edgefirst-gbm-sys 0.4.1

Bindgen generated unsafe libgbm wrapper with dynamic loading support
Documentation
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/* automatically generated by rust-bindgen 0.72.1 */

pub const GBM_FORMAT_BIG_ENDIAN: u32 = 2147483648;
pub const GBM_BO_IMPORT_WL_BUFFER: u32 = 21761;
pub const GBM_BO_IMPORT_EGL_IMAGE: u32 = 21762;
pub const GBM_BO_IMPORT_FD: u32 = 21763;
pub const GBM_BO_IMPORT_FD_MODIFIER: u32 = 21764;
pub const GBM_MAX_PLANES: u32 = 4;
#[doc = " \\file gbm.h\n \\brief Generic Buffer Manager"]
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct gbm_device {
    _unused: [u8; 0],
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct gbm_bo {
    _unused: [u8; 0],
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct gbm_surface {
    _unused: [u8; 0],
}
#[doc = " Abstraction representing the handle to a buffer allocated by the\n manager"]
#[repr(C)]
#[derive(Copy, Clone)]
pub union gbm_bo_handle {
    pub ptr: *mut libc::c_void,
    pub s32: i32,
    pub u32_: u32,
    pub s64: i64,
    pub u64_: u64,
}
pub mod gbm_bo_format {
    #[doc = " Format of the allocated buffer"]
    pub type Type = libc::c_uint;
    #[doc = " RGB with 8 bits per channel in a 32 bit value"]
    pub const GBM_BO_FORMAT_XRGB8888: Type = 0;
    #[doc = " ARGB with 8 bits per channel in a 32 bit value"]
    pub const GBM_BO_FORMAT_ARGB8888: Type = 1;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct gbm_format_name_desc {
    pub name: [libc::c_char; 5usize],
}
pub mod gbm_bo_flags {
    #[doc = " Flags to indicate the intended use for the buffer - these are passed into\n gbm_bo_create(). The caller must set the union of all the flags that are\n appropriate\n\n \\sa Use gbm_device_is_format_supported() to check if the combination of format\n and use flags are supported"]
    pub type Type = libc::c_uint;
    #[doc = " Buffer is going to be presented to the screen using an API such as KMS"]
    pub const GBM_BO_USE_SCANOUT: Type = 1;
    #[doc = " Buffer is going to be used as cursor"]
    pub const GBM_BO_USE_CURSOR: Type = 2;
    #[doc = " Deprecated"]
    pub const GBM_BO_USE_CURSOR_64X64: Type = 2;
    #[doc = " Buffer is to be used for rendering - for example it is going to be used\n as the storage for a color buffer"]
    pub const GBM_BO_USE_RENDERING: Type = 4;
    #[doc = " Buffer can be used for gbm_bo_write.  This is guaranteed to work\n with GBM_BO_USE_CURSOR, but may not work for other combinations."]
    pub const GBM_BO_USE_WRITE: Type = 8;
    #[doc = " Buffer is linear, i.e. not tiled."]
    pub const GBM_BO_USE_LINEAR: Type = 16;
    #[doc = " Buffer is protected, i.e. encrypted and not readable by CPU or any\n other non-secure / non-trusted components nor by non-trusted OpenGL,\n OpenCL, and Vulkan applications."]
    pub const GBM_BO_USE_PROTECTED: Type = 32;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct gbm_import_fd_data {
    pub fd: libc::c_int,
    pub width: u32,
    pub height: u32,
    pub stride: u32,
    pub format: u32,
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct gbm_import_fd_modifier_data {
    pub width: u32,
    pub height: u32,
    pub format: u32,
    pub num_fds: u32,
    pub fds: [libc::c_int; 4usize],
    pub strides: [libc::c_int; 4usize],
    pub offsets: [libc::c_int; 4usize],
    pub modifier: u64,
}
pub mod gbm_bo_transfer_flags {
    #[doc = " Flags to indicate the type of mapping for the buffer - these are\n passed into gbm_bo_map(). The caller must set the union of all the\n flags that are appropriate.\n\n These flags are independent of the GBM_BO_USE_* creation flags. However,\n mapping the buffer may require copying to/from a staging buffer.\n\n See also: pipe_map_flags"]
