SurfaceFlinger.cpp revision ffe1f19ca9707f84cb9fdb06209bf36cd8c2ef0a
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <stdint.h> 20#include <sys/types.h> 21#include <errno.h> 22#include <math.h> 23#include <dlfcn.h> 24 25#include <EGL/egl.h> 26#include <GLES/gl.h> 27 28#include <cutils/log.h> 29#include <cutils/properties.h> 30 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryHeapBase.h> 34#include <binder/PermissionCache.h> 35 36#include <ui/DisplayInfo.h> 37 38#include <gui/BitTube.h> 39#include <gui/BufferQueue.h> 40#include <gui/GuiConfig.h> 41#include <gui/IDisplayEventConnection.h> 42#include <gui/Surface.h> 43#include <gui/GraphicBufferAlloc.h> 44 45#include <ui/GraphicBufferAllocator.h> 46#include <ui/PixelFormat.h> 47#include <ui/UiConfig.h> 48 49#include <utils/misc.h> 50#include <utils/String8.h> 51#include <utils/String16.h> 52#include <utils/StopWatch.h> 53#include <utils/Trace.h> 54 55#include <private/android_filesystem_config.h> 56 57#include "clz.h" 58#include "DdmConnection.h" 59#include "DisplayDevice.h" 60#include "Client.h" 61#include "EventThread.h" 62#include "GLExtensions.h" 63#include "Layer.h" 64#include "LayerDim.h" 65#include "SurfaceFlinger.h" 66 67#include "DisplayHardware/FramebufferSurface.h" 68#include "DisplayHardware/HWComposer.h" 69#include "DisplayHardware/VirtualDisplaySurface.h" 70 71 72#define EGL_VERSION_HW_ANDROID 0x3143 73 74#define DISPLAY_COUNT 1 75 76namespace android { 77// --------------------------------------------------------------------------- 78 79const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 80const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 81const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 82const String16 sDump("android.permission.DUMP"); 83 84// --------------------------------------------------------------------------- 85 86SurfaceFlinger::SurfaceFlinger() 87 : BnSurfaceComposer(), Thread(false), 88 mTransactionFlags(0), 89 mTransactionPending(false), 90 mAnimTransactionPending(false), 91 mLayersRemoved(false), 92 mRepaintEverything(0), 93 mBootTime(systemTime()), 94 mVisibleRegionsDirty(false), 95 mHwWorkListDirty(false), 96 mAnimCompositionPending(false), 97 mDebugRegion(0), 98 mDebugDDMS(0), 99 mDebugDisableHWC(0), 100 mDebugDisableTransformHint(0), 101 mDebugInSwapBuffers(0), 102 mLastSwapBufferTime(0), 103 mDebugInTransaction(0), 104 mLastTransactionTime(0), 105 mBootFinished(false) 106{ 107 ALOGI("SurfaceFlinger is starting"); 108 109 // debugging stuff... 110 char value[PROPERTY_VALUE_MAX]; 111 112 property_get("ro.bq.gpu_to_cpu_unsupported", value, "0"); 113 mGpuToCpuSupported = !atoi(value); 114 115 property_get("debug.sf.showupdates", value, "0"); 116 mDebugRegion = atoi(value); 117 118 property_get("debug.sf.ddms", value, "0"); 119 mDebugDDMS = atoi(value); 120 if (mDebugDDMS) { 121 if (!startDdmConnection()) { 122 // start failed, and DDMS debugging not enabled 123 mDebugDDMS = 0; 124 } 125 } 126 ALOGI_IF(mDebugRegion, "showupdates enabled"); 127 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 128} 129 130void SurfaceFlinger::onFirstRef() 131{ 132 mEventQueue.init(this); 133 134 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 135 136 // Wait for the main thread to be done with its initialization 137 mReadyToRunBarrier.wait(); 138} 139 140 141SurfaceFlinger::~SurfaceFlinger() 142{ 143 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 144 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 145 eglTerminate(display); 146} 147 148void SurfaceFlinger::binderDied(const wp<IBinder>& who) 149{ 150 // the window manager died on us. prepare its eulogy. 151 152 // restore initial conditions (default device unblank, etc) 153 initializeDisplays(); 154 155 // restart the boot-animation 156 startBootAnim(); 157} 158 159sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 160{ 161 sp<ISurfaceComposerClient> bclient; 162 sp<Client> client(new Client(this)); 163 status_t err = client->initCheck(); 164 if (err == NO_ERROR) { 165 bclient = client; 166 } 167 return bclient; 168} 169 170sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 171 bool secure) 172{ 173 class DisplayToken : public BBinder { 174 sp<SurfaceFlinger> flinger; 175 virtual ~DisplayToken() { 176 // no more references, this display must be terminated 177 Mutex::Autolock _l(flinger->mStateLock); 178 flinger->mCurrentState.displays.removeItem(this); 179 flinger->setTransactionFlags(eDisplayTransactionNeeded); 180 } 181 public: 182 DisplayToken(const sp<SurfaceFlinger>& flinger) 183 : flinger(flinger) { 184 } 185 }; 186 187 sp<BBinder> token = new DisplayToken(this); 188 189 Mutex::Autolock _l(mStateLock); 190 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 191 info.displayName = displayName; 192 info.isSecure = secure; 193 mCurrentState.displays.add(token, info); 194 195 return token; 196} 197 198void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { 199 ALOGW_IF(mBuiltinDisplays[type], 200 "Overwriting display token for display type %d", type); 201 mBuiltinDisplays[type] = new BBinder(); 202 DisplayDeviceState info(type); 203 // All non-virtual displays are currently considered secure. 204 info.isSecure = true; 205 mCurrentState.displays.add(mBuiltinDisplays[type], info); 206} 207 208sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 209 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 210 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 211 return NULL; 212 } 213 return mBuiltinDisplays[id]; 214} 215 216sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 217{ 218 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 219 return gba; 220} 221 222void SurfaceFlinger::bootFinished() 223{ 224 const nsecs_t now = systemTime(); 225 const nsecs_t duration = now - mBootTime; 226 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 227 mBootFinished = true; 228 229 // wait patiently for the window manager death 230 const String16 name("window"); 231 sp<IBinder> window(defaultServiceManager()->getService(name)); 232 if (window != 0) { 233 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 234 } 235 236 // stop boot animation 237 // formerly we would just kill the process, but we now ask it to exit so it 238 // can choose where to stop the animation. 239 property_set("service.bootanim.exit", "1"); 240} 241 242void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 243 class MessageDestroyGLTexture : public MessageBase { 244 GLuint texture; 245 public: 246 MessageDestroyGLTexture(GLuint texture) 247 : texture(texture) { 248 } 249 virtual bool handler() { 250 glDeleteTextures(1, &texture); 251 return true; 252 } 253 }; 254 postMessageAsync(new MessageDestroyGLTexture(texture)); 255} 256 257status_t SurfaceFlinger::selectConfigForAttribute( 258 EGLDisplay dpy, 259 EGLint const* attrs, 260 EGLint attribute, EGLint wanted, 261 EGLConfig* outConfig) 262{ 263 EGLConfig config = NULL; 264 EGLint numConfigs = -1, n=0; 265 eglGetConfigs(dpy, NULL, 0, &numConfigs); 266 EGLConfig* const configs = new EGLConfig[numConfigs]; 267 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 268 269 if (n) { 270 if (attribute != EGL_NONE) { 271 for (int i=0 ; i<n ; i++) { 272 EGLint value = 0; 273 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 274 if (wanted == value) { 275 *outConfig = configs[i]; 276 delete [] configs; 277 return NO_ERROR; 278 } 279 } 280 } else { 281 // just pick the first one 282 *outConfig = configs[0]; 283 delete [] configs; 284 return NO_ERROR; 285 } 286 } 287 delete [] configs; 288 return NAME_NOT_FOUND; 289} 290 291class EGLAttributeVector { 292 struct Attribute; 293 class Adder; 294 friend class Adder; 295 KeyedVector<Attribute, EGLint> mList; 296 struct Attribute { 297 Attribute() {}; 298 Attribute(EGLint v) : v(v) { } 299 EGLint v; 300 bool operator < (const Attribute& other) const { 301 // this places EGL_NONE at the end 302 EGLint lhs(v); 303 EGLint rhs(other.v); 304 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 305 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 306 return lhs < rhs; 307 } 308 }; 309 class Adder { 310 friend class EGLAttributeVector; 311 EGLAttributeVector& v; 312 EGLint attribute; 313 Adder(EGLAttributeVector& v, EGLint attribute) 314 : v(v), attribute(attribute) { 315 } 316 public: 317 void operator = (EGLint value) { 318 if (attribute != EGL_NONE) { 319 v.mList.add(attribute, value); 320 } 321 } 322 operator EGLint () const { return v.mList[attribute]; } 323 }; 324public: 325 EGLAttributeVector() { 326 mList.add(EGL_NONE, EGL_NONE); 327 } 328 void remove(EGLint attribute) { 329 if (attribute != EGL_NONE) { 330 mList.removeItem(attribute); 331 } 332 } 333 Adder operator [] (EGLint attribute) { 334 return Adder(*this, attribute); 335 } 336 EGLint operator [] (EGLint attribute) const { 337 return mList[attribute]; 338 } 339 // cast-operator to (EGLint const*) 340 operator EGLint const* () const { return &mList.keyAt(0).v; } 341}; 342 343EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 344 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 345 // it is to be used with WIFI displays 346 EGLConfig config; 347 EGLint dummy; 348 status_t err; 349 350 EGLAttributeVector attribs; 351 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 352 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 353 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 354 attribs[EGL_RED_SIZE] = 8; 355 attribs[EGL_GREEN_SIZE] = 8; 356 attribs[EGL_BLUE_SIZE] = 8; 357 358 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 359 if (!err) 360 goto success; 361 362 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 363 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 364 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 365 err = selectConfigForAttribute(display, attribs, 366 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 367 if (!err) 368 goto success; 369 370 // maybe we failed because of EGL_RECORDABLE_ANDROID 371 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 372 attribs.remove(EGL_RECORDABLE_ANDROID); 373 err = selectConfigForAttribute(display, attribs, 374 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 375 if (!err) 376 goto success; 377 378 // allow less than 24-bit color; the non-gpu-accelerated emulator only 379 // supports 16-bit color 380 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 381 attribs.remove(EGL_RED_SIZE); 382 attribs.remove(EGL_GREEN_SIZE); 383 attribs.remove(EGL_BLUE_SIZE); 384 err = selectConfigForAttribute(display, attribs, 385 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 386 if (!err) 387 goto success; 388 389 // this EGL is too lame for Android 390 ALOGE("no suitable EGLConfig found, giving up"); 391 392 return 0; 393 394success: 395 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 396 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 397 return config; 398} 399 400EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 401 // Also create our EGLContext 402 EGLint contextAttributes[] = { 403#ifdef EGL_IMG_context_priority 404#ifdef HAS_CONTEXT_PRIORITY 405#warning "using EGL_IMG_context_priority" 406 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 407#endif 408#endif 409 EGL_NONE, EGL_NONE 410 }; 411 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 412 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 413 return ctxt; 414} 415 416void