Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2015 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at: |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | * |
| 17 | ***************************************************************************** |
| 18 | * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| 19 | */ |
| 20 | /** |
| 21 | ******************************************************************************* |
| 22 | * @file |
| 23 | * ih264e_me.c |
| 24 | * |
| 25 | * @brief |
| 26 | * |
| 27 | * |
| 28 | * @author |
| 29 | * Ittiam |
| 30 | * |
| 31 | * @par List of Functions: |
| 32 | * - |
| 33 | * |
| 34 | * @remarks |
| 35 | * None |
| 36 | * |
| 37 | ******************************************************************************* |
| 38 | */ |
| 39 | |
| 40 | /*****************************************************************************/ |
| 41 | /* File Includes */ |
| 42 | /*****************************************************************************/ |
| 43 | |
| 44 | /* System include files */ |
| 45 | #include <stdio.h> |
| 46 | #include <assert.h> |
| 47 | #include <limits.h> |
| 48 | #include <string.h> |
| 49 | |
| 50 | /* User include files */ |
| 51 | #include "ime_typedefs.h" |
| 52 | #include "ime_distortion_metrics.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 53 | #include "ime_defs.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 54 | #include "ime_structs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 55 | #include "ime.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 56 | #include "ime_macros.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 57 | #include "ime_statistics.h" |
| 58 | |
| 59 | /** |
| 60 | ******************************************************************************* |
| 61 | * |
| 62 | * @brief Diamond Search |
| 63 | * |
| 64 | * @par Description: |
| 65 | * This function computes the sad at vertices of several layers of diamond grid |
| 66 | * at a time. The number of layers of diamond grid that would be evaluated is |
| 67 | * configurable.The function computes the sad at vertices of a diamond grid. If |
| 68 | * the sad at the center of the diamond grid is lesser than the sad at any other |
| 69 | * point of the diamond grid, the function marks the candidate Mb partition as |
| 70 | * mv. |
| 71 | * |
| 72 | * @param[in] ps_mb_part |
| 73 | * pointer to current mb partition ctxt with respect to ME |
| 74 | * |
| 75 | * @param[in] ps_me_ctxt |
| 76 | * pointer to me context |
| 77 | * |
| 78 | * @param[in] u4_lambda_motion |
| 79 | * lambda motion |
| 80 | * |
| 81 | * @param[in] u4_enable_fast_sad |
| 82 | * enable/disable fast sad computation |
| 83 | * |
| 84 | * @returns mv pair & corresponding distortion and cost |
| 85 | * |
| 86 | * @remarks Diamond Srch, radius is 1 |
| 87 | * |
| 88 | ******************************************************************************* |
| 89 | */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 90 | void ime_diamond_search_16x16(me_ctxt_t *ps_me_ctxt, WORD32 i4_reflist) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 91 | { |
| 92 | /* MB partition info */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 93 | mb_part_ctxt *ps_mb_part = &ps_me_ctxt->as_mb_part[i4_reflist]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 94 | |
| 95 | /* lagrange parameter */ |
| 96 | UWORD32 u4_lambda_motion = ps_me_ctxt->u4_lambda_motion; |
| 97 | |
| 98 | /* srch range*/ |
| 99 | WORD32 i4_srch_range_n = ps_me_ctxt->i4_srch_range_n; |
| 100 | WORD32 i4_srch_range_s = ps_me_ctxt->i4_srch_range_s; |
| 101 | WORD32 i4_srch_range_e = ps_me_ctxt->i4_srch_range_e; |
| 102 | WORD32 i4_srch_range_w = ps_me_ctxt->i4_srch_range_w; |
| 103 | |
| 104 | /* enabled fast sad computation */ |
| 105 | // UWORD32 u4_enable_fast_sad = ps_me_ctxt->u4_enable_fast_sad; |
| 106 | |
| 107 | /* pointer to src macro block */ |
| 108 | UWORD8 *pu1_curr_mb = ps_me_ctxt->pu1_src_buf_luma; |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 109 | UWORD8 *pu1_ref_mb = ps_me_ctxt->apu1_ref_buf_luma[i4_reflist]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 110 | |
| 111 | /* strides */ |
| 112 | WORD32 i4_src_strd = ps_me_ctxt->i4_src_strd; |
