mirrors/gstreamer-rs
mirrors/gstreamer-rs
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gstreamer-rs/gstreamer/src/pad.rs

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// Take a look at the license at the top of the repository in the LICENSE file.
use std::{
mem,
num::NonZeroU64,
ops::ControlFlow,
panic::{self, AssertUnwindSafe},
ptr,
};
use glib::{ffi::gpointer, prelude::*, translate::*};
use crate::{
format::{FormattedValue, SpecificFormattedValueFullRange, SpecificFormattedValueIntrinsic},
prelude::*,
Buffer, BufferList, Event, FlowError, FlowReturn, FlowSuccess, Format, GenericFormattedValue,
LoggableError, Pad, PadFlags, PadProbeReturn, PadProbeType, Query, QueryRef, StaticPadTemplate,
};
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct PadProbeId(NonZeroU64);
impl IntoGlib for PadProbeId {
type GlibType = libc::c_ulong;
#[inline]
fn into_glib(self) -> libc::c_ulong {
self.0.get() as libc::c_ulong
}
}
impl FromGlib<libc::c_ulong> for PadProbeId {
#[inline]
unsafe fn from_glib(val: libc::c_ulong) -> PadProbeId {
skip_assert_initialized!();
debug_assert_ne!(val, 0);
PadProbeId(NonZeroU64::new_unchecked(val as _))
}
}
impl PadProbeId {
#[inline]
pub fn as_raw(&self) -> libc::c_ulong {
self.0.get() as libc::c_ulong
}
}
#[doc(alias = "GstPadProbeInfo")]
#[derive(Debug)]
pub struct PadProbeInfo<'a> {
pub mask: PadProbeType,
pub id: Option<PadProbeId>,
pub offset: u64,
pub size: u32,
pub data: Option<PadProbeData<'a>>,
pub flow_res: Result<FlowSuccess, FlowError>,
}
#[derive(Debug)]
pub enum PadProbeData<'a> {
Buffer(Buffer),
BufferList(BufferList),
Query(&'a mut QueryRef),
Event(Event),
#[doc(hidden)]
__Unknown(*mut ffi::GstMiniObject),
}
unsafe impl<'a> Send for PadProbeData<'a> {}
unsafe impl<'a> Sync for PadProbeData<'a> {}
#[derive(Debug)]
#[must_use = "if unused the StreamLock will immediately unlock"]
pub struct StreamLock<'a>(&'a Pad);
impl<'a> Drop for StreamLock<'a> {
#[inline]
fn drop(&mut self) {
unsafe {
let pad: *mut ffi::GstPad = self.0.to_glib_none().0;
glib::ffi::g_rec_mutex_unlock(&mut (*pad).stream_rec_lock);
}
}
}
#[derive(Debug)]
pub enum PadGetRangeSuccess {
FilledBuffer,
NewBuffer(crate::Buffer),
}
#[derive(Debug)]
pub enum EventForeachAction {
Keep,
Remove,
Replace(Event),
}
pub trait PadExtManual: 'static {
#[doc(alias = "gst_pad_add_probe")]
fn add_probe<F>(&self, mask: PadProbeType, func: F) -> Option<PadProbeId>
where
F: Fn(&Self, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static;
#[doc(alias = "gst_pad_remove_probe")]
fn remove_probe(&self, id: PadProbeId);
#[doc(alias = "gst_pad_pull_range")]
fn pull_range(&self, offset: u64, size: u32) -> Result<Buffer, FlowError>;
fn pull_range_fill(
&self,
offset: u64,
buffer: &mut crate::BufferRef,
size: u32,
) -> Result<(), FlowError>;
#[doc(alias = "get_range")]
#[doc(alias = "gst_pad_get_range")]
fn range(&self, offset: u64, size: u32) -> Result<Buffer, FlowError>;
#[doc(alias = "get_range_fill")]
fn range_fill(
&self,
offset: u64,
buffer: &mut crate::BufferRef,
size: u32,
) -> Result<(), FlowError>;
#[doc(alias = "gst_pad_peer_query")]
fn peer_query(&self, query: &mut QueryRef) -> bool;
#[doc(alias = "gst_pad_query")]
fn query(&self, query: &mut QueryRef) -> bool;
fn proxy_query_caps(&self, query: &mut QueryRef) -> bool;
#[doc(alias = "gst_pad_proxy_query_accept_caps")]
fn proxy_query_accept_caps(&self, query: &mut QueryRef) -> bool;
#[doc(alias = "gst_pad_push_event")]
fn push_event(&self, event: impl Into<Event>) -> bool;
#[doc(alias = "gst_pad_send_event")]
fn send_event(&self, event: impl Into<Event>) -> bool;
#[doc(alias = "gst_pad_iterate_internal_links")]
fn iterate_internal_links(&self) -> crate::Iterator<Pad>;
fn stream_lock(&self) -> StreamLock;
#[doc(alias = "gst_pad_set_activate_function")]
#[doc(alias = "gst_pad_set_activate_function_full")]
unsafe fn set_activate_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>) -> Result<(), LoggableError> + Send + Sync + 'static;
#[doc(alias = "gst_pad_set_activatemode_function")]
#[doc(alias = "gst_pad_set_activatemode_function_full")]
unsafe fn set_activatemode_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::PadMode, bool) -> Result<(), LoggableError>
+ Send
+ Sync
+ 'static;
#[doc(alias = "gst_pad_set_chain_function")]
#[doc(alias = "gst_pad_set_chain_function_full")]
unsafe fn set_chain_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::Buffer) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static;
#[doc(alias = "gst_pad_set_chain_list_function")]
#[doc(alias = "gst_pad_set_chain_list_function_full")]
unsafe fn set_chain_list_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::BufferList) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static;
#[doc(alias = "gst_pad_set_event_function")]
#[doc(alias = "gst_pad_set_event_function_full")]
unsafe fn set_event_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::Event) -> bool + Send + Sync + 'static;
#[doc(alias = "gst_pad_set_event_full_function")]
#[doc(alias = "gst_pad_set_event_full_function_full")]
unsafe fn set_event_full_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::Event) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static;
#[doc(alias = "gst_pad_set_getrange_function")]
#[doc(alias = "gst_pad_set_getrange_function_full")]
unsafe fn set_getrange_function<F>(&self, func: F)
where
F: Fn(
&Self,
Option<&crate::Object>,
u64,
Option<&mut crate::BufferRef>,
u32,
) -> Result<PadGetRangeSuccess, crate::FlowError>
+ Send
+ Sync
+ 'static;
#[doc(alias = "gst_pad_set_iterate_internal_links_function")]
#[doc(alias = "gst_pad_set_iterate_internal_links_function_full")]
unsafe fn set_iterate_internal_links_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>) -> crate::Iterator<Pad> + Send + Sync + 'static;
#[doc(alias = "gst_pad_set_link_function")]
#[doc(alias = "gst_pad_set_link_function_full")]
unsafe fn set_link_function<F>(&self, func: F)
where
F: Fn(
&Self,
Option<&crate::Object>,
&Pad,
) -> Result<crate::PadLinkSuccess, crate::PadLinkError>
+ Send
+ Sync
+ 'static;
#[doc(alias = "gst_pad_set_query_function")]
#[doc(alias = "gst_pad_set_query_function_full")]
unsafe fn set_query_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, &mut crate::QueryRef) -> bool + Send + Sync + 'static;
#[doc(alias = "gst_pad_set_unlink_function")]
#[doc(alias = "gst_pad_set_unlink_function_full")]
