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// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// from gst-gir-files (https://gitlab.freedesktop.org/gstreamer/gir-files-rs.git)
// DO NOT EDIT

use crate::GLBaseMemory;
use crate::GLContext;
use glib::object::IsA;
use glib::translate::*;
use std::mem;

glib::wrapper! {
    /// A [`GLFramebuffer`][crate::GLFramebuffer] represents and holds an OpenGL framebuffer object with
    /// it's associated attachments.
    ///
    /// A [`GLFramebuffer`][crate::GLFramebuffer] can be created with [`new()`][Self::new()] or
    /// [`with_default_depth()`][Self::with_default_depth()] and bound with
    /// [`GLFramebufferExt::bind()`][crate::prelude::GLFramebufferExt::bind()]. Other resources can be bound with
    /// [`GLFramebufferExt::attach()`][crate::prelude::GLFramebufferExt::attach()]
    ///
    /// Note: OpenGL framebuffers are not shareable resources so cannot be used
    /// between multiple OpenGL contexts.
    ///
    /// # Implements
    ///
    /// [`GLFramebufferExt`][trait@crate::prelude::GLFramebufferExt], [`trait@gst::prelude::ObjectExt`], [`trait@glib::ObjectExt`]
    #[doc(alias = "GstGLFramebuffer")]
    pub struct GLFramebuffer(Object<ffi::GstGLFramebuffer, ffi::GstGLFramebufferClass>) @extends gst::Object;

    match fn {
        type_ => || ffi::gst_gl_framebuffer_get_type(),
    }
}

impl GLFramebuffer {
    /// This function will internally create an OpenGL framebuffer object and must
    /// be called on `context`'s OpenGL thread.
    /// ## `context`
    /// a [`GLContext`][crate::GLContext]
    ///
    /// # Returns
    ///
    /// a new [`GLFramebuffer`][crate::GLFramebuffer]
    #[doc(alias = "gst_gl_framebuffer_new")]
    pub fn new<P: IsA<GLContext>>(context: &P) -> GLFramebuffer {
        skip_assert_initialized!();
        unsafe {
            from_glib_full(ffi::gst_gl_framebuffer_new(
                context.as_ref().to_glib_none().0,
            ))
        }
    }

    /// This function will internally create an OpenGL framebuffer object and must
    /// be called on `context`'s OpenGL thread.
    /// ## `context`
    /// a [`GLContext`][crate::GLContext]
    /// ## `width`
    /// width for the depth buffer
    /// ## `height`
    /// for the depth buffer
    ///
    /// # Returns
    ///
    /// a new [`GLFramebuffer`][crate::GLFramebuffer] with a depth buffer of `width` and `height`
    #[doc(alias = "gst_gl_framebuffer_new_with_default_depth")]
    #[doc(alias = "new_with_default_depth")]
    pub fn with_default_depth<P: IsA<GLContext>>(
        context: &P,
        width: u32,
        height: u32,
    ) -> GLFramebuffer {
        skip_assert_initialized!();
        unsafe {
            from_glib_none(ffi::gst_gl_framebuffer_new_with_default_depth(
                context.as_ref().to_glib_none().0,
                width,
                height,
            ))
        }
    }
}

unsafe impl Send for GLFramebuffer {}
unsafe impl Sync for GLFramebuffer {}

pub const NONE_GL_FRAMEBUFFER: Option<&GLFramebuffer> = None;

/// Trait containing all [`struct@GLFramebuffer`] methods.
///
/// # Implementors
///
/// [`GLFramebuffer`][struct@crate::GLFramebuffer]
pub trait GLFramebufferExt: 'static {
    /// attach `mem` to `attachment_point`
    ///
    /// Must be called with the same OpenGL context current that `self` was created
    /// with.
    /// ## `attachment_point`
    /// the OpenGL attachment point to bind `mem` to
    /// ## `mem`
    /// the memory object to bind to `attachment_point`
    #[doc(alias = "gst_gl_framebuffer_attach")]
    unsafe fn attach(&self, attachment_point: u32, mem: &mut GLBaseMemory);

    /// Bind `self` into the current thread
    ///
    /// Must be called with the same OpenGL context current that `self` was created
    /// with.
    #[doc(alias = "gst_gl_framebuffer_bind")]
    fn bind(&self);

    //#[doc(alias = "gst_gl_framebuffer_draw_to_texture")]
    //fn draw_to_texture(&self, mem: &mut GLMemory, func: /*Unimplemented*/FnMut(/*Unimplemented*/Option<Fundamental: Pointer>) -> bool, user_data: /*Unimplemented*/Option<Fundamental: Pointer>) -> bool;

    /// Retrieve the effective dimensions from the current attachments attached to
    /// `self`.
    ///
    /// # Returns
    ///
    ///
    /// ## `width`
    /// output width
    ///
    /// ## `height`
    /// output height
    #[doc(alias = "gst_gl_framebuffer_get_effective_dimensions")]
    #[doc(alias = "get_effective_dimensions")]
    fn effective_dimensions(&self) -> (u32, u32);

    ///
    /// # Returns
    ///
    /// the OpenGL id for `self`
    #[doc(alias = "gst_gl_framebuffer_get_id")]
    #[doc(alias = "get_id")]
    fn id(&self) -> u32;
}

impl<O: IsA<GLFramebuffer>> GLFramebufferExt for O {
    unsafe fn attach(&self, attachment_point: u32, mem: &mut GLBaseMemory) {
        ffi::gst_gl_framebuffer_attach(
            self.as_ref().to_glib_none().0,
            attachment_point,
            mem.to_glib_none_mut().0,
        );
    }

    fn bind(&self) {
        unsafe {
            ffi::gst_gl_framebuffer_bind(self.as_ref().to_glib_none().0);
        }
    }

    //fn draw_to_texture(&self, mem: &mut GLMemory, func: /*Unimplemented*/FnMut(/*Unimplemented*/Option<Fundamental: Pointer>) -> bool, user_data: /*Unimplemented*/Option<Fundamental: Pointer>) -> bool {
    //    unsafe { TODO: call ffi:gst_gl_framebuffer_draw_to_texture() }
    //}

    fn effective_dimensions(&self) -> (u32, u32) {
        unsafe {
            let mut width = mem::MaybeUninit::uninit();
            let mut height = mem::MaybeUninit::uninit();
            ffi::gst_gl_framebuffer_get_effective_dimensions(
                self.as_ref().to_glib_none().0,
                width.as_mut_ptr(),
                height.as_mut_ptr(),
            );
            let width = width.assume_init();
            let height = height.assume_init();
            (width, height)
        }
    }

    fn id(&self) -> u32 {
        unsafe { ffi::gst_gl_framebuffer_get_id(self.as_ref().to_glib_none().0) }
    }
}