85 lines
4.1 KiB
C
85 lines
4.1 KiB
C
|
/*
|
||
|
|
* motion_comp.h
|
||
|
|
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
|
||
|
|
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
|
||
|
|
*
|
||
|
|
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
|
||
|
|
* See http://libmpeg2.sourceforge.net/ for updates.
|
||
|
|
*
|
||
|
|
* mpeg2dec 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.
|
||
|
|
*
|
||
|
|
* mpeg2dec 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#define avg2(a,b) ((a+b+1)>>1)
|
||
|
|
#define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
|
||
|
|
|
||
|
|
#define predict_o(i) (ref[i])
|
||
|
|
#define predict_x(i) (avg2 (ref[i], ref[i+1]))
|
||
|
|
#define predict_y(i) (avg2 (ref[i], (ref+stride)[i]))
|
||
|
|
#define predict_xy(i) (avg4 (ref[i], ref[i+1], \
|
||
|
|
(ref+stride)[i], (ref+stride)[i+1]))
|
||
|
|
|
||
|
|
#define put(predictor,i) dest[i] = predictor (i)
|
||
|
|
#define avg(predictor,i) dest[i] = avg2 (predictor (i), dest[i])
|
||
|
|
|
||
|
|
/* mc function template */
|
||
|
|
#define MC_FUNC(op, xy) \
|
||
|
|
MC_FUNC_16(op, xy) \
|
||
|
|
MC_FUNC_8(op, xy)
|
||
|
|
|
||
|
|
#define MC_FUNC_16(op, xy) \
|
||
|
|
void MC_##op##_##xy##_16 (uint8_t * dest, const uint8_t * ref, \
|
||
|
|
const int stride, int height) \
|
||
|
|
{ \
|
||
|
|
do { \
|
||
|
|
op (predict_##xy, 0); \
|
||
|
|
op (predict_##xy, 1); \
|
||
|
|
op (predict_##xy, 2); \
|
||
|
|
op (predict_##xy, 3); \
|
||
|
|
op (predict_##xy, 4); \
|
||
|
|
op (predict_##xy, 5); \
|
||
|
|
op (predict_##xy, 6); \
|
||
|
|
op (predict_##xy, 7); \
|
||
|
|
op (predict_##xy, 8); \
|
||
|
|
op (predict_##xy, 9); \
|
||
|
|
op (predict_##xy, 10); \
|
||
|
|
op (predict_##xy, 11); \
|
||
|
|
op (predict_##xy, 12); \
|
||
|
|
op (predict_##xy, 13); \
|
||
|
|
op (predict_##xy, 14); \
|
||
|
|
op (predict_##xy, 15); \
|
||
|
|
ref += stride; \
|
||
|
|
dest += stride; \
|
||
|
|
} while (--height); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define MC_FUNC_8(op, xy) \
|
||
|
|
void MC_##op##_##xy##_8 (uint8_t * dest, const uint8_t * ref, \
|
||
|
|
const int stride, int height) \
|
||
|
|
{ \
|
||
|
|
do { \
|
||
|
|
op (predict_##xy, 0); \
|
||
|
|
op (predict_##xy, 1); \
|
||
|
|
op (predict_##xy, 2); \
|
||
|
|
op (predict_##xy, 3); \
|
||
|
|
op (predict_##xy, 4); \
|
||
|
|
op (predict_##xy, 5); \
|
||
|
|
op (predict_##xy, 6); \
|
||
|
|
op (predict_##xy, 7); \
|
||
|
|
ref += stride; \
|
||
|
|
dest += stride; \
|
||
|
|
} while (--height); \
|
||
|
|
}
|