| 113 | WORD32 i4_ref_strd = ps_me_ctxt->i4_rec_strd; |
| 114 | |
| 115 | /* least cost */ |
| 116 | WORD32 i4_cost_least = ps_mb_part->i4_mb_cost; |
| 117 | |
| 118 | /* least sad */ |
| 119 | WORD32 i4_distortion_least = ps_mb_part->i4_mb_distortion; |
| 120 | |
| 121 | /* mv pair */ |
| 122 | WORD16 i2_mvx, i2_mvy; |
| 123 | |
| 124 | /* mv bits */ |
| 125 | UWORD8 *pu1_mv_bits = ps_me_ctxt->pu1_mv_bits; |
| 126 | |
| 127 | /* temp var */ |
| 128 | WORD32 i4_cost[4]; |
| 129 | WORD32 i4_sad[4]; |
| 130 | UWORD8 *pu1_ref; |
| 131 | WORD16 i2_mv_u_x, i2_mv_u_y; |
| 132 | |
| 133 | /* Diamond search Iteration Max Cnt */ |
| 134 | UWORD32 u4_num_layers = ps_me_ctxt->u4_num_layers; |
| 135 | |
| 136 | /* temp var */ |
| 137 | // UWORD8 u1_prev_jump = NONE; |
| 138 | // UWORD8 u1_curr_jump = NONE; |
| 139 | // UWORD8 u1_next_jump; |
| 140 | // WORD32 mask_arr[5] = {15, 13, 14, 7, 11}; |
| 141 | // WORD32 mask; |
| 142 | // UWORD8 *apu1_ref[4]; |
| 143 | // WORD32 i, cnt; |
| 144 | // WORD32 dia[4][2] = {{-1, 0}, {1, 0}, {0, -1}, {0, 1}}; |
| 145 | |
| 146 | /* mv with best sad during initial evaluation */ |
| 147 | i2_mvx = ps_mb_part->s_mv_curr.i2_mvx; |
| 148 | i2_mvy = ps_mb_part->s_mv_curr.i2_mvy; |
| 149 | |
| 150 | i2_mv_u_x = i2_mvx; |
| 151 | i2_mv_u_y = i2_mvy; |
| 152 | |
| 153 | while (u4_num_layers--) |
| 154 | { |
| 155 | /* FIXME : is this the write way to check for out of bounds ? */ |
| 156 | if ( (i2_mvx - 1 < i4_srch_range_w) || |
| 157 | (i2_mvx + 1 > i4_srch_range_e) || |
| 158 | (i2_mvy - 1 < i4_srch_range_n) || |
| 159 | (i2_mvy + 1 > i4_srch_range_s) ) |
| 160 | { |
| 161 | break; |
| 162 | } |
| 163 | |
| 164 | pu1_ref = pu1_ref_mb + i2_mvx + (i2_mvy * i4_ref_strd); |
| 165 | |
| 166 | ps_me_ctxt->pf_ime_compute_sad4_diamond(pu1_ref, |
| 167 | pu1_curr_mb, |
| 168 | i4_ref_strd, |
| 169 | i4_src_strd, |
| 170 | i4_sad); |
| 171 | |
| 172 | DEBUG_SAD_HISTOGRAM_ADD(i4_sad[0], 2); |
| 173 | DEBUG_SAD_HISTOGRAM_ADD(i4_sad[1], 2); |
| 174 | DEBUG_SAD_HISTOGRAM_ADD(i4_sad[2], 2); |
| 175 | DEBUG_SAD_HISTOGRAM_ADD(i4_sad[3], 2); |
| 176 | |
| 177 | /* compute cost */ |
| 178 | i4_cost[0] = i4_sad[0] + u4_lambda_motion * ( pu1_mv_bits[ ((i2_mvx - 1) << 2) - ps_mb_part->s_mv_pred.i2_mvx] |
| 179 | + pu1_mv_bits[(i2_mvy << 2) - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 180 | i4_cost[1] = i4_sad[1] + u4_lambda_motion * ( pu1_mv_bits[ ((i2_mvx + 1) << 2) - ps_mb_part->s_mv_pred.i2_mvx] |
| 181 | + pu1_mv_bits[(i2_mvy << 2) - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 182 | i4_cost[2] = i4_sad[2] + u4_lambda_motion * ( pu1_mv_bits[ (i2_mvx << 2) - ps_mb_part->s_mv_pred.i2_mvx] |
| 183 | + pu1_mv_bits[((i2_mvy - 1) << 2) - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 184 | i4_cost[3] = i4_sad[3] + u4_lambda_motion * ( pu1_mv_bits[ (i2_mvx << 2) - ps_mb_part->s_mv_pred.i2_mvx] |
| 185 | + pu1_mv_bits[((i2_mvy + 1) << 2) - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 186 | |
| 187 | |
| 188 | if (i4_cost_least > i4_cost[0]) |
| 189 | { |
| 190 | i4_cost_least = i4_cost[0]; |
| 191 | i4_distortion_least = i4_sad[0]; |
| 192 | |
| 193 | i2_mv_u_x = (i2_mvx - 1); |
| 194 | i2_mv_u_y = i2_mvy; |
| 195 | } |
| 196 | |
| 197 | if (i4_cost_least > i4_cost[1]) |
| 198 | { |
| 199 | i4_cost_least = i4_cost[1]; |
| 200 | i4_distortion_least = i4_sad[1]; |
| 201 | |
| 202 | i2_mv_u_x = (i2_mvx + 1); |
| 203 | i2_mv_u_y = i2_mvy; |
| 204 | } |
| 205 | |
| 206 | if (i4_cost_least > i4_cost[2]) |
| 207 | { |
| 208 | i4_cost_least = i4_cost[2]; |
| 209 | i4_distortion_least = i4_sad[2]; |
| 210 | |
| 211 | i2_mv_u_x = i2_mvx; |
| 212 | i2_mv_u_y = i2_mvy - 1; |
| 213 | } |
| 214 | |
| 215 | if (i4_cost_least > i4_cost[3]) |
| 216 | { |
| 217 | i4_cost_least = i4_cost[3]; |
| 218 | i4_distortion_least = i4_sad[3]; |
| 219 | |
| 220 | i2_mv_u_x = i2_mvx; |
| 221 | i2_mv_u_y = i2_mvy + 1; |
| 222 | } |
| 223 | |
| 224 | if( (i2_mv_u_x == i2_mvx) && (i2_mv_u_y == i2_mvy)) |
| 225 | { |
| 226 | ps_mb_part->u4_exit = 1; |
| 227 | break; |
| 228 | } |
| 229 | else |
| 230 | { |
| 231 | i2_mvx = i2_mv_u_x; |
| 232 | i2_mvy = i2_mv_u_y; |
| 233 | } |
| 234 | |
| 235 | |
| 236 | } |
| 237 | |
