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mpeg2dec in mpegplayer: Do a little code slashing and organizing. Much more to come I think.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13159 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2007-04-14 16:35:44 +00:00
parent 32bd59d4f7
commit f4b5a723b0
14 changed files with 273 additions and 866 deletions
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84
apps/plugins/mpegplayer/motion_comp.h Normal file
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/*
* motion_comp.h
* 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., 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); \
}