SurfaceFlinger.cpp revision 392edd88cb63d71a21a86a02cf9c56ac97637128
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#include <gui/GraphicBufferAlloc.h> 44 45#include <ui/GraphicBufferAllocator.h> 46#include <ui/PixelFormat.h> 47#include <ui/UiConfig.h> 48 49#include <utils/misc.h> 50#include <utils/String8.h> 51#include <utils/String16.h> 52#include <utils/StopWatch.h> 53#include <utils/Trace.h> 54 55#include <private/android_filesystem_config.h> 56 57#include "clz.h" 58#include "DdmConnection.h" 59#include "DisplayDevice.h" 60#include "Client.h" 61#include "EventThread.h" 62#include "GLExtensions.h" 63#include "Layer.h" 64#include "LayerDim.h" 65#include "LayerScreenshot.h" 66#include "SurfaceFlinger.h" 67 68#include "DisplayHardware/FramebufferSurface.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 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1524 1525 // set the frame buffer 1526 glMatrixMode(GL_MODELVIEW); 1527 glLoadIdentity(); 1528 1529 // Never touch the framebuffer if we don't have any framebuffer layers 1530 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1531 if (hasHwcComposition) { 1532 // when using overlays, we assume a fully transparent framebuffer 1533 // NOTE: we could reduce how much we need to clear, for instance 1534 // remove where there are opaque FB layers. however, on some 1535 // GPUs doing a "clean slate" glClear might be more efficient. 1536 // We'll revisit later if needed. 1537 glClearColor(0, 0, 0, 0); 1538 glClear(GL_COLOR_BUFFER_BIT); 1539 } else { 1540 // we start with the whole screen area 1541 const Region bounds(hw->getBounds()); 1542 1543 // we remove the scissor part 1544 // we're left with the letterbox region 1545 // (common case is that letterbox ends-up being empty) 1546 const Region letterbox(bounds.subtract(hw->getScissor())); 1547 1548 // compute the area to clear 1549 Region region(hw->undefinedRegion.merge(letterbox)); 1550 1551 // but limit it to the dirty region 1552 region.andSelf(dirty); 1553 1554 // screen is already cleared here 1555 if (!region.isEmpty()) { 1556 // can happen with SurfaceView 1557 drawWormhole(hw, region); 1558 } 1559 } 1560 1561 if (hw->getDisplayType() != DisplayDevice::DISPLAY_PRIMARY) { 1562 // just to be on the safe side, we don't set the 1563 // scissor on the main display. It should never be needed 1564 // anyways (though in theory it could since the API allows it). 1565 const Rect& bounds(hw->getBounds()); 1566 const Rect& scissor(hw->getScissor()); 1567 if (scissor != bounds) { 1568 // scissor doesn't match the screen's dimensions, so we 1569 // need to clear everything outside of it and enable 1570 // the GL scissor so we don't draw anything where we shouldn't 1571 const GLint height = hw->getHeight(); 1572 glScissor(scissor.left, height - scissor.bottom, 1573 scissor.getWidth(), scissor.getHeight()); 1574 // enable scissor for this frame 1575 glEnable(GL_SCISSOR_TEST); 1576 } 1577 } 1578 } 1579 1580 /* 1581 * and then, render the layers targeted at the framebuffer 1582 */ 1583 1584 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1585 const size_t count = layers.size(); 1586 const Transform& tr = hw->getTransform(); 1587 if (cur != end) { 1588 // we're using h/w composer 1589 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1590 const sp<LayerBase>& layer(layers[i]); 1591 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1592 if (!clip.isEmpty()) { 1593 switch (cur->getCompositionType()) { 1594 case HWC_OVERLAY: { 1595 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1596 && i 1597 && layer->isOpaque() 1598 && hasGlesComposition) { 1599 // never clear the very first layer since we're 1600 // guaranteed the FB is already cleared 1601 layer->clearWithOpenGL(hw, clip); 1602 } 1603 break; 1604 } 1605 case HWC_FRAMEBUFFER: { 1606 layer->draw(hw, clip); 1607 break; 1608 } 1609 case HWC_FRAMEBUFFER_TARGET: { 1610 // this should not happen as the iterator shouldn't 1611 // let us get there. 1612 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1613 break; 1614 } 1615 } 1616 } 1617 layer->setAcquireFence(hw, *cur); 1618 } 1619 } else { 1620 // we're not using h/w composer 1621 for (size_t i=0 ; i<count ; ++i) { 1622 const sp<LayerBase>& layer(layers[i]); 1623 const Region clip(dirty.intersect( 1624 tr.transform(layer->visibleRegion))); 1625 if (!clip.isEmpty()) { 1626 layer->draw(hw, clip); 1627 } 1628 } 1629 } 1630 1631 // disable scissor at the end of the frame 1632 glDisable(GL_SCISSOR_TEST); 1633} 1634 1635void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1636 const Region& region) const 1637{ 1638 glDisable(GL_TEXTURE_EXTERNAL_OES); 1639 glDisable(GL_TEXTURE_2D); 1640 glDisable(GL_BLEND); 1641 glColor4f(0,0,0,0); 1642 1643 const int32_t height = hw->getHeight(); 1644 Region::const_iterator it = region.begin(); 1645 Region::const_iterator const end = region.end(); 1646 while (it != end) { 1647 const Rect& r = *it++; 1648 GLfloat vertices[][2] = { 1649 { r.left, height - r.top }, 1650 { r.left, height - r.bottom }, 1651 { r.right, height - r.bottom }, 1652 { r.right, height - r.top } 1653 }; 1654 glVertexPointer(2, GL_FLOAT, 0, vertices); 1655 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1656 } 1657} 1658 1659ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1660 const sp<LayerBaseClient>& lbc) 1661{ 1662 // attach this layer to the client 1663 size_t name = client->attachLayer(lbc); 1664 1665 // add this layer