1 /* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18 #ifndef _VLC_ENCODE_INLINE_H_ 19 #define _VLC_ENCODE_INLINE_H_ 20 21 #if !defined(PV_ARM_GCC_V5) && !defined(PV_ARM_GCC_V4) 22 23 __inline Int zero_run_search(UInt *bitmapzz, Short *dataBlock, RunLevelBlock *RLB, Int nc) 24 { 25 Int idx, run, level, j; 26 UInt end, match; 27 28 idx = 0; 29 j = 0; 30 run = 0; 31 match = 1 << 31; 32 if (nc > 32) 33 end = 1; 34 else 35 end = 1 << (32 - nc); 36 37 while (match >= end) 38 { 39 if ((match&bitmapzz[0]) == 0) 40 { 41 run++; 42 j++; 43 match >>= 1; 44 } 45 else 46 { 47 match >>= 1; 48 level = dataBlock[j]; 49 dataBlock[j] = 0; /* reset output */ 50 j++; 51 if (level < 0) 52 { 53 RLB->level[idx] = -level; 54 RLB->s[idx] = 1; 55 RLB->run[idx] = run; 56 run = 0; 57 idx++; 58 } 59 else 60 { 61 RLB->level[idx] = level; 62 RLB->s[idx] = 0; 63 RLB->run[idx] = run; 64 run = 0; 65 idx++; 66 } 67 } 68 } 69 nc -= 32; 70 if (nc > 0) 71 { 72 match = 1 << 31; 73 end = 1 << (32 - nc); 74 while (match >= end) 75 { 76 if ((match&bitmapzz[1]) == 0) 77 { 78 run++; 79 j++; 80 match >>= 1; 81 } 82 else 83 { 84 match >>= 1; 85 level = dataBlock[j]; 86 dataBlock[j] = 0; /* reset output */ 87 j++; 88 if (level < 0) 89 { 90 RLB->level[idx] = -level; 91 RLB->s[idx] = 1; 92 RLB->run[idx] = run; 93 run = 0; 94 idx++; 95 } 96 else 97 { 98 RLB->level[idx] = level; 99 RLB->s[idx] = 0; 100 RLB->run[idx] = run; 101 run = 0; 102 idx++; 103 } 104 } 105 } 106 } 107 108 return idx; 109 } 110 111 #elif defined(__CC_ARM) /* only work with arm v5 */ 112 113 __inline Int zero_run_search(UInt *bitmapzz, Short *dataBlock, RunLevelBlock *RLB, Int nc) 114 { 115 OSCL_UNUSED_ARG(nc); 116 Int idx, run, level, j; 117 UInt end, match; 118 Int zzorder; 119 120 idx = 0; 121 run = 0; 122 j = -1; 123 __asm 124 { 125 ldr match, [bitmapzz] 126 clz run, match 127 } 128 129 zzorder = 0; 130 131 while (run < 32) 132 { 133 __asm 134 { 135 mov end, #0x80000000 136 mov end, end, lsr run /* mask*/ 137 bic match, match, end /* remove it from bitmap */ 138 mov run, run, lsl #1 /* 05/09/02 */ 139 ldrsh level, [dataBlock, run] /* load data */ 140 strh zzorder, [dataBlock, run] /* reset output */ 141 add j, j, #1 142 rsb run, j, run, lsr #1 /* delta run */ 143 add j, j, run /* current position */ 144 } 145 if (level < 0) 146 { 147 RLB->level[idx] = -level; 148 RLB->s[idx] = 1; 149 RLB->run[idx] = run; 150 run = 0; 151 idx++; 152 } 153 else 154 { 155 RLB->level[idx] = level; 156 RLB->s[idx] = 0; 157 RLB->run[idx] = run; 158 run = 0; 159 idx++; 160 } 161 __asm 162 { 163 clz run, match 164 } 165 } 166 __asm 167 { 168 ldr match, [bitmapzz, #4] 169 clz run, match 170 } 171 172 while (run < 32) 173 { 174 __asm 175 { 176 mov end, #0x80000000 177 mov end, end, lsr run /* mask*/ 178 bic match, match, end /* remove