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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 <gui/CpuConsumer.h>
#include <gui/BufferItem.h>
#include <utils/Log.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(const sp<IGraphicBufferConsumer>& bq,
size_t maxLockedBuffers, bool controlledByApp) :
ConsumerBase(bq, controlledByApp),
mMaxLockedBuffers(maxLockedBuffers),
mCurrentLockedBuffers(0)
{
// Create tracking entries for locked buffers
mAcquiredBuffers.insertAt(0, maxLockedBuffers);
mConsumer->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
mConsumer->setMaxAcquiredBufferCount(static_cast<int32_t>(maxLockedBuffers));
}
size_t CpuConsumer::findAcquiredBufferLocked(uintptr_t id) const {
for (size_t i = 0; i < mMaxLockedBuffers; i++) {
const auto& ab = mAcquiredBuffers[i];
// note that this finds AcquiredBuffer::kUnusedId as well
if (ab.mLockedBufferId == id) {
return i;
}
}
return mMaxLockedBuffers; // an invalid index
}
static uintptr_t getLockedBufferId(const CpuConsumer::LockedBuffer& buffer) {
return reinterpret_cast<uintptr_t>(buffer.data);
}
static bool isPossiblyYUV(PixelFormat format) {
switch (static_cast<int>(format)) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_RGBA_FP16:
case HAL_PIXEL_FORMAT_RGBA_1010102:
case HAL_PIXEL_FORMAT_RGB_888:
case HAL_PIXEL_FORMAT_RGB_565:
case HAL_PIXEL_FORMAT_BGRA_8888:
case HAL_PIXEL_FORMAT_Y8:
case HAL_PIXEL_FORMAT_Y16:
case HAL_PIXEL_FORMAT_RAW16:
case HAL_PIXEL_FORMAT_RAW10:
case HAL_PIXEL_FORMAT_RAW_OPAQUE:
case HAL_PIXEL_FORMAT_BLOB:
case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
return false;
case HAL_PIXEL_FORMAT_YV12:
case HAL_PIXEL_FORMAT_YCbCr_420_888:
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
case HAL_PIXEL_FORMAT_YCbCr_422_I:
default:
return true;
}
}
status_t CpuConsumer::lockBufferItem(const BufferItem& item, LockedBuffer* outBuffer) const {
android_ycbcr ycbcr = android_ycbcr();
PixelFormat format = item.mGraphicBuffer->getPixelFormat();
PixelFormat flexFormat = format;
if (isPossiblyYUV(format)) {
int fenceFd = item.mFence.get() ? item.mFence->dup() : -1;
status_t err = item.mGraphicBuffer->lockAsyncYCbCr(GraphicBuffer::USAGE_SW_READ_OFTEN,
item.mCrop, &ycbcr, fenceFd);
if (err == OK) {
flexFormat = HAL_PIXEL_FORMAT_YCbCr_420_888;
if (format != HAL_PIXEL_FORMAT_YCbCr_420_888) {
CC_LOGV("locking buffer of format %#x as flex YUV", format);
}
} else if (format == HAL_PIXEL_FORMAT_YCbCr_420_888) {
CC_LOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)", strerror(-err), err);
return err;
}
}
if (ycbcr.y != nullptr) {
outBuffer->data = reinterpret_cast<uint8_t*>(ycbcr.y);
outBuffer->stride = static_cast<uint32_t>(ycbcr.ystride);
outBuffer->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
outBuffer->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
outBuffer->chromaStride = static_cast<uint32_t>(ycbcr.cstride);
outBuffer->chromaStep = static_cast<uint32_t>(ycbcr.chroma_step);
} else {
// not flexible YUV; try lockAsync
void* bufferPointer = nullptr;
int fenceFd = item.mFence.get() ? item.mFence->dup() : -1;
status_t err = item.mGraphicBuffer->lockAsync(GraphicBuffer::USAGE_SW_READ_OFTEN,
item.mCrop, &bufferPointer, fenceFd);
if (err != OK) {
CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)", strerror(-err), err);
return err;
}
outBuffer->data = reinterpret_cast<uint8_t*>(bufferPointer);
outBuffer->stride = item.mGraphicBuffer->getStride();
outBuffer->dataCb = nullptr;
outBuffer->dataCr = nullptr;
outBuffer->chromaStride = 0;
outBuffer->chromaStep = 0;
}
outBuffer->width = item.mGraphicBuffer->getWidth();
outBuffer->height = item.mGraphicBuffer->getHeight();
outBuffer->format = format;
outBuffer->flexFormat = flexFormat;
outBuffer->crop = item.mCrop;
outBuffer->transform = item.mTransform;
outBuffer->scalingMode = item.mScalingMode;
outBuffer->timestamp = item.mTimestamp;
outBuffer->dataSpace = item.mDataSpace;
outBuffer->frameNumber = item.mFrameNumber;
return OK;
}
status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
status_t err;
if (!nativeBuffer) return BAD_VALUE;
Mutex::Autolock _l(mMutex);
if (mCurrentLockedBuffers == mMaxLockedBuffers) {
CC_LOGW("Max buffers have been locked (%zd), cannot lock anymore.",
mMaxLockedBuffers);
return NOT_ENOUGH_DATA;
}
BufferItem b;
err = acquireBufferLocked(&b, 0);
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;
}
}
if (b.mGraphicBuffer == nullptr) {
b.mGraphicBuffer = mSlots[b.mSlot].mGraphicBuffer;
}
err = lockBufferItem(b, nativeBuffer);
if (err != OK) {
return err;
}
// find an unused AcquiredBuffer
size_t lockedIdx = findAcquiredBufferLocked(AcquiredBuffer::kUnusedId);
ALOG_ASSERT(lockedIdx < mMaxLockedBuffers);
AcquiredBuffer& ab = mAcquiredBuffers.editItemAt(lockedIdx);
ab.mSlot = b.mSlot;
ab.mGraphicBuffer = b.mGraphicBuffer;
ab.mLockedBufferId = getLockedBufferId(*nativeBuffer);
mCurrentLockedBuffers++;
return OK;
}
status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
Mutex::Autolock _l(mMutex);
uintptr_t id = getLockedBufferId(nativeBuffer);
size_t lockedIdx =
(id != AcquiredBuffer::kUnusedId) ? findAcquiredBufferLocked(id) : mMaxLockedBuffers;
if (lockedIdx == mMaxLockedBuffers) {
CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
return BAD_VALUE;
}
AcquiredBuffer& ab = mAcquiredBuffers.editItemAt(lockedIdx);
int fenceFd = -1;
status_t err = ab.mGraphicBuffer->unlockAsync(&fenceFd);
if (err != OK) {
CC_LOGE("%s: Unable to unlock graphic buffer %zd", __FUNCTION__,
lockedIdx);
return err;
}
sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
addReleaseFenceLocked(ab.mSlot, ab.mGraphicBuffer, fence);
releaseBufferLocked(ab.mSlot, ab.mGraphicBuffer);
ab.reset();
mCurrentLockedBuffers--;
return OK;
}
} // namespace android
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