SurfaceFlinger.cpp revision 3e25fd8609b100a75721be82d1d499f0ae9083cb
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <stdint.h> 20#include <sys/types.h> 21#include <errno.h> 22#include <math.h> 23#include <dlfcn.h> 24 25#include <EGL/egl.h> 26#include <GLES/gl.h> 27 28#include <cutils/log.h> 29#include <cutils/properties.h> 30 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryHeapBase.h> 34#include <binder/PermissionCache.h> 35 36#include <ui/DisplayInfo.h> 37 38#include <gui/BitTube.h> 39#include <gui/BufferQueue.h> 40#include <gui/GuiConfig.h> 41#include <gui/IDisplayEventConnection.h> 42#include <gui/Surface.h> 43#include <gui/GraphicBufferAlloc.h> 44 45#include <ui/GraphicBufferAllocator.h> 46#include <ui/PixelFormat.h> 47#include <ui/UiConfig.h> 48 49#include <utils/misc.h> 50#include <utils/String8.h> 51#include <utils/String16.h> 52#include <utils/StopWatch.h> 53#include <utils/Trace.h> 54 55#include <private/android_filesystem_config.h> 56#include <private/gui/SyncFeatures.h> 57 58#include "Client.h" 59#include "clz.h" 60#include "Colorizer.h" 61#include "DdmConnection.h" 62#include "DisplayDevice.h" 63#include "EventThread.h" 64#include "GLExtensions.h" 65#include "Layer.h" 66#include "LayerDim.h" 67#include "SurfaceFlinger.h" 68 69#include "DisplayHardware/FramebufferSurface.h" 70#include "DisplayHardware/HWComposer.h" 71#include "DisplayHardware/VirtualDisplaySurface.h" 72 73#define DISPLAY_COUNT 1 74 75EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name); 76 77namespace android { 78// --------------------------------------------------------------------------- 79 80const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 81const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 82const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 83const String16 sDump("android.permission.DUMP"); 84 85// --------------------------------------------------------------------------- 86 87SurfaceFlinger::SurfaceFlinger() 88 : BnSurfaceComposer(), Thread(false), 89 mTransactionFlags(0), 90 mTransactionPending(false), 91 mAnimTransactionPending(false), 92 mLayersRemoved(false), 93 mRepaintEverything(0), 94 mBootTime(systemTime()), 95 mVisibleRegionsDirty(false), 96 mHwWorkListDirty(false), 97 mAnimCompositionPending(false), 98 mDebugRegion(0), 99 mDebugDDMS(0), 100 mDebugDisableHWC(0), 101 mDebugDisableTransformHint(0), 102 mDebugInSwapBuffers(0), 103 mLastSwapBufferTime(0), 104 mDebugInTransaction(0), 105 mLastTransactionTime(0), 106 mBootFinished(false) 107{ 108 ALOGI("SurfaceFlinger is starting"); 109 110 // debugging stuff... 111 char value[PROPERTY_VALUE_MAX]; 112 113 property_get("ro.bq.gpu_to_cpu_unsupported", value, "0"); 114 mGpuToCpuSupported = !atoi(value); 115 116 property_get("debug.sf.showupdates", value, "0"); 117 mDebugRegion = atoi(value); 118 119 property_get("debug.sf.ddms", value, "0"); 120 mDebugDDMS = atoi(value); 121 if (mDebugDDMS) { 122 if (!startDdmConnection()) { 123 // start failed, and DDMS debugging not enabled 124 mDebugDDMS = 0; 125 } 126 } 127 ALOGI_IF(mDebugRegion, "showupdates enabled"); 128 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 129} 130 131void SurfaceFlinger::onFirstRef() 132{ 133 mEventQueue.init(this); 134 135 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 136 137 // Wait for the main thread to be done with its initialization 138 mReadyToRunBarrier.wait(); 139} 140 141 142SurfaceFlinger::~SurfaceFlinger() 143{ 144 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 145 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 146 eglTerminate(display); 147} 148 149void SurfaceFlinger::binderDied(const wp<IBinder>& who) 150{ 151 // the window manager died on us. prepare its eulogy. 152 153 // restore initial conditions (default device unblank, etc) 154 initializeDisplays(); 155 156 // restart the boot-animation 157 startBootAnim(); 158} 159 160sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 161{ 162 sp<ISurfaceComposerClient> bclient; 163 sp<Client> client(new Client(this)); 164 status_t err = client->initCheck(); 165 if (err == NO_ERROR) { 166 bclient = client; 167 } 168 return bclient; 169} 170 171sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 172 bool secure) 173{ 174 class DisplayToken : public BBinder { 175 sp<SurfaceFlinger> flinger; 176 virtual ~DisplayToken() { 177 // no more references, this display must be terminated 178 Mutex::Autolock _l(flinger->mStateLock); 179 flinger->mCurrentState.displays.removeItem(this); 180 flinger->setTransactionFlags(eDisplayTransactionNeeded); 181 } 182 public: 183 DisplayToken(const sp<SurfaceFlinger>& flinger) 184 : flinger(flinger) { 185 } 186 }; 187 188 sp<BBinder> token = new DisplayToken(this); 189 190 Mutex::Autolock _l(mStateLock); 191 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 192 info.displayName = displayName; 193 info.isSecure = secure; 194 mCurrentState.displays.add(token, info); 195 196 return token; 197} 198 199void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { 200 ALOGW_IF(mBuiltinDisplays[type], 201 "Overwriting display token for display type %d", type); 202 mBuiltinDisplays[type] = new BBinder(); 203 DisplayDeviceState info(type); 204 // All non-virtual displays are currently considered secure. 205 info.isSecure = true; 206 mCurrentState.displays.add(mBuiltinDisplays[type], info); 207} 208 209sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 210 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 211 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 212 return NULL; 213 } 214 return mBuiltinDisplays[id]; 215} 216 217sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 218{ 219 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 220 return gba; 221} 222 223void SurfaceFlinger::bootFinished() 224{ 225 const nsecs_t now = systemTime(); 226 const nsecs_t duration = now - mBootTime; 227 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 228 mBootFinished = true; 229 230 // wait patiently for the window manager death 231 const String16 name("window"); 232 sp<IBinder> window(defaultServiceManager()->getService(name)); 233 if (window != 0) { 234 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 235 } 236 237 // stop boot animation 238 // formerly we would just kill the process, but we now ask it to exit so it 239 // can choose where to stop the animation. 240 property_set("service.bootanim.exit", "1"); 241} 242 243void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 244 class MessageDestroyGLTexture : public MessageBase { 245 GLuint texture; 246 public: 247 MessageDestroyGLTexture(GLuint texture) 248 : texture(texture) { 249 } 250 virtual bool handler() { 251 glDeleteTextures(1, &texture); 252 return true; 253 } 254 }; 255 postMessageAsync(new MessageDestroyGLTexture(texture)); 256} 257 258status_t SurfaceFlinger::selectConfigForAttribute( 259 EGLDisplay dpy, 260 EGLint const* attrs, 261 EGLint attribute, EGLint wanted, 262 EGLConfig* outConfig) 263{ 264 EGLConfig config = NULL; 265 EGLint numConfigs = -1, n=0; 266 eglGetConfigs(dpy, NULL, 0, &numConfigs); 267 EGLConfig* const configs = new EGLConfig[numConfigs]; 268 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 269 270 if (n) { 271 if (attribute != EGL_NONE) { 272 for (int i=0 ; i<n ; i++) { 273 EGLint value = 0; 274 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 275 if (wanted == value) { 276 *outConfig = configs[i]; 277 delete [] configs; 278 return NO_ERROR; 279 } 280 } 281 } else { 282 // just pick the first one 283 *outConfig = configs[0]; 284 delete [] configs; 285 return NO_ERROR; 286 } 287 } 288 delete [] configs; 289 return NAME_NOT_FOUND; 290} 291 292class EGLAttributeVector { 293 struct Attribute; 294 class Adder; 295 friend class Adder; 296 KeyedVector<Attribute, EGLint> mList; 297 struct Attribute { 298 Attribute() {}; 299 Attribute(EGLint v) : v(v) { } 300 EGLint v; 301 bool operator < (const Attribute& other) const { 302 // this places EGL_NONE at the end 303 EGLint lhs(v); 304 EGLint rhs(other.v); 305 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 306 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 307 return lhs < rhs; 308 } 309 }; 310 class Adder { 311 friend class EGLAttributeVector; 312 EGLAttributeVector& v; 313 EGLint attribute; 314 Adder(EGLAttributeVector& v, EGLint attribute) 315 : v(v), attribute(attribute) { 316 } 317 public: 318 void operator = (EGLint value) { 319 if (attribute != EGL_NONE) { 320 v.mList.add(attribute, value); 321 } 322 } 323 operator EGLint () const { return v.mList[attribute]; } 324 }; 325public: 326 EGLAttributeVector() { 327 mList.add(EGL_NONE, EGL_NONE); 328 } 329 void remove(EGLint attribute) { 330 if (attribute != EGL_NONE) { 331 mList.removeItem(attribute); 332 } 333 } 334 Adder operator [] (EGLint attribute) { 335 return Adder(*this, attribute); 336 } 337 EGLint operator [] (EGLint attribute) const { 338 return mList[attribute]; 339 } 340 // cast-operator to (EGLint const*) 341 operator EGLint const* () const { return &mList.keyAt(0).v; } 342}; 343 344EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 345 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 346 // it is to be used with WIFI displays 347 EGLConfig config; 348 EGLint dummy; 349 status_t err; 350 351 EGLAttributeVector attribs; 352 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 353 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 354 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 355 attribs[EGL_RED_SIZE] = 8; 356 attribs[EGL_GREEN_SIZE] = 8; 357 attribs[EGL_BLUE_SIZE] = 8; 358 359 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 360 if (!err) 361 goto success; 362 363 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 364 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 365 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 366 err = selectConfigForAttribute(display, attribs, 367 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 368 if (!err) 369 goto success; 370 371 // maybe we failed because of EGL_RECORDABLE_ANDROID 372 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 373 attribs.remove(EGL_RECORDABLE_ANDROID); 374 err = selectConfigForAttribute(display, attribs, 375 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 376 if (!err) 377 goto success; 378 379 // allow less than 24-bit color; the non-gpu-accelerated emulator only 380 // supports 16-bit color 381 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 382 attribs.remove(EGL_RED_SIZE); 383 attribs.remove(EGL_GREEN_SIZE); 384 attribs.remove(EGL_BLUE_SIZE); 385 err = selectConfigForAttribute(display, attribs, 386 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 387 if (!err) 388 goto success; 389 390 // this EGL is too lame for Android 391 ALOGE("no suitable EGLConfig found, giving up"); 392 393 return 0; 394 395success: 396 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 397 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 398 return config; 399} 400 401EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 402 // Also create our EGLContext 403 EGLint contextAttributes[] = { 404#ifdef EGL_IMG_context_priority 405#ifdef HAS_CONTEXT_PRIORITY 406#warning "using EGL_IMG_context_priority" 407 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 408#endif 409#endif 410 EGL_NONE, EGL_NONE 411 }; 412 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 413 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 414 return ctxt; 415} 416 417void SurfaceFlinger::initializeGL(EGLDisplay display) { 418 GLExtensions& extensions(GLExtensions::getInstance()); 419 extensions.initWithGLStrings( 420 