Channel.java
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package com.genersoft.iot.vmp.jtt1078.publisher;
import com.genersoft.iot.vmp.jtt1078.codec.AudioCodec;
import com.genersoft.iot.vmp.jtt1078.codec.MP3Encoder;
import com.genersoft.iot.vmp.jtt1078.entity.Media;
import com.genersoft.iot.vmp.jtt1078.entity.MediaEncoding;
import com.genersoft.iot.vmp.jtt1078.flv.AudioTag;
import com.genersoft.iot.vmp.jtt1078.flv.FlvAudioTagEncoder;
import com.genersoft.iot.vmp.jtt1078.flv.FlvEncoder;
import com.genersoft.iot.vmp.jtt1078.subscriber.Subscriber;
import com.genersoft.iot.vmp.jtt1078.subscriber.VideoSubscriber;
import com.genersoft.iot.vmp.jtt1078.util.ByteBufUtils;
import com.genersoft.iot.vmp.jtt1078.util.ByteHolder;
import com.genersoft.iot.vmp.jtt1078.util.Configs;
import com.genersoft.iot.vmp.jtt1078.util.FLVUtils;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Arrays;
import java.util.Iterator;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
public class Channel
{
static Logger logger = LoggerFactory.getLogger(Channel.class);
ConcurrentLinkedQueue<Subscriber> subscribers;
// [修改] 使用IStreamPublisher接口,通过工厂创建具体的推流器
IStreamPublisher streamPublisher;
String tag;
boolean publishing;
ByteHolder buffer;
AudioCodec audioCodec;
FlvEncoder flvEncoder;
private long firstTimestamp = -1;
/** 相对时间戳(用于RTMP发送) - 与jtt1078-video-server保持一致 */
private int videoTimestamp = 0;
private long lastVideoTimeOffset = -1; // 初始值-1表示未初始化,避免与有效timeoffset混淆
/** 相对时间戳(用于RTMP发送音频) */
private int audioTimestamp = 0;
private long lastAudioTimeOffset = -1; // 初始值-1表示未初始化,避免与有效timeoffset混淆
// ========== 新增:视频参数检测和FFmpeg自动重启相关 ==========
/** 上一次接收到的SPS哈希值,用于检测视频参数变化 */
private int lastSPSHash = 0;
/** FFmpeg是否需要重启的标志 */
private AtomicBoolean ffmpegNeedRestart = new AtomicBoolean(false);
/** 最后一次FFmpeg重启时间(毫秒),用于防止频繁重启 */
private AtomicLong lastRestartTime = new AtomicLong(0);
/** 重启冷却时间(毫秒),3秒内不重复重启 */
private static final long RESTART_COOLDOWN_MS = 3000;
/** 是否正在等待新的I帧(FFmpeg重启期间) */
private AtomicBoolean waitingForIFrame = new AtomicBoolean(false);
/** 视频参数信息 */
private volatile VideoParamInfo currentVideoParam = new VideoParamInfo();
/** 是否已发送视频Sequence Header(用于RTMP推流) */
private boolean videoHeaderSentForRtmp = false;
/** 是否已发送FLV Header(用于RTMP推流) */
private boolean flvHeaderSentForRtmp = false;
/** 音频编码器(用于RTMP推流) */
private MP3Encoder mp3Encoder;
private FlvAudioTagEncoder audioTagEncoder;
/** 视频参数内部类 */
private static class VideoParamInfo {
int width = 0;
int height = 0;
int fps = 0;
String resolution = "unknown";
@Override
public String toString() {
return String.format("%dx%d@%dfps [%s]", width, height, fps, resolution);
}
}
public Channel(String tag)
{
this.tag = tag;
this.subscribers = new ConcurrentLinkedQueue<>();
this.flvEncoder = new FlvEncoder(true, true);
this.buffer = new ByteHolder(2048 * 100);
// [修改] 使用工厂创建推流器
// 根据配置决定创建FFmpeg推流器还是原生RTMP推流器
String rtmpUrl = Configs.get("rtmp.url");
if (StringUtils.isNotBlank(rtmpUrl))
{
logger.info("[{}] 使用推流器工厂创建推流器...", tag);
streamPublisher = StreamPublisherFactory.create(tag);
logger.info("[{}] 推流器类型: {}", tag, streamPublisher.getType());
logger.info("[{}] 推流器描述: {}", tag, StreamPublisherFactory.getPublisherTypeDescription());
streamPublisher.start(tag);
}
}
public boolean isPublishing()
{
return publishing;
}
public Subscriber subscribe(ChannelHandlerContext ctx)
{
Subscriber subscriber = new VideoSubscriber(this.tag, ctx);
this.subscribers.add(subscriber);
return subscriber;
}
public void writeAudio(long timestamp, int pt, byte[] data)
{
// 1. 转码为 PCM (用于 FLV 封装,FFmpeg 会从 FLV 中读取 PCM 并转码为 AAC)
if (audioCodec == null)
{
audioCodec = AudioCodec.getCodec(pt);
logger.info("[{}] audio codec: {}", tag, MediaEncoding.getEncoding(Media.Type.Audio, pt));
}
// 写入到内部广播,FFmpeg 通过 HTTP 拉取这个数据
broadcastAudio(timestamp, audioCodec.toPCM(data));
}
public void writeVideo(long sequence, long timeoffset, int payloadType, byte[] h264)
{
if (firstTimestamp == -1) {
firstTimestamp = timeoffset;
logger.info("[{}] writeVideo: first timestamp set to {}, h264len={}", tag, timeoffset, h264.length);
}
this.publishing = true;
this.buffer.write(h264);
// 调试日志
if (logger.isDebugEnabled()) {
logger.debug("[{}] writeVideo called: seq={}, time={}, payloadType={}, h264len={}, buffer.size={}",
tag, sequence, timeoffset, payloadType, h264.length, buffer.size());
}
while (true)
{
byte[] nalu = readNalu();
if (nalu == null) break;
if (nalu.length < 4) continue;
// ========== 新增:检测视频参数变化 ==========
int nalType = nalu[4] & 0x1F;
boolean isIDR = (nalType == 5); // IDR帧(I帧)
if (nalType == 7) { // SPS (Sequence Parameter Set)
checkAndHandleSPSChange(nalu);
}
// 如果正在等待I帧,跳过所有数据直到收到新的I帧
if (waitingForIFrame.get()) {
if (isIDR) {
logger.info("[{}] 收到新的I帧,停止等待,FFmpeg应已重启完成", tag);
waitingForIFrame.set(false);
// 重置FLV编码器
this.flvEncoder = new FlvEncoder(true, true);
this.videoHeaderSentForRtmp = false;
this.flvHeaderSentForRtmp = false;
firstTimestamp = timeoffset;
} else {
// 跳过非I帧数据
continue;
}
}
// 1. 封装为 FLV Tag (必须)
// FFmpeg 通过 HTTP 读取这些 FLV Tag
byte[] flvTag = this.flvEncoder.write(nalu, (int) (timeoffset - firstTimestamp));
if (flvTag == null) {
logger.debug("[{}] FlvEncoder.write returned null, skipping. nalType=0x{}", tag, Integer.toHexString(nalType));
continue;
}
logger.debug("[{}] FlvEncoder.write returned flvTag length={}, nalType=0x{}", tag, flvTag.length, Integer.toHexString(nalType));
// 广播给所有的观众
broadcastVideo(timeoffset, flvTag);
}
}
/**
* 检查SPS变化并处理推流器
*
* 根据推流器类型决定处理方式:
* - FFmpeg推流器:重启FFmpeg进程(因为FFmpeg使用-vcodec copy无法感知SPS变化)
* - 原生RTMP推流器:立即发送新的AVC Sequence Header(无缝切换,0中断)
*/
private synchronized void checkAndHandleSPSChange(byte[] nalu) {
int currentHash = Arrays.hashCode(nalu);
if (lastSPSHash != 0 && currentHash != lastSPSHash) {
// SPS变化了,说明视频参数发生了变化
// 解析新的视频参数(仅用于日志显示)
VideoParamInfo newParam = parseVideoParam(nalu);
VideoParamInfo oldParam = currentVideoParam;
logger.info("[{}] ====== 检测到SPS变化 ======", tag);
logger.info("[{}] 旧参数: {}", tag, oldParam);
logger.info("[{}] 新参数: {}", tag, newParam);
logger.info("[{}] SPS哈希变化: {} -> {}", tag,
Integer.toHexString(lastSPSHash),
Integer.toHexString(currentHash));
// 判断推流器类型
boolean isNativeRtmp = (streamPublisher != null && "native".equals(streamPublisher.getType()));
if (isNativeRtmp) {
// 原生RTMP模式:立即发送新的AVC Sequence Header(无缝切换)
handleSPSChangeForNativeRtmp(nalu, newParam);
} else {
// FFmpeg模式:重启FFmpeg进程
handleSPSChangeForFFmpeg(newParam);
}
}
// 更新SPS哈希和视频参数
lastSPSHash = currentHash;
currentVideoParam = parseVideoParam(nalu);
}
/**
* 处理SPS变化(原生RTMP模式)
* 立即发送新的AVC Sequence Header,实现无缝切换
*/
private void handleSPSChangeForNativeRtmp(byte[] nalu, VideoParamInfo newParam) {
logger.info("[{}] ====== 原生RTMP模式:立即发送新的AVC Sequence Header ======", tag);
logger.info("[{}] 码流切换将无缝完成,无需中断", tag);
// 检查冷却时间
long now = System.currentTimeMillis();
long timeSinceLastRestart = now - lastRestartTime.get();
if (timeSinceLastRestart < RESTART_COOLDOWN_MS) {
logger.warn("[{}] 发送AVC Sequence Header过于频繁(距上次{}ms),跳过",
tag, timeSinceLastRestart);
return;
}
if (streamPublisher != null && streamPublisher.isConnected()) {
// 提取SPS和PPS(从FlvEncoder获取)
byte[] sps = extractSPSFromNalu(nalu);
byte[] pps = extractPPSFromBuffer();
// 更新推流器的SPS/PPS缓存
if (streamPublisher instanceof NativeRtmpPublisher) {
((NativeRtmpPublisher) streamPublisher).updateSPSPPS(sps, pps);
}
// 触发发送新的AVC Sequence Header
streamPublisher.sendAVCSequenceHeader();
lastRestartTime.set(now);
logger.info("[{}] ====== AVC Sequence Header已发送,码流切换完成 ======", tag);
} else {
logger.warn("[{}] 推流器未连接,无法发送AVC Sequence Header", tag);
}
}
/**
* 处理SPS变化(FFmpeg模式)
* 重启FFmpeg进程
*/
private void handleSPSChangeForFFmpeg(VideoParamInfo newParam) {
// 检查冷却时间
long now = System.currentTimeMillis();
long timeSinceLastRestart = now - lastRestartTime.get();
if (timeSinceLastRestart < RESTART_COOLDOWN_MS) {
logger.warn("[{}] FFmpeg重启过于频繁(距上次{}ms),跳过本次重启",
tag, timeSinceLastRestart);
return;
}
logger.info("[{}] ====== FFmpeg模式:准备重启FFmpeg ======", tag);
logger.info("[{}] 原因: SPS参数变化(可能包含分辨率、帧率、profile、level等)", tag);
logger.info("[{}] 预计中断时间: 1-2秒", tag);
// 标记需要重启
ffmpegNeedRestart.set(true);
// 立即触发重启(异步执行,避免阻塞)
final String currentTag = tag;
Thread restartThread = new Thread(() -> {
try {
logger.info("[{}] SPS变化检测到,立即触发FFmpeg重启...", currentTag);
restartRtmpPublisher();
} catch (Exception e) {
logger.error("[{}] 触发FFmpeg重启失败: {}", currentTag, e.getMessage(), e);
}
}, "FFmpeg-Restart-" + tag);
restartThread.setDaemon(true);
restartThread.start();
}
/**
* 从NALU中提取SPS
*/
private byte[] extractSPSFromNalu(byte[] nalu) {
// NALU格式: [00 00 00 01 xx] + SPS数据
// SPS从第5个字节开始
if (nalu.length > 5) {
byte[] sps = new byte[nalu.length - 4];
System.arraycopy(nalu, 4, sps, 0, sps.length);
return sps;
}
return nalu;
}
/**
* 从buffer中提取PPS
* 注意:这是一个简化实现,实际可能需要更复杂的逻辑
*/
private byte[] extractPPSFromBuffer() {
// 在实际实现中,应该从buffer中查找PPS NALU(NAL类型为8)
// 这里返回null,让chunkWriter使用缓存的PPS
return null;
}
/**
* 解析H.264 SPS获取视频参数
*/
private VideoParamInfo parseVideoParam(byte[] sps) {
VideoParamInfo info = new VideoParamInfo();
try {
// H.264 SPS解析
// SPS格式: [NAL头(1字节) + profile_idc(1) + constraints(1) + level_idc(1) + 5字节对齐 + sps数据]
if (sps.length < 6) {
logger.warn("[{}] SPS数据长度不足,无法解析: {}", tag, sps.length);
return info;
}
int profile_idc = sps[4] & 0xFF;
int constraint_flags = sps[5] & 0xFF;
int level_idc = sps[6] & 0xFF;
// 查找SPS结束位置(开始于67或68)
int spsStart = -1;
for (int i = 4; i < Math.min(sps.length - 4, 10); i++) {
if ((sps[i] & 0x1F) == 7) {
spsStart = i;
break;
}
}
if (spsStart == -1) {
// 简化模式:直接使用SPS长度估算
int spsLen = (sps.length > 10) ? 4 : 1;
for (int i = 4; i < sps.length - 1; i++) {
if (sps[i] == 0 && sps[i+1] == 0 && sps[i+2] == 0 && sps[i+3] == 1) {
spsLen = i - 4;
break;
}
}
// 根据SPS长度估算分辨率(非常粗略)
int lenCategory = spsLen / 10;
if (spsLen < 20) {
info.width = 352;
info.height = 288;
info.fps = 15;
} else if (spsLen < 40) {
info.width = 704;
info.height = 576;
info.fps = 25;
} else {
info.width = 1280;
info.height = 720;
info.fps = 25;
}
} else {
// 详细解析bitstream
// 这里简化处理,实际项目中可以使用完整的H.264解析库
info.width = 1280; // 默认值
info.height = 720;
info.fps = 25;
}
// 根据SPS长度特征判断分辨率
// 这是一个简化的估算方法
int estimatedSize = sps.length;
// 子码流特征: CIF (352x288) -> SPS约8-15字节
// 主码流特征: 720P (1280x720) -> SPS约16-30字节
// 1080P (1920x1080) -> SPS约30+字节
if (estimatedSize < 20) {
// CIF 或类似分辨率
if (estimatedSize < 12) {
info.width = 352;
info.height = 288;
info.fps = 15;
info.resolution = "CIF";
} else {
info.width = 704;
info.height = 576;
info.fps = 25;
info.resolution = "4CIF";
}
} else if (estimatedSize < 35) {
// 720P 或类似
info.width = 1280;
info.height = 720;
info.fps = 25;
info.resolution = "720P";
} else {
// 1080P 或更高
info.width = 1920;
info.height = 1080;
info.fps = 30;
info.resolution = "1080P";
}
} catch (Exception e) {
logger.error("[{}] 解析SPS失败: {}", tag, e.getMessage());
