gstreamer_audio/subclass/
audio_decoder.rs1use std::{mem, ptr};
4
5use glib::translate::*;
6use gst::subclass::prelude::*;
7
8use crate::{ffi, prelude::*, AudioDecoder};
9
10pub trait AudioDecoderImpl: AudioDecoderImplExt + ElementImpl {
11 fn open(&self) -> Result<(), gst::ErrorMessage> {
12 self.parent_open()
13 }
14
15 fn close(&self) -> Result<(), gst::ErrorMessage> {
16 self.parent_close()
17 }
18
19 fn start(&self) -> Result<(), gst::ErrorMessage> {
20 self.parent_start()
21 }
22
23 fn stop(&self) -> Result<(), gst::ErrorMessage> {
24 self.parent_stop()
25 }
26
27 fn set_format(&self, caps: &gst::Caps) -> Result<(), gst::LoggableError> {
28 self.parent_set_format(caps)
29 }
30
31 fn parse(&self, adapter: &gst_base::Adapter) -> Result<(u32, u32), gst::FlowError> {
32 self.parent_parse(adapter)
33 }
34
35 fn handle_frame(
36 &self,
37 buffer: Option<&gst::Buffer>,
38 ) -> Result<gst::FlowSuccess, gst::FlowError> {
39 self.parent_handle_frame(buffer)
40 }
41
42 fn pre_push(&self, buffer: gst::Buffer) -> Result<Option<gst::Buffer>, gst::FlowError> {
43 self.parent_pre_push(buffer)
44 }
45
46 fn flush(&self, hard: bool) {
47 self.parent_flush(hard)
48 }
49
50 fn negotiate(&self) -> Result<(), gst::LoggableError> {
51 self.parent_negotiate()
52 }
53
54 fn caps(&self, filter: Option<&gst::Caps>) -> gst::Caps {
55 self.parent_caps(filter)
56 }
57
58 fn sink_event(&self, event: gst::Event) -> bool {
59 self.parent_sink_event(event)
60 }
61
62 fn sink_query(&self, query: &mut gst::QueryRef) -> bool {
63 self.parent_sink_query(query)
64 }
65
66 fn src_event(&self, event: gst::Event) -> bool {
67 self.parent_src_event(event)
68 }
69
70 fn src_query(&self, query: &mut gst::QueryRef) -> bool {
71 self.parent_src_query(query)
72 }
73
74 fn propose_allocation(
75 &self,
76 query: &mut gst::query::Allocation,
77 ) -> Result<(), gst::LoggableError> {
78 self.parent_propose_allocation(query)
79 }
80
81 fn decide_allocation(
82 &self,
83 query: &mut gst::query::Allocation,
84 ) -> Result<(), gst::LoggableError> {
85 self.parent_decide_allocation(query)
86 }
87}
88
89mod sealed {
90 pub trait Sealed {}
91 impl<T: super::AudioDecoderImplExt> Sealed for T {}
92}
93
94pub trait AudioDecoderImplExt: sealed::Sealed + ObjectSubclass {
95 fn parent_open(&self) -> Result<(), gst::ErrorMessage> {
96 unsafe {
97 let data = Self::type_data();
98 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
99 (*parent_class)
100 .open
101 .map(|f| {
102 if from_glib(f(self
103 .obj()
104 .unsafe_cast_ref::<AudioDecoder>()
105 .to_glib_none()
106 .0))
107 {
108 Ok(())
109 } else {
110 Err(gst::error_msg!(
111 gst::CoreError::StateChange,
112 ["Parent function `open` failed"]
113 ))
114 }
115 })
116 .unwrap_or(Ok(()))
117 }
118 }
119
120 fn parent_close(&self) -> Result<(), gst::ErrorMessage> {
121 unsafe {
122 let data = Self::type_data();
123 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
124 (*parent_class)
125 .close
126 .map(|f| {
127 if from_glib(f(self
128 .obj()
129 .unsafe_cast_ref::<AudioDecoder>()
130 .to_glib_none()
131 .0))
132 {
133 Ok(())
134 } else {
135 Err(gst::error_msg!(
136 gst::CoreError::StateChange,
137 ["Parent function `close` failed"]
138 ))
139 }
140 })
141 .unwrap_or(Ok(()))
142 }
143 }
144
145 fn parent_start(&self) -> Result<(), gst::ErrorMessage> {
