Code

use MPD_IDLE_QUEUE instead of deprecated MPD_IDLE_PLAYLIST flag
[ncmpc.git] / src / main.c
index ed759774430329ae027b54214448d77f340c2260..29c53a8d6c54adbef1e8abb8ec1b1509b288cb0c 100644 (file)
@@ -1,17 +1,17 @@
 /* ncmpc (Ncurses MPD Client)
  * (c) 2004-2009 The Music Player Daemon Project
  * Project homepage: http://musicpd.org
+ *
  * This program 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 of the License, or
  * (at your option) any later version.
-
+ *
  * This program 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.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 #include "config.h"
 #include "ncmpc.h"
 #include "mpdclient.h"
+#include "gidle.h"
 #include "charset.h"
 #include "options.h"
 #include "command.h"
 #include "ncu.h"
 #include "screen.h"
 #include "screen_utils.h"
+#include "screen_message.h"
 #include "strfsong.h"
 #include "i18n.h"
+#include "player_command.h"
 
 #ifndef NCMPC_MINI
 #include "conf.h"
@@ -41,6 +44,8 @@
 #include "lirc.h"
 #endif
 
+#include <mpd/client.h>
+
 #include <stdlib.h>
 #include <unistd.h>
 #include <signal.h>
 #include <locale.h>
 #endif
 
-/* time between mpd updates [s] */
+/* time between mpd updates [ms] */
 static const guint update_interval = 500;
 
 #define BUFSIZE 1024
 
-static const guint idle_interval = 500;
-
-static mpdclient_t *mpd = NULL;
-static gboolean connected = FALSE;
+static struct mpdclient *mpd = NULL;
 static GMainLoop *main_loop;
-static guint reconnect_source_id, idle_source_id, update_source_id;
+static guint reconnect_source_id, update_source_id;
 
 #ifndef NCMPC_MINI
 static guint check_key_bindings_source_id;
 #endif
 
-static const gchar *
-error_msg(const gchar *msg)
-{
-       gchar *p;
-
-       if ((p = strchr(msg, '}')) == NULL)
-               return msg;
-
-       do {
-               p++;
-       } while (*p == '}' || * p== ' ');
-
-       return p;
-}
-
-static void
-error_callback(G_GNUC_UNUSED mpdclient_t *c, gint error, const gchar *_msg)
-{
-       char *msg = utf8_to_locale(_msg);
-
-       error = error & 0xFF;
-       switch (error) {
-       case MPD_ERROR_CONNPORT:
-       case MPD_ERROR_NORESPONSE:
-               break;
-       case MPD_ERROR_ACK:
-               screen_status_printf("%s", error_msg(msg));
-               screen_bell();
-               break;
-       default:
-               screen_status_printf("%s", msg);
-               screen_bell();
-               doupdate();
-               connected = FALSE;
-       }
-
-       g_free(msg);
-}
-
 #ifndef NCMPC_MINI
 static void
 update_xterm_title(void)
 {
        static char title[BUFSIZE];
        char tmp[BUFSIZE];
-       mpd_Status *status = NULL;
-       mpd_Song *song = NULL;
+       struct mpd_status *status = NULL;
+       const struct mpd_song *song = NULL;
 
        if (mpd) {
                status = mpd->status;
@@ -120,7 +83,7 @@ update_xterm_title(void)
        }
 
        if (options.xterm_title_format && status && song &&
-           IS_PLAYING(status->state))
+           mpd_status_get_state(status) == MPD_STATE_PLAY)
                strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
        else
                g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
@@ -163,9 +126,9 @@ catch_sigcont(G_GNUC_UNUSED int sig)
 void
 sigstop(void)
 {
-  def_prog_mode();  /* save the tty modes */
-  endwin();         /* end curses mode temporarily */
-  kill(0, SIGSTOP); /* issue SIGSTOP */
+       def_prog_mode();  /* save the tty modes */
+       endwin();         /* end curses mode temporarily */
+       kill(0, SIGSTOP); /* issue SIGSTOP */
 }
 
 static guint timer_sigwinch_id;
@@ -193,9 +156,81 @@ catch_sigwinch(G_GNUC_UNUSED int sig)
        timer_sigwinch_id = g_timeout_add(100, timer_sigwinch, NULL);
 }
 
+static void
+idle_callback(enum mpd_error error,
+             G_GNUC_UNUSED enum mpd_server_error server_error,
+             const char *message, enum mpd_idle events,
+             G_GNUC_UNUSED void *ctx);
+
 static gboolean
 timer_mpd_update(gpointer data);
 
