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player: PlayerVideoRenderer::create_sink_element() is transfer none

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This commit is contained in:
Sebastian Dröge 2020-12-26 11:42:45 +02:00
parent 71a3354226
commit 1523382b18
2 changed files with 29 additions and 3 deletions
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1
gstreamer-player/Cargo.toml
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@ -20,6 +20,7 @@ ffi = { package = "gstreamer-player-sys", path = "sys" }
glib = { git = "https://github.com/gtk-rs/gtk-rs" }
gst = { package = "gstreamer", path = "../gstreamer", features = ["v1_12"] }
gst-video = { package = "gstreamer-video", path = "../gstreamer-video", features = ["v1_12"] }
once_cell = "1.0"
[build-dependencies]
gstreamer-rs-lgpl-docs = { path = "../docs", optional = true }

31
gstreamer-player/src/subclass/player_video_renderer.rs
View file

@ -25,12 +25,37 @@ unsafe extern "C" fn video_renderer_create_video_sink<T: PlayerVideoRendererImpl
video_renderer: *mut ffi::GstPlayerVideoRenderer,
player: *mut ffi::GstPlayer,
) -> *mut gst::ffi::GstElement {
use once_cell::sync::Lazy;
static VIDEO_SINK_QUARK: Lazy<glib::Quark> =
Lazy::new(|| glib::Quark::from_string("gstreamer-rs-player-video-sink"));
let instance = &*(video_renderer as *mut T::Instance);
let imp = instance.get_impl();
imp.create_video_sink(
let sink = imp.create_video_sink(
from_glib_borrow::<_, PlayerVideoRenderer>(video_renderer).unsafe_cast_ref(),
&Player::from_glib_borrow(player),
)
.to_glib_full()
);
let sink_ptr: *mut gst::ffi::GstElement = sink.to_glib_none().0;
let old_sink_ptr =
glib::gobject_ffi::g_object_get_qdata(video_renderer as *mut _, VIDEO_SINK_QUARK.to_glib())
as *mut gst::ffi::GstElement;
if !old_sink_ptr.is_null() && old_sink_ptr != sink_ptr {
panic!("Video sink must not change");
}
unsafe extern "C" fn unref(ptr: glib::ffi::gpointer) {
glib::gobject_ffi::g_object_unref(ptr as *mut _);
}
glib::gobject_ffi::g_object_set_qdata_full(
video_renderer as *mut _,
VIDEO_SINK_QUARK.to_glib(),
glib::gobject_ffi::g_object_ref(sink_ptr as *mut _) as *mut _,
Some(unref),
);
sink_ptr
}