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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 <condition_variable>
     24 #include <deque>
     25 #include <mutex>
     26 #include <thread>
     27 
     28 #include <inttypes.h>
     29 
     30 #include <android/native_window.h>
     31 
     32 #include <utils/Log.h>
     33 #include <utils/Trace.h>
     34 #include <utils/NativeHandle.h>
     35 
     36 #include <ui/DisplayStatInfo.h>
     37 #include <ui/Fence.h>
     38 #include <ui/HdrCapabilities.h>
     39 #include <ui/Region.h>
     40 
     41 #include <gui/BufferItem.h>
     42 #include <gui/IProducerListener.h>
     43 
     44 #include <gui/ISurfaceComposer.h>
     45 #include <private/gui/ComposerService.h>
     46 
     47 namespace android {
     48 
     49 using ui::ColorMode;
     50 using ui::Dataspace;
     51 
     52 Surface::Surface(const sp<IGraphicBufferProducer>& bufferProducer, bool controlledByApp)
     53       : mGraphicBufferProducer(bufferProducer),
     54         mCrop(Rect::EMPTY_RECT),
     55         mBufferAge(0),
     56         mGenerationNumber(0),
     57         mSharedBufferMode(false),
     58         mAutoRefresh(false),
     59         mSharedBufferSlot(BufferItem::INVALID_BUFFER_SLOT),
     60         mSharedBufferHasBeenQueued(false),
     61         mQueriedSupportedTimestamps(false),
     62         mFrameTimestampsSupportsPresent(false),
     63         mEnableFrameTimestamps(false),
     64         mFrameEventHistory(std::make_unique<ProducerFrameEventHistory>()) {
     65     // Initialize the ANativeWindow function pointers.
     66     ANativeWindow::setSwapInterval  = hook_setSwapInterval;
     67     ANativeWindow::dequeueBuffer    = hook_dequeueBuffer;
     68     ANativeWindow::cancelBuffer     = hook_cancelBuffer;
     69     ANativeWindow::queueBuffer      = hook_queueBuffer;
     70     ANativeWindow::query            = hook_query;
     71     ANativeWindow::perform          = hook_perform;
     72 
     73     ANativeWindow::dequeueBuffer_DEPRECATED = hook_dequeueBuffer_DEPRECATED;
     74     ANativeWindow::cancelBuffer_DEPRECATED  = hook_cancelBuffer_DEPRECATED;
     75     ANativeWindow::lockBuffer_DEPRECATED    = hook_lockBuffer_DEPRECATED;
     76     ANativeWindow::queueBuffer_DEPRECATED   = hook_queueBuffer_DEPRECATED;
     77 
     78     const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
     79     const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
     80 
     81     mReqWidth = 0;
     82     mReqHeight = 0;
     83     mReqFormat = 0;
     84     mReqUsage = 0;
     85     mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
     86     mDataSpace = Dataspace::UNKNOWN;
     87     mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
     88     mTransform = 0;
     89     mStickyTransform = 0;
     90     mDefaultWidth = 0;
     91     mDefaultHeight = 0;
     92     mUserWidth = 0;
     93     mUserHeight = 0;
     94     mTransformHint = 0;
     95     mConsumerRunningBehind = false;
     96     mConnectedToCpu = false;
     97     mProducerControlledByApp = controlledByApp;
     98     mSwapIntervalZero = false;
     99 }
    100 
    101 Surface::~Surface() {
    102     if (mConnectedToCpu) {
    103         Surface::disconnect(NATIVE_WINDOW_API_CPU);
    104     }
    105 }
    106 
    107 sp<ISurfaceComposer> Surface::composerService() const {
    108     return ComposerService::getComposerService();
    109 }
    110 
    111 nsecs_t Surface::now() const {
    112     return systemTime();
    113 }
    114 
    115 sp<IGraphicBufferProducer> Surface::getIGraphicBufferProducer() const {
    116     return mGraphicBufferProducer;
    117 }
    118 
    119 void Surface::setSidebandStream(const sp<NativeHandle>& stream) {
    120     mGraphicBufferProducer->setSidebandStream(stream);
    121 }
    122 
    123 void Surface::allocateBuffers() {
    124     uint32_t reqWidth = mReqWidth ? mReqWidth : mUserWidth;
    125     uint32_t reqHeight = mReqHeight ? mReqHeight : mUserHeight;
    126     mGraphicBufferProducer->allocateBuffers(reqWidth, reqHeight,
    127             mReqFormat, mReqUsage);
    128 }
    129 
    130 status_t Surface::setGenerationNumber(uint32_t generation) {
    131     status_t result = mGraphicBufferProducer->setGenerationNumber(generation);
    132     if (result == NO_ERROR) {
    133         mGenerationNumber = generation;
    134     }
    135     return result;
    136 }
    137 
    138 uint64_t Surface::getNextFrameNumber() const {
    139     Mutex::Autolock lock(mMutex);
    140     return mNextFrameNumber;
    141 }
    142 
    143 String8 Surface::getConsumerName() const {
    144     return mGraphicBufferProducer->getConsumerName();
    145 }
    146 
    147 status_t Surface::setDequeueTimeout(nsecs_t timeout) {
    148     return mGraphicBufferProducer->setDequeueTimeout(timeout);
    149 }
    150 
    151 status_t Surface::getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
    152         sp<Fence>* outFence, float outTransformMatrix[16]) {
    153     return mGraphicBufferProducer->getLastQueuedBuffer(outBuffer, outFence,
    154             outTransformMatrix);
    155 }
    156 
    157 status_t Surface::getDisplayRefreshCycleDuration(nsecs_t* outRefreshDuration) {
    158     ATRACE_CALL();
    159 
    160     DisplayStatInfo stats;
    161     status_t result = composerService()->getDisplayStats(nullptr, &stats);
    162     if (result != NO_ERROR) {
    163         return result;
    164     }
    165 
    166     *outRefreshDuration = stats.vsyncPeriod;
    167 
    168     return NO_ERROR;
    169 }
    170 
    171 void Surface::enableFrameTimestamps(bool enable) {
    172     Mutex::Autolock lock(mMutex);
    173     // If going from disabled to enabled, get the initial values for
    174     // compositor and display timing.
    175     if (!mEnableFrameTimestamps && enable) {
    176         FrameEventHistoryDelta delta;
    177         mGraphicBufferProducer->getFrameTimestamps(&delta);
    178         mFrameEventHistory->applyDelta(delta);
    179     }
    180     mEnableFrameTimestamps = enable;
    181 }
    182 
    183 status_t Surface::getCompositorTiming(
    184         nsecs_t* compositeDeadline, nsecs_t* compositeInterval,
    185         nsecs_t* compositeToPresentLatency) {
    186     Mutex::Autolock lock(mMutex);
    187     if (!mEnableFrameTimestamps) {
    188         return INVALID_OPERATION;
    189     }
    190 
    191     if (compositeDeadline != nullptr) {
    192         *compositeDeadline =
    193                 mFrameEventHistory->getNextCompositeDeadline(now());
    194     }
    195     if (compositeInterval != nullptr) {
    196         *compositeInterval = mFrameEventHistory->getCompositeInterval();
    197     }
    198     if (compositeToPresentLatency != nullptr) {
    199         *compositeToPresentLatency =
    200                 mFrameEventHistory->getCompositeToPresentLatency();
    201     }
    202     return NO_ERROR;
    203 }
    204 
    205 static bool checkConsumerForUpdates(
    206         const FrameEvents* e, const uint64_t lastFrameNumber,
    207         const nsecs_t* outLatchTime,
    208         const nsecs_t* outFirstRefreshStartTime,
    209         const nsecs_t* outLastRefreshStartTime,
    210         const nsecs_t* outGpuCompositionDoneTime,
    211         const nsecs_t* outDisplayPresentTime,
    212         const nsecs_t* outDequeueReadyTime,
    213         const nsecs_t* outReleaseTime) {
    214     bool checkForLatch = (outLatchTime != nullptr) && !e->hasLatchInfo();
    215     bool checkForFirstRefreshStart = (outFirstRefreshStartTime != nullptr) &&
    216             !e->hasFirstRefreshStartInfo();
    217     bool checkForGpuCompositionDone = (outGpuCompositionDoneTime != nullptr) &&
    218             !e->hasGpuCompositionDoneInfo();
    219     bool checkForDisplayPresent = (outDisplayPresentTime != nullptr) &&
    220             !e->hasDisplayPresentInfo();
    221 
    222     // LastRefreshStart, DequeueReady, and Release are never available for the
    223     // last frame.
    224     bool checkForLastRefreshStart = (outLastRefreshStartTime != nullptr) &&
    225             !e->hasLastRefreshStartInfo() &&
    226             (e->frameNumber != lastFrameNumber);
    227     bool checkForDequeueReady = (outDequeueReadyTime != nullptr) &&
    228             !e->hasDequeueReadyInfo() && (e->frameNumber != lastFrameNumber);
    229     bool checkForRelease = (outReleaseTime != nullptr) &&
    230             !e->hasReleaseInfo() && (e->frameNumber != lastFrameNumber);
    231 
    232     // RequestedPresent and Acquire info are always available producer-side.
    233     return checkForLatch || checkForFirstRefreshStart ||
    234             checkForLastRefreshStart || checkForGpuCompositionDone ||
    235             checkForDisplayPresent || checkForDequeueReady || checkForRelease;
    236 }
    237 
    238 static void getFrameTimestamp(nsecs_t *dst, const nsecs_t& src) {
    239     if (dst != nullptr) {
    240         // We always get valid timestamps for these eventually.
    241         *dst = (src == FrameEvents::TIMESTAMP_PENDING) ?
    242                 NATIVE_WINDOW_TIMESTAMP_PENDING : src;
    243     }
    244 }
    245 
    246 static void getFrameTimestampFence(nsecs_t *dst,
    247         const std::shared_ptr<FenceTime>& src, bool fenceShouldBeKnown) {
    248     if (dst != nullptr) {
    249         if (!fenceShouldBeKnown) {
    250             *dst = NATIVE_WINDOW_TIMESTAMP_PENDING;
    251             return;
    252         }
    253 
    254         nsecs_t signalTime = src->getSignalTime();
    255         *dst = (signalTime == Fence::SIGNAL_TIME_PENDING) ?
