapRegion.clear(); 987 } 988 // inform the h/w that we're done compositing 989 hw->compositionComplete(); 990 } 991 postFramebuffer(); 992} 993 994void SurfaceFlinger::postFramebuffer() 995{ 996 ATRACE_CALL(); 997 998 const nsecs_t now = systemTime(); 999 mDebugInSwapBuffers = now; 1000 1001 HWComposer& hwc(getHwComposer()); 1002 if (hwc.initCheck() == NO_ERROR) { 1003 if (!hwc.supportsFramebufferTarget()) { 1004 // EGL spec says: 1005 // "surface must be bound to the calling thread's current context, 1006 // for the current rendering API." 1007 DisplayDevice::makeCurrent(mEGLDisplay, 1008 getDefaultDisplayDevice(), mEGLContext); 1009 } 1010 hwc.commit(); 1011 } 1012 1013 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1014 sp<const DisplayDevice> hw(mDisplays[dpy]); 1015 const Vector< sp<Layer> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1016 hw->onSwapBuffersCompleted(hwc); 1017 const size_t count = currentLayers.size(); 1018 int32_t id = hw->getHwcDisplayId(); 1019 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1020 HWComposer::LayerListIterator cur = hwc.begin(id); 1021 const HWComposer::LayerListIterator end = hwc.end(id); 1022 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1023 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1024 } 1025 } else { 1026 for (size_t i = 0; i < count; i++) { 1027 currentLayers[i]->onLayerDisplayed(hw, NULL); 1028 } 1029 } 1030 } 1031 1032 mLastSwapBufferTime = systemTime() - now; 1033 mDebugInSwapBuffers = 0; 1034} 1035 1036void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1037{ 1038 ATRACE_CALL(); 1039 1040 Mutex::Autolock _l(mStateLock); 1041 const nsecs_t now = systemTime(); 1042 mDebugInTransaction = now; 1043 1044 // Here we're guaranteed that some transaction flags are set 1045 // so we can call handleTransactionLocked() unconditionally. 1046 // We call getTransactionFlags(), which will also clear the flags, 1047 // with mStateLock held to guarantee that mCurrentState won't change 1048 // until the transaction is committed. 1049 1050 transactionFlags = getTransactionFlags(eTransactionMask); 1051 handleTransactionLocked(transactionFlags); 1052 1053 mLastTransactionTime = systemTime() - now; 1054 mDebugInTransaction = 0; 1055 invalidateHwcGeometry(); 1056 // here the transaction has been committed 1057} 1058 1059void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1060{ 1061 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1062 const size_t count = currentLayers.size(); 1063 1064 /* 1065 * Traversal of the children 1066 * (perform the transaction for each of them if needed) 1067 */ 1068 1069 if (transactionFlags & eTraversalNeeded) { 1070 for (size_t i=0 ; i<count ; i++) { 1071 const sp<Layer>& layer(currentLayers[i]); 1072 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1073 if (!trFlags) continue; 1074 1075 const uint32_t flags = layer->doTransaction(0); 1076 if (flags & Layer::eVisibleRegion) 1077 mVisibleRegionsDirty = true; 1078 } 1079 } 1080 1081 /* 1082 * Perform display own transactions if needed 1083 */ 1084 1085 if (transactionFlags & eDisplayTransactionNeeded) { 1086 // here we take advantage of Vector's copy-on-write semantics to 1087 // improve performance by skipping the transaction entirely when 1088 // know that the lists are identical 1089 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1090 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1091 if (!curr.isIdenticalTo(draw)) { 1092 mVisibleRegionsDirty = true; 1093 const size_t cc = curr.size(); 1094 size_t dc = draw.size(); 1095 1096 // find the displays that were removed 1097 // (ie: in drawing state but not in current state) 1098 // also handle displays that changed 1099 // (ie: displays that are in both lists) 1100 for (size_t i=0 ; i<dc ; i++) { 1101 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1102 if (j < 0) { 1103 // in drawing state but not in current state 1104 if (!draw[i].isMainDisplay()) { 1105 // Call makeCurrent() on the primary display so we can 1106 // be sure that nothing associated with this display 1107 // is current. 1108 const sp<const DisplayDevice> defaultDisplay(getDefaultDisplayDevice()); 1109 DisplayDevice::makeCurrent(mEGLDisplay, defaultDisplay, mEGLContext); 1110 sp<DisplayDevice> hw(getDisplayDevice(draw.keyAt(i))); 1111 if (hw != NULL) 1112 hw->disconnect(getHwComposer()); 1113 if (draw[i].type < DisplayDevice::NUM_DISPLAY_TYPES) 1114 mEventThread->onHotplugReceived(draw[i].type, false); 1115 mDisplays.removeItem(draw.keyAt(i)); 1116 } else { 1117 ALOGW("trying to remove the main display"); 1118 } 1119 } else { 1120 // this display is in both lists. see if something changed. 1121 const DisplayDeviceState& state(curr[j]); 1122 const wp<IBinder>& display(curr.keyAt(j)); 1123 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1124 // changing the surface is like destroying and 1125 // recreating the DisplayDevice, so we just remove it 1126 // from the drawing state, so that it get re-added 1127 // below. 1128 sp<DisplayDevice> hw(getDisplayDevice(display)); 1129 if (hw != NULL) 1130 hw->disconnect(getHwComposer()); 1131 mDisplays.removeItem(display); 1132 mDrawingState.displays.removeItemsAt(i); 1133 dc--; i--; 1134 // at this point we must loop to the next item 1135 continue; 1136 } 1137 1138 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1139 if (disp != NULL) { 1140 if (state.layerStack != draw[i].layerStack) { 1141 disp->setLayerStack(state.layerStack); 1142 } 1143 if ((state.orientation != draw[i].orientation) 1144 || (state.viewport != draw[i].viewport) 1145 || (state.frame != draw[i].frame)) 1146 { 1147 disp->setProjection(state.orientation, 1148 state.viewport, state.frame); 1149 } 1150 } 1151 } 1152 } 1153 1154 // find displays that were added 1155 // (ie: in current state but not in drawing state) 1156 for (size_t i=0 ; i<cc ; i++) { 1157 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1158 const DisplayDeviceState& state(curr[i]); 1159 1160 sp<DisplaySurface> dispSurface; 1161 int32_t hwcDisplayId = -1; 1162 if (state.isVirtualDisplay()) { 1163 // Virtual displays without a surface are dormant: 1164 // they have external state (layer stack, projection, 1165 // etc.) but no internal state (i.e. a DisplayDevice). 1166 if (state.surface != NULL) { 1167 hwcDisplayId = allocateHwcDisplayId(state.type); 1168 dispSurface = new VirtualDisplaySurface( 1169 *mHwc, hwcDisplayId, state.surface, 1170 state.displayName); 1171 } 1172 } else { 1173 ALOGE_IF(state.surface!=NULL, 1174 "adding a supported display, but rendering " 1175 "surface is provided (%p), ignoring it", 1176 state.surface.get()); 1177 hwcDisplayId = allocateHwcDisplayId(state.type); 1178 // for supported (by hwc) displays we provide our 1179 // own rendering surface 1180 dispSurface = new FramebufferSurface(*mHwc, state.type); 1181 } 1182 1183 const wp<IBinder>& display(curr.keyAt(i)); 1184 if (dispSurface != NULL) { 1185 sp<DisplayDevice> hw = new DisplayDevice(this, 1186 state.type, hwcDisplayId, state.isSecure, 1187 display, dispSurface, mEGLConfig); 1188 hw->setLayerStack(state.layerStack); 1189 hw->setProjection(state.orientation, 1190 state.viewport, state.frame); 1191 hw->setDisplayName(state.displayName); 1192 mDisplays.add(display, hw); 1193 if (state.isVirtualDisplay()) { 1194 if (hwcDisplayId >= 0) { 1195 mHwc->setVirtualDisplayProperties(hwcDisplayId, 1196 hw->getWidth(), hw->getHeight(), 1197 hw->getFormat()); 1198 } 1199 } else { 1200 mEventThread->onHotplugReceived(state.type, true); 1201 } 1202 } 1203 } 1204 } 1205 } 1206 } 1207 1208 if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { 1209 // The transform hint might have changed for some layers 1210 // (either because a display has changed, or because a layer 1211 // as changed). 