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media/libvpx/vp8/common/reconintra.c@6474c204b198 (annotated)

media/libvpx/vp8/common/reconintra.c

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /*
michael@0 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
michael@0 3 *
michael@0 4 * Use of this source code is governed by a BSD-style license
michael@0 5 * that can be found in the LICENSE file in the root of the source
michael@0 6 * tree. An additional intellectual property rights grant can be found
michael@0 7 * in the file PATENTS. All contributing project authors may
michael@0 8 * be found in the AUTHORS file in the root of the source tree.
michael@0 9 */
michael@0 10
michael@0 11
michael@0 12 #include "vpx_config.h"
michael@0 13 #include "vp8_rtcd.h"
michael@0 14 #include "vpx_mem/vpx_mem.h"
michael@0 15 #include "blockd.h"
michael@0 16
michael@0 17 void vp8_build_intra_predictors_mby_s_c(MACROBLOCKD *x,
michael@0 18 unsigned char * yabove_row,
michael@0 19 unsigned char * yleft,
michael@0 20 int left_stride,
michael@0 21 unsigned char * ypred_ptr,
michael@0 22 int y_stride)
michael@0 23 {
michael@0 24 unsigned char yleft_col[16];
michael@0 25 unsigned char ytop_left = yabove_row[-1];
michael@0 26 int r, c, i;
michael@0 27
michael@0 28 for (i = 0; i < 16; i++)
michael@0 29 {
michael@0 30 yleft_col[i] = yleft[i* left_stride];
michael@0 31 }
michael@0 32
michael@0 33 /* for Y */
michael@0 34 switch (x->mode_info_context->mbmi.mode)
michael@0 35 {
michael@0 36 case DC_PRED:
michael@0 37 {
michael@0 38 int expected_dc;
michael@0 39 int shift;
michael@0 40 int average = 0;
michael@0 41
michael@0 42
michael@0 43 if (x->up_available || x->left_available)
michael@0 44 {
michael@0 45 if (x->up_available)
michael@0 46 {
michael@0 47 for (i = 0; i < 16; i++)
michael@0 48 {
michael@0 49 average += yabove_row[i];
michael@0 50 }
michael@0 51 }
michael@0 52
michael@0 53 if (x->left_available)
michael@0 54 {
michael@0 55
michael@0 56 for (i = 0; i < 16; i++)
michael@0 57 {
michael@0 58 average += yleft_col[i];
michael@0 59 }
michael@0 60
michael@0 61 }
michael@0 62
michael@0 63
michael@0 64
michael@0 65 shift = 3 + x->up_available + x->left_available;
michael@0 66 expected_dc = (average + (1 << (shift - 1))) >> shift;
michael@0 67 }
michael@0 68 else
michael@0 69 {
michael@0 70 expected_dc = 128;
michael@0 71 }
michael@0 72
michael@0 73 /*vpx_memset(ypred_ptr, expected_dc, 256);*/
michael@0 74 for (r = 0; r < 16; r++)
michael@0 75 {
michael@0 76 vpx_memset(ypred_ptr, expected_dc, 16);
michael@0 77 ypred_ptr += y_stride;
michael@0 78 }
michael@0 79 }
michael@0 80 break;
michael@0 81 case V_PRED:
michael@0 82 {
michael@0 83
michael@0 84 for (r = 0; r < 16; r++)
michael@0 85 {
michael@0 86
michael@0 87 ((int *)ypred_ptr)[0] = ((int *)yabove_row)[0];
michael@0 88 ((int *)ypred_ptr)[1] = ((int *)yabove_row)[1];
michael@0 89 ((int *)ypred_ptr)[2] = ((int *)yabove_row)[2];
michael@0 90 ((int *)ypred_ptr)[3] = ((int *)yabove_row)[3];
michael@0 91 ypred_ptr += y_stride;
michael@0 92 }
michael@0 93 }
michael@0 94 break;
michael@0 95 case H_PRED:
michael@0 96 {
michael@0 97
michael@0 98 for (r = 0; r < 16; r++)
michael@0 99 {
michael@0 100
michael@0 101 vpx_memset(ypred_ptr, yleft_col[r], 16);
michael@0 102 ypred_ptr += y_stride;
michael@0 103 }
michael@0 104
michael@0 105 }
michael@0 106 break;
michael@0 107 case TM_PRED:
michael@0 108 {
michael@0 109
michael@0 110 for (r = 0; r < 16; r++)
michael@0 111 {
michael@0 112 for (c = 0; c < 16; c++)
michael@0 113 {
michael@0 114 int pred = yleft_col[r] + yabove_row[ c] - ytop_left;
michael@0 115
michael@0 116 if (pred < 0)
michael@0 117 pred = 0;
michael@0 118
michael@0 119 if (pred > 255)
michael@0 120 pred = 255;
michael@0 121
michael@0 122 ypred_ptr[c] = pred;
michael@0 123 }
michael@0 124
michael@0 125 ypred_ptr += y_stride;
michael@0 126 }
michael@0 127
michael@0 128 }
michael@0 129 break;
michael@0 130 case B_PRED:
michael@0 131 case NEARESTMV:
michael@0 132 case NEARMV:
michael@0 133 case ZEROMV:
michael@0 134 case NEWMV:
michael@0 135 case SPLITMV:
michael@0 136 case MB_MODE_COUNT:
michael@0 137 break;
michael@0 138 }
michael@0 139 }
michael@0 140
michael@0 141 void vp8_build_intra_predictors_mbuv_s_c(MACROBLOCKD *x,
