SurfaceFlinger.cpp revision 81cd5d3b94d21253a0be925f4ae58cc7f4afeef7
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <stdint.h> 20#include <sys/types.h> 21#include <errno.h> 22#include <math.h> 23#include <dlfcn.h> 24 25#include <EGL/egl.h> 26#include <GLES/gl.h> 27 28#include <cutils/log.h> 29#include <cutils/properties.h> 30 31#include <binder/IPCThreadState.h> 32#include <binder/IServiceManager.h> 33#include <binder/MemoryHeapBase.h> 34#include <binder/PermissionCache.h> 35 36#include <ui/DisplayInfo.h> 37 38#include <gui/BitTube.h> 39#include <gui/BufferQueue.h> 40#include <gui/GuiConfig.h> 41#include <gui/IDisplayEventConnection.h> 42#include <gui/SurfaceTextureClient.h> 43 44#include <ui/GraphicBufferAllocator.h> 45#include <ui/PixelFormat.h> 46#include <ui/UiConfig.h> 47 48#include <utils/misc.h> 49#include <utils/String8.h> 50#include <utils/String16.h> 51#include <utils/StopWatch.h> 52#include <utils/Trace.h> 53 54#include <private/android_filesystem_config.h> 55 56#include "clz.h" 57#include "DdmConnection.h" 58#include "DisplayDevice.h" 59#include "Client.h" 60#include "EventThread.h" 61#include "GLExtensions.h" 62#include "Layer.h" 63#include "LayerDim.h" 64#include "LayerScreenshot.h" 65#include "SurfaceFlinger.h" 66 67#include "DisplayHardware/FramebufferSurface.h" 68#include "DisplayHardware/GraphicBufferAlloc.h" 69#include "DisplayHardware/HWComposer.h" 70 71 72#define EGL_VERSION_HW_ANDROID 0x3143 73 74#define DISPLAY_COUNT 1 75 76namespace android { 77// --------------------------------------------------------------------------- 78 79const String16 sHardwareTest("android.permission.HARDWARE_TEST"); 80const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"); 81const String16 sReadFramebuffer("android.permission.READ_FRAME_BUFFER"); 82const String16 sDump("android.permission.DUMP"); 83 84// --------------------------------------------------------------------------- 85 86SurfaceFlinger::SurfaceFlinger() 87 : BnSurfaceComposer(), Thread(false), 88 mTransactionFlags(0), 89 mTransationPending(false), 90 mLayersRemoved(false), 91 mRepaintEverything(0), 92 mBootTime(systemTime()), 93 mVisibleRegionsDirty(false), 94 mHwWorkListDirty(false), 95 mDebugRegion(0), 96 mDebugDDMS(0), 97 mDebugDisableHWC(0), 98 mDebugDisableTransformHint(0), 99 mDebugInSwapBuffers(0), 100 mLastSwapBufferTime(0), 101 mDebugInTransaction(0), 102 mLastTransactionTime(0), 103 mBootFinished(false) 104{ 105 ALOGI("SurfaceFlinger is starting"); 106 107 // debugging stuff... 108 char value[PROPERTY_VALUE_MAX]; 109 110 property_get("debug.sf.showupdates", value, "0"); 111 mDebugRegion = atoi(value); 112 113 property_get("debug.sf.ddms", value, "0"); 114 mDebugDDMS = atoi(value); 115 if (mDebugDDMS) { 116 if (!startDdmConnection()) { 117 // start failed, and DDMS debugging not enabled 118 mDebugDDMS = 0; 119 } 120 } 121 ALOGI_IF(mDebugRegion, "showupdates enabled"); 122 ALOGI_IF(mDebugDDMS, "DDMS debugging enabled"); 123} 124 125void SurfaceFlinger::onFirstRef() 126{ 127 mEventQueue.init(this); 128 129 run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY); 130 131 // Wait for the main thread to be done with its initialization 132 mReadyToRunBarrier.wait(); 133} 134 135 136SurfaceFlinger::~SurfaceFlinger() 137{ 138 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 139 eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); 140 eglTerminate(display); 141} 142 143void SurfaceFlinger::binderDied(const wp<IBinder>& who) 144{ 145 // the window manager died on us. prepare its eulogy. 146 147 // restore initial conditions (default device unblank, etc) 148 initializeDisplays(); 149 150 // restart the boot-animation 151 startBootAnim(); 152} 153 154sp<ISurfaceComposerClient> SurfaceFlinger::createConnection() 155{ 156 sp<ISurfaceComposerClient> bclient; 157 sp<Client> client(new Client(this)); 158 status_t err = client->initCheck(); 159 if (err == NO_ERROR) { 160 bclient = client; 161 } 162 return bclient; 163} 164 165sp<IBinder> SurfaceFlinger::createDisplay(const String8& displayName) 166{ 167 class DisplayToken : public BBinder { 168 sp<SurfaceFlinger> flinger; 169 virtual ~DisplayToken() { 170 // no more references, this display must be terminated 171 Mutex::Autolock _l(flinger->mStateLock); 172 flinger->mCurrentState.displays.removeItem(this); 173 flinger->setTransactionFlags(eDisplayTransactionNeeded); 174 } 175 public: 176 DisplayToken(const sp<SurfaceFlinger>& flinger) 177 : flinger(flinger) { 178 } 179 }; 180 181 sp<BBinder> token = new DisplayToken(this); 182 183 Mutex::Autolock _l(mStateLock); 184 DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL); 185 info.displayName = displayName; 186 mCurrentState.displays.add(token, info); 187 188 return token; 189} 190 191sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) { 192 if (uint32_t(id) >= DisplayDevice::NUM_DISPLAY_TYPES) { 193 ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id); 194 return NULL; 195 } 196 return mDefaultDisplays[id]; 197} 198 199sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc() 200{ 201 sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc()); 202 return gba; 203} 204 205void SurfaceFlinger::bootFinished() 206{ 207 const nsecs_t now = systemTime(); 208 const nsecs_t duration = now - mBootTime; 209 ALOGI("Boot is finished (%ld ms)", long(ns2ms(duration)) ); 210 mBootFinished = true; 211 212 // wait patiently for the window manager death 213 const String16 name("window"); 214 sp<IBinder> window(defaultServiceManager()->getService(name)); 215 if (window != 0) { 216 window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); 217 } 218 219 // stop boot animation 220 // formerly we would just kill the process, but we now ask it to exit so it 221 // can choose where to stop the animation. 222 property_set("service.bootanim.exit", "1"); 223} 224 225void SurfaceFlinger::deleteTextureAsync(GLuint texture) { 226 class MessageDestroyGLTexture : public MessageBase { 227 GLuint texture; 228 public: 229 MessageDestroyGLTexture(GLuint texture) 230 : texture(texture) { 231 } 232 virtual bool handler() { 233 glDeleteTextures(1, &texture); 234 return true; 235 } 236 }; 237 postMessageAsync(new MessageDestroyGLTexture(texture)); 238} 239 240status_t SurfaceFlinger::selectConfigForAttribute( 241 EGLDisplay dpy, 242 EGLint const* attrs, 243 EGLint attribute, EGLint wanted, 244 EGLConfig* outConfig) 245{ 246 EGLConfig config = NULL; 247 EGLint numConfigs = -1, n=0; 248 eglGetConfigs(dpy, NULL, 0, &numConfigs); 249 EGLConfig* const configs = new EGLConfig[numConfigs]; 250 eglChooseConfig(dpy, attrs, configs, numConfigs, &n); 251 252 if (n) { 253 if (attribute != EGL_NONE) { 254 for (int i=0 ; i<n ; i++) { 255 EGLint value = 0; 256 eglGetConfigAttrib(dpy, configs[i], attribute, &value); 257 if (wanted == value) { 258 *outConfig = configs[i]; 259 delete [] configs; 260 return NO_ERROR; 261 } 262 } 263 } else { 264 // just pick the first one 265 *outConfig = configs[0]; 266 delete [] configs; 267 return NO_ERROR; 268 } 269 } 270 delete [] configs; 271 return NAME_NOT_FOUND; 272} 273 274class EGLAttributeVector { 275 struct Attribute; 276 class Adder; 277 friend class Adder; 278 KeyedVector<Attribute, EGLint> mList; 279 struct Attribute { 280 Attribute() {}; 281 Attribute(EGLint v) : v(v) { } 282 EGLint v; 283 bool operator < (const Attribute& other) const { 284 // this places EGL_NONE at the end 285 EGLint lhs(v); 286 EGLint rhs(other.v); 287 if (lhs == EGL_NONE) lhs = 0x7FFFFFFF; 288 if (rhs == EGL_NONE) rhs = 0x7FFFFFFF; 289 return lhs < rhs; 290 } 291 }; 292 class Adder { 293 friend class EGLAttributeVector; 294 EGLAttributeVector& v; 295 EGLint attribute; 296 Adder(EGLAttributeVector& v, EGLint attribute) 297 : v(v), attribute(attribute) { 298 } 299 public: 300 void operator = (EGLint value) { 301 if (attribute != EGL_NONE) { 302 v.mList.add(attribute, value); 303 } 304 } 305 operator EGLint () const { return v.mList[attribute]; } 306 }; 307public: 308 EGLAttributeVector() { 309 mList.add(EGL_NONE, EGL_NONE); 310 } 311 void remove(EGLint attribute) { 312 if (attribute != EGL_NONE) { 313 mList.removeItem(attribute); 314 } 315 } 316 Adder operator [] (EGLint attribute) { 317 return Adder(*this, attribute); 318 } 319 EGLint operator [] (EGLint attribute) const { 320 return mList[attribute]; 321 } 322 // cast-operator to (EGLint const*) 323 operator EGLint const* () const { return &mList.keyAt(0).v; } 324}; 325 326EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) { 327 // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if 328 // it is to be used with WIFI displays 329 EGLConfig config; 330 EGLint dummy; 331 status_t err; 332 333 EGLAttributeVector attribs; 334 attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT; 335 attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE; 336 attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE; 337 attribs[EGL_RED_SIZE] = 8; 338 attribs[EGL_GREEN_SIZE] = 8; 339 attribs[EGL_BLUE_SIZE] = 8; 340 341 err = selectConfigForAttribute(display, attribs, EGL_NONE, EGL_NONE, &config); 342 if (!err) 343 goto success; 344 345 // maybe we failed because of EGL_FRAMEBUFFER_TARGET_ANDROID 346 ALOGW("no suitable EGLConfig found, trying without EGL_FRAMEBUFFER_TARGET_ANDROID"); 347 attribs.remove(EGL_FRAMEBUFFER_TARGET_ANDROID); 348 err = selectConfigForAttribute(display, attribs, 349 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 350 if (!err) 351 goto success; 352 353 // maybe we failed because of EGL_RECORDABLE_ANDROID 354 ALOGW("no suitable EGLConfig found, trying without EGL_RECORDABLE_ANDROID"); 355 attribs.remove(EGL_RECORDABLE_ANDROID); 356 err = selectConfigForAttribute(display, attribs, 357 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 358 if (!err) 359 goto success; 360 361 // allow less than 24-bit color; the non-gpu-accelerated emulator only 362 // supports 16-bit color 363 ALOGW("no suitable EGLConfig found, trying with 16-bit color allowed"); 364 attribs.remove(EGL_RED_SIZE); 365 attribs.remove(EGL_GREEN_SIZE); 366 attribs.remove(EGL_BLUE_SIZE); 367 err = selectConfigForAttribute(display, attribs, 368 EGL_NATIVE_VISUAL_ID, nativeVisualId, &config); 369 if (!err) 370 goto success; 371 372 // this EGL is too lame for Android 373 ALOGE("no suitable EGLConfig found, giving up"); 374 375 return 0; 376 377success: 378 if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy)) 379 ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!"); 380 return config; 381} 382 383EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) { 384 // Also create our EGLContext 385 EGLint contextAttributes[] = { 386#ifdef EGL_IMG_context_priority 387#ifdef HAS_CONTEXT_PRIORITY 388#warning "using EGL_IMG_context_priority" 389 EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG, 390#endif 391#endif 392 EGL_NONE, EGL_NONE 393 }; 394 EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes); 395 ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed"); 396 return ctxt; 397} 398 399void