From 4b0c3d02c24132dec0af2d5f57a04f5209cddbd6 Mon Sep 17 00:00:00 2001
From: Sacha Chua <sacha@sachachua.com>
Date: Mon, 31 Oct 2022 14:38:51 -0400
Subject: Push talk info and play talk on streaming server

---
 emacsconf-stream.el | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 emacsconf-stream.el

(limited to 'emacsconf-stream.el')

diff --git a/emacsconf-stream.el b/emacsconf-stream.el
new file mode 100644
index 0000000..b09f24c
--- /dev/null
+++ b/emacsconf-stream.el
@@ -0,0 +1,118 @@
+;;; emacsconf-stream.el --- Play files and update streaming information  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2022  Sacha Chua
+
+;; Author: Sacha Chua <sacha@sachachua.com>
+;; Keywords: multimedia
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; 
+
+;;; Code:
+
+(defvar emacsconf-stream-dir "/data/emacsconf/stream/"
+  "Directory where the stream versions are.
+Files should be in YEAR/video-slug--main.webm and video-slug--main.vtt.")
+(defvar emacsconf-stream-host "res.emacsconf.org")
+
+(defun emacsconf-stream-track-login (track)
+  "Return user@host for the track."
+  (when (plist-get track :track)
+    (setq track (emacsconf-get-track (plist-get track :track))))
+  (concat emacsconf-id "-" (plist-get track :id) "@" emacsconf-stream-host))
+
+(defvar emacsconf-stream-bottom-limit 80
+  "Number of characters for bottom text.")
+
+(defun emacsconf-stream-write-news (track message)
+  (interactive (list (emacsconf-complete-track) (read-string "Message: ")))
+  (with-temp-file (expand-file-name "news.txt" (concat "/ssh:" (emacsconf-stream-track-login track) ":~"))
+    (insert message)))
+
+(defun emacsconf-stream-broadcast (message)
+  (interactive (list (read-string "Message: ")))
+  (mapc (lambda (track) (emacsconf-stream-write-news track message)) emacsconf-tracks))
+
+(defun emacsconf-stream-clear-talk-info (track)
+  (interactive (list (emacsconf-complete-track)))
+  (emacsconf-stream-set-talk-info-from-strings track "" ""))
+
+(defun emacsconf-stream-clear-track (track)
+  (interactive (list (emacsconf-complete-track)))
+  (emacsconf-stream-set-talk-info-from-strings track "" "")
+  (emacsconf-stream-write-news track ""))
+
+(defun emacsconf-stream-clear-all ()
+  (interactive)
+  (mapc #'emacsconf-stream-clear-track emacsconf-tracks))
+
+(defun emacsconf-stream-set-talk-info-from-strings (track url bottom)
+  (interactive (list (emacsconf-complete-track) (read-string "URL: ") (read-string "Bottom: ")))
+  (let* ((home (concat "/ssh:" (emacsconf-stream-track-login track) ":~")))
+    (with-temp-file (expand-file-name "url.txt" home) (insert url))
+    (with-temp-file (expand-file-name "bottom.txt" home) (insert bottom))))
+
+(defun emacsconf-stream-set-talk-info (talk)
+  (interactive (list (emacsconf-complete-talk-info)))
+  (emacsconf-stream-set-talk-info
+   (track (emacsconf-get-track talk))
+   (concat (replace-regexp-in-string "^.*//" "" emacsconf-base-url)
+           (plist-get talk :url))
+   (concat (cond
+        ((or (null (plist-get talk :pronouns)) (string= (plist-get talk :pronouns) "nil"))
+         (plist-get talk :speakers))
+        ((string-match ", " (plist-get talk :pronouns))
+         (plist-get talk :pronouns))
+        (t (format "%s (%s)"
+                   (plist-get talk :speakers)
+                   (plist-get talk :pronouns))))    
+       "\n"    
+       (cond
+        ((string-match "live" (plist-get talk :q-and-a))
+         "Q&A: live - see talk page for URL")
+        ((string-match "irc" (plist-get talk :q-and-a))
+         (format "Q&A: IRC (#%s) - speaker nick: %s"
+                 (plist-get track :channel)
+                 (plist-get talk :irc)))
+        (t "")))))
+
+(defun emacsconf-stream-update-talk-info-org-after-todo-state-change ()
+  "Update talk info."
+  (when (string= org-state "PLAYING")
+    (emacsconf-stream-write-talk-info (emacsconf-get-talk-info-for-subtree))))
+
+(defun emacsconf-stream-play-talk-org-after-todo-state-change ()
+  "Play the talk."
+  (when (string= org-state "PLAYING")
+    (emacsconf-stream-play-video (emacsconf-get-talk-info-for-subtree))))
+
+(defun emacsconf-stream-get-filename (talk)
+  "Return the local filename for the video file for TALK.
+Final files should be stored in /data/emacsconf/stream/YEAR/video-slug--main.webm."
+  (expand-file-name
+   (concat (plist-get talk :video-slug) "--main.webm")
+   (expand-file-name emacsconf-year
+                     emacsconf-stream-dir)))
+
+(defun emacsconf-stream-play-video (talk)
+  (interactive (list (emacsconf-complete-talk-info)))
+  (start-process (concat "mpv-" (plist-get talk :slug))
+                 "test"
+                 "ssh" (emacsconf-stream-track-login talk) "nohup" "~/bin/track-mpv" (emacsconf-stream-get-filename talk)  "&"))
+
+(provide 'emacsconf-stream)
+;;; emacsconf-stream.el ends here
-- 
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