SurfaceFlinger.cpp revision c8c71096195de0128e57574b1ddf685838ceb2f0
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 194void SurfaceFlinger::createBuiltinDisplayLocked(DisplayDevice::DisplayType type) { 195 ALOGW_IF(mBuiltinDisplays[type], 196 "Overwriting display token for display type %d", type); 197 mBuiltinDisplays[type] = new BBinder(); 198 DisplayDeviceState info(type); 199 // All non-virtual displays are currently considered secure. 200 info.isSecure = true; 201 mCurrentState.displays.add(mBuiltinDisplays[type], info); 202} 203 204sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 205 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 206 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 207 return NULL; 208 } 209 return mBuiltinDisplays[id]; 210} 211 212sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 213{ 214 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 215 return gba; 216} 217 218void SurfaceFlinger::bootFinished() 219{ 220 const nsecs_t now = systemTime(); 221 const nsecs_t duration = now - mBootTime; 222 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 223 mBootFinished = true; 224 225 // wait patiently for the window manager death 226 const String16 name("window"); 227 sp<IBinder> window(defaultServiceManager()->getService(name)); 228 if (window != 0) { 229 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 230 } 231 232 // stop boot animation 233 // formerly we would just kill the process, but we now ask it to exit so it 234 // can choose where to stop the animation. 235 property_set("service.bootanim.exit", "1"); 236} 237 238void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 239 class MessageDestroyGLTexture : public MessageBase { 240 GLuint texture; 241 public: 242 MessageDestroyGLTexture(GLuint texture) 243 : texture(texture) { 244 } 245 virtual bool handler() { 246 glDeleteTextures(1, &texture); 247 return true; 248 } 249 }; 250 postMessageAsync(new MessageDestroyGLTexture(texture)); 251} 252 253status_t SurfaceFlinger::selectConfigForAttribute( 254 EGLDisplay dpy, 255 EGLint const* attrs, 256 EGLint attribute, EGLint wanted, 257 EGLConfig* outConfig) 258{ 259 EGLConfig config = NULL; 260 EGLint numConfigs = -1, n=0; 261 eglGetConfigs(dpy, NULL, 0, &numConfigs); 262 EGLConfig* const configs = new EGLConfig[numConfigs]; 263 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 264 265 if (n) { 266 if (attribute != EGL_NONE) { 267 for (int i=0 ; i<n ; i++) { 268 EGLint value = 0; 269 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 270 if (wanted == value) { 271 *outConfig = configs[i]; 272 delete [] configs; 273 return NO_ERROR; 274 } 275 } 276 } else { 277 // just pick the first one 278 *outConfig = configs[0]; 279 delete [] configs; 280 return NO_ERROR; 281 } 282 } 283 delete [] configs; 284 return NAME_NOT_FOUND; 285} 286 287class EGLAttributeVector { 288 struct Attribute; 289 class Adder; 290 friend class Adder; 291 KeyedVector<Attribute, EGLint> mList; 292 struct Attribute { 293 Attribute() {}; 294 Attribute(EGLint v) : v(v) { } 295 EGLint v; 296 bool operator < (const Attribute& other) const { 297 // this places EGL_NONE at the end 298 EGLint lhs(v); 299 EGLint rhs(other.v); 300 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 301 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 302 return lhs < rhs; 303 } 304 }; 305 class Adder { 306 friend class EGLAttributeVector; 307 EGLAttributeVector& v; 308 EGLint attribute; 309 Adder(EGLAttributeVector& v, EGLint attribute) 310 : v(v), attribute(attribute) { 311 } 312 public: 313 void operator = (EGLint value) { 314 if (attribute != EGL_NONE) { 315 v.mList.add(attribute, value); 316 } 317 } 318 operator EGLint () const { return v.mList[attribute]; } 319 }; 320public: 321 EGLAttributeVector() { 322 mList.add(EGL_NONE, EGL_NONE); 323 } 324 void remove(EGLint attribute) { 325 if (attribute != EGL_NONE) { 326 mList.removeItem(attribute); 327 } 328 } 329 Adder operator [] (EGLint attribute) { 330 return Adder(*this, attribute); 331 } 332 EGLint operator [] (EGLint attribute) const { 333 return mList[attribute]; 334 } 335 // cast-operator to (EGLint const*) 336 operator EGLint const* () const { return &mList.keyAt(0).v; } 337}; 338 339EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 340 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 341 // it is to be used with WIFI displays 342 EGLConfig config; 343 EGLint dummy; 344 status_t err; 345 346 EGLAttributeVector attribs; 347 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 348 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 349 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 350 attribs[EGL_RED_SIZE] = 8; 351 attribs[EGL_GREEN_SIZE] = 8; 352 attribs[EGL_BLUE_SIZE] = 8; 353 354 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 355 if (!err) 356 goto success; 357 358 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 359 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 360 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 361 err = selectConfigForAttribute(display, attribs, 362 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 363 if (!err) 364 goto success; 365 366 // maybe we failed because of EGL_RECORDABLE_ANDROID 367 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 368 attribs.remove(EGL_RECORDABLE_ANDROID); 369 err = selectConfigForAttribute(display, attribs, 370 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 371 if (!err) 372 goto success; 373 374 // allow less than 24-bit color; the non-gpu-accelerated emulator only 375 // supports 16-bit color 376 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 377 attribs.remove(EGL_RED_SIZE); 378 attribs.remove(EGL_GREEN_SIZE); 379 attribs.remove(EGL_BLUE_SIZE); 380 err = selectConfigForAttribute(display, attribs, 381 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 382 if (!err) 383 goto success; 384 385 // this EGL is too lame for Android 386 ALOGE("no suitable EGLConfig found, giving up"); 387 388 return 0; 389 390success: 391 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 392 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 393 return config; 394} 395 396EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 397 // Also create our EGLContext 398 EGLint contextAttributes[] = { 399#ifdef EGL_IMG_context_priority 400#ifdef HAS_CONTEXT_PRIORITY 401#warning "using EGL_IMG_context_priority" 402 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 403#endif 404#endif 405 EGL_NONE, EGL_NONE 406 }; 407 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 408 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 409 return ctxt; 410} 411 412void SurfaceFlinger::initializeGL(EGLDisplay display) { 413 GLExtensions& extensions(GLExtensions::getInstance()); 414 extensions.initWithGLStrings( 415 glGetString(GL_VENDOR), 416 glGetString(GL_RENDERER), 417 glGetString(GL_VERSION), 418 glGetString(GL_EXTENSIONS), 419 eglQueryString(display, EGL_VENDOR), 420 eglQueryString(display, EGL_VERSION), 421 eglQueryString(display, EGL_EXTENSIONS)); 422 423 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 424 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 425 426 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 427 glPixelStorei(GL_PACK_ALIGNMENT, 4); 428 glEnableClientState(GL_VERTEX_ARRAY); 429 glShadeModel(GL_FLAT); 430 glDisable(GL_DITHER); 431 glDisable(GL_CULL_FACE); 432 433 struct pack565 { 434 inline uint16_t operator() (int r, int g, int b) const { 435 return (r<<11)|(g<<5)|b; 436 } 437 } pack565; 438 439 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 440 glGenTextures(1, &mProtectedTexName); 441 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 442 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 443 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 444 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 445 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 446 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 447 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 448 449 // print some debugging info 450 EGLint r,g,b,a; 451 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 452 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 453 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 454 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 455 ALOGI("EGL informations:"); 456 ALOGI("vendor : %s", extensions.getEglVendor()); 457 ALOGI("version : %s", extensions.getEglVersion()); 458 ALOGI("extensions: %s", extensions.getEglExtension()); 459 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 460 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 461 ALOGI("OpenGL ES informations:"); 462 ALOGI("vendor : %s", extensions.getVendor()); 463 ALOGI("renderer : %s", extensions.getRenderer()); 464 ALOGI("version : %s", extensions.getVersion()); 465 ALOGI("extensions: %s", extensions.getExtension()); 466 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 467 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 468} 469 470status_t SurfaceFlinger::readyToRun() 471{ 472 ALOGI( "SurfaceFlinger's main thread ready to run. " 473 "Initializing graphics H/W..."); 474 475 Mutex::Autolock _l(mStateLock); 476 477 // initialize EGL for the default display 478 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 479 eglInitialize(mEGLDisplay, NULL, NULL); 480 481 // Initialize the H/W composer object. There may or may not be an 482 // actual hardware composer underneath. 483 mHwc = new HWComposer(this, 484 *static_cast<HWComposer::EventHandler *>(this)); 485 486 // initialize the config and context 487 EGLint format = mHwc->getVisualID(); 488 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 489 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 490 491 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 492 "couldn't create EGLContext"); 493 494 // initialize our non-virtual displays 495 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 496 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 497 // set-up the displays that are already connected 498 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 499 // All non-virtual displays are currently considered secure. 500 bool isSecure = true; 501 createBuiltinDisplayLocked(type); 502 wp<IBinder> token = mBuiltinDisplays[i]; 503 504 sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc, i); 505 sp<SurfaceTextureClient> stc = new SurfaceTextureClient( 506 static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue())); 507 sp<DisplayDevice> hw = new DisplayDevice(this, 508 type, isSecure, token, stc, fbs, mEGLConfig); 509 if (i > DisplayDevice::DISPLAY_PRIMARY) { 510 // FIXME: currently we don't get blank/unblank requests 511 // for displays other than the main display, so we always 512 // assume a connected display is unblanked. 