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/*
IMMS: Intelligent Multimedia Management System
Copyright (C) 2001-2009 Michael Grigoriev
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "songinfo.h"
#include "strmanip.h"
#include <stdio.h>
#ifdef WITH_ID3LIB
# include <id3/tag.h>
class Mp3Info : public InfoSlave
{
public:
Mp3Info(const string &filename)
{
id3tag.Clear();
id3tag.Link(filename.c_str());
}
virtual string get_artist()
{ return get_text_frame(ID3FID_LEADARTIST); }
virtual string get_title()
{ return get_text_frame(ID3FID_TITLE); }
virtual string get_album()
{ return get_text_frame(ID3FID_ALBUM); }
virtual time_t get_length() { return 0; }
protected:
string get_text_frame(ID3_FrameID id);
ID3_Tag id3tag;
};
string Mp3Info::get_text_frame(ID3_FrameID id)
{
static char buffer[1024];
ID3_Frame *myFrame = id3tag.Find(id);
if (myFrame)
{
myFrame->Field(ID3FN_TEXT).Get(buffer, 1024);
return buffer;
}
return "";
}
#endif
#ifdef WITH_VORBIS
# include <vorbis/vorbisfile.h>
# include <vorbis/codec.h>
class OggInfo : public InfoSlave
{
public:
OggInfo(const string &filename);
virtual string get_artist()
{ return get_comment("artist"); }
virtual string get_title()
{ return get_comment("title"); }
virtual string get_album()
{ return get_comment("album"); }
virtual time_t get_length() { return 0; }
~OggInfo();
private:
string get_comment(const string &id);
OggVorbis_File vf;
vorbis_comment *comment;
};
// OggInfo
OggInfo::OggInfo(const string &filename)
{
comment = 0;
FILE *fh = fopen(filename.c_str(), "r");
if (!fh)
return;
if (ov_open(fh, &vf, NULL, 0))
return;
comment = ov_comment(&vf, -1);
}
OggInfo::~OggInfo()
{
vorbis_comment_clear(comment);
ov_clear(&vf);
}
string OggInfo::get_comment(const string &id)
{
// Why exactly does vorbis_comment_query take a non-const char* ??
char *content = 0, *tag = const_cast<char*>(id.c_str());
return (comment &&
(content = vorbis_comment_query(comment, tag, 0))) ? content : "";
}
#endif
#ifdef WITH_TAGLIB
#include <fileref.h>
#include <tag.h>
using namespace TagLib;
class TagInfo : public InfoSlave
{
public:
TagInfo(const string &filename)
: fileref(filename.c_str(), false) {}
virtual string get_artist()
{
return !fileref.isNull() && fileref.tag() ?
fileref.tag()->artist().toCString() : "";
}
virtual string get_title()
{
return !fileref.isNull() && fileref.tag() ?
fileref.tag()->title().toCString() : "";
}
virtual string get_album()
{
return !fileref.isNull() && fileref.tag() ?
fileref.tag()->album().toCString() : "";
}
virtual time_t get_length()
{
return !fileref.isNull() && fileref.audioProperties()
? fileref.audioProperties()->length() : 0;
}
virtual int get_track_num()
{
return !fileref.isNull() && fileref.tag() ?
fileref.tag()->track() : 0;
}
private:
FileRef fileref;
};
#endif
// SongInfo
void SongInfo::link(const string &_filename)
{
if (filename == _filename)
return;
filename = _filename;
delete myslave;
myslave = 0;
if (filename.length() > 3)
{
string ext = string_tolower(path_get_extension(filename));
if (false) {}
#ifdef WITH_TAGLIB
else if (1)
myslave = new TagInfo(filename);
#endif
#ifdef WITH_ID3LIB
else if (ext == "mp3")
myslave = new Mp3Info(filename);
#endif
#ifdef WITH_VORBIS
else if (ext == "ogg")
myslave = new OggInfo(filename);
#endif
}
if (!myslave)
myslave = new InfoSlave();
}
string SongInfo::get_artist()
{ return trim(myslave->get_artist()); }
string SongInfo::get_title()
{ return trim(myslave->get_title()); }
string SongInfo::get_album()
{ return trim(myslave->get_album()); }
time_t SongInfo::get_length()
{ return myslave->get_length(); }
int SongInfo::get_track_num()
{ return myslave->get_track_num(); }
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