Port level meters to trunk

git-svn-id: svn://localhost/ardour2/trunk@2802 d708f5d6-7413-0410-9779-e7cbd77b26cf

18 files changed, 522 insertions, 22 deletions

diff --git a/gtk2_ardour/SConscript b/gtk2_ardour/SConscript
index 00d15d29f1..388a416143 100644
--- a/gtk2_ardour/SConscript
+++ b/gtk2_ardour/SConscript
@@ -174,6 +174,7 @@ keyboard.cc
 keyeditor.cc
 ladspa_pluginui.cc
 latency_gui.cc
+level_meter.cc
 location_ui.cc
 main.cc
 marker.cc
diff --git a/gtk2_ardour/ardour.menus b/gtk2_ardour/ardour.menus
index 0c374bbd67..6bcc0d7898 100644
--- a/gtk2_ardour/ardour.menus
+++ b/gtk2_ardour/ardour.menus
@@ -385,6 +385,7 @@
                <menuitem action='GainReduceFastTransport'/>
 	       <menuitem action='PrimaryClockDeltaEditCursor'/>
 	       <menuitem action='SecondaryClockDeltaEditCursor'/>
+			<menuitem action='ShowTrackMeters'/>
 	       <menuitem action='OnlyCopyImportedFiles'/>
 	       <separator/>
          </menu>
diff --git a/gtk2_ardour/ardour2_ui_default.conf b/gtk2_ardour/ardour2_ui_default.conf
index 2d2c0fb73c..43c6027563 100644
--- a/gtk2_ardour/ardour2_ui_default.conf
+++ b/gtk2_ardour/ardour2_ui_default.conf
@@ -83,6 +83,10 @@
     <Option name="trim handle" value="1900ff44"/>
     <Option name="edit point" value="0000ffff"/>
     <Option name="play head" value="ff0000ff"/>
+	<Option name="MeterColorBase" value="0000ffff"/>
+    <Option name="MeterColorMid" value="73f9baff"/>
+    <Option name="MeterColorTop" value="00fd5dff"/>
+    <Option name="MeterColorClip" value="ff0000ff"/>
     <Option name="midi select rect outline" value="5555ffff"/>
     <Option name="midi select rect fill" value="8888ff88"/>
     <Option name="midi note outline min" value="22ff22b0"/>
diff --git a/gtk2_ardour/ardour_ui.h b/gtk2_ardour/ardour_ui.h
index 74400396af..0cbc9935bf 100644
--- a/gtk2_ardour/ardour_ui.h
+++ b/gtk2_ardour/ardour_ui.h
@@ -723,6 +723,7 @@ class ARDOUR_UI : public Gtkmm2ext::UI
 	void toggle_RegionEquivalentsOverlap ();
 	void toggle_PrimaryClockDeltaEditCursor ();
 	void toggle_SecondaryClockDeltaEditCursor ();
+	void toggle_ShowTrackMeters ();
 	void toggle_only_copy_imported_files ();
 
