git.maemo.org Git - someplayer/blob - src/player/player.cpp

   1 /*
   2  * SomePlayer - An alternate music player for Maemo 5
   3  * Copyright (C) 2010 Nikolay (somebody) Tischenko <niktischenko@gmail.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  */
  19
  20 #include "player.h"
  21 #include <phonon/MediaSource>
  22 #include <phonon/Effect>
  23 #include <phonon/BackendCapabilities>
  24 #include <phonon/EffectParameter>
  25 #include "../config.h"
  26 #include <QTime>
  27 #include <QTimer>
  28
  29 using namespace SomePlayer::Playback;
  30 using namespace SomePlayer::DataObjects;
  31 using namespace SomePlayer::Storage;
  32
  33 inline QList<Track> __sub(QList<Track> one, QList<Track> two, Track three) {
  34         QList<Track> result;
  35         foreach (Track t, one) {
  36                 if (!two.contains(t) && !(t == three)) {
  37                         result.append(t);
  38                 }
  39         }
  40         return result;
  41 }
  42
  43 Player::Player(QObject *parent) :
  44     QObject(parent)
  45 {
  46         _awaiting_seek = false;
  47         _player = new Phonon::MediaObject(this);
  48         _output = new Phonon::AudioOutput(Phonon::MusicCategory, this);
  49         _player->setTickInterval(1000);
  50         _equalizer = NULL;
  51         _equalizer_enabled = false;
  52         connect(_player, SIGNAL(stateChanged(Phonon::State,Phonon::State)), this, SLOT(_stateChanged(Phonon::State,Phonon::State)));
  53         connect(_player, SIGNAL(tick(qint64)), this, SLOT(_tick(qint64)));
  54         connect(_player, SIGNAL(finished()), this, SLOT(next()));
  55         _path = Phonon::createPath(_player, _output);
  56         QList<Phonon::EffectDescription> effects = Phonon::BackendCapabilities::availableAudioEffects();
  57         foreach (Phonon::EffectDescription desc, effects) {
  58                 if (desc.name() == "equalizer-10bands") {
  59                         _equalizer = new Phonon::Effect(desc, this);
  60                         Config config;
  61                         if (config.equalizerEnabled()) {
  62                                 for (int i = 0; i < 10; i++) {
  63                                         QVariant var = config.getEqualizerValue(QString("band%1").arg(i));
  64                                         setEqualizerValue(i, var.toDouble());
  65                                 }
  66                                 enableEqualizer();
  67                         }
  68                 }
  69         }
  70         int seed = QTime::currentTime().msec();
  71         qsrand(seed);
  72         _random = _config.getValue("playback/random").toBool();
  73         _repeat = (RepeatRule) _config.getValue("playback/repeat").toInt();
  74 }
  75
  76 void Player::setTrackId(int id) {
  77         id = id < 0 ? 0 : id;
  78         id = id >= _playlist.tracks().size() ? _playlist.tracks().size()-1 : id;
  79         _to_history(_track);
  80         _track = _playlist.tracks().at(id);
  81         _set_source();
  82         play();
  83 }
  84
  85 void Player::toggle() {
  86         if (_state == PLAYER_PLAYING) { // pause
  87                 _player->pause();
  88                 _state = PLAYER_PAUSED;
  89                 emit stateChanged(_state);
  90         } else { //play
  91                 play();
  92         }
  93 }
  94
  95 void Player::stop() {
  96         if (_state == PLAYER_STOPPED) {
  97                 return;
  98         }
  99         LastPlayed lp;
 100         lp.position = _player->currentTime() / 1000 - 2;
 101         lp.position = lp.position < 0 ? 0 : lp.position;
 102         lp.trackId = _playlist.tracks().indexOf(_track);
 103         lp.trackId = lp.trackId < 0 ? 0 : lp.trackId;
 104         emit saveLastPlayed(lp);
 105         _player->stop();
 106         _state = PLAYER_STOPPED;
 107         emit stateChanged(_state);
 108 }
 109
 110 void Player::next() {
 111         int count = _playlist.tracks().count();
 112         if (count == 0) {
 113                 stop(); // empty playlist
 114                 return;
 115         }
 116         if (_repeat == REPEAT_ONE) {
 117                 _set_source();
 118                 play();
 119                 return;
 120         }
 121         Track _new;
 122         while (!_queue.isEmpty()) {
 123                 _new = _queue.takeFirst();
 124                 if (_playlist.tracks().contains(_new)) {
 125                         _to_history(_track);
 126                         _track = _new;
 127                         _set_source();
 128                         play();
 129                         return;
 130                 }
 131         }
 132         if (!_random) {
 133                 int pos = _playlist.tracks().indexOf(_track) + 1;
 134                 if (pos >= _playlist.tracks().count()) {
 135                         if (_repeat == REPEAT_NO) {
 136                                 stop();
 137                                 return;
 138                         }
 139                         pos %= _playlist.tracks().count();
 140                 }
 141                 _to_history(_track);
 142                 _track = _playlist.tracks().at(pos);
 143                 _set_source();
 144                 play();
 145                 return;
 146         }
 147         // random
 148         QList<Track> sub = __sub(_playlist.tracks(), _history, _track);
 149         int size = sub.count();
 150         if (size == 0) {
 151                 _to_history(_track);
 152                 _set_source();
 153                 play();
 154                 return;
 155         }
