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         xinema.signal_stream_destroyed.connect(sigc::mem_fun(this, &Client::stream_destroyed));
  20         XineStream *stream = xinema.get_stream();
  21         if(stream)
  22                 stream_created(*stream);
  23 }
  24
  25 void Client::data_available()
  26 {
  27         char rbuf[1024];
  28         unsigned len;
  29         try
  30         {
  31                 len = socket->read(rbuf, sizeof(rbuf));
  32         }
  33         catch(const std::exception &)
  34         {
  35                 stale = true;
  36                 return;
  37         }
  38
  39         buffer.append(rbuf, len);
  40
  41         string::size_type start = 0;
  42         while(1)
  43         {
  44                 string::size_type newline = buffer.find('\n', start);
  45                 if(newline==string::npos)
  46                         break;
  47
  48                 try
  49                 {
  50                         process_command(buffer.substr(start, newline-start));
  51                 }
  52                 catch(const exception &e)
  53                 {
  54                         send_reply(string("error ")+e.what());
  55                 }
  56
  57                 start = newline+1;
  58         }
  59
  60         buffer.erase(0, start);
  61 }
  62
  63 void Client::end_of_stream()
  64 {
  65         stale = true;
  66 }
  67
  68 XineStream &Client::get_stream() const
  69 {
  70         XineStream *stream = xinema.get_stream();
  71         if(stream)
  72                 return *stream;
  73
  74         throw runtime_error("No stream");
  75 }
  76
  77 void Client::process_command(const string &cmd)
  78 {
  79         string::size_type space = cmd.find(' ');
  80         string keyword = cmd.substr(0, space);
  81         string args;
  82         if(space!=string::npos)
  83                 args = cmd.substr(space+1);
  84
  85         if(keyword=="list_directory")
  86                 list_directory(args);
  87         else if(keyword=="play_file")
  88                 xinema.play_file(args);
  89         else if(keyword=="play")
  90                 get_stream().play();
  91         else if(keyword=="seek")
  92                 get_stream().seek(lexical_cast<float>(args)*Time::sec);
  93         else if(keyword=="pause")
  94                 get_stream().pause();
  95         else if(keyword=="stop")
  96                 get_stream().stop();
  97         else if(keyword=="select_audio")
  98                 set_audio_channel(args);
  99         else if(keyword=="select_spu")
 100                 set_spu_channel(args);
 101         else
 102                 throw runtime_error("Invalid command");
 103 }
 104
 105 void Client::send_reply(const string &reply)
 106 {
 107         Msp::MutexLock lock(mutex);
 108         try
 109         {
 110                 socket->write(reply);
 111                 socket->put('\n');
 112         }
 113         catch(const std::exception &)
 114         {
 115                 stale = true;
 116         }
 117 }
 118
 119 void Client::list_directory(const FS::Path &dn)
 120 {
 121         list<string> files = FS::list_files(dn);
 122
 123         send_reply("directory "+dn.str());
 124         for(list<string>::const_iterator i=files.begin(); i!=files.end(); ++i)
 125         {
 126                 if(FS::is_dir(dn / *i))
 127                         send_reply("subdir "+*i);
 128                 else
 129                         send_reply("file "+*i);
 130         }
 131 }
 132
 133 void Client::set_audio_channel(const string &arg)
 134 {
 135         XineStream &stream = get_stream();
 136         if(arg=="off")
 137                 stream.set_audio_off();
 138         else
 139                 stream.set_audio_channel(lexical_cast<unsigned>(arg));
 140 }
 141
 142 void Client::set_spu_channel(const string &arg)
 143 {
 144         XineStream &stream = get_stream();
 145         if(arg=="off")
 146                 stream.set_spu_off();
 147         else
 148                 stream.set_spu_channel(lexical_cast<unsigned>(arg));
 149 }
 150
 151 void Client::stream_created(XineStream &stream)
 152 {
 153         stream.signal_state_changed.connect(sigc::mem_fun(this, &Client::stream_state_changed));
 154         stream.signal_title_changed.connect(sigc::mem_fun(this, &Client::stream_title_changed));
 155         stream.signal_duration_changed.connect(sigc::mem_fun(this, &Client::stream_duration_changed));
 156         stream.signal_position_changed.connect(sigc::mem_fun(this, &Client::stream_position_changed));
 157         stream.signal_channels_changed.connect(sigc::mem_fun(this, &Client::stream_channels_changed));
 158
 159         MutexLock lock(stream.get_mutex());
 160         stream_state_changed(stream.get_state());
 161
 162         string title = stream.get_title();
 163         if(!title.empty())
 164                 send_reply("title "+title);
 165
 166         if(const Time::TimeDelta &dur = stream.get_duration())
 167                 stream_duration_changed(dur);
 168
 169         stream_channels_changed();
 170 }
 171
 172 void Client::stream_destroyed()
 173 {
 174         send_reply("ejected");
 175 }
 176
 177 void Client::stream_state_changed(XineStream::State state)
 178 {
 179         send_reply(format("state %s", state));
 180 }
 181
 182 void Client::stream_title_changed(const string &title)
 183 {
 184         send_reply("title "+title);
 185 }
 186
 187 void Client::stream_duration_changed(const Time::TimeDelta &dur)
 188 {
 189         send_reply(format("duration %.3f", dur/Time::sec));
 190 }
 191
 192 void Client::stream_position_changed(const Time::TimeDelta &pos)
 193 {
 194         if(abs(pos-last_position)>=Time::sec)
 195         {
 196                 send_reply(format("position %.3f", pos/Time::sec));
 197                 last_position = pos;
 198         }
 199 }
 200
 201 void Client::stream_channels_changed()
 202 {
 203         XineStream &stream = get_stream();
 204
 205         const vector<string> &audio_channels = stream.get_audio_channels();
 206         send_reply(format("audio_count %d", audio_channels.size()));
 207         for(unsigned i=0; i<audio_channels.size(); ++i)
 208                 send_reply(format("audio %d %s", i, audio_channels[i]));
 209
 210         const vector<string> &spu_channels = stream.get_spu_channels();
 211         send_reply(format("spu_count %d", spu_channels.size()));
 212         for(unsigned i=0; i<spu_channels.size(); ++i)
 213                 send_reply(format("spu %d %s", i, spu_channels[i]));
 214
 215         send_reply("channels_end");
 216 }