1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use std::ptr;
4
5use glib::translate::*;
6use gst_base::{prelude::*, subclass::prelude::*};
7
8use crate::{ffi, AudioAggregator, AudioAggregatorPad};
9
10pub trait AudioAggregatorImpl: AudioAggregatorImplExt + AggregatorImpl {
11 fn create_output_buffer(&self, num_frames: u32) -> Option<gst::Buffer> {
12 self.parent_create_output_buffer(num_frames)
13 }
14
15 #[allow(clippy::too_many_arguments)]
16 fn aggregate_one_buffer(
17 &self,
18 pad: &AudioAggregatorPad,
19 inbuf: &gst::BufferRef,
20 in_offset: u32,
21 outbuf: &mut gst::BufferRef,
22 out_offset: u32,
23 num_frames: u32,
24 ) -> bool {
25 self.parent_aggregate_one_buffer(pad, inbuf, in_offset, outbuf, out_offset, num_frames)
26 }
27}
28
29mod sealed {
30 pub trait Sealed {}
31 impl<T: super::AudioAggregatorImplExt> Sealed for T {}
32}
33
34pub trait AudioAggregatorImplExt: sealed::Sealed + ObjectSubclass {
35 fn parent_create_output_buffer(&self, num_frames: u32) -> Option<gst::Buffer> {
36 unsafe {
37 let data = Self::type_data();
38 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioAggregatorClass;
39 let f = (*parent_class)
40 .create_output_buffer
41 .expect("Missing parent function `create_output_buffer`");
42
43 from_glib_full(f(
44 self.obj()
45 .unsafe_cast_ref::<AudioAggregator>()
46 .to_glib_none()
47 .0,
48 num_frames,
49 ))
50 }
51 }
52
53 fn parent_aggregate_one_buffer(
54 &self,
55 pad: &AudioAggregatorPad,
56 inbuf: &gst::BufferRef,
57 in_offset: u32,
58 outbuf: &mut gst::BufferRef,
59 out_offset: u32,
60 num_frames: u32,
61 ) -> bool {
62 unsafe {
63 let data = Self::type_data();
64 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioAggregatorClass;
65 let f = (*parent_class)
66 .aggregate_one_buffer
67 .expect("Missing parent function `aggregate_one_buffer`");
68
69 from_glib(f(
70 self.obj()
71 .unsafe_cast_ref::<AudioAggregator>()
72 .to_glib_none()
73 .0,
74 pad.to_glib_none().0,
75 inbuf.as_mut_ptr(),
76 in_offset,
77 outbuf.as_mut_ptr(),
78 out_offset,
79 num_frames,
80 ))
81 }
82 }
83}
84
85impl<T: AudioAggregatorImpl> AudioAggregatorImplExt for T {}
86
87unsafe impl<T: AudioAggregatorImpl> IsSubclassable<T> for AudioAggregator {
88 fn class_init(klass: &mut glib::Class<Self>) {
89 Self::parent_class_init::<T>(class:klass);
90
91 let klass: &mut GstAudioAggregatorClass = klass.as_mut();
92 klass.create_output_buffer = Some(audio_aggregator_create_output_buffer::<T>);
93 klass.aggregate_one_buffer = Some(audio_aggregator_aggregate_one_buffer::<T>);
94 }
95}
96
97unsafe extern "C" fn audio_aggregator_create_output_buffer<T: AudioAggregatorImpl>(
98 ptr: *mut ffi::GstAudioAggregator,
99 num_frames: u32,
100) -> *mut gst::ffi::GstBuffer {
101 let instance: &::Instance = &*(ptr as *mut T::Instance);
102 let imp: &T = instance.imp();
103
104 gst::panic_to_error!(imp, None, { imp.create_output_buffer(num_frames) })
105 .map(|buffer| buffer.into_glib_ptr())
106 .unwrap_or(default:ptr::null_mut())
107}
108
109unsafe extern "C" fn audio_aggregator_aggregate_one_buffer<T: AudioAggregatorImpl>(
110 ptr: *mut ffi::GstAudioAggregator,
111 pad: *mut ffi::GstAudioAggregatorPad,
112 inbuf: *mut gst::ffi::GstBuffer,
113 in_offset: u32,
114 outbuf: *mut gst::ffi::GstBuffer,
115 out_offset: u32,
116 num_frames: u32,
117) -> glib::ffi::gboolean {
118 let instance: &::Instance = &*(ptr as *mut T::Instance);
119 let imp: &T = instance.imp();
120
121 gstbool::panic_to_error!(imp, true, {
122 imp.aggregate_one_buffer(
123 &from_glib_borrow(pad),
124 gst::BufferRef::from_ptr(inbuf),
125 in_offset,
126 gst::BufferRef::from_mut_ptr(outbuf),
127 out_offset,
128 num_frames,
129 )
130 })
131 .into_glib()
132}
133