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BufferQueue: Add StreamSplitter

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Adds a StreamSplitter class, that takes one IGraphicBufferConsumer
interface and multiple IGraphicBufferProducer interfaces and
implements a one-to-many broadcast of GraphicBuffers (while managing
fences correctly).

Change-Id: I38ecdf3e311ac521bc781c30dde0cc382a4376a3
This commit is contained in:
Dan Stoza 2014-03-28 15:34:33 -07:00
parent d9822a3843
commit 99b18b447d
10 changed files with 735 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/gui/IGraphicBufferConsumer.h
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@ -27,6 +27,9 @@
#include <binder/IInterface.h>
#include <ui/Rect.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
namespace android {
// ----------------------------------------------------------------------------

184
include/gui/StreamSplitter.h Normal file
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@ -0,0 +1,184 @@
/*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_GUI_STREAMSPLITTER_H
#define ANDROID_GUI_STREAMSPLITTER_H
#include <gui/IConsumerListener.h>
#include <gui/IProducerListener.h>
#include <utils/Condition.h>
#include <utils/KeyedVector.h>
#include <utils/Mutex.h>
#include <utils/StrongPointer.h>
namespace android {
class GraphicBuffer;
class IGraphicBufferConsumer;
class IGraphicBufferProducer;
// StreamSplitter is an autonomous class that manages one input BufferQueue
// and multiple output BufferQueues. By using the buffer attach and detach logic
// in BufferQueue, it is able to present the illusion of a single split
// BufferQueue, where each buffer queued to the input is available to be
// acquired by each of the outputs, and is able to be dequeued by the input
// again only once all of the outputs have released it.
class StreamSplitter : public BnConsumerListener {
public:
// createSplitter creates a new splitter, outSplitter, using inputQueue as
// the input BufferQueue. Output BufferQueues must be added using addOutput
// before queueing any buffers to the input.
//
// A return value other than NO_ERROR means that an error has occurred and
// outSplitter has not been modified. BAD_VALUE is returned if inputQueue or
// outSplitter is NULL. See IGraphicBufferConsumer::consumerConnect for
// explanations of other error codes.
static status_t createSplitter(const sp<IGraphicBufferConsumer>& inputQueue,
sp<StreamSplitter>* outSplitter);
// addOutput adds an output BufferQueue to the splitter. The splitter
// connects to outputQueue as a CPU producer, and any buffers queued
// to the input will be queued to each output. It is assumed that all of the
// outputs are added before any buffers are queued on the input. If any
// output is abandoned by its consumer, the splitter will abandon its input
// queue (see onAbandoned).
//
// A return value other than NO_ERROR means that an error has occurred and
// outputQueue has not been added to the splitter. BAD_VALUE is returned if
// outputQueue is NULL. See IGraphicBufferProducer::connect for explanations
// of other error codes.
status_t addOutput(const sp<IGraphicBufferProducer>& outputQueue);
// setName sets the consumer name of the input queue
void setName(const String8& name);
private:
// From IConsumerListener
//
// During this callback, we store some tracking information, detach the
// buffer from the input, and attach it to each of the outputs. This call
// can block if there are too many outstanding buffers. If it blocks, it
// will resume when onBufferReleasedByOutput releases a buffer back to the
// input.
virtual void onFrameAvailable();
// From IConsumerListener
