| /* |
| * Copyright 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <inttypes.h> |
| #include <pwd.h> |
| #include <sys/types.h> |
| |
| #define LOG_TAG "BufferQueueConsumer" |
| #define ATRACE_TAG ATRACE_TAG_GRAPHICS |
| //#define LOG_NDEBUG 0 |
| |
| #if DEBUG_ONLY_CODE |
| #define VALIDATE_CONSISTENCY() do { mCore->validateConsistencyLocked(); } while (0) |
| #else |
| #define VALIDATE_CONSISTENCY() |
| #endif |
| |
| #include <gui/BufferItem.h> |
| #include <gui/BufferQueueConsumer.h> |
| #include <gui/BufferQueueCore.h> |
| #include <gui/IConsumerListener.h> |
| #include <gui/IProducerListener.h> |
| |
| #include <private/gui/BufferQueueThreadState.h> |
| #ifndef __ANDROID_VNDK__ |
| #include <binder/PermissionCache.h> |
| #include <vndksupport/linker.h> |
| #endif |
| |
| #include <system/window.h> |
| |
| namespace android { |
| |
| BufferQueueConsumer::BufferQueueConsumer(const sp<BufferQueueCore>& core) : |
| mCore(core), |
| mSlots(core->mSlots), |
| mConsumerName() {} |
| |
| BufferQueueConsumer::~BufferQueueConsumer() {} |
| |
| status_t BufferQueueConsumer::acquireBuffer(BufferItem* outBuffer, |
| nsecs_t expectedPresent, uint64_t maxFrameNumber) { |
| ATRACE_CALL(); |
| |
| int numDroppedBuffers = 0; |
| sp<IProducerListener> listener; |
| { |
| std::unique_lock<std::mutex> lock(mCore->mMutex); |
| |
| // Check that the consumer doesn't currently have the maximum number of |
| // buffers acquired. We allow the max buffer count to be exceeded by one |
| // buffer so that the consumer can successfully set up the newly acquired |
| // buffer before releasing the old one. |
| int numAcquiredBuffers = 0; |
| for (int s : mCore->mActiveBuffers) { |
| if (mSlots[s].mBufferState.isAcquired()) { |
| ++numAcquiredBuffers; |
| } |
| } |
| if (numAcquiredBuffers >= mCore->mMaxAcquiredBufferCount + 1) { |
| BQ_LOGE("acquireBuffer: max acquired buffer count reached: %d (max %d)", |
| numAcquiredBuffers, mCore->mMaxAcquiredBufferCount); |
| return INVALID_OPERATION; |
| } |
| |
| bool sharedBufferAvailable = mCore->mSharedBufferMode && |
| mCore->mAutoRefresh && mCore->mSharedBufferSlot != |
| BufferQueueCore::INVALID_BUFFER_SLOT; |
| |
| // In asynchronous mode the list is guaranteed to be one buffer deep, |
| // while in synchronous mode we use the oldest buffer. |
| if (mCore->mQueue.empty() && !sharedBufferAvailable) { |
| return NO_BUFFER_AVAILABLE; |
| } |
| |
| BufferQueueCore::Fifo::iterator front(mCore->mQueue.begin()); |
| |
| // If expectedPresent is specified, we may not want to return a buffer yet. |
| // If it's specified and there's more than one buffer queued, we may want |
| // to drop a buffer. |
| // Skip this if we're in shared buffer mode and the queue is empty, |
| // since in that case we'll just return the shared buffer. |
| if (expectedPresent != 0 && !mCore->mQueue.empty()) { |
| // The 'expectedPresent' argument indicates when the buffer is expected |
| // to be presented on-screen. If the buffer's desired present time is |
| // earlier (less) than expectedPresent -- meaning it will be displayed |
| // on time or possibly late if we show it as soon as possible -- we |
| // acquire and return it. If we don't want to display it until after the |
| // expectedPresent time, we return PRESENT_LATER without acquiring it. |
| // |
| // To be safe, we don't defer acquisition if expectedPresent is more |
