STRUCT JPU_BUFFER(9)

💖 NAME 💖

struct jpu_buffer — bestie, it's the driver's own little video buffer, like, the driver-specific glow-up of a video buffer ✨

So this is the 9 section manual page for struct jpu_buffer, which lives in the Kernel API Manual — and yes, it's giving "niche but iconic" fr fr 🎀

🌸 SYNOPSIS 🌸

okay so here's the whole struct laid out, no cap, copy it exactly:

struct jpu_buffer {
    struct v4l2_m2m_buffer buf;
    unsigned short  compr_quality;
    unsigned char   subsampling;
 };

three members, that's the whole vibe. she's compact 💅

🦋 Members 🦋

• buf — the m2m buffer itself, literally the whole memory-to-memory moment 🫶
• compr_quality — the destination image quality, but only when you're in compression mode. it's unsigned short, and yes that matters bestie 😭
• subsampling — the source image subsampling, and this one only kicks in during decompression mode. unsigned char energy 🌈

lowkey important: compr_quality is a compression-mode thing and subsampling is a decompression-mode thing. don't mix them up, i'm begging 🙈

⭐ SEE ALSO ⭐

go read these next, iykyk 👑

• Kernel file ./drivers/media/platform/renesas/rcar_jpu.c struct jpu(9)
• struct jpu_fmt(9)
• struct jpu_q_data(9)
• struct jpu_ctx(9)

and that's the page!! 🍓 this cutie is brought to you by ./drivers/media/platform/renesas, dated October 2026, and she's filed under struct jpu_buffer(9) — go forth and slay your video buffers bestie 💜🧚‍♀️