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-rw-r--r--src/mp4ff/mp4meta.c414
1 files changed, 414 insertions, 0 deletions
diff --git a/src/mp4ff/mp4meta.c b/src/mp4ff/mp4meta.c
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+++ b/src/mp4ff/mp4meta.c
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+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** 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.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4meta.c,v 1.13 2004/01/11 15:52:18 menno Exp $
+**/
+
+#ifdef USE_TAGGING
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "mp4ffint.h"
+
+static int32_t mp4ff_tag_add_field(mp4ff_metadata_t *tags, const char *item, const char *value)
+{
+ void *backup = (void *)tags->tags;
+
+ if (!item || (item && !*item) || !value) return 0;
+
+ tags->tags = (mp4ff_tag_t*)realloc(tags->tags, (tags->count+1) * sizeof(mp4ff_tag_t));
+ if (!tags->tags)
+ {
+ if (backup) free(backup);
+ return 0;
+ } else {
+ tags->tags[tags->count].item = strdup(item);
+ tags->tags[tags->count].value = strdup(value);
+
+ if (!tags->tags[tags->count].item || !tags->tags[tags->count].value)
+ {
+ if (!tags->tags[tags->count].item) free (tags->tags[tags->count].item);
+ if (!tags->tags[tags->count].value) free (tags->tags[tags->count].value);
+ tags->tags[tags->count].item = NULL;
+ tags->tags[tags->count].value = NULL;
+ return 0;
+ }
+
+ tags->count++;
+ return 1;
+ }
+}
+
+static int32_t mp4ff_tag_set_field(mp4ff_metadata_t *tags, const char *item, const char *value)
+{
+ unsigned int i;
+
+ if (!item || (item && !*item) || !value) return 0;
+
+ for (i = 0; i < tags->count; i++)
+ {
+ if (!stricmp(tags->tags[i].item, item))
+ {
+ free(tags->tags[i].value);
+ tags->tags[i].value = strdup(value);
+ return 1;
+ }
+ }
+
+ return mp4ff_tag_add_field(tags, item, value);
+}
+
+int32_t mp4ff_tag_delete(mp4ff_metadata_t *tags)
+{
+ uint32_t i;
+
+ for (i = 0; i < tags->count; i++)
+ {
+ if (tags->tags[i].item) free(tags->tags[i].item);
+ if (tags->tags[i].value) free(tags->tags[i].value);
+ }
+
+ if (tags->tags) free(tags->tags);
+
+ tags->tags = NULL;
+ tags->count = 0;
+
+ return 0;
+}
+
+static const char* ID3v1GenreList[] = {
+ "Blues", "Classic Rock", "Country", "Dance", "Disco", "Funk",
+ "Grunge", "Hip-Hop", "Jazz", "Metal", "New Age", "Oldies",
+ "Other", "Pop", "R&B", "Rap", "Reggae", "Rock",
+ "Techno", "Industrial", "Alternative", "Ska", "Death Metal", "Pranks",
+ "Soundtrack", "Euro-Techno", "Ambient", "Trip-Hop", "Vocal", "Jazz+Funk",
+ "Fusion", "Trance", "Classical", "Instrumental", "Acid", "House",
+ "Game", "Sound Clip", "Gospel", "Noise", "AlternRock", "Bass",
+ "Soul", "Punk", "Space", "Meditative", "Instrumental Pop", "Instrumental Rock",
+ "Ethnic", "Gothic", "Darkwave", "Techno-Industrial", "Electronic", "Pop-Folk",
+ "Eurodance", "Dream", "Southern Rock", "Comedy", "Cult", "Gangsta",
+ "Top 40", "Christian Rap", "Pop/Funk", "Jungle", "Native American", "Cabaret",
+ "New Wave", "Psychadelic", "Rave", "Showtunes", "Trailer", "Lo-Fi",
+ "Tribal", "Acid Punk", "Acid Jazz", "Polka", "Retro", "Musical",
+ "Rock & Roll", "Hard Rock", "Folk", "Folk/Rock", "National Folk", "Swing",
+ "Fast-Fusion", "Bebob", "Latin", "Revival", "Celtic", "Bluegrass", "Avantgarde",
+ "Gothic Rock", "Progressive Rock", "Psychedelic Rock", "Symphonic Rock", "Slow Rock", "Big Band",
+ "Chorus", "Easy Listening", "Acoustic", "Humour", "Speech", "Chanson",
+ "Opera", "Chamber Music", "Sonata", "Symphony", "Booty Bass", "Primus",