513 ALOGD("marking display %d as acquired/unblanked", i); 514 hw->acquireScreen(); 515 } 516 mDisplays.add(token, hw); 517 } 518 } 519 520 // we need a GL context current in a few places, when initializing 521 // OpenGL ES (see below), or creating a layer, 522 // or when a texture is (asynchronously) destroyed, and for that 523 // we need a valid surface, so it's convenient to use the main display 524 // for that. 525 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 526 527 // initialize OpenGL ES 528 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 529 initializeGL(mEGLDisplay); 530 531 // start the EventThread 532 mEventThread = new EventThread(this); 533 mEventQueue.setEventThread(mEventThread); 534 535 // initialize our drawing state 536 mDrawingState = mCurrentState; 537 538 539 // We're now ready to accept clients... 540 mReadyToRunBarrier.open(); 541 542 // set initial conditions (e.g. unblank default device) 543 initializeDisplays(); 544 545 // start boot animation 546 startBootAnim(); 547 548 return NO_ERROR; 549} 550 551int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 552 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 553 type : mHwc->allocateDisplayId(); 554} 555 556void SurfaceFlinger::startBootAnim() { 557 // start boot animation 558 property_set("service.bootanim.exit", "0"); 559 property_set("ctl.start", "bootanim"); 560} 561 562uint32_t SurfaceFlinger::getMaxTextureSize() const { 563 return mMaxTextureSize; 564} 565 566uint32_t SurfaceFlinger::getMaxViewportDims() const { 567 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 568 mMaxViewportDims[0] : mMaxViewportDims[1]; 569} 570 571// ---------------------------------------------------------------------------- 572 573bool SurfaceFlinger::authenticateSurfaceTexture( 574 const sp<ISurfaceTexture>& surfaceTexture) const { 575 Mutex::Autolock _l(mStateLock); 576 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 577 578 // Check the visible layer list for the ISurface 579 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 580 size_t count = currentLayers.size(); 581 for (size_t i=0 ; i<count ; i++) { 582 const sp<LayerBase>& layer(currentLayers[i]); 583 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 584 if (lbc != NULL) { 585 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 586 if (lbcBinder == surfaceTextureBinder) { 587 return true; 588 } 589 } 590 } 591 592 // Check the layers in the purgatory. This check is here so that if a 593 // SurfaceTexture gets destroyed before all the clients are done using it, 594 // the error will not be reported as "surface XYZ is not authenticated", but 595 // will instead fail later on when the client tries to use the surface, 596 // which should be reported as "surface XYZ returned an -ENODEV". The 597 // purgatorized layers are no less authentic than the visible ones, so this 598 // should not cause any harm. 599 size_t purgatorySize = mLayerPurgatory.size(); 600 for (size_t i=0 ; i<purgatorySize ; i++) { 601 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 602 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 603 if (lbc != NULL) { 604 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 605 if (lbcBinder == surfaceTextureBinder) { 606 return true; 607 } 608 } 609 } 610 611 return false; 612} 613 614status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 615 int32_t type = NAME_NOT_FOUND; 616 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 617 if (display == mBuiltinDisplays[i]) { 618 type = i; 619 break; 620 } 621 } 622 623 if (type < 0) { 624 return type; 625 } 626 627 const HWComposer& hwc(getHwComposer()); 628 float xdpi = hwc.getDpiX(type); 629 float ydpi = hwc.getDpiY(type); 630 631 // TODO: Not sure if display density should handled by SF any longer 632 class Density { 633 static int getDensityFromProperty(char const* propName) { 634 char property[PROPERTY_VALUE_MAX]; 635 int density = 0; 636 if (property_get(propName, property, NULL) > 0) { 637 density = atoi(property); 638 } 639 return density; 640 } 641 public: 642 static int getEmuDensity() { 643 return getDensityFromProperty("qemu.sf.lcd_density"); } 644 static int getBuildDensity() { 645 return getDensityFromProperty("ro.sf.lcd_density"); } 646 }; 647 648 if (type == DisplayDevice::DISPLAY_PRIMARY) { 649 // The density of the device is provided by a build property 650 float density = Density::getBuildDensity() / 160.0f; 651 if (density == 0) { 652 // the build doesn't provide a density -- this is wrong! 653 // use xdpi instead 654 ALOGE("ro.sf.lcd_density must be defined as a build property"); 655 density = xdpi / 160.0f; 656 } 657 if (Density::getEmuDensity()) { 658 // if "qemu.sf.lcd_density" is specified, it overrides everything 659 xdpi = ydpi = density = Density::getEmuDensity(); 660 density /= 160.0f; 661 } 662 info->density = density; 663 664 // TODO: this needs to go away (currently needed only by webkit) 665 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 666 info->orientation = hw->getOrientation(); 667 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 668 } else { 669 // TODO: where should this value come from? 670 static const int TV_DENSITY = 213; 671 info->density = TV_DENSITY / 160.0f; 672 info->orientation = 0; 673 } 674 675 info->w = hwc.getWidth(type); 676 info->h = hwc.getHeight(type); 677 info->xdpi = xdpi; 678 info->ydpi = ydpi; 679 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 680 681 // All non-virtual displays are currently considered secure. 682 info->secure = true; 683 684 return NO_ERROR; 685} 686 687// ---------------------------------------------------------------------------- 688 689sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 690 return mEventThread->createEventConnection(); 691} 692 693// ---------------------------------------------------------------------------- 694 695void SurfaceFlinger::waitForEvent() { 696 mEventQueue.waitMessage(); 697} 698 699void SurfaceFlinger::signalTransaction() { 700 mEventQueue.invalidate(); 701} 702 703void SurfaceFlinger::signalLayerUpdate() { 704 mEventQueue.invalidate(); 705} 706 707void SurfaceFlinger::signalRefresh() { 708 mEventQueue.refresh(); 709} 710 711status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 712 nsecs_t reltime, uint32_t flags) { 713 return mEventQueue.postMessage(msg, reltime); 714} 715 716status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 717 nsecs_t reltime, uint32_t flags) { 718 status_t res = mEventQueue.postMessage(msg, reltime); 719 if (res == NO_ERROR) { 720 msg->wait(); 721 } 722 return res; 723} 724 725bool SurfaceFlinger::threadLoop() { 726 waitForEvent(); 727 return true; 728} 729 730void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 731 if (mEventThread == NULL) { 732 // This is a temporary workaround for b/7145521. A non-null pointer 733 // does not mean EventThread has finished initializing, so this 734 // is not a correct fix. 735 ALOGW("WARNING: EventThread not started, ignoring vsync"); 736 return; 737 } 738 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 739 // we should only receive DisplayDevice::DisplayType from the vsync callback 740 mEventThread->onVSyncReceived(type, timestamp); 741 } 742} 743 744void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 745 if (mEventThread == NULL) { 746 // This is a temporary workaround for b/7145521. A non-null pointer 747 // does not mean EventThread has finished initializing, so this 748 // is not a correct fix. 749 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 750 return; 751 } 752 753 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 754 Mutex::Autolock _l(mStateLock); 755 if (connected) { 756 createBuiltinDisplayLocked((DisplayDevice::DisplayType)type); 757 } else { 758 mCurrentState.displays.removeItem(mBuiltinDisplays[type]); 759 mBuiltinDisplays[type].clear(); 760 } 761 setTransactionFlags(eDisplayTransactionNeeded); 762 763 // Defer EventThread notification until SF has updated mDisplays. 764 } 765} 766 767void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 768 getHwComposer().eventControl(disp, event, enabled); 769} 770 771void SurfaceFlinger::onMessageReceived(int32_t what) { 772 ATRACE_CALL(); 773 switch (what) { 774 case MessageQueue::INVALIDATE: 775 handleMessageTransaction(); 776 handleMessageInvalidate(); 777 signalRefresh(); 778 break; 779 case MessageQueue::REFRESH: 780 handleMessageRefresh(); 781 break; 782 } 783} 784 785void SurfaceFlinger::handleMessageTransaction() { 786 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 787 if (transactionFlags) { 788 handleTransaction(transactionFlags); 789 } 790} 791 792void SurfaceFlinger::handleMessageInvalidate() { 793 ATRACE_CALL(); 794 handlePageFlip(); 795} 796 797void SurfaceFlinger::handleMessageRefresh() { 798 ATRACE_CALL(); 799 preComposition(); 800 rebuildLayerStacks(); 801 setUpHWComposer(); 802 doDebugFlashRegions(); 803 doComposition(); 804 postComposition(); 805} 806 807void SurfaceFlinger::doDebugFlashRegions() 808{ 809 // is debugging enabled 810 if (CC_LIKELY(!mDebugRegion)) 811 return; 812 813 const bool repaintEverything = mRepaintEverything; 814 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 815 const sp<DisplayDevice>& hw(mDisplays[dpy]); 816 if (hw->canDraw()) { 817 // transform the dirty region into this screen's coordinate space 818 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 819 if (!dirtyRegion.isEmpty()) { 820 // redraw the whole screen 821 doComposeSurfaces(hw, Region(hw->bounds())); 822 823 // and draw the dirty region 824 glDisable(GL_TEXTURE_EXTERNAL_OES); 825 glDisable(GL_TEXTURE_2D); 826 glDisable(GL_BLEND); 827 glColor4f(1, 0, 1, 1); 828 const int32_t height = hw->getHeight(); 829 Region::const_iterator it = dirtyRegion.begin(); 830 Region::const_iterator const end = dirtyRegion.end(); 831 while (it != end) { 832 const Rect& r = *it++; 833 GLfloat vertices[][2] = { 834 { r.left, height - r.top }, 835 { r.left, height - r.bottom }, 836 { r.right, height - r.bottom }, 837 { r.right, height - r.top } 838 }; 839 glVertexPointer(2, GL_FLOAT, 0, vertices); 840 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 841 } 842 hw->compositionComplete(); 843 hw->swapBuffers(getHwComposer()); 844 } 845 } 846 } 847 848 postFramebuffer(); 849 850 if (mDebugRegion > 1) { 851 usleep(mDebugRegion * 1000); 852 } 853 854 HWComposer& hwc(getHwComposer()); 855 if (hwc.initCheck() == NO_ERROR) { 856 status_t err = hwc.prepare(); 857 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 858 } 859} 860 861void SurfaceFlinger::preComposition() 862{ 863 bool needExtraInvalidate = false; 864 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 865 const size_t count = currentLayers.size(); 866 for (size_t i=0 ; i<count ; i++) { 867 if (currentLayers[i]->onPreComposition()) { 868 needExtraInvalidate = true; 869 } 870 } 871 if (needExtraInvalidate) { 872 signalLayerUpdate(); 873 } 874} 875 876void SurfaceFlinger::postComposition() 877{ 878 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 879 const size_t count = currentLayers.size(); 880 for (size_t i=0 ; i<count ; i++) { 881 currentLayers[i]->onPostComposition(); 882 } 883} 884 885void SurfaceFlinger::rebuildLayerStacks() { 886 // rebuild the visible layer list per screen 887 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 888 ATRACE_CALL(); 889 mVisibleRegionsDirty = false; 890 invalidateHwcGeometry(); 891 892 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 893 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 894 Region opaqueRegion; 895 Region dirtyRegion; 896 Vector< sp<LayerBase> > layersSortedByZ; 897 const sp<DisplayDevice>& hw(mDisplays[dpy]); 898 const Transform& tr(hw->getTransform()); 899 const Rect bounds(hw->getBounds()); 900 if (hw->canDraw()) { 901 SurfaceFlinger::computeVisibleRegions(currentLayers, 902 hw->getLayerStack(), dirtyRegion, opaqueRegion); 903 904 const size_t count = currentLayers.size(); 905 for (size_t i=0 ; i<count ; i++) { 906 const sp<LayerBase>& layer(currentLayers[i]); 907 const Layer::State& s(layer->drawingState()); 908 if (s.layerStack == hw->getLayerStack()) { 909 Region drawRegion(tr.transform( 910 layer->visibleNonTransparentRegion)); 911 drawRegion.andSelf(bounds); 912 if (!drawRegion.isEmpty()) { 913 layersSortedByZ.add(layer); 914 } 915 } 916 } 917 } 918 hw->setVisibleLayersSortedByZ(layersSortedByZ); 919 hw->undefinedRegion.set(bounds); 920 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 921 hw->dirtyRegion.orSelf(dirtyRegion); 922 } 923 } 924} 925 926void SurfaceFlinger::setUpHWComposer() { 927 HWComposer& hwc(getHwComposer()); 928 if (hwc.initCheck() == NO_ERROR) { 929 // build the h/w work list 930 if (CC_UNLIKELY(mHwWorkListDirty)) { 931 mHwWorkListDirty = false; 932 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 933 sp<const DisplayDevice> hw(mDisplays[dpy]); 934 const int32_t id = hw->getHwcDisplayId(); 935 if (id >= 0) { 936 const Vector< sp<LayerBase> >& currentLayers( 937 hw->getVisibleLayersSortedByZ()); 938 const size_t count = currentLayers.size(); 939 if (hwc.createWorkList(id, count) == NO_ERROR) { 940 HWComposer::LayerListIterator cur = hwc.begin(id); 941 const HWComposer::LayerListIterator end = hwc.end(id); 942 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 943 const sp<LayerBase>& layer(currentLayers[i]); 944 layer->setGeometry(hw, *cur); 945 if (mDebugDisableHWC || mDebugRegion) { 946 cur->setSkip(true); 947 } 948 } 949 } 950 } 951 } 952 } 953 954 // set the per-frame data 955 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 956 sp<const DisplayDevice> hw(mDisplays[dpy]); 957 const int32_t id = hw->getHwcDisplayId(); 958 if (id >= 0) { 959 const Vector< sp<LayerBase> >& currentLayers( 960 hw->getVisibleLayersSortedByZ()); 961 const size_t count = currentLayers.size(); 962 HWComposer::LayerListIterator cur = hwc.begin(id); 963 const HWComposer::LayerListIterator end = hwc.end(id); 964 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 965 /* 966 * update the per-frame h/w composer data for each layer 967 * and build the transparent region of the FB 968 */ 969 const sp<LayerBase>& layer(currentLayers[i]); 970 layer->setPerFrameData(hw, *cur); 971 } 972 } 973 } 974 975 status_t err = hwc.prepare(); 976 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 977 } 978} 979 980void SurfaceFlinger::doComposition() { 981 ATRACE_CALL(); 982 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 983 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 984 const sp<DisplayDevice>& hw(mDisplays[dpy]); 985 if (hw->canDraw()) { 986 // transform the dirty region into this screen's coordinate space 987 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 988 989 // repaint the framebuffer (if needed) 990 doDisplayComposition(hw, dirtyRegion); 991 992 hw->dirtyRegion.clear(); 993 hw->flip(hw->swapRegion); 994 hw->swapRegion.clear(); 995 } 996 // inform the h/w that we're done compositing 997 hw->compositionComplete(); 998 } 999 postFramebuffer(); 1000} 1001 1002void SurfaceFlinger::postFramebuffer() 1003{ 1004 ATRACE_CALL(); 1005 1006 const nsecs_t now = systemTime(); 1007 mDebugInSwapBuffers = now; 1008 1009 HWComposer& hwc(getHwComposer()); 1010 if (hwc.initCheck() == NO_ERROR) { 1011 if (!hwc.supportsFramebufferTarget()) { 1012 // EGL spec says: 1013 // "surface must be bound to the calling thread's current context, 1014 // for the current rendering API." 1015 DisplayDevice::makeCurrent(mEGLDisplay, 1016 getDefaultDisplayDevice(), mEGLContext); 1017 } 1018 hwc.commit(); 1019 } 1020 1021 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1022 sp<const DisplayDevice> hw(mDisplays[dpy]); 1023 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1024 hw->onSwapBuffersCompleted(hwc); 1025 const size_t count = currentLayers.size(); 1026 int32_t id = hw->getHwcDisplayId(); 1027 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1028 HWComposer::LayerListIterator cur = hwc.begin(id); 1029 const HWComposer::LayerListIterator end = hwc.end(id); 1030 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1031 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1032 } 1033 } else { 1034 for (size_t i = 0; i < count; i++) { 1035 currentLayers[i]->onLayerDisplayed(hw, NULL); 1036 } 1037 } 1038 } 1039 1040 mLastSwapBufferTime = systemTime() - now; 1041 mDebugInSwapBuffers = 0; 1042} 1043 1044void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1045{ 1046 ATRACE_CALL(); 1047 1048 Mutex::Autolock _l(mStateLock); 1049 const nsecs_t now = systemTime(); 1050 mDebugInTransaction = now; 1051 1052 // Here we're guaranteed that some transaction flags are set 1053 // so we can call handleTransactionLocked() unconditionally. 1054 // We call getTransactionFlags(), which will also clear the flags, 1055 // with mStateLock held to guarantee that mCurrentState won't change 1056 // until the transaction is committed. 1057 1058 transactionFlags = getTransactionFlags(eTransactionMask); 1059 handleTransactionLocked(transactionFlags); 1060 1061 mLastTransactionTime = systemTime() - now; 1062 mDebugInTransaction = 0; 1063 invalidateHwcGeometry(); 1064 // here the transaction has been committed 1065} 1066 1067void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1068{ 1069 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1070 const size_t count = currentLayers.size(); 1071 1072 /* 1073 * Traversal of the children 1074 * (perform the transaction for each of them if needed) 1075 */ 1076 1077 if (transactionFlags & eTraversalNeeded) { 1078 for (size_t i=0 ; i<count ; i++) { 1079 const sp<LayerBase>& layer(currentLayers[i]); 1080 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1081 if (!trFlags) continue; 1082 1083 const uint32_t flags = layer->doTransaction(0); 1084 if (flags & Layer::eVisibleRegion) 1085 mVisibleRegionsDirty = true; 1086 } 1087 } 1088 1089 /* 1090 * Perform display own transactions if needed 1091 */ 1092 1093 if (transactionFlags & eDisplayTransactionNeeded) { 1094 // here we take advantage of Vector's copy-on-write semantics to 1095 // improve performance by skipping the transaction entirely when 1096 // know that the lists are identical 1097 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1098 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1099 if (!curr.isIdenticalTo(draw)) { 1100 mVisibleRegionsDirty = true; 1101 const size_t cc = curr.size(); 1102 size_t dc = draw.size(); 1103 1104 // find the displays that were removed 1105 // (ie: in drawing state but not in current state) 1106 // also handle displays that changed 1107 // (ie: displays that are in both lists) 1108 for (size_t i=0 ; i<dc ; i++) { 1109 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1110 if (j < 0) { 1111 // in drawing state but not in current state 1112 if (!draw[i].isMainDisplay()) { 1113 // Call makeCurrent() on the primary display so we can 1114 // be sure that nothing associated with this display 1115 // is current. 1116 const sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 1117 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1118 mDisplays.removeItem(draw.keyAt(i)); 1119 getHwComposer().disconnectDisplay(draw[i].type); 1120 mEventThread->onHotplugReceived(draw[i].type, false); 1121 } else { 1122 ALOGW("trying to remove the main display"); 1123 } 1124 } else { 1125 // this display is in both lists. see if something changed. 1126 const DisplayDeviceState& state(curr[j]); 1127 const wp<IBinder>& display(curr.keyAt(j)); 1128 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1129 // changing the surface is like destroying and 1130 // recreating the DisplayDevice, so we just remove it 1131 // from the drawing state, so that it get re-added 1132 // below. 1133 mDisplays.removeItem(display); 1134 mDrawingState.displays.removeItemsAt(i); 1135 dc--; i--; 1136 // at this point we must loop to the next item 1137 continue; 1138 } 1139 1140 const sp<DisplayDevice> disp(getDisplayDevice(display)); 1141 if (disp != NULL) { 1142 if (state.layerStack != draw[i].layerStack) { 1143 disp->setLayerStack(state.layerStack); 1144 } 1145 if ((state.orientation != draw[i].orientation) 1146 || (state.viewport != draw[i].viewport) 1147 || (state.frame != draw[i].frame)) 1148 { 1149 disp->setProjection(state.orientation, 1150 state.viewport, state.frame); 1151 } 1152 } 1153 } 1154 } 1155 1156 // find displays that were added 1157 // (ie: in current state but not in drawing state) 1158 for (size_t i=0 ; i<cc ; i++) { 1159 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1160 const DisplayDeviceState& state(curr[i]); 1161 1162 sp<FramebufferSurface> fbs; 1163 sp<SurfaceTextureClient> stc; 1164 if (!state.isVirtualDisplay()) { 1165 1166 ALOGE_IF(state.surface!=NULL, 1167 "adding a supported display, but rendering " 1168 "surface is provided (%p), ignoring it", 1169 state.surface.get()); 1170 1171 // for supported (by hwc) displays we provide our 1172 // own rendering surface 1173 fbs = new FramebufferSurface(*mHwc, state.type); 1174 stc = new SurfaceTextureClient( 1175 static_cast< sp<ISurfaceTexture> >( 1176 fbs->getBufferQueue())); 1177 } else { 1178 if (state.surface != NULL) { 1179 stc = new SurfaceTextureClient(state.surface); 1180 } 1181 } 1182 1183 const wp<IBinder>& display(curr.keyAt(i)); 1184 if (stc != NULL) { 1185 sp<DisplayDevice> hw = new DisplayDevice(this, 1186 state.type, state.isSecure, display, stc, fbs, 1187 mEGLConfig); 1188 hw->setLayerStack(state.layerStack); 1189 hw->setProjection(state.orientation, 1190 state.viewport, state.frame); 1191 hw->setDisplayName(state.displayName); 1192 mDisplays.add(display, hw); 1193 mEventThread->onHotplugReceived(state.type, true); 1194 } 1195 } 1196 } 1197 } 1198 } 1199 1200 if (transactionFlags & (eTraversalNeeded|eDisplayTransactionNeeded)) { 1201 // The transform hint might have changed for some layers 1202 // (either because a display has changed, or because a layer 1203 // as changed). 