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junklib.c
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/*
This file is part of Deadbeef Player source code
http://deadbeef.sourceforge.net
library for reading tags from various audio files
Copyright (C) 2009-2016 Alexey Yakovenko
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Alexey Yakovenko [email protected]
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "junklib.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_ICONV
#ifndef __MINGW32__
#define LIBICONV_PLUG
#endif
#include <iconv.h>
#elif HAVE_ICU
#warning icu
#include <unicode/utypes.h>
#include <unicode/ucnv.h>
#else
#define DDB_RECODE
#include "ConvertUTF/ConvertUTF.h"
uint16_t sj_to_unicode[] = {
#include "sj_to_unicode.h"
};
#endif
#include <limits.h>
#include <errno.h>
#include <ctype.h>
#include <unistd.h>
#include <assert.h>
#include <fcntl.h>
#ifndef __linux__
#define O_LARGEFILE 0
#endif
#include <sys/stat.h>
#include "playlist.h"
#include "utf8.h"
#include "plugins.h"
#include "conf.h"
int enable_cp1251_detection = 1;
int enable_cp936_detection = 0;
int enable_shift_jis_detection = 0;
#define MAX_TEXT_FRAME_SIZE 10000
#define MAX_CUESHEET_FRAME_SIZE 10000
#define MAX_APEV2_FRAME_SIZE 2000000
#define MAX_ID3V2_FRAME_SIZE 100000
#define MAX_ID3V2_APIC_FRAME_SIZE 2000000
#define UTF8_STR "utf-8"
//#define trace(...) { fprintf(stderr, __VA_ARGS__); }
#define trace(fmt,...)
#define min(x,y) ((x)<(y)?(x):(y))
#define max(x,y) ((x)>(y)?(x):(y))
// mapping between ddb metadata names and id3v2/apev2 names
#define FRAME_MAPPINGS 5
enum {
MAP_DDB = 0,
MAP_ID3V23 = 1,
MAP_ID3V24 = 2,
MAP_ID3V22 = 3,
MAP_APEV2 = 4
};
// map of known id3v2 and apev2 text tags
// order: ddb, id3-2.3, 2.4, 2.2, apev2
static const char *frame_mapping[] = {
// these tags will be displayed and edited uniformly for all tag types
"artist", "TPE1", "TPE1", "TP1", "Artist",
"disc", "TPOS", "TPOS", "TPA", "Disc", // NOTE: this is special case when writing id3v2
"title", "TIT2", "TIT2", "TT2", "Title",
"album", "TALB", "TALB", "TAL", "Album",
"copyright", "TCOP", "TCOP", "TCO", "Copyright",
"genre", "TCON", "TCON", "TCO", "Genre",
"composer", "TCOM", "TCOM", "TCM", "Composer",
"year", "TYER", "TDRC", "TYE", "Year", // NOTE: TDRC and TYER are slightly different, and are converted on read/write
"track", "TRCK", "TRCK", "TRK", "Track", // NOTE: this is special case when writing id3v2
// misc id3v2 fields
// these might or might not have appropriate fields in every tag type
"BAND", "TPE2", "TPE2", "TP2", NULL,
"ENCODER", "TENC", "TENC", "TEN", NULL,
"BEATS_PER_MINUTE", "TBPM", "TBPM", "TBP", NULL,
"PLAYLIST_DELAY", "TDLY", "TDLY", "TDY", NULL,
"TEXT_WRITERS", "TEXT", "TEXT", "TXT", NULL,
