c# - 如何将NAudio WaveStream写入内存流？

我有一个程序，以字节数组形式接收mp3数据。它必须将mp3数据转换为wav格式并将其存储为字节数据。我试图为此目的使用NAudio。我为此使用以下代码。

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，我收到的所有内容在字节数组中均为0。但是，如果使用WaveFileWriter将数据直接写入文件，则该文件将接收正确的数据。有什么原因吗？

最佳答案

试试看:

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();
}