1212 // 1213 // Walk through all the layers in currentLayers, 1214 // and update their transform hint. 1215 // 1216 // If a layer is visible only on a single display, then that 1217 // display is used to calculate the hint, otherwise we use the 1218 // default display. 1219 // 1220 // NOTE: we do this here, rather than in rebuildLayerStacks() so that 1221 // the hint is set before we acquire a buffer from the surface texture. 1222 // 1223 // NOTE: layer transactions have taken place already, so we use their 1224 // drawing state. However, SurfaceFlinger's own transaction has not 1225 // happened yet, so we must use the current state layer list 1226 // (soon to become the drawing state list). 1227 // 1228 sp<const DisplayDevice> disp; 1229 uint32_t currentlayerStack = 0; 1230 for (size_t i=0; i<count; i++) { 1231 // NOTE: we rely on the fact that layers are sorted by 1232 // layerStack first (so we don't have to traverse the list 1233 // of displays for every layer). 1234 const sp<Layer>& layer(currentLayers[i]); 1235 uint32_t layerStack = layer->drawingState().layerStack; 1236 if (i==0 || currentlayerStack != layerStack) { 1237 currentlayerStack = layerStack; 1238 // figure out if this layerstack is mirrored 1239 // (more than one display) if so, pick the default display, 1240 // if not, pick the only display it's on. 1241 disp.clear(); 1242 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1243 sp<const DisplayDevice> hw(mDisplays[dpy]); 1244 if (hw->getLayerStack() == currentlayerStack) { 1245 if (disp == NULL) { 1246 disp = hw; 1247 } else { 1248 disp = NULL; 1249 break; 1250 } 1251 } 1252 } 1253 } 1254 if (disp == NULL) { 1255 // NOTE: TEMPORARY FIX ONLY. Real fix should cause layers to 1256 // redraw after transform hint changes. See bug 8508397. 1257 1258 // could be null when this layer is using a layerStack 1259 // that is not visible on any display. Also can occur at 1260 // screen off/on times. 1261 disp = getDefaultDisplayDevice(); 1262 } 1263 layer->updateTransformHint(disp); 1264 } 1265 } 1266 1267 1268 /* 1269 * Perform our own transaction if needed 1270 */ 1271 1272 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1273 if (currentLayers.size() > previousLayers.size()) { 1274 // layers have been added 1275 mVisibleRegionsDirty = true; 1276 } 1277 1278 // some layers might have been removed, so 1279 // we need to update the regions they're exposing. 1280 if (mLayersRemoved) { 1281 mLayersRemoved = false; 1282 mVisibleRegionsDirty = true; 1283 const size_t count = previousLayers.size(); 1284 for (size_t i=0 ; i<count ; i++) { 1285 const sp<Layer>& layer(previousLayers[i]); 1286 if (currentLayers.indexOf(layer) < 0) { 1287 // this layer is not visible anymore 1288 // TODO: we could traverse the tree from front to back and 1289 // compute the actual visible region 1290 // TODO: we could cache the transformed region 1291 const Layer::State& s(layer->drawingState()); 1292 Region visibleReg = s.transform.transform( 1293 Region(Rect(s.active.w, s.active.h))); 1294 invalidateLayerStack(s.layerStack, visibleReg); 1295 } 1296 } 1297 } 1298 1299 commitTransaction(); 1300} 1301 1302void SurfaceFlinger::commitTransaction() 1303{ 1304 if (!mLayersPendingRemoval.isEmpty()) { 1305 // Notify removed layers now that they can't be drawn from 1306 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1307 mLayersPendingRemoval[i]->onRemoved(); 1308 } 1309 mLayersPendingRemoval.clear(); 1310 } 1311 1312 // If this transaction is part of a window animation then the next frame 1313 // we composite should be considered an animation as well. 1314 mAnimCompositionPending = mAnimTransactionPending; 1315 1316 mDrawingState = mCurrentState; 1317 mTransactionPending = false; 1318 mAnimTransactionPending = false; 1319 mTransactionCV.broadcast(); 1320} 1321 1322void SurfaceFlinger::computeVisibleRegions( 1323 const LayerVector& currentLayers, uint32_t layerStack, 1324 Region& outDirtyRegion, Region& outOpaqueRegion) 1325{ 1326 ATRACE_CALL(); 1327 1328 Region aboveOpaqueLayers; 1329 Region aboveCoveredLayers; 1330 Region dirty; 1331 1332 outDirtyRegion.clear(); 1333 1334 size_t i = currentLayers.size(); 1335 while (i--) { 1336 const sp<Layer>& layer = currentLayers[i]; 1337 1338 // start with the whole surface at its current location 1339 const Layer::State& s(layer->drawingState()); 1340 1341 // only consider the layers on the given layer stack 1342 if (s.layerStack != layerStack) 1343 continue; 1344 1345 /* 1346 * opaqueRegion: area of a surface that is fully opaque. 1347 */ 1348 Region opaqueRegion; 1349 1350 /* 1351 * visibleRegion: area of a surface that is visible on screen 1352 * and not fully transparent. This is essentially the layer's 1353 * footprint minus the opaque regions above it. 1354 * Areas covered by a translucent surface are considered visible. 1355 */ 1356 Region visibleRegion; 1357 1358 /* 1359 * coveredRegion: area of a surface that is covered by all 1360 * visible regions above it (which includes the translucent areas). 1361 */ 1362 Region coveredRegion; 1363 1364 /* 1365 * transparentRegion: area of a surface that is hinted to be completely 1366 * transparent. This is only used to tell when the layer has no visible 1367 * non-transparent regions and can be removed from the layer list. It 1368 * does not affect the visibleRegion of this layer or any layers 1369 * beneath it. The hint may not be correct if apps don't respect the 1370 * SurfaceView restrictions (which, sadly, some don't). 1371 */ 1372 Region transparentRegion; 1373 1374 1375 // handle hidden surfaces by setting the visible region to empty 1376 if (CC_LIKELY(layer->isVisible())) { 1377 const bool translucent = !layer->isOpaque(); 1378 Rect bounds(s.transform.transform(layer->computeBounds())); 1379 visibleRegion.set(bounds); 1380 if (!visibleRegion.isEmpty()) { 1381 // Remove the transparent area from the visible region 1382 if (translucent) { 1383 const Transform tr(s.transform); 1384 if (tr.transformed()) { 1385 if (tr.preserveRects()) { 1386 // transform the transparent region 1387 transparentRegion = tr.transform(s.activeTransparentRegion); 1388 } else { 1389 // transformation too complex, can't do the 1390 // transparent region optimization. 1391 transparentRegion.clear(); 1392 } 1393 } else { 1394 transparentRegion = s.activeTransparentRegion; 1395 } 1396 } 1397 1398 // compute the opaque region 1399 const int32_t layerOrientation = s.transform.getOrientation(); 1400 if (s.alpha==255 && !translucent && 1401 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1402 // the opaque region is the layer's footprint 1403 opaqueRegion = visibleRegion; 1404 } 1405 } 1406 } 1407 1408 // Clip the covered region to the visible region 1409 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1410 1411 // Update aboveCoveredLayers for next (lower) layer 1412 aboveCoveredLayers.orSelf(visibleRegion); 1413 1414 // subtract the opaque region covered by the layers above us 1415 visibleRegion.subtractSelf(aboveOpaqueLayers); 1416 1417 // compute this layer's dirty region 1418 if (layer->contentDirty) { 1419 // we need to invalidate the whole region 1420 dirty = visibleRegion; 1421 // as well, as the old visible region 1422 dirty.orSelf(layer->visibleRegion); 1423 layer->contentDirty = false; 1424 } else { 1425 /* compute the exposed region: 1426 * the exposed region consists of two components: 1427 * 1) what's VISIBLE now and was COVERED before 1428 * 2) what's EXPOSED now less what was EXPOSED before 1429 * 1430 * note that (1) is conservative, we start with the whole 1431 * visible region but only keep what used to be covered by 1432 * something -- which mean it may have been exposed. 1433 * 1434 * (2) handles areas that were not covered by anything but got 1435 * exposed because of a resize. 