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();
}
status_t BufferItem::flatten(
void*& buffer, size_t& size, int*& fds, size_t& count) const {
// make sure we have enough space
if (size < 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;
}
status_t err = mSurfaceDamage.flatten(buffer, size);
if (err) return err;
FlattenableUtils::advance(buffer, size, mSurfaceDamage.getFlattenedSize());
// Check we still have enough space
if (size < getPodSize()) {
return NO_MEMORY;
}
writeAligned(buffer, size, mCrop);
writeAligned(buffer, size, mTransform);
writeAligned(buffer, size, mScalingMode);
writeAligned(buffer, size, mTimestampLo);
writeAligned(buffer, size, mTimestampHi);
writeAligned(buffer, size, mIsAutoTimestamp);
writeAligned(buffer, size, mDataSpace);
writeAligned(buffer, size, mFrameNumberLo);
writeAligned(buffer, size, mFrameNumberHi);
writeAligned(buffer, size, mSlot);
writeAligned(buffer, size, mIsDroppable);
writeAligned(buffer, size, mAcquireCalled);
writeAligned(buffer, size, mTransformToDisplayInverse);
return NO_ERROR;
}
status_t IGraphicBufferConsumer::BufferItem::flatten(
void*& buffer, size_t& size, int*& fds, size_t& count) const {
// make sure we have enough space
if (size < 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);
size -= FlattenableUtils::align<4>(buffer);
FlattenableUtils::write(buffer, size, mFrameNumber);
FlattenableUtils::write(buffer, size, mBuf);
FlattenableUtils::write(buffer, size, mIsDroppable);
size -= FlattenableUtils::align<4>(buffer);
FlattenableUtils::write(buffer, size, mAcquireCalled);
size -= FlattenableUtils::align<4>(buffer);
FlattenableUtils::write(buffer, size, mTransformToDisplayInverse);
size -= FlattenableUtils::align<4>(buffer);
return NO_ERROR;
}
size_t BufferItem::getFlattenedSize() const {
size_t size = sizeof(uint32_t); // Flags
if (mGraphicBuffer != 0) {
size += mGraphicBuffer->getFlattenedSize();
FlattenableUtils::align<4>(size);
}
if (mFence != 0) {
size += mFence->getFlattenedSize();
FlattenableUtils::align<4>(size);
}
size += mSurfaceDamage.getFlattenedSize();
size = FlattenableUtils::align<8>(size);
return size + getPodSize();
}
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);
}
status_t err = mSurfaceDamage.unflatten(buffer, size);
if (err) return err;
FlattenableUtils::advance(buffer, size, mSurfaceDamage.getFlattenedSize());
// Check we still have enough space
if (size < getPodSize()) {
return NO_MEMORY;
}
readAligned(buffer, size, mCrop);
readAligned(buffer, size, mTransform);
readAligned(buffer, size, mScalingMode);
readAligned(buffer, size, mTimestampLo);
readAligned(buffer, size, mTimestampHi);
readAligned(buffer, size, mIsAutoTimestamp);
readAligned(buffer, size, mDataSpace);
readAligned(buffer, size, mFrameNumberLo);
readAligned(buffer, size, mFrameNumberHi);
readAligned(buffer, size, mSlot);
readAligned(buffer, size, mIsDroppable);
readAligned(buffer, size, mAcquireCalled);
readAligned(buffer, size, mTransformToDisplayInverse);
return NO_ERROR;
}
status_t IGraphicBufferConsumer::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<uint32_t>(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);
size -= FlattenableUtils::align<4>(buffer);
FlattenableUtils::read(buffer, size, mFrameNumber);
FlattenableUtils::read(buffer, size, mBuf);
FlattenableUtils::read(buffer, size, mIsDroppable);
size -= FlattenableUtils::align<4>(buffer);
FlattenableUtils::read(buffer, size, mAcquireCalled);
size -= FlattenableUtils::align<4>(buffer);
FlattenableUtils::read(buffer, size, mTransformToDisplayInverse);
size -= FlattenableUtils::align<4>(buffer);
return NO_ERROR;
}