    256                     NATIVE_WINDOW_TIMESTAMP_PENDING :
    257                 (signalTime == Fence::SIGNAL_TIME_INVALID) ?
    258                     NATIVE_WINDOW_TIMESTAMP_INVALID :
    259                 signalTime;
    260     }
    261 }
    262 
    263 status_t Surface::getFrameTimestamps(uint64_t frameNumber,
    264         nsecs_t* outRequestedPresentTime, nsecs_t* outAcquireTime,
    265         nsecs_t* outLatchTime, nsecs_t* outFirstRefreshStartTime,
    266         nsecs_t* outLastRefreshStartTime, nsecs_t* outGpuCompositionDoneTime,
    267         nsecs_t* outDisplayPresentTime, nsecs_t* outDequeueReadyTime,
    268         nsecs_t* outReleaseTime) {
    269     ATRACE_CALL();
    270 
    271     Mutex::Autolock lock(mMutex);
    272 
    273     if (!mEnableFrameTimestamps) {
    274         return INVALID_OPERATION;
    275     }
    276 
    277     // Verify the requested timestamps are supported.
    278     querySupportedTimestampsLocked();
    279     if (outDisplayPresentTime != nullptr && !mFrameTimestampsSupportsPresent) {
    280         return BAD_VALUE;
    281     }
    282 
    283     FrameEvents* events = mFrameEventHistory->getFrame(frameNumber);
    284     if (events == nullptr) {
    285         // If the entry isn't available in the producer, it's definitely not
    286         // available in the consumer.
    287         return NAME_NOT_FOUND;
    288     }
    289 
    290     // Update our cache of events if the requested events are not available.
    291     if (checkConsumerForUpdates(events, mLastFrameNumber,
    292             outLatchTime, outFirstRefreshStartTime, outLastRefreshStartTime,
    293             outGpuCompositionDoneTime, outDisplayPresentTime,
    294             outDequeueReadyTime, outReleaseTime)) {
    295         FrameEventHistoryDelta delta;
    296         mGraphicBufferProducer->getFrameTimestamps(&delta);
    297         mFrameEventHistory->applyDelta(delta);
    298         events = mFrameEventHistory->getFrame(frameNumber);
    299     }
    300 
    301     if (events == nullptr) {
    302         // The entry was available before the update, but was overwritten
    303         // after the update. Make sure not to send the wrong frame's data.
    304         return NAME_NOT_FOUND;
    305     }
    306 
    307     getFrameTimestamp(outRequestedPresentTime, events->requestedPresentTime);
    308     getFrameTimestamp(outLatchTime, events->latchTime);
    309     getFrameTimestamp(outFirstRefreshStartTime, events->firstRefreshStartTime);
    310     getFrameTimestamp(outLastRefreshStartTime, events->lastRefreshStartTime);
    311     getFrameTimestamp(outDequeueReadyTime, events->dequeueReadyTime);
    312 
    313     getFrameTimestampFence(outAcquireTime, events->acquireFence,
    314             events->hasAcquireInfo());
    315     getFrameTimestampFence(outGpuCompositionDoneTime,
    316             events->gpuCompositionDoneFence,
    317             events->hasGpuCompositionDoneInfo());
    318     getFrameTimestampFence(outDisplayPresentTime, events->displayPresentFence,
    319             events->hasDisplayPresentInfo());
    320     getFrameTimestampFence(outReleaseTime, events->releaseFence,
    321             events->hasReleaseInfo());
    322 
    323     return NO_ERROR;
    324 }
    325 
    326 status_t Surface::getWideColorSupport(bool* supported) {
    327     ATRACE_CALL();
    328 
    329     const sp<IBinder> display = composerService()->getInternalDisplayToken();
    330     if (display == nullptr) {
    331         return NAME_NOT_FOUND;
    332     }
    333 
    334     *supported = false;
    335     status_t error = composerService()->isWideColorDisplay(display, supported);
    336     return error;
    337 }
    338 
    339 status_t Surface::getHdrSupport(bool* supported) {
    340     ATRACE_CALL();
    341 
    342     const sp<IBinder> display = composerService()->getInternalDisplayToken();
    343     if (display == nullptr) {
    344         return NAME_NOT_FOUND;
    345     }
    346 
    347     HdrCapabilities hdrCapabilities;
    348     status_t err =
    349         composerService()->getHdrCapabilities(display, &hdrCapabilities);
    350 
    351     if (err)
    352         return err;
    353 
    354     *supported = !hdrCapabilities.getSupportedHdrTypes().empty();
    355 
    356     return NO_ERROR;
    357 }
    358 
    359 int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
    360     Surface* c = getSelf(window);
    361     return c->setSwapInterval(interval);
    362 }
    363 
    364 int Surface::hook_dequeueBuffer(ANativeWindow* window,
    365         ANativeWindowBuffer** buffer, int* fenceFd) {
    366     Surface* c = getSelf(window);
    367     return c->dequeueBuffer(buffer, fenceFd);
    368 }
    369 
    370 int Surface::hook_cancelBuffer(ANativeWindow* window,
    371         ANativeWindowBuffer* buffer, int fenceFd) {
    372     Surface* c = getSelf(window);
    373     return c->cancelBuffer(buffer, fenceFd);
    374 }
    375 
    376 int Surface::hook_queueBuffer(ANativeWindow* window,
    377         ANativeWindowBuffer* buffer, int fenceFd) {
    378     Surface* c = getSelf(window);
    379     return c->queueBuffer(buffer, fenceFd);
    380 }
    381 
    382 int Surface::hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
    383         ANativeWindowBuffer** buffer) {
    384     Surface* c = getSelf(window);
    385     ANativeWindowBuffer* buf;
    386     int fenceFd = -1;
    387     int result = c->dequeueBuffer(&buf, &fenceFd);
    388     if (result != OK) {
    389         return result;
    390     }
    391     sp<Fence> fence(new Fence(fenceFd));
    392     int waitResult = fence->waitForever("dequeueBuffer_DEPRECATED");
    393     if (waitResult != OK) {
    394         ALOGE("dequeueBuffer_DEPRECATED: Fence::wait returned an error: %d",
    395                 waitResult);
    396         c->cancelBuffer(buf, -1);
    397         return waitResult;
    398     }
    399     *buffer = buf;
    400     return result;
    401 }
    402 
    403 int Surface::hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
    404         ANativeWindowBuffer* buffer) {
    405     Surface* c = getSelf(window);
    406     return c->cancelBuffer(buffer, -1);
    407 }
    408 
    409 int Surface::hook_lockBuffer_DEPRECATED(ANativeWindow* window,
    410         ANativeWindowBuffer* buffer) {
    411     Surface* c = getSelf(window);
    412     return c->lockBuffer_DEPRECATED(buffer);
    413 }
    414 
    415 int Surface::hook_queueBuffer_DEPRECATED(ANativeWindow* window,
    416         ANativeWindowBuffer* buffer) {
    417     Surface* c = getSelf(window);
    418     return c->queueBuffer(buffer, -1);
    419 }
    420 
    421 int Surface::hook_query(const ANativeWindow* window,
    422                                 int what, int* value) {
    423     const Surface* c = getSelf(window);
    424     return c->query(what, value);
    425 }
    426 
    427 int Surface::hook_perform(ANativeWindow* window, int operation, ...) {
    428     va_list args;
    429     va_start(args, operation);
    430     Surface* c = getSelf(window);
    431     int result = c->perform(operation, args);
    432     va_end(args);
    433     return result;
    434 }
    435 
    436 int Surface::setSwapInterval(int interval) {
    437     ATRACE_CALL();
    438     // EGL specification states:
    439     //  interval is silently clamped to minimum and maximum implementation
    440     //  dependent values before being stored.
    441 
    442     if (interval < minSwapInterval)
    443         interval = minSwapInterval;
    444 
    445     if (interval > maxSwapInterval)
    446         interval = maxSwapInterval;
    447 
    448     const bool wasSwapIntervalZero = mSwapIntervalZero;
    449     mSwapIntervalZero = (interval == 0);
    450 
    451     if (mSwapIntervalZero != wasSwapIntervalZero) {
    452         mGraphicBufferProducer->setAsyncMode(mSwapIntervalZero);
    453     }
    454 
    455     return NO_ERROR;
    456 }
    457 
    458 class FenceMonitor {
    459 public:
    460     explicit FenceMonitor(const char* name) : mName(name), mFencesQueued(0), mFencesSignaled(0) {
    461         std::thread thread(&FenceMonitor::loop, this);
    462         pthread_setname_np(thread.native_handle(), mName);
    463         thread.detach();
    464     }
    465 
    466     void queueFence(const sp<Fence>& fence) {
    467         char message[64];
    468 
    469         std::lock_guard<std::mutex> lock(mMutex);
    470         if (fence->getSignalTime() != Fence::SIGNAL_TIME_PENDING) {
    471             snprintf(message, sizeof(message), "%s fence %u has signaled", mName, mFencesQueued);
    472             ATRACE_NAME(message);
    473             // Need an increment on both to make the trace number correct.
