1 /* 2 * Copyright (c) 2016 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 #include <assert.h> 11 #include <stdlib.h> 12 #include "./vpx_dsp_rtcd.h" 13 #include "vpx_ports/mem.h" 14 15 DECLARE_PROTECTED(const int16_t vpx_rv[]) = { 16 8, 5, 2, 2, 8, 12, 4, 9, 8, 3, 0, 3, 9, 0, 0, 0, 8, 3, 14, 17 4, 10, 1, 11, 14, 1, 14, 9, 6, 12, 11, 8, 6, 10, 0, 0, 8, 9, 0, 18 3, 14, 8, 11, 13, 4, 2, 9, 0, 3, 9, 6, 1, 2, 3, 14, 13, 1, 8, 19 2, 9, 7, 3, 3, 1, 13, 13, 6, 6, 5, 2, 7, 11, 9, 11, 8, 7, 3, 20 2, 0, 13, 13, 14, 4, 12, 5, 12, 10, 8, 10, 13, 10, 4, 14, 4, 10, 0, 21 8, 11, 1, 13, 7, 7, 14, 6, 14, 13, 2, 13, 5, 4, 4, 0, 10, 0, 5, 22 13, 2, 12, 7, 11, 13, 8, 0, 4, 10, 7, 2, 7, 2, 2, 5, 3, 4, 7, 23 3, 3, 14, 14, 5, 9, 13, 3, 14, 3, 6, 3, 0, 11, 8, 13, 1, 13, 1, 24 12, 0, 10, 9, 7, 6, 2, 8, 5, 2, 13, 7, 1, 13, 14, 7, 6, 7, 9, 25 6, 10, 11, 7, 8, 7, 5, 14, 8, 4, 4, 0, 8, 7, 10, 0, 8, 14, 11, 26 3, 12, 5, 7, 14, 3, 14, 5, 2, 6, 11, 12, 12, 8, 0, 11, 13, 1, 2, 27 0, 5, 10, 14, 7, 8, 0, 4, 11, 0, 8, 0, 3, 10, 5, 8, 0, 11, 6, 28 7, 8, 10, 7, 13, 9, 2, 5, 1, 5, 10, 2, 4, 3, 5, 6, 10, 8, 9, 29 4, 11, 14, 0, 10, 0, 5, 13, 2, 12, 7, 11, 13, 8, 0, 4, 10, 7, 2, 30 7, 2, 2, 5, 3, 4, 7, 3, 3, 14, 14, 5, 9, 13, 3, 14, 3, 6, 3, 31 0, 11, 8, 13, 1, 13, 1, 12, 0, 10, 9, 7, 6, 2, 8, 5, 2, 13, 7, 32 1, 13, 14, 7, 6, 7, 9, 6, 10, 11, 7, 8, 7, 5, 14, 8, 4, 4, 0, 33 8, 7, 10, 0, 8, 14, 11, 3, 12, 5, 7, 14, 3, 14, 5, 2, 6, 11, 12, 34 12, 8, 0, 11, 13, 1, 2, 0, 5, 10, 14, 7, 8, 0, 4, 11, 0, 8, 0, 35 3, 10, 5, 8, 0, 11, 6, 7, 8, 10, 7, 13, 9, 2, 5, 1, 5, 10, 2, 36 4, 3, 5, 6, 10, 8, 9, 4, 11, 14, 3, 8, 3, 7, 8, 5, 11, 4, 12, 37 3, 11, 9, 14, 8, 14, 13, 4, 3, 1, 2, 14, 6, 5, 4, 4, 11, 4, 6, 38 2, 1, 5, 8, 8, 12, 13, 5, 14, 10, 12, 13, 0, 9, 5, 5, 11, 10, 13, 39 9, 10, 13, 40 }; 41 42 void vpx_post_proc_down_and_across_mb_row_c(unsigned char *src_ptr, 43 unsigned char *dst_ptr, 44 int src_pixels_per_line, 45 int dst_pixels_per_line, int cols, 46 unsigned char *f, int size) { 47 unsigned char *p_src, *p_dst; 48 int row; 49 int col; 50 unsigned char v; 51 unsigned char d[4]; 52 53 assert(size >= 8); 54 assert(cols >= 8); 55 56 for (row = 0; row < size; row++) { 57 /* post_proc_down for one row */ 58 p_src = src_ptr; 59 p_dst = dst_ptr; 60 61 for (col = 0; col < cols; col++) { 62 unsigned char p_above2 = p_src[col - 2 * src_pixels_per_line]; 63 unsigned char p_above1 = p_src[col - src_pixels_per_line]; 64 unsigned char p_below1 = p_src[col + src_pixels_per_line]; 65 unsigned char p_below2 = p_src[col + 2 * src_pixels_per_line]; 66 67 v = p_src[col]; 68 69 if ((abs(v - p_above2) < f[col]) && (abs(v - p_above1) < f[col]) && 70 (abs(v - p_below1) < f[col]) && (abs(v - p_below2) < f[col])) { 71 unsigned char k1, k2, k3; 72 k1 = (p_above2 + p_above1 + 1) >> 1; 73 k2 = (p_below2 + p_below1 + 1) >> 1; 74 k3 = (k1 + k2 + 1) >> 1; 75 v = (k3 + v + 1) >> 1; 