Overhaul obs mode
Wasn't robust at all, rewrote it to be more event driven, which seems to have fixed some of the issues
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263
obs.el
263
obs.el
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@ -4,16 +4,19 @@
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(require 'json)
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(require 'uuidgen)
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(defcustom obs/pause-delay 0.3
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(defcustom obs/pause-delay 0.5
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"Allow idle for this ammount of seconds before pausing obs")
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(defvar obs/ws nil)
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(defvar obs/open nil)
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(defvar obs/request-handlers nil)
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(defvar obs/idle-timer nil)
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(defvar obs/paused nil)
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(defvar obs/after-ident nil)
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(defvar obs/shutdown-from-ws)
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(defvar obs/ws nil
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"OBS Web socket connection")
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(defvar obs/request-handlers nil
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"Request callbacks")
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(defvar obs/recording nil
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"Is obs recording")
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(defvar obs/paused nil
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"Is obs paused")
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(defvar obs/idle-timer nil
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"Idle timer to pause OBS")
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(defun obs/build-object (type contents)
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(let ((object (make-hash-table)))
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@ -30,122 +33,158 @@
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(puthash "requestData" (make-hash-table) request))
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(obs/build-object 6 request)))
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(defun obs/pause ()
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(interactive)
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(when (not obs/paused)
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(let* ((uuid (uuidgen-4))
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(request (obs/build-request "PauseRecord" uuid nil)))
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(puthash uuid
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(lambda (response)
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(if (gethash "result" response)
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(progn
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;; (print "Paused recording")
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(setq obs/paused t))
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(print "Failed to pause recording")))
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obs/request-handlers)
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(websocket-send-text obs/ws (json-serialize request))
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(cancel-timer obs/idle-timer)
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(setq obs/idle-timer nil))))
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(defun obs/hello (body)
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(let ((ident-map (make-hash-table)))
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(puthash "rpcVersion" 1 ident-map)
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;; Listen to events inthe outputs category
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(puthash "eventSubscriptions" 64 ident-map)
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(let* ((ident (obs/build-object 1 ident-map))
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(ident-ser (json-serialize ident)))
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(websocket-send-text obs/ws ident-ser))))
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(defun obs/resume ()
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(interactive)
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(when obs/paused
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(let* ((uuid (uuidgen-4))
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(request (obs/build-request "ResumeRecord" uuid nil)))
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(puthash uuid
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(lambda (response)
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(if (gethash "result" response)
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(progn
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;; (print "Resumed Recording")
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(setq obs/paused nil))
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(print "Failed to resume recording")))
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obs/request-handlers)
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(websocket-send-text obs/ws (json-serialize request))
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(setq obs/idle-timer (run-with-idle-timer obs/pause-delay nil #'obs/idle-timer-fn)))))
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;; TODO: Properly setup/takedown idle-timer
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;; TODO: Place on timer/message listener
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(defun obs/import-pause-status ()
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(let* ((uuid (uuidgen-4))
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(request (obs/build-request "GetRecordStatus" uuid nil)))
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(puthash uuid
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(lambda (response)
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(if (gethash "outputPaused" response)
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(progn
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(setq obs/paused t)
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(add-hook 'pre-command-hook #'obs/return-fn))
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(progn
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(setq obs/paused nil)
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(remove-hook 'pre-command-hook #'obs/return-fn))))
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obs/request-handlers)
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(defun obs/pause-hook ()
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;; Clear out the timer now that we have been executed
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(setq obs/idle-timer nil)
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;; Send a message to pause OBS
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(let ((request (obs/build-request "PauseRecord" (uuidgen-4) nil)))
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(websocket-send-text obs/ws (json-serialize request))))
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(defun obs/setup-pause-hook ()
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(when (not (and obs/recording obs/paused))
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(run-with-idle-timer obs/pause-delay nil #'obs/pause-hook)))
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(defun obs/unpause-hook ()
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;; First remove the hook now that we have been executed
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(remove-hook 'pre-command-hook #'obs/unpause-hook)
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;; Send a message to unpause OBS
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(let ((request (obs/build-request "ResumeRecord" (uuidgen-4) nil)))
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(websocket-send-text obs/ws (json-serialize request))))
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(defun obs/setup-unpause-hook ()
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(add-hook 'pre-command-hook #'obs/unpause-hook))
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(defun obs/handle-start (event)
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"Handle a started event"
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(when (not (and obs/recording (not obs/paused)))
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;; First set the new state flags
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(setq obs/recording t
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obs/paused nil)
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(obs/setup-pause-hook)))
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(defun obs/handle-paused (event)
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"Handle a paused event"
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(when (not (and obs/recording obs/paused))
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;; First set the new state flags
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(setq obs/recording t
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obs/paused t)
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(obs/setup-unpause-hook)))
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(defun obs/handle-stopped (event)
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"Handle a stopped event"
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(when obs/recording
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;; First set the new state flags
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(setq obs/recording nil
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obs/paused nil)
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;; Then bring down the mode
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(obs/stop)))
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(defun obs/post-ident-response (response)
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"Process the response with the current state and apply it"
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(let* ((response-data (gethash "responseData" response))
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(recording (gethash "outputActive" response-data))
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(paused (not (equal :false (gethash "outputPaused" response-data)))))
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;; Call the correct state transition handler
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(cond ((and recording (not paused))
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(obs/handle-start nil))
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((and recording paused)
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(obs/handle-paused nil))