 	void mtc_port_changed ();
diff --git a/gtk2_ardour/ardour_ui_ed.cc b/gtk2_ardour/ardour_ui_ed.cc
index 7f4a0a1e69..38aae959cf 100644
--- a/gtk2_ardour/ardour_ui_ed.cc
+++ b/gtk2_ardour/ardour_ui_ed.cc
@@ -418,8 +418,9 @@ ARDOUR_UI::install_actions ()
 	ActionManager::register_toggle_action (option_actions, X_("GainReduceFastTransport"), _("-12dB gain reduce ffwd/rewind"), mem_fun (*this, &ARDOUR_UI::toggle_GainReduceFastTransport));
 	ActionManager::register_toggle_action (option_actions, X_("LatchedRecordEnable"), _("Rec-enable stays engaged at stop"), mem_fun (*this, &ARDOUR_UI::toggle_LatchedRecordEnable));
 	ActionManager::register_toggle_action (option_actions, X_("RegionEquivalentsOverlap"), _("Region equivalents overlap"), mem_fun (*this, &ARDOUR_UI::toggle_RegionEquivalentsOverlap));
-	ActionManager::register_toggle_action (option_actions, X_("PrimaryClockDeltaEditCursor"), _("Primary Clock delta to edit cursor"), mem_fun (*this, &ARDOUR_UI::toggle_PrimaryClockDeltaEditCursor));
-	ActionManager::register_toggle_action (option_actions, X_("SecondaryClockDeltaEditCursor"), _("Secondary Clock delta to edit cursor"), mem_fun (*this, &ARDOUR_UI::toggle_SecondaryClockDeltaEditCursor));	
+	ActionManager::register_toggle_action (option_actions, X_("PrimaryClockDeltaEditCursor"), _("Primary Clock delta to edit point"), mem_fun (*this, &ARDOUR_UI::toggle_PrimaryClockDeltaEditCursor));
+	ActionManager::register_toggle_action (option_actions, X_("SecondaryClockDeltaEditCursor"), _("Secondary Clock delta to edit point"), mem_fun (*this, &ARDOUR_UI::toggle_SecondaryClockDeltaEditCursor));	
+	ActionManager::register_toggle_action (option_actions, X_("ShowTrackMeters"), _("Display Editor Meters"), mem_fun (*this, &ARDOUR_UI::toggle_ShowTrackMeters));	
 	ActionManager::register_toggle_action (option_actions, X_("OnlyCopyImportedFiles"), _("Always copy imported files"), mem_fun (*this, &ARDOUR_UI::toggle_only_copy_imported_files));	
 
 	RadioAction::Group denormal_group;
@@ -464,6 +465,7 @@ ARDOUR_UI::install_actions ()
 	act = ActionManager::register_toggle_action (option_actions, X_("DoNotRunPluginsWhileRecording"), _("Do not run plugins while recording"), mem_fun (*this, &ARDOUR_UI::toggle_DoNotRunPluginsWhileRecording));
 	ActionManager::session_sensitive_actions.push_back (act);
 
+	
 	act = ActionManager::register_toggle_action (option_actions, X_("LatchedSolo"), _("Latched solo"), mem_fun (*this, &ARDOUR_UI::toggle_LatchedSolo));
 	ActionManager::session_sensitive_actions.push_back (act);
 	act = ActionManager::register_toggle_action (option_actions, X_("ShowSoloMutes"), _("Show solo muting"), mem_fun (*this, &ARDOUR_UI::toggle_ShowSoloMutes));
diff --git a/gtk2_ardour/ardour_ui_options.cc b/gtk2_ardour/ardour_ui_options.cc
index b63d17266b..56c4ac649f 100644
--- a/gtk2_ardour/ardour_ui_options.cc
+++ b/gtk2_ardour/ardour_ui_options.cc
@@ -511,6 +511,12 @@ ARDOUR_UI::toggle_SecondaryClockDeltaEditCursor()
 }
 
