e12cfc23b2
* commit '55f71bc0800b9ec7a779c5d30d5a90e074c2526b': Replace IInterface::asBinder() with a static
1016 lines
37 KiB
C++
1016 lines
37 KiB
C++
/*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <inttypes.h>
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#define LOG_TAG "BufferQueueProducer"
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
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//#define LOG_NDEBUG 0
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#define EGL_EGLEXT_PROTOTYPES
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#include <gui/BufferItem.h>
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#include <gui/BufferQueueCore.h>
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#include <gui/BufferQueueProducer.h>
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#include <gui/IConsumerListener.h>
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#include <gui/IGraphicBufferAlloc.h>
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#include <gui/IProducerListener.h>
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#include <utils/Log.h>
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#include <utils/Trace.h>
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namespace android {
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BufferQueueProducer::BufferQueueProducer(const sp<BufferQueueCore>& core) :
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mCore(core),
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mSlots(core->mSlots),
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mConsumerName(),
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mStickyTransform(0),
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mLastQueueBufferFence(Fence::NO_FENCE),
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mCallbackMutex(),
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mNextCallbackTicket(0),
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mCurrentCallbackTicket(0),
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mCallbackCondition() {}
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BufferQueueProducer::~BufferQueueProducer() {}
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status_t BufferQueueProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
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ATRACE_CALL();
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BQ_LOGV("requestBuffer: slot %d", slot);
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Mutex::Autolock lock(mCore->mMutex);
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if (mCore->mIsAbandoned) {
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BQ_LOGE("requestBuffer: BufferQueue has been abandoned");
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return NO_INIT;
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}
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if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) {
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BQ_LOGE("requestBuffer: slot index %d out of range [0, %d)",
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slot, BufferQueueDefs::NUM_BUFFER_SLOTS);
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return BAD_VALUE;
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} else if (mSlots[slot].mBufferState != BufferSlot::DEQUEUED) {
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BQ_LOGE("requestBuffer: slot %d is not owned by the producer "
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"(state = %d)", slot, mSlots[slot].mBufferState);
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return BAD_VALUE;
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}
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mSlots[slot].mRequestBufferCalled = true;
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*buf = mSlots[slot].mGraphicBuffer;
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return NO_ERROR;
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}
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status_t BufferQueueProducer::setBufferCount(int bufferCount) {
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ATRACE_CALL();
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BQ_LOGV("setBufferCount: count = %d", bufferCount);
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sp<IConsumerListener> listener;
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{ // Autolock scope
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Mutex::Autolock lock(mCore->mMutex);
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mCore->waitWhileAllocatingLocked();
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if (mCore->mIsAbandoned) {
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BQ_LOGE("setBufferCount: BufferQueue has been abandoned");
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return NO_INIT;
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}
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if (bufferCount > BufferQueueDefs::NUM_BUFFER_SLOTS) {
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BQ_LOGE("setBufferCount: bufferCount %d too large (max %d)",
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bufferCount, BufferQueueDefs::NUM_BUFFER_SLOTS);
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return BAD_VALUE;
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}
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// There must be no dequeued buffers when changing the buffer count.
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for (int s = 0; s < BufferQueueDefs::NUM_BUFFER_SLOTS; ++s) {
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if (mSlots[s].mBufferState == BufferSlot::DEQUEUED) {
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BQ_LOGE("setBufferCount: buffer owned by producer");
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return BAD_VALUE;
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}
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}
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if (bufferCount == 0) {
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mCore->mOverrideMaxBufferCount = 0;
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mCore->mDequeueCondition.broadcast();
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return NO_ERROR;
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}
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const int minBufferSlots = mCore->getMinMaxBufferCountLocked(false);
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if (bufferCount < minBufferSlots) {
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BQ_LOGE("setBufferCount: requested buffer count %d is less than "
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"minimum %d", bufferCount, minBufferSlots);
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return BAD_VALUE;
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}
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// Here we are guaranteed that the producer doesn't have any dequeued
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// buffers and will release all of its buffer references. We don't
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// clear the queue, however, so that currently queued buffers still
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// get displayed.
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mCore->freeAllBuffersLocked();
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mCore->mOverrideMaxBufferCount = bufferCount;
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mCore->mDequeueCondition.broadcast();
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listener = mCore->mConsumerListener;
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} // Autolock scope
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// Call back without lock held
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if (listener != NULL) {
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listener->onBuffersReleased();
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}
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return NO_ERROR;
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}
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status_t BufferQueueProducer::waitForFreeSlotThenRelock(const char* caller,
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bool async, int* found, status_t* returnFlags) const {
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bool tryAgain = true;
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while (tryAgain) {
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if (mCore->mIsAbandoned) {
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BQ_LOGE("%s: BufferQueue has been abandoned", caller);
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return NO_INIT;
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}
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const int maxBufferCount = mCore->getMaxBufferCountLocked(async);
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if (async && mCore->mOverrideMaxBufferCount) {
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// FIXME: Some drivers are manually setting the buffer count
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// (which they shouldn't), so we do this extra test here to
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// handle that case. This is TEMPORARY until we get this fixed.
