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