mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-05-07 19:02:40 +00:00
616 lines
23 KiB
Rust
616 lines
23 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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use glib::translate::*;
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use std::fmt;
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pub trait IsMiniObject:
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AsRef<Self::RefType> + FromGlibPtrFull<*mut Self::FfiType> + Send + Sync + 'static
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{
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type RefType;
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type FfiType;
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}
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#[macro_export]
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macro_rules! mini_object_wrapper (
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($name:ident, $ref_name:ident, $ffi_name:path) => {
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#[repr(transparent)]
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pub struct $name {
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obj: std::ptr::NonNull<$ffi_name>,
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}
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#[repr(transparent)]
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pub struct $ref_name($ffi_name);
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impl $crate::miniobject::IsMiniObject for $name {
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type RefType = $ref_name;
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type FfiType = $ffi_name;
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}
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impl $name {
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pub unsafe fn from_glib_none(ptr: *const $ffi_name) -> Self {
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skip_assert_initialized!();
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assert!(!ptr.is_null());
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$crate::ffi::gst_mini_object_ref(ptr as *mut $crate::ffi::GstMiniObject);
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$name {
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obj: std::ptr::NonNull::new_unchecked(ptr as *mut $ffi_name),
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}
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}
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pub unsafe fn from_glib_full(ptr: *const $ffi_name) -> Self {
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skip_assert_initialized!();
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assert!(!ptr.is_null());
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$name {
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obj: std::ptr::NonNull::new_unchecked(ptr as *mut $ffi_name),
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}
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}
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pub unsafe fn from_glib_borrow(ptr: *const $ffi_name) -> $crate::glib::translate::Borrowed<Self> {
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skip_assert_initialized!();
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assert!(!ptr.is_null());
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$crate::glib::translate::Borrowed::new($name {
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obj: std::ptr::NonNull::new_unchecked(ptr as *mut $ffi_name),
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})
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}
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pub unsafe fn replace_ptr(&mut self, ptr: *mut $ffi_name) {
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assert!(!ptr.is_null());
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self.obj = std::ptr::NonNull::new_unchecked(ptr);
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}
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pub fn make_mut(&mut self) -> &mut $ref_name {
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unsafe {
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if self.is_writable() {
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return &mut *(self.obj.as_mut() as *mut $ffi_name as *mut $ref_name);
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}
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let ptr = $crate::ffi::gst_mini_object_make_writable(
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self.as_mut_ptr() as *mut $crate::ffi::GstMiniObject
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);
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self.replace_ptr(ptr as *mut $ffi_name);
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assert!(self.is_writable());
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&mut *(self.obj.as_mut() as *mut $ffi_name as *mut $ref_name)
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}
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}
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pub fn get_mut(&mut self) -> Option<&mut $ref_name> {
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if self.is_writable() {
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Some(unsafe { &mut *(self.obj.as_mut() as *mut $ffi_name as *mut $ref_name) })
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} else {
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None
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}
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}
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#[doc(alias = "gst_mini_object_is_writable")]
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pub fn is_writable(&self) -> bool {
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unsafe {
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$crate::glib::translate::from_glib($crate::ffi::gst_mini_object_is_writable(