| 238 | if (i4_cost_least < ps_mb_part->i4_mb_cost) |
| 239 | { |
| 240 | ps_mb_part->i4_mb_cost = i4_cost_least; |
| 241 | ps_mb_part->i4_mb_distortion = i4_distortion_least; |
| 242 | ps_mb_part->s_mv_curr.i2_mvx = i2_mvx; |
| 243 | ps_mb_part->s_mv_curr.i2_mvy = i2_mvy; |
| 244 | } |
| 245 | |
| 246 | } |
| 247 | |
| 248 | |
| 249 | /** |
| 250 | ******************************************************************************* |
| 251 | * |
| 252 | * @brief This function computes the best motion vector among the tentative mv |
| 253 | * candidates chosen. |
| 254 | * |
| 255 | * @par Description: |
| 256 | * This function determines the position in the search window at which the motion |
| 257 | * estimation should begin in order to minimise the number of search iterations. |
| 258 | * |
| 259 | * @param[in] ps_mb_part |
| 260 | * pointer to current mb partition ctxt with respect to ME |
| 261 | * |
| 262 | * @param[in] u4_lambda_motion |
| 263 | * lambda motion |
| 264 | * |
| 265 | * @param[in] u4_fast_flag |
| 266 | * enable/disable fast sad computation |
| 267 | * |
| 268 | * @returns mv pair & corresponding distortion and cost |
| 269 | * |
| 270 | * @remarks none |
| 271 | * |
| 272 | ******************************************************************************* |
| 273 | */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 274 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 275 | void ime_evaluate_init_srchposn_16x16 |
| 276 | ( |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 277 | me_ctxt_t *ps_me_ctxt, |
| 278 | WORD32 i4_reflist |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 279 | ) |
| 280 | { |
| 281 | UWORD32 u4_lambda_motion = ps_me_ctxt->u4_lambda_motion; |
| 282 | |
| 283 | /* candidate mv cnt */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 284 | UWORD32 u4_num_candidates = ps_me_ctxt->u4_num_candidates[i4_reflist]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 285 | |
| 286 | /* list of candidate mvs */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 287 | ime_mv_t *ps_mv_list = ps_me_ctxt->as_mv_init_search[i4_reflist]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 288 | |
| 289 | /* pointer to src macro block */ |
| 290 | UWORD8 *pu1_curr_mb = ps_me_ctxt->pu1_src_buf_luma; |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 291 | UWORD8 *pu1_ref_mb = ps_me_ctxt->apu1_ref_buf_luma[i4_reflist]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 292 | |
| 293 | /* strides */ |
| 294 | WORD32 i4_src_strd = ps_me_ctxt->i4_src_strd; |
| 295 | WORD32 i4_ref_strd = ps_me_ctxt->i4_rec_strd; |
| 296 | |
| 297 | /* enabled fast sad computation */ |
| 298 | UWORD32 u4_enable_fast_sad = ps_me_ctxt->u4_enable_fast_sad; |
| 299 | |
| 300 | /* SAD(distortion metric) of an 8x8 block */ |
| 301 | WORD32 i4_mb_distortion; |
| 302 | |
| 303 | /* cost = distortion + u4_lambda_motion * rate */ |
| 304 | WORD32 i4_mb_cost, i4_mb_cost_least = INT_MAX, i4_distortion_least = INT_MAX; |
| 305 | |
| 306 | /* mb partitions info */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 307 | mb_part_ctxt *ps_mb_part = &(ps_me_ctxt->as_mb_part[i4_reflist]); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 308 | |
| 309 | /* mv bits */ |
| 310 | UWORD8 *pu1_mv_bits = ps_me_ctxt->pu1_mv_bits; |
| 311 | |
| 312 | /* temp var */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 313 | UWORD32 i, j; |
| 314 | WORD32 i4_srch_pos_idx = 0; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 315 | UWORD8 *pu1_ref = NULL; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 316 | |
| 317 | /* Carry out a search using each of the motion vector pairs identified above as predictors. */ |
| 318 | /* TODO : Just like Skip, Do we need to add any bias to zero mv as well */ |
| 319 | for(i = 0; i < u4_num_candidates; i++) |
| 320 | { |
| 321 | /* compute sad */ |
| 322 | WORD32 c_sad = 1; |
| 323 | |
| 324 | for(j = 0; j < i; j++ ) |
| 325 | { |
| 326 | if ( (ps_mv_list[i].i2_mvx == ps_mv_list[j].i2_mvx) && |
| 327 | (ps_mv_list[i].i2_mvy == ps_mv_list[j].i2_mvy) ) |
| 328 | { |
| 329 | c_sad = 0; |
| 330 | break; |
| 331 | } |
| 332 | } |
| 333 | if(c_sad) |
| 334 | { |
| 335 | /* adjust ref pointer */ |
