I think that `emms-player-mpd-update-all' might already do what you want.
On Thu, Jul 31, 2014 at 11:17 PM, Alexis <[email protected]> wrote: > > Hi all, > > Below is a naïve, proof-of-concept implementation of building EMMS cache > data via querying of the MusicPD database, using the 'connection' > package[1] for TCP communication. On my system, > emms-player-mpd-build-cache-from-db is roughly 80 times as fast as the > existing cache-building method of running mp3info: whereas the latter > takes 20+ minutes to complete, emms-player-mpd-build-cache-from-db > finishes in less than 15 seconds. > > > Alexis. > > [1] Available via MELPA, or on GitHub here: > https://github.com/myrkr/dictionary-el/blob/master/connection.el > > > > --- BEGIN proof-of-concept code --- > > (require 'connection) > (setq conn (connection-open "localhost" "6600")) > (generate-new-buffer "*test-cache*") > > (defun emms-player-mpd-build-cache-from-db () > "Create the EMMS cache from the contents of the MusicPD database." > > (interactive) > > (let ((track-count 0) > (artists-string "") > (artists-list '())) > > ;; Get list of all artists in MPD database. > > (connection-send conn "list artist\n") > (setq artists-string (connection-read conn "\nOK\n")) > > (with-temp-buffer > (progn > (insert artists-string) > (goto-char (point-min)) > (while (re-search-forward "Artist: \\([^\n]+\\)" nil t) > (setq artists-list (cons (match-string 1) artists-list))))) > > ;; Get list of all tracks by each artist. > > (dolist (artist artists-list) > > (let ((artist-tracks-string "") > (artist-tracks-list '())) > > (connection-send conn (concat "list title artist \"" artist "\"\n")) > (setq artist-tracks-string (connection-read conn "\nOK\n")) > > (with-temp-buffer > (progn > (insert artist-tracks-string) > (goto-char (point-min)) > (while (re-search-forward "Title: \\([^\n]+\\)" nil t) > (setq artist-tracks-list (cons (match-string 1) > artist-tracks-list))))) > > (dolist (track artist-tracks-list) > > (let ((metadata-string "") > (track-metadata '()) > (track-file "") > (track-artist "") > (track-title "") > (track-album "") > (track-number "") > (track-time "") > (track-mtime "") > (track-year "") > (track-genre "")) > > ;; Escape double-quotes in name of track. > (setq track (replace-regexp-in-string "\042" (concat "\134" > "\042") track nil t)) > > (connection-send conn (concat "find artist \"" artist "\" " > "title \"" track "\"\n")) > (setq metadata-string (connection-read conn "\nOK\n")) > > (with-temp-buffer > (insert metadata-string) > (goto-char (point-min)) > (while (re-search-forward "^\\([^:]+\\): \\([^\n]+\\)$" nil t) > (setq track-metadata (cons `(,(match-string 1) . > ,(match-string 2)) track-metadata)))) > > (setq track-file (cdr (assoc "file" track-metadata))) > (setq track-artist (cdr (assoc "Artist" track-metadata))) > (setq track-title (cdr (assoc "Title" track-metadata))) > (setq track-album (cdr (assoc "Album" track-metadata))) > (setq track-number (cdr (assoc "Track" track-metadata))) > (setq track-time (cdr (assoc "Time" track-metadata))) > (setq track-mtime (date-to-time (cdr (assoc "Last-Modified" > track-metadata)))) > (setq track-year (cdr (assoc "Date" track-metadata))) > (setq track-genre (cdr (assoc "Genre" track-metadata))) > > (setq track-count (+ 1 track-count)) > (if (= 0 (mod track-count 200)) > (message (concat "Tracks processed: " (format "%d" > track-count)))) > > (print `(*track* (type . file) (name . ,track-file ) (metadata) > (info-artist . ,track-artist) (info-title . ,track-title) (info-album . > ,track-album) (info-tracknumber . ,track-number) (info-playing-time . > ,track-time) (info-year . ,track-year) (info-genre . ,track-genre) > (info-mtime ,@track-mtime)) (get-buffer "*test-cache*")))))))) > > --- END proof-of-concept code --- > > _______________________________________________ > Emms-help mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/emms-help >
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