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/SurfaceTextureClient.h> 43 44 #include <ui/GraphicBufferAllocator.h> 45 #include <ui/PixelFormat.h> 46 #include <ui/UiConfig.h> 47 48 #include <utils/misc.h> 49 #include <utils/String8.h> 50 #include <utils/String16.h> 51 #include <utils/StopWatch.h> 52 #include <utils/Trace.h> 53 54 #include <private/android_filesystem_config.h> 55 56 #include "clz.h" 57 #include "DdmConnection.h" 58 #include "DisplayDevice.h" 59 #include "Client.h" 60 #include "EventThread.h" 61 #include "GLExtensions.h" 62 #include "Layer.h" 63 #include "LayerDim.h" 64 #include "LayerScreenshot.h" 65 #include "SurfaceFlinger.h" 66 67 #include "DisplayHardware/FramebufferSurface.h" 68 #include "DisplayHardware/GraphicBufferAlloc.h" 69 #include "DisplayHardware/HWComposer.h" 70 71 72 #define EGL_VERSION_HW_ANDROID 0x3143 73 74 #define DISPLAY_COUNT 1 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 mDebugRegion(0), 97 mDebugDDMS(0), 98 mDebugDisableHWC(0), 99 mDebugDisableTransformHint(0), 100 mDebugInSwapBuffers(0), 101 mLastSwapBufferTime(0), 102 mDebugInTransaction(0), 103 mLastTransactionTime(0), 104 mBootFinished(false) 105 { 106 ALOGI("SurfaceFlinger is starting"); 107 108 // debugging stuff... 109 char value[PROPERTY_VALUE_MAX]; 110 111 property_get("debug.sf.showupdates", value, "0"); 112 mDebugRegion = atoi(value); 113 114 property_get("debug.sf.ddms", value, "0"); 115 mDebugDDMS = atoi(value); 116 if (mDebugDDMS) { 117 if (!startDdmConnection()) { 118 // start failed, and DDMS debugging not enabled 119 mDebugDDMS = 0; 120 } 121 } 122 ALOGI_IF(mDebugRegion, "showupdates enabled"); 123 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 124 } 125 126 void SurfaceFlinger::onFirstRef() 127 { 128 mEventQueue.init(this); 129 130 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 131 132 // Wait for the main thread to be done with its initialization 133 mReadyToRunBarrier.wait(); 134 } 135 136 137 SurfaceFlinger::~SurfaceFlinger() 138 { 139 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 140 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 141 eglTerminate(display); 142 } 143 144 void SurfaceFlinger::binderDied(const wp<IBinder>& who) 145 { 146 // the window manager died on us. prepare its eulogy. 147 148 // restore initial conditions (default device unblank, etc) 149 initializeDisplays(); 150 151 // restart the boot-animation 152 startBootAnim(); 153 } 154 155 sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 156 { 157 sp<ISurfaceComposerClient> bclient; 158 sp<Client> client(new Client(this)); 159 status_t err = client->initCheck(); 160 if (err == NO_ERROR) { 161 bclient = client; 162 } 163 return bclient; 164 } 165 166 sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 167 bool secure) 168 { 169 class DisplayToken : public BBinder { 170 sp<SurfaceFlinger> flinger; 171 virtual ~DisplayToken() { 172 // no more references, this display must be terminated 173 Mutex::Autolock _l(flinger->mStateLock); 174 flinger->mCurrentState.displays.removeItem(this); 175 flinger->setTransactionFlags(eDisplayTransactionNeeded); 176 } 177 public: 178 DisplayToken(const sp<SurfaceFlinger>& flinger) 179 : flinger(flinger) { 180 } 181 }; 182 183 sp<BBinder> token = new DisplayToken(this); 184 185 Mutex::Autolock _l(mStateLock); 186 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 187 info.displayName = displayName; 188 info.isSecure = secure; 189 mCurrentState.displays.add(token, info); 190 191 return token; 192 } 193 194 sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 195 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 196 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 197 return NULL; 198 } 199 return mDefaultDisplays[id]; 200 } 201 202 sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 203 { 204 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 205 return gba; 206 } 207 208 void SurfaceFlinger::bootFinished() 209 { 210 const nsecs_t now = systemTime(); 211 const nsecs_t duration = now - mBootTime; 212 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 213 mBootFinished = true; 214 215 // wait patiently for the window manager death 216 const String16 name("window"); 217 sp<IBinder> window(defaultServiceManager()->getService(name)); 218 if (window != 0) { 219 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 220 } 221 222 // stop boot animation 223 // formerly we would just kill the process, but we now ask it to exit so it 224 // can choose where to stop the animation. 225 property_set("service.bootanim.exit", "1"); 226 } 227 228 void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 229 class MessageDestroyGLTexture : public MessageBase { 230 GLuint texture; 231 public: 232 MessageDestroyGLTexture(GLuint texture) 233 : texture(texture) { 234 } 235 virtual bool handler() { 236 glDeleteTextures(1, &texture); 237 return true; 238 } 239 }; 240 postMessageAsync(new MessageDestroyGLTexture(texture)); 241 } 242 243 status_t SurfaceFlinger::selectConfigForAttribute( 244 EGLDisplay dpy, 245 EGLint const* attrs, 246 EGLint attribute, EGLint wanted, 247 EGLConfig* outConfig) 248 { 249 EGLConfig config = NULL; 250 EGLint numConfigs = -1, n=0; 251 eglGetConfigs(dpy, NULL, 0, &numConfigs); 252 EGLConfig* const configs = new EGLConfig[numConfigs]; 253 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 254 255 if (n) { 256 if (attribute != EGL_NONE) { 257 for (int i=0 ; i<n ; i++) { 258 EGLint value = 0; 259 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 260 if (wanted == value) { 261 *outConfig = configs[i]; 262 delete [] configs; 263 return NO_ERROR; 264 } 265 } 266 } else { 267 // just pick the first one 268 *outConfig = configs[0]; 269 delete [] configs; 270 return NO_ERROR; 271 } 272 } 273 delete [] configs; 274 return NAME_NOT_FOUND; 275 } 276 277 class EGLAttributeVector { 278 struct Attribute; 279 class Adder; 280 friend class Adder; 281 KeyedVector<Attribute, EGLint> mList; 282 struct Attribute { 283 Attribute() {}; 284 Attribute(EGLint v) : v(v) { } 285 EGLint v; 286 bool operator < (const Attribute& other) const { 287 // this places EGL_NONE at the end 288 EGLint lhs(v); 289 EGLint rhs(other.v); 290 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 291 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 292 return lhs < rhs; 293 } 294 }; 295 class Adder { 296 friend class EGLAttributeVector; 297 EGLAttributeVector& v; 298 EGLint attribute; 299 Adder(EGLAttributeVector& v, EGLint attribute) 300 : v(v), attribute(attribute) { 301 } 302 public: 303 void operator = (EGLint value) { 304 if (attribute != EGL_NONE) { 305 v.mList.add(attribute, value); 306 } 307 } 308 operator EGLint () const { return v.mList[attribute]; } 309 }; 310 public: 311 EGLAttributeVector() { 312 mList.add(EGL_NONE, EGL_NONE); 313 } 314 void remove(EGLint attribute) { 315 if (attribute != EGL_NONE) { 316 mList.removeItem(attribute); 317 } 318 } 319 Adder operator [] (EGLint attribute) { 320 return Adder(*this, attribute); 321 } 322 EGLint operator [] (EGLint attribute) const { 323 return mList[attribute]; 324 } 325 // cast-operator to (EGLint const*) 326 operator EGLint const* () const { return &mList.keyAt(0).v; } 327 }; 328 329 EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 330 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 331 // it is to be used with WIFI displays 332 EGLConfig config; 333 EGLint dummy; 334 status_t err; 335 336 EGLAttributeVector attribs; 337 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 338 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 339 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 340 attribs[EGL_RED_SIZE] = 8; 341 attribs[EGL_GREEN_SIZE] = 8; 342 attribs[EGL_BLUE_SIZE] = 8; 343 344 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 345 if (!err) 346 goto success; 347 348 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 349 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 350 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 351 err = selectConfigForAttribute(display, attribs, 352 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 353 if (!err) 354 goto success; 355 356 // maybe we failed because of EGL_RECORDABLE_ANDROID 357 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 358 attribs.remove(EGL_RECORDABLE_ANDROID); 359 err = selectConfigForAttribute(display, attribs, 360 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 361 if (!err) 362 goto success; 363 364 // allow less than 24-bit color; the non-gpu-accelerated emulator only 365 // supports 16-bit color 366 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 367 attribs.remove(EGL_RED_SIZE); 368 attribs.remove(EGL_GREEN_SIZE); 369 attribs.remove(EGL_BLUE_SIZE); 370 err = selectConfigForAttribute(display, attribs, 371 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 372 if (!err) 373 goto success; 374 375 // this EGL is too lame for Android 376 ALOGE("no suitable EGLConfig found, giving up"); 377 378 return 0; 379 380 success: 381 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 382 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 383 return config; 384 } 385 386 EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 387 // Also create our EGLContext 388 EGLint contextAttributes[] = { 389 #ifdef EGL_IMG_context_priority 390 #ifdef HAS_CONTEXT_PRIORITY 391 #warning "using EGL_IMG_context_priority" 392 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 393 #endif 394 #endif 395 EGL_NONE, EGL_NONE 396 }; 397 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 398 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 399 return ctxt; 400 } 401 402 void SurfaceFlinger::initializeGL(EGLDisplay display) { 403 GLExtensions& extensions(GLExtensions::getInstance()); 404 extensions.initWithGLStrings( 405 glGetString(GL_VENDOR), 406 glGetString(GL_RENDERER), 407 glGetString(GL_VERSION), 408 glGetString(GL_EXTENSIONS), 409 eglQueryString(display, EGL_VENDOR), 410 eglQueryString(display, EGL_VERSION), 411 eglQueryString(display, EGL_EXTENSIONS)); 412 413 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 414 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 415 416 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 417 glPixelStorei(GL_PACK_ALIGNMENT, 4); 418 glEnableClientState(GL_VERTEX_ARRAY); 419 glShadeModel(GL_FLAT); 420 glDisable(GL_DITHER); 421 glDisable(GL_CULL_FACE); 422 423 struct pack565 { 424 inline uint16_t operator() (int r, int g, int b) const { 425 return (r<<11)|(g<<5)|b; 426 } 427 } pack565; 428 429 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 430 glGenTextures(1, &mProtectedTexName); 431 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 432 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 433 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 434 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 435 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 436 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 437 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 438 439 // print some debugging info 440 EGLint r,g,b,a; 441 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 442 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 443 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 444 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 445 ALOGI("EGL informations:"); 446 ALOGI("vendor : %s", extensions.getEglVendor()); 447 ALOGI("version : %s", extensions.getEglVersion()); 448 ALOGI("extensions: %s", extensions.getEglExtension()); 449 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 450 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 451 ALOGI("OpenGL ES informations:"); 452 ALOGI("vendor : %s", extensions.getVendor()); 453 ALOGI("renderer : %s", extensions.getRenderer()); 454 ALOGI("version : %s", extensions.getVersion()); 455 ALOGI("extensions: %s", extensions.getExtension()); 456 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 457 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 458 } 459 460 status_t SurfaceFlinger::readyToRun() 461 { 462 ALOGI( "SurfaceFlinger's main thread ready to run. " 463 "Initializing graphics H/W..."); 464 465 // initialize EGL for the default display 466 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 467 eglInitialize(mEGLDisplay, NULL, NULL); 468 469 // Initialize the H/W composer object. There may or may not be an 470 // actual hardware composer underneath. 