播放独立存储中的媒体文件

发布于 2024-09-28 22:54:57 字数 910 浏览 2 评论 0原文

我正在从 Web 服务读取保存为字节流的 wav 文件，并希望在显示我的记录时播放它。电话 7 应用程序。

我的方法是在导航到记录时将字节流保存到独立存储中的 wav 文件，然后在单击按钮并播放时将媒体播放器 (MediaElement1) 的源设置为该源。

下面是我的“PlayButton”中当前的代码。（大小与字节流匹配，但没有音频结果）。如果我将流设置为作为资源存储的 WAV 文件，它确实可以工作，所以也许我只需要知道如何将 Uri 设置为独立存储文件。

（例如以下代码有效）

Mediaelement1.Source = new Uri("SampleData\\MyMedia.wav",UriKind.Relative) Works
Mediaelement1.Position = new TimeSpan(0,0,0,0) ;
Mediaelement1.Play() ;

这是我的代码示例...有什么想法吗？

IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication() ;
IsolatedStorageFileStream str = new IsolatedStorageFileStream(
    "MyMedia.wav", FileMode.Open, isf) ;
long size = str.Length;
mediaelement mediaelement = new MediaElement() ;
mediaelement.SetSource(str) ;
mediaElement1.Source = mediaelement.Source ;
mediaElement1.Position = new TimeSpan(0, 0, 0, 0);
mediaElement1.Play();

原文

I am reading a wav file saved as a byte stream from a web service and want to play it back when my record is displayed. Phone 7 app.

My approach has been to save the byte stream to a wav file in isolated storage upon navigating to the record and subsequently set the source of my media player (MediaElement1) to that source when a button is clicked and play it back.

Below is my current code in my "PlayButton". (size matches byte stream but no audio results). If I set the stream to a WAV file stored as a resource it does work so perhaps I just need to know how to set the Uri to the Isolated storage file.

(e.g. following code works)

Mediaelement1.Source = new Uri("SampleData\\MyMedia.wav",UriKind.Relative) Works
Mediaelement1.Position = new TimeSpan(0,0,0,0) ;
Mediaelement1.Play() ;

Here is my code sample... any ideas?

IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication() ;
IsolatedStorageFileStream str = new IsolatedStorageFileStream(
    "MyMedia.wav", FileMode.Open, isf) ;
long size = str.Length;
mediaelement mediaelement = new MediaElement() ;
mediaelement.SetSource(str) ;
mediaElement1.Source = mediaelement.Source ;
mediaElement1.Position = new TimeSpan(0, 0, 0, 0);
mediaElement1.Play();

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最后的乘客 2024-10-05 22:54:57

您不必创建 2 个媒体元素。只需直接在 mediaElement1 上调用 .SetSource 即可。

我有类似的代码，将 MediaElement 源设置为独立存储中的电影，并且工作正常：

using (var isf = IsolatedStorageFile.GetUserStoreForApplication())
{
    using (var isfs = new IsolatedStorageFileStream("trailer.wmv", FileMode.Open, isf))
    {
        this.movie.SetSource(isfs);
    }
}

通过上面的代码，movie 是我已经在 XAML 中创建的 MediaElement 并将 autoPlay 设置为 true。

当我第一次让它工作时，我确实遇到了一些问题。

我建议尝试以下操作来帮助调试：

确保文件已正确且完整地写入隔离存储。
处理 MediaFailed 事件以找出它不工作的原因。

You shouldn't have to create 2 media elements. Just call .SetSource on mediaElement1 directly.

I have similar code which sets the MediaElement source to a movie in isolated storage and that works fine:

using (var isf = IsolatedStorageFile.GetUserStoreForApplication())
{
    using (var isfs = new IsolatedStorageFileStream("trailer.wmv", FileMode.Open, isf))
    {
        this.movie.SetSource(isfs);
    }
}

With the above, movie is a MediaElement I've already created in XAML and set autoPlay to true.

I did have a few issues with the above when first getting it working.

I suggest trying the following to help debug:

Ensure that the file has been written to isolated storage correctly and in it's entirety.
Handle the MediaFailed event to find out why it isn't working.

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