+static void
+enable_update_timer(void)
+{
+       if (update_source_id != 0)
+               return;
+
+       update_source_id = g_timeout_add(update_interval,
+                                        timer_mpd_update, NULL);
+}
+
+static void
+disable_update_timer(void)
+{
+       if (update_source_id == 0)
+               return;
+
+       g_source_remove(update_source_id);
+       update_source_id = 0;
+}
+
+static bool
+should_enable_update_timer(void)
+{
+       return (mpdclient_is_connected(mpd) &&
+               (mpd->source == NULL || /* "idle" not supported */
+                (mpd->status != NULL &&
+                 mpd_status_get_state(mpd->status) == MPD_STATE_PLAY)))
+#ifndef NCMPC_MINI
+               || options.display_time
+#endif
+               ;
+}
+
+static void
+auto_update_timer(void)
+{
+       if (should_enable_update_timer())
+               enable_update_timer();
+       else
+               disable_update_timer();
+}
+
+static void
+check_reconnect(void);
+
+static void
+do_mpd_update(void)
+{
+       if (mpdclient_is_connected(mpd) &&
+           (mpd->source == NULL || mpd->events != 0 ||
+            (mpd->status != NULL &&
+             mpd_status_get_state(mpd->status) == MPD_STATE_PLAY)))
+               mpdclient_update(mpd);
+
+#ifndef NCMPC_MINI
+       if (options.enable_xterm_title)
+               update_xterm_title();
+#endif
+
+       screen_update(mpd);
+       mpd->events = 0;
+
+       mpdclient_put_connection(mpd);
+       check_reconnect();
+}
+
 /**
  * This timer is installed when the connection to the MPD server is
  * broken.  It tries to recover by reconnecting periodically.
@@ -203,64 +238,127 @@ timer_mpd_update(gpointer data);
 static gboolean
 timer_reconnect(G_GNUC_UNUSED gpointer data)
 {
-       int ret;
+       bool success;
+       struct mpd_connection *connection;
 
-       if (connected)
-               return FALSE;
+       assert(!mpdclient_is_connected(mpd));
+
+       reconnect_source_id = 0;
 
        screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
                             options.host, get_key_names(CMD_QUIT,0) );
        doupdate();
 
        mpdclient_disconnect(mpd);
-       ret = mpdclient_connect(mpd,
-                               options.host, options.port,
-                               1.5,
-                               options.password);
-       if (ret != 0) {
+       success = mpdclient_connect(mpd,
+                                   options.host, options.port,
+                                   1.5,
+                                   options.password);
+       if (!success) {
                /* try again in 5 seconds */
-               g_timeout_add(5000, timer_reconnect, NULL);
+               reconnect_source_id = g_timeout_add(5000,
+                                                   timer_reconnect, NULL);
                return FALSE;
        }
 
+       connection = mpdclient_get_connection(mpd);
+
 #ifndef NCMPC_MINI
        /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
-       if (MPD_VERSION_LT(mpd, 0, 11, 0)) {
+       if (mpd_connection_cmp_server_version(connection, 0, 12, 0) < 0) {
+               const unsigned *version =
+                       mpd_connection_get_server_version(connection);
                screen_status_printf(_("Error: MPD version %d.%d.%d is to old (%s needed)"),
-                                    mpd->connection->version[0],
-                                    mpd->connection->version[1],
-                                    mpd->connection->version[2],
-                                    "0.11.0");
+                                    version[0], version[1], version[2],
+                                    "0.12.0");
                mpdclient_disconnect(mpd);
                doupdate();
 
                /* try again after 30 seconds */
-               g_timeout_add(30000, timer_reconnect, NULL);
+               reconnect_source_id = g_timeout_add(30000,
+                                                   timer_reconnect, NULL);
                return FALSE;
        }
 #endif
 
-       screen_status_printf(_("Connected to %s"), options.host);
-       doupdate();
+       if (mpd_connection_cmp_server_version(connection,
+                                             0, 14, 0) >= 0)
+               mpd->source = mpd_glib_new(connection,
+                                          idle_callback, mpd);
 
-       connected = TRUE;
+       screen_status_printf(_("Connected to %s"),
+                            options.host != NULL
+                            ? options.host : "localhost");
+       doupdate();
 
        /* update immediately */
-       g_timeout_add(1, timer_mpd_update, GINT_TO_POINTER(FALSE));
+       mpd->events = MPD_IDLE_DATABASE|MPD_IDLE_STORED_PLAYLIST|
+               MPD_IDLE_QUEUE|MPD_IDLE_PLAYER|MPD_IDLE_MIXER|MPD_IDLE_OUTPUT|
+               MPD_IDLE_OPTIONS|MPD_IDLE_UPDATE;
+
+       do_mpd_update();
+
+       auto_update_timer();
 
