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 bool
  86 handle_player_command(struct mpdclient *c, command_t cmd)
  87 {
  88         struct mpd_connection *connection;
  89         const struct mpd_song *song;
  90
  91         if (!mpdclient_is_connected(c) || c->status == NULL)
  92                 return false;
  93
  94         cancel_seek_timer();
  95
  96         switch(cmd) {
  97                 /*
  98         case CMD_PLAY:
  99                 mpdclient_cmd_play(c, MPD_PLAY_AT_BEGINNING);
 100                 break;
 101                 */
 102         case CMD_PAUSE:
 103                 connection = mpdclient_get_connection(c);
 104                 if (connection == NULL)
 105                         break;
 106
 107                 if (!mpd_run_pause(connection,
 108                                    mpd_status_get_state(c->status) != MPD_STATE_PAUSE))
 109                         mpdclient_handle_error(c);
 110                 break;
 111         case CMD_STOP:
 112                 connection = mpdclient_get_connection(c);
 113                 if (connection == NULL)
 114                         break;
 115
 116                 if (!mpd_run_stop(connection))
 117                         mpdclient_handle_error(c);
 118                 break;
 119         case CMD_CROP:
 120                 mpdclient_cmd_crop(c);
 121                 break;
 122         case CMD_SEEK_FORWARD:
 123                 song = mpdclient_get_current_song(c);
 124                 if (song != NULL) {
 125                         if (seek_id != (int)mpd_song_get_id(song)) {
 126                                 seek_id = mpd_song_get_id(song);
 127                                 seek_target_time = mpd_status_get_elapsed_time(c->status);
 128                         }
 129                         seek_target_time+=options.seek_time;
 130                         if (seek_target_time > (int)mpd_status_get_total_time(c->status))
 131                                 seek_target_time = mpd_status_get_total_time(c->status);
 132                         schedule_seek_timer(c);
 133                 }
 134                 break;
 135         case CMD_TRACK_NEXT:
 136                 connection = mpdclient_get_connection(c);
 137                 if (connection == NULL)
 138                         break;
 139
 140                 if (!mpd_run_next(connection))
 141                         mpdclient_handle_error(c);
 142                 break;
 143         case CMD_SEEK_BACKWARD:
 144                 song = mpdclient_get_current_song(c);
 145                 if (song != NULL) {
 146                         if (seek_id != (int)mpd_song_get_id(song)) {
 147                                 seek_id = mpd_song_get_id(c->song);
 148                                 seek_target_time = mpd_status_get_elapsed_time(c->status);
 149                         }
 150                         seek_target_time-=options.seek_time;
 151                         if (seek_target_time < 0)
 152                                 seek_target_time=0;
 153                         schedule_seek_timer(c);
 154                 }
 155                 break;
 156         case CMD_TRACK_PREVIOUS:
 157                 connection = mpdclient_get_connection(c);
 158                 if (connection == NULL)
 159                         break;
 160
 161                 if (!mpd_run_previous(connection))
 162                         mpdclient_handle_error(c);
 163                 break;
 164         case CMD_SHUFFLE:
 165                 connection = mpdclient_get_connection(c);
 166                 if (connection == NULL)
 167                         break;
 168
 169                 if (mpd_run_shuffle(connection))
 170                         screen_status_message(_("Shuffled playlist"));
 171                 else
 172                         mpdclient_handle_error(c);
 173                 break;
 174         case CMD_CLEAR:
 175                 connection = mpdclient_get_connection(c);
 176                 if (connection == NULL)
 177                         break;
 178
 179                 if (mpdclient_cmd_clear(c))
 180                         screen_status_message(_("Cleared playlist"));
 181                 break;
 182         case CMD_REPEAT:
 183                 connection = mpdclient_get_connection(c);
 184                 if (connection == NULL)
 185                         break;
 186
 187                 if (!mpd_run_repeat(connection,
 188                                     !mpd_status_get_repeat(c->status)))
 189                         mpdclient_handle_error(c);
 190                 break;
 191         case CMD_RANDOM:
 192                 connection = mpdclient_get_connection(c);
 193                 if (connection == NULL)
 194                         break;
 195
 196                 if (!mpd_run_random(connection,
 197                                     !mpd_status_get_random(c->status)))
 198                         mpdclient_handle_error(c);
 199                 break;
 200         case CMD_SINGLE:
 201                 connection = mpdclient_get_connection(c);
 202                 if (connection == NULL)
 203                         break;
 204
 205                 if (!mpd_run_single(connection,
 206                                     !mpd_status_get_single(c->status)))
 207                         mpdclient_handle_error(c);
 208                 break;
 209         case CMD_CONSUME:
 210                 connection = mpdclient_get_connection(c);
 211                 if (connection == NULL)
 212                         break;
 213
 214                 if (!mpd_run_consume(connection,
 215                                      !mpd_status_get_consume(c->status)))
 216                         mpdclient_handle_error(c);
 217                 break;
 218         case CMD_CROSSFADE:
 219                 connection = mpdclient_get_connection(c);
 220                 if (connection == NULL)
 221                         break;
 222
 223                 if (!mpd_run_crossfade(connection,
 224                                        mpd_status_get_crossfade(c->status) > 0
 225                                        ? 0 : options.crossfade_time))
 226                         mpdclient_handle_error(c);
 227                 break;
 228         case CMD_DB_UPDATE:
 229                 screen_database_update(c, NULL);
 230                 break;
 231         case CMD_VOLUME_UP:
 232                 mpdclient_cmd_volume_up(c);
 233                 break;
 234         case CMD_VOLUME_DOWN:
 235                 mpdclient_cmd_volume_down(c);
 236                 break;
 237
 238         default:
 239                 return false;
 240         }
 241
 242         return true;
 243 }