SurfaceFlinger.cpp revision 02d86567d95b99e1142941ed7ec23a4465822813
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 57#include "clz.h" 58#include "DdmConnection.h" 59#include "DisplayDevice.h" 60#include "Client.h" 61#include "EventThread.h" 62#include "GLExtensions.h" 63#include "Layer.h" 64#include "LayerDim.h" 65#include "SurfaceFlinger.h" 66 67#include "DisplayHardware/FramebufferSurface.h" 68#include "DisplayHardware/HWComposer.h" 69#include "DisplayHardware/VirtualDisplaySurface.h" 70 71 72#define EGL_VERSION_HW_ANDROID 0x3143 73 74#define DISPLAY_COUNT 1 75 76namespace android { 77// --------------------------------------------------------------------------- 78 79const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 80const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 81const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 82const String16 sDump("android.permission.DUMP"); 83 84// --------------------------------------------------------------------------- 85 86SurfaceFlinger::SurfaceFlinger() 87 : BnSurfaceComposer(), Thread(false), 88 mTransactionFlags(0), 89 mTransactionPending(false), 90 mAnimTransactionPending(false), 91 mLayersRemoved(false), 92 mRepaintEverything(0), 93 mBootTime(systemTime()), 94 mVisibleRegionsDirty(false), 95 mHwWorkListDirty(false), 96 mAnimCompositionPending(false), 97 mDebugRegion(0), 98 mDebugDDMS(0), 99 mDebugDisableHWC(0), 100 mDebugDisableTransformHint(0), 101 mDebugInSwapBuffers(0), 102 mLastSwapBufferTime(0), 103 mDebugInTransaction(0), 104 mLastTransactionTime(0), 105 mBootFinished(false) 106{ 107 ALOGI("SurfaceFlinger is starting"); 108 109 // debugging stuff... 110 char value[PROPERTY_VALUE_MAX]; 111 112 property_get("ro.bq.gpu_to_cpu_unsupported", value, "0"); 113 mGpuToCpuSupported = !atoi(value); 114 115 property_get("debug.sf.showupdates", value, "0"); 116 mDebugRegion = atoi(value); 117 118 property_get("debug.sf.ddms", value, "0"); 119 mDebugDDMS = atoi(value); 120 if (mDebugDDMS) { 121 if (!startDdmConnection()) { 122 // start failed, and DDMS debugging not enabled 123 mDebugDDMS = 0; 124 } 125 } 126 ALOGI_IF(mDebugRegion, "showupdates enabled"); 127 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 128} 129 130void SurfaceFlinger::onFirstRef() 131{ 132 mEventQueue.init(this); 133 134 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 135 136 // Wait for the main thread to be done with its initialization 137 mReadyToRunBarrier.wait(); 138} 139 140 141SurfaceFlinger::~SurfaceFlinger() 142{ 143 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 144 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 145 eglTerminate(display); 146} 147 148void SurfaceFlinger::binderDied(const wp<IBinder>& who) 149{ 150 // the window manager died on us. prepare its eulogy. 151 152 // restore initial conditions (default device unblank, etc) 153 initializeDisplays(); 154 155 // restart the boot-animation 156 startBootAnim(); 157} 158 159sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 160{ 161 sp<ISurfaceComposerClient> bclient; 162 sp<Client> client(new Client(this)); 163 status_t err = client->initCheck(); 164 if (err == NO_ERROR) { 165 bclient = client; 166 } 167 return bclient; 168} 169 170sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 171 bool secure) 172{ 173 class DisplayToken : public BBinder { 174 sp<SurfaceFlinger> flinger; 175 virtual ~DisplayToken() { 176 // no more references, this display must be terminated 177 Mutex::Autolock _l(flinger->mStateLock); 178 flinger->mCurrentState.displays.removeItem(this); 179 flinger->setTransactionFlags(eDisplayTransactionNeeded); 180 } 181 public: 182 DisplayToken(const sp<SurfaceFlinger>& flinger) 183 : flinger(flinger) { 184 } 185 }; 186 187 sp<BBinder> token = new DisplayToken(this); 188 189 Mutex::Autolock _l(mStateLock); 190 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 191 info.displayName = displayName; 192 info.isSecure = secure; 193 mCurrentState.displays.add(token, info); 194 195 return token; 196} 197 198void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { 199 ALOGW_IF(mBuiltinDisplays[type], 200 "Overwriting display token for display type %d", type); 201 mBuiltinDisplays[type] = new BBinder(); 202 DisplayDeviceState info(type); 203 // All non-virtual displays are currently considered secure. 204 info.isSecure = true; 205 mCurrentState.displays.add(mBuiltinDisplays[type], info); 206} 207 208sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 209 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 210 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 211 return NULL; 212 } 213 return mBuiltinDisplays[id]; 214} 215 216sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 217{ 218 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 219 return gba; 220} 221 222void SurfaceFlinger::bootFinished() 223{ 224 const nsecs_t now = systemTime(); 225 const nsecs_t duration = now - mBootTime; 226 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 227 mBootFinished = true; 228 229 // wait patiently for the window manager death 230 const String16 name("window"); 231 sp<IBinder> window(defaultServiceManager()->getService(name)); 232 if (window != 0) { 233 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 234 } 235 236 // stop boot animation 237 // formerly we would just kill the process, but we now ask it to exit so it 238 // can choose where to stop the animation. 239 property_set("service.bootanim.exit", "1"); 240} 241 242void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 243 class MessageDestroyGLTexture : public MessageBase { 244 GLuint texture; 245 public: 246 MessageDestroyGLTexture(GLuint texture) 247 : texture(texture) { 248 } 249 virtual bool handler() { 250 glDeleteTextures(1, &texture); 251 return true; 252 } 253 }; 254 postMessageAsync(new MessageDestroyGLTexture(texture)); 255} 256 257status_t SurfaceFlinger::selectConfigForAttribute( 258 EGLDisplay dpy, 259 EGLint const* attrs, 260 EGLint attribute, EGLint wanted, 261 EGLConfig* outConfig) 262{ 263 EGLConfig config = NULL; 264 EGLint numConfigs = -1, n=0; 265 eglGetConfigs(dpy, NULL, 0, &numConfigs); 266 EGLConfig* const configs = new EGLConfig[numConfigs]; 267 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 268 269 if (n) { 270 if (attribute != EGL_NONE) { 271 for (int i=0 ; i<n ; i++) { 272 EGLint value = 0; 273 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 274 if (wanted == value) { 275 *outConfig = configs[i]; 276 delete [] configs; 277 return NO_ERROR; 278 } 279 } 280 } else { 281 // just pick the first one 282 *outConfig = configs[0]; 283 delete [] configs; 284 return NO_ERROR; 285 } 286 } 287 delete [] configs; 288 return NAME_NOT_FOUND; 289} 290 291class EGLAttributeVector { 292 struct Attribute; 293 class Adder; 294 friend class Adder; 295 KeyedVector<Attribute, EGLint> mList; 296 struct Attribute { 297 Attribute() {}; 298 Attribute(EGLint v) : v(v) { } 299 EGLint v; 300 bool operator < (const Attribute& other) const { 301 // this places EGL_NONE at the end 302 EGLint lhs(v); 303 EGLint rhs(other.v); 304 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 305 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 306 return lhs < rhs; 307 } 308 }; 309 class Adder { 310 friend class EGLAttributeVector; 311 EGLAttributeVector& v; 312 EGLint attribute; 313 Adder(EGLAttributeVector& v, EGLint attribute) 314 : v(v), attribute(attribute) { 315 } 316 public: 317 void operator = (EGLint value) { 318 if (attribute != EGL_NONE) { 319 v.mList.add(attribute, value); 320 } 321 } 322 operator EGLint () const { return v.mList[attribute]; } 323 }; 324public: 325 EGLAttributeVector() { 326 mList.add(EGL_NONE, EGL_NONE); 327 } 328 void remove(EGLint attribute) { 329 if (attribute != EGL_NONE) { 330 mList.removeItem(attribute); 331 } 332 } 333 Adder operator [] (EGLint attribute) { 334 return Adder(*this, attribute); 335 } 336 EGLint operator [] (EGLint attribute) const { 337 return mList[attribute]; 338 } 339 // cast-operator to (EGLint const*) 340 operator EGLint const* () const { return &mList.keyAt(0).v; } 341}; 342 343EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 344 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 345 // it is to be used with WIFI displays 346 EGLConfig config; 347 EGLint dummy; 348 status_t err; 349 350 EGLAttributeVector attribs; 351 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 352 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 353 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 354 attribs[EGL_RED_SIZE] = 8; 355 attribs[EGL_GREEN_SIZE] = 8; 356 attribs[EGL_BLUE_SIZE] = 8; 357 358 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 359 if (!err) 360 goto success; 361 362 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 363 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 364 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 365 err = selectConfigForAttribute(display, attribs, 366 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 367 if (!err) 368 goto success; 369 370 // maybe we failed because of EGL_RECORDABLE_ANDROID 371 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 372 attribs.remove(EGL_RECORDABLE_ANDROID); 373 err = selectConfigForAttribute(display, attribs, 374 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 375 if (!err) 376 goto success; 377 378 // allow less than 24-bit color; the non-gpu-accelerated emulator only 379 // supports 16-bit color 380 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 381 attribs.remove(EGL_RED_SIZE); 382 attribs.remove(EGL_GREEN_SIZE); 383 attribs.remove(EGL_BLUE_SIZE); 384 err = selectConfigForAttribute(display, attribs, 385 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 386 if (!err) 387 goto success; 388 389 // this EGL is too lame for Android 390 ALOGE("no suitable EGLConfig found, giving up"); 391 392 return 0; 393 394success: 395 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 396 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 397 return config; 398} 399 400EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 401 // Also create our EGLContext 402 EGLint contextAttributes[] = { 403#ifdef EGL_IMG_context_priority 404#ifdef HAS_CONTEXT_PRIORITY 405#warning "using EGL_IMG_context_priority" 406 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 407#endif 408#endif 409 EGL_NONE, EGL_NONE 410 }; 411 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 412 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 413 return ctxt; 414} 415 416void SurfaceFlinger::initializeGL(EGLDisplay display) { 417 GLExtensions& extensions(GLExtensions::getInstance()); 418 extensions.initWithGLStrings( 419 glGetString(GL_VENDOR), 420 glGetString(GL_RENDERER), 421 glGetString(GL_VERSION), 422 glGetString(GL_EXTENSIONS), 423 eglQueryString(display, EGL_VENDOR), 424 eglQueryString(display, EGL_VERSION), 425 eglQueryString(display, EGL_EXTENSIONS)); 426 427 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 428 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 429 430 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 431 glPixelStorei(GL_PACK_ALIGNMENT, 4); 432 glEnableClientState(GL_VERTEX_ARRAY); 433 glShadeModel(GL_FLAT); 434 glDisable(GL_DITHER); 435 glDisable(GL_CULL_FACE); 436 437 struct pack565 { 438 inline uint16_t operator() (int