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 | ******************************************************************************* |
| 23 | * @file |
| 24 | * ih264e_intra_modes_eval.c |
| 25 | * |
| 26 | * @brief |
| 27 | * This file contains definitions of routines that perform rate distortion |
| 28 | * analysis on a macroblock if they are to be coded as intra. |
| 29 | * |
| 30 | * @author |
| 31 | * ittiam |
| 32 | * |
| 33 | * @par List of Functions: |
| 34 | * - ih264e_derive_neighbor_availability_of_mbs() |
| 35 | * - ih264e_derive_ngbr_avbl_of_mb_partitions() |
| 36 | * - ih264e_evaluate_intra16x16_modes_for_least_cost_rdoptoff() |
| 37 | * - ih264e_evaluate_intra8x8_modes_for_least_cost_rdoptoff() |
| 38 | * - ih264e_evaluate_intra4x4_modes_for_least_cost_rdoptoff() |
| 39 | * - ih264e_evaluate_intra4x4_modes_for_least_cost_rdopton() |
| 40 | * - ih264e_evaluate_chroma_intra8x8_modes_for_least_cost_rdoptoff() |
| 41 | * - ih264e_evaluate_intra16x16_modes() |
| 42 | * - ih264e_evaluate_intra4x4_modes() |
| 43 | * - ih264e_evaluate_intra_chroma_modes() |
| 44 | * |
| 45 | * @remarks |
| 46 | * None |
| 47 | * |
| 48 | ******************************************************************************* |
| 49 | */ |
| 50 | |
| 51 | /*****************************************************************************/ |
| 52 | /* File Includes */ |
| 53 | /*****************************************************************************/ |
| 54 | |
| 55 | /* System include files */ |
| 56 | #include <stdio.h> |
| 57 | #include <string.h> |
| 58 | #include <limits.h> |
| 59 | #include <assert.h> |
| 60 | |
| 61 | /* User include files */ |
| 62 | #include "ih264e_config.h" |
| 63 | #include "ih264_typedefs.h" |
| 64 | #include "ih264e_defs.h" |
| 65 | #include "iv2.h" |
| 66 | #include "ive2.h" |
| 67 | #include "ih264_debug.h" |
| 68 | #include "ih264_defs.h" |
| 69 | #include "ih264_macros.h" |
| 70 | #include "ih264_intra_pred_filters.h" |
| 71 | #include "ih264_structs.h" |
| 72 | #include "ih264_common_tables.h" |
| 73 | #include "ih264_trans_quant_itrans_iquant.h" |
| 74 | #include "ih264_inter_pred_filters.h" |
| 75 | #include "ih264_mem_fns.h" |
| 76 | #include "ih264_padding.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 77 | #include "ih264_deblk_edge_filters.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 78 | #include "ih264_cabac_tables.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 79 | #include "ime_distortion_metrics.h" |
| 80 | #include "ih264e_error.h" |
| 81 | #include "ih264e_bitstream.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 82 | #include "ime_defs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 83 | #include "ime_structs.h" |
| 84 | #include "irc_cntrl_param.h" |
| 85 | #include "irc_frame_info_collector.h" |
| 86 | #include "ih264e_rate_control.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 87 | #include "ih264e_cabac_structs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 88 | #include "ih264e_structs.h" |
| 89 | #include "ih264e_intra_modes_eval.h" |
| 90 | #include "ih264e_globals.h" |
| 91 | #include "ime_platform_macros.h" |
| 92 | |
| 93 | |
| 94 | /*****************************************************************************/ |
| 95 | /* Function Definitions */ |
| 96 | /*****************************************************************************/ |
| 97 | |
| 98 | /** |
| 99 | ****************************************************************************** |
| 100 | * |
| 101 | * @brief |
| 102 | * derivation process for macroblock availability |
| 103 | * |
| 104 | * @par Description |
| 105 | * Calculates the availability of the left, top, topright and topleft macroblocks. |
| 106 | * |
| 107 | * @param[in] ps_proc_ctxt |
| 108 | * pointer to proc context (handle) |
| 109 | * |
| 110 | * @remarks Based on section 6.4.5 in H264 spec |
| 111 | * |
| 112 | * @return none |
| 113 | * |
| 114 | ****************************************************************************** |
| 115 | */ |
| 116 | void ih264e_derive_nghbr_avbl_of_mbs(process_ctxt_t *ps_proc) |
| 117 | { |
| 118 | UWORD8 *pu1_slice_idx_curr = ps_proc->pu1_slice_idx; |
| 119 | UWORD8 *pu1_slice_idx_b; |
| 120 | UWORD8 *pu1_slice_idx_a; |
| 121 | UWORD8 *pu1_slice_idx_c; |
| 122 | UWORD8 *pu1_slice_idx_d; |
| 123 | block_neighbors_t *ps_ngbr_avbl; |
| 124 | WORD32 i4_mb_x, i4_mb_y; |
| 125 | WORD32 i4_wd_mbs; |
| 126 | |
| 127 | i4_mb_x = ps_proc->i4_mb_x; |
| 128 | i4_mb_y = ps_proc->i4_mb_y; |
| 129 | |
| 130 | i4_wd_mbs = ps_proc->i4_wd_mbs; |
| 131 | |
| 132 | pu1_slice_idx_curr += (i4_mb_y * i4_wd_mbs) + i4_mb_x; |
| 133 | pu1_slice_idx_a = pu1_slice_idx_curr - 1; |
| 134 | pu1_slice_idx_b = pu1_slice_idx_curr - i4_wd_mbs; |
| 135 | pu1_slice_idx_c = pu1_slice_idx_b + 1; |
| 136 | pu1_slice_idx_d = pu1_slice_idx_b - 1; |
| 137 | ps_ngbr_avbl = ps_proc->ps_ngbr_avbl; |
| 138 | |
| 139 | /**********************************************************************/ |
| 140 | /* The macroblock is marked as available, unless one of the following */ |
| 141 | /* conditions is true in which case the macroblock shall be marked as */ |
| 142 | /* not available. */ |
| 143 | /* 1. mbAddr < 0 */ |
| 144 | /* 2 mbAddr > CurrMbAddr */ |
| 145 | /* 3. the macroblock with address mbAddr belongs to a different slice */ |
| 146 | /* than the macroblock with address CurrMbAddr */ |
| 147 | /**********************************************************************/ |
| 148 | |
| 149 | /* left macroblock availability */ |
| 150 | if (i4_mb_x == 0) |
| 151 | { /* macroblocks along first column */ |
| 152 | ps_ngbr_avbl->u1_mb_a = 0; |
| 153 | } |
| 154 | else |
| 155 | { /* macroblocks belong to same slice? */ |
| 156 | if (*pu1_slice_idx_a != *pu1_slice_idx_curr) |
| 157 | ps_ngbr_avbl->u1_mb_a = 0; |
| 158 | else |
| 159 | ps_ngbr_avbl->u1_mb_a = 1; |
| 160 | } |
| 161 | |
| 162 | /* top macroblock availability */ |
| 163 | if (i4_mb_y == 0) |
| 164 | { /* macroblocks along first row */ |
| 165 | ps_ngbr_avbl->u1_mb_b = 0; |
| 166 | } |
| 167 | else |
| 168 | { /* macroblocks belong to same slice? */ |
| 169 | if (*pu1_slice_idx_b != *pu1_slice_idx_curr) |
| 170 | ps_ngbr_avbl->u1_mb_b = 0; |
| 171 | else |
| 172 | ps_ngbr_avbl->u1_mb_b = 1; |
| 173 | } |
| 174 | |
| 175 | /* top right macroblock availability */ |
| 176 | if (i4_mb_x == i4_wd_mbs-1 || i4_mb_y == 0) |
| 177 | { /* macroblocks along last column */ |
| 178 | ps_ngbr_avbl->u1_mb_c = 0; |
| 179 | } |
| 180 | else |
| 181 | { /* macroblocks belong to same slice? */ |
| 182 | if (*pu1_slice_idx_c != *pu1_slice_idx_curr) |
| 183 | ps_ngbr_avbl->u1_mb_c = 0; |
| 184 | else |
| 185 | ps_ngbr_avbl->u1_mb_c = 1; |
| 186 | } |
| 187 | |
| 188 | /* top left macroblock availability */ |
| 189 | if (i4_mb_x == 0 || i4_mb_y == 0) |
| 190 | { /* macroblocks along first column */ |
| 191 | ps_ngbr_avbl->u1_mb_d = 0; |
| 192 | } |
| 193 | else |
| 194 | { /* macroblocks belong to same slice? */ |
| 195 | if (*pu1_slice_idx_d != *pu1_slice_idx_curr) |
| 196 | ps_ngbr_avbl->u1_mb_d = 0; |
| 197 | else |
| 198 | ps_ngbr_avbl->u1_mb_d = 1; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | ****************************************************************************** |
| 204 | * |
| 205 | * @brief |
| 206 | * derivation process for subblock/partition availability |
| 207 | * |
| 208 | * @par Description |
| 209 | * Calculates the availability of the left, top, topright and topleft subblock |
| 210 | * or partitions. |
| 211 | * |
| 212 | * @param[in] ps_proc_ctxt |
| 213 | * pointer to macroblock context (handle) |
| 214 | * |
| 215 | * @param[in] i1_pel_pos_x |
| 216 | * column position of the pel wrt the current block |
| 217 | * |
| 218 | * @param[in] i1_pel_pos_y |
| 219 | * row position of the pel in wrt current block |
| 220 | * |
| 221 | * @remarks Assumptions: before calling this function it is assumed that |
| 222 | * the neighbor availability of the current macroblock is already derived. |
| 223 | * Based on table 6-3 of H264 specification |
| 224 | * |
| 225 | * @return availability status (yes or no) |
| 226 | * |
| 227 | ****************************************************************************** |
| 228 | */ |
| 229 | UWORD8 ih264e_derive_ngbr_avbl_of_mb_partitions(block_neighbors_t *ps_ngbr_avbl, |
| 230 | WORD8 i1_pel_pos_x, |
| 231 | WORD8 i1_pel_pos_y) |
| 232 | { |
| 233 | UWORD8 u1_neighbor_avail=0; |
| 234 | |
| 235 | /**********************************************************************/ |
| 236 | /* values of i1_pel_pos_x in the range 0-15 inclusive correspond to */ |
| 237 | /* various columns of a macroblock */ |
| 238 | /* */ |
| 239 | /* values of i1_pel_pos_y in the range 0-15 inclusive correspond to */ |
| 240 | /* various rows of a macroblock */ |
| 241 | /* */ |
| 242 | /* other values of i1_pel_pos_x & i1_pel_pos_y represents elements */ |
| 243 | /* outside the bound of an mb ie., represents its neighbors. */ |
| 244 | /**********************************************************************/ |
| 245 | if (i1_pel_pos_x < 0) |
| 246 | { /* column(-1) */ |
| 247 | if (i1_pel_pos_y < 0) |
| 248 | { /* row(-1) */ |
| 249 | u1_neighbor_avail = ps_ngbr_avbl->u1_mb_d; /* current mb topleft availability */ |
| 250 | } |
| 251 | else if (i1_pel_pos_y >= 0 && i1_pel_pos_y < 16) |
| 252 | { /* all rows of a macroblock */ |
| 253 | u1_neighbor_avail = ps_ngbr_avbl->u1_mb_a; /* current mb left availability */ |
| 254 | } |
| 255 | else /* if (i1_pel_pos_y >= 16) */ |
| 256 | { /* rows(+16) */ |
| 257 | u1_neighbor_avail = 0; /* current mb bottom left availability */ |
| 258 | } |
| 259 | } |
| 260 | else if (i1_pel_pos_x >= 0 && i1_pel_pos_x < 16) |
| 261 | { /* all columns of a macroblock */ |
| 262 | if (i1_pel_pos_y < 0) |
| 263 | { /* row(-1) */ |
| 264 | u1_neighbor_avail = ps_ngbr_avbl->u1_mb_b; /* current mb top availability */ |
| 265 | } |
| 266 | else if (i1_pel_pos_y >= 0 && i1_pel_pos_y < 16) |
| 267 | { /* all rows of a macroblock */ |
| 268 | u1_neighbor_avail = 1; /* current mb availability */ |
| 269 | /* availability of the partition is dependent on the position of the partition inside the mb */ |
| 270 | /* although the availability is declared as 1 in all cases these needs to be corrected somewhere else and this is not done in here */ |
| 271 | } |
| 272 | else /* if (i1_pel_pos_y >= 16) */ |
| 273 | { /* rows(+16) */ |
| 274 | u1_neighbor_avail = 0; /* current mb bottom availability */ |
| 275 | } |
| 276 | } |
| 277 | else if (i1_pel_pos_x >= 16) |
| 278 | { /* column(+16) */ |
| 279 | if (i1_pel_pos_y < 0) |
| 280 | { /* row(-1) */ |
| 281 | u1_neighbor_avail = ps_ngbr_avbl->u1_mb_c; /* current mb top right availability */ |
| 282 | } |
| 283 | else /* if (i1_pel_pos_y >= 0) */ |
| 284 | { /* all other rows */ |
| 285 | u1_neighbor_avail = 0; /* current mb right & bottom right availability */ |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | return u1_neighbor_avail; |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | ****************************************************************************** |
| 294 | * |
| 295 | * @brief |
| 296 | * evaluate best intra 16x16 mode (rate distortion opt off) |
| 297 | * |
| 298 | * @par Description |
| 299 | * This function evaluates all the possible intra 16x16 modes and finds the mode |
| 300 | * that best represents the macro-block (least distortion) and occupies fewer |
| 301 | * bits in the bit-stream. |
| 302 | * |
| 303 | * @param[in] ps_proc_ctxt |
| 304 | * pointer to process context (handle) |
| 305 | * |
| 306 | * @remarks |
| 307 | * Ideally the cost of encoding a macroblock is calculated as |
| 308 | * (distortion + lambda*rate). Where distortion is SAD/SATD,... between the |
| 309 | * input block and the reconstructed block and rate is the number of bits taken |
| 310 | * to place the macroblock in the bit-stream. In this routine the rate does not |
| 311 | * exactly point to the total number of bits it takes, rather it points to header |
| 312 | * bits necessary for encoding the macroblock. Assuming the deltaQP, cbp bits |
| 313 | * and residual bits fall in to texture bits the number of bits taken to encoding |
