DINGOO: new port. Patch #3039277

svn-id: r52210

9 files changed, 750 insertions, 3 deletions

diff --git a/backends/platform/dingux/dingux-events.cpp b/backends/platform/dingux/dingux-events.cpp
new file mode 100644
index 0000000000..23082e0181
--- /dev/null
+++ b/backends/platform/dingux/dingux-events.cpp
@@ -0,0 +1,191 @@
+
+#include "backends/platform/dingux/dingux.h"
+
+#include "graphics/scaler/aspect.h"	// for aspect2Real
+
+#if defined (DINGUX)
+
+#define PAD_UP    SDLK_UP
+#define PAD_DOWN  SDLK_DOWN
+#define PAD_LEFT  SDLK_LEFT
+#define PAD_RIGHT SDLK_RIGHT
+#define BUT_A     SDLK_LCTRL
+#define BUT_B     SDLK_LALT
+#define BUT_X     SDLK_SPACE
+#define BUT_Y     SDLK_LSHIFT
+#define BUT_SELECT   SDLK_ESCAPE
+#define BUT_START    SDLK_RETURN
+#define TRIG_L    SDLK_TAB
+#define TRIG_R    SDLK_BACKSPACE
+
+static int mapKey(SDLKey key, SDLMod mod, Uint16 unicode) {
+	if (key >= SDLK_F1 && key <= SDLK_F9) {
+		return key - SDLK_F1 + Common::ASCII_F1;
+	} else if (key >= SDLK_KP0 && key <= SDLK_KP9) {
+		return key - SDLK_KP0 + '0';
+	} else if (key >= SDLK_UP && key <= SDLK_PAGEDOWN) {
+		return key;
+	} else if (unicode) {
+		return unicode;
+	} else if (key >= 'a' && key <= 'z' && (mod & KMOD_SHIFT)) {
+		return key & ~0x20;
+	} else if (key >= SDLK_NUMLOCK && key <= SDLK_EURO) {
+		return 0;
+	}
+	return key;
+}
+
+bool OSystem_SDL_Dingux::remapKey(SDL_Event &ev, Common::Event &event) {
+	if (ev.key.keysym.sym == PAD_UP) {
+		if (ev.type == SDL_KEYDOWN) {
+			_km.y_vel = -1;
+			_km.y_down_count = 1;
+		} else {
+			_km.y_vel = 0;
+			_km.y_down_count = 0;
+		}
+
+		event.type = Common::EVENT_MOUSEMOVE;
+		fillMouseEvent(event, _km.x, _km.y);
+
+		return true;
+	} else if (ev.key.keysym.sym == PAD_DOWN) {
+		if (ev.type == SDL_KEYDOWN) {
+			_km.y_vel = 1;
+			_km.y_down_count = 1;
+		} else {
+			_km.y_vel = 0;
+			_km.y_down_count = 0;
+		}
+
+		event.type = Common::EVENT_MOUSEMOVE;
+		fillMouseEvent(event, _km.x, _km.y);
+
+		return true;
+	} else if (ev.key.keysym.sym == PAD_LEFT) {
+		if (ev.type == SDL_KEYDOWN) {
+			_km.x_vel = -1;
+			_km.x_down_count = 1;
+		} else {
+			_km.x_vel = 0;
+			_km.x_down_count = 0;
+		}
+
+		event.type = Common::EVENT_MOUSEMOVE;
+		fillMouseEvent(event, _km.x, _km.y);
+
+		return true;
+	} else if (ev.key.keysym.sym == PAD_RIGHT) {
+		if (ev.type == SDL_KEYDOWN) {
+			_km.x_vel = 1;
+			_km.x_down_count = 1;
+		} else {
+			_km.x_vel = 0;
+			_km.x_down_count = 0;
+		}
+
+		event.type = Common::EVENT_MOUSEMOVE;
+		fillMouseEvent(event, _km.x, _km.y);
+
+		return true;
+	} else if (ev.key.keysym.sym == BUT_Y) { // left mouse button
+		if (ev.type == SDL_KEYDOWN) {
+			event.type = Common::EVENT_LBUTTONDOWN;
+		} else {
+			event.type = Common::EVENT_LBUTTONUP;
+		}
+
+		fillMouseEvent(event, _km.x, _km.y);
+
+		return true;
+	} else if (ev.key.keysym.sym == BUT_B) { // right mouse button
+		if (ev.type == SDL_KEYDOWN) {