471 mHwc = new HWComposer(this, 472 *static_cast<HWComposer::EventHandler *>(this)); 473 474 // initialize the config and context 475 EGLint format = mHwc->getVisualID(); 476 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 477 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 478 479 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 480 "couldn't create EGLContext"); 481 482 // initialize our non-virtual displays 483 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 484 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 485 mDefaultDisplays[i] = new BBinder(); 486 wp<IBinder> token = mDefaultDisplays[i]; 487 488 // set-up the displays that are already connected 489 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 490 // All non-virtual displays are currently considered secure. 491 bool isSecure = true; 492 mCurrentState.displays.add(token, DisplayDeviceState(type)); 493 sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc, i); 494 sp<SurfaceTextureClient> stc = new SurfaceTextureClient( 495 static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue())); 496 sp<DisplayDevice> hw = new DisplayDevice(this, 497 type, isSecure, token, stc, fbs, mEGLConfig); 498 if (i > DisplayDevice::DISPLAY_PRIMARY) { 499 // FIXME: currently we don't get blank/unblank requests 500 // for displays other than the main display, so we always 501 // assume a connected display is unblanked. 502 ALOGD("marking display %d as acquired/unblanked", i); 503 hw->acquireScreen(); 504 } 505 mDisplays.add(token, hw); 506 } 507 } 508 509 // we need a GL context current in a few places, when initializing 510 // OpenGL ES (see below), or creating a layer, 511 // or when a texture is (asynchronously) destroyed, and for that 512 // we need a valid surface, so it's convenient to use the main display 513 // for that. 514 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 515 516 // initialize OpenGL ES 517 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 518 initializeGL(mEGLDisplay); 519 520 // start the EventThread 521 mEventThread = new EventThread(this); 522 mEventQueue.setEventThread(mEventThread); 523 524 // initialize our drawing state 525 mDrawingState = mCurrentState; 526 527 528 // We're now ready to accept clients... 529 mReadyToRunBarrier.open(); 530 531 // set initial conditions (e.g. unblank default device) 532 initializeDisplays(); 533 534 // start boot animation 535 startBootAnim(); 536 537 return NO_ERROR; 538 } 539 540 int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 541 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 542 type : mHwc->allocateDisplayId(); 543 } 544 545 void SurfaceFlinger::startBootAnim() { 546 // start boot animation 547 property_set("service.bootanim.exit", "0"); 548 property_set("ctl.start", "bootanim"); 549 } 550 551 uint32_t SurfaceFlinger::getMaxTextureSize() const { 552 return mMaxTextureSize; 553 } 554 555 uint32_t SurfaceFlinger::getMaxViewportDims() const { 556 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 557 mMaxViewportDims[0] : mMaxViewportDims[1]; 558 } 559 560 // ---------------------------------------------------------------------------- 561 562 bool SurfaceFlinger::authenticateSurfaceTexture( 563 const sp<ISurfaceTexture>& surfaceTexture) const { 564 Mutex::Autolock _l(mStateLock); 565 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 566 567 // Check the visible layer list for the ISurface 568 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 569 size_t count = currentLayers.size(); 570 for (size_t i=0 ; i<count ; i++) { 571 const sp<LayerBase>& layer(currentLayers[i]); 572 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 573 if (lbc != NULL) { 574 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 575 if (lbcBinder == surfaceTextureBinder) { 576 return true; 577 } 578 } 579 } 580 581 // Check the layers in the purgatory. This check is here so that if a 582 // SurfaceTexture gets destroyed before all the clients are done using it, 583 // the error will not be reported as "surface XYZ is not authenticated", but 584 // will instead fail later on when the client tries to use the surface, 585 // which should be reported as "surface XYZ returned an -ENODEV". The 586 // purgatorized layers are no less authentic than the visible ones, so this 587 // should not cause any harm. 588 size_t purgatorySize = mLayerPurgatory.size(); 589 for (size_t i=0 ; i<purgatorySize ; i++) { 590 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 591 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 592 if (lbc != NULL) { 593 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 594 if (lbcBinder == surfaceTextureBinder) { 595 return true; 596 } 597 } 598 } 599 600 return false; 601 } 602 603 status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 604 int32_t type = BAD_VALUE; 605 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 606 if (display == mDefaultDisplays[i]) { 607 type = i; 608 break; 609 } 610 } 611 612 if (type < 0) { 613 return type; 614 } 615 616 const HWComposer& hwc(getHwComposer()); 617 if (!hwc.isConnected(type)) { 618 return NAME_NOT_FOUND; 619 } 620 621 float xdpi = hwc.getDpiX(type); 622 float ydpi = hwc.getDpiY(type); 623 624 // TODO: Not sure if display density should handled by SF any longer 625 class Density { 626 static int getDensityFromProperty(char const* propName) { 627 char property[PROPERTY_VALUE_MAX]; 628 int density = 0; 629 if (property_get(propName, property, NULL) > 0) { 630 density = atoi(property); 631 } 632 return density; 633 } 634 public: 635 static int getEmuDensity() { 636 return getDensityFromProperty("qemu.sf.lcd_density"); } 637 static int getBuildDensity() { 638 return getDensityFromProperty("ro.sf.lcd_density"); } 639 }; 640 641 if (type == DisplayDevice::DISPLAY_PRIMARY) { 642 // The density of the device is provided by a build property 643 float density = Density::getBuildDensity() / 160.0f; 644 if (density == 0) { 645 // the build doesn't provide a density -- this is wrong! 646 // use xdpi instead 647 ALOGE("ro.sf.lcd_density must be defined as a build property"); 648 density = xdpi / 160.0f; 649 } 650 if (Density::getEmuDensity()) { 651 // if "qemu.sf.lcd_density" is specified, it overrides everything 652 xdpi = ydpi = density = Density::getEmuDensity(); 653 density /= 160.0f; 654 } 655 info->density = density; 656 657 // TODO: this needs to go away (currently needed only by webkit) 658 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 659 info->orientation = hw->getOrientation(); 660 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 661 } else { 662 // TODO: where should this value come from? 663 static const int TV_DENSITY = 213; 664 info->density = TV_DENSITY / 160.0f; 665 info->orientation = 0; 666 } 667 668 info->w = hwc.getWidth(type); 669 info->h = hwc.getHeight(type); 670 info->xdpi = xdpi; 671 info->ydpi = ydpi; 672 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 673 674 // All non-virtual displays are currently considered secure. 675 info->secure = true; 676 677 return NO_ERROR; 678 } 679 680 // ---------------------------------------------------------------------------- 681 682 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 683 return mEventThread->createEventConnection(); 684 } 685 686 // ---------------------------------------------------------------------------- 687 688 void SurfaceFlinger::waitForEvent() { 689 mEventQueue.waitMessage(); 690 } 691 692 void SurfaceFlinger::signalTransaction() { 693 mEventQueue.invalidate(); 694 } 695 696 void SurfaceFlinger::signalLayerUpdate() { 697 mEventQueue.invalidate(); 698 } 699 700 void SurfaceFlinger::signalRefresh() { 701 mEventQueue.refresh(); 702 } 703 704 status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 705 nsecs_t reltime, uint32_t flags) { 706 return mEventQueue.postMessage(msg, reltime); 707 } 708 709 status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 710 nsecs_t reltime, uint32_t flags) { 711 status_t res = mEventQueue.postMessage(msg, reltime); 712 if (res == NO_ERROR) { 713 msg->wait(); 714 } 715 return res; 716 } 717 718 bool SurfaceFlinger::threadLoop() { 719 waitForEvent(); 720 return true; 721 } 722 723 void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 724 if (mEventThread == NULL) { 725 // This is a temporary workaround for b/7145521. A non-null pointer 726 // does not mean EventThread has finished initializing, so this 727 // is not a correct fix. 728 ALOGW("WARNING: EventThread not started, ignoring vsync"); 729 return; 730 } 731 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 732 // we should only receive DisplayDevice::DisplayType from the vsync callback 733 mEventThread->onVSyncReceived(type, timestamp); 734 } 735 } 736 737 void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 738 if (mEventThread == NULL) { 739 // This is a temporary workaround for b/7145521. A non-null pointer 740 // does not mean EventThread has finished initializing, so this 741 // is not a correct fix. 742 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 743 return; 744 } 745 746 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 747 Mutex::Autolock _l(mStateLock); 748 if (connected == false) { 749 mCurrentState.displays.removeItem(mDefaultDisplays[type]); 750 } else { 751 DisplayDeviceState info((DisplayDevice::DisplayType)type); 752 mCurrentState.displays.add(mDefaultDisplays[type], info); 753 } 754 setTransactionFlags(eDisplayTransactionNeeded); 755 756 // Defer EventThread notification until SF has updated mDisplays. 