86 lines
4.1 KiB
C
86 lines
4.1 KiB
C
/*
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* motion_comp.h
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* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
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* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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* See http://libmpeg2.sourceforge.net/ for updates.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpeg2dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* $Id$
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*/
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#define avg2(a,b) ((a+b+1)>>1)
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#define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
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#define predict_o(i) (ref[i])
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#define predict_x(i) (avg2 (ref[i], ref[i+1]))
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#define predict_y(i) (avg2 (ref[i], (ref+stride)[i]))
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#define predict_xy(i) (avg4 (ref[i], ref[i+1], \
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(ref+stride)[i], (ref+stride)[i+1]))
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#define put(predictor,i) dest[i] = predictor (i)
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#define avg(predictor,i) dest[i] = avg2 (predictor (i), dest[i])
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/* mc function template */
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#define MC_FUNC(op, xy) \
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MC_FUNC_16(op, xy) \
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MC_FUNC_8(op, xy)
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#define MC_FUNC_16(op, xy) \
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void MC_##op##_##xy##_16 (uint8_t * dest, const uint8_t * ref, \
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const int stride, int height) \
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{ \
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do { \
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op (predict_##xy, 0); \
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op (predict_##xy, 1); \
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op (predict_##xy, 2); \
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op (predict_##xy, 3); \
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op (predict_##xy, 4); \
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op (predict_##xy, 5); \
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op (predict_##xy, 6); \
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op (predict_##xy, 7); \
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op (predict_##xy, 8); \
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op (predict_##xy, 9); \
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op (predict_##xy, 10); \
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op (predict_##xy, 11); \
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op (predict_##xy, 12); \
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op (predict_##xy, 13); \
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op (predict_##xy, 14); \
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op (predict_##xy, 15); \
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ref += stride; \
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dest += stride; \
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} while (--height); \
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}
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#define MC_FUNC_8(op, xy) \
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void MC_##op##_##xy##_8 (uint8_t * dest, const uint8_t * ref, \
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const int stride, int height) \
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{ \
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do { \
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op (predict_##xy, 0); \
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op (predict_##xy, 1); \
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op (predict_##xy, 2); \
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op (predict_##xy, 3); \
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op (predict_##xy, 4); \
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op (predict_##xy, 5); \
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op (predict_##xy, 6); \
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op (predict_##xy, 7); \
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ref += stride; \
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dest += stride; \
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} while (--height); \
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}
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