| // than one second in the future beyond the desired present time |
| // (i.e., we'd be holding the buffer for a long time). |
| // |
| // NOTE: Code assumes monotonic time values from the system clock |
| // are positive. |
| |
| // Start by checking to see if we can drop frames. We skip this check if |
| // the timestamps are being auto-generated by Surface. If the app isn't |
| // generating timestamps explicitly, it probably doesn't want frames to |
| // be discarded based on them. |
| while (mCore->mQueue.size() > 1 && !mCore->mQueue[0].mIsAutoTimestamp) { |
| const BufferItem& bufferItem(mCore->mQueue[1]); |
| |
| // If dropping entry[0] would leave us with a buffer that the |
| // consumer is not yet ready for, don't drop it. |
| if (maxFrameNumber && bufferItem.mFrameNumber > maxFrameNumber) { |
| break; |
| } |
| |
| // If entry[1] is timely, drop entry[0] (and repeat). We apply an |
| // additional criterion here: we only drop the earlier buffer if our |
| // desiredPresent falls within +/- 1 second of the expected present. |
| // Otherwise, bogus desiredPresent times (e.g., 0 or a small |
| // relative timestamp), which normally mean "ignore the timestamp |
| // and acquire immediately", would cause us to drop frames. |
| // |
| // We may want to add an additional criterion: don't drop the |
| // earlier buffer if entry[1]'s fence hasn't signaled yet. |
| nsecs_t desiredPresent = bufferItem.mTimestamp; |
| if (desiredPresent < expectedPresent - MAX_REASONABLE_NSEC || |
| desiredPresent > expectedPresent) { |
| // This buffer is set to display in the near future, or |
| // desiredPresent is garbage. Either way we don't want to drop |
| // the previous buffer just to get this on the screen sooner. |
| BQ_LOGV("acquireBuffer: nodrop desire=%" PRId64 " expect=%" |
| PRId64 " (%" PRId64 ") now=%" PRId64, |
| desiredPresent, expectedPresent, |
| desiredPresent - expectedPresent, |
| systemTime(CLOCK_MONOTONIC)); |
| break; |
| } |
| |
| BQ_LOGV("acquireBuffer: drop desire=%" PRId64 " expect=%" PRId64 |
| " size=%zu", |
| desiredPresent, expectedPresent, mCore->mQueue.size()); |
| |
| if (!front->mIsStale) { |
| // Front buffer is still in mSlots, so mark the slot as free |
| mSlots[front->mSlot].mBufferState.freeQueued(); |
| |
| // After leaving shared buffer mode, the shared buffer will |
| // still be around. Mark it as no longer shared if this |
| // operation causes it to be free. |
| if (!mCore->mSharedBufferMode && |
| mSlots[front->mSlot].mBufferState.isFree()) { |
| mSlots[front->mSlot].mBufferState.mShared = false; |
| } |
| |
| // Don't put the shared buffer on the free list |
| if (!mSlots[front->mSlot].mBufferState.isShared()) { |
| mCore->mActiveBuffers.erase(front->mSlot); |
| mCore->mFreeBuffers.push_back(front->mSlot); |
| } |
| |
| listener = mCore->mConnectedProducerListener; |
| ++numDroppedBuffers; |
| } |
| |
| mCore->mQueue.erase(front); |
| front = mCore->mQueue.begin(); |
| } |
| |
| // See if the front buffer is ready to be acquired |
| nsecs_t desiredPresent = front->mTimestamp; |
| bool bufferIsDue = desiredPresent <= expectedPresent || |
| desiredPresent > expectedPresent + MAX_REASONABLE_NSEC; |
| bool consumerIsReady = maxFrameNumber > 0 ? |
| front->mFrameNumber <= maxFrameNumber : true; |
| if (!bufferIsDue || !consumerIsReady) { |
