Commit e026c2f6 authored by Sebastian Dröge's avatar Sebastian Dröge 🍵

Directly poke at GstPad struct for retrieving pad function data

glib-sys was just fixed: https://github.com/gtk-rs/sys/pull/62
parent f4958b71
......@@ -669,30 +669,14 @@ unsafe extern "C" fn trampoline_pad_probe(
ret
}
// FIXME: Workaround for GHookList being truncated in the -sys bindings
macro_rules! pad_member_offset(
($pad:ident, $member:ident) => {{
let probes_addr = &(*$pad).probes as *const _ as usize;
let mode_addr = &(*$pad).mode as *const _ as usize;
let member_addr = &(*$pad).$member as *const _ as usize;
let hooklist_size = mem::size_of::<libc::c_ulong>()
// 16+1 bits, next is pointer => pointer alignment padding
+ mem::size_of::<*const libc::c_void>()
+ 5 * mem::size_of::<*const libc::c_void>();
let real_member_addr = member_addr - (mode_addr - probes_addr) + hooklist_size;
*(real_member_addr as *const *const libc::c_void)
}}
);
unsafe extern "C" fn trampoline_activate_function(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
) -> glib_ffi::gboolean {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, activatedata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>) -> bool + Send + Sync + 'static) = transmute(func);
let func: &&(Fn(&Pad, &Option<::Object>) -> bool + Send + Sync + 'static) =
transmute((*pad).activatedata);
func(&from_glib_borrow(pad), &from_glib_borrow(parent)).to_glib()
}
......@@ -704,12 +688,11 @@ unsafe extern "C" fn trampoline_activatemode_function(
active: glib_ffi::gboolean,
) -> glib_ffi::gboolean {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, activatemodedata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, ::PadMode, bool) -> bool
+ Send
+ Sync
+ 'static) = transmute(func);
+ 'static) = transmute((*pad).activatemodedata);
func(
&from_glib_borrow(pad),
......@@ -725,12 +708,11 @@ unsafe extern "C" fn trampoline_chain_function(
buffer: *mut ffi::GstBuffer,
) -> ffi::GstFlowReturn {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, chaindata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, ::Buffer) -> ::FlowReturn
+ Send
+ Sync
+ 'static) = transmute(func);
+ 'static) = transmute((*pad).chaindata);
func(
&from_glib_borrow(pad),
......@@ -745,12 +727,11 @@ unsafe extern "C" fn trampoline_chain_list_function(
list: *mut ffi::GstBufferList,
) -> ffi::GstFlowReturn {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, chainlistdata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, ::BufferList) -> ::FlowReturn
+ Send
+ Sync
+ 'static) = transmute(func);
+ 'static) = transmute((*pad).chainlistdata);
func(
&from_glib_borrow(pad),
......@@ -765,10 +746,9 @@ unsafe extern "C" fn trampoline_event_function(
event: *mut ffi::GstEvent,
) -> glib_ffi::gboolean {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, eventdata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, ::Event) -> bool + Send + Sync + 'static) =
transmute(func);
transmute((*pad).eventdata);
func(
&from_glib_borrow(pad),
......@@ -783,12 +763,11 @@ unsafe extern "C" fn trampoline_event_full_function(
event: *mut ffi::GstEvent,
) -> ffi::GstFlowReturn {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, eventdata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, ::Event) -> ::FlowReturn
+ Send
+ Sync
+ 'static) = transmute(func);
+ 'static) = transmute((*pad).eventdata);
func(
&from_glib_borrow(pad),
......@@ -805,13 +784,12 @@ unsafe extern "C" fn trampoline_getrange_function(
buffer: *mut *mut ffi::GstBuffer,
) -> ffi::GstFlowReturn {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, getrangedata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, u64, u32)
-> Result<::Buffer, ::FlowReturn>
+ Send
+ Sync
+ 'static) = transmute(func);
+ 'static) = transmute((*pad).getrangedata);
match func(
&from_glib_borrow(pad),
......@@ -832,10 +810,9 @@ unsafe extern "C" fn trampoline_iterate_internal_links_function(
parent: *mut ffi::GstObject,
) -> *mut ffi::GstIterator {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, iterintlinkdata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>) -> ::Iterator<Pad> + Send + Sync + 'static) =
transmute(func);
transmute((*pad).iterintlinkdata);
// Steal the iterator and return it
let ret = func(&from_glib_borrow(pad), &from_glib_borrow(parent));
......@@ -851,12 +828,11 @@ unsafe extern "C" fn trampoline_link_function(
peer: *mut ffi::GstPad,
) -> ffi::GstPadLinkReturn {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, linkdata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, &::Pad) -> ::PadLinkReturn
+ Send
+ Sync
+ 'static) = transmute(func);
+ 'static) = transmute((*pad).linkdata);
func(
&from_glib_borrow(pad),
......@@ -871,12 +847,11 @@ unsafe extern "C" fn trampoline_query_function(
query: *mut ffi::GstQuery,
) -> glib_ffi::gboolean {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, querydata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>, &mut ::QueryRef) -> bool
+ Send
+ Sync
+ 'static) = transmute(func);
+ 'static) = transmute((*pad).querydata);
func(
&from_glib_borrow(pad),
......@@ -890,9 +865,9 @@ unsafe extern "C" fn trampoline_unlink_function(
parent: *mut ffi::GstObject,
) {
let _guard = CallbackGuard::new();
let func = pad_member_offset!(pad, unlinkdata);
#[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
let func: &&(Fn(&Pad, &Option<::Object>) + Send + Sync + 'static) = transmute(func);
let func: &&(Fn(&Pad, &Option<::Object>) + Send + Sync + 'static) =
transmute((*pad).unlinkdata);
func(&from_glib_borrow(pad), &from_glib_borrow(parent))
}
......
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