mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-05-31 22:58:11 +00:00
673 lines
20 KiB
Rust
673 lines
20 KiB
Rust
// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use std::mem;
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use std::ptr;
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use glib_ffi;
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use gobject_ffi;
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use gst_base_ffi;
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use gst_ffi;
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use glib;
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use glib::translate::*;
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use gst;
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use gst::prelude::*;
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use gst_base;
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use gobject_subclass::anyimpl::*;
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use gobject_subclass::object::*;
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use element::*;
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use object::*;
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pub trait BaseSrcImpl<T: BaseSrcBase>:
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AnyImpl + ObjectImpl<T> + ElementImpl<T> + Send + Sync + 'static
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where
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T::InstanceStructType: PanicPoison,
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{
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fn start(&self, _element: &T) -> bool {
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true
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}
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fn stop(&self, _element: &T) -> bool {
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true
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}
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fn is_seekable(&self, _element: &T) -> bool {
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false
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}
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fn get_size(&self, _element: &T) -> Option<u64> {
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None
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}
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fn fill(
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&self,
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_element: &T,
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_offset: u64,
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_length: u32,
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_buffer: &mut gst::BufferRef,
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) -> gst::FlowReturn {
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unimplemented!()
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}
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fn create(
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&self,
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element: &T,
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offset: u64,
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length: u32,
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) -> Result<gst::Buffer, gst::FlowError> {
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element.parent_create(offset, length)
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}
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fn do_seek(&self, element: &T, segment: &mut gst::Segment) -> bool {
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element.parent_do_seek(segment)
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}
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fn query(&self, element: &T, query: &mut gst::QueryRef) -> bool {
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element.parent_query(query)
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}
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fn event(&self, element: &T, event: &gst::Event) -> bool {
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element.parent_event(event)
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}
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fn get_caps(&self, element: &T, filter: Option<&gst::CapsRef>) -> Option<gst::Caps> {
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element.parent_get_caps(filter)
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}
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fn negotiate(&self, element: &T) -> bool {
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element.parent_negotiate()
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}
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fn set_caps(&self, element: &T, caps: &gst::CapsRef) -> bool {
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element.parent_set_caps(caps)
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}
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fn fixate(&self, element: &T, caps: gst::Caps) -> gst::Caps {
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element.parent_fixate(caps)
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}
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fn unlock(&self, _element: &T) -> bool {
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true
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}
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fn unlock_stop(&self, _element: &T) -> bool {
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true
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}
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}
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any_impl!(BaseSrcBase, BaseSrcImpl, PanicPoison);
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pub unsafe trait BaseSrcBase:
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IsA<gst::Element> + IsA<gst_base::BaseSrc> + ObjectType
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{
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fn parent_create(&self, offset: u64, length: u32) -> Result<gst::Buffer, gst::FlowError> {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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(*parent_klass)
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.create
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.map(|f| {
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let mut buffer: *mut gst_ffi::GstBuffer = ptr::null_mut();
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// FIXME: Wrong signature in -sys bindings
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// https://gitlab.freedesktop.org/gstreamer/gstreamer-rs-sys/issues/3
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let buffer_ref = &mut buffer as *mut _ as *mut gst_ffi::GstBuffer;
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let ret: gst::FlowReturn = from_glib(f(self.to_glib_none().0, offset, length, buffer_ref));
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ret.into_result_value(|| from_glib_full(buffer))
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})
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.unwrap_or(Err(gst::FlowError::Error))
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}
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}
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fn parent_do_seek(&self, segment: &mut gst::Segment) -> bool {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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(*parent_klass)
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.do_seek
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.map(|f| from_glib(f(self.to_glib_none().0, segment.to_glib_none_mut().0)))
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.unwrap_or(false)
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}
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}
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fn parent_query(&self, query: &mut gst::QueryRef) -> bool {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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(*parent_klass)
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.query
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.map(|f| from_glib(f(self.to_glib_none().0, query.as_mut_ptr())))
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.unwrap_or(false)
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}
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}