 void
+ARDOUR_UI::toggle_ShowTrackMeters()
+{
+	ActionManager::toggle_config_state ("options", "ShowTrackMeters", &Configuration::set_show_track_meters, &Configuration::get_show_track_meters);
+}
+
+void
 ARDOUR_UI::mtc_port_changed ()
 {
 	bool have_mtc;
diff --git a/gtk2_ardour/canvas_vars.h b/gtk2_ardour/canvas_vars.h
index c0822d8e9c..5c682c5aa1 100644
--- a/gtk2_ardour/canvas_vars.h
+++ b/gtk2_ardour/canvas_vars.h
@@ -80,6 +80,10 @@ CANVAS_VARIABLE(canvasvar_TrimHandleLocked, "trim handle locked")
 CANVAS_VARIABLE(canvasvar_TrimHandle, "trim handle")
 CANVAS_VARIABLE(canvasvar_EditPoint, "edit point")
 CANVAS_VARIABLE(canvasvar_PlayHead, "play head")
+CANVAS_VARIABLE(canvasvar_MeterColorBase, "MeterColorBase")
+CANVAS_VARIABLE(canvasvar_MeterColorMid, "MeterColorMid")
+CANVAS_VARIABLE(canvasvar_MeterColorTop, "MeterColorTop")
+CANVAS_VARIABLE(canvasvar_MeterColorClip, "MeterColorClip")
 CANVAS_VARIABLE(canvasvar_MidiSelectRectOutline, "midi select rect outline")
 CANVAS_VARIABLE(canvasvar_MidiSelectRectFill, "midi select rect fill")
 CANVAS_VARIABLE(canvasvar_MidiNoteOutlineMin, "midi note outline min")
diff --git a/gtk2_ardour/editor.h b/gtk2_ardour/editor.h
index 2acf76fc6c..bd0f91ad21 100644
--- a/gtk2_ardour/editor.h
+++ b/gtk2_ardour/editor.h
@@ -2035,6 +2035,14 @@ class Editor : public PublicEditor
 	RegionSelection tmp_regions;
 	
 	RegionSelection& get_regions_for_action ();
+
+	sigc::connection fast_screen_update_connection;
+	gint start_updating ();
+	gint stop_updating ();
+	void toggle_meter_updating();
+	void fast_update_strips ();
+
+	bool meters_running;
 };
 
 #endif /* __ardour_editor_h__ */
diff --git a/gtk2_ardour/editor_actions.cc b/gtk2_ardour/editor_actions.cc
index 5a0542f5d1..8b607f5080 100644
--- a/gtk2_ardour/editor_actions.cc
+++ b/gtk2_ardour/editor_actions.cc
@@ -1208,7 +1208,9 @@ Editor::parameter_changed (const char* parameter_name)
 	} else if (PARAM_IS ("subframes-per-frame")) {
 		update_subframes_per_frame ();
 		update_just_smpte ();
-	}
+	} else if (PARAM_IS ("show-track-meters")) {
+		toggle_meter_updating();
+ 	}
 
 #undef PARAM_IS
 }
diff --git a/gtk2_ardour/editor_audiotrack.cc b/gtk2_ardour/editor_audiotrack.cc
index 87fa8a06b8..43f63eed79 100644
--- a/gtk2_ardour/editor_audiotrack.cc
+++ b/gtk2_ardour/editor_audiotrack.cc
@@ -20,9 +20,11 @@
 #include <ardour/location.h>
 #include <ardour/audio_diskstream.h>
 
+#include "ardour_ui.h"
 #include "editor.h"
 #include "editing.h"
 #include "audio_time_axis.h"
+#include "route_time_axis.h"
 #include "audio_region_view.h"
 #include "selection.h"
 
