How can I config a WinRT component when using msInsertVideoEffect??

Question

When I transform a MFT to a WinRT component and plugin it with function msInsertVideoEffect. Because I can't get the instance, how could I pass the parameters for configuration with interface IInspectable?? If Javascript can't do this, does any way to do this with other programming language??

Answer 1

Kenny,

The MediaPlugins sample shows how to configure an effect:

in CustomEfect.js, see the function:

function getPolarEffectStartFunc(effectName) {
return function () {
// Set video element's source
var vid = WinJS.Utilities.query("#customEffectVideo")[0],
src = null;

if (vid.readyState !== 0) {
src = vid.src;
}
vid.pause();
// Installing video effect with configuration in property set.
var effect = new Windows.Foundation.Collections.PropertySet();
effect["effect"] = effectName;
vid.msClearEffects();
vid.msInsertVideoEffect("Microsoft.Samples.PolarEffect", true, effect);
if (src) {
vid.src = src;
} else {
sdkSample.pickMediaFile([".mp4", ".wmv", ".avi"], [vid]);
}
};
}

This allows you to set that property.

 

-Jeff

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Jeff Sanders (MSFT)

Answer 2

Thanks for replying, but I still have a question. How the component get the value of the property set?? Does My MFT class need to inherit the interface IPropertyset and implement it or ??

Answer 3

Hi Kenny,

Your object should implement Windows.Media.IMediaExtension.  Then when you pass the propertyset (like in the sample) the SetProperty() method will be called.

-Jeff

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Jeff Sanders (MSFT)