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      1 /*
      2  * Copyright (C) 2010 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 "Surface"
     18 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
     19 //#define LOG_NDEBUG 0
     20 
     21 #include <gui/Surface.h>
     22 
     23 #include <inttypes.h>
     24 
     25 #include <android/native_window.h>
     26 
     27 #include <utils/Log.h>
     28 #include <utils/Trace.h>
     29 #include <utils/NativeHandle.h>
     30 
     31 #include <ui/DisplayStatInfo.h>
     32 #include <ui/Fence.h>
     33 #include <ui/HdrCapabilities.h>
     34 #include <ui/Region.h>
     35 
     36 #include <gui/BufferItem.h>
     37 #include <gui/IProducerListener.h>
     38 
     39 #include <gui/ISurfaceComposer.h>
     40 #include <private/gui/ComposerService.h>
     41 
     42 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
     43 #include <configstore/Utils.h>
     44 
     45 namespace android {
     46 
     47 using ui::ColorMode;
     48 using ui::Dataspace;
     49 
     50 Surface::Surface(const sp<IGraphicBufferProducer>& bufferProducer, bool controlledByApp)
     51       : mGraphicBufferProducer(bufferProducer),
     52         mCrop(Rect::EMPTY_RECT),
     53         mBufferAge(0),
     54         mGenerationNumber(0),
     55         mSharedBufferMode(false),
     56         mAutoRefresh(false),
     57         mSharedBufferSlot(BufferItem::INVALID_BUFFER_SLOT),
     58         mSharedBufferHasBeenQueued(false),
     59         mQueriedSupportedTimestamps(false),
     60         mFrameTimestampsSupportsPresent(false),
     61         mEnableFrameTimestamps(false),
     62         mFrameEventHistory(std::make_unique<ProducerFrameEventHistory>()) {
     63     // Initialize the ANativeWindow function pointers.
     64     ANativeWindow::setSwapInterval  = hook_setSwapInterval;
     65     ANativeWindow::dequeueBuffer    = hook_dequeueBuffer;
     66     ANativeWindow::cancelBuffer     = hook_cancelBuffer;
     67     ANativeWindow::queueBuffer      = hook_queueBuffer;
     68     ANativeWindow::query            = hook_query;
     69     ANativeWindow::perform          = hook_perform;
     70 
     71     ANativeWindow::dequeueBuffer_DEPRECATED = hook_dequeueBuffer_DEPRECATED;
     72     ANativeWindow::cancelBuffer_DEPRECATED  = hook_cancelBuffer_DEPRECATED;
     73     ANativeWindow::lockBuffer_DEPRECATED    = hook_lockBuffer_DEPRECATED;
     74     ANativeWindow::queueBuffer_DEPRECATED   = hook_queueBuffer_DEPRECATED;
     75 
     76     const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
     77     const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
     78 
     79     mReqWidth = 0;
     80     mReqHeight = 0;
     81     mReqFormat = 0;
     82     mReqUsage = 0;
     83     mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
     84     mDataSpace = Dataspace::UNKNOWN;
     85     mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
     86     mTransform = 0;
     87     mStickyTransform = 0;
     88     mDefaultWidth = 0;
     89     mDefaultHeight = 0;
     90     mUserWidth = 0;
     91     mUserHeight = 0;
     92     mTransformHint = 0;
     93     mConsumerRunningBehind = false;
     94     mConnectedToCpu = false;
     95     mProducerControlledByApp = controlledByApp;
     96     mSwapIntervalZero = false;
     97 }
     98 
     99 Surface::~Surface() {
    100     if (mConnectedToCpu) {
    101         Surface::disconnect(NATIVE_WINDOW_API_CPU);
    102     }
    103 }
    104 
    105 sp<ISurfaceComposer> Surface::composerService() const {
    106     return ComposerService::getComposerService();
    107 }
    108 
    109 nsecs_t Surface::now() const {
    110     return systemTime();
    111 }
    112 
    113 sp<IGraphicBufferProducer> Surface::getIGraphicBufferProducer() const {
    114     return mGraphicBufferProducer;
    115 }
    116 
    117 void Surface::setSidebandStream(const sp<NativeHandle>& stream) {
    118     mGraphicBufferProducer->setSidebandStream(stream);
    119 }
    120 
    121 void Surface::allocateBuffers() {
    122     uint32_t reqWidth = mReqWidth ? mReqWidth : mUserWidth;
    123     uint32_t reqHeight = mReqHeight ? mReqHeight : mUserHeight;
    124     mGraphicBufferProducer->allocateBuffers(reqWidth, reqHeight,
    125             mReqFormat, mReqUsage);
    126 }
    127 
    128 status_t Surface::setGenerationNumber(uint32_t generation) {
    129     status_t result = mGraphicBufferProducer->setGenerationNumber(generation);
    130     if (result == NO_ERROR) {
    131         mGenerationNumber = generation;
    132     }
    133     return result;
    134 }
    135 
    136 uint64_t Surface::getNextFrameNumber() const {
    137     Mutex::Autolock lock(mMutex);
    138     return mNextFrameNumber;
    139 }
    140 
    141 String8 Surface::getConsumerName() const {
    142     return mGraphicBufferProducer->getConsumerName();
    143 }
    144 
    145 status_t Surface::setDequeueTimeout(nsecs_t timeout) {
    146     return mGraphicBufferProducer->setDequeueTimeout(timeout);
    147 }
    148 
    149 status_t Surface::getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
    150         sp<Fence>* outFence, float outTransformMatrix[16]) {
    151     return mGraphicBufferProducer->getLastQueuedBuffer(outBuffer, outFence,
    152             outTransformMatrix);
    153 }
    154 
    155 status_t Surface::getDisplayRefreshCycleDuration(nsecs_t* outRefreshDuration) {
    156     ATRACE_CALL();
    157 
    158     DisplayStatInfo stats;
    159     status_t result = composerService()->getDisplayStats(NULL, &stats);
    160     if (result != NO_ERROR) {
    161         return result;
    162     }
    163 
    164     *outRefreshDuration = stats.vsyncPeriod;
    165 
    166     return NO_ERROR;
    167 }
    168 
    169 void Surface::enableFrameTimestamps(bool enable) {
    170     Mutex::Autolock lock(mMutex);
    171     // If going from disabled to enabled, get the initial values for
    172     // compositor and display timing.
    173     if (!mEnableFrameTimestamps && enable) {
    174         FrameEventHistoryDelta delta;
    175         mGraphicBufferProducer->getFrameTimestamps(&delta);
    176         mFrameEventHistory->applyDelta(delta);
    177     }
    178     mEnableFrameTimestamps = enable;
    179 }
    180 
    181 status_t Surface::getCompositorTiming(
    182         nsecs_t* compositeDeadline, nsecs_t* compositeInterval,
    183         nsecs_t* compositeToPresentLatency) {
    184     Mutex::Autolock lock(mMutex);
    185     if (!mEnableFrameTimestamps) {
    186         return INVALID_OPERATION;
    187     }
    188 
    189     if (compositeDeadline != nullptr) {
    190         *compositeDeadline =
    191                 mFrameEventHistory->getNextCompositeDeadline(now());
    192     }
    193     if (compositeInterval != nullptr) {
    194         *compositeInterval = mFrameEventHistory->getCompositeInterval();
    195     }
    196     if (compositeToPresentLatency != nullptr) {
    197         *compositeToPresentLatency =
    198                 mFrameEventHistory->getCompositeToPresentLatency();
    199     }
    200     return NO_ERROR;
    201 }
    202 
    203 static bool checkConsumerForUpdates(
    204         const FrameEvents* e, const uint64_t lastFrameNumber,
    205         const nsecs_t* outLatchTime,
    206         const nsecs_t* outFirstRefreshStartTime,
    207         const nsecs_t* outLastRefreshStartTime,
    208         const nsecs_t* outGpuCompositionDoneTime,
    209         const nsecs_t* outDisplayPresentTime,
    210         const nsecs_t* outDequeueReadyTime,
    211         const nsecs_t* outReleaseTime) {
    212     bool checkForLatch = (outLatchTime != nullptr) && !e->hasLatchInfo();
    213     bool checkForFirstRefreshStart = (outFirstRefreshStartTime != nullptr) &&
    214             !e->hasFirstRefreshStartInfo();
    215     bool checkForGpuCompositionDone = (outGpuCompositionDoneTime != nullptr) &&
    216             !e->hasGpuCompositionDoneInfo();
    217     bool checkForDisplayPresent = (outDisplayPresentTime != nullptr) &&
    218             !e->hasDisplayPresentInfo();
    219 
    220     // LastRefreshStart, DequeueReady, and Release are never available for the
    221     // last frame.
    222     bool checkForLastRefreshStart = (outLastRefreshStartTime != nullptr) &&
    223             !e->hasLastRefreshStartInfo() &&
    224             (e->frameNumber != lastFrameNumber);
    225     bool checkForDequeueReady = (outDequeueReadyTime != nullptr) &&
    226             !e->hasDequeueReadyInfo() && (e->frameNumber != lastFrameNumber);
    227     bool checkForRelease = (outReleaseTime != nullptr) &&
    228             !e->hasReleaseInfo() && (e->frameNumber != lastFrameNumber);
    229 
    230     // RequestedPresent and Acquire info are always available producer-side.