| BQ_LOGV("acquireBuffer: defer desire=%" PRId64 " expect=%" PRId64 |
| " (%" PRId64 ") now=%" PRId64 " frame=%" PRIu64 |
| " consumer=%" PRIu64, |
| desiredPresent, expectedPresent, |
| desiredPresent - expectedPresent, |
| systemTime(CLOCK_MONOTONIC), |
| front->mFrameNumber, maxFrameNumber); |
| ATRACE_NAME("PRESENT_LATER"); |
| return PRESENT_LATER; |
| } |
| |
| BQ_LOGV("acquireBuffer: accept desire=%" PRId64 " expect=%" PRId64 " " |
| "(%" PRId64 ") now=%" PRId64, desiredPresent, expectedPresent, |
| desiredPresent - expectedPresent, |
| systemTime(CLOCK_MONOTONIC)); |
| } |
| |
| int slot = BufferQueueCore::INVALID_BUFFER_SLOT; |
| |
| if (sharedBufferAvailable && mCore->mQueue.empty()) { |
| // make sure the buffer has finished allocating before acquiring it |
| mCore->waitWhileAllocatingLocked(lock); |
| |
| slot = mCore->mSharedBufferSlot; |
| |
| // Recreate the BufferItem for the shared buffer from the data that |
| // was cached when it was last queued. |
| outBuffer->mGraphicBuffer = mSlots[slot].mGraphicBuffer; |
| outBuffer->mFence = Fence::NO_FENCE; |
| outBuffer->mFenceTime = FenceTime::NO_FENCE; |
| outBuffer->mCrop = mCore->mSharedBufferCache.crop; |
| outBuffer->mTransform = mCore->mSharedBufferCache.transform & |
| ~static_cast<uint32_t>( |
| NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY); |
| outBuffer->mScalingMode = mCore->mSharedBufferCache.scalingMode; |
| outBuffer->mDataSpace = mCore->mSharedBufferCache.dataspace; |
| outBuffer->mFrameNumber = mCore->mFrameCounter; |
| outBuffer->mSlot = slot; |
| outBuffer->mAcquireCalled = mSlots[slot].mAcquireCalled; |
| outBuffer->mTransformToDisplayInverse = |
| (mCore->mSharedBufferCache.transform & |
| NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY) != 0; |
| outBuffer->mSurfaceDamage = Region::INVALID_REGION; |
| outBuffer->mQueuedBuffer = false; |
| outBuffer->mIsStale = false; |
| outBuffer->mAutoRefresh = mCore->mSharedBufferMode && |
| mCore->mAutoRefresh; |
| } else { |
| slot = front->mSlot; |
| *outBuffer = *front; |
| } |
| |
| ATRACE_BUFFER_INDEX(slot); |
| |
| BQ_LOGV("acquireBuffer: acquiring { slot=%d/%" PRIu64 " buffer=%p }", |
| slot, outBuffer->mFrameNumber, outBuffer->mGraphicBuffer->handle); |
| |
| if (!outBuffer->mIsStale) { |
| mSlots[slot].mAcquireCalled = true; |
| // Don't decrease the queue count if the BufferItem wasn't |
| // previously in the queue. This happens in shared buffer mode when |
| // the queue is empty and the BufferItem is created above. |
| if (mCore->mQueue.empty()) { |
| mSlots[slot].mBufferState.acquireNotInQueue(); |
| } else { |
| mSlots[slot].mBufferState.acquire(); |
| } |
| mSlots[slot].mFence = Fence::NO_FENCE; |
| } |
| |
| // If the buffer has previously been acquired by the consumer, set |
| // mGraphicBuffer to NULL to avoid unnecessarily remapping this buffer |
| // on the consumer side |
| if (outBuffer->mAcquireCalled) { |
| outBuffer->mGraphicBuffer = nullptr; |
| } |
| |
| mCore->mQueue.erase(front); |
| |
| // We might have freed a slot while dropping old buffers, or the producer |
| // may be blocked waiting for the number of buffers in the queue to |
| // decrease. |
| mCore->mDequeueCondition.notify_all(); |
| |
| ATRACE_INT(mCore->mConsumerName.string(), |
| static_cast<int32_t>(mCore->mQueue.size())); |
| mCore->mOccupancyTracker.registerOccupancyChange(mCore->mQueue.size()); |