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if (mCore->mOverrideMaxBufferCount < maxBufferCount) {
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BQ_LOGE("%s: async mode is invalid with buffer count override",
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caller);
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return BAD_VALUE;
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}
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}
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// Free up any buffers that are in slots beyond the max buffer count
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for (int s = maxBufferCount; s < BufferQueueDefs::NUM_BUFFER_SLOTS; ++s) {
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assert(mSlots[s].mBufferState == BufferSlot::FREE);
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if (mSlots[s].mGraphicBuffer != NULL) {
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mCore->freeBufferLocked(s);
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*returnFlags |= RELEASE_ALL_BUFFERS;
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}
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}
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// Look for a free buffer to give to the client
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*found = BufferQueueCore::INVALID_BUFFER_SLOT;
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int dequeuedCount = 0;
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int acquiredCount = 0;
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for (int s = 0; s < maxBufferCount; ++s) {
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switch (mSlots[s].mBufferState) {
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case BufferSlot::DEQUEUED:
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++dequeuedCount;
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break;
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case BufferSlot::ACQUIRED:
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++acquiredCount;
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break;
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case BufferSlot::FREE:
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// We return the oldest of the free buffers to avoid
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// stalling the producer if possible, since the consumer
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// may still have pending reads of in-flight buffers
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if (*found == BufferQueueCore::INVALID_BUFFER_SLOT ||
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mSlots[s].mFrameNumber < mSlots[*found].mFrameNumber) {
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*found = s;
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}
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break;
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default:
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break;
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}
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}
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// Producers are not allowed to dequeue more than one buffer if they
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// did not set a buffer count
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if (!mCore->mOverrideMaxBufferCount && dequeuedCount) {
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BQ_LOGE("%s: can't dequeue multiple buffers without setting the "
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"buffer count", caller);
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return INVALID_OPERATION;
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}
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// See whether a buffer has been queued since the last
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// setBufferCount so we know whether to perform the min undequeued
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// buffers check below
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if (mCore->mBufferHasBeenQueued) {
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// Make sure the producer is not trying to dequeue more buffers
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// than allowed
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const int newUndequeuedCount =
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maxBufferCount - (dequeuedCount + 1);
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const int minUndequeuedCount =
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mCore->getMinUndequeuedBufferCountLocked(async);
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if (newUndequeuedCount < minUndequeuedCount) {
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BQ_LOGE("%s: min undequeued buffer count (%d) exceeded "
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"(dequeued=%d undequeued=%d)",
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caller, minUndequeuedCount,
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dequeuedCount, newUndequeuedCount);
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return INVALID_OPERATION;
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}
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}
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// If we disconnect and reconnect quickly, we can be in a state where
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// our slots are empty but we have many buffers in the queue. This can
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// cause us to run out of memory if we outrun the consumer. Wait here if
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// it looks like we have too many buffers queued up.
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bool tooManyBuffers = mCore->mQueue.size()
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> static_cast<size_t>(maxBufferCount);
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if (tooManyBuffers) {
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BQ_LOGV("%s: queue size is %zu, waiting", caller,
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mCore->mQueue.size());
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}
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// If no buffer is found, or if the queue has too many buffers
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// outstanding, wait for a buffer to be acquired or released, or for the
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// max buffer count to change.
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tryAgain = (*found == BufferQueueCore::INVALID_BUFFER_SLOT) ||
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tooManyBuffers;
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if (tryAgain) {
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// Return an error if we're in non-blocking mode (producer and
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// consumer are controlled by the application).
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// However, the consumer is allowed to briefly acquire an extra
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// buffer (which could cause us to have to wait here), which is
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// okay, since it is only used to implement an atomic acquire +
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// release (e.g., in GLConsumer::updateTexImage())
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if (mCore->mDequeueBufferCannotBlock &&
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(acquiredCount <= mCore->mMaxAcquiredBufferCount)) {
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return WOULD_BLOCK;
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}
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mCore->mDequeueCondition.wait(mCore->mMutex);
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}
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} // while (tryAgain)
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return NO_ERROR;
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}
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status_t BufferQueueProducer::dequeueBuffer(int *outSlot,
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sp<android::Fence> *outFence, bool async,
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uint32_t width, uint32_t height, uint32_t format, uint32_t usage) {
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ATRACE_CALL();
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{ // Autolock scope
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Mutex::Autolock lock(mCore->mMutex);
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mConsumerName = mCore->mConsumerName;
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} // Autolock scope
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BQ_LOGV("dequeueBuffer: async=%s w=%u h=%u format=%#x, usage=%#x",