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fn parent_event(&self, event: &gst::Event) -> bool {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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(*parent_klass)
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.event
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.map(|f| from_glib(f(self.to_glib_none().0, event.to_glib_none().0)))
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.unwrap_or(false)
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}
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}
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fn parent_get_caps(&self, filter: Option<&gst::CapsRef>) -> Option<gst::Caps> {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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let filter_ptr = if let Some(filter) = filter {
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filter.as_mut_ptr()
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} else {
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ptr::null_mut()
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};
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(*parent_klass)
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.get_caps
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.map(|f| from_glib_full(f(self.to_glib_none().0, filter_ptr)))
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.unwrap_or(None)
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}
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}
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fn parent_negotiate(&self) -> bool {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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(*parent_klass)
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.negotiate
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.map(|f| from_glib(f(self.to_glib_none().0)))
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.unwrap_or(false)
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}
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}
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fn parent_set_caps(&self, caps: &gst::CapsRef) -> bool {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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(*parent_klass)
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.set_caps
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.map(|f| from_glib(f(self.to_glib_none().0, caps.as_mut_ptr())))
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.unwrap_or(true)
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}
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}
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fn parent_fixate(&self, caps: gst::Caps) -> gst::Caps {
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unsafe {
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let klass = self.get_class();
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let parent_klass = (*klass).get_parent_class() as *const gst_base_ffi::GstBaseSrcClass;
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match (*parent_klass).fixate {
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Some(fixate) => from_glib_full(fixate(self.to_glib_none().0, caps.into_ptr())),
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None => caps,
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}
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}
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}
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}
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pub unsafe trait BaseSrcClassExt<T: BaseSrcBase>
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where
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T::ImplType: BaseSrcImpl<T>,
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T::InstanceStructType: PanicPoison,
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{
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fn override_vfuncs(&mut self, _: &ClassInitToken) {
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unsafe {
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let klass = &mut *(self as *const Self as *mut gst_base_ffi::GstBaseSrcClass);
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klass.start = Some(base_src_start::<T>);
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klass.stop = Some(base_src_stop::<T>);
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klass.is_seekable = Some(base_src_is_seekable::<T>);
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klass.get_size = Some(base_src_get_size::<T>);
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klass.fill = Some(base_src_fill::<T>);
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klass.create = Some(base_src_create::<T>);
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klass.do_seek = Some(base_src_do_seek::<T>);
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klass.query = Some(base_src_query::<T>);
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klass.event = Some(base_src_event::<T>);
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klass.get_caps = Some(base_src_get_caps::<T>);
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klass.negotiate = Some(base_src_negotiate::<T>);
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klass.set_caps = Some(base_src_set_caps::<T>);
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klass.fixate = Some(base_src_fixate::<T>);
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klass.unlock = Some(base_src_unlock::<T>);
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klass.unlock_stop = Some(base_src_unlock_stop::<T>);
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}
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}
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}
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glib_wrapper! {
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pub struct BaseSrc(Object<ElementInstanceStruct<BaseSrc>>):
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[gst_base::BaseSrc => gst_base_ffi::GstBaseSrc,
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gst::Element => gst_ffi::GstElement,
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gst::Object => gst_ffi::GstObject];
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match fn {
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get_type => || get_type::<BaseSrc>(),
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}
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}
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unsafe impl<T: IsA<gst::Element> + IsA<gst_base::BaseSrc> + ObjectType> BaseSrcBase for T {}
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pub type BaseSrcClass = ClassStruct<BaseSrc>;
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// FIXME: Boilerplate
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unsafe impl BaseSrcClassExt<BaseSrc> for BaseSrcClass {}
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unsafe impl ElementClassExt<BaseSrc> for BaseSrcClass {}
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unsafe impl ObjectClassExt<BaseSrc> for BaseSrcClass {}
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unsafe impl Send for BaseSrc {}
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unsafe impl Sync for BaseSrc {}
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#[macro_export]
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macro_rules! box_base_src_impl(
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($name:ident) => {
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box_element_impl!($name);
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impl<T: BaseSrcBase> BaseSrcImpl<T> for Box<$name<T>>
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where
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T::InstanceStructType: PanicPoison
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{
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fn start(&self, element: &T) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.start(element)
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}
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fn stop(&self, element: &T) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.stop(element)
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}
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fn is_seekable(&self, element: &T) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.is_seekable(element)
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}
