// 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::GLDisplay;
use crate::GLPlatform;
use crate::GLSLProfile;
use crate::GLSLVersion;
use crate::GLWindow;
use crate::GLAPI;
use glib::object::IsA;
use glib::translate::*;
use std::mem;
use std::ptr;

glib::wrapper! {
    /// [`crate::GLContext`] wraps an OpenGL context object in a uniform API. As a result
    /// of the limitation on OpenGL context, this object is not thread safe unless
    /// specified and must only be activated in a single thread.
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// # Implements
    ///
    /// [`trait@crate::prelude::GLContextExt`], [`trait@gst::prelude::ObjectExt`], [`trait@glib::object::ObjectExt`], [`trait@crate::prelude::GLContextExtManual`]
    pub struct GLContext(Object<ffi::GstGLContext, ffi::GstGLContextClass>) @extends gst::Object;

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

impl GLContext {
    /// Create a new [`crate::GLContext`] with the specified `display`
    /// ## `display`
    /// a [`crate::GLDisplay`]
    ///
    /// # Returns
    ///
    /// a new [`crate::GLContext`]
    #[doc(alias = "gst_gl_context_new")]
    pub fn new<P: IsA<GLDisplay>>(display: &P) -> GLContext {
        skip_assert_initialized!();
        unsafe { from_glib_none(ffi::gst_gl_context_new(display.as_ref().to_glib_none().0)) }
    }

    /// See also [`crate::prelude::GLContextExt::activate()`].
    ///
    /// # Returns
    ///
    /// the [`crate::GLContext`] active in the current thread or [`None`]
    #[doc(alias = "gst_gl_context_get_current")]
    #[doc(alias = "get_current")]
    pub fn current() -> Option<GLContext> {
        assert_initialized_main_thread!();
        unsafe { from_glib_none(ffi::gst_gl_context_get_current()) }
    }

    /// If an error occurs, `major` and `minor` are not modified and [`crate::GLAPI::None`] is
    /// returned.
    /// ## `platform`
    /// the [`crate::GLPlatform`] to retrieve the API for
    /// ## `major`
    /// the major version
    /// ## `minor`
    /// the minor version
    ///
    /// # Returns
    ///
    /// The version supported by the OpenGL context current in the calling
    ///  thread or [`crate::GLAPI::None`]
    #[doc(alias = "gst_gl_context_get_current_gl_api")]
    #[doc(alias = "get_current_gl_api")]
    pub fn current_gl_api(platform: GLPlatform) -> (GLAPI, u32, u32) {
        assert_initialized_main_thread!();
        unsafe {
            let mut major = mem::MaybeUninit::uninit();
            let mut minor = mem::MaybeUninit::uninit();
            let ret = from_glib(ffi::gst_gl_context_get_current_gl_api(
                platform.into_glib(),
                major.as_mut_ptr(),
                minor.as_mut_ptr(),
            ));
            let major = major.assume_init();
            let minor = minor.assume_init();
            (ret, major, minor)
        }
    }
}

unsafe impl Send for GLContext {}
unsafe impl Sync for GLContext {}

pub const NONE_GL_CONTEXT: Option<&GLContext> = None;

/// Trait containing all `GLContext` methods.
///
/// # Implementors
///
/// [`struct@crate::GLContext`]
pub trait GLContextExt: 'static {
    /// (De)activate the OpenGL context represented by this `self`.
    ///
    /// In OpenGL terms, calls eglMakeCurrent or similar with this context and the
    /// currently set window. See [`Self::set_window()`] for details.
    /// ## `activate`
    /// [`true`] to activate, [`false`] to deactivate
    ///
    /// # Returns
    ///
    /// Whether the activation succeeded
    #[doc(alias = "gst_gl_context_activate")]
    fn activate(&self, activate: bool) -> Result<(), glib::error::BoolError>;

    /// Note: This will always fail for two wrapped [`crate::GLContext`]'s
    /// ## `other_context`
    /// another [`crate::GLContext`]
    ///
    /// # Returns
    ///
    /// whether `self` and `other_context` are able to share OpenGL
    ///  resources.
    #[doc(alias = "gst_gl_context_can_share")]
    fn can_share<P: IsA<GLContext>>(&self, other_context: &P) -> bool;

