mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-05-19 16:58:22 +00:00
133 lines
4 KiB
Rust
133 lines
4 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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use std::ptr;
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use glib::translate::*;
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use gst_base::{prelude::*, subclass::prelude::*};
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use crate::{AudioAggregator, AudioAggregatorPad};
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pub trait AudioAggregatorImpl: AudioAggregatorImplExt + AggregatorImpl {
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fn create_output_buffer(&self, num_frames: u32) -> Option<gst::Buffer> {
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self.parent_create_output_buffer(num_frames)
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}
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#[allow(clippy::too_many_arguments)]
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fn aggregate_one_buffer(
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&self,
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pad: &AudioAggregatorPad,
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inbuf: &gst::BufferRef,
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in_offset: u32,
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outbuf: &mut gst::BufferRef,
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out_offset: u32,
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num_frames: u32,
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) -> bool {
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self.parent_aggregate_one_buffer(pad, inbuf, in_offset, outbuf, out_offset, num_frames)
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}
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}
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mod sealed {
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pub trait Sealed {}
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impl<T: super::AudioAggregatorImplExt> Sealed for T {}
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}
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pub trait AudioAggregatorImplExt: sealed::Sealed + ObjectSubclass {
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fn parent_create_output_buffer(&self, num_frames: u32) -> Option<gst::Buffer> {
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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::GstAudioAggregatorClass;
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let f = (*parent_class)
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.create_output_buffer
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.expect("Missing parent function `create_output_buffer`");
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from_glib_full(f(
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self.obj()
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.unsafe_cast_ref::<AudioAggregator>()
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.to_glib_none()
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.0,
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num_frames,
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))
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}
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}
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fn parent_aggregate_one_buffer(
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&self,
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pad: &AudioAggregatorPad,
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inbuf: &gst::BufferRef,
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in_offset: u32,
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outbuf: &mut gst::BufferRef,
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out_offset: u32,
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num_frames: u32,
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) -> bool {
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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::GstAudioAggregatorClass;
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let f = (*parent_class)
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.aggregate_one_buffer
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.expect("Missing parent function `aggregate_one_buffer`");
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from_glib(f(
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self.obj()
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.unsafe_cast_ref::<AudioAggregator>()
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.to_glib_none()
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.0,
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pad.to_glib_none().0,
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inbuf.as_mut_ptr(),
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in_offset,
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outbuf.as_mut_ptr(),
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out_offset,
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num_frames,
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))
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}
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}
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}
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impl<T: AudioAggregatorImpl> AudioAggregatorImplExt for T {}
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unsafe impl<T: AudioAggregatorImpl> IsSubclassable<T> for AudioAggregator {
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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.create_output_buffer = Some(audio_aggregator_create_output_buffer::<T>);
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klass.aggregate_one_buffer = Some(audio_aggregator_aggregate_one_buffer::<T>);
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}
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}
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unsafe extern "C" fn audio_aggregator_create_output_buffer<T: AudioAggregatorImpl>(
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ptr: *mut ffi::GstAudioAggregator,
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num_frames: u32,
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) -> *mut gst::ffi::GstBuffer {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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gst::panic_to_error!(imp, None, { imp.create_output_buffer(num_frames) })
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.map(|buffer| buffer.into_glib_ptr())
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.unwrap_or(ptr::null_mut())
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}
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unsafe extern "C" fn audio_aggregator_aggregate_one_buffer<T: AudioAggregatorImpl>(
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ptr: *mut ffi::GstAudioAggregator,
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pad: *mut ffi::GstAudioAggregatorPad,
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inbuf: *mut gst::ffi::GstBuffer,
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in_offset: u32,
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outbuf: *mut gst::ffi::GstBuffer,
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out_offset: u32,
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num_frames: u32,
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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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gst::panic_to_error!(imp, true, {
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imp.aggregate_one_buffer(
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&from_glib_borrow(pad),
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gst::BufferRef::from_ptr(inbuf),
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in_offset,
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gst::BufferRef::from_mut_ptr(outbuf),
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out_offset,
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num_frames,
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)
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})
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.into_glib()
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}
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