bool AnalyzerWaveform::isDisabledOrLoadStoredSuccess(TrackPointer tio) const {
    ConstWaveformPointer pTrackWaveform = tio->getWaveform();
    ConstWaveformPointer pTrackWaveformSummary = tio->getWaveformSummary();
    ConstWaveformPointer pLoadedTrackWaveform;
    ConstWaveformPointer pLoadedTrackWaveformSummary;

    TrackId trackId = tio->getId();
    bool missingWaveform = pTrackWaveform.isNull();
    bool missingWavesummary = pTrackWaveformSummary.isNull();

    if (trackId.isValid() && (missingWaveform || missingWavesummary)) {
        QList<AnalysisDao::AnalysisInfo> analyses =
                m_pAnalysisDao->getAnalysesForTrack(trackId);

        QListIterator<AnalysisDao::AnalysisInfo> it(analyses);
        while (it.hasNext()) {
            const AnalysisDao::AnalysisInfo& analysis = it.next();
            WaveformFactory::VersionClass vc;

            if (analysis.type == AnalysisDao::TYPE_WAVEFORM) {
                vc = WaveformFactory::waveformVersionToVersionClass(analysis.version);
                if (missingWaveform && vc == WaveformFactory::VC_USE) {
                    pLoadedTrackWaveform = ConstWaveformPointer(
                            WaveformFactory::loadWaveformFromAnalysis(analysis));
                    missingWaveform = false;
                } else if (vc != WaveformFactory::VC_KEEP) {
                    // remove all other Analysis except that one we should keep
                    m_pAnalysisDao->deleteAnalysis(analysis.analysisId);
                }
            } if (analysis.type == AnalysisDao::TYPE_WAVESUMMARY) {
                vc = WaveformFactory::waveformSummaryVersionToVersionClass(analysis.version);
                if (missingWavesummary && vc == WaveformFactory::VC_USE) {
                    pLoadedTrackWaveformSummary = ConstWaveformPointer(
                            WaveformFactory::loadWaveformFromAnalysis(analysis));
                    missingWavesummary = false;
                } else if (vc != WaveformFactory::VC_KEEP) {
                    // remove all other Analysis except that one we should keep
                    m_pAnalysisDao->deleteAnalysis(analysis.analysisId);
                }
            }
        }
    }

    // If we don't need to calculate the waveform/wavesummary, skip.
    if (!missingWaveform && !missingWavesummary) {
        kLogger.debug() << "loadStored - Stored waveform loaded";
        if (pLoadedTrackWaveform) {
            tio->setWaveform(pLoadedTrackWaveform);
        }
        if (pLoadedTrackWaveformSummary) {
            tio->setWaveformSummary(pLoadedTrackWaveformSummary);
        }
        return true;
    }
    return false;
}

TEST_F(AutoDJProcessorTest, EnabledSuccess_PlayingDeck2_TrackLoadFailed) {
    TrackId testId = addTrackToCollection(kTrackLocationTest);
    ASSERT_TRUE(testId.isValid());

    // Pretend a track is playing on deck 2.
    TrackPointer pTrack(newTestTrack(nextTrackId(testId)));
    // Load track and mark it playing.
    deck2.slotLoadTrack(pTrack, true);
    // Indicate the track loaded successfully.
    deck2.fakeTrackLoadedEvent(pTrack);

    // Arbitrary to check that it was unchanged.
    master.crossfader.set(0.2447);

    PlaylistTableModel* pAutoDJTableModel = pProcessor->getTableModel();
    // The first track will fail to load and the second will succeed.
    pAutoDJTableModel->appendTrack(testId);
    pAutoDJTableModel->appendTrack(testId);

    EXPECT_CALL(*pProcessor, emitAutoDJStateChanged(AutoDJProcessor::ADJ_IDLE));
    EXPECT_CALL(*pProcessor, emitLoadTrackToPlayer(_, QString("[Channel1]"), false));

    AutoDJProcessor::AutoDJError err = pProcessor->toggleAutoDJ(true);
    EXPECT_EQ(AutoDJProcessor::ADJ_OK, err);
    EXPECT_EQ(AutoDJProcessor::ADJ_IDLE, pProcessor->getState());