}
return info;
}
/**
* 重启FFmpeg推流进程
*/
public void restartRtmpPublisher() {
long now = System.currentTimeMillis();
lastRestartTime.set(now);
logger.info("[{}] ====== 开始重启FFmpeg推流 ======", tag);
logger.info("[{}] 当前时间: {}", tag, now);
try {
// 1. 标记等待I帧
waitingForIFrame.set(true);
// 2. 关闭旧的推流器
logger.info("[{}] 步骤1: 关闭旧推流器...", tag);
if (streamPublisher != null) {
try {
streamPublisher.close();
} catch (Exception e) {
logger.warn("[{}] 关闭旧推流器时出错: {}", tag, e.getMessage());
}
streamPublisher = null;
}
// 3. 等待FFmpeg进程完全关闭
logger.info("[{}] 步骤2: 等待FFmpeg进程关闭...", tag);
Thread.sleep(500);
// 4. 清空缓冲区,准备接收新的视频数据
logger.info("[{}] 步骤3: 清空视频缓冲区...", tag);
buffer.clear();
firstTimestamp = -1;
// 重置相对时间戳
videoTimestamp = 0;
lastVideoTimeOffset = -1;
audioTimestamp = 0;
lastAudioTimeOffset = -1;
// 5. 重置FLV编码器
logger.info("[{}] 步骤4: 重置FLV编码器...", tag);
flvEncoder = new FlvEncoder(true, true);
videoHeaderSentForRtmp = false;
flvHeaderSentForRtmp = false;
// 6. 重新启动推流器
logger.info("[{}] 步骤5: 启动新推流器...", tag);
String rtmpUrl = Configs.get("rtmp.url");
if (StringUtils.isNotBlank(rtmpUrl)) {
streamPublisher = StreamPublisherFactory.create(tag);
streamPublisher.start(tag);
logger.info("[{}] 新推流器已启动, 类型: {}", tag, streamPublisher.getType());
} else {
logger.warn("[{}] 未配置rtmp.url,跳过启动", tag);
}
// 7. 重置标志
ffmpegNeedRestart.set(false);
logger.info("[{}] ====== FFmpeg重启完成 ======", tag);
logger.info("[{}] 请等待1-2秒让FFmpeg完成初始化...", tag);
} catch (Exception e) {
logger.error("[{}] 重启推流器失败: {}", tag, e.getMessage(), e);
waitingForIFrame.set(false);
ffmpegNeedRestart.set(false);
// 确保streamPublisher被清空
streamPublisher = null;
}
}
/**
* 外部调用:主动触发码流切换(对应1078的9102指令)
* 调用此方法后,FFmpeg会在检测到视频参数变化时自动重启
*/
public void notifyStreamSwitch() {
logger.info("[{}] ====== 收到码流切换通知 ======", tag);
logger.info("[{}] 即将切换码流,请等待设备响应...", tag);
// 记录切换前的状态
VideoParamInfo beforeSwitch = currentVideoParam;
logger.info("[{}] 切换前视频参数: {}", tag, beforeSwitch);
// 重置SPS哈希,这样一旦设备发来新的SPS就能立即检测到
lastSPSHash = 0;
// 标记需要重启
ffmpegNeedRestart.set(true);
// 启动一个线程来处理后续的重启逻辑
new Thread(() -> {
try {
// 等待设备切换并发送新的I帧
Thread.sleep(2000);
// 如果还没有收到新的I帧,手动触发一次检查
if (waitingForIFrame.get()) {
logger.warn("[{}] 未在2秒内收到新I帧,检查是否需要手动重启...", tag);
// 这里不直接重启,而是等待下一个SPS自动触发
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}, "StreamSwitch-Watcher-" + tag).start();
}
/**
* 获取当前视频参数(用于监控和调试)
*/
public VideoParamInfo getCurrentVideoParam() {
return currentVideoParam;
}
/**
* 获取FFmpeg是否需要重启
*/
public boolean isFFmpegNeedRestart() {
return ffmpegNeedRestart.get();
}
public void broadcastVideo(long timeoffset, byte[] flvTag)
{
// ========== 计算相对时间戳(与jtt1078-video-server保持一致)==========
// 初始化lastVideoTimeOffset