unsafe fn set_unlink_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>) + Send + Sync + 'static;
#[doc(alias = "gst_pad_start_task")]
fn start_task<F: FnMut() + Send + 'static>(&self, func: F) -> Result<(), glib::BoolError>;
#[doc(alias = "gst_pad_peer_query_convert")]
fn peer_query_convert<U: SpecificFormattedValueFullRange>(
&self,
src_val: impl FormattedValue,
) -> Option<U>;
#[doc(alias = "gst_pad_peer_query_convert")]
fn peer_query_convert_generic(
&self,
src_val: impl FormattedValue,
dest_format: Format,
) -> Option<GenericFormattedValue>;
#[doc(alias = "gst_pad_peer_query_duration")]
fn peer_query_duration<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T>;
#[doc(alias = "gst_pad_peer_query_duration")]
fn peer_query_duration_generic(&self, format: Format) -> Option<GenericFormattedValue>;
#[doc(alias = "gst_pad_peer_query_position")]
fn peer_query_position<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T>;
#[doc(alias = "gst_pad_peer_query_position")]
fn peer_query_position_generic(&self, format: Format) -> Option<GenericFormattedValue>;
#[doc(alias = "gst_pad_query_convert")]
fn query_convert<U: SpecificFormattedValueFullRange>(
&self,
src_val: impl FormattedValue,
) -> Option<U>;
#[doc(alias = "gst_pad_query_convert")]
fn query_convert_generic(
&self,
src_val: impl FormattedValue,
dest_format: Format,
) -> Option<GenericFormattedValue>;
#[doc(alias = "gst_pad_query_duration")]
fn query_duration<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T>;
#[doc(alias = "gst_pad_query_duration")]
fn query_duration_generic(&self, format: Format) -> Option<GenericFormattedValue>;
#[doc(alias = "gst_pad_query_position")]
fn query_position<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T>;
#[doc(alias = "gst_pad_query_position")]
fn query_position_generic(&self, format: Format) -> Option<GenericFormattedValue>;
#[doc(alias = "get_mode")]
#[doc(alias = "GST_PAD_MODE")]
fn mode(&self) -> crate::PadMode;
#[doc(alias = "gst_pad_sticky_events_foreach")]
fn sticky_events_foreach<
F: FnMut(&Event) -> ControlFlow<EventForeachAction, EventForeachAction>,
>(
&self,
func: F,
);
#[doc(alias = "gst_pad_get_sticky_event")]
#[doc(alias = "get_sticky_event")]
fn sticky_event<T: crate::event::StickyEventType>(&self, idx: u32) -> Option<T::Owned>;
fn set_pad_flags(&self, flags: PadFlags);
fn unset_pad_flags(&self, flags: PadFlags);
#[doc(alias = "get_pad_flags")]
fn pad_flags(&self) -> PadFlags;
}
impl<O: IsA<Pad>> PadExtManual for O {
fn add_probe<F>(&self, mask: PadProbeType, func: F) -> Option<PadProbeId>
where
F: Fn(&Self, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static,
{
unsafe {
let func_box: Box<F> = Box::new(func);
let id = ffi::gst_pad_add_probe(
self.as_ref().to_glib_none().0,
mask.into_glib(),
Some(trampoline_pad_probe::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
if id == 0 {
None
} else {
Some(from_glib(id))
}
}
}
fn remove_probe(&self, id: PadProbeId) {
unsafe {
ffi::gst_pad_remove_probe(self.as_ref().to_glib_none().0, id.into_glib());
}
}
fn range(&self, offset: u64, size: u32) -> Result<Buffer, FlowError> {
unsafe {
let mut buffer = ptr::null_mut();
FlowSuccess::try_from_glib(ffi::gst_pad_get_range(
self.as_ref().to_glib_none().0,
offset,
size,
&mut buffer,
))
.map(|_| from_glib_full(buffer))
}
}
fn range_fill(
&self,
offset: u64,
buffer: &mut crate::BufferRef,
size: u32,
) -> Result<(), FlowError> {
assert!(buffer.size() >= size as usize);
unsafe {
let mut buffer_ref = buffer.as_mut_ptr();
FlowSuccess::try_from_glib(ffi::gst_pad_get_range(
self.as_ref().to_glib_none().0,
offset,
size,
&mut buffer_ref,
))
.and_then(|_| {
if buffer.as_mut_ptr() != buffer_ref {
ffi::gst_mini_object_unref(buffer_ref as *mut _);
Err(crate::FlowError::Error)
} else {
Ok(())
}
})
}
}
fn pull_range(&self, offset: u64, size: u32) -> Result<Buffer, FlowError> {
unsafe {
let mut buffer = ptr::null_mut();
FlowSuccess::try_from_glib(ffi::gst_pad_pull_range(
self.as_ref().to_glib_none().0,
offset,
size,
&mut buffer,
))
.map(|_| from_glib_full(buffer))
}
}
fn pull_range_fill(
&self,
offset: u64,
buffer: &mut crate::BufferRef,
size: u32,
) -> Result<(), FlowError> {
assert!(buffer.size() >= size as usize);
unsafe {
let mut buffer_ref = buffer.as_mut_ptr();
FlowSuccess::try_from_glib(ffi::gst_pad_pull_range(
self.as_ref().to_glib_none().0,
offset,
size,
&mut buffer_ref,
))
.and_then(|_| {
if buffer.as_mut_ptr() != buffer_ref {
ffi::gst_mini_object_unref(buffer_ref as *mut _);
Err(crate::FlowError::Error)
} else {
Ok(())
}
})
}
}
fn query(&self, query: &mut QueryRef) -> bool {
unsafe {
from_glib(ffi::gst_pad_query(
self.as_ref().to_glib_none().0,
query.as_mut_ptr(),
))
}
}
fn peer_query(&self, query: &mut QueryRef) -> bool {
unsafe {
from_glib(ffi::gst_pad_peer_query(
self.as_ref().to_glib_none().0,
query.as_mut_ptr(),
))
}
}
fn proxy_query_accept_caps(&self, query: &mut QueryRef) -> bool {
unsafe {
from_glib(ffi::gst_pad_proxy_query_accept_caps(
self.as_ref().to_glib_none().0,
query.as_mut_ptr(),
))
}
}
fn proxy_query_caps(&self, query: &mut QueryRef) -> bool {
unsafe {
from_glib(ffi::gst_pad_proxy_query_accept_caps(
self.as_ref().to_glib_none().0,
query.as_mut_ptr(),
))
}
}
fn push_event(&self, event: impl Into<Event>) -> bool {
unsafe {
from_glib(ffi::gst_pad_push_event(
self.as_ref().to_glib_none().0,
event.into().into_glib_ptr(),
))
}
}
fn send_event(&self, event: impl Into<Event>) -> bool {
unsafe {
from_glib(ffi::gst_pad_send_event(
self.as_ref().to_glib_none().0,
event.into().into_glib_ptr(),
))
}
}
fn iterate_internal_links(&self) -> crate::Iterator<Pad> {
unsafe {
from_glib_full(ffi::gst_pad_iterate_internal_links(
self.as_ref().to_glib_none().0,
))
}
}
fn stream_lock(&self) -> StreamLock {
unsafe {
let ptr: &mut ffi::GstPad = &mut *(self.as_ptr() as *mut _);
glib::ffi::g_rec_mutex_lock(&mut ptr.stream_rec_lock);
StreamLock(self.upcast_ref())
}
}
unsafe fn set_activate_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>) -> Result<(), LoggableError> + Send + Sync + 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_activate_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_activate_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_activatemode_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::PadMode, bool) -> Result<(), LoggableError>
+ Send
+ Sync