r, int g, int b) const { 439 return (r<<11)|(g<<5)|b; 440 } 441 } pack565; 442 443 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 444 glGenTextures(1, &mProtectedTexName); 445 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 446 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 447 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 448 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 449 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 450 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 451 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 452 453 // print some debugging info 454 EGLint r,g,b,a; 455 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 456 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 457 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 458 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 459 ALOGI("EGL informations:"); 460 ALOGI("vendor : %s", extensions.getEglVendor()); 461 ALOGI("version : %s", extensions.getEglVersion()); 462 ALOGI("extensions: %s", extensions.getEglExtension()); 463 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 464 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 465 ALOGI("OpenGL ES informations:"); 466 ALOGI("vendor : %s", extensions.getVendor()); 467 ALOGI("renderer : %s", extensions.getRenderer()); 468 ALOGI("version : %s", extensions.getVersion()); 469 ALOGI("extensions: %s", extensions.getExtension()); 470 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 471 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 472} 473 474status_t SurfaceFlinger::readyToRun() 475{ 476 ALOGI( "SurfaceFlinger's main thread ready to run. " 477 "Initializing graphics H/W..."); 478 479 Mutex::Autolock _l(mStateLock); 480 481 // initialize EGL for the default display 482 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 483 eglInitialize(mEGLDisplay, NULL, NULL); 484 485 // Initialize the H/W composer object. There may or may not be an 486 // actual hardware composer underneath. 487 mHwc = new HWComposer(this, 488 *static_cast<HWComposer::EventHandler *>(this)); 489 490 // initialize the config and context 491 EGLint format = mHwc->getVisualID(); 492 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 493 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 494 495 // figure out which format we got 496 eglGetConfigAttrib(mEGLDisplay, mEGLConfig, 497 EGL_NATIVE_VISUAL_ID, &mEGLNativeVisualId); 498 499 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 500 "couldn't create EGLContext"); 501 502 // initialize our non-virtual displays 503 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 504 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 505 // set-up the displays that are already connected 506 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 507 // All non-virtual displays are currently considered secure. 508 bool isSecure = true; 509 createBuiltinDisplayLocked(type); 510 wp<IBinder> token = mBuiltinDisplays[i]; 511 512 sp<DisplayDevice> hw = new DisplayDevice(this, 513 type, allocateHwcDisplayId(type), isSecure, token, 514 new FramebufferSurface(*mHwc, i), 515 mEGLConfig); 516 if (i > DisplayDevice::DISPLAY_PRIMARY) { 517 // FIXME: currently we don't get blank/unblank requests 518 // for displays other than the main display, so we always 519 // assume a connected display is unblanked. 520 ALOGD("marking display %d as acquired/unblanked", i); 521 hw->acquireScreen(); 522 } 523 mDisplays.add(token, hw); 524 } 525 } 526 527 // we need a GL context current in a few places, when initializing 528 // OpenGL ES (see below), or creating a layer, 529 // or when a texture is (asynchronously) destroyed, and for that 530 // we need a valid surface, so it's convenient to use the main display 531 // for that. 532 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 533 534 // initialize OpenGL ES 535 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 536 initializeGL(mEGLDisplay); 537 538 // start the EventThread 539 mEventThread = new EventThread(this); 540 mEventQueue.setEventThread(mEventThread); 541 542 // initialize our drawing state 543 mDrawingState = mCurrentState; 544 545 546 // We're now ready to accept clients... 547 mReadyToRunBarrier.open(); 548 549 // set initial conditions (e.g. unblank default device) 550 initializeDisplays(); 551 552 // start boot animation 553 startBootAnim(); 554 555 return NO_ERROR; 556} 557 558int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 559 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 560 type : mHwc->allocateDisplayId(); 561} 562 563void SurfaceFlinger::startBootAnim() { 564 // start boot animation 565 property_set("service.bootanim.exit", "0"); 566 property_set("ctl.start", "bootanim"); 567} 568 569uint32_t SurfaceFlinger::getMaxTextureSize() const { 570 return mMaxTextureSize; 571} 572 573uint32_t SurfaceFlinger::getMaxViewportDims() const { 574 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 575 mMaxViewportDims[0] : mMaxViewportDims[1]; 576} 577 578// ---------------------------------------------------------------------------- 579 580bool SurfaceFlinger::authenticateSurfaceTexture( 581 const sp<IGraphicBufferProducer>& bufferProducer) const { 582 Mutex::Autolock _l(mStateLock); 583 sp<IBinder> surfaceTextureBinder(bufferProducer->asBinder()); 584 return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0; 585} 586 587status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 588 int32_t type = NAME_NOT_FOUND; 589 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 590 if (display == mBuiltinDisplays[i]) { 591 type = i; 592 break; 593 } 594 } 595 596 if (type < 0) { 597 return type; 598 } 599 600 const HWComposer& hwc(getHwComposer()); 601 float xdpi = hwc.getDpiX(type); 602 float ydpi = hwc.getDpiY(type); 603 604 // TODO: Not sure if display density should handled by SF any longer 605 class Density { 606 static int getDensityFromProperty(char const* propName) { 607 char property[PROPERTY_VALUE_MAX]; 608 int density = 0; 609 if (property_get(propName, property, NULL) > 0) { 610 density = atoi(property); 611 } 612 return density; 613 } 614 public: 615 static int getEmuDensity() { 616 return getDensityFromProperty("qemu.sf.lcd_density"); } 617 static int getBuildDensity() { 618 return getDensityFromProperty("ro.sf.lcd_density"); } 619 }; 620 621 if (type == DisplayDevice::DISPLAY_PRIMARY) { 622 // The density of the device is provided by a build property 623 float density = Density::getBuildDensity() / 160.0f; 624 if (density == 0) { 625 // the build doesn't provide a density -- this is wrong! 626 // use xdpi instead 627 ALOGE("ro.sf.lcd_density must be defined as a build property"); 628 density = xdpi / 160.0f; 629 } 630 if (Density::getEmuDensity()) { 631 // if "qemu.sf.lcd_density" is specified, it overrides everything 632 xdpi = ydpi = density = Density::getEmuDensity(); 633 density /= 160.0f; 634 } 635 info->density = density; 636 637 // TODO: this needs to go away (currently needed only by webkit) 638 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 639 info->orientation = hw->getOrientation(); 640 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 641 } else { 642 // TODO: where should this value come from? 643 static const int TV_DENSITY = 213; 644 info->density = TV_DENSITY / 160.0f; 645 info->orientation = 0; 646 } 647 648 info->w = hwc.getWidth(type); 649 info->h = hwc.getHeight(type); 650 info->xdpi = xdpi; 651 info->ydpi = ydpi; 652 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 653 654 // All non-virtual displays are currently considered secure. 655 info->secure = true; 656 657 return NO_ERROR; 658} 659 660// ---------------------------------------------------------------------------- 661 662sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 663 return mEventThread->createEventConnection(); 664} 665 666// ---------------------------------------------------------------------------- 667 668void SurfaceFlinger::waitForEvent() { 669 mEventQueue.waitMessage(); 670} 671 672void SurfaceFlinger::signalTransaction() { 673 mEventQueue.invalidate(); 674} 675 676void SurfaceFlinger::signalLayerUpdate() { 677 mEventQueue.invalidate(); 678} 679 680void SurfaceFlinger::signalRefresh() { 681 mEventQueue.refresh(); 682} 683 684status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 685 nsecs_t reltime, uint32_t flags) { 686 return mEventQueue.postMessage(msg, reltime); 687} 688 689status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 690 nsecs_t reltime, uint32_t flags) { 691 status_t res = mEventQueue.postMessage(msg, reltime); 692 if (res == NO_ERROR) { 693 msg->wait(); 694 } 695 return res; 696} 697 698bool SurfaceFlinger::threadLoop() { 699 waitForEvent(); 700 return true; 701} 702 703void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 704 if (mEventThread == NULL) { 705 // This is a temporary workaround for b/7145521. A non-null pointer 706 // does not mean EventThread has finished initializing, so this 707 // is not a correct fix. 708 ALOGW("WARNING: EventThread not started, ignoring vsync"); 709 return; 710 } 711 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 712 // we should only receive DisplayDevice::DisplayType from the vsync callback 713 mEventThread->onVSyncReceived(type, timestamp); 714 } 715} 716 717void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 718 if (mEventThread == NULL) { 719 // This is a temporary workaround for b/7145521. A non-null pointer 720 // does not mean EventThread has finished initializing, so this 721 // is not a correct fix. 722 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 723 return; 724 } 725 726 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 727 Mutex::Autolock _l(mStateLock); 728 if (connected) { 729 createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); 730 } else { 731 mCurrentState.displays.removeItem(mBuiltinDisplays[type]); 732 mBuiltinDisplays[type].clear(); 733 } 734 setTransactionFlags(eDisplayTransactionNeeded); 735 736 // Defer EventThread notification until SF has updated mDisplays. 