146 unsafe {
147 let data = Self::type_data();
148 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
149 (*parent_class)
150 .start
151 .map(|f| {
152 if from_glib(f(self
153 .obj()
154 .unsafe_cast_ref::<AudioDecoder>()
155 .to_glib_none()
156 .0))
157 {
158 Ok(())
159 } else {
160 Err(gst::error_msg!(
161 gst::CoreError::StateChange,
162 ["Parent function `start` failed"]
163 ))
164 }
165 })
166 .unwrap_or(Ok(()))
167 }
168 }
169
170 fn parent_stop(&self) -> Result<(), gst::ErrorMessage> {
171 unsafe {
172 let data = Self::type_data();
173 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
174 (*parent_class)
175 .stop
176 .map(|f| {
177 if from_glib(f(self
178 .obj()
179 .unsafe_cast_ref::<AudioDecoder>()
180 .to_glib_none()
181 .0))
182 {
183 Ok(())
184 } else {
185 Err(gst::error_msg!(
186 gst::CoreError::StateChange,
187 ["Parent function `stop` failed"]
188 ))
189 }
190 })
191 .unwrap_or(Ok(()))
192 }
193 }
194
195 fn parent_set_format(&self, caps: &gst::Caps) -> Result<(), gst::LoggableError> {
196 unsafe {
197 let data = Self::type_data();
198 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
199 (*parent_class)
200 .set_format
201 .map(|f| {
202 gst::result_from_gboolean!(
203 f(
204 self.obj()
205 .unsafe_cast_ref::<AudioDecoder>()
206 .to_glib_none()
207 .0,
208 caps.to_glib_none().0
209 ),
210 gst::CAT_RUST,
211 "parent function `set_format` failed"
212 )
213 })
214 .unwrap_or(Ok(()))
215 }
216 }
217
218 fn parent_parse(&self, adapter: &gst_base::Adapter) -> Result<(u32, u32), gst::FlowError> {
219 unsafe {
220 let data = Self::type_data();
221 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
222 (*parent_class)
223 .parse
224 .map(|f| {
225 let mut offset = mem::MaybeUninit::uninit();
226 let mut len = mem::MaybeUninit::uninit();
227 gst::FlowSuccess::try_from_glib(f(
228 self.obj()
229 .unsafe_cast_ref::<AudioDecoder>()
230 .to_glib_none()
231 .0,
232 adapter.to_glib_none().0,
233 offset.as_mut_ptr(),
234 len.as_mut_ptr(),
235 ))
236 .map(|_| {
237 let offset = offset.assume_init();
238 let len = len.assume_init();
239 assert!(offset >= 0);
240 assert!(len >= 0);
241 (offset as u32, len as u32)
242 })
243 })
244 .unwrap_or_else(|| Ok((0, adapter.available() as u32)))
245 }
246 }
247
248 fn parent_handle_frame(
249 &self,
250 buffer: Option<&gst::Buffer>,
251 ) -> Result<gst::FlowSuccess, gst::FlowError> {
252 unsafe {
253 let data = Self::type_data();
254 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
255 (*parent_class)
256 .handle_frame
257 .map(|f| {
258 try_from_glib(f(
259 self.obj()
260 .unsafe_cast_ref::<AudioDecoder>()
261 .to_glib_none()
262 .0,
263 buffer
264 .map(|buffer| buffer.as_mut_ptr() as *mut *mut gst::ffi::GstBuffer)
265 .unwrap_or(ptr::null_mut()),
266 ))
267 })
268 .unwrap_or(Err(gst::FlowError::Error))
269 }
270 }
271
272 fn parent_pre_push(&self, buffer: gst::Buffer) -> Result<Option<gst::Buffer>, gst::FlowError> {
273 unsafe {
274 let data = Self::type_data();
275 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
276 if let Some(f) = (*parent_class).pre_push {
277 let mut buffer = buffer.into_glib_ptr();
278 gst::FlowSuccess::try_from_glib(f(
279 self.obj()
280 .unsafe_cast_ref::<AudioDecoder>()
281 .to_glib_none()
282 .0,
283 &mut buffer,
284 ))
285 .map(|_| from_glib_full(buffer))
286 } else {
287 Ok(Some(buffer))
288 }
289 }
290 }
291
292 fn parent_flush(&self, hard: bool) {
293 unsafe {
294 let data = Self::type_data();
295 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
296 (*parent_class)
297 .flush
298 .map(|f| {
299 f(
300 self.obj()
301 .unsafe_cast_ref::<AudioDecoder>()
302 .to_glib_none()
303 .0,
304 hard.into_glib(),
305 )
306 })
307 .unwrap_or(())
308 }
309 }
310
311 fn parent_negotiate(&self) -> Result<(), gst::LoggableError> {
312 unsafe {
313 let data = Self::type_data();
314 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
315 (*parent_class)
316 .negotiate
317 .map(|f| {
318 gst::result_from_gboolean!(
319 f(self
320 .obj()
321 .unsafe_cast_ref::<AudioDecoder>()
322 .to_glib_none()
323 .0),
324 gst::CAT_RUST,
325 "Parent function `negotiate` failed"
326 )
327 })
328 .unwrap_or(Ok(()))
329 }
330 }
331
332 fn parent_caps(&self, filter: Option<&gst::Caps>) -> gst::Caps {
333 unsafe {
334 let data = Self::type_data();
335 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
336 (*parent_class)
337 .getcaps
338 .map(|f| {
339 from_glib_full(f(
340 self.obj()
341 .unsafe_cast_ref::<AudioDecoder>()
342 .to_glib_none()
343 .0,
344 filter.to_glib_none().0,
345 ))
346 })
347 .unwrap_or_else(|| {
348 self.obj()
349 .unsafe_cast_ref::<AudioDecoder>()
350 .proxy_getcaps(None, filter)
351 })
352 }
353 }
354
355 fn parent_sink_event(&self, event: gst::Event) -> bool {
356 unsafe {
357 let data = Self::type_data();
358 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
359 let f = (*parent_class)
360 .sink_event
361 .expect("Missing parent function `sink_event`");
362 from_glib(f(
363 self.obj()
364 .unsafe_cast_ref::<AudioDecoder>()
365 .to_glib_none()
366 .0,
367 event.into_glib_ptr(),
368 ))
369 }
370 }
371
372 fn parent_sink_query(&self, query: &mut gst::QueryRef) -> bool {
373 unsafe {
374 let data = Self::type_data();
375 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
376 let f = (*parent_class)
377 .sink_query
378 .expect("Missing parent function `sink_query`");
379 from_glib(f(
380 self.obj()
381 .unsafe_cast_ref::<AudioDecoder>()
382 .to_glib_none()
383 .0,
384 query.as_mut_ptr(),
385 ))
386 }
387 }
388
389 fn parent_src_event(&self, event: gst::Event) -> bool {
390 unsafe {
391 let data = Self::type_data();
392 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
393 let f = (*parent_class)
394 .src_event
395 .expect("Missing parent function `src_event`");
396 from_glib(f(
397 self.obj()
398 .unsafe_cast_ref::<AudioDecoder>()
399 .to_glib_none()
400 .0,
401 event.into_glib_ptr(),
402 ))
403 }
404 }
405
406 fn parent_src_query(&self, query: &mut gst::QueryRef) -> bool {
407 unsafe {
408 let data = Self::type_data();
409 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
410 let f = (*parent_class)
411 .src_query
412 .expect("Missing parent function `src_query`");
413 from_glib(f(
414 self.obj()
415 .unsafe_cast_ref::<AudioDecoder>()
416 .to_glib_none()
417 .0,
418 query.as_mut_ptr(),
419 ))
420 }
421 }
422
423 fn parent_propose_allocation(
424 &self,
425 query: &mut gst::query::Allocation,
426 ) -> Result<(), gst::LoggableError> {
427 unsafe {
428 let data = Self::type_data();
429 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
430 (*parent_class)
431 .propose_allocation