+ "Porn Groove", "Satire", "Slow Jam", "Club", "Tango", "Samba",
+ "Folklore", "Ballad", "Power Ballad", "Rhythmic Soul", "Freestyle", "Duet",
+ "Punk Rock", "Drum Solo", "A capella", "Euro-House", "Dance Hall",
+ "Goa", "Drum & Bass", "Club House", "Hardcore", "Terror",
+ "Indie", "BritPop", "NegerPunk", "Polsk Punk", "Beat",
+ "Christian Gangsta", "Heavy Metal", "Black Metal", "Crossover", "Contemporary C",
+ "Christian Rock", "Merengue", "Salsa", "Thrash Metal", "Anime", "JPop",
+ "SynthPop",
+};
+
+uint32_t mp4ff_meta_genre_to_index(const char * genrestr)
+{
+ unsigned n;
+ for(n=0;n<sizeof(ID3v1GenreList)/sizeof(ID3v1GenreList[0]);n++)
+ {
+ if (!stricmp(genrestr,ID3v1GenreList[n])) return n+1;
+ }
+ return 0;
+}
+
+const char * mp4ff_meta_index_to_genre(uint32_t idx)
+{
+ if (idx>0 && idx<=sizeof(ID3v1GenreList)/sizeof(ID3v1GenreList[0]))
+ {
+ return ID3v1GenreList[idx-1];
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+
+static int32_t TrackToString(char** str, const uint16_t track, const uint16_t totalTracks)
+{
+ char temp[32];
+ sprintf(temp, "%.5u of %.5u", track, totalTracks);
+ *str = strdup(temp);
+ return 0;
+}
+
+static int32_t mp4ff_set_metadata_name(mp4ff_t *f, const uint8_t atom_type, char **name)
+{
+ static char *tag_names[] = {
+ "unknown", "title", "artist", "writer", "album",
+ "date", "tool", "comment", "genre", "track",
+ "disc", "compilation", "genre", "tempo", "cover"
+ };
+ uint8_t tag_idx = 0;
+
+ switch (atom_type)
+ {
+ case ATOM_TITLE: tag_idx = 1; break;
+ case ATOM_ARTIST: tag_idx = 2; break;
+ case ATOM_WRITER: tag_idx = 3; break;
+ case ATOM_ALBUM: tag_idx = 4; break;
+ case ATOM_DATE: tag_idx = 5; break;
+ case ATOM_TOOL: tag_idx = 6; break;
+ case ATOM_COMMENT: tag_idx = 7; break;
+ case ATOM_GENRE1: tag_idx = 8; break;
+ case ATOM_TRACK: tag_idx = 9; break;
+ case ATOM_DISC: tag_idx = 10; break;
+ case ATOM_COMPILATION: tag_idx = 11; break;
+ case ATOM_GENRE2: tag_idx = 12; break;
+ case ATOM_TEMPO: tag_idx = 13; break;
+ case ATOM_COVER: tag_idx = 14; break;
+ default: tag_idx = 0; break;
+ }
+
+ *name = strdup(tag_names[tag_idx]);
+
+ return 0;
+}
+
+static int32_t mp4ff_parse_tag(mp4ff_t *f, const uint8_t parent_atom_type, const int32_t size)
+{
+ uint8_t atom_type;
+ uint8_t header_size = 0;
+ uint64_t subsize, sumsize = 0;
+ char * name = NULL;
+ char * data = NULL;
+ uint32_t done = 0;
+
+
+ while (sumsize < size)
+ {
+ uint64_t destpos;
+ subsize = mp4ff_atom_read_header(f, &atom_type, &header_size);
+ destpos = mp4ff_position(f)+subsize-header_size;
+ if (!done)
+ {
+ if (atom_type == ATOM_DATA)
+ {
+ mp4ff_read_char(f); /* version */
+ mp4ff_read_int24(f); /* flags */
+ mp4ff_read_int32(f); /* reserved */
+
+ /* some need special attention */
+ if (parent_atom_type == ATOM_GENRE2 || parent_atom_type == ATOM_TEMPO)
+ {
+ if (subsize - header_size >= 8 + 2)
+ {
+ uint16_t val = mp4ff_read_int16(f);
+
+ if (parent_atom_type == ATOM_TEMPO)
+ {
+ char temp[16];
+ sprintf(temp, "%.5u BPM", val);
+ mp4ff_tag_add_field(&(f->tags), "tempo", temp);
+ }
+ else
+ {
+ const char * temp = mp4ff_meta_index_to_genre(val);
+ if (temp)
+ {
+ mp4ff_tag_add_field(&(f->tags), "genre", temp);
+ }
+ }
+ done = 1;
+ }
+ } else if (parent_atom_type == ATOM_TRACK || parent_atom_type == ATOM_DISC) {
+ if (!done && subsize - header_size >= 8 + 8)
+ {
+ uint16_t index,total;
+ char temp[32];
+ mp4ff_read_int16(f);
+ index = mp4ff_read_int16(f);
+ total = mp4ff_read_int16(f);
+ mp4ff_read_int16(f);
+
+ sprintf(temp,"%d",index);
