C++ Filter::is_valid方法代码示例

void BinController::duplicateFilters(Mlt::Producer original, Mlt::Producer clone)
{
    Mlt::Service clipService(original.get_service());
    Mlt::Service dupService(clone.get_service());
    //delete original;
    //delete clone;
    int ct = 0;
    Mlt::Filter *filter = clipService.filter(ct);
    while (filter) {
        // Only duplicate Kdenlive filters, and skip the fade in effects
        //fprintf(stderr, "CHKNG FILTER: %s\n", filter->get("kdenlive_id"));
        if (filter->is_valid()/* && strcmp(filter->get("kdenlive_id"), "") && strcmp(filter->get("kdenlive_id"), "fadein") && strcmp(filter->get("kdenlive_id"), "fade_from_black")*/) {
            // looks like there is no easy way to duplicate a filter,
            // so we will create a new one and duplicate its properties
            Mlt::Filter *dup = new Mlt::Filter(*original.profile(), filter->get("mlt_service"));
            if (dup && dup->is_valid()) {
                Mlt::Properties entries(filter->get_properties());
                for (int i = 0; i < entries.count(); ++i) {
                    dup->set(entries.get_name(i), entries.get(i));
                }
                dupService.attach(*dup);
            }
        }
        ct++;
        filter = clipService.filter(ct);
    }
}

QVariant AttachedFiltersModel::data(const QModelIndex &index, int role) const
{
    if ( !m_producer || !m_producer->is_valid()
        || index.row() >= m_producer->filter_count())
        return QVariant();
    switch (role ) {
    case Qt::DisplayRole: {
            QVariant result;
            Mlt::Filter* filter = filterForRow(index.row());
            if (filter && filter->is_valid()) {
                // Relabel by QML UI
                QmlMetadata* meta = MAIN.filtersDock()->qmlMetadataForService(filter);
                if (meta)
                    result = meta->name();
                // Fallback is raw mlt_service name
                else if (filter->get("mlt_service"))
                    result = QString::fromUtf8(filter->get("mlt_service"));
            }
            // Relabel for widgets UIs
            if (result == "movit.blur" || result == "boxblur")
                result = tr("Blur");
            else if (result == "movit.lift_gamma_gain" || result == "frei0r.coloradj_RGB")
                result = tr("Color Grading");
            else if (result == "crop")
                result = tr("Crop");
            else if (result == "movit.glow" || result == "frei0r.glow")
                result = tr("Glow");
            else if (result == "movit.mirror" || result == "mirror")
                result = tr("Mirror");
            else if (result == "webvfx")
                result = tr("Overlay HTML");
            else if (result == "movit.sharpen" || result == "frei0r.sharpness")
                result = tr("Sharpen");
            else if (result == "movit.white_balance" || result == "frei0r.colgate")
                result = tr("White Balance");
            else if (result == "sox" && filter->get("use_peak"))
                result = tr("Normalize");
            delete filter;
            return result;
        }
    case Qt::CheckStateRole: {
            Mlt::Filter* filter = filterForRow(index.row());
            QVariant result = Qt::Unchecked;
            if (filter && filter->is_valid() && !filter->get_int("disable"))
                result = Qt::Checked;
            delete filter;
            return result;
        }
        break;
    default:
        break;
    }
    return QVariant();
}

QVariant AttachedFiltersModel::data(const QModelIndex &index, int role) const
{
    if ( !m_producer || !m_producer->is_valid()
        || index.row() >= m_producer->filter_count())
        return QVariant();
    switch (role ) {
    case Qt::DisplayRole: {
            QVariant result;
            const QmlMetadata* meta = m_metaList[index.row()];
            if (meta) {
                result = meta->name();
            } else {
                // Fallback is raw mlt_service name
                Mlt::Filter* filter = getFilter(index.row());
                if (filter && filter->is_valid() && filter->get("mlt_service")) {
                    result = QString::fromUtf8(filter->get("mlt_service"));
                }
                delete filter;
            }
            return result;
        }
    case Qt::CheckStateRole: {
            Mlt::Filter* filter = getFilter(index.row());
            QVariant result = Qt::Unchecked;
            if (filter && filter->is_valid() && !filter->get_int("disable"))
                result = Qt::Checked;
            delete filter;
            return result;
        }
        break;
    case TypeDisplayRole: {
            QVariant result;
            const QmlMetadata* meta = m_metaList[index.row()];
            if (meta && meta->isAudio()) {
                result = tr("Audio");
            } else if (meta && meta->needsGPU()) {
                result = tr("GPU");
            } else {
                result = tr("Video");
            }
            return result;
        }
        break;
    default:
        break;
    }
    return QVariant();
}