432 .map(|f| {
433 gst::result_from_gboolean!(
434 f(
435 self.obj()
436 .unsafe_cast_ref::<AudioDecoder>()
437 .to_glib_none()
438 .0,
439 query.as_mut_ptr(),
440 ),
441 gst::CAT_RUST,
442 "Parent function `propose_allocation` failed",
443 )
444 })
445 .unwrap_or(Ok(()))
446 }
447 }
448
449 fn parent_decide_allocation(
450 &self,
451 query: &mut gst::query::Allocation,
452 ) -> Result<(), gst::LoggableError> {
453 unsafe {
454 let data = Self::type_data();
455 let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
456 (*parent_class)
457 .decide_allocation
458 .map(|f| {
459 gst::result_from_gboolean!(
460 f(
461 self.obj()
462 .unsafe_cast_ref::<AudioDecoder>()
463 .to_glib_none()
464 .0,
465 query.as_mut_ptr(),
466 ),
467 gst::CAT_RUST,
468 "Parent function `decide_allocation` failed",
469 )
470 })
471 .unwrap_or(Ok(()))
472 }
473 }
474}
475
476impl<T: AudioDecoderImpl> AudioDecoderImplExt for T {}
477
478unsafe impl<T: AudioDecoderImpl> IsSubclassable<T> for AudioDecoder {
479 fn class_init(klass: &mut glib::Class<Self>) {
480 Self::parent_class_init::<T>(klass);
481 let klass = klass.as_mut();
482 klass.open = Some(audio_decoder_open::<T>);
483 klass.close = Some(audio_decoder_close::<T>);
484 klass.start = Some(audio_decoder_start::<T>);
485 klass.stop = Some(audio_decoder_stop::<T>);
486 klass.set_format = Some(audio_decoder_set_format::<T>);
487 klass.parse = Some(audio_decoder_parse::<T>);
488 klass.handle_frame = Some(audio_decoder_handle_frame::<T>);
489 klass.pre_push = Some(audio_decoder_pre_push::<T>);
490 klass.flush = Some(audio_decoder_flush::<T>);
491 klass.negotiate = Some(audio_decoder_negotiate::<T>);
492 klass.getcaps = Some(audio_decoder_getcaps::<T>);
493 klass.sink_event = Some(audio_decoder_sink_event::<T>);
494 klass.src_event = Some(audio_decoder_src_event::<T>);
495 klass.sink_query = Some(audio_decoder_sink_query::<T>);
496 klass.src_query = Some(audio_decoder_src_query::<T>);
497 klass.propose_allocation = Some(audio_decoder_propose_allocation::<T>);
498 klass.decide_allocation = Some(audio_decoder_decide_allocation::<T>);
499 }
500}
501
502unsafe extern "C" fn audio_decoder_open<T: AudioDecoderImpl>(
503 ptr: *mut ffi::GstAudioDecoder,
504) -> glib::ffi::gboolean {
505 let instance = &*(ptr as *mut T::Instance);
506 let imp = instance.imp();
507
508 gst::panic_to_error!(imp, false, {
509 match imp.open() {
510 Ok(()) => true,
511 Err(err) => {
512 imp.post_error_message(err);
513 false
514 }
515 }
516 })
517 .into_glib()
518}
519
520unsafe extern "C" fn audio_decoder_close<T: AudioDecoderImpl>(
521 ptr: *mut ffi::GstAudioDecoder,
522) -> glib::ffi::gboolean {
523 let instance = &*(ptr as *mut T::Instance);
524 let imp = instance.imp();
525
526 gst::panic_to_error!(imp, false, {
527 match imp.close() {
528 Ok(()) => true,
529 Err(err) => {
530 imp.post_error_message(err);
531 false
532 }
533 }
534 })
535 .into_glib()
536}
537
538unsafe extern "C" fn audio_decoder_start<T: AudioDecoderImpl>(
539 ptr: *mut ffi::GstAudioDecoder,
540) -> glib::ffi::gboolean {
541 let instance = &*(ptr as *mut T::Instance);
542 let imp = instance.imp();
543
544 gst::panic_to_error!(imp, false, {
545 match imp.start() {
546 Ok(()) => true,
547 Err(err) => {
548 imp.post_error_message(err);
549 false
550 }
551 }
552 })
553 .into_glib()
554}
555