"FILE_TYPE", "TFLT", "TFLT", "TFT", NULL,
"CONTENT_GROUP_DESCRIPTION", "TIT1", "TIT1", "TT1", NULL,
"SUBTITLE", "TIT3", "TIT3", "TT3", NULL,
"INITIAL_KEY", "TKEY", "TKEY", "TKE", NULL,
"LANGUAGE", "TLAN", "TLAN", "TLA", NULL,
"LENGTH", "TLEN", "TLEN", "TLE", NULL,
"MEDIA TYPE", "TMED", "TMED", "TMT", NULL,
"ORIGINAL_ALBUM_TITLE", "TOAL", "TOAL", "TOT", NULL,
"ORIGINAL_FILENAME", "TOFN", "TOFN", "TOF", NULL,
"ORIGINAL_TEXT_WRITERS", "TOLY", "TOLY", "TOL", NULL,
"ORIGINAL_ARTISTS", "TOPE", "TOPE", "TOA", NULL,
"FILE_OWNER", "TOWN", "TOWN", NULL, NULL,
"PERFORMER_REFINEMENT", "TPE3", "TPE3", "TP3", NULL,
"MODIFIED_BY", "TPE4", "TPE4", "TP4", NULL,
"PUBLISHER", "TPUB", "TPUB", "TPB", NULL,
"INTERNET_RADIO_STATION_NAME", "TRSN", "TRSN", NULL, NULL,
"INTERNET_RADIO_STATION_OWNER", "TRSO", "TRSO", NULL, NULL,
"ISRC", "TSRC", "TSRC", NULL, NULL,
"ENCODING_SOFTWARE_HARDWARE", "TSSE", "TSSE", "TSS", NULL,
"RECORDING_TIME", NULL, "TDRC", NULL, NULL,
"RELEASE_TIME", NULL, "TDRL", NULL, NULL,
"TAGGING_TIME", NULL, "TDTG", NULL, NULL,
"ALBUM_SORT_ORDER", NULL, "TSOA", NULL, NULL,
"PERFORMER_SORT_ORDER", NULL, "TSOP", NULL, NULL,
"TITLE_SORT_ORDER", NULL, "TSOT", NULL, NULL,
"SIZE", "TSIZ", NULL, "TSI", NULL,
"RECORDING_DATES", "TRDA", NULL, "TRD", NULL,
"INVOLVED_PEOPLE_LIST", NULL, "TIPL", NULL, NULL,
"MUSICIAN_CREDITS_LIST", NULL, "TMCL", NULL, NULL,
"ENCODING_TIME", NULL, "TDEN", NULL, NULL,
"ORIGINAL_RELEASE_TIME", NULL, "TDOR", NULL, NULL,
"ORIGINAL_RELEASE_YEAR", NULL, NULL, NULL, "ORIGINALYEAR",
"MOOD", NULL, "TMOO", NULL, NULL,
"PRODUCED_NOTICE", NULL, "TPRO", NULL, NULL,
"musicbrainz_trackid", NULL, NULL, NULL, NULL,
"rating", NULL, NULL, NULL, NULL,
NULL
};
// replaygain key names in both id3v2.3+ TXX and APEv2
static const char *tag_rg_names[] = {
"REPLAYGAIN_ALBUM_GAIN",
"REPLAYGAIN_ALBUM_PEAK",
"REPLAYGAIN_TRACK_GAIN",
"REPLAYGAIN_TRACK_PEAK",
NULL
};
// replaygain key names in deadbeef internal metadata
const char *ddb_internal_rg_keys[] = {
":REPLAYGAIN_ALBUMGAIN",
":REPLAYGAIN_ALBUMPEAK",
":REPLAYGAIN_TRACKGAIN",
":REPLAYGAIN_TRACKPEAK",
NULL
};
static const char wmp_popm_email[] = "Windows Media Player 9 Series";
static inline uint32_t
extract_i32_le (unsigned char *buf)
{
uint32_t x;
// little endian extract
x = buf[3];
x <<= 8;
x |= buf[2];
x <<= 8;
x |= buf[1];
x <<= 8;
x |= buf[0];
return x;
}
static inline uint16_t
extract_i16 (const uint8_t *buf)
{
uint16_t x;
// big endian extract
x = buf[0];
x <<= 8;
x |= buf[1];
return x;
}
// When reading from tags which don't support multivalue fields natively,
// these fields will be split on '/' symbol,
// and leading and trailing whitespace will get stripped
#define DEFAULT_MULTIVALUE_FIELDS "ARTIST;ALBUM ARTIST;PRODUCER;COMPOSER;PERFORMER;GENRE"