+			event.type = Common::EVENT_RBUTTONDOWN;
+		} else {
+			event.type = Common::EVENT_RBUTTONUP;
+		}
+
+		fillMouseEvent(event, _km.x, _km.y);
+
+		return true;
+	} else if (ev.key.keysym.sym == BUT_X) { // '.' skip dialogue
+		ev.key.keysym.sym = SDLK_PERIOD;
+		ev.key.keysym.mod = (SDLMod)0;
+		ev.key.keysym.unicode = '.';
+	} else if (ev.key.keysym.sym == TRIG_L) { // global menu
+		ev.key.keysym.sym = SDLK_F5;
+		event.kbd.keycode = Common::KEYCODE_F5;
+		event.kbd.ascii = Common::ASCII_F5;
+		event.kbd.flags = Common::KBD_CTRL;
+
+		if (ev.type == SDL_KEYDOWN) {
+			event.type = Common::EVENT_KEYDOWN;
+		} else {
+			event.type = Common::EVENT_KEYUP;
+		}
+
+		return true;
+	} else if (ev.key.keysym.sym == BUT_A) { // virtual keyboard
+		ev.key.keysym.sym = SDLK_0;
+
+		event.kbd.keycode = Common::KEYCODE_0;
+		event.kbd.ascii = '0';
+		event.kbd.flags = 0;
+
+		if (ev.type == SDL_KEYDOWN) {
+			event.type = Common::EVENT_KEYDOWN;
+		} else {
+			event.type = Common::EVENT_KEYUP;
+		}
+
+		return true;
+	} else if (ev.key.keysym.sym == BUT_SELECT) { // virtual keyboard
+		ev.key.keysym.sym = SDLK_F7;
+
+	} else if (ev.key.keysym.sym == BUT_START) { // F5, menu in some games
+		ev.key.keysym.sym = SDLK_F5;
+
+	}  else if (ev.key.keysym.sym == TRIG_R) { // ESC
+		ev.key.keysym.sym = SDLK_ESCAPE;
+	} else {
+		event.kbd.keycode = (Common::KeyCode)ev.key.keysym.sym;
+		event.kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode);
+	}
+
+	return false;
+}
+
+void OSystem_SDL_Dingux::fillMouseEvent(Common::Event &event, int x, int y) {
+	if (_videoMode.mode == GFX_HALF && !_overlayVisible) {
+		event.mouse.x = x * 2;
+		event.mouse.y = y * 2;
+	} else {
+		event.mouse.x = x;
+		event.mouse.y = y;
+	}
+
+	// Update the "keyboard mouse" coords
+	_km.x = x;
+	_km.y = y;
+
+	// Adjust for the screen scaling
+	if (!_overlayVisible) {
+		event.mouse.x /= _videoMode.scaleFactor;
+		event.mouse.y /= _videoMode.scaleFactor;
+		if (_videoMode.aspectRatioCorrection)
+			event.mouse.y = aspect2Real(event.mouse.y);
+	}
+}
+
+void OSystem_SDL_Dingux::warpMouse(int x, int y) {
+	if (_mouseCurState.x != x || _mouseCurState.y != y) {
+		if (_videoMode.mode == GFX_HALF && !_overlayVisible) {
+			x = x / 2;
+			y = y / 2;
+		}
+	}
+	OSystem_SDL::warpMouse(x, y);
+}
+
+#endif
+
diff --git a/backends/platform/dingux/dingux-graphics.cpp b/backends/platform/dingux/dingux-graphics.cpp
new file mode 100644
index 0000000000..e2d37743bf
--- /dev/null
+++ b/backends/platform/dingux/dingux-graphics.cpp
@@ -0,0 +1,436 @@
+
+#include "backends/platform/dingux/dingux.h"
+
+#include "common/mutex.h"
+#include "graphics/scaler.h"
+#include "graphics/scaler/aspect.h"
+#include "graphics/scaler/downscaler.h"
+#include "graphics/surface.h"
+
+#if defined (DINGUX)
+
+static const OSystem::GraphicsMode s_supportedGraphicsModes[] = {
+	{"1x", "Standard", GFX_NORMAL},
+	{0, 0, 0}
+};
+
