[lcd4linux @ 2006-04-15 05:22:52 by reinelt]

mpd plugin from Stefan Kuhne

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@658 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 239 insertions, 0 deletions

diff --git a/plugin_mpd.c b/plugin_mpd.c
new file mode 100644
index 0000000..1316687
--- /dev/null
+++ b/plugin_mpd.c
@@ -0,0 +1,239 @@
+/* $Id: plugin_mpd.c,v 1.1 2006/04/15 05:22:52 reinelt Exp $
+ *
+ * mpd informations
+ *
+ * Copyright (C) 2006 Stefan Kuhne <sk-privat@gmx.net>
+ * Copyright (C) 2006 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * 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.
+ *
+ *
+ * $Log: plugin_mpd.c,v $
+ * Revision 1.1  2006/04/15 05:22:52  reinelt
+ * mpd plugin from Stefan Kuhne
+ *
+ */
+
+/* 
+ * exported functions:
+ *
+ * int plugin_init_sample (void)
+ *  adds various functions
+ *
+ */
+
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "debug.h"
+#include "plugin.h"
+
+#include <libmpd/libmpd.h>
+
+#ifdef WITH_DMALLOC
+#include <dmalloc.h>
+#endif
+
+/* Struct Pointer */
+
+struct Pointer {
+    mpd_Connection *conn;
+    mpd_Status *status;
+    mpd_InfoEntity *entity;
+};
+
+
+
+static struct Pointer connect()
+{
+    char *host = "localhost";
+    char *port = "6600";
+    int iport;
+    char *test;
+    struct Pointer mpd;
+
+    if ((test = getenv("MPD_HOST"))) {
+	host = test;
+    }
+
+    if ((test = getenv("MPD_PORT"))) {
+	port = test;
+    }
+
+    iport = strtol(port, &test, 10);
+
+    if (iport < 0 || *test != '\0') {
+	fprintf(stderr, "MPD_PORT \"%s\" is not a positive integer\n", port);
+	exit(EXIT_FAILURE);
+    }
+
+    mpd.conn = mpd_newConnection(host, iport, 10);
+
+    mpd_sendCommandListOkBegin(mpd.conn);
+    mpd_sendStatusCommand(mpd.conn);
+    mpd_sendCurrentSongCommand(mpd.conn);
+    mpd_sendCommandListEnd(mpd.conn);
+
+    if ((mpd.status = mpd_getStatus(mpd.conn)) == NULL) {
+	fprintf(stderr, "%s\n", mpd.conn->errorStr);
+	mpd_closeConnection(mpd.conn);
+    }
+
+    if (mpd.status->error) {
+	printf("error: %s\n", mpd.status->error);
+    }
+
+    if (mpd.conn->error) {
+	fprintf(stderr, "%s\n", mpd.conn->errorStr);
+	mpd_closeConnection(mpd.conn);
+    }
+
+    return mpd;
+}
+
+
+static void disconnect(struct Pointer mpd)
+{
+    if (mpd.conn->error) {
+	fprintf(stderr, "%s\n", mpd.conn->errorStr);
+	mpd_closeConnection(mpd.conn);
+    }
+
+    mpd_finishCommand(mpd.conn);
+    if (mpd.conn->error) {
+	fprintf(stderr, "%s\n", mpd.conn->errorStr);
+	mpd_closeConnection(mpd.conn);
+    }
+
+    mpd_freeStatus(mpd.status);
+    mpd_closeConnection(mpd.conn);
+}
+
+
+/* function 'artist' */
+/* takes one argument, a number */
+/* multiplies the number by 3.0 */
+/* same as 'mul2', but shorter */
+
+static void artist(RESULT * result, RESULT * query)
+{
+    char *value = " ";
+    struct Pointer mpd = connect();
+
+    mpd_nextListOkCommand(mpd.conn);
+
+    while ((mpd.entity = mpd_getNextInfoEntity(mpd.conn))) {
+	mpd_Song *song = mpd.entity->info.song;
+
+	if (mpd.entity->type != MPD_INFO_ENTITY_TYPE_SONG) {
+	    mpd_freeInfoEntity(mpd.entity);
+	    continue;
+	}
+
+	if (song->artist) {
+	    value = strdup(song->artist);
+	}
+	mpd_freeInfoEntity(mpd.entity);
+    }
+
+    disconnect(mpd);
+
+    /* store result */
+    SetResult(&result, R_STRING, value);
+
+    free(value);
+}
+
+
+static void title(RESULT * result, RESULT * query)
+{
+    char *value = " ";
+    struct Pointer mpd = connect();
+
+    mpd_nextListOkCommand(mpd.conn);
+
+    while ((mpd.entity = mpd_getNextInfoEntity(mpd.conn))) {
+	mpd_Song *song = mpd.entity->info.song;
+
+	if (mpd.entity->type != MPD_INFO_ENTITY_TYPE_SONG) {
+	    mpd_freeInfoEntity(mpd.entity);
+	    continue;
+	}
+
+	if (song->title) {
+	    value = strdup(song->title);
+	}
+	mpd_freeInfoEntity(mpd.entity);
+    }
+
+    disconnect(mpd);
+
+    /* store result */
+    SetResult(&result, R_STRING, value);
+
+    free(value);
+}
+
+
+static void album(RESULT * result, RESULT * query)
+{
+    char *value = " ";
+    struct Pointer mpd = connect();
+
+    mpd_nextListOkCommand(mpd.conn);
+
+    while ((mpd.entity = mpd_getNextInfoEntity(mpd.conn))) {
+	mpd_Song *song = mpd.entity->info.song;
+
+	if (mpd.entity->type != MPD_INFO_ENTITY_TYPE_SONG) {
+	    mpd_freeInfoEntity(mpd.entity);
+	    continue;
+	}
+
+	if (song->album) {
+	    value = strdup(song->album);
+	}
+	mpd_freeInfoEntity(mpd.entity);
+    }
+
+    disconnect(mpd);
+
+    /* store result */
+    SetResult(&result, R_STRING, value);
+
+    free(value);
+}
+
+
+int plugin_init_mpd(void)
+{
+    AddFunction("mpd::artist", 0, artist);
+    AddFunction("mpd::title", 0, title);
+    AddFunction("mpd::album", 0, album);
+
+    return 0;
+}
+
+
+void plugin_exit_mpd(void)
+{
+    /* empty */
+}