src/player_command.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   4
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include "player_command.h"
  21 #include "mpdclient.h"
  22 #include "options.h"
  23 #include "i18n.h"
  24 #include "screen_client.h"
  25 #include "screen_message.h"
  26
  27 int seek_id = -1;
  28 int seek_target_time;
  29
  30 static guint seek_source_id;
  31
  32 static void
  33 commit_seek(struct mpdclient *c)
  34 {
  35         struct mpd_connection *connection;
  36
  37         if (seek_id < 0)
  38                 return;
  39
  40         connection = mpdclient_get_connection(c);
  41         if (connection == NULL) {
  42                 seek_id = -1;
  43                 return;
  44         }
  45
  46         if (c->song != NULL && (unsigned)seek_id == mpd_song_get_id(c->song))
  47                 if (!mpd_run_seek_id(connection, seek_id, seek_target_time))
  48                         mpdclient_handle_error(c);
  49
  50         seek_id = -1;
  51 }
  52
  53 /**
  54  * This timer is invoked after seeking when the user hasn't typed a
  55  * key for 500ms.  It is used to do the real seeking.
  56  */
  57 static gboolean
  58 seek_timer(gpointer data)
  59 {
  60         struct mpdclient *c = data;
  61
  62         seek_source_id = 0;
  63         commit_seek(c);
  64         mpdclient_put_connection(c);
  65         return false;
  66 }
  67
  68 static void
  69 schedule_seek_timer(struct mpdclient *c)
  70 {
  71         assert(seek_source_id == 0);
  72
  73         seek_source_id = g_timeout_add(500, seek_timer, c);
  74 }
  75
  76 void
  77 cancel_seek_timer(void)
  78 {
  79         if (seek_source_id != 0) {
  80                 g_source_remove(seek_source_id);
  81                 seek_source_id = 0;
  82         }
  83 }
  84
  85 static bool
  86 setup_seek(struct mpdclient *c)
  87 {
  88         const struct mpd_song *song;
  89
  90         song = mpdclient_get_current_song(c);
  91         if (song == NULL)
  92                 return false;
  93
  94         if (seek_id != (int)mpd_song_get_id(song)) {
  95                 seek_id = mpd_song_get_id(song);
  96                 seek_target_time = mpd_status_get_elapsed_time(c->status);
  97         }
  98
  99         schedule_seek_timer(c);
 100
 101         return true;
 102 }
 103
 104 bool
 105 handle_player_command(struct mpdclient *c, command_t cmd)
 106 {
 107         struct mpd_connection *connection;
 108
 109         if (!mpdclient_is_connected(c) || c->status == NULL)
 110                 return false;
 111
 112         cancel_seek_timer();
 113
 114         switch(cmd) {
 115                 /*
 116         case CMD_PLAY:
 117                 mpdclient_cmd_play(c, MPD_PLAY_AT_BEGINNING);
 118                 break;
 119                 */
 120         case CMD_PAUSE:
 121                 connection = mpdclient_get_connection(c);
 122                 if (connection == NULL)
 123                         break;
 124
 125                 if (!mpd_run_pause(connection,
 126                                    mpd_status_get_state(c->status) != MPD_STATE_PAUSE))
 127                         mpdclient_handle_error(c);
 128                 break;
 129         case CMD_STOP:
 130                 connection = mpdclient_get_connection(c);
 131                 if (connection == NULL)
 132                         break;
 133
 134                 if (!mpd_run_stop(connection))
 135                         mpdclient_handle_error(c);
 136                 break;
 137         case CMD_CROP:
 138                 mpdclient_cmd_crop(c);
 139                 break;
 140         case CMD_SEEK_FORWARD:
 141                 if (!setup_seek(c))
 142                         break;
 143
 144                 seek_target_time += options.seek_time;
 145                 if (seek_target_time > (int)mpd_status_get_total_time(c->status))
 146                         seek_target_time = mpd_status_get_total_time(c->status);
 147                 break;
 148
 149         case CMD_TRACK_NEXT:
 150                 connection = mpdclient_get_connection(c);
 151                 if (connection == NULL)
 152                         break;
 153
 154                 if (!mpd_run_next(connection))
 155                         mpdclient_handle_error(c);
 156                 break;
 157         case CMD_SEEK_BACKWARD:
 158                 if (!setup_seek(c))
 159                         break;
 160
 161                 seek_target_time -= options.seek_time;
 162                 if (seek_target_time < 0)
 163                         seek_target_time = 0;
 164                 break;
 165
 166         case CMD_TRACK_PREVIOUS:
 167                 connection = mpdclient_get_connection(c);
 168                 if (connection == NULL)
 169                         break;
 170
 171                 if (!mpd_run_previous(connection))
 172                         mpdclient_handle_error(c);
 173                 break;
 174         case CMD_SHUFFLE:
 175                 connection = mpdclient_get_connection(c);
 176                 if (connection == NULL)
 177                         break;
 178
 179                 if (mpd_run_shuffle(connection))
 180                         screen_status_message(_("Shuffled playlist"));
 181                 else
 182                         mpdclient_handle_error(c);
 183                 break;
 184         case CMD_CLEAR:
 185                 connection = mpdclient_get_connection(c);
 186                 if (connection == NULL)
 187                         break;
 188
 189                 if (mpdclient_cmd_clear(c))
 190                         screen_status_message(_("Cleared playlist"));
 191                 break;
 192         case CMD_REPEAT:
 193                 connection = mpdclient_get_connection(c);
 194                 if (connection == NULL)
 195                         break;
 196
 197                 if (!mpd_run_repeat(connection,
 198                                     !mpd_status_get_repeat(c->status)))
 199                         mpdclient_handle_error(c);
 200                 break;
 201         case CMD_RANDOM:
 202                 connection = mpdclient_get_connection(c);
 203                 if (connection == NULL)
 204                         break;
 205
 206                 if (!mpd_run_random(connection,
 207                                     !mpd_status_get_random(c->status)))
 208                         mpdclient_handle_error(c);
 209                 break;
 210         case CMD_SINGLE:
 211                 connection = mpdclient_get_connection(c);
 212                 if (connection == NULL)
 213                         break;
 214
 215                 if (!mpd_run_single(connection,
 216                                     !mpd_status_get_single(c->status)))
 217                         mpdclient_handle_error(c);
 218                 break;
 219         case CMD_CONSUME:
 220                 connection = mpdclient_get_connection(c);
 221                 if (connection == NULL)
 222                         break;
 223
 224                 if (!mpd_run_consume(connection,
 225                                      !mpd_status_get_consume(c->status)))
 226                         mpdclient_handle_error(c);
 227                 break;
 228         case CMD_CROSSFADE:
 229                 connection = mpdclient_get_connection(c);
 230                 if (connection == NULL)
 231                         break;
 232
 233                 if (!mpd_run_crossfade(connection,
 234                                        mpd_status_get_crossfade(c->status) > 0
 235                                        ? 0 : options.crossfade_time))
 236                         mpdclient_handle_error(c);
 237                 break;
 238         case CMD_DB_UPDATE:
 239                 screen_database_update(c, NULL);
 240                 break;
 241         case CMD_VOLUME_UP:
 242                 mpdclient_cmd_volume_up(c);
 243                 break;
 244         case CMD_VOLUME_DOWN:
 245                 mpdclient_cmd_volume_down(c);
 246                 break;
 247
 248         default:
 249                 return false;
 250         }
 251
 252         return true;
 253 }