From 5fc53e262e01e905ddb093d7228f00d73b8b4ab3 Mon Sep 17 00:00:00 2001
From: Paweł Kołodziejski
Date: Sat, 10 Jan 2009 13:04:33 +0000
Subject: - added initial radio chatter sfx, still not fully correct - remove
 obsolete mixerStreamRunning track variable

svn-id: r35801
---
 engines/scumm/imuse_digi/dimuse.cpp | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'engines/scumm/imuse_digi/dimuse.cpp')

diff --git a/engines/scumm/imuse_digi/dimuse.cpp b/engines/scumm/imuse_digi/dimuse.cpp
index 2d9ce251a4..54c8c041c4 100644
--- a/engines/scumm/imuse_digi/dimuse.cpp
+++ b/engines/scumm/imuse_digi/dimuse.cpp
@@ -98,6 +98,7 @@ void IMuseDigital::resetState() {
 	memset(_attributes, 0, sizeof(_attributes));
 	_nextSeqToPlay = 0;
 	_stopingSequence = 0;
+	_radioChatterSFX = 0;
 	_triggerUsed = false;
 }
 
@@ -112,6 +113,7 @@ void IMuseDigital::saveOrLoad(Serializer *ser) {
 		MKLINE(IMuseDigital, _curMusicSeq, sleInt32, VER(31)),
 		MKLINE(IMuseDigital, _curMusicCue, sleInt32, VER(31)),
 		MKLINE(IMuseDigital, _nextSeqToPlay, sleInt32, VER(31)),
+		MKLINE(IMuseDigital, _radioChatterSFX, sleByte, VER(76)),
 		MKARRAY(IMuseDigital, _attributes[0], sleInt32, 188, VER(31)),
 		MKEND()
 	};
@@ -128,7 +130,7 @@ void IMuseDigital::saveOrLoad(Serializer *ser) {
 		MKLINE(Track, used, sleByte, VER(31)),
 		MKLINE(Track, toBeRemoved, sleByte, VER(31)),
 		MKLINE(Track, souStreamUsed, sleByte, VER(31)),
-		MKLINE(Track, mixerStreamRunning, sleByte, VER(31)),	// FIXME: OBSOLETE, remove this!
+		MK_OBSOLETE(Track, mixerStreamRunning, sleByte, VER(31), VER(76)),
 		MKLINE(Track, soundPriority, sleInt32, VER(31)),
 		MKLINE(Track, regionOffset, sleInt32, VER(31)),
 		MK_OBSOLETE(Track, trackOffset, sleInt32, VER(31), VER(31)),
@@ -309,6 +311,25 @@ void IMuseDigital::callback() {
 						}
 					} else if (bits == 8) {
 						curFeedSize = _sound->getDataFromRegion(track->soundDesc, track->curRegion, &tmpSndBufferPtr, track->regionOffset, feedSize);
+						if (_radioChatterSFX && track->volGroupId == IMUSE_VOLGRP_VOICE) {
+							byte *buf = new byte[curFeedSize];
+							int index = 0;
+							int count = curFeedSize;
+							byte *ptr_1 = tmpSndBufferPtr;
+							byte *ptr_2 = tmpSndBufferPtr + 4;
+							int value = ptr_1[0] - 0x80;
+							value += ptr_1[1] - 0x80;
+							value += ptr_1[2] - 0x80;
+							value += ptr_1[3] - 0x80;
+							do {
+								int t = *ptr_1++;
+								int v = t - (value / 4);
+								value = (int)(*(ptr_2++) - 0x80) + (value - t + 128);
+								buf[index++] = (byte)v * 4;
+							} while (--count);
+							delete[] tmpSndBufferPtr;
+							tmpSndBufferPtr = buf;
+						}
 						if (channels == 2) {
 							curFeedSize &= ~1;
 						}
-- 
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