//========================================================================= // FILENAME : tagutils.c // DESCRIPTION : MP3/MP4/Ogg/FLAC metadata reader //========================================================================= // Copyright (c) 2008- NETGEAR, Inc. All Rights Reserved. //========================================================================= /* 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 2 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* This file is derived from mt-daapd project */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "tagutils.h" #include "log.h" #include "misc.h" #include "textutils.h" struct id3header { unsigned char id[3]; unsigned char version[2]; unsigned char flags; unsigned char size[4]; } __attribute((packed)); char *winamp_genre[] = { /*00*/"Blues", "Classic Rock", "Country", "Dance", "Disco", "Funk", "Grunge", "Hip-Hop", /*08*/"Jazz", "Metal", "New Age", "Oldies", "Other", "Pop", "R&B", "Rap", /*10*/"Reggae", "Rock", "Techno", "Industrial", "Alternative", "Ska", "Death Metal", "Pranks", /*18*/"Soundtrack", "Euro-Techno", "Ambient", "Trip-Hop", "Vocal", "Jazz+Funk", "Fusion", "Trance", /*20*/"Classical", "Instrumental", "Acid", "House", "Game", "Sound Clip", "Gospel", "Noise", /*28*/"AlternRock", "Bass", "Soul", "Punk", "Space", "Meditative", "Instrumental Pop", "Instrumental Rock", /*30*/"Ethnic", "Gothic", "Darkwave", "Techno-Industrial", "Electronic", "Pop-Folk", "Eurodance", "Dream", /*38*/"Southern Rock", "Comedy", "Cult", "Gangsta", "Top 40", "Christian Rap", "Pop/Funk", "Jungle", /*40*/"Native American", "Cabaret", "New Wave", "Psychadelic", "Rave", "Showtunes", "Trailer", "Lo-Fi", /*48*/"Tribal", "Acid Punk", "Acid Jazz", "Polka", "Retro", "Musical", "Rock & Roll", "Hard Rock", /*50*/"Folk", "Folk/Rock", "National folk", "Swing", "Fast-fusion", "Bebob", "Latin", "Revival", /*58*/"Celtic", "Bluegrass", "Avantgarde", "Gothic Rock", "Progressive Rock", "Psychedelic Rock", "Symphonic Rock", "Slow Rock", /*60*/"Big Band", "Chorus", "Easy Listening", "Acoustic", "Humour", "Speech", "Chanson", "Opera", /*68*/"Chamber Music", "Sonata", "Symphony", "Booty Bass", "Primus", "Porn Groove", "Satire", "Slow Jam", /*70*/"Club", "Tango", "Samba", "Folklore", "Ballad", "Powder Ballad", "Rhythmic Soul", "Freestyle", /*78*/"Duet", "Punk Rock", "Drum Solo", "A Capella", "Euro-House", "Dance Hall", "Goa", "Drum & Bass", /*80*/"Club House", "Hardcore", "Terror", "Indie", "BritPop", "NegerPunk", "Polsk Punk", "Beat", /*88*/"Christian Gangsta", "Heavy Metal", "Black Metal", "Crossover", "Contemporary C", "Christian Rock", "Merengue", "Salsa", /*90*/"Thrash Metal", "Anime", "JPop", "SynthPop", "Unknown" }; #define WINAMP_GENRE_UNKNOWN ((sizeof(winamp_genre)/sizeof(winamp_genre[0]))-1) /* * Prototype */ #include "tagutils-mp3.h" #include "tagutils-aac.h" #include "tagutils-ogg.h" #include "tagutils-flc.h" #include "tagutils-asf.h" static int _get_tags(char *file, struct song_metadata *psong); static int _get_fileinfo(char *file, struct song_metadata *psong); /* * Typedefs */ typedef struct { char* type; int (*get_tags)(char* file, struct song_metadata* psong); int (*get_fileinfo)(char* file, struct song_metadata* psong); } taghandler; static taghandler taghandlers[] = { { "aac", _get_aactags, _get_aacfileinfo }, { "mp3", _get_mp3tags, _get_mp3fileinfo }, { "flc", _get_flctags, _get_flcfileinfo }, { "ogg", 0, _get_oggfileinfo }, { "asf", 0, _get_asffileinfo }, { NULL, 0 } }; //********************************************************************************* #include "tagutils-misc.c" #include "tagutils-mp3.c" #include "tagutils-aac.c" #include "tagutils-ogg.c" #include "tagutils-flc.c" #include "tagutils-asf.c" //********************************************************************************* // freetags() #define MAYBEFREE(a) { if((a)) free((a)); }; void freetags(struct song_metadata *psong) { int role; MAYBEFREE(psong->path); MAYBEFREE(psong->image); if (psong->titlesearch && psong->titlesearch != psong->titlesort) free(psong->titlesearch); if (psong->titlesort && psong->titlesort != psong->title) free(psong->titlesort); MAYBEFREE(psong->title); MAYBEFREE(psong->album); MAYBEFREE(psong->comment); for (role=ROLE_START; role<=ROLE_LAST; role++) { MAYBEFREE(psong->contributor[role]); MAYBEFREE(psong->contributor_sort[role]); } MAYBEFREE(psong->grouping); MAYBEFREE(psong->tagversion); MAYBEFREE(psong->musicbrainz_albumid); MAYBEFREE(psong->musicbrainz_trackid); MAYBEFREE(psong->musicbrainz_artistid); MAYBEFREE(psong->musicbrainz_albumartistid); } // _get_fileinfo static int _get_fileinfo(char *file, struct song_metadata *psong) { taghandler *hdl; // dispatch to appropriate tag handler for (hdl = taghandlers; hdl->type; ++hdl) if (!strcmp(hdl->type, psong->type)) break; if (hdl->get_fileinfo) return hdl->get_fileinfo(file, psong); return 0; } static void _make_composite_tags(struct song_metadata *psong) { int len; len=0; if (!psong->contributor[ROLE_ARTIST] && (psong->contributor[ROLE_BAND] || psong->contributor[ROLE_CONDUCTOR])) { if (psong->contributor[ROLE_BAND]) len += strlen(psong->contributor[ROLE_BAND]); if (psong->contributor[ROLE_CONDUCTOR]) len += strlen(psong->contributor[ROLE_CONDUCTOR]); len += 3; psong->contributor[ROLE_ARTIST] = (char*) calloc(len, 1); if (psong->contributor[ROLE_ARTIST]) { if (psong->contributor[ROLE_BAND]) strcat(psong->contributor[ROLE_ARTIST], psong->contributor[ROLE_BAND]); if (psong->contributor[ROLE_BAND] && psong->contributor[ROLE_CONDUCTOR]) strcat(psong->contributor[ROLE_ARTIST], " - "); if (psong->contributor[ROLE_CONDUCTOR]) strcat(psong->contributor[ROLE_ARTIST], psong->contributor[ROLE_CONDUCTOR]); } } if (!psong->title) { char *suffix; psong->title = strdup(psong->basename); suffix = strrchr(psong->title, '.'); if (suffix) *suffix = '\0'; } // titlesort/titlesearch psong->titlesearch = psong->titlesort = canonicalize_name(psong->title); } /*****************************************************************************/ // _get_tags static int _get_tags(char *file, struct song_metadata *psong) { taghandler *hdl; // dispatch for (hdl = taghandlers ; hdl->type ; ++hdl) if (!strcasecmp(hdl->type, psong->type)) break; if (hdl->get_tags) { return hdl->get_tags(file, psong); } return 0; } /*****************************************************************************/ // readtags int readtags(char *path, struct song_metadata *psong, struct stat *stat, char *lang, char *type) { char *fname; int found = 0; if (lang_index==-1) lang_index = _lang2cp(lang); memset((void*)psong, 0, sizeof(struct song_metadata)); psong->path = strdup(path); psong->type = type; fname = strrchr(psong->path, '/'); psong->basename = fname ? fname+1 : psong->path; // get tag found |= _get_tags(path, psong); if (stat) { if (!psong->time_modified) psong->time_modified = stat->st_mtime; psong->file_size = stat->st_size; } // get fileinfo found |= _get_fileinfo(path, psong); // if (!found) { _make_composite_tags(psong); return 0; } else { return -1; } }