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gstreamer: Add bindings for querying allocation params

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This can be used to query downstream for custom allocators.
This commit is contained in:
Philippe Normand 2021-10-12 15:46:41 +01:00
parent 8fb37c5134
commit 6d88e18772
2 changed files with 74 additions and 0 deletions
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8
gstreamer/src/allocation_params.rs
View file

@ -69,3 +69,11 @@ impl<'a> ToGlibPtr<'a, *const ffi::GstAllocationParams> for AllocationParams {
Stash(&self.0, self)
}
}
impl FromGlib<ffi::GstAllocationParams> for AllocationParams {
#[allow(unused_unsafe)]
unsafe fn from_glib(value: ffi::GstAllocationParams) -> Self {
assert_initialized_main_thread!();
AllocationParams(value)
}
}

66
gstreamer/src/query.rs
View file

@ -9,6 +9,7 @@ use std::mem;
use std::ops::{Deref, DerefMut};
use std::ptr;
use glib::object::IsA;
use glib::translate::*;
mini_object_wrapper!(Query, QueryRef, ffi::GstQuery, || {
@ -947,6 +948,28 @@ impl<T: AsPtr> Allocation<T> {
}
}
#[doc(alias = "gst_allocation_params")]
#[doc(alias = "gst_query_get_n_allocation_params")]
pub fn allocation_params(&self) -> Vec<(Option<crate::Allocator>, crate::AllocationParams)> {
unsafe {
let n = ffi::gst_query_get_n_allocation_params(self.0.as_ptr());
let mut params = Vec::with_capacity(n as usize);
for i in 0..n {
let mut allocator = ptr::null_mut();
let mut p = mem::MaybeUninit::uninit();
ffi::gst_query_parse_nth_allocation_param(
self.0.as_ptr(),
i,
&mut allocator,
p.as_mut_ptr(),
);
params.push((from_glib_full(allocator), from_glib(p.assume_init())));
}
params
}
}
#[doc(alias = "get_allocation_pools")]
#[doc(alias = "gst_query_get_n_allocation_pools")]
pub fn allocation_pools(&self) -> Vec<(Option<crate::BufferPool>, u32, u32, u32)> {
@ -1070,6 +1093,49 @@ impl<T: AsMutPtr> Allocation<T> {
}
}
#[doc(alias = "gst_query_add_allocation_param")]
pub fn add_allocation_param(
&mut self,
allocator: Option<&impl IsA<crate::Allocator>>,
params: crate::AllocationParams,
) {
unsafe {
ffi::gst_query_add_allocation_param(
self.0.as_mut_ptr(),
allocator.to_glib_none().0 as *mut ffi::GstAllocator,
params.as_ptr(),
);
}
}
#[doc(alias = "gst_query_set_nth_allocation_param")]
pub fn set_nth_allocation_param(
&mut self,
idx: u32,
allocator: Option<&impl IsA<crate::Allocator>>,
params: crate::AllocationParams,
) {
unsafe {
let n = ffi::gst_query_get_n_allocation_params(self.0.as_ptr());
assert!(idx < n);
ffi::gst_query_set_nth_allocation_param(
self.0.as_mut_ptr(),
idx,
allocator.to_glib_none().0 as *mut ffi::GstAllocator,
params.as_ptr(),
);
}
}
#[doc(alias = "gst_query_remove_nth_allocation_param")]
pub fn remove_nth_allocation_param(&mut self, idx: u32) {
unsafe {
let n = ffi::gst_query_get_n_allocation_params(self.0.as_ptr());
assert!(idx < n);
ffi::gst_query_remove_nth_allocation_param(self.0.as_mut_ptr(), idx);
}
}
#[doc(alias = "gst_query_add_allocation_meta")]
pub fn add_allocation_meta<U: crate::MetaAPI>(
&mut self,