On Fri, 2017-09-08 at 12:52 +0200, Clemens Ladisch wrote: > Jörg Krause wrote: > > Tested with a Wolfson WM8524 DAC on a i.MX6UL board running Linux version > > 4.13.0-next-20170907. > > + case SND_PCM_FORMAT_S24_LE: > > + /* 24bit samples, fallthrough */ > > case SND_PCM_FORMAT_S32_LE: > > S24_LE cannot be handled with the same algorithm as S32_LE. That would have been too easy. > I suspect that the hardware does not actually use S24_LE, and > that the driver uses the wrong label for this format. Maybe you are right about that. I will have a look. > Please describe exactly how the 24-bit sample is aligned into > the 32-bit memory cell. According to this old post [1] it is aligned as followed: 00ffff3f 00ffff3f 00ebd96e 00ebd96e 00ffff7f 00ffff7f Meaning the left-most byte is zeroed, right? [1] http://mailman.alsa-project.org/pipermail/alsa-devel/2008-July/0090 99.html Best regards, Jörg Krause _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