    474             mFencesQueued++;
    475             mFencesSignaled++;
    476             return;
    477         }
    478         snprintf(message, sizeof(message), "Trace %s fence %u", mName, mFencesQueued);
    479         ATRACE_NAME(message);
    480 
    481         mQueue.push_back(fence);
    482         mCondition.notify_one();
    483         mFencesQueued++;
    484         ATRACE_INT(mName, int32_t(mQueue.size()));
    485     }
    486 
    487 private:
    488 #pragma clang diagnostic push
    489 #pragma clang diagnostic ignored "-Wmissing-noreturn"
    490     void loop() {
    491         while (true) {
    492             threadLoop();
    493         }
    494     }
    495 #pragma clang diagnostic pop
    496 
    497     void threadLoop() {
    498         sp<Fence> fence;
    499         uint32_t fenceNum;
    500         {
    501             std::unique_lock<std::mutex> lock(mMutex);
    502             while (mQueue.empty()) {
    503                 mCondition.wait(lock);
    504             }
    505             fence = mQueue[0];
    506             fenceNum = mFencesSignaled;
    507         }
    508         {
    509             char message[64];
    510             snprintf(message, sizeof(message), "waiting for %s %u", mName, fenceNum);
    511             ATRACE_NAME(message);
    512 
    513             status_t result = fence->waitForever(message);
    514             if (result != OK) {
    515                 ALOGE("Error waiting for fence: %d", result);
    516             }
    517         }
    518         {
    519             std::lock_guard<std::mutex> lock(mMutex);
    520             mQueue.pop_front();
    521             mFencesSignaled++;
    522             ATRACE_INT(mName, int32_t(mQueue.size()));
    523         }
    524     }
    525 
    526     const char* mName;
    527     uint32_t mFencesQueued;
    528     uint32_t mFencesSignaled;
    529     std::deque<sp<Fence>> mQueue;
    530     std::condition_variable mCondition;
    531     std::mutex mMutex;
    532 };
    533 
    534 int Surface::dequeueBuffer(android_native_buffer_t** buffer, int* fenceFd) {
    535     ATRACE_CALL();
    536     ALOGV("Surface::dequeueBuffer");
    537 
    538     uint32_t reqWidth;
    539     uint32_t reqHeight;
    540     PixelFormat reqFormat;
    541     uint64_t reqUsage;
    542     bool enableFrameTimestamps;
    543 
    544     {
    545         Mutex::Autolock lock(mMutex);
    546         if (mReportRemovedBuffers) {
    547             mRemovedBuffers.clear();
    548         }
    549 
    550         reqWidth = mReqWidth ? mReqWidth : mUserWidth;
    551         reqHeight = mReqHeight ? mReqHeight : mUserHeight;
    552 
    553         reqFormat = mReqFormat;
    554         reqUsage = mReqUsage;
    555 
    556         enableFrameTimestamps = mEnableFrameTimestamps;
    557 
    558         if (mSharedBufferMode && mAutoRefresh && mSharedBufferSlot !=
    559                 BufferItem::INVALID_BUFFER_SLOT) {
    560             sp<GraphicBuffer>& gbuf(mSlots[mSharedBufferSlot].buffer);
    561             if (gbuf != nullptr) {
    562                 *buffer = gbuf.get();
    563                 *fenceFd = -1;
    564                 return OK;
    565             }
    566         }
    567     } // Drop the lock so that we can still touch the Surface while blocking in IGBP::dequeueBuffer
    568 
    569     int buf = -1;
    570     sp<Fence> fence;
    571     nsecs_t startTime = systemTime();
    572 
    573     FrameEventHistoryDelta frameTimestamps;
    574     status_t result = mGraphicBufferProducer->dequeueBuffer(&buf, &fence, reqWidth, reqHeight,
    575                                                             reqFormat, reqUsage, &mBufferAge,
    576                                                             enableFrameTimestamps ? &frameTimestamps
    577                                                                                   : nullptr);
    578     mLastDequeueDuration = systemTime() - startTime;
    579 
    580     if (result < 0) {
    581         ALOGV("dequeueBuffer: IGraphicBufferProducer::dequeueBuffer"
    582                 "(%d, %d, %d, %#" PRIx64 ") failed: %d",
    583                 reqWidth, reqHeight, reqFormat, reqUsage, result);
    584         return result;
    585     }
    586 
    587     if (buf < 0 || buf >= NUM_BUFFER_SLOTS) {
    588         ALOGE("dequeueBuffer: IGraphicBufferProducer returned invalid slot number %d", buf);
    589         android_errorWriteLog(0x534e4554, "36991414"); // SafetyNet logging
    590         return FAILED_TRANSACTION;
    591     }
    592 
    593     Mutex::Autolock lock(mMutex);
    594 
    595     // Write this while holding the mutex
    596     mLastDequeueStartTime = startTime;
    597 
    598     sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);
    599 
    600     // this should never happen
    601     ALOGE_IF(fence == nullptr, "Surface::dequeueBuffer: received null Fence! buf=%d", buf);
    602 
    603     if (CC_UNLIKELY(atrace_is_tag_enabled(ATRACE_TAG_GRAPHICS))) {
    604         static FenceMonitor hwcReleaseThread("HWC release");
    605         hwcReleaseThread.queueFence(fence);
    606     }
    607 
    608     if (result & IGraphicBufferProducer::RELEASE_ALL_BUFFERS) {
    609         freeAllBuffers();
    610     }
    611 
    612     if (enableFrameTimestamps) {
    613          mFrameEventHistory->applyDelta(frameTimestamps);
    614     }
    615 
    616     if ((result & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) || gbuf == nullptr) {
    617         if (mReportRemovedBuffers && (gbuf != nullptr)) {
    618             mRemovedBuffers.push_back(gbuf);
    619         }
    620         result = mGraphicBufferProducer->requestBuffer(buf, &gbuf);
    621         if (result != NO_ERROR) {
    622             ALOGE("dequeueBuffer: IGraphicBufferProducer::requestBuffer failed: %d", result);
    623             mGraphicBufferProducer->cancelBuffer(buf, fence);
    624             return result;
    625         }
    626     }
    627 
    628     if (fence->isValid()) {
    629         *fenceFd = fence->dup();
    630         if (*fenceFd == -1) {
    631             ALOGE("dequeueBuffer: error duping fence: %d", errno);
    632             // dup() should never fail; something is badly wrong. Soldier on
    633             // and hope for the best; the worst that should happen is some
    634             // visible corruption that lasts until the next frame.
    635         }
    636     } else {
    637         *fenceFd = -1;
    638     }
    639 
    640     *buffer = gbuf.get();
    641 
    642     if (mSharedBufferMode && mAutoRefresh) {
    643         mSharedBufferSlot = buf;
    644         mSharedBufferHasBeenQueued = false;
    645     } else if (mSharedBufferSlot == buf) {
    646         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
    647         mSharedBufferHasBeenQueued = false;
    648     }
    649 
    650     return OK;
    651 }
    652 
    653 int Surface::cancelBuffer(android_native_buffer_t* buffer,
    654         int fenceFd) {
    655     ATRACE_CALL();
    656     ALOGV("Surface::cancelBuffer");
    657     Mutex::Autolock lock(mMutex);
    658     int i = getSlotFromBufferLocked(buffer);
    659     if (i < 0) {
    660         if (fenceFd >= 0) {
    661             close(fenceFd);
    662         }
    663         return i;
    664     }
    665     if (mSharedBufferSlot == i && mSharedBufferHasBeenQueued) {
    666         if (fenceFd >= 0) {
    667             close(fenceFd);
    668         }
    669         return OK;
    670     }
    671     sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
    672     mGraphicBufferProducer->cancelBuffer(i, fence);
    673 
    674     if (mSharedBufferMode && mAutoRefresh && mSharedBufferSlot == i) {
    675         mSharedBufferHasBeenQueued = true;
    676     }
    677 
    678     return OK;
    679 }
    680 
    681 int Surface::getSlotFromBufferLocked(
    682         android_native_buffer_t* buffer) const {
    683     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
    684         if (mSlots[i].buffer != nullptr &&
    685                 mSlots[i].buffer->handle == buffer->handle) {
    686             return i;
    687         }
    688     }
    689     ALOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
    690     return BAD_VALUE;
    691 }
    692 
    693 int Surface::lockBuffer_DEPRECATED(android_native_buffer_t* buffer __attribute__((unused))) {
    694     ALOGV("Surface::lockBuffer");
    695     Mutex::Autolock lock(mMutex);
    696     return OK;
    697 }
    698 
    699 int Surface::queueBuffer(android_native_buffer_t* buffer, int fenceFd) {
    700     ATRACE_CALL();
    701     ALOGV("Surface::queueBuffer");
    702     Mutex::Autolock lock(mMutex);
    703     int64_t timestamp;
    704     bool isAutoTimestamp = false;
    705 
    706     if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
    707         timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
    708         isAutoTimestamp = true;
    709         ALOGV("Surface::queueBuffer making up timestamp: %.2f ms",
    710             timestamp / 1000000.0);
    711     } else {
    712         timestamp = mTimestamp;
    713     }
    714     int i = getSlotFromBufferLocked(buffer);
    715     if (i < 0) {
    716         if (fenceFd >= 0) {
    717             close(fenceFd);
    718         }
    719         return i;
    720     }
    721     if (mSharedBufferSlot == i && mSharedBufferHasBeenQueued) {
    722         if (fenceFd >= 0) {
    723             close(fenceFd);
    724         }
    725         return OK;
    726     }
    727 
    728 
    729     // Make sure the crop rectangle is entirely inside the buffer.
    730     Rect crop(Rect::EMPTY_RECT);
    731     mCrop.intersect(Rect(buffer->width, buffer->height), &crop);
    732 
    733     sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
    734     IGraphicBufferProducer::QueueBufferOutput output;
    735     IGraphicBufferProducer::QueueBufferInput input(timestamp, isAutoTimestamp,
    736             static_cast<android_dataspace>(mDataSpace), crop, mScalingMode,
    737             mTransform ^ mStickyTransform, fence, mStickyTransform,
    738             mEnableFrameTimestamps);
    739 
    740     // we should send HDR metadata as needed if this becomes a bottleneck
    741     input.setHdrMetadata(mHdrMetadata);
    742 
    743     if (mConnectedToCpu || mDirtyRegion.bounds() == Rect::INVALID_RECT) {
    744         input.setSurfaceDamage(Region::INVALID_REGION);
    745     } else {
    746         // Here we do two things:
    747         // 1) The surface damage was specified using the OpenGL ES convention of
    748         //    the origin being in the bottom-left corner. Here we flip to the
    749         //    convention that the rest of the system uses (top-left corner) by
    750         //    subtracting all top/bottom coordinates from the buffer height.