1204 // 1205 // Walk through all the layers in currentLayers, 1206 // and update their transform hint. 1207 // 1208 // If a layer is visible only on a single display, then that 1209 // display is used to calculate the hint, otherwise we use the 1210 // default display. 1211 // 1212 // NOTE: we do this here, rather than in rebuildLayerStacks() so that 1213 // the hint is set before we acquire a buffer from the surface texture. 1214 // 1215 // NOTE: layer transactions have taken place already, so we use their 1216 // drawing state. However, SurfaceFlinger's own transaction has not 1217 // happened yet, so we must use the current state layer list 1218 // (soon to become the drawing state list). 1219 // 1220 sp<const DisplayDevice> disp; 1221 uint32_t currentlayerStack = 0; 1222 for (size_t i=0; i<count; i++) { 1223 // NOTE: we rely on the fact that layers are sorted by 1224 // layerStack first (so we don't have to traverse the list 1225 // of displays for every layer). 1226 const sp<LayerBase>& layerBase(currentLayers[i]); 1227 uint32_t layerStack = layerBase->drawingState().layerStack; 1228 if (i==0 || currentlayerStack != layerStack) { 1229 currentlayerStack = layerStack; 1230 // figure out if this layerstack is mirrored 1231 // (more than one display) if so, pick the default display, 1232 // if not, pick the only display it's on. 1233 disp.clear(); 1234 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1235 sp<const DisplayDevice> hw(mDisplays[dpy]); 1236 if (hw->getLayerStack() == currentlayerStack) { 1237 if (disp == NULL) { 1238 disp = hw; 1239 } else { 1240 disp = getDefaultDisplayDevice(); 1241 break; 1242 } 1243 } 1244 } 1245 } 1246 if (disp != NULL) { 1247 // presumably this means this layer is using a layerStack 1248 // that is not visible on any display 1249 layerBase->updateTransformHint(disp); 1250 } 1251 } 1252 } 1253 1254 1255 /* 1256 * Perform our own transaction if needed 1257 */ 1258 1259 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1260 if (currentLayers.size() > previousLayers.size()) { 1261 // layers have been added 1262 mVisibleRegionsDirty = true; 1263 } 1264 1265 // some layers might have been removed, so 1266 // we need to update the regions they're exposing. 1267 if (mLayersRemoved) { 1268 mLayersRemoved = false; 1269 mVisibleRegionsDirty = true; 1270 const size_t count = previousLayers.size(); 1271 for (size_t i=0 ; i<count ; i++) { 1272 const sp<LayerBase>& layer(previousLayers[i]); 1273 if (currentLayers.indexOf(layer) < 0) { 1274 // this layer is not visible anymore 1275 // TODO: we could traverse the tree from front to back and 1276 // compute the actual visible region 1277 // TODO: we could cache the transformed region 1278 const Layer::State& s(layer->drawingState()); 1279 Region visibleReg = s.transform.transform( 1280 Region(Rect(s.active.w, s.active.h))); 1281 invalidateLayerStack(s.layerStack, visibleReg); 1282 } 1283 } 1284 } 1285 1286 commitTransaction(); 1287} 1288 1289void SurfaceFlinger::commitTransaction() 1290{ 1291 if (!mLayersPendingRemoval.isEmpty()) { 1292 // Notify removed layers now that they can't be drawn from 1293 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1294 mLayersPendingRemoval[i]->onRemoved(); 1295 } 1296 mLayersPendingRemoval.clear(); 1297 } 1298 1299 mDrawingState = mCurrentState; 1300 mTransactionPending = false; 1301 mAnimTransactionPending = false; 1302 mTransactionCV.broadcast(); 1303} 1304 1305void SurfaceFlinger::computeVisibleRegions( 1306 const LayerVector& currentLayers, uint32_t layerStack, 1307 Region& outDirtyRegion, Region& outOpaqueRegion) 1308{ 1309 ATRACE_CALL(); 1310 1311 Region aboveOpaqueLayers; 1312 Region aboveCoveredLayers; 1313 Region dirty; 1314 1315 outDirtyRegion.clear(); 1316 1317 size_t i = currentLayers.size(); 1318 while (i--) { 1319 const sp<LayerBase>& layer = currentLayers[i]; 1320 1321 // start with the whole surface at its current location 1322 const Layer::State& s(layer->drawingState()); 1323 1324 // only consider the layers on the given later stack 1325 if (s.layerStack != layerStack) 1326 continue; 1327 1328 /* 1329 * opaqueRegion: area of a surface that is fully opaque. 1330 */ 1331 Region opaqueRegion; 1332 1333 /* 1334 * visibleRegion: area of a surface that is visible on screen 1335 * and not fully transparent. This is essentially the layer's 1336 * footprint minus the opaque regions above it. 1337 * Areas covered by a translucent surface are considered visible. 1338 */ 1339 Region visibleRegion; 1340 1341 /* 1342 * coveredRegion: area of a surface that is covered by all 1343 * visible regions above it (which includes the translucent areas). 1344 */ 1345 Region coveredRegion; 1346 1347 /* 1348 * transparentRegion: area of a surface that is hinted to be completely 1349 * transparent. This is only used to tell when the layer has no visible 1350 * non-transparent regions and can be removed from the layer list. It 1351 * does not affect the visibleRegion of this layer or any layers 1352 * beneath it. The hint may not be correct if apps don't respect the 1353 * SurfaceView restrictions (which, sadly, some don't). 1354 */ 1355 Region transparentRegion; 1356 1357 1358 // handle hidden surfaces by setting the visible region to empty 1359 if (CC_LIKELY(layer->isVisible())) { 1360 const bool translucent = !layer->isOpaque(); 1361 Rect bounds(layer->computeBounds()); 1362 visibleRegion.set(bounds); 1363 if (!visibleRegion.isEmpty()) { 1364 // Remove the transparent area from the visible region 1365 if (translucent) { 1366 const Transform tr(s.transform); 1367 if (tr.transformed()) { 1368 if (tr.preserveRects()) { 1369 // transform the transparent region 1370 transparentRegion = tr.transform(s.transparentRegion); 1371 } else { 1372 // transformation too complex, can't do the 1373 // transparent region optimization. 1374 transparentRegion.clear(); 1375 } 1376 } else { 1377 transparentRegion = s.transparentRegion; 1378 } 1379 } 1380 1381 // compute the opaque region 1382 const int32_t layerOrientation = s.transform.getOrientation(); 1383 if (s.alpha==255 && !translucent && 1384 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1385 // the opaque region is the layer's footprint 1386 opaqueRegion = visibleRegion; 1387 } 1388 } 1389 } 1390 1391 // Clip the covered region to the visible region 1392 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1393 1394 // Update aboveCoveredLayers for next (lower) layer 1395 aboveCoveredLayers.orSelf(visibleRegion); 1396 1397 // subtract the opaque region covered by the layers above us 1398 visibleRegion.subtractSelf(aboveOpaqueLayers); 1399 1400 // compute this layer's dirty region 1401 if (layer->contentDirty) { 1402 // we need to invalidate the whole region 1403 dirty = visibleRegion; 1404 // as well, as the old visible region 1405 dirty.orSelf(layer->visibleRegion); 1406 layer->contentDirty = false; 1407 } else { 1408 /* compute the exposed region: 1409 * the exposed region consists of two components: 1410 * 1) what's VISIBLE now and was COVERED before 1411 * 2) what's EXPOSED now less what was EXPOSED before 1412 * 1413 * note that (1) is conservative, we start with the whole 1414 * visible region but only keep what used to be covered by 1415 * something -- which mean it may have been exposed. 1416 * 1417 * (2) handles areas that were not covered by anything but got 1418 * exposed because of a resize. 1419 */ 1420 const Region newExposed = visibleRegion - coveredRegion; 1421 const Region oldVisibleRegion = layer->visibleRegion; 1422 const Region oldCoveredRegion = layer->coveredRegion; 1423 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1424 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1425 } 1426 dirty.subtractSelf(aboveOpaqueLayers); 1427 1428 // accumulate to the screen dirty region 1429 outDirtyRegion.orSelf(dirty); 1430 1431 // Update aboveOpaqueLayers for next (lower) layer 1432 aboveOpaqueLayers.orSelf(opaqueRegion); 1433 1434 // Store the visible region in screen space 1435 layer->setVisibleRegion(visibleRegion); 1436 layer->setCoveredRegion(coveredRegion); 1437 layer->setVisibleNonTransparentRegion( 1438 visibleRegion.subtract(transparentRegion)); 1439 } 1440 1441 outOpaqueRegion = aboveOpaqueLayers; 1442} 1443 1444void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1445 const Region& dirty) { 1446 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1447 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1448 if (hw->getLayerStack() == layerStack) { 1449 hw->dirtyRegion.orSelf(dirty); 1450 } 1451 } 1452} 1453 1454void SurfaceFlinger::handlePageFlip() 1455{ 1456 Region dirtyRegion; 1457 1458 bool visibleRegions = false; 1459 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1460 const size_t count = currentLayers.size(); 1461 for (size_t i=0 ; i<count ; i++) { 1462 const sp<LayerBase>& layer(currentLayers[i]); 1463 const Region dirty(layer->latchBuffer(visibleRegions)); 1464 const Layer::State& s(layer->drawingState()); 1465 invalidateLayerStack(s.layerStack, dirty); 1466 } 1467 1468 mVisibleRegionsDirty |= visibleRegions; 1469} 1470 1471void SurfaceFlinger::invalidateHwcGeometry() 1472{ 1473 mHwWorkListDirty = true; 1474} 1475 1476 1477void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1478 const Region& inDirtyRegion) 1479{ 1480 Region dirtyRegion(inDirtyRegion); 1481 1482 // compute the invalid region 1483 hw->swapRegion.orSelf(dirtyRegion); 1484 1485 uint32_t flags = hw->getFlags(); 1486 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1487 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1488 // takes a rectangle, we must make sure to update that whole 1489 // rectangle in that case 1490 dirtyRegion.set(hw->swapRegion.bounds()); 1491 } else { 1492 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1493 // We need to redraw the rectangle that will be updated 1494 // (pushed to the framebuffer). 