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 ANDROID_HARDWARE_CONTEXTHUB_COMMON_HAL_CLIENT_ID_H_ 18 #define ANDROID_HARDWARE_CONTEXTHUB_COMMON_HAL_CLIENT_ID_H_ 19 20 #include <cstdint> 21 #include <limits> 22 23 namespace android::hardware::contexthub::common::implementation { 24 25 using HalClientId = uint16_t; 26 27 /** The max HAL client Id. */ 28 constexpr HalClientId kMaxHalClientId = 0x1ff; 29 30 /** Max number of HAL clients supported. */ 31 constexpr uint16_t kMaxNumOfHalClients = kMaxHalClientId - 1; 32 33 /** 34 * The HAL client id indicating the message is actually sent to the HAL itself. 35 */ 36 constexpr HalClientId kHalId = kMaxHalClientId; 37 38 } // namespace android::hardware::contexthub::common::implementation 39 40 #endif // ANDROID_HARDWARE_CONTEXTHUB_COMMON_HAL_CLIENT_ID_H_ 41