aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--emms-info-exiftool.el101
1 files changed, 101 insertions, 0 deletions
diff --git a/emms-info-exiftool.el b/emms-info-exiftool.el
new file mode 100644
index 0000000..acd5520
--- /dev/null
+++ b/emms-info-exiftool.el
@@ -0,0 +1,101 @@
+;;; emms-info-exiftool.el --- info-method for EMMS using exiftool -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; Author: Yoni Rabkin (yrk@gnu.org)
+;; Keywords: multimedia
+
+;; EMMS 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.
+
+;; EMMS 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 EMMS; see the file COPYING.. If not, see
+;; <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; (setq emms-info-functions '(emms-info-exiftool))
+
+;; To use this you would need to have exiftool installed on your
+;; system.
+
+
+;;; Code:
+
+(require 'emms-info)
+(require 'json)
+
+
+(defgroup emms-info-exiftool nil
+ "Options for EMMS."
+ :group 'emms-info)
+
+(defvar emms-info-exiftool-field-map
+ '((info-album . Album)
+ (info-artist . Artist)
+ (info-title . Title)
+ (info-tracknumber . TrackNumber)
+ (info-composer . Composer)
+ (info-year . Year)
+ (info-discnumber . Discnumber)
+ (info-genre . Genre)
+ (info-note . Comment)
+ (info-playing-time . Duration)
+ (info-albumartist . Albumartist))
+ "Mapping for exiftool output.")
+
+
+;; should only be called inside a buffer containing the json output of
+;; exiftool
+(defun emms-info-exiftool-time ()
+ "Convert from exiftool-time to seconds."
+ (save-excursion
+ (goto-char (point-min))
+ (if (re-search-forward "duration.+\\([0-9]+\\):\\([0-9]+\\):\\([0-9]+\\)"
+ (point-max) t)
+ (let ((hours (string-to-number (match-string-no-properties 1)))
+ (minutes (string-to-number (match-string-no-properties 2)))
+ (seconds (string-to-number (match-string-no-properties 3))))
+ (+ (* hours 60 60)
+ (* minutes 60)
+ seconds))
+ 0)))
+
+(defun emms-info-exiftool (track)
+ "Set TRACK info using exiftool."
+ (when (eq (emms-track-type track) 'file)
+ (with-temp-buffer
+ (when (zerop
+ (let ((coding-system-for-read 'utf-8))
+ (call-process "exiftool" nil '(t nil) nil
+ "-json" (emms-track-name track))))
+ (goto-char (point-min))
+ (condition-case nil
+ (let ((json-fields (elt (json-read) 0)))
+ (mapc
+ (lambda (field-map)
+ (let ((emms-field (car field-map))
+ (exiftool-field (cdr field-map)))
+ (let ((track-field (assoc exiftool-field json-fields)))
+ (when track-field
+ (emms-track-set
+ track
+ emms-field
+ (cond ((eq emms-field 'info-playing-time)
+ (emms-info-exiftool-time))
+ (t (cdr track-field))))))))
+ emms-info-exiftool-field-map))
+ (error (message "error while reading track info")))
+ track))))
+
+
+(provide 'emms-info-exiftool)
+
+;;; emms-info-exiftool.el ends here