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This commit is contained in:
Herwig Birke
2018-02-27 17:26:29 +01:00
parent e4a5bd75f5
commit f09e2d611a
57 changed files with 14366 additions and 2 deletions
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libid3tag/compat.c
+503
View File
@@ -0,0 +1,503 @@
/* C code produced by gperf version 3.0.1 */
/* Command-line: gperf -tCcTonD -K id -N id3_compat_lookup -s -3 -k '*' compat.gperf */
#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
&& ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
&& (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
&& ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
&& ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
&& ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
&& ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
&& ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
&& ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
&& ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
&& ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
&& ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
&& ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
&& ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
&& ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
&& ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
&& ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
&& ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
&& ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
&& ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
&& ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
&& ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
&& ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
/* The character set is not based on ISO-646. */
error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
#endif
#line 1 "compat.gperf"
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* Id: compat.gperf,v 1.11 2004/01/23 09:41:32 rob Exp
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include <string.h>
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include "id3tag.h"
# include "compat.h"
# include "frame.h"
# include "field.h"
# include "parse.h"
# include "ucs4.h"
# define EQ(id) #id, 0
# define OBSOLETE 0, 0
# define TX(id) #id, translate_##id
static id3_compat_func_t translate_TCON;
#define TOTAL_KEYWORDS 73
#define MIN_WORD_LENGTH 3
#define MAX_WORD_LENGTH 4
#define MIN_HASH_VALUE 6
#define MAX_HASH_VALUE 127
/* maximum key range = 122, duplicates = 0 */
#ifdef __GNUC__
__inline
#else
#ifdef __cplusplus
inline
#endif
#endif
static unsigned int
hash (str, len)
register const char *str;
register unsigned int len;
{
static const unsigned char asso_values[] =
{
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 64,
58, 20, 15, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 10, 18, 3, 6, 1,
47, 0, 128, 42, 62, 30, 31, 0, 19, 52,
10, 24, 8, 30, 5, 3, 30, 8, 25, 47,
3, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
128, 128, 128, 128, 128, 128, 128
};
register int hval = 0;
switch (len)
{
default:
hval += asso_values[(unsigned char)str[3]];
/*FALLTHROUGH*/
case 3:
hval += asso_values[(unsigned char)str[2]];
/*FALLTHROUGH*/
case 2:
hval += asso_values[(unsigned char)str[1]+1];
/*FALLTHROUGH*/
case 1:
hval += asso_values[(unsigned char)str[0]];
break;
}
return hval;
}
#ifdef __GNUC__
__inline
#endif
const struct id3_compat *
id3_compat_lookup (str, len)
register const char *str;
register unsigned int len;
{
static const struct id3_compat wordlist[] =
{
#line 97 "compat.gperf"
{"TLE", EQ(TLEN) /* Length */},
#line 68 "compat.gperf"
{"ETC", EQ(ETCO) /* Event timing codes */},
#line 126 "compat.gperf"
{"ULT", EQ(USLT) /* Unsynchronised lyric/text transcription */},
#line 123 "compat.gperf"
{"TYE", OBSOLETE /* Year [obsolete] */},
#line 92 "compat.gperf"
{"TFT", EQ(TFLT) /* File type */},
#line 84 "compat.gperf"
{"TCM", EQ(TCOM) /* Composer */},
#line 66 "compat.gperf"
{"EQU", OBSOLETE /* Equalization [obsolete] */},
#line 63 "compat.gperf"
{"COM", EQ(COMM) /* Comments */},
#line 130 "compat.gperf"
{"WCM", EQ(WCOM) /* Commercial information */},
#line 96 "compat.gperf"
{"TLA", EQ(TLAN) /* Language(s) */},
#line 88 "compat.gperf"
{"TDA", OBSOLETE /* Date [obsolete] */},
#line 124 "compat.gperf"
{"TYER", OBSOLETE /* Year [obsolete] */},
#line 83 "compat.gperf"
{"TBP", EQ(TBPM) /* BPM (beats per minute) */},
#line 87 "compat.gperf"
{"TCR", EQ(TCOP) /* Copyright message */},
#line 104 "compat.gperf"
{"TOT", EQ(TOAL) /* Original album/movie/show title */},
#line 89 "compat.gperf"
{"TDAT", OBSOLETE /* Date [obsolete] */},
#line 67 "compat.gperf"
{"EQUA", OBSOLETE /* Equalization [obsolete] */},
#line 102 "compat.gperf"
{"TOR", EQ(TDOR) /* Original release year [obsolete] */},
#line 131 "compat.gperf"
{"WCP", EQ(WCOP) /* Copyright/legal information */},
#line 99 "compat.gperf"
{"TOA", EQ(TOPE) /* Original artist(s)/performer(s) */},
#line 78 "compat.gperf"
{"RVA", OBSOLETE /* Relative volume adjustment [obsolete] */},
#line 120 "compat.gperf"
{"TT3", EQ(TIT3) /* Subtitle/description refinement */},
#line 98 "compat.gperf"
{"TMT", EQ(TMED) /* Media type */},
#line 76 "compat.gperf"
{"POP", EQ(POPM) /* Popularimeter */},
#line 74 "compat.gperf"
{"MLL", EQ(MLLT) /* MPEG location lookup table */},
#line 79 "compat.gperf"
{"RVAD", OBSOLETE /* Relative volume adjustment [obsolete] */},
#line 65 "compat.gperf"
{"CRM", OBSOLETE /* Encrypted meta frame [obsolete] */},
#line 128 "compat.gperf"
{"WAR", EQ(WOAR) /* Official artist/performer webpage */},
#line 80 "compat.gperf"
{"SLT", EQ(SYLT) /* Synchronised lyric/text */},
#line 81 "compat.gperf"
{"STC", EQ(SYTC) /* Synchronised tempo codes */},
#line 95 "compat.gperf"
{"TKE", EQ(TKEY) /* Initial key */},
#line 111 "compat.gperf"
{"TRC", EQ(TSRC) /* ISRC (international standard recording code) */},
#line 109 "compat.gperf"
{"TPA", EQ(TPOS) /* Part of a set */},
#line 117 "compat.gperf"
{"TSS", EQ(TSSE) /* Software/hardware and settings used for encoding */},
#line 112 "compat.gperf"
{"TRD", OBSOLETE /* Recording dates [obsolete] */},
#line 64 "compat.gperf"
{"CRA", EQ(AENC) /* Audio encryption */},
#line 108 "compat.gperf"
{"TP4", EQ(TPE4) /* Interpreted, remixed, or otherwise modified by */},
#line 125 "compat.gperf"
{"UFI", EQ(UFID) /* Unique file identifier */},
#line 101 "compat.gperf"
{"TOL", EQ(TOLY) /* Original lyricist(s)/text writer(s) */},
#line 110 "compat.gperf"
{"TPB", EQ(TPUB) /* Publisher */},
#line 73 "compat.gperf"
{"MCI", EQ(MCDI) /* Music CD identifier */},
#line 107 "compat.gperf"
{"TP3", EQ(TPE3) /* Conductor/performer refinement */},
#line 132 "compat.gperf"
{"WPB", EQ(WPUB) /* Publishers official webpage */},
#line 113 "compat.gperf"
{"TRDA", OBSOLETE /* Recording dates [obsolete] */},
#line 115 "compat.gperf"
{"TSI", OBSOLETE /* Size [obsolete] */},
#line 90 "compat.gperf"
{"TDY", EQ(TDLY) /* Playlist delay */},
#line 82 "compat.gperf"
{"TAL", EQ(TALB) /* Album/movie/show title */},
#line 116 "compat.gperf"
{"TSIZ", OBSOLETE /* Size [obsolete] */},
#line 129 "compat.gperf"
{"WAS", EQ(WOAS) /* Official audio source webpage */},
#line 121 "compat.gperf"
{"TXT", EQ(TEXT) /* Lyricist/text writer */},
#line 62 "compat.gperf"
{"CNT", EQ(PCNT) /* Play counter */},
#line 100 "compat.gperf"
{"TOF", EQ(TOFN) /* Original filename */},
#line 85 "compat.gperf"
{"TCO", TX(TCON) /* Content type */},
#line 114 "compat.gperf"
{"TRK", EQ(TRCK) /* Track number/position in set */},
#line 119 "compat.gperf"
{"TT2", EQ(TIT2) /* Title/songname/content description */},
#line 93 "compat.gperf"
{"TIM", OBSOLETE /* Time [obsolete] */},
#line 94 "compat.gperf"
{"TIME", OBSOLETE /* Time [obsolete] */},
#line 103 "compat.gperf"
{"TORY", EQ(TDOR) /* Original release year [obsolete] */},
#line 91 "compat.gperf"
{"TEN", EQ(TENC) /* Encoded by */},
#line 118 "compat.gperf"
{"TT1", EQ(TIT1) /* Content group description */},
#line 127 "compat.gperf"
{"WAF", EQ(WOAF) /* Official audio file webpage */},
#line 75 "compat.gperf"
{"PIC", EQ(APIC) /* Attached picture */},
#line 122 "compat.gperf"
{"TXX", EQ(TXXX) /* User defined text information frame */},
#line 133 "compat.gperf"
{"WXX", EQ(WXXX) /* User defined URL link frame */},
#line 86 "compat.gperf"
{"TCON", TX(TCON) /* Content type */},
#line 77 "compat.gperf"
{"REV", EQ(RVRB) /* Reverb */},
#line 106 "compat.gperf"
{"TP2", EQ(TPE2) /* Band/orchestra/accompaniment */},
#line 105 "compat.gperf"
{"TP1", EQ(TPE1) /* Lead performer(s)/soloist(s) */},
#line 61 "compat.gperf"
{"BUF", EQ(RBUF) /* Recommended buffer size */},
#line 70 "compat.gperf"
{"IPL", EQ(TIPL) /* Involved people list */},
#line 69 "compat.gperf"
{"GEO", EQ(GEOB) /* General encapsulated object */},
#line 72 "compat.gperf"
{"LNK", EQ(LINK) /* Linked information */},
#line 71 "compat.gperf"
{"IPLS", EQ(TIPL) /* Involved people list */}
};
static const short lookup[] =
{
-1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, -1,
21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
-1, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, -1, -1, 50, -1, 51, 52, -1, 53, 54, 55, 56, -1,
57, 58, 59, 60, -1, 61, -1, 62, -1, -1, 63, -1, 64, -1,
-1, 65, -1, 66, -1, -1, -1, -1, -1, 67, -1, 68, -1, 69,
-1, 70, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 71, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 72
};
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
{
register int key = hash (str, len);
if (key <= MAX_HASH_VALUE && key >= 0)
{
register int index = lookup[key];
if (index >= 0)
{
register const char *s = wordlist[index].id;
if (*str == *s && !strncmp (str + 1, s + 1, len - 1) && s[len] == '\0')
return &wordlist[index];
}
}
}
return 0;
}
#line 134 "compat.gperf"
static
int translate_TCON(struct id3_frame *frame, char const *oldid,
id3_byte_t const *data, id3_length_t length)
{
id3_byte_t const *end;
enum id3_field_textencoding encoding;
id3_ucs4_t *string = 0, *ptr, *endptr;
int result = 0;
/* translate old TCON syntax into multiple strings */
assert(frame->nfields == 2);
encoding = ID3_FIELD_TEXTENCODING_ISO_8859_1;
end = data + length;
if (id3_field_parse(&frame->fields[0], &data, end - data, &encoding) == -1)
goto fail;
string = id3_parse_string(&data, end - data, encoding, 0);
if (string == 0)
goto fail;
ptr = string;
while (*ptr == '(') {
if (*++ptr == '(')
break;
endptr = ptr;
while (*endptr && *endptr != ')')
++endptr;
if (*endptr)
*endptr++ = 0;
if (id3_field_addstring(&frame->fields[1], ptr) == -1)
goto fail;
ptr = endptr;
}
if (*ptr && id3_field_addstring(&frame->fields[1], ptr) == -1)
goto fail;
if (0) {
fail:
result = -1;
}
if (string)
free(string);
return result;
}
/*
* NAME: compat->fixup()
* DESCRIPTION: finish compatibility translations
*/
int id3_compat_fixup(struct id3_tag *tag)
{
struct id3_frame *frame;
unsigned int index;
id3_ucs4_t timestamp[17] = { 0 };
int result = 0;
/* create a TDRC frame from obsolete TYER/TDAT/TIME frames */
/*
* TYE/TYER: YYYY
* TDA/TDAT: DDMM
* TIM/TIME: HHMM
*
* TDRC: yyyy-MM-ddTHH:mm
*/
index = 0;
while ((frame = id3_tag_findframe(tag, ID3_FRAME_OBSOLETE, index++))) {
char const *id;
id3_byte_t const *data, *end;
id3_length_t length;
enum id3_field_textencoding encoding;
id3_ucs4_t *string;
id = id3_field_getframeid(&frame->fields[0]);
assert(id);
if (strcmp(id, "TYER") != 0 && strcmp(id, "YTYE") != 0 &&
strcmp(id, "TDAT") != 0 && strcmp(id, "YTDA") != 0 &&
strcmp(id, "TIME") != 0 && strcmp(id, "YTIM") != 0)
continue;
data = id3_field_getbinarydata(&frame->fields[1], &length);
assert(data);
if (length < 1)
continue;
end = data + length;
encoding = id3_parse_uint(&data, 1);
string = id3_parse_string(&data, end - data, encoding, 0);
if (id3_ucs4_length(string) < 4) {
free(string);
continue;
}
if (strcmp(id, "TYER") == 0 ||
strcmp(id, "YTYE") == 0) {
timestamp[0] = string[0];
timestamp[1] = string[1];
timestamp[2] = string[2];
timestamp[3] = string[3];
}
else if (strcmp(id, "TDAT") == 0 ||
strcmp(id, "YTDA") == 0) {
timestamp[4] = '-';
timestamp[5] = string[2];
timestamp[6] = string[3];
timestamp[7] = '-';
timestamp[8] = string[0];
timestamp[9] = string[1];
}
else { /* TIME or YTIM */
timestamp[10] = 'T';
timestamp[11] = string[0];
timestamp[12] = string[1];
timestamp[13] = ':';
timestamp[14] = string[2];
timestamp[15] = string[3];
}
free(string);
}
if (timestamp[0]) {
id3_ucs4_t *strings;
frame = id3_frame_new("TDRC");
if (frame == 0)
goto fail;
strings = timestamp;
if (id3_field_settextencoding(&frame->fields[0],
ID3_FIELD_TEXTENCODING_ISO_8859_1) == -1 ||
id3_field_setstrings(&frame->fields[1], 1, &strings) == -1 ||
id3_tag_attachframe(tag, frame) == -1) {
id3_frame_delete(frame);
goto fail;
}
}
if (0) {
fail:
result = -1;
}
return result;
}
libid3tag/compat.h
+41
View File
@@ -0,0 +1,41 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: compat.h,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_COMPAT_H
# define LIBID3TAG_COMPAT_H
# include "id3tag.h"
typedef int id3_compat_func_t(struct id3_frame *, char const *,
id3_byte_t const *, id3_length_t);
struct id3_compat {
char const *id;
char const *equiv;
id3_compat_func_t *translate;
};
struct id3_compat const *id3_compat_lookup(register char const *,
register unsigned int);
int id3_compat_fixup(struct id3_tag *);
# endif
libid3tag/crc.c
+137
View File
@@ -0,0 +1,137 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: crc.c,v 1.11 2004/02/17 02:04:10 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include "id3tag.h"
# include "crc.h"
static
unsigned long const crc_table[256] = {
0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL,
0x076dc419L, 0x706af48fL, 0xe963a535L, 0x9e6495a3L,
0x0edb8832L, 0x79dcb8a4L, 0xe0d5e91eL, 0x97d2d988L,
0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, 0x90bf1d91L,
0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L,
0x136c9856L, 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL,
0x14015c4fL, 0x63066cd9L, 0xfa0f3d63L, 0x8d080df5L,
0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, 0xa2677172L,
0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L,
0x32d86ce3L, 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L,
0x26d930acL, 0x51de003aL, 0xc8d75180L, 0xbfd06116L,
0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, 0xb8bda50fL,
0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL,
0x76dc4190L, 0x01db7106L, 0x98d220bcL, 0xefd5102aL,
0x71b18589L, 0x06b6b51fL, 0x9fbfe4a5L, 0xe8b8d433L,
0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, 0xe10e9818L,
0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL,
0x6c0695edL, 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L,
0x65b0d9c6L, 0x12b7e950L, 0x8bbeb8eaL, 0xfcb9887cL,
0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, 0xfbd44c65L,
0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL,
0x4369e96aL, 0x346ed9fcL, 0xad678846L, 0xda60b8d0L,
0x44042d73L, 0x33031de5L, 0xaa0a4c5fL, 0xdd0d7cc9L,
0x5005713cL, 0x270241aaL, 0xbe0b1010L, 0xc90c2086L,
0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L,
0x59b33d17L, 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL,
0xedb88320L, 0x9abfb3b6L, 0x03b6e20cL, 0x74b1d29aL,
0xead54739L, 0x9dd277afL, 0x04db2615L, 0x73dc1683L,
0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L,
0xf00f9344L, 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL,
0xf762575dL, 0x806567cbL, 0x196c3671L, 0x6e6b06e7L,
0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, 0x67dd4accL,
0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L,
0xd1bb67f1L, 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL,
0xd80d2bdaL, 0xaf0a1b4cL, 0x36034af6L, 0x41047a60L,
0xdf60efc3L, 0xa867df55L, 0x316e8eefL, 0x4669be79L,
0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL,
0xc5ba3bbeL, 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L,
0xc2d7ffa7L, 0xb5d0cf31L, 0x2cd99e8bL, 0x5bdeae1dL,
0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, 0x026d930aL,
0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L,
0x92d28e9bL, 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L,
0x86d3d2d4L, 0xf1d4e242L, 0x68ddb3f8L, 0x1fda836eL,
0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, 0x18b74777L,
0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L,
0xa00ae278L, 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L,
0xa7672661L, 0xd06016f7L, 0x4969474dL, 0x3e6e77dbL,
0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, 0x37d83bf0L,
0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L,
0xbad03605L, 0xcdd70693L, 0x54de5729L, 0x23d967bfL,
0xb3667a2eL, 0xc4614ab8L, 0x5d681b02L, 0x2a6f2b94L,
0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, 0x2d02ef8dL
};
/*
* NAME: crc->compute()
* DESCRIPTION: calculate CRC-32 value (ISO 3309)
*/
unsigned long id3_crc_compute(id3_byte_t const *data, id3_length_t length)
{
register unsigned long crc;
for (crc = 0xffffffffL; length >= 8; length -= 8) {
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
}
switch (length) {
case 7: crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
case 6: crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
case 5: crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
case 4: crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
case 3: crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
case 2: crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
case 1: crc = crc_table[(crc ^ *data++) & 0xff] ^ (crc >> 8);
case 0: break;
}
return crc ^ 0xffffffffL;
}
libid3tag/crc.h
+29
View File
@@ -0,0 +1,29 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: crc.h,v 1.8 2004/02/17 02:04:10 rob Exp $
*/
# ifndef LIBID3TAG_CRC_H
# define LIBID3TAG_CRC_H
# include "id3tag.h"
unsigned long id3_crc_compute(id3_byte_t const *, id3_length_t);
# endif
libid3tag/debug.c
+222
View File
@@ -0,0 +1,222 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: debug.c,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# undef malloc
# undef calloc
# undef realloc
# undef free
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include "debug.h"
# if defined(DEBUG)
# define DEBUG_MAGIC 0xdeadbeefL
struct debug {
char const *file;
unsigned int line;
size_t size;
struct debug *next;
struct debug *prev;
long int magic;
};
static struct debug *allocated;
static int registered;
static
void check(void)
{
struct debug *debug;
for (debug = allocated; debug; debug = debug->next) {
if (debug->magic != DEBUG_MAGIC) {
fprintf(stderr, "memory corruption\n");
break;
}
fprintf(stderr, "%s:%u: leaked %lu bytes\n",
debug->file, debug->line, debug->size);
}
}
void *id3_debug_malloc(size_t size, char const *file, unsigned int line)
{
struct debug *debug;
if (!registered) {
atexit(check);
registered = 1;
}
if (size == 0)
fprintf(stderr, "%s:%u: malloc(0)\n", file, line);
debug = malloc(sizeof(*debug) + size);
if (debug == 0) {
fprintf(stderr, "%s:%u: malloc(%lu) failed\n", file, line, size);
return 0;
}
debug->magic = DEBUG_MAGIC;
debug->file = file;
debug->line = line;
debug->size = size;
debug->next = allocated;
debug->prev = 0;
if (allocated)
allocated->prev = debug;
allocated = debug;
return ++debug;
}
void *id3_debug_calloc(size_t nmemb, size_t size,
char const *file, unsigned int line)
{
void *ptr;
ptr = id3_debug_malloc(nmemb * size, file, line);
if (ptr)
memset(ptr, 0, nmemb * size);
return ptr;
}
void *id3_debug_realloc(void *ptr, size_t size,
char const *file, unsigned int line)
{
struct debug *debug, *new;
if (size == 0) {
id3_debug_free(ptr, file, line);
return 0;
}
if (ptr == 0)
return id3_debug_malloc(size, file, line);
debug = ptr;
--debug;
if (debug->magic != DEBUG_MAGIC) {
fprintf(stderr, "%s:%u: realloc(%p, %lu) memory not allocated\n",
file, line, ptr, size);
return 0;
}
new = realloc(debug, sizeof(*debug) + size);
if (new == 0) {
fprintf(stderr, "%s:%u: realloc(%p, %lu) failed\n", file, line, ptr, size);
return 0;
}
if (allocated == debug)
allocated = new;
debug = new;
debug->file = file;
debug->line = line;
debug->size = size;
if (debug->next)
debug->next->prev = debug;
if (debug->prev)
debug->prev->next = debug;
return ++debug;
}
void id3_debug_free(void *ptr, char const *file, unsigned int line)
{
struct debug *debug;
if (ptr == 0) {
fprintf(stderr, "%s:%u: free(0)\n", file, line);
return;
}
debug = ptr;
--debug;
if (debug->magic != DEBUG_MAGIC) {
fprintf(stderr, "%s:%u: free(%p) memory not allocated\n", file, line, ptr);
return;
}
debug->magic = 0;
if (debug->next)
debug->next->prev = debug->prev;
if (debug->prev)
debug->prev->next = debug->next;
if (allocated == debug)
allocated = debug->next;
free(debug);
}
void *id3_debug_release(void *ptr, char const *file, unsigned int line)
{
struct debug *debug;
if (ptr == 0)
return 0;
debug = ptr;
--debug;
if (debug->magic != DEBUG_MAGIC) {
fprintf(stderr, "%s:%u: release(%p) memory not allocated\n",
file, line, ptr);
return ptr;
}
if (debug->next)
debug->next->prev = debug->prev;
if (debug->prev)
debug->prev->next = debug->next;
if (allocated == debug)
allocated = debug->next;
memmove(debug, debug + 1, debug->size);
return debug;
}
# endif
libid3tag/debug.h
+34
View File