1495 // This is needed because PARTIAL_UPDATES only takes one 1496 // rectangle instead of a region (see DisplayDevice::flip()) 1497 dirtyRegion.set(hw->swapRegion.bounds()); 1498 } else { 1499 // we need to redraw everything (the whole screen) 1500 dirtyRegion.set(hw->bounds()); 1501 hw->swapRegion = dirtyRegion; 1502 } 1503 } 1504 1505 doComposeSurfaces(hw, dirtyRegion); 1506 1507 // update the swap region and clear the dirty region 1508 hw->swapRegion.orSelf(dirtyRegion); 1509 1510 // swap buffers (presentation) 1511 hw->swapBuffers(getHwComposer()); 1512} 1513 1514void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1515{ 1516 const int32_t id = hw->getHwcDisplayId(); 1517 HWComposer& hwc(getHwComposer()); 1518 HWComposer::LayerListIterator cur = hwc.begin(id); 1519 const HWComposer::LayerListIterator end = hwc.end(id); 1520 1521 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1522 if (hasGlesComposition) { 1523 if (!DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext)) { 1524 ALOGW("DisplayDevice::makeCurrent failed. Aborting surface composition for display %s", 1525 hw->getDisplayName().string()); 1526 return; 1527 } 1528 1529 // set the frame buffer 1530 glMatrixMode(GL_MODELVIEW); 1531 glLoadIdentity(); 1532 1533 // Never touch the framebuffer if we don't have any framebuffer layers 1534 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1535 if (hasHwcComposition) { 1536 // when using overlays, we assume a fully transparent framebuffer 1537 // NOTE: we could reduce how much we need to clear, for instance 1538 // remove where there are opaque FB layers. however, on some 1539 // GPUs doing a "clean slate" glClear might be more efficient. 1540 // We'll revisit later if needed. 1541 glClearColor(0, 0, 0, 0); 1542 glClear(GL_COLOR_BUFFER_BIT); 1543 } else { 1544 const Region region(hw->undefinedRegion.intersect(dirty)); 1545 // screen is already cleared here 1546 if (!region.isEmpty()) { 1547 // can happen with SurfaceView 1548 drawWormhole(hw, region); 1549 } 1550 } 1551 1552 if (hw->getDisplayType() >= DisplayDevice::DISPLAY_EXTERNAL) { 1553 // TODO: just to be on the safe side, we don't set the 1554 // scissor on the main display. It should never be needed 1555 // anyways (though in theory it could since the API allows it). 1556 const Rect& bounds(hw->getBounds()); 1557 const Transform& tr(hw->getTransform()); 1558 const Rect scissor(tr.transform(hw->getViewport())); 1559 if (scissor != bounds) { 1560 // scissor doesn't match the screen's dimensions, so we 1561 // need to clear everything outside of it and enable 1562 // the GL scissor so we don't draw anything where we shouldn't 1563 const GLint height = hw->getHeight(); 1564 glScissor(scissor.left, height - scissor.bottom, 1565 scissor.getWidth(), scissor.getHeight()); 1566 // clear everything unscissored 1567 glClearColor(0, 0, 0, 0); 1568 glClear(GL_COLOR_BUFFER_BIT); 1569 // enable scissor for this frame 1570 glEnable(GL_SCISSOR_TEST); 1571 } 1572 } 1573 } 1574 1575 /* 1576 * and then, render the layers targeted at the framebuffer 1577 */ 1578 1579 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1580 const size_t count = layers.size(); 1581 const Transform& tr = hw->getTransform(); 1582 if (cur != end) { 1583 // we're using h/w composer 1584 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1585 const sp<LayerBase>& layer(layers[i]); 1586 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1587 if (!clip.isEmpty()) { 1588 switch (cur->getCompositionType()) { 1589 case HWC_OVERLAY: { 1590 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1591 && i 1592 && layer->isOpaque() 1593 && hasGlesComposition) { 1594 // never clear the very first layer since we're 1595 // guaranteed the FB is already cleared 1596 layer->clearWithOpenGL(hw, clip); 1597 } 1598 break; 1599 } 1600 case HWC_FRAMEBUFFER: { 1601 layer->draw(hw, clip); 1602 break; 1603 } 1604 case HWC_FRAMEBUFFER_TARGET: { 1605 // this should not happen as the iterator shouldn't 1606 // let us get there. 1607 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1608 break; 1609 } 1610 } 1611 } 1612 layer->setAcquireFence(hw, *cur); 1613 } 1614 } else { 1615 // we're not using h/w composer 1616 for (size_t i=0 ; i<count ; ++i) { 1617 const sp<LayerBase>& layer(layers[i]); 1618 const Region clip(dirty.intersect( 1619 tr.transform(layer->visibleRegion))); 1620 if (!clip.isEmpty()) { 1621 layer->draw(hw, clip); 1622 } 1623 } 1624 } 1625 1626 // disable scissor at the end of the frame 1627 glDisable(GL_SCISSOR_TEST); 1628} 1629 1630void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1631 const Region& region) const 1632{ 1633 glDisable(GL_TEXTURE_EXTERNAL_OES); 1634 glDisable(GL_TEXTURE_2D); 1635 glDisable(GL_BLEND); 1636 glColor4f(0,0,0,0); 1637 1638 const int32_t height = hw->getHeight(); 1639 Region::const_iterator it = region.begin(); 1640 Region::const_iterator const end = region.end(); 1641 while (it != end) { 1642 const Rect& r = *it++; 1643 GLfloat vertices[][2] = { 1644 { r.left, height - r.top }, 1645 { r.left, height - r.bottom }, 1646 { r.right, height - r.bottom }, 1647 { r.right, height - r.top } 1648 }; 1649 glVertexPointer(2, GL_FLOAT, 0, vertices); 1650 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1651 } 1652} 1653 1654ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1655 const sp<LayerBaseClient>& lbc) 1656{ 1657 // attach this layer to the client 1658 size_t name = client->attachLayer(lbc); 1659 1660 // add this layer to the current state list 1661 Mutex::Autolock _l(mStateLock); 1662 mCurrentState.layersSortedByZ.add(lbc); 1663 1664 return ssize_t(name); 1665} 1666 1667status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1668{ 1669 Mutex::Autolock _l(mStateLock); 1670 status_t err = purgatorizeLayer_l(layer); 1671 if (err == NO_ERROR) 1672 setTransactionFlags(eTransactionNeeded); 1673 return err; 1674} 1675 1676status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1677{ 1678 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1679 if (index >= 0) { 1680 mLayersRemoved = true; 1681 return NO_ERROR; 1682 } 1683 return status_t(index); 1684} 1685 1686status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1687{ 1688 // First add the layer to the purgatory list, which makes sure it won't 1689 // go away, then remove it from the main list (through a transaction). 1690 ssize_t err = removeLayer_l(layerBase); 1691 if (err >= 0) { 1692 mLayerPurgatory.add(layerBase); 1693 } 1694 1695 mLayersPendingRemoval.push(layerBase); 1696 1697 // it's possible that we don't find a layer, because it might 1698 // have been destroyed already -- this is not technically an error 1699 // from the user because there is a race between Client::destroySurface(), 1700 // ~Client() and ~ISurface(). 1701 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1702} 1703 1704uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1705{ 1706 return android_atomic_release_load(&mTransactionFlags); 1707} 1708 1709uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1710{ 1711 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1712} 1713 1714uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1715{ 1716 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1717 if ((old & flags)==0) { // wake the server up 1718 signalTransaction(); 1719 } 1720 return old; 1721} 1722 1723void SurfaceFlinger::setTransactionState( 1724 const Vector<ComposerState>& state, 1725 const Vector<DisplayState>& displays, 1726 uint32_t flags) 1727{ 1728 ATRACE_CALL(); 1729 Mutex::Autolock _l(mStateLock); 1730 uint32_t transactionFlags = 0; 1731 1732 if (flags & eAnimation) { 1733 // For window updates that are part of an animation we must wait for 1734 // previous animation "frames" to be handled. 1735 while (mAnimTransactionPending) { 1736 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1737 if (CC_UNLIKELY(err != NO_ERROR)) { 1738 // just in case something goes wrong in SF, return to the 1739 // caller after a few seconds. 1740 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1741 "waiting for previous animation frame"); 1742 mAnimTransactionPending = false; 1743 break; 1744 } 1745 } 1746 } 1747 1748 size_t count = displays.size(); 1749 for (size_t i=0 ; i<count ; i++) { 1750 const DisplayState& s(displays[i]); 1751 transactionFlags |= setDisplayStateLocked(s); 1752 } 1753 1754 count = state.size(); 1755 for (size_t i=0 ; i<count ; i++) { 1756 const ComposerState& s(state[i]); 1757 // Here we need to check that the interface we're given is indeed 1758 // one of our own. A malicious client could give us a NULL 1759 // IInterface, or one of its own or even one of our own but a 1760 // different type. All these situations would cause us to crash. 1761 // 1762 // NOTE: it would be better to use RTTI as we could directly check 1763 // that we have a Client*. however, RTTI is disabled in Android. 1764 if (s.client != NULL) { 1765 sp<IBinder> binder = s.client->asBinder(); 1766 if (binder != NULL) { 1767 String16 desc(binder->getInterfaceDescriptor()); 1768 if (desc == ISurfaceComposerClient::descriptor) { 1769 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1770 transactionFlags |= setClientStateLocked(client, s.state); 1771 } 1772 } 1773 } 1774 } 1775 1776 if (transactionFlags) { 1777 // this triggers the transaction 1778 setTransactionFlags(transactionFlags); 1779 1780 // if this is a synchronous transaction, wait for it to take effect 1781 // before returning. 1782 if (flags & eSynchronous) { 1783 mTransactionPending = true; 1784 } 1785 if (flags & eAnimation) { 1786 mAnimTransactionPending = true; 1787 } 1788 while (mTransactionPending) { 1789 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1790 if (CC_UNLIKELY(err != NO_ERROR)) { 1791 // just in case something goes wrong in SF, return to the 1792 // called after a few seconds. 