12228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 22228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* ----------------------------------------------------------------------------------------------------------- 32228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSoftware License for The Fraunhofer FDK AAC Codec Library for Android 42228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 52228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project� Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 62228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project All rights reserved. 72228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 82228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. INTRODUCTION 92228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 112228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is intended to be used on a wide variety of Android devices. 122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 132228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectaudio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindependent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof the MPEG specifications. 172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectPatent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmay be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindividually for the purpose of encoding or decoding bit streams in products that are compliant with 212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthese patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware may already be covered under those patent licenses when it is used for those licensed purposes only. 242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCommercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectare also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectapplications information and documentation. 282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project2. COPYRIGHT LICENSE 302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 312228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectRedistribution and use in source and binary forms, with or without modification, are permitted without 322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectpayment of copyright license fees provided that you satisfy the following conditions: 332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 342228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in redistributions of the FDK AAC Codec or 352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectyour modifications thereto in source code form. 362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 372228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in the documentation and/or other materials 382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprovided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 392228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must make available free of charge copies of the complete source code of the FDK AAC Codec and your 402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmodifications thereto to recipients of copies in binary form. 412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 422228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe name of Fraunhofer may not be used to endorse or promote products derived from this library without 432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprior written permission. 442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 452228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware or your modifications thereto. 472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 482228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYour modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectand the date of any change. For modified versions of the FDK AAC Codec, the term 502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project3. NO PATENT LICENSE 542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectNO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 562228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectrespect to this software. 582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 592228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectby appropriate patent licenses. 612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project4. DISCLAIMER 632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 642228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 672228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectincluding but not limited to procurement of substitute goods or services; loss of use, data, or profits, 692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projector business interruption, however caused and on any theory of liability, whether in contract, strict 702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectliability, or tort (including negligence), arising in any way out of the use of this software, even if 712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectadvised of the possibility of such damage. 722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project5. CONTACT INFORMATION 742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 752228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFraunhofer Institute for Integrated Circuits IIS 762228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAttention: Audio and Multimedia Departments - FDK AAC LL 772228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAm Wolfsmantel 33 782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project91058 Erlangen, Germany 792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectwww.iis.fraunhofer.de/amm 812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectamm-info@iis.fraunhofer.de 822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------------------- */ 832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************** MPEG Audio Encoder ************************** 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Initial author: 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project contents/description: CRC calculation 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project******************************************************************************/ 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "FDK_crc.h" 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*---------------- constants -----------------------*/ 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/** 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \brief This table defines precalculated lookup tables for crc polynom x^16 + x^15 + x^2 + x^0. 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const USHORT crcLookup_16_15_2_0[256] = 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0000, 0x8005, 0x800f, 0x000a, 0x801b, 0x001e, 0x0014, 0x8011, 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8033, 0x0036, 0x003c, 0x8039, 0x0028, 0x802d, 0x8027, 0x0022, 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8063, 0x0066, 0x006c, 0x8069, 0x0078, 0x807d, 0x8077, 0x0072, 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0050, 0x8055, 0x805f, 0x005a, 0x804b, 0x004e, 0x0044, 0x8041, 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x80c3, 0x00c6, 0x00cc, 0x80c9, 0x00d8, 0x80dd, 0x80d7, 0x00d2, 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x00f0, 0x80f5, 0x80ff, 0x00fa, 0x80eb, 0x00ee, 0x00e4, 0x80e1, 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x00a0, 0x80a5, 0x80af, 0x00aa, 0x80bb, 0x00be, 0x00b4, 0x80b1, 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8093, 0x0096, 0x009c, 0x8099, 0x0088, 0x808d, 0x8087, 0x0082, 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8183, 0x0186, 0x018c, 0x8189, 0x0198, 0x819d, 0x8197, 0x0192, 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x01b0, 0x81b5, 0x81bf, 0x01ba, 0x81ab, 0x01ae, 0x01a4, 0x81a1, 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x01e0, 0x81e5, 0x81ef, 0x01ea, 0x81fb, 0x01fe, 0x01f4, 0x81f1, 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x81d3, 0x01d6, 0x01dc, 0x81d9, 0x01c8, 0x81cd, 0x81c7, 0x01c2, 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0140, 0x8145, 0x814f, 0x014a, 0x815b, 0x015e, 0x0154, 0x8151, 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8173, 0x0176, 0x017c, 0x8179, 0x0168, 0x816d, 0x8167, 0x0162, 