@@ -0,0 +1,34 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: debug.h,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_DEBUG_H
# define LIBID3TAG_DEBUG_H
# include <stdlib.h>
void *id3_debug_malloc(size_t, char const *, unsigned int);
void *id3_debug_calloc(size_t, size_t, char const *, unsigned int);
void *id3_debug_realloc(void *, size_t, char const *, unsigned int);
void id3_debug_free(void *, char const *, unsigned int);
void *id3_debug_release(void *, char const *, unsigned int);
# endif
libid3tag/field.c
+890
View File
@@ -0,0 +1,890 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: field.c,v 1.16 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include <string.h>
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include "id3tag.h"
# include "field.h"
# include "frame.h"
# include "render.h"
# include "ucs4.h"
# include "latin1.h"
# include "parse.h"
/*
* NAME: field->init()
* DESCRIPTION: initialize a field to a default value for the given type
*/
void id3_field_init(union id3_field *field, enum id3_field_type type)
{
assert(field);
switch (field->type = type) {
case ID3_FIELD_TYPE_TEXTENCODING:
case ID3_FIELD_TYPE_INT8:
case ID3_FIELD_TYPE_INT16:
case ID3_FIELD_TYPE_INT24:
case ID3_FIELD_TYPE_INT32:
field->number.value = 0;
break;
case ID3_FIELD_TYPE_LATIN1:
case ID3_FIELD_TYPE_LATIN1FULL:
field->latin1.ptr = 0;
break;
case ID3_FIELD_TYPE_LATIN1LIST:
field->latin1list.nstrings = 0;
field->latin1list.strings = 0;
case ID3_FIELD_TYPE_STRING:
case ID3_FIELD_TYPE_STRINGFULL:
field->string.ptr = 0;
break;
case ID3_FIELD_TYPE_STRINGLIST:
field->stringlist.nstrings = 0;
field->stringlist.strings = 0;
break;
case ID3_FIELD_TYPE_LANGUAGE:
strcpy(field->immediate.value, "XXX");
break;
case ID3_FIELD_TYPE_FRAMEID:
strcpy(field->immediate.value, "XXXX");
break;
case ID3_FIELD_TYPE_DATE:
memset(field->immediate.value, 0, sizeof(field->immediate.value));
break;
case ID3_FIELD_TYPE_INT32PLUS:
case ID3_FIELD_TYPE_BINARYDATA:
field->binary.data = 0;
field->binary.length = 0;
break;
}
}
/*
* NAME: field->finish()
* DESCRIPTION: reset a field, deallocating memory if necessary
*/
void id3_field_finish(union id3_field *field)
{
unsigned int i;
assert(field);
switch (field->type) {
case ID3_FIELD_TYPE_TEXTENCODING:
case ID3_FIELD_TYPE_INT8:
case ID3_FIELD_TYPE_INT16:
case ID3_FIELD_TYPE_INT24:
case ID3_FIELD_TYPE_INT32:
case ID3_FIELD_TYPE_LANGUAGE:
case ID3_FIELD_TYPE_FRAMEID:
case ID3_FIELD_TYPE_DATE:
break;
case ID3_FIELD_TYPE_LATIN1:
case ID3_FIELD_TYPE_LATIN1FULL:
if (field->latin1.ptr)
free(field->latin1.ptr);
break;
case ID3_FIELD_TYPE_LATIN1LIST:
for (i = 0; i < field->latin1list.nstrings; ++i)
free(field->latin1list.strings[i]);
if (field->latin1list.strings)
free(field->latin1list.strings);
break;
case ID3_FIELD_TYPE_STRING:
case ID3_FIELD_TYPE_STRINGFULL:
if (field->string.ptr)
free(field->string.ptr);
break;
case ID3_FIELD_TYPE_STRINGLIST:
for (i = 0; i < field->stringlist.nstrings; ++i)
free(field->stringlist.strings[i]);
if (field->stringlist.strings)
free(field->stringlist.strings);
break;
case ID3_FIELD_TYPE_INT32PLUS:
case ID3_FIELD_TYPE_BINARYDATA:
if (field->binary.data)
free(field->binary.data);
break;
}
id3_field_init(field, field->type);
}
/*
* NAME: field->type()
* DESCRIPTION: return the value type of a field
*/
enum id3_field_type id3_field_type(union id3_field const *field)
{
assert(field);
return field->type;
}
/*
* NAME: field->parse()
* DESCRIPTION: parse a field value
*/
int id3_field_parse(union id3_field *field, id3_byte_t const **ptr,
id3_length_t length, enum id3_field_textencoding *encoding)
{
assert(field);
id3_field_finish(field);
switch (field->type) {
case ID3_FIELD_TYPE_INT32:
if (length < 4)
goto fail;
field->number.value = id3_parse_uint(ptr, 4);
break;
case ID3_FIELD_TYPE_INT24:
if (length < 3)
goto fail;
field->number.value = id3_parse_uint(ptr, 3);
break;
case ID3_FIELD_TYPE_INT16:
if (length < 2)
goto fail;
field->number.value = id3_parse_uint(ptr, 2);
break;
case ID3_FIELD_TYPE_INT8:
case ID3_FIELD_TYPE_TEXTENCODING:
if (length < 1)
goto fail;
field->number.value = id3_parse_uint(ptr, 1);
if (field->type == ID3_FIELD_TYPE_TEXTENCODING)
*encoding = field->number.value;
break;
case ID3_FIELD_TYPE_LANGUAGE:
if (length < 3)
goto fail;
id3_parse_immediate(ptr, 3, field->immediate.value);
break;
case ID3_FIELD_TYPE_FRAMEID:
if (length < 4)
goto fail;
id3_parse_immediate(ptr, 4, field->immediate.value);
break;
case ID3_FIELD_TYPE_DATE:
if (length < 8)
goto fail;
id3_parse_immediate(ptr, 8, field->immediate.value);
break;
case ID3_FIELD_TYPE_LATIN1:
case ID3_FIELD_TYPE_LATIN1FULL:
{
id3_latin1_t *latin1;
latin1 = id3_parse_latin1(ptr, length,
field->type == ID3_FIELD_TYPE_LATIN1FULL);
if (latin1 == 0)
goto fail;
field->latin1.ptr = latin1;
}
break;
case ID3_FIELD_TYPE_LATIN1LIST:
{
id3_byte_t const *end;
id3_latin1_t *latin1, **strings;
end = *ptr + length;
while (end - *ptr > 0) {
latin1 = id3_parse_latin1(ptr, end - *ptr, 0);
if (latin1 == 0)
goto fail;
strings = realloc(field->latin1list.strings,
(field->latin1list.nstrings + 1) * sizeof(*strings));
if (strings == 0) {
free(latin1);
goto fail;
}
field->latin1list.strings = strings;
field->latin1list.strings[field->latin1list.nstrings++] = latin1;
}
}
break;
case ID3_FIELD_TYPE_STRING:
case ID3_FIELD_TYPE_STRINGFULL:
{
id3_ucs4_t *ucs4;
ucs4 = id3_parse_string(ptr, length, *encoding,
field->type == ID3_FIELD_TYPE_STRINGFULL);
if (ucs4 == 0)
goto fail;
field->string.ptr = ucs4;
}
break;
case ID3_FIELD_TYPE_STRINGLIST:
{
id3_byte_t const *end;
id3_ucs4_t *ucs4, **strings;
end = *ptr + length;
while (end - *ptr > 0) {
ucs4 = id3_parse_string(ptr, end - *ptr, *encoding, 0);
if (ucs4 == 0)
goto fail;
strings = realloc(field->stringlist.strings,
(field->stringlist.nstrings + 1) * sizeof(*strings));
if (strings == 0) {
free(ucs4);
goto fail;
}
field->stringlist.strings = strings;
field->stringlist.strings[field->stringlist.nstrings++] = ucs4;
}
}
break;
case ID3_FIELD_TYPE_INT32PLUS:
case ID3_FIELD_TYPE_BINARYDATA:
{
id3_byte_t *data;
data = id3_parse_binary(ptr, length);
if (data == 0)
goto fail;
field->binary.data = data;
field->binary.length = length;
}
break;
}
return 0;
fail:
return -1;
}
/*
* NAME: field->render()
* DESCRIPTION: render a field value
*/
id3_length_t id3_field_render(union id3_field const *field, id3_byte_t **ptr,
enum id3_field_textencoding *encoding,
int terminate)
{
id3_length_t size;
unsigned int i;
assert(field && encoding);
switch (field->type) {
case ID3_FIELD_TYPE_INT32:
return id3_render_int(ptr, field->number.value, 4);
case ID3_FIELD_TYPE_INT24:
return id3_render_int(ptr, field->number.value, 3);
case ID3_FIELD_TYPE_INT16:
return id3_render_int(ptr, field->number.value, 2);
case ID3_FIELD_TYPE_TEXTENCODING:
*encoding = field->number.value;
case ID3_FIELD_TYPE_INT8:
return id3_render_int(ptr, field->number.value, 1);
case ID3_FIELD_TYPE_LATIN1:
case ID3_FIELD_TYPE_LATIN1FULL:
return id3_render_latin1(ptr, field->latin1.ptr, terminate);
case ID3_FIELD_TYPE_LATIN1LIST:
size = 0;
for (i = 0; i < field->latin1list.nstrings; ++i) {
size += id3_render_latin1(ptr, field->latin1list.strings[i],
(i < field->latin1list.nstrings - 1) ||
terminate);
}
return size;
case ID3_FIELD_TYPE_STRING:
case ID3_FIELD_TYPE_STRINGFULL:
return id3_render_string(ptr, field->string.ptr, *encoding, terminate);
case ID3_FIELD_TYPE_STRINGLIST:
size = 0;
for (i = 0; i < field->stringlist.nstrings; ++i) {
size += id3_render_string(ptr, field->stringlist.strings[i], *encoding,
(i < field->stringlist.nstrings - 1) ||
terminate);
}
return size;
case ID3_FIELD_TYPE_LANGUAGE:
return id3_render_immediate(ptr, field->immediate.value, 3);
case ID3_FIELD_TYPE_FRAMEID:
return id3_render_immediate(ptr, field->immediate.value, 4);
case ID3_FIELD_TYPE_DATE:
return id3_render_immediate(ptr, field->immediate.value, 8);
case ID3_FIELD_TYPE_INT32PLUS:
case ID3_FIELD_TYPE_BINARYDATA:
return id3_render_binary(ptr, field->binary.data, field->binary.length);
}
return 0;
}
/*
* NAME: field->setint()
* DESCRIPTION: set the value of an int field
*/
int id3_field_setint(union id3_field *field, signed long number)
{
assert(field);
switch (field->type) {
case ID3_FIELD_TYPE_INT8:
if (number > 0x7f || number < -0x80)
return -1;
break;
case ID3_FIELD_TYPE_INT16:
if (number > 0x7fff || number < -0x8000)
return -1;
break;
case ID3_FIELD_TYPE_INT24:
if (number > 0x7fffffL || number < -0x800000L)
return -1;
break;
case ID3_FIELD_TYPE_INT32:
if (number > 0x7fffffffL || number < -0x80000000L)
return -1;
break;
default:
return -1;
}
id3_field_finish(field);
field->number.value = number;
return 0;
}
/*
* NAME: field->settextencoding()
* DESCRIPTION: set the value of a textencoding field
*/
int id3_field_settextencoding(union id3_field *field,
enum id3_field_textencoding encoding)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_TEXTENCODING)
return -1;
id3_field_finish(field);
field->number.value = encoding;
return 0;
}
static
int set_latin1(union id3_field *field, id3_latin1_t const *latin1)
{
id3_latin1_t *data;
if (latin1 == 0 || *latin1 == 0)
data = 0;
else {
data = id3_latin1_duplicate(latin1);
if (data == 0)
return -1;
}
field->latin1.ptr = data;
return 0;
}
/*
* NAME: field->setlatin1()
* DESCRIPTION: set the value of a latin1 field
*/
int id3_field_setlatin1(union id3_field *field, id3_latin1_t const *latin1)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_LATIN1)
return -1;
id3_field_finish(field);
if (latin1) {
id3_latin1_t const *ptr;
for (ptr = latin1; *ptr; ++ptr) {
if (*ptr == '\n')
return -1;
}
}
return set_latin1(field, latin1);
}
/*
* NAME: field->setfulllatin1()
* DESCRIPTION: set the value of a full latin1 field
*/
int id3_field_setfulllatin1(union id3_field *field, id3_latin1_t const *latin1)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_LATIN1FULL)
return -1;
id3_field_finish(field);
return set_latin1(field, latin1);
}
static
int set_string(union id3_field *field, id3_ucs4_t const *string)
{
id3_ucs4_t *data;
if (string == 0 || *string == 0)
data = 0;
else {
data = id3_ucs4_duplicate(string);
if (data == 0)
return -1;
}
field->string.ptr = data;
return 0;
}
/*
* NAME: field->setstring()
* DESCRIPTION: set the value of a string field
*/
int id3_field_setstring(union id3_field *field, id3_ucs4_t const *string)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_STRING)
return -1;
id3_field_finish(field);
if (string) {
id3_ucs4_t const *ptr;
for (ptr = string; *ptr; ++ptr) {
if (*ptr == '\n')
return -1;
}
}
return set_string(field, string);
}
/*
* NAME: field->setfullstring()
* DESCRIPTION: set the value of a full string field
*/
int id3_field_setfullstring(union id3_field *field, id3_ucs4_t const *string)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_STRINGFULL)
return -1;
id3_field_finish(field);
return set_string(field, string);
}
/*
* NAME: field->setstrings()
* DESCRIPTION: set the value of a stringlist field
*/
int id3_field_setstrings(union id3_field *field,
unsigned int length, id3_ucs4_t **ptrs)
{
id3_ucs4_t **strings;
unsigned int i;
assert(field);
if (field->type != ID3_FIELD_TYPE_STRINGLIST)
return -1;
id3_field_finish(field);
if (length == 0)
return 0;
strings = malloc(length * sizeof(*strings));
if (strings == 0)
return -1;
for (i = 0; i < length; ++i) {
strings[i] = id3_ucs4_duplicate(ptrs[i]);
if (strings[i] == 0) {
while (i--)
free(strings[i]);
free(strings);
return -1;
}
}
field->stringlist.strings = strings;
field->stringlist.nstrings = length;
return 0;
}
/*
* NAME: field->addstring()
* DESCRIPTION: add a string to a stringlist field
*/
int id3_field_addstring(union id3_field *field, id3_ucs4_t const *string)
{
id3_ucs4_t *new, **strings;
assert(field);
if (field->type != ID3_FIELD_TYPE_STRINGLIST)
return -1;
if (string == 0)
string = id3_ucs4_empty;
new = id3_ucs4_duplicate(string);
if (new == 0)
return -1;
strings = realloc(field->stringlist.strings,
(field->stringlist.nstrings + 1) * sizeof(*strings));
if (strings == 0) {
free(new);
return -1;
}
field->stringlist.strings = strings;
field->stringlist.strings[field->stringlist.nstrings++] = new;
return 0;
}
/*
* NAME: field->setlanguage()
* DESCRIPTION: set the value of a language field
*/
int id3_field_setlanguage(union id3_field *field, char const *language)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_LANGUAGE)
return -1;
id3_field_finish(field);
if (language) {
if (strlen(language) != 3)
return -1;
strcpy(field->immediate.value, language);
}
return 0;
}
/*
* NAME: field->setframeid()
* DESCRIPTION: set the value of a frameid field
*/
int id3_field_setframeid(union id3_field *field, char const *id)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_FRAMEID ||
!id3_frame_validid(id))
return -1;
id3_field_finish(field);
field->immediate.value[0] = id[0];
field->immediate.value[1] = id[1];
field->immediate.value[2] = id[2];
field->immediate.value[3] = id[3];
field->immediate.value[4] = 0;
return 0;
}
/*
* NAME: field->setbinarydata()
* DESCRIPTION: set the value of a binarydata field
*/
int id3_field_setbinarydata(union id3_field *field,
id3_byte_t const *data, id3_length_t length)
{
id3_byte_t *mem;
assert(field);
if (field->type != ID3_FIELD_TYPE_BINARYDATA)
return -1;
id3_field_finish(field);
if (length == 0)
mem = 0;
else {
mem = malloc(length);
if (mem == 0)
return -1;
assert(data);
memcpy(mem, data, length);
}
field->binary.data = mem;
field->binary.length = length;
return 0;
}
/*
* NAME: field->getint()
* DESCRIPTION: return the value of an integer field
*/
signed long id3_field_getint(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_INT8 &&
field->type != ID3_FIELD_TYPE_INT16 &&
field->type != ID3_FIELD_TYPE_INT24 &&
field->type != ID3_FIELD_TYPE_INT32)
return -1;
return field->number.value;
}
/*
* NAME: field->gettextencoding()
* DESCRIPTION: return the value of a text encoding field
*/
enum id3_field_textencoding
id3_field_gettextencoding(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_TEXTENCODING)
return -1;
return field->number.value;
}
/*
* NAME: field->getlatin1()
* DESCRIPTION: return the value of a latin1 field
*/
id3_latin1_t const *id3_field_getlatin1(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_LATIN1)
return 0;
return field->latin1.ptr ? field->latin1.ptr : (id3_latin1_t const *) "";
}
/*
* NAME: field->getfulllatin1()
* DESCRIPTION: return the value of a full latin1 field
*/
id3_latin1_t const *id3_field_getfulllatin1(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_LATIN1FULL)
return 0;
return field->latin1.ptr ? field->latin1.ptr : (id3_latin1_t const *) "";
}
/*
* NAME: field->getstring()
* DESCRIPTION: return the value of a string field
*/
id3_ucs4_t const *id3_field_getstring(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_STRING)
return 0;
return field->string.ptr ? field->string.ptr : id3_ucs4_empty;
}
/*
* NAME: field->getfullstring()
* DESCRIPTION: return the value of a fullstring field
*/
id3_ucs4_t const *id3_field_getfullstring(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_STRINGFULL)
return 0;
return field->string.ptr ? field->string.ptr : id3_ucs4_empty;
}
/*
* NAME: field->getnstrings()
* DESCRIPTION: return the number of strings in a stringlist field
*/
unsigned int id3_field_getnstrings(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_STRINGLIST)
return 0;
return field->stringlist.nstrings;
}
/*
* NAME: field->getstrings()
* DESCRIPTION: return one value of a stringlist field
*/
id3_ucs4_t const *id3_field_getstrings(union id3_field const *field,
unsigned int index)
{
id3_ucs4_t const *string;
assert(field);
if (field->type != ID3_FIELD_TYPE_STRINGLIST ||
index >= field->stringlist.nstrings)
return 0;
string = field->stringlist.strings[index];
return string ? string : id3_ucs4_empty;
}
/*
* NAME: field->getframeid()
* DESCRIPTION: return the value of a frameid field
*/
char const *id3_field_getframeid(union id3_field const *field)
{
assert(field);
if (field->type != ID3_FIELD_TYPE_FRAMEID)
return 0;
return field->immediate.value;
}
/*
* NAME: field->getbinarydata()
* DESCRIPTION: return the value of a binarydata field
*/
id3_byte_t const *id3_field_getbinarydata(union id3_field const *field,
id3_length_t *length)
{
static id3_byte_t const empty;
assert(field && length);
if (field->type != ID3_FIELD_TYPE_BINARYDATA)
return 0;
assert(field->binary.length == 0 || field->binary.data);
*length = field->binary.length;
return field->binary.data ? field->binary.data : &empty;
}
libid3tag/field.h
+36
View File
@@ -0,0 +1,36 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: field.h,v 1.9 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_FIELD_H
# define LIBID3TAG_FIELD_H
# include "id3tag.h"
void id3_field_init(union id3_field *, enum id3_field_type);
void id3_field_finish(union id3_field *);
int id3_field_parse(union id3_field *, id3_byte_t const **,
id3_length_t, enum id3_field_textencoding *);
id3_length_t id3_field_render(union id3_field const *, id3_byte_t **,
enum id3_field_textencoding *, int);
# endif
libid3tag/file.c
+674
View File
@@ -0,0 +1,674 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: file.c,v 1.21 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# ifdef HAVE_UNISTD_H
# include <unistd.h>
# endif
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include "id3tag.h"
# include "file.h"
# include "tag.h"
# include "field.h"
struct filetag {
struct id3_tag *tag;
unsigned long location;
id3_length_t length;
};
struct id3_file {
FILE *iofile;
enum id3_file_mode mode;
char *path;
int flags;
struct id3_tag *primary;
unsigned int ntags;
struct filetag *tags;
};
enum {
ID3_FILE_FLAG_ID3V1 = 0x0001
};
/*
* NAME: query_tag()
* DESCRIPTION: check for a tag at a file's current position
*/
static
signed long query_tag(FILE *iofile)
{
fpos_t save_position;
id3_byte_t query[ID3_TAG_QUERYSIZE];
signed long size;
if (fgetpos(iofile, &save_position) == -1)
return 0;
size = id3_tag_query(query, fread(query, 1, sizeof(query), iofile));
if (fsetpos(iofile, &save_position) == -1)
return 0;
return size;
}
/*
* NAME: read_tag()
* DESCRIPTION: read and parse a tag at a file's current position
*/
static
struct id3_tag *read_tag(FILE *iofile, id3_length_t size)
{
id3_byte_t *data;
struct id3_tag *tag = 0;
data = malloc(size);
if (data) {
if (fread(data, size, 1, iofile) == 1)
tag = id3_tag_parse(data, size);
free(data);
}
return tag;
}
/*
* NAME: update_primary()
* DESCRIPTION: update the primary tag with data from a new tag
*/
static
int update_primary(struct id3_tag *tag, struct id3_tag const *new)
{
unsigned int i;
struct id3_frame *frame;
if (new) {
if (!(new->extendedflags & ID3_TAG_EXTENDEDFLAG_TAGISANUPDATE))
id3_tag_clearframes(tag);
i = 0;
while ((frame = id3_tag_findframe(new, 0, i++))) {
if (id3_tag_attachframe(tag, frame) == -1)
return -1;
}
}
return 0;
}
/*
* NAME: tag_compare()
* DESCRIPTION: tag sort function for qsort()
*/
static
int tag_compare(const void *a, const void *b)
{
struct filetag const *tag1 = a, *tag2 = b;
if (tag1->location < tag2->location)
return -1;
else if (tag1->location > tag2->location)
return +1;
return 0;
}
/*
* NAME: add_filetag()
* DESCRIPTION: add a new file tag entry
*/
static
int add_filetag(struct id3_file *file, struct filetag const *filetag)
{
struct filetag *tags;
tags = realloc(file->tags, (file->ntags + 1) * sizeof(*tags));
if (tags == 0)
return -1;
file->tags = tags;
file->tags[file->ntags++] = *filetag;
/* sort tags by location */
if (file->ntags > 1)
qsort(file->tags, file->ntags, sizeof(file->tags[0]), tag_compare);
return 0;
}
/*
* NAME: del_filetag()
* DESCRIPTION: delete a file tag entry
*/
static
void del_filetag(struct id3_file *file, unsigned int index)
{
assert(index < file->ntags);
while (index < file->ntags - 1) {
file->tags[index] = file->tags[index + 1];
++index;
}
--file->ntags;
}
/*
* NAME: add_tag()
* DESCRIPTION: read, parse, and add a tag to a file structure
*/
static
struct id3_tag *add_tag(struct id3_file *file, id3_length_t length)
{
long location;
unsigned int i;
struct filetag filetag;
struct id3_tag *tag;
location = ftell(file->iofile);
if (location == -1)
return 0;
/* check for duplication/overlap */
{
unsigned long begin1, end1, begin2, end2;
begin1 = location;
end1 = begin1 + length;
for (i = 0; i < file->ntags; ++i) {
begin2 = file->tags[i].location;
end2 = begin2 + file->tags[i].length;
if (begin1 == begin2 && end1 == end2)
return file->tags[i].tag; /* duplicate */
if (begin1 < end2 && end1 > begin2)
return 0; /* overlap */
}
}
tag = read_tag(file->iofile, length);
filetag.tag = tag;
filetag.location = location;
filetag.length = length;
if (add_filetag(file, &filetag) == -1 ||
update_primary(file->primary, tag) == -1) {
if (tag)
id3_tag_delete(tag);
return 0;
}
if (tag)
id3_tag_addref(tag);
return tag;
}
/*
* NAME: search_tags()
* DESCRIPTION: search for tags in a file
*/
static
int search_tags(struct id3_file *file)
{
fpos_t save_position;
signed long size;
/*
* save the current seek position
*
* We also verify the stream is seekable by calling fsetpos(), since
* fgetpos() alone is not reliable enough for this purpose.
