/******************************************************************************
* *
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
#include <string.h>
#include "stdio.h"
#include "math.h"
#include <ixheaacd_type_def.h>
#include "ixheaacd_sbr_common.h"
#include "ixheaacd_cnst.h"
#include "ixheaacd_constants.h"
#include "ixheaacd_basic_ops32.h"
#include "ixheaacd_basic_ops16.h"
#include "ixheaacd_basic_ops40.h"
#include "ixheaacd_basic_ops.h"
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_error_standards.h"
#include <ixheaacd_basic_op.h>
#include "ixheaacd_intrinsics.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_aac_rom.h"
#include "ixheaacd_definitions.h"
#include "ixheaacd_error_codes.h"
#include "ixheaacd_pulsedata.h"
#include "ixheaacd_pns.h"
#include "ixheaacd_drc_data_struct.h"
#include "ixheaacd_lt_predict.h"
#include "ixheaacd_channelinfo.h"
#include "ixheaacd_drc_dec.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_block.h"
#include "ixheaacd_channel.h"
#include "ixheaacd_sbr_payload.h"
#include "ixheaacd_common_rom.h"
#include <ixheaacd_type_def.h>
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_sbr_scale.h"
#include "ixheaacd_env_extr_part.h"
#include "ixheaacd_sbr_rom.h"
#include "ixheaacd_stereo.h"
#include "ixheaacd_lpp_tran.h"
#include "ixheaacd_hybrid.h"
#include "ixheaacd_ps_dec.h"
#include "ixheaacd_env_extr.h"
#include "ixheaacd_adts.h"
#include "ixheaacd_audioobjtypes.h"
#include "ixheaacd_memory_standards.h"
#include "ixheaacd_latmdemux.h"
#include "ixheaacd_aacdec.h"
#include "ixheaacd_config.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_mps_dec.h"
#include "ixheaacd_struct_def.h"
#define DRC_SBR_ONE_Q25 (1 << 25)
static PLATFORM_INLINE WORD32 ixheaacd_mult32x16in32_shift29(WORD32 a,
WORD32 b) {
WORD32 result;
WORD64 temp_result;
temp_result = (WORD64)a * (WORD64)b;
result = (WORD32)(temp_result >> 29);
return (result);
}
static PLATFORM_INLINE WORD32 ixheaacd_mult32x16in32_shift25(WORD32 a,
WORD32 b) {
WORD32 result;
WORD64 temp_result;
temp_result = (WORD64)a * (WORD64)b;
temp_result = temp_result >> 25;
if (temp_result >= MAX_32)
result = MAX_32;
else if (temp_result < MIN_32)
result = MIN_32;
else
result = (WORD32)temp_result;
return (result);
}
static WORD32 ixheaacd_drc_pow_tbl_2_q29[] = {
536870912, 537242967, 537615991, 537988562, 538361391, 538734479,
539108539, 539482144, 539856009, 540230847, 540605230, 540979873,
541354776, 541730654, 542106077, 542481760, 542858421, 543234626,
543611091, 543987817, 544365523, 544742772, 545120282, 545498775,
545876810, 546255106, 546633664, 547013208, 547392292, 547771638,
548151972, 548531845, 548911981, 549293107, 549673770, 550054698,
550435889, 550818073, 551199794, 551581779, 551964758, 552347273,
552730053, 553113099, 553497142, 553880719, 554264562, 554649404,
555033779, 555418421, 555803330, 556189241, 556574683, 556960393,
557347107, 557733352, 558119865, 558506646, 558894433, 559281751,
559669337, 560057931, 560446055, 560834448, 561223110, 561612784,
562001985, 562391456, 562781941, 563171952, 563562234, 563952786,
564344355, 564735450, 565126815, 565519199, 565911108, 566303288,
566695739, 567089213, 567482209, 567875478, 568269771, 568663586,
569057673, 569452034, 569847421, 570242329, 570637511, 571033721,
571429451, 571825455, 572221734, 572619044, 573015873, 573412977,
573811114, 574208769, 574606699, 575005666, 575404148, 575802907,
576201942, 576602016, 577001605, 577401471, 577802378, 578202799,
578603497, 579004473, 579406493, 579808025, 580209836, 580612693,
581015061, 581417708, 581820634, 582224610, 582628095, 583031860,
583436676, 583841002, 584245607, 584650493, 585056433, 585461881,
585867610, 586274395, 586680687, 587087260, 587494116, 587902030,
588309450, 588717152, 589125916, 589534184, 589942735, 590351569,
590761467, 591170869, 591580554, 591991306, 592401560, 592812098,
593222920, 593634813, 594046205, 594457883, 594870633, 595282882,
595695417, 596108238, 596522133, 596935527, 597349207, 597763964,
598178218, 598592760, 599008380, 599423497, 599838901, 600254594,
600671368, 601087637, 601504195, 601921837, 602338973, 602756397,
603174111, 603592913, 604011207, 604429790, 604849464, 605268628,
605688083, 606107829, 606528668, 606948996, 607369615, 607791330,
608212533, 608634029, 609055816, 609478701, 609901074, 610323739,
610747505, 611170757, 611594302, 612018141, 612443083, 612867510,
613292231, 613718058, 614143369, 614568974, 614994874, 615421883,
615848375, 616275162, 616703060, 617130439, 617558114, 617986086,
618415172, 618843738, 619272600, 619702579, 620132037, 620561793,
620991846, 621423019, 621853669, 622284618, 622716688, 623148235,
623580081, 624012226, 624445496, 624878241, 625311285, 625745457,
626179103, 626613049, 627048125, 627482673, 627917523, 628352674,
628788957, 629224712, 629660769, 630097961, 630534623, 630971588,
631408855, 631847261, 632285135, 632723313, 633162631, 633601417,
634040507, 634479901, 634920439, 635360443, 635800752, 636242207,
636683127, 637124352, 637565884, 638008564, 638450708, 638893159,
639336761, 639779826, 640223197, 640666876, 641111710, 641556004,
