STRUCT VDEC_AV1_SLICE_CDEF(9)

💅 struct vdec_av1_slice_cdef(9) — from the Kernel API Manual, bestie 🎀

okay so picture this: it's the struct vdec_av1_slice_cdef, and it's literally the AV1 CDEF parameters bundle. that's it, that's the whole vibe. it lives in the Kernel API Manual, and we're about to become obsessed with it together. ✨

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🌸 NAME 🌸

struct vdec_av1_slice_cdef — the AV1 CDEF parameters, no cap 💖

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✨ SYNOPSIS ✨

struct vdec_av1_slice_cdef {
    u8 cdef_damping;
    u8 cdef_y_strength[8];
    u8 cdef_uv_strength[8];
    u8 cdef_bits;
 };

like, that's the whole struct. four little fields. iconic behavior honestly 🦋

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👑 Members 👑

• cdef_damping — this one is in charge of how much damping the deringing filter gets. yes, the deringing filter has a damping knob. slay 🌈
• cdef_y_strength — spells out the strength of the primary filter and the secondary filter. both of them. it's giving thorough 💜
• cdef_uv_strength — same situation as above: this specifies the strength of the primary filter and the secondary filter. lather, rinse, repeat 🫶
• cdef_bits — specifies the number of bits needed to specify which CDEF filter to apply. yes, the field about bits is named cdef_bits. we love a self-aware king 👑

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🦋 SEE ALSO 🦋

first up, the Kernel file where the magic happens:

• ./drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c

and then the whole friend group — the entire squad of sibling structs, all at (9):

• struct vdec_av1_slice_init_vsi(9)
• struct vdec_av1_slice_mem(9)
• struct vdec_av1_slice_state(9)
• struct vdec_av1_slice_tile_group(9)
• struct vdec_av1_slice_scale_factors(9)
• struct vdec_av1_slice_frame_refs(9)
• struct vdec_av1_slice_gm(9)
• struct vdec_av1_slice_sm(9)
• struct vdec_av1_slice_seg(9)
• struct vdec_av1_slice_delta_q_lf(9)
• struct vdec_av1_slice_quantization(9)
• struct vdec_av1_slice_lr(9)
• struct vdec_av1_slice_loop_filter(9)
• struct vdec_av1_slice_mfmv(9)
• struct vdec_av1_slice_tile(9)
• struct vdec_av1_slice_uncompressed_header(9)
• struct vdec_av1_slice_seq_header(9)
• struct vdec_av1_slice_frame(9)
• struct vdec_av1_slice_work_buffer(9)
• struct vdec_av1_slice_frame_info(9)
• struct vdec_av1_slice_slot(9)
• struct vdec_av1_slice_fb(9)
• struct vdec_av1_slice_vsi(9)
• struct vdec_av1_slice_pfc(9)
• struct vdec_av1_slice_instance(9)

like, that's twenty-five structs. main character energy across the entire header file, fr fr 💀🌸

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the file path in the footer got cut off at ./drivers/media/platform/media... — that's just how it's printed, so don't come for me, I'm reporting it exactly as it was handed to me 🙈

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and that's the page, bestie 🎀 this little cutie came to you from the source/version line ./drivers/media/platform/media... and is dated October 2026, and the footer is still out here repping struct vdec_av1_slice_cdef(9) like the icon it is. mwah 💋💖