在内存流之后释放编写器

本文关键字:释放 之后 内存 | 更新日期: 2023-09-27 17:59:27

这是我的代码片段:

private static MemoryStream outputStream;

public static void ConvertMp3ToWavStream(string inputPath)
        {                           
            outputStream = new MemoryStream();
            using (Mp3FileReader reader = new Mp3FileReader(inputPath))
            {
                using (WaveStream waveStream = WaveFormatConversionStream.CreatePcmStream(reader))
                {
                    WaveFileWriter waveFileWriter = new WaveFileWriter(outputStream, waveStream.WaveFormat);
                    byte[] bytes = new byte[waveStream.Length];
                    waveStream.Position = 0;
                    waveStream.Read(bytes, 0, (int)waveStream.Length);
                    waveFileWriter.Write(bytes, 0, bytes.Length);
                    waveFileWriter.Flush();                    
                }
            }                
        }

这是我的CloseAndDispose方法,经过一些操作后我调用它:

private static void CloseAndDispose()
        {
            if (outputStream != null)
            {
                outputStream.Close();
                outputStream.Dispose();
            }
        }

问题:在所有操作之后,我在内存堆栈中有一些内存,这些内存没有被处理掉。据我了解,这是我的writer.当我尝试处理作家时,我得到了一个例外。(无法阅读MemoryStream(。当我尝试在CloseAndDispose()方法后关闭和处置编写器时,出现异常。我应该在哪里关闭waveFileWriter

在内存流之后释放编写器

NAudio 在 NAudio.Utils 命名空间中有一个名为 IgnoreDisposeStream 的帮助程序类。将您的内存流包装在其中一个中,然后再将其传递到WaveFileWriter

using (var writer = new WaveFileWriter(new IgnoreDisposeStream(outputStream),
                                       waveStream.WaveFormat))
{
    ...
}

您可以将本地MemoryStream传递给WaveFileWriter,并在释放之前将其复制到全局:

public static void ConvertMp3ToWavStream(string inputPath)
{                           
    outputStream = new MemoryStream();
    var outputStreamLocal = new MemoryStream();
    using (...
    {        
            using (var waveFileWriter = new WaveFileWriter(outputStreamLocal, ...
            {
                ...
                outputStreamLocal.CopyTo(outputStream);
            }
    }
}