/*
* 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 <cutils/compiler.h>
#include <utils/Log.h>
#include <gui/BufferItem.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(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));
}
CpuConsumer::~CpuConsumer() {
// ConsumerBase destructor does all the work.
}
void CpuConsumer::setName(const String8& name) {
Mutex::Autolock _l(mMutex);
mName = name;
mConsumer->setConsumerName(name);
}
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_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::lockNextBuffer(LockedBuffer *nativeBuffer) {
status_t err;
if (!nativeBuffer) return BAD_VALUE;
if (mCurrentLockedBuffers == mMaxLockedBuffers) {
CC_LOGW("Max buffers have been locked (%zd), cannot lock anymore.",
mMaxLockedBuffers);
return NOT_ENOUGH_DATA;
}
BufferItem b;
Mutex::Autolock _l(mMutex);
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;
}
}
int buf = b.mBuf;
void *bufferPointer = NULL;
android_ycbcr ycbcr = android_ycbcr();
PixelFormat format = mSlots[buf].mGraphicBuffer->getPixelFormat();
PixelFormat flexFormat = format;
if (isPossiblyYUV(format)) {
if (b.mFence.get()) {
err = mSlots[buf].mGraphicBuffer->lockAsyncYCbCr(
GraphicBuffer::USAGE_SW_READ_OFTEN,
b.mCrop,
&ycbcr,
b.mFence->dup());
} else {
err = mSlots[buf].mGraphicBuffer->lockYCbCr(
GraphicBuffer::USAGE_SW_READ_OFTEN,
b.mCrop,
&ycbcr);
}
if (err == OK) {
bufferPointer = ycbcr.y;
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 (bufferPointer == NULL) { // not flexible YUV
if (b.mFence.get()) {
err = mSlots[buf].mGraphicBuffer->lockAsync(
GraphicBuffer::USAGE_SW_READ_OFTEN,
b.mCrop,
&bufferPointer,
b.mFence->dup());
} else {
err = mSlots[buf].mGraphicBuffer->lock(
GraphicBuffer::USAGE_SW_READ_OFTEN,
b.mCrop,
&bufferPointer);
}
if (err != OK) {
CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)",
strerror(-err), err);
return err;
}
}
size_t lockedIdx = 0;
for (; lockedIdx < static_cast<size_t>(mMaxLockedBuffers); lockedIdx++) {
if (mAcquiredBuffers[lockedIdx].mSlot ==
BufferQueue::INVALID_BUFFER_SLOT) {
break;
}
}
assert(lockedIdx < mMaxLockedBuffers);
AcquiredBuffer &ab = mAcquiredBuffers.editItemAt(lockedIdx);
ab.mSlot = buf;
ab.mBufferPointer = bufferPointer;
ab.mGraphicBuffer = mSlots[buf].mGraphicBuffer;
nativeBuffer->data =
reinterpret_cast<uint8_t*>(bufferPointer);
nativeBuffer->width = mSlots[buf].mGraphicBuffer->getWidth();
nativeBuffer->height = mSlots[buf].mGraphicBuffer->getHeight();
nativeBuffer->format = format;
nativeBuffer->flexFormat = flexFormat;
nativeBuffer->stride = (ycbcr.y != NULL) ?
static_cast<uint32_t>(ycbcr.ystride) :
mSlots[buf].mGraphicBuffer->getStride();
nativeBuffer->crop = b.mCrop;
nativeBuffer->transform = b.mTransform;
nativeBuffer->scalingMode = b.mScalingMode;
nativeBuffer->timestamp = b.mTimestamp;
nativeBuffer->dataSpace = b.mDataSpace;
nativeBuffer->frameNumber = b.mFrameNumber;
nativeBuffer->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
nativeBuffer->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
nativeBuffer->chromaStride = static_cast<uint32_t>(ycbcr.cstride);
nativeBuffer->chromaStep = static_cast<uint32_t>(ycbcr.chroma_step);
mCurrentLockedBuffers++;
return OK;
}
status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
Mutex::Autolock _l(mMutex);
size_t lockedIdx = 0;
void *bufPtr = reinterpret_cast<void *>(nativeBuffer.data);
for (; lockedIdx < static_cast<size_t>(mMaxLockedBuffers); lockedIdx++) {
if (bufPtr == mAcquiredBuffers[lockedIdx].mBufferPointer) break;
}
if (lockedIdx == mMaxLockedBuffers) {
CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
return BAD_VALUE;
}
return releaseAcquiredBufferLocked(lockedIdx);
}
status_t CpuConsumer::releaseAcquiredBufferLocked(size_t lockedIdx) {
status_t err;
int fd = -1;
err = mAcquiredBuffers[lockedIdx].mGraphicBuffer->unlockAsync(&fd);
if (err != OK) {
CC_LOGE("%s: Unable to unlock graphic buffer %zd", __FUNCTION__,
lockedIdx);
return err;
}
int buf = mAcquiredBuffers[lockedIdx].mSlot;
if (CC_LIKELY(fd != -1)) {
sp<Fence> fence(new Fence(fd));
addReleaseFenceLocked(
mAcquiredBuffers[lockedIdx].mSlot,
mSlots[buf].mGraphicBuffer,
fence);
}
// release the buffer if it hasn't already been freed by the BufferQueue.
// This can happen, for example, when the producer of this buffer
// disconnected after this buffer was acquired.
if (CC_LIKELY(mAcquiredBuffers[lockedIdx].mGraphicBuffer ==
mSlots[buf].mGraphicBuffer)) {
releaseBufferLocked(
buf, mAcquiredBuffers[lockedIdx].mGraphicBuffer,
EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
}
AcquiredBuffer &ab = mAcquiredBuffers.editItemAt(lockedIdx);
ab.mSlot = BufferQueue::INVALID_BUFFER_SLOT;
ab.mBufferPointer = NULL;
ab.mGraphicBuffer.clear();
mCurrentLockedBuffers--;
return OK;
}
void CpuConsumer::freeBufferLocked(int slotIndex) {
ConsumerBase::freeBufferLocked(slotIndex);
}
} // namespace android