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gstreamer/miniobject: Make get_type function optional

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Static typing is needed for `Value` interop, but not every type
(GLMemory in this instance) requires that.
This commit is contained in:
Marijn Suijten 2021-01-06 10:57:51 +01:00 committed by Sebastian Dröge
parent 01f0988a48
commit 9cc488db4c
1 changed files with 52 additions and 49 deletions
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101
gstreamer/src/miniobject.rs
View file

@ -1,8 +1,8 @@
// Take a look at the license at the top of the repository in the LICENSE file.
#[macro_export]
macro_rules! mini_object_wrapper(
($name:ident, $ref_name:ident, $ffi_name:path, $get_type:expr) => {
macro_rules! mini_object_wrapper (
($name:ident, $ref_name:ident, $ffi_name:path) => {
pub struct $name {
obj: std::ptr::NonNull<$ffi_name>,
}
@ -117,12 +117,6 @@ macro_rules! mini_object_wrapper(
}
}
impl $crate::glib::types::StaticType for $name {
fn static_type() -> $crate::glib::types::Type {
$ref_name::static_type()
}
}
impl<'a> $crate::glib::translate::ToGlibPtr<'a, *const $ffi_name> for $name {
type Storage = &'a Self;
@ -362,31 +356,6 @@ macro_rules! mini_object_wrapper(
}
}
impl<'a> $crate::glib::value::FromValueOptional<'a>
for $name
{
unsafe fn from_value_optional(v: &'a glib::Value) -> Option<Self> {
let ptr = $crate::glib::gobject_ffi::g_value_get_boxed($crate::glib::translate::ToGlibPtr::to_glib_none(v).0);
$crate::glib::translate::from_glib_none(ptr as *const $ffi_name)
}
}
impl $crate::glib::value::SetValue for $name {
unsafe fn set_value(v: &mut glib::Value, s: &Self) {
$crate::glib::gobject_ffi::g_value_set_boxed($crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(v).0, s.as_ptr() as $crate::glib::ffi::gpointer);
}
}
impl $crate::glib::value::SetValueOptional for $name {
unsafe fn set_value_optional(v: &mut glib::Value, s: Option<&Self>) {
if let Some(s) = s {
$crate::glib::gobject_ffi::g_value_set_boxed($crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(v).0, s.as_ptr() as $crate::glib::ffi::gpointer);
} else {
$crate::glib::gobject_ffi::g_value_set_boxed($crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(v).0, std::ptr::null_mut());
}
}
}
impl $crate::glib::translate::GlibPtrDefault for $name {
type GlibType = *mut $ffi_name;
}
@ -423,14 +392,61 @@ macro_rules! mini_object_wrapper(
}
}
impl $crate::glib::translate::GlibPtrDefault for $ref_name {
type GlibType = *mut $ffi_name;
}
impl ToOwned for $ref_name {
type Owned = $name;
fn to_owned(&self) -> $name {
self.copy()
}
}
unsafe impl Sync for $ref_name {}
unsafe impl Send for $ref_name {}
unsafe impl Sync for $name {}
unsafe impl Send for $name {}
};
($name:ident, $ref_name:ident, $ffi_name:path, $get_type:expr) => {
$crate::mini_object_wrapper!($name, $ref_name, $ffi_name);
impl $crate::glib::types::StaticType for $name {
fn static_type() -> $crate::glib::types::Type {
$ref_name::static_type()
}
}
impl $crate::glib::types::StaticType for $ref_name {
fn static_type() -> $crate::glib::types::Type {
unsafe { $crate::glib::translate::from_glib($get_type()) }
}
}
impl $crate::glib::translate::GlibPtrDefault for $ref_name {
type GlibType = *mut $ffi_name;
impl<'a> $crate::glib::value::FromValueOptional<'a>
for $name
{
unsafe fn from_value_optional(v: &'a glib::Value) -> Option<Self> {
let ptr = $crate::glib::gobject_ffi::g_value_get_boxed($crate::glib::translate::ToGlibPtr::to_glib_none(v).0);
$crate::glib::translate::from_glib_none(ptr as *const $ffi_name)
}
}
impl $crate::glib::value::SetValue for $name {
unsafe fn set_value(v: &mut glib::Value, s: &Self) {
$crate::glib::gobject_ffi::g_value_set_boxed($crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(v).0, s.as_ptr() as $crate::glib::ffi::gpointer);
}
}
impl $crate::glib::value::SetValueOptional for $name {
unsafe fn set_value_optional(v: &mut glib::Value, s: Option<&Self>) {
if let Some(s) = s {
$crate::glib::gobject_ffi::g_value_set_boxed($crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(v).0, s.as_ptr() as $crate::glib::ffi::gpointer);
} else {
$crate::glib::gobject_ffi::g_value_set_boxed($crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(v).0, std::ptr::null_mut());
}
}
}
impl<'a> $crate::glib::value::FromValueOptional<'a>
@ -448,18 +464,5 @@ macro_rules! mini_object_wrapper(
// Can't have SetValue/SetValueOptional impls as otherwise one could use it to get
// immutable references from a mutable reference without borrowing via the value
impl ToOwned for $ref_name {
type Owned = $name;
fn to_owned(&self) -> $name {
self.copy()
}
}
unsafe impl Sync for $ref_name {}
unsafe impl Send for $ref_name {}
unsafe impl Sync for $name {}
unsafe impl Send for $name {}
}
};
);