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CpuConsumer: inherit from ConsumerBase 

Change-Id: I55178b1d673ffa0fbc6e63ef47642c64d4d03228
This commit is contained in:
Eino-Ville Talvala 2012-08-20 15:44:40 -07:00
parent 13233e067b
commit f57e7540d4
2 changed files with 32 additions and 160 deletions
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53
include/gui/CpuConsumer.h
View File

@ -17,7 +17,7 @@
#ifndef ANDROID_GUI_CPUCONSUMER_H
#define ANDROID_GUI_CPUCONSUMER_H
#include <gui/BufferQueue.h>
#include <gui/ConsumerBase.h>
#include <ui/GraphicBuffer.h>
@ -37,19 +37,10 @@ namespace android {
* This queue is synchronous by default.
*/
class CpuConsumer: public virtual RefBase,
protected BufferQueue::ConsumerListener
class CpuConsumer: public ConsumerBase
{
public:
struct FrameAvailableListener : public virtual RefBase {
// onFrameAvailable() is called each time an additional frame becomes
// available for consumption. A new frame queued will always trigger the
// callback, whether the queue is empty or not.
//
// This is called without any lock held and can be called concurrently
// by multiple threads.
virtual void onFrameAvailable() = 0;
};
typedef ConsumerBase::FrameAvailableListener FrameAvailableListener;
struct LockedBuffer {
uint8_t *data;
@ -68,8 +59,6 @@ class CpuConsumer: public virtual RefBase,
// how many buffers can be locked for user access at the same time.
CpuConsumer(uint32_t maxLockedBuffers);
virtual ~CpuConsumer();
// set the name of the CpuConsumer that will be used to identify it in
// log messages.
void setName(const String8& name);
@ -91,50 +80,20 @@ class CpuConsumer: public virtual RefBase,
// lockNextBuffer.
status_t unlockBuffer(const LockedBuffer &nativeBuffer);
// setFrameAvailableListener sets the listener object that will be notified
// when a new frame becomes available.
void setFrameAvailableListener(const sp<FrameAvailableListener>& listener);
sp<ISurfaceTexture> getProducerInterface() const { return mBufferQueue; }
protected:
// Implementation of the BufferQueue::ConsumerListener interface. These
// calls are used to notify the CpuConsumer of asynchronous events in the
// BufferQueue.
virtual void onFrameAvailable();
virtual void onBuffersReleased();
sp<ISurfaceTexture> getProducerInterface() const { return getBufferQueue(); }
private:
// Free local buffer state
status_t freeBufferLocked(int buf);
// Maximum number of buffers that can be locked at a time
uint32_t mMaxLockedBuffers;
// mName is a string used to identify the SurfaceTexture in log messages.
// It can be set by the setName method.
String8 mName;
void freeBufferLocked(int slotIndex);
// mFrameAvailableListener is the listener object that will be called when a
// new frame becomes available. If it is not NULL it will be called from
// queueBuffer.
sp<FrameAvailableListener> mFrameAvailableListener;
// Underlying buffer queue
sp<BufferQueue> mBufferQueue;
// Array for caching buffers from the buffer queue
sp<GraphicBuffer> mBufferSlot[BufferQueue::NUM_BUFFER_SLOTS];
// Array for tracking pointers passed to the consumer, matching the
// mBufferSlot indexing
// mSlots indexing
void *mBufferPointers[BufferQueue::NUM_BUFFER_SLOTS];
// Count of currently locked buffers
uint32_t mCurrentLockedBuffers;
// mMutex is the mutex used to prevent concurrent access to the member
// variables of CpuConsumer objects. It must be locked whenever the
// member variables are accessed.
mutable Mutex mMutex;
};
} // namespace android