757 } 758 } 759 760 void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 761 getHwComposer().eventControl(disp, event, enabled); 762 } 763 764 void SurfaceFlinger::onMessageReceived(int32_t what) { 765 ATRACE_CALL(); 766 switch (what) { 767 case MessageQueue::INVALIDATE: 768 handleMessageTransaction(); 769 handleMessageInvalidate(); 770 signalRefresh(); 771 break; 772 case MessageQueue::REFRESH: 773 handleMessageRefresh(); 774 break; 775 } 776 } 777 778 void SurfaceFlinger::handleMessageTransaction() { 779 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 780 if (transactionFlags) { 781 handleTransaction(transactionFlags); 782 } 783 } 784 785 void SurfaceFlinger::handleMessageInvalidate() { 786 ATRACE_CALL(); 787 handlePageFlip(); 788 } 789 790 void SurfaceFlinger::handleMessageRefresh() { 791 ATRACE_CALL(); 792 preComposition(); 793 rebuildLayerStacks(); 794 setUpHWComposer(); 795 doDebugFlashRegions(); 796 doComposition(); 797 postComposition(); 798 } 799 800 void SurfaceFlinger::doDebugFlashRegions() 801 { 802 // is debugging enabled 803 if (CC_LIKELY(!mDebugRegion)) 804 return; 805 806 const bool repaintEverything = mRepaintEverything; 807 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 808 const sp<DisplayDevice>& hw(mDisplays[dpy]); 809 if (hw->canDraw()) { 810 // transform the dirty region into this screen's coordinate space 811 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 812 if (!dirtyRegion.isEmpty()) { 813 // redraw the whole screen 814 doComposeSurfaces(hw, Region(hw->bounds())); 815 816 // and draw the dirty region 817 glDisable(GL_TEXTURE_EXTERNAL_OES); 818 glDisable(GL_TEXTURE_2D); 819 glDisable(GL_BLEND); 820 glColor4f(1, 0, 1, 1); 821 const int32_t height = hw->getHeight(); 822 Region::const_iterator it = dirtyRegion.begin(); 823 Region::const_iterator const end = dirtyRegion.end(); 824 while (it != end) { 825 const Rect& r = *it++; 826 GLfloat vertices[][2] = { 827 { r.left, height - r.top }, 828 { r.left, height - r.bottom }, 829 { r.right, height - r.bottom }, 830 { r.right, height - r.top } 831 }; 832 glVertexPointer(2, GL_FLOAT, 0, vertices); 833 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 834 } 835 hw->compositionComplete(); 836 hw->swapBuffers(getHwComposer()); 837 } 838 } 839 } 840 841 postFramebuffer(); 842 843 if (mDebugRegion > 1) { 844 usleep(mDebugRegion * 1000); 845 } 846 847 HWComposer& hwc(getHwComposer()); 848 if (hwc.initCheck() == NO_ERROR) { 849 status_t err = hwc.prepare(); 850 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 851 } 852 } 853 854 void SurfaceFlinger::preComposition() 855 { 856 bool needExtraInvalidate = false; 857 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 858 const size_t count = currentLayers.size(); 859 for (size_t i=0 ; i<count ; i++) { 860 if (currentLayers[i]->onPreComposition()) { 861 needExtraInvalidate = true; 862 } 863 } 864 if (needExtraInvalidate) { 865 signalLayerUpdate(); 866 } 867 } 868 869 void SurfaceFlinger::postComposition() 870 { 871 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 872 const size_t count = currentLayers.size(); 873 for (size_t i=0 ; i<count ; i++) { 874 currentLayers[i]->onPostComposition(); 875 } 876 } 877 878 void SurfaceFlinger::rebuildLayerStacks() { 879 // rebuild the visible layer list per screen 880 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 881 ATRACE_CALL(); 882 mVisibleRegionsDirty = false; 883 invalidateHwcGeometry(); 884 885 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 886 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 887 Region opaqueRegion; 888 Region dirtyRegion; 889 Vector< sp<LayerBase> > layersSortedByZ; 890 const sp<DisplayDevice>& hw(mDisplays[dpy]); 891 const Transform& tr(hw->getTransform()); 892 const Rect bounds(hw->getBounds()); 893 if (hw->canDraw()) { 894 SurfaceFlinger::computeVisibleRegions(currentLayers, 895 hw->getLayerStack(), dirtyRegion, opaqueRegion); 896 897 const size_t count = currentLayers.size(); 898 for (size_t i=0 ; i<count ; i++) { 899 const sp<LayerBase>& layer(currentLayers[i]); 900 const Layer::State& s(layer->drawingState()); 901 if (s.layerStack == hw->getLayerStack()) { 902 Region drawRegion(tr.transform( 903 layer->visibleNonTransparentRegion)); 904 drawRegion.andSelf(bounds); 905 if (!drawRegion.isEmpty()) { 906 layersSortedByZ.add(layer); 907 } 908 } 909 } 910 } 911 hw->setVisibleLayersSortedByZ(layersSortedByZ); 912 hw->undefinedRegion.set(bounds); 913 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 914 hw->dirtyRegion.orSelf(dirtyRegion); 915 } 916 } 917 } 918 919 void SurfaceFlinger::setUpHWComposer() { 920 HWComposer& hwc(getHwComposer()); 921 if (hwc.initCheck() == NO_ERROR) { 922 // build the h/w work list 923 if (CC_UNLIKELY(mHwWorkListDirty)) { 924 mHwWorkListDirty = false; 925 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 926 sp<const DisplayDevice> hw(mDisplays[dpy]); 927 const int32_t id = hw->getHwcDisplayId(); 928 if (id >= 0) { 929 const Vector< sp<LayerBase> >& currentLayers( 930 hw->getVisibleLayersSortedByZ()); 931 const size_t count = currentLayers.size(); 932 if (hwc.createWorkList(id, count) == NO_ERROR) { 933 HWComposer::LayerListIterator cur = hwc.begin(id); 934 const HWComposer::LayerListIterator end = hwc.end(id); 935 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 936 const sp<LayerBase>& layer(currentLayers[i]); 937 layer->setGeometry(hw, *cur); 938 if (mDebugDisableHWC || mDebugRegion) { 939 cur->setSkip(true); 940 } 941 } 942 } 943 } 944 } 945 } 946 947 // set the per-frame data 948 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 949 sp<const DisplayDevice> hw(mDisplays[dpy]); 950 const int32_t id = hw->getHwcDisplayId(); 951 if (id >= 0) { 952 const Vector< sp<LayerBase> >& currentLayers( 953 hw->getVisibleLayersSortedByZ()); 954 const size_t count = currentLayers.size(); 955 HWComposer::LayerListIterator cur = hwc.begin(id); 956 const HWComposer::LayerListIterator end = hwc.end(id); 957 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 958 /* 959 * update the per-frame h/w composer data for each layer 960 * and build the transparent region of the FB 961 */ 962 const sp<LayerBase>& layer(currentLayers[i]); 963 layer->setPerFrameData(hw, *cur); 964 } 965 } 966 } 967 968 status_t err = hwc.prepare(); 969 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 970 } 971 } 972 973 void SurfaceFlinger::doComposition() { 974 ATRACE_CALL(); 975 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 976 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 977 const sp<DisplayDevice>& hw(mDisplays[dpy]); 978 if (hw->canDraw()) { 979 // transform the dirty region into this screen's coordinate space 980 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 981 982 // repaint the framebuffer (if needed) 983 doDisplayComposition(hw, dirtyRegion); 984 985 hw->dirtyRegion.clear(); 986 hw->flip(hw->swapRegion); 987 hw->swapRegion.clear(); 988 } 989 // inform the h/w that we're done compositing 990 hw->compositionComplete(); 991 } 992 postFramebuffer(); 993 } 994 995 void SurfaceFlinger::postFramebuffer() 996 { 997 ATRACE_CALL(); 998 999 const nsecs_t now = systemTime(); 1000 mDebugInSwapBuffers = now; 1001 1002 HWComposer& hwc(getHwComposer()); 1003 if (hwc.initCheck() == NO_ERROR) { 1004 if (!hwc.supportsFramebufferTarget()) { 1005 // EGL spec says: 1006 // "surface must be bound to the calling thread's current context, 1007 // for the current rendering API." 1008 DisplayDevice::makeCurrent(mEGLDisplay, 1009 getDefaultDisplayDevice(), mEGLContext); 1010 } 1011 hwc.commit(); 1012 } 1013 1014 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1015 sp<const DisplayDevice> hw(mDisplays[dpy]); 1016 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1017 hw->onSwapBuffersCompleted(hwc); 1018 const size_t count = currentLayers.size(); 1019 int32_t id = hw->getHwcDisplayId(); 1020 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1021 HWComposer::LayerListIterator cur = hwc.begin(id); 1022 const HWComposer::LayerListIterator end = hwc.end(id); 1023 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1024 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1025 } 1026 } else { 1027 for (size_t i = 0; i < count; i++) { 1028 currentLayers[i]->onLayerDisplayed(hw, NULL); 1029 } 1030 } 1031 } 1032 1033 mLastSwapBufferTime = systemTime() - now; 1034 mDebugInSwapBuffers = 0; 1035 } 1036 1037 void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1038 { 1039 ATRACE_CALL(); 1040 1041 Mutex::Autolock _l(mStateLock); 1042 const nsecs_t now = systemTime(); 1043 mDebugInTransaction = now; 1044 1045 // Here we're guaranteed that some transaction flags are set 1046 // so we can call handleTransactionLocked() unconditionally. 1047 // We call getTransactionFlags(), which will also clear the flags, 1048 // with mStateLock held to guarantee that mCurrentState won't change 1049 // until the transaction is committed. 1050 1051 transactionFlags = getTransactionFlags(eTransactionMask); 1052 handleTransactionLocked(transactionFlags); 1053 1054 mLastTransactionTime = systemTime() - now; 1055 mDebugInTransaction = 0; 1056 invalidateHwcGeometry(); 1057 // here the transaction has been committed 1058 } 1059 1060 void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1061 { 1062 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1063 const size_t count = currentLayers.size(); 1064 1065 /* 1066 * Traversal of the children 1067 * (perform the transaction for each of them if needed) 1068 */ 1069 1070 if (transactionFlags & eTraversalNeeded) { 1071 for (size_t i=0 ; i<count ; i++) { 1072 const sp<LayerBase>& layer = currentLayers[i]; 1073 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1074 if (!trFlags) continue; 1075 1076 const uint32_t flags = layer->doTransaction(0); 1077 if (flags & Layer::eVisibleRegion) 1078 mVisibleRegionsDirty = true; 1079 } 1080 } 1081 1082 /* 1083 * Perform display own transactions if needed 1084 */ 1085 1086 if (transactionFlags & eDisplayTransactionNeeded) { 1087 // here we take advantage of Vector's copy-on-write semantics to 1088 // improve performance by skipping the transaction entirely when 1089 // know that the lists are identical 1090 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1091 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1092 if (!curr.isIdenticalTo(draw)) { 1093 mVisibleRegionsDirty = true; 1094 const size_t cc = curr.size(); 1095 size_t dc = draw.size(); 1096 1097 // find the displays that were removed 1098 // (ie: in drawing state but not in current state) 1099 // also handle displays that changed 1100 // (ie: displays that are in both lists) 1101 for (size_t i=0 ; i<dc ; i++) { 1102 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1103 if (j < 0) { 1104 // in drawing state but not in current state 1105 if (!draw[i].isMainDisplay()) { 1106 // Call makeCurrent() on the primary display so we can 1107 // be sure that nothing associated with this display 1108 // is current. 