737 } 738} 739 740void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 741 getHwComposer().eventControl(disp, event, enabled); 742} 743 744void SurfaceFlinger::onMessageReceived(int32_t what) { 745 ATRACE_CALL(); 746 switch (what) { 747 case MessageQueue::INVALIDATE: 748 handleMessageTransaction(); 749 handleMessageInvalidate(); 750 signalRefresh(); 751 break; 752 case MessageQueue::REFRESH: 753 handleMessageRefresh(); 754 break; 755 } 756} 757 758void SurfaceFlinger::handleMessageTransaction() { 759 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 760 if (transactionFlags) { 761 handleTransaction(transactionFlags); 762 } 763} 764 765void SurfaceFlinger::handleMessageInvalidate() { 766 ATRACE_CALL(); 767 handlePageFlip(); 768} 769 770void SurfaceFlinger::handleMessageRefresh() { 771 ATRACE_CALL(); 772 preComposition(); 773 rebuildLayerStacks(); 774 setUpHWComposer(); 775 doDebugFlashRegions(); 776 doComposition(); 777 postComposition(); 778} 779 780void SurfaceFlinger::doDebugFlashRegions() 781{ 782 // is debugging enabled 783 if (CC_LIKELY(!mDebugRegion)) 784 return; 785 786 const bool repaintEverything = mRepaintEverything; 787 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 788 const sp<DisplayDevice>& hw(mDisplays[dpy]); 789 if (hw->canDraw()) { 790 // transform the dirty region into this screen's coordinate space 791 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 792 if (!dirtyRegion.isEmpty()) { 793 // redraw the whole screen 794 doComposeSurfaces(hw, Region(hw->bounds())); 795 796 // and draw the dirty region 797 glDisable(GL_TEXTURE_EXTERNAL_OES); 798 glDisable(GL_TEXTURE_2D); 799 glDisable(GL_BLEND); 800 glColor4f(1, 0, 1, 1); 801 const int32_t height = hw->getHeight(); 802 Region::const_iterator it = dirtyRegion.begin(); 803 Region::const_iterator const end = dirtyRegion.end(); 804 while (it != end) { 805 const Rect& r = *it++; 806 GLfloat vertices[][2] = { 807 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 808 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 809 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 810 { (GLfloat) r.right, (GLfloat) (height - r.top) } 811 }; 812 glVertexPointer(2, GL_FLOAT, 0, vertices); 813 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 814 } 815 hw->compositionComplete(); 816 hw->swapBuffers(getHwComposer()); 817 } 818 } 819 } 820 821 postFramebuffer(); 822 823 if (mDebugRegion > 1) { 824 usleep(mDebugRegion * 1000); 825 } 826 827 HWComposer& hwc(getHwComposer()); 828 if (hwc.initCheck() == NO_ERROR) { 829 status_t err = hwc.prepare(); 830 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 831 } 832} 833 834void SurfaceFlinger::preComposition() 835{ 836 bool needExtraInvalidate = false; 837 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 838 const size_t count = currentLayers.size(); 839 for (size_t i=0 ; i<count ; i++) { 840 if (currentLayers[i]->onPreComposition()) { 841 needExtraInvalidate = true; 842 } 843 } 844 if (needExtraInvalidate) { 845 signalLayerUpdate(); 846 } 847} 848 849void SurfaceFlinger::postComposition() 850{ 851 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 852 const size_t count = currentLayers.size(); 853 for (size_t i=0 ; i<count ; i++) { 854 currentLayers[i]->onPostComposition(); 855 } 856 857 if (mAnimCompositionPending) { 858 mAnimCompositionPending = false; 859 860 const HWComposer& hwc = getHwComposer(); 861 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 862 if (presentFence->isValid()) { 863 mAnimFrameTracker.setActualPresentFence(presentFence); 864 } else { 865 // The HWC doesn't support present fences, so use the refresh 866 // timestamp instead. 867 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 868 mAnimFrameTracker.setActualPresentTime(presentTime); 869 } 870 mAnimFrameTracker.advanceFrame(); 871 } 872} 873 874void SurfaceFlinger::rebuildLayerStacks() { 875 // rebuild the visible layer list per screen 876 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 877 ATRACE_CALL(); 878 mVisibleRegionsDirty = false; 879 invalidateHwcGeometry(); 880 881 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 882 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 883 Region opaqueRegion; 884 Region dirtyRegion; 885 Vector< sp<Layer> > layersSortedByZ; 886 const sp<DisplayDevice>& hw(mDisplays[dpy]); 887 const Transform& tr(hw->getTransform()); 888 const Rect bounds(hw->getBounds()); 889 if (hw->canDraw()) { 890 SurfaceFlinger::computeVisibleRegions(currentLayers, 891 hw->getLayerStack(), dirtyRegion, opaqueRegion); 892 893 const size_t count = currentLayers.size(); 894 for (size_t i=0 ; i<count ; i++) { 895 const sp<Layer>& layer(currentLayers[i]); 896 const Layer::State& s(layer->drawingState()); 897 if (s.layerStack == hw->getLayerStack()) { 898 Region drawRegion(tr.transform( 899 layer->visibleNonTransparentRegion)); 900 drawRegion.andSelf(bounds); 901 if (!drawRegion.isEmpty()) { 902 layersSortedByZ.add(layer); 903 } 904 } 905 } 906 } 907 hw->setVisibleLayersSortedByZ(layersSortedByZ); 908 hw->undefinedRegion.set(bounds); 909 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 910 hw->dirtyRegion.orSelf(dirtyRegion); 911 } 912 } 913} 914 915void SurfaceFlinger::setUpHWComposer() { 916 HWComposer& hwc(getHwComposer()); 917 if (hwc.initCheck() == NO_ERROR) { 918 // build the h/w work list 919 if (CC_UNLIKELY(mHwWorkListDirty)) { 920 mHwWorkListDirty = false; 921 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 922 sp<const DisplayDevice> hw(mDisplays[dpy]); 923 const int32_t id = hw->getHwcDisplayId(); 924 if (id >= 0) { 925 const Vector< sp<Layer> >& currentLayers( 926 hw->getVisibleLayersSortedByZ()); 927 const size_t count = currentLayers.size(); 928 if (hwc.createWorkList(id, count) == NO_ERROR) { 929 HWComposer::LayerListIterator cur = hwc.begin(id); 930 const HWComposer::LayerListIterator end = hwc.end(id); 931 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 932 const sp<Layer>& layer(currentLayers[i]); 933 layer->setGeometry(hw, *cur); 934 if (mDebugDisableHWC || mDebugRegion) { 935 cur->setSkip(true); 936 } 937 } 938 } 939 } 940 } 941 } 942 943 // set the per-frame data 944 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 945 sp<const DisplayDevice> hw(mDisplays[dpy]); 946 const int32_t id = hw->getHwcDisplayId(); 947 if (id >= 0) { 948 const Vector< sp<Layer> >& currentLayers( 949 hw->getVisibleLayersSortedByZ()); 950 const size_t count = currentLayers.size(); 951 HWComposer::LayerListIterator cur = hwc.begin(id); 952 const HWComposer::LayerListIterator end = hwc.end(id); 953 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 954 /* 955 * update the per-frame h/w composer data for each layer 956 * and build the transparent region of the FB 957 */ 958 const sp<Layer>& layer(currentLayers[i]); 959 layer->setPerFrameData(hw, *cur); 960 } 961 } 962 } 963 964 status_t err = hwc.prepare(); 965 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 966 } 967} 968 969void SurfaceFlinger::doComposition() { 970 ATRACE_CALL(); 971 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 972 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 973 const sp<DisplayDevice>& hw(mDisplays[dpy]); 974 if (hw->canDraw()) { 975 // transform the dirty region into this screen's coordinate space 976 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 977 978 // repaint the framebuffer (if needed) 979 doDisplayComposition(hw, dirtyRegion); 980 981 hw->dirtyRegion.clear(); 982 hw->flip(hw->swapRegion); 983 hw->swapRegion.clear(); 984 } 985 // inform the h/w that we're done compositing 986 hw->compositionComplete(); 987 } 988 postFramebuffer(); 989} 990 991void SurfaceFlinger::postFramebuffer() 992{ 993 ATRACE_CALL(); 994 995 const nsecs_t now = systemTime(); 996 mDebugInSwapBuffers = now; 997 998 HWComposer& hwc(getHwComposer()); 999 if (hwc.initCheck() == NO_ERROR) { 1000 if (!hwc.supportsFramebufferTarget()) { 1001 // EGL spec says: 1002 // "surface must be bound to the calling thread's current context, 1003 // for the current rendering API." 1004 DisplayDevice::makeCurrent(mEGLDisplay, 1005 getDefaultDisplayDevice(), mEGLContext); 1006 } 1007 hwc.commit(); 1008 } 1009 1010 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1011 sp<const DisplayDevice> hw(mDisplays[dpy]); 1012 const Vector< sp<Layer> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1013 hw->onSwapBuffersCompleted(hwc); 1014 const size_t count = currentLayers.size(); 1015 int32_t id = hw->getHwcDisplayId(); 1016 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1017 HWComposer::LayerListIterator cur = hwc.begin(id); 1018 const HWComposer::LayerListIterator end = hwc.end(id); 1019 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1020 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1021 } 1022 } else { 1023 for (size_t i = 0; i < count; i++) { 1024 currentLayers[i]->onLayerDisplayed(hw, NULL); 1025 } 1026 } 1027 } 1028 1029 mLastSwapBufferTime = systemTime() - now; 1030 mDebugInSwapBuffers = 0; 1031} 1032 1033void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1034{ 1035 ATRACE_CALL(); 1036 1037 Mutex::Autolock _l(mStateLock); 1038 const nsecs_t now = systemTime(); 1039 mDebugInTransaction = now; 1040 1041 // Here we're guaranteed that some transaction flags are set 1042 // so we can call handleTransactionLocked() unconditionally. 1043 // We call getTransactionFlags(), which will also clear the flags, 1044 // with mStateLock held to guarantee that mCurrentState won't change 1045 // until the transaction is committed. 1046 1047 transactionFlags = getTransactionFlags(eTransactionMask); 1048 handleTransactionLocked(transactionFlags); 1049 1050 mLastTransactionTime = systemTime() - now; 1051 mDebugInTransaction = 0; 1052 invalidateHwcGeometry(); 1053 // here the transaction has been committed 1054} 1055 1056void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1057{ 1058 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1059 const size_t count = currentLayers.size(); 1060 1061 /* 1062 * Traversal of the children 1063 * (perform the transaction for each of them if needed) 1064 */ 1065 1066 if (transactionFlags & eTraversalNeeded) { 1067 for (size_t i=0 ; i<count ; i++) { 1068 const sp<Layer>& layer(currentLayers[i]); 1069 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1070 if (!trFlags) continue; 1071 1072 const uint32_t flags = layer->doTransaction(0); 1073 if (flags & Layer::eVisibleRegion) 1074 mVisibleRegionsDirty = true; 1075 } 1076 } 1077 1078 /* 1079 * Perform display own transactions if needed 1080 */ 1081 1082 if (transactionFlags & eDisplayTransactionNeeded) { 1083 // here we take advantage of Vector's copy-on-write semantics to 1084 // improve performance by skipping the transaction entirely when 1085 // know that the lists are identical 1086 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1087 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1088 if (!curr.isIdenticalTo(draw)) { 1089 mVisibleRegionsDirty = true; 1090 const size_t cc = curr.size(); 1091 size_t dc = draw.size(); 1092 1093 // find the displays that were removed 1094 // (ie: in drawing state but not in current state) 1095 // also handle displays that changed 1096 // (ie: displays that are in both lists) 1097 for (size_t i=0 ; i<dc ; i++) { 1098 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1099 if (j < 0) { 1100 // in drawing state but not in current state 1101 if (!draw[i].isMainDisplay()) { 1102 // Call makeCurrent() on the primary display so we can 1103 // be sure that nothing associated with this display 1104 // is current. 1105 const sp<const DisplayDevice> defaultDisplay(getDefaultDisplayDevice()); 1106 DisplayDevice::makeCurrent(mEGLDisplay, defaultDisplay, mEGLContext); 1107 sp<DisplayDevice> hw(getDisplayDevice(draw.keyAt(i))); 1108 if (hw != NULL) 1109 hw->disconnect(getHwComposer()); 1110 if (draw[i].type < DisplayDevice::NUM_DISPLAY_TYPES) 1111 mEventThread->onHotplugReceived(draw[i].type, false); 1112 mDisplays.removeItem(draw.keyAt(i)); 1113 } else { 1114 ALOGW("trying to remove the main display"); 1115 } 1116 } else { 1117 // this display is in both lists. see if something changed. 1118 const DisplayDeviceState& state(curr[j]); 1119 const wp<IBinder>& display(curr.keyAt(j)); 1120 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1121 // changing the surface is like destroying and 1122 // recreating the DisplayDevice, so we just remove it 1123 // from the drawing state, so that it get re-added 1124 // below. 