Embeds cover art in music files (MP3, M4A/AAC, Ogg/Vorbis)

setcover.cpp

/*
Command-line application for embedding JPEG cover art in MP3, MP4 and OGG audio files.

Based on taglib-1.7 (debian libtag1-dev)
and libb64 (http://libb64.sourceforge.net/) needed for OGG Vorbis embedded cover art

g++ -I/usr/local/include/taglib -L/usr/local/lib -ltag -lb64 setcover.cpp -o setcover
g++ -I/opt/homebrew/include/taglib -L/opt/homebrew/include/b64 -ltag -lb64 setcover.cpp -o setcover
*/

/* Copyright (C) 2004 Scott Wheeler <[email protected]> ImageFile and MP3 example
 * Copyright (C) 2011,2021 Guy McArthur <[email protected]> MP4 and OGG examples
 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#include <mpegfile.h>
#include <attachedpictureframe.h>
#include <id3v2tag.h>
#include <mp4file.h>
#include <mp4tag.h>
#include <mp4coverart.h>
#include <vorbisfile.h>
#include <xiphcomment.h>
#include <flacpicture.h>

#ifndef BUFFERSIZE
#define BUFFERSIZE 8192
#endif

#include <encode.h>

#include <iostream>
#include <sstream>

class ImageFile : public TagLib::File
{
public:
    ImageFile(const char *file) : TagLib::File(file)
    {

    }
    
    TagLib::ByteVector data()
    {
        return readBlock(length());
    }


private:
    virtual TagLib::Tag *tag() const { return 0; }
    virtual TagLib::AudioProperties *audioProperties() const { return 0; }
    virtual bool save() { return false; }
};

int main(int argc, char *argv[])
{
    if (argc != 3) 
    {
        std::cout << "Usage: setcover <mp3|m4a|ogg> cover.jpg" << std::endl;
        return 1;
    }

    TagLib::String fileName = argv[1];
    TagLib::String fileType = fileName.substr(fileName.size() - 3).upper();
    
    ImageFile imageFile(argv[2]);
    TagLib::ByteVector imageData = imageFile.data();
    
    if (fileType == "M4A")
    {
      // read the image file
      TagLib::MP4::CoverArt coverArt((TagLib::MP4::CoverArt::Format) 0x0D, imageData);
      
      // read the mp4 file
      TagLib::MP4::File audioFile(argv[1]);
      
      // get the tag ptr
      TagLib::MP4::Tag *tag = audioFile.tag();
      
      // get the items map
      TagLib::MP4::ItemListMap itemsListMap = tag->itemListMap();
      
      // create cover art list
      TagLib::MP4::CoverArtList coverArtList;
      
      // append instance
      coverArtList.append(coverArt);
      
      // convert to item
      TagLib::MP4::Item coverItem(coverArtList);
      
      // add item to map
      itemsListMap.insert("covr", coverItem);
      
      tag->save();
    }
    else if (fileType == "MP3")
    {
      TagLib::MPEG::File audioFile(argv[1]);

      TagLib::ID3v2::Tag *tag = audioFile.ID3v2Tag(true);
      TagLib::ID3v2::AttachedPictureFrame *frame = new TagLib::ID3v2::AttachedPictureFrame;

      frame->setMimeType("image/jpeg");
      frame->setPicture(imageData);

      tag->addFrame(frame);
      audioFile.save();      
    }
    else if (fileType == "OGG")
    {
      TagLib::Ogg::Vorbis::File audioFile(argv[1]);
      TagLib::Ogg::XiphComment *tag = audioFile.tag();
      
      /*
      PROPOSED http://wiki.xiph.org/VorbisComment#METADATA_BLOCK_PICTURE
      */
      TagLib::FLAC::Picture* picture = new TagLib::FLAC::Picture();
      picture->setData(imageData);
      picture->setType((TagLib::FLAC::Picture::Type)  0x03); // FrontCover
      picture->setMimeType("image/jpeg");
      picture->setDescription("Front Cover");
      
      TagLib::ByteVector block = picture->render();
      base64::encoder b64enc;
      std::stringstream in, out;

      in.read(block.data(), block.size());
      b64enc.encode(in, out);
      out.write(block.data(), out.tellp());

      tag->addField("METADATA_BLOCK_PICTURE", block, true);
      
      /*
      UNOFFICIAL DEPRECATED http://wiki.xiph.org/VorbisComment#Unofficial_COVERART_field_.28deprecated.29
      */      
      tag->addField("COVERART",  block, true);
      
      audioFile.save();
    }
    else
    {
       std::cout << fileType << " is unsupported." << std::endl;
    }
}

Okay, got it. I had to install base64encoding from http://code.google.com/p/base64encoding/. But now i have all undefined references for TagLib, which I installed
g++ -g -I. -I/usr/local/include/taglib -L/usr/local/lib -lz -ltag -lssl -lcrypto setcover.cpp -o setcover base64.o
/tmp/cc1UOJCy.o: In function main':
/home/ivan/Applications/cover_art/setcover.cpp:80: undefined reference to TagLib::String::String(char const*, TagLib::String::Type)' /home/ivan/Applications/cover_art/setcover.cpp:81: undefined reference to TagLib::String::size() const'
/home/ivan/Applications/cover_art/setcover.cpp:81: undefined reference to TagLib::String::substr(unsigned int, unsigned int) const' /home/ivan/Applications/cover_art/setcover.cpp:81: undefined reference to TagLib::String::upper() const'
/home/ivan/Applications/cover_art/setcover.cpp:81: undefined reference to TagLib::String::~String()' /home/ivan/Applications/cover_art/setcover.cpp:86: undefined reference to TagLib::String::operator==(char const*) const'
/home/ivan/Applications/cover_art/setcover.cpp:89: undefined reference to TagLib::MP4::CoverArt::CoverArt(TagLib::MP4::CoverArt::Format, TagLib::ByteVector const&)' /home/ivan/Applications/cover_art/setcover.cpp:92: undefined reference to TagLib::MP4::File::File(char const*, bool, TagLib::AudioProperties::ReadStyle)'
`

I've updated it, changed from openssl and Google's base64 to the (public domain) b64 library. Tested compiling and running on Mac with home-brew (which has the taglib and libb64 packages).