1109 const sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1110 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1111 mDisplays.removeItem(draw.keyAt(i)); 1112 getHwComposer().disconnectDisplay(draw[i].type); 1113 mEventThread->onHotplugReceived(draw[i].type, false); 1114 } else { 1115 ALOGW("trying to remove the main display"); 1116 } 1117 } else { 1118 // this display is in both lists. see if something changed. 1119 const DisplayDeviceState& state(curr[j]); 1120 const wp<IBinder>& display(curr.keyAt(j)); 1121 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1122 // changing the surface is like destroying and 1123 // recreating the DisplayDevice, so we just remove it 1124 // from the drawing state, so that it get re-added 1125 // below. 1126 mDisplays.removeItem(display); 1127 mDrawingState.displays.removeItemsAt(i); 1128 dc--; i--; 1129 // at this point we must loop to the next item 1130 continue; 1131 } 1132 1133 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1134 if (disp != NULL) { 1135 if (state.layerStack != draw[i].layerStack) { 1136 disp->setLayerStack(state.layerStack); 1137 } 1138 if ((state.orientation != draw[i].orientation) 1139 || (state.viewport != draw[i].viewport) 1140 || (state.frame != draw[i].frame)) 1141 { 1142 disp->setProjection(state.orientation, 1143 state.viewport, state.frame); 1144 } 1145 1146 // Walk through all the layers in currentLayers, 1147 // and update their transform hint. 1148 // 1149 // TODO: we could be much more clever about which 1150 // layers we touch and how often we do these updates 1151 // (e.g. only touch the layers associated with this 1152 // display, and only on a rotation). 1153 for (size_t i = 0; i < count; i++) { 1154 const sp<LayerBase>& layerBase = currentLayers[i]; 1155 layerBase->updateTransformHint(); 1156 } 1157 } 1158 } 1159 } 1160 1161 // find displays that were added 1162 // (ie: in current state but not in drawing state) 1163 for (size_t i=0 ; i<cc ; i++) { 1164 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1165 const DisplayDeviceState& state(curr[i]); 1166 bool isSecure = false; 1167 1168 sp<FramebufferSurface> fbs; 1169 sp<SurfaceTextureClient> stc; 1170 if (!state.isVirtualDisplay()) { 1171 1172 ALOGE_IF(state.surface!=NULL, 1173 "adding a supported display, but rendering " 1174 "surface is provided (%p), ignoring it", 1175 state.surface.get()); 1176 1177 // All non-virtual displays are currently considered 1178 // secure. 1179 isSecure = true; 1180 1181 // for supported (by hwc) displays we provide our 1182 // own rendering surface 1183 fbs = new FramebufferSurface(*mHwc, state.type); 1184 stc = new SurfaceTextureClient( 1185 static_cast< sp<ISurfaceTexture> >( 1186 fbs->getBufferQueue())); 1187 } else { 1188 if (state.surface != NULL) { 1189 stc = new SurfaceTextureClient(state.surface); 1190 } 1191 isSecure = state.isSecure; 1192 } 1193 1194 const wp<IBinder>& display(curr.keyAt(i)); 1195 if (stc != NULL) { 1196 sp<DisplayDevice> hw = new DisplayDevice(this, 1197 state.type, isSecure, display, stc, fbs, 1198 mEGLConfig); 1199 hw->setLayerStack(state.layerStack); 1200 hw->setProjection(state.orientation, 1201 state.viewport, state.frame); 1202 hw->setDisplayName(state.displayName); 1203 mDisplays.add(display, hw); 1204 mEventThread->onHotplugReceived(state.type, true); 1205 } 1206 } 1207 } 1208 } 1209 } 1210 1211 /* 1212 * Perform our own transaction if needed 1213 */ 1214 1215 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1216 if (currentLayers.size() > previousLayers.size()) { 1217 // layers have been added 1218 mVisibleRegionsDirty = true; 1219 } 1220 1221 // some layers might have been removed, so 1222 // we need to update the regions they're exposing. 1223 if (mLayersRemoved) { 1224 mLayersRemoved = false; 1225 mVisibleRegionsDirty = true; 1226 const size_t count = previousLayers.size(); 1227 for (size_t i=0 ; i<count ; i++) { 1228 const sp<LayerBase>& layer(previousLayers[i]); 1229 if (currentLayers.indexOf(layer) < 0) { 1230 // this layer is not visible anymore 1231 // TODO: we could traverse the tree from front to back and 1232 // compute the actual visible region 1233 // TODO: we could cache the transformed region 1234 const Layer::State& s(layer->drawingState()); 1235 Region visibleReg = s.transform.transform( 1236 Region(Rect(s.active.w, s.active.h))); 1237 invalidateLayerStack(s.layerStack, visibleReg); 1238 } 1239 } 1240 } 1241 1242 commitTransaction(); 1243 } 1244 1245 void SurfaceFlinger::commitTransaction() 1246 { 1247 if (!mLayersPendingRemoval.isEmpty()) { 1248 // Notify removed layers now that they can't be drawn from 1249 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1250 mLayersPendingRemoval[i]->onRemoved(); 1251 } 1252 mLayersPendingRemoval.clear(); 1253 } 1254 1255 mDrawingState = mCurrentState; 1256 mTransactionPending = false; 1257 mAnimTransactionPending = false; 1258 mTransactionCV.broadcast(); 1259 } 1260 1261 void SurfaceFlinger::computeVisibleRegions( 1262 const LayerVector& currentLayers, uint32_t layerStack, 1263 Region& outDirtyRegion, Region& outOpaqueRegion) 1264 { 1265 ATRACE_CALL(); 1266 1267 Region aboveOpaqueLayers; 1268 Region aboveCoveredLayers; 1269 Region dirty; 1270 1271 outDirtyRegion.clear(); 1272 1273 size_t i = currentLayers.size(); 1274 while (i--) { 1275 const sp<LayerBase>& layer = currentLayers[i]; 1276 1277 // start with the whole surface at its current location 1278 const Layer::State& s(layer->drawingState()); 1279 1280 // only consider the layers on the given later stack 1281 if (s.layerStack != layerStack) 1282 continue; 1283 1284 /* 1285 * opaqueRegion: area of a surface that is fully opaque. 1286 */ 1287 Region opaqueRegion; 1288 1289 /* 1290 * visibleRegion: area of a surface that is visible on screen 1291 * and not fully transparent. This is essentially the layer's 1292 * footprint minus the opaque regions above it. 1293 * Areas covered by a translucent surface are considered visible. 1294 */ 1295 Region visibleRegion; 1296 1297 /* 1298 * coveredRegion: area of a surface that is covered by all 1299 * visible regions above it (which includes the translucent areas). 1300 */ 1301 Region coveredRegion; 1302 1303 /* 1304 * transparentRegion: area of a surface that is hinted to be completely 1305 * transparent. This is only used to tell when the layer has no visible 1306 * non-transparent regions and can be removed from the layer list. It 1307 * does not affect the visibleRegion of this layer or any layers 1308 * beneath it. The hint may not be correct if apps don't respect the 1309 * SurfaceView restrictions (which, sadly, some don't). 1310 */ 1311 Region transparentRegion; 1312 1313 1314 // handle hidden surfaces by setting the visible region to empty 1315 if (CC_LIKELY(layer->isVisible())) { 1316 const bool translucent = !layer->isOpaque(); 1317 Rect bounds(layer->computeBounds()); 1318 visibleRegion.set(bounds); 1319 if (!visibleRegion.isEmpty()) { 1320 // Remove the transparent area from the visible region 1321 if (translucent) { 1322 const Transform tr(s.transform); 1323 if (tr.transformed()) { 1324 if (tr.preserveRects()) { 1325 // transform the transparent region 1326 transparentRegion = tr.transform(s.transparentRegion); 1327 } else { 1328 // transformation too complex, can't do the 1329 // transparent region optimization. 1330 transparentRegion.clear(); 1331 } 1332 } else { 1333 transparentRegion = s.transparentRegion; 1334 } 1335 } 1336 1337 // compute the opaque region 1338 const int32_t layerOrientation = s.transform.getOrientation(); 1339 if (s.alpha==255 && !translucent && 1340 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1341 // the opaque region is the layer's footprint 1342 opaqueRegion = visibleRegion; 1343 } 1344 } 1345 } 1346 1347 // Clip the covered region to the visible region 1348 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1349 1350 // Update aboveCoveredLayers for next (lower) layer 1351 aboveCoveredLayers.orSelf(visibleRegion); 1352 1353 // subtract the opaque region covered by the layers above us 1354 visibleRegion.subtractSelf(aboveOpaqueLayers); 1355 1356 // compute this layer's dirty region 1357 if (layer->contentDirty) { 1358 // we need to invalidate the whole region 1359 dirty = visibleRegion; 1360 // as well, as the old visible region 1361 dirty.orSelf(layer->visibleRegion); 1362 layer->contentDirty = false; 1363 } else { 1364 /* compute the exposed region: 1365 * the exposed region consists of two components: 1366 * 1) what's VISIBLE now and was COVERED before 1367 * 2) what's EXPOSED now less what was EXPOSED before 1368 * 1369 * note that (1) is conservative, we start with the whole 1370 * visible region but only keep what used to be covered by 1371 * something -- which mean it may have been exposed. 1372 * 1373 * (2) handles areas that were not covered by anything but got 1374 * exposed because of a resize. 1375 */ 1376 const Region newExposed = visibleRegion - coveredRegion; 1377 const Region oldVisibleRegion = layer->visibleRegion; 1378 const Region oldCoveredRegion = layer->coveredRegion; 1379 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1380 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1381 } 1382 dirty.subtractSelf(aboveOpaqueLayers); 1383 1384 // accumulate to the screen dirty region 1385 outDirtyRegion.orSelf(dirty); 1386 1387 // Update aboveOpaqueLayers for next (lower) layer 1388 aboveOpaqueLayers.orSelf(opaqueRegion); 1389 1390 // Store the visible region in screen space 1391 layer->setVisibleRegion(visibleRegion); 1392 layer->setCoveredRegion(coveredRegion); 1393 layer->setVisibleNonTransparentRegion( 1394 visibleRegion.subtract(transparentRegion)); 1395 } 1396 1397 outOpaqueRegion = aboveOpaqueLayers; 1398 } 1399 1400 void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1401 const Region& dirty) { 1402 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1403 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1404 if (hw->getLayerStack() == layerStack) { 1405 hw->dirtyRegion.orSelf(dirty); 1406 } 1407 } 1408 } 1409 1410 void SurfaceFlinger::handlePageFlip() 1411 { 1412 Region dirtyRegion; 1413 1414 bool visibleRegions = false; 1415 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1416 const size_t count = currentLayers.size(); 1417 for (size_t i=0 ; i<count ; i++) { 1418 const sp<LayerBase>& layer(currentLayers[i]); 1419 const Region dirty(layer->latchBuffer(visibleRegions)); 1420 const Layer::State& s(layer->drawingState()); 1421 invalidateLayerStack(s.layerStack, dirty); 1422 } 1423 1424 mVisibleRegionsDirty |= visibleRegions; 1425 } 1426 1427 void SurfaceFlinger::invalidateHwcGeometry() 1428 { 1429 mHwWorkListDirty = true; 1430 } 1431 1432 1433 void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1434 const Region& inDirtyRegion) 1435 { 1436 Region dirtyRegion(inDirtyRegion); 1437 1438 // compute the invalid region 1439 hw->swapRegion.orSelf(dirtyRegion); 1440 1441 uint32_t flags = hw->getFlags(); 1442 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1443 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1444 // takes a rectangle, we must make sure to update that whole 1445 // rectangle in that case 1446 dirtyRegion.set(hw->swapRegion.bounds()); 1447 } else { 1448 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1449 // We need to redraw the rectangle that will be updated 1450 // (pushed to the framebuffer). 