1 /* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18 #include "mp4enc_lib.h" 19 #include "fastquant_inline.h" 20 21 #define siz 63 22 #define LSL 18 23 24 25 const static UChar imask[8] = {128, 64, 32, 16, 8, 4, 2, 1}; 26 #define SIGN0(a) ( ((a)<0) ? -1 : (((a)>0) ? 1 : 0) ) 27 28 /* variable bit precision quantization scale */ 29 /* used to avoid using 32-bit multiplication */ 30 const static Short scaleArrayV[32] = {0, 16384, 8192, 5462, /* 15 */ 31 4096, 3277, 2731, 2341, 32 4096, 3641, 3277, 2979, /* 16 */ 33 2731, 2521, 2341, 2185, 34 4096, 3856, 3641, 3450, /* 17 */ 35 3277, 3121, 2979, 2850, 36 5462, 5243, 5042, 4855, /* 18 */ 37 4682, 4520, 4370, 4229 38 }; 39 40 /* scale for dc_scaler and qmat, note, no value smaller than 8 */ 41 const static Short scaleArrayV2[47] = {0, 0, 0, 0, 0, 0, 0, 0, /* 15 */ 42 4096, 3641, 3277, 2979, 2731, 2521, 2341, 2185, 43 4096, 3856, 3641, 3450, 3277, 3121, 2979, 2850, /* 16 */ 44 2731, 2622, 2521, 2428, 2341, 2260, 2185, 2115, 45 4096, 3972, 3856, 3745, 3641, 3543, 3450, 3361, /* 17 */ 46 3277, 3197, 3121, 3049, 2979, 2913, 2850 47 }; 48 49 /* AAN scale and zigzag */ 50 const static Short AANScale[64] = 51 { 52 /* 0 */ 0x1000, 0x0B89, 0x0C3E, 0x0D9B, 0x1000, 0x0A2E, 0x0EC8, 0x0E7F, 53 /* 1 */ 0x0B89, 0x0851, 0x08D4, 0x09CF, 0x0B89, 0x0757, 0x0AA8, 0x0A73, 54 /* 2 */ 0x0C3E, 0x08D4, 0x095F, 0x0A6A, 0x0C3E, 0x07CB, 0x0B50, 0x0B18, 55 /* 3 */ 0x0D9B, 0x09CF, 0x0A6A, 0x0B92, 0x0D9B, 0x08A8, 0x0C92, 0x0C54, 56 /* 4 */ 0x1000, 0x0B89, 0x0C3E, 0x0D9B, 0x1000, 0x0A2E, 0x0EC8, 0x0E7F, 57 /* 5 */ 0x0A2E, 0x0757, 0x07CB, 0x08A8, 0x0A2E, 0x067A, 0x0968, 0x0939, 58 /* 6 */ 0x0EC8, 0x0AA8, 0x0B50, 0x0C92, 0x0EC8, 0x0968, 0x0DA8, 0x0D64, 59 /* 7 */ 0x0E7F, 0x0A73, 0x0B18, 0x0C54, 0x0E7F, 0x0939, 0x0D64, 0x0D23 60 }; 61 62 const static UShort ZZTab[64] = 63 { 64 /* 0 */ 0x0, 0x2, 0xA, 0xC, 0x1C, 0x1E, 0x36, 0x38, 65 /* 1 */ 0x4, 0x8, 0xE, 0x1A, 0x20, 0x34, 0x3A, 0x54, 66 /* 2 */ 0x6, 0x10, 0x18, 0x22, 0x32, 0x3C, 0x52, 0x56, 67 /* 3 */ 0x12, 0x16, 0x24, 0x30, 0x3E, 0x50, 0x58, 0x6A, 68 /* 4 */ 0x14, 0x26, 0x2E, 0x40, 0x4E, 0x5A, 0x68, 0x6C, 69 /* 5 */ 0x28, 0x2C, 0x42, 0x4C, 0x5C, 0x66, 0x6E, 0x78, 70 /* 6 */ 0x2A, 0x44, 0x4A, 0x5E, 0x64, 0x70, 0x76, 0x7A, 71 /* 7 */ 0x46, 0x48, 0x60, 0x62, 0x72, 0x74, 0x7C, 0x7E 72 }; 73 74 75 //Tao need to remove, write another version of abs 76 //#include <math.h> 77 78 /* ======================================================================== */ 79 /* Function : cal_dc_scalerENC */ 80 /* Date : 01/25/2000 */ 81 /* Purpose : calculation of DC quantization scale according to the 82 incoming Q and type; */ 83 /* In/out : */ 84 /* Int Qp Quantizer */ 85 /* Return : */ 86 /* DC Scaler */ 87 /* Modified : */ 88 /* ======================================================================== */ 89 /* ======================================================================== */ 90 Int cal_dc_scalerENC(Int QP, Int type) 91 { 92 93 Int dc_scaler; 94 if (type == 1) 95 { 96 if (QP > 0 && QP < 5) 97 dc_scaler = 8; 98 else if (QP > 4 && QP < 9) 99 dc_scaler = 2 * QP; 100 