On Fri, 2011-12-09 at 15:04 +0100, Max Kellermann wrote: > On 2011/12/09 14:55, Jurgen Kramer <gtmkra...@xs4all.nl> wrote: > > Hi, > > > > There are now several DACs which support native DSD plackback using the > > 'dCS DSD' spec. I've crafted a mpd decoder module, based on the > > dsdiff_decoder_pluging and dsd2pcm available in svn, which outputs > > packed DSD. But now I wondering how to go forward with this and get my > > code integrated into mpd. > > Hi Jurgen, > > so what you did was remove the dsdiff_decode_chunk() calls from the > plugin? Or was there anything else?
Hi Max, In de dsdiff_decode_chunk function I made some adjustments to buffer sizes and instead of calling dsd2pcm_translate I've created a dsdnative_translate call. There are some other minor things in dsdiff_decoder_plugin.c to accommodate packed DSD output. I think it would be easy to let both native and dsd2pcm coexist in dsdiff_decoder_plugin.c > > Shall I expend the current dsdiff_decoder_pluging/dsd2pcm code and > > add a decoder configuration option so the user can select native or > > dsd2pcm output? Or add a new decoder? [this is what I currently have > > as a test case] > > For real DSD playback support, one needs to add a new sample_format to > audio_format.h (including the string parser/formatter), hook > dsd2pcm_translate() into the PCM conversion library to allow > conversion from DSD to any PCM format. > > When that is done, add support for that new format to an output > plugin. If the capability is not available in the driver, the output > plugin should probe for another sample format, and let the > convert_filter_plugin do the conversion. OK, I think I have some work/research to do :-). I hope I fully understand what needs to be done. BTW this this mean the current dsdiff_decoder_plugin is not considered real DSD playback? Thanks, Jurgen ------------------------------------------------------------------------------ Cloud Services Checklist: Pricing and Packaging Optimization This white paper is intended to serve as a reference, checklist and point of discussion for anyone considering optimizing the pricing and packaging model of a cloud services business. Read Now! http://www.accelacomm.com/jaw/sfnl/114/51491232/ _______________________________________________ Musicpd-dev-team mailing list Musicpd-dev-team@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/musicpd-dev-team
