From 4400489f152083227a090de586ef914bd884ef3f Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Fri, 17 Sep 2010 20:43:38 +0000
Subject: [PATCH] patch from Johan Mattson to make -I/-O options in engine
 dialog actually work (fixes #2975

git-svn-id: svn://localhost/ardour2/branches/3.0@7795 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 gtk2_ardour/engine_dialog.cc | 30 ++++++++++++++++++++++++++++++
 gtk2_ardour/engine_dialog.h  |  2 ++
 2 files changed, 32 insertions(+)

diff --git a/gtk2_ardour/engine_dialog.cc b/gtk2_ardour/engine_dialog.cc
index ef2fa67ce7..30940a1276 100644
--- a/gtk2_ardour/engine_dialog.cc
+++ b/gtk2_ardour/engine_dialog.cc
@@ -65,6 +65,10 @@ EngineControl::EngineControl ()
 	  priority_spinner (priority_adjustment),
 	  ports_adjustment (128, 8, 1024, 1, 16),
 	  ports_spinner (ports_adjustment),
+	  input_latency_adjustment (0, 0, 99999, 1),
+	  input_latency (input_latency_adjustment),
+	  output_latency_adjustment (0, 0, 99999, 1),
+	  output_latency (output_latency_adjustment),
 	  realtime_button (_("Realtime")),
 	  no_memory_lock_button (_("Do not lock memory")),
 	  unlock_memory_button (_("Unlock memory")),
@@ -584,6 +588,19 @@ EngineControl::build_command_line (vector<string>& cmd)
 			cmd.push_back ("-X raw");
 		}
 
+                double val = input_latency_adjustment.get_value();
+
+                if (val) {
+                        cmd.push_back ("-I");
+                        cmd.push_back (to_string ((uint32_t) val, std::dec));
+                }
+
+                val = output_latency_adjustment.get_value();
+                if (val) {
+                        cmd.push_back ("-O");
+                        cmd.push_back (to_string ((uint32_t) val, std::dec));
+                }
+
 	} else if (using_coreaudio) {
 
 #ifdef __APPLE__
@@ -597,6 +614,19 @@ EngineControl::build_command_line (vector<string>& cmd)
 
 		cmd.push_back ("-d");
 		cmd.push_back (device);
+
+                double val = input_latency_adjustment.get_value();
+
+                if (val) {
+                        cmd.push_back ("-I");
+                        cmd.push_back (to_string ((uint32_t) val, std::dec));
+                }
+
+                double val = output_latency_adjustment.get_value();
+                if (val) {
+                        cmd.push_back ("-O");
+                        cmd.push_back (to_string ((uint32_t) val, std::dec));
+                }
 #endif
 
 	} else if (using_oss) {
diff --git a/gtk2_ardour/engine_dialog.h b/gtk2_ardour/engine_dialog.h
index 1a3d95e636..56a0722118 100644
--- a/gtk2_ardour/engine_dialog.h
+++ b/gtk2_ardour/engine_dialog.h
@@ -55,7 +55,9 @@ class EngineControl : public Gtk::VBox {
 	Gtk::SpinButton ports_spinner;
 	Gtk::SpinButton input_channels;
 	Gtk::SpinButton output_channels;
+	Gtk::Adjustment input_latency_adjustment;
 	Gtk::SpinButton input_latency;
+	Gtk::Adjustment output_latency_adjustment;
 	Gtk::SpinButton output_latency;
 	Gtk::Label latency_label;