642000607, 642446367, 642891586, 643337114, 643782951, 644229948,
644676404, 645123169, 645571097, 646018482, 646466177, 646914182,
647363354, 647811981, 648260918, 648711025, 649160586, 649610458,
650060643, 650511999, 650962808, 651413929, 651866225, 652317973,
652770033, 653223271, 653675959, 654128960, 654582276, 655036772,
655490716, 655944976, 656400417, 656855307, 657310512, 657766033,
658222739, 658678891, 659135360, 659593017, 660050119, 660507538,
660965274, 661424202, 661882573, 662341262, 662801145, 663260471,
663720114, 664180077, 664641237, 665101837, 665562757, 666024877,
666486436, 666948316, 667410515, 667873918, 668336759, 668799921,
669264288, 669728093, 670192218, 670656666, 671122323, 671587415,
672052829, 672519455, 672985516, 673451899, 673918605, 674386527,
674853881, 675321559, 675790455, 676258782, 676727434, 677196410,
677666608, 678136235, 678606188, 679077364, 679547969, 680018900,
680490157, 680962642, 681434553, 681906792, 682380260, 682853154,
683326375, 683800829, 684274707, 684748914, 685223450, 685699220,
686174414, 686649938, 687126699, 687602882, 688079395, 688556239,
689034324, 689511829, 689989665, 690468745, 690947244, 691426075,
691905238, 692385648, 692865476, 693345636, 693827046, 694307873,
694789033, 695270526, 695753273, 696235434, 696717930, 697201682,
697684847, 698168347, 698652182, 699137277, 699621784, 700106626,
700592731, 701078246, 701564098, 702050286, 702537740, 703024604,
703511804, 704000273, 704488150, 704976365, 705464918, 705954743,
706443974, 706933544, 707424389, 707914639, 708405228, 708896158,
709388365, 709879976, 710371927, 710865159, 711357793, 711850769,
712345028, 712838688, 713332689, 713827033, 714322665, 714817695,
715313068, 715809731, 716305792, 716802196, 717298945, 717796987,
718294425, 718792207, 719291286, 719789759, 720288578, 720787743,
721288207, 721788064, 722288268, 722789774, 723290672, 723791917,
724293510, 724796408, 725298697, 725801333, 726305278, 726808613,
727312296, 727816328, 728321672, 728826404, 729331485, 729837881,
730343664, 730849797, 731356280, 731864082, 732371269, 732878807,
733387666, 733895909, 734404503, 734913450, 735423722, 735933376,
736443382, 736954717, 737465431, 737976499, 738487922, 739000676,
739512808, 740025295, 740539116, 741052315, 741565869, 742079779,
742595027, 743109650, 743624629, 744140950, 744656644, 745172696,
745690092, 746206860, 746723986, 747241470, 747760302, 748278505,
748797067, 749316978, 749836260, 750355901, 750875903, 751397258,
751917981, 752439065, 752961506, 753483313, 754005482, 754528012,
755051903, 755575159, 756098778, 756623759, 757148104, 757672813,
758197885, 758724324, 759250125, 759776290, 760303825, 760830721,
761357981, 761885607, 762414607, 762942965, 763471690, 764001790,
764531249, 765061074, 765591266, 766122838, 766653766, 767185062,
767717742, 768249775, 768782177, 769314948, 769849106, 770382616,
770916497, 771451767, 771986388, 772521379, 773057763, 773593497,
774129603, 774666080, 775203953, 775741174, 776278768, 776817761,
777356101, 777894814, 778433900, 778974389, 779514224, 780054432,
780596047, 781137005, 781678338, 782220046, 782763164, 783305624,
783848460, 784392709, 784936298, 785480264, 786024607, 786570367,
787115466, 787660942, 788207838, 788754071, 789300683, 789847673,
790396087, 790943837, 791491966, 792041522, 792590412, 793139683,
793689333, 794240415, 794790829, 795341624, 795893853, 796445413,
796997355, 797549679, 798103441, 798656532, 799210006, 799764921,
800319163, 800873790, 801428800, 801985256, 802541037, 803097203,
803654817, 804211755, 804769079, 805326789, 805885951, 806444435,
807003307, 807563633, 808123280, 808683314, 809243737, 809805619,
810366819, 810928409, 811491460, 812053829, 812616587, 813179736,
813744351, 814308281, 814872602, 815438392, 816003496, 816568991,
817135959, 817702240, 818268913, 818835978, 819404520, 819972373,
820540619, 821110344, 821679379, 822248808, 822818632, 823389939,
823960554, 824531564, 825104060, 825675863, 826248061, 826820657,
827394742, 827968132, 828541920, 829117201, 829691784, 830266766,
830842146, 831419024, 831995203, 832571781, 833149860, 833727238,
834305017, 834883195, 835462879, 836041861, 836621243, 837202134,
837782320, 838362909, 838943900, 839526403, 840108200, 840690401,
841274117, 841857125, 842440538, 843025469, 843609691, 844194318,
844779350, 845365905, 845951749, 846537999, 847125775, 847712839,
848300310, 848888187, 849477595, 850066289, 850655390, 851246025,
851835944, 852426272, 853017009, 853609284, 854200840, 854792807,
855386315, 855979103, 856572302, 857165912, 857761068, 858355502,
858950348, 859546742, 860142413, 860738498, 861334995, 861933045,
862530370, 863128110, 863727405, 864325973, 864924957, 865524355,
866125314, 866725545, 867326191, 867928401, 868529881, 869131778,
869734092, 870337974, 870941124, 871544692, 872149831, 872754236,
873359061, 873964304, 874571123, 875177207, 875783710, 876391792,
876999138, 877606904, 878215091, 878824861, 879433893, 880043346,
880654386, 881264685, 881875407, 882486553, 883099289, 883711283,
884323700, 884937712, 885550980, 886164672, 886778790, 887394507,
888009477, 888624873, 889241872, 889858122, 890474799, 891093082,
