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_core_coding.c |
| 25 | * |
| 26 | * @brief |
| 27 | * This file contains routines that perform luma and chroma core coding for |
| 28 | * intra macroblocks |
| 29 | * |
| 30 | * @author |
| 31 | * ittiam |
| 32 | * |
| 33 | * @par List of Functions: |
| 34 | * - ih264e_pack_l_mb_i16() |
| 35 | * - ih264e_pack_c_mb_i8() |
| 36 | * - ih264e_code_luma_intra_macroblock_16x16() |
| 37 | * - ih264e_code_luma_intra_macroblock_4x4() |
| 38 | * - ih264e_code_chroma_intra_macroblock_8x8() |
| 39 | * |
| 40 | * @remarks |
| 41 | * None |
| 42 | * |
| 43 | ******************************************************************************* |
| 44 | */ |
| 45 | |
| 46 | /*****************************************************************************/ |
| 47 | /* File Includes */ |
| 48 | /*****************************************************************************/ |
| 49 | |
| 50 | /* System include files */ |
| 51 | #include <stdio.h> |
| 52 | #include <string.h> |
| 53 | #include <assert.h> |
| 54 | |
| 55 | /* User include files */ |
| 56 | #include "ih264e_config.h" |
| 57 | #include "ih264_typedefs.h" |
| 58 | #include "ih264_platform_macros.h" |
| 59 | #include "iv2.h" |
| 60 | #include "ive2.h" |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 61 | #include "ih264_macros.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 62 | #include "ih264_defs.h" |
| 63 | #include "ih264e_defs.h" |
| 64 | #include "ih264_trans_data.h" |
| 65 | #include "ih264e_error.h" |
| 66 | #include "ih264e_bitstream.h" |
| 67 | #include "ime_distortion_metrics.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 68 | #include "ime_defs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 69 | #include "ime_structs.h" |
| 70 | #include "ih264_structs.h" |
| 71 | #include "ih264_trans_quant_itrans_iquant.h" |
| 72 | #include "ih264_inter_pred_filters.h" |
| 73 | #include "ih264_mem_fns.h" |
| 74 | #include "ih264_padding.h" |
| 75 | #include "ih264_intra_pred_filters.h" |
| 76 | #include "ih264_deblk_edge_filters.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 77 | #include "ih264_cabac_tables.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 78 | #include "irc_cntrl_param.h" |
| 79 | #include "irc_frame_info_collector.h" |
| 80 | #include "ih264e_rate_control.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 81 | #include "ih264e_cabac_structs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 82 | #include "ih264e_structs.h" |
| 83 | #include "ih264e_globals.h" |
| 84 | #include "ih264e_core_coding.h" |
| 85 | #include "ih264e_mc.h" |
| 86 | |
| 87 | |
| 88 | /*****************************************************************************/ |
| 89 | /* Function Definitions */ |
| 90 | /*****************************************************************************/ |
| 91 | |
| 92 | /** |
| 93 | ******************************************************************************* |
| 94 | * |
| 95 | * @brief |
| 96 | * This function performs does the DCT transform then Hadamard transform |
| 97 | * and quantization for a macroblock when the mb mode is intra 16x16 mode |
| 98 | * |
| 99 | * @par Description: |
| 100 | * First cf4 is done on all 16 4x4 blocks of the 16x16 input block. |
| 101 | * Then hadamard transform is done on the DC coefficients |
| 102 | * Quantization is then performed on the 16x16 block, 4x4 wise |
| 103 | * |
| 104 | * @param[in] pu1_src |
| 105 | * Pointer to source sub-block |
| 106 | * |
| 107 | * @param[in] pu1_pred |
| 108 | * Pointer to prediction sub-block |
| 109 | * |
| 110 | * @param[in] pi2_out |
| 111 | * Pointer to residual sub-block |
| 112 | * The output will be in linear format |
| 113 | * The first 16 continuous locations will contain the values of Dc block |
| 114 | * After DC block and a stride 1st AC block will follow |
| 115 | * After one more stride next AC block will follow |
| 116 | * The blocks will be in raster scan order |
| 117 | * |
| 118 | * @param[in] src_strd |
| 119 | * Source stride |
| 120 | * |
| 121 | * @param[in] pred_strd |
| 122 | * Prediction stride |
| 123 | * |
| 124 | * @param[in] dst_strd |
| 125 | * Destination stride |
| 126 | * |
| 127 | * @param[in] pu2_scale_matrix |
| 128 | * The quantization matrix for 4x4 transform |
| 129 | * |
| 130 | * @param[in] pu2_threshold_matrix |
| 131 | * Threshold matrix |
| 132 | * |
| 133 | * @param[in] u4_qbits |
| 134 | * 15+QP/6 |
| 135 | * |
| 136 | * @param[in] u4_round_factor |
| 137 | * Round factor for quant |
| 138 | * |
| 139 | * @param[out] pu1_nnz |
| 140 | * Memory to store the non-zeros after transform |
| 141 | * The first byte will be the nnz of DC block |
| 142 | * From the next byte the AC nnzs will be stored in raster scan order |
| 143 | * |
| 144 | * @param u4_dc_flag |
| 145 | * Signals if Dc transform is to be done or not |
| 146 | * 1 -> Dc transform will be done |
| 147 | * 0 -> Dc transform will not be done |
| 148 | * |
| 149 | * @remarks |
| 150 | * |
| 151 | ******************************************************************************* |
| 152 | */ |
| 153 | void ih264e_luma_16x16_resi_trans_dctrans_quant(codec_t *ps_codec, |
| 154 | UWORD8 *pu1_src, |
| 155 | UWORD8 *pu1_pred, |
| 156 | WORD16 *pi2_out, |
| 157 | WORD32 src_strd, |
| 158 | WORD32 pred_strd, |
| 159 | WORD32 dst_strd, |
| 160 | const UWORD16 *pu2_scale_matrix, |
| 161 | const UWORD16 *pu2_threshold_matrix, |
| 162 | UWORD32 u4_qbits, |
| 163 | UWORD32 u4_round_factor, |
| 164 | UWORD8 *pu1_nnz, |
| 165 | UWORD32 u4_dc_flag) |
| 166 | |
| 167 | { |
| 168 | WORD32 blk_cntr; |
| 169 | WORD32 i4_offsetx, i4_offsety; |
| 170 | UWORD8 *pu1_curr_src, *pu1_curr_pred; |
| 171 | |
| 172 | WORD16 *pi2_dc_str = pi2_out; |
| 173 | |
| 174 | /* Move to the ac addresses */ |
| 175 | pu1_nnz++; |
| 176 | pi2_out += dst_strd; |
| 177 | |
| 178 | for (blk_cntr = 0; blk_cntr < NUM_LUMA4x4_BLOCKS_IN_MB; blk_cntr++) |
| 179 | { |
| 180 | IND2SUB_LUMA_MB(blk_cntr, i4_offsetx, i4_offsety); |
| 181 | |
| 182 | pu1_curr_src = pu1_src + i4_offsetx + i4_offsety * src_strd; |
| 183 | pu1_curr_pred = pu1_pred + i4_offsetx + i4_offsety * pred_strd; |
| 184 | |
| 185 | ps_codec->pf_resi_trans_quant_4x4(pu1_curr_src, pu1_curr_pred, |
| 186 | pi2_out + blk_cntr * dst_strd, |
| 187 | src_strd, pred_strd, pu2_scale_matrix, |
| 188 | pu2_threshold_matrix, u4_qbits, |
| 189 | u4_round_factor, &pu1_nnz[blk_cntr], |
| 190 | &pi2_dc_str[blk_cntr]); |
| 191 | |
| 192 | } |
| 193 | |
| 194 | if (!u4_dc_flag) |
| 195 | return; |
| 196 | |
| 197 | /* |
| 198 | * In case of i16x16, we need to remove the contribution of dc coeffs into |
| 199 | * nnz of each block. We are doing that in the packing function |
| 200 | */ |
| 201 | |
| 202 | /* Adjust pointers to point to dc values */ |
| 203 | pi2_out -= dst_strd; |
| 204 | pu1_nnz--; |
| 205 | |
| 206 | u4_qbits++; |
| 207 | u4_round_factor <<= 1; |
| 208 | |
| 209 | ps_codec->pf_hadamard_quant_4x4(pi2_dc_str, pi2_out, pu2_scale_matrix, |
| 210 | pu2_threshold_matrix, u4_qbits, |
| 211 | u4_round_factor, &pu1_nnz[0]); |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | ******************************************************************************* |
| 216 | * |
| 217 | * @brief |
| 218 | * This function performs the intra 16x16 inverse transform process for H264 |
| 219 | * it includes inverse Dc transform, inverse quant and then inverse transform |
| 220 | * |
| 221 | * @par Description: |
| 222 | * |
| 223 | * @param[in] pi2_src |
| 224 | * Input data, 16x16 size |
| 225 | * First 16 mem locations will have the Dc coffs in rater scan order in linear fashion |
| 226 | * after a stride 1st AC clock will be present again in raster can order |
| 227 | * Then each AC block of the 16x16 block will follow in raster scan order |
| 228 | * |
| 229 | * @param[in] pu1_pred |
| 230 | * The predicted data, 16x16 size |
| 231 | * Block by block form |
| 232 | * |
| 233 | * @param[in] pu1_out |
| 234 | * Output 16x16 |
| 235 | * In block by block form |
| 236 | * |
| 237 | * @param[in] src_strd |
| 238 | * Source stride |
| 239 | * |
| 240 | * @param[in] pred_strd |
| 241 | * input stride for prediction buffer |
| 242 | * |
| 243 | * @param[in] out_strd |
| 244 | * input stride for output buffer |
| 245 | * |
| 246 | * @param[in] pu2_iscale_mat |
| 247 | * Inverse quantization matrix for 4x4 transform |
| 248 | * |
| 249 | * @param[in] pu2_weigh_mat |
| 250 | * weight matrix of 4x4 transform |
| 251 | * |
| 252 | * @param[in] qp_div |
| 253 | * QP/6 |
| 254 | * |
| 255 | * @param[in] pi4_tmp |
| 256 | * Input temporary buffer |
| 257 | * needs to be at least 20 in size |
| 258 | * |
| 259 | * @param[in] pu4_cntrl |
| 260 | * Controls the transform path |
| 261 | * total Last 17 bits are used |
| 262 | * the 16th th bit will correspond to DC block |
| 263 | * and 32-17 will correspond to the ac blocks in raster scan order |
| 264 | * bit equaling zero indicates that the entire 4x4 block is zero for DC |
| 265 | * For AC blocks a bit equaling zero will mean that all 15 AC coffs of the block is nonzero |
| 266 | * |
| 267 | * @param[in] pi4_tmp |
| 268 | * Input temporary buffer |
| 269 | * needs to be at least COFF_CNT_SUB_BLK_4x4+COFF_CNT_SUB_BLK_4x4 size |
| 270 | * |
| 271 | * @returns |
| 272 | * none |
| 273 | * |
| 274 | * @remarks |
| 275 | * The all zero case must be taken care outside |
| 276 | * |
| 277 | ******************************************************************************* |
| 278 | */ |
| 279 | void ih264e_luma_16x16_idctrans_iquant_itrans_recon(codec_t *ps_codec, |
| 280 | WORD16 *pi2_src, |
| 281 | UWORD8 *pu1_pred, |
| 282 | UWORD8 *pu1_out, |
| 283 | WORD32 src_strd, |
| 284 | WORD32 pred_strd, |
| 285 | WORD32 out_strd, |
| 286 | const UWORD16 *pu2_iscale_mat, |
| 287 | const UWORD16 *pu2_weigh_mat, |
| 288 | UWORD32 qp_div, |
| 289 | UWORD32 u4_cntrl, |
| 290 | UWORD32 u4_dc_trans_flag, |
| 291 | WORD32 *pi4_tmp) |
| 292 | { |
| 293 | /* Start index for inverse quant in a 4x4 block */ |
| 294 | WORD32 iq_start_idx = (u4_dc_trans_flag == 0) ? 0 : 1; |
| 295 | |
| 296 | /* Cntrl bits for 4x4 transforms |
| 297 | * u4_blk_cntrl : controls if a 4x4 block should be processed in ac path |
| 298 | * u4_dc_cntrl : controls is a 4x4 block is to be processed in dc path |
| 299 | * : dc block must contain only single dc coefficient |
| 300 | * u4_empty_blk_cntrl : control fot 4x4 block with no coeffs, ie no dc and ac |
| 301 | * : ie not (ac or dc) |
| 302 | */ |
| 303 | UWORD32 u4_blk_cntrl, u4_dc_cntrl, u4_empty_blk_cntrl; |
| 304 | |
| 305 | /* tmp registers for block ids */ |
| 306 | UWORD32 u4_blk_id; |
| 307 | |
| 308 | /* Subscrripts */ |
| 309 | WORD32 i4_offset_x, i4_offset_y; |
| 310 | |
| 311 | UWORD8 *pu1_cur_prd_blk, *pu1_cur_out_blk; |
| 312 | |
| 313 | /* Src and stride for dc coeffs */ |
| 314 | UWORD32 u4_dc_inc; |
| 315 | WORD16 *pi2_dc_src; |
| 316 | |
| 317 | /* |
| 318 | * For intra blocks we need to do inverse dc transform |
| 319 | * In case if intra blocks, its here that we populate the dc bits in cntrl |
