1 /* 2 * Copyright (C) 2018 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_VERSION_MACRO_H 18 #define ANDROID_HARDWARE_VERSION_MACRO_H 19 20 #if !defined(MAJOR_VERSION) || !defined(MINOR_VERSION) 21 #error "MAJOR_VERSION and MINOR_VERSION must be defined" 22 #endif 23 24 #ifndef COMMON_TYPES_MINOR_VERSION 25 #define COMMON_TYPES_MINOR_VERSION MINOR_VERSION 26 #endif 27 28 #ifndef CORE_TYPES_MINOR_VERSION 29 #define CORE_TYPES_MINOR_VERSION MINOR_VERSION 30 #endif 31 32 /** Allows macro expansion for x and add surrounding `<>`. 33 * Is intended to be used for version dependant includes as 34 * `#include` do not macro expand if starting with < or " 35 * Example usage: 36 * #include PATH(path/to/FILE_VERSION/file) 37 * @note: uses the implementation-define "Computed Includes" feature. 38 */ 39 #define PATH(x) <x> 40 41 #define CONCAT_3(a, b, c) a##b##c 42 #define EXPAND_CONCAT_3(a, b, c) CONCAT_3(a, b, c) 43 /** The directory name of the version: <major>.<minor> */ 44 #define FILE_VERSION EXPAND_CONCAT_3(MAJOR_VERSION, ., MINOR_VERSION) 45 #define COMMON_TYPES_FILE_VERSION EXPAND_CONCAT_3(MAJOR_VERSION, ., COMMON_TYPES_MINOR_VERSION) 46 #define CORE_TYPES_FILE_VERSION EXPAND_CONCAT_3(MAJOR_VERSION, ., CORE_TYPES_MINOR_VERSION) 47 48 #define CONCAT_4(a, b, c, d) a##b##c##d 49 #define EXPAND_CONCAT_4(a, b, c, d) CONCAT_4(a, b, c, d) 50 /** The c++ namespace of the version: V<major>_<minor> */ 51 #define CPP_VERSION EXPAND_CONCAT_4(V, MAJOR_VERSION, _, MINOR_VERSION) 52 #define COMMON_TYPES_CPP_VERSION EXPAND_CONCAT_4(V, MAJOR_VERSION, _, COMMON_TYPES_MINOR_VERSION) 53 #define CORE_TYPES_CPP_VERSION EXPAND_CONCAT_4(V, MAJOR_VERSION, _, CORE_TYPES_MINOR_VERSION) 54 55 /* Gluing these file names from macros is non-trivial due to "illegal tokens" 56 occurring during expansion. The XSD and enums always use the minor version. */ 57 // clang-format off 58 #if MAJOR_VERSION >= 7 59 #if MINOR_VERSION == 0 60 #define APM_XSD_H_FILENAME android_audio_policy_configuration_V7_0.h 61 #define APM_XSD_ENUMS_H_FILENAME android_audio_policy_configuration_V7_0-enums.h 62 #elif MINOR_VERSION == 1 63 #define APM_XSD_H_FILENAME android_audio_policy_configuration_V7_1.h 64 #define APM_XSD_ENUMS_H_FILENAME android_audio_policy_configuration_V7_1-enums.h 65 #else 66 #error "Unsupported minor version" 67 #endif 68 #endif 69 // clang-format on 70 71 #endif // ANDROID_HARDWARE_VERSION_MACRO_H 72