    231     return checkForLatch || checkForFirstRefreshStart ||
    232             checkForLastRefreshStart || checkForGpuCompositionDone ||
    233             checkForDisplayPresent || checkForDequeueReady || checkForRelease;
    234 }
    235 
    236 static void getFrameTimestamp(nsecs_t *dst, const nsecs_t& src) {
    237     if (dst != nullptr) {
    238         // We always get valid timestamps for these eventually.
    239         *dst = (src == FrameEvents::TIMESTAMP_PENDING) ?
    240                 NATIVE_WINDOW_TIMESTAMP_PENDING : src;
    241     }
    242 }
    243 
    244 static void getFrameTimestampFence(nsecs_t *dst,
    245         const std::shared_ptr<FenceTime>& src, bool fenceShouldBeKnown) {
    246     if (dst != nullptr) {
    247         if (!fenceShouldBeKnown) {
    248             *dst = NATIVE_WINDOW_TIMESTAMP_PENDING;
    249             return;
    250         }
    251 
    252         nsecs_t signalTime = src->getSignalTime();
    253         *dst = (signalTime == Fence::SIGNAL_TIME_PENDING) ?
    254                     NATIVE_WINDOW_TIMESTAMP_PENDING :
    255                 (signalTime == Fence::SIGNAL_TIME_INVALID) ?
    256                     NATIVE_WINDOW_TIMESTAMP_INVALID :
    257                 signalTime;
    258     }
    259 }
    260 
    261 status_t Surface::getFrameTimestamps(uint64_t frameNumber,
    262         nsecs_t* outRequestedPresentTime, nsecs_t* outAcquireTime,
    263         nsecs_t* outLatchTime, nsecs_t* outFirstRefreshStartTime,
    264         nsecs_t* outLastRefreshStartTime, nsecs_t* outGpuCompositionDoneTime,
    265         nsecs_t* outDisplayPresentTime, nsecs_t* outDequeueReadyTime,
    266         nsecs_t* outReleaseTime) {
    267     ATRACE_CALL();
    268 
    269     Mutex::Autolock lock(mMutex);
    270 
    271     if (!mEnableFrameTimestamps) {
    272         return INVALID_OPERATION;
    273     }
    274 
    275     // Verify the requested timestamps are supported.
    276     querySupportedTimestampsLocked();
    277     if (outDisplayPresentTime != nullptr && !mFrameTimestampsSupportsPresent) {
    278         return BAD_VALUE;
    279     }
    280 
    281     FrameEvents* events = mFrameEventHistory->getFrame(frameNumber);
    282     if (events == nullptr) {
    283         // If the entry isn't available in the producer, it's definitely not
    284         // available in the consumer.
    285         return NAME_NOT_FOUND;
    286     }
    287 
    288     // Update our cache of events if the requested events are not available.
    289     if (checkConsumerForUpdates(events, mLastFrameNumber,
    290             outLatchTime, outFirstRefreshStartTime, outLastRefreshStartTime,
    291             outGpuCompositionDoneTime, outDisplayPresentTime,
    292             outDequeueReadyTime, outReleaseTime)) {
    293         FrameEventHistoryDelta delta;
    294         mGraphicBufferProducer->getFrameTimestamps(&delta);
    295         mFrameEventHistory->applyDelta(delta);
    296         events = mFrameEventHistory->getFrame(frameNumber);
    297     }
    298 
    299     if (events == nullptr) {
    300         // The entry was available before the update, but was overwritten
    301         // after the update. Make sure not to send the wrong frame's data.
    302         return NAME_NOT_FOUND;
    303     }
    304 
    305     getFrameTimestamp(outRequestedPresentTime, events->requestedPresentTime);
    306     getFrameTimestamp(outLatchTime, events->latchTime);
    307     getFrameTimestamp(outFirstRefreshStartTime, events->firstRefreshStartTime);
    308     getFrameTimestamp(outLastRefreshStartTime, events->lastRefreshStartTime);
    309     getFrameTimestamp(outDequeueReadyTime, events->dequeueReadyTime);
    310 
    311     getFrameTimestampFence(outAcquireTime, events->acquireFence,
    312             events->hasAcquireInfo());
    313     getFrameTimestampFence(outGpuCompositionDoneTime,
    314             events->gpuCompositionDoneFence,
    315             events->hasGpuCompositionDoneInfo());
    316     getFrameTimestampFence(outDisplayPresentTime, events->displayPresentFence,
    317             events->hasDisplayPresentInfo());
    318     getFrameTimestampFence(outReleaseTime, events->releaseFence,
    319             events->hasReleaseInfo());
    320 
    321     return NO_ERROR;
    322 }
    323 
    324 using namespace android::hardware::configstore;
    325 using namespace android::hardware::configstore::V1_0;
    326 
    327 status_t Surface::getWideColorSupport(bool* supported) {
    328     ATRACE_CALL();
    329 
    330     sp<IBinder> display(
    331         composerService()->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
    332     Vector<ColorMode> colorModes;
    333     status_t err =
    334         composerService()->getDisplayColorModes(display, &colorModes);
    335 
    336     if (err)
    337         return err;
    338 
    339     bool wideColorBoardConfig =
    340         getBool<ISurfaceFlingerConfigs,
    341                 &ISurfaceFlingerConfigs::hasWideColorDisplay>(false);
    342 
    343     *supported = false;
    344     for (ColorMode colorMode : colorModes) {
    345         switch (colorMode) {
    346             case ColorMode::DISPLAY_P3:
    347             case ColorMode::ADOBE_RGB:
    348             case ColorMode::DCI_P3:
    349                 if (wideColorBoardConfig) {
    350                     *supported = true;
    351                 }
    352                 break;
    353             default:
    354                 break;
    355         }
    356     }
    357 
    358     return NO_ERROR;
    359 }
    360 
    361 status_t Surface::getHdrSupport(bool* supported) {
    362     ATRACE_CALL();
    363 
    364     sp<IBinder> display(
    365         composerService()->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
    366     HdrCapabilities hdrCapabilities;
    367     status_t err =
    368         composerService()->getHdrCapabilities(display, &hdrCapabilities);
    369 
    370     if (err)
    371         return err;
    372 
    373     *supported = !hdrCapabilities.getSupportedHdrTypes().empty();
    374 
    375     return NO_ERROR;
    376 }
    377 
    378 int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
    379     Surface* c = getSelf(window);
    380     return c->setSwapInterval(interval);
    381 }
    382 
    383 int Surface::hook_dequeueBuffer(ANativeWindow* window,
    384         ANativeWindowBuffer** buffer, int* fenceFd) {
    385     Surface* c = getSelf(window);
    386     return c->dequeueBuffer(buffer, fenceFd);
    387 }
    388 
    389 int Surface::hook_cancelBuffer(ANativeWindow* window,
    390         ANativeWindowBuffer* buffer, int fenceFd) {
    391     Surface* c = getSelf(window);
    392     return c->cancelBuffer(buffer, fenceFd);
    393 }
    394 
    395 int Surface::hook_queueBuffer(ANativeWindow* window,
    396         ANativeWindowBuffer* buffer, int fenceFd) {
    397     Surface* c = getSelf(window);
    398     return c->queueBuffer(buffer, fenceFd);
    399 }
    400 
    401 int Surface::hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
    402         ANativeWindowBuffer** buffer) {
    403     Surface* c = getSelf(window);
    404     ANativeWindowBuffer* buf;
    405     int fenceFd = -1;
    406     int result = c->dequeueBuffer(&buf, &fenceFd);
    407     if (result != OK) {
    408         return result;
    409     }
    410     sp<Fence> fence(new Fence(fenceFd));
    411     int waitResult = fence->waitForever("dequeueBuffer_DEPRECATED");
    412     if (waitResult != OK) {
    413         ALOGE("dequeueBuffer_DEPRECATED: Fence::wait returned an error: %d",
    414                 waitResult);
    415         c->cancelBuffer(buf, -1);
    416         return waitResult;
    417     }
    418     *buffer = buf;
    419     return result;
    420 }
    421 
    422 int Surface::hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
    423         ANativeWindowBuffer* buffer) {
    424     Surface* c = getSelf(window);
    425     return c->cancelBuffer(buffer, -1);
    426 }
    427 
    428 int Surface::hook_lockBuffer_DEPRECATED(ANativeWindow* window,
    429         ANativeWindowBuffer* buffer) {
    430     Surface* c = getSelf(window);
    431     return c->lockBuffer_DEPRECATED(buffer);
    432 }
    433 
    434 int Surface::hook_queueBuffer_DEPRECATED(ANativeWindow* window,
    435         ANativeWindowBuffer* buffer) {
    436     Surface* c = getSelf(window);
    437     return c->queueBuffer(buffer, -1);
    438 }
    439 
    440 int Surface::hook_query(const ANativeWindow* window,
    441                                 int what, int* value) {
    442     const Surface* c = getSelf(window);
    443     return c->query(what, value);
    444 }
    445 
    446 int Surface::hook_perform(ANativeWindow* window, int operation, ...) {
    447     va_list args;
    448     va_start(args, operation);
    449     Surface* c = getSelf(window);
    450     int result = c->perform(operation, args);
    451     va_end(args);
    452     return result;
    453 }
    454 
    455 int Surface::setSwapInterval(int interval) {
    456     ATRACE_CALL();
    457     // EGL specification states:
    458     //  interval is silently clamped to minimum and maximum implementation
    459     //  dependent values before being stored.
