static bool verifyChecksum(int start, int end, byte[] arrayBytes)
{
int originalValue = BitConverter.ToInt32(arrayBytes, 22);
arrayBytes[start + 22] = Convert.ToByte(0);
arrayBytes[start + 23] = Convert.ToByte(0);
arrayBytes[start + 24] = Convert.ToByte(0);
arrayBytes[start + 25] = Convert.ToByte(0);
return((originalValue - OggCrc.checksum(0, arrayBytes, start, end - start)) == 0);
}
public static void AppendOggFilesMain()
{
DirectoryInfo di = new DirectoryInfo(urlFolder);
FileInfo[] files = di.GetFiles("*.txt");
byte[] oggs = Encoding.ASCII.GetBytes("OggS");
for (int k = 0; k < files.Length; k++)
{
start:
getDataArray(files[k].FullName);
byte[] file1Bytes;
try
{
file1Bytes = File.ReadAllBytes(getFileNameFromPath(OggFilesArray[0][1], urlFolder));
}
catch (FileNotFoundException e)
{
k++;
if (k >= files.Length)
{
goto end;
}
else
{
goto start;
}
}
List <int> places = FindCharsInArray(file1Bytes, oggs, false);
List <OggPageAdaption> pages = new List <OggPageAdaption>(places.Count);
OggPageAdaption previousOggPageAdaption = new OggPageAdaption(file1Bytes, places[places.Count - 1]);
UInt32 previous_page_sequence_number_uint32 = previousOggPageAdaption.page_sequence_number_uint32;
UInt64 previous_granule_position_u64 = 0;
previous_granule_position_u64 = previousOggPageAdaption.granule_position_u64;
using (FileStream fs = new FileStream(urlFolderOutput + files[k].Name.Substring(0, files[k].Name.Length - 4) + ".ogg", FileMode.Append))
{
fs.Write(file1Bytes, 0, file1Bytes.Length);
for (int j = 1; j < OggFilesArray.Count; j++)
{
byte[] file2Bytes = File.ReadAllBytes(getFileNameFromPath(OggFilesArray[j][1], urlFolder));
List <int> places2 = FindCharsInArray(file2Bytes, oggs, false);
OggPageAdaption newOggPageAdaption = new OggPageAdaption();
for (int i = 0; i < places2.Count; i++)
{
Array.Copy(previousOggPageAdaption.bitstream_serial_number, 0, file2Bytes, places2[i] + 14, 4);
newOggPageAdaption = new OggPageAdaption(file2Bytes, places2[i]);
var finalGranule_position_u64 = newOggPageAdaption.granule_position_u64 + previous_granule_position_u64;
byte[] finalGranule_position = BitConverter.GetBytes(finalGranule_position_u64);
Array.Copy(finalGranule_position, 0, file2Bytes, places2[i] + 6, 8);
var newPage_sequence_number_uint32 = previous_page_sequence_number_uint32;
if (i > 1)
{
newPage_sequence_number_uint32 = previous_page_sequence_number_uint32 + 1;
}
var newPage_secuence_number = BitConverter.GetBytes(newPage_sequence_number_uint32);
Array.Copy(newPage_secuence_number, 0, file2Bytes, places2[i] + 18, 4);
previous_page_sequence_number_uint32 = newPage_sequence_number_uint32;
int end = 0;
int start = places2[i];
if (i >= places2.Count - 1)
{
end = file2Bytes.Length - 1;
}
else
{
end = places2[i + 1];
}
if (i >= places2.Count - 1)
{
end = file2Bytes.Length;
}
file2Bytes[places2[i] + 22] = Convert.ToByte(0);
file2Bytes[places2[i] + 23] = Convert.ToByte(0);
file2Bytes[places2[i] + 24] = Convert.ToByte(0);
file2Bytes[places2[i] + 25] = Convert.ToByte(0);
int checkSum = OggCrc.checksum(0, file2Bytes, start, end - start);
byte[] crc = BitConverter.GetBytes(checkSum);
file2Bytes[places2[i] + 22] = crc[0];
file2Bytes[places2[i] + 23] = crc[1];
file2Bytes[places2[i] + 24] = crc[2];
file2Bytes[places2[i] + 25] = crc[3];
}
previous_granule_position_u64 = previous_granule_position_u64 + newOggPageAdaption.granule_position_u64;
fs.Write(file2Bytes, places2[2], file2Bytes.Length - places2[2]);
previousOggPageAdaption = newOggPageAdaption;
File.Move(urlFolder + getFileNameFromPath(OggFilesArray[j][1], ""), urlFolder + "archive/" + getFileNameFromPath(OggFilesArray[j][1], ""));
}
}
files[k].MoveTo(urlFolder + "archive/" + files[k].Name);
}
end : int a = 1;
}