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path: root/lib/rbcodec/dsp/dsp.c
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2012-04-29Fundamentally rewrite much of the audio DSP.Michael Sevakis1-1568/+0
Creates a standard buffer passing, local data passing and messaging system for processing stages. Stages can be moved to their own source files to reduce clutter and ease assimilation of new ones. dsp.c becomes dsp_core.c which supports an engine and framework for effects. Formats and change notifications are passed along with the buffer so that they arrive at the correct time at each stage in the chain regardless of the internal delays of a particular one. Removes restrictions on the number of samples that can be processed at a time and it pays attention to destination buffer size restrictions without having to limit input count, which also allows pcmbuf to remain fuller and safely set its own buffer limits as it sees fit. There is no longer a need to query input/output counts given a certain number of input samples; just give it the sizes of the source and destination buffers. Works in harmony with stages that are not deterministic in terms of sample input/output ratio (like both resamplers but most notably the timestretch). As a result it fixes quirks with timestretch hanging up with certain settings and it now operates properly throughout its full settings range. Change-Id: Ib206ec78f6f6c79259c5af9009fe021d68be9734 Reviewed-on: http://gerrit.rockbox.org/200 Reviewed-by: Michael Sevakis <jethead71@rockbox.org> Tested-by: Michael Sevakis <jethead71@rockbox.org>
2012-04-27rbcodec refactoring: dsp_set_eq_coefsSean Bartell1-7/+2
dsp_set_eq_coefs now has parameters for the band settings, so it doesn't need to access global_settings. Change-Id: I29ac19fc353b15a79cb25f0e45132aef0881e4c9 Reviewed-on: http://gerrit.rockbox.org/138 Reviewed-by: Nils Wallménius <nils@rockbox.org>
2012-04-26Consolidate compressor settings into a struct.Michael Sevakis1-2/+2
Doing that makes things cleaner for later on. Change-Id: I4e279aa57ace16a348acc0fc09059592325ec95f
2012-03-18Build librbcodec with DSP and metadata.Sean Bartell1-0/+1573
All associated files are moved to /lib/rbcodec. Change-Id: I572ddd2b8a996aae1e98c081d06b1ed356dce222