to the current state list 1666 Mutex::Autolock _l(mStateLock); 1667 mCurrentState.layersSortedByZ.add(lbc); 1668 1669 return ssize_t(name); 1670} 1671 1672status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1673{ 1674 Mutex::Autolock _l(mStateLock); 1675 status_t err = purgatorizeLayer_l(layer); 1676 if (err == NO_ERROR) 1677 setTransactionFlags(eTransactionNeeded); 1678 return err; 1679} 1680 1681status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1682{ 1683 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1684 if (index >= 0) { 1685 mLayersRemoved = true; 1686 return NO_ERROR; 1687 } 1688 return status_t(index); 1689} 1690 1691status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1692{ 1693 // First add the layer to the purgatory list, which makes sure it won't 1694 // go away, then remove it from the main list (through a transaction). 1695 ssize_t err = removeLayer_l(layerBase); 1696 if (err >= 0) { 1697 mLayerPurgatory.add(layerBase); 1698 } 1699 1700 mLayersPendingRemoval.push(layerBase); 1701 1702 // it's possible that we don't find a layer, because it might 1703 // have been destroyed already -- this is not technically an error 1704 // from the user because there is a race between Client::destroySurface(), 1705 // ~Client() and ~ISurface(). 1706 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1707} 1708 1709uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1710{ 1711 return android_atomic_release_load(&mTransactionFlags); 1712} 1713 1714uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1715{ 1716 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1717} 1718 1719uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1720{ 1721 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1722 if ((old & flags)==0) { // wake the server up 1723 signalTransaction(); 1724 } 1725 return old; 1726} 1727 1728void SurfaceFlinger::setTransactionState( 1729 const Vector<ComposerState>& state, 1730 const Vector<DisplayState>& displays, 1731 uint32_t flags) 1732{ 1733 ATRACE_CALL(); 1734 Mutex::Autolock _l(mStateLock); 1735 uint32_t transactionFlags = 0; 1736 1737 if (flags & eAnimation) { 1738 // For window updates that are part of an animation we must wait for 1739 // previous animation "frames" to be handled. 1740 while (mAnimTransactionPending) { 1741 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1742 if (CC_UNLIKELY(err != NO_ERROR)) { 1743 // just in case something goes wrong in SF, return to the 1744 // caller after a few seconds. 1745 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out " 1746 "waiting for previous animation frame"); 1747 mAnimTransactionPending = false; 1748 break; 1749 } 1750 } 1751 } 1752 1753 size_t count = displays.size(); 1754 for (size_t i=0 ; i<count ; i++) { 1755 const DisplayState& s(displays[i]); 1756 transactionFlags |= setDisplayStateLocked(s); 1757 } 1758 1759 count = state.size(); 1760 for (size_t i=0 ; i<count ; i++) { 1761 const ComposerState& s(state[i]); 1762 // Here we need to check that the interface we're given is indeed 1763 // one of our own. A malicious client could give us a NULL 1764 // IInterface, or one of its own or even one of our own but a 1765 // different type. All these situations would cause us to crash. 1766 // 1767 // NOTE: it would be better to use RTTI as we could directly check 1768 // that we have a Client*. however, RTTI is disabled in Android. 1769 if (s.client != NULL) { 1770 sp<IBinder> binder = s.client->asBinder(); 1771 if (binder != NULL) { 1772 String16 desc(binder->getInterfaceDescriptor()); 1773 if (desc == ISurfaceComposerClient::descriptor) { 1774 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1775 transactionFlags |= setClientStateLocked(client, s.state); 1776 } 1777 } 1778 } 1779 } 1780 1781 if (transactionFlags) { 1782 // this triggers the transaction 1783 setTransactionFlags(transactionFlags); 1784 1785 // if this is a synchronous transaction, wait for it to take effect 1786 // before returning. 1787 if (flags & eSynchronous) { 1788 mTransactionPending = true; 1789 } 1790 if (flags & eAnimation) { 1791 mAnimTransactionPending = true; 1792 } 1793 while (mTransactionPending) { 1794 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1795 if (CC_UNLIKELY(err != NO_ERROR)) { 1796 // just in case something goes wrong in SF, return to the 1797 // called after a few seconds. 1798 ALOGW_IF(err == TIMED_OUT, "setTransactionState timed out!"); 1799 mTransactionPending = false; 1800 break; 1801 } 1802 } 1803 } 1804} 1805 1806uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1807{ 1808 ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token); 1809 if (dpyIdx < 0) 1810 return 0; 1811 1812 uint32_t flags = 0; 1813 DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx)); 1814 if (disp.isValid()) { 1815 const uint32_t what = s.what; 1816 if (what & DisplayState::eSurfaceChanged) { 1817 if (disp.surface->asBinder() != s.surface->asBinder()) { 1818 disp.surface = s.surface; 1819 flags |= eDisplayTransactionNeeded; 1820 } 1821 } 1822 if (what & DisplayState::eLayerStackChanged) { 1823 if (disp.layerStack != s.layerStack) { 1824 disp.layerStack = s.layerStack; 1825 flags |= eDisplayTransactionNeeded; 1826 } 1827 } 1828 if (what & DisplayState::eDisplayProjectionChanged) { 1829 if (disp.orientation != s.orientation) { 1830 disp.orientation = s.orientation; 1831 flags |= eDisplayTransactionNeeded; 1832 } 1833 if (disp.frame != s.frame) { 