char junk_multivalue_fields[200] = DEFAULT_MULTIVALUE_FIELDS;
static int
_is_multivalue_field (const char *key) {
const char *p = junk_multivalue_fields;
do {
p = strcasestr (p, key);
const char *semicolon = NULL;
if (p) {
semicolon = strchr (p, ';');
if ((p == junk_multivalue_fields || *(p-1) == ';')
&& (
(!semicolon && strlen (p) == strlen (key))
|| (semicolon && semicolon - p == strlen (key))
)
) {
return 1;
}
}
p = semicolon;
} while (p);
return 0;
}
void
_split_multivalue (char *text, size_t text_size) {
for (size_t i = 0; i < text_size; i++) {
if (i < text_size - 3 && !memcmp (&text[i], " / ", 3)) {
// remove trailing spaces
char *p = text + i - 1;
while (p >= text && *p == ' ') {
*p = 0;
p--;
}
memset (text+i, 0, 3);
// remove leading spaces
p = text + i + 3;
while (p < text + text_size && *p == ' ') {
*p = 0;
p++;
}
i = p - text - 1;
}
}
}
static const char *
_get_combined_meta_value (DB_metaInfo_t *meta, int * restrict out_size, const char *separator, size_t separator_len, int *needs_free) {
*out_size = 0;
if (separator_len == 1 && *separator == 0) {
*out_size = meta->valuesize;
*needs_free = 0;
return meta->value;
}
const char *p = meta->value;
const char *e = p + meta->valuesize;
while (p < e) {
size_t l = strlen (p);
*out_size += l;
*out_size += separator_len;
p += l + 1;
}
if (*out_size > 0) {
(*out_size) -= separator_len; // don't write trailing separator
}
if (!(*out_size)) {
*needs_free = 0;
return "";
}
char *out = malloc (*out_size);
if (!out) {
*needs_free = 0;
return "";
}
char *pp = out;
p = meta->value;
e = p + meta->valuesize;
while (p < e) {
size_t l = strlen (p);
memcpy (pp, p, l);
pp += l;
if (p + l + 1 != e) {
memcpy (pp, separator, separator_len);
pp += separator_len;
}
p += l + 1;
}
*needs_free = 1;
return out;
}
#ifdef DDB_RECODE
static int
cp1251_to_utf8(const uint8_t *in, int inlen, uint8_t *out, int outlen) {
static const long utf[256] = {
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
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,
59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,
87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,
111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,1026,1027,8218,
1107,8222,8230,8224,8225,8364,8240,1033,8249,1034,1036,1035,1039,1106,8216,8217,
8220,8221,8226,8211,8212,8250,8482,1113,8250,1114,1116,1115,1119,160,1038,1118,1032,
164,1168,166,167,1025,169,1028,171,172,173,174,1031,176,177,1030,1110,1169,181,182,
183,1105,8470,1108,187,1112,1029,1109,1111,1040,1041,1042,1043,1044,1045,1046,1047,
1048,1049,1050,1051,1052,1053,1054,1055,1056,1057,1058,1059,1060,1061,1062,1063,
1064,1065,1066,1067,1068,1069,1070,1071,1072,1073,1074,1075,1076,1077,1078,1079,
1080,1081,1082,1083,1084,1085,1086,1087,1088,1089,1090,1091,1092,1093,1094,1095,