*
* [Apparently not even fsetpos() is sufficient under Win32.]
*/
if (fgetpos(file->iofile, &save_position) == -1 ||
fsetpos(file->iofile, &save_position) == -1)
return -1;
/* look for an ID3v1 tag */
if (fseek(file->iofile, -128, SEEK_END) == 0) {
size = query_tag(file->iofile);
if (size > 0) {
struct id3_tag const *tag;
tag = add_tag(file, size);
/* if this is indeed an ID3v1 tag, mark the file so */
if (tag && (ID3_TAG_VERSION_MAJOR(id3_tag_version(tag)) == 1))
file->flags |= ID3_FILE_FLAG_ID3V1;
}
}
/* look for a tag at the beginning of the file */
rewind(file->iofile);
size = query_tag(file->iofile);
if (size > 0) {
struct id3_tag const *tag;
struct id3_frame const *frame;
tag = add_tag(file, size);
/* locate tags indicated by SEEK frames */
while (tag && (frame = id3_tag_findframe(tag, "SEEK", 0))) {
long seek;
seek = id3_field_getint(id3_frame_field(frame, 0));
if (seek < 0 || fseek(file->iofile, seek, SEEK_CUR) == -1)
break;
size = query_tag(file->iofile);
tag = (size > 0) ? add_tag(file, size) : 0;
}
}
/* look for a tag at the end of the file (before any ID3v1 tag) */
if (fseek(file->iofile, ((file->flags & ID3_FILE_FLAG_ID3V1) ? -128 : 0) +
-10, SEEK_END) == 0) {
size = query_tag(file->iofile);
if (size < 0 && fseek(file->iofile, size, SEEK_CUR) == 0) {
size = query_tag(file->iofile);
if (size > 0)
add_tag(file, size);
}
}
clearerr(file->iofile);
/* restore seek position */
if (fsetpos(file->iofile, &save_position) == -1)
return -1;
/* set primary tag options and target padded length for convenience */
if ((file->ntags > 0 && !(file->flags & ID3_FILE_FLAG_ID3V1)) ||
(file->ntags > 1 && (file->flags & ID3_FILE_FLAG_ID3V1))) {
if (file->tags[0].location == 0)
id3_tag_setlength(file->primary, file->tags[0].length);
else
id3_tag_options(file->primary, ID3_TAG_OPTION_APPENDEDTAG, ~0);
}
return 0;
}
/*
* NAME: finish_file()
* DESCRIPTION: release memory associated with a file
*/
static
void finish_file(struct id3_file *file)
{
unsigned int i;
if (file->path)
free(file->path);
if (file->primary) {
id3_tag_delref(file->primary);
id3_tag_delete(file->primary);
}
for (i = 0; i < file->ntags; ++i) {
struct id3_tag *tag;
tag = file->tags[i].tag;
if (tag) {
id3_tag_delref(tag);
id3_tag_delete(tag);
}
}
if (file->tags)
free(file->tags);
free(file);
}
/*
* NAME: new_file()
* DESCRIPTION: create a new file structure and load tags
*/
static
struct id3_file *new_file(FILE *iofile, enum id3_file_mode mode,
char const *path)
{
struct id3_file *file;
file = malloc(sizeof(*file));
if (file == 0)
goto fail;
file->iofile = iofile;
file->mode = mode;
file->path = path ? strdup(path) : 0;
file->flags = 0;
file->ntags = 0;
file->tags = 0;
file->primary = id3_tag_new();
if (file->primary == 0)
goto fail;
id3_tag_addref(file->primary);
/* load tags from the file */
if (search_tags(file) == -1)
goto fail;
id3_tag_options(file->primary, ID3_TAG_OPTION_ID3V1,
(file->flags & ID3_FILE_FLAG_ID3V1) ? ~0 : 0);
if (0) {
fail:
if (file) {
finish_file(file);
file = 0;
}
}
return file;
}
/*
* NAME: file->open()
* DESCRIPTION: open a file given its pathname
*/
struct id3_file *id3_file_open(char const *path, enum id3_file_mode mode)
{
FILE *iofile;
struct id3_file *file;
assert(path);
iofile = fopen(path, (mode == ID3_FILE_MODE_READWRITE) ? "r+b" : "rb");
if (iofile == 0)
return 0;
file = new_file(iofile, mode, path);
if (file == 0)
fclose(iofile);
return file;
}
/*
* NAME: file->fdopen()
* DESCRIPTION: open a file using an existing file descriptor
*/
struct id3_file *id3_file_fdopen(int fd, enum id3_file_mode mode)
{
# if 1 || defined(HAVE_UNISTD_H)
FILE *iofile;
struct id3_file *file;
iofile = fdopen(fd, (mode == ID3_FILE_MODE_READWRITE) ? "r+b" : "rb");
if (iofile == 0)
return 0;
file = new_file(iofile, mode, 0);
if (file == 0) {
int save_fd;
/* close iofile without closing fd */
save_fd = dup(fd);
fclose(iofile);
dup2(save_fd, fd);
close(save_fd);
}
return file;
# else
return 0;
# endif
}
/*
* NAME: file->close()
* DESCRIPTION: close a file and delete its associated tags
*/
int id3_file_close(struct id3_file *file)
{
int result = 0;
assert(file);
if (fclose(file->iofile) == EOF)
result = -1;
finish_file(file);
return result;
}
/*
* NAME: file->tag()
* DESCRIPTION: return the primary tag structure for a file
*/
struct id3_tag *id3_file_tag(struct id3_file const *file)
{
assert(file);
return file->primary;
}
/*
* NAME: v1_write()
* DESCRIPTION: write ID3v1 tag modifications to a file
*/
static
int v1_write(struct id3_file *file,
id3_byte_t const *data, id3_length_t length)
{
assert(!data || length == 128);
if (data) {
long location;
if (fseek(file->iofile, (file->flags & ID3_FILE_FLAG_ID3V1) ? -128 : 0,
SEEK_END) == -1 ||
(location = ftell(file->iofile)) == -1 ||
fwrite(data, 128, 1, file->iofile) != 1 ||
fflush(file->iofile) == EOF)
return -1;
/* add file tag reference */
if (!(file->flags & ID3_FILE_FLAG_ID3V1)) {
struct filetag filetag;
filetag.tag = 0;
filetag.location = location;
filetag.length = 128;
if (add_filetag(file, &filetag) == -1)
return -1;
file->flags |= ID3_FILE_FLAG_ID3V1;
}
}
# if defined(HAVE_FTRUNCATE)
else if (file->flags & ID3_FILE_FLAG_ID3V1) {
long length;
if (fseek(file->iofile, 0, SEEK_END) == -1)
return -1;
length = ftell(file->iofile);
if (length == -1 ||
(length >= 0 && length < 128))
return -1;
if (ftruncate(fileno(file->iofile), length - 128) == -1)
return -1;
/* delete file tag reference */
del_filetag(file, file->ntags - 1);
file->flags &= ~ID3_FILE_FLAG_ID3V1;
}
# endif
return 0;
}
/*
* NAME: v2_write()
* DESCRIPTION: write ID3v2 tag modifications to a file
*/
static
int v2_write(struct id3_file *file,
id3_byte_t const *data, id3_length_t length)
{
assert(!data || length > 0);
if (data &&
((file->ntags == 1 && !(file->flags & ID3_FILE_FLAG_ID3V1)) ||
(file->ntags == 2 && (file->flags & ID3_FILE_FLAG_ID3V1))) &&
file->tags[0].length == length) {
/* easy special case: rewrite existing tag in-place */
if (fseek(file->iofile, file->tags[0].location, SEEK_SET) == -1 ||
fwrite(data, length, 1, file->iofile) != 1 ||
fflush(file->iofile) == EOF)
return -1;
goto done;
}
/* hard general case: rewrite entire file */
/* ... */
done:
return 0;
}
/*
* NAME: file->update()
* DESCRIPTION: rewrite tag(s) to a file
*/
int id3_file_update(struct id3_file *file)
{
int options, result = 0;
id3_length_t v1size = 0, v2size = 0;
id3_byte_t id3v1_data[128], *id3v1 = 0, *id3v2 = 0;
assert(file);
if (file->mode != ID3_FILE_MODE_READWRITE)
return -1;
options = id3_tag_options(file->primary, 0, 0);
/* render ID3v1 */
if (options & ID3_TAG_OPTION_ID3V1) {
v1size = id3_tag_render(file->primary, 0);
if (v1size) {
assert(v1size == sizeof(id3v1_data));
v1size = id3_tag_render(file->primary, id3v1_data);
if (v1size) {
assert(v1size == sizeof(id3v1_data));
id3v1 = id3v1_data;
}
}
}
/* render ID3v2 */
id3_tag_options(file->primary, ID3_TAG_OPTION_ID3V1, 0);
v2size = id3_tag_render(file->primary, 0);
if (v2size) {
id3v2 = malloc(v2size);
if (id3v2 == 0)
goto fail;
v2size = id3_tag_render(file->primary, id3v2);
if (v2size == 0) {
free(id3v2);
id3v2 = 0;
}
}
/* write tags */
if (v2_write(file, id3v2, v2size) == -1 ||
v1_write(file, id3v1, v1size) == -1)
goto fail;
rewind(file->iofile);
/* update file tags array? ... */
if (0) {
fail:
result = -1;
}
/* clean up; restore tag options */
if (id3v2)
free(id3v2);
id3_tag_options(file->primary, ~0, options);
return result;
}
libid3tag/file.h
+25
View File
@@ -0,0 +1,25 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: file.h,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_FILE_H
# define LIBID3TAG_FILE_H
# endif
libid3tag/frame.c
+626
View File
@@ -0,0 +1,626 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: frame.c,v 1.15 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include <string.h>
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include "id3tag.h"
# include "frame.h"
# include "frametype.h"
# include "compat.h"
# include "field.h"
# include "render.h"
# include "parse.h"
# include "util.h"
static
int valid_idchar(char c)
{
return (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9');
}
/*
* NAME: frame->validid()
* DESCRIPTION: return true if the parameter string is a legal frame ID
*/
int id3_frame_validid(char const *id)
{
return id &&
valid_idchar(id[0]) &&
valid_idchar(id[1]) &&
valid_idchar(id[2]) &&
valid_idchar(id[3]);
}
/*
* NAME: frame->new()
* DESCRIPTION: allocate and return a new frame
*/
struct id3_frame *id3_frame_new(char const *id)
{
struct id3_frametype const *frametype;
struct id3_frame *frame;
unsigned int i;
if (!id3_frame_validid(id))
return 0;
frametype = id3_frametype_lookup(id, 4);
if (frametype == 0) {
switch (id[0]) {
case 'T':
frametype = &id3_frametype_text;
break;
case 'W':
frametype = &id3_frametype_url;
break;
case 'X':
case 'Y':
case 'Z':
frametype = &id3_frametype_experimental;
break;
default:
frametype = &id3_frametype_unknown;
if (id3_compat_lookup(id, 4))
frametype = &id3_frametype_obsolete;
break;
}
}
frame = malloc(sizeof(*frame) + frametype->nfields * sizeof(*frame->fields));
if (frame) {
frame->id[0] = id[0];
frame->id[1] = id[1];
frame->id[2] = id[2];
frame->id[3] = id[3];
frame->id[4] = 0;
frame->description = frametype->description;
frame->refcount = 0;
frame->flags = frametype->defaultflags;
frame->group_id = 0;
frame->encryption_method = 0;
frame->encoded = 0;
frame->encoded_length = 0;
frame->decoded_length = 0;
frame->nfields = frametype->nfields;
frame->fields = (union id3_field *) &frame[1];
for (i = 0; i < frame->nfields; ++i)
id3_field_init(&frame->fields[i], frametype->fields[i]);
}
return frame;
}
void id3_frame_delete(struct id3_frame *frame)
{
assert(frame);
if (frame->refcount == 0) {
unsigned int i;
for (i = 0; i < frame->nfields; ++i)
id3_field_finish(&frame->fields[i]);
if (frame->encoded)
free(frame->encoded);
free(frame);
}
}
/*
* NAME: frame->addref()
* DESCRIPTION: add an external reference to a frame
*/
void id3_frame_addref(struct id3_frame *frame)
{
assert(frame);
++frame->refcount;
}
/*
* NAME: frame->delref()
* DESCRIPTION: remove an external reference to a frame
*/
void id3_frame_delref(struct id3_frame *frame)
{
assert(frame && frame->refcount > 0);
--frame->refcount;
}
/*
* NAME: frame->field()
* DESCRIPTION: return a pointer to a field in a frame
*/
union id3_field *id3_frame_field(struct id3_frame const *frame,
unsigned int index)
{
assert(frame);
return (index < frame->nfields) ? &frame->fields[index] : 0;
}
static
struct id3_frame *obsolete(char const *id, id3_byte_t const *data,
id3_length_t length)
{
struct id3_frame *frame;
frame = id3_frame_new(ID3_FRAME_OBSOLETE);
if (frame) {
if (id3_field_setframeid(&frame->fields[0], id) == -1 ||
id3_field_setbinarydata(&frame->fields[1], data, length) == -1)
goto fail;
}
if (0) {
fail:
if (frame) {
id3_frame_delete(frame);
frame = 0;
}
}
return frame;
}
static
struct id3_frame *unparseable(char const *id, id3_byte_t const **ptr,
id3_length_t length, int flags,
int group_id, int encryption_method,
id3_length_t decoded_length)
{
struct id3_frame *frame = 0;
id3_byte_t *mem;
mem = malloc(length ? length : 1);
if (mem == 0)
goto fail;
frame = id3_frame_new(id);
if (frame == 0)
free(mem);
else {
memcpy(mem, *ptr, length);
frame->flags = flags;
frame->group_id = group_id;
frame->encryption_method = encryption_method;
frame->encoded = mem;
frame->encoded_length = length;
frame->decoded_length = decoded_length;
}
if (0) {
fail:
;
}
*ptr += length;
return frame;
}
static
int parse_data(struct id3_frame *frame,
id3_byte_t const *data, id3_length_t length)
{
enum id3_field_textencoding encoding;
id3_byte_t const *end;
unsigned int i;
encoding = ID3_FIELD_TEXTENCODING_ISO_8859_1;
end = data + length;
for (i = 0; i < frame->nfields; ++i) {
if (id3_field_parse(&frame->fields[i], &data, end - data, &encoding) == -1)
return -1;
}
return 0;
}
/*
* NAME: frame->parse()
* DESCRIPTION: parse raw frame data according to the specified ID3 tag version
*/
struct id3_frame *id3_frame_parse(id3_byte_t const **ptr, id3_length_t length,
unsigned int version)
{
struct id3_frame *frame = 0;
id3_byte_t const *id, *end, *data;
id3_length_t size, decoded_length = 0;
int flags = 0, group_id = 0, encryption_method = 0;
struct id3_compat const *compat = 0;
id3_byte_t *mem = 0;
char xid[4];
id = *ptr;
end = *ptr + length;
if (ID3_TAG_VERSION_MAJOR(version) < 4) {
switch (ID3_TAG_VERSION_MAJOR(version)) {
case 2:
if (length < 6)
goto fail;
compat = id3_compat_lookup(id, 3);
*ptr += 3;
size = id3_parse_uint(ptr, 3);
if (size > end - *ptr)
goto fail;
end = *ptr + size;
break;
case 3:
if (length < 10)
goto fail;
compat = id3_compat_lookup(id, 4);
*ptr += 4;
size = id3_parse_uint(ptr, 4);
flags = id3_parse_uint(ptr, 2);
if (size > end - *ptr)
goto fail;
end = *ptr + size;
if (flags & (ID3_FRAME_FLAG_FORMATFLAGS & ~0x00e0)) {
frame = unparseable(id, ptr, end - *ptr, 0, 0, 0, 0);
goto done;
}
flags =
((flags >> 1) & ID3_FRAME_FLAG_STATUSFLAGS) |
((flags >> 4) & (ID3_FRAME_FLAG_COMPRESSION |
ID3_FRAME_FLAG_ENCRYPTION)) |
((flags << 1) & ID3_FRAME_FLAG_GROUPINGIDENTITY);
if (flags & ID3_FRAME_FLAG_COMPRESSION) {
if (end - *ptr < 4)
goto fail;
decoded_length = id3_parse_uint(ptr, 4);
}
if (flags & ID3_FRAME_FLAG_ENCRYPTION) {
if (end - *ptr < 1)
goto fail;
encryption_method = id3_parse_uint(ptr, 1);
}
if (flags & ID3_FRAME_FLAG_GROUPINGIDENTITY) {
if (end - *ptr < 1)
goto fail;
group_id = id3_parse_uint(ptr, 1);
}
break;
default:
goto fail;
}
/* canonicalize frame ID for ID3v2.4 */
if (compat && compat->equiv)
id = compat->equiv;
else if (ID3_TAG_VERSION_MAJOR(version) == 2) {
xid[0] = 'Y';
xid[1] = id[0];
xid[2] = id[1];
xid[3] = id[2];
id = xid;
flags |=
ID3_FRAME_FLAG_TAGALTERPRESERVATION |
ID3_FRAME_FLAG_FILEALTERPRESERVATION;
}
}
else { /* ID3v2.4 */
if (length < 10)
goto fail;
*ptr += 4;
size = id3_parse_syncsafe(ptr, 4);
flags = id3_parse_uint(ptr, 2);
if (size > end - *ptr)
goto fail;
end = *ptr + size;
if (flags & (ID3_FRAME_FLAG_FORMATFLAGS & ~ID3_FRAME_FLAG_KNOWNFLAGS)) {
frame = unparseable(id, ptr, end - *ptr, flags, 0, 0, 0);
goto done;
}
if (flags & ID3_FRAME_FLAG_GROUPINGIDENTITY) {
if (end - *ptr < 1)
goto fail;
group_id = id3_parse_uint(ptr, 1);
}
if ((flags & ID3_FRAME_FLAG_COMPRESSION) &&
!(flags & ID3_FRAME_FLAG_DATALENGTHINDICATOR))
goto fail;
if (flags & ID3_FRAME_FLAG_ENCRYPTION) {
if (end - *ptr < 1)
goto fail;
encryption_method = id3_parse_uint(ptr, 1);
}
if (flags & ID3_FRAME_FLAG_DATALENGTHINDICATOR) {
if (end - *ptr < 4)
goto fail;
decoded_length = id3_parse_syncsafe(ptr, 4);
}
}
data = *ptr;
*ptr = end;
/* undo frame encodings */
if ((flags & ID3_FRAME_FLAG_UNSYNCHRONISATION) && end - data > 0) {
mem = malloc(end - data);
if (mem == 0)
goto fail;
memcpy(mem, data, end - data);
end = mem + id3_util_deunsynchronise(mem, end - data);
data = mem;
}
if (flags & ID3_FRAME_FLAG_ENCRYPTION) {
frame = unparseable(id, &data, end - data, flags,
group_id, encryption_method, decoded_length);
goto done;
}
if (flags & ID3_FRAME_FLAG_COMPRESSION) {
id3_byte_t *decomp;
decomp = id3_util_decompress(data, end - data, decoded_length);
if (decomp == 0)
goto fail;
if (mem)
free(mem);
data = mem = decomp;
end = data + decoded_length;
}
/* check for obsolescence */
if (compat && !compat->equiv) {
frame = obsolete(id, data, end - data);
goto done;
}
/* generate the internal frame structure */
frame = id3_frame_new(id);
if (frame) {
frame->flags = flags;
frame->group_id = group_id;
if (compat && compat->translate) {
if (compat->translate(frame, compat->id, data, end - data) == -1)
goto fail;
}
else {
if (parse_data(frame, data, end - data) == -1)
goto fail;