@@ -91,3 +93,68 @@ Editor::set_show_waveforms_recording (bool yn)
 		}
 	}
 }
+
+gint
+Editor::start_updating ()
+{
+	RouteTimeAxisView* rtv;
+
+	//cerr << "Editor::start_updating () called" << endl;//DEBUG
+	if (is_mapped() && session) {
+		for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+			if ((rtv = dynamic_cast<RouteTimeAxisView*>(*i)) != 0) {
+				rtv->reset_meter ();
+			}
+		}
+	}
+
+	if (!meters_running) {
+		fast_screen_update_connection = ARDOUR_UI::SuperRapidScreenUpdate.connect (mem_fun(*this, &Editor::fast_update_strips));
+		meters_running = true;
+	}
+    return 0;
+}
+
+gint
+Editor::stop_updating ()
+{
+	RouteTimeAxisView* rtv;
+	
+	meters_running = false;
+	fast_screen_update_connection.disconnect();
+	//cerr << "Editor::stop_updating () called" << endl;//DEBUG
+	if (is_mapped() && session) {
+		for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+			if ((rtv = dynamic_cast<RouteTimeAxisView*>(*i)) != 0) {
+				rtv->hide_meter ();
+			}
+		}
+	}
+
+    return 0;
+}
+
+void
+Editor::toggle_meter_updating()
+{
+	if (Config->get_show_track_meters()) {
+		start_updating();
+	} else {
+		stop_updating ();
+	}
+}
+
+void
+Editor::fast_update_strips ()
+{
+	RouteTimeAxisView* rtv;
+
+	if (is_mapped() && session) {
+		for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+			if ((rtv = dynamic_cast<RouteTimeAxisView*>(*i)) != 0) {
+				rtv->fast_update ();
+			}
+		}
+	}
+}
+
diff --git a/gtk2_ardour/gain_meter.cc b/gtk2_ardour/gain_meter.cc
index 9b4823c90c..dae51935ec 100644
--- a/gtk2_ardour/gain_meter.cc
+++ b/gtk2_ardour/gain_meter.cc
@@ -77,7 +77,8 @@ GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
 	  // 0.781787 is the value needed for gain to be set to 0.
 	  gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
 	  gain_automation_style_button (""),
-	  gain_automation_state_button ("")
+	  gain_automation_state_button (""),
+	  regular_meter_width(5)
 	
 {
 	if (slider == 0) {
@@ -235,7 +236,7 @@ GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
 }
 
 void
-GainMeter::set_width (Width w)
+GainMeter::set_width (Width w, int len)
 {
 	switch (w) {
 	case Wide:
@@ -247,7 +248,7 @@ GainMeter::set_width (Width w)
 	}
 
 	_width = w;
-	setup_meters ();
+	setup_meters (len);
 }
 
 Glib::RefPtr<Gdk::Pixmap>
@@ -432,7 +433,7 @@ GainMeter::hide_all_meters ()
 }
 
 void
-GainMeter::setup_meters ()
+GainMeter::setup_meters (int len)
 {
 	uint32_t nmeters = _io->n_outputs().n_total();
 	guint16 width;
@@ -483,11 +484,11 @@ GainMeter::setup_meters ()
 	}
 
 	for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
-		if (meters[n].width != width) {
+		if (meters[n].width != width || meters[n].length != len) {
 			delete meters[n].meter;
-			meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical);
+			meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len);
 			meters[n].width = width;
-
+			meters[n].length = len;
 			meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 			meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
 		}
diff --git a/gtk2_ardour/gain_meter.h b/gtk2_ardour/gain_meter.h
index 3839221e73..969757313c 100644
--- a/gtk2_ardour/gain_meter.h
+++ b/gtk2_ardour/gain_meter.h
@@ -67,8 +67,8 @@ class GainMeter : public Gtk::VBox
 
 	void effective_gain_display ();
 
-	void set_width (Width);
-	void setup_meters ();
+	void set_width (Width, int len=0);
+	void setup_meters (int len=0);
 
 	int get_gm_width ();
 
@@ -129,17 +129,19 @@ class GainMeter : public Gtk::VBox
 
 	struct MeterInfo {
 	    Gtkmm2ext::FastMeter *meter;
-	    gint16          width;   
+	    gint16          width;
+		int				length;
 	    bool            packed;
 	    
 	    MeterInfo() { 
 		    meter = 0;
 		    width = 0;
+			length = 0;
 		    packed = false;
 	    }
 	};
 
-	static const guint16 regular_meter_width = 5;
+	guint16 regular_meter_width;
 	static const guint16 thin_meter_width = 2;
 	vector<MeterInfo>    meters;
 	float       max_peak;
diff --git a/gtk2_ardour/ladspa_pluginui.cc b/gtk2_ardour/ladspa_pluginui.cc
index ad1f8fbc7e..f4123c7d8c 100644
--- a/gtk2_ardour/ladspa_pluginui.cc
+++ b/gtk2_ardour/ladspa_pluginui.cc
@@ -517,7 +517,7 @@ LadspaPluginUI::build_control_ui (guint32 port_index, boost::shared_ptr<Automati
 		MeterInfo * info = new MeterInfo(port_index);
  		control_ui->meterinfo = info;
 		
-		info->meter = new FastMeter (5, 100, FastMeter::Vertical);
+		info->meter = new FastMeter (5, 5, FastMeter::Vertical);
 
 		info->min_unbound = desc.min_unbound;
 		info->max_unbound = desc.max_unbound;
diff --git a/gtk2_ardour/level_meter.cc b/gtk2_ardour/level_meter.cc
new file mode 100644
index 0000000000..f4f8e8952f
--- /dev/null
+++ b/gtk2_ardour/level_meter.cc
@@ -0,0 +1,223 @@
+/*
+  Copyright (C) 2002 Paul Davis
+
+  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <limits.h>
+
+#include <ardour/io.h>
+#include <ardour/route.h>
+#include <ardour/route_group.h>
+#include <ardour/session.h>
+#include <ardour/session_route.h>
+#include <ardour/dB.h>
+
+#include <gtkmm2ext/utils.h>
+#include <gtkmm2ext/fastmeter.h>
+#include <gtkmm2ext/stop_signal.h>
+#include <gtkmm2ext/barcontroller.h>
+#include <midi++/manager.h>
+#include <pbd/fastlog.h>
+
+#include "ardour_ui.h"
+#include "level_meter.h"
+#include "utils.h"
+#include "logmeter.h"
+#include "gui_thread.h"
+#include "keyboard.h"
+#include "public_editor.h"
+
+#include <ardour/session.h>
+#include <ardour/route.h>
+#include <ardour/meter.h>
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+using namespace Gtkmm2ext;
+using namespace Gtk;
+using namespace sigc;
+using namespace std;
+
+//sigc::signal<void> LevelMeter::ResetAllPeakDisplays;
+//sigc::signal<void,RouteGroup*> LevelMeter::ResetGroupPeakDisplays;
+
+
+LevelMeter::LevelMeter (boost::shared_ptr<IO> io, Session& s)
+	: _io (io),
+	  _session (s)
+	
+{
+	set_spacing (1);
+	Config->ParameterChanged.connect (mem_fun (*this, &LevelMeter::parameter_changed));
+	UI::instance()->theme_changed.connect (mem_fun(*this, &LevelMeter::on_theme_changed));
+	ColorsChanged.connect (mem_fun (*this, &LevelMeter::color_handler));
+}
+
+void
+LevelMeter::on_theme_changed()
+{
+	style_changed = true;
+}
+
+LevelMeter::~LevelMeter ()
+{
+	for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
+		if ((*i).meter) {
+			delete (*i).meter;
+		}
+	}
+}
+
+void
+LevelMeter::update_meters ()
+{
+	vector<MeterInfo>::iterator i;
+	uint32_t n;
+	float peak, mpeak;
+	
+	for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
+		if ((*i).packed) {
+			peak = _io->peak_meter().peak_power (n);
+			(*i).meter->set (log_meter (peak));
+			mpeak = _io->peak_meter().max_peak_power(n);
+		}
+	}
+}
+
+void
+LevelMeter::parameter_changed(const char* parameter_name)
+{
+#define PARAM_IS(x) (!strcmp (parameter_name, (x)))
+
+	ENSURE_GUI_THREAD (bind (mem_fun(*this, &LevelMeter::parameter_changed), parameter_name));
+
+	if (PARAM_IS ("meter-hold")) {
+	
+		vector<MeterInfo>::iterator i;
+		uint32_t n;
+		
+		for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
+			
+			(*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
+		}
+	}
+
+#undef PARAM_IS
+}
+
+void
+LevelMeter::hide_all_meters ()
+{
+
+	for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
+		if ((*i).packed) {
+			remove (*((*i).meter));
+			(*i).packed = false;
+		}
+	}
+}
+
+void
+LevelMeter::setup_meters (int len)
+{
+	uint32_t nmeters = _io->n_outputs().n_total();
+	guint16 width;
+
+	hide_all_meters ();
+
+	Route* r;
+
+	if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
+
+		switch (r->meter_point()) {
+		case MeterInput:
+			nmeters = r->n_inputs().n_total();
+			break;
+		case MeterPreFader:
+			nmeters = r->pre_fader_streams().n_total();
+			break;
+		case MeterPostFader:
+			nmeters = r->n_outputs().n_total();
+			break;
+		}
+
+	} else {
+
+		nmeters = _io->n_outputs().n_total();
+
+	}
+
+	if (nmeters == 0) {
+		return;
+	}
+
+	if (nmeters <= 2) {
+		width = regular_meter_width;
+	} else {
+		width = thin_meter_width;
+	}
+
+	while (meters.size() < nmeters) {
+		meters.push_back (MeterInfo());
+	}
+
+
+	int b = ARDOUR_UI::config()->canvasvar_MeterColorBase.get();
+	int m = ARDOUR_UI::config()->canvasvar_MeterColorMid.get();
