Harish Mahendrakar | 0d8951c | 2014-05-16 10:31:13 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore |
| 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 | /** |
| 19 | ******************************************************************************* |
| 20 | * @file |
| 21 | * ihevc_iquant_recon.c |
| 22 | * |
| 23 | * @brief |
| 24 | * Contains function definitions for inverse quantization and |
| 25 | * reconstruction |
| 26 | * |
| 27 | * @author |
| 28 | * 100470 |
| 29 | * |
| 30 | * @par List of Functions: |
| 31 | * - ihevc_iquant_recon_4x4_ttype1() |
| 32 | * - ihevc_iquant_recon_4x4() |
| 33 | * - ihevc_iquant_recon_8x8() |
| 34 | * - ihevc_iquant_recon_16x16() |
| 35 | * - ihevc_iquant_recon_32x32() |
| 36 | * |
| 37 | * @remarks |
| 38 | * None |
| 39 | * |
| 40 | ******************************************************************************* |
| 41 | */ |
| 42 | #include <stdio.h> |
| 43 | #include <string.h> |
| 44 | #include "ihevc_typedefs.h" |
| 45 | #include "ihevc_macros.h" |
| 46 | #include "ihevc_platform_macros.h" |
| 47 | #include "ihevc_defs.h" |
| 48 | #include "ihevc_trans_tables.h" |
| 49 | #include "ihevc_iquant_recon.h" |
| 50 | #include "ihevc_func_selector.h" |
| 51 | #include "ihevc_trans_macros.h" |
| 52 | |
| 53 | /* All the functions here are replicated from ihevc_iquant_itrans_recon.c and modified to */ |
| 54 | /* include reconstruction */ |
| 55 | |
| 56 | /** |
| 57 | ******************************************************************************* |
| 58 | * |
| 59 | * @brief |
| 60 | * This function performs inverse quantization type 1 and reconstruction |
| 61 | * for 4x4 input block |
| 62 | * |
| 63 | * @par Description: |
| 64 | * This function performs inverse quantization and reconstruction for 4x4 |
| 65 | * input block |
| 66 | * |
| 67 | * @param[in] pi2_src |
| 68 | * Input 4x4 coefficients |
| 69 | * |
| 70 | * @param[in] pu1_pred |
| 71 | * Prediction 4x4 block |
| 72 | * |
| 73 | * @param[in] pi2_dequant_coeff |
| 74 | * Dequant Coeffs |
| 75 | * |
| 76 | * @param[out] pu1_dst |
| 77 | * Output 4x4 block |
| 78 | * |
| 79 | * @param[in] qp_div |
| 80 | * Quantization parameter / 6 |
| 81 | * |
| 82 | * @param[in] qp_rem |
| 83 | * Quantization parameter % 6 |
| 84 | * |
| 85 | * @param[in] src_strd |
| 86 | * Input stride |
| 87 | * |
| 88 | * @param[in] pred_strd |
| 89 | * Prediction stride |
| 90 | * |
| 91 | * @param[in] dst_strd |
| 92 | * Output Stride |
| 93 | * |
| 94 | * @param[in] zero_cols |
| 95 | * Zero columns in pi2_src |
| 96 | * |
| 97 | * @returns Void |
| 98 | * |
| 99 | * @remarks |
| 100 | * None |
| 101 | * |
| 102 | ******************************************************************************* |
| 103 | */ |
| 104 | |
| 105 | void ihevc_iquant_recon_4x4_ttype1(WORD16 *pi2_src, |
| 106 | UWORD8 *pu1_pred, |
| 107 | WORD16 *pi2_dequant_coeff, |
| 108 | UWORD8 *pu1_dst, |
| 109 | WORD32 qp_div, /* qpscaled / 6 */ |
| 110 | WORD32 qp_rem, /* qpscaled % 6 */ |
| 111 | WORD32 src_strd, |
| 112 | WORD32 pred_strd, |
| 113 | WORD32 dst_strd, |
| 114 | WORD32 zero_cols) |
| 115 | { |
| 116 | |
| 117 | { |
| 118 | /* Inverse Quant and recon */ |
| 119 | { |
| 120 | WORD32 i, j; |
| 121 | WORD32 shift_iq; |
| 122 | WORD32 trans_size; |
| 123 | /* Inverse Quantization constants */ |
| 124 | { |
| 125 | WORD32 log2_trans_size, bit_depth; |
