SurfaceFlinger.cpp revision 48bc05b56df9919fc39c5f2e3ea6535560eec98f
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <stdint.h> 20#include <sys/types.h> 21#include <errno.h> 22#include <math.h> 23#include <dlfcn.h> 24 25#include <EGL/egl.h> 26#include <GLES/gl.h> 27 28#include <cutils/log.h> 29#include <cutils/properties.h> 30 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryHeapBase.h> 34#include <binder/PermissionCache.h> 35 36#include <ui/DisplayInfo.h> 37 38#include <gui/BitTube.h> 39#include <gui/BufferQueue.h> 40#include <gui/GuiConfig.h> 41#include <gui/IDisplayEventConnection.h> 42#include <gui/Surface.h> 43#include <gui/GraphicBufferAlloc.h> 44 45#include <ui/GraphicBufferAllocator.h> 46#include <ui/PixelFormat.h> 47#include <ui/UiConfig.h> 48 49#include <utils/misc.h> 50#include <utils/String8.h> 51#include <utils/String16.h> 52#include <utils/StopWatch.h> 53#include <utils/Trace.h> 54 55#include <private/android_filesystem_config.h> 56 57#include "clz.h" 58#include "DdmConnection.h" 59#include "DisplayDevice.h" 60#include "Client.h" 61#include "EventThread.h" 62#include "GLExtensions.h" 63#include "Layer.h" 64#include "LayerDim.h" 65#include "SurfaceFlinger.h" 66 67#include "DisplayHardware/FramebufferSurface.h" 68#include "DisplayHardware/HWComposer.h" 69#include "DisplayHardware/VirtualDisplaySurface.h" 70 71 72#define EGL_VERSION_HW_ANDROID 0x3143 73 74#define DISPLAY_COUNT 1 75 76namespace android { 77// --------------------------------------------------------------------------- 78 79const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 80const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 81const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 82const String16 sDump("android.permission.DUMP"); 83 84// --------------------------------------------------------------------------- 85 86SurfaceFlinger::SurfaceFlinger() 87 : BnSurfaceComposer(), Thread(false), 88 mTransactionFlags(0), 89 mTransactionPending(false), 90 mAnimTransactionPending(false), 91 mLayersRemoved(false), 92 mRepaintEverything(0), 93 mBootTime(systemTime()), 94 mVisibleRegionsDirty(false), 95 mHwWorkListDirty(false), 96 mAnimCompositionPending(false), 97 mDebugRegion(0), 98 mDebugDDMS(0), 99 mDebugDisableHWC(0), 100 mDebugDisableTransformHint(0), 101 mDebugInSwapBuffers(0), 102 mLastSwapBufferTime(0), 103 mDebugInTransaction(0), 104 mLastTransactionTime(0), 105 mBootFinished(false) 106{ 107 ALOGI("SurfaceFlinger is starting"); 108 109 // debugging stuff... 110 char value[PROPERTY_VALUE_MAX]; 111 112 property_get("ro.bq.gpu_to_cpu_unsupported", value, "0"); 113 mGpuToCpuSupported = !atoi(value); 114 115 property_get("debug.sf.showupdates", value, "0"); 116 mDebugRegion = atoi(value); 117 118 property_get("debug.sf.ddms", value, "0"); 119 mDebugDDMS = atoi(value); 120 if (mDebugDDMS) { 121 if (!startDdmConnection()) { 122 // start failed, and DDMS debugging not enabled 123 mDebugDDMS = 0; 124 } 125 } 126 ALOGI_IF(mDebugRegion, "showupdates enabled"); 127 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 128} 129 130void SurfaceFlinger::onFirstRef() 131{ 132 mEventQueue.init(this); 133 134 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 135 136 // Wait for the main thread to be done with its initialization 137 mReadyToRunBarrier.wait(); 138} 139 140 141SurfaceFlinger::~SurfaceFlinger() 142{ 143 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 144 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 145 eglTerminate(display); 146} 147 148void SurfaceFlinger::binderDied(const wp<IBinder>& who) 149{ 150 // the window manager died on us. prepare its eulogy. 151 152 // restore initial conditions (default device unblank, etc) 153 initializeDisplays(); 154 155 // restart the boot-animation 156 startBootAnim(); 157} 158 159sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 160{ 161 sp<ISurfaceComposerClient> bclient; 162 sp<Client> client(new Client(this)); 163 status_t err = client->initCheck(); 164 if (err == NO_ERROR) { 165 bclient = client; 166 } 167 return bclient; 168} 169 170sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 171 bool secure) 172{ 173 class DisplayToken : public BBinder { 174 sp<SurfaceFlinger> flinger; 175 virtual ~DisplayToken() { 176 // no more references, this display must be terminated 177 Mutex::Autolock _l(flinger->mStateLock); 178 flinger->mCurrentState.displays.removeItem(this); 179 flinger->setTransactionFlags(eDisplayTransactionNeeded); 180 } 181 public: 182 DisplayToken(const sp<SurfaceFlinger>& flinger) 183 : flinger(flinger) { 184 } 185 }; 186 187 sp<BBinder> token = new DisplayToken(this); 188 189 Mutex::Autolock _l(mStateLock); 190 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 191 info.displayName = displayName; 192 info.isSecure = secure; 193 mCurrentState.displays.add(token, info); 194 195 return token; 196} 197 198void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { 199 ALOGW_IF(mBuiltinDisplays[type], 200 "Overwriting display token for display type %d", type); 201 mBuiltinDisplays[type] = new BBinder(); 202 DisplayDeviceState info(type); 203 // All non-virtual displays are currently considered secure. 204 info.isSecure = true; 205 mCurrentState.displays.add(mBuiltinDisplays[type], info); 206} 207 208sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 209 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 210 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 211 return NULL; 212 } 213 return mBuiltinDisplays[id]; 214} 215 216sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 217{ 218 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 219 return gba; 220} 221 222void SurfaceFlinger::bootFinished() 223{ 224 const nsecs_t now = systemTime(); 225 const nsecs_t duration = now - mBootTime; 226 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 227 mBootFinished = true; 228 229 // wait patiently for the window manager death 230 const String16 name("window"); 231 sp<IBinder> window(defaultServiceManager()->getService(name)); 232 if (window != 0) { 233 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 234 } 235 236 // stop boot animation 237 // formerly we would just kill the process, but we now ask it to exit so it 238 // can choose where to stop the animation. 239 property_set("service.bootanim.exit", "1"); 240} 241 242void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 243 class MessageDestroyGLTexture : public MessageBase { 244 GLuint texture; 245 public: 246 MessageDestroyGLTexture(GLuint texture) 247 : texture(texture) { 248 } 249 virtual bool handler() { 250 glDeleteTextures(1, &texture); 251 return true; 252 } 253 }; 254 postMessageAsync(new MessageDestroyGLTexture(texture)); 255} 256 257status_t SurfaceFlinger::selectConfigForAttribute( 258 EGLDisplay dpy, 259 EGLint const* attrs, 260 EGLint attribute, EGLint wanted, 261 EGLConfig* outConfig) 262{ 263 EGLConfig config = NULL; 264 EGLint numConfigs = -1, n=0; 265 eglGetConfigs(dpy, NULL, 0, &numConfigs); 266 EGLConfig* const configs = new EGLConfig[numConfigs]; 267 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 268 269 if (n) { 270 if (attribute != EGL_NONE) { 271 for (int i=0 ; i<n ; i++) { 272 EGLint value = 0; 273 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 274 if (wanted == value) { 275 *outConfig = configs[i]; 276 delete [] configs; 277 return NO_ERROR; 278 } 279 } 280 } else { 281 // just pick the first one 282 *outConfig = configs[0]; 283 delete [] configs; 284 return NO_ERROR; 285 } 286 } 287 delete [] configs; 288 return NAME_NOT_FOUND; 289} 290 291class EGLAttributeVector { 292 struct Attribute; 293 class Adder; 294 friend class Adder; 295 KeyedVector<Attribute, EGLint> mList; 296 struct Attribute { 297 Attribute() {}; 298 Attribute(EGLint v) : v(v) { } 299 EGLint v; 300 bool operator < (const Attribute& other) const { 301 // this places EGL_NONE at the end 302 EGLint lhs(v); 303 EGLint rhs(other.v); 304 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 305 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 306 return lhs < rhs; 307 } 308 }; 309 class Adder { 310 friend class EGLAttributeVector; 311 EGLAttributeVector& v; 312 EGLint attribute; 313 Adder(EGLAttributeVector& v, EGLint attribute) 314 : v(v), attribute(attribute) { 315 } 316 public: 317 void operator = (EGLint value) { 318 if (attribute != EGL_NONE) { 319 v.mList.add(attribute, value); 320 } 321 } 322 operator EGLint () const { return v.mList[attribute]; } 323 }; 324public: 325 EGLAttributeVector() { 326 mList.add(EGL_NONE, EGL_NONE); 327 } 328 void remove(EGLint attribute) { 329 if (attribute != EGL_NONE) { 330 mList.removeItem(attribute); 331 } 332 } 333 Adder operator [] (EGLint attribute) { 334 return Adder(*this, attribute); 335 } 336 EGLint operator [] (EGLint attribute) const { 337 return mList[attribute]; 338 } 339 // cast-operator to (EGLint const*) 340 operator EGLint const* () const { return &mList.keyAt(0).v; } 341}; 342 343EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 344 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 345 // it is to be used with WIFI displays 346 EGLConfig config; 347 EGLint dummy; 348 status_t err; 349 350 EGLAttributeVector attribs; 351 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 352 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 353 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 354 attribs[EGL_RED_SIZE] = 8; 355 attribs[EGL_GREEN_SIZE] = 8; 356 attribs[EGL_BLUE_SIZE] = 8; 357 358 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 359 if (!err) 360 goto success; 361 362 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 363 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 364 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 365 err = selectConfigForAttribute(display, attribs, 366 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 367 if (!err) 368 goto success; 369 370 // maybe we failed because of EGL_RECORDABLE_ANDROID 371 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 372 attribs.remove(EGL_RECORDABLE_ANDROID); 373 err = selectConfigForAttribute(display, attribs, 374 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 375 if (!err) 376 goto success; 377 378 // allow less than 24-bit color; the non-gpu-accelerated emulator only 379 // supports 16-bit color 380 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 381 attribs.remove(EGL_RED_SIZE); 382 attribs.remove(EGL_GREEN_SIZE); 383 attribs.remove(EGL_BLUE_SIZE); 384 err = selectConfigForAttribute(display, attribs, 385 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 386 if (!err) 387 goto success; 388 389 // this EGL is too lame for Android 390 ALOGE("no suitable EGLConfig found, giving up"); 391 392 return 0; 393 394success: 395 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 396 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 397 return config; 398} 399 400EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 401 // Also create our EGLContext 402 EGLint contextAttributes[] = { 403#ifdef EGL_IMG_context_priority 404#ifdef HAS_CONTEXT_PRIORITY 405#warning "using EGL_IMG_context_priority" 406 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 407#endif 408#endif 409 EGL_NONE, EGL_NONE 410 }; 411 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 412 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 413 