private static void Main()
{
var mp3InputDto = new Mp3InputDto
{
BeginCut = 0,
EndCut = 1,
Mp3Path = @"D:\mp3\20191215_ori.mp3"
};
var mp3Cutter = new Service.Mp3Cutter();
var mp3OutputDto = mp3Cutter.ExecuteCut(mp3InputDto);
System.Console.WriteLine(mp3OutputDto.Mp3OutputFileName);
}
public Mp3OutputDto ExecuteCut(Mp3InputDto mp3InputDto)
{
int totalFrameCount = GetTotalFrameCount(mp3InputDto.Mp3Path);
int totalTimeLength = GetTotalTimeLength(mp3InputDto.Mp3Path);
frameProSec = GetFrameProSec(totalFrameCount, totalTimeLength);
var mp3OutputDto = this.SetMp3OutputDto(mp3InputDto.Mp3Path);
Directory.CreateDirectory(mp3OutputDto.OutputDir);
CuttingMp3(mp3InputDto, mp3OutputDto);
return(mp3OutputDto);
}
private Mp3InputDto CreateInput()
{
int beginHours = Int32.Parse(txtBeginHour.Text);
int beginMinutes = Int32.Parse(txtBeginMinute.Text);
int beginSeconds = Int32.Parse(txtBeginSecond.Text);
int endHours = Int32.Parse(txtEndHour.Text);
int endMinutes = Int32.Parse(txtEndMinute.Text);
int endSeconds = Int32.Parse(txtEndSecond.Text);
var mp3Input = new Mp3InputDto();
mp3Input.BeginCut = beginHours * 3600 + beginMinutes * 60 + beginSeconds;
mp3Input.EndCut = endHours * 3600 + endMinutes * 60 + endSeconds;
mp3Input.Mp3Path = txtMp3FileName.Text;
return(mp3Input);
}
private void CuttingMp3(Mp3InputDto mp3InputDto, Mp3OutputDto mp3OutputDto)
{
int beginCount = (int)Math.Round(mp3InputDto.BeginCut * frameProSec);
int endCount = (int)Math.Round(mp3InputDto.EndCut * frameProSec);
FileStream writer = null;
Action createWriter = new Action(() =>
{
writer = File.Create(mp3OutputDto.Mp3OutputFileName);
});
int totalFrameCount = 0;
using (var reader = new Mp3FileReader(mp3InputDto.Mp3Path))
{
Mp3Frame frame;
while ((frame = reader.ReadNextFrame()) != null)
{
if (writer == null)
{
createWriter();
}
if (totalFrameCount > beginCount && totalFrameCount < endCount)
{
++totalFrameCount;
continue;
}
writer.Write(frame.RawData, 0, frame.RawData.Length);
++totalFrameCount;
}
if (writer != null)
{
writer.Dispose();
}
}
}