    // No change to the crossfader or play states.
    EXPECT_DOUBLE_EQ(1, master.crossfader.get());
    EXPECT_DOUBLE_EQ(0.0, deck1.play.get());
    EXPECT_DOUBLE_EQ(1.0, deck2.play.get());

    // After the load failed signal we will receive another track load signal
    // for deck 1.
    EXPECT_CALL(*pProcessor, emitLoadTrackToPlayer(_, QString("[Channel1]"), false));

    // Pretend the track load fails.
    deck1.slotLoadTrack(pTrack, false);
    deck1.fakeTrackLoadFailedEvent(pTrack);

    // No change to the mode, crossfader, or play states.
    EXPECT_EQ(AutoDJProcessor::ADJ_IDLE, pProcessor->getState());
    EXPECT_DOUBLE_EQ(1, master.crossfader.get());
    EXPECT_DOUBLE_EQ(0.0, deck1.play.get());
    EXPECT_DOUBLE_EQ(1.0, deck2.play.get());

    // Pretend the track load succeeds.
    deck1.slotLoadTrack(pTrack, false);
    deck1.fakeTrackLoadedEvent(pTrack);

    // No change to the mode, crossfader, or play states.
    EXPECT_EQ(AutoDJProcessor::ADJ_IDLE, pProcessor->getState());
    EXPECT_DOUBLE_EQ(1.0, master.crossfader.get());
    EXPECT_DOUBLE_EQ(0.0, deck1.play.get());
    EXPECT_DOUBLE_EQ(1.0, deck2.play.get());
}

QList<AnalysisDao::AnalysisInfo> AnalysisDao::getAnalysesForTrack(TrackId trackId) {
    if (!m_db.isOpen() || !trackId.isValid()) {
        return QList<AnalysisInfo>();
    }

    QSqlQuery query(m_db);
    query.prepare(QString(
        "SELECT id, type, description, version, data_checksum FROM %1 "
        "WHERE track_id=:trackId").arg(s_analysisTableName));
    query.bindValue(":trackId", trackId.toVariant());

    return loadAnalysesFromQuery(trackId, &query);
}

TrackRef GlobalTrackCache::initTrackId(
        const TrackPointer& strongPtr,
        TrackRef trackRef,
        TrackId trackId) {
    DEBUG_ASSERT(strongPtr);
    DEBUG_ASSERT(!trackRef.getId().isValid());
    DEBUG_ASSERT(trackId.isValid());

    TrackRef trackRefWithId(trackRef, trackId);

    EvictAndSaveFunctor* pDel = std::get_deleter<EvictAndSaveFunctor>(strongPtr);
    DEBUG_ASSERT(pDel);

    // Insert item by id
    DEBUG_ASSERT(m_tracksById.find(trackId) == m_tracksById.end());
    m_tracksById.insert(std::make_pair(
            trackId,
            pDel->getCacheEntryPointer()));

    strongPtr->initId(trackId);
    DEBUG_ASSERT(createTrackRef(*strongPtr) == trackRefWithId);
    DEBUG_ASSERT(m_tracksById.find(trackId) != m_tracksById.end());

    return trackRefWithId;
}

bool AnalysisDao::deleteAnalysesForTrack(TrackId trackId) {
    if (!trackId.isValid()) {
        return false;
    }
    QSqlQuery query(m_db);
    query.prepare(QString(
        "SELECT id FROM %1 where track_id = :track_id").arg(s_analysisTableName));
    query.bindValue(":track_id", trackId.toVariant());

    if (!query.exec()) {
        LOG_FAILED_QUERY(query) << "couldn't delete analyses for track" << trackId;
        return false;
    }

