2009-01-15 12:23:03 +00:00
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/*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2011-05-17 21:28:19 +00:00
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/**
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* @file
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* ID3v2 header parser
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*
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* Specifications available at:
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* http://id3.org/Developer_Information
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*/
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2009-01-15 12:23:03 +00:00
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#include "id3v2.h"
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2009-06-11 15:26:57 +00:00
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#include "id3v1.h"
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#include "libavutil/avstring.h"
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2010-06-11 13:44:57 +00:00
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#include "libavutil/intreadwrite.h"
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2010-10-15 19:04:25 +00:00
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#include "metadata.h"
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2011-02-20 10:04:13 +00:00
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#include "avio_internal.h"
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2009-01-15 12:23:03 +00:00
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2010-06-11 13:44:57 +00:00
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int ff_id3v2_match(const uint8_t *buf, const char * magic)
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2009-01-15 12:23:03 +00:00
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{
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2010-06-11 13:44:57 +00:00
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return buf[0] == magic[0] &&
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buf[1] == magic[1] &&
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buf[2] == magic[2] &&
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2009-06-11 15:35:23 +00:00
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buf[3] != 0xff &&
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buf[4] != 0xff &&
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(buf[6] & 0x80) == 0 &&
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(buf[7] & 0x80) == 0 &&
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(buf[8] & 0x80) == 0 &&
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2009-06-11 20:45:35 +00:00
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(buf[9] & 0x80) == 0;
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2009-01-15 12:23:03 +00:00
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}
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2009-01-19 21:54:06 +00:00
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int ff_id3v2_tag_len(const uint8_t * buf)
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{
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int len = ((buf[6] & 0x7f) << 21) +
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2009-06-11 15:35:23 +00:00
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((buf[7] & 0x7f) << 14) +
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((buf[8] & 0x7f) << 7) +
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(buf[9] & 0x7f) +
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ID3v2_HEADER_SIZE;
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2009-01-19 21:54:06 +00:00
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if (buf[5] & 0x10)
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len += ID3v2_HEADER_SIZE;
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return len;
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}
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2009-06-11 15:26:57 +00:00
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2011-02-20 10:04:12 +00:00
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static unsigned int get_size(AVIOContext *s, int len)
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2009-06-11 15:26:57 +00:00
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{
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2009-06-11 15:35:23 +00:00
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int v = 0;
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while (len--)
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2011-02-21 15:43:01 +00:00
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v = (v << 7) + (avio_r8(s) & 0x7F);
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2009-06-11 15:26:57 +00:00
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return v;
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}
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2011-02-20 10:04:12 +00:00
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static void read_ttag(AVFormatContext *s, AVIOContext *pb, int taglen, const char *key)
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2009-06-11 15:26:57 +00:00
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{
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char *q, dst[512];
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2009-10-05 20:10:07 +00:00