| 126 | |
| 127 | log2_trans_size = 2; |
| 128 | bit_depth = 8 + 0; |
| 129 | shift_iq = bit_depth + log2_trans_size - 5; |
| 130 | } |
| 131 | |
| 132 | trans_size = TRANS_SIZE_4; |
| 133 | |
| 134 | for(i = 0; i < trans_size; i++) |
| 135 | { |
| 136 | /* Checking for Zero Cols */ |
| 137 | if((zero_cols & 1) == 1) |
| 138 | { |
| 139 | for(j = 0; j < trans_size; j++) |
| 140 | pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd]; |
| 141 | } |
| 142 | else |
| 143 | { |
| 144 | for(j = 0; j < trans_size; j++) |
| 145 | { |
| 146 | WORD32 iquant_out; |
| 147 | IQUANT_4x4(iquant_out, |
| 148 | pi2_src[j * src_strd], |
| 149 | pi2_dequant_coeff[j * trans_size] * g_ihevc_iquant_scales[qp_rem], |
| 150 | shift_iq, qp_div); |
| 151 | |
| 152 | iquant_out = (iquant_out + 16) >> 5; |
| 153 | pu1_dst[j * dst_strd] = |
| 154 | CLIP_U8(iquant_out + pu1_pred[j * pred_strd]); |
| 155 | } |
| 156 | } |
| 157 | pi2_src++; |
| 158 | pi2_dequant_coeff++; |
| 159 | pu1_pred++; |
| 160 | pu1_dst++; |
| 161 | |
| 162 | zero_cols = zero_cols >> 1; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | ******************************************************************************* |
| 170 | * |
| 171 | * @brief |
| 172 | * This function performs inverse quantization and reconstruction for 4x4 |
| 173 | * input block |
| 174 | * |
| 175 | * @par Description: |
| 176 | * This function performs inverse quantization and reconstruction for 4x4 |
| 177 | * input block |
| 178 | * |
| 179 | * @param[in] pi2_src |
| 180 | * Input 4x4 coefficients |
| 181 | * |
| 182 | * @param[in] pu1_pred |
| 183 | * Prediction 4x4 block |
| 184 | * |
| 185 | * @param[in] pi2_dequant_coeff |
| 186 | * Dequant Coeffs |
| 187 | * |
| 188 | * @param[out] pu1_dst |
| 189 | * Output 4x4 block |
| 190 | * |
| 191 | * @param[in] qp_div |
| 192 | * Quantization parameter / 6 |
| 193 | * |
| 194 | * @param[in] qp_rem |
| 195 | * Quantization parameter % 6 |
| 196 | * |
| 197 | * @param[in] src_strd |
| 198 | * Input stride |
| 199 | * |
| 200 | * @param[in] pred_strd |
| 201 | * Prediction stride |
| 202 | * |
| 203 | * @param[in] dst_strd |
| 204 | * Output Stride |
| 205 | * |
| 206 | * @param[in] zero_cols |
| 207 | * Zero columns in pi2_src |
| 208 | * |
| 209 | * @returns Void |
| 210 | * |
| 211 | * @remarks |
| 212 | * None |
| 213 | * |
| 214 | ******************************************************************************* |
| 215 | */ |
| 216 | |
| 217 | void ihevc_iquant_recon_4x4(WORD16 *pi2_src, |
| 218 | UWORD8 *pu1_pred, |
| 219 | WORD16 *pi2_dequant_coeff, |
| 220 | UWORD8 *pu1_dst, |
| 221 | WORD32 qp_div, /* qpscaled / 6 */ |
| 222 | WORD32 qp_rem, /* qpscaled % 6 */ |
| 223 | WORD32 src_strd, |
| 224 | WORD32 pred_strd, |
| 225 | WORD32 dst_strd, |
| 226 | WORD32 zero_cols) |
| 227 | { |
| 228 | |
| 229 | { |
| 230 | /* Inverse Quant and recon */ |
| 231 | { |
| 232 | WORD32 i, j; |
| 233 | WORD32 shift_iq; |
| 234 | WORD32 trans_size; |
| 235 | /* Inverse Quantization constants */ |
| 236 | { |
| 237 | WORD32 log2_trans_size, bit_depth; |
| 238 | |
| 239 | log2_trans_size = 2; |
| 240 | bit_depth = 8 + 0; |
| 241 | shift_iq = bit_depth + log2_trans_size - 5; |
| 242 | } |
| 243 | |
| 244 | trans_size = TRANS_SIZE_4; |
| 245 | |
| 246 | for(i = 0; i < trans_size; i++) |
| 247 | { |
| 248 | /* Checking for Zero Cols */ |
