17 files changed, 3604 insertions, 0 deletions
diff --git a/backends/platform/ios7/README.md b/backends/platform/ios7/README.md
new file mode 100644
index 0000000000..1f34c15cc6
--- /dev/null
+++ b/backends/platform/ios7/README.md
@@ -0,0 +1,150 @@
+# ScummVM for iOS 7.1+ #
+
+This is a quick fix of the latest ScummVM (1.8.0) for iOS 7.1. It has been tested on real iPhone 6S+, and iPad Pro, and also on all the available Xcode simulators.
+
+I tried to use all the latest iOS features to replace the old code. For instance, it uses gesture recognizers most of the time, it supports the new iPhones 6 / 6+ / 6s / 6s+ resolution, and you can copy your game files using iTunes.
+
+## Compilation ##
+
+First, clone the repository:
+```
+$ git clone -b ios-fix --recursive https://github.com/bSr43/scummvm.git
+```
+
+### Compilation from Xcode ###
+
+This is the recommended way to compile ScummVM, and the only one which makes it possible to run ScummVM on a non-jailbroken device!
+
+The next step is to compile the **create_project** tool. Open the Xcode project you'll found in the **devtools/create\_project/xcode/** directory. Once compiled, copy the binary somewhere in your *PATH*, and create a **build** directory somewhere on your harddisk. It is recommended to create this directory next to the cloned repository (they share the same parent).
+
+Execute the following commands in a terminal:
+```
+$ cd path_to_the_build_directory
+$ create_project path_to_scummvm_repository --xcode --enable-fluidsynth --disable-jpeg --disable-bink --disable-16bit --disable-mt32emu --disable-nasm --disable-opengl --disable-theora --disable-taskbar
+```
+
+This will create an Xcode project for ScummVM, for both the OS X, and the iOS target.
+
+Now, download the external libraries from http://bsr43.free.fr/scummvm/ScummVM-iOS-libraries.zip. Unzip the archive in your **build** directory. Please make sure that the **lib**, and **include** directories are at the root of the **build** directory, not in a subdirectory.
+
+Now, your **build** directory should contain:
+* a generated **engines** directory,
+* a generated **scummvm.xcodeproj** project,
+* an **include** directory,
+* a **lib** directory.
+
+You are ready to compile ScummVM: open the **scummvm.xcodeproj** project, and build it.
+
+### Compilation from command line ###
+
+For jailbroken devices, it is also possible to compile the project from command line. You'll need a working toolchain, and some tools, like **ldid**, to fake the code signature.
+
+Here is a script to download, and compile all the required tools. This script has been wrote for Debian 8.2, and should be run as root.
+
+```
+#!/bin/bash
+
+if [ $UID -ne 0 ]; then
+	echo "This script should be run by the root user"
+	exit 1
+fi
+
+# Install the Clang compiler
+apt-get install -y clang-3.4 libclang-3.4-dev llvm-3.4 libtool bison flex automake subversion git pkg-config wget libssl-dev uuid-dev libxml2-dev || exit 1
+
+# Add LLVM to the linker library path
+echo /usr/lib/llvm-3.4/lib > /etc/ld.so.conf.d/libllvm-3.4.conf
+ldconfig
+
+# Add symlinks for the LLVM headers
+ln -s /usr/lib/llvm-3.4/bin/llvm-config /usr/bin/llvm-config || exit 1
+ln -s /usr/include/llvm-3.4/llvm /usr/include/llvm || exit 1
+ln -s /usr/include/llvm-c-3.4/llvm-c /usr/include/llvm-c || exit 1
+ln -s /usr/bin/clang-3.4 /usr/bin/clang || exit 1
+ln -s /usr/bin/clang++-3.4 /usr/bin/clang++ || exit 1
+
+# Build the linker
+svn checkout http://ios-toolchain-based-on-clang-for-linux.googlecode.com/svn/trunk/cctools-porting || exit 1
+cd cctools-porting
+sed -i'' 's/proz -k=20  --no-curses/wget/g' cctools-ld64.sh
+./cctools-ld64.sh || exit 1
+
+cd cctools-855-ld64-236.3
+./autogen.sh || exit 1
+./configure --prefix=/usr/local --target=arm-apple-darwin11 || exit 1
+make || exit 1
+make install || exit 1
+cd ../..
+
+# Install ios-tools
+wget https://ios-toolchain-based-on-clang-for-linux.googlecode.com/files/iphonesdk-utils-2.0.tar.gz || exit 1
+tar xzf iphonesdk-utils-2.0.tar.gz
+cd iphonesdk-utils-2.0
+patch -p0 <<_EOF
+*** genLocalization2/getLocalizedStringFromFile.cpp    2015-04-02 04:45:39.309837816 +0530
+--- genLocalization2/getLocalizedStringFromFile.cpp    2015-04-02 04:45:11.525700021 +0530
+***************
+*** 113,115 ****
+      clang::HeaderSearch headerSearch(headerSearchOptions,
+-                                      fileManager,
+                                       *pDiagnosticsEngine,
+--- 113,115 ----
+      clang::HeaderSearch headerSearch(headerSearchOptions,
++                                      sourceManager,
+                                       *pDiagnosticsEngine,
+***************
+*** 129,134 ****
+                  false);
+-     clang::HeaderSearch headerSearch(fileManager,
+                                       *pDiagnosticsEngine,
+                                       languageOptions,
+-                                      pTargetInfo);
+      ApplyHeaderSearchOptions(headerSearch, headerSearchOptions, languageOptions, pTargetInfo->getTriple());
+--- 129,134 ----
+                  false);
++     clang::HeaderSearch headerSearch(fileManager);/*,
+                                       *pDiagnosticsEngine,
+                                       languageOptions,
++                                      pTargetInfo);*/
+      ApplyHeaderSearchOptions(headerSearch, headerSearchOptions, languageOptio
+_EOF
+
+./autogen.sh || exit 1
+CC=clang CXX=clang++ ./configure --prefix=/usr/local || exit 1
+make || exit 1
+make install || exit 1
+
+# Install the iOS SDK 8.1
+mkdir -p /usr/share/ios-sdk
+cd /usr/share/ios-sdk
+wget http://iphone.howett.net/sdks/dl/iPhoneOS8.1.sdk.tbz2 || exit 1
+tar xjf iPhoneOS8.1.sdk.tbz2
+rm iPhoneOS8.1.sdk.tbz2
+```
+
+Now, in order to compile ScummVM, execute the following commands:
+```
+$ export SDKROOT=/usr/share/ios-sdk/iPhoneOS8.1.sdk
+$ export CC=ios-clang
+$ export CXX=ios-clang++
+$ ./configure --host=ios7 --disable-mt32emu --enable-release
+$ make ios7bundle
+```
+
+At the end of the compilation, you'll find a **ScummVM.app** application: copy it over SSH, and reboot your device.
+
+## Usage ##
+
+The game data files can be copied on the iOS device using iTunes. Once done, add your games in ScummVM as usual.
+
+Here is a list of the in-game gestures:
+
+|Gesture|Description|
+|-------|-----------|
+|Two fingers swipe down|Display the ScummVM menu for loading, saving, etc.|
+|Two fingers swipe right|Enable / disable the touchpad mode|
+|Two fingers swipe up|Enable / disable the mouse-click-and-drag mode|
+|Two fingers tap|Simulate a right click. You should tap with one finger, and then tap with another while keeping your first finger on the screen.|
+|Two fingers double-tap|Skip the cinematic / video|
+
+The iOS keyboard is visible when the device is in portrait mode, and hidden in landscape mode.
diff --git a/backends/platform/ios7/iOS7AppDelegate.h b/backends/platform/ios7/iOS7AppDelegate.h
new file mode 100644
index 0000000000..7f903a692d
--- /dev/null
+++ b/backends/platform/ios7/iOS7AppDelegate.h
@@ -0,0 +1,15 @@
+//
+// Created by Vincent Bénony on 07/12/2015.
+//
+
+#import <UIKit/UIKit.h>
+
+@class iPhoneView;
+
+
+@interface iOS7AppDelegate : NSObject<UIApplicationDelegate>
+
++ (iOS7AppDelegate *)iOS7AppDelegate;
++ (iPhoneView *)iPhoneView;
+
+@end
diff --git a/backends/platform/ios7/iOS7AppDelegate.mm b/backends/platform/ios7/iOS7AppDelegate.mm
new file mode 100644
index 0000000000..d664f91ccc
--- /dev/null
+++ b/backends/platform/ios7/iOS7AppDelegate.mm
@@ -0,0 +1,95 @@
+//
+// Created by Vincent Bénony on 07/12/2015.
+//
+
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+#import "iOS7AppDelegate.h"
+#import "iOS7ScummVMViewController.h"
+#import "ios7_video.h"
+
+@implementation iOS7AppDelegate {
+	UIWindow *_window;
+	iOS7ScummVMViewController *_controller;
+	iPhoneView *_view;
+}
+
+- (id)init {
+	if (self = [super init]) {
+		_window = nil;
+		_view = nil;
+	}
+	return self;
+}
+
+- (void)mainLoop:(id)param {
+	@autoreleasepool {
+		iOS7_main(iOS7_argc, iOS7_argv);
+	}
+
+	exit(0);
+}
+
+- (void)applicationDidFinishLaunching:(UIApplication *)application {
+	CGRect rect = [[UIScreen mainScreen] bounds];
+
+	// Create the directory for savegames
+#ifdef IPHONE_OFFICIAL
+	NSFileManager *fm = [NSFileManager defaultManager];
+	NSString *documentPath = [NSString stringWithUTF8String:iOS7_getDocumentsDir()];
+	NSString *savePath = [documentPath stringByAppendingPathComponent:@"Savegames"];
+	if (![fm fileExistsAtPath:savePath]) {
+		[fm createDirectoryAtPath:savePath withIntermediateDirectories:YES attributes:nil error:nil];
+	}
+#endif
+
+	_window = [[UIWindow alloc] initWithFrame:rect];
+	[_window retain];
+
+	_controller = [[iOS7ScummVMViewController alloc] init];
+
+	_view = [[iPhoneView alloc] initWithFrame:rect];
+	_view.multipleTouchEnabled = YES;
+	_controller.view = _view;
+
+	[_window setRootViewController:_controller];
+	[_window makeKeyAndVisible];
+
+	[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
+	[[NSNotificationCenter defaultCenter] addObserver:self
+	                                         selector:@selector(didRotate:)
+	                                             name:@"UIDeviceOrientationDidChangeNotification"
+	                                           object:nil];
+
+	[NSThread detachNewThreadSelector:@selector(mainLoop:) toTarget:self withObject:nil];
+}
+
+- (void)applicationWillResignActive:(UIApplication *)application {
+	[_view applicationSuspend];
+}
+
+- (void)applicationDidBecomeActive:(UIApplication *)application {
+	[_view applicationResume];
+}
+
+- (void)didRotate:(NSNotification *)notification {
+	UIDeviceOrientation screenOrientation = [[UIDevice currentDevice] orientation];
+	[_view deviceOrientationChanged:screenOrientation];
+}
+
++ (iOS7AppDelegate *)iOS7AppDelegate {
+	UIApplication *app = [UIApplication sharedApplication];
+	return (iOS7AppDelegate *) app.delegate;
+}
+
++ (iPhoneView *)iPhoneView {
+	iOS7AppDelegate *appDelegate = [self iOS7AppDelegate];
+	return appDelegate->_view;
+}
+
+@end
+
+const char *iOS7_getDocumentsDir() {
+	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
+	NSString *documentsDirectory = [paths objectAtIndex:0];
+	return [documentsDirectory UTF8String];
+}
diff --git a/backends/platform/ios7/iOS7ScummVMViewController.h b/backends/platform/ios7/iOS7ScummVMViewController.h
new file mode 100644
index 0000000000..0322bc6f7f
--- /dev/null
+++ b/backends/platform/ios7/iOS7ScummVMViewController.h
@@ -0,0 +1,28 @@
+/* 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.
+ *
+ */
+
+#import <UIKit/UIKit.h>
+
+
+@interface iOS7ScummVMViewController : UIViewController
+
+@end
diff --git a/backends/platform/ios7/iOS7ScummVMViewController.mm b/backends/platform/ios7/iOS7ScummVMViewController.mm
new file mode 100644
index 0000000000..f92fd0115c
--- /dev/null
+++ b/backends/platform/ios7/iOS7ScummVMViewController.mm
@@ -0,0 +1,32 @@
+/* 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.
+ *
+ */
+
+#import "iOS7ScummVMViewController.h"
+
+
+@implementation iOS7ScummVMViewController
+
+- (BOOL)prefersStatusBarHidden {
+    return YES;
+}
+
+@end
diff --git a/backends/platform/ios7/ios7_common.h b/backends/platform/ios7/ios7_common.h
new file mode 100644
index 0000000000..b7a47eda8a
--- /dev/null
+++ b/backends/platform/ios7/ios7_common.h
@@ -0,0 +1,128 @@
+/* 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 BACKENDS_PLATFORM_IPHONE_IPHONE_COMMON_H
+#define BACKENDS_PLATFORM_IPHONE_IPHONE_COMMON_H
+
+#include "graphics/surface.h"
+
+enum InputEvent {
+	kInputMouseDown,
+	kInputMouseUp,
+	kInputMouseDragged,
+	kInputMouseSecondDragged,
+	kInputMouseSecondDown,
+	kInputMouseSecondUp,
+	kInputOrientationChanged,
+	kInputKeyPressed,
+	kInputApplicationSuspended,
+	kInputApplicationResumed,
+	kInputSwipe,
+	kInputTap
+};
+
+enum ScreenOrientation {
+	kScreenOrientationPortrait,
+	kScreenOrientationLandscape,
+	kScreenOrientationFlippedLandscape
+};
+
+enum UIViewSwipeDirection {
+	kUIViewSwipeUp = 1,
+	kUIViewSwipeDown = 2,
+	kUIViewSwipeLeft = 4,
+	kUIViewSwipeRight = 8
+};
+
+enum UIViewTapDescription {
+	kUIViewTapSingle = 1,
+	kUIViewTapDouble = 2
+};
+
+enum GraphicsModes {
+	kGraphicsModeLinear = 0,
+	kGraphicsModeNone = 1,
+
+	kGraphicsMode2xSaI,
+	kGraphicsModeSuper2xSaI,
+	kGraphicsModeSuperEagle,
+	kGraphicsModeAdvMame2x,
+	kGraphicsModeAdvMame3x,
+	kGraphicsModeHQ2x,
+	kGraphicsModeHQ3x,
+	kGraphicsModeTV2x,
+	kGraphicsModeDotMatrix
+};
+
+struct VideoContext {
+	VideoContext() : asprectRatioCorrection(), screenWidth(), screenHeight(), overlayVisible(false),
+	                 overlayWidth(), overlayHeight(), mouseX(), mouseY(),
+	                 mouseHotspotX(), mouseHotspotY(), mouseWidth(), mouseHeight(),
+	                 mouseIsVisible(), graphicsMode(kGraphicsModeNone), shakeOffsetY() {
+	}
+
+	// Game screen state
+	bool asprectRatioCorrection;
+	uint screenWidth, screenHeight;
+	Graphics::Surface screenTexture;
+
+	// Overlay state
+	bool overlayVisible;
+	uint overlayWidth, overlayHeight;
+	Graphics::Surface overlayTexture;
+
+	// Mouse cursor state
+	uint mouseX, mouseY;
+	int mouseHotspotX, mouseHotspotY;
+	uint mouseWidth, mouseHeight;
+	bool mouseIsVisible;
+	Graphics::Surface mouseTexture;
+
+	// Misc state
+	GraphicsModes graphicsMode;
+	int shakeOffsetY;
+};
+
+struct InternalEvent {
+	InternalEvent() : type(), value1(), value2() {}
+	InternalEvent(InputEvent t, int v1, int v2) : type(t), value1(v1), value2(v2) {}
+
+	InputEvent type;
+	int value1, value2;
+};
+
+// On the ObjC side
+
+extern int iOS7_argc;
+extern char **iOS7_argv;
+
+void iOS7_updateScreen();
+bool iOS7_fetchEvent(InternalEvent *event);
+bool iOS7_isBigDevice();
+
+void iOS7_main(int argc, char **argv);
+const char *iOS7_getDocumentsDir();
+bool iOS7_touchpadModeEnabled();
+
+uint getSizeNextPOT(uint size);
+
+#endif
diff --git a/backends/platform/ios7/ios7_keyboard.h b/backends/platform/ios7/ios7_keyboard.h
new file mode 100644
index 0000000000..ddd8f436e5
--- /dev/null
+++ b/backends/platform/ios7/ios7_keyboard.h
@@ -0,0 +1,44 @@
+/* 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 BACKENDS_PLATFORM_IPHONE_IPHONE_KEYBOARD_H
+#define BACKENDS_PLATFORM_IPHONE_IPHONE_KEYBOARD_H
+
+#include <UIKit/UIKit.h>
+#include <UIKit/UITextView.h>
+
+@interface SoftKeyboard : UIView<UITextViewDelegate> {
+	id inputDelegate;
+	UITextView *inputView;
+}
+
+- (id)initWithFrame:(CGRect)frame;
+- (UITextView *)inputView;
+- (void)setInputDelegate:(id)delegate;
+- (void)handleKeyPress:(unichar)c;
+
+- (void)showKeyboard;
+- (void)hideKeyboard;
+
+@end
+
+#endif
diff --git a/backends/platform/ios7/ios7_keyboard.mm b/backends/platform/ios7/ios7_keyboard.mm
new file mode 100644
index 0000000000..7923a1cda9
--- /dev/null
+++ b/backends/platform/ios7/ios7_keyboard.mm
@@ -0,0 +1,98 @@
+/* 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.
