1 /* 2 * Copyright (C) 2016 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_VERSION_H_ 18 #define _CHRE_VERSION_H_ 19 20 /** 21 * @file 22 * Definitions and methods for the versioning of the Context Hub Runtime 23 * Environment. 24 * 25 * The CHRE API versioning pertains to all header files in the CHRE API. 26 */ 27 28 #include <stdint.h> 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 /** 35 * Value for version 0.1 of the Context Hub Runtime Environment API interface. 36 * 37 * This is a legacy version of the CHRE API. Version 1.0 is considered the first 38 * official CHRE API version. 39 * 40 * @see CHRE_API_VERSION 41 */ 42 #define CHRE_API_VERSION_0_1 UINT32_C(0x00010000) 43 44 /** 45 * Value for version 1.0 of the Context Hub Runtime Environment API interface. 46 * 47 * This version of the CHRE API shipped with the Android Nougat release. 48 * 49 * @see CHRE_API_VERSION 50 */ 51 #define CHRE_API_VERSION_1_0 UINT32_C(0x01000000) 52 53 /** 54 * Value for version 1.1 of the Context Hub Runtime Environment API interface. 55 * 56 * This version of the CHRE API shipped with the Android O release. It adds 57 * initial support for new GNSS, WiFi, and WWAN modules. 58 * 59 * @see CHRE_API_VERSION 60 */ 61 #define CHRE_API_VERSION_1_1 UINT32_C(0x01010000) 62 63 /** 64 * Value for version 1.2 of the Context Hub Runtime Environment API interface. 65 * 66 * This version of the CHRE API shipped with the Android P release. It adds 67 * initial support for the new audio module. 68 * 69 * @see CHRE_API_VERSION 70 */ 71 #define CHRE_API_VERSION_1_2 UINT32_C(0x01020000) 72 73 /** 74 * Value for version 1.3 of the Context Hub Runtime Environment API interface. 75 * 76 * This version of the CHRE API shipped with the Android Q release. It adds 77 * support for GNSS location altitude/speed/bearing accuracy. It also adds step 78 * detect as a standard CHRE sensor and supports bias event delivery and sensor 79 * data flushing. 80 * 81 * @see CHRE_API_VERSION 82 */ 83 #define CHRE_API_VERSION_1_3 UINT32_C(0x01030000) 84 85 /** 86 * Value for version 1.4 of the Context Hub Runtime Environment API interface. 87 * 88 * This version of the CHRE API shipped with the Android R release. It adds 89 * support for collecting debug dump information from nanoapps, receiving L5 90 * GNSS measurements, determining if a sensor supports passive requests, 91 * receiving 5G cell info, and deprecates chreSendMessageToHost. 92 * 93 * @see CHRE_API_VERSION 94 */ 95 #define CHRE_API_VERSION_1_4 UINT32_C(0x01040000) 96 97 /** 98 * Value for version 1.5 of the Context Hub Runtime Environment API interface. 99 * 100 * This version of the CHRE API shipped with the Android S release. It adds 101 * support for multiple sensors of the same type, permissions for sensitive CHRE 102 * APIs / data usage, ability to receive user settings updates, step counter and 103 * hinge angle sensors, improved WiFi scan preferences to support power 104 * optimization, new WiFi security types, increased the lower bound for the 105 * maximum CHRE to host message size, and increased GNSS measurements in 106 * chreGnssDataEvent. 107 * 108 * @see CHRE_API_VERSION 109 */ 110 #define CHRE_API_VERSION_1_5 UINT32_C(0x01050000) 111 112 /** 113 * Major and Minor Version of this Context Hub Runtime Environment API. 114 * 115 * The major version changes when there is an incompatible API change. 116 * 117 * The minor version changes when there is an addition in functionality 118 * in a backwards-compatible manner. 