source/xinestream.cpp

   1 #include <msp/strings/format.h>
   2 #include "xineengine.h"
   3 #include "xinestream.h"
   4
   5 using namespace std;
   6 using namespace Msp;
   7
   8 XineStream::XineStream(XineEngine &e, const string &mrl):
   9         engine(e),
  10         state(STOPPED)
  11 {
  12         stream = xine_stream_new(engine.get_engine(), engine.get_audio_driver(), engine.get_video_driver());
  13         xine_open(stream, mrl.c_str());
  14
  15         queue = xine_event_new_queue(stream);
  16
  17         update_info();
  18
  19         engine.add_stream(*this);
  20 }
  21
  22 XineStream::~XineStream()
  23 {
  24         engine.remove_stream(*this);
  25
  26         xine_close(stream);
  27         xine_event_dispose_queue(queue);
  28         xine_dispose(stream);
  29 }
  30
  31 void XineStream::play()
  32 {
  33         if(state==STOPPED)
  34                 xine_play(stream, 0, 0);
  35         else if(state==PAUSED)
  36                 xine_set_param(stream, XINE_PARAM_SPEED, XINE_SPEED_NORMAL);
  37
  38         set_state(PLAYING);
  39 }
  40
  41 void XineStream::seek(const Time::TimeDelta &time)
  42 {
  43         xine_play(stream, 0, time/Time::msec);
  44         if(state!=PLAYING)
  45         {
  46                 xine_set_param(stream, XINE_PARAM_SPEED, XINE_SPEED_PAUSE);
  47                 set_state(PAUSED);
  48         }
  49 }
  50
  51 void XineStream::pause()
  52 {
  53         if(state==PLAYING)
  54         {
  55                 xine_set_param(stream, XINE_PARAM_SPEED, XINE_SPEED_PAUSE);
  56                 set_state(PAUSED);
  57         }
  58 }
  59
  60 void XineStream::stop()
  61 {
  62         xine_stop(stream);
  63         set_state(STOPPED);
  64 }
  65
  66 void XineStream::set_state(State s)
  67 {
  68         if(s==state)
  69                 return;
  70
  71         MutexLock lock(mutex);
  72         state = s;
  73         signal_state_changed.emit(state);
  74 }
  75
  76 void XineStream::tick()
  77 {
  78         while(xine_event_t *event = xine_event_get(queue))
  79         {
  80                 handle_event(*event);
  81                 xine_event_free(event);
  82         }
  83
  84         update_info();
  85 }
  86
  87 void XineStream::update_info()
  88 {
  89         const char *xt = xine_get_meta_info(stream, XINE_META_INFO_TITLE);
  90         if((xt && title.compare(xt)) || (!xt && !title.empty()))
  91         {
  92                 MutexLock lock(mutex);
  93                 title = (xt ? xt : string());
  94                 signal_title_changed.emit(title);
  95         }
  96
  97         int dur_msec, pos_msec;
  98         xine_get_pos_length(stream, 0, &pos_msec, &dur_msec);
  99         Time::TimeDelta dur = dur_msec*Time::msec;
 100         Time::TimeDelta pos = pos_msec*Time::msec;
 101         if(dur!=duration)
 102         {
 103                 MutexLock lock(mutex);
 104                 duration = dur;
 105                 signal_duration_changed.emit(duration);
 106         }
 107         if(pos!=position)
 108         {
 109                 MutexLock lock(mutex);
 110                 position = pos;
 111                 signal_position_changed.emit(position);
 112         }
 113 }
 114
 115 void XineStream::handle_event(const xine_event_t &event)
 116 {
 117         switch(event.type)
 118         {
 119         case XINE_EVENT_UI_PLAYBACK_FINISHED:
 120                 set_state(STOPPED);
 121                 signal_finished.emit();
 122                 break;
 123         }
 124 }
 125
 126
 127 void operator<<(LexicalConverter &conv, XineStream::State state)
 128 {
 129         switch(state)
 130         {
 131         case XineStream::STOPPED: conv.result("STOPPED"); return;
 132         case XineStream::PAUSED: conv.result("PAUSED"); return;
 133         case XineStream::PLAYING: conv.result("PLAYING"); return;
 134         default: conv.result(format("State(%d)", static_cast<int>(state))); return;
 135         }
 136 }
 137
 138 void operator>>(const LexicalConverter &conv, XineStream::State &state)
 139 {
 140         const string &str = conv.get();
 141         if(str=="STOPPED")
 142                 state = XineStream::STOPPED;
 143         else if(str=="PAUSED")
 144                 state = XineStream::PAUSED;
 145         else if(str=="PLAYING")
 146                 state = XineStream::PLAYING;
 147         else
 148                 throw lexical_error(format("Conversion of '%s' to XineStream::State", str));
 149 }