struct vb2fw_format {
    u32 fourcc;           /* V4L2 FourCC 代码 */
    u32 depth;            /* 每像素位数 */
    const char *name;     /* 格式名称 */
};

static const struct vb2fw_format vb2fw_formats[] = {
    {
        .fourcc = V4L2_PIX_FMT_YUYV,
        .depth  = 16,
        .name   = "YUYV 4:2:2",
    },
    {
        .fourcc = V4L2_PIX_FMT_UYVY,
        .depth  = 16,
        .name   = "UYVY 4:2:2",
    },
    {
        .fourcc = V4L2_PIX_FMT_RGB24,
        .depth  = 24,
        .name   = "RGB24",
    },
    {
        .fourcc = V4L2_PIX_FMT_BGR24,
        .depth  = 24,
        .name   = "BGR24",
    },
    {
        .fourcc = V4L2_PIX_FMT_YUV420,
        .depth  = 12,
        .name   = "YUV 4:2:0",
    },
    {
        .fourcc = V4L2_PIX_FMT_NV12,
        .depth  = 12,
        .name   = "NV12",
    },
};