+ *
+ */
+
+#include "ios7_keyboard.h"
+
+@interface UITextInputTraits
+- (void)setAutocorrectionType:(int)type;
+- (void)setAutocapitalizationType:(int)type;
+- (void)setEnablesReturnKeyAutomatically:(BOOL)val;
+@end
+
+@interface TextInputHandler : UITextView {
+	SoftKeyboard *softKeyboard;
+}
+
+- (id)initWithKeyboard:(SoftKeyboard *)keyboard;
+
+@end
+
+
+@implementation TextInputHandler
+
+- (id)initWithKeyboard:(SoftKeyboard *)keyboard {
+	self = [super initWithFrame:CGRectMake(0.0f, 0.0f, 0.0f, 0.0f)];
+	softKeyboard = keyboard;
+
+	[self setAutocorrectionType:UITextAutocorrectionTypeNo];
+	[self setAutocapitalizationType:UITextAutocapitalizationTypeNone];
+	[self setEnablesReturnKeyAutomatically:NO];
+
+	return self;
+}
+
+@end
+
+
+@implementation SoftKeyboard
+
+- (id)initWithFrame:(CGRect)frame {
+	self = [super initWithFrame:frame];
+	inputDelegate = nil;
+	inputView = [[TextInputHandler alloc] initWithKeyboard:self];
+	inputView.delegate = self;
+	return self;
+}
+
+- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
+	unichar c;
+	if (text.length) {
+		c = [text characterAtIndex:0];
+	}
+	else {
+		c = '\b';
+	}
+	[inputDelegate handleKeyPress:c];
+	return YES;
+}
+
+- (UITextView *)inputView {
+	return inputView;
+}
+
+- (void)setInputDelegate:(id)delegate {
+	inputDelegate = delegate;
+}
+
+- (void)handleKeyPress:(unichar)c {
+	[inputDelegate handleKeyPress:c];
+}
+
+- (void)showKeyboard {
+	[inputView becomeFirstResponder];
+}
+
+- (void)hideKeyboard {
+	[inputView endEditing:YES];
+}
+
+@end
diff --git a/backends/platform/ios7/ios7_main.mm b/backends/platform/ios7/ios7_main.mm
new file mode 100644
index 0000000000..96f41f4c02
--- /dev/null
+++ b/backends/platform/ios7/ios7_main.mm
@@ -0,0 +1,47 @@
+/* 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.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include <UIKit/UIKit.h>
+#include <Foundation/NSThread.h>
+
+#include "ios7_video.h"
+
+
+int iOS7_argc;
+char **iOS7_argv;
+
+int main(int argc, char **argv) {
+	int returnCode;
+
+	@autoreleasepool {
+		iOS7_argc = argc;
+		iOS7_argv = argv;
+
+		returnCode = UIApplicationMain(argc, argv, @"UIApplication", @"iOS7AppDelegate");
+	}
+
+	return returnCode;
+}
+
diff --git a/backends/platform/ios7/ios7_osys_events.cpp b/backends/platform/ios7/ios7_osys_events.cpp
new file mode 100644
index 0000000000..7e805f34b7
--- /dev/null
+++ b/backends/platform/ios7/ios7_osys_events.cpp
@@ -0,0 +1,576 @@
+/* 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.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "gui/message.h"
+#include "common/translation.h"
+
+#include "ios7_osys_main.h"
+
+static const int kQueuedInputEventDelay = 50;
+
+bool OSystem_iOS7::pollEvent(Common::Event &event) {
+	//printf("pollEvent()\n");
+
+	long curTime = getMillis();
+
+	if (_timerCallback && (curTime >= _timerCallbackNext)) {
+		_timerCallback(_timerCallbackTimer);
+		_timerCallbackNext = curTime + _timerCallbackTimer;
+	}
+
+	if (_queuedInputEvent.type != Common::EVENT_INVALID && curTime >= _queuedEventTime) {
+		event = _queuedInputEvent;
+		_queuedInputEvent.type = Common::EVENT_INVALID;
+		return true;
+	}
+
+	InternalEvent internalEvent;
+
+	if (iOS7_fetchEvent(&internalEvent)) {
+		switch (internalEvent.type) {
+		case kInputMouseDown:
+			if (!handleEvent_mouseDown(event, internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+
+		case kInputMouseUp:
+			if (!handleEvent_mouseUp(event, internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+
+		case kInputMouseDragged:
+			if (!handleEvent_mouseDragged(event, internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+
+		case kInputOrientationChanged:
+			handleEvent_orientationChanged(internalEvent.value1);
+			return false;
+
+		case kInputApplicationSuspended:
+			handleEvent_applicationSuspended();
+			return false;
+
+		case kInputApplicationResumed:
+			handleEvent_applicationResumed();
+			return false;
+
+		case kInputMouseSecondDragged:
+			if (!handleEvent_mouseSecondDragged(event, internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+		case kInputMouseSecondDown:
+			_secondaryTapped = true;
+			if (!handleEvent_secondMouseDown(event, internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+		case kInputMouseSecondUp:
+			_secondaryTapped = false;
+			if (!handleEvent_secondMouseUp(event, internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+			
+		case kInputKeyPressed:
+			handleEvent_keyPressed(event, internalEvent.value1);
+			break;
+			
+		case kInputSwipe:
+			if (!handleEvent_swipe(event, internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+			
+		case kInputTap:
+			if (!handleEvent_tap(event, (UIViewTapDescription) internalEvent.value1, internalEvent.value2))
+				return false;
+			break;
+
+		default:
+			break;
+		}
+		
+		return true;
+	}
+	return false;
+}
+
+bool OSystem_iOS7::handleEvent_mouseDown(Common::Event &event, int x, int y) {
+	//printf("Mouse down at (%u, %u)\n", x, y);
+
+	// Workaround: kInputMouseSecondToggled isn't always sent when the
+	// secondary finger is lifted. Need to make sure we get out of that mode.
+	_secondaryTapped = false;
+
+	if (_touchpadModeEnabled) {
+		_lastPadX = x;
+		_lastPadY = y;
+	} else
+		warpMouse(x, y);
+
+	if (_mouseClickAndDragEnabled) {
+		event.type = Common::EVENT_LBUTTONDOWN;
+		event.mouse.x = _videoContext->mouseX;
+		event.mouse.y = _videoContext->mouseY;
+		return true;
+	} else {
+		_lastMouseDown = getMillis();
+	}
+	return false;
+}
+
+bool OSystem_iOS7::handleEvent_mouseUp(Common::Event &event, int x, int y) {
+	//printf("Mouse up at (%u, %u)\n", x, y);
+
+	if (_secondaryTapped) {
+		_secondaryTapped = false;
+		if (!handleEvent_secondMouseUp(event, x, y))
+			return false;
+	} else if (_mouseClickAndDragEnabled) {
+		event.type = Common::EVENT_LBUTTONUP;
+		event.mouse.x = _videoContext->mouseX;
+		event.mouse.y = _videoContext->mouseY;
+	} else {
+		if (getMillis() - _lastMouseDown < 250) {
+			event.type = Common::EVENT_LBUTTONDOWN;
+			event.mouse.x = _videoContext->mouseX;
+			event.mouse.y = _videoContext->mouseY;
+
+			_queuedInputEvent.type = Common::EVENT_LBUTTONUP;
+			_queuedInputEvent.mouse.x = _videoContext->mouseX;
+			_queuedInputEvent.mouse.y = _videoContext->mouseY;
+			_lastMouseTap = getMillis();
+			_queuedEventTime = _lastMouseTap + kQueuedInputEventDelay;
+		} else
+			return false;
+	}
+
+	return true;
+}
+
+bool OSystem_iOS7::handleEvent_secondMouseDown(Common::Event &event, int x, int y) {
+	_lastSecondaryDown = getMillis();
+	_gestureStartX = x;
+	_gestureStartY = y;
+
+	if (_mouseClickAndDragEnabled) {
+		event.type = Common::EVENT_LBUTTONUP;
+		event.mouse.x = _videoContext->mouseX;
+		event.mouse.y = _videoContext->mouseY;
+
+		_queuedInputEvent.type = Common::EVENT_RBUTTONDOWN;
+		_queuedInputEvent.mouse.x = _videoContext->mouseX;
+		_queuedInputEvent.mouse.y = _videoContext->mouseY;
+	} else
+		return false;
+
+	return true;
+}
+
+bool OSystem_iOS7::handleEvent_secondMouseUp(Common::Event &event, int x, int y) {
+	int curTime = getMillis();
+
+	if (curTime - _lastSecondaryDown < 400) {
+		//printf("Right tap!\n");
+		if (curTime - _lastSecondaryTap < 400 && !_videoContext->overlayVisible) {
+			//printf("Right escape!\n");
+			event.type = Common::EVENT_KEYDOWN;
+			_queuedInputEvent.type = Common::EVENT_KEYUP;
+
+			event.kbd.flags = _queuedInputEvent.kbd.flags = 0;
+			event.kbd.keycode = _queuedInputEvent.kbd.keycode = Common::KEYCODE_ESCAPE;
+			event.kbd.ascii = _queuedInputEvent.kbd.ascii = Common::ASCII_ESCAPE;
+			_queuedEventTime = curTime + kQueuedInputEventDelay;
+			_lastSecondaryTap = 0;
+		} else if (!_mouseClickAndDragEnabled) {
+			//printf("Rightclick!\n");
+			event.type = Common::EVENT_RBUTTONDOWN;
+			event.mouse.x = _videoContext->mouseX;
+			event.mouse.y = _videoContext->mouseY;
+			_queuedInputEvent.type = Common::EVENT_RBUTTONUP;
+			_queuedInputEvent.mouse.x = _videoContext->mouseX;
+			_queuedInputEvent.mouse.y = _videoContext->mouseY;
+			_lastSecondaryTap = curTime;
+			_queuedEventTime = curTime + kQueuedInputEventDelay;
+		} else {
+			//printf("Right nothing!\n");
+			return false;
+		}
+	}
+	if (_mouseClickAndDragEnabled) {
+		event.type = Common::EVENT_RBUTTONUP;
+		event.mouse.x = _videoContext->mouseX;
+		event.mouse.y = _videoContext->mouseY;
+	}
+
+	return true;
+}
+
+bool OSystem_iOS7::handleEvent_mouseDragged(Common::Event &event, int x, int y) {
+	if (_lastDragPosX == x && _lastDragPosY == y)
+		return false;
+
+	_lastDragPosX = x;
+	_lastDragPosY = y;
+
+	//printf("Mouse dragged at (%u, %u)\n", x, y);
+	int mouseNewPosX;
+	int mouseNewPosY;
+	if (_touchpadModeEnabled) {
+		int deltaX = _lastPadX - x;
+		int deltaY = _lastPadY - y;
+		_lastPadX = x;
+		_lastPadY = y;
+
+		mouseNewPosX = (int)(_videoContext->mouseX - deltaX / 0.5f);
+		mouseNewPosY = (int)(_videoContext->mouseY - deltaY / 0.5f);
+
+		int widthCap = _videoContext->overlayVisible ? _videoContext->overlayWidth : _videoContext->screenWidth;
+		int heightCap = _videoContext->overlayVisible ? _videoContext->overlayHeight : _videoContext->screenHeight;
+
+		if (mouseNewPosX < 0)
+			mouseNewPosX = 0;
+		else if (mouseNewPosX > widthCap)
+			mouseNewPosX = widthCap;
+
+		if (mouseNewPosY < 0)
+			mouseNewPosY = 0;
+		else if (mouseNewPosY > heightCap)
+			mouseNewPosY = heightCap;
+
+	} else {
+		mouseNewPosX = x;
+		mouseNewPosY = y;
+	}
+
+	event.type = Common::EVENT_MOUSEMOVE;
+	event.mouse.x = mouseNewPosX;
+	event.mouse.y = mouseNewPosY;
+	warpMouse(mouseNewPosX, mouseNewPosY);
+
+	return true;
+}
+
+bool OSystem_iOS7::handleEvent_mouseSecondDragged(Common::Event &event, int x, int y) {
+	if (_gestureStartX == -1 || _gestureStartY == -1) {
+		return false;
+	}
+
+	static const int kNeededLength = 100;
+	static const int kMaxDeviation = 20;
+
+	int vecX = (x - _gestureStartX);
+	int vecY = (y - _gestureStartY);
+
+	int absX = abs(vecX);
+	int absY = abs(vecY);
+
+	//printf("(%d, %d)\n", vecX, vecY);
+
+	if (absX >= kNeededLength || absY >= kNeededLength) { // Long enough gesture to react upon.
+		_gestureStartX = -1;
+		_gestureStartY = -1;
+
+		if (absX < kMaxDeviation && vecY >= kNeededLength) {
+			// Swipe down
+			event.type = Common::EVENT_MAINMENU;
+			_queuedInputEvent.type = Common::EVENT_INVALID;
+
+			_queuedEventTime = getMillis() + kQueuedInputEventDelay;
+			return true;
+		}
+
+		if (absX < kMaxDeviation && -vecY >= kNeededLength) {
+			// Swipe up
+			_mouseClickAndDragEnabled = !_mouseClickAndDragEnabled;
+			const char *dialogMsg;
+			if (_mouseClickAndDragEnabled) {
+				_touchpadModeEnabled = false;
+				dialogMsg = _("Mouse-click-and-drag mode enabled.");
+			} else
+				dialogMsg = _("Mouse-click-and-drag mode disabled.");
+			GUI::TimedMessageDialog dialog(dialogMsg, 1500);
+			dialog.runModal();
+			return false;
+		}
+
+		if (absY < kMaxDeviation && vecX >= kNeededLength) {
+			// Swipe right
+			_touchpadModeEnabled = !_touchpadModeEnabled;
+			const char *dialogMsg;
+			if (_touchpadModeEnabled)
+				dialogMsg = _("Touchpad mode enabled.");
+			else
+				dialogMsg = _("Touchpad mode disabled.");
+			GUI::TimedMessageDialog dialog(dialogMsg, 1500);
+			dialog.runModal();
+			return false;
+
+		}
+
+		if (absY < kMaxDeviation && -vecX >= kNeededLength) {
+			// Swipe left
+			return false;
+		}
+	}
+
+	return false;
+}
+
+void  OSystem_iOS7::handleEvent_orientationChanged(int orientation) {
+	//printf("Orientation: %i\n", orientation);
+
+	ScreenOrientation newOrientation;
+	switch (orientation) {
+	case 1:
+		newOrientation = kScreenOrientationPortrait;
+		break;
+	case 3:
+		newOrientation = kScreenOrientationLandscape;
+		break;
+	case 4:
+		newOrientation = kScreenOrientationFlippedLandscape;
+		break;
+	default:
+		return;
+	}
+
+	if (_screenOrientation != newOrientation) {
+		_screenOrientation = newOrientation;
+		rebuildSurface();
+	}
+}
+
+void OSystem_iOS7::rebuildSurface() {
+	updateOutputSurface();
+
+	dirtyFullScreen();
+	if (_videoContext->overlayVisible) {
+			dirtyFullOverlayScreen();
+		}
+	updateScreen();
+}
+
+void OSystem_iOS7::handleEvent_applicationSuspended() {
+	suspendLoop();
+}
+
+void OSystem_iOS7::handleEvent_applicationResumed() {
+	rebuildSurface();
+}
+
+void  OSystem_iOS7::handleEvent_keyPressed(Common::Event &event, int keyPressed) {
+	int ascii = keyPressed;
+	//printf("key: %i\n", keyPressed);
+
+	// We remap some of the iPhone keyboard keys.