glGetString(GL_VENDOR), 421 glGetString(GL_RENDERER), 422 glGetString(GL_VERSION), 423 glGetString(GL_EXTENSIONS), 424 eglQueryString(display, EGL_VENDOR), 425 eglQueryString(display, EGL_VERSION), 426 eglQueryString(display, EGL_EXTENSIONS)); 427 428 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 429 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 430 431 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 432 glPixelStorei(GL_PACK_ALIGNMENT, 4); 433 glEnableClientState(GL_VERTEX_ARRAY); 434 glShadeModel(GL_FLAT); 435 glDisable(GL_DITHER); 436 glDisable(GL_CULL_FACE); 437 438 struct pack565 { 439 inline uint16_t operator() (int r, int g, int b) const { 440 return (r<<11)|(g<<5)|b; 441 } 442 } pack565; 443 444 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 445 glGenTextures(1, &mProtectedTexName); 446 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 447 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 448 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 449 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 450 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 451 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 452 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 453 454 // print some debugging info 455 EGLint r,g,b,a; 456 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 457 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 458 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 459 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 460 ALOGI("EGL informations:"); 461 ALOGI("vendor : %s", extensions.getEglVendor()); 462 ALOGI("version : %s", extensions.getEglVersion()); 463 ALOGI("extensions: %s", extensions.getEglExtension()); 464 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 465 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 466 ALOGI("OpenGL ES informations:"); 467 ALOGI("vendor : %s", extensions.getVendor()); 468 ALOGI("renderer : %s", extensions.getRenderer()); 469 ALOGI("version : %s", extensions.getVersion()); 470 ALOGI("extensions: %s", extensions.getExtension()); 471 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 472 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 473} 474 475status_t SurfaceFlinger::readyToRun() 476{ 477 ALOGI( "SurfaceFlinger's main thread ready to run. " 478 "Initializing graphics H/W..."); 479 480 Mutex::Autolock _l(mStateLock); 481 482 // initialize EGL for the default display 483 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 484 eglInitialize(mEGLDisplay, NULL, NULL); 485 486 // Initialize the H/W composer object. There may or may not be an 487 // actual hardware composer underneath. 488 mHwc = new HWComposer(this, 489 *static_cast<HWComposer::EventHandler *>(this)); 490 491 // initialize the config and context 492 EGLint format = mHwc->getVisualID(); 493 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 494 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 495 496 // figure out which format we got 497 eglGetConfigAttrib(mEGLDisplay, mEGLConfig, 498 EGL_NATIVE_VISUAL_ID, &mEGLNativeVisualId); 499 500 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 501 "couldn't create EGLContext"); 502 503 // initialize our non-virtual displays 504 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 505 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 506 // set-up the displays that are already connected 507 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 508 // All non-virtual displays are currently considered secure. 509 bool isSecure = true; 510 createBuiltinDisplayLocked(type); 511 wp<IBinder> token = mBuiltinDisplays[i]; 512 513 sp<DisplayDevice> hw = new DisplayDevice(this, 514 type, allocateHwcDisplayId(type), isSecure, token, 515 new FramebufferSurface(*mHwc, i), 516 mEGLConfig); 517 if (i > DisplayDevice::DISPLAY_PRIMARY) { 518 // FIXME: currently we don't get blank/unblank requests 519 // for displays other than the main display, so we always 520 // assume a connected display is unblanked. 521 ALOGD("marking display %d as acquired/unblanked", i); 522 hw->acquireScreen(); 523 } 524 mDisplays.add(token, hw); 525 } 526 } 527 528 // we need a GL context current in a few places, when initializing 529 // OpenGL ES (see below), or creating a layer, 530 // or when a texture is (asynchronously) destroyed, and for that 531 // we need a valid surface, so it's convenient to use the main display 532 // for that. 533 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 534 535 // initialize OpenGL ES 536 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 537 initializeGL(mEGLDisplay); 538 539 // start the EventThread 540 mEventThread = new EventThread(this); 541 mEventQueue.setEventThread(mEventThread); 542 543 // initialize our drawing state 544 mDrawingState = mCurrentState; 545 546 547 // We're now ready to accept clients... 548 mReadyToRunBarrier.open(); 549 550 // set initial conditions (e.g. unblank default device) 551 initializeDisplays(); 552 553 // start boot animation 554 startBootAnim(); 555 556 return NO_ERROR; 557} 558 559int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 560 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 561 type : mHwc->allocateDisplayId(); 562} 563 564void SurfaceFlinger::startBootAnim() { 565 // start boot animation 566 property_set("service.bootanim.exit", "0"); 567 property_set("ctl.start", "bootanim"); 568} 569 570uint32_t SurfaceFlinger::getMaxTextureSize() const { 571 return mMaxTextureSize; 572} 573 574uint32_t SurfaceFlinger::getMaxViewportDims() const { 575 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 576 mMaxViewportDims[0] : mMaxViewportDims[1]; 577} 578 579// ---------------------------------------------------------------------------- 580 581bool SurfaceFlinger::authenticateSurfaceTexture( 582 const sp<IGraphicBufferProducer>& bufferProducer) const { 583 Mutex::Autolock _l(mStateLock); 584 sp<IBinder> surfaceTextureBinder(bufferProducer->asBinder()); 585 return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0; 586} 587 588status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 589 int32_t type = NAME_NOT_FOUND; 590 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 591 if (display == mBuiltinDisplays[i]) { 592 type = i; 593 break; 594 } 595 } 596 597 if (type < 0) { 598 return type; 599 } 600 601 const HWComposer& hwc(getHwComposer()); 602 float xdpi = hwc.getDpiX(type); 603 float ydpi = hwc.getDpiY(type); 604 605 // TODO: Not sure if display density should handled by SF any longer 606 class Density { 607 static int getDensityFromProperty(char const* propName) { 608 char property[PROPERTY_VALUE_MAX]; 609 int density = 0; 610 if (property_get(propName, property, NULL) > 0) { 611 density = atoi(property); 612 } 613 return density; 614 } 615 public: 616 static int getEmuDensity() { 617 return getDensityFromProperty("qemu.sf.lcd_density"); } 618 static int getBuildDensity() { 619 return getDensityFromProperty("ro.sf.lcd_density"); } 620 }; 621 622 if (type == DisplayDevice::DISPLAY_PRIMARY) { 623 // The density of the device is provided by a build property 624 float density = Density::getBuildDensity() / 160.0f; 625 if (density == 0) { 626 // the build doesn't provide a density -- this is wrong! 627 // use xdpi instead 628 ALOGE("ro.sf.lcd_density must be defined as a build property"); 629 density = xdpi / 160.0f; 630 } 631 if (Density::getEmuDensity()) { 632 // if "qemu.sf.lcd_density" is specified, it overrides everything 633 xdpi = ydpi = density = Density::getEmuDensity(); 634 density /= 160.0f; 635 } 636 info->density = density; 637 638 // TODO: this needs to go away (currently needed only by webkit) 639 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 640 info->orientation = hw->getOrientation(); 641 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 642 } else { 643 // TODO: where should this value come from? 644 static const int TV_DENSITY = 213; 645 info->density = TV_DENSITY / 160.0f; 646 info->orientation = 0; 647 } 648 649 info->w = hwc.getWidth(type); 650 info->h = hwc.getHeight(type); 651 info->xdpi = xdpi; 652 info->ydpi = ydpi; 653 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 654 655 // All non-virtual displays are currently considered secure. 656 info->secure = true; 657 658 return NO_ERROR; 659} 660 661// ---------------------------------------------------------------------------- 662 663sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 664 return mEventThread->createEventConnection(); 665} 666 667// ---------------------------------------------------------------------------- 668 669void SurfaceFlinger::waitForEvent() { 670 mEventQueue.waitMessage(); 671} 672 673void SurfaceFlinger::signalTransaction() { 674 mEventQueue.invalidate(); 675} 676 677void SurfaceFlinger::signalLayerUpdate() { 678 mEventQueue.invalidate(); 679} 680 681void SurfaceFlinger::signalRefresh() { 682 mEventQueue.refresh(); 683} 684 685status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 686 nsecs_t reltime, uint32_t flags) { 687 return mEventQueue.postMessage(msg, reltime); 688} 689 690status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 691 nsecs_t reltime, uint32_t flags) { 692 status_t res = mEventQueue.postMessage(msg, reltime); 693 if (res == NO_ERROR) { 694 msg->wait(); 695 } 696 return res; 697} 698 699bool SurfaceFlinger::threadLoop() { 700 waitForEvent(); 701 return true; 702} 703 704void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 705 if (mEventThread == NULL) { 706 // This is a temporary workaround for b/7145521. A non-null pointer 707 // does not mean EventThread has finished initializing, so this 708 // is not a correct fix. 709 ALOGW("WARNING: EventThread not started, ignoring vsync"); 710 return; 711 } 712 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 713 // we should only receive DisplayDevice::DisplayType from the vsync callback 714 mEventThread->onVSyncReceived(type, timestamp); 715 } 716} 717 718void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 719 if (mEventThread == NULL) { 720 // This is a temporary workaround for b/7145521. A non-null pointer 721 // does not mean EventThread has finished initializing, so this 722 // is not a correct fix. 723 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 724 return; 725 } 726 727 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 728 Mutex::Autolock _l(mStateLock); 729 if (connected) { 730 createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); 731 } else { 732 mCurrentState.displays.removeItem(mBuiltinDisplays[type]); 733 mBuiltinDisplays[type].clear(); 734 } 735 setTransactionFlags(eDisplayTransactionNeeded); 736 737 // Defer EventThread notification until SF has updated mDisplays. 