| 249 | if((zero_cols & 1) == 1) |
| 250 | { |
| 251 | for(j = 0; j < trans_size; j++) |
| 252 | pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd]; |
| 253 | } |
| 254 | else |
| 255 | { |
| 256 | for(j = 0; j < trans_size; j++) |
| 257 | { |
| 258 | WORD32 iquant_out; |
| 259 | IQUANT_4x4(iquant_out, |
| 260 | pi2_src[j * src_strd], |
| 261 | pi2_dequant_coeff[j * trans_size] * g_ihevc_iquant_scales[qp_rem], |
| 262 | shift_iq, qp_div); |
| 263 | iquant_out = (iquant_out + 16) >> 5; |
| 264 | pu1_dst[j * dst_strd] = |
| 265 | CLIP_U8(iquant_out + pu1_pred[j * pred_strd]); |
| 266 | } |
| 267 | } |
| 268 | pi2_src++; |
| 269 | pi2_dequant_coeff++; |
| 270 | pu1_pred++; |
| 271 | pu1_dst++; |
| 272 | |
| 273 | zero_cols = zero_cols >> 1; |
| 274 | } |
| 275 | } |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | ******************************************************************************* |
| 281 | * |
| 282 | * @brief |
| 283 | * This function performs inverse quantization and reconstruction for 8x8 |
| 284 | * input block |
| 285 | * |
| 286 | * @par Description: |
| 287 | * This function performs inverse quantization and reconstruction for 8x8 |
| 288 | * input block |
| 289 | * |
| 290 | * @param[in] pi2_src |
| 291 | * Input 8x8 coefficients |
| 292 | * |
| 293 | * @param[in] pu1_pred |
| 294 | * Prediction 8x8 block |
| 295 | * |
| 296 | * @param[in] pi2_dequant_coeff |
| 297 | * Dequant Coeffs |
| 298 | * |
| 299 | * @param[out] pu1_dst |
| 300 | * Output 8x8 block |
| 301 | * |
| 302 | * @param[in] qp_div |
| 303 | * Quantization parameter / 6 |
| 304 | * |
| 305 | * @param[in] qp_rem |
| 306 | * Quantization parameter % 6 |
| 307 | * |
| 308 | * @param[in] src_strd |
| 309 | * Input stride |
| 310 | * |
| 311 | * @param[in] pred_strd |
| 312 | * Prediction stride |
| 313 | * |
| 314 | * @param[in] dst_strd |
| 315 | * Output Stride |
| 316 | * |
| 317 | * @param[in] zero_cols |
| 318 | * Zero columns in pi2_src |
| 319 | * |
| 320 | * @returns Void |
| 321 | * |
| 322 | * @remarks |
| 323 | * None |
| 324 | * |
| 325 | ******************************************************************************* |
| 326 | */ |
| 327 | |
| 328 | void ihevc_iquant_recon_8x8(WORD16 *pi2_src, |
| 329 | UWORD8 *pu1_pred, |
| 330 | WORD16 *pi2_dequant_coeff, |
| 331 | UWORD8 *pu1_dst, |
| 332 | WORD32 qp_div, /* qpscaled / 6 */ |
| 333 | WORD32 qp_rem, /* qpscaled % 6 */ |
| 334 | WORD32 src_strd, |
| 335 | WORD32 pred_strd, |
| 336 | WORD32 dst_strd, |
| 337 | WORD32 zero_cols) |
| 338 | { |
| 339 | |
| 340 | { |
| 341 | /* Inverse Quant and recon */ |
| 342 | { |
| 343 | WORD32 i, j; |
| 344 | WORD32 shift_iq; |
| 345 | WORD32 trans_size; |
| 346 | /* Inverse Quantization constants */ |
| 347 | { |
| 348 | WORD32 log2_trans_size, bit_depth; |
| 349 | |
| 350 | log2_trans_size = 3; |
| 351 | bit_depth = 8 + 0; |
| 352 | shift_iq = bit_depth + log2_trans_size - 5; |
| 353 | } |
| 354 | |
| 355 | trans_size = TRANS_SIZE_8; |
| 356 | |
| 357 | for(i = 0; i < trans_size; i++) |
| 358 | { |
| 359 | /* Checking for Zero Cols */ |
| 360 | if((zero_cols & 1) == 1) |
| 361 | { |
| 362 | for(j = 0; j < trans_size; j++) |
| 363 | pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd]; |
| 364 | } |
| 365 | else |
| 366 | { |
| 367 | for(j = 0; j < trans_size; j++) |
| 368 | { |
| 369 | WORD32 iquant_out; |
| 370 | IQUANT(iquant_out, |
