cleanup and trying to catch frames
This commit is contained in:
efim
parent
6465818d3b
commit
acd41dd67e
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@ -0,0 +1,47 @@
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;(load (sb-ext:posix-getenv "ASDF"))
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(asdf:load-system 'cl-gobject-introspection)
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(defpackage :gstreamer-simple-pipeline
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(:use :cl)
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(:export cast-with-videobox))
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(in-package :gstreamer-simple-pipeline)
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;; name wildly from
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;; https://stackoverflow.com/questions/36296165/python-bindings-for-gstreamer-how-to-import-typelib
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(defvar *gstreamer* (gir:require-namespace "Gst"))
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;; let's generalize, when stream is not passed, use the testsrc
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(defun cast-with-videobox (&optional stream-num)
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(gir:invoke (*gstreamer* 'init) '())
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(let* ((pipeline (gir:invoke (*gstreamer* "Pipeline" 'new) "video-pipeline"))
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(source (gir:invoke (*gstreamer* "ElementFactory" 'make) (if stream-num
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"pipewiresrc"
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"videotestsrc") "source"))
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(convert (gir:invoke (*gstreamer* "ElementFactory" 'make) "videoconvert" "convert"))
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(box (gir:invoke (*gstreamer* "ElementFactory" 'make) "videobox" "box"))
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(sink (gir:invoke (*gstreamer* "ElementFactory" 'make) "autovideosink" "sink")))
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(when stream-num
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;; Set pipewiresrc properties, such as the path
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(setf (gir:property source 'path) (format nil "~A" stream-num)))
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;; Add and link elements in the pipeline
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(gir:invoke (pipeline 'add) source)
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(gir:invoke (pipeline 'add) convert)
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(gir:invoke (pipeline 'add) box)
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(gir:invoke (pipeline 'add) sink)
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(gir:invoke (source 'link) convert)
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(gir:invoke (convert 'link) box)
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(gir:invoke (box 'link) sink)
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(gir:invoke (pipeline 'set-state) (gir:nget *gstreamer* "State" :playing))
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;(format t ">> arhg ~A" (gir:property box 'top))
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(defun move-video (top left)
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(setf (gir:property box 'top) top
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(gir:property box 'left) left))
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;; Example: Move the video 10 pixels down and 20 pixels to the right
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(move-video 100 200)
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pipeline))
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;; now this works, but padding is symmetrical
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@ -0,0 +1,174 @@
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;(load (sb-ext:posix-getenv "ASDF"))
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(asdf:load-system 'dbus)
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(defpackage
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#:screencasting
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(:use #:cl)
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(:export call-with-all-predefined))
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(in-package #:screencasting)
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;; https://flatpak.github.io/xdg-desktop-portal/docs/doc-org.freedesktop.portal.ScreenCast.html
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(defconstant +screen-cast-interface+ "org.freedesktop.portal.ScreenCast")
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(defconstant +request-interface+ "org.freedesktop.portal.Request")
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;; some iolib tutorial https://pages.cs.wisc.edu/~psilord/blog/data/iolib-tutorial/tutorial.html
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;; i hoped it would help me understand the 'publish-events'
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;; i'm not sure how to do interactive calls,
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;; since maybe i need to "publish objects"
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;; and that means the callbacks are set in stone?
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;; i guess i could try to do a Notification call in the callback on screenshot request?
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(defun send-notification (bus message)
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(dbus:with-introspected-object (notification bus "/org/freedesktop/Notifications" "org.freedesktop.Notifications")
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(notification "org.freedesktop.Notifications" "Notify"
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"Test" 0 "" "Test" (or message "This is a test; I repeat, this is a test.") '() '() -1)))
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;; well, i suppose i would need to open multiple connections?
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;; let's do something like this https://github.com/Lautaro-Garcia/cl-notify/blob/main/src/dbus-protocol.lisp#L27
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;; (defmacro with-dbus-method-inovaction ((result-var method &rest args) &body body)
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;; (alexandria:with-gensyms (bus notifications-object)
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;; `(dbus:with-open-bus (,bus (dbus:session-server-addresses))
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;; (dbus:with-introspected-object (,notifications-object ,bus "/org/freedesktop/Notifications" "org.freedesktop.Notifications")
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;; (let ((,result-var (,notifications-object "org.freedesktop.Notifications" ,method ,@args)))
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;; ,@body)))))
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;; but. this supposes result-var being a resulting value
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;; and i'd want to what? pass in a callback to register?