738 } 739} 740 741void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 742 getHwComposer().eventControl(disp, event, enabled); 743} 744 745void SurfaceFlinger::onMessageReceived(int32_t what) { 746 ATRACE_CALL(); 747 switch (what) { 748 case MessageQueue::TRANSACTION: 749 handleMessageTransaction(); 750 break; 751 case MessageQueue::INVALIDATE: 752 handleMessageTransaction(); 753 handleMessageInvalidate(); 754 signalRefresh(); 755 break; 756 case MessageQueue::REFRESH: 757 handleMessageRefresh(); 758 break; 759 } 760} 761 762void SurfaceFlinger::handleMessageTransaction() { 763 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 764 if (transactionFlags) { 765 handleTransaction(transactionFlags); 766 } 767} 768 769void SurfaceFlinger::handleMessageInvalidate() { 770 ATRACE_CALL(); 771 handlePageFlip(); 772} 773 774void SurfaceFlinger::handleMessageRefresh() { 775 ATRACE_CALL(); 776 preComposition(); 777 rebuildLayerStacks(); 778 setUpHWComposer(); 779 doDebugFlashRegions(); 780 doComposition(); 781 postComposition(); 782} 783 784void SurfaceFlinger::doDebugFlashRegions() 785{ 786 // is debugging enabled 787 if (CC_LIKELY(!mDebugRegion)) 788 return; 789 790 const bool repaintEverything = mRepaintEverything; 791 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 792 const sp<DisplayDevice>& hw(mDisplays[dpy]); 793 if (hw->canDraw()) { 794 // transform the dirty region into this screen's coordinate space 795 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 796 if (!dirtyRegion.isEmpty()) { 797 // redraw the whole screen 798 doComposeSurfaces(hw, Region(hw->bounds())); 799 800 // and draw the dirty region 801 glDisable(GL_TEXTURE_EXTERNAL_OES); 802 glDisable(GL_TEXTURE_2D); 803 glDisable(GL_BLEND); 804 glColor4f(1, 0, 1, 1); 805 const int32_t height = hw->getHeight(); 806 Region::const_iterator it = dirtyRegion.begin(); 807 Region::const_iterator const end = dirtyRegion.end(); 808 while (it != end) { 809 const Rect& r = *it++; 810 GLfloat vertices[][2] = { 811 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 812 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 813 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 814 { (GLfloat) r.right, (GLfloat) (height - r.top) } 815 }; 816 glVertexPointer(2, GL_FLOAT, 0, vertices); 817 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 818 } 819 hw->compositionComplete(); 820 hw->swapBuffers(getHwComposer()); 821 } 822 } 823 } 824 825 postFramebuffer(); 826 827 if (mDebugRegion > 1) { 828 usleep(mDebugRegion * 1000); 829 } 830 831 HWComposer& hwc(getHwComposer()); 832 if (hwc.initCheck() == NO_ERROR) { 833 status_t err = hwc.prepare(); 834 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 835 } 836} 837 838void SurfaceFlinger::preComposition() 839{ 840 bool needExtraInvalidate = false; 841 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 842 const size_t count = currentLayers.size(); 843 for (size_t i=0 ; i<count ; i++) { 844 if (currentLayers[i]->onPreComposition()) { 845 needExtraInvalidate = true; 846 } 847 } 848 if (needExtraInvalidate) { 849 signalLayerUpdate(); 850 } 851} 852 853void SurfaceFlinger::postComposition() 854{ 855 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 856 const size_t count = currentLayers.size(); 857 for (size_t i=0 ; i<count ; i++) { 858 currentLayers[i]->onPostComposition(); 859 } 860 861 if (mAnimCompositionPending) { 862 mAnimCompositionPending = false; 863 864 const HWComposer& hwc = getHwComposer(); 865 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 866 if (presentFence->isValid()) { 867 mAnimFrameTracker.setActualPresentFence(presentFence); 868 } else { 869 // The HWC doesn't support present fences, so use the refresh 870 // timestamp instead. 871 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 872 mAnimFrameTracker.setActualPresentTime(presentTime); 873 } 874 mAnimFrameTracker.advanceFrame(); 875 } 876} 877 878void SurfaceFlinger::rebuildLayerStacks() { 879 // rebuild the visible layer list per screen 880 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 881 ATRACE_CALL(); 882 mVisibleRegionsDirty = false; 883 invalidateHwcGeometry(); 884 885 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 886 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 887 Region opaqueRegion; 888 Region dirtyRegion; 889 Vector< sp<Layer> > layersSortedByZ; 890 const sp<DisplayDevice>& hw(mDisplays[dpy]); 891 const Transform& tr(hw->getTransform()); 892 const Rect bounds(hw->getBounds()); 893 if (hw->canDraw()) { 894 SurfaceFlinger::computeVisibleRegions(currentLayers, 895 hw->getLayerStack(), dirtyRegion, opaqueRegion); 896 897 const size_t count = currentLayers.size(); 898 for (size_t i=0 ; i<count ; i++) { 899 const sp<Layer>& layer(currentLayers[i]); 900 const Layer::State& s(layer->drawingState()); 901 if (s.layerStack == hw->getLayerStack()) { 902 Region drawRegion(tr.transform( 903 layer->visibleNonTransparentRegion)); 904 drawRegion.andSelf(bounds); 905 if (!drawRegion.isEmpty()) { 906 layersSortedByZ.add(layer); 907 } 908 } 909 } 910 } 911 hw->setVisibleLayersSortedByZ(layersSortedByZ); 912 hw->undefinedRegion.set(bounds); 913 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 914 hw->dirtyRegion.orSelf(dirtyRegion); 915 } 916 } 917} 918 919void SurfaceFlinger::setUpHWComposer() { 920 HWComposer& hwc(getHwComposer()); 921 if (hwc.initCheck() == NO_ERROR) { 922 // build the h/w work list 923 if (CC_UNLIKELY(mHwWorkListDirty)) { 924 mHwWorkListDirty = false; 925 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 926 sp<const DisplayDevice> hw(mDisplays[dpy]); 927 const int32_t id = hw->getHwcDisplayId(); 928 if (id >= 0) { 929 const Vector< sp<Layer> >& currentLayers( 930 hw->getVisibleLayersSortedByZ()); 931 const size_t count = currentLayers.size(); 932 if (hwc.createWorkList(id, count) == NO_ERROR) { 933 HWComposer::LayerListIterator cur = hwc.begin(id); 934 const HWComposer::LayerListIterator end = hwc.end(id); 935 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 936 const sp<Layer>& layer(currentLayers[i]); 937 layer->setGeometry(hw, *cur); 938 if (mDebugDisableHWC || mDebugRegion) { 939 cur->setSkip(true); 940 } 941 } 942 } 943 } 944 } 945 } 946 947 // set the per-frame data 948 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 949 sp<const DisplayDevice> hw(mDisplays[dpy]); 950 const int32_t id = hw->getHwcDisplayId(); 951 if (id >= 0) { 952 const Vector< sp<Layer> >& currentLayers( 953 hw->getVisibleLayersSortedByZ()); 954 const size_t count = currentLayers.size(); 955 HWComposer::LayerListIterator cur = hwc.begin(id); 956 const HWComposer::LayerListIterator end = hwc.end(id); 957 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 958 /* 959 * update the per-frame h/w composer data for each layer 960 * and build the transparent region of the FB 961 */ 962 const sp<Layer>& layer(currentLayers[i]); 963 layer->setPerFrameData(hw, *cur); 964 } 965 } 966 } 967 968 status_t err = hwc.prepare(); 969 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 970 } 971} 972 973void SurfaceFlinger::doComposition() { 974 ATRACE_CALL(); 975 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 976 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 977 const sp<DisplayDevice>& hw(mDisplays[dpy]); 978 if (hw->canDraw()) { 979 // transform the dirty region into this screen's coordinate space 980 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 981 982 // repaint the framebuffer (if needed) 983 doDisplayComposition(hw, dirtyRegion); 984 985 hw->dirtyRegion.clear(); 986 hw->flip(hw->swapRegion); 987 hw->swapRegion.clear(); 988 } 989 // inform the h/w that we're done compositing 990 hw->compositionComplete(); 991 } 992 postFramebuffer(); 993} 994 995void SurfaceFlinger::postFramebuffer() 996{ 997 ATRACE_CALL(); 998 999 const nsecs_t now = systemTime(); 1000 mDebugInSwapBuffers = now; 1001 1002 HWComposer& hwc(getHwComposer()); 1003 if (hwc.initCheck() == NO_ERROR) { 1004 if (!hwc.supportsFramebufferTarget()) { 1005 // EGL spec says: 1006 // "surface must be bound to the calling thread's current context, 1007 // for the current rendering API." 1008 DisplayDevice::makeCurrent(mEGLDisplay, 1009 getDefaultDisplayDevice(), mEGLContext); 1010 } 1011 hwc.commit(); 1012 } 1013 1014 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1015 sp<const DisplayDevice> hw(mDisplays[dpy]); 1016 const Vector< sp<Layer> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1017 hw->onSwapBuffersCompleted(hwc); 1018 const size_t count = currentLayers.size(); 1019 int32_t id = hw->getHwcDisplayId(); 1020 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1021 HWComposer::LayerListIterator cur = hwc.begin(id); 1022 const HWComposer::LayerListIterator end = hwc.end(id); 1023 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1024 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1025 } 1026 } else { 1027 for (size_t i = 0; i < count; i++) { 1028 currentLayers[i]->onLayerDisplayed(hw, NULL); 1029 } 1030 } 1031 } 1032 1033 mLastSwapBufferTime = systemTime() - now; 1034 mDebugInSwapBuffers = 0; 1035} 1036 1037void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1038{ 1039 ATRACE_CALL(); 1040 1041 Mutex::Autolock _l(mStateLock); 1042 const nsecs_t now = systemTime(); 1043 mDebugInTransaction = now; 1044 1045 // Here we're guaranteed that some transaction flags are set 1046 // so we can call handleTransactionLocked() unconditionally. 1047 // We call getTransactionFlags(), which will also clear the flags, 1048 // with mStateLock held to guarantee that mCurrentState won't change 1049 // until the transaction is committed. 1050 1051 transactionFlags = getTransactionFlags(eTransactionMask); 1052 handleTransactionLocked(transactionFlags); 1053 1054 mLastTransactionTime = systemTime() - now; 1055 mDebugInTransaction = 0; 1056 invalidateHwcGeometry(); 1057 // here the transaction has been committed 1058} 1059 1060void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1061{ 1062 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1063 const size_t count = currentLayers.size(); 1064 1065 /* 1066 * Traversal of the children 1067 * (perform the transaction for each of them if needed) 1068 */ 1069 1070 if (transactionFlags & eTraversalNeeded) { 1071 for (size_t i=0 ; i<count ; i++) { 1072 const sp<Layer>& layer(currentLayers[i]); 1073 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1074 if (!trFlags) continue; 1075 1076 const uint32_t flags = layer->doTransaction(0); 1077 if (flags & Layer::eVisibleRegion) 1078 mVisibleRegionsDirty = true; 1079 } 1080 } 1081 1082 /* 1083 * Perform display own transactions if needed 1084 */ 1085 1086 if (transactionFlags & eDisplayTransactionNeeded) { 1087 // here we take advantage of Vector's copy-on-write semantics to 1088 // improve performance by skipping the transaction entirely when 1089 // know that the lists are identical 1090 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1091 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1092 if (!curr.isIdenticalTo(draw)) { 1093 mVisibleRegionsDirty = true; 1094 const size_t cc = curr.size(); 1095 size_t dc = draw.size(); 1096 1097 // find the displays that were removed 1098 // (ie: in drawing state but not in current state) 1099 // also handle displays that changed 1100 // (ie: displays that are in both lists) 1101 for (size_t i=0 ; i<dc ; i++) { 1102 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1103 if (j < 0) { 1104 // in drawing state but not in current state 1105 if (!draw[i].isMainDisplay()) { 1106 // Call makeCurrent() on the primary display so we can 1107 // be sure that nothing associated with this display 1108 // is current. 1109 const sp<const DisplayDevice> defaultDisplay(getDefaultDisplayDevice()); 1110 DisplayDevice::makeCurrent(mEGLDisplay, defaultDisplay, mEGLContext); 1111 sp<DisplayDevice> hw(getDisplayDevice(draw.keyAt(i))); 1112 if (hw != NULL) 1113 hw->disconnect(getHwComposer()); 1114 if (draw[i].type < DisplayDevice::NUM_DISPLAY_TYPES) 1115 mEventThread->onHotplugReceived(draw[i].type, false); 1116 mDisplays.removeItem(draw.keyAt(i)); 1117 } else { 1118 ALOGW("trying to remove the main display"); 1119 } 1120 } else { 1121 // this display is in both lists. see if something changed. 1122 const DisplayDeviceState& state(curr[j]); 1123 const wp<IBinder>& display(curr.keyAt(j)); 1124 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1125 // changing the surface is like destroying and 1126 // recreating the DisplayDevice, so we just remove it 1127 // from the drawing state, so that it get re-added 1128 // below. 