1436 */ 1437 const Region newExposed = visibleRegion - coveredRegion; 1438 const Region oldVisibleRegion = layer->visibleRegion; 1439 const Region oldCoveredRegion = layer->coveredRegion; 1440 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1441 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1442 } 1443 dirty.subtractSelf(aboveOpaqueLayers); 1444 1445 // accumulate to the screen dirty region 1446 outDirtyRegion.orSelf(dirty); 1447 1448 // Update aboveOpaqueLayers for next (lower) layer 1449 aboveOpaqueLayers.orSelf(opaqueRegion); 1450 1451 // Store the visible region in screen space 1452 layer->setVisibleRegion(visibleRegion); 1453 layer->setCoveredRegion(coveredRegion); 1454 layer->setVisibleNonTransparentRegion( 1455 visibleRegion.subtract(transparentRegion)); 1456 } 1457 1458 outOpaqueRegion = aboveOpaqueLayers; 1459} 1460 1461void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1462 const Region& dirty) { 1463 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1464 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1465 if (hw->getLayerStack() == layerStack) { 1466 hw->dirtyRegion.orSelf(dirty); 1467 } 1468 } 1469} 1470 1471void SurfaceFlinger::handlePageFlip() 1472{ 1473 Region dirtyRegion; 1474 1475 bool visibleRegions = false; 1476 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1477 const size_t count = currentLayers.size(); 1478 for (size_t i=0 ; i<count ; i++) { 1479 const sp<Layer>& layer(currentLayers[i]); 1480 const Region dirty(layer->latchBuffer(visibleRegions)); 1481 const Layer::State& s(layer->drawingState()); 1482 invalidateLayerStack(s.layerStack, dirty); 1483 } 1484 1485 mVisibleRegionsDirty |= visibleRegions; 1486} 1487 1488void SurfaceFlinger::invalidateHwcGeometry() 1489{ 1490 mHwWorkListDirty = true; 1491} 1492 1493 1494void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1495 const Region& inDirtyRegion) 1496{ 1497 Region dirtyRegion(inDirtyRegion); 1498 1499 // compute the invalid region 1500 hw->swapRegion.orSelf(dirtyRegion); 1501 1502 uint32_t flags = hw->getFlags(); 1503 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1504 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1505 // takes a rectangle, we must make sure to update that whole 1506 // rectangle in that case 1507 dirtyRegion.set(hw->swapRegion.bounds()); 1508 } else { 1509 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1510 // We need to redraw the rectangle that will be updated 1511 // (pushed to the framebuffer). 1512 // This is needed because PARTIAL_UPDATES only takes one 1513 // rectangle instead of a region (see DisplayDevice::flip()) 1514 dirtyRegion.set(hw->swapRegion.bounds()); 1515 } else { 1516 // we need to redraw everything (the whole screen) 1517 dirtyRegion.set(hw->bounds()); 1518 hw->swapRegion = dirtyRegion; 1519 } 1520 } 1521 1522 doComposeSurfaces(hw, dirtyRegion); 1523 1524 // update the swap region and clear the dirty region 1525 hw->swapRegion.orSelf(dirtyRegion); 1526 1527 // swap buffers (presentation) 1528 hw->swapBuffers(getHwComposer()); 1529} 1530 1531void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1532{ 1533 const int32_t id = hw->getHwcDisplayId(); 1534 HWComposer& hwc(getHwComposer()); 1535 HWComposer::LayerListIterator cur = hwc.begin(id); 1536 const HWComposer::LayerListIterator end = hwc.end(id); 1537 1538 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1539 if (hasGlesComposition) { 1540 if (!DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext)) { 1541 ALOGW("DisplayDevice::makeCurrent failed. Aborting surface composition for display %s", 1542 hw->getDisplayName().string()); 1543 return; 1544 } 1545 1546 // set the frame buffer 1547 glMatrixMode(GL_MODELVIEW); 1548 glLoadIdentity(); 1549 1550 // Never touch the framebuffer if we don't have any framebuffer layers 1551 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1552 if (hasHwcComposition) { 1553 // when using overlays, we assume a fully transparent framebuffer 1554 // NOTE: we could reduce how much we need to clear, for instance 1555 // remove where there are opaque FB layers. however, on some 1556 // GPUs doing a "clean slate" glClear might be more efficient. 1557 // We'll revisit later if needed. 1558 glClearColor(0, 0, 0, 0); 1559 glClear(GL_COLOR_BUFFER_BIT); 1560 } else { 1561 // we start with the whole screen area 1562 const Region bounds(hw->getBounds()); 1563 1564 // we remove the scissor part 1565 // we're left with the letterbox region 1566 // (common case is that letterbox ends-up being empty) 1567 const Region letterbox(bounds.subtract(hw->getScissor())); 1568 1569 // compute the area to clear 1570 Region region(hw->undefinedRegion.merge(letterbox)); 1571 1572 // but limit it to the dirty region 1573 region.andSelf(dirty); 1574 1575 // screen is already cleared here 1576 if (!region.isEmpty()) { 1577 // can happen with SurfaceView 1578 drawWormhole(hw, region); 1579 } 1580 } 1581 1582 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 1583 // just to be on the safe side, we don't set the 1584 // scissor on the main display. It should never be needed 1585 // anyways (though in theory it could since the API allows it). 1586 const Rect& bounds(hw->getBounds()); 1587 const Rect& scissor(hw->getScissor()); 1588 if (scissor != bounds) { 1589 // scissor doesn't match the screen's dimensions, so we 1590 // need to clear everything outside of it and enable 1591 // the GL scissor so we don't draw anything where we shouldn't 1592 const GLint height = hw->getHeight(); 1593 glScissor(scissor.left, height - scissor.bottom, 1594 scissor.getWidth(), scissor.getHeight()); 1595 // enable scissor for this frame 1596 glEnable(GL_SCISSOR_TEST); 1597 } 1598 } 1599 } 1600 1601 /* 1602 * and then, render the layers targeted at the framebuffer 1603 */ 1604 1605 const Vector< sp<Layer> >& layers(hw->getVisibleLayersSortedByZ()); 1606 const size_t count = layers.size(); 1607 const Transform& tr = hw->getTransform(); 1608 if (cur != end) { 1609 // we're using h/w composer 1610 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1611 const sp<Layer>& layer(layers[i]); 1612 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1613 if (!clip.isEmpty()) { 1614 switch (cur->getCompositionType()) { 1615 case HWC_OVERLAY: { 1616 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1617 && i 1618 && layer->isOpaque() 1619 && hasGlesComposition) { 1620 // never clear the very first layer since we're 1621 // guaranteed the FB is already cleared 1622 layer->clearWithOpenGL(hw, clip); 1623 } 1624 break; 1625 } 1626 case HWC_FRAMEBUFFER: { 1627 layer->draw(hw, clip); 1628 break; 1629 } 1630 case HWC_FRAMEBUFFER_TARGET: { 1631 // this should not happen as the iterator shouldn't 1632 // let us get there. 1633 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1634 break; 1635 } 1636 } 1637 } 1638 layer->setAcquireFence(hw, *cur); 1639 } 1640 } else { 1641 // we're not using h/w composer 1642 for (size_t i=0 ; i<count ; ++i) { 1643 const sp<Layer>& layer(layers[i]); 1644 const Region clip(dirty.intersect( 1645 tr.transform(layer->visibleRegion))); 1646 if (!clip.isEmpty()) { 1647 layer->draw(hw, clip); 1648 } 1649 } 1650 } 1651 1652 // disable scissor at the end of the frame 1653 glDisable(GL_SCISSOR_TEST); 1654} 1655 1656void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1657 const Region& region) const 1658{ 1659 glDisable(GL_TEXTURE_EXTERNAL_OES); 1660 glDisable(GL_TEXTURE_2D); 1661 glDisable(GL_BLEND); 1662 glColor4f(0,0,0,0); 1663 1664 const int32_t height = hw->getHeight(); 1665 Region::const_iterator it = region.begin(); 1666 Region::const_iterator const end = region.end(); 1667 while (it != end) { 1668 const Rect& r = *it++; 1669 GLfloat vertices[][2] = { 1670 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 1671 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 1672 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 1673 { (GLfloat) r.right, (GLfloat) (height - r.top) } 1674 }; 1675 glVertexPointer(2, GL_FLOAT, 0, vertices); 1676 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1677 } 1678} 1679 1680void SurfaceFlinger::addClientLayer(const