void AttachedFiltersModel::add(QmlMetadata* meta)
{
    if (!meta->allowMultiple()) {
        for (int i = 0; i < m_metaList.count(); i++) {
            const QmlMetadata* attachedMeta = m_metaList[i];
            if (attachedMeta && meta->uniqueId() == attachedMeta->uniqueId()) {
                emit duplicateAddFailed(i);
                return;
            }
        }
    }

    int insertIndex = -1;
    int mltIndex = -1;
    Mlt::Filter* filter = new Mlt::Filter(MLT.profile(), meta->mlt_service().toUtf8().constData());
    if (filter->is_valid()) {
        if (!meta->objectName().isEmpty())
            filter->set(kShotcutFilterProperty, meta->objectName().toUtf8().constData());

        // Put the filter after the last filter that is greater than or equal
        // in sort order.
        insertIndex = 0;
        for (int i = m_metaList.count() - 1; i >= 0; i--) {
            if (!sortIsLess(m_metaList[i], meta)) {
                insertIndex = i + 1;
                break;
            }
        }

        // Calculate the MLT index for the new filter.
        if (m_mltIndexMap.count() == 0) {
            mltIndex = m_producer->filter_count();
        } else if (insertIndex == 0) {
            mltIndex = m_mltIndexMap[0];
        } else {
            mltIndex = m_mltIndexMap[insertIndex -1] + 1;
        }

        beginInsertRows(QModelIndex(), insertIndex, insertIndex);
        if (MLT.isSeekable())
            MLT.pause();
        m_event->block();
        m_producer->attach(*filter);
        m_producer->move_filter(m_producer->filter_count() - 1, mltIndex);
        m_event->unblock();
        // Adjust MLT index map for indices that just changed.
        for (int i = 0; i < m_mltIndexMap.count(); i++) {
            if (m_mltIndexMap[i] >= mltIndex) {
                m_mltIndexMap[i] = m_mltIndexMap[i] + 1;
            }
        }
        m_mltIndexMap.insert(insertIndex, mltIndex);
        m_metaList.insert(insertIndex, meta);
        endInsertRows();
        emit changed();
    }
    else qWarning() << "Failed to load filter" << meta->mlt_service();
    delete filter;
}

void AttachedFiltersModel::remove(int row)
{
    Mlt::Filter* filter = filterForRow(row);
    if (filter && filter->is_valid()) {
        beginRemoveRows(QModelIndex(), row, row);
        MLT.pause();
        m_producer->detach(*filter);
        m_rows--;
        endRemoveRows();
        emit changed();
    }
    delete filter;
}

QVariant AttachedFiltersModel::data(const QModelIndex &index, int role) const
{
    if ( !m_producer || !m_producer->is_valid()
        || index.row() >= m_producer->filter_count())
        return QVariant();
    switch (role ) {
    case Qt::DisplayRole: {
            QVariant result;
            Mlt::Filter* filter = filterForRow(index.row());
            if (filter && filter->is_valid()) {
                // Relabel by QML UI
                QmlMetadata* meta = MAIN.filtersDock()->qmlMetadataForService(filter);
                if (meta)
                    result = meta->name();
                // Fallback is raw mlt_service name
                else if (filter->get("mlt_service"))
                    result = QString::fromUtf8(filter->get("mlt_service"));
            }
            // Relabel for widgets UIs
            if (result == "movit.mirror" || result == "mirror")
                result = tr("Mirror");
            delete filter;
            return result;
        }
    case Qt::CheckStateRole: {
            Mlt::Filter* filter = filterForRow(index.row());
            QVariant result = Qt::Unchecked;
            if (filter && filter->is_valid() && !filter->get_int("disable"))
                result = Qt::Checked;
            delete filter;
            return result;
        }
        break;
    default:
        break;
    }
    return QVariant();
}

bool AttachedFiltersModel::setData(const QModelIndex& index, const QVariant& , int role)
{
    if (role == Qt::CheckStateRole) {
        Mlt::Filter* filter = getFilter(index.row());
        if (filter && filter->is_valid()) {
            filter->set("disable", !filter->get_int("disable"));
            emit changed();
            emit dataChanged(createIndex(index.row(), 0), createIndex(index.row(), 0));
        }
        delete filter;
        return true;
    }
    return false;
}

