1 /*
2  * Copyright (C) 2022 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 #ifndef CHRE_UTIL_PIGWEED_RPC_COMMON_H_
18 #define CHRE_UTIL_PIGWEED_RPC_COMMON_H_
19 
20 #include <cstdint>
21 
22 /**
23  * @file
24  * Common definitions across nanoapp and host sides.
25  */
26 
27 namespace chre {
28 /** The upper 16b of a channel ID are set to 1 for host clients. */
29 constexpr uint32_t kChannelIdHostClient = 1 << 16;
30 
31 /** Mask to extract the host ID / nanoapp ID from a channel ID. */
32 constexpr uint32_t kRpcClientIdMask = 0xffff;
33 
34 /** Maximum ID for a nanoapp as the value is encoded on 16b. */
35 constexpr uint32_t kRpcNanoappMaxId = 0xffff;
36 
37 }  // namespace chre
38 
39 #endif  // CHRE_UTIL_PIGWEED_RPC_COMMON_H_