sp<Client>& client, 1681 const sp<IBinder>& handle, 1682 const sp<IGraphicBufferProducer>& gbc, 1683 const sp<Layer>& lbc) 1684{ 1685 // attach this layer to the client 1686 client->attachLayer(handle, lbc); 1687 1688 // add this layer to the current state list 1689 Mutex::Autolock _l(mStateLock); 1690 mCurrentState.layersSortedByZ.add(lbc); 1691 mGraphicBufferProducerList.add(gbc->asBinder()); 1692} 1693 1694status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) 1695{ 1696 Mutex::Autolock _l(mStateLock); 1697 ssize_t index = mCurrentState.layersSortedByZ.remove(layer); 1698 if (index >= 0) { 1699 mLayersPendingRemoval.push(layer); 1700 mLayersRemoved = true; 1701 setTransactionFlags(eTransactionNeeded); 1702 return NO_ERROR; 1703 } 1704 return status_t(index); 1705} 1706 1707uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1708{ 1709 return android_atomic_release_load(&mTransactionFlags); 1710} 1711 1712uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1713{ 1714 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1715} 1716 1717uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1718{ 1719 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1720 if ((old & flags)==0) { // wake the server up 1721 signalTransaction(); 1722 } 1723 return old; 1724} 1725 1726void SurfaceFlinger::setTransactionState( 1727 const Vector<ComposerState>& state, 1728 const Vector<DisplayState>& displays, 1729 uint32_t flags) 1730{ 1731 ATRACE_CALL(); 1732 Mutex::Autolock _l(mStateLock); 1733 uint32_t transactionFlags = 0; 1734 1735 if (flags & eAnimation) { 1736 // For window updates that are part of an animation we must wait for 1737 // previous animation "frames" to be handled. 1738 while (mAnimTransactionPending) { 1739 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1740 if (CC_UNLIKELY(err != NO_ERROR)) { 1741 // just in case something goes wrong in SF, return to the 1742 // caller after a few seconds. 1743 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1744 "waiting for previous animation frame"); 1745 mAnimTransactionPending = false; 1746 break; 1747 } 1748 } 1749 } 1750 1751 size_t count = displays.size(); 1752 for (size_t i=0 ; i<count ; i++) { 1753 const DisplayState& s(displays[i]); 1754 transactionFlags |= setDisplayStateLocked(s); 1755 } 1756 1757 count = state.size(); 1758 for (size_t i=0 ; i<count ; i++) { 1759 const ComposerState& s(state[i]); 1760 // Here we need to check that the interface we're given is indeed 1761 // one of our own. A malicious client could give us a NULL 1762 // IInterface, or one of its own or even one of our own but a 1763 // different type. All these situations would cause us to crash. 1764 // 1765 // NOTE: it would be better to use RTTI as we could directly check 1766 // that we have a Client*. however, RTTI is disabled in Android. 1767 if (s.client != NULL) { 1768 sp<IBinder> binder = s.client->asBinder(); 1769 if (binder != NULL) { 1770 String16 desc(binder->getInterfaceDescriptor()); 1771 if (desc == ISurfaceComposerClient::descriptor) { 1772 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1773 transactionFlags |= setClientStateLocked(client, s.state); 1774 } 1775 } 1776 } 1777 } 1778 1779 if (transactionFlags) { 1780 // this triggers the transaction 1781 setTransactionFlags(transactionFlags); 1782 1783 // if this is a synchronous transaction, wait for it to take effect 1784 // before returning. 1785 if (flags & eSynchronous) { 1786 mTransactionPending = true; 1787 } 1788 if (flags & eAnimation) { 1789 mAnimTransactionPending = true; 1790 } 1791 while (mTransactionPending) { 1792 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1793 if (CC_UNLIKELY(err != NO_ERROR)) { 1794 // just in case something goes wrong in SF, return to the 1795 // called after a few seconds. 1796 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1797 mTransactionPending = false; 1798 break; 1799 } 1800 } 1801 } 1802} 1803 1804uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1805{ 1806 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1807 if (dpyIdx < 0) 1808 return 0; 1809 1810 uint32_t flags = 0; 1811 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1812 if (disp.isValid()) { 1813 const uint32_t what = s.what; 1814 if (what & DisplayState::eSurfaceChanged) { 1815 if (disp.surface->asBinder() != s.surface->asBinder()) { 1816 disp.surface = s.surface; 1817 flags |= eDisplayTransactionNeeded; 1818 } 1819 } 1820 if (what & DisplayState::eLayerStackChanged) { 1821 if (disp.layerStack != s.layerStack) { 1822 disp.layerStack = s.layerStack; 1823 flags |= eDisplayTransactionNeeded; 1824 } 1825 } 1826 if (what & DisplayState::eDisplayProjectionChanged) { 1827 if (disp.orientation != s.orientation) { 1828 disp.orientation = s.orientation; 1829 flags |= eDisplayTransactionNeeded; 1830 } 1831 if (disp.frame != s.frame) { 1832 disp.frame = s.frame; 1833 flags |= eDisplayTransactionNeeded; 1834 } 1835 if (disp.viewport != s.viewport) { 1836 disp.viewport = s.viewport; 1837 flags |= eDisplayTransactionNeeded; 1838 } 1839 } 1840 } 1841 return flags; 1842} 1843 1844uint32_t SurfaceFlinger::setClientStateLocked( 1845 const sp<Client>& client, 1846 const layer_state_t& s) 1847{ 1848 uint32_t flags = 0; 1849 sp<Layer> layer(client->getLayerUser(s.surface)); 1850 if (layer != 0) { 1851 const uint32_t what = s.what; 1852 if (what & layer_state_t::ePositionChanged) { 1853 if (layer->setPosition(s.x, s.y)) 1854 flags |= eTraversalNeeded; 1855 } 1856 if (what & layer_state_t::eLayerChanged) { 1857 // NOTE: index needs to be calculated before we update the state 1858 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1859 if (layer->setLayer(s.z)) { 1860 mCurrentState.layersSortedByZ.removeAt(idx); 1861 mCurrentState.layersSortedByZ.add(layer); 1862 // we need traversal (state changed) 1863 // AND transaction (list changed) 1864 flags |= eTransactionNeeded|eTraversalNeeded; 1865 } 1866 } 1867 if (what & layer_state_t::eSizeChanged) { 1868 if (layer->setSize(s.w, s.h)) { 1869 flags |= eTraversalNeeded; 1870 } 1871 } 1872 if (what & layer_state_t::eAlphaChanged) { 1873 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1874 flags |= eTraversalNeeded; 1875 } 1876 if (what & layer_state_t::eMatrixChanged) { 1877 if (layer->setMatrix(s.matrix)) 1878 flags |= eTraversalNeeded; 1879 } 1880 if (what & layer_state_t::eTransparentRegionChanged) { 1881 if (layer->setTransparentRegionHint(s.transparentRegion)) 1882 flags |= eTraversalNeeded; 1883 } 1884 if (what & layer_state_t::eVisibilityChanged) { 1885 if (layer->setFlags(s.flags, s.mask)) 1886 flags |= eTraversalNeeded; 1887 } 1888 if (what & layer_state_t::eCropChanged) { 1889 if (layer->setCrop(s.crop)) 1890 flags |= eTraversalNeeded; 1891 } 1892 if (what & layer_state_t::eLayerStackChanged) { 1893 // NOTE: index needs to be calculated before we update the state 1894 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1895 if (layer->setLayerStack(s.layerStack)) { 1896 mCurrentState.layersSortedByZ.removeAt(idx); 1897 mCurrentState.layersSortedByZ.add(layer); 1898 // we need traversal (state changed) 1899 // AND transaction (list changed) 1900 flags |= eTransactionNeeded|eTraversalNeeded; 1901 } 1902 } 1903 } 1904 return flags; 1905} 1906 1907status_t SurfaceFlinger::createLayer( 1908 const String8& name, 1909 const sp<Client>& client, 1910 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 1911 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp) 1912{ 1913 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1914 if (int32_t(w|h) < 0) { 1915 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1916 int(w), int(h)); 1917 return BAD_VALUE; 1918 } 1919 1920 status_t result = NO_ERROR; 1921 1922 sp<Layer> layer; 1923 1924 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1925 case ISurfaceComposerClient::eFXSurfaceNormal: 1926 result = createNormalLayer(client, 1927 name, w, h, flags, format, 