private void ConCatWaveFile(WaveFileReader sou, WaveFileReader des, long startPos, long endPos)
{
// lưu toàn bộ file đích vào temp
WaveFileWriter temp = new WaveFileWriter("temp.wav", des.WaveFormat);
// des.Filename = "";
des.Position = 0;
var end = (int)des.Length;
var buffer = new byte[1024];
while (des.Position < end)
{
var bytesRequired = (int)(end - des.Position);
if (bytesRequired <= 0)
{
continue;
}
var bytesToRead = Math.Min(bytesRequired, buffer.Length);
var bytesRead = des.Read(buffer, 0, bytesToRead);
if (bytesRead > 0)
{
temp.Write(buffer, 0, bytesRead);
}
}
// lưu 1 phần thêm file nguồn vào temp
sou.Position = startPos;
buffer = new byte[1024];
while (sou.Position < endPos)
{
int bytesRequired = (int)(endPos - sou.Position);
if (bytesRequired > 0)
{
int bytesToRead = Math.Min(bytesRequired, buffer.Length);
int bytesRead = sou.Read(buffer, 0, bytesToRead);
if (bytesRead > 0)
{
temp.Write(buffer, 0, bytesRead);
}
}
}
temp.Dispose();
des.Dispose();
// xoá file đích
if (des.Equals(cwvNumber1.WaveStream))
{
CopyWaveFile(fileName1, temp.Filename);
Wave = new WaveFileReader(fileName1);
cwvNumber1.WaveStream = wave;
cwvNumber1.Painting();
cwvNumber1.FitToScreen();
cwvNumber1.WaveStream.Position = 0;
lbMax.Text = wave.TotalTime.Minutes.ToString() + ":" + wave.TotalTime.Seconds.ToString();
lbCur.Text = "0 : 0";
}
else if (des.Equals(cwvNumber2.WaveStream))
{
CopyWaveFile(fileName2, temp.Filename);
Wave = new WaveFileReader(fileName2);
cwvNumber2.WaveStream = wave;
cwvNumber2.Painting();
cwvNumber2.FitToScreen();
cwvNumber2.WaveStream.Position = 0;
lbMax.Text = wave.TotalTime.Minutes.ToString() + ":" + wave.TotalTime.Seconds.ToString();
lbCur.Text = "0 : 0";
}
}
private void DeleteWaveFile(WaveFileReader sou, long startPos, long endPos)
{
// tạo file temp
WaveFileWriter temp = new WaveFileWriter("temp.wav", sou.WaveFormat);
sou.Position = 0;
var buffer = new byte[1024];
// lưu từ đầu đến star
while (sou.Position < startPos)
{
var bytesRequired = (int)(startPos - sou.Position);
if (bytesRequired <= 0)
{
continue;
}
var bytesToRead = Math.Min(bytesRequired, buffer.Length);
var bytesRead = sou.Read(buffer, 0, bytesToRead);
if (bytesRead > 0)
{
temp.Write(buffer, 0, bytesRead);
}
}
// lưu tiêp từ end đên hết
sou.Position = endPos;
while (sou.Position < sou.Length)
{
var bytesRequired = (int)(sou.Length - sou.Position);
if (bytesRequired <= 0)
{
continue;
}
var bytesToRead = Math.Min(bytesRequired, buffer.Length);
var bytesRead = sou.Read(buffer, 0, bytesToRead);
if (bytesRead > 0)
{
temp.Write(buffer, 0, bytesRead);
}
}
// ghi đè lại sou
temp.Dispose();
sou.Dispose();
if (sou.Equals(cwvNumber1.WaveStream))
{
CopyWaveFile(fileName1, temp.Filename);
Wave = new WaveFileReader(fileName1);
cwvNumber1.WaveStream = wave;
cwvNumber1.Painting();
cwvNumber1.FitToScreen();
cwvNumber1.WaveStream.Position = 0;
lbMax.Text = wave.TotalTime.Minutes.ToString() + ":" + wave.TotalTime.Seconds.ToString();
lbCur.Text = "0 : 0";
}
else if (sou.Equals(cwvNumber2.WaveStream))
{
CopyWaveFile(fileName2, temp.Filename);
Wave = new WaveFileReader(fileName2);
cwvNumber2.WaveStream = wave;
cwvNumber2.Painting();
cwvNumber2.FitToScreen();
cwvNumber2.WaveStream.Position = 0;
lbMax.Text = wave.TotalTime.Minutes.ToString() + ":" + wave.TotalTime.Seconds.ToString();
