[rhythmbox] shell-player: add 'elapsed-nano-changed' signal

[Jonathan Matthew <jmatthew src gnome org>]

commit 8fb26c089a6d18dceee856b70c492627fa2c9ac4
Author: Jonathan Matthew <jonathan d14n org>
Date:   Fri Jun 5 23:15:44 2009 +1000

    shell-player: add 'elapsed-nano-changed' signal
    
    This is emitted on every player tick (currently 5Hz), allowing things to
    be updated more than once per second and with subsecond precision.  The
    existing elapsed-changed signal remains as it's useful too, and because
    it's part of the dbus interface.
---
 lib/rb-marshal.list     |    1 +
 shell/rb-shell-player.c |   22 ++++++++++++++++++++++
 shell/rb-shell-player.h |    1 +
 3 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/lib/rb-marshal.list b/lib/rb-marshal.list
index 46e9289..f7a26e9 100644
--- a/lib/rb-marshal.list
+++ b/lib/rb-marshal.list
@@ -22,6 +22,7 @@ VOID:DOUBLE,LONG
 VOID:UINT64
 VOID:INT,INT
 VOID:INT,INT,DOUBLE
+VOID:INT64
 VOID:OBJECT,INT,INT
 VOID:OBJECT,INT,INT,BOXED,UINT,UINT
 VOID:OBJECT,INT,POINTER
diff --git a/shell/rb-shell-player.c b/shell/rb-shell-player.c
index 23d22ab..be7c6ed 100644
--- a/shell/rb-shell-player.c
+++ b/shell/rb-shell-player.c
@@ -300,6 +300,7 @@ enum
 	PLAYING_URI_CHANGED,
 	PLAYING_SONG_PROPERTY_CHANGED,
 	MISSING_PLUGINS,
+	ELAPSED_NANO_CHANGED,
 	LAST_SIGNAL
 };
 
@@ -601,6 +602,26 @@ rb_shell_player_class_init (RBShellPlayerClass *klass)
 			      3,
 			      G_TYPE_STRV, G_TYPE_STRV, G_TYPE_CLOSURE);
 
+	/**
+	 * RBShellPlayer::elapsed-nano-changed:
+	 * @player: the #RBShellPlayer
+	 * @elapsed: the new playback position in nanoseconds
+	 *
+	 * Emitted when the playback position changes.  Only use this (as opposed to
+	 * elapsed-changed) when you require subsecond precision.  This signal will be
+	 * emitted multiple times per second.
+	 */
+	rb_shell_player_signals[ELAPSED_NANO_CHANGED] =
+		g_signal_new ("elapsed-nano-changed",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (RBShellPlayerClass, elapsed_nano_changed),
+			      NULL, NULL,
+			      rb_marshal_VOID__INT64,
+			      G_TYPE_NONE,
+			      1,
+			      G_TYPE_INT64);
+
 	g_type_class_add_private (klass, sizeof (RBShellPlayerPrivate));
 }
 
@@ -3508,6 +3529,7 @@ tick_cb (RBPlayer *mmplayer,
 		g_signal_emit (G_OBJECT (player), rb_shell_player_signals[ELAPSED_CHANGED],
 			       0, player->priv->elapsed);
 	}
+	g_signal_emit (player, rb_shell_player_signals[ELAPSED_NANO_CHANGED], 0, elapsed);
 
 	if (duration_from_player) {
 		/* XXX update duration in various things? */
diff --git a/shell/rb-shell-player.h b/shell/rb-shell-player.h
index e8351b8..105198b 100644
--- a/shell/rb-shell-player.h
+++ b/shell/rb-shell-player.h
@@ -77,6 +77,7 @@ struct _RBShellPlayerClass
 
 	void (*window_title_changed) (RBShellPlayer *player, const char *window_title);
 	void (*elapsed_changed) (RBShellPlayer *player, guint elapsed);
+	void (*elapsed_nano_changed) (RBShellPlayer *player, gint64 elapsed);
 	void (*playing_changed) (RBShellPlayer *player, gboolean playing);
 	void (*playing_source_changed) (RBShellPlayer *player, RBSource *source);
 	void (*playing_uri_changed) (RBShellPlayer *player, const char *uri);