+ 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_activatemode_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_activatemode_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_chain_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::Buffer) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_chain_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_chain_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_chain_list_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::BufferList) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_chain_list_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_chain_list_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_event_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::Event) -> bool + Send + Sync + 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_event_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_event_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_event_full_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, crate::Event) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_event_full_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_event_full_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_getrange_function<F>(&self, func: F)
where
F: Fn(
&Self,
Option<&crate::Object>,
u64,
Option<&mut crate::BufferRef>,
u32,
) -> Result<PadGetRangeSuccess, crate::FlowError>
+ Send
+ Sync
+ 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_getrange_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_getrange_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_iterate_internal_links_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>) -> crate::Iterator<Pad> + Send + Sync + 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_iterate_internal_links_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_iterate_internal_links_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_link_function<F>(&self, func: F)
where
F: Fn(
&Self,
Option<&crate::Object>,
&Pad,
) -> Result<crate::PadLinkSuccess, crate::PadLinkError>
+ Send
+ Sync
+ 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_link_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_link_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_query_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>, &mut crate::QueryRef) -> bool + Send + Sync + 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_query_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_query_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
unsafe fn set_unlink_function<F>(&self, func: F)
where
F: Fn(&Self, Option<&crate::Object>) + Send + Sync + 'static,
{
let func_box: Box<F> = Box::new(func);
ffi::gst_pad_set_unlink_function_full(
self.as_ref().to_glib_none().0,
Some(trampoline_unlink_function::<Self, F>),
Box::into_raw(func_box) as gpointer,
Some(destroy_closure::<F>),
);
}
fn start_task<F: FnMut() + Send + 'static>(&self, func: F) -> Result<(), glib::BoolError> {
unsafe extern "C" fn trampoline_pad_task<F: FnMut() + Send + 'static>(func: gpointer) {
let (func, pad) = &mut *(func as *mut (F, *mut ffi::GstPad));
let pad = Pad::from_glib_borrow(*pad);
let result = panic::catch_unwind(AssertUnwindSafe(func));
if let Err(err) = result {
let element = match pad.parent_element() {
Some(element) => element,
None => panic::resume_unwind(err),
};
if pad.pause_task().is_err() {
crate::error!(crate::CAT_RUST, "could not stop pad task on panic");
}
crate::subclass::post_panic_error_message(&element, pad.upcast_ref(), Some(err));
}
}
fn into_raw_pad_task<F: FnMut() + Send + 'static>(
func: F,
pad: *mut ffi::GstPad,
) -> gpointer {
#[allow(clippy::type_complexity)]
let func: Box<(F, *mut ffi::GstPad)> = Box::new((func, pad));
Box::into_raw(func) as gpointer
}
unsafe extern "C" fn destroy_closure_pad_task<F>(ptr: gpointer) {
let _ = Box::<(F, *mut ffi::GstPad)>::from_raw(ptr as *mut _);
}
unsafe {
glib::result_from_gboolean!(
ffi::gst_pad_start_task(
self.as_ref().to_glib_none().0,
Some(trampoline_pad_task::<F>),
into_raw_pad_task(func, self.upcast_ref().as_ptr()),
Some(destroy_closure_pad_task::<F>),
),
"Failed to start pad task",
)
}
}
fn peer_query_convert<U: SpecificFormattedValueFullRange>(
&self,
src_val: impl FormattedValue,
) -> Option<U> {
unsafe {
let mut dest_val = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_peer_query_convert(
self.as_ref().to_glib_none().0,
src_val.format().into_glib(),
src_val.into_raw_value(),
U::default_format().into_glib(),
dest_val.as_mut_ptr(),
));
if ret {
Some(U::from_raw(U::default_format(), dest_val.assume_init()))
} else {
None
}
}
}
fn peer_query_convert_generic(
&self,
src_val: impl FormattedValue,
dest_format: Format,
) -> Option<GenericFormattedValue> {
unsafe {
let mut dest_val = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_peer_query_convert(
self.as_ref().to_glib_none().0,
src_val.format().into_glib(),
src_val.into_raw_value(),
dest_format.into_glib(),
dest_val.as_mut_ptr(),
));
if ret {
Some(GenericFormattedValue::new(
dest_format,
dest_val.assume_init(),
))
} else {
None
}
}
}
fn peer_query_duration<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T> {
unsafe {
let mut duration = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_peer_query_duration(
self.as_ref().to_glib_none().0,
T::default_format().into_glib(),
duration.as_mut_ptr(),
));
if ret {
try_from_glib(duration.assume_init()).ok()
} else {
None
}
}
}
fn peer_query_duration_generic(&self, format: Format) -> Option<GenericFormattedValue> {
unsafe {
let mut duration = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_peer_query_duration(
self.as_ref().to_glib_none().0,
format.into_glib(),
duration.as_mut_ptr(),
));
if ret {
Some(GenericFormattedValue::new(format, duration.assume_init()))
} else {
None
}
}
}
fn peer_query_position<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T> {
unsafe {
let mut cur = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_peer_query_position(
self.as_ref().to_glib_none().0,
T::default_format().into_glib(),
cur.as_mut_ptr(),
));
if ret {
try_from_glib(cur.assume_init()).ok()
} else {
None
}
}
}
fn peer_query_position_generic(&self, format: Format) -> Option<GenericFormattedValue> {
unsafe {
let mut cur = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_peer_query_position(
self.as_ref().to_glib_none().0,
format.into_glib(),
cur.as_mut_ptr(),
));
if ret {
Some(GenericFormattedValue::new(format, cur.assume_init()))
} else {
