On Thu, 2013-04-18 at 15:26 +0200, Damir Jeli? wrote: > Hi. > > For those who don't know, I'm Damir Jeli? from Croatia and I would like to > work on the "Resampling Improvements" project during this year's Summer of > Code. > > Last year I participated and finished the "Latency offset" project. After > the summer I tried to become a regular contributor. For those who are > interested, all my contributions can be seen in the git log [1]. > > I know I said that last year should be my final year as a student but I > prolonged my studies for a year and I'm still eligible for this year's > Summer of Code. > > I picked this project because it's a part of pulseaudio that I consider > quite interesting and didn't had the chance to touch yet. > > I have some DSP background (although more from control theory than from > digital audio) and also I have some assembly background, but not from any > modern instruction set (z80), which should make me a good candidate for this > project. > > What I would like to do over the summer: > - enable resampling with libav > - write some test coverage for the libav resampling method > - deprecate the ffmpeg resample method > - update the speex resample method > > The ideas page mentions also libresample, if I'm not mistaken pulseaudio > already supports resampling via libresample and I'm not sure what would I > need to do about this. By "libresample", I guess you mean "libsamplerate". Peter can correct me if I'm intepreting him wrong, but my understanding is that libsamplerate was only mentioned as an example of a resampler with a problematic license. I don't know either what should be done about it - perhaps the idea was to compare the different resamplers, and if it turns out that we don't have any good reason to keep using libsamplerate, we could drop that code. > Speex has been obsoleted [2] and the resampler seems to had been moved to > opus-tools. There are some interesting commits [3] inside this repo and I think > it would be nice to update our speex resample method although I'm not sure > if it's ok to drop speex and replace it with opus-tools just like that. To me replacing the speex resampler with the opus-tools resampler sounds like an obvious thing to do, if the upstream says that the speex resampler code is deprecated in favour of opus-tools. -- Tanu --------------------------------------------------------------------- Intel Finland Oy Registered Address: PL 281, 00181 Helsinki Business Identity Code: 0357606 - 4 Domiciled in Helsinki This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.
