diff options
Diffstat (limited to 'widget/gonk/nativewindow/GonkBufferQueueKK.cpp')
| -rw-r--r-- | widget/gonk/nativewindow/GonkBufferQueueKK.cpp | 1265 |
1 files changed, 1265 insertions, 0 deletions
diff --git a/widget/gonk/nativewindow/GonkBufferQueueKK.cpp b/widget/gonk/nativewindow/GonkBufferQueueKK.cpp new file mode 100644 index 000000000..0c5cdfeb9 --- /dev/null +++ b/widget/gonk/nativewindow/GonkBufferQueueKK.cpp @@ -0,0 +1,1265 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * Copyright (C) 2012 The Android Open Source Project + * Copyright (C) 2013 Mozilla Foundation + * + * 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. + */ + +#define LOG_TAG "GonkBufferQueue" +#define ATRACE_TAG ATRACE_TAG_GRAPHICS +//#define LOG_NDEBUG 0 + +#define GL_GLEXT_PROTOTYPES +#define EGL_EGLEXT_PROTOTYPES + +#include <utils/Log.h> +#include <utils/Trace.h> +#include <utils/CallStack.h> +#include <cutils/compiler.h> + +#include "mozilla/layers/GrallocTextureClient.h" +#include "mozilla/layers/ImageBridgeChild.h" +#include "GonkBufferQueueKK.h" + +#define ATRACE_BUFFER_INDEX(index) + +using namespace mozilla; +using namespace mozilla::gfx; +using namespace mozilla::layers; + +namespace android { + +// Get an ID that's unique within this process. +static int32_t createProcessUniqueId() { + static volatile int32_t globalCounter = 0; + return android_atomic_inc(&globalCounter); +} + +static const char* scalingModeName(int scalingMode) { + switch (scalingMode) { + case NATIVE_WINDOW_SCALING_MODE_FREEZE: return "FREEZE"; + case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW: return "SCALE_TO_WINDOW"; + case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP: return "SCALE_CROP"; + default: return "Unknown"; + } +} + +GonkBufferQueue::GonkBufferQueue(bool allowSynchronousMode, + const sp<IGraphicBufferAlloc>& allocator) : + mDefaultWidth(1), + mDefaultHeight(1), + mMaxAcquiredBufferCount(1), + mDefaultMaxBufferCount(2), + mOverrideMaxBufferCount(0), + mSynchronousMode(true), + mConsumerControlledByApp(false), + mDequeueBufferCannotBlock(false), + mUseAsyncBuffer(true), + mConnectedApi(NO_CONNECTED_API), + mAbandoned(false), + mFrameCounter(0), + mBufferHasBeenQueued(false), + mDefaultBufferFormat(PIXEL_FORMAT_RGBA_8888), + mConsumerUsageBits(0), + mTransformHint(0) +{ + // Choose a name using the PID and a process-unique ID. + mConsumerName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId()); + + ALOGV("GonkBufferQueue"); +} + +GonkBufferQueue::~GonkBufferQueue() { + ALOGV("~GonkBufferQueue"); +} + +status_t GonkBufferQueue::setDefaultMaxBufferCountLocked(int count) { + if (count < 2 || count > NUM_BUFFER_SLOTS) + return BAD_VALUE; + + mDefaultMaxBufferCount = count; + mDequeueCondition.broadcast(); + + return NO_ERROR; +} + +void GonkBufferQueue::setConsumerName(const String8& name) { + Mutex::Autolock lock(mMutex); + mConsumerName = name; +} + +status_t GonkBufferQueue::setDefaultBufferFormat(uint32_t defaultFormat) { + Mutex::Autolock lock(mMutex); + mDefaultBufferFormat = defaultFormat; + return NO_ERROR; +} + +status_t GonkBufferQueue::setConsumerUsageBits(uint32_t usage) { + Mutex::Autolock lock(mMutex); + mConsumerUsageBits = usage; + return NO_ERROR; +} + +status_t GonkBufferQueue::setTransformHint(uint32_t hint) { + ALOGV("setTransformHint: %02x", hint); + Mutex::Autolock lock(mMutex); + mTransformHint = hint; + return NO_ERROR; +} + +already_AddRefed<TextureClient> +GonkBufferQueue::getTextureClientFromBuffer(ANativeWindowBuffer* buffer) +{ + Mutex::Autolock _l(mMutex); + if (buffer == NULL) { + ALOGE("getSlotFromBufferLocked: encountered NULL buffer"); + return nullptr; + } + + for (int i = 0; i < NUM_BUFFER_SLOTS; i++) { + if (mSlots[i].mGraphicBuffer != NULL && mSlots[i].mGraphicBuffer->handle == buffer->handle) { + RefPtr<TextureClient> client(mSlots[i].mTextureClient); + return client.forget(); + } + } + ALOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle); + return nullptr; +} + +int GonkBufferQueue::getSlotFromTextureClientLocked( + TextureClient* client) const +{ + if (client == NULL) { + ALOGE("getSlotFromBufferLocked: encountered NULL buffer"); + return BAD_VALUE; + } + + for (int i = 0; i < NUM_BUFFER_SLOTS; i++) { + if (mSlots[i].mTextureClient == client) { + return i; + } + } + ALOGE("getSlotFromBufferLocked: unknown TextureClient: %p", client); + return BAD_VALUE; +} + +status_t GonkBufferQueue::setBufferCount(int bufferCount) { + ALOGV("setBufferCount: count=%d", bufferCount); + + sp<IConsumerListener> listener; + { + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGE("setBufferCount: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + if (bufferCount > NUM_BUFFER_SLOTS) { + ALOGE("setBufferCount: bufferCount too large (max %d)", + NUM_BUFFER_SLOTS); + return BAD_VALUE; + } + + // Error out if the user has dequeued buffers + for (int i=0 ; i<NUM_BUFFER_SLOTS; i++) { + if (mSlots[i].mBufferState == BufferSlot::DEQUEUED) { + ALOGE("setBufferCount: client owns some buffers"); + return -EINVAL; + } + } + + if (bufferCount == 0) { + mOverrideMaxBufferCount = 0; + mDequeueCondition.broadcast(); + return NO_ERROR; + } + + // fine to assume async to false before we're setting the buffer count + const int minBufferSlots = getMinMaxBufferCountLocked(false); + if (bufferCount < minBufferSlots) { + ALOGE("setBufferCount: requested buffer count (%d) is less than " + "minimum (%d)", bufferCount, minBufferSlots); + return BAD_VALUE; + } + + // here we're guaranteed that the client doesn't have dequeued buffers + // and will release all of its buffer references. We don't clear the + // queue, however, so currently queued buffers still get displayed. + // XXX: Should this use drainQueueAndFreeBuffersLocked instead? + freeAllBuffersLocked(); + mOverrideMaxBufferCount = bufferCount; + mDequeueCondition.broadcast(); + listener = mConsumerListener; + } // scope for lock + + if (listener != NULL) { + listener->onBuffersReleased(); + } + + return NO_ERROR; +} + +int GonkBufferQueue::query(int what, int* outValue) +{ + ATRACE_CALL(); + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGE("query: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + + int value; + switch (what) { + case NATIVE_WINDOW_WIDTH: + value = mDefaultWidth; + break; + case NATIVE_WINDOW_HEIGHT: + value = mDefaultHeight; + break; + case NATIVE_WINDOW_FORMAT: + value = mDefaultBufferFormat; + break; + case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS: + value = getMinUndequeuedBufferCount(false); + break; + case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND: + value = (mQueue.size() >= 2); + break; + case NATIVE_WINDOW_CONSUMER_USAGE_BITS: + value = mConsumerUsageBits; + break; + default: + return BAD_VALUE; + } + outValue[0] = value; + return NO_ERROR; +} + +status_t GonkBufferQueue::requestBuffer(int slot, sp<GraphicBuffer>* buf) { + ATRACE_CALL(); + ALOGV("requestBuffer: slot=%d", slot); + Mutex::Autolock lock(mMutex); + if (mAbandoned) { + ALOGE("requestBuffer: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + if (slot < 0 || slot >= NUM_BUFFER_SLOTS) { + ALOGE("requestBuffer: slot index out of range [0, %d]: %d", + NUM_BUFFER_SLOTS, slot); + return BAD_VALUE; + } else if (mSlots[slot].mBufferState != BufferSlot::DEQUEUED) { + ALOGE("requestBuffer: slot %d is not owned by the client (state=%d)", + slot, mSlots[slot].mBufferState); + return BAD_VALUE; + } + mSlots[slot].mRequestBufferCalled = true; + *buf = mSlots[slot].mGraphicBuffer; + return NO_ERROR; +} + +status_t GonkBufferQueue::dequeueBuffer(int *outBuf, sp<Fence>* outFence, bool async, + uint32_t w, uint32_t h, uint32_t format, uint32_t usage) { + ATRACE_CALL(); + ALOGV("dequeueBuffer: w=%d h=%d fmt=%#x usage=%#x", w, h, format, usage); + + if ((w && !h) || (!w && h)) { + ALOGE("dequeueBuffer: invalid size: w=%u, h=%u", w, h); + return BAD_VALUE; + } + + status_t returnFlags(OK); + int buf = INVALID_BUFFER_SLOT; + + { // Scope for the lock + Mutex::Autolock lock(mMutex); + + if (format == 0) { + format = mDefaultBufferFormat; + } + // turn on usage bits the consumer requested + usage |= mConsumerUsageBits; + + int found = -1; + bool tryAgain = true; + while (tryAgain) { + if (mAbandoned) { + ALOGE("dequeueBuffer: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + + const int maxBufferCount = getMaxBufferCountLocked(async); + if (async && 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 (mOverrideMaxBufferCount < maxBufferCount) { + ALOGE("dequeueBuffer: async mode is invalid with buffercount override"); + return BAD_VALUE; + } + } + + // Free up any buffers that are in slots beyond the max buffer + // count. + //for (int i = maxBufferCount; i < NUM_BUFFER_SLOTS; i++) { + // assert(mSlots[i].mBufferState == BufferSlot::FREE); + // if (mSlots[i].mGraphicBuffer != NULL) { + // freeBufferLocked(i); + // returnFlags |= IGraphicBufferProducer::RELEASE_ALL_BUFFERS; + // } + //} + + // look for a free buffer to give to the client + found = INVALID_BUFFER_SLOT; + int