None
}
}
}
fn query_convert<U: SpecificFormattedValueFullRange>(
&self,
src_val: impl FormattedValue,
) -> Option<U> {
unsafe {
let mut dest_val = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_query_convert(
self.as_ref().to_glib_none().0,
src_val.format().into_glib(),
src_val.into_raw_value(),
U::default_format().into_glib(),
dest_val.as_mut_ptr(),
));
if ret {
Some(U::from_raw(U::default_format(), dest_val.assume_init()))
} else {
None
}
}
}
fn query_convert_generic(
&self,
src_val: impl FormattedValue,
dest_format: Format,
) -> Option<GenericFormattedValue> {
unsafe {
let mut dest_val = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_query_convert(
self.as_ref().to_glib_none().0,
src_val.format().into_glib(),
src_val.into_raw_value(),
dest_format.into_glib(),
dest_val.as_mut_ptr(),
));
if ret {
Some(GenericFormattedValue::new(
dest_format,
dest_val.assume_init(),
))
} else {
None
}
}
}
fn query_duration<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T> {
unsafe {
let mut duration = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_query_duration(
self.as_ref().to_glib_none().0,
T::default_format().into_glib(),
duration.as_mut_ptr(),
));
if ret {
try_from_glib(duration.assume_init()).ok()
} else {
None
}
}
}
fn query_duration_generic(&self, format: Format) -> Option<GenericFormattedValue> {
unsafe {
let mut duration = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_query_duration(
self.as_ref().to_glib_none().0,
format.into_glib(),
duration.as_mut_ptr(),
));
if ret {
Some(GenericFormattedValue::new(format, duration.assume_init()))
} else {
None
}
}
}
fn query_position<T: SpecificFormattedValueIntrinsic>(&self) -> Option<T> {
unsafe {
let mut cur = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_query_position(
self.as_ref().to_glib_none().0,
T::default_format().into_glib(),
cur.as_mut_ptr(),
));
if ret {
try_from_glib(cur.assume_init()).ok()
} else {
None
}
}
}
fn query_position_generic(&self, format: Format) -> Option<GenericFormattedValue> {
unsafe {
let mut cur = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gst_pad_query_position(
self.as_ref().to_glib_none().0,
format.into_glib(),
cur.as_mut_ptr(),
));
if ret {
Some(GenericFormattedValue::new(format, cur.assume_init()))
} else {
None
}
}
}
fn mode(&self) -> crate::PadMode {
unsafe {
let ptr: &ffi::GstPad = &*(self.as_ptr() as *const _);
from_glib(ptr.mode)
}
}
fn sticky_events_foreach<
F: FnMut(&Event) -> ControlFlow<EventForeachAction, EventForeachAction>,
>(
&self,
func: F,
) {
unsafe extern "C" fn trampoline<
F: FnMut(&Event) -> ControlFlow<EventForeachAction, EventForeachAction>,
>(
_pad: *mut ffi::GstPad,
event: *mut *mut ffi::GstEvent,
user_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let func = user_data as *mut F;
let res = (*func)(&from_glib_borrow(*event));
let (do_continue, ev_action) = match res {
ControlFlow::Continue(ev_action) => (glib::ffi::GTRUE, ev_action),
ControlFlow::Break(ev_action) => (glib::ffi::GFALSE, ev_action),
};
use EventForeachAction::*;
match ev_action {
Keep => (), // do nothing
Remove => {
ffi::gst_mini_object_unref(*event as *mut _);
*event = ptr::null_mut();
}
Replace(ev) => {
ffi::gst_mini_object_unref(*event as *mut _);
*event = ev.into_glib_ptr();
}
}
do_continue
}
unsafe {
let mut func = func;
let func_ptr = &mut func as *mut F as glib::ffi::gpointer;
ffi::gst_pad_sticky_events_foreach(
self.as_ref().to_glib_none().0,
Some(trampoline::<F>),
func_ptr,
);
}
}
fn sticky_event<T: crate::event::StickyEventType>(&self, idx: u32) -> Option<T::Owned> {
unsafe {
let ptr = ffi::gst_pad_get_sticky_event(
self.as_ref().to_glib_none().0,
T::TYPE.into_glib(),
idx,
);
if ptr.is_null() {
None
} else {
Some(T::from_event(from_glib_full(ptr)))
}
}
}
fn set_pad_flags(&self, flags: PadFlags) {
unsafe {
let ptr: *mut ffi::GstObject = self.as_ptr() as *mut _;
let _guard = crate::utils::MutexGuard::lock(&(*ptr).lock);
(*ptr).flags |= flags.into_glib();
}
}
fn unset_pad_flags(&self, flags: PadFlags) {
unsafe {
let ptr: *mut ffi::GstObject = self.as_ptr() as *mut _;
let _guard = crate::utils::MutexGuard::lock(&(*ptr).lock);
(*ptr).flags &= !flags.into_glib();
}
}
fn pad_flags(&self) -> PadFlags {
unsafe {
let ptr: *mut ffi::GstObject = self.as_ptr() as *mut _;
let _guard = crate::utils::MutexGuard::lock(&(*ptr).lock);
from_glib((*ptr).flags)
}
}
}
unsafe fn create_probe_info<'a>(
info: *mut ffi::GstPadProbeInfo,
) -> (PadProbeInfo<'a>, Option<glib::Type>) {
let mut data_type = None;
let flow_res = try_from_glib((*info).ABI.abi.flow_ret);
let info = PadProbeInfo {
mask: from_glib((*info).type_),
id: Some(PadProbeId(NonZeroU64::new_unchecked((*info).id as _))),
offset: (*info).offset,
size: (*info).size,
data: if (*info).data.is_null() {
None
} else {
let data = (*info).data as *mut ffi::GstMiniObject;
(*info).data = ptr::null_mut();
if (*data).type_ == Buffer::static_type().into_glib() {
data_type = Some(Buffer::static_type());
Some(PadProbeData::Buffer(from_glib_full(
data as *const ffi::GstBuffer,
)))
} else if (*data).type_ == BufferList::static_type().into_glib() {
data_type = Some(BufferList::static_type());
Some(PadProbeData::BufferList(from_glib_full(
data as *const ffi::GstBufferList,
)))
} else if (*data).type_ == Query::static_type().into_glib() {
data_type = Some(Query::static_type());
Some(PadProbeData::Query(QueryRef::from_mut_ptr(
data as *mut ffi::GstQuery,
)))
} else if (*data).type_ == Event::static_type().into_glib() {
data_type = Some(Event::static_type());
Some(PadProbeData::Event(from_glib_full(
data as *const ffi::GstEvent,
)))
} else {
Some(PadProbeData::__Unknown(data))
}
},
flow_res,
};
(info, data_type)
}
unsafe fn update_probe_info(
ret: PadProbeReturn,
probe_info: PadProbeInfo,
data_type: Option<glib::Type>,
info: *mut ffi::GstPadProbeInfo,
) {
if ret == PadProbeReturn::Handled {
// Handled queries need to be returned
// Handled buffers and buffer lists are consumed
// No other types can safely be used here
match probe_info.data {
Some(PadProbeData::Query(query)) => {
assert_eq!(data_type, Some(Query::static_type()));
(*info).data = query.as_mut_ptr() as *mut libc::c_void;
}
Some(PadProbeData::Buffer(_)) => {
assert_eq!(data_type, Some(Buffer::static_type()));
// Buffer not consumed by probe; consume it here
}
Some(PadProbeData::BufferList(_)) => {
assert_eq!(data_type, Some(BufferList::static_type()));
