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