+	// The first ten here are the row of symbols below the numeric keys.
+	switch (keyPressed) {
+	case 45:
+		keyPressed = Common::KEYCODE_F1;
+		ascii = Common::ASCII_F1;
+		break;
+	case 47:
+		keyPressed = Common::KEYCODE_F2;
+		ascii = Common::ASCII_F2;
+		break;
+	case 58:
+		keyPressed = Common::KEYCODE_F3;
+		ascii = Common::ASCII_F3;
+		break;
+	case 59:
+		keyPressed = Common::KEYCODE_F4;
+		ascii = Common::ASCII_F4;
+		break;
+	case 40:
+		keyPressed = Common::KEYCODE_F5;
+		ascii = Common::ASCII_F5;
+		break;
+	case 41:
+		keyPressed = Common::KEYCODE_F6;
+		ascii = Common::ASCII_F6;
+		break;
+	case 36:
+		keyPressed = Common::KEYCODE_F7;
+		ascii = Common::ASCII_F7;
+		break;
+	case 38:
+		keyPressed = Common::KEYCODE_F8;
+		ascii = Common::ASCII_F8;
+		break;
+	case 64:
+		keyPressed = Common::KEYCODE_F9;
+		ascii = Common::ASCII_F9;
+		break;
+	case 34:
+		keyPressed = Common::KEYCODE_F10;
+		ascii = Common::ASCII_F10;
+		break;
+	case 10:
+		keyPressed = Common::KEYCODE_RETURN;
+		ascii = Common::ASCII_RETURN;
+		break;
+	}
+	event.type = Common::EVENT_KEYDOWN;
+	_queuedInputEvent.type = Common::EVENT_KEYUP;
+
+	event.kbd.flags = _queuedInputEvent.kbd.flags = 0;
+	event.kbd.keycode = _queuedInputEvent.kbd.keycode = (Common::KeyCode)keyPressed;
+	event.kbd.ascii = _queuedInputEvent.kbd.ascii = ascii;
+	_queuedEventTime = getMillis() + kQueuedInputEventDelay;
+}
+
+bool OSystem_iOS7::handleEvent_swipe(Common::Event &event, int direction, int touches) {
+	if (touches == 1) {
+		Common::KeyCode keycode = Common::KEYCODE_INVALID;
+		switch (_screenOrientation) {
+		case kScreenOrientationPortrait:
+			switch ((UIViewSwipeDirection)direction) {
+				case kUIViewSwipeUp:
+					keycode = Common::KEYCODE_UP;
+					break;
+				case kUIViewSwipeDown:
+					keycode = Common::KEYCODE_DOWN;
+					break;
+				case kUIViewSwipeLeft:
+					keycode = Common::KEYCODE_LEFT;
+					break;
+				case kUIViewSwipeRight:
+					keycode = Common::KEYCODE_RIGHT;
+					break;
+				default:
+					return false;
+			}
+			break;
+		case kScreenOrientationLandscape:
+			switch ((UIViewSwipeDirection)direction) {
+				case kUIViewSwipeUp:
+					keycode = Common::KEYCODE_LEFT;
+					break;
+				case kUIViewSwipeDown:
+					keycode = Common::KEYCODE_RIGHT;
+					break;
+				case kUIViewSwipeLeft:
+					keycode = Common::KEYCODE_DOWN;
+					break;
+				case kUIViewSwipeRight:
+					keycode = Common::KEYCODE_UP;
+					break;
+				default:
+					return false;
+			}
+			break;
+		case kScreenOrientationFlippedLandscape:
+			switch ((UIViewSwipeDirection)direction) {
+				case kUIViewSwipeUp:
+					keycode = Common::KEYCODE_RIGHT;
+					break;
+				case kUIViewSwipeDown:
+					keycode = Common::KEYCODE_LEFT;
+					break;
+				case kUIViewSwipeLeft:
+					keycode = Common::KEYCODE_UP;
+					break;
+				case kUIViewSwipeRight:
+					keycode = Common::KEYCODE_DOWN;
+					break;
+				default:
+					return false;
+			}
+			break;
+		}
+		
+		event.kbd.keycode = _queuedInputEvent.kbd.keycode = keycode;
+		event.kbd.ascii = _queuedInputEvent.kbd.ascii = 0;
+		event.type = Common::EVENT_KEYDOWN;
+		_queuedInputEvent.type = Common::EVENT_KEYUP;
+		event.kbd.flags = _queuedInputEvent.kbd.flags = 0;
+		_queuedEventTime = getMillis() + kQueuedInputEventDelay;
+		
+		return true;
+	}
+	else if (touches == 2) {
+		switch ((UIViewSwipeDirection)direction) {
+		case kUIViewSwipeUp: {
+			_mouseClickAndDragEnabled = !_mouseClickAndDragEnabled;
+			const char *dialogMsg;
+			if (_mouseClickAndDragEnabled) {
+				_touchpadModeEnabled = false;
+				dialogMsg = _("Mouse-click-and-drag mode enabled.");
+			} else
+				dialogMsg = _("Mouse-click-and-drag mode disabled.");
+			GUI::TimedMessageDialog dialog(dialogMsg, 1500);
+			dialog.runModal();
+			return false;
+		}
+
+		case kUIViewSwipeDown: {
+			// Swipe down
+			event.type = Common::EVENT_MAINMENU;
+			_queuedInputEvent.type = Common::EVENT_INVALID;
+			_queuedEventTime = getMillis() + kQueuedInputEventDelay;
+			return true;
+		}
+
+		case kUIViewSwipeRight: {
+			// Swipe right
+			_touchpadModeEnabled = !_touchpadModeEnabled;
+			const char *dialogMsg;
+			if (_touchpadModeEnabled)
+				dialogMsg = _("Touchpad mode enabled.");
+			else
+				dialogMsg = _("Touchpad mode disabled.");
+			GUI::TimedMessageDialog dialog(dialogMsg, 1500);
+			dialog.runModal();
+			return false;
+		}
+
+		default:
+			break;
+		}
+	}
+	return false;
+}
+
+bool OSystem_iOS7::handleEvent_tap(Common::Event &event, UIViewTapDescription type, int touches) {
+	if (touches == 1) {
+		if (type == kUIViewTapDouble) {
+			event.type = Common::EVENT_RBUTTONDOWN;
+			_queuedInputEvent.type = Common::EVENT_RBUTTONUP;
+			_queuedEventTime = getMillis() + kQueuedInputEventDelay;
+			return true;
+		}
+	}
+	else if (touches == 2) {
+		if (type == kUIViewTapDouble) {
+			event.kbd.keycode = _queuedInputEvent.kbd.keycode = Common::KEYCODE_ESCAPE;
+			event.kbd.ascii = _queuedInputEvent.kbd.ascii = Common::ASCII_ESCAPE;
+			event.type = Common::EVENT_KEYDOWN;
+			_queuedInputEvent.type = Common::EVENT_KEYUP;
+			event.kbd.flags = _queuedInputEvent.kbd.flags = 0;
+			_queuedEventTime = getMillis() + kQueuedInputEventDelay;
+			return true;
+		}
+	}
+	return false;
+}
diff --git a/backends/platform/ios7/ios7_osys_main.cpp b/backends/platform/ios7/ios7_osys_main.cpp
new file mode 100644
index 0000000000..cd62148ca9
--- /dev/null
+++ b/backends/platform/ios7/ios7_osys_main.cpp
@@ -0,0 +1,366 @@
+/* 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.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include <unistd.h>
+#include <pthread.h>
+#include <string.h>
+
+#include <sys/time.h>
+#include <QuartzCore/QuartzCore.h>
+
+#include "common/scummsys.h"
+#include "common/util.h"
+#include "common/rect.h"
+#include "common/file.h"
+#include "common/fs.h"
+
+#include "base/main.h"
+
+#include "backends/saves/default/default-saves.h"
+#include "backends/timer/default/default-timer.h"
+#include "backends/fs/chroot/chroot-fs-factory.h"
+#include "backends/fs/posix/posix-fs.h"
+#include "audio/mixer.h"
+#include "audio/mixer_intern.h"
+
+#include "graphics/scaler.h"
+#include "graphics/scaler/aspect.h"
+
+#include "ios7_osys_main.h"
+
+
+const OSystem::GraphicsMode OSystem_iOS7::s_supportedGraphicsModes[] = {
+	{ "none", "No filtering", kGraphicsModeNone },
+	{ "linear", "Linear filtering", kGraphicsModeLinear },
+#ifdef USE_SCALERS
+//	{"2x", "2x", GFX_DOUBLESIZE},
+//	{"3x", "3x", GFX_TRIPLESIZE},
+	{ "2xsai", "2xSAI", kGraphicsMode2xSaI},
+	{"super2xsai", "Super2xSAI", kGraphicsModeSuper2xSaI},
+	{"supereagle", "SuperEagle", kGraphicsModeSuperEagle},
+	{"advmame2x", "AdvMAME2x", kGraphicsModeAdvMame2x},
+	{"advmame3x", "AdvMAME3x", kGraphicsModeAdvMame3x},
+#ifdef USE_HQ_SCALERS
+	{"hq2x", "HQ2x", kGraphicsModeHQ2x},
+	{"hq3x", "HQ3x", kGraphicsModeHQ3x},
+#endif
+	{"tv2x", "TV2x", kGraphicsModeTV2x},
+	{"dotmatrix", "DotMatrix", kGraphicsModeDotMatrix},
+#endif
+	{ 0, 0, 0 }
+};
+
+AQCallbackStruct OSystem_iOS7::s_AudioQueue;
+SoundProc OSystem_iOS7::s_soundCallback = NULL;
+void *OSystem_iOS7::s_soundParam = NULL;
+
+OSystem_iOS7::OSystem_iOS7() :
+	_mixer(NULL), _lastMouseTap(0), _queuedEventTime(0),
+	_mouseNeedTextureUpdate(false), _secondaryTapped(false), _lastSecondaryTap(0),
+	_screenOrientation(kScreenOrientationFlippedLandscape), _mouseClickAndDragEnabled(false),
+	_gestureStartX(-1), _gestureStartY(-1), _fullScreenIsDirty(false), _fullScreenOverlayIsDirty(false),
+	_mouseDirty(false), _timeSuspended(0), _lastDragPosX(-1), _lastDragPosY(-1), _screenChangeCount(0),
+	_lastErrorMessage(NULL), _mouseCursorPaletteEnabled(false), _gfxTransactionError(kTransactionSuccess) {
+	_queuedInputEvent.type = Common::EVENT_INVALID;
+	_touchpadModeEnabled = !iOS7_isBigDevice();
+#ifdef IPHONE_OFFICIAL
+	_fsFactory = new ChRootFilesystemFactory(iOS7_getDocumentsDir());
+#else
+	_fsFactory = new POSIXFilesystemFactory();
+#endif
+	initVideoContext();
+
+	memset(_gamePalette, 0, sizeof(_gamePalette));
+	memset(_gamePaletteRGBA5551, 0, sizeof(_gamePaletteRGBA5551));
+	memset(_mouseCursorPalette, 0, sizeof(_mouseCursorPalette));
+}
+
+OSystem_iOS7::~OSystem_iOS7() {
+	AudioQueueDispose(s_AudioQueue.queue, true);
+
+	delete _mixer;
+	// Prevent accidental freeing of the screen texture here. This needs to be
+	// checked since we might use the screen texture as framebuffer in the case
+	// of hi-color games for example. Otherwise this can lead to a double free.
+	if (_framebuffer.getPixels() != _videoContext->screenTexture.getPixels())
+		_framebuffer.free();
+	_mouseBuffer.free();
+}
+
+bool OSystem_iOS7::touchpadModeEnabled() const {
+	return _touchpadModeEnabled;
+}
+
+int OSystem_iOS7::timerHandler(int t) {
+	DefaultTimerManager *tm = (DefaultTimerManager *)g_system->getTimerManager();
+	tm->handler();
+	return t;
+}
+
+void OSystem_iOS7::initBackend() {
+#ifdef IPHONE_OFFICIAL
+	_savefileManager = new DefaultSaveFileManager("/Savegames");
+#else
+	_savefileManager = new DefaultSaveFileManager(SCUMMVM_SAVE_PATH);
+#endif
+
+	_timerManager = new DefaultTimerManager();
+
+	gettimeofday(&_startTime, NULL);
+
+	setupMixer();
+
+	setTimerCallback(&OSystem_iOS7::timerHandler, 10);
+
+	EventsBaseBackend::initBackend();
+}
+
+bool OSystem_iOS7::hasFeature(Feature f) {
+	switch (f) {
+	case kFeatureCursorPalette:
+		return true;
+
+	default:
+		return false;
+	}
+}
+
+void OSystem_iOS7::setFeatureState(Feature f, bool enable) {
+	switch (f) {
+	case kFeatureCursorPalette:
+		if (_mouseCursorPaletteEnabled != enable) {
+			_mouseNeedTextureUpdate = true;
+			_mouseDirty = true;
+			_mouseCursorPaletteEnabled = enable;
+		}
+		break;
+	case kFeatureAspectRatioCorrection:
+		_videoContext->asprectRatioCorrection = enable;
+		break;
+
+	default:
+		break;
+	}
+}
+
+bool OSystem_iOS7::getFeatureState(Feature f) {
+	switch (f) {
+	case kFeatureCursorPalette:
+		return _mouseCursorPaletteEnabled;
+	case kFeatureAspectRatioCorrection:
+		return _videoContext->asprectRatioCorrection;
+
+	default:
+		return false;
+	}
+}
+
+void OSystem_iOS7::suspendLoop() {
+	bool done = false;
+	uint32 startTime = getMillis();
+
+	stopSoundsystem();
+
+	InternalEvent event;
+	while (!done) {
+		if (iOS7_fetchEvent(&event))
+			if (event.type == kInputApplicationResumed)
+				done = true;
+		usleep(100000);
+	}
+
+	startSoundsystem();
+
+	_timeSuspended += getMillis() - startTime;
+}
+
+uint32 OSystem_iOS7::getMillis(bool skipRecord) {
+	CFTimeInterval timeInSeconds = CACurrentMediaTime();
+	return (uint32) (timeInSeconds * 1000.0);
+}
+
+void OSystem_iOS7::delayMillis(uint msecs) {
+	//printf("delayMillis(%d)\n", msecs);
+	usleep(msecs * 1000);
+}
+
+OSystem::MutexRef OSystem_iOS7::createMutex(void) {
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+
+	pthread_mutex_t *mutex = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t));
+	if (pthread_mutex_init(mutex, &attr) != 0) {
+		printf("pthread_mutex_init() failed!\n");
+		free(mutex);
+		return NULL;
+	}
+
+	return (MutexRef)mutex;
+}
+
+void OSystem_iOS7::lockMutex(MutexRef mutex) {
+	if (pthread_mutex_lock((pthread_mutex_t *) mutex) != 0) {
+		printf("pthread_mutex_lock() failed!\n");
+	}
+}
+
+void OSystem_iOS7::unlockMutex(MutexRef mutex) {
+	if (pthread_mutex_unlock((pthread_mutex_t *) mutex) != 0) {
+		printf("pthread_mutex_unlock() failed!\n");
+	}
+}
+
+void OSystem_iOS7::deleteMutex(MutexRef mutex) {
+	if (pthread_mutex_destroy((pthread_mutex_t *) mutex) != 0) {
+		printf("pthread_mutex_destroy() failed!\n");
+	} else {
+		free(mutex);
+	}
+}
+
+
+void OSystem_iOS7::setTimerCallback(TimerProc callback, int interval) {
+	//printf("setTimerCallback()\n");
+
+	if (callback != NULL) {
+		_timerCallbackTimer = interval;
+		_timerCallbackNext = getMillis() + interval;
+		_timerCallback = callback;
+	} else
+		_timerCallback = NULL;
+}
+
+void OSystem_iOS7::quit() {
+}
+
+void OSystem_iOS7::getTimeAndDate(TimeDate &td) const {
+	time_t curTime = time(0);
+	struct tm t = *localtime(&curTime);
+	td.tm_sec = t.tm_sec;
+	td.tm_min = t.tm_min;
+	td.tm_hour = t.tm_hour;
+	td.tm_mday = t.tm_mday;
+	td.tm_mon = t.tm_mon;
+	td.tm_year = t.tm_year;
+	td.tm_wday = t.tm_wday;
+}
+
+Audio::Mixer *OSystem_iOS7::getMixer() {
+	assert(_mixer);
+	return _mixer;
+}
+
+OSystem_iOS7 *OSystem_iOS7::sharedInstance() {
+	static OSystem_iOS7 *instance = new OSystem_iOS7();
+	return instance;
+}
+
+Common::String OSystem_iOS7::getDefaultConfigFileName() {
+#ifdef IPHONE_OFFICIAL
+	Common::String path = "/Preferences";
+	return path;
+#else
+	return SCUMMVM_PREFS_PATH;
+#endif
+}
+
+void OSystem_iOS7::addSysArchivesToSearchSet(Common::SearchSet &s, int priority) {
+	// Get URL of the Resource directory of the .app bundle
+	CFURLRef fileUrl = CFBundleCopyResourcesDirectoryURL(CFBundleGetMainBundle());
+	if (fileUrl) {
+		// Try to convert the URL to an absolute path
+		UInt8 buf[MAXPATHLEN];
+		if (CFURLGetFileSystemRepresentation(fileUrl, true, buf, sizeof(buf))) {
+			// Success: Add it to the search path
+			Common::String bundlePath((const char *)buf);
+#ifdef IPHONE_OFFICIAL
+			POSIXFilesystemNode *posixNode = new POSIXFilesystemNode(bundlePath);
+			Common::FSNode *node = new Common::FSNode(posixNode);
+			s.add("__OSX_BUNDLE__", new Common::FSDirectory(*node), priority);
+#else
+			// OS X
+			s.add("__OSX_BUNDLE__", new Common::FSDirectory(bundlePath), priority);
+#endif
+		}
+		CFRelease(fileUrl);
+	}
+}
+
+void OSystem_iOS7::logMessage(LogMessageType::Type type, const char *message) {
+	FILE *output = 0;
+
+	if (type == LogMessageType::kInfo || type == LogMessageType::kDebug)
+		output = stdout;
+	else
+		output = stderr;
+
+	if (type == LogMessageType::kError) {
+		free(_lastErrorMessage);
+		_lastErrorMessage = strdup(message);
+	}
+
+	fputs(message, output);
+	fflush(output);
+}
+
+bool iOS7_touchpadModeEnabled() {
+	OSystem_iOS7 *sys = (OSystem_iOS7 *) g_system;
+	return sys && sys->touchpadModeEnabled();
+}
+
+void iOS7_main(int argc, char **argv) {
+
+	//OSystem_iOS7::migrateApp();
+
+	FILE *newfp = fopen("/var/mobile/.scummvm.log", "a");
+	if (newfp != NULL) {
+		fclose(stdout);
+		fclose(stderr);
+		*stdout = *newfp;
+		*stderr = *newfp;
+		setbuf(stdout, NULL);
+		setbuf(stderr, NULL);
+
+		//extern int gDebugLevel;
+		//gDebugLevel = 10;
+	}
+
+#ifdef IPHONE_OFFICIAL
+	chdir(iOS7_getDocumentsDir());
+#else
+	system("mkdir " SCUMMVM_ROOT_PATH);
+	system("mkdir " SCUMMVM_SAVE_PATH);
+
+	chdir("/var/mobile/");
+#endif
+
+	g_system = OSystem_iOS7::sharedInstance();
+	assert(g_system);
+
+	// Invoke the actual ScummVM main entry point:
+	scummvm_main(argc, (const char *const *) argv);
+	g_system->quit();       // TODO: Consider removing / replacing this!
