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use glib::translate::*;
use gst_base::prelude::*;
use gst_base::subclass::prelude::*;
use std::ptr;
use crate::AudioAggregator;
use crate::AudioAggregatorPad;
pub trait AudioAggregatorImpl: AudioAggregatorImplExt + AggregatorImpl {
fn create_output_buffer(&self, num_frames: u32) -> Option<gst::Buffer> {
self.parent_create_output_buffer(num_frames)
}
#[allow(clippy::too_many_arguments)]
fn aggregate_one_buffer(
&self,
pad: &AudioAggregatorPad,
inbuf: &gst::BufferRef,
in_offset: u32,
outbuf: &mut gst::BufferRef,
out_offset: u32,
num_frames: u32,
) -> bool {
self.parent_aggregate_one_buffer(pad, inbuf, in_offset, outbuf, out_offset, num_frames)
}
}
pub trait AudioAggregatorImplExt: ObjectSubclass {
fn parent_create_output_buffer(&self, num_frames: u32) -> Option<gst::Buffer>;
#[allow(clippy::too_many_arguments)]
fn parent_aggregate_one_buffer(
&self,
pad: &AudioAggregatorPad,
inbuf: &gst::BufferRef,
in_offset: u32,
outbuf: &mut gst::BufferRef,
out_offset: u32,
num_frames: u32,
) -> bool;
}
impl<T: AudioAggregatorImpl> AudioAggregatorImplExt for T {
fn parent_create_output_buffer(&self, num_frames: u32) -> Option<gst::Buffer> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioAggregatorClass;
let f = (*parent_class)
.create_output_buffer
.expect("Missing parent function `create_output_buffer`");
from_glib_full(f(
self.obj()
.unsafe_cast_ref::<AudioAggregator>()
.to_glib_none()
.0,
num_frames,
))
}
}
fn parent_aggregate_one_buffer(
&self,
pad: &AudioAggregatorPad,
inbuf: &gst::BufferRef,
in_offset: u32,
outbuf: &mut gst::BufferRef,
out_offset: u32,
num_frames: u32,
) -> bool {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioAggregatorClass;
let f = (*parent_class)
.aggregate_one_buffer
.expect("Missing parent function `aggregate_one_buffer`");
from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioAggregator>()
.to_glib_none()
.0,
pad.to_glib_none().0,
inbuf.as_mut_ptr(),
in_offset,
outbuf.as_mut_ptr(),
out_offset,
num_frames,
))
}
}
}
unsafe impl<T: AudioAggregatorImpl> IsSubclassable<T> for AudioAggregator {
fn class_init(klass: &mut glib::Class<Self>) {
Self::parent_class_init::<T>(klass);
let klass = klass.as_mut();
klass.create_output_buffer = Some(audio_aggregator_create_output_buffer::<T>);
klass.aggregate_one_buffer = Some(audio_aggregator_aggregate_one_buffer::<T>);
}
}
unsafe extern "C" fn audio_aggregator_create_output_buffer<T: AudioAggregatorImpl>(
ptr: *mut ffi::GstAudioAggregator,
num_frames: u32,
) -> *mut gst::ffi::GstBuffer {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, None, { imp.create_output_buffer(num_frames) })
.map(|buffer| buffer.into_glib_ptr())
.unwrap_or(ptr::null_mut())
}
unsafe extern "C" fn audio_aggregator_aggregate_one_buffer<T: AudioAggregatorImpl>(
ptr: *mut ffi::GstAudioAggregator,
pad: *mut ffi::GstAudioAggregatorPad,
inbuf: *mut gst::ffi::GstBuffer,
in_offset: u32,
outbuf: *mut gst::ffi::GstBuffer,
out_offset: u32,
num_frames: u32,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, true, {
imp.aggregate_one_buffer(
&from_glib_borrow(pad),
gst::BufferRef::from_ptr(inbuf),
in_offset,
gst::BufferRef::from_mut_ptr(outbuf),
out_offset,
num_frames,
)
})
.into_glib()
}