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async ? "true" : "false", width, height, format, usage);
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if ((width && !height) || (!width && height)) {
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BQ_LOGE("dequeueBuffer: invalid size: w=%u h=%u", width, height);
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return BAD_VALUE;
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}
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status_t returnFlags = NO_ERROR;
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EGLDisplay eglDisplay = EGL_NO_DISPLAY;
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EGLSyncKHR eglFence = EGL_NO_SYNC_KHR;
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bool attachedByConsumer = false;
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{ // Autolock scope
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Mutex::Autolock lock(mCore->mMutex);
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mCore->waitWhileAllocatingLocked();
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if (format == 0) {
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format = mCore->mDefaultBufferFormat;
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}
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// Enable the usage bits the consumer requested
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usage |= mCore->mConsumerUsageBits;
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int found;
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status_t status = waitForFreeSlotThenRelock("dequeueBuffer", async,
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&found, &returnFlags);
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if (status != NO_ERROR) {
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return status;
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}
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// This should not happen
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if (found == BufferQueueCore::INVALID_BUFFER_SLOT) {
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BQ_LOGE("dequeueBuffer: no available buffer slots");
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return -EBUSY;
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}
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*outSlot = found;
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ATRACE_BUFFER_INDEX(found);
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attachedByConsumer = mSlots[found].mAttachedByConsumer;
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const bool useDefaultSize = !width && !height;
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if (useDefaultSize) {
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width = mCore->mDefaultWidth;
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height = mCore->mDefaultHeight;
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}
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mSlots[found].mBufferState = BufferSlot::DEQUEUED;
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const sp<GraphicBuffer>& buffer(mSlots[found].mGraphicBuffer);
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if ((buffer == NULL) ||
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(static_cast<uint32_t>(buffer->width) != width) ||
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(static_cast<uint32_t>(buffer->height) != height) ||
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(static_cast<uint32_t>(buffer->format) != format) ||
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((static_cast<uint32_t>(buffer->usage) & usage) != usage))
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{
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mSlots[found].mAcquireCalled = false;
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mSlots[found].mGraphicBuffer = NULL;
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mSlots[found].mRequestBufferCalled = false;
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mSlots[found].mEglDisplay = EGL_NO_DISPLAY;
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mSlots[found].mEglFence = EGL_NO_SYNC_KHR;
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mSlots[found].mFence = Fence::NO_FENCE;
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returnFlags |= BUFFER_NEEDS_REALLOCATION;
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}
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if (CC_UNLIKELY(mSlots[found].mFence == NULL)) {
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BQ_LOGE("dequeueBuffer: about to return a NULL fence - "
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"slot=%d w=%d h=%d format=%u",
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found, buffer->width, buffer->height, buffer->format);
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}
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eglDisplay = mSlots[found].mEglDisplay;
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eglFence = mSlots[found].mEglFence;
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*outFence = mSlots[found].mFence;
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mSlots[found].mEglFence = EGL_NO_SYNC_KHR;
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mSlots[found].mFence = Fence::NO_FENCE;
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} // Autolock scope
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if (returnFlags & BUFFER_NEEDS_REALLOCATION) {
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status_t error;
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BQ_LOGV("dequeueBuffer: allocating a new buffer for slot %d", *outSlot);
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sp<GraphicBuffer> graphicBuffer(mCore->mAllocator->createGraphicBuffer(
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width, height, format, usage, &error));
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if (graphicBuffer == NULL) {
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BQ_LOGE("dequeueBuffer: createGraphicBuffer failed");
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return error;
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}
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{ // Autolock scope
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Mutex::Autolock lock(mCore->mMutex);
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if (mCore->mIsAbandoned) {
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BQ_LOGE("dequeueBuffer: BufferQueue has been abandoned");
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return NO_INIT;
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}
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mSlots[*outSlot].mFrameNumber = UINT32_MAX;
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mSlots[*outSlot].mGraphicBuffer = graphicBuffer;
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} // Autolock scope
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}
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if (attachedByConsumer) {
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returnFlags |= BUFFER_NEEDS_REALLOCATION;
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}
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if (eglFence != EGL_NO_SYNC_KHR) {
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EGLint result = eglClientWaitSyncKHR(eglDisplay, eglFence, 0,
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1000000000);
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// If something goes wrong, log the error, but return the buffer without
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// synchronizing access to it. It's too late at this point to abort the
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// dequeue operation.
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if (result == EGL_FALSE) {
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BQ_LOGE("dequeueBuffer: error %#x waiting for fence",
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eglGetError());
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} else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
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BQ_LOGE("dequeueBuffer: timeout waiting for fence");
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}
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eglDestroySyncKHR(eglDisplay, eglFence);
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}
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BQ_LOGV("dequeueBuffer: returning slot=%d/%" PRIu64 " buf=%p flags=%#x",
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*outSlot,
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mSlots[*outSlot].mFrameNumber,
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mSlots[*outSlot].mGraphicBuffer->handle, returnFlags);
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return returnFlags;
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}
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status_t BufferQueueProducer::detachBuffer(int slot) {
