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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <input/InputTransport.h>
     18 #include <input/Input.h>
     19 
     20 namespace android {
     21 
     22 #define CHECK_OFFSET(type, member, expected_offset) \
     23   static_assert((offsetof(type, member) == expected_offset), "")
     24 
     25 struct Foo {
     26   uint32_t dummy;
     27   PointerCoords coords;
     28 };
     29 
     30 void TestPointerCoordsAlignment() {
     31   CHECK_OFFSET(Foo, coords, 8);
     32 }
     33 
     34 void TestInputMessageAlignment() {
     35   CHECK_OFFSET(InputMessage, body, 8);
     36 
     37   CHECK_OFFSET(InputMessage::Body::Key, seq, 0);
     38   CHECK_OFFSET(InputMessage::Body::Key, eventTime, 8);
     39   CHECK_OFFSET(InputMessage::Body::Key, deviceId, 16);
     40   CHECK_OFFSET(InputMessage::Body::Key, source, 20);
     41   CHECK_OFFSET(InputMessage::Body::Key, action, 24);
     42   CHECK_OFFSET(InputMessage::Body::Key, flags, 28);
     43   CHECK_OFFSET(InputMessage::Body::Key, keyCode, 32);
     44   CHECK_OFFSET(InputMessage::Body::Key, scanCode, 36);
     45   CHECK_OFFSET(InputMessage::Body::Key, metaState, 40);
     46   CHECK_OFFSET(InputMessage::Body::Key, repeatCount, 44);
     47   CHECK_OFFSET(InputMessage::Body::Key, downTime, 48);
     48 
     49   CHECK_OFFSET(InputMessage::Body::Motion, seq, 0);
     50   CHECK_OFFSET(InputMessage::Body::Motion, eventTime, 8);
     51   CHECK_OFFSET(InputMessage::Body::Motion, deviceId, 16);
     52   CHECK_OFFSET(InputMessage::Body::Motion, source, 20);
     53   CHECK_OFFSET(InputMessage::Body::Motion, action, 24);
     54   CHECK_OFFSET(InputMessage::Body::Motion, actionButton, 28);
     55   CHECK_OFFSET(InputMessage::Body::Motion, flags, 32);
     56   CHECK_OFFSET(InputMessage::Body::Motion, metaState, 36);
     57   CHECK_OFFSET(InputMessage::Body::Motion, buttonState, 40);
     58   CHECK_OFFSET(InputMessage::Body::Motion, edgeFlags, 44);
     59   CHECK_OFFSET(InputMessage::Body::Motion, downTime, 48);
     60   CHECK_OFFSET(InputMessage::Body::Motion, xOffset, 56);
     61   CHECK_OFFSET(InputMessage::Body::Motion, yOffset, 60);
     62   CHECK_OFFSET(InputMessage::Body::Motion, xPrecision, 64);
     63   CHECK_OFFSET(InputMessage::Body::Motion, yPrecision, 68);
     64   CHECK_OFFSET(InputMessage::Body::Motion, pointerCount, 72);
     65   CHECK_OFFSET(InputMessage::Body::Motion, pointers, 80);
     66 }
     67 
     68 } // namespace android
     69