| 371 | pi2_src[j * src_strd], |
| 372 | pi2_dequant_coeff[j * trans_size] * g_ihevc_iquant_scales[qp_rem], |
| 373 | shift_iq, qp_div); |
| 374 | iquant_out = (iquant_out + 16) >> 5; |
| 375 | pu1_dst[j * dst_strd] = |
| 376 | CLIP_U8(iquant_out + pu1_pred[j * pred_strd]); |
| 377 | } |
| 378 | } |
| 379 | pi2_src++; |
| 380 | pi2_dequant_coeff++; |
| 381 | pu1_pred++; |
| 382 | pu1_dst++; |
| 383 | |
| 384 | zero_cols = zero_cols >> 1; |
| 385 | } |
| 386 | } |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | /** |
| 391 | ******************************************************************************* |
| 392 | * |
| 393 | * @brief |
| 394 | * This function performs inverse quantization and reconstruction for 16x16 |
| 395 | * input block |
| 396 | * |
| 397 | * @par Description: |
| 398 | * This function performs inverse quantization and reconstruction for 16x16 |
| 399 | * input block |
| 400 | * |
| 401 | * @param[in] pi2_src |
| 402 | * Input 16x16 coefficients |
| 403 | * |
| 404 | * @param[in] pu1_pred |
| 405 | * Prediction 16x16 block |
| 406 | * |
| 407 | * @param[in] pi2_dequant_coeff |
| 408 | * Dequant Coeffs |
| 409 | * |
| 410 | * @param[out] pu1_dst |
| 411 | * Output 16x16 block |
| 412 | * |
| 413 | * @param[in] qp_div |
| 414 | * Quantization parameter / 6 |
| 415 | * |
| 416 | * @param[in] qp_rem |
| 417 | * Quantization parameter % 6 |
| 418 | * |
| 419 | * @param[in] src_strd |
| 420 | * Input stride |
| 421 | * |
| 422 | * @param[in] pred_strd |
| 423 | * Prediction stride |
| 424 | * |
| 425 | * @param[in] dst_strd |
| 426 | * Output Stride |
| 427 | * |
| 428 | * @param[in] zero_cols |
| 429 | * Zero columns in pi2_src |
| 430 | * |
| 431 | * @returns Void |
| 432 | * |
| 433 | * @remarks |
| 434 | * None |
| 435 | * |
| 436 | ******************************************************************************* |
| 437 | */ |
| 438 | |
| 439 | void ihevc_iquant_recon_16x16(WORD16 *pi2_src, |
| 440 | UWORD8 *pu1_pred, |
| 441 | WORD16 *pi2_dequant_coeff, |
| 442 | UWORD8 *pu1_dst, |
| 443 | WORD32 qp_div, /* qpscaled / 6 */ |
| 444 | WORD32 qp_rem, /* qpscaled % 6 */ |
| 445 | WORD32 src_strd, |
| 446 | WORD32 pred_strd, |
| 447 | WORD32 dst_strd, |
| 448 | WORD32 zero_cols) |
| 449 | |
| 450 | { |
| 451 | |
| 452 | { |
| 453 | /* Inverse Quant and recon */ |
| 454 | { |
| 455 | WORD32 i, j; |
| 456 | WORD32 shift_iq; |
| 457 | WORD32 trans_size; |
| 458 | /* Inverse Quantization constants */ |
| 459 | { |
| 460 | WORD32 log2_trans_size, bit_depth; |
| 461 | |
| 462 | log2_trans_size = 4; |
| 463 | bit_depth = 8 + 0; |
| 464 | shift_iq = bit_depth + log2_trans_size - 5; |
| 465 | } |
| 466 | |
| 467 | trans_size = TRANS_SIZE_16; |
| 468 | |
| 469 | for(i = 0; i < trans_size; i++) |
| 470 | { |
| 471 | /* Checking for Zero Cols */ |
| 472 | if((zero_cols & 1) == 1) |
| 473 | { |
| 474 | for(j = 0; j < trans_size; j++) |
| 475 | pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd]; |
| 476 | } |
| 477 | else |
| 478 | { |
| 479 | for(j = 0; j < trans_size; j++) |
| 480 | { |
| 481 | WORD32 iquant_out; |
| 482 | IQUANT(iquant_out, |
| 483 | pi2_src[j * src_strd], |
| 484 | pi2_dequant_coeff[j * trans_size] * g_ihevc_iquant_scales[qp_rem], |
| 485 | shift_iq, qp_div); |
| 486 | iquant_out = (iquant_out + 16) >> 5; |
| 487 | pu1_dst[j * dst_strd] = |
