taglib.cpp

VLC Player Source Code

    f = FileRef( local_name );
    LocaleFree( local_name );
#endif

    if( f.isNull() )
        return VLC_EGENERIC;

    if ( !f.tag() || f.tag()->isEmpty() )
        return VLC_EGENERIC;

    p_demux_meta->p_meta = p_meta = vlc_meta_New();
    Tag *p_tag = f.tag();

    if( MPEG::File *p_mpeg =
        dynamic_cast<MPEG::File *>(f.file() ) )
    {
        if( p_mpeg->ID3v2Tag() )
        {
            ID3v2::Tag *p_tag = p_mpeg->ID3v2Tag();
            ID3v2::FrameList list = p_tag->frameListMap()["UFID"];
            ID3v2::UniqueFileIdentifierFrame* p_ufid;
            for( ID3v2::FrameList::Iterator iter = list.begin();
                    iter != list.end(); iter++ )
            {
                p_ufid = dynamic_cast<ID3v2::UniqueFileIdentifierFrame*>(*iter);
                const char *owner = p_ufid->owner().toCString();
                if (!strcmp( owner, "http://musicbrainz.org" ))
                {
                    /* ID3v2 UFID contains up to 64 bytes binary data
                        * but in our case it will be a '\0'
                        * terminated string */
                    char *psz_ufid = (char*) malloc( 64 );
                    int j = 0;
                    if( psz_ufid )
                    {
                        while( ( j < 63 ) &&
                               ( j < p_ufid->identifier().size() ) )
                            psz_ufid[j] = p_ufid->identifier()[j++];
                        psz_ufid[j] = '\0';
                        vlc_meta_SetTrackID( p_meta, psz_ufid );
                        free( psz_ufid );
                    }
                }
            }

            list = p_tag->frameListMap()["TXXX"];
            ID3v2::UserTextIdentificationFrame* p_txxx;
            for( ID3v2::FrameList::Iterator iter = list.begin();
                    iter != list.end(); iter++ )
            {
                p_txxx = dynamic_cast<ID3v2::UserTextIdentificationFrame*>(*iter);
                const char *psz_desc= p_txxx->description().toCString();
                vlc_meta_AddExtra( p_meta, psz_desc,
                            p_txxx->fieldList().toString().toCString());
            }
#if 0
            list = p_tag->frameListMap()["RVA2"];
            ID3v2::RelativeVolumeFrame* p_rva2;
            for( ID3v2::FrameList::Iterator iter = list.begin();
                    iter != list.end(); iter++ )
            {
                p_rva2 = dynamic_cast<ID3v2::RelativeVolumeFrame*>(*iter);
                /* TODO: process rva2 frames */
            }
#endif
            list = p_tag->frameList();
            ID3v2::Frame* p_t;
            char psz_tag[4];
            for( ID3v2::FrameList::Iterator iter = list.begin();
                    iter != list.end(); iter++ )
            {
                p_t = dynamic_cast<ID3v2::Frame*> (*iter);
                memcpy( psz_tag, p_t->frameID().data(), 4);

#define SET( foo, bar ) if( !strncmp( psz_tag, foo, 4 ) ) \
vlc_meta_Set##bar( p_meta, p_t->toString().toCString(true))
                SET( "TPUB", Publisher );
                SET( "TCOP", Copyright );
                SET( "TENC", EncodedBy );
                SET( "TLAN", Language );
                //SET( "POPM", Rating ); /* rating needs special handling in id3v2 */
                //if( !strncmp( psz_tag, "RVA2", 4 ) )
                    /* TODO */
#undef SET
            }
        }
    }

    else if( Ogg::Vorbis::File *p_ogg_v =
        dynamic_cast<Ogg::Vorbis::File *>(f.file() ) )
    {
        int i_ogg_v_length = p_ogg_v->audioProperties()->length();

        input_thread_t *p_input = (input_thread_t *)
                vlc_object_find( p_demux,VLC_OBJECT_INPUT, FIND_PARENT );
        if( p_input )
        {
            input_item_t *p_item = input_GetItem( p_input );
            if( p_item )
                input_item_SetDuration( p_item,
                        (mtime_t) i_ogg_v_length * 1000000 );
            vlc_object_release( p_input );
        }

