Has anyone successfully built a Media Foundation based Audio DSP Plugin which is able to process protected media I have heard rumors that it is not possible.
Is it possible to build a Media Foundation Audio DSP Plugin?
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Is it possible to build a Media Foundation Audio DSP Plugin?
GMan5309
Nick is kind of right... If we allowed anyone to write such a DSP, then it would gain access to the content and they could do whatever they want with it.
However, it is possible to get licensed to write MF Transforms to run in the Protected Environment. There's some process to go through with MS (which I can tell you about if you think you're going to want to do this... let me know) to get your code signed such that it will be able to process protected content.
It is, however, true that anyone can write a DSP plugin that will do stuff on clear (unprotected) content.
TinSoldier
Being able to write an audio plugin that works on protected content would presume that you can get access to the uncompressed data from that protected content. That means you could easily write a plugin that takes in audio data from the protected file and dumps it to disk as a wave file. I'm guessing Microsoft/RIAA/Sony/BMG/etc would not be happy with that.
-Nick