1125 sp<DisplayDevice> hw(getDisplayDevice(display)); 1126 if (hw != NULL) 1127 hw->disconnect(getHwComposer()); 1128 mDisplays.removeItem(display); 1129 mDrawingState.displays.removeItemsAt(i); 1130 dc--; i--; 1131 // at this point we must loop to the next item 1132 continue; 1133 } 1134 1135 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1136 if (disp != NULL) { 1137 if (state.layerStack != draw[i].layerStack) { 1138 disp->setLayerStack(state.layerStack); 1139 } 1140 if ((state.orientation != draw[i].orientation) 1141 || (state.viewport != draw[i].viewport) 1142 || (state.frame != draw[i].frame)) 1143 { 1144 disp->setProjection(state.orientation, 1145 state.viewport, state.frame); 1146 } 1147 } 1148 } 1149 } 1150 1151 // find displays that were added 1152 // (ie: in current state but not in drawing state) 1153 for (size_t i=0 ; i<cc ; i++) { 1154 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1155 const DisplayDeviceState& state(curr[i]); 1156 1157 sp<DisplaySurface> dispSurface; 1158 int32_t hwcDisplayId = -1; 1159 if (state.isVirtualDisplay()) { 1160 // Virtual displays without a surface are dormant: 1161 // they have external state (layer stack, projection, 1162 // etc.) but no internal state (i.e. a DisplayDevice). 1163 if (state.surface != NULL) { 1164 hwcDisplayId = allocateHwcDisplayId(state.type); 1165 dispSurface = new VirtualDisplaySurface( 1166 *mHwc, hwcDisplayId, state.surface, 1167 state.displayName); 1168 } 1169 } else { 1170 ALOGE_IF(state.surface!=NULL, 1171 "adding a supported display, but rendering " 1172 "surface is provided (%p), ignoring it", 1173 state.surface.get()); 1174 hwcDisplayId = allocateHwcDisplayId(state.type); 1175 // for supported (by hwc) displays we provide our 1176 // own rendering surface 1177 dispSurface = new FramebufferSurface(*mHwc, state.type); 1178 } 1179 1180 const wp<IBinder>& display(curr.keyAt(i)); 1181 if (dispSurface != NULL) { 1182 sp<DisplayDevice> hw = new DisplayDevice(this, 1183 state.type, hwcDisplayId, state.isSecure, 1184 display, dispSurface, mEGLConfig); 1185 hw->setLayerStack(state.layerStack); 1186 hw->setProjection(state.orientation, 1187 state.viewport, state.frame); 1188 hw->setDisplayName(state.displayName); 1189 mDisplays.add(display, hw); 1190 if (state.type < DisplayDevice::NUM_DISPLAY_TYPES) 1191 mEventThread->onHotplugReceived(state.type, true); 1192 } 1193 } 1194 } 1195 } 1196 } 1197 1198 if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { 1199 // The transform hint might have changed for some layers 1200 // (either because a display has changed, or because a layer 1201 // as changed). 1202 // 1203 // Walk through all the layers in currentLayers, 1204 // and update their transform hint. 1205 // 1206 // If a layer is visible only on a single display, then that 1207 // display is used to calculate the hint, otherwise we use the 1208 // default display. 1209 // 1210 // NOTE: we do this here, rather than in rebuildLayerStacks() so that 1211 // the hint is set before we acquire a buffer from the surface texture. 1212 // 1213 // NOTE: layer transactions have taken place already, so we use their 1214 // drawing state. However, SurfaceFlinger's own transaction has not 1215 // happened yet, so we must use the current state layer list 1216 // (soon to become the drawing state list). 1217 // 1218 sp<const DisplayDevice> disp; 1219 uint32_t currentlayerStack = 0; 1220 for (size_t i=0; i<count; i++) { 1221 // NOTE: we rely on the fact that layers are sorted by 1222 // layerStack first (so we don't have to traverse the list 1223 // of displays for every layer). 1224 const sp<Layer>& layer(currentLayers[i]); 1225 uint32_t layerStack = layer->drawingState().layerStack; 1226 if (i==0 || currentlayerStack != layerStack) { 1227 currentlayerStack = layerStack; 1228 // figure out if this layerstack is mirrored 1229 // (more than one display) if so, pick the default display, 1230 // if not, pick the only display it's on. 1231 disp.clear(); 1232 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1233 sp<const DisplayDevice> hw(mDisplays[dpy]); 1234 if (hw->getLayerStack() == currentlayerStack) { 1235 if (disp == NULL) { 1236 disp = hw; 1237 } else { 1238 disp = getDefaultDisplayDevice(); 1239 break; 1240 } 1241 } 1242 } 1243 } 1244 if (disp != NULL) { 1245 // presumably this means this layer is using a layerStack 1246 // that is not visible on any display 1247 layer->updateTransformHint(disp); 1248 } 1249 } 1250 } 1251 1252 1253 /* 1254 * Perform our own transaction if needed 1255 */ 1256 1257 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1258 if (currentLayers.size() > previousLayers.size()) { 1259 // layers have been added 1260 mVisibleRegionsDirty = true; 1261 } 1262 1263 // some layers might have been removed, so 1264 // we need to update the regions they're exposing. 1265 if (mLayersRemoved) { 1266 mLayersRemoved = false; 1267 mVisibleRegionsDirty = true; 1268 const size_t count = previousLayers.size(); 1269 for (size_t i=0 ; i<count ; i++) { 1270 const sp<Layer>& layer(previousLayers[i]); 1271 if (currentLayers.indexOf(layer) < 0) { 1272 // this layer is not visible anymore 1273 // TODO: we could traverse the tree from front to back and 1274 // compute the actual visible region 1275 // TODO: we could cache the transformed region 1276 const Layer::State& s(layer->drawingState()); 1277 Region visibleReg = s.transform.transform( 1278 Region(Rect(s.active.w, s.active.h))); 1279 invalidateLayerStack(s.layerStack, visibleReg); 1280 } 1281 } 1282 } 1283 1284 commitTransaction(); 1285} 1286 1287void SurfaceFlinger::commitTransaction() 1288{ 1289 if (!mLayersPendingRemoval.isEmpty()) { 1290 // Notify removed layers now that they can't be drawn from 1291 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1292 mLayersPendingRemoval[i]->onRemoved(); 1293 } 1294 mLayersPendingRemoval.clear(); 1295 } 1296 1297 // If this transaction is part of a window animation then the next frame 1298 // we composite should be considered an animation as well. 1299 mAnimCompositionPending = mAnimTransactionPending; 1300 1301 mDrawingState = mCurrentState; 1302 mTransactionPending = false; 1303 mAnimTransactionPending = false; 1304 mTransactionCV.broadcast(); 1305} 1306 1307void SurfaceFlinger::computeVisibleRegions( 1308 const LayerVector& currentLayers, uint32_t layerStack, 1309 Region& outDirtyRegion, Region& outOpaqueRegion) 1310{ 1311 ATRACE_CALL(); 1312 1313 Region aboveOpaqueLayers; 1314 Region aboveCoveredLayers; 1315 Region dirty; 1316 1317 outDirtyRegion.clear(); 1318 1319 size_t i = currentLayers.size(); 1320 while (i--) { 1321 const sp<Layer>& layer = currentLayers[i]; 1322 1323 // start with the whole surface at its current location 1324 const Layer::State& s(layer->drawingState()); 1325 1326 // only consider the layers on the given layer stack 1327 if (s.layerStack != layerStack) 1328 continue; 1329 1330 /* 1331 * opaqueRegion: area of a surface that is fully opaque. 1332 */ 1333 Region opaqueRegion; 1334 1335 /* 1336 * visibleRegion: area of a surface that is visible on screen 1337 * and not fully transparent. This is essentially the layer's 1338 * footprint minus the opaque regions above it. 1339 * Areas covered by a translucent surface are considered visible. 1340 */ 1341 Region visibleRegion; 1342 1343 /* 1344 * coveredRegion: area of a surface that is covered by all 1345 * visible regions above it (which includes the translucent areas). 1346 */ 1347 Region coveredRegion; 1348 1349 /* 1350 * transparentRegion: area of a surface that is hinted to be completely 1351 * transparent. This is only used to tell when the layer has no visible 1352 * non-transparent regions and can be removed from the layer list. It 1353 * does not affect the visibleRegion of this layer or any layers 1354 * beneath it. The hint may not be correct if apps don't respect the 1355 * SurfaceView restrictions (which, sadly, some don't). 1356 */ 1357 Region transparentRegion; 1358 1359 1360 // handle hidden surfaces by setting the visible region to empty 1361 if (CC_LIKELY(layer->isVisible())) { 1362 const bool translucent = !layer->isOpaque(); 1363 Rect bounds(s.transform.transform(layer->computeBounds())); 1364 visibleRegion.set(bounds); 1365 if (!visibleRegion.isEmpty()) { 1366 // Remove the transparent area from the visible region 1367 if (translucent) { 1368 const Transform tr(s.transform); 1369 if (tr.transformed()) { 1370 if (tr.preserveRects()) { 1371 // transform the transparent region 1372 transparentRegion = tr.transform(s.transparentRegion); 1373 } else { 1374 // transformation too complex, can't do the 1375 // transparent region optimization. 1376 transparentRegion.clear(); 1377 } 1378 } else { 1379 transparentRegion = s.transparentRegion; 1380 } 1381 } 1382 1383 // compute the opaque region 1384 const int32_t layerOrientation = s.transform.getOrientation(); 1385 if (s.alpha==255 && !translucent && 1386 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1387 // the opaque region is the layer's footprint 1388 opaqueRegion = visibleRegion; 1389 } 1390 } 1391 } 1392 1393 // Clip the covered region to the visible region 1394 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1395 1396 // Update aboveCoveredLayers for next (lower) layer 1397 aboveCoveredLayers.orSelf(visibleRegion); 1398 1399 // subtract the opaque region covered by the layers above us 1400 visibleRegion.subtractSelf(aboveOpaqueLayers); 1401 1402 // compute this layer's dirty region 1403 if (layer->contentDirty) { 1404 // we need to invalidate the whole region 1405 dirty = visibleRegion; 1406 // as well, as the old visible region 1407 dirty.orSelf(layer->visibleRegion); 1408 layer->contentDirty = false; 1409 } else { 1410 /* compute the exposed region: 1411 * the exposed region consists of two components: 1412 * 1) what's VISIBLE now and was COVERED before 1413 * 2) what's EXPOSED now less what was EXPOSED before 1414 * 1415 * note that (1) is conservative, we start with the whole 1416 * visible region but only keep what used to be covered by 1417 * something -- which mean it may have been exposed. 1418 * 1419 * (2) handles areas that were not covered by anything but got 1420 * exposed because of a resize. 