106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <QIODevice>
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#include <QDataStream>
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#include <QByteArray>
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#include <QString>
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#include "playlistquerygenerator.h"
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#include "collection/collectionbackend.h"
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PlaylistQueryGenerator::PlaylistQueryGenerator(QObject *parent) : PlaylistGenerator(parent), dynamic_(false), current_pos_(0) {}
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PlaylistQueryGenerator::PlaylistQueryGenerator(const QString &name, const SmartPlaylistSearch &search, const bool dynamic, QObject *parent)
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: PlaylistGenerator(parent),
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search_(search),
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dynamic_(dynamic),
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current_pos_(0) {
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set_name(name);
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}
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void PlaylistQueryGenerator::Load(const SmartPlaylistSearch &search) {
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search_ = search;
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dynamic_ = false;
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current_pos_ = 0;
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}
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void PlaylistQueryGenerator::Load(const QByteArray &data) {
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QDataStream s(data);
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s >> search_;
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s >> dynamic_;
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}
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QByteArray PlaylistQueryGenerator::Save() const {
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QByteArray ret;
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QDataStream s(&ret, QIODevice::WriteOnly);
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s << search_;
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s << dynamic_;
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return ret;
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}
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PlaylistItemPtrList PlaylistQueryGenerator::Generate() {
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previous_ids_.clear();
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current_pos_ = 0;
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return GenerateMore(0);
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}
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PlaylistItemPtrList PlaylistQueryGenerator::GenerateMore(const int count) {
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SmartPlaylistSearch search_copy = search_;
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search_copy.id_not_in_ = previous_ids_;
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if (count > 0) {
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search_copy.limit_ = count;
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}
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if (search_copy.sort_type_ != SmartPlaylistSearch::SortType::Random) {
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search_copy.first_item_ = current_pos_;
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current_pos_ += search_copy.limit_;
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}
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const SongList songs = collection_backend_->SmartPlaylistsFindSongs(search_copy);
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PlaylistItemPtrList items;
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items.reserve(songs.count());
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for (const Song &song : songs) {
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items << PlaylistItem::NewFromSong(song);
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previous_ids_ << song.id();
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if (previous_ids_.count() > GetDynamicFuture() + GetDynamicHistory()) {
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previous_ids_.removeFirst();
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}
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}
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return items;
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}
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