    751         // 2) If the buffer is coming in rotated (for example, because the EGL
    752         //    implementation is reacting to the transform hint coming back from
    753         //    SurfaceFlinger), the surface damage needs to be rotated the
    754         //    opposite direction, since it was generated assuming an unrotated
    755         //    buffer (the app doesn't know that the EGL implementation is
    756         //    reacting to the transform hint behind its back). The
    757         //    transformations in the switch statement below apply those
    758         //    complementary rotations (e.g., if 90 degrees, rotate 270 degrees).
    759 
    760         int width = buffer->width;
    761         int height = buffer->height;
    762         bool rotated90 = (mTransform ^ mStickyTransform) &
    763                 NATIVE_WINDOW_TRANSFORM_ROT_90;
    764         if (rotated90) {
    765             std::swap(width, height);
    766         }
    767 
    768         Region flippedRegion;
    769         for (auto rect : mDirtyRegion) {
    770             int left = rect.left;
    771             int right = rect.right;
    772             int top = height - rect.bottom; // Flip from OpenGL convention
    773             int bottom = height - rect.top; // Flip from OpenGL convention
    774             switch (mTransform ^ mStickyTransform) {
    775                 case NATIVE_WINDOW_TRANSFORM_ROT_90: {
    776                     // Rotate 270 degrees
    777                     Rect flippedRect{top, width - right, bottom, width - left};
    778                     flippedRegion.orSelf(flippedRect);
    779                     break;
    780                 }
    781                 case NATIVE_WINDOW_TRANSFORM_ROT_180: {
    782                     // Rotate 180 degrees
    783                     Rect flippedRect{width - right, height - bottom,
    784                             width - left, height - top};
    785                     flippedRegion.orSelf(flippedRect);
    786                     break;
    787                 }
    788                 case NATIVE_WINDOW_TRANSFORM_ROT_270: {
    789                     // Rotate 90 degrees
    790                     Rect flippedRect{height - bottom, left,
    791                             height - top, right};
    792                     flippedRegion.orSelf(flippedRect);
    793                     break;
    794                 }
    795                 default: {
    796                     Rect flippedRect{left, top, right, bottom};
    797                     flippedRegion.orSelf(flippedRect);
    798                     break;
    799                 }
    800             }
    801         }
    802 
    803         input.setSurfaceDamage(flippedRegion);
    804     }
    805 
    806     nsecs_t now = systemTime();
    807     status_t err = mGraphicBufferProducer->queueBuffer(i, input, &output);
    808     mLastQueueDuration = systemTime() - now;
    809     if (err != OK)  {
    810         ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
    811     }
    812 
    813     if (mEnableFrameTimestamps) {
    814         mFrameEventHistory->applyDelta(output.frameTimestamps);
    815         // Update timestamps with the local acquire fence.
    816         // The consumer doesn't send it back to prevent us from having two
    817         // file descriptors of the same fence.
    818         mFrameEventHistory->updateAcquireFence(mNextFrameNumber,
    819                 std::make_shared<FenceTime>(fence));
    820 
    821         // Cache timestamps of signaled fences so we can close their file
    822         // descriptors.
    823         mFrameEventHistory->updateSignalTimes();
    824     }
    825 
    826     mLastFrameNumber = mNextFrameNumber;
    827 
    828     mDefaultWidth = output.width;
    829     mDefaultHeight = output.height;
    830     mNextFrameNumber = output.nextFrameNumber;
    831 
    832     // Ignore transform hint if sticky transform is set or transform to display inverse flag is
    833     // set.
    834     if (mStickyTransform == 0 && !transformToDisplayInverse()) {
    835         mTransformHint = output.transformHint;
    836     }
    837 
    838     mConsumerRunningBehind = (output.numPendingBuffers >= 2);
    839 
    840     if (!mConnectedToCpu) {
    841         // Clear surface damage back to full-buffer
    842         mDirtyRegion = Region::INVALID_REGION;
    843     }
    844 
    845     if (mSharedBufferMode && mAutoRefresh && mSharedBufferSlot == i) {
    846         mSharedBufferHasBeenQueued = true;
    847     }
    848 
    849     mQueueBufferCondition.broadcast();
    850 
    851     if (CC_UNLIKELY(atrace_is_tag_enabled(ATRACE_TAG_GRAPHICS))) {
    852         static FenceMonitor gpuCompletionThread("GPU completion");
    853         gpuCompletionThread.queueFence(fence);
    854     }
    855 
    856     return err;
    857 }
    858 
    859 void Surface::querySupportedTimestampsLocked() const {
    860     // mMutex must be locked when calling this method.
    861 
    862     if (mQueriedSupportedTimestamps) {
    863         return;
    864     }
    865     mQueriedSupportedTimestamps = true;
    866 
    867     std::vector<FrameEvent> supportedFrameTimestamps;
    868     status_t err = composerService()->getSupportedFrameTimestamps(
    869             &supportedFrameTimestamps);
    870 
    871     if (err != NO_ERROR) {
    872         return;
    873     }
    874 
    875     for (auto sft : supportedFrameTimestamps) {
    876         if (sft == FrameEvent::DISPLAY_PRESENT) {
    877             mFrameTimestampsSupportsPresent = true;
    878         }
    879     }
    880 }
    881 
    882 int Surface::query(int what, int* value) const {
    883     ATRACE_CALL();
    884     ALOGV("Surface::query");
    885     { // scope for the lock
    886         Mutex::Autolock lock(mMutex);
    887         switch (what) {
    888             case NATIVE_WINDOW_FORMAT:
    889                 if (mReqFormat) {
    890                     *value = static_cast<int>(mReqFormat);
    891                     return NO_ERROR;
    892                 }
    893                 break;
    894             case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER: {
    895                 if (composerService()->authenticateSurfaceTexture(
    896                         mGraphicBufferProducer)) {
    897                     *value = 1;
    898                 } else {
    899                     *value = 0;
    900                 }
    901                 return NO_ERROR;
    902             }
    903             case NATIVE_WINDOW_CONCRETE_TYPE:
    904                 *value = NATIVE_WINDOW_SURFACE;
    905                 return NO_ERROR;
    906             case NATIVE_WINDOW_DEFAULT_WIDTH:
    907                 *value = static_cast<int>(
    908                         mUserWidth ? mUserWidth : mDefaultWidth);
    909                 return NO_ERROR;
    910             case NATIVE_WINDOW_DEFAULT_HEIGHT:
    911                 *value = static_cast<int>(
    912                         mUserHeight ? mUserHeight : mDefaultHeight);
    913                 return NO_ERROR;
    914             case NATIVE_WINDOW_TRANSFORM_HINT:
    915                 *value = static_cast<int>(mTransformHint);
    916                 return NO_ERROR;
    917             case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND: {
    918                 status_t err = NO_ERROR;
    919                 if (!mConsumerRunningBehind) {
    920                     *value = 0;
    921                 } else {
    922                     err = mGraphicBufferProducer->query(what, value);
    923                     if (err == NO_ERROR) {
    924                         mConsumerRunningBehind = *value;
    925                     }
    926                 }
    927                 return err;
    928             }
    929             case NATIVE_WINDOW_BUFFER_AGE: {
    930                 if (mBufferAge > INT32_MAX) {
    931                     *value = 0;
    932                 } else {
    933                     *value = static_cast<int32_t>(mBufferAge);
    934                 }
    935                 return NO_ERROR;
    936             }
    937             case NATIVE_WINDOW_LAST_DEQUEUE_DURATION: {
    938                 int64_t durationUs = mLastDequeueDuration / 1000;
    939                 *value = durationUs > std::numeric_limits<int>::max() ?
    940                         std::numeric_limits<int>::max() :
    941                         static_cast<int>(durationUs);
    942                 return NO_ERROR;
    943             }
    944             case NATIVE_WINDOW_LAST_QUEUE_DURATION: {
    945                 int64_t durationUs = mLastQueueDuration / 1000;
    946                 *value = durationUs > std::numeric_limits<int>::max() ?
    947                         std::numeric_limits<int>::max() :
    948                         static_cast<int>(durationUs);
    949                 return NO_ERROR;
    950             }
    951             case NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT: {
    952                 querySupportedTimestampsLocked();
    953                 *value = mFrameTimestampsSupportsPresent ? 1 : 0;
    954                 return NO_ERROR;
    955             }
    956             case NATIVE_WINDOW_IS_VALID: {
    957                 *value = mGraphicBufferProducer != nullptr ? 1 : 0;
    958                 return NO_ERROR;
    959             }
    960             case NATIVE_WINDOW_DATASPACE: {
    961                 *value = static_cast<int>(mDataSpace);
    962                 return NO_ERROR;
    963             }
    964         }
    965     }
    966     return mGraphicBufferProducer->query(what, value);
    967 }
    968 
    969 int Surface::perform(int operation, va_list args)
    970 {
    971     int res = NO_ERROR;
    972     switch (operation) {
    973     case NATIVE_WINDOW_CONNECT:
    974         // deprecated. must return NO_ERROR.
    975         break;
    976     case NATIVE_WINDOW_DISCONNECT:
    977         // deprecated. must return NO_ERROR.