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self.as_ptr() as *const $crate::ffi::GstMiniObject
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))
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}
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}
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#[must_use]
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pub fn upcast(self) -> $crate::miniobject::MiniObject {
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use $crate::glib::translate::IntoGlibPtr;
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unsafe {
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from_glib_full(self.into_glib_ptr() as *mut $crate::ffi::GstMiniObject)
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}
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}
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}
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impl $crate::glib::translate::IntoGlibPtr<*mut $ffi_name> for $name {
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unsafe fn into_glib_ptr(self) -> *mut $ffi_name {
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let s = std::mem::ManuallyDrop::new(self);
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s.as_mut_ptr()
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}
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}
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impl Clone for $name {
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fn clone(&self) -> Self {
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unsafe { $name::from_glib_none(self.as_ptr()) }
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}
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}
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impl Drop for $name {
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fn drop(&mut self) {
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unsafe {
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$crate::ffi::gst_mini_object_unref(self.as_mut_ptr() as *mut $crate::ffi::GstMiniObject);
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}
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}
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}
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impl std::ops::Deref for $name {
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type Target = $ref_name;
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fn deref(&self) -> &Self::Target {
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unsafe { &*(self.obj.as_ref() as *const $ffi_name as *const $ref_name) }
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}
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}
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impl AsRef<$ref_name> for $name {
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fn as_ref(&self) -> &$ref_name {
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&*self
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}
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}
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impl std::borrow::Borrow<$ref_name> for $name {
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fn borrow(&self) -> &$ref_name {
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&*self
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}
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}
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impl<'a> $crate::glib::translate::ToGlibPtr<'a, *const $ffi_name> for $name {
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type Storage = &'a Self;
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fn to_glib_none(&'a self) -> $crate::glib::translate::Stash<'a, *const $ffi_name, Self> {
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$crate::glib::translate::Stash( self.as_ptr() , self)
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}
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fn to_glib_full(&self) -> *const $ffi_name {
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unsafe {
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$crate::ffi::gst_mini_object_ref(self.as_mut_ptr() as *mut $crate::ffi::GstMiniObject);
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self.as_ptr()
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}
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}
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}
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impl<'a> $crate::glib::translate::ToGlibPtr<'a, *mut $ffi_name> for $name {
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type Storage = &'a Self;
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fn to_glib_none(&'a self) -> $crate::glib::translate::Stash<'a, *mut $ffi_name, Self> {
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$crate::glib::translate::Stash( self.as_mut_ptr() , self)
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}
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fn to_glib_full(&self) -> *mut $ffi_name {
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unsafe {
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$crate::ffi::gst_mini_object_ref(self.as_mut_ptr() as *mut $crate::ffi::GstMiniObject);
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self.as_mut_ptr()
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}
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}
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}
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impl<'a> $crate::glib::translate::ToGlibPtrMut<'a, *mut $ffi_name> for $name {
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type Storage = &'a mut Self;
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fn to_glib_none_mut(&'a mut self) -> $crate::glib::translate::StashMut<*mut $ffi_name, Self> {
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self.make_mut();