SurfaceFlinger::initializeGL(EGLDisplay display) { 400 GLExtensions& extensions(GLExtensions::getInstance()); 401 extensions.initWithGLStrings( 402 glGetString(GL_VENDOR), 403 glGetString(GL_RENDERER), 404 glGetString(GL_VERSION), 405 glGetString(GL_EXTENSIONS), 406 eglQueryString(display, EGL_VENDOR), 407 eglQueryString(display, EGL_VERSION), 408 eglQueryString(display, EGL_EXTENSIONS)); 409 410 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 411 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 412 413 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 414 glPixelStorei(GL_PACK_ALIGNMENT, 4); 415 glEnableClientState(GL_VERTEX_ARRAY); 416 glShadeModel(GL_FLAT); 417 glDisable(GL_DITHER); 418 glDisable(GL_CULL_FACE); 419 420 struct pack565 { 421 inline uint16_t operator() (int r, int g, int b) const { 422 return (r<<11)|(g<<5)|b; 423 } 424 } pack565; 425 426 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) }; 427 glGenTextures(1, &mProtectedTexName); 428 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 429 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 430 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 431 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 432 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 433 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 434 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 435 436 // print some debugging info 437 EGLint r,g,b,a; 438 eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE, &r); 439 eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g); 440 eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE, &b); 441 eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a); 442 ALOGI("EGL informations:"); 443 ALOGI("vendor : %s", extensions.getEglVendor()); 444 ALOGI("version : %s", extensions.getEglVersion()); 445 ALOGI("extensions: %s", extensions.getEglExtension()); 446 ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported"); 447 ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig); 448 ALOGI("OpenGL ES informations:"); 449 ALOGI("vendor : %s", extensions.getVendor()); 450 ALOGI("renderer : %s", extensions.getRenderer()); 451 ALOGI("version : %s", extensions.getVersion()); 452 ALOGI("extensions: %s", extensions.getExtension()); 453 ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize); 454 ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]); 455} 456 457status_t SurfaceFlinger::readyToRun() 458{ 459 ALOGI( "SurfaceFlinger's main thread ready to run. " 460 "Initializing graphics H/W..."); 461 462 // initialize EGL for the default display 463 mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); 464 eglInitialize(mEGLDisplay, NULL, NULL); 465 466 // Initialize the H/W composer object. There may or may not be an 467 // actual hardware composer underneath. 468 mHwc = new HWComposer(this, 469 *static_cast<HWComposer::EventHandler *>(this)); 470 471 // initialize the config and context 472 EGLint format = mHwc->getVisualID(); 473 mEGLConfig = selectEGLConfig(mEGLDisplay, format); 474 mEGLContext = createGLContext(mEGLDisplay, mEGLConfig); 475 476 LOG_ALWAYS_FATAL_IF(mEGLContext == EGL_NO_CONTEXT, 477 "couldn't create EGLContext"); 478 479 // initialize our non-virtual displays 480 for (size_t i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 481 DisplayDevice::DisplayType type((DisplayDevice::DisplayType)i); 482 mDefaultDisplays[i] = new BBinder(); 483 wp<IBinder> token = mDefaultDisplays[i]; 484 485 // set-up the displays that are already connected 486 if (mHwc->isConnected(i) || type==DisplayDevice::DISPLAY_PRIMARY) { 487 mCurrentState.displays.add(token, DisplayDeviceState(type)); 488 sp<FramebufferSurface> fbs = new FramebufferSurface(*mHwc, i); 489 sp<SurfaceTextureClient> stc = new SurfaceTextureClient( 490 static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue())); 491 sp<DisplayDevice> hw = new DisplayDevice(this, 492 type, token, stc, fbs, mEGLConfig); 493 if (i > DisplayDevice::DISPLAY_PRIMARY) { 494 // FIXME: currently we don't get blank/unblank requests 495 // for displays other than the main display, so we always 496 // assume a connected display is unblanked. 497 ALOGD("marking display %d as acquired/unblanked", i); 498 hw->acquireScreen(); 499 } 500 mDisplays.add(token, hw); 501 } 502 } 503 504 // we need a GL context current in a few places, when initializing 505 // OpenGL ES (see below), or creating a layer, 506 // or when a texture is (asynchronously) destroyed, and for that 507 // we need a valid surface, so it's convenient to use the main display 508 // for that. 509 sp<const DisplayDevice> hw = getDefaultDisplayDevice(); 510 511 // initialize OpenGL ES 512 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 513 initializeGL(mEGLDisplay); 514 515 // start the EventThread 516 mEventThread = new EventThread(this); 517 mEventQueue.setEventThread(mEventThread); 518 519 // initialize our drawing state 520 mDrawingState = mCurrentState; 521 522 523 // We're now ready to accept clients... 524 mReadyToRunBarrier.open(); 525 526 // set initial conditions (e.g. unblank default device) 527 initializeDisplays(); 528 529 // start boot animation 530 startBootAnim(); 531 532 return NO_ERROR; 533} 534 535int32_t SurfaceFlinger::allocateHwcDisplayId(DisplayDevice::DisplayType type) { 536 return (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) ? 537 type : mHwc->allocateDisplayId(); 538} 539 540void SurfaceFlinger::startBootAnim() { 541 // start boot animation 542 property_set("service.bootanim.exit", "0"); 543 property_set("ctl.start", "bootanim"); 544} 545 546uint32_t SurfaceFlinger::getMaxTextureSize() const { 547 return mMaxTextureSize; 548} 549 550uint32_t SurfaceFlinger::getMaxViewportDims() const { 551 return mMaxViewportDims[0] < mMaxViewportDims[1] ? 552 mMaxViewportDims[0] : mMaxViewportDims[1]; 553} 554 555// ---------------------------------------------------------------------------- 556 557bool SurfaceFlinger::authenticateSurfaceTexture( 558 const sp<ISurfaceTexture>& surfaceTexture) const { 559 Mutex::Autolock _l(mStateLock); 560 sp<IBinder> surfaceTextureBinder(surfaceTexture->asBinder()); 561 562 // Check the visible layer list for the ISurface 563 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 564 size_t count = currentLayers.size(); 565 for (size_t i=0 ; i<count ; i++) { 566 const sp<LayerBase>& layer(currentLayers[i]); 567 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 568 if (lbc != NULL) { 569 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 570 if (lbcBinder == surfaceTextureBinder) { 571 return true; 572 } 573 } 574 } 575 576 // Check the layers in the purgatory. This check is here so that if a 577 // SurfaceTexture gets destroyed before all the clients are done using it, 578 // the error will not be reported as "surface XYZ is not authenticated", but 579 // will instead fail later on when the client tries to use the surface, 580 // which should be reported as "surface XYZ returned an -ENODEV". The 581 // purgatorized layers are no less authentic than the visible ones, so this 582 // should not cause any harm. 583 size_t purgatorySize = mLayerPurgatory.size(); 584 for (size_t i=0 ; i<purgatorySize ; i++) { 585 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 586 sp<LayerBaseClient> lbc(layer->getLayerBaseClient()); 587 if (lbc != NULL) { 588 wp<IBinder> lbcBinder = lbc->getSurfaceTextureBinder(); 589 if (lbcBinder == surfaceTextureBinder) { 590 return true; 591 } 592 } 593 } 594 595 return false; 596} 597 598status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) { 599 int32_t type = BAD_VALUE; 600 for (int i=0 ; i<DisplayDevice::NUM_DISPLAY_TYPES ; i++) { 601 if (display == mDefaultDisplays[i]) { 602 type = i; 603 break; 604 } 605 } 606 607 if (type < 0) { 608 return type; 609 } 610 611 const HWComposer& hwc(getHwComposer()); 612 if (!hwc.isConnected(type)) { 613 return NAME_NOT_FOUND; 614 } 615 616 float xdpi = hwc.getDpiX(type); 617 float ydpi = hwc.getDpiY(type); 618 619 // TODO: Not sure if display density should handled by SF any longer 620 class Density { 621 static int getDensityFromProperty(char const* propName) { 622 char property[PROPERTY_VALUE_MAX]; 623 int density = 0; 624 if (property_get(propName, property, NULL) > 0) { 625 density = atoi(property); 626 } 627 return density; 628 } 629 public: 630 static int getEmuDensity() { 631 return getDensityFromProperty("qemu.sf.lcd_density"); } 632 static int getBuildDensity() { 633 return getDensityFromProperty("ro.sf.lcd_density"); } 634 }; 635 636 if (type == DisplayDevice::DISPLAY_PRIMARY) { 637 // The density of the device is provided by a build property 638 float density = Density::getBuildDensity() / 160.0f; 639 if (density == 0) { 640 // the build doesn't provide a density -- this is wrong! 641 // use xdpi instead 642 ALOGE("ro.sf.lcd_density must be defined as a build property"); 643 density = xdpi / 160.0f; 644 } 645 if (Density::getEmuDensity()) { 646 // if "qemu.sf.lcd_density" is specified, it overrides everything 647 xdpi = ydpi = density = Density::getEmuDensity(); 648 density /= 160.0f; 649 } 650 info->density = density; 651 652 // TODO: this needs to go away (currently needed only by webkit) 653 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 654 info->orientation = hw->getOrientation(); 655 getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo); 656 } else { 657 // TODO: where should this value come from? 658 static const int TV_DENSITY = 213; 659 info->density = TV_DENSITY / 160.0f; 660 info->orientation = 0; 661 } 662 663 info->w = hwc.getWidth(type); 664 info->h = hwc.getHeight(type); 665 info->xdpi = xdpi; 666 info->ydpi = ydpi; 667 info->fps = float(1e9 / hwc.getRefreshPeriod(type)); 668 return NO_ERROR; 669} 670 671// ---------------------------------------------------------------------------- 672 673sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() { 674 return mEventThread->createEventConnection(); 675} 676 677void SurfaceFlinger::connectDisplay(const sp<ISurfaceTexture>& surface) { 678 679 sp<IBinder> token; 680 { // scope for the lock 681 Mutex::Autolock _l(mStateLock); 682 token = mExtDisplayToken; 683 } 684 685 if (token == 0) { 686 token = createDisplay(String8("Display from connectDisplay")); 687 } 688 689 { // scope for the lock 690 Mutex::Autolock _l(mStateLock); 691 if (surface == 0) { 692 // release our current display. we're guarantee to have 693 // a reference to it (token), while we hold the lock 694 mExtDisplayToken = 0; 695 } else { 696 mExtDisplayToken = token; 697 } 698 699 DisplayDeviceState& info(mCurrentState.displays.editValueFor(token)); 700 info.surface = surface; 701 setTransactionFlags(eDisplayTransactionNeeded); 702 } 703} 704 705// ---------------------------------------------------------------------------- 706 707void SurfaceFlinger::waitForEvent() { 708 mEventQueue.waitMessage(); 709} 710 711void SurfaceFlinger::signalTransaction() { 712 mEventQueue.invalidate(); 713} 714 715void