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      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_UTIL_ID_FROM_STRING_IMPL_H_
     18 #define CHRE_UTIL_ID_FROM_STRING_IMPL_H_
     19 
     20 #include "chre/util/id_from_string.h"
     21 
     22 namespace chre {
     23 
     24 constexpr uint64_t createIdFromString(const char str[5]) {
     25   return (static_cast<uint64_t>(str[0]) << 56)
     26       | (static_cast<uint64_t>(str[1]) << 48)
     27       | (static_cast<uint64_t>(str[2]) << 40)
     28       | (static_cast<uint64_t>(str[3]) << 32)
     29       | (static_cast<uint64_t>(str[4]) << 24);
     30 }
     31 
     32 constexpr uint64_t createPlatformIdFromVendorPlatform(uint64_t vendorId,
     33                                                       uint32_t platformId) {
     34   // Ensure that only the vendor ID can occupy the top 5 bytes and the
     35   // platform ID can only occupy the bottom 3 bytes.
     36   return (vendorId & 0xffffffffff000000) | (platformId & 0xffffff);
     37 }
     38 
     39 }  // namespace chre
     40 
     41 #endif  // CHRE_UTIL_ID_FROM_STRING_IMPL_H_
     42