+int OSystem_SDL_Dingux::getDefaultGraphicsMode() const {
+	return GFX_NORMAL;
+}
+
+const OSystem::GraphicsMode *OSystem_SDL_Dingux::getSupportedGraphicsModes() const {
+	return s_supportedGraphicsModes;
+}
+
+bool OSystem_SDL_Dingux::setGraphicsMode(int mode) {
+	Common::StackLock lock(_graphicsMutex);
+
+	assert(_transactionMode == kTransactionActive);
+
+	if (_oldVideoMode.setup && _oldVideoMode.mode == mode)
+		return true;
+
+	int newScaleFactor = 1;
+
+	switch (mode) {
+	case GFX_NORMAL:
+		newScaleFactor = 1;
+		break;
+	case GFX_HALF:
+		newScaleFactor = 1;
+		break;
+	default:
+		warning("unknown gfx mode %d", mode);
+		return false;
+	}
+
+	_transactionDetails.normal1xScaler = (mode == GFX_NORMAL);
+	if (_oldVideoMode.setup && _oldVideoMode.scaleFactor != newScaleFactor)
+		_transactionDetails.needHotswap = true;
+
+	_transactionDetails.needUpdatescreen = true;
+
+	_videoMode.mode = mode;
+	_videoMode.scaleFactor = newScaleFactor;
+
+	return true;
+}
+
+void OSystem_SDL_Dingux::setGraphicsModeIntern() {
+	Common::StackLock lock(_graphicsMutex);
+	ScalerProc *newScalerProc = 0;
+
+	switch (_videoMode.mode) {
+	case GFX_NORMAL:
+		newScalerProc = Normal1x;
+		break;
+	case GFX_HALF:
+		newScalerProc = DownscaleAllByHalf;
+		break;
+
+	default:
+		error("Unknown gfx mode %d", _videoMode.mode);
+	}
+
+	_scalerProc = newScalerProc;
+
+	if (!_screen || !_hwscreen)
+		return;
+
+	// Blit everything to the screen
+	_forceFull = true;
+
+	// Even if the old and new scale factors are the same, we may have a
+	// different scaler for the cursor now.
+	blitCursor();
+}
+
+void OSystem_SDL_Dingux::initSize(uint w, uint h) {
+	assert(_transactionMode == kTransactionActive);
+
+	// Avoid redundant res changes
+	if ((int)w == _videoMode.screenWidth && (int)h == _videoMode.screenHeight)
+		return;
+
+	_videoMode.screenWidth = w;
+	_videoMode.screenHeight = h;
+	if (w > 320 || h > 240) {
+		setGraphicsMode(GFX_HALF);
+		setGraphicsModeIntern();
+		toggleMouseGrab();
+	}
+
+	_transactionDetails.sizeChanged = true;
+}
+
+void OSystem_SDL_Dingux::drawMouse() {
+	if (!_mouseVisible || !_mouseSurface) {
+		_mouseBackup.x = _mouseBackup.y = _mouseBackup.w = _mouseBackup.h = 0;
+		return;
+	}
+
+	SDL_Rect dst;
+	int scale;
+	int hotX, hotY;
+
+	if (_videoMode.mode == GFX_HALF && !_overlayVisible) {
+		dst.x = _mouseCurState.x / 2;
+		dst.y = _mouseCurState.y / 2;
+	} else {
+		dst.x = _mouseCurState.x;
+		dst.y = _mouseCurState.y;
+	}
+
+	if (!_overlayVisible) {
+		scale = _videoMode.scaleFactor;
+		dst.w = _mouseCurState.vW;
+		dst.h = _mouseCurState.vH;
+		hotX = _mouseCurState.vHotX;
+		hotY = _mouseCurState.vHotY;
+	} else {
+		scale = 1;
+		dst.w = _mouseCurState.rW;
+		dst.h = _mouseCurState.rH;
+		hotX = _mouseCurState.rHotX;
+		hotY = _mouseCurState.rHotY;
+	}
+
+	// The mouse is undrawn using virtual coordinates, i.e. they may be
+	// scaled and aspect-ratio corrected.
