public void ReceiveAction(DataPackage pkgData)
{
//收到 文件读写请求 的应答【采集器→主机】
Struct_FileHead fileHead = new Struct_FileHead();
Struct_Clock clock = new Struct_Clock();
byte[] dataBuffer = pkgData.PureData;
using (MemoryStream ms = new MemoryStream(dataBuffer))
{
using (BinaryReader br = new BinaryReader(ms))
{
fileHead.Buffer = br.ReadBytes(4); //要读取文件的参数
curDataLen = br.ReadInt32(); //文件长度。为 0 表示文件不存在，后续的内容均应为 0。
clock.Buffer = br.ReadBytes(7); //文件起始时间
byte duration = br.ReadByte(); //文件持续时间长度，秒为单位。对于图片，此值为 0
br.ReadInt32(); //保留字节
macState = 1;
}
}
if (curDataLen > 0)
{
//读取文件数据， 发送读取数据的命令
//创建数据存储文件
curFileName = string.Format("File_{0}.dat", DateTime.Now.ToString("yyyyMMddHHmmss"));
curStream = new FileStream(curFileName, FileMode.Create, FileAccess.Write);
curBinaryWriter = new BinaryWriter(curStream);
SendDataRead(curRecNo, 0);
}
}
//---------------------------------------------------------------------
//读取数据
public void SendDataRead(byte recNo, ushort packID)
{
//发送读取数据命令【主机→采集器】
DataPackage pkgData = new DataPackage();
pkgData.CtrlHead.CMD_ID = HCCommand.DATA_READ;
pkgData.CtrlHead.CE_ID = ceInfo.CE_ID;
Struct_FileHead fileHead = new Struct_FileHead();
fileHead.TriggerType = RecordTriggerType.Manual;
fileHead.FileType = RecordFileType.Image;
fileHead.RecordNO = recNo;
fileHead.opFlag = 0;
using (MemoryStream ms = new MemoryStream())
{
using (BinaryWriter bw = new BinaryWriter(ms))
{
bw.Write(packID); //包序号
bw.Write(fileHead.Buffer);
}
pkgData.PureData = ms.ToArray();
}
pkgData.Pack();
SendData(pkgData);
}
public void ReceiveDataRead(DataPackage pkgData)
{
//收到数据【采集器→主机】
ushort packID = 0;
Struct_FileHead fileHead = new Struct_FileHead();
byte[] dataBuffer = pkgData.PureData;
using (MemoryStream ms = new MemoryStream(dataBuffer))
{
using (BinaryReader br = new BinaryReader(ms))
{
fileHead.Buffer = br.ReadBytes(4); //要读取文件的参数
packID = br.ReadUInt16(); //包序号，0x0000-0xF0EF，0xF0F0 表示最后一帧
int packDataLen = br.ReadUInt16(); //该包数据中图像数据长度，最大 506 字节。
byte[] readBytes = br.ReadBytes(packDataLen);
curReadbytes+= readBytes.Length;
curBinaryWriter.Write(readBytes); //将数据写入本地文件
}
}
if ((packID < 0xF0F0) && curReadbytes < curDataLen)
{
//未结束，继续读取下一包数据
packID++;
SendDataRead(curRecNo, packID);
OnProgress();
}
else
{
//结束，发送确认帧
SendDataACK(curRecNo);
OnProgress();
}
}
void SendFileWrite()
{
//发送 “读取/写入文件”命令 【主机→采集器】
DataPackage pkgData = new DataPackage();
pkgData.CtrlHead.CMD_ID = HCCommand.FILE_RW_REQUEST;
pkgData.CtrlHead.CE_ID = 0;
Struct_FileHead fileHead = new Struct_FileHead();
fileHead.RecordNO = 0;
using (MemoryStream ms = new MemoryStream())
{
using (BinaryWriter bw = new BinaryWriter(ms))
{
bw.Write(fileHead.Buffer); //要查询文件的参数
bw.Write((uint)curDataLen); //文件长度。对读取操作时应填 0。
}
pkgData.PureData = ms.ToArray();
