SurfaceFlinger.cpp revision dd3cb84cfbe8068790c6233b5829fae9c4a0ee93
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <stdint.h> 20#include <sys/types.h> 21#include <errno.h> 22#include <math.h> 23#include <dlfcn.h> 24 25#include <EGL/egl.h> 26#include <GLES/gl.h> 27 28#include <cutils/log.h> 29#include <cutils/properties.h> 30 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryHeapBase.h> 34#include <binder/PermissionCache.h> 35 36#include <ui/DisplayInfo.h> 37 38#include <gui/BitTube.h> 39#include <gui/BufferQueue.h> 40#include <gui/GuiConfig.h> 41#include <gui/IDisplayEventConnection.h> 42#include <gui/SurfaceTextureClient.h> 43 44#include <ui/GraphicBufferAllocator.h> 45#include <ui/PixelFormat.h> 46#include <ui/UiConfig.h> 47 48#include <utils/misc.h> 49#include <utils/String8.h> 50#include <utils/String16.h> 51#include <utils/StopWatch.h> 52#include <utils/Trace.h> 53 54#include <private/android_filesystem_config.h> 55 56#include "clz.h" 57#include "DdmConnection.h" 58#include "DisplayDevice.h" 59#include "Client.h" 60#include "EventThread.h" 61#include "GLExtensions.h" 62#include "Layer.h" 63#include "LayerDim.h" 64#include "LayerScreenshot.h" 65#include "SurfaceFlinger.h" 66 67#include "DisplayHardware/FramebufferSurface.h" 68#include "DisplayHardware/GraphicBufferAlloc.h" 69#include "DisplayHardware/HWComposer.h" 70 71 72#define EGL_VERSION_HW_ANDROID 0x3143 73 74#define DISPLAY_COUNT 1 75 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 mDebugRegion(0), 97 mDebugDDMS(0), 98 mDebugDisableHWC(0), 99 mDebugDisableTransformHint(0), 100 mDebugInSwapBuffers(0), 101 mLastSwapBufferTime(0), 102 mDebugInTransaction(0), 103 mLastTransactionTime(0), 104 mBootFinished(false) 105{ 106 ALOGI("SurfaceFlinger is starting"); 107 108 // debugging stuff... 109 char value[PROPERTY_VALUE_MAX]; 110 111 property_get("debug.sf.showupdates", value, "0"); 112 mDebugRegion = atoi(value); 113 114 property_get("debug.sf.ddms", value, "0"); 115 mDebugDDMS = atoi(value); 116 if (mDebugDDMS) { 117 if (!startDdmConnection()) { 118 // start failed, and DDMS debugging not enabled 119 mDebugDDMS = 0; 120 } 121 } 122 ALOGI_IF(mDebugRegion, "showupdates enabled"); 123 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 124} 125 126void SurfaceFlinger::onFirstRef() 127{ 128 mEventQueue.init(this); 129 130 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 131 132 // Wait for the main thread to be done with its initialization 133 mReadyToRunBarrier.wait(); 134} 135 136 137SurfaceFlinger::~SurfaceFlinger() 138{ 139 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 140 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 141 eglTerminate(display); 142} 143 144void SurfaceFlinger::binderDied(const wp<IBinder>& who) 145{ 146 // the window manager died on us. prepare its eulogy. 147 148 // restore initial conditions (default device unblank, etc) 149 initializeDisplays(); 150 151 // restart the boot-animation 152 startBootAnim(); 153} 154 155sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 156{ 157 sp<ISurfaceComposerClient> bclient; 158 sp<Client> client(new Client(this)); 159 status_t err = client->initCheck(); 160 if (err == NO_ERROR) { 161 bclient = client; 162 } 163 return bclient; 164} 165 166sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName, 167 bool secure) 168{ 169 class DisplayToken : public BBinder { 170 sp<SurfaceFlinger> flinger; 171 virtual ~DisplayToken() { 172 // no more references, this display must be terminated 173 Mutex::Autolock _l(flinger->mStateLock); 174 flinger->mCurrentState.displays.removeItem(this); 175 flinger->setTransactionFlags(eDisplayTransactionNeeded); 176 } 177 public: 178 DisplayToken(const sp<SurfaceFlinger>& flinger) 179 : flinger(flinger) { 180 } 181 }; 182 183 sp<BBinder> token = new DisplayToken(this); 184 185 Mutex::Autolock _l(mStateLock); 186 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 187 info.displayName = displayName; 188 info.isSecure = secure; 189 mCurrentState.displays.add(token, info); 190 191 return token; 192} 193 194sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 195 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 196 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 197 return NULL; 198 } 199 return mDefaultDisplays[id]; 200} 201 202sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 203{ 204 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 205 return gba; 206} 207 208void SurfaceFlinger::bootFinished() 209{ 210 const nsecs_t now = systemTime(); 211 const nsecs_t duration = now - mBootTime; 212 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 213 mBootFinished = true; 214 215 // wait patiently for the window manager death 216 const String16 name("window"); 217 sp<IBinder> window(defaultServiceManager()->getService(name)); 218 if (window != 0) { 219 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 220 } 221 222 // stop boot animation 223 // formerly we would just kill the process, but we now ask it to exit so it 224 // can choose where to stop the animation. 225 property_set("service.bootanim.exit", "1"); 226} 227 228void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 229 class MessageDestroyGLTexture : public MessageBase { 230 GLuint texture; 231 public: 232 MessageDestroyGLTexture(GLuint texture) 233 : texture(texture) { 234 } 235 virtual bool handler() { 236 glDeleteTextures(1, &texture); 237 return true; 238 } 239 }; 240 postMessageAsync(new MessageDestroyGLTexture(texture)); 241} 242 243status_t SurfaceFlinger::selectConfigForAttribute( 244 EGLDisplay dpy, 245 EGLint const* attrs, 246 EGLint attribute, EGLint wanted, 247 EGLConfig* outConfig) 248{ 249 EGLConfig config = NULL; 250 EGLint numConfigs = -1, n=0; 251 eglGetConfigs(dpy, NULL, 0, &numConfigs); 252 EGLConfig* const configs = new EGLConfig[numConfigs]; 253 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 254 255 if (n) { 256 if (attribute != EGL_NONE) { 257 for (int i=0 ; i<n ; i++) { 258 EGLint value = 0; 259 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 260 if (wanted == value) { 261 *outConfig = configs[i]; 262 delete [] configs; 263 return NO_ERROR; 264 } 265 } 266 } else { 267 // just pick the first one 268 *outConfig = configs[0]; 269 delete [] configs; 270 return NO_ERROR; 271 } 272 } 273 delete [] configs; 274 return NAME_NOT_FOUND; 275} 276 277class EGLAttributeVector { 278 struct Attribute; 279 class Adder; 280 friend class Adder; 281 KeyedVector<Attribute, EGLint> mList; 282 struct Attribute { 283 Attribute() {}; 284 Attribute(EGLint v) : v(v) { } 285 EGLint v; 286 bool operator < (const Attribute& other) const { 287 // this places EGL_NONE at the end 288 EGLint lhs(v); 289 EGLint rhs(other.v); 290 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 291 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 292 return lhs < rhs; 293 } 294 }; 295 class Adder { 296 friend class EGLAttributeVector; 297 EGLAttributeVector& v; 298 EGLint attribute; 299 Adder(EGLAttributeVector& v, EGLint attribute) 300 : v(v), attribute(attribute) { 301 } 302 public: 303 void operator = (EGLint value) { 304 if (attribute != EGL_NONE) { 305 v.mList.add(attribute, value); 306 } 307 } 308 operator EGLint () const { return v.mList[attribute]; } 309 }; 310public: 311 EGLAttributeVector() { 312 mList.add(EGL_NONE, EGL_NONE); 313 } 314 void remove(EGLint attribute) { 315 if (attribute != EGL_NONE) { 316 mList.removeItem(attribute); 317 } 318 } 319 Adder operator [] (EGLint attribute) { 320 return Adder(*this, attribute); 321 } 322 EGLint operator [] (EGLint attribute) const { 323 return mList[attribute]; 324 } 325 // cast-operator to (EGLint const*) 326 operator EGLint const* () const { return &mList.keyAt(0).v; } 327}; 328 329EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 330 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 331 // it is to be used with WIFI displays 332 EGLConfig config; 333 EGLint dummy; 334 status_t err; 335 336 EGLAttributeVector attribs; 337 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 338 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 339 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 340 attribs[EGL_RED_SIZE] = 8; 341 attribs[EGL_GREEN_SIZE] = 8; 342 attribs[EGL_BLUE_SIZE] = 8; 343 344 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 345 if (!err) 346 goto success; 347 348 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 349 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 350 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 351 err = selectConfigForAttribute(display, attribs, 352 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 353 if (!err) 354 goto success; 355 356 // maybe we failed because of EGL_RECORDABLE_ANDROID 357 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 358 attribs.remove(EGL_RECORDABLE_ANDROID); 359 err = selectConfigForAttribute(display, attribs, 360 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 361 if (!err) 362 goto success; 363 364 // allow less than 24-bit color; the non-gpu-accelerated emulator only 365 // supports 16-bit color 366 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 367 attribs.remove(EGL_RED_SIZE); 368 attribs.remove(EGL_GREEN_SIZE); 369 attribs.remove(EGL_BLUE_SIZE); 370 err = selectConfigForAttribute(display, attribs, 371 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 372 if (!err) 373 goto success; 374 375 // this EGL is too lame for Android 376 ALOGE("no suitable EGLConfig found, giving up"); 377 378 return 0; 379 380success: 381 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 382 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 383 return config; 384} 385 386EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 387 // Also create our EGLContext 388 EGLint contextAttributes[] = { 389#ifdef EGL_IMG_context_priority 390#ifdef HAS_CONTEXT_PRIORITY 391#warning "using EGL_IMG_context_priority" 392 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 393#endif 394#endif 395 EGL_NONE, EGL_NONE 396 }; 397 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 398 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 399 return ctxt; 400} 401 402void SurfaceFlinger::initializeGL(EGLDisplay display) { 403 GLExtensions& extensions(GLExtensions::getInstance()); 404 extensions.initWithGLStrings( 405 glGetString(GL_VENDOR), 406 glGetString(GL_RENDERER), 407 glGetString(GL_VERSION), 408 glGetString(GL_EXTENSIONS), 409 eglQueryString(display, EGL_VENDOR), 410 eglQueryString(display, EGL_VERSION), 411 eglQueryString(display, EGL_EXTENSIONS)); 412 413 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 414 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 415 416 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 417 glPixelStorei(GL_PACK_ALIGNMENT, 4); 418 glEnableClientState(GL_VERTEX_ARRAY); 419 glShadeModel(GL_FLAT); 420 glDisable(GL_DITHER); 421 glDisable(GL_CULL_FACE); 422 423 struct pack565 { 424 inline uint16_t operator() (int r, int g, int b) const { 425 return (r<<11)|(g<<5)|b; 426 } 427 } pack565; 428 429 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 430 glGenTextures(1, &mProtectedTexName); 431 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 432 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 433 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 434 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 435 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 436 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 437 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 438 439 // print some debugging info 440 EGLint r,g,b,a; 441 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 442 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 443 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 444 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 445 ALOGI("EGL informations:"); 446 ALOGI("vendor : %s", extensions.getEglVendor()); 447 ALOGI("version : %s", extensions.getEglVersion()); 448 ALOGI("extensions: %s", extensions.getEglExtension()); 449 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 450 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 451 ALOGI("OpenGL ES informations:"); 452 ALOGI("vendor : %s", extensions.getVendor()); 453 ALOGI("renderer : %s", extensions.getRenderer()); 454 ALOGI("version : %s", extensions.getVersion()); 455 ALOGI("extensions: %s", extensions.getExtension()); 456 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 457 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 458} 459 460status_t SurfaceFlinger::readyToRun() 461{ 462 ALOGI( "SurfaceFlinger's main thread ready to run. " 463 "Initializing graphics H/W..."); 464 465 // initialize EGL for the default display 466 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 467 eglInitialize(mEGLDisplay, NULL, NULL); 468 469 // Initialize the H/W composer object. There may or may not be an 470 // actual hardware composer underneath. 471 mHwc = new HWComposer(this, 472 *static_cast<HWComposer::EventHandler *>(this)); 473 474 // initialize the config and context 475 EGLint format = mHwc->getVisualID(); 476 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 477 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 478 479 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 480 "couldn't create EGLContext"); 481 482 // initialize our non-virtual displays 483 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 484 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 485 mDefaultDisplays[i] = new BBinder(); 486 wp<IBinder> token = mDefaultDisplays[i]; 487 488 // set-up the displays that are already connected 489 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 490 // All non-virtual displays are currently considered secure. 491 bool isSecure = true; 492 mCurrentState.displays.add(token, DisplayDeviceState(type)); 493 sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc, i); 494 sp<SurfaceTextureClient> stc = new SurfaceTextureClient( 495 static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue())); 496 sp<DisplayDevice> hw = new DisplayDevice(this, 497 type, isSecure, token, stc, fbs, mEGLConfig); 498 if (i > DisplayDevice::DISPLAY_PRIMARY) { 499 // FIXME: currently we don't get blank/unblank requests 500 // for displays other than the main display, so we always 501 // assume a connected display is unblanked. 502 ALOGD("marking display %d as acquired/unblanked", i); 503 hw->acquireScreen(); 504 } 505 mDisplays.add(token, hw); 506 } 507 } 508 509 // we need a GL context current in a few places, when initializing 510 // OpenGL ES (see below), or creating a layer, 511 // or when a texture is (asynchronously) destroyed, and for that 512 // we need a valid surface, so it's convenient to use the main display 513 // for that. 514 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 515 516 // initialize OpenGL ES 517 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 518 initializeGL(mEGLDisplay); 519 520 // start the EventThread 521 mEventThread = new EventThread(this); 522 mEventQueue.setEventThread(mEventThread); 523 524 // initialize our drawing state 525 mDrawingState = mCurrentState; 526 527 528 // We're now ready to accept clients... 529 mReadyToRunBarrier.open(); 530 531 // set initial conditions (e.g. unblank default device) 532 initializeDisplays(); 533 534 // start boot animation 535 startBootAnim(); 536 537 return NO_ERROR; 538} 539 540int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 541 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 542 type : mHwc->allocateDisplayId(); 543} 544 545void SurfaceFlinger::startBootAnim() { 546 // start boot animation 547 property_set("service.bootanim.exit", "0"); 548 property_set("ctl.start", "bootanim"); 549} 550 551uint32_t SurfaceFlinger::getMaxTextureSize() const { 552 return mMaxTextureSize; 553} 554 555uint32_t SurfaceFlinger::getMaxViewportDims() const { 556 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 557 mMaxViewportDims[0] : mMaxViewportDims[1]; 558} 559 560// ---------------------------------------------------------------------------- 561 562bool SurfaceFlinger::authenticateSurfaceTexture( 563 const sp<ISurfaceTexture>& surfaceTexture) const { 564 Mutex::Autolock _l(mStateLock); 565 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 566 567 // Check the visible layer list for the ISurface 568 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 569 size_t count = currentLayers.size(); 570 for (size_t i=0 ; i<count ; i++) { 571 const sp<LayerBase>& layer(currentLayers[i]); 572 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 573 if (lbc != NULL) { 574 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 575 if (lbcBinder == surfaceTextureBinder) { 576 return true; 577 } 578 } 579 } 580 581 // Check the layers in the purgatory. This check is here so that if a 582 // SurfaceTexture gets destroyed before all the clients are done using it, 583 // the error will not be reported as "surface XYZ is not authenticated", but 584 // will instead fail later on when the client tries to use the surface, 585 // which should be reported as "surface XYZ returned an -ENODEV". The 586 // purgatorized layers are no less authentic than the visible ones, so this 587 // should not cause any harm. 588 size_t purgatorySize = mLayerPurgatory.size(); 589 for (size_t i=0 ; i<purgatorySize ; i++) { 590 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 591 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 592 if (lbc != NULL) { 593 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 594 if (lbcBinder == surfaceTextureBinder) { 595 return true; 596 } 597 } 598 } 599 600 return false; 601} 602 603status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 604 int32_t type = BAD_VALUE; 605 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 606 if (display == mDefaultDisplays[i]) { 607 type = i; 608 break; 609 } 610 } 611 612 if (type < 0) { 613 return type; 614 } 615 616 const HWComposer& hwc(getHwComposer()); 617 if (!hwc.isConnected(type)) { 618 return NAME_NOT_FOUND; 619 } 620 621 float xdpi = hwc.getDpiX(type); 622 float ydpi = hwc.getDpiY(type); 623 624 // TODO: Not sure if display density should handled by SF any longer 625 class Density { 626 static int getDensityFromProperty(char const* propName) { 627 char property[PROPERTY_VALUE_MAX]; 628 int density = 0; 629 if (property_get(propName, property, NULL) > 0) { 630 density = atoi(property); 631 } 632 return density; 633 } 634 public: 635 static int getEmuDensity() { 636 return getDensityFromProperty("qemu.sf.lcd_density"); } 637 static int getBuildDensity() { 638 return getDensityFromProperty("ro.sf.lcd_density"); } 639 }; 640 641 if (type == DisplayDevice::DISPLAY_PRIMARY) { 642 // The density of the device is provided by a build property 643 float density = Density::getBuildDensity() / 160.0f; 644 if (density == 0) { 645 // the build doesn't provide a density -- this is wrong! 646 // use xdpi instead 647 ALOGE("ro.sf.lcd_density must be defined as a build property"); 648 density = xdpi / 160.0f; 649 } 650 if (Density::getEmuDensity()) { 651 // if "qemu.sf.lcd_density" is specified, it overrides everything 652 xdpi = ydpi = density = Density::getEmuDensity(); 653 density /= 160.0f; 654 } 655 info->density = density; 656 657 // TODO: this needs to go away (currently needed only by webkit) 658 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 659 info->orientation = hw->getOrientation(); 660 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 661 } else { 662 // TODO: where should this value come from? 663 static const int TV_DENSITY = 213; 664 info->density = TV_DENSITY / 160.0f; 665 info->orientation = 0; 666 } 667 668 info->w = hwc.getWidth(type); 669 info->h = hwc.getHeight(type); 670 info->xdpi = xdpi; 671 info->ydpi = ydpi; 672 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 673 674 // All non-virtual displays are currently considered secure. 675 info->secure = true; 676 677 return NO_ERROR; 678} 679 680// ---------------------------------------------------------------------------- 681 682sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 683 return mEventThread->createEventConnection(); 684} 685 686// ---------------------------------------------------------------------------- 687 688void SurfaceFlinger::waitForEvent() { 689 mEventQueue.waitMessage(); 690} 691 692void SurfaceFlinger::signalTransaction() { 693 mEventQueue.invalidate(); 694} 695 696void SurfaceFlinger::signalLayerUpdate() { 697 mEventQueue.invalidate(); 698} 699 700void SurfaceFlinger::signalRefresh() { 701 mEventQueue.refresh(); 702} 703 704status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 705 nsecs_t reltime, uint32_t flags) { 706 return mEventQueue.postMessage(msg, reltime); 707} 708 709status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 710 nsecs_t reltime, uint32_t flags) { 711 status_t res = mEventQueue.postMessage(msg, reltime); 712 if (res == NO_ERROR) { 713 msg->wait(); 714 } 715 return res; 716} 717 718bool SurfaceFlinger::threadLoop() { 719 waitForEvent(); 720 return true; 721} 722 723void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 724 if (mEventThread == NULL) { 725 // This is a temporary workaround for b/7145521. A non-null pointer 726 // does not mean EventThread has finished initializing, so this 727 // is not a correct fix. 728 ALOGW("WARNING: EventThread not started, ignoring vsync"); 729 return; 730 } 731 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 732 // we should only receive DisplayDevice::DisplayType from the vsync callback 733 mEventThread->onVSyncReceived(type, timestamp); 734 } 735} 736 737void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 738 if (mEventThread == NULL) { 739 // This is a temporary workaround for b/7145521. A non-null pointer 740 // does not mean EventThread has finished initializing, so this 741 // is not a correct fix. 742 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 743 return; 744 } 745 746 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 747 Mutex::Autolock _l(mStateLock); 748 if (connected == false) { 749 mCurrentState.displays.removeItem(mDefaultDisplays[type]); 750 } else { 751 DisplayDeviceState info((DisplayDevice::DisplayType)type); 752 mCurrentState.displays.add(mDefaultDisplays[type], info); 753 } 754 setTransactionFlags(eDisplayTransactionNeeded); 755 756 // Defer EventThread notification until SF has updated mDisplays. 