gstreamer-rs/gstreamer-player/src/player.rs
2020-11-22 19:15:21 +02:00

135 lines
4.5 KiB
Rust

// 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.
use crate::Player;
use crate::PlayerSignalDispatcher;
use crate::PlayerVideoRenderer;
use glib::object::ObjectType;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::mem::transmute;
impl Player {
pub fn new(
video_renderer: Option<&PlayerVideoRenderer>,
signal_dispatcher: Option<&PlayerSignalDispatcher>,
) -> Player {
assert_initialized_main_thread!();
let video_renderer = video_renderer.to_glib_full();
let signal_dispatcher = signal_dispatcher.to_glib_full();
let (major, minor, _, _) = gst::version();
if (major, minor) > (1, 12) {
unsafe { from_glib_full(ffi::gst_player_new(video_renderer, signal_dispatcher)) }
} else {
// Workaround for bad floating reference handling in 1.12. This issue was fixed for 1.13 in
// https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/gst-libs/gst/player/gstplayer.c?id=634cd87c76f58b5e1383715bafd5614db825c7d1
unsafe { from_glib_none(ffi::gst_player_new(video_renderer, signal_dispatcher)) }
}
}
pub fn get_config(&self) -> crate::PlayerConfig {
unsafe { from_glib_full(ffi::gst_player_get_config(self.to_glib_none().0)) }
}
pub fn set_config(&self, config: crate::PlayerConfig) -> Result<(), glib::error::BoolError> {
unsafe {
glib::glib_result_from_gboolean!(
ffi::gst_player_set_config(self.to_glib_none().0, config.into_ptr()),
"Failed to set config",
)
}
}
pub fn connect_duration_changed<F: Fn(&Player, gst::ClockTime) + Send + 'static>(
&self,
f: F,
) -> SignalHandlerId {
#[allow(clippy::cast_ptr_alignment)]
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"duration-changed\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
duration_changed_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
pub fn connect_position_updated<F: Fn(&Player, gst::ClockTime) + Send + 'static>(
&self,
f: F,
) -> SignalHandlerId {
#[allow(clippy::cast_ptr_alignment)]
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"position-updated\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
position_updated_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
pub fn connect_seek_done<F: Fn(&Player, gst::ClockTime) + Send + 'static>(
&self,
f: F,
) -> SignalHandlerId {
#[allow(clippy::cast_ptr_alignment)]
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"seek-done\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
seek_done_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
}
unsafe extern "C" fn duration_changed_trampoline<
F: Fn(&Player, gst::ClockTime) + Send + 'static,
>(
this: *mut ffi::GstPlayer,
object: u64,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this), gst::ClockTime(Some(object)))
}
unsafe extern "C" fn position_updated_trampoline<
F: Fn(&Player, gst::ClockTime) + Send + 'static,
>(
this: *mut ffi::GstPlayer,
object: u64,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this), gst::ClockTime(Some(object)))
}
unsafe extern "C" fn seek_done_trampoline<F: Fn(&Player, gst::ClockTime) + Send + 'static>(
this: *mut ffi::GstPlayer,
object: u64,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this), gst::ClockTime(Some(object)))
}