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701 lines
18 KiB
701 lines
18 KiB
/***************************************************************************
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begin : Sat Feb 14 2004
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copyright : (C) 2004 by Scott Wheeler
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email : wheeler@kde.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program 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 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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/**
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* Note to those who work here. The preprocessor variables HAVE_ARTS and HAVE_GSTREAMER
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* are ::ALWAYS DEFINED::. You can't use #ifdef to see if they're present, you should just
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* use #if.
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*
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* However, HAVE_AKODE is #define'd if present, and undefined if not present.
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* - mpyne
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*/
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#include <kdebug.h>
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#include <klocale.h>
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#include <tqslider.h>
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#include <tqtimer.h>
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#include <math.h>
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#include "artsplayer.h"
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#include "akodeplayer.h"
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#include "gstreamerplayer.h"
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#include "playermanager.h"
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#include "playlistinterface.h"
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#include "slideraction.h"
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#include "statuslabel.h"
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#include "actioncollection.h"
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#include "collectionlist.h"
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#include "coverinfo.h"
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#include "tag.h"
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#include "config.h"
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using namespace ActionCollection;
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enum PlayerManagerStatus { StatusStopped = -1, StatusPaused = 1, StatusPlaying = 2 };
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////////////////////////////////////////////////////////////////////////////////
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// helper functions
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////////////////////////////////////////////////////////////////////////////////
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enum SoundSystem { ArtsBackend = 0, GStreamerBackend = 1, AkodeBackend = 2 };
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static Player *createPlayer(int system = ArtsBackend)
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{
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Player *p = 0;
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switch(system) {
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#ifdef HAVE_AKODE
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case AkodeBackend:
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p = new aKodePlayer;
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break;
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#endif
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#if HAVE_ARTS
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case ArtsBackend:
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p = new ArtsPlayer;
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break;
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#endif
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#if HAVE_GSTREAMER
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case GStreamerBackend:
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p = new GStreamerPlayer;
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break;
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#endif
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default:
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#if HAVE_ARTS
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p = new ArtsPlayer;
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#elif HAVE_GSTREAMER
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p = new GStreamerPlayer;
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#else
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p = new aKodePlayer;
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#endif
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break;
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}
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return p;
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}
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////////////////////////////////////////////////////////////////////////////////
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// protected members
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////////////////////////////////////////////////////////////////////////////////
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PlayerManager::PlayerManager() :
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Player(),
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m_sliderAction(0),
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m_playlistInterface(0),
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m_statusLabel(0),
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m_player(0),
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m_timer(0),
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m_noSeek(false),
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m_muted(false),
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m_setup(false)
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{
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// This class is the first thing constructed during program startup, and
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// therefore has no access to the widgets needed by the setup() method.
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// Since the setup() method will be called indirectly by the player() method
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// later, just disable it here. -- mpyne
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// setup();
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}
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PlayerManager::~PlayerManager()
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{
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delete m_player;
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}
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////////////////////////////////////////////////////////////////////////////////
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// public members
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////////////////////////////////////////////////////////////////////////////////
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PlayerManager *PlayerManager::instance() // static
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{
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static PlayerManager manager;
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return &manager;
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}
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bool PlayerManager::playing() const
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{
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if(!player())
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return false;
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return player()->playing();
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}
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bool PlayerManager::paused() const
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{
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if(!player())
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return false;
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return player()->paused();
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}
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float PlayerManager::volume() const
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{
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if(!player())
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return 0;
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return player()->volume();
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}
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int PlayerManager::status() const
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{
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if(!player())
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return StatusStopped;
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if(player()->paused())
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return StatusPaused;
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if(player()->playing())
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return StatusPlaying;
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return 0;
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}
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int PlayerManager::totalTime() const
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{
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if(!player())
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return 0;
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return player()->totalTime();
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}
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int PlayerManager::currentTime() const
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{
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if(!player())
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return 0;
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return player()->currentTime();
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}
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int PlayerManager::position() const
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{
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if(!player())
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return 0;
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return player()->position();
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}
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TQStringList PlayerManager::trackProperties()
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{
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return FileHandle::properties();
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}
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TQString PlayerManager::trackProperty(const TQString &property) const
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{
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if(!playing() && !paused())
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return TQString();
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return m_file.property(property);
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}
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TQPixmap PlayerManager::trackCover(const TQString &size) const
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{
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if(!playing() && !paused())
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return TQPixmap();
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if(size.lower() == "small")
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return m_file.coverInfo()->pixmap(CoverInfo::Thumbnail);
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if(size.lower() == "large")
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return m_file.coverInfo()->pixmap(CoverInfo::FullSize);
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return TQPixmap();
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}
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FileHandle PlayerManager::playingFile() const
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{
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return m_file;
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}
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TQString PlayerManager::playingString() const
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{
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if(!playing())
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return TQString();
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TQString str = m_file.tag()->artist() + " - " + m_file.tag()->title();
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if(m_file.tag()->artist().isEmpty())
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str = m_file.tag()->title();
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return str;
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}
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void PlayerManager::setPlaylistInterface(PlaylistInterface *interface)
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{
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m_playlistInterface = interface;
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}
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void PlayerManager::setStatusLabel(StatusLabel *label)
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{
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m_statusLabel = label;
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}
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KSelectAction *PlayerManager::playerSelectAction(TQObject *parent) // static
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{
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KSelectAction *action = 0;
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action = new KSelectAction(i18n("&Output To"), 0, parent, "outputSelect");
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TQStringList l;
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#if HAVE_ARTS
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l << i18n("aRts");
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#endif
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#if HAVE_GSTREAMER
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l << i18n("GStreamer");
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#endif
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#ifdef HAVE_AKODE
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l << i18n("aKode");
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#endif
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if(l.isEmpty()) {
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kdError(65432) << "Your JuK seems to have no output backend possibilities.\n";
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l << i18n("aKode"); // Looks like akode is the default backend.