| 320 | * as they cannot be populated any earlier |
| 321 | */ |
| 322 | if (u4_dc_trans_flag) |
| 323 | { |
| 324 | UWORD32 cntr, u4_dc_cntrl; |
| 325 | /* Do inv hadamard and place the results at the start of each AC block */ |
| 326 | ps_codec->pf_ihadamard_scaling_4x4(pi2_src, pi2_src, pu2_iscale_mat, |
| 327 | pu2_weigh_mat, qp_div, pi4_tmp); |
| 328 | |
| 329 | /* Update the cntrl flag */ |
| 330 | u4_dc_cntrl = 0; |
| 331 | for (cntr = 0; cntr < DC_COEFF_CNT_LUMA_MB; cntr++) |
| 332 | { |
| 333 | u4_dc_cntrl |= ((pi2_src[cntr] != 0) << (15 - cntr)); |
| 334 | } |
| 335 | /* Mark dc bits as 1 if corresponding ac bit is 0 */ |
| 336 | u4_dc_cntrl = (~(u4_cntrl >> 16) & u4_dc_cntrl); |
| 337 | /* Combine both ac and dc bits */ |
| 338 | u4_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_LUMA) |
| 339 | | (u4_dc_cntrl & CNTRL_FLAG_DC_MASK_LUMA); |
| 340 | } |
| 341 | |
| 342 | /* Source for dc coeffs |
| 343 | * If the block is intra, we have to read dc values from first row of src |
| 344 | * then stride for each block is 1, other wise its src stride |
| 345 | */ |
| 346 | pi2_dc_src = (iq_start_idx == 0) ? (pi2_src + src_strd) : pi2_src; |
| 347 | u4_dc_inc = (iq_start_idx == 0) ? src_strd : 1; |
| 348 | |
| 349 | /* The AC blocks starts from 2nd row */ |
| 350 | pi2_src += src_strd; |
| 351 | |
| 352 | /* Get the block bits */ |
| 353 | u4_blk_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_LUMA); |
| 354 | u4_dc_cntrl = (u4_cntrl & CNTRL_FLAG_DC_MASK_LUMA) << 16; |
| 355 | u4_empty_blk_cntrl = (~(u4_dc_cntrl | u4_blk_cntrl)) & 0xFFFF0000; |
| 356 | |
| 357 | /* Get first block to process */ |
| 358 | DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id); |
| 359 | while (u4_blk_id < NUM_LUMA4x4_BLOCKS_IN_MB) |
| 360 | { |
| 361 | /* Compute address of src blocks */ |
| 362 | WORD32 i4_src_offset = u4_dc_inc * u4_blk_id; |
| 363 | |
| 364 | IND2SUB_LUMA_MB(u4_blk_id, i4_offset_x, i4_offset_y); |
| 365 | |
| 366 | /* Compute address of out and pred blocks */ |
| 367 | pu1_cur_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd; |
| 368 | pu1_cur_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd; |
| 369 | |
| 370 | /* Do inv dc transform */ |
| 371 | ps_codec->pf_iquant_itrans_recon_4x4_dc(pi2_dc_src + i4_src_offset, |
| 372 | pu1_cur_prd_blk, |
| 373 | pu1_cur_out_blk, pred_strd, |
| 374 | out_strd, pu2_iscale_mat, |
| 375 | pu2_weigh_mat, qp_div, NULL, |
| 376 | iq_start_idx, |
| 377 | pi2_dc_src + i4_src_offset); |
| 378 | /* Get next DC block to process */ |
| 379 | DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id); |
| 380 | } |
| 381 | |
| 382 | /* now process ac/mixed blocks */ |
| 383 | DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id); |
| 384 | while (u4_blk_id < NUM_LUMA4x4_BLOCKS_IN_MB) |
| 385 | { |
| 386 | |
| 387 | WORD32 i4_src_offset = src_strd * u4_blk_id; |
| 388 | |
| 389 | IND2SUB_LUMA_MB(u4_blk_id, i4_offset_x, i4_offset_y); |
| 390 | |
| 391 | pu1_cur_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd; |
| 392 | pu1_cur_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd; |
| 393 | |
| 394 | ps_codec->pf_iquant_itrans_recon_4x4(pi2_src + i4_src_offset, |
| 395 | pu1_cur_prd_blk, pu1_cur_out_blk, |
| 396 | pred_strd, out_strd, |
| 397 | pu2_iscale_mat, pu2_weigh_mat, |
| 398 | qp_div, (WORD16*) pi4_tmp, |
| 399 | iq_start_idx, |
| 400 | pi2_dc_src + u4_blk_id); |
| 401 | |
| 402 | DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id); |
| 403 | } |
| 404 | |
| 405 | /* Now process empty blocks */ |
| 406 | DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id); |
| 407 | while (u4_blk_id < NUM_LUMA4x4_BLOCKS_IN_MB) |
| 408 | { |
| 409 | IND2SUB_LUMA_MB(u4_blk_id, i4_offset_x, i4_offset_y); |
| 410 | |
| 411 | pu1_cur_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd; |
| 412 | pu1_cur_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd; |
| 413 | |
| 414 | ps_codec->pf_inter_pred_luma_copy(pu1_cur_prd_blk, pu1_cur_out_blk, |
| 415 | pred_strd, out_strd, SIZE_4X4_BLK_HRZ, |
| 416 | SIZE_4X4_BLK_VERT, 0, 0); |
| 417 | |
| 418 | DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id); |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | ******************************************************************************* |
| 424 | * |
| 425 | * @brief |
| 426 | * This function performs does the DCT transform then Hadamard transform |
| 427 | * and quantization for a chroma macroblock |
| 428 | * |
| 429 | * @par Description: |
| 430 | * First cf4 is done on all 16 4x4 blocks of the 8x8input block |
| 431 | * Then hadamard transform is done on the DC coefficients |
| 432 | * Quantization is then performed on the 8x8 block, 4x4 wise |
| 433 | * |
| 434 | * @param[in] pu1_src |
| 435 | * Pointer to source sub-block |
| 436 | * The input is in interleaved format for two chroma planes |
| 437 | * |
| 438 | * @param[in] pu1_pred |
| 439 | * Pointer to prediction sub-block |
| 440 | * Prediction is in inter leaved format |
| 441 | * |
| 442 | * @param[in] pi2_out |
| 443 | * Pointer to residual sub-block |
| 444 | * The output will be in linear format |
| 445 | * The first 4 continuous locations will contain the values of DC block for U |
| 446 | * and then next 4 will contain for V. |
| 447 | * After DC block and a stride 1st AC block of U plane will follow |
| 448 | * After one more stride next AC block of V plane will follow |
| 449 | * The blocks will be in raster scan order |
| 450 | * |
| 451 | * After all the AC blocks of U plane AC blocks of V plane will follow in exact |
| 452 | * same way |
| 453 | * |
| 454 | * @param[in] src_strd |
| 455 | * Source stride |
| 456 | * |
| 457 | * @param[in] pred_strd |
| 458 | * Prediction stride |
| 459 | * |
| 460 | * @param[in] dst_strd |
| 461 | * Destination stride |
| 462 | * |
| 463 | * @param[in] pu2_scale_matrix |
| 464 | * The quantization matrix for 4x4 transform |
| 465 | * |
| 466 | * @param[in] pu2_threshold_matrix |
| 467 | * Threshold matrix |
| 468 | * |
| 469 | * @param[in] u4_qbits |
| 470 | * 15+QP/6 |
| 471 | * |
| 472 | * @param[in] u4_round_factor |
| 473 | * Round factor for quant |
| 474 | * |
| 475 | * @param[out] pu1_nnz |
| 476 | * Memory to store the non-zeros after transform |
| 477 | * The first byte will be the nnz od DC block for U plane |
| 478 | * From the next byte the AC nnzs will be storerd in raster scan order |
| 479 | * The fifth byte will be nnz of Dc block of V plane |
| 480 | * Then Ac blocks will follow |
| 481 | * |
| 482 | * @param u4_dc_flag |
| 483 | * Signals if Dc transform is to be done or not |
| 484 | * 1 -> Dc transform will be done |
| 485 | * 0 -> Dc transform will not be done |
| 486 | * |
| 487 | * @remarks |
| 488 | * |
| 489 | ******************************************************************************* |
| 490 | */ |
| 491 | void ih264e_chroma_8x8_resi_trans_dctrans_quant(codec_t *ps_codec, |
| 492 | UWORD8 *pu1_src, |
| 493 | UWORD8 *pu1_pred, |
| 494 | WORD16 *pi2_out, |
| 495 | WORD32 src_strd, |
| 496 | WORD32 pred_strd, |
| 497 | WORD32 out_strd, |
| 498 | const UWORD16 *pu2_scale_matrix, |
| 499 | const UWORD16 *pu2_threshold_matrix, |
| 500 | UWORD32 u4_qbits, |
| 501 | UWORD32 u4_round_factor, |
| 502 | UWORD8 *pu1_nnz_c) |
| 503 | { |
| 504 | WORD32 blk_cntr; |
| 505 | WORD32 i4_offsetx, i4_offsety; |
| 506 | UWORD8 *pu1_curr_src, *pu1_curr_pred; |
| 507 | |
| 508 | WORD16 pi2_dc_str[8]; |
| 509 | UWORD8 au1_dcnnz[2]; |
| 510 | |
| 511 | /* Move to the ac addresses */ |
| 512 | pu1_nnz_c++; |
| 513 | pi2_out += out_strd; |
| 514 | |
| 515 | for (blk_cntr = 0; blk_cntr < NUM_CHROMA4x4_BLOCKS_IN_MB; blk_cntr++) |
| 516 | { |
| 517 | IND2SUB_CHROMA_MB(blk_cntr, i4_offsetx, i4_offsety); |
| 518 | |
| 519 | pu1_curr_src = pu1_src + i4_offsetx + i4_offsety * src_strd; |
| 520 | pu1_curr_pred = pu1_pred + i4_offsetx + i4_offsety * pred_strd; |
| 521 | |
| 522 | /* For chroma, v plane nnz is populated from position 5 */ |
| 523 | ps_codec->pf_resi_trans_quant_chroma_4x4( |
| 524 | pu1_curr_src, pu1_curr_pred, |
| 525 | pi2_out + blk_cntr * out_strd, src_strd, pred_strd, |
| 526 | pu2_scale_matrix, pu2_threshold_matrix, u4_qbits, |
| 527 | u4_round_factor, &pu1_nnz_c[blk_cntr + (blk_cntr > 3)], |
| 528 | &pi2_dc_str[blk_cntr]); |
| 529 | } |
| 530 | |
| 531 | /* Adjust pointers to point to dc values */ |
| 532 | pi2_out -= out_strd; |
| 533 | pu1_nnz_c--; |
| 534 | |
| 535 | u4_qbits++; |
| 536 | u4_round_factor <<= 1; |
| 537 | |
| 538 | ps_codec->pf_hadamard_quant_2x2_uv(pi2_dc_str, pi2_out, pu2_scale_matrix, |
| 539 | pu2_threshold_matrix, u4_qbits, |
| 540 | u4_round_factor, au1_dcnnz); |
| 541 | |
| 542 | /* Copy the dc nnzs */ |
| 543 | pu1_nnz_c[0] = au1_dcnnz[0]; |
| 544 | pu1_nnz_c[5] = au1_dcnnz[1]; |
| 545 | |
| 546 | } |
| 547 | |
| 548 | /** |
| 549 | ******************************************************************************* |
| 550 | * @brief |
| 551 | * This function performs the inverse transform with process for chroma MB of H264 |
| 552 | * |
| 553 | * @par Description: |
| 554 | * Does inverse DC transform ,inverse quantization inverse transform |
| 555 | * |
| 556 | * @param[in] pi2_src |
| 557 | * Input data, 16x16 size |
| 558 | * The input is in the form of, first 4 locations will contain DC coeffs of |
| 559 | * U plane, next 4 will contain DC coeffs of V plane, then AC blocks of U plane |
| 560 | * in raster scan order will follow, each block as linear array in raster scan order. |
| 561 | * After a stride next AC block will follow. After all AC blocks of U plane |
| 562 | * V plane AC blocks will follow in exact same order. |
| 563 | * |
| 564 | * @param[in] pu1_pred |
| 565 | * The predicted data, 8x16 size, U and V interleaved |
| 566 | * |
| 567 | * @param[in] pu1_out |
| 568 | * Output 8x16, U and V interleaved |
| 569 | * |
| 570 | * @param[in] src_strd |
| 571 | * Source stride |
| 572 | * |
| 573 | * @param[in] pred_strd |
| 574 | * input stride for prediction buffer |
| 575 | * |
| 576 | * @param[in] out_strd |
| 577 | * input stride for output buffer |
| 578 | * |
| 579 | * @param[in] pu2_iscale_mat |
| 580 | * Inverse quantization martix for 4x4 transform |
| 581 | * |
| 582 | * @param[in] pu2_weigh_mat |
| 583 | * weight matrix of 4x4 transform |
| 584 | * |
| 585 | * @param[in] qp_div |
| 586 | * QP/6 |
| 587 | * |
| 588 | * @param[in] pi4_tmp |
| 589 | * Input temporary buffer |
| 590 | * needs to be at least COFF_CNT_SUB_BLK_4x4 + Number of Dc cofss for chroma * number of planes |
| 591 | * in size |
| 592 | * |
| 593 | * @param[in] pu4_cntrl |
| 594 | * Controls the transform path |
| 595 | * the 15 th bit will correspond to DC block of U plane , 14th will indicate the V plane Dc block |
| 596 | * 32-28 bits will indicate AC blocks of U plane in raster scan order |
| 597 | * 27-23 bits will indicate AC blocks of V plane in rater scan order |
| 598 | * The bit 1 implies that there is at least one non zero coeff in a block |
| 599 | * |
| 600 | * @returns |
| 601 | * none |
| 602 | * |
| 603 | * @remarks |
