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authorJohannes Schickel2010-10-13 03:57:44 +0000
committerJohannes Schickel2010-10-13 03:57:44 +0000
commit75e8452b6e6a2bf4fb2f588aa00b428a60d873b5 (patch)
treef29541d55309487a94bd1d38e8b53bb3dde9aec6 /engines/sword25/gfx/image/renderedimage.cpp
parent48ee83b88957dab86bc763e9ef21a70179fa8679 (diff)
parente9f50882ea5b6beeefa994040be9d3bab6a1f107 (diff)
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OPENGL: Merged from trunk, from rev 52105 to 53396.
This includes an rather hacky attempt to merge all the recent gp2x backend changes into the branch. I suppose the gp2x backend and probably all new backends, i.e. gph, dingux etc., might not compile anymore. Since I have no way of testing those it would be nice if porters could look into getting those up to speed in this branch. svn-id: r53399
Diffstat (limited to 'engines/sword25/gfx/image/renderedimage.cpp')
-rw-r--r--engines/sword25/gfx/image/renderedimage.cpp398
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diff --git a/engines/sword25/gfx/image/renderedimage.cpp b/engines/sword25/gfx/image/renderedimage.cpp
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+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+/*
+ * This code is based on Broken Sword 2.5 engine
+ *
+ * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
+ *
+ * Licensed under GNU GPL v2
+ *
+ */
+
+// -----------------------------------------------------------------------------
+// INCLUDES
+// -----------------------------------------------------------------------------
+
+#include "sword25/package/packagemanager.h"
+#include "sword25/gfx/image/imageloader.h"
+#include "sword25/gfx/image/renderedimage.h"
+
+#include "common/system.h"
+
+namespace Sword25 {
+
+#define BS_LOG_PREFIX "RENDEREDIMAGE"
+
+// -----------------------------------------------------------------------------
+// CONSTRUCTION / DESTRUCTION
+// -----------------------------------------------------------------------------
+
+RenderedImage::RenderedImage(const Common::String &filename, bool &result) :
+ _data(0),
+ _width(0),
+ _height(0) {
+ result = false;
+
+ PackageManager *pPackage = static_cast<PackageManager *>(Kernel::GetInstance()->GetService("package"));
+ BS_ASSERT(pPackage);
+
+ _backSurface = (static_cast<GraphicEngine *>(Kernel::GetInstance()->GetService("gfx")))->getSurface();
+
+ // Datei laden
+ byte *pFileData;
+ uint fileSize;
+ if (!(pFileData = (byte *)pPackage->getFile(filename, &fileSize))) {
+ BS_LOG_ERRORLN("File \"%s\" could not be loaded.", filename.c_str());
+ return;
+ }
+
+ // Bildeigenschaften bestimmen
+ GraphicEngine::COLOR_FORMATS colorFormat;
+ int pitch;
+ if (!ImageLoader::ExtractImageProperties(pFileData, fileSize, colorFormat, _width, _height)) {
+ BS_LOG_ERRORLN("Could not read image properties.");
+ delete[] pFileData;
+ return;
+ }
+
+ // Das Bild dekomprimieren
+ if (!ImageLoader::LoadImage(pFileData, fileSize, GraphicEngine::CF_ARGB32, _data, _width, _height, pitch)) {
+ BS_LOG_ERRORLN("Could not decode image.");
+ delete[] pFileData;
+ return;
+ }
+
+ // Dateidaten freigeben
+ delete[] pFileData;
+
+ _doCleanup = true;
+
+ result = true;
+ return;
+}
+
+// -----------------------------------------------------------------------------
+
+RenderedImage::RenderedImage(uint width, uint height, bool &result) :
+ _width(width),
+ _height(height) {
+
+ _data = new byte[width * height * 4];
+ Common::set_to(_data, &_data[width * height * 4], 0);
+
+ _backSurface = (static_cast<GraphicEngine *>(Kernel::GetInstance()->GetService("gfx")))->getSurface();
+
+ _doCleanup = true;
+
+ result = true;
