fix(iced-video): Fix the very high ram usage

feat(playback): add GstPlayFlags for playbin and playbin3

crates/iced-video/src/source.rs

@@ -5,7 +5,7 @@ use gst::{
     caps::{Caps, CapsType},
     element::ElementExt,
     pipeline::PipelineExt,
-    playback::Playbin3,
+    playback::{PlayFlags, Playbin, Playbin3},
     videoconvertscale::VideoConvert,
 };
 use std::sync::{Arc, Mutex, atomic::AtomicBool};
@@ -34,20 +34,21 @@ impl VideoSource {
         appsink
             .drop(true)
             .sync(true)
-            .async_(true)
+            // .async_(true)
             .emit_signals(true)
             .caps(
                 Caps::builder(CapsType::Video)
-                    .field("format", "RGBA")
+                    .field("format", "RGB10A2_LE") // Forced for now
                     .build(),
             );
         let video_sink = videoconvert.link(&appsink).change_context(Error)?;
-        let playbin = gst::plugins::playback::Playbin3::new("iced-video")
+        let playbin = Playbin3::new("iced-video")
             .change_context(Error)?
             .with_uri(url.as_ref())
             .with_buffer_duration(core::time::Duration::from_secs(2))
             .with_buffer_size(4096 * 4096 * 4 * 3)
             .with_ring_buffer_max_size(4096 * 4096 * 4 * 3)
+            .with_flags(PlayFlags::default() | PlayFlags::DOWNLOAD)
             .with_video_sink(&video_sink);
         let bus = playbin.bus().change_context(Error)?;
         playbin.pause().change_context(Error)?;
@@ -90,10 +91,7 @@ impl VideoSource {
     }
 
     pub fn is_playing(&self) -> Result<bool> {
-        let state = self
-            .playbin
-            .state(core::time::Duration::from_millis(0))
-            .change_context(Error)?;
+        let state = self.playbin.state(None).change_context(Error)?;
         Ok(state == gst::State::Playing)
     }