amdtp_am824_set_parameters(9)
π amdtp_am824_set_parameters(9) β from the Kernel API Manual, bestie π
okay so picture this: you're in the Linux kernel docs, the Kernel API Manual specifically, and you've stumbled onto this little function. it's called amdtp_am824_set_parameters, and honestly? it's giving "settings adjuster" and we're obsessed. β¨
β¨ NAME β¨
amdtp_am824_set_parameters β set stream parameters, that's literally the whole job π«Ά
πΈ SYNOPSIS πΈ
int amdtp_am824_set_parameters (struct amdtp_stream *s , unsigned int
rate , unsigned int pcm_channels , unsigned int midi_ports , bool
double_pcm_frames );
π¦ ARGUMENTS π¦
sβ the AMDTP stream to configure. this is your main character, the thing you're setting up πrateβ the sample rate. yes bestie, the rate. π΅pcm_channelsβ the number of PCM samples in each data block, and these get encoded as AM824 multi-bit linear audio. say that five times fast, i dare you πmidi_portsβ the number of MIDI ports (i.e., MPX-MIDI Data Channels). MIDI girlies rise πΉdouble_pcm_framesβ one data block transfers two PCM frames. that's the whole vibe of this flag, two frames, one block, slay π
π DESCRIPTION π
so here's the tea: The parameters must be set before the stream is started, and must not be changed while the stream is running. like, no cap, do it before you hit start. once that stream is running, hands off β changing stuff mid-run is not the move π
β οΈ for real though: set it up first, then start. not the other way around. that's the one rule and it's non-negotiable, periodt π
π₯ SEE ALSO π₯
- Kernel file
./sound/firewire/amdtp-am824.cβ go read the source, it's literally right there π amdtp_am824_set_pcm_position(9)amdtp_am824_set_midi_position(9)amdtp_am824_add_pcm_hw_constraints(9)amdtp_am824_midi_trigger(9)amdtp_am824_init(9)
these are the siblings, the friend group, the whole little am824 crew π go check them out too, iykyk
and that's the page, bestie! π big kiss to ./sound/firewire for hosting this iconic little corner of the kernel, dated October 2026 β and yeah, the whole thing is filed under amdtp_am824_set_parameters(9) so you can find your way back anytime. mwah πβ¨
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms