CLIENT_SetRealDataCallBackEx回调函数：
/**
* 实时监视数据回调函数--扩展(pBuffer内存由SDK内部申请释放)
*/
private static class CbfRealDataCallBackEx implements NetSDKLib.fRealDataCallBackEx {
private CbfRealDataCallBackEx() {
}
private static class CallBackHolder {
private static AutoRegisterModule.CbfRealDataCallBackEx instance
= new AutoRegisterModule.CbfRealDataCallBackEx();
}
public static AutoRegisterModule.CbfRealDataCallBackEx getInstance() {
return AutoRegisterModule.CbfRealDataCallBackEx.CallBackHolder.instance;
}
@Override
public void invoke(LLong lRealHandle, int dwDataType, Pointer pBuffer,
int dwBufSize, int param, Pointer dwUser) throws IOException {
int bInput=0;
if(0 != lRealHandle.longValue())
{
switch(dwDataType) {
case 0:
//
System.out.println("码流大小为" + ToolKits.GetPointerDataToByteArr(pBuffer)+ "\n" + "码流类型为原始音视频混合数据");
break;
case 1:
//标准视频数据
break;
case 2:
//yuv 数据
System.out.println("yuv码流大小为" + "\n" + "码流类型为原始音视频混合数据");
break;
case 3:
//pcm 音频数据
break;
case 4:
//原始音频数据
break;
default:
break;
}
}
}
}pBuffer为监视数据块地址 ，dwBufSize 为监视数据块的长度；
现在获取到了pBuffer，该如何转成H264裸码流？
参考的是：https://blog.csdn.net/zb95731/article/details/114282803
但是直接跳过解析的这步，想问问之后该怎么做
你有没有H264解码的JAR包呢？如果没有的话要先找一个。
同问。楼主有思路么
普通sdk接口只会出大华私有码流，配套使用大华playsdk才能播放，如果需要标准流，需要调用CLIENT_RealPlayByDataType接口才能转成标准码流，不过需要大华提供转码库，默认下载不到的
CLIENT_RealPlayByDataType 使用这个方法，然后回调码流类型选用GBPS,PS封装数据包，自己再打上RTP包头，>1400的包分开发送到zlmediakit 10000端口就能生成流，如果光取es裸码流，就解ps包就可以，参考以下javascript代码
//解析 PS 获取Nalus video/audio/streaminfo
static parseMpegPSPacket(buf, offset) {
let position = offset || 0;
//PSM 编码信息
let streaminfo = {};
//PES-video-payload-nalus
let naluscache = Buffer.alloc(0);
//PES-audio-payload
let audiocache = Buffer.alloc(0);
//读取PES
while (buf.length - 6 > position) {
let Identifier = buf.readUInt32BE(position);
position += 4;
if (Identifier == 0x01ba) {
//系统时钟基准（6）+PS复用速率（4）
position += 9;
//填充头长度
let pack_stuffing_length = (buf.readUInt8(position) & 0x07);
position += 1;
position += pack_stuffing_length;
if (position > buf.length)
break;
}
//System Header 0xbb
if (Identifier == 0x01bb) {
//系统标题头长度
let header_length = (buf.readUInt8(position) << 8 | buf.readUInt8(position + 1));
position += 2;
position += header_length;
if (position > buf.length)
break;
}
//PSM 0xbc 解包判断音/视频编码 类型
if (Identifier == 0x01bc) {
//PES-length
let pes_packet_length = (buf.readUInt8(position) << 8 | buf.readUInt8(position + 1));
position += 2;
let program_stream_info_length = buf.readUInt16BE(position + 2);
let elementary_stream_map_length = buf.readUInt16BE(position + 4);
let start = 6 + program_stream_info_length;
let end = 6 + program_stream_info_length + elementary_stream_map_length;
while (start < end) {
let stream_type = buf.readUInt8(position + start++);
let elementary_stream_id = buf.readUInt8(position + start++);
let elmentary_stream_info_length = buf.readUInt8(position + start++) << 8 | buf.readUInt8(position + start++);
if (elementary_stream_id == 0xc0)
streaminfo.audio = stream_type;
if (elementary_stream_id == 0xe0)
streaminfo.video = stream_type;
start += elmentary_stream_info_length;
}
position += pes_packet_length;
if (position > buf.length)
break;
}
if (Identifier >= 0x01e0 && Identifier <= 0x01ef) {
//PES-length
let pes_packet_length = (buf.readUInt8(position) << 8 | buf.readUInt8(position + 1));
position += 2;
//PES packet header
let pes_header_length = buf.readUInt8(position + 2) + 3;
//视频数据
let data = buf.slice(position + pes_header_length, position + pes_packet_length);
naluscache = Buffer.concat([naluscache, data]);
position += pes_packet_length;
if (position > buf.length)
break;
}
if (Identifier >= 0x01c0 && Identifier <= 0x01df) {
//PES-length
let pes_packet_length = (buf.readUInt8(position) << 8 | buf.readUInt8(position + 1));
position += 2;
//PES packet header
let pes_header_length = buf.readUInt8(position + 2) + 3;
//音频数据
let data = buf.slice(position + pes_header_length, position + pes_packet_length);
audiocache = Buffer.concat([audiocache, data]);
position += pes_packet_length;
if (position > buf.length)
break;
}
}
//读取完毕分析nalus
position = 0;
let indexs = [];
//视频Nalues
let nalus = [];
while (naluscache.length - 4 > position) {
if (naluscache.readUInt32BE(position) == 1) {
indexs.push(position);
position += 4;
if (indexs.length > 1) {
let nalu = naluscache.slice(indexs[indexs.length - 2] + 4, indexs[indexs.length - 1]);
nalus.push(nalu);
}
}
position++;
}
if (indexs.length > 0) {
let nalu = naluscache.slice(indexs[indexs.length - 1] + 4);
nalus.push(nalu);
}
return { video: nalus, audio: audiocache, streaminfo: streaminfo };
}
还有一个办法就是解大华私有封包，DHAV--dhav,再从里面取出es裸码流，可以参考https://www.secrss.com/articles/6712
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