| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.hardware.bluetooth.a2dp@1.0; |
| |
| enum Status : uint8_t { |
| SUCCESS, |
| FAILURE, |
| /** codec configuration not supported by the audio platform */ |
| UNSUPPORTED_CODEC_CONFIGURATION , |
| /** operation is pending */ |
| PENDING, |
| }; |
| |
| enum CodecType : uint32_t { |
| UNKNOWN = 0x00, |
| SBC = 0x01, |
| AAC = 0x02, |
| APTX = 0x04, |
| APTX_HD = 0x08, |
| LDAC = 0x10, |
| }; |
| enum SampleRate : uint32_t { |
| RATE_UNKNOWN = 0x00, |
| RATE_44100 = 0x01, |
| RATE_48000 = 0x02, |
| RATE_88200 = 0x04, |
| RATE_96000 = 0x08, |
| RATE_176400 = 0x10, |
| RATE_192000 = 0x20, |
| }; |
| enum BitsPerSample : uint8_t { |
| BITS_UNKNOWN = 0x00, |
| BITS_16 = 0x01, |
| BITS_24 = 0x02, |
| BITS_32 = 0x04, |
| }; |
| enum ChannelMode : uint8_t { |
| UNKNOWN = 0x00, |
| MONO = 0x01, |
| STEREO = 0x02, |
| }; |
| struct CodecConfiguration { |
| /** Bluetooth A2DP codec */ |
| CodecType codecType; |
| /** Sampling rate for encoder */ |
| SampleRate sampleRate; |
| /** Bits per sample for encoder */ |
| BitsPerSample bitsPerSample; |
| /** Channel mode for encoder */ |
| ChannelMode channelMode; |
| /** |
| * The encoded audio bitrate in bits / second. |
| * 0x00000000 - The audio bitrate is not specified / unused |
| * 0x00000001 - 0x00FFFFFF - Encoded audio bitrate in bits/second |
| * 0x01000000 - 0xFFFFFFFF - Reserved |
| */ |
| uint32_t encodedAudioBitrate; |
| /** Peer MTU (in octets) */ |
| uint16_t peerMtu; |
| union CodecSpecific { |
| /** |
| * SBC Codec specific information |
| * Refer to SBC Codec specific information elements in A2DP v1.3 |
| * Profile Specification. |
| */ |
| struct SbcData { |
| /** Block length: 4 bits | Subbands: 2 bits | Allocation Method: 2 bits */ |
| uint8_t codecParameters; |
| /** Minimum bitpool value */ |
| uint8_t minBitpool; |
| /** Maximum bitpool value */ |
| uint8_t maxBitpool; |
| } sbcData; |
| struct LdacData { |
| /** |
| * LDAC bitrate index value: |
| * 0x00 - High |
| * 0x01 - Mid |
| * 0x02 - Low |
| * 0x7F - ABR (Adaptive Bit Rate) |
| */ |
| uint8_t bitrateIndex; |
| } ldacData; |
| } codecSpecific; |
| }; |