metabundle.cpp

来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C++ 代码 · 共 1,884 行 · 第 1/5 页

// Max Howell <[e-mail]>, (C) 2004
// Alexandre Pereira de Oliveira <[e-mail]>, (C) 2005, 2006
// Gábor Lehel <[e-mail]>, (C) 2005, 2006
// Shane King <[e-mail]>, (C) 2006
// Peter C. Ndikuwera <[e-mail]>, (C) 2006
// License: GNU General Public License V2


#define DEBUG_PREFIX "MetaBundle"

#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <fcntl.h>

#include "amarok.h"
#include "amarokconfig.h"
#include "debug.h"
#include "collectiondb.h"
#include "metabundlesaver.h"
#include <kapplication.h>
#include <kfilemetainfo.h>
#include <kio/global.h>
#include <kio/job.h>
#include <kio/jobclasses.h>
#include <kio/netaccess.h>
#include <kmdcodec.h>
#include <qdeepcopy.h>
#include <qfile.h> //decodePath()
#include <taglib/attachedpictureframe.h>
#include <taglib/fileref.h>
#include <taglib/id3v1genres.h> //used to load genre list
#include <taglib/mpegfile.h>
#include <taglib/tag.h>
#include <taglib/tstring.h>
#include <taglib/tlist.h>
#include <taglib/apetag.h>
#include <taglib/id3v2tag.h>
#include <taglib/id3v1tag.h>
#include <taglib/mpcfile.h>
#include <taglib/mpegfile.h>
#include <taglib/oggfile.h>
#include <taglib/oggflacfile.h>
#include <taglib/vorbisfile.h>
#include <taglib/flacfile.h>
#include <taglib/textidentificationframe.h>
#include <taglib/uniquefileidentifierframe.h>
#include <taglib/xiphcomment.h>

#include <config.h>
#ifdef HAVE_MP4V2
#include "metadata/mp4/mp4file.h"
#include "metadata/mp4/mp4tag.h"
#else
#include "metadata/m4a/mp4file.h"
#include "metadata/m4a/mp4itunestag.h"
#endif

#include "lastfm.h"
#include "metabundle.h"
#include "podcastbundle.h"


namespace Amarok {
    KURL detachedKURL( const KURL &url ) {
        KURL urlCopy;
        if (!url.isEmpty())
            urlCopy = KURL(url.url());
        return urlCopy;
    }
}


MetaBundle::EmbeddedImage::EmbeddedImage( const TagLib::ByteVector& data, const TagLib::String& description )
    : m_description( TStringToQString( description ) )
{
    m_data.duplicate( data.data(), data.size() );
}

const QCString &MetaBundle::EmbeddedImage::hash() const
{
    if( m_hash.isEmpty() ) {
        m_hash = KMD5( m_data ).hexDigest();
    }
    return m_hash;
}

bool MetaBundle::EmbeddedImage::save( const QDir& dir ) const
{
    QFile   file( dir.filePath( hash() ) );

    if( file.open( IO_WriteOnly | IO_Raw ) ) {
        const Q_LONG s = file.writeBlock( m_data.data(), m_data.size() );
        if( s >= 0 && Q_ULONG( s ) == m_data.size() ) {
            debug() << "EmbeddedImage::save " << file.name() << endl;
            return true;
        }
        file.remove();
    }
    debug() << "EmbeddedImage::save failed! " << file.name() << endl;
    return false;
}

/// These are untranslated and used for storing/retrieving XML playlist
const QString &MetaBundle::exactColumnName( int c ) //static
{
    // construct static qstrings to avoid constructing them all the time
    static QString columns[] = {
        "Filename", "Title", "Artist", "AlbumArtist", "Composer", "Year", "Album", "DiscNumber", "Track", "BPM", "Genre", "Comment",
        "Directory", "Type", "Length", "Bitrate", "SampleRate", "Score", "Rating", "PlayCount", "LastPlayed",
        "Mood", "Filesize" };
    static QString error( "ERROR" );

    if ( c >= 0 && c < NUM_COLUMNS )
        return columns[c];
    else
        return error;
}

const QString MetaBundle::prettyColumnName( int index ) //static
{
    switch( index )
    {
        case Filename:   return i18n( "Filename"    );
        case Title:      return i18n( "Title"       );
        case Artist:     return i18n( "Artist"      );
        case AlbumArtist:return i18n( "Album Artist");
        case Composer:   return i18n( "Composer"    );
        case Year:       return i18n( "Year"        );
        case Album:      return i18n( "Album"       );
        case DiscNumber: return i18n( "Disc Number" );
        case Track:      return i18n( "Track"       );
        case Bpm:        return i18n( "BPM"         );
        case Genre:      return i18n( "Genre"       );
        case Comment:    return i18n( "Comment"     );
        case Directory:  return i18n( "Directory"   );
        case Type:       return i18n( "Type"        );
        case Length:     return i18n( "Length"      );
        case Bitrate:    return i18n( "Bitrate"     );
        case SampleRate: return i18n( "Sample Rate" );
        case Score:      return i18n( "Score"       );
        case Rating:     return i18n( "Rating"      );
        case PlayCount:  return i18n( "Play Count"  );
        case LastPlayed: return i18n( "Column name", "Last Played" );
        case Mood:       return i18n( "Mood"        );
        case Filesize:   return i18n( "File Size"   );
    }
    return "This is a bug.";
}

int MetaBundle::columnIndex( const QString &name )
{
    for( int i = 0; i < NUM_COLUMNS; ++i )
        if( exactColumnName( i ).lower() == name.lower() )
            return i;
    return -1;
}

MetaBundle::MetaBundle()
        : m_uniqueId( QString::null )
        , m_year( Undetermined )
        , m_discNumber( Undetermined )
        , m_track( Undetermined )
        , m_bpm( Undetermined )
        , m_bitrate( Undetermined )
        , m_length( Undetermined )
        , m_sampleRate( Undetermined )
        , m_score( Undetermined )
        , m_rating( Undetermined )
        , m_playCount( Undetermined )
        , m_lastPlay( abs( Undetermined ) )
        , m_filesize( Undetermined )
        , m_moodbar( 0 )
        , m_type( other )
        , m_exists( true )
        , m_isValidMedia( true )
        , m_isCompilation( false )
        , m_notCompilation( false )
        , m_safeToSave( false )
        , m_waitingOnKIO( 0 )
        , m_tempSavePath( QString::null )
        , m_origRenamedSavePath( QString::null )
        , m_tempSaveDigest( 0 )
        , m_saveFileref( 0 )
        , m_podcastBundle( 0 )
        , m_lastFmBundle( 0 )
        , m_isSearchDirty(true)
        , m_searchColumns( Undetermined )
{
    init();
}

MetaBundle::MetaBundle( const KURL &url, bool noCache, TagLib::AudioProperties::ReadStyle readStyle, EmbeddedImageList* images )
    : m_url( url )
    , m_uniqueId( QString::null )
    , m_year( Undetermined )
    , m_discNumber( Undetermined )
    , m_track( Undetermined )
    , m_bpm( Undetermined )
    , m_bitrate( Undetermined )
    , m_length( Undetermined )
    , m_sampleRate( Undetermined )
    , m_score( Undetermined )
    , m_rating( Undetermined )
    , m_playCount( Undetermined )
    , m_lastPlay( abs( Undetermined ) )
    , m_filesize( Undetermined )
    , m_moodbar( 0 )
    , m_type( other )
    , m_exists( isFile() && QFile::exists( url.path() ) )
    , m_isValidMedia( false )
    , m_isCompilation( false )
    , m_notCompilation( false )
    , m_safeToSave( false )
    , m_waitingOnKIO( 0 )
    , m_tempSavePath( QString::null )
    , m_origRenamedSavePath( QString::null )
    , m_tempSaveDigest( 0 )
    , m_saveFileref( 0 )
    , m_podcastBundle( 0 )
    , m_lastFmBundle( 0 )
    , m_isSearchDirty(true)
    , m_searchColumns( Undetermined )
{
    if ( exists() )
    {
        if ( !noCache )
            m_isValidMedia = CollectionDB::instance()->bundleForUrl( this );

        if ( !isValidMedia() || ( !m_podcastBundle && m_length <= 0 ) )
            readTags( readStyle, images );
    }
    else
    {
        // if it's a podcast we might get some info this way
        CollectionDB::instance()->bundleForUrl( this );
        m_bitrate = m_length = m_sampleRate = Unavailable;
    }
}