| 314 | * mbtype is considered as rate, we compute cost. Further we will approximate |
| 315 | * the distortion as the deviation b/w input and the predicted block as opposed |
| 316 | * to input and reconstructed block. |
| 317 | * |
| 318 | * NOTE: As per the Document JVT-O079, for intra 16x16 macroblock, |
| 319 | * the SAD and cost are one and the same. |
| 320 | * |
| 321 | * @return none |
| 322 | * |
| 323 | ****************************************************************************** |
| 324 | */ |
| 325 | |
| 326 | void ih264e_evaluate_intra16x16_modes_for_least_cost_rdoptoff(process_ctxt_t *ps_proc) |
| 327 | { |
| 328 | /* Codec Context */ |
| 329 | codec_t *ps_codec = ps_proc->ps_codec; |
| 330 | |
| 331 | /* SAD(distortion metric) of an 8x8 block */ |
| 332 | WORD32 i4_mb_distortion = INT_MAX, i4_mb_distortion_least = INT_MAX; |
| 333 | |
| 334 | /* lambda */ |
| 335 | UWORD32 u4_lambda = ps_proc->u4_lambda; |
| 336 | |
| 337 | /* cost = distortion + lambda*rate */ |
| 338 | WORD32 i4_mb_cost= INT_MAX, i4_mb_cost_least = INT_MAX; |
| 339 | |
| 340 | /* intra mode */ |
| 341 | UWORD32 u4_intra_mode, u4_best_intra_16x16_mode = DC_I16x16; |
| 342 | |
| 343 | /* neighbor pels for intra prediction */ |
| 344 | UWORD8 *pu1_ngbr_pels_i16 = ps_proc->au1_ngbr_pels; |
| 345 | |
| 346 | /* neighbor availability */ |
| 347 | WORD32 i4_ngbr_avbl; |
| 348 | |
| 349 | /* pointer to src macro block */ |
| 350 | UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_luma; |
| 351 | UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_luma; |
| 352 | |
| 353 | /* pointer to prediction macro block */ |
| 354 | UWORD8 *pu1_pred_mb_intra_16x16 = ps_proc->pu1_pred_mb_intra_16x16; |
| 355 | UWORD8 *pu1_pred_mb_intra_16x16_plane = ps_proc->pu1_pred_mb_intra_16x16_plane; |
| 356 | |
| 357 | /* strides */ |
| 358 | WORD32 i4_src_strd = ps_proc->i4_src_strd; |
| 359 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 360 | WORD32 i4_rec_strd = ps_proc->i4_rec_strd; |
| 361 | |
| 362 | /* pointer to neighbors left, top, topleft */ |
| 363 | UWORD8 *pu1_mb_a = pu1_ref_mb - 1; |
| 364 | UWORD8 *pu1_mb_b = pu1_ref_mb - i4_rec_strd; |
| 365 | UWORD8 *pu1_mb_d = pu1_mb_b - 1; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 366 | UWORD8 u1_mb_a, u1_mb_b, u1_mb_d; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 367 | /* valid intra modes map */ |
| 368 | UWORD32 u4_valid_intra_modes; |
| 369 | |
| 370 | /* lut for valid intra modes */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 371 | const UWORD8 u1_valid_intra_modes[8] = {4, 6, 4, 6, 5, 7, 5, 15}; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 372 | |
| 373 | /* temp var */ |
| 374 | UWORD32 i, u4_enable_fast_sad = 0, offset = 0; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 375 | mb_info_t *ps_top_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
| 376 | UWORD32 u4_constrained_intra_pred = ps_proc->ps_codec->s_cfg.u4_constrained_intra_pred; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 377 | |
| 378 | /* init temp var */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 379 | if (ps_proc->i4_slice_type != ISLICE) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 380 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 381 | /* Offset for MBtype */ |
| 382 | offset = (ps_proc->i4_slice_type == PSLICE) ? 5 : 23; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 383 | u4_enable_fast_sad = ps_proc->s_me_ctxt.u4_enable_fast_sad; |
| 384 | } |
| 385 | |
| 386 | /* locating neighbors that are available for prediction */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 387 | |
| 388 | /* gather prediction pels from the neighbors, if particular set is not available |
| 389 | * it is set to zero*/ |
| 390 | /* left pels */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 391 | u1_mb_a = ((ps_proc->ps_ngbr_avbl->u1_mb_a) |
| 392 | && (u4_constrained_intra_pred ? ps_proc->s_left_mb_syntax_ele.u2_is_intra : 1)); |
| 393 | if (u1_mb_a) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 394 | { |
| 395 | for(i = 0; i < 16; i++) |
| 396 | pu1_ngbr_pels_i16[16-1-i] = pu1_mb_a[i * i4_rec_strd]; |
| 397 | } |
| 398 | else |
| 399 | { |
| 400 | ps_codec->pf_mem_set_mul8(pu1_ngbr_pels_i16,0,MB_SIZE); |
| 401 | } |
| 402 | /* top pels */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 403 | u1_mb_b = ((ps_proc->ps_ngbr_avbl->u1_mb_b) |
| 404 | && (u4_constrained_intra_pred ? ps_top_mb_syn_ele->u2_is_intra : 1)); |
| 405 | if (u1_mb_b) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 406 | { |
| 407 | ps_codec->pf_mem_cpy_mul8(pu1_ngbr_pels_i16+16+1,pu1_mb_b,16); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 408 | } |
| 409 | else |
| 410 | { |
| 411 | ps_codec->pf_mem_set_mul8(pu1_ngbr_pels_i16+16+1,0,MB_SIZE); |
| 412 | } |
| 413 | /* topleft pels */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 414 | u1_mb_d = ((ps_proc->ps_ngbr_avbl->u1_mb_d) |
| 415 | && (u4_constrained_intra_pred ? ps_proc->s_top_left_mb_syntax_ele.u2_is_intra : 1)); |
| 416 | if (u1_mb_d) |
| 417 | { |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 418 | pu1_ngbr_pels_i16[16] = *pu1_mb_d; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 419 | } |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 420 | else |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 421 | { |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 422 | pu1_ngbr_pels_i16[16] = 0; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | i4_ngbr_avbl = (u1_mb_a) + (u1_mb_b << 2) + (u1_mb_d << 1); |
| 426 | ps_proc->i4_ngbr_avbl_16x16_mb = i4_ngbr_avbl; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 427 | |
| 428 | /* set valid intra modes for evaluation */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 429 | u4_valid_intra_modes = u1_valid_intra_modes[i4_ngbr_avbl]; |
| 430 | |
Ram Mohan | 91a6cef | 2017-11-27 17:58:58 +0530 | [diff] [blame] | 431 | if (ps_codec->s_cfg.u4_enc_speed_preset == IVE_FAST || |
| 432 | ps_codec->s_cfg.u4_enc_speed_preset == IVE_FASTEST) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 433 | u4_valid_intra_modes &= ~(1 << PLANE_I16x16); |
| 434 | |
| 435 | /* evaluate b/w HORZ_I16x16, VERT_I16x16 & DC_I16x16 */ |
| 436 | ps_codec->pf_ih264e_evaluate_intra16x16_modes(pu1_curr_mb, pu1_ngbr_pels_i16, pu1_pred_mb_intra_16x16, |
| 437 | i4_src_strd, i4_pred_strd, |
| 438 | i4_ngbr_avbl, &u4_intra_mode, &i4_mb_distortion_least, |
| 439 | u4_valid_intra_modes); |
| 440 | |
| 441 | /* cost = distortion + lambda*rate */ |
| 442 | i4_mb_cost_least = i4_mb_distortion_least; |
| 443 | |
Ram Mohan | 91a6cef | 2017-11-27 17:58:58 +0530 | [diff] [blame] | 444 | if (((u4_valid_intra_modes >> 3) & 1) != 0) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 445 | { |
| 446 | /* intra prediction for PLANE mode*/ |
| 447 | (ps_codec->apf_intra_pred_16_l)[PLANE_I16x16](pu1_ngbr_pels_i16, pu1_pred_mb_intra_16x16_plane, 0, i4_pred_strd, i4_ngbr_avbl); |
| 448 | |
| 449 | /* evaluate distortion between the actual blk and the estimated blk for the given mode */ |
| 450 | ps_codec->apf_compute_sad_16x16[u4_enable_fast_sad](pu1_curr_mb, pu1_pred_mb_intra_16x16_plane, i4_src_strd, i4_pred_strd, i4_mb_cost_least, &i4_mb_distortion); |
| 451 | |
| 452 | /* cost = distortion + lambda*rate */ |
| 453 | i4_mb_cost = i4_mb_distortion; |
| 454 | |
| 455 | /* update the least cost information if necessary */ |
| 456 | if(i4_mb_cost < i4_mb_distortion_least) |
| 457 | { |
| 458 | u4_intra_mode = PLANE_I16x16; |
| 459 | |
| 460 | i4_mb_cost_least = i4_mb_cost; |
| 461 | i4_mb_distortion_least = i4_mb_distortion; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | u4_best_intra_16x16_mode = u4_intra_mode; |
| 466 | |
| 467 | DEBUG("%d partition cost, %d intra mode\n", i4_mb_cost_least * 32, u4_best_intra_16x16_mode); |
| 468 | |
| 469 | ps_proc->u1_l_i16_mode = u4_best_intra_16x16_mode; |
| 470 | |
| 471 | /* cost = distortion + lambda*rate */ |
| 472 | i4_mb_cost_least = i4_mb_distortion_least + u4_lambda*u1_uev_codelength[offset + u4_best_intra_16x16_mode]; |
| 473 | |
| 474 | |
| 475 | /* update the type of the mb if necessary */ |
| 476 | if (i4_mb_cost_least < ps_proc->i4_mb_cost) |
| 477 | { |
| 478 | ps_proc->i4_mb_cost = i4_mb_cost_least; |
| 479 | ps_proc->i4_mb_distortion = i4_mb_distortion_least; |
| 480 | ps_proc->u4_mb_type = I16x16; |
| 481 | } |
| 482 | |
| 483 | return ; |
| 484 | } |
| 485 | |
| 486 | |
| 487 | /** |
| 488 | ****************************************************************************** |
| 489 | * |
| 490 | * @brief |
| 491 | * evaluate best intra 8x8 mode (rate distortion opt on) |
| 492 | * |
| 493 | * @par Description |
| 494 | * This function evaluates all the possible intra 8x8 modes and finds the mode |
| 495 | * that best represents the macro-block (least distortion) and occupies fewer |
| 496 | * bits in the bit-stream. |
| 497 | * |
| 498 | * @param[in] ps_proc_ctxt |
| 499 | * pointer to proc ctxt |
| 500 | * |
| 501 | * @remarks Ideally the cost of encoding a macroblock is calculated as |
| 502 | * (distortion + lambda*rate). Where distortion is SAD/SATD,... between the |
| 503 | * input block and the reconstructed block and rate is the number of bits taken |
| 504 | * to place the macroblock in the bit-stream. In this routine the rate does not |
| 505 | * exactly point to the total number of bits it takes, rather it points to header |
| 506 | * bits necessary for encoding the macroblock. Assuming the deltaQP, cbp bits |
| 507 | * and residual bits fall in to texture bits the number of bits taken to encoding |
| 508 | * mbtype is considered as rate, we compute cost. Further we will approximate |
| 509 | * the distortion as the deviation b/w input and the predicted block as opposed |
| 510 | * to input and reconstructed block. |
| 511 | * |
| 512 | * NOTE: TODO: This function needs to be tested |
| 513 | * |
| 514 | * @return none |
| 515 | * |
| 516 | ****************************************************************************** |
| 517 | */ |
| 518 | void ih264e_evaluate_intra8x8_modes_for_least_cost_rdoptoff(process_ctxt_t *ps_proc) |
| 519 | { |
| 520 | /* Codec Context */ |
| 521 | codec_t *ps_codec = ps_proc->ps_codec; |
| 522 | |
| 523 | /* SAD(distortion metric) of an 4x4 block */ |
| 524 | WORD32 i4_partition_distortion, i4_partition_distortion_least = INT_MAX, i4_total_distortion = 0; |
| 525 | |
| 526 | /* lambda */ |
| 527 | UWORD32 u4_lambda = ps_proc->u4_lambda; |
| 528 | |
| 529 | /* cost = distortion + lambda*rate */ |
| 530 | WORD32 i4_partition_cost, i4_partition_cost_least, i4_total_cost = u4_lambda; |
| 531 | |
| 532 | /* cost due to mbtype */ |
| 533 | UWORD32 u4_cost_one_bit = u4_lambda, u4_cost_four_bits = 4 * u4_lambda; |
| 534 | |
| 535 | /* intra mode */ |
| 536 | UWORD32 u4_intra_mode, u4_best_intra_8x8_mode = DC_I8x8, u4_estimated_intra_8x8_mode; |
| 537 | |
| 538 | /* neighbor pels for intra prediction */ |
| 539 | UWORD8 *pu1_ngbr_pels_i8 = ps_proc->au1_ngbr_pels; |
| 540 | |
| 541 | /* pointer to curr partition */ |
| 542 | UWORD8 *pu1_mb_curr; |
| 543 | |
| 544 | /* pointer to prediction macro block */ |
| 545 | UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb; |
| 546 | |
| 547 | /* strides */ |
| 548 | WORD32 i4_src_strd = ps_proc->i4_src_strd; |
| 549 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 550 | |
| 551 | /* neighbors left, top, top right, top left */ |
| 552 | UWORD8 *pu1_mb_a; |
| 553 | UWORD8 *pu1_mb_b; |
| 554 | UWORD8 *pu1_mb_d; |
| 555 | |
| 556 | /* neighbor availability */ |
| 557 | WORD32 i4_ngbr_avbl; |
| 558 | block_neighbors_t s_ngbr_avbl; |
| 559 | |
| 560 | /* temp vars */ |
| 561 | UWORD32 b8, u4_pix_x, u4_pix_y; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 562 | UWORD32 u4_constrained_intra_pred = ps_proc->ps_codec->s_cfg.u4_constrained_intra_pred; |
| 563 | block_neighbors_t s_ngbr_avbl_MB; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 564 | |
| 565 | /* ngbr mb syntax information */ |
| 566 | UWORD8 *pu1_top_mb_intra_modes = ps_proc->pu1_top_mb_intra_modes + (ps_proc->i4_mb_x << 4); |
| 567 | mb_info_t *ps_top_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 568 | mb_info_t *ps_top_right_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 569 | /* valid intra modes map */ |
