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 (_current == _rand.count()) {
  36                 _shuffle();
  37                 _current = 0;
  38                 res = next();
  39         } else {
  40                 res = _rand.at(_current);
  41         }
  42         ++_current;
  43         return res;
  44 }
  45
  46 void Randomizer::setPlaylist(QList<int> pl) {
  47         _playlist = pl;
  48         _current = 0;
  49         _shuffle();
  50 }
  51
  52 void Randomizer::_shuffle() {
  53         _rand.clear();
  54         // Fisher-Yates algorithm:
  55         _rand = _playlist;
  56         int cnt = _playlist.count();
  57         int j = 0;
  58         int tmp = 0;
  59         for (int i = cnt-1; i > 0; i--) {
  60                 j = qrand() % (i+1);
  61                 tmp = _rand[i];
  62                 _rand[i] = _rand[j];
  63                 _rand[j] = tmp;
  64         }
  65 }
  66
  67 Player::Player(QObject *parent) :
  68     QObject(parent)
  69 {
  70         _player = new Phonon::MediaObject(this);
  71         _output = new Phonon::AudioOutput(Phonon::MusicCategory, this);
  72         _player->setTickInterval(1000);
  73         _equalizer = NULL;
  74         _equalizer_enabled = false;
  75         connect(_player, SIGNAL(stateChanged(Phonon::State,Phonon::State)), this, SLOT(_stateChanged(Phonon::State,Phonon::State)));
  76         connect(_player, SIGNAL(tick(qint64)), this, SLOT(_tick(qint64)));
  77         _path = Phonon::createPath(_player, _output);
  78         QList<Phonon::EffectDescription> effects = Phonon::BackendCapabilities::availableAudioEffects();
  79         foreach (Phonon::EffectDescription desc, effects) {
  80                 if (desc.name() == "equalizer-10bands") {
  81                         _equalizer = new Phonon::Effect(desc, this);
  82                         Config config;
  83                         if (config.getValue("equalizer/equalizer").toString() == "enabled") {
  84                                 for (int i = 0; i < 10; i++) {
  85                                         QVariant var = config.getValue(QString("equalizer/band%1").arg(i));
  86                                         setEqualizerValue(i, var.toDouble());
  87                                 }
  88                                 enableEqualizer();
  89                         } else if (config.getValue("equalizer/equalizer") == "") {
  90                                 for (int i = 0; i < 10; i++) {
  91                                         config.setValue(QString("equalizer/band%1").arg(i), 0);
  92                                 }
  93                         }
  94                 }
  95         }
  96         int seed = QTime::currentTime().msec();
  97         qsrand(seed);
  98         _random = _config.getValue("playback/random").toBool();
  99         _repeat = (RepeatRule) _config.getValue("playback/repeat").toInt();
 100         _current = -1;
 101 }
 102
 103 void Player::setTrackId(int id) {
 104         _current = id;
 105         if (!_history.isEmpty() && _history.top() != _current || _history.isEmpty()) {
 106                 _history.push(_current);
 107         }
 108         _track = _playlist.tracks().at(_current);
 109         _set_source();
 110         _state = PLAYER_LOADING;
 111         emit stateChanged(_state);
 112 }
 113
 114 void Player::toggle() {
 115         if (_state == PLAYER_PLAYING) { // pause
 116                 _player->pause();
 117                 _state = PLAYER_PAUSED;
 118                 emit stateChanged(_state);
 119         } else { //play
 120                 play();
 121         }
 122 }
 123
 124 void Player::stop() {
 125         _player->stop();
 126         _state = PLAYER_STOPPED;
 127         emit stateChanged(_state);
 128 }
 129
 130 void Player::next() {
 131         int count = _playlist.tracks().count();
 132         if (count == 0) {
 133                 stop(); // empty playlist
 134                 return;
 135         }
 136         if (_repeat == REPEAT_ONE) {
 137                 _set_source();
 138                 play();
 139                 return;
 140         }
 141         _history.push(_current % count);
 142         if (!_queue.isEmpty()) {
 143                 _current = _queue.dequeue();
 144         } else if (!_prev_history.isEmpty()) {
 145                 _current = _prev_history.pop();
 146         } else {
 147                 if (_random) {
 148                         _current = _randomizer.next();
 149                 } else {
 150                         _current = _current + 1;
 151                 }
 152         }
 153         if (_random && _history.count() >= count && _repeat == REPEAT_NO||
 154                 _repeat == REPEAT_NO && _current >= count) {
 155                 _history.clear();
 156                 stop();
 157         } else {
 158                 _current %= count;
 159                 _track = _playlist.tracks().at(_current);
 160                 _set_source();
 161                 play();
 162         }
 163 }
 164
 165 void Player::_set_source() {
 166         _player->setCurrentSource(Phonon::MediaSource(_track.source()));
 167         emit trackChanged(_track);
 168 }
 169
 170 void Player::prev() {
 171         if (_history.count() > 0) {
 172                 _prev_history.push(_current);
 173                 _current = _history.pop();
 174                 _track = _playlist.tracks().at(_current);
 175         }
 176         _set_source();
 177         play();
 178 }
 179
 180 void Player::_stateChanged(Phonon::State newState, Phonon::State /*oldState*/) {
 181         switch (newState) {
 182         case Phonon::PlayingState:
 183                 _state = PLAYER_PLAYING;
 184                 emit stateChanged(_state);
 185                 break;
 186         case Phonon::StoppedState:
 187                 break;
 188         case Phonon::LoadingState:
 189                 break;
 190         case Phonon::PausedState:
 191                 if (_state == PLAYER_PLAYING) {
 192                         next();
 193                 } else if (_state == PLAYER_ERROR) {
 194                         play();
 195                 }
 196                 break;
 197         case Phonon::BufferingState:
 198                 break;
 199         case Phonon::ErrorState:
 200                 play(); // force
 201 //              _state = PLAYER_ERROR;
 202                 break;
 203         }
 204 }
 205
 206 void Player::_tick(qint64 ticks) {
 207         int done = ticks/1000;
 208         int all = _track.metadata().length();
 209         emit tick(done, all);
 210         if (done+2 == all) {
 211                 _track.setCount(_track.count()+1);
 212                 emit trackDone(_track);
 213         }
 214 }
 215
 216 void Player::setPlaylist(Playlist playlist) {
 217         _playlist = playlist;
 218         _history.clear();
 219         _prev_history.clear();
 220         _queue.clear();
 221         QList<int> ids;
 222         int count = playlist.tracks().count();
 223         for (int i = 0; i < count; i++) {
 224                 ids.append(i);
 225         }
 226         _randomizer.setPlaylist(ids);
 227 }
 228
 229 void Player::seek(int s) {
 230         _player->seek(s*1000);
 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.setValue("equalizer/equalizer", "enabled");
 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.setValue("equalizer/equalizer", "disabled");
 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.setValue(QString("equalizer/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 }