1129 sp<DisplayDevice> hw(getDisplayDevice(display)); 1130 if (hw != NULL) 1131 hw->disconnect(getHwComposer()); 1132 mDisplays.removeItem(display); 1133 mDrawingState.displays.removeItemsAt(i); 1134 dc--; i--; 1135 // at this point we must loop to the next item 1136 continue; 1137 } 1138 1139 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1140 if (disp != NULL) { 1141 if (state.layerStack != draw[i].layerStack) { 1142 disp->setLayerStack(state.layerStack); 1143 } 1144 if ((state.orientation != draw[i].orientation) 1145 || (state.viewport != draw[i].viewport) 1146 || (state.frame != draw[i].frame)) 1147 { 1148 disp->setProjection(state.orientation, 1149 state.viewport, state.frame); 1150 } 1151 } 1152 } 1153 } 1154 1155 // find displays that were added 1156 // (ie: in current state but not in drawing state) 1157 for (size_t i=0 ; i<cc ; i++) { 1158 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1159 const DisplayDeviceState& state(curr[i]); 1160 1161 sp<DisplaySurface> dispSurface; 1162 int32_t hwcDisplayId = -1; 1163 if (state.isVirtualDisplay()) { 1164 // Virtual displays without a surface are dormant: 1165 // they have external state (layer stack, projection, 1166 // etc.) but no internal state (i.e. a DisplayDevice). 1167 if (state.surface != NULL) { 1168 hwcDisplayId = allocateHwcDisplayId(state.type); 1169 dispSurface = new VirtualDisplaySurface( 1170 *mHwc, hwcDisplayId, state.surface, 1171 state.displayName); 1172 } 1173 } else { 1174 ALOGE_IF(state.surface!=NULL, 1175 "adding a supported display, but rendering " 1176 "surface is provided (%p), ignoring it", 1177 state.surface.get()); 1178 hwcDisplayId = allocateHwcDisplayId(state.type); 1179 // for supported (by hwc) displays we provide our 1180 // own rendering surface 1181 dispSurface = new FramebufferSurface(*mHwc, state.type); 1182 } 1183 1184 const wp<IBinder>& display(curr.keyAt(i)); 1185 if (dispSurface != NULL) { 1186 sp<DisplayDevice> hw = new DisplayDevice(this, 1187 state.type, hwcDisplayId, state.isSecure, 1188 display, dispSurface, mEGLConfig); 1189 hw->setLayerStack(state.layerStack); 1190 hw->setProjection(state.orientation, 1191 state.viewport, state.frame); 1192 hw->setDisplayName(state.displayName); 1193 mDisplays.add(display, hw); 1194 if (state.isVirtualDisplay()) { 1195 if (hwcDisplayId >= 0) { 1196 mHwc->setVirtualDisplayProperties(hwcDisplayId, 1197 hw->getWidth(), hw->getHeight(), 1198 hw->getFormat()); 1199 } 1200 } else { 1201 mEventThread->onHotplugReceived(state.type, true); 1202 } 1203 } 1204 } 1205 } 1206 } 1207 } 1208 1209 if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { 1210 // The transform hint might have changed for some layers 1211 // (either because a display has changed, or because a layer 1212 // as changed). 1213 // 1214 // Walk through all the layers in currentLayers, 1215 // and update their transform hint. 1216 // 1217 // If a layer is visible only on a single display, then that 1218 // display is used to calculate the hint, otherwise we use the 1219 // default display. 1220 // 1221 // NOTE: we do this here, rather than in rebuildLayerStacks() so that 1222 // the hint is set before we acquire a buffer from the surface texture. 1223 // 1224 // NOTE: layer transactions have taken place already, so we use their 1225 // drawing state. However, SurfaceFlinger's own transaction has not 1226 // happened yet, so we must use the current state layer list 1227 // (soon to become the drawing state list). 1228 // 1229 sp<const DisplayDevice> disp; 1230 uint32_t currentlayerStack = 0; 1231 for (size_t i=0; i<count; i++) { 1232 // NOTE: we rely on the fact that layers are sorted by 1233 // layerStack first (so we don't have to traverse the list 1234 // of displays for every layer). 1235 const sp<Layer>& layer(currentLayers[i]); 1236 uint32_t layerStack = layer->drawingState().layerStack; 1237 if (i==0 || currentlayerStack != layerStack) { 1238 currentlayerStack = layerStack; 1239 // figure out if this layerstack is mirrored 1240 // (more than one display) if so, pick the default display, 1241 // if not, pick the only display it's on. 1242 disp.clear(); 1243 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1244 sp<const DisplayDevice> hw(mDisplays[dpy]); 1245 if (hw->getLayerStack() == currentlayerStack) { 1246 if (disp == NULL) { 1247 disp = hw; 1248 } else { 1249 disp = NULL; 1250 break; 1251 } 1252 } 1253 } 1254 } 1255 if (disp == NULL) { 1256 // NOTE: TEMPORARY FIX ONLY. Real fix should cause layers to 1257 // redraw after transform hint changes. See bug 8508397. 1258 1259 // could be null when this layer is using a layerStack 1260 // that is not visible on any display. Also can occur at 1261 // screen off/on times. 1262 disp = getDefaultDisplayDevice(); 1263 } 1264 layer->updateTransformHint(disp); 1265 } 1266 } 1267 1268 1269 /* 1270 * Perform our own transaction if needed 1271 */ 1272 1273 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1274 if (currentLayers.size() > previousLayers.size()) { 1275 // layers have been added 1276 mVisibleRegionsDirty = true; 1277 } 1278 1279 // some layers might have been removed, so 1280 // we need to update the regions they're exposing. 1281 if (mLayersRemoved) { 1282 mLayersRemoved = false; 1283 mVisibleRegionsDirty = true; 1284 const size_t count = previousLayers.size(); 1285 for (size_t i=0 ; i<count ; i++) { 1286 const sp<Layer>& layer(previousLayers[i]); 1287 if (currentLayers.indexOf(layer) < 0) { 1288 // this layer is not visible anymore 1289 // TODO: we could traverse the tree from front to back and 1290 // compute the actual visible region 1291 // TODO: we could cache the transformed region 1292 const Layer::State& s(layer->drawingState()); 1293 Region visibleReg = s.transform.transform( 1294 Region(Rect(s.active.w, s.active.h))); 1295 invalidateLayerStack(s.layerStack, visibleReg); 1296 } 1297 } 1298 } 1299 1300 commitTransaction(); 1301} 1302 1303void SurfaceFlinger::commitTransaction() 1304{ 1305 if (!mLayersPendingRemoval.isEmpty()) { 1306 // Notify removed layers now that they can't be drawn from 1307 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1308 mLayersPendingRemoval[i]->onRemoved(); 1309 } 1310 mLayersPendingRemoval.clear(); 1311 } 1312 1313 // If this transaction is part of a window animation then the next frame 1314 // we composite should be considered an animation as well. 1315 mAnimCompositionPending = mAnimTransactionPending; 1316 1317 mDrawingState = mCurrentState; 1318 mTransactionPending = false; 1319 mAnimTransactionPending = false; 1320 mTransactionCV.broadcast(); 1321} 1322 1323void SurfaceFlinger::computeVisibleRegions( 1324 const LayerVector& currentLayers, uint32_t layerStack, 1325 Region& outDirtyRegion, Region& outOpaqueRegion) 1326{ 1327 ATRACE_CALL(); 1328 1329 Region aboveOpaqueLayers; 1330 Region aboveCoveredLayers; 1331 Region dirty; 1332 1333 outDirtyRegion.clear(); 1334 1335 size_t i = currentLayers.size(); 1336 while (i--) { 1337 const sp<Layer>& layer = currentLayers[i]; 1338 1339 // start with the whole surface at its current location 1340 const Layer::State& s(layer->drawingState()); 1341 1342 // only consider the layers on the given layer stack 1343 if (s.layerStack != layerStack) 1344 continue; 1345 1346 /* 1347 * opaqueRegion: area of a surface that is fully opaque. 1348 */ 1349 Region opaqueRegion; 1350 1351 /* 1352 * visibleRegion: area of a surface that is visible on screen 1353 * and not fully transparent. This is essentially the layer's 1354 * footprint minus the opaque regions above it. 1355 * Areas covered by a translucent surface are considered visible. 1356 */ 1357 Region visibleRegion; 1358 1359 /* 1360 * coveredRegion: area of a surface that is covered by all 1361 * visible regions above it (which includes the translucent areas). 1362 */ 1363 Region coveredRegion; 1364 1365 /* 1366 * transparentRegion: area of a surface that is hinted to be completely 1367 * transparent. This is only used to tell when the layer has no visible 1368 * non-transparent regions and can be removed from the layer list. It 1369 * does not affect the visibleRegion of this layer or any layers 1370 * beneath it. The hint may not be correct if apps don't respect the 1371 * SurfaceView restrictions (which, sadly, some don't). 1372 */ 1373 Region transparentRegion; 1374 1375 1376 // handle hidden surfaces by setting the visible region to empty 1377 if (CC_LIKELY(layer->isVisible())) { 1378 const bool translucent = !layer->isOpaque(); 1379 Rect bounds(s.transform.transform(layer->computeBounds())); 1380 visibleRegion.set(bounds); 1381 if (!visibleRegion.isEmpty()) { 1382 // Remove the transparent area from the visible region 1383 if (translucent) { 1384 const Transform tr(s.transform); 1385 if (tr.transformed()) { 1386 if (tr.preserveRects()) { 1387 // transform the transparent region 1388 transparentRegion = tr.transform(s.activeTransparentRegion); 1389 } else { 1390 // transformation too complex, can't do the 1391 // transparent region optimization. 1392 transparentRegion.clear(); 1393 } 1394 } else { 1395 transparentRegion = s.activeTransparentRegion; 1396 } 1397 } 1398 1399 // compute the opaque region 1400 const int32_t layerOrientation = s.transform.getOrientation(); 1401 if (s.alpha==255 && !translucent && 1402 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1403 // the opaque region is the layer's footprint 1404 opaqueRegion = visibleRegion; 1405 } 1406 } 1407 } 1408 1409 // Clip the covered region to the visible region 1410 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1411 1412 // Update aboveCoveredLayers for next (lower) layer 1413 aboveCoveredLayers.orSelf(visibleRegion); 1414 1415 // subtract the opaque region covered by the layers above us 1416 visibleRegion.subtractSelf(aboveOpaqueLayers); 1417 1418 // compute this layer's dirty region 1419 if (layer->contentDirty) { 1420 // we need to invalidate the whole region 1421 dirty = visibleRegion; 1422 // as well, as the old visible region 1423 dirty.orSelf(layer->visibleRegion); 1424 layer->contentDirty = false; 1425 } else { 1426 /* compute the exposed region: 1427 * the exposed region consists of two components: 1428 * 1) what's VISIBLE now and was COVERED before 1429 * 2) what's EXPOSED now less what was EXPOSED before 1430 * 1431 * note that (1) is conservative, we start with the whole 1432 * visible region but only keep what used to be covered by 1433 * something -- which mean it may have been exposed. 1434 * 1435 * (2) handles areas that were not covered by anything but got 1436 * exposed because of a resize. 