1834 disp.frame = s.frame; 1835 flags |= eDisplayTransactionNeeded; 1836 } 1837 if (disp.viewport != s.viewport) { 1838 disp.viewport = s.viewport; 1839 flags |= eDisplayTransactionNeeded; 1840 } 1841 } 1842 } 1843 return flags; 1844} 1845 1846uint32_t SurfaceFlinger::setClientStateLocked( 1847 const sp<Client>& client, 1848 const layer_state_t& s) 1849{ 1850 uint32_t flags = 0; 1851 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1852 if (layer != 0) { 1853 const uint32_t what = s.what; 1854 if (what & layer_state_t::ePositionChanged) { 1855 if (layer->setPosition(s.x, s.y)) 1856 flags |= eTraversalNeeded; 1857 } 1858 if (what & layer_state_t::eLayerChanged) { 1859 // NOTE: index needs to be calculated before we update the state 1860 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1861 if (layer->setLayer(s.z)) { 1862 mCurrentState.layersSortedByZ.removeAt(idx); 1863 mCurrentState.layersSortedByZ.add(layer); 1864 // we need traversal (state changed) 1865 // AND transaction (list changed) 1866 flags |= eTransactionNeeded|eTraversalNeeded; 1867 } 1868 } 1869 if (what & layer_state_t::eSizeChanged) { 1870 if (layer->setSize(s.w, s.h)) { 1871 flags |= eTraversalNeeded; 1872 } 1873 } 1874 if (what & layer_state_t::eAlphaChanged) { 1875 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1876 flags |= eTraversalNeeded; 1877 } 1878 if (what & layer_state_t::eMatrixChanged) { 1879 if (layer->setMatrix(s.matrix)) 1880 flags |= eTraversalNeeded; 1881 } 1882 if (what & layer_state_t::eTransparentRegionChanged) { 1883 if (layer->setTransparentRegionHint(s.transparentRegion)) 1884 flags |= eTraversalNeeded; 1885 } 1886 if (what & layer_state_t::eVisibilityChanged) { 1887 if (layer->setFlags(s.flags, s.mask)) 1888 flags |= eTraversalNeeded; 1889 } 1890 if (what & layer_state_t::eCropChanged) { 1891 if (layer->setCrop(s.crop)) 1892 flags |= eTraversalNeeded; 1893 } 1894 if (what & layer_state_t::eLayerStackChanged) { 1895 // NOTE: index needs to be calculated before we update the state 1896 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1897 if (layer->setLayerStack(s.layerStack)) { 1898 mCurrentState.layersSortedByZ.removeAt(idx); 1899 mCurrentState.layersSortedByZ.add(layer); 1900 // we need traversal (state changed) 1901 // AND transaction (list changed) 1902 flags |= eTransactionNeeded|eTraversalNeeded; 1903 } 1904 } 1905 } 1906 return flags; 1907} 1908 1909sp<ISurface> SurfaceFlinger::createLayer( 1910 ISurfaceComposerClient::surface_data_t* params, 1911 const String8& name, 1912 const sp<Client>& client, 1913 uint32_t w, uint32_t h, PixelFormat format, 1914 uint32_t flags) 1915{ 1916 sp<LayerBaseClient> layer; 1917 sp<ISurface> surfaceHandle; 1918 1919 if (int32_t(w|h) < 0) { 1920 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1921 int(w), int(h)); 1922 return surfaceHandle; 1923 } 1924 1925 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1926 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1927 case ISurfaceComposerClient::eFXSurfaceNormal: 1928 layer = createNormalLayer(client, w, h, flags, format); 1929 break; 1930 case ISurfaceComposerClient::eFXSurfaceBlur: 1931 case ISurfaceComposerClient::eFXSurfaceDim: 1932 layer = createDimLayer(client, w, h, flags); 1933 break; 1934 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1935 layer = createScreenshotLayer(client, w, h, flags); 1936 break; 1937 } 1938 1939 if (layer != 0) { 1940 layer->initStates(w, h, flags); 1941 layer->setName(name); 1942 ssize_t token = addClientLayer(client, layer); 1943 surfaceHandle = layer->getSurface(); 1944 if (surfaceHandle != 0) { 1945 params->token = token; 1946 params->identity = layer->getIdentity(); 1947 } 1948 setTransactionFlags(eTransactionNeeded); 1949 } 1950 1951 return surfaceHandle; 1952} 1953 1954sp<Layer> SurfaceFlinger::createNormalLayer( 1955 const sp<Client>& client, 1956 uint32_t w, uint32_t h, uint32_t flags, 1957 PixelFormat& format) 1958{ 1959 // initialize the surfaces 1960 switch (format) { 1961 case PIXEL_FORMAT_TRANSPARENT: 1962 case PIXEL_FORMAT_TRANSLUCENT: 1963 format = PIXEL_FORMAT_RGBA_8888; 1964 break; 1965 case PIXEL_FORMAT_OPAQUE: 1966#ifdef NO_RGBX_8888 1967 format = PIXEL_FORMAT_RGB_565; 1968#else 1969 format = PIXEL_FORMAT_RGBX_8888; 1970#endif 1971 break; 1972 } 1973 1974#ifdef NO_RGBX_8888 1975 if (format == PIXEL_FORMAT_RGBX_8888) 1976 format = PIXEL_FORMAT_RGBA_8888; 1977#endif 1978 1979 sp<Layer> layer = new Layer(this, client); 1980 status_t err = layer->setBuffers(w, h, format, flags); 1981 if (CC_LIKELY(err != NO_ERROR)) { 1982 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1983 layer.clear(); 1984 } 1985 return layer; 1986} 1987 1988sp<LayerDim> SurfaceFlinger::createDimLayer( 1989 const sp<Client>& client, 1990 uint32_t w, uint32_t h, uint32_t flags) 1991{ 1992 sp<LayerDim> layer = new LayerDim(this, client); 1993 return layer; 1994} 1995 1996sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1997 const sp<Client>& client, 1998 uint32_t w, uint32_t h, uint32_t flags) 1999{ 2000 sp<LayerScreenshot> layer = new LayerScreenshot(this, client); 2001 return layer; 2002} 2003 2004status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 2005{ 2006 /* 2007 * called by the window manager, when a surface should be marked for 2008 * destruction. 2009 * 2010 * The surface is removed from the current and drawing lists, but placed 2011 * in the purgatory queue, so it's not destroyed right-away (we need 2012 * to wait for all client's references to go away first). 