else if (QP > 8 && QP < 25) 101 dc_scaler = QP + 8; 102 else 103 dc_scaler = 2 * QP - 16; 104 } 105 else 106 { 107 if (QP > 0 && QP < 5) 108 dc_scaler = 8; 109 else if (QP > 4 && QP < 25) 110 dc_scaler = (QP + 13) / 2; 111 else 112 dc_scaler = QP - 6; 113 } 114 return dc_scaler; 115 } 116 117 118 /*********************************************************************** 119 Function: BlckQuantDequantH263 120 Date: June 15, 1999 121 Purpose: Combine BlockQuantH263 and BlockDequantH263ENC 122 Input: coeff=> DCT coefficient 123 Output: qcoeff=> quantized coefficient 124 rcoeff=> reconstructed coefficient 125 return CBP for this block 126 4/2/01, correct dc_scaler for short_header mode. 127 5/14/01, 128 changed the division into LUT multiplication/shift and other 129 modifications to speed up fastQuant/DeQuant (check for zero 1st, rowq LUT, 130 fast bitmaprow mask and borrowed Addition method instead of ifs from , ). 131 6/25/01, 132 Further optimization (~100K/QCIF), need more testing/comment before integration. 133 134 7/4/01, break up Inter / Intra function and merge for different cases. 135 7/22/01, combine AAN scaling here and reordering. 136 7/24/01, , reorder already done in FDCT, the input here is in the next block and 137 it's the 138 transpose of the raster scan. Output the same order (for proof of concenpt). 139 8/1/01, , change FDCT to do row/column FDCT without reordering, input is still 140 in the next block. The reconstructed DCT output is current block in normal 141 order. The quantized output is in zigzag scan order for INTER, row/column for 142 INTRA. Use bitmapzz for zigzag RunLevel for INTER. The quantization is done 143 in column/row scanning order. 144 8/2/01, , change IDCT to do column/row, change bitmaprow/col to the opposite. 145 8/3/01, , add clipping to the reconstructed coefficient [-2047,2047] 146 9/4/05, , removed scaling for AAN IDCT, use Chen IDCT instead. 147 ********************************************************************/ 148 149 Int BlockQuantDequantH263Inter(Short *rcoeff, Short *qcoeff, struct QPstruct *QuantParam, 150 UChar bitmapcol[ ], UChar *bitmaprow, UInt *bitmapzz, 151 Int dctMode, Int comp, Int dummy, UChar shortHeader) 152 { 153 Int i, zz; 154 Int tmp, coeff, q_value; 155 Int QPdiv2 = QuantParam->QPdiv2; 156 Int QPx2 = QuantParam->QPx2; 157 Int Addition = QuantParam->Addition; 158 Int QPx2plus = QuantParam->QPx2plus; 159 Int round = 1 << 15; 160 Int q_scale = scaleArrayV[QuantParam->QP]; 161 Int shift = 15 + (QPx2 >> 4); 162 Int *temp; 163 UChar *bcolptr = bitmapcol; 164 Int ac_clip; /* quantized coeff bound */ 165 166 OSCL_UNUSED_ARG(comp); 167 OSCL_UNUSED_ARG(dummy); 168 169 170 if (shortHeader) ac_clip = 126; /* clip between [-127,126] (standard allows 127!) */ 171 else ac_clip = 2047; /* clip between [-2048,2047] */ 172 173 /* reset all bitmap to zero */ 174 temp = (Int*) bitmapcol; 175 temp[0] = temp[1] = 0; 176 bitmapzz[0] = bitmapzz[1] = 0; 177 *bitmaprow = 0; 178 QPx2plus <<= 4; 179 QPx2plus -= 8; 180 181 rcoeff += 64; /* actual data is 64 item ahead */ 182 //end = rcoeff + dctMode - 1; 183 //rcoeff--; 184 bcolptr--; 185 i = 0; 186 187 do 188 { 189 bcolptr++; 190 //rcoeff++; 191 //i=0; 192 coeff = rcoeff[i]; 193 if (coeff == 0x7fff) /* all zero column */ 194 { 195 i++; 196 continue; 197 } 198 199 do 200 { 201 if (coeff >= -QPx2plus && coeff < QPx2plus) /* quantize to zero */ 202 { 203 i += 8; 204 if (i < (dctMode << 3)) 205 { 206 coeff = rcoeff[i]; 207 if (coeff > -QPx2plus && coeff < QPx2plus) /* quantize to zero */ 208 { 209 i += 8; 210 coeff = rcoeff[i]; 211 continue; 212 } 213 else 214 goto NONZERO1; 215 } 216 } 217 else 218 { 219 NONZERO1: 220 /* scaling */ 221 q_value = AANScale[i]; /* load scale AAN */ 222 zz = ZZTab[i]; /* zigzag order */ 223 224 coeff = aan_scale(q_value, coeff, round, QPdiv2); 225 q_value = coeff_quant(coeff, q_scale, shift); 226 227 /* dequantization */ 228 if (q_value) 229 { 230 231 //coeff = PV_MIN(ac_clip,PV_MAX(-ac_clip-1, q_value)); 232 q_value = coeff_clip(q_value, ac_clip); 233 qcoeff[zz>>1] = q_value; 234 235 // dequant and clip 236 //coeff = PV_MIN(2047,PV_MAX(-2048, q_value)); 237 tmp = 2047; 238 coeff = coeff_dequant(q_value, QPx2, Addition, tmp); 239 rcoeff[i-64] = coeff; 240 241 (*bcolptr) |= imask[i>>3]; 242 if ((zz >> 1) > 31) bitmapzz[1] |= (1 << (63 - (zz >> 1))); 243 else bitmapzz[0] |= (1 << (31 - (zz >> 1))); 244 } 245 i += 8; 246 coeff = rcoeff[i]; 247 } 248 } 249 while (i < (dctMode << 3)); 250 251 i += (1 - (dctMode << 3)); 252 } 253 while (i < dctMode) ; 254 255 i = dctMode; 256 tmp = 1 << (8 - i); 257 while (i--) 258 { 259 if (bitmapcol[i])(*bitmaprow) |= tmp; 260 tmp <<= 1; 261 } 262 263 if (*bitmaprow) 264 return 1; 265 else 266 return 0; 267 } 268 269 Int BlockQuantDequantH263Intra(Short *rcoeff, Short *qcoeff, struct QPstruct *QuantParam, 270 UChar bitmapcol[ ], UChar *bitmaprow, UInt *bitmapzz, 271 Int dctMode, Int comp, Int dc_scaler, UChar shortHeader) 272 { 273 Int i; 274 Int tmp, coeff, q_value; 275 Int QPx2 = QuantParam->QPx2; 276 Int Addition = QuantParam->Addition; 277 Int QPx2plus = QuantParam->QPx2plus; 278 Int round = 1 << 15; 279 Int q_scale = scaleArrayV[QuantParam->QP]; 280 Int shift = 15 + (QPx2 >> 4); 281 UChar *bmcolptr = bitmapcol; 282 Int ac_clip; /* quantized coeff bound */ 283 284 OSCL_UNUSED_ARG(bitmapzz); 285 OSCL_UNUSED_ARG(comp); 286 287 288 if (shortHeader) ac_clip = 126; /* clip between [-127,126] (standard allows 127!) */ 289 else ac_clip = 2047; /* clip between [-2048,2047] */ 290 291 *((Int*)bitmapcol) = *((Int*)(bitmapcol + 4)) = 0; 292 *bitmaprow = 0; 293 294 QPx2plus = QPx2 << 4; 295 QPx2plus -= 8; 296 297 rcoeff += 64; /* actual data is 64 element ahead */ 298 i = 0; 299 300 /* DC value */ 301 coeff = *rcoeff; 302 /* scaling */ 303 if (coeff == 0x7fff && !shortHeader) /* all zero column */ 304 { 305 bmcolptr++; 306 i++; 307 } 308 else 309 { 310 if (coeff == 0x7fff) /* shortHeader on */ 311 { 312 coeff = 1; /* can't be zero */ 313 qcoeff[0] = coeff; 314 coeff = coeff * dc_scaler; 315 coeff = PV_MAX(-2048, PV_MIN(2047, coeff)); 316 rcoeff[-64] = coeff; 317 bitmapcol[0] |= 128; 318 bmcolptr++; 319 //qcoeff++; 320 //rcoeff++; 321 //i=0; 322 i++; 323 } 324 else 325 { 326 q_value = round + (coeff << 12); 327 coeff = q_value >> 16; 328 if (coeff >= 0) coeff += (dc_scaler >> 1) ; 329 else coeff -= (dc_scaler >> 1) ; 330 q_value = scaleArrayV2[dc_scaler]; 331 coeff = coeff * q_value; 332 coeff >>= (15 + (dc_scaler >> 4)); 333 coeff += ((UInt)coeff >> 31); 334 335 if (shortHeader) 336 coeff = PV_MAX(1, PV_MIN(254, coeff)); 337 338 if (coeff) 339 { 340 qcoeff[0] = coeff; 341 coeff = coeff * dc_scaler; 342 coeff = PV_MAX(-2048, PV_MIN(2047, coeff)); 343 rcoeff[-64] = coeff; 344 bitmapcol[0] |= 128; 345 } 346 i += 8; 347 } 348 } 349 /* AC values */ 350 do 351 { 352 coeff = rcoeff[i]; 353 if (coeff == 0x7fff) /* all zero row */ 354 { 355 bmcolptr++; 356 i++; 357 continue; 358 } 359 do 360 { 361 if (coeff >= -QPx2plus && coeff < QPx2plus) /* quantize to zero */ 362 { 363 i += 8; 364 if (i < dctMode << 3) 365 { 366 coeff = rcoeff[i]; 367 if (coeff > -QPx2plus && coeff < QPx2plus) /* quantize to zero */ 368 { 369 i += 8; 370 coeff = rcoeff[i]; 371 continue; 372 } 373 else 374 goto NONZERO2; 375 } 376 } 377 else 378 { 379 NONZERO2: /* scaling */ 380 q_value = AANScale[i]; /* 09/02/05 */ 381 382 /* scale aan */ 383 q_value = smlabb(q_value, coeff, round); 384 coeff = q_value >> 16; 385 /* quant */ 386 q_value = smulbb(q_scale, coeff); /*mov q_value, coeff, lsl #14 */ 387 /*smull tmp, coeff, q_value, q_scale*/ 388 q_value >>= shift; 389 q_value += ((UInt)q_value >> 31); /* add 1 if negative */ 390 391 if (q_value) 392 { 393 //coeff = PV_MIN(ac_clip,PV_MAX(-ac_clip-1, q_value)); 394 q_value = coeff_clip(q_value, ac_clip); 395 qcoeff[i] = q_value; 396 397 // dequant and clip 398 //coeff = PV_MIN(2047,PV_MAX(-2048, q_value)); 399 tmp = 2047; 400 coeff = coeff_dequant(q_value, QPx2, Addition, tmp); 401 rcoeff[i-64] = coeff; 402 403 (*bmcolptr) |= imask[i>>3]; 404 } 405 i += 8; 406 coeff = rcoeff[i]; 407 } 408 } 409 while (i < (dctMode << 3)) ; 410 411 //qcoeff++; /* next column */ 412 bmcolptr++; 413 //rcoeff++; 414 i += (1 - (dctMode << 3)); //i = 0; 415 } 416 while (i < dctMode);//while(rcoeff < end) ; 417 418 i = dctMode; 419 tmp = 1 << (8 - i); 420 while (i--) 421 { 422 if (bitmapcol[i])(*bitmaprow) |= tmp; 423 tmp <<= 1; 424 } 425 426 if (((*bitmaprow)&127) || (bitmapcol[0]&127)) /* exclude DC */ 427 return 1; 428 else 429 return 0; 430 } 431 432 433 /*********************************************************************** 434 Function: BlckQuantDequantH263DC 435 Date: 5/3/2001 436 Purpose: H.263 quantization mode, only for DC component 437 6/25/01, 438 Further optimization (~100K/QCIF), need more testing/comment before integration. 