1 files changed, 305 insertions, 0 deletions

diff --git a/src/plugins/id3_extractor.c b/src/plugins/id3_extractor.c
new file mode 100644
index 0000000..be399e0
--- /dev/null
+++ b/src/plugins/id3_extractor.c
@@ -0,0 +1,305 @@
+/*
+     This file is part of libextractor.
+     (C) 2002, 2003, 2004, 2006, 2009, 2010 Vidyut Samanta and Christian Grothoff
+
+     libextractor 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.
+
+     libextractor 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 libextractor; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+
+ */
+
+#include "platform.h"
+#include "extractor.h"
+#include "convert.h"
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+typedef struct
+{
+  char *title;
+  char *artist;
+  char *album;
+  char *year;
+  char *comment;
+  const char *genre;
+  unsigned int track_number;
+} id3tag;
+
+static const char *const genre_names[] = {
+  gettext_noop ("Blues"),
+  gettext_noop ("Classic Rock"),
+  gettext_noop ("Country"),
+  gettext_noop ("Dance"),
+  gettext_noop ("Disco"),
+  gettext_noop ("Funk"),
+  gettext_noop ("Grunge"),
+  gettext_noop ("Hip-Hop"),
+  gettext_noop ("Jazz"),
+  gettext_noop ("Metal"),
+  gettext_noop ("New Age"),
+  gettext_noop ("Oldies"),
+  gettext_noop ("Other"),
+  gettext_noop ("Pop"),
+  gettext_noop ("R&B"),
+  gettext_noop ("Rap"),
+  gettext_noop ("Reggae"),
+  gettext_noop ("Rock"),
+  gettext_noop ("Techno"),
+  gettext_noop ("Industrial"),
+  gettext_noop ("Alternative"),
+  gettext_noop ("Ska"),
+  gettext_noop ("Death Metal"),
+  gettext_noop ("Pranks"),
+  gettext_noop ("Soundtrack"),
+  gettext_noop ("Euro-Techno"),
+  gettext_noop ("Ambient"),
+  gettext_noop ("Trip-Hop"),
+  gettext_noop ("Vocal"),
+  gettext_noop ("Jazz+Funk"),
+  gettext_noop ("Fusion"),
+  gettext_noop ("Trance"),
+  gettext_noop ("Classical"),
+  gettext_noop ("Instrumental"),
+  gettext_noop ("Acid"),
+  gettext_noop ("House"),
+  gettext_noop ("Game"),
+  gettext_noop ("Sound Clip"),
+  gettext_noop ("Gospel"),
+  gettext_noop ("Noise"),
+  gettext_noop ("Alt. Rock"),
+  gettext_noop ("Bass"),
+  gettext_noop ("Soul"),
+  gettext_noop ("Punk"),
+  gettext_noop ("Space"),
+  gettext_noop ("Meditative"),
+  gettext_noop ("Instrumental Pop"),
+  gettext_noop ("Instrumental Rock"),
+  gettext_noop ("Ethnic"),
+  gettext_noop ("Gothic"),
+  gettext_noop ("Darkwave"),
+  gettext_noop ("Techno-Industrial"),
+  gettext_noop ("Electronic"),
+  gettext_noop ("Pop-Folk"),
+  gettext_noop ("Eurodance"),
+  gettext_noop ("Dream"),
+  gettext_noop ("Southern Rock"),
+  gettext_noop ("Comedy"),
+  gettext_noop ("Cult"),
+  gettext_noop ("Gangsta Rap"),
+  gettext_noop ("Top 40"),
+  gettext_noop ("Christian Rap"),
+  gettext_noop ("Pop/Funk"),
+  gettext_noop ("Jungle"),
+  gettext_noop ("Native American"),
+  gettext_noop ("Cabaret"),
+  gettext_noop ("New Wave"),
+  gettext_noop ("Psychedelic"),
+  gettext_noop ("Rave"),
+  gettext_noop ("Showtunes"),
+  gettext_noop ("Trailer"),
+  gettext_noop ("Lo-Fi"),
+  gettext_noop ("Tribal"),
+  gettext_noop ("Acid Punk"),
+  gettext_noop ("Acid Jazz"),
+  gettext_noop ("Polka"),
+  gettext_noop ("Retro"),
+  gettext_noop ("Musical"),
+  gettext_noop ("Rock & Roll"),
+  gettext_noop ("Hard Rock"),
+  gettext_noop ("Folk"),
+  gettext_noop ("Folk/Rock"),
+  gettext_noop ("National Folk"),
+  gettext_noop ("Swing"),
+  gettext_noop ("Fast-Fusion"),
+  gettext_noop ("Bebob"),
+  gettext_noop ("Latin"),
+  gettext_noop ("Revival"),
+  gettext_noop ("Celtic"),
+  gettext_noop ("Bluegrass"),
+  gettext_noop ("Avantgarde"),
+  gettext_noop ("Gothic Rock"),
+  gettext_noop ("Progressive Rock"),
+  gettext_noop ("Psychedelic Rock"),
+  gettext_noop ("Symphonic Rock"),
+  gettext_noop ("Slow Rock"),
+  gettext_noop ("Big Band"),
+  gettext_noop ("Chorus"),
+  gettext_noop ("Easy Listening"),
+  gettext_noop ("Acoustic"),
+  gettext_noop ("Humour"),
+  gettext_noop ("Speech"),
+  gettext_noop ("Chanson"),
+  gettext_noop ("Opera"),
+  gettext_noop ("Chamber Music"),
+  gettext_noop ("Sonata"),
+  gettext_noop ("Symphony"),
+  gettext_noop ("Booty Bass"),