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ATRACE_CALL();
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ATRACE_BUFFER_INDEX(slot);
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BQ_LOGV("detachBuffer(P): slot %d", slot);
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Mutex::Autolock lock(mCore->mMutex);
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if (mCore->mIsAbandoned) {
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BQ_LOGE("detachBuffer(P): BufferQueue has been abandoned");
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return NO_INIT;
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}
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if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) {
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BQ_LOGE("detachBuffer(P): slot index %d out of range [0, %d)",
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slot, BufferQueueDefs::NUM_BUFFER_SLOTS);
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return BAD_VALUE;
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} else if (mSlots[slot].mBufferState != BufferSlot::DEQUEUED) {
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BQ_LOGE("detachBuffer(P): slot %d is not owned by the producer "
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"(state = %d)", slot, mSlots[slot].mBufferState);
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return BAD_VALUE;
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} else if (!mSlots[slot].mRequestBufferCalled) {
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BQ_LOGE("detachBuffer(P): buffer in slot %d has not been requested",
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slot);
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return BAD_VALUE;
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}
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mCore->freeBufferLocked(slot);
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mCore->mDequeueCondition.broadcast();
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return NO_ERROR;
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}
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status_t BufferQueueProducer::detachNextBuffer(sp<GraphicBuffer>* outBuffer,
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sp<Fence>* outFence) {
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ATRACE_CALL();
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if (outBuffer == NULL) {
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BQ_LOGE("detachNextBuffer: outBuffer must not be NULL");
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return BAD_VALUE;
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} else if (outFence == NULL) {
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BQ_LOGE("detachNextBuffer: outFence must not be NULL");
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return BAD_VALUE;
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}
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Mutex::Autolock lock(mCore->mMutex);
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mCore->waitWhileAllocatingLocked();
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if (mCore->mIsAbandoned) {
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BQ_LOGE("detachNextBuffer: BufferQueue has been abandoned");
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return NO_INIT;
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}
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// Find the oldest valid slot
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int found = BufferQueueCore::INVALID_BUFFER_SLOT;
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for (int s = 0; s < BufferQueueDefs::NUM_BUFFER_SLOTS; ++s) {
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if (mSlots[s].mBufferState == BufferSlot::FREE &&
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mSlots[s].mGraphicBuffer != NULL) {
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if (found == BufferQueueCore::INVALID_BUFFER_SLOT ||
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mSlots[s].mFrameNumber < mSlots[found].mFrameNumber) {
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found = s;
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}
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}
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}
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if (found == BufferQueueCore::INVALID_BUFFER_SLOT) {
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return NO_MEMORY;
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}
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BQ_LOGV("detachNextBuffer detached slot %d", found);
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*outBuffer = mSlots[found].mGraphicBuffer;
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*outFence = mSlots[found].mFence;
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mCore->freeBufferLocked(found);
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return NO_ERROR;
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}
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status_t BufferQueueProducer::attachBuffer(int* outSlot,
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const sp<android::GraphicBuffer>& buffer) {
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ATRACE_CALL();
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if (outSlot == NULL) {
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BQ_LOGE("attachBuffer(P): outSlot must not be NULL");
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return BAD_VALUE;
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} else if (buffer == NULL) {
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BQ_LOGE("attachBuffer(P): cannot attach NULL buffer");
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return BAD_VALUE;
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}
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Mutex::Autolock lock(mCore->mMutex);
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mCore->waitWhileAllocatingLocked();
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status_t returnFlags = NO_ERROR;
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int found;
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// TODO: Should we provide an async flag to attachBuffer? It seems
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// unlikely that buffers which we are attaching to a BufferQueue will
|
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// be asynchronous (droppable), but it may not be impossible.
|
|
status_t status = waitForFreeSlotThenRelock("attachBuffer(P)", false,
|
|
&found, &returnFlags);
|
|
if (status != NO_ERROR) {
|
|
return status;
|
|
}
|
|
|
|
// This should not happen
|
|
if (found == BufferQueueCore::INVALID_BUFFER_SLOT) {
|
|
BQ_LOGE("attachBuffer(P): no available buffer slots");
|
|
return -EBUSY;
|
|
}
|
|
|
|
*outSlot = found;
|
|
ATRACE_BUFFER_INDEX(*outSlot);
|
|
BQ_LOGV("attachBuffer(P): returning slot %d flags=%#x",
|
|
*outSlot, returnFlags);
|
|
|
|
mSlots[*outSlot].mGraphicBuffer = buffer;
|
|
mSlots[*outSlot].mBufferState = BufferSlot::DEQUEUED;
|
|
mSlots[*outSlot].mEglFence = EGL_NO_SYNC_KHR;
|
|
mSlots[*outSlot].mFence = Fence::NO_FENCE;
|
|
mSlots[*outSlot].mRequestBufferCalled = true;
|
|
|
|
return returnFlags;
|
|
}
|
|
|
|
status_t BufferQueueProducer::queueBuffer(int slot,
|
|
const QueueBufferInput &input, QueueBufferOutput *output) {
|
|
ATRACE_CALL();
|
|
ATRACE_BUFFER_INDEX(slot);
|
|
|
|
int64_t timestamp;
|
|
bool isAutoTimestamp;
|
|
Rect crop;
|
|
int scalingMode;
|
|
uint32_t transform;
|
|
uint32_t stickyTransform;
|
|
bool async;
|
|
sp<Fence> fence;
|
|
input.deflate(×tamp, &isAutoTimestamp, &crop, &scalingMode, &transform,
|
|
&async, &fence, &stickyTransform);
|
|
|
|
if (fence == NULL) {
|
|
BQ_LOGE("queueBuffer: fence is NULL");
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
switch (scalingMode) {
|
|
case NATIVE_WINDOW_SCALING_MODE_FREEZE:
|
|
case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
|
|
case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
|
|
case NATIVE_WINDOW_SCALING_MODE_NO_SCALE_CROP:
|
|
break;
|
|
default:
|
|
BQ_LOGE("queueBuffer: unknown scaling mode %d", scalingMode);
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
sp<IConsumerListener> frameAvailableListener;
|
|
sp<IConsumerListener> frameReplacedListener;
|
|
int callbackTicket = 0;
|
|
BufferItem item;
|
|
{ // Autolock scope
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
|
|
if (mCore->mIsAbandoned) {
|
|
BQ_LOGE("queueBuffer: BufferQueue has been abandoned");
|
|
return NO_INIT;
|
|
}
|
|
|
|
const int maxBufferCount = mCore->getMaxBufferCountLocked(async);
|
|
if (async && mCore->mOverrideMaxBufferCount) {
|
|
// FIXME: Some drivers are manually setting the buffer count
|
|
// (which they shouldn't), so we do this extra test here to
|
|
// handle that case. This is TEMPORARY until we get this fixed.
