//功能函数
//插入数据
public bool AddPacket(byte[] pData, ushort wDataType)
{
if ((pData.Length + Marshal.SizeOf(m_ttagDataDescribe) + m_wDataSize) > m_wMaxBytes)
{
return(false);
}
//插入数据
tagDataDescribe pDataDescribe = new tagDataDescribe();
pDataDescribe.wDataSize = (ushort)pData.Length;
pDataDescribe.wDataDescribe = wDataType;
var buf = StructConverterByteArray.StructToBytes(pDataDescribe);
Buffer.BlockCopy(buf, 0, m_pcbBuffer, m_wDataSize, buf.Length);
//tagDataDescribe* pDataDescribe = (tagDataDescribe*)(m_pcbBuffer + m_wDataSize);
//pDataDescribe->wDataSize = wDataSize;
//pDataDescribe->wDataDescribe = wDataType;
//插入数据
if (pData.Length > 0)
{
Buffer.BlockCopy(pData, 0, m_pcbBuffer, m_wDataSize + buf.Length, pData.Length);
//memcpy(pDataDescribe + 1, pData, wDataSize);
}
//设置数据
m_wDataSize += (ushort)(buf.Length + pData.Length);
return(true);
}
//构造函数
//功能函数
public byte[] GetData(ref tagDataDescribe DataDescribe)
{
//效验数据
if (m_wDataPos >= m_wDataSize)
{
DataDescribe.wDataSize = 0;
DataDescribe.wDataDescribe = DTP_NULL;//无效数据
return(null);
}
//获取数据
var structSize = Marshal.SizeOf(m_ttagDataDescribe);
byte[] buf = new byte[structSize];
Buffer.BlockCopy(m_pcbBuffer, m_wDataPos, buf, 0, structSize);
DataDescribe = (tagDataDescribe)StructConverterByteArray.BytesToStruct(buf, m_ttagDataDescribe);
//memcpy(&DataDescribe, m_pcbBuffer + m_wDataPos, sizeof(tagDataDescribe));
//ASSERT((m_wDataPos + sizeof(tagDataDescribe) + DataDescribe.wDataSize) <= m_wDataSize);
//效验数据
if ((m_wDataPos + structSize + DataDescribe.wDataSize) > m_wDataSize)
{
DataDescribe.wDataSize = 0;
DataDescribe.wDataDescribe = DTP_NULL;
return(null);
}
//设置数据
byte[] pData = null;
if (DataDescribe.wDataSize > 0)
{
pData = new byte[DataDescribe.wDataSize];
Buffer.BlockCopy(m_pcbBuffer, m_wDataPos + structSize, pData, 0, DataDescribe.wDataSize);
//pData = m_pcbBuffer + m_wDataPos + structSize;
}
m_wDataPos += (ushort)(structSize + DataDescribe.wDataSize);
return(pData);
}