Jtt1078Handler.java
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package com.genersoft.iot.vmp.jtt1078.server;
import com.genersoft.iot.vmp.VManageBootstrap;
import com.genersoft.iot.vmp.jtt1078.publisher.Channel;
import com.genersoft.iot.vmp.jtt1078.publisher.PublishManager;
import com.genersoft.iot.vmp.jtt1078.util.Packet;
import com.genersoft.iot.vmp.jtt1078.websocket.Jtt1078AudioBroadcastManager;
import com.genersoft.iot.vmp.vmanager.jt1078.platform.Jt1078OfCarController;
import com.genersoft.iot.vmp.vmanager.jt1078.platform.config.DataBuffer;
import com.genersoft.iot.vmp.vmanager.jt1078.platform.domain.SimFlow;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.redis.core.StringRedisTemplate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Set;
import java.util.concurrent.TimeUnit;
public class Jtt1078Handler extends SimpleChannelInboundHandler<Packet> {
private static final Logger logger = LoggerFactory.getLogger(Jtt1078Handler.class);
private static DataBuffer simFlowDataBuffer;
private static StringRedisTemplate redisTemplate;
private Integer port;
private String currentTag; // FFmpeg用 (可能带端口后缀)
private String currentSim; // 纯SIM (日志用)
private int currentChannelId; // 当前通道号
private long lastStatTime = 0;
private long currentSecondFlow = 0;
private int currentSecondCount = 0;
private long lastRedisKeepAliveTime = 0;
public Jtt1078Handler(Integer port) {
this.port = port;
}
public Jtt1078Handler() {}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
super.channelActive(ctx);
if (redisTemplate == null) redisTemplate = VManageBootstrap.getBean(StringRedisTemplate.class);
if (simFlowDataBuffer == null) simFlowDataBuffer = VManageBootstrap.getBean(DataBuffer.class);
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, Packet packet) throws Exception {
io.netty.channel.Channel nettyChannel = ctx.channel();
// 1. 协议解析
packet.seek(8);
String sim = packet.nextBCD() + packet.nextBCD() + packet.nextBCD() + packet.nextBCD() + packet.nextBCD() + packet.nextBCD();
int channel = packet.nextByte() & 0xff;
String rawSim = sim;
// 生成标准 Key: 138000-1 (去除前导0)
String standardTag = rawSim.replaceAll("^0+", "") + "-" + channel;
String tag = standardTag;
this.currentSim = rawSim.replaceAll("^0+", "");
this.currentChannelId = channel;
// 2. 端口过滤与重命名 (保持原有逻辑，处理多端口映射)
if (port != null) {
Set<String> set = Jt1078OfCarController.map.get(port);
String findSet = Jt1078OfCarController.getFindSet(set, tag);
if (findSet != null) {
tag = findSet + "_" + port; // tag 变成了 138000-1_1078
} else {
return;
}
}
this.currentTag = tag;
// 3. Redis保活
long now = System.currentTimeMillis();
if (now - lastRedisKeepAliveTime > 5000) {
String redisKey = "tag:" + tag;
if (Boolean.TRUE.equals(redisTemplate.hasKey(redisKey))) {
redisTemplate.expire(redisKey, 60, TimeUnit.SECONDS);
} else {
redisTemplate.opsForSet().add(redisKey, tag);
redisTemplate.expire(redisKey, 60, TimeUnit.SECONDS);
logger.info("[{}] Stream Online", tag);
}
lastRedisKeepAliveTime = now;
}
// 4. 流量统计
long currentSecond = now / 1000;
long lastSecond = lastStatTime / 1000;
currentSecondFlow += packet.size();
currentSecondCount++;
if (currentSecond != lastSecond) {
if (lastStatTime != 0) {
String timeStr = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").format(LocalDateTime.now());
SimFlow simFlow = SimFlow.builder().sim(rawSim).channel(channel).flow(currentSecondFlow).count(currentSecondCount).time(timeStr).build();