SurfaceFlinger::initializeGL(EGLDisplay display) { 417 GLExtensions& extensions(GLExtensions::getInstance()); 418 extensions.initWithGLStrings( 419 glGetString(GL_VENDOR), 420 glGetString(GL_RENDERER), 421 glGetString(GL_VERSION), 422 glGetString(GL_EXTENSIONS), 423 eglQueryString(display, EGL_VENDOR), 424 eglQueryString(display, EGL_VERSION), 425 eglQueryString(display, EGL_EXTENSIONS)); 426 427 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 428 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 429 430 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 431 glPixelStorei(GL_PACK_ALIGNMENT, 4); 432 glEnableClientState(GL_VERTEX_ARRAY); 433 glShadeModel(GL_FLAT); 434 glDisable(GL_DITHER); 435 glDisable(GL_CULL_FACE); 436 437 struct pack565 { 438 inline uint16_t operator() (int r, int g, int b) const { 439 return (r<<11)|(g<<5)|b; 440 } 441 } pack565; 442 443 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 444 glGenTextures(1, &mProtectedTexName); 445 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 446 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 447 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 448 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 449 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 450 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 451 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 452 453 // print some debugging info 454 EGLint r,g,b,a; 455 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 456 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 457 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 458 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 459 ALOGI("EGL informations:"); 460 ALOGI("vendor : %s", extensions.getEglVendor()); 461 ALOGI("version : %s", extensions.getEglVersion()); 462 ALOGI("extensions: %s", extensions.getEglExtension()); 463 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 464 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 465 ALOGI("OpenGL ES informations:"); 466 ALOGI("vendor : %s", extensions.getVendor()); 467 ALOGI("renderer : %s", extensions.getRenderer()); 468 ALOGI("version : %s", extensions.getVersion()); 469 ALOGI("extensions: %s", extensions.getExtension()); 470 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 471 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 472} 473 474status_t SurfaceFlinger::readyToRun() 475{ 476 ALOGI( "SurfaceFlinger's main thread ready to run. " 477 "Initializing graphics H/W..."); 478 479 Mutex::Autolock _l(mStateLock); 480 481 // initialize EGL for the default display 482 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 483 eglInitialize(mEGLDisplay, NULL, NULL); 484 485 // Initialize the H/W composer object. There may or may not be an 486 // actual hardware composer underneath. 487 mHwc = new HWComposer(this, 488 *static_cast<HWComposer::EventHandler *>(this)); 489 490 // initialize the config and context 491 EGLint format = mHwc->getVisualID(); 492 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 493 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 494 495 // figure out which format we got 496 eglGetConfigAttrib(mEGLDisplay, mEGLConfig, 497 EGL_NATIVE_VISUAL_ID, &mEGLNativeVisualId); 498 499 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 500 "couldn't create EGLContext"); 501 502 // initialize our non-virtual displays 503 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 504 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 505 // set-up the displays that are already connected 506 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 507 // All non-virtual displays are currently considered secure. 508 bool isSecure = true; 509 createBuiltinDisplayLocked(type); 510 wp<IBinder> token = mBuiltinDisplays[i]; 511 512 sp<DisplayDevice> hw = new DisplayDevice(this, 513 type, allocateHwcDisplayId(type), isSecure, token, 514 new FramebufferSurface(*mHwc, i), 515 mEGLConfig); 516 if (i > DisplayDevice::DISPLAY_PRIMARY) { 517 // FIXME: currently we don't get blank/unblank requests 518 // for displays other than the main display, so we always 519 // assume a connected display is unblanked. 520 ALOGD("marking display %d as acquired/unblanked", i); 521 hw->acquireScreen(); 522 } 523 mDisplays.add(token, hw); 524 } 525 } 526 527 // we need a GL context current in a few places, when initializing 528 // OpenGL ES (see below), or creating a layer, 529 // or when a texture is (asynchronously) destroyed, and for that 530 // we need a valid surface, so it's convenient to use the main display 531 // for that. 532 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 533 534 // initialize OpenGL ES 535 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 536 initializeGL(mEGLDisplay); 537 538 // start the EventThread 539 mEventThread = new EventThread(this); 540 mEventQueue.setEventThread(mEventThread); 541 542 // initialize our drawing state 543 mDrawingState = mCurrentState; 544 545 546 // We're now ready to accept clients... 547 mReadyToRunBarrier.open(); 548 549 // set initial conditions (e.g. unblank default device) 550 initializeDisplays(); 551 552 // start boot animation 553 startBootAnim(); 554 555 return NO_ERROR; 556} 557 558int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 559 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 560 type : mHwc->allocateDisplayId(); 561} 562 563void SurfaceFlinger::startBootAnim() { 564 // start boot animation 565 property_set("service.bootanim.exit", "0"); 566 property_set("ctl.start", "bootanim"); 567} 568 569uint32_t SurfaceFlinger::getMaxTextureSize() const { 570 return mMaxTextureSize; 571} 572 573uint32_t SurfaceFlinger::getMaxViewportDims() const { 574 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 575 mMaxViewportDims[0] : mMaxViewportDims[1]; 576} 577 578// ---------------------------------------------------------------------------- 579 580bool SurfaceFlinger::authenticateSurfaceTexture( 581 const sp<IGraphicBufferProducer>& bufferProducer) const { 582 Mutex::Autolock _l(mStateLock); 583 sp<IBinder> surfaceTextureBinder(bufferProducer->asBinder()); 584 return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0; 585} 586 587status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 588 int32_t type = NAME_NOT_FOUND; 589 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 590 if (display == mBuiltinDisplays[i]) { 591 type = i; 592 break; 593 } 594 } 595 596 if (type < 0) { 597 return type; 598 } 599 600 const HWComposer& hwc(getHwComposer()); 601 float xdpi = hwc.getDpiX(type); 602 float ydpi = hwc.getDpiY(type); 603 604 // TODO: Not sure if display density should handled by SF any longer 605 class Density { 606 static int getDensityFromProperty(char const* propName) { 607 char property[PROPERTY_VALUE_MAX]; 608 int density = 0; 609 if (property_get(propName, property, NULL) > 0) { 610 density = atoi(property); 611 } 612 return density; 613 } 614 public: 615 static int getEmuDensity() { 616 return getDensityFromProperty("qemu.sf.lcd_density"); } 617 static int getBuildDensity() { 618 return getDensityFromProperty("ro.sf.lcd_density"); } 619 }; 620 621 if (type == DisplayDevice::DISPLAY_PRIMARY) { 622 // The density of the device is provided by a build property 623 float density = Density::getBuildDensity() / 160.0f; 624 if (density == 0) { 625 // the build doesn't provide a density -- this is wrong! 626 // use xdpi instead 627 ALOGE("ro.sf.lcd_density must be defined as a build property"); 628 density = xdpi / 160.0f; 629 } 630 if (Density::getEmuDensity()) { 631 // if "qemu.sf.lcd_density" is specified, it overrides everything 632 xdpi = ydpi = density = Density::getEmuDensity(); 633 density /= 160.0f; 634 } 635 info->density = density; 636 637 // TODO: this needs to go away (currently needed only by webkit) 638 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 639 info->orientation = hw->getOrientation(); 640 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 641 } else { 642 // TODO: where should this value come from? 643 static const int TV_DENSITY = 213; 644 info->density = TV_DENSITY / 160.0f; 645 info->orientation = 0; 646 } 647 648 info->w = hwc.getWidth(type); 649 info->h = hwc.getHeight(type); 650 info->xdpi = xdpi; 651 info->ydpi = ydpi; 652 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 653 654 // All non-virtual displays are currently considered secure. 655 info->secure = true; 656 657 return NO_ERROR; 658} 659 660// ---------------------------------------------------------------------------- 661 662sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 663 return mEventThread->createEventConnection(); 664} 665 666// ---------------------------------------------------------------------------- 667 668void SurfaceFlinger::waitForEvent() { 669 mEventQueue.waitMessage(); 670} 671 672void SurfaceFlinger::signalTransaction() { 673 mEventQueue.invalidate(); 674} 675 676void SurfaceFlinger::signalLayerUpdate() { 677 mEventQueue.invalidate(); 678} 679 680void SurfaceFlinger::signalRefresh() { 681 mEventQueue.refresh(); 682} 683 684status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 685 nsecs_t reltime, uint32_t flags) { 686 return mEventQueue.postMessage(msg, reltime); 687} 688 689status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 690 nsecs_t reltime, uint32_t flags) { 691 status_t res = mEventQueue.postMessage(msg, reltime); 692 if (res == NO_ERROR) { 693 msg->wait(); 694 } 695 return res; 696} 697 698bool SurfaceFlinger::threadLoop() { 699 waitForEvent(); 700 return true; 701} 702 703void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 704 if (mEventThread == NULL) { 705 // This is a temporary workaround for b/7145521. A non-null pointer 706 // does not mean EventThread has finished initializing, so this 707 // is not a correct fix. 708 ALOGW("WARNING: EventThread not started, ignoring vsync"); 709 return; 710 } 711 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 712 // we should only receive DisplayDevice::DisplayType from the vsync callback 713 mEventThread->onVSyncReceived(type, timestamp); 714 } 715} 716 717void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 718 if (mEventThread == NULL) { 719 // This is a temporary workaround for b/7145521. A non-null pointer 720 // does not mean EventThread has finished initializing, so this 721 // is not a correct fix. 722 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 723 return; 724 } 725 726 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 727 Mutex::Autolock _l(mStateLock); 728 if (connected) { 729 createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); 730 } else { 731 mCurrentState.displays.removeItem(mBuiltinDisplays[type]); 732 mBuiltinDisplays[type].clear(); 733 } 734 setTransactionFlags(eDisplayTransactionNeeded); 735 736 // Defer EventThread notification until SF has updated mDisplays. 