119 * 120 * We define the version number as an unsigned 32-bit value. The most 121 * significant byte is the Major Version. The second-most significant byte 122 * is the Minor Version. The two least significant bytes are the Patch 123 * Version. The Patch Version is not defined by this header API, but 124 * is provided by a specific CHRE implementation (see chreGetVersion()). 125 * 126 * Note that version numbers can always be numerically compared with 127 * expected results, so 1.0.0 < 1.0.4 < 1.1.0 < 2.0.300 < 3.5.0. 128 */ 129 #define CHRE_API_VERSION CHRE_API_VERSION_1_5 130 131 /** 132 * Utility macro to extract only the API major version of a composite CHRE 133 * version. 134 * 135 * @param version A uint32_t version, e.g. the value returned by 136 * chreGetApiVersion() 137 * 138 * @return The API major version in the least significant byte, e.g. 0x01 139 */ 140 #define CHRE_EXTRACT_MAJOR_VERSION(version) \ 141 (uint32_t)(((version) & UINT32_C(0xFF000000)) >> 24) 142 143 /** 144 * Utility macro to extract only the API minor version of a composite CHRE 145 * version. 146 * 147 * @param version A uint32_t version, e.g. the CHRE_API_VERSION constant 148 * 149 * @return The API minor version in the least significant byte, e.g. 0x01 150 */ 151 #define CHRE_EXTRACT_MINOR_VERSION(version) \ 152 (uint32_t)(((version) & UINT32_C(0x00FF0000)) >> 16) 153 154 /** 155 * Utility macro to extract only the API minor version of a composite CHRE 156 * version. 157 * 158 * @param version A complete uint32_t version, e.g. the value returned by 159 * chreGetVersion() 160 * 161 * @return The implementation patch version in the least significant two bytes, 162 * e.g. 0x0123, with all other bytes set to 0 163 */ 164 #define CHRE_EXTRACT_PATCH_VERSION(version) (uint32_t)((version) & UINT32_C(0xFFFF)) 165 166 /** 167 * Get the API version the CHRE implementation was compiled against. 168 * 169 * This is not necessarily the CHRE_API_VERSION in the header the nanoapp was 170 * built against, and indeed may not have even appeared in the context_hub_os.h 171 * header which this nanoapp was built against. 172 * 173 * By definition, this will have the two least significant bytes set to 0, 174 * and only contain the major and minor version number. 175 * 176 * @return The API version. 177 */ 178 uint32_t chreGetApiVersion(void); 179 180 /** 181 * Get the version of this CHRE implementation. 182 * 183 * By definition, ((chreGetApiVersion() & UINT32_C(0xFFFF0000)) == 184 * (chreGetVersion() & UINT32_C(0xFFFF0000))). 185 * 186 * The Patch Version, in the lower two bytes, only have meaning in context 187 * of this specific platform ID. It is increased by the platform every time 188 * a backwards-compatible bug fix is released. 189 * 190 * @return The version. 191 * 192 * @see chreGetPlatformId() 193 */ 194 uint32_t chreGetVersion(void); 195 196 /** 197 * Get the Platform ID of this CHRE. 198 * 199 * The most significant five bytes are the vendor ID as set out by the 200 * NANOAPP_VENDOR convention in the original context hub HAL header file 201 * (context_hub.h), also used by nanoapp IDs. 202 * 203 * The least significant three bytes are set by the vendor, but must be 204 * unique for each different CHRE implementation/hardware that the vendor 205 * supplies. 206 * 207 * The idea is that in the case of known bugs in the field, a new nanoapp could 208 * be shipped with a workaround that would use this value, and chreGetVersion(), 209 * to have code that can conditionally work around the bug on a buggy version. 210 * Thus, we require this uniqueness to allow such a setup to work. 211 * 212 * @return The platform ID. 213 * 214 * @see CHRE_EXTRACT_VENDOR_ID 215 */ 216 uint64_t chreGetPlatformId(void); 217 218 #ifdef __cplusplus 219 } 220 #endif 221 222 #endif /* _CHRE_VERSION_H_ */ 223
