STRUCT SND_COMPR_TASK(9)

🌸 NAME 🌸

struct snd_compr_task — the task primitive for non-realtime operation 💅

okay so real talk, this struct is the little task ticket you hand over when you're doing audio compression stuff not in realtime. it's giving "i'll get to it when i get to it" energy, and honestly? iconic.

✨ SYNOPSIS ✨

struct snd_compr_task {
    __u64 seqno;
    __u64 origin_seqno;
    int input_fd;
    int output_fd;
    __u64 input_size;
    __u32 flags;
    __u8 reserved[16];
 };

like, that's the whole shape of it bestie, no cap 🫶

🎀 Members 🎀

time for the vibe check on every single field, let's go 🔥

• seqno — the sequence number, aka the task identifier. this is how you know which task is which. main character energy, fr fr.
• origin_seqno — the previous sequence number (task identifier) — it's there for reuse. so like, a little callback to the task that came before 👑
• input_fd — the data input file descriptor, and specifically it's a dma-buf. note that, bestie, it matters 💖
• output_fd — the data output file descriptor, also a dma-buf. matching set, we love to see it ✨
• input_size — the filled data, in bytes, coming from the caller. ⚠️ and it must not exceed the fragment size — that's not a suggestion, that's a rule 😭
• flags — go check the SND_COMPRESS_TFLG_* defines for what goes in here. iykyk 🦋
• reserved — reserved for future extension. it's literally just sitting there being mysterious and future-proof 💅

🌈 SEE ALSO 🌈

everything else in this little family, because they all hang out together, periodt:

• Kernel file ./include/uapi/sound/compress_offload.h
• struct snd_compressed_buffer(9)
• struct snd_compr_params(9)
• struct snd_compr_tstamp(9)
• struct snd_compr_tstamp64(9)
• struct snd_compr_avail(9)
• struct snd_compr_avail64(9)
• struct snd_compr_caps(9)
• struct snd_compr_codec_caps(9)
• enum sndrv_compress_encoder(9)
• struct snd_compr_metadata(9)
• enum snd_compr_state(9)
• struct snd_compr_task_status(9)

and that's the whole page bestie, you ate that 🍓 this one came from the Kernel file ./include/uapi/sound, dated October 2026 — mwah, go read the source, ily 💜🧚