439 440 ********************************************************************/ 441 Int BlockQuantDequantH263DCInter(Short *rcoeff, Short *qcoeff, struct QPstruct *QuantParam, 442 UChar *bitmaprow, UInt *bitmapzz, Int dummy, UChar shortHeader) 443 { 444 Int coeff, scale_q; 445 Int CBP = 0; 446 Int QP = QuantParam->QP; 447 Int QPx2plus = QuantParam->QPx2plus; 448 Int Addition = QuantParam->Addition; 449 Int shift = 15 + (QP >> 3); 450 Int ac_clip; /* quantized coeff bound */ 451 Int tmp; 452 453 OSCL_UNUSED_ARG(dummy); 454 455 if (shortHeader) ac_clip = 126; /* clip between [-127,126] (standard allows 127!) */ 456 else ac_clip = 2047; /* clip between [-2048,2047] */ 457 458 *bitmaprow = 0; 459 bitmapzz[0] = bitmapzz[1] = 0; 460 coeff = rcoeff[0]; 461 462 if (coeff >= -QPx2plus && coeff < QPx2plus) 463 { 464 rcoeff[0] = 0; 465 return CBP;//rcoeff[0] = 0; not needed since CBP will be zero 466 } 467 else 468 { 469 scale_q = scaleArrayV[QP]; 470 471 coeff = aan_dc_scale(coeff, QP); 472 473 scale_q = coeff_quant(coeff, scale_q, shift); 474 475 //coeff = PV_MIN(ac_clip,PV_MAX(-ac_clip-1, tmp)); 476 scale_q = coeff_clip(scale_q, ac_clip); 477 478 qcoeff[0] = scale_q; 479 480 QP <<= 1; 481 //coeff = PV_MIN(2047,PV_MAX(-2048, tmp)); 482 tmp = 2047; 483 coeff = coeff_dequant(scale_q, QP, Addition, tmp); 484 485 rcoeff[0] = coeff; 486 487 (*bitmaprow) = 128; 488 bitmapzz[0] = (ULong)1 << 31; 489 CBP = 1; 490 } 491 return CBP; 492 } 493 494 495 Int BlockQuantDequantH263DCIntra(Short *rcoeff, Short *qcoeff, struct QPstruct *QuantParam, 496 UChar *bitmaprow, UInt *bitmapzz, Int dc_scaler, UChar shortHeader) 497 { 498 Int tmp, coeff; 499 500 OSCL_UNUSED_ARG(QuantParam); 501 502 *bitmaprow = 0; 503 coeff = rcoeff[0]; 504 505 if (coeff >= 0) coeff += (dc_scaler >> 1) ; 506 else coeff -= (dc_scaler >> 1) ; 507 tmp = scaleArrayV2[dc_scaler]; 508 tmp = coeff * tmp; 509 tmp >>= (15 + (dc_scaler >> 4)); 510 tmp += ((UInt)tmp >> 31); 511 512 if (shortHeader) 513 tmp = PV_MAX(1, PV_MIN(254, tmp)); 514 515 if (tmp) 516 { 517 qcoeff[0] = tmp; 518 coeff = tmp * dc_scaler; 519 coeff = PV_MAX(-2048, PV_MIN(2047, coeff)); 520 rcoeff[0] = coeff; 521 *bitmaprow = 128; 522 bitmapzz[0] = (ULong)1 << 31; 523 } 524 525 return 0; 526 } 527 528 #ifndef NO_MPEG_QUANT 529 /*********************************************************************** 530 Function: BlckQuantDequantMPEG 531 Date: June 15, 1999 532 Purpose: Combine BlockQuantMPEG and BlockDequantMPEGENC 533 Input: coeff=> DCT coefficient 534 Output: qcoeff=> quantized coefficient 535 rcoeff=> reconstructed coefficient 536 Modified: 7/5/01, break up function for Intra/Inter 537 8/3/01, update with changes from H263 quant mode. 538 8/3/01, add clipping to the reconstructed coefficient [-2048,2047] 539 8/6/01, optimize using multiplicative lookup-table. 540 can be further optimized using ARM assembly, e.g., 541 clipping, 16-bit mult., etc !!!!!!!!!!!!! 542 ********************************************************************/ 543 544 Int BlockQuantDequantMPEGInter(Short *rcoeff, Short *qcoeff, Int QP, Int *qmat, 545 UChar bitmapcol[ ], UChar *bitmaprow, UInt *bitmapzz, 546 Int dctMode, Int comp, Int dc_scaler) 547 { 548 Int i, zz; 549 Int tmp, coeff, q_value = 0; 550 Int sum = 0; 551 Int stepsize, QPx2 = QP << 1; 552 Int CBP = 0; 553 Int round = 1 << 15; 554 Int q_scale = scaleArrayV[QP]; 555 Int shift = 15 + (QP >> 3); 556 UChar *bcolptr = bitmapcol; 557 558 OSCL_UNUSED_ARG(dc_scaler); 559 OSCL_UNUSED_ARG(comp); 