| Sunny Kapdi | 4e95d81 | 2018-02-07 15:08:01 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2018 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 | package android.hardware.bluetooth.a2dp@1.0; |
| 18 | |
| 19 | /** |
| 20 | * HAL interface for Bluetooth A2DP Offload functionality where |
| 21 | * the encoding of the A2DP data packets is offloaded to platform |
| 22 | * specific encoders. The A2DP control path is maintained in the |
| 23 | * Bluetooth stack. |
| 24 | * |
| 25 | * This interface is from HAL server to HAL client. |
| 26 | * |
| 27 | * The HAL server must call into the IBluetoothAudioHost to initiate |
| 28 | * the start, suspend and stop of the streaming operation. These |
| 29 | * calls return immediately and the results, if any, are send over |
| 30 | * the IBluetoothAudioOffload interface. |
| 31 | */ |
| 32 | |
| 33 | interface IBluetoothAudioHost { |
| 34 | /** |
| 35 | * Invoked when the start stream is requested from HAL server |
| 36 | * to HAL client. This indicates that the HAL server |
| 37 | * has initialized the platform for streaming use case, and the |
| 38 | * HAL client can proceed with the streaming procedure. The |
| 39 | * result of the operation must be provided by the HAL |
| 40 | * client using the IBluetoothAudioOffload interface. |
| 41 | */ |
| 42 | oneway startStream(); |
| 43 | |
| 44 | /** |
| 45 | * Invoked when the suspend stream is requested from HAL server |
| 46 | * to HAL client. This indicates that the HAL server |
| 47 | * wants to suspend the streaming procedure. The result of the |
| 48 | * operation must be provided by the HAL client using the |
| 49 | * IBluetoothAudioOffload interface. |
| 50 | */ |
| 51 | oneway suspendStream(); |
| 52 | |
| 53 | /** |
| 54 | * Invoked when the stop stream is requested from HAL server |
| 55 | * to HAL client. This indicates that the HAL server wants to |
| 56 | * stop and reset the streaming procedure. There is no result |
| 57 | * provided by the HAL client for this call. |
| 58 | */ |
| 59 | oneway stopStream(); |
| 60 | |
| 61 | }; |