    978         break;
    979     case NATIVE_WINDOW_SET_USAGE:
    980         res = dispatchSetUsage(args);
    981         break;
    982     case NATIVE_WINDOW_SET_CROP:
    983         res = dispatchSetCrop(args);
    984         break;
    985     case NATIVE_WINDOW_SET_BUFFER_COUNT:
    986         res = dispatchSetBufferCount(args);
    987         break;
    988     case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
    989         res = dispatchSetBuffersGeometry(args);
    990         break;
    991     case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
    992         res = dispatchSetBuffersTransform(args);
    993         break;
    994     case NATIVE_WINDOW_SET_BUFFERS_STICKY_TRANSFORM:
    995         res = dispatchSetBuffersStickyTransform(args);
    996         break;
    997     case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
    998         res = dispatchSetBuffersTimestamp(args);
    999         break;
   1000     case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
   1001         res = dispatchSetBuffersDimensions(args);
   1002         break;
   1003     case NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS:
   1004         res = dispatchSetBuffersUserDimensions(args);
   1005         break;
   1006     case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
   1007         res = dispatchSetBuffersFormat(args);
   1008         break;
   1009     case NATIVE_WINDOW_LOCK:
   1010         res = dispatchLock(args);
   1011         break;
   1012     case NATIVE_WINDOW_UNLOCK_AND_POST:
   1013         res = dispatchUnlockAndPost(args);
   1014         break;
   1015     case NATIVE_WINDOW_SET_SCALING_MODE:
   1016         res = dispatchSetScalingMode(args);
   1017         break;
   1018     case NATIVE_WINDOW_API_CONNECT:
   1019         res = dispatchConnect(args);
   1020         break;
   1021     case NATIVE_WINDOW_API_DISCONNECT:
   1022         res = dispatchDisconnect(args);
   1023         break;
   1024     case NATIVE_WINDOW_SET_SIDEBAND_STREAM:
   1025         res = dispatchSetSidebandStream(args);
   1026         break;
   1027     case NATIVE_WINDOW_SET_BUFFERS_DATASPACE:
   1028         res = dispatchSetBuffersDataSpace(args);
   1029         break;
   1030     case NATIVE_WINDOW_SET_BUFFERS_SMPTE2086_METADATA:
   1031         res = dispatchSetBuffersSmpte2086Metadata(args);
   1032         break;
   1033     case NATIVE_WINDOW_SET_BUFFERS_CTA861_3_METADATA:
   1034         res = dispatchSetBuffersCta8613Metadata(args);
   1035         break;
   1036     case NATIVE_WINDOW_SET_BUFFERS_HDR10_PLUS_METADATA:
   1037         res = dispatchSetBuffersHdr10PlusMetadata(args);
   1038         break;
   1039     case NATIVE_WINDOW_SET_SURFACE_DAMAGE:
   1040         res = dispatchSetSurfaceDamage(args);
   1041         break;
   1042     case NATIVE_WINDOW_SET_SHARED_BUFFER_MODE:
   1043         res = dispatchSetSharedBufferMode(args);
   1044         break;
   1045     case NATIVE_WINDOW_SET_AUTO_REFRESH:
   1046         res = dispatchSetAutoRefresh(args);
   1047         break;
   1048     case NATIVE_WINDOW_GET_REFRESH_CYCLE_DURATION:
   1049         res = dispatchGetDisplayRefreshCycleDuration(args);
   1050         break;
   1051     case NATIVE_WINDOW_GET_NEXT_FRAME_ID:
   1052         res = dispatchGetNextFrameId(args);
   1053         break;
   1054     case NATIVE_WINDOW_ENABLE_FRAME_TIMESTAMPS:
   1055         res = dispatchEnableFrameTimestamps(args);
   1056         break;
   1057     case NATIVE_WINDOW_GET_COMPOSITOR_TIMING:
   1058         res = dispatchGetCompositorTiming(args);
   1059         break;
   1060     case NATIVE_WINDOW_GET_FRAME_TIMESTAMPS:
   1061         res = dispatchGetFrameTimestamps(args);
   1062         break;
   1063     case NATIVE_WINDOW_GET_WIDE_COLOR_SUPPORT:
   1064         res = dispatchGetWideColorSupport(args);
   1065         break;
   1066     case NATIVE_WINDOW_GET_HDR_SUPPORT:
   1067         res = dispatchGetHdrSupport(args);
   1068         break;
   1069     case NATIVE_WINDOW_SET_USAGE64:
   1070         res = dispatchSetUsage64(args);
   1071         break;
   1072     case NATIVE_WINDOW_GET_CONSUMER_USAGE64:
   1073         res = dispatchGetConsumerUsage64(args);
   1074         break;
   1075     default:
   1076         res = NAME_NOT_FOUND;
   1077         break;
   1078     }
   1079     return res;
   1080 }
   1081 
   1082 int Surface::dispatchConnect(va_list args) {
   1083     int api = va_arg(args, int);
   1084     return connect(api);
   1085 }
   1086 
   1087 int Surface::dispatchDisconnect(va_list args) {
   1088     int api = va_arg(args, int);
   1089     return disconnect(api);
   1090 }
   1091 
   1092 int Surface::dispatchSetUsage(va_list args) {
   1093     uint64_t usage = va_arg(args, uint32_t);
   1094     return setUsage(usage);
   1095 }
   1096 
   1097 int Surface::dispatchSetUsage64(va_list args) {
   1098     uint64_t usage = va_arg(args, uint64_t);
   1099     return setUsage(usage);
   1100 }
   1101 
   1102 int Surface::dispatchSetCrop(va_list args) {
   1103     android_native_rect_t const* rect = va_arg(args, android_native_rect_t*);
   1104     return setCrop(reinterpret_cast<Rect const*>(rect));
   1105 }
   1106 
   1107 int Surface::dispatchSetBufferCount(va_list args) {
   1108     size_t bufferCount = va_arg(args, size_t);
   1109     return setBufferCount(static_cast<int32_t>(bufferCount));
   1110 }
   1111 
   1112 int Surface::dispatchSetBuffersGeometry(va_list args) {
   1113     uint32_t width = va_arg(args, uint32_t);
   1114     uint32_t height = va_arg(args, uint32_t);
   1115     PixelFormat format = va_arg(args, PixelFormat);
   1116     int err = setBuffersDimensions(width, height);
   1117     if (err != 0) {
   1118         return err;
   1119     }
   1120     return setBuffersFormat(format);
   1121 }
   1122 
   1123 int Surface::dispatchSetBuffersDimensions(va_list args) {
   1124     uint32_t width = va_arg(args, uint32_t);
   1125     uint32_t height = va_arg(args, uint32_t);
   1126     return setBuffersDimensions(width, height);
   1127 }
   1128 
   1129 int Surface::dispatchSetBuffersUserDimensions(va_list args) {
   1130     uint32_t width = va_arg(args, uint32_t);
   1131     uint32_t height = va_arg(args, uint32_t);
   1132     return setBuffersUserDimensions(width, height);
   1133 }
   1134 
   1135 int Surface::dispatchSetBuffersFormat(va_list args) {
   1136     PixelFormat format = va_arg(args, PixelFormat);
   1137     return setBuffersFormat(format);
   1138 }
   1139 
   1140 int Surface::dispatchSetScalingMode(va_list args) {
   1141     int mode = va_arg(args, int);
   1142     return setScalingMode(mode);
   1143 }
   1144 
   1145 int Surface::dispatchSetBuffersTransform(va_list args) {
   1146     uint32_t transform = va_arg(args, uint32_t);
   1147     return setBuffersTransform(transform);
   1148 }
   1149 
   1150 int Surface::dispatchSetBuffersStickyTransform(va_list args) {
   1151     uint32_t transform = va_arg(args, uint32_t);
   1152     return setBuffersStickyTransform(transform);
   1153 }
   1154 
   1155 int Surface::dispatchSetBuffersTimestamp(va_list args) {
   1156     int64_t timestamp = va_arg(args, int64_t);
   1157     return setBuffersTimestamp(timestamp);
   1158 }
   1159 
   1160 int Surface::dispatchLock(va_list args) {
   1161     ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
   1162     ARect* inOutDirtyBounds = va_arg(args, ARect*);
   1163     return lock(outBuffer, inOutDirtyBounds);
   1164 }
   1165 
   1166 int Surface::dispatchUnlockAndPost(va_list args __attribute__((unused))) {
   1167     return unlockAndPost();
   1168 }
   1169 
   1170 int Surface::dispatchSetSidebandStream(va_list args) {
   1171     native_handle_t* sH = va_arg(args, native_handle_t*);
   1172     sp<NativeHandle> sidebandHandle = NativeHandle::create(sH, false);
   1173     setSidebandStream(sidebandHandle);
   1174     return OK;
   1175 }
   1176 
   1177 int Surface::dispatchSetBuffersDataSpace(va_list args) {
   1178     Dataspace dataspace = static_cast<Dataspace>(va_arg(args, int));
   1179     return setBuffersDataSpace(dataspace);
   1180 }
   1181 
   1182 int Surface::dispatchSetBuffersSmpte2086Metadata(va_list args) {
   1183     const android_smpte2086_metadata* metadata =
   1184         va_arg(args, const android_smpte2086_metadata*);
   1185     return setBuffersSmpte2086Metadata(metadata);
   1186 }
   1187 
   1188 int Surface::dispatchSetBuffersCta8613Metadata(va_list args) {
   1189     const android_cta861_3_metadata* metadata =
   1190         va_arg(args, const android_cta861_3_metadata*);
   1191     return setBuffersCta8613Metadata(metadata);
   1192 }
   1193 
   1194 int Surface::dispatchSetBuffersHdr10PlusMetadata(va_list args) {
   1195     const size_t size = va_arg(args, size_t);
   1196     const uint8_t* metadata = va_arg(args, const uint8_t*);
   1197     return setBuffersHdr10PlusMetadata(size, metadata);
   1198 }
   1199 
   1200 int Surface::dispatchSetSurfaceDamage(va_list args) {
   1201     android_native_rect_t* rects = va_arg(args, android_native_rect_t*);
   1202     size_t numRects = va_arg(args, size_t);
   1203     setSurfaceDamage(rects, numRects);
   1204     return NO_ERROR;
   1205 }
   1206 
   1207 int Surface::dispatchSetSharedBufferMode(va_list args) {
   1208     bool sharedBufferMode = va_arg(args, int);
   1209     return setSharedBufferMode(sharedBufferMode);
   1210 }
   1211 
   1212 int Surface::dispatchSetAutoRefresh(va_list args) {