1451 // This is needed because PARTIAL_UPDATES only takes one 1452 // rectangle instead of a region (see DisplayDevice::flip()) 1453 dirtyRegion.set(hw->swapRegion.bounds()); 1454 } else { 1455 // we need to redraw everything (the whole screen) 1456 dirtyRegion.set(hw->bounds()); 1457 hw->swapRegion = dirtyRegion; 1458 } 1459 } 1460 1461 doComposeSurfaces(hw, dirtyRegion); 1462 1463 // update the swap region and clear the dirty region 1464 hw->swapRegion.orSelf(dirtyRegion); 1465 1466 // swap buffers (presentation) 1467 hw->swapBuffers(getHwComposer()); 1468 } 1469 1470 void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1471 { 1472 const int32_t id = hw->getHwcDisplayId(); 1473 HWComposer& hwc(getHwComposer()); 1474 HWComposer::LayerListIterator cur = hwc.begin(id); 1475 const HWComposer::LayerListIterator end = hwc.end(id); 1476 1477 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1478 if (hasGlesComposition) { 1479 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1480 1481 // set the frame buffer 1482 glMatrixMode(GL_MODELVIEW); 1483 glLoadIdentity(); 1484 1485 // Never touch the framebuffer if we don't have any framebuffer layers 1486 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1487 if (hasHwcComposition) { 1488 // when using overlays, we assume a fully transparent framebuffer 1489 // NOTE: we could reduce how much we need to clear, for instance 1490 // remove where there are opaque FB layers. however, on some 1491 // GPUs doing a "clean slate" glClear might be more efficient. 1492 // We'll revisit later if needed. 1493 glClearColor(0, 0, 0, 0); 1494 glClear(GL_COLOR_BUFFER_BIT); 1495 } else { 1496 const Region region(hw->undefinedRegion.intersect(dirty)); 1497 // screen is already cleared here 1498 if (!region.isEmpty()) { 1499 // can happen with SurfaceView 1500 drawWormhole(hw, region); 1501 } 1502 } 1503 1504 if (hw->getDisplayType() >= DisplayDevice::DISPLAY_EXTERNAL) { 1505 // TODO: just to be on the safe side, we don't set the 1506 // scissor on the main display. It should never be needed 1507 // anyways (though in theory it could since the API allows it). 1508 const Rect& bounds(hw->getBounds()); 1509 const Transform& tr(hw->getTransform()); 1510 const Rect scissor(tr.transform(hw->getViewport())); 1511 if (scissor != bounds) { 1512 // scissor doesn't match the screen's dimensions, so we 1513 // need to clear everything outside of it and enable 1514 // the GL scissor so we don't draw anything where we shouldn't 1515 const GLint height = hw->getHeight(); 1516 glScissor(scissor.left, height - scissor.bottom, 1517 scissor.getWidth(), scissor.getHeight()); 1518 // clear everything unscissored 1519 glClearColor(0, 0, 0, 0); 1520 glClear(GL_COLOR_BUFFER_BIT); 1521 // enable scissor for this frame 1522 glEnable(GL_SCISSOR_TEST); 1523 } 1524 } 1525 } 1526 1527 /* 1528 * and then, render the layers targeted at the framebuffer 1529 */ 1530 1531 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1532 const size_t count = layers.size(); 1533 const Transform& tr = hw->getTransform(); 1534 if (cur != end) { 1535 // we're using h/w composer 1536 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1537 const sp<LayerBase>& layer(layers[i]); 1538 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1539 if (!clip.isEmpty()) { 1540 switch (cur->getCompositionType()) { 1541 case HWC_OVERLAY: { 1542 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1543 && i 1544 && layer->isOpaque() 1545 && hasGlesComposition) { 1546 // never clear the very first layer since we're 1547 // guaranteed the FB is already cleared 1548 layer->clearWithOpenGL(hw, clip); 1549 } 1550 break; 1551 } 1552 case HWC_FRAMEBUFFER: { 1553 layer->draw(hw, clip); 1554 break; 1555 } 1556 case HWC_FRAMEBUFFER_TARGET: { 1557 // this should not happen as the iterator shouldn't 1558 // let us get there. 1559 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1560 break; 1561 } 1562 } 1563 } 1564 layer->setAcquireFence(hw, *cur); 1565 } 1566 } else { 1567 // we're not using h/w composer 1568 for (size_t i=0 ; i<count ; ++i) { 1569 const sp<LayerBase>& layer(layers[i]); 1570 const Region clip(dirty.intersect( 1571 tr.transform(layer->visibleRegion))); 1572 if (!clip.isEmpty()) { 1573 layer->draw(hw, clip); 1574 } 1575 } 1576 } 1577 1578 // disable scissor at the end of the frame 1579 glDisable(GL_SCISSOR_TEST); 1580 } 1581 1582 void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1583 const Region& region) const 1584 { 1585 glDisable(GL_TEXTURE_EXTERNAL_OES); 1586 glDisable(GL_TEXTURE_2D); 1587 glDisable(GL_BLEND); 1588 glColor4f(0,0,0,0); 1589 1590 const int32_t height = hw->getHeight(); 1591 Region::const_iterator it = region.begin(); 1592 Region::const_iterator const end = region.end(); 1593 while (it != end) { 1594 const Rect& r = *it++; 1595 GLfloat vertices[][2] = { 1596 { r.left, height - r.top }, 1597 { r.left, height - r.bottom }, 1598 { r.right, height - r.bottom }, 1599 { r.right, height - r.top } 1600 }; 1601 glVertexPointer(2, GL_FLOAT, 0, vertices); 1602 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1603 } 1604 } 1605 1606 ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1607 const sp<LayerBaseClient>& lbc) 1608 { 1609 // attach this layer to the client 1610 size_t name = client->attachLayer(lbc); 1611 1612 // add this layer to the current state list 1613 Mutex::Autolock _l(mStateLock); 1614 mCurrentState.layersSortedByZ.add(lbc); 1615 1616 return ssize_t(name); 1617 } 1618 1619 status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1620 { 1621 Mutex::Autolock _l(mStateLock); 1622 status_t err = purgatorizeLayer_l(layer); 1623 if (err == NO_ERROR) 1624 setTransactionFlags(eTransactionNeeded); 1625 return err; 1626 } 1627 1628 status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1629 { 1630 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1631 if (index >= 0) { 1632 mLayersRemoved = true; 1633 return NO_ERROR; 1634 } 1635 return status_t(index); 1636 } 1637 1638 status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1639 { 1640 // First add the layer to the purgatory list, which makes sure it won't 1641 // go away, then remove it from the main list (through a transaction). 1642 ssize_t err = removeLayer_l(layerBase); 1643 if (err >= 0) { 1644 mLayerPurgatory.add(layerBase); 1645 } 1646 1647 mLayersPendingRemoval.push(layerBase); 1648 1649 // it's possible that we don't find a layer, because it might 1650 // have been destroyed already -- this is not technically an error 1651 // from the user because there is a race between Client::destroySurface(), 1652 // ~Client() and ~ISurface(). 1653 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1654 } 1655 1656 uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1657 { 1658 return android_atomic_release_load(&mTransactionFlags); 1659 } 1660 1661 uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1662 { 1663 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1664 } 1665 1666 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1667 { 1668 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1669 if ((old & flags)==0) { // wake the server up 1670 signalTransaction(); 1671 } 1672 return old; 1673 } 1674 1675 void SurfaceFlinger::setTransactionState( 1676 const Vector<ComposerState>& state, 1677 const Vector<DisplayState>& displays, 1678 uint32_t flags) 1679 { 1680 ATRACE_CALL(); 1681 Mutex::Autolock _l(mStateLock); 1682 uint32_t transactionFlags = 0; 1683 1684 if (flags & eAnimation) { 1685 // For window updates that are part of an animation we must wait for 1686 // previous animation "frames" to be handled. 1687 while (mAnimTransactionPending) { 1688 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1689 if (CC_UNLIKELY(err != NO_ERROR)) { 1690 // just in case something goes wrong in SF, return to the 1691 // caller after a few seconds. 1692 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1693 "waiting for previous animation frame"); 1694 mAnimTransactionPending = false; 1695 break; 1696 } 1697 } 1698 } 1699 1700 size_t count = displays.size(); 1701 for (size_t i=0 ; i<count ; i++) { 1702 const DisplayState& s(displays[i]); 1703 transactionFlags |= setDisplayStateLocked(s); 1704 } 1705 1706 count = state.size(); 1707 for (size_t i=0 ; i<count ; i++) { 1708 const ComposerState& s(state[i]); 1709 // Here we need to check that the interface we're given is indeed 1710 // one of our own. A malicious client could give us a NULL 1711 // IInterface, or one of its own or even one of our own but a 1712 // different type. All these situations would cause us to crash. 1713 // 1714 // NOTE: it would be better to use RTTI as we could directly check 1715 // that we have a Client*. however, RTTI is disabled in Android. 1716 if (s.client != NULL) { 1717 sp<IBinder> binder = s.client->asBinder(); 1718 if (binder != NULL) { 1719 String16 desc(binder->getInterfaceDescriptor()); 1720 if (desc == ISurfaceComposerClient::descriptor) { 1721 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1722 transactionFlags |= setClientStateLocked(client, s.state); 1723 } 1724 } 1725 } 1726 } 1727 1728 if (transactionFlags) { 1729 // this triggers the transaction 1730 setTransactionFlags(transactionFlags); 1731 1732 // if this is a synchronous transaction, wait for it to take effect 1733 // before returning. 1734 if (flags & eSynchronous) { 1735 mTransactionPending = true; 1736 } 1737 if (flags & eAnimation) { 1738 mAnimTransactionPending = true; 1739 } 1740 while (mTransactionPending) { 1741 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1742 if (CC_UNLIKELY(err != NO_ERROR)) { 1743 // just in case something goes wrong in SF, return to the 1744 // called after a few seconds. 