lbCur.Text = "0 : 0";
}
}
private bool SaveAudioFiles(string baseDir, Func <int, string, bool> progressDelegate = null)
{
if (progressDelegate == null)
{
progressDelegate = (p, m) => false;
}
var count = AudioSegmentsByAudioFileDictionary.Keys.Count(key => AudioSegmentsByAudioFileDictionary[key].Any());
var index = 0;
foreach (var audioFileName in AudioSegmentsByAudioFileDictionary.Keys.Where(key => AudioSegmentsByAudioFileDictionary[key].Any()))
{
if (progressDelegate((100 * index) / count, $"Saving audio file {audioFileName}"))
{
return(false);
}
index++;
if (AudioSegmentsByAudioFileDictionary[audioFileName].Count == 1)
{
var audSeg = AudioSegmentsByAudioFileDictionary[audioFileName].First();
if (audSeg.AudioFileDuration < audSeg.ClipEnd)
{
throw new InvalidOperationException(
$"Audio segment clip-end {audSeg.ClipEnd} is beyond the end of audio file {audSeg.AudioFile}");
}
if (audSeg.AudioFileDuration < audSeg.ClipEnd.Add(AllowedFileEndAudio))
{
File.Copy(Uri.UnescapeDataString(AudioSegmentsByAudioFileDictionary[audioFileName][0].AudioFile.LocalPath), Path.Combine(baseDir, audioFileName));
continue;
}
}
Stream underlyingStream = new FileStream(Path.Combine(baseDir, audioFileName), FileMode.Create, FileAccess.ReadWrite);
byte[] byteSuffix = null;
try
{
Stream audioStream;
WaveFormat waveFormat;
var firstAudioPath = Uri.UnescapeDataString(
AudioSegmentsByAudioFileDictionary[audioFileName].First().AudioFile.LocalPath);
switch (AudioFileExtension)
{
case ".mp3":
using (var mp3Fr = new Mp3FileReader(firstAudioPath))
{
waveFormat = mp3Fr.WaveFormat;
audioStream = new LameMP3FileWriter(
underlyingStream,
waveFormat,
8 * mp3Fr.Mp3WaveFormat.AverageBytesPerSecond / 1000);
if (mp3Fr.Id3v2Tag != null)
{
underlyingStream.Write(mp3Fr.Id3v2Tag.RawData, 0, mp3Fr.Id3v2Tag.RawData.Length);
}
byteSuffix = mp3Fr.Id3v1Tag?.ToArray();
}
break;
case ".wav":
waveFormat = new WaveFileReader(firstAudioPath).WaveFormat;
audioStream = new WaveFileWriter(underlyingStream, new WaveFileReader(firstAudioPath).WaveFormat);
break;
default:
throw new NotSupportedException($"Audio file extension {AudioFileExtension} is not supported");
}
try
{
foreach (var segment in AudioSegmentsByAudioFileDictionary[audioFileName])
{
using (var audioReader =
GetAudioPcmStream(Uri.UnescapeDataString(segment.AudioFile.LocalPath)))
{
if (!waveFormat.Equals(audioReader.WaveFormat))
{
throw new NotSupportedException(
$"Audio file {segment.AudioFile} has different wave format from first audio file in segment");
}
audioReader.Seek(
(long)(segment.ClipBegin.TotalSeconds * audioReader.WaveFormat.SampleRate) * audioReader.WaveFormat.BlockAlign,
SeekOrigin.Current);
var bytesToRead =
(long)(segment.Duration.TotalSeconds * audioReader.WaveFormat.SampleRate) * audioReader.WaveFormat.BlockAlign;
var totalBytesRead = 0;
var buf = new byte[10 * 1024];
while (totalBytesRead < bytesToRead)
{
var byteCount = (int)Math.Min(bytesToRead - totalBytesRead, buf.Length);
var bytesRead = audioReader.Read(buf, 0, byteCount);
totalBytesRead += bytesRead;
audioStream.Write(buf, 0, bytesRead);
}
}
}
}
finally
{
audioStream?.Flush();
}
}
finally
{
if (byteSuffix != null)
{
underlyingStream.Write(byteSuffix, 0, byteSuffix.Length);
}
underlyingStream.Close();
}
}
return(true);
}