1437 */ 1438 const Region newExposed = visibleRegion - coveredRegion; 1439 const Region oldVisibleRegion = layer->visibleRegion; 1440 const Region oldCoveredRegion = layer->coveredRegion; 1441 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1442 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1443 } 1444 dirty.subtractSelf(aboveOpaqueLayers); 1445 1446 // accumulate to the screen dirty region 1447 outDirtyRegion.orSelf(dirty); 1448 1449 // Update aboveOpaqueLayers for next (lower) layer 1450 aboveOpaqueLayers.orSelf(opaqueRegion); 1451 1452 // Store the visible region in screen space 1453 layer->setVisibleRegion(visibleRegion); 1454 layer->setCoveredRegion(coveredRegion); 1455 layer->setVisibleNonTransparentRegion( 1456 visibleRegion.subtract(transparentRegion)); 1457 } 1458 1459 outOpaqueRegion = aboveOpaqueLayers; 1460} 1461 1462void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1463 const Region& dirty) { 1464 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1465 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1466 if (hw->getLayerStack() == layerStack) { 1467 hw->dirtyRegion.orSelf(dirty); 1468 } 1469 } 1470} 1471 1472void SurfaceFlinger::handlePageFlip() 1473{ 1474 Region dirtyRegion; 1475 1476 bool visibleRegions = false; 1477 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1478 const size_t count = currentLayers.size(); 1479 for (size_t i=0 ; i<count ; i++) { 1480 const sp<Layer>& layer(currentLayers[i]); 1481 const Region dirty(layer->latchBuffer(visibleRegions)); 1482 const Layer::State& s(layer->drawingState()); 1483 invalidateLayerStack(s.layerStack, dirty); 1484 } 1485 1486 mVisibleRegionsDirty |= visibleRegions; 1487} 1488 1489void SurfaceFlinger::invalidateHwcGeometry() 1490{ 1491 mHwWorkListDirty = true; 1492} 1493 1494 1495void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1496 const Region& inDirtyRegion) 1497{ 1498 Region dirtyRegion(inDirtyRegion); 1499 1500 // compute the invalid region 1501 hw->swapRegion.orSelf(dirtyRegion); 1502 1503 uint32_t flags = hw->getFlags(); 1504 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1505 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1506 // takes a rectangle, we must make sure to update that whole 1507 // rectangle in that case 1508 dirtyRegion.set(hw->swapRegion.bounds()); 1509 } else { 1510 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1511 // We need to redraw the rectangle that will be updated 1512 // (pushed to the framebuffer). 1513 // This is needed because PARTIAL_UPDATES only takes one 1514 // rectangle instead of a region (see DisplayDevice::flip()) 1515 dirtyRegion.set(hw->swapRegion.bounds()); 1516 } else { 1517 // we need to redraw everything (the whole screen) 1518 dirtyRegion.set(hw->bounds()); 1519 hw->swapRegion = dirtyRegion; 1520 } 1521 } 1522 1523 doComposeSurfaces(hw, dirtyRegion); 1524 1525 // update the swap region and clear the dirty region 1526 hw->swapRegion.orSelf(dirtyRegion); 1527 1528 // swap buffers (presentation) 1529 hw->swapBuffers(getHwComposer()); 1530} 1531 1532void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1533{ 1534 const int32_t id = hw->getHwcDisplayId(); 1535 HWComposer& hwc(getHwComposer()); 1536 HWComposer::LayerListIterator cur = hwc.begin(id); 1537 const HWComposer::LayerListIterator end = hwc.end(id); 1538 1539 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1540 if (hasGlesComposition) { 1541 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1542 1543 // set the frame buffer 1544 glMatrixMode(GL_MODELVIEW); 1545 glLoadIdentity(); 1546 1547 // Never touch the framebuffer if we don't have any framebuffer layers 1548 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1549 if (hasHwcComposition) { 1550 // when using overlays, we assume a fully transparent framebuffer 1551 // NOTE: we could reduce how much we need to clear, for instance 1552 // remove where there are opaque FB layers. however, on some 1553 // GPUs doing a "clean slate" glClear might be more efficient. 1554 // We'll revisit later if needed. 1555 glClearColor(0, 0, 0, 0); 1556 glClear(GL_COLOR_BUFFER_BIT); 1557 } else { 1558 // we start with the whole screen area 1559 const Region bounds(hw->getBounds()); 1560 1561 // we remove the scissor part 1562 // we're left with the letterbox region 1563 // (common case is that letterbox ends-up being empty) 1564 const Region letterbox(bounds.subtract(hw->getScissor())); 1565 1566 // compute the area to clear 1567 Region region(hw->undefinedRegion.merge(letterbox)); 1568 1569 // but limit it to the dirty region 1570 region.andSelf(dirty); 1571 1572 // screen is already cleared here 1573 if (!region.isEmpty()) { 1574 // can happen with SurfaceView 1575 drawWormhole(hw, region); 1576 } 1577 } 1578 1579 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 1580 // just to be on the safe side, we don't set the 1581 // scissor on the main display. It should never be needed 1582 // anyways (though in theory it could since the API allows it). 1583 const Rect& bounds(hw->getBounds()); 1584 const Rect& scissor(hw->getScissor()); 1585 if (scissor != bounds) { 1586 // scissor doesn't match the screen's dimensions, so we 1587 // need to clear everything outside of it and enable 1588 // the GL scissor so we don't draw anything where we shouldn't 1589 const GLint height = hw->getHeight(); 1590 glScissor(scissor.left, height - scissor.bottom, 1591 scissor.getWidth(), scissor.getHeight()); 1592 // enable scissor for this frame 1593 glEnable(GL_SCISSOR_TEST); 1594 } 1595 } 1596 } 1597 1598 /* 1599 * and then, render the layers targeted at the framebuffer 1600 */ 1601 1602 const Vector< sp<Layer> >& layers(hw->getVisibleLayersSortedByZ()); 1603 const size_t count = layers.size(); 1604 const Transform& tr = hw->getTransform(); 1605 if (cur != end) { 1606 // we're using h/w composer 1607 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1608 const sp<Layer>& layer(layers[i]); 1609 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1610 if (!clip.isEmpty()) { 1611 switch (cur->getCompositionType()) { 1612 case HWC_OVERLAY: { 1613 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1614 && i 1615 && layer->isOpaque() 1616 && hasGlesComposition) { 1617 // never clear the very first layer since we're 1618 // guaranteed the FB is already cleared 1619 layer->clearWithOpenGL(hw, clip); 1620 } 1621 break; 1622 } 1623 case HWC_FRAMEBUFFER: { 1624 layer->draw(hw, clip); 1625 break; 1626 } 1627 case HWC_FRAMEBUFFER_TARGET: { 1628 // this should not happen as the iterator shouldn't 1629 // let us get there. 1630 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1631 break; 1632 } 1633 } 1634 } 1635 layer->setAcquireFence(hw, *cur); 1636 } 1637 } else { 1638 // we're not using h/w composer 1639 for (size_t i=0 ; i<count ; ++i) { 1640 const sp<Layer>& layer(layers[i]); 1641 const Region clip(dirty.intersect( 1642 tr.transform(layer->visibleRegion))); 1643 if (!clip.isEmpty()) { 1644 layer->draw(hw, clip); 1645 } 1646 } 1647 } 1648 1649 // disable scissor at the end of the frame 1650 glDisable(GL_SCISSOR_TEST); 1651} 1652 1653void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1654 const Region& region) const 1655{ 1656 glDisable(GL_TEXTURE_EXTERNAL_OES); 1657 glDisable(GL_TEXTURE_2D); 1658 glDisable(GL_BLEND); 1659 glColor4f(0,0,0,0); 1660 1661 const int32_t height = hw->getHeight(); 1662 Region::const_iterator it = region.begin(); 1663 Region::const_iterator const end = region.end(); 1664 while (it != end) { 1665 const Rect& r = *it++; 1666 GLfloat vertices[][2] = { 1667 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 1668 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 1669 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 1670 { (GLfloat) r.right, (GLfloat) (height - r.top) } 1671 }; 1672 glVertexPointer(2, GL_FLOAT, 0, vertices); 1673 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1674 } 1675} 1676 1677void SurfaceFlinger::addClientLayer(const sp<Client>& client, 1678 const sp<IBinder>& handle, 1679 const sp<IGraphicBufferProducer>& gbc, 1680 const sp<Layer>& lbc) 1681{ 1682 // attach this layer to the client 1683 client->attachLayer(handle, lbc); 1684 1685 // add this layer to the current state list 1686 Mutex::Autolock _l(mStateLock); 1687 mCurrentState.layersSortedByZ.add(lbc); 1688 mGraphicBufferProducerList.add(gbc->asBinder()); 1689} 1690 1691status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) 1692{ 1693 Mutex::Autolock _l(mStateLock); 1694 ssize_t index = mCurrentState.layersSortedByZ.remove(layer); 1695 if (index >= 0) { 1696 mLayersPendingRemoval.push(layer); 1697 mLayersRemoved = true; 1698 setTransactionFlags(eTransactionNeeded); 1699 return NO_ERROR; 1700 } 1701 return status_t(index); 1702} 1703 1704uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1705{ 1706 return android_atomic_release_load(&mTransactionFlags); 1707} 1708 1709uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1710{ 1711 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1712} 1713 1714uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1715{ 1716 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1717 if ((old & flags)==0) { // wake the server up 1718 signalTransaction(); 1719 } 1720 return old; 1721} 1722 1723void SurfaceFlinger::setTransactionState( 1724 const Vector<ComposerState>& state, 1725 const Vector<DisplayState>& displays, 1726 uint32_t flags) 1727{ 1728 ATRACE_CALL(); 1729 Mutex::Autolock _l(mStateLock); 1730 uint32_t transactionFlags = 0; 1731 1732 if (flags & eAnimation) { 1733 // For window updates that are part of an animation we must wait for 1734 // previous animation "frames" to be handled. 1735 while (mAnimTransactionPending) { 1736 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1737 if (CC_UNLIKELY(err != NO_ERROR)) { 1738 // just in case something goes wrong in SF, return to the 1739 // caller after a few seconds. 1740 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1741 "waiting for previous animation frame"); 1742 mAnimTransactionPending = false; 1743 break; 1744 } 1745 } 1746 } 1747 1748 size_t count = displays.size(); 1749 for (size_t i=0 ; i<count ; i++) { 1750 const DisplayState& s(displays[i]); 1751 transactionFlags |= setDisplayStateLocked(s); 1752 } 1753 1754 count = state.size(); 1755 for (size_t i=0 ; i<count ; i++) { 1756 const ComposerState& s(state[i]); 1757 // Here we need to check that the interface we're given is indeed 1758 // one of our own. A malicious client could give us a NULL 1759 // IInterface, or one of its own or even one of our own but a 1760 // different type. All these situations would cause us to crash. 1761 // 1762 // NOTE: it would be better to use RTTI as we could directly check 1763 // that we have a Client*. however, RTTI is disabled in Android. 1764 if (s.client != NULL) { 1765 sp<IBinder> binder = s.client->asBinder(); 1766 if (binder != NULL) { 1767 String16 desc(binder->getInterfaceDescriptor()); 1768 if (desc == ISurfaceComposerClient::descriptor) { 1769 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1770 transactionFlags |= setClientStateLocked(client, s.state); 1771 } 1772 } 1773 } 1774 } 1775 1776 if (transactionFlags) { 1777 // this triggers the transaction 1778 setTransactionFlags(transactionFlags); 1779 1780 // if this is a synchronous transaction, wait for it to take effect 1781 // before returning. 1782 if (flags & eSynchronous) { 1783 mTransactionPending = true; 1784 } 1785 if (flags & eAnimation) { 1786 mAnimTransactionPending = true; 1787 } 1788 while (mTransactionPending) { 1789 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1790 if (CC_UNLIKELY(err != NO_ERROR)) { 1791 // just in case something goes wrong in SF, return to the 1792 // called after a few seconds. 