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use crate::v4l_sys::*;

#[cfg(not(target_env = "musl"))]
#[allow(non_camel_case_types)]
pub type _IOC_TYPE = std::os::raw::c_ulong;
#[cfg(target_env = "musl")]
#[allow(non_camel_case_types)]
pub type _IOC_TYPE = std::os::raw::c_int;

// linux ioctl.h
const _IOC_NRBITS: u8 = 8;
const _IOC_TYPEBITS: u8 = 8;

const _IOC_SIZEBITS: u8 = 14;

const _IOC_NRSHIFT: u8 = 0;
const _IOC_TYPESHIFT: u8 = _IOC_NRSHIFT + _IOC_NRBITS;
const _IOC_SIZESHIFT: u8 = _IOC_TYPESHIFT + _IOC_TYPEBITS;
const _IOC_DIRSHIFT: u8 = _IOC_SIZESHIFT + _IOC_SIZEBITS;

const _IOC_NONE: u8 = 0;
const _IOC_WRITE: u8 = 1;
const _IOC_READ: u8 = 2;

macro_rules! _IOC_TYPECHECK {
    ($type:ty) => {
        std::mem::size_of::<$type>()
    };
}

macro_rules! _IOC {
    ($dir:expr, $type:expr, $nr:expr, $size:expr) => {
        (($dir as _IOC_TYPE) << $crate::v4l2::vidioc::_IOC_DIRSHIFT)
            | (($type as _IOC_TYPE) << $crate::v4l2::vidioc::_IOC_TYPESHIFT)
            | (($nr as _IOC_TYPE) << $crate::v4l2::vidioc::_IOC_NRSHIFT)
            | (($size as _IOC_TYPE) << $crate::v4l2::vidioc::_IOC_SIZESHIFT)
    };
}

macro_rules! _IO {
    ($type:expr, $nr:expr) => {
        _IOC!($crate::v4l2::vidioc::_IOC_NONE, $type, $nr, 0)
    };
}

macro_rules! _IOR {
    ($type:expr, $nr:expr, $size:ty) => {
        _IOC!(
            $crate::v4l2::vidioc::_IOC_READ,
            $type,
            $nr,
            _IOC_TYPECHECK!($size)
        )
    };
}

macro_rules! _IOW {
    ($type:expr, $nr:expr, $size:ty) => {
        _IOC!(
            $crate::v4l2::vidioc::_IOC_WRITE,
            $type,
            $nr,
            _IOC_TYPECHECK!($size)
        )
    };
}

macro_rules! _IOWR {
    ($type:expr, $nr:expr, $size:ty) => {
        _IOC!(
            $crate::v4l2::vidioc::_IOC_READ | $crate::v4l2::vidioc::_IOC_WRITE,
            $type,
            $nr,
            _IOC_TYPECHECK!($size)
        )
    };
}

