1 // 2 // Copyright 2016 Google, Inc. 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 #include "android/bluetooth/uuid.h" 18 19 #include <binder/Parcel.h> 20 21 using android::Parcelable; 22 using android::Parcel; 23 using android::String16; 24 using android::status_t; 25 using android::OK; 26 27 namespace android { 28 namespace bluetooth { 29 30 status_t UUID::writeToParcel(Parcel* parcel) const { 31 // The scheme used by android.os.ParcelUuid is to wrote the most significant 32 // bits first as one 64-bit integer, followed by the least significant bits in 33 // a second 64-bit integer. This is the same as writing the raw-bytes in 34 // sequence, but we don't want to assume any host-endianness here. So follow 35 // the same scheme and use the same Parcel APIs. 36 ::bluetooth::Uuid::UUID128Bit bytes = uuid.To128BitBE(); 37 38 uint64_t most_sig_bits = 39 ((((uint64_t)bytes[0]) << 56) | (((uint64_t)bytes[1]) << 48) | 40 (((uint64_t)bytes[2]) << 40) | (((uint64_t)bytes[3]) << 32) | 41 (((uint64_t)bytes[4]) << 24) | (((uint64_t)bytes[5]) << 16) | 42 (((uint64_t)bytes[6]) << 8) | bytes[7]); 43 44 uint64_t least_sig_bits = 45 ((((uint64_t)bytes[8]) << 56) | (((uint64_t)bytes[9]) << 48) | 46 (((uint64_t)bytes[10]) << 40) | (((uint64_t)bytes[11]) << 32) | 47 (((uint64_t)bytes[12]) << 24) | (((uint64_t)bytes[13]) << 16) | 48 (((uint64_t)bytes[14]) << 8) | bytes[15]); 49 50 status_t status = parcel->writeUint64(most_sig_bits); 51 if (status != OK) return status; 52 53 status = parcel->writeUint64(least_sig_bits); 54 return status; 55 } 56 57 status_t UUID::readFromParcel(const Parcel* parcel) { 58 ::bluetooth::Uuid::UUID128Bit bytes; 59 60 uint64_t most_sig_bits, least_sig_bits; 61 status_t status = parcel->readUint64(&most_sig_bits); 62 if (status != OK) return status; 63 64 status = parcel->readUint64(&least_sig_bits); 65 if (status != OK) return status; 66 67 bytes[0] = (most_sig_bits >> 56) & 0xFF; 68 bytes[1] = (most_sig_bits >> 48) & 0xFF; 69 bytes[2] = (most_sig_bits >> 40) & 0xFF; 70 bytes[3] = (most_sig_bits >> 32) & 0xFF; 71 bytes[4] = (most_sig_bits >> 24) & 0xFF; 72 bytes[5] = (most_sig_bits >> 16) & 0xFF; 73 bytes[6] = (most_sig_bits >> 8) & 0xFF; 74 bytes[7] = most_sig_bits & 0xFF; 75 76 bytes[8] = (least_sig_bits >> 56) & 0xFF; 77 bytes[9] = (least_sig_bits >> 48) & 0xFF; 78 bytes[10] = (least_sig_bits >> 40) & 0xFF; 79 bytes[11] = (least_sig_bits >> 32) & 0xFF; 80 bytes[12] = (least_sig_bits >> 24) & 0xFF; 81 bytes[13] = (least_sig_bits >> 16) & 0xFF; 82 bytes[14] = (least_sig_bits >> 8) & 0xFF; 83 bytes[15] = least_sig_bits & 0xFF; 84 85 uuid = ::bluetooth::Uuid::From128BitBE(bytes); 86 return status; 87 } 88 89 } // namespace bluetooth 90 } // namespace android 91