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$crate::glib::translate::StashMut( self.as_mut_ptr() , self)
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}
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}
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impl<'a> $crate::glib::translate::ToGlibContainerFromSlice<'a, *mut *mut $ffi_name> for $name {
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#[allow(clippy::type_complexity)]
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type Storage = (
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Vec<$crate::glib::translate::Stash<'a, *mut $ffi_name, Self>>,
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Option<Vec<*mut $ffi_name>>,
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);
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fn to_glib_none_from_slice(t: &'a [$name]) -> (*mut *mut $ffi_name, Self::Storage) {
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skip_assert_initialized!();
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let v: Vec<_> = t.iter().map(|s| $crate::glib::translate::ToGlibPtr::to_glib_none(s)).collect();
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let mut v_ptr: Vec<_> = v.iter().map(|s| s.0).collect();
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v_ptr.push(std::ptr::null_mut() as *mut $ffi_name);
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(v_ptr.as_ptr() as *mut *mut $ffi_name, (v, Some(v_ptr)))
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}
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fn to_glib_container_from_slice(t: &'a [$name]) -> (*mut *mut $ffi_name, Self::Storage) {
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skip_assert_initialized!();
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let v: Vec<_> = t.iter().map(|s| $crate::glib::translate::ToGlibPtr::to_glib_none(s)).collect();
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let v_ptr = unsafe {
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let v_ptr = $crate::glib::ffi::g_malloc0(std::mem::size_of::<*mut $ffi_name>() * t.len() + 1)
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as *mut *mut $ffi_name;
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for (i, s) in v.iter().enumerate() {
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std::ptr::write(v_ptr.add(i), s.0);
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}
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v_ptr
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};
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(v_ptr, (v, None))
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}
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fn to_glib_full_from_slice(t: &[$name]) -> *mut *mut $ffi_name {
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skip_assert_initialized!();
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unsafe {
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let v_ptr = $crate::glib::ffi::g_malloc0(std::mem::size_of::<*mut $ffi_name>() * t.len() + 1)
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as *mut *mut $ffi_name;
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for (i, s) in t.iter().enumerate() {
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std::ptr::write(v_ptr.add(i), $crate::glib::translate::ToGlibPtr::to_glib_full(s));
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}
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v_ptr
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}
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}
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}
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impl<'a> $crate::glib::translate::ToGlibContainerFromSlice<'a, *const *mut $ffi_name>
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for $name
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{
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#[allow(clippy::type_complexity)]
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type Storage = (
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Vec<$crate::glib::translate::Stash<'a, *mut $ffi_name, $name>>,
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Option<Vec<*mut $ffi_name>>,
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);
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fn to_glib_none_from_slice(t: &'a [$name]) -> (*const *mut $ffi_name, Self::Storage) {
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skip_assert_initialized!();
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let (ptr, stash) =
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$crate::glib::translate::ToGlibContainerFromSlice::<'a, *mut *mut $ffi_name>::to_glib_none_from_slice(t);
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(ptr as *const *mut $ffi_name, stash)
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}
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fn to_glib_container_from_slice(_: &'a [$name]) -> (*const *mut $ffi_name, Self::Storage) {
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skip_assert_initialized!();
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// Can't have consumer free a *const pointer
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unimplemented!()
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}
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fn to_glib_full_from_slice(_: &[$name]) -> *const *mut $ffi_name {
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skip_assert_initialized!();
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// Can't have consumer free a *const pointer
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unimplemented!()
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}
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}
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impl $crate::glib::translate::FromGlibPtrNone<*const $ffi_name> for $name {
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unsafe fn from_glib_none(ptr: *const $ffi_name) -> Self {
