132 lines
3.7 KiB
C++
132 lines
3.7 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
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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 <chrono>
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#include <QtGlobal>
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#include <QObject>
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#include <QTimer>
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#include <QString>
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#include "core/shared_ptr.h"
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#include "core/song.h"
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#include "lyricsfetcher.h"
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#include "lyricsfetchersearch.h"
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#include "lyricssearchrequest.h"
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#include "lyricssearchresult.h"
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using namespace std::chrono_literals;
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const int LyricsFetcher::kMaxConcurrentRequests = 5;
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LyricsFetcher::LyricsFetcher(SharedPtr<LyricsProviders> lyrics_providers, QObject *parent)
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: QObject(parent),
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lyrics_providers_(lyrics_providers),
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next_id_(0),
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request_starter_(new QTimer(this)) {
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request_starter_->setInterval(500ms);
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QObject::connect(request_starter_, &QTimer::timeout, this, &LyricsFetcher::StartRequests);
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}
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quint64 LyricsFetcher::Search(const QString &effective_albumartist, const QString &artist, const QString &album, const QString &title) {
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LyricsSearchRequest search_request;
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search_request.albumartist = effective_albumartist;
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search_request.artist = artist;
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search_request.album = Song::AlbumRemoveDiscMisc(album);
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search_request.title = Song::TitleRemoveMisc(title);
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Request request;
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request.id = ++next_id_;
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request.search_request = search_request;
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AddRequest(request);
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return request.id;
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}
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void LyricsFetcher::AddRequest(const Request &request) {
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queued_requests_.enqueue(request);
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if (!request_starter_->isActive()) request_starter_->start();
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if (active_requests_.size() < kMaxConcurrentRequests) StartRequests();
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}
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void LyricsFetcher::Clear() {
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queued_requests_.clear();
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const QList<LyricsFetcherSearch*> searches = active_requests_.values();
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for (LyricsFetcherSearch *search : searches) {
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search->Cancel();
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search->deleteLater();
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}
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active_requests_.clear();
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}
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void LyricsFetcher::StartRequests() {
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if (queued_requests_.isEmpty()) {
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request_starter_->stop();
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return;
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}
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while (!queued_requests_.isEmpty() && active_requests_.size() < kMaxConcurrentRequests) {
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Request request = queued_requests_.dequeue();
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LyricsFetcherSearch *search = new LyricsFetcherSearch(request.id, request.search_request, this);
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active_requests_.insert(request.id, search);
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QObject::connect(search, &LyricsFetcherSearch::SearchFinished, this, &LyricsFetcher::SingleSearchFinished);
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QObject::connect(search, &LyricsFetcherSearch::LyricsFetched, this, &LyricsFetcher::SingleLyricsFetched);
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search->Start(lyrics_providers_);
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}
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}
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void LyricsFetcher::SingleSearchFinished(const quint64 request_id, const LyricsSearchResults &results) {
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if (!active_requests_.contains(request_id)) return;
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LyricsFetcherSearch *search = active_requests_.take(request_id);
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search->deleteLater();
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emit SearchFinished(request_id, results);
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}
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void LyricsFetcher::SingleLyricsFetched(const quint64 request_id, const QString &provider, const QString &lyrics) {
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if (!active_requests_.contains(request_id)) return;
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LyricsFetcherSearch *search = active_requests_.take(request_id);
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search->deleteLater();
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emit LyricsFetched(request_id, provider, lyrics);
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}
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