From 684cbfa2fdee6d2927409670a22ecc571ef31a02 Mon Sep 17 00:00:00 2001
From: Filippos Karapetis
Date: Mon, 10 Oct 2016 04:42:06 +0300
Subject: CHEWY: Add support for palette fadeout to videos

---
 engines/chewy/graphics.cpp          |  3 +++
 engines/chewy/video/cfo_decoder.cpp | 26 +++++++++++++++++++++-----
 engines/chewy/video/cfo_decoder.h   |  1 +
 3 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/engines/chewy/graphics.cpp b/engines/chewy/graphics.cpp
index 5db2a76398..0861a344ab 100644
--- a/engines/chewy/graphics.cpp
+++ b/engines/chewy/graphics.cpp
@@ -128,7 +128,9 @@ void Graphics::playVideo(uint num) {
 	uint16 x = (g_system->getWidth() - cfoDecoder->getWidth()) / 2;
 	uint16 y = (g_system->getHeight() - cfoDecoder->getHeight()) / 2;
 	bool skipVideo = false;
+	byte curPalette[256 * 3];
 
+	g_system->getPaletteManager()->grabPalette(curPalette, 0, 256);
 	hideCursor();
 
 	cfoDecoder->start();
@@ -157,6 +159,7 @@ void Graphics::playVideo(uint num) {
 
 	cfoDecoder->close();
 
+	g_system->getPaletteManager()->setPalette(curPalette, 0, 256);
 	showCursor();
 }
 
diff --git a/engines/chewy/video/cfo_decoder.cpp b/engines/chewy/video/cfo_decoder.cpp
index 30f48d27cd..0d8fcd7083 100644
--- a/engines/chewy/video/cfo_decoder.cpp
+++ b/engines/chewy/video/cfo_decoder.cpp
@@ -23,6 +23,7 @@
 #include "common/events.h"
 #include "common/system.h"
 #include "engines/engine.h"
+#include "graphics/palette.h"
 #include "video/flic_decoder.h"
 
 #include "chewy/sound.h"
@@ -175,7 +176,7 @@ void CfoDecoder::CfoVideoTrack::handleFrame() {
 void CfoDecoder::CfoVideoTrack::handleCustomFrame() {
 	uint16 chunkCount = _fileStream->readUint16LE();
 
-	uint16 delay, number, channel, volume, repeat, balance;
+	uint16 number, channel, volume, repeat, balance;
 
 	// Read subchunks
 	for (uint32 i = 0; i < chunkCount; ++i) {
@@ -188,10 +189,8 @@ void CfoDecoder::CfoVideoTrack::handleCustomFrame() {
 			break;
 		case kChunkFadeOut:
 			// Used in video 0
-			delay = _fileStream->readUint16LE();
-
-			warning("kChunkFadeOut, delay %d", delay);
-			// TODO
+			_fileStream->skip(2);	// delay, unused
+			fadeOut();
 			break;
 		case kChunkLoadMusic:
 			// Used in videos 0, 18, 34, 71
@@ -300,4 +299,21 @@ void CfoDecoder::CfoVideoTrack::handleCustomFrame() {
 	}
 }
 
+void CfoDecoder::CfoVideoTrack::fadeOut() {
+	for (int j = 0; j < 64; j++) {
+		for (int i = 0; i < 256; i++) {
+			if (_palette[i * 3 + 0] > 0)
+				--_palette[i * 3 + 0];
+			if (_palette[i * 3 + 1] > 0)
+				--_palette[i * 3 + 1];
+			if (_palette[i * 3 + 2] > 0)
+				--_palette[i * 3 + 2];
+		}
+
+		g_system->getPaletteManager()->setPalette(_palette, 0, 256);
+		g_system->updateScreen();
+		g_system->delayMillis(10);
+	}
+}
+
 } // End of namespace Chewy
diff --git a/engines/chewy/video/cfo_decoder.h b/engines/chewy/video/cfo_decoder.h
index 26b97ec4ff..1495821674 100644
--- a/engines/chewy/video/cfo_decoder.h
+++ b/engines/chewy/video/cfo_decoder.h
@@ -58,6 +58,7 @@ private:
 	private:
 		void handleFrame();
 		void handleCustomFrame();
+		void fadeOut();
 
 		Sound *_sound;
 
-- 
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