1 /* 2 * Copyright (c) 2010 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 11 12 #include "vpx_ports/config.h" 13 #include <math.h> 14 #include "subpixel.h" 15 #include "vpx_ports/mem.h" 16 17 #define BLOCK_HEIGHT_WIDTH 4 18 #define VP8_FILTER_WEIGHT 128 19 #define VP8_FILTER_SHIFT 7 20 21 DECLARE_ALIGNED(16, static const short, sub_pel_filters[8][6]) = 22 { 23 { 0, 0, 128, 0, 0, 0 }, /* note that 1/8 pel positions are just as per alpha -0.5 bicubic */ 24 { 0, -6, 123, 12, -1, 0 }, 25 { 2, -11, 108, 36, -8, 1 }, /* New 1/4 pel 6 tap filter */ 26 { 0, -9, 93, 50, -6, 0 }, 27 { 3, -16, 77, 77, -16, 3 }, /* New 1/2 pel 6 tap filter */ 28 { 0, -6, 50, 93, -9, 0 }, 29 { 1, -8, 36, 108, -11, 2 }, /* New 1/4 pel 6 tap filter */ 30 { 0, -1, 12, 123, -6, 0 }, 31 }; 32 33 34 extern void vp8_filter_block2d_first_pass_armv6 35 ( 36 unsigned char *src_ptr, 37 short *output_ptr, 38 unsigned int src_pixels_per_line, 39 unsigned int output_width, 40 unsigned int output_height, 41 const short *vp8_filter 42 ); 43 44 extern void vp8_filter_block2d_second_pass_armv6 45 ( 46 short *src_ptr, 47 unsigned char *output_ptr, 48 unsigned int output_pitch, 49 unsigned int cnt, 50 const short *vp8_filter 51 ); 52 53 extern void vp8_filter4_block2d_second_pass_armv6 54 ( 55 short *src_ptr, 56 unsigned char *output_ptr, 57 unsigned int output_pitch, 58 unsigned int cnt, 59 const short *vp8_filter 60 ); 61 62 extern void vp8_filter_block2d_first_pass_only_armv6 63 ( 64 unsigned char *src_ptr, 65 unsigned char *output_ptr, 66 unsigned int src_pixels_per_line, 67 unsigned int cnt, 68 unsigned int output_pitch, 69 const short *vp8_filter 70 ); 71 72 73 extern void vp8_filter_block2d_second_pass_only_armv6 74 ( 75 unsigned char *src_ptr, 76 unsigned char *output_ptr, 77 unsigned int src_pixels_per_line, 78 unsigned int cnt, 79 unsigned int output_pitch, 80 const short *vp8_filter 81 ); 82 83 #if HAVE_ARMV6 84 void vp8_sixtap_predict_armv6 85 ( 86 unsigned char *src_ptr, 87 int src_pixels_per_line, 88 int xoffset, 89 int yoffset, 90 unsigned char *dst_ptr, 91 int dst_pitch 92 ) 93 { 94 const short *HFilter; 95 const short *VFilter; 96 DECLARE_ALIGNED_ARRAY(4, short, FData, 12*4); /* Temp data bufffer used in filtering */ 97 98 99 HFilter = sub_pel_filters[xoffset]; /* 6 tap */ 100 VFilter = sub_pel_filters[yoffset]; /* 6 tap */ 101 102 /* Vfilter is null. First pass only */ 103 if (xoffset && !yoffset) 104 { 105 /*vp8_filter_block2d_first_pass_armv6 ( src_ptr, FData+2, src_pixels_per_line, 4, 4, HFilter ); 106 vp8_filter_block2d_second_pass_armv6 ( FData+2, dst_ptr, dst_pitch, 4, VFilter );*/ 107 108 vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 4, dst_pitch, HFilter); 109 } 110 /* Hfilter is null. Second pass only */ 111 else if (!xoffset && yoffset) 112 { 113 vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 4, dst_pitch, VFilter); 114 } 115 else 116 { 117 /* Vfilter is a 4 tap filter */ 118 if (yoffset & 0x1) 119 { 120 vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 4, 7, HFilter); 121 vp8_filter4_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 4, VFilter); 122 } 123 /* Vfilter is 6 tap filter */ 124 else 125 { 126 vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 4, 9, HFilter); 127 vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 4, VFilter); 128 } 129 } 130 } 131 132 #if 0 133 void vp8_sixtap_predict8x4_armv6 134 ( 135 unsigned char *src_ptr, 136 int src_pixels_per_line, 137 int xoffset, 138 int yoffset, 139 unsigned char *dst_ptr, 140 int dst_pitch 141 ) 142 { 143 const short *HFilter; 144 const short *VFilter; 145 DECLARE_ALIGNED_ARRAY(4, short, FData, 16*8); /* Temp data bufffer used in filtering */ 146 147 HFilter = sub_pel_filters[xoffset]; /* 6 tap */ 148 VFilter = sub_pel_filters[yoffset]; /* 6 tap */ 149 150 151 /*if (xoffset && !yoffset) 152 { 153 vp8_filter_block2d_first_pass_only_armv6 ( src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, HFilter ); 154 }*/ 155 /* Hfilter is null. Second pass only */ 156 /*else if (!xoffset && yoffset) 157 { 158 vp8_filter_block2d_second_pass_only_armv6 ( src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, VFilter ); 159 } 160 else 161 { 162 if (yoffset & 0x1) 163 vp8_filter_block2d_first_pass_armv6 ( src_ptr-src_pixels_per_line, FData+1, src_pixels_per_line, 8, 7, HFilter ); 164 else*/ 165 166 vp8_filter_block2d_first_pass_armv6 ( src_ptr-(2*src_pixels_per_line), FData, src_pixels_per_line, 8, 9, HFilter ); 167 168 vp8_filter_block2d_second_pass_armv6 ( FData+2, dst_ptr, dst_pitch, 4, 8, VFilter ); 169 /*}*/ 170 } 171 #endif 172 173 void vp8_sixtap_predict8x8_armv6 174 ( 175 unsigned char *src_ptr, 176 int src_pixels_per_line, 177 int xoffset, 178 int yoffset, 179 unsigned char *dst_ptr, 180 int dst_pitch 181 ) 182 { 183 const short *HFilter; 184 const short *VFilter; 185 DECLARE_ALIGNED_ARRAY(4, short, FData, 16*8); /* Temp data bufffer used in filtering */ 186 187 HFilter = sub_pel_filters[xoffset]; /* 6 tap */ 188 VFilter = sub_pel_filters[yoffset]; /* 6 tap */ 189 190 if (xoffset && !yoffset) 191 { 192 vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, HFilter); 193 } 194 /* Hfilter is null. Second pass only */ 195 else if (!xoffset && yoffset) 196 { 197 vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, VFilter); 198 } 199 else 200 { 201 if (yoffset & 0x1) 202 { 203 vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 8, 11, HFilter); 204 vp8_filter4_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 8, VFilter); 205 } 206 else 207 { 208 vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 8, 13, HFilter); 209 vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 8, VFilter); 210 } 211 } 212 } 213 214 215 void vp8_sixtap_predict16x16_armv6 216 ( 217 unsigned char *src_ptr, 218 int src_pixels_per_line, 219 int xoffset, 220 int yoffset, 221 unsigned char *dst_ptr, 222 int dst_pitch 223 ) 224 { 225 const short *HFilter; 226 const short *VFilter; 227 DECLARE_ALIGNED_ARRAY(4, short, FData, 24*16); /* Temp data bufffer used in filtering */ 228 229 HFilter = sub_pel_filters[xoffset]; /* 6 tap */ 230 VFilter = sub_pel_filters[yoffset]; /* 6 tap */ 231 232 if (xoffset && !yoffset) 233 { 234 vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 16, dst_pitch, HFilter); 235 } 236 /* Hfilter is null. Second pass only */ 237 else if (!xoffset && yoffset) 238 { 239 vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 16, dst_pitch, VFilter); 240 } 241 else 242 { 243 if (yoffset & 0x1) 244 { 245 vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 16, 19, HFilter); 246 vp8_filter4_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 16, VFilter); 247 } 248 else 249 { 250 vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 16, 21, HFilter); 251 vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 16, VFilter); 252 } 253 } 254 255 } 256 #endif 257
