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junklib.c
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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) 2009-2013 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 waker@users.sourceforge.net
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "junklib.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_ICONV
#define LIBICONV_PLUG
#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 1024
#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",
"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,
"LANGUAGES", "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,
"MOOD", NULL, "TMOO", NULL, NULL,
"PRODUCED_NOTICE", NULL, "TPRO", NULL, NULL,
"musicbrainz_trackid", NULL, NULL, NULL, NULL,
NULL
};
static const char *txx_mapping[] = {
"replaygain_album_gain", NULL,
"replaygain_album_peak", NULL,
"replaygain_track_gain", NULL,
"replaygain_track_peak", NULL,
NULL
};
static uint32_t
extract_i32 (const uint8_t *buf)
{
uint32_t x;
// big endian extract
x = buf[0];
x <<= 8;
x |= buf[1];
x <<= 8;
x |= buf[2];
x <<= 8;
x |= buf[3];
return x;
}
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;
}
static inline float
extract_f32 (unsigned char *buf) {
float f;
uint32_t *x = (uint32_t *)&f;
*x = buf[0];
*x <<= 8;
*x |= buf[1];
*x <<= 8;
*x |= buf[2];
*x <<= 8;
*x |= buf[3];
return f;
}
#ifdef DDB_RECODE
static int
cp1251_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;
if (c>=192 && c<=239) {
*out++ = 208;
*out++ = c - 48;
len += 2;
}
else if (c>239) {
*out++ = 209;
*out++ = c - 112;
len += 2;
}
else if (c==184) {
*out++ = 0xd1;
*out++ = 0x91;
len += 2;
}
else if (c==168) {
*out++ = 208;
*out++ = 129;
len += 2;
}
else {
*out++ = c;
len++;
}
in++;
inlen--;
}
*out = 0;
return len;
}
static int
iso8859_1_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 ddb_iconv (const char *cs_out, const char *cs_in, char *out, int outlen, const char *in, int inlen) {
int len = -1;
*out = 0;
if (inlen==0) {
return 0;
}
if (!strcmp (cs_in, "UTF-16")) {
if (in[0] == 0xfe && in[1] == 0xff) {
cs_in = "UTF-16BE";
}
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")) {
len = iso8859_1_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")) {
assert (0);
// 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];
}
char *target = out;
char *src = temp;
ConversionResult result = ConvertUTF16toUTF8 ((const UTF16**)&src, (const UTF16*)(temp + 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")) {
assert (0);
char temp[outlen];
char *target = temp;
const char *src = in;
ConversionResult result = ConvertUTF16toUTF8 ((const UTF16**)&src, (const UTF16*)(src + inlen), (UTF8**)&target, (UTF8*)(target + outlen), strictConversion);
if (result == conversionOK) {
len = target - temp;
// convert to big endian
for (int i = 0; i < len; i += 2) {
out[i] = temp[i+1];
out[i+1] = temp[i];
}
}
}
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 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;
}
#ifdef __linux__
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
}
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",
"Psychadelic",
"Rave",
"Showtunes",
"Trailer",
"Lo-Fi",
"Tribal",
"Acid Punk",
"Acid Jazz",
"Polka",
"Retro",
"Musical",
"Rock & Roll",
"Hard Rock",
"Folk",
"Folk-Rock",
"National Folk",
"Swing",
"Fast Fusion",
"Bebob",
"Latin",
"Revival",
"Celtic",
"Bluegrass",
"Avantgarde",
"Gothic Rock",
"Progressive Rock",
"Psychedelic Rock",
"Symphonic Rock",
"Slow Rock",
"Big Band",
"Chorus",
"Easy Listening",
"Acoustic",
"Humour",
"Speech",
"Chanson",
"Opera",
"Chamber Music",
"Sonata",
"Symphony",
"Booty Bass",
"Primus",
"Porn Groove",
"Satire",
"Slow Jam",
"Club",
"Tango",
"Samba",
"Folklore",
"Ballad",
"Power Ballad",
"Rhythmic Soul",
"Freestyle",
"Duet",
"Punk Rock",
"Drum Solo",
"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",
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;
}
int 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) {
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, sizeof (out), "shift-jis", UTF8_STR) >= 0) {
return 1;
}
}
return 0;
}
static char *
convstr_id3v2 (int version, uint8_t encoding, const unsigned char* str, int sz) {
char out[2048] = "";
const char *enc = NULL;
// detect encoding
if (version == 4 && encoding == 2) {
enc = "UTF-16BE";
}
else if (version == 4 && encoding == 3) {
enc = UTF8_STR;
}
else if (encoding == 0) {
if (can_be_chinese (str, sz)) {
// hack to add cp936 support
enc = "cp936";
}
else if (can_be_russian (str, sz)) {
// hack to add limited cp1251 recoding support
enc = "cp1251";
}
else {
enc = "iso8859-1";
}
}
else if (encoding != 1 && !(version == 4 && encoding == 3)){
return NULL; // invalid encoding
}
if (encoding == 1) { // detect kind of unicode used
if (sz < 2) {
return NULL;
}
if (version < 4) {
if (str[0] == 0xff && str[1] == 0xfe) {
enc = "UCS-2LE";
str += 2;
sz -= 2;
}
else if (str[1] == 0xff && str[0] == 0xfe) {
enc = "UCS-2BE";
str += 2;
sz -= 2;
}
else {
trace ("invalid ucs-2 signature %x %x\n", (int)str[0], (int)str[1]);
enc = "UCS-2LE";
// NOTE: this is an assumption, might break in the future.