1096,1097,1098,1099,1100,1101,1102,1103
};
uint8_t *out_start = out;
uint8_t *end = out + outlen;
for(int i = 0; i < inlen && out < end - 4; i++) {
long c = utf[*in++];
if (c < 0x80) {
*out++ = c;
}
else if (c < 0x800) {
*out++ = (c >> 6) | 0xc0;
*out++ = (c & 0x3f) | 0x80;
}
else if( c < 0x10000 ) {
*out++ = (c >> 12) | 0xe0;
*out++ = ((c >> 6) & 0x3f) | 0x80;
*out++ = (c & 0x3f) | 0x80;
}
}
*out++ = 0;
return (int)(out - out_start);
}
int
junk_cp1252_to_utf8(const uint8_t *in, int inlen, uint8_t *out, int outlen) {
int len = 0;
while (inlen > 0 && outlen-len > 2) {
uint8_t c=*in;
switch (c) {
case 192 ... 255:
*out++ = 195;
*out++ = c - 64;
len += 2;
break;
case 160 ... 191:
*out++ = 0xc2;
*out++ = c;
len += 2;
break;
#define CONV2(x,y,z) case x:\
*out++ = y;\
*out++ = z;\
len += 2;\
break;
#define CONV3(x,y,z,w) case x:\
*out++ = y;\
*out++ = z;\
*out++ = w;\
len += 3;\
break;
CONV2(0x9f,0xc5,0xb8);
CONV2(0x9e,0xc5,0xbe);
CONV3(0x9d,0xef,0xbf,0xbd);
CONV3(0x80,0xe2,0x82,0xac);
CONV3(0x81,0xef,0xbf,0xbd);
CONV3(0x82,0xe2,0x80,0x9a);
CONV2(0x83,0xc6,0x92);
CONV3(0x84,0xe2,0x80,0x9e);
CONV3(0x85,0xe2,0x80,0xa6);
CONV3(0x86,0xe2,0x80,0xa0);
CONV3(0x87,0xe2,0x80,0xa1);
CONV2(0x88,0xcb,0x86);
CONV3(0x89,0xe2,0x80,0xb0);
CONV2(0x8a,0xc5,0xa0);
CONV3(0x8b,0xe2,0x80,0xb9);
CONV2(0x8c,0xc5,0x92);
CONV3(0x8d,0xef,0xbf,0xbd);
CONV2(0x8e,0xc5,0xbd);
CONV3(0x8f,0xef,0xbf,0xbd);
CONV3(0x90,0xef,0xbf,0xbd);
CONV3(0x91,0xe2,0x80,0x98);
CONV3(0x92,0xe2,0x80,0x99);
CONV3(0x93,0xe2,0x80,0x9c);
CONV3(0x94,0xe2,0x80,0x9d);
CONV3(0x95,0xe2,0x80,0xa2);
CONV3(0x96,0xe2,0x80,0x93);
CONV3(0x97,0xe2,0x80,0x94);
CONV2(0x98,0xcb,0x9c);
CONV3(0x99,0xe2,0x84,0xa2);
CONV2(0x9a,0xc5,0xa1);
CONV3(0x9b,0xe2,0x80,0xba);
CONV2(0x9c,0xc5,0x93);
#undef CONV2
#undef CONV3
default:
if (c >= 127) {
trace ("iso8859 char: %d\n", c);
}
*out++ = c;
len++;
break;
}
in++;
inlen--;
}
*out = 0;
return len;
}
int
junk_utf8_to_cp1252(const uint8_t *in, int inlen, uint8_t *out, int outlen) {
uint8_t *outptr = out;
const char *cp1252_charset[] = {"€", "", "‚", "ƒ", "„", "…", "†", "‡", "ˆ", "‰", "Š", "‹", "Œ", "", "Ž", "", "", "‘", "’", "“", "”", "•", "–", "—", "˜", "™", "š", "›", "œ", "", "ž", "Ÿ", " ", "¡", "¢", "£", "¤", "¥", "¦", "§", "¨", "©", "ª", "«", "¬", "", "®", "¯", "°", "±", "²", "³", "´", "µ", "¶", "·", "¸", "¹", "º", "»", "¼", "½", "¾", "¿", "À", "Á", "Â", "Ã", "Ä", "Å", "Æ", "Ç", "È", "É", "Ê", "Ë", "Ì", "Í", "Î", "Ï", "Ð", "Ñ", "Ò", "Ó", "Ô", "Õ", "Ö", "×", "Ø", "Ù", "Ú", "Û", "Ü", "Ý", "Þ", "ß", "à", "á", "â", "ã", "ä", "å", "æ", "ç", "è", "é", "ê", "ë", "ì", "í", "î", "ï", "ð", "ñ", "ò", "ó", "ô", "õ", "ö", "÷", "ø", "ù", "ú", "û", "ü", "ý", "þ", "ÿ", NULL};
while (inlen && outlen > 0) {
if (*in < 0x80) {
*out++ = *in++;
outlen--;
