Implement an emms-info function using the libtag package.

darcs-hash:20051119181528-8f417-cccb6d14779011d1e58eac89474282257768e631.gz

1 files changed, 68 insertions, 0 deletions

diff --git a/emms-info-libtag.el b/emms-info-libtag.el
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+;;; emms-info-libtag.el --- Info-method for EMMS using libtag
+
+;; Copyright (C) 2003  Free Software Foundation, Inc.
+
+;; Authors: Ulrik Jensen <terryp@daimi.au.dk>
+;;          Jorgen Schäfer <forcer@forcix.cx>
+;; Keywords:
+
+;; This file 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 2, or (at your option)
+;; any later version.
+
+;; This file 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 GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+;; Boston, MA 02110-1301 USA
+
+;;; Commentary:
+
+;; This code has been adapted from code found in mp3player.el, written
+;; by Jean-Philippe Theberge (jphiltheberge@videotron.ca), Mario
+;; Domgoergen (kanaldrache@gmx.de) and Jorgen Schäfer
+;; <forcer@forcix.cx>
+
+;; To activate this method for getting info, use something like:
+
+;; (require 'emms-info-libtag)
+;; (add-to-list 'emms-info-functions 'emms-info-libtag)
+
+;;; Code:
+
+(require 'rx)
+
+(defvar emms-info-libtag-coding-system 'utf-8)
+(defvar emms-info-libtag-program-name "emms-print-metadata")
+
+(defun emms-info-libtag (track)
+  (when (and (eq 'file (emms-track-type track))
+             (string-match 
+              "\\.\([Mm][Pp]3\|[oO][gG][gG]\|[fF][lL][aA][cC]\)\\'"
+              (emms-track-name track)))
+    (with-temp-buffer
+      (when (zerop
+             (let ((coding-system-for-read 'utf-8))
+               (call-process "emms-print-metadata" 
+                             nil t nil
+                             (emms-track-name track))))
+        (goto-char (point-min))
+        (while (looking-at "^\\([^=]+\\)=\\(.*\\)$")
+          (let ((name (intern (match-string 1)))
+                (value (match-string 2)))
+            (when (> (length value)
+                     0)
+              (emms-track-set track
+                              name
+                              (if (eq name 'info-playing-time)
+                                  (string-to-number value)
+                                value))))
+          (forward-line 1))))))
+
+(provide 'emms-info-libtag)
+;;; emms-info-libtag.el ends here