| 336 | pu1_ref = pu1_ref_mb + ps_mv_list[i].i2_mvx + (ps_mv_list[i].i2_mvy * i4_ref_strd); |
| 337 | |
| 338 | /* compute distortion */ |
| 339 | ps_me_ctxt->pf_ime_compute_sad_16x16[u4_enable_fast_sad](pu1_curr_mb, pu1_ref, i4_src_strd, i4_ref_strd, i4_mb_cost_least, &i4_mb_distortion); |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 340 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 341 | DEBUG_SAD_HISTOGRAM_ADD(i4_mb_distortion, 3); |
| 342 | /* compute cost */ |
| 343 | i4_mb_cost = i4_mb_distortion + u4_lambda_motion * ( pu1_mv_bits[ (ps_mv_list[i].i2_mvx << 2) - ps_mb_part->s_mv_pred.i2_mvx] |
| 344 | + pu1_mv_bits[(ps_mv_list[i].i2_mvy << 2) - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 345 | |
| 346 | if (i4_mb_cost < i4_mb_cost_least) |
| 347 | { |
| 348 | i4_mb_cost_least = i4_mb_cost; |
| 349 | |
| 350 | i4_distortion_least = i4_mb_distortion; |
| 351 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 352 | i4_srch_pos_idx = i; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 353 | } |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | if (i4_mb_cost_least < ps_mb_part->i4_mb_cost) |
| 358 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 359 | ps_mb_part->i4_srch_pos_idx = i4_srch_pos_idx; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 360 | ps_mb_part->i4_mb_cost = i4_mb_cost_least; |
| 361 | ps_mb_part->i4_mb_distortion = i4_distortion_least; |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 362 | ps_mb_part->s_mv_curr.i2_mvx = ps_mv_list[i4_srch_pos_idx].i2_mvx; |
| 363 | ps_mb_part->s_mv_curr.i2_mvy = ps_mv_list[i4_srch_pos_idx].i2_mvy; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 364 | } |
| 365 | } |
| 366 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 367 | /** |
| 368 | ******************************************************************************* |
| 369 | * |
| 370 | * @brief Searches for the best matching full pixel predictor within the search |
| 371 | * range |
| 372 | * |
| 373 | * @par Description: |
| 374 | * This function begins by computing the mv predict vector for the current mb. |
| 375 | * This is used for cost computations. Further basing on the algo. chosen, it |
| 376 | * looks through a set of candidate vectors that best represent the mb a least |
| 377 | * cost and returns this information. |
| 378 | * |
| 379 | * @param[in] ps_proc |
| 380 | * pointer to current proc ctxt |
| 381 | * |
| 382 | * @param[in] ps_me_ctxt |
| 383 | * pointer to me context |
| 384 | * |
| 385 | * @returns mv pair & corresponding distortion and cost |
| 386 | * |
| 387 | * @remarks none |
| 388 | * |
| 389 | ******************************************************************************* |
| 390 | */ |
| 391 | void ime_full_pel_motion_estimation_16x16 |
| 392 | ( |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 393 | me_ctxt_t *ps_me_ctxt, |
| 394 | WORD32 i4_ref_list |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 395 | ) |
| 396 | { |
| 397 | /* mb part info */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 398 | mb_part_ctxt *ps_mb_part = &ps_me_ctxt->as_mb_part[i4_ref_list]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 399 | |
| 400 | /******************************************************************/ |
| 401 | /* Modify Search range about initial candidate instead of zero mv */ |
| 402 | /******************************************************************/ |
| 403 | /* |
| 404 | * FIXME: The motion vectors in a way can become unbounded. It may so happen that |
| 405 | * MV might exceed the limit of the profile configured. |
| 406 | */ |
| 407 | ps_me_ctxt->i4_srch_range_w = MAX(ps_me_ctxt->i4_srch_range_w, |
| 408 | -ps_me_ctxt->ai2_srch_boundaries[0] + ps_mb_part->s_mv_curr.i2_mvx); |
| 409 | ps_me_ctxt->i4_srch_range_e = MIN(ps_me_ctxt->i4_srch_range_e, |
| 410 | ps_me_ctxt->ai2_srch_boundaries[0] + ps_mb_part->s_mv_curr.i2_mvx); |
| 411 | ps_me_ctxt->i4_srch_range_n = MAX(ps_me_ctxt->i4_srch_range_n, |
| 412 | -ps_me_ctxt->ai2_srch_boundaries[1] + ps_mb_part->s_mv_curr.i2_mvy); |
| 413 | ps_me_ctxt->i4_srch_range_s = MIN(ps_me_ctxt->i4_srch_range_s, |
| 414 | ps_me_ctxt->ai2_srch_boundaries[1] + ps_mb_part->s_mv_curr.i2_mvy); |