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const char *val = NULL;
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2009-06-11 15:26:57 +00:00
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int len, dstlen = sizeof(dst) - 1;
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unsigned genre;
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2011-02-21 15:43:01 +00:00
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unsigned int (*get)(AVIOContext*) = avio_rb16;
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2009-06-11 15:26:57 +00:00
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2009-06-11 15:35:23 +00:00
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dst[0] = 0;
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if (taglen < 1)
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2009-06-11 15:26:57 +00:00
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return;
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taglen--; /* account for encoding type byte */
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2011-02-21 15:43:01 +00:00
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switch (avio_r8(pb)) { /* encoding type */
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2009-06-11 15:26:57 +00:00
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2011-01-19 09:13:25 +00:00
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case ID3v2_ENCODING_ISO8859:
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2009-06-11 15:26:57 +00:00
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q = dst;
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2009-09-23 18:04:40 +00:00
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while (taglen-- && q - dst < dstlen - 7) {
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2009-06-11 15:26:57 +00:00
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uint8_t tmp;
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2011-02-21 15:43:01 +00:00
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PUT_UTF8(avio_r8(pb), tmp, *q++ = tmp;)
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2009-06-11 15:26:57 +00:00
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}
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2009-09-23 18:10:29 +00:00
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*q = 0;
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2009-06-11 15:26:57 +00:00
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break;
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2011-01-19 09:13:25 +00:00
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case ID3v2_ENCODING_UTF16BOM:
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2009-09-23 18:22:00 +00:00
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taglen -= 2;
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2011-02-21 15:43:01 +00:00
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switch (avio_rb16(pb)) {
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2009-09-23 18:22:00 +00:00
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case 0xfffe:
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2011-02-21 15:43:01 +00:00
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get = avio_rl16;
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2009-09-23 18:22:00 +00:00
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case 0xfeff:
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break;
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default:
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av_log(s, AV_LOG_ERROR, "Incorrect BOM value in tag %s.\n", key);
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return;
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}
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// fall-through
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2011-01-19 09:13:25 +00:00
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case ID3v2_ENCODING_UTF16BE:
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2009-09-23 18:22:00 +00:00
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q = dst;
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while (taglen > 1 && q - dst < dstlen - 7) {
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uint32_t ch;
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uint8_t tmp;
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2010-08-18 16:29:46 +00:00
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GET_UTF16(ch, ((taglen -= 2) >= 0 ? get(pb) : 0), break;)
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2009-09-23 18:22:00 +00:00
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PUT_UTF8(ch, tmp, *q++ = tmp;)
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}
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*q = 0;
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break;
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2011-01-19 09:13:25 +00:00
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case ID3v2_ENCODING_UTF8:
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2010-04-22 12:54:50 +00:00
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len = FFMIN(taglen, dstlen);
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2011-02-21 15:43:01 +00:00
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avio_read(pb, dst, len);
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2009-06-11 15:26:57 +00:00
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dst[len] = 0;