| 570 | UWORD32 u4_valid_intra_modes; |
| 571 | |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 572 | if (ps_proc->ps_ngbr_avbl->u1_mb_c) |
| 573 | { |
| 574 | ps_top_right_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + (ps_proc->i4_mb_x + 1); |
| 575 | } |
| 576 | /* left pels */ |
| 577 | s_ngbr_avbl_MB.u1_mb_a = ((ps_proc->ps_ngbr_avbl->u1_mb_a) |
| 578 | && (u4_constrained_intra_pred ? ps_proc->s_left_mb_syntax_ele.u2_is_intra : 1)); |
| 579 | |
| 580 | /* top pels */ |
| 581 | s_ngbr_avbl_MB.u1_mb_b = ((ps_proc->ps_ngbr_avbl->u1_mb_b) |
| 582 | && (u4_constrained_intra_pred ? ps_top_mb_syn_ele->u2_is_intra : 1)); |
| 583 | |
| 584 | /* topleft pels */ |
| 585 | s_ngbr_avbl_MB.u1_mb_d = ((ps_proc->ps_ngbr_avbl->u1_mb_d) |
| 586 | && (u4_constrained_intra_pred ? ps_proc->s_top_left_mb_syntax_ele.u2_is_intra : 1)); |
| 587 | |
| 588 | /* top right */ |
| 589 | s_ngbr_avbl_MB.u1_mb_c = ((ps_proc->ps_ngbr_avbl->u1_mb_c) |
| 590 | && (u4_constrained_intra_pred ? ps_top_right_mb_syn_ele->u2_is_intra : 1)); |
| 591 | |
| 592 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 593 | for(b8 = 0; b8 < 4; b8++) |
| 594 | { |
| 595 | u4_pix_x = (b8 & 0x01) << 3; |
| 596 | u4_pix_y = (b8 >> 1) << 3; |
| 597 | |
| 598 | pu1_mb_curr = ps_proc->pu1_src_buf_luma + u4_pix_x + (u4_pix_y * i4_src_strd); |
| 599 | /* when rdopt is off, we use the input as reference for constructing prediction buffer */ |
| 600 | /* as opposed to using the recon pels. (open loop intra prediction) */ |
| 601 | pu1_mb_a = pu1_mb_curr - 1; /* pointer to left macro block */ |
| 602 | pu1_mb_b = pu1_mb_curr - i4_src_strd; /* pointer to top macro block */ |
| 603 | pu1_mb_d = pu1_mb_b - 1; /* pointer to top left macro block */ |
| 604 | |
| 605 | /* locating neighbors that are available for prediction */ |
| 606 | /* TODO : update the neighbor availability information basing on constrained intra pred information */ |
| 607 | /* TODO : i4_ngbr_avbl is only being used in DC mode. Can the DC mode be split in to distinct routines */ |
| 608 | /* basing on neighbors available and hence evade the computation of neighbor availability totally. */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 609 | s_ngbr_avbl.u1_mb_a = ih264e_derive_ngbr_avbl_of_mb_partitions(&s_ngbr_avbl_MB, u4_pix_x - 1, u4_pix_y); /* xD = -1, yD = 0 */ |
| 610 | s_ngbr_avbl.u1_mb_b = ih264e_derive_ngbr_avbl_of_mb_partitions(&s_ngbr_avbl_MB, u4_pix_x, u4_pix_y - 1); /* xD = 0, yD = -1 */ |
| 611 | s_ngbr_avbl.u1_mb_c = ih264e_derive_ngbr_avbl_of_mb_partitions(&s_ngbr_avbl_MB, u4_pix_x + 8, u4_pix_y - 1); /* xD = BLK_8x8_SIZE, yD = -1 */ |
| 612 | s_ngbr_avbl.u1_mb_d = ih264e_derive_ngbr_avbl_of_mb_partitions(&s_ngbr_avbl_MB, u4_pix_x - 1, u4_pix_y - 1); /* xD = -1, yD = -1 */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 613 | |
| 614 | /* i4_ngbr_avbl = blk_a * LEFT_MB_AVAILABLE_MASK + blk_b * TOP_MB_AVAILABLE_MASK + blk_c * TOP_RIGHT_MB_AVAILABLE_MASK + blk_d * TOP_LEFT_MB_AVAILABLE_MASK */ |
| 615 | i4_ngbr_avbl = (s_ngbr_avbl.u1_mb_a) + (s_ngbr_avbl.u1_mb_d << 1) + (s_ngbr_avbl.u1_mb_b << 2) + (s_ngbr_avbl.u1_mb_c << 3) + |
| 616 | (s_ngbr_avbl.u1_mb_a << 4); |
| 617 | /* if top partition is available and top right is not available for intra prediction, then */ |
| 618 | /* padd top right samples using top sample and make top right also available */ |
| 619 | /* i4_ngbr_avbl = (s_ngbr_avbl.u1_mb_a) + (s_ngbr_avbl.u1_mb_d << 1) + (s_ngbr_avbl.u1_mb_b << 2) + ((s_ngbr_avbl.u1_mb_b | s_ngbr_avbl.u1_mb_c) << 3); */ |
| 620 | ps_proc->ai4_neighbor_avail_8x8_subblks[b8] = i4_ngbr_avbl; |
| 621 | |
| 622 | |
| 623 | ih264_intra_pred_luma_8x8_mode_ref_filtering(pu1_mb_a, pu1_mb_b, pu1_mb_d, pu1_ngbr_pels_i8, |
| 624 | i4_src_strd, i4_ngbr_avbl); |
| 625 | |
| 626 | i4_partition_cost_least = INT_MAX; |
| 627 | /* set valid intra modes for evaluation */ |
| 628 | u4_valid_intra_modes = 0x1ff; |
| 629 | |
| 630 | if (!s_ngbr_avbl.u1_mb_b) |
| 631 | { |
| 632 | u4_valid_intra_modes &= ~(1 << VERT_I4x4); |
| 633 | u4_valid_intra_modes &= ~(1 << DIAG_DL_I4x4); |
| 634 | u4_valid_intra_modes &= ~(1 << VERT_L_I4x4); |
| 635 | } |
| 636 | if (!s_ngbr_avbl.u1_mb_a) |
| 637 | { |
| 638 | u4_valid_intra_modes &= ~(1 << HORZ_I4x4); |
| 639 | u4_valid_intra_modes &= ~(1 << HORZ_U_I4x4); |
| 640 | } |
| 641 | if (!s_ngbr_avbl.u1_mb_a || !s_ngbr_avbl.u1_mb_b || !s_ngbr_avbl.u1_mb_d) |
| 642 | { |
| 643 | u4_valid_intra_modes &= ~(1 << DIAG_DR_I4x4); |
| 644 | u4_valid_intra_modes &= ~(1 << VERT_R_I4x4); |
| 645 | u4_valid_intra_modes &= ~(1 << HORZ_D_I4x4); |
| 646 | } |
| 647 | |
| 648 | /* estimate the intra 8x8 mode for the current partition (for evaluating cost) */ |
| 649 | if (!s_ngbr_avbl.u1_mb_a || !s_ngbr_avbl.u1_mb_b) |
| 650 | { |
| 651 | u4_estimated_intra_8x8_mode = DC_I8x8; |
| 652 | } |
| 653 | else |
| 654 | { |
| 655 | UWORD32 u4_left_intra_8x8_mode = DC_I8x8; |
| 656 | UWORD32 u4_top_intra_8x8_mode = DC_I8x8; |
| 657 | |
| 658 | if (u4_pix_x == 0) |
| 659 | { |
| 660 | if (ps_proc->s_left_mb_syntax_ele.u2_mb_type == I8x8) |
| 661 | { |
| 662 | u4_left_intra_8x8_mode = ps_proc->au1_left_mb_intra_modes[b8+1]; |
| 663 | } |
| 664 | else if (ps_proc->s_left_mb_syntax_ele.u2_mb_type == I4x4) |
| 665 | { |
| 666 | u4_left_intra_8x8_mode = ps_proc->au1_left_mb_intra_modes[(b8+1)*4+2]; |
| 667 | } |
| 668 | } |
| 669 | else |
| 670 | { |
| 671 | u4_left_intra_8x8_mode = ps_proc->au1_intra_luma_mb_8x8_modes[b8-1]; |
| 672 | } |
| 673 | |
| 674 | if (u4_pix_y == 0) |
| 675 | { |
| 676 | if (ps_top_mb_syn_ele->u2_mb_type == I8x8) |
| 677 | { |
| 678 | u4_top_intra_8x8_mode = pu1_top_mb_intra_modes[b8+2]; |
| 679 | } |
| 680 | else if (ps_top_mb_syn_ele->u2_mb_type == I4x4) |
| 681 | { |
| 682 | u4_top_intra_8x8_mode = pu1_top_mb_intra_modes[(b8+2)*4+2]; |
| 683 | } |
| 684 | } |
| 685 | else |
| 686 | { |
| 687 | u4_top_intra_8x8_mode = ps_proc->au1_intra_luma_mb_8x8_modes[b8-2]; |
| 688 | } |
| 689 | |
| 690 | u4_estimated_intra_8x8_mode = MIN(u4_left_intra_8x8_mode, u4_top_intra_8x8_mode); |
| 691 | } |
| 692 | |
| 693 | /* perform intra mode 8x8 evaluation */ |
| 694 | for (u4_intra_mode = VERT_I8x8; u4_valid_intra_modes != 0; u4_intra_mode++, u4_valid_intra_modes >>= 1) |
| 695 | { |
| 696 | if ( (u4_valid_intra_modes & 1) == 0) |
| 697 | continue; |
| 698 | |
| 699 | /* intra prediction */ |
| 700 | (ps_codec->apf_intra_pred_8_l)[u4_intra_mode](pu1_ngbr_pels_i8, pu1_pred_mb, 0, i4_pred_strd, i4_ngbr_avbl); |
| 701 | |
| 702 | /* evaluate distortion between the actual blk and the estimated blk for the given mode */ |
| 703 | ime_compute_sad_8x8(pu1_mb_curr, pu1_pred_mb, i4_src_strd, i4_pred_strd, i4_partition_cost_least, &i4_partition_distortion); |
| 704 | |
| 705 | i4_partition_cost = i4_partition_distortion + ((u4_estimated_intra_8x8_mode == u4_intra_mode)?u4_cost_one_bit:u4_cost_four_bits); |
| 706 | |
| 707 | /* update the least cost information if necessary */ |
| 708 | if (i4_partition_cost < i4_partition_cost_least) |
| 709 | { |
| 710 | i4_partition_cost_least = i4_partition_cost; |
| 711 | i4_partition_distortion_least = i4_partition_distortion; |
| 712 | u4_best_intra_8x8_mode = u4_intra_mode; |
| 713 | } |
| 714 | } |
| 715 | /* macroblock distortion */ |
| 716 | i4_total_cost += i4_partition_cost_least; |
| 717 | i4_total_distortion += i4_partition_distortion_least; |
| 718 | /* mb partition mode */ |
| 719 | ps_proc->au1_intra_luma_mb_8x8_modes[b8] = u4_best_intra_8x8_mode; |
| 720 | |
| 721 | } |
| 722 | |
| 723 | /* update the type of the mb if necessary */ |
| 724 | if (i4_total_cost < ps_proc->i4_mb_cost) |
| 725 | { |
| 726 | ps_proc->i4_mb_cost = i4_total_cost; |
| 727 | ps_proc->i4_mb_distortion = i4_total_distortion; |
| 728 | ps_proc->u4_mb_type = I8x8; |
| 729 | } |
| 730 | |
| 731 | return ; |
| 732 | } |
| 733 | |
| 734 | |
| 735 | /** |
| 736 | ****************************************************************************** |
| 737 | * |
| 738 | * @brief |
| 739 | * evaluate best intra 4x4 mode (rate distortion opt off) |
| 740 | * |
| 741 | * @par Description |
| 742 | * This function evaluates all the possible intra 4x4 modes and finds the mode |
| 743 | * that best represents the macro-block (least distortion) and occupies fewer |
| 744 | * bits in the bit-stream. |
| 745 | * |
| 746 | * @param[in] ps_proc_ctxt |
| 747 | * pointer to proc ctxt |
| 748 | * |
| 749 | * @remarks |
| 750 | * Ideally the cost of encoding a macroblock is calculated as |
| 751 | * (distortion + lambda*rate). Where distortion is SAD/SATD,... between the |
| 752 | * input block and the reconstructed block and rate is the number of bits taken |
| 753 | * to place the macroblock in the bit-stream. In this routine the rate does not |
| 754 | * exactly point to the total number of bits it takes, rather it points to header |
| 755 | * bits necessary for encoding the macroblock. Assuming the deltaQP, cbp bits |
| 756 | * and residual bits fall in to texture bits the number of bits taken to encoding |
| 757 | * mbtype is considered as rate, we compute cost. Further we will approximate |
| 758 | * the distortion as the deviation b/w input and the predicted block as opposed |
| 759 | * to input and reconstructed block. |
| 760 | * |
| 761 | * NOTE: As per the Document JVT-O079, for the whole intra 4x4 macroblock, |
| 762 | * 24*lambda is added to the SAD before comparison with the best SAD for |
| 763 | * inter prediction. This is an empirical value to prevent using too many intra |
| 764 | * blocks. |
| 765 | * |
| 766 | * @return none |
| 767 | * |
| 768 | ****************************************************************************** |
| 769 | */ |
| 770 | void ih264e_evaluate_intra4x4_modes_for_least_cost_rdoptoff(process_ctxt_t *ps_proc) |
| 771 | { |
| 772 | /* Codec Context */ |
| 773 | codec_t *ps_codec = ps_proc->ps_codec; |
| 774 | |
| 775 | /* SAD(distortion metric) of an 4x4 block */ |
| 776 | WORD32 i4_partition_distortion_least = INT_MAX, i4_total_distortion = 0; |
| 777 | |
| 778 | /* lambda */ |
| 779 | UWORD32 u4_lambda = ps_proc->u4_lambda; |
| 780 | |
| 781 | /* cost = distortion + lambda*rate */ |
| 782 | WORD32 i4_partition_cost_least, i4_total_cost = (24 + 1) * u4_lambda; |
| 783 | |
| 784 | /* cost due to mbtype */ |
| 785 | UWORD32 u4_cost_one_bit = u4_lambda, u4_cost_four_bits = 4 * u4_lambda; |
| 786 | |
| 787 | /* intra mode */ |
| 788 | UWORD32 u4_best_intra_4x4_mode = DC_I4x4, u4_estimated_intra_4x4_mode; |
| 789 | |
| 790 | /* neighbor pels for intra prediction */ |
| 791 | UWORD8 *pu1_ngbr_pels_i4 = ps_proc->au1_ngbr_pels; |
| 792 | |
| 793 | /* pointer to curr partition */ |
| 794 | UWORD8 *pu1_mb_curr; |
| 795 | |
| 796 | /* pointer to prediction macro block */ |
| 797 | UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb; |
| 798 | |
| 799 | /* strides */ |
| 800 | WORD32 i4_src_strd = ps_proc->i4_src_strd; |
| 801 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 802 | |
| 803 | /* neighbors left, top, top right, top left */ |
| 804 | UWORD8 *pu1_mb_a; |
| 805 | UWORD8 *pu1_mb_b; |
| 806 | UWORD8 *pu1_mb_c; |
| 807 | UWORD8 *pu1_mb_d; |
| 808 | |
| 809 | /* neighbor availability */ |
| 810 | WORD32 i4_ngbr_avbl; |
| 811 | block_neighbors_t s_ngbr_avbl; |
| 812 | |
| 813 | /* temp vars */ |
| 814 | UWORD32 i, b8, b4, u4_blk_x, u4_blk_y, u4_pix_x, u4_pix_y; |
| 815 | |
| 816 | /* scan order inside 4x4 block */ |
| 817 | const UWORD8 u1_scan_order[16] = {0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15}; |
| 818 | |
| 819 | /* ngbr sub mb modes */ |
| 820 | UWORD8 *pu1_top_mb_intra_modes = ps_proc->pu1_top_mb_intra_modes + (ps_proc->i4_mb_x << 4); |
| 821 | mb_info_t *ps_top_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 822 | mb_info_t *ps_top_right_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 823 | |
| 824 | /* valid intra modes map */ |
| 825 | UWORD32 u4_valid_intra_modes; |
| 826 | UWORD16 u2_valid_modes[8] = {4, 262, 4, 262, 141, 399, 141, 511}; |
| 827 | |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 828 | UWORD32 u4_constrained_intra_pred = ps_proc->ps_codec->s_cfg.u4_constrained_intra_pred; |