SurfaceFlinger::signalLayerUpdate() { 716 mEventQueue.invalidate(); 717} 718 719void SurfaceFlinger::signalRefresh() { 720 mEventQueue.refresh(); 721} 722 723status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg, 724 nsecs_t reltime, uint32_t flags) { 725 return mEventQueue.postMessage(msg, reltime); 726} 727 728status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg, 729 nsecs_t reltime, uint32_t flags) { 730 status_t res = mEventQueue.postMessage(msg, reltime); 731 if (res == NO_ERROR) { 732 msg->wait(); 733 } 734 return res; 735} 736 737bool SurfaceFlinger::threadLoop() { 738 waitForEvent(); 739 return true; 740} 741 742void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) { 743 if (mEventThread == NULL) { 744 // This is a temporary workaround for b/7145521. A non-null pointer 745 // does not mean EventThread has finished initializing, so this 746 // is not a correct fix. 747 ALOGW("WARNING: EventThread not started, ignoring vsync"); 748 return; 749 } 750 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 751 // we should only receive DisplayDevice::DisplayType from the vsync callback 752 mEventThread->onVSyncReceived(type, timestamp); 753 } 754} 755 756void SurfaceFlinger::onHotplugReceived(int type, bool connected) { 757 if (mEventThread == NULL) { 758 // This is a temporary workaround for b/7145521. A non-null pointer 759 // does not mean EventThread has finished initializing, so this 760 // is not a correct fix. 761 ALOGW("WARNING: EventThread not started, ignoring hotplug"); 762 return; 763 } 764 765 if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) { 766 Mutex::Autolock _l(mStateLock); 767 if (connected == false) { 768 mCurrentState.displays.removeItem(mDefaultDisplays[type]); 769 } else { 770 DisplayDeviceState info((DisplayDevice::DisplayType)type); 771 mCurrentState.displays.add(mDefaultDisplays[type], info); 772 } 773 setTransactionFlags(eDisplayTransactionNeeded); 774 775 // we should only receive DisplayDevice::DisplayType from the vsync callback 776 mEventThread->onHotplugReceived(type, connected); 777 } 778} 779 780void SurfaceFlinger::eventControl(int disp, int event, int enabled) { 781 getHwComposer().eventControl(disp, event, enabled); 782} 783 784void SurfaceFlinger::onMessageReceived(int32_t what) { 785 ATRACE_CALL(); 786 switch (what) { 787 case MessageQueue::INVALIDATE: 788 handleMessageTransaction(); 789 handleMessageInvalidate(); 790 signalRefresh(); 791 break; 792 case MessageQueue::REFRESH: 793 handleMessageRefresh(); 794 break; 795 } 796} 797 798void SurfaceFlinger::handleMessageTransaction() { 799 uint32_t transactionFlags = peekTransactionFlags(eTransactionMask); 800 if (transactionFlags) { 801 handleTransaction(transactionFlags); 802 } 803} 804 805void SurfaceFlinger::handleMessageInvalidate() { 806 ATRACE_CALL(); 807 handlePageFlip(); 808} 809 810void SurfaceFlinger::handleMessageRefresh() { 811 ATRACE_CALL(); 812 preComposition(); 813 rebuildLayerStacks(); 814 setUpHWComposer(); 815 doDebugFlashRegions(); 816 doComposition(); 817 postComposition(); 818} 819 820void SurfaceFlinger::doDebugFlashRegions() 821{ 822 // is debugging enabled 823 if (CC_LIKELY(!mDebugRegion)) 824 return; 825 826 const bool repaintEverything = mRepaintEverything; 827 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 828 const sp<DisplayDevice>& hw(mDisplays[dpy]); 829 if (hw->canDraw()) { 830 // transform the dirty region into this screen's coordinate space 831 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 832 if (!dirtyRegion.isEmpty()) { 833 // redraw the whole screen 834 doComposeSurfaces(hw, Region(hw->bounds())); 835 836 // and draw the dirty region 837 glDisable(GL_TEXTURE_EXTERNAL_OES); 838 glDisable(GL_TEXTURE_2D); 839 glDisable(GL_BLEND); 840 glColor4f(1, 0, 1, 1); 841 const int32_t height = hw->getHeight(); 842 Region::const_iterator it = dirtyRegion.begin(); 843 Region::const_iterator const end = dirtyRegion.end(); 844 while (it != end) { 845 const Rect& r = *it++; 846 GLfloat vertices[][2] = { 847 { r.left, height - r.top }, 848 { r.left, height - r.bottom }, 849 { r.right, height - r.bottom }, 850 { r.right, height - r.top } 851 }; 852 glVertexPointer(2, GL_FLOAT, 0, vertices); 853 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 854 } 855 hw->compositionComplete(); 856 hw->swapBuffers(getHwComposer()); 857 } 858 } 859 } 860 861 postFramebuffer(); 862 863 if (mDebugRegion > 1) { 864 usleep(mDebugRegion * 1000); 865 } 866 867 HWComposer& hwc(getHwComposer()); 868 if (hwc.initCheck() == NO_ERROR) { 869 status_t err = hwc.prepare(); 870 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 871 } 872} 873 874void SurfaceFlinger::preComposition() 875{ 876 bool needExtraInvalidate = false; 877 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 878 const size_t count = currentLayers.size(); 879 for (size_t i=0 ; i<count ; i++) { 880 if (currentLayers[i]->onPreComposition()) { 881 needExtraInvalidate = true; 882 } 883 } 884 if (needExtraInvalidate) { 885 signalLayerUpdate(); 886 } 887} 888 889void SurfaceFlinger::postComposition() 890{ 891 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 892 const size_t count = currentLayers.size(); 893 for (size_t i=0 ; i<count ; i++) { 894 currentLayers[i]->onPostComposition(); 895 } 896} 897 898void SurfaceFlinger::rebuildLayerStacks() { 899 // rebuild the visible layer list per screen 900 if (CC_UNLIKELY(mVisibleRegionsDirty)) { 901 ATRACE_CALL(); 902 mVisibleRegionsDirty = false; 903 invalidateHwcGeometry(); 904 905 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 906 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 907 Region opaqueRegion; 908 Region dirtyRegion; 909 Vector< sp<LayerBase> > layersSortedByZ; 910 const sp<DisplayDevice>& hw(mDisplays[dpy]); 911 const Transform& tr(hw->getTransform()); 912 const Rect bounds(hw->getBounds()); 913 if (hw->canDraw()) { 914 SurfaceFlinger::computeVisibleRegions(currentLayers, 915 hw->getLayerStack(), dirtyRegion, opaqueRegion); 916 917 const size_t count = currentLayers.size(); 918 for (size_t i=0 ; i<count ; i++) { 919 const sp<LayerBase>& layer(currentLayers[i]); 920 const Layer::State& s(layer->drawingState()); 921 if (s.layerStack == hw->getLayerStack()) { 922 Region drawRegion(tr.transform( 923 layer->visibleNonTransparentRegion)); 924 drawRegion.andSelf(bounds); 925 if (!drawRegion.isEmpty()) { 926 layersSortedByZ.add(layer); 927 } 928 } 929 } 930 } 931 hw->setVisibleLayersSortedByZ(layersSortedByZ); 932 hw->undefinedRegion.set(bounds); 933 hw->undefinedRegion.subtractSelf(tr.transform(opaqueRegion)); 934 hw->dirtyRegion.orSelf(dirtyRegion); 935 } 936 } 937} 938 939void SurfaceFlinger::setUpHWComposer() { 940 HWComposer& hwc(getHwComposer()); 941 if (hwc.initCheck() == NO_ERROR) { 942 // build the h/w work list 943 if (CC_UNLIKELY(mHwWorkListDirty)) { 944 mHwWorkListDirty = false; 945 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 946 sp<const DisplayDevice> hw(mDisplays[dpy]); 947 const int32_t id = hw->getHwcDisplayId(); 948 if (id >= 0) { 949 const Vector< sp<LayerBase> >& currentLayers( 950 hw->getVisibleLayersSortedByZ()); 951 const size_t count = currentLayers.size(); 952 if (hwc.createWorkList(id, count) == NO_ERROR) { 953 HWComposer::LayerListIterator cur = hwc.begin(id); 954 const HWComposer::LayerListIterator end = hwc.end(id); 955 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 956 const sp<LayerBase>& layer(currentLayers[i]); 957 layer->setGeometry(hw, *cur); 958 if (mDebugDisableHWC || mDebugRegion) { 959 cur->setSkip(true); 960 } 961 } 962 } 963 } 964 } 965 } 966 967 // set the per-frame data 968 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 969 sp<const DisplayDevice> hw(mDisplays[dpy]); 970 const int32_t id = hw->getHwcDisplayId(); 971 if (id >= 0) { 972 const Vector< sp<LayerBase> >& currentLayers( 973 hw->getVisibleLayersSortedByZ()); 974 const size_t count = currentLayers.size(); 975 HWComposer::LayerListIterator cur = hwc.begin(id); 976 const HWComposer::LayerListIterator end = hwc.end(id); 977 for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) { 978 /* 979 * update the per-frame h/w composer data for each layer 980 * and build the transparent region of the FB 981 */ 982 const sp<LayerBase>& layer(currentLayers[i]); 983 layer->setPerFrameData(hw, *cur); 984 } 985 } 986 } 987 988 status_t err = hwc.prepare(); 989 ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err)); 990 } 991} 992 993void SurfaceFlinger::doComposition() { 994 ATRACE_CALL(); 995 const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); 996 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 997 const sp<DisplayDevice>& hw(mDisplays[dpy]); 998 if (hw->canDraw()) { 999 // transform the dirty region into this screen's coordinate space 1000 const Region dirtyRegion(hw->getDirtyRegion(repaintEverything)); 1001 if (!dirtyRegion.isEmpty()) { 1002 // repaint the framebuffer (if needed) 1003 doDisplayComposition(hw, dirtyRegion); 1004 } 1005 hw->dirtyRegion.clear(); 1006 hw->flip(hw->swapRegion); 1007 hw->swapRegion.clear(); 1008 } 1009 // inform the h/w that we're done compositing 1010 hw->compositionComplete(); 1011 } 1012 postFramebuffer(); 1013} 1014 1015void SurfaceFlinger::postFramebuffer() 1016{ 1017 ATRACE_CALL(); 1018 1019 const nsecs_t now = systemTime(); 1020 mDebugInSwapBuffers = now; 1021 1022 HWComposer& hwc(getHwComposer()); 1023 if (hwc.initCheck() == NO_ERROR) { 1024 if (!hwc.supportsFramebufferTarget()) { 1025 // EGL spec says: 1026 // "surface must be bound to the calling thread's current context, 1027 // for the current rendering API." 1028 DisplayDevice::makeCurrent(mEGLDisplay, 1029 getDefaultDisplayDevice(), mEGLContext); 1030 } 1031 hwc.commit(); 1032 } 1033 1034 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1035 sp<const DisplayDevice> hw(mDisplays[dpy]); 1036 const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ()); 1037 hw->onSwapBuffersCompleted(hwc); 1038 const size_t count = currentLayers.size(); 1039 int32_t id = hw->getHwcDisplayId(); 1040 if (id >=0 && hwc.initCheck() == NO_ERROR) { 1041 HWComposer::LayerListIterator cur = hwc.begin(id); 1042 const HWComposer::LayerListIterator end = hwc.end(id); 1043 for (size_t i = 0; cur != end && i < count; ++i, ++cur) { 1044 currentLayers[i]->onLayerDisplayed(hw, &*cur); 1045 } 1046 } else { 1047 for (size_t i = 0; i < count; i++) { 1048 currentLayers[i]->onLayerDisplayed(hw, NULL); 1049 } 1050 } 1051 } 1052 1053 mLastSwapBufferTime = systemTime() - now; 1054 mDebugInSwapBuffers = 0; 1055} 1056 1057void SurfaceFlinger::handleTransaction(uint32_t transactionFlags) 1058{ 1059 ATRACE_CALL(); 1060 1061 Mutex::Autolock _l(mStateLock); 1062 const nsecs_t now = systemTime(); 1063 mDebugInTransaction = now; 1064 1065 // Here we're guaranteed that some transaction flags are set 1066 // so we can call handleTransactionLocked() unconditionally. 1067 // We call getTransactionFlags(), which will also clear the flags, 1068 // with mStateLock held to guarantee that mCurrentState won't change 1069 // until the transaction is committed. 