| |
| VALIDATE_CONSISTENCY(); |
| } |
| |
| if (listener != nullptr) { |
| for (int i = 0; i < numDroppedBuffers; ++i) { |
| listener->onBufferReleased(); |
| } |
| } |
| |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::detachBuffer(int slot) { |
| ATRACE_CALL(); |
| ATRACE_BUFFER_INDEX(slot); |
| BQ_LOGV("detachBuffer: slot %d", slot); |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| |
| if (mCore->mIsAbandoned) { |
| BQ_LOGE("detachBuffer: BufferQueue has been abandoned"); |
| return NO_INIT; |
| } |
| |
| if (mCore->mSharedBufferMode || slot == mCore->mSharedBufferSlot) { |
| BQ_LOGE("detachBuffer: detachBuffer not allowed in shared buffer mode"); |
| return BAD_VALUE; |
| } |
| |
| if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) { |
| BQ_LOGE("detachBuffer: slot index %d out of range [0, %d)", |
| slot, BufferQueueDefs::NUM_BUFFER_SLOTS); |
| return BAD_VALUE; |
| } else if (!mSlots[slot].mBufferState.isAcquired()) { |
| BQ_LOGE("detachBuffer: slot %d is not owned by the consumer " |
| "(state = %s)", slot, mSlots[slot].mBufferState.string()); |
| return BAD_VALUE; |
| } |
| |
| mSlots[slot].mBufferState.detachConsumer(); |
| mCore->mActiveBuffers.erase(slot); |
| mCore->mFreeSlots.insert(slot); |
| mCore->clearBufferSlotLocked(slot); |
| mCore->mDequeueCondition.notify_all(); |
| VALIDATE_CONSISTENCY(); |
| |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::attachBuffer(int* outSlot, |
| const sp<android::GraphicBuffer>& buffer) { |
| ATRACE_CALL(); |
| |
| if (outSlot == nullptr) { |
| BQ_LOGE("attachBuffer: outSlot must not be NULL"); |
| return BAD_VALUE; |
| } else if (buffer == nullptr) { |
| BQ_LOGE("attachBuffer: cannot attach NULL buffer"); |
| return BAD_VALUE; |
| } |
| |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| |
| if (mCore->mSharedBufferMode) { |
| BQ_LOGE("attachBuffer: cannot attach a buffer in shared buffer mode"); |
| return BAD_VALUE; |
| } |
| |
| // Make sure we don't have too many acquired buffers |
| int numAcquiredBuffers = 0; |
| for (int s : mCore->mActiveBuffers) { |
| if (mSlots[s].mBufferState.isAcquired()) { |
| ++numAcquiredBuffers; |
| } |
| } |
| |
| if (numAcquiredBuffers >= mCore->mMaxAcquiredBufferCount + 1) { |
| BQ_LOGE("attachBuffer: max acquired buffer count reached: %d " |
| "(max %d)", numAcquiredBuffers, |
| mCore->mMaxAcquiredBufferCount); |
| return INVALID_OPERATION; |
| } |
| |
| if (buffer->getGenerationNumber() != mCore->mGenerationNumber) { |
| BQ_LOGE("attachBuffer: generation number mismatch [buffer %u] " |
| "[queue %u]", buffer->getGenerationNumber(), |
| mCore->mGenerationNumber); |
| return BAD_VALUE; |
| } |
| |
| // Find a free slot to put the buffer into |
| int found = BufferQueueCore::INVALID_BUFFER_SLOT; |
| if (!mCore->mFreeSlots.empty()) { |
| auto slot = mCore->mFreeSlots.begin(); |
| found = *slot; |
| mCore->mFreeSlots.erase(slot); |
| } else if (!mCore->mFreeBuffers.empty()) { |
| found = mCore->mFreeBuffers.front(); |
| mCore->mFreeBuffers.remove(found); |
| } |
| if (found == BufferQueueCore::INVALID_BUFFER_SLOT) { |
| BQ_LOGE("attachBuffer: could not find free buffer slot"); |
| return NO_MEMORY; |
| } |
| |
| mCore->mActiveBuffers.insert(found); |
| *outSlot = found; |
| ATRACE_BUFFER_INDEX(*outSlot); |
| BQ_LOGV("attachBuffer: returning slot %d", *outSlot); |
| |