560 561 562 *((Int*)bitmapcol) = *((Int*)(bitmapcol + 4)) = 0; 563 bitmapzz[0] = bitmapzz[1] = 0; 564 *bitmaprow = 0; 565 566 rcoeff += 64; 567 i = 0; 568 bcolptr--; 569 570 do 571 { 572 bcolptr++; 573 coeff = rcoeff[i]; 574 if (coeff == 0x7fff) /* all zero column */ 575 { 576 i++; 577 continue; 578 } 579 do 580 { 581 q_value = AANScale[i]; /* 09/02/05 scaling for AAN*/ 582 /* aan scaling */ 583 q_value = smlabb(q_value, coeff, round); 584 585 coeff = q_value >> 16; 586 587 stepsize = qmat[i]; 588 // if(coeff>0) coeff = (16*coeff + (stepsize/2)) / stepsize; 589 // else coeff = (16*coeff - (stepsize/2)) / stepsize; 590 coeff <<= 4; 591 if (coeff >= 0) coeff += (stepsize >> 1) ; 592 else coeff -= (stepsize >> 1) ; 593 q_value = scaleArrayV2[stepsize]; 594 /* mpeg quant table scale */ 595 coeff = smulbb(coeff, q_value); 596 597 coeff >>= (15 + (stepsize >> 4)); 598 coeff += ((UInt)coeff >> 31); 599 600 /* QP scale */ 601 if (coeff >= -QPx2 && coeff < QPx2) /* quantized to zero*/ 602 { 603 i += 8; 604 } 605 else 606 { 607 // q_value = coeff/(QPx2); 608 q_value = coeff_quant(coeff, q_scale, shift); 609 610 if (q_value) /* dequant */ 611 { 612 613 zz = ZZTab[i]; /* zigzag order */ 614 615 tmp = 2047; 616 617 q_value = clip_2047(q_value, tmp); 618 619 qcoeff[zz>>1] = q_value; 620 621 //q_value=(((coeff*2)+SIGN0(coeff))*stepsize*QP)/16; 622 /* no need for SIGN0, no zero coming in this {} */ 623 q_value = coeff_dequant_mpeg(q_value, stepsize, QP, tmp); 624 625 rcoeff[i-64] = q_value; 626 627 sum += q_value; 628 (*bcolptr) |= imask[i>>3]; 629 if ((zz >> 1) > 31) bitmapzz[1] |= (1 << (63 - (zz >> 1))); 630 else bitmapzz[0] |= (1 << (31 - (zz >> 1))); 631 } 632 i += 8; 633 } 634 coeff = rcoeff[i]; 635 } 636 while (i < (dctMode << 3)) ; 637 638 i += (1 - (dctMode << 3)); 639 } 640 while (i < dctMode) ; 641 642 i = dctMode; 643 tmp = 1 << (8 - i); 644 while (i--) 645 { 646 if (bitmapcol[i])(*bitmaprow) |= tmp; 647 tmp <<= 1; 648 } 649 650 if (*bitmaprow) 651 CBP = 1; /* check CBP before mismatch control, 7/5/01 */ 652 653 /* Mismatch control, 5/3/01 */ 654 if (CBP) 655 { 656 if ((sum&0x1) == 0) 657 { 658 rcoeff--; /* rcoeff[63] */ 659 coeff = *rcoeff; 660 coeff ^= 0x1; 661 *rcoeff = coeff; 662 if (coeff) 663 { 664 bitmapcol[7] |= 1; 665 (*bitmaprow) |= 1; 666 } 667 } 668 } 669 670 return CBP; 671 } 672 673 Int BlockQuantDequantMPEGIntra(Short *rcoeff, Short *qcoeff, Int QP, Int *qmat, 674 UChar bitmapcol[ ], UChar *bitmaprow, UInt *bitmapzz, 675 Int dctMode, Int comp, Int dc_scaler) 676 { 677 Int i; 678 Int tmp, coeff, q_value = 0; 679 Int sum = 0; 680 Int stepsize; 681 Int CBP = 0; 682 Int round = 1 << 15; 683 Int q_scale = scaleArrayV[QP]; 684 Int shift = 15 + (QP >> 3); 685 Int round2 = (3 * QP + 2) >> 2; 686 Int QPx2plus = (QP << 1) - round2; 687 UChar *bmcolptr = bitmapcol; 688 689 OSCL_UNUSED_ARG(bitmapzz); 690 OSCL_UNUSED_ARG(comp); 691 692 *((Int*)bitmapcol) = *((Int*)(bitmapcol + 4)) = 0; 693 *bitmaprow = 0; 694 695 rcoeff += 64; 696 i = 0; 697 698 /* DC value */ 699 coeff = *rcoeff; 700 701 if (coeff == 0x7fff) /* all zero