1745 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1746 mTransactionPending = false; 1747 break; 1748 } 1749 } 1750 } 1751 } 1752 1753 uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1754 { 1755 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1756 if (dpyIdx < 0) 1757 return 0; 1758 1759 uint32_t flags = 0; 1760 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1761 if (disp.isValid()) { 1762 const uint32_t what = s.what; 1763 if (what & DisplayState::eSurfaceChanged) { 1764 if (disp.surface->asBinder() != s.surface->asBinder()) { 1765 disp.surface = s.surface; 1766 flags |= eDisplayTransactionNeeded; 1767 } 1768 } 1769 if (what & DisplayState::eLayerStackChanged) { 1770 if (disp.layerStack != s.layerStack) { 1771 disp.layerStack = s.layerStack; 1772 flags |= eDisplayTransactionNeeded; 1773 } 1774 } 1775 if (what & DisplayState::eDisplayProjectionChanged) { 1776 if (disp.orientation != s.orientation) { 1777 disp.orientation = s.orientation; 1778 flags |= eDisplayTransactionNeeded; 1779 } 1780 if (disp.frame != s.frame) { 1781 disp.frame = s.frame; 1782 flags |= eDisplayTransactionNeeded; 1783 } 1784 if (disp.viewport != s.viewport) { 1785 disp.viewport = s.viewport; 1786 flags |= eDisplayTransactionNeeded; 1787 } 1788 } 1789 } 1790 return flags; 1791 } 1792 1793 uint32_t SurfaceFlinger::setClientStateLocked( 1794 const sp<Client>& client, 1795 const layer_state_t& s) 1796 { 1797 uint32_t flags = 0; 1798 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1799 if (layer != 0) { 1800 const uint32_t what = s.what; 1801 if (what & layer_state_t::ePositionChanged) { 1802 if (layer->setPosition(s.x, s.y)) 1803 flags |= eTraversalNeeded; 1804 } 1805 if (what & layer_state_t::eLayerChanged) { 1806 // NOTE: index needs to be calculated before we update the state 1807 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1808 if (layer->setLayer(s.z)) { 1809 mCurrentState.layersSortedByZ.removeAt(idx); 1810 mCurrentState.layersSortedByZ.add(layer); 1811 // we need traversal (state changed) 1812 // AND transaction (list changed) 1813 flags |= eTransactionNeeded|eTraversalNeeded; 1814 } 1815 } 1816 if (what & layer_state_t::eSizeChanged) { 1817 if (layer->setSize(s.w, s.h)) { 1818 flags |= eTraversalNeeded; 1819 } 1820 } 1821 if (what & layer_state_t::eAlphaChanged) { 1822 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1823 flags |= eTraversalNeeded; 1824 } 1825 if (what & layer_state_t::eMatrixChanged) { 1826 if (layer->setMatrix(s.matrix)) 1827 flags |= eTraversalNeeded; 1828 } 1829 if (what & layer_state_t::eTransparentRegionChanged) { 1830 if (layer->setTransparentRegionHint(s.transparentRegion)) 1831 flags |= eTraversalNeeded; 1832 } 1833 if (what & layer_state_t::eVisibilityChanged) { 1834 if (layer->setFlags(s.flags, s.mask)) 1835 flags |= eTraversalNeeded; 1836 } 1837 if (what & layer_state_t::eCropChanged) { 1838 if (layer->setCrop(s.crop)) 1839 flags |= eTraversalNeeded; 1840 } 1841 if (what & layer_state_t::eLayerStackChanged) { 1842 // NOTE: index needs to be calculated before we update the state 1843 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1844 if (layer->setLayerStack(s.layerStack)) { 1845 mCurrentState.layersSortedByZ.removeAt(idx); 1846 mCurrentState.layersSortedByZ.add(layer); 1847 // we need traversal (state changed) 1848 // AND transaction (list changed) 1849 flags |= eTransactionNeeded|eTraversalNeeded; 1850 } 1851 } 1852 } 1853 return flags; 1854 } 1855 1856 sp<ISurface> SurfaceFlinger::createLayer( 1857 ISurfaceComposerClient::surface_data_t* params, 1858 const String8& name, 1859 const sp<Client>& client, 1860 uint32_t w, uint32_t h, PixelFormat format, 1861 uint32_t flags) 1862 { 1863 sp<LayerBaseClient> layer; 1864 sp<ISurface> surfaceHandle; 1865 1866 if (int32_t(w|h) < 0) { 1867 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1868 int(w), int(h)); 1869 return surfaceHandle; 1870 } 1871 1872 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1873 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1874 case ISurfaceComposerClient::eFXSurfaceNormal: 1875 layer = createNormalLayer(client, w, h, flags, format); 1876 break; 1877 case ISurfaceComposerClient::eFXSurfaceBlur: 1878 case ISurfaceComposerClient::eFXSurfaceDim: 1879 layer = createDimLayer(client, w, h, flags); 1880 break; 1881 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1882 layer = createScreenshotLayer(client, w, h, flags); 1883 break; 1884 } 1885 1886 if (layer != 0) { 1887 layer->initStates(w, h, flags); 1888 layer->setName(name); 1889 ssize_t token = addClientLayer(client, layer); 1890 surfaceHandle = layer->getSurface(); 1891 if (surfaceHandle != 0) { 1892 params->token = token; 1893 params->identity = layer->getIdentity(); 1894 } 1895 setTransactionFlags(eTransactionNeeded); 1896 } 1897 1898 return surfaceHandle; 1899 } 1900 1901 sp<Layer> SurfaceFlinger::createNormalLayer( 1902 const sp<Client>& client, 1903 uint32_t w, uint32_t h, uint32_t flags, 1904 PixelFormat& format) 1905 { 1906 // initialize the surfaces 1907 switch (format) { 1908 case PIXEL_FORMAT_TRANSPARENT: 1909 case PIXEL_FORMAT_TRANSLUCENT: 1910 format = PIXEL_FORMAT_RGBA_8888; 1911 break; 1912 case PIXEL_FORMAT_OPAQUE: 1913 #ifdef NO_RGBX_8888 1914 format = PIXEL_FORMAT_RGB_565; 1915 #else 1916 format = PIXEL_FORMAT_RGBX_8888; 1917 #endif 1918 break; 1919 } 1920 1921 #ifdef NO_RGBX_8888 1922 if (format == PIXEL_FORMAT_RGBX_8888) 1923 format = PIXEL_FORMAT_RGBA_8888; 1924 #endif 1925 1926 sp<Layer> layer = new Layer(this, client); 1927 status_t err = layer->setBuffers(w, h, format, flags); 1928 if (CC_LIKELY(err != NO_ERROR)) { 1929 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1930 layer.clear(); 1931 } 1932 return layer; 1933 } 1934 1935 sp<LayerDim> SurfaceFlinger::createDimLayer( 1936 const sp<Client>& client, 1937 uint32_t w, uint32_t h, uint32_t flags) 1938 { 1939 sp<LayerDim> layer = new LayerDim(this, client); 1940 return layer; 1941 } 1942 1943 sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1944 const sp<Client>& client, 1945 uint32_t w, uint32_t h, uint32_t flags) 1946 { 1947 sp<LayerScreenshot> layer = new LayerScreenshot(this, client); 1948 return layer; 1949 } 1950 1951 status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 1952 { 1953 /* 1954 * called by the window manager, when a surface should be marked for 1955 * destruction. 1956 * 1957 * The surface is removed from the current and drawing lists, but placed 1958 * in the purgatory queue, so it's not destroyed right-away (we need 1959 * to wait for all client's references to go away first). 1960 */ 1961 1962 status_t err = NAME_NOT_FOUND; 1963 Mutex::Autolock _l(mStateLock); 1964 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1965 1966 if (layer != 0) { 1967 err = purgatorizeLayer_l(layer); 1968 if (err == NO_ERROR) { 1969 setTransactionFlags(eTransactionNeeded); 1970 } 1971 } 1972 return err; 1973 } 1974 1975 status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 1976 { 1977 // called by ~ISurface() when all references are gone 1978 status_t err = NO_ERROR; 1979 sp<LayerBaseClient> l(layer.promote()); 1980 if (l != NULL) { 1981 Mutex::Autolock _l(mStateLock); 1982 err = removeLayer_l(l); 1983 if (err == NAME_NOT_FOUND) { 1984 // The surface wasn't in the current list, which means it was 1985 // removed already, which means it is in the purgatory, 1986 // and need to be removed from there. 1987 ssize_t idx = mLayerPurgatory.remove(l); 1988 ALOGE_IF(idx < 0, 1989 "layer=%p is not in the purgatory list", l.get()); 1990 } 1991 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1992 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1993 } 1994 return err; 1995 } 1996 1997 // --------------------------------------------------------------------------- 1998 1999 void SurfaceFlinger::onInitializeDisplays() { 2000 // reset screen orientation 2001 Vector<ComposerState> state; 2002 Vector<DisplayState> displays; 2003 DisplayState d; 2004 d.what = DisplayState::eDisplayProjectionChanged; 2005 d.token = mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2006 d.orientation = DisplayState::eOrientationDefault; 2007 d.frame.makeInvalid(); 2008 d.viewport.makeInvalid(); 2009 displays.add(d); 2010 setTransactionState(state, displays, 0); 2011 onScreenAcquired(getDefaultDisplayDevice()); 2012 } 2013 2014 void SurfaceFlinger::initializeDisplays() { 2015 class MessageScreenInitialized : public MessageBase { 2016 SurfaceFlinger* flinger; 2017 public: 2018 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2019 virtual bool handler() { 2020 flinger->onInitializeDisplays(); 2021 return true; 2022 } 2023 }; 2024 sp<MessageBase> msg = new MessageScreenInitialized(this); 2025 postMessageAsync(msg); // we may be called from main thread, use async message 2026 } 2027 2028 2029 void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2030 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2031 if (hw->isScreenAcquired()) { 2032 // this is expected, e.g. when power manager wakes up during boot 2033 ALOGD(" screen was previously acquired"); 2034 return; 2035 } 2036 2037 hw->acquireScreen(); 2038 int32_t type = hw->getDisplayType(); 2039 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2040 // built-in display, tell the HWC 2041 getHwComposer().acquire(type); 2042 2043 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2044 // FIXME: eventthread only knows about the main display right now 2045 mEventThread->onScreenAcquired(); 2046 } 2047 } 2048 mVisibleRegionsDirty = true; 2049 repaintEverything(); 2050 } 2051 2052 void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2053 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2054 if (!hw->isScreenAcquired()) { 2055 ALOGD(" screen was previously released"); 2056 return; 2057 } 2058 2059 hw->releaseScreen(); 2060 int32_t type = hw->getDisplayType(); 2061 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2062 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2063 // FIXME: eventthread only knows about the main display right now 2064 mEventThread->onScreenReleased(); 2065 } 2066 2067 // built-in display, tell the HWC 2068 getHwComposer().release(type); 2069 } 2070 mVisibleRegionsDirty = true; 2071 // from this point on, SF will stop drawing on this display 2072 } 2073 2074 void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2075 class MessageScreenAcquired : public MessageBase { 2076 SurfaceFlinger& mFlinger; 2077 sp<IBinder> mDisplay; 2078 public: 2079 MessageScreenAcquired(SurfaceFlinger& flinger, 2080 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2081 virtual bool handler() { 2082 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2083 if (hw == NULL) { 2084 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2085 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2086 ALOGW("Attempt to unblank virtual display"); 2087 } else { 2088 mFlinger.onScreenAcquired(hw); 2089 } 2090 return true; 2091 } 2092 }; 2093 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2094 postMessageSync(msg); 2095 } 2096 2097 void SurfaceFlinger::blank(const sp<IBinder>& display) { 2098 class MessageScreenReleased : public MessageBase { 2099 SurfaceFlinger& mFlinger; 2100 sp<IBinder> mDisplay; 2101 public: 2102 MessageScreenReleased(SurfaceFlinger& flinger, 2103 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2104 virtual bool handler() { 2105 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2106 if (hw == NULL) { 2107 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2108 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2109 ALOGW("Attempt to blank virtual display"); 2110 } else { 2111 mFlinger.onScreenReleased(hw); 2112 } 2113 return true; 2114 } 2115 }; 2116 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2117 postMessageSync(msg); 2118 } 2119 2120 // --------------------------------------------------------------------------- 2121 2122 status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2123 { 2124 const size_t SIZE = 4096; 2125 char buffer[SIZE]; 2126 String8 result; 2127 2128 if (!PermissionCache::checkCallingPermission(sDump)) { 2129 snprintf(buffer, SIZE, "Permission Denial: " 2130 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2131 IPCThreadState::self()->getCallingPid(), 2132 IPCThreadState::self()->getCallingUid()); 2133 result.append(buffer); 2134 } else { 2135 // Try to get the main lock, but don't insist if we can't 2136 // (this would indicate SF is stuck, but we want to be able to 2137 // print something in dumpsys). 