增大和减小音量 [英] Increasing and decreasing volume

问题描述

我正在使用 Interop.QuartzTypeLib dll 创建视频播放器.

在那如何增加和减少音量.

IBasicAudio在那里，但是如何使用它来改变音量.

如果有人知道，请告诉我.

Hi,

I am Creating a Video Player using Interop.QuartzTypeLib dll.

In that How to increase and decrease volume.

IBasicAudio is there but how to use that to change the volume.

If any one knows tell me.

推荐答案

您好，

Daniel Strigl早在2003年就写过一篇关于它的文章...
C#中的DirectShow MediaPlayer [

Hello,

Daniel Strigl wrote an article about it back in 2003...
DirectShow MediaPlayer in C#[^]

It will probably need a bit of updating, but otherwise it answers your question.

As reported by ssyuvaraja the article does not tell you how to adjust the sound. Thankfully this is really easy.

Look at the code of the article and use this object:

m_objBasicAudio = m_objFilterGraph as IBasicAudio;

并修改声音:

And to modify the sound:

m_objBasicAudio.Volume = volume; // from -10 to 0

可以在MSDN上找到更多详细信息:
http://msdn.microsoft.com/en-us/site/ms782294#controllingaudio [ ^ ]

瓦莱里.

More details can be found on MSDN:
http://msdn.microsoft.com/en-us/site/ms782294#controllingaudio[^]

Valery.

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