1928 handle, gbp, &layer); 1929 break; 1930 case ISurfaceComposerClient::eFXSurfaceDim: 1931 result = createDimLayer(client, 1932 name, w, h, flags, 1933 handle, gbp, &layer); 1934 break; 1935 default: 1936 result = BAD_VALUE; 1937 break; 1938 } 1939 1940 if (result == NO_ERROR) { 1941 addClientLayer(client, *handle, *gbp, layer); 1942 setTransactionFlags(eTransactionNeeded); 1943 } 1944 return result; 1945} 1946 1947status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client, 1948 const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 1949 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1950{ 1951 // initialize the surfaces 1952 switch (format) { 1953 case PIXEL_FORMAT_TRANSPARENT: 1954 case PIXEL_FORMAT_TRANSLUCENT: 1955 format = PIXEL_FORMAT_RGBA_8888; 1956 break; 1957 case PIXEL_FORMAT_OPAQUE: 1958#ifdef NO_RGBX_8888 1959 format = PIXEL_FORMAT_RGB_565; 1960#else 1961 format = PIXEL_FORMAT_RGBX_8888; 1962#endif 1963 break; 1964 } 1965 1966#ifdef NO_RGBX_8888 1967 if (format == PIXEL_FORMAT_RGBX_8888) 1968 format = PIXEL_FORMAT_RGBA_8888; 1969#endif 1970 1971 *outLayer = new Layer(this, client, name, w, h, flags); 1972 status_t err = (*outLayer)->setBuffers(w, h, format, flags); 1973 if (err == NO_ERROR) { 1974 *handle = (*outLayer)->getHandle(); 1975 *gbp = (*outLayer)->getBufferQueue(); 1976 } 1977 1978 ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); 1979 return err; 1980} 1981 1982status_t SurfaceFlinger::createDimLayer(const sp<Client>& client, 1983 const String8& name, uint32_t w, uint32_t h, uint32_t flags, 1984 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1985{ 1986 *outLayer = new LayerDim(this, client, name, w, h, flags); 1987 *handle = (*outLayer)->getHandle(); 1988 *gbp = (*outLayer)->getBufferQueue(); 1989 return NO_ERROR; 1990} 1991 1992status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle) 1993{ 1994 // called by the window manager when it wants to remove a Layer 1995 status_t err = NO_ERROR; 1996 sp<Layer> l(client->getLayerUser(handle)); 1997 if (l != NULL) { 1998 err = removeLayer(l); 1999 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 2000 "error removing layer=%p (%s)", l.get(), strerror(-err)); 2001 } 2002 return err; 2003} 2004 2005status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer) 2006{ 2007 // called by ~LayerCleaner() when all references to the IBinder (handle) 2008 // are gone 2009 status_t err = NO_ERROR; 2010 sp<Layer> l(layer.promote()); 2011 if (l != NULL) { 2012 err = removeLayer(l); 2013 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 2014 "error removing layer=%p (%s)", l.get(), strerror(-err)); 2015 } 2016 return err; 2017} 2018 2019// --------------------------------------------------------------------------- 2020 2021void SurfaceFlinger::onInitializeDisplays() { 2022 // reset screen orientation and use primary layer stack 2023 Vector<ComposerState> state; 2024 Vector<DisplayState> displays; 2025 DisplayState d; 2026 d.what = DisplayState::eDisplayProjectionChanged | 2027 DisplayState::eLayerStackChanged; 2028 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2029 d.layerStack = 0; 2030 d.orientation = DisplayState::eOrientationDefault; 2031 d.frame.makeInvalid(); 2032 d.viewport.makeInvalid(); 2033 displays.add(d); 2034 setTransactionState(state, displays, 0); 2035 onScreenAcquired(getDefaultDisplayDevice()); 2036} 2037 2038void SurfaceFlinger::initializeDisplays() { 2039 class MessageScreenInitialized : public MessageBase { 2040 SurfaceFlinger* flinger; 2041 public: 2042 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2043 virtual bool handler() { 2044 flinger->onInitializeDisplays(); 2045 return true; 2046 } 2047 }; 2048 sp<MessageBase> msg = new MessageScreenInitialized(this); 2049 postMessageAsync(msg); // we may be called from main thread, use async message 2050} 2051 2052 2053void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2054 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2055 if (hw->isScreenAcquired()) { 2056 // this is expected, e.g. when power manager wakes up during boot 2057 ALOGD(" screen was previously acquired"); 2058 return; 2059 } 2060 2061 hw->acquireScreen(); 2062 int32_t type = hw->getDisplayType(); 2063 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2064 // built-in display, tell the HWC 2065 getHwComposer().acquire(type); 2066 2067 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2068 // FIXME: eventthread only knows about the main display right now 2069 mEventThread->onScreenAcquired(); 2070 } 2071 } 2072 mVisibleRegionsDirty = true; 2073 repaintEverything(); 2074} 2075 2076void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2077 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2078 if (!hw->isScreenAcquired()) { 2079 ALOGD(" screen was previously released"); 2080 return; 2081 } 2082 2083 hw->releaseScreen(); 2084 int32_t type = hw->getDisplayType(); 2085 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2086 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2087 // FIXME: eventthread only knows about the main display right now 2088 mEventThread->onScreenReleased(); 2089 } 2090 2091 // built-in display, tell the HWC 2092 getHwComposer().release(type); 2093 } 2094 mVisibleRegionsDirty = true; 2095 // from this point on, SF will stop drawing on this display 2096} 2097 2098void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2099 class MessageScreenAcquired : public MessageBase { 2100 SurfaceFlinger& mFlinger; 2101 sp<IBinder> mDisplay; 2102 public: 2103 MessageScreenAcquired(SurfaceFlinger& flinger, 2104 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2105 virtual bool handler() { 2106 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2107 if (hw == NULL) { 2108 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2109 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2110 ALOGW("Attempt to unblank virtual display"); 2111 } else { 2112 mFlinger.onScreenAcquired(hw); 2113 } 2114 return true; 2115 } 2116 }; 2117 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2118 postMessageSync(msg); 2119} 2120 2121void SurfaceFlinger::blank(const sp<IBinder>& display) { 2122 class MessageScreenReleased : public MessageBase { 2123 SurfaceFlinger& mFlinger; 2124 sp<IBinder> mDisplay; 2125 public: 2126 MessageScreenReleased(SurfaceFlinger& flinger, 2127 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2128 virtual bool handler() { 2129 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2130 if (hw == NULL) { 2131 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2132 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2133 ALOGW("Attempt to blank virtual display"); 2134 } else { 2135 mFlinger.onScreenReleased(hw); 2136 } 2137 return true; 2138 } 2139 }; 2140 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2141 postMessageSync(msg); 2142} 2143 2144// --------------------------------------------------------------------------- 2145 2146status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2147{ 2148 const size_t SIZE = 4096; 2149 char buffer[SIZE]; 2150 String8 result; 2151 2152 2153 IPCThreadState* ipc = IPCThreadState::self(); 2154 const int pid = ipc->getCallingPid(); 2155 const int uid = ipc->getCallingUid(); 2156 if ((uid != AID_SHELL) && 2157 !PermissionCache::checkPermission(sDump, pid, uid)) { 2158 snprintf(buffer, SIZE, "Permission Denial: " 2159 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", pid, uid); 2160 result.append(buffer); 2161 } else { 2162 // Try to get the main lock, but don't insist if we can't 2163 // (this would indicate SF is stuck, but we want to be able to 2164 // print something in dumpsys). 2165 int retry = 3; 2166 while (mStateLock.tryLock()<0 && --retry>=0) { 2167 usleep(1000000); 2168 } 2169 const bool locked(retry >= 0); 2170 if (!locked) { 2171 snprintf(buffer, SIZE, 2172 "SurfaceFlinger appears to be unresponsive, " 2173 "dumping anyways (no locks held)\n"); 2174 result.append(buffer); 2175 } 2176 2177 bool dumpAll = true; 2178 size_t index = 0; 2179 size_t numArgs = args.size(); 2180 if (numArgs) { 2181 if ((index < numArgs) && 2182 (args[index] == String16("--list"))) { 2183 index++; 2184 listLayersLocked(args, index, result, buffer, SIZE); 2185 dumpAll = false; 2186 } 2187 2188 if ((index < numArgs) && 2189 (args[index] == String16("--latency"))) { 2190 index++; 2191 dumpStatsLocked(args, index, result, buffer, SIZE); 2192 dumpAll = false; 2193 } 2194 2195 if ((index < numArgs) && 2196 (args[index] == String16("--latency-clear"))) { 2197 index++; 2198 clearStatsLocked(args, index, result, buffer, SIZE); 2199 dumpAll = false; 2200 } 2201 } 2202 2203 if (dumpAll) { 2204 dumpAllLocked(result, buffer, SIZE); 2205 } 2206 2207 if (locked) { 2208 mStateLock.unlock(); 2209 } 2210 } 2211 write(fd, result.string(), result.size()); 2212 return NO_ERROR; 2213} 2214 2215void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2216 String8& result, char* buffer, size_t SIZE) const 2217{ 2218 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2219 const size_t count = currentLayers.size(); 2220 for (size_t i=0 ; i<count ; i++) { 2221 const sp<Layer>& layer(currentLayers[i]); 2222 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2223 result.append(buffer); 2224 } 2225} 2226 2227void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2228 String8& result, char* buffer, size_t SIZE) const 2229{ 2230 String8 name; 2231 if (index < args.size()) { 2232 name = String8(args[index]); 2233 index++; 2234 } 2235 2236 const nsecs_t period = 2237 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 2238 result.appendFormat("%lld\n", period); 2239 2240 if (name.isEmpty()) { 2241 mAnimFrameTracker.dump(result); 2242 } else { 2243 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2244 const size_t count = currentLayers.size(); 2245 for (size_t i=0 ; i<count ; i++) { 2246 const sp<Layer>& layer(currentLayers[i]); 2247 if (name == layer->getName()) { 2248 layer->dumpStats(result, buffer, SIZE); 2249 } 2250 } 2251 } 2252} 2253 2254void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2255 String8& result, char* buffer, size_t SIZE) 2256{ 2257 String8 name; 2258 if (index < args.size()) { 2259 name = String8(args[index]); 2260 index++; 2261 } 2262 2263 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2264 const size_t count = currentLayers.size(); 2265 for (size_t i=0 ; i<count ; i++) { 2266 const sp<Layer>& layer(currentLayers[i]); 2267 if (name.isEmpty() || (name == layer->getName())) { 2268 layer->clearStats(); 2269 } 2270 } 2271 2272 mAnimFrameTracker.clear(); 2273} 2274 2275/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2276{ 2277 static const char* config = 2278 " [sf" 2279#ifdef NO_RGBX_8888 2280 " NO_RGBX_8888" 2281#endif 2282#ifdef HAS_CONTEXT_PRIORITY 2283 " HAS_CONTEXT_PRIORITY" 2284#endif 2285#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2286 " NEVER_DEFAULT_TO_ASYNC_MODE" 2287#endif 2288#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2289 " TARGET_DISABLE_TRIPLE_BUFFERING" 2290#endif 2291 "]"; 2292 result.append(config); 2293} 2294 2295void SurfaceFlinger::dumpAllLocked( 2296 String8& result, char* buffer, size_t SIZE) const 2297{ 2298 // figure out if we're stuck somewhere 2299 const nsecs_t now = systemTime(); 2300 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2301 const nsecs_t inTransaction(mDebugInTransaction); 2302 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2303 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2304 2305 /* 2306 * Dump library configuration. 2307 */ 2308 result.append("Build configuration:"); 2309 appendSfConfigString(result); 2310 appendUiConfigString(result); 2311 appendGuiConfigString(result); 2312 result.append("\n"); 2313 2314 result.append("Sync configuration: "); 2315 result.append(SyncFeatures::getInstance().toString()); 2316 result.append("\n"); 2317 2318 /* 2319 * Dump the visible layer list 2320 */ 2321 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2322 const size_t count = currentLayers.size(); 2323 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2324 result.append(buffer); 2325 for (size_t i=0 ; i<count ; i++) { 2326 const sp<Layer>& layer(currentLayers[i]); 2327 layer->dump(result, buffer, SIZE); 2328 } 2329 2330 /* 2331 * Dump Display state 2332 */ 2333 2334 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2335 result.append(buffer); 2336 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2337 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2338 hw->dump(result, buffer, SIZE); 2339 } 2340 2341 /* 2342 * Dump SurfaceFlinger global state 2343 */ 2344 2345 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2346 result.append(buffer); 2347 2348 HWComposer& hwc(getHwComposer()); 2349 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2350 const GLExtensions& extensions(GLExtensions::getInstance()); 2351 2352 snprintf(buffer, SIZE, "EGL implementation : %s\n", 2353 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_VERSION)); 2354 result.append(buffer); 2355 snprintf(buffer, SIZE, "%s\n", 2356 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_EXTENSIONS)); 2357 result.append(buffer); 2358 2359 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2360 extensions.getVendor(), 2361 extensions.getRenderer(), 2362 extensions.getVersion()); 2363 result.append(buffer); 2364 snprintf(buffer, SIZE, "%s\n", extensions.getExtension()); 2365 result.append(buffer); 2366 2367 hw->undefinedRegion.dump(result, "undefinedRegion"); 2368 snprintf(buffer, SIZE, 2369 " orientation=%d, canDraw=%d\n", 2370 hw->getOrientation(), hw->canDraw()); 2371 result.append(buffer); 2372 snprintf(buffer, SIZE, 2373 " last eglSwapBuffers() time: %f us\n" 2374 " last transaction time : %f us\n" 2375 " transaction-flags : %08x\n" 2376 " refresh-rate : %f fps\n" 2377 " x-dpi : %f\n" 2378 " y-dpi : %f\n" 2379 " EGL_NATIVE_VISUAL_ID : %d\n" 2380 " gpu_to_cpu_unsupported : %d\n" 2381 , 2382 mLastSwapBufferTime/1000.0, 2383 mLastTransactionTime/1000.0, 2384 mTransactionFlags, 2385 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2386 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2387 hwc.getDpiY(HWC_DISPLAY_PRIMARY), 2388 mEGLNativeVisualId, 2389 !mGpuToCpuSupported); 2390 result.append(buffer); 2391 2392 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2393 inSwapBuffersDuration/1000.0); 2394 result.append(buffer); 2395 2396 snprintf(buffer, SIZE, " transaction time: %f us\n", 2397 inTransactionDuration/1000.0); 2398 result.append(buffer); 2399 2400 /* 2401 * VSYNC state 2402 */ 2403 mEventThread->dump(result, buffer, SIZE); 2404 2405 /* 2406 * Dump HWComposer state 2407 */ 2408 snprintf(buffer, SIZE, "h/w composer state:\n"); 2409 result.append(buffer); 2410 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2411 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2412 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2413 result.append(buffer); 2414 hwc.dump(result, buffer, SIZE); 2415 2416 /* 2417 * Dump gralloc state 2418 */ 2419 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2420 alloc.dump(result); 2421} 2422 2423const Vector< sp<Layer> >& 2424SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { 2425 // Note: mStateLock is held here 2426 wp<IBinder> dpy; 2427 for (size_t i=0 ; i<mDisplays.size() ; i++) { 2428 if (mDisplays.valueAt(i)->getHwcDisplayId() == id) { 2429 dpy = mDisplays.keyAt(i); 2430 break; 2431 } 2432 } 2433 if (dpy == NULL) { 2434 ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); 2435 // Just use the primary display so we have something to return 2436 dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); 2437 } 2438 return getDisplayDevice(dpy)->getVisibleLayersSortedByZ(); 2439} 2440 2441bool SurfaceFlinger::startDdmConnection() 2442{ 2443 