737 } 738} 739 740void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 741 getHwComposer().eventControl(disp, event, enabled); 742} 743 744void SurfaceFlinger::onMessageReceived(int32_t what) { 745 ATRACE_CALL(); 746 switch (what) { 747 case MessageQueue::INVALIDATE: 748 handleMessageTransaction(); 749 handleMessageInvalidate(); 750 signalRefresh(); 751 break; 752 case MessageQueue::REFRESH: 753 handleMessageRefresh(); 754 break; 755 } 756} 757 758void SurfaceFlinger::handleMessageTransaction() { 759 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 760 if (transactionFlags) { 761 handleTransaction(transactionFlags); 762 } 763} 764 765void SurfaceFlinger::handleMessageInvalidate() { 766 ATRACE_CALL(); 767 handlePageFlip(); 768} 769 770void SurfaceFlinger::handleMessageRefresh() { 771 ATRACE_CALL(); 772 preComposition(); 773 rebuildLayerStacks(); 774 setUpHWComposer(); 775 doDebugFlashRegions(); 776 doComposition(); 777 postComposition(); 778} 779 780void SurfaceFlinger::doDebugFlashRegions() 781{ 782 // is debugging enabled 783 if (CC_LIKELY(!mDebugRegion)) 784 return; 785 786 const bool repaintEverything = mRepaintEverything; 787 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 788 const sp<DisplayDevice>& hw(mDisplays[dpy]); 789 if (hw->canDraw()) { 790 // transform the dirty region into this screen's coordinate space 791 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 792 if (!dirtyRegion.isEmpty()) { 793 // redraw the whole screen 794 doComposeSurfaces(hw, Region(hw->bounds())); 795 796 // and draw the dirty region 797 glDisable(GL_TEXTURE_EXTERNAL_OES); 798 glDisable(GL_TEXTURE_2D); 799 glDisable(GL_BLEND); 800 glColor4f(1, 0, 1, 1); 801 const int32_t height = hw->getHeight(); 802 Region::const_iterator it = dirtyRegion.begin(); 803 Region::const_iterator const end = dirtyRegion.end(); 804 while (it != end) { 805 const Rect& r = *it++; 806 GLfloat vertices[][2] = { 807 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 808 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 809 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 810 { (GLfloat) r.right, (GLfloat) (height - r.top) } 811 }; 812 glVertexPointer(2, GL_FLOAT, 0, vertices); 813 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 814 } 815 hw->compositionComplete(); 816 hw->swapBuffers(getHwComposer()); 817 } 818 } 819 } 820 821 postFramebuffer(); 822 823 if (mDebugRegion > 1) { 824 usleep(mDebugRegion * 1000); 825 } 826 827 HWComposer& hwc(getHwComposer()); 828 if (hwc.initCheck() == NO_ERROR) { 829 status_t err = hwc.prepare(); 830 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 831 } 832} 833 834void SurfaceFlinger::preComposition() 835{ 836 bool needExtraInvalidate = false; 837 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 838 const size_t count = currentLayers.size(); 839 for (size_t i=0 ; i<count ; i++) { 840 if (currentLayers[i]->onPreComposition()) { 841 needExtraInvalidate = true; 842 } 843 } 844 if (needExtraInvalidate) { 845 signalLayerUpdate(); 846 } 847} 848 849void SurfaceFlinger::postComposition() 850{ 851 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 852 const size_t count = currentLayers.size(); 853 for (size_t i=0 ; i<count ; i++) { 854 currentLayers[i]->onPostComposition(); 855 } 856 857 if (mAnimCompositionPending) { 858 mAnimCompositionPending = false; 859 860 const HWComposer& hwc = getHwComposer(); 861 sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); 862 if (presentFence->isValid()) { 863 mAnimFrameTracker.setActualPresentFence(presentFence); 864 } else { 865 // The HWC doesn't support present fences, so use the refresh 866 // timestamp instead. 867 nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); 868 mAnimFrameTracker.setActualPresentTime(presentTime); 869 } 870 mAnimFrameTracker.advanceFrame(); 871 } 872} 873 874void SurfaceFlinger::rebuildLayerStacks() { 875 // rebuild the visible layer list per screen 876 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 877 ATRACE_CALL(); 878 mVisibleRegionsDirty = false; 879 invalidateHwcGeometry(); 880 881 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 882 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 883 Region opaqueRegion; 884 Region dirtyRegion; 885 Vector< sp<Layer> > layersSortedByZ; 886 const sp<DisplayDevice>& hw(mDisplays[dpy]); 887 const Transform& tr(hw->getTransform()); 888 const Rect bounds(hw->getBounds()); 889 if (hw->canDraw()) { 890 SurfaceFlinger::computeVisibleRegions(currentLayers, 891 hw->getLayerStack(), dirtyRegion, opaqueRegion); 892 893 const size_t count = currentLayers.size(); 894 for (size_t i=0 ; i<count ; i++) { 895 const sp<Layer>& layer(currentLayers[i]); 896 const Layer::State& s(layer->drawingState()); 897 if (s.layerStack == hw->getLayerStack()) { 898 Region drawRegion(tr.transform( 899 layer->visibleNonTransparentRegion)); 900 drawRegion.andSelf(bounds); 901 if (!drawRegion.isEmpty()) { 902 layersSortedByZ.add(layer); 903 } 904 } 905 } 906 } 907 hw->setVisibleLayersSortedByZ(layersSortedByZ); 908 hw->undefinedRegion.set(bounds); 909 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 910 hw->dirtyRegion.orSelf(dirtyRegion); 911 } 912 } 913} 914 915void SurfaceFlinger::setUpHWComposer() { 916 HWComposer& hwc(getHwComposer()); 917 if (hwc.initCheck() == NO_ERROR) { 918 // build the h/w work list 919 if (CC_UNLIKELY(mHwWorkListDirty)) { 920 mHwWorkListDirty = false; 921 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 922 sp<const DisplayDevice> hw(mDisplays[dpy]); 923 const int32_t id = hw->getHwcDisplayId(); 924 if (id >= 0) { 925 const Vector< sp<Layer> >& currentLayers( 926 hw->getVisibleLayersSortedByZ()); 927 const size_t count = currentLayers.size(); 928 if (hwc.createWorkList(id, count) == NO_ERROR) { 929 HWComposer::LayerListIterator cur = hwc.begin(id); 930 const HWComposer::LayerListIterator end = hwc.end(id); 931 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 932 const sp<Layer>& layer(currentLayers[i]); 933 layer->setGeometry(hw, *cur); 934 if (mDebugDisableHWC || mDebugRegion) { 935 cur->setSkip(true); 936 } 937 } 938 } 939 } 940 } 941 } 942 943 // set the per-frame data 944 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 945 sp<const DisplayDevice> hw(mDisplays[dpy]); 946 const int32_t id = hw->getHwcDisplayId(); 947 if (id >= 0) { 948 const Vector< sp<Layer> >& currentLayers( 949 hw->getVisibleLayersSortedByZ()); 950 const size_t count = currentLayers.size(); 951 HWComposer::LayerListIterator cur = hwc.begin(id); 952 const HWComposer::LayerListIterator end = hwc.end(id); 953 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 954 /* 955 * update the per-frame h/w composer data for each layer 956 * and build the transparent region of the FB 957 */ 958 const sp<Layer>& layer(currentLayers[i]); 959 layer->setPerFrameData(hw, *cur); 960 } 961 } 962 } 963 964 status_t err = hwc.prepare(); 965 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 966 } 967} 968 969void SurfaceFlinger::doComposition() { 970 ATRACE_CALL(); 971 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 972 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 973 const sp<DisplayDevice>& hw(mDisplays[dpy]); 974 if (hw->canDraw()) { 975 // transform the dirty region into this screen's coordinate space 976 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 977 978 // repaint the framebuffer (if needed) 979 doDisplayComposition(hw, dirtyRegion); 980 981 hw->dirtyRegion.clear(); 982 hw->flip(hw->swapRegion); 983 hw->swapRegion.clear(); 984 } 985 // inform the h/w that we're done compositing 986 hw->compositionComplete(); 987 } 988 postFramebuffer(); 989} 990 991void SurfaceFlinger::postFramebuffer() 992{ 993 ATRACE_CALL(); 994 995 const nsecs_t now = systemTime(); 996 mDebugInSwapBuffers = now; 997 998 HWComposer& hwc(getHwComposer()); 999 if (hwc.initCheck() == NO_ERROR) { 1000 if (!hwc.supportsFramebufferTarget()) { 1001 // EGL spec says: 1002 // "surface must be bound to the calling thread's current context, 1003 // for the current rendering API." 1004 DisplayDevice::makeCurrent(mEGLDisplay, 1005 getDefaultDisplayDevice(), mEGLContext); 1006 } 1007 hwc.commit(); 1008 } 1009 1010 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1011 sp<const DisplayDevice> hw(mDisplays[dpy]); 1012 const Vector< sp<Layer> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1013 hw->onSwapBuffersCompleted(hwc); 1014 const size_t count = currentLayers.size(); 1015 int32_t id = hw->getHwcDisplayId(); 1016 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1017 HWComposer::LayerListIterator cur = hwc.begin(id); 1018 const HWComposer::LayerListIterator end = hwc.end(id); 1019 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1020 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1021 } 1022 } else { 1023 for (size_t i = 0; i < count; i++) { 1024 currentLayers[i]->onLayerDisplayed(hw, NULL); 1025 } 1026 } 1027 } 1028 1029 mLastSwapBufferTime = systemTime() - now; 1030 mDebugInSwapBuffers = 0; 1031} 1032 1033void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1034{ 1035 ATRACE_CALL(); 1036 1037 Mutex::Autolock _l(mStateLock); 1038 const nsecs_t now = systemTime(); 1039 mDebugInTransaction = now; 1040 1041 // Here we're guaranteed that some transaction flags are set 1042 // so we can call handleTransactionLocked() unconditionally. 1043 // We call getTransactionFlags(), which will also clear the flags, 1044 // with mStateLock held to guarantee that mCurrentState won't change 1045 // until the transaction is committed. 1046 1047 transactionFlags = getTransactionFlags(eTransactionMask); 1048 handleTransactionLocked(transactionFlags); 1049 1050 mLastTransactionTime = systemTime() - now; 1051 mDebugInTransaction = 0; 1052 invalidateHwcGeometry(); 1053 // here the transaction has been committed 1054} 1055 1056void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1057{ 1058 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1059 const size_t count = currentLayers.size(); 1060 1061 /* 1062 * Traversal of the children 1063 * (perform the transaction for each of them if needed) 1064 */ 1065 1066 if (transactionFlags & eTraversalNeeded) { 1067 for (size_t i=0 ; i<count ; i++) { 1068 const sp<Layer>& layer(currentLayers[i]); 1069 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1070 if (!trFlags) continue; 1071 1072 const uint32_t flags = layer->doTransaction(0); 1073 if (flags & Layer::eVisibleRegion) 1074 mVisibleRegionsDirty = true; 1075 } 1076 } 1077 1078 /* 1079 * Perform display own transactions if needed 1080 */ 1081 1082 if (transactionFlags & eDisplayTransactionNeeded) { 1083 // here we take advantage of Vector's copy-on-write semantics to 1084 // improve performance by skipping the transaction entirely when 1085 // know that the lists are identical 1086 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1087 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1088 if (!curr.isIdenticalTo(draw)) { 1089 mVisibleRegionsDirty = true; 1090 const size_t cc = curr.size(); 1091 size_t dc = draw.size(); 1092 1093 // find the displays that were removed 1094 // (ie: in drawing state but not in current state) 1095 // also handle displays that changed 1096 // (ie: displays that are in both lists) 1097 for (size_t i=0 ; i<dc ; i++) { 1098 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1099 if (j < 0) { 1100 // in drawing state but not in current state 1101 if (!draw[i].isMainDisplay()) { 1102 // Call makeCurrent() on the primary display so we can 1103 // be sure that nothing associated with this display 1104 // is current. 1105 const sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1106 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1107 mDisplays.removeItem(draw.keyAt(i)); 1108 getHwComposer().disconnectDisplay(draw[i].type); 1109 if (draw[i].type < DisplayDevice::NUM_DISPLAY_TYPES) 1110 mEventThread->onHotplugReceived(draw[i].type, false); 1111 } else { 1112 ALOGW("trying to remove the main display"); 1113 } 1114 } else { 1115 // this display is in both lists. see if something changed. 