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}
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action->setItems(l);
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return action;
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}
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////////////////////////////////////////////////////////////////////////////////
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// public slots
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////////////////////////////////////////////////////////////////////////////////
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void PlayerManager::play(const FileHandle &file)
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{
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if(!player() || !m_playlistInterface)
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return;
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if(file.isNull()) {
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if(player()->paused())
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player()->play();
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else if(player()->playing()) {
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if(m_sliderAction->trackPositionSlider())
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m_sliderAction->trackPositionSlider()->setValue(0);
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player()->seekPosition(0);
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}
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else {
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m_playlistInterface->playNext();
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m_file = m_playlistInterface->currentFile();
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if(!m_file.isNull())
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player()->play(m_file);
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}
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}
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else {
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m_file = file;
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player()->play(file);
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}
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// Make sure that the player() actually starts before doing anything.
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if(!player()->playing()) {
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kdWarning(65432) << "Unable to play " << file.absFilePath() << endl;
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stop();
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return;
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}
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action("pause")->setEnabled(true);
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action("stop")->setEnabled(true);
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action("forward")->setEnabled(true);
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if(action<KToggleAction>("albumRandomPlay")->isChecked())
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action("forwardAlbum")->setEnabled(true);
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action("back")->setEnabled(true);
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if(m_sliderAction->trackPositionSlider())
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m_sliderAction->trackPositionSlider()->setEnabled(true);
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m_timer->start(m_pollInterval);
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emit signalPlay();
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}
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void PlayerManager::play(const TQString &file)
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{
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CollectionListItem *item = CollectionList::instance()->lookup(file);
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if(item) {
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Playlist::setPlaying(item);
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play(item->file());
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}
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}
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void PlayerManager::play()
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{
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play(FileHandle::null());
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}
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void PlayerManager::pause()
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{
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if(!player())
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return;
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if(player()->paused()) {
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play();
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return;
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}
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m_timer->stop();
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action("pause")->setEnabled(false);
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player()->pause();
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emit signalPause();
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}
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void PlayerManager::stop()
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{
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if(!player() || !m_playlistInterface)
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return;
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m_timer->stop();
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action("pause")->setEnabled(false);
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action("stop")->setEnabled(false);
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action("back")->setEnabled(false);
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action("forward")->setEnabled(false);
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action("forwardAlbum")->setEnabled(false);
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if(m_sliderAction->trackPositionSlider()) {
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m_sliderAction->trackPositionSlider()->setValue(0);
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m_sliderAction->trackPositionSlider()->setEnabled(false);
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}
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player()->stop();
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m_playlistInterface->stop();
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m_file = FileHandle::null();
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emit signalStop();
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}
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void PlayerManager::setVolume(float volume)
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{
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if(!player())
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return;
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player()->setVolume(volume);
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}
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void PlayerManager::seek(int seekTime)
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{
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if(!player())
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return;
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player()->seek(seekTime);
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}
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void PlayerManager::seekPosition(int position)
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{
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if(!player())
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return;
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if(!player()->playing() || m_noSeek)
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return;
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slotUpdateTime(position);
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player()->seekPosition(position);
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if(m_sliderAction->trackPositionSlider())
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m_sliderAction->trackPositionSlider()->setValue(position);
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}
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void PlayerManager::seekForward()
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{
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seekPosition(kMin(SliderAction::maxPosition, position() + 10));
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}
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void PlayerManager::seekBack()
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{
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seekPosition(kMax(SliderAction::minPosition, position() - 10));
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}
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void PlayerManager::playPause()
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{
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playing() ? action("pause")->activate() : action("play")->activate();
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}
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void PlayerManager::forward()
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{
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m_playlistInterface->playNext();
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FileHandle file = m_playlistInterface->currentFile();
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if(!file.isNull())
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play(file);
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else
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stop();
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}