pub const VIDIOC_QUERYCAP: _IOC_TYPE = _IOR!(b'V', 0, v4l2_capability);
pub const VIDIOC_RESERVED: _IOC_TYPE = _IO!(b'V', 1);
pub const VIDIOC_ENUM_FMT: _IOC_TYPE = _IOWR!(b'V', 2, v4l2_fmtdesc);
pub const VIDIOC_G_FMT: _IOC_TYPE = _IOWR!(b'V', 4, v4l2_format);
pub const VIDIOC_S_FMT: _IOC_TYPE = _IOWR!(b'V', 5, v4l2_format);
pub const VIDIOC_REQBUFS: _IOC_TYPE = _IOWR!(b'V', 8, v4l2_requestbuffers);
pub const VIDIOC_QUERYBUF: _IOC_TYPE = _IOWR!(b'V', 9, v4l2_buffer);
pub const VIDIOC_G_FBUF: _IOC_TYPE = _IOR!(b'V', 10, v4l2_framebuffer);
pub const VIDIOC_S_FBUF: _IOC_TYPE = _IOW!(b'V', 11, v4l2_framebuffer);
pub const VIDIOC_OVERLAY: _IOC_TYPE = _IOW!(b'V', 14, std::os::raw::c_int);
pub const VIDIOC_QBUF: _IOC_TYPE = _IOWR!(b'V', 15, v4l2_buffer);
pub const VIDIOC_EXPBUF: _IOC_TYPE = _IOWR!(b'V', 16, v4l2_exportbuffer);
pub const VIDIOC_DQBUF: _IOC_TYPE = _IOWR!(b'V', 17, v4l2_buffer);
pub const VIDIOC_STREAMON: _IOC_TYPE = _IOW!(b'V', 18, std::os::raw::c_int);
pub const VIDIOC_STREAMOFF: _IOC_TYPE = _IOW!(b'V', 19, std::os::raw::c_int);
pub const VIDIOC_G_PARM: _IOC_TYPE = _IOWR!(b'V', 21, v4l2_streamparm);
pub const VIDIOC_S_PARM: _IOC_TYPE = _IOWR!(b'V', 22, v4l2_streamparm);
pub const VIDIOC_G_STD: _IOC_TYPE = _IOR!(b'V', 23, v4l2_std_id);
pub const VIDIOC_S_STD: _IOC_TYPE = _IOW!(b'V', 24, v4l2_std_id);
pub const VIDIOC_ENUMSTD: _IOC_TYPE = _IOWR!(b'V', 25, v4l2_standard);
pub const VIDIOC_ENUMINPUT: _IOC_TYPE = _IOWR!(b'V', 26, v4l2_input);
pub const VIDIOC_G_CTRL: _IOC_TYPE = _IOWR!(b'V', 27, v4l2_control);
pub const VIDIOC_S_CTRL: _IOC_TYPE = _IOWR!(b'V', 28, v4l2_control);
pub const VIDIOC_G_TUNER: _IOC_TYPE = _IOWR!(b'V', 29, v4l2_tuner);
pub const VIDIOC_S_TUNER: _IOC_TYPE = _IOW!(b'V', 30, v4l2_tuner);
pub const VIDIOC_G_AUDIO: _IOC_TYPE = _IOR!(b'V', 33, v4l2_audio);
pub const VIDIOC_S_AUDIO: _IOC_TYPE = _IOW!(b'V', 34, v4l2_audio);
pub const VIDIOC_QUERYCTRL: _IOC_TYPE = _IOWR!(b'V', 36, v4l2_queryctrl);
pub const VIDIOC_QUERYMENU: _IOC_TYPE = _IOWR!(b'V', 37, v4l2_querymenu);
pub const VIDIOC_G_INPUT: _IOC_TYPE = _IOR!(b'V', 38, std::os::raw::c_int);
pub const VIDIOC_S_INPUT: _IOC_TYPE = _IOWR!(b'V', 39, std::os::raw::c_int);
pub const VIDIOC_G_EDID: _IOC_TYPE = _IOWR!(b'V', 40, v4l2_edid);
pub const VIDIOC_S_EDID: _IOC_TYPE = _IOWR!(b'V', 41, v4l2_edid);
pub const VIDIOC_G_OUTPUT: _IOC_TYPE = _IOR!(b'V', 46, std::os::raw::c_int);
pub const VIDIOC_S_OUTPUT: _IOC_TYPE = _IOWR!(b'V', 47, std::os::raw::c_int);
pub const VIDIOC_ENUMOUTPUT: _IOC_TYPE = _IOWR!(b'V', 48, v4l2_output);
pub const VIDIOC_G_AUDOUT: _IOC_TYPE = _IOR!(b'V', 49, v4l2_audioout);
pub const VIDIOC_S_AUDOUT: _IOC_TYPE = _IOW!(b'V', 50, v4l2_audioout);
pub const VIDIOC_G_MODULATOR: _IOC_TYPE = _IOWR!(b'V', 54, v4l2_modulator);
pub const VIDIOC_S_MODULATOR: _IOC_TYPE = _IOW!(b'V', 55, v4l2_modulator);
pub const VIDIOC_G_FREQUENCY: _IOC_TYPE = _IOWR!(b'V', 56, v4l2_frequency);
pub const VIDIOC_S_FREQUENCY: _IOC_TYPE = _IOW!(b'V', 57, v4l2_frequency);
pub const VIDIOC_CROPCAP: _IOC_TYPE = _IOWR!(b'V', 58, v4l2_cropcap);
pub const VIDIOC_G_CROP: _IOC_TYPE = _IOWR!(b'V', 59, v4l2_crop);
pub const VIDIOC_S_CROP: _IOC_TYPE = _IOW!(b'V', 60, v4l2_crop);
pub const VIDIOC_G_JPEGCOMP: _IOC_TYPE = _IOR!(b'V', 61, v4l2_jpegcompression);
pub const VIDIOC_S_JPEGCOMP: _IOC_TYPE = _IOW!(b'V', 62, v4l2_jpegcompression);
pub const VIDIOC_QUERYSTD: _IOC_TYPE = _IOR!(b'V', 63, v4l2_std_id);
pub const VIDIOC_TRY_FMT: _IOC_TYPE = _IOWR!(b'V', 64, v4l2_format);
pub const VIDIOC_ENUMAUDIO: _IOC_TYPE = _IOWR!(b'V', 65, v4l2_audio);
pub const VIDIOC_ENUMAUDOUT: _IOC_TYPE = _IOWR!(b'V', 66, v4l2_audioout);
pub const VIDIOC_G_PRIORITY: _IOC_TYPE = _IOR!(b'V', 67, std::os::raw::c_int);
pub const VIDIOC_S_PRIORITY: _IOC_TYPE = _IOW!(b'V', 68, std::os::raw::c_int);
pub const VIDIOC_G_SLICED_VBI_CAP: _IOC_TYPE = _IOWR!(b'V', 69, v4l2_sliced_vbi_cap);
pub const VIDIOC_LOG_STATUS: _IOC_TYPE = _IO!(b'V', 70);
pub const VIDIOC_G_EXT_CTRLS: _IOC_TYPE = _IOWR!(b'V', 71, v4l2_ext_controls);
pub const VIDIOC_S_EXT_CTRLS: _IOC_TYPE = _IOWR!(b'V', 72, v4l2_ext_controls);
pub const VIDIOC_TRY_EXT_CTRLS: _IOC_TYPE = _IOWR!(b'V', 73, v4l2_ext_controls);
pub const VIDIOC_ENUM_FRAMESIZES: _IOC_TYPE = _IOWR!(b'V', 74, v4l2_frmsizeenum);
pub const VIDIOC_ENUM_FRAMEINTERVALS: _IOC_TYPE = _IOWR!(b'V', 75, v4l2_frmivalenum);
pub const VIDIOC_G_ENC_INDEX: _IOC_TYPE = _IOR!(b'V', 76, v4l2_enc_idx);
pub const VIDIOC_ENCODER_CMD: _IOC_TYPE = _IOWR!(b'V', 77, v4l2_encoder_cmd);
pub const VIDIOC_TRY_ENCODER_CMD: _IOC_TYPE = _IOWR!(b'V', 78, v4l2_encoder_cmd);
pub const VIDIOC_QUERY_EXT_CTRL: _IOC_TYPE = _IOWR!(b'V', 103, v4l2_query_ext_ctrl);