}
pkgData.Pack();
SendData(pkgData);
}
//---------------------------------------------------------------------
//写入数据
public void SendDataWrite(byte recNo, ushort packID)
{
//发送写入数据命令【主机→采集器】
DataPackage pkgData = new DataPackage();
pkgData.CtrlHead.DIR = (uint)E_DIR.DOWN;
pkgData.CtrlHead.FLAG = (uint)E_FLAG.QUERY;
pkgData.CtrlHead.CMD_SET = (uint)E_CMD_SET.NET1;
pkgData.CtrlHead.CMD_ID = HCCommand.DATA_WRITE;
pkgData.CtrlHead.CE_ID = 0;
Struct_FileHead fileHead = new Struct_FileHead();
fileHead.TriggerType = RecordTriggerType.Manual;
fileHead.FileType = RecordFileType.Image;
fileHead.RecordNO = recNo;
fileHead.opFlag = 0;
int pakDataLen = PAK_DATA_LEN; //每包数据长度，最大 506;
byte[] pakBuffer = curBinaryReader.ReadBytes(pakDataLen);
if (pakBuffer.Length <= PAK_DATA_LEN)
{
packID = 0xF0F0; //表示文件结束
}
using (MemoryStream ms = new MemoryStream())
{
using (BinaryWriter bw = new BinaryWriter(ms))
{
bw.Write(fileHead.Buffer);
bw.Write(packID); //包序号，0x0000-0xF0EF，0xF0F0 表示最后一帧
bw.Write((ushort)pakDataLen);
bw.Write(pakBuffer);
}
pkgData.PureData = ms.ToArray();
}
pkgData.Pack();
SendData(pkgData);
}
public void ReceiveDataWrite(DataPackage pkgData)
{
//收到数据【采集器→主机】
ushort packID = 0;
Struct_FileHead fileHead = new Struct_FileHead();
byte[] dataBuffer = pkgData.PureData;
using (MemoryStream ms = new MemoryStream(dataBuffer))
{
using (BinaryReader br = new BinaryReader(ms))
{
packID = br.ReadUInt16(); //包序号，0x0000-0xF0EF，0xF0F0 表示最后一帧
fileHead.Buffer = br.ReadBytes(4); //要读取文件的参数
if (macState == 1) { macState = 2; }
}
}
if (packID < 0xF0F0)
{
//未结束，继续写入下一包数据
packID++;
SendDataWrite(curRecNo, packID);
}
else
{
//结束，发送确认帧
if (macState == 2) { macState = 3; }
SendDataACK(curRecNo);
}
}
public void ReceiveDataReadStream(DataPackage pkgData)
{
//收到实时码流数据【采集器→主机】
ushort packID = 0;
Struct_FileHead fileHead = new Struct_FileHead();
byte[] readBytes = null;
byte[] dataBuffer = pkgData.PureData;
using (MemoryStream ms = new MemoryStream(dataBuffer))
{
using (BinaryReader br = new BinaryReader(ms))
{
fileHead.Buffer = br.ReadBytes(4); //要读取文件的参数
packID = br.ReadUInt16(); //包序号
int packDataLen = br.ReadUInt16(); //该包数据中图像数据长度，最大 506 字节。
readBytes = br.ReadBytes(packDataLen);
}
}
if (readBytes != null && readBytes.Length > 0)
{
if (OnDataChanged != null)
{
//通知主程序处理实时码流数据
StreamHandlerEventArgs eventArgs = new StreamHandlerEventArgs(RunMode.Stream);
eventArgs.OperState = OperationState.StreamReceiving;
eventArgs.Buffer = readBytes;
eventArgs.Value = null;
//if (readBytes.Length == 12)
//{
// //媒体流数据包包头，包含了时间戳以及数据流信息
// Struct_PacketHeader packetHeader = new Struct_PacketHeader(readBytes);
// eventArgs.Value = packetHeader;
//}
//else
//{
// File.WriteAllBytes("H:\\aa", readBytes);
//}
OnDataChanged(this, eventArgs);
}
}
}