if (simFlowDataBuffer != null) simFlowDataBuffer.setValue(simFlow);
}
currentSecondFlow = 0;
currentSecondCount = 0;
lastStatTime = now;
}
// 5. 初始化组件 (核心修复点)
if (!SessionManager.contains(nettyChannel, "tag")) {
// A. 启动 FFmpeg 推流 (使用可能带后缀的 tag，用于视频直播)
Channel chl = PublishManager.getInstance().open(tag);
// B. 双重注册：同时注册 tag 和 intercom_tag
// 这样视频直播用 tag，语音对讲用 intercom_tag，两者互不干扰
SessionManager.set(nettyChannel, "tag", tag);
SessionManager.set(nettyChannel, "intercom_tag", standardTag); // 供 WebSocket 查找
logger.info("Publish Start. VideoTag=[{}], IntercomTag=[{}]", tag, standardTag);
}
// 6. 数据处理
processMediaPayload(nettyChannel, packet, tag, lengthOffset(packet));
}
/**
* 【重要】修正协议头长度计算
* DataType=3(音频) 和 2(对讲) 没有帧间隔字段(4字节)，所以偏移量要减4
*/
private int lengthOffset(Packet packet) {
packet.seek(15);
int dataType = (packet.nextByte() >> 4) & 0x0f;
if (dataType == 0x04) {
return 28 - 8 - 2 - 2; // 透传
} else if (dataType == 0x03 || dataType == 0x02) {
return 28 - 4; // 音频 & 对讲
}
return 28; // 视频
}
private void processMediaPayload(io.netty.channel.Channel nettyChannel, Packet packet, String tag, int lengthOffset) {
Integer sequence = SessionManager.get(nettyChannel, "video-sequence");
if (sequence == null) sequence = 0;
packet.seek(15);
byte dataTypeByte = packet.nextByte();
int dataType = (dataTypeByte >> 4) & 0x0f; // 0=AV, 1=V, 2=Intercom, 3=Audio
int pkType = dataTypeByte & 0x0f;
packet.seek(5);
int pt = packet.nextByte() & 0x7f;
// --- 分支 A: 视频流 (0, 1) ---
// 视频流必须发给 PublishManager (FFmpeg)
if (dataType == 0x00 || dataType == 0x01) {
if (pkType == 0 || pkType == 2) {
sequence += 1;
SessionManager.set(nettyChannel, "video-sequence", sequence);
}
long timestamp = packet.seek(16).nextLong();
byte[] videoData = packet.seek(lengthOffset + 2).nextBytes();
// 推流到 FFmpeg (直播)
PublishManager.getInstance().publishVideo(tag, sequence, timestamp, pt, videoData);
}
// --- 分支 B: 音频流 (0, 2, 3) ---
else if (dataType == 0x03 || dataType == 0x02 || dataType == 0x00) {
// 只有明确是音频/对讲包时才处理
if (dataType == 0x03 || dataType == 0x02) {
long timestamp = packet.seek(16).nextLong();
byte[] audioData = packet.seek(lengthOffset + 2).nextBytes();
// 1. 发送给 WebSocket (前端监听 - 对讲核心)
// 无论是什么音频，只要上来了，就发给 WebSocket，保证对讲能听到
Jtt1078AudioBroadcastManager.broadcastAudio(this.currentSim, this.currentChannelId, audioData);
// 2. 发送给 FFmpeg (直播/录像)
// 【核心分流逻辑】
// 如果是双向对讲(0x02)，严格禁止发给 FFmpeg！
// 只有 0x03 (环境监听) 才发给 FFmpeg 进行混流录制
if (dataType != 0x02) {
PublishManager.getInstance().publishAudio(tag, sequence, timestamp, pt, audioData);
}
}
}
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
super.channelInactive(ctx);
release(ctx.channel());
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
String msg = cause.getMessage();
if (msg != null && (msg.contains("invalid protocol header") || msg.contains("Connection reset"))) {
// ignore scan errors
} else {
logger.error("Jtt1078Handler Exception: {}", cause.getMessage());
}
release(ctx.channel());
ctx.close();
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof IdleStateEvent) {
IdleStateEvent event = (IdleStateEvent) evt;
if (event.state() == IdleState.READER_IDLE) {
logger.warn("Read Timeout: {}", currentTag);
ctx.close();
}
} else {
super.userEventTriggered(ctx, evt);
}
}
private void release(io.netty.channel.Channel channel) {
String tag = SessionManager.get(channel, "tag");
if (tag != null) {
SessionManager.remove(channel);
PublishManager.getInstance().close(tag);
}
}
}