1070 1071 transactionFlags = getTransactionFlags(eTransactionMask); 1072 handleTransactionLocked(transactionFlags); 1073 1074 mLastTransactionTime = systemTime() - now; 1075 mDebugInTransaction = 0; 1076 invalidateHwcGeometry(); 1077 // here the transaction has been committed 1078} 1079 1080void SurfaceFlinger::handleTransactionLocked(uint32_t transactionFlags) 1081{ 1082 const LayerVector& currentLayers(mCurrentState.layersSortedByZ); 1083 const size_t count = currentLayers.size(); 1084 1085 /* 1086 * Traversal of the children 1087 * (perform the transaction for each of them if needed) 1088 */ 1089 1090 if (transactionFlags & eTraversalNeeded) { 1091 for (size_t i=0 ; i<count ; i++) { 1092 const sp<LayerBase>& layer = currentLayers[i]; 1093 uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded); 1094 if (!trFlags) continue; 1095 1096 const uint32_t flags = layer->doTransaction(0); 1097 if (flags & Layer::eVisibleRegion) 1098 mVisibleRegionsDirty = true; 1099 } 1100 } 1101 1102 /* 1103 * Perform display own transactions if needed 1104 */ 1105 1106 if (transactionFlags & eDisplayTransactionNeeded) { 1107 // here we take advantage of Vector's copy-on-write semantics to 1108 // improve performance by skipping the transaction entirely when 1109 // know that the lists are identical 1110 const KeyedVector< wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays); 1111 const KeyedVector< wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays); 1112 if (!curr.isIdenticalTo(draw)) { 1113 mVisibleRegionsDirty = true; 1114 const size_t cc = curr.size(); 1115 size_t dc = draw.size(); 1116 1117 // find the displays that were removed 1118 // (ie: in drawing state but not in current state) 1119 // also handle displays that changed 1120 // (ie: displays that are in both lists) 1121 for (size_t i=0 ; i<dc ; i++) { 1122 const ssize_t j = curr.indexOfKey(draw.keyAt(i)); 1123 if (j < 0) { 1124 // in drawing state but not in current state 1125 if (!draw[i].isMainDisplay()) { 1126 // Call makeCurrent() on the primary display so we can 1127 // be sure that nothing associated with this display 1128 // is current. 1129 const sp<const DisplayDevice>& hw(getDefaultDisplayDevice()); 1130 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1131 mDisplays.removeItem(draw.keyAt(i)); 1132 getHwComposer().disconnectDisplay(draw[i].type); 1133 } else { 1134 ALOGW("trying to remove the main display"); 1135 } 1136 } else { 1137 // this display is in both lists. see if something changed. 1138 const DisplayDeviceState& state(curr[j]); 1139 const wp<IBinder>& display(curr.keyAt(j)); 1140 if (state.surface->asBinder() != draw[i].surface->asBinder()) { 1141 // changing the surface is like destroying and 1142 // recreating the DisplayDevice, so we just remove it 1143 // from the drawing state, so that it get re-added 1144 // below. 1145 mDisplays.removeItem(display); 1146 mDrawingState.displays.removeItemsAt(i); 1147 dc--; i--; 1148 // at this point we must loop to the next item 1149 continue; 1150 } 1151 1152 const sp<DisplayDevice>& disp(getDisplayDevice(display)); 1153 if (disp != NULL) { 1154 if (state.layerStack != draw[i].layerStack) { 1155 disp->setLayerStack(state.layerStack); 1156 } 1157 if ((state.orientation != draw[i].orientation) 1158 || (state.viewport != draw[i].viewport) 1159 || (state.frame != draw[i].frame)) 1160 { 1161 disp->setProjection(state.orientation, 1162 state.viewport, state.frame); 1163 } 1164 1165 // Walk through all the layers in currentLayers, 1166 // and update their transform hint. 1167 // 1168 // TODO: we could be much more clever about which 1169 // layers we touch and how often we do these updates 1170 // (e.g. only touch the layers associated with this 1171 // display, and only on a rotation). 1172 for (size_t i = 0; i < count; i++) { 1173 const sp<LayerBase>& layerBase = currentLayers[i]; 1174 layerBase->updateTransformHint(); 1175 } 1176 } 1177 } 1178 } 1179 1180 // find displays that were added 1181 // (ie: in current state but not in drawing state) 1182 for (size_t i=0 ; i<cc ; i++) { 1183 if (draw.indexOfKey(curr.keyAt(i)) < 0) { 1184 const DisplayDeviceState& state(curr[i]); 1185 1186 sp<FramebufferSurface> fbs; 1187 sp<SurfaceTextureClient> stc; 1188 if (!state.isVirtualDisplay()) { 1189 1190 ALOGE_IF(state.surface!=NULL, 1191 "adding a supported display, but rendering " 1192 "surface is provided (%p), ignoring it", 1193 state.surface.get()); 1194 1195 // for supported (by hwc) displays we provide our 1196 // own rendering surface 1197 fbs = new FramebufferSurface(*mHwc, state.type); 1198 stc = new SurfaceTextureClient( 1199 static_cast< sp<ISurfaceTexture> >(fbs->getBufferQueue())); 1200 } else { 1201 if (state.surface != NULL) { 1202 stc = new SurfaceTextureClient(state.surface); 1203 } 1204 } 1205 1206 const wp<IBinder>& display(curr.keyAt(i)); 1207 if (stc != NULL) { 1208 sp<DisplayDevice> hw = new DisplayDevice(this, 1209 state.type, display, stc, fbs, mEGLConfig); 1210 hw->setLayerStack(state.layerStack); 1211 hw->setProjection(state.orientation, 1212 state.viewport, state.frame); 1213 hw->setDisplayName(state.displayName); 1214 mDisplays.add(display, hw); 1215 if (hw->getDisplayType() < DisplayDevice::NUM_DISPLAY_TYPES) { 1216 // notify the system that this display is now up 1217 // (note onScreenAcquired() is safe to call from 1218 // here because we're in the main thread) 1219 onScreenAcquired(hw); 1220 } 1221 } 1222 } 1223 } 1224 } 1225 } 1226 1227 /* 1228 * Perform our own transaction if needed 1229 */ 1230 1231 const LayerVector& previousLayers(mDrawingState.layersSortedByZ); 1232 if (currentLayers.size() > previousLayers.size()) { 1233 // layers have been added 1234 mVisibleRegionsDirty = true; 1235 } 1236 1237 // some layers might have been removed, so 1238 // we need to update the regions they're exposing. 1239 if (mLayersRemoved) { 1240 mLayersRemoved = false; 1241 mVisibleRegionsDirty = true; 1242 const size_t count = previousLayers.size(); 1243 for (size_t i=0 ; i<count ; i++) { 1244 const sp<LayerBase>& layer(previousLayers[i]); 1245 if (currentLayers.indexOf(layer) < 0) { 1246 // this layer is not visible anymore 1247 // TODO: we could traverse the tree from front to back and 1248 // compute the actual visible region 1249 // TODO: we could cache the transformed region 1250 const Layer::State& s(layer->drawingState()); 1251 Region visibleReg = s.transform.transform( 1252 Region(Rect(s.active.w, s.active.h))); 1253 invalidateLayerStack(s.layerStack, visibleReg); 1254 } 1255 } 1256 } 1257 1258 commitTransaction(); 1259} 1260 1261void SurfaceFlinger::commitTransaction() 1262{ 1263 if (!mLayersPendingRemoval.isEmpty()) { 1264 // Notify removed layers now that they can't be drawn from 1265 for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) { 1266 mLayersPendingRemoval[i]->onRemoved(); 1267 } 1268 mLayersPendingRemoval.clear(); 1269 } 1270 1271 mDrawingState = mCurrentState; 1272 mTransationPending = false; 1273 mTransactionCV.broadcast(); 1274} 1275 1276void SurfaceFlinger::computeVisibleRegions( 1277 const LayerVector& currentLayers, uint32_t layerStack, 1278 Region& outDirtyRegion, Region& outOpaqueRegion) 1279{ 1280 ATRACE_CALL(); 1281 1282 Region aboveOpaqueLayers; 1283 Region aboveCoveredLayers; 1284 Region dirty; 1285 1286 outDirtyRegion.clear(); 1287 1288 size_t i = currentLayers.size(); 1289 while (i--) { 1290 const sp<LayerBase>& layer = currentLayers[i]; 1291 1292 // start with the whole surface at its current location 1293 const Layer::State& s(layer->drawingState()); 1294 1295 // only consider the layers on the given later stack 1296 if (s.layerStack != layerStack) 1297 continue; 1298 1299 /* 1300 * opaqueRegion: area of a surface that is fully opaque. 1301 */ 1302 Region opaqueRegion; 1303 1304 /* 1305 * visibleRegion: area of a surface that is visible on screen 1306 * and not fully transparent. This is essentially the layer's 1307 * footprint minus the opaque regions above it. 1308 * Areas covered by a translucent surface are considered visible. 1309 */ 1310 Region visibleRegion; 1311 1312 /* 1313 * coveredRegion: area of a surface that is covered by all 1314 * visible regions above it (which includes the translucent areas). 1315 */ 1316 Region coveredRegion; 1317 1318 /* 1319 * transparentRegion: area of a surface that is hinted to be completely 1320 * transparent. This is only used to tell when the layer has no visible 1321 * non-transparent regions and can be removed from the layer list. It 1322 * does not affect the visibleRegion of this layer or any layers 1323 * beneath it. The hint may not be correct if apps don't respect the 1324 * SurfaceView restrictions (which, sadly, some don't). 1325 */ 1326 Region transparentRegion; 1327 1328 1329 // handle hidden surfaces by setting the visible region to empty 1330 if (CC_LIKELY(layer->isVisible())) { 1331 const bool translucent = !layer->isOpaque(); 1332 Rect bounds(layer->computeBounds()); 1333 visibleRegion.set(bounds); 1334 if (!visibleRegion.isEmpty()) { 1335 // Remove the transparent area from the visible region 1336 if (translucent) { 1337 const Transform tr(s.transform); 1338 if (tr.transformed()) { 1339 if (tr.preserveRects()) { 1340 // transform the transparent region 1341 transparentRegion = tr.transform(s.transparentRegion); 1342 } else { 1343 // transformation too complex, can't do the 1344 // transparent region optimization. 1345 transparentRegion.clear(); 1346 } 1347 } else { 1348 transparentRegion = s.transparentRegion; 1349 } 1350 } 1351 1352 // compute the opaque region 1353 const int32_t layerOrientation = s.transform.getOrientation(); 1354 if (s.alpha==255 && !translucent && 1355 ((layerOrientation & Transform::ROT_INVALID) == false)) { 1356 // the opaque region is the layer's footprint 1357 opaqueRegion = visibleRegion; 1358 } 1359 } 1360 } 1361 1362 // Clip the covered region to the visible region 1363 coveredRegion = aboveCoveredLayers.intersect(visibleRegion); 1364 1365 // Update aboveCoveredLayers for next (lower) layer 1366 aboveCoveredLayers.orSelf(visibleRegion); 1367 1368 // subtract the opaque region covered by the layers above us 1369 visibleRegion.subtractSelf(aboveOpaqueLayers); 1370 1371 // compute this layer's dirty region 1372 if (layer->contentDirty) { 1373 // we need to invalidate the whole region 1374 dirty = visibleRegion; 1375 // as well, as the old visible region 1376 dirty.orSelf(layer->visibleRegion); 1377 layer->contentDirty = false; 1378 } else { 1379 /* compute the exposed region: 1380 * the exposed region consists of two components: 1381 * 1) what's VISIBLE now and was COVERED before 1382 * 2) what's EXPOSED now less what was EXPOSED before 1383 * 1384 * note that (1) is conservative, we start with the whole 1385 * visible region but only keep what used to be covered by 1386 * something -- which mean it may have been exposed. 1387 * 1388 * (2) handles areas that were not covered by anything but got 1389 * exposed because of a resize. 