将流保存到c#和winrt中的文件中
我在c#和winrt:
var stream = await speech.GetSpeakStreamAsync(SpeechText.Text, language);
stream
是一个Windows.Storage.Streams.IRandomAccessStream
所以我对c#和winrt完全不熟悉。 我如何将包含wav文件的流保存到文件中? 在此先感谢Basilius
IRandomAccessStream有一个名为GetInputStreamAt的方法http://msdn.microsoft.com/en-US/library/windows/apps/windows.storage.streams.irandomaccessstream
IInputStream inputStream = stream.GetInputStreamAt(0);
这会让你获得一个IInputStream。
IInputStream接口只定义一个方法ReadAsync,它允许您将字节读入IBuffer对象。 Windows.Storage.Stream还包括一个基于IInputStream对象创建的DataReader类,然后从流中读取大量.NET对象以及字节数组。 http://www.charlespetzold.com/blog/2011/11/080203.html,http://msdn.microsoft.com/library/windows/apps/BR208119
using (var stream = new InMemoryRandomAccessStream()) { // for example, render pdf page var pdfPage = document.GetPage((uint)i); await pdfPage.RenderToStreamAsync(stream); // then, write page to file using (var reader = new DataReader(stream)) { await reader.LoadAsync((uint)stream.Size); var buffer = new byte[(int)stream.Size]; reader.ReadBytes(buffer); await Windows.Storage.FileIO.WriteBytesAsync(file, buffer); } }
现在你有一个包含所有读取字节的缓冲区。
您现在可以将此缓冲区保存到文件http://blog.jerrynixon.com/2012/06/windows-8-how-to-read-files-in-winrt.html
var file = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync("MyWav.wav", Windows.Storage.CreationCollisionOption.ReplaceExisting); await Windows.Storage.FileIO.WriteBytesAsync(file, buffer);
我无法将代码添加到注释中,因此这里是vb.net中的代码:Dim gesprochenesWort As Windows.Storage.Streams.IRandomAccessStream gesprochenesWort = Await Sprich.GetSpeakStreamAsync(“Das ist ein Beispieltext”,“de”)
Dim Eingabestream As Windows.Storage.Streams.IInputStream = gesprochenesWort.GetInputStreamAt(0) Dim Datenleser As New Windows.Storage.Streams.DataReader(Eingabestream) Await Datenleser.LoadAsync(CUInt(gesprochenesWort.Size)) 'Dim Dateipuffer As Byte() = New Byte(CInt(gesprochenesWort.Size) - 1) {} Dim Dateipuffer(gesprochenesWort.Size - 1) As Byte Datenleser.ReadBytes(Dateipuffer) Dim Dateiname As String = "MybestWav.wav" Dim Datei = Await Windows.Storage.KnownFolders.MusicLibrary.CreateFileAsync(Dateiname, Windows.Storage.CreationCollisionOption.ReplaceExisting) Await Windows.Storage.FileIO.WriteBytesAsync(Datei, Dateipuffer)
非常感谢你。
最好的问候,Basilius