jack: ship our own jack headers and build against them

pipewire-jack/jack/statistics.h

@@ -0,0 +1,57 @@
+/*
+*  Copyright (C) 2004 Rui Nuno Capela, Lee Revell
+*  
+*  This program is free software; you can redistribute it and/or
+*  modify it under the terms of the GNU Lesser General Public License
+*  as published by the Free Software Foundation; either version 2.1
+*  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
+*  Lesser General Public License for more details.
+*  
+*  You should have received a copy of the GNU Lesser General Public
+*  License along with this program; if not, write to the Free
+*  Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+*  02111-1307, USA.
+*
+*/
+
+#ifndef __statistics_h__
+#define __statistics_h__
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <jack/types.h>
+
+/**
+ * @return the maximum delay reported by the backend since
+ * startup or reset.  When compared to the period size in usecs, this
+ * can be used to estimate the ideal period size for a given setup.
+ */
+float jack_get_max_delayed_usecs (jack_client_t *client);
+
+/**
+ * @return the delay in microseconds due to the most recent XRUN
+ * occurrence.  This probably only makes sense when called from a @ref
+ * JackXRunCallback defined using jack_set_xrun_callback().
+ */
+float jack_get_xrun_delayed_usecs (jack_client_t *client);
+
+/**
+ * Reset the maximum delay counter.  This would be useful
+ * to estimate the effect that a change to the configuration of a running
+ * system (e.g. toggling kernel preemption) has on the delay
+ * experienced by JACK, without having to restart the JACK engine.
+ */
+void jack_reset_max_delayed_usecs (jack_client_t *client);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __statistics_h__ */