void* libddmconnection_dso = 2444 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2445 if (!libddmconnection_dso) { 2446 return false; 2447 } 2448 void (*DdmConnection_start)(const char* name); 2449 DdmConnection_start = 2450 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2451 if (!DdmConnection_start) { 2452 dlclose(libddmconnection_dso); 2453 return false; 2454 } 2455 (*DdmConnection_start)(getServiceName()); 2456 return true; 2457} 2458 2459status_t SurfaceFlinger::onTransact( 2460 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2461{ 2462 switch (code) { 2463 case CREATE_CONNECTION: 2464 case CREATE_DISPLAY: 2465 case SET_TRANSACTION_STATE: 2466 case BOOT_FINISHED: 2467 case BLANK: 2468 case UNBLANK: 2469 { 2470 // codes that require permission check 2471 IPCThreadState* ipc = IPCThreadState::self(); 2472 const int pid = ipc->getCallingPid(); 2473 const int uid = ipc->getCallingUid(); 2474 if ((uid != AID_GRAPHICS) && 2475 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2476 ALOGE("Permission Denial: " 2477 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2478 return PERMISSION_DENIED; 2479 } 2480 break; 2481 } 2482 case CAPTURE_SCREEN: 2483 { 2484 // codes that require permission check 2485 IPCThreadState* ipc = IPCThreadState::self(); 2486 const int pid = ipc->getCallingPid(); 2487 const int uid = ipc->getCallingUid(); 2488 if ((uid != AID_GRAPHICS) && 2489 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2490 ALOGE("Permission Denial: " 2491 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2492 return PERMISSION_DENIED; 2493 } 2494 break; 2495 } 2496 } 2497 2498 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2499 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2500 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2501 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2502 IPCThreadState* ipc = IPCThreadState::self(); 2503 const int pid = ipc->getCallingPid(); 2504 const int uid = ipc->getCallingUid(); 2505 ALOGE("Permission Denial: " 2506 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2507 return PERMISSION_DENIED; 2508 } 2509 int n; 2510 switch (code) { 2511 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2512 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2513 return NO_ERROR; 2514 case 1002: // SHOW_UPDATES 2515 n = data.readInt32(); 2516 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2517 invalidateHwcGeometry(); 2518 repaintEverything(); 2519 return NO_ERROR; 2520 case 1004:{ // repaint everything 2521 repaintEverything(); 2522 return NO_ERROR; 2523 } 2524 case 1005:{ // force transaction 2525 setTransactionFlags( 2526 eTransactionNeeded| 2527 eDisplayTransactionNeeded| 2528 eTraversalNeeded); 2529 return NO_ERROR; 2530 } 2531 case 1006:{ // send empty update 2532 signalRefresh(); 2533 return NO_ERROR; 2534 } 2535 case 1008: // toggle use of hw composer 2536 n = data.readInt32(); 2537 mDebugDisableHWC = n ? 1 : 0; 2538 invalidateHwcGeometry(); 2539 repaintEverything(); 2540 return NO_ERROR; 2541 case 1009: // toggle use of transform hint 2542 n = data.readInt32(); 2543 mDebugDisableTransformHint = n ? 1 : 0; 2544 invalidateHwcGeometry(); 2545 repaintEverything(); 2546 return NO_ERROR; 2547 case 1010: // interrogate. 2548 reply->writeInt32(0); 2549 reply->writeInt32(0); 2550 reply->writeInt32(mDebugRegion); 2551 reply->writeInt32(0); 2552 reply->writeInt32(mDebugDisableHWC); 2553 return NO_ERROR; 2554 case 1013: { 2555 Mutex::Autolock _l(mStateLock); 2556 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2557 reply->writeInt32(hw->getPageFlipCount()); 2558 } 2559 return NO_ERROR; 2560 } 2561 } 2562 return err; 2563} 2564 2565void SurfaceFlinger::repaintEverything() { 2566 android_atomic_or(1, &mRepaintEverything); 2567 signalTransaction(); 2568} 2569 2570// --------------------------------------------------------------------------- 2571// Capture screen into an IGraphiBufferProducer 2572// --------------------------------------------------------------------------- 2573 2574status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2575 const sp<IGraphicBufferProducer>& producer, 2576 uint32_t reqWidth, uint32_t reqHeight, 2577 uint32_t minLayerZ, uint32_t maxLayerZ, 2578 bool isCpuConsumer) { 2579 2580 if (CC_UNLIKELY(display == 0)) 2581 return BAD_VALUE; 2582 2583 if (CC_UNLIKELY(producer == 0)) 2584 return BAD_VALUE; 2585 2586 class MessageCaptureScreen : public MessageBase { 2587 SurfaceFlinger* flinger; 2588 sp<IBinder> display; 2589 sp<IGraphicBufferProducer> producer; 2590 uint32_t reqWidth, reqHeight; 2591 uint32_t minLayerZ,maxLayerZ; 2592 bool isCpuConsumer; 2593 status_t result; 2594 public: 2595 MessageCaptureScreen(SurfaceFlinger* flinger, 2596 const sp<IBinder>& display, 2597 const sp<IGraphicBufferProducer>& producer, 2598 uint32_t reqWidth, uint32_t reqHeight, 2599 uint32_t minLayerZ, uint32_t maxLayerZ, bool isCpuConsumer) 2600 : flinger(flinger), display(display), producer(producer), 2601 reqWidth(reqWidth), reqHeight(reqHeight), 2602 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2603 isCpuConsumer(isCpuConsumer), 2604 result(PERMISSION_DENIED) 2605 { 2606 } 2607 status_t getResult() const { 2608 return result; 2609 } 2610 virtual bool handler() { 2611 Mutex::Autolock _l(flinger->mStateLock); 2612 sp<const DisplayDevice> hw(flinger->getDisplayDevice(display)); 2613 2614 bool useReadPixels = false; 2615 if (isCpuConsumer) { 2616 bool formatSupportedBytBitmap = 2617 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBA_8888) || 2618 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBX_8888); 2619 if (formatSupportedBytBitmap == false) { 2620 // the pixel format we have is not compatible with 2621 // Bitmap.java, which is the likely client of this API, 2622 // so we just revert to glReadPixels() in that case. 2623 useReadPixels = true; 2624 } 2625 if (flinger->mGpuToCpuSupported == false) { 2626 // When we know the GL->CPU path works, we can call 2627 // captureScreenImplLocked() directly, instead of using the 2628 // glReadPixels() workaround. 2629 useReadPixels = true; 2630 } 2631 } 2632 2633 if (!useReadPixels) { 2634 result = flinger->captureScreenImplLocked(hw, 2635 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2636 } else { 2637 result = flinger->captureScreenImplCpuConsumerLocked(hw, 2638 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2639 } 2640 return true; 2641 } 2642 }; 2643 2644 // make sure to process transactions before screenshots -- a transaction 2645 // might already be pending but scheduled for VSYNC; this guarantees we 2646 // will handle it before the screenshot. When VSYNC finally arrives 2647 // the scheduled transaction will be a no-op. If no transactions are 2648 // scheduled at this time, this will end-up being a no-op as well. 2649 mEventQueue.invalidateTransactionNow(); 2650 2651 sp<MessageBase> msg = new MessageCaptureScreen(this, 2652 display, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ, 2653 isCpuConsumer); 2654 status_t res = postMessageSync(msg); 2655 if (res == NO_ERROR) { 2656 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2657 } 2658 return res; 2659} 2660 2661 2662void SurfaceFlinger::renderScreenImplLocked( 2663 const sp<const DisplayDevice>& hw, 2664 uint32_t reqWidth, uint32_t reqHeight, 2665 uint32_t minLayerZ, uint32_t maxLayerZ, 2666 bool yswap) 2667{ 2668 ATRACE_CALL(); 2669 2670 // get screen geometry 2671 const uint32_t hw_w = hw->getWidth(); 2672 const uint32_t hw_h = hw->getHeight(); 2673 2674 const bool filtering = reqWidth != hw_w || reqWidth != hw_h; 2675 2676 // make sure to clear all GL error flags 2677 while ( glGetError() != GL_NO_ERROR ) ; 2678 2679 // set-up our viewport 2680 glViewport(0, 0, reqWidth, reqHeight); 2681 glMatrixMode(GL_PROJECTION); 2682 glLoadIdentity(); 2683 if (yswap) glOrthof(0, hw_w, hw_h, 0, 0, 1); 2684 else glOrthof(0, hw_w, 0, hw_h, 0, 1); 2685 glMatrixMode(GL_MODELVIEW); 2686 glLoadIdentity(); 2687 2688 // redraw the screen entirely... 