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8123, 0x0126, 0x012c, 0x8129, 0x0138, 0x813d, 0x8137, 0x0132, 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0110, 0x8115, 0x811f, 0x011a, 0x810b, 0x010e, 0x0104, 0x8101, 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8303, 0x0306, 0x030c, 0x8309, 0x0318, 0x831d, 0x8317, 0x0312, 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0330, 0x8335, 0x833f, 0x033a, 0x832b, 0x032e, 0x0324, 0x8321, 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0360, 0x8365, 0x836f, 0x036a, 0x837b, 0x037e, 0x0374, 0x8371, 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8353, 0x0356, 0x035c, 0x8359, 0x0348, 0x834d, 0x8347, 0x0342, 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x03c0, 0x83c5, 0x83cf, 0x03ca, 0x83db, 0x03de, 0x03d4, 0x83d1, 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x83f3, 0x03f6, 0x03fc, 0x83f9, 0x03e8, 0x83ed, 0x83e7, 0x03e2, 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x83a3, 0x03a6, 0x03ac, 0x83a9, 0x03b8, 0x83bd, 0x83b7, 0x03b2, 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0390, 0x8395, 0x839f, 0x039a, 0x838b, 0x038e, 0x0384, 0x8381, 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0280, 0x8285, 0x828f, 0x028a, 0x829b, 0x029e, 0x0294, 0x8291, 1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x82b3, 0x02b6, 0x02bc, 0x82b9, 0x02a8, 0x82ad, 0x82a7, 0x02a2, 1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x82e3, 0x02e6, 0x02ec, 0x82e9, 0x02f8, 0x82fd, 0x82f7, 0x02f2, 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x02d0, 0x82d5, 0x82df, 0x02da, 0x82cb, 0x02ce, 0x02c4, 0x82c1, 1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8243, 0x0246, 0x024c, 0x8249, 0x0258, 0x825d, 0x8257, 0x0252, 1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0270, 0x8275, 0x827f, 0x027a, 0x826b, 0x026e, 0x0264, 0x8261, 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0220, 0x8225, 0x822f, 0x022a, 0x823b, 0x023e, 0x0234, 0x8231, 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8213, 0x0216, 0x021c, 0x8219, 0x0208, 0x820d, 0x8207, 0x0202 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}; 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/** 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \brief This table defines precalculated lookup tables for crc polynom x^16 + x^12 + x^5 + x^0. 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const USHORT crcLookup_16_12_5_0[256] = 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}; 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------- function declarations --------------------*/ 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic inline INT calcCrc_Bits( 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT * const pCrc, 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT crcMask, 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT crcPoly, 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM hBs, 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT nBits 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic inline INT calcCrc_Bytes( 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT * const pCrc, 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const USHORT * pCrcLookup, 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM hBs, 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT nBytes 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void crcCalc( 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_CRCINFO hCrcInfo, 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM hBs, 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT reg 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*------------- function definitions ----------------*/ 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid FDKcrcInit( 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_CRCINFO hCrcInfo, 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT crcPoly, 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT crcStartValue, 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT crcLen 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* crc polynom example: 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project x^16 + x^15 + x^2 + x^0 (1) 1000 0000 0000 0101 -> 0x8005 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project x^16 + x^12 + x^5 + x^0 (1) 0001 0000 0010 0001 -> 0x1021 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project x^8 + x^4 + x^3 + x^2 + x^0 (1) 0001 1101 -> 0x001d */ 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcLen = crcLen; 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcPoly = crcPoly; 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->startValue = crcStartValue; 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcMask = (crcLen) ? (1<<(crcLen-1)) : 0; 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKcrcReset(hCrcInfo); 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->pCrcLookup = 0; 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hCrcInfo->crcLen==16) { 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch ( crcPoly ) { 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 0x8005: 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->pCrcLookup = crcLookup_16_15_2_0; 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 0x1021: 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->pCrcLookup = crcLookup_16_12_5_0; 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 0x001d: 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project default: 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* no lookup table */ 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->pCrcLookup = 0; 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid FDKcrcReset(HANDLE_FDK_CRCINFO hCrcInfo) 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i; 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcValue = hCrcInfo->startValue; 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0;i<MAX_CRC_REGS;i++) { 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[i].isActive = 0; 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->regStart = 0; 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->regStop = 0; 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT FDKcrcStartReg( 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_CRCINFO hCrcInfo, 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const HANDLE_FDK_BITSTREAM hBs, 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT mBits 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int reg = hCrcInfo->regStart; 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_ASSERT(hCrcInfo->crcRegData[reg].isActive==0); 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].isActive = 1; 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].maxBits = mBits; 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].validBits = FDKgetValidBits(hBs) ; 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].bitBufCntBits = 0; 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->regStart = (hCrcInfo->regStart+1)%MAX_CRC_REGS; 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (reg); 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT FDKcrcEndReg( 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_CRCINFO hCrcInfo, 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const HANDLE_FDK_BITSTREAM hBs, 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT reg 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_ASSERT((reg==(INT)hCrcInfo->regStop)&&(hCrcInfo->crcRegData[reg].isActive==1)); 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hBs->ConfigCache==BS_WRITER) { 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].bitBufCntBits = FDKgetValidBits(hBs) - hCrcInfo->crcRegData[reg].validBits; 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].bitBufCntBits = hCrcInfo->crcRegData[reg].validBits - FDKgetValidBits(hBs); 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hCrcInfo->crcRegData[reg].maxBits == 0) { 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].maxBits = hCrcInfo->crcRegData[reg].bitBufCntBits; 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project crcCalc( hCrcInfo, hBs, reg); 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcRegData[reg].isActive = 0; 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->regStop = (hCrcInfo->regStop+1)%MAX_CRC_REGS; 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 0; 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectUSHORT FDKcrcGetCRC( 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const HANDLE_FDK_CRCINFO hCrcInfo 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return ( hCrcInfo->crcValue & (((hCrcInfo->crcMask-1)<<1)+1) ); 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/** 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \brief Calculate crc bits. 