17. 录音功能

17.1. 初始化和监听录音事件

//获取录音功能操作对象
mRecordOp = RecordOpImpl.getInstance(RCSPController.getInstance().getRcspOp());
//录音事件回调
final OnRecordStateCallback recordStateCallback = (device, state) -> {
    switch (state.getState()) {
        case RecordState.RECORD_STATE_IDLE:  //空闲或者结束
            int reason = state.getReason();  //结束原因
            if (reason == RecordState.REASON_NORMAL) { //录音完成
                byte[] voiceData = state.getVoiceData(); //录音全部数据
            } else { //录音失败，错误码

            }
            break;
        case RecordState.RECORD_STATE_START: //开始录音， 设备端主动开始录音，这里会回调
            RecordParam param = state.getRecordParam(); //录音参数
            //param.getVoiceType(); //数据格式
            //param.getSampleRate(); //采样率
            //param.getVadWay();   //断句方
            break;
        case RecordState.RECORD_STATE_WORKING: //正在录音
            RecordParam recordParam = state.getRecordParam(); //录音参数
            byte[] data = state.getVoiceDataBlock(); //录音数据
            break;
    }
};
//注册录音事件回调
mRecordOp.addOnRecordStateCallback(recordStateCallback);

//退出界面，或者不需要监听回调，记得移除回调。
//mRecordOp.removeOnRecordStateCallback(recordStateCallback);

Note

1. 录音状态, RecordState

2. 设备主动请求开始录音时，SDK会回调对应状态，用户需要做好状态处理

3. 注册和移除回调，关联使用。重复注册，会造成事件重复回调。

17.1.1. RecordState

录音状态

public class RecordState {
     /**
      * 录音状态 -- 空闲状态
      */
     public static final int RECORD_STATE_IDLE = 0;
     /**
      * 录音状态 -- 开始状态
      */
     public static final int RECORD_STATE_START = 1;
     /**
      * 录音状态 -- 工作状态
      */
     public static final int RECORD_STATE_WORKING = 2;

     /**
      * 正常结束
      */
     public static final int REASON_NORMAL = 0;
     /**
      * 主动结束
      */
     public static final int REASON_STOP = 1;

     /**
      * 状态
      */
     private int state = RECORD_STATE_IDLE;
     /**
      * 录音参数
      */
     private RecordParam recordParam;
     /**
      * 音频内容块
      */
     private byte[] voiceDataBlock;
     /**
      * 结束原因
      */
     private int reason = REASON_NORMAL;
     /**
      * 音频内容
      */
     private byte[] voiceData;
     /**
      * 错误描述
      */
     private String message;
 }

17.2. 开始录音

用户主动开始录音

if (null == mRecordOp) {
    System.out.println("还没有初始化！！！");
    return;
}
BluetoothDevice device = RCSPController.getInstance().getUsingDevice();
if(mRecordOp.isRecording(device)){
    System.out.println("正在录音中");
    return;
}
//录音参数
//voiceType --- 数据格式
//sampleRate --- 采样率
//vadWay --- 断句方
RecordParam param = new RecordParam(RecordParam.VOICE_TYPE_OPUS, RecordParam.SAMPLE_RATE_16K, RecordParam.VAD_WAY_DEVICE);
//执行录音功能
mRecordOp.startRecord(device, param, new OnRcspActionCallback<Boolean>() {
    @Override
    public void onSuccess(BluetoothDevice device, Boolean message) {
        //回调操作成功
    }

    @Override
    public void onError(BluetoothDevice device, BaseError error) {
        //回调操作失败
        //error --- 错误信息
    }
});

17.3. 停止录音

用户主动停止录音

if (null == mRecordOp) {
    System.out.println("还没有初始化！！！");
    return;
}
mRecordOp.stopRecord(RCSPController.getInstance().getUsingDevice(), RecordState.REASON_NORMAL, new OnRcspActionCallback<Boolean>() {
    @Override
    public void onSuccess(BluetoothDevice device, Boolean message) {
        //回调操作成功
    }

    @Override
    public void onError(BluetoothDevice device, BaseError error) {
        //回调操作失败
        //error --- 错误信息
    }
});

17.4. 释放资源

不再使用时，需要释放对象

if(null == mRecordOp) return;
mRecordOp.destroy();
mRecordOp = null;