return ctxt; 414} 415 416void SurfaceFlinger::initializeGL(EGLDisplay display) { 417 GLExtensions& extensions(GLExtensions::getInstance()); 418 extensions.initWithGLStrings( 419 glGetString(GL_VENDOR), 420 glGetString(GL_RENDERER), 421 glGetString(GL_VERSION), 422 glGetString(GL_EXTENSIONS), 423 eglQueryString(display, EGL_VENDOR), 424 eglQueryString(display, EGL_VERSION), 425 eglQueryString(display, EGL_EXTENSIONS)); 426 427 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 428 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 429 430 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 431 glPixelStorei(GL_PACK_ALIGNMENT, 4); 432 glEnableClientState(GL_VERTEX_ARRAY); 433 glShadeModel(GL_FLAT); 434 glDisable(GL_DITHER); 435 glDisable(GL_CULL_FACE); 436 437 struct pack565 { 438 inline uint16_t operator() (int r, int g, int b) const { 439 return (r<<11)|(g<<5)|b; 440 } 441 } pack565; 442 443 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 444 glGenTextures(1, &mProtectedTexName); 445 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 446 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 447 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 448 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 449 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 450 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 451 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 452 453 // print some debugging info 454 EGLint r,g,b,a; 455 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 456 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 457 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 458 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 459 ALOGI("EGL informations:"); 460 ALOGI("vendor : %s", extensions.getEglVendor()); 461 ALOGI("version : %s", extensions.getEglVersion()); 462 ALOGI("extensions: %s", extensions.getEglExtension()); 463 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 464 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 465 ALOGI("OpenGL ES informations:"); 466 ALOGI("vendor : %s", extensions.getVendor()); 467 ALOGI("renderer : %s", extensions.getRenderer()); 468 ALOGI("version : %s", extensions.getVersion()); 469 ALOGI("extensions: %s", extensions.getExtension()); 470 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 471 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 472} 473 474status_t SurfaceFlinger::readyToRun() 475{ 476 ALOGI( "SurfaceFlinger's main thread ready to run. " 477 "Initializing graphics H/W..."); 478 479 Mutex::Autolock _l(mStateLock); 480 481 // initialize EGL for the default display 482 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 483 eglInitialize(mEGLDisplay, NULL, NULL); 484 485 // Initialize the H/W composer object. There may or may not be an 486 // actual hardware composer underneath. 487 mHwc = new HWComposer(this, 488 *static_cast<HWComposer::EventHandler *>(this)); 489 490 // initialize the config and context 491 EGLint format = mHwc->getVisualID(); 492 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 493 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 494 495 // figure out which format we got 496 eglGetConfigAttrib(mEGLDisplay, mEGLConfig, 497 EGL_NATIVE_VISUAL_ID, &mEGLNativeVisualId); 498 499 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 500 "couldn't create EGLContext"); 501 502 // initialize our non-virtual displays 503 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 504 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 505 // set-up the displays that are already connected 506 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 507 // All non-virtual displays are currently considered secure. 508 bool isSecure = true; 509 createBuiltinDisplayLocked(type); 510 wp<IBinder> token = mBuiltinDisplays[i]; 511 512 sp<DisplayDevice> hw = new DisplayDevice(this, 513 type, isSecure, token, new FramebufferSurface(*mHwc, i), 514 mEGLConfig); 515 if (i > DisplayDevice::DISPLAY_PRIMARY) { 516 // FIXME: currently we don't get blank/unblank requests 517 // for displays other than the main display, so we always 518 // assume a connected display is unblanked. 519 ALOGD("marking display %d as acquired/unblanked", i); 520 hw->acquireScreen(); 521 } 522 mDisplays.add(token, hw); 523 } 524 } 525 526 // we need a GL context current in a few places, when initializing 527 // OpenGL ES (see below), or creating a layer, 528 // or when a texture is (asynchronously) destroyed, and for that 529 // we need a valid surface, so it's convenient to use the main display 530 // for that. 531 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 532 533 // initialize OpenGL ES 534 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 535 initializeGL(mEGLDisplay); 536 537 // start the EventThread 538 mEventThread = new EventThread(this); 539 mEventQueue.setEventThread(mEventThread); 540 541 // initialize our drawing state 542 mDrawingState = mCurrentState; 543 544 545 // We're now ready to accept clients... 546 mReadyToRunBarrier.open(); 547 548 // set initial conditions (e.g. unblank default device) 549 initializeDisplays(); 550 551 // start boot animation 552 startBootAnim(); 553 554 return NO_ERROR; 555} 556 557int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 558 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 559 type : mHwc->allocateDisplayId(); 560} 561 562void SurfaceFlinger::startBootAnim() { 563 // start boot animation 564 property_set("service.bootanim.exit", "0"); 565 property_set("ctl.start", "bootanim"); 566} 567 568uint32_t SurfaceFlinger::getMaxTextureSize() const { 569 return mMaxTextureSize; 570} 571 572uint32_t SurfaceFlinger::getMaxViewportDims() const { 573 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 574 mMaxViewportDims[0] : mMaxViewportDims[1]; 575} 576 577// ---------------------------------------------------------------------------- 578 579bool SurfaceFlinger::authenticateSurfaceTexture( 580 const sp<IGraphicBufferProducer>& bufferProducer) const { 581 Mutex::Autolock _l(mStateLock); 582 sp<IBinder> surfaceTextureBinder(bufferProducer->asBinder()); 583 return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0; 584} 585 586status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 587 int32_t type = NAME_NOT_FOUND; 588 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 589 if (display == mBuiltinDisplays[i]) { 590 type = i; 591 break; 592 } 593 } 594 595 if (type < 0) { 596 return type; 597 } 598 599 const HWComposer& hwc(getHwComposer()); 600 float xdpi = hwc.getDpiX(type); 601 float ydpi = hwc.getDpiY(type); 602 603 // TODO: Not sure if display density should handled by SF any longer 604 class Density { 605 static int getDensityFromProperty(char const* propName) { 606 char property[PROPERTY_VALUE_MAX]; 607 int density = 0; 608 if (property_get(propName, property, NULL) > 0) { 609 density = atoi(property); 610 } 611 return density; 612 } 613 public: 614 static int getEmuDensity() { 615 return getDensityFromProperty("qemu.sf.lcd_density"); } 616 static int getBuildDensity() { 617 return getDensityFromProperty("ro.sf.lcd_density"); } 618 }; 619 620 if (type == DisplayDevice::DISPLAY_PRIMARY) { 621 // The density of the device is provided by a build property 622 float density = Density::getBuildDensity() / 160.0f; 623 if (density == 0) { 624 // the build doesn't provide a density -- this is wrong! 625 // use xdpi instead 626 ALOGE("ro.sf.lcd_density must be defined as a build property"); 627 density = xdpi / 160.0f; 628 } 629 if (Density::getEmuDensity()) { 630 // if "qemu.sf.lcd_density" is specified, it overrides everything 631 xdpi = ydpi = density = Density::getEmuDensity(); 632 density /= 160.0f; 633 } 634 info->density = density; 635 636 // TODO: this needs to go away (currently needed only by webkit) 637 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 638 info->orientation = hw->getOrientation(); 639 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 640 } else { 641 // TODO: where should this value come from? 642 static const int TV_DENSITY = 213; 643 info->density = TV_DENSITY / 160.0f; 644 info->orientation = 0; 645 } 646 647 info->w = hwc.getWidth(type); 648 info->h = hwc.getHeight(type); 649 info->xdpi = xdpi; 650 info->ydpi = ydpi; 651 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 652 653 // All non-virtual displays are currently considered secure. 654 info->secure = true; 655 656 return NO_ERROR; 657} 658 659// ---------------------------------------------------------------------------- 660 661sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 662 return mEventThread->createEventConnection(); 663} 664 665// ---------------------------------------------------------------------------- 666 667void SurfaceFlinger::waitForEvent() { 668 mEventQueue.waitMessage(); 669} 670 671void SurfaceFlinger::signalTransaction() { 672 mEventQueue.invalidate(); 673} 674 675void SurfaceFlinger::signalLayerUpdate() { 676 mEventQueue.invalidate(); 677} 678 679void SurfaceFlinger::signalRefresh() { 680 mEventQueue.refresh(); 681} 682 683status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 684 nsecs_t reltime, uint32_t flags) { 685 return mEventQueue.postMessage(msg, reltime); 686} 687 688status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 689 nsecs_t reltime, uint32_t flags) { 690 status_t res = mEventQueue.postMessage(msg, reltime); 691 if (res == NO_ERROR) { 692 msg->wait(); 693 } 694 return res; 695} 696 697bool SurfaceFlinger::threadLoop() { 698 waitForEvent(); 699 return true; 700} 701 702void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 703 if (mEventThread == NULL) { 704 // This is a temporary workaround for b/7145521. A non-null pointer 705 // does not mean EventThread has finished initializing, so this 706 // is not a correct fix. 707 ALOGW("WARNING: EventThread not started, ignoring vsync"); 708 return; 709 } 710 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 711 // we should only receive DisplayDevice::DisplayType from the vsync callback 712 mEventThread->onVSyncReceived(type, timestamp); 713 } 714} 715 716void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 717 if (mEventThread == NULL) { 718 // This is a temporary workaround for b/7145521. A non-null pointer 719 // does not mean EventThread has finished initializing, so this 720 // is not a correct fix. 721 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 722 return; 723 } 724 725 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 726 Mutex::Autolock _l(mStateLock); 727 if (connected) { 728 createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); 729 } else { 730 mCurrentState.displays.removeItem(mBuiltinDisplays[type]); 731 mBuiltinDisplays[type].clear(); 732 } 733 setTransactionFlags(eDisplayTransactionNeeded); 734 735 // Defer EventThread notification until SF has updated mDisplays. 