-       reconnect_source_id = 0;
        return FALSE;
+}
 
+static void
+check_reconnect(void)
+{
+       if (!mpdclient_is_connected(mpd) && reconnect_source_id == 0)
+               /* reconnect when the connection is lost */
+               reconnect_source_id = g_timeout_add(1000, timer_reconnect,
+                                                   NULL);
 }
 
-static gboolean
-timer_mpd_update(gpointer data)
+/**
+ * This function is called by the gidle.c library when MPD sends us an
+ * idle event (or when the connectiond dies).
+ */
+static void
+idle_callback(enum mpd_error error, enum mpd_server_error server_error,
+             const char *message, enum mpd_idle events,
+             void *ctx)
 {
-       if (connected)
-               mpdclient_update(mpd);
-       else if (reconnect_source_id == 0)
+       struct mpdclient *c = ctx;
+       struct mpd_connection *connection;
+
+       c->idle = false;
+
+       connection = mpdclient_get_connection(c);
+       assert(connection != NULL);
+
+       if (error != MPD_ERROR_SUCCESS) {
+               char *allocated;
+
+               if (error == MPD_ERROR_SERVER &&
+                   server_error == MPD_SERVER_ERROR_UNKNOWN_CMD) {
+                       /* the "idle" command is not supported - fall
+                          back to timer based polling */
+                       mpd_glib_free(c->source);
+                       c->source = NULL;
+                       auto_update_timer();
+                       return;
+               }
+
+               if (error == MPD_ERROR_SERVER)
+                       message = allocated = utf8_to_locale(message);
+               else
+                       allocated = NULL;
+               screen_status_message(message);
+               g_free(allocated);
+               screen_bell();
+               doupdate();
+
+               mpdclient_disconnect(c);
                reconnect_source_id = g_timeout_add(1000, timer_reconnect,
                                                    NULL);
+               return;
+       }
+
+       c->events |= events;
+       mpdclient_update(c);
 
 #ifndef NCMPC_MINI
        if (options.enable_xterm_title)
@@ -268,32 +366,38 @@ timer_mpd_update(gpointer data)
 #endif
 
        screen_update(mpd);
+       c->events = 0;
 
-       return GPOINTER_TO_INT(data);
+       mpdclient_put_connection(c);
+       check_reconnect();
+       auto_update_timer();
 }
 
-/**
- * This idle timer is invoked when the user hasn't typed a key for
- * 500ms.  It is used for delayed seeking.
- */
 static gboolean
-timer_idle(G_GNUC_UNUSED gpointer data)
+timer_mpd_update(G_GNUC_UNUSED gpointer data)
 {
-       screen_idle(mpd);
-       return TRUE;
+       do_mpd_update();
+
+       if (should_enable_update_timer())
+               return true;
+       else {
+               update_source_id = 0;
+               return false;
+       }
 }
 
 void begin_input_event(void)
 {
-       /* remove the idle timeout; add it later with fresh interval */
-       g_source_remove(idle_source_id);
 }
 
 void end_input_event(void)
 {
        screen_update(mpd);
+       mpd->events = 0;
 
-       idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
+       mpdclient_put_connection(mpd);
+       check_reconnect();
+       auto_update_timer();
 }
 
 int do_input_event(command_t cmd)
@@ -305,13 +409,9 @@ int do_input_event(command_t cmd)
 
        screen_cmd(mpd, cmd);
 
-       if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN) {
+       if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
                /* make sure we don't update the volume yet */
-               g_source_remove(update_source_id);
-               update_source_id = g_timeout_add(update_interval,
-                                                timer_mpd_update,
-                                                GINT_TO_POINTER(TRUE));
-       }
+               disable_update_timer();
 
        return 0;
 }
@@ -484,7 +584,6 @@ main(int argc, const char *argv[])
 
        /* create mpdclient instance */
        mpd = mpdclient_new();
-       mpdclient_install_error_callback(mpd, error_callback);
 
        /* initialize curses */
        screen_init(mpd);
@@ -508,13 +607,11 @@ main(int argc, const char *argv[])
        /* attempt to connect */
        reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
 
-       update_source_id = g_timeout_add(update_interval,
-                                        timer_mpd_update,
-                                        GINT_TO_POINTER(TRUE));
+       auto_update_timer();
+
 #ifndef NCMPC_MINI
        check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
 #endif
-       idle_source_id = g_timeout_add(idle_interval, timer_idle, NULL);
 
        screen_paint(mpd);
 
@@ -522,8 +619,12 @@ main(int argc, const char *argv[])
 
        /* cleanup */
 
-       g_source_remove(update_source_id);
-       g_source_remove(idle_source_id);
+       cancel_seek_timer();
+
+       disable_update_timer();
+
+       if (reconnect_source_id != 0)
+               g_source_remove(reconnect_source_id);
 
 #ifndef NCMPC_MINI
        if (check_key_bindings_source_id != 0)