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 74 EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name); 75 76 namespace android { 77 // --------------------------------------------------------------------------- 78 79 const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 80 const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 81 const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 82 const String16 sDump("android.permission.DUMP"); 83 84 // --------------------------------------------------------------------------- 85 86 SurfaceFlinger::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 } 129 130 void 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 } 139 140 141 SurfaceFlinger::~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 } 147 148 void 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 } 158 159 sp<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 } 169 170 sp<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 } 197 198 void 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 } 207 208 sp<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 } 215 216 sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 217 { 218 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 219 return gba; 220 } 221 222 void 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 } 241 242 void 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 } 256 257 status_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 } 290 291 class 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 }; 324 public: 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 }; 342 343 EGLConfig 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; 393 394 success: 395 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 396 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 397 return config; 398 } 399 400 EGLContext 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 } 415 416 void 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 } 473 474 status_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 } 557 558 int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 559 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 560 type : mHwc->allocateDisplayId(); 561 } 562 563 void SurfaceFlinger::startBootAnim() { 564 // start boot animation 565 property_set("service.bootanim.exit", "0"); 566 property_set("ctl.start", "bootanim"); 567 } 568 569 uint32_t SurfaceFlinger::getMaxTextureSize() const { 570 return mMaxTextureSize; 571 } 572 573 uint32_t SurfaceFlinger::getMaxViewportDims() const { 574 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 575 mMaxViewportDims[0] : mMaxViewportDims[1]; 576 } 577 578 // ---------------------------------------------------------------------------- 579 580 bool 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 } 586 587 status_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 // ---------------------------------------------------------------------------- 661 662 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 663 return mEventThread->createEventConnection(); 664 } 665 666 // ---------------------------------------------------------------------------- 667 668 void SurfaceFlinger::waitForEvent() { 669 mEventQueue.waitMessage(); 670 } 671 672 void SurfaceFlinger::signalTransaction() { 673 mEventQueue.invalidate(); 674 } 675 676 void SurfaceFlinger::signalLayerUpdate() { 677 mEventQueue.invalidate(); 678 } 679 680 void SurfaceFlinger::signalRefresh() { 681 mEventQueue.refresh(); 682 } 683 684 status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 685 nsecs_t reltime, uint32_t flags) { 686 return mEventQueue.postMessage(msg, reltime); 687 } 688 689 status_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 } 697 698 bool SurfaceFlinger::threadLoop() { 699 waitForEvent(); 700 return true; 701 } 702 703 void 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 } 716 717 void 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 } 739 740 void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 741 getHwComposer().eventControl(disp, event, enabled); 742 } 743 744 void 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 } 760 761 void SurfaceFlinger::handleMessageTransaction() { 762 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 763 if (transactionFlags) { 764 handleTransaction(transactionFlags); 765 } 766 } 767 768 void SurfaceFlinger::handleMessageInvalidate() { 769 ATRACE_CALL(); 770 handlePageFlip(); 771 } 772 773 void SurfaceFlinger::handleMessageRefresh() { 774 ATRACE_CALL(); 775 preComposition(); 776 rebuildLayerStacks(); 777 setUpHWComposer(); 778 doDebugFlashRegions(); 779 doComposition(); 780 postComposition(); 781 } 782 783 void 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 } 836 837 void 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 } 851 852 void 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 } 876 877 void 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 } 917 918 void 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 } 971 972 void 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 } 993 994 void 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 1036 void 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 1059 void 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 1302 void 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 1322 void 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 1461 void 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 1471 void 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 1488 void SurfaceFlinger::invalidateHwcGeometry() 1489 { 1490 mHwWorkListDirty = true; 1491 } 1492 1493 1494 void 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 1531 void 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 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1541 1542 // set the frame buffer 1543 glMatrixMode(GL_MODELVIEW); 1544 glLoadIdentity(); 1545 1546 // Never touch the framebuffer if we don't have any framebuffer layers 1547 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1548 if (hasHwcComposition) { 1549 // when using overlays, we assume a fully transparent framebuffer 1550 // NOTE: we could reduce how much we need to clear, for instance 1551 // remove where there are opaque FB layers. however, on some 1552 // GPUs doing a "clean slate" glClear might be more efficient. 1553 // We'll revisit later if needed. 1554 glClearColor(0, 0, 0, 0); 1555 glClear(GL_COLOR_BUFFER_BIT); 1556 } else { 1557 // we start with the whole screen area 1558 const Region bounds(hw->getBounds()); 1559 1560 // we remove the scissor part 1561 // we're left with the letterbox region 1562 // (common case is that letterbox ends-up being empty) 1563 const Region letterbox(bounds.subtract(hw->getScissor())); 1564 1565 // compute the area to clear 1566 Region region(hw->undefinedRegion.merge(letterbox)); 1567 1568 // but limit it to the dirty region 1569 region.andSelf(dirty); 1570 1571 // screen is already cleared here 1572 if (!region.isEmpty()) { 1573 // can happen with SurfaceView 1574 drawWormhole(hw, region); 1575 } 1576 } 1577 1578 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 1579 // just to be on the safe side, we don't set the 1580 // scissor on the main display. It should never be needed 1581 // anyways (though in theory it could since the API allows it). 1582 const Rect& bounds(hw->getBounds()); 1583 const Rect& scissor(hw->getScissor()); 1584 if (scissor != bounds) { 1585 // scissor doesn't match the screen's dimensions, so we 1586 // need to clear everything outside of it and enable 1587 // the GL scissor so we don't draw anything where we shouldn't 1588 const GLint height = hw->getHeight(); 1589 glScissor(scissor.left, height - scissor.bottom, 1590 scissor.getWidth(), scissor.getHeight()); 1591 // enable scissor for this frame 1592 glEnable(GL_SCISSOR_TEST); 1593 } 1594 } 1595 } 1596 1597 /* 1598 * and then, render the layers targeted at the framebuffer 1599 */ 1600 1601 const Vector< sp<Layer> >& layers(hw->getVisibleLayersSortedByZ()); 1602 const size_t count = layers.size(); 1603 const Transform& tr = hw->getTransform(); 1604 if (cur != end) { 1605 // we're using h/w composer 1606 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1607 const sp<Layer>& layer(layers[i]); 1608 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1609 if (!clip.isEmpty()) { 1610 switch (cur->getCompositionType()) { 1611 case HWC_OVERLAY: { 1612 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1613 && i 1614 && layer->isOpaque() 1615 && hasGlesComposition) { 1616 // never clear the very first layer since we're 1617 // guaranteed the FB is already cleared 1618 layer->clearWithOpenGL(hw, clip); 1619 } 1620 break; 1621 } 1622 case HWC_FRAMEBUFFER: { 1623 layer->draw(hw, clip); 1624 break; 1625 } 1626 case HWC_FRAMEBUFFER_TARGET: { 1627 // this should not happen as the iterator shouldn't 1628 // let us get there. 1629 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1630 break; 1631 } 1632 } 1633 } 1634 layer->setAcquireFence(hw, *cur); 1635 } 1636 } else { 1637 // we're not using h/w composer 1638 for (size_t i=0 ; i<count ; ++i) { 1639 const sp<Layer>& layer(layers[i]); 1640 const Region clip(dirty.intersect( 1641 tr.transform(layer->visibleRegion))); 1642 if (!clip.isEmpty()) { 1643 layer->draw(hw, clip); 1644 } 1645 } 1646 } 1647 1648 // disable scissor at the end of the frame 1649 glDisable(GL_SCISSOR_TEST); 1650 } 1651 1652 void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1653 const Region& region) const 1654 { 1655 glDisable(GL_TEXTURE_EXTERNAL_OES); 1656 glDisable(GL_TEXTURE_2D); 1657 glDisable(GL_BLEND); 1658 glColor4f(0,0,0,0); 1659 1660 const int32_t height = hw->getHeight(); 1661 Region::const_iterator it = region.begin(); 1662 Region::const_iterator const end = region.end(); 1663 while (it != end) { 1664 const Rect& r = *it++; 1665 GLfloat vertices[][2] = { 1666 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 1667 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 1668 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 1669 { (GLfloat) r.right, (GLfloat) (height - r.top) } 1670 }; 1671 glVertexPointer(2, GL_FLOAT, 0, vertices); 1672 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1673 } 1674 } 1675 1676 void SurfaceFlinger::addClientLayer(const sp<Client>& client, 1677 const sp<IBinder>& handle, 1678 const sp<IGraphicBufferProducer>& gbc, 1679 const sp<Layer>& lbc) 1680 { 1681 // attach this layer to the client 1682 client->attachLayer(handle, lbc); 1683 1684 // add this layer to the current state list 1685 Mutex::Autolock _l(mStateLock); 1686 mCurrentState.layersSortedByZ.add(lbc); 1687 mGraphicBufferProducerList.add(gbc->asBinder()); 1688 } 1689 1690 status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) 1691 { 1692 Mutex::Autolock _l(mStateLock); 1693 ssize_t index = mCurrentState.layersSortedByZ.remove(layer); 1694 if (index >= 0) { 1695 mLayersPendingRemoval.push(layer); 1696 mLayersRemoved = true; 1697 setTransactionFlags(eTransactionNeeded); 1698 return NO_ERROR; 1699 } 1700 return status_t(index); 1701 } 1702 1703 uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1704 { 1705 return android_atomic_release_load(&mTransactionFlags); 1706 } 1707 1708 uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1709 { 1710 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1711 } 1712 1713 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1714 { 1715 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1716 if ((old & flags)==0) { // wake the server up 1717 signalTransaction(); 1718 } 1719 return old; 1720 } 1721 1722 void SurfaceFlinger::setTransactionState( 1723 const Vector<ComposerState>& state, 1724 const Vector<DisplayState>& displays, 1725 uint32_t flags) 1726 { 1727 ATRACE_CALL(); 1728 Mutex::Autolock _l(mStateLock); 1729 uint32_t transactionFlags = 0; 1730 1731 if (flags & eAnimation) { 1732 // For window updates that are part of an animation we must wait for 1733 // previous animation "frames" to be handled. 1734 while (mAnimTransactionPending) { 1735 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1736 if (CC_UNLIKELY(err != NO_ERROR)) { 1737 // just in case something goes wrong in SF, return to the 1738 // caller after a few seconds. 1739 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1740 "waiting for previous animation frame"); 1741 mAnimTransactionPending = false; 1742 break; 1743 } 1744 } 1745 } 1746 1747 size_t count = displays.size(); 1748 for (size_t i=0 ; i<count ; i++) { 1749 const DisplayState& s(displays[i]); 1750 transactionFlags |= setDisplayStateLocked(s); 1751 } 1752 1753 count = state.size(); 1754 for (size_t i=0 ; i<count ; i++) { 1755 const ComposerState& s(state[i]); 1756 // Here we need to check that the interface we're given is indeed 1757 // one of our own. A malicious client could give us a NULL 1758 // IInterface, or one of its own or even one of our own but a 1759 // different type. All these situations would cause us to crash. 1760 // 1761 // NOTE: it would be better to use RTTI as we could directly check 1762 // that we have a Client*. however, RTTI is disabled in Android. 