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break;
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2009-09-23 18:22:00 +00:00
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default:
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2011-03-07 22:32:05 +00:00
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av_log(s, AV_LOG_WARNING, "Unknown encoding in tag %s.\n", key);
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2009-06-11 15:26:57 +00:00
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}
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2009-10-05 20:10:07 +00:00
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if (!(strcmp(key, "TCON") && strcmp(key, "TCO"))
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2009-06-11 15:26:57 +00:00
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&& (sscanf(dst, "(%d)", &genre) == 1 || sscanf(dst, "%d", &genre) == 1)
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&& genre <= ID3v1_GENRE_MAX)
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2009-10-05 20:10:07 +00:00
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val = ff_id3v1_genre_str[genre];
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else if (!(strcmp(key, "TXXX") && strcmp(key, "TXX"))) {
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/* dst now contains two 0-terminated strings */
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dst[dstlen] = 0;
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len = strlen(dst);
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key = dst;
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val = dst + FFMIN(len + 1, dstlen);
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}
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else if (*dst)
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val = dst;
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2009-06-11 15:26:57 +00:00
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2009-10-05 20:10:07 +00:00
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if (val)
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2011-01-20 08:06:58 +00:00
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av_metadata_set2(&s->metadata, key, val, AV_METADATA_DONT_OVERWRITE);
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2009-06-11 15:26:57 +00:00
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}
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2011-03-15 09:14:16 +00:00
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static int is_number(const char *str)
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{
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while (*str >= '0' && *str <= '9') str++;
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return !*str;
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}
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static AVMetadataTag* get_date_tag(AVMetadata *m, const char *tag)
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{
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AVMetadataTag *t;
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if ((t = av_metadata_get(m, tag, NULL, AV_METADATA_MATCH_CASE)) &&
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strlen(t->value) == 4 && is_number(t->value))
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return t;
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return NULL;
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}
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static void merge_date(AVMetadata **m)
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{
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AVMetadataTag *t;
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char date[17] = {0}; // YYYY-MM-DD hh:mm
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if (!(t = get_date_tag(*m, "TYER")) &&
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!(t = get_date_tag(*m, "TYE")))
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return;
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av_strlcpy(date, t->value, 5);
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av_metadata_set2(m, "TYER", NULL, 0);
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av_metadata_set2(m, "TYE", NULL, 0);
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if (!(t = get_date_tag(*m, "TDAT")) &&
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!(t = get_date_tag(*m, "TDA")))
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goto finish;
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snprintf(date + 4, sizeof(date) - 4, "-%.2s-%.2s", t->value + 2, t->value);
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av_metadata_set2(m, "TDAT", NULL, 0);
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av_metadata_set2(m, "TDA", NULL, 0);
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if (!(t = get_date_tag(*m, "TIME")) &&
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!(t = get_date_tag(*m, "TIM")))
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goto finish;
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snprintf(date + 10, sizeof(date) - 10, " %.2s:%.2s", t->value, t->value + 2);
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av_metadata_set2(m, "TIME", NULL, 0);
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av_metadata_set2(m, "TIM", NULL, 0);
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finish:
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if (date[0])