dequeuedCount = 0; + int acquiredCount = 0; + for (int i = 0; i < maxBufferCount; i++) { + const int state = mSlots[i].mBufferState; + switch (state) { + case BufferSlot::DEQUEUED: + dequeuedCount++; + break; + case BufferSlot::ACQUIRED: + acquiredCount++; + break; + case BufferSlot::FREE: + /* We return the oldest of the free buffers to avoid + * stalling the producer if possible. This is because + * the consumer may still have pending reads of the + * buffers in flight. + */ + if ((found < 0) || + mSlots[i].mFrameNumber < mSlots[found].mFrameNumber) { + found = i; + } + break; + } + } + + // clients are not allowed to dequeue more than one buffer + // if they didn't set a buffer count. + if (!mOverrideMaxBufferCount && dequeuedCount) { + ALOGE("dequeueBuffer: can't dequeue multiple buffers without " + "setting the buffer count"); + return -EINVAL; + } + + // See whether a buffer has been queued since the last + // setBufferCount so we know whether to perform the min undequeued + // buffers check below. + if (mBufferHasBeenQueued) { + // make sure the client is not trying to dequeue more buffers + // than allowed. + const int newUndequeuedCount = maxBufferCount - (dequeuedCount+1); + const int minUndequeuedCount = getMinUndequeuedBufferCount(async); + if (newUndequeuedCount < minUndequeuedCount) { + ALOGE("dequeueBuffer: min undequeued buffer count (%d) " + "exceeded (dequeued=%d undequeudCount=%d)", + minUndequeuedCount, dequeuedCount, + newUndequeuedCount); + return -EBUSY; + } + } + + // If no buffer is found, wait for a buffer to be released or for + // the max buffer count to change. + tryAgain = found == INVALID_BUFFER_SLOT; + if (tryAgain) { + // return an error if we're in "cannot block" mode (producer and consumer + // are controlled by the application) -- however, the consumer is allowed + // to acquire briefly an extra buffer (which could cause us to have to wait here) + // and that's okay because we know the wait will be brief (it happens + // if we dequeue a buffer while the consumer has acquired one but not released + // the old one yet -- for e.g.: see GLConsumer::updateTexImage()). + if (mDequeueBufferCannotBlock && (acquiredCount <= mMaxAcquiredBufferCount)) { + ALOGE("dequeueBuffer: would block! returning an error instead."); + return WOULD_BLOCK; + } + mDequeueCondition.wait(mMutex); + } + } + + + if (found == INVALID_BUFFER_SLOT) { + // This should not happen. + ALOGE("dequeueBuffer: no available buffer slots"); + return -EBUSY; + } + + buf = found; + *outBuf = found; + + const bool useDefaultSize = !w && !h; + if (useDefaultSize) { + // use the default size + w = mDefaultWidth; + h = mDefaultHeight; + } + + mSlots[buf].mBufferState = BufferSlot::DEQUEUED; + + const sp<GraphicBuffer>& buffer(mSlots[buf].mGraphicBuffer); + if ((buffer == NULL) || + (uint32_t(buffer->width) != w) || + (uint32_t(buffer->height) != h) || + (uint32_t(buffer->format) != format) || + ((uint32_t(buffer->usage) & usage) != usage)) + { + mSlots[buf].mAcquireCalled = false; + mSlots[buf].mGraphicBuffer = NULL; + mSlots[buf].mRequestBufferCalled = false; + mSlots[buf].mFence = Fence::NO_FENCE; + if (mSlots[buf].mTextureClient) { + mSlots[buf].mTextureClient->ClearRecycleCallback(); + // release TextureClient in ImageBridge thread + RefPtr<TextureClientReleaseTask> task = + MakeAndAddRef<TextureClientReleaseTask>(mSlots[buf].mTextureClient); + mSlots[buf].mTextureClient = NULL; + ImageBridgeChild::GetSingleton()->GetMessageLoop()->PostTask(task.forget()); + } + returnFlags |= IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION; + } + + + if (CC_UNLIKELY(mSlots[buf].mFence == NULL)) { + ALOGE("dequeueBuffer: about to return a NULL fence from mSlot. " + "buf=%d, w=%d, h=%d, format=%d", + buf, buffer->width, buffer->height, buffer->format); + } + *outFence = mSlots[buf].mFence; + mSlots[buf].mFence = Fence::NO_FENCE; + } // end lock scope + + if (returnFlags & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) { + + RefPtr<LayersIPCChannel> allocator = ImageBridgeChild::GetSingleton(); + usage |= GraphicBuffer::USAGE_HW_TEXTURE; + GrallocTextureData* texData = GrallocTextureData::Create(IntSize(w, h), format, + gfx::BackendType::NONE, usage, + allocator); + if (!texData) { + return -ENOMEM; + } + + RefPtr<TextureClient> textureClient = new TextureClient(texData, TextureFlags::RECYCLE | TextureFlags::DEALLOCATE_CLIENT, allocator); + + { // Scope for the lock + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGE("dequeueBuffer: SurfaceTexture has been abandoned!"); + return NO_INIT; + } + + mSlots[buf].mGraphicBuffer = texData->GetGraphicBuffer(); + mSlots[buf].mTextureClient = textureClient; + ALOGD("dequeueBuffer: returning slot=%d buf=%p ", buf, + mSlots[buf].mGraphicBuffer->handle); + + } + + } + + ALOGV("dequeueBuffer: returning slot=%d/%llu buf=%p flags=%#x", *outBuf, + mSlots[*outBuf].mFrameNumber, + mSlots[*outBuf].mGraphicBuffer->handle, returnFlags); + + return returnFlags; +} + +status_t GonkBufferQueue::setSynchronousMode(bool enabled) { + ALOGV("setSynchronousMode: enabled=%d", enabled); + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGE("setSynchronousMode: BufferQueue has been abandoned!"); + return NO_INIT; + } + + if (mSynchronousMode != enabled) { + mSynchronousMode = enabled; + mDequeueCondition.broadcast(); + } + return OK; +} + +status_t GonkBufferQueue::queueBuffer(int buf, + const QueueBufferInput& input, QueueBufferOutput* output) { + ATRACE_CALL(); + + Rect crop; + uint32_t transform; + int scalingMode; + int64_t timestamp; + bool isAutoTimestamp; + bool async; + sp<Fence> fence; + + input.deflate(×tamp, &isAutoTimestamp, &crop, &scalingMode, &transform, + &async, &fence); + + if (fence == NULL) { + ALOGE("queueBuffer: fence is NULL"); + return BAD_VALUE; + } + + ALOGV("queueBuffer: slot=%d time=%#llx crop=[%d,%d,%d,%d] tr=%#x " + "scale=%s", + buf, timestamp, crop.left, crop.top, crop.right, crop.bottom, + transform, scalingModeName(scalingMode)); + + 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: + ALOGE("unknown scaling mode: %d", scalingMode); + return -EINVAL; + } + + sp<IConsumerListener> listener; + + { // scope for the lock + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGE("queueBuffer: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + + const int maxBufferCount = getMaxBufferCountLocked(async); + if (async && 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 (mOverrideMaxBufferCount < maxBufferCount) { + ALOGE("queueBuffer: async mode is invalid with buffercount override"); + return BAD_VALUE; + } + } + if (buf < 0 || buf >= maxBufferCount) { + ALOGE("queueBuffer: slot index out of range [0, %d]: %d", + maxBufferCount, buf); + return -EINVAL; + } else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) { + ALOGE("queueBuffer: slot %d is not owned by the client " + "(state=%d)", buf, mSlots[buf].mBufferState); + return -EINVAL; + } else if (!mSlots[buf].mRequestBufferCalled) { + ALOGE("queueBuffer: slot %d was enqueued without requesting a " + "buffer", buf); + return -EINVAL; + } + + ALOGV("queueBuffer: slot=%d/%llu time=%#llx crop=[%d,%d,%d,%d] " + "tr=%#x scale=%s", + buf, mFrameCounter + 1, timestamp, + crop.left, crop.top, crop.right, crop.bottom, + transform, scalingModeName(scalingMode)); + + const sp<GraphicBuffer>& graphicBuffer(mSlots[buf].mGraphicBuffer); + Rect bufferRect(graphicBuffer->getWidth(), graphicBuffer->getHeight()); + Rect croppedCrop; + crop.intersect(bufferRect, &croppedCrop); + if (croppedCrop != crop) { + ALOGE("queueBuffer: crop rect is not contained within the " + "buffer in slot %d", buf); + return -EINVAL; + } + + mSlots[buf].mFence = fence; + mSlots[buf].mBufferState = BufferSlot::QUEUED; + mFrameCounter++; + mSlots[buf].mFrameNumber = mFrameCounter; + + BufferItem item; + item.mAcquireCalled = mSlots[buf].mAcquireCalled; + item.mGraphicBuffer = mSlots[buf].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 = mFrameCounter; + item.mBuf = buf; + item.mFence = fence; + item.mIsDroppable = mDequeueBufferCannotBlock || async; + + if (mQueue.empty()) { + // when the queue is empty, we can ignore "mDequeueBufferCannotBlock", and + // simply queue this buffer. + mQueue.push_back(item); + } else { + // when the queue is not empty, we need to look at the front buffer + // state and see if we need to replace it. + Fifo::iterator front(mQueue.begin()); + if (front->mIsDroppable || !mSynchronousMode) { + // buffer slot currently queued is marked free if still tracked + if (stillTracking(front)) { + mSlots[front->mBuf].