inlen--;
}
else {
int idx = 0;
u8_inc((char *)in, &idx);
int i;
for (i = 0; cp1252_charset[i]; i++) {
if (strlen (cp1252_charset[i]) == idx && !memcmp (in, cp1252_charset[i], idx)) {
*out++ = i + 0x80;
outlen--;
break;
}
}
if (!cp1252_charset[i]) {
return -1;
}
in += idx;
inlen -= idx;
}
}
*out = 0;
return (int)(out-outptr);
}
int
junk_utf8_to_ascii(const uint8_t *in, int inlen, uint8_t *out, int outlen) {
uint8_t *outptr = out;
while (inlen && outlen > 0) {
if (*in < 0x80) {
*out++ = *in++;
outlen--;
inlen--;
}
else {
int idx = 0;
u8_inc((char *)in, &idx);
in += idx;
inlen -= idx;
}
}
*out = 0;
return (int)(out-outptr);
}
ConversionResult
ConvertUTF16BEtoUTF8 (const UTF16** sourceStart, const UTF16* sourceEnd, UTF8** targetStart, UTF8* targetEnd, ConversionFlags flags) {
// swap to make it little endian
size_t sourceLESize = (size_t)(sourceEnd - *sourceStart) * sizeof (UTF16);
UTF16 sourceLE[sourceLESize];
UTF16 *pLE = sourceLE;
for (const UTF16 *p = *sourceStart; p != sourceEnd; p++) {
*pLE++ = extract_i16((const uint8_t *)p);
}
const UTF16 *leStart = sourceLE;
ConversionResult res = ConvertUTF16toUTF8(&leStart, pLE, targetStart, targetEnd, flags);
*sourceStart += pLE - sourceLE;
return res;
}
ConversionResult
ConvertUTF8toUTF16BE (const UTF8** sourceStart, const UTF8* sourceEnd, UTF16** targetStart, UTF16* targetEnd, ConversionFlags flags) {
UTF16 *output = *targetStart;
ConversionResult res = ConvertUTF8toUTF16(sourceStart, sourceEnd, targetStart, targetEnd, flags);
if (res == conversionOK) {
for (UTF16 *p = output; p != *targetStart; p++) {
*p = extract_i16((const uint8_t *)p);
}
}
return res;
}
int
ddb_iconv (const char *cs_out, const char *cs_in, char *out, int outlen, const char *in, int inlen) {
long len = -1;
*out = 0;
if (inlen==0) {
return 0;
}
if (!strcmp (cs_in, "UTF-16")) {
if ((uint8_t)in[0] == 0xfe && (uint8_t)in[1] == 0xff) {
cs_in = "UTF-16BE";
in += 2;
inlen -= 2;
}
else if ((uint8_t)in[0] == 0xff && (uint8_t)in[1] == 0xfe) {
cs_in = "UTF-16LE";
in += 2;
inlen -= 2;
}
else {
cs_in = "UTF-16LE";
}
}
// to utf8 branch
if (!strcasecmp (cs_out, UTF8_STR)) {
if (!strcasecmp (cs_in, UTF8_STR)) {
memcpy (out, in, inlen);
out[inlen] = 0;
int valid = u8_valid (out, inlen, NULL);
if (valid) {
len = inlen;
}
}
else if (!strcasecmp (cs_in, "cp1251")) {
len = cp1251_to_utf8 (in, inlen, out, outlen);
}
else if (!strcasecmp (cs_in, "iso8859-1") || !strcasecmp (cs_in, "cp1252")) {
len = junk_cp1252_to_utf8 (in, inlen, out, outlen);
}
else if (!strcasecmp (cs_in, "UTF-16LE") || !strcasecmp (cs_in, "UCS-2LE")) {
char *target = out;
ConversionResult result = ConvertUTF16toUTF8 ((const UTF16**)&in, (const UTF16*)(in + inlen), (UTF8**)&target, (UTF8*)(out + outlen), strictConversion);
if (result == conversionOK) {