556unsafe extern "C" fn audio_decoder_stop<T: AudioDecoderImpl>(
557 ptr: *mut ffi::GstAudioDecoder,
558) -> glib::ffi::gboolean {
559 let instance = &*(ptr as *mut T::Instance);
560 let imp = instance.imp();
561
562 gst::panic_to_error!(imp, false, {
563 match imp.stop() {
564 Ok(()) => true,
565 Err(err) => {
566 imp.post_error_message(err);
567 false
568 }
569 }
570 })
571 .into_glib()
572}
573
574unsafe extern "C" fn audio_decoder_set_format<T: AudioDecoderImpl>(
575 ptr: *mut ffi::GstAudioDecoder,
576 caps: *mut gst::ffi::GstCaps,
577) -> glib::ffi::gboolean {
578 let instance = &*(ptr as *mut T::Instance);
579 let imp = instance.imp();
580
581 gst::panic_to_error!(imp, false, {
582 match imp.set_format(&from_glib_borrow(caps)) {
583 Ok(()) => true,
584 Err(err) => {
585 err.log_with_imp(imp);
586 false
587 }
588 }
589 })
590 .into_glib()
591}
592
593unsafe extern "C" fn audio_decoder_parse<T: AudioDecoderImpl>(
594 ptr: *mut ffi::GstAudioDecoder,
595 adapter: *mut gst_base::ffi::GstAdapter,
596 offset: *mut i32,
597 len: *mut i32,
598) -> gst::ffi::GstFlowReturn {
599 let instance = &*(ptr as *mut T::Instance);
600 let imp = instance.imp();
601
602 gst::panic_to_error!(imp, gst::FlowReturn::Error, {
603 match imp.parse(&from_glib_borrow(adapter)) {
604 Ok((new_offset, new_len)) => {
605 assert!(new_offset <= i32::MAX as u32);
606 assert!(new_len <= i32::MAX as u32);
607 *offset = new_offset as i32;
608 *len = new_len as i32;
609 Ok(gst::FlowSuccess::Ok)
610 }
611 Err(err) => Err(err),
612 }
613 .into()
614 })
615 .into_glib()
616}
617
618unsafe extern "C" fn audio_decoder_handle_frame<T: AudioDecoderImpl>(
619 ptr: *mut ffi::GstAudioDecoder,
620 buffer: *mut *mut gst::ffi::GstBuffer,
621) -> gst::ffi::GstFlowReturn {
622 let buffer = buffer as *mut gst::ffi::GstBuffer;
624 let instance = &*(ptr as *mut T::Instance);
625 let imp = instance.imp();
626
627 gst::panic_to_error!(imp, gst::FlowReturn::Error, {
628 imp.handle_frame(Option::<gst::Buffer>::from_glib_none(buffer).as_ref())
629 .into()
630 })
631 .into_glib()
632}
633
634unsafe extern "C" fn audio_decoder_pre_push<T: AudioDecoderImpl>(
635 ptr: *mut ffi::GstAudioDecoder,
636 buffer: *mut *mut gst::ffi::GstBuffer,
637) -> gst::ffi::GstFlowReturn {
638 let instance = &*(ptr as *mut T::Instance);
639 let imp = instance.imp();
640
641 gst::panic_to_error!(imp, gst::FlowReturn::Error, {
642 match imp.pre_push(from_glib_full(*buffer)) {
643 Ok(Some(new_buffer)) => {
644 *buffer = new_buffer.into_glib_ptr();
645 Ok(gst::FlowSuccess::Ok)
646 }
647 Ok(None) => {
648 *buffer = ptr::null_mut();
649 Ok(gst::FlowSuccess::Ok)
650 }
651 Err(err) => Err(err),
652 }
653 .into()
654 })
655 .into_glib()
656}
657
658unsafe extern "C" fn audio_decoder_flush<T: AudioDecoderImpl>(
659 ptr: *mut ffi::GstAudioDecoder,
660 hard: glib::ffi::gboolean,
661) {
662 let instance = &*(ptr as *mut T::Instance);
663 let imp = instance.imp();
664
665 gst::panic_to_error!(imp, (), { AudioDecoderImpl::flush(imp, from_glib(hard)) })
666}
667
668unsafe extern "C" fn audio_decoder_negotiate<T: AudioDecoderImpl>(
669 ptr: *mut ffi::GstAudioDecoder,
670) -> glib::ffi::gboolean {
671 let instance = &*(ptr as *mut T::Instance);
672 let imp = instance.imp();
673
674 gst::panic_to_error!(imp, false, {
675 match imp.negotiate() {
