UWP使用AudioGraph播放.aif文件

Question

我試圖播放聲音與音頻圖形，並且它無法從存儲文件創建文件輸出節點。我已檢查並且存儲文件不爲空;我得到的錯誤只是未知的錯誤，並沒有幫助

任何想法？

private async void HandlePlayCommand() 
{ 
    if (_audioGraph == null) 
    { 
     var settings = new AudioGraphSettings(AudioRenderCategory.Media); 
     var createResults = await AudioGraph.CreateAsync(settings); 
     if (createResults.Status != AudioGraphCreationStatus.Success) return; 

     _audioGraph = createResults.Graph; 

     var deviceResult = await _audioGraph.CreateDeviceOutputNodeAsync(); 
     if(deviceResult.Status != AudioDeviceNodeCreationStatus.Success) return; 

     var outputNode = deviceResult.DeviceOutputNode; 
     StorageFile file = await GetStorageFiles(); 

     var fileResult = await _audioGraph.CreateFileInputNodeAsync(file); 
     if (fileResult.Status != AudioFileNodeCreationStatus.Success) return; 

     var fileInputNode = fileResult.FileInputNode; 

     fileInputNode.AddOutgoingConnection(outputNode); 


     _audioGraph.Start(); 
    } 
} 

private async Task<StorageFile> GetStorageFiles() 
{ 
    string CountriesFile = @"Assets\909_1.aif"; 
    StorageFolder InstallationFolder = Windows.ApplicationModel.Package.Current.InstalledLocation; 
    StorageFile file = await InstallationFolder.GetFileAsync(CountriesFile); 

    return file; 
} 

Answer 1

通過測試在我身邊，我怕.aif格式目前不AudioGraph.CreateFileInputNodeAsync方法支持。確定支持的格式爲.mp3,.wav,.wna,.m4a等。所以解決方案可能會將音頻文件更改爲其他格式。請參考audio official sample。