| 604 | ******************************************************************************* |
| 605 | */ |
| 606 | void ih264e_chroma_8x8_idctrans_iquant_itrans_recon(codec_t *ps_codec, |
| 607 | WORD16 *pi2_src, |
| 608 | UWORD8 *pu1_pred, |
| 609 | UWORD8 *pu1_out, |
| 610 | WORD32 src_strd, |
| 611 | WORD32 pred_strd, |
| 612 | WORD32 out_strd, |
| 613 | const UWORD16 *pu2_iscale_mat, |
| 614 | const UWORD16 *pu2_weigh_mat, |
| 615 | UWORD32 qp_div, |
| 616 | UWORD32 u4_cntrl, |
| 617 | WORD32 *pi4_tmp) |
| 618 | { |
| 619 | /* Cntrl bits for 4x4 transforms |
| 620 | * u4_blk_cntrl : controls if a 4x4 block should be processed in ac path |
| 621 | * u4_dc_cntrl : controls is a 4x4 block is to be processed in dc path |
| 622 | * : dc block must contain only single dc coefficient |
| 623 | * u4_empty_blk_cntrl : control fot 4x4 block with no coeffs, ie no dc and ac |
| 624 | * : ie not (ac or dc) |
| 625 | */ |
| 626 | |
| 627 | UWORD32 u4_blk_cntrl, u4_dc_cntrl, u4_empty_blk_cntrl; |
| 628 | |
| 629 | /* tmp registers for block ids */ |
| 630 | WORD32 u4_blk_id; |
| 631 | |
| 632 | /* Offsets for pointers */ |
| 633 | WORD32 i4_offset_x, i4_offset_y; |
| 634 | |
| 635 | /* Pointer to 4x4 blocks */ |
| 636 | UWORD8 *pu1_cur_4x4_prd_blk, *pu1_cur_4x4_out_blk; |
| 637 | |
| 638 | /* Tmp register for pointer to dc coffs */ |
| 639 | WORD16 *pi2_dc_src; |
| 640 | |
| 641 | WORD16 i2_zero = 0; |
| 642 | |
| 643 | /* Increment for dc block */ |
| 644 | WORD32 i4_dc_inc; |
| 645 | |
| 646 | /* |
| 647 | * Lets do the inverse transform for dc coeffs in chroma |
| 648 | */ |
| 649 | if (u4_cntrl & CNTRL_FLAG_DCBLK_MASK_CHROMA) |
| 650 | { |
| 651 | UWORD32 cntr, u4_dc_cntrl; |
| 652 | /* Do inv hadamard for u an v block */ |
| 653 | |
| 654 | ps_codec->pf_ihadamard_scaling_2x2_uv(pi2_src, pi2_src, pu2_iscale_mat, |
| 655 | pu2_weigh_mat, qp_div, NULL); |
| 656 | /* |
| 657 | * Update the cntrl flag |
| 658 | * Flag is updated as follows bits 15-11 -> u block dc bits |
| 659 | */ |
| 660 | u4_dc_cntrl = 0; |
| 661 | for (cntr = 0; cntr < 8; cntr++) |
| 662 | { |
| 663 | u4_dc_cntrl |= ((pi2_src[cntr] != 0) << (15 - cntr)); |
| 664 | } |
| 665 | |
| 666 | /* Mark dc bits as 1 if corresponding ac bit is 0 */ |
| 667 | u4_dc_cntrl = (~(u4_cntrl >> 16) & u4_dc_cntrl); |
| 668 | /* Combine both ac and dc bits */ |
| 669 | u4_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_CHROMA) |
| 670 | | (u4_dc_cntrl & CNTRL_FLAG_DC_MASK_CHROMA); |
| 671 | |
| 672 | /* Since we populated the dc coffs, we have to read them from there */ |
| 673 | pi2_dc_src = pi2_src; |
| 674 | i4_dc_inc = 1; |
| 675 | } |
| 676 | else |
| 677 | { |
| 678 | u4_cntrl = u4_cntrl & CNTRL_FLAG_AC_MASK_CHROMA; |
| 679 | pi2_dc_src = &i2_zero; |
| 680 | i4_dc_inc = 0; |
| 681 | } |
| 682 | |
| 683 | /* Get the block bits */ |
| 684 | u4_blk_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_CHROMA); |
| 685 | u4_dc_cntrl = (u4_cntrl & CNTRL_FLAG_DC_MASK_CHROMA) << 16; |
| 686 | u4_empty_blk_cntrl = (~(u4_dc_cntrl | u4_blk_cntrl)) & 0xFF000000; |
| 687 | |
| 688 | /* The AC blocks starts from 2nd row */ |
| 689 | pi2_src += src_strd; |
| 690 | |
| 691 | DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id); |
| 692 | while (u4_blk_id < 8) |
| 693 | { |
| 694 | WORD32 dc_src_offset = u4_blk_id * i4_dc_inc; |
| 695 | |
| 696 | IND2SUB_CHROMA_MB(u4_blk_id, i4_offset_x, i4_offset_y); |
| 697 | |
| 698 | pu1_cur_4x4_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd; |
| 699 | pu1_cur_4x4_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd; |
| 700 | |
| 701 | ps_codec->pf_iquant_itrans_recon_chroma_4x4_dc( |
| 702 | pi2_dc_src + dc_src_offset, pu1_cur_4x4_prd_blk, |
| 703 | pu1_cur_4x4_out_blk, pred_strd, out_strd, NULL, NULL, 0, |
| 704 | NULL, pi2_dc_src + dc_src_offset); |
| 705 | /* Get next DC block to process */ |
| 706 | DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id); |
| 707 | } |
| 708 | |
| 709 | /* now process ac/mixed blocks */ |
| 710 | DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id); |
| 711 | while (u4_blk_id < 8) |
| 712 | { |
| 713 | WORD32 i4_src_offset = src_strd * u4_blk_id; |
| 714 | WORD32 dc_src_offset = i4_dc_inc * u4_blk_id; |
| 715 | |
| 716 | IND2SUB_CHROMA_MB(u4_blk_id, i4_offset_x, i4_offset_y); |
| 717 | |
| 718 | pu1_cur_4x4_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd; |
| 719 | pu1_cur_4x4_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd; |
| 720 | |
| 721 | ps_codec->pf_iquant_itrans_recon_chroma_4x4(pi2_src + i4_src_offset, |
| 722 | pu1_cur_4x4_prd_blk, |
| 723 | pu1_cur_4x4_out_blk, |
| 724 | pred_strd, out_strd, |
| 725 | pu2_iscale_mat, |
| 726 | pu2_weigh_mat, qp_div, |
| 727 | (WORD16 *) pi4_tmp, |
| 728 | pi2_dc_src + dc_src_offset); |
| 729 | |
| 730 | DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id); |
| 731 | } |
| 732 | |
| 733 | /* Now process empty blocks */ |
| 734 | DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id); |
| 735 | while (u4_blk_id < 8) |
| 736 | { |
| 737 | IND2SUB_CHROMA_MB(u4_blk_id, i4_offset_x, i4_offset_y); |
| 738 | |
| 739 | pu1_cur_4x4_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd; |
| 740 | pu1_cur_4x4_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd; |
| 741 | |
| 742 | ps_codec->pf_interleave_copy(pu1_cur_4x4_prd_blk, pu1_cur_4x4_out_blk, |
| 743 | pred_strd, out_strd, SIZE_4X4_BLK_VERT, |
| 744 | SIZE_4X4_BLK_HRZ); |
| 745 | |
| 746 | DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id); |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | /** |
| 751 | ****************************************************************************** |
| 752 | * |
| 753 | * @brief This function packs residue of an i16x16 luma mb for entropy coding |
| 754 | * |
| 755 | * @par Description |
| 756 | * An i16 macro block contains two classes of units, dc 4x4 block and |
| 757 | * 4x4 ac blocks. while packing the mb, the dc block is sent first, and |
| 758 | * the 16 ac blocks are sent next in scan order. Each and every block is |
| 759 | * represented by 3 parameters (nnz, significant coefficient map and the |
| 760 | * residue coefficients itself). If a 4x4 unit does not have any coefficients |
| 761 | * then only nnz is sent. Inside a 4x4 block the individual coefficients are |
| 762 | * sent in scan order. |
| 763 | * |
| 764 | * The first byte of each block will be nnz of the block, if it is non zero, |
| 765 | * a 2 byte significance map is sent. This is followed by nonzero coefficients. |
| 766 | * This is repeated for 1 dc + 16 ac blocks. |
| 767 | * |
| 768 | * @param[in] pi2_res_mb |
| 769 | * pointer to residue mb |
| 770 | * |
| 771 | * @param[in, out] pv_mb_coeff_data |
| 772 | * buffer pointing to packed residue coefficients |
| 773 | * |
| 774 | * @param[in] u4_res_strd |
| 775 | * residual block stride |
| 776 | * |
| 777 | * @param[out] u1_cbp_l |
| 778 | * coded block pattern luma |
| 779 | * |
| 780 | * @param[in] pu1_nnz |
| 781 | * number of non zero coefficients in each 4x4 unit |
| 782 | * |
| 783 | * @param[out] |
| 784 | * Control signal for inverse transform of 16x16 blocks |
| 785 | * |
| 786 | * @return none |
| 787 | * |
| 788 | * @ remarks |
| 789 | * |
| 790 | ****************************************************************************** |
| 791 | */ |
| 792 | void ih264e_pack_l_mb_i16(WORD16 *pi2_res_mb, |
| 793 | void **pv_mb_coeff_data, |
| 794 | WORD32 i4_res_strd, |
| 795 | UWORD8 *u1_cbp_l, |
| 796 | UWORD8 *pu1_nnz, |
| 797 | UWORD32 *pu4_cntrl) |
| 798 | { |
| 799 | /* pointer to packed sub block buffer space */ |
| 800 | tu_sblk_coeff_data_t *ps_mb_coeff_data = (*pv_mb_coeff_data), *ps_mb_coeff_data_ac; |
| 801 | |
| 802 | /* no of non zero coefficients in the current sub block */ |
| 803 | UWORD32 u4_nnz_cnt; |
| 804 | |
| 805 | /* significant coefficient map */ |
| 806 | UWORD32 u4_s_map; |
| 807 | |
| 808 | /* pointer to scanning matrix */ |
| 809 | const UWORD8 *pu1_scan_order; |
| 810 | |
| 811 | /* number of non zeros in sub block */ |
| 812 | UWORD32 u4_nnz; |
| 813 | |
| 814 | /* coeff scan order */ |
| 815 | const UWORD8 u1_scan_order[16] = {0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15}; |
| 816 | |
| 817 | /* temp var */ |
| 818 | UWORD32 coeff_cnt, mask, b4,u4_cntrl=0; |
| 819 | |
| 820 | /*DC and AC coeff pointers*/ |
| 821 | WORD16 *pi2_res_mb_ac,*pi2_res_mb_dc; |
| 822 | |
| 823 | /********************************************************/ |
| 824 | /* pack dc coeff data for entropy coding */ |
| 825 | /********************************************************/ |
| 826 | |
| 827 | pi2_res_mb_dc = pi2_res_mb; |
| 828 | pu1_scan_order = gu1_luma_scan_order_dc; |
| 829 | |
| 830 | u4_nnz = *pu1_nnz; |
| 831 | u4_cntrl = 0; |
| 832 | |
| 833 | /* write number of non zero coefficients */ |
| 834 | ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz; |
| 835 | |
| 836 | if (u4_nnz) |
| 837 | { |
| 838 | for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++) |
| 839 | { |
| 840 | if (pi2_res_mb_dc[pu1_scan_order[coeff_cnt]]) |
| 841 | { |
| 842 | /* write residue */ |
| 843 | ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb_dc[pu1_scan_order[coeff_cnt]]; |
| 844 | u4_s_map |= mask; |
| 845 | } |
| 846 | mask <<= 1; |
| 847 | } |
| 848 | /* write significant coeff map */ |
| 849 | ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16); |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 850 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 851 | |
| 852 | u4_cntrl = 0x00008000;// Set DC bit in ctrl code |
| 853 | } |
| 854 | else |
| 855 | { |
| 856 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue; |
| 857 | } |
| 858 | |
| 859 | /********************************************************/ |
| 860 | /* pack ac coeff data for entropy coding */ |
| 861 | /********************************************************/ |
| 862 | |
| 863 | pu1_nnz ++; |
| 864 | pu1_scan_order = gu1_luma_scan_order; |
| 865 | pi2_res_mb += i4_res_strd; /*Move to AC block*/ |
| 866 | |
| 867 | ps_mb_coeff_data_ac = (*pv_mb_coeff_data); |
| 868 | |
| 869 | for (b4 = 0; b4 < 16; b4++) |
| 870 | { |
| 871 | ps_mb_coeff_data = (*pv_mb_coeff_data); |
| 872 | |
| 873 | u4_nnz = pu1_nnz[u1_scan_order[b4]]; |
| 874 | |
| 875 | /* Jump according to the scan order */ |
| 876 | pi2_res_mb_ac = pi2_res_mb + (i4_res_strd * u1_scan_order[b4]); |
| 877 | |
| 878 | /* |
| 879 | * Since this is a i16x16 block, we should not count dc coeff on indi |
| 880 | * vidual 4x4 blocks to nnz. But due to the implementation of 16x16 |
| 881 | * trans function, we add dc's nnz to u4_nnz too. Hence we adjust that |
| 882 | * here |
| 883 | */ |
| 884 | u4_nnz -= (pi2_res_mb_ac[0] != 0); |
| 885 | |
| 886 | /* write number of non zero coefficients */ |
| 887 | ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz; |
| 888 | |
| 889 | if (u4_nnz) |
| 890 | { |
| 891 | for (u4_nnz_cnt = 0, coeff_cnt = 1, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++) |
| 892 | { |
| 893 | if (pi2_res_mb_ac[pu1_scan_order[coeff_cnt]]) |
| 894 | { |
| 895 | /* write residue */ |
