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/*
* Copyright 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 bitsPerSample,
int channelCount);
/**
* 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 bufferLength);
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