757 } 758} 759 760void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 761 getHwComposer().eventControl(disp, event, enabled); 762} 763 764void SurfaceFlinger::onMessageReceived(int32_t what) { 765 ATRACE_CALL(); 766 switch (what) { 767 case MessageQueue::INVALIDATE: 768 handleMessageTransaction(); 769 handleMessageInvalidate(); 770 signalRefresh(); 771 break; 772 case MessageQueue::REFRESH: 773 handleMessageRefresh(); 774 break; 775 } 776} 777 778void SurfaceFlinger::handleMessageTransaction() { 779 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 780 if (transactionFlags) { 781 handleTransaction(transactionFlags); 782 } 783} 784 785void SurfaceFlinger::handleMessageInvalidate() { 786 ATRACE_CALL(); 787 handlePageFlip(); 788} 789 790void SurfaceFlinger::handleMessageRefresh() { 791 ATRACE_CALL(); 792 preComposition(); 793 rebuildLayerStacks(); 794 setUpHWComposer(); 795 doDebugFlashRegions(); 796 doComposition(); 797 postComposition(); 798} 799 800void SurfaceFlinger::doDebugFlashRegions() 801{ 802 // is debugging enabled 803 if (CC_LIKELY(!mDebugRegion)) 804 return; 805 806 const bool repaintEverything = mRepaintEverything; 807 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 808 const sp<DisplayDevice>& hw(mDisplays[dpy]); 809 if (hw->canDraw()) { 810 // transform the dirty region into this screen's coordinate space 811 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 812 if (!dirtyRegion.isEmpty()) { 813 // redraw the whole screen 814 doComposeSurfaces(hw, Region(hw->bounds())); 815 816 // and draw the dirty region 817 glDisable(GL_TEXTURE_EXTERNAL_OES); 818 glDisable(GL_TEXTURE_2D); 819 glDisable(GL_BLEND); 820 glColor4f(1, 0, 1, 1); 821 const int32_t height = hw->getHeight(); 822 Region::const_iterator it = dirtyRegion.begin(); 823 Region::const_iterator const end = dirtyRegion.end(); 824 while (it != end) { 825 const Rect& r = *it++; 826 GLfloat vertices[][2] = { 827 { r.left, height - r.top }, 828 { r.left, height - r.bottom }, 829 { r.right, height - r.bottom }, 830 { r.right, height - r.top } 831 }; 832 glVertexPointer(2, GL_FLOAT, 0, vertices); 833 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 834 } 835 hw->compositionComplete(); 836 hw->swapBuffers(getHwComposer()); 837 } 838 } 839 } 840 841 postFramebuffer(); 842 843 if (mDebugRegion > 1) { 844 usleep(mDebugRegion * 1000); 845 } 846 847 HWComposer& hwc(getHwComposer()); 848 if (hwc.initCheck() == NO_ERROR) { 849 status_t err = hwc.prepare(); 850 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 851 } 852} 853 854void SurfaceFlinger::preComposition() 855{ 856 bool needExtraInvalidate = false; 857 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 858 const size_t count = currentLayers.size(); 859 for (size_t i=0 ; i<count ; i++) { 860 if (currentLayers[i]->onPreComposition()) { 861 needExtraInvalidate = true; 862 } 863 } 864 if (needExtraInvalidate) { 865 signalLayerUpdate(); 866 } 867} 868 869void SurfaceFlinger::postComposition() 870{ 871 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 872 const size_t count = currentLayers.size(); 873 for (size_t i=0 ; i<count ; i++) { 874 currentLayers[i]->onPostComposition(); 875 } 876} 877 878void SurfaceFlinger::rebuildLayerStacks() { 879 // rebuild the visible layer list per screen 880 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 881 ATRACE_CALL(); 882 mVisibleRegionsDirty = false; 883 invalidateHwcGeometry(); 884 885 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 886 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 887 Region opaqueRegion; 888 Region dirtyRegion; 889 Vector< sp<LayerBase> > layersSortedByZ; 890 const sp<DisplayDevice>& hw(mDisplays[dpy]); 891 const Transform& tr(hw->getTransform()); 892 const Rect bounds(hw->getBounds()); 893 if (hw->canDraw()) { 894 SurfaceFlinger::computeVisibleRegions(currentLayers, 895 hw->getLayerStack(), dirtyRegion, opaqueRegion); 896 897 const size_t count = currentLayers.size(); 898 for (size_t i=0 ; i<count ; i++) { 899 const sp<LayerBase>& layer(currentLayers[i]); 900 const Layer::State& s(layer->drawingState()); 901 if (s.layerStack == hw->getLayerStack()) { 902 Region drawRegion(tr.transform( 903 layer->visibleNonTransparentRegion)); 904 drawRegion.andSelf(bounds); 905 if (!drawRegion.isEmpty()) { 906 layersSortedByZ.add(layer); 907 } 908 } 909 } 910 } 911 hw->setVisibleLayersSortedByZ(layersSortedByZ); 912 hw->undefinedRegion.set(bounds); 913 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 914 hw->dirtyRegion.orSelf(dirtyRegion); 915 } 916 } 917} 918 919void SurfaceFlinger::setUpHWComposer() { 920 HWComposer& hwc(getHwComposer()); 921 if (hwc.initCheck() == NO_ERROR) { 922 // build the h/w work list 923 if (CC_UNLIKELY(mHwWorkListDirty)) { 924 mHwWorkListDirty = false; 925 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 926 sp<const DisplayDevice> hw(mDisplays[dpy]); 927 const int32_t id = hw->getHwcDisplayId(); 928 if (id >= 0) { 929 const Vector< sp<LayerBase> >& currentLayers( 930 hw->getVisibleLayersSortedByZ()); 931 const size_t count = currentLayers.size(); 932 if (hwc.createWorkList(id, count) == NO_ERROR) { 933 HWComposer::LayerListIterator cur = hwc.begin(id); 934 const HWComposer::LayerListIterator end = hwc.end(id); 935 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 936 const sp<LayerBase>& layer(currentLayers[i]); 937 layer->setGeometry(hw, *cur); 938 if (mDebugDisableHWC || mDebugRegion) { 939 cur->setSkip(true); 940 } 941 } 942 } 943 } 944 } 945 } 946 947 // set the per-frame data 948 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 949 sp<const DisplayDevice> hw(mDisplays[dpy]); 950 const int32_t id = hw->getHwcDisplayId(); 951 if (id >= 0) { 952 const Vector< sp<LayerBase> >& currentLayers( 953 hw->getVisibleLayersSortedByZ()); 954 const size_t count = currentLayers.size(); 955 HWComposer::LayerListIterator cur = hwc.begin(id); 956 const HWComposer::LayerListIterator end = hwc.end(id); 957 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 958 /* 959 * update the per-frame h/w composer data for each layer 960 * and build the transparent region of the FB 961 */ 962 const sp<LayerBase>& layer(currentLayers[i]); 963 layer->setPerFrameData(hw, *cur); 964 } 965 } 966 } 967 968 status_t err = hwc.prepare(); 969 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 970 } 971} 972 973void SurfaceFlinger::doComposition() { 974 ATRACE_CALL(); 975 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 976 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 977 const sp<DisplayDevice>& hw(mDisplays[dpy]); 978 if (hw->canDraw()) { 979 // transform the dirty region into this screen's coordinate space 980 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 981 if (!dirtyRegion.isEmpty()) { 982 // repaint the framebuffer (if needed) 983 doDisplayComposition(hw, dirtyRegion); 984 } 985 hw->dirtyRegion.clear(); 986 hw->flip(hw->swapRegion); 987 hw->swapRegion.clear(); 988 } 989 // inform the h/w that we're done compositing 990 hw->compositionComplete(); 991 } 992 postFramebuffer(); 993} 994 995void SurfaceFlinger::postFramebuffer() 996{ 997 ATRACE_CALL(); 998 999 const nsecs_t now = systemTime(); 1000 mDebugInSwapBuffers = now; 1001 1002 HWComposer& hwc(getHwComposer()); 1003 if (hwc.initCheck() == NO_ERROR) { 1004 if (!hwc.supportsFramebufferTarget()) { 1005 // EGL spec says: 1006 // "surface must be bound to the calling thread's current context, 1007 // for the current rendering API." 1008 DisplayDevice::makeCurrent(mEGLDisplay, 1009 getDefaultDisplayDevice(), mEGLContext); 1010 } 1011 hwc.commit(); 1012 } 1013 1014 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1015 sp<const DisplayDevice> hw(mDisplays[dpy]); 1016 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1017 hw->onSwapBuffersCompleted(hwc); 1018 const size_t count = currentLayers.size(); 1019 int32_t id = hw->getHwcDisplayId(); 1020 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1021 HWComposer::LayerListIterator cur = hwc.begin(id); 1022 const HWComposer::LayerListIterator end = hwc.end(id); 1023 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1024 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1025 } 1026 } else { 1027 for (size_t i = 0; i < count; i++) { 1028 currentLayers[i]->onLayerDisplayed(hw, NULL); 1029 } 1030 } 1031 } 1032 1033 mLastSwapBufferTime = systemTime() - now; 1034 mDebugInSwapBuffers = 0; 1035} 1036 1037void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1038{ 1039 ATRACE_CALL(); 1040 1041 Mutex::Autolock _l(mStateLock); 1042 const nsecs_t now = systemTime(); 1043 mDebugInTransaction = now; 1044 1045 // Here we're guaranteed that some transaction flags are set 1046 // so we can call handleTransactionLocked() unconditionally. 1047 // We call getTransactionFlags(), which will also clear the flags, 1048 // with mStateLock held to guarantee that mCurrentState won't change 1049 // until the transaction is committed. 1050 1051 transactionFlags = getTransactionFlags(eTransactionMask); 1052 handleTransactionLocked(transactionFlags); 1053 1054 mLastTransactionTime = systemTime() - now; 1055 mDebugInTransaction = 0; 1056 invalidateHwcGeometry(); 1057 // here the transaction has been committed 1058} 1059 1060void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1061{ 1062 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1063 const size_t count = currentLayers.size(); 1064 1065 /* 1066 * Traversal of the children 1067 * (perform the transaction for each of them if needed) 1068 */ 1069 1070 if (transactionFlags & eTraversalNeeded) { 1071 for (size_t i=0 ; i<count ; i++) { 1072 const sp<LayerBase>& layer = currentLayers[i]; 1073 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1074 if (!trFlags) continue; 1075 1076 const uint32_t flags = layer->doTransaction(0); 1077 if (flags & Layer::eVisibleRegion) 1078 mVisibleRegionsDirty = true; 1079 } 1080 } 1081 1082 /* 1083 * Perform display own transactions if needed 1084 */ 1085 1086 if (transactionFlags & eDisplayTransactionNeeded) { 1087 // here we take advantage of Vector's copy-on-write semantics to 1088 // improve performance by skipping the transaction entirely when 1089 // know that the lists are identical 1090 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1091 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1092 if (!curr.isIdenticalTo(draw)) { 1093 mVisibleRegionsDirty = true; 1094 const size_t cc = curr.size(); 1095 size_t dc = draw.size(); 1096 1097 // find the displays that were removed 1098 // (ie: in drawing state but not in current state) 1099 // also handle displays that changed 1100 // (ie: displays that are in both lists) 1101 for (size_t i=0 ; i<dc ; i++) { 1102 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1103 if (j < 0) { 1104 // in drawing state but not in current state 1105 if (!draw[i].isMainDisplay()) { 1106 // Call makeCurrent() on the primary display so we can 1107 // be sure that nothing associated with this display 1108 // is current. 