1421 */ 1422 const Region newExposed = visibleRegion - coveredRegion; 1423 const Region oldVisibleRegion = layer->visibleRegion; 1424 const Region oldCoveredRegion = layer->coveredRegion; 1425 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1426 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1427 } 1428 dirty.subtractSelf(aboveOpaqueLayers); 1429 1430 // accumulate to the screen dirty region 1431 outDirtyRegion.orSelf(dirty); 1432 1433 // Update aboveOpaqueLayers for next (lower) layer 1434 aboveOpaqueLayers.orSelf(opaqueRegion); 1435 1436 // Store the visible region in screen space 1437 layer->setVisibleRegion(visibleRegion); 1438 layer->setCoveredRegion(coveredRegion); 1439 layer->setVisibleNonTransparentRegion( 1440 visibleRegion.subtract(transparentRegion)); 1441 } 1442 1443 outOpaqueRegion = aboveOpaqueLayers; 1444} 1445 1446void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1447 const Region& dirty) { 1448 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1449 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1450 if (hw->getLayerStack() == layerStack) { 1451 hw->dirtyRegion.orSelf(dirty); 1452 } 1453 } 1454} 1455 1456void SurfaceFlinger::handlePageFlip() 1457{ 1458 Region dirtyRegion; 1459 1460 bool visibleRegions = false; 1461 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1462 const size_t count = currentLayers.size(); 1463 for (size_t i=0 ; i<count ; i++) { 1464 const sp<Layer>& layer(currentLayers[i]); 1465 const Region dirty(layer->latchBuffer(visibleRegions)); 1466 const Layer::State& s(layer->drawingState()); 1467 invalidateLayerStack(s.layerStack, dirty); 1468 } 1469 1470 mVisibleRegionsDirty |= visibleRegions; 1471} 1472 1473void SurfaceFlinger::invalidateHwcGeometry() 1474{ 1475 mHwWorkListDirty = true; 1476} 1477 1478 1479void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1480 const Region& inDirtyRegion) 1481{ 1482 Region dirtyRegion(inDirtyRegion); 1483 1484 // compute the invalid region 1485 hw->swapRegion.orSelf(dirtyRegion); 1486 1487 uint32_t flags = hw->getFlags(); 1488 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1489 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1490 // takes a rectangle, we must make sure to update that whole 1491 // rectangle in that case 1492 dirtyRegion.set(hw->swapRegion.bounds()); 1493 } else { 1494 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1495 // We need to redraw the rectangle that will be updated 1496 // (pushed to the framebuffer). 1497 // This is needed because PARTIAL_UPDATES only takes one 1498 // rectangle instead of a region (see DisplayDevice::flip()) 1499 dirtyRegion.set(hw->swapRegion.bounds()); 1500 } else { 1501 // we need to redraw everything (the whole screen) 1502 dirtyRegion.set(hw->bounds()); 1503 hw->swapRegion = dirtyRegion; 1504 } 1505 } 1506 1507 doComposeSurfaces(hw, dirtyRegion); 1508 1509 // update the swap region and clear the dirty region 1510 hw->swapRegion.orSelf(dirtyRegion); 1511 1512 // swap buffers (presentation) 1513 hw->swapBuffers(getHwComposer()); 1514} 1515 1516void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1517{ 1518 const int32_t id = hw->getHwcDisplayId(); 1519 HWComposer& hwc(getHwComposer()); 1520 HWComposer::LayerListIterator cur = hwc.begin(id); 1521 const HWComposer::LayerListIterator end = hwc.end(id); 1522 1523 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1524 if (hasGlesComposition) { 1525 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1526 1527 // set the frame buffer 1528 glMatrixMode(GL_MODELVIEW); 1529 glLoadIdentity(); 1530 1531 // Never touch the framebuffer if we don't have any framebuffer layers 1532 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1533 if (hasHwcComposition) { 1534 // when using overlays, we assume a fully transparent framebuffer 1535 // NOTE: we could reduce how much we need to clear, for instance 1536 // remove where there are opaque FB layers. however, on some 1537 // GPUs doing a "clean slate" glClear might be more efficient. 1538 // We'll revisit later if needed. 1539 glClearColor(0, 0, 0, 0); 1540 glClear(GL_COLOR_BUFFER_BIT); 1541 } else { 1542 // we start with the whole screen area 1543 const Region bounds(hw->getBounds()); 1544 1545 // we remove the scissor part 1546 // we're left with the letterbox region 1547 // (common case is that letterbox ends-up being empty) 1548 const Region letterbox(bounds.subtract(hw->getScissor())); 1549 1550 // compute the area to clear 1551 Region region(hw->undefinedRegion.merge(letterbox)); 1552 1553 // but limit it to the dirty region 1554 region.andSelf(dirty); 1555 1556 // screen is already cleared here 1557 if (!region.isEmpty()) { 1558 // can happen with SurfaceView 1559 drawWormhole(hw, region); 1560 } 1561 } 1562 1563 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 1564 // just to be on the safe side, we don't set the 1565 // scissor on the main display. It should never be needed 1566 // anyways (though in theory it could since the API allows it). 1567 const Rect& bounds(hw->getBounds()); 1568 const Rect& scissor(hw->getScissor()); 1569 if (scissor != bounds) { 1570 // scissor doesn't match the screen's dimensions, so we 1571 // need to clear everything outside of it and enable 1572 // the GL scissor so we don't draw anything where we shouldn't 1573 const GLint height = hw->getHeight(); 1574 glScissor(scissor.left, height - scissor.bottom, 1575 scissor.getWidth(), scissor.getHeight()); 1576 // enable scissor for this frame 1577 glEnable(GL_SCISSOR_TEST); 1578 } 1579 } 1580 } 1581 1582 /* 1583 * and then, render the layers targeted at the framebuffer 1584 */ 1585 1586 const Vector< sp<Layer> >& layers(hw->getVisibleLayersSortedByZ()); 1587 const size_t count = layers.size(); 1588 const Transform& tr = hw->getTransform(); 1589 if (cur != end) { 1590 // we're using h/w composer 1591 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1592 const sp<Layer>& layer(layers[i]); 1593 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1594 if (!clip.isEmpty()) { 1595 switch (cur->getCompositionType()) { 1596 case HWC_OVERLAY: { 1597 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1598 && i 1599 && layer->isOpaque() 1600 && hasGlesComposition) { 1601 // never clear the very first layer since we're 1602 // guaranteed the FB is already cleared 1603 layer->clearWithOpenGL(hw, clip); 1604 } 1605 break; 1606 } 1607 case HWC_FRAMEBUFFER: { 1608 layer->draw(hw, clip); 1609 break; 1610 } 1611 case HWC_FRAMEBUFFER_TARGET: { 1612 // this should not happen as the iterator shouldn't 1613 // let us get there. 1614 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1615 break; 1616 } 1617 } 1618 } 1619 layer->setAcquireFence(hw, *cur); 1620 } 1621 } else { 1622 // we're not using h/w composer 1623 for (size_t i=0 ; i<count ; ++i) { 1624 const sp<Layer>& layer(layers[i]); 1625 const Region clip(dirty.intersect( 1626 tr.transform(layer->visibleRegion))); 1627 if (!clip.isEmpty()) { 1628 layer->draw(hw, clip); 1629 } 1630 } 1631 } 1632 1633 // disable scissor at the end of the frame 1634 glDisable(GL_SCISSOR_TEST); 1635} 1636 1637void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1638 const Region& region) const 1639{ 1640 glDisable(GL_TEXTURE_EXTERNAL_OES); 1641 glDisable(GL_TEXTURE_2D); 1642 glDisable(GL_BLEND); 1643 glColor4f(0,0,0,0); 1644 1645 const int32_t height = hw->getHeight(); 1646 Region::const_iterator it = region.begin(); 1647 Region::const_iterator const end = region.end(); 1648 while (it != end) { 1649 const Rect& r = *it++; 1650 GLfloat vertices[][2] = { 1651 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 1652 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 1653 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 1654 { (GLfloat) r.right, (GLfloat) (height - r.top) } 1655 }; 1656 glVertexPointer(2, GL_FLOAT, 0, vertices); 1657 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1658 } 1659} 1660 1661void SurfaceFlinger::addClientLayer(const sp<Client>& client, 1662 const sp<IBinder>& handle, 1663 const sp<IGraphicBufferProducer>& gbc, 1664 const sp<Layer>& lbc) 1665{ 1666 // attach this layer to the client 1667 client->attachLayer(handle, lbc); 1668 1669 // add this layer to the current state list 1670 Mutex::Autolock _l(mStateLock); 1671 mCurrentState.layersSortedByZ.add(lbc); 1672 mGraphicBufferProducerList.add(gbc->asBinder()); 1673} 1674 1675status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) 1676{ 1677 Mutex::Autolock _l(mStateLock); 1678 ssize_t index = mCurrentState.layersSortedByZ.remove(layer); 1679 if (index >= 0) { 1680 mLayersPendingRemoval.push(layer); 1681 mLayersRemoved = true; 1682 setTransactionFlags(eTransactionNeeded); 1683 return NO_ERROR; 1684 } 1685 return status_t(index); 1686} 1687 1688uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1689{ 1690 return android_atomic_release_load(&mTransactionFlags); 1691} 1692 1693uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1694{ 1695 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1696} 1697 1698uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1699{ 1700 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1701 if ((old & flags)==0) { // wake the server up 1702 signalTransaction(); 1703 } 1704 return old; 1705} 1706 1707void SurfaceFlinger::setTransactionState( 1708 const Vector<ComposerState>& state, 1709 const Vector<DisplayState>& displays, 1710 uint32_t flags) 1711{ 1712 ATRACE_CALL(); 1713 Mutex::Autolock _l(mStateLock); 1714 uint32_t transactionFlags = 0; 1715 1716 if (flags & eAnimation) { 1717 // For window updates that are part of an animation we must wait for 1718 // previous animation "frames" to be handled. 1719 while (mAnimTransactionPending) { 1720 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1721 if (CC_UNLIKELY(err != NO_ERROR)) { 1722 // just in case something goes wrong in SF, return to the 1723 // caller after a few seconds. 1724 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1725 "waiting for previous animation frame"); 1726 mAnimTransactionPending = false; 1727 break; 1728 } 1729 } 1730 } 1731 1732 size_t count = displays.size(); 1733 for (size_t i=0 ; i<count ; i++) { 1734 const DisplayState& s(displays[i]); 1735 transactionFlags |= setDisplayStateLocked(s); 1736 } 1737 1738 count = state.size(); 1739 for (size_t i=0 ; i<count ; i++) { 1740 const ComposerState& s(state[i]); 1741 // Here we need to check that the interface we're given is indeed 1742 // one of our own. A malicious client could give us a NULL 1743 // IInterface, or one of its own or even one of our own but a 1744 // different type. All these situations would cause us to crash. 1745 // 1746 // NOTE: it would be better to use RTTI as we could directly check 1747 // that we have a Client*. however, RTTI is disabled in Android. 1748 if (s.client != NULL) { 1749 sp<IBinder> binder = s.client->asBinder(); 1750 if (binder != NULL) { 1751 String16 desc(binder->getInterfaceDescriptor()); 1752 if (desc == ISurfaceComposerClient::descriptor) { 1753 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1754 transactionFlags |= setClientStateLocked(client, s.state); 1755 } 1756 } 1757 } 1758 } 1759 1760 if (transactionFlags) { 1761 // this triggers the transaction 1762 setTransactionFlags(transactionFlags); 1763 1764 // if this is a synchronous transaction, wait for it to take effect 1765 // before returning. 1766 if (flags & eSynchronous) { 1767 mTransactionPending = true; 1768 } 1769 if (flags & eAnimation) { 1770 mAnimTransactionPending = true; 1771 } 1772 while (mTransactionPending) { 1773 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1774 if (CC_UNLIKELY(err != NO_ERROR)) { 1775 // just in case something goes wrong in SF, return to the 1776 // called after a few seconds. 