use std::{mem, ptr};
use glib::translate::*;
use gst::subclass::prelude::*;
use crate::{prelude::*, AudioDecoder};
pub trait AudioDecoderImpl: AudioDecoderImplExt + ElementImpl {
fn open(&self) -> Result<(), gst::ErrorMessage> {
self.parent_open()
}
fn close(&self) -> Result<(), gst::ErrorMessage> {
self.parent_close()
}
fn start(&self) -> Result<(), gst::ErrorMessage> {
self.parent_start()
}
fn stop(&self) -> Result<(), gst::ErrorMessage> {
self.parent_stop()
}
fn set_format(&self, caps: &gst::Caps) -> Result<(), gst::LoggableError> {
self.parent_set_format(caps)
}
fn parse(&self, adapter: &gst_base::Adapter) -> Result<(u32, u32), gst::FlowError> {
self.parent_parse(adapter)
}
fn handle_frame(
&self,
buffer: Option<&gst::Buffer>,
) -> Result<gst::FlowSuccess, gst::FlowError> {
self.parent_handle_frame(buffer)
}
fn pre_push(&self, buffer: gst::Buffer) -> Result<Option<gst::Buffer>, gst::FlowError> {
self.parent_pre_push(buffer)
}
fn flush(&self, hard: bool) {
self.parent_flush(hard)
}
fn negotiate(&self) -> Result<(), gst::LoggableError> {
self.parent_negotiate()
}
fn caps(&self, filter: Option<&gst::Caps>) -> gst::Caps {
self.parent_caps(filter)
}
fn sink_event(&self, event: gst::Event) -> bool {
self.parent_sink_event(event)
}
fn sink_query(&self, query: &mut gst::QueryRef) -> bool {
self.parent_sink_query(query)
}
fn src_event(&self, event: gst::Event) -> bool {
self.parent_src_event(event)
}
fn src_query(&self, query: &mut gst::QueryRef) -> bool {
self.parent_src_query(query)
}
fn propose_allocation(
&self,
query: &mut gst::query::Allocation,
) -> Result<(), gst::LoggableError> {
self.parent_propose_allocation(query)
}
fn decide_allocation(
&self,
query: &mut gst::query::Allocation,
) -> Result<(), gst::LoggableError> {
self.parent_decide_allocation(query)
}
}
mod sealed {
pub trait Sealed {}
impl<T: super::AudioDecoderImplExt> Sealed for T {}
}
pub trait AudioDecoderImplExt: sealed::Sealed + ObjectSubclass {
fn parent_open(&self) -> Result<(), gst::ErrorMessage> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.open
.map(|f| {
if from_glib(f(self
.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0))
{
Ok(())
} else {
Err(gst::error_msg!(
gst::CoreError::StateChange,
["Parent function `open` failed"]
))
}
})
.unwrap_or(Ok(()))
}
}
fn parent_close(&self) -> Result<(), gst::ErrorMessage> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.close
.map(|f| {
if from_glib(f(self
.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0))
{
Ok(())
} else {
Err(gst::error_msg!(
gst::CoreError::StateChange,
["Parent function `close` failed"]
))
}
})
.unwrap_or(Ok(()))
}
}
fn parent_start(&self) -> Result<(), gst::ErrorMessage> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.start
.map(|f| {
if from_glib(f(self
.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0))
{
Ok(())
} else {
Err(gst::error_msg!(
gst::CoreError::StateChange,
["Parent function `start` failed"]
))
}
})
.unwrap_or(Ok(()))
}
}
fn parent_stop(&self) -> Result<(), gst::ErrorMessage> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.stop
.map(|f| {
if from_glib(f(self
.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0))
{
Ok(())
} else {
Err(gst::error_msg!(
gst::CoreError::StateChange,
["Parent function `stop` failed"]
))
}
})
.unwrap_or(Ok(()))
}
}
fn parent_set_format(&self, caps: &gst::Caps) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.set_format
.map(|f| {
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
caps.to_glib_none().0
),
gst::CAT_RUST,
"parent function `set_format` failed"
)
})
.unwrap_or(Ok(()))
}
}
fn parent_parse(&self, adapter: &gst_base::Adapter) -> Result<(u32, u32), gst::FlowError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.parse
.map(|f| {
let mut offset = mem::MaybeUninit::uninit();
let mut len = mem::MaybeUninit::uninit();
gst::FlowSuccess::try_from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
adapter.to_glib_none().0,
offset.as_mut_ptr(),
len.as_mut_ptr(),
))
.map(|_| {
let offset = offset.assume_init();
let len = len.assume_init();
assert!(offset >= 0);
assert!(len >= 0);
(offset as u32, len as u32)
})
})
.unwrap_or_else(|| Ok((0, adapter.available() as u32)))
}
}
fn parent_handle_frame(
&self,
buffer: Option<&gst::Buffer>,
) -> Result<gst::FlowSuccess, gst::FlowError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.handle_frame
.map(|f| {
try_from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
buffer
.map(|buffer| buffer.as_mut_ptr() as *mut *mut gst::ffi::GstBuffer)
.unwrap_or(ptr::null_mut()),
))
})
.unwrap_or(Err(gst::FlowError::Error))
}
}
fn parent_pre_push(&self, buffer: gst::Buffer) -> Result<Option<gst::Buffer>, gst::FlowError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
if let Some(f) = (*parent_class).pre_push {
let mut buffer = buffer.into_glib_ptr();
gst::FlowSuccess::try_from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
&mut buffer,
))
.map(|_| from_glib_full(buffer))
} else {
Ok(Some(buffer))
}
}
}
fn parent_flush(&self, hard: bool) {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.flush
.map(|f| {
f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
hard.into_glib(),
)
})
.unwrap_or(())
}
}
fn parent_negotiate(&self) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.negotiate
.map(|f| {
gst::result_from_gboolean!(
f(self
.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0),
gst::CAT_RUST,
"Parent function `negotiate` failed"
)
})
.unwrap_or(Ok(()))
}
}
fn parent_caps(&self, filter: Option<&gst::Caps>) -> gst::Caps {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.getcaps
.map(|f| {
from_glib_full(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
filter.to_glib_none().0,
))
})
.unwrap_or_else(|| {
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.proxy_getcaps(None, filter)
})
}
}
fn parent_sink_event(&self, event: gst::Event) -> bool {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
let f = (*parent_class)
.sink_event
.expect("Missing parent function `sink_event`");
from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
event.into_glib_ptr(),
))
}
}
fn parent_sink_query(&self, query: &mut gst::QueryRef) -> bool {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
let f = (*parent_class)
.sink_query
.expect("Missing parent function `sink_query`");
from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
query.as_mut_ptr(),
))
}
}
fn parent_src_event(&self, event: gst::Event) -> bool {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
let f = (*parent_class)
.src_event
.expect("Missing parent function `src_event`");
from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
event.into_glib_ptr(),
))
}
}
fn parent_src_query(&self, query: &mut gst::QueryRef) -> bool {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
let f = (*parent_class)
.src_query
.expect("Missing parent function `src_query`");
from_glib(f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
query.as_mut_ptr(),
))
}
}
fn parent_propose_allocation(
&self,
query: &mut gst::query::Allocation,
) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.propose_allocation
.map(|f| {
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
query.as_mut_ptr(),
),
gst::CAT_RUST,
"Parent function `propose_allocation` failed",
)
})
.unwrap_or(Ok(()))
}
}
fn parent_decide_allocation(
&self,
query: &mut gst::query::Allocation,
) -> Result<(), gst::LoggableError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstAudioDecoderClass;
(*parent_class)
.decide_allocation
.map(|f| {
gst::result_from_gboolean!(
f(
self.obj()
.unsafe_cast_ref::<AudioDecoder>()
.to_glib_none()
.0,
query.as_mut_ptr(),
),
gst::CAT_RUST,
"Parent function `decide_allocation` failed",
)
})
.unwrap_or(Ok(()))
}
}
}
impl<T: AudioDecoderImpl> AudioDecoderImplExt for T {}
unsafe impl<T: AudioDecoderImpl> IsSubclassable<T> for AudioDecoder {
fn class_init(klass: &mut glib::Class<Self>) {
Self::parent_class_init::<T>(klass);
let klass = klass.as_mut();
klass.open = Some(audio_decoder_open::<T>);
klass.close = Some(audio_decoder_close::<T>);
klass.start = Some(audio_decoder_start::<T>);
klass.stop = Some(audio_decoder_stop::<T>);
klass.set_format = Some(audio_decoder_set_format::<T>);
klass.parse = Some(audio_decoder_parse::<T>);
klass.handle_frame = Some(audio_decoder_handle_frame::<T>);
klass.pre_push = Some(audio_decoder_pre_push::<T>);
klass.flush = Some(audio_decoder_flush::<T>);
klass.negotiate = Some(audio_decoder_negotiate::<T>);
klass.getcaps = Some(audio_decoder_getcaps::<T>);
klass.sink_event = Some(audio_decoder_sink_event::<T>);
klass.src_event = Some(audio_decoder_src_event::<T>);
klass.sink_query = Some(audio_decoder_sink_query::<T>);
klass.src_query = Some(audio_decoder_src_query::<T>);
klass.propose_allocation = Some(audio_decoder_propose_allocation::<T>);
klass.decide_allocation = Some(audio_decoder_decide_allocation::<T>);
}
}
unsafe extern "C" fn audio_decoder_open<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.open() {
Ok(()) => true,
Err(err) => {
imp.post_error_message(err);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_close<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.close() {
Ok(()) => true,
Err(err) => {
imp.post_error_message(err);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_start<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.start() {
Ok(()) => true,
Err(err) => {