| 896 | ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb_ac[pu1_scan_order[coeff_cnt]]; |
| 897 | u4_s_map |= mask; |
| 898 | } |
| 899 | mask <<= 1; |
| 900 | } |
| 901 | /* write significant coeff map */ |
| 902 | ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16); |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 903 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 904 | *u1_cbp_l = 15; |
| 905 | |
| 906 | u4_cntrl |= (1 << (31 - u1_scan_order[b4])); |
| 907 | } |
| 908 | else |
| 909 | { |
| 910 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue; |
| 911 | } |
| 912 | |
| 913 | } |
| 914 | |
| 915 | if (!(*u1_cbp_l)) |
| 916 | { |
| 917 | (*pv_mb_coeff_data) = ps_mb_coeff_data_ac; |
| 918 | } |
| 919 | |
| 920 | /* Store the cntrl signal */ |
| 921 | (*pu4_cntrl) = u4_cntrl; |
| 922 | return; |
| 923 | } |
| 924 | |
| 925 | /** |
| 926 | ****************************************************************************** |
| 927 | * |
| 928 | * @brief This function packs residue of an p16x16 luma mb for entropy coding |
| 929 | * |
| 930 | * @par Description |
| 931 | * A p16x16 macro block contains two classes of units 16 4x4 ac blocks. |
| 932 | * while packing the mb, the dc block is sent first, and |
| 933 | * the 16 ac blocks are sent next in scan order. Each and every block is |
| 934 | * represented by 3 parameters (nnz, significant coefficient map and the |
| 935 | * residue coefficients itself). If a 4x4 unit does not have any coefficients |
| 936 | * then only nnz is sent. Inside a 4x4 block the individual coefficients are |
| 937 | * sent in scan order. |
| 938 | * |
| 939 | * The first byte of each block will be nnz of the block, if it is non zero, |
| 940 | * a 2 byte significance map is sent. This is followed by nonzero coefficients. |
| 941 | * This is repeated for 1 dc + 16 ac blocks. |
| 942 | * |
| 943 | * @param[in] pi2_res_mb |
| 944 | * pointer to residue mb |
| 945 | * |
| 946 | * @param[in, out] pv_mb_coeff_data |
| 947 | * buffer pointing to packed residue coefficients |
| 948 | * |
| 949 | * @param[in] i4_res_strd |
| 950 | * residual block stride |
| 951 | * |
| 952 | * @param[out] u1_cbp_l |
| 953 | * coded block pattern luma |
| 954 | * |
| 955 | * @param[in] pu1_nnz |
| 956 | * number of non zero coefficients in each 4x4 unit |
| 957 | * |
| 958 | * @param[out] pu4_cntrl |
| 959 | * Control signal for inverse transform |
| 960 | * |
| 961 | * @return none |
| 962 | * |
| 963 | * @remarks Killing coffs not yet coded |
| 964 | * |
| 965 | ****************************************************************************** |
| 966 | */ |
| 967 | void ih264e_pack_l_mb(WORD16 *pi2_res_mb, |
| 968 | void **pv_mb_coeff_data, |
| 969 | WORD32 i4_res_strd, |
| 970 | UWORD8 *u1_cbp_l, |
| 971 | UWORD8 *pu1_nnz, |
| 972 | UWORD32 u4_thres_resi, |
| 973 | UWORD32 *pu4_cntrl) |
| 974 | { |
| 975 | /* pointer to packed sub block buffer space */ |
| 976 | tu_sblk_coeff_data_t *ps_mb_coeff_data, *ps_mb_coeff_data_b8, *ps_mb_coeff_data_mb; |
| 977 | |
| 978 | /* no of non zero coefficients in the current sub block */ |
| 979 | UWORD32 u4_nnz_cnt; |
| 980 | |
| 981 | /* significant coefficient map */ |
| 982 | UWORD32 u4_s_map; |
| 983 | |
| 984 | /* pointer to scanning matrix */ |
| 985 | const UWORD8 *pu1_scan_order = gu1_luma_scan_order; |
| 986 | |
| 987 | /* number of non zeros in sub block */ |
| 988 | UWORD32 u4_nnz; |
| 989 | |
| 990 | /* pointer to residual sub block */ |
| 991 | WORD16 *pi2_res_sb; |
| 992 | |
| 993 | /* coeff scan order */ |
| 994 | const UWORD8 u1_scan_order[16] = {0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15}; |
| 995 | |
| 996 | /* coeff cost */ |
| 997 | const UWORD8 *pu1_coeff_cost = gu1_coeff_cost; |
| 998 | |
| 999 | /* temp var */ |
| 1000 | UWORD32 u4_mb_coeff_cost = 0, u4_b8_coeff_cost = 0, coeff_cnt, mask, u4_cntrl = 0, b4, b8; |
| 1001 | |
| 1002 | /* temp var */ |
| 1003 | WORD32 i4_res_val, i4_run = -1, dcac_block; |
| 1004 | |
| 1005 | /* When Hadamard transform is disabled, first row values are dont care, ignore them */ |
| 1006 | pi2_res_mb += i4_res_strd; |
| 1007 | |
| 1008 | /* When Hadamard transform is disabled, first unit value is dont care, ignore this */ |
| 1009 | pu1_nnz ++; |
| 1010 | |
| 1011 | ps_mb_coeff_data_mb = ps_mb_coeff_data_b8 = (*pv_mb_coeff_data); |
| 1012 | |
| 1013 | /********************************************************/ |
| 1014 | /* pack coeff data for entropy coding */ |
| 1015 | /********************************************************/ |
| 1016 | |
| 1017 | for (b4 = 0; b4 < 16; b4++) |
| 1018 | { |
| 1019 | ps_mb_coeff_data = (*pv_mb_coeff_data); |
| 1020 | |
| 1021 | b8 = b4 >> 2; |
| 1022 | |
| 1023 | u4_nnz = pu1_nnz[u1_scan_order[b4]]; |
| 1024 | |
| 1025 | /* Jump according to the scan order */ |
| 1026 | pi2_res_sb = pi2_res_mb + (i4_res_strd * u1_scan_order[b4]); |
| 1027 | |
| 1028 | /* write number of non zero coefficients */ |
| 1029 | ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz; |
| 1030 | |
| 1031 | if (u4_nnz) |
| 1032 | { |
| 1033 | for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++) |
| 1034 | { |
| 1035 | /* number of runs of zero before, this is used to compute coeff cost */ |
| 1036 | i4_run++; |
| 1037 | |
| 1038 | i4_res_val = pi2_res_sb[pu1_scan_order[coeff_cnt]]; |
| 1039 | |
| 1040 | if (i4_res_val) |
| 1041 | { |
| 1042 | /* write residue */ |
| 1043 | ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = i4_res_val; |
| 1044 | u4_s_map |= mask; |
| 1045 | |
| 1046 | if (u4_thres_resi) |
| 1047 | { |
| 1048 | /* compute coeff cost */ |
| 1049 | if (i4_res_val == 1 || i4_res_val == -1) |
| 1050 | { |
| 1051 | if (i4_run < 6) |
| 1052 | u4_b8_coeff_cost += pu1_coeff_cost[i4_run]; |
| 1053 | } |
| 1054 | else |
| 1055 | u4_b8_coeff_cost += 9; |
| 1056 | |
| 1057 | i4_run = -1; |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | mask <<= 1; |
| 1062 | } |
| 1063 | |
| 1064 | /* write significant coeff map */ |
| 1065 | ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16); |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 1066 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1067 | |
| 1068 | /* cbp */ |
| 1069 | *u1_cbp_l |= (1 << b8); |
| 1070 | |
| 1071 | /* Cntrl map for inverse transform computation |
| 1072 | * |
| 1073 | * If coeff_cnt is zero, it means that only nonzero was a dc coeff |
| 1074 | * Hence we have to set the 16 - u1_scan_order[b4]) position instead |
| 1075 | * of 31 - u1_scan_order[b4] |
| 1076 | */ |
| 1077 | dcac_block = (coeff_cnt == 0)?16:31; |
| 1078 | u4_cntrl |= (1 << (dcac_block - u1_scan_order[b4])); |
| 1079 | } |
| 1080 | else |
| 1081 | { |
| 1082 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue; |
| 1083 | } |
| 1084 | |
| 1085 | /* Decide if the 8x8 unit has to be sent for entropy coding? */ |
| 1086 | if ((b4+1) % 4 == 0) |
| 1087 | { |
| 1088 | if ( u4_thres_resi && (u4_b8_coeff_cost <= LUMA_SUB_BLOCK_SKIP_THRESHOLD) && |
| 1089 | (*u1_cbp_l & (1 << b8)) ) |
| 1090 | { |
| 1091 | |
| 1092 | |
| 1093 | /* |
| 1094 | * When we want to reset the full 8x8 block, we have to reset |
| 1095 | * both the dc and ac coeff bits hence we have the symmetric |
| 1096 | * arrangement of bits |
| 1097 | */ |
| 1098 | const UWORD32 cntrl_mask_map[4] = {0xcc00cc00, 0x33003300, 0x00cc00cc, 0x00330033}; |
| 1099 | |
| 1100 | /* restore cbp */ |
| 1101 | *u1_cbp_l = (*u1_cbp_l & (~(1 << b8))); |
| 1102 | |
| 1103 | /* correct cntrl flag */ |
| 1104 | u4_cntrl = u4_cntrl & (~cntrl_mask_map[(b4 >> 2)]); |
| 1105 | |
| 1106 | /* correct nnz */ |
| 1107 | pu1_nnz[u1_scan_order[b4 - 3]] = 0; |
| 1108 | pu1_nnz[u1_scan_order[b4 - 2]] = 0; |
| 1109 | pu1_nnz[u1_scan_order[b4 - 1]] = 0; |
| 1110 | pu1_nnz[u1_scan_order[b4]] = 0; |
| 1111 | |
| 1112 | /* reset blk cost */ |
| 1113 | u4_b8_coeff_cost = 0; |
| 1114 | } |
| 1115 | |
| 1116 | if (!(*u1_cbp_l & (1 << b8))) |
| 1117 | { |
| 1118 | (*pv_mb_coeff_data) = ps_mb_coeff_data_b8; |
| 1119 | } |
| 1120 | |
| 1121 | u4_mb_coeff_cost += u4_b8_coeff_cost; |
| 1122 | |
| 1123 | u4_b8_coeff_cost = 0; |
| 1124 | i4_run = -1; |
| 1125 | ps_mb_coeff_data_b8 = (*pv_mb_coeff_data); |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | if (u4_thres_resi && (u4_mb_coeff_cost <= LUMA_BLOCK_SKIP_THRESHOLD) |
| 1130 | && (*u1_cbp_l)) |
| 1131 | { |
| 1132 | (*pv_mb_coeff_data) = ps_mb_coeff_data_mb; |
| 1133 | *u1_cbp_l = 0; |
| 1134 | u4_cntrl = 0; |
| 1135 | memset(pu1_nnz, 0, 16); |
| 1136 | } |
| 1137 | |
| 1138 | (*pu4_cntrl) = u4_cntrl; |
| 1139 | |
| 1140 | return; |
| 1141 | } |
| 1142 | |
| 1143 | /** |
| 1144 | ****************************************************************************** |
| 1145 | * |
| 1146 | * @brief This function packs residue of an i8x8 chroma mb for entropy coding |
| 1147 | * |
| 1148 | * @par Description |
| 1149 | * An i8 chroma macro block contains two classes of units, dc 2x2 block and |
| 1150 | * 4x4 ac blocks. while packing the mb, the dc block is sent first, and |
| 1151 | * the 4 ac blocks are sent next in scan order. Each and every block is |
| 1152 | * represented by 3 parameters (nnz, significant coefficient map and the |
| 1153 | * residue coefficients itself). If a 4x4 unit does not have any coefficients |
| 1154 | * then only nnz is sent. Inside a 4x4 block the individual coefficients are |
| 1155 | * sent in scan order. |
| 1156 | * |
| 1157 | * The first byte of each block will be nnz of the block, if it is non zero, |
| 1158 | * a 2 byte significance map is sent. This is followed by nonzero coefficients. |
| 1159 | * This is repeated for 1 dc + 4 ac blocks. |
| 1160 | * |
| 1161 | * @param[in] pi2_res_mb |
| 1162 | * pointer to residue mb |
| 1163 | * |
| 1164 | * @param[in, out] pv_mb_coeff_data |
| 1165 | * buffer pointing to packed residue coefficients |
| 1166 | * |
| 1167 | * @param[in] u4_res_strd |
| 1168 | * residual block stride |
| 1169 | * |
| 1170 | * @param[out] u1_cbp_c |
| 1171 | * coded block pattern chroma |
| 1172 | * |
| 1173 | * @param[in] pu1_nnz |
| 1174 | * number of non zero coefficients in each 4x4 unit |
| 1175 | * |
| 1176 | * @param[out] pu1_nnz |
| 1177 | * Control signal for inverse transform |
| 1178 | * |
| 1179 | * @param[in] u4_swap_uv |
| 1180 | * Swaps the order of U and V planes in entropy bitstream |
| 1181 | * |
| 1182 | * @return none |
| 1183 | * |
| 1184 | * @ remarks |
| 1185 | * |
| 1186 | ****************************************************************************** |
| 1187 | */ |
| 1188 | void ih264e_pack_c_mb(WORD16 *pi2_res_mb, |
| 1189 | void **pv_mb_coeff_data, |
| 1190 | WORD32 i4_res_strd, |
| 1191 | UWORD8 *u1_cbp_c, |
| 1192 | UWORD8 *pu1_nnz, |
| 1193 | UWORD32 u4_thres_resi, |
| 1194 | UWORD32 *pu4_cntrl, |
| 1195 | UWORD32 u4_swap_uv) |
| 1196 | { |
| 1197 | /* pointer to packed sub block buffer space */ |
| 1198 | tu_sblk_coeff_data_t *ps_mb_coeff_data = (*pv_mb_coeff_data); |
| 1199 | tu_sblk_coeff_data_t *ps_mb_coeff_data_dc, *ps_mb_coeff_data_ac; |
| 1200 | |
| 1201 | /* nnz pointer */ |
| 1202 | UWORD8 *pu1_nnz_ac, *pu1_nnz_dc; |
| 1203 | |
| 1204 | /* nnz counter */ |
