mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-10-02 16:52:23 +00:00
f89e840d27
When importing the prelude of a crate like `gst` the `glib` prelude is provided too. Shedding these imports saves quite a few lines and adheres to keeping it simple; we're not reexporting base/parent preludes for no reason :)
315 lines
10 KiB
Rust
315 lines
10 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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use glib::prelude::*;
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use glib::translate::*;
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use gst::LoggableError;
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use gst_base::subclass::prelude::*;
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use crate::AudioRingBufferSpec;
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use crate::AudioSink;
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pub trait AudioSinkImpl: AudioSinkImplExt + BaseSinkImpl {
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fn close(&self, sink: &Self::Type) -> Result<(), LoggableError> {
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self.parent_close(sink)
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}
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fn delay(&self, sink: &Self::Type) -> u32 {
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self.parent_delay(sink)
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}
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fn open(&self, sink: &Self::Type) -> Result<(), LoggableError> {
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self.parent_open(sink)
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}
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fn prepare(
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&self,
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sink: &Self::Type,
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spec: &mut AudioRingBufferSpec,
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) -> Result<(), LoggableError> {
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AudioSinkImplExt::parent_prepare(self, sink, spec)
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}
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fn unprepare(&self, sink: &Self::Type) -> Result<(), LoggableError> {
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self.parent_unprepare(sink)
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}
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fn write(&self, sink: &Self::Type, audio_data: &[u8]) -> Result<i32, LoggableError> {
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self.parent_write(sink, audio_data)
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}
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fn reset(&self, sink: &Self::Type) {
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self.parent_reset(sink)
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}
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}
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pub trait AudioSinkImplExt: ObjectSubclass {
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fn parent_close(&self, sink: &Self::Type) -> Result<(), LoggableError>;
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fn parent_delay(&self, sink: &Self::Type) -> u32;
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fn parent_open(&self, sink: &Self::Type) -> Result<(), LoggableError>;
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fn parent_prepare(
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&self,
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sink: &Self::Type,
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spec: &mut AudioRingBufferSpec,
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) -> Result<(), LoggableError>;
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fn parent_unprepare(&self, sink: &Self::Type) -> Result<(), LoggableError>;
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fn parent_write(&self, sink: &Self::Type, audio_data: &[u8]) -> Result<i32, LoggableError>;
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fn parent_reset(&self, sink: &Self::Type);
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}
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impl<T: AudioSinkImpl> AudioSinkImplExt for T {
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fn parent_close(&self, sink: &Self::Type) -> Result<(), LoggableError> {
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unsafe {
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let data = T::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioSinkClass;
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let f = match (*parent_class).close {
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None => return Ok(()),
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Some(f) => f,
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};
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gst::result_from_gboolean!(
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f(sink.unsafe_cast_ref::<AudioSink>().to_glib_none().0),
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gst::CAT_RUST,
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"Failed to close element using the parent function"
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)
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}
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}
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fn parent_delay(&self, sink: &Self::Type) -> u32 {
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unsafe {
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let data = T::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioSinkClass;
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let f = match (*parent_class).delay {
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Some(f) => f,
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None => return 0,
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};
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f(sink.unsafe_cast_ref::<AudioSink>().to_glib_none().0)
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}
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}
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fn parent_open(&self, sink: &Self::Type) -> Result<(), LoggableError> {
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unsafe {
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let data = T::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioSinkClass;
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let f = match (*parent_class).open {
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Some(f) => f,
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None => return Ok(()),
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};
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gst::result_from_gboolean!(
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f(sink.unsafe_cast_ref::<AudioSink>().to_glib_none().0),
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gst::CAT_RUST,
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"Failed to open element using the parent function"
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)
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}
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}
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fn parent_prepare(
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&self,
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sink: &Self::Type,
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spec: &mut AudioRingBufferSpec,
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) -> Result<(), LoggableError> {
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unsafe {
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let data = T::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioSinkClass;
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let f = match (*parent_class).prepare {
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Some(f) => f,
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None => return Ok(()),
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};
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gst::result_from_gboolean!(
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f(
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sink.unsafe_cast_ref::<AudioSink>().to_glib_none().0,
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&mut spec.0
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),
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gst::CAT_RUST,
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"Failed to prepare element using the parent function"
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)
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}
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}
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fn parent_unprepare(&self, sink: &Self::Type) -> Result<(), LoggableError> {
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unsafe {
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let data = T::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioSinkClass;
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let f = match (*parent_class).unprepare {
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Some(f) => f,
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None => {
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return Err(gst::loggable_error!(
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gst::CAT_RUST,
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"Unprepare is not implemented!"