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Self::from_glib_none(ptr)
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}
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}
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impl $crate::glib::translate::FromGlibPtrNone<*mut $ffi_name> for $name {
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unsafe fn from_glib_none(ptr: *mut $ffi_name) -> Self {
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Self::from_glib_none(ptr)
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}
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}
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impl $crate::glib::translate::FromGlibPtrFull<*const $ffi_name> for $name {
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unsafe fn from_glib_full(ptr: *const $ffi_name) -> Self {
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Self::from_glib_full(ptr)
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}
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}
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impl $crate::glib::translate::FromGlibPtrFull<*mut $ffi_name> for $name {
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unsafe fn from_glib_full(ptr: *mut $ffi_name) -> Self {
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Self::from_glib_full(ptr)
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}
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}
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impl $crate::glib::translate::FromGlibPtrBorrow<*const $ffi_name> for $name {
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unsafe fn from_glib_borrow(ptr: *const $ffi_name) -> $crate::glib::translate::Borrowed<Self> {
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Self::from_glib_borrow(ptr)
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}
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}
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impl $crate::glib::translate::FromGlibPtrBorrow<*mut $ffi_name> for $name {
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unsafe fn from_glib_borrow(ptr: *mut $ffi_name) -> $crate::glib::translate::Borrowed<Self> {
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Self::from_glib_borrow(ptr)
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}
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}
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impl $crate::glib::translate::FromGlibContainerAsVec<*mut $ffi_name, *mut *mut $ffi_name>
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for $name
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{
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unsafe fn from_glib_none_num_as_vec(ptr: *mut *mut $ffi_name, num: usize) -> Vec<Self> {
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if num == 0 || ptr.is_null() {
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return Vec::new();
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}
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let mut res = Vec::with_capacity(num);
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for i in 0..num {
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res.push($crate::glib::translate::from_glib_none(std::ptr::read(ptr.add(i))));
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}
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res
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}
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unsafe fn from_glib_container_num_as_vec(ptr: *mut *mut $ffi_name, num: usize) -> Vec<Self> {
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let res = $crate::glib::translate::FromGlibContainerAsVec::from_glib_none_num_as_vec(ptr, num);
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$crate::glib::ffi::g_free(ptr as *mut _);
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res
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}
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unsafe fn from_glib_full_num_as_vec(ptr: *mut *mut $ffi_name, num: usize) -> Vec<Self> {
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if num == 0 || ptr.is_null() {
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return Vec::new();
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}
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let mut res = Vec::with_capacity(num);
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for i in 0..num {
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res.push($crate::glib::translate::from_glib_full(std::ptr::read(ptr.add(i))));
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}
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$crate::glib::ffi::g_free(ptr as *mut _);
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res
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}
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}
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impl $crate::glib::translate::FromGlibPtrArrayContainerAsVec<*mut $ffi_name, *mut *mut $ffi_name>
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for $name
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{
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unsafe fn from_glib_none_as_vec(ptr: *mut *mut $ffi_name) -> Vec<Self> {
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$crate::glib::translate::FromGlibContainerAsVec::from_glib_none_num_as_vec(ptr, glib::translate::c_ptr_array_len(ptr))
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}
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unsafe fn from_glib_container_as_vec(ptr: *mut *mut $ffi_name) -> Vec<Self> {
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$crate::glib::translate::FromGlibContainerAsVec::from_glib_container_num_as_vec(ptr, glib::translate::c_ptr_array_len(ptr))
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}
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unsafe fn from_glib_full_as_vec(ptr: *mut *mut $ffi_name) -> Vec<Self> {