1763 if (s.client != NULL) { 1764 sp<IBinder> binder = s.client->asBinder(); 1765 if (binder != NULL) { 1766 String16 desc(binder->getInterfaceDescriptor()); 1767 if (desc == ISurfaceComposerClient::descriptor) { 1768 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1769 transactionFlags |= setClientStateLocked(client, s.state); 1770 } 1771 } 1772 } 1773 } 1774 1775 if (transactionFlags) { 1776 // this triggers the transaction 1777 setTransactionFlags(transactionFlags); 1778 1779 // if this is a synchronous transaction, wait for it to take effect 1780 // before returning. 1781 if (flags & eSynchronous) { 1782 mTransactionPending = true; 1783 } 1784 if (flags & eAnimation) { 1785 mAnimTransactionPending = true; 1786 } 1787 while (mTransactionPending) { 1788 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1789 if (CC_UNLIKELY(err != NO_ERROR)) { 1790 // just in case something goes wrong in SF, return to the 1791 // called after a few seconds. 1792 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1793 mTransactionPending = false; 1794 break; 1795 } 1796 } 1797 } 1798 } 1799 1800 uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1801 { 1802 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1803 if (dpyIdx < 0) 1804 return 0; 1805 1806 uint32_t flags = 0; 1807 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1808 if (disp.isValid()) { 1809 const uint32_t what = s.what; 1810 if (what & DisplayState::eSurfaceChanged) { 1811 if (disp.surface->asBinder() != s.surface->asBinder()) { 1812 disp.surface = s.surface; 1813 flags |= eDisplayTransactionNeeded; 1814 } 1815 } 1816 if (what & DisplayState::eLayerStackChanged) { 1817 if (disp.layerStack != s.layerStack) { 1818 disp.layerStack = s.layerStack; 1819 flags |= eDisplayTransactionNeeded; 1820 } 1821 } 1822 if (what & DisplayState::eDisplayProjectionChanged) { 1823 if (disp.orientation != s.orientation) { 1824 disp.orientation = s.orientation; 1825 flags |= eDisplayTransactionNeeded; 1826 } 1827 if (disp.frame != s.frame) { 1828 disp.frame = s.frame; 1829 flags |= eDisplayTransactionNeeded; 1830 } 1831 if (disp.viewport != s.viewport) { 1832 disp.viewport = s.viewport; 1833 flags |= eDisplayTransactionNeeded; 1834 } 1835 } 1836 } 1837 return flags; 1838 } 1839 1840 uint32_t SurfaceFlinger::setClientStateLocked( 1841 const sp<Client>& client, 1842 const layer_state_t& s) 1843 { 1844 uint32_t flags = 0; 1845 sp<Layer> layer(client->getLayerUser(s.surface)); 1846 if (layer != 0) { 1847 const uint32_t what = s.what; 1848 if (what & layer_state_t::ePositionChanged) { 1849 if (layer->setPosition(s.x, s.y)) 1850 flags |= eTraversalNeeded; 1851 } 1852 if (what & layer_state_t::eLayerChanged) { 1853 // NOTE: index needs to be calculated before we update the state 1854 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1855 if (layer->setLayer(s.z)) { 1856 mCurrentState.layersSortedByZ.removeAt(idx); 1857 mCurrentState.layersSortedByZ.add(layer); 1858 // we need traversal (state changed) 1859 // AND transaction (list changed) 1860 flags |= eTransactionNeeded|eTraversalNeeded; 1861 } 1862 } 1863 if (what & layer_state_t::eSizeChanged) { 1864 if (layer->setSize(s.w, s.h)) { 1865 flags |= eTraversalNeeded; 1866 } 1867 } 1868 if (what & layer_state_t::eAlphaChanged) { 1869 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1870 flags |= eTraversalNeeded; 1871 } 1872 if (what & layer_state_t::eMatrixChanged) { 1873 if (layer->setMatrix(s.matrix)) 1874 flags |= eTraversalNeeded; 1875 } 1876 if (what & layer_state_t::eTransparentRegionChanged) { 1877 if (layer->setTransparentRegionHint(s.transparentRegion)) 1878 flags |= eTraversalNeeded; 1879 } 1880 if (what & layer_state_t::eVisibilityChanged) { 1881 if (layer->setFlags(s.flags, s.mask)) 1882 flags |= eTraversalNeeded; 1883 } 1884 if (what & layer_state_t::eCropChanged) { 1885 if (layer->setCrop(s.crop)) 1886 flags |= eTraversalNeeded; 1887 } 1888 if (what & layer_state_t::eLayerStackChanged) { 1889 // NOTE: index needs to be calculated before we update the state 1890 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1891 if (layer->setLayerStack(s.layerStack)) { 1892 mCurrentState.layersSortedByZ.removeAt(idx); 1893 mCurrentState.layersSortedByZ.add(layer); 1894 // we need traversal (state changed) 1895 // AND transaction (list changed) 1896 flags |= eTransactionNeeded|eTraversalNeeded; 1897 } 1898 } 1899 } 1900 return flags; 1901 } 1902 1903 status_t SurfaceFlinger::createLayer( 1904 const String8& name, 1905 const sp<Client>& client, 1906 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 1907 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp) 1908 { 1909 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1910 if (int32_t(w|h) < 0) { 1911 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1912 int(w), int(h)); 1913 return BAD_VALUE; 1914 } 1915 1916 status_t result = NO_ERROR; 1917 1918 sp<Layer> layer; 1919 1920 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1921 case ISurfaceComposerClient::eFXSurfaceNormal: 1922 result = createNormalLayer(client, 1923 name, w, h, flags, format, 1924 handle, gbp, &layer); 1925 break; 1926 case ISurfaceComposerClient::eFXSurfaceDim: 1927 result = createDimLayer(client, 1928 name, w, h, flags, 1929 handle, gbp, &layer); 1930 break; 1931 default: 1932 result = BAD_VALUE; 1933 break; 1934 } 1935 1936 if (result == NO_ERROR) { 1937 addClientLayer(client, *handle, *gbp, layer); 1938 setTransactionFlags(eTransactionNeeded); 1939 } 1940 return result; 1941 } 1942 1943 status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client, 1944 const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 1945 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1946 { 1947 // initialize the surfaces 1948 switch (format) { 1949 case PIXEL_FORMAT_TRANSPARENT: 1950 case PIXEL_FORMAT_TRANSLUCENT: 1951 format = PIXEL_FORMAT_RGBA_8888; 1952 break; 1953 case PIXEL_FORMAT_OPAQUE: 1954 #ifdef NO_RGBX_8888 1955 format = PIXEL_FORMAT_RGB_565; 1956 #else 1957 format = PIXEL_FORMAT_RGBX_8888; 1958 #endif 1959 break; 1960 } 1961 1962 #ifdef NO_RGBX_8888 1963 if (format == PIXEL_FORMAT_RGBX_8888) 1964 format = PIXEL_FORMAT_RGBA_8888; 1965 #endif 1966 1967 *outLayer = new Layer(this, client, name, w, h, flags); 1968 status_t err = (*outLayer)->setBuffers(w, h, format, flags); 1969 if (err == NO_ERROR) { 1970 *handle = (*outLayer)->getHandle(); 1971 *gbp = (*outLayer)->getBufferQueue(); 1972 } 1973 1974 ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); 1975 return err; 1976 } 1977 1978 status_t SurfaceFlinger::createDimLayer(const sp<Client>& client, 1979 const String8& name, uint32_t