STRUCT HANTRO_AV1_DEC_HW_CTX(9)

💅 struct hantro_av1_dec_hw_ctx(9) — the Kernel API Manual, bestie edition ✨

okay so picture this: you're deep in the Kernel API Manual and you land on struct hantro_av1_dec_hw_ctx — yes that's the full name, yes it's a mouthful, no we're not shortening it, it's iconic. This is the AV1 decoder hardware context struct for the Hantro/Verisilicon fam, and it is packed with little buffers. Let's go 🫶

✨ SYNOPSIS ✨

lowkey the whole vibe is right here, bestie — every single field, no cap:

struct hantro_av1_dec_hw_ctx {
    struct hantro_aux_buf db_data_col;
    struct hantro_aux_buf db_ctrl_col;
    struct hantro_aux_buf cdef_col;
    struct hantro_aux_buf sr_col;
    struct hantro_aux_buf lr_col;
    struct hantro_aux_buf global_model;
    struct hantro_aux_buf tile_info;
    struct hantro_aux_buf segment;
    struct hantro_aux_buf film_grain;
    struct hantro_aux_buf prob_tbl;
    struct hantro_aux_buf prob_tbl_out;
    struct hantro_aux_buf tile_buf;
    struct hantro_av1_dec_ctrls ctrls;
    struct hantro_av1_frame_ref frame_refs[AV1_MAX_FRAME_BUF_COUNT];
    u32 ref_frame_sign_bias[V4L2_AV1_TOTAL_REFS_PER_FRAME];
    unsigned int num_tile_cols_allocated;
    struct av1cdfs *cdfs;
    struct mvcdfs  *cdfs_ndvc;
    struct av1cdfs default_cdfs;
    struct mvcdfs  default_cdfs_ndvc;
    struct av1cdfs cdfs_last[NUM_REF_FRAMES];
    struct mvcdfs  cdfs_last_ndvc[NUM_REF_FRAMES];
    int current_frame_index;
 };

🎀 MEMBERS 🎀

okay bestie, here's the cast of characters, one by one, and every single one of them is serving a purpose 💖

• db_data_col — db tile col data buffer 🦋
• db_ctrl_col — db tile col ctrl buffer
• cdef_col — cdef tile col buffer
• sr_col — sr tile col buffer
• lr_col — lr tile col buffer
• global_model — the global model buffer, she's got range ✨
• tile_info — tile info buffer
• segment — segmentation info buffer
• film_grain — film grain buffer, aesthetic on purpose 🎀
• prob_tbl — probability table
• prob_tbl_out — probability table output
• tile_buf — tile buffer
• ctrls — V4L2 controls attached to a run 👑
• frame_refs — reference frames info slots
• ref_frame_sign_bias — array of sign bias
• num_tile_cols_allocated — number of allocated tiles
• cdfs — current probabilities structure
• cdfs_ndvc — current mv probabilities structure
• default_cdfs — default probabilities structure
• default_cdfs_ndvc — default mv probabilties structure (yes, that's the original spelling, we do NOT correct the source, periodt)
• cdfs_last — stored probabilities structures
• cdfs_last_ndvc — stored mv probabilities structures
• current_frame_index — index of the current in frame_refs array

🌈 SEE ALSO 🌈

this is the friend group, fr fr — Kernel file ./drivers/media/platform/verisilicon/hantro_hw.h plus all these icons:

• 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_postproc_ctx(9)
• struct hantro_postproc_ops(9)
• struct hantro_codec_ops(9)
• enum hantro_enc_fmt(9)

ngl bestie, if you got this far you're basically a kernel dev now. go touch some hantro_aux_buf 💀

and that's the tea ☕ — this page came from ./drivers/media/platform/veris..., dated October 2026, and it's literally the struct hantr...1_dec_hw_ctx(9) glow-up. mwah 💋✨