//Ecris dans un fichier depuis un WAV
public static void WriteFile(string path, DataHeader Header, byte[] Buffer)
{
FileStream fileStream = new FileStream(path, FileMode.Create);
BinaryWriter writer = new BinaryWriter(fileStream);
//Ecrire le chunk de base
writer.Write(Header.FileTypeID);
writer.Write(Header.FileLenght);
writer.Write(Header.MediaTypedID);
//Ecrire le chunck du format
writer.Write(Header.ChunkIDFormat);
writer.Write(Header.ChunkSizeFormat);
writer.Write(Header.FormatTag);
writer.Write(Header.Channels);
writer.Write(Header.Frequency);
writer.Write(Header.AverageBytesPerSec);
writer.Write(Header.BlockAlign);
writer.Write(Header.BitsPerSample);
//Ecrire le chunck de données
writer.Write(Header.ChunkIDData);
writer.Write(Header.ChunkSizeData);
foreach(byte dataPoint in Buffer)
{
writer.Write(dataPoint);
}
//Fermeture des streams
writer.Close();
fileStream.Close();
}
private DataHeader CreateHeader(short formatAudio, short channels, int frequency, short bitspersample)
{
DataHeader tmp = new DataHeader();
tmp.FileTypeID = "RIFF".ToCharArray();
tmp.MediaTypedID ="WAVE".ToCharArray();
tmp.ChunkIDFormat = "fmt ".ToCharArray();
tmp.ChunkIDData = "data".ToCharArray();
tmp.ChunkSizeFormat = 16;
tmp.FormatTag = formatAudio;
tmp.Channels = channels;
tmp.Frequency = frequency;
tmp.BitsPerSample = bitspersample;
tmp.BlockAlign = (short) (tmp.Channels * (tmp.BitsPerSample / 8));
tmp.AverageBytesPerSec = tmp.Frequency * tmp.BlockAlign;
return tmp;
}
private DataHeader CreateHeader(short formatAudio, short channels, int frequency, short bitspersample)
{
DataHeader tmp = new DataHeader();
tmp.FileTypeID = "RIFF".ToCharArray();
tmp.MediaTypedID = "WAVE".ToCharArray();
tmp.ChunkIDFormat = "fmt ".ToCharArray();
tmp.ChunkIDData = "data".ToCharArray();
tmp.ChunkSizeFormat = 16;
tmp.FormatTag = formatAudio;
tmp.Channels = channels;
tmp.Frequency = frequency;
tmp.BitsPerSample = bitspersample;
tmp.BlockAlign = (short)(tmp.Channels * (tmp.BitsPerSample / 8));
tmp.AverageBytesPerSec = tmp.Frequency * tmp.BlockAlign;
return(tmp);
}
public WAV(string name, Stream wavFile)
{
//Constructeur
Name = name;
StreamWAV = wavFile;
Header = new DataHeader();
Log = ReadBuffer();
if (Passed)
{
Samples = new float[Buffer.Length];
for (int i = 0; i < Buffer.Length - 1; i++)
{
Samples[i] = BitConverter.ToInt16(Buffer, i);
}
}
Player = new WAVPlay(name);
}
//Mets à jour les infos du WAV
private void updateInfos(ref DataHeader header)
{
if (!wav.Passed)
{
MessageBox.Show(wav.Log + ".\nVeuillez sélectionné un autre fichier.", "Format du fichier", MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
lblFileName.Content = Filename.Substring(Filename.LastIndexOf('\\') + 1);
lblFormat.Content = new string(header.MediaTypedID, 0, 4);
lblSize.Content = Constants.SizeSuffix(header.FileLenght);
lblAudioFormat.Content = "PCM";
if (header.Channels > 1)
lblChannels.Content = "Stéréo";
else
lblChannels.Content = "Mono";
lblBitrate.Content = Constants.SizeSuffix(header.AverageBytesPerSec) + "/s";
lblSamplingRate.Content = header.BitsPerSample;
txtBlockLog.Text = wav.Log;
DrawSignal();
}