1793 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1794 mTransactionPending = false; 1795 break; 1796 } 1797 } 1798 } 1799} 1800 1801uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1802{ 1803 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1804 if (dpyIdx < 0) 1805 return 0; 1806 1807 uint32_t flags = 0; 1808 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1809 if (disp.isValid()) { 1810 const uint32_t what = s.what; 1811 if (what & DisplayState::eSurfaceChanged) { 1812 if (disp.surface->asBinder() != s.surface->asBinder()) { 1813 disp.surface = s.surface; 1814 flags |= eDisplayTransactionNeeded; 1815 } 1816 } 1817 if (what & DisplayState::eLayerStackChanged) { 1818 if (disp.layerStack != s.layerStack) { 1819 disp.layerStack = s.layerStack; 1820 flags |= eDisplayTransactionNeeded; 1821 } 1822 } 1823 if (what & DisplayState::eDisplayProjectionChanged) { 1824 if (disp.orientation != s.orientation) { 1825 disp.orientation = s.orientation; 1826 flags |= eDisplayTransactionNeeded; 1827 } 1828 if (disp.frame != s.frame) { 1829 disp.frame = s.frame; 1830 flags |= eDisplayTransactionNeeded; 1831 } 1832 if (disp.viewport != s.viewport) { 1833 disp.viewport = s.viewport; 1834 flags |= eDisplayTransactionNeeded; 1835 } 1836 } 1837 } 1838 return flags; 1839} 1840 1841uint32_t SurfaceFlinger::setClientStateLocked( 1842 const sp<Client>& client, 1843 const layer_state_t& s) 1844{ 1845 uint32_t flags = 0; 1846 sp<Layer> layer(client->getLayerUser(s.surface)); 1847 if (layer != 0) { 1848 const uint32_t what = s.what; 1849 if (what & layer_state_t::ePositionChanged) { 1850 if (layer->setPosition(s.x, s.y)) 1851 flags |= eTraversalNeeded; 1852 } 1853 if (what & layer_state_t::eLayerChanged) { 1854 // NOTE: index needs to be calculated before we update the state 1855 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1856 if (layer->setLayer(s.z)) { 1857 mCurrentState.layersSortedByZ.removeAt(idx); 1858 mCurrentState.layersSortedByZ.add(layer); 1859 // we need traversal (state changed) 1860 // AND transaction (list changed) 1861 flags |= eTransactionNeeded|eTraversalNeeded; 1862 } 1863 } 1864 if (what & layer_state_t::eSizeChanged) { 1865 if (layer->setSize(s.w, s.h)) { 1866 flags |= eTraversalNeeded; 1867 } 1868 } 1869 if (what & layer_state_t::eAlphaChanged) { 1870 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1871 flags |= eTraversalNeeded; 1872 } 1873 if (what & layer_state_t::eMatrixChanged) { 1874 if (layer->setMatrix(s.matrix)) 1875 flags |= eTraversalNeeded; 1876 } 1877 if (what & layer_state_t::eTransparentRegionChanged) { 1878 if (layer->setTransparentRegionHint(s.transparentRegion)) 1879 flags |= eTraversalNeeded; 1880 } 1881 if (what & layer_state_t::eVisibilityChanged) { 1882 if (layer->setFlags(s.flags, s.mask)) 1883 flags |= eTraversalNeeded; 1884 } 1885 if (what & layer_state_t::eCropChanged) { 1886 if (layer->setCrop(s.crop)) 1887 flags |= eTraversalNeeded; 1888 } 1889 if (what & layer_state_t::eLayerStackChanged) { 1890 // NOTE: index needs to be calculated before we update the state 1891 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1892 if (layer->setLayerStack(s.layerStack)) { 1893 mCurrentState.layersSortedByZ.removeAt(idx); 1894 mCurrentState.layersSortedByZ.add(layer); 1895 // we need traversal (state changed) 1896 // AND transaction (list changed) 1897 flags |= eTransactionNeeded|eTraversalNeeded; 1898 } 1899 } 1900 } 1901 return flags; 1902} 1903 1904status_t SurfaceFlinger::createLayer( 1905 const String8& name, 1906 const sp<Client>& client, 1907 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 1908 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp) 1909{ 1910 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1911 if (int32_t(w|h) < 0) { 1912 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1913 int(w), int(h)); 1914 return BAD_VALUE; 1915 } 1916 1917 status_t result = NO_ERROR; 1918 1919 sp<Layer> layer; 1920 1921 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1922 case ISurfaceComposerClient::eFXSurfaceNormal: 1923 result = createNormalLayer(client, 1924 name, w, h, flags, format, 1925 handle, gbp, &layer); 1926 break; 1927 case ISurfaceComposerClient::eFXSurfaceDim: 1928 result = createDimLayer(client, 1929 name, w, h, flags, 1930 handle, gbp, &layer); 1931 break; 1932 default: 1933 result = BAD_VALUE; 1934 break; 1935 } 1936 1937 if (result == NO_ERROR) { 1938 addClientLayer(client, *handle, *gbp, layer); 1939 setTransactionFlags(eTransactionNeeded); 1940 } 1941 return result; 1942} 1943 1944status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client, 1945 const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 1946 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1947{ 1948 // initialize the surfaces 1949 switch (format) { 1950 case PIXEL_FORMAT_TRANSPARENT: 1951 case PIXEL_FORMAT_TRANSLUCENT: 1952 format = PIXEL_FORMAT_RGBA_8888; 1953 break; 1954 case PIXEL_FORMAT_OPAQUE: 1955#ifdef NO_RGBX_8888 1956 format = PIXEL_FORMAT_RGB_565; 1957#else 1958 format = PIXEL_FORMAT_RGBX_8888; 1959#endif 1960 break; 1961 } 1962 1963#ifdef NO_RGBX_8888 1964 if (format == PIXEL_FORMAT_RGBX_8888) 1965 format = PIXEL_FORMAT_RGBA_8888; 1966#endif 1967 1968 *outLayer = new Layer(this, client, name, w, h, flags); 1969 status_t err = (*outLayer)->setBuffers(w, h, format, flags); 1970 if (err == NO_ERROR) { 1971 *handle = (*outLayer)->getHandle(); 1972 *gbp = (*outLayer)->getBufferQueue(); 1973 } 1974 1975 ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); 1976 return err; 1977} 1978 1979status_t SurfaceFlinger::createDimLayer(const sp<Client>& client, 1980 const String8& name, uint32_t w, uint32_t h, uint32_t flags, 1981 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1982{ 1983 *outLayer = new LayerDim(this, client, name, w, h, flags); 1984 *handle = (*outLayer)->getHandle(); 1985 *gbp = (*outLayer)->getBufferQueue(); 1986 return NO_ERROR; 1987} 1988 1989status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle) 1990{ 1991 // called by the window manager when it wants to remove a Layer 1992 status_t err = NO_ERROR; 1993 sp<Layer> l(client->getLayerUser(handle)); 1994 if (l != NULL) { 1995 err = removeLayer(l); 1996 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1997 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1998 } 1999 return err; 2000} 2001 2002status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer) 2003{ 2004 // called by ~LayerCleaner() when all references to the IBinder (handle) 2005 // are gone 2006 status_t err = NO_ERROR; 2007 sp<Layer> l(layer.promote()); 2008 if (l != NULL) { 2009 err = removeLayer(l); 2010 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 2011 "error removing layer=%p (%s)", l.get(), strerror(-err)); 2012 } 2013 return err; 2014} 2015 2016// --------------------------------------------------------------------------- 2017 2018void SurfaceFlinger::onInitializeDisplays() { 2019 // reset screen orientation and use primary layer stack 2020 Vector<ComposerState> state; 2021 Vector<DisplayState> displays; 2022 DisplayState d; 2023 d.what = DisplayState::eDisplayProjectionChanged | 2024 DisplayState::eLayerStackChanged; 2025 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2026 d.layerStack = 0; 2027 d.orientation = DisplayState::eOrientationDefault; 2028 d.frame.makeInvalid(); 2029 d.viewport.makeInvalid(); 2030 displays.add(d); 2031 setTransactionState(state, displays, 0); 2032 onScreenAcquired(getDefaultDisplayDevice()); 2033} 2034 2035void SurfaceFlinger::initializeDisplays() { 2036 class MessageScreenInitialized : public MessageBase { 2037 SurfaceFlinger* flinger; 2038 public: 2039 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2040 virtual bool handler() { 2041 flinger->onInitializeDisplays(); 2042 return true; 2043 } 2044 }; 2045 sp<MessageBase> msg = new MessageScreenInitialized(this); 2046 postMessageAsync(msg); // we may be called from main thread, use async message 2047} 2048 2049 2050void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2051 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2052 if (hw->isScreenAcquired()) { 2053 // this is expected, e.g. when power manager wakes up during boot 2054 ALOGD(" screen was previously acquired"); 2055 return; 2056 } 2057 2058 hw->acquireScreen(); 2059 int32_t type = hw->getDisplayType(); 2060 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2061 // built-in display, tell the HWC 2062 getHwComposer().acquire(type); 2063 2064 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2065 // FIXME: eventthread only knows about the main display right now 2066 mEventThread->onScreenAcquired(); 2067 } 2068 } 2069 mVisibleRegionsDirty = true; 2070 repaintEverything(); 2071} 2072 2073void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2074 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2075 if (!hw->isScreenAcquired()) { 2076 ALOGD(" screen was previously released"); 2077 return; 2078 } 2079 2080 hw->releaseScreen(); 2081 int32_t type = hw->getDisplayType(); 2082 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2083 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2084 // FIXME: eventthread only knows about the main display right now 2085 mEventThread->onScreenReleased(); 2086 } 2087 2088 // built-in display, tell the HWC 2089 getHwComposer().release(type); 2090 } 2091 mVisibleRegionsDirty = true; 2092 // from this point on, SF will stop drawing on this display 2093} 2094 2095void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2096 class MessageScreenAcquired : public MessageBase { 2097 SurfaceFlinger& mFlinger; 2098 sp<IBinder> mDisplay; 2099 public: 2100 MessageScreenAcquired(SurfaceFlinger& flinger, 2101 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2102 virtual bool handler() { 2103 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2104 if (hw == NULL) { 2105 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2106 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2107 ALOGW("Attempt to unblank virtual display"); 2108 } else { 2109 mFlinger.onScreenAcquired(hw); 2110 } 2111 return true; 2112 } 2113 }; 2114 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2115 postMessageSync(msg); 2116} 2117 2118void SurfaceFlinger::blank(const sp<IBinder>& display) { 2119 class MessageScreenReleased : public MessageBase { 2120 SurfaceFlinger& mFlinger; 2121 sp<IBinder> mDisplay; 2122 public: 2123 MessageScreenReleased(SurfaceFlinger& flinger, 2124 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2125 virtual bool handler() { 2126 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2127 if (hw == NULL) { 2128 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2129 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2130 ALOGW("Attempt to blank virtual display"); 2131 } else { 2132 mFlinger.onScreenReleased(hw); 2133 } 2134 return true; 2135 } 2136 }; 2137 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2138 postMessageSync(msg); 2139} 2140 2141// --------------------------------------------------------------------------- 2142 2143status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2144{ 2145 String8 result; 2146 2147 IPCThreadState* ipc = IPCThreadState::self(); 2148 const int pid = ipc->getCallingPid(); 2149 const int uid = ipc->getCallingUid(); 2150 if ((uid != AID_SHELL) && 2151 !PermissionCache::checkPermission(sDump, pid, uid)) { 2152 result.appendFormat("Permission Denial: " 2153 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", pid, uid); 2154 } else { 2155 // Try to get the main lock, but don't insist if we can't 2156 // (this would indicate SF is stuck, but we want to be able to 2157 // print something in dumpsys). 