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 int Client::convert_channel(const string &arg)
  78 {
  79         if(arg=="off")
  80                 return XineStream::OFF;
  81         else
  82                 return lexical_cast<unsigned>(arg);
  83 }
  84
  85 void Client::process_command(const string &cmd)
  86 {
  87         string::size_type space = cmd.find(' ');
  88         string keyword = cmd.substr(0, space);
  89         string args;
  90         if(space!=string::npos)
  91                 args = cmd.substr(space+1);
  92
  93         if(keyword=="list_directory")
  94                 list_directory(args);
  95         else if(keyword=="play_file")
  96                 xinema.play_file(args);
  97         else if(keyword=="play")
  98                 get_stream().play();
  99         else if(keyword=="seek")
 100                 get_stream().seek(lexical_cast<float>(args)*Time::sec);
 101         else if(keyword=="pause")
 102                 get_stream().pause();
 103         else if(keyword=="stop")
 104                 get_stream().stop();
 105         else if(keyword=="select_audio")
 106                 get_stream().select_audio_channel(convert_channel(args));
 107         else if(keyword=="select_spu")
 108                 get_stream().select_spu_channel(convert_channel(args));
 109         else
 110                 throw runtime_error("Invalid command");
 111 }
 112
 113 void Client::send_reply(const string &reply)
 114 {
 115         Msp::MutexLock lock(mutex);
 116         try
 117         {
 118                 socket->write(reply);
 119                 socket->put('\n');
 120         }
 121         catch(const std::exception &)
 122         {
 123                 stale = true;
 124         }
 125 }
 126
 127 void Client::list_directory(const FS::Path &dn)
 128 {
 129         list<string> files = FS::list_files(dn);
 130
 131         send_reply("directory "+dn.str());
 132         for(list<string>::const_iterator i=files.begin(); i!=files.end(); ++i)
 133         {
 134                 if(FS::is_dir(dn / *i))
 135                         send_reply("subdir "+*i);
 136                 else
 137                         send_reply("file "+*i);
 138         }
 139
 140         send_reply("directory_end");
 141 }
 142
 143 void Client::stream_created(XineStream &stream)
 144 {
 145         stream.signal_state_changed.connect(sigc::mem_fun(this, &Client::stream_state_changed));
 146         stream.signal_title_changed.connect(sigc::mem_fun(this, &Client::stream_title_changed));
 147         stream.signal_duration_changed.connect(sigc::mem_fun(this, &Client::stream_duration_changed));
 148         stream.signal_position_changed.connect(sigc::mem_fun(this, &Client::stream_position_changed));
 149         stream.signal_channels_changed.connect(sigc::mem_fun(this, &Client::stream_channels_changed));
 150         stream.signal_current_audio_channel_changed.connect(sigc::mem_fun(this, &Client::stream_audio_channel_changed));
 151         stream.signal_current_spu_channel_changed.connect(sigc::mem_fun(this, &Client::stream_spu_channel_changed));
 152
 153         MutexLock lock(stream.get_mutex());
 154         stream_state_changed(stream.get_state());
 155
 156         string title = stream.get_title();
 157         if(!title.empty())
 158                 send_reply("title "+title);
 159
 160         if(const Time::TimeDelta &dur = stream.get_duration())
 161                 stream_duration_changed(dur);
 162
 163         stream_channels_changed();
 164         stream_audio_channel_changed(stream.get_current_audio_channel());
 165         stream_spu_channel_changed(stream.get_current_spu_channel());
 166 }
 167
 168 void Client::stream_destroyed()
 169 {
 170         send_reply("ejected");
 171 }
 172
 173 void Client::stream_state_changed(XineStream::State state)
 174 {
 175         send_reply(format("state %s", state));
 176 }
 177
 178 void Client::stream_title_changed(const string &title)
 179 {
 180         send_reply("title "+title);
 181 }
 182
 183 void Client::stream_duration_changed(const Time::TimeDelta &dur)
 184 {
 185         send_reply(format("duration %.3f", dur/Time::sec));
 186 }
 187
 188 void Client::stream_position_changed(const Time::TimeDelta &pos)
 189 {
 190         if(abs(pos-last_position)>=Time::sec)
 191         {
 192                 send_reply(format("position %.3f", pos/Time::sec));
 193                 last_position = pos;
 194         }
 195 }
 196
 197 void Client::stream_channels_changed()
 198 {
 199         XineStream &stream = get_stream();
 200
 201         const vector<string> &audio_channels = stream.get_audio_channels();
 202         send_reply(format("audio_count %d", audio_channels.size()));
 203         for(unsigned i=0; i<audio_channels.size(); ++i)
 204                 send_reply(format("audio %d %s", i, audio_channels[i]));
 205
 206         const vector<string> &spu_channels = stream.get_spu_channels();
 207         send_reply(format("spu_count %d", spu_channels.size()));
 208         for(unsigned i=0; i<spu_channels.size(); ++i)
 209                 send_reply(format("spu %d %s", i, spu_channels[i]));
 210
 211         send_reply("channels_end");
 212 }
 213
 214 void Client::stream_audio_channel_changed(int chan)
 215 {
 216         if(chan==XineStream::OFF)
 217                 send_reply("current_audio off");
 218         else
 219                 send_reply(format("current_audio %d", chan));
 220 }
 221
 222 void Client::stream_spu_channel_changed(int chan)
 223 {
 224         if(chan==XineStream::OFF)
 225                 send_reply("current_spu off");
 226         else
 227                 send_reply(format("current_spu %d", chan));
 228 }