1116 const DisplayDeviceState& state(curr[j]); 1117 const wp<IBinder>& display(curr.keyAt(j)); 1118 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1119 // changing the surface is like destroying and 1120 // recreating the DisplayDevice, so we just remove it 1121 // from the drawing state, so that it get re-added 1122 // below. 1123 mDisplays.removeItem(display); 1124 mDrawingState.displays.removeItemsAt(i); 1125 dc--; i--; 1126 // at this point we must loop to the next item 1127 continue; 1128 } 1129 1130 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1131 if (disp != NULL) { 1132 if (state.layerStack != draw[i].layerStack) { 1133 disp->setLayerStack(state.layerStack); 1134 } 1135 if ((state.orientation != draw[i].orientation) 1136 || (state.viewport != draw[i].viewport) 1137 || (state.frame != draw[i].frame)) 1138 { 1139 disp->setProjection(state.orientation, 1140 state.viewport, state.frame); 1141 } 1142 } 1143 } 1144 } 1145 1146 // find displays that were added 1147 // (ie: in current state but not in drawing state) 1148 for (size_t i=0 ; i<cc ; i++) { 1149 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1150 const DisplayDeviceState& state(curr[i]); 1151 1152 sp<DisplaySurface> dispSurface; 1153 int32_t hwcDisplayId = allocateHwcDisplayId(state.type); 1154 if (state.isVirtualDisplay()) { 1155 if (state.surface != NULL) { 1156 dispSurface = new VirtualDisplaySurface( 1157 *mHwc, hwcDisplayId, state.surface, 1158 state.displayName); 1159 } 1160 } else { 1161 ALOGE_IF(state.surface!=NULL, 1162 "adding a supported display, but rendering " 1163 "surface is provided (%p), ignoring it", 1164 state.surface.get()); 1165 1166 // for supported (by hwc) displays we provide our 1167 // own rendering surface 1168 dispSurface = new FramebufferSurface(*mHwc, state.type); 1169 } 1170 1171 const wp<IBinder>& display(curr.keyAt(i)); 1172 if (dispSurface != NULL) { 1173 sp<DisplayDevice> hw = new DisplayDevice(this, 1174 state.type, hwcDisplayId, state.isSecure, 1175 display, dispSurface, mEGLConfig); 1176 hw->setLayerStack(state.layerStack); 1177 hw->setProjection(state.orientation, 1178 state.viewport, state.frame); 1179 hw->setDisplayName(state.displayName); 1180 mDisplays.add(display, hw); 1181 if (state.type < DisplayDevice::NUM_DISPLAY_TYPES) 1182 mEventThread->onHotplugReceived(state.type, true); 1183 } 1184 } 1185 } 1186 } 1187 } 1188 1189 if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { 1190 // The transform hint might have changed for some layers 1191 // (either because a display has changed, or because a layer 1192 // as changed). 1193 // 1194 // Walk through all the layers in currentLayers, 1195 // and update their transform hint. 1196 // 1197 // If a layer is visible only on a single display, then that 1198 // display is used to calculate the hint, otherwise we use the 1199 // default display. 1200 // 1201 // NOTE: we do this here, rather than in rebuildLayerStacks() so that 1202 // the hint is set before we acquire a buffer from the surface texture. 1203 // 1204 // NOTE: layer transactions have taken place already, so we use their 1205 // drawing state. However, SurfaceFlinger's own transaction has not 1206 // happened yet, so we must use the current state layer list 1207 // (soon to become the drawing state list). 1208 // 1209 sp<const DisplayDevice> disp; 1210 uint32_t currentlayerStack = 0; 1211 for (size_t i=0; i<count; i++) { 1212 // NOTE: we rely on the fact that layers are sorted by 1213 // layerStack first (so we don't have to traverse the list 1214 // of displays for every layer). 1215 const sp<Layer>& layer(currentLayers[i]); 1216 uint32_t layerStack = layer->drawingState().layerStack; 1217 if (i==0 || currentlayerStack != layerStack) { 1218 currentlayerStack = layerStack; 1219 // figure out if this layerstack is mirrored 1220 // (more than one display) if so, pick the default display, 1221 // if not, pick the only display it's on. 1222 disp.clear(); 1223 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1224 sp<const DisplayDevice> hw(mDisplays[dpy]); 1225 if (hw->getLayerStack() == currentlayerStack) { 1226 if (disp == NULL) { 1227 disp = hw; 1228 } else { 1229 disp = getDefaultDisplayDevice(); 1230 break; 1231 } 1232 } 1233 } 1234 } 1235 if (disp != NULL) { 1236 // presumably this means this layer is using a layerStack 1237 // that is not visible on any display 1238 layer->updateTransformHint(disp); 1239 } 1240 } 1241 } 1242 1243 1244 /* 1245 * Perform our own transaction if needed 1246 */ 1247 1248 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1249 if (currentLayers.size() > previousLayers.size()) { 1250 // layers have been added 1251 mVisibleRegionsDirty = true; 1252 } 1253 1254 // some layers might have been removed, so 1255 // we need to update the regions they're exposing. 1256 if (mLayersRemoved) { 1257 mLayersRemoved = false; 1258 mVisibleRegionsDirty = true; 1259 const size_t count = previousLayers.size(); 1260 for (size_t i=0 ; i<count ; i++) { 1261 const sp<Layer>& layer(previousLayers[i]); 1262 if (currentLayers.indexOf(layer) < 0) { 1263 // this layer is not visible anymore 1264 // TODO: we could traverse the tree from front to back and 1265 // compute the actual visible region 1266 // TODO: we could cache the transformed region 1267 const Layer::State& s(layer->drawingState()); 1268 Region visibleReg = s.transform.transform( 1269 Region(Rect(s.active.w, s.active.h))); 1270 invalidateLayerStack(s.layerStack, visibleReg); 1271 } 1272 } 1273 } 1274 1275 commitTransaction(); 1276} 1277 1278void SurfaceFlinger::commitTransaction() 1279{ 1280 if (!mLayersPendingRemoval.isEmpty()) { 1281 // Notify removed layers now that they can't be drawn from 1282 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1283 mLayersPendingRemoval[i]->onRemoved(); 1284 } 1285 mLayersPendingRemoval.clear(); 1286 } 1287 1288 // If this transaction is part of a window animation then the next frame 1289 // we composite should be considered an animation as well. 1290 mAnimCompositionPending = mAnimTransactionPending; 1291 1292 mDrawingState = mCurrentState; 1293 mTransactionPending = false; 1294 mAnimTransactionPending = false; 1295 mTransactionCV.broadcast(); 1296} 1297 1298void SurfaceFlinger::computeVisibleRegions( 1299 const LayerVector& currentLayers, uint32_t layerStack, 1300 Region& outDirtyRegion, Region& outOpaqueRegion) 1301{ 1302 ATRACE_CALL(); 1303 1304 Region aboveOpaqueLayers; 1305 Region aboveCoveredLayers; 1306 Region dirty; 1307 1308 outDirtyRegion.clear(); 1309 1310 size_t i = currentLayers.size(); 1311 while (i--) { 1312 const sp<Layer>& layer = currentLayers[i]; 1313 1314 // start with the whole surface at its current location 1315 const Layer::State& s(layer->drawingState()); 1316 1317 // only consider the layers on the given layer stack 1318 if (s.layerStack != layerStack) 1319 continue; 1320 1321 /* 1322 * opaqueRegion: area of a surface that is fully opaque. 1323 */ 1324 Region opaqueRegion; 1325 1326 /* 1327 * visibleRegion: area of a surface that is visible on screen 1328 * and not fully transparent. This is essentially the layer's 1329 * footprint minus the opaque regions above it. 1330 * Areas covered by a translucent surface are considered visible. 1331 */ 1332 Region visibleRegion; 1333 1334 /* 1335 * coveredRegion: area of a surface that is covered by all 1336 * visible regions above it (which includes the translucent areas). 1337 */ 1338 Region coveredRegion; 1339 1340 /* 1341 * transparentRegion: area of a surface that is hinted to be completely 1342 * transparent. This is only used to tell when the layer has no visible 1343 * non-transparent regions and can be removed from the layer list. It 1344 * does not affect the visibleRegion of this layer or any layers 1345 * beneath it. The hint may not be correct if apps don't respect the 1346 * SurfaceView restrictions (which, sadly, some don't). 1347 */ 1348 Region transparentRegion; 1349 1350 1351 // handle hidden surfaces by setting the visible region to empty 1352 if (CC_LIKELY(layer->isVisible())) { 1353 const bool translucent = !layer->isOpaque(); 1354 Rect bounds(s.transform.transform(layer->computeBounds())); 1355 visibleRegion.set(bounds); 1356 if (!visibleRegion.isEmpty()) { 1357 // Remove the transparent area from the visible region 1358 if (translucent) { 1359 const Transform tr(s.transform); 1360 if (tr.transformed()) { 1361 if (tr.preserveRects()) { 1362 // transform the transparent region 1363 transparentRegion = tr.transform(s.transparentRegion); 1364 } else { 1365 // transformation too complex, can't do the 1366 // transparent region optimization. 1367 transparentRegion.clear(); 1368 } 1369 } else { 1370 transparentRegion = s.transparentRegion; 1371 } 1372 } 1373 1374 // compute the opaque region 1375 const int32_t layerOrientation = s.transform.getOrientation(); 1376 if (s.alpha==255 && !translucent && 1377 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1378 // the opaque region is the layer's footprint 1379 opaqueRegion = visibleRegion; 1380 } 1381 } 1382 } 1383 1384 // Clip the covered region to the visible region 1385 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1386 1387 // Update aboveCoveredLayers for next (lower) layer 1388 aboveCoveredLayers.orSelf(visibleRegion); 1389 1390 // subtract the opaque region covered by the layers above us 1391 visibleRegion.subtractSelf(aboveOpaqueLayers); 1392 1393 // compute this layer's dirty region 1394 if (layer->contentDirty) { 1395 // we need to invalidate the whole region 1396 dirty = visibleRegion; 1397 // as well, as the old visible region 1398 dirty.orSelf(layer->visibleRegion); 1399 layer->contentDirty = false; 1400 } else { 1401 /* compute the exposed region: 1402 * the exposed region consists of two components: 1403 * 1) what's VISIBLE now and was COVERED before 1404 * 2) what's EXPOSED now less what was EXPOSED before 1405 * 1406 * note that (1) is conservative, we start with the whole 1407 * visible region but only keep what used to be covered by 1408 * something -- which mean it may have been exposed. 1409 * 1410 * (2) handles areas that were not covered by anything but got 1411 * exposed because of a resize. 