1390 */ 1391 const Region newExposed = visibleRegion - coveredRegion; 1392 const Region oldVisibleRegion = layer->visibleRegion; 1393 const Region oldCoveredRegion = layer->coveredRegion; 1394 const Region oldExposed = oldVisibleRegion - oldCoveredRegion; 1395 dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed); 1396 } 1397 dirty.subtractSelf(aboveOpaqueLayers); 1398 1399 // accumulate to the screen dirty region 1400 outDirtyRegion.orSelf(dirty); 1401 1402 // Update aboveOpaqueLayers for next (lower) layer 1403 aboveOpaqueLayers.orSelf(opaqueRegion); 1404 1405 // Store the visible region in screen space 1406 layer->setVisibleRegion(visibleRegion); 1407 layer->setCoveredRegion(coveredRegion); 1408 layer->setVisibleNonTransparentRegion( 1409 visibleRegion.subtract(transparentRegion)); 1410 } 1411 1412 outOpaqueRegion = aboveOpaqueLayers; 1413} 1414 1415void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack, 1416 const Region& dirty) { 1417 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 1418 const sp<DisplayDevice>& hw(mDisplays[dpy]); 1419 if (hw->getLayerStack() == layerStack) { 1420 hw->dirtyRegion.orSelf(dirty); 1421 } 1422 } 1423} 1424 1425void SurfaceFlinger::handlePageFlip() 1426{ 1427 Region dirtyRegion; 1428 1429 bool visibleRegions = false; 1430 const LayerVector& currentLayers(mDrawingState.layersSortedByZ); 1431 const size_t count = currentLayers.size(); 1432 for (size_t i=0 ; i<count ; i++) { 1433 const sp<LayerBase>& layer(currentLayers[i]); 1434 const Region dirty(layer->latchBuffer(visibleRegions)); 1435 const Layer::State& s(layer->drawingState()); 1436 invalidateLayerStack(s.layerStack, dirty); 1437 } 1438 1439 mVisibleRegionsDirty |= visibleRegions; 1440} 1441 1442void SurfaceFlinger::invalidateHwcGeometry() 1443{ 1444 mHwWorkListDirty = true; 1445} 1446 1447 1448void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw, 1449 const Region& inDirtyRegion) 1450{ 1451 Region dirtyRegion(inDirtyRegion); 1452 1453 // compute the invalid region 1454 hw->swapRegion.orSelf(dirtyRegion); 1455 1456 uint32_t flags = hw->getFlags(); 1457 if (flags & DisplayDevice::SWAP_RECTANGLE) { 1458 // we can redraw only what's dirty, but since SWAP_RECTANGLE only 1459 // takes a rectangle, we must make sure to update that whole 1460 // rectangle in that case 1461 dirtyRegion.set(hw->swapRegion.bounds()); 1462 } else { 1463 if (flags & DisplayDevice::PARTIAL_UPDATES) { 1464 // We need to redraw the rectangle that will be updated 1465 // (pushed to the framebuffer). 1466 // This is needed because PARTIAL_UPDATES only takes one 1467 // rectangle instead of a region (see DisplayDevice::flip()) 1468 dirtyRegion.set(hw->swapRegion.bounds()); 1469 } else { 1470 // we need to redraw everything (the whole screen) 1471 dirtyRegion.set(hw->bounds()); 1472 hw->swapRegion = dirtyRegion; 1473 } 1474 } 1475 1476 doComposeSurfaces(hw, dirtyRegion); 1477 1478 // update the swap region and clear the dirty region 1479 hw->swapRegion.orSelf(dirtyRegion); 1480 1481 // swap buffers (presentation) 1482 hw->swapBuffers(getHwComposer()); 1483} 1484 1485void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty) 1486{ 1487 const int32_t id = hw->getHwcDisplayId(); 1488 HWComposer& hwc(getHwComposer()); 1489 HWComposer::LayerListIterator cur = hwc.begin(id); 1490 const HWComposer::LayerListIterator end = hwc.end(id); 1491 1492 const bool hasGlesComposition = hwc.hasGlesComposition(id) || (cur==end); 1493 if (hasGlesComposition) { 1494 DisplayDevice::makeCurrent(mEGLDisplay, hw, mEGLContext); 1495 1496 // set the frame buffer 1497 glMatrixMode(GL_MODELVIEW); 1498 glLoadIdentity(); 1499 1500 // Never touch the framebuffer if we don't have any framebuffer layers 1501 const bool hasHwcComposition = hwc.hasHwcComposition(id); 1502 if (hasHwcComposition) { 1503 // when using overlays, we assume a fully transparent framebuffer 1504 // NOTE: we could reduce how much we need to clear, for instance 1505 // remove where there are opaque FB layers. however, on some 1506 // GPUs doing a "clean slate" glClear might be more efficient. 1507 // We'll revisit later if needed. 1508 glClearColor(0, 0, 0, 0); 1509 glClear(GL_COLOR_BUFFER_BIT); 1510 } else { 1511 const Region region(hw->undefinedRegion.intersect(dirty)); 1512 // screen is already cleared here 1513 if (!region.isEmpty()) { 1514 // can happen with SurfaceView 1515 drawWormhole(hw, region); 1516 } 1517 } 1518 } 1519 1520 /* 1521 * and then, render the layers targeted at the framebuffer 1522 */ 1523 1524 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 1525 const size_t count = layers.size(); 1526 const Transform& tr = hw->getTransform(); 1527 if (cur != end) { 1528 // we're using h/w composer 1529 for (size_t i=0 ; i<count && cur!=end ; ++i, ++cur) { 1530 const sp<LayerBase>& layer(layers[i]); 1531 const Region clip(dirty.intersect(tr.transform(layer->visibleRegion))); 1532 if (!clip.isEmpty()) { 1533 switch (cur->getCompositionType()) { 1534 case HWC_OVERLAY: { 1535 if ((cur->getHints() & HWC_HINT_CLEAR_FB) 1536 && i 1537 && layer->isOpaque() 1538 && hasGlesComposition) { 1539 // never clear the very first layer since we're 1540 // guaranteed the FB is already cleared 1541 layer->clearWithOpenGL(hw, clip); 1542 } 1543 break; 1544 } 1545 case HWC_FRAMEBUFFER: { 1546 layer->draw(hw, clip); 1547 break; 1548 } 1549 case HWC_FRAMEBUFFER_TARGET: { 1550 // this should not happen as the iterator shouldn't 1551 // let us get there. 1552 ALOGW("HWC_FRAMEBUFFER_TARGET found in hwc list (index=%d)", i); 1553 break; 1554 } 1555 } 1556 } 1557 layer->setAcquireFence(hw, *cur); 1558 } 1559 } else { 1560 // we're not using h/w composer 1561 for (size_t i=0 ; i<count ; ++i) { 1562 const sp<LayerBase>& layer(layers[i]); 1563 const Region clip(dirty.intersect( 1564 tr.transform(layer->visibleRegion))); 1565 if (!clip.isEmpty()) { 1566 layer->draw(hw, clip); 1567 } 1568 } 1569 } 1570} 1571 1572void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& hw, 1573 const Region& region) const 1574{ 1575 glDisable(GL_TEXTURE_EXTERNAL_OES); 1576 glDisable(GL_TEXTURE_2D); 1577 glDisable(GL_BLEND); 1578 glColor4f(0,0,0,0); 1579 1580 const int32_t height = hw->getHeight(); 1581 Region::const_iterator it = region.begin(); 1582 Region::const_iterator const end = region.end(); 1583 while (it != end) { 1584 const Rect& r = *it++; 1585 GLfloat vertices[][2] = { 1586 { r.left, height - r.top }, 1587 { r.left, height - r.bottom }, 1588 { r.right, height - r.bottom }, 1589 { r.right, height - r.top } 1590 }; 1591 glVertexPointer(2, GL_FLOAT, 0, vertices); 1592 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 1593 } 1594} 1595 1596ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client, 1597 const sp<LayerBaseClient>& lbc) 1598{ 1599 // attach this layer to the client 1600 size_t name = client->attachLayer(lbc); 1601 1602 // add this layer to the current state list 1603 Mutex::Autolock _l(mStateLock); 1604 mCurrentState.layersSortedByZ.add(lbc); 1605 1606 return ssize_t(name); 1607} 1608 1609status_t SurfaceFlinger::removeLayer(const sp<LayerBase>& layer) 1610{ 1611 Mutex::Autolock _l(mStateLock); 1612 status_t err = purgatorizeLayer_l(layer); 1613 if (err == NO_ERROR) 1614 setTransactionFlags(eTransactionNeeded); 1615 return err; 1616} 1617 1618status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase) 1619{ 1620 ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase); 1621 if (index >= 0) { 1622 mLayersRemoved = true; 1623 return NO_ERROR; 1624 } 1625 return status_t(index); 1626} 1627 1628status_t SurfaceFlinger::purgatorizeLayer_l(const sp<LayerBase>& layerBase) 1629{ 1630 // First add the layer to the purgatory list, which makes sure it won't 1631 // go away, then remove it from the main list (through a transaction). 1632 ssize_t err = removeLayer_l(layerBase); 1633 if (err >= 0) { 1634 mLayerPurgatory.add(layerBase); 1635 } 1636 1637 mLayersPendingRemoval.push(layerBase); 1638 1639 // it's possible that we don't find a layer, because it might 1640 // have been destroyed already -- this is not technically an error 1641 // from the user because there is a race between Client::destroySurface(), 1642 // ~Client() and ~ISurface(). 1643 return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err; 1644} 1645 1646uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags) 1647{ 1648 return android_atomic_release_load(&mTransactionFlags); 1649} 1650 1651uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) 1652{ 1653 return android_atomic_and(~flags, &mTransactionFlags) & flags; 1654} 1655 1656uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) 1657{ 1658 uint32_t old = android_atomic_or(flags, &mTransactionFlags); 1659 if ((old & flags)==0) { // wake the server up 1660 signalTransaction(); 1661 } 1662 return old; 1663} 1664 1665void SurfaceFlinger::setTransactionState( 1666 const Vector<ComposerState>& state, 1667 const Vector<DisplayState>& displays, 1668 uint32_t flags) 1669{ 1670 Mutex::Autolock _l(mStateLock); 1671 uint32_t transactionFlags = 0; 1672 1673 size_t count = displays.size(); 1674 for (size_t i=0 ; i<count ; i++) { 1675 const DisplayState& s(displays[i]); 1676 transactionFlags |= setDisplayStateLocked(s); 1677 } 1678 1679 count = state.size(); 1680 for (size_t i=0 ; i<count ; i++) { 1681 const ComposerState& s(state[i]); 1682 sp<Client> client( static_cast<Client *>(s.client.get()) ); 1683 transactionFlags |= setClientStateLocked(client, s.state); 1684 } 1685 1686 if (transactionFlags) { 1687 // this triggers the transaction 1688 setTransactionFlags(transactionFlags); 1689 1690 // if this is a synchronous transaction, wait for it to take effect 1691 // before returning. 1692 if (flags & eSynchronous) { 1693 mTransationPending = true; 1694 } 1695 while (mTransationPending) { 1696 status_t err = mTransactionCV.waitRelative(mStateLock, s2ns(5)); 1697 if (CC_UNLIKELY(err != NO_ERROR)) { 1698 // just in case something goes wrong in SF, return to the 1699 // called after a few seconds. 