| 415 | |
| 416 | /************************************************************/ |
| 417 | /* Traverse about best initial candidate for mv */ |
| 418 | /************************************************************/ |
| 419 | |
| 420 | switch (ps_me_ctxt->u4_me_speed_preset) |
| 421 | { |
| 422 | case DMND_SRCH: |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 423 | ime_diamond_search_16x16(ps_me_ctxt, i4_ref_list); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 424 | break; |
| 425 | default: |
| 426 | assert(0); |
| 427 | break; |
| 428 | } |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 429 | } |
| 430 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 431 | /** |
| 432 | ******************************************************************************* |
| 433 | * |
| 434 | * @brief Searches for the best matching sub pixel predictor within the search |
| 435 | * range |
| 436 | * |
| 437 | * @par Description: |
| 438 | * This function begins by searching across all sub pixel sample points |
| 439 | * around the full pel motion vector. The vector with least cost is chosen as |
| 440 | * the mv for the current mb. If the skip mode is not evaluated while analysing |
| 441 | * the initial search candidates then analyse it here and update the mv. |
| 442 | * |
| 443 | * @param[in] ps_proc |
| 444 | * pointer to current proc ctxt |
| 445 | * |
| 446 | * @param[in] ps_me_ctxt |
| 447 | * pointer to me context |
| 448 | * |
| 449 | * @returns none |
| 450 | * |
| 451 | * @remarks none |
| 452 | * |
| 453 | ******************************************************************************* |
| 454 | */ |
| 455 | void ime_sub_pel_motion_estimation_16x16 |
| 456 | ( |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 457 | me_ctxt_t *ps_me_ctxt, |
| 458 | WORD32 i4_reflist |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 459 | ) |
| 460 | { |
| 461 | /* pointers to src & ref macro block */ |
| 462 | UWORD8 *pu1_curr_mb = ps_me_ctxt->pu1_src_buf_luma; |
| 463 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 464 | /* pointers to ref. half pel planes */ |
| 465 | UWORD8 *pu1_ref_mb_half_x; |
| 466 | UWORD8 *pu1_ref_mb_half_y; |
| 467 | UWORD8 *pu1_ref_mb_half_xy; |
| 468 | |
| 469 | /* pointers to ref. half pel planes */ |
| 470 | UWORD8 *pu1_ref_mb_half_x_temp; |
| 471 | UWORD8 *pu1_ref_mb_half_y_temp; |
| 472 | UWORD8 *pu1_ref_mb_half_xy_temp; |
| 473 | |
| 474 | /* strides */ |
| 475 | WORD32 i4_src_strd = ps_me_ctxt->i4_src_strd; |
| 476 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 477 | WORD32 i4_ref_strd = ps_me_ctxt->u4_subpel_buf_strd; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 478 | |
| 479 | /* mb partitions info */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 480 | mb_part_ctxt *ps_mb_part = &ps_me_ctxt->as_mb_part[i4_reflist]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 481 | |
| 482 | /* SAD(distortion metric) of an mb */ |
| 483 | WORD32 i4_mb_distortion; |
| 484 | WORD32 i4_distortion_least = ps_mb_part->i4_mb_distortion; |
| 485 | |
| 486 | /* cost = distortion + u4_lambda_motion * rate */ |
| 487 | WORD32 i4_mb_cost; |
| 488 | WORD32 i4_mb_cost_least = ps_mb_part->i4_mb_cost; |
| 489 | |
| 490 | /*Best half pel buffer*/ |
| 491 | UWORD8 *pu1_best_hpel_buf = NULL; |
| 492 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 493 | /* mv bits */ |
| 494 | UWORD8 *pu1_mv_bits = ps_me_ctxt->pu1_mv_bits; |
| 495 | |
| 496 | /* Motion vectors in full-pel units */ |
| 497 | WORD16 mv_x, mv_y; |
| 498 | |
| 499 | /* lambda - lagrange constant */ |
| 500 | UWORD32 u4_lambda_motion = ps_me_ctxt->u4_lambda_motion; |
| 501 | |
| 502 | /* Flags to check if half pel points needs to be evaluated */ |
| 503 | /**************************************/ |
| 504 | /* 1 bit for each half pel candidate */ |
| 505 | /* bit 0 - half x = 1, half y = 0 */ |
| 506 | /* bit 1 - half x = -1, half y = 0 */ |
| 507 | /* bit 2 - half x = 0, half y = 1 */ |
| 508 | /* bit 3 - half x = 0, half y = -1 */ |
| 509 | /* bit 4 - half x = 1, half y = 1 */ |
| 510 | /* bit 5 - half x = -1, half y = 1 */ |
| 511 | /* bit 6 - half x = 1, half y = -1 */ |