if (lastVideoTimeOffset == -1) {
// 首次设置,不累加时间戳
lastVideoTimeOffset = timeoffset;
} else {
// 计算增量并累加到videoTimestamp
videoTimestamp += (int)(timeoffset - lastVideoTimeOffset);
lastVideoTimeOffset = timeoffset;
}
// ========== 发送Sequence Header(仅RTMP推流需要)==========
// 与jtt1078-video-server的VideoSubscriber保持一致:
// 当videoReady()首次为true时,发送Sequence Header FLV tag(时间戳为0)
if (flvEncoder.videoReady()) {
// 先发送 FLV Header(与jtt1078-video-server一致)
if (!flvHeaderSentForRtmp) {
byte[] flvHeader = flvEncoder.getHeader().getBytes();
logger.info("[{}] >>> [RTMP发送] FLV Header, length={}, streamPublisher={}, connected={}",
tag, flvHeader != null ? flvHeader.length : 0,
streamPublisher != null, streamPublisher != null && streamPublisher.isConnected());
if (flvHeader != null && flvHeader.length > 0 && streamPublisher != null && streamPublisher.isConnected()) {
streamPublisher.sendVideoData(flvHeader, 0);
logger.info("[{}] >>> [RTMP发送] FLV Header 已发送", tag);
}
flvHeaderSentForRtmp = true;
}
// 再发送 Video Header (AVC Sequence Header)
if (!videoHeaderSentForRtmp) {
byte[] videoHeader = flvEncoder.getVideoHeader().getBytes();
logger.info("[{}] >>> [RTMP发送] Video Header (AVC Sequence Header), length={}, videoReady={}",
tag, videoHeader != null ? videoHeader.length : 0, flvEncoder.videoReady());
if (videoHeader != null && videoHeader.length > 0) {
FLVUtils.resetTimestamp(videoHeader, 0);
if (streamPublisher != null && streamPublisher.isConnected()) {
streamPublisher.sendVideoData(videoHeader, 0);
logger.info("[{}] >>> [RTMP发送] Video Header 发送完成", tag);
}
}
videoHeaderSentForRtmp = true;
}
}
// 重置FLV Tag中的时间戳为累积的相对时间戳
if (flvTag != null) {
FLVUtils.resetTimestamp(flvTag, videoTimestamp);
}
// 发送给native RTMP推流器(如果有)
if (streamPublisher == null) {
logger.info("[{}] broadcastVideo: streamPublisher is null", tag);
} else if (!streamPublisher.isConnected()) {
logger.info("[{}] broadcastVideo: streamPublisher not connected, connected={}", tag, streamPublisher.isConnected());
} else {
try {
if (flvTag != null && flvTag.length > 0) {
logger.debug("[{}] >>> [RTMP发送] Video Frame, length={}, videoTimestamp={}", tag, flvTag.length, videoTimestamp);
streamPublisher.sendVideoData(flvTag, videoTimestamp);
}
} catch (Exception e) {
logger.error("[{}] 发送视频数据到RTMP失败: {}", tag, e.getMessage());
}
}
// 广播给HTTP订阅者(传递原始timeoffset,保持兼容性)
for (Subscriber subscriber : subscribers)
{
subscriber.onVideoData(timeoffset, flvTag, flvEncoder);
}
}
public void broadcastAudio(long timeoffset, byte[] flvTag)
{
// ========== 暂时禁用RTMP音频发送,只广播给HTTP订阅者 ==========
// [TODO] 后续需要实现AAC编码后再启用音频RTMP发送
/*
if (streamPublisher != null && streamPublisher.isConnected() && flvTag != null && flvTag.length > 0) {
try {
// 初始化音频编码器(如果尚未初始化)
if (mp3Encoder == null) {
mp3Encoder = new MP3Encoder();
}
if (audioTagEncoder == null) {
audioTagEncoder = new FlvAudioTagEncoder();
}
// 音频时间戳处理(与视频类似)
if (lastAudioTimeOffset == -1) {
// 首次设置,不累加时间戳
lastAudioTimeOffset = timeoffset;
} else {
audioTimestamp += (int)(timeoffset - lastAudioTimeOffset);
lastAudioTimeOffset = timeoffset;
}
// PCM编码为MP3
byte[] mp3Data = mp3Encoder.encode(flvTag);
if (mp3Data == null || mp3Data.length == 0) {
logger.debug("[{}] MP3编码失败,跳过该音频帧", tag);
// 仍然广播给HTTP订阅者
for (Subscriber subscriber : subscribers) {
subscriber.onAudioData(timeoffset, flvTag, flvEncoder);
}
return;
}
// 创建音频标签 (format=MP3, rate=22kHz, size=16bit, type=stereo)
AudioTag audioTag = new AudioTag(0, mp3Data.length + 1, AudioTag.MP3, (byte) 2, (byte) 1, (byte) 1, mp3Data);
// 编码为FLV音频标签
ByteBuf audioBuf = audioTagEncoder.encode(audioTag);
byte[] audioFlvTag = ByteBufUtils.readReadableBytes(audioBuf);
// 重置时间戳
FLVUtils.resetTimestamp(audioFlvTag, audioTimestamp);
streamPublisher.sendVideoData(audioFlvTag, audioTimestamp);
logger.debug("[{}] >>> [RTMP发送] Audio Frame, length={}, audioTimestamp={}", tag, audioFlvTag.length, audioTimestamp);
} catch (Exception e) {
logger.error("[{}] 发送音频数据到RTMP失败: {}", tag, e.getMessage());
}
}
*/
// 广播给HTTP订阅者
for (Subscriber subscriber : subscribers)
{
subscriber.onAudioData(timeoffset, flvTag, flvEncoder);
}
}
public void unsubscribe(long watcherId)
{
for (Iterator<Subscriber> itr = subscribers.iterator(); itr.hasNext(); )
{
Subscriber subscriber = itr.next();
if (subscriber.getId() == watcherId)
{
itr.remove();
subscriber.close();
return;
}
}
}
public void close()
{
logger.info("[{}] 关闭Channel,开始清理资源...", tag);
for (Iterator<Subscriber> itr = subscribers.iterator(); itr.hasNext(); )
{
Subscriber subscriber = itr.next();
subscriber.close();
itr.remove();
}
// 关闭推流器
if (streamPublisher != null) {
logger.info("[{}] 关闭推流器...", tag);
streamPublisher.close();
streamPublisher = null;
}
logger.info("[{}] Channel已关闭", tag);
}
// [恢复] 原版 readNalu (FFmpeg 偏好带 StartCode 的数据,或者 FlvEncoder 需要)
private byte[] readNalu()
{
// 寻找 00 00 00 01
for (int i = 0; i < buffer.size() - 3; i++)
{
int a = buffer.get(i + 0) & 0xff;
int b = buffer.get(i + 1) & 0xff;
int c = buffer.get(i + 2) & 0xff;
int d = buffer.get(i + 3) & 0xff;
if (a == 0x00 && b == 0x00 && c == 0x00 && d == 0x01)
{
if (i == 0) continue;
byte[] nalu = new byte[i];
buffer.sliceInto(nalu, i);
logger.debug("[{}] readNalu: found NALU at i={}, len={}, nalType=0x{}",
tag, i, nalu.length, nalu.length > 4 ? String.format("%02x", nalu[4] & 0x1F) : "N/A");
return nalu;
}
}
logger.debug("[{}] readNalu: no start code found, buffer.size={}", tag, buffer.size());
return null;
}
}