| /* |
| * 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 "connection_header.h" |
| |
| #include <gapic/log.h> |
| #include <gapic/stream_reader.h> |
| |
| namespace gapii { |
| |
| ConnectionHeader::ConnectionHeader() |
| : mVersion(0) |
| , mObserveFrameFrequency(0) |
| , mObserveDrawFrequency(0) |
| , mFlags(0) {} |
| |
| bool ConnectionHeader::read(gapic::StreamReader* reader) { |
| if (!reader->read(mMagic)) { |
| return false; |
| } |
| if (mMagic[0] != 's' |
| || mMagic[1] != 'p' |
| || mMagic[2] != 'y' |
| || mMagic[3] != '0') { |
| GAPID_WARNING("ConnectionHeader magic was not as expected. Got %c%c%c%c", |
| mMagic[0], mMagic[1], mMagic[2], mMagic[3]); |
| return false; |
| } |
| |
| // TODO: Endian-swap data if GAPII is running on a big-endian architecture. |
| |
| if (!reader->read(mVersion)) { |
| return false; |
| } |
| |
| const int kMinSupportedVersion = 2; |
| const int kMaxSupportedVersion = 3; |
| |
| if (mVersion < kMinSupportedVersion || mVersion > kMaxSupportedVersion) { |
| GAPID_WARNING("Unsupported ConnectionHeader version %d. Only understand [%d to %d].", |
| mVersion, kMinSupportedVersion, kMaxSupportedVersion); |
| return false; |
| } |
| if (mVersion >= 2) { |
| if (!reader->read(mObserveFrameFrequency) || |
| !reader->read(mObserveDrawFrequency)) { |
| return false; |
| } |
| } |
| if (mVersion >= 3) { |
| if (!reader->read(mFlags)) { |
| return false; |
| } |
| } |
| |
| // Insert new version handling here. Don't forget to bump kMaxSupportedVersion! |
| return true; |
| } |
| |
| } // namespace gapii |