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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 {
CpuConsumer::CpuConsumer(uint32_t maxLockedBuffers) :
ConsumerBase(new BufferQueue(true) ),
mMaxLockedBuffers(maxLockedBuffers),
mCurrentLockedBuffers(0)
{
for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
mBufferPointers[i] = NULL;
}
mBufferQueue->setSynchronousMode(true);
mBufferQueue->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
mBufferQueue->setMaxAcquiredBufferCount(maxLockedBuffers);
}
CpuConsumer::~CpuConsumer() {
}
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 = acquireBufferLocked(&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.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 = mSlots[buf].mGraphicBuffer->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 = 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;
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 slotIndex = 0;
status_t err;
void *bufPtr = reinterpret_cast<void *>(nativeBuffer.data);
for (; slotIndex < BufferQueue::NUM_BUFFER_SLOTS; slotIndex++) {
if (bufPtr == mBufferPointers[slotIndex]) break;
}
if (slotIndex == BufferQueue::NUM_BUFFER_SLOTS) {
CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
return BAD_VALUE;
}
mBufferPointers[slotIndex] = NULL;
err = mSlots[slotIndex].mGraphicBuffer->unlock();
if (err != OK) {
CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__, slotIndex);
return err;
}
releaseBufferLocked(slotIndex, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
mCurrentLockedBuffers--;
return OK;
}
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__,
slotIndex);
}
mCurrentLockedBuffers--;
}
ConsumerBase::freeBufferLocked(slotIndex);
}
} // namespace android
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