+
+	_mouseBackup.x = dst.x - hotX;
+	_mouseBackup.y = dst.y - hotY;
+	_mouseBackup.w = dst.w;
+	_mouseBackup.h = dst.h;
+
+	// We draw the pre-scaled cursor image, so now we need to adjust for
+	// scaling, shake position and aspect ratio correction manually.
+
+	if (!_overlayVisible) {
+		dst.y += _currentShakePos;
+	}
+
+	if (_videoMode.aspectRatioCorrection && !_overlayVisible)
+		dst.y = real2Aspect(dst.y);
+
+	dst.x = scale * dst.x - _mouseCurState.rHotX;
+	dst.y = scale * dst.y - _mouseCurState.rHotY;
+	dst.w = _mouseCurState.rW;
+	dst.h = _mouseCurState.rH;
+
+	// Note that SDL_BlitSurface() and addDirtyRect() will both perform any
+	// clipping necessary
+
+	if (SDL_BlitSurface(_mouseSurface, NULL, _hwscreen, &dst) != 0)
+		error("SDL_BlitSurface failed: %s", SDL_GetError());
+
+	// The screen will be updated using real surface coordinates, i.e.
+	// they will not be scaled or aspect-ratio corrected.
+	addDirtyRect(dst.x, dst.y, dst.w, dst.h, true);
+}
+
+void OSystem_SDL_Dingux::undrawMouse() {
+	const int x = _mouseBackup.x;
+	const int y = _mouseBackup.y;
+
+	// When we switch bigger overlay off mouse jumps. Argh!
+	// This is intended to prevent undrawing offscreen mouse
+	if (!_overlayVisible && (x >= _videoMode.screenWidth || y >= _videoMode.screenHeight))
+		return;
+
+	if (_mouseBackup.w != 0 && _mouseBackup.h != 0) {
+		if (_videoMode.mode == GFX_HALF && !_overlayVisible) {
+			addDirtyRect(x*2, y*2, _mouseBackup.w*2, _mouseBackup.h*2);
+		} else {
+			addDirtyRect(x, y, _mouseBackup.w, _mouseBackup.h);
+		}
+	}
+}
+
+void OSystem_SDL_Dingux::internUpdateScreen() {
+	SDL_Surface *srcSurf, *origSurf;
+	int height, width;
+	ScalerProc *scalerProc;
+	int scale1;
+
+#if defined (DEBUG) && ! defined(_WIN32_WCE) // definitions not available for non-DEBUG here. (needed this to compile in SYMBIAN32 & linux?)
+	assert(_hwscreen != NULL);
+	assert(_hwscreen->map->sw_data != NULL);
+#endif
+
+	// If the shake position changed, fill the dirty area with blackness
+	if (_currentShakePos != _newShakePos) {
+		SDL_Rect blackrect = {0, 0, _videoMode.screenWidth * _videoMode.scaleFactor, _newShakePos * _videoMode.scaleFactor};
+
+		if (_videoMode.aspectRatioCorrection && !_overlayVisible)
+			blackrect.h = real2Aspect(blackrect.h - 1) + 1;
+
+		SDL_FillRect(_hwscreen, &blackrect, 0);
+
+		_currentShakePos = _newShakePos;
+
+		_forceFull = true;
+	}
+
+	// Check whether the palette was changed in the meantime and update the
+	// screen surface accordingly.