|
|
if (mCore->mOverrideMaxBufferCount < maxBufferCount) {
|
|
BQ_LOGE("queueBuffer: async mode is invalid with "
|
|
"buffer count override");
|
|
return BAD_VALUE;
|
|
}
|
|
}
|
|
|
|
if (slot < 0 || slot >= maxBufferCount) {
|
|
BQ_LOGE("queueBuffer: slot index %d out of range [0, %d)",
|
|
slot, maxBufferCount);
|
|
return BAD_VALUE;
|
|
} else if (mSlots[slot].mBufferState != BufferSlot::DEQUEUED) {
|
|
BQ_LOGE("queueBuffer: slot %d is not owned by the producer "
|
|
"(state = %d)", slot, mSlots[slot].mBufferState);
|
|
return BAD_VALUE;
|
|
} else if (!mSlots[slot].mRequestBufferCalled) {
|
|
BQ_LOGE("queueBuffer: slot %d was queued without requesting "
|
|
"a buffer", slot);
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
BQ_LOGV("queueBuffer: slot=%d/%" PRIu64 " time=%" PRIu64
|
|
" crop=[%d,%d,%d,%d] transform=%#x scale=%s",
|
|
slot, mCore->mFrameCounter + 1, timestamp,
|
|
crop.left, crop.top, crop.right, crop.bottom,
|
|
transform, BufferItem::scalingModeName(scalingMode));
|
|
|
|
const sp<GraphicBuffer>& graphicBuffer(mSlots[slot].mGraphicBuffer);
|
|
Rect bufferRect(graphicBuffer->getWidth(), graphicBuffer->getHeight());
|
|
Rect croppedRect;
|
|
crop.intersect(bufferRect, &croppedRect);
|
|
if (croppedRect != crop) {
|
|
BQ_LOGE("queueBuffer: crop rect is not contained within the "
|
|
"buffer in slot %d", slot);
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
mSlots[slot].mFence = fence;
|
|
mSlots[slot].mBufferState = BufferSlot::QUEUED;
|
|
++mCore->mFrameCounter;
|
|
mSlots[slot].mFrameNumber = mCore->mFrameCounter;
|
|
|
|
item.mAcquireCalled = mSlots[slot].mAcquireCalled;
|
|
item.mGraphicBuffer = mSlots[slot].mGraphicBuffer;
|
|
item.mCrop = crop;
|
|
item.mTransform = transform & ~NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY;
|
|
item.mTransformToDisplayInverse =
|
|
bool(transform & NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY);
|
|
item.mScalingMode = scalingMode;
|
|
item.mTimestamp = timestamp;
|
|
item.mIsAutoTimestamp = isAutoTimestamp;
|
|
item.mFrameNumber = mCore->mFrameCounter;
|
|
item.mSlot = slot;
|
|
item.mFence = fence;
|
|
item.mIsDroppable = mCore->mDequeueBufferCannotBlock || async;
|
|
|
|
mStickyTransform = stickyTransform;
|
|
|
|
if (mCore->mQueue.empty()) {
|
|
// When the queue is empty, we can ignore mDequeueBufferCannotBlock
|
|
// and simply queue this buffer
|
|
mCore->mQueue.push_back(item);
|
|
frameAvailableListener = mCore->mConsumerListener;
|
|
} else {
|
|
// When the queue is not empty, we need to look at the front buffer
|
|
// state to see if we need to replace it
|
|
BufferQueueCore::Fifo::iterator front(mCore->mQueue.begin());
|
|
if (front->mIsDroppable) {
|
|
// If the front queued buffer is still being tracked, we first
|
|
// mark it as freed
|
|
if (mCore->stillTracking(front)) {
|
|
mSlots[front->mSlot].mBufferState = BufferSlot::FREE;
|
|
// Reset the frame number of the freed buffer so that it is
|
|
// the first in line to be dequeued again
|
|
mSlots[front->mSlot].mFrameNumber = 0;
|
|
}
|
|
// Overwrite the droppable buffer with the incoming one
|
|
*front = item;
|
|
frameReplacedListener = mCore->mConsumerListener;
|
|
} else {
|
|
mCore->mQueue.push_back(item);
|
|
frameAvailableListener = mCore->mConsumerListener;
|
|
}
|
|
}
|
|
|
|
mCore->mBufferHasBeenQueued = true;
|
|
mCore->mDequeueCondition.broadcast();
|
|
|
|
output->inflate(mCore->mDefaultWidth, mCore->mDefaultHeight,
|
|
mCore->mTransformHint, mCore->mQueue.size());
|
|
|
|
ATRACE_INT(mCore->mConsumerName.string(), mCore->mQueue.size());
|
|
|
|
// Take a ticket for the callback functions
|
|
callbackTicket = mNextCallbackTicket++;
|
|
} // Autolock scope
|
|
|
|
// Wait without lock held
|
|
if (mCore->mConnectedApi == NATIVE_WINDOW_API_EGL) {
|
|
// Waiting here allows for two full buffers to be queued but not a
|
|
// third. In the event that frames take varying time, this makes a
|
|
// small trade-off in favor of latency rather than throughput.