    pub type Type = libc::c_uint;
    #[doc = " Buffer contents read back (or accessed directly) at transfer\n create time."]
    pub const GBM_BO_TRANSFER_READ: Type = 1;
    #[doc = " Buffer contents will be written back at unmap time\n (or modified as a result of being accessed directly)."]
    pub const GBM_BO_TRANSFER_WRITE: Type = 2;
    #[doc = " Read/modify/write"]
    pub const GBM_BO_TRANSFER_READ_WRITE: Type = 3;
}
pub struct gbm {
    __library: ::libloading::Library,
    pub gbm_device_get_fd:
        Result<unsafe extern "C" fn(gbm: *mut gbm_device) -> libc::c_int, ::libloading::Error>,
    pub gbm_device_get_backend_name: Result<
        unsafe extern "C" fn(gbm: *mut gbm_device) -> *const libc::c_char,
        ::libloading::Error,
    >,
    pub gbm_device_is_format_supported: Result<
        unsafe extern "C" fn(gbm: *mut gbm_device, format: u32, flags: u32) -> libc::c_int,
        ::libloading::Error,
    >,
    pub gbm_device_get_format_modifier_plane_count: Result<
        unsafe extern "C" fn(gbm: *mut gbm_device, format: u32, modifier: u64) -> libc::c_int,
        ::libloading::Error,
    >,
    pub gbm_device_destroy: Result<unsafe extern "C" fn(gbm: *mut gbm_device), ::libloading::Error>,
    pub gbm_create_device:
        Result<unsafe extern "C" fn(fd: libc::c_int) -> *mut gbm_device, ::libloading::Error>,
    pub gbm_bo_create: Result<
        unsafe extern "C" fn(
            gbm: *mut gbm_device,
            width: u32,
            height: u32,
            format: u32,
            flags: u32,
        ) -> *mut gbm_bo,
        ::libloading::Error,
    >,
    pub gbm_bo_create_with_modifiers: Result<
        unsafe extern "C" fn(
            gbm: *mut gbm_device,
            width: u32,
            height: u32,
            format: u32,
            modifiers: *const u64,
            count: libc::c_uint,
        ) -> *mut gbm_bo,
        ::libloading::Error,
    >,
    pub gbm_bo_create_with_modifiers2: Result<
        unsafe extern "C" fn(
            gbm: *mut gbm_device,
            width: u32,
            height: u32,
            format: u32,
            modifiers: *const u64,
            count: libc::c_uint,
            flags: u32,
        ) -> *mut gbm_bo,
        ::libloading::Error,
    >,
    pub gbm_bo_import: Result<
        unsafe extern "C" fn(
            gbm: *mut gbm_device,
            type_: u32,
            buffer: *mut libc::c_void,
            flags: u32,
        ) -> *mut gbm_bo,
        ::libloading::Error,
    >,
    pub gbm_bo_map: Result<
        unsafe extern "C" fn(
            bo: *mut gbm_bo,
            x: u32,
            y: u32,
            width: u32,
            height: u32,
            flags: u32,
            stride: *mut u32,
            map_data: *mut *mut libc::c_void,
        ) -> *mut libc::c_void,
        ::libloading::Error,
    >,
    pub gbm_bo_unmap: Result<
        unsafe extern "C" fn(bo: *mut gbm_bo, map_data: *mut libc::c_void),
        ::libloading::Error,
    >,
    pub gbm_bo_get_width: Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> u32, ::libloading::Error>,
    pub gbm_bo_get_height:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> u32, ::libloading::Error>,
    pub gbm_bo_get_stride:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> u32, ::libloading::Error>,
    pub gbm_bo_get_stride_for_plane: Result<
        unsafe extern "C" fn(bo: *mut gbm_bo, plane: libc::c_int) -> u32,
        ::libloading::Error,
    >,
    pub gbm_bo_get_format:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> u32, ::libloading::Error>,
    pub gbm_bo_get_bpp: Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> u32, ::libloading::Error>,
    pub gbm_bo_get_offset: Result<
        unsafe extern "C" fn(bo: *mut gbm_bo, plane: libc::c_int) -> u32,
        ::libloading::Error,
    >,
    pub gbm_bo_get_device:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> *mut gbm_device, ::libloading::Error>,
    pub gbm_bo_get_handle:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> gbm_bo_handle, ::libloading::Error>,
    pub gbm_bo_get_fd:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> libc::c_int, ::libloading::Error>,
    pub gbm_bo_get_modifier:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> u64, ::libloading::Error>,
    pub gbm_bo_get_plane_count:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> libc::c_int, ::libloading::Error>,
    pub gbm_bo_get_handle_for_plane: Result<
        unsafe extern "C" fn(bo: *mut gbm_bo, plane: libc::c_int) -> gbm_bo_handle,
        ::libloading::Error,
    >,
    pub gbm_bo_get_fd_for_plane: Result<
        unsafe extern "C" fn(bo: *mut gbm_bo, plane: libc::c_int) -> libc::c_int,
        ::libloading::Error,
    >,
    pub gbm_bo_write: Result<
        unsafe extern "C" fn(
            bo: *mut gbm_bo,
            buf: *const libc::c_void,
            count: usize,
        ) -> libc::c_int,
        ::libloading::Error,
    >,
    pub gbm_bo_set_user_data: Result<
        unsafe extern "C" fn(
            bo: *mut gbm_bo,
            data: *mut libc::c_void,
            destroy_user_data: ::std::option::Option<
                unsafe extern "C" fn(arg1: *mut gbm_bo, arg2: *mut libc::c_void),
            >,
        ),
        ::libloading::Error,
    >,
    pub gbm_bo_get_user_data:
        Result<unsafe extern "C" fn(bo: *mut gbm_bo) -> *mut libc::c_void, ::libloading::Error>,
    pub gbm_bo_destroy: Result<unsafe extern "C" fn(bo: *mut gbm_bo), ::libloading::Error>,
    pub gbm_surface_create: Result<
        unsafe extern "C" fn(
            gbm: *mut gbm_device,
            width: u32,
            height: u32,
            format: u32,
            flags: u32,
        ) -> *mut gbm_surface,
        ::libloading::Error,
    >,
    pub gbm_surface_create_with_modifiers: Result<
        unsafe extern "C" fn(
            gbm: *mut gbm_device,
            width: u32,
            height: u32,
            format: u32,
            modifiers: *const u64,
            count: libc::c_uint,
        ) -> *mut gbm_surface,
        ::libloading::Error,
    >,
    pub gbm_surface_create_with_modifiers2: Result<
        unsafe extern "C" fn(
            gbm: *mut gbm_device,
            width: u32,
            height: u32,
            format: u32,
            modifiers: *const u64,
            count: libc::c_uint,
            flags: u32,
        ) -> *mut gbm_surface,
        ::libloading::Error,
    >,
    pub gbm_surface_lock_front_buffer:
        Result<unsafe extern "C" fn(surface: *mut gbm_surface) -> *mut gbm_bo, ::libloading::Error>,
    pub gbm_surface_release_buffer: Result<
        unsafe extern "C" fn(surface: *mut gbm_surface, bo: *mut gbm_bo),
        ::libloading::Error,
    >,
    pub gbm_surface_has_free_buffers:
        Result<unsafe extern "C" fn(surface: *mut gbm_surface) -> libc::c_int, ::libloading::Error>,
    pub gbm_surface_destroy:
        Result<unsafe extern "C" fn(surface: *mut gbm_surface), ::libloading::Error>,
    pub gbm_format_get_name: Result<
        unsafe extern "C" fn(gbm_format: u32, desc: *mut gbm_format_name_desc) -> *mut libc::c_char,
        ::libloading::Error,
    >,
}
impl gbm {
    pub unsafe fn new<P>(path: P) -> Result<Self, ::libloading::Error>
    where
        P: AsRef<::std::ffi::OsStr>,
    {
        let library = ::libloading::Library::new(path)?;
        Self::from_library(library)
    }

