libs/gui/SurfaceComposerClient.cpp

   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 LOG_TAG "SurfaceComposerClient"
  18
  19 #include <stdint.h>
  20 #include <sys/types.h>
  21
  22 #include <utils/Errors.h>
  23 #include <utils/Log.h>
  24 #include <utils/Singleton.h>
  25 #include <utils/SortedVector.h>
  26 #include <utils/String8.h>
  27 #include <utils/threads.h>
  28
  29 #include <binder/IMemory.h>
  30 #include <binder/IServiceManager.h>
  31
  32 #include <ui/DisplayInfo.h>
  33
  34 #include <gui/ISurface.h>
  35 #include <gui/ISurfaceComposer.h>
  36 #include <gui/ISurfaceComposerClient.h>
  37 #include <gui/SurfaceComposerClient.h>
  38
  39 #include <private/gui/ComposerService.h>
  40 #include <private/gui/LayerState.h>
  41
  42 namespace android {
  43 // ---------------------------------------------------------------------------
  44
  45 ANDROID_SINGLETON_STATIC_INSTANCE(ComposerService);
  46
  47 ComposerService::ComposerService()
  48 : Singleton<ComposerService>() {
  49     Mutex::Autolock _l(mLock);
  50     connectLocked();
  51 }
  52
  53 void ComposerService::connectLocked() {
  54     const String16 name("SurfaceFlinger");
  55     while (getService(name, &mComposerService) != NO_ERROR) {
  56         usleep(250000);
  57     }
  58     assert(mComposerService != NULL);
  59
  60     // Create the death listener.
  61     class DeathObserver : public IBinder::DeathRecipient {
  62         ComposerService& mComposerService;
  63         virtual void binderDied(const wp<IBinder>& who) {
  64             ALOGW("ComposerService remote (surfaceflinger) died [%p]",
  65                   who.unsafe_get());
  66             mComposerService.composerServiceDied();
  67         }
  68      public:
  69         DeathObserver(ComposerService& mgr) : mComposerService(mgr) { }
  70     };
  71
  72     mDeathObserver = new DeathObserver(*const_cast<ComposerService*>(this));
  73     mComposerService->asBinder()->linkToDeath(mDeathObserver);
  74 }
  75
  76 /*static*/ sp<ISurfaceComposer> ComposerService::getComposerService() {
  77     ComposerService& instance = ComposerService::getInstance();
  78     Mutex::Autolock _l(instance.mLock);
  79     if (instance.mComposerService == NULL) {
  80         ComposerService::getInstance().connectLocked();
  81         assert(instance.mComposerService != NULL);
  82         ALOGD("ComposerService reconnected");
  83     }
  84     return instance.mComposerService;
  85 }
  86
  87 void ComposerService::composerServiceDied()
  88 {
  89     Mutex::Autolock _l(mLock);
  90     mComposerService = NULL;
  91     mDeathObserver = NULL;
  92 }
  93
  94 // ---------------------------------------------------------------------------
  95
  96 static inline
  97 int compare_type(const ComposerState& lhs, const ComposerState& rhs) {
  98     if (lhs.client < rhs.client)  return -1;
  99     if (lhs.client > rhs.client)  return 1;
 100     if (lhs.state.surface < rhs.state.surface)  return -1;
 101     if (lhs.state.surface > rhs.state.surface)  return 1;
 102     return 0;
 103 }
 104
 105 static inline
 106 int compare_type(const DisplayState& lhs, const DisplayState& rhs) {
 107     return compare_type(lhs.token, rhs.token);
 108 }
 109
 110 class Composer : public Singleton<Composer>
 111 {
 112     friend class Singleton<Composer>;
 113
 114     mutable Mutex               mLock;
 115     SortedVector<ComposerState> mComposerStates;
 116     SortedVector<DisplayState > mDisplayStates;
 117     uint32_t                    mForceSynchronous;
 118     bool                        mAnimation;
 119
 120     Composer() : Singleton<Composer>(),
 121         mForceSynchronous(0),
 122         mAnimation(false)
 123     { }
 124
 125     void closeGlobalTransactionImpl(bool synchronous);
 126     void setAnimationTransactionImpl();
 127
 128     layer_state_t* getLayerStateLocked(
 129             const sp<SurfaceComposerClient>& client, SurfaceID id);
 130
 131     DisplayState& getDisplayStateLocked(const sp<IBinder>& token);
 132
 133 public:
 134     sp<IBinder> createDisplay(const String8& displayName);
 135     sp<IBinder> getBuiltInDisplay(int32_t id);
 136
 137     status_t setPosition(const sp<SurfaceComposerClient>& client, SurfaceID id,
 138             float x, float y);
 139     status_t setSize(const sp<SurfaceComposerClient>& client, SurfaceID id,
 140             uint32_t w, uint32_t h);
 141     status_t setLayer(const sp<SurfaceComposerClient>& client, SurfaceID id,
 142             int32_t z);
 143     status_t setFlags(const sp<SurfaceComposerClient>& client, SurfaceID id,
 144             uint32_t flags, uint32_t mask);
 145     status_t setTransparentRegionHint(
 146             const sp<SurfaceComposerClient>& client, SurfaceID id,
 147             const Region& transparentRegion);
 148     status_t setAlpha(const sp<SurfaceComposerClient>& client, SurfaceID id,
 149             float alpha);
 150     status_t setMatrix(const sp<SurfaceComposerClient>& client, SurfaceID id,
 151             float dsdx, float dtdx, float dsdy, float dtdy);
 152     status_t setOrientation(int orientation);
 153     status_t setCrop(const sp<SurfaceComposerClient>& client, SurfaceID id,
 154             const Rect& crop);
 155     status_t setLayerStack(const sp<SurfaceComposerClient>& client,
 156             SurfaceID id, uint32_t layerStack);
 157
 158     void setDisplaySurface(const sp<IBinder>& token, const sp<ISurfaceTexture>& surface);
 159     void setDisplayLayerStack(const sp<IBinder>& token, uint32_t layerStack);
 160     void setDisplayProjection(const sp<IBinder>& token,
 161             uint32_t orientation,
 162             const Rect& layerStackRect,
 163             const Rect& displayRect);
 164
 165     static void setAnimationTransaction() {
 166         Composer::getInstance().setAnimationTransactionImpl();
 167     }
 168
 169     static void closeGlobalTransaction(bool synchronous) {
 170         Composer::getInstance().closeGlobalTransactionImpl(synchronous);
 171     }
 172 };
 173
 174 ANDROID_SINGLETON_STATIC_INSTANCE(Composer);
 175
 176 // ---------------------------------------------------------------------------
 177
 178 sp<IBinder> Composer::createDisplay(const String8& displayName) {
 179     return ComposerService::getComposerService()->createDisplay(displayName);
 180 }
 181
 182 sp<IBinder> Composer::getBuiltInDisplay(int32_t id) {
 183     return ComposerService::getComposerService()->getBuiltInDisplay(id);
 184 }
 185
 186 void Composer::closeGlobalTransactionImpl(bool synchronous) {
 187     sp<ISurfaceComposer> sm(ComposerService::getComposerService());
 188
 189     Vector<ComposerState> transaction;
 190     Vector<DisplayState> displayTransaction;
 191     uint32_t flags = 0;
 192
 193     { // scope for the lock
 194         Mutex::Autolock _l(mLock);
 195         transaction = mComposerStates;
 196         mComposerStates.clear();
 197
 198         displayTransaction = mDisplayStates;
 199         mDisplayStates.clear();
 200
 201         if (synchronous || mForceSynchronous) {
 202             flags |= ISurfaceComposer::eSynchronous;
 203         }
 204         if (mAnimation) {
 205             flags |= ISurfaceComposer::eAnimation;
 206         }
 207
 208         mForceSynchronous = false;
 209         mAnimation = false;
 210     }
 211
 212    sm->setTransactionState(transaction, displayTransaction, flags);
 213 }
 214
 215 void Composer::setAnimationTransactionImpl() {