    460 
    461     if (interval < minSwapInterval)
    462         interval = minSwapInterval;
    463 
    464     if (interval > maxSwapInterval)
    465         interval = maxSwapInterval;
    466 
    467     mSwapIntervalZero = (interval == 0);
    468     mGraphicBufferProducer->setAsyncMode(mSwapIntervalZero);
    469 
    470     return NO_ERROR;
    471 }
    472 
    473 int Surface::dequeueBuffer(android_native_buffer_t** buffer, int* fenceFd) {
    474     ATRACE_CALL();
    475     ALOGV("Surface::dequeueBuffer");
    476 
    477     uint32_t reqWidth;
    478     uint32_t reqHeight;
    479     PixelFormat reqFormat;
    480     uint64_t reqUsage;
    481     bool enableFrameTimestamps;
    482 
    483     {
    484         Mutex::Autolock lock(mMutex);
    485         if (mReportRemovedBuffers) {
    486             mRemovedBuffers.clear();
    487         }
    488 
    489         reqWidth = mReqWidth ? mReqWidth : mUserWidth;
    490         reqHeight = mReqHeight ? mReqHeight : mUserHeight;
    491 
    492         reqFormat = mReqFormat;
    493         reqUsage = mReqUsage;
    494 
    495         enableFrameTimestamps = mEnableFrameTimestamps;
    496 
    497         if (mSharedBufferMode && mAutoRefresh && mSharedBufferSlot !=
    498                 BufferItem::INVALID_BUFFER_SLOT) {
    499             sp<GraphicBuffer>& gbuf(mSlots[mSharedBufferSlot].buffer);
    500             if (gbuf != NULL) {
    501                 *buffer = gbuf.get();
    502                 *fenceFd = -1;
    503                 return OK;
    504             }
    505         }
    506     } // Drop the lock so that we can still touch the Surface while blocking in IGBP::dequeueBuffer
    507 
    508     int buf = -1;
    509     sp<Fence> fence;
    510     nsecs_t startTime = systemTime();
    511 
    512     FrameEventHistoryDelta frameTimestamps;
    513     status_t result = mGraphicBufferProducer->dequeueBuffer(&buf, &fence, reqWidth, reqHeight,
    514                                                             reqFormat, reqUsage, &mBufferAge,
    515                                                             enableFrameTimestamps ? &frameTimestamps
    516                                                                                   : nullptr);
    517     mLastDequeueDuration = systemTime() - startTime;
    518 
    519     if (result < 0) {
    520         ALOGV("dequeueBuffer: IGraphicBufferProducer::dequeueBuffer"
    521                 "(%d, %d, %d, %#" PRIx64 ") failed: %d",
    522                 reqWidth, reqHeight, reqFormat, reqUsage, result);
    523         return result;
    524     }
    525 
    526     if (buf < 0 || buf >= NUM_BUFFER_SLOTS) {
    527         ALOGE("dequeueBuffer: IGraphicBufferProducer returned invalid slot number %d", buf);
    528         android_errorWriteLog(0x534e4554, "36991414"); // SafetyNet logging
    529         return FAILED_TRANSACTION;
    530     }
    531 
    532     Mutex::Autolock lock(mMutex);
    533 
    534     // Write this while holding the mutex
    535     mLastDequeueStartTime = startTime;
    536 
    537     sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);
    538 
    539     // this should never happen
    540     ALOGE_IF(fence == NULL, "Surface::dequeueBuffer: received null Fence! buf=%d", buf);
    541 
    542     if (result & IGraphicBufferProducer::RELEASE_ALL_BUFFERS) {
    543         freeAllBuffers();
    544     }
    545 
    546     if (enableFrameTimestamps) {
    547          mFrameEventHistory->applyDelta(frameTimestamps);
    548     }
    549 
    550     if ((result & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) || gbuf == nullptr) {
    551         if (mReportRemovedBuffers && (gbuf != nullptr)) {
    552             mRemovedBuffers.push_back(gbuf);
    553         }
    554         result = mGraphicBufferProducer->requestBuffer(buf, &gbuf);
    555         if (result != NO_ERROR) {
    556             ALOGE("dequeueBuffer: IGraphicBufferProducer::requestBuffer failed: %d", result);
    557             mGraphicBufferProducer->cancelBuffer(buf, fence);
    558             return result;
    559         }
    560     }
    561 
    562     if (fence->isValid()) {
    563         *fenceFd = fence->dup();
    564         if (*fenceFd == -1) {
    565             ALOGE("dequeueBuffer: error duping fence: %d", errno);
    566             // dup() should never fail; something is badly wrong. Soldier on
    567             // and hope for the best; the worst that should happen is some
    568             // visible corruption that lasts until the next frame.
    569         }
    570     } else {
    571         *fenceFd = -1;
    572     }
    573 
    574     *buffer = gbuf.get();
    575 
    576     if (mSharedBufferMode && mAutoRefresh) {
    577         mSharedBufferSlot = buf;
    578         mSharedBufferHasBeenQueued = false;
    579     } else if (mSharedBufferSlot == buf) {
    580         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
    581         mSharedBufferHasBeenQueued = false;
    582     }
    583 
    584     return OK;
    585 }
    586 
    587 int Surface::cancelBuffer(android_native_buffer_t* buffer,
    588         int fenceFd) {
    589     ATRACE_CALL();
    590     ALOGV("Surface::cancelBuffer");
    591     Mutex::Autolock lock(mMutex);
    592     int i = getSlotFromBufferLocked(buffer);
    593     if (i < 0) {
    594         if (fenceFd >= 0) {
    595             close(fenceFd);
    596         }
    597         return i;
    598     }
    599     if (mSharedBufferSlot == i && mSharedBufferHasBeenQueued) {
    600         if (fenceFd >= 0) {
    601             close(fenceFd);
    602         }
    603         return OK;
    604     }
    605     sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
    606     mGraphicBufferProducer->cancelBuffer(i, fence);
    607 
    608     if (mSharedBufferMode && mAutoRefresh && mSharedBufferSlot == i) {
    609         mSharedBufferHasBeenQueued = true;
    610     }
    611 
    612     return OK;
    613 }
    614 
    615 int Surface::getSlotFromBufferLocked(
    616         android_native_buffer_t* buffer) const {
    617     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
    618         if (mSlots[i].buffer != NULL &&
    619                 mSlots[i].buffer->handle == buffer->handle) {
    620             return i;
    621         }
    622     }
    623     ALOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
    624     return BAD_VALUE;
    625 }
    626 
    627 int Surface::lockBuffer_DEPRECATED(android_native_buffer_t* buffer __attribute__((unused))) {
    628     ALOGV("Surface::lockBuffer");
    629     Mutex::Autolock lock(mMutex);
    630     return OK;
    631 }
    632 
    633 int Surface::queueBuffer(android_native_buffer_t* buffer, int fenceFd) {
    634     ATRACE_CALL();
    635     ALOGV("Surface::queueBuffer");
    636     Mutex::Autolock lock(mMutex);
    637     int64_t timestamp;
    638     bool isAutoTimestamp = false;
    639 
    640     if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
    641         timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
    642         isAutoTimestamp = true;
    643         ALOGV("Surface::queueBuffer making up timestamp: %.2f ms",
    644             timestamp / 1000000.0);
    645     } else {
    646         timestamp = mTimestamp;
    647     }
    648     int i = getSlotFromBufferLocked(buffer);
    649     if (i < 0) {
    650         if (fenceFd >= 0) {
    651             close(fenceFd);
    652         }
    653         return i;
    654     }
    655     if (mSharedBufferSlot == i && mSharedBufferHasBeenQueued) {
    656         if (fenceFd >= 0) {
    657             close(fenceFd);
    658         }
    659         return OK;
    660     }
    661 
    662 
    663     // Make sure the crop rectangle is entirely inside the buffer.
    664     Rect crop(Rect::EMPTY_RECT);
    665     mCrop.intersect(Rect(buffer->width, buffer->height), &crop);
    666 
    667     sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
    668     IGraphicBufferProducer::QueueBufferOutput output;
    669     IGraphicBufferProducer::QueueBufferInput input(timestamp, isAutoTimestamp,
    670             static_cast<android_dataspace>(mDataSpace), crop, mScalingMode,
    671             mTransform ^ mStickyTransform, fence, mStickyTransform,
    672             mEnableFrameTimestamps);
    673 
    674     // we should send HDR metadata as needed if this becomes a bottleneck
    675     input.setHdrMetadata(mHdrMetadata);
    676 
    677     if (mConnectedToCpu || mDirtyRegion.bounds() == Rect::INVALID_RECT) {
    678         input.setSurfaceDamage(Region::INVALID_REGION);
    679     } else {
    680         // Here we do two things:
    681         // 1) The surface damage was specified using the OpenGL ES convention of
    682         //    the origin being in the bottom-left corner. Here we flip to the
    683         //    convention that the rest of the system uses (top-left corner) by
    684         //    subtracting all top/bottom coordinates from the buffer height.
    685         // 2) If the buffer is coming in rotated (for example, because the EGL
    686         //    implementation is reacting to the transform hint coming back from
    687         //    SurfaceFlinger), the surface damage needs to be rotated the
    688         //    opposite direction, since it was generated assuming an unrotated
    689         //    buffer (the app doesn't know that the EGL implementation is
    690         //    reacting to the transform hint behind its back). The
    691         //    transformations in the switch statement below apply those
    692         //    complementary rotations (e.g., if 90 degrees, rotate 270 degrees).