736 } 737} 738 739void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 740 getHwComposer().eventControl(disp, event, enabled); 741} 742 743void SurfaceFlinger::onMessageReceived(int32_t what) { 744 ATRACE_CALL(); 745 switch (what) { 746 case MessageQueue::INVALIDATE: 747 handleMessageTransaction(); 748 handleMessageInvalidate(); 749 signalRefresh(); 750 break; 751 case MessageQueue::REFRESH: 752 handleMessageRefresh(); 753 break; 754 } 755} 756 757void SurfaceFlinger::handleMessageTransaction() { 758 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 759 if (transactionFlags) { 760 handleTransaction(transactionFlags); 761 } 762} 763 764void SurfaceFlinger::handleMessageInvalidate() { 765 ATRACE_CALL(); 766 handlePageFlip(); 767} 768 769void SurfaceFlinger::handleMessageRefresh() { 770 ATRACE_CALL(); 771 preComposition(); 772 rebuildLayerStacks(); 773 setUpHWComposer(); 774 doDebugFlashRegions(); 775 doComposition(); 776 postComposition(); 777} 778 779void SurfaceFlinger::doDebugFlashRegions() 780{ 781 // is debugging enabled 782 if (CC_LIKELY(!mDebugRegion)) 783 return; 784 785 const bool repaintEverything = mRepaintEverything; 786 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 787 const sp<DisplayDevice>& hw(mDisplays[dpy]); 788 if (hw->canDraw()) { 789 // transform the dirty region into this screen's coordinate space 790 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 791 if (!dirtyRegion.isEmpty()) { 792 // redraw the whole screen 793 doComposeSurfaces(hw, Region(hw->bounds())); 794 795 // and draw the dirty region 796 glDisable(GL_TEXTURE_EXTERNAL_OES); 797 glDisable(GL_TEXTURE_2D); 798 glDisable(GL_BLEND); 799 glColor4f(1, 0, 1, 1); 800 const int32_t height = hw->getHeight(); 801 Region::const_iterator it = dirtyRegion.begin(); 802 Region::const_iterator const end = dirtyRegion.end(); 803 while (it != end) { 804 const Rect& r = *it++; 805 GLfloat vertices[][2] = { 806 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 807 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 808 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 809 { (GLfloat) r.right, (GLfloat) (height - r.top) } 810 }; 811 glVertexPointer(2, GL_FLOAT, 0, vertices); 812 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 813 } 814 hw->compositionComplete(); 815 hw->swapBuffers(getHwComposer()); 816 } 817 } 818 } 819 820 postFramebuffer(); 821 822 if (mDebugRegion > 1) { 823 usleep(mDebugRegion * 1000); 824 } 825 826 HWComposer& hwc(getHwComposer()); 827 if (hwc.initCheck() == NO_ERROR) { 828 status_t err = hwc.prepare(); 829 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 830 } 831} 832 833void SurfaceFlinger::preComposition() 834{ 835 bool needExtraInvalidate = false; 836 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 837 const size_t count = currentLayers.size(); 838 for (size_t i=0 ; i<count ; i++) { 839 if (currentLayers[i]->onPreComposition()) { 840 needExtraInvalidate = true; 841 } 842 } 843 if (needExtraInvalidate) { 844 signalLayerUpdate(); 845 } 846} 847 848void SurfaceFlinger::postComposition() 849{ 850 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 851 const size_t count = currentLayers.size(); 852 for (size_t i=0 ; i<count ; i++) { 853 currentLayers[i]->onPostComposition(); 854 } 855 856 if (mAnimCompositionPending) { 857 mAnimCompositionPending = false; 858 859 const HWComposer& hwc = getHwComposer(); 860 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 861 if (presentFence->isValid()) { 862 mAnimFrameTracker.setActualPresentFence(presentFence); 863 } else { 864 // The HWC doesn't support present fences, so use the refresh 865 // timestamp instead. 866 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 867 mAnimFrameTracker.setActualPresentTime(presentTime); 868 } 869 mAnimFrameTracker.advanceFrame(); 870 } 871} 872 873void SurfaceFlinger::rebuildLayerStacks() { 874 // rebuild the visible layer list per screen 875 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 876 ATRACE_CALL(); 877 mVisibleRegionsDirty = false; 878 invalidateHwcGeometry(); 879 880 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 881 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 882 Region opaqueRegion; 883 Region dirtyRegion; 884 Vector< sp<Layer> > layersSortedByZ; 885 const sp<DisplayDevice>& hw(mDisplays[dpy]); 886 const Transform& tr(hw->getTransform()); 887 const Rect bounds(hw->getBounds()); 888 if (hw->canDraw()) { 889 SurfaceFlinger::computeVisibleRegions(currentLayers, 890 hw->getLayerStack(), dirtyRegion, opaqueRegion); 891 892 const size_t count = currentLayers.size(); 893 for (size_t i=0 ; i<count ; i++) { 894 const sp<Layer>& layer(currentLayers[i]); 895 const Layer::State& s(layer->drawingState()); 896 if (s.layerStack == hw->getLayerStack()) { 897 Region drawRegion(tr.transform( 898 layer->visibleNonTransparentRegion)); 899 drawRegion.andSelf(bounds); 900 if (!drawRegion.isEmpty()) { 901 layersSortedByZ.add(layer); 902 } 903 } 904 } 905 } 906 hw->setVisibleLayersSortedByZ(layersSortedByZ); 907 hw->undefinedRegion.set(bounds); 908 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 909 hw->dirtyRegion.orSelf(dirtyRegion); 910 } 911 } 912} 913 914void SurfaceFlinger::setUpHWComposer() { 915 HWComposer& hwc(getHwComposer()); 916 if (hwc.initCheck() == NO_ERROR) { 917 // build the h/w work list 918 if (CC_UNLIKELY(mHwWorkListDirty)) { 919 mHwWorkListDirty = false; 920 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 921 sp<const DisplayDevice> hw(mDisplays[dpy]); 922 const int32_t id = hw->getHwcDisplayId(); 923 if (id >= 0) { 924 const Vector< sp<Layer> >& currentLayers( 925 hw->getVisibleLayersSortedByZ()); 926 const size_t count = currentLayers.size(); 927 if (hwc.createWorkList(id, count) == NO_ERROR) { 928 HWComposer::LayerListIterator cur = hwc.begin(id); 929 const HWComposer::LayerListIterator end = hwc.end(id); 930 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 931 const sp<Layer>& layer(currentLayers[i]); 932 layer->setGeometry(hw, *cur); 933 if (mDebugDisableHWC || mDebugRegion) { 934 cur->setSkip(true); 935 } 936 } 937 } 938 } 939 } 940 } 941 942 // set the per-frame data 943 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 944 sp<const DisplayDevice> hw(mDisplays[dpy]); 945 const int32_t id = hw->getHwcDisplayId(); 946 if (id >= 0) { 947 const Vector< sp<Layer> >& currentLayers( 948 hw->getVisibleLayersSortedByZ()); 949 const size_t count = currentLayers.size(); 950 HWComposer::LayerListIterator cur = hwc.begin(id); 951 const HWComposer::LayerListIterator end = hwc.end(id); 952 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 953 /* 954 * update the per-frame h/w composer data for each layer 955 * and build the transparent region of the FB 956 */ 957 const sp<Layer>& layer(currentLayers[i]); 958 layer->setPerFrameData(hw, *cur); 959 } 960 } 961 } 962 963 status_t err = hwc.prepare(); 964 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 965 } 966} 967 968void SurfaceFlinger::doComposition() { 969 ATRACE_CALL(); 970 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 971 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 972 const sp<DisplayDevice>& hw(mDisplays[dpy]); 973 if (hw->canDraw()) { 974 // transform the dirty region into this screen's coordinate space 975 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 976 977 // repaint the framebuffer (if needed) 978 doDisplayComposition(hw, dirtyRegion); 979 980 hw->dirtyRegion.clear(); 981 hw->flip(hw->swapRegion); 982 hw->swapRegion.clear(); 983 } 984 // inform the h/w that we're done compositing 985 hw->compositionComplete(); 986 } 987 postFramebuffer(); 988} 989 990void SurfaceFlinger::postFramebuffer() 991{ 992 ATRACE_CALL(); 993 994 const nsecs_t now = systemTime(); 995 mDebugInSwapBuffers = now; 996 997 HWComposer& hwc(getHwComposer()); 998 if (hwc.initCheck() == NO_ERROR) { 999 if (!hwc.supportsFramebufferTarget()) { 1000 // EGL spec says: 1001 // "surface must be bound to the calling thread's current context, 1002 // for the current rendering API." 1003 DisplayDevice::makeCurrent(mEGLDisplay, 1004 getDefaultDisplayDevice(), mEGLContext); 1005 } 1006 hwc.commit(); 1007 } 1008 1009 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1010 sp<const DisplayDevice> hw(mDisplays[dpy]); 1011 const Vector< sp<Layer> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1012 hw->onSwapBuffersCompleted(hwc); 1013 const size_t count = currentLayers.size(); 1014 int32_t id = hw->getHwcDisplayId(); 1015 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1016 HWComposer::LayerListIterator cur = hwc.begin(id); 1017 const HWComposer::LayerListIterator end = hwc.end(id); 1018 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1019 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1020 } 1021 } else { 1022 for (size_t i = 0; i < count; i++) { 1023 currentLayers[i]->onLayerDisplayed(hw, NULL); 1024 } 1025 } 1026 } 1027 1028 mLastSwapBufferTime = systemTime() - now; 1029 mDebugInSwapBuffers = 0; 1030} 1031 1032void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1033{ 1034 ATRACE_CALL(); 1035 1036 Mutex::Autolock _l(mStateLock); 1037 const nsecs_t now = systemTime(); 1038 mDebugInTransaction = now; 1039 1040 // Here we're guaranteed that some transaction flags are set 1041 // so we can call handleTransactionLocked() unconditionally. 1042 // We call getTransactionFlags(), which will also clear the flags, 1043 // with mStateLock held to guarantee that mCurrentState won't change 1044 // until the transaction is committed. 1045 1046 transactionFlags = getTransactionFlags(eTransactionMask); 1047 handleTransactionLocked(transactionFlags); 1048 1049 mLastTransactionTime = systemTime() - now; 1050 mDebugInTransaction = 0; 1051 invalidateHwcGeometry(); 1052 // here the transaction has been committed 1053} 1054 1055void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1056{ 1057 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1058 const size_t count = currentLayers.size(); 1059 1060 /* 1061 * Traversal of the children 1062 * (perform the transaction for each of them if needed) 1063 */ 1064 1065 if (transactionFlags & eTraversalNeeded) { 1066 for (size_t i=0 ; i<count ; i++) { 1067 const sp<Layer>& layer(currentLayers[i]); 1068 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1069 if (!trFlags) continue; 1070 1071 const uint32_t flags = layer->doTransaction(0); 1072 if (flags & Layer::eVisibleRegion) 1073 mVisibleRegionsDirty = true; 1074 } 1075 } 1076 1077 /* 1078 * Perform display own transactions if needed 1079 */ 1080 1081 if (transactionFlags & eDisplayTransactionNeeded) { 1082 // here we take advantage of Vector's copy-on-write semantics to 1083 // improve performance by skipping the transaction entirely when 1084 // know that the lists are identical 1085 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1086 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1087 if (!curr.isIdenticalTo(draw)) { 1088 mVisibleRegionsDirty = true; 1089 const size_t cc = curr.size(); 1090 size_t dc = draw.size(); 1091 1092 // find the displays that were removed 1093 // (ie: in drawing state but not in current state) 1094 // also handle displays that changed 1095 // (ie: displays that are in both lists) 1096 for (size_t i=0 ; i<dc ; i++) { 1097 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1098 if (j < 0) { 1099 // in drawing state but not in current state 1100 if (!draw[i].isMainDisplay()) { 1101 // Call makeCurrent() on the primary display so we can 1102 // be sure that nothing associated with this display 1103 // is current. 1104 const sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1105 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1106 mDisplays.removeItem(draw.keyAt(i)); 1107 getHwComposer().disconnectDisplay(draw[i].type); 1108 if (draw[i].type < DisplayDevice::NUM_DISPLAY_TYPES) 1109 mEventThread->onHotplugReceived(draw[i].type, false); 1110 } else { 1111 ALOGW("trying to remove the main display"); 1112 } 1113 } else { 1114 // this display is in both lists. see if something changed. 