+}
diff --git a/backends/platform/ios7/ios7_osys_main.h b/backends/platform/ios7/ios7_osys_main.h
new file mode 100644
index 0000000000..eadb49e5ac
--- /dev/null
+++ b/backends/platform/ios7/ios7_osys_main.h
@@ -0,0 +1,233 @@
+/* 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 BACKENDS_PLATFORM_IPHONE_OSYS_MAIN_H
+#define BACKENDS_PLATFORM_IPHONE_OSYS_MAIN_H
+
+#include "graphics/surface.h"
+#include "ios7_common.h"
+#include "backends/base-backend.h"
+#include "common/events.h"
+#include "audio/mixer_intern.h"
+#include "backends/fs/posix/posix-fs-factory.h"
+#include "graphics/colormasks.h"
+#include "graphics/palette.h"
+
+#include <AudioToolbox/AudioQueue.h>
+
+#define AUDIO_BUFFERS 3
+#define WAVE_BUFFER_SIZE 2048
+#define AUDIO_SAMPLE_RATE 44100
+
+#define SCUMMVM_ROOT_PATH "/var/mobile/Library/ScummVM"
+#define SCUMMVM_SAVE_PATH SCUMMVM_ROOT_PATH "/Savegames"
+#define SCUMMVM_PREFS_PATH SCUMMVM_ROOT_PATH "/Preferences"
+
+typedef void (*SoundProc)(void *param, byte *buf, int len);
+typedef int (*TimerProc)(int interval);
+
+struct AQCallbackStruct {
+	AudioQueueRef queue;
+	uint32 frameCount;
+	AudioQueueBufferRef buffers[AUDIO_BUFFERS];
+	AudioStreamBasicDescription dataFormat;
+};
+
+class OSystem_iOS7 : public EventsBaseBackend, public PaletteManager {
+protected:
+	static const OSystem::GraphicsMode s_supportedGraphicsModes[];
+	static AQCallbackStruct s_AudioQueue;
+	static SoundProc s_soundCallback;
+	static void *s_soundParam;
+
+	Audio::MixerImpl *_mixer;
+
+	VideoContext *_videoContext;
+
+	Graphics::Surface _framebuffer;
+
+	// For signaling that screen format set up might have failed.
+	TransactionError _gfxTransactionError;
+
+	// For use with the game texture
+	uint16  _gamePalette[256];
+	// For use with the mouse texture
+	uint16  _gamePaletteRGBA5551[256];
+
+	struct timeval _startTime;
+	uint32 _timeSuspended;
+
+	bool _mouseCursorPaletteEnabled;
+	uint16 _mouseCursorPalette[256];
+	Graphics::Surface _mouseBuffer;
+	uint16 _mouseKeyColor;
+	bool _mouseDirty;
+	bool _mouseNeedTextureUpdate;
+
+	long _lastMouseDown;
+	long _lastMouseTap;
+	long _queuedEventTime;
+	Common::Event _queuedInputEvent;
+	bool _secondaryTapped;
+	long _lastSecondaryDown;
+	long _lastSecondaryTap;
+	int _gestureStartX, _gestureStartY;
+	bool _mouseClickAndDragEnabled;
+	bool _touchpadModeEnabled;
+	int _lastPadX;
+	int _lastPadY;
+	int _lastDragPosX;
+	int _lastDragPosY;
+
+	int _timerCallbackNext;
+	int _timerCallbackTimer;
+	TimerProc _timerCallback;
+
+	Common::Array<Common::Rect> _dirtyRects;
+	Common::Array<Common::Rect> _dirtyOverlayRects;
+	ScreenOrientation _screenOrientation;
+	bool _fullScreenIsDirty;
+	bool _fullScreenOverlayIsDirty;
+	int _screenChangeCount;
+
+	char *_lastErrorMessage;
+
+public:
+
+	OSystem_iOS7();
+	virtual ~OSystem_iOS7();
+
+	static OSystem_iOS7 *sharedInstance();
+
+	virtual void initBackend();
+
+	virtual bool hasFeature(Feature f);
+	virtual void setFeatureState(Feature f, bool enable);
+	virtual bool getFeatureState(Feature f);
+	virtual const GraphicsMode *getSupportedGraphicsModes() const;
+	virtual int getDefaultGraphicsMode() const;
+	virtual bool setGraphicsMode(int mode);
+	virtual int getGraphicsMode() const;
+	virtual void initSize(uint width, uint height, const Graphics::PixelFormat *format);
+
+	virtual void beginGFXTransaction();
+	virtual TransactionError endGFXTransaction();
+
+	virtual int16 getHeight();
+	virtual int16 getWidth();
+
+    bool touchpadModeEnabled() const;
+
+#ifdef USE_RGB_COLOR
+	virtual Graphics::PixelFormat getScreenFormat() const { return _framebuffer.format; }
+	virtual Common::List<Graphics::PixelFormat> getSupportedFormats() const;
+#endif
+
+	virtual PaletteManager *getPaletteManager() { return this; }
+protected:
+	// PaletteManager API
+	virtual void setPalette(const byte *colors, uint start, uint num);
+	virtual void grabPalette(byte *colors, uint start, uint num);
+
+public:
+	virtual void copyRectToScreen(const void *buf, int pitch, int x, int y, int w, int h);
+	virtual void updateScreen();
+	virtual Graphics::Surface *lockScreen();
+	virtual void unlockScreen();
+	virtual void setShakePos(int shakeOffset);
+
+	virtual void showOverlay();
+	virtual void hideOverlay();
+	virtual void clearOverlay();
+	virtual void grabOverlay(void *buf, int pitch);
+	virtual void copyRectToOverlay(const void *buf, int pitch, int x, int y, int w, int h);
+	virtual int16 getOverlayHeight();
+	virtual int16 getOverlayWidth();
+	virtual Graphics::PixelFormat getOverlayFormat() const { return Graphics::createPixelFormat<5551>(); }
+
+	virtual bool showMouse(bool visible);
+
+	virtual void warpMouse(int x, int y);
+	virtual void setMouseCursor(const void *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor = 255, bool dontScale = false, const Graphics::PixelFormat *format = NULL);
+	virtual void setCursorPalette(const byte *colors, uint start, uint num);
+
+	virtual bool pollEvent(Common::Event &event);
+	virtual uint32 getMillis(bool skipRecord = false);
+	virtual void delayMillis(uint msecs);
+
+	virtual MutexRef createMutex(void);
+	virtual void lockMutex(MutexRef mutex);
+	virtual void unlockMutex(MutexRef mutex);
+	virtual void deleteMutex(MutexRef mutex);
+
+	static void mixCallback(void *sys, byte *samples, int len);
+	virtual void setupMixer(void);
+	virtual void setTimerCallback(TimerProc callback, int interval);
+	virtual int getScreenChangeID() const { return _screenChangeCount; }
+	virtual void quit();
+
+	virtual void addSysArchivesToSearchSet(Common::SearchSet &s, int priority = 0);
+	virtual void getTimeAndDate(TimeDate &t) const;
+
+	virtual Audio::Mixer *getMixer();
+
+	void startSoundsystem();
+	void stopSoundsystem();
+
+	virtual Common::String getDefaultConfigFileName();
+
+	virtual void logMessage(LogMessageType::Type type, const char *message);
+	virtual void fatalError() override;
+
+protected:
+	void initVideoContext();
+	void updateOutputSurface();
+
+	void internUpdateScreen();
+	void dirtyFullScreen();
+	void dirtyFullOverlayScreen();
+	void suspendLoop();
+	void drawDirtyRect(const Common::Rect &dirtyRect);
+	void updateMouseTexture();
+	static void AQBufferCallback(void *in, AudioQueueRef inQ, AudioQueueBufferRef outQB);
+	static int timerHandler(int t);
+
+	bool handleEvent_swipe(Common::Event &event, int direction, int touches);
+	bool handleEvent_tap(Common::Event &event, UIViewTapDescription type, int touches);
+	void handleEvent_keyPressed(Common::Event &event, int keyPressed);
+	void handleEvent_orientationChanged(int orientation);
+	void handleEvent_applicationSuspended();
+	void handleEvent_applicationResumed();
+
+	bool handleEvent_mouseDown(Common::Event &event, int x, int y);
+	bool handleEvent_mouseUp(Common::Event &event, int x, int y);
+
+	bool handleEvent_secondMouseDown(Common::Event &event, int x, int y);
+	bool handleEvent_secondMouseUp(Common::Event &event, int x, int y);
+
+	bool handleEvent_mouseDragged(Common::Event &event, int x, int y);
+	bool handleEvent_mouseSecondDragged(Common::Event &event, int x, int y);
+
+	void rebuildSurface();
+};
+
+#endif
diff --git a/backends/platform/ios7/ios7_osys_sound.cpp b/backends/platform/ios7/ios7_osys_sound.cpp
new file mode 100644
index 0000000000..0dc81a9385
--- /dev/null
+++ b/backends/platform/ios7/ios7_osys_sound.cpp
@@ -0,0 +1,105 @@
+/* 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.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "ios7_osys_main.h"
+
+void OSystem_iOS7::AQBufferCallback(void *in, AudioQueueRef inQ, AudioQueueBufferRef outQB) {
+	//printf("AQBufferCallback()\n");
+	if (s_AudioQueue.frameCount > 0 && s_soundCallback != NULL) {
+		outQB->mAudioDataByteSize = 4 * s_AudioQueue.frameCount;
+		s_soundCallback(s_soundParam, (byte *)outQB->mAudioData, outQB->mAudioDataByteSize);
+		AudioQueueEnqueueBuffer(inQ, outQB, 0, NULL);
+	} else {
+		AudioQueueStop(s_AudioQueue.queue, false);
+	}
+}
+
+void OSystem_iOS7::mixCallback(void *sys, byte *samples, int len) {
+	OSystem_iOS7 *this_ = (OSystem_iOS7 *)sys;
+	assert(this_);
+
+	if (this_->_mixer) {
+		this_->_mixer->mixCallback(samples, len);
+	}
+}
+
+void OSystem_iOS7::setupMixer() {
+	_mixer = new Audio::MixerImpl(this, AUDIO_SAMPLE_RATE);
+
+	s_soundCallback = mixCallback;
+	s_soundParam = this;
+
+	startSoundsystem();
+}
+
+void OSystem_iOS7::startSoundsystem() {
+	s_AudioQueue.dataFormat.mSampleRate = AUDIO_SAMPLE_RATE;
+	s_AudioQueue.dataFormat.mFormatID = kAudioFormatLinearPCM;
+	s_AudioQueue.dataFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
+	s_AudioQueue.dataFormat.mBytesPerPacket = 4;
+	s_AudioQueue.dataFormat.mFramesPerPacket = 1;
+	s_AudioQueue.dataFormat.mBytesPerFrame = 4;
+	s_AudioQueue.dataFormat.mChannelsPerFrame = 2;
+	s_AudioQueue.dataFormat.mBitsPerChannel = 16;
+	s_AudioQueue.frameCount = WAVE_BUFFER_SIZE;
+
+	if (AudioQueueNewOutput(&s_AudioQueue.dataFormat, AQBufferCallback, &s_AudioQueue, 0, kCFRunLoopCommonModes, 0, &s_AudioQueue.queue)) {
+		printf("Couldn't set the AudioQueue callback!\n");
+		_mixer->setReady(false);
+		return;
+	}
+
+	uint32 bufferBytes = s_AudioQueue.frameCount * s_AudioQueue.dataFormat.mBytesPerFrame;
+
+	for (int i = 0; i < AUDIO_BUFFERS; i++) {
+		if (AudioQueueAllocateBuffer(s_AudioQueue.queue, bufferBytes, &s_AudioQueue.buffers[i])) {
+			printf("Error allocating AudioQueue buffer!\n");
+			_mixer->setReady(false);
+			return;
+		}
+
+		AQBufferCallback(&s_AudioQueue, s_AudioQueue.queue, s_AudioQueue.buffers[i]);
+	}
+
+	AudioQueueSetParameter(s_AudioQueue.queue, kAudioQueueParam_Volume, 1.0);
+	if (AudioQueueStart(s_AudioQueue.queue, NULL)) {
+		printf("Error starting the AudioQueue!\n");
+		_mixer->setReady(false);
+		return;
+	}
+
+	_mixer->setReady(true);
+}
+
+void OSystem_iOS7::stopSoundsystem() {
+	AudioQueueStop(s_AudioQueue.queue, true);
+
+	for (int i = 0; i < AUDIO_BUFFERS; i++) {
+		AudioQueueFreeBuffer(s_AudioQueue.queue, s_AudioQueue.buffers[i]);
+	}
+
+	AudioQueueDispose(s_AudioQueue.queue, true);
+	_mixer->setReady(false);
+}
diff --git a/backends/platform/ios7/ios7_osys_video.mm b/backends/platform/ios7/ios7_osys_video.mm
new file mode 100644
index 0000000000..0d183ce834
--- /dev/null
+++ b/backends/platform/ios7/ios7_osys_video.mm
@@ -0,0 +1,545 @@
+/* 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.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "ios7_osys_main.h"
+#include "ios7_video.h"
+
+#include "graphics/conversion.h"
+#import "iOS7AppDelegate.h"
+
+@interface iOS7AlertHandler : NSObject<UIAlertViewDelegate>
+@end
+
+@implementation iOS7AlertHandler
+
+- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex {
+	OSystem_iOS7::sharedInstance()->quit();
+	exit(1);
+}
+
+@end
+
+static void displayAlert(void *ctx) {
+	UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Fatal Error"
+	                                                message:[NSString stringWithCString:(const char *)ctx encoding:NSUTF8StringEncoding]
+	                                               delegate:[[iOS7AlertHandler alloc] init]
+	                                      cancelButtonTitle:@"OK"
+	                                      otherButtonTitles:nil];
+	[alert show];
+	[alert autorelease];
+}
+
+void OSystem_iOS7::fatalError() {
+	if (_lastErrorMessage) {
+		dispatch_async_f(dispatch_get_main_queue(), _lastErrorMessage, displayAlert);
+		for(;;);
+	}
+	else {
+		OSystem::fatalError();
+	}
+}
+
+void OSystem_iOS7::initVideoContext() {
+	_videoContext = [[iOS7AppDelegate iPhoneView] getVideoContext];
+}
+
+const OSystem::GraphicsMode *OSystem_iOS7::getSupportedGraphicsModes() const {
+	return s_supportedGraphicsModes;
+}
+
+int OSystem_iOS7::getDefaultGraphicsMode() const {
+	return kGraphicsModeNone;
+}
+
+bool OSystem_iOS7::setGraphicsMode(int mode) {
+	switch (mode) {
+	case kGraphicsModeNone:
+	case kGraphicsModeLinear:
+	case kGraphicsMode2xSaI:
+	case kGraphicsModeSuper2xSaI:
+	case kGraphicsModeSuperEagle:
+	case kGraphicsModeAdvMame2x:
+	case kGraphicsModeAdvMame3x:
+	case kGraphicsModeHQ2x:
+	case kGraphicsModeHQ3x:
+	case kGraphicsModeTV2x:
+	case kGraphicsModeDotMatrix:
+		_videoContext->graphicsMode = (GraphicsModes)mode;
+		return true;
+
+	default:
+		return false;
+	}
+}
+
+int OSystem_iOS7::getGraphicsMode() const {
+	return _videoContext->graphicsMode;
+}
+
+#ifdef USE_RGB_COLOR
+Common::List<Graphics::PixelFormat> OSystem_iOS7::getSupportedFormats() const {
+	Common::List<Graphics::PixelFormat> list;
+	// RGB565
+	list.push_back(Graphics::createPixelFormat<565>());
+	// CLUT8
+	list.push_back(Graphics::PixelFormat::createFormatCLUT8());
+	return list;
+}
+#endif
+
+void OSystem_iOS7::initSize(uint width, uint height, const Graphics::PixelFormat *format) {
+	//printf("initSize(%u, %u, %p)\n", width, height, (const void *)format);
+
+	_videoContext->screenWidth = width;
+	_videoContext->screenHeight = height;
+	_videoContext->shakeOffsetY = 0;
+
+	// In case we use the screen texture as frame buffer we reset the pixels
+	// pointer here to avoid freeing the screen texture.