imp.post_error_message(err);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_stop<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.stop() {
Ok(()) => true,
Err(err) => {
imp.post_error_message(err);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_set_format<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
caps: *mut gst::ffi::GstCaps,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.set_format(&from_glib_borrow(caps)) {
Ok(()) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_parse<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
adapter: *mut gst_base::ffi::GstAdapter,
offset: *mut i32,
len: *mut i32,
) -> gst::ffi::GstFlowReturn {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, gst::FlowReturn::Error, {
match imp.parse(&from_glib_borrow(adapter)) {
Ok((new_offset, new_len)) => {
assert!(new_offset <= i32::MAX as u32);
assert!(new_len <= i32::MAX as u32);
*offset = new_offset as i32;
*len = new_len as i32;
Ok(gst::FlowSuccess::Ok)
}
Err(err) => Err(err),
}
.into()
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_handle_frame<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
buffer: *mut *mut gst::ffi::GstBuffer,
) -> gst::ffi::GstFlowReturn {
let buffer = buffer as *mut gst::ffi::GstBuffer;
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, gst::FlowReturn::Error, {
imp.handle_frame(Option::<gst::Buffer>::from_glib_none(buffer).as_ref())
.into()
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_pre_push<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
buffer: *mut *mut gst::ffi::GstBuffer,
) -> gst::ffi::GstFlowReturn {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, gst::FlowReturn::Error, {
match imp.pre_push(from_glib_full(*buffer)) {
Ok(Some(new_buffer)) => {
*buffer = new_buffer.into_glib_ptr();
Ok(gst::FlowSuccess::Ok)
}
Ok(None) => {
*buffer = ptr::null_mut();
Ok(gst::FlowSuccess::Ok)
}
Err(err) => Err(err),
}
.into()
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_flush<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
hard: glib::ffi::gboolean,
) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, (), { AudioDecoderImpl::flush(imp, from_glib(hard)) })
}
unsafe extern "C" fn audio_decoder_negotiate<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
match imp.negotiate() {
Ok(()) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_getcaps<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
filter: *mut gst::ffi::GstCaps,
) -> *mut gst::ffi::GstCaps {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, gst::Caps::new_empty(), {
AudioDecoderImpl::caps(
imp,
Option::<gst::Caps>::from_glib_borrow(filter)
.as_ref()
.as_ref(),
)
})
.into_glib_ptr()
}
unsafe extern "C" fn audio_decoder_sink_event<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
event: *mut gst::ffi::GstEvent,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, { imp.sink_event(from_glib_full(event)) }).into_glib()
}
unsafe extern "C" fn audio_decoder_sink_query<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
query: *mut gst::ffi::GstQuery,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
imp.sink_query(gst::QueryRef::from_mut_ptr(query))
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_src_event<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
event: *mut gst::ffi::GstEvent,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, { imp.src_event(from_glib_full(event)) }).into_glib()
}
unsafe extern "C" fn audio_decoder_src_query<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
query: *mut gst::ffi::GstQuery,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
gst::panic_to_error!(imp, false, {
imp.src_query(gst::QueryRef::from_mut_ptr(query))
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_propose_allocation<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
query: *mut gst::ffi::GstQuery,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
let query = match gst::QueryRef::from_mut_ptr(query).view_mut() {
gst::QueryViewMut::Allocation(allocation) => allocation,
_ => unreachable!(),
};
gst::panic_to_error!(imp, false, {
match imp.propose_allocation(query) {
Ok(()) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}
unsafe extern "C" fn audio_decoder_decide_allocation<T: AudioDecoderImpl>(
ptr: *mut ffi::GstAudioDecoder,
query: *mut gst::ffi::GstQuery,
) -> glib::ffi::gboolean {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
let query = match gst::QueryRef::from_mut_ptr(query).view_mut() {
gst::QueryViewMut::Allocation(allocation) => allocation,
_ => unreachable!(),
};
gst::panic_to_error!(imp, false, {
match imp.decide_allocation(query) {
Ok(()) => true,
Err(err) => {
err.log_with_imp(imp);
false
}
}
})
.into_glib()
}