|
|
mLastQueueBufferFence->waitForever("Throttling EGL Production");
|
|
mLastQueueBufferFence = fence;
|
|
}
|
|
|
|
// Don't send the GraphicBuffer through the callback, and don't send
|
|
// the slot number, since the consumer shouldn't need it
|
|
item.mGraphicBuffer.clear();
|
|
item.mSlot = BufferItem::INVALID_BUFFER_SLOT;
|
|
|
|
// Call back without the main BufferQueue lock held, but with the callback
|
|
// lock held so we can ensure that callbacks occur in order
|
|
{
|
|
Mutex::Autolock lock(mCallbackMutex);
|
|
while (callbackTicket != mCurrentCallbackTicket) {
|
|
mCallbackCondition.wait(mCallbackMutex);
|
|
}
|
|
|
|
if (frameAvailableListener != NULL) {
|
|
frameAvailableListener->onFrameAvailable(item);
|
|
} else if (frameReplacedListener != NULL) {
|
|
frameReplacedListener->onFrameReplaced(item);
|
|
}
|
|
|
|
++mCurrentCallbackTicket;
|
|
mCallbackCondition.broadcast();
|
|
}
|
|
|
|
return NO_ERROR;
|
|
}
|
|
|
|
void BufferQueueProducer::cancelBuffer(int slot, const sp<Fence>& fence) {
|
|
ATRACE_CALL();
|
|
BQ_LOGV("cancelBuffer: slot %d", slot);
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
|
|
if (mCore->mIsAbandoned) {
|
|
BQ_LOGE("cancelBuffer: BufferQueue has been abandoned");
|
|
return;
|
|
}
|
|
|
|
if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) {
|
|
BQ_LOGE("cancelBuffer: slot index %d out of range [0, %d)",
|
|
slot, BufferQueueDefs::NUM_BUFFER_SLOTS);
|
|
return;
|
|
} else if (mSlots[slot].mBufferState != BufferSlot::DEQUEUED) {
|
|
BQ_LOGE("cancelBuffer: slot %d is not owned by the producer "
|
|
"(state = %d)", slot, mSlots[slot].mBufferState);
|
|
return;
|
|
} else if (fence == NULL) {
|
|
BQ_LOGE("cancelBuffer: fence is NULL");
|
|
return;
|
|
}
|
|
|
|
mSlots[slot].mBufferState = BufferSlot::FREE;
|
|
mSlots[slot].mFrameNumber = 0;
|
|
mSlots[slot].mFence = fence;
|
|
mCore->mDequeueCondition.broadcast();
|
|
}
|
|
|
|
int BufferQueueProducer::query(int what, int *outValue) {
|
|
ATRACE_CALL();
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
|
|
if (outValue == NULL) {
|
|
BQ_LOGE("query: outValue was NULL");
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
if (mCore->mIsAbandoned) {
|
|
BQ_LOGE("query: BufferQueue has been abandoned");
|
|
return NO_INIT;
|
|
}
|
|
|
|
int value;
|
|
switch (what) {
|
|
case NATIVE_WINDOW_WIDTH:
|
|
value = mCore->mDefaultWidth;
|
|
break;
|
|
case NATIVE_WINDOW_HEIGHT:
|
|
value = mCore->mDefaultHeight;
|
|
break;
|
|
case NATIVE_WINDOW_FORMAT:
|
|
value = mCore->mDefaultBufferFormat;
|
|
break;
|
|
case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
|
|
value = mCore->getMinUndequeuedBufferCountLocked(false);
|
|
break;
|
|
case NATIVE_WINDOW_STICKY_TRANSFORM:
|
|
value = static_cast<int>(mStickyTransform);
|
|
break;
|
|
case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND:
|
|
value = (mCore->mQueue.size() > 1);
|
|
break;
|
|
case NATIVE_WINDOW_CONSUMER_USAGE_BITS:
|
|
value = mCore->mConsumerUsageBits;
|
|
break;
|
|
default:
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
BQ_LOGV("query: %d? %d", what, value);
|
|
*outValue = value;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t BufferQueueProducer::connect(const sp<IProducerListener>& listener,
|
|
int api, bool producerControlledByApp, QueueBufferOutput *output) {
|
|
ATRACE_CALL();
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
mConsumerName = mCore->mConsumerName;
|
|
BQ_LOGV("connect(P): api=%d producerControlledByApp=%s", api,
|
|
producerControlledByApp ? "true" : "false");
|
|
|
|
if (mCore->mIsAbandoned) {
|
|
BQ_LOGE("connect(P): BufferQueue has been abandoned");
|
|
return NO_INIT;
|
|
}
|
|
|
|
if (mCore->mConsumerListener == NULL) {
|
|
BQ_LOGE("connect(P): BufferQueue has no consumer");
|
|
return NO_INIT;
|
|
}
|
|
|
|
if (output == NULL) {
|
|
BQ_LOGE("connect(P): output was NULL");