    pub unsafe fn from_library<L>(library: L) -> Result<Self, ::libloading::Error>
    where
        L: Into<::libloading::Library>,
    {
        let __library = library.into();
        let gbm_device_get_fd = __library.get(b"gbm_device_get_fd\0").map(|sym| *sym);
        let gbm_device_get_backend_name = __library
            .get(b"gbm_device_get_backend_name\0")
            .map(|sym| *sym);
        let gbm_device_is_format_supported = __library
            .get(b"gbm_device_is_format_supported\0")
            .map(|sym| *sym);
        let gbm_device_get_format_modifier_plane_count = __library
            .get(b"gbm_device_get_format_modifier_plane_count\0")
            .map(|sym| *sym);
        let gbm_device_destroy = __library.get(b"gbm_device_destroy\0").map(|sym| *sym);
        let gbm_create_device = __library.get(b"gbm_create_device\0").map(|sym| *sym);
        let gbm_bo_create = __library.get(b"gbm_bo_create\0").map(|sym| *sym);
        let gbm_bo_create_with_modifiers = __library
            .get(b"gbm_bo_create_with_modifiers\0")
            .map(|sym| *sym);
        let gbm_bo_create_with_modifiers2 = __library
            .get(b"gbm_bo_create_with_modifiers2\0")
            .map(|sym| *sym);
        let gbm_bo_import = __library.get(b"gbm_bo_import\0").map(|sym| *sym);
        let gbm_bo_map = __library.get(b"gbm_bo_map\0").map(|sym| *sym);
        let gbm_bo_unmap = __library.get(b"gbm_bo_unmap\0").map(|sym| *sym);
        let gbm_bo_get_width = __library.get(b"gbm_bo_get_width\0").map(|sym| *sym);
        let gbm_bo_get_height = __library.get(b"gbm_bo_get_height\0").map(|sym| *sym);
        let gbm_bo_get_stride = __library.get(b"gbm_bo_get_stride\0").map(|sym| *sym);
        let gbm_bo_get_stride_for_plane = __library
            .get(b"gbm_bo_get_stride_for_plane\0")
            .map(|sym| *sym);
        let gbm_bo_get_format = __library.get(b"gbm_bo_get_format\0").map(|sym| *sym);
        let gbm_bo_get_bpp = __library.get(b"gbm_bo_get_bpp\0").map(|sym| *sym);
        let gbm_bo_get_offset = __library.get(b"gbm_bo_get_offset\0").map(|sym| *sym);
        let gbm_bo_get_device = __library.get(b"gbm_bo_get_device\0").map(|sym| *sym);
        let gbm_bo_get_handle = __library.get(b"gbm_bo_get_handle\0").map(|sym| *sym);
        let gbm_bo_get_fd = __library.get(b"gbm_bo_get_fd\0").map(|sym| *sym);
        let gbm_bo_get_modifier = __library.get(b"gbm_bo_get_modifier\0").map(|sym| *sym);
        let gbm_bo_get_plane_count = __library.get(b"gbm_bo_get_plane_count\0").map(|sym| *sym);
        let gbm_bo_get_handle_for_plane = __library
            .get(b"gbm_bo_get_handle_for_plane\0")
            .map(|sym| *sym);
        let gbm_bo_get_fd_for_plane = __library.get(b"gbm_bo_get_fd_for_plane\0").map(|sym| *sym);
        let gbm_bo_write = __library.get(b"gbm_bo_write\0").map(|sym| *sym);
        let gbm_bo_set_user_data = __library.get(b"gbm_bo_set_user_data\0").map(|sym| *sym);
        let gbm_bo_get_user_data = __library.get(b"gbm_bo_get_user_data\0").map(|sym| *sym);
        let gbm_bo_destroy = __library.get(b"gbm_bo_destroy\0").map(|sym| *sym);
        let gbm_surface_create = __library.get(b"gbm_surface_create\0").map(|sym| *sym);
        let gbm_surface_create_with_modifiers = __library
            .get(b"gbm_surface_create_with_modifiers\0")
            .map(|sym| *sym);
        let gbm_surface_create_with_modifiers2 = __library
            .get(b"gbm_surface_create_with_modifiers2\0")
            .map(|sym| *sym);
        let gbm_surface_lock_front_buffer = __library
            .get(b"gbm_surface_lock_front_buffer\0")
            .map(|sym| *sym);
        let gbm_surface_release_buffer = __library
            .get(b"gbm_surface_release_buffer\0")
            .map(|sym| *sym);
        let gbm_surface_has_free_buffers = __library
            .get(b"gbm_surface_has_free_buffers\0")
            .map(|sym| *sym);
        let gbm_surface_destroy = __library.get(b"gbm_surface_destroy\0").map(|sym| *sym);
        let gbm_format_get_name = __library.get(b"gbm_format_get_name\0").map(|sym| *sym);
        Ok(gbm {
            __library,
            gbm_device_get_fd,
            gbm_device_get_backend_name,
            gbm_device_is_format_supported,
            gbm_device_get_format_modifier_plane_count,
            gbm_device_destroy,
            gbm_create_device,
            gbm_bo_create,
            gbm_bo_create_with_modifiers,
            gbm_bo_create_with_modifiers2,
            gbm_bo_import,
            gbm_bo_map,
            gbm_bo_unmap,
            gbm_bo_get_width,
            gbm_bo_get_height,
            gbm_bo_get_stride,
            gbm_bo_get_stride_for_plane,
            gbm_bo_get_format,
            gbm_bo_get_bpp,
            gbm_bo_get_offset,
            gbm_bo_get_device,
            gbm_bo_get_handle,
            gbm_bo_get_fd,
            gbm_bo_get_modifier,
            gbm_bo_get_plane_count,
            gbm_bo_get_handle_for_plane,
            gbm_bo_get_fd_for_plane,
            gbm_bo_write,
            gbm_bo_set_user_data,
            gbm_bo_get_user_data,
            gbm_bo_destroy,
            gbm_surface_create,
            gbm_surface_create_with_modifiers,
            gbm_surface_create_with_modifiers2,
            gbm_surface_lock_front_buffer,
            gbm_surface_release_buffer,
            gbm_surface_has_free_buffers,
            gbm_surface_destroy,
            gbm_format_get_name,
        })
    }