   1213     bool autoRefresh = va_arg(args, int);
   1214     return setAutoRefresh(autoRefresh);
   1215 }
   1216 
   1217 int Surface::dispatchGetDisplayRefreshCycleDuration(va_list args) {
   1218     nsecs_t* outRefreshDuration = va_arg(args, int64_t*);
   1219     return getDisplayRefreshCycleDuration(outRefreshDuration);
   1220 }
   1221 
   1222 int Surface::dispatchGetNextFrameId(va_list args) {
   1223     uint64_t* nextFrameId = va_arg(args, uint64_t*);
   1224     *nextFrameId = getNextFrameNumber();
   1225     return NO_ERROR;
   1226 }
   1227 
   1228 int Surface::dispatchEnableFrameTimestamps(va_list args) {
   1229     bool enable = va_arg(args, int);
   1230     enableFrameTimestamps(enable);
   1231     return NO_ERROR;
   1232 }
   1233 
   1234 int Surface::dispatchGetCompositorTiming(va_list args) {
   1235     nsecs_t* compositeDeadline = va_arg(args, int64_t*);
   1236     nsecs_t* compositeInterval = va_arg(args, int64_t*);
   1237     nsecs_t* compositeToPresentLatency = va_arg(args, int64_t*);
   1238     return getCompositorTiming(compositeDeadline, compositeInterval,
   1239             compositeToPresentLatency);
   1240 }
   1241 
   1242 int Surface::dispatchGetFrameTimestamps(va_list args) {
   1243     uint64_t frameId = va_arg(args, uint64_t);
   1244     nsecs_t* outRequestedPresentTime = va_arg(args, int64_t*);
   1245     nsecs_t* outAcquireTime = va_arg(args, int64_t*);
   1246     nsecs_t* outLatchTime = va_arg(args, int64_t*);
   1247     nsecs_t* outFirstRefreshStartTime = va_arg(args, int64_t*);
   1248     nsecs_t* outLastRefreshStartTime = va_arg(args, int64_t*);
   1249     nsecs_t* outGpuCompositionDoneTime = va_arg(args, int64_t*);
   1250     nsecs_t* outDisplayPresentTime = va_arg(args, int64_t*);
   1251     nsecs_t* outDequeueReadyTime = va_arg(args, int64_t*);
   1252     nsecs_t* outReleaseTime = va_arg(args, int64_t*);
   1253     return getFrameTimestamps(frameId,
   1254             outRequestedPresentTime, outAcquireTime, outLatchTime,
   1255             outFirstRefreshStartTime, outLastRefreshStartTime,
   1256             outGpuCompositionDoneTime, outDisplayPresentTime,
   1257             outDequeueReadyTime, outReleaseTime);
   1258 }
   1259 
   1260 int Surface::dispatchGetWideColorSupport(va_list args) {
   1261     bool* outSupport = va_arg(args, bool*);
   1262     return getWideColorSupport(outSupport);
   1263 }
   1264 
   1265 int Surface::dispatchGetHdrSupport(va_list args) {
   1266     bool* outSupport = va_arg(args, bool*);
   1267     return getHdrSupport(outSupport);
   1268 }
   1269 
   1270 int Surface::dispatchGetConsumerUsage64(va_list args) {
   1271     uint64_t* usage = va_arg(args, uint64_t*);
   1272     return getConsumerUsage(usage);
   1273 }
   1274 
   1275 bool Surface::transformToDisplayInverse() {
   1276     return (mTransform & NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY) ==
   1277             NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY;
   1278 }
   1279 
   1280 int Surface::connect(int api) {
   1281     static sp<IProducerListener> listener = new DummyProducerListener();
   1282     return connect(api, listener);
   1283 }
   1284 
   1285 int Surface::connect(int api, const sp<IProducerListener>& listener) {
   1286     return connect(api, listener, false);
   1287 }
   1288 
   1289 int Surface::connect(
   1290         int api, const sp<IProducerListener>& listener, bool reportBufferRemoval) {
   1291     ATRACE_CALL();
   1292     ALOGV("Surface::connect");
   1293     Mutex::Autolock lock(mMutex);
   1294     IGraphicBufferProducer::QueueBufferOutput output;
   1295     mReportRemovedBuffers = reportBufferRemoval;
   1296     int err = mGraphicBufferProducer->connect(listener, api, mProducerControlledByApp, &output);
   1297     if (err == NO_ERROR) {
   1298         mDefaultWidth = output.width;
   1299         mDefaultHeight = output.height;
   1300         mNextFrameNumber = output.nextFrameNumber;
   1301 
   1302         // Ignore transform hint if sticky transform is set or transform to display inverse flag is
   1303         // set. Transform hint should be ignored if the client is expected to always submit buffers
   1304         // in the same orientation.
   1305         if (mStickyTransform == 0 && !transformToDisplayInverse()) {
   1306             mTransformHint = output.transformHint;
   1307         }
   1308 
   1309         mConsumerRunningBehind = (output.numPendingBuffers >= 2);
   1310     }
   1311     if (!err && api == NATIVE_WINDOW_API_CPU) {
   1312         mConnectedToCpu = true;
   1313         // Clear the dirty region in case we're switching from a non-CPU API
   1314         mDirtyRegion.clear();
   1315     } else if (!err) {
   1316         // Initialize the dirty region for tracking surface damage
   1317         mDirtyRegion = Region::INVALID_REGION;
   1318     }
   1319 
   1320     return err;
   1321 }
   1322 
   1323 
   1324 int Surface::disconnect(int api, IGraphicBufferProducer::DisconnectMode mode) {
   1325     ATRACE_CALL();
   1326     ALOGV("Surface::disconnect");
   1327     Mutex::Autolock lock(mMutex);
   1328     mRemovedBuffers.clear();
   1329     mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1330     mSharedBufferHasBeenQueued = false;
   1331     freeAllBuffers();
   1332     int err = mGraphicBufferProducer->disconnect(api, mode);
   1333     if (!err) {
   1334         mReqFormat = 0;
   1335         mReqWidth = 0;
   1336         mReqHeight = 0;
   1337         mReqUsage = 0;
   1338         mCrop.clear();
   1339         mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
   1340         mTransform = 0;
   1341         mStickyTransform = 0;
   1342 
   1343         if (api == NATIVE_WINDOW_API_CPU) {
   1344             mConnectedToCpu = false;
   1345         }
   1346     }
   1347     return err;
   1348 }
   1349 
   1350 int Surface::detachNextBuffer(sp<GraphicBuffer>* outBuffer,
   1351         sp<Fence>* outFence) {
   1352     ATRACE_CALL();
   1353     ALOGV("Surface::detachNextBuffer");
   1354 
   1355     if (outBuffer == nullptr || outFence == nullptr) {
   1356         return BAD_VALUE;
   1357     }
   1358 
   1359     Mutex::Autolock lock(mMutex);
   1360     if (mReportRemovedBuffers) {
   1361         mRemovedBuffers.clear();
   1362     }
   1363 
   1364     sp<GraphicBuffer> buffer(nullptr);
   1365     sp<Fence> fence(nullptr);
   1366     status_t result = mGraphicBufferProducer->detachNextBuffer(
   1367             &buffer, &fence);
   1368     if (result != NO_ERROR) {
   1369         return result;
   1370     }
   1371 
   1372     *outBuffer = buffer;
   1373     if (fence != nullptr && fence->isValid()) {
   1374         *outFence = fence;
   1375     } else {
   1376         *outFence = Fence::NO_FENCE;
   1377     }
   1378 
   1379     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
   1380         if (mSlots[i].buffer != nullptr &&
   1381                 mSlots[i].buffer->getId() == buffer->getId()) {
   1382             if (mReportRemovedBuffers) {
   1383                 mRemovedBuffers.push_back(mSlots[i].buffer);
   1384             }
   1385             mSlots[i].buffer = nullptr;
   1386         }
   1387     }
   1388 
   1389     return NO_ERROR;
   1390 }
   1391 
   1392 int Surface::attachBuffer(ANativeWindowBuffer* buffer)
   1393 {
   1394     ATRACE_CALL();
   1395     ALOGV("Surface::attachBuffer");
   1396 
   1397     Mutex::Autolock lock(mMutex);
   1398     if (mReportRemovedBuffers) {
   1399         mRemovedBuffers.clear();
   1400     }
   1401 
   1402     sp<GraphicBuffer> graphicBuffer(static_cast<GraphicBuffer*>(buffer));
   1403     uint32_t priorGeneration = graphicBuffer->mGenerationNumber;
   1404     graphicBuffer->mGenerationNumber = mGenerationNumber;
   1405     int32_t attachedSlot = -1;
   1406     status_t result = mGraphicBufferProducer->attachBuffer(&attachedSlot, graphicBuffer);
   1407     if (result != NO_ERROR) {
   1408         ALOGE("attachBuffer: IGraphicBufferProducer call failed (%d)", result);
   1409         graphicBuffer->mGenerationNumber = priorGeneration;
   1410         return result;
   1411     }
   1412     if (mReportRemovedBuffers && (mSlots[attachedSlot].buffer != nullptr)) {
   1413         mRemovedBuffers.push_back(mSlots[attachedSlot].buffer);
   1414     }
   1415     mSlots[attachedSlot].buffer = graphicBuffer;
   1416 
   1417     return NO_ERROR;
   1418 }
   1419 
   1420 int Surface::setUsage(uint64_t reqUsage)
   1421 {
   1422     ALOGV("Surface::setUsage");
   1423     Mutex::Autolock lock(mMutex);
   1424     if (reqUsage != mReqUsage) {
   1425         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1426     }
   1427     mReqUsage = reqUsage;
   1428     return OK;
   1429 }
   1430 
   1431 int Surface::setCrop(Rect const* rect)
   1432 {
   1433     ATRACE_CALL();
   1434 
   1435     Rect realRect(Rect::EMPTY_RECT);
   1436     if (rect == nullptr || rect->isEmpty()) {
   1437         realRect.clear();
   1438     } else {
   1439         realRect = *rect;
   1440     }
   1441 
   1442     ALOGV("Surface::setCrop rect=[%d %d %d %d]",
   1443             realRect.left, realRect.top, realRect.right, realRect.bottom);
   1444 
   1445     Mutex::Autolock lock(mMutex);
   1446     mCrop = realRect;
   1447     return NO_ERROR;
   1448 }
   1449 
   1450 int Surface::setBufferCount(int bufferCount)
   1451 {
   1452     ATRACE_CALL();
