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revision 416, Thu Sep 5 20:42:47 2002 UTC revision 851, Sat Feb 15 15:22:19 2003 UTC
# Line 3  Line 3 
3   *  XVID MPEG-4 VIDEO CODEC   *  XVID MPEG-4 VIDEO CODEC
4   *  - 8bit<->16bit transfer -   *  - 8bit<->16bit transfer -
5   *   *
  *  Copyright(C) 2001-2002 Peter Ross <pross@cs.rmit.edu.au>  
  *  
  *  This program is an implementation of a part of one or more MPEG-4  
  *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending  
  *  to use this software module in hardware or software products are  
  *  advised that its use may infringe existing patents or copyrights, and  
  *  any such use would be at such party's own risk.  The original  
  *  developer of this software module and his/her company, and subsequent  
  *  editors and their companies, will have no liability for use of this  
  *  software or modifications or derivatives thereof.  
  *  
6   *  This program is free software; you can redistribute it and/or modify   *  This program is free software; you can redistribute it and/or modify
7   *  it under the terms of the GNU General Public License as published by   *  it under the terms of the GNU General Public License as published by
8   *  the Free Software Foundation; either version 2 of the License, or   *  the Free Software Foundation; either version 2 of the License, or
# Line 28  Line 17 
17   *  along with this program; if not, write to the Free Software   *  along with this program; if not, write to the Free Software
18   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19   *   *
20   * $Id: mem_transfer.c,v 1.5 2002-09-05 20:42:47 edgomez Exp $   ****************************************************************************/
21    /*****************************************************************************
22     *
23     *  History
24     *
25     *  - 14.06.2002 Changed legal header with the new FSF address
26     *      - 14.04.2002 added transfer_8to16sub2
27     *      - 07.01.2002 merge functions from compensate; rename functions
28     *      - 22.12.2001 transfer_8to8add16 limit fix
29     *      - 07.11.2001 initial version; (c)2001 peter ross <pross@cs.rmit.edu.au>
30     *
31     *  $Id: mem_transfer.c,v 1.9 2003-02-15 15:22:19 edgomez Exp $
32   *   *
33   ****************************************************************************/   ****************************************************************************/
34    
# Line 41  Line 41 
41  TRANSFER_16TO8COPY_PTR transfer_16to8copy;  TRANSFER_16TO8COPY_PTR transfer_16to8copy;
42    
43  TRANSFER_8TO16SUB_PTR  transfer_8to16sub;  TRANSFER_8TO16SUB_PTR  transfer_8to16sub;
44    TRANSFER_8TO16SUBRO_PTR  transfer_8to16subro;
45  TRANSFER_8TO16SUB2_PTR transfer_8to16sub2;  TRANSFER_8TO16SUB2_PTR transfer_8to16sub2;
46  TRANSFER_16TO8ADD_PTR  transfer_16to8add;  TRANSFER_16TO8ADD_PTR  transfer_16to8add;
47    
# Line 145  Line 146 
146  }  }
147    
148    
149    void
150    transfer_8to16subro_c(int16_t * const dct,
151                                            const uint8_t * const cur,
152                                            const uint8_t * ref,
153                                            const uint32_t stride)
154    {
155            uint32_t i, j;
156    
157            for (j = 0; j < 8; j++) {
158                    for (i = 0; i < 8; i++) {
159                            uint8_t c = cur[j * stride + i];
160                            uint8_t r = ref[j * stride + i];
161                            dct[j * 8 + i] = (int16_t) c - (int16_t) r;
162                    }
163            }
164    }
165    
166    
167    
168  /*  /*
169   * C   - the current buffer   * C   - the current buffer
170   * R1  - the 1st reference buffer   * R1  - the 1st reference buffer
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