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->mBuf].mFrameNumber = 0; + } + // and we record the new buffer in the queued list + *front = item; + } else { + mQueue.push_back(item); + } + } + // always signals that an additional frame should be consumed + // to handle max acquired buffer count reached case. + listener = mConsumerListener; + + mBufferHasBeenQueued = true; + mDequeueCondition.broadcast(); + + output->inflate(mDefaultWidth, mDefaultHeight, mTransformHint, + mQueue.size()); + + } // scope for the lock + + // call back without lock held + if (listener != 0) { + listener->onFrameAvailable(); + } + return NO_ERROR; +} + +void GonkBufferQueue::cancelBuffer(int buf, const sp<Fence>& fence) { + ATRACE_CALL(); + ALOGV("cancelBuffer: slot=%d", buf); + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGW("cancelBuffer: GonkBufferQueue has been abandoned!"); + return; + } + + if (buf < 0 || buf >= NUM_BUFFER_SLOTS) { + ALOGE("cancelBuffer: slot index out of range [0, %d]: %d", + NUM_BUFFER_SLOTS, buf); + return; + } else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) { + ALOGE("cancelBuffer: slot %d is not owned by the client (state=%d)", + buf, mSlots[buf].mBufferState); + return; + } else if (fence == NULL) { + ALOGE("cancelBuffer: fence is NULL"); + return; + } + mSlots[buf].mBufferState = BufferSlot::FREE; + mSlots[buf].mFrameNumber = 0; + mSlots[buf].mFence = fence; + mDequeueCondition.broadcast(); +} + + +status_t GonkBufferQueue::connect(const sp<IBinder>& token, + int api, bool producerControlledByApp, QueueBufferOutput* output) { + ATRACE_CALL(); + ALOGV("connect: api=%d producerControlledByApp=%s", api, + producerControlledByApp ? "true" : "false"); + Mutex::Autolock lock(mMutex); + +retry: + if (mAbandoned) { + ALOGE("connect: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + + if (mConsumerListener == NULL) { + ALOGE("connect: GonkBufferQueue has no consumer!"); + return NO_INIT; + } + + if (mConnectedApi != NO_CONNECTED_API) { + ALOGE("connect: already connected (cur=%d, req=%d)", + mConnectedApi, api); + return -EINVAL; + } + + // If we disconnect and reconnect quickly, we can be in a state where our slots are + // empty but we have many buffers in the queue. This can cause us to run out of + // memory if we outrun the consumer. Wait here if it looks like we have too many + // buffers queued up. + int maxBufferCount = getMaxBufferCountLocked(false); // worst-case, i.e. largest value + if (mQueue.size() > (size_t) maxBufferCount) { + // TODO: make this bound tighter? + ALOGV("queue size is %d, waiting", mQueue.size()); + mDequeueCondition.wait(mMutex); + goto retry; + } + + int err = NO_ERROR; + switch (api) { + case NATIVE_WINDOW_API_EGL: + case NATIVE_WINDOW_API_CPU: + case NATIVE_WINDOW_API_MEDIA: + case NATIVE_WINDOW_API_CAMERA: + mConnectedApi = api; + output->inflate(mDefaultWidth, mDefaultHeight, mTransformHint, mQueue.size()); + + // set-up a death notification so that we can disconnect + // automatically when/if the remote producer dies. + if (token != NULL && token->remoteBinder() != NULL) { + status_t err = token->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)); + if (err == NO_ERROR) { + mConnectedProducerToken = token; + } else { + ALOGE("linkToDeath failed: %s (%d)", strerror(-err), err); + } + } + break; + default: + err = -EINVAL; + break; + } + + mBufferHasBeenQueued = false; + mDequeueBufferCannotBlock = mConsumerControlledByApp && producerControlledByApp; + + return err; +} + +void GonkBufferQueue::binderDied(const wp<IBinder>& who) { + // If we're here, it means that a producer we were connected to died. + // We're GUARANTEED that we still are connected to it because it has no other way + // to get disconnected -- or -- we wouldn't be here because we're removing this + // callback upon disconnect. Therefore, it's okay to read mConnectedApi without + // synchronization here. + int api = mConnectedApi; + this->disconnect(api); +} + +status_t GonkBufferQueue::disconnect(int api) { + ATRACE_CALL(); + ALOGV("disconnect: api=%d", api); + + int err = NO_ERROR; + sp<IConsumerListener> listener; + + { // Scope for the lock + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + // it is 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 (mConnectedApi == api) { + freeAllBuffersLocked(); + mConnectedApi = NO_CONNECTED_API; + mDequeueCondition.broadcast(); + listener = mConsumerListener; + } else { + ALOGE("disconnect: connected to another api (cur=%d, req=%d)", + mConnectedApi, api); + err = -EINVAL; + } + break; + default: + ALOGE("disconnect: unknown API %d", api); + err = -EINVAL; + break; + } + } + + if (listener != NULL) { + listener->onBuffersReleased(); + } + + return err; +} + +void GonkBufferQueue::dumpToString(String8& result, const char* prefix) const { + Mutex::Autolock _l(mMutex); + + String8 fifo; + int fifoSize = 0; + Fifo::const_iterator i(mQueue.begin()); + while (i != mQueue.end()) { + fifo.appendFormat("%02d:%p crop=[%d,%d,%d,%d], " + "xform=0x%02x, time=%#llx, scale=%s\n", + i->mBuf, i->mGraphicBuffer.get(), + i->mCrop.left, i->mCrop.top, i->mCrop.right, + i->mCrop.bottom, i->mTransform, i->mTimestamp, + scalingModeName(i->mScalingMode) + ); + i++; + fifoSize++; + } + + + result.appendFormat( + "%s-BufferQueue mMaxAcquiredBufferCount=%d, mDequeueBufferCannotBlock=%d, default-size=[%dx%d], " + "default-format=%d, transform-hint=%02x, FIFO(%d)={%s}\n", + prefix, mMaxAcquiredBufferCount, mDequeueBufferCannotBlock, mDefaultWidth, + mDefaultHeight, mDefaultBufferFormat, mTransformHint, + fifoSize, fifo.string()); + + struct { + const char * operator()(int state) const { + switch (state) { + case BufferSlot::DEQUEUED: return "DEQUEUED"; + case BufferSlot::QUEUED: return "QUEUED"; + case BufferSlot::FREE: return "FREE"; + case BufferSlot::ACQUIRED: return "ACQUIRED"; + default: return "Unknown"; + } + } + } stateName; + + // just trim the free buffers to not spam the dump + int maxBufferCount = 0; + for (int i=NUM_BUFFER_SLOTS-1 ; i>=0 ; i--) { + const BufferSlot& slot(mSlots[i]); + if ((slot.mBufferState != BufferSlot::FREE) || (slot.mGraphicBuffer != NULL)) { + maxBufferCount = i+1; + break; + } + } + + for (int i=0 ; i<maxBufferCount ; i++) { + const BufferSlot& slot(mSlots[i]); + const sp<GraphicBuffer>& buf(slot.mGraphicBuffer); + result.appendFormat( + "%s%s[%02d:%p] state=%-8s", + prefix, (slot.mBufferState == BufferSlot::ACQUIRED)?">":" ", i, buf.get(), + stateName(slot.mBufferState) + ); + + if (buf != NULL) { + result.appendFormat( + ", %p [%4ux%4u:%4u,%3X]", + buf->handle, buf->width, buf->height, buf->stride, + buf->format); + } + result.append("\n"); + } +} + +void GonkBufferQueue::freeAllBuffersLocked() +{ + ALOGW_IF(!mQueue.isEmpty(), + "freeAllBuffersLocked called but mQueue is not empty"); + mQueue.clear(); + mBufferHasBeenQueued = false; + for (int i = 0; i < NUM_BUFFER_SLOTS; i++) { + mSlots[i].mGraphicBuffer = 0; + if (mSlots[i].mTextureClient) { + mSlots[i].mTextureClient->ClearRecycleCallback(); + // release TextureClient in ImageBridge thread + RefPtr<TextureClientReleaseTask> task = + MakeAndAddRef<TextureClientReleaseTask>(mSlots[i].mTextureClient); + mSlots[i].mTextureClient = NULL; + ImageBridgeChild::GetSingleton()->GetMessageLoop()->PostTask(task.forget()); + } + if (mSlots[i].mBufferState == BufferSlot::ACQUIRED) { + mSlots[i].mNeedsCleanupOnRelease = true; + } + mSlots[i].mBufferState = BufferSlot::FREE; + mSlots[i].mFrameNumber = 0; + mSlots[i].mAcquireCalled = false; + // destroy fence as GonkBufferQueue now takes ownership + mSlots[i].mFence = Fence::NO_FENCE; + } +} + +status_t GonkBufferQueue::acquireBuffer(BufferItem *buffer, nsecs_t expectedPresent) { + ATRACE_CALL(); + Mutex::Autolock _l(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 i = 0; i < NUM_BUFFER_SLOTS; i++) { + if (mSlots[i].mBufferState == BufferSlot::ACQUIRED) { + numAcquiredBuffers++; + } + } + if (numAcquiredBuffers >= mMaxAcquiredBufferCount+1) { + ALOGE("acquireBuffer: max acquired buffer count reached: %d (max=%d)", + numAcquiredBuffers, mMaxAcquiredBufferCount); + return INVALID_OPERATION; + } + + // check if queue is empty + // In asynchronous mode the list is guaranteed to be one buffer + // deep, while in synchronous mode we use the oldest buffer. + if (mQueue.empty()) { + return NO_BUFFER_AVAILABLE; + } + + Fifo::iterator front(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. + if (expectedPresent != 0) { + const int MAX_REASONABLE_NSEC = 1000000000ULL; // 1 second + + // 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'll be displayed + // on time or possibly late if we show it ASAP, 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, they probably don't + // want frames to be discarded based on them. + while (mQueue.size() > 1 && !mQueue[0].mIsAutoTimestamp) { + // If entry[1] is timely, drop entry[0] (and repeat). We apply + // an additional criteria 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 criteria: don't drop the + // earlier buffer if entry[1]'s fence hasn't signaled yet. + // + // (Vector front is [0], back is [size()-1]) + const BufferItem& bi(mQueue[1]); + nsecs_t desiredPresent = bi.