+	if (_screen && _paletteDirtyEnd != 0) {
+		SDL_SetColors(_screen, _currentPalette + _paletteDirtyStart,
+		              _paletteDirtyStart,
+		              _paletteDirtyEnd - _paletteDirtyStart);
+
+		_paletteDirtyEnd = 0;
+
+		_forceFull = true;
+	}
+
+#ifdef USE_OSD
+	// OSD visible (i.e. non-transparent)?
+	if (_osdAlpha != SDL_ALPHA_TRANSPARENT) {
+		// Updated alpha value
+		const int diff = SDL_GetTicks() - _osdFadeStartTime;
+		if (diff > 0) {
+			if (diff >= kOSDFadeOutDuration) {
+				// Back to full transparency
+				_osdAlpha = SDL_ALPHA_TRANSPARENT;
+			} else {
+				// Do a linear fade out...
+				const int startAlpha = SDL_ALPHA_TRANSPARENT + kOSDInitialAlpha * (SDL_ALPHA_OPAQUE - SDL_ALPHA_TRANSPARENT) / 100;
+				_osdAlpha = startAlpha + diff * (SDL_ALPHA_TRANSPARENT - startAlpha) / kOSDFadeOutDuration;
+			}
+			SDL_SetAlpha(_osdSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, _osdAlpha);
+			_forceFull = true;
+		}
+	}
+#endif
+
+	if (!_overlayVisible) {
+		origSurf = _screen;
+		srcSurf = _tmpscreen;
+		width = _videoMode.screenWidth;
+		height = _videoMode.screenHeight;
+		scalerProc = _scalerProc;
+		scale1 = _videoMode.scaleFactor;
+	} else {
+		origSurf = _overlayscreen;
+		srcSurf = _tmpscreen2;
+		width = _videoMode.overlayWidth;
+		height = _videoMode.overlayHeight;
+		scalerProc = Normal1x;
+		scale1 = 1;
+	}
+
+	// Add the area covered by the mouse cursor to the list of dirty rects if
+	// we have to redraw the mouse.
+	if (_mouseNeedsRedraw)
+		undrawMouse();
+
+	// Force a full redraw if requested
+	if (_forceFull) {
+		_numDirtyRects = 1;
+		_dirtyRectList[0].x = 0;
+		_dirtyRectList[0].y = 0;
+		_dirtyRectList[0].w = width;
+		_dirtyRectList[0].h = height;
+	}
+
+	// Only draw anything if necessary
+	if (_numDirtyRects > 0 || _mouseNeedsRedraw) {
+		SDL_Rect *r;
+		SDL_Rect dst;
+		uint32 srcPitch, dstPitch;
+		SDL_Rect *lastRect = _dirtyRectList + _numDirtyRects;
+
+		for (r = _dirtyRectList; r != lastRect; ++r) {
+			dst = *r;
+			dst.x++;	// Shift rect by one since 2xSai needs to access the data around
+			dst.y++;	// any pixel to scale it, and we want to avoid mem access crashes.