void AttachedFiltersModel::calculateRows()
{
    m_rows =-0;
    if (MLT.isPlaylist()) return;
    if (m_producer && m_producer->is_valid()) {
        int n = m_producer->filter_count();
        while (n--) {
            Mlt::Filter* filter = m_producer->filter(n);
            if (filter && filter->is_valid() && !filter->get_int("_loader"))
                m_rows++;
            delete filter;
        }
    }
}

bool AttachedFiltersModel::setData(const QModelIndex& index, const QVariant& value, int role)
{
    if (role == Qt::CheckStateRole) {
        Mlt::Filter* filter = filterForRow(index.row());
        if (filter && filter->is_valid()) {
            double speed = MLT.producer()->get_speed();
            MLT.pause();
            filter->set("disable", !filter->get_int("disable"));
            MLT.play(speed);
            emit changed();
            emit dataChanged(createIndex(index.row(), 0), createIndex(index.row(), 0));
        }
        delete filter;
        return true;
    }
    return false;
}

Mlt::Filter *AttachedFiltersModel::add(const QString& mlt_service, const QString& shotcutName)
{
    Mlt::Filter* filter = new Mlt::Filter(MLT.profile(), mlt_service.toUtf8().constData());
    if (filter->is_valid()) {
        if (!shotcutName.isEmpty())
            filter->set("shotcut:filter", shotcutName.toUtf8().constData());
        int count = rowCount();
        beginInsertRows(QModelIndex(), count, count);
        MLT.pause();
        m_producer->attach(*filter);
        m_rows++;
        endInsertRows();
        emit changed();
    }
    else qWarning() << "Failed to load filter" << mlt_service;
    return filter;
}

void AttachedFiltersModel::reset(Mlt::Producer* producer)
{
    beginResetModel();
    m_event.reset();
    if (producer && producer->is_valid())
        m_producer.reset(new Mlt::Producer(producer));
    else if (MLT.isClip())
        m_producer.reset(new Mlt::Producer(MLT.producer()));
    else
        m_producer.reset();
    m_metaList.clear();
    m_mltIndexMap.clear();

    if (m_producer && m_producer->is_valid()) {
        Mlt::Event* event = m_producer->listen("service-changed", this, (mlt_listener)AttachedFiltersModel::producerChanged);
        m_event.reset(event);
        int count = m_producer->filter_count();
        for (int i = 0; i < count; i++) {
            Mlt::Filter* filter = m_producer->filter(i);
            if (filter && filter->is_valid() && !filter->get_int("_loader")) {
                QmlMetadata* newMeta = MAIN.filterController()->metadataForService(filter);
                int newIndex = m_metaList.count();
                for (int j = newIndex - 1; j >= 0; j--) {
                    const QmlMetadata* prevMeta = m_metaList[j];
                    if (sortIsLess(prevMeta, newMeta)) {
                        newIndex = j;
                    } else {
                        break;
                    }
                }
                m_metaList.insert(newIndex, newMeta);
                m_mltIndexMap.insert(newIndex, i);
            }
            delete filter;
        }
    }

    endResetModel();
    emit trackTitleChanged();
    emit isProducerSelectedChanged();
    emit readyChanged();
}

int AttachedFiltersModel::indexForRow(int row) const
{
    int result = -1;
    if (m_producer && m_producer->is_valid()) {
        int count = m_producer->filter_count();
        int j = 0;
        for (int i = 0; i < count; i++) {
            Mlt::Filter* filter = m_producer->filter(i);
            if (filter && filter->is_valid() && !filter->get_int("_loader")) {
                if (j == row) {
                    result = i;
                    break;
                }
                j++;
            }
            delete filter;
        }
    }
    return result;
}

