Hi everyone, As many of you know, a big development step in the m:robe port will be getting audio playback through the DSP. We need to use the DSP because the DAC chip is connected exclusively to one of the DSP's peripherals and not accessible directly from the ARM.
Neuros previously used proprietary Linux kernel modules to accomplish this, but "darchon", one of the Neuros hackers, has developed an open-source alternative (http://darchon.net/arm-dsp_bridge/arm-dsp_bridge.html). I don't know if it works, but it looks fairly well-planned and documented. We wouldn't be able to reuse the Linux side of the DSP "bridge" (as they call it) but the DSP-side code should be usable unchanged. Maintaining the same interface would also allow interoperability and accelerate codec development that can be shared by both communities. The only problem is the license. Please take a look at the attached "COPYING" file from https://svn.neurostechnology.com/hackers/darchon/arm-dsp_bridge/bridgelib/COPYING. Can Rockbox use this code? -Cat
COPYING
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