1115 const DisplayDeviceState& state(curr[j]); 1116 const wp<IBinder>& display(curr.keyAt(j)); 1117 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1118 // changing the surface is like destroying and 1119 // recreating the DisplayDevice, so we just remove it 1120 // from the drawing state, so that it get re-added 1121 // below. 1122 mDisplays.removeItem(display); 1123 mDrawingState.displays.removeItemsAt(i); 1124 dc--; i--; 1125 // at this point we must loop to the next item 1126 continue; 1127 } 1128 1129 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1130 if (disp != NULL) { 1131 if (state.layerStack != draw[i].layerStack) { 1132 disp->setLayerStack(state.layerStack); 1133 } 1134 if ((state.orientation != draw[i].orientation) 1135 || (state.viewport != draw[i].viewport) 1136 || (state.frame != draw[i].frame)) 1137 { 1138 disp->setProjection(state.orientation, 1139 state.viewport, state.frame); 1140 } 1141 } 1142 } 1143 } 1144 1145 // find displays that were added 1146 // (ie: in current state but not in drawing state) 1147 for (size_t i=0 ; i<cc ; i++) { 1148 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1149 const DisplayDeviceState& state(curr[i]); 1150 1151 sp<DisplaySurface> dispSurface; 1152 if (state.isVirtualDisplay()) { 1153 if (state.surface != NULL) { 1154 dispSurface = new VirtualDisplaySurface( 1155 *mHwc, state.type, state.surface, 1156 state.displayName); 1157 } 1158 } else { 1159 ALOGE_IF(state.surface!=NULL, 1160 "adding a supported display, but rendering " 1161 "surface is provided (%p), ignoring it", 1162 state.surface.get()); 1163 1164 // for supported (by hwc) displays we provide our 1165 // own rendering surface 1166 dispSurface = new FramebufferSurface(*mHwc, state.type); 1167 } 1168 1169 const wp<IBinder>& display(curr.keyAt(i)); 1170 if (dispSurface != NULL) { 1171 sp<DisplayDevice> hw = new DisplayDevice(this, 1172 state.type, state.isSecure, display, 1173 dispSurface, mEGLConfig); 1174 hw->setLayerStack(state.layerStack); 1175 hw->setProjection(state.orientation, 1176 state.viewport, state.frame); 1177 hw->setDisplayName(state.displayName); 1178 mDisplays.add(display, hw); 1179 if (state.type < DisplayDevice::NUM_DISPLAY_TYPES) 1180 mEventThread->onHotplugReceived(state.type, true); 1181 } 1182 } 1183 } 1184 } 1185 } 1186 1187 if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { 1188 // The transform hint might have changed for some layers 1189 // (either because a display has changed, or because a layer 1190 // as changed). 1191 // 1192 // Walk through all the layers in currentLayers, 1193 // and update their transform hint. 1194 // 1195 // If a layer is visible only on a single display, then that 1196 // display is used to calculate the hint, otherwise we use the 1197 // default display. 1198 // 1199 // NOTE: we do this here, rather than in rebuildLayerStacks() so that 1200 // the hint is set before we acquire a buffer from the surface texture. 1201 // 1202 // NOTE: layer transactions have taken place already, so we use their 1203 // drawing state. However, SurfaceFlinger's own transaction has not 1204 // happened yet, so we must use the current state layer list 1205 // (soon to become the drawing state list). 1206 // 1207 sp<const DisplayDevice> disp; 1208 uint32_t currentlayerStack = 0; 1209 for (size_t i=0; i<count; i++) { 1210 // NOTE: we rely on the fact that layers are sorted by 1211 // layerStack first (so we don't have to traverse the list 1212 // of displays for every layer). 1213 const sp<Layer>& layer(currentLayers[i]); 1214 uint32_t layerStack = layer->drawingState().layerStack; 1215 if (i==0 || currentlayerStack != layerStack) { 1216 currentlayerStack = layerStack; 1217 // figure out if this layerstack is mirrored 1218 // (more than one display) if so, pick the default display, 1219 // if not, pick the only display it's on. 1220 disp.clear(); 1221 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1222 sp<const DisplayDevice> hw(mDisplays[dpy]); 1223 if (hw->getLayerStack() == currentlayerStack) { 1224 if (disp == NULL) { 1225 disp = hw; 1226 } else { 1227 disp = getDefaultDisplayDevice(); 1228 break; 1229 } 1230 } 1231 } 1232 } 1233 if (disp != NULL) { 1234 // presumably this means this layer is using a layerStack 1235 // that is not visible on any display 1236 layer->updateTransformHint(disp); 1237 } 1238 } 1239 } 1240 1241 1242 /* 1243 * Perform our own transaction if needed 1244 */ 1245 1246 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1247 if (currentLayers.size() > previousLayers.size()) { 1248 // layers have been added 1249 mVisibleRegionsDirty = true; 1250 } 1251 1252 // some layers might have been removed, so 1253 // we need to update the regions they're exposing. 1254 if (mLayersRemoved) { 1255 mLayersRemoved = false; 1256 mVisibleRegionsDirty = true; 1257 const size_t count = previousLayers.size(); 1258 for (size_t i=0 ; i<count ; i++) { 1259 const sp<Layer>& layer(previousLayers[i]); 1260 if (currentLayers.indexOf(layer) < 0) { 1261 // this layer is not visible anymore 1262 // TODO: we could traverse the tree from front to back and 1263 // compute the actual visible region 1264 // TODO: we could cache the transformed region 1265 const Layer::State& s(layer->drawingState()); 1266 Region visibleReg = s.transform.transform( 1267 Region(Rect(s.active.w, s.active.h))); 1268 invalidateLayerStack(s.layerStack, visibleReg); 1269 } 1270 } 1271 } 1272 1273 commitTransaction(); 1274} 1275 1276void SurfaceFlinger::commitTransaction() 1277{ 1278 if (!mLayersPendingRemoval.isEmpty()) { 1279 // Notify removed layers now that they can't be drawn from 1280 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1281 mLayersPendingRemoval[i]->onRemoved(); 1282 } 1283 mLayersPendingRemoval.clear(); 1284 } 1285 1286 // If this transaction is part of a window animation then the next frame 1287 // we composite should be considered an animation as well. 1288 mAnimCompositionPending = mAnimTransactionPending; 1289 1290 mDrawingState = mCurrentState; 1291 mTransactionPending = false; 1292 mAnimTransactionPending = false; 1293 mTransactionCV.broadcast(); 1294} 1295 1296void SurfaceFlinger::computeVisibleRegions( 1297 const LayerVector& currentLayers, uint32_t layerStack, 1298 Region& outDirtyRegion, Region& outOpaqueRegion) 1299{ 1300 ATRACE_CALL(); 1301 1302 Region aboveOpaqueLayers; 1303 Region aboveCoveredLayers; 1304 Region dirty; 1305 1306 outDirtyRegion.clear(); 1307 1308 size_t i = currentLayers.size(); 1309 while (i--) { 1310 const sp<Layer>& layer = currentLayers[i]; 1311 1312 // start with the whole surface at its current location 1313 const Layer::State& s(layer->drawingState()); 1314 1315 // only consider the layers on the given layer stack 1316 if (s.layerStack != layerStack) 1317 continue; 1318 1319 /* 1320 * opaqueRegion: area of a surface that is fully opaque. 1321 */ 1322 Region opaqueRegion; 1323 1324 /* 1325 * visibleRegion: area of a surface that is visible on screen 1326 * and not fully transparent. This is essentially the layer's 1327 * footprint minus the opaque regions above it. 1328 * Areas covered by a translucent surface are considered visible. 1329 */ 1330 Region visibleRegion; 1331 1332 /* 1333 * coveredRegion: area of a surface that is covered by all 1334 * visible regions above it (which includes the translucent areas). 1335 */ 1336 Region coveredRegion; 1337 1338 /* 1339 * transparentRegion: area of a surface that is hinted to be completely 1340 * transparent. This is only used to tell when the layer has no visible 1341 * non-transparent regions and can be removed from the layer list. It 1342 * does not affect the visibleRegion of this layer or any layers 1343 * beneath it. The hint may not be correct if apps don't respect the 1344 * SurfaceView restrictions (which, sadly, some don't). 1345 */ 1346 Region transparentRegion; 1347 1348 1349 // handle hidden surfaces by setting the visible region to empty 1350 if (CC_LIKELY(layer->isVisible())) { 1351 const bool translucent = !layer->isOpaque(); 1352 Rect bounds(s.transform.transform(layer->computeBounds())); 1353 visibleRegion.set(bounds); 1354 if (!visibleRegion.isEmpty()) { 1355 // Remove the transparent area from the visible region 1356 if (translucent) { 1357 const Transform tr(s.transform); 1358 if (tr.transformed()) { 1359 if (tr.preserveRects()) { 1360 // transform the transparent region 1361 transparentRegion = tr.transform(s.transparentRegion); 1362 } else { 1363 // transformation too complex, can't do the 1364 // transparent region optimization. 1365 transparentRegion.clear(); 1366 } 1367 } else { 1368 transparentRegion = s.transparentRegion; 1369 } 1370 } 1371 1372 // compute the opaque region 1373 const int32_t layerOrientation = s.transform.getOrientation(); 1374 if (s.alpha==255 && !translucent && 1375 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1376 // the opaque region is the layer's footprint 1377 opaqueRegion = visibleRegion; 1378 } 1379 } 1380 } 1381 1382 // Clip the covered region to the visible region 1383 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1384 1385 // Update aboveCoveredLayers for next (lower) layer 1386 aboveCoveredLayers.orSelf(visibleRegion); 1387 1388 // subtract the opaque region covered by the layers above us 1389 visibleRegion.subtractSelf(aboveOpaqueLayers); 1390 1391 // compute this layer's dirty region 1392 if (layer->contentDirty) { 1393 // we need to invalidate the whole region 1394 dirty = visibleRegion; 1395 // as well, as the old visible region 1396 dirty.orSelf(layer->visibleRegion); 1397 layer->contentDirty = false; 1398 } else { 1399 /* compute the exposed region: 1400 * the exposed region consists of two components: 1401 * 1) what's VISIBLE now and was COVERED before 1402 * 2) what's EXPOSED now less what was EXPOSED before 1403 * 1404 * note that (1) is conservative, we start with the whole 1405 * visible region but only keep what used to be covered by 1406 * something -- which mean it may have been exposed. 1407 * 1408 * (2) handles areas that were not covered by anything but got 1409 * exposed because of a resize. 