// We don't care about released buffers because we detach each buffer as
// soon as we acquire it. See the comment for onBufferReleased below for
// some clarifying notes about the name.
virtual void onBuffersReleased() {}
// From IConsumerListener
// We don't care about sideband streams, since we won't be splitting them
virtual void onSidebandStreamChanged() {}
// This is the implementation of the onBufferReleased callback from
// IProducerListener. It gets called from an OutputListener (see below), and
// 'from' is which producer interface from which the callback was received.
//
// During this callback, we detach the buffer from the output queue that
// generated the callback, update our state tracking to see if this is the
// last output releasing the buffer, and if so, release it to the input.
// If we release the buffer to the input, we allow a blocked
// onFrameAvailable call to proceed.
void onBufferReleasedByOutput(const sp<IGraphicBufferProducer>& from);
// When this is called, the splitter disconnects from (i.e., abandons) its
// input queue and signals any waiting onFrameAvailable calls to wake up.
// It still processes callbacks from other outputs, but only detaches their
// buffers so they can continue operating until they run out of buffers to
// acquire. This must be called with mMutex locked.
void onAbandonedLocked();
// This is a thin wrapper class that lets us determine which BufferQueue
// the IProducerListener::onBufferReleased callback is associated with. We
// create one of these per output BufferQueue, and then pass the producer
// into onBufferReleasedByOutput above.
class OutputListener : public BnProducerListener,
public IBinder::DeathRecipient {
public:
OutputListener(const sp<StreamSplitter>& splitter,
const sp<IGraphicBufferProducer>& output);
virtual ~OutputListener();
// From IProducerListener
virtual void onBufferReleased();
// From IBinder::DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
private:
sp<StreamSplitter> mSplitter;
sp<IGraphicBufferProducer> mOutput;
};
class BufferTracker : public LightRefBase<BufferTracker> {
public:
BufferTracker(const sp<GraphicBuffer>& buffer);
const sp<GraphicBuffer>& getBuffer() const { return mBuffer; }
const sp<Fence>& getMergedFence() const { return mMergedFence; }
void mergeFence(const sp<Fence>& with);
// Returns the new value
// Only called while mMutex is held
size_t incrementReleaseCountLocked() { return ++mReleaseCount; }
private:
// Only destroy through LightRefBase
friend LightRefBase<BufferTracker>;
~BufferTracker();
// Disallow copying
BufferTracker(const BufferTracker& other);
BufferTracker& operator=(const BufferTracker& other);
sp<GraphicBuffer> mBuffer; // One instance that holds this native handle
sp<Fence> mMergedFence;
size_t mReleaseCount;
};
// Only called from createSplitter
StreamSplitter(const sp<IGraphicBufferConsumer>& inputQueue);
// Must be accessed through RefBase
virtual ~StreamSplitter();
static const int MAX_OUTSTANDING_BUFFERS = 2;
// mIsAbandoned is set to true when an output dies. Once the StreamSplitter
// has been abandoned, it will continue to detach buffers from other
// outputs, but it will disconnect from the input and not attempt to
// communicate with it further.
bool mIsAbandoned;
Mutex mMutex;
Condition mReleaseCondition;
int mOutstandingBuffers;
sp<IGraphicBufferConsumer> mInput;
Vector<sp<IGraphicBufferProducer> > mOutputs;
// Map of GraphicBuffer IDs (GraphicBuffer::getId()) to buffer tracking
// objects (which are mostly for counting how many outputs have released the
// buffer, but also contain merged release fences).
KeyedVector<uint64_t, sp<BufferTracker> > mBuffers;
};
} // namespace android
#endif