1700 ALOGW_IF(err == TIMED_OUT, "closeGlobalTransaction timed out!"); 1701 mTransationPending = false; 1702 break; 1703 } 1704 } 1705 } 1706} 1707 1708uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) 1709{ 1710 uint32_t flags = 0; 1711 DisplayDeviceState& disp(mCurrentState.displays.editValueFor(s.token)); 1712 if (disp.isValid()) { 1713 const uint32_t what = s.what; 1714 if (what & DisplayState::eSurfaceChanged) { 1715 if (disp.surface->asBinder() != s.surface->asBinder()) { 1716 disp.surface = s.surface; 1717 flags |= eDisplayTransactionNeeded; 1718 } 1719 } 1720 if (what & DisplayState::eLayerStackChanged) { 1721 if (disp.layerStack != s.layerStack) { 1722 disp.layerStack = s.layerStack; 1723 flags |= eDisplayTransactionNeeded; 1724 } 1725 } 1726 if (what & DisplayState::eDisplayProjectionChanged) { 1727 if (disp.orientation != s.orientation) { 1728 disp.orientation = s.orientation; 1729 flags |= eDisplayTransactionNeeded; 1730 } 1731 if (disp.frame != s.frame) { 1732 disp.frame = s.frame; 1733 flags |= eDisplayTransactionNeeded; 1734 } 1735 if (disp.viewport != s.viewport) { 1736 disp.viewport = s.viewport; 1737 flags |= eDisplayTransactionNeeded; 1738 } 1739 } 1740 } 1741 return flags; 1742} 1743 1744uint32_t SurfaceFlinger::setClientStateLocked( 1745 const sp<Client>& client, 1746 const layer_state_t& s) 1747{ 1748 uint32_t flags = 0; 1749 sp<LayerBaseClient> layer(client->getLayerUser(s.surface)); 1750 if (layer != 0) { 1751 const uint32_t what = s.what; 1752 if (what & layer_state_t::ePositionChanged) { 1753 if (layer->setPosition(s.x, s.y)) 1754 flags |= eTraversalNeeded; 1755 } 1756 if (what & layer_state_t::eLayerChanged) { 1757 // NOTE: index needs to be calculated before we update the state 1758 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1759 if (layer->setLayer(s.z)) { 1760 mCurrentState.layersSortedByZ.removeAt(idx); 1761 mCurrentState.layersSortedByZ.add(layer); 1762 // we need traversal (state changed) 1763 // AND transaction (list changed) 1764 flags |= eTransactionNeeded|eTraversalNeeded; 1765 } 1766 } 1767 if (what & layer_state_t::eSizeChanged) { 1768 if (layer->setSize(s.w, s.h)) { 1769 flags |= eTraversalNeeded; 1770 } 1771 } 1772 if (what & layer_state_t::eAlphaChanged) { 1773 if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f))) 1774 flags |= eTraversalNeeded; 1775 } 1776 if (what & layer_state_t::eMatrixChanged) { 1777 if (layer->setMatrix(s.matrix)) 1778 flags |= eTraversalNeeded; 1779 } 1780 if (what & layer_state_t::eTransparentRegionChanged) { 1781 if (layer->setTransparentRegionHint(s.transparentRegion)) 1782 flags |= eTraversalNeeded; 1783 } 1784 if (what & layer_state_t::eVisibilityChanged) { 1785 if (layer->setFlags(s.flags, s.mask)) 1786 flags |= eTraversalNeeded; 1787 } 1788 if (what & layer_state_t::eCropChanged) { 1789 if (layer->setCrop(s.crop)) 1790 flags |= eTraversalNeeded; 1791 } 1792 if (what & layer_state_t::eLayerStackChanged) { 1793 // NOTE: index needs to be calculated before we update the state 1794 ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer); 1795 if (layer->setLayerStack(s.layerStack)) { 1796 mCurrentState.layersSortedByZ.removeAt(idx); 1797 mCurrentState.layersSortedByZ.add(layer); 1798 // we need traversal (state changed) 1799 // AND transaction (list changed) 1800 flags |= eTransactionNeeded|eTraversalNeeded; 1801 } 1802 } 1803 } 1804 return flags; 1805} 1806 1807sp<ISurface> SurfaceFlinger::createLayer( 1808 ISurfaceComposerClient::surface_data_t* params, 1809 const String8& name, 1810 const sp<Client>& client, 1811 uint32_t w, uint32_t h, PixelFormat format, 1812 uint32_t flags) 1813{ 1814 sp<LayerBaseClient> layer; 1815 sp<ISurface> surfaceHandle; 1816 1817 if (int32_t(w|h) < 0) { 1818 ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)", 1819 int(w), int(h)); 1820 return surfaceHandle; 1821 } 1822 1823 //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string()); 1824 switch (flags & ISurfaceComposerClient::eFXSurfaceMask) { 1825 case ISurfaceComposerClient::eFXSurfaceNormal: 1826 layer = createNormalLayer(client, w, h, flags, format); 1827 break; 1828 case ISurfaceComposerClient::eFXSurfaceBlur: 1829 case ISurfaceComposerClient::eFXSurfaceDim: 1830 layer = createDimLayer(client, w, h, flags); 1831 break; 1832 case ISurfaceComposerClient::eFXSurfaceScreenshot: 1833 layer = createScreenshotLayer(client, w, h, flags); 1834 break; 1835 } 1836 1837 if (layer != 0) { 1838 layer->initStates(w, h, flags); 1839 layer->setName(name); 1840 ssize_t token = addClientLayer(client, layer); 1841 surfaceHandle = layer->getSurface(); 1842 if (surfaceHandle != 0) { 1843 params->token = token; 1844 params->identity = layer->getIdentity(); 1845 } 1846 setTransactionFlags(eTransactionNeeded); 1847 } 1848 1849 return surfaceHandle; 1850} 1851 1852sp<Layer> SurfaceFlinger::createNormalLayer( 1853 const sp<Client>& client, 1854 uint32_t w, uint32_t h, uint32_t flags, 1855 PixelFormat& format) 1856{ 1857 // initialize the surfaces 1858 switch (format) { 1859 case PIXEL_FORMAT_TRANSPARENT: 1860 case PIXEL_FORMAT_TRANSLUCENT: 1861 format = PIXEL_FORMAT_RGBA_8888; 1862 break; 1863 case PIXEL_FORMAT_OPAQUE: 1864#ifdef NO_RGBX_8888 1865 format = PIXEL_FORMAT_RGB_565; 1866#else 1867 format = PIXEL_FORMAT_RGBX_8888; 1868#endif 1869 break; 1870 } 1871 1872#ifdef NO_RGBX_8888 1873 if (format == PIXEL_FORMAT_RGBX_8888) 1874 format = PIXEL_FORMAT_RGBA_8888; 1875#endif 1876 1877 sp<Layer> layer = new Layer(this, client); 1878 status_t err = layer->setBuffers(w, h, format, flags); 1879 if (CC_LIKELY(err != NO_ERROR)) { 1880 ALOGE("createNormalLayer() failed (%s)", strerror(-err)); 1881 layer.clear(); 1882 } 1883 return layer; 1884} 1885 1886sp<LayerDim> SurfaceFlinger::createDimLayer( 1887 const sp<Client>& client, 1888 uint32_t w, uint32_t h, uint32_t flags) 1889{ 1890 sp<LayerDim> layer = new LayerDim(this, client); 1891 return layer; 1892} 1893 1894sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer( 1895 const sp<Client>& client, 1896 uint32_t w, uint32_t h, uint32_t flags) 1897{ 1898 sp<LayerScreenshot> layer = new LayerScreenshot(this, client); 1899 return layer; 1900} 1901 1902status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid) 1903{ 1904 /* 1905 * called by the window manager, when a surface should be marked for 1906 * destruction. 1907 * 1908 * The surface is removed from the current and drawing lists, but placed 1909 * in the purgatory queue, so it's not destroyed right-away (we need 1910 * to wait for all client's references to go away first). 1911 */ 1912 1913 status_t err = NAME_NOT_FOUND; 1914 Mutex::Autolock _l(mStateLock); 1915 sp<LayerBaseClient> layer = client->getLayerUser(sid); 1916 1917 if (layer != 0) { 1918 err = purgatorizeLayer_l(layer); 1919 if (err == NO_ERROR) { 1920 setTransactionFlags(eTransactionNeeded); 1921 } 1922 } 1923 return err; 1924} 1925 1926status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer) 1927{ 1928 // called by ~ISurface() when all references are gone 1929 status_t err = NO_ERROR; 1930 sp<LayerBaseClient> l(layer.promote()); 1931 if (l != NULL) { 1932 Mutex::Autolock _l(mStateLock); 1933 err = removeLayer_l(l); 1934 if (err == NAME_NOT_FOUND) { 1935 // The surface wasn't in the current list, which means it was 1936 // removed already, which means it is in the purgatory, 1937 // and need to be removed from there. 1938 ssize_t idx = mLayerPurgatory.remove(l); 1939 ALOGE_IF(idx < 0, 1940 "layer=%p is not in the purgatory list", l.get()); 1941 } 1942 ALOGE_IF(err<0 && err != NAME_NOT_FOUND, 1943 "error removing layer=%p (%s)", l.get(), strerror(-err)); 1944 } 1945 return err; 1946} 1947 1948// --------------------------------------------------------------------------- 1949 1950void SurfaceFlinger::onInitializeDisplays() { 1951 // reset screen orientation 1952 Vector<ComposerState> state; 1953 Vector<DisplayState> displays; 1954 DisplayState d; 1955 d.what = DisplayState::eDisplayProjectionChanged; 1956 d.token = mDefaultDisplays[DisplayDevice::DISPLAY_PRIMARY]; 1957 d.orientation = DisplayState::eOrientationDefault; 1958 d.frame.makeInvalid(); 1959 d.viewport.makeInvalid(); 1960 displays.add(d); 1961 setTransactionState(state, displays, 0); 1962 onScreenAcquired(getDefaultDisplayDevice()); 1963} 1964 1965void SurfaceFlinger::initializeDisplays() { 1966 class MessageScreenInitialized : public MessageBase { 1967 SurfaceFlinger* flinger; 1968 public: 1969 MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { } 1970 virtual bool handler() { 1971 flinger->onInitializeDisplays(); 1972 return true; 1973 } 1974 }; 1975 sp<MessageBase> msg = new MessageScreenInitialized(this); 1976 postMessageAsync(msg); // we may be called from main thread, use async message 1977} 1978 1979 1980void SurfaceFlinger::onScreenAcquired(const sp<const DisplayDevice>& hw) { 1981 ALOGD("Screen acquired, type=%d flinger=%p", hw->getDisplayType(), this); 1982 if (hw->isScreenAcquired()) { 1983 // this is expected, e.g. when power manager wakes up during boot 1984 ALOGD(" screen was previously acquired"); 1985 return; 1986 } 1987 1988 hw->acquireScreen(); 1989 int32_t type = hw->getDisplayType(); 1990 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 1991 // built-in display, tell the HWC 1992 getHwComposer().acquire(type); 1993 1994 if (type == DisplayDevice::DISPLAY_PRIMARY) { 1995 // FIXME: eventthread only knows about the main display right now 1996 mEventThread->onScreenAcquired(); 1997 } 1998 } 1999 mVisibleRegionsDirty = true; 2000 repaintEverything(); 2001} 2002 2003void SurfaceFlinger::onScreenReleased(const sp<const DisplayDevice>& hw) { 2004 ALOGD("Screen released, type=%d flinger=%p", hw->getDisplayType(), this); 2005 if (!hw->isScreenAcquired()) { 2006 ALOGD(" screen was previously released"); 2007 return; 2008 } 2009 2010 hw->releaseScreen(); 2011 int32_t type = hw->getDisplayType(); 2012 if (type < DisplayDevice::NUM_DISPLAY_TYPES) { 2013 if (type == DisplayDevice::DISPLAY_PRIMARY) { 2014 // FIXME: eventthread only knows about the main display right now 2015 mEventThread->onScreenReleased(); 2016 } 2017 2018 // built-in display, tell the HWC 2019 getHwComposer().release(type); 2020 } 2021 mVisibleRegionsDirty = true; 2022 // from this point on, SF will stop drawing on this display 2023} 2024 2025void SurfaceFlinger::unblank(const sp<IBinder>& display) { 2026 class MessageScreenAcquired : public MessageBase { 2027 SurfaceFlinger* mFlinger; 2028 const sp<DisplayDevice>& mHw; 2029 public: 2030 MessageScreenAcquired(SurfaceFlinger* flinger, 2031 const sp<DisplayDevice>& hw) : mFlinger(flinger), mHw(hw) { } 2032 virtual bool handler() { 2033 mFlinger->onScreenAcquired(mHw); 2034 return true; 2035 } 2036 }; 2037 const sp<DisplayDevice>& hw = getDisplayDevice(display); 2038 if (hw == NULL) { 2039 ALOGE("Attempt to unblank null display %p", display.get()); 2040 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2041 ALOGW("Attempt to unblank virtual display"); 2042 } else { 2043 sp<MessageBase> msg = new MessageScreenAcquired(this, hw); 2044 postMessageSync(msg); 2045 } 2046} 2047 2048void SurfaceFlinger::blank(const sp<IBinder>& display) { 2049 class MessageScreenReleased : public MessageBase { 2050 SurfaceFlinger* mFlinger; 2051 const sp<DisplayDevice>& mHw; 2052 public: 2053 MessageScreenReleased(SurfaceFlinger* flinger, 2054 const sp<DisplayDevice>& hw) : mFlinger(flinger), mHw(hw) { } 2055 virtual bool handler() { 2056 mFlinger->onScreenReleased(mHw); 2057 return true; 2058 } 2059 }; 2060 const sp<DisplayDevice>& hw = getDisplayDevice(display); 2061 if (hw == NULL) { 2062 ALOGE("Attempt to blank null display %p", display.get()); 2063 } else if (hw->getDisplayType() >= DisplayDevice::NUM_DISPLAY_TYPES) { 2064 ALOGW("Attempt to blank virtual display"); 2065 } else { 2066 sp<MessageBase> msg = new MessageScreenReleased(this, hw); 2067 postMessageSync(msg); 2068 } 2069} 2070 2071// --------------------------------------------------------------------------- 2072 2073status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args) 2074{ 2075 const size_t SIZE = 4096; 2076 char buffer[SIZE]; 2077 String8 result; 2078 2079 if (!PermissionCache::checkCallingPermission(sDump)) { 2080 snprintf(buffer, SIZE, "Permission Denial: " 2081 "can't dump SurfaceFlinger from pid=%d, uid=%d\n", 2082 IPCThreadState::self()->getCallingPid(), 2083 IPCThreadState::self()->getCallingUid()); 2084 result.append(buffer); 2085 } else { 2086 // Try to get the main lock, but don't insist if we can't 2087 // (this would indicate SF is stuck, but we want to be able to 2088 // print something in dumpsys). 2089 int retry = 3; 2090 while (mStateLock.tryLock()<0 && --retry>=0) { 2091 usleep(1000000); 2092 } 2093 const bool locked(retry >= 0); 2094 if (!locked) { 2095 snprintf(buffer, SIZE, 2096 "SurfaceFlinger appears to be unresponsive, " 2097 "dumping anyways (no locks held)\n"); 2098 result.append(buffer); 2099 } 2100 2101 bool dumpAll = true; 2102 size_t index = 0; 2103 size_t numArgs = args.size(); 2104 if (numArgs) { 2105 if ((index < numArgs) && 2106 (args[index] == String16("--list"))) { 2107 index++; 2108 listLayersLocked(args, index, result, buffer, SIZE); 2109 dumpAll = false; 2110 } 2111 2112 if ((index < numArgs) && 2113 (args[index] == String16("--latency"))) { 2114 index++; 2115 dumpStatsLocked(args, index, result, buffer, SIZE); 2116 dumpAll = false; 2117 } 2118 2119 if ((index < numArgs) && 2120 (args[index] == String16("--latency-clear"))) { 2121 index++; 2122 clearStatsLocked(args, index, result, buffer, SIZE); 2123 dumpAll = false; 2124 } 2125 } 2126 2127 if (dumpAll) { 2128 dumpAllLocked(result, buffer, SIZE); 2129 } 2130 2131 if (locked) { 2132 mStateLock.unlock(); 2133 } 2134 } 2135 write(fd, result.string(), result.size()); 2136 return NO_ERROR; 2137} 2138 2139void SurfaceFlinger::listLayersLocked(const Vector<String16>& args, size_t& index, 2140 String8& result, char* buffer, size_t SIZE) const 2141{ 2142 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2143 const size_t count = currentLayers.size(); 2144 for (size_t i=0 ; i<count ; i++) { 2145 const sp<LayerBase>& layer(currentLayers[i]); 2146 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2147 result.append(buffer); 2148 } 2149} 2150 2151void SurfaceFlinger::dumpStatsLocked(const Vector<String16>& args, size_t& index, 2152 String8& result, char* buffer, size_t SIZE) const 2153{ 2154 String8 name; 2155 if (index < args.size()) { 2156 name = String8(args[index]); 2157 index++; 2158 } 2159 2160 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2161 const size_t count = currentLayers.size(); 2162 for (size_t i=0 ; i<count ; i++) { 2163 const sp<LayerBase>& layer(currentLayers[i]); 2164 if (name.isEmpty()) { 2165 snprintf(buffer, SIZE, "%s\n", layer->getName().string()); 2166 result.append(buffer); 2167 } 2168 if (name.isEmpty() || (name == layer->getName())) { 2169 layer->dumpStats(result, buffer, SIZE); 2170 } 2171 } 2172} 2173 2174void SurfaceFlinger::clearStatsLocked(const Vector<String16>& args, size_t& index, 2175 String8& result, char* buffer, size_t SIZE) const 2176{ 2177 String8 name; 2178 if (index < args.size()) { 2179 name = String8(args[index]); 2180 index++; 2181 } 2182 2183 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2184 const size_t count = currentLayers.size(); 2185 for (size_t i=0 ; i<count ; i++) { 2186 const sp<LayerBase>& layer(currentLayers[i]); 2187 if (name.isEmpty() || (name == layer->getName())) { 2188 layer->clearStats(); 2189 } 2190 } 2191} 2192 2193/*static*/ void SurfaceFlinger::appendSfConfigString(String8& result) 2194{ 2195 static const char* config = 2196 " [sf" 2197#ifdef NO_RGBX_8888 2198 " NO_RGBX_8888" 2199#endif 2200#ifdef HAS_CONTEXT_PRIORITY 2201 " HAS_CONTEXT_PRIORITY" 2202#endif 2203#ifdef NEVER_DEFAULT_TO_ASYNC_MODE 2204 " NEVER_DEFAULT_TO_ASYNC_MODE" 2205#endif 2206#ifdef TARGET_DISABLE_TRIPLE_BUFFERING 2207 " TARGET_DISABLE_TRIPLE_BUFFERING" 2208#endif 2209 "]"; 2210 result.append(config); 2211} 2212 2213void SurfaceFlinger::dumpAllLocked( 2214 String8& result, char* buffer, size_t SIZE) const 2215{ 2216 // figure out if we're stuck somewhere 2217 const nsecs_t now = systemTime(); 2218 const nsecs_t inSwapBuffers(mDebugInSwapBuffers); 2219 const nsecs_t inTransaction(mDebugInTransaction); 2220 nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0; 2221 nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0; 2222 2223 /* 2224 * Dump library configuration. 2225 */ 2226 result.append("Build configuration:"); 2227 appendSfConfigString(result); 2228 appendUiConfigString(result); 2229 appendGuiConfigString(result); 2230 result.append("\n"); 2231 2232 /* 2233 * Dump the visible layer list 2234 */ 2235 const LayerVector& currentLayers = mCurrentState.layersSortedByZ; 2236 const size_t count = currentLayers.size(); 2237 snprintf(buffer, SIZE, "Visible layers (count = %d)\n", count); 2238 result.append(buffer); 2239 for (size_t i=0 ; i<count ; i++) { 2240 const sp<LayerBase>& layer(currentLayers[i]); 2241 layer->dump(result, buffer, SIZE); 2242 } 2243 2244 /* 2245 * Dump the layers in the purgatory 2246 */ 2247 2248 const size_t purgatorySize = mLayerPurgatory.size(); 2249 snprintf(buffer, SIZE, "Purgatory state (%d entries)\n", purgatorySize); 2250 result.append(buffer); 2251 for (size_t i=0 ; i<purgatorySize ; i++) { 2252 const sp<LayerBase>& layer(mLayerPurgatory.itemAt(i)); 2253 layer->shortDump(result, buffer, SIZE); 2254 } 2255 2256 /* 2257 * Dump Display state 2258 */ 2259 2260 snprintf(buffer, SIZE, "Displays (%d entries)\n", mDisplays.size()); 2261 result.append(buffer); 2262 for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { 2263 const sp<const DisplayDevice>& hw(mDisplays[dpy]); 2264 hw->dump(result, buffer, SIZE); 2265 } 2266 2267 /* 2268 * Dump SurfaceFlinger global state 2269 */ 2270 2271 snprintf(buffer, SIZE, "SurfaceFlinger global state:\n"); 2272 result.append(buffer); 2273 2274 HWComposer& hwc(getHwComposer()); 2275 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2276 const GLExtensions& extensions(GLExtensions::getInstance()); 2277 snprintf(buffer, SIZE, "GLES: %s, %s, %s\n", 2278 extensions.getVendor(), 2279 extensions.getRenderer(), 2280 extensions.getVersion()); 2281 result.append(buffer); 2282 2283 snprintf(buffer, SIZE, "EGL : %s\n", 2284 eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID)); 2285 result.append(buffer); 2286 2287 snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension()); 2288 result.append(buffer); 2289 2290 hw->undefinedRegion.dump(result, "undefinedRegion"); 2291 snprintf(buffer, SIZE, 2292 " orientation=%d, canDraw=%d\n", 2293 hw->getOrientation(), hw->canDraw()); 2294 result.append(buffer); 2295 snprintf(buffer, SIZE, 2296 " last eglSwapBuffers() time: %f us\n" 2297 " last transaction time : %f us\n" 2298 " transaction-flags : %08x\n" 2299 " refresh-rate : %f fps\n" 2300 " x-dpi : %f\n" 2301 " y-dpi : %f\n", 2302 mLastSwapBufferTime/1000.0, 2303 mLastTransactionTime/1000.0, 2304 mTransactionFlags, 2305 1e9 / hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY), 2306 hwc.getDpiX(HWC_DISPLAY_PRIMARY), 2307 hwc.getDpiY(HWC_DISPLAY_PRIMARY)); 2308 result.append(buffer); 2309 2310 snprintf(buffer, SIZE, " eglSwapBuffers time: %f us\n", 2311 inSwapBuffersDuration/1000.0); 2312 result.append(buffer); 2313 2314 snprintf(buffer, SIZE, " transaction time: %f us\n", 2315 inTransactionDuration/1000.0); 2316 result.append(buffer); 2317 2318 /* 2319 * VSYNC state 2320 */ 2321 mEventThread->dump(result, buffer, SIZE); 2322 2323 /* 2324 * Dump HWComposer state 2325 */ 2326 snprintf(buffer, SIZE, "h/w composer state:\n"); 2327 result.append(buffer); 2328 snprintf(buffer, SIZE, " h/w composer %s and %s\n", 2329 hwc.initCheck()==NO_ERROR ? "present" : "not present", 2330 (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled"); 2331 result.append(buffer); 2332 hwc.dump(result, buffer, SIZE, hw->getVisibleLayersSortedByZ()); 2333 2334 /* 2335 * Dump gralloc state 2336 */ 2337 const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get()); 2338 alloc.dump(result); 2339} 2340 2341bool SurfaceFlinger::startDdmConnection() 2342{ 2343 void* libddmconnection_dso = 2344 dlopen("libsurfaceflinger_ddmconnection.so", RTLD_NOW); 2345 if (!libddmconnection_dso) { 2346 return false; 2347 } 2348 void (*DdmConnection_start)(const char* name); 2349 DdmConnection_start = 2350 (typeof DdmConnection_start)dlsym(libddmconnection_dso, "DdmConnection_start"); 2351 if (!DdmConnection_start) { 2352 dlclose(libddmconnection_dso); 2353 return false; 2354 } 2355 (*DdmConnection_start)(getServiceName()); 2356 return true; 2357} 2358 2359status_t SurfaceFlinger::onTransact( 2360 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 2361{ 2362 switch (code) { 2363 case CREATE_CONNECTION: 2364 case SET_TRANSACTION_STATE: 2365 case BOOT_FINISHED: 2366 case BLANK: 2367 case UNBLANK: 2368 { 2369 // codes that require permission check 2370 IPCThreadState* ipc = IPCThreadState::self(); 2371 const int pid = ipc->getCallingPid(); 2372 const int uid = ipc->getCallingUid(); 2373 if ((uid != AID_GRAPHICS) && 2374 !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) { 2375 ALOGE("Permission Denial: " 2376 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2377 return PERMISSION_DENIED; 2378 } 2379 break; 2380 } 2381 case CAPTURE_SCREEN: 2382 { 2383 // codes that require permission check 2384 IPCThreadState* ipc = IPCThreadState::self(); 2385 const int pid = ipc->getCallingPid(); 2386 const int uid = ipc->getCallingUid(); 2387 if ((uid != AID_GRAPHICS) && 2388 !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) { 2389 ALOGE("Permission Denial: " 2390 "can't read framebuffer pid=%d, uid=%d", pid, uid); 2391 return PERMISSION_DENIED; 2392 } 2393 break; 2394 } 2395 } 2396 2397 status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags); 2398 if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) { 2399 CHECK_INTERFACE(ISurfaceComposer, data, reply); 2400 if (CC_UNLIKELY(!PermissionCache::checkCallingPermission(sHardwareTest))) { 2401 IPCThreadState* ipc = IPCThreadState::self(); 2402 const int pid = ipc->getCallingPid(); 2403 const int uid = ipc->getCallingUid(); 2404 ALOGE("Permission Denial: " 2405 "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); 2406 return PERMISSION_DENIED; 2407 } 2408 int n; 2409 switch (code) { 2410 case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE 2411 case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE 2412 return NO_ERROR; 2413 case 1002: // SHOW_UPDATES 2414 n = data.readInt32(); 2415 mDebugRegion = n ? n : (mDebugRegion ? 0 : 1); 2416 invalidateHwcGeometry(); 2417 repaintEverything(); 2418 return NO_ERROR; 2419 case 1004:{ // repaint everything 2420 repaintEverything(); 2421 return NO_ERROR; 2422 } 2423 case 1005:{ // force transaction 2424 setTransactionFlags( 2425 eTransactionNeeded| 2426 eDisplayTransactionNeeded| 2427 eTraversalNeeded); 2428 return NO_ERROR; 2429 } 2430 case 1006:{ // send empty update 2431 signalRefresh(); 2432 return NO_ERROR; 2433 } 2434 case 1008: // toggle use of hw composer 2435 n = data.readInt32(); 2436 mDebugDisableHWC = n ? 