2013 */ 2014 2015 status_t err = NAME_NOT_FOUND; 2016 Mutex::Autolock _l(mStateLock); 2017 sp<LayerBaseClient> layer = client->getLayerUser(sid); 2018 2019 if (layer != 0) { 2020 err = purgatorizeLayer_l(layer); 2021 if (err == NO_ERROR) { 2022 setTransactionFlags(eTransactionNeeded); 2023 } 2024 } 2025 return err; 2026} 2027 2028status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 2029{ 2030 // called by ~ISurface() when all references are gone 2031 status_t err = NO_ERROR; 2032 sp<LayerBaseClient> l(layer.promote()); 2033 if (l != NULL) { 2034 Mutex::Autolock _l(mStateLock); 2035 err = removeLayer_l(l); 2036 if (err == NAME_NOT_FOUND) { 2037 // The surface wasn't in the current list, which means it was 2038 // removed already, which means it is in the purgatory, 2039 // and need to be removed from there. 2040 ssize_t idx = mLayerPurgatory.remove(l); 2041 ALOGE_IF(idx < 0, 2042 "layer=%p is not in the purgatory list", l.get()); 2043 } 2044 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 2045 "error removing layer=%p (%s)", l.get(), strerror(-err)); 2046 } 2047 return err; 2048} 2049 2050// --------------------------------------------------------------------------- 2051 2052void SurfaceFlinger::onInitializeDisplays() { 2053 // reset screen orientation 2054 Vector<ComposerState> state; 2055 Vector<DisplayState> displays; 2056 DisplayState d; 2057 d.what = DisplayState::eDisplayProjectionChanged; 2058 d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]; 2059 d.orientation = DisplayState::eOrientationDefault; 2060 d.frame.makeInvalid(); 2061 d.viewport.makeInvalid(); 2062 displays.add(d); 2063 setTransactionState(state, displays, 0); 2064 onScreenAcquired(getDefaultDisplayDevice()); 2065} 2066 2067void SurfaceFlinger::initializeDisplays() { 2068 class MessageScreenInitialized : public MessageBase { 2069 SurfaceFlinger* flinger; 2070 public: 2071 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 2072 virtual bool handler() { 2073 flinger->onInitializeDisplays(); 2074 return true; 2075 } 2076 }; 2077 sp<MessageBase> msg = new MessageScreenInitialized(this); 2078 postMessageAsync(msg); // we may be called from main thread, use async message 2079} 2080 2081 2082void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 2083 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 2084 if (hw->isScreenAcquired()) { 2085 // this is expected, e.g. when power manager wakes up during boot 2086 ALOGD(" screen was previously acquired"); 2087 return; 2088 } 2089 2090 hw->acquireScreen(); 2091 int32_t type = hw->getDisplayType(); 2092 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2093 // built-in display, tell the HWC 2094 getHwComposer().acquire(type); 2095 2096 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2097 // FIXME: eventthread only knows about the main display right now 2098 mEventThread->onScreenAcquired(); 2099 } 2100 } 2101 mVisibleRegionsDirty = true; 2102 repaintEverything(); 2103} 2104 2105void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2106 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2107 if (!hw->isScreenAcquired()) { 2108 ALOGD(" screen was previously released"); 2109 return; 2110 } 2111 2112 hw->releaseScreen(); 2113 int32_t type = hw->getDisplayType(); 2114 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2115 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2116 // FIXME: eventthread only knows about the main display right now 2117 mEventThread->onScreenReleased(); 2118 } 2119 2120 // built-in display, tell the HWC 2121 getHwComposer().release(type); 2122 } 2123 mVisibleRegionsDirty = true; 2124 // from this point on, SF will stop drawing on this display 2125} 2126 2127void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2128 class MessageScreenAcquired : public MessageBase { 2129 SurfaceFlinger& mFlinger; 2130 sp<IBinder> mDisplay; 2131 public: 2132 MessageScreenAcquired(SurfaceFlinger& flinger, 2133 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2134 virtual bool handler() { 2135 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2136 if (hw == NULL) { 2137 ALOGE("Attempt to unblank null display %p", mDisplay.get()); 2138 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2139 ALOGW("Attempt to unblank virtual display"); 2140 } else { 2141 mFlinger.onScreenAcquired(hw); 2142 } 2143 return true; 2144 } 2145 }; 2146 sp<MessageBase> msg = new MessageScreenAcquired(*this, display); 2147 postMessageSync(msg); 2148} 2149 2150void SurfaceFlinger::blank(const sp<IBinder>& display) { 2151 class MessageScreenReleased : public MessageBase { 2152 SurfaceFlinger& mFlinger; 2153 sp<IBinder> mDisplay; 2154 public: 2155 MessageScreenReleased(SurfaceFlinger& flinger, 2156 const sp<IBinder>& disp) : mFlinger(flinger), mDisplay(disp) { } 2157 virtual bool handler() { 2158 const sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay)); 2159 if (hw == NULL) { 2160 ALOGE("Attempt to blank null display %p", mDisplay.get()); 2161 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2162 ALOGW("Attempt to blank virtual display"); 2163 } else { 2164 mFlinger.onScreenReleased(hw); 2165 } 2166 return true; 2167 } 2168 }; 2169 sp<MessageBase> msg = new MessageScreenReleased(*this, display); 2170 postMessageSync(msg); 2171} 2172 2173// --------------------------------------------------------------------------- 2174 2175status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2176{ 2177 const size_t SIZE = 4096; 2178 char buffer[SIZE]; 2179 String8 result; 2180 2181 if (!PermissionCache::checkCallingPermission(sDump)) { 2182 snprintf(buffer, SIZE, "Permission Denial: " 2183 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2184 IPCThreadState::self()->getCallingPid(), 2185 IPCThreadState::self()->getCallingUid()); 2186 result.append(buffer); 2187 } else { 2188 // Try to get the main lock, but don't insist if we can't 2189 // (this would indicate SF is stuck, but we want to be able to 2190 // print something in dumpsys). 