1777 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1778 mTransactionPending = false; 1779 break; 1780 } 1781 } 1782 } 1783} 1784 1785uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1786{ 1787 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1788 if (dpyIdx < 0) 1789 return 0; 1790 1791 uint32_t flags = 0; 1792 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1793 if (disp.isValid()) { 1794 const uint32_t what = s.what; 1795 if (what & DisplayState::eSurfaceChanged) { 1796 if (disp.surface->asBinder() != s.surface->asBinder()) { 1797 disp.surface = s.surface; 1798 flags |= eDisplayTransactionNeeded; 1799 } 1800 } 1801 if (what & DisplayState::eLayerStackChanged) { 1802 if (disp.layerStack != s.layerStack) { 1803 disp.layerStack = s.layerStack; 1804 flags |= eDisplayTransactionNeeded; 1805 } 1806 } 1807 if (what & DisplayState::eDisplayProjectionChanged) { 1808 if (disp.orientation != s.orientation) { 1809 disp.orientation = s.orientation; 1810 flags |= eDisplayTransactionNeeded; 1811 } 1812 if (disp.frame != s.frame) { 1813 disp.frame = s.frame; 1814 flags |= eDisplayTransactionNeeded; 1815 } 1816 if (disp.viewport != s.viewport) { 1817 disp.viewport = s.viewport; 1818 flags |= eDisplayTransactionNeeded; 1819 } 1820 } 1821 } 1822 return flags; 1823} 1824 1825uint32_t SurfaceFlinger::setClientStateLocked( 1826 const sp<Client>& client, 1827 const layer_state_t& s) 1828{ 1829 uint32_t flags = 0; 1830 sp<Layer> layer(client->getLayerUser(s.surface)); 1831 if (layer != 0) { 1832 const uint32_t what = s.what; 1833 if (what & layer_state_t::ePositionChanged) { 1834 if (layer->setPosition(s.x, s.y)) 1835 flags |= eTraversalNeeded; 1836 } 1837 if (what & layer_state_t::eLayerChanged) { 1838 // NOTE: index needs to be calculated before we update the state 1839 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1840 if (layer->setLayer(s.z)) { 1841 mCurrentState.layersSortedByZ.removeAt(idx); 1842 mCurrentState.layersSortedByZ.add(layer); 1843 // we need traversal (state changed) 1844 // AND transaction (list changed) 1845 flags |= eTransactionNeeded|eTraversalNeeded; 1846 } 1847 } 1848 if (what & layer_state_t::eSizeChanged) { 1849 if (layer->setSize(s.w, s.h)) { 1850 flags |= eTraversalNeeded; 1851 } 1852 } 1853 if (what & layer_state_t::eAlphaChanged) { 1854 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1855 flags |= eTraversalNeeded; 1856 } 1857 if (what & layer_state_t::eMatrixChanged) { 1858 if (layer->setMatrix(s.matrix)) 1859 flags |= eTraversalNeeded; 1860 } 1861 if (what & layer_state_t::eTransparentRegionChanged) { 1862 if (layer->setTransparentRegionHint(s.transparentRegion)) 1863 flags |= eTraversalNeeded; 1864 } 1865 if (what & layer_state_t::eVisibilityChanged) { 1866 if (layer->setFlags(s.flags, s.mask)) 1867 flags |= eTraversalNeeded; 1868 } 1869 if (what & layer_state_t::eCropChanged) { 1870 if (layer->setCrop(s.crop)) 1871 flags |= eTraversalNeeded; 1872 } 1873 if (what & layer_state_t::eLayerStackChanged) { 1874 // NOTE: index needs to be calculated before we update the state 1875 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1876 if (layer->setLayerStack(s.layerStack)) { 1877 mCurrentState.layersSortedByZ.removeAt(idx); 1878 mCurrentState.layersSortedByZ.add(layer); 1879 // we need traversal (state changed) 1880 // AND transaction (list changed) 1881 flags |= eTransactionNeeded|eTraversalNeeded; 1882 } 1883 } 1884 } 1885 return flags; 1886} 1887 1888status_t SurfaceFlinger::createLayer( 1889 const String8& name, 1890 const sp<Client>& client, 1891 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 1892 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp) 1893{ 1894 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1895 if (int32_t(w|h) < 0) { 1896 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1897 int(w), int(h)); 1898 return BAD_VALUE; 1899 } 1900 1901 status_t result = NO_ERROR; 1902 1903 sp<Layer> layer; 1904 1905 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1906 case ISurfaceComposerClient::eFXSurfaceNormal: 1907 result = createNormalLayer(client, 1908 name, w, h, flags, format, 1909 handle, gbp, &layer); 1910 break; 1911 case ISurfaceComposerClient::eFXSurfaceDim: 1912 result = createDimLayer(client, 1913 name, w, h, flags, 1914 handle, gbp, &layer); 1915 break; 1916 default: 1917 result = BAD_VALUE; 1918 break; 1919 } 1920 1921 if (result == NO_ERROR) { 1922 addClientLayer(client, *handle, *gbp, layer); 1923 setTransactionFlags(eTransactionNeeded); 1924 } 1925 return result; 1926} 1927 1928status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client, 1929 const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 1930 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1931{ 1932 // initialize the surfaces 1933 switch (format) { 1934 case PIXEL_FORMAT_TRANSPARENT: 1935 case PIXEL_FORMAT_TRANSLUCENT: 1936 format = PIXEL_FORMAT_RGBA_8888; 1937 break; 1938 case PIXEL_FORMAT_OPAQUE: 1939#ifdef NO_RGBX_8888 1940 format = PIXEL_FORMAT_RGB_565; 1941#else 1942 format = PIXEL_FORMAT_RGBX_8888; 1943#endif 1944 break; 1945 } 1946 1947#ifdef NO_RGBX_8888 1948 if (format == PIXEL_FORMAT_RGBX_8888) 1949 format = PIXEL_FORMAT_RGBA_8888; 1950#endif 1951 1952 *outLayer = new Layer(this, client, name, w, h, flags); 1953 status_t err = (*outLayer)->setBuffers(w, h, format, flags); 1954 if (err == NO_ERROR) { 1955 *handle = (*outLayer)->getHandle(); 1956 *gbp = (*outLayer)->getBufferQueue(); 1957 } 1958 1959 ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); 1960 return err; 1961} 1962 1963status_t SurfaceFlinger::createDimLayer(const sp<Client>& client, 1964 const String8& name, uint32_t w, uint32_t h, uint32_t flags, 1965 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1966{ 1967 *outLayer = new LayerDim(this, client, name, w, h, flags); 1968 *handle = (*outLayer)->getHandle(); 1969 *gbp = (*outLayer)->getBufferQueue(); 1970 return NO_ERROR; 1971} 1972 1973status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle) 1974{ 1975 // called by the window manager when it wants to remove a Layer 1976 status_t err = NO_ERROR; 1977 sp<Layer> l(client->getLayerUser(handle)); 1978 if (l != NULL) { 1979 err = removeLayer(l); 1980 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1981 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1982 } 1983 return err; 1984} 1985 1986status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer) 1987{ 1988 // called by ~LayerCleaner() when all references to the IBinder (handle) 1989 // are gone 1990 status_t err = NO_ERROR; 1991 sp<Layer> l(layer.promote()); 1992 if (l != NULL) { 1993 err = removeLayer(l); 1994 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1995 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1996 } 1997 return err; 1998} 1999 2000// --------------------------------------------------------------------------- 2001 2002void SurfaceFlinger::onInitializeDisplays() { 2003 // reset screen orientation and use primary layer stack 2004 Vector<ComposerState> state; 2005 Vector<DisplayState> displays; 2006 DisplayState d; 2007 d.what = DisplayState::eDisplayProjectionChanged | 2008 DisplayState::eLayerStackChanged; 2009 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2010 d.layerStack = 0; 2011 d.orientation = DisplayState::eOrientationDefault; 2012 d.frame.makeInvalid(); 2013 d.viewport.makeInvalid(); 2014 displays.add(d); 2015 setTransactionState(state, displays, 0); 2016 onScreenAcquired(getDefaultDisplayDevice()); 2017} 2018 2019void SurfaceFlinger::initializeDisplays() { 2020 class MessageScreenInitialized : public MessageBase { 2021 SurfaceFlinger* flinger; 2022 public: 2023 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2024 virtual bool handler() { 2025 flinger->onInitializeDisplays(); 2026 return true; 2027 } 2028 }; 2029 sp<MessageBase> msg = new MessageScreenInitialized(this); 2030 postMessageAsync(msg); // we may be called from main thread, use async message 2031} 2032 2033 2034void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2035 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2036 if (hw->isScreenAcquired()) { 2037 // this is expected, e.g. when power manager wakes up during boot 2038 ALOGD(" screen was previously acquired"); 2039 return; 2040 } 2041 2042 hw->acquireScreen(); 2043 int32_t type = hw->getDisplayType(); 2044 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2045 // built-in display, tell the HWC 2046 getHwComposer().acquire(type); 2047 2048 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2049 // FIXME: eventthread only knows about the main display right now 2050 mEventThread->onScreenAcquired(); 2051 } 2052 } 2053 mVisibleRegionsDirty = true; 2054 repaintEverything(); 2055} 2056 2057void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2058 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2059 if (!hw->isScreenAcquired()) { 2060 ALOGD(" screen was previously released"); 2061 return; 2062 } 2063 2064 hw->releaseScreen(); 2065 int32_t type = hw->getDisplayType(); 2066 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2067 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2068 // FIXME: eventthread only knows about the main display right now 2069 mEventThread->onScreenReleased(); 2070 } 2071 2072 // built-in display, tell the HWC 2073 getHwComposer().release(type); 2074 } 2075 mVisibleRegionsDirty = true; 2076 // from this point on, SF will stop drawing on this display 2077} 2078 2079void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2080 class MessageScreenAcquired : public MessageBase { 2081 SurfaceFlinger& mFlinger; 2082 sp<IBinder> mDisplay; 2083 public: 2084 MessageScreenAcquired(SurfaceFlinger& flinger, 2085 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2086 virtual bool handler() { 2087 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2088 if (hw == NULL) { 2089 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2090 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2091 ALOGW("Attempt to unblank virtual display"); 2092 } else { 2093 mFlinger.onScreenAcquired(hw); 2094 } 2095 return true; 2096 } 2097 }; 2098 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2099 postMessageSync(msg); 2100} 2101 2102void SurfaceFlinger::blank(const sp<IBinder>& display) { 2103 class MessageScreenReleased : public MessageBase { 2104 SurfaceFlinger& mFlinger; 2105 sp<IBinder> mDisplay; 2106 public: 2107 MessageScreenReleased(SurfaceFlinger& flinger, 2108 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2109 virtual bool handler() { 2110 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2111 if (hw == NULL) { 2112 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2113 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2114 ALOGW("Attempt to blank virtual display"); 2115 } else { 2116 mFlinger.onScreenReleased(hw); 2117 } 2118 return true; 2119 } 2120 }; 2121 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2122 postMessageSync(msg); 2123} 2124 2125// --------------------------------------------------------------------------- 2126 2127status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2128{ 2129 const size_t SIZE = 4096; 2130 char buffer[SIZE]; 2131 String8 result; 2132 2133 if (!PermissionCache::checkCallingPermission(sDump)) { 2134 snprintf(buffer, SIZE, "Permission Denial: " 2135 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2136 IPCThreadState::self()->getCallingPid(), 2137 IPCThreadState::self()->getCallingUid()); 2138 result.append(buffer); 2139 } else { 2140 // Try to get the main lock, but don't insist if we can't 2141 // (this would indicate SF is stuck, but we want to be able to 2142 // print something in dumpsys). 