private void CopyID32DataToMP4(ID3V2Tag.id3tag id3tag, MP4.ATOM mp4)
{
if (id3tag == null)
{
return;
}
var geob = id3tag.frame.Find(_ => _.id == "GEOB" && _.geob_mime.StartsWith("image/"));
if ((geob == null) || (geob.geob_binarydata == null))
{
return;
}
var covrdata = new MP4.ATOM_raw();
covrdata.AtomCode = Encoding.ASCII.GetBytes("data");
covrdata.data = new byte[geob.geob_binarydata.Length + 8];
covrdata.data[0] = 0x00;
covrdata.data[1] = 0x00;
covrdata.data[2] = 0x00;
covrdata.data[3] = 0x0D;
covrdata.data[4] = 0x00;
covrdata.data[5] = 0x00;
covrdata.data[6] = 0x00;
covrdata.data[7] = 0x00;
Buffer.BlockCopy(geob.geob_binarydata, 0, covrdata.data, 8, geob.geob_binarydata.Length);
var covratom = new MP4.ATOM_covr();
covratom.AtomCode = Encoding.ASCII.GetBytes("covr");
var covr = mp4.GetChildNode <MP4.ATOM_covr>();
if (covr == null)
{
covr = new MP4.ATOM_covr();
covr.AtomCode = Encoding.ASCII.GetBytes("covr");
var ilst = mp4.GetChildNode <MP4.ATOM_ilst>();
if (ilst == null)
{
return;
}
ilst.AddChild(covr);
}
covr.AddChild(covrdata);
AppendLog(" 歌詞画像をコピーしました");
}
private static string getTagText <T>(MP4.ATOM root) where T : MP4.ATOM
{
var node = root.GetChildNode <T>();
if (node == null)
{
return(null);
}
var data = (MP4.ATOM_data)node.First();
if (data == null)
{
return(null);
}
return(data.getTextData());
}
