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/*
* Copyright (C) 2012 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_NDEBUG 0
#define LOG_TAG "CpuConsumer"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <utils/Log.h>
#include <gui/CpuConsumer.h>
#define CC_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CC_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CC_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CC_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CC_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
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) :
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();
}
void CpuConsumer::setName(const String8& name) {
Mutex::Autolock _l(mMutex);
mName = name;
mBufferQueue->setConsumerName(name);
}
status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
status_t err;
if (!nativeBuffer) return BAD_VALUE;
if (mCurrentLockedBuffers == mMaxLockedBuffers) {
return INVALID_OPERATION;
}
BufferQueue::BufferItem b;
Mutex::Autolock _l(mMutex);
err = mBufferQueue->acquireBuffer(&b);
if (err != OK) {
if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
return BAD_VALUE;
} else {
CC_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
return err;
}
}
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) {
CC_LOGE("Failed to wait for fence of acquired buffer: %s (%d)",
strerror(-err), err);
return err;
}
}
err = mBufferSlot[buf]->lock(
GraphicBuffer::USAGE_SW_READ_OFTEN,
b.mCrop,
&mBufferPointers[buf]);
if (mBufferPointers[buf] != NULL && err != OK) {
CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)", strerror(-err),
err);
return err;
}
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->crop = b.mCrop;
nativeBuffer->transform = b.mTransform;
nativeBuffer->scalingMode = b.mScalingMode;
nativeBuffer->timestamp = b.mTimestamp;
nativeBuffer->frameNumber = b.mFrameNumber;
mCurrentLockedBuffers++;
return OK;
}
status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
Mutex::Autolock _l(mMutex);
int buf = 0;
status_t err;
void *bufPtr = reinterpret_cast<void *>(nativeBuffer.data);
for (; buf < BufferQueue::NUM_BUFFER_SLOTS; buf++) {
if (bufPtr == mBufferPointers[buf]) break;
}
if (buf == BufferQueue::NUM_BUFFER_SLOTS) {
CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
return BAD_VALUE;
}
mBufferPointers[buf] = NULL;
err = mBufferSlot[buf]->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);
return err;
}
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();
if (err != OK) {
CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__, buf);
}
mCurrentLockedBuffers--;
}
mBufferSlot[buf] = NULL;
return err;
}
} // namespace android
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