+	int t = ARDOUR_UI::config()->canvasvar_MeterColorTop.get();
+	int c = ARDOUR_UI::config()->canvasvar_MeterColorClip.get();
+
+	//cerr << "LevelMeter::setup_meters() called color_changed = " << color_changed << " colors: " << endl;//DEBUG
+
+	for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
+		if (meters[n].width != width || meters[n].length != len || color_changed) {
+			delete meters[n].meter;
+			meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len, b, m, t, c);
+			//cerr << "LevelMeter::setup_meters() w:l = " << width << ":" << len << endl;//DEBUG
+			meters[n].width = width;
+			meters[n].length = len;
+			meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
+		}
+
+		pack_end (*meters[n].meter, false, false);
+		meters[n].meter->show_all ();
+		meters[n].packed = true;
+	}
+	show();
+	color_changed = false;
+}	
+
+void LevelMeter::clear_meters ()
+{
+	for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
+		(*i).meter->clear();
+	}
+}
+
+void LevelMeter::hide_meters ()
+{
+	hide_all_meters();
+}
+
+void
+LevelMeter::color_handler ()
+{
+	color_changed = true;
+}
+
diff --git a/gtk2_ardour/level_meter.h b/gtk2_ardour/level_meter.h
new file mode 100644
index 0000000000..dfae72a576
--- /dev/null
+++ b/gtk2_ardour/level_meter.h
@@ -0,0 +1,109 @@
+/*
+    Copyright (C) 2002 Paul Davis
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_gtk_track_meter_h__
+#define __ardour_gtk_track_meter_h__
+
+#include <vector>
+#include <map>
+
+#include <gtkmm/box.h>
+#include <gtkmm/adjustment.h>
+#include <gtkmm/frame.h>
+#include <gtkmm/eventbox.h>
+#include <gtkmm/button.h>
+#include <gtkmm/table.h>
+#include <gtkmm/drawingarea.h>
+
+#include <ardour/types.h>
+
+#include <gtkmm2ext/click_box.h>
+#include <gtkmm2ext/focus_entry.h>
+#include <gtkmm2ext/slider_controller.h>
+
+#include "enums.h"
+
+namespace ARDOUR {
+	class IO;
+	class Session;
+	class Route;
+	class RouteGroup;
+}
+namespace Gtkmm2ext {
+	class FastMeter;
+	class BarController;
+}
+namespace Gtk {
+	class Menu;
+}
+
+class LevelMeter : public Gtk::HBox
+{
+  public:
+	LevelMeter (boost::shared_ptr<ARDOUR::IO>, ARDOUR::Session&);
+	~LevelMeter ();
+
+	void update_gain_sensitive ();
+
+	void update_meters ();
+	void update_meters_falloff ();
+	void clear_meters ();
+	void hide_meters ();
+	void setup_meters (int len=0);
+
+  private:
+
+	//friend class MixerStrip;
+	boost::shared_ptr<ARDOUR::IO> _io;
+	ARDOUR::Session& _session;
+
+	Width                       _width;
+
+	struct MeterInfo {
+	    Gtkmm2ext::FastMeter *meter;
+	    gint16          width;
+		int				length;   
+	    bool            packed;
+	    
+	    MeterInfo() { 
+		    meter = 0;
+		    width = 0;
+			length = 0;
+		    packed = false;
+	    }
+	};
+
+	static const guint16 regular_meter_width = 3;
+	static const guint16 thin_meter_width = 2;
+	vector<MeterInfo>    meters;
+
+	//Gtk::HBox   meter_packer;
+	
+	void hide_all_meters ();
+
+	void parameter_changed (const char*);
+
+	void on_theme_changed ();
+	bool style_changed;
+	bool color_changed;
+	void color_handler ();
+};
+
+#endif /* __ardour_gtk_track_meter_h__ */
+
diff --git a/gtk2_ardour/route_time_axis.cc b/gtk2_ardour/route_time_axis.cc
index 38e5a4c330..f654a3056c 100644
--- a/gtk2_ardour/route_time_axis.cc
+++ b/gtk2_ardour/route_time_axis.cc
@@ -93,9 +93,11 @@ RouteTimeAxisView::RouteTimeAxisView (PublicEditor& ed, Session& sess, boost::sh
 	  playlist_button (_("p")), 
 	  size_button (_("h")), // height
 	  automation_button (_("a")),
-	  visual_button (_("v"))
-
+	  visual_button (_("v")),
+	  lm (rt, sess)
 {
+	lm.set_no_show_all();
+	lm.setup_meters(50);
 	_has_state = true;
 	playlist_menu = 0;
 	playlist_action_menu = 0;
@@ -145,12 +147,17 @@ RouteTimeAxisView::RouteTimeAxisView (PublicEditor& ed, Session& sess, boost::sh
 