// BufferList not consumed by probe; consume it here
}
Some(PadProbeData::Event(_)) => {
assert_eq!(data_type, Some(Event::static_type()));
// Event not consumed by probe; consume it here
}
None if data_type == Some(Buffer::static_type())
|| data_type == Some(BufferList::static_type())
|| data_type == Some(Event::static_type()) =>
{
// Buffer or Event consumed by probe
}
other => panic!("Bad data for {data_type:?} pad probe returning Handled: {other:?}"),
}
} else {
match probe_info.data {
Some(PadProbeData::Buffer(buffer)) => {
assert_eq!(data_type, Some(Buffer::static_type()));
(*info).data = buffer.into_glib_ptr() as *mut libc::c_void;
}
Some(PadProbeData::BufferList(bufferlist)) => {
assert_eq!(data_type, Some(BufferList::static_type()));
(*info).data = bufferlist.into_glib_ptr() as *mut libc::c_void;
}
Some(PadProbeData::Event(event)) => {
assert_eq!(data_type, Some(Event::static_type()));
(*info).data = event.into_glib_ptr() as *mut libc::c_void;
}
Some(PadProbeData::Query(query)) => {
assert_eq!(data_type, Some(Query::static_type()));
(*info).data = query.as_mut_ptr() as *mut libc::c_void;
}
Some(PadProbeData::__Unknown(ptr)) => {
assert_eq!(data_type, None);
(*info).data = ptr as *mut libc::c_void;
}
None => {
assert_eq!(data_type, None);
}
}
}
let flow_ret: FlowReturn = probe_info.flow_res.into();
(*info).ABI.abi.flow_ret = flow_ret.into_glib();
}
unsafe extern "C" fn trampoline_pad_probe<
T,
F: Fn(&T, &mut PadProbeInfo) -> PadProbeReturn + Send + Sync + 'static,
>(
pad: *mut ffi::GstPad,
info: *mut ffi::GstPadProbeInfo,
func: gpointer,
) -> ffi::GstPadProbeReturn
where
T: IsA<Pad>,
{
let func: &F = &*(func as *const F);
let (mut probe_info, data_type) = create_probe_info(info);
let ret = func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
&mut probe_info,
);
update_probe_info(ret, probe_info, data_type, info);
ret.into_glib()
}
unsafe extern "C" fn trampoline_activate_function<
T,
F: Fn(&T, Option<&crate::Object>) -> Result<(), LoggableError> + Send + Sync + 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
) -> glib::ffi::gboolean
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).activatedata as *const F);
match func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
) {
Ok(()) => true,
Err(err) => {
err.log_with_object(&*Pad::from_glib_borrow(pad));
false
}
}
.into_glib()
}
unsafe extern "C" fn trampoline_activatemode_function<
T,
F: Fn(&T, Option<&crate::Object>, crate::PadMode, bool) -> Result<(), LoggableError>
+ Send
+ Sync
+ 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
mode: ffi::GstPadMode,
active: glib::ffi::gboolean,
) -> glib::ffi::gboolean
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).activatemodedata as *const F);
match func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
from_glib(mode),
from_glib(active),
) {
Ok(()) => true,
Err(err) => {
err.log_with_object(&*Pad::from_glib_borrow(pad));
false
}
}
.into_glib()
}
unsafe extern "C" fn trampoline_chain_function<
T,
F: Fn(&T, Option<&crate::Object>, crate::Buffer) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
buffer: *mut ffi::GstBuffer,
) -> ffi::GstFlowReturn
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).chaindata as *const F);
let res: FlowReturn = func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
from_glib_full(buffer),
)
.into();
res.into_glib()
}
unsafe extern "C" fn trampoline_chain_list_function<
T,
F: Fn(&T, Option<&crate::Object>, crate::BufferList) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
list: *mut ffi::GstBufferList,
) -> ffi::GstFlowReturn
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).chainlistdata as *const F);
let res: FlowReturn = func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
from_glib_full(list),
)
.into();
res.into_glib()
}
unsafe extern "C" fn trampoline_event_function<
T,
F: Fn(&T, Option<&crate::Object>, crate::Event) -> bool + Send + Sync + 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
event: *mut ffi::GstEvent,
) -> glib::ffi::gboolean
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).eventdata as *const F);
func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
from_glib_full(event),
)
.into_glib()
}
unsafe extern "C" fn trampoline_event_full_function<
T,
F: Fn(&T, Option<&crate::Object>, crate::Event) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
event: *mut ffi::GstEvent,
) -> ffi::GstFlowReturn
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).eventdata as *const F);
let res: FlowReturn = func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
from_glib_full(event),
)
.into();
res.into_glib()
}
#[allow(clippy::needless_option_as_deref)]
unsafe extern "C" fn trampoline_getrange_function<
T,
F: Fn(
&T,
Option<&crate::Object>,
u64,
Option<&mut crate::BufferRef>,
u32,
) -> Result<PadGetRangeSuccess, crate::FlowError>
+ Send
+ Sync
+ 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
offset: u64,
length: u32,
buffer: *mut *mut ffi::GstBuffer,
) -> ffi::GstFlowReturn
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).getrangedata as *const F);
debug_assert!(!buffer.is_null());
let pad = Pad::from_glib_borrow(pad);
let pad = pad.unsafe_cast_ref();
let mut passed_buffer = if (*buffer).is_null() {
None
} else {
Some(crate::BufferRef::from_mut_ptr(*buffer))
};
match func(
pad,
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
offset,
passed_buffer.as_deref_mut(),
length,
) {
Ok(PadGetRangeSuccess::NewBuffer(new_buffer)) => {
if let Some(passed_buffer) = passed_buffer {
crate::debug!(
crate::CAT_PERFORMANCE,
obj: pad.unsafe_cast_ref::<glib::Object>(),
"Returned new buffer from getrange function, copying into passed buffer"
);
let mut map = match passed_buffer.map_writable() {
Ok(map) => map,
Err(_) => {
crate::error!(
crate::CAT_RUST,
obj: pad.unsafe_cast_ref::<glib::Object>(),
"Failed to map passed buffer writable"
);
return ffi::GST_FLOW_ERROR;
}
};
let copied_size = new_buffer.copy_to_slice(0, &mut map);
drop(map);
if let Err(copied_size) = copied_size {
passed_buffer.set_size(copied_size);
}
match new_buffer.copy_into(passed_buffer, crate::BUFFER_COPY_METADATA, 0, None) {
Ok(_) => FlowReturn::Ok.into_glib(),
Err(_) => {
crate::error!(
crate::CAT_RUST,
obj: pad.unsafe_cast_ref::<glib::Object>(),
"Failed to copy buffer metadata"
);
FlowReturn::Error.into_glib()
}
}
} else {
*buffer = new_buffer.into_glib_ptr();
FlowReturn::Ok.into_glib()
