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/***************************************************************************
* Copyright (C) 2008-2021 by Andrzej Rybczak *
* andrzej@rybczak.net *
* *
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <cstring>
#include <iostream>
#include <fileref.h>
#include <flacfile.h>
#include <mpegfile.h>
#include <vorbisfile.h>
#include <textidentificationframe.h>
#include <id3v2tag.h>
#include <xiphcomment.h>
enum class CopyResult { Success, NoArtist, AlbumArtistAlreadyInPlace };
bool is_framelist_empty(const TagLib::ID3v2::FrameList &list)
{
for (auto it = list.begin(); it != list.end(); ++it)
if ((*it)->toString() != TagLib::String())
return false;
return true;
}
CopyResult copy_album_artist(TagLib::ID3v2::Tag *tag)
{
typedef TagLib::ID3v2::TextIdentificationFrame TextFrame;
TagLib::ByteVector album_artist = "TPE2";
if (!is_framelist_empty(tag->frameList(album_artist)))
return CopyResult::AlbumArtistAlreadyInPlace;
auto artists = tag->frameList("TPE1");
if (artists.isEmpty())
return CopyResult::NoArtist;
for (auto it = artists.begin(); it != artists.end(); ++it)
{
// this cast should always succeed.
auto &textIt = dynamic_cast<TextFrame &>(**it);
auto frame = new TextFrame(album_artist, TagLib::String::UTF8);
frame->setText(textIt.fieldList());
tag->addFrame(frame);
}
return CopyResult::Success;
}
CopyResult copy_album_artist(TagLib::Ogg::XiphComment *tag)
{
if (tag->contains("ALBUM ARTIST") || tag->contains("ALBUMARTIST"))
return CopyResult::AlbumArtistAlreadyInPlace;
auto artists = tag->fieldListMap()["ARTIST"];
if (artists.isEmpty())
return CopyResult::NoArtist;
for (auto it = artists.begin(); it != artists.end(); ++it)
tag->addField("ALBUMARTIST", *it, false);
return CopyResult::Success;
}
void convert(int n, char **files, bool dry_run)
{
if (n == 0)
{
std::cout << "No files to convert, exiting.\n";
return;
}
if (dry_run)
std::cout << "Dry run mode enabled, pretending to modify files.\n";
for (int i = 0; i < n; ++i)
{
std::cout << "Modifying " << files[i] << "... ";
TagLib::FileRef f(files[i]);
if (!f.isNull())
{
CopyResult result;
if (auto mp3_f = dynamic_cast<TagLib::MPEG::File *>(f.file()))
{
result = copy_album_artist(mp3_f->ID3v2Tag(true));
}
else if (auto ogg_f = dynamic_cast<TagLib::Ogg::Vorbis::File *>(f.file()))
{
result = copy_album_artist(ogg_f->tag());
}
else if (auto flac_f = dynamic_cast<TagLib::FLAC::File *>(f.file()))
{
result = copy_album_artist(flac_f->xiphComment(true));
}
else
{
std::cout << "Not mp3/ogg/flac file, skipping.\n";
continue;
}
switch (result)
{
case CopyResult::Success:
if (!dry_run)
f.save();
std::cout << "Done.\n";
break;
case CopyResult::NoArtist:
std::cout << "Artist not found, skipping.\n";
break;
case CopyResult::AlbumArtistAlreadyInPlace:
std::cout << "AlbumArtist is already there, skipping.\n";
break;
}
}
else
std::cout << "Could not open file, skipping.\n";
}
}
int main(int argc, char **argv)
{
if (argc < 2)
{
std::cout << "This little script copies Artist tag (if present) to\n";
std::cout << "AlbumArtist (if not present) for given mp3/ogg/flac files.\n";
std::cout << "\n";
std::cout << "Usage: " << argv[0] << " [--dry-run] files\n";
std::cout << "\n";
std::cout << "Note: to run it recursively for all your files, you can use:\n";
std::cout << "$ find DIRECTORY \\( -name \"*.flac\" -o -name \"*.mp3\" -o -name \"*.ogg\" \\) -exec ./artist_to_albumartist [--dry-run] {} \\;\n";
}
else
{
bool dry_run = !strcmp(argv[1], "--dry-run");
convert(argc-1-dry_run, &argv[1+dry_run], dry_run);
}
return 0;
}
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