Microsoft Emotions API, RecognizeInVideoAsync c#
本文关键字:RecognizeInVideoAsync API Emotions Microsoft | 更新日期: 2023-09-27 18:13:26
我试图通过在视频中使用识别来使用微软情感Api,所以我下载了客户端库并尝试使用它,但是当我调试时,它只是没有任何例外地走出来,我想它可能是一个线程问题-它发生在方法中:"recognizeInVideoAsync"。
我代码:public static async void testEmotionApi()
{
var emotionServiceClient = new EmotionServiceClient("c580db97556e405980212f3ff31ac762");
VideoEmotionRecognitionOperation videoOperation;
using (var fs = new FileStream(@"D:'Downloads'testForApp.mp4", FileMode.Open))
{
videoOperation = await emotionServiceClient.RecognizeInVideoAsync(fs);
}
VideoOperationResult operationResult;
while (true)
{
operationResult = await emotionServiceClient.GetOperationResultAsync(videoOperation);
if (operationResult.Status == VideoOperationStatus.Succeeded || operationResult.Status == VideoOperationStatus.Failed)
{
break;
}
Task.Delay(30000).Wait();
}
var emotionRecognitionJsonString = operationResult.ToString();
}
这就是c#中异步编程的工作方式。而在源形式,你似乎有一个单一的方法,在实践中,该方法被分割成多个部分在await
边界。换句话说,正如您所编写的,testEmotionApi方法在调用RecognizeInVideoAsync
后返回。方法的其余部分将在异步调用完成时执行,但是您无法等待该结果。你可以这样做:
public static async Task<VideoOperationResult> testEmotionApi()
{
// everything here the same, except...
return operationResult;
}
public async Task callEmotionTestApi()
{
VideoOperationResult result = await testEmotionApi();
...
}
或者,如果你不希望调用者是异步的,
public void callEmotionTestApi()
{
VideoOperationResult result = testEmotionApi().GetAwaiter().GetResult();
...
}