    QList<int> analysesToDelete;
    const int idColumn = query.record().indexOf("id");
    while (query.next()) {
        analysesToDelete.append(
            query.value(idColumn).toInt());
    }
    foreach (int analysisId, analysesToDelete) {
        deleteAnalysis(analysisId);
    }

void GlobalTrackCacheResolver::initTrackIdAndUnlockCache(TrackId trackId) {
    DEBUG_ASSERT(m_pInstance);
    DEBUG_ASSERT(GlobalTrackCacheLookupResult::NONE != m_lookupResult);
    DEBUG_ASSERT(m_strongPtr);
    DEBUG_ASSERT(trackId.isValid());
    if (m_trackRef.getId().isValid()) {
        // Ignore initializing the same id twice
        DEBUG_ASSERT(m_trackRef.getId() == trackId);
    } else {
        m_trackRef = m_pInstance->initTrackId(
                m_strongPtr,
                m_trackRef,
                trackId);
        DEBUG_ASSERT(m_trackRef.getId() == trackId);
    }
    unlockCache();
    DEBUG_ASSERT(m_trackRef == createTrackRef(*m_strongPtr));
}

void GlobalTrackCache::resolve(
        GlobalTrackCacheResolver* /*in/out*/ pCacheResolver,
        QFileInfo /*in*/ fileInfo,
        TrackId trackId,
        SecurityTokenPointer pSecurityToken) {
    DEBUG_ASSERT(pCacheResolver);
    // Primary lookup by id (if available)
    if (trackId.isValid()) {
        if (debugLogEnabled()) {
            kLogger.debug()
                    << "Resolving track by id"
                    << trackId;
        }
        auto strongPtr = lookupById(trackId);
        if (strongPtr) {
            if (debugLogEnabled()) {
                kLogger.debug()
                        << "Cache hit - found track by id"
                        << trackId
                        << strongPtr.get();
            }
            TrackRef trackRef = createTrackRef(*strongPtr);
            pCacheResolver->initLookupResult(
                    GlobalTrackCacheLookupResult::HIT,
                    std::move(strongPtr),
                    std::move(trackRef));
            return;
        }
    }
    // Secondary lookup by canonical location
    // The TrackRef is constructed now after the lookup by ID failed to
    // avoid calculating the canonical file path if it is not needed.
    TrackRef trackRef = TrackRef::fromFileInfo(fileInfo, trackId);
    if (trackRef.hasCanonicalLocation()) {
        if (debugLogEnabled()) {
            kLogger.debug()
                    << "Resolving track by canonical location"
                    << trackRef.getCanonicalLocation();
        }
        auto strongPtr = lookupByRef(trackRef);
        if (strongPtr) {
            // Cache hit
            if (debugLogEnabled()) {
                kLogger.debug()
                        << "Cache hit - found track by canonical location"
                        << trackRef.getCanonicalLocation()
                        << strongPtr.get();
            }
            pCacheResolver->initLookupResult(
                    GlobalTrackCacheLookupResult::HIT,
                    std::move(strongPtr),
                    std::move(trackRef));
            return;
        }
    }
    if (!m_pSaver) {
        // Do not allocate any new tracks once the cache
        // has been deactivated
        DEBUG_ASSERT(isEmpty());
        kLogger.warning()
                << "Cache miss - caching has already been deactivated"
                << trackRef;
        return;
    }
    if (debugLogEnabled()) {
        kLogger.debug()
                << "Cache miss - allocating track"
                << trackRef;
    }
    auto deletingPtr = std::unique_ptr<Track, void (&)(Track*)>(
            new Track(
                    std::move(fileInfo),
                    std::move(pSecurityToken),
                    std::move(trackId)),
            deleteTrack);
    // Track objects live together with the cache on the main thread
    // and will be deleted later within the event loop. But this
    // function might be called from any thread, even from worker
    // threads without an event loop. We need to move the newly
    // created object to the target thread.
    deletingPtr->moveToThread(QApplication::instance()->thread());

    auto cacheEntryPtr = std::make_shared<GlobalTrackCacheEntry>(
            std::move(deletingPtr));
    auto savingPtr = TrackPointer(
            cacheEntryPtr->getPlainPtr(),
            EvictAndSaveFunctor(cacheEntryPtr));
    cacheEntryPtr->setSavingWeakPtr(savingPtr);

    if (debugLogEnabled()) {
        kLogger.debug()
                << "Cache miss - inserting new track into cache"
                << trackRef
                << deletingPtr.get();
    }

    if (trackRef.hasId()) {
        // Insert item by id
        DEBUG_ASSERT(m_tracksById.find(
                trackRef.getId()) == m_tracksById.end());
//.........这里部分代码省略.........

 static TrackId nextTrackId(TrackId trackId) {
     return TrackId(trackId.toInt() + 1);
 }