STRUCT SND_COMPR(9)

💖 struct snd_compr(9) 💖

okay bestie, so this one's from the Kernel API Manual and it's literally all about struct snd_compr — the compressed device. like, the whole vibe is "audio that's been squished down and needs a driver to unsquish it." it's giving kernel-internals main character energy and honestly? we're obsessed 🎀

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✨ NAME ✨

struct snd_compr — compressed device, no cap 💅

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🌸 SYNOPSIS 🌸

struct snd_compr {
    const char *name;
    struct device *dev;
    struct snd_compr_ops *ops;
    void *private_data;
    struct snd_card *card;
    unsigned int direction;
    struct mutex lock;
    int device;
    bool use_pause_in_draining;
  #ifdef CONFIG_SND_VERBOSE_PROCFS;
 };

like yes, that #ifdef CONFIG_SND_VERBOSE_PROCFS; line is sitting there looking a little unhinged, but bestie we do not touch it. we copy it exactly. periodt 🫶

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🦋 Members 🦋

• name — the DSP device name. it's the device's whole identity, its little name tag at the party 🏷️
• dev — the associated device instance, aka the actual device buddy this struct is linked up with 💞
• ops — pointer to the DSP callbacks. this is where the function pointers live, iykyk 🔥
• private_data — pointer to the DSP private data, the driver's own little stash of secrets 🙈
• card — sound card pointer. that's your snd_card, the mama card of the whole operation 👑
• direction — playback or capture direction. pick a lane, bestie 🎧
• lock — the device lock, a struct mutex, here to keep everything from getting messy ✨
• device — the device id, its number, its whole identifier situation 🔢
• use_pause_in_draining — allow pause in draining, true when set. yes that's really the field name and yes it's iconic 💀

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🌈 SEE ALSO 🌈

kernel file ./include/sound/compress_driver.h — plus these absolute legends:

• struct snd_compr_task_runtime(9)
• struct snd_compr_runtime(9)
• struct snd_compr_stream(9)
• struct snd_compr_ops(9)
• snd_compr_use_pause_in_draining(9)
• snd_compr_set_runtime_buffer(9)

go read them, they're all linked up in the same friend group fr fr 🧚

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💀 quick vibe check: that #ifdef CONFIG_SND_VERBOSE_PROCFS; inside the struct is exactly how the page shows it. not me fixing it, not you fixing it. we leave it. that's the rule 💅

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and that's the whole page, bestie! this one comes to you straight from ./include/sound, dated October 2026 — so like, future vibes only ⭐ mwah, go forth and compress responsibly 💜