| 512 | /* bit 7 - half x = -1, half y = -1 */ |
| 513 | /**************************************/ |
| 514 | /* temp var */ |
| 515 | WORD16 i2_mv_u_x, i2_mv_u_y; |
| 516 | WORD32 i, j; |
| 517 | WORD32 ai4_sad[8]; |
| 518 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 519 | WORD32 i4_srch_pos_idx = ps_mb_part->i4_srch_pos_idx; |
| 520 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 521 | i2_mv_u_x = ps_mb_part->s_mv_curr.i2_mvx; |
| 522 | i2_mv_u_y = ps_mb_part->s_mv_curr.i2_mvy; |
| 523 | |
| 524 | /************************************************************/ |
| 525 | /* Evaluate half pel */ |
| 526 | /************************************************************/ |
| 527 | mv_x = ps_mb_part->s_mv_curr.i2_mvx >> 2; |
| 528 | mv_y = ps_mb_part->s_mv_curr.i2_mvy >> 2; |
| 529 | |
| 530 | |
| 531 | /**************************************************************/ |
| 532 | /* ps_me_ctxt->pu1_half_x points to the half pel pixel on the */ |
| 533 | /* left side of full pel */ |
| 534 | /* ps_me_ctxt->pu1_half_y points to the half pel pixel on the */ |
| 535 | /* top side of full pel */ |
| 536 | /* ps_me_ctxt->pu1_half_xy points to the half pel pixel */ |
| 537 | /* on the top left side of full pel */ |
| 538 | /* for the function pf_ime_sub_pel_compute_sad_16x16 the */ |
| 539 | /* default postions are */ |
| 540 | /* ps_me_ctxt->pu1_half_x = right halp_pel */ |
| 541 | /* ps_me_ctxt->pu1_half_y = bottom halp_pel */ |
| 542 | /* ps_me_ctxt->pu1_half_xy = bottom right halp_pel */ |
| 543 | /* Hence corresponding adjustments made here */ |
| 544 | /**************************************************************/ |
| 545 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 546 | pu1_ref_mb_half_x_temp = pu1_ref_mb_half_x = ps_me_ctxt->apu1_subpel_buffs[0] + 1; |
| 547 | pu1_ref_mb_half_y_temp = pu1_ref_mb_half_y = ps_me_ctxt->apu1_subpel_buffs[1] + 1 + i4_ref_strd; |
| 548 | pu1_ref_mb_half_xy_temp = pu1_ref_mb_half_xy = ps_me_ctxt->apu1_subpel_buffs[2] + 1 + i4_ref_strd; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 549 | |
| 550 | ps_me_ctxt->pf_ime_sub_pel_compute_sad_16x16(pu1_curr_mb, pu1_ref_mb_half_x, |
| 551 | pu1_ref_mb_half_y, |
| 552 | pu1_ref_mb_half_xy, |
| 553 | i4_src_strd, i4_ref_strd, |
| 554 | ai4_sad); |
| 555 | |
| 556 | /* Half x plane */ |
| 557 | for(i = 0; i < 2; i++) |
| 558 | { |
| 559 | WORD32 mv_x_tmp = (mv_x << 2) + 2; |
| 560 | WORD32 mv_y_tmp = (mv_y << 2); |
| 561 | |
| 562 | mv_x_tmp -= (i * 4); |
| 563 | |
| 564 | i4_mb_distortion = ai4_sad[i]; |
| 565 | |
| 566 | /* compute cost */ |
| 567 | i4_mb_cost = i4_mb_distortion + u4_lambda_motion * ( pu1_mv_bits[ mv_x_tmp - ps_mb_part->s_mv_pred.i2_mvx] |
| 568 | + pu1_mv_bits[mv_y_tmp - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 569 | |
| 570 | if (i4_mb_cost < i4_mb_cost_least) |
| 571 | { |
| 572 | i4_mb_cost_least = i4_mb_cost; |
| 573 | |
| 574 | i4_distortion_least = i4_mb_distortion; |
| 575 | |
| 576 | i2_mv_u_x = mv_x_tmp; |
| 577 | |
| 578 | i2_mv_u_y = mv_y_tmp; |
| 579 | |
| 580 | #ifndef HP_PL /*choosing whether left or right half_x*/ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 581 | ps_me_ctxt->apu1_subpel_buffs[0] = pu1_ref_mb_half_x_temp - i; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 582 | pu1_best_hpel_buf = pu1_ref_mb_half_x_temp - i; |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 583 | |
| 584 | i4_srch_pos_idx = 0; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 585 | #endif |
| 586 | } |
| 587 | |
| 588 | } |
| 589 | |
| 590 | /* Half y plane */ |
| 591 | for(i = 0; i < 2; i++) |
| 592 | { |
| 593 | WORD32 mv_x_tmp = (mv_x << 2); |
| 594 | WORD32 mv_y_tmp = (mv_y << 2) + 2; |
| 595 | |
| 596 | mv_y_tmp -= (i * 4); |
| 597 | |
| 598 | i4_mb_distortion = ai4_sad[2 + i]; |
| 599 | |
| 600 | /* compute cost */ |
| 601 | i4_mb_cost = i4_mb_distortion + u4_lambda_motion * ( pu1_mv_bits[ mv_x_tmp - ps_mb_part->s_mv_pred.i2_mvx] |
| 602 | + pu1_mv_bits[mv_y_tmp - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 603 | |
| 604 | if (i4_mb_cost < i4_mb_cost_least) |
| 605 | { |
| 606 | i4_mb_cost_least = i4_mb_cost; |
| 607 | |
| 608 | i4_distortion_least = i4_mb_distortion; |
| 609 | |
| 610 | i2_mv_u_x = mv_x_tmp; |
