From 015f345dd67474a7ca03a66f8535dedaef00e081 Mon Sep 17 00:00:00 2001
From: kevin <kevin@larke.org>
Date: Mon, 27 Dec 2021 20:24:43 -0500
Subject: [PATCH] cwIoFlow.h/cpp : Added version of 'apply_preset()' with built
 in call to 'begin_cross_fade()'

---
 cwIoFlow.cpp | 9 +++++++++
 cwIoFlow.h   | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/cwIoFlow.cpp b/cwIoFlow.cpp
index 895f126..841b9dd 100644
--- a/cwIoFlow.cpp
+++ b/cwIoFlow.cpp
@@ -405,6 +405,15 @@ cw::rc_t cw::io_flow::exec( handle_t h, const io::msg_t& msg )
   return rc;
 }
 
+cw::rc_t cw::io_flow::apply_preset( handle_t h, unsigned crossFadeMs, const char* presetLabel )
+{
+  rc_t rc;
+  if((rc = apply_preset( h, flow_cross::kNextDestId, presetLabel )) == kOkRC )
+    rc = begin_cross_fade( h, crossFadeMs );
+  
+  return rc;
+}
+
 
 cw::rc_t cw::io_flow::apply_preset( handle_t h, flow_cross::destId_t destId, const char* presetLabel )
 { return apply_preset( _handleToPtr(h)->crossFlowH, destId, presetLabel ); }
diff --git a/cwIoFlow.h b/cwIoFlow.h
index fe4da0d..4a6eb9f 100644
--- a/cwIoFlow.h
+++ b/cwIoFlow.h
@@ -13,6 +13,12 @@ namespace cw
     rc_t exec( handle_t h, const io::msg_t& msg );
 
 
+    // Apply a preset to the 'next' network instance and activate it immediately.
+    rc_t apply_preset( handle_t h, unsigned crossFadeMs, const char* presetLabel );
+    
+    // Apply a preset to the selected network instance (current or next).
+    // If the preset is applied to the 'next' network instance then use 'begin_cross_fade()' to
+    // activate the next network.
     rc_t apply_preset( handle_t h, flow_cross::destId_t destId, const char* presetLabel );
 
     rc_t set_variable_value( handle_t h, flow_cross::destId_t destId, const char* inst_label, const char* var_label, unsigned chIdx, bool value );