*target = 0;
len = target - out;
}
}
else if (!strcasecmp (cs_in, "UTF-16BE") || !strcasecmp (cs_in, "UCS-2BE")) {
// convert to big endian
char temp[inlen];
for (int i = 0; i < inlen; i += 2) {
temp[i] = in[i+1];
temp[i+1] = in[i];
}
in = temp;
char *target = out;
ConversionResult result = ConvertUTF16toUTF8 ((const UTF16**)&in, (const UTF16*)(in + inlen), (UTF8**)&target, (UTF8*)(out + outlen), strictConversion);
if (result == conversionOK) {
*target = 0;
len = target - out;
}
}
else if (!strcasecmp (cs_in, "SHIFT-JIS")) {
int len = 0;
while (inlen > 0 && len < outlen) {
if (*in > 0) {
*out++ = *in++;
inlen--;
len++;
}
else if (inlen < 2) {
return -1;
}
else {
// find character in table
uint16_t c = (((uint8_t*)in)[0] << 8) | ((uint8_t*)in)[1];
int i;
for (i = 0; sj_to_unicode[i]; i += 2) {
if (c == sj_to_unicode[i]) {
break;
}
}
if (sj_to_unicode[i]) {
// slow conversion!
char unicode_val[2] = { (sj_to_unicode[i+1] & 0xff00) >> 8, sj_to_unicode[i+1] & 0xff };
char utf8_val[5];
char *src = unicode_val, *dst = utf8_val;
ConversionResult res = ConvertUTF16toUTF8 ((const UTF16**)&src, (const UTF16 *)(src+2), (UTF8**)&dst, dst+5, strictConversion);
if (res == conversionOK) {
if (src - utf8_val < outlen-len) {
memcpy (out, utf8_val, src - utf8_val);
out += src - utf8_val;
len += src - utf8_val;
inlen -= 2;
in += 2;
}
else {
return -1;
}
}
else {
return -1;
}
}
else {
return -1; // error
}
}
}
}
else {
fprintf (stderr, "invalid conversion request: %s -> %s\n", cs_in, cs_out);
}
}
else if (!strcasecmp (cs_in, UTF8_STR)) {
if (!strcasecmp (cs_out, "UTF-16LE") || !strcasecmp (cs_out, "UCS-2LE")) {
char *target = out;
ConversionResult result = ConvertUTF8toUTF16 ((const UTF8**)&in, (const UTF8*)(in + inlen), (UTF16**)&target, (UTF16*)(out + outlen), strictConversion);
if (result == conversionOK) {
*target = 0;
*(target+1) = 0;
len = target - out;
}
}
else if (!strcasecmp (cs_out, "UTF-16BE") || !strcasecmp (cs_out, "UCS-2BE")) {
char *target = out;
ConversionResult result = ConvertUTF8toUTF16BE ((const UTF8**)&in, (const UTF8*)(in + inlen), (UTF16**)&target, (UTF16*)(out + outlen), strictConversion);
if (result == conversionOK) {
*target = 0;
*(target+1) = 0;
len = target - out;
}
}
else if (!strcasecmp (cs_out, "cp1252") || !strcasecmp (cs_out, "iso8859-1")) {
int res = junk_utf8_to_cp1252((uint8_t *)in, inlen, (uint8_t *)out, outlen);
if (res >= 0) {
len = res;
}
}
else if (!strcasecmp (cs_out, "ascii")) {
int res = junk_utf8_to_ascii((uint8_t *)in, inlen, (uint8_t *)out, outlen);
if (res >= 0) {
len = res;
}
}
else {
fprintf (stderr, "invalid conversion request: %s -> %s\n", cs_in, cs_out);
}
}
else {
fprintf (stderr, "invalid conversion request: %s -> %s\n", cs_in, cs_out);
}