| 1205 | UWORD32 u4_nnz_cnt; |
| 1206 | |
| 1207 | /* significant coefficient map */ |
| 1208 | UWORD32 u4_s_map; |
| 1209 | |
| 1210 | /* pointer to scanning matrix */ |
| 1211 | const UWORD8 *pu1_scan_order; |
| 1212 | |
| 1213 | /* no of non zero coefficients in the current sub block */ |
| 1214 | UWORD32 u4_nnz; |
| 1215 | |
| 1216 | /* pointer to residual sub block, res val */ |
| 1217 | WORD16 *pi2_res_sb, i2_res_val; |
| 1218 | |
| 1219 | /* temp var */ |
| 1220 | UWORD32 coeff_cnt, mask, b4,plane; |
| 1221 | |
| 1222 | /* temp var */ |
| 1223 | UWORD32 u4_coeff_cost; |
| 1224 | WORD32 i4_run; |
| 1225 | |
| 1226 | /* coeff cost */ |
| 1227 | const UWORD8 *pu1_coeff_cost = gu1_coeff_cost; |
| 1228 | |
| 1229 | /* pointer to packed buffer space */ |
| 1230 | UWORD32 *pu4_mb_coeff_data = NULL; |
| 1231 | |
| 1232 | /* ac coded block pattern */ |
| 1233 | UWORD8 u1_cbp_ac; |
| 1234 | |
| 1235 | /* Variable to store the current bit pos in cntrl variable*/ |
| 1236 | UWORD32 cntrl_pos = 0; |
| 1237 | |
| 1238 | /********************************************************/ |
| 1239 | /* pack dc coeff data for entropy coding */ |
| 1240 | /********************************************************/ |
| 1241 | pu1_scan_order = gu1_chroma_scan_order_dc; |
| 1242 | pi2_res_sb = pi2_res_mb; |
| 1243 | pu1_nnz_dc = pu1_nnz; |
| 1244 | (*pu4_cntrl) = 0; |
| 1245 | cntrl_pos = 15; |
| 1246 | ps_mb_coeff_data_dc = (*pv_mb_coeff_data); |
| 1247 | |
| 1248 | /* Color space conversion between SP_UV and SP_VU |
| 1249 | * We always assume SP_UV for all the processing |
| 1250 | * Hence to get proper stream output we need to swap U and V channels here |
| 1251 | * |
| 1252 | * For that there are two paths we need to look for |
| 1253 | * One is the path to bitstream , these variables should have the proper input |
| 1254 | * configured UV or VU |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 1255 | * For the other path the inverse transform variables should have what ever ordering the |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1256 | * input had |
| 1257 | */ |
| 1258 | |
| 1259 | if (u4_swap_uv) |
| 1260 | { |
| 1261 | pu1_nnz_dc += 5;/* Move to NNZ of V planve */ |
| 1262 | pi2_res_sb += 4;/* Move to DC coff of V plane */ |
| 1263 | |
| 1264 | cntrl_pos = 14; /* Control bit for V plane */ |
| 1265 | } |
| 1266 | |
| 1267 | for (plane = 0; plane < 2; plane++) |
| 1268 | { |
| 1269 | ps_mb_coeff_data = (*pv_mb_coeff_data); |
| 1270 | |
| 1271 | u4_nnz = *pu1_nnz_dc; |
| 1272 | /* write number of non zero coefficients U/V */ |
| 1273 | ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz; |
| 1274 | |
| 1275 | if (u4_nnz) |
| 1276 | { |
| 1277 | for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++) |
| 1278 | { |
| 1279 | i2_res_val = pi2_res_sb[pu1_scan_order[coeff_cnt]]; |
| 1280 | if (i2_res_val) |
| 1281 | { |
| 1282 | /* write residue U/V */ |
| 1283 | ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = i2_res_val; |
| 1284 | u4_s_map |= mask; |
| 1285 | } |
| 1286 | mask <<= 1; |
| 1287 | } |
| 1288 | /* write significant coeff map U/V */ |
| 1289 | ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16); |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 1290 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1291 | *u1_cbp_c = 1; |
| 1292 | |
| 1293 | (*pu4_cntrl) |= (1 << cntrl_pos); |
| 1294 | } |
| 1295 | else |
| 1296 | { |
| 1297 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue; |
| 1298 | } |
| 1299 | |
| 1300 | if (u4_swap_uv) |
| 1301 | { |
| 1302 | cntrl_pos++; /* Control bit for U plane */ |
| 1303 | pu1_nnz_dc -= 5; /* Move to NNZ of U plane */ |
| 1304 | pi2_res_sb -= 4; /* Move to DC coff of U plane */ |
| 1305 | |
| 1306 | } |
| 1307 | else |
| 1308 | { |
| 1309 | cntrl_pos--; /* Control bit for U plane */ |
| 1310 | pu1_nnz_dc += 5; /* 4 for AC NNZ and 1 for DC */ |
| 1311 | pi2_res_sb += 4; /* Move to DC coff of V plane */ |
| 1312 | } |
| 1313 | } |
| 1314 | |
| 1315 | /********************************************************/ |
| 1316 | /* pack ac coeff data for entropy coding */ |
| 1317 | /********************************************************/ |
| 1318 | |
| 1319 | pu1_scan_order = gu1_chroma_scan_order; |
| 1320 | ps_mb_coeff_data_ac = (*pv_mb_coeff_data); |
| 1321 | |
| 1322 | if (u4_swap_uv) |
| 1323 | { |
| 1324 | pi2_res_sb = pi2_res_mb + i4_res_strd * 5; /* Move to V plane ,ie 1dc row+ 4 ac row */ |
| 1325 | cntrl_pos = 27; /* The control bits are to be added for V bloc ie 31-4 th bit */ |
| 1326 | pu1_nnz_ac = pu1_nnz + 6;/*Move the nnz to V block NNZ 1 dc + 1dc + 4 ac */ |
| 1327 | } |
| 1328 | else |
| 1329 | { |
| 1330 | pi2_res_sb = pi2_res_mb + i4_res_strd; /* Move to U plane ,ie 1dc row */ |
| 1331 | cntrl_pos = 31; |
| 1332 | pu1_nnz_ac = pu1_nnz + 1; /* Move the nnz to V block NNZ 1 dc */ |
| 1333 | } |
| 1334 | |
| 1335 | for (plane = 0; plane < 2; plane++) |
| 1336 | { |
| 1337 | pu4_mb_coeff_data = (*pv_mb_coeff_data); |
| 1338 | |
| 1339 | u4_coeff_cost = 0; |
| 1340 | i4_run = -1; |
| 1341 | |
| 1342 | /* get the current cbp, so that it automatically |
| 1343 | * gets reverted in case of zero ac values */ |
| 1344 | u1_cbp_ac = *u1_cbp_c; |
| 1345 | |
| 1346 | for (b4 = 0; b4 < 4; b4++) |
| 1347 | { |
| 1348 | ps_mb_coeff_data = (*pv_mb_coeff_data); |
| 1349 | |
| 1350 | u4_nnz = *pu1_nnz_ac; |
| 1351 | |
| 1352 | /* |
| 1353 | * We are scanning only ac coeffs, but the nnz is for the |
| 1354 | * complete 4x4 block. Hence we have to discount the nnz contributed |
| 1355 | * by the dc coefficient |
| 1356 | */ |
| 1357 | u4_nnz -= (pi2_res_sb[0]!=0); |
| 1358 | |
| 1359 | /* write number of non zero coefficients U/V */ |
| 1360 | ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz; |
| 1361 | |
| 1362 | if (u4_nnz) |
| 1363 | { |
| 1364 | for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++) |
| 1365 | { |
| 1366 | i2_res_val = pi2_res_sb[pu1_scan_order[coeff_cnt]]; |
| 1367 | |
| 1368 | i4_run++; |
| 1369 | |
| 1370 | if (i2_res_val) |
| 1371 | { |
| 1372 | /* write residue U/V */ |
| 1373 | ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = i2_res_val; |
| 1374 | u4_s_map |= mask; |
| 1375 | |
| 1376 | if ( u4_thres_resi && (u4_coeff_cost < CHROMA_BLOCK_SKIP_THRESHOLD) ) |
| 1377 | { |
| 1378 | /* compute coeff cost */ |
| 1379 | if (i2_res_val == 1 || i2_res_val == -1) |
| 1380 | { |
| 1381 | if (i4_run < 6) |
| 1382 | u4_coeff_cost += pu1_coeff_cost[i4_run]; |
| 1383 | } |
| 1384 | else |
| 1385 | u4_coeff_cost += 9; |
| 1386 | |
| 1387 | i4_run = -1; |
| 1388 | } |
| 1389 | } |
| 1390 | mask <<= 1; |
| 1391 | } |
| 1392 | |
| 1393 | /* write significant coeff map U/V */ |
| 1394 | ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16); |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 1395 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1396 | u1_cbp_ac = 2; |
| 1397 | |
| 1398 | (*pu4_cntrl) |= 1 << cntrl_pos; |
| 1399 | } |
| 1400 | else |
| 1401 | { |
| 1402 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue; |
| 1403 | } |
| 1404 | |
| 1405 | pu1_nnz_ac++; |
| 1406 | pi2_res_sb += i4_res_strd; |
| 1407 | cntrl_pos--; |
| 1408 | } |
| 1409 | |
| 1410 | /* reset block */ |
| 1411 | if (u4_thres_resi && (u4_coeff_cost < CHROMA_BLOCK_SKIP_THRESHOLD)) |
| 1412 | { |
| 1413 | pu4_mb_coeff_data[0] = 0; |
| 1414 | pu4_mb_coeff_data[1] = 0; |
| 1415 | pu4_mb_coeff_data[2] = 0; |
| 1416 | pu4_mb_coeff_data[3] = 0; |
| 1417 | (*pv_mb_coeff_data) = pu4_mb_coeff_data + 4; |
| 1418 | |
| 1419 | /* Generate the control signal */ |
| 1420 | /* Zero out the current plane's AC coefficients */ |
| 1421 | (*pu4_cntrl) &= ((plane == u4_swap_uv) ? 0x0FFFFFFF : 0xF0FFFFFF); |
| 1422 | |
| 1423 | /* Similarly do for the NNZ also */ |
| 1424 | *(pu1_nnz_ac - 4) = 0; |
| 1425 | *(pu1_nnz_ac - 3) = 0; |
| 1426 | *(pu1_nnz_ac - 2) = 0; |
| 1427 | *(pu1_nnz_ac - 1) = 0; |
| 1428 | } |
| 1429 | else |
| 1430 | { |
| 1431 | *u1_cbp_c = u1_cbp_ac; |
| 1432 | } |
| 1433 | |
| 1434 | if (u4_swap_uv) |
| 1435 | { |
| 1436 | pi2_res_sb = pi2_res_mb + i4_res_strd; /* Move to V plane ,ie 1dc row+ 4 ac row + 1 dc row */ |
| 1437 | cntrl_pos = 31; /* The control bits are to be added for V bloc ie 31-4 th bit */ |
| 1438 | pu1_nnz_ac = pu1_nnz + 1; /* Move the nnz to V block NNZ 1 dc + 1dc + 4 ac */ |
| 1439 | |
| 1440 | pu1_nnz_ac = pu1_nnz + 1; |
| 1441 | } |
| 1442 | else |
| 1443 | pu1_nnz_ac = pu1_nnz + 6; /* Go to nnz of V plane */ |
| 1444 | } |
| 1445 | |
| 1446 | /* restore the ptr basing on cbp */ |
| 1447 | if (*u1_cbp_c == 0) |
| 1448 | { |
| 1449 | (*pv_mb_coeff_data) = ps_mb_coeff_data_dc; |
| 1450 | } |
| 1451 | else if (*u1_cbp_c == 1) |
| 1452 | { |
| 1453 | (*pv_mb_coeff_data) = ps_mb_coeff_data_ac; |
| 1454 | } |
| 1455 | |
| 1456 | return ; |
| 1457 | } |
| 1458 | |
| 1459 | /** |
| 1460 | ******************************************************************************* |
| 1461 | * |
| 1462 | * @brief performs luma core coding when intra mode is i16x16 |
| 1463 | * |
| 1464 | * @par Description: |
| 1465 | * If the current mb is to be coded as intra of mb type i16x16, the mb is first |
| 1466 | * predicted using one of i16x16 prediction filters, basing on the intra mode |
| 1467 | * chosen. Then, error is computed between the input blk and the estimated blk. |
| 1468 | * This error is transformed (hierarchical transform i.e., dct followed by hada- |
| 1469 | * -mard), quantized. The quantized coefficients are packed in scan order for |
| 1470 | * entropy coding. |
| 1471 | * |
| 1472 | * @param[in] ps_proc_ctxt |
| 1473 | * pointer to the current macro block context |
| 1474 | * |
| 1475 | * @returns u1_cbp_l |
| 1476 | * coded block pattern luma |
| 1477 | * |
| 1478 | * @remarks none |
| 1479 | * |
| 1480 | ******************************************************************************* |
| 1481 | */ |
| 1482 | |
| 1483 | UWORD8 ih264e_code_luma_intra_macroblock_16x16(process_ctxt_t *ps_proc) |
| 1484 | { |
| 1485 | /* Codec Context */ |
| 1486 | codec_t *ps_codec = ps_proc->ps_codec; |
| 1487 | |
| 1488 | /* pointer to ref macro block */ |
| 1489 | UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_luma; |
| 1490 | |
| 1491 | /* pointer to src macro block */ |
| 1492 | UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_luma; |
| 1493 | |
| 1494 | /* pointer to prediction macro block */ |
| 1495 | UWORD8 *pu1_pred_mb = NULL; |
| 1496 | |
| 1497 | /* pointer to residual macro block */ |
| 1498 | WORD16 *pi2_res_mb = ps_proc->pi2_res_buf; |
| 1499 | |
| 1500 | /* strides */ |
| 1501 | WORD32 i4_src_strd = ps_proc->i4_src_strd; |
| 1502 | WORD32 i4_rec_strd = ps_proc->i4_rec_strd; |
| 1503 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 1504 | WORD32 i4_res_strd = ps_proc->i4_res_strd; |
| 1505 | |
| 1506 | /* intra mode */ |
| 1507 | UWORD8 u1_intra_mode = ps_proc->u1_l_i16_mode; |
| 1508 | |
| 1509 | /* coded block pattern */ |
| 1510 | UWORD8 u1_cbp_l = 0; |
| 1511 | |
| 1512 | /* number of non zero coeffs*/ |
| 1513 | UWORD32 au4_nnz[5]; |
| 1514 | UWORD8 *pu1_nnz = (UWORD8 *)au4_nnz; |