2143 int retry = 3; 2144 while (mStateLock.tryLock()<0 && --retry>=0) { 2145 usleep(1000000); 2146 } 2147 const bool locked(retry >= 0); 2148 if (!locked) { 2149 snprintf(buffer, SIZE, 2150 "SurfaceFlinger appears to be unresponsive, " 2151 "dumping anyways (no locks held)\n"); 2152 result.append(buffer); 2153 } 2154 2155 bool dumpAll = true; 2156 size_t index = 0; 2157 size_t numArgs = args.size(); 2158 if (numArgs) { 2159 if ((index < numArgs) && 2160 (args[index] == String16("--list"))) { 2161 index++; 2162 listLayersLocked(args, index, result, buffer, SIZE); 2163 dumpAll = false; 2164 } 2165 2166 if ((index < numArgs) && 2167 (args[index] == String16("--latency"))) { 2168 index++; 2169 dumpStatsLocked(args, index, result, buffer, SIZE); 2170 dumpAll = false; 2171 } 2172 2173 if ((index < numArgs) && 2174 (args[index] == String16("--latency-clear"))) { 2175 index++; 2176 clearStatsLocked(args, index, result, buffer, SIZE); 2177 dumpAll = false; 2178 } 2179 } 2180 2181 if (dumpAll) { 2182 dumpAllLocked(result, buffer, SIZE); 2183 } 2184 2185 if (locked) { 2186 mStateLock.unlock(); 2187 } 2188 } 2189 write(fd, result.string(), result.size()); 2190 return NO_ERROR; 2191} 2192 2193void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2194 String8& result, char* buffer, size_t SIZE) const 2195{ 2196 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2197 const size_t count = currentLayers.size(); 2198 for (size_t i=0 ; i<count ; i++) { 2199 const sp<Layer>& layer(currentLayers[i]); 2200 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2201 result.append(buffer); 2202 } 2203} 2204 2205void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2206 String8& result, char* buffer, size_t SIZE) const 2207{ 2208 String8 name; 2209 if (index < args.size()) { 2210 name = String8(args[index]); 2211 index++; 2212 } 2213 2214 const nsecs_t period = 2215 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 2216 result.appendFormat("%lld\n", period); 2217 2218 if (name.isEmpty()) { 2219 mAnimFrameTracker.dump(result); 2220 } else { 2221 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2222 const size_t count = currentLayers.size(); 2223 for (size_t i=0 ; i<count ; i++) { 2224 const sp<Layer>& layer(currentLayers[i]); 2225 if (name == layer->getName()) { 2226 layer->dumpStats(result, buffer, SIZE); 2227 } 2228 } 2229 } 2230} 2231 2232void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2233 String8& result, char* buffer, size_t SIZE) 2234{ 2235 String8 name; 2236 if (index < args.size()) { 2237 name = String8(args[index]); 2238 index++; 2239 } 2240 2241 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2242 const size_t count = currentLayers.size(); 2243 for (size_t i=0 ; i<count ; i++) { 2244 const sp<Layer>& layer(currentLayers[i]); 2245 if (name.isEmpty() || (name == layer->getName())) { 2246 layer->clearStats(); 2247 } 2248 } 2249 2250 mAnimFrameTracker.clear(); 2251} 2252 2253/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2254{ 2255 static const char* config = 2256 " [sf" 2257#ifdef NO_RGBX_8888 2258 " NO_RGBX_8888" 2259#endif 2260#ifdef HAS_CONTEXT_PRIORITY 2261 " HAS_CONTEXT_PRIORITY" 2262#endif 2263#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2264 " NEVER_DEFAULT_TO_ASYNC_MODE" 2265#endif 2266#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2267 " TARGET_DISABLE_TRIPLE_BUFFERING" 2268#endif 2269 "]"; 2270 result.append(config); 2271} 2272 2273void SurfaceFlinger::dumpAllLocked( 2274 String8& result, char* buffer, size_t SIZE) const 2275{ 2276 // figure out if we're stuck somewhere 2277 const nsecs_t now = systemTime(); 2278 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2279 const nsecs_t inTransaction(mDebugInTransaction); 2280 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2281 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2282 2283 /* 2284 * Dump library configuration. 2285 */ 2286 result.append("Build configuration:"); 2287 appendSfConfigString(result); 2288 appendUiConfigString(result); 2289 appendGuiConfigString(result); 2290 result.append("\n"); 2291 2292 /* 2293 * Dump the visible layer list 2294 */ 2295 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2296 const size_t count = currentLayers.size(); 2297 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2298 result.append(buffer); 2299 for (size_t i=0 ; i<count ; i++) { 2300 const sp<Layer>& layer(currentLayers[i]); 2301 layer->dump(result, buffer, SIZE); 2302 } 2303 2304 /* 2305 * Dump Display state 2306 */ 2307 2308 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2309 result.append(buffer); 2310 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2311 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2312 hw->dump(result, buffer, SIZE); 2313 } 2314 2315 /* 2316 * Dump SurfaceFlinger global state 2317 */ 2318 2319 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2320 result.append(buffer); 2321 2322 HWComposer& hwc(getHwComposer()); 2323 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2324 const GLExtensions& extensions(GLExtensions::getInstance()); 2325 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2326 extensions.getVendor(), 2327 extensions.getRenderer(), 2328 extensions.getVersion()); 2329 result.append(buffer); 2330 2331 snprintf(buffer, SIZE, "EGL : %s\n", 2332 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2333 result.append(buffer); 2334 2335 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2336 result.append(buffer); 2337 2338 hw->undefinedRegion.dump(result, "undefinedRegion"); 2339 snprintf(buffer, SIZE, 2340 " orientation=%d, canDraw=%d\n", 2341 hw->getOrientation(), hw->canDraw()); 2342 result.append(buffer); 2343 snprintf(buffer, SIZE, 2344 " last eglSwapBuffers() time: %f us\n" 2345 " last transaction time : %f us\n" 2346 " transaction-flags : %08x\n" 2347 " refresh-rate : %f fps\n" 2348 " x-dpi : %f\n" 2349 " y-dpi : %f\n" 2350 " EGL_NATIVE_VISUAL_ID : %d\n" 2351 " gpu_to_cpu_unsupported : %d\n" 2352 , 2353 mLastSwapBufferTime/1000.0, 2354 mLastTransactionTime/1000.0, 2355 mTransactionFlags, 2356 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2357 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2358 hwc.getDpiY(HWC_DISPLAY_PRIMARY), 2359 mEGLNativeVisualId, 2360 !mGpuToCpuSupported); 2361 result.append(buffer); 2362 2363 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2364 inSwapBuffersDuration/1000.0); 2365 result.append(buffer); 2366 2367 snprintf(buffer, SIZE, " transaction time: %f us\n", 2368 inTransactionDuration/1000.0); 2369 result.append(buffer); 2370 2371 /* 2372 * VSYNC state 2373 */ 2374 mEventThread->dump(result, buffer, SIZE); 2375 2376 /* 2377 * Dump HWComposer state 2378 */ 2379 snprintf(buffer, SIZE, "h/w composer state:\n"); 2380 result.append(buffer); 2381 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2382 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2383 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2384 result.append(buffer); 2385 hwc.dump(result, buffer, SIZE); 2386 2387 /* 2388 * Dump gralloc state 2389 */ 2390 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2391 alloc.dump(result); 2392} 2393 2394const Vector< sp<Layer> >& 2395SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { 2396 // Note: mStateLock is held here 2397 wp<IBinder> dpy; 2398 for (size_t i=0 ; i<mDisplays.size() ; i++) { 2399 if (mDisplays.valueAt(i)->getHwcDisplayId() == id) { 2400 dpy = mDisplays.keyAt(i); 2401 break; 2402 } 2403 } 2404 if (dpy == NULL) { 2405 ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); 2406 // Just use the primary display so we have something to return 2407 dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); 2408 } 2409 return getDisplayDevice(dpy)->getVisibleLayersSortedByZ(); 2410} 2411 2412bool SurfaceFlinger::startDdmConnection() 2413{ 2414 void* libddmconnection_dso = 2415 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2416 if (!libddmconnection_dso) { 2417 return false; 2418 } 2419 void (*DdmConnection_start)(const char* name); 2420 DdmConnection_start = 2421 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2422 if (!DdmConnection_start) { 2423 dlclose(libddmconnection_dso); 2424 return false; 2425 } 2426 (*DdmConnection_start)(getServiceName()); 2427 return true; 2428} 2429 2430status_t SurfaceFlinger::onTransact( 2431 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2432{ 2433 switch (code) { 2434 case CREATE_CONNECTION: 2435 case CREATE_DISPLAY: 2436 case SET_TRANSACTION_STATE: 2437 case BOOT_FINISHED: 2438 case BLANK: 2439 case UNBLANK: 2440 { 2441 // codes that require permission check 2442 IPCThreadState* ipc = IPCThreadState::self(); 2443 const int pid = ipc->getCallingPid(); 2444 const int uid = ipc->getCallingUid(); 2445 if ((uid != AID_GRAPHICS) && 2446 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2447 ALOGE("Permission Denial: " 2448 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2449 return PERMISSION_DENIED; 2450 } 2451 break; 2452 } 2453 case CAPTURE_SCREEN: 2454 { 2455 // codes that require permission check 2456 IPCThreadState* ipc = IPCThreadState::self(); 2457 const int pid = ipc->getCallingPid(); 2458 const int uid = ipc->getCallingUid(); 2459 if ((uid != AID_GRAPHICS) && 2460 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2461 ALOGE("Permission Denial: " 2462 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2463 return PERMISSION_DENIED; 2464 } 2465 break; 2466 } 2467 } 2468 2469 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2470 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2471 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2472 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2473 IPCThreadState* ipc = IPCThreadState::self(); 2474 const int pid = ipc->getCallingPid(); 2475 const int uid = ipc->getCallingUid(); 2476 ALOGE("Permission Denial: " 2477 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2478 return PERMISSION_DENIED; 2479 } 2480 int n; 2481 switch (code) { 2482 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2483 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2484 return NO_ERROR; 2485 case 1002: // SHOW_UPDATES 2486 n = data.readInt32(); 2487 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2488 invalidateHwcGeometry(); 2489 repaintEverything(); 2490 return NO_ERROR; 2491 case 1004:{ // repaint everything 2492 repaintEverything(); 2493 return NO_ERROR; 2494 } 2495 case 1005:{ // force transaction 2496 setTransactionFlags( 2497 eTransactionNeeded| 2498 eDisplayTransactionNeeded| 2499 eTraversalNeeded); 2500 return NO_ERROR; 2501 } 2502 case 1006:{ // send empty update 2503 signalRefresh(); 2504 return NO_ERROR; 2505 } 2506 case 1008: // toggle use of hw composer 2507 n = data.readInt32(); 2508 mDebugDisableHWC = n ? 1 : 0; 2509 invalidateHwcGeometry(); 2510 repaintEverything(); 2511 return NO_ERROR; 2512 case 1009: // toggle use of transform hint 2513 n = data.readInt32(); 2514 mDebugDisableTransformHint = n ? 1 : 0; 2515 invalidateHwcGeometry(); 2516 repaintEverything(); 2517 return NO_ERROR; 2518 case 1010: // interrogate. 