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 EXPORT |vp8_recon_b_armv6| 13 EXPORT |vp8_recon2b_armv6| 14 EXPORT |vp8_recon4b_armv6| 15 16 AREA |.text|, CODE, READONLY ; name this block of code 17 prd RN r0 18 dif RN r1 19 dst RN r2 20 stride RN r3 21 22 ;void recon_b(unsigned char *pred_ptr, short *diff_ptr, unsigned char *dst_ptr, int stride) 23 ; R0 char* pred_ptr 24 ; R1 short * dif_ptr 25 ; R2 char * dst_ptr 26 ; R3 int stride 27 28 ; Description: 29 ; Loop through the block adding the Pred and Diff together. Clamp and then 30 ; store back into the Dst. 31 32 ; Restrictions : 33 ; all buffers are expected to be 4 byte aligned coming in and 34 ; going out. 35 ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 36 ; 37 ; 38 ; 39 ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 40 |vp8_recon_b_armv6| PROC 41 stmdb sp!, {r4 - r9, lr} 42 43 ;0, 1, 2, 3 44 ldr r4, [prd], #16 ; 3 | 2 | 1 | 0 45 ldr r6, [dif, #0] ; 1 | 0 46 ldr r7, [dif, #4] ; 3 | 2 47 48 pkhbt r8, r6, r7, lsl #16 ; 2 | 0 49 pkhtb r9, r7, r6, asr #16 ; 3 | 1 50 51 uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0 52 uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1 53 54 usat16 r8, #8, r8 55 usat16 r9, #8, r9 56 add dif, dif, #32 57 orr r8, r8, r9, lsl #8 58 59 str r8, [dst], stride 60 61 ;0, 1, 2, 3 62 ldr r4, [prd], #16 ; 3 | 2 | 1 | 0 63 ;; ldr r6, [dif, #8] ; 1 | 0 64 ;; ldr r7, [dif, #12] ; 3 | 2 65 ldr r6, [dif, #0] ; 1 | 0 66 ldr r7, [dif, #4] ; 3 | 2 67 68 pkhbt r8, r6, r7, lsl #16 ; 2 | 0 69 pkhtb r9, r7, r6, asr #16 ; 3 | 1 70 71 uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0 72 uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1 73 74 usat16 r8, #8, r8 75 usat16 r9, #8, r9 76 add dif, dif, #32 77 orr r8, r8, r9, lsl #8 78 79 str r8, [dst], stride 80 81 ;0, 1, 2, 3 82 ldr r4, [prd], #16 ; 3 | 2 | 1 | 0 83 ;; ldr r6, [dif, #16] ; 1 | 0 84 ;; ldr r7, [dif, #20] ; 3 | 2 85 ldr r6, [dif, #0] ; 1 | 0 86 ldr r7, [dif, #4] ; 3 | 2 87 88 pkhbt r8, r6, r7, lsl #16 ; 2 | 0 89 pkhtb r9, r7, r6, asr #16 ; 3 | 1 90 91 uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0 92 uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1 93 94 usat16 r8, #8, r8 95 usat16 r9, #8, r9 96 add dif, dif, #32 97 orr r8, r8, r9, lsl #8 98 99 str r8, [dst], stride 100 101 ;0, 1, 2, 3 102 ldr r4, [prd], #16 ; 3 | 2 | 1 | 0 103 ;; ldr r6, [dif, #24] ; 1 | 0 104 ;; ldr r7, [dif, #28] ; 3 | 2 105 ldr r6, [dif, #0] ; 1 | 0 106 ldr r7, [dif, #4] ; 3 | 2 107 108 pkhbt r8, r6, r7, lsl #16 ; 2 | 0 109 pkhtb r9, r7, r6, asr #16 ; 3 | 1 110 111 uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0 112 uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1 113 114 usat16 r8, #8, r8 115 usat16 r9, #8, r9 116 orr r8, r8, r9, lsl #8 117 118 str r8, [dst], stride 119 120 ldmia sp!, {r4 - r9, pc} 121 122 ENDP ; |recon_b| 123 124 ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 125 ; 126 ; 127 ; 128 ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 129 ; R0 char *pred_ptr 130 ; R1 short *dif_ptr 131 ; R2 char *dst_ptr 132 ; R3 int stride 133 |vp8_recon4b_armv6| PROC 134 stmdb sp!, {r4 - r9, lr} 135 136 mov lr, #4 137 138 recon4b_loop 139 ;0, 1, 2, 3 140 ldr r4, [prd], #4 ; 3 | 2 | 1 | 0 141 ldr r6, [dif, #0] ; 1 | 0 142 ldr r7, [dif, #4] ; 3 | 2 143 144 pkhbt r8, r6, r7, lsl #16 ; 2 | 0 145 pkhtb r9, r7, r6, asr #16 ; 3 | 1 146 147 uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0 148 uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1 149 150 usat16 r8, #8, r8 151 usat16 r9, #8, r9 152 orr r8, r8, r9, lsl #8 153 154 str r8, [dst] 155 156 ;4, 5, 6, 7 157 ldr r4, [prd], #4 158 ;; ldr r6, [dif, #32] 159 ;; ldr r7, [dif, #36] 160 ldr r6, [dif, #8] 161 ldr r7, [dif, #12] 162 163 pkhbt r8, r6, r7, lsl #16 164 pkhtb r9, r7, r6, asr #16 165 166 uxtab16 r8, r8, r4 167 uxtab16 r9, r9, r4, ror #8 168 usat16 r8, #8, r8 169 usat16 r9, #8, r9 170 orr r8, r8, r9, lsl #8 171 172 str r8, [dst, #4] 173 174 ;8, 9, 10, 11 175 ldr r4, [prd], #4 176 ;; ldr r6, [dif, #64] 177 ;; ldr r7, [dif, #68] 178 ldr r6, [dif, #16] 179 ldr r7, [dif, #20] 180 181 pkhbt r8, r6, r7, lsl #16 182 pkhtb r9, r7, r6, asr #16 183 184 uxtab16 r8, r8, r4 185 uxtab16 r9, r9, r4, ror #8 186 usat16 r8, #8, r8 187 usat16 r9, #8, r9 188 orr r8, r8, r9, lsl #8 189 190 str r8, [dst, #8] 191 192 ;12, 13, 14, 15 193 ldr r4, [prd], #4 194 ;; ldr r6, [dif, #96] 195 ;; ldr r7, [dif, #100] 196 ldr r6, [dif, #24] 197 ldr r7, [dif, #28] 198 199 pkhbt r8, r6, r7, lsl #16 200 pkhtb r9, r7, r6, asr #16 201 202 uxtab16 r8, r8, r4 203 uxtab16 r9, r9, r4, ror #8 204 usat16 r8, #8, r8 205 usat16 r9, #8, r9 206 orr r8, r8, r9, lsl #8 207 208 str r8, [dst, #12] 209 210 add dst, dst, stride 211 ;; add dif, dif, #8 212 add dif, dif, #32 213 214 subs lr, lr, #1 215 bne recon4b_loop 216 217 ldmia sp!, {r4 - r9, pc} 218 219 ENDP ; |Recon4B| 220 221 ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 222 ; 223 ; 224 ; 225 ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 226 ; R0 char *pred_ptr 227 ; R1 short *dif_ptr 228 ; R2 char *dst_ptr 229 ; R3 int stride 230 |vp8_recon2b_armv6| PROC 231 stmdb sp!, {r4 - r9, lr} 232 233 mov lr, #4 234 235 recon2b_loop 236 ;0, 1, 2, 3 237 ldr r4, [prd], #4 238 ldr r6, [dif, #0] 239 ldr r7, [dif, #4] 240 241 pkhbt r8, r6, r7, lsl #16 242 pkhtb r9, r7, r6, asr #16 243 244 uxtab16 r8, r8, r4 245 uxtab16 r9, r9, r4, ror #8 246 usat16 r8, #8, r8 247 usat16 r9, #8, r9 248 orr r8, r8, r9, lsl #8 249 250 str r8, [dst] 251 252 ;4, 5, 6, 7 253 ldr r4, [prd], #4 254 ;; ldr r6, [dif, #32] 255 ;; ldr r7, [dif, #36] 256 ldr r6, [dif, #8] 257 ldr r7, [dif, #12] 258 259 pkhbt r8, r6, r7, lsl #16 260 pkhtb r9, r7, r6, asr #16 261 262 uxtab16 r8, r8, r4 263 uxtab16 r9, r9, r4, ror #8 264 usat16 r8, #8, r8 265 usat16 r9, #8, r9 266 orr r8, r8, r9, lsl #8 267 268 str r8, [dst, #4] 269 270 add dst, dst, stride 271 ;; add dif, dif, #8 272 add dif, dif, #16 273 274 subs lr, lr, #1 275 bne recon2b_loop 276 277 ldmia sp!, {r4 - r9, pc} 278 279 ENDP ; |Recon2B| 280 281 END 282