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))
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}
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};
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gst::result_from_gboolean!(
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f(sink.unsafe_cast_ref::<AudioSink>().to_glib_none().0),
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gst::CAT_RUST,
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"Failed to unprepare element using the parent function"
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)
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}
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}
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fn parent_write(&self, sink: &Self::Type, buffer: &[u8]) -> Result<i32, LoggableError> {
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unsafe {
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let data = T::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioSinkClass;
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let f = match (*parent_class).write {
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Some(f) => f,
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None => return Ok(-1),
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};
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let buffer_ptr = buffer.as_ptr() as *const _ as *mut _;
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let ret = f(
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sink.unsafe_cast_ref::<AudioSink>().to_glib_none().0,
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buffer_ptr,
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buffer.len() as u32,
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);
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if ret > 0 {
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Ok(ret)
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} else {
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Err(gst::loggable_error!(
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gst::CAT_RUST,
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"Failed to write using the parent function"
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))
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}
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}
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}
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fn parent_reset(&self, sink: &Self::Type) {
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unsafe {
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let data = T::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioSinkClass;
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if let Some(f) = (*parent_class).reset {
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f(sink.unsafe_cast_ref::<AudioSink>().to_glib_none().0)
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}
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}
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}
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}
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unsafe impl<T: AudioSinkImpl> IsSubclassable<T> for AudioSink {
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fn class_init(klass: &mut glib::Class<Self>) {
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<gst_base::BaseSink as IsSubclassable<T>>::class_init(klass);
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let klass = klass.as_mut();
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klass.close = Some(audiosink_close::<T>);
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klass.delay = Some(audiosink_delay::<T>);
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klass.open = Some(audiosink_open::<T>);
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klass.prepare = Some(audiosink_prepare::<T>);
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klass.unprepare = Some(audiosink_unprepare::<T>);
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klass.write = Some(audiosink_write::<T>);
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klass.reset = Some(audiosink_reset::<T>);
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}
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fn instance_init(instance: &mut glib::subclass::InitializingObject<T>) {
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<gst_base::BaseSink as IsSubclassable<T>>::instance_init(instance);
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}
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}
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unsafe extern "C" fn audiosink_close<T: AudioSinkImpl>(
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ptr: *mut ffi::GstAudioSink,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.impl_();
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let wrap: Borrowed<AudioSink> = from_glib_borrow(ptr);
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gst::panic_to_error!(&wrap, &imp.panicked(), false, {
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match imp.close(wrap.unsafe_cast_ref()) {
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Ok(()) => true,
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Err(err) => {
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err.log_with_object(&*wrap);
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false
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}
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}
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})
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.into_glib()
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}
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unsafe extern "C" fn audiosink_delay<T: AudioSinkImpl>(ptr: *mut ffi::GstAudioSink) -> u32 {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.impl_();
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let wrap: Borrowed<AudioSink> = from_glib_borrow(ptr);
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gst::panic_to_error!(&wrap, &imp.panicked(), 0, {
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imp.delay(wrap.unsafe_cast_ref())
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})
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}
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unsafe extern "C" fn audiosink_open<T: AudioSinkImpl>(
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ptr: *mut ffi::GstAudioSink,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.impl_();
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let wrap: Borrowed<AudioSink> = from_glib_borrow(ptr);
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gst::panic_to_error!(&wrap, &imp.panicked(), false, {
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match imp.open(wrap.unsafe_cast_ref()) {
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Ok(()) => true,
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Err(err) => {
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err.log_with_object(&*wrap);
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false
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}
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}
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})
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.into_glib()
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}
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unsafe extern "C" fn audiosink_prepare<T: AudioSinkImpl>(
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ptr: *mut ffi::GstAudioSink,
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spec: *mut ffi::GstAudioRingBufferSpec,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.impl_();
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let wrap: Borrowed<AudioSink> = from_glib_borrow(ptr);
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let spec = &mut *(spec as *mut AudioRingBufferSpec);
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gst::panic_to_error!(&wrap, &imp.panicked(), false, {
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match AudioSinkImpl::prepare(imp, wrap.unsafe_cast_ref(), spec) {
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Ok(()) => true,
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Err(err) => {
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err.log_with_object(&*wrap);
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false
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}
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}
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})
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.into_glib()
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}
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unsafe extern "C" fn audiosink_unprepare<T: AudioSinkImpl>(
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ptr: *mut ffi::GstAudioSink,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.impl_();
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let wrap: Borrowed<AudioSink> = from_glib_borrow(ptr);
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gst::panic_to_error!(&wrap, &imp.panicked(), false, {
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match imp.unprepare(wrap.unsafe_cast_ref()) {
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Ok(()) => true,
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Err(err) => {
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err.log_with_object(&*wrap);
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false
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}
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}
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})
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.into_glib()
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}
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unsafe extern "C" fn audiosink_write<T: AudioSinkImpl>(
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ptr: *mut ffi::GstAudioSink,
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data: glib::ffi::gpointer,
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length: u32,
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) -> i32 {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.impl_();
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let wrap: Borrowed<AudioSink> = from_glib_borrow(ptr);
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let data_slice = std::slice::from_raw_parts(data as *const u8, length as usize);
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gst::panic_to_error!(&wrap, &imp.panicked(), -1, {
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imp.write(wrap.unsafe_cast_ref(), data_slice).unwrap_or(-1)
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})
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}
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unsafe extern "C" fn audiosink_reset<T: AudioSinkImpl>(ptr: *mut ffi::GstAudioSink) {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.impl_();
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let wrap: Borrowed<AudioSink> = from_glib_borrow(ptr);
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gst::panic_to_error!(&wrap, &imp.panicked(), (), {
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imp.reset(wrap.unsafe_cast_ref());
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});
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}
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