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 screen sooner. + ALOGV("pts nodrop: des=%lld expect=%lld (%lld) now=%lld", + desiredPresent, expectedPresent, desiredPresent - expectedPresent, + systemTime(CLOCK_MONOTONIC)); + break; + } + ALOGV("pts drop: queue1des=%lld expect=%lld size=%d", + desiredPresent, expectedPresent, mQueue.size()); + if (stillTracking(front)) { + // front buffer is still in mSlots, so mark the slot as free + mSlots[front->mBuf].mBufferState = BufferSlot::FREE; + } + mQueue.erase(front); + front = mQueue.begin(); + } + + // See if the front buffer is due. + nsecs_t desiredPresent = front->mTimestamp; + if (desiredPresent > expectedPresent && + desiredPresent < expectedPresent + MAX_REASONABLE_NSEC) { + ALOGV("pts defer: des=%lld expect=%lld (%lld) now=%lld", + desiredPresent, expectedPresent, desiredPresent - expectedPresent, + systemTime(CLOCK_MONOTONIC)); + return PRESENT_LATER; + } + + ALOGV("pts accept: des=%lld expect=%lld (%lld) now=%lld", + desiredPresent, expectedPresent, desiredPresent - expectedPresent, + systemTime(CLOCK_MONOTONIC)); + } + + int buf = front->mBuf; + buffer->mGraphicBuffer = mSlots[buf].mGraphicBuffer; + buffer->mFrameNumber = mSlots[buf].mFrameNumber; + buffer->mBuf = buf; + buffer->mFence = mSlots[buf].mFence; + ATRACE_BUFFER_INDEX(buf); + + ALOGV("acquireBuffer: acquiring { slot=%d/%llu, buffer=%p }", + front->mBuf, front->mFrameNumber, + front->mGraphicBuffer->handle); + // if front buffer still being tracked update slot state + if (stillTracking(front)) { + mSlots[buf].mAcquireCalled = true; + mSlots[buf].mNeedsCleanupOnRelease = false; + mSlots[buf].mBufferState = BufferSlot::ACQUIRED; + mSlots[buf].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 (buffer->mAcquireCalled) { + // buffer->mGraphicBuffer = NULL; + //} + + mQueue.erase(front); + mDequeueCondition.broadcast(); + + return NO_ERROR; +} + +status_t GonkBufferQueue::releaseBuffer(int buf, uint64_t frameNumber, const sp<Fence>& fence) { + ATRACE_CALL(); + + if (buf == INVALID_BUFFER_SLOT || fence == NULL) { + return BAD_VALUE; + } + + Mutex::Autolock _l(mMutex); + + // If the frame number has changed because buffer has been reallocated, + // we can ignore this releaseBuffer for the old buffer. + //if (frameNumber != mSlots[buf].mFrameNumber) { + // return STALE_BUFFER_SLOT; + //} + + + // Internal state consistency checks: + // Make sure this buffers hasn't been queued while we were owning it (acquired) + Fifo::iterator front(mQueue.begin()); + Fifo::const_iterator const end(mQueue.end()); + while (front != end) { + if (front->mBuf == buf) { + LOG_ALWAYS_FATAL("[%s] received new buffer(#%lld) on slot #%d that has not yet been " + "acquired", mConsumerName.string(), frameNumber, buf); + break; // never reached + } + front++; + } + + // The buffer can now only be released if its in the acquired state + if (mSlots[buf].mBufferState == BufferSlot::ACQUIRED) { + mSlots[buf].mFence = fence; + mSlots[buf].mBufferState = BufferSlot::FREE; + } else if (mSlots[buf].mNeedsCleanupOnRelease) { + ALOGV("releasing a stale buf %d its state was %d", buf, mSlots[buf].mBufferState); + mSlots[buf].mNeedsCleanupOnRelease = false; + return STALE_BUFFER_SLOT; + } else { + ALOGE("attempted to release buf %d but its state was %d", buf, mSlots[buf].mBufferState); + return -EINVAL; + } + + mDequeueCondition.broadcast(); + return NO_ERROR; +} + +status_t GonkBufferQueue::consumerConnect(const sp<IConsumerListener>& consumerListener, + bool controlledByApp) { + ALOGV("consumerConnect controlledByApp=%s", + controlledByApp ? "true" : "false"); + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGE("consumerConnect: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + if (consumerListener == NULL) { + ALOGE("consumerConnect: consumerListener may not be NULL"); + return BAD_VALUE; + } + + mConsumerListener = consumerListener; + mConsumerControlledByApp = controlledByApp; + + return NO_ERROR; +} + +status_t GonkBufferQueue::consumerDisconnect() { + ALOGV("consumerDisconnect"); + Mutex::Autolock lock(mMutex); + + if (mConsumerListener == NULL) { + ALOGE("consumerDisconnect: No consumer is connected!"); + return -EINVAL; + } + + mAbandoned = true; + mConsumerListener = NULL; + mQueue.clear(); + freeAllBuffersLocked(); + mDequeueCondition.broadcast(); + return NO_ERROR; +} + +status_t GonkBufferQueue::getReleasedBuffers(uint32_t* slotMask) { + ALOGV("getReleasedBuffers"); + Mutex::Autolock lock(mMutex); + + if (mAbandoned) { + ALOGE("getReleasedBuffers: GonkBufferQueue has been abandoned!"); + return NO_INIT; + } + + uint32_t mask = 0; + for (int i = 0; i < NUM_BUFFER_SLOTS; i++) { + if (!mSlots[i].mAcquireCalled) { + mask |= 1 << i; + } + } + + // Remove buffers in flight (on the queue) from the mask