   1453     ALOGV("Surface::setBufferCount");
   1454     Mutex::Autolock lock(mMutex);
   1455 
   1456     status_t err = NO_ERROR;
   1457     if (bufferCount == 0) {
   1458         err = mGraphicBufferProducer->setMaxDequeuedBufferCount(1);
   1459     } else {
   1460         int minUndequeuedBuffers = 0;
   1461         err = mGraphicBufferProducer->query(
   1462                 NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBuffers);
   1463         if (err == NO_ERROR) {
   1464             err = mGraphicBufferProducer->setMaxDequeuedBufferCount(
   1465                     bufferCount - minUndequeuedBuffers);
   1466         }
   1467     }
   1468 
   1469     ALOGE_IF(err, "IGraphicBufferProducer::setBufferCount(%d) returned %s",
   1470              bufferCount, strerror(-err));
   1471 
   1472     return err;
   1473 }
   1474 
   1475 int Surface::setMaxDequeuedBufferCount(int maxDequeuedBuffers) {
   1476     ATRACE_CALL();
   1477     ALOGV("Surface::setMaxDequeuedBufferCount");
   1478     Mutex::Autolock lock(mMutex);
   1479 
   1480     status_t err = mGraphicBufferProducer->setMaxDequeuedBufferCount(
   1481             maxDequeuedBuffers);
   1482     ALOGE_IF(err, "IGraphicBufferProducer::setMaxDequeuedBufferCount(%d) "
   1483             "returned %s", maxDequeuedBuffers, strerror(-err));
   1484 
   1485     return err;
   1486 }
   1487 
   1488 int Surface::setAsyncMode(bool async) {
   1489     ATRACE_CALL();
   1490     ALOGV("Surface::setAsyncMode");
   1491     Mutex::Autolock lock(mMutex);
   1492 
   1493     status_t err = mGraphicBufferProducer->setAsyncMode(async);
   1494     ALOGE_IF(err, "IGraphicBufferProducer::setAsyncMode(%d) returned %s",
   1495             async, strerror(-err));
   1496 
   1497     return err;
   1498 }
   1499 
   1500 int Surface::setSharedBufferMode(bool sharedBufferMode) {
   1501     ATRACE_CALL();
   1502     ALOGV("Surface::setSharedBufferMode (%d)", sharedBufferMode);
   1503     Mutex::Autolock lock(mMutex);
   1504 
   1505     status_t err = mGraphicBufferProducer->setSharedBufferMode(
   1506             sharedBufferMode);
   1507     if (err == NO_ERROR) {
   1508         mSharedBufferMode = sharedBufferMode;
   1509     }
   1510     ALOGE_IF(err, "IGraphicBufferProducer::setSharedBufferMode(%d) returned"
   1511             "%s", sharedBufferMode, strerror(-err));
   1512 
   1513     return err;
   1514 }
   1515 
   1516 int Surface::setAutoRefresh(bool autoRefresh) {
   1517     ATRACE_CALL();
   1518     ALOGV("Surface::setAutoRefresh (%d)", autoRefresh);
   1519     Mutex::Autolock lock(mMutex);
   1520 
   1521     status_t err = mGraphicBufferProducer->setAutoRefresh(autoRefresh);
   1522     if (err == NO_ERROR) {
   1523         mAutoRefresh = autoRefresh;
   1524     }
   1525     ALOGE_IF(err, "IGraphicBufferProducer::setAutoRefresh(%d) returned %s",
   1526             autoRefresh, strerror(-err));
   1527     return err;
   1528 }
   1529 
   1530 int Surface::setBuffersDimensions(uint32_t width, uint32_t height)
   1531 {
   1532     ATRACE_CALL();
   1533     ALOGV("Surface::setBuffersDimensions");
   1534 
   1535     if ((width && !height) || (!width && height))
   1536         return BAD_VALUE;
   1537 
   1538     Mutex::Autolock lock(mMutex);
   1539     if (width != mReqWidth || height != mReqHeight) {
   1540         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1541     }
   1542     mReqWidth = width;
   1543     mReqHeight = height;
   1544     return NO_ERROR;
   1545 }
   1546 
   1547 int Surface::setBuffersUserDimensions(uint32_t width, uint32_t height)
   1548 {
   1549     ATRACE_CALL();
   1550     ALOGV("Surface::setBuffersUserDimensions");
   1551 
   1552     if ((width && !height) || (!width && height))
   1553         return BAD_VALUE;
   1554 
   1555     Mutex::Autolock lock(mMutex);
   1556     if (width != mUserWidth || height != mUserHeight) {
   1557         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1558     }
   1559     mUserWidth = width;
   1560     mUserHeight = height;
   1561     return NO_ERROR;
   1562 }
   1563 
   1564 int Surface::setBuffersFormat(PixelFormat format)
   1565 {
   1566     ALOGV("Surface::setBuffersFormat");
   1567 
   1568     Mutex::Autolock lock(mMutex);
   1569     if (format != mReqFormat) {
   1570         mSharedBufferSlot = BufferItem::INVALID_BUFFER_SLOT;
   1571     }
   1572     mReqFormat = format;
   1573     return NO_ERROR;
   1574 }
   1575 
   1576 int Surface::setScalingMode(int mode)
   1577 {
   1578     ATRACE_CALL();
   1579     ALOGV("Surface::setScalingMode(%d)", mode);
   1580 
   1581     switch (mode) {
   1582         case NATIVE_WINDOW_SCALING_MODE_FREEZE:
   1583         case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
   1584         case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
   1585         case NATIVE_WINDOW_SCALING_MODE_NO_SCALE_CROP:
   1586             break;
   1587         default:
   1588             ALOGE("unknown scaling mode: %d", mode);
   1589             return BAD_VALUE;
   1590     }
   1591 
   1592     Mutex::Autolock lock(mMutex);
   1593     mScalingMode = mode;
   1594     return NO_ERROR;
   1595 }
   1596 
   1597 int Surface::setBuffersTransform(uint32_t transform)
   1598 {
   1599     ATRACE_CALL();
   1600     ALOGV("Surface::setBuffersTransform");
   1601     Mutex::Autolock lock(mMutex);
   1602     // Ensure NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY is sticky. If the client sets the flag, do not
   1603     // override it until the surface is disconnected. This is a temporary workaround for camera
   1604     // until they switch to using Buffer State Layers. Currently if client sets the buffer transform
   1605     // it may be overriden by the buffer producer when the producer sets the buffer transform.
   1606     if (transformToDisplayInverse()) {
   1607         transform |= NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY;
   1608     }
   1609     mTransform = transform;
   1610     return NO_ERROR;
   1611 }
   1612 
   1613 int Surface::setBuffersStickyTransform(uint32_t transform)
   1614 {
   1615     ATRACE_CALL();
   1616     ALOGV("Surface::setBuffersStickyTransform");
   1617     Mutex::Autolock lock(mMutex);
   1618     mStickyTransform = transform;
   1619     return NO_ERROR;
   1620 }
   1621 
   1622 int Surface::setBuffersTimestamp(int64_t timestamp)
   1623 {
   1624     ALOGV("Surface::setBuffersTimestamp");
   1625     Mutex::Autolock lock(mMutex);
   1626     mTimestamp = timestamp;
   1627     return NO_ERROR;
   1628 }
   1629 
   1630 int Surface::setBuffersDataSpace(Dataspace dataSpace)
   1631 {
   1632     ALOGV("Surface::setBuffersDataSpace");
   1633     Mutex::Autolock lock(mMutex);
   1634     mDataSpace = dataSpace;
   1635     return NO_ERROR;
   1636 }
   1637 
   1638 int Surface::setBuffersSmpte2086Metadata(const android_smpte2086_metadata* metadata) {
   1639     ALOGV("Surface::setBuffersSmpte2086Metadata");
   1640     Mutex::Autolock lock(mMutex);
   1641     if (metadata) {
   1642         mHdrMetadata.smpte2086 = *metadata;
   1643         mHdrMetadata.validTypes |= HdrMetadata::SMPTE2086;
   1644     } else {
   1645         mHdrMetadata.validTypes &= ~HdrMetadata::SMPTE2086;
   1646     }
   1647     return NO_ERROR;
   1648 }
   1649 
   1650 int Surface::setBuffersCta8613Metadata(const android_cta861_3_metadata* metadata) {
   1651     ALOGV("Surface::setBuffersCta8613Metadata");
   1652     Mutex::Autolock lock(mMutex);
   1653     if (metadata) {
   1654         mHdrMetadata.cta8613 = *metadata;
   1655         mHdrMetadata.validTypes |= HdrMetadata::CTA861_3;
   1656     } else {
   1657         mHdrMetadata.validTypes &= ~HdrMetadata::CTA861_3;
   1658     }
   1659     return NO_ERROR;
   1660 }
   1661 
   1662 int Surface::setBuffersHdr10PlusMetadata(const size_t size, const uint8_t* metadata) {
   1663     ALOGV("Surface::setBuffersBlobMetadata");
   1664     Mutex::Autolock lock(mMutex);
   1665     if (size > 0) {
   1666         mHdrMetadata.hdr10plus.assign(metadata, metadata + size);
   1667         mHdrMetadata.validTypes |= HdrMetadata::HDR10PLUS;
   1668     } else {
   1669         mHdrMetadata.validTypes &= ~HdrMetadata::HDR10PLUS;
   1670         mHdrMetadata.hdr10plus.clear();
   1671     }
   1672     return NO_ERROR;
   1673 }
   1674 
   1675 Dataspace Surface::getBuffersDataSpace() {
   1676     ALOGV("Surface::getBuffersDataSpace");
   1677     Mutex::Autolock lock(mMutex);
   1678     return mDataSpace;
   1679 }
   1680 
   1681 void Surface::freeAllBuffers() {
   1682     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
   1683         mSlots[i].buffer = nullptr;
   1684     }
   1685 }
   1686 
   1687 void Surface::setSurfaceDamage(android_native_rect_t* rects, size_t numRects) {
   1688     ATRACE_CALL();
   1689     ALOGV("Surface::setSurfaceDamage");
   1690     Mutex::Autolock lock(mMutex);
   1691 
   1692     if (mConnectedToCpu || numRects == 0) {
   1693         mDirtyRegion = Region::INVALID_REGION;
   1694         return;
   1695     }
   1696 
   1697     mDirtyRegion.clear();
   1698     for (size_t r = 0; r < numRects; ++r) {
   1699         // We intentionally flip top and bottom here, since because they're
   1700         // specified with a bottom-left origin, top > bottom, which fails
   1701         // validation in the Region class. We will fix this up when we flip to a
   1702         // top-left origin in queueBuffer.
