55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/*
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* Copyright 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <cstdlib>
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namespace android::hardware::bluetooth::hci {
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// HCI UART transport packet types (Volume 4, Part A, 2)
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enum class PacketType : uint8_t {
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UNKNOWN = 0,
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COMMAND = 1,
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ACL_DATA = 2,
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SCO_DATA = 3,
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EVENT = 4,
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ISO_DATA = 5,
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};
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// 2 bytes for opcode, 1 byte for parameter length (Volume 4, Part E, 5.4.1)
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static constexpr size_t kCommandHeaderSize = 3;
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static constexpr size_t kCommandLengthOffset = 2;
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// 2 bytes for handle, 2 bytes for data length (Volume 4, Part E, 5.4.2)
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static constexpr size_t kAclHeaderSize = 4;
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static constexpr size_t kAclLengthOffset = 2;
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// 2 bytes for handle, 1 byte for data length (Volume 4, Part E, 5.4.3)
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static constexpr size_t kScoHeaderSize = 3;
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static constexpr size_t kScoLengthOffset = 2;
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// 1 byte for event code, 1 byte for parameter length (Volume 4, Part E, 5.4.4)
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static constexpr size_t kEventHeaderSize = 2;
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static constexpr size_t kEventLengthOffset = 1;
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// 2 bytes for handle, 2 bytes for data length (Volume 4, Part E, 5.4.5)
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static constexpr size_t kIsoHeaderSize = 4;
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static constexpr size_t kIsoLengthOffset = 2;
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static constexpr size_t kMaxHeaderSize = kAclHeaderSize;
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} // namespace android::hardware::bluetooth::hci
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