+ return;
+}
+
+RenderedImage::RenderedImage() : _width(0), _height(0), _data(0) {
+ _backSurface = (static_cast<GraphicEngine *>(Kernel::GetInstance()->GetService("gfx")))->getSurface();
+
+ _doCleanup = false;
+
+ return;
+}
+
+// -----------------------------------------------------------------------------
+
+RenderedImage::~RenderedImage() {
+ if (_doCleanup)
+ delete[] _data;
+}
+
+// -----------------------------------------------------------------------------
+
+bool RenderedImage::fill(const Common::Rect *pFillRect, uint color) {
+ BS_LOG_ERRORLN("Fill() is not supported.");
+ return false;
+}
+
+// -----------------------------------------------------------------------------
+
+bool RenderedImage::setContent(const byte *pixeldata, uint size, uint offset, uint stride) {
+ // Überprüfen, ob PixelData ausreichend viele Pixel enthält um ein Bild der Größe Width * Height zu erzeugen
+ if (size < static_cast<uint>(_width * _height * 4)) {
+ BS_LOG_ERRORLN("PixelData vector is too small to define a 32 bit %dx%d image.", _width, _height);
+ return false;
+ }
+
+ const byte *in = &pixeldata[offset];
+ byte *out = _data;
+
+ for (int i = 0; i < _height; i++) {
+ memcpy(out, in, _width * 4);
+ out += _width * 4;
+ in += stride;
+ }
+
+ return true;
+}
+
+void RenderedImage::replaceContent(byte *pixeldata, int width, int height) {
+ _width = width;
+ _height = height;
+ _data = pixeldata;
+}
+// -----------------------------------------------------------------------------
+
+uint RenderedImage::getPixel(int x, int y) {
+ BS_LOG_ERRORLN("GetPixel() is not supported. Returning black.");
+ return 0;
+}
+
+// -----------------------------------------------------------------------------
+
+bool RenderedImage::blit(int posX, int posY, int flipping, Common::Rect *pPartRect, uint color, int width, int height) {
+ int ca = (color >> 24) & 0xff;
+
+ // Check if we need to draw anything at all
+ if (ca == 0)
+ return true;
+
+ int cr = (color >> 16) & 0xff;
+ int cg = (color >> 8) & 0xff;
+ int cb = (color >> 0) & 0xff;
+
+ // Compensate for transparency. Since we're coming
+ // down to 255 alpha, we just compensate for the colors here
+ if (ca != 255) {
+ cr = cr * ca >> 8;
+ cg = cg * ca >> 8;
+ cb = cb * ca >> 8;
+ }
+
+ // Create an encapsulating surface for the data
+ Graphics::Surface srcImage;
+ srcImage.bytesPerPixel = 4;
+ srcImage.pitch = _width * 4;
+ srcImage.w = _width;
+ srcImage.h = _height;
+ srcImage.pixels = _data;
+
+ if (pPartRect) {
+ srcImage.pixels = &_data[pPartRect->top * srcImage.pitch + pPartRect->left * 4];
+ srcImage.w = pPartRect->right - pPartRect->left;
+ srcImage.h = pPartRect->bottom - pPartRect->top;
+
+ debug(6, "Blit(%d, %d, %d, [%d, %d, %d, %d], %08x, %d, %d)", posX, posY, flipping,
+ pPartRect->left, pPartRect->top, pPartRect->width(), pPartRect->height(), color, width, height);
+ } else {
+
+ debug(6, "Blit(%d, %d, %d, [%d, %d, %d, %d], %08x, %d, %d)", posX, posY, flipping, 0, 0,
+ srcImage.w, srcImage.h, color, width, height);
+ }
+
+ if (width == -1)
+ width = srcImage.w;
+ if (height == -1)
+ height = srcImage.h;
+
+#ifdef SCALING_TESTING
+ // Hardcode scaling to 66% to test scaling
+ width = width * 2 / 3;
+ height = height * 2 / 3;
+#endif
+
+ Graphics::Surface *img;
+ Graphics::Surface *imgScaled = NULL;
+ byte *savedPixels = NULL;
+ if ((width != srcImage.w) || (height != srcImage.h)) {
+ // Scale the image
+ img = imgScaled = scale(srcImage, width, height);
+ savedPixels = (byte *)img->pixels;
+ } else {
+ img = &srcImage;
+ }
+
+ // Handle off-screen clipping
+ if (posY < 0) {
+ img->h = MAX(0, (int)img->h - -posY);
+ img->pixels = (byte *)img->pixels + img->pitch * -posY;
+ posY = 0;
+ }
+
+ if (posX < 0) {
+ img->w = MAX(0, (int)img->w - -posX);
+ img->pixels = (byte *)img->pixels + (-posX * 4);
+ posX = 0;
+ }
+
+ img->w = CLIP((int)img->w, 0, (int)MAX((int)_backSurface->w - posX, 0));
+ img->h = CLIP((int)img->h, 0, (int)MAX((int)_backSurface->h - posY, 0));
+
+ if ((img->w > 0) && (img->h > 0)) {
+ int xp = 0, yp = 0;
+
+ int inStep = 4;
+ int inoStep = img->pitch;
+ if (flipping & Image::FLIP_V) {
+ inStep = -inStep;
+ xp = img->w - 1;
+ }
+
+ if (flipping & Image::FLIP_H) {
+ inoStep = -inoStep;
+ yp = img->h - 1;
+ }
+
+ byte *ino = (byte *)img->getBasePtr(xp, yp);
+ byte *outo = (byte *)_backSurface->getBasePtr(posX, posY);
+ byte *in, *out;
+
+ for (int i = 0; i < img->h; i++) {
+ out = outo;
+ in = ino;
+ for (int j = 0; j < img->w; j++) {
+ int r = in[0];
+ int g = in[1];
+ int b = in[2];
+ int a = in[3];
+ in += inStep;
+
+ if (ca != 255) {
+ a = a * ca >> 8;
+ }
+
+ switch (a) {
+ case 0: // Full transparency
+ out += 4;
+ break;
+ case 255: // Full opacity
+ if (cr != 255)
+ *out++ = (r * cr) >> 8;
+ else
+ *out++ = r;
+
+ if (cg != 255)
+ *out++ = (g * cg) >> 8;
+ else
+ *out++ = g;
+
+ if (cb != 255)
+ *out++ = (b * cb) >> 8;
+ else
+ *out++ = b;
+
+ *out++ = a;
+ break;
+
+ default: // alpha blending
+ if (cr != 255)
+ *out += ((r - *out) * a * cr) >> 16;
+ else
+ *out += ((r - *out) * a) >> 8;
+ out++;
+ if (cg != 255)
+ *out += ((g - *out) * a * cg) >> 16;
+ else
+ *out += ((g - *out) * a) >> 8;
+ out++;
+ if (cb != 255)
+ *out += ((b - *out) * a * cb) >> 16;
+ else
+ *out += ((b - *out) * a) >> 8;
+ out++;
+ *out = 255;
+ out++;
+ }
+ }
+ outo += _backSurface->pitch;
+ ino += inoStep;
+ }
+
+ g_system->copyRectToScreen((byte *)_backSurface->getBasePtr(posX, posY), _backSurface->pitch, posX, posY,
+ img->w, img->h);
+ }
+
+ if (imgScaled) {
+ imgScaled->pixels = savedPixels;
+ imgScaled->free();
+ delete imgScaled;
+ }
+
+ return true;
+}
+
+/**
+ * Scales a passed surface, creating a new surface with the result
+ * @param srcImage Source image to scale
+ * @param scaleFactor Scale amount. Must be between 0 and 1.0 (but not zero)
+ * @remarks Caller is responsible for freeing the returned surface
+ */
+Graphics::Surface *RenderedImage::scale(const Graphics::Surface &srcImage, int xSize, int ySize) {
+ Graphics::Surface *s = new Graphics::Surface();
+ s->create(xSize, ySize, srcImage.bytesPerPixel);
+
+ int *horizUsage = scaleLine(xSize, srcImage.w);
+ int *vertUsage = scaleLine(ySize, srcImage.h);
+
+ // Loop to create scaled version
+ for (int yp = 0; yp < ySize; ++yp) {
+ const byte *srcP = (const byte *)srcImage.getBasePtr(0, vertUsage[yp]);
+ byte *destP = (byte *)s->getBasePtr(0, yp);
+
+ for (int xp = 0; xp < xSize; ++xp) {
+ const byte *tempSrcP = srcP + (horizUsage[xp] * srcImage.bytesPerPixel);
+ for (int byteCtr = 0; byteCtr < srcImage.bytesPerPixel; ++byteCtr) {
+ *destP++ = *tempSrcP++;
+ }
+ }
+ }
+
+ // Delete arrays and return surface
+ delete[] horizUsage;
+ delete[] vertUsage;
+ return s;
+}
+
+/**
+ * Returns an array indicating which pixels of a source image horizontally or vertically get
+ * included in a scaled image
+ */
+int *RenderedImage::scaleLine(int size, int srcSize) {
+ int scale = 100 * size / srcSize;
+ assert(scale > 0);
+ int *v = new int[size];
+ Common::set_to(v, &v[size], 0);
+
+ int distCtr = 0;
+ int *destP = v;
+ for (int distIndex = 0; distIndex < srcSize; ++distIndex) {
+ distCtr += scale;
+ while (distCtr >= 100) {
+ assert(destP < &v[size]);
+ *destP++ = distIndex;
+ distCtr -= 100;
+ }
+ }
+
+ return v;
+}
+
+} // End of namespace Sword25