void DevChannelHK::onPreview(DWORD dwDataType, BYTE* pBuffer, DWORD dwBufSize) {
//TimeTicker1(-1);
switch (dwDataType) {
case NET_DVR_SYSHEAD: { //系统头数据
if (!PlayM4_GetPort(&m_iPlayHandle)) { //获取播放库未使用的通道号
WarnL << "PlayM4_GetPort:" << NET_DVR_GetLastError();
break;
}
if (dwBufSize > 0) {
if (!PlayM4_SetStreamOpenMode(m_iPlayHandle, STREAME_REALTIME)) { //设置实时流播放模式
WarnL << "PlayM4_SetStreamOpenMode:" << NET_DVR_GetLastError();
break;
}
if (!PlayM4_OpenStream(m_iPlayHandle, pBuffer, dwBufSize,
1024 * 1024)) { //打开流接口
WarnL << "PlayM4_OpenStream:" << NET_DVR_GetLastError();
break;
}
PlayM4_SetDecCallBackMend(m_iPlayHandle,
[](int nPort,char * pBuf,int nSize,FRAME_INFO * pFrameInfo, void* nUser,int nReserved2) {
DevChannelHK *chn=reinterpret_cast<DevChannelHK *>(nUser);
if(chn->m_iPlayHandle!=nPort) {
return;
}
chn->onGetDecData(pBuf,nSize,pFrameInfo);
}, this);
if (!PlayM4_Play(m_iPlayHandle, 0)) { //播放开始
WarnL << "PlayM4_Play:" << NET_DVR_GetLastError();
break;
}
InfoL << "设置解码器成功！" << endl;
//打开音频解码, 需要码流是复合流
if (!PlayM4_PlaySoundShare(m_iPlayHandle)) {
WarnL << "PlayM4_PlaySound:" << NET_DVR_GetLastError();
break;
}
}
}
break;
case NET_DVR_STREAMDATA: { //流数据（包括复合流或音视频分开的视频流数据）
if (dwBufSize > 0 && m_iPlayHandle != -1) {
if (!PlayM4_InputData(m_iPlayHandle, pBuffer, dwBufSize)) {
WarnL << "PlayM4_InputData:" << NET_DVR_GetLastError();
break;
}
}
}
break;
case NET_DVR_AUDIOSTREAMDATA: { //音频数据
}
break;
case NET_DVR_PRIVATE_DATA: { //私有数据,包括智能信息
}
break;
default:
break;
}
}
BOOL CPlayerHik::PlaySoundShare()
{
return PlayM4_PlaySoundShare(m_nPort);
}