where acquire has + // been called, as the consumer will not receive the buffer address, so + // it should not free these slots. + Fifo::iterator front(mQueue.begin()); + while (front != mQueue.end()) { + if (front->mAcquireCalled) + mask &= ~(1 << front->mBuf); + front++; + } + + *slotMask = mask; + + ALOGV("getReleasedBuffers: returning mask %#x", mask); + return NO_ERROR; +} + +status_t GonkBufferQueue::setDefaultBufferSize(uint32_t w, uint32_t h) { + ALOGV("setDefaultBufferSize: w=%d, h=%d", w, h); + if (!w || !h) { + ALOGE("setDefaultBufferSize: dimensions cannot be 0 (w=%d, h=%d)", + w, h); + return BAD_VALUE; + } + + Mutex::Autolock lock(mMutex); + mDefaultWidth = w; + mDefaultHeight = h; + return NO_ERROR; +} + +status_t GonkBufferQueue::setDefaultMaxBufferCount(int bufferCount) { + ATRACE_CALL(); + Mutex::Autolock lock(mMutex); + return setDefaultMaxBufferCountLocked(bufferCount); +} + +status_t GonkBufferQueue::disableAsyncBuffer() { + ATRACE_CALL(); + Mutex::Autolock lock(mMutex); + if (mConsumerListener != NULL) { + ALOGE("disableAsyncBuffer: consumer already connected!"); + return INVALID_OPERATION; + } + mUseAsyncBuffer = false; + return NO_ERROR; +} + +status_t GonkBufferQueue::setMaxAcquiredBufferCount(int maxAcquiredBuffers) { + ATRACE_CALL(); + Mutex::Autolock lock(mMutex); + if (maxAcquiredBuffers < 1 || maxAcquiredBuffers > MAX_MAX_ACQUIRED_BUFFERS) { + ALOGE("setMaxAcquiredBufferCount: invalid count specified: %d", + maxAcquiredBuffers); + return BAD_VALUE; + } + if (mConnectedApi != NO_CONNECTED_API) { + return INVALID_OPERATION; + } + mMaxAcquiredBufferCount = maxAcquiredBuffers; + return NO_ERROR; +} + +int GonkBufferQueue::getMinUndequeuedBufferCount(bool async) const { + // if dequeueBuffer is allowed to error out, we don't have to + // add an extra buffer. + if (!mUseAsyncBuffer) + return mMaxAcquiredBufferCount; + + // we're in async mode, or we want to prevent the app to + // deadlock itself, we throw-in an extra buffer to guarantee it. + if (mDequeueBufferCannotBlock || async || !mSynchronousMode) + return mMaxAcquiredBufferCount + 1; + + return mMaxAcquiredBufferCount; +} + +int GonkBufferQueue::getMinMaxBufferCountLocked(bool async) const { + return getMinUndequeuedBufferCount(async) + 1; +} + +int GonkBufferQueue::getMaxBufferCountLocked(bool async) const { + int minMaxBufferCount = getMinMaxBufferCountLocked(async); + + int maxBufferCount = mDefaultMaxBufferCount; + if (maxBufferCount < minMaxBufferCount) { + maxBufferCount = minMaxBufferCount; + } + if (mOverrideMaxBufferCount != 0) { + assert(mOverrideMaxBufferCount >= minMaxBufferCount); + maxBufferCount = mOverrideMaxBufferCount; + } + + // Any buffers that are dequeued by the producer or sitting in the queue + // waiting to be consumed need to have their slots preserved. Such + // buffers will temporarily keep the max buffer count up until the slots + // no longer need to be preserved. + for (int i = maxBufferCount; i < NUM_BUFFER_SLOTS; i++) { + BufferSlot::BufferState state = mSlots[i].mBufferState; + if (state == BufferSlot::QUEUED || state == BufferSlot::DEQUEUED) { + maxBufferCount = i + 1; + } + } + + return maxBufferCount; +} + +bool GonkBufferQueue::stillTracking(const BufferItem *item) const { + const BufferSlot &slot = mSlots[item->mBuf]; + + ALOGV("stillTracking?: item: { slot=%d/%llu, buffer=%p }, " + "slot: { slot=%d/%llu, buffer=%p }", + item->mBuf, item->mFrameNumber, + (item->mGraphicBuffer.get() ? item->mGraphicBuffer->handle : 0), + item->mBuf, slot.mFrameNumber, + (slot.mGraphicBuffer.get() ? slot.mGraphicBuffer->handle : 0)); + + // Compare item with its original buffer slot. We can check the slot + // as the buffer would not be moved to a different slot by the producer. + return (slot.mGraphicBuffer != NULL && + item->mGraphicBuffer->handle == slot.mGraphicBuffer->handle); +} + +GonkBufferQueue::ProxyConsumerListener::ProxyConsumerListener( + const wp<ConsumerListener>& consumerListener): + mConsumerListener(consumerListener) {} + +GonkBufferQueue::ProxyConsumerListener::~ProxyConsumerListener() {} + +void GonkBufferQueue::ProxyConsumerListener::onFrameAvailable() { + sp<ConsumerListener> listener(mConsumerListener.promote()); + if (listener != NULL) { + listener->onFrameAvailable(); + } +} + +void GonkBufferQueue::ProxyConsumerListener::onBuffersReleased() { + sp<ConsumerListener> listener(mConsumerListener.promote()); + if (listener != NULL) { + listener->onBuffersReleased(); + } +} + +}; // namespace android |