1410 */ 1411 const Region newExposed = visibleRegion - coveredRegion; 1412 const Region oldVisibleRegion = layer->visibleRegion; 1413 const Region oldCoveredRegion = layer->coveredRegion; 1414 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1415 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1416 } 1417 dirty.subtractSelf(aboveOpaqueLayers); 1418 1419 // accumulate to the screen dirty region 1420 outDirtyRegion.orSelf(dirty); 1421 1422 // Update aboveOpaqueLayers for next (lower) layer 1423 aboveOpaqueLayers.orSelf(opaqueRegion); 1424 1425 // Store the visible region in screen space 1426 layer->setVisibleRegion(visibleRegion); 1427 layer->setCoveredRegion(coveredRegion); 1428 layer->setVisibleNonTransparentRegion( 1429 visibleRegion.subtract(transparentRegion)); 1430 } 1431 1432 outOpaqueRegion = aboveOpaqueLayers; 1433} 1434 1435void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1436 const Region& dirty) { 1437 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1438 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1439 if (hw->getLayerStack() == layerStack) { 1440 hw->dirtyRegion.orSelf(dirty); 1441 } 1442 } 1443} 1444 1445void SurfaceFlinger::handlePageFlip() 1446{ 1447 Region dirtyRegion; 1448 1449 bool visibleRegions = false; 1450 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1451 const size_t count = currentLayers.size(); 1452 for (size_t i=0 ; i<count ; i++) { 1453 const sp<Layer>& layer(currentLayers[i]); 1454 const Region dirty(layer->latchBuffer(visibleRegions)); 1455 const Layer::State& s(layer->drawingState()); 1456 invalidateLayerStack(s.layerStack, dirty); 1457 } 1458 1459 mVisibleRegionsDirty |= visibleRegions; 1460} 1461 1462void SurfaceFlinger::invalidateHwcGeometry() 1463{ 1464 mHwWorkListDirty = true; 1465} 1466 1467 1468void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1469 const Region& inDirtyRegion) 1470{ 1471 Region dirtyRegion(inDirtyRegion); 1472 1473 // compute the invalid region 1474 hw->swapRegion.orSelf(dirtyRegion); 1475 1476 uint32_t flags = hw->getFlags(); 1477 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1478 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1479 // takes a rectangle, we must make sure to update that whole 1480 // rectangle in that case 1481 dirtyRegion.set(hw->swapRegion.bounds()); 1482 } else { 1483 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1484 // We need to redraw the rectangle that will be updated 1485 // (pushed to the framebuffer). 1486 // This is needed because PARTIAL_UPDATES only takes one 1487 // rectangle instead of a region (see DisplayDevice::flip()) 1488 dirtyRegion.set(hw->swapRegion.bounds()); 1489 } else { 1490 // we need to redraw everything (the whole screen) 1491 dirtyRegion.set(hw->bounds()); 1492 hw->swapRegion = dirtyRegion; 1493 } 1494 } 1495 1496 doComposeSurfaces(hw, dirtyRegion); 1497 1498 // update the swap region and clear the dirty region 1499 hw->swapRegion.orSelf(dirtyRegion); 1500 1501 // swap buffers (presentation) 1502 hw->swapBuffers(getHwComposer()); 1503} 1504 1505void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1506{ 1507 const int32_t id = hw->getHwcDisplayId(); 1508 HWComposer& hwc(getHwComposer()); 1509 HWComposer::LayerListIterator cur = hwc.begin(id); 1510 const HWComposer::LayerListIterator end = hwc.end(id); 1511 1512 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1513 if (hasGlesComposition) { 1514 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1515 1516 // set the frame buffer 1517 glMatrixMode(GL_MODELVIEW); 1518 glLoadIdentity(); 1519 1520 // Never touch the framebuffer if we don't have any framebuffer layers 1521 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1522 if (hasHwcComposition) { 1523 // when using overlays, we assume a fully transparent framebuffer 1524 // NOTE: we could reduce how much we need to clear, for instance 1525 // remove where there are opaque FB layers. however, on some 1526 // GPUs doing a "clean slate" glClear might be more efficient. 1527 // We'll revisit later if needed. 1528 glClearColor(0, 0, 0, 0); 1529 glClear(GL_COLOR_BUFFER_BIT); 1530 } else { 1531 // we start with the whole screen area 1532 const Region bounds(hw->getBounds()); 1533 1534 // we remove the scissor part 1535 // we're left with the letterbox region 1536 // (common case is that letterbox ends-up being empty) 1537 const Region letterbox(bounds.subtract(hw->getScissor())); 1538 1539 // compute the area to clear 1540 Region region(hw->undefinedRegion.merge(letterbox)); 1541 1542 // but limit it to the dirty region 1543 region.andSelf(dirty); 1544 1545 // screen is already cleared here 1546 if (!region.isEmpty()) { 1547 // can happen with SurfaceView 1548 drawWormhole(hw, region); 1549 } 1550 } 1551 1552 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 1553 // just to be on the safe side, we don't set the 1554 // scissor on the main display. It should never be needed 1555 // anyways (though in theory it could since the API allows it). 1556 const Rect& bounds(hw->getBounds()); 1557 const Rect& scissor(hw->getScissor()); 1558 if (scissor != bounds) { 1559 // scissor doesn't match the screen's dimensions, so we 1560 // need to clear everything outside of it and enable 1561 // the GL scissor so we don't draw anything where we shouldn't 1562 const GLint height = hw->getHeight(); 1563 glScissor(scissor.left, height - scissor.bottom, 1564 scissor.getWidth(), scissor.getHeight()); 1565 // enable scissor for this frame 1566 glEnable(GL_SCISSOR_TEST); 1567 } 1568 } 1569 } 1570 1571 /* 1572 * and then, render the layers targeted at the framebuffer 1573 */ 1574 1575 const Vector< sp<Layer> >& layers(hw->getVisibleLayersSortedByZ()); 1576 const size_t count = layers.size(); 1577 const Transform& tr = hw->getTransform(); 1578 if (cur != end) { 1579 // we're using h/w composer 1580 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1581 const sp<Layer>& layer(layers[i]); 1582 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1583 if (!clip.isEmpty()) { 1584 switch (cur->getCompositionType()) { 1585 case HWC_OVERLAY: { 1586 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1587 && i 1588 && layer->isOpaque() 1589 && hasGlesComposition) { 1590 // never clear the very first layer since we're 1591 // guaranteed the FB is already cleared 1592 layer->clearWithOpenGL(hw, clip); 1593 } 1594 break; 1595 } 1596 case HWC_FRAMEBUFFER: { 1597 layer->draw(hw, clip); 1598 break; 1599 } 1600 case HWC_FRAMEBUFFER_TARGET: { 1601 // this should not happen as the iterator shouldn't 1602 // let us get there. 1603 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1604 break; 1605 } 1606 } 1607 } 1608 layer->setAcquireFence(hw, *cur); 1609 } 1610 } else { 1611 // we're not using h/w composer 1612 for (size_t i=0 ; i<count ; ++i) { 1613 const sp<Layer>& layer(layers[i]); 1614 const Region clip(dirty.intersect( 1615 tr.transform(layer->visibleRegion))); 1616 if (!clip.isEmpty()) { 1617 layer->draw(hw, clip); 1618 } 1619 } 1620 } 1621 1622 // disable scissor at the end of the frame 1623 glDisable(GL_SCISSOR_TEST); 1624} 1625 1626void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1627 const Region& region) const 1628{ 1629 glDisable(GL_TEXTURE_EXTERNAL_OES); 1630 glDisable(GL_TEXTURE_2D); 1631 glDisable(GL_BLEND); 1632 glColor4f(0,0,0,0); 1633 1634 const int32_t height = hw->getHeight(); 1635 Region::const_iterator it = region.begin(); 1636 Region::const_iterator const end = region.end(); 1637 while (it != end) { 1638 const Rect& r = *it++; 1639 GLfloat vertices[][2] = { 1640 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 1641 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 1642 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 1643 { (GLfloat) r.right, (GLfloat) (height - r.top) } 1644 }; 1645 glVertexPointer(2, GL_FLOAT, 0, vertices); 1646 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1647 } 1648} 1649 1650void SurfaceFlinger::addClientLayer(const sp<Client>& client, 1651 const sp<IBinder>& handle, 1652 const sp<IGraphicBufferProducer>& gbc, 1653 const sp<Layer>& lbc) 1654{ 1655 // attach this layer to the client 1656 client->attachLayer(handle, lbc); 1657 1658 // add this layer to the current state list 1659 Mutex::Autolock _l(mStateLock); 1660 mCurrentState.layersSortedByZ.add(lbc); 1661 mGraphicBufferProducerList.add(gbc->asBinder()); 1662} 1663 1664status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) 1665{ 1666 Mutex::Autolock _l(mStateLock); 1667 ssize_t index = mCurrentState.layersSortedByZ.remove(layer); 1668 if (index >= 0) { 1669 mLayersPendingRemoval.push(layer); 1670 mLayersRemoved = true; 1671 setTransactionFlags(eTransactionNeeded); 1672 return NO_ERROR; 1673 } 1674 return status_t(index); 1675} 1676 1677uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1678{ 1679 return android_atomic_release_load(&mTransactionFlags); 1680} 1681 1682uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1683{ 1684 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1685} 1686 1687uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1688{ 1689 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1690 if ((old & flags)==0) { // wake the server up 1691 signalTransaction(); 1692 } 1693 return old; 1694} 1695 1696void SurfaceFlinger::setTransactionState( 1697 const Vector<ComposerState>& state, 1698 const Vector<DisplayState>& displays, 1699 uint32_t flags) 1700{ 1701 ATRACE_CALL(); 1702 Mutex::Autolock _l(mStateLock); 1703 uint32_t transactionFlags = 0; 1704 1705 if (flags & eAnimation) { 1706 // For window updates that are part of an animation we must wait for 1707 // previous animation "frames" to be handled. 1708 while (mAnimTransactionPending) { 1709 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1710 if (CC_UNLIKELY(err != NO_ERROR)) { 1711 // just in case something goes wrong in SF, return to the 1712 // caller after a few seconds. 1713 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1714 "waiting for previous animation frame"); 1715 mAnimTransactionPending = false; 1716 break; 1717 } 1718 } 1719 } 1720 1721 size_t count = displays.size(); 1722 for (size_t i=0 ; i<count ; i++) { 1723 const DisplayState& s(displays[i]); 1724 transactionFlags |= setDisplayStateLocked(s); 1725 } 1726 1727 count = state.size(); 1728 for (size_t i=0 ; i<count ; i++) { 1729 const ComposerState& s(state[i]); 1730 // Here we need to check that the interface we're given is indeed 1731 // one of our own. A malicious client could give us a NULL 1732 // IInterface, or one of its own or even one of our own but a 1733 // different type. All these situations would cause us to crash. 1734 // 1735 // NOTE: it would be better to use RTTI as we could directly check 1736 // that we have a Client*. however, RTTI is disabled in Android. 1737 if (s.client != NULL) { 1738 sp<IBinder> binder = s.client->asBinder(); 1739 if (binder != NULL) { 1740 String16 desc(binder->getInterfaceDescriptor()); 1741 if (desc == ISurfaceComposerClient::descriptor) { 1742 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1743 transactionFlags |= setClientStateLocked(client, s.state); 1744 } 1745 } 1746 } 1747 } 1748 1749 if (transactionFlags) { 1750 // this triggers the transaction 1751 setTransactionFlags(transactionFlags); 1752 1753 // if this is a synchronous transaction, wait for it to take effect 1754 // before returning. 1755 if (flags & eSynchronous) { 1756 mTransactionPending = true; 1757 } 1758 if (flags & eAnimation) { 1759 mAnimTransactionPending = true; 1760 } 1761 while (mTransactionPending) { 1762 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1763 if (CC_UNLIKELY(err != NO_ERROR)) { 1764 // just in case something goes wrong in SF, return to the 1765 // called after a few seconds. 