1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
use gst_base_sys;
use gst_sys;
use glib::subclass::prelude::*;
use glib::translate::*;
use gst;
use gst::subclass::prelude::*;
use std::ptr;
use super::base_src::BaseSrcImpl;
use PushSrc;
use PushSrcClass;
pub trait PushSrcImpl: PushSrcImplExt + BaseSrcImpl + Send + Sync + 'static {
fn fill(
&self,
element: &PushSrc,
buffer: &mut gst::BufferRef,
) -> Result<gst::FlowSuccess, gst::FlowError> {
PushSrcImplExt::parent_fill(self, element, buffer)
}
fn alloc(&self, element: &PushSrc) -> Result<gst::Buffer, gst::FlowError> {
PushSrcImplExt::parent_alloc(self, element)
}
fn create(&self, element: &PushSrc) -> Result<gst::Buffer, gst::FlowError> {
PushSrcImplExt::parent_create(self, element)
}
}
pub trait PushSrcImplExt {
fn parent_fill(
&self,
element: &PushSrc,
buffer: &mut gst::BufferRef,
) -> Result<gst::FlowSuccess, gst::FlowError>;
fn parent_alloc(&self, element: &PushSrc) -> Result<gst::Buffer, gst::FlowError>;
fn parent_create(&self, element: &PushSrc) -> Result<gst::Buffer, gst::FlowError>;
}
impl<T: PushSrcImpl + ObjectImpl> PushSrcImplExt for T {
fn parent_fill(
&self,
element: &PushSrc,
buffer: &mut gst::BufferRef,
) -> Result<gst::FlowSuccess, gst::FlowError> {
unsafe {
let data = self.get_type_data();
let parent_class =
data.as_ref().get_parent_class() as *mut gst_base_sys::GstPushSrcClass;
(*parent_class)
.fill
.map(|f| {
gst::FlowReturn::from_glib(f(element.to_glib_none().0, buffer.as_mut_ptr()))
})
.unwrap_or(gst::FlowReturn::NotSupported)
.into_result()
}
}
fn parent_alloc(&self, element: &PushSrc) -> Result<gst::Buffer, gst::FlowError> {
unsafe {
let data = self.get_type_data();
let parent_class =
data.as_ref().get_parent_class() as *mut gst_base_sys::GstPushSrcClass;
(*parent_class)
.alloc
.map(|f| {
let mut buffer_ptr: *mut gst_sys::GstBuffer = ptr::null_mut();
let buffer_ref = &mut buffer_ptr as *mut _ as *mut gst_sys::GstBuffer;
let res = gst::FlowReturn::from_glib(f(element.to_glib_none().0, buffer_ref));
res.into_result_value(|| from_glib_full(buffer_ref))
})
.unwrap_or(Err(gst::FlowError::NotSupported))
}
}
fn parent_create(&self, element: &PushSrc) -> Result<gst::Buffer, gst::FlowError> {
unsafe {
let data = self.get_type_data();
let parent_class =
data.as_ref().get_parent_class() as *mut gst_base_sys::GstPushSrcClass;
(*parent_class)
.create
.map(|f| {
let mut buffer_ptr: *mut gst_sys::GstBuffer = ptr::null_mut();
let buffer_ref = &mut buffer_ptr as *mut _ as *mut gst_sys::GstBuffer;
let res = gst::FlowReturn::from_glib(f(element.to_glib_none().0, buffer_ref));
res.into_result_value(|| from_glib_full(buffer_ref))
})
.unwrap_or(Err(gst::FlowError::NotSupported))
}
}
}
unsafe impl<T: ObjectSubclass + PushSrcImpl> IsSubclassable<T> for PushSrcClass
where
<T as ObjectSubclass>::Instance: PanicPoison,
{
fn override_vfuncs(&mut self) {
<::BaseSrcClass as IsSubclassable<T>>::override_vfuncs(self);
unsafe {
let klass = &mut *(self as *mut Self as *mut gst_base_sys::GstPushSrcClass);
klass.fill = Some(push_src_fill::<T>);
klass.alloc = Some(push_src_alloc::<T>);
klass.create = Some(push_src_create::<T>);
}
}
}
unsafe extern "C" fn push_src_fill<T: ObjectSubclass>(
ptr: *mut gst_base_sys::GstPushSrc,
buffer: *mut gst_sys::GstBuffer,
) -> gst_sys::GstFlowReturn
where
T: PushSrcImpl,
T::Instance: PanicPoison,
{
let instance = &*(ptr as *mut T::Instance);
let imp = instance.get_impl();
let wrap: Borrowed<PushSrc> = from_glib_borrow(ptr);
let buffer = gst::BufferRef::from_mut_ptr(buffer);
gst_panic_to_error!(&wrap, &instance.panicked(), gst::FlowReturn::Error, {
PushSrcImpl::fill(imp, &wrap, buffer).into()
})
.to_glib()
}
unsafe extern "C" fn push_src_alloc<T: ObjectSubclass>(
ptr: *mut gst_base_sys::GstPushSrc,
buffer_ptr: *mut gst_sys::GstBuffer,
) -> gst_sys::GstFlowReturn
where
T: PushSrcImpl,
T::Instance: PanicPoison,
{
let instance = &*(ptr as *mut T::Instance);
let imp = instance.get_impl();
let wrap: Borrowed<PushSrc> = from_glib_borrow(ptr);
let buffer_ptr = buffer_ptr as *mut *mut gst_sys::GstBuffer;
gst_panic_to_error!(&wrap, &instance.panicked(), gst::FlowReturn::Error, {
match PushSrcImpl::alloc(imp, &wrap) {
Ok(buffer) => {
*buffer_ptr = buffer.into_ptr();
gst::FlowReturn::Ok
}
Err(err) => gst::FlowReturn::from(err),
}
})
.to_glib()
}
unsafe extern "C" fn push_src_create<T: ObjectSubclass>(
ptr: *mut gst_base_sys::GstPushSrc,
buffer_ptr: *mut gst_sys::GstBuffer,
) -> gst_sys::GstFlowReturn
where
T: PushSrcImpl,
T::Instance: PanicPoison,
{
let instance = &*(ptr as *mut T::Instance);
let imp = instance.get_impl();
let wrap: Borrowed<PushSrc> = from_glib_borrow(ptr);
let buffer_ptr = buffer_ptr as *mut *mut gst_sys::GstBuffer;
gst_panic_to_error!(&wrap, &instance.panicked(), gst::FlowReturn::Error, {
match PushSrcImpl::create(imp, &wrap) {
Ok(buffer) => {
*buffer_ptr = buffer.into_ptr();
gst::FlowReturn::Ok
}
Err(err) => gst::FlowReturn::from(err),
}
})
.to_glib()
}