w, uint32_t h, uint32_t flags, 1980 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1981 { 1982 *outLayer = new LayerDim(this, client, name, w, h, flags); 1983 *handle = (*outLayer)->getHandle(); 1984 *gbp = (*outLayer)->getBufferQueue(); 1985 return NO_ERROR; 1986 } 1987 1988 status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle) 1989 { 1990 // called by the window manager when it wants to remove a Layer 1991 status_t err = NO_ERROR; 1992 sp<Layer> l(client->getLayerUser(handle)); 1993 if (l != NULL) { 1994 err = removeLayer(l); 1995 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1996 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1997 } 1998 return err; 1999 } 2000 2001 status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer) 2002 { 2003 // called by ~LayerCleaner() when all references to the IBinder (handle) 2004 // are gone 2005 status_t err = NO_ERROR; 2006 sp<Layer> l(layer.promote()); 2007 if (l != NULL) { 2008 err = removeLayer(l); 2009 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 2010 "error removing layer=%p (%s)", l.get(), strerror(-err)); 2011 } 2012 return err; 2013 } 2014 2015 // --------------------------------------------------------------------------- 2016 2017 void SurfaceFlinger::onInitializeDisplays() { 2018 // reset screen orientation and use primary layer stack 2019 Vector<ComposerState> state; 2020 Vector<DisplayState> displays; 2021 DisplayState d; 2022 d.what = DisplayState::eDisplayProjectionChanged | 2023 DisplayState::eLayerStackChanged; 2024 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2025 d.layerStack = 0; 2026 d.orientation = DisplayState::eOrientationDefault; 2027 d.frame.makeInvalid(); 2028 d.viewport.makeInvalid(); 2029 displays.add(d); 2030 setTransactionState(state, displays, 0); 2031 onScreenAcquired(getDefaultDisplayDevice()); 2032 } 2033 2034 void SurfaceFlinger::initializeDisplays() { 2035 class MessageScreenInitialized : public MessageBase { 2036 SurfaceFlinger* flinger; 2037 public: 2038 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2039 virtual bool handler() { 2040 flinger->onInitializeDisplays(); 2041 return true; 2042 } 2043 }; 2044 sp<MessageBase> msg = new MessageScreenInitialized(this); 2045 postMessageAsync(msg); // we may be called from main thread, use async message 2046 } 2047 2048 2049 void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2050 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2051 if (hw->isScreenAcquired()) { 2052 // this is expected, e.g. when power manager wakes up during boot 2053 ALOGD(" screen was previously acquired"); 2054 return; 2055 } 2056 2057 hw->acquireScreen(); 2058 int32_t type = hw->getDisplayType(); 2059 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2060 // built-in display, tell the HWC 2061 getHwComposer().acquire(type); 2062 2063 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2064 // FIXME: eventthread only knows about the main display right now 2065 mEventThread->onScreenAcquired(); 2066 } 2067 } 2068 mVisibleRegionsDirty = true; 2069 repaintEverything(); 2070 } 2071 2072 void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2073 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2074 if (!hw->isScreenAcquired()) { 2075 ALOGD(" screen was previously released"); 2076 return; 2077 } 2078 2079 hw->releaseScreen(); 2080 int32_t type = hw->getDisplayType(); 2081 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2082 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2083 // FIXME: eventthread only knows about the main display right now 2084 mEventThread->onScreenReleased(); 2085 } 2086 2087 // built-in display, tell the HWC 2088 getHwComposer().release(type); 2089 } 2090 mVisibleRegionsDirty = true; 2091 // from this point on, SF will stop drawing on this display 2092 } 2093 2094 void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2095 class MessageScreenAcquired : public MessageBase { 2096 SurfaceFlinger& mFlinger; 2097 sp<IBinder> mDisplay; 2098 public: 2099 MessageScreenAcquired(SurfaceFlinger& flinger, 2100 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2101 virtual bool handler() { 2102 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2103 if (hw == NULL) { 2104 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2105 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2106 ALOGW("Attempt to unblank virtual display"); 2107 } else { 2108 mFlinger.onScreenAcquired(hw); 2109 } 2110 return true; 2111 } 2112 }; 2113 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2114 postMessageSync(msg); 2115 } 2116 2117 void SurfaceFlinger::blank(const sp<IBinder>& display) { 2118 class MessageScreenReleased : public MessageBase { 2119 SurfaceFlinger& mFlinger; 2120 sp<IBinder> mDisplay; 2121 public: 2122 MessageScreenReleased(SurfaceFlinger& flinger, 2123 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2124 virtual bool handler() { 2125 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2126 if (hw == NULL) { 2127 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2128 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2129 ALOGW("Attempt to blank virtual display"); 2130 } else { 2131 mFlinger.onScreenReleased(hw); 2132 } 2133 return true; 2134 } 2135 }; 2136 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2137 postMessageSync(msg); 2138 } 2139 2140 // --------------------------------------------------------------------------- 2141 2142 status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2143 { 2144 const size_t SIZE = 4096; 2145 char buffer[SIZE]; 2146 String8 result; 2147 2148 2149 IPCThreadState* ipc = IPCThreadState::self(); 2150 const int pid = ipc->getCallingPid(); 2151 const int uid = ipc->getCallingUid(); 2152 if ((uid != AID_SHELL) && 2153 !PermissionCache::checkPermission(sDump, pid, uid)) { 2154 snprintf(buffer, SIZE, "Permission Denial: " 2155 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", pid, uid); 2156 result.append(buffer); 2157 } else { 2158 // Try to get the main lock, but don't insist if we can't 2159 // (this would indicate SF is stuck, but we want to be able to 2160 // print something in dumpsys). 