Initial import of the work in progress MADE engine

svn-id: r31599

1 files changed, 152 insertions, 0 deletions

diff --git a/engines/made/graphics.cpp b/engines/made/graphics.cpp
new file mode 100644
index 0000000000..76c10d97cc
--- /dev/null
+++ b/engines/made/graphics.cpp
@@ -0,0 +1,152 @@
+/* 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 "common/endian.h"
+
+#include "made/graphics.h"
+
+namespace Made {
+
+void decompressImage(byte *source, Graphics::Surface &surface, uint16 cmdOffs, uint16 pixelOffs, uint16 maskOffs, uint16 lineSize, bool deltaFrame) {
+
+    const int offsets[] = {
+        0, 1, 2, 3,
+        320, 321, 322, 323,
+        640, 641, 642, 643,
+        960, 961, 962, 963
+    };
+
+	uint16 width = surface.w;
+    uint16 height = surface.h;
+
+    byte *cmdBuffer = source + cmdOffs;
+    byte *maskBuffer = source + maskOffs;
+    byte *pixelBuffer = source + pixelOffs;
+
+    byte *destPtr = (byte*)surface.getBasePtr(0, 0);
+
+    //byte lineBuf[320 * 4];
+    byte lineBuf[640 * 4];
+    byte bitBuf[40];
+
+    int bitBufLastOfs = (((lineSize + 1) >> 1) << 1) - 2;
+    int bitBufLastCount = ((width + 3) >> 2) & 7;
+    if (bitBufLastCount == 0)
+        bitBufLastCount = 8;
+
+    while (height > 0) {
+
+        int drawDestOfs = 0;
+
+    	memset(lineBuf, 0, sizeof(lineBuf));
+
+        memcpy(bitBuf, cmdBuffer, lineSize);
+        cmdBuffer += lineSize;
+
+        for (uint16 bitBufOfs = 0; bitBufOfs < lineSize; bitBufOfs += 2) {
+
+            uint16 bits = READ_LE_UINT16(&bitBuf[bitBufOfs]);
+
+            int bitCount;
+            if (bitBufOfs == bitBufLastOfs)
+                bitCount = bitBufLastCount;
+            else
+                bitCount = 8;
+
+            for (int curCmd = 0; curCmd < bitCount; curCmd++) {
+                int cmd = bits & 3;
+                bits >>= 2;
+
+                byte pixels[4];
+                uint32 mask;
+
+                switch (cmd) {
+
+                case 0:
+                    pixels[0] = *pixelBuffer++;
+                    for (int i = 0; i < 16; i++)
+                        lineBuf[drawDestOfs + offsets[i]] = pixels[0];
+                    break;
+
+                case 1:
+                    pixels[0] = *pixelBuffer++;
+                    pixels[1] = *pixelBuffer++;
+                    mask = READ_LE_UINT16(maskBuffer);
+                    maskBuffer += 2;
+                    for (int i = 0; i < 16; i++) {
+                        lineBuf[drawDestOfs + offsets[i]] = pixels[mask & 1];
+                        mask >>= 1;
+                    }
+                    break;
+
+                case 2:
+                    pixels[0] = *pixelBuffer++;
+                    pixels[1] = *pixelBuffer++;
+                    pixels[2] = *pixelBuffer++;
+                    pixels[3] = *pixelBuffer++;
+                    mask = READ_LE_UINT32(maskBuffer);
+                    maskBuffer += 4;
+                    for (int i = 0; i < 16; i++) {
+                        lineBuf[drawDestOfs + offsets[i]] = pixels[mask & 3];
+                        mask >>= 2;
+                    }
+                    break;
+
+                case 3:
+                    if (!deltaFrame) {
+                        // Yes, it reads from maskBuffer here
+                        for (int i = 0; i < 16; i++)
+                            lineBuf[drawDestOfs + offsets[i]] = *maskBuffer++;
+                    }
+                    break;
+
+                }
+
+                drawDestOfs += 4;
+
+            }
+
+        }
+
+        if (deltaFrame) {
+    		for (int y = 0; y < 4 && height > 0; y++, height--) {
+                for (int x = 0; x < width; x++) {
+                    if (lineBuf[x + y * 320] != 0)
+                        *destPtr = lineBuf[x + y * 320];
+                    destPtr++;
+                }
+    		}
+        } else {
+    		for (int y = 0; y < 4 && height > 0; y++, height--) {
+    		    memcpy(destPtr, &lineBuf[y * 320], width);
+    		    destPtr += width;
+    		}
+        }
+
+    }
+
+}
+
+} // End of namespace Made