//StreamProvider ctor
MetaBundle::MetaBundle( const QString& title,
                        const QString& streamUrl,
                        const int      bitrate,
                        const QString& genre,
                        const QString& streamName,
                        const KURL& url )
        : m_url       ( url )
        , m_genre     ( genre )
        , m_streamName( streamName )
        , m_streamUrl ( streamUrl )
        , m_uniqueId( QString::null )
        , m_year( 0 )
        , m_discNumber( 0 )
        , m_track( 0 )
        , m_bpm( Undetermined )
        , m_bitrate( bitrate )
        , m_length( Irrelevant )
        , m_sampleRate( Unavailable )
        , m_score( Undetermined )
        , m_rating( Undetermined )
        , m_playCount( Undetermined )
        , m_lastPlay( abs( Undetermined ) )
        , m_filesize( Undetermined )
        , m_moodbar( 0 )
        , m_type( other )
        , m_exists( true )
        , m_isValidMedia( false )
        , m_isCompilation( false )
        , m_notCompilation( false )
        , m_safeToSave( false )
        , m_waitingOnKIO( 0 )
        , m_tempSavePath( QString::null )
        , m_origRenamedSavePath( QString::null )
        , m_tempSaveDigest( 0 )
        , m_saveFileref( 0 )
        , m_podcastBundle( 0 )
        , m_lastFmBundle( 0 )
        , m_isSearchDirty( true )
        , m_searchColumns( Undetermined )
{
    if( title.contains( '-' ) )
    {
        m_title  = title.section( '-', 1, 1 ).stripWhiteSpace();
        m_artist = title.section( '-', 0, 0 ).stripWhiteSpace();
    }
    else
    {
        m_title  = title;
        m_artist = streamName; //which is sort of correct..
    }
}

MetaBundle::MetaBundle( const MetaBundle &bundle )
        : m_moodbar( 0 )
{
    *this = bundle;
}

MetaBundle::~MetaBundle()
{
    delete m_podcastBundle;
    delete m_lastFmBundle;

    if( m_moodbar != 0 )
      delete m_moodbar;
}

MetaBundle&
MetaBundle::operator=( const MetaBundle& bundle )
{
    m_url = bundle.m_url;
    m_title = bundle.m_title;
    m_artist = bundle.m_artist;
    m_albumArtist = bundle.m_albumArtist;
    m_composer = bundle.m_composer;
    m_album = bundle.m_album;
    m_comment = bundle.m_comment;
    m_genre = bundle.m_genre;
    m_streamName = bundle.m_streamName;
    m_streamUrl = bundle.m_streamUrl;
    m_uniqueId = bundle.m_uniqueId;
    m_year = bundle.m_year;
    m_discNumber = bundle.m_discNumber;
    m_track = bundle.m_track;
    m_bpm = bundle.m_bpm;
    m_bitrate = bundle.m_bitrate;
    m_length = bundle.m_length;
    m_sampleRate = bundle.m_sampleRate;
    m_score = bundle.m_score;
    m_rating = bundle.m_rating;
    m_playCount = bundle.m_playCount;
    m_lastPlay = bundle.m_lastPlay;
    m_filesize = bundle.m_filesize;
    m_type = bundle.m_type;
    m_exists = bundle.m_exists;
    m_isValidMedia = bundle.m_isValidMedia;
    m_isCompilation = bundle.m_isCompilation;
    m_notCompilation = bundle.m_notCompilation;
    m_safeToSave = bundle.m_safeToSave;
    m_waitingOnKIO = bundle.m_waitingOnKIO;
    m_tempSavePath = bundle.m_tempSavePath;
    m_origRenamedSavePath = bundle.m_origRenamedSavePath;
    m_tempSaveDigest = bundle.m_tempSaveDigest;
    m_saveFileref = bundle.m_saveFileref;

    if( bundle.m_moodbar != 0)
      {
        if( m_moodbar == 0 )
          m_moodbar = new Moodbar( this );
        *m_moodbar = *bundle.m_moodbar;
      }
    else
      {
        // If m_moodbar != 0, it's initialized for a reason
        // Deleting it makes the PrettySlider code more ugly,
        // since it'd have to reconnect the jobEvent() signal.
        if( m_moodbar != 0 )
          m_moodbar->reset();
      }


//    delete m_podcastBundle; why does this crash Amarok? apparently m_podcastBundle isn't always initialized.
    m_podcastBundle = 0;
    if( bundle.m_podcastBundle )
        setPodcastBundle( *bundle.m_podcastBundle );

//    delete m_lastFmBundle; same as above
    m_lastFmBundle = 0;
    if( bundle.m_lastFmBundle )
        setLastFmBundle( *bundle.m_lastFmBundle );

	m_isSearchDirty = true;
    return *this;