Hi all,
EDIT: If it matters, it’s OSX 10.6.3 (32 bit). I built QT static from source with the macx-g++ platform and in release and opensource modes.
I wrote a command line program to add ID3 Tags to MP3s using the TabLib library and QT 4.8. It’s for my Firefox Plugin YoutubeMP3Podcaster. It’s sort of a crazy hack to get around a Firefox limitation. I pass the path to an MP3 in as a URL Encoded string and use QUrl to decode it and QString to turn it into a UTF8 String suitable for TabLib.
It works great on Windows and LInux, but for some reason QT wants librt.a (the POSIX realtime Library), and it’s not implemented on OSX, so trying to build with
g++ ./encMP3Tagger.cpp -o encMP3Tagger.exe -L/use/local/lib/ -I/usr/local/include/taglib -ltag -lPocoFoundation -lPocoUtil -lPocoXML -lPocoNet `llvm-config —libs core` `llvm-config —ldflags` -lQtCore -ldl -lrt -lz
Just gets me a nice big error about librt not being available.
I’m only using QString and QUrl though, so I can’t imagine why it needs the realtime clock functions. I’ve found a bunch of hacks where people replace the librt calls, but I’m trying to avoid hacking into the QT code and my C++ skills are a bit weak :P.
Does anyone know a painless solution to get my code to build on OSX?
Here’s the source
#define TAGLIB_STATIC
#include <iostream>
#include <string.h>
#include <fstream>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include "tlist.h"
#include "fileref.h"
#include "tfile.h"
#include "tag.h"
#include "id3v2tag.h"
#include "mpegfile.h"
#include <QtCore/QString>
#include <QtCore/QUrl>
using namespace std;
using namespace TagLib;
bool isArgument(const char *s)
{
return strlen(s) == 2 && s[0] == '-';
}
bool isFile(const char *s)
{
struct stat st;
#ifdef _WIN32
return ::stat(s, &st) == 0 && (st.st_mode & (S_IFREG));
#else
return ::stat(s, &st) == 0 && (st.st_mode & (S_IFREG | S_IFLNK));
#endif
}
void usage()
{
cout << endl;
cout << "Usage: tagwriter <fields> <files>" << endl;
cout << endl;
cout << "Where the valid fields are:" << endl;
cout << " -t <title>" << endl;
cout << " -a <artist>" << endl;
cout << " -A <album>" << endl;
cout << " -c <comment>" << endl;
cout << " -g <genre>" << endl;
cout << " -y <year>" << endl;
cout << " -T <track>" << endl;
cout << endl;
exit(1);
}
int main(int argc, char *argv[])
{
TagLib::List<TagLib::FileRef> fileList;
QString filepath( argv[argc - 1] );
QString url = QUrl::fromPercentEncoding( filepath.toUtf8() );
TagLib::FileRef f( url.toUtf8().constData() );
if(!f.isNull() && f.tag())
fileList.append(f);
argc--;
if(fileList.isEmpty())
usage();
for(int i = 1; i < argc - 1; i += 2) {
if(isArgument(argv[i]) && i + 1 < argc && !isArgument(argv[i + 1])) {
char field = argv[i][1];
QString qValue = QUrl::fromPercentEncoding( argv[i + 1] );
TagLib::String value ( qValue.toUtf8().constData(), TagLib::String::UTF8);
TagLib::List<TagLib::FileRef>::Iterator it;
for(it = fileList.begin(); it != fileList.end(); ++it) {
TagLib::Tag *t = (*it).tag();
switch (field) {
case 't':
t->setTitle(value);
break;
case 'a':
t->setArtist(value);
break;
case 'A':
t->setAlbum(value);
break;
case 'c':
t->setComment(value);
break;
case 'g':
t->setGenre(value);
break;
case 'y':
t->setYear(value.toInt());
break;
case 'T':
t->setTrack(value.toInt());
break;
default:
usage();
break;
}//END SWITCH STATEMENT*/
}//END FOR LOOP
}else
usage();
}//end if-else
TagLib::List<TagLib::FileRef>::Iterator it;
for(it = fileList.begin(); it != fileList.end(); ++it){
//cout << "Saving a Tag" << endl;
TagLib::MPEG::File *mpegFile = (TagLib::MPEG::File*)(*it).file();
mpegFile->save(MPEG::File::AllTags, true, 3);
//(*it).file()->save();
}
return 0;
}//END MAIN
↧