+	if (_framebuffer.getPixels() == _videoContext->screenTexture.getPixels())
+		_framebuffer.setPixels(0);
+
+	// Create the screen texture right here. We need to do this here, since
+	// when a game requests hi-color mode, we actually set the framebuffer
+	// to the texture buffer to avoid an additional copy step.
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(createScreenTexture) withObject:nil waitUntilDone: YES];
+
+	// In case the client code tries to set up a non supported mode, we will
+	// fall back to CLUT8 and set the transaction error accordingly.
+	if (format && format->bytesPerPixel != 1 && *format != _videoContext->screenTexture.format) {
+		format = 0;
+		_gfxTransactionError = kTransactionFormatNotSupported;
+	}
+
+	if (!format || format->bytesPerPixel == 1) {
+		_framebuffer.create(width, height, Graphics::PixelFormat::createFormatCLUT8());
+	} else {
+#if 0
+		printf("bytesPerPixel: %u RGBAlosses: %u,%u,%u,%u RGBAshifts: %u,%u,%u,%u\n", format->bytesPerPixel,
+		       format->rLoss, format->gLoss, format->bLoss, format->aLoss,
+		       format->rShift, format->gShift, format->bShift, format->aShift);
+#endif
+		// We directly draw on the screen texture in hi-color mode. Thus
+		// we copy over its settings here and just replace the width and
+		// height to avoid any problems.
+		_framebuffer = _videoContext->screenTexture;
+		_framebuffer.w = width;
+		_framebuffer.h = height;
+	}
+
+	_fullScreenIsDirty = false;
+	dirtyFullScreen();
+	_mouseCursorPaletteEnabled = false;
+}
+
+void OSystem_iOS7::beginGFXTransaction() {
+	_gfxTransactionError = kTransactionSuccess;
+}
+
+OSystem::TransactionError OSystem_iOS7::endGFXTransaction() {
+	_screenChangeCount++;
+	updateOutputSurface();
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(setGraphicsMode) withObject:nil waitUntilDone: YES];
+
+	return _gfxTransactionError;
+}
+
+void OSystem_iOS7::updateOutputSurface() {
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(initSurface) withObject:nil waitUntilDone: YES];
+}
+
+int16 OSystem_iOS7::getHeight() {
+	return _videoContext->screenHeight;
+}
+
+int16 OSystem_iOS7::getWidth() {
+	return _videoContext->screenWidth;
+}
+
+void OSystem_iOS7::setPalette(const byte *colors, uint start, uint num) {
+	//printf("setPalette(%p, %u, %u)\n", colors, start, num);
+	assert(start + num <= 256);
+	const byte *b = colors;
+
+	for (uint i = start; i < start + num; ++i) {
+		_gamePalette[i] = Graphics::RGBToColor<Graphics::ColorMasks<565> >(b[0], b[1], b[2]);
+		_gamePaletteRGBA5551[i] = Graphics::RGBToColor<Graphics::ColorMasks<5551> >(b[0], b[1], b[2]);
+		b += 3;
+	}
+
+	dirtyFullScreen();
+
+	// Automatically update the mouse texture when the palette changes while the
+	// cursor palette is disabled.
+	if (!_mouseCursorPaletteEnabled && _mouseBuffer.format.bytesPerPixel == 1)
+		_mouseDirty = _mouseNeedTextureUpdate = true;
+}
+
+void OSystem_iOS7::grabPalette(byte *colors, uint start, uint num) {
+	//printf("grabPalette(%p, %u, %u)\n", colors, start, num);
+	assert(start + num <= 256);
+	byte *b = colors;
+
+	for (uint i = start; i < start + num; ++i) {
+		Graphics::colorToRGB<Graphics::ColorMasks<565> >(_gamePalette[i], b[0], b[1], b[2]);
+		b += 3;
+	}
+}
+
+void OSystem_iOS7::copyRectToScreen(const void *buf, int pitch, int x, int y, int w, int h) {
+	//printf("copyRectToScreen(%p, %d, %i, %i, %i, %i)\n", buf, pitch, x, y, w, h);
+	//Clip the coordinates
+	const byte *src = (const byte *)buf;
+	if (x < 0) {
+		w += x;
+		src -= x;
+		x = 0;
+	}
+
+	if (y < 0) {
+		h += y;
+		src -= y * pitch;
+		y = 0;
+	}
+
+	if (w > (int)_framebuffer.w - x) {
+		w = _framebuffer.w - x;
+	}
+
+	if (h > (int)_framebuffer.h - y) {
+		h = _framebuffer.h - y;
+	}
+
+	if (w <= 0 || h <= 0)
+		return;
+
+	if (!_fullScreenIsDirty) {
+		_dirtyRects.push_back(Common::Rect(x, y, x + w, y + h));
+	}
+
+	byte *dst = (byte *)_framebuffer.getBasePtr(x, y);
+	if (_framebuffer.pitch == pitch && _framebuffer.w == w) {
+		memcpy(dst, src, h * pitch);
+	} else {
+		do {
+			memcpy(dst, src, w * _framebuffer.format.bytesPerPixel);
+			src += pitch;
+			dst += _framebuffer.pitch;
+		} while (--h);
+	}
+}
+
+void OSystem_iOS7::updateScreen() {
+	if (_dirtyRects.size() == 0 && _dirtyOverlayRects.size() == 0 && !_mouseDirty)
+		return;
+
+	//printf("updateScreen(): %i dirty rects.\n", _dirtyRects.size());
+
+	internUpdateScreen();
+	_mouseDirty = false;
+	_fullScreenIsDirty = false;
+	_fullScreenOverlayIsDirty = false;
+
+	iOS7_updateScreen();
+}
+
+void OSystem_iOS7::internUpdateScreen() {
+	if (_mouseNeedTextureUpdate) {
+		updateMouseTexture();
+		_mouseNeedTextureUpdate = false;
+	}
+
+	while (_dirtyRects.size()) {
+		Common::Rect dirtyRect = _dirtyRects.remove_at(_dirtyRects.size() - 1);
+
+		//printf("Drawing: (%i, %i) -> (%i, %i)\n", dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom);
+		drawDirtyRect(dirtyRect);
+		// TODO: Implement dirty rect code
+		//updateHardwareSurfaceForRect(dirtyRect);
+	}
+
+	if (_videoContext->overlayVisible) {
+		// TODO: Implement dirty rect code
+		_dirtyOverlayRects.clear();
+		/*while (_dirtyOverlayRects.size()) {
+			Common::Rect dirtyRect = _dirtyOverlayRects.remove_at(_dirtyOverlayRects.size() - 1);
+
+			//printf("Drawing: (%i, %i) -> (%i, %i)\n", dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom);
+			drawDirtyOverlayRect(dirtyRect);
+		}*/
+	}
+}
+
+void OSystem_iOS7::drawDirtyRect(const Common::Rect &dirtyRect) {
+	// We only need to do a color look up for CLUT8
+	if (_framebuffer.format.bytesPerPixel != 1)
+		return;
+
+	int h = dirtyRect.bottom - dirtyRect.top;
+	int w = dirtyRect.right - dirtyRect.left;
+
+	const byte *src = (const byte *)_framebuffer.getBasePtr(dirtyRect.left, dirtyRect.top);
+	byte *dstRaw = (byte *)_videoContext->screenTexture.getBasePtr(dirtyRect.left, dirtyRect.top);
+
+	// When we use CLUT8 do a color look up
+	for (int y = h; y > 0; y--) {
+		uint16 *dst = (uint16 *)dstRaw;
+		for (int x = w; x > 0; x--)
+			*dst++ = _gamePalette[*src++];
+
+		dstRaw += _videoContext->screenTexture.pitch;
+		src += _framebuffer.pitch - w;
+	}
+}
+
+Graphics::Surface *OSystem_iOS7::lockScreen() {
+	//printf("lockScreen()\n");
+	return &_framebuffer;
+}
+
+void OSystem_iOS7::unlockScreen() {
+	//printf("unlockScreen()\n");
+	dirtyFullScreen();
+}
+
+void OSystem_iOS7::setShakePos(int shakeOffset) {
+	//printf("setShakePos(%i)\n", shakeOffset);
+	_videoContext->shakeOffsetY = shakeOffset;
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(setViewTransformation) withObject:nil waitUntilDone: YES];
+	// HACK: We use this to force a redraw.
+	_mouseDirty = true;
+}
+
+void OSystem_iOS7::showOverlay() {
+	//printf("showOverlay()\n");
+	_videoContext->overlayVisible = true;
+	dirtyFullOverlayScreen();
+	updateScreen();
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(updateMouseCursorScaling) withObject:nil waitUntilDone: YES];
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(clearColorBuffer) withObject:nil waitUntilDone: YES];
+}
+
+void OSystem_iOS7::hideOverlay() {
+	//printf("hideOverlay()\n");
+	_videoContext->overlayVisible = false;
+	_dirtyOverlayRects.clear();
+	dirtyFullScreen();
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(updateMouseCursorScaling) withObject:nil waitUntilDone: YES];
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(clearColorBuffer) withObject:nil waitUntilDone: YES];
+}
+
+void OSystem_iOS7::clearOverlay() {
+	//printf("clearOverlay()\n");
+	bzero(_videoContext->overlayTexture.getPixels(), _videoContext->overlayTexture.h * _videoContext->overlayTexture.pitch);
+	dirtyFullOverlayScreen();
+}
+
+void OSystem_iOS7::grabOverlay(void *buf, int pitch) {
+	//printf("grabOverlay()\n");
+	int h = _videoContext->overlayHeight;
+
+	byte *dst = (byte *)buf;
+	const byte *src = (const byte *)_videoContext->overlayTexture.getPixels();
+	do {
+		memcpy(dst, src, _videoContext->overlayWidth * sizeof(uint16));
+		src += _videoContext->overlayTexture.pitch;
+		dst += pitch;
+	} while (--h);
+}
+
+void OSystem_iOS7::copyRectToOverlay(const void *buf, int pitch, int x, int y, int w, int h) {
+	//printf("copyRectToOverlay(%p, pitch=%i, x=%i, y=%i, w=%i, h=%i)\n", (const void *)buf, pitch, x, y, w, h);
+	const byte *src = (const byte *)buf;
+
+	//Clip the coordinates
+	if (x < 0) {
+		w += x;
+		src -= x * sizeof(uint16);
+		x = 0;
+	}
+
+	if (y < 0) {
+		h += y;
+		src -= y * pitch;
+		y = 0;
+	}
+
+	if (w > (int)_videoContext->overlayWidth - x)
+		w = _videoContext->overlayWidth - x;
+
+	if (h > (int)_videoContext->overlayHeight - y)
+		h = _videoContext->overlayHeight - y;
+
+	if (w <= 0 || h <= 0)
+		return;
+
+	if (!_fullScreenOverlayIsDirty) {
+		_dirtyOverlayRects.push_back(Common::Rect(x, y, x + w, y + h));
+	}
+
+	byte *dst = (byte *)_videoContext->overlayTexture.getBasePtr(x, y);
+	do {
+		memcpy(dst, src, w * sizeof(uint16));
+		src += pitch;
+		dst += _videoContext->overlayTexture.pitch;
+	} while (--h);
+}
+
+int16 OSystem_iOS7::getOverlayHeight() {
+	return _videoContext->overlayHeight;
+}
+
+int16 OSystem_iOS7::getOverlayWidth() {
+	return _videoContext->overlayWidth;
+}
+
+bool OSystem_iOS7::showMouse(bool visible) {
+	//printf("showMouse(%d)\n", visible);
+	bool last = _videoContext->mouseIsVisible;
+	_videoContext->mouseIsVisible = visible;
+	_mouseDirty = true;
+
+	return last;
+}
+
+void OSystem_iOS7::warpMouse(int x, int y) {
+	//printf("warpMouse(%d, %d)\n", x, y);
+	_videoContext->mouseX = x;
+	_videoContext->mouseY = y;
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(notifyMouseMove) withObject:nil waitUntilDone: YES];
+	_mouseDirty = true;
+}
+
+void OSystem_iOS7::dirtyFullScreen() {
+	if (!_fullScreenIsDirty) {
+		_dirtyRects.clear();
+		_dirtyRects.push_back(Common::Rect(0, 0, _videoContext->screenWidth, _videoContext->screenHeight));
+		_fullScreenIsDirty = true;
+	}
+}
+
+void OSystem_iOS7::dirtyFullOverlayScreen() {
+	if (!_fullScreenOverlayIsDirty) {
+		_dirtyOverlayRects.clear();
+		_dirtyOverlayRects.push_back(Common::Rect(0, 0, _videoContext->overlayWidth, _videoContext->overlayHeight));
+		_fullScreenOverlayIsDirty = true;
+	}
+}
+
+void OSystem_iOS7::setMouseCursor(const void *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale, const Graphics::PixelFormat *format) {
+	//printf("setMouseCursor(%p, %u, %u, %i, %i, %u, %d, %p)\n", (const void *)buf, w, h, hotspotX, hotspotY, keycolor, dontScale, (const void *)format);
+
+	const Graphics::PixelFormat pixelFormat = format ? *format : Graphics::PixelFormat::createFormatCLUT8();
+#if 0
+	printf("bytesPerPixel: %u RGBAlosses: %u,%u,%u,%u RGBAshifts: %u,%u,%u,%u\n", pixelFormat.bytesPerPixel,
+	       pixelFormat.rLoss, pixelFormat.gLoss, pixelFormat.bLoss, pixelFormat.aLoss,
+	       pixelFormat.rShift, pixelFormat.gShift, pixelFormat.bShift, pixelFormat.aShift);
+#endif
+	assert(pixelFormat.bytesPerPixel == 1 || pixelFormat.bytesPerPixel == 2);
+
+	if (_mouseBuffer.w != w || _mouseBuffer.h != h || _mouseBuffer.format != pixelFormat || !_mouseBuffer.getPixels())
+		_mouseBuffer.create(w, h, pixelFormat);
+
+	_videoContext->mouseWidth = w;
+	_videoContext->mouseHeight = h;
+
+	_videoContext->mouseHotspotX = hotspotX;
+	_videoContext->mouseHotspotY = hotspotY;
+
+	_mouseKeyColor = keycolor;
+
+	memcpy(_mouseBuffer.getPixels(), buf, h * _mouseBuffer.pitch);
+
+	_mouseDirty = true;
+	_mouseNeedTextureUpdate = true;
+}
+
+void OSystem_iOS7::setCursorPalette(const byte *colors, uint start, uint num) {
+	//printf("setCursorPalette(%p, %u, %u)\n", (const void *)colors, start, num);
+	assert(start + num <= 256);
+
+	for (uint i = start; i < start + num; ++i, colors += 3)
+		_mouseCursorPalette[i] = Graphics::RGBToColor<Graphics::ColorMasks<5551> >(colors[0], colors[1], colors[2]);
+
+	// FIXME: This is just stupid, our client code seems to assume that this
+	// automatically enables the cursor palette.