| 611 | |
| 612 | i2_mv_u_y = mv_y_tmp; |
| 613 | |
| 614 | #ifndef HP_PL/*choosing whether top or bottom half_y*/ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 615 | ps_me_ctxt->apu1_subpel_buffs[1] = pu1_ref_mb_half_y_temp - i*(i4_ref_strd); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 616 | pu1_best_hpel_buf = pu1_ref_mb_half_y_temp - i*(i4_ref_strd); |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 617 | |
| 618 | i4_srch_pos_idx = 1; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 619 | #endif |
| 620 | } |
| 621 | |
| 622 | } |
| 623 | |
| 624 | /* Half xy plane */ |
| 625 | for(j = 0; j < 2; j++) |
| 626 | { |
| 627 | for(i = 0; i < 2; i++) |
| 628 | { |
| 629 | WORD32 mv_x_tmp = (mv_x << 2) + 2; |
| 630 | WORD32 mv_y_tmp = (mv_y << 2) + 2; |
| 631 | |
| 632 | mv_x_tmp -= (i * 4); |
| 633 | mv_y_tmp -= (j * 4); |
| 634 | |
| 635 | i4_mb_distortion = ai4_sad[4 + i + 2 * j]; |
| 636 | |
| 637 | /* compute cost */ |
| 638 | i4_mb_cost = i4_mb_distortion + u4_lambda_motion * ( pu1_mv_bits[ mv_x_tmp - ps_mb_part->s_mv_pred.i2_mvx] |
| 639 | + pu1_mv_bits[mv_y_tmp - ps_mb_part->s_mv_pred.i2_mvy] ); |
| 640 | |
| 641 | if (i4_mb_cost < i4_mb_cost_least) |
| 642 | { |
| 643 | i4_mb_cost_least = i4_mb_cost; |
| 644 | |
| 645 | i4_distortion_least = i4_mb_distortion; |
| 646 | |
| 647 | i2_mv_u_x = mv_x_tmp; |
| 648 | |
| 649 | i2_mv_u_y = mv_y_tmp; |
| 650 | |
| 651 | #ifndef HP_PL /*choosing between four half_xy */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 652 | ps_me_ctxt->apu1_subpel_buffs[2] = pu1_ref_mb_half_xy_temp - j*(i4_ref_strd) - i; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 653 | pu1_best_hpel_buf = pu1_ref_mb_half_xy_temp - j*(i4_ref_strd) - i; |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 654 | |
| 655 | i4_srch_pos_idx = 2; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 656 | #endif |
| 657 | } |
| 658 | |
| 659 | } |
| 660 | } |
| 661 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 662 | if (i4_mb_cost_least < ps_mb_part->i4_mb_cost) |
| 663 | { |
| 664 | ps_mb_part->i4_mb_cost = i4_mb_cost_least; |
| 665 | ps_mb_part->i4_mb_distortion = i4_distortion_least; |
| 666 | ps_mb_part->s_mv_curr.i2_mvx = i2_mv_u_x; |
| 667 | ps_mb_part->s_mv_curr.i2_mvy = i2_mv_u_y; |
| 668 | ps_mb_part->pu1_best_hpel_buf = pu1_best_hpel_buf; |
| 669 | ps_mb_part->i4_srch_pos_idx = i4_srch_pos_idx; |
| 670 | } |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 671 | } |
| 672 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 673 | /** |
| 674 | ******************************************************************************* |
| 675 | * |
| 676 | * @brief This function computes cost of skip macroblocks |
| 677 | * |
| 678 | * @par Description: |
| 679 | * |
| 680 | * @param[in] ps_me_ctxt |
| 681 | * pointer to me ctxt |
| 682 | * |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 683 | * |
| 684 | * @returns none |
| 685 | * |
| 686 | * @remarks |
| 687 | * NOTE: while computing the skip cost, do not enable early exit from compute |
| 688 | * sad function because, a negative bias gets added later |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 689 | * Note tha the last ME candidate in me ctxt is taken as skip motion vector |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 690 | * |
| 691 | ******************************************************************************* |
| 692 | */ |
| 693 | void ime_compute_skip_cost |
| 694 | ( |
| 695 | me_ctxt_t *ps_me_ctxt, |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 696 | ime_mv_t *ps_skip_mv, |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 697 | mb_part_ctxt *ps_smb_part_info, |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 698 | UWORD32 u4_use_stat_sad, |
| 699 | WORD32 i4_reflist, |
| 700 | WORD32 i4_is_slice_type_b |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 701 | ) |
| 702 | { |
| 703 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 704 | /* SAD(distortion metric) of an mb */ |
| 705 | WORD32 i4_mb_distortion; |
| 706 | |
| 707 | /* cost = distortion + u4_lambda_motion * rate */ |
| 708 | WORD32 i4_mb_cost; |