| mSlots[*outSlot].mGraphicBuffer = buffer; |
| mSlots[*outSlot].mBufferState.attachConsumer(); |
| mSlots[*outSlot].mNeedsReallocation = true; |
| mSlots[*outSlot].mFence = Fence::NO_FENCE; |
| mSlots[*outSlot].mFrameNumber = 0; |
| |
| // mAcquireCalled tells BufferQueue that it doesn't need to send a valid |
| // GraphicBuffer pointer on the next acquireBuffer call, which decreases |
| // Binder traffic by not un/flattening the GraphicBuffer. However, it |
| // requires that the consumer maintain a cached copy of the slot <--> buffer |
| // mappings, which is why the consumer doesn't need the valid pointer on |
| // acquire. |
| // |
| // The StreamSplitter is one of the primary users of the attach/detach |
| // logic, and while it is running, all buffers it acquires are immediately |
| // detached, and all buffers it eventually releases are ones that were |
| // attached (as opposed to having been obtained from acquireBuffer), so it |
| // doesn't make sense to maintain the slot/buffer mappings, which would |
| // become invalid for every buffer during detach/attach. By setting this to |
| // false, the valid GraphicBuffer pointer will always be sent with acquire |
| // for attached buffers. |
| mSlots[*outSlot].mAcquireCalled = false; |
| |
| VALIDATE_CONSISTENCY(); |
| |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::releaseBuffer(int slot, uint64_t frameNumber, |
| const sp<Fence>& releaseFence, EGLDisplay eglDisplay, |
| EGLSyncKHR eglFence) { |
| ATRACE_CALL(); |
| ATRACE_BUFFER_INDEX(slot); |
| |
| if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS || |
| releaseFence == nullptr) { |
| BQ_LOGE("releaseBuffer: slot %d out of range or fence %p NULL", slot, |
| releaseFence.get()); |
| return BAD_VALUE; |
| } |
| |
| sp<IProducerListener> listener; |
| { // Autolock scope |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| |
| // If the frame number has changed because the buffer has been reallocated, |
| // we can ignore this releaseBuffer for the old buffer. |
| // Ignore this for the shared buffer where the frame number can easily |
| // get out of sync due to the buffer being queued and acquired at the |
| // same time. |
| if (frameNumber != mSlots[slot].mFrameNumber && |
| !mSlots[slot].mBufferState.isShared()) { |
| return STALE_BUFFER_SLOT; |
| } |
| |
| if (!mSlots[slot].mBufferState.isAcquired()) { |
| BQ_LOGE("releaseBuffer: attempted to release buffer slot %d " |
| "but its state was %s", slot, |
| mSlots[slot].mBufferState.string()); |
| return BAD_VALUE; |
| } |
| |
| mSlots[slot].mEglDisplay = eglDisplay; |
| mSlots[slot].mEglFence = eglFence; |
| mSlots[slot].mFence = releaseFence; |
| mSlots[slot].mBufferState.release(); |
| |
| // After leaving shared buffer mode, the shared buffer will |
| // still be around. Mark it as no longer shared if this |
| // operation causes it to be free. |
| if (!mCore->mSharedBufferMode && mSlots[slot].mBufferState.isFree()) { |
| mSlots[slot].mBufferState.mShared = false; |
| } |
| // Don't put the shared buffer on the free list. |
| if (!mSlots[slot].mBufferState.isShared()) { |
| mCore->mActiveBuffers.erase(slot); |
| mCore->mFreeBuffers.push_back(slot); |
| } |
| |
| listener = mCore->mConnectedProducerListener; |
| BQ_LOGV("releaseBuffer: releasing slot %d", slot); |
| |
| mCore->mDequeueCondition.notify_all(); |
| VALIDATE_CONSISTENCY(); |