1793 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1794 mTransactionPending = false; 1795 break; 1796 } 1797 } 1798 } 1799} 1800 1801uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1802{ 1803 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1804 if (dpyIdx < 0) 1805 return 0; 1806 1807 uint32_t flags = 0; 1808 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1809 if (disp.isValid()) { 1810 const uint32_t what = s.what; 1811 if (what & DisplayState::eSurfaceChanged) { 1812 if (disp.surface->asBinder() != s.surface->asBinder()) { 1813 disp.surface = s.surface; 1814 flags |= eDisplayTransactionNeeded; 1815 } 1816 } 1817 if (what & DisplayState::eLayerStackChanged) { 1818 if (disp.layerStack != s.layerStack) { 1819 disp.layerStack = s.layerStack; 1820 flags |= eDisplayTransactionNeeded; 1821 } 1822 } 1823 if (what & DisplayState::eDisplayProjectionChanged) { 1824 if (disp.orientation != s.orientation) { 1825 disp.orientation = s.orientation; 1826 flags |= eDisplayTransactionNeeded; 1827 } 1828 if (disp.frame != s.frame) { 1829 disp.frame = s.frame; 1830 flags |= eDisplayTransactionNeeded; 1831 } 1832 if (disp.viewport != s.viewport) { 1833 disp.viewport = s.viewport; 1834 flags |= eDisplayTransactionNeeded; 1835 } 1836 } 1837 } 1838 return flags; 1839} 1840 1841uint32_t SurfaceFlinger::setClientStateLocked( 1842 const sp<Client>& client, 1843 const layer_state_t& s) 1844{ 1845 uint32_t flags = 0; 1846 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1847 if (layer != 0) { 1848 const uint32_t what = s.what; 1849 if (what & layer_state_t::ePositionChanged) { 1850 if (layer->setPosition(s.x, s.y)) 1851 flags |= eTraversalNeeded; 1852 } 1853 if (what & layer_state_t::eLayerChanged) { 1854 // NOTE: index needs to be calculated before we update the state 1855 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1856 if (layer->setLayer(s.z)) { 1857 mCurrentState.layersSortedByZ.removeAt(idx); 1858 mCurrentState.layersSortedByZ.add(layer); 1859 // we need traversal (state changed) 1860 // AND transaction (list changed) 1861 flags |= eTransactionNeeded|eTraversalNeeded; 1862 } 1863 } 1864 if (what & layer_state_t::eSizeChanged) { 1865 if (layer->setSize(s.w, s.h)) { 1866 flags |= eTraversalNeeded; 1867 } 1868 } 1869 if (what & layer_state_t::eAlphaChanged) { 1870 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1871 flags |= eTraversalNeeded; 1872 } 1873 if (what & layer_state_t::eMatrixChanged) { 1874 if (layer->setMatrix(s.matrix)) 1875 flags |= eTraversalNeeded; 1876 } 1877 if (what & layer_state_t::eTransparentRegionChanged) { 1878 if (layer->setTransparentRegionHint(s.transparentRegion)) 1879 flags |= eTraversalNeeded; 1880 } 1881 if (what & layer_state_t::eVisibilityChanged) { 1882 if (layer->setFlags(s.flags, s.mask)) 1883 flags |= eTraversalNeeded; 1884 } 1885 if (what & layer_state_t::eCropChanged) { 1886 if (layer->setCrop(s.crop)) 1887 flags |= eTraversalNeeded; 1888 } 1889 if (what & layer_state_t::eLayerStackChanged) { 1890 // NOTE: index needs to be calculated before we update the state 1891 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1892 if (layer->setLayerStack(s.layerStack)) { 1893 mCurrentState.layersSortedByZ.removeAt(idx); 1894 mCurrentState.layersSortedByZ.add(layer); 1895 // we need traversal (state changed) 1896 // AND transaction (list changed) 1897 flags |= eTransactionNeeded|eTraversalNeeded; 1898 } 1899 } 1900 } 1901 return flags; 1902} 1903 1904sp<ISurface> SurfaceFlinger::createLayer( 1905 ISurfaceComposerClient::surface_data_t* params, 1906 const String8& name, 1907 const sp<Client>& client, 1908 uint32_t w, uint32_t h, PixelFormat format, 1909 uint32_t flags) 1910{ 1911 sp<LayerBaseClient> layer; 1912 sp<ISurface> surfaceHandle; 1913 1914 if (int32_t(w|h) < 0) { 1915 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1916 int(w), int(h)); 1917 return surfaceHandle; 1918 } 1919 1920 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1921 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1922 case ISurfaceComposerClient::eFXSurfaceNormal: 1923 layer = createNormalLayer(client, w, h, flags, format); 1924 break; 1925 case ISurfaceComposerClient::eFXSurfaceBlur: 1926 case ISurfaceComposerClient::eFXSurfaceDim: 1927 layer = createDimLayer(client, w, h, flags); 1928 break; 1929 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1930 layer = createScreenshotLayer(client, w, h, flags); 1931 break; 1932 } 1933 1934 if (layer != 0) { 1935 layer->initStates(w, h, flags); 1936 layer->setName(name); 1937 ssize_t token = addClientLayer(client, layer); 1938 surfaceHandle = layer->getSurface(); 1939 if (surfaceHandle != 0) { 1940 params->token = token; 1941 params->identity = layer->getIdentity(); 1942 } 1943 setTransactionFlags(eTransactionNeeded); 1944 } 1945 1946 return surfaceHandle; 1947} 1948 1949sp<Layer> SurfaceFlinger::createNormalLayer( 1950 const sp<Client>& client, 1951 uint32_t w, uint32_t h, uint32_t flags, 1952 PixelFormat& format) 1953{ 1954 // initialize the surfaces 1955 switch (format) { 1956 case PIXEL_FORMAT_TRANSPARENT: 1957 case PIXEL_FORMAT_TRANSLUCENT: 1958 format = PIXEL_FORMAT_RGBA_8888; 1959 break; 1960 case PIXEL_FORMAT_OPAQUE: 1961#ifdef NO_RGBX_8888 1962 format = PIXEL_FORMAT_RGB_565; 1963#else 1964 format = PIXEL_FORMAT_RGBX_8888; 1965#endif 1966 break; 1967 } 1968 1969#ifdef NO_RGBX_8888 1970 if (format == PIXEL_FORMAT_RGBX_8888) 1971 format = PIXEL_FORMAT_RGBA_8888; 1972#endif 1973 1974 sp<Layer> layer = new Layer(this, client); 1975 status_t err = layer->setBuffers(w, h, format, flags); 1976 if (CC_LIKELY(err != NO_ERROR)) { 1977 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1978 layer.clear(); 1979 } 1980 return layer; 1981} 1982 1983sp<LayerDim> SurfaceFlinger::createDimLayer( 1984 const sp<Client>& client, 1985 uint32_t w, uint32_t h, uint32_t flags) 1986{ 1987 sp<LayerDim> layer = new LayerDim(this, client); 1988 return layer; 1989} 1990 1991sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1992 const sp<Client>& client, 1993 uint32_t w, uint32_t h, uint32_t flags) 1994{ 1995 sp<LayerScreenshot> layer = new LayerScreenshot(this, client); 1996 return layer; 1997} 1998 1999status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 2000{ 2001 /* 2002 * called by the window manager, when a surface should be marked for 2003 * destruction. 2004 * 2005 * The surface is removed from the current and drawing lists, but placed 2006 * in the purgatory queue, so it's not destroyed right-away (we need 2007 * to wait for all client's references to go away first). 2008 */ 2009 2010 status_t err = NAME_NOT_FOUND; 2011 Mutex::Autolock _l(mStateLock); 2012 sp<LayerBaseClient> layer = client->getLayerUser(sid); 2013 2014 if (layer != 0) { 2015 err = purgatorizeLayer_l(layer); 2016 if (err == NO_ERROR) { 2017 setTransactionFlags(eTransactionNeeded); 2018 } 2019 } 2020 return err; 2021} 2022 2023status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 2024{ 2025 // called by ~ISurface() when all references are gone 2026 status_t err = NO_ERROR; 2027 sp<LayerBaseClient> l(layer.promote()); 2028 if (l != NULL) { 2029 Mutex::Autolock _l(mStateLock); 2030 err = removeLayer_l(l); 2031 if (err == NAME_NOT_FOUND) { 2032 // The surface wasn't in the current list, which means it was 2033 // removed already, which means it is in the purgatory, 2034 // and need to be removed from there. 2035 ssize_t idx = mLayerPurgatory.remove(l); 2036 ALOGE_IF(idx < 0, 2037 "layer=%p is not in the purgatory list", l.get()); 2038 } 2039 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 2040 "error removing layer=%p (%s)", l.get(), strerror(-err)); 2041 } 2042 return err; 2043} 2044 2045// --------------------------------------------------------------------------- 2046 2047void SurfaceFlinger::onInitializeDisplays() { 2048 // reset screen orientation 2049 Vector<ComposerState> state; 2050 Vector<DisplayState> displays; 2051 DisplayState d; 2052 d.what = DisplayState::eDisplayProjectionChanged; 2053 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2054 d.orientation = DisplayState::eOrientationDefault; 2055 d.frame.makeInvalid(); 2056 d.viewport.makeInvalid(); 2057 displays.add(d); 2058 setTransactionState(state, displays, 0); 2059 onScreenAcquired(getDefaultDisplayDevice()); 2060} 2061 2062void SurfaceFlinger::initializeDisplays() { 2063 class MessageScreenInitialized : public MessageBase { 2064 SurfaceFlinger* flinger; 2065 public: 2066 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2067 virtual bool handler() { 2068 flinger->onInitializeDisplays(); 2069 return true; 2070 } 2071 }; 2072 sp<MessageBase> msg = new MessageScreenInitialized(this); 2073 postMessageAsync(msg); // we may be called from main thread, use async message 2074} 2075 2076 2077void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2078 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2079 if (hw->isScreenAcquired()) { 2080 // this is expected, e.g. when power manager wakes up during boot 2081 ALOGD(" screen was previously acquired"); 2082 return; 2083 } 2084 2085 hw->acquireScreen(); 2086 int32_t type = hw->getDisplayType(); 2087 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2088 // built-in display, tell the HWC 2089 getHwComposer().acquire(type); 2090 2091 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2092 // FIXME: eventthread only knows about the main display right now 2093 mEventThread->onScreenAcquired(); 2094 } 2095 } 2096 mVisibleRegionsDirty = true; 2097 repaintEverything(); 2098} 2099 2100void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2101 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2102 if (!hw->isScreenAcquired()) { 2103 ALOGD(" screen was previously released"); 2104 return; 2105 } 2106 2107 hw->releaseScreen(); 2108 int32_t type = hw->getDisplayType(); 2109 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2110 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2111 // FIXME: eventthread only knows about the main display right now 2112 mEventThread->onScreenReleased(); 2113 } 2114 2115 // built-in display, tell the HWC 2116 getHwComposer().release(type); 2117 } 2118 mVisibleRegionsDirty = true; 2119 // from this point on, SF will stop drawing on this display 2120} 2121 2122void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2123 class MessageScreenAcquired : public MessageBase { 2124 SurfaceFlinger& mFlinger; 2125 sp<IBinder> mDisplay; 2126 public: 2127 MessageScreenAcquired(SurfaceFlinger& flinger, 2128 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2129 virtual bool handler() { 2130 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2131 if (hw == NULL) { 2132 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2133 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2134 ALOGW("Attempt to unblank virtual display"); 2135 } else { 2136 mFlinger.onScreenAcquired(hw); 2137 } 2138 return true; 2139 } 2140 }; 2141 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2142 postMessageSync(msg); 2143} 2144 2145void SurfaceFlinger::blank(const sp<IBinder>& display) { 2146 class MessageScreenReleased : public MessageBase { 2147 SurfaceFlinger& mFlinger; 2148 sp<IBinder> mDisplay; 2149 public: 2150 MessageScreenReleased(SurfaceFlinger& flinger, 2151 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2152 virtual bool handler() { 2153 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2154 if (hw == NULL) { 2155 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2156 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2157 ALOGW("Attempt to blank virtual display"); 2158 } else { 2159 mFlinger.onScreenReleased(hw); 2160 } 2161 return true; 2162 } 2163 }; 2164 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2165 postMessageSync(msg); 2166} 2167 2168// --------------------------------------------------------------------------- 2169 2170status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2171{ 2172 const size_t SIZE = 4096; 2173 char buffer[SIZE]; 2174 String8 result; 2175 2176 if (!PermissionCache::checkCallingPermission(sDump)) { 2177 snprintf(buffer, SIZE, "Permission Denial: " 2178 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2179 IPCThreadState::self()->getCallingPid(), 2180 IPCThreadState::self()->getCallingUid()); 2181 result.append(buffer); 2182 } else { 2183 // Try to get the main lock, but don't insist if we can't 2184 // (this would indicate SF is stuck, but we want to be able to 2185 // print something in dumpsys). 