libmpeg2/motion_comp_arm.c

   1 /*
   2  * motion_comp_arm.c
   3  * Copyright (C) 2004 AGAWA Koji <i (AT) atty (DOT) jp>
   4  *
   5  * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
   6  * See http://libmpeg2.sourceforge.net/ for updates.
   7  *
   8  * mpeg2dec is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * mpeg2dec is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with mpeg2dec; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include "config.h"
  24
  25 #if ARCH_ARM
  26
  27 #include <inttypes.h>
  28
  29 #include "mpeg2.h"
  30 #include "attributes.h"
  31 #include "mpeg2_internal.h"
  32
  33 #define avg2(a,b)     ((a+b+1)>>1)
  34 #define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
  35
  36 #define predict_o(i)  (ref[i])
  37 #define predict_x(i)  (avg2 (ref[i], ref[i+1]))
  38 #define predict_y(i)  (avg2 (ref[i], (ref+stride)[i]))
  39 #define predict_xy(i) (avg4 (ref[i], ref[i+1], \
  40                              (ref+stride)[i], (ref+stride)[i+1]))
  41
  42 #define put(predictor,i) dest[i] = predictor (i)
  43 #define avg(predictor,i) dest[i] = avg2 (predictor (i), dest[i])
  44
  45 /* mc function template */
  46
  47 #define MC_FUNC(op,xy)                                                  \
  48 static void inline MC_##op##_##xy##_16_c (uint8_t * dest, const uint8_t * ref,  \
  49                                    const int stride, int height)        \
  50 {                                                                       \
  51     do {                                                                \
  52         op (predict_##xy, 0);                                           \
  53         op (predict_##xy, 1);                                           \
  54         op (predict_##xy, 2);                                           \
  55         op (predict_##xy, 3);                                           \
  56         op (predict_##xy, 4);                                           \
  57         op (predict_##xy, 5);                                           \
  58         op (predict_##xy, 6);                                           \
  59         op (predict_##xy, 7);                                           \
  60         op (predict_##xy, 8);                                           \
  61         op (predict_##xy, 9);                                           \
  62         op (predict_##xy, 10);                                          \
  63         op (predict_##xy, 11);                                          \
  64         op (predict_##xy, 12);                                          \
  65         op (predict_##xy, 13);                                          \
  66         op (predict_##xy, 14);                                          \
  67         op (predict_##xy, 15);                                          \
  68         ref += stride;                                                  \
  69         dest += stride;                                                 \
  70     } while (--height);                                         \
  71 }                                                                       \
  72 static void MC_##op##_##xy##_8_c (uint8_t * dest, const uint8_t * ref,  \
  73                                   const int stride, int height)         \
  74 {                                                                       \
  75     do {                                                                \
  76         op (predict_##xy, 0);                                           \
  77         op (predict_##xy, 1);                                           \
  78         op (predict_##xy, 2);                                           \
  79         op (predict_##xy, 3);                                           \
  80         op (predict_##xy, 4);                                           \
  81         op (predict_##xy, 5);                                           \
  82         op (predict_##xy, 6);                                           \
  83         op (predict_##xy, 7);                                           \
  84         ref += stride;                                                  \
  85         dest += stride;                                                 \
  86     } while (--height);                                         \
  87 }                                                                       \
  88 /* definitions of the actual mc functions */
  89
  90 MC_FUNC (avg,o)
  91 MC_FUNC (avg,x)
  92 MC_FUNC (put,y)
  93 MC_FUNC (avg,y)
  94 MC_FUNC (put,xy)
  95 MC_FUNC (avg,xy)
  96
  97
  98 extern void MC_put_o_16_arm (uint8_t * dest, const uint8_t * ref,
  99                              int stride, int height);
 100
 101 extern void MC_put_x_16_arm (uint8_t * dest, const uint8_t * ref,
 102                              int stride, int height);
 103
 104
 105 static void MC_put_y_16_arm (uint8_t * dest, const uint8_t * ref,
 106                               int stride, int height)
 107 {
 108     MC_put_y_16_c(dest, ref, stride, height);
 109 }
 110
 111 static void MC_put_xy_16_arm (uint8_t * dest, const uint8_t * ref,
 112                                int stride, int height)
 113 {
 114     MC_put_xy_16_c(dest, ref, stride, height);
 115 }
 116
 117 extern void MC_put_o_8_arm (uint8_t * dest, const uint8_t * ref,
 118                              int stride, int height);
 119
 120 extern void MC_put_x_8_arm (uint8_t * dest, const uint8_t * ref,
 121                             int stride, int height);
 122
 123 static void MC_put_y_8_arm (uint8_t * dest, const uint8_t * ref,
 124                              int stride, int height)
 125 {
 126     MC_put_y_8_c(dest, ref, stride, height);
 127 }
 128
 129 static void MC_put_xy_8_arm (uint8_t * dest, const uint8_t * ref,
 130                               int stride, int height)
 131 {
 132     MC_put_xy_8_c(dest, ref, stride, height);
 133 }
 134
 135 static void MC_avg_o_16_arm (uint8_t * dest, const uint8_t * ref,
 136                               int stride, int height)
 137 {
 138     MC_avg_o_16_c(dest, ref, stride, height);
 139 }
 140
 141 static void MC_avg_x_16_arm (uint8_t * dest, const uint8_t * ref,
 142                               int stride, int height)
 143 {
 144     MC_avg_x_16_c(dest, ref, stride, height);
 145 }
 146
 147 static void MC_avg_y_16_arm (uint8_t * dest, const uint8_t * ref,
 148                               int stride, int height)
 149 {
 150     MC_avg_y_16_c(dest, ref, stride, height);
 151 }
 152
 153 static void MC_avg_xy_16_arm (uint8_t * dest, const uint8_t * ref,
 154                                int stride, int height)
 155 {
 156     MC_avg_xy_16_c(dest, ref, stride, height);
 157 }
 158
 159 static void MC_avg_o_8_arm (uint8_t * dest, const uint8_t * ref,
 160                              int stride, int height)
 161 {
 162     MC_avg_o_8_c(dest, ref, stride, height);
 163 }
 164
 165 static void MC_avg_x_8_arm (uint8_t * dest, const uint8_t * ref,
 166                              int stride, int height)
 167 {
 168     MC_avg_x_8_c(dest, ref, stride, height);
 169 }
 170
 171 static void MC_avg_y_8_arm (uint8_t * dest, const uint8_t * ref,
 172                              int stride, int height)
 173 {
 174     MC_avg_y_8_c(dest, ref, stride, height);
 175 }
 176
 177 static void MC_avg_xy_8_arm (uint8_t * dest, const uint8_t * ref,
 178                               int stride, int height)
 179 {
 180     MC_avg_xy_8_c(dest, ref, stride, height);
 181 }
 182
 183 MPEG2_MC_EXTERN (arm)
 184
 185 #endif