}
}
else {
enc = "UTF-16";
}
}
trace ("encoding: %s\n", enc);
int converted_sz = 0;
if ((converted_sz = junk_iconv (str, sz, out, sizeof (out), enc, UTF8_STR)) < 0) {
return NULL;
}
// trace ("%s -> %s\n", str, out);
int n;
for (n = 0; n < converted_sz; n++) {
if (out[n] == 0 && n != converted_sz-1) {
out[n] = '\n';
}
}
// trim trailing linebreaks
for (n = converted_sz-1; n >= 0; n--) {
if ((uint8_t)out[n] <= 32) {
out[n] = 0;
}
else {
break;
}
}
return strdup (out);
}
static const char *
convstr_id3v1 (const char* str, int sz, const char *charset) {
if (!charset) {
return str;
}
static char out[2048];
int i;
for (i = 0; i < sz; i++) {
if (str[i] != ' ') {
break;
}
}
if (i == sz) {
out[0] = 0;
return out;
}
int len = junk_iconv (str, sz, out, sizeof (out), charset, UTF8_STR);
if (len >= 0) {
return out;
}
return NULL;
}
static void
str_trim_right (uint8_t *str, int len) {
uint8_t *p = str + len - 1;
while (p >= str && *p <= 0x20) {
p--;
}
p++;
*p = 0;
}
int
junk_id3v1_read_int (playItem_t *it, char *buffer, const char **charset) {
if (!buffer) {
return -1;
}
if (it) {
if (memcmp (buffer, "TAG", 3)) {
return -1; // no tag
}
const char *cs = NULL;
charset = &cs;
int res = junk_id3v1_read_int (NULL, buffer, charset);
if (res) {
return res;
}
}
if (!charset) {
return -1;
}
char title[31];
char artist[31];
char album[31];
char year[5];
char comment[31];
uint8_t genreid;
uint8_t tracknum;
const char *genre = NULL;
memset (title, 0, 31);
memset (artist, 0, 31);
memset (album, 0, 31);
memset (year, 0, 5);
memset (comment, 0, 31);
memcpy (title, &buffer[3], 30);
str_trim_right (title, 30);
memcpy (artist, &buffer[3+30], 30);
str_trim_right (artist, 30);
memcpy (album, &buffer[3+60], 30);
str_trim_right (album, 30);
memcpy (year, &buffer[3+90], 4);
str_trim_right (year, 4);
memcpy (comment, &buffer[3+94], 30);
str_trim_right (comment, 30);
genreid = buffer[3+124];
tracknum = 0;
if (it) {
if (comment[28] == 0 && comment[29] != 0) {
tracknum = comment[29];
}
// 255 = "None",
// "CR" = "Cover" (id3v2)
// "RX" = "Remix" (id3v2)
if (genreid == 0xff) {
//genre = "None";
}
else if (genreid <= 147) {
genre = junk_genretbl[genreid];
}
}
// add meta
// trace ("%s - %s - %s - %s - %s - %s\n", title, artist, album, year, comment, genre);
if (!it) {
char buf[129];
char *p = buf;
strcpy (p, title);
p += strlen (title);
strcpy (p, artist);
p += strlen (artist);
strcpy (p, album);
p += strlen (album);
strcpy (p, year);
p += strlen (year);
strcpy (p, comment);
*charset = junk_detect_charset (buf);
return 0;
}
if (*title) {
pl_add_meta (it, "title", convstr_id3v1 (title, strlen (title), *charset));
}
if (*artist) {
pl_add_meta (it, "artist", convstr_id3v1 (artist, strlen (artist), *charset));
}
if (*album) {
pl_add_meta (it, "album", convstr_id3v1 (album, strlen (album), *charset));
}
if (*year) {
pl_add_meta (it, "year", year);
}
if (*comment) {
pl_add_meta (it, "comment", convstr_id3v1 (comment, strlen (comment), *charset));
}
if (genre && *genre) {
pl_add_meta (it, "genre", convstr_id3v1 (genre, strlen (genre), *charset));
}
if (tracknum != 0) {
char s[4];
snprintf (s, 4, "%d", tracknum);
pl_add_meta (it, "track", s);
}
uint32_t f = pl_get_item_flags (it);
f |= DDB_TAG_ID3V1;
pl_set_item_flags (it, f);
return 0;
}
// should read both id3v1 and id3v1.1
int
junk_id3v1_read (playItem_t *it, DB_FILE *fp) {
uint8_t id3[128];
if (deadbeef->fseek (fp, -128, SEEK_END) == -1) {
return -1;
}
if (deadbeef->fread (id3, 1, 128, fp) != 128) {
return -1;
}