+ mp4ff_tag_add_field(&(f->tags), parent_atom_type == ATOM_TRACK ? "track" : "disc", temp);
+ if (total>0)
+ {
+ sprintf(temp,"%d",total);
+ mp4ff_tag_add_field(&(f->tags), parent_atom_type == ATOM_TRACK ? "totaltracks" : "totaldiscs", temp);
+ }
+ done = 1;
+ }
+ } else
+ {
+ if (data) {free(data);data = NULL;}
+ data = mp4ff_read_string(f,(uint32_t)(subsize-(header_size+8)));
+ }
+ } else if (atom_type == ATOM_NAME) {
+ if (!done)
+ {
+ mp4ff_read_char(f); /* version */
+ mp4ff_read_int24(f); /* flags */
+ if (name) free(name);
+ name = mp4ff_read_string(f,(uint32_t)(subsize-(header_size+4)));
+ }
+ }
+ mp4ff_set_position(f, destpos);
+ sumsize += subsize;
+ }
+ }
+
+ if (data)
+ {
+ if (!done)
+ {
+ if (name == NULL) mp4ff_set_metadata_name(f, parent_atom_type, &name);
+ if (name) mp4ff_tag_add_field(&(f->tags), name, data);
+ }
+
+ free(data);
+ }
+ if (name) free(name);
+ return 1;
+}
+
+int32_t mp4ff_parse_metadata(mp4ff_t *f, const int32_t size)
+{
+ uint64_t subsize, sumsize = 0;
+ uint8_t atom_type;
+ uint8_t header_size = 0;
+
+ while (sumsize < size)
+ {
+ subsize = mp4ff_atom_read_header(f, &atom_type, &header_size);
+ mp4ff_parse_tag(f, atom_type, (uint32_t)(subsize-header_size));
+ sumsize += subsize;
+ }
+
+ return 0;
+}
+
+/* find a metadata item by name */
+/* returns 0 if item found, 1 if no such item */
+static int32_t mp4ff_meta_find_by_name(const mp4ff_t *f, const char *item, char **value)
+{
+ uint32_t i;
+
+ for (i = 0; i < f->tags.count; i++)
+ {
+ if (!stricmp(f->tags.tags[i].item, item))
+ {
+ *value = strdup(f->tags.tags[i].value);
+ return 1;
+ }
+ }
+
+ *value = NULL;
+
+ /* not found */
+ return 0;
+}
+
+int32_t mp4ff_meta_get_num_items(const mp4ff_t *f)
+{
+ return f->tags.count;
+}
+
+int32_t mp4ff_meta_get_by_index(const mp4ff_t *f, uint32_t index,
+ char **item, char **value)
+{
+ if (index >= f->tags.count)
+ {
+ *item = NULL;
+ *value = NULL;
+ return 0;
+ } else {
+ *item = strdup(f->tags.tags[index].item);
+ *value = strdup(f->tags.tags[index].value);
+ return 1;
+ }
+}
+
+int32_t mp4ff_meta_get_title(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "title", value);
+}
+
+int32_t mp4ff_meta_get_artist(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "artist", value);
+}
+
+int32_t mp4ff_meta_get_writer(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "writer", value);
+}
+
+int32_t mp4ff_meta_get_album(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "album", value);
+}
+
+int32_t mp4ff_meta_get_date(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "date", value);
+}
+
+int32_t mp4ff_meta_get_tool(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "tool", value);
+}
+
+int32_t mp4ff_meta_get_comment(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "comment", value);
+}
+
+int32_t mp4ff_meta_get_genre(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "genre", value);
+}
+
+int32_t mp4ff_meta_get_track(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "track", value);
+}
+
+int32_t mp4ff_meta_get_disc(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "disc", value);
+}
+
+int32_t mp4ff_meta_get_compilation(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "compilation", value);
+}
+
+int32_t mp4ff_meta_get_tempo(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "tempo", value);
+}
+
+int32_t mp4ff_meta_get_coverart(const mp4ff_t *f, char **value)
+{
+ return mp4ff_meta_find_by_name(f, "cover", value);
+}
+
+#endif
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