| 829 | UWORD8 u1_mb_a, u1_mb_b, u1_mb_c, u1_mb_d; |
| 830 | if (ps_proc->ps_ngbr_avbl->u1_mb_c) |
| 831 | { |
| 832 | ps_top_right_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x + 1; |
| 833 | } |
| 834 | /* left pels */ |
| 835 | u1_mb_a = ((ps_proc->ps_ngbr_avbl->u1_mb_a) |
| 836 | && (u4_constrained_intra_pred ? ps_proc->s_left_mb_syntax_ele.u2_is_intra : 1)); |
| 837 | |
| 838 | /* top pels */ |
| 839 | u1_mb_b = ((ps_proc->ps_ngbr_avbl->u1_mb_b) |
| 840 | && (u4_constrained_intra_pred ? ps_top_mb_syn_ele->u2_is_intra : 1)); |
| 841 | |
| 842 | /* topleft pels */ |
| 843 | u1_mb_d = ((ps_proc->ps_ngbr_avbl->u1_mb_d) |
| 844 | && (u4_constrained_intra_pred ? ps_proc->s_top_left_mb_syntax_ele.u2_is_intra : 1)); |
| 845 | |
| 846 | /* top right */ |
| 847 | u1_mb_c = ((ps_proc->ps_ngbr_avbl->u1_mb_c) |
| 848 | && (u4_constrained_intra_pred ? ps_top_right_mb_syn_ele->u2_is_intra : 1)); |
| 849 | |
| 850 | i4_ngbr_avbl = (u1_mb_a) + (u1_mb_d << 1) + (u1_mb_b << 2) + (u1_mb_c << 3); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 851 | memcpy(ps_proc->au1_ngbr_avbl_4x4_subblks, gau1_ih264_4x4_ngbr_avbl[i4_ngbr_avbl], 16); |
| 852 | |
| 853 | for (b8 = 0; b8 < 4; b8++) |
| 854 | { |
| 855 | u4_blk_x = (b8 & 0x01) << 3; |
| 856 | u4_blk_y = (b8 >> 1) << 3; |
| 857 | for (b4 = 0; b4 < 4; b4++) |
| 858 | { |
| 859 | u4_pix_x = u4_blk_x + ((b4 & 0x01) << 2); |
| 860 | u4_pix_y = u4_blk_y + ((b4 >> 1) << 2); |
| 861 | |
| 862 | pu1_mb_curr = ps_proc->pu1_src_buf_luma + u4_pix_x + (u4_pix_y * i4_src_strd); |
| 863 | /* when rdopt is off, we use the input as reference for constructing prediction buffer */ |
| 864 | /* as opposed to using the recon pels. (open loop intra prediction) */ |
| 865 | pu1_mb_a = pu1_mb_curr - 1; /* pointer to left macro block */ |
| 866 | pu1_mb_b = pu1_mb_curr - i4_src_strd; /* pointer to top macro block */ |
| 867 | pu1_mb_c = pu1_mb_b + 4; /* pointer to top macro block */ |
| 868 | pu1_mb_d = pu1_mb_b - 1; /* pointer to top left macro block */ |
| 869 | |
| 870 | /* locating neighbors that are available for prediction */ |
| 871 | /* TODO : update the neighbor availability information basing on constrained intra pred information */ |
| 872 | /* TODO : i4_ngbr_avbl is only being used in DC mode. Can the DC mode be split in to distinct routines */ |
| 873 | /* basing on neighbors available and hence evade the computation of neighbor availability totally. */ |
| 874 | |
| 875 | i4_ngbr_avbl = ps_proc->au1_ngbr_avbl_4x4_subblks[(b8 << 2) + b4]; |
| 876 | s_ngbr_avbl.u1_mb_a = (i4_ngbr_avbl & 0x1); |
| 877 | s_ngbr_avbl.u1_mb_d = (i4_ngbr_avbl & 0x2) >> 1; |
| 878 | s_ngbr_avbl.u1_mb_b = (i4_ngbr_avbl & 0x4) >> 2; |
| 879 | s_ngbr_avbl.u1_mb_c = (i4_ngbr_avbl & 0x8) >> 3; |
| 880 | /* set valid intra modes for evaluation */ |
| 881 | u4_valid_intra_modes = u2_valid_modes[i4_ngbr_avbl & 0x7]; |
| 882 | |
| 883 | /* if top partition is available and top right is not available for intra prediction, then */ |
| 884 | /* padd top right samples using top sample and make top right also available */ |
| 885 | /* i4_ngbr_avbl = (s_ngbr_avbl.u1_mb_a) + (s_ngbr_avbl.u1_mb_d << 1) + (s_ngbr_avbl.u1_mb_b << 2) + ((s_ngbr_avbl.u1_mb_b | s_ngbr_avbl.u1_mb_c) << 3); */ |
| 886 | |
| 887 | /* gather prediction pels from the neighbors */ |
| 888 | if (s_ngbr_avbl.u1_mb_a) |
| 889 | { |
| 890 | for(i = 0; i < 4; i++) |
| 891 | pu1_ngbr_pels_i4[4 - 1 -i] = pu1_mb_a[i * i4_src_strd]; |
| 892 | } |
| 893 | else |
| 894 | { |
| 895 | memset(pu1_ngbr_pels_i4, 0, 4); |
| 896 | } |
| 897 | |
| 898 | if (s_ngbr_avbl.u1_mb_b) |
| 899 | { |
| 900 | memcpy(pu1_ngbr_pels_i4 + 4 + 1, pu1_mb_b, 4); |
| 901 | } |
| 902 | else |
| 903 | { |
| 904 | memset(pu1_ngbr_pels_i4 + 5, 0, 4); |
| 905 | } |
| 906 | |
| 907 | if (s_ngbr_avbl.u1_mb_d) |
| 908 | pu1_ngbr_pels_i4[4] = *pu1_mb_d; |
| 909 | else |
| 910 | pu1_ngbr_pels_i4[4] = 0; |
| 911 | |
| 912 | if (s_ngbr_avbl.u1_mb_c) |
| 913 | { |
| 914 | memcpy(pu1_ngbr_pels_i4 + 8 + 1, pu1_mb_c, 4); |
| 915 | } |
| 916 | else if (s_ngbr_avbl.u1_mb_b) |
| 917 | { |
| 918 | memset(pu1_ngbr_pels_i4 + 8 + 1, pu1_ngbr_pels_i4[8], 4); |
| 919 | s_ngbr_avbl.u1_mb_c = s_ngbr_avbl.u1_mb_b; |
| 920 | } |
| 921 | |
| 922 | i4_partition_cost_least = INT_MAX; |
| 923 | |
| 924 | /* predict the intra 4x4 mode for the current partition (for evaluating cost) */ |
| 925 | if (!s_ngbr_avbl.u1_mb_a || !s_ngbr_avbl.u1_mb_b) |
| 926 | { |
| 927 | u4_estimated_intra_4x4_mode = DC_I4x4; |
| 928 | } |
| 929 | else |
| 930 | { |
| 931 | UWORD32 u4_left_intra_4x4_mode = DC_I4x4; |
| 932 | UWORD32 u4_top_intra_4x4_mode = DC_I4x4; |
| 933 | |
| 934 | if (u4_pix_x == 0) |
| 935 | { |
| 936 | if (ps_proc->s_left_mb_syntax_ele.u2_mb_type == I4x4) |
| 937 | { |
| 938 | u4_left_intra_4x4_mode = ps_proc->au1_left_mb_intra_modes[u1_scan_order[3 + u4_pix_y]]; |
| 939 | } |
| 940 | else if (ps_proc->s_left_mb_syntax_ele.u2_mb_type == I8x8) |
| 941 | { |
| 942 | u4_left_intra_4x4_mode = ps_proc->au1_left_mb_intra_modes[b8 + 1]; |
| 943 | } |
| 944 | } |
| 945 | else |
| 946 | { |
| 947 | u4_left_intra_4x4_mode = ps_proc->au1_intra_luma_mb_4x4_modes[u1_scan_order[(u4_pix_x >> 2) + u4_pix_y - 1]]; |
| 948 | } |
| 949 | |
| 950 | if (u4_pix_y == 0) |
| 951 | { |
| 952 | if (ps_top_mb_syn_ele->u2_mb_type == I4x4) |
| 953 | { |
| 954 | u4_top_intra_4x4_mode = pu1_top_mb_intra_modes[u1_scan_order[12 + (u4_pix_x >> 2)]]; |
| 955 | } |
| 956 | else if (ps_top_mb_syn_ele->u2_mb_type == I8x8) |
| 957 | { |
| 958 | u4_top_intra_4x4_mode = pu1_top_mb_intra_modes[b8 + 2]; |
| 959 | } |
| 960 | } |
| 961 | else |
| 962 | { |
| 963 | u4_top_intra_4x4_mode = ps_proc->au1_intra_luma_mb_4x4_modes[u1_scan_order[(u4_pix_x >> 2) + u4_pix_y - 4]]; |
| 964 | } |
| 965 | |
| 966 | u4_estimated_intra_4x4_mode = MIN(u4_left_intra_4x4_mode, u4_top_intra_4x4_mode); |
| 967 | } |
| 968 | |
| 969 | ps_proc->au1_predicted_intra_luma_mb_4x4_modes[(b8 << 2) + b4] = u4_estimated_intra_4x4_mode; |
| 970 | |
| 971 | /* mode evaluation and prediction */ |
| 972 | ps_codec->pf_ih264e_evaluate_intra_4x4_modes(pu1_mb_curr, |
| 973 | pu1_ngbr_pels_i4, |
| 974 | pu1_pred_mb, i4_src_strd, |
| 975 | i4_pred_strd, i4_ngbr_avbl, |
| 976 | &u4_best_intra_4x4_mode, |
| 977 | &i4_partition_cost_least, |
| 978 | u4_valid_intra_modes, |
| 979 | u4_lambda, |
| 980 | u4_estimated_intra_4x4_mode); |
| 981 | |
| 982 | |
| 983 | i4_partition_distortion_least = i4_partition_cost_least - ((u4_estimated_intra_4x4_mode == u4_best_intra_4x4_mode) ? u4_cost_one_bit : u4_cost_four_bits); |
| 984 | |
| 985 | DEBUG("%d partition cost, %d intra mode\n", i4_partition_cost_least, u4_best_intra_4x4_mode); |
| 986 | /* macroblock distortion */ |
| 987 | i4_total_distortion += i4_partition_distortion_least; |
| 988 | i4_total_cost += i4_partition_cost_least; |
| 989 | /* mb partition mode */ |
| 990 | ps_proc->au1_intra_luma_mb_4x4_modes[(b8 << 2) + b4] = u4_best_intra_4x4_mode; |
| 991 | } |
| 992 | } |
| 993 | |
| 994 | /* update the type of the mb if necessary */ |
| 995 | if (i4_total_cost < ps_proc->i4_mb_cost) |
| 996 | { |
| 997 | ps_proc->i4_mb_cost = i4_total_cost; |
| 998 | ps_proc->i4_mb_distortion = i4_total_distortion; |
| 999 | ps_proc->u4_mb_type = I4x4; |
| 1000 | } |
| 1001 | |
| 1002 | return ; |
| 1003 | } |
| 1004 | |
| 1005 | /** |
| 1006 | ****************************************************************************** |
| 1007 | * |
| 1008 | * @brief evaluate best intra 4x4 mode (rate distortion opt on) |
| 1009 | * |
| 1010 | * @par Description |
| 1011 | * This function evaluates all the possible intra 4x4 modes and finds the mode |
| 1012 | * that best represents the macro-block (least distortion) and occupies fewer |
| 1013 | * bits in the bit-stream. |
| 1014 | * |
| 1015 | * @param[in] ps_proc_ctxt |
| 1016 | * pointer to proc ctxt |
| 1017 | * |
| 1018 | * @remarks |
| 1019 | * Ideally the cost of encoding a macroblock is calculated as |
| 1020 | * (distortion + lambda*rate). Where distortion is SAD/SATD,... between the |
| 1021 | * input block and the reconstructed block and rate is the number of bits taken |
| 1022 | * to place the macroblock in the bit-stream. In this routine the rate does not |
| 1023 | * exactly point to the total number of bits it takes, rather it points to header |
| 1024 | * bits necessary for encoding the macroblock. Assuming the deltaQP, cbp bits |
| 1025 | * and residual bits fall in to texture bits the number of bits taken to encoding |
| 1026 | * mbtype is considered as rate, we compute cost. Further we will approximate |
| 1027 | * the distortion as the deviation b/w input and the predicted block as opposed |
| 1028 | * to input and reconstructed block. |
| 1029 | * |
| 1030 | * NOTE: As per the Document JVT-O079, for the whole intra 4x4 macroblock, |
| 1031 | * 24*lambda is added to the SAD before comparison with the best SAD for |
| 1032 | * inter prediction. This is an empirical value to prevent using too many intra |
| 1033 | * blocks. |
| 1034 | * |
| 1035 | * @return none |
| 1036 | * |
| 1037 | ****************************************************************************** |
| 1038 | */ |
| 1039 | void ih264e_evaluate_intra4x4_modes_for_least_cost_rdopton(process_ctxt_t *ps_proc) |
| 1040 | { |
| 1041 | /* Codec Context */ |
| 1042 | codec_t *ps_codec = ps_proc->ps_codec; |
| 1043 | |
| 1044 | /* SAD(distortion metric) of an 4x4 block */ |
| 1045 | WORD32 i4_partition_distortion_least = INT_MAX, i4_total_distortion = 0; |
| 1046 | |
| 1047 | /* lambda */ |
| 1048 | UWORD32 u4_lambda = ps_proc->u4_lambda; |
| 1049 | |
| 1050 | /* cost = distortion + lambda*rate */ |
| 1051 | WORD32 i4_partition_cost_least, i4_total_cost = (24 + 1) * u4_lambda; |
| 1052 | |
| 1053 | /* cost due to mbtype */ |
| 1054 | UWORD32 u4_cost_one_bit = u4_lambda, u4_cost_four_bits = 4 * u4_lambda; |
| 1055 | |
| 1056 | /* intra mode */ |
| 1057 | UWORD32 u4_best_intra_4x4_mode = DC_I4x4, u4_estimated_intra_4x4_mode; |
| 1058 | |
| 1059 | /* neighbor pels for intra prediction */ |
| 1060 | UWORD8 *pu1_ngbr_pels_i4 = ps_proc->au1_ngbr_pels; |
| 1061 | |
| 1062 | /* pointer to curr partition */ |
| 1063 | UWORD8 *pu1_mb_curr; |
| 1064 | UWORD8 *pu1_mb_ref_left, *pu1_mb_ref_top; |
| 1065 | UWORD8 *pu1_ref_mb_intra_4x4; |
| 1066 | |
| 1067 | /* pointer to residual macro block */ |
| 1068 | WORD16 *pi2_res_mb = ps_proc->pi2_res_buf_intra_4x4; |
| 1069 | |
| 1070 | /* pointer to prediction macro block */ |
| 1071 | UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb; |
| 1072 | |
| 1073 | /* strides */ |
| 1074 | WORD32 i4_src_strd = ps_proc->i4_src_strd; |
| 1075 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 1076 | WORD32 i4_ref_strd_left, i4_ref_strd_top; |
| 1077 | |
| 1078 | /* neighbors left, top, top right, top left */ |
| 1079 | UWORD8 *pu1_mb_a; |
| 1080 | UWORD8 *pu1_mb_b; |
| 1081 | UWORD8 *pu1_mb_c; |
| 1082 | UWORD8 *pu1_mb_d; |
| 1083 | |
| 1084 | /* number of non zero coeffs*/ |
| 1085 | UWORD8 *pu1_nnz = (UWORD8 *)ps_proc->au4_nnz_intra_4x4; |
| 1086 | |
| 1087 | /* quantization parameters */ |
| 1088 | quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0]; |
| 1089 | |
| 1090 | /* neighbor availability */ |
| 1091 | WORD32 i4_ngbr_avbl; |
| 1092 | block_neighbors_t s_ngbr_avbl; |
| 1093 | |
| 1094 | /* temp vars */ |
| 1095 | UWORD32 i, b8, b4, u4_blk_x, u4_blk_y, u4_pix_x, u4_pix_y; |
| 1096 | |
| 1097 | /* scan order inside 4x4 block */ |
| 1098 | const UWORD8 u1_scan_order[16] = {0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15}; |
| 1099 | |
| 1100 | /* ngbr sub mb modes */ |
| 1101 | UWORD8 *pu1_top_mb_intra_modes = ps_proc->pu1_top_mb_intra_modes + (ps_proc->i4_mb_x << 4); |
| 1102 | mb_info_t *ps_top_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1103 | mb_info_t *ps_top_right_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1104 | |
| 1105 | /* valid intra modes map */ |
| 1106 | UWORD32 u4_valid_intra_modes; |
| 1107 | UWORD16 u2_valid_modes[8] = {4, 262, 4, 262, 141, 399, 141, 511}; |
| 1108 | |
| 1109 | /* Dummy variable for 4x4 trans function */ |
| 1110 | WORD16 i2_dc_dummy; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1111 | UWORD8 u1_mb_a, u1_mb_b, u1_mb_c, u1_mb_d; |