trace ("\033[0;31mddb_iconv: %s -> %s, in: %s, out: %s\033[37;0m\n", cs_in, cs_out, in, out);
return (int)len;
}
#endif
int
junk_iconv (const char *in, int inlen, char *out, int outlen, const char *cs_in, const char *cs_out) {
// NOTE: this function must support utf8->utf8 conversion, used for validation
#if HAVE_ICONV
iconv_t cd = iconv_open (cs_out, cs_in);
if (cd == (iconv_t)-1) {
return -1;
}
#if defined(__linux__) || defined(__OpenBSD__)
char *pin = (char*)in;
#else
const char *pin = in;
#endif
size_t inbytesleft = inlen;
size_t outbytesleft = outlen;
char *pout = out;
size_t res = iconv (cd, &pin, &inbytesleft, &pout, &outbytesleft);
int err = errno;
iconv_close (cd);
//trace ("iconv -f %s -t %s '%s': returned %d, inbytes %d/%d, outbytes %d/%d, errno=%d\n", cs_in, cs_out, in, (int)res, inlen, (int)inbytesleft, outlen, (int)outbytesleft, err);
if (res == -1) {
return -1;
}
out[pout-out] = 0;
//trace ("iconv out: %s (len=%d)\n", out, pout - out);
return pout - out;
#elif defined(HAVE_ICU)
int status = 0;
trace ("ICU convert from %s to %s input %s\n", cs_in, cs_out, in);
int32_t len = ucnv_convert (cs_out, cs_in, out, outlen, in, inlen, &status);
out[len] = 0;
trace ("ICU out: %s\n", out);
return len;
#else
int len = ddb_iconv (cs_out, cs_in, out, outlen, in, inlen);
return len;
#endif
}
#define ID3V1_GENRE_COUNT (sizeof(junk_genretbl) / sizeof (char *) - 1)
static const char *junk_genretbl[] = {
"Blues",
"Classic Rock",
"Country",
"Dance",
"Disco",
"Funk",
"Grunge",
"Hip-Hop",
"Jazz",
"Metal",
"New Age",
"Oldies",
"Other",
"Pop",
"R&B",
"Rap",
"Reggae",
"Rock",
"Techno",
"Industrial",
"Alternative",
"Ska",
"Death Metal",
"Pranks",
"Soundtrack",
"Euro-Techno",
"Ambient",
"Trip-Hop",
"Vocal",
"Jazz+Funk",
"Fusion",
"Trance",
"Classical",
"Instrumental",
"Acid",
"House",
"Game",
"Sound Clip",
"Gospel",
"Noise",
"AlternRock",
"Bass",
"Soul",
"Punk",
"Space",
"Meditative",
"Instrumental Pop",
"Instrumental Rock",
"Ethnic",
"Gothic",
"Darkwave",
"Techno-Industrial",
"Electronic",
"Pop-Folk",
"Eurodance",
"Dream",
"Southern Rock",
"Comedy",
"Cult",
"Gangsta",
"Top 40",
"Christian Rap",
"Pop/Funk",
"Jungle",
"Native American",
"Cabaret",
"New Wave",
"Psychedelic",
"Rave",
"Showtunes",
"Trailer",
"Lo-Fi",
"Tribal",
"Acid Punk",
"Acid Jazz",
"Polka",
"Retro",
"Musical",
"Rock & Roll",
"Hard Rock",
"Folk",
"Folk-Rock",
"National Folk",
"Swing",
"Fast Fusion",
"Bebob",
"Latin",
"Revival",
"Celtic",
"Bluegrass",
"Avantgarde",
"Gothic Rock",
"Progressive Rock",
"Psychedelic Rock",
"Symphonic Rock",
"Slow Rock",
"Big Band",
"Chorus",
"Easy Listening",
"Acoustic",
"Humour",
"Speech",
"Chanson",
"Opera",
"Chamber Music",
"Sonata",
"Symphony",
"Booty Bass",
"Primus",
"Porn Groove",
"Satire",
"Slow Jam",
"Club",
"Tango",
"Samba",
"Folklore",