| 1515 | |
| 1516 | /*Cntrol signal for itrans*/ |
| 1517 | UWORD32 u4_cntrl; |
| 1518 | |
| 1519 | /* quantization parameters */ |
| 1520 | quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0]; |
| 1521 | |
| 1522 | /* pointer to packed mb coeff data */ |
| 1523 | void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data); |
| 1524 | |
| 1525 | /* init nnz */ |
| 1526 | au4_nnz[0] = 0; |
| 1527 | au4_nnz[1] = 0; |
| 1528 | au4_nnz[2] = 0; |
| 1529 | au4_nnz[3] = 0; |
| 1530 | au4_nnz[4] = 0; |
| 1531 | |
| 1532 | if (u1_intra_mode == PLANE_I16x16) |
| 1533 | { |
| 1534 | pu1_pred_mb = ps_proc->pu1_pred_mb_intra_16x16_plane; |
| 1535 | } |
| 1536 | else |
| 1537 | { |
| 1538 | pu1_pred_mb = ps_proc->pu1_pred_mb_intra_16x16; |
| 1539 | } |
| 1540 | |
| 1541 | /********************************************************/ |
| 1542 | /* error estimation, */ |
| 1543 | /* transform */ |
| 1544 | /* quantization */ |
| 1545 | /********************************************************/ |
| 1546 | ih264e_luma_16x16_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb, |
| 1547 | pu1_pred_mb, pi2_res_mb, |
| 1548 | i4_src_strd, i4_pred_strd, |
| 1549 | i4_res_strd, |
| 1550 | ps_qp_params->pu2_scale_mat, |
| 1551 | ps_qp_params->pu2_thres_mat, |
| 1552 | ps_qp_params->u1_qbits, |
| 1553 | ps_qp_params->u4_dead_zone, |
| 1554 | pu1_nnz, ENABLE_DC_TRANSFORM); |
| 1555 | |
| 1556 | /********************************************************/ |
| 1557 | /* pack coeff data for entropy coding */ |
| 1558 | /********************************************************/ |
| 1559 | ih264e_pack_l_mb_i16(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_l, |
| 1560 | pu1_nnz, &u4_cntrl); |
| 1561 | |
| 1562 | /********************************************************/ |
| 1563 | /* ierror estimation, */ |
| 1564 | /* itransform */ |
| 1565 | /* iquantization */ |
| 1566 | /********************************************************/ |
| 1567 | /* |
| 1568 | *if refernce frame is not to be computed |
| 1569 | *we only need the right and bottom border 4x4 blocks to predict next intra |
| 1570 | *blocks, hence only compute them |
| 1571 | */ |
| 1572 | if (!ps_proc->u4_compute_recon) |
| 1573 | { |
| 1574 | u4_cntrl &= 0x111F8000; |
| 1575 | } |
| 1576 | |
| 1577 | if (u4_cntrl) |
| 1578 | { |
| 1579 | ih264e_luma_16x16_idctrans_iquant_itrans_recon( |
| 1580 | ps_codec, pi2_res_mb, pu1_pred_mb, pu1_ref_mb, |
| 1581 | i4_res_strd, i4_pred_strd, i4_rec_strd, |
| 1582 | ps_qp_params->pu2_iscale_mat, |
| 1583 | ps_qp_params->pu2_weigh_mat, ps_qp_params->u1_qp_div, |
| 1584 | u4_cntrl, ENABLE_DC_TRANSFORM, |
| 1585 | ps_proc->pv_scratch_buff); |
| 1586 | } |
| 1587 | else |
| 1588 | { |
| 1589 | ps_codec->pf_inter_pred_luma_copy(pu1_pred_mb, pu1_ref_mb, i4_pred_strd, |
| 1590 | i4_rec_strd, MB_SIZE, MB_SIZE, NULL, |
| 1591 | 0); |
| 1592 | } |
| 1593 | |
| 1594 | return (u1_cbp_l); |
| 1595 | } |
| 1596 | |
| 1597 | |
| 1598 | /** |
| 1599 | ******************************************************************************* |
| 1600 | * |
| 1601 | * @brief performs luma core coding when intra mode is i4x4 |
| 1602 | * |
| 1603 | * @par Description: |
| 1604 | * If the current mb is to be coded as intra of mb type i4x4, the mb is first |
| 1605 | * predicted using one of i4x4 prediction filters, basing on the intra mode |
| 1606 | * chosen. Then, error is computed between the input blk and the estimated blk. |
| 1607 | * This error is dct transformed and quantized. The quantized coefficients are |
| 1608 | * packed in scan order for entropy coding. |
| 1609 | * |
| 1610 | * @param[in] ps_proc_ctxt |
| 1611 | * pointer to the current macro block context |
| 1612 | * |
| 1613 | * @returns u1_cbp_l |
| 1614 | * coded block pattern luma |
| 1615 | * |
| 1616 | * @remarks |
| 1617 | * The traversal of 4x4 subblocks in the 16x16 macroblock is as per the scan order |
| 1618 | * mentioned in h.264 specification |
| 1619 | * |
| 1620 | ******************************************************************************* |
| 1621 | */ |
| 1622 | UWORD8 ih264e_code_luma_intra_macroblock_4x4(process_ctxt_t *ps_proc) |
| 1623 | { |
| 1624 | /* Codec Context */ |
| 1625 | codec_t *ps_codec = ps_proc->ps_codec; |
| 1626 | |
| 1627 | /* pointer to ref macro block */ |
| 1628 | UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_luma; |
| 1629 | |
| 1630 | /* pointer to src macro block */ |
| 1631 | UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_luma; |
| 1632 | |
| 1633 | /* pointer to prediction macro block */ |
| 1634 | UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb; |
| 1635 | |
| 1636 | /* pointer to residual macro block */ |
| 1637 | WORD16 *pi2_res_mb = ps_proc->pi2_res_buf; |
| 1638 | |
| 1639 | /* strides */ |
| 1640 | WORD32 i4_src_strd = ps_proc->i4_src_strd; |
| 1641 | WORD32 i4_rec_strd = ps_proc->i4_rec_strd; |
| 1642 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 1643 | |
| 1644 | /* pointer to neighbors: left, top, top-left */ |
| 1645 | UWORD8 *pu1_mb_a; |
| 1646 | UWORD8 *pu1_mb_b; |
| 1647 | UWORD8 *pu1_mb_c; |
| 1648 | UWORD8 *pu1_mb_d; |
| 1649 | |
| 1650 | /* intra mode */ |
| 1651 | UWORD8 u1_intra_mode = ps_proc->u1_l_i16_mode; |
| 1652 | |
| 1653 | /* neighbor availability */ |
| 1654 | WORD32 i4_ngbr_avbl; |
| 1655 | |
| 1656 | /* neighbor pels for intra prediction */ |
| 1657 | UWORD8 *pu1_ngbr_pels_i4 = ps_proc->au1_ngbr_pels; |
| 1658 | |
| 1659 | /* coded block pattern */ |
| 1660 | UWORD8 u1_cbp_l = 0; |
| 1661 | |
| 1662 | /* number of non zero coeffs*/ |
| 1663 | UWORD8 u1_nnz; |
| 1664 | |
| 1665 | /* quantization parameters */ |
| 1666 | quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0]; |
| 1667 | |
| 1668 | /* pointer to packed mb coeff data */ |
| 1669 | void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data); |
| 1670 | |
| 1671 | /* pointer to packed mb coeff data */ |
| 1672 | tu_sblk_coeff_data_t *ps_mb_coeff_data, *ps_mb_coeff_data_b8; |
| 1673 | |
| 1674 | /* no of non zero coefficients in the current sub block */ |
| 1675 | UWORD32 u4_nnz_cnt; |
| 1676 | |
| 1677 | /* significant coefficient map */ |
| 1678 | UWORD32 u4_s_map; |
| 1679 | |
| 1680 | /* pointer to scanning matrix */ |
| 1681 | const UWORD8 *pu1_scan_order = gu1_luma_scan_order; |
| 1682 | |
| 1683 | /*Dummy variable for 4x4 trans fucntion*/ |
| 1684 | WORD16 i2_dc_dummy; |
| 1685 | |
| 1686 | /* temp var */ |
| 1687 | UWORD32 i, b8, b4, u1_blk_x, u1_blk_y, u1_pix_x, u1_pix_y, coeff_cnt, mask; |
| 1688 | |
| 1689 | /* Process 16 4x4 lum sub-blocks of the MB in scan order */ |
| 1690 | for (b8 = 0; b8 < 4; b8++) |
| 1691 | { |
| 1692 | u1_blk_x = GET_BLK_RASTER_POS_X(b8) << 3; |
| 1693 | u1_blk_y = GET_BLK_RASTER_POS_Y(b8) << 3; |
| 1694 | |
| 1695 | /* if in case cbp for the 8x8 block is zero, send no residue */ |
| 1696 | ps_mb_coeff_data_b8 = *pv_mb_coeff_data; |
| 1697 | |
| 1698 | for (b4 = 0; b4 < 4; b4++) |
| 1699 | { |
| 1700 | /* index of pel in MB */ |
| 1701 | u1_pix_x = u1_blk_x + (GET_SUB_BLK_RASTER_POS_X(b4) << 2); |
| 1702 | u1_pix_y = u1_blk_y + (GET_SUB_BLK_RASTER_POS_Y(b4) << 2); |
| 1703 | |
| 1704 | /* Initialize source and reference pointers */ |
| 1705 | pu1_curr_mb = ps_proc->pu1_src_buf_luma + u1_pix_x + (u1_pix_y * i4_src_strd); |
| 1706 | pu1_ref_mb = ps_proc->pu1_rec_buf_luma + u1_pix_x + (u1_pix_y * i4_rec_strd); |
| 1707 | |
| 1708 | /* pointer to left of ref macro block */ |
| 1709 | pu1_mb_a = pu1_ref_mb - 1; |
| 1710 | /* pointer to top of ref macro block */ |
| 1711 | pu1_mb_b = pu1_ref_mb - i4_rec_strd; |
| 1712 | /* pointer to topright of ref macro block */ |
| 1713 | pu1_mb_c = pu1_mb_b + 4; |
| 1714 | /* pointer to topleft macro block */ |
| 1715 | pu1_mb_d = pu1_mb_b - 1; |
| 1716 | |
| 1717 | /* compute neighbor availability */ |
| 1718 | i4_ngbr_avbl = ps_proc->au1_ngbr_avbl_4x4_subblks[(b8 << 2) + b4]; |
| 1719 | |
| 1720 | /* sub block intra mode */ |
| 1721 | u1_intra_mode = ps_proc->au1_intra_luma_mb_4x4_modes[(b8 << 2) + b4]; |
| 1722 | |
| 1723 | /********************************************************/ |
| 1724 | /* gather prediction pels from neighbors for prediction */ |
| 1725 | /********************************************************/ |
| 1726 | /* left pels */ |
| 1727 | if (i4_ngbr_avbl & LEFT_MB_AVAILABLE_MASK) |
| 1728 | { |
| 1729 | for (i = 0; i < 4; i++) |
| 1730 | pu1_ngbr_pels_i4[4 - 1 - i] = pu1_mb_a[i * i4_rec_strd]; |
| 1731 | } |
| 1732 | else |
| 1733 | { |
| 1734 | memset(pu1_ngbr_pels_i4, 0, 4); |
| 1735 | } |
| 1736 | |
| 1737 | /* top pels */ |
| 1738 | if (i4_ngbr_avbl & TOP_MB_AVAILABLE_MASK) |
| 1739 | { |
| 1740 | memcpy(pu1_ngbr_pels_i4 + 4 + 1, pu1_mb_b, 4); |
| 1741 | } |
| 1742 | else |
| 1743 | { |
| 1744 | memset(pu1_ngbr_pels_i4 + 5, 0, 4); |
| 1745 | } |
| 1746 | /* top left pels */ |
| 1747 | if (i4_ngbr_avbl & TOP_LEFT_MB_AVAILABLE_MASK) |
| 1748 | { |
| 1749 | pu1_ngbr_pels_i4[4] = *pu1_mb_d; |
| 1750 | } |
| 1751 | else |
| 1752 | { |
| 1753 | pu1_ngbr_pels_i4[4] = 0; |
| 1754 | } |
| 1755 | /* top right pels */ |
| 1756 | if (i4_ngbr_avbl & TOP_RIGHT_MB_AVAILABLE_MASK) |
| 1757 | { |
| 1758 | memcpy(pu1_ngbr_pels_i4+8+1,pu1_mb_c,4); |
| 1759 | } |
| 1760 | else if (i4_ngbr_avbl & TOP_MB_AVAILABLE_MASK) |
| 1761 | { |
| 1762 | memset(pu1_ngbr_pels_i4+8+1,pu1_ngbr_pels_i4[8],4); |
| 1763 | } |
| 1764 | |
| 1765 | /********************************************************/ |
| 1766 | /* prediction */ |
| 1767 | /********************************************************/ |
| 1768 | (ps_codec->apf_intra_pred_4_l)[u1_intra_mode](pu1_ngbr_pels_i4, |
| 1769 | pu1_pred_mb, 0, |
| 1770 | i4_pred_strd, |
| 1771 | i4_ngbr_avbl); |
| 1772 | |
| 1773 | /********************************************************/ |
| 1774 | /* error estimation, */ |
| 1775 | /* transform */ |
| 1776 | /* quantization */ |
| 1777 | /********************************************************/ |
| 1778 | ps_codec->pf_resi_trans_quant_4x4(pu1_curr_mb, pu1_pred_mb, |
| 1779 | pi2_res_mb, i4_src_strd, |
| 1780 | i4_pred_strd, |
| 1781 | ps_qp_params->pu2_scale_mat, |
| 1782 | ps_qp_params->pu2_thres_mat, |
| 1783 | ps_qp_params->u1_qbits, |
| 1784 | ps_qp_params->u4_dead_zone, |
| 1785 | &u1_nnz, &i2_dc_dummy); |
| 1786 | |
| 1787 | /********************************************************/ |
| 1788 | /* pack coeff data for entropy coding */ |
| 1789 | /********************************************************/ |
| 1790 | ps_mb_coeff_data = *pv_mb_coeff_data; |
| 1791 | |
| 1792 | /* write number of non zero coefficients */ |
| 1793 | ps_mb_coeff_data->i4_sig_map_nnz = u1_nnz; |
| 1794 | |
| 1795 | if (u1_nnz) |
| 1796 | { |
| 1797 | for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u1_nnz; coeff_cnt++) |
| 1798 | { |
| 1799 | if (pi2_res_mb[pu1_scan_order[coeff_cnt]]) |
| 1800 | { |
| 1801 | /* write residue */ |
| 1802 | ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb[pu1_scan_order[coeff_cnt]]; |
| 1803 | u4_s_map |= mask; |
| 1804 | } |
| 1805 | mask <<= 1; |
| 1806 | } |
| 1807 | /* write significant coeff map */ |