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
if (mCore->mConnectedApi != BufferQueueCore::NO_CONNECTED_API) {
|
|
BQ_LOGE("connect(P): already connected (cur=%d req=%d)",
|
|
mCore->mConnectedApi, api);
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
int status = NO_ERROR;
|
|
switch (api) {
|
|
case NATIVE_WINDOW_API_EGL:
|
|
case NATIVE_WINDOW_API_CPU:
|
|
case NATIVE_WINDOW_API_MEDIA:
|
|
case NATIVE_WINDOW_API_CAMERA:
|
|
mCore->mConnectedApi = api;
|
|
output->inflate(mCore->mDefaultWidth, mCore->mDefaultHeight,
|
|
mCore->mTransformHint, mCore->mQueue.size());
|
|
|
|
// Set up a death notification so that we can disconnect
|
|
// automatically if the remote producer dies
|
|
if (listener != NULL &&
|
|
IInterface::asBinder(listener)->remoteBinder() != NULL) {
|
|
status = IInterface::asBinder(listener)->linkToDeath(
|
|
static_cast<IBinder::DeathRecipient*>(this));
|
|
if (status != NO_ERROR) {
|
|
BQ_LOGE("connect(P): linkToDeath failed: %s (%d)",
|
|
strerror(-status), status);
|
|
}
|
|
}
|
|
mCore->mConnectedProducerListener = listener;
|
|
break;
|
|
default:
|
|
BQ_LOGE("connect(P): unknown API %d", api);
|
|
status = BAD_VALUE;
|
|
break;
|
|
}
|
|
|
|
mCore->mBufferHasBeenQueued = false;
|
|
mCore->mDequeueBufferCannotBlock =
|
|
mCore->mConsumerControlledByApp && producerControlledByApp;
|
|
|
|
return status;
|
|
}
|
|
|
|
status_t BufferQueueProducer::disconnect(int api) {
|
|
ATRACE_CALL();
|
|
BQ_LOGV("disconnect(P): api %d", api);
|
|
|
|
int status = NO_ERROR;
|
|
sp<IConsumerListener> listener;
|
|
{ // Autolock scope
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
mCore->waitWhileAllocatingLocked();
|
|
|
|
if (mCore->mIsAbandoned) {
|
|
// It's not really an error to disconnect after the surface has
|
|
// been abandoned; it should just be a no-op.
|
|
return NO_ERROR;
|
|
}
|
|
|
|
switch (api) {
|
|
case NATIVE_WINDOW_API_EGL:
|
|
case NATIVE_WINDOW_API_CPU:
|
|
case NATIVE_WINDOW_API_MEDIA:
|
|
case NATIVE_WINDOW_API_CAMERA:
|
|
if (mCore->mConnectedApi == api) {
|
|
mCore->freeAllBuffersLocked();
|
|
|
|
// Remove our death notification callback if we have one
|
|
if (mCore->mConnectedProducerListener != NULL) {
|
|
sp<IBinder> token =
|
|
IInterface::asBinder(mCore->mConnectedProducerListener);
|
|
// This can fail if we're here because of the death
|
|
// notification, but we just ignore it
|
|
token->unlinkToDeath(
|
|
static_cast<IBinder::DeathRecipient*>(this));
|
|
}
|
|
mCore->mConnectedProducerListener = NULL;
|
|
mCore->mConnectedApi = BufferQueueCore::NO_CONNECTED_API;
|
|
mCore->mSidebandStream.clear();
|
|
mCore->mDequeueCondition.broadcast();
|
|
listener = mCore->mConsumerListener;
|
|
} else {
|
|
BQ_LOGE("disconnect(P): connected to another API "
|
|
"(cur=%d req=%d)", mCore->mConnectedApi, api);
|
|
status = BAD_VALUE;
|
|
}
|
|
break;
|
|
default:
|
|
BQ_LOGE("disconnect(P): unknown API %d", api);
|
|
status = BAD_VALUE;
|
|
break;
|
|
}
|
|
} // Autolock scope
|
|
|
|
// Call back without lock held
|
|
if (listener != NULL) {
|
|
listener->onBuffersReleased();
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
status_t BufferQueueProducer::setSidebandStream(const sp<NativeHandle>& stream) {
|
|
sp<IConsumerListener> listener;
|
|
{ // Autolock scope
|
|
Mutex::Autolock _l(mCore->mMutex);
|
|
mCore->mSidebandStream = stream;
|
|
listener = mCore->mConsumerListener;
|
|
} // Autolock scope
|
|
|
|
if (listener != NULL) {
|
|
listener->onSidebandStreamChanged();
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
void BufferQueueProducer::allocateBuffers(bool async, uint32_t width,
|
|
uint32_t height, uint32_t format, uint32_t usage) {
|
|
ATRACE_CALL();
|
|
while (true) {
|
|
Vector<int> freeSlots;
|
|
size_t newBufferCount = 0;
|
|
uint32_t allocWidth = 0;
|
|
uint32_t allocHeight = 0;