2138 int retry = 3; 2139 while (mStateLock.tryLock()<0 && --retry>=0) { 2140 usleep(1000000); 2141 } 2142 const bool locked(retry >= 0); 2143 if (!locked) { 2144 snprintf(buffer, SIZE, 2145 "SurfaceFlinger appears to be unresponsive, " 2146 "dumping anyways (no locks held)\n"); 2147 result.append(buffer); 2148 } 2149 2150 bool dumpAll = true; 2151 size_t index = 0; 2152 size_t numArgs = args.size(); 2153 if (numArgs) { 2154 if ((index < numArgs) && 2155 (args[index] == String16("--list"))) { 2156 index++; 2157 listLayersLocked(args, index, result, buffer, SIZE); 2158 dumpAll = false; 2159 } 2160 2161 if ((index < numArgs) && 2162 (args[index] == String16("--latency"))) { 2163 index++; 2164 dumpStatsLocked(args, index, result, buffer, SIZE); 2165 dumpAll = false; 2166 } 2167 2168 if ((index < numArgs) && 2169 (args[index] == String16("--latency-clear"))) { 2170 index++; 2171 clearStatsLocked(args, index, result, buffer, SIZE); 2172 dumpAll = false; 2173 } 2174 } 2175 2176 if (dumpAll) { 2177 dumpAllLocked(result, buffer, SIZE); 2178 } 2179 2180 if (locked) { 2181 mStateLock.unlock(); 2182 } 2183 } 2184 write(fd, result.string(), result.size()); 2185 return NO_ERROR; 2186 } 2187 2188 void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2189 String8& result, char* buffer, size_t SIZE) const 2190 { 2191 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2192 const size_t count = currentLayers.size(); 2193 for (size_t i=0 ; i<count ; i++) { 2194 const sp<LayerBase>& layer(currentLayers[i]); 2195 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2196 result.append(buffer); 2197 } 2198 } 2199 2200 void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2201 String8& result, char* buffer, size_t SIZE) const 2202 { 2203 String8 name; 2204 if (index < args.size()) { 2205 name = String8(args[index]); 2206 index++; 2207 } 2208 2209 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2210 const size_t count = currentLayers.size(); 2211 for (size_t i=0 ; i<count ; i++) { 2212 const sp<LayerBase>& layer(currentLayers[i]); 2213 if (name.isEmpty()) { 2214 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2215 result.append(buffer); 2216 } 2217 if (name.isEmpty() || (name == layer->getName())) { 2218 layer->dumpStats(result, buffer, SIZE); 2219 } 2220 } 2221 } 2222 2223 void SurfaceFlinger::clearStatsLocked(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 LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2233 const size_t count = currentLayers.size(); 2234 for (size_t i=0 ; i<count ; i++) { 2235 const sp<LayerBase>& layer(currentLayers[i]); 2236 if (name.isEmpty() || (name == layer->getName())) { 2237 layer->clearStats(); 2238 } 2239 } 2240 } 2241 2242 /*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2243 { 2244 static const char* config = 2245 " [sf" 2246 #ifdef NO_RGBX_8888 2247 " NO_RGBX_8888" 2248 #endif 2249 #ifdef HAS_CONTEXT_PRIORITY 2250 " HAS_CONTEXT_PRIORITY" 2251 #endif 2252 #ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2253 " NEVER_DEFAULT_TO_ASYNC_MODE" 2254 #endif 2255 #ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2256 " TARGET_DISABLE_TRIPLE_BUFFERING" 2257 #endif 2258 "]"; 2259 result.append(config); 2260 } 2261 2262 void SurfaceFlinger::dumpAllLocked( 2263 String8& result, char* buffer, size_t SIZE) const 2264 { 2265 // figure out if we're stuck somewhere 2266 const nsecs_t now = systemTime(); 2267 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2268 const nsecs_t inTransaction(mDebugInTransaction); 2269 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2270 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2271 2272 /* 2273 * Dump library configuration. 2274 */ 2275 result.append("Build configuration:"); 2276 appendSfConfigString(result); 2277 appendUiConfigString(result); 2278 appendGuiConfigString(result); 2279 result.append("\n"); 2280 2281 /* 2282 * Dump the visible layer list 2283 */ 2284 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2285 const size_t count = currentLayers.size(); 2286 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2287 result.append(buffer); 2288 for (size_t i=0 ; i<count ; i++) { 2289 const sp<LayerBase>& layer(currentLayers[i]); 2290 layer->dump(result, buffer, SIZE); 2291 } 2292 2293 /* 2294 * Dump the layers in the purgatory 2295 */ 2296 2297 const size_t purgatorySize = mLayerPurgatory.size(); 2298 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 2299 result.append(buffer); 2300 for (size_t i=0 ; i<purgatorySize ; i++) { 2301 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 2302 layer->shortDump(result, buffer, SIZE); 2303 } 2304 2305 /* 2306 * Dump Display state 2307 */ 2308 2309 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2310 result.append(buffer); 2311 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2312 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2313 hw->dump(result, buffer, SIZE); 2314 } 2315 2316 /* 2317 * Dump SurfaceFlinger global state 2318 */ 2319 2320 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2321 result.append(buffer); 2322 2323 HWComposer& hwc(getHwComposer()); 2324 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2325 const GLExtensions& extensions(GLExtensions::getInstance()); 2326 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2327 extensions.getVendor(), 2328 extensions.getRenderer(), 2329 extensions.getVersion()); 2330 result.append(buffer); 2331 2332 snprintf(buffer, SIZE, "EGL : %s\n", 2333 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2334 result.append(buffer); 2335 2336 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2337 result.append(buffer); 2338 2339 hw->undefinedRegion.dump(result, "undefinedRegion"); 2340 snprintf(buffer, SIZE, 2341 " orientation=%d, canDraw=%d\n", 2342 hw->getOrientation(), hw->canDraw()); 2343 result.append(buffer); 2344 snprintf(buffer, SIZE, 2345 " last eglSwapBuffers() time: %f us\n" 2346 " last transaction time : %f us\n" 2347 " transaction-flags : %08x\n" 2348 " refresh-rate : %f fps\n" 2349 " x-dpi : %f\n" 2350 " y-dpi : %f\n", 2351 mLastSwapBufferTime/1000.0, 2352 mLastTransactionTime/1000.0, 2353 mTransactionFlags, 2354 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2355 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2356 hwc.getDpiY(HWC_DISPLAY_PRIMARY)); 2357 result.append(buffer); 2358 2359 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2360 inSwapBuffersDuration/1000.0); 2361 result.append(buffer); 2362 2363 snprintf(buffer, SIZE, " transaction time: %f us\n", 2364 inTransactionDuration/1000.0); 2365 result.append(buffer); 2366 2367 /* 2368 * VSYNC state 2369 */ 2370 mEventThread->dump(result, buffer, SIZE); 2371 2372 /* 2373 * Dump HWComposer state 2374 */ 2375 snprintf(buffer, SIZE, "h/w composer state:\n"); 2376 result.append(buffer); 2377 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2378 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2379 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2380 result.append(buffer); 2381 hwc.dump(result, buffer, SIZE); 2382 2383 /* 2384 * Dump gralloc state 2385 */ 2386 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2387 alloc.dump(result); 2388 } 2389 2390 const Vector< sp<LayerBase> >& 2391 SurfaceFlinger::getLayerSortedByZForHwcDisplay(int disp) { 2392 // Note: mStateLock is held here 2393 return getDisplayDevice( getBuiltInDisplay(disp) )->getVisibleLayersSortedByZ(); 2394 } 2395 2396 bool SurfaceFlinger::startDdmConnection() 2397 { 2398 void* libddmconnection_dso = 2399 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2400 if (!libddmconnection_dso) { 2401 return false; 2402 } 2403 void (*DdmConnection_start)(const char* name); 2404 DdmConnection_start = 2405 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2406 if (!DdmConnection_start) { 2407 dlclose(libddmconnection_dso); 2408 return false; 2409 } 2410 (*DdmConnection_start)(getServiceName()); 2411 return true; 2412 } 2413 2414 status_t SurfaceFlinger::onTransact( 2415 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2416 { 2417 switch (code) { 2418 case CREATE_CONNECTION: 2419 case SET_TRANSACTION_STATE: 2420 case BOOT_FINISHED: 2421 case BLANK: 2422 case UNBLANK: 2423 { 2424 // codes that require permission check 2425 IPCThreadState* ipc = IPCThreadState::self(); 2426 const int pid = ipc->getCallingPid(); 2427 const int uid = ipc->getCallingUid(); 2428 if ((uid != AID_GRAPHICS) && 2429 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2430 ALOGE("Permission Denial: " 2431 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2432 return PERMISSION_DENIED; 2433 } 2434 break; 2435 } 2436 case CAPTURE_SCREEN: 2437 { 2438 // codes that require permission check 2439 IPCThreadState* ipc = IPCThreadState::self(); 2440 const int pid = ipc->getCallingPid(); 2441 const int uid = ipc->getCallingUid(); 2442 if ((uid != AID_GRAPHICS) && 2443 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2444 ALOGE("Permission Denial: " 2445 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2446 return PERMISSION_DENIED; 2447 } 2448 break; 2449 } 2450 } 2451 2452 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2453 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2454 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2455 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2456 IPCThreadState* ipc = IPCThreadState::self(); 2457 const int pid = ipc->getCallingPid(); 2458 const int uid = ipc->getCallingUid(); 2459 ALOGE("Permission Denial: " 2460 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2461 return PERMISSION_DENIED; 2462 } 2463 int n; 2464 switch (code) { 2465 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2466 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2467 return NO_ERROR; 2468 case 1002: // SHOW_UPDATES 2469 n = data.readInt32(); 2470 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2471 invalidateHwcGeometry(); 2472 repaintEverything(); 2473 return NO_ERROR; 2474 case 1004:{ // repaint everything 2475 repaintEverything(); 2476 return NO_ERROR; 2477 } 2478 case 1005:{ // force transaction 2479 setTransactionFlags( 2480 eTransactionNeeded| 2481 eDisplayTransactionNeeded| 2482 eTraversalNeeded); 2483 return NO_ERROR; 2484 } 2485 case 1006:{ // send empty update 2486 signalRefresh(); 2487 return NO_ERROR; 2488 } 2489 case 1008: // toggle use of hw composer 2490 n = data.readInt32(); 2491 mDebugDisableHWC = n ? 