    693 
    694         int width = buffer->width;
    695         int height = buffer->height;
    696         bool rotated90 = (mTransform ^ mStickyTransform) &
    697                 NATIVE_WINDOW_TRANSFORM_ROT_90;
    698         if (rotated90) {
    699             std::swap(width, height);
    700         }
    701 
    702         Region flippedRegion;
    703         for (auto rect : mDirtyRegion) {
    704             int left = rect.left;
    705             int right = rect.right;
    706             int top = height - rect.bottom; // Flip from OpenGL convention
    707             int bottom = height - rect.top; // Flip from OpenGL convention
    708             switch (mTransform ^ mStickyTransform) {
    709                 case NATIVE_WINDOW_TRANSFORM_ROT_90: {
    710                     // Rotate 270 degrees
    711                     Rect flippedRect{top, width - right, bottom, width - left};
    712                     flippedRegion.orSelf(flippedRect);
    713                     break;
    714                 }
    715                 case NATIVE_WINDOW_TRANSFORM_ROT_180: {
    716                     // Rotate 180 degrees
    717                     Rect flippedRect{width - right, height - bottom,
    718                             width - left, height - top};
    719                     flippedRegion.orSelf(flippedRect);
    720                     break;
    721                 }
    722                 case NATIVE_WINDOW_TRANSFORM_ROT_270: {
    723                     // Rotate 90 degrees
    724                     Rect flippedRect{height - bottom, left,
    725                             height - top, right};
    726                     flippedRegion.orSelf(flippedRect);
    727                     break;
    728                 }
    729                 default: {
    730                     Rect flippedRect{left, top, right, bottom};
    731                     flippedRegion.orSelf(flippedRect);
    732                     break;
    733                 }
    734             }
    735         }
    736 
    737         input.setSurfaceDamage(flippedRegion);
    738     }
    739 
    740     nsecs_t now = systemTime();
    741     status_t err = mGraphicBufferProducer->queueBuffer(i, input, &output);
    742     mLastQueueDuration = systemTime() - now;
    743     if (err != OK)  {
    744         ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
    745     }
    746 
    747     if (mEnableFrameTimestamps) {
    748         mFrameEventHistory->applyDelta(output.frameTimestamps);
    749         // Update timestamps with the local acquire fence.
    750         // The consumer doesn't send it back to prevent us from having two
    751         // file descriptors of the same fence.
    752         mFrameEventHistory->updateAcquireFence(mNextFrameNumber,
    753                 std::make_shared<FenceTime>(std::move(fence)));
    754 
    755         // Cache timestamps of signaled fences so we can close their file
    756         // descriptors.
    757         mFrameEventHistory->updateSignalTimes();
    758     }
    759 
    760     mLastFrameNumber = mNextFrameNumber;
    761 
    762     mDefaultWidth = output.width;
    763     mDefaultHeight = output.height;
    764     mNextFrameNumber = output.nextFrameNumber;
    765 
    766     // Disable transform hint if sticky transform is set.
    767     if (mStickyTransform == 0) {
    768         mTransformHint = output.transformHint;
    769     }
    770 
    771     mConsumerRunningBehind = (output.numPendingBuffers >= 2);
    772 
    773     if (!mConnectedToCpu) {
    774         // Clear surface damage back to full-buffer
    775         mDirtyRegion = Region::INVALID_REGION;
    776     }
    777 
    778     if (mSharedBufferMode && mAutoRefresh && mSharedBufferSlot == i) {
    779         mSharedBufferHasBeenQueued = true;
    780     }
    781 
    782     mQueueBufferCondition.broadcast();
    783 
    784     return err;
    785 }
    786 
    787 void Surface::querySupportedTimestampsLocked() const {
    788     // mMutex must be locked when calling this method.
    789 
    790     if (mQueriedSupportedTimestamps) {
    791         return;
    792     }
    793     mQueriedSupportedTimestamps = true;
    794 
    795     std::vector<FrameEvent> supportedFrameTimestamps;
    796     status_t err = composerService()->getSupportedFrameTimestamps(
    797             &supportedFrameTimestamps);
    798 
    799     if (err != NO_ERROR) {
    800         return;
    801     }
    802 
    803     for (auto sft : supportedFrameTimestamps) {
    804         if (sft == FrameEvent::DISPLAY_PRESENT) {
    805             mFrameTimestampsSupportsPresent = true;
    806         }
    807     }
    808 }
    809 
    810 int Surface::query(int what, int* value) const {
    811     ATRACE_CALL();
    812     ALOGV("Surface::query");
    813     { // scope for the lock
    814         Mutex::Autolock lock(mMutex);
    815         switch (what) {
    816             case NATIVE_WINDOW_FORMAT:
    817                 if (mReqFormat) {
    818                     *value = static_cast<int>(mReqFormat);
    819                     return NO_ERROR;
    820                 }
    821                 break;
    822             case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER: {
    823                 if (composerService()->authenticateSurfaceTexture(
    824                         mGraphicBufferProducer)) {
    825                     *value = 1;
    826                 } else {
    827                     *value = 0;
    828                 }
    829                 return NO_ERROR;
    830             }
    831             case NATIVE_WINDOW_CONCRETE_TYPE:
    832                 *value = NATIVE_WINDOW_SURFACE;
    833                 return NO_ERROR;
    834             case NATIVE_WINDOW_DEFAULT_WIDTH:
    835                 *value = static_cast<int>(
    836                         mUserWidth ? mUserWidth : mDefaultWidth);
    837                 return NO_ERROR;
    838             case NATIVE_WINDOW_DEFAULT_HEIGHT:
    839                 *value = static_cast<int>(
    840                         mUserHeight ? mUserHeight : mDefaultHeight);
    841                 return NO_ERROR;
    842             case NATIVE_WINDOW_TRANSFORM_HINT:
    843                 *value = static_cast<int>(mTransformHint);
    844                 return NO_ERROR;
    845             case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND: {
    846                 status_t err = NO_ERROR;
    847                 if (!mConsumerRunningBehind) {
    848                     *value = 0;
    849                 } else {
    850                     err = mGraphicBufferProducer->query(what, value);
    851                     if (err == NO_ERROR) {
    852                         mConsumerRunningBehind = *value;
    853                     }
    854                 }
    855                 return err;
    856             }
    857             case NATIVE_WINDOW_BUFFER_AGE: {
    858                 if (mBufferAge > INT32_MAX) {
    859                     *value = 0;
    860                 } else {
    861                     *value = static_cast<int32_t>(mBufferAge);
    862                 }
    863                 return NO_ERROR;
    864             }
    865             case NATIVE_WINDOW_LAST_DEQUEUE_DURATION: {
    866                 int64_t durationUs = mLastDequeueDuration / 1000;
    867                 *value = durationUs > std::numeric_limits<int>::max() ?
    868                         std::numeric_limits<int>::max() :
    869                         static_cast<int>(durationUs);
    870                 return NO_ERROR;
    871             }
    872             case NATIVE_WINDOW_LAST_QUEUE_DURATION: {
    873                 int64_t durationUs = mLastQueueDuration / 1000;
    874                 *value = durationUs > std::numeric_limits<int>::max() ?
    875                         std::numeric_limits<int>::max() :
    876                         static_cast<int>(durationUs);
    877                 return NO_ERROR;
    878             }
    879             case NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT: {
    880                 querySupportedTimestampsLocked();
    881                 *value = mFrameTimestampsSupportsPresent ? 1 : 0;
    882                 return NO_ERROR;
    883             }
    884             case NATIVE_WINDOW_IS_VALID: {
    885                 *value = mGraphicBufferProducer != nullptr ? 1 : 0;
    886                 return NO_ERROR;
    887             }
    888             case NATIVE_WINDOW_DATASPACE: {
    889                 *value = static_cast<int>(mDataSpace);
    890                 return NO_ERROR;
    891             }
    892         }
    893     }
    894     return mGraphicBufferProducer->query(what, value);
    895 }
    896 
    897 int Surface::perform(int operation, va_list args)
    898 {
    899     int res = NO_ERROR;
    900     switch (operation) {
    901     case NATIVE_WINDOW_CONNECT:
    902         // deprecated. must return NO_ERROR.
    903         break;
    904     case NATIVE_WINDOW_DISCONNECT:
    905         // deprecated. must return NO_ERROR.
