| /* |
| * Copyright (C) 2015 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. |
| */ |
| |
| /** |
| * Implements an API to be used by A2DP to do streaming of music over a media |
| * stream. This API provides mechanism to create and control playback of the |
| * media stream depending on the data bits coming from the remote device. The |
| * media stream is played over the default audio media stream type and hence |
| * volume control is handled entirely by the Audio Manager (which is also the |
| * original motivation for this solution. |
| * |
| * TODO: Once the AudioManager provides support for patching audio sources with |
| * volume control we should deprecate this file. |
| */ |
| |
| /** |
| * Creates an audio track object and returns a void handle. Use this handle to the |
| * following functions. |
| * |
| * The ownership of the handle is maintained by the caller of this API and it should eventually be |
| * deleted using BtifAvrcpAudioTrackDelete (see below). |
| */ |
| void* BtifAvrcpAudioTrackCreate(int trackFreq, int channelType); |
| |
| /** |
| * Starts the audio track. |
| */ |
| void BtifAvrcpAudioTrackStart(void *handle); |
| |
| /** |
| * Pauses the audio track. |
| */ |
| void BtifAvrcpAudioTrackPause(void *handle); |
| |
| /** |
| * Sets audio track gain. |
| */ |
| void BtifAvrcpSetAudioTrackGain(void *handle, float gain); |
| |
| /** |
| * Stop / Delete the audio track. |
| * Delete should usually be called stop. |
| */ |
| void BtifAvrcpAudioTrackStop(void *handle); |
| void BtifAvrcpAudioTrackDelete(void *handle); |
| |
| /** |
| * Writes the audio track data to file. |
| * |
| * Used only for debugging. |
| */ |
| int BtifAvrcpAudioTrackWriteData(void *handle, void *audioBuffer, int bufferlen); |