76 } 77 78 p_dst[col] = v; 79 } 80 81 /* now post_proc_across */ 82 p_src = dst_ptr; 83 p_dst = dst_ptr; 84 85 p_src[-2] = p_src[-1] = p_src[0]; 86 p_src[cols] = p_src[cols + 1] = p_src[cols - 1]; 87 88 for (col = 0; col < cols; col++) { 89 v = p_src[col]; 90 91 if ((abs(v - p_src[col - 2]) < f[col]) && 92 (abs(v - p_src[col - 1]) < f[col]) && 93 (abs(v - p_src[col + 1]) < f[col]) && 94 (abs(v - p_src[col + 2]) < f[col])) { 95 unsigned char k1, k2, k3; 96 k1 = (p_src[col - 2] + p_src[col - 1] + 1) >> 1; 97 k2 = (p_src[col + 2] + p_src[col + 1] + 1) >> 1; 98 k3 = (k1 + k2 + 1) >> 1; 99 v = (k3 + v + 1) >> 1; 100 } 101 102 d[col & 3] = v; 103 104 if (col >= 2) p_dst[col - 2] = d[(col - 2) & 3]; 105 } 106 107 /* handle the last two pixels */ 108 p_dst[col - 2] = d[(col - 2) & 3]; 109 p_dst[col - 1] = d[(col - 1) & 3]; 110 111 /* next row */ 112 src_ptr += src_pixels_per_line; 113 dst_ptr += dst_pixels_per_line; 114 } 115 } 116 117 void vpx_mbpost_proc_across_ip_c(unsigned char *src, int pitch, int rows, 118 int cols, int flimit) { 119 int r, c, i; 120 121 unsigned char *s = src; 122 unsigned char d[16]; 123 124 for (r = 0; r < rows; r++) { 125 int sumsq = 16; 126 int sum = 0; 127 128 for (i = -8; i < 0; i++) s[i] = s[0]; 129 130 /* 17 avoids valgrind warning - we buffer values in c in d 131 * and only write them when we've read 8 ahead... 132 */ 133 for (i = 0; i < 17; i++) s[i + cols] = s[cols - 1]; 134 135 for (i = -8; i <= 6; i++) { 136 sumsq += s[i] * s[i]; 137 sum += s[i]; 138 d[i + 8] = 0; 139 } 140 141 for (c = 0; c < cols + 8; c++) { 142 int x = s[c + 7] - s[c - 8]; 143 int y = s[c + 7] + s[c - 8]; 144 145 sum += x; 146 sumsq += x * y; 147 148 d[c & 15] = s[c]; 149 150 if (sumsq * 15 - sum * sum < flimit) { 151 d[c & 15] = (8 + sum + s[c]) >> 4; 152 } 153 154 s[c - 8] = d[(c - 8) & 15]; 155 } 156 157 s += pitch; 158 } 159 } 160 161 void vpx_mbpost_proc_down_c(unsigned char *dst, int pitch, int rows, int cols, 162 int flimit) { 163 int r, c, i; 164 165 for (c = 0; c < cols; c++) { 166 unsigned char *s = &dst[c]; 167 int sumsq = 0; 168 int sum = 0; 169 unsigned char d[16]; 170 171 for (i = -8; i < 0; i++) s[i * pitch] = s[0]; 172 173 /* 17 avoids valgrind warning - we buffer values in c in d 174 * and only write them when we've read 8 ahead... 175 */ 176 for (i = 0; i < 17; i++) s[(i + rows) * pitch] = s[(rows - 1) * pitch]; 177 178 for (i = -8; i <= 6; i++) { 179 sumsq += s[i * pitch] * s[i * pitch]; 180 sum += s[i * pitch]; 181 } 182 183 for (r = 0; r < rows + 8; r++) { 184 sumsq += s[7 * pitch] * s[7 * pitch] - s[-8 * pitch] * s[-8 * pitch]; 185 sum += s[7 * pitch] - s[-8 * pitch]; 186 d[r & 15] = s[0]; 187 188 if (sumsq * 15 - sum * sum < flimit) { 189 d[r & 15] = (vpx_rv[(r & 127) + (c & 7)] + sum + s[0]) >> 4; 190 } 191 if (r >= 8) s[-8 * pitch] = d[(r - 8) & 15]; 192 s += pitch; 193 } 194 } 195 } 196