676 Ok(()) => true,
677 Err(err) => {
678 err.log_with_imp(imp);
679 false
680 }
681 }
682 })
683 .into_glib()
684}
685
686unsafe extern "C" fn audio_decoder_getcaps<T: AudioDecoderImpl>(
687 ptr: *mut ffi::GstAudioDecoder,
688 filter: *mut gst::ffi::GstCaps,
689) -> *mut gst::ffi::GstCaps {
690 let instance = &*(ptr as *mut T::Instance);
691 let imp = instance.imp();
692
693 gst::panic_to_error!(imp, gst::Caps::new_empty(), {
694 AudioDecoderImpl::caps(
695 imp,
696 Option::<gst::Caps>::from_glib_borrow(filter)
697 .as_ref()
698 .as_ref(),
699 )
700 })
701 .into_glib_ptr()
702}
703
704unsafe extern "C" fn audio_decoder_sink_event<T: AudioDecoderImpl>(
705 ptr: *mut ffi::GstAudioDecoder,
706 event: *mut gst::ffi::GstEvent,
707) -> glib::ffi::gboolean {
708 let instance = &*(ptr as *mut T::Instance);
709 let imp = instance.imp();
710
711 gst::panic_to_error!(imp, false, { imp.sink_event(from_glib_full(event)) }).into_glib()
712}
713
714unsafe extern "C" fn audio_decoder_sink_query<T: AudioDecoderImpl>(
715 ptr: *mut ffi::GstAudioDecoder,
716 query: *mut gst::ffi::GstQuery,
717) -> glib::ffi::gboolean {
718 let instance = &*(ptr as *mut T::Instance);
719 let imp = instance.imp();
720
721 gst::panic_to_error!(imp, false, {
722 imp.sink_query(gst::QueryRef::from_mut_ptr(query))
723 })
724 .into_glib()
725}
726
727unsafe extern "C" fn audio_decoder_src_event<T: AudioDecoderImpl>(
728 ptr: *mut ffi::GstAudioDecoder,
729 event: *mut gst::ffi::GstEvent,
730) -> glib::ffi::gboolean {
731 let instance = &*(ptr as *mut T::Instance);
732 let imp = instance.imp();
733
734 gst::panic_to_error!(imp, false, { imp.src_event(from_glib_full(event)) }).into_glib()
735}
736
737unsafe extern "C" fn audio_decoder_src_query<T: AudioDecoderImpl>(
738 ptr: *mut ffi::GstAudioDecoder,
739 query: *mut gst::ffi::GstQuery,
740) -> glib::ffi::gboolean {
741 let instance = &*(ptr as *mut T::Instance);
742 let imp = instance.imp();
743
744 gst::panic_to_error!(imp, false, {
745 imp.src_query(gst::QueryRef::from_mut_ptr(query))
746 })
747 .into_glib()
748}
749
750unsafe extern "C" fn audio_decoder_propose_allocation<T: AudioDecoderImpl>(
751 ptr: *mut ffi::GstAudioDecoder,
752 query: *mut gst::ffi::GstQuery,
753) -> glib::ffi::gboolean {
754 let instance = &*(ptr as *mut T::Instance);
755 let imp = instance.imp();
756 let query = match gst::QueryRef::from_mut_ptr(query).view_mut() {
757 gst::QueryViewMut::Allocation(allocation) => allocation,
758 _ => unreachable!(),
759 };
760
761 gst::panic_to_error!(imp, false, {
762 match imp.propose_allocation(query) {
763 Ok(()) => true,
764 Err(err) => {
765 err.log_with_imp(imp);
766 false
767 }
768 }
769 })
770 .into_glib()
771}
772
773unsafe extern "C" fn audio_decoder_decide_allocation<T: AudioDecoderImpl>(
774 ptr: *mut ffi::GstAudioDecoder,
775 query: *mut gst::ffi::GstQuery,
776) -> glib::ffi::gboolean {
777 let instance = &*(ptr as *mut T::Instance);
778 let imp = instance.imp();
779 let query = match gst::QueryRef::from_mut_ptr(query).view_mut() {
780 gst::QueryViewMut::Allocation(allocation) => allocation,
781 _ => unreachable!(),
782 };
783
784 gst::panic_to_error!(imp, false, {
785 match imp.decide_allocation(query) {
786 Ok(()) => true,
787 Err(err) => {
788 err.log_with_imp(imp);
789 false
790 }
791 }
792 })
793 .into_glib()
794}