2158 int retry = 3; 2159 while (mStateLock.tryLock()<0 && --retry>=0) { 2160 usleep(1000000); 2161 } 2162 const bool locked(retry >= 0); 2163 if (!locked) { 2164 result.append( 2165 "SurfaceFlinger appears to be unresponsive, " 2166 "dumping anyways (no locks held)\n"); 2167 } 2168 2169 bool dumpAll = true; 2170 size_t index = 0; 2171 size_t numArgs = args.size(); 2172 if (numArgs) { 2173 if ((index < numArgs) && 2174 (args[index] == String16("--list"))) { 2175 index++; 2176 listLayersLocked(args, index, result); 2177 dumpAll = false; 2178 } 2179 2180 if ((index < numArgs) && 2181 (args[index] == String16("--latency"))) { 2182 index++; 2183 dumpStatsLocked(args, index, result); 2184 dumpAll = false; 2185 } 2186 2187 if ((index < numArgs) && 2188 (args[index] == String16("--latency-clear"))) { 2189 index++; 2190 clearStatsLocked(args, index, result); 2191 dumpAll = false; 2192 } 2193 } 2194 2195 if (dumpAll) { 2196 dumpAllLocked(args, index, result); 2197 } 2198 2199 if (locked) { 2200 mStateLock.unlock(); 2201 } 2202 } 2203 write(fd, result.string(), result.size()); 2204 return NO_ERROR; 2205} 2206 2207void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2208 String8& result) const 2209{ 2210 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2211 const size_t count = currentLayers.size(); 2212 for (size_t i=0 ; i<count ; i++) { 2213 const sp<Layer>& layer(currentLayers[i]); 2214 result.appendFormat("%s\n", layer->getName().string()); 2215 } 2216} 2217 2218void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2219 String8& result) const 2220{ 2221 String8 name; 2222 if (index < args.size()) { 2223 name = String8(args[index]); 2224 index++; 2225 } 2226 2227 const nsecs_t period = 2228 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 2229 result.appendFormat("%lld\n", period); 2230 2231 if (name.isEmpty()) { 2232 mAnimFrameTracker.dump(result); 2233 } else { 2234 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2235 const size_t count = currentLayers.size(); 2236 for (size_t i=0 ; i<count ; i++) { 2237 const sp<Layer>& layer(currentLayers[i]); 2238 if (name == layer->getName()) { 2239 layer->dumpStats(result); 2240 } 2241 } 2242 } 2243} 2244 2245void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2246 String8& result) 2247{ 2248 String8 name; 2249 if (index < args.size()) { 2250 name = String8(args[index]); 2251 index++; 2252 } 2253 2254 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2255 const size_t count = currentLayers.size(); 2256 for (size_t i=0 ; i<count ; i++) { 2257 const sp<Layer>& layer(currentLayers[i]); 2258 if (name.isEmpty() || (name == layer->getName())) { 2259 layer->clearStats(); 2260 } 2261 } 2262 2263 mAnimFrameTracker.clear(); 2264} 2265 2266/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2267{ 2268 static const char* config = 2269 " [sf" 2270#ifdef NO_RGBX_8888 2271 " NO_RGBX_8888" 2272#endif 2273#ifdef HAS_CONTEXT_PRIORITY 2274 " HAS_CONTEXT_PRIORITY" 2275#endif 2276#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2277 " NEVER_DEFAULT_TO_ASYNC_MODE" 2278#endif 2279#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2280 " TARGET_DISABLE_TRIPLE_BUFFERING" 2281#endif 2282 "]"; 2283 result.append(config); 2284} 2285 2286void SurfaceFlinger::dumpAllLocked(const Vector<String16>& args, size_t& index, 2287 String8& result) const 2288{ 2289 bool colorize = false; 2290 if (index < args.size() 2291 && (args[index] == String16("--color"))) { 2292 colorize = true; 2293 index++; 2294 } 2295 2296 Colorizer colorizer(colorize); 2297 2298 // figure out if we're stuck somewhere 2299 const nsecs_t now = systemTime(); 2300 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2301 const nsecs_t inTransaction(mDebugInTransaction); 2302 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2303 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2304 2305 /* 2306 * Dump library configuration. 2307 */ 2308 2309 colorizer.bold(result); 2310 result.append("Build configuration:"); 2311 colorizer.reset(result); 2312 appendSfConfigString(result); 2313 appendUiConfigString(result); 2314 appendGuiConfigString(result); 2315 result.append("\n"); 2316 2317 colorizer.bold(result); 2318 result.append("Sync configuration: "); 2319 colorizer.reset(result); 2320 result.append(SyncFeatures::getInstance().toString()); 2321 result.append("\n"); 2322 2323 /* 2324 * Dump the visible layer list 2325 */ 2326 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2327 const size_t count = currentLayers.size(); 2328 colorizer.bold(result); 2329 result.appendFormat("Visible layers (count = %d)\n", count); 2330 colorizer.reset(result); 2331 for (size_t i=0 ; i<count ; i++) { 2332 const sp<Layer>& layer(currentLayers[i]); 2333 layer->dump(result, colorizer); 2334 } 2335 2336 /* 2337 * Dump Display state 2338 */ 2339 2340 colorizer.bold(result); 2341 result.appendFormat("Displays (%d entries)\n", mDisplays.size()); 2342 colorizer.reset(result); 2343 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2344 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2345 hw->dump(result); 2346 } 2347 2348 /* 2349 * Dump SurfaceFlinger global state 2350 */ 2351 2352 colorizer.bold(result); 2353 result.append("SurfaceFlinger global state:\n"); 2354 colorizer.reset(result); 2355 2356 HWComposer& hwc(getHwComposer()); 2357 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2358 const GLExtensions& extensions(GLExtensions::getInstance()); 2359 2360 colorizer.bold(result); 2361 result.appendFormat("EGL implementation : %s\n", 2362 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_VERSION)); 2363 colorizer.reset(result); 2364 result.appendFormat("%s\n", 2365 eglQueryStringImplementationANDROID(mEGLDisplay, EGL_EXTENSIONS)); 2366 2367 colorizer.bold(result); 2368 result.appendFormat("GLES: %s, %s, %s\n", 2369 extensions.getVendor(), 2370 extensions.getRenderer(), 2371 extensions.getVersion()); 2372 colorizer.reset(result); 2373 result.appendFormat("%s\n", extensions.getExtension()); 2374 2375 hw->undefinedRegion.dump(result, "undefinedRegion"); 2376 result.appendFormat(" orientation=%d, canDraw=%d\n", 2377 hw->getOrientation(), hw->canDraw()); 2378 result.appendFormat( 2379 " last eglSwapBuffers() time: %f us\n" 2380 " last transaction time : %f us\n" 2381 " transaction-flags : %08x\n" 2382 " refresh-rate : %f fps\n" 2383 " x-dpi : %f\n" 2384 " y-dpi : %f\n" 2385 " EGL_NATIVE_VISUAL_ID : %d\n" 2386 " gpu_to_cpu_unsupported : %d\n" 2387 , 2388 mLastSwapBufferTime/1000.0, 2389 mLastTransactionTime/1000.0, 2390 mTransactionFlags, 2391 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2392 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2393 hwc.getDpiY(HWC_DISPLAY_PRIMARY), 2394 mEGLNativeVisualId, 2395 !mGpuToCpuSupported); 2396 2397 result.appendFormat(" eglSwapBuffers time: %f us\n", 2398 inSwapBuffersDuration/1000.0); 2399 2400 result.appendFormat(" transaction time: %f us\n", 2401 inTransactionDuration/1000.0); 2402 2403 /* 2404 * VSYNC state 2405 */ 2406 mEventThread->dump(result); 2407 2408 /* 2409 * Dump HWComposer state 2410 */ 2411 colorizer.bold(result); 2412 result.append("h/w composer state:\n"); 2413 colorizer.reset(result); 2414 result.appendFormat(" h/w composer %s and %s\n", 2415 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2416 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2417 hwc.dump(result); 2418 2419 /* 2420 * Dump gralloc state 2421 */ 2422 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2423 alloc.dump(result); 2424} 2425 2426const Vector< sp<Layer> >& 2427SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { 2428 // Note: mStateLock is held here 2429 wp<IBinder> dpy; 2430 for (size_t i=0 ; i<mDisplays.size() ; i++) { 2431 if (mDisplays.valueAt(i)->getHwcDisplayId() == id) { 2432 dpy = mDisplays.keyAt(i); 2433 break; 2434 } 2435 } 2436 if (dpy == NULL) { 2437 ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); 2438 // Just use the primary display so we have something to return 2439 dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); 2440 } 2441 return getDisplayDevice(dpy)->getVisibleLayersSortedByZ(); 2442} 2443 2444bool SurfaceFlinger::startDdmConnection() 2445{ 2446 void* libddmconnection_dso = 2447 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2448 if (!libddmconnection_dso) { 2449 return false; 2450 } 2451 void (*DdmConnection_start)(const char* name); 2452 DdmConnection_start = 2453 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2454 if (!DdmConnection_start) { 2455 dlclose(libddmconnection_dso); 2456 return false; 2457 } 2458 (*DdmConnection_start)(getServiceName()); 2459 return true; 2460} 2461 2462status_t SurfaceFlinger::onTransact( 2463 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2464{ 2465 switch (code) { 2466 case CREATE_CONNECTION: 2467 case CREATE_DISPLAY: 2468 case SET_TRANSACTION_STATE: 2469 case BOOT_FINISHED: 2470 case BLANK: 2471 case UNBLANK: 2472 { 2473 // codes that require permission check 2474 IPCThreadState* ipc = IPCThreadState::self(); 2475 const int pid = ipc->getCallingPid(); 2476 const int uid = ipc->getCallingUid(); 2477 if ((uid != AID_GRAPHICS) && 2478 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2479 ALOGE("Permission Denial: " 2480 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2481 return PERMISSION_DENIED; 2482 } 2483 break; 2484 } 2485 case CAPTURE_SCREEN: 2486 { 2487 // codes that require permission check 2488 IPCThreadState* ipc = IPCThreadState::self(); 2489 const int pid = ipc->getCallingPid(); 2490 const int uid = ipc->getCallingUid(); 2491 if ((uid != AID_GRAPHICS) && 2492 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2493 ALOGE("Permission Denial: " 2494 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2495 return PERMISSION_DENIED; 2496 } 2497 break; 2498 } 2499 } 2500 2501 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2502 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2503 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2504 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2505 IPCThreadState* ipc = IPCThreadState::self(); 2506 const int pid = ipc->getCallingPid(); 2507 const int uid = ipc->getCallingUid(); 2508 ALOGE("Permission Denial: " 2509 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2510 return PERMISSION_DENIED; 2511 } 2512 int n; 2513 switch (code) { 2514 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2515 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2516 return NO_ERROR; 2517 case 1002: // SHOW_UPDATES 2518 n = data.readInt32(); 2519 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2520 invalidateHwcGeometry(); 2521 repaintEverything(); 2522 return NO_ERROR; 2523 case 1004:{ // repaint everything 2524 repaintEverything(); 2525 return NO_ERROR; 2526 } 2527 case 1005:{ // force transaction 2528 setTransactionFlags( 2529 eTransactionNeeded| 2530 eDisplayTransactionNeeded| 2531 eTraversalNeeded); 2532 return NO_ERROR; 2533 } 2534 case 1006:{ // send empty update 2535 signalRefresh(); 2536 return NO_ERROR; 2537 } 2538 case 1008: // toggle use of hw composer 2539 n = data.readInt32(); 2540 mDebugDisableHWC = n ? 1 : 0; 2541 invalidateHwcGeometry(); 2542 repaintEverything(); 2543 return NO_ERROR; 2544 case 1009: // toggle use of transform hint 2545 n = data.readInt32(); 2546 mDebugDisableTransformHint = n ? 1 : 0; 2547 invalidateHwcGeometry(); 2548 repaintEverything(); 2549 return NO_ERROR; 2550 case 1010: // interrogate. 