+
+			if (SDL_BlitSurface(origSurf, r, srcSurf, &dst) != 0)
+				error("SDL_BlitSurface failed: %s", SDL_GetError());
+		}
+
+		SDL_LockSurface(srcSurf);
+		SDL_LockSurface(_hwscreen);
+
+		srcPitch = srcSurf->pitch;
+		dstPitch = _hwscreen->pitch;
+
+		for (r = _dirtyRectList; r != lastRect; ++r) {
+			register int dst_y = r->y + _currentShakePos;
+			register int dst_h = 0;
+			register int dst_w = r->w;
+			register int orig_dst_y = 0;
+			register int dst_x = r->x;
+			register int src_y;
+			register int src_x;
+
+			if (dst_y < height) {
+				dst_h = r->h;
+				if (dst_h > height - dst_y)
+					dst_h = height - dst_y;
+
+				orig_dst_y = dst_y;
+				src_x = dst_x;
+				src_y = dst_y;
+
+				if (_videoMode.aspectRatioCorrection && !_overlayVisible)
+					dst_y = real2Aspect(dst_y);
+
+				assert(scalerProc != NULL);
+
+				if ((_videoMode.mode == GFX_HALF) && (scalerProc == DownscaleAllByHalf)) {
+					if (dst_x % 2 == 1) {
+						dst_x--;
+						dst_w++;
+					}
+					if (dst_y % 2 == 1) {
+						dst_y--;
+						dst_h++;
+					}
+					src_x = dst_x;
+					src_y = dst_y;
+					dst_x = dst_x / 2;
+					dst_y = dst_y / 2;
+
+					scalerProc((byte *)srcSurf->pixels + (src_x * 2 + 2) + (src_y + 1) * srcPitch, srcPitch,
+					           (byte *)_hwscreen->pixels + dst_x * 2 + dst_y * dstPitch, dstPitch, dst_w, dst_h);
+
+				} else {
+					scalerProc((byte *)srcSurf->pixels + (r->x * 2 + 2) + (r->y + 1) * srcPitch, srcPitch,
+					           (byte *)_hwscreen->pixels + r->x * 2 + dst_y * dstPitch, dstPitch, r->w, dst_h);
+				}
+			}
+
+			if (_videoMode.mode == GFX_HALF && scalerProc == DownscaleAllByHalf) {
+				r->w = r->w / 2;
+				r->h = dst_h / 2;
+			} else {
+				r->w = r->w;
+				r->h = dst_h;
+			}
+
+			r->x = dst_x;
+			r->y = dst_y;
+
+
+#ifdef USE_SCALERS
+			if (_videoMode.aspectRatioCorrection && orig_dst_y < height && !_overlayVisible)
+				r->h = stretch200To240((uint8 *) _hwscreen->pixels, dstPitch, r->w, r->h, r->x, r->y, orig_dst_y * scale1);
+#endif
+		}
+		SDL_UnlockSurface(srcSurf);
+		SDL_UnlockSurface(_hwscreen);
+
+		// Readjust the dirty rect list in case we are doing a full update.
+		// This is necessary if shaking is active.
+		if (_forceFull) {
+			_dirtyRectList[0].y = 0;
+			_dirtyRectList[0].h = (_videoMode.mode == GFX_HALF) ? effectiveScreenHeight() / 2 : effectiveScreenHeight();
+		}
+
+		drawMouse();
+
+#ifdef USE_OSD
+		if (_osdAlpha != SDL_ALPHA_TRANSPARENT) {
+			SDL_BlitSurface(_osdSurface, 0, _hwscreen, 0);
+		}
+#endif
+		// Finally, blit all our changes to the screen
+		SDL_UpdateRects(_hwscreen, _numDirtyRects, _dirtyRectList);
+	}
+
+	_numDirtyRects = 0;
+	_forceFull = false;
+	_mouseNeedsRedraw = false;
+}
+
+void OSystem_SDL_Dingux::showOverlay() {
+	if (_videoMode.mode == GFX_HALF) {
+		_mouseCurState.x = _mouseCurState.x / 2;
+		_mouseCurState.y = _mouseCurState.y / 2;
+	}
+	OSystem_SDL::showOverlay();
+}
+
+void OSystem_SDL_Dingux::hideOverlay() {
+	if (_videoMode.mode == GFX_HALF) {
+		_mouseCurState.x = _mouseCurState.x * 2;
+		_mouseCurState.y = _mouseCurState.y * 2;
+	}
+	OSystem_SDL::hideOverlay();
+}
+
+bool OSystem_SDL_Dingux::loadGFXMode() {