2186 int retry = 3; 2187 while (mStateLock.tryLock()<0 && --retry>=0) { 2188 usleep(1000000); 2189 } 2190 const bool locked(retry >= 0); 2191 if (!locked) { 2192 snprintf(buffer, SIZE, 2193 "SurfaceFlinger appears to be unresponsive, " 2194 "dumping anyways (no locks held)\n"); 2195 result.append(buffer); 2196 } 2197 2198 bool dumpAll = true; 2199 size_t index = 0; 2200 size_t numArgs = args.size(); 2201 if (numArgs) { 2202 if ((index < numArgs) && 2203 (args[index] == String16("--list"))) { 2204 index++; 2205 listLayersLocked(args, index, result, buffer, SIZE); 2206 dumpAll = false; 2207 } 2208 2209 if ((index < numArgs) && 2210 (args[index] == String16("--latency"))) { 2211 index++; 2212 dumpStatsLocked(args, index, result, buffer, SIZE); 2213 dumpAll = false; 2214 } 2215 2216 if ((index < numArgs) && 2217 (args[index] == String16("--latency-clear"))) { 2218 index++; 2219 clearStatsLocked(args, index, result, buffer, SIZE); 2220 dumpAll = false; 2221 } 2222 } 2223 2224 if (dumpAll) { 2225 dumpAllLocked(result, buffer, SIZE); 2226 } 2227 2228 if (locked) { 2229 mStateLock.unlock(); 2230 } 2231 } 2232 write(fd, result.string(), result.size()); 2233 return NO_ERROR; 2234} 2235 2236void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2237 String8& result, char* buffer, size_t SIZE) const 2238{ 2239 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2240 const size_t count = currentLayers.size(); 2241 for (size_t i=0 ; i<count ; i++) { 2242 const sp<LayerBase>& layer(currentLayers[i]); 2243 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2244 result.append(buffer); 2245 } 2246} 2247 2248void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2249 String8& result, char* buffer, size_t SIZE) const 2250{ 2251 String8 name; 2252 if (index < args.size()) { 2253 name = String8(args[index]); 2254 index++; 2255 } 2256 2257 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2258 const size_t count = currentLayers.size(); 2259 for (size_t i=0 ; i<count ; i++) { 2260 const sp<LayerBase>& layer(currentLayers[i]); 2261 if (name.isEmpty()) { 2262 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2263 result.append(buffer); 2264 } 2265 if (name.isEmpty() || (name == layer->getName())) { 2266 layer->dumpStats(result, buffer, SIZE); 2267 } 2268 } 2269} 2270 2271void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2272 String8& result, char* buffer, size_t SIZE) const 2273{ 2274 String8 name; 2275 if (index < args.size()) { 2276 name = String8(args[index]); 2277 index++; 2278 } 2279 2280 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2281 const size_t count = currentLayers.size(); 2282 for (size_t i=0 ; i<count ; i++) { 2283 const sp<LayerBase>& layer(currentLayers[i]); 2284 if (name.isEmpty() || (name == layer->getName())) { 2285 layer->clearStats(); 2286 } 2287 } 2288} 2289 2290/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2291{ 2292 static const char* config = 2293 " [sf" 2294#ifdef NO_RGBX_8888 2295 " NO_RGBX_8888" 2296#endif 2297#ifdef HAS_CONTEXT_PRIORITY 2298 " HAS_CONTEXT_PRIORITY" 2299#endif 2300#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2301 " NEVER_DEFAULT_TO_ASYNC_MODE" 2302#endif 2303#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2304 " TARGET_DISABLE_TRIPLE_BUFFERING" 2305#endif 2306 "]"; 2307 result.append(config); 2308} 2309 2310void SurfaceFlinger::dumpAllLocked( 2311 String8& result, char* buffer, size_t SIZE) const 2312{ 2313 // figure out if we're stuck somewhere 2314 const nsecs_t now = systemTime(); 2315 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2316 const nsecs_t inTransaction(mDebugInTransaction); 2317 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2318 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2319 2320 /* 2321 * Dump library configuration. 2322 */ 2323 result.append("Build configuration:"); 2324 appendSfConfigString(result); 2325 appendUiConfigString(result); 2326 appendGuiConfigString(result); 2327 result.append("\n"); 2328 2329 /* 2330 * Dump the visible layer list 2331 */ 2332 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2333 const size_t count = currentLayers.size(); 2334 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2335 result.append(buffer); 2336 for (size_t i=0 ; i<count ; i++) { 2337 const sp<LayerBase>& layer(currentLayers[i]); 2338 layer->dump(result, buffer, SIZE); 2339 } 2340 2341 /* 2342 * Dump the layers in the purgatory 2343 */ 2344 2345 const size_t purgatorySize = mLayerPurgatory.size(); 2346 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 2347 result.append(buffer); 2348 for (size_t i=0 ; i<purgatorySize ; i++) { 2349 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 2350 layer->shortDump(result, buffer, SIZE); 2351 } 2352 2353 /* 2354 * Dump Display state 2355 */ 2356 2357 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2358 result.append(buffer); 2359 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2360 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2361 hw->dump(result, buffer, SIZE); 2362 } 2363 2364 /* 2365 * Dump SurfaceFlinger global state 2366 */ 2367 2368 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2369 result.append(buffer); 2370 2371 HWComposer& hwc(getHwComposer()); 2372 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2373 const GLExtensions& extensions(GLExtensions::getInstance()); 2374 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2375 extensions.getVendor(), 2376 extensions.getRenderer(), 2377 extensions.getVersion()); 2378 result.append(buffer); 2379 2380 snprintf(buffer, SIZE, "EGL : %s\n", 2381 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2382 result.append(buffer); 2383 2384 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2385 result.append(buffer); 2386 2387 hw->undefinedRegion.dump(result, "undefinedRegion"); 2388 snprintf(buffer, SIZE, 2389 " orientation=%d, canDraw=%d\n", 2390 hw->getOrientation(), hw->canDraw()); 2391 result.append(buffer); 2392 snprintf(buffer, SIZE, 2393 " last eglSwapBuffers() time: %f us\n" 2394 " last transaction time : %f us\n" 2395 " transaction-flags : %08x\n" 2396 " refresh-rate : %f fps\n" 2397 " x-dpi : %f\n" 2398 " y-dpi : %f\n", 2399 mLastSwapBufferTime/1000.0, 2400 mLastTransactionTime/1000.0, 2401 mTransactionFlags, 2402 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2403 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2404 hwc.getDpiY(HWC_DISPLAY_PRIMARY)); 2405 result.append(buffer); 2406 2407 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2408 inSwapBuffersDuration/1000.0); 2409 result.append(buffer); 2410 2411 snprintf(buffer, SIZE, " transaction time: %f us\n", 2412 inTransactionDuration/1000.0); 2413 result.append(buffer); 2414 2415 /* 2416 * VSYNC state 2417 */ 2418 mEventThread->dump(result, buffer, SIZE); 2419 2420 /* 2421 * Dump HWComposer state 2422 */ 2423 snprintf(buffer, SIZE, "h/w composer state:\n"); 2424 result.append(buffer); 2425 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2426 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2427 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2428 result.append(buffer); 2429 hwc.dump(result, buffer, SIZE); 2430 2431 /* 2432 * Dump gralloc state 2433 */ 2434 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2435 alloc.dump(result); 2436} 2437 2438const Vector< sp<LayerBase> >& 2439SurfaceFlinger::getLayerSortedByZForHwcDisplay(int disp) { 2440 // Note: mStateLock is held here 2441 return getDisplayDevice( getBuiltInDisplay(disp) )->getVisibleLayersSortedByZ(); 2442} 2443 2444bool SurfaceFlinger::startDdmConnection() 2445{ 2446 void* libddmconnection_dso = 2447 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2448 if (!libddmconnection_dso) { 2449 return false; 2450 } 2451 void (*DdmConnection_start)(const char* name); 2452 DdmConnection_start = 2453 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2454 if (!DdmConnection_start) { 2455 dlclose(libddmconnection_dso); 2456 return false; 2457 } 2458 (*DdmConnection_start)(getServiceName()); 2459 return true; 2460} 2461 2462status_t SurfaceFlinger::onTransact( 2463 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2464{ 2465 switch (code) { 2466 case CREATE_CONNECTION: 2467 case SET_TRANSACTION_STATE: 2468 case BOOT_FINISHED: 2469 case BLANK: 2470 case UNBLANK: 2471 { 2472 // codes that require permission check 2473 IPCThreadState* ipc = IPCThreadState::self(); 2474 const int pid = ipc->getCallingPid(); 2475 const int uid = ipc->getCallingUid(); 2476 if ((uid != AID_GRAPHICS) && 2477 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2478 ALOGE("Permission Denial: " 2479 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2480 return PERMISSION_DENIED; 2481 } 2482 break; 2483 } 2484 case CAPTURE_SCREEN: 2485 { 2486 // codes that require permission check 2487 IPCThreadState* ipc = IPCThreadState::self(); 2488 const int pid = ipc->getCallingPid(); 2489 const int uid = ipc->getCallingUid(); 2490 if ((uid != AID_GRAPHICS) && 2491 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2492 ALOGE("Permission Denial: " 2493 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2494 return PERMISSION_DENIED; 2495 } 2496 break; 2497 } 2498 } 2499 2500 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2501 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2502 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2503 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2504 IPCThreadState* ipc = IPCThreadState::self(); 2505 const int pid = ipc->getCallingPid(); 2506 const int uid = ipc->getCallingUid(); 2507 ALOGE("Permission Denial: " 2508 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2509 return PERMISSION_DENIED; 2510 } 2511 int n; 2512 switch (code) { 2513 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2514 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2515 return NO_ERROR; 2516 case 1002: // SHOW_UPDATES 2517 n = data.readInt32(); 2518 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2519 invalidateHwcGeometry(); 2520 repaintEverything(); 2521 return NO_ERROR; 2522 case 1004:{ // repaint everything 2523 repaintEverything(); 2524 return NO_ERROR; 2525 } 2526 case 1005:{ // force transaction 2527 setTransactionFlags( 2528 eTransactionNeeded| 2529 eDisplayTransactionNeeded| 2530 eTraversalNeeded); 2531 return NO_ERROR; 2532 } 2533 case 1006:{ // send empty update 2534 signalRefresh(); 2535 return NO_ERROR; 2536 } 2537 case 1008: // toggle use of hw composer 2538 n = data.readInt32(); 2539 mDebugDisableHWC = n ? 