mirror of
https://github.com/mpv-player/mpv
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126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/*
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* motion_comp.c
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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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*
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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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#include "config.h"
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#include <stdio.h>
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#include <inttypes.h>
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#include "mpeg2_internal.h"
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#include "mm_accel.h"
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mc_functions_t mc_functions;
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void motion_comp_init (void)
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{
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#ifdef ARCH_X86
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if (config.flags & MM_ACCEL_X86_MMXEXT) {
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fprintf (stderr, "Using MMXEXT for motion compensation\n");
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mc_functions = mc_functions_mmxext;
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} else if (config.flags & MM_ACCEL_X86_3DNOW) {
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fprintf (stderr, "Using 3DNOW for motion compensation\n");
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mc_functions = mc_functions_3dnow;
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} else if (config.flags & MM_ACCEL_X86_MMX) {
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fprintf (stderr, "Using MMX for motion compensation\n");
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mc_functions = mc_functions_mmx;
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} else
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#endif
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#ifdef LIBMPEG2_MLIB
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if (config.flags & MM_ACCEL_MLIB) {
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fprintf (stderr, "Using mlib for motion compensation\n");
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mc_functions = mc_functions_mlib;
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} else
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#endif
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{
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fprintf (stderr, "No accelerated motion compensation found\n");
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mc_functions = mc_functions_c;
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}
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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_(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], (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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static void MC_##op##_##xy##16_c (uint8_t * dest, uint8_t * ref,\
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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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static void MC_##op##_##xy##8_c (uint8_t * dest, uint8_t * ref, \
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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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// definitions of the actual mc functions
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MC_FUNC (put,)
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MC_FUNC (avg,)
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MC_FUNC (put,x)
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MC_FUNC (avg,x)
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MC_FUNC (put,y)
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MC_FUNC (avg,y)
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MC_FUNC (put,xy)
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MC_FUNC (avg,xy)
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MOTION_COMP_EXTERN (c)
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