2551 reply->writeInt32(0); 2552 reply->writeInt32(0); 2553 reply->writeInt32(mDebugRegion); 2554 reply->writeInt32(0); 2555 reply->writeInt32(mDebugDisableHWC); 2556 return NO_ERROR; 2557 case 1013: { 2558 Mutex::Autolock _l(mStateLock); 2559 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2560 reply->writeInt32(hw->getPageFlipCount()); 2561 } 2562 return NO_ERROR; 2563 } 2564 } 2565 return err; 2566} 2567 2568void SurfaceFlinger::repaintEverything() { 2569 android_atomic_or(1, &mRepaintEverything); 2570 signalTransaction(); 2571} 2572 2573// --------------------------------------------------------------------------- 2574// Capture screen into an IGraphiBufferProducer 2575// --------------------------------------------------------------------------- 2576 2577status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2578 const sp<IGraphicBufferProducer>& producer, 2579 uint32_t reqWidth, uint32_t reqHeight, 2580 uint32_t minLayerZ, uint32_t maxLayerZ, 2581 bool isCpuConsumer) { 2582 2583 if (CC_UNLIKELY(display == 0)) 2584 return BAD_VALUE; 2585 2586 if (CC_UNLIKELY(producer == 0)) 2587 return BAD_VALUE; 2588 2589 class MessageCaptureScreen : public MessageBase { 2590 SurfaceFlinger* flinger; 2591 sp<IBinder> display; 2592 sp<IGraphicBufferProducer> producer; 2593 uint32_t reqWidth, reqHeight; 2594 uint32_t minLayerZ,maxLayerZ; 2595 bool isCpuConsumer; 2596 status_t result; 2597 public: 2598 MessageCaptureScreen(SurfaceFlinger* flinger, 2599 const sp<IBinder>& display, 2600 const sp<IGraphicBufferProducer>& producer, 2601 uint32_t reqWidth, uint32_t reqHeight, 2602 uint32_t minLayerZ, uint32_t maxLayerZ, bool isCpuConsumer) 2603 : flinger(flinger), display(display), producer(producer), 2604 reqWidth(reqWidth), reqHeight(reqHeight), 2605 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2606 isCpuConsumer(isCpuConsumer), 2607 result(PERMISSION_DENIED) 2608 { 2609 } 2610 status_t getResult() const { 2611 return result; 2612 } 2613 virtual bool handler() { 2614 Mutex::Autolock _l(flinger->mStateLock); 2615 sp<const DisplayDevice> hw(flinger->getDisplayDevice(display)); 2616 2617 bool useReadPixels = false; 2618 if (isCpuConsumer) { 2619 bool formatSupportedBytBitmap = 2620 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBA_8888) || 2621 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBX_8888); 2622 if (formatSupportedBytBitmap == false) { 2623 // the pixel format we have is not compatible with 2624 // Bitmap.java, which is the likely client of this API, 2625 // so we just revert to glReadPixels() in that case. 2626 useReadPixels = true; 2627 } 2628 if (flinger->mGpuToCpuSupported == false) { 2629 // When we know the GL->CPU path works, we can call 2630 // captureScreenImplLocked() directly, instead of using the 2631 // glReadPixels() workaround. 2632 useReadPixels = true; 2633 } 2634 } 2635 2636 if (!useReadPixels) { 2637 result = flinger->captureScreenImplLocked(hw, 2638 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2639 } else { 2640 result = flinger->captureScreenImplCpuConsumerLocked(hw, 2641 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2642 } 2643 return true; 2644 } 2645 }; 2646 2647 // make sure to process transactions before screenshots -- a transaction 2648 // might already be pending but scheduled for VSYNC; this guarantees we 2649 // will handle it before the screenshot. When VSYNC finally arrives 2650 // the scheduled transaction will be a no-op. If no transactions are 2651 // scheduled at this time, this will end-up being a no-op as well. 2652 mEventQueue.invalidateTransactionNow(); 2653 2654 sp<MessageBase> msg = new MessageCaptureScreen(this, 2655 display, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ, 2656 isCpuConsumer); 2657 status_t res = postMessageSync(msg); 2658 if (res == NO_ERROR) { 2659 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2660 } 2661 return res; 2662} 2663 2664 2665void SurfaceFlinger::renderScreenImplLocked( 2666 const sp<const DisplayDevice>& hw, 2667 uint32_t reqWidth, uint32_t reqHeight, 2668 uint32_t minLayerZ, uint32_t maxLayerZ, 2669 bool yswap) 2670{ 2671 ATRACE_CALL(); 2672 2673 // get screen geometry 2674 const uint32_t hw_w = hw->getWidth(); 2675 const uint32_t hw_h = hw->getHeight(); 2676 2677 const bool filtering = reqWidth != hw_w || reqWidth != hw_h; 2678 2679 // make sure to clear all GL error flags 2680 while ( glGetError() != GL_NO_ERROR ) ; 2681 2682 // set-up our viewport 2683 glViewport(0, 0, reqWidth, reqHeight); 2684 glMatrixMode(GL_PROJECTION); 2685 glLoadIdentity(); 2686 if (yswap) glOrthof(0, hw_w, hw_h, 0, 0, 1); 2687 else glOrthof(0, hw_w, 0, hw_h, 0, 1); 2688 glMatrixMode(GL_MODELVIEW); 2689 glLoadIdentity(); 2690 2691 // redraw the screen entirely... 2692 glDisable(GL_SCISSOR_TEST); 2693 glClearColor(0,0,0,1); 2694 glClear(GL_COLOR_BUFFER_BIT); 2695 glDisable(GL_TEXTURE_EXTERNAL_OES); 2696 glDisable(GL_TEXTURE_2D); 2697 2698 const LayerVector& layers( mDrawingState.layersSortedByZ ); 2699 const size_t count = layers.size(); 2700 for (size_t i=0 ; i<count ; ++i) { 2701 const sp<Layer>& layer(layers[i]); 2702 const Layer::State& state(layer->drawingState()); 2703 if (state.layerStack == hw->getLayerStack()) { 2704 if (state.z >= minLayerZ && state.z <= maxLayerZ) { 2705 if (layer->isVisible()) { 2706 if (filtering) layer->setFiltering(true); 2707 layer->draw(hw); 2708 if (filtering) layer->setFiltering(false); 2709 } 2710 } 2711 } 2712 } 2713 2714 // compositionComplete is needed for older driver 2715 hw->compositionComplete(); 2716} 2717 2718 2719status_t SurfaceFlinger::captureScreenImplLocked( 2720 const sp<const DisplayDevice>& hw, 2721 const sp<IGraphicBufferProducer>& producer, 2722 uint32_t reqWidth, uint32_t reqHeight, 2723 uint32_t minLayerZ, uint32_t maxLayerZ) 2724{ 2725 ATRACE_CALL(); 2726 2727 // get screen geometry 2728 const uint32_t hw_w = hw->getWidth(); 2729 const uint32_t hw_h = hw->getHeight(); 2730 2731 // if we have secure windows on this display, never allow the screen capture 2732 if (hw->getSecureLayerVisible()) { 2733 ALOGW("FB is protected: PERMISSION_DENIED"); 2734 return PERMISSION_DENIED; 2735 } 2736 2737 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2738 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2739 reqWidth, reqHeight, hw_w, hw_h); 2740 return BAD_VALUE; 2741 } 2742 2743 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2744 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2745 2746 // Create a surface to render into 2747 sp<Surface> surface = new Surface(producer); 2748 ANativeWindow* const window = surface.get(); 2749 2750 // set the buffer size to what the user requested 2751 native_window_set_buffers_user_dimensions(window, reqWidth, reqHeight); 2752 2753 // and create the corresponding EGLSurface 2754 EGLSurface eglSurface = eglCreateWindowSurface( 2755 mEGLDisplay, mEGLConfig, window, NULL); 2756 if (eglSurface == EGL_NO_SURFACE) { 2757 ALOGE("captureScreenImplLocked: eglCreateWindowSurface() failed 0x%4x", 2758 eglGetError()); 2759 return BAD_VALUE; 2760 } 2761 2762 if (!eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) { 2763 ALOGE("captureScreenImplLocked: eglMakeCurrent() failed 0x%4x", 2764 eglGetError()); 2765 eglDestroySurface(mEGLDisplay, eglSurface); 2766 return BAD_VALUE; 2767 } 2768 2769 renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, false); 2770 2771 // and finishing things up... 2772 if (eglSwapBuffers(mEGLDisplay, eglSurface) != EGL_TRUE) { 2773 ALOGE("captureScreenImplLocked: eglSwapBuffers() failed 0x%4x", 2774 eglGetError()); 2775 eglDestroySurface(mEGLDisplay, eglSurface); 2776 return BAD_VALUE; 2777 } 2778 2779 eglDestroySurface(mEGLDisplay, eglSurface); 2780 2781 return NO_ERROR; 2782} 2783 2784 2785status_t SurfaceFlinger::captureScreenImplCpuConsumerLocked( 2786 const sp<const DisplayDevice>& hw, 2787 const sp<IGraphicBufferProducer>& producer, 2788 uint32_t reqWidth, uint32_t reqHeight, 2789 uint32_t minLayerZ, uint32_t maxLayerZ) 2790{ 2791 ATRACE_CALL(); 2792 2793 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2794 return INVALID_OPERATION; 2795 } 2796 2797 // get screen geometry 2798 const uint32_t hw_w = hw->getWidth(); 2799 const uint32_t hw_h = hw->getHeight(); 2800 2801 // if we have secure windows on this display, never allow the screen capture 2802 if (hw->getSecureLayerVisible()) { 2803 ALOGW("FB is protected: PERMISSION_DENIED"); 2804 return PERMISSION_DENIED; 2805 } 2806 2807 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2808 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2809 reqWidth, reqHeight, hw_w, hw_h); 2810 return BAD_VALUE; 2811 } 2812 2813 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2814 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2815 2816 GLuint tname; 2817 glGenRenderbuffersOES(1, &tname); 2818 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2819 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, reqWidth, reqHeight); 2820 2821 // create a FBO 2822 GLuint name; 2823 glGenFramebuffersOES(1, &name); 2824 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2825 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2826 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2827 2828 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2829 2830 status_t result = NO_ERROR; 2831 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2832 2833 renderScreenImplLocked(hw, reqWidth, reqHeight, minLayerZ, maxLayerZ, true); 2834 2835 // Below we render the screenshot into the 2836 // CpuConsumer using glReadPixels from our FBO. 2837 // Some older drivers don't support the GL->CPU path so we 2838 // have to wrap it with a CPU->CPU path, which is what 2839 // glReadPixels essentially is. 2840 2841 sp<Surface> sur = new Surface(producer); 2842 ANativeWindow* window = sur.get(); 2843 2844 if (native_window_api_connect(window, NATIVE_WINDOW_API_CPU) == NO_ERROR) { 2845 int err = 0; 2846 err = native_window_set_buffers_dimensions(window, reqWidth, reqHeight); 2847 err |= native_window_set_buffers_format(window, HAL_PIXEL_FORMAT_RGBA_8888); 2848 err |= native_window_set_usage(window, 2849 GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN); 2850 2851 if (err == NO_ERROR) { 2852 ANativeWindowBuffer* buffer; 2853 if (native_window_dequeue_buffer_and_wait(window, &buffer) == NO_ERROR) { 2854 sp<GraphicBuffer> buf = static_cast<GraphicBuffer*>(buffer); 2855 void* vaddr; 2856 if (buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, &vaddr) == NO_ERROR) { 2857 glReadPixels(0, 0, buffer->stride, reqHeight, 2858 GL_RGBA, GL_UNSIGNED_BYTE, vaddr); 2859 buf->unlock(); 2860 } 2861 window->queueBuffer(window, buffer, -1); 2862 } 2863 } 2864 native_window_api_disconnect(window, NATIVE_WINDOW_API_CPU); 2865 } 2866 2867 } else { 2868 ALOGE("got GL_FRAMEBUFFER_COMPLETE_OES while taking screenshot"); 2869 result = INVALID_OPERATION; 2870 } 2871 2872 // back to main framebuffer 2873 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2874 glDeleteRenderbuffersOES(1, &tname); 2875 glDeleteFramebuffersOES(1, &name); 2876 2877 DisplayDevice::setViewportAndProjection(hw); 2878 2879 return result; 2880} 2881 2882// --------------------------------------------------------------------------- 2883 2884SurfaceFlinger::LayerVector::LayerVector() { 2885} 2886 2887SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2888 : SortedVector<sp<Layer> >(rhs) { 2889} 2890 2891int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2892 const void* rhs) const 2893{ 2894 // sort layers per layer-stack, then by z-order and finally by sequence 2895 const sp<Layer>& l(*reinterpret_cast<const sp<Layer>*>(lhs)); 2896 const sp<Layer>& r(*reinterpret_cast<const sp<Layer>*>(rhs)); 2897 2898 uint32_t ls = l->currentState().layerStack; 2899 uint32_t rs = r->currentState().layerStack; 2900 if (ls != rs) 2901 return ls - rs; 2902 2903 uint32_t lz = l->currentState().z; 2904 uint32_t rz = r->currentState().z; 2905 if (lz != rz) 2906 return lz - rz; 2907 2908 return l->sequence - r->sequence; 2909} 2910 2911// --------------------------------------------------------------------------- 2912 2913SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2914 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2915} 2916 2917SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2918 : type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) { 2919 viewport.makeInvalid(); 2920 frame.makeInvalid(); 2921} 2922 2923// --------------------------------------------------------------------------- 2924 2925}; // namespace android 2926