| 1112 | UWORD32 u4_constrained_intra_pred = ps_proc->ps_codec->s_cfg.u4_constrained_intra_pred; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1113 | |
| 1114 | /* compute ngbr availability for sub blks */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1115 | if (ps_proc->ps_ngbr_avbl->u1_mb_c) |
| 1116 | { |
| 1117 | ps_top_right_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + (ps_proc->i4_mb_x + 1); |
| 1118 | } |
| 1119 | |
| 1120 | /* left pels */ |
| 1121 | u1_mb_a = ((ps_proc->ps_ngbr_avbl->u1_mb_a) |
| 1122 | && (u4_constrained_intra_pred ? ps_proc->s_left_mb_syntax_ele.u2_is_intra : 1)); |
| 1123 | |
| 1124 | /* top pels */ |
| 1125 | u1_mb_b = ((ps_proc->ps_ngbr_avbl->u1_mb_b) |
| 1126 | && (u4_constrained_intra_pred ? ps_top_mb_syn_ele->u2_is_intra : 1)); |
| 1127 | |
| 1128 | /* topleft pels */ |
| 1129 | u1_mb_d = ((ps_proc->ps_ngbr_avbl->u1_mb_d) |
| 1130 | && (u4_constrained_intra_pred ? ps_proc->s_top_left_mb_syntax_ele.u2_is_intra : 1)); |
| 1131 | |
| 1132 | /* top right pels */ |
| 1133 | u1_mb_c = ((ps_proc->ps_ngbr_avbl->u1_mb_c) |
| 1134 | && (u4_constrained_intra_pred ? ps_top_right_mb_syn_ele->u2_is_intra : 1)); |
| 1135 | |
| 1136 | i4_ngbr_avbl = (u1_mb_a) + (u1_mb_d << 1) + (u1_mb_b << 2) + (u1_mb_c << 3); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1137 | memcpy(ps_proc->au1_ngbr_avbl_4x4_subblks, gau1_ih264_4x4_ngbr_avbl[i4_ngbr_avbl], 16); |
| 1138 | |
| 1139 | for(b8 = 0; b8 < 4; b8++) |
| 1140 | { |
| 1141 | u4_blk_x = (b8 & 0x01) << 3; |
| 1142 | u4_blk_y = (b8 >> 1) << 3; |
| 1143 | for(b4 = 0; b4 < 4; b4++, pu1_nnz++, pi2_res_mb += MB_SIZE) |
| 1144 | { |
| 1145 | u4_pix_x = u4_blk_x + ((b4 & 0x01) << 2); |
| 1146 | u4_pix_y = u4_blk_y + ((b4 >> 1) << 2); |
| 1147 | |
| 1148 | pu1_ref_mb_intra_4x4 = ps_proc->pu1_ref_mb_intra_4x4 + u4_pix_x + (u4_pix_y * i4_pred_strd); |
| 1149 | pu1_mb_curr = ps_proc->pu1_src_buf_luma + u4_pix_x + (u4_pix_y * i4_src_strd); |
| 1150 | if (u4_pix_x == 0) |
| 1151 | { |
| 1152 | i4_ref_strd_left = ps_proc->i4_rec_strd; |
| 1153 | pu1_mb_ref_left = ps_proc->pu1_rec_buf_luma + u4_pix_x + (u4_pix_y * i4_ref_strd_left); |
| 1154 | } |
| 1155 | else |
| 1156 | { |
| 1157 | i4_ref_strd_left = i4_pred_strd; |
| 1158 | pu1_mb_ref_left = pu1_ref_mb_intra_4x4; |
| 1159 | } |
| 1160 | if (u4_pix_y == 0) |
| 1161 | { |
| 1162 | i4_ref_strd_top = ps_proc->i4_rec_strd; |
| 1163 | pu1_mb_ref_top = ps_proc->pu1_rec_buf_luma + u4_pix_x + (u4_pix_y * i4_ref_strd_top); |
| 1164 | } |
| 1165 | else |
| 1166 | { |
| 1167 | i4_ref_strd_top = i4_pred_strd; |
| 1168 | pu1_mb_ref_top = pu1_ref_mb_intra_4x4; |
| 1169 | } |
| 1170 | |
| 1171 | pu1_mb_a = pu1_mb_ref_left - 1; /* pointer to left macro block */ |
| 1172 | pu1_mb_b = pu1_mb_ref_top - i4_ref_strd_top; /* pointer to top macro block */ |
| 1173 | pu1_mb_c = pu1_mb_b + 4; /* pointer to top right macro block */ |
| 1174 | if (u4_pix_y == 0) |
| 1175 | pu1_mb_d = pu1_mb_b - 1; |
| 1176 | else |
| 1177 | pu1_mb_d = pu1_mb_a - i4_ref_strd_left; /* pointer to top left macro block */ |
| 1178 | |
| 1179 | /* locating neighbors that are available for prediction */ |
| 1180 | /* TODO : update the neighbor availability information basing on constrained intra pred information */ |
| 1181 | /* TODO : i4_ngbr_avbl is only being used in DC mode. Can the DC mode be split in to distinct routines */ |
| 1182 | /* basing on neighbors available and hence evade the computation of neighbor availability totally. */ |
| 1183 | |
| 1184 | i4_ngbr_avbl = ps_proc->au1_ngbr_avbl_4x4_subblks[(b8 << 2) + b4]; |
| 1185 | s_ngbr_avbl.u1_mb_a = (i4_ngbr_avbl & 0x1); |
| 1186 | s_ngbr_avbl.u1_mb_d = (i4_ngbr_avbl & 0x2) >> 1; |
| 1187 | s_ngbr_avbl.u1_mb_b = (i4_ngbr_avbl & 0x4) >> 2; |
| 1188 | s_ngbr_avbl.u1_mb_c = (i4_ngbr_avbl & 0x8) >> 3; |
| 1189 | /* set valid intra modes for evaluation */ |
| 1190 | u4_valid_intra_modes = u2_valid_modes[i4_ngbr_avbl & 0x7]; |
| 1191 | |
| 1192 | /* if top partition is available and top right is not available for intra prediction, then */ |
| 1193 | /* padd top right samples using top sample and make top right also available */ |
| 1194 | /* i4_ngbr_avbl = (s_ngbr_avbl.u1_mb_a) + (s_ngbr_avbl.u1_mb_d << 1) + (s_ngbr_avbl.u1_mb_b << 2) + ((s_ngbr_avbl.u1_mb_b | s_ngbr_avbl.u1_mb_c) << 3); */ |
| 1195 | |
| 1196 | /* gather prediction pels from the neighbors */ |
| 1197 | if (s_ngbr_avbl.u1_mb_a) |
| 1198 | { |
| 1199 | for(i = 0; i < 4; i++) |
| 1200 | pu1_ngbr_pels_i4[4 - 1 -i] = pu1_mb_a[i * i4_ref_strd_left]; |
| 1201 | } |
| 1202 | else |
| 1203 | { |
| 1204 | memset(pu1_ngbr_pels_i4,0,4); |
| 1205 | } |
| 1206 | if(s_ngbr_avbl.u1_mb_b) |
| 1207 | { |
| 1208 | memcpy(pu1_ngbr_pels_i4 + 4 + 1, pu1_mb_b, 4); |
| 1209 | } |
| 1210 | else |
| 1211 | { |
| 1212 | memset(pu1_ngbr_pels_i4 + 4 + 1, 0, 4); |
| 1213 | } |
| 1214 | if (s_ngbr_avbl.u1_mb_d) |
| 1215 | pu1_ngbr_pels_i4[4] = *pu1_mb_d; |
| 1216 | else |
| 1217 | pu1_ngbr_pels_i4[4] = 0; |
| 1218 | if (s_ngbr_avbl.u1_mb_c) |
| 1219 | { |
| 1220 | memcpy(pu1_ngbr_pels_i4 + 8 + 1, pu1_mb_c, 4); |
| 1221 | } |
| 1222 | else if (s_ngbr_avbl.u1_mb_b) |
| 1223 | { |
| 1224 | memset(pu1_ngbr_pels_i4 + 8 + 1, pu1_ngbr_pels_i4[8], 4); |
| 1225 | s_ngbr_avbl.u1_mb_c = s_ngbr_avbl.u1_mb_b; |
| 1226 | } |
| 1227 | |
| 1228 | i4_partition_cost_least = INT_MAX; |
| 1229 | |
| 1230 | /* predict the intra 4x4 mode for the current partition (for evaluating cost) */ |
| 1231 | if (!s_ngbr_avbl.u1_mb_a || !s_ngbr_avbl.u1_mb_b) |
| 1232 | { |
| 1233 | u4_estimated_intra_4x4_mode = DC_I4x4; |
| 1234 | } |
| 1235 | else |
| 1236 | { |
| 1237 | UWORD32 u4_left_intra_4x4_mode = DC_I4x4; |
| 1238 | UWORD32 u4_top_intra_4x4_mode = DC_I4x4; |
| 1239 | |
| 1240 | if (u4_pix_x == 0) |
| 1241 | { |
| 1242 | if (ps_proc->s_left_mb_syntax_ele.u2_mb_type == I4x4) |
| 1243 | { |
| 1244 | u4_left_intra_4x4_mode = ps_proc->au1_left_mb_intra_modes[u1_scan_order[3 + u4_pix_y]]; |
| 1245 | } |
| 1246 | else if (ps_proc->s_left_mb_syntax_ele.u2_mb_type == I8x8) |
| 1247 | { |
| 1248 | u4_left_intra_4x4_mode = ps_proc->au1_left_mb_intra_modes[b8 + 1]; |
| 1249 | } |
| 1250 | } |
| 1251 | else |
| 1252 | { |
| 1253 | u4_left_intra_4x4_mode = ps_proc->au1_intra_luma_mb_4x4_modes[u1_scan_order[(u4_pix_x >> 2) + u4_pix_y - 1]]; |
| 1254 | } |
| 1255 | |
| 1256 | if (u4_pix_y == 0) |
| 1257 | { |
| 1258 | if (ps_top_mb_syn_ele->u2_mb_type == I4x4) |
| 1259 | { |
| 1260 | u4_top_intra_4x4_mode = pu1_top_mb_intra_modes[u1_scan_order[12 + (u4_pix_x >> 2)]]; |
| 1261 | } |
| 1262 | else if (ps_top_mb_syn_ele->u2_mb_type == I8x8) |
| 1263 | { |
| 1264 | u4_top_intra_4x4_mode = pu1_top_mb_intra_modes[b8 + 2]; |
| 1265 | } |
| 1266 | } |
| 1267 | else |
| 1268 | { |
| 1269 | u4_top_intra_4x4_mode = ps_proc->au1_intra_luma_mb_4x4_modes[u1_scan_order[(u4_pix_x >> 2) + u4_pix_y - 4]]; |
| 1270 | } |
| 1271 | |
| 1272 | u4_estimated_intra_4x4_mode = MIN(u4_left_intra_4x4_mode, u4_top_intra_4x4_mode); |
| 1273 | } |
| 1274 | |
| 1275 | ps_proc->au1_predicted_intra_luma_mb_4x4_modes[(b8 << 2) + b4] = u4_estimated_intra_4x4_mode; |
| 1276 | |
| 1277 | /*mode evaluation and prediction*/ |
| 1278 | ps_codec->pf_ih264e_evaluate_intra_4x4_modes(pu1_mb_curr, |
| 1279 | pu1_ngbr_pels_i4, |
| 1280 | pu1_pred_mb, i4_src_strd, |
| 1281 | i4_pred_strd, i4_ngbr_avbl, |
| 1282 | &u4_best_intra_4x4_mode, |
| 1283 | &i4_partition_cost_least, |
| 1284 | u4_valid_intra_modes, |
| 1285 | u4_lambda, |
| 1286 | u4_estimated_intra_4x4_mode); |
| 1287 | |
| 1288 | |
| 1289 | i4_partition_distortion_least = i4_partition_cost_least - ((u4_estimated_intra_4x4_mode == u4_best_intra_4x4_mode)?u4_cost_one_bit:u4_cost_four_bits); |
| 1290 | |
| 1291 | DEBUG("%d partition cost, %d intra mode\n", i4_partition_cost_least, u4_best_intra_4x4_mode); |
| 1292 | |
| 1293 | /* macroblock distortion */ |
| 1294 | i4_total_distortion += i4_partition_distortion_least; |
| 1295 | i4_total_cost += i4_partition_cost_least; |
| 1296 | |
| 1297 | /* mb partition mode */ |
| 1298 | ps_proc->au1_intra_luma_mb_4x4_modes[(b8 << 2) + b4] = u4_best_intra_4x4_mode; |
| 1299 | |
| 1300 | |
| 1301 | /********************************************************/ |
| 1302 | /* error estimation, */ |
| 1303 | /* transform */ |
| 1304 | /* quantization */ |
| 1305 | /********************************************************/ |
| 1306 | ps_codec->pf_resi_trans_quant_4x4(pu1_mb_curr, pu1_pred_mb, |
| 1307 | pi2_res_mb, i4_src_strd, |
| 1308 | i4_pred_strd, |
| 1309 | /* No op stride, this implies a buff of lenght 1x16 */ |
| 1310 | ps_qp_params->pu2_scale_mat, |
| 1311 | ps_qp_params->pu2_thres_mat, |
| 1312 | ps_qp_params->u1_qbits, |
| 1313 | ps_qp_params->u4_dead_zone, |
| 1314 | pu1_nnz, &i2_dc_dummy); |
| 1315 | |
| 1316 | /********************************************************/ |
| 1317 | /* ierror estimation, */ |
| 1318 | /* itransform */ |
| 1319 | /* iquantization */ |
| 1320 | /********************************************************/ |
| 1321 | ps_codec->pf_iquant_itrans_recon_4x4(pi2_res_mb, pu1_pred_mb, |
| 1322 | pu1_ref_mb_intra_4x4, |
| 1323 | i4_pred_strd, i4_pred_strd, |
| 1324 | ps_qp_params->pu2_iscale_mat, |
| 1325 | ps_qp_params->pu2_weigh_mat, |
| 1326 | ps_qp_params->u1_qp_div, |
| 1327 | ps_proc->pv_scratch_buff, 0, |
| 1328 | NULL); |
| 1329 | } |
| 1330 | } |
| 1331 | |
| 1332 | /* update the type of the mb if necessary */ |
| 1333 | if (i4_total_cost < ps_proc->i4_mb_cost) |
| 1334 | { |
| 1335 | ps_proc->i4_mb_cost = i4_total_cost; |
| 1336 | ps_proc->i4_mb_distortion = i4_total_distortion; |
| 1337 | ps_proc->u4_mb_type = I4x4; |
| 1338 | } |
| 1339 | |
| 1340 | return ; |
| 1341 | } |
| 1342 | |
| 1343 | /** |
| 1344 | ****************************************************************************** |
| 1345 | * |
| 1346 | * @brief |
| 1347 | * evaluate best chroma intra 8x8 mode (rate distortion opt off) |
| 1348 | * |
| 1349 | * @par Description |
| 1350 | * This function evaluates all the possible chroma intra 8x8 modes and finds |
| 1351 | * the mode that best represents the macroblock (least distortion) and occupies |
| 1352 | * fewer bits in the bitstream. |
| 1353 | * |
| 1354 | * @param[in] ps_proc_ctxt |
| 1355 | * pointer to macroblock context (handle) |
| 1356 | * |
| 1357 | * @remarks |
| 1358 | * For chroma best intra pred mode is calculated based only on SAD |
| 1359 | * |
| 1360 | * @returns none |
| 1361 | * |
| 1362 | ****************************************************************************** |
| 1363 | */ |
| 1364 | |
| 1365 | void ih264e_evaluate_chroma_intra8x8_modes_for_least_cost_rdoptoff(process_ctxt_t *ps_proc) |
| 1366 | { |
| 1367 | /* Codec Context */ |
| 1368 | codec_t *ps_codec = ps_proc->ps_codec; |
| 1369 | |
| 1370 | /* SAD(distortion metric) of an 8x8 block */ |
| 1371 | WORD32 i4_mb_distortion, i4_chroma_mb_distortion; |
| 1372 | |
| 1373 | /* intra mode */ |
| 1374 | UWORD32 u4_best_chroma_intra_8x8_mode = DC_CH_I8x8; |
| 1375 | |
| 1376 | /* neighbor pels for intra prediction */ |
| 1377 | UWORD8 *pu1_ngbr_pels_c_i8x8 = ps_proc->au1_ngbr_pels; |
| 1378 | |
| 1379 | /* pointer to curr macro block */ |
| 1380 | UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_chroma; |
| 1381 | UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_chroma; |
| 1382 | |
| 1383 | /* pointer to prediction macro block */ |
| 1384 | UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb_intra_chroma; |
| 1385 | UWORD8 *pu1_pred_mb_plane = ps_proc->pu1_pred_mb_intra_chroma_plane; |
| 1386 | |
| 1387 | /* strides */ |
Martin Storsjo | 53c6878 | 2015-06-09 16:25:51 +0300 | [diff] [blame] | 1388 | WORD32 i4_src_strd_c = ps_proc->i4_src_chroma_strd; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1389 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 1390 | WORD32 i4_rec_strd_c = ps_proc->i4_rec_strd; |
| 1391 | |
| 1392 | /* neighbors left, top, top left */ |
| 1393 | UWORD8 *pu1_mb_a = pu1_ref_mb - 2; |
| 1394 | UWORD8 *pu1_mb_b = pu1_ref_mb - i4_rec_strd_c; |
| 1395 | UWORD8 *pu1_mb_d = pu1_mb_b - 2; |
| 1396 | |
| 1397 | /* neighbor availability */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1398 | const UWORD8 u1_valid_intra_modes[8] = {1, 3, 1, 3, 5, 7, 5, 15}; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1399 | WORD32 i4_ngbr_avbl; |
