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 int Randomizer::next() {
  34         int res = 0;
  35         if (_rand.count() == 0) {
  36                 _shuffle();
  37                 res = next();
  38         } else {
  39                 res = _rand.takeFirst();
  40         }
  41         return res;
  42 }
  43
  44 void Randomizer::setPlaylist(QList<int> pl) {
  45         _playlist = pl;
  46         _shuffle();
  47         _last = -1;
  48 }
  49
  50 void Randomizer::_shuffle() {
  51         _rand.clear();
  52         // Fisher-Yates algorithm:
  53         _rand = _playlist;
  54         int cnt = _playlist.count();
  55         int j = 0;
  56         int tmp = 0;
  57         for (int i = cnt-1; i > 0; i--) {
  58                 j = qrand() % (i+1);
  59                 tmp = _rand[i];
  60                 _rand[i] = _rand[j];
  61                 _rand[j] = tmp;
  62         }
  63         if (cnt > 1 && _last == _rand[0]) {
  64                 _rand.removeAt(0);
  65                 _rand.insert(qrand() % (cnt-1) + 1, _last);
  66         }
  67         _last = _rand.last();
  68 }
  69
  70 void Randomizer::removeId(int id) {
  71         _rand.removeOne(id);
  72 }
  73
  74 Player::Player(QObject *parent) :
  75     QObject(parent)
  76 {
  77         _player = new Phonon::MediaObject(this);
  78         _output = new Phonon::AudioOutput(Phonon::MusicCategory, this);
  79         _player->setTickInterval(1000);
  80         _equalizer = NULL;
  81         _equalizer_enabled = false;
  82         connect(_player, SIGNAL(stateChanged(Phonon::State,Phonon::State)), this, SLOT(_stateChanged(Phonon::State,Phonon::State)));
  83         connect(_player, SIGNAL(tick(qint64)), this, SLOT(_tick(qint64)));
  84         connect(_player, SIGNAL(finished()), this, SLOT(next()));
  85         _path = Phonon::createPath(_player, _output);
  86         QList<Phonon::EffectDescription> effects = Phonon::BackendCapabilities::availableAudioEffects();
  87         foreach (Phonon::EffectDescription desc, effects) {
  88                 if (desc.name() == "equalizer-10bands") {
  89                         _equalizer = new Phonon::Effect(desc, this);
  90                         Config config;
  91                         if (config.getValue("equalizer/equalizer").toString() == "enabled") {
  92                                 for (int i = 0; i < 10; i++) {
  93                                         QVariant var = config.getValue(QString("equalizer/band%1").arg(i));
  94                                         setEqualizerValue(i, var.toDouble());
  95                                 }
  96                                 enableEqualizer();
  97                         } else if (config.getValue("equalizer/equalizer") == "") {
  98                                 for (int i = 0; i < 10; i++) {
  99                                         config.setValue(QString("equalizer/band%1").arg(i), 0);
 100                                 }
 101                         }
 102                 }
 103         }
 104         int seed = QTime::currentTime().msec();
 105         qsrand(seed);
 106         _random = _config.getValue("playback/random").toBool();
 107         _repeat = (RepeatRule) _config.getValue("playback/repeat").toInt();
 108         _current = -1;
 109 }
 110
 111 void Player::setTrackId(int id) {
 112         if (_random) {
 113                 _randomizer.removeId(id);
 114         }
 115         _current = id;
 116         if (!_history.isEmpty() && _history.top() != _current || _history.isEmpty()) {
 117                 _history.push(_current);
 118         }
 119         _track = _playlist.tracks().at(_current);
 120         _set_source();
 121         _state = PLAYER_LOADING;
 122         emit stateChanged(_state);
 123 }
 124
 125 void Player::toggle() {
 126         if (_state == PLAYER_PLAYING) { // pause
 127                 _player->pause();
 128                 _state = PLAYER_PAUSED;
 129                 emit stateChanged(_state);
 130         } else { //play
 131                 play();
 132         }
 133 }
 134
 135 void Player::stop() {
 136         _player->stop();
 137         _state = PLAYER_STOPPED;
 138         emit stateChanged(_state);
 139 }
 140
 141 void Player::next() {
 142         int count = _playlist.tracks().count();
 143         if (count == 0) {
 144                 stop(); // empty playlist
 145                 return;
 146         }
 147         if (_repeat == REPEAT_ONE) {
 148                 _set_source();
 149                 play();
 150                 return;
 151         }
 152         _history.push(_current % count);
 153         if (!_queue.isEmpty()) {
 154                 _current = _queue.dequeue();
 155         } else if (!_prev_history.isEmpty()) {
 156                 _current = _prev_history.pop();
 157         } else {
 158                 if (_random) {
 159                         _current = _randomizer.next();
 160                 } else {
 161                         _current = _current + 1;
 162                 }
 163         }
 164         if (_random && _history.count() >= count && _repeat == REPEAT_NO||
 165                 _repeat == REPEAT_NO && _current >= count) {
 166                 _history.clear();
 167                 stop();
