STRUCT SND_FIREWIRE_MOTU_COMMAND_DSP_METER(9)

💅 struct snd_firewire_motu_command_dsp_meter(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — yes we're reading kernel headers together, this is our life now, and honestly? iconic.

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🌸 NAME 🌸

struct snd_firewire_motu_command_dsp_meter — the container for meter information in DSP controlled by command 🎚️✨

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🎀 SYNOPSIS 🎀

ok so here's the literal struct, no cap, copy it exactly bestie:

struct snd_firewire_motu_command_dsp_meter {
  #ifdef __KERNEL__;
    __u32 data[SNDRV_FIREWIRE_MOTU_COMMAND_DSP_METER_COUNT];
  #else;
    float data[SNDRV_FIREWIRE_MOTU_COMMAND_DSP_METER_COUNT];
  #endif;
 };

the way this thing has two versions of data depending on whether you're in __KERNEL__ or not… it's giving duality 💀 but it's fine, it's fine, we move.

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🦋 Members 🦋

• data — signal level meters 💖 the mapping between position and signal channel is model-dependent, so like… don't assume, okay? 🙈
• data — signal level meters 💖 the mapping between position and signal channel is model-dependent. yes it's listed again. no I'm not messing with you, the manpage really does say it twice. we keep the facts, we keep the duplicates, periodt. 👑

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✨ Description ✨

so the structure expresses the part of DSP status for hardware meter 🎛️ — like, the meter part specifically, not the whole DSP vibe.

the 32-bit storage is estimated to include an IEEE 764 32-bit single precision floating point (binary32) value 👩‍💻 ngl that's the whole personality of this struct.

and it's expected to be a linear value — not logarithm — for audio signal level between 0.0 and +1.0 📈 so like, zero to one, linear, that's the range bestie, don't come at it with dB, that's not the assignment 🫶

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🔥 SEE ALSO 🔥

• Kernel file ./include/uapi/sound/firewire.h struct snd_firewire_event_ff400_message(9) 🌈
• struct snd_firewire_motu_register_dsp_meter(9) ⭐
• struct snd_firewire_motu_register_dsp_parameter(9) 💜

like, go read your siblings, they're right there, iykyk 💅

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🧚 friendly reminder from your girl: every option, member, value and reference up there is verbatim from the original. the vibe is new, the facts are untouched. slay 🌈

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and that's the whole page babes 🎀 source file lives at ./include/uapi/sound, dated October 2026, manual name struct snd_f...nd_dsp_meter(9) — go off, you ate this one 👑💖