+	fprintf(stdout, "Game ScreenMode = %d*%d\n", _videoMode.screenWidth, _videoMode.screenHeight);
+	if (_videoMode.screenWidth > 320 || _videoMode.screenHeight > 240) {
+		_videoMode.aspectRatioCorrection = false;
+		setGraphicsMode(GFX_HALF);
+		fprintf(stdout, "GraphicsMode set to HALF\n");
+	} else {
+		setGraphicsMode(GFX_NORMAL);
+		fprintf(stdout, "GraphicsMode set to NORMAL\n");
+	}
+
+	if ((_videoMode.mode == GFX_HALF) && !_overlayVisible) {
+		_videoMode.overlayWidth = _videoMode.screenWidth / 2;
+		_videoMode.overlayHeight = _videoMode.screenHeight / 2;
+		_videoMode.fullscreen = true;
+	} else {
+
+		_videoMode.overlayWidth = _videoMode.screenWidth * _videoMode.scaleFactor;
+		_videoMode.overlayHeight = _videoMode.screenHeight * _videoMode.scaleFactor;
+
+		if (_videoMode.aspectRatioCorrection)
+			_videoMode.overlayHeight = real2Aspect(_videoMode.overlayHeight);
+
+		_videoMode.hardwareWidth = _videoMode.screenWidth * _videoMode.scaleFactor;
+		_videoMode.hardwareHeight = effectiveScreenHeight();
+	}
+
+
+	return OSystem_SDL::loadGFXMode();
+}
+
+#endif
+
diff --git a/backends/platform/dingux/dingux.cpp b/backends/platform/dingux/dingux.cpp
new file mode 100644
index 0000000000..a253e8bce1
--- /dev/null
+++ b/backends/platform/dingux/dingux.cpp
@@ -0,0 +1,34 @@
+
+#include "backends/platform/dingux/dingux.h"
+
+#if defined(DINGUX)
+
+bool OSystem_SDL_Dingux::hasFeature(Feature f) {
+	return
+	    (f == kFeatureAspectRatioCorrection) ||
+	    (f == kFeatureCursorHasPalette);
+}
+
+void OSystem_SDL_Dingux::setFeatureState(Feature f, bool enable) {
+	switch (f) {
+	case kFeatureAspectRatioCorrection:
+		setAspectRatioCorrection(enable);
+		break;
+	default:
+		break;
+	}
+}
+
+bool OSystem_SDL_Dingux::getFeatureState(Feature f) {
+	assert(_transactionMode == kTransactionNone);
+
+	switch (f) {
+	case kFeatureAspectRatioCorrection:
+		return _videoMode.aspectRatioCorrection;
+	default:
+		return false;
+	}
+}
+
+#endif
+
diff --git a/backends/platform/dingux/dingux.h b/backends/platform/dingux/dingux.h
new file mode 100644
index 0000000000..929abc0587
--- /dev/null
+++ b/backends/platform/dingux/dingux.h
@@ -0,0 +1,44 @@
+
+#ifndef SDL_DINGUX_COMMON_H
+#define SDL_DINGUX_COMMON_H
+
+#include <SDL.h>
+
+#include "backends/base-backend.h"
+#include "backends/platform/sdl/sdl.h"
+
+#if defined(DINGUX)
+
+enum {
+	GFX_HALF = 12
+};
+
+class OSystem_SDL_Dingux : public OSystem_SDL {
+public:
+	virtual bool hasFeature(Feature f);
+	virtual void setFeatureState(Feature f, bool enable);
+	virtual bool getFeatureState(Feature f);
+	virtual int getDefaultGraphicsMode() const;
+	void initSize(uint w, uint h);
+	const OSystem::GraphicsMode *getSupportedGraphicsModes() const;
+	bool setGraphicsMode(const char *name);
+	bool setGraphicsMode(int mode);
+	void setGraphicsModeIntern();
+	void internUpdateScreen();
+	void showOverlay();
+	void hideOverlay();
+	bool loadGFXMode();
+	void drawMouse();
+	void undrawMouse();	
+	void warpMouse(int, int);
+	void fillMouseEvent(Common::Event&, int, int);
+
+protected:
+	virtual bool remapKey(SDL_Event &ev, Common::Event &event);
+};
+
+
+#endif
+
+#endif
+
diff --git a/backends/platform/dingux/main.cpp b/backends/platform/dingux/main.cpp