891710615, 892328577, 892946966, 893566965, 894186213, 894805890,
895427180, 896047717, 896668684, 897290081, 897913096, 898535355,
899158046, 899782358, 900405913, 901029900, 901654319, 902280365,
902905651, 903531370, 904158719, 904785306, 905412328, 906039785,
906668875, 907297202, 907925965, 908556365, 909186000, 909816072,
910446581, 911078730, 911710114, 912341935, 912975401, 913608099,
914241235, 914874810, 915510034, 916144489, 916779383, 917415930,
918051705, 918687921, 919325793, 919962891, 920600432, 921238414,
921878057, 922516924, 923156234, 923797209, 924437406, 925078047,
925719132, 926361886, 927003861, 927646281, 928290373, 928933684,
929577441, 930221644, 930867524, 931512622, 932158166, 932805391,
933451831, 934098719, 934746055, 935395077, 936043312, 936691996,
937342369, 937991953, 938641988, 939292472, 939944651, 940596039,
941247878, 941901414, 942554158, 943207354, 943861002, 944516353,
945170909, 945825918, 946482633, 947138552, 947794925, 948451753,
949110291, 949768030, 950426226, 951086135, 951745243, 952404809,
953064832, 953726573, 954387511, 955048908, 955712027, 956374341,
957037115, 957700348, 958365307, 959029460, 959694074, 960360418,
961025954, 961691951, 962358410, 963026603, 963693987, 964361833,
965031418, 965700191, 966369428, 967039128, 967710571, 968381201,
969052296, 969725137, 970397163, 971069654, 971743897, 972417321,
973091213, 973765571, 974441685, 975116980, 975792742, 976470264,
977146964, 977824133, 978501771, 979181174, 979859753, 980538802,
981219619, 981899611, 982580073, 983261008, 983943715, 984625594,
985307946, 985992074, 986675373, 987359145, 988043392, 988729419,
989414615, 990100286, 990787742, 991474364, 992161462, 992849036,
993538401, 994226929, 994915935, 995606734, 996296696, 996987136,
997678055, 998370772, 999062649, 999755006, 1000449165, 1001142483,
1001836281, 1002531886, 1003226647, 1003921889, 1004617614, 1005315149,
1006011839, 1006709012, 1007407999, 1008106140, 1008804764, 1009503872,
1010204800, 1010904879, 1011605442, 1012307830, 1013009365, 1013711388,
1014413896, 1015118233, 1015821717, 1016525688, 1017231492, 1017936440,
1018641876, 1019347801, 1020055565, 1020762470, 1021469865, 1022179101,
1022887478, 1023596346, 1024305704, 1025016910, 1025727253, 1026438089,
1027150775, 1027862597, 1028574913, 1029287722, 1030002386, 1030716185,
1031430478, 1032146630, 1032861915, 1033577694, 1034293970, 1035012111,
1035729381, 1036447148, 1037166784, 1037885547, 1038604809, 1039324569,
1040046202, 1040766961, 1041488219, 1042211355, 1042933614, 1043656374,
1044379635, 1045104778, 1045829042, 1046553809, 1047280462, 1048006234,
1048732509, 1049459287, 1050187958, 1050915745, 1051644036, 1052374224,
1053103526, 1053833333, 1054563647, 1055295861, 1056027188, 1056759022,
1057492761, 1058225610, 1058958967, 1059694233, 1060428608, 1061163492,
1061898885, 1062636193, 1063372607, 1064109531, 1064848373, 1065586320,
1066324778, 1067063748, 1067804642, 1068544637, 1069285146, 1070027582,
1070769118, 1071511168, 1072253732, 1072998229};
static WORD32 ixheaacd_drc_pow_tbl_1_2_q29[] = {
536870912, 536499115, 536126866, 535755584, 535384559, 535013791, 534642573,
534272319, 533902321, 533531874, 533162389, 532793160, 532424187, 532054765,
531686303, 531318096, 530949443, 530581746, 530214304, 529847117, 529479484,
529112805, 528746380, 528379511, 528013594, 527647931, 527282520, 526916667,
526551763, 526187112, 525822018, 525457872, 525093979, 524729644, 524366255,
524003117, 523640231, 523276904, 522914521, 522552389, 522189817, 521828187,
521466807, 521105678, 520744110, 520383480, 520023101, 519662284, 519302404,
518942774, 518583392, 518223574, 517864691, 517506056, 517146985, 516788847,
516430957, 516073315, 515715239, 515358092, 515001193, 514643861, 514287456,
513931299, 513575388, 513219044, 512863627, 512508455, 512152852, 511798173,
511443739, 511089551, 510734932, 510381235, 510027782, 509673901, 509320938,
508968220, 508615746, 508262844, 507910858, 507559117, 507206948, 506855694,
506504683, 506153915, 505802721, 505452439, 505102400, 504751936, 504402382,
504053070, 503704000, 503354506, 503005920, 502657575, 502308807, 501960945,
501613323, 501265280, 500918141, 500571242, 500224583, 499877503, 499531325,
499185386, 498839027, 498493568, 498148348, 497803367, 497457967, 497113465,
496769200, 496424518, 496080731, 495737182, 495393871, 495050143, 494707308,
494364710, 494021696, 493679573, 493337687, 492996037, 492653973, 492312797,
491971857, 491630504, 491290037, 490949805, 490609809, 490269401, 489929876,
489590587, 489250886, 488912067, 488573482, 488235132, 487896371, 487558490,
487220843, 486882786, 486545606, 486208661, 485871948, 485534827, 485198581,
484862569, 484526148, 484190601, 483855286, 483520203, 483184714, 482850096,
482515709, 482180917, 481846994, 481513302, 481179205, 480845976, 480512977,
480180209, 479847037, 479514730, 479182654, 478850174, 478518557, 478187171,
477856013, 477524454, 477193756, 476863286, 476532416, 476202404, 475872622,
475543067, 475213113, 474884015, 474555145, 474225876, 473897462, 473569276,
473241317, 472912959, 472585454, 472258176, 471930501, 471603677, 471277079,