}
}
if (0) {
fail:
if (frame) {
id3_frame_delete(frame);
frame = 0;
}
}
done:
if (mem)
free(mem);
return frame;
}
static
id3_length_t render_data(id3_byte_t **ptr,
union id3_field *fields, unsigned int length)
{
id3_length_t size = 0;
enum id3_field_textencoding encoding;
unsigned int i;
encoding = ID3_FIELD_TEXTENCODING_ISO_8859_1;
for (i = 0; i < length; ++i)
size += id3_field_render(&fields[i], ptr, &encoding, i < length - 1);
return size;
}
/*
* NAME: frame->render()
* DESCRIPTION: render a single, complete frame
*/
id3_length_t id3_frame_render(struct id3_frame const *frame,
id3_byte_t **ptr, int options)
{
id3_length_t size = 0, decoded_length, datalen;
id3_byte_t *size_ptr = 0, *flags_ptr = 0, *data = 0;
int flags;
assert(frame);
if ((frame->flags & ID3_FRAME_FLAG_TAGALTERPRESERVATION) ||
((options & ID3_TAG_OPTION_FILEALTERED) &&
(frame->flags & ID3_FRAME_FLAG_FILEALTERPRESERVATION)))
return 0;
/* a frame must be at least 1 byte big, excluding the header */
decoded_length = render_data(0, frame->fields, frame->nfields);
if (decoded_length == 0 && frame->encoded == 0)
return 0;
/* header */
size += id3_render_immediate(ptr, frame->id, 4);
if (ptr)
size_ptr = *ptr;
size += id3_render_syncsafe(ptr, 0, 4);
if (ptr)
flags_ptr = *ptr;
flags = frame->flags;
size += id3_render_int(ptr, flags, 2);
if (flags & (ID3_FRAME_FLAG_FORMATFLAGS & ~ID3_FRAME_FLAG_KNOWNFLAGS)) {
size += id3_render_binary(ptr, frame->encoded, frame->encoded_length);
if (size_ptr)
id3_render_syncsafe(&size_ptr, size - 10, 4);
return size;
}
flags &= ID3_FRAME_FLAG_KNOWNFLAGS;
flags &= ~ID3_FRAME_FLAG_UNSYNCHRONISATION;
if (options & ID3_TAG_OPTION_UNSYNCHRONISATION)
flags |= ID3_FRAME_FLAG_UNSYNCHRONISATION;
if (!(flags & ID3_FRAME_FLAG_ENCRYPTION)) {
flags &= ~ID3_FRAME_FLAG_COMPRESSION;
if (options & ID3_TAG_OPTION_COMPRESSION)
flags |= ID3_FRAME_FLAG_COMPRESSION | ID3_FRAME_FLAG_DATALENGTHINDICATOR;
}
if (flags & ID3_FRAME_FLAG_GROUPINGIDENTITY)
size += id3_render_int(ptr, frame->group_id, 1);
if (flags & ID3_FRAME_FLAG_ENCRYPTION)
size += id3_render_int(ptr, frame->encryption_method, 1);
if (flags & ID3_FRAME_FLAG_DATALENGTHINDICATOR) {
if (flags & ID3_FRAME_FLAG_ENCRYPTION)
decoded_length = frame->decoded_length;
size += id3_render_syncsafe(ptr, decoded_length, 4);
}
if (ptr)
data = *ptr;
if (flags & ID3_FRAME_FLAG_ENCRYPTION)
datalen = id3_render_binary(ptr, frame->encoded, frame->encoded_length);
else {
if (ptr == 0)
datalen = decoded_length;
else {
datalen = render_data(ptr, frame->fields, frame->nfields);
if (flags & ID3_FRAME_FLAG_COMPRESSION) {
id3_byte_t *comp;
id3_length_t complen;
comp = id3_util_compress(data, datalen, &complen);
if (comp == 0)
flags &= ~ID3_FRAME_FLAG_COMPRESSION;
else {
*ptr = data;
datalen = id3_render_binary(ptr, comp, complen);
free(comp);
}
}
}
}
/* unsynchronisation */
if (flags & ID3_FRAME_FLAG_UNSYNCHRONISATION) {
if (data == 0)
datalen *= 2;
else {
id3_length_t newlen;
newlen = id3_util_unsynchronise(data, datalen);
if (newlen == datalen)
flags &= ~ID3_FRAME_FLAG_UNSYNCHRONISATION;
else {
*ptr += newlen - datalen;
datalen = newlen;
}
}
}
size += datalen;
/* patch size and flags */
if (size_ptr)
id3_render_syncsafe(&size_ptr, size - 10, 4);
if (flags_ptr)
id3_render_int(&flags_ptr, flags, 2);
return size;
}
libid3tag/frame.h
+36
View File
@@ -0,0 +1,36 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: frame.h,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_FRAME_H
# define LIBID3TAG_FRAME_H
# include "id3tag.h"
int id3_frame_validid(char const *);
void id3_frame_addref(struct id3_frame *);
void id3_frame_delref(struct id3_frame *);
struct id3_frame *id3_frame_parse(id3_byte_t const **, id3_length_t,
unsigned int);
id3_length_t id3_frame_render(struct id3_frame const *, id3_byte_t **, int);
# endif
libid3tag/frametype.c
+568
View File
@@ -0,0 +1,568 @@
/* C code produced by gperf version 3.0.1 */
/* Command-line: gperf -tCcTonD -K id -N id3_frametype_lookup -s -3 -k '*' frametype.gperf */
#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
&& ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
&& (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
&& ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
&& ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
&& ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
&& ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
&& ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
&& ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
&& ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
&& ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
&& ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
&& ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
&& ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
&& ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
&& ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
&& ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
&& ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
&& ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
&& ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
&& ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
&& ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
&& ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
/* The character set is not based on ISO-646. */
error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
#endif
#line 1 "frametype.gperf"
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* Id: frametype.gperf,v 1.7 2004/01/23 09:41:32 rob Exp
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <string.h>
# include "id3tag.h"
# include "frametype.h"
# define FIELDS(id) static enum id3_field_type const fields_##id[]
/* frame field descriptions */
FIELDS(UFID) = {
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(TXXX) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_STRING
};
FIELDS(WXXX) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_LATIN1
};
FIELDS(MCDI) = {
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(ETCO) = {
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(MLLT) = {
ID3_FIELD_TYPE_INT16,
ID3_FIELD_TYPE_INT24,
ID3_FIELD_TYPE_INT24,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(SYTC) = {
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(USLT) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LANGUAGE,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_STRINGFULL
};
FIELDS(SYLT) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LANGUAGE,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(COMM) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LANGUAGE,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_STRINGFULL
};
FIELDS(RVA2) = {
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(EQU2) = {
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(RVRB) = {
ID3_FIELD_TYPE_INT16,
ID3_FIELD_TYPE_INT16,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT8
};
FIELDS(APIC) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(GEOB) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(PCNT) = {
ID3_FIELD_TYPE_INT32PLUS
};
FIELDS(POPM) = {
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT32PLUS
};
FIELDS(RBUF) = {
ID3_FIELD_TYPE_INT24,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT32
};
FIELDS(AENC) = {
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_INT16,
ID3_FIELD_TYPE_INT16,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(LINK) = {
ID3_FIELD_TYPE_FRAMEID,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_LATIN1LIST
};
FIELDS(POSS) = {
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(USER) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LANGUAGE,
ID3_FIELD_TYPE_STRING
};
FIELDS(OWNE) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_DATE,
ID3_FIELD_TYPE_STRING
};
FIELDS(COMR) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_DATE,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(ENCR) = {
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(GRID) = {
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(PRIV) = {
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(SIGN) = {
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(SEEK) = {
ID3_FIELD_TYPE_INT32
};
FIELDS(ASPI) = {
ID3_FIELD_TYPE_INT32,
ID3_FIELD_TYPE_INT32,
ID3_FIELD_TYPE_INT16,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(text) = {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_STRINGLIST
};
FIELDS(url) = {
ID3_FIELD_TYPE_LATIN1
};
FIELDS(unknown) = {
ID3_FIELD_TYPE_BINARYDATA
};
FIELDS(ZOBS) = {
ID3_FIELD_TYPE_FRAMEID,
ID3_FIELD_TYPE_BINARYDATA
};
# define FRAME(id) \
sizeof(fields_##id) / sizeof(fields_##id[0]), fields_##id
# define PRESERVE 0
# define DISCARD ID3_FRAME_FLAG_FILEALTERPRESERVATION
# define OBSOLETE (DISCARD | ID3_FRAME_FLAG_TAGALTERPRESERVATION)
# define FRAMETYPE(type, id, flags, desc) \
struct id3_frametype const id3_frametype_##type = { \
0, FRAME(id), flags, desc \
}
/* static frame types */
FRAMETYPE(text, text, PRESERVE, "Unknown text information frame");
FRAMETYPE(url, url, PRESERVE, "Unknown URL link frame");
FRAMETYPE(experimental, unknown, PRESERVE, "Experimental frame");
FRAMETYPE(unknown, unknown, PRESERVE, "Unknown frame");
FRAMETYPE(obsolete, unknown, OBSOLETE, "Obsolete frame");
#define TOTAL_KEYWORDS 84
#define MIN_WORD_LENGTH 4
#define MAX_WORD_LENGTH 4
#define MIN_HASH_VALUE 7
#define MAX_HASH_VALUE 155
/* maximum key range = 149, duplicates = 0 */
#ifdef __GNUC__
__inline
#else
#ifdef __cplusplus
inline
#endif
#endif
static unsigned int
hash (str, len)
register const char *str;
register unsigned int len;
{
static const unsigned char asso_values[] =
{
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
43, 4, 47, 49, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 31, 53, 3, 15, 3,
24, 25, 10, 52, 69, 34, 23, 30, 1, 5,
10, 62, 20, 0, 28, 28, 22, 19, 47, 3,
10, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156, 156, 156, 156,
156, 156, 156, 156, 156, 156, 156
};
return asso_values[(unsigned char)str[3]+1] + asso_values[(unsigned char)str[2]] + asso_values[(unsigned char)str[1]] + asso_values[(unsigned char)str[0]];
}
#ifdef __GNUC__
__inline
#endif
const struct id3_frametype *
id3_frametype_lookup (str, len)
register const char *str;
register unsigned int len;
{
static const struct id3_frametype wordlist[] =
{
#line 282 "frametype.gperf"
{"ENCR", FRAME(ENCR), PRESERVE, "Encryption method registration"},
#line 292 "frametype.gperf"
{"POPM", FRAME(POPM), PRESERVE, "Popularimeter"},
#line 351 "frametype.gperf"
{"WCOM", FRAME(url), PRESERVE, "Commercial information"},
#line 298 "frametype.gperf"
{"SEEK", FRAME(SEEK), DISCARD, "Seek frame"},
#line 349 "frametype.gperf"
{"USER", FRAME(USER), PRESERVE, "Terms of use"},
#line 285 "frametype.gperf"
{"GEOB", FRAME(GEOB), PRESERVE, "General encapsulated object"},
#line 304 "frametype.gperf"
{"TCOM", FRAME(text), PRESERVE, "Composer"},
#line 281 "frametype.gperf"
{"COMR", FRAME(COMR), PRESERVE, "Commercial frame"},
#line 280 "frametype.gperf"
{"COMM", FRAME(COMM), PRESERVE, "Comments"},
#line 305 "frametype.gperf"
{"TCON", FRAME(text), PRESERVE, "Content type"},
#line 291 "frametype.gperf"
{"PCNT", FRAME(PCNT), PRESERVE, "Play counter"},
#line 293 "frametype.gperf"
{"POSS", FRAME(POSS), DISCARD, "Position synchronisation frame"},
#line 284 "frametype.gperf"
{"ETCO", FRAME(ETCO), DISCARD, "Event timing codes"},
#line 332 "frametype.gperf"
{"TPE2", FRAME(text), PRESERVE, "Band/orchestra/accompaniment"},
#line 301 "frametype.gperf"
{"SYTC", FRAME(SYTC), DISCARD, "Synchronised tempo codes"},
#line 313 "frametype.gperf"
{"TENC", FRAME(text), DISCARD, "Encoded by"},
#line 309 "frametype.gperf"
{"TDOR", FRAME(text), PRESERVE, "Original release time"},
#line 290 "frametype.gperf"
{"OWNE", FRAME(OWNE), PRESERVE, "Ownership frame"},
#line 277 "frametype.gperf"
{"AENC", FRAME(AENC), DISCARD, "Audio encryption"},
#line 307 "frametype.gperf"
{"TDEN", FRAME(text), PRESERVE, "Encoding time"},
#line 345 "frametype.gperf"
{"TSSE", FRAME(text), PRESERVE, "Software/hardware and settings used for encoding"},
#line 339 "frametype.gperf"
{"TRSN", FRAME(text), PRESERVE, "Internet radio station name"},
#line 300 "frametype.gperf"
{"SYLT", FRAME(SYLT), DISCARD, "Synchronised lyric/text"},
#line 354 "frametype.gperf"
{"WOAR", FRAME(url), PRESERVE, "Official artist/performer webpage"},
#line 346 "frametype.gperf"
{"TSST", FRAME(text), PRESERVE, "Set subtitle"},
#line 330 "frametype.gperf"
{"TOWN", FRAME(text), PRESERVE, "File owner/licensee"},
#line 340 "frametype.gperf"
{"TRSO", FRAME(text), PRESERVE, "Internet radio station owner"},
#line 322 "frametype.gperf"
{"TLEN", FRAME(text), DISCARD, "Length"},
#line 358 "frametype.gperf"
{"WPUB", FRAME(url), PRESERVE, "Publishers official webpage"},
#line 343 "frametype.gperf"
{"TSOT", FRAME(text), PRESERVE, "Title sort order"},
#line 327 "frametype.gperf"
{"TOFN", FRAME(text), PRESERVE, "Original filename"},
#line 344 "frametype.gperf"
{"TSRC", FRAME(text), PRESERVE, "ISRC (international standard recording code)"},
#line 324 "frametype.gperf"
{"TMED", FRAME(text), PRESERVE, "Media type"},
#line 297 "frametype.gperf"
{"RVRB", FRAME(RVRB), PRESERVE, "Reverb"},
#line 328 "frametype.gperf"
{"TOLY", FRAME(text), PRESERVE, "Original lyricist(s)/text writer(s)"},
#line 329 "frametype.gperf"
{"TOPE", FRAME(text), PRESERVE, "Original artist(s)/performer(s)"},
#line 336 "frametype.gperf"
{"TPRO", FRAME(text), PRESERVE, "Produced notice"},
#line 337 "frametype.gperf"
{"TPUB", FRAME(text), PRESERVE, "Publisher"},
#line 357 "frametype.gperf"
{"WPAY", FRAME(url), PRESERVE, "Payment"},
#line 335 "frametype.gperf"
{"TPOS", FRAME(text), PRESERVE, "Part of a set"},
#line 356 "frametype.gperf"
{"WORS", FRAME(url), PRESERVE, "Official Internet radio station homepage"},
#line 325 "frametype.gperf"
{"TMOO", FRAME(text), PRESERVE, "Mood"},
#line 338 "frametype.gperf"
{"TRCK", FRAME(text), PRESERVE, "Track number/position in set"},
#line 320 "frametype.gperf"
{"TKEY", FRAME(text), PRESERVE, "Initial key"},
#line 308 "frametype.gperf"
{"TDLY", FRAME(text), PRESERVE, "Playlist delay"},
#line 296 "frametype.gperf"
{"RVA2", FRAME(RVA2), DISCARD, "Relative volume adjustment (2)"},
#line 310 "frametype.gperf"
{"TDRC", FRAME(text), PRESERVE, "Recording time"},
#line 350 "frametype.gperf"
{"USLT", FRAME(USLT), PRESERVE, "Unsynchronised lyric/text transcription"},
#line 353 "frametype.gperf"
{"WOAF", FRAME(url), PRESERVE, "Official audio file webpage"},
#line 312 "frametype.gperf"
{"TDTG", FRAME(text), PRESERVE, "Tagging time"},
#line 299 "frametype.gperf"
{"SIGN", FRAME(SIGN), PRESERVE, "Signature frame"},
#line 355 "frametype.gperf"
{"WOAS", FRAME(url), PRESERVE, "Official audio source webpage"},
#line 331 "frametype.gperf"
{"TPE1", FRAME(text), PRESERVE, "Lead performer(s)/soloist(s)"},
#line 302 "frametype.gperf"
{"TALB", FRAME(text), PRESERVE, "Album/movie/show title"},
#line 341 "frametype.gperf"
{"TSOA", FRAME(text), PRESERVE, "Album sort order"},
#line 321 "frametype.gperf"
{"TLAN", FRAME(text), PRESERVE, "Language(s)"},
#line 333 "frametype.gperf"
{"TPE3", FRAME(text), PRESERVE, "Conductor/performer refinement"},
#line 352 "frametype.gperf"
{"WCOP", FRAME(url), PRESERVE, "Copyright/legal information"},
#line 334 "frametype.gperf"
{"TPE4", FRAME(text), PRESERVE, "Interpreted, remixed, or otherwise modified by"},
#line 323 "frametype.gperf"
{"TMCL", FRAME(text), PRESERVE, "Musician credits list"},
#line 303 "frametype.gperf"
{"TBPM", FRAME(text), PRESERVE, "BPM (beats per minute)"},
#line 311 "frametype.gperf"