1766 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1767 mTransactionPending = false; 1768 break; 1769 } 1770 } 1771 } 1772} 1773 1774uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1775{ 1776 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1777 if (dpyIdx < 0) 1778 return 0; 1779 1780 uint32_t flags = 0; 1781 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1782 if (disp.isValid()) { 1783 const uint32_t what = s.what; 1784 if (what & DisplayState::eSurfaceChanged) { 1785 if (disp.surface->asBinder() != s.surface->asBinder()) { 1786 disp.surface = s.surface; 1787 flags |= eDisplayTransactionNeeded; 1788 } 1789 } 1790 if (what & DisplayState::eLayerStackChanged) { 1791 if (disp.layerStack != s.layerStack) { 1792 disp.layerStack = s.layerStack; 1793 flags |= eDisplayTransactionNeeded; 1794 } 1795 } 1796 if (what & DisplayState::eDisplayProjectionChanged) { 1797 if (disp.orientation != s.orientation) { 1798 disp.orientation = s.orientation; 1799 flags |= eDisplayTransactionNeeded; 1800 } 1801 if (disp.frame != s.frame) { 1802 disp.frame = s.frame; 1803 flags |= eDisplayTransactionNeeded; 1804 } 1805 if (disp.viewport != s.viewport) { 1806 disp.viewport = s.viewport; 1807 flags |= eDisplayTransactionNeeded; 1808 } 1809 } 1810 } 1811 return flags; 1812} 1813 1814uint32_t SurfaceFlinger::setClientStateLocked( 1815 const sp<Client>& client, 1816 const layer_state_t& s) 1817{ 1818 uint32_t flags = 0; 1819 sp<Layer> layer(client->getLayerUser(s.surface)); 1820 if (layer != 0) { 1821 const uint32_t what = s.what; 1822 if (what & layer_state_t::ePositionChanged) { 1823 if (layer->setPosition(s.x, s.y)) 1824 flags |= eTraversalNeeded; 1825 } 1826 if (what & layer_state_t::eLayerChanged) { 1827 // NOTE: index needs to be calculated before we update the state 1828 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1829 if (layer->setLayer(s.z)) { 1830 mCurrentState.layersSortedByZ.removeAt(idx); 1831 mCurrentState.layersSortedByZ.add(layer); 1832 // we need traversal (state changed) 1833 // AND transaction (list changed) 1834 flags |= eTransactionNeeded|eTraversalNeeded; 1835 } 1836 } 1837 if (what & layer_state_t::eSizeChanged) { 1838 if (layer->setSize(s.w, s.h)) { 1839 flags |= eTraversalNeeded; 1840 } 1841 } 1842 if (what & layer_state_t::eAlphaChanged) { 1843 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1844 flags |= eTraversalNeeded; 1845 } 1846 if (what & layer_state_t::eMatrixChanged) { 1847 if (layer->setMatrix(s.matrix)) 1848 flags |= eTraversalNeeded; 1849 } 1850 if (what & layer_state_t::eTransparentRegionChanged) { 1851 if (layer->setTransparentRegionHint(s.transparentRegion)) 1852 flags |= eTraversalNeeded; 1853 } 1854 if (what & layer_state_t::eVisibilityChanged) { 1855 if (layer->setFlags(s.flags, s.mask)) 1856 flags |= eTraversalNeeded; 1857 } 1858 if (what & layer_state_t::eCropChanged) { 1859 if (layer->setCrop(s.crop)) 1860 flags |= eTraversalNeeded; 1861 } 1862 if (what & layer_state_t::eLayerStackChanged) { 1863 // NOTE: index needs to be calculated before we update the state 1864 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1865 if (layer->setLayerStack(s.layerStack)) { 1866 mCurrentState.layersSortedByZ.removeAt(idx); 1867 mCurrentState.layersSortedByZ.add(layer); 1868 // we need traversal (state changed) 1869 // AND transaction (list changed) 1870 flags |= eTransactionNeeded|eTraversalNeeded; 1871 } 1872 } 1873 } 1874 return flags; 1875} 1876 1877status_t SurfaceFlinger::createLayer( 1878 const String8& name, 1879 const sp<Client>& client, 1880 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 1881 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp) 1882{ 1883 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1884 if (int32_t(w|h) < 0) { 1885 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1886 int(w), int(h)); 1887 return BAD_VALUE; 1888 } 1889 1890 status_t result = NO_ERROR; 1891 1892 sp<Layer> layer; 1893 1894 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1895 case ISurfaceComposerClient::eFXSurfaceNormal: 1896 result = createNormalLayer(client, 1897 name, w, h, flags, format, 1898 handle, gbp, &layer); 1899 break; 1900 case ISurfaceComposerClient::eFXSurfaceDim: 1901 result = createDimLayer(client, 1902 name, w, h, flags, 1903 handle, gbp, &layer); 1904 break; 1905 default: 1906 result = BAD_VALUE; 1907 break; 1908 } 1909 1910 if (result == NO_ERROR) { 1911 addClientLayer(client, *handle, *gbp, layer); 1912 setTransactionFlags(eTransactionNeeded); 1913 } 1914 return result; 1915} 1916 1917status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client, 1918 const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 1919 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1920{ 1921 // initialize the surfaces 1922 switch (format) { 1923 case PIXEL_FORMAT_TRANSPARENT: 1924 case PIXEL_FORMAT_TRANSLUCENT: 1925 format = PIXEL_FORMAT_RGBA_8888; 1926 break; 1927 case PIXEL_FORMAT_OPAQUE: 1928#ifdef NO_RGBX_8888 1929 format = PIXEL_FORMAT_RGB_565; 1930#else 1931 format = PIXEL_FORMAT_RGBX_8888; 1932#endif 1933 break; 1934 } 1935 1936#ifdef NO_RGBX_8888 1937 if (format == PIXEL_FORMAT_RGBX_8888) 1938 format = PIXEL_FORMAT_RGBA_8888; 1939#endif 1940 1941 *outLayer = new Layer(this, client, name, w, h, flags); 1942 status_t err = (*outLayer)->setBuffers(w, h, format, flags); 1943 if (err == NO_ERROR) { 1944 *handle = (*outLayer)->getHandle(); 1945 *gbp = (*outLayer)->getBufferQueue(); 1946 } 1947 1948 ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); 1949 return err; 1950} 1951 1952status_t SurfaceFlinger::createDimLayer(const sp<Client>& client, 1953 const String8& name, uint32_t w, uint32_t h, uint32_t flags, 1954 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1955{ 1956 *outLayer = new LayerDim(this, client, name, w, h, flags); 1957 *handle = (*outLayer)->getHandle(); 1958 *gbp = (*outLayer)->getBufferQueue(); 1959 return NO_ERROR; 1960} 1961 1962status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle) 1963{ 1964 // called by the window manager when it wants to remove a Layer 1965 status_t err = NO_ERROR; 1966 sp<Layer> l(client->getLayerUser(handle)); 1967 if (l != NULL) { 1968 err = removeLayer(l); 1969 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1970 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1971 } 1972 return err; 1973} 1974 1975status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer) 1976{ 1977 // called by ~LayerCleaner() when all references to the IBinder (handle) 1978 // are gone 1979 status_t err = NO_ERROR; 1980 sp<Layer> l(layer.promote()); 1981 if (l != NULL) { 1982 err = removeLayer(l); 1983 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1984 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1985 } 1986 return err; 1987} 1988 1989// --------------------------------------------------------------------------- 1990 1991void SurfaceFlinger::onInitializeDisplays() { 1992 // reset screen orientation and use primary layer stack 1993 Vector<ComposerState> state; 1994 Vector<DisplayState> displays; 1995 DisplayState d; 1996 d.what = DisplayState::eDisplayProjectionChanged | 1997 DisplayState::eLayerStackChanged; 1998 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 1999 d.layerStack = 0; 2000 d.orientation = DisplayState::eOrientationDefault; 2001 d.frame.makeInvalid(); 2002 d.viewport.makeInvalid(); 2003 displays.add(d); 2004 setTransactionState(state, displays, 0); 2005 onScreenAcquired(getDefaultDisplayDevice()); 2006} 2007 2008void SurfaceFlinger::initializeDisplays() { 2009 class MessageScreenInitialized : public MessageBase { 2010 SurfaceFlinger* flinger; 2011 public: 2012 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2013 virtual bool handler() { 2014 flinger->onInitializeDisplays(); 2015 return true; 2016 } 2017 }; 2018 sp<MessageBase> msg = new MessageScreenInitialized(this); 2019 postMessageAsync(msg); // we may be called from main thread, use async message 2020} 2021 2022 2023void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2024 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2025 if (hw->isScreenAcquired()) { 2026 // this is expected, e.g. when power manager wakes up during boot 2027 ALOGD(" screen was previously acquired"); 2028 return; 2029 } 2030 2031 hw->acquireScreen(); 2032 int32_t type = hw->getDisplayType(); 2033 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2034 // built-in display, tell the HWC 2035 getHwComposer().acquire(type); 2036 2037 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2038 // FIXME: eventthread only knows about the main display right now 2039 mEventThread->onScreenAcquired(); 2040 } 2041 } 2042 mVisibleRegionsDirty = true; 2043 repaintEverything(); 2044} 2045 2046void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2047 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2048 if (!hw->isScreenAcquired()) { 2049 ALOGD(" screen was previously released"); 2050 return; 2051 } 2052 2053 hw->releaseScreen(); 2054 int32_t type = hw->getDisplayType(); 2055 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2056 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2057 // FIXME: eventthread only knows about the main display right now 2058 mEventThread->onScreenReleased(); 2059 } 2060 2061 // built-in display, tell the HWC 2062 getHwComposer().release(type); 2063 } 2064 mVisibleRegionsDirty = true; 2065 // from this point on, SF will stop drawing on this display 2066} 2067 2068void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2069 class MessageScreenAcquired : public MessageBase { 2070 SurfaceFlinger& mFlinger; 2071 sp<IBinder> mDisplay; 2072 public: 2073 MessageScreenAcquired(SurfaceFlinger& flinger, 2074 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2075 virtual bool handler() { 2076 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2077 if (hw == NULL) { 2078 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2079 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2080 ALOGW("Attempt to unblank virtual display"); 2081 } else { 2082 mFlinger.onScreenAcquired(hw); 2083 } 2084 return true; 2085 } 2086 }; 2087 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2088 postMessageSync(msg); 2089} 2090 2091void SurfaceFlinger::blank(const sp<IBinder>& display) { 2092 class MessageScreenReleased : public MessageBase { 2093 SurfaceFlinger& mFlinger; 2094 sp<IBinder> mDisplay; 2095 public: 2096 MessageScreenReleased(SurfaceFlinger& flinger, 2097 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2098 virtual bool handler() { 2099 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2100 if (hw == NULL) { 2101 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2102 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2103 ALOGW("Attempt to blank virtual display"); 2104 } else { 2105 mFlinger.onScreenReleased(hw); 2106 } 2107 return true; 2108 } 2109 }; 2110 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2111 postMessageSync(msg); 2112} 2113 2114// --------------------------------------------------------------------------- 2115 2116status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2117{ 2118 const size_t SIZE = 4096; 2119 char buffer[SIZE]; 2120 String8 result; 2121 2122 if (!PermissionCache::checkCallingPermission(sDump)) { 2123 snprintf(buffer, SIZE, "Permission Denial: " 2124 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2125 IPCThreadState::self()->getCallingPid(), 2126 IPCThreadState::self()->getCallingUid()); 2127 result.append(buffer); 2128 } else { 2129 // Try to get the main lock, but don't insist if we can't 2130 // (this would indicate SF is stuck, but we want to be able to 2131 // print something in dumpsys). 