GP2XWIZ: Rename GP2XWIZ backend to GPH.

* This better reflects the supported devices
  from GPH (GamePark Holdings), namely the 
  GP2XWiz, Caanoo and merging in of the old 
  GP2X backend.

svn-id: r52648

1 files changed, 470 insertions, 0 deletions

diff --git a/backends/platform/gph/gph-graphics.cpp b/backends/platform/gph/gph-graphics.cpp
new file mode 100644
index 0000000000..8fada7e40a
--- /dev/null
+++ b/backends/platform/gph/gph-graphics.cpp
@@ -0,0 +1,470 @@
+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "backends/platform/gph/gph-sdl.h"
+
+#include "common/mutex.h"
+#include "graphics/font.h"
+#include "graphics/fontman.h"
+#include "graphics/scaler.h"
+#include "graphics/scaler/aspect.h"
+#include "graphics/scaler/downscaler.h"
+#include "graphics/surface.h"
+
+static const OSystem::GraphicsMode s_supportedGraphicsModes[] = {
+	{"1x", "Fullscreen", GFX_NORMAL},
+	{0, 0, 0}
+};
+
+const OSystem::GraphicsMode *OSystem_GPH::getSupportedGraphicsModes() const {
+	return s_supportedGraphicsModes;
+}
+
+int OSystem_GPH::getDefaultGraphicsMode() const {
+	return GFX_NORMAL;
+}
+
+bool OSystem_GPH::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_GPH::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_GPH::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;
+}
+
+bool OSystem_GPH::loadGFXMode() {
+	if (_videoMode.screenWidth > 320 || _videoMode.screenHeight > 240) {
+		_videoMode.aspectRatioCorrection = false;
+		setGraphicsMode(GFX_HALF);
+		printf("GFX_HALF\n");
+	} else {
+		setGraphicsMode(GFX_NORMAL);
+		printf("GFX_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();
+}
+
+void OSystem_GPH::drawMouse() {
+	if (!_mouseVisible || !_mouseSurface) {
+		_mouseBackup.x = _mouseBackup.y = _mouseBackup.w = _mouseBackup.h = 0;
+		return;
+	}
+
+	SDL_Rect dst;
+	int scale;
+	int width, height;
+	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;
+		width = _videoMode.screenWidth;
+		height = _videoMode.screenHeight;
+		dst.w = _mouseCurState.vW;
+		dst.h = _mouseCurState.vH;
+		hotX = _mouseCurState.vHotX;
+		hotY = _mouseCurState.vHotY;
+	} else {
+		scale = 1;
+		width = _videoMode.overlayWidth;
+		height = _videoMode.overlayHeight;
+		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_GPH::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_GPH::internUpdateScreen() {
+	SDL_Surface *srcSurf, *origSurf;
+	int height, width;
+	ScalerProc *scalerProc;
+	int scale1;
+
+#if defined (DEBUG)
+	assert(_hwscreen != NULL);
+	assert(_hwscreen->map->sw_data != NULL);
+#endif
+
+	// If the shake position changed, fill the dirty area with blackness
+	if (_currentShakePos != _newShakePos ||
+		(_mouseNeedsRedraw && _mouseBackup.y <= _currentShakePos)) {
+		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_GPH::showOverlay() {
+	if (_videoMode.mode == GFX_HALF){
+		_mouseCurState.x = _mouseCurState.x / 2;
+		_mouseCurState.y = _mouseCurState.y / 2;
+	}
+	OSystem_SDL::showOverlay();
+}
+
+void OSystem_GPH::hideOverlay() {
+	if (_videoMode.mode == GFX_HALF){
+		_mouseCurState.x = _mouseCurState.x * 2;
+		_mouseCurState.y = _mouseCurState.y * 2;
+	}
+	OSystem_SDL::hideOverlay();
+}
+
+void OSystem_GPH::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);
+}