/* $Id$ * $URL$ * * mpd informations v0.82 * * Copyright (C) 2006 Stefan Kuhne * Copyright (C) 2007 Robert Buchholz * Copyright (C) 2008 Michael Vogt * Copyright (C) 2006 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ /* * changelog v0.5 (20.11.2007): * changed: mpd::artist(), mpd::title(), mpd::album() * init code, call only if a function is used. * removed: "old style" functions, duplicate code * fixed: strdup() mem leaks * added: getstate, function which return player status: play/pause/stop * getVolume, funtcion which returns the mpd volume * getFilename, return current filename * * * changelog v0.6 (05.12.2007): * changed: -connection handling * -verbose "NO TAG" messages * -init code * added: -added password support (MPD_PASSWORD env variable) * -mpd::getSongsInDb - how many songs are in the mpd db? * -mpd::getMpdUptime - uptime of mpd * -mpd::getMpdPlayTime - playtime of mpd * -mpd::getMpdDbPlayTime - playtime of all songs in mpd db * -basic error handler.. * -mpd configuration in lcd4linux.conf * -formatTime* - use those functions to format time values * removed: -reprand method * * * changelog v0.7 (14.12.2007): * changed: -connection handling improved, do not disconnect/reconnect for each query * -> uses less ressources * * changelog v0.8 (30.01.2008): * changed: -libmpd is not needed anymore, use libmpdclient.c instead * fixed: -getMpdUptime() * -getMpdPlaytime() * -type definition * added: -mpd::getSamplerateHz * -getAudioChannels * * changelog v0.83 (26.07.2008): * added: -mpd::cmd* commands * */ /* TODO: -what happens if the db is updating? */ #include "config.h" #include #include #include #include #include #include "debug.h" #include "plugin.h" #include "cfg.h" /* struct timeval */ #include /* source: http://www.musicpd.org/libmpdclient.shtml */ #include "libmpdclient.h" #ifdef WITH_DMALLOC #include #endif #define TIMEOUT_IN_S 10 #define ERROR_DISPLAY 5 /* current song */ static int l_totalTimeSec; static int l_elapsedTimeSec; static int l_bitRate; static int l_repeatEnabled; static int l_randomEnabled; static int l_state; static int l_volume; static int l_numberOfSongs; static unsigned long l_uptime; static unsigned long l_playTime; static unsigned long l_dbPlayTime; static int l_playlistLength; /* pos in playlist */ static int l_currentSongPos; static unsigned int l_sampleRate; static int l_channels; static mpd_Song *currentSong; /* connection information */ static char host[255]; static char pw[255]; static int iport; static int plugin_enabled; static int waittime; struct timeval timestamp; static mpd_Connection *conn; static char Section[] = "Plugin:MPD"; static int errorcnt = 0; static int configure_mpd(void) { static int configured = 0; char *s; if (configured != 0) return configured; /* read enabled */ if (cfg_number(Section, "enabled", 0, 0, 1, &plugin_enabled) < 1) { plugin_enabled = 0; } if (plugin_enabled != 1) { info("[MPD] WARNING: Plugin is not enabled! (set 'enabled 1' to enable this plugin)"); configured = 1; return configured; } /* read server */ s = cfg_get(Section, "server", "localhost"); if (*s == '\0') { info("[MPD] empty '%s.server' entry from %s, assuming 'localhost'", Section, cfg_source()); strcpy(host, "localhost"); } else strcpy(host, s); free(s); /* read port */ if (cfg_number(Section, "port", 6600, 1, 65536, &iport) < 1) { info("[MPD] no '%s.port' entry from %s using MPD's default", Section, cfg_source()); } /* read minUpdateTime in ms */ if (cfg_number(Section, "minUpdateTime", 500, 1, 10000, &waittime) < 1) { info("[MPD] no '%s.minUpdateTime' entry from %s using MPD's default", Section, cfg_source()); } /* read password */ s = cfg_get(Section, "password", ""); if (*s == '\0') { info("[MPD] empty '%s.password' entry in %s, assuming none", Section, cfg_source()); memset(pw, 0, sizeof(pw)); } else { strcpy(pw, s); free(s); } debug("[MPD] connection detail: [%s:%d]", host, iport); configured = 1; return configured; } static int mpd_update() { int ret = -1; struct timeval now; /* reread every 1000 msec only */ gettimeofday(&now, NULL); int timedelta = (now.tv_sec - timestamp.tv_sec) * 1000 + (now.tv_usec - timestamp.tv_usec) / 1000; if (timedelta < waittime) { /* debug("[MPD] waittime not reached...\n"); */ return 1; } /* check if configured */ if (configure_mpd() < 0) { return -1; } /* check if connected */ if (conn == NULL || conn->error) { if (conn) { if (errorcnt < ERROR_DISPLAY) debug("[MPD] Error: [%s], try to reconnect to [%s]:[%i]\n", conn->errorStr, host, iport); mpd_closeConnection(conn); } else debug("[MPD] initialize connect to [%s]:[%i]\n", host, iport); conn = mpd_newConnection(host, iport, TIMEOUT_IN_S); if (conn->error) { if (errorcnt < ERROR_DISPLAY) error("[MPD] connection failed, give up..."); if (errorcnt == ERROR_DISPLAY) error("[MPD] stop logging, until connection is fixed!"); errorcnt++; gettimeofday(×tamp, NULL); return -1; } errorcnt = 0; debug("[MPD] connection fixed..."); } mpd_Status *status = NULL; mpd_Stats *stats = NULL; mpd_InfoEntity *entity; mpd_sendCommandListOkBegin(conn); mpd_sendStatsCommand(conn); if (conn->error) { error("[MPD] error: %s", conn->errorStr); return -1; } mpd_sendStatusCommand(conn); mpd_sendCurrentSongCommand(conn); mpd_sendCommandListEnd(conn); stats = mpd_getStats(conn); if (stats == NULL) { error("[MPD] error mpd_getStats: %s", conn->errorStr); goto cleanup; } mpd_nextListOkCommand(conn); if ((status = mpd_getStatus(conn)) == NULL) { error("[MPD] error mpd_nextListOkCommand: %s", conn->errorStr); goto cleanup; } mpd_nextListOkCommand(conn); while ((entity = mpd_getNextInfoEntity(conn))) { mpd_Song *song = entity->info.song; if (entity->type != MPD_INFO_ENTITY_TYPE_SONG) { mpd_freeInfoEntity(entity); continue; } if (currentSong != NULL) mpd_freeSong(currentSong); currentSong = mpd_songDup(song); mpd_freeInfoEntity(entity); } l_elapsedTimeSec = status->elapsedTime; l_totalTimeSec = status->totalTime; l_repeatEnabled = status->repeat; l_randomEnabled = status->random; l_bitRate = status->bitRate; l_state = status->state; l_volume = status->volume; l_playlistLength = status->playlistLength; l_currentSongPos = status->song + 1; l_sampleRate = status->sampleRate; l_channels = status->channels; l_numberOfSongs = stats->numberOfSongs; l_uptime = stats->uptime; l_playTime = stats->playTime; l_dbPlayTime = stats->dbPlayTime; /* sanity checks */ if (l_volume < 0 || l_volume > 100) l_volume = 0; if (l_bitRate < 0) l_bitRate = 0; if (l_elapsedTimeSec > l_totalTimeSec || l_elapsedTimeSec < 0) l_elapsedTimeSec = 0; ret = 0; cleanup: if (stats != NULL) mpd_freeStats(stats); if (status != NULL) mpd_freeStatus(status); if (conn->error) { error("[MPD] error: %s", conn->errorStr); return -1; } mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); return -1; } gettimeofday(×tamp, NULL); return ret; } static void elapsedTimeSec(RESULT * result) { double d; mpd_update(); d = (double) l_elapsedTimeSec; SetResult(&result, R_NUMBER, &d); } static void totalTimeSec(RESULT * result) { double d; mpd_update(); d = (double) l_totalTimeSec; SetResult(&result, R_NUMBER, &d); } static void bitRate(RESULT * result) { double d; mpd_update(); d = (double) l_bitRate; SetResult(&result, R_NUMBER, &d); } static void getRepeatInt(RESULT * result) { double d; mpd_update(); d = (double) l_repeatEnabled; SetResult(&result, R_NUMBER, &d); } static void getRandomInt(RESULT * result) { double d; mpd_update(); d = (double) l_randomEnabled; SetResult(&result, R_NUMBER, &d); } /* if no tag is availabe, use filename */ static void getArtist(RESULT * result) { mpd_update(); if (currentSong != NULL) { if (currentSong->artist != NULL) { SetResult(&result, R_STRING, currentSong->artist); } else { if (currentSong->file != NULL) SetResult(&result, R_STRING, currentSong->file); else SetResult(&result, R_STRING, ""); } } else SetResult(&result, R_STRING, ""); } static void getTitle(RESULT * result) { mpd_update(); if (currentSong != NULL) { if (currentSong->title != NULL) { SetResult(&result, R_STRING, currentSong->title); } else SetResult(&result, R_STRING, ""); } else SetResult(&result, R_STRING, ""); } static void getAlbum(RESULT * result) { mpd_update(); if (currentSong != NULL) { if (currentSong->album != NULL) SetResult(&result, R_STRING, currentSong->album); else SetResult(&result, R_STRING, ""); } else SetResult(&result, R_STRING, ""); } static void getFilename(RESULT * result) { mpd_update(); if (currentSong != NULL) { if (currentSong->file != NULL) SetResult(&result, R_STRING, currentSong->file); else SetResult(&result, R_STRING, ""); } else SetResult(&result, R_STRING, ""); } /* return player state: 0=unknown 1=play 2=pause 3=stop */ static void getStateInt(RESULT * result) { double ret; mpd_update(); switch (l_state) { case MPD_STATUS_STATE_PLAY: ret = 1; break; case MPD_STATUS_STATE_PAUSE: ret = 2; break; case MPD_STATUS_STATE_STOP: ret = 3; break; default: ret = 0; break; } SetResult(&result, R_NUMBER, &ret); } static void getVolume(RESULT * result) { double d; mpd_update(); d = (double) l_volume; /* return 0..100 or < 0 when failed */ SetResult(&result, R_NUMBER, &d); } /* return the # of songs in the mpd db .. */ static void getSongsInDb(RESULT * result) { double d; mpd_update(); d = (double) l_numberOfSongs; SetResult(&result, R_NUMBER, &d); } static void getMpdUptime(RESULT * result) { double d; mpd_update(); d = (double) l_uptime; SetResult(&result, R_NUMBER, &d); } static void getMpdPlayTime(RESULT * result) { double d; mpd_update(); d = (double) l_playTime; SetResult(&result, R_NUMBER, &d); } static void getMpdDbPlayTime(RESULT * result) { double d; mpd_update(); d = (double) l_dbPlayTime; SetResult(&result, R_NUMBER, &d); } static void getMpdPlaylistLength(RESULT * result) { double d; mpd_update(); d = (double) l_playlistLength; SetResult(&result, R_NUMBER, &d); } static void getCurrentSongPos(RESULT * result) { double d; mpd_update(); d = (double) l_currentSongPos; SetResult(&result, R_NUMBER, &d); } static void getAudioChannels(RESULT * result) { double d; mpd_update(); d = (double) l_channels; SetResult(&result, R_NUMBER, &d); } static void getSamplerateHz(RESULT * result) { double d; mpd_update(); d = (double) l_sampleRate; SetResult(&result, R_NUMBER, &d); } static void nextSong() { mpd_update(); if (currentSong != NULL) { mpd_sendNextCommand(conn); mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void prevSong() { mpd_update(); if (currentSong != NULL) { mpd_sendPrevCommand(conn); mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void stopSong() { mpd_update(); if (currentSong != NULL) { mpd_sendStopCommand(conn); mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void pauseSong() { mpd_update(); if (currentSong != NULL) { if (l_state == MPD_STATUS_STATE_PAUSE) { mpd_sendPauseCommand(conn, 0); } else { mpd_sendPauseCommand(conn, 1); } mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void volUp() { mpd_update(); if (currentSong != NULL) { l_volume += 5; if (l_volume > 