1 files changed, 67 insertions, 0 deletions
diff --git a/packages/hermes/src/p_cnv.inc b/packages/hermes/src/p_cnv.inc
new file mode 100644
index 0000000000..4db1b3589d
--- /dev/null
+++ b/packages/hermes/src/p_cnv.inc
@@ -0,0 +1,67 @@
+{
+    Free Pascal port of the Hermes C library.
+    Copyright (C) 2001-2003  Nikolay Nikolov (nickysn@users.sourceforge.net)
+    Original C version by Christian Nentwich (c.nentwich@cs.ucl.ac.uk)
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+}
+
+{
+   C converter main loops for the HERMES library
+   Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk)
+   This source code is licensed under the GNU LGPL
+
+   Please refer to the file COPYING.LIB contained in the distribution for
+   licensing conditions
+}
+
+Procedure ConvertP(iface : PHermesConverterInterface); CDecl;
+
+Begin
+  { Simply loop through all scanlines }
+  Repeat
+    iface^.func(iface^.s_pixels, iface^.d_pixels, iface^.d_width, 1);
+
+    Inc(iface^.s_pixels, iface^.s_pitch);
+    Inc(iface^.d_pixels, iface^.d_pitch);
+    Dec(iface^.d_height);
+  Until iface^.d_height = 0;
+End;
+
+Procedure ConvertPStretch(iface : PHermesConverterInterface); CDecl;
+
+Var
+  dx, dy : DWord;
+  y : DWord;
+
+Begin
+  y := 0;
+  dy := (iface^.s_height Shl 16) Div iface^.d_height;
+  dx := (iface^.s_width Shl 16) Div iface^.d_width;
+
+  { We have the increment of y and x on the source surface now let's start }
+  Repeat
+    iface^.func(iface^.s_pixels, iface^.d_pixels, iface^.d_width, dx);
+
+    Inc(iface^.d_pixels, iface^.d_pitch);
+
+    Inc(y, dy);
+
+    { Check how many lines we need to step forward }
+    Inc(iface^.s_pixels, (y Shr 16)*DWord(iface^.s_pitch));
+    y := y And $ffff;
+    Dec(iface^.d_height);
+  Until iface^.d_height = 0;
+End;