    /// Check for an OpenGL `feature` being supported.
    ///
    /// Note: Most features require that the context be created before it is
    /// possible to determine their existence and so will fail if that is not the
    /// case.
    /// ## `feature`
    /// a platform specific feature
    ///
    /// # Returns
    ///
    /// Whether `feature` is supported by `self`
    #[doc(alias = "gst_gl_context_check_feature")]
    fn check_feature(&self, feature: &str) -> bool;

    /// ## `fbo_target`
    /// the GL value of the framebuffer target, GL_FRAMEBUFFER,
    ///  GL_READ_FRAMEBUFFER, GL_DRAW_FRAMEBUFFER
    ///
    /// # Returns
    ///
    /// whether whether the current framebuffer is complete
    #[doc(alias = "gst_gl_context_check_framebuffer_status")]
    fn check_framebuffer_status(&self, fbo_target: u32) -> bool;

    /// ## `api`
    /// api type required
    /// ## `maj`
    /// major version required
    /// ## `min`
    /// minor version required
    ///
    /// # Returns
    ///
    /// whether OpenGL context implements the required api and specified
    /// version.
    #[doc(alias = "gst_gl_context_check_gl_version")]
    fn check_gl_version(&self, api: GLAPI, maj: i32, min: i32) -> bool;

    /// Unbind the current framebuffer
    #[doc(alias = "gst_gl_context_clear_framebuffer")]
    fn clear_framebuffer(&self);

    /// Clear's the currently set shader from the GL state machine.
    ///
    /// Note: must be called in the GL thread.
    #[doc(alias = "gst_gl_context_clear_shader")]
    fn clear_shader(&self);

    /// Creates an OpenGL context with the specified `other_context` as a context
    /// to share shareable OpenGL objects with. See the OpenGL specification for
    /// what is shared between OpenGL contexts.
    ///
    /// If an error occurs, and `error` is not [`None`], then error will contain details
    /// of the error and [`false`] will be returned.
    ///
    /// Should only be called once.
    /// ## `other_context`
    /// a [`crate::GLContext`] to share OpenGL objects with
    ///
    /// # Returns
    ///
    /// whether the context could successfully be created
    #[doc(alias = "gst_gl_context_create")]
    fn create<P: IsA<GLContext>>(&self, other_context: Option<&P>) -> Result<(), glib::Error>;

    /// Destroys an OpenGL context.
    ///
    /// Should only be called after [`Self::create()`] has been successfully
    /// called for this context.
    #[doc(alias = "gst_gl_context_destroy")]
    fn destroy(&self);

    /// Fills `self`'s info (version, extensions, vtable, etc) from the GL
    /// context in the current thread. Typically used with wrapped contexts to
    /// allow wrapped contexts to be used as regular [`crate::GLContext`]'s.
    #[doc(alias = "gst_gl_context_fill_info")]
    fn fill_info(&self) -> Result<(), glib::Error>;

    ///
    /// # Returns
    ///
    /// the [`crate::GLDisplay`] associated with this `self`
    #[doc(alias = "gst_gl_context_get_display")]
    #[doc(alias = "get_display")]
    fn display(&self) -> GLDisplay;

    /// Get the currently enabled OpenGL api.
    ///
    /// The currently available API may be limited by the [`crate::GLDisplay`] in use and/or
    /// the [`crate::GLWindow`] chosen.
    ///
    /// # Returns
    ///
    /// the available OpenGL api
    #[doc(alias = "gst_gl_context_get_gl_api")]
    #[doc(alias = "get_gl_api")]
    fn gl_api(&self) -> GLAPI;

    /// Gets the OpenGL platform that used by `self`.
    ///
    /// # Returns
    ///
    /// The platform specific backing OpenGL context
    #[doc(alias = "gst_gl_context_get_gl_platform")]
    #[doc(alias = "get_gl_platform")]
    fn gl_platform(&self) -> GLPlatform;

    /// Get the version of the OpenGL platform (GLX, EGL, etc) used. Only valid
    /// after a call to [`Self::create()`].
    /// ## `major`
    /// return for the major version
    /// ## `minor`
    /// return for the minor version
    #[doc(alias = "gst_gl_context_get_gl_platform_version")]
    #[doc(alias = "get_gl_platform_version")]
    fn gl_platform_version(&self) -> (i32, i32);

