src/lib/player_manager.cc

   1 /*
   2     Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include "player_manager.h"
  21 #include "player.h"
  22 #include "film_state.h"
  23 #include "screen.h"
  24
  25 using namespace std;
  26 using namespace boost;
  27
  28 PlayerManager* PlayerManager::_instance = 0;
  29
  30 PlayerManager::PlayerManager ()
  31 {
  32
  33 }
  34
  35 PlayerManager *
  36 PlayerManager::instance ()
  37 {
  38         if (_instance == 0) {
  39                 _instance = new PlayerManager ();
  40         }
  41
  42         return _instance;
  43 }
  44
  45 void
  46 PlayerManager::setup (shared_ptr<const FilmState> fs, shared_ptr<const Screen> sc)
  47 {
  48         boost::mutex::scoped_lock lm (_players_mutex);
  49
  50         _players.clear ();
  51         _players.push_back (shared_ptr<Player> (new Player (fs, sc, Player::SPLIT_NONE)));
  52 }
  53
  54 void
  55 PlayerManager::setup (shared_ptr<const FilmState> fs_a, shared_ptr<const FilmState> fs_b, shared_ptr<const Screen> sc)
  56 {
  57         boost::mutex::scoped_lock lm (_players_mutex);
  58
  59         _players.clear ();
  60
  61         _players.push_back (shared_ptr<Player> (new Player (fs_a, sc, Player::SPLIT_LEFT)));
  62         _players.push_back (shared_ptr<Player> (new Player (fs_b, sc, Player::SPLIT_RIGHT)));
  63 }
  64
  65 void
  66 PlayerManager::pause_or_unpause ()
  67 {
  68         boost::mutex::scoped_lock lm (_players_mutex);
  69
  70         for (list<shared_ptr<Player> >::iterator i = _players.begin(); i != _players.end(); ++i) {
  71                 (*i)->command ("pause");
  72         }
  73 }
  74
  75 void
  76 PlayerManager::set_position (float p)
  77 {
  78         boost::mutex::scoped_lock lm (_players_mutex);
  79
  80         stringstream s;
  81         s << "pausing_keep_force seek " << p << " 2";
  82         for (list<shared_ptr<Player> >::iterator i = _players.begin(); i != _players.end(); ++i) {
  83                 (*i)->command (s.str ());
  84         }
  85 }
  86
  87 float
  88 PlayerManager::position () const
  89 {
  90         boost::mutex::scoped_lock lm (_players_mutex);
  91
  92         if (_players.empty ()) {
  93                 return 0;
  94         }
  95
  96         return _players.front()->position ();
  97 }
  98
  99 void
 100 PlayerManager::child_exited (pid_t pid)
 101 {
 102         boost::mutex::scoped_lock lm (_players_mutex);
 103
 104         list<shared_ptr<Player> >::iterator i = _players.begin();
 105         while (i != _players.end() && (*i)->mplayer_pid() != pid) {
 106                 ++i;
 107         }
 108
 109         if (i == _players.end()) {
 110                 return;
 111         }
 112
 113         _players.erase (i);
 114 }
 115
 116 PlayerManager::State
 117 PlayerManager::state () const
 118 {
 119         boost::mutex::scoped_lock lm (_players_mutex);
 120
 121         if (_players.empty ()) {
 122                 return QUIESCENT;
 123         }
 124
 125         if (_players.front()->paused ()) {
 126                 return PAUSED;
 127         }
 128
 129         return PLAYING;
 130 }
 131
 132 void
 133 PlayerManager::stop ()
 134 {
 135         boost::mutex::scoped_lock lm (_players_mutex);
 136         _players.clear ();
 137 }