}
}
Ok(PadGetRangeSuccess::FilledBuffer) => {
assert!(passed_buffer.is_some());
FlowReturn::Ok.into_glib()
}
Err(ret) => FlowReturn::from_error(ret).into_glib(),
}
}
unsafe extern "C" fn trampoline_iterate_internal_links_function<
T,
F: Fn(&T, Option<&crate::Object>) -> crate::Iterator<Pad> + Send + Sync + 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
) -> *mut ffi::GstIterator
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).iterintlinkdata as *const F);
// Steal the iterator and return it
let ret = func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
);
ret.into_glib_ptr()
}
unsafe extern "C" fn trampoline_link_function<
T,
F: Fn(
&T,
Option<&crate::Object>,
&crate::Pad,
) -> Result<crate::PadLinkSuccess, crate::PadLinkError>
+ Send
+ Sync
+ 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
peer: *mut ffi::GstPad,
) -> ffi::GstPadLinkReturn
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).linkdata as *const F);
let res: crate::PadLinkReturn = func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
&from_glib_borrow(peer),
)
.into();
res.into_glib()
}
unsafe extern "C" fn trampoline_query_function<
T,
F: Fn(&T, Option<&crate::Object>, &mut crate::QueryRef) -> bool + Send + Sync + 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
query: *mut ffi::GstQuery,
) -> glib::ffi::gboolean
where
T: IsA<Pad>,
{
let func: &F = &*((*pad).querydata as *const F);
func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
crate::QueryRef::from_mut_ptr(query),
)
.into_glib()
}
unsafe extern "C" fn trampoline_unlink_function<
T,
F: Fn(&T, Option<&crate::Object>) + Send + Sync + 'static,
>(
pad: *mut ffi::GstPad,
parent: *mut ffi::GstObject,
) where
T: IsA<Pad>,
{
let func: &F = &*((*pad).unlinkdata as *const F);
func(
Pad::from_glib_borrow(pad).unsafe_cast_ref(),
Option::<crate::Object>::from_glib_borrow(parent)
.as_ref()
.as_ref(),
)
}
unsafe extern "C" fn destroy_closure<F>(ptr: gpointer) {
let _ = Box::<F>::from_raw(ptr as *mut _);
}
impl Pad {
#[doc(alias = "gst_pad_new")]
pub fn new(name: Option<&str>, direction: crate::PadDirection) -> Self {
skip_assert_initialized!();
Self::builder(name, direction).build()
}
#[doc(alias = "gst_pad_new")]
pub fn builder(name: Option<&str>, direction: crate::PadDirection) -> PadBuilder<Self> {
skip_assert_initialized!();
PadBuilder::new(name, direction)
}
#[doc(alias = "gst_pad_new_from_static_template")]
pub fn from_static_template(templ: &StaticPadTemplate, name: Option<&str>) -> Self {
skip_assert_initialized!();
Self::builder_with_static_template(templ, name).build()
}
#[doc(alias = "gst_pad_new_from_static_template")]
pub fn builder_with_static_template(
templ: &StaticPadTemplate,
name: Option<&str>,
) -> PadBuilder<Self> {
skip_assert_initialized!();
PadBuilder::from_static_template(templ, name)
}
#[doc(alias = "gst_pad_new_from_template")]
pub fn from_template(templ: &crate::PadTemplate, name: Option<&str>) -> Self {
skip_assert_initialized!();
Self::builder_with_template(templ, name).build()
}
#[doc(alias = "gst_pad_new_from_template")]
pub fn builder_with_template(
templ: &crate::PadTemplate,
name: Option<&str>,
) -> PadBuilder<Self> {
skip_assert_initialized!();
PadBuilder::from_template(templ, name)
}
#[doc(alias = "gst_pad_query_default")]
pub fn query_default<O: IsA<Pad>>(
pad: &O,
parent: Option<&impl IsA<crate::Object>>,
query: &mut QueryRef,
) -> bool {
skip_assert_initialized!();
unsafe {
from_glib(ffi::gst_pad_query_default(
pad.as_ref().to_glib_none().0,
parent.map(|p| p.as_ref()).to_glib_none().0,
query.as_mut_ptr(),
))
}
}
#[doc(alias = "gst_pad_event_default")]
pub fn event_default<O: IsA<Pad>>(
pad: &O,
parent: Option<&impl IsA<crate::Object>>,
event: impl Into<Event>,
) -> bool {
skip_assert_initialized!();
unsafe {
from_glib(ffi::gst_pad_event_default(
pad.as_ref().to_glib_none().0,
parent.map(|p| p.as_ref()).to_glib_none().0,
event.into().into_glib_ptr(),
))
}
}
#[doc(alias = "gst_pad_iterate_internal_links_default")]
pub fn iterate_internal_links_default<O: IsA<Pad>>(
pad: &O,
parent: Option<&impl IsA<crate::Object>>,
) -> crate::Iterator<Pad> {
skip_assert_initialized!();
unsafe {
from_glib_full(ffi::gst_pad_iterate_internal_links_default(
pad.as_ref().to_glib_none().0,
parent.map(|p| p.as_ref()).to_glib_none().0,
))
}
}
}
#[must_use = "The builder must be built to be used"]
pub struct PadBuilder<T>(pub(crate) T);
impl<T: IsA<Pad> + IsA<glib::Object> + glib::object::IsClass> PadBuilder<T> {
pub fn new(name: Option<&str>, direction: crate::PadDirection) -> Self {
assert_initialized_main_thread!();
let pad = glib::Object::builder::<T>()
.property("name", name)
.property("direction", direction)
.build();
// Ghost pads are a bit special
if let Some(pad) = pad.dynamic_cast_ref::<crate::GhostPad>() {
unsafe {
let res = ffi::gst_ghost_pad_construct(pad.to_glib_none().0);
// This can't really fail...
debug_assert_ne!(res, glib::ffi::GFALSE, "Failed to construct ghost pad");
}
}
PadBuilder(pad)
}
pub fn from_static_template(templ: &StaticPadTemplate, name: Option<&str>) -> Self {
skip_assert_initialized!();
let templ = templ.get();
Self::from_template(&templ, name)
}
pub fn from_template(templ: &crate::PadTemplate, name: Option<&str>) -> Self {
assert_initialized_main_thread!();
let mut type_ = T::static_type();
// Since 1.14 templates can keep a pad GType with them, so we need to do some
// additional checks here now
if templ.has_property("gtype", Some(glib::Type::static_type())) {
let gtype = templ.property::<glib::Type>("gtype");
if gtype == glib::Type::UNIT {
// Nothing to be done, we can create any kind of pad
} else if gtype.is_a(type_) {
// We were asked to create a parent type of the template type, e.g. a gst::Pad for
// a template that wants a gst_base::AggregatorPad. Not a problem: update the type
type_ = gtype;
} else {
// Otherwise the requested type must be a subclass of the template pad type
assert!(type_.is_a(gtype));
}
}
let mut properties = [
("name", name.map(glib::GString::from).into()),
("direction", templ.direction().into()),
("template", templ.into()),
];
let pad =
unsafe { glib::Object::with_mut_values(type_, &mut properties).unsafe_cast::<T>() };
// Ghost pads are a bit special
if let Some(pad) = pad.dynamic_cast_ref::<crate::GhostPad>() {
unsafe {
let res = ffi::gst_ghost_pad_construct(pad.to_glib_none().0);
// This can't really fail...
