public static StreamPacket Decode(MemoryStream ms)
{
DateTime time = PacketBase.ReadTime(ms);
DataType type = (DataType)PacketBase.ReadInt(ms);
int length = PacketBase.ReadInt(ms);
byte[] buf = PacketBase.ReadByteArray(ms, length);
return(new StreamPacket(time, type, buf));
}
public static VideoBasePacket Decode(Stream ms)
{
DateTime time = PacketBase.ReadTime(ms);
int headLen = PacketBase.ReadInt(ms);
byte[] header = PacketBase.ReadByteArray(ms, headLen);
long length = PacketBase.ReadLong(ms);
return(new VideoBasePacket(header, time, length));
}
public static HikHeaderPacket Decode(MemoryStream ms)
{
int videoType = PacketBase.ReadInt(ms);
if (videoType != (int)VideoType.Hik)
{
return(null);
}
int streamId = PacketBase.ReadInt(ms);
string streamName = PacketBase.ReadString(ms);
string streamUrl = PacketBase.ReadString(ms);
int type = PacketBase.ReadInt(ms);
int length = PacketBase.ReadInt(ms);
byte[] buffer = PacketBase.ReadByteArray(ms, length);
return(new HikHeaderPacket(streamId, streamName, streamUrl, type, buffer));
}
private void readPacket(Stream ms)
{
int length = PacketBase.ReadInt(ms);
int code = PacketBase.ReadInt(ms);
byte[] buffer = PacketBase.ReadByteArray(ms, length - 4);
switch ((ParamCode)code)
{
case ParamCode.VideoBaseInfo:
if (buffer.Length > 20 && (VideoBase == null || VideoBase.Length == 0))
{
VideoBase = VideoBasePacket.Decode(buffer);
}
break;
case ParamCode.TimePeriods:
TimePeriods = VideoTimePeriodsPacket.Decode(buffer);
break;
case ParamCode.DownloadBase:
DownloadInfo = DownloadInfoParam.Decode(buffer);
break;
}
}
private static byte[] readStream(Stream ms)
{
int length = readInt(ms);
return(PacketBase.ReadByteArray(ms, length - 4));
}
