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Diffstat (limited to 'k9decmpeg/motion_comp.cpp')
| -rwxr-xr-x | k9decmpeg/motion_comp.cpp | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/k9decmpeg/motion_comp.cpp b/k9decmpeg/motion_comp.cpp new file mode 100755 index 0000000..11b478b --- /dev/null +++ b/k9decmpeg/motion_comp.cpp @@ -0,0 +1,130 @@ +/* + * motion_comp.c + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "config.h" + +#include "k9common.h" + +#include "mpeg2.h" +#include "attributes.h" +#include "mpeg2_internal.h" + +mpeg2_mc_t mpeg2_mc; + +void mpeg2_mc_init (uint32_t accel) +{ +#ifdef ARCH_X86 + if (accel & MPEG2_ACCEL_X86_MMXEXT) + mpeg2_mc = mpeg2_mc_mmxext; + else if (accel & MPEG2_ACCEL_X86_3DNOW) + mpeg2_mc = mpeg2_mc_3dnow; + else if (accel & MPEG2_ACCEL_X86_MMX) + mpeg2_mc = mpeg2_mc_mmx; + else +#endif +#ifdef ARCH_PPC + if (accel & MPEG2_ACCEL_PPC_ALTIVEC) + mpeg2_mc = mpeg2_mc_altivec; + else +#endif +#ifdef ARCH_ALPHA + if (accel & MPEG2_ACCEL_ALPHA) + mpeg2_mc = mpeg2_mc_alpha; + else +#endif +#ifdef ARCH_SPARC + if (accel & MPEG2_ACCEL_SPARC_VIS) + mpeg2_mc = mpeg2_mc_vis; + else +#endif + mpeg2_mc = mpeg2_mc_c; +} + +#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) \ +static void MC_##op##_##xy##_16_c (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); \ +} \ +static void MC_##op##_##xy##_8_c (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); \ +} + +/* definitions of the actual mc functions */ + +MC_FUNC (put,o) +MC_FUNC (avg,o) +MC_FUNC (put,x) +MC_FUNC (avg,x) +MC_FUNC (put,y) +MC_FUNC (avg,y) +MC_FUNC (put,xy) +MC_FUNC (avg,xy) + +MPEG2_MC_EXTERN (c) |