1 : 0; 2437 invalidateHwcGeometry(); 2438 repaintEverything(); 2439 return NO_ERROR; 2440 case 1009: // toggle use of transform hint 2441 n = data.readInt32(); 2442 mDebugDisableTransformHint = n ? 1 : 0; 2443 invalidateHwcGeometry(); 2444 repaintEverything(); 2445 return NO_ERROR; 2446 case 1010: // interrogate. 2447 reply->writeInt32(0); 2448 reply->writeInt32(0); 2449 reply->writeInt32(mDebugRegion); 2450 reply->writeInt32(0); 2451 reply->writeInt32(mDebugDisableHWC); 2452 return NO_ERROR; 2453 case 1013: { 2454 Mutex::Autolock _l(mStateLock); 2455 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2456 reply->writeInt32(hw->getPageFlipCount()); 2457 } 2458 return NO_ERROR; 2459 } 2460 } 2461 return err; 2462} 2463 2464void SurfaceFlinger::repaintEverything() { 2465 android_atomic_or(1, &mRepaintEverything); 2466 signalTransaction(); 2467} 2468 2469// --------------------------------------------------------------------------- 2470 2471status_t SurfaceFlinger::renderScreenToTexture(uint32_t layerStack, 2472 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2473{ 2474 Mutex::Autolock _l(mStateLock); 2475 return renderScreenToTextureLocked(layerStack, textureName, uOut, vOut); 2476} 2477 2478status_t SurfaceFlinger::renderScreenToTextureLocked(uint32_t layerStack, 2479 GLuint* textureName, GLfloat* uOut, GLfloat* vOut) 2480{ 2481 ATRACE_CALL(); 2482 2483 if (!GLExtensions::getInstance().haveFramebufferObject()) 2484 return INVALID_OPERATION; 2485 2486 // get screen geometry 2487 // FIXME: figure out what it means to have a screenshot texture w/ multi-display 2488 sp<const DisplayDevice> hw(getDefaultDisplayDevice()); 2489 const uint32_t hw_w = hw->getWidth(); 2490 const uint32_t hw_h = hw->getHeight(); 2491 GLfloat u = 1; 2492 GLfloat v = 1; 2493 2494 // make sure to clear all GL error flags 2495 while ( glGetError() != GL_NO_ERROR ) ; 2496 2497 // create a FBO 2498 GLuint name, tname; 2499 glGenTextures(1, &tname); 2500 glBindTexture(GL_TEXTURE_2D, tname); 2501 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2502 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 2503 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2504 hw_w, hw_h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2505 if (glGetError() != GL_NO_ERROR) { 2506 while ( glGetError() != GL_NO_ERROR ) ; 2507 GLint tw = (2 << (31 - clz(hw_w))); 2508 GLint th = (2 << (31 - clz(hw_h))); 2509 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2510 tw, th, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); 2511 u = GLfloat(hw_w) / tw; 2512 v = GLfloat(hw_h) / th; 2513 } 2514 glGenFramebuffersOES(1, &name); 2515 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2516 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, 2517 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0); 2518 2519 DisplayDevice::setViewportAndProjection(hw); 2520 2521 // redraw the screen entirely... 2522 glDisable(GL_TEXTURE_EXTERNAL_OES); 2523 glDisable(GL_TEXTURE_2D); 2524 glClearColor(0,0,0,1); 2525 glClear(GL_COLOR_BUFFER_BIT); 2526 glMatrixMode(GL_MODELVIEW); 2527 glLoadIdentity(); 2528 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2529 const size_t count = layers.size(); 2530 for (size_t i=0 ; i<count ; ++i) { 2531 const sp<LayerBase>& layer(layers[i]); 2532 layer->draw(hw); 2533 } 2534 2535 hw->compositionComplete(); 2536 2537 // back to main framebuffer 2538 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2539 glDeleteFramebuffersOES(1, &name); 2540 2541 *textureName = tname; 2542 *uOut = u; 2543 *vOut = v; 2544 return NO_ERROR; 2545} 2546 2547// --------------------------------------------------------------------------- 2548 2549status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display, 2550 sp<IMemoryHeap>* heap, 2551 uint32_t* w, uint32_t* h, PixelFormat* f, 2552 uint32_t sw, uint32_t sh, 2553 uint32_t minLayerZ, uint32_t maxLayerZ) 2554{ 2555 ATRACE_CALL(); 2556 2557 status_t result = PERMISSION_DENIED; 2558 2559 if (!GLExtensions::getInstance().haveFramebufferObject()) { 2560 return INVALID_OPERATION; 2561 } 2562 2563 // get screen geometry 2564 sp<const DisplayDevice> hw(getDisplayDevice(display)); 2565 const uint32_t hw_w = hw->getWidth(); 2566 const uint32_t hw_h = hw->getHeight(); 2567 2568 // if we have secure windows on this display, never allow the screen capture 2569 if (hw->getSecureLayerVisible()) { 2570 ALOGW("FB is protected: PERMISSION_DENIED"); 2571 return PERMISSION_DENIED; 2572 } 2573 2574 if ((sw > hw_w) || (sh > hw_h)) { 2575 ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h); 2576 return BAD_VALUE; 2577 } 2578 2579 sw = (!sw) ? hw_w : sw; 2580 sh = (!sh) ? hw_h : sh; 2581 const size_t size = sw * sh * 4; 2582 const bool filtering = sw != hw_w || sh != hw_h; 2583 2584// ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d", 2585// sw, sh, minLayerZ, maxLayerZ); 2586 2587 // make sure to clear all GL error flags 2588 while ( glGetError() != GL_NO_ERROR ) ; 2589 2590 // create a FBO 2591 GLuint name, tname; 2592 glGenRenderbuffersOES(1, &tname); 2593 glBindRenderbufferOES(GL_RENDERBUFFER_OES, tname); 2594 glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_RGBA8_OES, sw, sh); 2595 2596 glGenFramebuffersOES(1, &name); 2597 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name); 2598 glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, 2599 GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, tname); 2600 2601 GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES); 2602 2603 if (status == GL_FRAMEBUFFER_COMPLETE_OES) { 2604 2605 // invert everything, b/c glReadPixel() below will invert the FB 2606 GLint viewport[4]; 2607 glGetIntegerv(GL_VIEWPORT, viewport); 2608 glViewport(0, 0, sw, sh); 2609 glMatrixMode(GL_PROJECTION); 2610 glPushMatrix(); 2611 glLoadIdentity(); 2612 glOrthof(0, hw_w, hw_h, 0, 0, 1); 2613 glMatrixMode(GL_MODELVIEW); 2614 2615 // redraw the screen entirely... 2616 glClearColor(0,0,0,1); 2617 glClear(GL_COLOR_BUFFER_BIT); 2618 2619 const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ()); 2620 const size_t count = layers.size(); 2621 for (size_t i=0 ; i<count ; ++i) { 2622 const sp<LayerBase>& layer(layers[i]); 2623 const uint32_t z = layer->drawingState().z; 2624 if (z >= minLayerZ && z <= maxLayerZ) { 2625 if (filtering) layer->setFiltering(true); 2626 layer->draw(hw); 2627 if (filtering) layer->setFiltering(false); 2628 } 2629 } 2630 2631 // check for errors and return screen capture 2632 if (glGetError() != GL_NO_ERROR) { 2633 // error while rendering 2634 result = INVALID_OPERATION; 2635 } else { 2636 // allocate shared memory large enough to hold the 2637 // screen capture 2638 sp<MemoryHeapBase> base( 2639 new MemoryHeapBase(size, 0, "screen-capture") ); 2640 void* const ptr = base->getBase(); 2641 if (ptr != MAP_FAILED) { 2642 // capture the screen with glReadPixels() 2643 ScopedTrace _t(ATRACE_TAG, "glReadPixels"); 2644 glReadPixels(0, 0, sw, sh, GL_RGBA, GL_UNSIGNED_BYTE, ptr); 2645 if (glGetError() == GL_NO_ERROR) { 2646 *heap = base; 2647 *w = sw; 2648 *h = sh; 2649 *f = PIXEL_FORMAT_RGBA_8888; 2650 result = NO_ERROR; 2651 } 2652 } else { 2653 result = NO_MEMORY; 2654 } 2655 } 2656 glViewport(viewport[0], viewport[1], viewport[2], viewport[3]); 2657 glMatrixMode(GL_PROJECTION); 2658 glPopMatrix(); 2659 glMatrixMode(GL_MODELVIEW); 2660 } else { 2661 result = BAD_VALUE; 2662 } 2663 2664 // release FBO resources 2665 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0); 2666 glDeleteRenderbuffersOES(1, &tname); 2667 glDeleteFramebuffersOES(1, &name); 2668 2669 hw->compositionComplete(); 2670 2671// ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK"); 2672 2673 return result; 2674} 2675 2676 2677status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, 2678 sp<IMemoryHeap>* heap, 2679 uint32_t* width, uint32_t* height, PixelFormat* format, 2680 uint32_t sw, uint32_t sh, 2681 uint32_t minLayerZ, uint32_t maxLayerZ) 2682{ 2683 if (CC_UNLIKELY(display == 0)) 2684 return BAD_VALUE; 2685 2686 if (!GLExtensions::getInstance().haveFramebufferObject()) 2687 return INVALID_OPERATION; 2688 2689 class MessageCaptureScreen : public MessageBase { 2690 SurfaceFlinger* flinger; 2691 sp<IBinder> display; 2692 sp<IMemoryHeap>* heap; 2693 uint32_t* w; 2694 uint32_t* h; 2695 PixelFormat* f; 2696 uint32_t sw; 2697 uint32_t sh; 2698 uint32_t minLayerZ; 2699 uint32_t maxLayerZ; 2700 status_t result; 2701 public: 2702 MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display, 2703 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f, 2704 uint32_t sw, uint32_t sh, 2705 uint32_t minLayerZ, uint32_t maxLayerZ) 2706 : flinger(flinger), display(display), 2707 heap(heap), w(w), h(h), f(f), sw(sw), sh(sh), 2708 minLayerZ(minLayerZ), maxLayerZ(maxLayerZ), 2709 result(PERMISSION_DENIED) 2710 { 2711 } 2712 status_t getResult() const { 2713 return result; 2714 } 2715 virtual bool handler() { 2716 Mutex::Autolock _l(flinger->mStateLock); 2717 result = flinger->captureScreenImplLocked(display, 2718 heap, w, h, f, sw, sh, minLayerZ, maxLayerZ); 2719 return true; 2720 } 2721 }; 2722 2723 sp<MessageBase> msg = new MessageCaptureScreen(this, 2724 display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ); 2725 status_t res = postMessageSync(msg); 2726 if (res == NO_ERROR) { 2727 res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult(); 2728 } 2729 return res; 2730} 2731 2732// --------------------------------------------------------------------------- 2733 2734SurfaceFlinger::LayerVector::LayerVector() { 2735} 2736 2737SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs) 2738 : SortedVector<sp<LayerBase> >(rhs) { 2739} 2740 2741int SurfaceFlinger::LayerVector::do_compare(const void* lhs, 2742 const void* rhs) const 2743{ 2744 // sort layers per layer-stack, then by z-order and finally by sequence 2745 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 2746 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 2747 2748 uint32_t ls = l->currentState().layerStack; 2749 uint32_t rs = r->currentState().layerStack; 2750 if (ls != rs) 2751 return ls - rs; 2752 2753 uint32_t lz = l->currentState().z; 2754 uint32_t rz = r->currentState().z; 2755 if (lz != rz) 2756 return lz - rz; 2757 2758 return l->sequence - r->sequence; 2759} 2760 2761// --------------------------------------------------------------------------- 2762 2763SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() 2764 : type(DisplayDevice::DISPLAY_ID_INVALID) { 2765} 2766 2767SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type) 2768 : type(type), layerStack(0), orientation(0) { 2769 viewport.makeInvalid(); 2770 frame.makeInvalid(); 2771} 2772 2773// --------------------------------------------------------------------------- 2774 2775}; // namespace android 2776