1109 const sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1110 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1111 mDisplays.removeItem(draw.keyAt(i)); 1112 getHwComposer().disconnectDisplay(draw[i].type); 1113 mEventThread->onHotplugReceived(draw[i].type, false); 1114 } else { 1115 ALOGW("trying to remove the main display"); 1116 } 1117 } else { 1118 // this display is in both lists. see if something changed. 1119 const DisplayDeviceState& state(curr[j]); 1120 const wp<IBinder>& display(curr.keyAt(j)); 1121 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1122 // changing the surface is like destroying and 1123 // recreating the DisplayDevice, so we just remove it 1124 // from the drawing state, so that it get re-added 1125 // below. 1126 mDisplays.removeItem(display); 1127 mDrawingState.displays.removeItemsAt(i); 1128 dc--; i--; 1129 // at this point we must loop to the next item 1130 continue; 1131 } 1132 1133 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1134 if (disp != NULL) { 1135 if (state.layerStack != draw[i].layerStack) { 1136 disp->setLayerStack(state.layerStack); 1137 } 1138 if ((state.orientation != draw[i].orientation) 1139 || (state.viewport != draw[i].viewport) 1140 || (state.frame != draw[i].frame)) 1141 { 1142 disp->setProjection(state.orientation, 1143 state.viewport, state.frame); 1144 } 1145 1146 // Walk through all the layers in currentLayers, 1147 // and update their transform hint. 1148 // 1149 // TODO: we could be much more clever about which 1150 // layers we touch and how often we do these updates 1151 // (e.g. only touch the layers associated with this 1152 // display, and only on a rotation). 1153 for (size_t i = 0; i < count; i++) { 1154 const sp<LayerBase>& layerBase = currentLayers[i]; 1155 layerBase->updateTransformHint(); 1156 } 1157 } 1158 } 1159 } 1160 1161 // find displays that were added 1162 // (ie: in current state but not in drawing state) 1163 for (size_t i=0 ; i<cc ; i++) { 1164 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1165 const DisplayDeviceState& state(curr[i]); 1166 bool isSecure = false; 1167 1168 sp<FramebufferSurface> fbs; 1169 sp<SurfaceTextureClient> stc; 1170 if (!state.isVirtualDisplay()) { 1171 1172 ALOGE_IF(state.surface!=NULL, 1173 "adding a supported display, but rendering " 1174 "surface is provided (%p), ignoring it", 1175 state.surface.get()); 1176 1177 // All non-virtual displays are currently considered 1178 // secure. 1179 isSecure = true; 1180 1181 // for supported (by hwc) displays we provide our 1182 // own rendering surface 1183 fbs = new FramebufferSurface(*mHwc, state.type); 1184 stc = new SurfaceTextureClient( 1185 static_cast< sp<ISurfaceTexture> >( 1186 fbs->getBufferQueue())); 1187 } else { 1188 if (state.surface != NULL) { 1189 stc = new SurfaceTextureClient(state.surface); 1190 } 1191 isSecure = state.isSecure; 1192 } 1193 1194 const wp<IBinder>& display(curr.keyAt(i)); 1195 if (stc != NULL) { 1196 sp<DisplayDevice> hw = new DisplayDevice(this, 1197 state.type, isSecure, display, stc, fbs, 1198 mEGLConfig); 1199 hw->setLayerStack(state.layerStack); 1200 hw->setProjection(state.orientation, 1201 state.viewport, state.frame); 1202 hw->setDisplayName(state.displayName); 1203 mDisplays.add(display, hw); 1204 mEventThread->onHotplugReceived(state.type, true); 1205 } 1206 } 1207 } 1208 } 1209 } 1210 1211 /* 1212 * Perform our own transaction if needed 1213 */ 1214 1215 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1216 if (currentLayers.size() > previousLayers.size()) { 1217 // layers have been added 1218 mVisibleRegionsDirty = true; 1219 } 1220 1221 // some layers might have been removed, so 1222 // we need to update the regions they're exposing. 1223 if (mLayersRemoved) { 1224 mLayersRemoved = false; 1225 mVisibleRegionsDirty = true; 1226 const size_t count = previousLayers.size(); 1227 for (size_t i=0 ; i<count ; i++) { 1228 const sp<LayerBase>& layer(previousLayers[i]); 1229 if (currentLayers.indexOf(layer) < 0) { 1230 // this layer is not visible anymore 1231 // TODO: we could traverse the tree from front to back and 1232 // compute the actual visible region 1233 // TODO: we could cache the transformed region 1234 const Layer::State& s(layer->drawingState()); 1235 Region visibleReg = s.transform.transform( 1236 Region(Rect(s.active.w, s.active.h))); 1237 invalidateLayerStack(s.layerStack, visibleReg); 1238 } 1239 } 1240 } 1241 1242 commitTransaction(); 1243} 1244 1245void SurfaceFlinger::commitTransaction() 1246{ 1247 if (!mLayersPendingRemoval.isEmpty()) { 1248 // Notify removed layers now that they can't be drawn from 1249 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1250 mLayersPendingRemoval[i]->onRemoved(); 1251 } 1252 mLayersPendingRemoval.clear(); 1253 } 1254 1255 mDrawingState = mCurrentState; 1256 mTransactionPending = false; 1257 mAnimTransactionPending = false; 1258 mTransactionCV.broadcast(); 1259} 1260 1261void SurfaceFlinger::computeVisibleRegions( 1262 const LayerVector& currentLayers, uint32_t layerStack, 1263 Region& outDirtyRegion, Region& outOpaqueRegion) 1264{ 1265 ATRACE_CALL(); 1266 1267 Region aboveOpaqueLayers; 1268 Region aboveCoveredLayers; 1269 Region dirty; 1270 1271 outDirtyRegion.clear(); 1272 1273 size_t i = currentLayers.size(); 1274 while (i--) { 1275 const sp<LayerBase>& layer = currentLayers[i]; 1276 1277 // start with the whole surface at its current location 1278 const Layer::State& s(layer->drawingState()); 1279 1280 // only consider the layers on the given later stack 1281 if (s.layerStack != layerStack) 1282 continue; 1283 1284 /* 1285 * opaqueRegion: area of a surface that is fully opaque. 1286 */ 1287 Region opaqueRegion; 1288 1289 /* 1290 * visibleRegion: area of a surface that is visible on screen 1291 * and not fully transparent. This is essentially the layer's 1292 * footprint minus the opaque regions above it. 1293 * Areas covered by a translucent surface are considered visible. 1294 */ 1295 Region visibleRegion; 1296 1297 /* 1298 * coveredRegion: area of a surface that is covered by all 1299 * visible regions above it (which includes the translucent areas). 1300 */ 1301 Region coveredRegion; 1302 1303 /* 1304 * transparentRegion: area of a surface that is hinted to be completely 1305 * transparent. This is only used to tell when the layer has no visible 1306 * non-transparent regions and can be removed from the layer list. It 1307 * does not affect the visibleRegion of this layer or any layers 1308 * beneath it. The hint may not be correct if apps don't respect the 1309 * SurfaceView restrictions (which, sadly, some don't). 1310 */ 1311 Region transparentRegion; 1312 1313 1314 // handle hidden surfaces by setting the visible region to empty 1315 if (CC_LIKELY(layer->isVisible())) { 1316 const bool translucent = !layer->isOpaque(); 1317 Rect bounds(layer->computeBounds()); 1318 visibleRegion.set(bounds); 1319 if (!visibleRegion.isEmpty()) { 1320 // Remove the transparent area from the visible region 1321 if (translucent) { 1322 const Transform tr(s.transform); 1323 if (tr.transformed()) { 1324 if (tr.preserveRects()) { 1325 // transform the transparent region 1326 transparentRegion = tr.transform(s.transparentRegion); 1327 } else { 1328 // transformation too complex, can't do the 1329 // transparent region optimization. 1330 transparentRegion.clear(); 1331 } 1332 } else { 1333 transparentRegion = s.transparentRegion; 1334 } 1335 } 1336 1337 // compute the opaque region 1338 const int32_t layerOrientation = s.transform.getOrientation(); 1339 if (s.alpha==255 && !translucent && 1340 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1341 // the opaque region is the layer's footprint 1342 opaqueRegion = visibleRegion; 1343 } 1344 } 1345 } 1346 1347 // Clip the covered region to the visible region 1348 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1349 1350 // Update aboveCoveredLayers for next (lower) layer 1351 aboveCoveredLayers.orSelf(visibleRegion); 1352 1353 // subtract the opaque region covered by the layers above us 1354 visibleRegion.subtractSelf(aboveOpaqueLayers); 1355 1356 // compute this layer's dirty region 1357 if (layer->contentDirty) { 1358 // we need to invalidate the whole region 1359 dirty = visibleRegion; 1360 // as well, as the old visible region 1361 dirty.orSelf(layer->visibleRegion); 1362 layer->contentDirty = false; 1363 } else { 1364 /* compute the exposed region: 1365 * the exposed region consists of two components: 1366 * 1) what's VISIBLE now and was COVERED before 1367 * 2) what's EXPOSED now less what was EXPOSED before 1368 * 1369 * note that (1) is conservative, we start with the whole 1370 * visible region but only keep what used to be covered by 1371 * something -- which mean it may have been exposed. 1372 * 1373 * (2) handles areas that were not covered by anything but got 1374 * exposed because of a resize. 