 		rec_enable_button->signal_button_press_event().connect (mem_fun(*this, &RouteUI::rec_enable_press), false);
 		rec_enable_button->signal_button_release_event().connect (mem_fun(*this, &RouteUI::rec_enable_release));
-		controls_table.attach (*rec_enable_button, 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
+		controls_table.attach (*rec_enable_button, 4, 5, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 		ARDOUR_UI::instance()->tooltips().set_tip(*rec_enable_button, _("Record"));
 	}
 
-	controls_table.attach (*mute_button, 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
-	controls_table.attach (*solo_button, 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::FILL|Gtk::EXPAND, 0, 0);
+	controls_hbox.pack_start(lm, false, false);
+	_route->meter_change.connect (mem_fun(*this, &RouteTimeAxisView::meter_changed));
+	_route->input_changed.connect (mem_fun(*this, &RouteTimeAxisView::io_changed));
+	_route->output_changed.connect (mem_fun(*this, &RouteTimeAxisView::io_changed));
+
+	controls_table.attach (*mute_button, 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
+	controls_table.attach (*solo_button, 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 
 	controls_table.attach (edit_group_button, 6, 7, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 
@@ -731,6 +738,7 @@ RouteTimeAxisView::show_selection (TimeSelection& ts)
 void
 RouteTimeAxisView::set_height (TrackHeight h)
 {
+	int gmlen = (height_to_pixels (h)) - 5;
 	bool height_changed = (height == 0) || (h != height_style);
 
 	TimeAxisView::set_height (h);
@@ -772,6 +780,7 @@ RouteTimeAxisView::set_height (TrackHeight h)
 	case Large:
 	case Larger:
 	case Normal:
+		reset_meter();
 		show_name_entry ();
 		hide_name_label ();
 
