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gtk4: Set sync point on the video frame after mapping it
Otherwise it is not always ready for use yet in GTK even after waiting on the sync point, and a fully transparent texture is rendered instead. Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/320 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1103>
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1 changed files with 10 additions and 4 deletions
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@ -251,21 +251,27 @@ impl Frame {
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});
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if let Some(memory_ctx) = memory_ctx {
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let mapped_frame = if let Some(meta) = buffer.meta::<gst_gl::GLSyncMeta>() {
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meta.set_sync_point(memory_ctx);
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// If there is no GLSyncMeta yet then we need to add one here now, which requires
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// obtaining a writable buffer.
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let mapped_frame = if buffer.meta::<gst_gl::GLSyncMeta>().is_some() {
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gst_video::VideoFrame::from_buffer_readable_gl(buffer.clone(), info)
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.map_err(|_| gst::FlowError::Error)?
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} else {
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let mut buffer = buffer.clone();
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{
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let buffer = buffer.make_mut();
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let meta = gst_gl::GLSyncMeta::add(buffer, memory_ctx);
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meta.set_sync_point(memory_ctx);
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gst_gl::GLSyncMeta::add(buffer, memory_ctx);
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}
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gst_video::VideoFrame::from_buffer_readable_gl(buffer, info)
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.map_err(|_| gst::FlowError::Error)?
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};
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// Now that it's guaranteed that there is a sync meta and the frame is mapped, set
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// a sync point so we can ensure that the texture is ready later when making use of
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// it as gdk::GLTexture.
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let meta = mapped_frame.buffer().meta::<gst_gl::GLSyncMeta>().unwrap();
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meta.set_sync_point(memory_ctx);
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frame = Self {
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frame: mapped_frame,
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overlays: vec![],
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