new file mode 100644
index 0000000000..410dee9afe
--- /dev/null
+++ b/backends/platform/dingux/main.cpp
@@ -0,0 +1,29 @@
+
+#include "backends/platform/dingux/dingux.h"
+#include "backends/plugins/sdl/sdl-provider.h"
+//#include "backends/plugins/posix/posix-provider.h"
+#include "base/main.h"
+
+#if defined(DINGUX)
+
+#include <unistd.h>
+
+int main(int argc, char* argv[]) {
+
+	g_system = new OSystem_SDL_Dingux();
+	assert(g_system);
+
+#ifdef DYNAMIC_MODULES
+	PluginManager::instance().addPluginProvider(new SDLPluginProvider());
+//	PluginManager::instance().addPluginProvider(new POSIXPluginProvider());
+#endif
+
+	// Invoke the actual ScummVM main entry point:
+	int res = scummvm_main(argc, argv);
+	((OSystem_SDL *)g_system)->deinit();
+	return res;
+
+}
+
+#endif
+
diff --git a/backends/platform/dingux/module.mk b/backends/platform/dingux/module.mk
new file mode 100644
index 0000000000..309fb94442
--- /dev/null
+++ b/backends/platform/dingux/module.mk
@@ -0,0 +1,13 @@
+MODULE := backends/platform/dingux
+
+MODULE_OBJS := \
+	main.o \
+	dingux.o \
+	dingux-events.o \
+	dingux-graphics.o \
+
+MODULE_DIRS += \
+	backends/platform/dingux/
+
+# We don't use the rules.mk here on purpose
+OBJS := $(addprefix $(MODULE)/, $(MODULE_OBJS)) $(OBJS)
diff --git a/backends/platform/sdl/graphics.cpp b/backends/platform/sdl/graphics.cpp
index a97a153f3c..80bfca4514 100644
--- a/backends/platform/sdl/graphics.cpp
+++ b/backends/platform/sdl/graphics.cpp
@@ -537,7 +537,7 @@ bool OSystem_SDL::loadGFXMode() {
 	assert(_inited);
 	_forceFull = true;
 
-#if !defined(__MAEMO__) && !defined(GP2XWIZ) && !defined(LINUXMOTO)
+#if !defined(__MAEMO__) && !defined(GP2XWIZ) && !defined(LINUXMOTO) && !defined(DINGUX)
 	_videoMode.overlayWidth = _videoMode.screenWidth * _videoMode.scaleFactor;
 	_videoMode.overlayHeight = _videoMode.screenHeight * _videoMode.scaleFactor;
 
diff --git a/backends/platform/sdl/main.cpp b/backends/platform/sdl/main.cpp
index 52bbb59165..9d116d325a 100644
--- a/backends/platform/sdl/main.cpp
+++ b/backends/platform/sdl/main.cpp
@@ -38,7 +38,7 @@
 
 // Several SDL based ports use a custom main, and hence do not want to compile
 // of this file. The following "#if" ensures that.
-#if !defined(__MAEMO__) && !defined(_WIN32_WCE) && !defined(GP2XWIZ)&& !defined(LINUXMOTO) && !defined(__SYMBIAN32__)
+#if !defined(__MAEMO__) && !defined(_WIN32_WCE) && !defined(GP2XWIZ)&& !defined(LINUXMOTO) && !defined(__SYMBIAN32__) && !defined(DINGUX)
 
 
 #include "backends/platform/sdl/sdl.h"
diff --git a/backends/platform/sdl/sdl.cpp b/backends/platform/sdl/sdl.cpp
index 6686249416..22fc561b0f 100644
--- a/backends/platform/sdl/sdl.cpp
+++ b/backends/platform/sdl/sdl.cpp
@@ -150,7 +150,7 @@ void OSystem_SDL::initBackend() {
 	memset(&_videoMode, 0, sizeof(_videoMode));
 	memset(&_transactionDetails, 0, sizeof(_transactionDetails));
 
-#if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__) && defined(USE_SCALERS)
+#if !defined(_WIN32_WCE) && !defined(DINGUX) && !defined(__SYMBIAN32__) && defined(USE_SCALERS)
 	_videoMode.mode = GFX_DOUBLESIZE;
 	_videoMode.scaleFactor = 2;
 	_videoMode.aspectRatioCorrection = ConfMan.getBool("aspect_ratio");