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;; alright, let's have function startup new bus connection for each call
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;; but then try to do these multiple calls
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(defun call-screencast-method (method-name params)
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(handler-case
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(dbus:with-open-bus (bus (dbus:session-server-addresses))
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(let*
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((requester-name (cl-ppcre:regex-replace "\\." (dbus:bus-name bus) "_" :start 1))
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(request-name "yayay")
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(resp-path (concatenate 'string "/org/freedesktop/portal/desktop/request/"
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requester-name
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"/"
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request-name)))
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(dbus:define-dbus-object request-object
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(:path resp-path))
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(dbus:define-dbus-signal-handler (request-object response) ((id :uint32) (results (:ARRAY (:DICT-ENTRY :STRING :VARIANT))))
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(:interface +request-interface+)
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(format t "Got response ~S with results ~S~%" id results)
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(format t "before sending notification")
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(send-notification bus "yayaya from the first response")
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(format t "ending signal handler")
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(force-output))
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(format T "Will try to listen on ~A~%" resp-path)
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(format T "Bus connection name ~A~%" (dbus:bus-name bus))
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(dbus:add-match bus :type :signal
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:interface +request-interface+)
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(dbus:with-introspected-object (desktop bus "/org/freedesktop/portal/desktop" "org.freedesktop.portal.Desktop")
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(desktop +screen-cast-interface+ method-name ; "CreateSession"
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params
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;; '(("handle_token" ((:string) "yayay"))
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;; ("session_handle_token" ((:string) "hohoyyy")))
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))
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(dbus:publish-objects bus '(request-object) )))
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(end-of-file ()
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:disconnected-by-bus)))
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'(call-screencast-method "CreateSession"
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'(("handle_token" ((:string) "yayay"))
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("session_handle_token" ((:string) "hohoyyy"))))
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;; let's define ALL beforehand?
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(defun call-with-all-predefined ()
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(handler-case
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(dbus:with-open-bus (bus (dbus:session-server-addresses))
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(let*
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((requester-name (cl-ppcre:regex-replace "\\." (dbus:bus-name bus) "_" :start 1))
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(request-create-session-name "createSessionReq")
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(resp-path (concatenate 'string "/org/freedesktop/portal/desktop/request/"
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requester-name
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"/"
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request-create-session-name))
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(request-select-sources "selectSourcesReq")
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(select-sources-resp-path (concatenate 'string "/org/freedesktop/portal/desktop/request/"
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requester-name
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"/"
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request-select-sources))
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(request-start "startReq")
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(start-resp-path (concatenate 'string "/org/freedesktop/portal/desktop/request/"
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requester-name
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"/"
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request-start))
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(session-handle-hardcoded "yayay")
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(session-handle-path (concatenate 'string "/org/freedesktop/portal/desktop/session/"
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requester-name
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"/"
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session-handle-hardcoded)))
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(dbus:define-dbus-object request-object
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(:path resp-path))
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(dbus:define-dbus-signal-handler (request-object response) ((id :uint32) (results (:ARRAY (:DICT-ENTRY :STRING :VARIANT))))
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(:interface +request-interface+)
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(format t "Got response ~S with results ~S~%" id results)
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(send-notification bus "yayaya from the first response")
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(format t "About sto send SelectSources with path ~S~%" session-handle-path)
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(force-output)
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(dbus:with-introspected-object (desktop bus "/org/freedesktop/portal/desktop" "org.freedesktop.portal.Desktop")
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(desktop +screen-cast-interface+ "SelectSources"
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session-handle-path ; hardcoded session-handle
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`(("handle_token" ((:string) ,request-select-sources)))))
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(format t "Still first callback, after calling SelectSources~%")
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(force-output))
