kopia lustrzana https://github.com/N0BOY/FT8CN
106 wiersze
4.1 KiB
Java
106 wiersze
4.1 KiB
Java
package com.bg7yoz.ft8cn.icom;
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/**
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* 处理ICom的音频流，继承至AudioUdp。
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* @author BGY70Z
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* @date 2023-08-26
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*/
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import android.util.Log;
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import com.bg7yoz.ft8cn.GeneralVariables;
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import java.net.DatagramPacket;
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import java.util.Arrays;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ThreadPoolExecutor;
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public class IcomAudioUdp extends AudioUdp {
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private static final String TAG = "IcomAudioUdp";
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private final ExecutorService doTXThreadPool =Executors.newCachedThreadPool();
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private final DoTXAudioRunnable doTXAudioRunnable=new DoTXAudioRunnable(this);
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@Override
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public void sendTxAudioData(float[] audioData) {
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if (audioData==null) return;
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short[] temp=new short[audioData.length];
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//传递过来的音频是LPCM,32 float，12000Hz
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//iCOM的音频格式是LPCM 16 Int，12000Hz
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//要做一下浮点到16位int的转换
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for (int i = 0; i < audioData.length; i++) {
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float x = audioData[i];
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if (x > 1.0)
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x = 1.0f;
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else if (x < -1.0)
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x = -1.0f;
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temp[i] = (short) (x * 32767.0);
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}
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doTXAudioRunnable.audioData=temp;
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doTXThreadPool.execute(doTXAudioRunnable);
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}
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private static class DoTXAudioRunnable implements Runnable{
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IcomAudioUdp icomAudioUdp;
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short[] audioData;//传递过来的音频是LPCM 16bit Int,12000hz
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public DoTXAudioRunnable(IcomAudioUdp icomAudioUdp) {
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this.icomAudioUdp = icomAudioUdp;
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}
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@Override
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public void run() {
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if (audioData==null) return;
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final int partialLen = IComPacketTypes.TX_BUFFER_SIZE * 2;//数据包的长度
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//要转换一下到BYTE,小端模式
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//byte[] data = new byte[audioData.length * 2 + partialLen * 4];//多出一点空声音放在前后各20ms*2共80ms
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//先播放，是给出空的声音，for i 循环，做了一个判断，是给前面的空声音，for j循环，做得判断，是让后面发送空声音
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byte[] audioPacket = new byte[partialLen];
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for (int i = 0; i < (audioData.length / IComPacketTypes.TX_BUFFER_SIZE) + 8; i++) {//多出6个周期，前面3个，后面3个多
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if (!icomAudioUdp.isPttOn) break;
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long now = System.currentTimeMillis() - 1;//获取当前时间
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icomAudioUdp.sendTrackedPacket(IComPacketTypes.AudioPacket.getTxAudioPacket(audioPacket
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, (short) 0, icomAudioUdp.localId, icomAudioUdp.remoteId, icomAudioUdp.innerSeq));
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icomAudioUdp.innerSeq++;
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Arrays.fill(audioPacket,(byte)0x00);
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if (i>=3) {//让前两个空数据发送出去
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for (int j = 0; j < IComPacketTypes.TX_BUFFER_SIZE; j++) {
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if ((i-3) * IComPacketTypes.TX_BUFFER_SIZE + j < audioData.length) {
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System.arraycopy(IComPacketTypes.shortToBigEndian((short)
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(audioData[(i-3) * IComPacketTypes.TX_BUFFER_SIZE + j]
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* GeneralVariables.volumePercent))//乘以信号量的比率
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, 0, audioPacket, j * 2, 2);
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}
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}
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}
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while (icomAudioUdp.isPttOn) {
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if (System.currentTimeMillis() - now >= 21) {//20毫秒一个周期
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break;
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}
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}
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}
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Log.d(TAG, "run: 音频发送完毕！！" );
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Thread.currentThread().interrupt();
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}
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}
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@Override
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public void onDataReceived(DatagramPacket packet, byte[] data) {
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super.onDataReceived(packet, data);
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//接收到的是12000采样率的数据
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if (!IComPacketTypes.AudioPacket.isAudioPacket(data)) return;
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byte[] audioData = IComPacketTypes.AudioPacket.getAudioData(data);
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if (onStreamEvents != null) {
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onStreamEvents.OnReceivedAudioData(audioData);
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}
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}
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}
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