From af3481fb78ec721466eb26b5191e019e1509b206 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 15 Jan 2014 16:08:27 -0500
Subject: add lots more BBT-based time info for VST plugins (see 5737)

---
 libs/ardour/session_vst.cc | 51 +++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 48 insertions(+), 3 deletions(-)

(limited to 'libs/ardour')

diff --git a/libs/ardour/session_vst.cc b/libs/ardour/session_vst.cc
index 644fb19ffb..b2e9b14c1a 100644
--- a/libs/ardour/session_vst.cc
+++ b/libs/ardour/session_vst.cc
@@ -17,7 +17,9 @@
 
 */
 
+#ifndef COMPILER_MSVC
 #include <stdbool.h>
+#endif
 #include <cstdio>
 
 #include "ardour/session.h"
@@ -59,11 +61,19 @@ intptr_t Session::vst_callback (
 	if (effect && effect->user) {
 	        plug = (VSTPlugin *) (effect->user);
 		session = &plug->session();
+#ifdef COMPILER_MSVC
+		SHOW_CALLBACK ("am callback 0x%x, opcode = %d, plugin = \"%s\" ", (int) pthread_self().p, opcode, plug->name());
+#else
 		SHOW_CALLBACK ("am callback 0x%x, opcode = %d, plugin = \"%s\" ", (int) pthread_self(), opcode, plug->name());
+#endif
 	} else {
 		plug = 0;
 		session = 0;
+#ifdef COMPILER_MSVC
+		SHOW_CALLBACK ("am callback 0x%x, opcode = %d", (int) pthread_self().p, opcode);
+#else
 		SHOW_CALLBACK ("am callback 0x%x, opcode = %d", (int) pthread_self(), opcode);
+#endif
 	}
 
 	switch(opcode){
@@ -121,21 +131,56 @@ intptr_t Session::vst_callback (
 		// conversions
 		memset(&_timeInfo, 0, sizeof(_timeInfo));
 		if (session) {
-			_timeInfo.samplePos = session->transport_frame();
+			framepos_t now = session->transport_frame();
+			_timeInfo.samplePos = now;
 			_timeInfo.sampleRate = session->frame_rate();
 			_timeInfo.flags = 0;
 
+			const TempoMetric& tm (session->tempo_map().metric_at (now));
+
 			if (value & (kVstTempoValid)) {
-				const Tempo& t (session->tempo_map().tempo_at (session->transport_frame()));
+				const Tempo& t (tm.tempo());
 				_timeInfo.tempo = t.beats_per_minute ();
 				_timeInfo.flags |= (kVstTempoValid);
 			}
 			if (value & (kVstBarsValid)) {
-				const Meter& m (session->tempo_map().meter_at (session->transport_frame()));
+				const Meter& m (tm.meter());
 				_timeInfo.timeSigNumerator = m.divisions_per_bar ();
 				_timeInfo.timeSigDenominator = m.note_divisor ();
 				_timeInfo.flags |= (kVstBarsValid);
 			}
+			if (value & (kVstPpqPosValid)) {
+				Timecode::BBT_Time bbt;
+				try {
+					session->tempo_map().bbt_time_rt (now, bbt);
+					
+					/* Note that this assumes constant
+					   meter/tempo throughout the session. We
+					   can do better than this, because
+					   progressive rock fans demand it.
+					*/
+					double ppqBar = double(bbt.bars - 1) * tm.meter().divisions_per_bar();
+					double ppqBeat = double(bbt.beats - 1);
+					double ppqTick = double(bbt.ticks) / Timecode::BBT_Time::ticks_per_beat;
+					// PPQ Pos
+					_timeInfo.ppqPos = ppqBar + ppqBeat + ppqTick;
+					_timeInfo.flags |= (kVstPpqPosValid);
+				} catch (...) {
+					/* relax */
+				}
+			}
+
+			_timeInfo.tempo = tm.tempo().beats_per_minute();
+			_timeInfo.flags |= kVstTempoValid;
+			
+			// Bars
+			// _timeInfo.barStartPos = ppqBar;
+			// _timeInfo.flags |= kVstBarsValid;
+			
+			// Time Signature
+			_timeInfo.timeSigNumerator = tm.meter().divisions_per_bar();
+			_timeInfo.timeSigDenominator = tm.meter().note_divisor();
+			_timeInfo.flags |= kVstTimeSigValid;
 
 			if (session->transport_speed() != 0.0f) {
 				_timeInfo.flags |= kVstTransportPlaying;
-- 
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