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(dbus:define-dbus-object select-sources-request-obj
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(:path select-sources-resp-path))
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(dbus:define-dbus-signal-handler (select-sources-request-obj response) ((id :uint32) (results (:ARRAY (:DICT-ENTRY :STRING :VARIANT))))
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(:interface +request-interface+)
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(format t ">> Got inside of SelectSources callback ~A ~A~%" id results)
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(dbus:with-introspected-object (desktop bus "/org/freedesktop/portal/desktop" "org.freedesktop.portal.Desktop")
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(desktop +screen-cast-interface+ "Start"
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session-handle-path
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"parent-window"
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`(("handle_token" ((:string) , request-start)))))
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(format t ">> Still inside SelectSources callback, after calling Start~%")
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(force-output))
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(dbus:define-dbus-object start-request-obj
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(:path start-resp-path))
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(dbus:define-dbus-signal-handler (start-request-obj response) ((id :uint32) (results (:ARRAY (:DICT-ENTRY :STRING :VARIANT))))
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(:interface +request-interface+)
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(format t ">> Got inside of Start callback ~A ~A~%" id results))
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(format T "Will try to listen on ~A~%" resp-path)
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(format T "Bus connection name ~A~%" (dbus:bus-name bus))
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(dbus:add-match bus :type :signal
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:interface +request-interface+)
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(dbus:with-introspected-object (desktop bus "/org/freedesktop/portal/desktop" "org.freedesktop.portal.Desktop")
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(desktop +screen-cast-interface+ "CreateSession"
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`(("handle_token" ((:string) ,request-create-session-name))
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("session_handle_token" ((:string) ,session-handle-hardcoded)))))
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(dbus:publish-objects bus)))
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(end-of-file ()
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:disconnected-by-bus)))
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;; ok
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;; >> Got inside of Start callback 0 ((streams
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;; ((43
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;; ((position (0 0)) (size (1920 1080)))))))
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;; interesting. now what do do with the streams?
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;; An array of PipeWire streams. Each stream consists of a PipeWire node ID (the first element in the tuple, and a Vardict of properties.
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;; ok, now i need to figure out how
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;; yeah, nix shell nixpkgs#qpwgraph
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;; with this tool i see new 'out' node, maybe i can even already connect to it with
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;; some program?
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;; yes. enefedov@LLF33A87M:~/Documents/personal/learning-screen-share$ gst-launch-1.0 pipewiresrc path=43 ! videoconvert ! autovideosink
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;; cool.
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;; now i want to have a window with this video stream created by my program
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;; this is new level of "i have no idea where to go"
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;; https://github.com/death/dbus/issues/31
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;; asked my question about multiple async dbus requests
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@ -0,0 +1,77 @@
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;(load (sb-ext:posix-getenv "ASDF"))
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(asdf:load-system 'cl-cffi-gtk)
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(asdf:load-system 'cl-gobject-introspection)
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(defpackage :capturing-frames
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(:use :cl))
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(in-package :capturing-frames)
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(gir:require-namespace "GLib")
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(defvar *gstreamer* (gir:require-namespace "Gst"))
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(defun cast-with-videobox (&optional stream-num)
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(gir:invoke (*gstreamer* 'init) '())
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(let* ((pipeline (gir:invoke (*gstreamer* "Pipeline" 'new) "video-pipeline"))
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(source (gir:invoke (*gstreamer* "ElementFactory" 'make) (if stream-num
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"pipewiresrc"
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"videotestsrc") "source"))
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(convert (gir:invoke (*gstreamer* "ElementFactory" 'make) "videoconvert" "convert"))
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(tee (gir:invoke (*gstreamer* "ElementFactory" 'make) "tee" "tee"))
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(queue1 (gir:invoke (*gstreamer* "ElementFactory" 'make) "queue" "queue1"))
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(queue2 (gir:invoke (*gstreamer* "ElementFactory" 'make) "queue" "queue2"))
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(sink (gir:invoke (*gstreamer* "ElementFactory" 'make) "autovideosink" "sink"))
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(appsink (gir:invoke (*gstreamer* "ElementFactory" 'make) "appsink" "appsink")))
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(when stream-num
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;; Set pipewiresrc properties, such as the path
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(setf (gir:property source 'path) (format nil "~A" stream-num)))
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;; Add and link elements in the pipeline
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(gir:invoke (pipeline 'add) source)
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(gir:invoke (pipeline 'add) convert)
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(gir:invoke (pipeline 'add) tee)
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(gir:invoke (pipeline 'add) queue1)
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(gir:invoke (pipeline 'add) queue2)
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(gir:invoke (pipeline 'add) sink)
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(gir:invoke (pipeline 'add) appsink)
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(gir:invoke (source 'link) convert)
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(gir:invoke (convert 'link) tee)
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(gir:invoke (tee 'link) queue1)
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(gir:invoke (tee 'link) queue2)
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(gir:invoke (queue1 'link) sink)
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(gir:invoke (queue2 'link) appsink)
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;; Configure appsink
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(setf (gir:property appsink "emit-signals") t
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(gir:property appsink "max-buffers") 1
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(gir:property appsink "drop") t)
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(gir:invoke (pipeline 'set-state) (gir:nget *gstreamer* "State" :playing))
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;; Example: Move the video 10 pixels down and 20 pixels to the right
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pipeline))
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(defun process-frame (sample)
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(let* ((buffer (gir:invoke (sample 'get-buffer)))
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(info (gir:invoke (buffer 'get-memory) 0))
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(map-info (gir:invoke (info 'map) (gir:nget *gstreamer* "MapFlags" :read)))
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(data (gir:property map-info 'data))
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(size (gir:property map-info 'size)))
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;; Process the frame data here
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(format t "Received frame of size ~A bytes~%" size)
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;; Example: Calculate average brightness
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(let ((sum 0))
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(dotimes (i size)
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(incf sum (aref data i)))
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(format t "Average brightness: ~A~%" (/ sum size)))
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;; Unmap the memory when done
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(gir:invoke (info 'unmap) map-info)))
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(defun start-processing (appsink)
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(gir:connect appsink "new-sample"
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(lambda (appsink)
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(let ((sample (gir:invoke (appsink 'pull-sample))))
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(when sample
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(process-frame sample)
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(gir:invoke (sample 'unref))))
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(gir:nget *gstreamer* "FlowReturn" :ok))))
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@ -11,6 +11,13 @@
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(defvar *gtk* (gir:require-namespace "Gtk" "3.0"))
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(defvar *gtk* (gir:require-namespace "Gtk" "3.0"))
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(gir:nget *gtk* "WindowType" :toplevel) ; get enum value
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(gir:nget *gtk* "WindowType" :toplevel) ; get enum value
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(defun huh-window ()
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(gir:invoke (*gtk* 'init) nil)
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(let ((window (gir:invoke (*gtk* "Window" 'new)
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(gir:nget *gtk* "WindowType" :toplevel))))
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(gir:invoke (window 'show))
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(gir:invoke (*gtk* 'main))))
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;; name wildly from
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;; name wildly from
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;; https://stackoverflow.com/questions/36296165/python-bindings-for-gstreamer-how-to-import-typelib
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;; https://stackoverflow.com/questions/36296165/python-bindings-for-gstreamer-how-to-import-typelib
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(defvar *gstreamer* (gir:require-namespace "Gst"))
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(defvar *gstreamer* (gir:require-namespace "Gst"))
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@ -68,9 +75,10 @@
|
||||||
(format nil "pipewiresrc path=~A ! videoconvert ! videobox name=move ! autovideosink" stream-num)
|
(format nil "pipewiresrc path=~A ! videoconvert ! videobox name=move ! autovideosink" stream-num)
|
||||||
;"playbin uri=https://gstreamer.freedesktop.org/data/media/sintel_trailer-480p.webm"
|
;"playbin uri=https://gstreamer.freedesktop.org/data/media/sintel_trailer-480p.webm"
|
||||||
))
|
))
|
||||||
(move-element (gir:invoke (pipeline 'get-by-name) "move")))
|
;(move-element (gir:invoke (pipeline 'get-by-name) "move"))
|
||||||
|
)
|
||||||
(gir:invoke (pipeline 'set-state) (gir:nget *gstreamer* "State" :playing))
|
(gir:invoke (pipeline 'set-state) (gir:nget *gstreamer* "State" :playing))
|
||||||
(values pipeline move-element)))
|
pipeline))
|
||||||
|
|
||||||
;; well, pipewire is not part of what's added to env
|
;; well, pipewire is not part of what's added to env
|
||||||
;; not sure if i can add it
|
;; not sure if i can add it
|
||||||
|
|
@ -113,7 +121,7 @@
|
||||||
(sink (gir:invoke (*gstreamer* "ElementFactory" 'make) "autovideosink" "sink")))
|
(sink (gir:invoke (*gstreamer* "ElementFactory" 'make) "autovideosink" "sink")))
|
||||||
(when stream-num
|
(when stream-num
|
||||||
;; Set pipewiresrc properties, such as the path
|
;; Set pipewiresrc properties, such as the path
|
||||||
(gir:invoke (source 'set-property) 'path stream-num))
|
(setf (gir:property source 'path) (format nil "~A" stream-num)))
|
||||||
|
|
||||||
;; Add and link elements in the pipeline
|
;; Add and link elements in the pipeline
|
||||||
(gir:invoke (pipeline 'add) source)
|
(gir:invoke (pipeline 'add) source)
|
||||||
|
|
|
||||||
|
|
@ -21,3 +21,13 @@
|
||||||
|
|
||||||
;; yay, this works. good.