column */ 702 { 703 bmcolptr++; 704 i++; 705 } 706 else 707 { 708 q_value = round + (coeff << 12); 709 coeff = q_value >> 16; 710 /*if (coeff >= 0) coeff = (coeff + (dc_scaler/2)) / dc_scaler; 711 else coeff = (coeff - (dc_scaler/2)) / dc_scaler;*/ 712 if (coeff >= 0) coeff += (dc_scaler >> 1) ; 713 else coeff -= (dc_scaler >> 1) ; 714 q_value = scaleArrayV2[dc_scaler]; 715 716 /* mpeg quant table scale */ 717 coeff = smulbb(coeff, q_value); 718 719 coeff >>= (15 + (dc_scaler >> 4)); 720 coeff += ((UInt)coeff >> 31); 721 722 if (coeff) 723 { 724 coeff = PV_MAX(1, PV_MIN(254, coeff)); 725 qcoeff[0] = coeff; 726 727 coeff = smulbb(coeff, dc_scaler); 728 729 q_value = clip_2047(coeff, 2047); 730 731 sum = q_value; 732 733 rcoeff[-64] = q_value; 734 735 bitmapcol[0] |= 128; 736 } 737 i += 8; 738 } 739 /* AC values */ 740 do 741 { 742 coeff = rcoeff[i]; 743 if (coeff == 0x7fff) /* all zero row */ 744 { 745 bmcolptr++; 746 i++; 747 continue; 748 } 749 do 750 { 751 /* scaling */ 752 q_value = AANScale[i]; /* 09/02/05 */ 753 754 /* q_value = coeff*q_value + round */ 755 q_value = smlabb(coeff, q_value, round); 756 coeff = q_value >> 16; 757 758 stepsize = qmat[i]; 759 /*if(coeff>0) coeff = (16*coeff + (stepsize/2)) / stepsize; 760 else coeff = (16*coeff - (stepsize/2)) / stepsize;*/ 761 coeff <<= 4; 762 if (coeff >= 0) coeff += (stepsize >> 1) ; 763 else coeff -= (stepsize >> 1) ; 764 q_value = scaleArrayV2[stepsize]; 765 766 /* scale mpeg quant */ 767 coeff = smulbb(coeff, q_value); 768 769 coeff >>= (15 + (stepsize >> 4)); 770 coeff += ((UInt)coeff >> 31); 771 772 if (coeff >= -QPx2plus && coeff < QPx2plus) 773 { 774 i += 8; 775 } 776 else 777 { 778 //q_value = ( coeff + SIGN0(coeff)*((3*QP+2)/4))/(2*QP); 779 if (coeff > 0) coeff += round2; 780 else if (coeff < 0) coeff -= round2; 781 782 q_value = smulbb(coeff, q_scale); 783 q_value >>= shift; 784 q_value += ((UInt)q_value >> 31); 785 786 if (q_value) 787 { 788 tmp = 2047; 789 q_value = clip_2047(q_value, tmp); 790 791 qcoeff[i] = q_value; 792 793 stepsize = smulbb(stepsize, QP); 794 q_value = smulbb(q_value, stepsize); 795 796 q_value = coeff_dequant_mpeg_intra(q_value, tmp); 797 //q_value = (coeff*stepsize*QP*2)/16; 798 799 rcoeff[i-64] = q_value; 800 801 sum += q_value; 802 (*bmcolptr) |= imask[i>>3]; 803 } 804 i += 8; 805 } 806 coeff = rcoeff[i]; 807 } 808 while (i < (dctMode << 3)) ; 809 810 bmcolptr++; 811 i += (1 - (dctMode << 3)); 812 } 813 while (i < dctMode) ; 814 815 i = dctMode; 816 tmp = 1 << (8 - i); 817 while (i--) 818 { 819 if (bitmapcol[i])(*bitmaprow) |= tmp; 820 tmp <<= 1; 821 } 822 823 if (((*bitmaprow) &127) || (bitmapcol[0]&127)) 824 CBP = 1; /* check CBP before mismatch control, 7/5/01 */ 825 826 /* Mismatch control, 5/3/01 */ 827 if (CBP || bitmapcol[0]) 828 { 829 if ((sum&0x1) == 0) 830 { 831 rcoeff--; /* rcoeff[63] */ 832 coeff = *rcoeff; 833 coeff ^= 0x1; 834 *rcoeff = coeff; 835 if (coeff) 836 { 837 bitmapcol[7] |= 1; 838 (*bitmaprow) |= 1; 839 } 840 } 841 } 842 843 return CBP; 844 } 845 846 847 /*********************************************************************** 848 Function: BlckQuantDequantMPEGDC 849 Date: 5/3/2001 850 Purpose: MPEG Quant/Dequant for DC only block. 