{"TDRL", FRAME(text), PRESERVE, "Release time"},
#line 326 "frametype.gperf"
{"TOAL", FRAME(text), PRESERVE, "Original album/movie/show title"},
#line 342 "frametype.gperf"
{"TSOP", FRAME(text), PRESERVE, "Performer sort order"},
#line 363 "frametype.gperf"
{"ZOBS", FRAME(ZOBS), OBSOLETE, "Obsolete frame"},
#line 283 "frametype.gperf"
{"EQU2", FRAME(EQU2), DISCARD, "Equalisation (2)"},
#line 306 "frametype.gperf"
{"TCOP", FRAME(text), PRESERVE, "Copyright message"},
#line 287 "frametype.gperf"
{"LINK", FRAME(LINK), PRESERVE, "Linked information"},
#line 286 "frametype.gperf"
{"GRID", FRAME(GRID), PRESERVE, "Group identification registration"},
#line 294 "frametype.gperf"
{"PRIV", FRAME(PRIV), PRESERVE, "Private frame"},
#line 315 "frametype.gperf"
{"TFLT", FRAME(text), PRESERVE, "File type"},
#line 289 "frametype.gperf"
{"MLLT", FRAME(MLLT), DISCARD, "MPEG location lookup table"},
#line 314 "frametype.gperf"
{"TEXT", FRAME(text), PRESERVE, "Lyricist/text writer"},
#line 348 "frametype.gperf"
{"UFID", FRAME(UFID), PRESERVE, "Unique file identifier"},
#line 278 "frametype.gperf"
{"APIC", FRAME(APIC), PRESERVE, "Attached picture"},
#line 279 "frametype.gperf"
{"ASPI", FRAME(ASPI), DISCARD, "Audio seek point index"},
#line 318 "frametype.gperf"
{"TIT2", FRAME(text), PRESERVE, "Title/songname/content description"},
#line 359 "frametype.gperf"
{"WXXX", FRAME(WXXX), PRESERVE, "User defined URL link frame"},
#line 288 "frametype.gperf"
{"MCDI", FRAME(MCDI), PRESERVE, "Music CD identifier"},
#line 316 "frametype.gperf"
{"TIPL", FRAME(text), PRESERVE, "Involved people list"},
#line 347 "frametype.gperf"
{"TXXX", FRAME(TXXX), PRESERVE, "User defined text information frame"},
#line 295 "frametype.gperf"
{"RBUF", FRAME(RBUF), PRESERVE, "Recommended buffer size"},
#line 317 "frametype.gperf"
{"TIT1", FRAME(text), PRESERVE, "Content group description"},
#line 319 "frametype.gperf"
{"TIT3", FRAME(text), PRESERVE, "Subtitle/description refinement"}
};
static const short lookup[] =
{
-1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1,
2, 3, -1, 4, -1, -1, -1, -1, 5, 6, 7, 8, -1, 9,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65,
66, 67, 68, 69, -1, 70, 71, -1, 72, 73, 74, -1, 75, -1,
76, -1, -1, -1, 77, 78, -1, -1, 79, -1, -1, -1, -1, 80,
81, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 82, -1, -1,
-1, 83
};
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
{
register int key = hash (str, len);
if (key <= MAX_HASH_VALUE && key >= 0)
{
register int index = lookup[key];
if (index >= 0)
{
register const char *s = wordlist[index].id;
if (*str == *s && !strncmp (str + 1, s + 1, len - 1) && s[len] == '\0')
return &wordlist[index];
}
}
}
return 0;
}
libid3tag/frametype.h
+42
View File
@@ -0,0 +1,42 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: frametype.h,v 1.7 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_FRAMETYPE_H
# define LIBID3TAG_FRAMETYPE_H
struct id3_frametype {
char const *id;
unsigned int nfields;
enum id3_field_type const *fields;
int defaultflags;
char const *description;
};
extern struct id3_frametype const id3_frametype_text;
extern struct id3_frametype const id3_frametype_url;
extern struct id3_frametype const id3_frametype_experimental;
extern struct id3_frametype const id3_frametype_unknown;
extern struct id3_frametype const id3_frametype_obsolete;
struct id3_frametype const *id3_frametype_lookup(register char const *,
register unsigned int);
# endif
libid3tag/genre.c
+151
View File
@@ -0,0 +1,151 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: genre.c,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include "id3tag.h"
# include "ucs4.h"
/* genres are stored in ucs4 format */
# include "genre.dat"
# define NGENRES (sizeof(genre_table) / sizeof(genre_table[0]))
/*
* NAME: genre->index()
* DESCRIPTION: return an ID3v1 genre string indexed by number
*/
id3_ucs4_t const *id3_genre_index(unsigned int index)
{
return (index < NGENRES) ? genre_table[index] : 0;
}
/*
* NAME: genre->name()
* DESCRIPTION: translate an ID3v2 genre number/keyword to its full name
*/
id3_ucs4_t const *id3_genre_name(id3_ucs4_t const *string)
{
id3_ucs4_t const *ptr;
static id3_ucs4_t const genre_remix[] = { 'R', 'e', 'm', 'i', 'x', 0 };
static id3_ucs4_t const genre_cover[] = { 'C', 'o', 'v', 'e', 'r', 0 };
unsigned long number;
if (string == 0 || *string == 0)
return id3_ucs4_empty;
if (string[0] == 'R' && string[1] == 'X' && string[2] == 0)
return genre_remix;
if (string[0] == 'C' && string[1] == 'R' && string[2] == 0)
return genre_cover;
for (ptr = string; *ptr; ++ptr) {
if (*ptr < '0' || *ptr > '9')
return string;
}
number = id3_ucs4_getnumber(string);
return (number < NGENRES) ? genre_table[number] : string;
}
/*
* NAME: translate()
* DESCRIPTION: return a canonicalized character for testing genre equivalence
*/
static
id3_ucs4_t translate(id3_ucs4_t ch)
{
if (ch) {
if (ch >= 'A' && ch <= 'Z')
ch += 'a' - 'A';
if (ch < 'a' || ch > 'z')
ch = ID3_UCS4_REPLACEMENTCHAR;
}
return ch;
}
/*
* NAME: compare()
* DESCRIPTION: test two ucs4 genre strings for equivalence
*/
static
int compare(id3_ucs4_t const *str1, id3_ucs4_t const *str2)
{
id3_ucs4_t c1, c2;
if (str1 == str2)
return 1;
do {
do
c1 = translate(*str1++);
while (c1 == ID3_UCS4_REPLACEMENTCHAR);
do
c2 = translate(*str2++);
while (c2 == ID3_UCS4_REPLACEMENTCHAR);
}
while (c1 && c1 == c2);
return c1 == c2;
}
/*
* NAME: genre->number()
* DESCRIPTION: translate an ID3v2 genre name/number to its ID3v1 index number
*/
int id3_genre_number(id3_ucs4_t const *string)
{
id3_ucs4_t const *ptr;
int i;
if (string == 0 || *string == 0)
return -1;
for (ptr = string; *ptr; ++ptr) {
if (*ptr < '0' || *ptr > '9')
break;
}
if (*ptr == 0) {
unsigned long number;
number = id3_ucs4_getnumber(string);
return (number <= 0xff) ? number : -1;
}
for (i = 0; i < NGENRES; ++i) {
if (compare(string, genre_table[i]))
return i;
}
/* no equivalent */
return -1;
}
libid3tag/genre.h
+27
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: genre.h,v 1.6 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_GENRE_H
# define LIBID3TAG_GENRE_H
# define ID3_GENRE_OTHER 12
# endif
libid3tag/global.h
+53
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: global.h,v 1.9 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_GLOBAL_H
# define LIBID3TAG_GLOBAL_H
/* conditional debugging */
# if defined(DEBUG) && defined(NDEBUG)
# error "cannot define both DEBUG and NDEBUG"
# endif
# if defined(DEBUG)
# include <stdio.h>
# include "debug.h"
# define malloc(sz) id3_debug_malloc(sz, __FILE__, __LINE__)
# define calloc(n, sz) id3_debug_calloc(n, sz, __FILE__, __LINE__)
# define realloc(ptr, sz) id3_debug_realloc(ptr, sz, __FILE__, __LINE__)
# define free(ptr) id3_debug_free(ptr, __FILE__, __LINE__)
# define release(ptr) id3_debug_release(ptr, __FILE__, __LINE__)
# else
# define release(ptr) (ptr)
# endif
/* conditional features */
# if !defined(HAVE_ASSERT_H)
# if defined(NDEBUG)
# define assert(x) /* nothing */
# else
# define assert(x) do { if (!(x)) abort(); } while (0)
# endif
# endif
# endif
libid3tag/id3tag.h
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* If you would like to negotiate alternate licensing terms, you may do
* so by contacting: Underbit Technologies, Inc. <info@underbit.com>
*
* $Id: id3tag.h,v 1.17 2004/01/23 23:22:46 rob Exp $
*/
# ifndef LIBID3TAG_ID3TAG_H
# define LIBID3TAG_ID3TAG_H
# ifdef __cplusplus
extern "C" {
# endif
# define ID3_TAG_VERSION 0x0400
# define ID3_TAG_VERSION_MAJOR(x) (((x) >> 8) & 0xff)
# define ID3_TAG_VERSION_MINOR(x) (((x) >> 0) & 0xff)
typedef unsigned char id3_byte_t;
typedef unsigned long id3_length_t;
typedef unsigned long id3_ucs4_t;
typedef unsigned char id3_latin1_t;
typedef unsigned short id3_utf16_t;
typedef signed char id3_utf8_t;
struct id3_tag {
unsigned int refcount;
unsigned int version;
int flags;
int extendedflags;
int restrictions;
int options;
unsigned int nframes;
struct id3_frame **frames;
id3_length_t paddedsize;
};
# define ID3_TAG_QUERYSIZE 10
/* ID3v1 field frames */
# define ID3_FRAME_TITLE "TIT2"
# define ID3_FRAME_ARTIST "TPE1"
# define ID3_FRAME_ALBUM "TALB"
# define ID3_FRAME_TRACK "TRCK"
# define ID3_FRAME_YEAR "TDRC"
# define ID3_FRAME_GENRE "TCON"
# define ID3_FRAME_COMMENT "COMM"
/* special frames */
# define ID3_FRAME_OBSOLETE "ZOBS" /* with apologies to the French */
/* tag flags */
enum {
ID3_TAG_FLAG_UNSYNCHRONISATION = 0x80,
ID3_TAG_FLAG_EXTENDEDHEADER = 0x40,
ID3_TAG_FLAG_EXPERIMENTALINDICATOR = 0x20,
ID3_TAG_FLAG_FOOTERPRESENT = 0x10,
ID3_TAG_FLAG_KNOWNFLAGS = 0xf0
};
/* tag extended flags */
enum {
ID3_TAG_EXTENDEDFLAG_TAGISANUPDATE = 0x40,
ID3_TAG_EXTENDEDFLAG_CRCDATAPRESENT = 0x20,
ID3_TAG_EXTENDEDFLAG_TAGRESTRICTIONS = 0x10,
ID3_TAG_EXTENDEDFLAG_KNOWNFLAGS = 0x70
};
/* tag restrictions */
enum {
ID3_TAG_RESTRICTION_TAGSIZE_MASK = 0xc0,
ID3_TAG_RESTRICTION_TAGSIZE_128_FRAMES_1_MB = 0x00,
ID3_TAG_RESTRICTION_TAGSIZE_64_FRAMES_128_KB = 0x40,
ID3_TAG_RESTRICTION_TAGSIZE_32_FRAMES_40_KB = 0x80,
ID3_TAG_RESTRICTION_TAGSIZE_32_FRAMES_4_KB = 0xc0
};
enum {
ID3_TAG_RESTRICTION_TEXTENCODING_MASK = 0x20,
ID3_TAG_RESTRICTION_TEXTENCODING_NONE = 0x00,
ID3_TAG_RESTRICTION_TEXTENCODING_LATIN1_UTF8 = 0x20
};
enum {
ID3_TAG_RESTRICTION_TEXTSIZE_MASK = 0x18,
ID3_TAG_RESTRICTION_TEXTSIZE_NONE = 0x00,
ID3_TAG_RESTRICTION_TEXTSIZE_1024_CHARS = 0x08,
ID3_TAG_RESTRICTION_TEXTSIZE_128_CHARS = 0x10,
ID3_TAG_RESTRICTION_TEXTSIZE_30_CHARS = 0x18
};
enum {
ID3_TAG_RESTRICTION_IMAGEENCODING_MASK = 0x04,
ID3_TAG_RESTRICTION_IMAGEENCODING_NONE = 0x00,
ID3_TAG_RESTRICTION_IMAGEENCODING_PNG_JPEG = 0x04
};
enum {
ID3_TAG_RESTRICTION_IMAGESIZE_MASK = 0x03,
ID3_TAG_RESTRICTION_IMAGESIZE_NONE = 0x00,
ID3_TAG_RESTRICTION_IMAGESIZE_256_256 = 0x01,
ID3_TAG_RESTRICTION_IMAGESIZE_64_64 = 0x02,
ID3_TAG_RESTRICTION_IMAGESIZE_64_64_EXACT = 0x03
};
/* library options */
enum {
ID3_TAG_OPTION_UNSYNCHRONISATION = 0x0001, /* use unsynchronisation */
ID3_TAG_OPTION_COMPRESSION = 0x0002, /* use compression */
ID3_TAG_OPTION_CRC = 0x0004, /* use CRC */
ID3_TAG_OPTION_APPENDEDTAG = 0x0010, /* tag will be appended */
ID3_TAG_OPTION_FILEALTERED = 0x0020, /* audio data was altered */
ID3_TAG_OPTION_ID3V1 = 0x0100 /* render ID3v1/ID3v1.1 tag */
};
struct id3_frame {
char id[5];
char const *description;
unsigned int refcount;
int flags;
int group_id;
int encryption_method;
id3_byte_t *encoded;
id3_length_t encoded_length;
id3_length_t decoded_length;
unsigned int nfields;
union id3_field *fields;
};
enum {
/* frame status flags */
ID3_FRAME_FLAG_TAGALTERPRESERVATION = 0x4000,
ID3_FRAME_FLAG_FILEALTERPRESERVATION = 0x2000,
ID3_FRAME_FLAG_READONLY = 0x1000,
ID3_FRAME_FLAG_STATUSFLAGS = 0xff00,
/* frame format flags */
ID3_FRAME_FLAG_GROUPINGIDENTITY = 0x0040,
ID3_FRAME_FLAG_COMPRESSION = 0x0008,
ID3_FRAME_FLAG_ENCRYPTION = 0x0004,
ID3_FRAME_FLAG_UNSYNCHRONISATION = 0x0002,
ID3_FRAME_FLAG_DATALENGTHINDICATOR = 0x0001,
ID3_FRAME_FLAG_FORMATFLAGS = 0x00ff,
ID3_FRAME_FLAG_KNOWNFLAGS = 0x704f
};
enum id3_field_type {
ID3_FIELD_TYPE_TEXTENCODING,
ID3_FIELD_TYPE_LATIN1,
ID3_FIELD_TYPE_LATIN1FULL,
ID3_FIELD_TYPE_LATIN1LIST,
ID3_FIELD_TYPE_STRING,
ID3_FIELD_TYPE_STRINGFULL,
ID3_FIELD_TYPE_STRINGLIST,
ID3_FIELD_TYPE_LANGUAGE,
ID3_FIELD_TYPE_FRAMEID,
ID3_FIELD_TYPE_DATE,
ID3_FIELD_TYPE_INT8,
ID3_FIELD_TYPE_INT16,
ID3_FIELD_TYPE_INT24,
ID3_FIELD_TYPE_INT32,
ID3_FIELD_TYPE_INT32PLUS,
ID3_FIELD_TYPE_BINARYDATA
};
enum id3_field_textencoding {
ID3_FIELD_TEXTENCODING_ISO_8859_1 = 0x00,
ID3_FIELD_TEXTENCODING_UTF_16 = 0x01,
ID3_FIELD_TEXTENCODING_UTF_16BE = 0x02,
ID3_FIELD_TEXTENCODING_UTF_8 = 0x03
};
union id3_field {
enum id3_field_type type;
struct {
enum id3_field_type type;
signed long value;
} number;
struct {
enum id3_field_type type;
id3_latin1_t *ptr;
} latin1;
struct {
enum id3_field_type type;
unsigned int nstrings;
id3_latin1_t **strings;
} latin1list;
struct {
enum id3_field_type type;
id3_ucs4_t *ptr;
} string;
struct {
enum id3_field_type type;
unsigned int nstrings;
id3_ucs4_t **strings;
} stringlist;
struct {
enum id3_field_type type;
char value[9];
} immediate;
struct {
enum id3_field_type type;
id3_byte_t *data;
id3_length_t length;
} binary;
};
/* file interface */
enum id3_file_mode {
ID3_FILE_MODE_READONLY = 0,
ID3_FILE_MODE_READWRITE
};
struct id3_file *id3_file_open(char const *, enum id3_file_mode);
struct id3_file *id3_file_fdopen(int, enum id3_file_mode);
int id3_file_close(struct id3_file *);
struct id3_tag *id3_file_tag(struct id3_file const *);
int id3_file_update(struct id3_file *);
/* tag interface */
struct id3_tag *id3_tag_new(void);
void id3_tag_delete(struct id3_tag *);
unsigned int id3_tag_version(struct id3_tag const *);
int id3_tag_options(struct id3_tag *, int, int);
void id3_tag_setlength(struct id3_tag *, id3_length_t);
void id3_tag_clearframes(struct id3_tag *);
int id3_tag_attachframe(struct id3_tag *, struct id3_frame *);
int id3_tag_detachframe(struct id3_tag *, struct id3_frame *);
struct id3_frame *id3_tag_findframe(struct id3_tag const *,
char const *, unsigned int);
signed long id3_tag_query(id3_byte_t const *, id3_length_t);
struct id3_tag *id3_tag_parse(id3_byte_t const *, id3_length_t);
id3_length_t id3_tag_render(struct id3_tag const *, id3_byte_t *);
/* frame interface */
struct id3_frame *id3_frame_new(char const *);
void id3_frame_delete(struct id3_frame *);
union id3_field *id3_frame_field(struct id3_frame const *, unsigned int);
/* field interface */
enum id3_field_type id3_field_type(union id3_field const *);
int id3_field_setint(union id3_field *, signed long);
int id3_field_settextencoding(union id3_field *, enum id3_field_textencoding);
int id3_field_setstrings(union id3_field *, unsigned int, id3_ucs4_t **);
int id3_field_addstring(union id3_field *, id3_ucs4_t const *);
int id3_field_setlanguage(union id3_field *, char const *);
int id3_field_setlatin1(union id3_field *, id3_latin1_t const *);
int id3_field_setfulllatin1(union id3_field *, id3_latin1_t const *);
int id3_field_setstring(union id3_field *, id3_ucs4_t const *);
int id3_field_setfullstring(union id3_field *, id3_ucs4_t const *);
int id3_field_setframeid(union id3_field *, char const *);
int id3_field_setbinarydata(union id3_field *,
id3_byte_t const *, id3_length_t);
signed long id3_field_getint(union id3_field const *);
enum id3_field_textencoding id3_field_gettextencoding(union id3_field const *);
id3_latin1_t const *id3_field_getlatin1(union id3_field const *);
id3_latin1_t const *id3_field_getfulllatin1(union id3_field const *);
id3_ucs4_t const *id3_field_getstring(union id3_field const *);
id3_ucs4_t const *id3_field_getfullstring(union id3_field const *);
unsigned int id3_field_getnstrings(union id3_field const *);
id3_ucs4_t const *id3_field_getstrings(union id3_field const *,
unsigned int);
char const *id3_field_getframeid(union id3_field const *);
id3_byte_t const *id3_field_getbinarydata(union id3_field const *,
id3_length_t *);
/* genre interface */
id3_ucs4_t const *id3_genre_index(unsigned int);
id3_ucs4_t const *id3_genre_name(id3_ucs4_t const *);
int id3_genre_number(id3_ucs4_t const *);
/* ucs4 interface */
id3_latin1_t *id3_ucs4_latin1duplicate(id3_ucs4_t const *);
id3_utf16_t *id3_ucs4_utf16duplicate(id3_ucs4_t const *);
id3_utf8_t *id3_ucs4_utf8duplicate(id3_ucs4_t const *);
void id3_ucs4_putnumber(id3_ucs4_t *, unsigned long);
unsigned long id3_ucs4_getnumber(id3_ucs4_t const *);
/* latin1/utf16/utf8 interfaces */
id3_ucs4_t *id3_latin1_ucs4duplicate(id3_latin1_t const *);
id3_ucs4_t *id3_utf16_ucs4duplicate(id3_utf16_t const *);
id3_ucs4_t *id3_utf8_ucs4duplicate(id3_utf8_t const *);