| 1400 | |
| 1401 | /* valid intra modes map */ |
| 1402 | UWORD32 u4_valid_intra_modes; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1403 | mb_info_t *ps_top_mb_syn_ele = ps_proc->ps_top_row_mb_syntax_ele + ps_proc->i4_mb_x; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1404 | |
| 1405 | /* temp var */ |
| 1406 | UWORD8 i; |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1407 | UWORD32 u4_constrained_intra_pred = ps_proc->ps_codec->s_cfg.u4_constrained_intra_pred; |
| 1408 | UWORD8 u1_mb_a, u1_mb_b, u1_mb_d; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1409 | /* locating neighbors that are available for prediction */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1410 | |
| 1411 | /* gather prediction pels from the neighbors */ |
| 1412 | /* left pels */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1413 | u1_mb_a = ((ps_proc->ps_ngbr_avbl->u1_mb_a) |
| 1414 | && (u4_constrained_intra_pred ? ps_proc->s_left_mb_syntax_ele.u2_is_intra : 1)); |
| 1415 | if (u1_mb_a) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1416 | { |
| 1417 | for (i = 0; i < 16; i += 2) |
| 1418 | { |
| 1419 | pu1_ngbr_pels_c_i8x8[16 - 2 - i] = pu1_mb_a[(i / 2) * i4_rec_strd_c]; |
| 1420 | pu1_ngbr_pels_c_i8x8[16 - 1 - i] = pu1_mb_a[(i / 2) * i4_rec_strd_c + 1]; |
| 1421 | } |
| 1422 | } |
| 1423 | else |
| 1424 | { |
| 1425 | ps_codec->pf_mem_set_mul8(pu1_ngbr_pels_c_i8x8, 0, MB_SIZE); |
| 1426 | } |
| 1427 | |
| 1428 | /* top pels */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1429 | u1_mb_b = ((ps_proc->ps_ngbr_avbl->u1_mb_b) |
| 1430 | && (u4_constrained_intra_pred ? ps_top_mb_syn_ele->u2_is_intra : 1)); |
| 1431 | if (u1_mb_b) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1432 | { |
| 1433 | ps_codec->pf_mem_cpy_mul8(&pu1_ngbr_pels_c_i8x8[18], pu1_mb_b, 16); |
| 1434 | } |
| 1435 | else |
| 1436 | { |
| 1437 | ps_codec->pf_mem_set_mul8((pu1_ngbr_pels_c_i8x8 + 18), 0, MB_SIZE); |
| 1438 | } |
| 1439 | |
| 1440 | /* top left pels */ |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1441 | u1_mb_d = ((ps_proc->ps_ngbr_avbl->u1_mb_d) |
| 1442 | && (u4_constrained_intra_pred ? ps_proc->s_top_left_mb_syntax_ele.u2_is_intra : 1)); |
| 1443 | if (u1_mb_d) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1444 | { |
| 1445 | pu1_ngbr_pels_c_i8x8[16] = *pu1_mb_d; |
| 1446 | pu1_ngbr_pels_c_i8x8[17] = *(pu1_mb_d + 1); |
| 1447 | } |
Doney Alex | 8668fbc | 2016-02-24 12:00:03 +0530 | [diff] [blame] | 1448 | i4_ngbr_avbl = (u1_mb_a) + (u1_mb_b << 2) + (u1_mb_d << 1); |
| 1449 | ps_proc->i4_chroma_neighbor_avail_8x8_mb = i4_ngbr_avbl; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1450 | |
| 1451 | u4_valid_intra_modes = u1_valid_intra_modes[i4_ngbr_avbl]; |
| 1452 | |
Ram Mohan | 91a6cef | 2017-11-27 17:58:58 +0530 | [diff] [blame] | 1453 | if (ps_codec->s_cfg.u4_enc_speed_preset == IVE_FAST || |
| 1454 | ps_codec->s_cfg.u4_enc_speed_preset == IVE_FASTEST) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1455 | u4_valid_intra_modes &= ~(1 << PLANE_CH_I8x8); |
| 1456 | |
| 1457 | i4_chroma_mb_distortion = INT_MAX; |
| 1458 | |
| 1459 | /* perform intra mode chroma 8x8 evaluation */ |
| 1460 | /* intra prediction */ |
| 1461 | ps_codec->pf_ih264e_evaluate_intra_chroma_modes(pu1_curr_mb, |
| 1462 | pu1_ngbr_pels_c_i8x8, |
| 1463 | pu1_pred_mb, |
| 1464 | i4_src_strd_c, |
| 1465 | i4_pred_strd, |
| 1466 | i4_ngbr_avbl, |
| 1467 | &u4_best_chroma_intra_8x8_mode, |
| 1468 | &i4_chroma_mb_distortion, |
| 1469 | u4_valid_intra_modes); |
| 1470 | |
| 1471 | if (u4_valid_intra_modes & 8)/* if Chroma PLANE is valid*/ |
| 1472 | { |
| 1473 | (ps_codec->apf_intra_pred_c)[PLANE_CH_I8x8](pu1_ngbr_pels_c_i8x8, pu1_pred_mb_plane, 0, i4_pred_strd, i4_ngbr_avbl); |
| 1474 | |
| 1475 | /* evaluate distortion(sad) */ |
| 1476 | ps_codec->pf_compute_sad_16x8(pu1_curr_mb, pu1_pred_mb_plane, i4_src_strd_c, i4_pred_strd, i4_chroma_mb_distortion, &i4_mb_distortion); |
| 1477 | |
| 1478 | /* update the least distortion information if necessary */ |
| 1479 | if(i4_mb_distortion < i4_chroma_mb_distortion) |
| 1480 | { |
| 1481 | i4_chroma_mb_distortion = i4_mb_distortion; |
| 1482 | u4_best_chroma_intra_8x8_mode = PLANE_CH_I8x8; |
| 1483 | } |
| 1484 | } |
| 1485 | |
| 1486 | DEBUG("%d partition cost, %d intra mode\n", i4_chroma_mb_distortion, u4_best_chroma_intra_8x8_mode); |
| 1487 | |
| 1488 | ps_proc->u1_c_i8_mode = u4_best_chroma_intra_8x8_mode; |
| 1489 | |
| 1490 | return ; |
| 1491 | } |
| 1492 | |
| 1493 | |
| 1494 | /** |
| 1495 | ****************************************************************************** |
| 1496 | * |
| 1497 | * @brief |
| 1498 | * Evaluate best intra 16x16 mode (among VERT, HORZ and DC) and do the |
| 1499 | * prediction. |
| 1500 | * |
| 1501 | * @par Description |
| 1502 | * This function evaluates first three 16x16 modes and compute corresponding sad |
| 1503 | * and return the buffer predicted with best mode. |
| 1504 | * |
| 1505 | * @param[in] pu1_src |
| 1506 | * UWORD8 pointer to the source |
| 1507 | * |
| 1508 | * @param[in] pu1_ngbr_pels_i16 |
| 1509 | * UWORD8 pointer to neighbouring pels |
| 1510 | * |
| 1511 | * @param[out] pu1_dst |
| 1512 | * UWORD8 pointer to the destination |
| 1513 | * |
| 1514 | * @param[in] src_strd |
| 1515 | * integer source stride |
| 1516 | * |
| 1517 | * @param[in] dst_strd |
| 1518 | * integer destination stride |
| 1519 | * |
| 1520 | * @param[in] u4_n_avblty |
| 1521 | * availability of neighbouring pixels |
| 1522 | * |
| 1523 | * @param[in] u4_intra_mode |
| 1524 | * Pointer to the variable in which best mode is returned |
| 1525 | * |
| 1526 | * @param[in] pu4_sadmin |
| 1527 | * Pointer to the variable in which minimum sad is returned |
| 1528 | * |
| 1529 | * @param[in] u4_valid_intra_modes |
| 1530 | * Says what all modes are valid |
| 1531 | * |
| 1532 | * @returns none |
| 1533 | * |
| 1534 | ****************************************************************************** |
| 1535 | */ |
| 1536 | void ih264e_evaluate_intra16x16_modes(UWORD8 *pu1_src, |
| 1537 | UWORD8 *pu1_ngbr_pels_i16, |
| 1538 | UWORD8 *pu1_dst, |
| 1539 | UWORD32 src_strd, |
| 1540 | UWORD32 dst_strd, |
| 1541 | WORD32 u4_n_avblty, |
| 1542 | UWORD32 *u4_intra_mode, |
| 1543 | WORD32 *pu4_sadmin, |
| 1544 | UWORD32 u4_valid_intra_modes) |
| 1545 | { |
| 1546 | UWORD8 *pu1_neighbour; |
| 1547 | UWORD8 *pu1_src_temp = pu1_src; |
| 1548 | UWORD8 left = 0, top = 0; |
| 1549 | WORD32 u4_dcval = 0; |
| 1550 | WORD32 i, j; |
| 1551 | WORD32 i4_sad_vert = INT_MAX, i4_sad_horz = INT_MAX, i4_sad_dc = INT_MAX, |
| 1552 | i4_min_sad = INT_MAX; |
| 1553 | UWORD8 val; |
| 1554 | |
| 1555 | left = (u4_n_avblty & LEFT_MB_AVAILABLE_MASK); |
| 1556 | top = (u4_n_avblty & TOP_MB_AVAILABLE_MASK) >> 2; |
| 1557 | |
| 1558 | /* left available */ |
| 1559 | if (left) |
| 1560 | { |
| 1561 | i4_sad_horz = 0; |
| 1562 | |
| 1563 | for (i = 0; i < 16; i++) |
| 1564 | { |
| 1565 | val = pu1_ngbr_pels_i16[15 - i]; |
| 1566 | |
| 1567 | u4_dcval += val; |
| 1568 | |
| 1569 | for (j = 0; j < 16; j++) |
| 1570 | { |
| 1571 | i4_sad_horz += ABS(val - pu1_src_temp[j]); |
| 1572 | } |
| 1573 | |
| 1574 | pu1_src_temp += src_strd; |
| 1575 | } |
| 1576 | u4_dcval += 8; |
| 1577 | } |
| 1578 | |
| 1579 | pu1_src_temp = pu1_src; |
| 1580 | /* top available */ |
| 1581 | if (top) |
| 1582 | { |
| 1583 | i4_sad_vert = 0; |
| 1584 | |
| 1585 | for (i = 0; i < 16; i++) |
| 1586 | { |
| 1587 | u4_dcval += pu1_ngbr_pels_i16[17 + i]; |
| 1588 | |
| 1589 | for (j = 0; j < 16; j++) |
| 1590 | { |
| 1591 | i4_sad_vert += ABS(pu1_ngbr_pels_i16[17 + j] - pu1_src_temp[j]); |
| 1592 | } |
| 1593 | pu1_src_temp += src_strd; |
| 1594 | |
| 1595 | } |
| 1596 | u4_dcval += 8; |
| 1597 | } |
| 1598 | |
| 1599 | u4_dcval = (u4_dcval) >> (3 + left + top); |
| 1600 | |
| 1601 | pu1_src_temp = pu1_src; |
| 1602 | |
| 1603 | /* none available */ |
| 1604 | u4_dcval += (left == 0) * (top == 0) * 128; |
| 1605 | |
| 1606 | i4_sad_dc = 0; |
| 1607 | |
| 1608 | for (i = 0; i < 16; i++) |
| 1609 | { |
| 1610 | for (j = 0; j < 16; j++) |
| 1611 | { |
| 1612 | i4_sad_dc += ABS(u4_dcval - pu1_src_temp[j]); |
| 1613 | } |
| 1614 | pu1_src_temp += src_strd; |
| 1615 | } |
| 1616 | |
| 1617 | if ((u4_valid_intra_modes & 04) == 0)/* If DC is disabled */ |
| 1618 | i4_sad_dc = INT_MAX; |
| 1619 | |
| 1620 | if ((u4_valid_intra_modes & 01) == 0)/* If VERT is disabled */ |
| 1621 | i4_sad_vert = INT_MAX; |
| 1622 | |
| 1623 | if ((u4_valid_intra_modes & 02) == 0)/* If HORZ is disabled */ |
| 1624 | i4_sad_horz = INT_MAX; |
| 1625 | |
| 1626 | i4_min_sad = MIN3(i4_sad_horz, i4_sad_dc, i4_sad_vert); |
| 1627 | |
| 1628 | /* Finding Minimum sad and doing corresponding prediction */ |
| 1629 | if (i4_min_sad < *pu4_sadmin) |
| 1630 | { |
| 1631 | *pu4_sadmin = i4_min_sad; |
| 1632 | if (i4_min_sad == i4_sad_vert) |
| 1633 | { |
| 1634 | *u4_intra_mode = VERT_I16x16; |
| 1635 | pu1_neighbour = pu1_ngbr_pels_i16 + 17; |
| 1636 | for (j = 0; j < 16; j++) |
| 1637 | { |
| 1638 | memcpy(pu1_dst, pu1_neighbour, MB_SIZE); |
| 1639 | pu1_dst += dst_strd; |
| 1640 | } |
| 1641 | } |
| 1642 | else if (i4_min_sad == i4_sad_horz) |
| 1643 | { |
| 1644 | *u4_intra_mode = HORZ_I16x16; |
| 1645 | for (j = 0; j < 16; j++) |
| 1646 | { |
| 1647 | val = pu1_ngbr_pels_i16[15 - j]; |
| 1648 | memset(pu1_dst, val, MB_SIZE); |
| 1649 | pu1_dst += dst_strd; |
| 1650 | } |
| 1651 | } |
| 1652 | else |
| 1653 | { |
| 1654 | *u4_intra_mode = DC_I16x16; |
| 1655 | for (j = 0; j < 16; j++) |
| 1656 | { |
| 1657 | memset(pu1_dst, u4_dcval, MB_SIZE); |
| 1658 | pu1_dst += dst_strd; |
| 1659 | } |
| 1660 | } |
| 1661 | } |
| 1662 | return; |
| 1663 | } |
| 1664 | |
| 1665 | /** |
| 1666 | ****************************************************************************** |
| 1667 | * |
| 1668 | * @brief |
| 1669 | * Evaluate best intra 4x4 mode and perform prediction. |
| 1670 | * |
| 1671 | * @par Description |
| 1672 | * This function evaluates 4x4 modes and compute corresponding sad |
| 1673 | * and return the buffer predicted with best mode. |
| 1674 | * |
| 1675 | * @param[in] pu1_src |
| 1676 | * UWORD8 pointer to the source |
| 1677 | * |
| 1678 | * @param[in] pu1_ngbr_pels |
| 1679 | * UWORD8 pointer to neighbouring pels |
| 1680 | * |
| 1681 | * @param[out] pu1_dst |
| 1682 | * UWORD8 pointer to the destination |
| 1683 | * |
| 1684 | * @param[in] src_strd |
| 1685 | * integer source stride |
| 1686 | * |
| 1687 | * @param[in] dst_strd |
| 1688 | * integer destination stride |
| 1689 | * |
| 1690 | * @param[in] u4_n_avblty |
| 1691 | * availability of neighbouring pixels |
| 1692 | * |
| 1693 | * @param[in] u4_intra_mode |
| 1694 | * Pointer to the variable in which best mode is returned |
| 1695 | * |
| 1696 | * @param[in] pu4_sadmin |
| 1697 | * Pointer to the variable in which minimum cost is returned |
| 1698 | * |
| 1699 | * @param[in] u4_valid_intra_modes |
| 1700 | * Says what all modes are valid |
| 1701 | * |
| 1702 | * @param[in] u4_lambda |
| 1703 | * Lamda value for computing cost from SAD |
| 1704 | * |
| 1705 | * @param[in] u4_predictd_mode |
| 1706 | * Predicted mode for cost computation |
| 1707 | * |
| 1708 | * @returns none |
| 1709 | * |
| 1710 | ****************************************************************************** |
| 1711 | */ |
| 1712 | void ih264e_evaluate_intra_4x4_modes(UWORD8 *pu1_src, |
| 1713 | UWORD8 *pu1_ngbr_pels, |
| 1714 | UWORD8 *pu1_dst, |
| 1715 | UWORD32 src_strd, |
| 1716 | UWORD32 dst_strd, |
| 1717 | WORD32 u4_n_avblty, |
| 1718 | UWORD32 *u4_intra_mode, |
| 1719 | WORD32 *pu4_sadmin, |
| 1720 | UWORD32 u4_valid_intra_modes, |
| 1721 | UWORD32 u4_lambda, |
| 1722 | UWORD32 u4_predictd_mode) |
| 1723 | { |
| 1724 | UWORD8 *pu1_src_temp = pu1_src; |
| 1725 | UWORD8 *pu1_pred = pu1_ngbr_pels; |
| 1726 | UWORD8 left = 0, top = 0; |
| 1727 | UWORD8 u1_pred_val = 0; |
| 1728 | UWORD8 u1_pred_vals[4] = {0}; |
| 1729 | UWORD8 *pu1_pred_val = NULL; |
| 1730 | /* To store FILT121 operated values*/ |
| 1731 | UWORD8 u1_pred_vals_diag_121[15] = {0}; |
| 1732 | /* To store FILT11 operated values*/ |