2519 reply->writeInt32(0); 2520 reply->writeInt32(0); 2521 reply->writeInt32(mDebugRegion); 2522 reply->writeInt32(0); 2523 reply->writeInt32(mDebugDisableHWC); 2524 return NO_ERROR; 2525 case 1013: { 2526 Mutex::Autolock _l(mStateLock); 2527 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2528 reply->writeInt32(hw->getPageFlipCount()); 2529 } 2530 return NO_ERROR; 2531 } 2532 } 2533 return err; 2534} 2535 2536void SurfaceFlinger::repaintEverything() { 2537 android_atomic_or(1, &mRepaintEverything); 2538 signalTransaction(); 2539} 2540 2541// --------------------------------------------------------------------------- 2542// Capture screen into an IGraphiBufferProducer 2543// --------------------------------------------------------------------------- 2544 2545status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2546 const sp<IGraphicBufferProducer>& producer, 2547 uint32_t reqWidth, uint32_t reqHeight, 2548 uint32_t minLayerZ, uint32_t maxLayerZ, 2549 bool isCpuConsumer) { 2550 2551 if (CC_UNLIKELY(display == 0)) 2552 return BAD_VALUE; 2553 2554 if (CC_UNLIKELY(producer == 0)) 2555 return BAD_VALUE; 2556 2557 class MessageCaptureScreen : public MessageBase { 2558 SurfaceFlinger* flinger; 2559 sp<IBinder> display; 2560 sp<IGraphicBufferProducer> producer; 2561 uint32_t reqWidth, reqHeight; 2562 uint32_t minLayerZ,maxLayerZ; 2563 bool isCpuConsumer; 2564 status_t result; 2565 public: 2566 MessageCaptureScreen(SurfaceFlinger* flinger, 2567 const sp<IBinder>& display, 2568 const sp<IGraphicBufferProducer>& producer, 2569 uint32_t reqWidth, uint32_t reqHeight, 2570 uint32_t minLayerZ, uint32_t maxLayerZ, bool isCpuConsumer) 2571 : flinger(flinger), display(display), producer(producer), 2572 reqWidth(reqWidth), reqHeight(reqHeight), 2573 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2574 isCpuConsumer(isCpuConsumer), 2575 result(PERMISSION_DENIED) 2576 { 2577 } 2578 status_t getResult() const { 2579 return result; 2580 } 2581 virtual bool handler() { 2582 Mutex::Autolock _l(flinger->mStateLock); 2583 sp<const DisplayDevice> hw(flinger->getDisplayDevice(display)); 2584 2585 bool useReadPixels = false; 2586 if (isCpuConsumer) { 2587 bool formatSupportedBytBitmap = 2588 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBA_8888) || 2589 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBX_8888); 2590 if (formatSupportedBytBitmap == false) { 2591 // the pixel format we have is not compatible with 2592 // Bitmap.java, which is the likely client of this API, 2593 // so we just revert to glReadPixels() in that case. 2594 useReadPixels = true; 2595 } 2596 if (flinger->mGpuToCpuSupported == false) { 2597 // When we know the GL->CPU path works, we can call 2598 // captureScreenImplLocked() directly, instead of using the 2599 // glReadPixels() workaround. 2600 useReadPixels = true; 2601 } 2602 } 2603 2604 if (!useReadPixels) { 2605 result = flinger->captureScreenImplLocked(hw, 2606 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2607 } else { 2608 result = flinger->captureScreenImplCpuConsumerLocked(hw, 2609 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2610 } 2611 return true; 2612 } 2613 }; 2614 2615 sp<MessageBase> msg = new MessageCaptureScreen(this, 2616 display, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ, 2617 isCpuConsumer); 2618 status_t res = postMessageSync(msg); 2619 if (res == NO_ERROR) { 2620 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2621 } 2622 return res; 2623} 2624 2625status_t SurfaceFlinger::captureScreenImplLocked( 2626 const sp<const DisplayDevice>& hw, 2627 const sp<IGraphicBufferProducer>& producer, 2628 uint32_t reqWidth, uint32_t reqHeight, 2629 uint32_t minLayerZ, uint32_t maxLayerZ) 2630{ 2631 ATRACE_CALL(); 2632 2633 // get screen geometry 2634 const uint32_t hw_w = hw->getWidth(); 2635 const uint32_t hw_h = hw->getHeight(); 2636 2637 // if we have secure windows on this display, never allow the screen capture 2638 if (hw->getSecureLayerVisible()) { 2639 ALOGW("FB is protected: PERMISSION_DENIED"); 2640 return PERMISSION_DENIED; 2641 } 2642 2643 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2644 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2645 reqWidth, reqHeight, hw_w, hw_h); 2646 return BAD_VALUE; 2647 } 2648 2649 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2650 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2651 const bool filtering = reqWidth != hw_w || reqWidth != hw_h; 2652 2653 // Create a surface to render into 2654 sp<Surface> surface = new Surface(producer); 2655 ANativeWindow* const window = surface.get(); 2656 2657 // set the buffer size to what the user requested 2658 native_window_set_buffers_user_dimensions(window, reqWidth, reqHeight); 2659 2660 // and create the corresponding EGLSurface 2661 EGLSurface eglSurface = eglCreateWindowSurface( 2662 mEGLDisplay, mEGLConfig, window, NULL); 2663 if (eglSurface == EGL_NO_SURFACE) { 2664 ALOGE("captureScreenImplLocked: eglCreateWindowSurface() failed 0x%4x", 2665 eglGetError()); 2666 return BAD_VALUE; 2667 } 2668 2669 if (!eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) { 2670 ALOGE("captureScreenImplLocked: eglMakeCurrent() failed 0x%4x", 2671 eglGetError()); 2672 eglDestroySurface(mEGLDisplay, eglSurface); 2673 return BAD_VALUE; 2674 } 2675 2676 // make sure to clear all GL error flags 2677 while ( glGetError() != GL_NO_ERROR ) ; 2678 2679 // set-up our viewport 2680 glViewport(0, 0, reqWidth, reqHeight); 2681 glMatrixMode(GL_PROJECTION); 2682 glLoadIdentity(); 2683 glOrthof(0, hw_w, 0, hw_h, 0, 1); 2684 glMatrixMode(GL_MODELVIEW); 2685 glLoadIdentity(); 2686 2687 // redraw the screen entirely... 2688 glDisable(GL_TEXTURE_EXTERNAL_OES); 2689 glDisable(GL_TEXTURE_2D); 2690 glClearColor(0,0,0,1); 2691 glClear(GL_COLOR_BUFFER_BIT); 2692 2693 const LayerVector& layers( mDrawingState.layersSortedByZ ); 2694 const size_t count = layers.size(); 2695 for (size_t i=0 ; i<count ; ++i) { 2696 const sp<Layer>& layer(layers[i]); 2697 const Layer::State& state(layer->drawingState()); 2698 if (state.layerStack == hw->getLayerStack()) { 2699 if (state.z >= minLayerZ && state.z <= maxLayerZ) { 2700 if (layer->isVisible()) { 2701 if (filtering) layer->setFiltering(true); 2702 layer->draw(hw); 2703 if (filtering) layer->setFiltering(false); 2704 } 2705 } 2706 } 2707 } 2708 2709 // compositionComplete is needed for older driver 2710 hw->compositionComplete(); 2711 2712 // and finishing things up... 2713 if (eglSwapBuffers(mEGLDisplay, eglSurface) != EGL_TRUE) { 2714 ALOGE("captureScreenImplLocked: eglSwapBuffers() failed 0x%4x", 2715 eglGetError()); 2716 eglDestroySurface(mEGLDisplay, eglSurface); 2717 return BAD_VALUE; 2718 } 2719 2720 eglDestroySurface(mEGLDisplay, eglSurface); 2721 2722 return NO_ERROR; 2723} 2724 2725 2726status_t SurfaceFlinger::captureScreenImplCpuConsumerLocked( 2727 const sp<const DisplayDevice>& hw, 2728 const sp<IGraphicBufferProducer>& producer, 2729 uint32_t reqWidth, uint32_t reqHeight, 2730 uint32_t minLayerZ, uint32_t maxLayerZ) 2731{ 2732 ATRACE_CALL(); 2733 2734 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2735 return INVALID_OPERATION; 2736 } 2737 2738 // create the texture that will receive the screenshot, later we'll 2739 // attach a FBO to it so we can call glReadPixels(). 2740 GLuint tname; 2741 glGenTextures(1, &tname); 2742 glBindTexture(GL_TEXTURE_2D, tname); 2743 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2744 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2745 2746 // the GLConsumer will provide the BufferQueue 2747 sp<GLConsumer> consumer = new GLConsumer(tname, true, GL_TEXTURE_2D); 2748 consumer->getBufferQueue()->setDefaultBufferFormat(HAL_PIXEL_FORMAT_RGBA_8888); 2749 2750 // call the new screenshot taking code, passing a BufferQueue to it 2751 status_t result = captureScreenImplLocked(hw, 2752 consumer->getBufferQueue(), reqWidth, reqHeight, minLayerZ, maxLayerZ); 2753 2754 if (result == NO_ERROR) { 2755 result = consumer->updateTexImage(); 2756 if (result == NO_ERROR) { 2757 // create a FBO 2758 GLuint name; 2759 glGenFramebuffersOES(1, &name); 2760 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2761 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2762 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2763 2764 reqWidth = consumer->getCurrentBuffer()->getWidth(); 2765 reqHeight = consumer->getCurrentBuffer()->getHeight(); 2766 2767 { 2768 // in this block we render the screenshot into the 2769 // CpuConsumer using glReadPixels from our GLConsumer, 2770 // Some older drivers don't support the GL->CPU path so 2771 // have to wrap it with a CPU->CPU path, which is what 2772 // glReadPixels essentially is 2773 2774 sp<Surface> sur = new Surface(producer); 2775 ANativeWindow* window = sur.get(); 2776 ANativeWindowBuffer* buffer; 2777 void* vaddr; 2778 2779 if (native_window_api_connect(window, 2780 NATIVE_WINDOW_API_CPU) == NO_ERROR) { 2781 int err = 0; 2782 err = native_window_set_buffers_dimensions(window, 2783 reqWidth, reqHeight); 2784 err |= native_window_set_buffers_format(window, 2785 HAL_PIXEL_FORMAT_RGBA_8888); 2786 err |= native_window_set_usage(window, 2787 GRALLOC_USAGE_SW_READ_OFTEN | 2788 GRALLOC_USAGE_SW_WRITE_OFTEN); 2789 2790 if (err == NO_ERROR) { 2791 if (native_window_dequeue_buffer_and_wait(window, 2792 &buffer) == NO_ERROR) { 2793 sp<GraphicBuffer> buf = 2794 static_cast<GraphicBuffer*>(buffer); 2795 if (buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, 2796 &vaddr) == NO_ERROR) { 2797 if (buffer->stride != int(reqWidth)) { 2798 // we're unlucky here, glReadPixels is 2799 // not able to deal with a stride not 2800 // equal to the width. 2801 uint32_t* tmp = new uint32_t[reqWidth*reqHeight]; 2802 if (tmp != NULL) { 2803 glReadPixels(0, 0, reqWidth, reqHeight, 2804 GL_RGBA, GL_UNSIGNED_BYTE, tmp); 2805 for (size_t y=0 ; y<reqHeight ; y++) { 2806 memcpy((uint32_t*)vaddr + y*buffer->stride, 2807 tmp + y*reqWidth, reqWidth*4); 2808 } 2809 delete [] tmp; 2810 } 2811 } else { 2812 glReadPixels(0, 0, reqWidth, reqHeight, 2813 GL_RGBA, GL_UNSIGNED_BYTE, vaddr); 2814 } 2815 buf->unlock(); 2816 } 2817 window->queueBuffer(window, buffer, -1); 2818 } 2819 } 2820 native_window_api_disconnect(window, NATIVE_WINDOW_API_CPU); 2821 } 2822 } 2823 2824 // back to main framebuffer 2825 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2826 glDeleteFramebuffersOES(1, &name); 2827 } 2828 } 2829 2830 glDeleteTextures(1, &tname); 2831 2832 DisplayDevice::makeCurrent(mEGLDisplay, 2833 getDefaultDisplayDevice(), mEGLContext); 2834 2835 return result; 2836} 2837 2838// --------------------------------------------------------------------------- 2839 2840SurfaceFlinger::LayerVector::LayerVector() { 2841} 2842 2843SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2844 : SortedVector<sp<Layer> >(rhs) { 2845} 2846 2847int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2848 const void* rhs) const 2849{ 2850 // sort layers per layer-stack, then by z-order and finally by sequence 2851 const sp<Layer>& l(*reinterpret_cast<const sp<Layer>*>(lhs)); 2852 const sp<Layer>& r(*reinterpret_cast<const sp<Layer>*>(rhs)); 2853 2854 uint32_t ls = l->currentState().layerStack; 2855 uint32_t rs = r->currentState().layerStack; 2856 if (ls != rs) 2857 return ls - rs; 2858 2859 uint32_t lz = l->currentState().z; 2860 uint32_t rz = r->currentState().z; 2861 if (lz != rz) 2862 return lz - rz; 2863 2864 return l->sequence - r->sequence; 2865} 2866 2867// --------------------------------------------------------------------------- 2868 2869SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2870 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2871} 2872 2873SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2874 : type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) { 2875 viewport.makeInvalid(); 2876 frame.makeInvalid(); 2877} 2878 2879// --------------------------------------------------------------------------- 2880 2881}; // namespace android 2882