From f42bd3fe47af66ad409423d43f8bdd02db9ba864 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 5 Aug 2020 16:02:19 -0600
Subject: [PATCH] add per-thread sample rate variable and libardour method to
 update it

---
 libs/ardour/superclock.cc   | 28 ++++++++++++++++++++++++++++
 libs/ardour/wscript         |  3 ++-
 libs/temporal/superclock.cc | 24 ++++++++++++++++++++++++
 libs/temporal/wscript       |  2 +-
 4 files changed, 55 insertions(+), 2 deletions(-)
 create mode 100644 libs/ardour/superclock.cc
 create mode 100644 libs/temporal/superclock.cc

diff --git a/libs/ardour/superclock.cc b/libs/ardour/superclock.cc
new file mode 100644
index 0000000000..563129bc12
--- /dev/null
+++ b/libs/ardour/superclock.cc
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2020 Paul Davis <paul@linuxaudiosystems.com>
+ *
+ * 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 "temporal/superclock.h"
+
+#include "ardour/audioengine.h"
+
+void
+update_sample_rate ()
+{
+	Temporal::_thread_sample_rate = ARDOUR::AudioEngine::instance()->sample_rate();
+}
+
diff --git a/libs/ardour/wscript b/libs/ardour/wscript
index baf4c199a4..ce7121eaa7 100644
--- a/libs/ardour/wscript
+++ b/libs/ardour/wscript
@@ -251,7 +251,8 @@ libardour_sources = [
         'stripable.cc',
         'step_sequencer.cc',
         'strip_silence.cc',
-        'system_exec.cc',
+	'superclock.cc',
+	'system_exec.cc',
         'revision.cc',
         'rt_midibuffer.cc',
         'template_utils.cc',
diff --git a/libs/temporal/superclock.cc b/libs/temporal/superclock.cc
new file mode 100644
index 0000000000..d98883f996
--- /dev/null
+++ b/libs/temporal/superclock.cc
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2020 Paul Davis <paul@linuxaudiosystems.com>
+ *
+ * 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 "temporal/superclock.h"
+
+namespace Temporal {
+	thread_local uint32_t _thread_sample_rate = 0;
+}
+
diff --git a/libs/temporal/wscript b/libs/temporal/wscript
index 49b38eb766..b63d2b056e 100644
--- a/libs/temporal/wscript
+++ b/libs/temporal/wscript
@@ -24,7 +24,7 @@ APPNAME = 'temporal'
 VERSION = TEMPORAL_VERSION
 I18N_PACKAGE = 'libtemporal'
 
-temporal_sources = [ 'time.cc', 'bbt_time.cc', 'tempo.cc', 'timeline.cc' ]
+temporal_sources = [ 'time.cc', 'bbt_time.cc', 'tempo.cc', 'timeline.cc', 'superclock.cc' ]
 
 def options(opt):
     autowaf.set_options(opt)