STRUCT MTK_JPEG_CTX(9)

💖 struct mtk_jpeg_ctx(9) 💖

okay so bestie, welcome to the Kernel API Manual — this little cutie is struct mtk_jpeg_ctx, and it's literally the device context data. that's the whole vibe. it's the main character struct that holds all the state for one JPEG device context 🎀

✨ SYNOPSIS ✨

struct mtk_jpeg_ctx {
    struct mtk_jpeg_dev             *jpeg;
    struct mtk_jpeg_q_data          out_q;
    struct mtk_jpeg_q_data          cap_q;
    struct v4l2_fh                  fh;
    enum mtk_jpeg_ctx_state         state;
    bool enable_exif;
    u8 enc_quality;
    u8 restart_interval;
    struct v4l2_ctrl_handler ctrl_hdl;
    struct work_struct jpeg_work;
    u32 total_frame_num;
    struct list_head dst_done_queue;
    spinlock_t done_queue_lock;
    u32 last_done_frame_num;
 };

no cap, that's the whole struct 💅

🌸 Members 🌸

okay so member by member, here's the tea:

• jpeg — the JPEG IP device for this context. like, the actual hardware bae this whole thing belongs to 🫶
• out_q — source (output) queue information
• cap_q — destination queue information
• fh — the V4L2 file handle
• state — the state of the context (iykyk, it's giving "where are we at rn")
• enable_exif — enables exif mode of the jpeg encoder ✨
• enc_quality — jpeg encoder quality
• restart_interval — jpeg encoder restart interval
• ctrl_hdl — controls handler
• jpeg_work — jpeg encoder workqueue (she's working, periodt 💅)
• total_frame_num — encoded frame number
• dst_done_queue — encoded frame buffer queue
• done_queue_lock — encoded frame operation spinlock 🔒
• last_done_frame_num — the last encoded frame number

🦋 SEE ALSO 🦋

• Kernel file ./drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h enum mtk_jpeg_ctx_state(9), struct mtk_jpeg_variant(9), struct mtk_jpegenc_clk(9), struct mtk_jpegdec_clk(9), struct mtk_jpegenc_comp_dev(9), struct mtk_jpegdec_comp_dev(9), struct mtk_jpeg_dev(9), struct mtk_jpeg_fmt(9), struct mtk_jpeg_q_data(9)

like, go read the whole friend group, they all ate 🔥

bestie this one's short and sweet — no scary warnings, no deprecated drama, just a struct living her best life in the MediaTek JPEG driver 🌈

and that's the page! shoutout to ./drivers/media/platform/media... for the source, version vibes from October 2026 📅, and the icon herself, struct mtk_jpeg_ctx(9) — she's booked, she's blessed, she's in the kernel 💜🧚‍♀️