2191 int retry = 3; 2192 while (mStateLock.tryLock()<0 && --retry>=0) { 2193 usleep(1000000); 2194 } 2195 const bool locked(retry >= 0); 2196 if (!locked) { 2197 snprintf(buffer, SIZE, 2198 "SurfaceFlinger appears to be unresponsive, " 2199 "dumping anyways (no locks held)\n"); 2200 result.append(buffer); 2201 } 2202 2203 bool dumpAll = true; 2204 size_t index = 0; 2205 size_t numArgs = args.size(); 2206 if (numArgs) { 2207 if ((index < numArgs) && 2208 (args[index] == String16("--list"))) { 2209 index++; 2210 listLayersLocked(args, index, result, buffer, SIZE); 2211 dumpAll = false; 2212 } 2213 2214 if ((index < numArgs) && 2215 (args[index] == String16("--latency"))) { 2216 index++; 2217 dumpStatsLocked(args, index, result, buffer, SIZE); 2218 dumpAll = false; 2219 } 2220 2221 if ((index < numArgs) && 2222 (args[index] == String16("--latency-clear"))) { 2223 index++; 2224 clearStatsLocked(args, index, result, buffer, SIZE); 2225 dumpAll = false; 2226 } 2227 } 2228 2229 if (dumpAll) { 2230 dumpAllLocked(result, buffer, SIZE); 2231 } 2232 2233 if (locked) { 2234 mStateLock.unlock(); 2235 } 2236 } 2237 write(fd, result.string(), result.size()); 2238 return NO_ERROR; 2239} 2240 2241void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2242 String8& result, char* buffer, size_t SIZE) const 2243{ 2244 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2245 const size_t count = currentLayers.size(); 2246 for (size_t i=0 ; i<count ; i++) { 2247 const sp<LayerBase>& layer(currentLayers[i]); 2248 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2249 result.append(buffer); 2250 } 2251} 2252 2253void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2254 String8& result, char* buffer, size_t SIZE) const 2255{ 2256 String8 name; 2257 if (index < args.size()) { 2258 name = String8(args[index]); 2259 index++; 2260 } 2261 2262 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2263 const size_t count = currentLayers.size(); 2264 for (size_t i=0 ; i<count ; i++) { 2265 const sp<LayerBase>& layer(currentLayers[i]); 2266 if (name.isEmpty()) { 2267 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2268 result.append(buffer); 2269 } 2270 if (name.isEmpty() || (name == layer->getName())) { 2271 layer->dumpStats(result, buffer, SIZE); 2272 } 2273 } 2274} 2275 2276void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2277 String8& result, char* buffer, size_t SIZE) const 2278{ 2279 String8 name; 2280 if (index < args.size()) { 2281 name = String8(args[index]); 2282 index++; 2283 } 2284 2285 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2286 const size_t count = currentLayers.size(); 2287 for (size_t i=0 ; i<count ; i++) { 2288 const sp<LayerBase>& layer(currentLayers[i]); 2289 if (name.isEmpty() || (name == layer->getName())) { 2290 layer->clearStats(); 2291 } 2292 } 2293} 2294 2295/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2296{ 2297 static const char* config = 2298 " [sf" 2299#ifdef NO_RGBX_8888 2300 " NO_RGBX_8888" 2301#endif 2302#ifdef HAS_CONTEXT_PRIORITY 2303 " HAS_CONTEXT_PRIORITY" 2304#endif 2305#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2306 " NEVER_DEFAULT_TO_ASYNC_MODE" 2307#endif 2308#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2309 " TARGET_DISABLE_TRIPLE_BUFFERING" 2310#endif 2311 "]"; 2312 result.append(config); 2313} 2314 2315void SurfaceFlinger::dumpAllLocked( 2316 String8& result, char* buffer, size_t SIZE) const 2317{ 2318 // figure out if we're stuck somewhere 2319 const nsecs_t now = systemTime(); 2320 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2321 const nsecs_t inTransaction(mDebugInTransaction); 2322 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2323 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2324 2325 /* 2326 * Dump library configuration. 2327 */ 2328 result.append("Build configuration:"); 2329 appendSfConfigString(result); 2330 appendUiConfigString(result); 2331 appendGuiConfigString(result); 2332 result.append("\n"); 2333 2334 /* 2335 * Dump the visible layer list 2336 */ 2337 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2338 const size_t count = currentLayers.size(); 2339 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2340 result.append(buffer); 2341 for (size_t i=0 ; i<count ; i++) { 2342 const sp<LayerBase>& layer(currentLayers[i]); 2343 layer->dump(result, buffer, SIZE); 2344 } 2345 2346 /* 2347 * Dump the layers in the purgatory 2348 */ 2349 2350 const size_t purgatorySize = mLayerPurgatory.size(); 2351 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 2352 result.append(buffer); 2353 for (size_t i=0 ; i<purgatorySize ; i++) { 2354 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 2355 layer->shortDump(result, buffer, SIZE); 2356 } 2357 2358 /* 2359 * Dump Display state 2360 */ 2361 2362 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2363 