gstreamer examples hello-world

something gets opened

notes.org

@@ -33,6 +33,8 @@ $ nix shell nixpkgs#kdePackages.qttools
 * the receiving of the signals
 
 * all the different tabs i had
+** overall freedesktop portal dbus api docs
+https://docs.flatpak.org/en/latest/portal-api-reference.html#gdbus-org.freedesktop.portal.ScreenCast
 
 ** searching github for 'get-managed-objects usage
 https://github.com/search?q=get-managed-objects&type=code
@@ -125,3 +127,58 @@ https://gitlab.gnome.org/-/snippets/19
 
 ** doc about cl bindings to gtk3
 https://www.crategus.com/books/cl-gtk/gtk-tutorial.html#example-window-simple-c
+
+** well, i guess i could go and try to read guide on pipewire with C examples
+https://docs.pipewire.org/page_tutorial.html
+this is tutorial for the system
+
+and here is example program that maybe does similar thing
+https://docs.pipewire.org/video-play_8c-example.html
+
+* [2024-07-28 Sun]
+
+** ok, now i'm trying to get frames from the pipewire 'out' node
+and one option i'm exploring is gstreamer
+
+which is a framework for creating applications that stream video / audio
+with some kind of ability to define \ declare pipeline and then start
+and then use api somehow
+
+there's c api, and gobject accessibility layer
+so either c to common lisp, or gobject common lisp thingy maybe exist
+
+** reading docs
+https://gstreamer.freedesktop.org/documentation/frequently-asked-questions/using.html?gi-language=c
+
+added via
+gst_all_1.gstreamer
+
+** more readin
+gst-launch-1.0 videotestsrc ! videoconvert ! autovideosink
+this is test for how it's installed
+
+needed to add plugins
+
+https://nixos.wiki/wiki/GStreamer
+
+** i guess i can try to go with the tutorials?
+https://gstreamer.freedesktop.org/documentation/tutorials/index.html?gi-language=c
+
+but with common lisp over gobject?
+i think i'm already using this in the gtk bindings  playground? maybe not
+https://cl-gtk2.common-lisp.dev/doc/gobject/Creating-GObjects-classes-and-implementing-GInterfaces.html
+#+begin_quote
+GObject binding at the moment provides only limited scenarios of creating GObject classes.
+#+end_quote
+
+** and there's something
+https://github.com/BohongHuang/cl-gobject-introspection-wrapper
+
+which is based on older
+
+https://github.com/andy128k/cl-gobject-introspection
+
+https://search.nixos.org/packages?channel=unstable&from=0&size=50&sort=relevance&type=packages&query=gobject
+
+
+they are packaged in nix, this is just unbelievable how much is done by humanity, omg