| // Copyright (C) 2016 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 "ChannelStream.h" |
| |
| #include <assert.h> |
| |
| ChannelStream::ChannelStream(std::shared_ptr<emugl::RenderChannelImpl> channel, |
| size_t bufSize) |
| : IOStream(bufSize), mChannel(channel) { |
| mBuf.resize_noinit(bufSize); |
| } |
| |
| void* ChannelStream::allocBuffer(size_t minSize) { |
| if (mBuf.size() < minSize) { |
| mBuf.resize_noinit(minSize); |
| } |
| return mBuf.data(); |
| } |
| |
| int ChannelStream::commitBuffer(size_t size) { |
| assert(size <= mBuf.size()); |
| if (mBuf.isAllocated()) { |
| mBuf.resize(size); |
| mChannel->writeToGuest(std::move(mBuf)); |
| } else { |
| mChannel->writeToGuest( |
| emugl::ChannelBuffer(mBuf.data(), mBuf.data() + size)); |
| } |
| return size; |
| } |
| |
| const unsigned char* ChannelStream::read(void* buf, size_t* inout_len) { |
| size_t size = mChannel->readFromGuest((char*)buf, *inout_len, true); |
| if (size == 0) { |
| return nullptr; |
| } |
| *inout_len = size; |
| return (const unsigned char*)buf; |
| } |
| |
| void ChannelStream::forceStop() { |
| mChannel->stop(); |
| } |