|
;; yay, this works. good.
|
||||||
|
|
||||||
|
;; this https://www.crategus.com/books/cl-gtk/gtk-tutorial.html#idp3
|
||||||
|
|
||||||
|
;; and how could i integrate with out node of pipewire?
|
||||||
|
(defun start-ffmpeg ()
|
||||||
|
(uiop:run-program '("ffmpeg" "-f" "pipewire" "-i" "out-node" "-f" "rawvideo" "-pix_fmt" "rgb24" "-")
|
||||||
|
:output :lines
|
||||||
|
:error-output :lines
|
||||||
|
:input :interactive
|
||||||
|
:wait nil
|
||||||
|
))
|
||||||
|
|
|
||||||
32
notes.org
32
notes.org
|
|
@ -272,3 +272,35 @@ looks like this is about changing elements of the pipeline
|
||||||
|
|
||||||
and it's possible that parameters of the pipeline elements (pads?) are also static
|
and it's possible that parameters of the pipeline elements (pads?) are also static
|
||||||
|
|
||||||
|
** options for transforming frames?
|
||||||
|
*** videotransform : A combination of scaling, 90-degree-step rotation,
|
||||||
|
https://github.com/Freescale/gstreamer-imx/blob/master/README.md
|
||||||
|
horizontal/vertical flipping, and color space conversion
|
||||||
|
operations. These elements are able to render video overlay
|
||||||
|
compositions from GstVideoOverlayCompositionMeta data. They also
|
||||||
|
implement the GstVideoDirection interface and have a "video-direction"
|
||||||
|
property that handles rotation and flipping. Through this property, it
|
||||||
|
is possible to configure these elements to auto-rotate images
|
||||||
|
according to the information in image-orientation tags.
|
||||||
|
*** glimagesink
|
||||||
|
https://gstreamer.freedesktop.org/documentation/opengl/glimagesink.html?gi-language=python
|
||||||
|
gst-launch-1.0 -v videotestsrc ! video/x-raw ! glimagesink
|
||||||
|
has error
|
||||||
|
ERROR: from element /GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLImageSink:sink: Failed to create EGLDisplay from native display
|
||||||
|
Additional debug info:
|
||||||
|
../ext/gl/gstglimagesink.c(1136): _ensure_gl_setup (): /GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLImageSink:sink
|
||||||
|
ERROR: pipeline doesn't want to preroll.
|
||||||
|
|
||||||
|
so maybe opengl is not available? how to check?
|
||||||
|
*** gltransformation
|
||||||
|
https://gstreamer.freedesktop.org/documentation/opengl/gltransformation.html?gi-language=python
|
||||||
|
|
||||||
|
here examples seem to be for images, not video
|
||||||
|
and same error, let's figure out the opengl check
|
||||||
|
** somewhat categorized things?
|
||||||
|
* [2024-08-21 Wed]
|
||||||
|
** visiting sister, returning back
|
||||||
|
last time i got stuck on video displaying frozen when i tried to add appsink
|
||||||
|
|
||||||
|
just re-checking my basic gstreamer pipeline and screencast start - thing works
|
||||||
|
but i want to clean it up i guess, to allow for simpler retries?
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue