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Plugin for format conversion, how to develop it?
steel_monkey
post Dec 10 2012, 15:35
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Hello.
I want to ask help about plug in development. As I see, it is not tons of work to do, but as I am quite new to PC programming, it represents big and, most problem, time consuming action.

I am developing external DAC unit using not conventional sound integrated circuits, but industrial ones. Don`t ask why, answer will be "because" wink.gif .

Industrial DACs have little different input format by comparison with sound ICs, i.e. most significant bit is inverted. As I am going to use PC as a source of digital data, it is easier to convert format there, as it is more flexible. So, the question is, how to invert MSB in audio stream? I see a foobar plugin will be quite elegant solution. In MCU I would have XORed data with required mask, but I am total noob in PC programming, unfortunately.

Another question is, I will change sample rate using foobar plugin to, so MSB inversion should be done after digital filtering.

After that, data is sent to USB using asio4all.
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