    906         break;
    907     case NATIVE_WINDOW_SET_USAGE:
    908         res = dispatchSetUsage(args);
    909         break;
    910     case NATIVE_WINDOW_SET_CROP:
    911         res = dispatchSetCrop(args);
    912         break;
    913     case NATIVE_WINDOW_SET_BUFFER_COUNT:
    914         res = dispatchSetBufferCount(args);
    915         break;
    916     case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
    917         res = dispatchSetBuffersGeometry(args);
    918         break;
    919     case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
    920         res = dispatchSetBuffersTransform(args);
    921         break;
    922     case NATIVE_WINDOW_SET_BUFFERS_STICKY_TRANSFORM:
    923         res = dispatchSetBuffersStickyTransform(args);
    924         break;
    925     case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
    926         res = dispatchSetBuffersTimestamp(args);
    927         break;
    928     case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
    929         res = dispatchSetBuffersDimensions(args);
    930         break;
    931     case NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS:
    932         res = dispatchSetBuffersUserDimensions(args);
    933         break;
    934     case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
    935         res = dispatchSetBuffersFormat(args);
    936         break;
    937     case NATIVE_WINDOW_LOCK:
    938         res = dispatchLock(args);
    939         break;
    940     case NATIVE_WINDOW_UNLOCK_AND_POST:
    941         res = dispatchUnlockAndPost(args);
    942         break;
    943     case NATIVE_WINDOW_SET_SCALING_MODE:
    944         res = dispatchSetScalingMode(args);
    945         break;
    946     case NATIVE_WINDOW_API_CONNECT:
    947         res = dispatchConnect(args);
    948         break;
    949     case NATIVE_WINDOW_API_DISCONNECT:
    950         res = dispatchDisconnect(args);
    951         break;
    952     case NATIVE_WINDOW_SET_SIDEBAND_STREAM:
    953         res = dispatchSetSidebandStream(args);
    954         break;
    955     case NATIVE_WINDOW_SET_BUFFERS_DATASPACE:
    956         res = dispatchSetBuffersDataSpace(args);
    957         break;
    958     case NATIVE_WINDOW_SET_BUFFERS_SMPTE2086_METADATA:
    959         res = dispatchSetBuffersSmpte2086Metadata(args);
    960         break;
    961     case NATIVE_WINDOW_SET_BUFFERS_CTA861_3_METADATA:
    962         res = dispatchSetBuffersCta8613Metadata(args);
    963         break;
    964     case NATIVE_WINDOW_SET_SURFACE_DAMAGE:
    965         res = dispatchSetSurfaceDamage(args);
    966         break;
    967     case NATIVE_WINDOW_SET_SHARED_BUFFER_MODE:
    968         res = dispatchSetSharedBufferMode(args);
    969         break;
    970     case NATIVE_WINDOW_SET_AUTO_REFRESH:
    971         res = dispatchSetAutoRefresh(args);
    972         break;
    973     case NATIVE_WINDOW_GET_REFRESH_CYCLE_DURATION:
    974         res = dispatchGetDisplayRefreshCycleDuration(args);
    975         break;
    976     case NATIVE_WINDOW_GET_NEXT_FRAME_ID:
    977         res = dispatchGetNextFrameId(args);
    978         break;
    979     case NATIVE_WINDOW_ENABLE_FRAME_TIMESTAMPS:
    980         res = dispatchEnableFrameTimestamps(args);
    981         break;
    982     case NATIVE_WINDOW_GET_COMPOSITOR_TIMING:
    983         res = dispatchGetCompositorTiming(args);
    984         break;
    985     case NATIVE_WINDOW_GET_FRAME_TIMESTAMPS:
    986         res = dispatchGetFrameTimestamps(args);
    987         break;
    988     case NATIVE_WINDOW_GET_WIDE_COLOR_SUPPORT:
    989         res = dispatchGetWideColorSupport(args);
    990         break;
    991     case NATIVE_WINDOW_GET_HDR_SUPPORT:
    992         res = dispatchGetHdrSupport(args);
    993         break;
    994     case NATIVE_WINDOW_SET_USAGE64:
    995         res = dispatchSetUsage64(args);
    996         break;
    997     case NATIVE_WINDOW_GET_CONSUMER_USAGE64:
    998         res = dispatchGetConsumerUsage64(args);
    999         break;
   1000     default:
   1001         res = NAME_NOT_FOUND;
   1002         break;
   1003     }
   1004     return res;
   1005 }
   1006 
   1007 int Surface::dispatchConnect(va_list args) {
   1008     int api = va_arg(args, int);
   1009     return connect(api);
   1010 }
   1011 
   1012 int Surface::dispatchDisconnect(va_list args) {
   1013     int api = va_arg(args, int);
   1014     return disconnect(api);
   1015 }
   1016 
   1017 int Surface::dispatchSetUsage(va_list args) {
   1018     uint64_t usage = va_arg(args, uint32_t);
   1019     return setUsage(usage);
   1020 }
   1021 
   1022 int Surface::dispatchSetUsage64(va_list args) {
   1023     uint64_t usage = va_arg(args, uint64_t);
   1024     return setUsage(usage);
   1025 }
   1026 
   1027 int Surface::dispatchSetCrop(va_list args) {
   1028     android_native_rect_t const* rect = va_arg(args, android_native_rect_t*);
   1029     return setCrop(reinterpret_cast<Rect const*>(rect));
   1030 }
   1031 
   1032 int Surface::dispatchSetBufferCount(va_list args) {
   1033     size_t bufferCount = va_arg(args, size_t);
   1034     return setBufferCount(static_cast<int32_t>(bufferCount));
   1035 }
   1036 
   1037 int Surface::dispatchSetBuffersGeometry(va_list args) {
   1038     uint32_t width = va_arg(args, uint32_t);
   1039     uint32_t height = va_arg(args, uint32_t);
   1040     PixelFormat format = va_arg(args, PixelFormat);
   1041     int err = setBuffersDimensions(width, height);
   1042     if (err != 0) {
   1043         return err;
   1044     }
   1045     return setBuffersFormat(format);
   1046 }
   1047 
   1048 int Surface::dispatchSetBuffersDimensions(va_list args) {
   1049     uint32_t width = va_arg(args, uint32_t);
   1050     uint32_t height = va_arg(args, uint32_t);
   1051     return setBuffersDimensions(width, height);
   1052 }
   1053 
   1054 int Surface::dispatchSetBuffersUserDimensions(va_list args) {
   1055     uint32_t width = va_arg(args, uint32_t);
   1056     uint32_t height = va_arg(args, uint32_t);
   1057     return setBuffersUserDimensions(width, height);
   1058 }
   1059 
   1060 int Surface::dispatchSetBuffersFormat(va_list args) {
   1061     PixelFormat format = va_arg(args, PixelFormat);
   1062     return setBuffersFormat(format);
   1063 }
   1064 
   1065 int Surface::dispatchSetScalingMode(va_list args) {
   1066     int mode = va_arg(args, int);
   1067     return setScalingMode(mode);
   1068 }
   1069 
   1070 int Surface::dispatchSetBuffersTransform(va_list args) {
   1071     uint32_t transform = va_arg(args, uint32_t);
   1072     return setBuffersTransform(transform);
   1073 }
   1074 
   1075 int Surface::dispatchSetBuffersStickyTransform(va_list args) {
   1076     uint32_t transform = va_arg(args, uint32_t);
   1077     return setBuffersStickyTransform(transform);
   1078 }
   1079 
   1080 int Surface::dispatchSetBuffersTimestamp(va_list args) {
   1081     int64_t timestamp = va_arg(args, int64_t);
   1082     return setBuffersTimestamp(timestamp);
   1083 }
   1084 
   1085 int Surface::dispatchLock(va_list args) {
   1086     ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
   1087     ARect* inOutDirtyBounds = va_arg(args, ARect*);
   1088     return lock(outBuffer, inOutDirtyBounds);
   1089 }
   1090 
   1091 int Surface::dispatchUnlockAndPost(va_list args __attribute__((unused))) {
   1092     return unlockAndPost();
   1093 }
   1094 
   1095 int Surface::dispatchSetSidebandStream(va_list args) {
   1096     native_handle_t* sH = va_arg(args, native_handle_t*);
   1097     sp<NativeHandle> sidebandHandle = NativeHandle::create(sH, false);
   1098     setSidebandStream(sidebandHandle);
   1099     return OK;
   1100 }
   1101 
   1102 int Surface::dispatchSetBuffersDataSpace(va_list args) {
   1103     Dataspace dataspace = static_cast<Dataspace>(va_arg(args, int));
   1104     return setBuffersDataSpace(dataspace);
   1105 }
   1106 
   1107 int Surface::dispatchSetBuffersSmpte2086Metadata(va_list args) {
   1108     const android_smpte2086_metadata* metadata =
   1109         va_arg(args, const android_smpte2086_metadata*);
   1110     return setBuffersSmpte2086Metadata(metadata);
   1111 }
   1112 
   1113 int Surface::dispatchSetBuffersCta8613Metadata(va_list args) {
   1114     const android_cta861_3_metadata* metadata =
   1115         va_arg(args, const android_cta861_3_metadata*);
   1116     return setBuffersCta8613Metadata(metadata);
   1117 }
   1118 
   1119 int Surface::dispatchSetSurfaceDamage(va_list args) {
   1120     android_native_rect_t* rects = va_arg(args, android_native_rect_t*);
   1121     size_t numRects = va_arg(args, size_t);
   1122     setSurfaceDamage(rects, numRects);
   1123     return NO_ERROR;
