MACVENTURE: Add text huffman loading

3 files changed, 83 insertions, 4 deletions

diff --git a/engines/macventure/image.h b/engines/macventure/image.h
new file mode 100644
index 0000000000..5bf6ccf7ac
--- /dev/null
+++ b/engines/macventure/image.h
@@ -0,0 +1,40 @@
+/* ScummVM - Graphic Adventure Engine
+*
+* ScummVM is the legal property of its developers, whose names
+* are too numerous to list here. Please refer to the COPYRIGHT
+* file distributed with this source distribution.
+*
+* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+*/
+
+#ifndef MACVENTURE_IMAGE_H
+#define MACVENTURE_IMAGE_H
+
+#include "macventure/macventure.h"
+
+namespace MacVenture {
+
+class Image {
+public:
+	Image();
+	~Image();
+
+	void blit(Graphics::ManagedSurface *target);
+};
+
+} // End of namespace MacVenture
+
+#endif
diff --git a/engines/macventure/macventure.cpp b/engines/macventure/macventure.cpp
index 821a786924..0e3e5a5e5b 100644
--- a/engines/macventure/macventure.cpp
+++ b/engines/macventure/macventure.cpp
@@ -54,9 +54,11 @@ MacVentureEngine::~MacVentureEngine() {
 	delete _debugger;
 	delete _gui;
 
-	if (_filenames) {
+	if (_filenames) 
 		delete _filenames;
-	}
+	
+	if (_textHuffman)
+		delete _textHuffman;
 }
 
 Common::Error MacVentureEngine::run() {
@@ -73,12 +75,14 @@ Common::Error MacVentureEngine::run() {
 	if (!_resourceManager->open(getGameFileName()))
 		error("Could not open %s as a resource fork", getGameFileName());
 
+	// Engine-wide loading
 	if (!loadGlobalSettings())
 		error("Could not load the engine settings");
 
-	// Engine-wide loading
+	_oldTextEncoding = !loadTextHuffman();
+	
 	_filenames = new StringTable(this, _resourceManager, kFilenamesStringTableID);
-
+	
 	// Big class instantiation
 	_gui = new Gui(this, _resourceManager);
 	_world = new World(this, _resourceManager);
@@ -192,5 +196,36 @@ bool MacVentureEngine::loadGlobalSettings() {
 	return false;
 }
 
+bool MacVentureEngine::loadTextHuffman() {
+	Common::MacResIDArray resArray;
+	Common::SeekableReadStream *res;
+
+	if ((resArray = _resourceManager->getResIDArray(MKTAG('G', 'N', 'R', 'L'))).size() == 0)
+		return false;
+
+	res = _resourceManager->getResource(MKTAG('G', 'N', 'R', 'L'), kTextHuffmanTableID);
+	if (res) {
+		uint32 numEntries = res->readUint16BE();
+		res->readUint16BE(); // Skip
+
+		uint32 *masks = new uint32[numEntries];
+		for (uint i = 0; i < numEntries - 1; i++)
+			// For some reason there are one lass mask than entries
+			masks[i] = res->readUint16BE();
+
+		uint8 *lengths = new uint8[numEntries];
+		for (uint i = 0; i < numEntries; i++)
+			lengths[i] = res->readByte();
+
+		uint32 *values = new uint32[numEntries];
+		for (uint i = 0; i < numEntries; i++)
+			values[i] = res->readByte();
+
+		_textHuffman = new Common::Huffman(0, numEntries, masks, lengths, values);
+
+		return true;
+	} 
+	return false;	
+}
 
 } // End of namespace MacVenture
diff --git a/engines/macventure/macventure.h b/engines/macventure/macventure.h
index d4f1a33fb9..8e11612870 100644
--- a/engines/macventure/macventure.h
+++ b/engines/macventure/macventure.h
@@ -27,6 +27,7 @@
 #include "common/debug.h"
 #include "common/random.h"
 #include "common/macresman.h"
+#include "common/huffman.h"
 
 #include "gui/debugger.h"
 
@@ -121,6 +122,7 @@ private:
 
 	// Data loading
 	bool loadGlobalSettings();
+	bool loadTextHuffman();
 
 private: // Attributes
 
@@ -136,6 +138,8 @@ private: // Attributes
 	// Engine state
 	GlobalSettings _globalSettings;
 	StringTable *_filenames;
+	Common::Huffman *_textHuffman;
+	bool _oldTextEncoding;
 	bool _shouldQuit;
 	bool _paused;