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NOT WORKING CODE: How to look at factories for gst autoplug-select
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| // decodebin | |
| // .connect("autoplug-select", false, move |values| { | |
| // // Obtain a copy of the values field 3 - aka factories: | |
| // // See https://gstreamer.freedesktop.org/documentation/playback/decodebin.html?gi-language=c#decodebin::autoplug-sort | |
| // let factories = values[3].get::<gst::ElementFactory>().unwrap().unwrap(); | |
| // // let index = 0; | |
| // // while let Some(val) = factories.get_nth(index) { | |
| // // let elmf = val | |
| // // .downcast_ref::<gst::ElementFactory>() | |
| // // .expect("Not an ElementFactory") | |
| // // .get() | |
| // // .map_or_else( | |
| // // || "Was a None".to_string(), | |
| // // |elm| elm.get_element_type().name(), | |
| // // ); | |
| // gst_info!(CAT, "decodebin found the factory:\n{:?}", elmf); | |
| // } | |
| // // let factory_names = factories | |
| // // .iter() | |
| // // .map(|f| { | |
| // // f.downcast_ref::<gst::ElementFactory>() | |
| // // .expect("Not an ElementFactory") | |
| // // .get() | |
| // // .map_or_else( | |
| // // || "Was a None".to_string(), | |
| // // |elm| elm.get_element_type().name(), | |
| // // ) | |
| // // }) | |
| // // .collect::<Vec<String>>(); | |
| // // gst_info!( | |
| // // CAT, | |
| // // "decodebin found the following factories:\n{:?}", | |
| // // factory_names | |
| // // ); | |
| // Some(factories.to_value()) | |
| // }) | |
| // .unwrap(); | |
| // Ok(bin) | |
| // } |
when using autoplug-sort and then using the iter() or while loop we panic on the .expect("Not an ElementFactory")
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NOTE: not working code!