private void ParseBuffer()
{
int protoBufLength = (FileContent[0] << 24) | (FileContent[1] << 16) | (FileContent[2] << 8) | FileContent[3];
if (protoBufLength > 0x10000)
{
throw new InvalidDataException();
}
byte[] protoBuf = new byte[protoBufLength];
int payloadStart = protoBufLength + 4;
int payloadLength = FileContent.Length - payloadStart;
byte[] payload = new byte[payloadLength];
Array.Copy(FileContent, 4, protoBuf, 0, protoBufLength);
Array.Copy(FileContent, protoBufLength + 4, payload, 0, payloadLength);
var coder = new ProtoCoder();
FileHeader header = coder.Deserialize <FileHeader>(protoBuf);
var prov = new SHA1CryptoServiceProvider();
var hash = prov.ComputeHash(payload);
HashCorrect = true;
if (!hash.SequenceEqual(header.Hash))
{
HashCorrect = false;
}
byte[] data = coder.Serialize(header);
HeaderLength = data.Length;
Audio = payload;
Header = header;
}
private void WriteHeader()
{
int expectedSize = 0x1000 - 4;
/* set protobuf header size */
FileContent[0] = (byte)(expectedSize >> 24);
FileContent[1] = (byte)(expectedSize >> 16);
FileContent[2] = (byte)(expectedSize >> 8);
FileContent[3] = (byte)(expectedSize >> 0);
/* first use one byte padding */
Header.Padding = new byte[1];
var stream = new MemoryStream();
var coder = new ProtoCoder();
byte[] dataPre = coder.Serialize <FileHeader>(Header);
/* then determine how many extra bytes to fill */
long padding = expectedSize - dataPre.Length;
Header.Padding = new byte[padding];
byte[] data = coder.Serialize <FileHeader>(Header);
Array.Copy(data, 0, FileContent, 4, data.Length);
}
private void AddObject <T>(T obj) where T : class
{
Type destObjectType = obj.GetType();
var objFields = destObjectType.GetFields();
ulong field = 1;
for (int pos = 0; pos < objFields.Length; pos++)
{
var objField = objFields[pos];
var objFieldType = objField.FieldType;
if (objField.CustomAttributes.Where(a => a.AttributeType.Name == "SkipEncodeAttribute").Count() != 0)
{
continue;
}
if (objFieldType.IsArray)
{
if (objFieldType.Name == "Byte[]")
{
AddStringField(field, (byte[])objField.GetValue(obj));
}
else
{
ProtoCoder subCoder = new ProtoCoder();
switch (objFieldType.Name)
{
case "Int16[]":
((Int16[])objField.GetValue(obj)).ToList().ForEach(v => subCoder.AddVariant((ulong)v));
break;
case "Int32[]":
((Int32[])objField.GetValue(obj)).ToList().ForEach(v => subCoder.AddVariant((ulong)v));
break;
case "Int64[]":
((Int64[])objField.GetValue(obj)).ToList().ForEach(v => subCoder.AddVariant((ulong)v));
break;
case "UInt16[]":
((UInt16[])objField.GetValue(obj)).ToList().ForEach(v => subCoder.AddVariant((ulong)v));
break;
case "UInt32[]":
((UInt32[])objField.GetValue(obj)).ToList().ForEach(v => subCoder.AddVariant((ulong)v));
break;
case "UInt64[]":
((UInt64[])objField.GetValue(obj)).ToList().ForEach(v => subCoder.AddVariant((ulong)v));
break;
}
byte[] data = subCoder.Payload.ToArray();
AddStringField(field, data);
}
}
else
{
switch (objFieldType.Name)
{
case "Boolean":
AddVariantField(field, ((Boolean)objField.GetValue(obj)) ? 1 : 0);
break;
case "Byte":
AddVariantField(field, (Byte)objField.GetValue(obj));
break;
case "Int16":
AddVariantField(field, (Int16)objField.GetValue(obj));
break;
case "Int32":
AddVariantField(field, (Int32)objField.GetValue(obj));
break;
case "Int64":
AddVariantField(field, (Int64)objField.GetValue(obj));
break;
case "UInt16":
AddVariantField(field, (UInt16)objField.GetValue(obj));
break;
case "UInt32":
AddVariantField(field, (UInt32)objField.GetValue(obj));
break;
case "UInt64":
AddVariantField(field, (UInt64)objField.GetValue(obj));
break;
default:
Console.WriteLine("Unexpected type '" + objFieldType.Name + "'");
break;
}
}
field++;
}
}
