From f4b5a723b06b25babe201b0a97bdeebc716f5bba Mon Sep 17 00:00:00 2001 From: Michael Sevakis Date: Sat, 14 Apr 2007 16:35:44 +0000 Subject: mpeg2dec in mpegplayer: Do a little code slashing and organizing. Much more to come I think. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13159 a1c6a512-1295-4272-9138-f99709370657 --- apps/plugins/mpegplayer/motion_comp.h | 84 +++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 apps/plugins/mpegplayer/motion_comp.h (limited to 'apps/plugins/mpegplayer/motion_comp.h') diff --git a/apps/plugins/mpegplayer/motion_comp.h b/apps/plugins/mpegplayer/motion_comp.h new file mode 100644 index 0000000000..2823cc6da1 --- /dev/null +++ b/apps/plugins/mpegplayer/motion_comp.h @@ -0,0 +1,84 @@ +/* + * motion_comp.h + * Copyright (C) 2000-2003 Michel Lespinasse + * Copyright (C) 1999-2000 Aaron Holtzman + * + * 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); \ + } -- cgit v1.2.3