static void Main(string[] args)
{
string path = @"C:\Users\kielbkam\Desktop\semestr 6\emedia\emedia\emedia\";
string originalFIle = "Yamaha-V50-Rock-Beat-120bpm.wav";
string encodedFile = "encodedWAVFile.wav";
string decodedFile = "decodedWAVFile.wav";
WAVFile wavFile = new WAVReader(path + originalFIle).ReadWAVFile(false);
wavFile.DisplayHeader();
WAVFile cipheredWavFile = wavFile;
Cipher cipher = new Cipher();
double[] encoded = cipher.getCipheredData(cipheredWavFile.Data);
Data dataModifiyer = new Data();
cipheredWavFile.Data = dataModifiyer.Normalize(encoded);
WAVWriter wavWriter = new WAVWriter(path + encodedFile);
wavWriter.WriteWAVFile(cipheredWavFile);
WAVFile decipheredWavFile = new WAVReader(path + encodedFile).ReadWAVFile(true);
double[] decipheredFloats = dataModifiyer.Denormalize(decipheredWavFile.Data);
decipheredWavFile.Data = cipher.getDecipheredData(decipheredFloats);
WAVWriter wavWriterForDecoded = new WAVWriter(path + decodedFile);
wavWriterForDecoded.WriteWAVFile(decipheredWavFile);
Console.WriteLine("Finished");
Console.ReadKey();
}
public WAVFile ReadWAVFile(bool isEncoded)
{
WAVFile wavFile = new WAVFile();
using (FileStream fs = new FileStream(this.pathToWAVFile, FileMode.Open))
{
BinaryReader binaryReader = new BinaryReader(fs);
wavFile.ChunkId = ConvertIntToString(ReverseEndianness(binaryReader.ReadInt32()));
wavFile.ChunkSize = binaryReader.ReadUInt32();
wavFile.Format = ConvertIntToString(ReverseEndianness(binaryReader.ReadInt32()));
wavFile.Subchunk1ID = ConvertIntToString(ReverseEndianness(binaryReader.ReadInt32()));
wavFile.Subchunk1Size = binaryReader.ReadUInt32();
wavFile.AudioFormat = binaryReader.ReadUInt16();
wavFile.NumChannels = binaryReader.ReadUInt16();
wavFile.SampleRate = binaryReader.ReadUInt32();
wavFile.ByteRate = binaryReader.ReadUInt32();
wavFile.BlockAlign = binaryReader.ReadInt16();
wavFile.BitsPerSample = binaryReader.ReadUInt16();
wavFile.Subchunk2ID = ConvertIntToString(ReverseEndianness(binaryReader.ReadInt32()));
wavFile.Subchunk2Size = binaryReader.ReadUInt32();
// jesli enkodujemy to musimy zwiekszyc rozmiar ramki danych samego pliku WAVE.
// W naszym przypadku jest to double (8 bajtow) dlatego sam rozmiar mnozymi razy sizeof(double).
wavFile.Data = isEncoded == true?
binaryReader.ReadBytes((int)wavFile.Subchunk2Size * 8) :
binaryReader.ReadBytes((int)wavFile.Subchunk2Size);
}
return(wavFile);
}
public void WriteWAVFile(WAVFile wavFile)
{
using (FileStream fs = new FileStream(this.pathToWAVFile, FileMode.OpenOrCreate))
{
BinaryWriter binaryWriter = new BinaryWriter(fs);
binaryWriter.Write(ReverseEndianness(ConvertStringToInt(wavFile.ChunkId)));
binaryWriter.Write(wavFile.ChunkSize);
binaryWriter.Write(ReverseEndianness(ConvertStringToInt(wavFile.Format)));
binaryWriter.Write(ReverseEndianness(ConvertStringToInt(wavFile.Subchunk1ID)));
binaryWriter.Write(wavFile.Subchunk1Size);
binaryWriter.Write((UInt16)wavFile.AudioFormat);
binaryWriter.Write((UInt16)wavFile.NumChannels);
binaryWriter.Write(wavFile.SampleRate);
binaryWriter.Write(wavFile.ByteRate);
binaryWriter.Write((Int16)wavFile.BlockAlign);
binaryWriter.Write((UInt16)wavFile.BitsPerSample);
binaryWriter.Write(ReverseEndianness(ConvertStringToInt(wavFile.Subchunk2ID)));
binaryWriter.Write(wavFile.Subchunk2Size);
binaryWriter.Write(wavFile.Data);
}
}