debug_assert_ne!(res, glib::ffi::GFALSE, "Failed to construct ghost pad");
}
}
PadBuilder(pad)
}
#[doc(alias = "gst_pad_set_activate_function")]
pub fn activate_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>) -> Result<(), LoggableError> + Send + Sync + 'static,
{
unsafe {
self.0.set_activate_function(func);
}
self
}
#[doc(alias = "gst_pad_set_activatemode_function")]
pub fn activatemode_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>, crate::PadMode, bool) -> Result<(), LoggableError>
+ Send
+ Sync
+ 'static,
{
unsafe {
self.0.set_activatemode_function(func);
}
self
}
#[doc(alias = "gst_pad_set_chain_function")]
pub fn chain_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>, crate::Buffer) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
{
unsafe {
self.0.set_chain_function(func);
}
self
}
#[doc(alias = "gst_pad_set_chain_list_function")]
pub fn chain_list_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>, crate::BufferList) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
{
unsafe {
self.0.set_chain_list_function(func);
}
self
}
#[doc(alias = "gst_pad_set_event_function")]
pub fn event_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>, crate::Event) -> bool + Send + Sync + 'static,
{
unsafe {
self.0.set_event_function(func);
}
self
}
#[doc(alias = "gst_pad_set_event_full_function")]
pub fn event_full_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>, crate::Event) -> Result<FlowSuccess, FlowError>
+ Send
+ Sync
+ 'static,
{
unsafe {
self.0.set_event_full_function(func);
}
self
}
#[doc(alias = "gst_pad_set_getrange_function")]
pub fn getrange_function<F>(self, func: F) -> Self
where
F: Fn(
&T,
Option<&crate::Object>,
u64,
Option<&mut crate::BufferRef>,
u32,
) -> Result<PadGetRangeSuccess, crate::FlowError>
+ Send
+ Sync
+ 'static,
{
unsafe {
self.0.set_getrange_function(func);
}
self
}
#[doc(alias = "gst_pad_set_iterate_internal_links_function")]
pub fn iterate_internal_links_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>) -> crate::Iterator<Pad> + Send + Sync + 'static,
{
unsafe {
self.0.set_iterate_internal_links_function(func);
}
self
}
#[doc(alias = "gst_pad_set_link_function")]
pub fn link_function<F>(self, func: F) -> Self
where
F: Fn(
&T,
Option<&crate::Object>,
&Pad,
) -> Result<crate::PadLinkSuccess, crate::PadLinkError>
+ Send
+ Sync
+ 'static,
{
unsafe {
self.0.set_link_function(func);
}
self
}
#[doc(alias = "gst_pad_set_query_function")]
pub fn query_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>, &mut crate::QueryRef) -> bool + Send + Sync + 'static,
{
unsafe {
self.0.set_query_function(func);
}
self
}
#[doc(alias = "gst_pad_set_unlink_function")]
pub fn unlink_function<F>(self, func: F) -> Self
where
F: Fn(&T, Option<&crate::Object>) + Send + Sync + 'static,
{
unsafe {
self.0.set_unlink_function(func);
}
self
}
pub fn flags(self, flags: PadFlags) -> Self {
self.0.set_pad_flags(flags);
self
}
#[must_use = "Building the pad without using it has no effect"]
pub fn build(self) -> T {
self.0
}
}
#[cfg(test)]
mod tests {
use std::sync::{atomic::AtomicUsize, mpsc::channel, Arc, Mutex};
use super::*;
#[test]
fn test_event_chain_functions() {
crate::init().unwrap();
let events = Arc::new(Mutex::new(Vec::new()));
let events_clone = events.clone();
let buffers = Arc::new(Mutex::new(Vec::new()));
let buffers_clone = buffers.clone();
let pad = crate::Pad::builder(Some("sink"), crate::PadDirection::Sink)
.event_function(move |_, _, event| {
let mut events = events_clone.lock().unwrap();
events.push(event);
true
})
.chain_function(move |_, _, buffer| {
let mut buffers = buffers_clone.lock().unwrap();
buffers.push(buffer);
Ok(FlowSuccess::Ok)
})
.build();
pad.set_active(true).unwrap();
assert!(pad.send_event(crate::event::StreamStart::new("test")));
let segment = crate::FormattedSegment::<crate::ClockTime>::new();
assert!(pad.send_event(crate::event::Segment::new(segment.as_ref())));
assert_eq!(pad.chain(crate::Buffer::new()), Ok(FlowSuccess::Ok));
let events = events.lock().unwrap();
let buffers = buffers.lock().unwrap();
assert_eq!(events.len(), 2);
assert_eq!(buffers.len(), 1);
match events[0].view() {
crate::EventView::StreamStart(..) => (),
_ => unreachable!(),
}
match events[1].view() {
crate::EventView::Segment(..) => (),
_ => unreachable!(),
}
}
#[test]
fn test_getrange_function() {
crate::init().unwrap();
let pad = crate::Pad::builder(Some("src"), crate::PadDirection::Src)
.activate_function(|pad, _parent| {
pad.activate_mode(crate::PadMode::Pull, true)
.map_err(|err| err.into())
})
.getrange_function(|_pad, _parent, offset, _buffer, size| {
assert_eq!(offset, 0);
assert_eq!(size, 5);
let buffer = crate::Buffer::from_slice(b"abcde");
Ok(PadGetRangeSuccess::NewBuffer(buffer))
})
.build();
pad.set_active(true).unwrap();
let buffer = pad.range(0, 5).unwrap();
let map = buffer.map_readable().unwrap();
assert_eq!(&*map, b"abcde");
let mut buffer = crate::Buffer::with_size(5).unwrap();
pad.range_fill(0, buffer.get_mut().unwrap(), 5).unwrap();
let map = buffer.map_readable().unwrap();
assert_eq!(&*map, b"abcde");
pad.set_active(false).unwrap();
drop(pad);
let pad = crate::Pad::builder(Some("src"), crate::PadDirection::Src)
.activate_function(|pad, _parent| {
pad.activate_mode(crate::PadMode::Pull, true)
.map_err(|err| err.into())
})
.getrange_function(|_pad, _parent, offset, buffer, size| {
assert_eq!(offset, 0);
assert_eq!(size, 5);
if let Some(buffer) = buffer {
buffer.copy_from_slice(0, b"fghij").unwrap();
Ok(PadGetRangeSuccess::FilledBuffer)
} else {
let buffer = crate::Buffer::from_slice(b"abcde");
Ok(PadGetRangeSuccess::NewBuffer(buffer))
}
})
.build();
pad.set_active(true).unwrap();
let buffer = pad.range(0, 5).unwrap();
let map = buffer.map_readable().unwrap();
assert_eq!(&*map, b"abcde");
let mut buffer = crate::Buffer::with_size(5).unwrap();
pad.range_fill(0, buffer.get_mut().unwrap(), 5).unwrap();
let map = buffer.map_readable().unwrap();
assert_eq!(&*map, b"fghij");
}
#[test]
fn test_task() {
crate::init().unwrap();
let pad = crate::Pad::new(Some("sink"), crate::PadDirection::Sink);
let (sender, receiver) = channel();
let mut i = 0;
let pad_clone = pad.clone();
pad.start_task(move || {
i += 1;
if i == 3 {
sender.send(i).unwrap();
pad_clone.pause_task().unwrap();
}
})
.unwrap();
assert_eq!(receiver.recv().unwrap(), 3);
}
#[test]
fn test_remove_probe_from_probe() {
crate::init().unwrap();
let src_pad = crate::Pad::new(Some("src"), crate::PadDirection::Src);
let sink_pad = crate::Pad::builder(Some("sink"), crate::PadDirection::Sink)
.chain_function(|_pad, _parent, _buffer| Ok(crate::FlowSuccess::Ok))
.build();
src_pad.link(&sink_pad).unwrap();
let counter = Arc::new(AtomicUsize::new(0));
let counter_clone = counter.clone();
src_pad.add_probe(crate::PadProbeType::BUFFER, move |pad, info| {
if let Some(PadProbeData::Buffer(_)) = info.data {