2689 glDisable(GL_SCISSOR_TEST); 2690 glClearColor(0,0,0,1); 2691 glClear(GL_COLOR_BUFFER_BIT); 2692 glDisable(GL_TEXTURE_EXTERNAL_OES); 2693 glDisable(GL_TEXTURE_2D); 2694 2695 const LayerVector& layers( mDrawingState.layersSortedByZ ); 2696 const size_t count = layers.size(); 2697 for (size_t i=0 ; i<count ; ++i) { 2698 const sp<Layer>& layer(layers[i]); 2699 const Layer::State& state(layer->drawingState()); 2700 if (state.layerStack == hw->getLayerStack()) { 2701 if (state.z >= minLayerZ && state.z <= maxLayerZ) { 2702 if (layer->isVisible()) { 2703 if (filtering) layer->setFiltering(true); 2704 layer->draw(hw); 2705 if (filtering) layer->setFiltering(false); 2706 } 2707 } 2708 } 2709 } 2710 2711 // compositionComplete is needed for older driver 2712 hw->compositionComplete(); 2713} 2714 2715 2716status_t SurfaceFlinger::captureScreenImplLocked( 2717 const sp<const DisplayDevice>& hw, 2718 const sp<IGraphicBufferProducer>& producer, 2719 uint32_t reqWidth, uint32_t reqHeight, 2720 uint32_t minLayerZ, uint32_t maxLayerZ) 2721{ 2722 ATRACE_CALL(); 2723 2724 // get screen geometry 2725 const uint32_t hw_w = hw->getWidth(); 2726 const uint32_t hw_h = hw->getHeight(); 2727 2728 // if we have secure windows on this display, never allow the screen capture 2729 if (hw->getSecureLayerVisible()) { 2730 ALOGW("FB is protected: PERMISSION_DENIED"); 2731 return PERMISSION_DENIED; 2732 } 2733 2734 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2735 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2736 reqWidth, reqHeight, hw_w, hw_h); 2737 return BAD_VALUE; 2738 } 2739 2740 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2741 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2742 2743 // Create a surface to render into 2744 sp<Surface> surface = new Surface(producer); 2745 ANativeWindow* const window = surface.get(); 2746 2747 // set the buffer size to what the user requested 2748 native_window_set_buffers_user_dimensions(window, reqWidth, reqHeight); 2749 2750 // and create the corresponding EGLSurface 2751 EGLSurface eglSurface = eglCreateWindowSurface( 2752 mEGLDisplay, mEGLConfig, window, NULL); 2753 if (eglSurface == EGL_NO_SURFACE) { 2754 ALOGE("captureScreenImplLocked: eglCreateWindowSurface() failed 0x%4x", 2755 eglGetError()); 2756 return BAD_VALUE; 2757 } 2758 2759 if (!eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) { 2760 ALOGE("captureScreenImplLocked: eglMakeCurrent() failed 0x%4x", 2761 eglGetError()); 2762 eglDestroySurface(mEGLDisplay, eglSurface); 2763 return BAD_VALUE; 2764 } 2765 2766 renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, false); 2767 2768 // and finishing things up... 2769 if (eglSwapBuffers(mEGLDisplay, eglSurface) != EGL_TRUE) { 2770 ALOGE("captureScreenImplLocked: eglSwapBuffers() failed 0x%4x", 2771 eglGetError()); 2772 eglDestroySurface(mEGLDisplay, eglSurface); 2773 return BAD_VALUE; 2774 } 2775 2776 eglDestroySurface(mEGLDisplay, eglSurface); 2777 2778 return NO_ERROR; 2779} 2780 2781 2782status_t SurfaceFlinger::captureScreenImplCpuConsumerLocked( 2783 const sp<const DisplayDevice>& hw, 2784 const sp<IGraphicBufferProducer>& producer, 2785 uint32_t reqWidth, uint32_t reqHeight, 2786 uint32_t minLayerZ, uint32_t maxLayerZ) 2787{ 2788 ATRACE_CALL(); 2789 2790 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2791 return INVALID_OPERATION; 2792 } 2793 2794 // get screen geometry 2795 const uint32_t hw_w = hw->getWidth(); 2796 const uint32_t hw_h = hw->getHeight(); 2797 2798 // if we have secure windows on this display, never allow the screen capture 2799 if (hw->getSecureLayerVisible()) { 2800 ALOGW("FB is protected: PERMISSION_DENIED"); 2801 return PERMISSION_DENIED; 2802 } 2803 2804 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2805 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2806 reqWidth, reqHeight, hw_w, hw_h); 2807 return BAD_VALUE; 2808 } 2809 2810 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2811 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2812 2813 GLuint tname; 2814 glGenRenderbuffersOES(1, &tname); 2815 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2816 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, reqWidth, reqHeight); 2817 2818 // create a FBO 2819 GLuint name; 2820 glGenFramebuffersOES(1, &name); 2821 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2822 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2823 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2824 2825 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2826 2827 status_t result = NO_ERROR; 2828 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2829 2830 renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, true); 2831 2832 // Below we render the screenshot into the 2833 // CpuConsumer using glReadPixels from our FBO. 2834 // Some older drivers don't support the GL->CPU path so we 2835 // have to wrap it with a CPU->CPU path, which is what 2836 // glReadPixels essentially is. 2837 2838 sp<Surface> sur = new Surface(producer); 2839 ANativeWindow* window = sur.get(); 2840 2841 if (native_window_api_connect(window, NATIVE_WINDOW_API_CPU) == NO_ERROR) { 2842 int err = 0; 2843 err = native_window_set_buffers_dimensions(window, reqWidth, reqHeight); 2844 err |= native_window_set_buffers_format(window, HAL_PIXEL_FORMAT_RGBA_8888); 2845 err |= native_window_set_usage(window, 2846 GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN); 2847 2848 if (err == NO_ERROR) { 2849 ANativeWindowBuffer* buffer; 2850 if (native_window_dequeue_buffer_and_wait(window, &buffer) == NO_ERROR) { 2851 sp<GraphicBuffer> buf = static_cast<GraphicBuffer*>(buffer); 2852 void* vaddr; 2853 if (buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, &vaddr) == NO_ERROR) { 2854 glReadPixels(0, 0, buffer->stride, reqHeight, 2855 GL_RGBA, GL_UNSIGNED_BYTE, vaddr); 2856 buf->unlock(); 2857 } 2858 window->queueBuffer(window, buffer, -1); 2859 } 2860 } 2861 native_window_api_disconnect(window, NATIVE_WINDOW_API_CPU); 2862 } 2863 2864 } else { 2865 ALOGE("got GL_FRAMEBUFFER_COMPLETE_OES while taking screenshot"); 2866 result = INVALID_OPERATION; 2867 } 2868 2869 // back to main framebuffer 2870 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2871 glDeleteRenderbuffersOES(1, &tname); 2872 glDeleteFramebuffersOES(1, &name); 2873 2874 DisplayDevice::setViewportAndProjection(hw); 2875 2876 return result; 2877} 2878 2879// --------------------------------------------------------------------------- 2880 2881SurfaceFlinger::LayerVector::LayerVector() { 2882} 2883 2884SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2885 : SortedVector<sp<Layer> >(rhs) { 2886} 2887 2888int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2889 const void* rhs) const 2890{ 2891 // sort layers per layer-stack, then by z-order and finally by sequence 2892 const sp<Layer>& l(*reinterpret_cast<const sp<Layer>*>(lhs)); 2893 const sp<Layer>& r(*reinterpret_cast<const sp<Layer>*>(rhs)); 2894 2895 uint32_t ls = l->currentState().layerStack; 2896 uint32_t rs = r->currentState().layerStack; 2897 if (ls != rs) 2898 return ls - rs; 2899 2900 uint32_t lz = l->currentState().z; 2901 uint32_t rz = r->currentState().z; 2902 if (lz != rz) 2903 return lz - rz; 2904 2905 return l->sequence - r->sequence; 2906} 2907 2908// --------------------------------------------------------------------------- 2909 2910SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2911 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2912} 2913 2914SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2915 : type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) { 2916 viewport.makeInvalid(); 2917 frame.makeInvalid(); 2918} 2919 2920// --------------------------------------------------------------------------- 2921 2922}; // namespace android 2923