--- idct.c	2003/06/09 01:19:37	1.6.2.1
+++ idct.c	2004/03/22 22:36:23	1.7
@@ -1,4 +1,28 @@
-/* idct.c, inverse fast discrete cosine transform                           */
+/*****************************************************************************
+ *
+ *  XVID MPEG-4 VIDEO CODEC
+ *  - Inverse DCT  -
+ *
+ *  These routines are from Independent JPEG Group's free JPEG software
+ *  Copyright (C) 1991-1998, Thomas G. Lane (see the file README.IJG)
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * $Id: idct.c,v 1.7 2004/03/22 22:36:23 edgomez Exp $
+ *
+ ****************************************************************************/
 
 /* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */
 
@@ -33,7 +57,7 @@
  * v0.16B22  idct_FAST() renamed to idct_int32()
  *        also merged idct_FAST() into a single function, to help VC++
  *        optimize it.
- *        
+ *
  * v0.14  changed int to long, to avoid confusion when compiling on x86
  *        platform ( in VC++ "int" -> 32bits )
  */
@@ -100,7 +124,7 @@
   X8 = W3*(X6+X7);
   X6 = X8 - (W3-W5)*X6;
   X7 = X8 - (W3+W5)*X7;
-  
+
   /* second stage  */
   X8 = X0 + X1;
   X0 -= X1;
@@ -111,7 +135,7 @@
   X4 -= X6;
   X6 = X5 + X7;
   X5 -= X7;
-  
+
   /* third stage  */
   X7 = X8 + X3;
   X8 -= X3;
@@ -119,7 +143,7 @@
   X0 -= X2;
   X2 = (181*(X4+X5)+128)>>8;
   X4 = (181*(X4-X5)+128)>>8;
-  
+
   /* fourth stage  */
   blk[0] = (X7+X1)>>8;
   blk[1] = (X3+X2)>>8;
@@ -166,7 +190,7 @@
   X8 = W3*(X6+X7) + 4;
   X6 = (X8-(W3-W5)*X6)>>3;
   X7 = (X8-(W3+W5)*X7)>>3;
-  
+
   /* second stage */
   X8 = X0 + X1;
   X0 -= X1;
@@ -177,7 +201,7 @@
   X4 -= X6;
   X6 = X5 + X7;
   X5 -= X7;
-  
+
   /* third stage  */
   X7 = X8 + X3;
   X8 -= X3;
@@ -185,7 +209,7 @@
   X0 -= X2;
   X2 = (181*(X4+X5)+128)>>8;
   X4 = (181*(X4-X5)+128)>>8;
-  
+
   /* fourth stage */
   blk[8*0] = iclp[(X7+X1)>>14];
   blk[8*1] = iclp[(X3+X2)>>14];