ENUM HANTRO_ENC_FMT(9)

🌸 enum hantro_enc_fmt(9) — the Kernel API Manual, bestie edition 🌸

okay so this is a page from the Kernel API Manual and we're talking about enum hantro_enc_fmt. Yes it's a manual page, no it's not boring, stay with me 💅

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✨ NAME ✨

enum hantro_enc_fmt — literally just the source format ID for hardware registers. that's the whole vibe. it tells the hardware "hey bestie, this is what the pixels look like" 🎀

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🦋 SYNOPSIS 🦋

enum hantro_enc_fmt {
    ROCKCHIP_VPU_ENC_FMT_YUV420P ,
    ROCKCHIP_VPU_ENC_FMT_YUV420SP ,
    ROCKCHIP_VPU_ENC_FMT_YUYV422 ,
    ROCKCHIP_VPU_ENC_FMT_UYVY422

};

like, that's it. four constants, all named in full uppercase because the kernel is dramatic like that 👑

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💖 Constants 💖

okay so here's the cast of characters, and yes I love all of them equally:

• ROCKCHIP_VPU_ENC_FMT_YUV420P — the Y/CbCr 4:2:0 planar format. planar! meaning the planes are all separate. very organized, very main character energy ✨
• ROCKCHIP_VPU_ENC_FMT_YUV420SP — the Y/CbCr 4:2:0 semi-planar format. semi-planar, because sometimes you want your planes to hang out together 🫶
• ROCKCHIP_VPU_ENC_FMT_YUYV422 — the YUV 4:2:2 packed format (YUYV). packed! everything interleaved! chaotic but in a cute way 🦋
• ROCKCHIP_VPU_ENC_FMT_UYVY422 — the YUV 4:2:2 packed format (UYVY). same packed vibe as the one above but the bytes are in a different order, and honestly? iconic for that 💅

ngl, the ordering difference between YUYV and UYVY is exactly the kind of thing that will ruin your entire afternoon if you mix them up, so keep your eyes on it fr fr 👀

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🌈 SEE ALSO 🌈

the kernel file we're living in is ./drivers/media/platform/verisilicon/hantro_hw.h, and bestie, the friend group is huge. go say hi to:

• struct hantro_aux_buf(9)
• struct hantro_h264_dec_ctrls(9)
• struct hantro_h264_dec_reflists(9)
• struct hantro_h264_dec_hw_ctx(9)
• struct hantro_hevc_dec_ctrls(9)
• struct hantro_hevc_dec_hw_ctx(9)
• struct hantro_mpeg2_dec_hw_ctx(9)
• struct hantro_vp8_dec_hw_ctx(9)
• struct hantro_vp9_frame_info(9)
• struct hantro_vp9_dec_hw_ctx(9)
• struct hantro_av1_dec_ctrls(9)
• struct hantro_av1_dec_hw_ctx(9)
• struct hantro_postproc_ctx(9)
• struct hantro_postproc_ops(9)
• struct hantro_codec_ops(9)

like, that's a whole group chat worth of structs. every codec showed up to the party 😭🔥

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and that's the page!! mwah 💋 this came out of ./drivers/media/platform/veris... — the version compiled October 2026 — and it's still titled enum hantro_enc_fmt(9). slay, go forth and encode 🧚💜