From 522f28b3c5b5e93b924ef05cf64368a5a1a033ad Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 21 Feb 2019 01:34:58 +0100
Subject: Add API to check for ongoing de-click

---
 libs/ardour/ardour/disk_reader.h |  4 +---
 libs/ardour/ardour/session.h     |  1 +
 libs/ardour/disk_reader.cc       |  8 ++++++++
 libs/ardour/session_transport.cc | 12 ++++++++++++
 4 files changed, 22 insertions(+), 3 deletions(-)

(limited to 'libs/ardour')

diff --git a/libs/ardour/ardour/disk_reader.h b/libs/ardour/ardour/disk_reader.h
index f397f19389..30a170b386 100644
--- a/libs/ardour/ardour/disk_reader.h
+++ b/libs/ardour/ardour/disk_reader.h
@@ -93,9 +93,7 @@ public:
 	void playlist_modified ();
 	void reset_tracker ();
 
-	bool declick_in_progress () const {
-		return _declick_amp.gain() != 0; // declick-out
-	}
+	bool declick_in_progress () const;
 
 	static void set_midi_readahead_samples (samplecnt_t samples_ahead) { midi_readahead = samples_ahead; }
 
diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index e41c455cb4..d9749f22fe 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -1647,6 +1647,7 @@ private:
 	int           start_midi_thread ();
 
 	bool should_ignore_transport_request (TransportRequestSource, TransportRequestType) const;
+	bool declick_in_progress () const;
 
 	void set_play_loop (bool yn, double speed);
 	void unset_play_loop ();
diff --git a/libs/ardour/disk_reader.cc b/libs/ardour/disk_reader.cc
index 9c96dbc401..d6be873d83 100644
--- a/libs/ardour/disk_reader.cc
+++ b/libs/ardour/disk_reader.cc
@@ -463,6 +463,14 @@ DiskReader::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_samp
 	// DEBUG_TRACE (DEBUG::Butler, string_compose ("%1 reader run, needs butler = %2\n", name(), _need_butler));
 }
 
+bool
+DiskReader::declick_in_progress () const {
+	/* TODO use an atomic-get.
+	 * this may be called from the butler thread
+	 */
+	return _declick_amp.gain() != 0; // declick-out
+}
+
 bool
 DiskReader::pending_overwrite () const {
 	return g_atomic_int_get (&_pending_overwrite) != 0;
diff --git a/libs/ardour/session_transport.cc b/libs/ardour/session_transport.cc
index 17a0f4de8d..ff8aaa101e 100644
--- a/libs/ardour/session_transport.cc
+++ b/libs/ardour/session_transport.cc
@@ -578,6 +578,18 @@ Session::non_realtime_overwrite (int on_entry, bool& finished)
 	}
 }
 
+bool
+Session::declick_in_progress () const
+{
+	boost::shared_ptr<RouteList> rl = routes.reader();
+	for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
+		boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
+		if (tr && tr->declick_in_progress ()) {
+			return true;
+		}
+	}
+	return false;
+}
 
 void
 Session::non_realtime_locate ()
-- 
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