1
libs/gui/Android.mk
View File

@ -30,6 +30,7 @@ LOCAL_SRC_FILES:= \
Sensor.cpp \
SensorEventQueue.cpp \
SensorManager.cpp \
StreamSplitter.cpp \
Surface.cpp \
SurfaceControl.cpp \
SurfaceComposerClient.cpp \

18
libs/gui/BufferQueueConsumer.cpp
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@ -243,11 +243,27 @@ status_t BufferQueueConsumer::attachBuffer(int* outSlot,
mSlots[*outSlot].mGraphicBuffer = buffer;
mSlots[*outSlot].mBufferState = BufferSlot::ACQUIRED;
mSlots[*outSlot].mAttachedByConsumer = true;
mSlots[*outSlot].mAcquireCalled = true;
mSlots[*outSlot].mNeedsCleanupOnRelease = false;
mSlots[*outSlot].mFence = Fence::NO_FENCE;
mSlots[*outSlot].mFrameNumber = 0;
// mAcquireCalled tells BufferQueue that it doesn't need to send a valid
// GraphicBuffer pointer on the next acquireBuffer call, which decreases
// Binder traffic by not un/flattening the GraphicBuffer. However, it
// requires that the consumer maintain a cached copy of the slot <--> buffer
// mappings, which is why the consumer doesn't need the valid pointer on
// acquire.
//
// The StreamSplitter is one of the primary users of the attach/detach
// logic, and while it is running, all buffers it acquires are immediately
// detached, and all buffers it eventually releases are ones that were
// attached (as opposed to having been obtained from acquireBuffer), so it
// doesn't make sense to maintain the slot/buffer mappings, which would
// become invalid for every buffer during detach/attach. By setting this to
// false, the valid GraphicBuffer pointer will always be sent with acquire
// for attached buffers.
mSlots[*outSlot].mAcquireCalled = false;
return NO_ERROR;
}