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void PlayerManager::back()
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{
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m_playlistInterface->playPrevious();
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FileHandle file = m_playlistInterface->currentFile();
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if(!file.isNull())
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play(file);
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else
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stop();
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}
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void PlayerManager::forwardAlbum()
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{
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m_playlistInterface->playNextAlbum();
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FileHandle file = m_playlistInterface->currentFile();
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if(!file.isNull())
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play(file);
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else
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stop();
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}
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void PlayerManager::volumeUp()
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{
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if(!player() || !m_sliderAction || !m_sliderAction->volumeSlider())
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return;
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int volume = m_sliderAction->volumeSlider()->volume() +
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m_sliderAction->volumeSlider()->maxValue() / 25; // 4% up
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slotSetVolume(volume);
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m_sliderAction->volumeSlider()->setVolume(volume);
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}
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void PlayerManager::volumeDown()
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{
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if(!player() || !m_sliderAction || !m_sliderAction->volumeSlider())
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return;
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int volume = m_sliderAction->volumeSlider()->value() -
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m_sliderAction->volumeSlider()->maxValue() / 25; // 4% down
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slotSetVolume(volume);
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m_sliderAction->volumeSlider()->setVolume(volume);
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}
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void PlayerManager::mute()
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{
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if(!player() || !m_sliderAction || !m_sliderAction->volumeSlider())
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return;
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slotSetVolume(m_muted ? m_sliderAction->volumeSlider()->value() : 0);
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m_muted = !m_muted;
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}
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////////////////////////////////////////////////////////////////////////////////
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// private slots
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////////////////////////////////////////////////////////////////////////////////
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void PlayerManager::slotPollPlay()
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{
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if(!player() || !m_playlistInterface)
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return;
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m_noSeek = true;
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if(!player()->playing()) {
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m_timer->stop();
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m_playlistInterface->playNext();
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FileHandle nextFile = m_playlistInterface->currentFile();
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if(!nextFile.isNull())
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play(nextFile);
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else
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stop();
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}
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else if(!m_sliderAction->dragging()) {
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if(m_sliderAction->trackPositionSlider())
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m_sliderAction->trackPositionSlider()->setValue(player()->position());
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if(m_statusLabel) {
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m_statusLabel->setItemTotalTime(player()->totalTime());
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m_statusLabel->setItemCurrentTime(player()->currentTime());
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}
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}
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// This call is done because when the user adds the slider to the toolbar
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// while playback is occuring the volume slider generally defaults to 0,
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// and doesn't get updated to the correct volume. It might be better to
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// have the SliderAction class fill in the correct volume, but I'm trying
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// to avoid having it depend on PlayerManager since it may not be
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// constructed in time during startup. -mpyne
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if(!m_sliderAction->volumeDragging() && m_sliderAction->volumeSlider())
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{
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int maxV = m_sliderAction->volumeSlider()->maxValue();
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float v = sqrt(sqrt(volume())); // Cancel out exponential scaling
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m_sliderAction->volumeSlider()->blockSignals(true);
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m_sliderAction->volumeSlider()->setVolume((int)((v) * maxV));
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m_sliderAction->volumeSlider()->blockSignals(false);
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}
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// Ok, this is weird stuff, but it works pretty well. Ordinarily we don't
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// need to check up on our playing time very often, but in the span of the
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// last interval, we want to check a lot -- to figure out that we've hit the
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// end of the song as soon as possible.
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if(player()->playing() &&
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player()->totalTime() > 0 &&
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float(player()->totalTime() - player()->currentTime()) < m_pollInterval * 2)
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{
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m_timer->changeInterval(50);
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}
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m_noSeek = false;
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}
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void PlayerManager::slotSetOutput(const TQString &system)
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{
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stop();
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setOutput(system);
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setup();
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}
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void PlayerManager::setOutput(const TQString &system)
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{
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delete m_player;
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if(system == i18n("aRts"))
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m_player = createPlayer(ArtsBackend);
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else if(system == i18n("GStreamer"))
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m_player = createPlayer(GStreamerBackend);
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else if(system == i18n("aKode"))
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m_player = createPlayer(AkodeBackend);
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}
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void PlayerManager::slotSetVolume(int volume)
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{
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float scaledVolume;
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if(m_sliderAction->volumeSlider())
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scaledVolume = float(volume) / m_sliderAction->volumeSlider()->maxValue();
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else {
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scaledVolume = float(volume) / 100.0; // Hopefully this is accurate
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scaledVolume = kMin(1.0f, scaledVolume);
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}
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// Perform exponential scaling to counteract the fact that humans perceive
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// volume changes logarithmically.