| } // Autolock scope |
| |
| // Call back without lock held |
| if (listener != nullptr) { |
| listener->onBufferReleased(); |
| } |
| |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::connect( |
| const sp<IConsumerListener>& consumerListener, bool controlledByApp) { |
| ATRACE_CALL(); |
| |
| if (consumerListener == nullptr) { |
| BQ_LOGE("connect: consumerListener may not be NULL"); |
| return BAD_VALUE; |
| } |
| |
| BQ_LOGV("connect: controlledByApp=%s", |
| controlledByApp ? "true" : "false"); |
| |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| |
| if (mCore->mIsAbandoned) { |
| BQ_LOGE("connect: BufferQueue has been abandoned"); |
| return NO_INIT; |
| } |
| |
| mCore->mConsumerListener = consumerListener; |
| mCore->mConsumerControlledByApp = controlledByApp; |
| |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::disconnect() { |
| ATRACE_CALL(); |
| |
| BQ_LOGV("disconnect"); |
| |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| |
| if (mCore->mConsumerListener == nullptr) { |
| BQ_LOGE("disconnect: no consumer is connected"); |
| return BAD_VALUE; |
| } |
| |
| mCore->mIsAbandoned = true; |
| mCore->mConsumerListener = nullptr; |
| mCore->mQueue.clear(); |
| mCore->freeAllBuffersLocked(); |
| mCore->mSharedBufferSlot = BufferQueueCore::INVALID_BUFFER_SLOT; |
| mCore->mDequeueCondition.notify_all(); |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::getReleasedBuffers(uint64_t *outSlotMask) { |
| ATRACE_CALL(); |
| |
| if (outSlotMask == nullptr) { |
| BQ_LOGE("getReleasedBuffers: outSlotMask may not be NULL"); |
| return BAD_VALUE; |
| } |
| |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| |
| if (mCore->mIsAbandoned) { |
| BQ_LOGE("getReleasedBuffers: BufferQueue has been abandoned"); |
| return NO_INIT; |
| } |
| |
| uint64_t mask = 0; |
| for (int s = 0; s < BufferQueueDefs::NUM_BUFFER_SLOTS; ++s) { |
| if (!mSlots[s].mAcquireCalled) { |
| mask |= (1ULL << s); |
| } |
| } |
| |
| // Remove from the mask queued buffers for which acquire has been called, |
| // since the consumer will not receive their buffer addresses and so must |
| // retain their cached information |
| BufferQueueCore::Fifo::iterator current(mCore->mQueue.begin()); |
| while (current != mCore->mQueue.end()) { |
| if (current->mAcquireCalled) { |
| mask &= ~(1ULL << current->mSlot); |
| } |
| ++current; |
| } |
| |
| BQ_LOGV("getReleasedBuffers: returning mask %#" PRIx64, mask); |
| *outSlotMask = mask; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setDefaultBufferSize(uint32_t width, |
| uint32_t height) { |
| ATRACE_CALL(); |
| |
| if (width == 0 || height == 0) { |
| BQ_LOGV("setDefaultBufferSize: dimensions cannot be 0 (width=%u " |
| "height=%u)", width, height); |
| return BAD_VALUE; |
| } |
| |
| BQ_LOGV("setDefaultBufferSize: width=%u height=%u", width, height); |
| |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->mDefaultWidth = width; |
| mCore->mDefaultHeight = height; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setMaxBufferCount(int bufferCount) { |
| ATRACE_CALL(); |
| |
| if (bufferCount < 1 || bufferCount > BufferQueueDefs::NUM_BUFFER_SLOTS) { |
| BQ_LOGE("setMaxBufferCount: invalid count %d", bufferCount); |
| return BAD_VALUE; |
| } |
| |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| |
| if (mCore->mConnectedApi != BufferQueueCore::NO_CONNECTED_API) { |
