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 "screen.h"
  23
  24 using namespace std;
  25 using namespace boost;
  26
  27 PlayerManager* PlayerManager::_instance = 0;
  28
  29 PlayerManager::PlayerManager ()
  30 {
  31
  32 }
  33
  34 PlayerManager *
  35 PlayerManager::instance ()
  36 {
  37         if (_instance == 0) {
  38                 _instance = new PlayerManager ();
  39         }
  40
  41         return _instance;
  42 }
  43
  44 void
  45 PlayerManager::setup (shared_ptr<const Film> f, shared_ptr<const Screen> sc)
  46 {
  47         boost::mutex::scoped_lock lm (_players_mutex);
  48
  49         _players.clear ();
  50         _players.push_back (shared_ptr<Player> (new Player (f, sc, Player::SPLIT_NONE)));
  51 }
  52
  53 void
  54 PlayerManager::setup (shared_ptr<const Film> fs_a, shared_ptr<const Film> fs_b, shared_ptr<const Screen> sc)
  55 {
  56         boost::mutex::scoped_lock lm (_players_mutex);
  57
  58         _players.clear ();
  59
  60         _players.push_back (shared_ptr<Player> (new Player (fs_a, sc, Player::SPLIT_LEFT)));
  61         _players.push_back (shared_ptr<Player> (new Player (fs_b, sc, Player::SPLIT_RIGHT)));
  62 }
  63
  64 void
  65 PlayerManager::pause_or_unpause ()
  66 {
  67         boost::mutex::scoped_lock lm (_players_mutex);
  68
  69         for (list<shared_ptr<Player> >::iterator i = _players.begin(); i != _players.end(); ++i) {
  70                 (*i)->command ("pause");
  71         }
  72 }
  73
  74 void
  75 PlayerManager::set_position (float p)
  76 {
  77         boost::mutex::scoped_lock lm (_players_mutex);
  78
  79         stringstream s;
  80         s << "pausing_keep_force seek " << p << " 2";
  81         for (list<shared_ptr<Player> >::iterator i = _players.begin(); i != _players.end(); ++i) {
  82                 (*i)->command (s.str ());
  83         }
  84 }
  85
  86 float
  87 PlayerManager::position () const
  88 {
  89         boost::mutex::scoped_lock lm (_players_mutex);
  90
  91         if (_players.empty ()) {
  92                 return 0;
  93         }
  94
  95         return _players.front()->position ();
  96 }
  97
  98 void
  99 PlayerManager::child_exited (pid_t pid)
 100 {
 101         boost::mutex::scoped_lock lm (_players_mutex);
 102
 103         list<shared_ptr<Player> >::iterator i = _players.begin();
 104         while (i != _players.end() && (*i)->mplayer_pid() != pid) {
 105                 ++i;
 106         }
 107
 108         if (i == _players.end()) {
 109                 return;
 110         }
 111
 112         _players.erase (i);
 113 }
 114
 115 PlayerManager::State
 116 PlayerManager::state () const
 117 {
 118         boost::mutex::scoped_lock lm (_players_mutex);
 119
 120         if (_players.empty ()) {
 121                 return QUIESCENT;
 122         }
 123
 124         if (_players.front()->paused ()) {
 125                 return PAUSED;
 126         }
 127
 128         return PLAYING;
 129 }
 130
 131 void
 132 PlayerManager::stop ()
 133 {
 134         boost::mutex::scoped_lock lm (_players_mutex);
 135         _players.clear ();
 136 }