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/*
* Copyright 2014 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.
*/
#include <gui/BufferItem.h>
#include <ui/Fence.h>
#include <ui/GraphicBuffer.h>
#include <system/window.h>
namespace android {
BufferItem::BufferItem() :
mTransform(0),
mScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
mTimestamp(0),
mIsAutoTimestamp(false),
mFrameNumber(0),
mSlot(INVALID_BUFFER_SLOT),
mIsDroppable(false),
mAcquireCalled(false),
mTransformToDisplayInverse(false) {
mCrop.makeInvalid();
}
BufferItem::operator IGraphicBufferConsumer::BufferItem() const {
IGraphicBufferConsumer::BufferItem bufferItem;
bufferItem.mGraphicBuffer = mGraphicBuffer;
bufferItem.mFence = mFence;
bufferItem.mCrop = mCrop;
bufferItem.mTransform = mTransform;
bufferItem.mScalingMode = mScalingMode;
bufferItem.mTimestamp = mTimestamp;
bufferItem.mIsAutoTimestamp = mIsAutoTimestamp;
bufferItem.mFrameNumber = mFrameNumber;
bufferItem.mBuf = mSlot;
bufferItem.mIsDroppable = mIsDroppable;
bufferItem.mAcquireCalled = mAcquireCalled;
bufferItem.mTransformToDisplayInverse = mTransformToDisplayInverse;
return bufferItem;
}
size_t BufferItem::getPodSize() const {
size_t c = sizeof(mCrop) +
sizeof(mTransform) +
sizeof(mScalingMode) +
sizeof(mTimestamp) +
sizeof(mIsAutoTimestamp) +
sizeof(mFrameNumber) +
sizeof(mSlot) +
sizeof(mIsDroppable) +
sizeof(mAcquireCalled) +
sizeof(mTransformToDisplayInverse);
return c;
}
size_t BufferItem::getFlattenedSize() const {
size_t c = 0;
if (mGraphicBuffer != 0) {
c += mGraphicBuffer->getFlattenedSize();
FlattenableUtils::align<4>(c);
}
if (mFence != 0) {
c += mFence->getFlattenedSize();
FlattenableUtils::align<4>(c);
}
return sizeof(int32_t) + c + getPodSize();
}
size_t BufferItem::getFdCount() const {
size_t c = 0;
if (mGraphicBuffer != 0) {
c += mGraphicBuffer->getFdCount();
}
if (mFence != 0) {
c += mFence->getFdCount();
}
return c;
}
status_t BufferItem::flatten(
void*& buffer, size_t& size, int*& fds, size_t& count) const {
// make sure we have enough space
if (count < BufferItem::getFlattenedSize()) {
return NO_MEMORY;
}
// content flags are stored first
uint32_t& flags = *static_cast<uint32_t*>(buffer);
// advance the pointer
FlattenableUtils::advance(buffer, size, sizeof(uint32_t));
flags = 0;
if (mGraphicBuffer != 0) {
status_t err = mGraphicBuffer->flatten(buffer, size, fds, count);
if (err) return err;
size -= FlattenableUtils::align<4>(buffer);
flags |= 1;
}
if (mFence != 0) {
status_t err = mFence->flatten(buffer, size, fds, count);
if (err) return err;
size -= FlattenableUtils::align<4>(buffer);
flags |= 2;
}
// check we have enough space (in case flattening the fence/graphicbuffer lied to us)
if (size < getPodSize()) {
return NO_MEMORY;
}
FlattenableUtils::write(buffer, size, mCrop);
FlattenableUtils::write(buffer, size, mTransform);
FlattenableUtils::write(buffer, size, mScalingMode);
FlattenableUtils::write(buffer, size, mTimestamp);
FlattenableUtils::write(buffer, size, mIsAutoTimestamp);
FlattenableUtils::write(buffer, size, mFrameNumber);
FlattenableUtils::write(buffer, size, mSlot);
FlattenableUtils::write(buffer, size, mIsDroppable);
FlattenableUtils::write(buffer, size, mAcquireCalled);
FlattenableUtils::write(buffer, size, mTransformToDisplayInverse);
return NO_ERROR;
}
status_t BufferItem::unflatten(
void const*& buffer, size_t& size, int const*& fds, size_t& count) {
if (size < sizeof(uint32_t))
return NO_MEMORY;
uint32_t flags = 0;
FlattenableUtils::read(buffer, size, flags);
if (flags & 1) {
mGraphicBuffer = new GraphicBuffer();
status_t err = mGraphicBuffer->unflatten(buffer, size, fds, count);
if (err) return err;
size -= FlattenableUtils::align<4>(buffer);
}
if (flags & 2) {
mFence = new Fence();
status_t err = mFence->unflatten(buffer, size, fds, count);
if (err) return err;
size -= FlattenableUtils::align<4>(buffer);
}
// check we have enough space
if (size < getPodSize()) {
return NO_MEMORY;
}
FlattenableUtils::read(buffer, size, mCrop);
FlattenableUtils::read(buffer, size, mTransform);
FlattenableUtils::read(buffer, size, mScalingMode);
FlattenableUtils::read(buffer, size, mTimestamp);
FlattenableUtils::read(buffer, size, mIsAutoTimestamp);
FlattenableUtils::read(buffer, size, mFrameNumber);
FlattenableUtils::read(buffer, size, mSlot);
FlattenableUtils::read(buffer, size, mIsDroppable);
FlattenableUtils::read(buffer, size, mAcquireCalled);
FlattenableUtils::read(buffer, size, mTransformToDisplayInverse);
return NO_ERROR;
}
const char* BufferItem::scalingModeName(uint32_t scalingMode) {
switch (scalingMode) {
case NATIVE_WINDOW_SCALING_MODE_FREEZE: return "FREEZE";
case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW: return "SCALE_TO_WINDOW";
case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP: return "SCALE_CROP";
default: return "Unknown";
}
}
} // namespace android
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