* Use internal music metadata functions intead of taglib.
1) Taglib does not support MP4 or WMA/ASF without hacking it in there. 2) Taglib is C++, so it's nice to remove that dependency. * Use embedded album art where available.
This commit is contained in:
Justin Maggard
262
tagutils/tagutils-misc.c
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262
tagutils/tagutils-misc.c
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//=========================================================================
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// FILENAME : tagutils-misc.c
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// DESCRIPTION : Misc routines for supporting tagutils
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//=========================================================================
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// Copyright (c) 2008- NETGEAR, Inc. All Rights Reserved.
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//=========================================================================
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/* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**************************************************************************
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* Language
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**************************************************************************/
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#define MAX_ICONV_BUF 1024
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typedef enum {
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ICONV_OK,
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ICONV_TRYNEXT,
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ICONV_FATAL
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} iconv_result;
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static iconv_result
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do_iconv(const char* to_ces, const char* from_ces,
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char *inbuf, size_t inbytesleft,
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char *outbuf_orig, size_t outbytesleft_orig)
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{
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size_t rc;
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iconv_result ret = ICONV_OK;
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size_t outbytesleft = outbytesleft_orig - 1;
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char* outbuf = outbuf_orig;
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iconv_t cd = iconv_open(to_ces, from_ces);
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if(cd == (iconv_t)-1)
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{
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return ICONV_FATAL;
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}
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rc = iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
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if(rc == (size_t)-1)
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{
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if(errno == E2BIG)
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{
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ret = ICONV_FATAL;
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}
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else
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{
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ret = ICONV_TRYNEXT;
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memset(outbuf_orig, '\0', outbytesleft_orig);
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}
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}
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iconv_close(cd);
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return ret;
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}
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#define N_LANG_ALT 8
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struct {
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char *lang;
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char *cpnames[N_LANG_ALT];
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} iconv_map[] = {
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{ "JA", { "ISO-8859-1", "CP932", "ISO8859-1", "CP950", "CP936", 0 } },
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{ "ZH_CN", { "ISO-8859-1", "CP936", "CP950", "CP932", 0 } },
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{ "ZH_TW", { "ISO-8859-1", "CP950", "CP936", "CP932", 0 } },
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{ 0, { 0 } }
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};
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static int lang_index = -1;
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static int
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_lang2cp(char *lang)
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{
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int cp;
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if(!lang || lang[0] == '\0')
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return -1;
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for(cp = 0; iconv_map[cp].lang; cp++)
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{
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if(!strcasecmp(iconv_map[cp].lang, lang))
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return cp;
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}
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return -1;
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}
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static unsigned char*
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_get_utf8_text(const id3_ucs4_t* native_text)
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{
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unsigned char *utf8_text = NULL;
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char *in, *in8, *iconv_buf;
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iconv_result rc;
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int i, n;
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in = (char*)id3_ucs4_latin1duplicate(native_text);
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if(!in)
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{
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goto out;
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}
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in8 = (char*)id3_ucs4_utf8duplicate(native_text);
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if(!in8)
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{
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free(in);
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goto out;
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}
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iconv_buf = (char*)calloc(MAX_ICONV_BUF, sizeof(char));
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if(!iconv_buf)
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{
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free(in); free(in8);
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goto out;
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}
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i = lang_index;
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// (1) try utf8 -> default
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rc = do_iconv(iconv_map[i].cpnames[0], "UTF-8", in8, strlen(in8), iconv_buf, MAX_ICONV_BUF);
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if(rc == ICONV_OK)
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{
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utf8_text = (unsigned char*)in8;
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free(iconv_buf);
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}
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else if(rc == ICONV_TRYNEXT)
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{
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// (2) try default -> utf8
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rc = do_iconv("UTF-8", iconv_map[i].cpnames[0], in, strlen(in), iconv_buf, MAX_ICONV_BUF);
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if(rc == ICONV_OK)
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{
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utf8_text = (unsigned char*)iconv_buf;
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}
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else if(rc == ICONV_TRYNEXT)
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{