 216     Mutex::Autolock _l(mLock);
 217     mAnimation = true;
 218 }
 219
 220 layer_state_t* Composer::getLayerStateLocked(
 221         const sp<SurfaceComposerClient>& client, SurfaceID id) {
 222
 223     ComposerState s;
 224     s.client = client->mClient;
 225     s.state.surface = id;
 226
 227     ssize_t index = mComposerStates.indexOf(s);
 228     if (index < 0) {
 229         // we don't have it, add an initialized layer_state to our list
 230         index = mComposerStates.add(s);
 231     }
 232
 233     ComposerState* const out = mComposerStates.editArray();
 234     return &(out[index].state);
 235 }
 236
 237 status_t Composer::setPosition(const sp<SurfaceComposerClient>& client,
 238         SurfaceID id, float x, float y) {
 239     Mutex::Autolock _l(mLock);
 240     layer_state_t* s = getLayerStateLocked(client, id);
 241     if (!s)
 242         return BAD_INDEX;
 243     s->what |= layer_state_t::ePositionChanged;
 244     s->x = x;
 245     s->y = y;
 246     return NO_ERROR;
 247 }
 248
 249 status_t Composer::setSize(const sp<SurfaceComposerClient>& client,
 250         SurfaceID id, uint32_t w, uint32_t h) {
 251     Mutex::Autolock _l(mLock);
 252     layer_state_t* s = getLayerStateLocked(client, id);
 253     if (!s)
 254         return BAD_INDEX;
 255     s->what |= layer_state_t::eSizeChanged;
 256     s->w = w;
 257     s->h = h;
 258
 259     // Resizing a surface makes the transaction synchronous.
 260     mForceSynchronous = true;
 261
 262     return NO_ERROR;
 263 }
 264
 265 status_t Composer::setLayer(const sp<SurfaceComposerClient>& client,
 266         SurfaceID id, int32_t z) {
 267     Mutex::Autolock _l(mLock);
 268     layer_state_t* s = getLayerStateLocked(client, id);
 269     if (!s)
 270         return BAD_INDEX;
 271     s->what |= layer_state_t::eLayerChanged;
 272     s->z = z;
 273     return NO_ERROR;
 274 }
 275
 276 status_t Composer::setFlags(const sp<SurfaceComposerClient>& client,
 277         SurfaceID id, uint32_t flags,
 278         uint32_t mask) {
 279     Mutex::Autolock _l(mLock);
 280     layer_state_t* s = getLayerStateLocked(client, id);
 281     if (!s)
 282         return BAD_INDEX;
 283     s->what |= layer_state_t::eVisibilityChanged;
 284     s->flags &= ~mask;
 285     s->flags |= (flags & mask);
 286     s->mask |= mask;
 287     return NO_ERROR;
 288 }
 289
 290 status_t Composer::setTransparentRegionHint(
 291         const sp<SurfaceComposerClient>& client, SurfaceID id,
 292         const Region& transparentRegion) {
 293     Mutex::Autolock _l(mLock);
 294     layer_state_t* s = getLayerStateLocked(client, id);
 295     if (!s)
 296         return BAD_INDEX;
 297     s->what |= layer_state_t::eTransparentRegionChanged;
 298     s->transparentRegion = transparentRegion;
 299     return NO_ERROR;
 300 }
 301
 302 status_t Composer::setAlpha(const sp<SurfaceComposerClient>& client,
 303         SurfaceID id, float alpha) {
 304     Mutex::Autolock _l(mLock);
 305     layer_state_t* s = getLayerStateLocked(client, id);
 306     if (!s)
 307         return BAD_INDEX;
 308     s->what |= layer_state_t::eAlphaChanged;
 309     s->alpha = alpha;
 310     return NO_ERROR;
 311 }
 312
 313 status_t Composer::setLayerStack(const sp<SurfaceComposerClient>& client,
 314         SurfaceID id, uint32_t layerStack) {
 315     Mutex::Autolock _l(mLock);
 316     layer_state_t* s = getLayerStateLocked(client, id);
 317     if (!s)
 318         return BAD_INDEX;
 319     s->what |= layer_state_t::eLayerStackChanged;
 320     s->layerStack = layerStack;
 321     return NO_ERROR;
 322 }
 323
 324 status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
 325         SurfaceID id, float dsdx, float dtdx,
 326         float dsdy, float dtdy) {
