如何将NAudio WaveStream写入内存流？

Question

我有一个程序,它接收一个字节数组中的mp3数据.它必须将mp3数据转换为wav格式并将其存储在字节数据中.我正在尝试将NAudio用于此目的.我为此目的使用以下代码.

Stream inputStream = ...;
Stream outputStream = ...;

using (WaveStream waveStream = WaveFormatConversionStream.CreatePcmStream(new Mp3FileReader(inputStream)))
using (WaveFileWriter waveFileWriter = new WaveFileWriter(outputStream, waveStream.WaveFormat))
{
    byte[] bytes = new byte[waveStream.Length];
    waveStream.Read(bytes, 0, waveStream.Length);
    waveFileWriter.WriteData(bytes, 0, bytes.Length);
    waveFileWriter.Flush();
}

当我运行上面的代码时,我收到的所有字节数组都是0.但是如果使用WaveFileWriter将数据直接写入文件,该文件将接收正确的数据.有什么原因？

Answer 1

尝试一下:

using (WaveStream waveStream = WaveFormatConversionStream.CreatePcmStream(new Mp3FileReader(inputStream))) 
using (WaveFileWriter waveFileWriter = new WaveFileWriter(outputStream, waveStream.WaveFormat)) 
{ 
    byte[] bytes = new byte[waveStream.Length]; 
    waveStream.Position = 0;
    waveStream.Read(bytes, 0, waveStream.Length); 
    waveFileWriter.WriteData(bytes, 0, bytes.Length); 
    waveFileWriter.Flush(); 
}