    /// Returns the OpenGL version implemented by `self`. See
    /// [`Self::get_gl_api()`] for retrieving the OpenGL api implemented by
    /// `self`.
    /// ## `maj`
    /// resulting major version
    /// ## `min`
    /// resulting minor version
    #[doc(alias = "gst_gl_context_get_gl_version")]
    #[doc(alias = "get_gl_version")]
    fn gl_version(&self) -> (i32, i32);

    ///
    /// # Returns
    ///
    /// the currently set window
    #[doc(alias = "gst_gl_context_get_window")]
    #[doc(alias = "get_window")]
    fn window(&self) -> Option<GLWindow>;

    ///
    /// # Returns
    ///
    /// Whether the [`crate::GLContext`] has been shared with another [`crate::GLContext`]
    #[doc(alias = "gst_gl_context_is_shared")]
    fn is_shared(&self) -> bool;

    /// Will internally set `self` as shared with `share`
    /// ## `share`
    /// another [`crate::GLContext`]
    #[doc(alias = "gst_gl_context_set_shared_with")]
    fn set_shared_with<P: IsA<GLContext>>(&self, share: &P);

    /// Set's the current window on `self` to `window`. The window can only be
    /// changed before [`Self::create()`] has been called and the `window` is not
    /// already running.
    /// ## `window`
    /// a [`crate::GLWindow`]
    ///
    /// # Returns
    ///
    /// Whether the window was successfully updated
    #[doc(alias = "gst_gl_context_set_window")]
    fn set_window<P: IsA<GLWindow>>(&self, window: &P) -> Result<(), glib::error::BoolError>;

    /// ## `version`
    /// a [`crate::GLSLVersion`]
    /// ## `profile`
    /// a [`crate::GLSLProfile`]
    ///
    /// # Returns
    ///
    /// Whether `self` supports the combination of `version` with `profile`
    #[doc(alias = "gst_gl_context_supports_glsl_profile_version")]
    fn supports_glsl_profile_version(&self, version: GLSLVersion, profile: GLSLProfile) -> bool;

    /// ## `version`
    /// a [`crate::GLSLVersion`]
    /// ## `profile`
    /// a [`crate::GLSLProfile`]
    ///
    /// # Returns
    ///
    /// whether `self` supports the 'precision' specifier in GLSL shaders
    #[cfg(any(feature = "v1_16", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
    #[doc(alias = "gst_gl_context_supports_precision")]
    fn supports_precision(&self, version: GLSLVersion, profile: GLSLProfile) -> bool;

    /// ## `version`
    /// a [`crate::GLSLVersion`]
    /// ## `profile`
    /// a [`crate::GLSLProfile`]
    ///
    /// # Returns
    ///
    /// whether `self` supports the 'precision highp' specifier in GLSL shaders
    #[cfg(any(feature = "v1_16", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
    #[doc(alias = "gst_gl_context_supports_precision_highp")]
    fn supports_precision_highp(&self, version: GLSLVersion, profile: GLSLProfile) -> bool;

    /// Swap the front and back buffers on the window attached to `self`.
    /// This will display the frame on the next refresh cycle.
    #[doc(alias = "gst_gl_context_swap_buffers")]
    fn swap_buffers(&self);
}

impl<O: IsA<GLContext>> GLContextExt for O {
    fn activate(&self, activate: bool) -> Result<(), glib::error::BoolError> {
        unsafe {
            glib::result_from_gboolean!(
                ffi::gst_gl_context_activate(self.as_ref().to_glib_none().0, activate.into_glib()),
                "Failed to activate OpenGL context"
            )
        }
    }

    fn can_share<P: IsA<GLContext>>(&self, other_context: &P) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_can_share(
                self.as_ref().to_glib_none().0,
                other_context.as_ref().to_glib_none().0,
            ))
        }
    }

    fn check_feature(&self, feature: &str) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_check_feature(
                self.as_ref().to_glib_none().0,
                feature.to_glib_none().0,
            ))
        }
    }

    fn check_framebuffer_status(&self, fbo_target: u32) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_check_framebuffer_status(
                self.as_ref().to_glib_none().0,
                fbo_target,
            ))
        }
    }

    fn check_gl_version(&self, api: GLAPI, maj: i32, min: i32) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_check_gl_version(
                self.as_ref().to_glib_none().0,
                api.into_glib(),
                maj,
                min,
            ))
        }
    }

    fn clear_framebuffer(&self) {
        unsafe {
            ffi::gst_gl_context_clear_framebuffer(self.as_ref().to_glib_none().0);
        }
    }

    fn clear_shader(&self) {
        unsafe {
            ffi::gst_gl_context_clear_shader(self.as_ref().to_glib_none().0);
        }
    }

    fn create<P: IsA<GLContext>>(&self, other_context: Option<&P>) -> Result<(), glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let _ = ffi::gst_gl_context_create(
                self.as_ref().to_glib_none().0,
                other_context.map(|p| p.as_ref()).to_glib_none().0,
                &mut error,
            );
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    fn destroy(&self) {
        unsafe {
            ffi::gst_gl_context_destroy(self.as_ref().to_glib_none().0);
        }
    }

    fn fill_info(&self) -> Result<(), glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let _ = ffi::gst_gl_context_fill_info(self.as_ref().to_glib_none().0, &mut error);
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    fn display(&self) -> GLDisplay {
        unsafe {
            from_glib_full(ffi::gst_gl_context_get_display(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn gl_api(&self) -> GLAPI {
        unsafe {
            from_glib(ffi::gst_gl_context_get_gl_api(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn gl_platform(&self) -> GLPlatform {
        unsafe {
            from_glib(ffi::gst_gl_context_get_gl_platform(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn gl_platform_version(&self) -> (i32, i32) {
        unsafe {
            let mut major = mem::MaybeUninit::uninit();
            let mut minor = mem::MaybeUninit::uninit();
            ffi::gst_gl_context_get_gl_platform_version(
                self.as_ref().to_glib_none().0,
                major.as_mut_ptr(),
                minor.as_mut_ptr(),
            );
            let major = major.assume_init();
            let minor = minor.assume_init();
            (major, minor)
        }
    }

    fn gl_version(&self) -> (i32, i32) {
        unsafe {
            let mut maj = mem::MaybeUninit::uninit();
            let mut min = mem::MaybeUninit::uninit();
            ffi::gst_gl_context_get_gl_version(
                self.as_ref().to_glib_none().0,
                maj.as_mut_ptr(),
                min.as_mut_ptr(),
            );
            let maj = maj.assume_init();
            let min = min.assume_init();
            (maj, min)
        }
    }

    fn window(&self) -> Option<GLWindow> {
        unsafe {
            from_glib_full(ffi::gst_gl_context_get_window(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn is_shared(&self) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_is_shared(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn set_shared_with<P: IsA<GLContext>>(&self, share: &P) {
        unsafe {
            ffi::gst_gl_context_set_shared_with(
                self.as_ref().to_glib_none().0,
                share.as_ref().to_glib_none().0,
            );
        }
    }

    fn set_window<P: IsA<GLWindow>>(&self, window: &P) -> Result<(), glib::error::BoolError> {
        unsafe {
            glib::result_from_gboolean!(
                ffi::gst_gl_context_set_window(
                    self.as_ref().to_glib_none().0,
                    window.as_ref().to_glib_full()
                ),
                "Failed to set window"
            )
        }
    }

    fn supports_glsl_profile_version(&self, version: GLSLVersion, profile: GLSLProfile) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_supports_glsl_profile_version(
                self.as_ref().to_glib_none().0,
                version.into_glib(),
                profile.into_glib(),
            ))
        }
    }

    #[cfg(any(feature = "v1_16", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
    fn supports_precision(&self, version: GLSLVersion, profile: GLSLProfile) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_supports_precision(
                self.as_ref().to_glib_none().0,
                version.into_glib(),
                profile.into_glib(),
            ))
        }
    }

    #[cfg(any(feature = "v1_16", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
    fn supports_precision_highp(&self, version: GLSLVersion, profile: GLSLProfile) -> bool {
        unsafe {
            from_glib(ffi::gst_gl_context_supports_precision_highp(
                self.as_ref().to_glib_none().0,
                version.into_glib(),
                profile.into_glib(),
            ))
        }
    }

    fn swap_buffers(&self) {
        unsafe {
            ffi::gst_gl_context_swap_buffers(self.as_ref().to_glib_none().0);
        }
    }
}