 327     Mutex::Autolock _l(mLock);
 328     layer_state_t* s = getLayerStateLocked(client, id);
 329     if (!s)
 330         return BAD_INDEX;
 331     s->what |= layer_state_t::eMatrixChanged;
 332     layer_state_t::matrix22_t matrix;
 333     matrix.dsdx = dsdx;
 334     matrix.dtdx = dtdx;
 335     matrix.dsdy = dsdy;
 336     matrix.dtdy = dtdy;
 337     s->matrix = matrix;
 338     return NO_ERROR;
 339 }
 340
 341 status_t Composer::setCrop(const sp<SurfaceComposerClient>& client,
 342         SurfaceID id, const Rect& crop) {
 343     Mutex::Autolock _l(mLock);
 344     layer_state_t* s = getLayerStateLocked(client, id);
 345     if (!s)
 346         return BAD_INDEX;
 347     s->what |= layer_state_t::eCropChanged;
 348     s->crop = crop;
 349     return NO_ERROR;
 350 }
 351
 352 // ---------------------------------------------------------------------------
 353
 354 DisplayState& Composer::getDisplayStateLocked(const sp<IBinder>& token) {
 355     DisplayState s;
 356     s.token = token;
 357     ssize_t index = mDisplayStates.indexOf(s);
 358     if (index < 0) {
 359         // we don't have it, add an initialized layer_state to our list
 360         s.what = 0;
 361         index = mDisplayStates.add(s);
 362     }
 363     return mDisplayStates.editItemAt(index);
 364 }
 365
 366 void Composer::setDisplaySurface(const sp<IBinder>& token,
 367         const sp<ISurfaceTexture>& surface) {
 368     Mutex::Autolock _l(mLock);
 369     DisplayState& s(getDisplayStateLocked(token));
 370     s.surface = surface;
 371     s.what |= DisplayState::eSurfaceChanged;
 372 }
 373
 374 void Composer::setDisplayLayerStack(const sp<IBinder>& token,
 375         uint32_t layerStack) {
 376     Mutex::Autolock _l(mLock);
 377     DisplayState& s(getDisplayStateLocked(token));
 378     s.layerStack = layerStack;
 379     s.what |= DisplayState::eLayerStackChanged;
 380 }
 381
 382 void Composer::setDisplayProjection(const sp<IBinder>& token,
 383         uint32_t orientation,
 384         const Rect& layerStackRect,
 385         const Rect& displayRect) {
 386     Mutex::Autolock _l(mLock);
 387     DisplayState& s(getDisplayStateLocked(token));
 388     s.orientation = orientation;
 389     s.viewport = layerStackRect;
 390     s.frame = displayRect;
 391     s.what |= DisplayState::eDisplayProjectionChanged;
 392     mForceSynchronous = true; // TODO: do we actually still need this?
 393 }
 394
 395 // ---------------------------------------------------------------------------
 396
 397 SurfaceComposerClient::SurfaceComposerClient()
 398     : mStatus(NO_INIT), mComposer(Composer::getInstance())
 399 {
 400 }
 401
 402 void SurfaceComposerClient::onFirstRef() {
 403     sp<ISurfaceComposer> sm(ComposerService::getComposerService());
 404     if (sm != 0) {
 405         sp<ISurfaceComposerClient> conn = sm->createConnection();
 406         if (conn != 0) {
 407             mClient = conn;
 408             mStatus = NO_ERROR;
 409         }
 410     }
 411 }
 412
 413 SurfaceComposerClient::~SurfaceComposerClient() {
 414     dispose();
 415 }
 416
 417 status_t SurfaceComposerClient::initCheck() const {
 418     return mStatus;
 419 }
 420
 421 sp<IBinder> SurfaceComposerClient::connection() const {
 422     return (mClient != 0) ? mClient->asBinder() : 0;
 423 }
 424
 425 status_t SurfaceComposerClient::linkToComposerDeath(
 426         const sp<IBinder::DeathRecipient>& recipient,
 427         void* cookie, uint32_t flags) {
 428     sp<ISurfaceComposer> sm(ComposerService::getComposerService());
 429     return sm->asBinder()->linkToDeath(recipient, cookie, flags);
 430 }
 431
 432 void SurfaceComposerClient::dispose() {
 433     // this can be called more than once.