2161 int retry = 3; 2162 while (mStateLock.tryLock()<0 && --retry>=0) { 2163 usleep(1000000); 2164 } 2165 const bool locked(retry >= 0); 2166 if (!locked) { 2167 snprintf(buffer, SIZE, 2168 "SurfaceFlinger appears to be unresponsive, " 2169 "dumping anyways (no locks held)\n"); 2170 result.append(buffer); 2171 } 2172 2173 bool dumpAll = true; 2174 size_t index = 0; 2175 size_t numArgs = args.size(); 2176 if (numArgs) { 2177 if ((index < numArgs) && 2178 (args[index] == String16("--list"))) { 2179 index++; 2180 listLayersLocked(args, index, result, buffer, SIZE); 2181 dumpAll = false; 2182 } 2183 2184 if ((index < numArgs) && 2185 (args[index] == String16("--latency"))) { 2186 index++; 2187 dumpStatsLocked(args, index, result, buffer, SIZE); 2188 dumpAll = false; 2189 } 2190 2191 if ((index < numArgs) && 2192 (args[index] == String16("--latency-clear"))) { 2193 index++; 2194 clearStatsLocked(args, index, result, buffer, SIZE); 2195 dumpAll = false; 2196 } 2197 } 2198 2199 if (dumpAll) { 2200 dumpAllLocked(result, buffer, SIZE); 2201 } 2202 2203 if (locked) { 2204 mStateLock.unlock(); 2205 } 2206 } 2207 write(fd, result.string(), result.size()); 2208 return NO_ERROR; 2209 } 2210 2211 void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2212 String8& result, char* buffer, size_t SIZE) const 2213 { 2214 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2215 const size_t count = currentLayers.size(); 2216 for (size_t i=0 ; i<count ; i++) { 2217 const sp<Layer>& layer(currentLayers[i]); 2218 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2219 result.append(buffer); 2220 } 2221 } 2222 2223 void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2224 String8& result, char* buffer, size_t SIZE) const 2225 { 2226 String8 name; 2227 if (index < args.size()) { 2228 name = String8(args[index]); 2229 index++; 2230 } 2231 2232 const nsecs_t period = 2233 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 2234 result.appendFormat("%lld\n", period); 2235 2236 if (name.isEmpty()) { 2237 mAnimFrameTracker.dump(result); 2238 } else { 2239 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2240 const size_t count = currentLayers.size(); 2241 for (size_t i=0 ; i<count ; i++) { 2242 const sp<Layer>& layer(currentLayers[i]); 2243 if (name == layer->getName()) { 2244 layer->dumpStats(result, buffer, SIZE); 2245 } 2246 } 2247 } 2248 } 2249 2250 void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2251 String8& result, char* buffer, size_t SIZE) 2252 { 2253 String8 name; 2254 if (index < args.size()) { 2255 name = String8(args[index]); 2256 index++; 2257 } 2258 2259 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2260 const size_t count = currentLayers.size(); 2261 for (size_t i=0 ; i<count ; i++) { 2262 const sp<Layer>& layer(currentLayers[i]); 2263 if (name.isEmpty() || (name == layer->getName())) { 2264 layer->clearStats(); 2265 } 2266 } 2267 2268 mAnimFrameTracker.clear(); 2269 } 2270 2271 /*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2272 { 2273 static const char* config = 2274 " [sf" 2275 #ifdef NO_RGBX_8888 2276 " NO_RGBX_8888" 2277 #endif 2278 #ifdef HAS_CONTEXT_PRIORITY 2279 " HAS_CONTEXT_PRIORITY" 2280 #endif 2281 #ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2282 " NEVER_DEFAULT_TO_ASYNC_MODE" 2283 #endif 2284 #ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2285 " TARGET_DISABLE_TRIPLE_BUFFERING" 2286 #endif 2287 "]"; 2288 result.append(config); 2289 } 2290 2291 void SurfaceFlinger::dumpAllLocked( 2292 String8& result, char* buffer, size_t SIZE) const 2293 { 2294 // figure out if we're stuck somewhere 2295 const nsecs_t now = systemTime(); 2296 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2297 const nsecs_t inTransaction(mDebugInTransaction); 2298 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2299 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2300 2301 /* 2302 * Dump library configuration. 2303 */ 2304 result.append("Build configuration:"); 2305 appendSfConfigString(result); 2306 appendUiConfigString(result); 2307 appendGuiConfigString(result); 2308 result.append("\n"); 2309 2310 result.append("Sync configuration: "); 2311 result.append(SyncFeatures::getInstance().toString()); 2312 result.append("\n"); 2313 2314 /* 2315 * Dump the visible layer list 2316 */ 2317 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2318 const size_t count = currentLayers.size(); 2319 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2320 result.append(buffer); 2321 for (size_t i=0 ; i<count ; i++) { 2322 const sp<Layer>& layer(currentLayers[i]); 2323 layer->dump(result, buffer, SIZE); 2324 } 2325 2326 /* 2327 * Dump Display state 2328 */ 2329 2330 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2331 result.append(buffer); 2332 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2333 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2334 hw->dump(result, buffer, SIZE); 2335 } 2336 2337 /* 2338 * Dump SurfaceFlinger global state 2339 */ 2340 2341 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2342 result.append(buffer); 2343 2344 HWComposer& hwc(getHwComposer()); 2345 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2346 const GLExtensions& extensions(GLExtensions::getInstance()); 2347 2348 snprintf(buffer, SIZE, "EGL implementation : %s\n", 2349 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_VERSION)); 2350 result.append(buffer); 2351 snprintf(buffer, SIZE, "%s\n", 2352 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_EXTENSIONS)); 2353 result.append(buffer); 2354 2355 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2356 extensions.getVendor(), 2357 extensions.getRenderer(), 2358 extensions.getVersion()); 2359 result.append(buffer); 2360 snprintf(buffer, SIZE, "%s\n", extensions.getExtension()); 2361 result.append(buffer); 2362 2363 hw->undefinedRegion.dump(result, "undefinedRegion"); 2364 snprintf(buffer, SIZE, 2365 " orientation=%d, canDraw=%d\n", 2366 hw->getOrientation(), hw->canDraw()); 2367 result.append(buffer); 2368 snprintf(buffer, SIZE, 2369 " last eglSwapBuffers() time: %f us\n" 2370 " last transaction time : %f us\n" 2371 " transaction-flags : %08x\n" 2372 " refresh-rate : %f fps\n" 2373 " x-dpi : %f\n" 2374 " y-dpi : %f\n" 2375 " EGL_NATIVE_VISUAL_ID : %d\n" 2376 " gpu_to_cpu_unsupported : %d\n" 2377 , 2378 mLastSwapBufferTime/1000.0, 2379 mLastTransactionTime/1000.0, 2380 mTransactionFlags, 2381 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2382 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2383 hwc.getDpiY(HWC_DISPLAY_PRIMARY), 2384 mEGLNativeVisualId, 2385 !mGpuToCpuSupported); 2386 result.append(buffer); 2387 2388 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2389 inSwapBuffersDuration/1000.0); 2390 result.append(buffer); 2391 2392 snprintf(buffer, SIZE, " transaction time: %f us\n", 2393 inTransactionDuration/1000.0); 2394 result.append(buffer); 2395 2396 /* 2397 * VSYNC state 2398 */ 2399 mEventThread->dump(result, buffer, SIZE); 2400 2401 /* 2402 * Dump HWComposer state 2403 */ 2404 snprintf(buffer, SIZE, "h/w composer state:\n"); 2405 