bool EffectManager::doAddFilter(EffectsParameterList params, int duration)
{
    // create filter
    QString tag =  params.paramValue(QStringLiteral("tag"));
    QLocale locale;
    ////qDebug() << " / / INSERTING EFFECT: " << tag << ", REGI: " << region;
    QString kfr = params.paramValue(QStringLiteral("keyframes"));
    if (!kfr.isEmpty()) {
        QStringList keyFrames = kfr.split(';', QString::SkipEmptyParts);
        char *starttag = qstrdup(params.paramValue(QStringLiteral("starttag"), QStringLiteral("start")).toUtf8().constData());
        char *endtag = qstrdup(params.paramValue(QStringLiteral("endtag"), QStringLiteral("end")).toUtf8().constData());
        ////qDebug() << "// ADDING KEYFRAME TAGS: " << starttag << ", " << endtag;
        //double max = params.paramValue("max").toDouble();
        double min = params.paramValue(QStringLiteral("min")).toDouble();
        double factor = params.paramValue(QStringLiteral("factor"), QStringLiteral("1")).toDouble();
        double paramOffset = params.paramValue(QStringLiteral("offset"), QStringLiteral("0")).toDouble();
        params.removeParam(QStringLiteral("starttag"));
        params.removeParam(QStringLiteral("endtag"));
        params.removeParam(QStringLiteral("keyframes"));
        params.removeParam(QStringLiteral("min"));
        params.removeParam(QStringLiteral("max"));
        params.removeParam(QStringLiteral("factor"));
        params.removeParam(QStringLiteral("offset"));
        // Special case, only one keyframe, means we want a constant value
        if (keyFrames.count() == 1) {
            Mlt::Filter *filter = new Mlt::Filter(*m_producer.profile(), qstrdup(tag.toUtf8().constData()));
            if (filter && filter->is_valid()) {
                filter->set("kdenlive_id", qstrdup(params.paramValue(QStringLiteral("id")).toUtf8().constData()));
                int x1 = keyFrames.at(0).section('=', 0, 0).toInt();
                double y1 = keyFrames.at(0).section('=', 1, 1).toDouble();
                for (int j = 0; j < params.count(); ++j) {
                    filter->set(params.at(j).name().toUtf8().constData(), params.at(j).value().toUtf8().constData());
                }
                filter->set("in", x1);
                ////qDebug() << "// ADDING KEYFRAME vals: " << min<<" / "<<max<<", "<<y1<<", factor: "<<factor;
                filter->set(starttag, locale.toString(((min + y1) - paramOffset) / factor).toUtf8().data());
                m_producer.attach(*filter);
                delete filter;
            } else {
                delete[] starttag;
                delete[] endtag;
                //qDebug() << "filter is NULL";
                m_producer.unlock();
                return false;
            }
        } else for (int i = 0; i < keyFrames.size() - 1; ++i) {
            Mlt::Filter *filter = new Mlt::Filter(*m_producer.profile(), qstrdup(tag.toUtf8().constData()));
            if (filter && filter->is_valid()) {
                filter->set("kdenlive_id", qstrdup(params.paramValue(QStringLiteral("id")).toUtf8().constData()));
                int x1 = keyFrames.at(i).section('=', 0, 0).toInt();
                double y1 = keyFrames.at(i).section('=', 1, 1).toDouble();
                int x2 = keyFrames.at(i + 1).section('=', 0, 0).toInt();
                double y2 = keyFrames.at(i + 1).section('=', 1, 1).toDouble();
                if (x2 == -1) x2 = duration;
                // non-overlapping sections
                if (i > 0) {
                    y1 += (y2 - y1) / (x2 - x1);
                    ++x1;
                }

                for (int j = 0; j < params.count(); ++j) {
                    filter->set(params.at(j).name().toUtf8().constData(), params.at(j).value().toUtf8().constData());
                }

                filter->set("in", x1);
                filter->set("out", x2);
                ////qDebug() << "// ADDING KEYFRAME vals: " << min<<" / "<<max<<", "<<y1<<", factor: "<<factor;
                filter->set(starttag, locale.toString(((min + y1) - paramOffset) / factor).toUtf8().data());
                filter->set(endtag, locale.toString(((min + y2) - paramOffset) / factor).toUtf8().data());
                m_producer.attach(*filter);
                delete filter;
            } else {
                delete[] starttag;
                delete[] endtag;
                //qDebug() << "filter is NULL";
                m_producer.unlock();
                return false;
            }
        }
        delete[] starttag;
        delete[] endtag;
    } else {
        Mlt::Filter *filter;
        QString prefix;
        filter = new Mlt::Filter(*m_producer.profile(), qstrdup(tag.toUtf8().constData()));
        if (filter && filter->is_valid()) {
            filter->set("kdenlive_id", qstrdup(params.paramValue(QStringLiteral("id")).toUtf8().constData()));
        } else {
            //qDebug() << "filter is NULL";
            m_producer.unlock();
            return false;
        }
        params.removeParam(QStringLiteral("kdenlive_id"));
        if (params.paramValue(QStringLiteral("kdenlive:sync_in_out")) == QLatin1String("1")) {
            // This effect must sync in / out with parent clip
            //params.removeParam(QStringLiteral("_sync_in_out"));
            filter->set_in_and_out(m_producer.get_int("in"), m_producer.get_int("out"));
        }

        for (int j = 0; j < params.count(); ++j) {
//.........这里部分代码省略.........