+	_mouseCursorPaletteEnabled = true;
+
+	if (_mouseCursorPaletteEnabled)
+		_mouseDirty = _mouseNeedTextureUpdate = true;
+}
+
+void OSystem_iOS7::updateMouseTexture() {
+	uint texWidth = getSizeNextPOT(_videoContext->mouseWidth);
+	uint texHeight = getSizeNextPOT(_videoContext->mouseHeight);
+
+	Graphics::Surface &mouseTexture = _videoContext->mouseTexture;
+	if (mouseTexture.w != texWidth || mouseTexture.h != texHeight)
+		mouseTexture.create(texWidth, texHeight, Graphics::createPixelFormat<5551>());
+
+	if (_mouseBuffer.format.bytesPerPixel == 1) {
+		const uint16 *palette;
+		if (_mouseCursorPaletteEnabled)
+			palette = _mouseCursorPalette;
+		else
+			palette = _gamePaletteRGBA5551;
+
+		uint16 *mouseBuf = (uint16 *)mouseTexture.getPixels();
+		for (uint x = 0; x < _videoContext->mouseWidth; ++x) {
+			for (uint y = 0; y < _videoContext->mouseHeight; ++y) {
+				const byte color = *(const byte *)_mouseBuffer.getBasePtr(x, y);
+				if (color != _mouseKeyColor)
+					mouseBuf[y * texWidth + x] = palette[color] | 0x1;
+				else
+					mouseBuf[y * texWidth + x] = 0x0;
+			}
+		}
+	} else {
+		if (crossBlit((byte *)mouseTexture.getPixels(), (const byte *)_mouseBuffer.getPixels(), mouseTexture.pitch,
+			          _mouseBuffer.pitch, _mouseBuffer.w, _mouseBuffer.h, mouseTexture.format, _mouseBuffer.format)) {
+			if (!_mouseBuffer.format.aBits()) {
+				// Apply color keying since the original cursor had no alpha channel.
+				const uint16 *src = (const uint16 *)_mouseBuffer.getPixels();
+				uint8 *dstRaw = (uint8 *)mouseTexture.getPixels();
+
+				for (uint y = 0; y < _mouseBuffer.h; ++y, dstRaw += mouseTexture.pitch) {
+					uint16 *dst = (uint16 *)dstRaw;
+					for (uint x = 0; x < _mouseBuffer.w; ++x, ++dst) {
+						if (*src++ == _mouseKeyColor)
+							*dst &= ~1;
+						else
+							*dst |= 1;
+					}
+				}
+			}
+		} else {
+			// TODO: Log this!
+			// Make the cursor all transparent... we really need a better fallback ;-).
+			memset(mouseTexture.getPixels(), 0, mouseTexture.h * mouseTexture.pitch);
+		}
+	}
+
+	[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(updateMouseCursor) withObject:nil waitUntilDone: YES];
+}
diff --git a/backends/platform/ios7/ios7_video.h b/backends/platform/ios7/ios7_video.h
new file mode 100644
index 0000000000..799cd21a94
--- /dev/null
+++ b/backends/platform/ios7/ios7_video.h
@@ -0,0 +1,129 @@
+/* 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 BACKENDS_PLATFORM_IPHONE_IPHONE_VIDEO_H
+#define BACKENDS_PLATFORM_IPHONE_IPHONE_VIDEO_H
+
+#include <UIKit/UIKit.h>
+#include <Foundation/Foundation.h>
+#include <QuartzCore/QuartzCore.h>
+
+#include <OpenGLES/EAGL.h>
+#include <OpenGLES/ES2/gl.h>
+#include <OpenGLES/ES2/glext.h>
+
+#include "ios7_keyboard.h"
+#include "ios7_common.h"
+
+#include "common/list.h"
+#import "graphics/scaler.h"
+
+typedef struct {
+	GLfloat x, y;
+	GLfloat u,v;
+} GLVertex;
+
+@interface iPhoneView : UIView {
+	VideoContext _videoContext;
+
+	Common::List<InternalEvent> _events;
+	NSLock *_eventLock;
+	SoftKeyboard *_keyboardView;
+
+	EAGLContext *_context;
+	GLuint _viewRenderbuffer;
+	GLuint _viewFramebuffer;
+	GLuint _screenTexture;
+	GLuint _overlayTexture;
+	GLuint _mouseCursorTexture;
+
+	GLuint _vertexShader;
+	GLuint _fragmentShader;
+
+	GLuint _vertexBuffer;
+
+	GLuint _screenSizeSlot;
+	GLuint _textureSlot;
+	GLuint _shakeSlot;
+
+	GLuint _positionSlot;
+	GLuint _textureCoordSlot;
+
+	GLint _renderBufferWidth;
+	GLint _renderBufferHeight;
+
+	GLVertex _gameScreenCoords[4];
+	CGRect _gameScreenRect;
+
+	GLVertex _overlayCoords[4];
+	CGRect _overlayRect;
+
+	GLVertex _mouseCoords[4];
+
+	GLint _mouseHotspotX, _mouseHotspotY;
+	GLint _mouseWidth, _mouseHeight;
+	GLfloat _mouseScaleX, _mouseScaleY;
+
+	int _scaledShakeOffsetY;
+
+	UITouch *_firstTouch;
+	UITouch *_secondTouch;
+
+	uint8_t *_scalerMemorySrc;
+	uint8_t *_scalerMemoryDst;
+	size_t _scalerMemorySrcSize;
+	size_t _scalerMemoryDstSize;
+	int _scalerScale;
+	ScalerProc *_scaler;
+}
+
+- (id)initWithFrame:(struct CGRect)frame;
+
+- (VideoContext *)getVideoContext;
+
+- (void)createScreenTexture;
+- (void)initSurface;
+- (void)setViewTransformation;
+
+- (void)setGraphicsMode;
+
+- (void)updateSurface;
+- (void)updateMainSurface;
+- (void)updateOverlaySurface;
+- (void)updateMouseSurface;
+- (void)clearColorBuffer;
+
+- (void)notifyMouseMove;
+- (void)updateMouseCursorScaling;
+- (void)updateMouseCursor;
+
+- (void)deviceOrientationChanged:(UIDeviceOrientation)orientation;
+
+- (void)applicationSuspend;
+
+- (void)applicationResume;
+
+- (bool)fetchEvent:(InternalEvent *)event;
+
+@end
+
+#endif
diff --git a/backends/platform/ios7/ios7_video.mm b/backends/platform/ios7/ios7_video.mm
new file mode 100644
index 0000000000..e3c3edf06b
--- /dev/null
+++ b/backends/platform/ios7/ios7_video.mm
@@ -0,0 +1,996 @@
+/* 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.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "ios7_video.h"
+
+#include "graphics/colormasks.h"
+#include "common/system.h"
+#import "iOS7AppDelegate.h"
+
+static int g_fullWidth;
+static int g_fullHeight;
+
+static int g_needsScreenUpdate = 0;
+
+#if 0
+static long g_lastTick = 0;
+static int g_frames = 0;
+#endif
+
+#define printOpenGLError() printOglError(__FILE__, __LINE__)
+
+int printOglError(const char *file, int line) {
+	int retCode = 0;
+
+	// returns 1 if an OpenGL error occurred, 0 otherwise.
+	GLenum glErr = glGetError();
+	while (glErr != GL_NO_ERROR) {
+		fprintf(stderr, "glError: %u (%s: %d)\n", glErr, file, line);
+		retCode = 1;
+		glErr = glGetError();
+	}
+	return retCode;
+}
+
+bool iOS7_isBigDevice() {
+	return UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad;
+}
+
+void iOS7_updateScreen() {
+	//printf("Mouse: (%i, %i)\n", mouseX, mouseY);
+	if (!g_needsScreenUpdate) {
+		g_needsScreenUpdate = 1;
+		[[iOS7AppDelegate iPhoneView] performSelectorOnMainThread:@selector(updateSurface) withObject:nil waitUntilDone: NO];
+	}
+}
+
+bool iOS7_fetchEvent(InternalEvent *event) {
+	return [[iOS7AppDelegate iPhoneView] fetchEvent:event];
+}
+
+uint getSizeNextPOT(uint size) {
+	if ((size & (size - 1)) || !size) {
+		int log = 0;
+
+		while (size >>= 1)
+			++log;
+
+		size = (2 << log);
+	}
+
+	return size;
+}
+
+@implementation iPhoneView
+
++ (Class)layerClass {
+	return [CAEAGLLayer class];
+}
+
+- (VideoContext *)getVideoContext {
+	return &_videoContext;
+}
+
+- (void)createContext {
+	CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;
+
+	eaglLayer.opaque = YES;
+	eaglLayer.drawableProperties = @{
+	                                 kEAGLDrawablePropertyRetainedBacking: @NO,
+	                                 kEAGLDrawablePropertyColorFormat: kEAGLColorFormatRGB565
+	                                };
+
+	_context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
+
+	// In case creating the OpenGL ES context failed, we will error out here.
+	if (_context == nil) {
+		fprintf(stderr, "Could not create OpenGL ES context\n");
+		exit(-1);
+	}
+
+	if ([EAGLContext setCurrentContext:_context]) {
+		// glEnableClientState(GL_TEXTURE_COORD_ARRAY); printOpenGLError();
+		// glEnableClientState(GL_VERTEX_ARRAY); printOpenGLError();
+		[self setupOpenGL];
+	}
+}
+
+- (void)setupOpenGL {
+	[self setupFramebuffer];
+	[self createOverlaySurface];
+	[self compileShaders];
+	[self setupVBOs];
+	[self setupTextures];
+
+	[self finishGLSetup];
+}
+
+- (void)finishGLSetup {
+	glViewport(0, 0, _renderBufferWidth, _renderBufferHeight); printOpenGLError();
+	glClearColor(0.0f, 0.0f, 0.0f, 1.0f); printOpenGLError();
+
+	glUniform2f(_screenSizeSlot, _renderBufferWidth, _renderBufferHeight);
+
+	glEnable(GL_BLEND);
+	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+}
+
+- (void)freeOpenGL {
+	[self deleteTextures];
+	[self deleteVBOs];
+	[self deleteShaders];
+	[self deleteFramebuffer];
+}
+
+- (void)rebuildFrameBuffer {
+	[self deleteFramebuffer];
+	[self setupFramebuffer];
+	[self finishGLSetup];
+}
+
+- (void)setupFramebuffer {
+	glGenRenderbuffers(1, &_viewRenderbuffer);
+	printOpenGLError();
+	glBindRenderbuffer(GL_RENDERBUFFER, _viewRenderbuffer);
+	printOpenGLError();
+	[_context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(id <EAGLDrawable>) self.layer];
+
+	glGenFramebuffers(1, &_viewFramebuffer);
+	printOpenGLError();
+	glBindFramebuffer(GL_FRAMEBUFFER, _viewFramebuffer);
+	printOpenGLError();
+	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, _viewRenderbuffer);
+	printOpenGLError();
+
+	// Retrieve the render buffer size. This *should* match the frame size,
+	// i.e. g_fullWidth and g_fullHeight.
+	glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &_renderBufferWidth);
+	printOpenGLError();
+	glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &_renderBufferHeight);
+	printOpenGLError();
+
+	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+		NSLog(@"Failed to make complete framebuffer object %x.", glCheckFramebufferStatus(GL_FRAMEBUFFER));
+		return;
+	}
+}
+
+- (void)createOverlaySurface {
+	uint overlayWidth = (uint) MAX(_renderBufferWidth, _renderBufferHeight);
+	uint overlayHeight = (uint) MIN(_renderBufferWidth, _renderBufferHeight);
+
+	if (iOS7_isBigDevice()) {
+		// On really big displays, like the iPad Pro, we scale the interface down
+		// so that the controls are not too small..
+		while (overlayHeight > 1024) {
+			overlayWidth /= 2;
+			overlayHeight /= 2;
+		}
+	}
+	else {
+		// On small devices, we force the user interface to use the small theme
+		while (overlayHeight > 480) {
+			overlayWidth /= 2;
+			overlayHeight /= 2;
+		}
+	}
+
+	_videoContext.overlayWidth = overlayWidth;
+	_videoContext.overlayHeight = overlayHeight;
+
+	uint overlayTextureWidthPOT  = getSizeNextPOT(overlayWidth);
+	uint overlayTextureHeightPOT = getSizeNextPOT(overlayHeight);
+
+	// Since the overlay size won't change the whole run, we can
+	// precalculate the texture coordinates for the overlay texture here
+	// and just use it later on.