    pub unsafe fn gbm_device_get_fd(&self, gbm: *mut gbm_device) -> libc::c_int {
        (self
            .gbm_device_get_fd
            .as_ref()
            .expect("Expected function, got error."))(gbm)
    }

    pub unsafe fn gbm_device_get_backend_name(&self, gbm: *mut gbm_device) -> *const libc::c_char {
        (self
            .gbm_device_get_backend_name
            .as_ref()
            .expect("Expected function, got error."))(gbm)
    }

    pub unsafe fn gbm_device_is_format_supported(
        &self,
        gbm: *mut gbm_device,
        format: u32,
        flags: u32,
    ) -> libc::c_int {
        (self
            .gbm_device_is_format_supported
            .as_ref()
            .expect("Expected function, got error."))(gbm, format, flags)
    }

    pub unsafe fn gbm_device_get_format_modifier_plane_count(
        &self,
        gbm: *mut gbm_device,
        format: u32,
        modifier: u64,
    ) -> libc::c_int {
        (self
            .gbm_device_get_format_modifier_plane_count
            .as_ref()
            .expect("Expected function, got error."))(gbm, format, modifier)
    }

    pub unsafe fn gbm_device_destroy(&self, gbm: *mut gbm_device) {
        (self
            .gbm_device_destroy
            .as_ref()
            .expect("Expected function, got error."))(gbm)
    }

    pub unsafe fn gbm_create_device(&self, fd: libc::c_int) -> *mut gbm_device {
        (self
            .gbm_create_device
            .as_ref()
            .expect("Expected function, got error."))(fd)
    }

    pub unsafe fn gbm_bo_create(
        &self,
        gbm: *mut gbm_device,
        width: u32,
        height: u32,
        format: u32,
        flags: u32,
    ) -> *mut gbm_bo {
        (self
            .gbm_bo_create
            .as_ref()
            .expect("Expected function, got error."))(gbm, width, height, format, flags)
    }

