102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/* This file is part of Clementine.
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Copyright 2010, David Sansome <me@davidsansome.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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// Copyright: (C) 2003 Mark Kretschmann
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// (C) 2004,2005 Max Howell, <max.howell@methylblue.com>
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// License: See COPYING
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#include "enginebase.h"
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#include <QSettings>
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#include <cmath>
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#include "core/timeconstants.h"
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const char* Engine::Base::kSettingsGroup = "Player";
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Engine::Base::Base()
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: volume_(50),
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beginning_nanosec_(0),
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end_nanosec_(0),
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scope_(kScopeSize),
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fadeout_enabled_(true),
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fadeout_duration_nanosec_(2 * kNsecPerSec), // 2s
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crossfade_enabled_(true),
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autocrossfade_enabled_(false),
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crossfade_same_album_(false),
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about_to_end_emitted_(false) {}
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Engine::Base::~Base() {}
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bool Engine::Base::Load(const MediaPlaybackRequest& req, TrackChangeFlags,
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bool force_stop_at_end, quint64 beginning_nanosec,
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qint64 end_nanosec) {
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Q_UNUSED(force_stop_at_end);
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playback_req_ = req;
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beginning_nanosec_ = beginning_nanosec;
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end_nanosec_ = end_nanosec;
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about_to_end_emitted_ = false;
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return true;
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}
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void Engine::Base::SetVolume(uint value) {
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volume_ = value;
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SetVolumeSW(MakeVolumeLogarithmic(value));
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}
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uint Engine::Base::MakeVolumeLogarithmic(uint volume) {
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// We're using a logarithmic function to make the volume ramp more natural.
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return static_cast<uint>(100 -
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100.0 * std::log10((100 - volume) * 0.09 + 1.0));
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}
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void Engine::Base::ReloadSettings() {
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QSettings s;
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s.beginGroup(kSettingsGroup);
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fadeout_enabled_ = s.value("FadeoutEnabled", true).toBool();
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fadeout_duration_nanosec_ =
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s.value("FadeoutDuration", 2000).toLongLong() * kNsecPerMsec;
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crossfade_enabled_ = s.value("CrossfadeEnabled", true).toBool();
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autocrossfade_enabled_ = s.value("AutoCrossfadeEnabled", false).toBool();
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crossfade_same_album_ = !s.value("NoCrossfadeSameAlbum", true).toBool();
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fadeout_pause_enabled_ = s.value("FadeoutPauseEnabled", false).toBool();
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fadeout_pause_duration_nanosec_ =
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s.value("FadeoutPauseDuration", 250).toLongLong() * kNsecPerMsec;
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}
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void Engine::Base::EmitAboutToEnd() {
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if (about_to_end_emitted_) return;
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about_to_end_emitted_ = true;
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emit TrackAboutToEnd();
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}
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int Engine::Base::AddBackgroundStream(const QUrl& url) { return -1; }
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bool Engine::Base::Play(const MediaPlaybackRequest& req, TrackChangeFlags c,
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bool force_stop_at_end, quint64 beginning_nanosec,
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qint64 end_nanosec) {
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if (!Load(req, c, force_stop_at_end, beginning_nanosec, end_nanosec))
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return false;
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return Play(0);
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}
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