result.append(buffer); 2364 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2365 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2366 hw->dump(result, buffer, SIZE); 2367 } 2368 2369 /* 2370 * Dump SurfaceFlinger global state 2371 */ 2372 2373 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2374 result.append(buffer); 2375 2376 HWComposer& hwc(getHwComposer()); 2377 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2378 const GLExtensions& extensions(GLExtensions::getInstance()); 2379 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2380 extensions.getVendor(), 2381 extensions.getRenderer(), 2382 extensions.getVersion()); 2383 result.append(buffer); 2384 2385 snprintf(buffer, SIZE, "EGL : %s\n", 2386 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2387 result.append(buffer); 2388 2389 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2390 result.append(buffer); 2391 2392 hw->undefinedRegion.dump(result, "undefinedRegion"); 2393 snprintf(buffer, SIZE, 2394 " orientation=%d, canDraw=%d\n", 2395 hw->getOrientation(), hw->canDraw()); 2396 result.append(buffer); 2397 snprintf(buffer, SIZE, 2398 " last eglSwapBuffers() time: %f us\n" 2399 " last transaction time : %f us\n" 2400 " transaction-flags : %08x\n" 2401 " refresh-rate : %f fps\n" 2402 " x-dpi : %f\n" 2403 " y-dpi : %f\n", 2404 mLastSwapBufferTime/1000.0, 2405 mLastTransactionTime/1000.0, 2406 mTransactionFlags, 2407 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2408 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2409 hwc.getDpiY(HWC_DISPLAY_PRIMARY)); 2410 result.append(buffer); 2411 2412 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2413 inSwapBuffersDuration/1000.0); 2414 result.append(buffer); 2415 2416 snprintf(buffer, SIZE, " transaction time: %f us\n", 2417 inTransactionDuration/1000.0); 2418 result.append(buffer); 2419 2420 /* 2421 * VSYNC state 2422 */ 2423 mEventThread->dump(result, buffer, SIZE); 2424 2425 /* 2426 * Dump HWComposer state 2427 */ 2428 snprintf(buffer, SIZE, "h/w composer state:\n"); 2429 result.append(buffer); 2430 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2431 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2432 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2433 result.append(buffer); 2434 hwc.dump(result, buffer, SIZE); 2435 2436 /* 2437 * Dump gralloc state 2438 */ 2439 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2440 alloc.dump(result); 2441} 2442 2443const Vector< sp<LayerBase> >& 2444SurfaceFlinger::getLayerSortedByZForHwcDisplay(int disp) { 2445 // Note: mStateLock is held here 2446 return getDisplayDevice( getBuiltInDisplay(disp) )->getVisibleLayersSortedByZ(); 2447} 2448 2449bool SurfaceFlinger::startDdmConnection() 2450{ 2451 void* libddmconnection_dso = 2452 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2453 if (!libddmconnection_dso) { 2454 return false; 2455 } 2456 void (*DdmConnection_start)(const char* name); 2457 DdmConnection_start = 2458 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2459 if (!DdmConnection_start) { 2460 dlclose(libddmconnection_dso); 2461 return false; 2462 } 2463 (*DdmConnection_start)(getServiceName()); 2464 return true; 2465} 2466 2467status_t SurfaceFlinger::onTransact( 2468 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2469{ 2470 switch (code) { 2471 case CREATE_CONNECTION: 2472 case SET_TRANSACTION_STATE: 2473 case BOOT_FINISHED: 2474 case BLANK: 2475 case UNBLANK: 2476 { 2477 // codes that require permission check 2478 IPCThreadState* ipc = IPCThreadState::self(); 2479 const int pid = ipc->getCallingPid(); 2480 const int uid = ipc->getCallingUid(); 2481 if ((uid != AID_GRAPHICS) && 2482 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2483 ALOGE("Permission Denial: " 2484 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2485 return PERMISSION_DENIED; 2486 } 2487 break; 2488 } 2489 case CAPTURE_SCREEN: 2490 { 2491 // codes that require permission check 2492 IPCThreadState* ipc = IPCThreadState::self(); 2493 const int pid = ipc->getCallingPid(); 2494 const int uid = ipc->getCallingUid(); 2495 if ((uid != AID_GRAPHICS) && 2496 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2497 ALOGE("Permission Denial: " 2498 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2499 return PERMISSION_DENIED; 2500 } 2501 break; 2502 } 2503 } 2504 2505 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2506 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2507 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2508 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2509 IPCThreadState* ipc = IPCThreadState::self(); 2510 const int pid = ipc->getCallingPid(); 2511 const int uid = ipc->getCallingUid(); 2512 ALOGE("Permission Denial: " 2513 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2514 return PERMISSION_DENIED; 2515 } 2516 int n; 2517 switch (code) { 2518 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2519 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2520 return NO_ERROR; 2521 case 1002: // SHOW_UPDATES 2522 n = data.readInt32(); 2523 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2524 invalidateHwcGeometry(); 2525 repaintEverything(); 2526 return NO_ERROR; 2527 case 1004:{ // repaint everything 2528 repaintEverything(); 2529 return NO_ERROR; 2530 } 2531 case 1005:{ // force transaction 2532 setTransactionFlags( 2533 eTransactionNeeded| 2534 eDisplayTransactionNeeded| 2535 eTraversalNeeded); 2536 return NO_ERROR; 2537 } 2538 case 1006:{ // send empty update 2539 signalRefresh(); 2540 return NO_ERROR; 2541 } 2542 case 1008: // toggle use of hw composer 2543 n = data.readInt32(); 2544 mDebugDisableHWC = n ? 