 168         } else {
 169                 _current %= count;
 170                 _track = _playlist.tracks().at(_current);
 171                 _set_source();
 172                 play();
 173         }
 174 }
 175
 176 void Player::_set_source() {
 177         _player->setCurrentSource(Phonon::MediaSource(_track.source()));
 178         emit trackChanged(_track);
 179 }
 180
 181 void Player::prev() {
 182         if (_history.count() > 0) {
 183                 _prev_history.push(_current);
 184                 _current = _history.pop();
 185                 _track = _playlist.tracks().at(_current);
 186         }
 187         _set_source();
 188         play();
 189 }
 190
 191 void Player::_stateChanged(Phonon::State newState, Phonon::State /*oldState*/) {
 192         switch (newState) {
 193         case Phonon::PlayingState:
 194                 _state = PLAYER_PLAYING;
 195                 emit stateChanged(_state);
 196                 break;
 197         case Phonon::ErrorState:
 198                 play(); // force
 199                 break;
 200         default:
 201                 break;
 202         }
 203 }
 204
 205 void Player::_tick(qint64 ticks) {
 206         int done = ticks/1000;
 207         int all = _track.metadata().length();
 208         emit tick(done, all);
 209         if (done+2 == all) {
 210                 _track.setCount(_track.count()+1);
 211                 emit trackDone(_track);
 212         }
 213 }
 214
 215 void Player::setPlaylist(Playlist playlist) {
 216         _playlist = playlist;
 217         _history.clear();
 218         _prev_history.clear();
 219         _queue.clear();
 220         QList<int> ids;
 221         int count = playlist.tracks().count();
 222         for (int i = 0; i < count; i++) {
 223                 ids.append(i);
 224         }
 225         _randomizer.setPlaylist(ids);
 226 }
 227
 228 void Player::seek(int s) {
 229         _player->seek(s*1000);
 230         if (s >= _track.metadata().length()) {
 231                 next();
 232         }
 233 }
 234
 235 void Player::play() {
 236         qWarning() << _current;
 237         if (_playlist.tracks().isEmpty())
 238                 return;
 239         _state = PLAYER_PLAYING;
 240         emit stateChanged(_state);
 241         if (_current == -1) {
 242                 _current = 0;
 243                 _track = _playlist.tracks().at(0);
 244                 _set_source();
 245         }
 246         _player->play();
 247 }
 248
 249 void Player::enqueue(int id) {
 250         _queue.enqueue(id);
 251 }
 252
 253 void Player::toggleRandom() {
 254         _random = !_random;
 255         _config.setValue("playback/random", _random);
 256 }
 257
 258 void Player::toggleRepeat() {
 259         if (_repeat == REPEAT_NO) {
 260                 _repeat = REPEAT_ALL;
 261         } else if (_repeat == REPEAT_ALL) {
 262                 _repeat = REPEAT_ONE;
 263         } else if (_repeat == REPEAT_ONE) {
 264                 _repeat = REPEAT_NO;
 265         }
 266         _config.setValue("playback/repeat", _repeat);
 267 }
 268
 269 void Player::equalizerValue(int band, double *val) {
 270         if (_equalizer == NULL) {
 271                 *val = 0;
 272                 return;
 273         }
 274         if (band < 0 || band > 9) {
 275                 *val = -24;
 276                 return;
 277         }
 278         if (_equalizer_enabled) {
 279                 QList<Phonon::EffectParameter> plist = _equalizer->parameters();
 280                 QVariant var = _equalizer->parameterValue(plist[band]);
 281                 *val = var.toDouble();
 282         }
 283 }
 284
 285 void Player::enableEqualizer() {
 286         if (_equalizer == NULL)
 287                 return;
 288         _equalizer_enabled = true;
 289         _path.insertEffect(_equalizer);
 290         Config config;
 291         config.setValue("equalizer/equalizer", "enabled");
 292 }
 293
 294 void Player::disableEqualizer() {
 295         if (_equalizer == NULL)
 296                 return;
 297         _equalizer_enabled = false;
 298         _path.removeEffect(_equalizer);
 299         Config config;
 300         config.setValue("equalizer/equalizer", "disabled");
 301 }
 302
 303 void Player::setEqualizerValue(int band, double value) {
 304         if (_equalizer == NULL)
 305                 return;
 306         if (band < 0 || band > 9 || value < -24 || value > 12) {
 307                 return;
 308         }
 309         QList<Phonon::EffectParameter> plist = _equalizer->parameters();
 310         _equalizer->setParameterValue(plist[band], QVariant::fromValue(value));
 311         Config config;
 312         config.setValue(QString("equalizer/band%1").arg(band), value);
 313 }
 314
 315 QString Player::artist() {
 316         if (_current < 0)
 317                 return "";
 318         return _playlist.tracks().at(_current).metadata().artist();
 319 }
 320
 321 QString Player::album() {
 322         if (_current < 0)
 323                 return "";
 324         return _playlist.tracks().at(_current).metadata().album();
 325 }
 326
 327 QString Player::title() {
 328         if (_current < 0)
 329                 return "";
 330         return _playlist.tracks().at(_current).metadata().title();
 331 }