result.append(buffer); 2406 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2407 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2408 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2409 result.append(buffer); 2410 hwc.dump(result, buffer, SIZE); 2411 2412 /* 2413 * Dump gralloc state 2414 */ 2415 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2416 alloc.dump(result); 2417 } 2418 2419 const Vector< sp<Layer> >& 2420 SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { 2421 // Note: mStateLock is held here 2422 wp<IBinder> dpy; 2423 for (size_t i=0 ; i<mDisplays.size() ; i++) { 2424 if (mDisplays.valueAt(i)->getHwcDisplayId() == id) { 2425 dpy = mDisplays.keyAt(i); 2426 break; 2427 } 2428 } 2429 if (dpy == NULL) { 2430 ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); 2431 // Just use the primary display so we have something to return 2432 dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); 2433 } 2434 return getDisplayDevice(dpy)->getVisibleLayersSortedByZ(); 2435 } 2436 2437 bool SurfaceFlinger::startDdmConnection() 2438 { 2439 void* libddmconnection_dso = 2440 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2441 if (!libddmconnection_dso) { 2442 return false; 2443 } 2444 void (*DdmConnection_start)(const char* name); 2445 DdmConnection_start = 2446 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2447 if (!DdmConnection_start) { 2448 dlclose(libddmconnection_dso); 2449 return false; 2450 } 2451 (*DdmConnection_start)(getServiceName()); 2452 return true; 2453 } 2454 2455 status_t SurfaceFlinger::onTransact( 2456 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2457 { 2458 switch (code) { 2459 case CREATE_CONNECTION: 2460 case CREATE_DISPLAY: 2461 case SET_TRANSACTION_STATE: 2462 case BOOT_FINISHED: 2463 case BLANK: 2464 case UNBLANK: 2465 { 2466 // codes that require permission check 2467 IPCThreadState* ipc = IPCThreadState::self(); 2468 const int pid = ipc->getCallingPid(); 2469 const int uid = ipc->getCallingUid(); 2470 if ((uid != AID_GRAPHICS) && 2471 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2472 ALOGE("Permission Denial: " 2473 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2474 return PERMISSION_DENIED; 2475 } 2476 break; 2477 } 2478 case CAPTURE_SCREEN: 2479 { 2480 // codes that require permission check 2481 IPCThreadState* ipc = IPCThreadState::self(); 2482 const int pid = ipc->getCallingPid(); 2483 const int uid = ipc->getCallingUid(); 2484 if ((uid != AID_GRAPHICS) && 2485 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2486 ALOGE("Permission Denial: " 2487 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2488 return PERMISSION_DENIED; 2489 } 2490 break; 2491 } 2492 } 2493 2494 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2495 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2496 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2497 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2498 IPCThreadState* ipc = IPCThreadState::self(); 2499 const int pid = ipc->getCallingPid(); 2500 const int uid = ipc->getCallingUid(); 2501 ALOGE("Permission Denial: " 2502 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2503 return PERMISSION_DENIED; 2504 } 2505 int n; 2506 switch (code) { 2507 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2508 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2509 return NO_ERROR; 2510 case 1002: // SHOW_UPDATES 2511 n = data.readInt32(); 2512 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2513 invalidateHwcGeometry(); 2514 repaintEverything(); 2515 return NO_ERROR; 2516 case 1004:{ // repaint everything 2517 repaintEverything(); 2518 return NO_ERROR; 2519 } 2520 case 1005:{ // force transaction 2521 setTransactionFlags( 2522 eTransactionNeeded| 2523 eDisplayTransactionNeeded| 2524 eTraversalNeeded); 2525 return NO_ERROR; 2526 } 2527 case 1006:{ // send empty update 2528 signalRefresh(); 2529 return NO_ERROR; 2530 } 2531 case 1008: // toggle use of hw composer 2532 n = data.readInt32(); 2533 mDebugDisableHWC = n ? 1 : 0; 2534 invalidateHwcGeometry(); 2535 repaintEverything(); 2536 return NO_ERROR; 2537 case 1009: // toggle use of transform hint 2538 n = data.readInt32(); 2539 mDebugDisableTransformHint = n ? 1 : 0; 2540 invalidateHwcGeometry(); 2541 repaintEverything(); 2542 return NO_ERROR; 2543 case 1010: // interrogate. 2544 reply->writeInt32(0); 2545 reply->writeInt32(0); 2546 reply->writeInt32(mDebugRegion); 2547 reply->writeInt32(0); 2548 reply->writeInt32(mDebugDisableHWC); 2549 return NO_ERROR; 2550 case 1013: { 2551 Mutex::Autolock _l(mStateLock); 2552 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2553 reply->writeInt32(hw->getPageFlipCount()); 2554 } 2555 return NO_ERROR; 2556 } 2557 } 2558 return err; 2559 } 2560 2561 void SurfaceFlinger::repaintEverything() { 2562 android_atomic_or(1, &mRepaintEverything); 2563 signalTransaction(); 2564 } 2565 2566 // --------------------------------------------------------------------------- 2567 // Capture screen into an IGraphiBufferProducer 2568 // --------------------------------------------------------------------------- 2569 2570 /* The code below is here to handle b/8734824 2571 * 2572 * We create a IGraphicBufferProducer wrapper that forwards all calls 2573 * to the calling binder thread, where they are executed. This allows 2574 * the calling thread to be reused (on the other side) and not 2575 * depend on having "enough" binder threads to handle the requests. 2576 * 2577 */ 2578 2579 class GraphicProducerWrapper : public BBinder, public MessageHandler { 2580 sp<IGraphicBufferProducer> impl; 2581 sp<Looper> looper; 2582 status_t result; 2583 bool exitPending; 2584 bool exitRequested; 2585 mutable Barrier barrier; 2586 volatile int32_t memoryBarrier; 2587 uint32_t code; 2588 Parcel const* data; 2589 Parcel* reply; 2590 2591 enum { 2592 MSG_API_CALL, 2593 MSG_EXIT 2594 }; 2595 2596 /* 2597 * this is called by our "fake" BpGraphicBufferProducer. We package the 2598 * data and reply Parcel and forward them to the calling thread. 2599 */ 2600 virtual status_t transact(uint32_t code, 2601 const Parcel& data, Parcel* reply, uint32_t flags) { 2602 this->code = code; 2603 this->data = &data; 2604 this->reply = reply; 2605 android_atomic_acquire_store(0, &memoryBarrier); 2606 if (exitPending) { 2607 // if we've exited, we run the message synchronously right here 2608 handleMessage(Message(MSG_API_CALL)); 2609 } else { 2610 barrier.close(); 2611 looper->sendMessage(this, Message(MSG_API_CALL)); 2612 barrier.wait(); 2613 } 2614 return NO_ERROR; 2615 } 2616 2617 /* 2618 * here we run on the binder calling thread. All we've got to do is 2619 * call the real BpGraphicBufferProducer. 