mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-09-24 13:00:27 +00:00
90b8ee2022
It's doing the same thing and is shorter.
199 lines
6.2 KiB
Rust
199 lines
6.2 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 super::prelude::*;
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use glib::subclass::prelude::*;
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use crate::Bin;
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use crate::Element;
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use crate::LoggableError;
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use crate::Message;
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pub trait BinImpl: BinImplExt + ElementImpl {
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fn add_element(&self, element: &Element) -> Result<(), LoggableError> {
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self.parent_add_element(element)
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}
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fn remove_element(&self, element: &Element) -> Result<(), LoggableError> {
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self.parent_remove_element(element)
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}
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fn do_latency(&self) -> Result<(), LoggableError> {
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self.parent_do_latency()
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}
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fn handle_message(&self, message: Message) {
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self.parent_handle_message(message)
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}
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}
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pub trait BinImplExt: ObjectSubclass {
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fn parent_add_element(&self, element: &Element) -> Result<(), LoggableError>;
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fn parent_remove_element(&self, element: &Element) -> Result<(), LoggableError>;
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fn parent_do_latency(&self) -> Result<(), LoggableError>;
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fn parent_handle_message(&self, message: Message);
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}
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impl<T: BinImpl> BinImplExt for T {
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fn parent_add_element(&self, element: &Element) -> Result<(), LoggableError> {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstBinClass;
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let f = (*parent_class).add_element.ok_or_else(|| {
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loggable_error!(
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crate::CAT_RUST,
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"Parent function `add_element` is not defined"
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)
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})?;
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result_from_gboolean!(
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f(
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self.obj().unsafe_cast_ref::<crate::Bin>().to_glib_none().0,
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element.to_glib_none().0
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),
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crate::CAT_RUST,
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"Failed to add the element using the parent function"
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)
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}
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}
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fn parent_remove_element(&self, element: &Element) -> Result<(), LoggableError> {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstBinClass;
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let f = (*parent_class).remove_element.ok_or_else(|| {
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loggable_error!(
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crate::CAT_RUST,
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"Parent function `remove_element` is not defined"
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)
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})?;
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result_from_gboolean!(
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f(
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self.obj().unsafe_cast_ref::<crate::Bin>().to_glib_none().0,
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element.to_glib_none().0
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),
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crate::CAT_RUST,
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"Failed to remove the element using the parent function"
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)
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}
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}
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fn parent_do_latency(&self) -> Result<(), LoggableError> {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstBinClass;
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let f = (*parent_class).do_latency.ok_or_else(|| {
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loggable_error!(
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crate::CAT_RUST,
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"Parent function `do_latency` is not defined"
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)
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})?;
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result_from_gboolean!(
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f(self.obj().unsafe_cast_ref::<crate::Bin>().to_glib_none().0,),
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crate::CAT_RUST,
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"Failed to update latency using the parent function"
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)
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}
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}
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fn parent_handle_message(&self, message: Message) {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstBinClass;
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if let Some(ref f) = (*parent_class).handle_message {
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f(
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self.obj().unsafe_cast_ref::<crate::Bin>().to_glib_none().0,
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message.into_glib_ptr(),
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);
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}
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}
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}
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}
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unsafe impl<T: BinImpl> IsSubclassable<T> for Bin {
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fn class_init(klass: &mut glib::Class<Self>) {
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Self::parent_class_init::<T>(klass);
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let klass = klass.as_mut();
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klass.add_element = Some(bin_add_element::<T>);
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klass.remove_element = Some(bin_remove_element::<T>);
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klass.do_latency = Some(bin_do_latency::<T>);
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klass.handle_message = Some(bin_handle_message::<T>);
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}
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}
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unsafe extern "C" fn bin_add_element<T: BinImpl>(
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ptr: *mut ffi::GstBin,
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element: *mut ffi::GstElement,
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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.imp();
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panic_to_error!(imp, false, {
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match imp.add_element(&from_glib_none(element)) {
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Ok(()) => true,
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Err(err) => {
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err.log_with_imp(imp);
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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 bin_remove_element<T: BinImpl>(
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ptr: *mut ffi::GstBin,
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element: *mut ffi::GstElement,
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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.imp();
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// If we get a floating reference passed simply return FALSE here. It can't be
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// stored inside this bin, and if we continued to use it we would take ownership
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// of this floating reference.
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if glib::gobject_ffi::g_object_is_floating(element as *mut glib::gobject_ffi::GObject)
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!= glib::ffi::GFALSE
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{
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return glib::ffi::GFALSE;
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}
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panic_to_error!(imp, false, {
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match imp.remove_element(&from_glib_none(element)) {
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Ok(()) => true,
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Err(err) => {
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err.log_with_imp(imp);
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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 bin_do_latency<T: BinImpl>(ptr: *mut ffi::GstBin) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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panic_to_error!(imp, false, {
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match imp.do_latency() {
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Ok(()) => true,
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Err(err) => {
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err.log_with_imp(imp);
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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 bin_handle_message<T: BinImpl>(
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ptr: *mut ffi::GstBin,
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message: *mut ffi::GstMessage,
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) {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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panic_to_error!(imp, (), { imp.handle_message(from_glib_full(message)) });
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}
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