1412 */ 1413 const Region newExposed = visibleRegion - coveredRegion; 1414 const Region oldVisibleRegion = layer->visibleRegion; 1415 const Region oldCoveredRegion = layer->coveredRegion; 1416 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1417 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1418 } 1419 dirty.subtractSelf(aboveOpaqueLayers); 1420 1421 // accumulate to the screen dirty region 1422 outDirtyRegion.orSelf(dirty); 1423 1424 // Update aboveOpaqueLayers for next (lower) layer 1425 aboveOpaqueLayers.orSelf(opaqueRegion); 1426 1427 // Store the visible region in screen space 1428 layer->setVisibleRegion(visibleRegion); 1429 layer->setCoveredRegion(coveredRegion); 1430 layer->setVisibleNonTransparentRegion( 1431 visibleRegion.subtract(transparentRegion)); 1432 } 1433 1434 outOpaqueRegion = aboveOpaqueLayers; 1435} 1436 1437void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1438 const Region& dirty) { 1439 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1440 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1441 if (hw->getLayerStack() == layerStack) { 1442 hw->dirtyRegion.orSelf(dirty); 1443 } 1444 } 1445} 1446 1447void SurfaceFlinger::handlePageFlip() 1448{ 1449 Region dirtyRegion; 1450 1451 bool visibleRegions = false; 1452 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1453 const size_t count = currentLayers.size(); 1454 for (size_t i=0 ; i<count ; i++) { 1455 const sp<Layer>& layer(currentLayers[i]); 1456 const Region dirty(layer->latchBuffer(visibleRegions)); 1457 const Layer::State& s(layer->drawingState()); 1458 invalidateLayerStack(s.layerStack, dirty); 1459 } 1460 1461 mVisibleRegionsDirty |= visibleRegions; 1462} 1463 1464void SurfaceFlinger::invalidateHwcGeometry() 1465{ 1466 mHwWorkListDirty = true; 1467} 1468 1469 1470void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1471 const Region& inDirtyRegion) 1472{ 1473 Region dirtyRegion(inDirtyRegion); 1474 1475 // compute the invalid region 1476 hw->swapRegion.orSelf(dirtyRegion); 1477 1478 uint32_t flags = hw->getFlags(); 1479 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1480 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1481 // takes a rectangle, we must make sure to update that whole 1482 // rectangle in that case 1483 dirtyRegion.set(hw->swapRegion.bounds()); 1484 } else { 1485 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1486 // We need to redraw the rectangle that will be updated 1487 // (pushed to the framebuffer). 1488 // This is needed because PARTIAL_UPDATES only takes one 1489 // rectangle instead of a region (see DisplayDevice::flip()) 1490 dirtyRegion.set(hw->swapRegion.bounds()); 1491 } else { 1492 // we need to redraw everything (the whole screen) 1493 dirtyRegion.set(hw->bounds()); 1494 hw->swapRegion = dirtyRegion; 1495 } 1496 } 1497 1498 doComposeSurfaces(hw, dirtyRegion); 1499 1500 // update the swap region and clear the dirty region 1501 hw->swapRegion.orSelf(dirtyRegion); 1502 1503 // swap buffers (presentation) 1504 hw->swapBuffers(getHwComposer()); 1505} 1506 1507void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1508{ 1509 const int32_t id = hw->getHwcDisplayId(); 1510 HWComposer& hwc(getHwComposer()); 1511 HWComposer::LayerListIterator cur = hwc.begin(id); 1512 const HWComposer::LayerListIterator end = hwc.end(id); 1513 1514 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1515 if (hasGlesComposition) { 1516 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1517 1518 // set the frame buffer 1519 glMatrixMode(GL_MODELVIEW); 1520 glLoadIdentity(); 1521 1522 // Never touch the framebuffer if we don't have any framebuffer layers 1523 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1524 if (hasHwcComposition) { 1525 // when using overlays, we assume a fully transparent framebuffer 1526 // NOTE: we could reduce how much we need to clear, for instance 1527 // remove where there are opaque FB layers. however, on some 1528 // GPUs doing a "clean slate" glClear might be more efficient. 1529 // We'll revisit later if needed. 1530 glClearColor(0, 0, 0, 0); 1531 glClear(GL_COLOR_BUFFER_BIT); 1532 } else { 1533 // we start with the whole screen area 1534 const Region bounds(hw->getBounds()); 1535 1536 // we remove the scissor part 1537 // we're left with the letterbox region 1538 // (common case is that letterbox ends-up being empty) 1539 const Region letterbox(bounds.subtract(hw->getScissor())); 1540 1541 // compute the area to clear 1542 Region region(hw->undefinedRegion.merge(letterbox)); 1543 1544 // but limit it to the dirty region 1545 region.andSelf(dirty); 1546 1547 // screen is already cleared here 1548 if (!region.isEmpty()) { 1549 // can happen with SurfaceView 1550 drawWormhole(hw, region); 1551 } 1552 } 1553 1554 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 1555 // just to be on the safe side, we don't set the 1556 // scissor on the main display. It should never be needed 1557 // anyways (though in theory it could since the API allows it). 1558 const Rect& bounds(hw->getBounds()); 1559 const Rect& scissor(hw->getScissor()); 1560 if (scissor != bounds) { 1561 // scissor doesn't match the screen's dimensions, so we 1562 // need to clear everything outside of it and enable 1563 // the GL scissor so we don't draw anything where we shouldn't 1564 const GLint height = hw->getHeight(); 1565 glScissor(scissor.left, height - scissor.bottom, 1566 scissor.getWidth(), scissor.getHeight()); 1567 // enable scissor for this frame 1568 glEnable(GL_SCISSOR_TEST); 1569 } 1570 } 1571 } 1572 1573 /* 1574 * and then, render the layers targeted at the framebuffer 1575 */ 1576 1577 const Vector< sp<Layer> >& layers(hw->getVisibleLayersSortedByZ()); 1578 const size_t count = layers.size(); 1579 const Transform& tr = hw->getTransform(); 1580 if (cur != end) { 1581 // we're using h/w composer 1582 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1583 const sp<Layer>& layer(layers[i]); 1584 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1585 if (!clip.isEmpty()) { 1586 switch (cur->getCompositionType()) { 1587 case HWC_OVERLAY: { 1588 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1589 && i 1590 && layer->isOpaque() 1591 && hasGlesComposition) { 1592 // never clear the very first layer since we're 1593 // guaranteed the FB is already cleared 1594 layer->clearWithOpenGL(hw, clip); 1595 } 1596 break; 1597 } 1598 case HWC_FRAMEBUFFER: { 1599 layer->draw(hw, clip); 1600 break; 1601 } 1602 case HWC_FRAMEBUFFER_TARGET: { 1603 // this should not happen as the iterator shouldn't 1604 // let us get there. 1605 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1606 break; 1607 } 1608 } 1609 } 1610 layer->setAcquireFence(hw, *cur); 1611 } 1612 } else { 1613 // we're not using h/w composer 1614 for (size_t i=0 ; i<count ; ++i) { 1615 const sp<Layer>& layer(layers[i]); 1616 const Region clip(dirty.intersect( 1617 tr.transform(layer->visibleRegion))); 1618 if (!clip.isEmpty()) { 1619 layer->draw(hw, clip); 1620 } 1621 } 1622 } 1623 1624 // disable scissor at the end of the frame 1625 glDisable(GL_SCISSOR_TEST); 1626} 1627 1628void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1629 const Region& region) const 1630{ 1631 glDisable(GL_TEXTURE_EXTERNAL_OES); 1632 glDisable(GL_TEXTURE_2D); 1633 glDisable(GL_BLEND); 1634 glColor4f(0,0,0,0); 1635 1636 const int32_t height = hw->getHeight(); 1637 Region::const_iterator it = region.begin(); 1638 Region::const_iterator const end = region.end(); 1639 while (it != end) { 1640 const Rect& r = *it++; 1641 GLfloat vertices[][2] = { 1642 { (GLfloat) r.left, (GLfloat) (height - r.top) }, 1643 { (GLfloat) r.left, (GLfloat) (height - r.bottom) }, 1644 { (GLfloat) r.right, (GLfloat) (height - r.bottom) }, 1645 { (GLfloat) r.right, (GLfloat) (height - r.top) } 1646 }; 1647 glVertexPointer(2, GL_FLOAT, 0, vertices); 1648 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1649 } 1650} 1651 1652void SurfaceFlinger::addClientLayer(const sp<Client>& client, 1653 const sp<IBinder>& handle, 1654 const sp<IGraphicBufferProducer>& gbc, 1655 const sp<Layer>& lbc) 1656{ 1657 // attach this layer to the client 1658 client->attachLayer(handle, lbc); 1659 1660 // add this layer to the current state list 1661 Mutex::Autolock _l(mStateLock); 1662 mCurrentState.layersSortedByZ.add(lbc); 1663 mGraphicBufferProducerList.add(gbc->asBinder()); 1664} 1665 1666status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) 1667{ 1668 Mutex::Autolock _l(mStateLock); 1669 ssize_t index = mCurrentState.layersSortedByZ.remove(layer); 1670 if (index >= 0) { 1671 mLayersPendingRemoval.push(layer); 1672 mLayersRemoved = true; 1673 setTransactionFlags(eTransactionNeeded); 1674 return NO_ERROR; 1675 } 1676 return status_t(index); 1677} 1678 1679uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1680{ 1681 return android_atomic_release_load(&mTransactionFlags); 1682} 1683 1684uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1685{ 1686 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1687} 1688 1689uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1690{ 1691 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1692 if ((old & flags)==0) { // wake the server up 1693 signalTransaction(); 1694 } 1695 return old; 1696} 1697 1698void SurfaceFlinger::setTransactionState( 1699 const Vector<ComposerState>& state, 1700 const Vector<DisplayState>& displays, 1701 uint32_t flags) 1702{ 1703 ATRACE_CALL(); 1704 Mutex::Autolock _l(mStateLock); 1705 uint32_t transactionFlags = 0; 1706 1707 if (flags & eAnimation) { 1708 // For window updates that are part of an animation we must wait for 1709 // previous animation "frames" to be handled. 1710 while (mAnimTransactionPending) { 1711 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1712 if (CC_UNLIKELY(err != NO_ERROR)) { 1713 // just in case something goes wrong in SF, return to the 1714 // caller after a few seconds. 1715 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1716 "waiting for previous animation frame"); 1717 mAnimTransactionPending = false; 1718 break; 1719 } 1720 } 1721 } 1722 1723 size_t count = displays.size(); 1724 for (size_t i=0 ; i<count ; i++) { 1725 const DisplayState& s(displays[i]); 1726 transactionFlags |= setDisplayStateLocked(s); 1727 } 1728 1729 count = state.size(); 1730 for (size_t i=0 ; i<count ; i++) { 1731 const ComposerState& s(state[i]); 1732 // Here we need to check that the interface we're given is indeed 1733 // one of our own. A malicious client could give us a NULL 1734 // IInterface, or one of its own or even one of our own but a 1735 // different type. All these situations would cause us to crash. 1736 // 1737 // NOTE: it would be better to use RTTI as we could directly check 1738 // that we have a Client*. however, RTTI is disabled in Android. 1739 if (s.client != NULL) { 1740 sp<IBinder> binder = s.client->asBinder(); 1741 if (binder != NULL) { 1742 String16 desc(binder->getInterfaceDescriptor()); 1743 if (desc == ISurfaceComposerClient::descriptor) { 1744 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1745 transactionFlags |= setClientStateLocked(client, s.state); 1746 } 1747 } 1748 } 1749 } 1750 1751 if (transactionFlags) { 1752 // this triggers the transaction 1753 setTransactionFlags(transactionFlags); 1754 1755 // if this is a synchronous transaction, wait for it to take effect 1756 // before returning. 1757 if (flags & eSynchronous) { 1758 mTransactionPending = true; 1759 } 1760 if (flags & eAnimation) { 1761 mAnimTransactionPending = true; 1762 } 1763 while (mTransactionPending) { 1764 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1765 if (CC_UNLIKELY(err != NO_ERROR)) { 1766 // just in case something goes wrong in SF, return to the 1767 // called after a few seconds. 1768 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1769 mTransactionPending = false; 1770 break; 1771 } 1772 } 1773 } 1774} 1775 1776uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1777{ 1778 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1779 if (dpyIdx < 0) 1780 return 0; 1781 1782 uint32_t flags = 0; 1783 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1784 if (disp.isValid()) { 1785 const uint32_t what = s.what; 1786 if (what & DisplayState::eSurfaceChanged) { 1787 if (disp.surface->asBinder() != s.surface->asBinder()) { 1788 disp.surface = s.surface; 1789 flags |= eDisplayTransactionNeeded; 1790 } 1791 } 1792 if (what & DisplayState::eLayerStackChanged) { 1793 if (disp.layerStack != s.layerStack) { 1794 disp.layerStack = s.layerStack; 1795 flags |= eDisplayTransactionNeeded; 1796 } 1797 } 1798 if (what & DisplayState::eDisplayProjectionChanged) { 1799 if (disp.orientation != s.orientation) { 1800 disp.orientation = s.orientation; 1801 flags |= eDisplayTransactionNeeded; 1802 } 1803 if (disp.frame != s.frame) { 1804 disp.frame = s.frame; 1805 flags |= eDisplayTransactionNeeded; 1806 } 1807 if (disp.viewport != s.viewport) { 1808 disp.viewport = s.viewport; 1809 flags |= eDisplayTransactionNeeded; 1810 } 1811 } 1812 } 1813 return flags; 1814} 1815 1816uint32_t SurfaceFlinger::setClientStateLocked( 1817 const sp<Client>& client, 1818 const layer_state_t& s) 1819{ 1820 uint32_t flags = 0; 1821 sp<Layer> layer(client->getLayerUser(s.surface)); 1822 if (layer != 0) { 1823 const uint32_t what = s.what; 1824 if (what & layer_state_t::ePositionChanged) { 1825 if (layer->setPosition(s.x, s.y)) 1826 flags |= eTraversalNeeded; 1827 } 1828 if (what & layer_state_t::eLayerChanged) { 1829 // NOTE: index needs to be calculated before we update the state 1830 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1831 if (layer->setLayer(s.z)) { 1832 mCurrentState.layersSortedByZ.removeAt(idx); 1833 mCurrentState.layersSortedByZ.add(layer); 1834 // we need traversal (state changed) 1835 // AND transaction (list changed) 1836 flags |= eTransactionNeeded|eTraversalNeeded; 1837 } 1838 } 1839 if (what & layer_state_t::eSizeChanged) { 1840 if (layer->setSize(s.w, s.h)) { 1841 flags |= eTraversalNeeded; 1842 } 1843 } 1844 if (what & layer_state_t::eAlphaChanged) { 1845 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1846 flags |= eTraversalNeeded; 1847 } 1848 if (what & layer_state_t::eMatrixChanged) { 1849 if (layer->setMatrix(s.matrix)) 1850 flags |= eTraversalNeeded; 1851 } 1852 if (what & layer_state_t::eTransparentRegionChanged) { 1853 if (layer->setTransparentRegionHint(s.transparentRegion)) 1854 flags |= eTraversalNeeded; 1855 } 1856 if (what & layer_state_t::eVisibilityChanged) { 1857 if (layer->setFlags(s.flags, s.mask)) 1858 flags |= eTraversalNeeded; 1859 } 1860 if (what & layer_state_t::eCropChanged) { 1861 if (layer->setCrop(s.crop)) 1862 flags |= eTraversalNeeded; 1863 } 1864 if (what & layer_state_t::eLayerStackChanged) { 1865 // NOTE: index needs to be calculated before we update the state 1866 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1867 if (layer->setLayerStack(s.layerStack)) { 1868 mCurrentState.layersSortedByZ.removeAt(idx); 1869 mCurrentState.layersSortedByZ.add(layer); 1870 // we need traversal (state changed) 1871 // AND transaction (list changed) 1872 flags |= eTransactionNeeded|eTraversalNeeded; 1873 } 1874 } 1875 } 1876 return flags; 1877} 1878 1879status_t SurfaceFlinger::createLayer( 1880 const String8& name, 1881 const sp<Client>& client, 1882 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 1883 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp) 1884{ 1885 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1886 if (int32_t(w|h) < 0) { 1887 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1888 int(w), int(h)); 1889 return BAD_VALUE; 1890 } 1891 1892 status_t result = NO_ERROR; 1893 1894 sp<Layer> layer; 1895 1896 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1897 case ISurfaceComposerClient::eFXSurfaceNormal: 1898 result = createNormalLayer(client, 1899 name, w, h, flags, format, 1900 handle, gbp, &layer); 1901 break; 1902 case ISurfaceComposerClient::eFXSurfaceDim: 1903 result = createDimLayer(client, 1904 name, w, h, flags, 1905 handle, gbp, &layer); 1906 break; 1907 default: 1908 result = BAD_VALUE; 1909 break; 1910 } 1911 1912 if (result == NO_ERROR) { 1913 addClientLayer(client, *handle, *gbp, layer); 1914 setTransactionFlags(eTransactionNeeded); 1915 } 1916 return result; 1917} 1918 1919status_t SurfaceFlinger::createNormalLayer(const sp<Client>& client, 1920 const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 1921 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1922{ 1923 // initialize the surfaces 1924 switch (format) { 1925 case PIXEL_FORMAT_TRANSPARENT: 1926 case PIXEL_FORMAT_TRANSLUCENT: 1927 format = PIXEL_FORMAT_RGBA_8888; 1928 break; 1929 case PIXEL_FORMAT_OPAQUE: 1930#ifdef NO_RGBX_8888 1931 format = PIXEL_FORMAT_RGB_565; 1932#else 1933 format = PIXEL_FORMAT_RGBX_8888; 1934#endif 1935 break; 1936 } 1937 1938#ifdef NO_RGBX_8888 1939 if (format == PIXEL_FORMAT_RGBX_8888) 1940 format = PIXEL_FORMAT_RGBA_8888; 1941#endif 1942 1943 *outLayer = new Layer(this, client, name, w, h, flags); 1944 status_t err = (*outLayer)->setBuffers(w, h, format, flags); 1945 if (err == NO_ERROR) { 1946 *handle = (*outLayer)->getHandle(); 1947 *gbp = (*outLayer)->getBufferQueue(); 1948 } 1949 1950 ALOGE_IF(err, "createNormalLayer() failed (%s)", strerror(-err)); 1951 return err; 1952} 1953 1954status_t SurfaceFlinger::createDimLayer(const sp<Client>& client, 1955 const String8& name, uint32_t w, uint32_t h, uint32_t flags, 1956 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer) 1957{ 1958 *outLayer = new LayerDim(this, client, name, w, h, flags); 1959 *handle = (*outLayer)->getHandle(); 1960 *gbp = (*outLayer)->getBufferQueue(); 1961 return NO_ERROR; 1962} 1963 1964status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle) 1965{ 1966 // called by the window manager when it wants to remove a Layer 1967 status_t err = NO_ERROR; 1968 sp<Layer> l(client->getLayerUser(handle)); 1969 if (l != NULL) { 1970 err = removeLayer(l); 1971 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1972 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1973 } 1974 return err; 1975} 1976 1977status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer) 1978{ 1979 // called by ~LayerCleaner() when all references to the IBinder (handle) 1980 // are gone 1981 status_t err = NO_ERROR; 1982 sp<Layer> l(layer.promote()); 1983 if (l != NULL) { 1984 err = removeLayer(l); 1985 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1986 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1987 } 1988 return err; 1989} 1990 1991// --------------------------------------------------------------------------- 1992 1993void SurfaceFlinger::onInitializeDisplays() { 1994 // reset screen orientation and use primary layer stack 1995 Vector<ComposerState> state; 1996 Vector<DisplayState> displays; 1997 DisplayState d; 1998 d.what = DisplayState::eDisplayProjectionChanged | 1999 DisplayState::eLayerStackChanged; 2000 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2001 d.layerStack = 0; 2002 d.orientation = DisplayState::eOrientationDefault; 2003 d.frame.makeInvalid(); 2004 d.viewport.makeInvalid(); 2005 displays.add(d); 2006 setTransactionState(state, displays, 0); 2007 onScreenAcquired(getDefaultDisplayDevice()); 2008} 2009 2010void SurfaceFlinger::initializeDisplays() { 2011 class MessageScreenInitialized : public MessageBase { 2012 SurfaceFlinger* flinger; 2013 public: 2014 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2015 virtual bool handler() { 2016 flinger->onInitializeDisplays(); 2017 return true; 2018 } 2019 }; 2020 sp<MessageBase> msg = new MessageScreenInitialized(this); 2021 postMessageAsync(msg); // we may be called from main thread, use async message 2022} 2023 2024 2025void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2026 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2027 if (hw->isScreenAcquired()) { 2028 // this is expected, e.g. when power manager wakes up during boot 2029 ALOGD(" screen was previously acquired"); 2030 return; 2031 } 2032 2033 hw->acquireScreen(); 2034 int32_t type = hw->getDisplayType(); 2035 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2036 // built-in display, tell the HWC 2037 getHwComposer().acquire(type); 2038 2039 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2040 // FIXME: eventthread only knows about the main display right now 2041 mEventThread->onScreenAcquired(); 2042 } 2043 } 2044 mVisibleRegionsDirty = true; 2045 repaintEverything(); 2046} 2047 2048void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2049 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2050 if (!hw->isScreenAcquired()) { 2051 ALOGD(" screen was previously released"); 2052 return; 2053 } 2054 2055 hw->releaseScreen(); 2056 int32_t type = hw->getDisplayType(); 2057 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2058 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2059 // FIXME: eventthread only knows about the main display right now 2060 mEventThread->onScreenReleased(); 2061 } 2062 2063 // built-in display, tell the HWC 2064 getHwComposer().release(type); 2065 } 2066 mVisibleRegionsDirty = true; 2067 // from this point on, SF will stop drawing on this display 2068} 2069 2070void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2071 class MessageScreenAcquired : public MessageBase { 2072 SurfaceFlinger& mFlinger; 2073 sp<IBinder> mDisplay; 2074 public: 2075 MessageScreenAcquired(SurfaceFlinger& flinger, 2076 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2077 virtual bool handler() { 2078 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2079 if (hw == NULL) { 2080 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2081 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2082 ALOGW("Attempt to unblank virtual display"); 2083 } else { 2084 mFlinger.onScreenAcquired(hw); 2085 } 2086 return true; 2087 } 2088 }; 2089 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2090 postMessageSync(msg); 2091} 2092 2093void SurfaceFlinger::blank(const sp<IBinder>& display) { 2094 class MessageScreenReleased : public MessageBase { 2095 SurfaceFlinger& mFlinger; 2096 sp<IBinder> mDisplay; 2097 public: 2098 MessageScreenReleased(SurfaceFlinger& flinger, 2099 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2100 virtual bool handler() { 2101 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2102 if (hw == NULL) { 2103 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2104 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2105 ALOGW("Attempt to blank virtual display"); 2106 } else { 2107 mFlinger.onScreenReleased(hw); 2108 } 2109 return true; 2110 } 2111 }; 2112 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2113 postMessageSync(msg); 2114} 2115 2116// --------------------------------------------------------------------------- 2117 2118status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2119{ 2120 const size_t SIZE = 4096; 2121 char buffer[SIZE]; 2122 String8 result; 2123 2124 if (!PermissionCache::checkCallingPermission(sDump)) { 2125 snprintf(buffer, SIZE, "Permission Denial: " 2126 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2127 IPCThreadState::self()->getCallingPid(), 2128 IPCThreadState::self()->getCallingUid()); 2129 result.append(buffer); 2130 } else { 2131 // Try to get the main lock, but don't insist if we can't 2132 // (this would indicate SF is stuck, but we want to be able to 2133 // print something in dumpsys). 