[pulseaudio-tickets] [Bug 80770] module-loopback ignores latency_msec option

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80770

--- Comment #6 from Raymond <superquad.vortex2 at gmail.com> ---
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/oxygen/oxygen_pcm.c?id=93943beb29be7084afb61556e96bc454079bfb0e

only a few sound cards support disable period wakeup

seem have lower period bytes minimum 64 than hda-Intel 128


err = snd_pcm_hw_constraint_step(runtime, 0,
                     SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
    if (err < 0)
        return err;
    err = snd_pcm_hw_constraint_step(runtime, 0,
                     SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);


https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/hda_intel.c?id=2ae66c26550cd94b0e2606a9275eb0ab7070ad0e

does intel hda really support arbitrary period sizes since Fifo size is fixed

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