/* version interface */
# define ID3_VERSION_MAJOR 0
# define ID3_VERSION_MINOR 15
# define ID3_VERSION_PATCH 1
# define ID3_VERSION_EXTRA " (beta)"
# define ID3_VERSION_STRINGIZE(str) #str
# define ID3_VERSION_STRING(num) ID3_VERSION_STRINGIZE(num)
# define ID3_VERSION ID3_VERSION_STRING(ID3_VERSION_MAJOR) "." \
ID3_VERSION_STRING(ID3_VERSION_MINOR) "." \
ID3_VERSION_STRING(ID3_VERSION_PATCH) \
ID3_VERSION_EXTRA
# define ID3_PUBLISHYEAR "2000-2004"
# define ID3_AUTHOR "Underbit Technologies, Inc."
# define ID3_EMAIL "info@underbit.com"
extern char const id3_version[];
extern char const id3_copyright[];
extern char const id3_author[];
extern char const id3_build[];
# ifdef __cplusplus
}
# endif
# endif
libid3tag/latin1.c
+217
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: latin1.c,v 1.10 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include "id3tag.h"
# include "latin1.h"
# include "ucs4.h"
/*
* NAME: latin1->length()
* DESCRIPTION: return the number of ucs4 chars represented by a latin1 string
*/
id3_length_t id3_latin1_length(id3_latin1_t const *latin1)
{
id3_latin1_t const *ptr = latin1;
while (*ptr)
++ptr;
return ptr - latin1;
}
/*
* NAME: latin1->size()
* DESCRIPTION: return the encoding size of a latin1 string
*/
id3_length_t id3_latin1_size(id3_latin1_t const *latin1)
{
return id3_latin1_length(latin1) + 1;
}
/*
* NAME: latin1->copy()
* DESCRIPTION: copy a latin1 string
*/
void id3_latin1_copy(id3_latin1_t *dest, id3_latin1_t const *src)
{
while ((*dest++ = *src++))
;
}
/*
* NAME: latin1->duplicate()
* DESCRIPTION: duplicate a latin1 string
*/
id3_latin1_t *id3_latin1_duplicate(id3_latin1_t const *src)
{
id3_latin1_t *latin1;
latin1 = malloc(id3_latin1_size(src) * sizeof(*latin1));
if (latin1)
id3_latin1_copy(latin1, src);
return latin1;
}
/*
* NAME: latin1->ucs4duplicate()
* DESCRIPTION: duplicate and decode a latin1 string into ucs4
*/
id3_ucs4_t *id3_latin1_ucs4duplicate(id3_latin1_t const *latin1)
{
id3_ucs4_t *ucs4;
ucs4 = malloc((id3_latin1_length(latin1) + 1) * sizeof(*ucs4));
if (ucs4)
id3_latin1_decode(latin1, ucs4);
return release(ucs4);
}
/*
* NAME: latin1->decodechar()
* DESCRIPTION: decode a (single) latin1 char into a single ucs4 char
*/
id3_length_t id3_latin1_decodechar(id3_latin1_t const *latin1,
id3_ucs4_t *ucs4)
{
*ucs4 = *latin1;
return 1;
}
/*
* NAME: latin1->encodechar()
* DESCRIPTION: encode a single ucs4 char into a (single) latin1 char
*/
id3_length_t id3_latin1_encodechar(id3_latin1_t *latin1, id3_ucs4_t ucs4)
{
*latin1 = ucs4;
if (ucs4 > 0x000000ffL)
*latin1 = ID3_UCS4_REPLACEMENTCHAR;
return 1;
}
/*
* NAME: latin1->decode()
* DESCRIPTION: decode a complete latin1 string into a ucs4 string
*/
void id3_latin1_decode(id3_latin1_t const *latin1, id3_ucs4_t *ucs4)
{
do
latin1 += id3_latin1_decodechar(latin1, ucs4);
while (*ucs4++);
}
/*
* NAME: latin1->encode()
* DESCRIPTION: encode a complete ucs4 string into a latin1 string
*/
void id3_latin1_encode(id3_latin1_t *latin1, id3_ucs4_t const *ucs4)
{
do
latin1 += id3_latin1_encodechar(latin1, *ucs4);
while (*ucs4++);
}
/*
* NAME: latin1->put()
* DESCRIPTION: serialize a single latin1 character
*/
id3_length_t id3_latin1_put(id3_byte_t **ptr, id3_latin1_t latin1)
{
if (ptr)
*(*ptr)++ = latin1;
return 1;
}
/*
* NAME: latin1->get()
* DESCRIPTION: deserialize a single latin1 character
*/
id3_latin1_t id3_latin1_get(id3_byte_t const **ptr)
{
return *(*ptr)++;
}
/*
* NAME: latin1->serialize()
* DESCRIPTION: serialize a ucs4 string using latin1 encoding
*/
id3_length_t id3_latin1_serialize(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
int terminate)
{
id3_length_t size = 0;
id3_latin1_t latin1[1], *out;
while (*ucs4) {
switch (id3_latin1_encodechar(out = latin1, *ucs4++)) {
case 1: size += id3_latin1_put(ptr, *out++);
case 0: break;
}
}
if (terminate)
size += id3_latin1_put(ptr, 0);
return size;
}
/*
* NAME: latin1->deserialize()
* DESCRIPTION: deserialize a ucs4 string using latin1 encoding
*/
id3_ucs4_t *id3_latin1_deserialize(id3_byte_t const **ptr, id3_length_t length)
{
id3_byte_t const *end;
id3_latin1_t *latin1ptr, *latin1;
id3_ucs4_t *ucs4;
end = *ptr + length;
latin1 = malloc((length + 1) * sizeof(*latin1));
if (latin1 == 0)
return 0;
latin1ptr = latin1;
while (end - *ptr > 0 && (*latin1ptr = id3_latin1_get(ptr)))
++latin1ptr;
*latin1ptr = 0;
ucs4 = malloc((id3_latin1_length(latin1) + 1) * sizeof(*ucs4));
if (ucs4)
id3_latin1_decode(latin1, ucs4);
free(latin1);
return ucs4;
}
libid3tag/latin1.h
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: latin1.h,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_LATIN1_H
# define LIBID3TAG_LATIN1_H
# include "id3tag.h"
id3_length_t id3_latin1_length(id3_latin1_t const *);
id3_length_t id3_latin1_size(id3_latin1_t const *);
void id3_latin1_copy(id3_latin1_t *, id3_latin1_t const *);
id3_latin1_t *id3_latin1_duplicate(id3_latin1_t const *);
id3_length_t id3_latin1_decodechar(id3_latin1_t const *, id3_ucs4_t *);
id3_length_t id3_latin1_encodechar(id3_latin1_t *, id3_ucs4_t);
void id3_latin1_decode(id3_latin1_t const *, id3_ucs4_t *);
void id3_latin1_encode(id3_latin1_t *, id3_ucs4_t const *);
id3_length_t id3_latin1_put(id3_byte_t **, id3_latin1_t);
id3_latin1_t id3_latin1_get(id3_byte_t const **);
id3_length_t id3_latin1_serialize(id3_byte_t **, id3_ucs4_t const *, int);
id3_ucs4_t *id3_latin1_deserialize(id3_byte_t const **, id3_length_t);
# endif
libid3tag/parse.c
+196
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: parse.c,v 1.9 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include <stdlib.h>
# include <string.h>
# include "id3tag.h"
# include "parse.h"
# include "latin1.h"
# include "utf16.h"
# include "utf8.h"
signed long id3_parse_int(id3_byte_t const **ptr, unsigned int bytes)
{
signed long value = 0;
assert(bytes >= 1 && bytes <= 4);
if (**ptr & 0x80)
value = ~0;
switch (bytes) {
case 4: value = (value << 8) | *(*ptr)++;
case 3: value = (value << 8) | *(*ptr)++;
case 2: value = (value << 8) | *(*ptr)++;
case 1: value = (value << 8) | *(*ptr)++;
}
return value;
}
unsigned long id3_parse_uint(id3_byte_t const **ptr, unsigned int bytes)
{
unsigned long value = 0;
assert(bytes >= 1 && bytes <= 4);
switch (bytes) {
case 4: value = (value << 8) | *(*ptr)++;
case 3: value = (value << 8) | *(*ptr)++;
case 2: value = (value << 8) | *(*ptr)++;
case 1: value = (value << 8) | *(*ptr)++;
}
return value;
}
unsigned long id3_parse_syncsafe(id3_byte_t const **ptr, unsigned int bytes)
{
unsigned long value = 0;
assert(bytes == 4 || bytes == 5);
switch (bytes) {
case 5: value = (value << 4) | (*(*ptr)++ & 0x0f);
case 4: value = (value << 7) | (*(*ptr)++ & 0x7f);
value = (value << 7) | (*(*ptr)++ & 0x7f);
value = (value << 7) | (*(*ptr)++ & 0x7f);
value = (value << 7) | (*(*ptr)++ & 0x7f);
}
return value;
}
void id3_parse_immediate(id3_byte_t const **ptr, unsigned int bytes,
char *value)
{
assert(value);
assert(bytes == 8 || bytes == 4 || bytes == 3);
switch (bytes) {
case 8: *value++ = *(*ptr)++;
*value++ = *(*ptr)++;
*value++ = *(*ptr)++;
*value++ = *(*ptr)++;
case 4: *value++ = *(*ptr)++;
case 3: *value++ = *(*ptr)++;
*value++ = *(*ptr)++;
*value++ = *(*ptr)++;
}
*value = 0;
}
id3_latin1_t *id3_parse_latin1(id3_byte_t const **ptr, id3_length_t length,
int full)
{
id3_byte_t const *end;
int terminated = 0;
id3_latin1_t *latin1;
end = memchr(*ptr, 0, length);
if (end == 0)
end = *ptr + length;
else {
length = end - *ptr;
terminated = 1;
}
latin1 = malloc(length + 1);
if (latin1) {
memcpy(latin1, *ptr, length);
latin1[length] = 0;
if (!full) {
id3_latin1_t *check;
for (check = latin1; *check; ++check) {
if (*check == '\n')
*check = ' ';
}
}
}
*ptr += length + terminated;
return latin1;
}
id3_ucs4_t *id3_parse_string(id3_byte_t const **ptr, id3_length_t length,
enum id3_field_textencoding encoding, int full)
{
id3_ucs4_t *ucs4 = 0;
enum id3_utf16_byteorder byteorder = ID3_UTF16_BYTEORDER_ANY;
switch (encoding) {
case ID3_FIELD_TEXTENCODING_ISO_8859_1:
ucs4 = id3_latin1_deserialize(ptr, length);
break;
case ID3_FIELD_TEXTENCODING_UTF_16BE:
byteorder = ID3_UTF16_BYTEORDER_BE;
case ID3_FIELD_TEXTENCODING_UTF_16:
ucs4 = id3_utf16_deserialize(ptr, length, byteorder);
break;
case ID3_FIELD_TEXTENCODING_UTF_8:
ucs4 = id3_utf8_deserialize(ptr, length);
break;
}
if (ucs4 && !full) {
id3_ucs4_t *check;
for (check = ucs4; *check; ++check) {
if (*check == '\n')
*check = ' ';
}
}
return ucs4;
}
id3_byte_t *id3_parse_binary(id3_byte_t const **ptr, id3_length_t length)
{
id3_byte_t *data;
if (length == 0)
return malloc(1);
data = malloc(length);
if (data)
memcpy(data, *ptr, length);
*ptr += length;
return data;
}
libid3tag/parse.h
+34
View File
@@ -0,0 +1,34 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: parse.h,v 1.6 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_PARSE_H
# define LIBID3TAG_PARSE_H
signed long id3_parse_int(id3_byte_t const **, unsigned int);
unsigned long id3_parse_uint(id3_byte_t const **, unsigned int);
unsigned long id3_parse_syncsafe(id3_byte_t const **, unsigned int);
void id3_parse_immediate(id3_byte_t const **, unsigned int, char *);
id3_latin1_t *id3_parse_latin1(id3_byte_t const **, id3_length_t, int);
id3_ucs4_t *id3_parse_string(id3_byte_t const **, id3_length_t,
enum id3_field_textencoding, int);
id3_byte_t *id3_parse_binary(id3_byte_t const **, id3_length_t);
# endif
libid3tag/render.c
+200
View File
@@ -0,0 +1,200 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: render.c,v 1.11 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <string.h>
# include <stdlib.h>
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include "id3tag.h"
# include "render.h"
# include "ucs4.h"
# include "latin1.h"
# include "utf16.h"
# include "utf8.h"
id3_length_t id3_render_immediate(id3_byte_t **ptr,
char const *value, unsigned int bytes)
{
assert(value);
assert(bytes == 8 || bytes == 4 || bytes == 3);
if (ptr) {
switch (bytes) {
case 8: *(*ptr)++ = *value++;
*(*ptr)++ = *value++;
*(*ptr)++ = *value++;
*(*ptr)++ = *value++;
case 4: *(*ptr)++ = *value++;
case 3: *(*ptr)++ = *value++;
*(*ptr)++ = *value++;
*(*ptr)++ = *value++;
}
}
return bytes;
}
id3_length_t id3_render_syncsafe(id3_byte_t **ptr,
unsigned long num, unsigned int bytes)
{
assert(bytes == 4 || bytes == 5);
if (ptr) {
switch (bytes) {
case 5: *(*ptr)++ = (num >> 28) & 0x0f;
case 4: *(*ptr)++ = (num >> 21) & 0x7f;
*(*ptr)++ = (num >> 14) & 0x7f;
*(*ptr)++ = (num >> 7) & 0x7f;
*(*ptr)++ = (num >> 0) & 0x7f;
}
}
return bytes;
}
id3_length_t id3_render_int(id3_byte_t **ptr,
signed long num, unsigned int bytes)
{
assert(bytes >= 1 && bytes <= 4);
if (ptr) {
switch (bytes) {
case 4: *(*ptr)++ = num >> 24;
case 3: *(*ptr)++ = num >> 16;
case 2: *(*ptr)++ = num >> 8;
case 1: *(*ptr)++ = num >> 0;
}
}
return bytes;
}
id3_length_t id3_render_binary(id3_byte_t **ptr,
id3_byte_t const *data, id3_length_t length)
{
if (data == 0)
return 0;
if (ptr) {
memcpy(*ptr, data, length);
*ptr += length;
}
return length;
}
id3_length_t id3_render_latin1(id3_byte_t **ptr,
id3_latin1_t const *latin1, int terminate)
{
id3_length_t size;
if (latin1 == 0)
latin1 = "";
size = id3_latin1_size(latin1);
if (!terminate)
--size;
if (ptr) {
memcpy(*ptr, latin1, size);
*ptr += size;
}
return size;
}
id3_length_t id3_render_string(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
enum id3_field_textencoding encoding,
int terminate)
{
enum id3_utf16_byteorder byteorder = ID3_UTF16_BYTEORDER_ANY;
if (ucs4 == 0)
ucs4 = id3_ucs4_empty;
switch (encoding) {
case ID3_FIELD_TEXTENCODING_ISO_8859_1:
return id3_latin1_serialize(ptr, ucs4, terminate);
case ID3_FIELD_TEXTENCODING_UTF_16BE:
byteorder = ID3_UTF16_BYTEORDER_BE;
case ID3_FIELD_TEXTENCODING_UTF_16:
return id3_utf16_serialize(ptr, ucs4, byteorder, terminate);
case ID3_FIELD_TEXTENCODING_UTF_8:
return id3_utf8_serialize(ptr, ucs4, terminate);
}
return 0;
}
id3_length_t id3_render_padding(id3_byte_t **ptr, id3_byte_t value,
id3_length_t length)
{
if (ptr) {
memset(*ptr, value, length);
*ptr += length;
}
return length;
}
/*
* NAME: render->paddedstring()
* DESCRIPTION: render a space-padded string using latin1 encoding
*/
id3_length_t id3_render_paddedstring(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
id3_length_t length)
{
id3_ucs4_t padded[31], *data, *end;
/* latin1 encoding only (this is used for ID3v1 fields) */
assert(length <= 30);
data = padded;
end = data + length;
if (ucs4) {
while (*ucs4 && end - data > 0) {
*data++ = *ucs4++;
if (data[-1] == '\n')
data[-1] = ' ';
}
}
while (end - data > 0)
*data++ = ' ';
*data = 0;
return id3_latin1_serialize(ptr, padded, 0);
}
libid3tag/render.h
+40
View File
@@ -0,0 +1,40 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: render.h,v 1.7 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_RENDER_H
# define LIBID3TAG_RENDER_H
# include "id3tag.h"
id3_length_t id3_render_immediate(id3_byte_t **, char const *, unsigned int);
id3_length_t id3_render_syncsafe(id3_byte_t **, unsigned long, unsigned int);
id3_length_t id3_render_int(id3_byte_t **, signed long, unsigned int);
id3_length_t id3_render_binary(id3_byte_t **,
id3_byte_t const *, id3_length_t);
id3_length_t id3_render_latin1(id3_byte_t **, id3_latin1_t const *, int);
id3_length_t id3_render_string(id3_byte_t **, id3_ucs4_t const *,
enum id3_field_textencoding, int);
id3_length_t id3_render_padding(id3_byte_t **, id3_byte_t, id3_length_t);
id3_length_t id3_render_paddedstring(id3_byte_t **, id3_ucs4_t const *,
id3_length_t);
# endif
libid3tag/tag.c
+909
View File
@@ -0,0 +1,909 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: tag.c,v 1.20 2004/02/17 02:04:10 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <string.h>
# include <stdlib.h>
# ifdef HAVE_ASSERT_H
# include <assert.h>
# endif
# include "id3tag.h"
# include "tag.h"
# include "frame.h"
# include "compat.h"
# include "parse.h"
# include "render.h"
# include "latin1.h"
# include "ucs4.h"
# include "genre.h"
# include "crc.h"
# include "field.h"
# include "util.h"
/*
* NAME: tag->new()
* DESCRIPTION: allocate and return a new, empty tag
*/
struct id3_tag *id3_tag_new(void)
{
struct id3_tag *tag;
tag = malloc(sizeof(*tag));
if (tag) {
tag->refcount = 0;
tag->version = ID3_TAG_VERSION;
tag->flags = 0;
tag->extendedflags = 0;
tag->restrictions = 0;
tag->options = /* ID3_TAG_OPTION_UNSYNCHRONISATION | */
ID3_TAG_OPTION_COMPRESSION | ID3_TAG_OPTION_CRC;
tag->nframes = 0;
tag->frames = 0;
tag->paddedsize = 0;
}
return tag;
}
/*
* NAME: tag->delete()
* DESCRIPTION: destroy a tag and deallocate all associated memory
*/
void id3_tag_delete(struct id3_tag *tag)
{
assert(tag);
if (tag->refcount == 0) {
id3_tag_clearframes(tag);
if (tag->frames)
free(tag->frames);
free(tag);
}
}
/*
* NAME: tag->addref()
* DESCRIPTION: add an external reference to a tag
*/
void id3_tag_addref(struct id3_tag *tag)
{
assert(tag);
++tag->refcount;
}
/*
* NAME: tag->delref()
* DESCRIPTION: remove an external reference to a tag
*/
void id3_tag_delref(struct id3_tag *tag)
{
assert(tag && tag->refcount > 0);
--tag->refcount;
}
/*
* NAME: tag->version()
* DESCRIPTION: return the tag's original ID3 version number
*/
unsigned int id3_tag_version(struct id3_tag const *tag)
{
assert(tag);
return tag->version;
}
/*
* NAME: tag->options()
* DESCRIPTION: get or set tag options
*/
int id3_tag_options(struct id3_tag *tag, int mask, int values)
{
assert(tag);
if (mask)
tag->options = (tag->options & ~mask) | (values & mask);
return tag->options;
}
/*
* NAME: tag->setlength()
* DESCRIPTION: set the minimum rendered tag size
*/
void id3_tag_setlength(struct id3_tag *tag, id3_length_t length)
{
assert(tag);
tag->paddedsize = length;
}
/*
* NAME: tag->clearframes()
* DESCRIPTION: detach and delete all frames associated with a tag
*/
void id3_tag_clearframes(struct id3_tag *tag)
{
unsigned int i;
assert(tag);
for (i = 0; i < tag->nframes; ++i) {
id3_frame_delref(tag->frames[i]);
id3_frame_delete(tag->frames[i]);
}
tag->nframes = 0;
}
/*
* NAME: tag->attachframe()
* DESCRIPTION: attach a frame to a tag
*/
int id3_tag_attachframe(struct id3_tag *tag, struct id3_frame *frame)
{
struct id3_frame **frames;
assert(tag && frame);
frames = realloc(tag->frames, (tag->nframes + 1) * sizeof(*frames));
if (frames == 0)
return -1;
tag->frames = frames;
tag->frames[tag->nframes++] = frame;
id3_frame_addref(frame);
return 0;
}
/*
* NAME: tag->detachframe()
* DESCRIPTION: detach (but don't delete) a frame from a tag
*/
int id3_tag_detachframe(struct id3_tag *tag, struct id3_frame *frame)
{
unsigned int i;
assert(tag && frame);
for (i = 0; i < tag->nframes; ++i) {
if (tag->frames[i] == frame)
break;
}
if (i == tag->nframes)
return -1;
--tag->nframes;
while (i++ < tag->nframes)
tag->frames[i - 1] = tag->frames[i];
id3_frame_delref(frame);
return 0;
}
/*
* NAME: tag->findframe()
* DESCRIPTION: find in a tag the nth (0-based) frame with the given frame ID
*/
struct id3_frame *id3_tag_findframe(struct id3_tag const *tag,
char const *id, unsigned int index)
{
unsigned int len, i;
assert(tag);
if (id == 0 || *id == 0)
return (index < tag->nframes) ? tag->frames[index] : 0;
len = strlen(id);
if (len == 4) {
struct id3_compat const *compat;
compat = id3_compat_lookup(id, len);
if (compat && compat->equiv && !compat->translate) {
id = compat->equiv;
len = strlen(id);
}
}
for (i = 0; i < tag->nframes; ++i) {
if (strncmp(tag->frames[i]->id, id, len) == 0 && index-- == 0)
return tag->frames[i];
}
return 0;
}
enum tagtype {
TAGTYPE_NONE = 0,
TAGTYPE_ID3V1,
TAGTYPE_ID3V2,
TAGTYPE_ID3V2_FOOTER