2132 int retry = 3; 2133 while (mStateLock.tryLock()<0 && --retry>=0) { 2134 usleep(1000000); 2135 } 2136 const bool locked(retry >= 0); 2137 if (!locked) { 2138 snprintf(buffer, SIZE, 2139 "SurfaceFlinger appears to be unresponsive, " 2140 "dumping anyways (no locks held)\n"); 2141 result.append(buffer); 2142 } 2143 2144 bool dumpAll = true; 2145 size_t index = 0; 2146 size_t numArgs = args.size(); 2147 if (numArgs) { 2148 if ((index < numArgs) && 2149 (args[index] == String16("--list"))) { 2150 index++; 2151 listLayersLocked(args, index, result, buffer, SIZE); 2152 dumpAll = false; 2153 } 2154 2155 if ((index < numArgs) && 2156 (args[index] == String16("--latency"))) { 2157 index++; 2158 dumpStatsLocked(args, index, result, buffer, SIZE); 2159 dumpAll = false; 2160 } 2161 2162 if ((index < numArgs) && 2163 (args[index] == String16("--latency-clear"))) { 2164 index++; 2165 clearStatsLocked(args, index, result, buffer, SIZE); 2166 dumpAll = false; 2167 } 2168 } 2169 2170 if (dumpAll) { 2171 dumpAllLocked(result, buffer, SIZE); 2172 } 2173 2174 if (locked) { 2175 mStateLock.unlock(); 2176 } 2177 } 2178 write(fd, result.string(), result.size()); 2179 return NO_ERROR; 2180} 2181 2182void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2183 String8& result, char* buffer, size_t SIZE) const 2184{ 2185 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2186 const size_t count = currentLayers.size(); 2187 for (size_t i=0 ; i<count ; i++) { 2188 const sp<Layer>& layer(currentLayers[i]); 2189 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2190 result.append(buffer); 2191 } 2192} 2193 2194void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2195 String8& result, char* buffer, size_t SIZE) const 2196{ 2197 String8 name; 2198 if (index < args.size()) { 2199 name = String8(args[index]); 2200 index++; 2201 } 2202 2203 const nsecs_t period = 2204 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 2205 result.appendFormat("%lld\n", period); 2206 2207 if (name.isEmpty()) { 2208 mAnimFrameTracker.dump(result); 2209 } else { 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 if (name == layer->getName()) { 2215 layer->dumpStats(result, buffer, SIZE); 2216 } 2217 } 2218 } 2219} 2220 2221void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2222 String8& result, char* buffer, size_t SIZE) 2223{ 2224 String8 name; 2225 if (index < args.size()) { 2226 name = String8(args[index]); 2227 index++; 2228 } 2229 2230 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2231 const size_t count = currentLayers.size(); 2232 for (size_t i=0 ; i<count ; i++) { 2233 const sp<Layer>& layer(currentLayers[i]); 2234 if (name.isEmpty() || (name == layer->getName())) { 2235 layer->clearStats(); 2236 } 2237 } 2238 2239 mAnimFrameTracker.clear(); 2240} 2241 2242/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2243{ 2244 static const char* config = 2245 " [sf" 2246#ifdef NO_RGBX_8888 2247 " NO_RGBX_8888" 2248#endif 2249#ifdef HAS_CONTEXT_PRIORITY 2250 " HAS_CONTEXT_PRIORITY" 2251#endif 2252#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2253 " NEVER_DEFAULT_TO_ASYNC_MODE" 2254#endif 2255#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2256 " TARGET_DISABLE_TRIPLE_BUFFERING" 2257#endif 2258 "]"; 2259 result.append(config); 2260} 2261 2262void SurfaceFlinger::dumpAllLocked( 2263 String8& result, char* buffer, size_t SIZE) const 2264{ 2265 // figure out if we're stuck somewhere 2266 const nsecs_t now = systemTime(); 2267 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2268 const nsecs_t inTransaction(mDebugInTransaction); 2269 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2270 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2271 2272 /* 2273 * Dump library configuration. 2274 */ 2275 result.append("Build configuration:"); 2276 appendSfConfigString(result); 2277 appendUiConfigString(result); 2278 appendGuiConfigString(result); 2279 result.append("\n"); 2280 2281 /* 2282 * Dump the visible layer list 2283 */ 2284 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2285 const size_t count = currentLayers.size(); 2286 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2287 result.append(buffer); 2288 for (size_t i=0 ; i<count ; i++) { 2289 const sp<Layer>& layer(currentLayers[i]); 2290 layer->dump(result, buffer, SIZE); 2291 } 2292 2293 /* 2294 * Dump Display state 2295 */ 2296 2297 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2298 result.append(buffer); 2299 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2300 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2301 hw->dump(result, buffer, SIZE); 2302 } 2303 2304 /* 2305 * Dump SurfaceFlinger global state 2306 */ 2307 2308 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2309 result.append(buffer); 2310 2311 HWComposer& hwc(getHwComposer()); 2312 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2313 const GLExtensions& extensions(GLExtensions::getInstance()); 2314 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2315 extensions.getVendor(), 2316 extensions.getRenderer(), 2317 extensions.getVersion()); 2318 result.append(buffer); 2319 2320 snprintf(buffer, SIZE, "EGL : %s\n", 2321 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2322 result.append(buffer); 2323 2324 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2325 result.append(buffer); 2326 2327 hw->undefinedRegion.dump(result, "undefinedRegion"); 2328 snprintf(buffer, SIZE, 2329 " orientation=%d, canDraw=%d\n", 2330 hw->getOrientation(), hw->canDraw()); 2331 result.append(buffer); 2332 snprintf(buffer, SIZE, 2333 " last eglSwapBuffers() time: %f us\n" 2334 " last transaction time : %f us\n" 2335 " transaction-flags : %08x\n" 2336 " refresh-rate : %f fps\n" 2337 " x-dpi : %f\n" 2338 " y-dpi : %f\n" 2339 " EGL_NATIVE_VISUAL_ID : %d\n" 2340 " gpu_to_cpu_unsupported : %d\n" 2341 , 2342 mLastSwapBufferTime/1000.0, 2343 mLastTransactionTime/1000.0, 2344 mTransactionFlags, 2345 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2346 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2347 hwc.getDpiY(HWC_DISPLAY_PRIMARY), 2348 mEGLNativeVisualId, 2349 !mGpuToCpuSupported); 2350 result.append(buffer); 2351 2352 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2353 inSwapBuffersDuration/1000.0); 2354 result.append(buffer); 2355 2356 snprintf(buffer, SIZE, " transaction time: %f us\n", 2357 inTransactionDuration/1000.0); 2358 result.append(buffer); 2359 2360 /* 2361 * VSYNC state 2362 */ 2363 mEventThread->dump(result, buffer, SIZE); 2364 2365 /* 2366 * Dump HWComposer state 2367 */ 2368 snprintf(buffer, SIZE, "h/w composer state:\n"); 2369 result.append(buffer); 2370 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2371 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2372 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2373 result.append(buffer); 2374 hwc.dump(result, buffer, SIZE); 2375 2376 /* 2377 * Dump gralloc state 2378 */ 2379 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2380 alloc.dump(result); 2381} 2382 2383const Vector< sp<Layer> >& 2384SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { 2385 // Note: mStateLock is held here 2386 wp<IBinder> dpy; 2387 for (size_t i=0 ; i<mDisplays.size() ; i++) { 2388 if (mDisplays.valueAt(i)->getHwcDisplayId() == id) { 2389 dpy = mDisplays.keyAt(i); 2390 break; 2391 } 2392 } 2393 if (dpy == NULL) { 2394 ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); 2395 // Just use the primary display so we have something to return 2396 dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); 2397 } 2398 return getDisplayDevice(dpy)->getVisibleLayersSortedByZ(); 2399} 2400 2401bool SurfaceFlinger::startDdmConnection() 2402{ 2403 void* libddmconnection_dso = 2404 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2405 if (!libddmconnection_dso) { 2406 return false; 2407 } 2408 void (*DdmConnection_start)(const char* name); 2409 DdmConnection_start = 2410 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2411 if (!DdmConnection_start) { 2412 dlclose(libddmconnection_dso); 2413 return false; 2414 } 2415 (*DdmConnection_start)(getServiceName()); 2416 return true; 2417} 2418 2419status_t SurfaceFlinger::onTransact( 2420 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2421{ 2422 switch (code) { 2423 case CREATE_CONNECTION: 2424 case CREATE_DISPLAY: 2425 case SET_TRANSACTION_STATE: 2426 case BOOT_FINISHED: 2427 case BLANK: 2428 case UNBLANK: 2429 { 2430 // codes that require permission check 2431 IPCThreadState* ipc = IPCThreadState::self(); 2432 const int pid = ipc->getCallingPid(); 2433 const int uid = ipc->getCallingUid(); 2434 if ((uid != AID_GRAPHICS) && 2435 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2436 ALOGE("Permission Denial: " 2437 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2438 return PERMISSION_DENIED; 2439 } 2440 break; 2441 } 2442 case CAPTURE_SCREEN: 2443 { 2444 // codes that require permission check 2445 IPCThreadState* ipc = IPCThreadState::self(); 2446 const int pid = ipc->getCallingPid(); 2447 const int uid = ipc->getCallingUid(); 2448 if ((uid != AID_GRAPHICS) && 2449 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2450 ALOGE("Permission Denial: " 2451 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2452 return PERMISSION_DENIED; 2453 } 2454 break; 2455 } 2456 } 2457 2458 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2459 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2460 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2461 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2462 IPCThreadState* ipc = IPCThreadState::self(); 2463 const int pid = ipc->getCallingPid(); 2464 const int uid = ipc->getCallingUid(); 2465 ALOGE("Permission Denial: " 2466 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2467 return PERMISSION_DENIED; 2468 } 2469 int n; 2470 switch (code) { 2471 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2472 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2473 return NO_ERROR; 2474 case 1002: // SHOW_UPDATES 2475 n = data.readInt32(); 2476 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2477 invalidateHwcGeometry(); 2478 repaintEverything(); 2479 return NO_ERROR; 2480 case 1004:{ // repaint everything 2481 repaintEverything(); 2482 return NO_ERROR; 2483 } 2484 case 1005:{ // force transaction 2485 setTransactionFlags( 2486 eTransactionNeeded| 2487 eDisplayTransactionNeeded| 2488 eTraversalNeeded); 2489 return NO_ERROR; 2490 } 2491 case 1006:{ // send empty update 2492 signalRefresh(); 2493 return NO_ERROR; 2494 } 2495 case 1008: // toggle use of hw composer 2496 n = data.readInt32(); 2497 mDebugDisableHWC = n ? 1 : 0; 2498 invalidateHwcGeometry(); 2499 repaintEverything(); 2500 return NO_ERROR; 2501 case 1009: // toggle use of transform hint 2502 n = data.readInt32(); 2503 mDebugDisableTransformHint = n ? 1 : 0; 2504 invalidateHwcGeometry(); 2505 repaintEverything(); 2506 return NO_ERROR; 2507 case 1010: // interrogate. 