+	GLfloat u = _videoContext.overlayWidth / (GLfloat) overlayTextureWidthPOT;
+	GLfloat v = _videoContext.overlayHeight / (GLfloat) overlayTextureHeightPOT;
+	_overlayCoords[0].x = 0; _overlayCoords[0].y = 0; _overlayCoords[0].u = 0; _overlayCoords[0].v = 0;
+	_overlayCoords[1].x = 0; _overlayCoords[1].y = 0; _overlayCoords[1].u = u; _overlayCoords[1].v = 0;
+	_overlayCoords[2].x = 0; _overlayCoords[2].y = 0; _overlayCoords[2].u = 0; _overlayCoords[2].v = v;
+	_overlayCoords[3].x = 0; _overlayCoords[3].y = 0; _overlayCoords[3].u = u; _overlayCoords[3].v = v;
+
+	_videoContext.overlayTexture.create((uint16) overlayTextureWidthPOT, (uint16) overlayTextureHeightPOT, Graphics::createPixelFormat<5551>());
+}
+
+- (void)deleteFramebuffer {
+	glDeleteRenderbuffers(1, &_viewRenderbuffer);
+	glDeleteFramebuffers(1, &_viewFramebuffer);
+}
+
+- (void)setupVBOs {
+	glGenBuffers(1, &_vertexBuffer);
+	glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer);
+}
+
+- (void)deleteVBOs {
+	glDeleteBuffers(1, &_vertexBuffer);
+}
+
+- (GLuint)compileShader:(const char*)shaderPrg withType:(GLenum)shaderType {
+	GLuint shaderHandle = glCreateShader(shaderType);
+
+	int shaderPrgLength = strlen(shaderPrg);
+	glShaderSource(shaderHandle, 1, &shaderPrg, &shaderPrgLength);
+
+	glCompileShader(shaderHandle);
+
+	GLint compileSuccess;
+	glGetShaderiv(shaderHandle, GL_COMPILE_STATUS, &compileSuccess);
+	if (compileSuccess == GL_FALSE) {
+		GLchar messages[256];
+		glGetShaderInfoLog(shaderHandle, sizeof(messages), 0, &messages[0]);
+		NSString *messageString = [NSString stringWithUTF8String:messages];
+		NSLog(@"%@", messageString);
+		exit(1);
+	}
+
+	return shaderHandle;
+}
+
+- (void)compileShaders {
+	const char *vertexPrg =
+			"uniform vec2 ScreenSize;"
+			"uniform float Shake;"
+			""
+			"attribute vec2 Position;"
+			"attribute vec2 TexCoord;"
+			""
+			"varying vec4 DestColor;"
+			"varying vec2 o_TexCoord;"
+			""
+			"void main(void) {"
+			"	DestColor = vec4(Position.x, Position.y, 0, 1);"
+			"	o_TexCoord = TexCoord;"
+			"	gl_Position = vec4((Position.x / ScreenSize.x) * 2.0 - 1.0, (1.0 - (Position.y + Shake) / ScreenSize.y) * 2.0 - 1.0, 0, 1);"
+			"}";
+
+	const char *fragmentPrg =
+			"uniform sampler2D Texture;"
+			""
+			"varying lowp vec4 DestColor;"
+			"varying lowp vec2 o_TexCoord;"
+			""
+			"void main(void) {"
+			"	gl_FragColor = texture2D(Texture, o_TexCoord);"
+			"}";
+
+	_vertexShader = [self compileShader:vertexPrg withType:GL_VERTEX_SHADER];
+	_fragmentShader = [self compileShader:fragmentPrg withType:GL_FRAGMENT_SHADER];
+
+	GLuint programHandle = glCreateProgram();
+	glAttachShader(programHandle, _vertexShader);
+	glAttachShader(programHandle, _fragmentShader);
+	glLinkProgram(programHandle);
+
+	GLint linkSuccess;
+	glGetProgramiv(programHandle, GL_LINK_STATUS, &linkSuccess);
+	if (linkSuccess == GL_FALSE) {
+		printOpenGLError();
+		exit(1);
+	}
+
+	glUseProgram(programHandle);
+
+	_screenSizeSlot = (GLuint) glGetUniformLocation(programHandle, "ScreenSize");
+	_textureSlot = (GLuint) glGetUniformLocation(programHandle, "Texture");
+	_shakeSlot = (GLuint) glGetUniformLocation(programHandle, "Shake");
+
+	_positionSlot = (GLuint) glGetAttribLocation(programHandle, "Position");
+	_textureCoordSlot = (GLuint) glGetAttribLocation(programHandle, "TexCoord");
+
+	glEnableVertexAttribArray(_positionSlot);
+	glEnableVertexAttribArray(_textureCoordSlot);
+
+	glUniform1i(_textureSlot, 0); printOpenGLError();
+}
+
+- (void)deleteShaders {
+	glDeleteShader(_vertexShader);
+	glDeleteShader(_fragmentShader);
+}
+
+- (void)setupTextures {
+	glGenTextures(1, &_screenTexture); printOpenGLError();
+	glGenTextures(1, &_overlayTexture); printOpenGLError();
+	glGenTextures(1, &_mouseCursorTexture); printOpenGLError();
+
+	[self setGraphicsMode];
+}
+
+- (void)deleteTextures {
+	if (_screenTexture) {
+		glDeleteTextures(1, &_screenTexture); printOpenGLError();
+		_screenTexture = 0;
+	}
+	if (_overlayTexture) {
+		glDeleteTextures(1, &_overlayTexture); printOpenGLError();
+		_overlayTexture = 0;
+	}
+	if (_mouseCursorTexture) {
+		glDeleteTextures(1, &_mouseCursorTexture); printOpenGLError();
+		_mouseCursorTexture = 0;
+	}
+}
+
+- (void)setupGestureRecognizers {
+	UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(twoFingersSwipeRight:)];
+	swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
+	swipeRight.numberOfTouchesRequired = 2;
+	swipeRight.delaysTouchesBegan = NO;
+	swipeRight.delaysTouchesEnded = NO;
+
+	UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(twoFingersSwipeLeft:)];
+	swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
+	swipeLeft.numberOfTouchesRequired = 2;
+	swipeLeft.delaysTouchesBegan = NO;
+	swipeLeft.delaysTouchesEnded = NO;
+
+	UISwipeGestureRecognizer *swipeUp = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(twoFingersSwipeUp:)];
+	swipeUp.direction = UISwipeGestureRecognizerDirectionUp;
+	swipeUp.numberOfTouchesRequired = 2;
+	swipeUp.delaysTouchesBegan = NO;
+	swipeUp.delaysTouchesEnded = NO;
+
+	UISwipeGestureRecognizer *swipeDown = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(twoFingersSwipeDown:)];
+	swipeDown.direction = UISwipeGestureRecognizerDirectionDown;
+	swipeDown.numberOfTouchesRequired = 2;
+	swipeDown.delaysTouchesBegan = NO;
+	swipeDown.delaysTouchesEnded = NO;
+
+	UITapGestureRecognizer *doubleTapTwoFingers = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(twoFingersDoubleTap:)];
+	doubleTapTwoFingers.numberOfTapsRequired = 2;
+	doubleTapTwoFingers.numberOfTouchesRequired = 2;
+	doubleTapTwoFingers.delaysTouchesBegan = NO;
+	doubleTapTwoFingers.delaysTouchesEnded = NO;
+
+	[self addGestureRecognizer:swipeRight];
+	[self addGestureRecognizer:swipeLeft];
+	[self addGestureRecognizer:swipeUp];
+	[self addGestureRecognizer:swipeDown];
+	[self addGestureRecognizer:doubleTapTwoFingers];
+
+	[swipeRight release];
+	[swipeLeft release];
+	[swipeUp release];
+	[swipeDown release];
+	[doubleTapTwoFingers release];
+}
+
+- (id)initWithFrame:(struct CGRect)frame {
+	self = [super initWithFrame: frame];
+
+#if defined(USE_SCALERS) || defined(USE_HQ_SCALERS)
+	InitScalers(565);
+#endif
+
+	[self setupGestureRecognizers];
+
+	g_fullWidth = (int)MAX(frame.size.width, frame.size.height);
+	g_fullHeight = (int)MIN(frame.size.width, frame.size.height);
+
+	[self setContentScaleFactor:[[UIScreen mainScreen] scale]];
+
+	_scalerMemorySrc = NULL;
+	_scalerMemoryDst = NULL;
+	_scalerMemorySrcSize = 0;
+	_scalerMemoryDstSize = 0;
+	_scaler = NULL;
+	_scalerScale = 1;
+
+	_keyboardView = nil;
+	_screenTexture = 0;
+	_overlayTexture = 0;
+	_mouseCursorTexture = 0;
+
+	_scaledShakeOffsetY = 0;
+
+	_firstTouch = NULL;
+	_secondTouch = NULL;
+
+	_eventLock = [[NSLock alloc] init];
+
+	memset(_gameScreenCoords, 0, sizeof(GLVertex) * 4);
+	memset(_overlayCoords, 0, sizeof(GLVertex) * 4);
+	memset(_mouseCoords, 0, sizeof(GLVertex) * 4);
+
+	// Initialize the OpenGL ES context
+	[self createContext];
+
+	return self;
+}
+
+- (void)dealloc {
+	[_keyboardView release];
+
+	_videoContext.screenTexture.free();
+	_videoContext.overlayTexture.free();
+	_videoContext.mouseTexture.free();
+
+	free(_scalerMemorySrc);
+	free(_scalerMemoryDst);
+
+	[_eventLock release];
+	[super dealloc];
+}
+
+- (void)setFilterModeForTexture:(GLuint)tex {
+	if (!tex)
+		return;
+
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_2D, tex); printOpenGLError();
+
+	GLint filter = GL_LINEAR;
+
+	switch (_videoContext.graphicsMode) {
+	case kGraphicsModeNone:
+		filter = GL_NEAREST;
+		break;
+
+	case kGraphicsModeLinear:
+	case kGraphicsMode2xSaI:
+	case kGraphicsModeSuper2xSaI:
+	case kGraphicsModeSuperEagle:
+	case kGraphicsModeAdvMame2x:
+	case kGraphicsModeAdvMame3x:
+	case kGraphicsModeHQ2x:
+	case kGraphicsModeHQ3x:
+	case kGraphicsModeTV2x:
+	case kGraphicsModeDotMatrix:
+		filter = GL_LINEAR;
+		break;
+	}
+
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter); printOpenGLError();
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter); printOpenGLError();
+	// We use GL_CLAMP_TO_EDGE here to avoid artifacts when linear filtering
+	// is used. If we would not use this for example the cursor in Loom would
+	// have a line/border artifact on the right side of the covered rect.
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); printOpenGLError();
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); printOpenGLError();
+}
+
+- (void)setScaler {
+	ScalerProc *scaler = NULL;
+	int scalerScale = 1;
+
+	switch (_videoContext.graphicsMode) {
+	case kGraphicsModeLinear:
+		break;
+
+	case kGraphicsModeNone:
+		break;
+#ifdef USE_SCALERS
+	case kGraphicsMode2xSaI:
+		scaler = _2xSaI;
+		scalerScale = 2;
+		break;
+
+	case kGraphicsModeSuper2xSaI:
+		scaler = Super2xSaI;
+		scalerScale = 2;
+		break;
+
+	case kGraphicsModeSuperEagle:
+		scaler = SuperEagle;
+		scalerScale = 2;
+		break;
+
+	case kGraphicsModeAdvMame2x:
+		scaler = AdvMame2x;
+		scalerScale = 2;
+		break;
+
+	case kGraphicsModeAdvMame3x:
+		scaler = AdvMame3x;
+		scalerScale = 3;
+		break;
+
+#ifdef USE_HQ_SCALERS
+	case kGraphicsModeHQ2x:
+		scaler = HQ2x;
+		scalerScale = 2;
+		break;
+
+	case kGraphicsModeHQ3x:
+		scaler = HQ3x;
+		scalerScale = 3;
+		break;
+#endif
+
+	case kGraphicsModeTV2x:
+		scaler = TV2x;
+		scalerScale = 2;
+		break;
+
+	case kGraphicsModeDotMatrix:
+		scaler = DotMatrix;
+		scalerScale = 2;
+		break;
+#endif
+
+	default:
+		break;
+	}
+
+	_scaler = scaler;
+	_scalerScale = scalerScale;
+}
+
+- (void)setGraphicsMode {
+	[self setFilterModeForTexture:_screenTexture];
+	[self setFilterModeForTexture:_overlayTexture];
+	[self setFilterModeForTexture:_mouseCursorTexture];
+	[self setScaler];
+}
+
+- (void)updateSurface {
+	if (!g_needsScreenUpdate) {
+		return;
+	}
+	g_needsScreenUpdate = 0;
+
+	glClear(GL_COLOR_BUFFER_BIT); printOpenGLError();
+
+	[self updateMainSurface];
+
+	if (_videoContext.overlayVisible)
+		[self updateOverlaySurface];
+
+	if (_videoContext.mouseIsVisible)
+		[self updateMouseSurface];
+
+	[_context presentRenderbuffer:GL_RENDERBUFFER];
+	glFinish();
+}
+
+- (void)notifyMouseMove {
+	const GLint mouseX = (GLint)(_videoContext.mouseX * _mouseScaleX) - _mouseHotspotX;
+	const GLint mouseY = (GLint)(_videoContext.mouseY * _mouseScaleY) - _mouseHotspotY;
+
+	_mouseCoords[0].x = _mouseCoords[2].x = mouseX;
+	_mouseCoords[0].y = _mouseCoords[1].y = mouseY;
+	_mouseCoords[1].x = _mouseCoords[3].x = mouseX + _mouseWidth;
+	_mouseCoords[2].y = _mouseCoords[3].y = mouseY + _mouseHeight;
+}
+
+- (void)updateMouseCursorScaling {
+	CGRect *rect;
+	int maxWidth, maxHeight;
+
+	if (!_videoContext.overlayVisible) {
+		rect = &_gameScreenRect;
+		maxWidth = _videoContext.screenWidth;
+		maxHeight = _videoContext.screenHeight;
+	} else {
+		rect = &_overlayRect;
+		maxWidth = _videoContext.overlayWidth;
+		maxHeight = _videoContext.overlayHeight;
+	}
+
+	if (!maxWidth || !maxHeight) {
+		printf("WARNING: updateMouseCursorScaling called when screen was not ready (%d)!\n", _videoContext.overlayVisible);
+		return;
+	}
+
+	_mouseScaleX = CGRectGetWidth(*rect) / (GLfloat)maxWidth;
+	_mouseScaleY = CGRectGetHeight(*rect) / (GLfloat)maxHeight;
+
+	_mouseWidth = (GLint)(_videoContext.mouseWidth * _mouseScaleX);
+	_mouseHeight = (GLint)(_videoContext.mouseHeight * _mouseScaleY);
+
+	_mouseHotspotX = (GLint)(_videoContext.mouseHotspotX * _mouseScaleX);
+	_mouseHotspotY = (GLint)(_videoContext.mouseHotspotY * _mouseScaleY);
+
+	// We subtract the screen offset to the hotspot here to simplify the
+	// screen offset handling in the mouse code. Note the subtraction here
+	// makes sure that the offset actually gets added to the mouse position,
+	// since the hotspot offset is substracted from the position.
+	_mouseHotspotX -= (GLint)CGRectGetMinX(*rect);
+	_mouseHotspotY -= (GLint)CGRectGetMinY(*rect);
+
+	// FIXME: For now we also adapt the mouse position here. In reality we
+	// would be better off to also adjust the event position when switching
+	// from overlay to game screen or vica versa.
+	[self notifyMouseMove];
+}
+
+- (void)updateMouseCursor {
+	[self updateMouseCursorScaling];
+
+	_mouseCoords[1].u = _mouseCoords[3].u = (_videoContext.mouseWidth - 1) / (GLfloat)_videoContext.mouseTexture.w;
+	_mouseCoords[2].v = _mouseCoords[3].v = (_videoContext.mouseHeight - 1) / (GLfloat)_videoContext.mouseTexture.h;
+
+	[self setFilterModeForTexture:_mouseCursorTexture];
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, _videoContext.mouseTexture.w, _videoContext.mouseTexture.h, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, _videoContext.mouseTexture.getPixels()); printOpenGLError();
+}
+
+- (void)updateMainSurface {
+	glBufferData(GL_ARRAY_BUFFER, sizeof(GLVertex) * 4, _gameScreenCoords, GL_STATIC_DRAW);
+	glVertexAttribPointer(_positionSlot, 2, GL_FLOAT, GL_FALSE, sizeof(GLVertex), 0);
+	glVertexAttribPointer(_textureCoordSlot, 2, GL_FLOAT, GL_FALSE, sizeof(GLVertex), (GLvoid *) (sizeof(GLfloat) * 2));
+
+	[self setFilterModeForTexture:_screenTexture];
+
+	// Unfortunately we have to update the whole texture every frame, since glTexSubImage2D is actually slower in all cases
+	// due to the iPhone internals having to convert the whole texture back from its internal format when used.
+	// In the future we could use several tiled textures instead.