|
|
uint32_t allocFormat = 0;
|
|
uint32_t allocUsage = 0;
|
|
{ // Autolock scope
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
mCore->waitWhileAllocatingLocked();
|
|
|
|
int currentBufferCount = 0;
|
|
for (int slot = 0; slot < BufferQueueDefs::NUM_BUFFER_SLOTS; ++slot) {
|
|
if (mSlots[slot].mGraphicBuffer != NULL) {
|
|
++currentBufferCount;
|
|
} else {
|
|
if (mSlots[slot].mBufferState != BufferSlot::FREE) {
|
|
BQ_LOGE("allocateBuffers: slot %d without buffer is not FREE",
|
|
slot);
|
|
continue;
|
|
}
|
|
|
|
freeSlots.push_back(slot);
|
|
}
|
|
}
|
|
|
|
int maxBufferCount = mCore->getMaxBufferCountLocked(async);
|
|
BQ_LOGV("allocateBuffers: allocating from %d buffers up to %d buffers",
|
|
currentBufferCount, maxBufferCount);
|
|
if (maxBufferCount <= currentBufferCount)
|
|
return;
|
|
newBufferCount = maxBufferCount - currentBufferCount;
|
|
if (freeSlots.size() < newBufferCount) {
|
|
BQ_LOGE("allocateBuffers: ran out of free slots");
|
|
return;
|
|
}
|
|
allocWidth = width > 0 ? width : mCore->mDefaultWidth;
|
|
allocHeight = height > 0 ? height : mCore->mDefaultHeight;
|
|
allocFormat = format != 0 ? format : mCore->mDefaultBufferFormat;
|
|
allocUsage = usage | mCore->mConsumerUsageBits;
|
|
|
|
mCore->mIsAllocating = true;
|
|
} // Autolock scope
|
|
|
|
Vector<sp<GraphicBuffer> > buffers;
|
|
for (size_t i = 0; i < newBufferCount; ++i) {
|
|
status_t result = NO_ERROR;
|
|
sp<GraphicBuffer> graphicBuffer(mCore->mAllocator->createGraphicBuffer(
|
|
allocWidth, allocHeight, allocFormat, allocUsage, &result));
|
|
if (result != NO_ERROR) {
|
|
BQ_LOGE("allocateBuffers: failed to allocate buffer (%u x %u, format"
|
|
" %u, usage %u)", width, height, format, usage);
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
mCore->mIsAllocating = false;
|
|
mCore->mIsAllocatingCondition.broadcast();
|
|
return;
|
|
}
|
|
buffers.push_back(graphicBuffer);
|
|
}
|
|
|
|
{ // Autolock scope
|
|
Mutex::Autolock lock(mCore->mMutex);
|
|
uint32_t checkWidth = width > 0 ? width : mCore->mDefaultWidth;
|
|
uint32_t checkHeight = height > 0 ? height : mCore->mDefaultHeight;
|
|
uint32_t checkFormat = format != 0 ? format : mCore->mDefaultBufferFormat;
|
|
uint32_t checkUsage = usage | mCore->mConsumerUsageBits;
|
|
if (checkWidth != allocWidth || checkHeight != allocHeight ||
|
|
checkFormat != allocFormat || checkUsage != allocUsage) {
|
|
// Something changed while we released the lock. Retry.
|
|
BQ_LOGV("allocateBuffers: size/format/usage changed while allocating. Retrying.");
|
|
mCore->mIsAllocating = false;
|
|
mCore->mIsAllocatingCondition.broadcast();
|
|
continue;
|
|
}
|
|
|
|
for (size_t i = 0; i < newBufferCount; ++i) {
|
|
int slot = freeSlots[i];
|
|
if (mSlots[slot].mBufferState != BufferSlot::FREE) {
|
|
// A consumer allocated the FREE slot with attachBuffer. Discard the buffer we
|
|
// allocated.
|
|
BQ_LOGV("allocateBuffers: slot %d was acquired while allocating. "
|
|
"Dropping allocated buffer.", slot);
|
|
continue;
|
|
}
|
|
mCore->freeBufferLocked(slot); // Clean up the slot first
|
|
mSlots[slot].mGraphicBuffer = buffers[i];
|
|
mSlots[slot].mFrameNumber = 0;
|
|
mSlots[slot].mFence = Fence::NO_FENCE;
|
|
BQ_LOGV("allocateBuffers: allocated a new buffer in slot %d", slot);
|
|
}
|
|
|
|
mCore->mIsAllocating = false;
|
|
mCore->mIsAllocatingCondition.broadcast();
|
|
} // Autolock scope
|
|
}
|
|
}
|
|
|
|
void BufferQueueProducer::binderDied(const wp<android::IBinder>& /* who */) {
|
|
// If we're here, it means that a producer we were connected to died.
|
|
// We're guaranteed that we are still connected to it because we remove
|
|
// this callback upon disconnect. It's therefore safe to read mConnectedApi
|
|
// without synchronization here.
|
|
int api = mCore->mConnectedApi;
|
|
disconnect(api);
|
|
}
|
|
|
|
} // namespace android
|