GStreamer example: move video sink setup to a submodule

This makes it easier to reuse in a larger application.

examples/gstreamer-player/main.rs

@@ -6,10 +6,7 @@ slint::include_modules!();
 use futures::stream::StreamExt;
 use gst::{prelude::*, MessageView};
 
-#[cfg(slint_gstreamer_egl)]
-mod egl_integration;
-#[cfg(not(slint_gstreamer_egl))]
-mod software_rendering;
+mod slint_video_sink;
 
 fn main() -> anyhow::Result<()> {
     slint::BackendSelector::new()
@@ -28,10 +25,6 @@ fn main() -> anyhow::Result<()> {
         .downcast::<gst::Pipeline>()
         .unwrap();
 
-    let new_frame_callback = |app: App, new_frame| {
-        app.set_video_frame(new_frame);
-    };
-
     // Handle messages from the GStreamer pipeline bus.
     // For most GStreamer objects with buses, you can use `while let Some(msg) = bus.next().await`
     // inside an async closure passed to `slint::spawn_local` to read messages from the bus.
@@ -73,10 +66,7 @@ fn main() -> anyhow::Result<()> {
     })
     .unwrap();
 
-    #[cfg(not(slint_gstreamer_egl))]
-    software_rendering::init(&app, &pipeline, new_frame_callback, bus_sender)?;
-    #[cfg(slint_gstreamer_egl)]
-    egl_integration::init(&app, &pipeline, new_frame_callback, bus_sender)?;
+    slint_video_sink::init(&app, &pipeline, bus_sender)?;
 
     let pipeline_weak_for_callback = pipeline.downgrade();
     app.on_toggle_pause_play(move || {

examples/gstreamer-player/slint_video_sink/mod.rs

@@ -0,0 +1,25 @@
+// Copyright © SixtyFPS GmbH <info@slint.dev>
+// SPDX-License-Identifier: MIT
+
+use crate::App;
+use futures::channel::mpsc::UnboundedSender;
+
+#[cfg(slint_gstreamer_egl)]
+mod egl_integration;
+#[cfg(not(slint_gstreamer_egl))]
+mod software_rendering;
+
+pub fn init(
+    app: &App,
+    pipeline: &gst::Pipeline,
+    bus_sender: UnboundedSender<gst::Message>,
+) -> anyhow::Result<()> {
+    let new_frame_callback = |app: App, new_frame| {
+        app.set_video_frame(new_frame);
+    };
+
+    #[cfg(not(slint_gstreamer_egl))]
+    return software_rendering::init(app, pipeline, new_frame_callback, bus_sender);
+    #[cfg(slint_gstreamer_egl)]
+    return egl_integration::init(app, pipeline, new_frame_callback, bus_sender);
+}