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scaledVolume *= scaledVolume;
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scaledVolume *= scaledVolume;
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setVolume(scaledVolume); // scaledVolume ^ 4
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}
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void PlayerManager::slotUpdateTime(int position)
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{
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if(!m_statusLabel)
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return;
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float positionFraction = float(position) / SliderAction::maxPosition;
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float totalTime = float(player()->totalTime());
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int seekTime = int(positionFraction * totalTime + 0.5); // "+0.5" for rounding
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m_statusLabel->setItemCurrentTime(seekTime);
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}
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////////////////////////////////////////////////////////////////////////////////
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// private members
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////////////////////////////////////////////////////////////////////////////////
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Player *PlayerManager::player() const
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{
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if(!m_player)
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instance()->setup();
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return m_player;
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}
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void PlayerManager::setup()
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{
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// All of the actions required by this class should be listed here.
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if(!action("pause") ||
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!action("stop") ||
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!action("back") ||
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!action("forwardAlbum") ||
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!action("forward") ||
|
|
!action("trackPositionAction"))
|
|
{
|
|
kdWarning(65432) << k_funcinfo << "Could not find all of the required actions." << endl;
|
|
return;
|
|
}
|
|
|
|
if(m_setup)
|
|
return;
|
|
m_setup = true;
|
|
|
|
// initialize action states
|
|
|
|
action("pause")->setEnabled(false);
|
|
action("stop")->setEnabled(false);
|
|
action("back")->setEnabled(false);
|
|
action("forward")->setEnabled(false);
|
|
action("forwardAlbum")->setEnabled(false);
|
|
|
|
// setup sliders
|
|
|
|
m_sliderAction = action<SliderAction>("trackPositionAction");
|
|
|
|
connect(m_sliderAction, TQT_SIGNAL(signalPositionChanged(int)),
|
|
this, TQT_SLOT(seekPosition(int)));
|
|
connect(m_sliderAction->trackPositionSlider(), TQT_SIGNAL(valueChanged(int)),
|
|
this, TQT_SLOT(slotUpdateTime(int)));
|
|
connect(m_sliderAction, TQT_SIGNAL(signalVolumeChanged(int)),
|
|
this, TQT_SLOT(slotSetVolume(int)));
|
|
|
|
// Call this method manually to avoid warnings.
|
|
|
|
KAction *outputAction = actions()->action("outputSelect");
|
|
|
|
if(outputAction) {
|
|
setOutput(static_cast<KSelectAction *>(outputAction)->currentText());
|
|
connect(outputAction, TQT_SIGNAL(activated(const TQString &)), this, TQT_SLOT(slotSetOutput(const TQString &)));
|
|
}
|
|
else
|
|
m_player = createPlayer();
|
|
|
|
float volume;
|
|
|
|
if(m_sliderAction->volumeSlider()) {
|
|
volume =
|
|
float(m_sliderAction->volumeSlider()->volume()) /
|
|
float(m_sliderAction->volumeSlider()->maxValue());
|
|
}
|
|
else
|
|
volume = 1; // Assume user wants full volume
|
|
|
|
m_player->setVolume(volume);
|
|
|
|
m_timer = new TQTimer(this, "play timer");
|
|
connect(m_timer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotPollPlay()));
|
|
}
|
|
|
|
TQString PlayerManager::randomPlayMode() const
|
|
{
|
|
if(action<KToggleAction>("randomPlay")->isChecked())
|
|
return "Random";
|
|
if(action<KToggleAction>("albumRandomPlay")->isChecked())
|
|
return "AlbumRandom";
|
|
return "NoRandom";
|
|
}
|
|
|
|
void PlayerManager::setRandomPlayMode(const TQString &randomMode)
|
|
{
|
|
if(randomMode.lower() == "random")
|
|
action<KToggleAction>("randomPlay")->setChecked(true);
|
|
if(randomMode.lower() == "albumrandom")
|
|
action<KToggleAction>("albumRandomPlay")->setChecked(true);
|
|
if(randomMode.lower() == "norandom")
|
|
action<KToggleAction>("disableRandomPlay")->setChecked(true);
|
|
}
|
|
|
|
#include "playermanager.moc"
|
|
|
|
// vim: set et ts=4 sw=4:
|