2
libs/gui/BufferQueueCore.cpp
View File

@ -191,7 +191,7 @@ void BufferQueueCore::freeBufferLocked(int slot) {
mSlots[slot].mNeedsCleanupOnRelease = true;
}
mSlots[slot].mBufferState = BufferSlot::FREE;
mSlots[slot].mFrameNumber = 0;
mSlots[slot].mFrameNumber = UINT32_MAX;
mSlots[slot].mAcquireCalled = false;
// Destroy fence as BufferQueue now takes ownership

6
libs/gui/IGraphicBufferConsumer.cpp
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@ -14,12 +14,6 @@
* limitations under the License.
*/
#define EGL_EGLEXT_PROTOTYPES
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <stdint.h>
#include <sys/types.h>

281
libs/gui/StreamSplitter.cpp Normal file
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@ -0,0 +1,281 @@
/*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "StreamSplitter"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
//#define LOG_NDEBUG 0
#include <gui/IGraphicBufferConsumer.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/StreamSplitter.h>
#include <ui/GraphicBuffer.h>
#include <binder/ProcessState.h>
#include <utils/Trace.h>
namespace android {
status_t StreamSplitter::createSplitter(
const sp<IGraphicBufferConsumer>& inputQueue,
sp<StreamSplitter>* outSplitter) {
if (inputQueue == NULL) {
ALOGE("createSplitter: inputQueue must not be NULL");
return BAD_VALUE;
}
if (outSplitter == NULL) {
ALOGE("createSplitter: outSplitter must not be NULL");
return BAD_VALUE;
}
sp<StreamSplitter> splitter(new StreamSplitter(inputQueue));
status_t status = splitter->mInput->consumerConnect(splitter, false);
if (status == NO_ERROR) {
splitter->mInput->setConsumerName(String8("StreamSplitter"));
*outSplitter = splitter;
}
return status;
}
StreamSplitter::StreamSplitter(const sp<IGraphicBufferConsumer>& inputQueue)
: mIsAbandoned(false), mMutex(), mReleaseCondition(),
mOutstandingBuffers(0), mInput(inputQueue), mOutputs(), mBuffers() {}
StreamSplitter::~StreamSplitter() {
mInput->consumerDisconnect();
Vector<sp<IGraphicBufferProducer> >::iterator output = mOutputs.begin();
for (; output != mOutputs.end(); ++output) {
(*output)->disconnect(NATIVE_WINDOW_API_CPU);
}
if (mBuffers.size() > 0) {
ALOGE("%d buffers still being tracked", mBuffers.size());
}
}
status_t StreamSplitter::addOutput(
const sp<IGraphicBufferProducer>& outputQueue) {
if (outputQueue == NULL) {
ALOGE("addOutput: outputQueue must not be NULL");
return BAD_VALUE;
}
Mutex::Autolock lock(mMutex);
IGraphicBufferProducer::QueueBufferOutput queueBufferOutput;
sp<OutputListener> listener(new OutputListener(this, outputQueue));
outputQueue->asBinder()->linkToDeath(listener);
status_t status = outputQueue->connect(listener, NATIVE_WINDOW_API_CPU,
/* producerControlledByApp */ false, &queueBufferOutput);
if (status != NO_ERROR) {
ALOGE("addOutput: failed to connect (%d)", status);
return status;
}
mOutputs.push_back(outputQueue);
return NO_ERROR;
}
void StreamSplitter::setName(const String8 &name) {
Mutex::Autolock lock(mMutex);
mInput->setConsumerName(name);
}
void StreamSplitter::onFrameAvailable() {
ATRACE_CALL();
Mutex::Autolock lock(mMutex);
// The current policy is that if any one consumer is consuming buffers too
// slowly, the splitter will stall the rest of the outputs by not acquiring
// any more buffers from the input. This will cause back pressure on the
// input queue, slowing down its producer.
// If there are too many outstanding buffers, we block until a buffer is
// released back to the input in onBufferReleased
while (mOutstandingBuffers >= MAX_OUTSTANDING_BUFFERS) {
mReleaseCondition.wait(mMutex);
// If the splitter is abandoned while we are waiting, the release
// condition variable will be broadcast, and we should just return
// without attempting to do anything more (since the input queue will
// also be abandoned).
if (mIsAbandoned) {
return;
}
}
++mOutstandingBuffers;
// Acquire and detach the buffer from the input
IGraphicBufferConsumer::BufferItem bufferItem;
status_t status = mInput->acquireBuffer(&bufferItem, /* presentWhen */ 0);
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"acquiring buffer from input failed (%d)", status);
ALOGV("acquired buffer %#llx from input",
bufferItem.mGraphicBuffer->getId());
status = mInput->detachBuffer(bufferItem.mBuf);
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"detaching buffer from input failed (%d)", status);
// Initialize our reference count for this buffer
mBuffers.add(bufferItem.mGraphicBuffer->getId(),
new BufferTracker(bufferItem.mGraphicBuffer));
IGraphicBufferProducer::QueueBufferInput queueInput(
bufferItem.mTimestamp, bufferItem.mIsAutoTimestamp,
