src/player_command.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2017 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_status.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         if (seek_id < 0)
  36                 return;
  37
  38         struct mpd_connection *connection = mpdclient_get_connection(c);
  39         if (connection == NULL) {
  40                 seek_id = -1;
  41                 return;
  42         }
  43
  44         if (c->song != NULL && (unsigned)seek_id == mpd_song_get_id(c->song))
  45                 if (!mpd_run_seek_id(connection, seek_id, seek_target_time))
  46                         mpdclient_handle_error(c);
  47
  48         seek_id = -1;
  49 }
  50
  51 /**
  52  * This timer is invoked after seeking when the user hasn't typed a
  53  * key for 500ms.  It is used to do the real seeking.
  54  */
  55 static gboolean
  56 seek_timer(gpointer data)
  57 {
  58         struct mpdclient *c = data;
  59
  60         seek_source_id = 0;
  61         commit_seek(c);
  62         return false;
  63 }
  64
  65 static void
  66 schedule_seek_timer(struct mpdclient *c)
  67 {
  68         assert(seek_source_id == 0);
  69
  70         seek_source_id = g_timeout_add(500, seek_timer, c);
  71 }
  72
  73 void
  74 cancel_seek_timer(void)
  75 {
  76         if (seek_source_id != 0) {
  77                 g_source_remove(seek_source_id);
  78                 seek_source_id = 0;
  79         }
  80 }
  81
  82 static bool
  83 setup_seek(struct mpdclient *c)
  84 {
  85         if (!mpdclient_is_playing(c))
  86                 return false;
  87
  88         if (seek_id != (int)mpd_status_get_song_id(c->status)) {
  89                 seek_id = mpd_status_get_song_id(c->status);
  90                 seek_target_time = mpd_status_get_elapsed_time(c->status);
  91         }
  92
  93         schedule_seek_timer(c);
  94
  95         return true;
  96 }
  97
  98 bool
  99 handle_player_command(struct mpdclient *c, command_t cmd)
 100 {
 101         if (!mpdclient_is_connected(c) || c->status == NULL)
 102                 return false;
 103
 104         cancel_seek_timer();
 105
 106         switch(cmd) {
 107                 struct mpd_connection *connection;
 108
 109                 /*
 110         case CMD_PLAY:
 111                 mpdclient_cmd_play(c, MPD_PLAY_AT_BEGINNING);
 112                 break;
 113                 */
 114         case CMD_PAUSE:
 115                 connection = mpdclient_get_connection(c);
 116                 if (connection == NULL)
 117                         break;
 118
 119                 if (!mpd_run_pause(connection,
 120                                    mpd_status_get_state(c->status) != MPD_STATE_PAUSE))
 121                         mpdclient_handle_error(c);
 122                 break;
 123         case CMD_STOP:
 124                 connection = mpdclient_get_connection(c);
 125                 if (connection == NULL)
 126                         break;
 127
 128                 if (!mpd_run_stop(connection))
 129                         mpdclient_handle_error(c);
 130                 break;
 131         case CMD_CROP:
 132                 mpdclient_cmd_crop(c);
 133                 break;
 134         case CMD_SEEK_FORWARD:
 135                 if (!setup_seek(c))
 136                         break;
 137
 138                 seek_target_time += options.seek_time;
 139                 if (seek_target_time > (int)mpd_status_get_total_time(c->status))
 140                         seek_target_time = mpd_status_get_total_time(c->status);
 141                 break;
 142
 143         case CMD_TRACK_NEXT:
 144                 connection = mpdclient_get_connection(c);
 145                 if (connection == NULL)
 146                         break;
 147
 148                 if (!mpd_run_next(connection))
 149                         mpdclient_handle_error(c);
 150                 break;
 151         case CMD_SEEK_BACKWARD:
 152                 if (!setup_seek(c))
 153                         break;
 154
 155                 seek_target_time -= options.seek_time;
 156                 if (seek_target_time < 0)
 157                         seek_target_time = 0;
 158                 break;
 159
 160         case CMD_TRACK_PREVIOUS:
 161                 connection = mpdclient_get_connection(c);
 162                 if (connection == NULL)
 163                         break;
 164
 165                 if (!mpd_run_previous(connection))
 166                         mpdclient_handle_error(c);
 167                 break;
 168         case CMD_SHUFFLE:
 169                 connection = mpdclient_get_connection(c);
 170                 if (connection == NULL)
 171                         break;
 172
 173                 if (mpd_run_shuffle(connection))
 174                         screen_status_message(_("Shuffled queue"));
 175                 else
 176                         mpdclient_handle_error(c);
 177                 break;
 178         case CMD_CLEAR:
 179                 connection = mpdclient_get_connection(c);
 180                 if (connection == NULL)
 181                         break;
 182
 183                 if (mpdclient_cmd_clear(c))
 184                         screen_status_message(_("Cleared queue"));
 185                 break;
 186         case CMD_REPEAT:
 187                 connection = mpdclient_get_connection(c);
 188                 if (connection == NULL)
 189                         break;
 190
 191                 if (!mpd_run_repeat(connection,
 192                                     !mpd_status_get_repeat(c->status)))
 193                         mpdclient_handle_error(c);
 194                 break;
 195         case CMD_RANDOM:
 196                 connection = mpdclient_get_connection(c);
 197                 if (connection == NULL)
 198                         break;
 199
 200                 if (!mpd_run_random(connection,
 201                                     !mpd_status_get_random(c->status)))
 202                         mpdclient_handle_error(c);
 203                 break;
 204         case CMD_SINGLE:
 205                 connection = mpdclient_get_connection(c);
 206                 if (connection == NULL)
 207                         break;
 208
 209                 if (!mpd_run_single(connection,
 210                                     !mpd_status_get_single(c->status)))
 211                         mpdclient_handle_error(c);
 212                 break;
 213         case CMD_CONSUME:
 214                 connection = mpdclient_get_connection(c);
 215                 if (connection == NULL)
 216                         break;
 217
 218                 if (!mpd_run_consume(connection,
 219                                      !mpd_status_get_consume(c->status)))
 220                         mpdclient_handle_error(c);
 221                 break;
 222         case CMD_CROSSFADE:
 223                 connection = mpdclient_get_connection(c);
 224                 if (connection == NULL)
 225                         break;
 226
 227                 if (!mpd_run_crossfade(connection,
 228                                        mpd_status_get_crossfade(c->status) > 0
 229                                        ? 0 : options.crossfade_time))
 230                         mpdclient_handle_error(c);
 231                 break;
 232         case CMD_DB_UPDATE:
 233                 screen_database_update(c, NULL);
 234                 break;
 235         case CMD_VOLUME_UP:
 236                 mpdclient_cmd_volume_up(c);
 237                 break;
 238         case CMD_VOLUME_DOWN:
 239                 mpdclient_cmd_volume_down(c);
 240                 break;
 241
 242         default:
 243                 return false;
 244         }
 245
 246         return true;
 247 }