470950707, 470623939, 470298019, 469972325, 469646236, 469320994, 468995977,
468671184, 468345998, 468021656, 467697539, 467373028, 467049359, 466725915,
466402695, 466079083, 465756311, 465433762, 465110822, 464788720, 464466842,
464145186, 463823140, 463501930, 463180943, 462859566, 462539024, 462218703,
461898604, 461578117, 461258462, 460939028, 460619207, 460300216, 459981446,
459662289, 459343960, 459025852, 458707965, 458389691, 458072244, 457755017,
457437405, 457120617, 456804049, 456487700, 456170967, 455855057, 455539365,
455223290, 454908036, 454593000, 454278182, 453962983, 453648601, 453334438,
453019893, 452706164, 452392653, 452079359, 451765685, 451452825, 451140182,
450827160, 450514950, 450202956, 449891179, 449579023, 449267678, 448956548,
448645040, 448334342, 448023858, 447713590, 447402945, 447093107, 446783483,
446473483, 446164288, 445855308, 445546541, 445237400, 444929061, 444620936,
444312437, 444004738, 443697253, 443389981, 443082336, 442775490, 442468856,
442161850, 441855641, 441549645, 441243276, 440937704, 440632343, 440327193,
440021673, 439716946, 439412431, 439107545, 438803452, 438499569, 438195896,
437891855, 437588603, 437285562, 436982152, 436679530, 436377118, 436074915,
435772346, 435470562, 435168987, 434867046, 434565889, 434264941, 433964201,
433663096, 433362772, 433062657, 432762178, 432462478, 432162987, 431863702,
431564055, 431265185, 430966523, 430667498, 430369249, 430071207, 429773371,
429475174, 429177751, 428880534, 428582956, 428286151, 427989552, 427693157,
427396403, 427100420, 426804642, 426508504, 426213136, 425917972, 425623013,
425327695, 425033144, 424738798, 424444094, 424150155, 423856420, 423562888,
423269000, 422975875, 422682953, 422389675, 422097159, 421804845, 421512177,
421220269, 420928563, 420637058, 420345200, 420054100, 419763202, 419471950,
419181454, 418891160, 418601067, 418310622, 418020930, 417731440, 417441598,
417152508, 416863619, 416574930, 416285891, 415997602, 415709512, 415421073,
415133383, 414845892, 414558600, 414270960, 413984066, 413697371, 413410328,
413124031, 412837931, 412552030, 412265782, 411980277, 411694970, 411409316,
411124404, 410839690, 410555172, 410270309, 409986186, 409702260, 409417989,
409134456, 408851120, 408567980, 408284496, 408001748, 407719196, 407436301,
407154140, 406872175, 406590406, 406308294, 406026914, 405745730, 405464204,
405183410, 404902809, 404621868, 404341657, 404061640, 403781816, 403501653,
403222218, 402942976, 402663395, 402384540, 402105878, 401827409, 401548602,
401270518, 400992628, 400714400, 400436895, 400159582, 399882461, 399605003,
399328266, 399051721, 398774839, 398498677, 398222706, 397946927, 397670812,
397395415, 397120208, 396844667, 396569841, 396295206, 396020761, 395745983,
395471919, 395198044, 394923836, 394650341, 394377035, 394103919, 393830471,
393557733, 393285184, 393012304, 392740132, 392468149, 392196355, 391924230,
391652812, 391381582, 391110023, 390839169, 390568502, 390298023, 390027216,
389757112, 389487195, 389216950, 388947407, 388678050, 388408881, 388139384,
387870587, 387601977, 387333040, 387064801, 386796749, 386528371, 386260690,
385993194, 385725883, 385458248, 385191308, 384924553, 384657474, 384391089,
384124887, 383858871, 383592531, 383326883, 383061419, 382795633, 382530537,
382265624, 382000895, 381735845, 381471483, 381207303, 380942804, 380678991,
380415360, 380151913, 379888145, 379625062, 379362162, 379098943, 378836406,
378574052, 378311880, 378049389, 377787580, 377525952, 377264006, 377002741,
376741656, 376480753, 376219533, 375958991, 375698629, 375437951, 375177951,
374918130, 374658489, 374398533, 374139252, 373880151, 373620735, 373361993,
373103430, 372844553, 372586348, 372328322, 372070475, 371812315, 371554825,
371297513, 371039889, 370782934, 370526157, 370269558, 370012648, 369756404,
369500338, 369243961, 368988250, 368732715, 368477358, 368221691, 367966688,
367711861, 367456725, 367202252, 366947954, 366693833, 366439403, 366185634,
365932041, 365678140, 365424898, 365171832, 364918941, 364665743, 364413202,
364160836, 363908164, 363656148, 363404306, 363152639, 362900667, 362649348,
362398204, 362146755, 361895959, 361645336, 361394887, 361144134, 360894032,
360644103, 360393871, 360144289, 359894880, 359645643, 359396104, 359147212,
358898493, 358649472, 358401098, 358152896, 357904865, 357656534, 357408847,
357161332, 356913517, 356666345, 356419344, 356172514, 355925384, 355678897,
355432580, 355185964, 354939988, 354694182, 354448547, 354202614, 353957319,
353712195, 353466772, 353221987, 352977371, 352732459, 352488182, 352244075,
352000137, 351755902, 351512302, 351268870, 351025143, 350782049, 350539123,
350296365, 350053313, 349810892, 349568639, 349326091, 349084174, 348842424,
348600841, 348358965, 348117717, 347876636, 347635263, 347394516, 347153937,
346913523, 346672818, 346432738, 346192824, 345952619, 345713038, 345473622,
345234373, 344994832, 344755914, 344517162, 344278119, 344039698, 343801441,
343563349, 343324969, 343087207, 342849610, 342611725, 342374457, 342137354,
341899962, 341663188, 341426577, 341190130, 340953396, 340717277, 340481321,