bufferItem.mCrop, bufferItem.mScalingMode,
bufferItem.mTransform, bufferItem.mIsDroppable,
bufferItem.mFence);
// Attach and queue the buffer to each of the outputs
Vector<sp<IGraphicBufferProducer> >::iterator output = mOutputs.begin();
for (; output != mOutputs.end(); ++output) {
int slot;
status = (*output)->attachBuffer(&slot, bufferItem.mGraphicBuffer);
if (status == NO_INIT) {
// If we just discovered that this output has been abandoned, note
// that, increment the release count so that we still release this
// buffer eventually, and move on to the next output
onAbandonedLocked();
mBuffers.editValueFor(bufferItem.mGraphicBuffer->getId())->
incrementReleaseCountLocked();
continue;
} else {
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"attaching buffer to output failed (%d)", status);
}
IGraphicBufferProducer::QueueBufferOutput queueOutput;
status = (*output)->queueBuffer(slot, queueInput, &queueOutput);
if (status == NO_INIT) {
// If we just discovered that this output has been abandoned, note
// that, increment the release count so that we still release this
// buffer eventually, and move on to the next output
onAbandonedLocked();
mBuffers.editValueFor(bufferItem.mGraphicBuffer->getId())->
incrementReleaseCountLocked();
continue;
} else {
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"queueing buffer to output failed (%d)", status);
}
ALOGV("queued buffer %#llx to output %p",
bufferItem.mGraphicBuffer->getId(), output->get());
}
}
void StreamSplitter::onBufferReleasedByOutput(
const sp<IGraphicBufferProducer>& from) {
ATRACE_CALL();
Mutex::Autolock lock(mMutex);
sp<GraphicBuffer> buffer;
sp<Fence> fence;
status_t status = from->detachNextBuffer(&buffer, &fence);
if (status == NO_INIT) {
// If we just discovered that this output has been abandoned, note that,
// but we can't do anything else, since buffer is invalid
onAbandonedLocked();
return;
} else {
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"detaching buffer from output failed (%d)", status);
}
ALOGV("detached buffer %#llx from output %p", buffer->getId(), from.get());
const sp<BufferTracker>& tracker = mBuffers.editValueFor(buffer->getId());
// Merge the release fence of the incoming buffer so that the fence we send
// back to the input includes all of the outputs' fences
tracker->mergeFence(fence);
// Check to see if this is the last outstanding reference to this buffer
size_t releaseCount = tracker->incrementReleaseCountLocked();
ALOGV("buffer %#llx reference count %d (of %d)", buffer->getId(),
releaseCount, mOutputs.size());
if (releaseCount < mOutputs.size()) {
return;
}
// If we've been abandoned, we can't return the buffer to the input, so just
// stop tracking it and move on
if (mIsAbandoned) {
mBuffers.removeItem(buffer->getId());
return;
}
// Attach and release the buffer back to the input
int consumerSlot;
status = mInput->attachBuffer(&consumerSlot, tracker->getBuffer());
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"attaching buffer to input failed (%d)", status);
status = mInput->releaseBuffer(consumerSlot, /* frameNumber */ 0,
EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, tracker->getMergedFence());
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"releasing buffer to input failed (%d)", status);
ALOGV("released buffer %#llx to input", buffer->getId());
// We no longer need to track the buffer once it has been returned to the
// input
mBuffers.removeItem(buffer->getId());
// Notify any waiting onFrameAvailable calls
--mOutstandingBuffers;
mReleaseCondition.signal();
}
void StreamSplitter::onAbandonedLocked() {
ALOGE("one of my outputs has abandoned me");
if (!mIsAbandoned) {
mInput->consumerDisconnect();
}
mIsAbandoned = true;
mReleaseCondition.broadcast();
}
StreamSplitter::OutputListener::OutputListener(
const sp<StreamSplitter>& splitter,
const sp<IGraphicBufferProducer>& output)
: mSplitter(splitter), mOutput(output) {}
StreamSplitter::OutputListener::~OutputListener() {}
void StreamSplitter::OutputListener::onBufferReleased() {
mSplitter->onBufferReleasedByOutput(mOutput);
}
void StreamSplitter::OutputListener::binderDied(const wp<IBinder>& /* who */) {
Mutex::Autolock lock(mSplitter->mMutex);
mSplitter->onAbandonedLocked();
}
StreamSplitter::BufferTracker::BufferTracker(const sp<GraphicBuffer>& buffer)
: mBuffer(buffer), mMergedFence(Fence::NO_FENCE), mReleaseCount(0) {}
StreamSplitter::BufferTracker::~BufferTracker() {}
void StreamSplitter::BufferTracker::mergeFence(const sp<Fence>& with) {
mMergedFence = Fence::merge(String8("StreamSplitter"), mMergedFence, with);
}
} // namespace android