   1703         Rect rect(rects[r].left, rects[r].bottom, rects[r].right, rects[r].top);
   1704         mDirtyRegion.orSelf(rect);
   1705     }
   1706 }
   1707 
   1708 // ----------------------------------------------------------------------
   1709 // the lock/unlock APIs must be used from the same thread
   1710 
   1711 static status_t copyBlt(
   1712         const sp<GraphicBuffer>& dst,
   1713         const sp<GraphicBuffer>& src,
   1714         const Region& reg,
   1715         int *dstFenceFd)
   1716 {
   1717     if (dst->getId() == src->getId())
   1718         return OK;
   1719 
   1720     // src and dst with, height and format must be identical. no verification
   1721     // is done here.
   1722     status_t err;
   1723     uint8_t* src_bits = nullptr;
   1724     err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(),
   1725             reinterpret_cast<void**>(&src_bits));
   1726     ALOGE_IF(err, "error locking src buffer %s", strerror(-err));
   1727 
   1728     uint8_t* dst_bits = nullptr;
   1729     err = dst->lockAsync(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(),
   1730             reinterpret_cast<void**>(&dst_bits), *dstFenceFd);
   1731     ALOGE_IF(err, "error locking dst buffer %s", strerror(-err));
   1732     *dstFenceFd = -1;
   1733 
   1734     Region::const_iterator head(reg.begin());
   1735     Region::const_iterator tail(reg.end());
   1736     if (head != tail && src_bits && dst_bits) {
   1737         const size_t bpp = bytesPerPixel(src->format);
   1738         const size_t dbpr = static_cast<uint32_t>(dst->stride) * bpp;
   1739         const size_t sbpr = static_cast<uint32_t>(src->stride) * bpp;
   1740 
   1741         while (head != tail) {
   1742             const Rect& r(*head++);
   1743             int32_t h = r.height();
   1744             if (h <= 0) continue;
   1745             size_t size = static_cast<uint32_t>(r.width()) * bpp;
   1746             uint8_t const * s = src_bits +
   1747                     static_cast<uint32_t>(r.left + src->stride * r.top) * bpp;
   1748             uint8_t       * d = dst_bits +
   1749                     static_cast<uint32_t>(r.left + dst->stride * r.top) * bpp;
   1750             if (dbpr==sbpr && size==sbpr) {
   1751                 size *= static_cast<size_t>(h);
   1752                 h = 1;
   1753             }
   1754             do {
   1755                 memcpy(d, s, size);
   1756                 d += dbpr;
   1757                 s += sbpr;
   1758             } while (--h > 0);
   1759         }
   1760     }
   1761 
   1762     if (src_bits)
   1763         src->unlock();
   1764 
   1765     if (dst_bits)
   1766         dst->unlockAsync(dstFenceFd);
   1767 
   1768     return err;
   1769 }
   1770 
   1771 // ----------------------------------------------------------------------------
   1772 
   1773 status_t Surface::lock(
   1774         ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
   1775 {
   1776     if (mLockedBuffer != nullptr) {
   1777         ALOGE("Surface::lock failed, already locked");
   1778         return INVALID_OPERATION;
   1779     }
   1780 
   1781     if (!mConnectedToCpu) {
   1782         int err = Surface::connect(NATIVE_WINDOW_API_CPU);
   1783         if (err) {
   1784             return err;
   1785         }
   1786         // we're intending to do software rendering from this point
   1787         setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
   1788     }
   1789 
   1790     ANativeWindowBuffer* out;
   1791     int fenceFd = -1;
   1792     status_t err = dequeueBuffer(&out, &fenceFd);
   1793     ALOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
   1794     if (err == NO_ERROR) {
   1795         sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
   1796         const Rect bounds(backBuffer->width, backBuffer->height);
   1797 
   1798         Region newDirtyRegion;
   1799         if (inOutDirtyBounds) {
   1800             newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
   1801             newDirtyRegion.andSelf(bounds);
   1802         } else {
   1803             newDirtyRegion.set(bounds);
   1804         }
   1805 
   1806         // figure out if we can copy the frontbuffer back
   1807         const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
   1808         const bool canCopyBack = (frontBuffer != nullptr &&
   1809                 backBuffer->width  == frontBuffer->width &&
   1810                 backBuffer->height == frontBuffer->height &&
   1811                 backBuffer->format == frontBuffer->format);
   1812 
   1813         if (canCopyBack) {
   1814             // copy the area that is invalid and not repainted this round
   1815             const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
   1816             if (!copyback.isEmpty()) {
   1817                 copyBlt(backBuffer, frontBuffer, copyback, &fenceFd);
   1818             }
   1819         } else {
   1820             // if we can't copy-back anything, modify the user's dirty
   1821             // region to make sure they redraw the whole buffer
   1822             newDirtyRegion.set(bounds);
   1823             mDirtyRegion.clear();
   1824             Mutex::Autolock lock(mMutex);
   1825             for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
   1826                 mSlots[i].dirtyRegion.clear();
   1827             }
   1828         }
   1829 
   1830 
   1831         { // scope for the lock
   1832             Mutex::Autolock lock(mMutex);
   1833             int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
   1834             if (backBufferSlot >= 0) {
   1835                 Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
   1836                 mDirtyRegion.subtract(dirtyRegion);
   1837                 dirtyRegion = newDirtyRegion;
   1838             }
   1839         }
   1840 
   1841         mDirtyRegion.orSelf(newDirtyRegion);
   1842         if (inOutDirtyBounds) {
   1843             *inOutDirtyBounds = newDirtyRegion.getBounds();
   1844         }
   1845 
   1846         void* vaddr;
   1847         status_t res = backBuffer->lockAsync(
   1848                 GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
   1849                 newDirtyRegion.bounds(), &vaddr, fenceFd);
   1850 
   1851         ALOGW_IF(res, "failed locking buffer (handle = %p)",
   1852                 backBuffer->handle);
   1853 
   1854         if (res != 0) {
   1855             err = INVALID_OPERATION;
   1856         } else {
   1857             mLockedBuffer = backBuffer;
   1858             outBuffer->width  = backBuffer->width;
   1859             outBuffer->height = backBuffer->height;
   1860             outBuffer->stride = backBuffer->stride;
   1861             outBuffer->format = backBuffer->format;
   1862             outBuffer->bits   = vaddr;
   1863         }
   1864     }
   1865     return err;
   1866 }
   1867 
   1868 status_t Surface::unlockAndPost()
   1869 {
   1870     if (mLockedBuffer == nullptr) {
   1871         ALOGE("Surface::unlockAndPost failed, no locked buffer");
   1872         return INVALID_OPERATION;
   1873     }
   1874 
   1875     int fd = -1;
   1876     status_t err = mLockedBuffer->unlockAsync(&fd);
   1877     ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
   1878 
   1879     err = queueBuffer(mLockedBuffer.get(), fd);
   1880     ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
   1881             mLockedBuffer->handle, strerror(-err));
   1882 
   1883     mPostedBuffer = mLockedBuffer;
   1884     mLockedBuffer = nullptr;
   1885     return err;
   1886 }
   1887 
   1888 bool Surface::waitForNextFrame(uint64_t lastFrame, nsecs_t timeout) {
   1889     Mutex::Autolock lock(mMutex);
   1890     if (mNextFrameNumber > lastFrame) {
   1891       return true;
   1892     }
   1893     return mQueueBufferCondition.waitRelative(mMutex, timeout) == OK;
   1894 }
   1895 
   1896 status_t Surface::getUniqueId(uint64_t* outId) const {
   1897     Mutex::Autolock lock(mMutex);
   1898     return mGraphicBufferProducer->getUniqueId(outId);
   1899 }
   1900 
   1901 int Surface::getConsumerUsage(uint64_t* outUsage) const {
   1902     Mutex::Autolock lock(mMutex);
   1903     return mGraphicBufferProducer->getConsumerUsage(outUsage);
   1904 }
   1905 
   1906 nsecs_t Surface::getLastDequeueStartTime() const {
   1907     Mutex::Autolock lock(mMutex);
   1908     return mLastDequeueStartTime;
   1909 }
   1910 
   1911 status_t Surface::getAndFlushRemovedBuffers(std::vector<sp<GraphicBuffer>>* out) {
   1912     if (out == nullptr) {
   1913         ALOGE("%s: out must not be null!", __FUNCTION__);
   1914         return BAD_VALUE;
   1915     }
   1916 
   1917     Mutex::Autolock lock(mMutex);
   1918     *out = mRemovedBuffers;
   1919     mRemovedBuffers.clear();
   1920     return OK;
   1921 }
   1922 
   1923 status_t Surface::attachAndQueueBuffer(Surface* surface, sp<GraphicBuffer> buffer) {
   1924     if (buffer == nullptr) {
   1925         return BAD_VALUE;
   1926     }
   1927     int err = static_cast<ANativeWindow*>(surface)->perform(surface, NATIVE_WINDOW_API_CONNECT,
   1928                                                             NATIVE_WINDOW_API_CPU);
   1929     if (err != OK) {
   1930         return err;
   1931     }
   1932     err = surface->attachBuffer(buffer->getNativeBuffer());
   1933     if (err != OK) {
   1934         return err;
   1935     }
   1936     err = static_cast<ANativeWindow*>(surface)->queueBuffer(surface, buffer->getNativeBuffer(), -1);
   1937     if (err != OK) {
   1938         return err;
   1939     }
   1940     err = surface->disconnect(NATIVE_WINDOW_API_CPU);
   1941     return err;
   1942 }
   1943 
   1944 }; // namespace android
   1945