340245079, 340009450, 339773984, 339538682, 339303094, 339068117, 338833304,
338598205, 338363717, 338129391, 337895227, 337660780, 337426941, 337193263,
336959303, 336725949, 336492758, 336259728, 336026415, 335793707, 335561161,
335328333, 335096109, 334864046, 334632144, 334399960, 334168380, 333936959,
333705258, 333474158, 333243218, 333012438, 332781379, 332550919, 332320618,
332090038, 331860057, 331630235, 331400573, 331170631, 330941287, 330712101,
330482637, 330253769, 330025060, 329796509, 329567680, 329339446, 329111369,
328883016, 328655256, 328427654, 328200209, 327972488, 327745358, 327518386,
327291138, 327064480, 326837979, 326611635, 326385017, 326158986, 325933113,
325706965, 325481404, 325255999, 325030751, 324805229, 324580293, 324355513,
324130459, 323905990, 323681677, 323457091, 323233088, 323009241, 322785548,
322561584, 322338202, 322114974, 321891476, 321668557, 321445793, 321223183,
321000303, 320778002, 320555855, 320333438, 320111599, 319889913, 319668381,
319446579, 319225354, 319004282, 318782942, 318562176, 318341563, 318121103,
317900376, 317680221, 317460219, 317239950, 317020253, 316800708, 316581315,
316361656, 316142567, 315923630, 315704427, 315485794, 315267311, 315048981,
314830385, 314612356, 314394479, 314176337, 313958761, 313741337, 313523648,
313306525, 313089551, 312872729, 312655643, 312439120, 312222748, 312006113,
311790040, 311574117, 311358344, 311142309, 310926835, 310711510, 310495923,
310280896, 310066019, 309851290, 309636300, 309421869, 309207586, 308993043,
308779057, 308565219, 308351530, 308137581, 307924187, 307710942, 307497437,
307284487, 307071684, 306859029, 306646116, 306433755, 306221542, 306009071,
305797151, 305585378, 305373753, 305161870, 304950537, 304739351, 304527908,
304317014, 304106267, 303895665, 303684808, 303474498, 303264334, 303053915,
302844042, 302634314, 302424732, 302214895, 302005603, 301796456, 301587056,
301378199, 301169486, 300960918, 300752097, 300543819, 300335684, 300127297,
299919451, 299711748, 299504190, 299296380, 299089109, 298881982, 298674603,
298467763, 298261067, 298054513, 297847708, 297641441, 297435316, 297228942,
297023103, 296817406, 296611460, 296406049, 296200780, 295995653, 295790277,
295585435, 295380734, 295175785, 294971367, 294767092, 294562958, 294358576,
294154725, 293951015, 293747058, 293543630, 293340343, 293137197, 292933805,
292730940, 292528217, 292325247, 292122804, 291920501, 291718338, 291515930,
291314047, 291112305, 290910317, 290708854, 290507530, 290306346, 290104918,
289904013, 289703246, 289502236, 289301748, 289101399, 288901189, 288700736,
288500803, 288301008, 288100971, 287901454, 287702074, 287502453, 287303350,
287104385, 286905557, 286706488, 286507937, 286309522, 286110867, 285912728,
285714725, 285516860, 285318755, 285121164, 284923710, 284726017, 284528837,
284331793, 284134885, 283937739, 283741105, 283544606, 283347870, 283151644,
282955554, 282759600, 282563407, 282367725, 282172178, 281976393, 281781117,
281585976, 281390970, 281195728, 281000992, 280806392, 280611555, 280417224,
280223028, 280028966, 279834668, 279640875, 279447217, 279253323, 279059933,
278866676, 278673554, 278480197, 278287342, 278094620, 277901665, 277709211,
277516890, 277324702, 277132281, 276940359, 276748571, 276556549, 276365027,
276173637, 275982379, 275790889, 275599897, 275409037, 275217945, 275027349,
274836885, 274646553, 274455990, 274265922, 274075986, 273885819, 273696146,
273506604, 273317193, 273127553, 272938405, 272749388, 272560141, 272371386,
272182762, 271993908, 271805545, 271617313, 271429211, 271240880, 271053039,
270865327, 270677388, 270489937, 270302615, 270115423, 269928004, 269741072,
269554269, 269367240, 269180696, 268994281, 268807995, 268621484};
#define MUL_DRC_BAND 4
static PLATFORM_INLINE WORD32 ixheaacd_div_by_30(WORD32 op) {
WORD32 ret;
WORD64 temp;
temp = (WORD64)op * 35791394;
ret = (WORD32)((temp + 17895697) >> 30);
return ret;
}
static PLATFORM_INLINE WORD32 ixheaacd_div_by_15(WORD64 op) {
WORD32 ret;
WORD64 temp;
temp = (WORD64)op * 71582788;
ret = (WORD32)((temp + 134217728) >> 30);
return ret;
}
static VOID ixheaacd_copy_drc_data(ixheaac_drc_data_struct *ch_data,
ixheaac_drc_bs_data_struct *ptr_bs_data,
WORD32 frame_size) {
WORD32 band_num;
ch_data->n_drc_bands = ptr_bs_data->drc_num_bands;
if (ch_data->n_drc_bands == 1) {
ch_data->n_mdct_bands[0] = frame_size;
ch_data->drc_fac[0] = ptr_bs_data->dyn_rng_dlbl[0];
ch_data->drc_fac_dvb[0] = ptr_bs_data->dyn_rng_dlbl_dvb[0];
} else {
for (band_num = 0; band_num < ptr_bs_data->drc_num_bands; band_num++) {
ch_data->n_mdct_bands[band_num] =
(ptr_bs_data->drc_band_top[band_num] + 1) * MUL_DRC_BAND;
ch_data->drc_fac[band_num] = ptr_bs_data->dyn_rng_dlbl[band_num];
ch_data->drc_fac_dvb[band_num] = ptr_bs_data->dyn_rng_dlbl_dvb[band_num];
}
}
ch_data->drc_interp_scheme = ptr_bs_data->drc_interpolation_scheme;
}
WORD32 ixheaacd_drc_map_channels(ia_drc_dec_struct *pstr_drc_dec,
WORD32 num_channels, WORD32 frame_size) {
WORD32 i, element;
WORD32 num_drc_elements;
ixheaac_drc_bs_data_struct *ptr_bs_data;
num_drc_elements = pstr_drc_dec->num_drc_elements;