@@ -792,6 +801,7 @@ RouteTimeAxisView::set_height (TrackHeight h)
 		break;
 
 	case Smaller:
+		reset_meter();
 		show_name_entry ();
 		hide_name_label ();
 
@@ -812,6 +822,7 @@ RouteTimeAxisView::set_height (TrackHeight h)
 		break;
 
 	case Small:
+		hide_meter();
 		hide_name_entry ();
 		show_name_label ();
 
@@ -2028,3 +2039,50 @@ RouteTimeAxisView::automation_child(ARDOUR::Parameter param)
 		return boost::shared_ptr<AutomationTimeAxisView>();
 }
 
+void
+RouteTimeAxisView::fast_update ()
+{
+	lm.update_meters ();
+}
+
+void
+RouteTimeAxisView::hide_meter ()
+{
+	clear_meter ();
+	lm.hide_meters ();
+}
+
+void
+RouteTimeAxisView::show_meter ()
+{
+	reset_meter ();
+}
+
+void
+RouteTimeAxisView::reset_meter ()
+{
+	if (Config->get_show_track_meters()) {
+		lm.setup_meters (height-5);
+	} else {
+		hide_meter ();
+	}
+}
+
+void
+RouteTimeAxisView::clear_meter ()
+{
+	lm.clear_meters ();
+}
+
+void
+RouteTimeAxisView::meter_changed (void *src)
+{
+	ENSURE_GUI_THREAD (bind (mem_fun(*this, &RouteTimeAxisView::meter_changed), src));
+	reset_meter();
+}
+
+void
+RouteTimeAxisView::io_changed (IOChange change, void *src)
+{
+	reset_meter ();
+}
diff --git a/gtk2_ardour/route_time_axis.h b/gtk2_ardour/route_time_axis.h
index 1331831f39..de89d54d94 100644
--- a/gtk2_ardour/route_time_axis.h
+++ b/gtk2_ardour/route_time_axis.h
@@ -38,6 +38,7 @@
 #include "enums.h"
 #include "time_axis_view.h"
 #include "canvas.h"
+#include "level_meter.h"
 
 namespace ARDOUR {
 	class Session;
@@ -118,6 +119,14 @@ public:
 	ARDOUR::RouteGroup* edit_group() const;
 	boost::shared_ptr<ARDOUR::Playlist> playlist() const;
 
+	void fast_update ();
+	void hide_meter ();
+	void show_meter ();
+	void reset_meter ();
+	void clear_meter ();
+	void io_changed (ARDOUR::IOChange, void *);
+	void meter_changed (void *);
+
 protected:
 	friend class StreamView;
 
@@ -283,6 +292,8 @@ protected:
 	void set_state (const XMLNode&);
 	
 	XMLNode* get_automation_child_xml_node (ARDOUR::Parameter param);
+
+	LevelMeter	lm;
 };
 
 #endif /* __ardour_route_time_axis_h__ */
diff --git a/gtk2_ardour/time_axis_view.cc b/gtk2_ardour/time_axis_view.cc
index cf0e39cdbd..4815aff0a0 100644
--- a/gtk2_ardour/time_axis_view.cc
+++ b/gtk2_ardour/time_axis_view.cc
@@ -74,7 +74,7 @@ TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisVie
 	  height_style(Small),
 	  y_position(0),
 	  order(0),
-	  controls_table (2, 8)
+	  controls_table (2, 7)
 {
 	if (need_size_info) {
 		compute_controls_size_info ();
@@ -128,7 +128,7 @@ TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisVie
 	controls_table.set_col_spacings (0);
 	controls_table.set_homogeneous (true);
 
-	controls_table.attach (name_hbox, 0, 4, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
+	controls_table.attach (name_hbox, 0, 4, 0, 1, Gtk::SHRINK|Gtk::EXPAND, Gtk::SHRINK|Gtk::EXPAND);
 	controls_table.show_all ();
 	controls_table.set_no_show_all ();