it from bitmap */ 179 add run, run, #32 /* current position */ 180 mov run, run, lsl #1 /* 09/02/05 */ 181 ldrsh level, [dataBlock, run] /* load data */ 182 strh zzorder, [dataBlock, run] /* reset output */ 183 add j, j, #1 184 rsb run, j, run, lsr #1 /* delta run */ 185 add j, j, run /* current position */ 186 } 187 if (level < 0) 188 { 189 RLB->level[idx] = -level; 190 RLB->s[idx] = 1; 191 RLB->run[idx] = run; 192 run = 0; 193 idx++; 194 } 195 else 196 { 197 RLB->level[idx] = level; 198 RLB->s[idx] = 0; 199 RLB->run[idx] = run; 200 run = 0; 201 idx++; 202 } 203 __asm 204 { 205 clz run, match 206 } 207 } 208 209 return idx; 210 } 211 212 #elif ( defined(PV_ARM_GCC_V4) || defined(PV_ARM_GCC_V5) ) /* ARM GNU COMPILER */ 213 214 __inline Int m4v_enc_clz(UInt temp) 215 { 216 register Int rb; 217 register UInt ra = (UInt)temp; 218 219 asm volatile("clz %0, %1" 220 : "=&r"(rb) 221 : "r"(ra) 222 ); 223 224 return (rb); 225 } 226 227 __inline Int zero_run_search(UInt *bitmapzz, Short *dataBlock, RunLevelBlock *RLB, Int nc) 228 { 229 OSCL_UNUSED_ARG(nc); 230 Int idx, run, level = 0, j; 231 UInt end = 0, match; 232 Int zzorder; 233 234 idx = 0; 235 run = 0; 236 j = -1; 237 match = *bitmapzz; 238 run = m4v_enc_clz(match); 239 240 zzorder = 0; 241 242 while (run < 32) 243 { 244 asm volatile("mov %0, #0x80000000\n\t" 245 "mov %0, %0, lsr %1\n\t" 246 "bic %2, %2, %0\n\t" 247 "mov %1, %1, lsl #1\n\t" 248 "ldrsh %3, [%6, %1]\n\t" 249 "strh %5, [%6, %1]\n\t" 250 "add %4, %4, #1\n\t" 251 "rsb %1, %4, %1, lsr #1\n\t" 252 "add %4, %4, %1" 253 : "+r"(end), "+r"(run), "+r"(match), "=r"(level), "+r"(j) 254 : "r"(zzorder), "r"(dataBlock)); 255 if (level < 0) 256 { 257 RLB->level[idx] = -level; 258 RLB->s[idx] = 1; 259 RLB->run[idx] = run; 260 run = 0; 261 idx++; 262 } 263 else 264 { 265 RLB->level[idx] = level; 266 RLB->s[idx] = 0; 267 RLB->run[idx] = run; 268 run = 0; 269 idx++; 270 } 271 run = m4v_enc_clz(match); 272 } 273 match = bitmapzz[1]; 274 run = m4v_enc_clz(match); 275 276 while (run < 32) 277 { 278 asm volatile("mov %0, #0x80000000\n\t" 279 "mov %0, %0, lsr %1\n\t" 280 "bic %2, %2, %0\n\t" 281 "add %1, %1, #32\n\t" 282 "mov %1, %1, lsl #1\n\t" 283 "ldrsh %3, [%6, %1]\n\t" 284 "strh %5, [%6, %1]\n\t" 285 "add %4, %4, #1\n\t" 286 "rsb %1, %4, %1, lsr #1\n\t" 287 "add %4, %4, %1" 288 : "+r"(end), "+r"(run), "+r"(match), "+r"(level), "+r"(j) 289 : "r"(zzorder), "r"(dataBlock)); 290 if (level < 0) 291 { 292 RLB->level[idx] = -level; 293 RLB->s[idx] = 1; 294 RLB->run[idx] = run; 295 run = 0; 296 idx++; 297 } 298 else 299 { 300 RLB->level[idx] = level; 301 RLB->s[idx] = 0; 302 RLB->run[idx] = run; 303 run = 0; 304 idx++; 305 } 306 run = m4v_enc_clz(match); 307 } 308 309 return idx; 310 } 311 312 #endif 313 314 #endif // _VLC_ENCODE_INLINE_H_ 315 316 317
