From 3a60637d77f620b94ae65fe137f99e6881075df2 Mon Sep 17 00:00:00 2001
From: Giovanni Bajo
Date: Sun, 31 Dec 2017 13:55:33 +0100
Subject: SCUMM: really implement lipsync

It looks like the code was there, but it was never fully implemented
because _curSoundPos was never being incremented. Experimentally,
it looks like it works if it is a 60FPS counter.
---
 engines/scumm/sound.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'engines/scumm/sound.cpp')

diff --git a/engines/scumm/sound.cpp b/engines/scumm/sound.cpp
index 98958a3050..318a0b8180 100644
--- a/engines/scumm/sound.cpp
+++ b/engines/scumm/sound.cpp
@@ -448,14 +448,15 @@ void Sound::processSfxQueues() {
 			finished = !isSoundRunning(1);
 		} else {
 			finished = !_mixer->isSoundHandleActive(*_talkChannelHandle);
+			// calculate speech sound position simulating increment at 60FPS
+			_curSoundPos = (_mixer->getSoundElapsedTime(*_talkChannelHandle) * 60) / 1000;
 		}
 
 		if ((uint) act < 0x80 && ((_vm->_game.version == 8) || (_vm->_game.version <= 7 && !_vm->_string[0].no_talk_anim))) {
 			a = _vm->derefActor(act, "processSfxQueues");
 			if (a->isInCurrentRoom()) {
-				if (isMouthSyncOff(_curSoundPos) && !_mouthSyncMode) {
-					if (!_endOfMouthSync)
-						a->runActorTalkScript(a->_talkStopFrame);
+				if (isMouthSyncOff(_curSoundPos) && _mouthSyncMode) {
+					a->runActorTalkScript(a->_talkStopFrame);
 					_mouthSyncMode = 0;
 				} else  if (isMouthSyncOff(_curSoundPos) == 0 && !_mouthSyncMode) {
 					a->runActorTalkScript(a->_talkStartFrame);
-- 
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