diff options
Diffstat (limited to 'libmpeg2/motion_comp.c')
| -rw-r--r-- | libmpeg2/motion_comp.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/libmpeg2/motion_comp.c b/libmpeg2/motion_comp.c new file mode 100644 index 0000000000..816335c6dc --- /dev/null +++ b/libmpeg2/motion_comp.c @@ -0,0 +1,125 @@ +/* + * motion_comp.c + * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> + * + * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. + * + * 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 + */ + +#include "config.h" + +#include <stdio.h> +#include <inttypes.h> + +#include "mpeg2_internal.h" +#include "mm_accel.h" + +mc_functions_t mc_functions; + +void motion_comp_init (void) +{ + +#ifdef ARCH_X86 + if (config.flags & MM_ACCEL_X86_MMXEXT) { + fprintf (stderr, "Using MMXEXT for motion compensation\n"); + mc_functions = mc_functions_mmxext; + } else if (config.flags & MM_ACCEL_X86_3DNOW) { + fprintf (stderr, "Using 3DNOW for motion compensation\n"); + mc_functions = mc_functions_3dnow; + } else if (config.flags & MM_ACCEL_X86_MMX) { + fprintf (stderr, "Using MMX for motion compensation\n"); + mc_functions = mc_functions_mmx; + } else +#endif +#ifdef LIBMPEG2_MLIB + if (config.flags & MM_ACCEL_MLIB) { + fprintf (stderr, "Using mlib for motion compensation\n"); + mc_functions = mc_functions_mlib; + } else +#endif + { + fprintf (stderr, "No accelerated motion compensation found\n"); + mc_functions = mc_functions_c; + } +} + +#define avg2(a,b) ((a+b+1)>>1) +#define avg4(a,b,c,d) ((a+b+c+d+2)>>2) + +#define predict_(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) \ +static void MC_##op##_##xy##16_c (uint8_t * dest, uint8_t * ref,\ + 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); \ +} \ +static void MC_##op##_##xy##8_c (uint8_t * dest, uint8_t * ref, \ + 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); \ +} + +// definitions of the actual mc functions + +MC_FUNC (put,) +MC_FUNC (avg,) +MC_FUNC (put,x) +MC_FUNC (avg,x) +MC_FUNC (put,y) +MC_FUNC (avg,y) +MC_FUNC (put,xy) +MC_FUNC (avg,xy) + +MOTION_COMP_EXTERN (c) |