source/client.cpp

   1 #include <msp/fs/dir.h>
   2 #include <msp/fs/stat.h>
   3 #include <msp/strings/format.h>
   4 #include "client.h"
   5 #include "xinema.h"
   6
   7 using namespace std;
   8 using namespace Msp;
   9
  10 Client::Client(Xinema &x, Net::StreamSocket *s):
  11         xinema(x),
  12         socket(s),
  13         stale(false)
  14 {
  15         socket->signal_data_available.connect(sigc::mem_fun(this, &Client::data_available));
  16         socket->signal_end_of_file.connect(sigc::mem_fun(this, &Client::end_of_stream));
  17
  18         xinema.signal_stream_created.connect(sigc::mem_fun(this, &Client::stream_created));
  19         XineStream *stream = xinema.get_stream();
  20         if(stream)
  21                 stream_created(*stream);
  22 }
  23
  24 void Client::data_available()
  25 {
  26         char rbuf[1024];
  27         unsigned len = socket->read(rbuf, sizeof(rbuf));
  28         buffer.append(rbuf, len);
  29
  30         string::size_type start = 0;
  31         while(1)
  32         {
  33                 string::size_type newline = buffer.find('\n', start);
  34                 if(newline==string::npos)
  35                         break;
  36
  37                 try
  38                 {
  39                         process_command(buffer.substr(start, newline-start));
  40                 }
  41                 catch(const exception &e)
  42                 {
  43                         send_reply(string("error ")+e.what());
  44                 }
  45
  46                 start = newline+1;
  47         }
  48
  49         buffer.erase(0, start);
  50 }
  51
  52 void Client::end_of_stream()
  53 {
  54         stale = true;
  55 }
  56
  57 XineStream &Client::get_stream() const
  58 {
  59         XineStream *stream = xinema.get_stream();
  60         if(stream)
  61                 return *stream;
  62
  63         throw runtime_error("No stream");
  64 }
  65
  66 void Client::process_command(const string &cmd)
  67 {
  68         string::size_type space = cmd.find(' ');
  69         string keyword = cmd.substr(0, space);
  70         string args;
  71         if(space!=string::npos)
  72                 args = cmd.substr(space+1);
  73
  74         if(keyword=="list_directory")
  75                 list_directory(args);
  76         else if(keyword=="play_file")
  77                 xinema.play_file(args);
  78         else if(keyword=="play")
  79                 get_stream().play();
  80         else if(keyword=="seek")
  81                 get_stream().seek(lexical_cast<float>(args)*Time::sec);
  82         else if(keyword=="pause")
  83                 get_stream().pause();
  84         else if(keyword=="stop")
  85                 get_stream().stop();
  86         else
  87                 throw runtime_error("Invalid command");
  88 }
  89
  90 void Client::send_reply(const string &reply)
  91 {
  92         socket->write(reply);
  93         socket->put('\n');
  94 }
  95
  96 void Client::list_directory(const FS::Path &dn)
  97 {
  98         list<string> files = FS::list_files(dn);
  99
 100         send_reply("directory "+dn.str());
 101         for(list<string>::const_iterator i=files.begin(); i!=files.end(); ++i)
 102         {
 103                 if(FS::is_dir(dn / *i))
 104                         send_reply("subdir "+*i);
 105                 else
 106                         send_reply("file "+*i);
 107         }
 108 }
 109
 110 void Client::stream_created(XineStream &stream)
 111 {
 112         stream.signal_state_changed.connect(sigc::mem_fun(this, &Client::stream_state_changed));
 113         stream.signal_title_changed.connect(sigc::mem_fun(this, &Client::stream_title_changed));
 114         stream.signal_duration_changed.connect(sigc::mem_fun(this, &Client::stream_duration_changed));
 115         stream.signal_position_changed.connect(sigc::mem_fun(this, &Client::stream_position_changed));
 116
 117         stream_state_changed(stream.get_state());
 118
 119         string title = stream.get_title();
 120         if(!title.empty())
 121                 send_reply("title "+title);
 122
 123         if(const Time::TimeDelta &dur = stream.get_duration())
 124                 stream_duration_changed(dur);
 125 }
 126
 127 void Client::stream_state_changed(XineStream::State state)
 128 {
 129         send_reply(format("state %s", state));
 130 }
 131
 132 void Client::stream_title_changed(const string &title)
 133 {
 134         send_reply("title "+title);
 135 }
 136
 137 void Client::stream_duration_changed(const Time::TimeDelta &dur)
 138 {
 139         send_reply(format("duration %.3f", dur/Time::sec));
 140 }
 141
 142 void Client::stream_position_changed(const Time::TimeDelta &pos)
 143 {
 144         if(abs(pos-last_position)>=Time::sec)
 145         {
 146                 send_reply(format("position %.3f", pos/Time::sec));
 147                 last_position = pos;
 148         }
 149 }