1
libs/gui/tests/Android.mk
View File

@ -14,6 +14,7 @@ LOCAL_SRC_FILES := \
IGraphicBufferProducer_test.cpp \
MultiTextureConsumer_test.cpp \
SRGB_test.cpp \
StreamSplitter_test.cpp \
SurfaceTextureClient_test.cpp \
SurfaceTextureFBO_test.cpp \
SurfaceTextureGLThreadToGL_test.cpp \

2
libs/gui/tests/BufferQueue_test.cpp
View File

@ -301,7 +301,7 @@ TEST_F(BufferQueueTest, DetachAndReattachOnConsumerSide) {
ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(&newSlot, NULL));
ASSERT_EQ(OK, mConsumer->attachBuffer(&newSlot, item.mGraphicBuffer));
ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mBuf, 0, EGL_NO_DISPLAY,
ASSERT_EQ(OK, mConsumer->releaseBuffer(newSlot, 0, EGL_NO_DISPLAY,
EGL_NO_SYNC_KHR, Fence::NO_FENCE));
ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,

246
libs/gui/tests/StreamSplitter_test.cpp Normal file
View File

@ -0,0 +1,246 @@
/*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "StreamSplitter_test"
//#define LOG_NDEBUG 0
#include <gui/BufferQueue.h>
#include <gui/IConsumerListener.h>
#include <gui/ISurfaceComposer.h>
#include <gui/StreamSplitter.h>
#include <private/gui/ComposerService.h>
#include <gtest/gtest.h>
namespace android {
class StreamSplitterTest : public ::testing::Test {
protected:
StreamSplitterTest() {
const ::testing::TestInfo* const testInfo =
::testing::UnitTest::GetInstance()->current_test_info();
ALOGV("Begin test: %s.%s", testInfo->test_case_name(),
testInfo->name());
}
~StreamSplitterTest() {
const ::testing::TestInfo* const testInfo =
::testing::UnitTest::GetInstance()->current_test_info();
ALOGV("End test: %s.%s", testInfo->test_case_name(),
testInfo->name());
}
};
struct DummyListener : public BnConsumerListener {
virtual void onFrameAvailable() {}
virtual void onBuffersReleased() {}
virtual void onSidebandStreamChanged() {}
};
class CountedAllocator : public BnGraphicBufferAlloc {
public:
CountedAllocator() : mAllocCount(0) {
sp<ISurfaceComposer> composer(ComposerService::getComposerService());
mAllocator = composer->createGraphicBufferAlloc();
}
virtual ~CountedAllocator() {}
virtual sp<GraphicBuffer> createGraphicBuffer(uint32_t w, uint32_t h,
PixelFormat format, uint32_t usage, status_t* error) {
++mAllocCount;
sp<GraphicBuffer> buffer = mAllocator->createGraphicBuffer(w, h, format,
usage, error);
return buffer;
}
int getAllocCount() const { return mAllocCount; }
private:
sp<IGraphicBufferAlloc> mAllocator;
int mAllocCount;
};
TEST_F(StreamSplitterTest, OneInputOneOutput) {
sp<CountedAllocator> allocator(new CountedAllocator);
sp<IGraphicBufferProducer> inputProducer;
sp<IGraphicBufferConsumer> inputConsumer;
BufferQueue::createBufferQueue(&inputProducer, &inputConsumer, allocator);
sp<IGraphicBufferProducer> outputProducer;
sp<IGraphicBufferConsumer> outputConsumer;
BufferQueue::createBufferQueue(&outputProducer, &outputConsumer, allocator);
ASSERT_EQ(OK, outputConsumer->consumerConnect(new DummyListener, false));
sp<StreamSplitter> splitter;
status_t status = StreamSplitter::createSplitter(inputConsumer, &splitter);
ASSERT_EQ(OK, status);
ASSERT_EQ(OK, splitter->addOutput(outputProducer));
IGraphicBufferProducer::QueueBufferOutput qbOutput;
ASSERT_EQ(OK, inputProducer->connect(new DummyProducerListener,
NATIVE_WINDOW_API_CPU, false, &qbOutput));
int slot;
sp<Fence> fence;
sp<GraphicBuffer> buffer;
ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
inputProducer->dequeueBuffer(&slot, &fence, false, 0, 0, 0,
GRALLOC_USAGE_SW_WRITE_OFTEN));
ASSERT_EQ(OK, inputProducer->requestBuffer(slot, &buffer));
uint32_t* dataIn;
ASSERT_EQ(OK, buffer->lock(GraphicBuffer::USAGE_SW_WRITE_OFTEN,
reinterpret_cast<void**>(&dataIn)));
*dataIn = 0x12345678;
ASSERT_EQ(OK, buffer->unlock());
IGraphicBufferProducer::QueueBufferInput qbInput(0, false,
Rect(0, 0, 1, 1), NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, false,
Fence::NO_FENCE);
ASSERT_EQ(OK, inputProducer->queueBuffer(slot, qbInput, &qbOutput));
IGraphicBufferConsumer::BufferItem item;
ASSERT_EQ(OK, outputConsumer->acquireBuffer(&item, 0));
uint32_t* dataOut;
ASSERT_EQ(OK, item.mGraphicBuffer->lock(GraphicBuffer::USAGE_SW_READ_OFTEN,
reinterpret_cast<void**>(&dataOut)));
ASSERT_EQ(*dataOut, 0x12345678);
ASSERT_EQ(OK, item.mGraphicBuffer->unlock());