1375 */ 1376 const Region newExposed = visibleRegion - coveredRegion; 1377 const Region oldVisibleRegion = layer->visibleRegion; 1378 const Region oldCoveredRegion = layer->coveredRegion; 1379 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1380 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1381 } 1382 dirty.subtractSelf(aboveOpaqueLayers); 1383 1384 // accumulate to the screen dirty region 1385 outDirtyRegion.orSelf(dirty); 1386 1387 // Update aboveOpaqueLayers for next (lower) layer 1388 aboveOpaqueLayers.orSelf(opaqueRegion); 1389 1390 // Store the visible region in screen space 1391 layer->setVisibleRegion(visibleRegion); 1392 layer->setCoveredRegion(coveredRegion); 1393 layer->setVisibleNonTransparentRegion( 1394 visibleRegion.subtract(transparentRegion)); 1395 } 1396 1397 outOpaqueRegion = aboveOpaqueLayers; 1398} 1399 1400void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1401 const Region& dirty) { 1402 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1403 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1404 if (hw->getLayerStack() == layerStack) { 1405 hw->dirtyRegion.orSelf(dirty); 1406 } 1407 } 1408} 1409 1410void SurfaceFlinger::handlePageFlip() 1411{ 1412 Region dirtyRegion; 1413 1414 bool visibleRegions = false; 1415 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1416 const size_t count = currentLayers.size(); 1417 for (size_t i=0 ; i<count ; i++) { 1418 const sp<LayerBase>& layer(currentLayers[i]); 1419 const Region dirty(layer->latchBuffer(visibleRegions)); 1420 const Layer::State& s(layer->drawingState()); 1421 invalidateLayerStack(s.layerStack, dirty); 1422 } 1423 1424 mVisibleRegionsDirty |= visibleRegions; 1425} 1426 1427void SurfaceFlinger::invalidateHwcGeometry() 1428{ 1429 mHwWorkListDirty = true; 1430} 1431 1432 1433void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1434 const Region& inDirtyRegion) 1435{ 1436 Region dirtyRegion(inDirtyRegion); 1437 1438 // compute the invalid region 1439 hw->swapRegion.orSelf(dirtyRegion); 1440 1441 uint32_t flags = hw->getFlags(); 1442 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1443 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1444 // takes a rectangle, we must make sure to update that whole 1445 // rectangle in that case 1446 dirtyRegion.set(hw->swapRegion.bounds()); 1447 } else { 1448 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1449 // We need to redraw the rectangle that will be updated 1450 // (pushed to the framebuffer). 1451 // This is needed because PARTIAL_UPDATES only takes one 1452 // rectangle instead of a region (see DisplayDevice::flip()) 1453 dirtyRegion.set(hw->swapRegion.bounds()); 1454 } else { 1455 // we need to redraw everything (the whole screen) 1456 dirtyRegion.set(hw->bounds()); 1457 hw->swapRegion = dirtyRegion; 1458 } 1459 } 1460 1461 doComposeSurfaces(hw, dirtyRegion); 1462 1463 // update the swap region and clear the dirty region 1464 hw->swapRegion.orSelf(dirtyRegion); 1465 1466 // swap buffers (presentation) 1467 hw->swapBuffers(getHwComposer()); 1468} 1469 1470void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1471{ 1472 const int32_t id = hw->getHwcDisplayId(); 1473 HWComposer& hwc(getHwComposer()); 1474 HWComposer::LayerListIterator cur = hwc.begin(id); 1475 const HWComposer::LayerListIterator end = hwc.end(id); 1476 1477 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1478 if (hasGlesComposition) { 1479 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1480 1481 // set the frame buffer 1482 glMatrixMode(GL_MODELVIEW); 1483 glLoadIdentity(); 1484 1485 // Never touch the framebuffer if we don't have any framebuffer layers 1486 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1487 if (hasHwcComposition) { 1488 // when using overlays, we assume a fully transparent framebuffer 1489 // NOTE: we could reduce how much we need to clear, for instance 1490 // remove where there are opaque FB layers. however, on some 1491 // GPUs doing a "clean slate" glClear might be more efficient. 1492 // We'll revisit later if needed. 1493 glClearColor(0, 0, 0, 0); 1494 glClear(GL_COLOR_BUFFER_BIT); 1495 } else { 1496 const Region region(hw->undefinedRegion.intersect(dirty)); 1497 // screen is already cleared here 1498 if (!region.isEmpty()) { 1499 // can happen with SurfaceView 1500 drawWormhole(hw, region); 1501 } 1502 } 1503 } 1504 1505 /* 1506 * and then, render the layers targeted at the framebuffer 1507 */ 1508 1509 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1510 const size_t count = layers.size(); 1511 const Transform& tr = hw->getTransform(); 1512 if (cur != end) { 1513 // we're using h/w composer 1514 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1515 const sp<LayerBase>& layer(layers[i]); 1516 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1517 if (!clip.isEmpty()) { 1518 switch (cur->getCompositionType()) { 1519 case HWC_OVERLAY: { 1520 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1521 && i 1522 && layer->isOpaque() 1523 && hasGlesComposition) { 1524 // never clear the very first layer since we're 1525 // guaranteed the FB is already cleared 1526 layer->clearWithOpenGL(hw, clip); 1527 } 1528 break; 1529 } 1530 case HWC_FRAMEBUFFER: { 1531 layer->draw(hw, clip); 1532 break; 1533 } 1534 case HWC_FRAMEBUFFER_TARGET: { 1535 // this should not happen as the iterator shouldn't 1536 // let us get there. 1537 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1538 break; 1539 } 1540 } 1541 } 1542 layer->setAcquireFence(hw, *cur); 1543 } 1544 } else { 1545 // we're not using h/w composer 1546 for (size_t i=0 ; i<count ; ++i) { 1547 const sp<LayerBase>& layer(layers[i]); 1548 const Region clip(dirty.intersect( 1549 tr.transform(layer->visibleRegion))); 1550 if (!clip.isEmpty()) { 1551 layer->draw(hw, clip); 1552 } 1553 } 1554 } 1555} 1556 1557void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1558 const Region& region) const 1559{ 1560 glDisable(GL_TEXTURE_EXTERNAL_OES); 1561 glDisable(GL_TEXTURE_2D); 1562 glDisable(GL_BLEND); 1563 glColor4f(0,0,0,0); 1564 1565 const int32_t height = hw->getHeight(); 1566 Region::const_iterator it = region.begin(); 1567 Region::const_iterator const end = region.end(); 1568 while (it != end) { 1569 const Rect& r = *it++; 1570 GLfloat vertices[][2] = { 1571 { r.left, height - r.top }, 1572 { r.left, height - r.bottom }, 1573 { r.right, height - r.bottom }, 1574 { r.right, height - r.top } 1575 }; 1576 glVertexPointer(2, GL_FLOAT, 0, vertices); 1577 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1578 } 1579} 1580 1581ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1582 const sp<LayerBaseClient>& lbc) 1583{ 1584 // attach this layer to the client 1585 size_t name = client->attachLayer(lbc); 1586 1587 // add this layer to the current state list 1588 Mutex::Autolock _l(mStateLock); 1589 mCurrentState.layersSortedByZ.add(lbc); 1590 1591 return ssize_t(name); 1592} 1593 1594status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1595{ 1596 Mutex::Autolock _l(mStateLock); 1597 status_t err = purgatorizeLayer_l(layer); 1598 if (err == NO_ERROR) 1599 setTransactionFlags(eTransactionNeeded); 1600 return err; 1601} 1602 1603status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1604{ 1605 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1606 if (index >= 0) { 1607 mLayersRemoved = true; 1608 return NO_ERROR; 1609 } 1610 return status_t(index); 1611} 1612 1613status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1614{ 1615 // First add the layer to the purgatory list, which makes sure it won't 1616 // go away, then remove it from the main list (through a transaction). 1617 ssize_t err = removeLayer_l(layerBase); 1618 if (err >= 0) { 1619 mLayerPurgatory.add(layerBase); 1620 } 1621 1622 mLayersPendingRemoval.push(layerBase); 1623 1624 // it's possible that we don't find a layer, because it might 1625 // have been destroyed already -- this is not technically an error 1626 // from the user because there is a race between Client::destroySurface(), 1627 // ~Client() and ~ISurface(). 1628 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1629} 1630 1631uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1632{ 1633 return android_atomic_release_load(&mTransactionFlags); 1634} 1635 1636uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1637{ 1638 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1639} 1640 1641uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1642{ 1643 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1644 if ((old & flags)==0) { // wake the server up 1645 signalTransaction(); 1646 } 1647 return old; 1648} 1649 1650void SurfaceFlinger::setTransactionState( 1651 const Vector<ComposerState>& state, 1652 const Vector<DisplayState>& displays, 1653 uint32_t flags) 1654{ 1655 ATRACE_CALL(); 1656 Mutex::Autolock _l(mStateLock); 1657 uint32_t transactionFlags = 0; 1658 1659 if (flags & eAnimation) { 1660 // For window updates that are part of an animation we must wait for 1661 // previous animation "frames" to be handled. 1662 while (mAnimTransactionPending) { 1663 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1664 if (CC_UNLIKELY(err != NO_ERROR)) { 1665 // just in case something goes wrong in SF, return to the 1666 // caller after a few seconds. 1667 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1668 "waiting for previous animation frame"); 1669 mAnimTransactionPending = false; 1670 break; 1671 } 1672 } 1673 } 1674 1675 size_t count = displays.size(); 1676 for (size_t i=0 ; i<count ; i++) { 1677 const DisplayState& s(displays[i]); 1678 transactionFlags |= setDisplayStateLocked(s); 1679 } 1680 1681 count = state.size(); 1682 for (size_t i=0 ; i<count ; i++) { 1683 const ComposerState& s(state[i]); 1684 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1685 transactionFlags |= setClientStateLocked(client, s.state); 1686 } 1687 1688 if (transactionFlags) { 1689 // this triggers the transaction 1690 setTransactionFlags(transactionFlags); 1691 1692 // if this is a synchronous transaction, wait for it to take effect 1693 // before returning. 1694 if (flags & eSynchronous) { 1695 mTransactionPending = true; 1696 } 1697 if (flags & eAnimation) { 1698 mAnimTransactionPending = true; 1699 } 1700 while (mTransactionPending) { 1701 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1702 if (CC_UNLIKELY(err != NO_ERROR)) { 1703 // just in case something goes wrong in SF, return to the 1704 // called after a few seconds. 