Initial commit

2020-09-20 12:16:44 +00:00
parent 09a4460ddb
commit 408c005d3e
839 changed files with 190481 additions and 0 deletions
--- a/common/rfb/hextileDecode.h
+++ b/common/rfb/hextileDecode.h
@@ -0,0 +1,111 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This 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 software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+//
+// Hextile decoding function.
+//
+// This file is #included after having set the following macro:
+// BPP                - 8, 16 or 32
+
+#include <rdr/InStream.h>
+#include <rfb/Exception.h>
+#include <rfb/hextileConstants.h>
+
+namespace rfb {
+
+// CONCAT2E concatenates its arguments, expanding them if they are macros
+
+#ifndef CONCAT2E
+#define CONCAT2(a,b) a##b
+#define CONCAT2E(a,b) CONCAT2(a,b)
+#endif
+
+#define PIXEL_T rdr::CONCAT2E(U,BPP)
+#define READ_PIXEL CONCAT2E(readOpaque,BPP)
+#define HEXTILE_DECODE CONCAT2E(hextileDecode,BPP)
+
+static void HEXTILE_DECODE (const Rect& r, rdr::InStream* is,
+                            const PixelFormat& pf,
+                            ModifiablePixelBuffer* pb)
+{
+  Rect t;
+  PIXEL_T bg = 0;
+  PIXEL_T fg = 0;
+  PIXEL_T buf[16 * 16];
+
+  for (t.tl.y = r.tl.y; t.tl.y < r.br.y; t.tl.y += 16) {
+
+    t.br.y = __rfbmin(r.br.y, t.tl.y + 16);
+
+    for (t.tl.x = r.tl.x; t.tl.x < r.br.x; t.tl.x += 16) {
+
+      t.br.x = __rfbmin(r.br.x, t.tl.x + 16);
+
+      int tileType = is->readU8();
+
+      if (tileType & hextileRaw) {
+        is->readBytes(buf, t.area() * (BPP/8));
+        pb->imageRect(pf, t, buf);
+        continue;
+      }
+
+      if (tileType & hextileBgSpecified)
+        bg = is->READ_PIXEL();
+
+      int len = t.area();
+      PIXEL_T* ptr = buf;
+      while (len-- > 0) *ptr++ = bg;
+
+      if (tileType & hextileFgSpecified)
+        fg = is->READ_PIXEL();
+
+      if (tileType & hextileAnySubrects) {
+        int nSubrects = is->readU8();
+
+        for (int i = 0; i < nSubrects; i++) {
+
+          if (tileType & hextileSubrectsColoured)
+            fg = is->READ_PIXEL();
+
+          int xy = is->readU8();
+          int wh = is->readU8();
+
+          int x = ((xy >> 4) & 15);
+          int y = (xy & 15);
+          int w = ((wh >> 4) & 15) + 1;
+          int h = (wh & 15) + 1;
+          if (x + w > 16 || y + h > 16) {
+            throw rfb::Exception("HEXTILE_DECODE: Hextile out of bounds");
+          }
+          PIXEL_T* ptr = buf + y * t.width() + x;
+          int rowAdd = t.width() - w;
+          while (h-- > 0) {
+            int len = w;
+            while (len-- > 0) *ptr++ = fg;
+            ptr += rowAdd;
+          }
+        }
+      }
+      pb->imageRect(pf, t, buf);
+    }
+  }
+}
+
+#undef PIXEL_T
+#undef READ_PIXEL
+#undef HEXTILE_DECODE
+}