| BQ_LOGE("setMaxBufferCount: producer is already connected"); |
| return INVALID_OPERATION; |
| } |
| |
| if (bufferCount < mCore->mMaxAcquiredBufferCount) { |
| BQ_LOGE("setMaxBufferCount: invalid buffer count (%d) less than" |
| "mMaxAcquiredBufferCount (%d)", bufferCount, |
| mCore->mMaxAcquiredBufferCount); |
| return BAD_VALUE; |
| } |
| |
| int delta = mCore->getMaxBufferCountLocked(mCore->mAsyncMode, |
| mCore->mDequeueBufferCannotBlock, bufferCount) - |
| mCore->getMaxBufferCountLocked(); |
| if (!mCore->adjustAvailableSlotsLocked(delta)) { |
| BQ_LOGE("setMaxBufferCount: BufferQueue failed to adjust the number of " |
| "available slots. Delta = %d", delta); |
| return BAD_VALUE; |
| } |
| |
| mCore->mMaxBufferCount = bufferCount; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setMaxAcquiredBufferCount( |
| int maxAcquiredBuffers) { |
| ATRACE_CALL(); |
| |
| if (maxAcquiredBuffers < 1 || |
| maxAcquiredBuffers > BufferQueueCore::MAX_MAX_ACQUIRED_BUFFERS) { |
| BQ_LOGE("setMaxAcquiredBufferCount: invalid count %d", |
| maxAcquiredBuffers); |
| return BAD_VALUE; |
| } |
| |
| sp<IConsumerListener> listener; |
| { // Autolock scope |
| std::unique_lock<std::mutex> lock(mCore->mMutex); |
| mCore->waitWhileAllocatingLocked(lock); |
| |
| if (mCore->mIsAbandoned) { |
| BQ_LOGE("setMaxAcquiredBufferCount: consumer is abandoned"); |
| return NO_INIT; |
| } |
| |
| if (maxAcquiredBuffers == mCore->mMaxAcquiredBufferCount) { |
| return NO_ERROR; |
| } |
| |
| // The new maxAcquiredBuffers count should not be violated by the number |
| // of currently acquired buffers |
| int acquiredCount = 0; |
| for (int slot : mCore->mActiveBuffers) { |
| if (mSlots[slot].mBufferState.isAcquired()) { |
| acquiredCount++; |
| } |
| } |
| if (acquiredCount > maxAcquiredBuffers) { |
| BQ_LOGE("setMaxAcquiredBufferCount: the requested maxAcquiredBuffer" |
| "count (%d) exceeds the current acquired buffer count (%d)", |
| maxAcquiredBuffers, acquiredCount); |
| return BAD_VALUE; |
| } |
| |
| if ((maxAcquiredBuffers + mCore->mMaxDequeuedBufferCount + |
| (mCore->mAsyncMode || mCore->mDequeueBufferCannotBlock ? 1 : 0)) |
| > mCore->mMaxBufferCount) { |
| BQ_LOGE("setMaxAcquiredBufferCount: %d acquired buffers would " |
| "exceed the maxBufferCount (%d) (maxDequeued %d async %d)", |
| maxAcquiredBuffers, mCore->mMaxBufferCount, |
| mCore->mMaxDequeuedBufferCount, mCore->mAsyncMode || |
| mCore->mDequeueBufferCannotBlock); |
| return BAD_VALUE; |
| } |
| |
| int delta = maxAcquiredBuffers - mCore->mMaxAcquiredBufferCount; |
| if (!mCore->adjustAvailableSlotsLocked(delta)) { |
| return BAD_VALUE; |
| } |
| |
| BQ_LOGV("setMaxAcquiredBufferCount: %d", maxAcquiredBuffers); |
| mCore->mMaxAcquiredBufferCount = maxAcquiredBuffers; |
| VALIDATE_CONSISTENCY(); |
| if (delta < 0) { |
| listener = mCore->mConsumerListener; |
| } |
| } |
| // Call back without lock held |
| if (listener != nullptr) { |
| listener->onBuffersReleased(); |
| } |
| |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setConsumerName(const String8& name) { |
| ATRACE_CALL(); |
| BQ_LOGV("setConsumerName: '%s'", name.string()); |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->mConsumerName = name; |
| mConsumerName = name; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setDefaultBufferFormat(PixelFormat defaultFormat) { |
| ATRACE_CALL(); |