   1124 }
   1125 
   1126 int Surface::dispatchSetSharedBufferMode(va_list args) {
   1127     bool sharedBufferMode = va_arg(args, int);
   1128     return setSharedBufferMode(sharedBufferMode);
   1129 }
   1130 
   1131 int Surface::dispatchSetAutoRefresh(va_list args) {
   1132     bool autoRefresh = va_arg(args, int);
   1133     return setAutoRefresh(autoRefresh);
   1134 }
   1135 
   1136 int Surface::dispatchGetDisplayRefreshCycleDuration(va_list args) {
   1137     nsecs_t* outRefreshDuration = va_arg(args, int64_t*);
   1138     return getDisplayRefreshCycleDuration(outRefreshDuration);
   1139 }
   1140 
   1141 int Surface::dispatchGetNextFrameId(va_list args) {
   1142     uint64_t* nextFrameId = va_arg(args, uint64_t*);
   1143     *nextFrameId = getNextFrameNumber();
   1144     return NO_ERROR;
   1145 }
   1146 
   1147 int Surface::dispatchEnableFrameTimestamps(va_list args) {
   1148     bool enable = va_arg(args, int);
   1149     enableFrameTimestamps(enable);
   1150     return NO_ERROR;
   1151 }
   1152 
   1153 int Surface::dispatchGetCompositorTiming(va_list args) {
   1154     nsecs_t* compositeDeadline = va_arg(args, int64_t*);
   1155     nsecs_t* compositeInterval = va_arg(args, int64_t*);
   1156     nsecs_t* compositeToPresentLatency = va_arg(args, int64_t*);
   1157     return getCompositorTiming(compositeDeadline, compositeInterval,
   1158             compositeToPresentLatency);
   1159 }
   1160 
   1161 int Surface::dispatchGetFrameTimestamps(va_list args) {
   1162     uint64_t frameId = va_arg(args, uint64_t);
   1163     nsecs_t* outRequestedPresentTime = va_arg(args, int64_t*);
   1164     nsecs_t* outAcquireTime = va_arg(args, int64_t*);
   1165     nsecs_t* outLatchTime = va_arg(args, int64_t*);
   1166     nsecs_t* outFirstRefreshStartTime = va_arg(args, int64_t*);
   1167     nsecs_t* outLastRefreshStartTime = va_arg(args, int64_t*);
   1168     nsecs_t* outGpuCompositionDoneTime = va_arg(args, int64_t*);
   1169     nsecs_t* outDisplayPresentTime = va_arg(args, int64_t*);
   1170     nsecs_t* outDequeueReadyTime = va_arg(args, int64_t*);
   1171     nsecs_t* outReleaseTime = va_arg(args, int64_t*);
   1172     return getFrameTimestamps(frameId,
   1173             outRequestedPresentTime, outAcquireTime, outLatchTime,
   1174             outFirstRefreshStartTime, outLastRefreshStartTime,
   1175             outGpuCompositionDoneTime, outDisplayPresentTime,
   1176             outDequeueReadyTime, outReleaseTime);
   1177 }
   1178 
   1179 int Surface::dispatchGetWideColorSupport(va_list args) {
   1180     bool* outSupport = va_arg(args, bool*);
   1181     return getWideColorSupport(outSupport);
   1182 }
   1183 
   1184 int Surface::dispatchGetHdrSupport(va_list args) {
   1185     bool* outSupport = va_arg(args, bool*);
   1186     return getHdrSupport(outSupport);
   1187 }
   1188 
   1189 int Surface::dispatchGetConsumerUsage64(va_list args) {
   1190     uint64_t* usage = va_arg(args, uint64_t*);
   1191     return getConsumerUsage(usage);
   1192 }
   1193 
   1194 int Surface::connect(int api) {
   1195     static sp<IProducerListener> listener = new DummyProducerListener();
   1196     return connect(api, listener);
   1197 }
   1198 
   1199 int Surface::connect(int api, const sp<IProducerListener>& listener) {
   1200     return connect(api, listener, false);
   1201 }
   1202 
   1203 int Surface::connect(
   1204         int api, const sp<IProducerListener>& listener, bool reportBufferRemoval) {
   1205     ATRACE_CALL();
   1206     ALOGV("Surface::connect");
   1207     Mutex::Autolock lock(mMutex);
   1208     IGraphicBufferProducer::QueueBufferOutput output;
   1209     mReportRemovedBuffers = reportBufferRemoval;
   1210     int err = mGraphicBufferProducer->connect(listener, api, mProducerControlledByApp, &output);
   1211     if (err == NO_ERROR) {
   1212         mDefaultWidth = output.width;
   1213         mDefaultHeight = output.height;
   1214         mNextFrameNumber = output.nextFrameNumber;
   1215 
   1216         // Disable transform hint if sticky transform is set.
   1217         if (mStickyTransform == 0) {
   1218             mTransformHint = output.transformHint;
   1219         }
   1220 
   1221         mConsumerRunningBehind = (output.numPendingBuffers >= 2);
   1222     }
   1223     if (!err && api == NATIVE_WINDOW_API_CPU) {
   1224         mConnectedToCpu = true;
   1225         // Clear the dirty region in case we're switching from a non-CPU API
   1226         mDirtyRegion.clear();
   1227     } else if (!err) {
   1228         // Initialize the dirty region for tracking surface damage
   1229         mDirtyRegion = Region::INVALID_REGION;
   1230     }
   1231 
   1232     return err;
   1233 }
   1234 
   1235 
   1236 int Surface::disconnect(int api, IGraphicBufferProducer::DisconnectMode mode) {
   1237     ATRACE_CALL();
   1238     ALOGV("Surface::disconnect");
   1239     Mutex::Autolock lock(mMutex);
   1240     mRemovedBuffers.clear();
   1241     mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1242     mSharedBufferHasBeenQueued = false;
   1243     freeAllBuffers();
   1244     int err = mGraphicBufferProducer->disconnect(api, mode);
   1245     if (!err) {
   1246         mReqFormat = 0;
   1247         mReqWidth = 0;
   1248         mReqHeight = 0;
   1249         mReqUsage = 0;
   1250         mCrop.clear();
   1251         mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
   1252         mTransform = 0;
   1253         mStickyTransform = 0;
   1254 
   1255         if (api == NATIVE_WINDOW_API_CPU) {
   1256             mConnectedToCpu = false;
   1257         }
   1258     }
   1259     return err;
   1260 }
   1261 
   1262 int Surface::detachNextBuffer(sp<GraphicBuffer>* outBuffer,
   1263         sp<Fence>* outFence) {
   1264     ATRACE_CALL();
   1265     ALOGV("Surface::detachNextBuffer");
   1266 
   1267     if (outBuffer == NULL || outFence == NULL) {
   1268         return BAD_VALUE;
   1269     }
   1270 
   1271     Mutex::Autolock lock(mMutex);
   1272     if (mReportRemovedBuffers) {
   1273         mRemovedBuffers.clear();
   1274     }
   1275 
   1276     sp<GraphicBuffer> buffer(NULL);
   1277     sp<Fence> fence(NULL);
   1278     status_t result = mGraphicBufferProducer->detachNextBuffer(
   1279             &buffer, &fence);
   1280     if (result != NO_ERROR) {
   1281         return result;
   1282     }
   1283 
   1284     *outBuffer = buffer;
   1285     if (fence != NULL && fence->isValid()) {
   1286         *outFence = fence;
   1287     } else {
   1288         *outFence = Fence::NO_FENCE;
   1289     }
   1290 
   1291     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
   1292         if (mSlots[i].buffer != NULL &&
   1293                 mSlots[i].buffer->getId() == buffer->getId()) {
   1294             if (mReportRemovedBuffers) {
   1295                 mRemovedBuffers.push_back(mSlots[i].buffer);
   1296             }
   1297             mSlots[i].buffer = NULL;
   1298         }
   1299     }
   1300 
   1301     return NO_ERROR;
   1302 }
   1303 
   1304 int Surface::attachBuffer(ANativeWindowBuffer* buffer)
   1305 {
   1306     ATRACE_CALL();
   1307     ALOGV("Surface::attachBuffer");
   1308 
   1309     Mutex::Autolock lock(mMutex);
   1310     if (mReportRemovedBuffers) {
   1311         mRemovedBuffers.clear();
   1312     }
   1313 
   1314     sp<GraphicBuffer> graphicBuffer(static_cast<GraphicBuffer*>(buffer));
   1315     uint32_t priorGeneration = graphicBuffer->mGenerationNumber;
   1316     graphicBuffer->mGenerationNumber = mGenerationNumber;
   1317     int32_t attachedSlot = -1;
   1318     status_t result = mGraphicBufferProducer->attachBuffer(&attachedSlot, graphicBuffer);
   1319     if (result != NO_ERROR) {
   1320         ALOGE("attachBuffer: IGraphicBufferProducer call failed (%d)", result);
   1321         graphicBuffer->mGenerationNumber = priorGeneration;
   1322         return result;
   1323     }
   1324     if (mReportRemovedBuffers && (mSlots[attachedSlot].buffer != nullptr)) {
   1325         mRemovedBuffers.push_back(mSlots[attachedSlot].buffer);
   1326     }
   1327     mSlots[attachedSlot].buffer = graphicBuffer;
   1328 
   1329     return NO_ERROR;
   1330 }
   1331 
   1332 int Surface::setUsage(uint64_t reqUsage)
   1333 {
   1334     ALOGV("Surface::setUsage");
   1335     Mutex::Autolock lock(mMutex);
   1336     if (reqUsage != mReqUsage) {
   1337         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1338     }
   1339     mReqUsage = reqUsage;
   1340     return OK;
   1341 }
   1342 
   1343 int Surface::setCrop(Rect const* rect)
   1344 {
   1345     ATRACE_CALL();
   1346 
   1347     Rect realRect(Rect::EMPTY_RECT);
   1348     if (rect == NULL || rect->isEmpty()) {
   1349         realRect.clear();