100) l_volume = 100; mpd_sendSetvolCommand(conn, l_volume); mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void volDown() { mpd_update(); if (currentSong != NULL) { if (l_volume > 5) l_volume -= 5; else l_volume = 0; mpd_sendSetvolCommand(conn, l_volume); mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void toggleRepeat() { mpd_update(); if (currentSong != NULL) { l_repeatEnabled = !l_repeatEnabled; mpd_sendRepeatCommand(conn, l_repeatEnabled); mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void toggleRandom() { mpd_update(); if (currentSong != NULL) { l_randomEnabled = !l_randomEnabled; mpd_sendRandomCommand(conn, l_randomEnabled); mpd_finishCommand(conn); if (conn->error) { error("[MPD] error mpd_finishCommand: %s", conn->errorStr); } } } static void formatTimeMMSS(RESULT * result, RESULT * param) { long sec; char myTime[6] = " "; sec = R2N(param); if ((sec >= 0) && (sec < 6000)) { const int minutes = (int) (sec / 60); const int seconds = (int) (sec % 60); sprintf(myTime, "%02d:%02d", minutes, seconds); } else if (sec >= 6000) { strcpy(myTime, "LONG"); } else strcpy(myTime, "ERROR"); /* store result */ SetResult(&result, R_STRING, myTime); } static void formatTimeDDHHMM(RESULT * result, RESULT * param) { long sec; char myTime[16] = " "; sec = R2N(param); if (sec >= 0) { int days = sec / 86400; int hours = (sec % 86400) / 3600; int minutes = (sec % 3600) / 60; sprintf(myTime, "%dd%02dh%02dm", days, hours, minutes); /* 3d 12:33h */ } else strcpy(myTime, "ERROR"); /* store result */ SetResult(&result, R_STRING, myTime); } int plugin_init_mpd(void) { int check; debug("[MPD] v0.83, check lcd4linux configuration file..."); check = configure_mpd(); if (plugin_enabled != 1) return 0; if (check) debug("[MPD] configured!"); else debug("[MPD] error, NOT configured!"); /* when mpd dies, do NOT exit application, ignore it! */ signal(SIGPIPE, SIG_IGN); gettimeofday(×tamp, NULL); AddFunction("mpd::artist", 0, getArtist); AddFunction("mpd::title", 0, getTitle); AddFunction("mpd::album", 0, getAlbum); AddFunction("mpd::file", 0, getFilename); AddFunction("mpd::totalTimeSec", 0, totalTimeSec); AddFunction("mpd::elapsedTimeSec", 0, elapsedTimeSec); AddFunction("mpd::bitRate", 0, bitRate); AddFunction("mpd::getSamplerateHz", 0, getSamplerateHz); AddFunction("mpd::getAudioChannels", 0, getAudioChannels); AddFunction("mpd::getRepeatInt", 0, getRepeatInt); AddFunction("mpd::getRandomInt", 0, getRandomInt); AddFunction("mpd::getStateInt", 0, getStateInt); AddFunction("mpd::getVolume", 0, getVolume); AddFunction("mpd::getSongsInDb", 0, getSongsInDb); AddFunction("mpd::getMpdUptime", 0, getMpdUptime); AddFunction("mpd::getMpdPlayTime", 0, getMpdPlayTime); AddFunction("mpd::getMpdDbPlayTime", 0, getMpdDbPlayTime); AddFunction("mpd::getMpdPlaylistLength", 0, getMpdPlaylistLength); AddFunction("mpd::getMpdPlaylistGetCurrentId", 0, getCurrentSongPos); AddFunction("mpd::cmdNextSong", 0, nextSong); AddFunction("mpd::cmdPrevSong", 0, prevSong); AddFunction("mpd::cmdStopSong", 0, stopSong); AddFunction("mpd::cmdTogglePauseSong", 0, pauseSong); AddFunction("mpd::cmdVolUp", 0, volUp); AddFunction("mpd::cmdVolDown", 0, volDown); AddFunction("mpd::cmdToggleRandom", 0, toggleRandom); AddFunction("mpd::cmdToggleRepeat", 0, toggleRepeat); AddFunction("mpd::formatTimeMMSS", 1, formatTimeMMSS); AddFunction("mpd::formatTimeDDHHMM", 1, formatTimeDDHHMM); return 0; } void plugin_exit_mpd(void) { if (plugin_enabled == 1) { debug("[MPD] disconnect from mpd"); if (currentSong != NULL) mpd_freeSong(currentSong); mpd_closeConnection(conn); } } 447' href='#n447'>447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247