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fn get_size(&self, element: &T) -> Option<u64> {
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let imp: &$name<T> = self.as_ref();
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imp.get_size(element)
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}
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fn fill(
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&self,
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element: &T,
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offset: u64,
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length: u32,
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buffer: &mut gst::BufferRef,
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) -> gst::FlowReturn {
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let imp: &$name<T> = self.as_ref();
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imp.fill(element, offset, length, buffer)
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}
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fn create(
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&self,
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element: &T,
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offset: u64,
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length: u32,
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) -> Result<gst::Buffer, gst::FlowError> {
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let imp: &$name<T> = self.as_ref();
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imp.create(element, offset, length)
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}
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fn do_seek(&self, element: &T, segment: &mut gst::Segment) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.do_seek(element, segment)
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}
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fn query(&self, element: &T, query: &mut gst::QueryRef) -> bool {
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let imp: &$name<T> = self.as_ref();
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BaseSrcImpl::query(imp, element, query)
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}
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fn event(&self, element: &T, event: &gst::Event) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.event(element, event)
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}
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fn get_caps(&self, element: &T, filter: Option<&gst::CapsRef>) -> Option<gst::Caps> {
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let imp: &$name<T> = self.as_ref();
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imp.get_caps(element, filter)
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}
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fn negotiate(&self, element: &T) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.negotiate(element)
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}
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fn set_caps(&self, element: &T, caps: &gst::CapsRef) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.set_caps(element, caps)
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}
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fn fixate(&self, element: &T, caps: gst::Caps) -> gst::Caps {
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let imp: &$name<T> = self.as_ref();
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imp.fixate(element, caps)
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}
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fn unlock(&self, element: &T) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.unlock(element)
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}
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fn unlock_stop(&self, element: &T) -> bool {
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let imp: &$name<T> = self.as_ref();
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imp.unlock_stop(element)
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}
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}
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};
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);
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box_base_src_impl!(BaseSrcImpl);
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impl ObjectType for BaseSrc {
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const NAME: &'static str = "RsBaseSrc";
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type ParentType = gst_base::BaseSrc;
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type ImplType = Box<BaseSrcImpl<Self>>;
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type InstanceStructType = ElementInstanceStruct<Self>;
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fn class_init(token: &ClassInitToken, klass: &mut BaseSrcClass) {
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ObjectClassExt::override_vfuncs(klass, token);
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ElementClassExt::override_vfuncs(klass, token);
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BaseSrcClassExt::override_vfuncs(klass, token);
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}
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object_type_fns!();
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}
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unsafe extern "C" fn base_src_start<T: BaseSrcBase>(
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ptr: *mut gst_base_ffi::GstBaseSrc,
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) -> glib_ffi::gboolean
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where
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T::ImplType: BaseSrcImpl<T>,
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T::InstanceStructType: PanicPoison,
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{
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floating_reference_guard!(ptr);
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let element = &*(ptr as *mut T::InstanceStructType);
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let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
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let imp = element.get_impl();
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panic_to_error!(&wrap, &element.panicked(), false, { imp.start(&wrap) }).to_glib()
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}
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unsafe extern "C" fn base_src_stop<T: BaseSrcBase>(
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ptr: *mut gst_base_ffi::GstBaseSrc,
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) -> glib_ffi::gboolean
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where
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T::ImplType: BaseSrcImpl<T>,
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T::InstanceStructType: PanicPoison,
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{
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floating_reference_guard!(ptr);
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let element = &*(ptr as *mut T::InstanceStructType);
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let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
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let imp = element.get_impl();
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panic_to_error!(&wrap, &element.panicked(), false, { imp.stop(&wrap) }).to_glib()
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}
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unsafe extern "C" fn base_src_is_seekable<T: BaseSrcBase>(
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ptr: *mut gst_base_ffi::GstBaseSrc,
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) -> glib_ffi::gboolean
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where
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T::ImplType: BaseSrcImpl<T>,
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T::InstanceStructType: PanicPoison,
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{
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floating_reference_guard!(ptr);
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let element = &*(ptr as *mut T::InstanceStructType);
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let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
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let imp = element.get_impl();