2620 */ 2621 virtual void handleMessage(const Message& message) { 2622 android_atomic_release_load(&memoryBarrier); 2623 if (message.what == MSG_API_CALL) { 2624 impl->asBinder()->transact(code, data[0], reply); 2625 barrier.open(); 2626 } else if (message.what == MSG_EXIT) { 2627 exitRequested = true; 2628 } 2629 } 2630 2631 public: 2632 GraphicProducerWrapper(const sp<IGraphicBufferProducer>& impl) : 2633 impl(impl), looper(new Looper(true)), result(NO_ERROR), 2634 exitPending(false), exitRequested(false) { 2635 } 2636 2637 status_t waitForResponse() { 2638 do { 2639 looper->pollOnce(-1); 2640 } while (!exitRequested); 2641 return result; 2642 } 2643 2644 void exit(status_t result) { 2645 exitPending = true; 2646 looper->sendMessage(this, Message(MSG_EXIT)); 2647 } 2648 }; 2649 2650 status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2651 const sp<IGraphicBufferProducer>& producer, 2652 uint32_t reqWidth, uint32_t reqHeight, 2653 uint32_t minLayerZ, uint32_t maxLayerZ, 2654 bool isCpuConsumer) { 2655 2656 if (CC_UNLIKELY(display == 0)) 2657 return BAD_VALUE; 2658 2659 if (CC_UNLIKELY(producer == 0)) 2660 return BAD_VALUE; 2661 2662 2663 class MessageCaptureScreen : public MessageBase { 2664 SurfaceFlinger* flinger; 2665 sp<IBinder> display; 2666 sp<IGraphicBufferProducer> producer; 2667 uint32_t reqWidth, reqHeight; 2668 uint32_t minLayerZ,maxLayerZ; 2669 bool useReadPixels; 2670 status_t result; 2671 public: 2672 MessageCaptureScreen(SurfaceFlinger* flinger, 2673 const sp<IBinder>& display, 2674 const sp<IGraphicBufferProducer>& producer, 2675 uint32_t reqWidth, uint32_t reqHeight, 2676 uint32_t minLayerZ, uint32_t maxLayerZ, bool useReadPixels) 2677 : flinger(flinger), display(display), producer(producer), 2678 reqWidth(reqWidth), reqHeight(reqHeight), 2679 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2680 useReadPixels(useReadPixels), 2681 result(PERMISSION_DENIED) 2682 { 2683 } 2684 status_t getResult() const { 2685 return result; 2686 } 2687 virtual bool handler() { 2688 Mutex::Autolock _l(flinger->mStateLock); 2689 sp<const DisplayDevice> hw(flinger->getDisplayDevice(display)); 2690 if (!useReadPixels) { 2691 result = flinger->captureScreenImplLocked(hw, 2692 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2693 } else { 2694 result = flinger->captureScreenImplCpuConsumerLocked(hw, 2695 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2696 } 2697 static_cast<GraphicProducerWrapper*>(producer->asBinder().get())->exit(result); 2698 return true; 2699 } 2700 }; 2701 2702 // make sure to process transactions before screenshots -- a transaction 2703 // might already be pending but scheduled for VSYNC; this guarantees we 2704 // will handle it before the screenshot. When VSYNC finally arrives 2705 // the scheduled transaction will be a no-op. If no transactions are 2706 // scheduled at this time, this will end-up being a no-op as well. 2707 mEventQueue.invalidateTransactionNow(); 2708 2709 bool useReadPixels = false; 2710 if (isCpuConsumer) { 2711 bool formatSupportedBytBitmap = 2712 (mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBA_8888) || 2713 (mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBX_8888); 2714 if (formatSupportedBytBitmap == false) { 2715 // the pixel format we have is not compatible with 2716 // Bitmap.java, which is the likely client of this API, 2717 // so we just revert to glReadPixels() in that case. 2718 useReadPixels = true; 2719 } 2720 if (mGpuToCpuSupported == false) { 2721 // When we know the GL->CPU path works, we can call 2722 // captureScreenImplLocked() directly, instead of using the 2723 // glReadPixels() workaround. 2724 useReadPixels = true; 2725 } 2726 } 2727 2728 // this creates a "fake" BBinder which will serve as a "fake" remote 2729 // binder to receive the marshaled calls and forward them to the 2730 // real remote (a BpGraphicBufferProducer) 2731 sp<GraphicProducerWrapper> wrapper = new GraphicProducerWrapper(producer); 2732 2733 // the asInterface() call below creates our "fake" BpGraphicBufferProducer 2734 // which does the marshaling work forwards to our "fake remote" above. 2735 sp<MessageBase> msg = new MessageCaptureScreen(this, 2736 display, IGraphicBufferProducer::asInterface( wrapper ), 2737 reqWidth, reqHeight, minLayerZ, maxLayerZ, 2738 useReadPixels); 2739 2740 status_t res = postMessageAsync(msg); 2741 if (res == NO_ERROR) { 2742 res = wrapper->waitForResponse(); 2743 } 2744 return res; 2745 } 2746 2747 2748 void SurfaceFlinger::renderScreenImplLocked( 2749 const sp<const DisplayDevice>& hw, 2750 uint32_t reqWidth, uint32_t reqHeight, 2751 uint32_t minLayerZ, uint32_t maxLayerZ, 2752 bool yswap) 2753 { 2754 ATRACE_CALL(); 2755 2756 // get screen geometry 2757 const uint32_t hw_w = hw->getWidth(); 2758 const uint32_t hw_h = hw->getHeight(); 2759 2760 const bool filtering = reqWidth != hw_w || reqWidth != hw_h; 2761 2762 // make sure to clear all GL error flags 2763 while ( glGetError() != GL_NO_ERROR ) ; 2764 2765 // set-up our viewport 2766 glViewport(0, 0, reqWidth, reqHeight); 2767 glMatrixMode(GL_PROJECTION); 2768 glLoadIdentity(); 2769 if (yswap) glOrthof(0, hw_w, hw_h, 0, 0, 1); 2770 else glOrthof(0, hw_w, 0, hw_h, 0, 1); 2771 glMatrixMode(GL_MODELVIEW); 2772 glLoadIdentity(); 2773 2774 // redraw the screen entirely... 2775 glDisable(GL_SCISSOR_TEST); 2776 glClearColor(0,0,0,1); 2777 glClear(GL_COLOR_BUFFER_BIT); 2778 glDisable(GL_TEXTURE_EXTERNAL_OES); 2779 glDisable(GL_TEXTURE_2D); 2780 2781 const LayerVector& layers( mDrawingState.layersSortedByZ ); 2782 const size_t count = layers.size(); 2783 for (size_t i=0 ; i<count ; ++i) { 2784 const sp<Layer>& layer(layers[i]); 2785 const Layer::State& state(layer->drawingState()); 2786 if (state.layerStack == hw->getLayerStack()) { 2787 if (state.z >= minLayerZ && state.z <= maxLayerZ) { 2788 if (layer->isVisible()) { 2789 if (filtering) layer->setFiltering(true); 2790 layer->draw(hw); 2791 if (filtering) layer->setFiltering(false); 2792 } 2793 } 2794 } 2795 } 2796 2797 // compositionComplete is needed for older driver 2798 hw->compositionComplete(); 2799 } 2800 2801 2802 status_t SurfaceFlinger::captureScreenImplLocked( 2803 const sp<const DisplayDevice>& hw, 2804 const sp<IGraphicBufferProducer>& producer, 2805 uint32_t reqWidth, uint32_t reqHeight, 2806 uint32_t minLayerZ, uint32_t maxLayerZ) 2807 { 2808 ATRACE_CALL(); 2809 2810 // get screen geometry 2811 const uint32_t hw_w = hw->getWidth(); 2812 const uint32_t hw_h = hw->getHeight(); 2813 2814 // if we have secure windows