1 : 0; 2545 invalidateHwcGeometry(); 2546 repaintEverything(); 2547 return NO_ERROR; 2548 case 1009: // toggle use of transform hint 2549 n = data.readInt32(); 2550 mDebugDisableTransformHint = n ? 1 : 0; 2551 invalidateHwcGeometry(); 2552 repaintEverything(); 2553 return NO_ERROR; 2554 case 1010: // interrogate. 2555 reply->writeInt32(0); 2556 reply->writeInt32(0); 2557 reply->writeInt32(mDebugRegion); 2558 reply->writeInt32(0); 2559 reply->writeInt32(mDebugDisableHWC); 2560 return NO_ERROR; 2561 case 1013: { 2562 Mutex::Autolock _l(mStateLock); 2563 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2564 reply->writeInt32(hw->getPageFlipCount()); 2565 } 2566 return NO_ERROR; 2567 } 2568 } 2569 return err; 2570} 2571 2572void SurfaceFlinger::repaintEverything() { 2573 android_atomic_or(1, &mRepaintEverything); 2574 signalTransaction(); 2575} 2576 2577// --------------------------------------------------------------------------- 2578 2579status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack, 2580 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2581{ 2582 Mutex::Autolock _l(mStateLock); 2583 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut); 2584} 2585 2586status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack, 2587 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2588{ 2589 ATRACE_CALL(); 2590 2591 if (!GLExtensions::getInstance().haveFramebufferObject()) 2592 return INVALID_OPERATION; 2593 2594 // get screen geometry 2595 // FIXME: figure out what it means to have a screenshot texture w/ multi-display 2596 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2597 const uint32_t hw_w = hw->getWidth(); 2598 const uint32_t hw_h = hw->getHeight(); 2599 GLfloat u = 1; 2600 GLfloat v = 1; 2601 2602 // make sure to clear all GL error flags 2603 while ( glGetError() != GL_NO_ERROR ) ; 2604 2605 // create a FBO 2606 GLuint name, tname; 2607 glGenTextures(1, &tname); 2608 glBindTexture(GL_TEXTURE_2D, tname); 2609 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2610 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2611 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2612 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2613 if (glGetError() != GL_NO_ERROR) { 2614 while ( glGetError() != GL_NO_ERROR ) ; 2615 GLint tw = (2 << (31 - clz(hw_w))); 2616 GLint th = (2 << (31 - clz(hw_h))); 2617 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2618 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2619 u = GLfloat(hw_w) / tw; 2620 v = GLfloat(hw_h) / th; 2621 } 2622 glGenFramebuffersOES(1, &name); 2623 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2624 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2625 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2626 2627 DisplayDevice::setViewportAndProjection(hw); 2628 2629 // redraw the screen entirely... 2630 glDisable(GL_TEXTURE_EXTERNAL_OES); 2631 glDisable(GL_TEXTURE_2D); 2632 glClearColor(0,0,0,1); 2633 glClear(GL_COLOR_BUFFER_BIT); 2634 glMatrixMode(GL_MODELVIEW); 2635 glLoadIdentity(); 2636 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2637 const size_t count = layers.size(); 2638 for (size_t i=0 ; i<count ; ++i) { 2639 const sp<LayerBase>& layer(layers[i]); 2640 layer->draw(hw); 2641 } 2642 2643 hw->compositionComplete(); 2644 2645 // back to main framebuffer 2646 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2647 glDeleteFramebuffersOES(1, &name); 2648 2649 *textureName = tname; 2650 *uOut = u; 2651 *vOut = v; 2652 return NO_ERROR; 2653} 2654 2655// --------------------------------------------------------------------------- 2656 2657status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display, 2658 sp<IMemoryHeap>* heap, 2659 uint32_t* w, uint32_t* h, PixelFormat* f, 2660 uint32_t sw, uint32_t sh, 2661 uint32_t minLayerZ, uint32_t maxLayerZ) 2662{ 2663 ATRACE_CALL(); 2664 2665 status_t result = PERMISSION_DENIED; 2666 2667 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2668 return INVALID_OPERATION; 2669 } 2670 2671 // get screen geometry 2672 sp<const DisplayDevice> hw(getDisplayDevice(display)); 2673 const uint32_t hw_w = hw->getWidth(); 2674 const uint32_t hw_h = hw->getHeight(); 2675 2676 // if we have secure windows on this display, never allow the screen capture 2677 if (hw->getSecureLayerVisible()) { 2678 ALOGW("FB is protected: PERMISSION_DENIED"); 2679 return PERMISSION_DENIED; 2680 } 2681 2682 if ((sw > hw_w) || (sh > hw_h)) { 2683 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2684 return BAD_VALUE; 2685 } 2686 2687 sw = (!sw) ? hw_w : sw; 2688 sh = (!sh) ? hw_h : sh; 2689 const size_t size = sw * sh * 4; 2690 const bool filtering = sw != hw_w || sh != hw_h; 2691 2692// ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2693// sw, sh, minLayerZ, maxLayerZ); 2694 2695 // make sure to clear all GL error flags 2696 while ( glGetError() != GL_NO_ERROR ) ; 2697 2698 // create a FBO 2699 GLuint name, tname; 2700 glGenRenderbuffersOES(1, &tname); 2701 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2702 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2703 2704 glGenFramebuffersOES(1, &name); 2705 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2706 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2707 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2708 2709 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2710 2711 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2712 2713 // invert everything, b/c glReadPixel() below will invert the FB 2714 GLint viewport[4]; 2715 glGetIntegerv(GL_VIEWPORT, viewport); 2716 glViewport(0, 0, sw, sh); 2717 glMatrixMode(GL_PROJECTION); 2718 glPushMatrix(); 2719 glLoadIdentity(); 2720 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2721 glMatrixMode(GL_MODELVIEW); 2722 2723 // redraw the screen entirely... 2724 glClearColor(0,0,0,1); 2725 glClear(GL_COLOR_BUFFER_BIT); 2726 2727 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2728 const size_t count = layers.size(); 2729 for (size_t i=0 ; i<count ; ++i) { 2730 const sp<LayerBase>& layer(layers[i]); 2731 const uint32_t z = layer->drawingState().z; 2732 if (z >= minLayerZ && z <= maxLayerZ) { 2733 if (filtering) layer->setFiltering(true); 2734 layer->draw(hw); 2735 if (filtering) layer->setFiltering(false); 2736 } 2737 } 2738 2739 // check for errors and return screen capture 2740 if (glGetError() != GL_NO_ERROR) { 2741 // error while rendering 2742 result = INVALID_OPERATION; 2743 } else { 2744 // allocate shared memory large enough to hold the 2745 // screen capture 2746 sp<MemoryHeapBase> base( 2747 new MemoryHeapBase(size, 0, "screen-capture") ); 2748 void* const ptr = base->getBase(); 2749 if (ptr != MAP_FAILED) { 2750 // capture the screen with glReadPixels() 2751 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2752 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2753 if (glGetError() == GL_NO_ERROR) { 2754 *heap = base; 2755 *w = sw; 2756 *h = sh; 2757 *f = PIXEL_FORMAT_RGBA_8888; 2758 result = NO_ERROR; 2759 } 2760 } else { 2761 result = NO_MEMORY; 2762 } 2763 } 2764 glViewport(viewport[0], viewport[1], viewport[2], viewport[3]); 2765 glMatrixMode(GL_PROJECTION); 2766 glPopMatrix(); 2767 glMatrixMode(GL_MODELVIEW); 2768 } else { 2769 result = BAD_VALUE; 2770 } 2771 2772 // release FBO resources 2773 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2774 glDeleteRenderbuffersOES(1, &tname); 2775 glDeleteFramebuffersOES(1, &name); 2776 2777 hw->compositionComplete(); 2778 2779// ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2780 2781 return result; 2782} 2783 2784 2785status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2786 sp<IMemoryHeap>* heap, 2787 uint32_t* width, uint32_t* height, PixelFormat* format, 2788 uint32_t sw, uint32_t sh, 2789 uint32_t minLayerZ, uint32_t maxLayerZ) 2790{ 2791 if (CC_UNLIKELY(display == 0)) 2792 return BAD_VALUE; 2793 2794 if (!GLExtensions::getInstance().haveFramebufferObject()) 2795 return INVALID_OPERATION; 2796 2797 class MessageCaptureScreen : public MessageBase { 2798 SurfaceFlinger* flinger; 2799 sp<IBinder> display; 2800 sp<IMemoryHeap>* heap; 2801 uint32_t* w; 2802 uint32_t* h; 2803 PixelFormat* f; 2804 uint32_t sw; 2805 uint32_t sh; 2806 uint32_t minLayerZ; 2807 uint32_t maxLayerZ; 2808 status_t result; 2809 public: 2810 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display, 2811 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2812 uint32_t sw, uint32_t sh, 2813 uint32_t minLayerZ, uint32_t maxLayerZ) 2814 : flinger(flinger), display(display), 2815 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2816 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2817 result(PERMISSION_DENIED) 2818 { 2819 } 2820 status_t getResult() const { 2821 return result; 2822 } 2823 virtual bool handler() { 2824 Mutex::Autolock _l(flinger->mStateLock); 2825 result = flinger->captureScreenImplLocked(display, 2826 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2827 return true; 2828 } 2829 }; 2830 2831 sp<MessageBase> msg = new MessageCaptureScreen(this, 2832 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2833 status_t res = postMessageSync(msg); 2834 if (res == NO_ERROR) { 2835 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2836 } 2837 return res; 2838} 2839 2840// --------------------------------------------------------------------------- 2841 2842SurfaceFlinger::LayerVector::LayerVector() { 2843} 2844 2845SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2846 : SortedVector<sp<LayerBase> >(rhs) { 2847} 2848 2849int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2850 const void* rhs) const 2851{ 2852 // sort layers per layer-stack, then by z-order and finally by sequence 2853 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2854 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2855 2856 uint32_t ls = l->currentState().layerStack; 2857 uint32_t rs = r->currentState().layerStack; 2858 if (ls != rs) 2859 return ls - rs; 2860 2861 uint32_t lz = l->currentState().z; 2862 uint32_t rz = r->currentState().z; 2863 if (lz != rz) 2864 return lz - rz; 2865 2866 return l->sequence - r->sequence; 2867} 2868 2869// --------------------------------------------------------------------------- 2870 2871SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2872 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2873} 2874 2875SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2876 : type(type), layerStack(0), orientation(0) { 2877 viewport.makeInvalid(); 2878 frame.makeInvalid(); 2879} 2880 2881// --------------------------------------------------------------------------- 2882 2883}; // namespace android 2884