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// (3) try other encodes
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for(n = 1; n < N_LANG_ALT && iconv_map[i].cpnames[n]; n++)
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{
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rc = do_iconv("UTF-8", iconv_map[i].cpnames[n], in, strlen(in), iconv_buf, MAX_ICONV_BUF);
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if(rc == ICONV_OK)
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{
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utf8_text = (unsigned char*)iconv_buf;
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break;
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}
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}
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if(!utf8_text)
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{
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// cannot iconv
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utf8_text = (unsigned char*)id3_ucs4_utf8duplicate(native_text);
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free(iconv_buf);
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}
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}
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free(in8);
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}
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free(in);
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out:
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if(!utf8_text)
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{
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utf8_text = (unsigned char*)strdup("UNKNOWN");
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}
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return utf8_text;
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}
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static void
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vc_scan(struct song_metadata *psong, const char *comment, const size_t length)
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{
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char strbuf[1024];
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if(length > (sizeof(strbuf) - 1))
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{
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DPRINTF(E_ERROR, L_SCANNER, "Vorbis Comment too long\n");
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return;
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}
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strncpy(strbuf, comment, length);
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strbuf[length] = '\0';
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// ALBUM, ARTIST, PUBLISHER, COPYRIGHT, DISCNUMBER, ISRC, EAN/UPN, LABEL, LABELNO,
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// LICENSE, OPUS, SOURCEMEDIA, TITLE, TRACKNUMBER, VERSION, ENCODED-BY, ENCODING,
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// -- foollowing tags are muliples
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// COMPOSER, ARRANGER, LYRICIST, AUTHOR, CONDUCTOR, PERFORMER, ENSEMBLE, PART
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// PARTNUMBER, GENRE, DATE, LOCATION, COMMENT
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if(!strncasecmp(strbuf, "ALBUM=", 6))
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{
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psong->album = strdup(strbuf + 6);
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}
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else if(!strncasecmp(strbuf, "ARTIST=", 7))
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{
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psong->contributor[ROLE_ARTIST] = strdup(strbuf + 7);
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}
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else if(!strncasecmp(strbuf, "ARTISTSORT=", 11))
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{
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psong->contributor_sort[ROLE_ARTIST] = strdup(strbuf + 11);
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}
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else if(!strncasecmp(strbuf, "TITLE=", 6))
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{
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psong->title = strdup(strbuf + 6);
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}
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else if(!strncasecmp(strbuf, "TRACKNUMBER=", 12))
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{
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psong->track = atoi(strbuf + 12);
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}
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else if(!strncasecmp(strbuf, "DISCNUMBER=", 11))
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{
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psong->disc = atoi(strbuf + 11);
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}
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else if(!strncasecmp(strbuf, "GENRE=", 6))
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{
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psong->genre = strdup(strbuf + 6);
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}
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else if(!strncasecmp(strbuf, "DATE=", 5))
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{
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if(length >= (5 + 10) &&
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isdigit(strbuf[5 + 0]) && isdigit(strbuf[5 + 1]) && ispunct(strbuf[5 + 2]) &&
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isdigit(strbuf[5 + 3]) && isdigit(strbuf[5 + 4]) && ispunct(strbuf[5 + 5]) &&
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isdigit(strbuf[5 + 6]) && isdigit(strbuf[5 + 7]) && isdigit(strbuf[5 + 8]) && isdigit(strbuf[5 + 9]))
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{
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// nn-nn-yyyy
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strbuf[5 + 10] = '\0';
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psong->year = atoi(strbuf + 5 + 6);
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}
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else
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{
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// year first. year is at most 4 digit.
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strbuf[5 + 4] = '\0';
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psong->year = atoi(strbuf + 5);
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}
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}
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else if(!strncasecmp(strbuf, "COMMENT=", 8))
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{
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psong->comment = strdup(strbuf + 8);
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}
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else if(!strncasecmp(strbuf, "MUSICBRAINZ_ALBUMID=", 20))
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{
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psong->musicbrainz_albumid = strdup(strbuf + 20);
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}
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else if(!strncasecmp(strbuf, "MUSICBRAINZ_TRACKID=", 20))
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{
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psong->musicbrainz_trackid = strdup(strbuf + 20);
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}
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else if(!strncasecmp(strbuf, "MUSICBRAINZ_TRACKID=", 20))
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{
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psong->musicbrainz_trackid = strdup(strbuf + 20);
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}
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else if(!strncasecmp(strbuf, "MUSICBRAINZ_ARTISTID=", 21))
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{
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psong->musicbrainz_artistid = strdup(strbuf + 21);
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}
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else if(!strncasecmp(strbuf, "MUSICBRAINZ_ALBUMARTISTID=", 26))
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{
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psong->musicbrainz_albumartistid = strdup(strbuf + 26);
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}
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}
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