| 1733 | UWORD8 u1_pred_vals_diag_11[15] = {0}; |
| 1734 | UWORD8 u1_pred_vals_vert_r[8] = {0}; |
| 1735 | UWORD8 u1_pred_vals_horz_d[10] = {0}; |
| 1736 | UWORD8 u1_pred_vals_horz_u[10] = {0}; |
| 1737 | WORD32 u4_dcval = 0; |
| 1738 | WORD32 i4_sad[MAX_I4x4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, |
| 1739 | INT_MAX, INT_MAX, INT_MAX, INT_MAX}; |
| 1740 | |
| 1741 | WORD32 i4_cost[MAX_I4x4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, |
| 1742 | INT_MAX, INT_MAX, INT_MAX, INT_MAX}; |
| 1743 | WORD32 i, i4_min_cost = INT_MAX; |
| 1744 | |
| 1745 | left = (u4_n_avblty & LEFT_MB_AVAILABLE_MASK); |
| 1746 | top = (u4_n_avblty & TOP_MB_AVAILABLE_MASK) >> 2; |
| 1747 | |
| 1748 | /* Computing SAD */ |
| 1749 | |
| 1750 | /* VERT mode valid */ |
| 1751 | if (u4_valid_intra_modes & 1) |
| 1752 | { |
| 1753 | pu1_pred = pu1_ngbr_pels + 5; |
| 1754 | i4_sad[VERT_I4x4] = 0; |
| 1755 | i4_cost[VERT_I4x4] = 0; |
| 1756 | |
| 1757 | USADA8(pu1_src_temp, pu1_pred, i4_sad[VERT_I4x4]); |
| 1758 | pu1_src_temp += src_strd; |
| 1759 | USADA8(pu1_src_temp, pu1_pred, i4_sad[VERT_I4x4]); |
| 1760 | pu1_src_temp += src_strd; |
| 1761 | USADA8(pu1_src_temp, pu1_pred, i4_sad[VERT_I4x4]); |
| 1762 | pu1_src_temp += src_strd; |
| 1763 | USADA8(pu1_src_temp, pu1_pred, i4_sad[VERT_I4x4]); |
| 1764 | |
| 1765 | i4_cost[VERT_I4x4] = i4_sad[VERT_I4x4] + ((u4_predictd_mode == VERT_I4x4) ? |
| 1766 | u4_lambda : 4 * u4_lambda); |
| 1767 | } |
| 1768 | |
| 1769 | /* HORZ mode valid */ |
| 1770 | if (u4_valid_intra_modes & 2) |
| 1771 | { |
| 1772 | i4_sad[HORZ_I4x4] = 0; |
| 1773 | i4_cost[HORZ_I4x4] =0; |
| 1774 | pu1_src_temp = pu1_src; |
| 1775 | |
| 1776 | u1_pred_val = pu1_ngbr_pels[3]; |
| 1777 | |
| 1778 | i4_sad[HORZ_I4x4] += ABS(pu1_src_temp[0] - u1_pred_val) |
| 1779 | + ABS(pu1_src_temp[1] - u1_pred_val) |
| 1780 | + ABS(pu1_src_temp[2] - u1_pred_val) |
| 1781 | + ABS(pu1_src_temp[3] - u1_pred_val); |
| 1782 | pu1_src_temp += src_strd; |
| 1783 | |
| 1784 | u1_pred_val = pu1_ngbr_pels[2]; |
| 1785 | |
| 1786 | i4_sad[HORZ_I4x4] += ABS(pu1_src_temp[0] - u1_pred_val) |
| 1787 | + ABS(pu1_src_temp[1] - u1_pred_val) |
| 1788 | + ABS(pu1_src_temp[2] - u1_pred_val) |
| 1789 | + ABS(pu1_src_temp[3] - u1_pred_val); |
| 1790 | pu1_src_temp += src_strd; |
| 1791 | |
| 1792 | u1_pred_val = pu1_ngbr_pels[1]; |
| 1793 | |
| 1794 | i4_sad[HORZ_I4x4] += ABS(pu1_src_temp[0] - u1_pred_val) |
| 1795 | + ABS(pu1_src_temp[1] - u1_pred_val) |
| 1796 | + ABS(pu1_src_temp[2] - u1_pred_val) |
| 1797 | + ABS(pu1_src_temp[3] - u1_pred_val); |
| 1798 | pu1_src_temp += src_strd; |
| 1799 | |
| 1800 | u1_pred_val = pu1_ngbr_pels[0]; |
| 1801 | |
| 1802 | i4_sad[HORZ_I4x4] += ABS(pu1_src_temp[0] - u1_pred_val) |
| 1803 | + ABS(pu1_src_temp[1] - u1_pred_val) |
| 1804 | + ABS(pu1_src_temp[2] - u1_pred_val) |
| 1805 | + ABS(pu1_src_temp[3] - u1_pred_val); |
| 1806 | |
| 1807 | i4_cost[HORZ_I4x4] = i4_sad[HORZ_I4x4] + ((u4_predictd_mode == HORZ_I4x4) ? |
| 1808 | u4_lambda : 4 * u4_lambda); |
| 1809 | } |
| 1810 | |
| 1811 | /* DC mode valid */ |
| 1812 | if (u4_valid_intra_modes & 4) |
| 1813 | { |
| 1814 | i4_sad[DC_I4x4] = 0; |
| 1815 | i4_cost[DC_I4x4] = 0; |
| 1816 | pu1_src_temp = pu1_src; |
| 1817 | |
| 1818 | if (left) |
| 1819 | u4_dcval = pu1_ngbr_pels[0] + pu1_ngbr_pels[1] + pu1_ngbr_pels[2] |
| 1820 | + pu1_ngbr_pels[3] + 2; |
| 1821 | if (top) |
| 1822 | u4_dcval += pu1_ngbr_pels[5] + pu1_ngbr_pels[6] + pu1_ngbr_pels[7] |
| 1823 | + pu1_ngbr_pels[8] + 2; |
| 1824 | |
| 1825 | u4_dcval = (u4_dcval) ? (u4_dcval >> (1 + left + top)) : 128; |
| 1826 | |
| 1827 | /* none available */ |
| 1828 | memset(u1_pred_vals, u4_dcval, 4); |
| 1829 | USADA8(pu1_src_temp, u1_pred_vals, i4_sad[DC_I4x4]); |
| 1830 | pu1_src_temp += src_strd; |
| 1831 | USADA8(pu1_src_temp, u1_pred_vals, i4_sad[DC_I4x4]); |
| 1832 | pu1_src_temp += src_strd; |
| 1833 | USADA8(pu1_src_temp, u1_pred_vals, i4_sad[DC_I4x4]); |
| 1834 | pu1_src_temp += src_strd; |
| 1835 | USADA8(pu1_src_temp, u1_pred_vals, i4_sad[DC_I4x4]); |
| 1836 | pu1_src_temp += src_strd; |
| 1837 | |
| 1838 | i4_cost[DC_I4x4] = i4_sad[DC_I4x4] + ((u4_predictd_mode == DC_I4x4) ? |
| 1839 | u4_lambda : 4 * u4_lambda); |
| 1840 | } |
| 1841 | |
| 1842 | /* if modes other than VERT, HORZ and DC are valid */ |
| 1843 | if (u4_valid_intra_modes > 7) |
| 1844 | { |
| 1845 | pu1_pred = pu1_ngbr_pels; |
| 1846 | pu1_pred[13] = pu1_pred[14] = pu1_pred[12]; |
| 1847 | |
| 1848 | /* Performing FILT121 and FILT11 operation for all neighbour values*/ |
| 1849 | for (i = 0; i < 13; i++) |
| 1850 | { |
| 1851 | u1_pred_vals_diag_121[i] = FILT121(pu1_pred[0], pu1_pred[1], pu1_pred[2]); |
| 1852 | u1_pred_vals_diag_11[i] = FILT11(pu1_pred[0], pu1_pred[1]); |
| 1853 | |
| 1854 | pu1_pred++; |
| 1855 | } |
| 1856 | |
| 1857 | if (u4_valid_intra_modes & 8)/* DIAG_DL */ |
| 1858 | { |
| 1859 | i4_sad[DIAG_DL_I4x4] = 0; |
| 1860 | i4_cost[DIAG_DL_I4x4] = 0; |
| 1861 | pu1_src_temp = pu1_src; |
| 1862 | pu1_pred_val = u1_pred_vals_diag_121 + 5; |
| 1863 | |
| 1864 | USADA8(pu1_src_temp, pu1_pred_val, i4_sad[DIAG_DL_I4x4]); |
| 1865 | pu1_src_temp += src_strd; |
| 1866 | USADA8(pu1_src_temp, (pu1_pred_val + 1), i4_sad[DIAG_DL_I4x4]); |
| 1867 | pu1_src_temp += src_strd; |
| 1868 | USADA8(pu1_src_temp, (pu1_pred_val + 2), i4_sad[DIAG_DL_I4x4]); |
| 1869 | pu1_src_temp += src_strd; |
| 1870 | USADA8(pu1_src_temp, (pu1_pred_val + 3), i4_sad[DIAG_DL_I4x4]); |
| 1871 | pu1_src_temp += src_strd; |
| 1872 | i4_cost[DIAG_DL_I4x4] = i4_sad[DIAG_DL_I4x4] + ((u4_predictd_mode == DIAG_DL_I4x4) ? |
| 1873 | u4_lambda : 4 * u4_lambda); |
| 1874 | } |
| 1875 | |
| 1876 | if (u4_valid_intra_modes & 16)/* DIAG_DR */ |
| 1877 | { |
| 1878 | i4_sad[DIAG_DR_I4x4] = 0; |
| 1879 | i4_cost[DIAG_DR_I4x4] = 0; |
| 1880 | pu1_src_temp = pu1_src; |
| 1881 | pu1_pred_val = u1_pred_vals_diag_121 + 3; |
| 1882 | |
| 1883 | USADA8(pu1_src_temp, pu1_pred_val, i4_sad[DIAG_DR_I4x4]); |
| 1884 | pu1_src_temp += src_strd; |
| 1885 | USADA8(pu1_src_temp, (pu1_pred_val - 1), i4_sad[DIAG_DR_I4x4]); |
| 1886 | pu1_src_temp += src_strd; |
| 1887 | USADA8(pu1_src_temp, (pu1_pred_val - 2), i4_sad[DIAG_DR_I4x4]); |
| 1888 | pu1_src_temp += src_strd; |
| 1889 | USADA8(pu1_src_temp, (pu1_pred_val - 3), i4_sad[DIAG_DR_I4x4]); |
| 1890 | pu1_src_temp += src_strd; |
| 1891 | i4_cost[DIAG_DR_I4x4] = i4_sad[DIAG_DR_I4x4] + ((u4_predictd_mode == DIAG_DR_I4x4) ? |
| 1892 | u4_lambda : 4 * u4_lambda); |
| 1893 | |
| 1894 | } |
| 1895 | |
| 1896 | if (u4_valid_intra_modes & 32)/* VERT_R mode valid ????*/ |
| 1897 | { |
| 1898 | i4_sad[VERT_R_I4x4] = 0; |
| 1899 | |
| 1900 | pu1_src_temp = pu1_src; |
| 1901 | u1_pred_vals_vert_r[0] = u1_pred_vals_diag_121[2]; |
| 1902 | memcpy((u1_pred_vals_vert_r + 1), (u1_pred_vals_diag_11 + 4), 3); |
| 1903 | u1_pred_vals_vert_r[4] = u1_pred_vals_diag_121[1]; |
| 1904 | memcpy((u1_pred_vals_vert_r + 5), (u1_pred_vals_diag_121 + 3), 3); |
| 1905 | |
| 1906 | pu1_pred_val = u1_pred_vals_diag_11 + 4; |
| 1907 | USADA8(pu1_src_temp, pu1_pred_val, i4_sad[VERT_R_I4x4]); |
| 1908 | pu1_pred_val = u1_pred_vals_diag_121 + 3; |
| 1909 | pu1_src_temp += src_strd; |
| 1910 | USADA8(pu1_src_temp, pu1_pred_val, i4_sad[VERT_R_I4x4]); |
| 1911 | pu1_src_temp += src_strd; |
| 1912 | USADA8(pu1_src_temp, (u1_pred_vals_vert_r), i4_sad[VERT_R_I4x4]); |
| 1913 | pu1_src_temp += src_strd; |
| 1914 | USADA8(pu1_src_temp, (u1_pred_vals_vert_r + 4), |
| 1915 | i4_sad[VERT_R_I4x4]); |
| 1916 | |
| 1917 | i4_cost[VERT_R_I4x4] = i4_sad[VERT_R_I4x4] + ((u4_predictd_mode == VERT_R_I4x4) ? |
| 1918 | u4_lambda : 4 * u4_lambda); |
| 1919 | } |
| 1920 | |
| 1921 | if (u4_valid_intra_modes & 64)/* HORZ_D mode valid ????*/ |
| 1922 | { |
| 1923 | i4_sad[HORZ_D_I4x4] = 0; |
| 1924 | |
| 1925 | pu1_src_temp = pu1_src; |
| 1926 | u1_pred_vals_horz_d[6] = u1_pred_vals_diag_11[3]; |
| 1927 | memcpy((u1_pred_vals_horz_d + 7), (u1_pred_vals_diag_121 + 3), 3); |
| 1928 | u1_pred_vals_horz_d[0] = u1_pred_vals_diag_11[0]; |
| 1929 | u1_pred_vals_horz_d[1] = u1_pred_vals_diag_121[0]; |
| 1930 | u1_pred_vals_horz_d[2] = u1_pred_vals_diag_11[1]; |
| 1931 | u1_pred_vals_horz_d[3] = u1_pred_vals_diag_121[1]; |
| 1932 | u1_pred_vals_horz_d[4] = u1_pred_vals_diag_11[2]; |
| 1933 | u1_pred_vals_horz_d[5] = u1_pred_vals_diag_121[2]; |
| 1934 | |
| 1935 | pu1_pred_val = u1_pred_vals_horz_d; |
| 1936 | USADA8(pu1_src_temp, (pu1_pred_val + 6), i4_sad[HORZ_D_I4x4]); |
| 1937 | pu1_src_temp += src_strd; |
| 1938 | USADA8(pu1_src_temp, (pu1_pred_val + 4), i4_sad[HORZ_D_I4x4]); |
| 1939 | pu1_src_temp += src_strd; |
| 1940 | USADA8(pu1_src_temp, (pu1_pred_val + 2), i4_sad[HORZ_D_I4x4]); |
| 1941 | pu1_src_temp += src_strd; |
| 1942 | USADA8(pu1_src_temp, (pu1_pred_val), i4_sad[HORZ_D_I4x4]); |
| 1943 | |
| 1944 | i4_cost[HORZ_D_I4x4] = i4_sad[HORZ_D_I4x4] + ((u4_predictd_mode == HORZ_D_I4x4) ? |
| 1945 | u4_lambda : 4 * u4_lambda); |
| 1946 | } |
| 1947 | |
| 1948 | if (u4_valid_intra_modes & 128)/* VERT_L mode valid ????*/ |
| 1949 | { |
| 1950 | i4_sad[VERT_L_I4x4] = 0; |
| 1951 | pu1_src_temp = pu1_src; |
| 1952 | pu1_pred_val = u1_pred_vals_diag_11 + 5; |
| 1953 | USADA8(pu1_src_temp, (pu1_pred_val), i4_sad[VERT_L_I4x4]); |
| 1954 | pu1_src_temp += src_strd; |
| 1955 | pu1_pred_val = u1_pred_vals_diag_121 + 5; |
| 1956 | USADA8(pu1_src_temp, (pu1_pred_val), i4_sad[VERT_L_I4x4]); |
| 1957 | pu1_src_temp += src_strd; |
| 1958 | pu1_pred_val = u1_pred_vals_diag_11 + 6; |
| 1959 | USADA8(pu1_src_temp, (pu1_pred_val), i4_sad[VERT_L_I4x4]); |
| 1960 | pu1_src_temp += src_strd; |
| 1961 | pu1_pred_val = u1_pred_vals_diag_121 + 6; |
| 1962 | USADA8(pu1_src_temp, (pu1_pred_val), i4_sad[VERT_L_I4x4]); |
| 1963 | |
| 1964 | i4_cost[VERT_L_I4x4] = i4_sad[VERT_L_I4x4] + ((u4_predictd_mode == VERT_L_I4x4) ? |
| 1965 | u4_lambda : 4 * u4_lambda); |
| 1966 | } |
| 1967 | |
| 1968 | if (u4_valid_intra_modes & 256)/* HORZ_U mode valid ????*/ |
| 1969 | { |
| 1970 | i4_sad[HORZ_U_I4x4] = 0; |
| 1971 | pu1_src_temp = pu1_src; |
| 1972 | u1_pred_vals_horz_u[0] = u1_pred_vals_diag_11[2]; |
| 1973 | u1_pred_vals_horz_u[1] = u1_pred_vals_diag_121[1]; |
| 1974 | u1_pred_vals_horz_u[2] = u1_pred_vals_diag_11[1]; |
| 1975 | u1_pred_vals_horz_u[3] = u1_pred_vals_diag_121[0]; |
| 1976 | u1_pred_vals_horz_u[4] = u1_pred_vals_diag_11[0]; |
| 1977 | u1_pred_vals_horz_u[5] = FILT121(pu1_ngbr_pels[0], pu1_ngbr_pels[0], pu1_ngbr_pels[1]); |
| 1978 | |
| 1979 | memset((u1_pred_vals_horz_u + 6), pu1_ngbr_pels[0], 4); |
| 1980 | |
| 1981 | pu1_pred_val = u1_pred_vals_horz_u; |
| 1982 | USADA8(pu1_src_temp, (pu1_pred_val), i4_sad[HORZ_U_I4x4]); |
| 1983 | pu1_src_temp += src_strd; |
| 1984 | USADA8(pu1_src_temp, (pu1_pred_val + 2), i4_sad[HORZ_U_I4x4]); |
| 1985 | pu1_src_temp += src_strd; |
| 1986 | USADA8(pu1_src_temp, (pu1_pred_val + 4), i4_sad[HORZ_U_I4x4]); |
| 1987 | pu1_src_temp += src_strd; |
| 1988 | USADA8(pu1_src_temp, (pu1_pred_val + 6), i4_sad[HORZ_U_I4x4]); |
| 1989 | |
| 1990 | i4_cost[HORZ_U_I4x4] = i4_sad[HORZ_U_I4x4] + ((u4_predictd_mode == HORZ_U_I4x4) ? |
| 1991 | u4_lambda : 4 * u4_lambda); |
| 1992 | } |
| 1993 | |
| 1994 | i4_min_cost = MIN3(MIN3(i4_cost[0], i4_cost[1], i4_cost[2]), |
| 1995 | MIN3(i4_cost[3], i4_cost[4], i4_cost[5]), |
| 1996 | MIN3(i4_cost[6], i4_cost[7], i4_cost[8])); |
| 1997 | |
| 1998 | } |
| 1999 | else |
| 2000 | { |
| 2001 | /* Only first three modes valid */ |
| 2002 | i4_min_cost = MIN3(i4_cost[0], i4_cost[1], i4_cost[2]); |
| 2003 | } |
| 2004 | |
| 2005 | *pu4_sadmin = i4_min_cost; |
| 2006 | |
| 2007 | if (i4_min_cost == i4_cost[0]) |
| 2008 | { |
| 2009 | *u4_intra_mode = VERT_I4x4; |
| 2010 | pu1_pred_val = pu1_ngbr_pels + 5; |
| 2011 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2012 | pu1_dst += dst_strd; |
| 2013 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2014 | pu1_dst += dst_strd; |
| 2015 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2016 | pu1_dst += dst_strd; |
| 2017 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2018 | } |
| 2019 | else if (i4_min_cost == i4_cost[1]) |
| 2020 | { |
| 2021 | *u4_intra_mode = HORZ_I4x4; |
| 2022 | memset(pu1_dst, pu1_ngbr_pels[3], 4); |
| 2023 | pu1_dst += dst_strd; |