ASSERT_EQ(OK, outputConsumer->releaseBuffer(item.mBuf, item.mFrameNumber,
EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE));
ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
inputProducer->dequeueBuffer(&slot, &fence, false, 0, 0, 0,
GRALLOC_USAGE_SW_WRITE_OFTEN));
ASSERT_EQ(1, allocator->getAllocCount());
}
TEST_F(StreamSplitterTest, OneInputMultipleOutputs) {
const int NUM_OUTPUTS = 4;
sp<CountedAllocator> allocator(new CountedAllocator);
sp<IGraphicBufferProducer> inputProducer;
sp<IGraphicBufferConsumer> inputConsumer;
BufferQueue::createBufferQueue(&inputProducer, &inputConsumer, allocator);
sp<IGraphicBufferProducer> outputProducers[NUM_OUTPUTS] = {};
sp<IGraphicBufferConsumer> outputConsumers[NUM_OUTPUTS] = {};
for (int output = 0; output < NUM_OUTPUTS; ++output) {
BufferQueue::createBufferQueue(&outputProducers[output],
&outputConsumers[output], allocator);
ASSERT_EQ(OK, outputConsumers[output]->consumerConnect(
new DummyListener, false));
}
sp<StreamSplitter> splitter;
status_t status = StreamSplitter::createSplitter(inputConsumer, &splitter);
ASSERT_EQ(OK, status);
for (int output = 0; output < NUM_OUTPUTS; ++output) {
ASSERT_EQ(OK, splitter->addOutput(outputProducers[output]));
}
IGraphicBufferProducer::QueueBufferOutput qbOutput;
ASSERT_EQ(OK, inputProducer->connect(new DummyProducerListener,
NATIVE_WINDOW_API_CPU, false, &qbOutput));
int slot;
sp<Fence> fence;
sp<GraphicBuffer> buffer;
ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
inputProducer->dequeueBuffer(&slot, &fence, false, 0, 0, 0,
GRALLOC_USAGE_SW_WRITE_OFTEN));
ASSERT_EQ(OK, inputProducer->requestBuffer(slot, &buffer));
uint32_t* dataIn;
ASSERT_EQ(OK, buffer->lock(GraphicBuffer::USAGE_SW_WRITE_OFTEN,
reinterpret_cast<void**>(&dataIn)));
*dataIn = 0x12345678;
ASSERT_EQ(OK, buffer->unlock());
IGraphicBufferProducer::QueueBufferInput qbInput(0, false,
Rect(0, 0, 1, 1), NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, false,
Fence::NO_FENCE);
ASSERT_EQ(OK, inputProducer->queueBuffer(slot, qbInput, &qbOutput));
for (int output = 0; output < NUM_OUTPUTS; ++output) {
IGraphicBufferConsumer::BufferItem item;
ASSERT_EQ(OK, outputConsumers[output]->acquireBuffer(&item, 0));
uint32_t* dataOut;
ASSERT_EQ(OK, item.mGraphicBuffer->lock(GraphicBuffer::USAGE_SW_READ_OFTEN,
reinterpret_cast<void**>(&dataOut)));
ASSERT_EQ(*dataOut, 0x12345678);
ASSERT_EQ(OK, item.mGraphicBuffer->unlock());
ASSERT_EQ(OK, outputConsumers[output]->releaseBuffer(item.mBuf,
item.mFrameNumber, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR,
Fence::NO_FENCE));
}
ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
inputProducer->dequeueBuffer(&slot, &fence, false, 0, 0, 0,
GRALLOC_USAGE_SW_WRITE_OFTEN));
ASSERT_EQ(1, allocator->getAllocCount());
}
TEST_F(StreamSplitterTest, OutputAbandonment) {
sp<IGraphicBufferProducer> inputProducer;
sp<IGraphicBufferConsumer> inputConsumer;
BufferQueue::createBufferQueue(&inputProducer, &inputConsumer);
sp<IGraphicBufferProducer> outputProducer;
sp<IGraphicBufferConsumer> outputConsumer;
BufferQueue::createBufferQueue(&outputProducer, &outputConsumer);
ASSERT_EQ(OK, outputConsumer->consumerConnect(new DummyListener, false));
sp<StreamSplitter> splitter;
status_t status = StreamSplitter::createSplitter(inputConsumer, &splitter);
ASSERT_EQ(OK, status);
ASSERT_EQ(OK, splitter->addOutput(outputProducer));
IGraphicBufferProducer::QueueBufferOutput qbOutput;
ASSERT_EQ(OK, inputProducer->connect(new DummyProducerListener,
NATIVE_WINDOW_API_CPU, false, &qbOutput));
int slot;
sp<Fence> fence;
sp<GraphicBuffer> buffer;
ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
inputProducer->dequeueBuffer(&slot, &fence, false, 0, 0, 0,
GRALLOC_USAGE_SW_WRITE_OFTEN));
ASSERT_EQ(OK, inputProducer->requestBuffer(slot, &buffer));
// Abandon the output
outputConsumer->consumerDisconnect();
IGraphicBufferProducer::QueueBufferInput qbInput(0, false,
Rect(0, 0, 1, 1), NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, false,
Fence::NO_FENCE);
ASSERT_EQ(OK, inputProducer->queueBuffer(slot, qbInput, &qbOutput));
// Input should be abandoned
ASSERT_EQ(NO_INIT, inputProducer->dequeueBuffer(&slot, &fence, false, 0, 0,
0, GRALLOC_USAGE_SW_WRITE_OFTEN));
}
} // namespace android