source/xinestream.cpp

   1 #include <msp/io/print.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         check_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         state = s;
  72         signal_state_changed.emit(state);
  73 }
  74
  75 void XineStream::tick()
  76 {
  77         while(xine_event_t *event = xine_event_get(queue))
  78         {
  79                 handle_event(*event);
  80                 xine_event_free(event);
  81         }
  82
  83         check_info();
  84 }
  85
  86 void XineStream::check_info()
  87 {
  88         const char *xt = xine_get_meta_info(stream, XINE_META_INFO_TITLE);
  89         if(xt)
  90         {
  91                 if(title.compare(xt))
  92                 {
  93                         title = xt;
  94                         signal_title_changed.emit(title);
  95                 }
  96         }
  97         else if(!title.empty())
  98         {
  99                 title.clear();
 100                 signal_title_changed.emit(title);
 101         }
 102
 103         int dur_msec, pos_msec;
 104         xine_get_pos_length(stream, 0, &pos_msec, &dur_msec);
 105         Time::TimeDelta dur = dur_msec*Time::msec;
 106         Time::TimeDelta pos = pos_msec*Time::msec;
 107         if(dur!=duration)
 108         {
 109                 duration = dur;
 110                 signal_duration_changed.emit(duration);
 111         }
 112         if(pos!=position)
 113         {
 114                 position = pos;
 115                 signal_position_changed.emit(position);
 116         }
 117 }
 118
 119 void XineStream::handle_event(const xine_event_t &event)
 120 {
 121         switch(event.type)
 122         {
 123         case XINE_EVENT_UI_PLAYBACK_FINISHED:
 124                 set_state(STOPPED);
 125                 break;
 126         case XINE_EVENT_PROGRESS:
 127                 {
 128                         xine_progress_data_t *data = reinterpret_cast<xine_progress_data_t *>(event.data);
 129                         IO::print("%s [%d%%]\n", data->description, data->percent);
 130                 }
 131                 break;
 132         }
 133 }
 134
 135
 136 void operator<<(LexicalConverter &conv, XineStream::State state)
 137 {
 138         switch(state)
 139         {
 140         case XineStream::STOPPED: conv.result("STOPPED"); return;
 141         case XineStream::PAUSED: conv.result("PAUSED"); return;
 142         case XineStream::PLAYING: conv.result("PLAYING"); return;
 143         default: conv.result(format("State(%d)", static_cast<int>(state))); return;
 144         }
 145 }
 146
 147 void operator>>(const LexicalConverter &conv, XineStream::State &state)
 148 {
 149         const string &str = conv.get();
 150         if(str=="STOPPED")
 151                 state = XineStream::STOPPED;
 152         else if(str=="PAUSED")
 153                 state = XineStream::PAUSED;
 154         else if(str=="PLAYING")
 155                 state = XineStream::PLAYING;
 156         else
 157                 throw lexical_error(format("Conversion of '%s' to XineStream::State", str));
 158 }