on this display, never allow the screen capture 2815 if (hw->getSecureLayerVisible()) { 2816 ALOGW("FB is protected: PERMISSION_DENIED"); 2817 return PERMISSION_DENIED; 2818 } 2819 2820 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2821 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2822 reqWidth, reqHeight, hw_w, hw_h); 2823 return BAD_VALUE; 2824 } 2825 2826 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2827 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2828 2829 // Create a surface to render into 2830 sp<Surface> surface = new Surface(producer); 2831 ANativeWindow* const window = surface.get(); 2832 2833 // set the buffer size to what the user requested 2834 native_window_set_buffers_user_dimensions(window, reqWidth, reqHeight); 2835 2836 // and create the corresponding EGLSurface 2837 EGLSurface eglSurface = eglCreateWindowSurface( 2838 mEGLDisplay, mEGLConfig, window, NULL); 2839 if (eglSurface == EGL_NO_SURFACE) { 2840 ALOGE("captureScreenImplLocked: eglCreateWindowSurface() failed 0x%4x", 2841 eglGetError()); 2842 return BAD_VALUE; 2843 } 2844 2845 if (!eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) { 2846 ALOGE("captureScreenImplLocked: eglMakeCurrent() failed 0x%4x", 2847 eglGetError()); 2848 eglDestroySurface(mEGLDisplay, eglSurface); 2849 return BAD_VALUE; 2850 } 2851 2852 renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, false); 2853 2854 // and finishing things up... 2855 if (eglSwapBuffers(mEGLDisplay, eglSurface) != EGL_TRUE) { 2856 ALOGE("captureScreenImplLocked: eglSwapBuffers() failed 0x%4x", 2857 eglGetError()); 2858 eglDestroySurface(mEGLDisplay, eglSurface); 2859 return BAD_VALUE; 2860 } 2861 2862 eglDestroySurface(mEGLDisplay, eglSurface); 2863 2864 return NO_ERROR; 2865 } 2866 2867 2868 status_t SurfaceFlinger::captureScreenImplCpuConsumerLocked( 2869 const sp<const DisplayDevice>& hw, 2870 const sp<IGraphicBufferProducer>& producer, 2871 uint32_t reqWidth, uint32_t reqHeight, 2872 uint32_t minLayerZ, uint32_t maxLayerZ) 2873 { 2874 ATRACE_CALL(); 2875 2876 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2877 return INVALID_OPERATION; 2878 } 2879 2880 // get screen geometry 2881 const uint32_t hw_w = hw->getWidth(); 2882 const uint32_t hw_h = hw->getHeight(); 2883 2884 // if we have secure windows on this display, never allow the screen capture 2885 if (hw->getSecureLayerVisible()) { 2886 ALOGW("FB is protected: PERMISSION_DENIED"); 2887 return PERMISSION_DENIED; 2888 } 2889 2890 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2891 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2892 reqWidth, reqHeight, hw_w, hw_h); 2893 return BAD_VALUE; 2894 } 2895 2896 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2897 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2898 2899 GLuint tname; 2900 glGenRenderbuffersOES(1, &tname); 2901 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2902 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, reqWidth, reqHeight); 2903 2904 // create a FBO 2905 GLuint name; 2906 glGenFramebuffersOES(1, &name); 2907 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2908 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2909 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2910 2911 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2912 2913 status_t result = NO_ERROR; 2914 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2915 2916 renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, true); 2917 2918 // Below we render the screenshot into the 2919 // CpuConsumer using glReadPixels from our FBO. 2920 // Some older drivers don't support the GL->CPU path so we 2921 // have to wrap it with a CPU->CPU path, which is what 2922 // glReadPixels essentially is. 2923 2924 sp<Surface> sur = new Surface(producer); 2925 ANativeWindow* window = sur.get(); 2926 2927 if (native_window_api_connect(window, NATIVE_WINDOW_API_CPU) == NO_ERROR) { 2928 int err = 0; 2929 err = native_window_set_buffers_dimensions(window, reqWidth, reqHeight); 2930 err |= native_window_set_buffers_format(window, HAL_PIXEL_FORMAT_RGBA_8888); 2931 err |= native_window_set_usage(window, 2932 GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN); 2933 2934 if (err == NO_ERROR) { 2935 ANativeWindowBuffer* buffer; 2936 if (native_window_dequeue_buffer_and_wait(window, &buffer) == NO_ERROR) { 2937 sp<GraphicBuffer> buf = static_cast<GraphicBuffer*>(buffer); 2938 void* vaddr; 2939 if (buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, &vaddr) == NO_ERROR) { 2940 glReadPixels(0, 0, buffer->stride, reqHeight, 2941 GL_RGBA, GL_UNSIGNED_BYTE, vaddr); 2942 buf->unlock(); 2943 } 2944 window->queueBuffer(window, buffer, -1); 2945 } 2946 } 2947 native_window_api_disconnect(window, NATIVE_WINDOW_API_CPU); 2948 } 2949 2950 } else { 2951 ALOGE("got GL_FRAMEBUFFER_COMPLETE_OES while taking screenshot"); 2952 result = INVALID_OPERATION; 2953 } 2954 2955 // back to main framebuffer 2956 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2957 glDeleteRenderbuffersOES(1, &tname); 2958 glDeleteFramebuffersOES(1, &name); 2959 2960 DisplayDevice::setViewportAndProjection(hw); 2961 2962 return result; 2963 } 2964 2965 // --------------------------------------------------------------------------- 2966 2967 SurfaceFlinger::LayerVector::LayerVector() { 2968 } 2969 2970 SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2971 : SortedVector<sp<Layer> >(rhs) { 2972 } 2973 2974 int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2975 const void* rhs) const 2976 { 2977 // sort layers per layer-stack, then by z-order and finally by sequence 2978 const sp<Layer>& l(*reinterpret_cast<const sp<Layer>*>(lhs)); 2979 const sp<Layer>& r(*reinterpret_cast<const sp<Layer>*>(rhs)); 2980 2981 uint32_t ls = l->currentState().layerStack; 2982 uint32_t rs = r->currentState().layerStack; 2983 if (ls != rs) 2984 return ls - rs; 2985 2986 uint32_t lz = l->currentState().z; 2987 uint32_t rz = r->currentState().z; 2988 if (lz != rz) 2989 return lz - rz; 2990 2991 return l->sequence - r->sequence; 2992 } 2993 2994 // --------------------------------------------------------------------------- 2995 2996 SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2997 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2998 } 2999 3000 SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 3001 : type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) { 3002 viewport.makeInvalid(); 3003 frame.makeInvalid(); 3004 } 3005 3006 // --------------------------------------------------------------------------- 3007 3008 }; // namespace android 3009
