gstreamer-rs/gstreamer-video/src/video_event.rs

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// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
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use gst_sys;
use gst_video_sys;
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use glib::translate::{from_glib, from_glib_full, ToGlib};
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use glib::ToSendValue;
use gst;
use gst::MiniObject;
use std::mem;
pub fn is_force_key_unit_event(event: &gst::EventRef) -> bool {
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unsafe {
from_glib(gst_video_sys::gst_video_event_is_force_key_unit(
event.as_mut_ptr(),
))
}
}
// FIXME: Copy from gstreamer/src/event.rs
macro_rules! event_builder_generic_impl {
($new_fn:expr) => {
pub fn seqnum(self, seqnum: gst::Seqnum) -> Self {
Self {
seqnum: Some(seqnum),
.. self
}
}
pub fn running_time_offset(self, running_time_offset: i64) -> Self {
Self {
running_time_offset: Some(running_time_offset),
.. self
}
}
pub fn other_fields(self, other_fields: &[(&'a str, &'a ToSendValue)]) -> Self {
Self {
other_fields: self.other_fields.iter().cloned()
.chain(other_fields.iter().cloned())
.collect(),
.. self
}
}
pub fn build(mut self) -> gst::Event {
assert_initialized_main_thread!();
unsafe {
let event = $new_fn(&mut self);
if let Some(seqnum) = self.seqnum {
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gst_sys::gst_event_set_seqnum(event, seqnum.to_glib());
}
if let Some(running_time_offset) = self.running_time_offset {
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gst_sys::gst_event_set_running_time_offset(event, running_time_offset);
}
{
let s = gst::StructureRef::from_glib_borrow_mut(
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gst_sys::gst_event_writable_structure(event)
);
for (k, v) in self.other_fields {
s.set_value(k, v.to_send_value());
}
}
from_glib_full(event)
}
}
}
}
pub fn new_downstream_force_key_unit_event<'a>() -> DownstreamForceKeyUnitEventBuilder<'a> {
DownstreamForceKeyUnitEventBuilder::new()
}
pub struct DownstreamForceKeyUnitEventBuilder<'a> {
seqnum: Option<gst::Seqnum>,
running_time_offset: Option<i64>,
other_fields: Vec<(&'a str, &'a ToSendValue)>,
timestamp: gst::ClockTime,
stream_time: gst::ClockTime,
running_time: gst::ClockTime,
all_headers: bool,
count: u32,
}
impl<'a> DownstreamForceKeyUnitEventBuilder<'a> {
fn new() -> Self {
skip_assert_initialized!();
Self {
seqnum: None,
running_time_offset: None,
other_fields: Vec::new(),
timestamp: gst::CLOCK_TIME_NONE,
stream_time: gst::CLOCK_TIME_NONE,
running_time: gst::CLOCK_TIME_NONE,
all_headers: true,
count: 0,
}
}
pub fn timestamp(self, timestamp: gst::ClockTime) -> Self {
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Self { timestamp, ..self }
}
pub fn stream_time(self, stream_time: gst::ClockTime) -> Self {
Self {
stream_time,
..self
}
}
pub fn running_time(self, running_time: gst::ClockTime) -> Self {
Self {
running_time,
..self
}
}
pub fn all_headers(self, all_headers: bool) -> Self {
Self {
all_headers,
..self
}
}
pub fn count(self, count: u32) -> Self {
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Self { count, ..self }
}
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event_builder_generic_impl!(|s: &mut Self| {
gst_video_sys::gst_video_event_new_downstream_force_key_unit(
s.timestamp.to_glib(),
s.stream_time.to_glib(),
s.running_time.to_glib(),
s.all_headers.to_glib(),
s.count,
)
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});
}
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct DownstreamForceKeyUnitEvent {
pub timestamp: gst::ClockTime,
pub stream_time: gst::ClockTime,
pub running_time: gst::ClockTime,
pub all_headers: bool,
pub count: u32,
}
pub fn parse_downstream_force_key_unit_event(
event: &gst::EventRef,
) -> Option<DownstreamForceKeyUnitEvent> {
unsafe {
let mut timestamp = mem::uninitialized();
let mut stream_time = mem::uninitialized();
let mut running_time = mem::uninitialized();
let mut all_headers = mem::uninitialized();