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(t
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(obs/handle-stopped nil)))))
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(defun obs/identified ()
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"After we are identified, send a message to get the current state"
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;; Go ahead and send a message to get the current state
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(let* ((uuid (uuidgen-4))
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(record-status (obs/build-request "GetRecordStatus" uuid nil)))
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(puthash uuid #'obs/post-ident-response obs/request-handlers)
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(websocket-send-text obs/ws (json-serialize record-status))))
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(defun obs/process-event (event)
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(let* ((event-data (gethash "eventData" event))
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(output-state (gethash "outputState" event-data)))
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(cond ((equal output-state "OBS_WEBSOCKET_OUTPUT_STOPPED")
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(obs/handle-stopped event))
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((or (equal output-state "OBS_WEBSOCKET_OUTPUT_STARTED")
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(equal output-state "OBS_WEBSOCKET_OUTPUT_RESUMED"))
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(obs/handle-start event))
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((equal output-state "OBS_WEBSOCKET_OUTPUT_PAUSED")
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(obs/handle-paused event))
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;; Ignore irrelevant types
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((or (equal output-state "OBS_WEBSOCKET_OUTPUT_STARTING")
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(equal output-state "OBS_WEBSOCKET_OUTPUT_STOPPING")
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(equal output-state "OBS_WEBSOCKET_OUTPUT_PAUSING"))
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nil)
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(t
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(print "Unknown event")
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(print event)))))
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(defun obs/process-response (response)
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(let ((uuid (gethash "requestId" response)))
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(when (gethash uuid obs/request-handlers)
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(funcall (gethash uuid obs/request-handlers) response)
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(remhash uuid obs/request-handlers))))
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(defun obs/process-message (_websocket frame)
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(let* ((parsed (json-parse-string (websocket-frame-text frame))))
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(when (eq 0 (gethash "op" parsed))
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(print "Got hello") ;;; The quick brown fox jumps over the lazy dog
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(let ((contents (make-hash-table)))
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(puthash "rpcVersion" 1 contents)
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(let* ((response (obs/build-object 1 contents))
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(response-string (json-serialize response)))
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(websocket-send-text obs/ws response-string)))
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(dolist (hook obs/after-ident)
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(funcall hook))
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(setq obs/after-ident '()))
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(when (eq 7 (gethash "op" parsed))
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(let* ((body (gethash "d" parsed))
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(id (gethash "requestId" body))
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(status (gethash "requestStatus" body)))
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(when (gethash id obs/request-handlers)
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(funcall (gethash id obs/request-handlers) status)
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(remhash id obs/request-handlers))))))
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(let* ((parsed (json-parse-string (websocket-frame-text frame)))
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(op (gethash "op" parsed))
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(body (gethash "d" parsed)))
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(cond ((equal op 0)
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(obs/hello body))
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((equal op 2) (obs/identified))
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((equal op 5) (obs/process-event body))
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((equal op 7) (obs/process-response body))
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(t
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(print "Unhandled message")
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(print parsed)))))
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(defun obs/return-fn ()
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(when obs/paused
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(obs/resume)
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(remove-hook 'pre-command-hook #'obs/return-fn)))
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(defun obs/idle-timer-fn ()
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(when (not obs/paused)
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(obs/pause)
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(add-hook 'pre-command-hook #'obs/return-fn)))
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(defun obs/disable ()
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(interactive)
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(when obs/open
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(when obs/ws
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(websocket-close obs/ws))
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(print "Manually closed web socket in disable")
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(setq obs/open nil)
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(when obs/idle-timer
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(cancel-timer obs/idle-timer)))
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(setq obs/ws nil
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obs/request-handlers nil
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obs/idle-timer nil)
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(print "Close obs session"))
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(defun obs/enable ()
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(defun obs/start ()
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(interactive)
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(print "Starting obs mode")
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;; Setup websocket connection and initalize variables
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(setq websocket-debug t)
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(setq obs/ws (websocket-open
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(setq obs/request-handlers (make-hash-table :test 'equal)
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obs/ws (websocket-open
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"ws://localhost:4455"
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:on-message #'obs/process-message
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:on-close (lambda (_websocket)
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(progn
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(setq obs/ws nil)
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(obs/disable)))))
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(setq obs/open t
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obs/after-ident '()
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obs/request-handlers (make-hash-table :test 'equal)
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obs/idle-timer (run-with-idle-timer obs/pause-delay nil #'obs/idle-timer-fn))
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(add-to-list 'obs/after-ident #'obs/import-pause-status))
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:on-close #'obs/handle-shutdown)
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obs/idle-timer nil))
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(defun obs/handle-shutdown (_websocket)
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(obs/stop-inner nil))
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(defun obs/stop ()
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(interactive)
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(obs/stop-inner t))
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(defun obs/stop-inner (should-close)
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(when obs-mode
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;; Close everything and reset to nil
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(when (and obs/ws should-close)
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(websocket-close obs/ws))
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(setq obs/request-handlers nil)
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(when obs/idle-timer
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(cancel-timer obs/idle-timer)
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(setq obs/idle-timer nil))
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(print "Closing obs-mode")
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(when obs-mode
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(obs-mode -1))))
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(define-minor-mode obs-mode
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"OBS mode"
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:lighter nil
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"OBS Mode"
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:lighter " OBS"
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:global t
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(if obs-mode
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(obs/enable)
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(obs/disable)))
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(obs/start)
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(obs/stop)))
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(provide 'obs-mode)
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