1705 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1706 mTransactionPending = false; 1707 break; 1708 } 1709 } 1710 } 1711} 1712 1713uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1714{ 1715 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1716 if (dpyIdx < 0) 1717 return 0; 1718 1719 uint32_t flags = 0; 1720 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1721 if (disp.isValid()) { 1722 const uint32_t what = s.what; 1723 if (what & DisplayState::eSurfaceChanged) { 1724 if (disp.surface->asBinder() != s.surface->asBinder()) { 1725 disp.surface = s.surface; 1726 flags |= eDisplayTransactionNeeded; 1727 } 1728 } 1729 if (what & DisplayState::eLayerStackChanged) { 1730 if (disp.layerStack != s.layerStack) { 1731 disp.layerStack = s.layerStack; 1732 flags |= eDisplayTransactionNeeded; 1733 } 1734 } 1735 if (what & DisplayState::eDisplayProjectionChanged) { 1736 if (disp.orientation != s.orientation) { 1737 disp.orientation = s.orientation; 1738 flags |= eDisplayTransactionNeeded; 1739 } 1740 if (disp.frame != s.frame) { 1741 disp.frame = s.frame; 1742 flags |= eDisplayTransactionNeeded; 1743 } 1744 if (disp.viewport != s.viewport) { 1745 disp.viewport = s.viewport; 1746 flags |= eDisplayTransactionNeeded; 1747 } 1748 } 1749 } 1750 return flags; 1751} 1752 1753uint32_t SurfaceFlinger::setClientStateLocked( 1754 const sp<Client>& client, 1755 const layer_state_t& s) 1756{ 1757 uint32_t flags = 0; 1758 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1759 if (layer != 0) { 1760 const uint32_t what = s.what; 1761 if (what & layer_state_t::ePositionChanged) { 1762 if (layer->setPosition(s.x, s.y)) 1763 flags |= eTraversalNeeded; 1764 } 1765 if (what & layer_state_t::eLayerChanged) { 1766 // NOTE: index needs to be calculated before we update the state 1767 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1768 if (layer->setLayer(s.z)) { 1769 mCurrentState.layersSortedByZ.removeAt(idx); 1770 mCurrentState.layersSortedByZ.add(layer); 1771 // we need traversal (state changed) 1772 // AND transaction (list changed) 1773 flags |= eTransactionNeeded|eTraversalNeeded; 1774 } 1775 } 1776 if (what & layer_state_t::eSizeChanged) { 1777 if (layer->setSize(s.w, s.h)) { 1778 flags |= eTraversalNeeded; 1779 } 1780 } 1781 if (what & layer_state_t::eAlphaChanged) { 1782 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1783 flags |= eTraversalNeeded; 1784 } 1785 if (what & layer_state_t::eMatrixChanged) { 1786 if (layer->setMatrix(s.matrix)) 1787 flags |= eTraversalNeeded; 1788 } 1789 if (what & layer_state_t::eTransparentRegionChanged) { 1790 if (layer->setTransparentRegionHint(s.transparentRegion)) 1791 flags |= eTraversalNeeded; 1792 } 1793 if (what & layer_state_t::eVisibilityChanged) { 1794 if (layer->setFlags(s.flags, s.mask)) 1795 flags |= eTraversalNeeded; 1796 } 1797 if (what & layer_state_t::eCropChanged) { 1798 if (layer->setCrop(s.crop)) 1799 flags |= eTraversalNeeded; 1800 } 1801 if (what & layer_state_t::eLayerStackChanged) { 1802 // NOTE: index needs to be calculated before we update the state 1803 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1804 if (layer->setLayerStack(s.layerStack)) { 1805 mCurrentState.layersSortedByZ.removeAt(idx); 1806 mCurrentState.layersSortedByZ.add(layer); 1807 // we need traversal (state changed) 1808 // AND transaction (list changed) 1809 flags |= eTransactionNeeded|eTraversalNeeded; 1810 } 1811 } 1812 } 1813 return flags; 1814} 1815 1816sp<ISurface> SurfaceFlinger::createLayer( 1817 ISurfaceComposerClient::surface_data_t* params, 1818 const String8& name, 1819 const sp<Client>& client, 1820 uint32_t w, uint32_t h, PixelFormat format, 1821 uint32_t flags) 1822{ 1823 sp<LayerBaseClient> layer; 1824 sp<ISurface> surfaceHandle; 1825 1826 if (int32_t(w|h) < 0) { 1827 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1828 int(w), int(h)); 1829 return surfaceHandle; 1830 } 1831 1832 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1833 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1834 case ISurfaceComposerClient::eFXSurfaceNormal: 1835 layer = createNormalLayer(client, w, h, flags, format); 1836 break; 1837 case ISurfaceComposerClient::eFXSurfaceBlur: 1838 case ISurfaceComposerClient::eFXSurfaceDim: 1839 layer = createDimLayer(client, w, h, flags); 1840 break; 1841 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1842 layer = createScreenshotLayer(client, w, h, flags); 1843 break; 1844 } 1845 1846 if (layer != 0) { 1847 layer->initStates(w, h, flags); 1848 layer->setName(name); 1849 ssize_t token = addClientLayer(client, layer); 1850 surfaceHandle = layer->getSurface(); 1851 if (surfaceHandle != 0) { 1852 params->token = token; 1853 params->identity = layer->getIdentity(); 1854 } 1855 setTransactionFlags(eTransactionNeeded); 1856 } 1857 1858 return surfaceHandle; 1859} 1860 1861sp<Layer> SurfaceFlinger::createNormalLayer( 1862 const sp<Client>& client, 1863 uint32_t w, uint32_t h, uint32_t flags, 1864 PixelFormat& format) 1865{ 1866 // initialize the surfaces 1867 switch (format) { 1868 case PIXEL_FORMAT_TRANSPARENT: 1869 case PIXEL_FORMAT_TRANSLUCENT: 1870 format = PIXEL_FORMAT_RGBA_8888; 1871 break; 1872 case PIXEL_FORMAT_OPAQUE: 1873#ifdef NO_RGBX_8888 1874 format = PIXEL_FORMAT_RGB_565; 1875#else 1876 format = PIXEL_FORMAT_RGBX_8888; 1877#endif 1878 break; 1879 } 1880 1881#ifdef NO_RGBX_8888 1882 if (format == PIXEL_FORMAT_RGBX_8888) 1883 format = PIXEL_FORMAT_RGBA_8888; 1884#endif 1885 1886 sp<Layer> layer = new Layer(this, client); 1887 status_t err = layer->setBuffers(w, h, format, flags); 1888 if (CC_LIKELY(err != NO_ERROR)) { 1889 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1890 layer.clear(); 1891 } 1892 return layer; 1893} 1894 1895sp<LayerDim> SurfaceFlinger::createDimLayer( 1896 const sp<Client>& client, 1897 uint32_t w, uint32_t h, uint32_t flags) 1898{ 1899 sp<LayerDim> layer = new LayerDim(this, client); 1900 return layer; 1901} 1902 1903sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1904 const sp<Client>& client, 1905 uint32_t w, uint32_t h, uint32_t flags) 1906{ 1907 sp<LayerScreenshot> layer = new LayerScreenshot(this, client); 1908 return layer; 1909} 1910 1911status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 1912{ 1913 /* 1914 * called by the window manager, when a surface should be marked for 1915 * destruction. 1916 * 1917 * The surface is removed from the current and drawing lists, but placed 1918 * in the purgatory queue, so it's not destroyed right-away (we need 1919 * to wait for all client's references to go away first). 1920 */ 1921 1922 status_t err = NAME_NOT_FOUND; 1923 Mutex::Autolock _l(mStateLock); 1924 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1925 1926 if (layer != 0) { 1927 err = purgatorizeLayer_l(layer); 1928 if (err == NO_ERROR) { 1929 setTransactionFlags(eTransactionNeeded); 1930 } 1931 } 1932 return err; 1933} 1934 1935status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 1936{ 1937 // called by ~ISurface() when all references are gone 1938 status_t err = NO_ERROR; 1939 sp<LayerBaseClient> l(layer.promote()); 1940 if (l != NULL) { 1941 Mutex::Autolock _l(mStateLock); 1942 err = removeLayer_l(l); 1943 if (err == NAME_NOT_FOUND) { 1944 // The surface wasn't in the current list, which means it was 1945 // removed already, which means it is in the purgatory, 1946 // and need to be removed from there. 1947 ssize_t idx = mLayerPurgatory.remove(l); 1948 ALOGE_IF(idx < 0, 1949 "layer=%p is not in the purgatory list", l.get()); 1950 } 1951 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1952 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1953 } 1954 return err; 1955} 1956 1957// --------------------------------------------------------------------------- 1958 1959void SurfaceFlinger::onInitializeDisplays() { 1960 // reset screen orientation 1961 Vector<ComposerState> state; 1962 Vector<DisplayState> displays; 1963 DisplayState d; 1964 d.what = DisplayState::eDisplayProjectionChanged; 1965 d.token = mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY]; 1966 d.orientation = DisplayState::eOrientationDefault; 1967 d.frame.makeInvalid(); 1968 d.viewport.makeInvalid(); 1969 displays.add(d); 1970 setTransactionState(state, displays, 0); 1971 onScreenAcquired(getDefaultDisplayDevice()); 1972} 1973 1974void SurfaceFlinger::initializeDisplays() { 1975 class MessageScreenInitialized : public MessageBase { 1976 SurfaceFlinger* flinger; 1977 public: 1978 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 1979 virtual bool handler() { 1980 flinger->onInitializeDisplays(); 1981 return true; 1982 } 1983 }; 1984 sp<MessageBase> msg = new MessageScreenInitialized(this); 1985 postMessageAsync(msg); // we may be called from main thread, use async message 1986} 1987 1988 1989void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 1990 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 1991 if (hw->isScreenAcquired()) { 1992 // this is expected, e.g. when power manager wakes up during boot 1993 ALOGD(" screen was previously acquired"); 1994 return; 1995 } 1996 1997 hw->acquireScreen(); 1998 int32_t type = hw->getDisplayType(); 1999 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2000 // built-in display, tell the HWC 2001 getHwComposer().acquire(type); 2002 2003 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2004 // FIXME: eventthread only knows about the main display right now 2005 mEventThread->onScreenAcquired(); 2006 } 2007 } 2008 mVisibleRegionsDirty = true; 2009 repaintEverything(); 2010} 2011 2012void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2013 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2014 if (!hw->isScreenAcquired()) { 2015 ALOGD(" screen was previously released"); 2016 return; 2017 } 2018 2019 hw->releaseScreen(); 2020 int32_t type = hw->getDisplayType(); 2021 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2022 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2023 // FIXME: eventthread only knows about the main display right now 2024 mEventThread->onScreenReleased(); 2025 } 2026 2027 // built-in display, tell the HWC 2028 getHwComposer().release(type); 2029 } 2030 mVisibleRegionsDirty = true; 2031 // from this point on, SF will stop drawing on this display 2032} 2033 2034void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2035 class MessageScreenAcquired : public MessageBase { 2036 SurfaceFlinger& mFlinger; 2037 sp<IBinder> mDisplay; 2038 public: 2039 MessageScreenAcquired(SurfaceFlinger& flinger, 2040 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2041 virtual bool handler() { 2042 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2043 if (hw == NULL) { 2044 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2045 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2046 ALOGW("Attempt to unblank virtual display"); 2047 } else { 2048 mFlinger.onScreenAcquired(hw); 2049 } 2050 return true; 2051 } 2052 }; 2053 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2054 postMessageSync(msg); 2055} 2056 2057void SurfaceFlinger::blank(const sp<IBinder>& display) { 2058 class MessageScreenReleased : public MessageBase { 2059 SurfaceFlinger& mFlinger; 2060 sp<IBinder> mDisplay; 2061 public: 2062 MessageScreenReleased(SurfaceFlinger& flinger, 2063 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2064 virtual bool handler() { 2065 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2066 if (hw == NULL) { 2067 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2068 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2069 ALOGW("Attempt to blank virtual display"); 2070 } else { 2071 mFlinger.onScreenReleased(hw); 2072 } 2073 return true; 2074 } 2075 }; 2076 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2077 postMessageSync(msg); 2078} 2079 2080// --------------------------------------------------------------------------- 2081 2082status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2083{ 2084 const size_t SIZE = 4096; 2085 char buffer[SIZE]; 2086 String8 result; 2087 2088 if (!PermissionCache::checkCallingPermission(sDump)) { 2089 snprintf(buffer, SIZE, "Permission Denial: " 2090 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2091 IPCThreadState::self()->getCallingPid(), 2092 IPCThreadState::self()->getCallingUid()); 2093 result.append(buffer); 2094 } else { 2095 // Try to get the main lock, but don't insist if we can't 2096 // (this would indicate SF is stuck, but we want to be able to 2097 // print something in dumpsys). 