    }
#if 0 /* at this moment, taglib is unable to detect ogg/flac files
* becauses type detection is based on file extension:
* ogg = ogg/vorbis
* flac = flac
* ø = ogg/flac
*/
    else if( Ogg::FLAC::File *p_ogg_f =
        dynamic_cast<Ogg::FLAC::File *>(f.file() ) )
    {
        long i_ogg_f_length = p_ogg_f->streamLength();
        input_thread_t *p_input = (input_thread_t *)
                vlc_object_find( p_demux, VLC_OBJECT_INPUT, FIND_PARENT );
        if( p_input )
        {
            input_item_t *p_item = input_GetItem( p_input );
            if( p_item )
                input_item_SetDuration( p_item,
                        (mtime_t) i_ogg_f_length * 1000000 );
            vlc_object_release( p_input );
        }
    }
#endif
    else if( FLAC::File *p_flac =
        dynamic_cast<FLAC::File *>(f.file() ) )
    {
        long i_flac_length = p_flac->audioProperties()->length();
        input_thread_t *p_input = (input_thread_t *)
                vlc_object_find( p_demux, VLC_OBJECT_INPUT, FIND_PARENT );
        if( p_input )
        {
            input_item_t *p_item = input_GetItem( p_input );
            if( p_item )
                input_item_SetDuration( p_item,
                        (mtime_t) i_flac_length * 1000000 );
            vlc_object_release( p_input );
        }
    }

#define SET( foo, bar ) vlc_meta_Set##foo( p_meta, p_tag->bar ().toCString(true))
#define SETINT( foo, bar ) { \
        char psz_tmp[10]; \
        snprintf( (char*)psz_tmp, 10, "%d", p_tag->bar() ); \
        vlc_meta_Set##foo( p_meta, (char*)psz_tmp ); \
    }

    SET( Title, title );
    SET( Artist, artist );
    SET( Album, album );
    SET( Description, comment );
    SET( Genre, genre );
    SETINT( Date, year );
    SETINT( Tracknum , track );
#undef SET
#undef SETINT

    DetectImage( f, p_demux );

    return VLC_SUCCESS;
}

static int WriteMeta( vlc_object_t *p_this )
{
    playlist_t *p_playlist = (playlist_t *)p_this;
    meta_export_t *p_export = (meta_export_t *)p_playlist->p_private;
    input_item_t *p_item = p_export->p_item;

    if( p_item == NULL )
    {
        msg_Err( p_this, "Can't save meta data of an empty input" );
        return VLC_EGENERIC;
    }

    FileRef f( p_export->psz_file );
    if( f.isNull() || !f.tag() || f.file()->readOnly() )
    {
        msg_Err( p_this, "File %s can't be opened for tag writing\n",
            p_export->psz_file );
        return VLC_EGENERIC;
    }

    msg_Dbg( p_this, "Writing metadata for %s", p_export->psz_file );

    Tag *p_tag = f.tag();

    char *psz_meta;

#define SET(a,b) \
        if(b) { \
            String *psz_##a = new String( b, \
                String::UTF8 ); \
            p_tag->set##a( *psz_##a ); \
            delete psz_##a; \
        }


    psz_meta = input_item_GetArtist( p_item );
    SET( Artist, psz_meta );
    free( psz_meta );

    psz_meta = input_item_GetTitle( p_item );
    if( !psz_meta ) psz_meta = input_item_GetName( p_item );
    String *psz_title = new String( psz_meta,
        String::UTF8 );
    p_tag->setTitle( *psz_title );
    delete psz_title;
    free( psz_meta );

    psz_meta = input_item_GetAlbum( p_item );
    SET( Album, psz_meta );
    free( psz_meta );

    psz_meta = input_item_GetGenre( p_item );
    SET( Genre, psz_meta );
    free( psz_meta );

#undef SET

    psz_meta = input_item_GetDate( p_item );
    if( psz_meta ) p_tag->setYear( atoi( psz_meta ) );
    free( psz_meta );

    psz_meta = input_item_GetTrackNum( p_item );
    if( psz_meta ) p_tag->setTrack( atoi( psz_meta ) );
    free( psz_meta );

    if( ID3v2::Tag *p_id3tag =
        dynamic_cast<ID3v2::Tag *>(p_tag) )
    {
#define WRITE( foo, bar ) \
        psz_meta = input_item_Get##foo( p_item ); \
        if( psz_meta ) \
        { \
            ByteVector p_byte( bar, 4 ); \
            ID3v2::TextIdentificationFrame p_frame( p_byte ); \
            p_frame.setText( psz_meta ); \
            p_id3tag->addFrame( &p_frame ); \
            free( psz_meta ); \
        } \

        WRITE( Publisher, "TPUB" );
        WRITE( Copyright, "TCOP" );
        WRITE( EncodedBy, "TENC" );
        WRITE( Language, "TLAN" );

#undef WRITE
    }

    f.save();
    return VLC_SUCCESS;
}

static int DownloadArt( vlc_object_t *p_this )
{
    /* We need to be passed the file name
     * Fetch the thing from the file, save it to the cache folder
     */
    return VLC_EGENERIC;
}