private void writeToVideoStream(DateTime time, DataType type, byte[] buffer)
{
if (type != DataType.StopSign)
{
StreamPacket data = new StreamPacket(time, type, buffer);
byte[] block = StreamPacket.Encode(data);
writeBuffer(_fsStream, block);
}
}
private static StreamPacket readStreamPacket(Stream fs)
{
try
{
byte[] buffer = readStream(fs);
return(StreamPacket.Decode(buffer));
}
catch { }
return(null);
}
public static byte[] Encode(StreamPacket data)
{
using (MemoryStream ms = new MemoryStream())
{
PacketBase.WriteBytes(ms, data.Time);
PacketBase.WriteBytes(ms, (int)data.Type);
PacketBase.WriteBytes(ms, data.Buffer.Length);
PacketBase.WriteBytes(ms, data.Buffer);
return(ms.ToArray());
}
}
public static VideoStreamsPacket Decode(MemoryStream ms)
{
TimePeriodPacket ti = TimePeriodPacket.Decode(ms);
int length = PacketBase.ReadInt(ms);
StreamPacket[] spList = new StreamPacket[length];
for (int i = 0; i < length; i++)
{
spList[i] = StreamPacket.Decode(ms);
}
return(new VideoStreamsPacket(ti, spList));
}
public static byte[] Encode(VideoStreamsPacket packet)
{
using (MemoryStream ms = new MemoryStream())
{
PacketBase.WriteBytes(ms, TimePeriodPacket.Encode(packet.TimePeriod));
PacketBase.WriteBytes(ms, packet.VideoStreams.Length);
for (int i = 0; i < packet.VideoStreams.Length; i++)
{
PacketBase.WriteBytes(ms, StreamPacket.Encode(packet.VideoStreams[i]));
}
return(ms.ToArray());
}
}
/// <summary>
/// 获取某文件夹下某段时间内首个视频头文件
/// </summary>
/// <param name="folder">文件夹路径</param>
/// <param name="beginTime">起始时间</param>
/// <param name="endTime">结束时间</param>
/// <returns>视频头</returns>
public static StreamPacket GetVideoHeader(string folder, DateTime beginTime, DateTime endTime)
{
StreamPacket header = null;
string[] files = GetIndexesFiles(folder);
if (files.Length > 0)
{
TimePeriodPacket validTi = new TimePeriodPacket(beginTime, endTime);
TimePeriodPacket[] tis = FolderManager.GetTimePeriods(folder);
if (TimePeriodManager.GetIntersections(tis, validTi).Length != 0)
{
foreach (var file in files)
{
header = FileManager.GetVideoHeader(GlobalProcess.GetRecFileName(file));
if (header != null)
{
break;
}
}
}
}
return(header);
}
public void Set(DateTime time, DataType type, byte[] buffer)
{
lock (_lockObj)
{
_curStream = new StreamPacket(time, type, buffer);
switch (type)
{
case DataType.SysHead:
_header = buffer;
closeFile();
break;
case DataType.StopSign:
closeFile();
break;
case DataType.StreamDataKey:
case DataType.StreamData:
writeToFile();
break;
}
}
}
public void Set(StreamPacket packet)
{
Set(packet.Time, packet.Type, packet.Buffer);
}
public RecorderBase(string path)
{
_filePath = path;
_curStream = new StreamPacket(DateTime.MinValue, DataType.StopSign, new byte[0]);
}