};
static
enum tagtype tagtype(id3_byte_t const *data, id3_length_t length)
{
if (length >= 3 &&
data[0] == 'T' && data[1] == 'A' && data[2] == 'G')
return TAGTYPE_ID3V1;
if (length >= 10 &&
((data[0] == 'I' && data[1] == 'D' && data[2] == '3') ||
(data[0] == '3' && data[1] == 'D' && data[2] == 'I')) &&
data[3] < 0xff && data[4] < 0xff &&
data[6] < 0x80 && data[7] < 0x80 && data[8] < 0x80 && data[9] < 0x80)
return data[0] == 'I' ? TAGTYPE_ID3V2 : TAGTYPE_ID3V2_FOOTER;
return TAGTYPE_NONE;
}
static
void parse_header(id3_byte_t const **ptr,
unsigned int *version, int *flags, id3_length_t *size)
{
*ptr += 3;
*version = id3_parse_uint(ptr, 2);
*flags = id3_parse_uint(ptr, 1);
*size = id3_parse_syncsafe(ptr, 4);
}
/*
* NAME: tag->query()
* DESCRIPTION: if a tag begins at the given location, return its size
*/
signed long id3_tag_query(id3_byte_t const *data, id3_length_t length)
{
unsigned int version;
int flags;
id3_length_t size;
assert(data);
switch (tagtype(data, length)) {
case TAGTYPE_ID3V1:
return 128;
case TAGTYPE_ID3V2:
parse_header(&data, &version, &flags, &size);
if (flags & ID3_TAG_FLAG_FOOTERPRESENT)
size += 10;
return 10 + size;
case TAGTYPE_ID3V2_FOOTER:
parse_header(&data, &version, &flags, &size);
return -size - 10;
case TAGTYPE_NONE:
break;
}
return 0;
}
static
void trim(char *str)
{
char *ptr;
ptr = str + strlen(str);
while (ptr > str && ptr[-1] == ' ')
--ptr;
*ptr = 0;
}
static
int v1_attachstr(struct id3_tag *tag, char const *id,
char *text, unsigned long number)
{
struct id3_frame *frame;
id3_ucs4_t ucs4[31];
if (text) {
trim(text);
if (*text == 0)
return 0;
}
frame = id3_frame_new(id);
if (frame == 0)
return -1;
if (id3_field_settextencoding(&frame->fields[0],
ID3_FIELD_TEXTENCODING_ISO_8859_1) == -1)
goto fail;
if (text)
id3_latin1_decode(text, ucs4);
else
id3_ucs4_putnumber(ucs4, number);
if (strcmp(id, ID3_FRAME_COMMENT) == 0) {
if (id3_field_setlanguage(&frame->fields[1], "XXX") == -1 ||
id3_field_setstring(&frame->fields[2], id3_ucs4_empty) == -1 ||
id3_field_setfullstring(&frame->fields[3], ucs4) == -1)
goto fail;
}
else {
id3_ucs4_t *ptr = ucs4;
if (id3_field_setstrings(&frame->fields[1], 1, &ptr) == -1)
goto fail;
}
if (id3_tag_attachframe(tag, frame) == -1)
goto fail;
return 0;
fail:
id3_frame_delete(frame);
return -1;
}
static
struct id3_tag *v1_parse(id3_byte_t const *data)
{
struct id3_tag *tag;
tag = id3_tag_new();
if (tag) {
char title[31], artist[31], album[31], year[5], comment[31];
unsigned int genre, track;
tag->version = 0x0100;
tag->options |= ID3_TAG_OPTION_ID3V1;
tag->options &= ~ID3_TAG_OPTION_COMPRESSION;
tag->restrictions =
ID3_TAG_RESTRICTION_TEXTENCODING_LATIN1_UTF8 |
ID3_TAG_RESTRICTION_TEXTSIZE_30_CHARS;
title[30] = artist[30] = album[30] = year[4] = comment[30] = 0;
memcpy(title, &data[3], 30);
memcpy(artist, &data[33], 30);
memcpy(album, &data[63], 30);
memcpy(year, &data[93], 4);
memcpy(comment, &data[97], 30);
genre = data[127];
track = 0;
if (comment[28] == 0 && comment[29] != 0) {
track = comment[29];
tag->version = 0x0101;
}
/* populate tag frames */
if (v1_attachstr(tag, ID3_FRAME_TITLE, title, 0) == -1 ||
v1_attachstr(tag, ID3_FRAME_ARTIST, artist, 0) == -1 ||
v1_attachstr(tag, ID3_FRAME_ALBUM, album, 0) == -1 ||
v1_attachstr(tag, ID3_FRAME_YEAR, year, 0) == -1 ||
(track && v1_attachstr(tag, ID3_FRAME_TRACK, 0, track) == -1) ||
(genre < 0xff && v1_attachstr(tag, ID3_FRAME_GENRE, 0, genre) == -1) ||
v1_attachstr(tag, ID3_FRAME_COMMENT, comment, 0) == -1) {
id3_tag_delete(tag);
tag = 0;
}
}
return tag;
}
static
struct id3_tag *v2_parse(id3_byte_t const *ptr)
{
struct id3_tag *tag;
id3_byte_t *mem = 0;
tag = id3_tag_new();
if (tag) {
id3_byte_t const *end;
id3_length_t size;
parse_header(&ptr, &tag->version, &tag->flags, &size);
tag->paddedsize = 10 + size;
if ((tag->flags & ID3_TAG_FLAG_UNSYNCHRONISATION) &&
ID3_TAG_VERSION_MAJOR(tag->version) < 4) {
mem = malloc(size);
if (mem == 0)
goto fail;
memcpy(mem, ptr, size);
size = id3_util_deunsynchronise(mem, size);
ptr = mem;
}
end = ptr + size;
if (tag->flags & ID3_TAG_FLAG_EXTENDEDHEADER) {
switch (ID3_TAG_VERSION_MAJOR(tag->version)) {
case 2:
goto fail;
case 3:
{
id3_byte_t const *ehptr, *ehend;
id3_length_t ehsize;
enum {
EH_FLAG_CRC = 0x8000 /* CRC data present */
};
if (end - ptr < 4)
goto fail;
ehsize = id3_parse_uint(&ptr, 4);
if (ehsize > end - ptr)
goto fail;
ehptr = ptr;
ehend = ptr + ehsize;
ptr = ehend;
if (ehend - ehptr >= 6) {
int ehflags;
id3_length_t padsize;
ehflags = id3_parse_uint(&ehptr, 2);
padsize = id3_parse_uint(&ehptr, 4);
if (padsize > end - ptr)
goto fail;
end -= padsize;
if (ehflags & EH_FLAG_CRC) {
unsigned long crc;
if (ehend - ehptr < 4)
goto fail;
crc = id3_parse_uint(&ehptr, 4);
if (crc != id3_crc_compute(ptr, end - ptr))
goto fail;
tag->extendedflags |= ID3_TAG_EXTENDEDFLAG_CRCDATAPRESENT;
}
}
}
break;
case 4:
{
id3_byte_t const *ehptr, *ehend;
id3_length_t ehsize;
unsigned int bytes;
if (end - ptr < 4)
goto fail;
ehptr = ptr;
ehsize = id3_parse_syncsafe(&ptr, 4);
if (ehsize < 6 || ehsize > end - ehptr)
goto fail;
ehend = ehptr + ehsize;
bytes = id3_parse_uint(&ptr, 1);
if (bytes < 1 || bytes > ehend - ptr)
goto fail;
ehptr = ptr + bytes;
/* verify extended header size */
{
id3_byte_t const *flagsptr = ptr, *dataptr = ehptr;
unsigned int datalen;
int ehflags;
while (bytes--) {
for (ehflags = id3_parse_uint(&flagsptr, 1); ehflags;
ehflags = (ehflags << 1) & 0xff) {
if (ehflags & 0x80) {
if (dataptr == ehend)
goto fail;
datalen = id3_parse_uint(&dataptr, 1);
if (datalen > 0x7f || datalen > ehend - dataptr)
goto fail;
dataptr += datalen;
}
}
}
}
tag->extendedflags = id3_parse_uint(&ptr, 1);
ptr = ehend;
if (tag->extendedflags & ID3_TAG_EXTENDEDFLAG_TAGISANUPDATE) {
bytes = id3_parse_uint(&ehptr, 1);
ehptr += bytes;
}
if (tag->extendedflags & ID3_TAG_EXTENDEDFLAG_CRCDATAPRESENT) {
unsigned long crc;
bytes = id3_parse_uint(&ehptr, 1);
if (bytes < 5)
goto fail;
crc = id3_parse_syncsafe(&ehptr, 5);
ehptr += bytes - 5;
if (crc != id3_crc_compute(ptr, end - ptr))
goto fail;
}
if (tag->extendedflags & ID3_TAG_EXTENDEDFLAG_TAGRESTRICTIONS) {
bytes = id3_parse_uint(&ehptr, 1);
if (bytes < 1)
goto fail;
tag->restrictions = id3_parse_uint(&ehptr, 1);
ehptr += bytes - 1;
}
}
break;
}
}
/* frames */
while (ptr < end) {
struct id3_frame *frame;
if (*ptr == 0)
break; /* padding */
frame = id3_frame_parse(&ptr, end - ptr, tag->version);
if (frame == 0 || id3_tag_attachframe(tag, frame) == -1)
goto fail;
}
if (ID3_TAG_VERSION_MAJOR(tag->version) < 4 &&
id3_compat_fixup(tag) == -1)
goto fail;
}
if (0) {
fail:
id3_tag_delete(tag);
tag = 0;
}
if (mem)
free(mem);
return tag;
}
/*
* NAME: tag->parse()
* DESCRIPTION: parse a complete ID3 tag
*/
struct id3_tag *id3_tag_parse(id3_byte_t const *data, id3_length_t length)
{
id3_byte_t const *ptr;
unsigned int version;
int flags;
id3_length_t size;
assert(data);
switch (tagtype(data, length)) {
case TAGTYPE_ID3V1:
return (length < 128) ? 0 : v1_parse(data);
case TAGTYPE_ID3V2:
break;
case TAGTYPE_ID3V2_FOOTER:
case TAGTYPE_NONE:
return 0;
}
/* ID3v2.x */
ptr = data;
parse_header(&ptr, &version, &flags, &size);
switch (ID3_TAG_VERSION_MAJOR(version)) {
case 4:
if (flags & ID3_TAG_FLAG_FOOTERPRESENT)
size += 10;
case 2:
case 3:
return (length < 10 + size) ? 0 : v2_parse(data);
}
return 0;
}
static
void v1_renderstr(struct id3_tag const *tag, char const *frameid,
id3_byte_t **buffer, id3_length_t length)
{
struct id3_frame *frame;
id3_ucs4_t const *string;
frame = id3_tag_findframe(tag, frameid, 0);
if (frame == 0)
string = id3_ucs4_empty;
else {
if (strcmp(frameid, ID3_FRAME_COMMENT) == 0)
string = id3_field_getfullstring(&frame->fields[3]);
else
string = id3_field_getstrings(&frame->fields[1], 0);
}
id3_render_paddedstring(buffer, string, length);
}
/*
* NAME: v1->render()
* DESCRIPTION: render an ID3v1 (or ID3v1.1) tag
*/
static
id3_length_t v1_render(struct id3_tag const *tag, id3_byte_t *buffer)
{
id3_byte_t data[128], *ptr;
struct id3_frame *frame;
unsigned int i;
int genre = -1;
ptr = data;
id3_render_immediate(&ptr, "TAG", 3);
v1_renderstr(tag, ID3_FRAME_TITLE, &ptr, 30);
v1_renderstr(tag, ID3_FRAME_ARTIST, &ptr, 30);
v1_renderstr(tag, ID3_FRAME_ALBUM, &ptr, 30);
v1_renderstr(tag, ID3_FRAME_YEAR, &ptr, 4);
v1_renderstr(tag, ID3_FRAME_COMMENT, &ptr, 30);
/* ID3v1.1 track number */
frame = id3_tag_findframe(tag, ID3_FRAME_TRACK, 0);
if (frame) {
unsigned int track;
track = id3_ucs4_getnumber(id3_field_getstrings(&frame->fields[1], 0));
if (track > 0 && track <= 0xff) {
ptr[-2] = 0;
ptr[-1] = track;
}
}
/* ID3v1 genre number */
frame = id3_tag_findframe(tag, ID3_FRAME_GENRE, 0);
if (frame) {
unsigned int nstrings;
nstrings = id3_field_getnstrings(&frame->fields[1]);
for (i = 0; i < nstrings; ++i) {
genre = id3_genre_number(id3_field_getstrings(&frame->fields[1], i));
if (genre != -1)
break;
}
if (i == nstrings && nstrings > 0)
genre = ID3_GENRE_OTHER;
}
id3_render_int(&ptr, genre, 1);
/* make sure the tag is not empty */
if (genre == -1) {
for (i = 3; i < 127; ++i) {
if (data[i] != ' ')
break;
}
if (i == 127)
return 0;
}
if (buffer)
memcpy(buffer, data, 128);
return 128;
}
/*
* NAME: tag->render()
* DESCRIPTION: render a complete ID3 tag
*/
id3_length_t id3_tag_render(struct id3_tag const *tag, id3_byte_t *buffer)
{
id3_length_t size = 0;
id3_byte_t **ptr,
*header_ptr = 0, *tagsize_ptr = 0, *crc_ptr = 0, *frames_ptr = 0;
int flags, extendedflags;
unsigned int i;
assert(tag);
if (tag->options & ID3_TAG_OPTION_ID3V1)
return v1_render(tag, buffer);
/* a tag must contain at least one (renderable) frame */
for (i = 0; i < tag->nframes; ++i) {
if (id3_frame_render(tag->frames[i], 0, 0) > 0)
break;
}
if (i == tag->nframes)
return 0;
ptr = buffer ? &buffer : 0;
/* get flags */
flags = tag->flags & ID3_TAG_FLAG_KNOWNFLAGS;
extendedflags = tag->extendedflags & ID3_TAG_EXTENDEDFLAG_KNOWNFLAGS;
extendedflags &= ~ID3_TAG_EXTENDEDFLAG_CRCDATAPRESENT;
if (tag->options & ID3_TAG_OPTION_CRC)
extendedflags |= ID3_TAG_EXTENDEDFLAG_CRCDATAPRESENT;
extendedflags &= ~ID3_TAG_EXTENDEDFLAG_TAGRESTRICTIONS;
if (tag->restrictions)
extendedflags |= ID3_TAG_EXTENDEDFLAG_TAGRESTRICTIONS;
flags &= ~ID3_TAG_FLAG_UNSYNCHRONISATION;
if (tag->options & ID3_TAG_OPTION_UNSYNCHRONISATION)
flags |= ID3_TAG_FLAG_UNSYNCHRONISATION;
flags &= ~ID3_TAG_FLAG_EXTENDEDHEADER;
if (extendedflags)
flags |= ID3_TAG_FLAG_EXTENDEDHEADER;
flags &= ~ID3_TAG_FLAG_FOOTERPRESENT;
if (tag->options & ID3_TAG_OPTION_APPENDEDTAG)
flags |= ID3_TAG_FLAG_FOOTERPRESENT;
/* header */
if (ptr)
header_ptr = *ptr;
size += id3_render_immediate(ptr, "ID3", 3);
size += id3_render_int(ptr, ID3_TAG_VERSION, 2);
size += id3_render_int(ptr, flags, 1);
if (ptr)
tagsize_ptr = *ptr;
size += id3_render_syncsafe(ptr, 0, 4);
/* extended header */
if (flags & ID3_TAG_FLAG_EXTENDEDHEADER) {
id3_length_t ehsize = 0;
id3_byte_t *ehsize_ptr = 0;
if (ptr)
ehsize_ptr = *ptr;
ehsize += id3_render_syncsafe(ptr, 0, 4);
ehsize += id3_render_int(ptr, 1, 1);
ehsize += id3_render_int(ptr, extendedflags, 1);
if (extendedflags & ID3_TAG_EXTENDEDFLAG_TAGISANUPDATE)
ehsize += id3_render_int(ptr, 0, 1);
if (extendedflags & ID3_TAG_EXTENDEDFLAG_CRCDATAPRESENT) {
ehsize += id3_render_int(ptr, 5, 1);
if (ptr)
crc_ptr = *ptr;
ehsize += id3_render_syncsafe(ptr, 0, 5);
}
if (extendedflags & ID3_TAG_EXTENDEDFLAG_TAGRESTRICTIONS) {
ehsize += id3_render_int(ptr, 1, 1);
ehsize += id3_render_int(ptr, tag->restrictions, 1);
}
if (ehsize_ptr)
id3_render_syncsafe(&ehsize_ptr, ehsize, 4);
size += ehsize;
}
/* frames */
if (ptr)
frames_ptr = *ptr;
for (i = 0; i < tag->nframes; ++i)
size += id3_frame_render(tag->frames[i], ptr, tag->options);
/* padding */
if (!(flags & ID3_TAG_FLAG_FOOTERPRESENT)) {
if (size < tag->paddedsize)
size += id3_render_padding(ptr, 0, tag->paddedsize - size);
else if (tag->options & ID3_TAG_OPTION_UNSYNCHRONISATION) {
if (ptr == 0)
size += 1;
else {
if ((*ptr)[-1] == 0xff)
size += id3_render_padding(ptr, 0, 1);
}
}
}
/* patch tag size and CRC */
if (tagsize_ptr)
id3_render_syncsafe(&tagsize_ptr, size - 10, 4);
if (crc_ptr) {
id3_render_syncsafe(&crc_ptr,
id3_crc_compute(frames_ptr, *ptr - frames_ptr), 5);
}
/* footer */
if (flags & ID3_TAG_FLAG_FOOTERPRESENT) {
size += id3_render_immediate(ptr, "3DI", 3);
size += id3_render_binary(ptr, header_ptr + 3, 7);
}
return size;
}
libid3tag/tag.h
+30
View File
@@ -0,0 +1,30 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: tag.h,v 1.10 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_TAG_H
# define LIBID3TAG_TAG_H
# include "id3tag.h"
void id3_tag_addref(struct id3_tag *);
void id3_tag_delref(struct id3_tag *);
# endif
libid3tag/ucs4.c
+224
View File
@@ -0,0 +1,224 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: ucs4.c,v 1.13 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include "id3tag.h"
# include "ucs4.h"
# include "latin1.h"
# include "utf16.h"
# include "utf8.h"
id3_ucs4_t const id3_ucs4_empty[] = { 0 };
/*
* NAME: ucs4->length()
* DESCRIPTION: return the number of ucs4 chars represented by a ucs4 string
*/
id3_length_t id3_ucs4_length(id3_ucs4_t const *ucs4)
{
id3_ucs4_t const *ptr = ucs4;
while (*ptr)
++ptr;
return ptr - ucs4;
}
/*
* NAME: ucs4->size()
* DESCRIPTION: return the encoding size of a ucs4 string
*/
id3_length_t id3_ucs4_size(id3_ucs4_t const *ucs4)
{
return id3_ucs4_length(ucs4) + 1;
}
/*
* NAME: ucs4->latin1size()
* DESCRIPTION: return the encoding size of a latin1-encoded ucs4 string
*/
id3_length_t id3_ucs4_latin1size(id3_ucs4_t const *ucs4)
{
return id3_ucs4_size(ucs4);
}
/*
* NAME: ucs4->utf16size()
* DESCRIPTION: return the encoding size of a utf16-encoded ucs4 string
*/
id3_length_t id3_ucs4_utf16size(id3_ucs4_t const *ucs4)
{
id3_length_t size = 0;
while (*ucs4) {
++size;
if (*ucs4 >= 0x00010000L &&
*ucs4 <= 0x0010ffffL)
++size;
++ucs4;
}
return size + 1;
}
/*
* NAME: ucs4->utf8size()
* DESCRIPTION: return the encoding size of a utf8-encoded ucs4 string
*/
id3_length_t id3_ucs4_utf8size(id3_ucs4_t const *ucs4)
{
id3_length_t size = 0;
while (*ucs4) {
if (*ucs4 <= 0x0000007fL)
size += 1;
else if (*ucs4 <= 0x000007ffL)
size += 2;
else if (*ucs4 <= 0x0000ffffL)
size += 3;
else if (*ucs4 <= 0x001fffffL)
size += 4;
else if (*ucs4 <= 0x03ffffffL)
size += 5;
else if (*ucs4 <= 0x7fffffffL)
size += 6;
else
size += 2; /* based on U+00B7 replacement char */
++ucs4;
}
return size + 1;
}
/*
* NAME: ucs4->latin1duplicate()
* DESCRIPTION: duplicate and encode a ucs4 string into latin1
*/
id3_latin1_t *id3_ucs4_latin1duplicate(id3_ucs4_t const *ucs4)
{
id3_latin1_t *latin1;
latin1 = malloc(id3_ucs4_latin1size(ucs4) * sizeof(*latin1));
if (latin1)
id3_latin1_encode(latin1, ucs4);
return release(latin1);
}
/*
* NAME: ucs4->utf16duplicate()
* DESCRIPTION: duplicate and encode a ucs4 string into utf16
*/
id3_utf16_t *id3_ucs4_utf16duplicate(id3_ucs4_t const *ucs4)
{
id3_utf16_t *utf16;
utf16 = malloc(id3_ucs4_utf16size(ucs4) * sizeof(*utf16));
if (utf16)
id3_utf16_encode(utf16, ucs4);
return release(utf16);
}
/*
* NAME: ucs4->utf8duplicate()
* DESCRIPTION: duplicate and encode a ucs4 string into utf8
*/
id3_utf8_t *id3_ucs4_utf8duplicate(id3_ucs4_t const *ucs4)
{
id3_utf8_t *utf8;
utf8 = malloc(id3_ucs4_utf8size(ucs4) * sizeof(*utf8));
if (utf8)
id3_utf8_encode(utf8, ucs4);
return release(utf8);
}
/*
* NAME: ucs4->copy()
* DESCRIPTION: copy a ucs4 string
*/
void id3_ucs4_copy(id3_ucs4_t *dest, id3_ucs4_t const *src)
{
while ((*dest++ = *src++))
;
}
/*
* NAME: ucs4->duplicate()
* DESCRIPTION: duplicate a ucs4 string
*/
id3_ucs4_t *id3_ucs4_duplicate(id3_ucs4_t const *src)
{
id3_ucs4_t *ucs4;
ucs4 = malloc(id3_ucs4_size(src) * sizeof(*ucs4));
if (ucs4)
id3_ucs4_copy(ucs4, src);
return ucs4;
}
/*
* NAME: ucs4->putnumber()
* DESCRIPTION: write a ucs4 string containing a (positive) decimal number
*/
void id3_ucs4_putnumber(id3_ucs4_t *ucs4, unsigned long number)
{
int digits[10], *digit;
digit = digits;
do {
*digit++ = number % 10;
number /= 10;
}
while (number);
while (digit != digits)
*ucs4++ = '0' + *--digit;
*ucs4 = 0;
}
/*
* NAME: ucs4->getnumber()
* DESCRIPTION: read a ucs4 string containing a (positive) decimal number
*/
unsigned long id3_ucs4_getnumber(id3_ucs4_t const *ucs4)
{
unsigned long number = 0;
while (*ucs4 >= '0' && *ucs4 <= '9')
number = 10 * number + (*ucs4++ - '0');
return number;
}
libid3tag/ucs4.h
+41
View File
@@ -0,0 +1,41 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: ucs4.h,v 1.11 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_UCS4_H
# define LIBID3TAG_UCS4_H
# include "id3tag.h"
# define ID3_UCS4_REPLACEMENTCHAR 0x000000b7L /* middle dot */
extern id3_ucs4_t const id3_ucs4_empty[];
id3_length_t id3_ucs4_length(id3_ucs4_t const *);
id3_length_t id3_ucs4_size(id3_ucs4_t const *);
id3_length_t id3_ucs4_latin1size(id3_ucs4_t const *);
id3_length_t id3_ucs4_utf16size(id3_ucs4_t const *);
id3_length_t id3_ucs4_utf8size(id3_ucs4_t const *);
void id3_ucs4_copy(id3_ucs4_t *, id3_ucs4_t const *);
id3_ucs4_t *id3_ucs4_duplicate(id3_ucs4_t const *);
# endif
libid3tag/utf16.c
+286
View File
@@ -0,0 +1,286 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: utf16.c,v 1.9 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include "id3tag.h"
# include "utf16.h"
# include "ucs4.h"
/*
* NAME: utf16->length()
* DESCRIPTION: return the number of ucs4 chars represented by a utf16 string
*/
id3_length_t id3_utf16_length(id3_utf16_t const *utf16)
{
id3_length_t length = 0;
while (*utf16) {
if (utf16[0] < 0xd800 || utf16[0] > 0xdfff)
++length;