let mut count = mem::uninitialized();
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let res: bool = from_glib(
gst_video_sys::gst_video_event_parse_downstream_force_key_unit(
event.as_mut_ptr(),
&mut timestamp,
&mut stream_time,
&mut running_time,
&mut all_headers,
&mut count,
),
);
if res {
Some(DownstreamForceKeyUnitEvent {
timestamp: from_glib(timestamp),
stream_time: from_glib(stream_time),
running_time: from_glib(running_time),
all_headers: from_glib(all_headers),
count,
})
} else {
None
}
}
}
pub fn new_upstream_force_key_unit_event<'a>() -> UpstreamForceKeyUnitEventBuilder<'a> {
UpstreamForceKeyUnitEventBuilder::new()
}
pub struct UpstreamForceKeyUnitEventBuilder<'a> {
seqnum: Option<gst::Seqnum>,
running_time_offset: Option<i64>,
other_fields: Vec<(&'a str, &'a ToSendValue)>,
running_time: gst::ClockTime,
all_headers: bool,
count: u32,
}
impl<'a> UpstreamForceKeyUnitEventBuilder<'a> {
fn new() -> Self {
skip_assert_initialized!();
Self {
seqnum: None,
running_time_offset: None,
other_fields: Vec::new(),
running_time: gst::CLOCK_TIME_NONE,
all_headers: true,
count: 0,
}
}
pub fn running_time(self, running_time: gst::ClockTime) -> Self {
Self {
running_time,
..self
}
}
pub fn all_headers(self, all_headers: bool) -> Self {
Self {
all_headers,
..self
}
}
pub fn count(self, count: u32) -> Self {
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Self { count, ..self }
}
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event_builder_generic_impl!(|s: &mut Self| {
gst_video_sys::gst_video_event_new_upstream_force_key_unit(
s.running_time.to_glib(),
s.all_headers.to_glib(),
s.count,
)
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});
}
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct UpstreamForceKeyUnitEvent {
pub running_time: gst::ClockTime,
pub all_headers: bool,
pub count: u32,
}
pub fn parse_upstream_force_key_unit_event(
event: &gst::EventRef,
) -> Option<UpstreamForceKeyUnitEvent> {
unsafe {
let mut running_time = mem::uninitialized();
let mut all_headers = mem::uninitialized();
let mut count = mem::uninitialized();
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let res: bool = from_glib(
gst_video_sys::gst_video_event_parse_upstream_force_key_unit(
event.as_mut_ptr(),
&mut running_time,
&mut all_headers,
&mut count,
),
);
if res {
Some(UpstreamForceKeyUnitEvent {
running_time: from_glib(running_time),
all_headers: from_glib(all_headers),
count,
})
} else {
None
}
}
}
#[derive(Clone, PartialEq, Eq, Debug)]
pub enum ForceKeyUnitEvent {
Downstream(DownstreamForceKeyUnitEvent),
Upstream(UpstreamForceKeyUnitEvent),
}
pub fn parse_force_key_unit_event(event: &gst::EventRef) -> Option<ForceKeyUnitEvent> {
if event.is_upstream() {
parse_upstream_force_key_unit_event(event).map(ForceKeyUnitEvent::Upstream)
} else {
parse_downstream_force_key_unit_event(event).map(ForceKeyUnitEvent::Downstream)
}
}
pub fn new_still_frame_event<'a>(in_still: bool) -> StillFrameEventBuilder<'a> {
StillFrameEventBuilder::new(in_still)
}
pub struct StillFrameEventBuilder<'a> {
seqnum: Option<gst::Seqnum>,
running_time_offset: Option<i64>,
other_fields: Vec<(&'a str, &'a ToSendValue)>,
in_still: bool,
}
impl<'a> StillFrameEventBuilder<'a> {
fn new(in_still: bool) -> Self {
skip_assert_initialized!();
Self {
seqnum: None,
running_time_offset: None,
other_fields: Vec::new(),
in_still,
}
}
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event_builder_generic_impl!(
|s: &mut Self| gst_video_sys::gst_video_event_new_still_frame(s.in_still.to_glib())
);
}
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct StillFrameEvent {
pub in_still: bool,
}
pub fn parse_still_frame_event(event: &gst::EventRef) -> Option<StillFrameEvent> {
unsafe {
let mut in_still = mem::uninitialized();
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let res: bool = from_glib(gst_video_sys::gst_video_event_parse_still_frame(
event.as_mut_ptr(),
&mut in_still,
));
if res {
Some(StillFrameEvent {
in_still: from_glib(in_still),
})
} else {
None
}
}
}