if (num_drc_elements == 0) {
return IA_NO_ERROR;
}
if (num_drc_elements == 1) {
}
if (num_drc_elements > 1) {
for (i = 0; i < num_channels; i++) {
WORD32 drc_on = 0;
for (element = 0; element < num_drc_elements; element++) {
ptr_bs_data = &pstr_drc_dec->str_drc_bs_data[element];
if (ptr_bs_data->b_channel_on[i]) drc_on++;
}
if (drc_on > 1) {
return IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_DRC_DATA;
}
}
}
for (element = 0; element < num_drc_elements; element++) {
ptr_bs_data = &pstr_drc_dec->str_drc_bs_data[element];
if (ptr_bs_data->prog_ref_level_present)
pstr_drc_dec->prog_ref_level = ptr_bs_data->prog_ref_level;
for (i = 0; i < num_channels; i++) {
if (!ptr_bs_data->b_channel_on[i]) continue;
ixheaacd_copy_drc_data(&pstr_drc_dec->str_drc_channel_data[i],
&pstr_drc_dec->str_drc_bs_data[element],
frame_size);
}
}
return IA_NO_ERROR;
}
VOID ixheaacd_drc_dec_create(ia_drc_dec_struct *pstr_drc_dec,
WORD16 drc_ref_level, WORD16 drc_def_level) {
WORD32 j, k;
WORD32 ch;
pstr_drc_dec->sbr_allowed = 1;
pstr_drc_dec->sbr_found = 0;
pstr_drc_dec->drc_element_found = 0;
pstr_drc_dec->max_audio_channels = MAX_BS_ELEMENT;
pstr_drc_dec->drc_ref_level = drc_ref_level;
pstr_drc_dec->drc_def_level = drc_def_level;
pstr_drc_dec->num_drc_elements = 0;
pstr_drc_dec->target_ref_level = 108;
pstr_drc_dec->prog_ref_level = 108;
pstr_drc_dec->cut_factor = 0;
pstr_drc_dec->boost_factor = 0;
pstr_drc_dec->drc_on = 0;
pstr_drc_dec->drc_dig_norm = 1;
pstr_drc_dec->pres_mode = -1;
pstr_drc_dec->length_history = 2;
if (pstr_drc_dec->sbr_allowed) pstr_drc_dec->length_history++;
for (ch = 0; ch < MAX_BS_ELEMENT; ch++) {
ixheaac_drc_data_struct *pstr_drc_data =
(ixheaac_drc_data_struct *)&pstr_drc_dec->str_drc_channel_data[ch];
pstr_drc_dec->drc_channel_next_index[ch] = 0;
pstr_drc_dec->state = 0;
for (j = 0; j < 64; j++)
for (k = 0; k < 64; k++)
pstr_drc_data->drc_factors_sbr[j][k] = DRC_SBR_ONE_Q25;
for (j = 0; j < MAX_DRC_BANDS; j++) pstr_drc_data->drc_fac[j] = 0;
pstr_drc_data->n_mdct_bands[0] = FRAME_SIZE;
pstr_drc_data->drc_exp = 1;
pstr_drc_data->short_block = 0;
pstr_drc_data->drc_interp_scheme = 0;
pstr_drc_data->n_drc_bands = 1;
pstr_drc_data->new_prog_ref_level = 0;
pstr_drc_data->new_drc_fac = 0;
}
}
static WORD32 ixheaacd_drc_excluded_channels(ia_handle_bit_buf_struct bs,
WORD32 nch, UWORD8 *b_channel_on) {
WORD32 ich, nbyte = 0;
WORD32 num_excl_chan;
UWORD8 exclude_mask;
num_excl_chan = 7;
for (ich = 0; ich < 7; ich++) {
exclude_mask = ixheaacd_read_bits_buf(bs, 1);
if (ich < nch) {
b_channel_on[ich] = !exclude_mask;
}
}
nbyte++;
while (ixheaacd_read_bits_buf(bs, 1)) {
for (ich = num_excl_chan; ich < num_excl_chan + 7; ich++) {
exclude_mask = ixheaacd_read_bits_buf(bs, 1);
if (ich < nch) {
b_channel_on[ich] = !exclude_mask;
}
}
nbyte++;
num_excl_chan += 7;
}
return nbyte;
}
static WORD32 ixheaacd_drc_element_read(
ia_handle_bit_buf_struct bs, ixheaac_drc_bs_data_struct *pstr_bs_data) {
WORD32 ich, idrc, nbyte = 1;
WORD32 pce_tag_present, drc_bands_present;
WORD32 pce_instance_tag, drc_tag_reserved_bits;
WORD32 prog_ref_level_reserved_bits;
WORD32 excluded_chns_present;
UWORD8 drc_band_incr;
WORD8 max_dyn_rng_dlbl = -128;
pstr_bs_data->drc_num_bands = 1;
pce_tag_present = ixheaacd_read_bits_buf(bs, 1);
if (pce_tag_present) {
pce_instance_tag = ixheaacd_read_bits_buf(bs, 4);
drc_tag_reserved_bits = ixheaacd_read_bits_buf(bs, 4);
nbyte++;
}
for (ich = 0; ich < MAX_AUDIO_CHANNELS; ich++) {
pstr_bs_data->b_channel_on[ich] = 1;
}
excluded_chns_present = ixheaacd_read_bits_buf(bs, 1);
if (excluded_chns_present) {
nbyte += ixheaacd_drc_excluded_channels(bs, MAX_AUDIO_CHANNELS,
pstr_bs_data->b_channel_on);
}
drc_bands_present = ixheaacd_read_bits_buf(bs, 1);
if (drc_bands_present) {
drc_band_incr = ixheaacd_read_bits_buf(bs, 4);
pstr_bs_data->drc_interpolation_scheme = ixheaacd_read_bits_buf(bs, 4);
nbyte++;
pstr_bs_data->drc_num_bands += drc_band_incr;
for (idrc = 0; idrc < pstr_bs_data->drc_num_bands; idrc++) {
pstr_bs_data->drc_band_top[idrc] = ixheaacd_read_bits_buf(bs, 8);
nbyte++;
}
} else {
pstr_bs_data->drc_band_top[0] = FRAME_SIZE / 4 - 1;
pstr_bs_data->drc_interpolation_scheme = 0;
}
pstr_bs_data->prog_ref_level_present = ixheaacd_read_bits_buf(bs, 1);
if (pstr_bs_data->prog_ref_level_present) {
pstr_bs_data->prog_ref_level = ixheaacd_read_bits_buf(bs, 7);
prog_ref_level_reserved_bits = ixheaacd_read_bits_buf(bs, 1);
nbyte++;
}
for (idrc = 0; idrc < pstr_bs_data->drc_num_bands; idrc++) {
WORD32 sign = ixheaacd_read_bits_buf(bs, 1);
pstr_bs_data->dyn_rng_dlbl[idrc] = ixheaacd_read_bits_buf(bs, 7);
if (sign)
pstr_bs_data->dyn_rng_dlbl[idrc] = -pstr_bs_data->dyn_rng_dlbl[idrc];
max_dyn_rng_dlbl = max(max_dyn_rng_dlbl, pstr_bs_data->dyn_rng_dlbl[idrc]);
nbyte++;
}
pstr_bs_data->max_dyn_rng_dlbl = max_dyn_rng_dlbl;
return nbyte;
}
static int ixheaacd_drc_read_compression(ia_handle_bit_buf_struct bs,
ia_drc_dec_struct *pstr_drc_dec,
WORD32 bs_pos) {
int bit_count = 0;
int dmx_lvl_present, ext_present, compression_present;
int coarse_gain_present, fine_grain_present;
ia_bit_buf_struct local_bs = {0};
WORD32 bytes = 0, bits = 0;
memcpy(&local_bs, bs, sizeof(ia_bit_buf_struct));