    pub unsafe fn gbm_bo_create_with_modifiers(
        &self,
        gbm: *mut gbm_device,
        width: u32,
        height: u32,
        format: u32,
        modifiers: *const u64,
        count: libc::c_uint,
    ) -> *mut gbm_bo {
        (self
            .gbm_bo_create_with_modifiers
            .as_ref()
            .expect("Expected function, got error."))(
            gbm, width, height, format, modifiers, count
        )
    }

    pub unsafe fn gbm_bo_create_with_modifiers2(
        &self,
        gbm: *mut gbm_device,
        width: u32,
        height: u32,
        format: u32,
        modifiers: *const u64,
        count: libc::c_uint,
        flags: u32,
    ) -> *mut gbm_bo {
        (self
            .gbm_bo_create_with_modifiers2
            .as_ref()
            .expect("Expected function, got error."))(
            gbm, width, height, format, modifiers, count, flags,
        )
    }

    pub unsafe fn gbm_bo_import(
        &self,
        gbm: *mut gbm_device,
        type_: u32,
        buffer: *mut libc::c_void,
        flags: u32,
    ) -> *mut gbm_bo {
        (self
            .gbm_bo_import
            .as_ref()
            .expect("Expected function, got error."))(gbm, type_, buffer, flags)
    }

    pub unsafe fn gbm_bo_map(
        &self,
        bo: *mut gbm_bo,
        x: u32,
        y: u32,
        width: u32,
        height: u32,
        flags: u32,
        stride: *mut u32,
        map_data: *mut *mut libc::c_void,
    ) -> *mut libc::c_void {
        (self
            .gbm_bo_map
            .as_ref()
            .expect("Expected function, got error."))(
            bo, x, y, width, height, flags, stride, map_data,
        )
    }

    pub unsafe fn gbm_bo_unmap(&self, bo: *mut gbm_bo, map_data: *mut libc::c_void) {
        (self
            .gbm_bo_unmap
            .as_ref()
            .expect("Expected function, got error."))(bo, map_data)
    }

    pub unsafe fn gbm_bo_get_width(&self, bo: *mut gbm_bo) -> u32 {
        (self
            .gbm_bo_get_width
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_height(&self, bo: *mut gbm_bo) -> u32 {
        (self
            .gbm_bo_get_height
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_stride(&self, bo: *mut gbm_bo) -> u32 {
        (self
            .gbm_bo_get_stride
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_stride_for_plane(&self, bo: *mut gbm_bo, plane: libc::c_int) -> u32 {
        (self
            .gbm_bo_get_stride_for_plane
            .as_ref()
            .expect("Expected function, got error."))(bo, plane)
    }

    pub unsafe fn gbm_bo_get_format(&self, bo: *mut gbm_bo) -> u32 {
        (self
            .gbm_bo_get_format
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_bpp(&self, bo: *mut gbm_bo) -> u32 {
        (self
            .gbm_bo_get_bpp
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_offset(&self, bo: *mut gbm_bo, plane: libc::c_int) -> u32 {
        (self
            .gbm_bo_get_offset
            .as_ref()
            .expect("Expected function, got error."))(bo, plane)
    }

    pub unsafe fn gbm_bo_get_device(&self, bo: *mut gbm_bo) -> *mut gbm_device {
        (self
            .gbm_bo_get_device
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_handle(&self, bo: *mut gbm_bo) -> gbm_bo_handle {
        (self
            .gbm_bo_get_handle
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_fd(&self, bo: *mut gbm_bo) -> libc::c_int {
        (self
            .gbm_bo_get_fd
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_modifier(&self, bo: *mut gbm_bo) -> u64 {
        (self
            .gbm_bo_get_modifier
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_plane_count(&self, bo: *mut gbm_bo) -> libc::c_int {
        (self
            .gbm_bo_get_plane_count
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_get_handle_for_plane(
        &self,
        bo: *mut gbm_bo,
        plane: libc::c_int,
    ) -> gbm_bo_handle {
        (self
            .gbm_bo_get_handle_for_plane
            .as_ref()
            .expect("Expected function, got error."))(bo, plane)
    }

