mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
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Update IDF to 1c3dd23
* Update mDNS and LEDC * update toolchain * Update IDF to 1c3dd23 * Advertise the board variant for Arduino OTA * Add generic variant definition for mDNS
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Me No Dev
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244
tools/sdk/include/bluedroid/btc_a2dp_source.h
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244
tools/sdk/include/bluedroid/btc_a2dp_source.h
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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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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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// 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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* Filename: btc_a2dp_source.h
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*
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*******************************************************************************/
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#ifndef __BTC_A2DP_SOURCE_H__
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#define __BTC_A2DP_SOURCE_H__
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#include <stdbool.h>
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#include "bt_target.h"
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#include "bta_api.h"
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#include "btc_av_api.h"
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#include "esp_a2dp_api.h"
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#if BTC_AV_SRC_INCLUDED
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/*******************************************************************************
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** Data types
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*******************************************************************************/
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/* tBTC_MEDIA_INIT_AUDIO msg structure */
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typedef struct {
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BT_HDR hdr;
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UINT16 SamplingFreq; /* 16k, 32k, 44.1k or 48k*/
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UINT8 ChannelMode; /* mono, dual, stereo or joint stereo*/
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UINT8 NumOfSubBands; /* 4 or 8 */
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UINT8 NumOfBlocks; /* 4, 8, 12 or 16*/
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UINT8 AllocationMethod; /* loudness or SNR*/
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UINT16 MtuSize; /* peer mtu size */
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} tBTC_MEDIA_INIT_AUDIO;
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/* tBTC_MEDIA_UPDATE_AUDIO msg structure */
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typedef struct {
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BT_HDR hdr;
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UINT16 MinMtuSize; /* Minimum peer mtu size */
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UINT8 MaxBitPool; /* Maximum peer bitpool */
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UINT8 MinBitPool; /* Minimum peer bitpool */
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} tBTC_MEDIA_UPDATE_AUDIO;
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/* tBTC_MEDIA_INIT_AUDIO_FEEDING msg structure */
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typedef struct {
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BT_HDR hdr;
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tBTC_AV_FEEDING_MODE feeding_mode;
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tBTC_AV_MEDIA_FEEDINGS feeding;
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} tBTC_MEDIA_INIT_AUDIO_FEEDING;
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/*******************************************************************************
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** Public functions
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*******************************************************************************/
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/*******************************************************************************
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**
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** Function btc_a2dp_source_startup
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**
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** Description Initialize and startup the A2DP source module. This function
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** should be called by the BTC AV state machine prior to using
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** the module
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**
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** Returns TRUE is success
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**
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*******************************************************************************/
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bool btc_a2dp_source_startup(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_shutdown
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**
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** Description Shutdown and cleanup the A2DP source module.
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**
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*******************************************************************************/
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void btc_a2dp_source_shutdown(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_enc_init_req
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**
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** Description Request to initialize the media task encoder
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**
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** Returns TRUE is success
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**
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*******************************************************************************/
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BOOLEAN btc_a2dp_source_enc_init_req(tBTC_MEDIA_INIT_AUDIO *p_msg);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_enc_udpate_req
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**
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** Description Request to update the media task encoder
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**
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** Returns TRUE is success
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**
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*******************************************************************************/
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BOOLEAN btc_a2dp_source_enc_update_req(tBTC_MEDIA_UPDATE_AUDIO *p_msg);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_start_audio_req
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**
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** Description Request to start audio encoding task
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**
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** Returns TRUE is success
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**
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*******************************************************************************/
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BOOLEAN btc_a2dp_source_start_audio_req(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_stop_audio_req
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**
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** Description Request to stop audio encoding task
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**
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** Returns TRUE is success
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**
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*******************************************************************************/
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BOOLEAN btc_a2dp_source_stop_audio_req(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_tx_flush_req
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**
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** Description Request to flush audio encoding pipe
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**
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** Returns TRUE is success
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**
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*******************************************************************************/
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BOOLEAN btc_a2dp_source_tx_flush_req(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_audio_readbuf
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**
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** Description Read an audio buffer from the BTC media TX queue
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**
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** Returns pointer on a aa buffer ready to send
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**
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*******************************************************************************/
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BT_HDR *btc_a2dp_source_audio_readbuf(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_audio_feeding_init_req
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**
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** Description Request to initialize audio feeding
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**
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** Returns TRUE if success
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**
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*******************************************************************************/
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BOOLEAN btc_a2dp_source_audio_feeding_init_req(tBTC_MEDIA_INIT_AUDIO_FEEDING *p_msg);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_is_streaming
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**
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** Description Check whether A2DP source is in streaming state
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**
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*******************************************************************************/
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bool btc_a2dp_source_is_streaming(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_is_task_shutting_down
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**
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** Description Check whether A2DP source media task is shutting down
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**
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*******************************************************************************/
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bool btc_a2dp_source_is_task_shutting_down(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_on_idle
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**
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** Description Request 'idle' request from BTC AV state machine during
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** initialization
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**
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*******************************************************************************/
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void btc_a2dp_source_on_idle(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_on_stopped
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**
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** Description Process 'stop' request from the BTC AV state machine to stop
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** A2DP streaming
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**
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*******************************************************************************/
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void btc_a2dp_source_on_stopped(tBTA_AV_SUSPEND *p_av);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_on_suspended
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**
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** Description Process 'suspend' request from the BTC AV state machine to stop
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** A2DP streaming
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**
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*******************************************************************************/
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void btc_a2dp_source_on_suspended(tBTA_AV_SUSPEND *p_av);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_setup_codec
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**
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** Description initialize the encoder parameters
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**
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*******************************************************************************/
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void btc_a2dp_source_setup_codec(void);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_set_tx_flush
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**
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** Description enable/disable discarding of transmitted frames
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**
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*******************************************************************************/
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void btc_a2dp_source_set_tx_flush(BOOLEAN enable);
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/*******************************************************************************
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**
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** Function btc_a2dp_source_encoder_update
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**
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** Description update changed SBC encoder parameters
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**
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*******************************************************************************/
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void btc_a2dp_source_encoder_update(void);
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#endif /* #if BTC_AV_SRC_INCLUDED */
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#endif /* __BTC_A2DP_SOURCE_H__ */
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