| 2024 | memset(pu1_dst, pu1_ngbr_pels[2], 4); |
| 2025 | pu1_dst += dst_strd; |
| 2026 | memset(pu1_dst, pu1_ngbr_pels[1], 4); |
| 2027 | pu1_dst += dst_strd; |
| 2028 | memset(pu1_dst, pu1_ngbr_pels[0], 4); |
| 2029 | } |
| 2030 | else if (i4_min_cost == i4_cost[2]) |
| 2031 | { |
| 2032 | *u4_intra_mode = DC_I4x4; |
| 2033 | memset(pu1_dst, u4_dcval, 4); |
| 2034 | pu1_dst += dst_strd; |
| 2035 | memset(pu1_dst, u4_dcval, 4); |
| 2036 | pu1_dst += dst_strd; |
| 2037 | memset(pu1_dst, u4_dcval, 4); |
| 2038 | pu1_dst += dst_strd; |
| 2039 | memset(pu1_dst, u4_dcval, 4); |
| 2040 | } |
| 2041 | |
| 2042 | else if (i4_min_cost == i4_cost[3]) |
| 2043 | { |
| 2044 | *u4_intra_mode = DIAG_DL_I4x4; |
| 2045 | pu1_pred_val = u1_pred_vals_diag_121 + 5; |
| 2046 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2047 | pu1_dst += dst_strd; |
| 2048 | memcpy(pu1_dst, (pu1_pred_val + 1), 4); |
| 2049 | pu1_dst += dst_strd; |
| 2050 | memcpy(pu1_dst, (pu1_pred_val + 2), 4); |
| 2051 | pu1_dst += dst_strd; |
| 2052 | memcpy(pu1_dst, (pu1_pred_val + 3), 4); |
| 2053 | } |
| 2054 | else if (i4_min_cost == i4_cost[4]) |
| 2055 | { |
| 2056 | *u4_intra_mode = DIAG_DR_I4x4; |
| 2057 | pu1_pred_val = u1_pred_vals_diag_121 + 3; |
| 2058 | |
| 2059 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2060 | pu1_dst += dst_strd; |
| 2061 | memcpy(pu1_dst, (pu1_pred_val - 1), 4); |
| 2062 | pu1_dst += dst_strd; |
| 2063 | memcpy(pu1_dst, (pu1_pred_val - 2), 4); |
| 2064 | pu1_dst += dst_strd; |
| 2065 | memcpy(pu1_dst, (pu1_pred_val - 3), 4); |
| 2066 | } |
| 2067 | |
| 2068 | else if (i4_min_cost == i4_cost[5]) |
| 2069 | { |
| 2070 | *u4_intra_mode = VERT_R_I4x4; |
| 2071 | pu1_pred_val = u1_pred_vals_diag_11 + 4; |
| 2072 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2073 | pu1_dst += dst_strd; |
| 2074 | pu1_pred_val = u1_pred_vals_diag_121 + 3; |
| 2075 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2076 | pu1_dst += dst_strd; |
| 2077 | memcpy(pu1_dst, (u1_pred_vals_vert_r), 4); |
| 2078 | pu1_dst += dst_strd; |
| 2079 | memcpy(pu1_dst, (u1_pred_vals_vert_r + 4), 4); |
| 2080 | } |
| 2081 | else if (i4_min_cost == i4_cost[6]) |
| 2082 | { |
| 2083 | *u4_intra_mode = HORZ_D_I4x4; |
| 2084 | pu1_pred_val = u1_pred_vals_horz_d; |
| 2085 | memcpy(pu1_dst, (pu1_pred_val + 6), 4); |
| 2086 | pu1_dst += dst_strd; |
| 2087 | memcpy(pu1_dst, (pu1_pred_val + 4), 4); |
| 2088 | pu1_dst += dst_strd; |
| 2089 | memcpy(pu1_dst, (pu1_pred_val + 2), 4); |
| 2090 | pu1_dst += dst_strd; |
| 2091 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2092 | pu1_dst += dst_strd; |
| 2093 | } |
| 2094 | else if (i4_min_cost == i4_cost[7]) |
| 2095 | { |
| 2096 | *u4_intra_mode = VERT_L_I4x4; |
| 2097 | pu1_pred_val = u1_pred_vals_diag_11 + 5; |
| 2098 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2099 | pu1_dst += dst_strd; |
| 2100 | pu1_pred_val = u1_pred_vals_diag_121 + 5; |
| 2101 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2102 | pu1_dst += dst_strd; |
| 2103 | pu1_pred_val = u1_pred_vals_diag_11 + 6; |
| 2104 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2105 | pu1_dst += dst_strd; |
| 2106 | pu1_pred_val = u1_pred_vals_diag_121 + 6; |
| 2107 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2108 | } |
| 2109 | else if (i4_min_cost == i4_cost[8]) |
| 2110 | { |
| 2111 | *u4_intra_mode = HORZ_U_I4x4; |
| 2112 | pu1_pred_val = u1_pred_vals_horz_u; |
| 2113 | memcpy(pu1_dst, (pu1_pred_val), 4); |
| 2114 | pu1_dst += dst_strd; |
| 2115 | memcpy(pu1_dst, (pu1_pred_val + 2), 4); |
| 2116 | pu1_dst += dst_strd; |
| 2117 | memcpy(pu1_dst, (pu1_pred_val + 4), 4); |
| 2118 | pu1_dst += dst_strd; |
| 2119 | memcpy(pu1_dst, (pu1_pred_val + 6), 4); |
| 2120 | pu1_dst += dst_strd; |
| 2121 | } |
| 2122 | |
| 2123 | return; |
| 2124 | } |
| 2125 | |
| 2126 | /** |
| 2127 | ****************************************************************************** |
| 2128 | * |
| 2129 | * @brief: |
| 2130 | * Evaluate best intr chroma mode (among VERT, HORZ and DC ) and do the prediction. |
| 2131 | * |
| 2132 | * @par Description |
| 2133 | * This function evaluates first three intra chroma modes and compute corresponding sad |
| 2134 | * and return the buffer predicted with best mode. |
| 2135 | * |
| 2136 | * @param[in] pu1_src |
| 2137 | * UWORD8 pointer to the source |
| 2138 | * |
| 2139 | * @param[in] pu1_ngbr_pels |
| 2140 | * UWORD8 pointer to neighbouring pels |
| 2141 | * |
| 2142 | * @param[out] pu1_dst |
| 2143 | * UWORD8 pointer to the destination |
| 2144 | * |
| 2145 | * @param[in] src_strd |
| 2146 | * integer source stride |
| 2147 | * |
| 2148 | * @param[in] dst_strd |
| 2149 | * integer destination stride |
| 2150 | * |
| 2151 | * @param[in] u4_n_avblty |
| 2152 | * availability of neighbouring pixels |
| 2153 | * |
| 2154 | * @param[in] u4_intra_mode |
| 2155 | * Pointer to the variable in which best mode is returned |
| 2156 | * |
| 2157 | * @param[in] pu4_sadmin |
| 2158 | * Pointer to the variable in which minimum sad is returned |
| 2159 | * |
| 2160 | * @param[in] u4_valid_intra_modes |
| 2161 | * Says what all modes are valid |
| 2162 | * |
| 2163 | * @return none |
| 2164 | * |
| 2165 | ****************************************************************************** |
| 2166 | */ |
| 2167 | void ih264e_evaluate_intra_chroma_modes(UWORD8 *pu1_src, |
| 2168 | UWORD8 *pu1_ngbr_pels, |
| 2169 | UWORD8 *pu1_dst, |
| 2170 | UWORD32 src_strd, |
| 2171 | UWORD32 dst_strd, |
| 2172 | WORD32 u4_n_avblty, |
| 2173 | UWORD32 *u4_intra_mode, |
| 2174 | WORD32 *pu4_sadmin, |
| 2175 | UWORD32 u4_valid_intra_modes) |
| 2176 | { |
| 2177 | UWORD8 *pu1_neighbour; |
| 2178 | UWORD8 *pu1_src_temp = pu1_src; |
| 2179 | UWORD8 left = 0, top = 0; |
| 2180 | WORD32 u4_dcval_u_l[2] = { 0, 0 }, /*sum left neighbours for 'U' ,two separate sets - sum of first four from top,and sum of four values from bottom */ |
| 2181 | u4_dcval_u_t[2] = { 0, 0 }; /*sum top neighbours for 'U'*/ |
| 2182 | |
| 2183 | WORD32 u4_dcval_v_l[2] = { 0, 0 }, /*sum left neighbours for 'V'*/ |
| 2184 | u4_dcval_v_t[2] = { 0, 0 }; /*sum top neighbours for 'V'*/ |
| 2185 | |
| 2186 | WORD32 i, j, row, col, i4_sad_vert = INT_MAX, i4_sad_horz = INT_MAX, |
| 2187 | i4_sad_dc = INT_MAX, i4_min_sad = INT_MAX; |
| 2188 | UWORD8 val_u, val_v; |
| 2189 | |
| 2190 | WORD32 u4_dc_val[2][2][2];/* ----------- |
| 2191 | | | | Chroma can have four |
| 2192 | | 00 | 01 | separate dc value... |
| 2193 | ----------- u4_dc_val corresponds to this dc values |
| 2194 | | | | with u4_dc_val[2][2][U] and u4_dc_val[2][2][V] |
| 2195 | | 10 | 11 | |
| 2196 | ----------- */ |
| 2197 | left = (u4_n_avblty & LEFT_MB_AVAILABLE_MASK); |
| 2198 | top = (u4_n_avblty & TOP_MB_AVAILABLE_MASK) >> 2; |
| 2199 | |
| 2200 | /*Evaluating HORZ*/ |
| 2201 | if (left)/* Ifleft available*/ |
| 2202 | { |
| 2203 | i4_sad_horz = 0; |
| 2204 | |
| 2205 | for (i = 0; i < 8; i++) |
| 2206 | { |
| 2207 | val_v = pu1_ngbr_pels[15 - 2 * i]; |
| 2208 | val_u = pu1_ngbr_pels[15 - 2 * i - 1]; |
| 2209 | row = i / 4; |
| 2210 | u4_dcval_u_l[row] += val_u; |
| 2211 | u4_dcval_v_l[row] += val_v; |
| 2212 | for (j = 0; j < 8; j++) |
| 2213 | { |
| 2214 | i4_sad_horz += ABS(val_u - pu1_src_temp[2 * j]);/* Finding SAD for HORZ mode*/ |
| 2215 | i4_sad_horz += ABS(val_v - pu1_src_temp[2 * j + 1]); |
| 2216 | } |
| 2217 | |
| 2218 | pu1_src_temp += src_strd; |
| 2219 | } |
| 2220 | u4_dcval_u_l[0] += 2; |
| 2221 | u4_dcval_u_l[1] += 2; |
| 2222 | u4_dcval_v_l[0] += 2; |
| 2223 | u4_dcval_v_l[1] += 2; |
| 2224 | } |
| 2225 | |
| 2226 | /*Evaluating VERT**/ |
| 2227 | pu1_src_temp = pu1_src; |
| 2228 | if (top) /* top available*/ |
| 2229 | { |
| 2230 | i4_sad_vert = 0; |
| 2231 | |
| 2232 | for (i = 0; i < 8; i++) |
| 2233 | { |
| 2234 | col = i / 4; |
| 2235 | |
| 2236 | val_u = pu1_ngbr_pels[18 + i * 2]; |
| 2237 | val_v = pu1_ngbr_pels[18 + i * 2 + 1]; |
| 2238 | u4_dcval_u_t[col] += val_u; |
| 2239 | u4_dcval_v_t[col] += val_v; |
| 2240 | |
| 2241 | for (j = 0; j < 16; j++) |
| 2242 | { |
| 2243 | i4_sad_vert += ABS(pu1_ngbr_pels[18 + j] - pu1_src_temp[j]);/* Finding SAD for VERT mode*/ |
| 2244 | } |
| 2245 | pu1_src_temp += src_strd; |
| 2246 | |
| 2247 | } |
| 2248 | u4_dcval_u_t[0] += 2; |
| 2249 | u4_dcval_u_t[1] += 2; |
| 2250 | u4_dcval_v_t[0] += 2; |
| 2251 | u4_dcval_v_t[1] += 2; |
| 2252 | } |
| 2253 | |
| 2254 | /* computing DC value*/ |
| 2255 | /* Equation 8-128 in spec*/ |
| 2256 | u4_dc_val[0][0][0] = (u4_dcval_u_l[0] + u4_dcval_u_t[0]) >> (1 + left + top); |
| 2257 | u4_dc_val[0][0][1] = (u4_dcval_v_l[0] + u4_dcval_v_t[0]) >> (1 + left + top); |
| 2258 | u4_dc_val[1][1][0] = (u4_dcval_u_l[1] + u4_dcval_u_t[1]) >> (1 + left + top); |
| 2259 | u4_dc_val[1][1][1] = (u4_dcval_v_l[1] + u4_dcval_v_t[1]) >> (1 + left + top); |
| 2260 | |
| 2261 | if (top) |
| 2262 | { |
| 2263 | /* Equation 8-132 in spec*/ |
| 2264 | u4_dc_val[0][1][0] = (u4_dcval_u_t[1]) >> (1 + top); |
| 2265 | u4_dc_val[0][1][1] = (u4_dcval_v_t[1]) >> (1 + top); |
| 2266 | } |
| 2267 | else |
| 2268 | { |
| 2269 | u4_dc_val[0][1][0] = (u4_dcval_u_l[0]) >> (1 + left); |
| 2270 | u4_dc_val[0][1][1] = (u4_dcval_v_l[0]) >> (1 + left); |
| 2271 | } |
| 2272 | |
| 2273 | if (left) |
| 2274 | { |
| 2275 | u4_dc_val[1][0][0] = (u4_dcval_u_l[1]) >> (1 + left); |
| 2276 | u4_dc_val[1][0][1] = (u4_dcval_v_l[1]) >> (1 + left); |
| 2277 | } |
| 2278 | else |
| 2279 | { |
| 2280 | u4_dc_val[1][0][0] = (u4_dcval_u_t[0]) >> (1 + top); |
| 2281 | u4_dc_val[1][0][1] = (u4_dcval_v_t[0]) >> (1 + top); |
| 2282 | } |
| 2283 | |
| 2284 | if (!(left || top)) |
| 2285 | { |
| 2286 | /*none available*/ |
| 2287 | u4_dc_val[0][0][0] = u4_dc_val[0][0][1] = |
| 2288 | u4_dc_val[0][1][0] = u4_dc_val[0][1][1] = |
| 2289 | u4_dc_val[1][0][0] = u4_dc_val[1][0][1] = |
| 2290 | u4_dc_val[1][1][0] = u4_dc_val[1][1][1] = 128; |
| 2291 | } |
| 2292 | |
| 2293 | /* Evaluating DC */ |
| 2294 | pu1_src_temp = pu1_src; |
| 2295 | i4_sad_dc = 0; |
| 2296 | for (i = 0; i < 8; i++) |
| 2297 | { |
| 2298 | for (j = 0; j < 8; j++) |
| 2299 | { |
| 2300 | col = j / 4; |
| 2301 | row = i / 4; |
| 2302 | val_u = u4_dc_val[row][col][0]; |
| 2303 | val_v = u4_dc_val[row][col][1]; |
| 2304 | |
| 2305 | i4_sad_dc += ABS(val_u - pu1_src_temp[2 * j]);/* Finding SAD for DC mode*/ |
| 2306 | i4_sad_dc += ABS(val_v - pu1_src_temp[2 * j + 1]); |
| 2307 | } |
| 2308 | pu1_src_temp += src_strd; |
| 2309 | } |
| 2310 | |
| 2311 | if ((u4_valid_intra_modes & 01) == 0)/* If DC is disabled*/ |
| 2312 | i4_sad_dc = INT_MAX; |
| 2313 | if ((u4_valid_intra_modes & 02) == 0)/* If HORZ is disabled*/ |
| 2314 | i4_sad_horz = INT_MAX; |
| 2315 | if ((u4_valid_intra_modes & 04) == 0)/* If VERT is disabled*/ |
| 2316 | i4_sad_vert = INT_MAX; |
| 2317 | |
| 2318 | i4_min_sad = MIN3(i4_sad_horz, i4_sad_dc, i4_sad_vert); |
| 2319 | |
| 2320 | /* Finding Minimum sad and doing corresponding prediction*/ |
| 2321 | if (i4_min_sad < *pu4_sadmin) |
| 2322 | { |
| 2323 | *pu4_sadmin = i4_min_sad; |
| 2324 | |
| 2325 | if (i4_min_sad == i4_sad_dc) |
| 2326 | { |
| 2327 | *u4_intra_mode = DC_CH_I8x8; |
| 2328 | for (i = 0; i < 8; i++) |
| 2329 | { |
| 2330 | for (j = 0; j < 8; j++) |
| 2331 | { |
| 2332 | col = j / 4; |
| 2333 | row = i / 4; |
| 2334 | |
| 2335 | pu1_dst[2 * j] = u4_dc_val[row][col][0]; |
| 2336 | pu1_dst[2 * j + 1] = u4_dc_val[row][col][1]; |
| 2337 | } |
| 2338 | pu1_dst += dst_strd; |
| 2339 | } |
| 2340 | } |
| 2341 | else if (i4_min_sad == i4_sad_horz) |
| 2342 | { |
| 2343 | *u4_intra_mode = HORZ_CH_I8x8; |
| 2344 | for (j = 0; j < 8; j++) |
| 2345 | { |
| 2346 | val_v = pu1_ngbr_pels[15 - 2 * j]; |
| 2347 | val_u = pu1_ngbr_pels[15 - 2 * j - 1]; |
| 2348 | |
| 2349 | for (i = 0; i < 8; i++) |
| 2350 | { |
| 2351 | pu1_dst[2 * i] = val_u; |
| 2352 | pu1_dst[2 * i + 1] = val_v; |
| 2353 | |
| 2354 | } |
| 2355 | pu1_dst += dst_strd; |
| 2356 | } |
| 2357 | } |
| 2358 | else |
| 2359 | { |
| 2360 | *u4_intra_mode = VERT_CH_I8x8; |
| 2361 | pu1_neighbour = pu1_ngbr_pels + 18; |
| 2362 | for (j = 0; j < 8; j++) |
| 2363 | { |
| 2364 | memcpy(pu1_dst, pu1_neighbour, MB_SIZE); |
| 2365 | pu1_dst += dst_strd; |
| 2366 | } |
| 2367 | } |
| 2368 | } |
| 2369 | |
| 2370 | return; |
| 2371 | } |