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * Calculate crc starting at current bitstream postion over nBits. 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param pCrc Pointer to an outlying allocated crc info structure. 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param crcMask CrcMask in use. 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param crcPoly Crc polynom in use. 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param hBs Handle to current bit buffer structure. 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param nBits Number of processing bits. 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \return Number of processed bits. 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic inline INT calcCrc_Bits( 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT * const pCrc, 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT crcMask, 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT crcPoly, 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM hBs, 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT nBits 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i; 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT crc = *pCrc; /* get crc value */ 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hBs!=NULL) { 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; (i < nBits); i++) { 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT tmp = FDKreadBits(hBs,1); // process single bit 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmp ^= ( (crc & crcMask) ? 1 : 0 ); 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmp *= crcPoly; 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project crc <<= 1; 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project crc ^= tmp; 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; (i < nBits); i++) { 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT tmp = 0; // process single bit 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmp ^= ( (crc & crcMask) ? 1 : 0 ); 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmp *= crcPoly; 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project crc <<= 1; 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project crc ^= tmp; 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *pCrc = crc; /* update crc value */ 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return nBits; 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/** 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \brief Calculate crc bytes. 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * Calculate crc starting at current bitstream postion over nBytes. 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param pCrc Pointer to an outlying allocated crc info structure. 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param pCrcLookup Pointer to lookup table used for fast crc calculation. 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param hBs Handle to current bit buffer structure. 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param nBits Number of processing bytes. 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \return Number of processed bits. 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic inline INT calcCrc_Bytes( 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT * const pCrc, 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const USHORT * pCrcLookup, 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM hBs, 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT nBytes 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i; 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT crc = *pCrc; /* get crc value */ 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hBs!=NULL) { 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<nBytes; i++) { 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project crc = (crc<<8)^pCrcLookup[((crc>>8)^((UCHAR)FDKreadBits(hBs,8)))&0xFF]; 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<nBytes; i++) { 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project crc = (crc<<8)^pCrcLookup[((crc>>8)^((UCHAR)0))&0xFF]; 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *pCrc = crc; /* update crc value */ 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (i); 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/** 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \brief Calculate crc. 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * Calculate crc. Lenght depends on mBits parameter in FDKcrcStartReg() configuration. 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param hCrcInfo Pointer to an outlying allocated crc info structure. 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param hBs Pointer to current bit buffer structure. 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \param reg Crc region ID. 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * \return Number of processed bits. 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void crcCalc( 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_CRCINFO hCrcInfo, 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM hBs, 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT reg 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT crc = hCrcInfo->crcValue; 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CCrcRegData *rD = &hCrcInfo->crcRegData[reg]; 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_BITSTREAM bsReader; 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hBs->ConfigCache==BS_READER) { 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bsReader = *hBs; 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKpushBiDirectional(&bsReader, -(INT)(rD->validBits-FDKgetValidBits(&bsReader))); 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKinitBitStream(&bsReader, hBs->hBitBuf.Buffer, hBs->hBitBuf.bufSize, hBs->hBitBuf.ValidBits, BS_READER); 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKpushBiDirectional(&bsReader, rD->validBits); 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int bits, rBits; 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rBits = (rD->maxBits>=0) ? rD->maxBits : -rD->maxBits; /* ramaining bits */ 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((rD->maxBits>0) && (((INT)rD->bitBufCntBits>>3<<3)<rBits) ) { 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bits = rD->bitBufCntBits; 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bits = rBits; 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int words = bits >> 3; /* processing bytes */ 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int mBits = bits & 0x7; /* modulo bits */ 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(hCrcInfo->pCrcLookup) { 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rBits -= (calcCrc_Bytes(&crc, hCrcInfo->pCrcLookup, &bsReader, words)<<3); 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rBits -= calcCrc_Bits(&crc, hCrcInfo->crcMask, hCrcInfo->crcPoly, &bsReader, words<<3 ); 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* remaining valid bits*/ 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(mBits!=0) { 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rBits -= calcCrc_Bits(&crc, hCrcInfo->crcMask, hCrcInfo->crcPoly, &bsReader, mBits ); 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (rBits!=0) { 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* zero bytes */ 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (hCrcInfo->pCrcLookup) && (rBits>8) ) { 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rBits -= (calcCrc_Bytes(&crc, hCrcInfo->pCrcLookup, NULL, rBits>>3)<<3); 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* remaining zero bits */ 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (rBits!=0) { 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rBits -= calcCrc_Bits(&crc, hCrcInfo->crcMask, hCrcInfo->crcPoly, NULL, rBits ); 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hCrcInfo->crcValue = crc; 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 460