1 : 0; 2492 invalidateHwcGeometry(); 2493 repaintEverything(); 2494 return NO_ERROR; 2495 case 1009: // toggle use of transform hint 2496 n = data.readInt32(); 2497 mDebugDisableTransformHint = n ? 1 : 0; 2498 invalidateHwcGeometry(); 2499 repaintEverything(); 2500 return NO_ERROR; 2501 case 1010: // interrogate. 2502 reply->writeInt32(0); 2503 reply->writeInt32(0); 2504 reply->writeInt32(mDebugRegion); 2505 reply->writeInt32(0); 2506 reply->writeInt32(mDebugDisableHWC); 2507 return NO_ERROR; 2508 case 1013: { 2509 Mutex::Autolock _l(mStateLock); 2510 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2511 reply->writeInt32(hw->getPageFlipCount()); 2512 } 2513 return NO_ERROR; 2514 } 2515 } 2516 return err; 2517 } 2518 2519 void SurfaceFlinger::repaintEverything() { 2520 android_atomic_or(1, &mRepaintEverything); 2521 signalTransaction(); 2522 } 2523 2524 // --------------------------------------------------------------------------- 2525 2526 status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack, 2527 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2528 { 2529 Mutex::Autolock _l(mStateLock); 2530 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut); 2531 } 2532 2533 status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack, 2534 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2535 { 2536 ATRACE_CALL(); 2537 2538 if (!GLExtensions::getInstance().haveFramebufferObject()) 2539 return INVALID_OPERATION; 2540 2541 // get screen geometry 2542 // FIXME: figure out what it means to have a screenshot texture w/ multi-display 2543 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2544 const uint32_t hw_w = hw->getWidth(); 2545 const uint32_t hw_h = hw->getHeight(); 2546 GLfloat u = 1; 2547 GLfloat v = 1; 2548 2549 // make sure to clear all GL error flags 2550 while ( glGetError() != GL_NO_ERROR ) ; 2551 2552 // create a FBO 2553 GLuint name, tname; 2554 glGenTextures(1, &tname); 2555 glBindTexture(GL_TEXTURE_2D, tname); 2556 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2557 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2558 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2559 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2560 if (glGetError() != GL_NO_ERROR) { 2561 while ( glGetError() != GL_NO_ERROR ) ; 2562 GLint tw = (2 << (31 - clz(hw_w))); 2563 GLint th = (2 << (31 - clz(hw_h))); 2564 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2565 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2566 u = GLfloat(hw_w) / tw; 2567 v = GLfloat(hw_h) / th; 2568 } 2569 glGenFramebuffersOES(1, &name); 2570 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2571 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2572 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2573 2574 DisplayDevice::setViewportAndProjection(hw); 2575 2576 // redraw the screen entirely... 2577 glDisable(GL_TEXTURE_EXTERNAL_OES); 2578 glDisable(GL_TEXTURE_2D); 2579 glClearColor(0,0,0,1); 2580 glClear(GL_COLOR_BUFFER_BIT); 2581 glMatrixMode(GL_MODELVIEW); 2582 glLoadIdentity(); 2583 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2584 const size_t count = layers.size(); 2585 for (size_t i=0 ; i<count ; ++i) { 2586 const sp<LayerBase>& layer(layers[i]); 2587 layer->draw(hw); 2588 } 2589 2590 hw->compositionComplete(); 2591 2592 // back to main framebuffer 2593 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2594 glDeleteFramebuffersOES(1, &name); 2595 2596 *textureName = tname; 2597 *uOut = u; 2598 *vOut = v; 2599 return NO_ERROR; 2600 } 2601 2602 // --------------------------------------------------------------------------- 2603 2604 status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display, 2605 sp<IMemoryHeap>* heap, 2606 uint32_t* w, uint32_t* h, PixelFormat* f, 2607 uint32_t sw, uint32_t sh, 2608 uint32_t minLayerZ, uint32_t maxLayerZ) 2609 { 2610 ATRACE_CALL(); 2611 2612 status_t result = PERMISSION_DENIED; 2613 2614 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2615 return INVALID_OPERATION; 2616 } 2617 2618 // get screen geometry 2619 sp<const DisplayDevice> hw(getDisplayDevice(display)); 2620 const uint32_t hw_w = hw->getWidth(); 2621 const uint32_t hw_h = hw->getHeight(); 2622 2623 // if we have secure windows on this display, never allow the screen capture 2624 if (hw->getSecureLayerVisible()) { 2625 ALOGW("FB is protected: PERMISSION_DENIED"); 2626 return PERMISSION_DENIED; 2627 } 2628 2629 if ((sw > hw_w) || (sh > hw_h)) { 2630 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2631 return BAD_VALUE; 2632 } 2633 2634 sw = (!sw) ? hw_w : sw; 2635 sh = (!sh) ? hw_h : sh; 2636 const size_t size = sw * sh * 4; 2637 const bool filtering = sw != hw_w || sh != hw_h; 2638 2639 // ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2640 // sw, sh, minLayerZ, maxLayerZ); 2641 2642 // make sure to clear all GL error flags 2643 while ( glGetError() != GL_NO_ERROR ) ; 2644 2645 // create a FBO 2646 GLuint name, tname; 2647 glGenRenderbuffersOES(1, &tname); 2648 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2649 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2650 2651 glGenFramebuffersOES(1, &name); 2652 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2653 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2654 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2655 2656 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2657 2658 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2659 2660 // invert everything, b/c glReadPixel() below will invert the FB 2661 GLint viewport[4]; 2662 glGetIntegerv(GL_VIEWPORT, viewport); 2663 glViewport(0, 0, sw, sh); 2664 glMatrixMode(GL_PROJECTION); 2665 glPushMatrix(); 2666 glLoadIdentity(); 2667 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2668 glMatrixMode(GL_MODELVIEW); 2669 2670 // redraw the screen entirely... 2671 glClearColor(0,0,0,1); 2672 glClear(GL_COLOR_BUFFER_BIT); 2673 2674 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2675 const size_t count = layers.size(); 2676 for (size_t i=0 ; i<count ; ++i) { 2677 const sp<LayerBase>& layer(layers[i]); 2678 const uint32_t z = layer->drawingState().z; 2679 if (z >= minLayerZ && z <= maxLayerZ) { 2680 if (filtering) layer->setFiltering(true); 2681 layer->draw(hw); 2682 if (filtering) layer->setFiltering(false); 2683 } 2684 } 2685 2686 // check for errors and return screen capture 2687 if (glGetError() != GL_NO_ERROR) { 2688 // error while rendering 2689 result = INVALID_OPERATION; 2690 } else { 2691 // allocate shared memory large enough to hold the 2692 // screen capture 2693 sp<MemoryHeapBase> base( 2694 new MemoryHeapBase(size, 0, "screen-capture") ); 2695 void* const ptr = base->getBase(); 2696 if (ptr != MAP_FAILED) { 2697 // capture the screen with glReadPixels() 2698 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2699 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2700 if (glGetError() == GL_NO_ERROR) { 2701 *heap = base; 2702 *w = sw; 2703 *h = sh; 2704 *f = PIXEL_FORMAT_RGBA_8888; 2705 result = NO_ERROR; 2706 } 2707 } else { 2708 result = NO_MEMORY; 2709 } 2710 } 2711 glViewport(viewport[0], viewport[1], viewport[2], viewport[3]); 2712 glMatrixMode(GL_PROJECTION); 2713 glPopMatrix(); 2714 glMatrixMode(GL_MODELVIEW); 2715 } else { 2716 result = BAD_VALUE; 2717 } 2718 2719 // release FBO resources 2720 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2721 glDeleteRenderbuffersOES(1, &tname); 2722 glDeleteFramebuffersOES(1, &name); 2723 2724 hw->compositionComplete(); 2725 2726 // ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2727 2728 return result; 2729 } 2730 2731 2732 status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2733 sp<IMemoryHeap>* heap, 2734 uint32_t* width, uint32_t* height, PixelFormat* format, 2735 uint32_t sw, uint32_t sh, 2736 uint32_t minLayerZ, uint32_t maxLayerZ) 2737 { 2738 if (CC_UNLIKELY(display == 0)) 2739 return BAD_VALUE; 2740 2741 if (!GLExtensions::getInstance().haveFramebufferObject()) 2742 return INVALID_OPERATION; 2743 2744 class MessageCaptureScreen : public MessageBase { 2745 SurfaceFlinger* flinger; 2746 sp<IBinder> display; 2747 sp<IMemoryHeap>* heap; 2748 uint32_t* w; 2749 uint32_t* h; 2750 PixelFormat* f; 2751 uint32_t sw; 2752 uint32_t sh; 2753 uint32_t minLayerZ; 2754 uint32_t maxLayerZ; 2755 status_t result; 2756 public: 2757 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display, 2758 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2759 uint32_t sw, uint32_t sh, 2760 uint32_t minLayerZ, uint32_t maxLayerZ) 2761 : flinger(flinger), display(display), 2762 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2763 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2764 result(PERMISSION_DENIED) 2765 { 2766 } 2767 status_t getResult() const { 2768 return result; 2769 } 2770 virtual bool handler() { 2771 Mutex::Autolock _l(flinger->mStateLock); 2772 result = flinger->captureScreenImplLocked(display, 2773 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2774 return true; 2775 } 2776 }; 2777 2778 sp<MessageBase> msg = new MessageCaptureScreen(this, 2779 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2780 status_t res = postMessageSync(msg); 2781 if (res == NO_ERROR) { 2782 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2783 } 2784 return res; 2785 } 2786 2787 // --------------------------------------------------------------------------- 2788 2789 SurfaceFlinger::LayerVector::LayerVector() { 2790 } 2791 2792 SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2793 : SortedVector<sp<LayerBase> >(rhs) { 2794 } 2795 2796 int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2797 const void* rhs) const 2798 { 2799 // sort layers per layer-stack, then by z-order and finally by sequence 2800 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2801 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2802 2803 uint32_t ls = l->currentState().layerStack; 2804 uint32_t rs = r->currentState().layerStack; 2805 if (ls != rs) 2806 return ls - rs; 2807 2808 uint32_t lz = l->currentState().z; 2809 uint32_t rz = r->currentState().z; 2810 if (lz != rz) 2811 return lz - rz; 2812 2813 return l->sequence - r->sequence; 2814 } 2815 2816 // --------------------------------------------------------------------------- 2817 2818 SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2819 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2820 } 2821 2822 SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2823 : type(type), layerStack(0), orientation(0) { 2824 viewport.makeInvalid(); 2825 frame.makeInvalid(); 2826 } 2827 2828 // --------------------------------------------------------------------------- 2829 2830 }; // namespace android 2831