2134 int retry = 3; 2135 while (mStateLock.tryLock()<0 && --retry>=0) { 2136 usleep(1000000); 2137 } 2138 const bool locked(retry >= 0); 2139 if (!locked) { 2140 snprintf(buffer, SIZE, 2141 "SurfaceFlinger appears to be unresponsive, " 2142 "dumping anyways (no locks held)\n"); 2143 result.append(buffer); 2144 } 2145 2146 bool dumpAll = true; 2147 size_t index = 0; 2148 size_t numArgs = args.size(); 2149 if (numArgs) { 2150 if ((index < numArgs) && 2151 (args[index] == String16("--list"))) { 2152 index++; 2153 listLayersLocked(args, index, result, buffer, SIZE); 2154 dumpAll = false; 2155 } 2156 2157 if ((index < numArgs) && 2158 (args[index] == String16("--latency"))) { 2159 index++; 2160 dumpStatsLocked(args, index, result, buffer, SIZE); 2161 dumpAll = false; 2162 } 2163 2164 if ((index < numArgs) && 2165 (args[index] == String16("--latency-clear"))) { 2166 index++; 2167 clearStatsLocked(args, index, result, buffer, SIZE); 2168 dumpAll = false; 2169 } 2170 } 2171 2172 if (dumpAll) { 2173 dumpAllLocked(result, buffer, SIZE); 2174 } 2175 2176 if (locked) { 2177 mStateLock.unlock(); 2178 } 2179 } 2180 write(fd, result.string(), result.size()); 2181 return NO_ERROR; 2182} 2183 2184void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2185 String8& result, char* buffer, size_t SIZE) const 2186{ 2187 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2188 const size_t count = currentLayers.size(); 2189 for (size_t i=0 ; i<count ; i++) { 2190 const sp<Layer>& layer(currentLayers[i]); 2191 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2192 result.append(buffer); 2193 } 2194} 2195 2196void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2197 String8& result, char* buffer, size_t SIZE) const 2198{ 2199 String8 name; 2200 if (index < args.size()) { 2201 name = String8(args[index]); 2202 index++; 2203 } 2204 2205 const nsecs_t period = 2206 getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 2207 result.appendFormat("%lld\n", period); 2208 2209 if (name.isEmpty()) { 2210 mAnimFrameTracker.dump(result); 2211 } else { 2212 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2213 const size_t count = currentLayers.size(); 2214 for (size_t i=0 ; i<count ; i++) { 2215 const sp<Layer>& layer(currentLayers[i]); 2216 if (name == layer->getName()) { 2217 layer->dumpStats(result, buffer, SIZE); 2218 } 2219 } 2220 } 2221} 2222 2223void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2224 String8& result, char* buffer, size_t SIZE) 2225{ 2226 String8 name; 2227 if (index < args.size()) { 2228 name = String8(args[index]); 2229 index++; 2230 } 2231 2232 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2233 const size_t count = currentLayers.size(); 2234 for (size_t i=0 ; i<count ; i++) { 2235 const sp<Layer>& layer(currentLayers[i]); 2236 if (name.isEmpty() || (name == layer->getName())) { 2237 layer->clearStats(); 2238 } 2239 } 2240 2241 mAnimFrameTracker.clear(); 2242} 2243 2244/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2245{ 2246 static const char* config = 2247 " [sf" 2248#ifdef NO_RGBX_8888 2249 " NO_RGBX_8888" 2250#endif 2251#ifdef HAS_CONTEXT_PRIORITY 2252 " HAS_CONTEXT_PRIORITY" 2253#endif 2254#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2255 " NEVER_DEFAULT_TO_ASYNC_MODE" 2256#endif 2257#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2258 " TARGET_DISABLE_TRIPLE_BUFFERING" 2259#endif 2260 "]"; 2261 result.append(config); 2262} 2263 2264void SurfaceFlinger::dumpAllLocked( 2265 String8& result, char* buffer, size_t SIZE) const 2266{ 2267 // figure out if we're stuck somewhere 2268 const nsecs_t now = systemTime(); 2269 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2270 const nsecs_t inTransaction(mDebugInTransaction); 2271 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2272 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2273 2274 /* 2275 * Dump library configuration. 2276 */ 2277 result.append("Build configuration:"); 2278 appendSfConfigString(result); 2279 appendUiConfigString(result); 2280 appendGuiConfigString(result); 2281 result.append("\n"); 2282 2283 /* 2284 * Dump the visible layer list 2285 */ 2286 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2287 const size_t count = currentLayers.size(); 2288 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2289 result.append(buffer); 2290 for (size_t i=0 ; i<count ; i++) { 2291 const sp<Layer>& layer(currentLayers[i]); 2292 layer->dump(result, buffer, SIZE); 2293 } 2294 2295 /* 2296 * Dump Display state 2297 */ 2298 2299 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2300 result.append(buffer); 2301 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2302 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2303 hw->dump(result, buffer, SIZE); 2304 } 2305 2306 /* 2307 * Dump SurfaceFlinger global state 2308 */ 2309 2310 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2311 result.append(buffer); 2312 2313 HWComposer& hwc(getHwComposer()); 2314 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2315 const GLExtensions& extensions(GLExtensions::getInstance()); 2316 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2317 extensions.getVendor(), 2318 extensions.getRenderer(), 2319 extensions.getVersion()); 2320 result.append(buffer); 2321 2322 snprintf(buffer, SIZE, "EGL : %s\n", 2323 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2324 result.append(buffer); 2325 2326 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2327 result.append(buffer); 2328 2329 hw->undefinedRegion.dump(result, "undefinedRegion"); 2330 snprintf(buffer, SIZE, 2331 " orientation=%d, canDraw=%d\n", 2332 hw->getOrientation(), hw->canDraw()); 2333 result.append(buffer); 2334 snprintf(buffer, SIZE, 2335 " last eglSwapBuffers() time: %f us\n" 2336 " last transaction time : %f us\n" 2337 " transaction-flags : %08x\n" 2338 " refresh-rate : %f fps\n" 2339 " x-dpi : %f\n" 2340 " y-dpi : %f\n" 2341 " EGL_NATIVE_VISUAL_ID : %d\n" 2342 " gpu_to_cpu_unsupported : %d\n" 2343 , 2344 mLastSwapBufferTime/1000.0, 2345 mLastTransactionTime/1000.0, 2346 mTransactionFlags, 2347 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2348 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2349 hwc.getDpiY(HWC_DISPLAY_PRIMARY), 2350 mEGLNativeVisualId, 2351 !mGpuToCpuSupported); 2352 result.append(buffer); 2353 2354 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2355 inSwapBuffersDuration/1000.0); 2356 result.append(buffer); 2357 2358 snprintf(buffer, SIZE, " transaction time: %f us\n", 2359 inTransactionDuration/1000.0); 2360 result.append(buffer); 2361 2362 /* 2363 * VSYNC state 2364 */ 2365 mEventThread->dump(result, buffer, SIZE); 2366 2367 /* 2368 * Dump HWComposer state 2369 */ 2370 snprintf(buffer, SIZE, "h/w composer state:\n"); 2371 result.append(buffer); 2372 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2373 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2374 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2375 result.append(buffer); 2376 hwc.dump(result, buffer, SIZE); 2377 2378 /* 2379 * Dump gralloc state 2380 */ 2381 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2382 alloc.dump(result); 2383} 2384 2385const Vector< sp<Layer> >& 2386SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) { 2387 // Note: mStateLock is held here 2388 wp<IBinder> dpy; 2389 for (size_t i=0 ; i<mDisplays.size() ; i++) { 2390 if (mDisplays.valueAt(i)->getHwcDisplayId() == id) { 2391 dpy = mDisplays.keyAt(i); 2392 break; 2393 } 2394 } 2395 if (dpy == NULL) { 2396 ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id); 2397 // Just use the primary display so we have something to return 2398 dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY); 2399 } 2400 return getDisplayDevice(dpy)->getVisibleLayersSortedByZ(); 2401} 2402 2403bool SurfaceFlinger::startDdmConnection() 2404{ 2405 void* libddmconnection_dso = 2406 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2407 if (!libddmconnection_dso) { 2408 return false; 2409 } 2410 void (*DdmConnection_start)(const char* name); 2411 DdmConnection_start = 2412 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2413 if (!DdmConnection_start) { 2414 dlclose(libddmconnection_dso); 2415 return false; 2416 } 2417 (*DdmConnection_start)(getServiceName()); 2418 return true; 2419} 2420 2421status_t SurfaceFlinger::onTransact( 2422 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2423{ 2424 switch (code) { 2425 case CREATE_CONNECTION: 2426 case CREATE_DISPLAY: 2427 case SET_TRANSACTION_STATE: 2428 case BOOT_FINISHED: 2429 case BLANK: 2430 case UNBLANK: 2431 { 2432 // codes that require permission check 2433 IPCThreadState* ipc = IPCThreadState::self(); 2434 const int pid = ipc->getCallingPid(); 2435 const int uid = ipc->getCallingUid(); 2436 if ((uid != AID_GRAPHICS) && 2437 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2438 ALOGE("Permission Denial: " 2439 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2440 return PERMISSION_DENIED; 2441 } 2442 break; 2443 } 2444 case CAPTURE_SCREEN: 2445 { 2446 // codes that require permission check 2447 IPCThreadState* ipc = IPCThreadState::self(); 2448 const int pid = ipc->getCallingPid(); 2449 const int uid = ipc->getCallingUid(); 2450 if ((uid != AID_GRAPHICS) && 2451 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2452 ALOGE("Permission Denial: " 2453 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2454 return PERMISSION_DENIED; 2455 } 2456 break; 2457 } 2458 } 2459 2460 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2461 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2462 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2463 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2464 IPCThreadState* ipc = IPCThreadState::self(); 2465 const int pid = ipc->getCallingPid(); 2466 const int uid = ipc->getCallingUid(); 2467 ALOGE("Permission Denial: " 2468 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2469 return PERMISSION_DENIED; 2470 } 2471 int n; 2472 switch (code) { 2473 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2474 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2475 return NO_ERROR; 2476 case 1002: // SHOW_UPDATES 2477 n = data.readInt32(); 2478 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2479 invalidateHwcGeometry(); 2480 repaintEverything(); 2481 return NO_ERROR; 2482 case 1004:{ // repaint everything 2483 repaintEverything(); 2484 return NO_ERROR; 2485 } 2486 case 1005:{ // force transaction 2487 setTransactionFlags( 2488 eTransactionNeeded| 2489 eDisplayTransactionNeeded| 2490 eTraversalNeeded); 2491 return NO_ERROR; 2492 } 2493 case 1006:{ // send empty update 2494 signalRefresh(); 2495 return NO_ERROR; 2496 } 2497 case 1008: // toggle use of hw composer 2498 n = data.readInt32(); 2499 mDebugDisableHWC = n ? 1 : 0; 2500 invalidateHwcGeometry(); 2501 repaintEverything(); 2502 return NO_ERROR; 2503 case 1009: // toggle use of transform hint 2504 n = data.readInt32(); 2505 mDebugDisableTransformHint = n ? 1 : 0; 2506 invalidateHwcGeometry(); 2507 repaintEverything(); 2508 return NO_ERROR; 2509 case 1010: // interrogate. 