if (local_bs.size < bs_pos) {
longjmp(*(local_bs.xaac_jmp_buf),
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
bytes = (local_bs.size - bs_pos) >> 3;
bits = (local_bs.size - bs_pos) % 8;
local_bs.cnt_bits = bs_pos;
local_bs.ptr_read_next = local_bs.ptr_bit_buf_base;
local_bs.ptr_read_next += bytes;
local_bs.bit_pos = 7 - bits;
if (ixheaacd_read_bits_buf(&local_bs, 8) != DVB_ANC_DATA_SYNC_BYTE) {
return 0;
}
if (ixheaacd_read_bits_buf(&local_bs, 2) != 3) return 0;
ixheaacd_read_bits_buf(&local_bs, 2);
pstr_drc_dec->pres_mode = ixheaacd_read_bits_buf(&local_bs, 2);
ixheaacd_read_bits_buf(&local_bs, 1);
if (ixheaacd_read_bits_buf(&local_bs, 1) != 0) return 0;
if (ixheaacd_read_bits_buf(&local_bs, 3) != 0) return 0;
dmx_lvl_present = ixheaacd_read_bits_buf(&local_bs, 1);
ext_present = ixheaacd_read_bits_buf(&local_bs, 1);
compression_present = ixheaacd_read_bits_buf(&local_bs, 1);
coarse_gain_present = ixheaacd_read_bits_buf(&local_bs, 1);
fine_grain_present = ixheaacd_read_bits_buf(&local_bs, 1);
bit_count += 24;
if (dmx_lvl_present) {
ixheaacd_read_bits_buf(&local_bs, 8);
bit_count += 8;
}
if (compression_present) {
UWORD8 compression_on, compression_val;
if (ixheaacd_read_bits_buf(&local_bs, 7) != 0) return 0;
compression_on = (UWORD8)ixheaacd_read_bits_buf(&local_bs, 1);
compression_val = (UWORD8)ixheaacd_read_bits_buf(&local_bs, 8);
bit_count += 16;
if (compression_on) {
pstr_drc_dec->str_drc_bs_data[0].drc_num_bands = 1;
pstr_drc_dec->str_drc_bs_data[0].dyn_rng_dlbl_dvb[0] = compression_val;
pstr_drc_dec->str_drc_bs_data[0].drc_band_top[0] = (1024 >> 2) - 1;
pstr_drc_dec->drc_ref_level = -1;
pstr_drc_dec->str_drc_bs_data[0].drc_data_type = DVB_DRC_ANC_DATA;
} else {
pstr_drc_dec->str_drc_bs_data[0].drc_num_bands = 1;
pstr_drc_dec->str_drc_bs_data[0].dyn_rng_dlbl_dvb[0] = (WORD8)0x80;
pstr_drc_dec->str_drc_bs_data[0].drc_band_top[0] = (1024 >> 2) - 1;
pstr_drc_dec->str_drc_bs_data[0].drc_data_type = DVB_DRC_ANC_DATA;
if (compression_val != 0) return 0;
}
}
if (coarse_gain_present) {
ixheaacd_read_bits_buf(&local_bs, 16);
bit_count += 16;
}
if (fine_grain_present) {
ixheaacd_read_bits_buf(&local_bs, 16);
bit_count += 16;
}
if (ext_present) {
int ext_bits = 8;
ixheaacd_read_bits_buf(&local_bs, 1);
if (ixheaacd_read_bits_buf(&local_bs, 1)) ext_bits += 8;
if (ixheaacd_read_bits_buf(&local_bs, 1)) ext_bits += 16;
if (ixheaacd_read_bits_buf(&local_bs, 1)) ext_bits += 8;
ixheaacd_read_bits_buf(&local_bs, ext_bits - 4);
bit_count += ext_bits;
}
return (bit_count);
}
WORD32 ixheaacd_dec_drc_read_element(ia_drc_dec_struct *pstr_drc_dec,
ia_drc_dec_struct *drc_dummy,
ia_handle_bit_buf_struct bs) {
WORD32 bits_read = 0;
WORD32 bits_parse = 0;
if (pstr_drc_dec->num_drc_elements < pstr_drc_dec->max_audio_channels) {
bits_read = ixheaacd_drc_element_read(
bs, &pstr_drc_dec->str_drc_bs_data[pstr_drc_dec->num_drc_elements]);
if (pstr_drc_dec->dvb_anc_data_present) {
bits_parse = ixheaacd_drc_read_compression(
bs, pstr_drc_dec, pstr_drc_dec->dvb_anc_data_pos);
}
pstr_drc_dec->num_drc_elements++;
} else {
ixheaac_drc_bs_data_struct drc_ele_dummy;
bits_read = ixheaacd_drc_element_read(bs, &drc_ele_dummy);
if (pstr_drc_dec->dvb_anc_data_present) {
bits_parse = ixheaacd_drc_read_compression(
bs, drc_dummy, pstr_drc_dec->dvb_anc_data_pos);
}
}
pstr_drc_dec->dvb_anc_data_present = 0;
return bits_read;
}
static const WORD32 ixheaacd_drc_offset[2][16] = {
{0, 4, 8, 12, 16, 20, 24, 28, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 4, 8, 12, 16, 19, 22, 26, 0, 0, 0, 0, 0, 0, 0, 0}};
WORD32 ixheaacd_get_div_value_24(WORD32 value) {
WORD32 ret;
WORD64 temp;
temp = (WORD64)value * 44739243;
ret = (WORD32)((temp + 22369621) >> 30);
return ret;
}
WORD32 ixheaacd_get_div_value_2400(WORD32 value) {
WORD32 ret;
WORD64 temp;
temp = (WORD64)value * 447392;
ret = (WORD32)((temp + 223696) >> 30);
return ret;
}
static WORD32 ixheaacd_drc_div_120_floor(WORD32 value) {
WORD32 ret_val;
WORD64 temp;
temp = (WORD64)value * 8947849;
ret_val = (WORD32)(temp >> 30);
return ret_val;
}
static WORD32 ixheaacd_drc_floor(WORD32 bottom, WORD32 frame_size) {
WORD32 ret_val;
if (960 == frame_size) {
ret_val = ixheaacd_drc_div_120_floor(bottom);
ret_val *= 30;
ret_val = ret_val >> 3;
} else {
ret_val = bottom >> 7;
ret_val = ret_val << 2;
}
return ret_val;
}
static WORD32 ixheaacd_drc_ceil(WORD32 top, WORD32 frame_size) {
WORD32 ret_val;
if (960 == frame_size) {
top += 119;
ret_val = ixheaacd_drc_div_120_floor(top);
ret_val *= 30;
ret_val = ret_val >> 3;
} else {
top += 127;
ret_val = top >> 7;
ret_val = ret_val << 2;
}
return ret_val;
}
static WORD32 ixheaacd_drc_get_bottom_qmf(WORD32 bottom, WORD32 frame_size) {
WORD32 ret_val;
if (960 == frame_size) {
ret_val = bottom % 120;
ret_val = ret_val << 5;
ret_val = ixheaacd_drc_div_120_floor(ret_val);
} else {
ret_val = bottom & 0x7F;
ret_val = ret_val >> 2;
}
return ret_val;
};
VOID ixheaacd_drc_apply(ia_drc_dec_struct *pstr_drc_dec,
WORD32 *ptr_spectral_coef, WORD32 win_seq,
WORD32 channel, WORD32 frame_size) {
WORD32 drc_band, spec_pos, start_pos, end_pos;
WORD32 low_hi, drc_norm, drc_freq_fac;
WORD32 drc_fac, div_val, mod_val, ret_val, offset_value;
