STRUCT VDEC_H264_SLICE_INFO(9)

<h1>💖 struct vdec_h264_slice_info(9) 💖</h1>

okay so bestie, welcome to the Kernel API Manual — this one's a kernel struct page, and honestly? it's giving "shared custody agreement between host and firmware" ✨ because that's literally what it is. Let's get into it 🫶

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✨ NAME ✨

struct vdec_h264_slice_info — the decode information, aka the shared data between host and firmware 👑 like, this struct is the group chat that both sides are in, and everybody's reading the same messages. no cap.

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🌸 SYNOPSIS 🌸

struct vdec_h264_slice_info {
    u16 nal_info;
    u16 timeout;
    u32 bs_buf_size;
    u64 bs_buf_addr;
    u64 y_fb_dma;
    u64 c_fb_dma;
    u64 vdec_fb_va;
    u32 crc[8];
 };

look at her 💅 eight fields, fully typed, doing the absolute most. we stan a well-organized struct.

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💅 Members 💅

• nal_info — the nal info of the current picture 🎀 like, this is the picture's whole vibe check, packed into a u16.
• timeout — the decode timeout, and it's giving boolean energy: 1 means timeout, 0 means no timeout ⏰ periodt.
• bs_buf_size — the bitstream size, i.e. how big the bitstream is 📏
• bs_buf_addr — the bitstream buffer dma address 📬 that's where the bitstream lives.
• y_fb_dma — the Y frame buffer dma address 🟡 Y as in the Y one. she has her own address.
• c_fb_dma — the C frame buffer dma address 🌈 and C gets its own address too, obviously.
• vdec_fb_va — the VDEC frame buffer struct virtual address 🧚 a virtual address, for the frame buffer struct, VDEC flavored.
• crc — used to check whether hardware's status is right ✅🔍 this is the literal vibe check for the hardware. if the hardware's acting sus, the crc knows.

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🦋 SEE ALSO 🦋

the source lives in the kernel file, bestie, go read it:

./drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c

and the whole friend group 🫶:

• enum vdec_h264_core_dec_err_type(9)
• struct vdec_h264_slice_lat_dec_param(9)
• struct vdec_h264_slice_vsi(9)
• struct vdec_h264_slice_share_info(9)
• struct vdec_h264_slice_fb(9)
• struct vdec_h264_slice_info_ext(9)
• struct vdec_h264_slice_vsi_ext(9)
• struct vdec_h264_slice_inst(9)

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and that's the page, bestie 💜 this was pulled from ./drivers/media/platform/media... and dated October 2026 — so like, mark your calendar, mwah 💋✨