    pub unsafe fn gbm_bo_get_fd_for_plane(
        &self,
        bo: *mut gbm_bo,
        plane: libc::c_int,
    ) -> libc::c_int {
        (self
            .gbm_bo_get_fd_for_plane
            .as_ref()
            .expect("Expected function, got error."))(bo, plane)
    }

    pub unsafe fn gbm_bo_write(
        &self,
        bo: *mut gbm_bo,
        buf: *const libc::c_void,
        count: usize,
    ) -> libc::c_int {
        (self
            .gbm_bo_write
            .as_ref()
            .expect("Expected function, got error."))(bo, buf, count)
    }

    pub unsafe fn gbm_bo_set_user_data(
        &self,
        bo: *mut gbm_bo,
        data: *mut libc::c_void,
        destroy_user_data: ::std::option::Option<
            unsafe extern "C" fn(arg1: *mut gbm_bo, arg2: *mut libc::c_void),
        >,
    ) {
        (self
            .gbm_bo_set_user_data
            .as_ref()
            .expect("Expected function, got error."))(bo, data, destroy_user_data)
    }

    pub unsafe fn gbm_bo_get_user_data(&self, bo: *mut gbm_bo) -> *mut libc::c_void {
        (self
            .gbm_bo_get_user_data
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_bo_destroy(&self, bo: *mut gbm_bo) {
        (self
            .gbm_bo_destroy
            .as_ref()
            .expect("Expected function, got error."))(bo)
    }

    pub unsafe fn gbm_surface_create(
        &self,
        gbm: *mut gbm_device,
        width: u32,
        height: u32,
        format: u32,
        flags: u32,
    ) -> *mut gbm_surface {
        (self
            .gbm_surface_create
            .as_ref()
            .expect("Expected function, got error."))(gbm, width, height, format, flags)
    }

    pub unsafe fn gbm_surface_create_with_modifiers(
        &self,
        gbm: *mut gbm_device,
        width: u32,
        height: u32,
        format: u32,
        modifiers: *const u64,
        count: libc::c_uint,
    ) -> *mut gbm_surface {
        (self
            .gbm_surface_create_with_modifiers
            .as_ref()
            .expect("Expected function, got error."))(
            gbm, width, height, format, modifiers, count
        )
    }

    pub unsafe fn gbm_surface_create_with_modifiers2(
        &self,
        gbm: *mut gbm_device,
        width: u32,
        height: u32,
        format: u32,
        modifiers: *const u64,
        count: libc::c_uint,
        flags: u32,
    ) -> *mut gbm_surface {
        (self
            .gbm_surface_create_with_modifiers2
            .as_ref()
            .expect("Expected function, got error."))(
            gbm, width, height, format, modifiers, count, flags,
        )
    }

    pub unsafe fn gbm_surface_lock_front_buffer(&self, surface: *mut gbm_surface) -> *mut gbm_bo {
        (self
            .gbm_surface_lock_front_buffer
            .as_ref()
            .expect("Expected function, got error."))(surface)
    }

    pub unsafe fn gbm_surface_release_buffer(&self, surface: *mut gbm_surface, bo: *mut gbm_bo) {
        (self
            .gbm_surface_release_buffer
            .as_ref()
            .expect("Expected function, got error."))(surface, bo)
    }

    pub unsafe fn gbm_surface_has_free_buffers(&self, surface: *mut gbm_surface) -> libc::c_int {
        (self
            .gbm_surface_has_free_buffers
            .as_ref()
            .expect("Expected function, got error."))(surface)
    }

    pub unsafe fn gbm_surface_destroy(&self, surface: *mut gbm_surface) {
        (self
            .gbm_surface_destroy
            .as_ref()
            .expect("Expected function, got error."))(surface)
    }

    pub unsafe fn gbm_format_get_name(
        &self,
        gbm_format: u32,
        desc: *mut gbm_format_name_desc,
    ) -> *mut libc::c_char {
        (self
            .gbm_format_get_name
            .as_ref()
            .expect("Expected function, got error."))(gbm_format, desc)
    }
}