| 1808 | ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16); |
| 1809 | |
| 1810 | /* update ptr to coeff data */ |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 1811 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1812 | |
| 1813 | /* cbp */ |
| 1814 | u1_cbp_l |= (1 << b8); |
| 1815 | } |
| 1816 | else |
| 1817 | { |
| 1818 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue; |
| 1819 | } |
| 1820 | |
| 1821 | /********************************************************/ |
| 1822 | /* ierror estimation, */ |
| 1823 | /* itransform */ |
| 1824 | /* iquantization */ |
| 1825 | /********************************************************/ |
Martin Storsjo | 17c7e8e | 2015-07-02 12:06:04 +0300 | [diff] [blame] | 1826 | if (u1_nnz) |
| 1827 | ps_codec->pf_iquant_itrans_recon_4x4( |
| 1828 | pi2_res_mb, pu1_pred_mb, pu1_ref_mb, |
| 1829 | /*No input stride,*/i4_pred_strd, |
| 1830 | i4_rec_strd, ps_qp_params->pu2_iscale_mat, |
| 1831 | ps_qp_params->pu2_weigh_mat, |
| 1832 | ps_qp_params->u1_qp_div, |
| 1833 | ps_proc->pv_scratch_buff, 0, 0); |
| 1834 | else |
| 1835 | ps_codec->pf_inter_pred_luma_copy(pu1_pred_mb, pu1_ref_mb, |
| 1836 | i4_pred_strd, i4_rec_strd, |
| 1837 | BLK_SIZE, BLK_SIZE, NULL, |
| 1838 | 0); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1839 | |
| 1840 | } |
| 1841 | |
| 1842 | /* if the 8x8 block has no residue, nothing needs to be sent to entropy */ |
| 1843 | if (!(u1_cbp_l & (1 << b8))) |
| 1844 | { |
| 1845 | *pv_mb_coeff_data = ps_mb_coeff_data_b8; |
| 1846 | } |
| 1847 | } |
| 1848 | |
| 1849 | return (u1_cbp_l); |
| 1850 | } |
| 1851 | |
| 1852 | /** |
| 1853 | ******************************************************************************* |
| 1854 | * |
| 1855 | * @brief performs luma core coding when intra mode is i4x4 |
| 1856 | * |
| 1857 | * @par Description: |
| 1858 | * If the current mb is to be coded as intra of mb type i4x4, the mb is first |
| 1859 | * predicted using one of i4x4 prediction filters, basing on the intra mode |
| 1860 | * chosen. Then, error is computed between the input blk and the estimated blk. |
| 1861 | * This error is dct transformed and quantized. The quantized coefficients are |
| 1862 | * packed in scan order for entropy coding. |
| 1863 | * |
| 1864 | * @param[in] ps_proc_ctxt |
| 1865 | * pointer to the current macro block context |
| 1866 | * |
| 1867 | * @returns u1_cbp_l |
| 1868 | * coded block pattern luma |
| 1869 | * |
| 1870 | * @remarks |
| 1871 | * The traversal of 4x4 subblocks in the 16x16 macroblock is as per the scan order |
| 1872 | * mentioned in h.264 specification |
| 1873 | * |
| 1874 | ******************************************************************************* |
| 1875 | */ |
| 1876 | UWORD8 ih264e_code_luma_intra_macroblock_4x4_rdopt_on(process_ctxt_t *ps_proc) |
| 1877 | { |
| 1878 | /* Codec Context */ |
| 1879 | codec_t *ps_codec = ps_proc->ps_codec; |
| 1880 | |
| 1881 | /* pointer to ref macro block */ |
| 1882 | UWORD8 *pu1_ref_mb_intra_4x4 = ps_proc->pu1_ref_mb_intra_4x4; |
| 1883 | |
| 1884 | /* pointer to recon buffer */ |
| 1885 | UWORD8 *pu1_rec_mb = ps_proc->pu1_rec_buf_luma; |
| 1886 | |
| 1887 | /* pointer to residual macro block */ |
| 1888 | WORD16 *pi2_res_mb = ps_proc->pi2_res_buf_intra_4x4; |
| 1889 | |
| 1890 | /* strides */ |
| 1891 | WORD32 i4_rec_strd = ps_proc->i4_rec_strd; |
| 1892 | |
| 1893 | /* number of non zero coeffs*/ |
| 1894 | UWORD8 *pu1_nnz = (UWORD8 *)ps_proc->au4_nnz_intra_4x4; |
| 1895 | |
| 1896 | /* coded block pattern */ |
| 1897 | UWORD8 u1_cbp_l = 0; |
| 1898 | |
| 1899 | /* pointer to packed mb coeff data */ |
| 1900 | void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data); |
| 1901 | |
| 1902 | /* pointer to packed mb coeff data */ |
| 1903 | tu_sblk_coeff_data_t *ps_mb_coeff_data, *ps_mb_coeff_data_b8; |
| 1904 | |
| 1905 | /* no of non zero coefficients in the current sub block */ |
| 1906 | UWORD32 u4_nnz_cnt; |
| 1907 | |
| 1908 | /* significant coefficient map */ |
| 1909 | UWORD32 u4_s_map; |
| 1910 | |
| 1911 | /* pointer to scanning matrix */ |
| 1912 | const UWORD8 *pu1_scan_order = gu1_luma_scan_order; |
| 1913 | |
| 1914 | /* temp var */ |
| 1915 | UWORD32 b8, b4, coeff_cnt, mask; |
| 1916 | |
| 1917 | /* Process 16 4x4 lum sub-blocks of the MB in scan order */ |
| 1918 | for (b8 = 0; b8 < 4; b8++) |
| 1919 | { |
| 1920 | /* if in case cbp for the 8x8 block is zero, send no residue */ |
| 1921 | ps_mb_coeff_data_b8 = *pv_mb_coeff_data; |
| 1922 | |
| 1923 | for (b4 = 0; b4 < 4; b4++, pu1_nnz++, pi2_res_mb += MB_SIZE) |
| 1924 | { |
| 1925 | /********************************************************/ |
| 1926 | /* pack coeff data for entropy coding */ |
| 1927 | /********************************************************/ |
| 1928 | ps_mb_coeff_data = *pv_mb_coeff_data; |
| 1929 | |
| 1930 | /* write number of non zero coefficients */ |
| 1931 | ps_mb_coeff_data->i4_sig_map_nnz = *pu1_nnz; |
| 1932 | |
| 1933 | if (*pu1_nnz) |
| 1934 | { |
| 1935 | for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < *pu1_nnz; coeff_cnt++) |
| 1936 | { |
| 1937 | if (pi2_res_mb[pu1_scan_order[coeff_cnt]]) |
| 1938 | { |
| 1939 | /* write residue */ |
| 1940 | ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb[pu1_scan_order[coeff_cnt]]; |
| 1941 | u4_s_map |= mask; |
| 1942 | } |
| 1943 | mask <<= 1; |
| 1944 | } |
| 1945 | /* write significant coeff map */ |
| 1946 | ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16); |
| 1947 | |
| 1948 | /* update ptr to coeff data */ |
Harish Mahendrakar | c72323e | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 1949 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1950 | |
| 1951 | /* cbp */ |
| 1952 | u1_cbp_l |= (1 << b8); |
| 1953 | } |
| 1954 | else |
| 1955 | { |
| 1956 | (*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue; |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | /* if the 8x8 block has no residue, nothing needs to be sent to entropy */ |
| 1961 | if (!(u1_cbp_l & (1 << b8))) |
| 1962 | { |
| 1963 | *pv_mb_coeff_data = ps_mb_coeff_data_b8; |
| 1964 | } |
| 1965 | } |
| 1966 | |
| 1967 | /* memcpy recon */ |
| 1968 | ps_codec->pf_inter_pred_luma_copy(pu1_ref_mb_intra_4x4, pu1_rec_mb, MB_SIZE, i4_rec_strd, MB_SIZE, MB_SIZE, NULL, 0); |
| 1969 | |
| 1970 | return (u1_cbp_l); |
| 1971 | } |
| 1972 | |
| 1973 | |
| 1974 | /** |
| 1975 | ******************************************************************************* |
| 1976 | * |
| 1977 | * @brief performs chroma core coding for intra macro blocks |
| 1978 | * |
| 1979 | * @par Description: |
| 1980 | * If the current MB is to be intra coded with mb type chroma I8x8, the MB is |
| 1981 | * first predicted using intra 8x8 prediction filters. The predicted data is |
| 1982 | * compared with the input for error and the error is transformed. The DC |
| 1983 | * coefficients of each transformed sub blocks are further transformed using |
| 1984 | * Hadamard transform. The resulting coefficients are quantized, packed and sent |
| 1985 | * for entropy coding. |
| 1986 | * |
| 1987 | * @param[in] ps_proc_ctxt |
| 1988 | * pointer to the current macro block context |
| 1989 | * |
| 1990 | * @returns u1_cbp_c |
| 1991 | * coded block pattern chroma |
| 1992 | * |
| 1993 | * @remarks |
| 1994 | * The traversal of 4x4 subblocks in the 8x8 macroblock is as per the scan order |
| 1995 | * mentioned in h.264 specification |
| 1996 | * |
| 1997 | ******************************************************************************* |
| 1998 | */ |
| 1999 | UWORD8 ih264e_code_chroma_intra_macroblock_8x8(process_ctxt_t *ps_proc) |
| 2000 | { |
| 2001 | /* Codec Context */ |
| 2002 | codec_t *ps_codec = ps_proc->ps_codec; |
| 2003 | |
| 2004 | /* pointer to ref macro block */ |
| 2005 | UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_chroma; |
| 2006 | |
| 2007 | /* pointer to src macro block */ |
| 2008 | UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_chroma; |
| 2009 | |
| 2010 | /* pointer to prediction macro block */ |
| 2011 | UWORD8 *pu1_pred_mb = NULL; |
| 2012 | |
| 2013 | /* pointer to residual macro block */ |
| 2014 | WORD16 *pi2_res_mb = ps_proc->pi2_res_buf; |
| 2015 | |
| 2016 | /* strides */ |
Martin Storsjo | 53c6878 | 2015-06-09 16:25:51 +0300 | [diff] [blame] | 2017 | WORD32 i4_src_strd = ps_proc->i4_src_chroma_strd; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 2018 | WORD32 i4_rec_strd = ps_proc->i4_rec_strd; |
| 2019 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 2020 | WORD32 i4_res_strd = ps_proc->i4_res_strd; |
| 2021 | |
| 2022 | /* intra mode */ |
| 2023 | UWORD8 u1_intra_mode = ps_proc->u1_c_i8_mode; |
| 2024 | |
| 2025 | /* coded block pattern */ |
| 2026 | UWORD8 u1_cbp_c = 0; |
| 2027 | |
| 2028 | /* number of non zero coeffs*/ |
| 2029 | UWORD8 au1_nnz[18] = {0}; |
| 2030 | |
| 2031 | /* quantization parameters */ |
| 2032 | quant_params_t *ps_qp_params = ps_proc->ps_qp_params[1]; |
| 2033 | |
| 2034 | /* Control signal for inverse transform */ |
| 2035 | UWORD32 u4_cntrl; |
| 2036 | |
| 2037 | /* pointer to packed mb coeff data */ |
| 2038 | void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data); |
| 2039 | |
| 2040 | /* See if we need to swap U and V plances for entropy */ |
| 2041 | UWORD32 u4_swap_uv = ps_codec->s_cfg.e_inp_color_fmt == IV_YUV_420SP_VU; |
| 2042 | |
| 2043 | if (PLANE_CH_I8x8 == u1_intra_mode) |
| 2044 | { |
| 2045 | pu1_pred_mb = ps_proc->pu1_pred_mb_intra_chroma_plane; |
| 2046 | } |
| 2047 | else |
| 2048 | { |
| 2049 | pu1_pred_mb = ps_proc->pu1_pred_mb_intra_chroma; |
| 2050 | } |
| 2051 | |
| 2052 | /********************************************************/ |
| 2053 | /* error estimation, */ |
| 2054 | /* transform */ |
| 2055 | /* quantization */ |
| 2056 | /********************************************************/ |
| 2057 | ih264e_chroma_8x8_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb, |
| 2058 | pu1_pred_mb, pi2_res_mb, |
| 2059 | i4_src_strd, i4_pred_strd, |
| 2060 | i4_res_strd, |
| 2061 | ps_qp_params->pu2_scale_mat, |
| 2062 | ps_qp_params->pu2_thres_mat, |
| 2063 | ps_qp_params->u1_qbits, |
| 2064 | ps_qp_params->u4_dead_zone, |
| 2065 | au1_nnz); |
| 2066 | |
| 2067 | /********************************************************/ |
| 2068 | /* pack coeff data for entropy coding */ |
| 2069 | /********************************************************/ |
| 2070 | ih264e_pack_c_mb(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_c, |
| 2071 | au1_nnz, ps_codec->u4_thres_resi, &u4_cntrl, u4_swap_uv); |
| 2072 | |
| 2073 | /********************************************************/ |
| 2074 | /* ierror estimation, */ |
| 2075 | /* itransform */ |
| 2076 | /* iquantization */ |
| 2077 | /********************************************************/ |
| 2078 | ih264e_chroma_8x8_idctrans_iquant_itrans_recon(ps_codec, pi2_res_mb, |
| 2079 | pu1_pred_mb, pu1_ref_mb, |
| 2080 | i4_res_strd, i4_pred_strd, |
| 2081 | i4_rec_strd, |
| 2082 | ps_qp_params->pu2_iscale_mat, |
| 2083 | ps_qp_params->pu2_weigh_mat, |