   1350     } else {
   1351         realRect = *rect;
   1352     }
   1353 
   1354     ALOGV("Surface::setCrop rect=[%d %d %d %d]",
   1355             realRect.left, realRect.top, realRect.right, realRect.bottom);
   1356 
   1357     Mutex::Autolock lock(mMutex);
   1358     mCrop = realRect;
   1359     return NO_ERROR;
   1360 }
   1361 
   1362 int Surface::setBufferCount(int bufferCount)
   1363 {
   1364     ATRACE_CALL();
   1365     ALOGV("Surface::setBufferCount");
   1366     Mutex::Autolock lock(mMutex);
   1367 
   1368     status_t err = NO_ERROR;
   1369     if (bufferCount == 0) {
   1370         err = mGraphicBufferProducer->setMaxDequeuedBufferCount(1);
   1371     } else {
   1372         int minUndequeuedBuffers = 0;
   1373         err = mGraphicBufferProducer->query(
   1374                 NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBuffers);
   1375         if (err == NO_ERROR) {
   1376             err = mGraphicBufferProducer->setMaxDequeuedBufferCount(
   1377                     bufferCount - minUndequeuedBuffers);
   1378         }
   1379     }
   1380 
   1381     ALOGE_IF(err, "IGraphicBufferProducer::setBufferCount(%d) returned %s",
   1382              bufferCount, strerror(-err));
   1383 
   1384     return err;
   1385 }
   1386 
   1387 int Surface::setMaxDequeuedBufferCount(int maxDequeuedBuffers) {
   1388     ATRACE_CALL();
   1389     ALOGV("Surface::setMaxDequeuedBufferCount");
   1390     Mutex::Autolock lock(mMutex);
   1391 
   1392     status_t err = mGraphicBufferProducer->setMaxDequeuedBufferCount(
   1393             maxDequeuedBuffers);
   1394     ALOGE_IF(err, "IGraphicBufferProducer::setMaxDequeuedBufferCount(%d) "
   1395             "returned %s", maxDequeuedBuffers, strerror(-err));
   1396 
   1397     return err;
   1398 }
   1399 
   1400 int Surface::setAsyncMode(bool async) {
   1401     ATRACE_CALL();
   1402     ALOGV("Surface::setAsyncMode");
   1403     Mutex::Autolock lock(mMutex);
   1404 
   1405     status_t err = mGraphicBufferProducer->setAsyncMode(async);
   1406     ALOGE_IF(err, "IGraphicBufferProducer::setAsyncMode(%d) returned %s",
   1407             async, strerror(-err));
   1408 
   1409     return err;
   1410 }
   1411 
   1412 int Surface::setSharedBufferMode(bool sharedBufferMode) {
   1413     ATRACE_CALL();
   1414     ALOGV("Surface::setSharedBufferMode (%d)", sharedBufferMode);
   1415     Mutex::Autolock lock(mMutex);
   1416 
   1417     status_t err = mGraphicBufferProducer->setSharedBufferMode(
   1418             sharedBufferMode);
   1419     if (err == NO_ERROR) {
   1420         mSharedBufferMode = sharedBufferMode;
   1421     }
   1422     ALOGE_IF(err, "IGraphicBufferProducer::setSharedBufferMode(%d) returned"
   1423             "%s", sharedBufferMode, strerror(-err));
   1424 
   1425     return err;
   1426 }
   1427 
   1428 int Surface::setAutoRefresh(bool autoRefresh) {
   1429     ATRACE_CALL();
   1430     ALOGV("Surface::setAutoRefresh (%d)", autoRefresh);
   1431     Mutex::Autolock lock(mMutex);
   1432 
   1433     status_t err = mGraphicBufferProducer->setAutoRefresh(autoRefresh);
   1434     if (err == NO_ERROR) {
   1435         mAutoRefresh = autoRefresh;
   1436     }
   1437     ALOGE_IF(err, "IGraphicBufferProducer::setAutoRefresh(%d) returned %s",
   1438             autoRefresh, strerror(-err));
   1439     return err;
   1440 }
   1441 
   1442 int Surface::setBuffersDimensions(uint32_t width, uint32_t height)
   1443 {
   1444     ATRACE_CALL();
   1445     ALOGV("Surface::setBuffersDimensions");
   1446 
   1447     if ((width && !height) || (!width && height))
   1448         return BAD_VALUE;
   1449 
   1450     Mutex::Autolock lock(mMutex);
   1451     if (width != mReqWidth || height != mReqHeight) {
   1452         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1453     }
   1454     mReqWidth = width;
   1455     mReqHeight = height;
   1456     return NO_ERROR;
   1457 }
   1458 
   1459 int Surface::setBuffersUserDimensions(uint32_t width, uint32_t height)
   1460 {
   1461     ATRACE_CALL();
   1462     ALOGV("Surface::setBuffersUserDimensions");
   1463 
   1464     if ((width && !height) || (!width && height))
   1465         return BAD_VALUE;
   1466 
   1467     Mutex::Autolock lock(mMutex);
   1468     if (width != mUserWidth || height != mUserHeight) {
   1469         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1470     }
   1471     mUserWidth = width;
   1472     mUserHeight = height;
   1473     return NO_ERROR;
   1474 }
   1475 
   1476 int Surface::setBuffersFormat(PixelFormat format)
   1477 {
   1478     ALOGV("Surface::setBuffersFormat");
   1479 
   1480     Mutex::Autolock lock(mMutex);
   1481     if (format != mReqFormat) {
   1482         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1483     }
   1484     mReqFormat = format;
   1485     return NO_ERROR;
   1486 }
   1487 
   1488 int Surface::setScalingMode(int mode)
   1489 {
   1490     ATRACE_CALL();
   1491     ALOGV("Surface::setScalingMode(%d)", mode);
   1492 
   1493     switch (mode) {
   1494         case NATIVE_WINDOW_SCALING_MODE_FREEZE:
   1495         case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
   1496         case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
   1497         case NATIVE_WINDOW_SCALING_MODE_NO_SCALE_CROP:
   1498             break;
   1499         default:
   1500             ALOGE("unknown scaling mode: %d", mode);
   1501             return BAD_VALUE;
   1502     }
   1503 
   1504     Mutex::Autolock lock(mMutex);
   1505     mScalingMode = mode;
   1506     return NO_ERROR;
   1507 }
   1508 
   1509 int Surface::setBuffersTransform(uint32_t transform)
   1510 {
   1511     ATRACE_CALL();
   1512     ALOGV("Surface::setBuffersTransform");
   1513     Mutex::Autolock lock(mMutex);
   1514     mTransform = transform;
   1515     return NO_ERROR;
   1516 }
   1517 
   1518 int Surface::setBuffersStickyTransform(uint32_t transform)
   1519 {
   1520     ATRACE_CALL();
   1521     ALOGV("Surface::setBuffersStickyTransform");
   1522     Mutex::Autolock lock(mMutex);
   1523     mStickyTransform = transform;
   1524     return NO_ERROR;
   1525 }
   1526 
   1527 int Surface::setBuffersTimestamp(int64_t timestamp)
   1528 {
   1529     ALOGV("Surface::setBuffersTimestamp");
   1530     Mutex::Autolock lock(mMutex);
   1531     mTimestamp = timestamp;
   1532     return NO_ERROR;
   1533 }
   1534 
   1535 int Surface::setBuffersDataSpace(Dataspace dataSpace)
   1536 {
   1537     ALOGV("Surface::setBuffersDataSpace");
   1538     Mutex::Autolock lock(mMutex);
   1539     mDataSpace = dataSpace;
   1540     return NO_ERROR;
   1541 }
   1542 
   1543 int Surface::setBuffersSmpte2086Metadata(const android_smpte2086_metadata* metadata) {
   1544     ALOGV("Surface::setBuffersSmpte2086Metadata");
   1545     Mutex::Autolock lock(mMutex);
   1546     if (metadata) {
   1547         mHdrMetadata.smpte2086 = *metadata;
   1548         mHdrMetadata.validTypes |= HdrMetadata::SMPTE2086;
   1549     } else {
   1550         mHdrMetadata.validTypes &= ~HdrMetadata::SMPTE2086;
   1551     }
   1552     return NO_ERROR;
   1553 }
   1554 
   1555 int Surface::setBuffersCta8613Metadata(const android_cta861_3_metadata* metadata) {
   1556     ALOGV("Surface::setBuffersCta8613Metadata");
   1557     Mutex::Autolock lock(mMutex);
   1558     if (metadata) {
   1559         mHdrMetadata.cta8613 = *metadata;
   1560         mHdrMetadata.validTypes |= HdrMetadata::CTA861_3;
   1561     } else {
   1562         mHdrMetadata.validTypes &= ~HdrMetadata::CTA861_3;
   1563     }
   1564     return NO_ERROR;
   1565 }
   1566 
   1567 Dataspace Surface::getBuffersDataSpace() {
   1568     ALOGV("Surface::getBuffersDataSpace");
   1569     Mutex::Autolock lock(mMutex);
   1570     return mDataSpace;
   1571 }
   1572 
   1573 void Surface::freeAllBuffers() {
   1574     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
   1575         mSlots[i].buffer = 0;
   1576     }
   1577 }
   1578 
   1579 void Surface::setSurfaceDamage(android_native_rect_t* rects, size_t numRects) {
   1580     ATRACE_CALL();
   1581     ALOGV("Surface::setSurfaceDamage");
   1582     Mutex::Autolock lock(mMutex);
   1583 
   1584     if (mConnectedToCpu || numRects == 0) {
   1585         mDirtyRegion = Region::INVALID_REGION;
   1586         return;
   1587     }
   1588 
   1589     mDirtyRegion.clear();
   1590     for (size_t r = 0; r < numRects; ++r) {
   1591         // We intentionally flip top and bottom here, since because they're
   1592         // specified with a bottom-left origin, top > bottom, which fails
   1593         // validation in the Region class. We will fix this up when we flip to a
   1594         // top-left origin in queueBuffer.