1 : 0; 2540 invalidateHwcGeometry(); 2541 repaintEverything(); 2542 return NO_ERROR; 2543 case 1009: // toggle use of transform hint 2544 n = data.readInt32(); 2545 mDebugDisableTransformHint = n ? 1 : 0; 2546 invalidateHwcGeometry(); 2547 repaintEverything(); 2548 return NO_ERROR; 2549 case 1010: // interrogate. 2550 reply->writeInt32(0); 2551 reply->writeInt32(0); 2552 reply->writeInt32(mDebugRegion); 2553 reply->writeInt32(0); 2554 reply->writeInt32(mDebugDisableHWC); 2555 return NO_ERROR; 2556 case 1013: { 2557 Mutex::Autolock _l(mStateLock); 2558 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2559 reply->writeInt32(hw->getPageFlipCount()); 2560 } 2561 return NO_ERROR; 2562 } 2563 } 2564 return err; 2565} 2566 2567void SurfaceFlinger::repaintEverything() { 2568 android_atomic_or(1, &mRepaintEverything); 2569 signalTransaction(); 2570} 2571 2572// --------------------------------------------------------------------------- 2573 2574status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack, 2575 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2576{ 2577 Mutex::Autolock _l(mStateLock); 2578 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut); 2579} 2580 2581status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack, 2582 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2583{ 2584 ATRACE_CALL(); 2585 2586 if (!GLExtensions::getInstance().haveFramebufferObject()) 2587 return INVALID_OPERATION; 2588 2589 // get screen geometry 2590 // FIXME: figure out what it means to have a screenshot texture w/ multi-display 2591 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2592 const uint32_t hw_w = hw->getWidth(); 2593 const uint32_t hw_h = hw->getHeight(); 2594 GLfloat u = 1; 2595 GLfloat v = 1; 2596 2597 // make sure to clear all GL error flags 2598 while ( glGetError() != GL_NO_ERROR ) ; 2599 2600 // create a FBO 2601 GLuint name, tname; 2602 glGenTextures(1, &tname); 2603 glBindTexture(GL_TEXTURE_2D, tname); 2604 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2605 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2606 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2607 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2608 if (glGetError() != GL_NO_ERROR) { 2609 while ( glGetError() != GL_NO_ERROR ) ; 2610 GLint tw = (2 << (31 - clz(hw_w))); 2611 GLint th = (2 << (31 - clz(hw_h))); 2612 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2613 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2614 u = GLfloat(hw_w) / tw; 2615 v = GLfloat(hw_h) / th; 2616 } 2617 glGenFramebuffersOES(1, &name); 2618 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2619 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2620 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2621 2622 DisplayDevice::setViewportAndProjection(hw); 2623 2624 // redraw the screen entirely... 2625 glDisable(GL_TEXTURE_EXTERNAL_OES); 2626 glDisable(GL_TEXTURE_2D); 2627 glClearColor(0,0,0,1); 2628 glClear(GL_COLOR_BUFFER_BIT); 2629 glMatrixMode(GL_MODELVIEW); 2630 glLoadIdentity(); 2631 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2632 const size_t count = layers.size(); 2633 for (size_t i=0 ; i<count ; ++i) { 2634 const sp<LayerBase>& layer(layers[i]); 2635 layer->draw(hw); 2636 } 2637 2638 hw->compositionComplete(); 2639 2640 // back to main framebuffer 2641 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2642 glDeleteFramebuffersOES(1, &name); 2643 2644 *textureName = tname; 2645 *uOut = u; 2646 *vOut = v; 2647 return NO_ERROR; 2648} 2649 2650// --------------------------------------------------------------------------- 2651 2652status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display, 2653 sp<IMemoryHeap>* heap, 2654 uint32_t* w, uint32_t* h, PixelFormat* f, 2655 uint32_t sw, uint32_t sh, 2656 uint32_t minLayerZ, uint32_t maxLayerZ) 2657{ 2658 ATRACE_CALL(); 2659 2660 status_t result = PERMISSION_DENIED; 2661 2662 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2663 return INVALID_OPERATION; 2664 } 2665 2666 // get screen geometry 2667 sp<const DisplayDevice> hw(getDisplayDevice(display)); 2668 const uint32_t hw_w = hw->getWidth(); 2669 const uint32_t hw_h = hw->getHeight(); 2670 2671 // if we have secure windows on this display, never allow the screen capture 2672 if (hw->getSecureLayerVisible()) { 2673 ALOGW("FB is protected: PERMISSION_DENIED"); 2674 return PERMISSION_DENIED; 2675 } 2676 2677 if ((sw > hw_w) || (sh > hw_h)) { 2678 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2679 return BAD_VALUE; 2680 } 2681 2682 sw = (!sw) ? hw_w : sw; 2683 sh = (!sh) ? hw_h : sh; 2684 const size_t size = sw * sh * 4; 2685 const bool filtering = sw != hw_w || sh != hw_h; 2686 2687// ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2688// sw, sh, minLayerZ, maxLayerZ); 2689 2690 // make sure to clear all GL error flags 2691 while ( glGetError() != GL_NO_ERROR ) ; 2692 2693 // create a FBO 2694 GLuint name, tname; 2695 glGenRenderbuffersOES(1, &tname); 2696 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2697 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2698 2699 glGenFramebuffersOES(1, &name); 2700 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2701 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2702 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2703 2704 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2705 2706 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2707 2708 // invert everything, b/c glReadPixel() below will invert the FB 2709 GLint viewport[4]; 2710 glGetIntegerv(GL_VIEWPORT, viewport); 2711 glViewport(0, 0, sw, sh); 2712 glMatrixMode(GL_PROJECTION); 2713 glPushMatrix(); 2714 glLoadIdentity(); 2715 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2716 glMatrixMode(GL_MODELVIEW); 2717 2718 // redraw the screen entirely... 2719 glClearColor(0,0,0,1); 2720 glClear(GL_COLOR_BUFFER_BIT); 2721 2722 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2723 const size_t count = layers.size(); 2724 for (size_t i=0 ; i<count ; ++i) { 2725 const sp<LayerBase>& layer(layers[i]); 2726 const uint32_t z = layer->drawingState().z; 2727 if (z >= minLayerZ && z <= maxLayerZ) { 2728 if (filtering) layer->setFiltering(true); 2729 layer->draw(hw); 2730 if (filtering) layer->setFiltering(false); 2731 } 2732 } 2733 2734 // check for errors and return screen capture 2735 if (glGetError() != GL_NO_ERROR) { 2736 // error while rendering 2737 result = INVALID_OPERATION; 2738 } else { 2739 // allocate shared memory large enough to hold the 2740 // screen capture 2741 sp<MemoryHeapBase> base( 2742 new MemoryHeapBase(size, 0, "screen-capture") ); 2743 void* const ptr = base->getBase(); 2744 if (ptr != MAP_FAILED) { 2745 // capture the screen with glReadPixels() 2746 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2747 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2748 if (glGetError() == GL_NO_ERROR) { 2749 *heap = base; 2750 *w = sw; 2751 *h = sh; 2752 *f = PIXEL_FORMAT_RGBA_8888; 2753 result = NO_ERROR; 2754 } 2755 } else { 2756 result = NO_MEMORY; 2757 } 2758 } 2759 glViewport(viewport[0], viewport[1], viewport[2], viewport[3]); 2760 glMatrixMode(GL_PROJECTION); 2761 glPopMatrix(); 2762 glMatrixMode(GL_MODELVIEW); 2763 } else { 2764 result = BAD_VALUE; 2765 } 2766 2767 // release FBO resources 2768 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2769 glDeleteRenderbuffersOES(1, &tname); 2770 glDeleteFramebuffersOES(1, &name); 2771 2772 hw->compositionComplete(); 2773 2774// ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2775 2776 return result; 2777} 2778 2779 2780status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2781 sp<IMemoryHeap>* heap, 2782 uint32_t* width, uint32_t* height, PixelFormat* format, 2783 uint32_t sw, uint32_t sh, 2784 uint32_t minLayerZ, uint32_t maxLayerZ) 2785{ 2786 if (CC_UNLIKELY(display == 0)) 2787 return BAD_VALUE; 2788 2789 if (!GLExtensions::getInstance().haveFramebufferObject()) 2790 return INVALID_OPERATION; 2791 2792 class MessageCaptureScreen : public MessageBase { 2793 SurfaceFlinger* flinger; 2794 sp<IBinder> display; 2795 sp<IMemoryHeap>* heap; 2796 uint32_t* w; 2797 uint32_t* h; 2798 PixelFormat* f; 2799 uint32_t sw; 2800 uint32_t sh; 2801 uint32_t minLayerZ; 2802 uint32_t maxLayerZ; 2803 status_t result; 2804 public: 2805 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display, 2806 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2807 uint32_t sw, uint32_t sh, 2808 uint32_t minLayerZ, uint32_t maxLayerZ) 2809 : flinger(flinger), display(display), 2810 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2811 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2812 result(PERMISSION_DENIED) 2813 { 2814 } 2815 status_t getResult() const { 2816 return result; 2817 } 2818 virtual bool handler() { 2819 Mutex::Autolock _l(flinger->mStateLock); 2820 result = flinger->captureScreenImplLocked(display, 2821 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2822 return true; 2823 } 2824 }; 2825 2826 sp<MessageBase> msg = new MessageCaptureScreen(this, 2827 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2828 status_t res = postMessageSync(msg); 2829 if (res == NO_ERROR) { 2830 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2831 } 2832 return res; 2833} 2834 2835// --------------------------------------------------------------------------- 2836 2837SurfaceFlinger::LayerVector::LayerVector() { 2838} 2839 2840SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2841 : SortedVector<sp<LayerBase> >(rhs) { 2842} 2843 2844int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2845 const void* rhs) const 2846{ 2847 // sort layers per layer-stack, then by z-order and finally by sequence 2848 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2849 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2850 2851 uint32_t ls = l->currentState().layerStack; 2852 uint32_t rs = r->currentState().layerStack; 2853 if (ls != rs) 2854 return ls - rs; 2855 2856 uint32_t lz = l->currentState().z; 2857 uint32_t rz = r->currentState().z; 2858 if (lz != rz) 2859 return lz - rz; 2860 2861 return l->sequence - r->sequence; 2862} 2863 2864// --------------------------------------------------------------------------- 2865 2866SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2867 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2868} 2869 2870SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2871 : type(type), layerStack(0), orientation(0) { 2872 viewport.makeInvalid(); 2873 frame.makeInvalid(); 2874} 2875 2876// --------------------------------------------------------------------------- 2877 2878}; // namespace android 2879