可以从Windows服务调用DirectShow [英] Can DirectShow be called from a windows service

问题描述

我可以从服务中调用DirectShow还是需要会话/登录？ 我已经看到几个帖子说DirectX和MCI需要一个会话，而且这些帖子在注销时无法在服务中运行。

Can I call DirectShow from a service or is a session / login necessary?  I've seen several posts that say a session is required for DirectX and MCI and that those will not work in a service when logged out.

这里有一些关于我正在做什么的背景信息。  ;我们有一个传统的C ++服务，其中包括使用waveOutOpen来播放wave文件。 我需要更改服务，以便播放mp3文件。  waveOutOpen不会播放mp3文件。 
我很确定我可以使用ACM api来解压缩/转换mp3数据然后继续使用waveOutOpen但是我的经理宁愿我找到一种直接和本地播放mp3的方法而不首先转换它。 如果可能的话，我被要求避免使用
的第三方库，例如LAME。 这就是我开始关注DirectShow的原因。

Here's some background about what I am doing.  We have a legacy C++ service that among other things, uses waveOutOpen to play wave files.  I need to change the service so mp3 files can be played too.  waveOutOpen will not play mp3 files.  I am pretty sure I could use the ACM api to decompress / convert the mp3 data then continue to use waveOutOpen but my manager would rather me find a way to play mp3 directly and natively without converting it first.  I have been asked to avoid the use of third party libraries such as LAME if possible.  That is why I am starting to look at DirectShow.

Kevin Jones

Kevin Jones

推荐答案

你不需要DirectShow的交互式会话。将支持DirectShow的应用程序作为服务运行很好。

You don't need an interactive session for DirectShow. Running your DirectShow-enabled application as a service is fine.

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