| 709 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 710 | /* temp var */ |
| 711 | UWORD8 *pu1_ref = NULL; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 712 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 713 | ime_mv_t s_skip_mv; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 714 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 715 | s_skip_mv.i2_mvx = (ps_skip_mv->i2_mvx +2)>>2; |
| 716 | s_skip_mv.i2_mvy = (ps_skip_mv->i2_mvy +2)>>2; |
| 717 | |
| 718 | /* Check if the skip mv is out of bounds or subpel */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 719 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 720 | /* skip mv */ |
| 721 | ime_mv_t s_clip_skip_mv; |
| 722 | |
| 723 | s_clip_skip_mv.i2_mvx = CLIP3(ps_me_ctxt->i4_srch_range_w, ps_me_ctxt->i4_srch_range_e, s_skip_mv.i2_mvx); |
| 724 | s_clip_skip_mv.i2_mvy = CLIP3(ps_me_ctxt->i4_srch_range_n, ps_me_ctxt->i4_srch_range_s, s_skip_mv.i2_mvy); |
| 725 | |
| 726 | if ((s_clip_skip_mv.i2_mvx != s_skip_mv.i2_mvx) || |
| 727 | (s_clip_skip_mv.i2_mvy != s_skip_mv.i2_mvy) || |
| 728 | (ps_skip_mv->i2_mvx & 0x3) || |
| 729 | (ps_skip_mv->i2_mvy & 0x3)) |
| 730 | { |
| 731 | return ; |
| 732 | } |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 733 | } |
| 734 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 735 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 736 | /* adjust ref pointer */ |
| 737 | pu1_ref = ps_me_ctxt->apu1_ref_buf_luma[i4_reflist] + s_skip_mv.i2_mvx |
| 738 | + (s_skip_mv.i2_mvy * ps_me_ctxt->i4_rec_strd); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 739 | |
| 740 | if(u4_use_stat_sad == 1) |
| 741 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 742 | UWORD32 u4_is_nonzero; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 743 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 744 | ps_me_ctxt->pf_ime_compute_sad_stat_luma_16x16( |
| 745 | ps_me_ctxt->pu1_src_buf_luma, pu1_ref, ps_me_ctxt->i4_src_strd, |
| 746 | ps_me_ctxt->i4_rec_strd, ps_me_ctxt->pu2_sad_thrsh, |
| 747 | &i4_mb_distortion, &u4_is_nonzero); |
| 748 | |
| 749 | if (u4_is_nonzero == 0 || i4_mb_distortion <= ps_me_ctxt->i4_min_sad) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 750 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 751 | ps_me_ctxt->u4_min_sad_reached = 1; /* found min sad */ |
| 752 | ps_me_ctxt->i4_min_sad = (u4_is_nonzero == 0) ? 0 : i4_mb_distortion; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 753 | } |
| 754 | } |
| 755 | else |
| 756 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 757 | ps_me_ctxt->pf_ime_compute_sad_16x16[ps_me_ctxt->u4_enable_fast_sad]( |
| 758 | ps_me_ctxt->pu1_src_buf_luma, pu1_ref, ps_me_ctxt->i4_src_strd, |
| 759 | ps_me_ctxt->i4_rec_strd, INT_MAX, &i4_mb_distortion); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 760 | |
| 761 | if(i4_mb_distortion <= ps_me_ctxt->i4_min_sad) |
| 762 | { |
| 763 | ps_me_ctxt->i4_min_sad = i4_mb_distortion; |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 764 | ps_me_ctxt->u4_min_sad_reached = 1; /* found min sad */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 765 | } |
| 766 | } |
| 767 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 768 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 769 | /* for skip mode cost & distortion are identical |
| 770 | * But we shall add a bias to favor skip mode. |
| 771 | * Doc. JVT B118 Suggests SKIP_BIAS as 16. |
| 772 | * TODO : Empirical analysis of SKIP_BIAS is necessary */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 773 | |
| 774 | i4_mb_cost = i4_mb_distortion - (ps_me_ctxt->u4_lambda_motion * (ps_me_ctxt->i4_skip_bias[0] + ps_me_ctxt->i4_skip_bias[1] * i4_is_slice_type_b)); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 775 | |
| 776 | if (i4_mb_cost <= ps_smb_part_info->i4_mb_cost) |
| 777 | { |
| 778 | ps_smb_part_info->i4_mb_cost = i4_mb_cost; |
| 779 | ps_smb_part_info->i4_mb_distortion = i4_mb_distortion; |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 780 | ps_smb_part_info->s_mv_curr.i2_mvx = s_skip_mv.i2_mvx; |
| 781 | ps_smb_part_info->s_mv_curr.i2_mvy = s_skip_mv.i2_mvy; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 782 | } |
| 783 | } |
| 784 | |