| 2084 | ps_qp_params->u1_qp_div, |
| 2085 | u4_cntrl, |
| 2086 | ps_proc->pv_scratch_buff); |
| 2087 | return (u1_cbp_c); |
| 2088 | } |
| 2089 | |
| 2090 | |
| 2091 | /** |
| 2092 | ******************************************************************************* |
| 2093 | * |
| 2094 | * @brief performs luma core coding when mode is inter |
| 2095 | * |
| 2096 | * @par Description: |
| 2097 | * If the current mb is to be coded as inter the mb is predicted based on the |
| 2098 | * sub mb partitions and corresponding motion vectors generated by ME. Then, |
| 2099 | * error is computed between the input blk and the estimated blk. This error is |
| 2100 | * transformed, quantized. The quantized coefficients are packed in scan order |
| 2101 | * for entropy coding |
| 2102 | * |
| 2103 | * @param[in] ps_proc_ctxt |
| 2104 | * pointer to the current macro block context |
| 2105 | * |
| 2106 | * @returns u1_cbp_l |
| 2107 | * coded block pattern luma |
| 2108 | * |
| 2109 | * @remarks none |
| 2110 | * |
| 2111 | ******************************************************************************* |
| 2112 | */ |
| 2113 | |
| 2114 | UWORD8 ih264e_code_luma_inter_macroblock_16x16(process_ctxt_t *ps_proc) |
| 2115 | { |
| 2116 | /* Codec Context */ |
| 2117 | codec_t *ps_codec = ps_proc->ps_codec; |
| 2118 | |
| 2119 | /* pointer to ref macro block */ |
| 2120 | UWORD8 *pu1_rec_mb = ps_proc->pu1_rec_buf_luma; |
| 2121 | |
| 2122 | /* pointer to src macro block */ |
| 2123 | UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_luma; |
| 2124 | |
| 2125 | /* pointer to prediction macro block */ |
| 2126 | UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb; |
| 2127 | |
| 2128 | /* pointer to residual macro block */ |
| 2129 | WORD16 *pi2_res_mb = ps_proc->pi2_res_buf; |
| 2130 | |
| 2131 | /* strides */ |
| 2132 | WORD32 i4_src_strd = ps_proc->i4_src_strd; |
| 2133 | WORD32 i4_rec_strd = ps_proc->i4_rec_strd; |
| 2134 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 2135 | WORD32 i4_res_strd = ps_proc->i4_res_strd; |
| 2136 | |
| 2137 | /* coded block pattern */ |
| 2138 | UWORD8 u1_cbp_l = 0; |
| 2139 | |
| 2140 | /*Control signal of itrans*/ |
| 2141 | UWORD32 u4_cntrl; |
| 2142 | |
| 2143 | /* number of non zero coeffs*/ |
| 2144 | UWORD8 *pu1_nnz = (UWORD8 *)ps_proc->au4_nnz; |
| 2145 | |
| 2146 | /* quantization parameters */ |
| 2147 | quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0]; |
| 2148 | |
| 2149 | /* pointer to packed mb coeff data */ |
| 2150 | void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data); |
| 2151 | |
| 2152 | /* pseudo pred buffer */ |
| 2153 | UWORD8 *pu1_pseudo_pred = pu1_pred_mb; |
| 2154 | |
| 2155 | /* pseudo pred buffer stride */ |
| 2156 | WORD32 i4_pseudo_pred_strd = i4_pred_strd; |
| 2157 | |
| 2158 | /* init nnz */ |
| 2159 | ps_proc->au4_nnz[0] = 0; |
| 2160 | ps_proc->au4_nnz[1] = 0; |
| 2161 | ps_proc->au4_nnz[2] = 0; |
| 2162 | ps_proc->au4_nnz[3] = 0; |
| 2163 | ps_proc->au4_nnz[4] = 0; |
| 2164 | |
| 2165 | /********************************************************/ |
| 2166 | /* prediction */ |
| 2167 | /********************************************************/ |
| 2168 | ih264e_motion_comp_luma(ps_proc, &pu1_pseudo_pred, &i4_pseudo_pred_strd); |
| 2169 | |
| 2170 | /********************************************************/ |
| 2171 | /* error estimation, */ |
| 2172 | /* transform */ |
| 2173 | /* quantization */ |
| 2174 | /********************************************************/ |
| 2175 | if (ps_proc->u4_min_sad_reached == 0 || ps_proc->u4_min_sad != 0) |
| 2176 | { |
| 2177 | ih264e_luma_16x16_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb, |
| 2178 | pu1_pseudo_pred, pi2_res_mb, |
| 2179 | i4_src_strd, |
| 2180 | i4_pseudo_pred_strd, |
| 2181 | i4_res_strd, |
| 2182 | ps_qp_params->pu2_scale_mat, |
| 2183 | ps_qp_params->pu2_thres_mat, |
| 2184 | ps_qp_params->u1_qbits, |
| 2185 | ps_qp_params->u4_dead_zone, |
| 2186 | pu1_nnz, |
| 2187 | DISABLE_DC_TRANSFORM); |
| 2188 | |
| 2189 | /********************************************************/ |
| 2190 | /* pack coeff data for entropy coding */ |
| 2191 | /********************************************************/ |
| 2192 | ih264e_pack_l_mb(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_l, |
| 2193 | pu1_nnz, ps_codec->u4_thres_resi, &u4_cntrl); |
| 2194 | } |
| 2195 | else |
| 2196 | { |
| 2197 | u1_cbp_l = 0; |
| 2198 | u4_cntrl = 0; |
| 2199 | } |
| 2200 | |
| 2201 | /********************************************************/ |
| 2202 | /* ierror estimation, */ |
| 2203 | /* itransform */ |
| 2204 | /* iquantization */ |
| 2205 | /********************************************************/ |
| 2206 | |
| 2207 | /*If the frame is not to be used for P frame reference or dumping recon |
| 2208 | * we only will use the reocn for only predicting intra Mbs |
| 2209 | * THis will need only right and bottom edge 4x4 blocks recon |
| 2210 | * Hence we selectively enable them using control signal(including DC) |
| 2211 | */ |
| 2212 | if (ps_proc->u4_compute_recon != 1) |
| 2213 | { |
| 2214 | u4_cntrl &= 0x111F0000; |
| 2215 | } |
| 2216 | |
| 2217 | if (u4_cntrl) |
| 2218 | { |
| 2219 | ih264e_luma_16x16_idctrans_iquant_itrans_recon( |
| 2220 | ps_codec, pi2_res_mb, pu1_pseudo_pred, pu1_rec_mb, |
| 2221 | i4_res_strd, i4_pseudo_pred_strd, i4_rec_strd, |
| 2222 | ps_qp_params->pu2_iscale_mat, |
| 2223 | ps_qp_params->pu2_weigh_mat, ps_qp_params->u1_qp_div, |
| 2224 | u4_cntrl /*Cntrl*/, DISABLE_DC_TRANSFORM, |
| 2225 | ps_proc->pv_scratch_buff); |
| 2226 | } |
| 2227 | else |
| 2228 | { |
| 2229 | ps_codec->pf_inter_pred_luma_copy(pu1_pseudo_pred, pu1_rec_mb, |
| 2230 | i4_pseudo_pred_strd, i4_rec_strd, |
| 2231 | MB_SIZE, MB_SIZE, NULL, 0); |
| 2232 | } |
| 2233 | |
| 2234 | |
| 2235 | return (u1_cbp_l); |
| 2236 | } |
| 2237 | |
| 2238 | /** |
| 2239 | ******************************************************************************* |
| 2240 | * |
| 2241 | * @brief performs chroma core coding for inter macro blocks |
| 2242 | * |
| 2243 | * @par Description: |
| 2244 | * If the current mb is to be coded as inter predicted mb,based on the sub mb partitions |
| 2245 | * and corresponding motion vectors generated by ME ,prediction is done. |
| 2246 | * Then, error is computed between the input blk and the estimated blk. |
| 2247 | * This error is transformed , quantized. The quantized coefficients |
| 2248 | * are packed in scan order for |
| 2249 | * entropy coding. |
| 2250 | * |
| 2251 | * @param[in] ps_proc_ctxt |
| 2252 | * pointer to the current macro block context |
| 2253 | * |
| 2254 | * @returns u1_cbp_l |
| 2255 | * coded block pattern chroma |
| 2256 | * |
| 2257 | * @remarks none |
| 2258 | * |
| 2259 | ******************************************************************************* |
| 2260 | */ |
| 2261 | UWORD8 ih264e_code_chroma_inter_macroblock_8x8(process_ctxt_t *ps_proc) |
| 2262 | { |
| 2263 | /* Codec Context */ |
| 2264 | codec_t *ps_codec = ps_proc->ps_codec; |
| 2265 | |
| 2266 | /* pointer to ref macro block */ |
| 2267 | UWORD8 *pu1_rec_mb = ps_proc->pu1_rec_buf_chroma; |
| 2268 | |
| 2269 | /* pointer to src macro block */ |
| 2270 | UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_chroma; |
| 2271 | |
| 2272 | /* pointer to prediction macro block */ |
| 2273 | UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb; |
| 2274 | |
| 2275 | /* pointer to residual macro block */ |
| 2276 | WORD16 *pi2_res_mb = ps_proc->pi2_res_buf; |
| 2277 | |
| 2278 | /* strides */ |
Martin Storsjo | 53c6878 | 2015-06-09 16:25:51 +0300 | [diff] [blame] | 2279 | WORD32 i4_src_strd = ps_proc->i4_src_chroma_strd; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 2280 | WORD32 i4_rec_strd = ps_proc->i4_rec_strd; |
| 2281 | WORD32 i4_pred_strd = ps_proc->i4_pred_strd; |
| 2282 | WORD32 i4_res_strd = ps_proc->i4_res_strd; |
| 2283 | |
| 2284 | /* coded block pattern */ |
| 2285 | UWORD8 u1_cbp_c = 0; |
| 2286 | |
| 2287 | /*Control signal for inverse transform*/ |
| 2288 | UWORD32 u4_cntrl; |
| 2289 | |
| 2290 | /* number of non zero coeffs*/ |
| 2291 | UWORD8 au1_nnz[10] = {0}; |
| 2292 | |
| 2293 | /* quantization parameters */ |
| 2294 | quant_params_t *ps_qp_params = ps_proc->ps_qp_params[1]; |
| 2295 | |
| 2296 | /* pointer to packed mb coeff data */ |
| 2297 | void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data); |
| 2298 | |
| 2299 | /*See if we need to swap U and V plances for entropy*/ |
| 2300 | UWORD32 u4_swap_uv = ps_codec->s_cfg.e_inp_color_fmt == IV_YUV_420SP_VU; |
| 2301 | |
| 2302 | /********************************************************/ |
| 2303 | /* prediction */ |
| 2304 | /********************************************************/ |
| 2305 | ih264e_motion_comp_chroma(ps_proc); |
| 2306 | |
| 2307 | /********************************************************/ |
| 2308 | /* error estimation, */ |
| 2309 | /* transform */ |
| 2310 | /* quantization */ |
| 2311 | /********************************************************/ |
| 2312 | ih264e_chroma_8x8_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb, |
| 2313 | pu1_pred_mb, pi2_res_mb, |
| 2314 | i4_src_strd, i4_pred_strd, |
| 2315 | i4_res_strd, |
| 2316 | ps_qp_params->pu2_scale_mat, |
| 2317 | ps_qp_params->pu2_thres_mat, |
| 2318 | ps_qp_params->u1_qbits, |
| 2319 | ps_qp_params->u4_dead_zone, |
| 2320 | au1_nnz); |
| 2321 | |
| 2322 | /********************************************************/ |
| 2323 | /* pack coeff data for entropy coding */ |
| 2324 | /********************************************************/ |
| 2325 | ih264e_pack_c_mb(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_c, |
| 2326 | au1_nnz, ps_codec->u4_thres_resi, &u4_cntrl, u4_swap_uv); |
| 2327 | |
| 2328 | /********************************************************/ |
| 2329 | /* ierror estimation, */ |
| 2330 | /* itransform */ |
| 2331 | /* iquantization */ |
| 2332 | /********************************************************/ |
| 2333 | |
| 2334 | /* If the frame is not to be used for P frame reference or dumping recon |
| 2335 | * we only will use the reocn for only predicting intra Mbs |
| 2336 | * THis will need only right and bottom edge 4x4 blocks recon |
| 2337 | * Hence we selectively enable them using control signal(including DC) |
| 2338 | */ |
| 2339 | if (!ps_proc->u4_compute_recon) |
| 2340 | { |
| 2341 | u4_cntrl &= 0x7700C000; |
| 2342 | } |
| 2343 | |
| 2344 | if (u4_cntrl) |
| 2345 | { |
| 2346 | ih264e_chroma_8x8_idctrans_iquant_itrans_recon( |
| 2347 | ps_codec, pi2_res_mb, pu1_pred_mb, pu1_rec_mb, |
| 2348 | i4_res_strd, i4_pred_strd, i4_rec_strd, |
| 2349 | ps_qp_params->pu2_iscale_mat, |
| 2350 | ps_qp_params->pu2_weigh_mat, ps_qp_params->u1_qp_div, |
| 2351 | u4_cntrl, ps_proc->pv_scratch_buff); |
| 2352 | } |
| 2353 | else |
| 2354 | { |
| 2355 | ps_codec->pf_inter_pred_luma_copy(pu1_pred_mb, pu1_rec_mb, i4_pred_strd, |
| 2356 | i4_rec_strd, MB_SIZE >> 1, MB_SIZE, |
| 2357 | NULL, 0); |
| 2358 | } |
| 2359 | |
| 2360 | return (u1_cbp_c); |
| 2361 | } |