104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
/* This file is part of Clementine.
|
|
Copyright 2010, David Sansome <me@davidsansome.com>
|
|
|
|
Clementine is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Clementine is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
//Copyright: (C) 2003 Mark Kretschmann
|
|
// (C) 2004,2005 Max Howell, <max.howell@methylblue.com>
|
|
//License: See COPYING
|
|
|
|
#include "enginebase.h"
|
|
#include "core/timeconstants.h"
|
|
|
|
#include <cmath>
|
|
|
|
#include <QSettings>
|
|
|
|
const char* Engine::Base::kSettingsGroup = "Player";
|
|
|
|
Engine::Base::Base()
|
|
: volume_(50),
|
|
beginning_nanosec_(0),
|
|
end_nanosec_(0),
|
|
scope_(kScopeSize),
|
|
fadeout_enabled_(true),
|
|
fadeout_duration_nanosec_(2 * kNsecPerSec), // 2s
|
|
crossfade_enabled_(true),
|
|
autocrossfade_enabled_(false),
|
|
crossfade_same_album_(false),
|
|
next_background_stream_id_(0),
|
|
about_to_end_emitted_(false)
|
|
{
|
|
}
|
|
|
|
Engine::Base::~Base() {
|
|
}
|
|
|
|
bool Engine::Base::Load(const QUrl& url, TrackChangeFlags,
|
|
bool force_stop_at_end,
|
|
quint64 beginning_nanosec, qint64 end_nanosec) {
|
|
Q_UNUSED(force_stop_at_end);
|
|
|
|
url_ = url;
|
|
beginning_nanosec_ = beginning_nanosec;
|
|
end_nanosec_ = end_nanosec;
|
|
|
|
about_to_end_emitted_ = false;
|
|
return true;
|
|
}
|
|
|
|
void Engine::Base::SetVolume(uint value) {
|
|
volume_ = value;
|
|
|
|
SetVolumeSW(MakeVolumeLogarithmic(value));
|
|
}
|
|
|
|
uint Engine::Base::MakeVolumeLogarithmic(uint volume) {
|
|
// We're using a logarithmic function to make the volume ramp more natural.
|
|
return static_cast<uint>( 100 - 100.0 * std::log10( ( 100 - volume ) * 0.09 + 1.0 ) );
|
|
}
|
|
|
|
void Engine::Base::ReloadSettings() {
|
|
QSettings s;
|
|
s.beginGroup(kSettingsGroup);
|
|
|
|
fadeout_enabled_ = s.value("FadeoutEnabled", true).toBool();
|
|
fadeout_duration_nanosec_ = s.value("FadeoutDuration", 2000).toLongLong() * kNsecPerMsec;
|
|
crossfade_enabled_ = s.value("CrossfadeEnabled", true).toBool();
|
|
autocrossfade_enabled_ = s.value("AutoCrossfadeEnabled", false).toBool();
|
|
crossfade_same_album_ = !s.value("NoCrossfadeSameAlbum", true).toBool();
|
|
}
|
|
|
|
void Engine::Base::EmitAboutToEnd() {
|
|
if (about_to_end_emitted_)
|
|
return;
|
|
|
|
about_to_end_emitted_ = true;
|
|
emit TrackAboutToEnd();
|
|
}
|
|
|
|
int Engine::Base::AddBackgroundStream(const QUrl& url) {
|
|
return -1;
|
|
}
|
|
|
|
bool Engine::Base::Play(const QUrl& u, TrackChangeFlags c,
|
|
bool force_stop_at_end,
|
|
quint64 beginning_nanosec, qint64 end_nanosec) {
|
|
if (!Load(u, c, force_stop_at_end, beginning_nanosec, end_nanosec))
|
|
return false;
|
|
|
|
return Play(0);
|
|
}
|