C++ File::save方法代码示例

bool MetaIOID3::writeVolatileMetadata(const Metadata* mdata)
{
    QString filename = mdata->Filename();
    int rating = mdata->Rating();
    int playcount = mdata->PlayCount();
    TagLib::MPEG::File *mpegfile = OpenFile(filename);

    if (!mpegfile)
        return false;

    TagLib::ID3v2::Tag *tag = mpegfile->ID3v2Tag();

    if (!tag)
    {
        delete mpegfile;
        return false;
    }

    bool result = (writeRating(tag, rating) && writePlayCount(tag, playcount));

    mpegfile->save();
    delete mpegfile;

    return result;
}

/*!
 * \brief Remove the albumart image from the file
 *
 * \param filename The music file to remove the albumart
 * \param albumart The Album Art image to remove
 * \returns True if successful
 */
bool MetaIOID3::removeAlbumArt(const QString &filename, const AlbumArtImage *albumart)
{
    if (filename.isEmpty() || !albumart)
        return false;

    AttachedPictureFrame::Type type = AttachedPictureFrame::Other;
    switch (albumart->imageType)
    {
        case IT_FRONTCOVER:
            type = AttachedPictureFrame::FrontCover;
            break;
        case IT_BACKCOVER:
            type = AttachedPictureFrame::BackCover;
            break;
        case IT_CD:
            type = AttachedPictureFrame::Media;
            break;
        case IT_INLAY:
            type = AttachedPictureFrame::LeafletPage;
            break;
        default:
            type = AttachedPictureFrame::Other;
            break;
    }

    TagLib::MPEG::File *mpegfile = OpenFile(filename);

    if (!mpegfile)
        return false;

    TagLib::ID3v2::Tag *tag = mpegfile->ID3v2Tag();

    if (!tag)
    {
        delete mpegfile;
        return false;
    }

    AttachedPictureFrame *apic = findAPIC(tag, type, QStringToTString(albumart->description));
    if (!apic)
    {
        delete mpegfile;
        return false;
    }

    tag->removeFrame(apic);

    mpegfile->save();
    delete mpegfile;

    return true;
}

bool FileHelper::save()
{
	if (_fileType == EXT_MP3) {
		TagLib::MPEG::File *mpegFile = static_cast<TagLib::MPEG::File*>(_file);
		// TagLib updates tags with the latest version (ID3v2.4)
		// We just want to save the file with the exact same version!
		if (mpegFile->hasID3v2Tag()) {
			return mpegFile->save(TagLib::MPEG::File::AllTags, false, mpegFile->ID3v2Tag()->header()->majorVersion());
		}
	} else if (_fileType != EXT_UNKNOWN) {
		return _file->save();
	}
	return false;
}

bool CTagBase::addImage(wchar_t* s)
{
	if (!_tagFile) return false;
	TagLib::MPEG::File *pAudioFile = (TagLib::MPEG::File *)_tagFile.get();
	CString strFileName = s;
	ImageFile imageFile((CW2A)strFileName.GetBuffer());
	if (!pAudioFile->isValid() || !imageFile.isValid())
		return false;
	TagLib::ID3v2::Tag *tag = pAudioFile->ID3v2Tag(true);
	TagLib::ID3v2::AttachedPictureFrame *frame = new TagLib::ID3v2::AttachedPictureFrame;
	frame->setMimeType(imageFile.mimeType());
	frame->setPicture(imageFile.data());
	tag->addFrame(frame);
	return pAudioFile->save();

}

bool mttFile::saveTag( void )
{
    fileref = new TagLib::FileRef( QFile::encodeName( fname ).constData() );

    if ( ismpeg ) {
        TagLib::MPEG::File *f = dynamic_cast<TagLib::MPEG::File *>(fileref->file());

        // Remove id3v1 tag. Help put that hack into eternal rest :-)
        f->strip( TagLib::MPEG::File::ID3v1, true );
        //qDebug("ID3v1 tag stripped!");

        TagLib::Tag::duplicate( tag, dynamic_cast<TagLib::Tag *>( f->ID3v2Tag( true ) ), true );

        // Save extra mp3 tags
        TagLib::ID3v2::TextIdentificationFrame *myframe;
        TagLib::ID3v2::Tag *mytag;

        mytag = f->ID3v2Tag( false );
        for ( QStringList::Iterator it = mp3eframes.begin(); it != mp3eframes.end(); ++it ) {
            myframe = new TagLib::ID3v2::TextIdentificationFrame( (*it).toAscii().constData(), TagLib::String::UTF8 );
            mytag->removeFrames( (*it).toAscii().constData() );
            ++it;
            myframe->setText( Q4StringToTString( (*it) ) );
            mytag->addFrame( myframe );
        }

        
	delete fileref;
	fileref = NULL;
	return f->save( TagLib::MPEG::File::ID3v2, true );
    }
    else {
        TagLib::Tag::duplicate( tag, fileref->tag(), true );
	delete fileref;
	fileref = NULL;
        return fileref->save();
    }

