src/player_command.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2010 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         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         if (!mpdclient_is_playing(c))
  89                 return false;
  90
  91         if (seek_id != (int)mpd_status_get_song_id(c->status)) {
  92                 seek_id = mpd_status_get_song_id(c->status);
  93                 seek_target_time = mpd_status_get_elapsed_time(c->status);
  94         }
  95
  96         schedule_seek_timer(c);
  97
  98         return true;
  99 }
 100
 101 bool
 102 handle_player_command(struct mpdclient *c, command_t cmd)
 103 {
 104         struct mpd_connection *connection;
 105
 106         if (!mpdclient_is_connected(c) || c->status == NULL)
 107                 return false;
 108
 109         cancel_seek_timer();
 110
 111         switch(cmd) {
 112                 /*
 113         case CMD_PLAY:
 114                 mpdclient_cmd_play(c, MPD_PLAY_AT_BEGINNING);
 115                 break;
 116                 */
 117         case CMD_PAUSE:
 118                 connection = mpdclient_get_connection(c);
 119                 if (connection == NULL)
 120                         break;
 121
 122                 if (!mpd_run_pause(connection,
 123                                    mpd_status_get_state(c->status) != MPD_STATE_PAUSE))
 124                         mpdclient_handle_error(c);
 125                 break;
 126         case CMD_STOP:
 127                 connection = mpdclient_get_connection(c);
 128                 if (connection == NULL)
 129                         break;
 130
 131                 if (!mpd_run_stop(connection))
 132                         mpdclient_handle_error(c);
 133                 break;
 134         case CMD_CROP:
 135                 mpdclient_cmd_crop(c);
 136                 break;
 137         case CMD_SEEK_FORWARD:
 138                 if (!setup_seek(c))
 139                         break;
 140
 141                 seek_target_time += options.seek_time;
 142                 if (seek_target_time > (int)mpd_status_get_total_time(c->status))
 143                         seek_target_time = mpd_status_get_total_time(c->status);
 144                 break;
 145
 146         case CMD_TRACK_NEXT:
 147                 connection = mpdclient_get_connection(c);
 148                 if (connection == NULL)
 149                         break;
 150
 151                 if (!mpd_run_next(connection))
 152                         mpdclient_handle_error(c);
 153                 break;
 154         case CMD_SEEK_BACKWARD:
 155                 if (!setup_seek(c))
 156                         break;
 157
 158                 seek_target_time -= options.seek_time;
 159                 if (seek_target_time < 0)
 160                         seek_target_time = 0;
 161                 break;
 162
 163         case CMD_TRACK_PREVIOUS:
 164                 connection = mpdclient_get_connection(c);
 165                 if (connection == NULL)
 166                         break;
 167
 168                 if (!mpd_run_previous(connection))
 169                         mpdclient_handle_error(c);
 170                 break;
 171         case CMD_SHUFFLE:
 172                 connection = mpdclient_get_connection(c);
 173                 if (connection == NULL)
 174                         break;
 175
 176                 if (mpd_run_shuffle(connection))
 177                         screen_status_message(_("Shuffled playlist"));
 178                 else
 179                         mpdclient_handle_error(c);
 180                 break;
 181         case CMD_CLEAR:
 182                 connection = mpdclient_get_connection(c);
 183                 if (connection == NULL)
 184                         break;
 185
 186                 if (mpdclient_cmd_clear(c))
 187                         screen_status_message(_("Cleared playlist"));
 188                 break;
 189         case CMD_REPEAT:
 190                 connection = mpdclient_get_connection(c);
 191                 if (connection == NULL)
 192                         break;
 193
 194                 if (!mpd_run_repeat(connection,
 195                                     !mpd_status_get_repeat(c->status)))
 196                         mpdclient_handle_error(c);
 197                 break;
 198         case CMD_RANDOM:
 199                 connection = mpdclient_get_connection(c);
 200                 if (connection == NULL)
 201                         break;
 202
 203                 if (!mpd_run_random(connection,
 204                                     !mpd_status_get_random(c->status)))
 205                         mpdclient_handle_error(c);
 206                 break;
 207         case CMD_SINGLE:
 208                 connection = mpdclient_get_connection(c);
 209                 if (connection == NULL)
 210                         break;
 211
 212                 if (!mpd_run_single(connection,
 213                                     !mpd_status_get_single(c->status)))
 214                         mpdclient_handle_error(c);
 215                 break;
 216         case CMD_CONSUME:
 217                 connection = mpdclient_get_connection(c);
 218                 if (connection == NULL)
 219                         break;
 220
 221                 if (!mpd_run_consume(connection,
 222                                      !mpd_status_get_consume(c->status)))
 223                         mpdclient_handle_error(c);
 224                 break;
 225         case CMD_CROSSFADE:
 226                 connection = mpdclient_get_connection(c);
 227                 if (connection == NULL)
 228                         break;
 229
 230                 if (!mpd_run_crossfade(connection,
 231                                        mpd_status_get_crossfade(c->status) > 0
 232                                        ? 0 : options.crossfade_time))
 233                         mpdclient_handle_error(c);
 234                 break;
 235         case CMD_DB_UPDATE:
 236                 screen_database_update(c, NULL);
 237                 break;
 238         case CMD_VOLUME_UP:
 239                 mpdclient_cmd_volume_up(c);
 240                 break;
 241         case CMD_VOLUME_DOWN:
 242                 mpdclient_cmd_volume_down(c);
 243                 break;
 244
 245         default:
 246                 return false;
 247         }
 248
 249         return true;
 250 }