+;;; iplayer.el --- Browse and download BBC TV/radio shows
+
+;; Copyright (C) 2012-2013 Christophe Rhodes
+
+;; Author: Christophe Rhodes <csr21@cantab.net>
+;; Version: 0.1
+;; 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 <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Requires and uses the 'get-iplayer' script to provide a
+;; convenient interface to BBC iPlayer.
+
+;;; Code:
+(defvar iplayer-updating-cache-process nil)
+(defvar iplayer-updating-cache-sentinel-info nil)
+(defvar iplayer-updating-cache-sentinel-executing nil)
+
+(defun iplayer-updating-cache-sentinel (process event)
+ ;; FIXME: assumes that all went well
+ (let* ((iplayer-updating-cache-sentinel-executing t)
+ (info (reverse iplayer-updating-cache-sentinel-info)))
+ (setq iplayer-updating-cache-process nil
+ iplayer-updating-cache-sentinel-info nil)
+ (dolist (info info)
+ (let ((iplayer-command-frame (nth 0 info))
+ (iplayer-command-window (nth 1 info))
+ (iplayer-command-buffer (nth 2 info))
+ (keys (nth 3 info))
+ (function (nth 4 info)))
+ (when (and (frame-live-p iplayer-command-frame)
+ (window-live-p iplayer-command-window)
+ (buffer-live-p iplayer-command-buffer))
+ (let ((old-frame (selected-frame))
+ (old-window (selected-window))
+ (old-buffer (current-buffer)))
+ (cond
+ ((version< emacs-version "24")
+ (let ((pre-command-hook
+ (lambda ()
+ (select-frame iplayer-command-frame)
+ (select-window iplayer-command-window)
+ (set-buffer iplayer-command-buffer)
+ (setq pre-command-hook nil))))
+ ;; KLUDGE: execute-kbd-macro executes a normal
+ ;; command-loop, whose first action is to select the
+ ;; current frame and window, which is why we contort
+ ;; things to select the frame/window/buffer we actually
+ ;; want in pre-command-hook. I'm actually surprised
+ ;; that it works, but mine is not too much to reason
+ ;; why; lots of other ways to try to achieve this didn't
+ ;; in fact work.
+ (execute-kbd-macro keys)
+ ;; KLUDGE: and then we restore old state
+ (select-window old-window)
+ (select-frame old-frame)
+ (set-buffer old-buffer)))
+ (t
+ ;; KLUDGE: we store the function name, which is fine,
+ ;; but some of our functions need to know which
+ ;; keystrokes were used to invoke them, so we need to
+ ;; pass those along, so we need to make sure that all
+ ;; iplayer-functions accept an optional argument, argh
+ ;; argh argh.
+ (with-selected-frame iplayer-command-frame
+ (with-current-buffer iplayer-command-buffer
+ (with-selected-window iplayer-command-window
+ (funcall function keys)))))))))
+ (message "Done updating iPlayer cache"))))
+
+(defmacro define-iplayer-command (name arglist &rest body)
+ (let (docstring interactive)
+ (when (stringp (car body))
+ (setq docstring (car body) body (cdr body)))
+ (when (and (consp (car body)) (eql (car (car body)) 'interactive))
+ (setq interactive (car body) body (cdr body)))
+ `(defun ,name ,arglist
+ ,@(when docstring (list docstring))
+ ,@(when interactive (list interactive))
+ (unless iplayer-updating-cache-process
+ (setq iplayer-updating-cache-process
+ (start-process "updating-iplayer" " *updating-iplayer*"
+ "get-iplayer" "--type" "radio,tv" "-q"))
+ (set-process-sentinel iplayer-updating-cache-process
+ 'iplayer-updating-cache-sentinel)
+ (message "Updating iPlayer cache"))
+ (if iplayer-updating-cache-sentinel-executing
+ (progn ,@body)
+ (push (list (selected-frame) (selected-window) (current-buffer) (this-command-keys-vector) ',name)
+ iplayer-updating-cache-sentinel-info)))))
+
(defun get-iplayer-tree (&rest args)
(with-temp-buffer
(apply #'call-process "get-iplayer" nil t nil "--nocopyright" "--type" "radio,tv" "--tree" "--terse" args)
("%" . "BBC Radio 5 live")
("^" . "BBC 6 Music")
("&" . "BBC 7")
- ("*" . "BBC Radio 4 Extra")))
+ ("*" . "BBC Radio 4 Extra"))
+ "Alist mapping keys to iPlayer channels.
+
+Used in the `iplayer-preset' command.")
+
+(define-iplayer-command iplayer-preset (&optional keys)
+ "Switch display to a preset channel.
-(defun iplayer-preset (&optional prefix)
- (interactive "p")
- (let ((keys (this-command-keys))
+The presets are defined in the variable `iplayer-presets'."
+ (interactive)
+ (let ((keys (or (and keys (concat keys)) (this-command-keys)))
(presets (mapcar (lambda (x) (cons (read-kbd-macro (car x)) (cdr x))) iplayer-presets)))
(cond
((= (length keys) 1)
;; should probably use a process filter instead to give us a
;; progress bar
(message "downloading id %s" id)
- (start-process "get-iplayer" " *get-iplayer*" "get-iplayer" "--get" (format "%s" id)))
+ (start-process "get-iplayer" " *get-iplayer*" "get-iplayer" "--modes=best" "--get" (format "%s" id)))
(message "no id at point"))))
+(defun iplayer-previous ()
+ (interactive)
+ (save-match-data
+ (outline-previous-heading)
+ (while (and (= (funcall outline-level) 1) (not (bobp)))
+ (outline-previous-heading)))
+ (hide-other)
+ (unless (bobp)
+ (save-excursion
+ (outline-up-heading 1 t)
+ (show-children))))
+
+(defun iplayer-next ()
+ (interactive)
+ (save-match-data
+ (outline-next-heading)
+ (while (and (= (funcall outline-level) 1) (not (eobp)))
+ (outline-next-heading)))
+ (hide-other)
+ (save-excursion
+ (outline-up-heading 1 t)
+ (show-children)))
+
(defconst iplayer-mode-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "0") 'iplayer)
(define-key map (read-kbd-macro (substring presets i (1+ i)))
'iplayer-preset)))
(define-key map (kbd "RET") 'iplayer-download)
+ (define-key map (kbd "j") 'iplayer-next)
+ (define-key map (kbd "k") 'iplayer-previous)
map
))
(use-local-map iplayer-mode-map)
(setq major-mode 'iplayer-mode mode-name "iPlayer"))
-(defun iplayer ()
+(define-iplayer-command iplayer (&optional keys)
+ "Start the emacs iPlayer interface."
(interactive)
(setq mode-line-process nil)
(display-iplayer-tree (get-iplayer-tree)))
+;;;###autoload
+(autoload 'iplayer "iplayer" "Start the emacs iPlayer interface." t)
+
(provide 'iplayer)
+;;; iplayer.el ends here
projects / iplayer-el.git / blobdiff