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$crate::glib::translate::FromGlibContainerAsVec::from_glib_full_num_as_vec(ptr, glib::translate::c_ptr_array_len(ptr))
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}
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}
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impl $crate::glib::translate::FromGlibContainerAsVec<*mut $ffi_name, *const *mut $ffi_name>
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for $name
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{
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unsafe fn from_glib_none_num_as_vec(ptr: *const *mut $ffi_name, num: usize) -> Vec<Self> {
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$crate::glib::translate::FromGlibContainerAsVec::from_glib_none_num_as_vec(ptr as *mut *mut _, num)
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}
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unsafe fn from_glib_container_num_as_vec(_: *const *mut $ffi_name, _: usize) -> Vec<Self> {
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// Can't free a *const
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unimplemented!()
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}
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unsafe fn from_glib_full_num_as_vec(_: *const *mut $ffi_name, _: usize) -> Vec<Self> {
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// Can't free a *const
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unimplemented!()
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}
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}
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impl $crate::glib::translate::FromGlibPtrArrayContainerAsVec<*mut $ffi_name, *const *mut $ffi_name> for $name
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{
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unsafe fn from_glib_none_as_vec(ptr: *const *mut $ffi_name) -> Vec<Self> {
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$crate::glib::translate::FromGlibPtrArrayContainerAsVec::from_glib_none_as_vec(ptr as *mut *mut _)
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}
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unsafe fn from_glib_container_as_vec(_: *const *mut $ffi_name) -> Vec<Self> {
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// Can't free a *const
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unimplemented!()
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}
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unsafe fn from_glib_full_as_vec(_: *const *mut $ffi_name) -> Vec<Self> {
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// Can't free a *const
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unimplemented!()
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}
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}
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impl $crate::glib::translate::GlibPtrDefault for $name {
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type GlibType = *mut $ffi_name;
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}
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impl $ref_name {
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pub fn as_ptr(&self) -> *const $ffi_name {
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self as *const Self as *const $ffi_name
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}
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pub fn as_mut_ptr(&self) -> *mut $ffi_name {
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self as *const Self as *mut $ffi_name
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}
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pub unsafe fn from_ptr<'a>(ptr: *const $ffi_name) -> &'a Self {
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assert!(!ptr.is_null());
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&*(ptr as *const Self)
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}
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pub unsafe fn from_mut_ptr<'a>(ptr: *mut $ffi_name) -> &'a mut Self {
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assert!(!ptr.is_null());
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assert_ne!(
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$crate::ffi::gst_mini_object_is_writable(ptr as *mut $crate::ffi::GstMiniObject),
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$crate::glib::ffi::GFALSE
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);
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&mut *(ptr as *mut Self)
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}
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#[doc(alias = "gst_mini_object_copy")]
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pub fn copy(&self) -> $name {
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unsafe {
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$name::from_glib_full($crate::ffi::gst_mini_object_copy(
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self.as_ptr() as *const $crate::ffi::GstMiniObject
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) as *const $ffi_name)
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}
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}
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pub fn upcast_ref(&self) -> &$crate::miniobject::MiniObjectRef {
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unsafe {
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&*(self.as_ptr() as *const $crate::miniobject::MiniObjectRef)
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}
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}
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pub fn upcast_mut(&mut self) -> &mut $crate::miniobject::MiniObjectRef {
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unsafe {
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&mut *(self.as_mut_ptr() as *mut $crate::miniobject::MiniObjectRef)
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}