WORD32 *table;
ixheaac_drc_data_struct *pstr_drc_data;
WORD32 num_qmf_sub_sample = (frame_size >> 5);
WORD32 num_qmf_sub_sample_by_2 = (frame_size >> 6);
WORD32 diff_ref_level;
WORD32 *drc_sbr_factors[64];
WORD32 qmf_start_pos, qmf_stop_pos, qmf_start, i, j;
WORD32 prev_frame_drc_sbr_factors[64];
WORD32 *ptr_drc_fac;
ptr_drc_fac =
&pstr_drc_dec->str_drc_channel_data[channel].drc_factors_sbr[0][0];
for (i = 0; i < 64; i++) {
drc_sbr_factors[i] = ptr_drc_fac;
ptr_drc_fac += 64;
}
memcpy(prev_frame_drc_sbr_factors,
drc_sbr_factors[2 * num_qmf_sub_sample - 1], 64 * sizeof(WORD32));
pstr_drc_data = &pstr_drc_dec->str_drc_channel_data[channel];
if (!pstr_drc_dec->drc_on) return;
if (pstr_drc_dec->drc_dig_norm) {
diff_ref_level =
pstr_drc_dec->target_ref_level - pstr_drc_dec->prog_ref_level;
if (diff_ref_level < 0) {
diff_ref_level = -diff_ref_level;
table = ixheaacd_drc_pow_tbl_2_q29;
div_val = ixheaacd_get_div_value_24(diff_ref_level);
drc_norm = 1 << (25 + div_val);
mod_val = diff_ref_level - (div_val * 24);
diff_ref_level = mod_val * 1000;
} else {
table = ixheaacd_drc_pow_tbl_1_2_q29;
div_val = ixheaacd_get_div_value_24(diff_ref_level);
drc_norm = 1 << (25 - div_val);
mod_val = diff_ref_level - (div_val * 24);
diff_ref_level = mod_val * 1000;
}
ret_val = ixheaacd_get_div_value_24(diff_ref_level);
drc_norm = ixheaacd_mult32x16in32_shift29(drc_norm, table[ret_val]);
} else {
drc_norm = (1 << 25);
}
start_pos = 0;
for (drc_band = 0; drc_band < pstr_drc_data->n_drc_bands; drc_band++) {
if ((pstr_drc_dec->str_drc_bs_data[0].drc_data_type == DVB_DRC_ANC_DATA) &&
(pstr_drc_dec->heavy_mode)) {
int val_x, val_y;
float compression_factor;
float temp;
val_x = ((UWORD8)pstr_drc_data->drc_fac_dvb[drc_band]) >> 4;
val_y = ((UWORD8)pstr_drc_data->drc_fac_dvb[drc_band]) & 0x0F;
compression_factor = (FLOAT32)(48.164 - 6.0206 * val_x - 0.4014 * val_y);
temp = (FLOAT32)(pow(10, (float)compression_factor / 20.0));
drc_freq_fac = (WORD32)(temp * 33554431);
} else {
if (pstr_drc_data->drc_fac[drc_band] < 0) {
low_hi = pstr_drc_dec->cut_factor;
} else {
low_hi = pstr_drc_dec->boost_factor;
}
{
drc_fac =
pstr_drc_dec->str_drc_channel_data[channel].drc_fac[drc_band] *
low_hi;
if (drc_fac < 0) {
drc_fac *= -1;
table = ixheaacd_drc_pow_tbl_1_2_q29;
div_val = ixheaacd_get_div_value_2400(drc_fac);
drc_freq_fac = 1 << (25 - div_val);
mod_val = drc_fac - (div_val * 2400);
drc_fac = mod_val * 10;
} else {
table = ixheaacd_drc_pow_tbl_2_q29;
div_val = ixheaacd_get_div_value_2400(drc_fac);
drc_freq_fac = 1 << (25 + div_val);
mod_val = drc_fac - (div_val * 2400);
drc_fac = mod_val * 10;
}
ret_val = ixheaacd_get_div_value_24(drc_fac);
drc_freq_fac =
ixheaacd_mult32x16in32_shift29(drc_freq_fac, table[ret_val]);
drc_freq_fac = ixheaacd_mult32x16in32_shift25(drc_freq_fac, drc_norm);
}
}
end_pos = pstr_drc_data->n_mdct_bands[drc_band];
if (!pstr_drc_dec->sbr_found) {
for (spec_pos = start_pos; spec_pos < end_pos; spec_pos++) {
ptr_spectral_coef[spec_pos] = ixheaacd_mult32x16in32_shift25(
ptr_spectral_coef[spec_pos], drc_freq_fac);
}
}
if (pstr_drc_dec->sbr_found) {
if (win_seq != EIGHT_SHORT_SEQUENCE) {
if (960 == frame_size) {
qmf_start = ixheaacd_div_by_30(start_pos);
offset_value = 1;
} else {
qmf_start = start_pos >> 5;
offset_value = 0;
}
for (j = -num_qmf_sub_sample_by_2; j < num_qmf_sub_sample; j++) {
WORD32 alpha_val = 0;
if (j + num_qmf_sub_sample_by_2 < num_qmf_sub_sample) {
if (pstr_drc_data->drc_interp_scheme == 0) {
alpha_val = (j + num_qmf_sub_sample_by_2);
for (i = qmf_start; i < 64; i++) {
WORD64 temp_drc = (WORD64)alpha_val * drc_freq_fac +
(num_qmf_sub_sample - alpha_val) *
(WORD64)prev_frame_drc_sbr_factors[i];
if (frame_size == 512) {
drc_sbr_factors[num_qmf_sub_sample + j][i] =
(WORD32)(temp_drc >> 4);
} else if (frame_size == 480) {
drc_sbr_factors[num_qmf_sub_sample + j][i] =
ixheaacd_div_by_15(temp_drc);
} else {
drc_sbr_factors[num_qmf_sub_sample + j][i] =
(WORD32)(temp_drc >> 5);
}
if (960 == frame_size) {
drc_sbr_factors[num_qmf_sub_sample + j][i] =
ixheaacd_div_by_30(
drc_sbr_factors[num_qmf_sub_sample + j][i]);
}
}
} else {
if (j + num_qmf_sub_sample_by_2 >=
ixheaacd_drc_offset[offset_value]
[pstr_drc_data->drc_interp_scheme - 1]) {
alpha_val = 1;
for (i = qmf_start; i < 64; i++) {
drc_sbr_factors[num_qmf_sub_sample + j][i] = drc_freq_fac;
}
} else {
alpha_val = 0;
for (i = qmf_start; i < 64; i++) {
drc_sbr_factors[num_qmf_sub_sample + j][i] =
prev_frame_drc_sbr_factors[i];
}
}
}
} else {
alpha_val = 1;
for (i = qmf_start; i < 64; i++) {
drc_sbr_factors[num_qmf_sub_sample + j][i] = drc_freq_fac;
}
}
}
} else {
qmf_start_pos = ixheaacd_drc_floor(start_pos, frame_size);
qmf_stop_pos = ixheaacd_drc_ceil(end_pos, frame_size);
qmf_start = ixheaacd_drc_get_bottom_qmf(start_pos, frame_size);
for (j = qmf_start_pos; j < qmf_stop_pos; j++) {
if (j > qmf_start_pos && ((j & 0x03) == 0)) {
qmf_start = 0;
}
for (i = qmf_start; i < 64; i++) {
drc_sbr_factors[num_qmf_sub_sample + j][i] = drc_freq_fac;
}
}
}
}
start_pos = end_pos;
}
if (win_seq != EIGHT_SHORT_SEQUENCE) {
pstr_drc_data->prev_interp_scheme = pstr_drc_data->drc_interp_scheme;
} else {
pstr_drc_data->prev_interp_scheme = 8;
}
}