}

/**
 * Save a file back to disc
 *
 * This is a wrapper around a file type's save() method, which
 * also handles file type specific actions.
 *
 * @param   file    pointer to the taggit_file structure describing
 *                  the file in question
 *
 * @return      1 if the save() method returned true; 0 otherwise
 * @sideeffects none
 */
int
taggit_file_save(struct taggit_file *file)
{
    bool rc;
    int mask;

    switch (file->type) {
    case FT_MPEG:
        TagLib::MPEG::File *f;

        f = reinterpret_cast<TagLib::MPEG::File *>(file->data);
        mask = setup_get_write_mask(FT_MPEG);
#ifdef TAGGIT_DEBUG
        fprintf(stderr, "writemask (mp3): %d\n", mask);
#endif
        rc = f->save(mask, 1);
        break;
    default:
        rc = taglib_file_save(file->data);
    }

    return rc ? 1 : 0;
}

/*!
 * \brief Write the albumart image to the file
 *
 * \param filename The music file to add the albumart
 * \param albumart The Album Art image to write
 * \returns True if successful
 *
 * \Note We always save the image in JPEG format
 */
bool MetaIOID3::writeAlbumArt(const QString &filename, const AlbumArtImage *albumart)
{
    if (filename.isEmpty() || !albumart)
        return false;

    // load the image into a QByteArray
    QImage image(albumart->filename);
    QByteArray imageData;
    QBuffer buffer(&imageData);
    buffer.open(QIODevice::WriteOnly);
    image.save(&buffer, "JPEG");

    AttachedPictureFrame::Type type = AttachedPictureFrame::Other;
    switch (albumart->imageType)
    {
        case IT_FRONTCOVER:
            type = AttachedPictureFrame::FrontCover;
            break;
        case IT_BACKCOVER:
            type = AttachedPictureFrame::BackCover;
            break;
        case IT_CD:
            type = AttachedPictureFrame::Media;
            break;
        case IT_INLAY:
            type = AttachedPictureFrame::LeafletPage;
            break;
        default:
            type = AttachedPictureFrame::Other;
            break;
    }

    TagLib::MPEG::File *mpegfile = OpenFile(filename);

    if (!mpegfile)
        return false;

    TagLib::ID3v2::Tag *tag = mpegfile->ID3v2Tag();

    if (!tag)
    {
        delete mpegfile;
        return false;
    }

    AttachedPictureFrame *apic = findAPIC(tag, type, QStringToTString(albumart->description));

    if (!apic)
    {
        apic = new AttachedPictureFrame();
        tag->addFrame(apic);
        apic->setType(type);
    }

    QString mimetype = "image/jpeg";

    TagLib::ByteVector bytevector;
    bytevector.setData(imageData.data(), imageData.size());

    apic->setMimeType(QStringToTString(mimetype));
    apic->setPicture(bytevector);
    apic->setDescription(QStringToTString(albumart->description));

    mpegfile->save();
    delete mpegfile;

    return true;
}

/*!
 * \copydoc MetaIO::write()
 */
bool MetaIOID3::write(Metadata* mdata)
{
    TagLib::MPEG::File *mpegfile = OpenFile(mdata->Filename());

    if (!mpegfile)
        return false;

    TagLib::ID3v2::Tag *tag = mpegfile->ID3v2Tag();

    if (!tag)
    {
        delete mpegfile;
        return false;
    }

    WriteGenericMetadata(tag, mdata);

    // MythTV rating and playcount, stored in POPM frame
    writeRating(tag, mdata->Rating());
    writePlayCount(tag, mdata->PlayCount());

    // MusicBrainz ID
    UserTextIdentificationFrame *musicbrainz = NULL;
    musicbrainz = find(tag, "MusicBrainz Album Artist Id");

    if (mdata->Compilation())
    {

        if (!musicbrainz)
        {
            musicbrainz = new UserTextIdentificationFrame(TagLib::String::UTF8);
            tag->addFrame(musicbrainz);
            musicbrainz->setDescription("MusicBrainz Album Artist Id");
        }

        musicbrainz->setText(MYTH_MUSICBRAINZ_ALBUMARTIST_UUID);
    }
    else if (musicbrainz)
        tag->removeFrame(musicbrainz);

    // Compilation Artist Frame (TPE4/2)
    if (!mdata->CompilationArtist().isEmpty())
    {
        TextIdentificationFrame *tpe4frame = NULL;
        TagLib::ID3v2::FrameList tpelist = tag->frameListMap()["TPE4"];
        if (!tpelist.isEmpty())
            tpe4frame = (TextIdentificationFrame *)tpelist.front();

        if (!tpe4frame)
        {
            tpe4frame = new TextIdentificationFrame(TagLib::ByteVector("TPE4"),
                                                    TagLib::String::UTF8);
                                                    tag->addFrame(tpe4frame);
        }
        tpe4frame->setText(QStringToTString(mdata->CompilationArtist()));


        TextIdentificationFrame *tpe2frame = NULL;
        tpelist = tag->frameListMap()["TPE2"];
        if (!tpelist.isEmpty())
            tpe2frame = (TextIdentificationFrame *)tpelist.front();

        if (!tpe2frame)
        {
            tpe2frame = new TextIdentificationFrame(TagLib::ByteVector("TPE2"),
                                                    TagLib::String::UTF8);
                                                    tag->addFrame(tpe2frame);
        }
        tpe2frame->setText(QStringToTString(mdata->CompilationArtist()));
    }

    bool result = mpegfile->save();

    delete mpegfile;

    return result;
}