139
libs/gui/CpuConsumer.cpp
View File

@ -29,49 +29,18 @@
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);
}
CpuConsumer::CpuConsumer(uint32_t maxLockedBuffers) :
ConsumerBase(new BufferQueue(true, maxLockedBuffers) ),
mMaxLockedBuffers(maxLockedBuffers),
mCurrentLockedBuffers(0)
{
mName = String8::format("cc-unnamed-%d-%d", getpid(),
createProcessUniqueId());
for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
mBufferPointers[i] = NULL;
}
mBufferQueue = new BufferQueue(true);
wp<BufferQueue::ConsumerListener> listener;
sp<BufferQueue::ConsumerListener> proxy;
listener = static_cast<BufferQueue::ConsumerListener*>(this);
proxy = new BufferQueue::ProxyConsumerListener(listener);
status_t err = mBufferQueue->consumerConnect(proxy);
if (err != NO_ERROR) {
ALOGE("CpuConsumer: error connecting to BufferQueue: %s (%d)",
strerror(-err), err);
} else {
mBufferQueue->setSynchronousMode(true);
mBufferQueue->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
mBufferQueue->setConsumerName(mName);
}
}
CpuConsumer::~CpuConsumer()
{
Mutex::Autolock _l(mMutex);
for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
freeBufferLocked(i);
}
mBufferQueue->consumerDisconnect();
mBufferQueue.clear();
mBufferQueue->setSynchronousMode(true);
mBufferQueue->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
}
void CpuConsumer::setName(const String8& name) {
@ -92,7 +61,7 @@ status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
Mutex::Autolock _l(mMutex);
err = mBufferQueue->acquireBuffer(&b);
err = acquireBufferLocked(&b);
if (err != OK) {
if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
return BAD_VALUE;
@ -104,16 +73,6 @@ status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
int buf = b.mBuf;
if (b.mGraphicBuffer != NULL) {
if (mBufferPointers[buf] != NULL) {
CC_LOGE("Reallocation of buffer %d while in consumer use!", buf);
mBufferQueue->releaseBuffer(buf, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR,
Fence::NO_FENCE);
return BAD_VALUE;
}
mBufferSlot[buf] = b.mGraphicBuffer;
}
if (b.mFence.get()) {
err = b.mFence->wait(Fence::TIMEOUT_NEVER);
if (err != OK) {
@ -123,7 +82,7 @@ status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
}
}
err = mBufferSlot[buf]->lock(
err = mSlots[buf].mGraphicBuffer->lock(
GraphicBuffer::USAGE_SW_READ_OFTEN,
b.mCrop,
&mBufferPointers[buf]);
@ -135,10 +94,10 @@ status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
}
nativeBuffer->data = reinterpret_cast<uint8_t*>(mBufferPointers[buf]);
nativeBuffer->width = mBufferSlot[buf]->getWidth();
nativeBuffer->height = mBufferSlot[buf]->getHeight();
nativeBuffer->format = mBufferSlot[buf]->getPixelFormat();
nativeBuffer->stride = mBufferSlot[buf]->getStride();
nativeBuffer->width = mSlots[buf].mGraphicBuffer->getWidth();
nativeBuffer->height = mSlots[buf].mGraphicBuffer->getHeight();
nativeBuffer->format = mSlots[buf].mGraphicBuffer->getPixelFormat();
nativeBuffer->stride = mSlots[buf].mGraphicBuffer->getStride();
nativeBuffer->crop = b.mCrop;
nativeBuffer->transform = b.mTransform;
@ -153,90 +112,44 @@ status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
Mutex::Autolock _l(mMutex);
int buf = 0;
int slotIndex = 0;
status_t err;
void *bufPtr = reinterpret_cast<void *>(nativeBuffer.data);
for (; buf < BufferQueue::NUM_BUFFER_SLOTS; buf++) {
if (bufPtr == mBufferPointers[buf]) break;
for (; slotIndex < BufferQueue::NUM_BUFFER_SLOTS; slotIndex++) {
if (bufPtr == mBufferPointers[slotIndex]) break;
}
if (buf == BufferQueue::NUM_BUFFER_SLOTS) {
if (slotIndex == BufferQueue::NUM_BUFFER_SLOTS) {
CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
return BAD_VALUE;
}
mBufferPointers[buf] = NULL;
err = mBufferSlot[buf]->unlock();
mBufferPointers[slotIndex] = NULL;
err = mSlots[slotIndex].mGraphicBuffer->unlock();
if (err != OK) {
CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__, buf);
return err;
}
err = mBufferQueue->releaseBuffer(buf, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR,
Fence::NO_FENCE);
if (err == BufferQueue::STALE_BUFFER_SLOT) {
freeBufferLocked(buf);
} else if (err != OK) {
CC_LOGE("%s: Unable to release graphic buffer %d to queue", __FUNCTION__,
buf);
CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__, slotIndex);
return err;
}
releaseBufferLocked(slotIndex, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE);
mCurrentLockedBuffers--;
return OK;
}
void CpuConsumer::setFrameAvailableListener(
const sp<FrameAvailableListener>& listener) {
CC_LOGV("setFrameAvailableListener");
Mutex::Autolock lock(mMutex);
mFrameAvailableListener = listener;
}
void CpuConsumer::onFrameAvailable() {
CC_LOGV("onFrameAvailable");
sp<FrameAvailableListener> listener;
{ // scope for the lock
Mutex::Autolock _l(mMutex);
listener = mFrameAvailableListener;
}
if (listener != NULL) {
CC_LOGV("actually calling onFrameAvailable");
listener->onFrameAvailable();
}
}
void CpuConsumer::onBuffersReleased() {
CC_LOGV("onBuffersReleased");
Mutex::Autolock lock(mMutex);
uint32_t mask = 0;
mBufferQueue->getReleasedBuffers(&mask);
for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
if (mask & (1 << i)) {
freeBufferLocked(i);
}
}
}
status_t CpuConsumer::freeBufferLocked(int buf) {
status_t err = OK;
if (mBufferPointers[buf] != NULL) {
CC_LOGW("Buffer %d freed while locked by consumer", buf);
mBufferPointers[buf] = NULL;
err = mBufferSlot[buf]->unlock();
void CpuConsumer::freeBufferLocked(int slotIndex) {
if (mBufferPointers[slotIndex] != NULL) {
status_t err;
CC_LOGW("Buffer %d freed while locked by consumer", slotIndex);
mBufferPointers[slotIndex] = NULL;
err = mSlots[slotIndex].mGraphicBuffer->unlock();
if (err != OK) {
CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__, buf);
CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__,
slotIndex);
}
mCurrentLockedBuffers--;
}
mBufferSlot[buf] = NULL;
return err;
ConsumerBase::freeBufferLocked(slotIndex);
}
} // namespace android