added libvnc/ with RealVNC compatibility fix

[presencevnc] / libvnc / libvncserver / tableinitcmtemplate.c

diff --git a/libvnc/libvncserver/tableinitcmtemplate.c b/libvnc/libvncserver/tableinitcmtemplate.c
new file mode 100755 (executable)
index 0000000..df01b23
--- /dev/null
+++ b/libvnc/libvncserver/tableinitcmtemplate.c
@@ -0,0 +1,84 @@
+/*
+ * tableinitcmtemplate.c - template for initialising lookup tables for
+ * translation from a colour map to true colour.
+ *
+ * This file shouldn't be compiled.  It is included multiple times by
+ * translate.c, each time with a different definition of the macro OUT.
+ * For each value of OUT, this file defines a function which allocates an
+ * appropriately sized lookup table and initialises it.
+ *
+ * I know this code isn't nice to read because of all the macros, but
+ * efficiency is important here.
+ */
+
+/*
+ *  OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>.
+ *  Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge.  
+ *  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.
+ */
+
+#if !defined(OUT)
+#error "This file shouldn't be compiled."
+#error "It is included as part of translate.c"
+#endif
+
+#define OUT_T CONCAT3E(uint,OUT,_t)
+#define SwapOUT(x) CONCAT2E(Swap,OUT(x))
+#define rfbInitColourMapSingleTableOUT \
+                                CONCAT2E(rfbInitColourMapSingleTable,OUT)
+
+static void
+rfbInitColourMapSingleTableOUT(char **table, rfbPixelFormat *in,
+                            rfbPixelFormat *out,rfbColourMap* colourMap)
+{
+    uint32_t i, r, g, b;
+    OUT_T *t;
+    uint32_t nEntries = 1 << in->bitsPerPixel;
+    int shift = colourMap->is16?16:8;
+
+    if (*table) free(*table);
+    *table = (char *)malloc(nEntries * sizeof(OUT_T));
+    t = (OUT_T *)*table;
+
+    for (i = 0; i < nEntries; i++) {
+        r = g = b = 0;
+       if(i < colourMap->count) {
+         if(colourMap->is16) {
+           r = colourMap->data.shorts[3*i+0];
+           g = colourMap->data.shorts[3*i+1];
+           b = colourMap->data.shorts[3*i+2];
+         } else {
+           r = colourMap->data.bytes[3*i+0];
+           g = colourMap->data.bytes[3*i+1];
+           b = colourMap->data.bytes[3*i+2];
+         }
+       }
+        t[i] = ((((r * (1 + out->redMax)) >> shift) << out->redShift) |
+                (((g * (1 + out->greenMax)) >> shift) << out->greenShift) |
+                (((b * (1 + out->blueMax)) >> shift) << out->blueShift));
+#if (OUT != 8)
+        if (out->bigEndian != in->bigEndian) {
+            t[i] = SwapOUT(t[i]);
+        }
+#endif
+    }
+}
+
+#undef OUT_T
+#undef SwapOUT
+#undef rfbInitColourMapSingleTableOUT