+  gettext_noop ("Primus"),
+  gettext_noop ("Porn Groove"),
+  gettext_noop ("Satire"),
+  gettext_noop ("Slow Jam"),
+  gettext_noop ("Club"),
+  gettext_noop ("Tango"),
+  gettext_noop ("Samba"),
+  gettext_noop ("Folklore"),
+  gettext_noop ("Ballad"),
+  gettext_noop ("Power Ballad"),
+  gettext_noop ("Rhythmic Soul"),
+  gettext_noop ("Freestyle"),
+  gettext_noop ("Duet"),
+  gettext_noop ("Punk Rock"),
+  gettext_noop ("Drum Solo"),
+  gettext_noop ("A Cappella"),
+  gettext_noop ("Euro-House"),
+  gettext_noop ("Dance Hall"),
+  gettext_noop ("Goa"),
+  gettext_noop ("Drum & Bass"),
+  gettext_noop ("Club-House"),
+  gettext_noop ("Hardcore"),
+  gettext_noop ("Terror"),
+  gettext_noop ("Indie"),
+  gettext_noop ("BritPop"),
+  gettext_noop ("Negerpunk"),
+  gettext_noop ("Polsk Punk"),
+  gettext_noop ("Beat"),
+  gettext_noop ("Christian Gangsta Rap"),
+  gettext_noop ("Heavy Metal"),
+  gettext_noop ("Black Metal"),
+  gettext_noop ("Crossover"),
+  gettext_noop ("Contemporary Christian"),
+  gettext_noop ("Christian Rock"),
+  gettext_noop ("Merengue"),
+  gettext_noop ("Salsa"),
+  gettext_noop ("Thrash Metal"),
+  gettext_noop ("Anime"),
+  gettext_noop ("JPop"),
+  gettext_noop ("Synthpop"),
+};
+
+#define GENRE_NAME_COUNT \
+    ((unsigned int)(sizeof genre_names / sizeof (const char *const)))
+
+
+
+#define OK         0
+#define INVALID_ID3 1
+
+static void
+trim (char *k)
+{
+  while ((strlen (k) > 0) && (isspace (k[strlen (k) - 1])))
+    k[strlen (k) - 1] = '\0';
+}
+
+static int
+get_id3 (const char *data, size_t size, id3tag * id3)
+{
+  const char *pos;
+
+  if (size < 128)
+    return INVALID_ID3;
+
+  pos = &data[size - 128];
+  if (0 != strncmp ("TAG", pos, 3))
+    return INVALID_ID3;
+  pos += 3;
+
+  id3->title = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+  trim (id3->title);
+  pos += 30;
+  id3->artist = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+  trim (id3->artist);
+  pos += 30;
+  id3->album = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+  trim (id3->album);
+  pos += 30;
+  id3->year = EXTRACTOR_common_convert_to_utf8 (pos, 4, "ISO-8859-1");
+  trim (id3->year);
+  pos += 4;
+  id3->comment = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+  trim (id3->comment);
+  if ( (pos[28] == '\0') &&
+       (pos[29] != '\0') )
+    {
+      /* ID3v1.1 */
+      id3->track_number = pos[29];
+    }
+  else
+    {
+      id3->track_number = 0;
+    }
+  pos += 30;
+  id3->genre = "";
+  if (pos[0] < GENRE_NAME_COUNT)
+    id3->genre = dgettext (PACKAGE, genre_names[(unsigned) pos[0]]);
+  return OK;
+}
+
+
+#define ADD(s,t) do { if (0 != (ret = proc (proc_cls, "id3", t, EXTRACTOR_METAFORMAT_UTF8, "text/plain", s, strlen(s)+1))) goto FINISH; } while (0)
+
+
+const char *
+EXTRACTOR_id3_options ()
+{
+  return "want-tail";
+}
+
+
+int 
+EXTRACTOR_id3_extract (const char *data,
+                       size_t size,
+                       EXTRACTOR_MetaDataProcessor proc,
+                       void *proc_cls,
+                       const char *options)
+{
+  id3tag info;
+  char track[16];
+  int ret;
+
+  fprintf (stderr, "called with %llu bytes\n", (unsigned long long) size);
+  if (OK != get_id3 (data, size, &info))
+    return 0;
+  if (strlen (info.title) > 0)
+    ADD (info.title, EXTRACTOR_METATYPE_TITLE);
+  if (strlen (info.artist) > 0)
+    ADD (info.artist, EXTRACTOR_METATYPE_ARTIST);
+  if (strlen (info.album) > 0)
+    ADD (info.album, EXTRACTOR_METATYPE_ALBUM);
+  if (strlen (info.year) > 0)
+    ADD (info.year, EXTRACTOR_METATYPE_PUBLICATION_YEAR);
+  if (strlen (info.genre) > 0)
+    ADD (info.genre, EXTRACTOR_METATYPE_GENRE);
+  if (strlen (info.comment) > 0)
+    ADD (info.comment, EXTRACTOR_METATYPE_COMMENT);
+  if (info.track_number != 0)
+    {
+      snprintf(track, 
+               sizeof(track), "%u", info.track_number);
+      ADD (track, EXTRACTOR_METATYPE_TRACK_NUMBER);
+    }
+FINISH:
+  free (info.title);
+  free (info.year);
+  free (info.album);
+  free (info.artist);
+  free (info.comment);
+  return ret; 
+}
+
+/* end of id3_extractor.c */