internal static ReadOnlySpan <byte> JT808DeEscape(ReadOnlySpan <byte> buf)
{
var bytes = JT808ArrayPool.Rent(buf.Length);
try
{
int i = 0;
int offset = 0;
int len = 0 + buf.Length;
while (i < len)
{
if (buf[i] == 0x7d)
{
if (len > i + 1)
{
if (buf[i + 1] == 0x01)
{
bytes[offset++] = 0x7d;
i++;
}
else if (buf[i + 1] == 0x02)
{
bytes[offset++] = 0x7e;
i++;
}
else
{
bytes[offset++] = buf[i];
}
}
}
else
{
bytes[offset++] = buf[i];
}
i++;
}
return(bytes.AsSpan(0, offset).ToArray());
}
finally
{
JT808ArrayPool.Return(bytes);
}
}
public void Dispose()
{
JT808ArrayPool.Return(escapeBytesPoll);
}