851 ********************************************************************/ 852 Int BlockQuantDequantMPEGDCInter(Short *rcoeff, Short *qcoeff, Int QP, Int *qmat, 853 UChar bitmapcol[ ], UChar *bitmaprow, UInt *bitmapzz, Int dummy) 854 { 855 Int q_value, coeff, stepsize; 856 Int CBP = 0; 857 Int q_scale = scaleArrayV[QP]; 858 Int shift = 15 + (QP >> 3); 859 Int QPx2 = QP << 1; 860 861 OSCL_UNUSED_ARG(dummy); 862 863 *((Int*)bitmapcol) = *((Int*)(bitmapcol + 4)) = 0; 864 *bitmaprow = 0; 865 bitmapzz[0] = bitmapzz[1] = 0; 866 coeff = rcoeff[0]; 867 stepsize = qmat[0]; 868 869 /*if(coeff>0) coeff = (16*coeff + (stepsize/2)) / stepsize; 870 else coeff = (16*coeff - (stepsize/2)) / stepsize;*/ 871 coeff <<= 4; 872 if (coeff >= 0) coeff += (stepsize >> 1) ; 873 else coeff -= (stepsize >> 1) ; 874 q_value = scaleArrayV2[stepsize]; 875 876 coeff = smulbb(coeff, q_value); 877 878 coeff >>= (15 + (stepsize >> 4)); 879 coeff += ((UInt)coeff >> 31); 880 881 if (coeff >= -QPx2 && coeff < QPx2) 882 { 883 rcoeff[0] = 0; 884 return CBP; 885 } 886 else 887 { 888 // q_value = coeff/(QPx2); 889 q_value = coeff_quant(coeff, q_scale, shift); 890 891 if (q_value) 892 { 893 894 //PV_MIN(2047,PV_MAX(-2048, q_value)); 895 q_value = clip_2047(q_value, 2047); 896 qcoeff[0] = q_value; 897 q_value = coeff_dequant_mpeg(q_value, stepsize, QP, 2047); 898 //q_value=(((coeff*2)+SIGN0(coeff))*stepsize*QP)/16; 899 rcoeff[0] = q_value; 900 901 bitmapcol[0] = 128; 902 (*bitmaprow) = 128; 903 bitmapzz[0] = (UInt)1 << 31; 904 CBP = 1; 905 906 /* Mismatch control, 5/3/01 */ 907 if ((q_value&0x1) == 0) 908 { 909 rcoeff[63] = 1; /* after scaling it remains the same */ 910 bitmapcol[7] |= 1; 911 (*bitmaprow) |= 1; 912 } 913 } 914 } 915 return CBP; 916 } 917 918 919 Int BlockQuantDequantMPEGDCIntra(Short *rcoeff, Short *qcoeff, Int QP, Int *qmat, 920 UChar bitmapcol[ ], UChar *bitmaprow, UInt *bitmapzz, 921 Int dc_scaler) 922 { 923 Int tmp, coeff, q_value; 924 925 OSCL_UNUSED_ARG(QP); 926 OSCL_UNUSED_ARG(qmat); 927 928 929 *((Int*)bitmapcol) = *((Int*)(bitmapcol + 4)) = 0; 930 *bitmaprow = 0; 931 coeff = rcoeff[0]; 932 933 /*if (coeff >= 0) tmp = (coeff + dc_scaler/2) / dc_scaler; 934 else tmp = (coeff - dc_scaler/2) / dc_scaler;*/ 935 if (coeff >= 0) coeff += (dc_scaler >> 1) ; 936 else coeff -= (dc_scaler >> 1) ; 937 tmp = scaleArrayV2[dc_scaler]; 938 939 tmp = smulbb(tmp, coeff); 940 tmp >>= (15 + (dc_scaler >> 4)); 941 tmp += ((UInt)tmp >> 31); 942 943 if (tmp) 944 { 945 coeff = PV_MAX(1, PV_MIN(254, tmp)); 946 qcoeff[0] = coeff; 947 948 q_value = smulbb(coeff, dc_scaler); 949 q_value = clip_2047(q_value, 2047); 950 rcoeff[0] = q_value; 951 bitmapcol[0] = 128; 952 *bitmaprow = 128; 953 bitmapzz[0] = (UInt)1 << 31; 954 955 /* Mismatch control, 5/3/01 */ 956 if ((q_value&0x1) == 0) 957 { 958 rcoeff[63] = 1; /* after scaling it remains the same */ 959 bitmapcol[7] |= 1; 960 (*bitmaprow) |= 1; 961 } 962 } 963 964 return 0; 965 } 966 #endif 967 968