counter_clone.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
pad.remove_probe(info.id.take().expect("no pad probe id"));
} else {
unreachable!();
}
crate::PadProbeReturn::Handled
});
sink_pad.set_active(true).unwrap();
src_pad.set_active(true).unwrap();
assert!(src_pad.push_event(crate::event::StreamStart::new("test")));
let segment = crate::FormattedSegment::<crate::ClockTime>::new();
assert!(src_pad.push_event(crate::event::Segment::new(segment.as_ref())));
assert_eq!(src_pad.push(crate::Buffer::new()), Ok(FlowSuccess::Ok));
assert_eq!(src_pad.push(crate::Buffer::new()), Ok(FlowSuccess::Ok));
assert_eq!(counter.load(std::sync::atomic::Ordering::SeqCst), 1);
}
#[test]
fn test_probe() {
crate::init().unwrap();
let (major, minor, micro, _) = crate::version();
let pad = crate::Pad::new(Some("src"), crate::PadDirection::Src);
let events = Arc::new(Mutex::new(Vec::new()));
let buffers = Arc::new(Mutex::new(Vec::new()));
let flow_override = if (major, minor, micro) >= (1, 16, 1) {
Err(FlowError::Eos)
} else {
// Broken on 1.16.0
// https://gitlab.freedesktop.org/gstreamer/gstreamer/merge_requests/151
Ok(FlowSuccess::Ok)
};
{
let events = events.clone();
pad.add_probe(crate::PadProbeType::EVENT_DOWNSTREAM, move |_, info| {
if let Some(PadProbeData::Event(event)) = &info.data {
let mut events = events.lock().unwrap();
events.push(event.clone());
} else {
unreachable!();
}
crate::PadProbeReturn::Ok
});
}
{
let events = events.clone();
pad.add_probe(crate::PadProbeType::EVENT_UPSTREAM, move |_, info| {
if let Some(PadProbeData::Event(event)) = info.data.take() {
let mut events = events.lock().unwrap();
events.push(event);
} else {
unreachable!();
}
crate::PadProbeReturn::Handled
});
}
{
let buffers = buffers.clone();
let flow_override = flow_override;
pad.add_probe(crate::PadProbeType::BUFFER, move |_, info| {
if let Some(PadProbeData::Buffer(buffer)) = info.data.take() {
let mut buffers = buffers.lock().unwrap();
info.flow_res = if buffers.is_empty() {
Ok(FlowSuccess::Ok)
} else {
flow_override
};
buffers.push(buffer);
} else {
unreachable!();
}
crate::PadProbeReturn::Handled
});
}
pad.set_active(true).unwrap();
assert!(
pad.send_event(crate::event::Latency::new(crate::ClockTime::from_nseconds(
10
)))
);
assert!(pad.push_event(crate::event::StreamStart::new("test")));
let segment = crate::FormattedSegment::<crate::ClockTime>::new();
assert!(pad.push_event(crate::event::Segment::new(segment.as_ref())));
assert_eq!(pad.push(crate::Buffer::new()), Ok(FlowSuccess::Ok));
assert_eq!(pad.push(crate::Buffer::new()), flow_override);
let events = events.lock().unwrap();
let buffers = buffers.lock().unwrap();
assert_eq!(events.len(), 3);
assert_eq!(buffers.len(), 2);
assert_eq!(events[0].type_(), crate::EventType::Latency);
assert_eq!(events[1].type_(), crate::EventType::StreamStart);
assert_eq!(events[2].type_(), crate::EventType::Segment);
assert!(
buffers.iter().all(|b| b.is_writable()),
"A buffer ref leaked!"
);
drop(pad); // Need to drop the pad first to unref sticky events
assert!(
events.iter().all(|e| e.is_writable()),
"An event ref leaked!"
);
}
#[test]
fn test_sticky_events() {
crate::init().unwrap();
let pad = crate::Pad::builder(Some("sink"), crate::PadDirection::Sink).build();
pad.set_active(true).unwrap();
// Send some sticky events
assert!(pad.send_event(crate::event::StreamStart::new("test")));
let caps = crate::Caps::builder("some/x-caps").build();
assert!(pad.send_event(crate::event::Caps::new(&caps)));
let segment = crate::FormattedSegment::<crate::ClockTime>::new();
assert!(pad.send_event(crate::event::Segment::new(segment.as_ref())));
let stream_start = pad.sticky_event::<crate::event::StreamStart>(0).unwrap();
assert_eq!(stream_start.stream_id(), "test");
let caps2 = pad.sticky_event::<crate::event::Caps>(0).unwrap();
assert_eq!(&*caps, caps2.caps());
let segment = pad.sticky_event::<crate::event::Segment>(0).unwrap();
assert_eq!(segment.segment().format(), crate::Format::Time);
}
#[test]
fn test_sticky_events_foreach() {
crate::init().unwrap();
let pad = crate::Pad::builder(Some("sink"), crate::PadDirection::Sink).build();
pad.set_active(true).unwrap();
// Send some sticky events
assert!(pad.send_event(crate::event::StreamStart::new("test")));
let caps = crate::Caps::builder("some/x-caps").build();
assert!(pad.send_event(crate::event::Caps::new(&caps)));
let segment = crate::FormattedSegment::<crate::ClockTime>::new();
assert!(pad.send_event(crate::event::Segment::new(segment.as_ref())));
let mut sticky_events = Vec::new();
pad.sticky_events_foreach(|event| {
sticky_events.push(event.clone());
ControlFlow::Continue(EventForeachAction::Keep)
});
assert_eq!(sticky_events.len(), 3);
// Test early exit from foreach loop
let mut sticky_events2 = Vec::new();
pad.sticky_events_foreach(|event| {
sticky_events2.push(event.clone());
if event.type_() == crate::EventType::Caps {
ControlFlow::Break(EventForeachAction::Keep)
} else {
ControlFlow::Continue(EventForeachAction::Keep)
}
});
assert_eq!(sticky_events2.len(), 2);
let mut sticky_events3 = Vec::new();
pad.sticky_events_foreach(|event| {
sticky_events3.push(event.clone());
ControlFlow::Continue(EventForeachAction::Keep)
});
assert_eq!(sticky_events3.len(), 3);
for (e1, e2) in sticky_events.iter().zip(sticky_events3.iter()) {
assert_eq!(e1.as_ref() as *const _, e2.as_ref() as *const _);
}
// Replace segment event
pad.sticky_events_foreach(|event| {
let action = if event.type_() == crate::EventType::Segment {
let byte_segment = crate::FormattedSegment::<crate::format::Bytes>::new();
EventForeachAction::Replace(crate::event::Segment::new(&byte_segment))
} else {
EventForeachAction::Keep
};
ControlFlow::Continue(action)
});
// Check that segment event is different now
let mut sticky_events4 = Vec::new();
pad.sticky_events_foreach(|event| {
sticky_events4.push(event.clone());
ControlFlow::Continue(EventForeachAction::Keep)
});
assert_eq!(sticky_events4.len(), 3);
assert_eq!(
sticky_events[0].as_ref() as *const _,
sticky_events4[0].as_ref() as *const _
);
assert_eq!(
sticky_events[1].as_ref() as *const _,
sticky_events4[1].as_ref() as *const _
);
assert_ne!(
sticky_events[2].as_ref() as *const _,
sticky_events4[2].as_ref() as *const _
);
// Drop caps event
pad.sticky_events_foreach(|event| {
let action = if event.type_() == crate::EventType::Caps {
EventForeachAction::Remove
} else {
EventForeachAction::Keep
};
ControlFlow::Continue(action)
});
// Check that caps event actually got removed
let mut sticky_events5 = Vec::new();
pad.sticky_events_foreach(|event| {
sticky_events5.push(event.clone());
ControlFlow::Continue(EventForeachAction::Keep)
});
assert_eq!(sticky_events5.len(), 2);
assert_eq!(
sticky_events4[0].as_ref() as *const _,
sticky_events5[0].as_ref() as *const _
);
assert_eq!(
sticky_events4[2].as_ref() as *const _,
sticky_events5[1].as_ref() as *const _
);
}
}
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