2098 int retry = 3; 2099 while (mStateLock.tryLock()<0 && --retry>=0) { 2100 usleep(1000000); 2101 } 2102 const bool locked(retry >= 0); 2103 if (!locked) { 2104 snprintf(buffer, SIZE, 2105 "SurfaceFlinger appears to be unresponsive, " 2106 "dumping anyways (no locks held)\n"); 2107 result.append(buffer); 2108 } 2109 2110 bool dumpAll = true; 2111 size_t index = 0; 2112 size_t numArgs = args.size(); 2113 if (numArgs) { 2114 if ((index < numArgs) && 2115 (args[index] == String16("--list"))) { 2116 index++; 2117 listLayersLocked(args, index, result, buffer, SIZE); 2118 dumpAll = false; 2119 } 2120 2121 if ((index < numArgs) && 2122 (args[index] == String16("--latency"))) { 2123 index++; 2124 dumpStatsLocked(args, index, result, buffer, SIZE); 2125 dumpAll = false; 2126 } 2127 2128 if ((index < numArgs) && 2129 (args[index] == String16("--latency-clear"))) { 2130 index++; 2131 clearStatsLocked(args, index, result, buffer, SIZE); 2132 dumpAll = false; 2133 } 2134 } 2135 2136 if (dumpAll) { 2137 dumpAllLocked(result, buffer, SIZE); 2138 } 2139 2140 if (locked) { 2141 mStateLock.unlock(); 2142 } 2143 } 2144 write(fd, result.string(), result.size()); 2145 return NO_ERROR; 2146} 2147 2148void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2149 String8& result, char* buffer, size_t SIZE) const 2150{ 2151 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2152 const size_t count = currentLayers.size(); 2153 for (size_t i=0 ; i<count ; i++) { 2154 const sp<LayerBase>& layer(currentLayers[i]); 2155 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2156 result.append(buffer); 2157 } 2158} 2159 2160void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2161 String8& result, char* buffer, size_t SIZE) const 2162{ 2163 String8 name; 2164 if (index < args.size()) { 2165 name = String8(args[index]); 2166 index++; 2167 } 2168 2169 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2170 const size_t count = currentLayers.size(); 2171 for (size_t i=0 ; i<count ; i++) { 2172 const sp<LayerBase>& layer(currentLayers[i]); 2173 if (name.isEmpty()) { 2174 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2175 result.append(buffer); 2176 } 2177 if (name.isEmpty() || (name == layer->getName())) { 2178 layer->dumpStats(result, buffer, SIZE); 2179 } 2180 } 2181} 2182 2183void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2184 String8& result, char* buffer, size_t SIZE) const 2185{ 2186 String8 name; 2187 if (index < args.size()) { 2188 name = String8(args[index]); 2189 index++; 2190 } 2191 2192 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2193 const size_t count = currentLayers.size(); 2194 for (size_t i=0 ; i<count ; i++) { 2195 const sp<LayerBase>& layer(currentLayers[i]); 2196 if (name.isEmpty() || (name == layer->getName())) { 2197 layer->clearStats(); 2198 } 2199 } 2200} 2201 2202/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2203{ 2204 static const char* config = 2205 " [sf" 2206#ifdef NO_RGBX_8888 2207 " NO_RGBX_8888" 2208#endif 2209#ifdef HAS_CONTEXT_PRIORITY 2210 " HAS_CONTEXT_PRIORITY" 2211#endif 2212#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2213 " NEVER_DEFAULT_TO_ASYNC_MODE" 2214#endif 2215#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2216 " TARGET_DISABLE_TRIPLE_BUFFERING" 2217#endif 2218 "]"; 2219 result.append(config); 2220} 2221 2222void SurfaceFlinger::dumpAllLocked( 2223 String8& result, char* buffer, size_t SIZE) const 2224{ 2225 // figure out if we're stuck somewhere 2226 const nsecs_t now = systemTime(); 2227 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2228 const nsecs_t inTransaction(mDebugInTransaction); 2229 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2230 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2231 2232 /* 2233 * Dump library configuration. 2234 */ 2235 result.append("Build configuration:"); 2236 appendSfConfigString(result); 2237 appendUiConfigString(result); 2238 appendGuiConfigString(result); 2239 result.append("\n"); 2240 2241 /* 2242 * Dump the visible layer list 2243 */ 2244 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2245 const size_t count = currentLayers.size(); 2246 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2247 result.append(buffer); 2248 for (size_t i=0 ; i<count ; i++) { 2249 const sp<LayerBase>& layer(currentLayers[i]); 2250 layer->dump(result, buffer, SIZE); 2251 } 2252 2253 /* 2254 * Dump the layers in the purgatory 2255 */ 2256 2257 const size_t purgatorySize = mLayerPurgatory.size(); 2258 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 2259 result.append(buffer); 2260 for (size_t i=0 ; i<purgatorySize ; i++) { 2261 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 2262 layer->shortDump(result, buffer, SIZE); 2263 } 2264 2265 /* 2266 * Dump Display state 2267 */ 2268 2269 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2270 result.append(buffer); 2271 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2272 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2273 hw->dump(result, buffer, SIZE); 2274 } 2275 2276 /* 2277 * Dump SurfaceFlinger global state 2278 */ 2279 2280 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2281 result.append(buffer); 2282 2283 HWComposer& hwc(getHwComposer()); 2284 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2285 const GLExtensions& extensions(GLExtensions::getInstance()); 2286 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2287 extensions.getVendor(), 2288 extensions.getRenderer(), 2289 extensions.getVersion()); 2290 result.append(buffer); 2291 2292 snprintf(buffer, SIZE, "EGL : %s\n", 2293 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2294 result.append(buffer); 2295 2296 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2297 result.append(buffer); 2298 2299 hw->undefinedRegion.dump(result, "undefinedRegion"); 2300 snprintf(buffer, SIZE, 2301 " orientation=%d, canDraw=%d\n", 2302 hw->getOrientation(), hw->canDraw()); 2303 result.append(buffer); 2304 snprintf(buffer, SIZE, 2305 " last eglSwapBuffers() time: %f us\n" 2306 " last transaction time : %f us\n" 2307 " transaction-flags : %08x\n" 2308 " refresh-rate : %f fps\n" 2309 " x-dpi : %f\n" 2310 " y-dpi : %f\n", 2311 mLastSwapBufferTime/1000.0, 2312 mLastTransactionTime/1000.0, 2313 mTransactionFlags, 2314 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2315 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2316 hwc.getDpiY(HWC_DISPLAY_PRIMARY)); 2317 result.append(buffer); 2318 2319 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2320 inSwapBuffersDuration/1000.0); 2321 result.append(buffer); 2322 2323 snprintf(buffer, SIZE, " transaction time: %f us\n", 2324 inTransactionDuration/1000.0); 2325 result.append(buffer); 2326 2327 /* 2328 * VSYNC state 2329 */ 2330 mEventThread->dump(result, buffer, SIZE); 2331 2332 /* 2333 * Dump HWComposer state 2334 */ 2335 snprintf(buffer, SIZE, "h/w composer state:\n"); 2336 result.append(buffer); 2337 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2338 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2339 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2340 result.append(buffer); 2341 hwc.dump(result, buffer, SIZE); 2342 2343 /* 2344 * Dump gralloc state 2345 */ 2346 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2347 alloc.dump(result); 2348} 2349 2350const Vector< sp<LayerBase> >& 2351SurfaceFlinger::getLayerSortedByZForHwcDisplay(int disp) { 2352 // Note: mStateLock is held here 2353 return getDisplayDevice( getBuiltInDisplay(disp) )->getVisibleLayersSortedByZ(); 2354} 2355 2356bool SurfaceFlinger::startDdmConnection() 2357{ 2358 void* libddmconnection_dso = 2359 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2360 if (!libddmconnection_dso) { 2361 return false; 2362 } 2363 void (*DdmConnection_start)(const char* name); 2364 DdmConnection_start = 2365 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2366 if (!DdmConnection_start) { 2367 dlclose(libddmconnection_dso); 2368 return false; 2369 } 2370 (*DdmConnection_start)(getServiceName()); 2371 return true; 2372} 2373 2374status_t SurfaceFlinger::onTransact( 2375 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2376{ 2377 switch (code) { 2378 case CREATE_CONNECTION: 2379 case SET_TRANSACTION_STATE: 2380 case BOOT_FINISHED: 2381 case BLANK: 2382 case UNBLANK: 2383 { 2384 // codes that require permission check 2385 IPCThreadState* ipc = IPCThreadState::self(); 2386 const int pid = ipc->getCallingPid(); 2387 const int uid = ipc->getCallingUid(); 2388 if ((uid != AID_GRAPHICS) && 2389 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2390 ALOGE("Permission Denial: " 2391 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2392 return PERMISSION_DENIED; 2393 } 2394 break; 2395 } 2396 case CAPTURE_SCREEN: 2397 { 2398 // codes that require permission check 2399 IPCThreadState* ipc = IPCThreadState::self(); 2400 const int pid = ipc->getCallingPid(); 2401 const int uid = ipc->getCallingUid(); 2402 if ((uid != AID_GRAPHICS) && 2403 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2404 ALOGE("Permission Denial: " 2405 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2406 return PERMISSION_DENIED; 2407 } 2408 break; 2409 } 2410 } 2411 2412 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2413 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2414 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2415 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2416 IPCThreadState* ipc = IPCThreadState::self(); 2417 const int pid = ipc->getCallingPid(); 2418 const int uid = ipc->getCallingUid(); 2419 ALOGE("Permission Denial: " 2420 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2421 return PERMISSION_DENIED; 2422 } 2423 int n; 2424 switch (code) { 2425 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2426 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2427 return NO_ERROR; 2428 case 1002: // SHOW_UPDATES 2429 n = data.readInt32(); 2430 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2431 invalidateHwcGeometry(); 2432 repaintEverything(); 2433 return NO_ERROR; 2434 case 1004:{ // repaint everything 2435 repaintEverything(); 2436 return NO_ERROR; 2437 } 2438 case 1005:{ // force transaction 2439 setTransactionFlags( 2440 eTransactionNeeded| 2441 eDisplayTransactionNeeded| 2442 eTraversalNeeded); 2443 return NO_ERROR; 2444 } 2445 case 1006:{ // send empty update 2446 signalRefresh(); 2447 return NO_ERROR; 2448 } 2449 case 1008: // toggle use of hw composer 2450 n = data.readInt32(); 2451 mDebugDisableHWC = n ? 