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panic_to_error!(&wrap, &element.panicked(), false, {
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imp.is_seekable(&wrap)
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})
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.to_glib()
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}
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unsafe extern "C" fn base_src_get_size<T: BaseSrcBase>(
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ptr: *mut gst_base_ffi::GstBaseSrc,
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size: *mut u64,
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) -> glib_ffi::gboolean
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where
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T::ImplType: BaseSrcImpl<T>,
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T::InstanceStructType: PanicPoison,
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{
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floating_reference_guard!(ptr);
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let element = &*(ptr as *mut T::InstanceStructType);
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let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
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let imp = element.get_impl();
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panic_to_error!(&wrap, &element.panicked(), false, {
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match imp.get_size(&wrap) {
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Some(s) => {
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*size = s;
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true
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}
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None => false,
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}
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})
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.to_glib()
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}
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unsafe extern "C" fn base_src_fill<T: BaseSrcBase>(
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ptr: *mut gst_base_ffi::GstBaseSrc,
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offset: u64,
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length: u32,
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buffer: *mut gst_ffi::GstBuffer,
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) -> gst_ffi::GstFlowReturn
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where
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T::ImplType: BaseSrcImpl<T>,
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T::InstanceStructType: PanicPoison,
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{
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floating_reference_guard!(ptr);
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let element = &*(ptr as *mut T::InstanceStructType);
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let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
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let imp = element.get_impl();
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let buffer = gst::BufferRef::from_mut_ptr(buffer);
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panic_to_error!(&wrap, &element.panicked(), gst::FlowReturn::Error, {
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imp.fill(&wrap, offset, length, buffer)
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})
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.to_glib()
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}
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unsafe extern "C" fn base_src_create<T: BaseSrcBase>(
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ptr: *mut gst_base_ffi::GstBaseSrc,
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offset: u64,
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length: u32,
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buffer_ptr: *mut gst_ffi::GstBuffer,
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) -> gst_ffi::GstFlowReturn
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where
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T::ImplType: BaseSrcImpl<T>,
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T::InstanceStructType: PanicPoison,
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{
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floating_reference_guard!(ptr);
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let element = &*(ptr as *mut T::InstanceStructType);
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let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
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let imp = element.get_impl();
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// FIXME: Wrong signature in -sys bindings
|
|
// https://gitlab.freedesktop.org/gstreamer/gstreamer-rs-sys/issues/3
|
|
let buffer_ptr = buffer_ptr as *mut *mut gst_ffi::GstBuffer;
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), gst::FlowReturn::Error, {
|
|
match imp.create(&wrap, offset, length) {
|
|
Ok(buffer) => {
|
|
*buffer_ptr = buffer.into_ptr();
|
|
gst::FlowReturn::Ok
|
|
}
|
|
Err(err) => gst::FlowReturn::from(err),
|
|
}
|
|
})
|
|
.to_glib()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_do_seek<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
segment: *mut gst_ffi::GstSegment,
|
|
) -> glib_ffi::gboolean
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), false, {
|
|
imp.do_seek(&wrap, &mut from_glib_borrow(segment))
|
|
})
|
|
.to_glib()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_query<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
query_ptr: *mut gst_ffi::GstQuery,
|
|
) -> glib_ffi::gboolean
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
let query = gst::QueryRef::from_mut_ptr(query_ptr);
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), false, {
|
|
BaseSrcImpl::query(imp, &wrap, query)
|
|
})
|
|
.to_glib()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_event<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
event_ptr: *mut gst_ffi::GstEvent,
|
|
) -> glib_ffi::gboolean
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), false, {
|
|
imp.event(&wrap, &from_glib_borrow(event_ptr))
|
|
})
|
|
.to_glib()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_get_caps<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
filter: *mut gst_ffi::GstCaps,
|
|
) -> *mut gst_ffi::GstCaps
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
let filter = if filter.is_null() {
|
|
None
|
|
} else {
|
|
Some(gst::CapsRef::from_ptr(filter))
|
|
};
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), None, {
|
|
imp.get_caps(&wrap, filter)
|
|
})
|
|
.map(|caps| caps.into_ptr())
|
|
.unwrap_or(ptr::null_mut())
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_negotiate<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
) -> glib_ffi::gboolean
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), false, { imp.negotiate(&wrap) }).to_glib()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_set_caps<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
caps: *mut gst_ffi::GstCaps,
|
|
) -> glib_ffi::gboolean
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
let caps = gst::CapsRef::from_ptr(caps);
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), false, {
|
|
imp.set_caps(&wrap, caps)
|
|
})
|
|
.to_glib()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_fixate<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
caps: *mut gst_ffi::GstCaps,
|
|
) -> *mut gst_ffi::GstCaps
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
let caps = from_glib_full(caps);
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), gst::Caps::new_empty(), {
|
|
imp.fixate(&wrap, caps)
|
|
})
|
|
.into_ptr()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_unlock<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
) -> glib_ffi::gboolean
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), false, { imp.unlock(&wrap) }).to_glib()
|
|
}
|
|
|
|
unsafe extern "C" fn base_src_unlock_stop<T: BaseSrcBase>(
|
|
ptr: *mut gst_base_ffi::GstBaseSrc,
|
|
) -> glib_ffi::gboolean
|
|
where
|
|
T::ImplType: BaseSrcImpl<T>,
|
|
T::InstanceStructType: PanicPoison,
|
|
{
|
|
floating_reference_guard!(ptr);
|
|
let element = &*(ptr as *mut T::InstanceStructType);
|
|
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
|
|
let imp = element.get_impl();
|
|
|
|
panic_to_error!(&wrap, &element.panicked(), false, {
|
|
imp.unlock_stop(&wrap)
|
|
})
|
|
.to_glib()
|
|
}
|