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av_metadata_set2(m, "date", date, 0);
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}
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2011-01-20 08:35:58 +00:00
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static void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t flags)
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2009-06-11 15:26:57 +00:00
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{
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2011-03-07 22:18:36 +00:00
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int isv34, unsync;
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unsigned tlen;
|
2009-10-05 20:10:07 +00:00
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char tag[5];
|
2011-03-17 06:10:23 +00:00
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int64_t next, end = avio_tell(s->pb) + len;
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2009-06-11 15:26:57 +00:00
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int taghdrlen;
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2011-03-15 06:54:22 +00:00
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const char *reason = NULL;
|
2011-02-20 10:04:12 +00:00
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AVIOContext pb;
|
2010-08-18 16:29:46 +00:00
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unsigned char *buffer = NULL;
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int buffer_size = 0;
|
2009-06-11 15:26:57 +00:00
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2009-06-11 15:35:23 +00:00
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switch (version) {
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2009-06-11 15:26:57 +00:00
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case 2:
|
2009-06-11 15:35:23 +00:00
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if (flags & 0x40) {
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2009-06-11 15:26:57 +00:00
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reason = "compression";
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goto error;
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}
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isv34 = 0;
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taghdrlen = 6;
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break;
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case 3:
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case 4:
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isv34 = 1;
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taghdrlen = 10;
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break;
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default:
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reason = "version";
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goto error;
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}
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|
2010-08-18 16:29:46 +00:00
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unsync = flags & 0x80;
|
2009-06-11 15:26:57 +00:00
|
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|
|
2009-06-11 15:35:23 +00:00
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if (isv34 && flags & 0x40) /* Extended header present, just skip over it */
|
2011-03-15 08:14:38 +00:00
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|
avio_skip(s->pb, get_size(s->pb, 4));
|
2009-06-11 15:26:57 +00:00
|
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|
2009-06-11 15:35:23 +00:00
|
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|
while (len >= taghdrlen) {
|
2010-08-18 16:29:46 +00:00
|
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|
unsigned int tflags;
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|
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int tunsync = 0;
|
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|
|
|
2009-06-11 15:35:23 +00:00
|
|
|
if (isv34) {
|
2011-02-21 15:43:01 +00:00
|
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|
avio_read(s->pb, tag, 4);
|
2009-10-05 20:10:07 +00:00
|
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|
tag[4] = 0;
|
2009-06-29 18:36:49 +00:00
|
|
|
if(version==3){
|
2011-02-21 15:43:01 +00:00
|
|
|
tlen = avio_rb32(s->pb);
|
2009-06-29 18:36:49 +00:00
|
|
|
}else
|
|
|
|
tlen = get_size(s->pb, 4);
|
2011-02-21 15:43:01 +00:00
|
|
|
tflags = avio_rb16(s->pb);
|
2010-12-07 07:52:50 +00:00
|
|
|
tunsync = tflags & ID3v2_FLAG_UNSYNCH;
|
2009-06-11 15:26:57 +00:00
|
|
|
} else {
|
2011-02-21 15:43:01 +00:00
|
|
|
avio_read(s->pb, tag, 3);
|
2009-10-05 20:10:07 +00:00
|
|
|
tag[3] = 0;
|
2011-02-21 15:43:01 +00:00
|
|
|
tlen = avio_rb24(s->pb);
|
2009-06-11 15:26:57 +00:00
|
|
|
}
|
2011-03-07 22:18:36 +00:00
|
|
|
if (tlen > (1<<28))
|
|
|
|
break;
|
2009-06-11 15:26:57 +00:00
|
|
|
len -= taghdrlen + tlen;
|
|
|
|
|
2009-06-11 15:35:23 +00:00
|
|
|
if (len < 0)
|
2009-06-11 15:26:57 +00:00
|
|
|
break;
|
|
|
|
|
2011-03-03 19:11:45 +00:00
|
|
|
next = avio_tell(s->pb) + tlen;
|
2009-06-11 15:26:57 +00:00
|
|
|
|
2010-12-10 15:48:56 +00:00
|
|
|
if (tflags & ID3v2_FLAG_DATALEN) {
|
2011-05-17 22:43:25 +00:00
|
|
|
if (tlen < 4)
|
|
|
|
break;
|
2011-02-21 15:43:01 +00:00
|
|
|
avio_rb32(s->pb);
|
2010-12-10 15:48:56 +00:00
|
|
|
tlen -= 4;
|
|
|
|
}
|
|
|
|
|
2010-12-07 07:52:54 +00:00
|
|
|
if (tflags & (ID3v2_FLAG_ENCRYPTION | ID3v2_FLAG_COMPRESSION)) {