1 : 0; 2452 invalidateHwcGeometry(); 2453 repaintEverything(); 2454 return NO_ERROR; 2455 case 1009: // toggle use of transform hint 2456 n = data.readInt32(); 2457 mDebugDisableTransformHint = n ? 1 : 0; 2458 invalidateHwcGeometry(); 2459 repaintEverything(); 2460 return NO_ERROR; 2461 case 1010: // interrogate. 2462 reply->writeInt32(0); 2463 reply->writeInt32(0); 2464 reply->writeInt32(mDebugRegion); 2465 reply->writeInt32(0); 2466 reply->writeInt32(mDebugDisableHWC); 2467 return NO_ERROR; 2468 case 1013: { 2469 Mutex::Autolock _l(mStateLock); 2470 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2471 reply->writeInt32(hw->getPageFlipCount()); 2472 } 2473 return NO_ERROR; 2474 } 2475 } 2476 return err; 2477} 2478 2479void SurfaceFlinger::repaintEverything() { 2480 android_atomic_or(1, &mRepaintEverything); 2481 signalTransaction(); 2482} 2483 2484// --------------------------------------------------------------------------- 2485 2486status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack, 2487 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2488{ 2489 Mutex::Autolock _l(mStateLock); 2490 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut); 2491} 2492 2493status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack, 2494 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2495{ 2496 ATRACE_CALL(); 2497 2498 if (!GLExtensions::getInstance().haveFramebufferObject()) 2499 return INVALID_OPERATION; 2500 2501 // get screen geometry 2502 // FIXME: figure out what it means to have a screenshot texture w/ multi-display 2503 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2504 const uint32_t hw_w = hw->getWidth(); 2505 const uint32_t hw_h = hw->getHeight(); 2506 GLfloat u = 1; 2507 GLfloat v = 1; 2508 2509 // make sure to clear all GL error flags 2510 while ( glGetError() != GL_NO_ERROR ) ; 2511 2512 // create a FBO 2513 GLuint name, tname; 2514 glGenTextures(1, &tname); 2515 glBindTexture(GL_TEXTURE_2D, tname); 2516 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2517 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2518 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2519 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2520 if (glGetError() != GL_NO_ERROR) { 2521 while ( glGetError() != GL_NO_ERROR ) ; 2522 GLint tw = (2 << (31 - clz(hw_w))); 2523 GLint th = (2 << (31 - clz(hw_h))); 2524 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2525 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2526 u = GLfloat(hw_w) / tw; 2527 v = GLfloat(hw_h) / th; 2528 } 2529 glGenFramebuffersOES(1, &name); 2530 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2531 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2532 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2533 2534 DisplayDevice::setViewportAndProjection(hw); 2535 2536 // redraw the screen entirely... 2537 glDisable(GL_TEXTURE_EXTERNAL_OES); 2538 glDisable(GL_TEXTURE_2D); 2539 glClearColor(0,0,0,1); 2540 glClear(GL_COLOR_BUFFER_BIT); 2541 glMatrixMode(GL_MODELVIEW); 2542 glLoadIdentity(); 2543 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2544 const size_t count = layers.size(); 2545 for (size_t i=0 ; i<count ; ++i) { 2546 const sp<LayerBase>& layer(layers[i]); 2547 layer->draw(hw); 2548 } 2549 2550 hw->compositionComplete(); 2551 2552 // back to main framebuffer 2553 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2554 glDeleteFramebuffersOES(1, &name); 2555 2556 *textureName = tname; 2557 *uOut = u; 2558 *vOut = v; 2559 return NO_ERROR; 2560} 2561 2562// --------------------------------------------------------------------------- 2563 2564status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display, 2565 sp<IMemoryHeap>* heap, 2566 uint32_t* w, uint32_t* h, PixelFormat* f, 2567 uint32_t sw, uint32_t sh, 2568 uint32_t minLayerZ, uint32_t maxLayerZ) 2569{ 2570 ATRACE_CALL(); 2571 2572 status_t result = PERMISSION_DENIED; 2573 2574 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2575 return INVALID_OPERATION; 2576 } 2577 2578 // get screen geometry 2579 sp<const DisplayDevice> hw(getDisplayDevice(display)); 2580 const uint32_t hw_w = hw->getWidth(); 2581 const uint32_t hw_h = hw->getHeight(); 2582 2583 // if we have secure windows on this display, never allow the screen capture 2584 if (hw->getSecureLayerVisible()) { 2585 ALOGW("FB is protected: PERMISSION_DENIED"); 2586 return PERMISSION_DENIED; 2587 } 2588 2589 if ((sw > hw_w) || (sh > hw_h)) { 2590 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2591 return BAD_VALUE; 2592 } 2593 2594 sw = (!sw) ? hw_w : sw; 2595 sh = (!sh) ? hw_h : sh; 2596 const size_t size = sw * sh * 4; 2597 const bool filtering = sw != hw_w || sh != hw_h; 2598 2599// ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2600// sw, sh, minLayerZ, maxLayerZ); 2601 2602 // make sure to clear all GL error flags 2603 while ( glGetError() != GL_NO_ERROR ) ; 2604 2605 // create a FBO 2606 GLuint name, tname; 2607 glGenRenderbuffersOES(1, &tname); 2608 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2609 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2610 2611 glGenFramebuffersOES(1, &name); 2612 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2613 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2614 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2615 2616 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2617 2618 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2619 2620 // invert everything, b/c glReadPixel() below will invert the FB 2621 GLint viewport[4]; 2622 glGetIntegerv(GL_VIEWPORT, viewport); 2623 glViewport(0, 0, sw, sh); 2624 glMatrixMode(GL_PROJECTION); 2625 glPushMatrix(); 2626 glLoadIdentity(); 2627 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2628 glMatrixMode(GL_MODELVIEW); 2629 2630 // redraw the screen entirely... 2631 glClearColor(0,0,0,1); 2632 glClear(GL_COLOR_BUFFER_BIT); 2633 2634 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2635 const size_t count = layers.size(); 2636 for (size_t i=0 ; i<count ; ++i) { 2637 const sp<LayerBase>& layer(layers[i]); 2638 const uint32_t z = layer->drawingState().z; 2639 if (z >= minLayerZ && z <= maxLayerZ) { 2640 if (filtering) layer->setFiltering(true); 2641 layer->draw(hw); 2642 if (filtering) layer->setFiltering(false); 2643 } 2644 } 2645 2646 // check for errors and return screen capture 2647 if (glGetError() != GL_NO_ERROR) { 2648 // error while rendering 2649 result = INVALID_OPERATION; 2650 } else { 2651 // allocate shared memory large enough to hold the 2652 // screen capture 2653 sp<MemoryHeapBase> base( 2654 new MemoryHeapBase(size, 0, "screen-capture") ); 2655 void* const ptr = base->getBase(); 2656 if (ptr != MAP_FAILED) { 2657 // capture the screen with glReadPixels() 2658 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2659 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2660 if (glGetError() == GL_NO_ERROR) { 2661 *heap = base; 2662 *w = sw; 2663 *h = sh; 2664 *f = PIXEL_FORMAT_RGBA_8888; 2665 result = NO_ERROR; 2666 } 2667 } else { 2668 result = NO_MEMORY; 2669 } 2670 } 2671 glViewport(viewport[0], viewport[1], viewport[2], viewport[3]); 2672 glMatrixMode(GL_PROJECTION); 2673 glPopMatrix(); 2674 glMatrixMode(GL_MODELVIEW); 2675 } else { 2676 result = BAD_VALUE; 2677 } 2678 2679 // release FBO resources 2680 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2681 glDeleteRenderbuffersOES(1, &tname); 2682 glDeleteFramebuffersOES(1, &name); 2683 2684 hw->compositionComplete(); 2685 2686// ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2687 2688 return result; 2689} 2690 2691 2692status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2693 sp<IMemoryHeap>* heap, 2694 uint32_t* width, uint32_t* height, PixelFormat* format, 2695 uint32_t sw, uint32_t sh, 2696 uint32_t minLayerZ, uint32_t maxLayerZ) 2697{ 2698 if (CC_UNLIKELY(display == 0)) 2699 return BAD_VALUE; 2700 2701 if (!GLExtensions::getInstance().haveFramebufferObject()) 2702 return INVALID_OPERATION; 2703 2704 class MessageCaptureScreen : public MessageBase { 2705 SurfaceFlinger* flinger; 2706 sp<IBinder> display; 2707 sp<IMemoryHeap>* heap; 2708 uint32_t* w; 2709 uint32_t* h; 2710 PixelFormat* f; 2711 uint32_t sw; 2712 uint32_t sh; 2713 uint32_t minLayerZ; 2714 uint32_t maxLayerZ; 2715 status_t result; 2716 public: 2717 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display, 2718 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2719 uint32_t sw, uint32_t sh, 2720 uint32_t minLayerZ, uint32_t maxLayerZ) 2721 : flinger(flinger), display(display), 2722 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2723 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2724 result(PERMISSION_DENIED) 2725 { 2726 } 2727 status_t getResult() const { 2728 return result; 2729 } 2730 virtual bool handler() { 2731 Mutex::Autolock _l(flinger->mStateLock); 2732 result = flinger->captureScreenImplLocked(display, 2733 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2734 return true; 2735 } 2736 }; 2737 2738 sp<MessageBase> msg = new MessageCaptureScreen(this, 2739 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2740 status_t res = postMessageSync(msg); 2741 if (res == NO_ERROR) { 2742 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2743 } 2744 return res; 2745} 2746 2747// --------------------------------------------------------------------------- 2748 2749SurfaceFlinger::LayerVector::LayerVector() { 2750} 2751 2752SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2753 : SortedVector<sp<LayerBase> >(rhs) { 2754} 2755 2756int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2757 const void* rhs) const 2758{ 2759 // sort layers per layer-stack, then by z-order and finally by sequence 2760 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2761 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2762 2763 uint32_t ls = l->currentState().layerStack; 2764 uint32_t rs = r->currentState().layerStack; 2765 if (ls != rs) 2766 return ls - rs; 2767 2768 uint32_t lz = l->currentState().z; 2769 uint32_t rz = r->currentState().z; 2770 if (lz != rz) 2771 return lz - rz; 2772 2773 return l->sequence - r->sequence; 2774} 2775 2776// --------------------------------------------------------------------------- 2777 2778SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2779 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2780} 2781 2782SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2783 : type(type), layerStack(0), orientation(0) { 2784 viewport.makeInvalid(); 2785 frame.makeInvalid(); 2786} 2787 2788// --------------------------------------------------------------------------- 2789 2790}; // namespace android 2791