   1595         Rect rect(rects[r].left, rects[r].bottom, rects[r].right, rects[r].top);
   1596         mDirtyRegion.orSelf(rect);
   1597     }
   1598 }
   1599 
   1600 // ----------------------------------------------------------------------
   1601 // the lock/unlock APIs must be used from the same thread
   1602 
   1603 static status_t copyBlt(
   1604         const sp<GraphicBuffer>& dst,
   1605         const sp<GraphicBuffer>& src,
   1606         const Region& reg,
   1607         int *dstFenceFd)
   1608 {
   1609     if (dst->getId() == src->getId())
   1610         return OK;
   1611 
   1612     // src and dst with, height and format must be identical. no verification
   1613     // is done here.
   1614     status_t err;
   1615     uint8_t* src_bits = NULL;
   1616     err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(),
   1617             reinterpret_cast<void**>(&src_bits));
   1618     ALOGE_IF(err, "error locking src buffer %s", strerror(-err));
   1619 
   1620     uint8_t* dst_bits = NULL;
   1621     err = dst->lockAsync(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(),
   1622             reinterpret_cast<void**>(&dst_bits), *dstFenceFd);
   1623     ALOGE_IF(err, "error locking dst buffer %s", strerror(-err));
   1624     *dstFenceFd = -1;
   1625 
   1626     Region::const_iterator head(reg.begin());
   1627     Region::const_iterator tail(reg.end());
   1628     if (head != tail && src_bits && dst_bits) {
   1629         const size_t bpp = bytesPerPixel(src->format);
   1630         const size_t dbpr = static_cast<uint32_t>(dst->stride) * bpp;
   1631         const size_t sbpr = static_cast<uint32_t>(src->stride) * bpp;
   1632 
   1633         while (head != tail) {
   1634             const Rect& r(*head++);
   1635             int32_t h = r.height();
   1636             if (h <= 0) continue;
   1637             size_t size = static_cast<uint32_t>(r.width()) * bpp;
   1638             uint8_t const * s = src_bits +
   1639                     static_cast<uint32_t>(r.left + src->stride * r.top) * bpp;
   1640             uint8_t       * d = dst_bits +
   1641                     static_cast<uint32_t>(r.left + dst->stride * r.top) * bpp;
   1642             if (dbpr==sbpr && size==sbpr) {
   1643                 size *= static_cast<size_t>(h);
   1644                 h = 1;
   1645             }
   1646             do {
   1647                 memcpy(d, s, size);
   1648                 d += dbpr;
   1649                 s += sbpr;
   1650             } while (--h > 0);
   1651         }
   1652     }
   1653 
   1654     if (src_bits)
   1655         src->unlock();
   1656 
   1657     if (dst_bits)
   1658         dst->unlockAsync(dstFenceFd);
   1659 
   1660     return err;
   1661 }
   1662 
   1663 // ----------------------------------------------------------------------------
   1664 
   1665 status_t Surface::lock(
   1666         ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
   1667 {
   1668     if (mLockedBuffer != 0) {
   1669         ALOGE("Surface::lock failed, already locked");
   1670         return INVALID_OPERATION;
   1671     }
   1672 
   1673     if (!mConnectedToCpu) {
   1674         int err = Surface::connect(NATIVE_WINDOW_API_CPU);
   1675         if (err) {
   1676             return err;
   1677         }
   1678         // we're intending to do software rendering from this point
   1679         setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
   1680     }
   1681 
   1682     ANativeWindowBuffer* out;
   1683     int fenceFd = -1;
   1684     status_t err = dequeueBuffer(&out, &fenceFd);
   1685     ALOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
   1686     if (err == NO_ERROR) {
   1687         sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
   1688         const Rect bounds(backBuffer->width, backBuffer->height);
   1689 
   1690         Region newDirtyRegion;
   1691         if (inOutDirtyBounds) {
   1692             newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
   1693             newDirtyRegion.andSelf(bounds);
   1694         } else {
   1695             newDirtyRegion.set(bounds);
   1696         }
   1697 
   1698         // figure out if we can copy the frontbuffer back
   1699         const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
   1700         const bool canCopyBack = (frontBuffer != 0 &&
   1701                 backBuffer->width  == frontBuffer->width &&
   1702                 backBuffer->height == frontBuffer->height &&
   1703                 backBuffer->format == frontBuffer->format);
   1704 
   1705         if (canCopyBack) {
   1706             // copy the area that is invalid and not repainted this round
   1707             const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
   1708             if (!copyback.isEmpty()) {
   1709                 copyBlt(backBuffer, frontBuffer, copyback, &fenceFd);
   1710             }
   1711         } else {
   1712             // if we can't copy-back anything, modify the user's dirty
   1713             // region to make sure they redraw the whole buffer
   1714             newDirtyRegion.set(bounds);
   1715             mDirtyRegion.clear();
   1716             Mutex::Autolock lock(mMutex);
   1717             for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
   1718                 mSlots[i].dirtyRegion.clear();
   1719             }
   1720         }
   1721 
   1722 
   1723         { // scope for the lock
   1724             Mutex::Autolock lock(mMutex);
   1725             int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
   1726             if (backBufferSlot >= 0) {
   1727                 Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
   1728                 mDirtyRegion.subtract(dirtyRegion);
   1729                 dirtyRegion = newDirtyRegion;
   1730             }
   1731         }
   1732 
   1733         mDirtyRegion.orSelf(newDirtyRegion);
   1734         if (inOutDirtyBounds) {
   1735             *inOutDirtyBounds = newDirtyRegion.getBounds();
   1736         }
   1737 
   1738         void* vaddr;
   1739         status_t res = backBuffer->lockAsync(
   1740                 GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
   1741                 newDirtyRegion.bounds(), &vaddr, fenceFd);
   1742 
   1743         ALOGW_IF(res, "failed locking buffer (handle = %p)",
   1744                 backBuffer->handle);
   1745 
   1746         if (res != 0) {
   1747             err = INVALID_OPERATION;
   1748         } else {
   1749             mLockedBuffer = backBuffer;
   1750             outBuffer->width  = backBuffer->width;
   1751             outBuffer->height = backBuffer->height;
   1752             outBuffer->stride = backBuffer->stride;
   1753             outBuffer->format = backBuffer->format;
   1754             outBuffer->bits   = vaddr;
   1755         }
   1756     }
   1757     return err;
   1758 }
   1759 
   1760 status_t Surface::unlockAndPost()
   1761 {
   1762     if (mLockedBuffer == 0) {
   1763         ALOGE("Surface::unlockAndPost failed, no locked buffer");
   1764         return INVALID_OPERATION;
   1765     }
   1766 
   1767     int fd = -1;
   1768     status_t err = mLockedBuffer->unlockAsync(&fd);
   1769     ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
   1770 
   1771     err = queueBuffer(mLockedBuffer.get(), fd);
   1772     ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
   1773             mLockedBuffer->handle, strerror(-err));
   1774 
   1775     mPostedBuffer = mLockedBuffer;
   1776     mLockedBuffer = 0;
   1777     return err;
   1778 }
   1779 
   1780 bool Surface::waitForNextFrame(uint64_t lastFrame, nsecs_t timeout) {
   1781     Mutex::Autolock lock(mMutex);
   1782     if (mNextFrameNumber > lastFrame) {
   1783       return true;
   1784     }
   1785     return mQueueBufferCondition.waitRelative(mMutex, timeout) == OK;
   1786 }
   1787 
   1788 status_t Surface::getUniqueId(uint64_t* outId) const {
   1789     Mutex::Autolock lock(mMutex);
   1790     return mGraphicBufferProducer->getUniqueId(outId);
   1791 }
   1792 
   1793 int Surface::getConsumerUsage(uint64_t* outUsage) const {
   1794     Mutex::Autolock lock(mMutex);
   1795     return mGraphicBufferProducer->getConsumerUsage(outUsage);
   1796 }
   1797 
   1798 nsecs_t Surface::getLastDequeueStartTime() const {
   1799     Mutex::Autolock lock(mMutex);
   1800     return mLastDequeueStartTime;
   1801 }
   1802 
   1803 status_t Surface::getAndFlushRemovedBuffers(std::vector<sp<GraphicBuffer>>* out) {
   1804     if (out == nullptr) {
   1805         ALOGE("%s: out must not be null!", __FUNCTION__);
   1806         return BAD_VALUE;
   1807     }
   1808 
   1809     Mutex::Autolock lock(mMutex);
   1810     *out = mRemovedBuffers;
   1811     mRemovedBuffers.clear();
   1812     return OK;
   1813 }
   1814 
   1815 status_t Surface::attachAndQueueBuffer(Surface* surface, sp<GraphicBuffer> buffer) {
   1816     if (buffer == nullptr) {
   1817         return BAD_VALUE;
   1818     }
   1819     int err = static_cast<ANativeWindow*>(surface)->perform(surface, NATIVE_WINDOW_API_CONNECT,
   1820                                                             NATIVE_WINDOW_API_CPU);
   1821     if (err != OK) {
   1822         return err;
   1823     }
   1824     err = surface->attachBuffer(buffer->getNativeBuffer());
   1825     if (err != OK) {
   1826         return err;
   1827     }
   1828     err = static_cast<ANativeWindow*>(surface)->queueBuffer(surface, buffer->getNativeBuffer(), -1);
   1829     if (err != OK) {
   1830         return err;
   1831     }
   1832     err = surface->disconnect(NATIVE_WINDOW_API_CPU);
   1833     return err;
   1834 }
   1835 
   1836 }; // namespace android
   1837