 434     sp<ISurfaceComposerClient> client;
 435     Mutex::Autolock _lm(mLock);
 436     if (mClient != 0) {
 437         client = mClient; // hold ref while lock is held
 438         mClient.clear();
 439     }
 440     mStatus = NO_INIT;
 441 }
 442
 443 sp<SurfaceControl> SurfaceComposerClient::createSurface(
 444         const String8& name,
 445         uint32_t w,
 446         uint32_t h,
 447         PixelFormat format,
 448         uint32_t flags)
 449 {
 450     sp<SurfaceControl> result;
 451     if (mStatus == NO_ERROR) {
 452         ISurfaceComposerClient::surface_data_t data;
 453         sp<ISurface> surface = mClient->createSurface(&data, name,
 454                 w, h, format, flags);
 455         if (surface != 0) {
 456             result = new SurfaceControl(this, surface, data);
 457         }
 458     }
 459     return result;
 460 }
 461
 462 sp<IBinder> SurfaceComposerClient::createDisplay(const String8& displayName) {
 463     return Composer::getInstance().createDisplay(displayName);
 464 }
 465
 466 sp<IBinder> SurfaceComposerClient::getBuiltInDisplay(int32_t id) {
 467     return Composer::getInstance().getBuiltInDisplay(id);
 468 }
 469
 470 status_t SurfaceComposerClient::destroySurface(SurfaceID sid) {
 471     if (mStatus != NO_ERROR)
 472         return mStatus;
 473     status_t err = mClient->destroySurface(sid);
 474     return err;
 475 }
 476
 477 inline Composer& SurfaceComposerClient::getComposer() {
 478     return mComposer;
 479 }
 480
 481 // ----------------------------------------------------------------------------
 482
 483 void SurfaceComposerClient::openGlobalTransaction() {
 484     // Currently a no-op
 485 }
 486
 487 void SurfaceComposerClient::closeGlobalTransaction(bool synchronous) {
 488     Composer::closeGlobalTransaction(synchronous);
 489 }
 490
 491 void SurfaceComposerClient::setAnimationTransaction() {
 492     Composer::setAnimationTransaction();
 493 }
 494
 495 // ----------------------------------------------------------------------------
 496
 497 status_t SurfaceComposerClient::setCrop(SurfaceID id, const Rect& crop) {
 498     return getComposer().setCrop(this, id, crop);
 499 }
 500
 501 status_t SurfaceComposerClient::setPosition(SurfaceID id, float x, float y) {
 502     return getComposer().setPosition(this, id, x, y);
 503 }
 504
 505 status_t SurfaceComposerClient::setSize(SurfaceID id, uint32_t w, uint32_t h) {
 506     return getComposer().setSize(this, id, w, h);
 507 }
 508
 509 status_t SurfaceComposerClient::setLayer(SurfaceID id, int32_t z) {
 510     return getComposer().setLayer(this, id, z);
 511 }
 512
 513 status_t SurfaceComposerClient::hide(SurfaceID id) {
 514     return getComposer().setFlags(this, id,
 515             layer_state_t::eLayerHidden,
 516             layer_state_t::eLayerHidden);
 517 }
 518
 519 status_t SurfaceComposerClient::show(SurfaceID id) {
 520     return getComposer().setFlags(this, id,
 521             0,
 522             layer_state_t::eLayerHidden);
 523 }
 524
 525 status_t SurfaceComposerClient::setFlags(SurfaceID id, uint32_t flags,
 526         uint32_t mask) {
 527     return getComposer().setFlags(this, id, flags, mask);
 528 }
 529
 530 status_t SurfaceComposerClient::setTransparentRegionHint(SurfaceID id,
 531         const Region& transparentRegion) {
 532     return getComposer().setTransparentRegionHint(this, id, transparentRegion);
 533 }
 534
 535 status_t SurfaceComposerClient::setAlpha(SurfaceID id, float alpha) {
 536     return getComposer().setAlpha(this, id, alpha);
 537 }
 538
 539 status_t SurfaceComposerClient::setLayerStack(SurfaceID id, uint32_t layerStack) {
 540     return getComposer().setLayerStack(this, id, layerStack);
 541 }
 542
 543 status_t SurfaceComposerClient::setMatrix(SurfaceID id, float dsdx, float dtdx,
 544         float dsdy, float dtdy) {
 545     return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
 546 }
 547
 548 // ----------------------------------------------------------------------------
 549
 550 void SurfaceComposerClient::setDisplaySurface(const sp<IBinder>& token,
 551         const sp<ISurfaceTexture>& surface) {
 552     Composer::getInstance().setDisplaySurface(token, surface);
 553 }
 554
 555 void SurfaceComposerClient::setDisplayLayerStack(const sp<IBinder>& token,
 556         uint32_t layerStack) {
 557     Composer::getInstance().setDisplayLayerStack(token, layerStack);
 558 }
 559
 560 void SurfaceComposerClient::setDisplayProjection(const sp<IBinder>& token,
 561         uint32_t orientation,
 562         const Rect& layerStackRect,
 563         const Rect& displayRect) {
 564     Composer::getInstance().setDisplayProjection(token, orientation,
 565             layerStackRect, displayRect);
 566 }
 567
 568 // ----------------------------------------------------------------------------
 569
 570 status_t SurfaceComposerClient::getDisplayInfo(
 571         const sp<IBinder>& display, DisplayInfo* info)
 572 {
 573     return ComposerService::getComposerService()->getDisplayInfo(display, info);
 574 }
 575
 576 void SurfaceComposerClient::blankDisplay(const sp<IBinder>& token) {
 577     ComposerService::getComposerService()->blank(token);
 578 }
 579
 580 void SurfaceComposerClient::unblankDisplay(const sp<IBinder>& token) {
 581     ComposerService::getComposerService()->unblank(token);
 582 }
 583
 584 // ----------------------------------------------------------------------------
 585
 586 ScreenshotClient::ScreenshotClient()
 587     : mWidth(0), mHeight(0), mFormat(PIXEL_FORMAT_NONE) {
 588 }
 589
 590 status_t ScreenshotClient::update(const sp<IBinder>& display) {
 591     sp<ISurfaceComposer> s(ComposerService::getComposerService());
 592     if (s == NULL) return NO_INIT;
 593     mHeap = 0;
 594     return s->captureScreen(display, &mHeap,
 595             &mWidth, &mHeight, &mFormat, 0, 0,
 596             0, -1UL);
 597 }
 598
 599 status_t ScreenshotClient::update(const sp<IBinder>& display,
 600         uint32_t reqWidth, uint32_t reqHeight) {
 601     sp<ISurfaceComposer> s(ComposerService::getComposerService());
 602     if (s == NULL) return NO_INIT;
 603     mHeap = 0;
 604     return s->captureScreen(display, &mHeap,
 605             &mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
 606             0, -1UL);
 607 }
 608
 609 status_t ScreenshotClient::update(const sp<IBinder>& display,
 610         uint32_t reqWidth, uint32_t reqHeight,
 611         uint32_t minLayerZ, uint32_t maxLayerZ) {
 612     sp<ISurfaceComposer> s(ComposerService::getComposerService());
 613     if (s == NULL) return NO_INIT;
 614     mHeap = 0;
 615     return s->captureScreen(display, &mHeap,
 616             &mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
 617             minLayerZ, maxLayerZ);
 618 }
 619
 620 void ScreenshotClient::release() {
 621     mHeap = 0;
 622 }
 623
 624 void const* ScreenshotClient::getPixels() const {
 625     return mHeap->getBase();
 626 }
 627
 628 uint32_t ScreenshotClient::getWidth() const {
 629     return mWidth;
 630 }
 631
 632 uint32_t ScreenshotClient::getHeight() const {
 633     return mHeight;
 634 }
 635
 636 PixelFormat ScreenshotClient::getFormat() const {
 637     return mFormat;
 638 }
 639
 640 uint32_t ScreenshotClient::getStride() const {
 641     return mWidth;
 642 }
 643
 644 size_t ScreenshotClient::getSize() const {
 645     return mHeap->getSize();
 646 }
 647
 648 // ----------------------------------------------------------------------------
 649 }; // namespace android