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revision 1.2, Thu May 2 22:35:41 2002 UTC revision 1.5, Sat Nov 16 23:51:58 2002 UTC
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1  ; Originally provided by Intel at AP-922  ;/*****************************************************************************
2  ; http://developer.intel.com/vtune/cbts/strmsimd/922down.htm  ; *
3  ; (See more app notes at http://developer.intel.com/vtune/cbts/strmsimd/appnotes.htm)  ; *  XVID MPEG-4 VIDEO CODEC
4  ; but in a limited edition.  ; *  mmx version - inverse discrete cosine transformation
5  ; New macro implements a column part for precise iDCT  ; *
6  ; The routine precision now satisfies IEEE standard 1180-1990.  ; *  Initial version provided by Intel at AppNote AP-922
7  ;  ; *  Copyright (C) 1999 Intel Corporation,
8  ; Copyright (c) 2000-2001 Peter Gubanov <peter@elecard.net.ru>  ; *
9  ; Rounding trick Copyright (c) 2000 Michel Lespinasse <walken@zoy.org>  ; *  Modifications
10  ;  ; *  Copyright (c) 2000-2001 Peter Gubanov <peter@elecard.net.ru>
11  ; http://www.elecard.com/peter/idct.html  ; *  Copyright (c) 2000 Michel Lespinasse <walken@zoy.org>
12  ; http://www.linuxvideo.org/mpeg2dec/  ; *
13  ;  ; *  ported to NASM and some minor changes
14    ; *  Copyright (C) 2001 Peter Ross <pross@xvid.org>
15    ; *
16    ; *  This file is part of XviD, a free MPEG-4 video encoder/decoder
17    ; *
18    ; *  XviD is free software; you can redistribute it and/or modify it
19    ; *  under the terms of the GNU General Public License as published by
20    ; *  the Free Software Foundation; either version 2 of the License, or
21    ; *  (at your option) any later version.
22    ; *
23    ; *  This program is distributed in the hope that it will be useful,
24    ; *  but WITHOUT ANY WARRANTY; without even the implied warranty of
25    ; *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
26    ; *  GNU General Public License for more details.
27    ; *
28    ; *  You should have received a copy of the GNU General Public License
29    ; *  along with this program; if not, write to the Free Software
30    ; *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
31    ; *
32    ; *  Under section 8 of the GNU General Public License, the copyright
33    ; *  holders of XVID explicitly forbid distribution in the following
34    ; *  countries:
35    ; *
36    ; *    - Japan
37    ; *    - United States of America
38    ; *
39    ; *  Linking XviD statically or dynamically with other modules is making a
40    ; *  combined work based on XviD.  Thus, the terms and conditions of the
41    ; *  GNU General Public License cover the whole combination.
42    ; *
43    ; *  As a special exception, the copyright holders of XviD give you
44    ; *  permission to link XviD with independent modules that communicate with
45    ; *  XviD solely through the VFW1.1 and DShow interfaces, regardless of the
46    ; *  license terms of these independent modules, and to copy and distribute
47    ; *  the resulting combined work under terms of your choice, provided that
48    ; *  every copy of the combined work is accompanied by a complete copy of
49    ; *  the source code of XviD (the version of XviD used to produce the
50    ; *  combined work), being distributed under the terms of the GNU General
51    ; *  Public License plus this exception.  An independent module is a module
52    ; *  which is not derived from or based on XviD.
53    ; *
54    ; *  Note that people who make modified versions of XviD are not obligated
55    ; *  to grant this special exception for their modified versions; it is
56    ; *  their choice whether to do so.  The GNU General Public License gives
57    ; *  permission to release a modified version without this exception; this
58    ; *  exception also makes it possible to release a modified version which
59    ; *  carries forward this exception.
60    ; *
61    ; * $Id$
62    ; *
63    ; *************************************************************************/
64    
65  ;=============================================================================  ;=============================================================================
66  ;  ;
67  ; These examples contain code fragments for first stage iDCT 8x8  ; These examples contain code fragments for first stage iDCT 8x8
68  ; (for rows) and first stage DCT 8x8 (for columns)  ; (for rows) and first stage DCT 8x8 (for columns)
69  ;  ;
70  ;=============================================================================  ;=============================================================================
 ;  
 ; 04.11.2001  nasm conversion; peter ross <pross@cs.rmit.edu.au>  
 ;  
71    
72  bits 32  bits 32
73    
# Line 44  Line 92 
92  %define SHIFT_FRW_ROW   BITS_FRW_ACC + 17  %define SHIFT_FRW_ROW   BITS_FRW_ACC + 17
93  %define RND_FRW_ROW     262144 * (BITS_FRW_ACC - 1)       ; 1 << (SHIFT_FRW_ROW-1)  %define RND_FRW_ROW     262144 * (BITS_FRW_ACC - 1)       ; 1 << (SHIFT_FRW_ROW-1)
94    
95    %ifdef FORMAT_COFF
96    section .data data
97    %else
98  section .data data align=16  section .data data align=16
99    %endif
100    
101  align 16  align 16
102    
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