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}
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pub fn ptr_eq(this: &$ref_name, other: &$ref_name) -> bool {
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skip_assert_initialized!();
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this.as_ptr() == other.as_ptr()
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}
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}
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impl $crate::glib::translate::GlibPtrDefault for $ref_name {
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type GlibType = *mut $ffi_name;
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}
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impl ToOwned for $ref_name {
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type Owned = $name;
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fn to_owned(&self) -> $name {
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self.copy()
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}
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}
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unsafe impl Sync for $ref_name {}
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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 glib::value::ValueType for $name {
|
|
type Type = Self;
|
|
}
|
|
|
|
impl glib::value::ValueTypeOptional for $name { }
|
|
|
|
unsafe impl<'a> $crate::glib::value::FromValue<'a> for $name {
|
|
type Checker = $crate::glib::value::GenericValueTypeOrNoneChecker<Self>;
|
|
|
|
unsafe fn from_value(value: &'a $crate::glib::Value) -> Self {
|
|
skip_assert_initialized!();
|
|
$crate::glib::translate::from_glib_none(
|
|
$crate::glib::gobject_ffi::g_value_get_boxed($crate::glib::translate::ToGlibPtr::to_glib_none(value).0) as *mut $ffi_name
|
|
)
|
|
}
|
|
}
|
|
|
|
unsafe impl<'a> $crate::glib::value::FromValue<'a> for &'a $name {
|
|
type Checker = $crate::glib::value::GenericValueTypeOrNoneChecker<Self>;
|
|
|
|
unsafe fn from_value(value: &'a $crate::glib::Value) -> Self {
|
|
skip_assert_initialized!();
|
|
assert_eq!(std::mem::size_of::<$name>(), std::mem::size_of::<$crate::glib::ffi::gpointer>());
|
|
let value = &*(value as *const $crate::glib::Value as *const $crate::glib::gobject_ffi::GValue);
|
|
let ptr = &value.data[0].v_pointer as *const $crate::glib::ffi::gpointer as *const *const $ffi_name;
|
|
assert!(!(*ptr).is_null());
|
|
&*(ptr as *const $name)
|
|
}
|
|
}
|
|
|
|
impl $crate::glib::value::ToValue for $name {
|
|
fn to_value(&self) -> $crate::glib::Value {
|
|
let mut value = $crate::glib::Value::for_value_type::<Self>();
|
|
unsafe {
|
|
$crate::glib::gobject_ffi::g_value_set_boxed(
|
|
$crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(&mut value).0,
|
|
$crate::glib::translate::ToGlibPtr::<*const $ffi_name>::to_glib_none(self).0 as *mut _,
|
|
)
|
|
}
|
|
value
|
|
}
|
|
|
|
fn value_type(&self) -> $crate::glib::Type {
|
|
<Self as $crate::glib::StaticType>::static_type()
|
|
}
|
|
}
|
|
|
|
impl $crate::glib::value::ToValueOptional for $name {
|
|
fn to_value_optional(s: Option<&Self>) -> $crate::glib::Value {
|
|
skip_assert_initialized!();
|
|
let mut value = $crate::glib::Value::for_value_type::<Self>();
|
|
unsafe {
|
|
$crate::glib::gobject_ffi::g_value_set_boxed(
|
|
$crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(&mut value).0,
|
|
$crate::glib::translate::ToGlibPtr::<*const $ffi_name>::to_glib_none(&s).0 as *mut _,
|
|
)
|
|
}
|
|
value
|
|
}
|
|
}
|
|
|
|
impl From<$name> for $crate::glib::Value {
|
|
fn from(v: $name) -> $crate::glib::Value {
|
|
skip_assert_initialized!();
|
|
let mut value = $crate::glib::Value::for_value_type::<$name>();
|
|
unsafe {
|
|
$crate::glib::gobject_ffi::g_value_take_boxed(
|
|
$crate::glib::translate::ToGlibPtrMut::to_glib_none_mut(&mut value).0,
|
|
$crate::glib::translate::IntoGlibPtr::<*mut $ffi_name>::into_glib_ptr(v) as *mut _,
|
|
)
|
|
}
|
|
value
|
|
}
|
|
}
|
|
|
|
unsafe impl<'a> $crate::glib::value::FromValue<'a> for &'a $ref_name {
|
|
type Checker = $crate::glib::value::GenericValueTypeOrNoneChecker<Self>;
|
|
|
|
unsafe fn from_value(value: &'a $crate::glib::Value) -> Self {
|
|
skip_assert_initialized!();
|
|
&*($crate::glib::gobject_ffi::g_value_get_boxed($crate::glib::translate::ToGlibPtr::to_glib_none(value).0) as *const $ref_name)
|
|
}
|
|
}
|
|
|
|
// 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
|
|
};
|
|
);
|
|
|
|
#[cfg(not(any(feature = "v1_20", feature = "dox")))]
|
|
mini_object_wrapper!(MiniObject, MiniObjectRef, ffi::GstMiniObject);
|
|
|
|
#[cfg(any(feature = "v1_20", feature = "dox"))]
|
|
mini_object_wrapper!(MiniObject, MiniObjectRef, ffi::GstMiniObject, || {
|
|
ffi::gst_mini_object_get_type()
|
|
});
|
|
|
|
impl MiniObject {
|
|
pub fn downcast<T: IsMiniObject + glib::StaticType>(self) -> Result<T, Self> {
|
|
if self.type_().is_a(T::static_type()) {
|
|
unsafe { Ok(from_glib_full(self.into_glib_ptr() as *mut T::FfiType)) }
|
|
} else {
|
|
Err(self)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for MiniObject {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
self.as_ref().fmt(f)
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for MiniObjectRef {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
f.debug_struct("MiniObject")
|
|
.field("ptr", &self.as_ptr())
|
|
.field("type", &self.type_())
|
|
.finish()
|
|
}
|
|
}
|
|
|
|
impl MiniObjectRef {
|
|
pub fn type_(&self) -> glib::Type {
|
|
unsafe { from_glib((*self.as_ptr()).type_) }
|
|
}
|
|
|
|
pub fn downcast_ref<T: IsMiniObject + glib::StaticType>(&self) -> Option<&T::RefType> {
|
|
if self.type_().is_a(T::static_type()) {
|
|
unsafe { Some(&*(self as *const Self as *const T::RefType)) }
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
pub fn downcast_mut<T: IsMiniObject + glib::StaticType>(&mut self) -> Option<&mut T::RefType> {
|
|
if self.type_().is_a(T::static_type()) {
|
|
unsafe { Some(&mut *(self as *mut Self as *mut T::RefType)) }
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|