+	if (_scaler) {
+		size_t neededSrcMemorySize = (size_t) (_videoContext.screenTexture.pitch * (_videoContext.screenTexture.h + 4));
+		size_t neededDstMemorySize = (size_t) (_videoContext.screenTexture.pitch * (_videoContext.screenTexture.h + 4) * _scalerScale * _scalerScale);
+		if (neededSrcMemorySize != _scalerMemorySrcSize) {
+			_scalerMemorySrc = (uint8_t *) realloc(_scalerMemorySrc, neededSrcMemorySize);
+			_scalerMemorySrcSize = neededSrcMemorySize;
+		}
+		if (neededDstMemorySize != _scalerMemoryDstSize) {
+			_scalerMemoryDst = (uint8_t *) realloc(_scalerMemoryDst, neededDstMemorySize);
+			_scalerMemoryDstSize = neededDstMemorySize;
+		}
+
+		// Clear two lines before
+		memset(_scalerMemorySrc, 0, (size_t) (_videoContext.screenTexture.pitch * 2));
+		// Copy original buffer
+		memcpy(_scalerMemorySrc + _videoContext.screenTexture.pitch * 2, _videoContext.screenTexture.getPixels(), _videoContext.screenTexture.pitch * _videoContext.screenTexture.h);
+		// Clear two lines after
+		memset(_scalerMemorySrc + _videoContext.screenTexture.pitch * (2 + _videoContext.screenTexture.h), 0, (size_t) (_videoContext.screenTexture.pitch * 2));
+		// Apply scaler
+		_scaler(_scalerMemorySrc + _videoContext.screenTexture.pitch * 2,
+		        _videoContext.screenTexture.pitch,
+		        _scalerMemoryDst,
+		        (uint32) (_videoContext.screenTexture.pitch * _scalerScale),
+		        _videoContext.screenTexture.w,
+		        _videoContext.screenTexture.h);
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, _videoContext.screenTexture.w * _scalerScale, _videoContext.screenTexture.h * _scalerScale, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, _scalerMemoryDst); printOpenGLError();
+	}
+	else {
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, _videoContext.screenTexture.w, _videoContext.screenTexture.h, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, _videoContext.screenTexture.getPixels()); printOpenGLError();
+	}
+
+	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); printOpenGLError();
+}
+
+- (void)updateOverlaySurface {
+	glBufferData(GL_ARRAY_BUFFER, sizeof(GLVertex) * 4, _overlayCoords, GL_STATIC_DRAW);
+	glVertexAttribPointer(_positionSlot, 2, GL_FLOAT, GL_FALSE, sizeof(GLVertex), 0);
+	glVertexAttribPointer(_textureCoordSlot, 2, GL_FLOAT, GL_FALSE, sizeof(GLVertex), (GLvoid *) (sizeof(GLfloat) * 2));
+
+	[self setFilterModeForTexture:_overlayTexture];
+
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, _videoContext.overlayTexture.w, _videoContext.overlayTexture.h, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, _videoContext.overlayTexture.getPixels()); printOpenGLError();
+	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); printOpenGLError();
+}
+
+- (void)updateMouseSurface {
+	glBufferData(GL_ARRAY_BUFFER, sizeof(GLVertex) * 4, _mouseCoords, GL_STATIC_DRAW);
+	glVertexAttribPointer(_positionSlot, 2, GL_FLOAT, GL_FALSE, sizeof(GLVertex), 0);
+	glVertexAttribPointer(_textureCoordSlot, 2, GL_FLOAT, GL_FALSE, sizeof(GLVertex), (GLvoid *) (sizeof(GLfloat) * 2));
+
+	glBindTexture(GL_TEXTURE_2D, _mouseCursorTexture); printOpenGLError();
+
+	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); printOpenGLError();
+}
+
+- (void)createScreenTexture {
+	const uint screenTexWidth = getSizeNextPOT(_videoContext.screenWidth);
+	const uint screenTexHeight = getSizeNextPOT(_videoContext.screenHeight);
+
+	_gameScreenCoords[1].u = _gameScreenCoords[3].u = _videoContext.screenWidth / (GLfloat)screenTexWidth;
+	_gameScreenCoords[2].v = _gameScreenCoords[3].v = _videoContext.screenHeight / (GLfloat)screenTexHeight;
+
+	_videoContext.screenTexture.create((uint16) screenTexWidth, (uint16) screenTexHeight, Graphics::createPixelFormat<565>());
+}
+
+- (void)initSurface {
+	if (_context) {
+		[self rebuildFrameBuffer];
+	}
+
+	BOOL isLandscape = (self.bounds.size.width > self.bounds.size.height); // UIDeviceOrientationIsLandscape([[UIDevice currentDevice] orientation]);
+
+	int screenWidth, screenHeight;
+	if (isLandscape) {
+		screenWidth = MAX(_renderBufferWidth, _renderBufferHeight);
+		screenHeight = MIN(_renderBufferWidth, _renderBufferHeight);
+	}
+	else {
+		screenWidth = MIN(_renderBufferWidth, _renderBufferHeight);
+		screenHeight = MAX(_renderBufferWidth, _renderBufferHeight);
+	}
+
+	glBindRenderbuffer(GL_RENDERBUFFER, _viewRenderbuffer); printOpenGLError();
+
+	[self clearColorBuffer];
+
+	GLfloat adjustedWidth = _videoContext.screenWidth;
+	GLfloat adjustedHeight = _videoContext.screenHeight;
+	if (_videoContext.asprectRatioCorrection) {
+		if (_videoContext.screenWidth == 320 && _videoContext.screenHeight == 200)
+			adjustedHeight = 240;
+		else if (_videoContext.screenWidth == 640 && _videoContext.screenHeight == 400)
+			adjustedHeight = 480;
+	}
+
+	float overlayPortraitRatio;
+
+	if (isLandscape) {
+		GLfloat gameScreenRatio = adjustedWidth / adjustedHeight;
+		GLfloat screenRatio = (GLfloat)screenWidth / (GLfloat)screenHeight;
+
+		// These are the width/height according to the portrait layout!
+		int rectWidth, rectHeight;
+		int xOffset, yOffset;
+
+		if (gameScreenRatio < screenRatio) {
+			// When the game screen ratio is less than the screen ratio
+			// we need to scale the width, since the game screen was higher
+			// compared to the width than our output screen is.
+			rectWidth = (int)(screenHeight * gameScreenRatio);
+			rectHeight = screenHeight;
+			xOffset = (screenWidth - rectWidth) / 2;
+			yOffset = 0;
+		} else {
+			// When the game screen ratio is bigger than the screen ratio
+			// we need to scale the height, since the game screen was wider
+			// compared to the height than our output screen is.
+			rectWidth = screenWidth;
+			rectHeight = (int)(screenWidth / gameScreenRatio);
+			xOffset = 0;
+			yOffset = (screenHeight - rectHeight) / 2;
+		}
+
+		[_keyboardView hideKeyboard];
+
+		//printf("Rect: %i, %i, %i, %i\n", xOffset, yOffset, rectWidth, rectHeight);
+		_gameScreenRect = CGRectMake(xOffset, yOffset, rectWidth, rectHeight);
+		overlayPortraitRatio = 1.0f;
+	} else {
+		GLfloat ratio = adjustedHeight / adjustedWidth;
+		int height = (int)(screenWidth * ratio);
+		//printf("Making rect (%u, %u)\n", screenWidth, height);
+		_gameScreenRect = CGRectMake(0, 0, screenWidth, height);
+
+		CGRect keyFrame = CGRectMake(0.0f, 0.0f, 0.0f, 0.0f);
+		if (_keyboardView == nil) {
+			_keyboardView = [[SoftKeyboard alloc] initWithFrame:keyFrame];
+			[_keyboardView setInputDelegate:self];
+			[self addSubview:[_keyboardView inputView]];
+			[self addSubview: _keyboardView];
+		}
+
+		[_keyboardView showKeyboard];
+		overlayPortraitRatio = (_videoContext.overlayHeight * ratio) / _videoContext.overlayWidth;
+	}
+	_overlayRect = CGRectMake(0, 0, screenWidth, screenHeight * overlayPortraitRatio);
+
+	_gameScreenCoords[0].x = _gameScreenCoords[2].x = CGRectGetMinX(_gameScreenRect);
+	_gameScreenCoords[0].y = _gameScreenCoords[1].y = CGRectGetMinY(_gameScreenRect);
+	_gameScreenCoords[1].x = _gameScreenCoords[3].x = CGRectGetMaxX(_gameScreenRect);
+	_gameScreenCoords[2].y = _gameScreenCoords[3].y = CGRectGetMaxY(_gameScreenRect);
+
+	_overlayCoords[1].x = _overlayCoords[3].x = CGRectGetMaxX(_overlayRect);
+	_overlayCoords[2].y = _overlayCoords[3].y = CGRectGetMaxY(_overlayRect);
+
+	[self setViewTransformation];
+	[self updateMouseCursorScaling];
+}
+
+- (void)setViewTransformation {
+	// Scale the shake offset according to the overlay size. We need this to
+	// adjust the overlay mouse click coordinates when an offset is set.
+	_scaledShakeOffsetY = (int)(_videoContext.shakeOffsetY / (GLfloat)_videoContext.screenHeight * CGRectGetHeight(_overlayRect));
+
+	glUniform1f(_shakeSlot, _scaledShakeOffsetY);
+}
+
+- (void)clearColorBuffer {
+	// The color buffer is triple-buffered, so we clear it multiple times right away to avid doing any glClears later.
+	int clearCount = 5;
+	while (clearCount-- > 0) {
+		glClear(GL_COLOR_BUFFER_BIT); printOpenGLError();
+		[_context presentRenderbuffer:GL_RENDERBUFFER];
+		glFinish();
+	}
+}
+
+- (void)addEvent:(InternalEvent)event {
+	[_eventLock lock];
+	_events.push_back(event);
+	[_eventLock unlock];
+}
+
+- (bool)fetchEvent:(InternalEvent *)event {
+	[_eventLock lock];
+	if (_events.empty()) {
+		[_eventLock unlock];
+		return false;
+	}
+
+	*event = *_events.begin();
+	_events.pop_front();
+	[_eventLock unlock];
+	return true;
+}
+
+- (bool)getMouseCoords:(CGPoint)point eventX:(int *)x eventY:(int *)y {
+	// We scale the input according to our scale factor to get actual screen
+	// coordinates.
+	point.x *= self.contentScaleFactor;
+	point.y *= self.contentScaleFactor;
+
+	CGRect *area;
+	int width, height, offsetY;
+	if (_videoContext.overlayVisible) {
+		area = &_overlayRect;
+		width = _videoContext.overlayWidth;
+		height = _videoContext.overlayHeight;
+		offsetY = _scaledShakeOffsetY;
+	} else {
+		area = &_gameScreenRect;
+		width = _videoContext.screenWidth;
+		height = _videoContext.screenHeight;
+		offsetY = _videoContext.shakeOffsetY;
+	}
+
+	point.x = (point.x - CGRectGetMinX(*area)) / CGRectGetWidth(*area);
+	point.y = (point.y - CGRectGetMinY(*area)) / CGRectGetHeight(*area);
+
+	*x = (int)(point.x * width);
+	// offsetY describes the translation of the screen in the upward direction,
+	// thus we need to add it here.
+	*y = (int)(point.y * height + offsetY);
+
+	if (!iOS7_touchpadModeEnabled()) {
+		// Clip coordinates
+		if (*x < 0 || *x > width || *y < 0 || *y > height)
+			return false;
+	}
+
+	return true;
+}
+
+- (void)deviceOrientationChanged:(UIDeviceOrientation)orientation {
+	[self addEvent:InternalEvent(kInputOrientationChanged, orientation, 0)];
+}
+
+- (UITouch *)secondTouchOtherTouchThan:(UITouch *)touch in:(NSSet *)set {
+	NSArray *all = [set allObjects];
+	for (UITouch *t in all) {
+		if (t != touch) {
+			return t;
+		}
+	}
+	return nil;
+}
+
+- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
+	int x, y;
+
+	NSSet *allTouches = [event allTouches];
+	if (allTouches.count == 1) {
+		_firstTouch = [allTouches anyObject];
+		CGPoint point = [_firstTouch locationInView:self];
+		if (![self getMouseCoords:point eventX:&x eventY:&y])
+			return;
+
+		[self addEvent:InternalEvent(kInputMouseDown, x, y)];
+	}
+	else if (allTouches.count == 2) {
+		_secondTouch = [self secondTouchOtherTouchThan:_firstTouch in:allTouches];
+		if (_secondTouch) {
+			CGPoint point = [_secondTouch locationInView:self];
+			if (![self getMouseCoords:point eventX:&x eventY:&y])
+				return;
+
+			[self addEvent:InternalEvent(kInputMouseSecondDown, x, y)];
+		}
+	}
+}
+
+- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
+	int x, y;
+
+	NSSet *allTouches = [event allTouches];
+	for (UITouch *touch in allTouches) {
+		if (touch == _firstTouch) {
+			CGPoint point = [touch locationInView:self];
+			if (![self getMouseCoords:point eventX:&x eventY:&y])
+				return;
+
+			[self addEvent:InternalEvent(kInputMouseDragged, x, y)];
+		} else if (touch == _secondTouch) {
+			CGPoint point = [touch locationInView:self];
+			if (![self getMouseCoords:point eventX:&x eventY:&y])
+				return;
+			
+			[self addEvent:InternalEvent(kInputMouseSecondDragged, x, y)];
+		}
+	}
+}
+
+- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
+	int x, y;
+
+	NSSet *allTouches = [event allTouches];
+	if (allTouches.count == 1) {
+		UITouch *touch = [allTouches anyObject];
+		CGPoint point = [touch locationInView:self];
+		if (![self getMouseCoords:point eventX:&x eventY:&y]) {
+			return;
+		}
+
+		[self addEvent:InternalEvent(kInputMouseUp, x, y)];
+	}
+	else if (allTouches.count == 2) {
+		UITouch *touch = [[allTouches allObjects] objectAtIndex:1];
+		CGPoint point = [touch locationInView:self];
+		if (![self getMouseCoords:point eventX:&x eventY:&y])
+			return;
+
+		[self addEvent:InternalEvent(kInputMouseSecondUp, x, y)];
+	}
+	_firstTouch = nil;
+	_secondTouch = nil;
+}
+
+- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
+	_firstTouch = nil;
+	_secondTouch = nil;
+}
+
+- (void)twoFingersSwipeRight:(UISwipeGestureRecognizer *)recognizer {
+	[self addEvent:InternalEvent(kInputSwipe, kUIViewSwipeRight, 2)];
+}
+
+- (void)twoFingersSwipeLeft:(UISwipeGestureRecognizer *)recognizer {
+	[self addEvent:InternalEvent(kInputSwipe, kUIViewSwipeLeft, 2)];
+}
+
+- (void)twoFingersSwipeUp:(UISwipeGestureRecognizer *)recognizer {
+	[self addEvent:InternalEvent(kInputSwipe, kUIViewSwipeUp, 2)];
+}
+
+- (void)twoFingersSwipeDown:(UISwipeGestureRecognizer *)recognizer {
+	[self addEvent:InternalEvent(kInputSwipe, kUIViewSwipeDown, 2)];
+}
+
+- (void)twoFingersDoubleTap:(UITapGestureRecognizer *)recognizer {
+	[self addEvent:InternalEvent(kInputTap, kUIViewTapDouble, 2)];
+}
+
+- (void)handleKeyPress:(unichar)c {
+	[self addEvent:InternalEvent(kInputKeyPressed, c, 0)];
+}
+
+- (void)applicationSuspend {
+	[self addEvent:InternalEvent(kInputApplicationSuspended, 0, 0)];
+}
+
+- (void)applicationResume {
+	[self addEvent:InternalEvent(kInputApplicationResumed, 0, 0)];
+}
+
+@end
diff --git a/backends/platform/ios7/module.mk b/backends/platform/ios7/module.mk
new file mode 100644
index 0000000000..5ee4c7a601
--- /dev/null
+++ b/backends/platform/ios7/module.mk
@@ -0,0 +1,17 @@
+MODULE := backends/platform/ios7
+
+MODULE_OBJS := \
+	ios7_osys_main.o \
+	ios7_osys_events.o \
+	ios7_osys_sound.o \
+	ios7_osys_video.o \
+	ios7_main.o \
+	ios7_video.o \
+	ios7_keyboard.o \
+	iOS7ScummVMViewController.o \
+	iOS7AppDelegate.o
+
+# We don't use rules.mk but rather manually update OBJS and MODULE_DIRS.
+MODULE_OBJS := $(addprefix $(MODULE)/, $(MODULE_OBJS))
+OBJS := $(MODULE_OBJS) $(OBJS)
+MODULE_DIRS += $(sort $(dir $(MODULE_OBJS)))