michael@0 142 unsigned char * uabove_row,
michael@0 143 unsigned char * vabove_row,
michael@0 144 unsigned char * uleft,
michael@0 145 unsigned char * vleft,
michael@0 146 int left_stride,
michael@0 147 unsigned char * upred_ptr,
michael@0 148 unsigned char * vpred_ptr,
michael@0 149 int pred_stride)
michael@0 150 {
michael@0 151 unsigned char uleft_col[8];
michael@0 152 unsigned char utop_left = uabove_row[-1];
michael@0 153 unsigned char vleft_col[8];
michael@0 154 unsigned char vtop_left = vabove_row[-1];
michael@0 155
michael@0 156 int i, j;
michael@0 157
michael@0 158 for (i = 0; i < 8; i++)
michael@0 159 {
michael@0 160 uleft_col[i] = uleft [i* left_stride];
michael@0 161 vleft_col[i] = vleft [i* left_stride];
michael@0 162 }
michael@0 163
michael@0 164 switch (x->mode_info_context->mbmi.uv_mode)
michael@0 165 {
michael@0 166 case DC_PRED:
michael@0 167 {
michael@0 168 int expected_udc;
michael@0 169 int expected_vdc;
michael@0 170 int shift;
michael@0 171 int Uaverage = 0;
michael@0 172 int Vaverage = 0;
michael@0 173
michael@0 174 if (x->up_available)
michael@0 175 {
michael@0 176 for (i = 0; i < 8; i++)
michael@0 177 {
michael@0 178 Uaverage += uabove_row[i];
michael@0 179 Vaverage += vabove_row[i];
michael@0 180 }
michael@0 181 }
michael@0 182
michael@0 183 if (x->left_available)
michael@0 184 {
michael@0 185 for (i = 0; i < 8; i++)
michael@0 186 {
michael@0 187 Uaverage += uleft_col[i];
michael@0 188 Vaverage += vleft_col[i];
michael@0 189 }
michael@0 190 }
michael@0 191
michael@0 192 if (!x->up_available && !x->left_available)
michael@0 193 {
michael@0 194 expected_udc = 128;
michael@0 195 expected_vdc = 128;
michael@0 196 }
michael@0 197 else
michael@0 198 {
michael@0 199 shift = 2 + x->up_available + x->left_available;
michael@0 200 expected_udc = (Uaverage + (1 << (shift - 1))) >> shift;
michael@0 201 expected_vdc = (Vaverage + (1 << (shift - 1))) >> shift;
michael@0 202 }
michael@0 203
michael@0 204
michael@0 205 /*vpx_memset(upred_ptr,expected_udc,64);*/
michael@0 206 /*vpx_memset(vpred_ptr,expected_vdc,64);*/
michael@0 207 for (i = 0; i < 8; i++)
michael@0 208 {
michael@0 209 vpx_memset(upred_ptr, expected_udc, 8);
michael@0 210 vpx_memset(vpred_ptr, expected_vdc, 8);
michael@0 211 upred_ptr += pred_stride;
michael@0 212 vpred_ptr += pred_stride;
michael@0 213 }
michael@0 214 }
michael@0 215 break;
michael@0 216 case V_PRED:
michael@0 217 {
michael@0 218 for (i = 0; i < 8; i++)
michael@0 219 {
michael@0 220 vpx_memcpy(upred_ptr, uabove_row, 8);
michael@0 221 vpx_memcpy(vpred_ptr, vabove_row, 8);
michael@0 222 upred_ptr += pred_stride;
michael@0 223 vpred_ptr += pred_stride;
michael@0 224 }
michael@0 225
michael@0 226 }
michael@0 227 break;
michael@0 228 case H_PRED:
michael@0 229 {
michael@0 230 for (i = 0; i < 8; i++)
michael@0 231 {
michael@0 232 vpx_memset(upred_ptr, uleft_col[i], 8);
michael@0 233 vpx_memset(vpred_ptr, vleft_col[i], 8);
michael@0 234 upred_ptr += pred_stride;
michael@0 235 vpred_ptr += pred_stride;
michael@0 236 }
michael@0 237 }
michael@0 238
michael@0 239 break;
michael@0 240 case TM_PRED:
michael@0 241 {
michael@0 242 for (i = 0; i < 8; i++)
michael@0 243 {
michael@0 244 for (j = 0; j < 8; j++)
michael@0 245 {
michael@0 246 int predu = uleft_col[i] + uabove_row[j] - utop_left;
michael@0 247 int predv = vleft_col[i] + vabove_row[j] - vtop_left;
michael@0 248
michael@0 249 if (predu < 0)
michael@0 250 predu = 0;
michael@0 251
michael@0 252 if (predu > 255)
michael@0 253 predu = 255;
michael@0 254
michael@0 255 if (predv < 0)
michael@0 256 predv = 0;
michael@0 257
michael@0 258 if (predv > 255)
michael@0 259 predv = 255;
michael@0 260
michael@0 261 upred_ptr[j] = predu;
michael@0 262 vpred_ptr[j] = predv;
michael@0 263 }
michael@0 264
michael@0 265 upred_ptr += pred_stride;
michael@0 266 vpred_ptr += pred_stride;
michael@0 267 }
michael@0 268
michael@0 269 }
michael@0 270 break;
michael@0 271 case B_PRED:
michael@0 272 case NEARESTMV:
michael@0 273 case NEARMV:
michael@0 274 case ZEROMV:
michael@0 275 case NEWMV:
michael@0 276 case SPLITMV:
michael@0 277 case MB_MODE_COUNT:
michael@0 278 break;
michael@0 279 }
michael@0 280 }

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