 156         int pos = qrand() % size;
 157         _to_history(_track);
 158         _track = sub.at(pos);
 159         _set_source();
 160         play();
 161 }
 162
 163 void Player::_set_source() {
 164         _player->setCurrentSource(Phonon::MediaSource(_track.source()));
 165         emit trackChanged(_track);
 166 }
 167
 168 void Player::prev() {
 169         if (_history.isEmpty()) {
 170                 return;
 171         }
 172         _queue.push_front(_track);
 173         _track = _history.takeFirst();
 174         _set_source();
 175         play();
 176 }
 177
 178 void Player::_stateChanged(Phonon::State newState, Phonon::State /*oldState*/) {
 179         switch (newState) {
 180         case Phonon::PlayingState:
 181                 _state = PLAYER_PLAYING;
 182                 emit stateChanged(_state);
 183                 if (_awaiting_seek) {
 184                         _awaiting_seek = false;
 185                         seek(_awaiting_seek_pos);
 186                 }
 187                 break;
 188         case Phonon::ErrorState:
 189                 play(); // force
 190                 break;
 191         default:
 192                 break;
 193         }
 194 }
 195
 196 void Player::_tick(qint64 ticks) {
 197         int done = ticks/1000;
 198         int all = _track.metadata().length();
 199         emit tick(done, all);
 200         if (done+2 == all) {
 201                 _track.setCount(_track.count()+1);
 202                 emit trackDone(_track);
 203         }
 204 }
 205
 206 void Player::setPlaylist(Playlist playlist) {
 207         _playlist = playlist;
 208         _truncate_history();
 209 }
 210
 211 void Player::seek(int s) {
 212         _player->seek(s*1000);
 213         if (s >= _track.metadata().length()) {
 214                 next();
 215         }
 216 }
 217
 218 void Player::play() {
 219         if (_playlist.tracks().isEmpty())
 220                 return;
 221         if (_track.source().isEmpty()) {
 222                 emit startPlaylist();
 223                 return;
 224         }
 225         _state = PLAYER_PLAYING;
 226         emit stateChanged(_state);
 227         _player->play();
 228 }
 229
 230 void Player::enqueue(int id) {
 231         _queue.push_back(_playlist.tracks().at(id));
 232 }
 233
 234 void Player::toggleRandom() {
 235         _random = !_random;
 236         _config.setValue("playback/random", _random);
 237 }
 238
 239 void Player::toggleRepeat() {
 240         if (_repeat == REPEAT_NO) {
 241                 _repeat = REPEAT_ALL;
 242         } else if (_repeat == REPEAT_ALL) {
 243                 _repeat = REPEAT_ONE;
 244         } else if (_repeat == REPEAT_ONE) {
 245                 _repeat = REPEAT_NO;
 246         }
 247         _config.setValue("playback/repeat", _repeat);
 248 }
 249
 250 void Player::equalizerValue(int band, double *val) {
 251         if (_equalizer == NULL) {
 252                 *val = 0;
 253                 return;
 254         }
 255         if (band < 0 || band > 9) {
 256                 *val = -24;
 257                 return;
 258         }
 259         if (_equalizer_enabled) {
 260                 QList<Phonon::EffectParameter> plist = _equalizer->parameters();
 261                 QVariant var = _equalizer->parameterValue(plist[band]);
 262                 *val = var.toDouble();
 263         }
 264 }
 265
 266 void Player::enableEqualizer() {
 267         if (_equalizer == NULL)
 268                 return;
 269         _equalizer_enabled = true;
 270         _path.insertEffect(_equalizer);
 271         Config config;
 272         config.setEqualizerEnabled(true);
 273 }
 274
 275 void Player::disableEqualizer() {
 276         if (_equalizer == NULL)
 277                 return;
 278         _equalizer_enabled = false;
 279         _path.removeEffect(_equalizer);
 280         Config config;
 281         config.setEqualizerEnabled(false);
 282 }
 283
 284 void Player::setEqualizerValue(int band, double value) {
 285         if (_equalizer == NULL)
 286                 return;
 287         if (band < 0 || band > 9 || value < -24 || value > 12) {
 288                 return;
 289         }
 290         QList<Phonon::EffectParameter> plist = _equalizer->parameters();
 291         _equalizer->setParameterValue(plist[band], QVariant::fromValue(value));
 292         Config config;
 293         config.setEqualizerValue(QString("band%1").arg(band), value);
 294 }
 295
 296 QString Player::artist() {
 297         return _track.metadata().artist();
 298 }
 299
 300 QString Player::album() {
 301         return _track.metadata().album();
 302 }
 303
 304 QString Player::title() {
 305         return _track.metadata().title();
 306 }
 307
 308 Track Player::current() {
 309         return _track;
 310 }
 311
 312 void Player::pause() {
 313         if (_state == PLAYER_PLAYING) {
 314                 _player->pause();
 315                 _state = PLAYER_PAUSED;
 316                 emit stateChanged(_state);
 317         }
 318 }
 319
 320 void Player::playIfPaused() {
 321         if (_state == PLAYER_PAUSED) {
 322                 play();
 323         }
 324 }
 325
 326 void Player::_to_history(Track t) {
 327         if (!t.source().isEmpty()) {
 328                 _history.push_front(t);
 329         }
 330         _truncate_history();
 331         foreach (Track t, _history) {
 332         }
 333 }
 334
 335 void Player::_truncate_history() {
 336         while (_history.size() > 50 || _history.size() > _playlist.tracks().size()/2) {
 337                 _history.removeLast();
 338         }
 339 }
 340
 341 Player::~Player() {
 342         stop();
 343 }