"Ballad",
"Power Ballad",
"Rhythmic Soul",
"Freestyle",
"Duet",
"Punk Rock",
"Drum Solo",
"Acapella",
"Euro-House",
"Dance Hall",
"Goa",
"Drum & Bass",
"Club-House",
"Hardcore",
"Terror",
"Indie",
"BritPop",
"Negerpunk",
"Polsk Punk",
"Beat",
"Christian Gangsta",
"Heavy Metal",
"Black Metal",
"Crossover",
"Contemporary C",
"Christian Rock",
"Merengue",
"Salsa",
"Thrash Metal",
"Anime",
"JPop",
"SynthPop",
"Abstract",
"Art Rock",
"Baroque",
"Bhangra",
"Big Beat",
"Breakbeat",
"Chillout",
"Downtempo",
"Dub",
"EBM",
"Eclectic",
"Electro",
"Electroclash",
"Emo",
"Experimental",
"Garage",
"Global",
"IDM",
"Illbient",
"Industro-Goth",
"Jam Band",
"Krautrock",
"Leftfield",
"Lounge",
"Math Rock",
"New Romantic",
"Nu-Breakz",
"Post-Punk",
"Post-Rock",
"Psytrance",
"Shoegaze",
"Space Rock",
"Trop Rock",
"World Music",
"Neoclassical",
"Audiobook",
"Audio Theatre",
"Neue Deutsche Welle",
"Podcast",
"Indie Rock",
"G-Funk",
"Dubstep",
"Garage Rock",
"Psybient",
NULL
};
static int
can_be_russian (const signed char *str, int size) {
if (!enable_cp1251_detection) {
return 0;
}
int latin = 0;
int rus = 0;
int rus_in_row = 0;
int max_rus_row = 0;
int n = 0;
for (; n < size; str++, n++) {
if ((*str >= 'A' && *str <= 'Z')
|| (*str >= 'a' && *str <= 'z')) {
if (rus_in_row > max_rus_row) {
max_rus_row = rus_in_row;
}
rus_in_row = 0;
latin++;
}
else if (*str < 0) {
rus_in_row++;
rus++;
}
}
if (rus > latin/2 || (max_rus_row > 4)) {
return 1;
}
return 0;
}
static int
can_be_chinese (const uint8_t *str, int sz) {
if (!enable_cp936_detection) {
return 0;
}
size_t len = strlen (str);
for (int i = 0; i < sz; str++, i++) {
if (i < len-3
&& (*str >= 0x81 && *str <= 0xFE )
&& (*(str+1) >= 0x30 && *(str+1) <= 0x39)
&& (*(str+2) >= 0x81 && *(str+2) <= 0xFE)
&& (*(str+3) >= 0x30 && *(str+3) <= 0x39)) {
return 1;
}
if (i < len - 1
&& (*str >= 0x81 && *str <= 0xFE )
&& ((*(str+1) >= 0x40 && *(str+1) <= 0x7E)
|| (*(str+1) >= 0x80 && *(str+1) <= 0xFE))) {
return 1;
}
}
return 0;
}
static int
can_be_shift_jis (const unsigned char *str, int size) {
if (!size) {
return 0;
}
unsigned char out[size*4];
if (size < 2) {
return 0;
}
const unsigned char *p = str;
int s = size;
while (s >= 2) {
if ((((p[0] >= 0x81 && p[0] <= 0x84) || (p[0] >= 0x87 && p[0] <= 0x9f))
&& ((p[1] >= 0x40 && p[1] <= 0x9e) || (p[1] >= 0x9f && p[1] <= 0xfc)))
|| ((p[0] >= 0xe0 && p[0] <= 0xef)
&& ((p[1] >= 0x40 && p[1] <= 0x9e) || (p[1] >= 0x9f && p[1] <= 0xfc)))) {
break;
}
s--;
p++;
}
if (s >= 2) {
if (junk_iconv (str, size, out, (int)sizeof (out), "shift-jis", UTF8_STR) >= 0) {
return 1;
}
}
return 0;
}
static char *
convstr_id3v2 (const char *sb_charset, int version, uint8_t encoding, const uint8_t *str, int sz, int *out_size) {
const char *enc = NULL;
// detect encoding