else if (utf16[0] >= 0xd800 && utf16[0] <= 0xdbff &&
utf16[1] >= 0xdc00 && utf16[1] <= 0xdfff) {
++length;
++utf16;
}
++utf16;
}
return length;
}
/*
* NAME: utf16->size()
* DESCRIPTION: return the encoding size of a utf16 string
*/
id3_length_t id3_utf16_size(id3_utf16_t const *utf16)
{
id3_utf16_t const *ptr = utf16;
while (*ptr)
++ptr;
return ptr - utf16 + 1;
}
/*
* NAME: utf16->ucs4duplicate()
* DESCRIPTION: duplicate and decode a utf16 string into ucs4
*/
id3_ucs4_t *id3_utf16_ucs4duplicate(id3_utf16_t const *utf16)
{
id3_ucs4_t *ucs4;
ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
if (ucs4)
id3_utf16_decode(utf16, ucs4);
return release(ucs4);
}
/*
* NAME: utf16->decodechar()
* DESCRIPTION: decode a series of utf16 chars into a single ucs4 char
*/
id3_length_t id3_utf16_decodechar(id3_utf16_t const *utf16, id3_ucs4_t *ucs4)
{
id3_utf16_t const *start = utf16;
while (1) {
if (utf16[0] < 0xd800 || utf16[0] > 0xdfff) {
*ucs4 = utf16[0];
return utf16 - start + 1;
}
else if (utf16[0] >= 0xd800 && utf16[0] <= 0xdbff &&
utf16[1] >= 0xdc00 && utf16[1] <= 0xdfff) {
*ucs4 = (((utf16[0] & 0x03ffL) << 10) |
((utf16[1] & 0x03ffL) << 0)) + 0x00010000L;
return utf16 - start + 2;
}
++utf16;
}
}
/*
* NAME: utf16->encodechar()
* DESCRIPTION: encode a single ucs4 char into a series of up to 2 utf16 chars
*/
id3_length_t id3_utf16_encodechar(id3_utf16_t *utf16, id3_ucs4_t ucs4)
{
if (ucs4 < 0x00010000L) {
utf16[0] = ucs4;
return 1;
}
else if (ucs4 < 0x00110000L) {
ucs4 -= 0x00010000L;
utf16[0] = ((ucs4 >> 10) & 0x3ff) | 0xd800;
utf16[1] = ((ucs4 >> 0) & 0x3ff) | 0xdc00;
return 2;
}
/* default */
return id3_utf16_encodechar(utf16, ID3_UCS4_REPLACEMENTCHAR);
}
/*
* NAME: utf16->decode()
* DESCRIPTION: decode a complete utf16 string into a ucs4 string
*/
void id3_utf16_decode(id3_utf16_t const *utf16, id3_ucs4_t *ucs4)
{
do
utf16 += id3_utf16_decodechar(utf16, ucs4);
while (*ucs4++);
}
/*
* NAME: utf16->encode()
* DESCRIPTION: encode a complete ucs4 string into a utf16 string
*/
void id3_utf16_encode(id3_utf16_t *utf16, id3_ucs4_t const *ucs4)
{
do
utf16 += id3_utf16_encodechar(utf16, *ucs4);
while (*ucs4++);
}
/*
* NAME: utf16->put()
* DESCRIPTION: serialize a single utf16 character
*/
id3_length_t id3_utf16_put(id3_byte_t **ptr, id3_utf16_t utf16,
enum id3_utf16_byteorder byteorder)
{
if (ptr) {
switch (byteorder) {
default:
case ID3_UTF16_BYTEORDER_BE:
(*ptr)[0] = (utf16 >> 8) & 0xff;
(*ptr)[1] = (utf16 >> 0) & 0xff;
break;
case ID3_UTF16_BYTEORDER_LE:
(*ptr)[0] = (utf16 >> 0) & 0xff;
(*ptr)[1] = (utf16 >> 8) & 0xff;
break;
}
*ptr += 2;
}
return 2;
}
/*
* NAME: utf16->get()
* DESCRIPTION: deserialize a single utf16 character
*/
id3_utf16_t id3_utf16_get(id3_byte_t const **ptr,
enum id3_utf16_byteorder byteorder)
{
id3_utf16_t utf16;
switch (byteorder) {
default:
case ID3_UTF16_BYTEORDER_BE:
utf16 =
((*ptr)[0] << 8) |
((*ptr)[1] << 0);
break;
case ID3_UTF16_BYTEORDER_LE:
utf16 =
((*ptr)[0] << 0) |
((*ptr)[1] << 8);
break;
}
*ptr += 2;
return utf16;
}
/*
* NAME: utf16->serialize()
* DESCRIPTION: serialize a ucs4 string using utf16 encoding
*/
id3_length_t id3_utf16_serialize(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
enum id3_utf16_byteorder byteorder,
int terminate)
{
id3_length_t size = 0;
id3_utf16_t utf16[2], *out;
if (byteorder == ID3_UTF16_BYTEORDER_ANY)
size += id3_utf16_put(ptr, 0xfeff, byteorder);
while (*ucs4) {
switch (id3_utf16_encodechar(out = utf16, *ucs4++)) {
case 2: size += id3_utf16_put(ptr, *out++, byteorder);
case 1: size += id3_utf16_put(ptr, *out++, byteorder);
case 0: break;
}
}
if (terminate)
size += id3_utf16_put(ptr, 0, byteorder);
return size;
}
/*
* NAME: utf16->deserialize()
* DESCRIPTION: deserialize a ucs4 string using utf16 encoding
*/
id3_ucs4_t *id3_utf16_deserialize(id3_byte_t const **ptr, id3_length_t length,
enum id3_utf16_byteorder byteorder)
{
id3_byte_t const *end;
id3_utf16_t *utf16ptr, *utf16;
id3_ucs4_t *ucs4;
end = *ptr + (length & ~1);
utf16 = malloc((length / 2 + 1) * sizeof(*utf16));
if (utf16 == 0)
return 0;
if (byteorder == ID3_UTF16_BYTEORDER_ANY && end - *ptr > 0) {
switch (((*ptr)[0] << 8) |
((*ptr)[1] << 0)) {
case 0xfeff:
byteorder = ID3_UTF16_BYTEORDER_BE;
*ptr += 2;
break;
case 0xfffe:
byteorder = ID3_UTF16_BYTEORDER_LE;
*ptr += 2;
break;
}
}
utf16ptr = utf16;
while (end - *ptr > 0 && (*utf16ptr = id3_utf16_get(ptr, byteorder)))
++utf16ptr;
*utf16ptr = 0;
ucs4 = malloc((id3_utf16_length(utf16) + 1) * sizeof(*ucs4));
if (ucs4)
id3_utf16_decode(utf16, ucs4);
free(utf16);
return ucs4;
}
libid3tag/utf16.h
+51
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@@ -0,0 +1,51 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: utf16.h,v 1.8 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_UTF16_H
# define LIBID3TAG_UTF16_H
# include "id3tag.h"
enum id3_utf16_byteorder {
ID3_UTF16_BYTEORDER_ANY,
ID3_UTF16_BYTEORDER_BE,
ID3_UTF16_BYTEORDER_LE
};
id3_length_t id3_utf16_length(id3_utf16_t const *);
id3_length_t id3_utf16_size(id3_utf16_t const *);
id3_length_t id3_utf16_decodechar(id3_utf16_t const *, id3_ucs4_t *);
id3_length_t id3_utf16_encodechar(id3_utf16_t *, id3_ucs4_t);
void id3_utf16_decode(id3_utf16_t const *, id3_ucs4_t *);
void id3_utf16_encode(id3_utf16_t *, id3_ucs4_t const *);
id3_length_t id3_utf16_put(id3_byte_t **, id3_utf16_t,
enum id3_utf16_byteorder);
id3_utf16_t id3_utf16_get(id3_byte_t const **, enum id3_utf16_byteorder);
id3_length_t id3_utf16_serialize(id3_byte_t **, id3_ucs4_t const *,
enum id3_utf16_byteorder, int);
id3_ucs4_t *id3_utf16_deserialize(id3_byte_t const **, id3_length_t,
enum id3_utf16_byteorder);
# endif
libid3tag/utf8.c
+365
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@@ -0,0 +1,365 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: utf8.c,v 1.9 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include "id3tag.h"
# include "utf8.h"
# include "ucs4.h"
/*
* NAME: utf8->length()
* DESCRIPTION: return the number of ucs4 chars represented by a utf8 string
*/
id3_length_t id3_utf8_length(id3_utf8_t const *utf8)
{
id3_length_t length = 0;
while (*utf8) {
if ((utf8[0] & 0x80) == 0x00)
++length;
else if ((utf8[0] & 0xe0) == 0xc0 &&
(utf8[1] & 0xc0) == 0x80) {
if (((utf8[0] & 0x1fL) << 6) >= 0x00000080L) {
++length;
utf8 += 1;
}
}
else if ((utf8[0] & 0xf0) == 0xe0 &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80) {
if ((((utf8[0] & 0x0fL) << 12) |
((utf8[1] & 0x3fL) << 6)) >= 0x00000800L) {
++length;
utf8 += 2;
}
}
else if ((utf8[0] & 0xf8) == 0xf0 &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80 &&
(utf8[3] & 0xc0) == 0x80) {
if ((((utf8[0] & 0x07L) << 18) |
((utf8[1] & 0x3fL) << 12)) >= 0x00010000L) {
++length;
utf8 += 3;
}
}
else if ((utf8[0] & 0xfc) == 0xf8 &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80 &&
(utf8[3] & 0xc0) == 0x80 &&
(utf8[4] & 0xc0) == 0x80) {
if ((((utf8[0] & 0x03L) << 24) |
((utf8[0] & 0x3fL) << 18)) >= 0x00200000L) {
++length;
utf8 += 4;
}
}
else if ((utf8[0] & 0xfe) == 0xfc &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80 &&
(utf8[3] & 0xc0) == 0x80 &&
(utf8[4] & 0xc0) == 0x80 &&
(utf8[5] & 0xc0) == 0x80) {
if ((((utf8[0] & 0x01L) << 30) |
((utf8[0] & 0x3fL) << 24)) >= 0x04000000L) {
++length;
utf8 += 5;
}
}
++utf8;
}
return length;
}
/*
* NAME: utf8->size()
* DESCRIPTION: return the encoding size of a utf8 string
*/
id3_length_t id3_utf8_size(id3_utf8_t const *utf8)
{
id3_utf8_t const *ptr = utf8;
while (*ptr)
++ptr;
return ptr - utf8 + 1;
}
/*
* NAME: utf8->ucs4duplicate()
* DESCRIPTION: duplicate and decode a utf8 string into ucs4
*/
id3_ucs4_t *id3_utf8_ucs4duplicate(id3_utf8_t const *utf8)
{
id3_ucs4_t *ucs4;
ucs4 = malloc((id3_utf8_length(utf8) + 1) * sizeof(*ucs4));
if (ucs4)
id3_utf8_decode(utf8, ucs4);
return release(ucs4);
}
/*
* NAME: utf8->decodechar()
* DESCRIPTION: decode a series of utf8 chars into a single ucs4 char
*/
id3_length_t id3_utf8_decodechar(id3_utf8_t const *utf8, id3_ucs4_t *ucs4)
{
id3_utf8_t const *start = utf8;
while (1) {
if ((utf8[0] & 0x80) == 0x00) {
*ucs4 = utf8[0];
return utf8 - start + 1;
}
else if ((utf8[0] & 0xe0) == 0xc0 &&
(utf8[1] & 0xc0) == 0x80) {
*ucs4 =
((utf8[0] & 0x1fL) << 6) |
((utf8[1] & 0x3fL) << 0);
if (*ucs4 >= 0x00000080L)
return utf8 - start + 2;
}
else if ((utf8[0] & 0xf0) == 0xe0 &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80) {
*ucs4 =
((utf8[0] & 0x0fL) << 12) |
((utf8[1] & 0x3fL) << 6) |
((utf8[2] & 0x3fL) << 0);
if (*ucs4 >= 0x00000800L)
return utf8 - start + 3;
}
else if ((utf8[0] & 0xf8) == 0xf0 &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80 &&
(utf8[3] & 0xc0) == 0x80) {
*ucs4 =
((utf8[0] & 0x07L) << 18) |
((utf8[1] & 0x3fL) << 12) |
((utf8[2] & 0x3fL) << 6) |
((utf8[3] & 0x3fL) << 0);
if (*ucs4 >= 0x00010000L)
return utf8 - start + 4;
}
else if ((utf8[0] & 0xfc) == 0xf8 &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80 &&
(utf8[3] & 0xc0) == 0x80 &&
(utf8[4] & 0xc0) == 0x80) {
*ucs4 =
((utf8[0] & 0x03L) << 24) |
((utf8[1] & 0x3fL) << 18) |
((utf8[2] & 0x3fL) << 12) |
((utf8[3] & 0x3fL) << 6) |
((utf8[4] & 0x3fL) << 0);
if (*ucs4 >= 0x00200000L)
return utf8 - start + 5;
}
else if ((utf8[0] & 0xfe) == 0xfc &&
(utf8[1] & 0xc0) == 0x80 &&
(utf8[2] & 0xc0) == 0x80 &&
(utf8[3] & 0xc0) == 0x80 &&
(utf8[4] & 0xc0) == 0x80 &&
(utf8[5] & 0xc0) == 0x80) {
*ucs4 =
((utf8[0] & 0x01L) << 30) |
((utf8[1] & 0x3fL) << 24) |
((utf8[2] & 0x3fL) << 18) |
((utf8[3] & 0x3fL) << 12) |
((utf8[4] & 0x3fL) << 6) |
((utf8[5] & 0x3fL) << 0);
if (*ucs4 >= 0x04000000L)
return utf8 - start + 6;
}
++utf8;
}
}
/*
* NAME: utf8->encodechar()
* DESCRIPTION: encode a single ucs4 char into a series of up to 6 utf8 chars
*/
id3_length_t id3_utf8_encodechar(id3_utf8_t *utf8, id3_ucs4_t ucs4)
{
if (ucs4 <= 0x0000007fL) {
utf8[0] = ucs4;
return 1;
}
else if (ucs4 <= 0x000007ffL) {
utf8[0] = 0xc0 | ((ucs4 >> 6) & 0x1f);
utf8[1] = 0x80 | ((ucs4 >> 0) & 0x3f);
return 2;
}
else if (ucs4 <= 0x0000ffffL) {
utf8[0] = 0xe0 | ((ucs4 >> 12) & 0x0f);
utf8[1] = 0x80 | ((ucs4 >> 6) & 0x3f);
utf8[2] = 0x80 | ((ucs4 >> 0) & 0x3f);
return 3;
}
else if (ucs4 <= 0x001fffffL) {
utf8[0] = 0xf0 | ((ucs4 >> 18) & 0x07);
utf8[1] = 0x80 | ((ucs4 >> 12) & 0x3f);
utf8[2] = 0x80 | ((ucs4 >> 6) & 0x3f);
utf8[3] = 0x80 | ((ucs4 >> 0) & 0x3f);
return 4;
}
else if (ucs4 <= 0x03ffffffL) {
utf8[0] = 0xf8 | ((ucs4 >> 24) & 0x03);
utf8[1] = 0x80 | ((ucs4 >> 18) & 0x3f);
utf8[2] = 0x80 | ((ucs4 >> 12) & 0x3f);
utf8[3] = 0x80 | ((ucs4 >> 6) & 0x3f);
utf8[4] = 0x80 | ((ucs4 >> 0) & 0x3f);
return 5;
}
else if (ucs4 <= 0x7fffffffL) {
utf8[0] = 0xfc | ((ucs4 >> 30) & 0x01);
utf8[1] = 0x80 | ((ucs4 >> 24) & 0x3f);
utf8[2] = 0x80 | ((ucs4 >> 18) & 0x3f);
utf8[3] = 0x80 | ((ucs4 >> 12) & 0x3f);
utf8[4] = 0x80 | ((ucs4 >> 6) & 0x3f);
utf8[5] = 0x80 | ((ucs4 >> 0) & 0x3f);
return 6;
}
/* default */
return id3_utf8_encodechar(utf8, ID3_UCS4_REPLACEMENTCHAR);
}
/*
* NAME: utf8->decode()
* DESCRIPTION: decode a complete utf8 string into a ucs4 string
*/
void id3_utf8_decode(id3_utf8_t const *utf8, id3_ucs4_t *ucs4)
{
do
utf8 += id3_utf8_decodechar(utf8, ucs4);
while (*ucs4++);
}
/*
* NAME: utf8->encode()
* DESCRIPTION: encode a complete ucs4 string into a utf8 string
*/
void id3_utf8_encode(id3_utf8_t *utf8, id3_ucs4_t const *ucs4)
{
do
utf8 += id3_utf8_encodechar(utf8, *ucs4);
while (*ucs4++);
}
/*
* NAME: utf8->put()
* DESCRIPTION: serialize a single utf8 character
*/
id3_length_t id3_utf8_put(id3_byte_t **ptr, id3_utf8_t utf8)
{
if (ptr)
*(*ptr)++ = utf8;
return 1;
}
/*
* NAME: utf8->get()
* DESCRIPTION: deserialize a single utf8 character
*/
id3_utf8_t id3_utf8_get(id3_byte_t const **ptr)
{
return *(*ptr)++;
}
/*
* NAME: utf8->serialize()
* DESCRIPTION: serialize a ucs4 string using utf8 encoding
*/
id3_length_t id3_utf8_serialize(id3_byte_t **ptr, id3_ucs4_t const *ucs4,
int terminate)
{
id3_length_t size = 0;
id3_utf8_t utf8[6], *out;
while (*ucs4) {
switch (id3_utf8_encodechar(out = utf8, *ucs4++)) {
case 6: size += id3_utf8_put(ptr, *out++);
case 5: size += id3_utf8_put(ptr, *out++);
case 4: size += id3_utf8_put(ptr, *out++);
case 3: size += id3_utf8_put(ptr, *out++);
case 2: size += id3_utf8_put(ptr, *out++);
case 1: size += id3_utf8_put(ptr, *out++);
case 0: break;
}
}
if (terminate)
size += id3_utf8_put(ptr, 0);
return size;
}
/*
* NAME: utf8->deserialize()
* DESCRIPTION: deserialize a ucs4 string using utf8 encoding
*/
id3_ucs4_t *id3_utf8_deserialize(id3_byte_t const **ptr, id3_length_t length)
{
id3_byte_t const *end;
id3_utf8_t *utf8ptr, *utf8;
id3_ucs4_t *ucs4;
end = *ptr + length;
utf8 = malloc((length + 1) * sizeof(*utf8));
if (utf8 == 0)
return 0;
utf8ptr = utf8;
while (end - *ptr > 0 && (*utf8ptr = id3_utf8_get(ptr)))
++utf8ptr;
*utf8ptr = 0;
ucs4 = malloc((id3_utf8_length(utf8) + 1) * sizeof(*ucs4));
if (ucs4)
id3_utf8_decode(utf8, ucs4);
free(utf8);
return ucs4;
}
libid3tag/utf8.h
+42
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@@ -0,0 +1,42 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: utf8.h,v 1.7 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_UTF8_H
# define LIBID3TAG_UTF8_H
# include "id3tag.h"
id3_length_t id3_utf8_length(id3_utf8_t const *);
id3_length_t id3_utf8_size(id3_utf8_t const *);
id3_length_t id3_utf8_decodechar(id3_utf8_t const *, id3_ucs4_t *);
id3_length_t id3_utf8_encodechar(id3_utf8_t *, id3_ucs4_t);
void id3_utf8_decode(id3_utf8_t const *, id3_ucs4_t *);
void id3_utf8_encode(id3_utf8_t *, id3_ucs4_t const *);
id3_length_t id3_utf8_put(id3_byte_t **, id3_utf8_t);
id3_utf8_t id3_utf8_get(id3_byte_t const **);
id3_length_t id3_utf8_serialize(id3_byte_t **, id3_ucs4_t const *, int);
id3_ucs4_t *id3_utf8_deserialize(id3_byte_t const **, id3_length_t);
# endif
libid3tag/util.c
+147
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@@ -0,0 +1,147 @@
/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: util.c,v 1.9 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include <stdlib.h>
# include <zlib.h>
# include "id3tag.h"
# include "util.h"
/*
* NAME: util->unsynchronise()
* DESCRIPTION: perform (in-place) unsynchronisation
*/
id3_length_t id3_util_unsynchronise(id3_byte_t *data, id3_length_t length)
{
id3_length_t bytes = 0, count;
id3_byte_t *end = data + length;
id3_byte_t const *ptr;
if (length == 0)
return 0;
for (ptr = data; ptr < end - 1; ++ptr) {
if (ptr[0] == 0xff && (ptr[1] == 0x00 || (ptr[1] & 0xe0) == 0xe0))
++bytes;
}
if (bytes) {
ptr = end;
end += bytes;
*--end = *--ptr;
for (count = bytes; count; *--end = *--ptr) {
if (ptr[-1] == 0xff && (ptr[0] == 0x00 || (ptr[0] & 0xe0) == 0xe0)) {
*--end = 0x00;
--count;
}
}
}
return length + bytes;
}
/*
* NAME: util->deunsynchronise()
* DESCRIPTION: undo unsynchronisation (in-place)
*/
id3_length_t id3_util_deunsynchronise(id3_byte_t *data, id3_length_t length)
{
id3_byte_t const *old, *end = data + length;
id3_byte_t *new;
if (length == 0)
return 0;
for (old = new = data; old < end - 1; ++old) {
*new++ = *old;
if (old[0] == 0xff && old[1] == 0x00)
++old;
}
*new++ = *old;
return new - data;
}
/*
* NAME: util->compress()
* DESCRIPTION: perform zlib deflate method compression
*/
id3_byte_t *id3_util_compress(id3_byte_t const *data, id3_length_t length,
id3_length_t *newlength)
{
id3_byte_t *compressed;
*newlength = length + 12;
*newlength += *newlength / 1000;
compressed = malloc(*newlength);
if (compressed) {
if (compress2(compressed, newlength, data, length,
Z_BEST_COMPRESSION) != Z_OK ||
*newlength >= length) {
free(compressed);
compressed = 0;
}
else {
id3_byte_t *resized;
resized = realloc(compressed, *newlength ? *newlength : 1);
if (resized)
compressed = resized;
}
}
return compressed;
}
/*
* NAME: util->decompress()
* DESCRIPTION: undo zlib deflate method compression
*/
id3_byte_t *id3_util_decompress(id3_byte_t const *data, id3_length_t length,
id3_length_t newlength)
{
id3_byte_t *decompressed;
decompressed = malloc(newlength ? newlength : 1);
if (decompressed) {
id3_length_t size;
size = newlength;
if (uncompress(decompressed, &size, data, length) != Z_OK ||
size != newlength) {
free(decompressed);
decompressed = 0;
}
}
return decompressed;
}
libid3tag/util.h
+35
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: util.h,v 1.6 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_UTIL_H
# define LIBID3TAG_UTIL_H
# include "id3tag.h"
id3_length_t id3_util_unsynchronise(id3_byte_t *, id3_length_t);
id3_length_t id3_util_deunsynchronise(id3_byte_t *, id3_length_t);
id3_byte_t *id3_util_compress(id3_byte_t const *, id3_length_t,
id3_length_t *);
id3_byte_t *id3_util_decompress(id3_byte_t const *, id3_length_t,
id3_length_t);
# endif
libid3tag/version.c
+45
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: version.c,v 1.7 2004/01/23 09:41:32 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "global.h"
# include "id3tag.h"
# include "version.h"
char const id3_version[] = "ID3 Tag Library " ID3_VERSION;
char const id3_copyright[] = "Copyright (C) " ID3_PUBLISHYEAR " " ID3_AUTHOR;
char const id3_author[] = ID3_AUTHOR " <" ID3_EMAIL ">";
char const id3_build[] = ""
# if defined(DEBUG)
"DEBUG "
# elif defined(NDEBUG)
"NDEBUG "
# endif
# if defined(EXPERIMENTAL)
"EXPERIMENTAL "
# endif
;
libid3tag/version.h
+25
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/*
* libid3tag - ID3 tag manipulation library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* 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
*
* $Id: version.h,v 1.7 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBID3TAG_VERSION_H
# define LIBID3TAG_VERSION_H
# endif