| BQ_LOGV("setDefaultBufferFormat: %u", defaultFormat); |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->mDefaultBufferFormat = defaultFormat; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setDefaultBufferDataSpace( |
| android_dataspace defaultDataSpace) { |
| ATRACE_CALL(); |
| BQ_LOGV("setDefaultBufferDataSpace: %u", defaultDataSpace); |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->mDefaultBufferDataSpace = defaultDataSpace; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setConsumerUsageBits(uint64_t usage) { |
| ATRACE_CALL(); |
| BQ_LOGV("setConsumerUsageBits: %#" PRIx64, usage); |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->mConsumerUsageBits = usage; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setConsumerIsProtected(bool isProtected) { |
| ATRACE_CALL(); |
| BQ_LOGV("setConsumerIsProtected: %s", isProtected ? "true" : "false"); |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->mConsumerIsProtected = isProtected; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::setTransformHint(uint32_t hint) { |
| ATRACE_CALL(); |
| BQ_LOGV("setTransformHint: %#x", hint); |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->mTransformHint = hint; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::getSidebandStream(sp<NativeHandle>* outStream) const { |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| *outStream = mCore->mSidebandStream; |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::getOccupancyHistory(bool forceFlush, |
| std::vector<OccupancyTracker::Segment>* outHistory) { |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| *outHistory = mCore->mOccupancyTracker.getSegmentHistory(forceFlush); |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::discardFreeBuffers() { |
| std::lock_guard<std::mutex> lock(mCore->mMutex); |
| mCore->discardFreeBuffersLocked(); |
| return NO_ERROR; |
| } |
| |
| status_t BufferQueueConsumer::dumpState(const String8& prefix, String8* outResult) const { |
| struct passwd* pwd = getpwnam("shell"); |
| uid_t shellUid = pwd ? pwd->pw_uid : 0; |
| if (!shellUid) { |
| int savedErrno = errno; |
| BQ_LOGE("Cannot get AID_SHELL"); |
| return savedErrno ? -savedErrno : UNKNOWN_ERROR; |
| } |
| |
| bool denied = false; |
| const uid_t uid = BufferQueueThreadState::getCallingUid(); |
| #ifndef __ANDROID_VNDK__ |
| // permission check can't be done for vendors as vendors have no access to |
| // the PermissionController. We need to do a runtime check as well, since |
| // the system variant of libgui can be loaded in a vendor process. For eg: |
| // if a HAL uses an llndk library that depends on libgui (libmediandk etc). |
| if (!android_is_in_vendor_process()) { |
| const pid_t pid = BufferQueueThreadState::getCallingPid(); |
| if ((uid != shellUid) && |
| !PermissionCache::checkPermission(String16("android.permission.DUMP"), pid, uid)) { |
| outResult->appendFormat("Permission Denial: can't dump BufferQueueConsumer " |
| "from pid=%d, uid=%d\n", |
| pid, uid); |
| denied = true; |
| } |
| } |
| #else |
| if (uid != shellUid) { |
| denied = true; |
| } |
| #endif |
| if (denied) { |
| android_errorWriteWithInfoLog(0x534e4554, "27046057", |
| static_cast<int32_t>(uid), nullptr, 0); |
| return PERMISSION_DENIED; |
| } |
| |
| mCore->dumpState(prefix, outResult); |
| return NO_ERROR; |
| } |
| |
| } // namespace android |