2508 reply->writeInt32(0); 2509 reply->writeInt32(0); 2510 reply->writeInt32(mDebugRegion); 2511 reply->writeInt32(0); 2512 reply->writeInt32(mDebugDisableHWC); 2513 return NO_ERROR; 2514 case 1013: { 2515 Mutex::Autolock _l(mStateLock); 2516 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2517 reply->writeInt32(hw->getPageFlipCount()); 2518 } 2519 return NO_ERROR; 2520 } 2521 } 2522 return err; 2523} 2524 2525void SurfaceFlinger::repaintEverything() { 2526 android_atomic_or(1, &mRepaintEverything); 2527 signalTransaction(); 2528} 2529 2530// --------------------------------------------------------------------------- 2531// Capture screen into an IGraphiBufferProducer 2532// --------------------------------------------------------------------------- 2533 2534status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2535 const sp<IGraphicBufferProducer>& producer, 2536 uint32_t reqWidth, uint32_t reqHeight, 2537 uint32_t minLayerZ, uint32_t maxLayerZ, 2538 bool isCpuConsumer) { 2539 2540 if (CC_UNLIKELY(display == 0)) 2541 return BAD_VALUE; 2542 2543 if (CC_UNLIKELY(producer == 0)) 2544 return BAD_VALUE; 2545 2546 class MessageCaptureScreen : public MessageBase { 2547 SurfaceFlinger* flinger; 2548 sp<IBinder> display; 2549 sp<IGraphicBufferProducer> producer; 2550 uint32_t reqWidth, reqHeight; 2551 uint32_t minLayerZ,maxLayerZ; 2552 bool isCpuConsumer; 2553 status_t result; 2554 public: 2555 MessageCaptureScreen(SurfaceFlinger* flinger, 2556 const sp<IBinder>& display, 2557 const sp<IGraphicBufferProducer>& producer, 2558 uint32_t reqWidth, uint32_t reqHeight, 2559 uint32_t minLayerZ, uint32_t maxLayerZ, bool isCpuConsumer) 2560 : flinger(flinger), display(display), producer(producer), 2561 reqWidth(reqWidth), reqHeight(reqHeight), 2562 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2563 isCpuConsumer(isCpuConsumer), 2564 result(PERMISSION_DENIED) 2565 { 2566 } 2567 status_t getResult() const { 2568 return result; 2569 } 2570 virtual bool handler() { 2571 Mutex::Autolock _l(flinger->mStateLock); 2572 sp<const DisplayDevice> hw(flinger->getDisplayDevice(display)); 2573 2574 bool useReadPixels = false; 2575 if (isCpuConsumer) { 2576 bool formatSupportedBytBitmap = 2577 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBA_8888) || 2578 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBX_8888); 2579 if (formatSupportedBytBitmap == false) { 2580 // the pixel format we have is not compatible with 2581 // Bitmap.java, which is the likely client of this API, 2582 // so we just revert to glReadPixels() in that case. 2583 useReadPixels = true; 2584 } 2585 if (flinger->mGpuToCpuSupported == false) { 2586 // When we know the GL->CPU path works, we can call 2587 // captureScreenImplLocked() directly, instead of using the 2588 // glReadPixels() workaround. 2589 useReadPixels = true; 2590 } 2591 } 2592 2593 if (!useReadPixels) { 2594 result = flinger->captureScreenImplLocked(hw, 2595 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2596 } else { 2597 result = flinger->captureScreenImplCpuConsumerLocked(hw, 2598 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2599 } 2600 return true; 2601 } 2602 }; 2603 2604 sp<MessageBase> msg = new MessageCaptureScreen(this, 2605 display, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ, 2606 isCpuConsumer); 2607 status_t res = postMessageSync(msg); 2608 if (res == NO_ERROR) { 2609 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2610 } 2611 return res; 2612} 2613 2614status_t SurfaceFlinger::captureScreenImplLocked( 2615 const sp<const DisplayDevice>& hw, 2616 const sp<IGraphicBufferProducer>& producer, 2617 uint32_t reqWidth, uint32_t reqHeight, 2618 uint32_t minLayerZ, uint32_t maxLayerZ) 2619{ 2620 ATRACE_CALL(); 2621 2622 // get screen geometry 2623 const uint32_t hw_w = hw->getWidth(); 2624 const uint32_t hw_h = hw->getHeight(); 2625 2626 // if we have secure windows on this display, never allow the screen capture 2627 if (hw->getSecureLayerVisible()) { 2628 ALOGW("FB is protected: PERMISSION_DENIED"); 2629 return PERMISSION_DENIED; 2630 } 2631 2632 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2633 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2634 reqWidth, reqHeight, hw_w, hw_h); 2635 return BAD_VALUE; 2636 } 2637 2638 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2639 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2640 const bool filtering = reqWidth != hw_w || reqWidth != hw_h; 2641 2642 // Create a surface to render into 2643 sp<Surface> surface = new Surface(producer); 2644 ANativeWindow* const window = surface.get(); 2645 2646 // set the buffer size to what the user requested 2647 native_window_set_buffers_user_dimensions(window, reqWidth, reqHeight); 2648 2649 // and create the corresponding EGLSurface 2650 EGLSurface eglSurface = eglCreateWindowSurface( 2651 mEGLDisplay, mEGLConfig, window, NULL); 2652 if (eglSurface == EGL_NO_SURFACE) { 2653 ALOGE("captureScreenImplLocked: eglCreateWindowSurface() failed 0x%4x", 2654 eglGetError()); 2655 return BAD_VALUE; 2656 } 2657 2658 if (!eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) { 2659 ALOGE("captureScreenImplLocked: eglMakeCurrent() failed 0x%4x", 2660 eglGetError()); 2661 eglDestroySurface(mEGLDisplay, eglSurface); 2662 return BAD_VALUE; 2663 } 2664 2665 // make sure to clear all GL error flags 2666 while ( glGetError() != GL_NO_ERROR ) ; 2667 2668 // set-up our viewport 2669 glViewport(0, 0, reqWidth, reqHeight); 2670 glMatrixMode(GL_PROJECTION); 2671 glLoadIdentity(); 2672 glOrthof(0, hw_w, 0, hw_h, 0, 1); 2673 glMatrixMode(GL_MODELVIEW); 2674 glLoadIdentity(); 2675 2676 // redraw the screen entirely... 2677 glDisable(GL_TEXTURE_EXTERNAL_OES); 2678 glDisable(GL_TEXTURE_2D); 2679 glClearColor(0,0,0,1); 2680 glClear(GL_COLOR_BUFFER_BIT); 2681 2682 const LayerVector& layers( mDrawingState.layersSortedByZ ); 2683 const size_t count = layers.size(); 2684 for (size_t i=0 ; i<count ; ++i) { 2685 const sp<Layer>& layer(layers[i]); 2686 const Layer::State& state(layer->drawingState()); 2687 if (state.layerStack == hw->getLayerStack()) { 2688 if (state.z >= minLayerZ && state.z <= maxLayerZ) { 2689 if (layer->isVisible()) { 2690 if (filtering) layer->setFiltering(true); 2691 layer->draw(hw); 2692 if (filtering) layer->setFiltering(false); 2693 } 2694 } 2695 } 2696 } 2697 2698 // compositionComplete is needed for older driver 2699 hw->compositionComplete(); 2700 2701 // and finishing things up... 2702 if (eglSwapBuffers(mEGLDisplay, eglSurface) != EGL_TRUE) { 2703 ALOGE("captureScreenImplLocked: eglSwapBuffers() failed 0x%4x", 2704 eglGetError()); 2705 eglDestroySurface(mEGLDisplay, eglSurface); 2706 return BAD_VALUE; 2707 } 2708 2709 eglDestroySurface(mEGLDisplay, eglSurface); 2710 2711 return NO_ERROR; 2712} 2713 2714 2715status_t SurfaceFlinger::captureScreenImplCpuConsumerLocked( 2716 const sp<const DisplayDevice>& hw, 2717 const sp<IGraphicBufferProducer>& producer, 2718 uint32_t reqWidth, uint32_t reqHeight, 2719 uint32_t minLayerZ, uint32_t maxLayerZ) 2720{ 2721 ATRACE_CALL(); 2722 2723 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2724 return INVALID_OPERATION; 2725 } 2726 2727 // create the texture that will receive the screenshot, later we'll 2728 // attach a FBO to it so we can call glReadPixels(). 2729 GLuint tname; 2730 glGenTextures(1, &tname); 2731 glBindTexture(GL_TEXTURE_2D, tname); 2732 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2733 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2734 2735 // the GLConsumer will provide the BufferQueue 2736 sp<GLConsumer> consumer = new GLConsumer(tname, true, GL_TEXTURE_2D); 2737 consumer->getBufferQueue()->setDefaultBufferFormat(HAL_PIXEL_FORMAT_RGBA_8888); 2738 2739 // call the new screenshot taking code, passing a BufferQueue to it 2740 status_t result = captureScreenImplLocked(hw, 2741 consumer->getBufferQueue(), reqWidth, reqHeight, minLayerZ, maxLayerZ); 2742 2743 if (result == NO_ERROR) { 2744 result = consumer->updateTexImage(); 2745 if (result == NO_ERROR) { 2746 // create a FBO 2747 GLuint name; 2748 glGenFramebuffersOES(1, &name); 2749 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2750 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2751 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2752 2753 reqWidth = consumer->getCurrentBuffer()->getWidth(); 2754 reqHeight = consumer->getCurrentBuffer()->getHeight(); 2755 2756 { 2757 // in this block we render the screenshot into the 2758 // CpuConsumer using glReadPixels from our GLConsumer, 2759 // Some older drivers don't support the GL->CPU path so 2760 // have to wrap it with a CPU->CPU path, which is what 2761 // glReadPixels essentially is 2762 2763 sp<Surface> sur = new Surface(producer); 2764 ANativeWindow* window = sur.get(); 2765 ANativeWindowBuffer* buffer; 2766 void* vaddr; 2767 2768 if (native_window_api_connect(window, 2769 NATIVE_WINDOW_API_CPU) == NO_ERROR) { 2770 int err = 0; 2771 err = native_window_set_buffers_dimensions(window, 2772 reqWidth, reqHeight); 2773 err |= native_window_set_buffers_format(window, 2774 HAL_PIXEL_FORMAT_RGBA_8888); 2775 err |= native_window_set_usage(window, 2776 GRALLOC_USAGE_SW_READ_OFTEN | 2777 GRALLOC_USAGE_SW_WRITE_OFTEN); 2778 2779 if (err == NO_ERROR) { 2780 if (native_window_dequeue_buffer_and_wait(window, 2781 &buffer) == NO_ERROR) { 2782 sp<GraphicBuffer> buf = 2783 static_cast<GraphicBuffer*>(buffer); 2784 if (buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, 2785 &vaddr) == NO_ERROR) { 2786 if (buffer->stride != int(reqWidth)) { 2787 // we're unlucky here, glReadPixels is 2788 // not able to deal with a stride not 2789 // equal to the width. 2790 uint32_t* tmp = new uint32_t[reqWidth*reqHeight]; 2791 if (tmp != NULL) { 2792 glReadPixels(0, 0, reqWidth, reqHeight, 2793 GL_RGBA, GL_UNSIGNED_BYTE, tmp); 2794 for (size_t y=0 ; y<reqHeight ; y++) { 2795 memcpy((uint32_t*)vaddr + y*buffer->stride, 2796 tmp + y*reqWidth, reqWidth*4); 2797 } 2798 delete [] tmp; 2799 } 2800 } else { 2801 glReadPixels(0, 0, reqWidth, reqHeight, 2802 GL_RGBA, GL_UNSIGNED_BYTE, vaddr); 2803 } 2804 buf->unlock(); 2805 } 2806 window->queueBuffer(window, buffer, -1); 2807 } 2808 } 2809 native_window_api_disconnect(window, NATIVE_WINDOW_API_CPU); 2810 } 2811 } 2812 2813 // back to main framebuffer 2814 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2815 glDeleteFramebuffersOES(1, &name); 2816 } 2817 } 2818 2819 glDeleteTextures(1, &tname); 2820 2821 DisplayDevice::makeCurrent(mEGLDisplay, 2822 getDefaultDisplayDevice(), mEGLContext); 2823 2824 return result; 2825} 2826 2827// --------------------------------------------------------------------------- 2828 2829SurfaceFlinger::LayerVector::LayerVector() { 2830} 2831 2832SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2833 : SortedVector<sp<Layer> >(rhs) { 2834} 2835 2836int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2837 const void* rhs) const 2838{ 2839 // sort layers per layer-stack, then by z-order and finally by sequence 2840 const sp<Layer>& l(*reinterpret_cast<const sp<Layer>*>(lhs)); 2841 const sp<Layer>& r(*reinterpret_cast<const sp<Layer>*>(rhs)); 2842 2843 uint32_t ls = l->currentState().layerStack; 2844 uint32_t rs = r->currentState().layerStack; 2845 if (ls != rs) 2846 return ls - rs; 2847 2848 uint32_t lz = l->currentState().z; 2849 uint32_t rz = r->currentState().z; 2850 if (lz != rz) 2851 return lz - rz; 2852 2853 return l->sequence - r->sequence; 2854} 2855 2856// --------------------------------------------------------------------------- 2857 2858SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2859 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2860} 2861 2862SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2863 : type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) { 2864 viewport.makeInvalid(); 2865 frame.makeInvalid(); 2866} 2867 2868// --------------------------------------------------------------------------- 2869 2870}; // namespace android 2871