|
|
|
|
av_log(s, AV_LOG_WARNING, "Skipping encrypted/compressed ID3v2 frame %s.\n", tag);
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(s->pb, tlen);
|
2010-12-07 07:52:54 +00:00
|
|
|
} else if (tag[0] == 'T') {
|
2010-08-18 16:29:46 +00:00
|
|
|
if (unsync || tunsync) {
|
|
|
|
int i, j;
|
|
|
|
av_fast_malloc(&buffer, &buffer_size, tlen);
|
|
|
|
for (i = 0, j = 0; i < tlen; i++, j++) {
|
2011-02-21 15:43:01 +00:00
|
|
|
buffer[j] = avio_r8(s->pb);
|
2010-08-18 16:29:46 +00:00
|
|
|
if (j > 0 && !buffer[j] && buffer[j - 1] == 0xff) {
|
|
|
|
/* Unsynchronised byte, skip it */
|
|
|
|
j--;
|
|
|
|
}
|
|
|
|
}
|
2011-02-20 10:04:13 +00:00
|
|
|
ffio_init_context(&pb, buffer, j, 0, NULL, NULL, NULL, NULL);
|
2010-08-18 16:29:46 +00:00
|
|
|
read_ttag(s, &pb, j, tag);
|
|
|
|
} else {
|
|
|
|
read_ttag(s, s->pb, tlen, tag);
|
|
|
|
}
|
|
|
|
}
|
2009-10-15 13:55:19 +00:00
|
|
|
else if (!tag[0]) {
|
|
|
|
if (tag[1])
|
|
|
|
av_log(s, AV_LOG_WARNING, "invalid frame id, assuming padding");
|
2011-03-15 08:14:38 +00:00
|
|
|
avio_skip(s->pb, tlen);
|
2009-10-15 13:55:19 +00:00
|
|
|
break;
|
|
|
|
}
|
2009-06-11 15:26:57 +00:00
|
|
|
/* Skip to end of tag */
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, next, SEEK_SET);
|
2009-06-11 15:26:57 +00:00
|
|
|
}
|
|
|
|
|
2009-06-11 15:35:23 +00:00
|
|
|
if (version == 4 && flags & 0x10) /* Footer preset, always 10 bytes, skip over it */
|
2011-03-17 06:10:23 +00:00
|
|
|
end += 10;
|
2009-06-11 15:26:57 +00:00
|
|
|
|
|
|
|
error:
|
2011-03-15 06:54:22 +00:00
|
|
|
if (reason)
|
|
|
|
av_log(s, AV_LOG_INFO, "ID3v2.%d tag skipped, cannot handle %s\n", version, reason);
|
2011-03-17 06:10:23 +00:00
|
|
|
avio_seek(s->pb, end, SEEK_SET);
|
2010-08-18 16:29:46 +00:00
|
|
|
av_free(buffer);
|
2009-06-11 15:26:57 +00:00
|
|
|
return;
|
|
|
|
}
|
2009-09-29 07:05:03 +00:00
|
|
|
|
2011-01-20 08:35:58 +00:00
|
|
|
void ff_id3v2_read(AVFormatContext *s, const char *magic)
|
|
|
|
{
|
|
|
|
int len, ret;
|
|
|
|
uint8_t buf[ID3v2_HEADER_SIZE];
|
|
|
|
int found_header;
|
|
|
|
int64_t off;
|
|
|
|
|
|
|
|
do {
|
|
|
|
/* save the current offset in case there's nothing to read/skip */
|
2011-03-03 19:11:45 +00:00
|
|
|
off = avio_tell(s->pb);
|
2011-02-21 15:43:01 +00:00
|
|
|
ret = avio_read(s->pb, buf, ID3v2_HEADER_SIZE);
|
2011-01-20 08:35:58 +00:00
|
|
|
if (ret != ID3v2_HEADER_SIZE)
|
2011-01-20 08:35:59 +00:00
|
|
|
break;
|
2011-01-20 08:35:58 +00:00
|
|
|
found_header = ff_id3v2_match(buf, magic);
|
|
|
|
if (found_header) {
|
|
|
|
/* parse ID3v2 header */
|
|
|
|
len = ((buf[6] & 0x7f) << 21) |
|
|
|
|
((buf[7] & 0x7f) << 14) |
|
|
|
|
((buf[8] & 0x7f) << 7) |
|
|
|
|
(buf[9] & 0x7f);
|
|
|
|
ff_id3v2_parse(s, len, buf[3], buf[5]);
|
|
|
|
} else {
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(s->pb, off, SEEK_SET);
|
2011-01-20 08:35:58 +00:00
|
|
|
}
|
|
|
|
} while (found_header);
|
2011-01-21 19:54:34 +00:00
|
|
|
ff_metadata_conv(&s->metadata, NULL, ff_id3v2_34_metadata_conv);
|
|
|
|
ff_metadata_conv(&s->metadata, NULL, ff_id3v2_2_metadata_conv);
|
|
|
|
ff_metadata_conv(&s->metadata, NULL, ff_id3v2_4_metadata_conv);
|
2011-03-15 09:14:16 +00:00
|
|
|
merge_date(&s->metadata);
|
2011-01-20 08:35:58 +00:00
|
|
|
}
|
|
|
|
|
2011-01-21 19:54:34 +00:00
|
|
|
const AVMetadataConv ff_id3v2_34_metadata_conv[] = {
|
2009-09-29 07:05:03 +00:00
|
|
|
{ "TALB", "album"},
|
|
|
|
{ "TCOM", "composer"},
|
|
|
|
{ "TCON", "genre"},
|
|
|
|
{ "TCOP", "copyright"},
|
2010-02-01 11:39:10 +00:00
|
|
|
{ "TENC", "encoded_by"},
|
2009-09-29 07:05:03 +00:00
|
|
|
{ "TIT2", "title"},
|
|
|
|
{ "TLAN", "language"},
|
2009-12-13 21:01:49 +00:00
|
|
|
{ "TPE1", "artist"},
|
2010-02-01 11:39:10 +00:00
|
|
|
{ "TPE2", "album_artist"},
|
|
|
|
{ "TPE3", "performer"},
|
2009-09-29 07:05:03 +00:00
|
|
|
{ "TPOS", "disc"},
|
|
|
|
{ "TPUB", "publisher"},
|
|
|
|
{ "TRCK", "track"},
|
2011-01-21 19:54:34 +00:00
|
|
|
{ "TSSE", "encoder"},
|
|
|
|
{ 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
const AVMetadataConv ff_id3v2_4_metadata_conv[] = {
|
|
|
|
{ "TDRL", "date"},
|
|
|
|
{ "TDRC", "date"},
|
|
|
|
{ "TDEN", "creation_time"},
|
2010-02-01 11:39:10 +00:00
|
|
|
{ "TSOA", "album-sort"},
|
|
|
|
{ "TSOP", "artist-sort"},
|
|
|
|
{ "TSOT", "title-sort"},
|
2009-09-29 07:05:03 +00:00
|
|
|
{ 0 }
|
|
|
|
};
|
2009-10-05 16:06:00 +00:00
|
|
|
|
2011-01-21 19:54:34 +00:00
|
|
|
const AVMetadataConv ff_id3v2_2_metadata_conv[] = {
|
|
|
|
{ "TAL", "album"},
|
|
|
|
{ "TCO", "genre"},
|
|
|
|
{ "TT2", "title"},
|
|
|
|
{ "TEN", "encoded_by"},
|
|
|
|
{ "TP1", "artist"},
|
|
|
|
{ "TP2", "album_artist"},
|
|
|
|
{ "TP3", "performer"},
|
|
|
|
{ "TRK", "track"},
|
|
|
|
{ 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2009-10-05 16:06:00 +00:00
|
|
|
const char ff_id3v2_tags[][4] = {
|
2011-01-21 19:54:34 +00:00
|
|
|
"TALB", "TBPM", "TCOM", "TCON", "TCOP", "TDLY", "TENC", "TEXT",
|
|
|
|
"TFLT", "TIT1", "TIT2", "TIT3", "TKEY", "TLAN", "TLEN", "TMED",
|
|
|
|
"TOAL", "TOFN", "TOLY", "TOPE", "TOWN", "TPE1", "TPE2", "TPE3",
|
|
|
|
"TPE4", "TPOS", "TPUB", "TRCK", "TRSN", "TRSO", "TSRC", "TSSE",
|
|
|
|
{ 0 },
|
|
|
|
};
|
|
|
|
|
|
|
|
const char ff_id3v2_4_tags[][4] = {
|
|
|
|
"TDEN", "TDOR", "TDRC", "TDRL", "TDTG", "TIPL", "TMCL", "TMOO",
|
|
|
|
"TPRO", "TSOA", "TSOP", "TSOT", "TSST",
|
|
|
|
{ 0 },
|
|
|
|
};
|
|
|
|
|
|
|
|
const char ff_id3v2_3_tags[][4] = {
|
|
|
|
"TDAT", "TIME", "TORY", "TRDA", "TSIZ", "TYER",
|
2009-10-05 16:06:00 +00:00
|
|
|
{ 0 },
|
|
|
|
};
|