| 488 | CLIP_U8(iquant_out + pu1_pred[j * pred_strd]); |
| 489 | } |
| 490 | } |
| 491 | pi2_src++; |
| 492 | pi2_dequant_coeff++; |
| 493 | pu1_pred++; |
| 494 | pu1_dst++; |
| 495 | |
| 496 | zero_cols = zero_cols >> 1; |
| 497 | } |
| 498 | } |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | /** |
| 503 | ******************************************************************************* |
| 504 | * |
| 505 | * @brief |
| 506 | * This function performs inverse quantization and reconstruction for 32x32 |
| 507 | * input block |
| 508 | * |
| 509 | * @par Description: |
| 510 | * This function performs inverse quantization and reconstruction for 32x32 |
| 511 | * input block |
| 512 | * |
| 513 | * @param[in] pi2_src |
| 514 | * Input 32x32 coefficients |
| 515 | * |
| 516 | * @param[in] pu1_pred |
| 517 | * Prediction 32x32 block |
| 518 | * |
| 519 | * @param[in] pi2_dequant_coeff |
| 520 | * Dequant Coeffs |
| 521 | * |
| 522 | * @param[out] pu1_dst |
| 523 | * Output 32x32 block |
| 524 | * |
| 525 | * @param[in] qp_div |
| 526 | * Quantization parameter / 6 |
| 527 | * |
| 528 | * @param[in] qp_rem |
| 529 | * Quantization parameter % 6 |
| 530 | * |
| 531 | * @param[in] src_strd |
| 532 | * Input stride |
| 533 | * |
| 534 | * @param[in] pred_strd |
| 535 | * Prediction stride |
| 536 | * |
| 537 | * @param[in] dst_strd |
| 538 | * Output Stride |
| 539 | * |
| 540 | * @param[in] zero_cols |
| 541 | * Zero columns in pi2_src |
| 542 | * |
| 543 | * @returns Void |
| 544 | * |
| 545 | * @remarks |
| 546 | * None |
| 547 | * |
| 548 | ******************************************************************************* |
| 549 | */ |
| 550 | |
| 551 | void ihevc_iquant_recon_32x32(WORD16 *pi2_src, |
| 552 | UWORD8 *pu1_pred, |
| 553 | WORD16 *pi2_dequant_coeff, |
| 554 | UWORD8 *pu1_dst, |
| 555 | WORD32 qp_div, /* qpscaled / 6 */ |
| 556 | WORD32 qp_rem, /* qpscaled % 6 */ |
| 557 | WORD32 src_strd, |
| 558 | WORD32 pred_strd, |
| 559 | WORD32 dst_strd, |
| 560 | WORD32 zero_cols) |
| 561 | { |
| 562 | |
| 563 | { |
| 564 | /* Inverse Quant and recon */ |
| 565 | { |
| 566 | WORD32 i, j; |
| 567 | WORD32 shift_iq; |
| 568 | WORD32 trans_size; |
| 569 | /* Inverse Quantization constants */ |
| 570 | { |
| 571 | WORD32 log2_trans_size, bit_depth; |
| 572 | |
| 573 | log2_trans_size = 5; |
| 574 | bit_depth = 8 + 0; |
| 575 | shift_iq = bit_depth + log2_trans_size - 5; |
| 576 | } |
| 577 | |
| 578 | trans_size = TRANS_SIZE_32; |
| 579 | |
| 580 | for(i = 0; i < trans_size; i++) |
| 581 | { |
| 582 | /* Checking for Zero Cols */ |
| 583 | if((zero_cols & 1) == 1) |
| 584 | { |
| 585 | for(j = 0; j < trans_size; j++) |
| 586 | pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd]; |
| 587 | } |
| 588 | else |
| 589 | { |
| 590 | for(j = 0; j < trans_size; j++) |
| 591 | { |
| 592 | WORD32 iquant_out; |
| 593 | IQUANT(iquant_out, |
| 594 | pi2_src[j * src_strd], |
| 595 | pi2_dequant_coeff[j * trans_size] * g_ihevc_iquant_scales[qp_rem], |
| 596 | shift_iq, qp_div); |
| 597 | iquant_out = (iquant_out + 16) >> 5; |
| 598 | pu1_dst[j * dst_strd] = |
| 599 | CLIP_U8(iquant_out + pu1_pred[j * pred_strd]); |
| 600 | } |
| 601 | } |
| 602 | pi2_src++; |
| 603 | pi2_dequant_coeff++; |
| 604 | pu1_pred++; |
| 605 | pu1_dst++; |
| 606 | |
| 607 | zero_cols = zero_cols >> 1; |
| 608 | } |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | |