On 6/4/2012 1:52 μμ, Jurgen Kramer wrote: > The attached patch fixes playback for DSD-over-USB. Without this patch > MPD uses a frame size of 2 (stereo files) while the actual needed frame > size for the used output sample format is 8 (sample formats S24_P32 and > S32). > > Maybe this is not the proper/complete solution but will at least allow > users to test the current DSD-over-USB code and hopefully provides some > clues for the actual fixes (if needed). > Below some more background info. > > --- > src/output/alsa_output_plugin.c | 7 ++++++- > 1 files changed, 6 insertions(+), 1 deletions(-) > > Jurgen > > > Background: > For SAMPLE_FORMAT_DSD in- and out frame sizes are 2 (stereo files). When > using DSD2PCM the sample format is set to SAMPLE_FORMAT_FLOAT which has > a frame sizes of 8. For DSD-over-USB the sample format remains on > SAMPLE_FORMAT_DSD with a frame size of 2 which results in too little > data (4x) being sent to the receiving audio device. >
I just ran a quick test and DSD over USB playback is working fine with this patch on my XMOS board. Thanks. ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Musicpd-dev-team mailing list Musicpd-dev-team@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/musicpd-dev-team