2510 reply->writeInt32(0); 2511 reply->writeInt32(0); 2512 reply->writeInt32(mDebugRegion); 2513 reply->writeInt32(0); 2514 reply->writeInt32(mDebugDisableHWC); 2515 return NO_ERROR; 2516 case 1013: { 2517 Mutex::Autolock _l(mStateLock); 2518 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2519 reply->writeInt32(hw->getPageFlipCount()); 2520 } 2521 return NO_ERROR; 2522 } 2523 } 2524 return err; 2525} 2526 2527void SurfaceFlinger::repaintEverything() { 2528 android_atomic_or(1, &mRepaintEverything); 2529 signalTransaction(); 2530} 2531 2532// --------------------------------------------------------------------------- 2533// Capture screen into an IGraphiBufferProducer 2534// --------------------------------------------------------------------------- 2535 2536status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2537 const sp<IGraphicBufferProducer>& producer, 2538 uint32_t reqWidth, uint32_t reqHeight, 2539 uint32_t minLayerZ, uint32_t maxLayerZ, 2540 bool isCpuConsumer) { 2541 2542 if (CC_UNLIKELY(display == 0)) 2543 return BAD_VALUE; 2544 2545 if (CC_UNLIKELY(producer == 0)) 2546 return BAD_VALUE; 2547 2548 class MessageCaptureScreen : public MessageBase { 2549 SurfaceFlinger* flinger; 2550 sp<IBinder> display; 2551 sp<IGraphicBufferProducer> producer; 2552 uint32_t reqWidth, reqHeight; 2553 uint32_t minLayerZ,maxLayerZ; 2554 bool isCpuConsumer; 2555 status_t result; 2556 public: 2557 MessageCaptureScreen(SurfaceFlinger* flinger, 2558 const sp<IBinder>& display, 2559 const sp<IGraphicBufferProducer>& producer, 2560 uint32_t reqWidth, uint32_t reqHeight, 2561 uint32_t minLayerZ, uint32_t maxLayerZ, bool isCpuConsumer) 2562 : flinger(flinger), display(display), producer(producer), 2563 reqWidth(reqWidth), reqHeight(reqHeight), 2564 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2565 isCpuConsumer(isCpuConsumer), 2566 result(PERMISSION_DENIED) 2567 { 2568 } 2569 status_t getResult() const { 2570 return result; 2571 } 2572 virtual bool handler() { 2573 Mutex::Autolock _l(flinger->mStateLock); 2574 sp<const DisplayDevice> hw(flinger->getDisplayDevice(display)); 2575 2576 bool useReadPixels = false; 2577 if (isCpuConsumer) { 2578 bool formatSupportedBytBitmap = 2579 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBA_8888) || 2580 (flinger->mEGLNativeVisualId == HAL_PIXEL_FORMAT_RGBX_8888); 2581 if (formatSupportedBytBitmap == false) { 2582 // the pixel format we have is not compatible with 2583 // Bitmap.java, which is the likely client of this API, 2584 // so we just revert to glReadPixels() in that case. 2585 useReadPixels = true; 2586 } 2587 if (flinger->mGpuToCpuSupported == false) { 2588 // When we know the GL->CPU path works, we can call 2589 // captureScreenImplLocked() directly, instead of using the 2590 // glReadPixels() workaround. 2591 useReadPixels = true; 2592 } 2593 } 2594 2595 if (!useReadPixels) { 2596 result = flinger->captureScreenImplLocked(hw, 2597 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2598 } else { 2599 result = flinger->captureScreenImplCpuConsumerLocked(hw, 2600 producer, reqWidth, reqHeight, minLayerZ, maxLayerZ); 2601 } 2602 return true; 2603 } 2604 }; 2605 2606 sp<MessageBase> msg = new MessageCaptureScreen(this, 2607 display, producer, reqWidth, reqHeight, minLayerZ, maxLayerZ, 2608 isCpuConsumer); 2609 status_t res = postMessageSync(msg); 2610 if (res == NO_ERROR) { 2611 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2612 } 2613 return res; 2614} 2615 2616status_t SurfaceFlinger::captureScreenImplLocked( 2617 const sp<const DisplayDevice>& hw, 2618 const sp<IGraphicBufferProducer>& producer, 2619 uint32_t reqWidth, uint32_t reqHeight, 2620 uint32_t minLayerZ, uint32_t maxLayerZ) 2621{ 2622 ATRACE_CALL(); 2623 2624 // get screen geometry 2625 const uint32_t hw_w = hw->getWidth(); 2626 const uint32_t hw_h = hw->getHeight(); 2627 2628 // if we have secure windows on this display, never allow the screen capture 2629 if (hw->getSecureLayerVisible()) { 2630 ALOGW("FB is protected: PERMISSION_DENIED"); 2631 return PERMISSION_DENIED; 2632 } 2633 2634 if ((reqWidth > hw_w) || (reqHeight > hw_h)) { 2635 ALOGE("size mismatch (%d, %d) > (%d, %d)", 2636 reqWidth, reqHeight, hw_w, hw_h); 2637 return BAD_VALUE; 2638 } 2639 2640 reqWidth = (!reqWidth) ? hw_w : reqWidth; 2641 reqHeight = (!reqHeight) ? hw_h : reqHeight; 2642 const bool filtering = reqWidth != hw_w || reqWidth != hw_h; 2643 2644 // Create a surface to render into 2645 sp<Surface> surface = new Surface(producer); 2646 ANativeWindow* const window = surface.get(); 2647 2648 // set the buffer size to what the user requested 2649 native_window_set_buffers_user_dimensions(window, reqWidth, reqHeight); 2650 2651 // and create the corresponding EGLSurface 2652 EGLSurface eglSurface = eglCreateWindowSurface( 2653 mEGLDisplay, mEGLConfig, window, NULL); 2654 if (eglSurface == EGL_NO_SURFACE) { 2655 ALOGE("captureScreenImplLocked: eglCreateWindowSurface() failed 0x%4x", 2656 eglGetError()); 2657 return BAD_VALUE; 2658 } 2659 2660 if (!eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext)) { 2661 ALOGE("captureScreenImplLocked: eglMakeCurrent() failed 0x%4x", 2662 eglGetError()); 2663 eglDestroySurface(mEGLDisplay, eglSurface); 2664 return BAD_VALUE; 2665 } 2666 2667 // make sure to clear all GL error flags 2668 while ( glGetError() != GL_NO_ERROR ) ; 2669 2670 // set-up our viewport 2671 glViewport(0, 0, reqWidth, reqHeight); 2672 glMatrixMode(GL_PROJECTION); 2673 glLoadIdentity(); 2674 glOrthof(0, hw_w, 0, hw_h, 0, 1); 2675 glMatrixMode(GL_MODELVIEW); 2676 glLoadIdentity(); 2677 2678 // redraw the screen entirely... 2679 glDisable(GL_TEXTURE_EXTERNAL_OES); 2680 glDisable(GL_TEXTURE_2D); 2681 glClearColor(0,0,0,1); 2682 glClear(GL_COLOR_BUFFER_BIT); 2683 2684 const LayerVector& layers( mDrawingState.layersSortedByZ ); 2685 const size_t count = layers.size(); 2686 for (size_t i=0 ; i<count ; ++i) { 2687 const sp<Layer>& layer(layers[i]); 2688 const Layer::State& state(layer->drawingState()); 2689 if (state.layerStack == hw->getLayerStack()) { 2690 if (state.z >= minLayerZ && state.z <= maxLayerZ) { 2691 if (layer->isVisible()) { 2692 if (filtering) layer->setFiltering(true); 2693 layer->draw(hw); 2694 if (filtering) layer->setFiltering(false); 2695 } 2696 } 2697 } 2698 } 2699 2700 // compositionComplete is needed for older driver 2701 hw->compositionComplete(); 2702 2703 // and finishing things up... 2704 if (eglSwapBuffers(mEGLDisplay, eglSurface) != EGL_TRUE) { 2705 ALOGE("captureScreenImplLocked: eglSwapBuffers() failed 0x%4x", 2706 eglGetError()); 2707 eglDestroySurface(mEGLDisplay, eglSurface); 2708 return BAD_VALUE; 2709 } 2710 2711 eglDestroySurface(mEGLDisplay, eglSurface); 2712 2713 return NO_ERROR; 2714} 2715 2716 2717status_t SurfaceFlinger::captureScreenImplCpuConsumerLocked( 2718 const sp<const DisplayDevice>& hw, 2719 const sp<IGraphicBufferProducer>& producer, 2720 uint32_t reqWidth, uint32_t reqHeight, 2721 uint32_t minLayerZ, uint32_t maxLayerZ) 2722{ 2723 ATRACE_CALL(); 2724 2725 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2726 return INVALID_OPERATION; 2727 } 2728 2729 // create the texture that will receive the screenshot, later we'll 2730 // attach a FBO to it so we can call glReadPixels(). 2731 GLuint tname; 2732 glGenTextures(1, &tname); 2733 glBindTexture(GL_TEXTURE_2D, tname); 2734 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2735 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2736 2737 // the GLConsumer will provide the BufferQueue 2738 sp<GLConsumer> consumer = new GLConsumer(tname, true, GL_TEXTURE_2D); 2739 consumer->getBufferQueue()->setDefaultBufferFormat(HAL_PIXEL_FORMAT_RGBA_8888); 2740 2741 // call the new screenshot taking code, passing a BufferQueue to it 2742 status_t result = captureScreenImplLocked(hw, 2743 consumer->getBufferQueue(), reqWidth, reqHeight, minLayerZ, maxLayerZ); 2744 2745 if (result == NO_ERROR) { 2746 result = consumer->updateTexImage(); 2747 if (result == NO_ERROR) { 2748 // create a FBO 2749 GLuint name; 2750 glGenFramebuffersOES(1, &name); 2751 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2752 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2753 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2754 2755 reqWidth = consumer->getCurrentBuffer()->getWidth(); 2756 reqHeight = consumer->getCurrentBuffer()->getHeight(); 2757 2758 { 2759 // in this block we render the screenshot into the 2760 // CpuConsumer using glReadPixels from our GLConsumer, 2761 // Some older drivers don't support the GL->CPU path so 2762 // have to wrap it with a CPU->CPU path, which is what 2763 // glReadPixels essentially is 2764 2765 sp<Surface> sur = new Surface(producer); 2766 ANativeWindow* window = sur.get(); 2767 ANativeWindowBuffer* buffer; 2768 void* vaddr; 2769 2770 if (native_window_api_connect(window, 2771 NATIVE_WINDOW_API_CPU) == NO_ERROR) { 2772 int err = 0; 2773 err = native_window_set_buffers_dimensions(window, 2774 reqWidth, reqHeight); 2775 err |= native_window_set_buffers_format(window, 2776 HAL_PIXEL_FORMAT_RGBA_8888); 2777 err |= native_window_set_usage(window, 2778 GRALLOC_USAGE_SW_READ_OFTEN | 2779 GRALLOC_USAGE_SW_WRITE_OFTEN); 2780 2781 if (err == NO_ERROR) { 2782 if (native_window_dequeue_buffer_and_wait(window, 2783 &buffer) == NO_ERROR) { 2784 sp<GraphicBuffer> buf = 2785 static_cast<GraphicBuffer*>(buffer); 2786 if (buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, 2787 &vaddr) == NO_ERROR) { 2788 if (buffer->stride != int(reqWidth)) { 2789 // we're unlucky here, glReadPixels is 2790 // not able to deal with a stride not 2791 // equal to the width. 2792 uint32_t* tmp = new uint32_t[reqWidth*reqHeight]; 2793 if (tmp != NULL) { 2794 glReadPixels(0, 0, reqWidth, reqHeight, 2795 GL_RGBA, GL_UNSIGNED_BYTE, tmp); 2796 for (size_t y=0 ; y<reqHeight ; y++) { 2797 memcpy((uint32_t*)vaddr + y*buffer->stride, 2798 tmp + y*reqWidth, reqWidth*4); 2799 } 2800 delete [] tmp; 2801 } 2802 } else { 2803 glReadPixels(0, 0, reqWidth, reqHeight, 2804 GL_RGBA, GL_UNSIGNED_BYTE, vaddr); 2805 } 2806 buf->unlock(); 2807 } 2808 window->queueBuffer(window, buffer, -1); 2809 } 2810 } 2811 native_window_api_disconnect(window, NATIVE_WINDOW_API_CPU); 2812 } 2813 } 2814 2815 // back to main framebuffer 2816 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2817 glDeleteFramebuffersOES(1, &name); 2818 } 2819 } 2820 2821 glDeleteTextures(1, &tname); 2822 2823 DisplayDevice::makeCurrent(mEGLDisplay, 2824 getDefaultDisplayDevice(), mEGLContext); 2825 2826 return result; 2827} 2828 2829// --------------------------------------------------------------------------- 2830 2831SurfaceFlinger::LayerVector::LayerVector() { 2832} 2833 2834SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2835 : SortedVector<sp<Layer> >(rhs) { 2836} 2837 2838int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2839 const void* rhs) const 2840{ 2841 // sort layers per layer-stack, then by z-order and finally by sequence 2842 const sp<Layer>& l(*reinterpret_cast<const sp<Layer>*>(lhs)); 2843 const sp<Layer>& r(*reinterpret_cast<const sp<Layer>*>(rhs)); 2844 2845 uint32_t ls = l->currentState().layerStack; 2846 uint32_t rs = r->currentState().layerStack; 2847 if (ls != rs) 2848 return ls - rs; 2849 2850 uint32_t lz = l->currentState().z; 2851 uint32_t rz = r->currentState().z; 2852 if (lz != rz) 2853 return lz - rz; 2854 2855 return l->sequence - r->sequence; 2856} 2857 2858// --------------------------------------------------------------------------- 2859 2860SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2861 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2862} 2863 2864SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2865 : type(type), layerStack(DisplayDevice::NO_LAYER_STACK), orientation(0) { 2866 viewport.makeInvalid(); 2867 frame.makeInvalid(); 2868} 2869 2870// --------------------------------------------------------------------------- 2871 2872}; // namespace android 2873