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Diffstat (limited to 'libFDK/include/FDK_crc.h')
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diff --git a/libFDK/include/FDK_crc.h b/libFDK/include/FDK_crc.h deleted file mode 100644 index b1fed88..0000000 --- a/libFDK/include/FDK_crc.h +++ /dev/null @@ -1,231 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -Software License for The Fraunhofer FDK AAC Codec Library for Android - -© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - All rights reserved. - - 1. INTRODUCTION -The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements -the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. -This FDK AAC Codec software is intended to be used on a wide variety of Android devices. - -AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual -audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by -independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part -of the MPEG specifications. - -Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) -may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners -individually for the purpose of encoding or decoding bit streams in products that are compliant with -the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license -these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec -software may already be covered under those patent licenses when it is used for those licensed purposes only. - -Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, -are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional -applications information and documentation. - -2. COPYRIGHT LICENSE - -Redistribution and use in source and binary forms, with or without modification, are permitted without -payment of copyright license fees provided that you satisfy the following conditions: - -You must retain the complete text of this software license in redistributions of the FDK AAC Codec or -your modifications thereto in source code form. - -You must retain the complete text of this software license in the documentation and/or other materials -provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. -You must make available free of charge copies of the complete source code of the FDK AAC Codec and your -modifications thereto to recipients of copies in binary form. - -The name of Fraunhofer may not be used to endorse or promote products derived from this library without -prior written permission. - -You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec -software or your modifications thereto. - -Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software -and the date of any change. For modified versions of the FDK AAC Codec, the term -"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term -"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." - -3. NO PATENT LICENSE - -NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, -ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with -respect to this software. - -You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized -by appropriate patent licenses. - -4. DISCLAIMER - -This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors -"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties -of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR -CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, -including but not limited to procurement of substitute goods or services; loss of use, data, or profits, -or business interruption, however caused and on any theory of liability, whether in contract, strict -liability, or tort (including negligence), arising in any way out of the use of this software, even if -advised of the possibility of such damage. - -5. CONTACT INFORMATION - -Fraunhofer Institute for Integrated Circuits IIS -Attention: Audio and Multimedia Departments - FDK AAC LL -Am Wolfsmantel 33 -91058 Erlangen, Germany - -www.iis.fraunhofer.de/amm -amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ - -/******************************** MPEG Audio Encoder ************************** - - Initial author: - contents/description: CRC calculation - -******************************************************************************/ - -#ifndef FDK_CRC_H -#define FDK_CRC_H - - - -#include "FDK_bitstream.h" - - -#define MAX_CRC_REGS 3 /*!< Maximal number of overlapping crc region in ADTS channel pair element is two. - Select three independent regions preventively. */ - -/** - * This structure describes single crc region used for crc calculation. - */ -typedef struct -{ - UCHAR isActive; - INT maxBits; - UINT bitBufCntBits; - UINT validBits; - -} CCrcRegData; - -/** - * CRC info structure. - */ -typedef struct -{ - CCrcRegData crcRegData[MAX_CRC_REGS]; /*!< Multiple crc region description. */ - const USHORT *pCrcLookup; /*!< Pointer to lookup table filled in FDK_crcInit(). */ - - USHORT crcPoly; /*!< CRC generator polynom. */ - USHORT crcMask; /*!< CRC mask. */ - USHORT startValue; /*!< CRC start value. */ - UCHAR crcLen; /*!< CRC length. */ - - UINT regStart; /*!< Start region marker for synchronization. */ - UINT regStop; /*!< Stop region marker for synchronization. */ - - USHORT crcValue; /*!< Crc value to be calculated. */ - -} FDK_CRCINFO; - -/** - * CRC info handle. - */ -typedef FDK_CRCINFO* HANDLE_FDK_CRCINFO; - - -/** - * \brief Initialize CRC structure. - * - * The function initializes existing crc info structure with denoted configuration. - * - * \param hCrcInfo Pointer to an outlying allocated crc info structure. - * \param crcPoly Configure crc polynom. - * \param crcStartValue Configure crc start value. - * \param crcLen Configure crc length. - * - * \return none - */ -void FDKcrcInit( - HANDLE_FDK_CRCINFO hCrcInfo, - const UINT crcPoly, - const UINT crcStartValue, - const UINT crcLen - ); - -/** - * \brief Reset CRC info structure. - * - * This function clears all intern states of the crc structure. - * - * \param hCrcInfo Pointer to crc info stucture. - * - * \return none - */ -void FDKcrcReset( - HANDLE_FDK_CRCINFO hCrcInfo - ); - - -/** - * \brief Start CRC region with maximum number of bits. - * - * This function marks position in bitstream to be used as start point for crc calculation. - * Bitstream range for crc calculation can be limited or kept dynamic depending on mBits parameter. - * The crc region has to be terminated with FDKcrcEndReg() in each case. - * - * \param hCrcInfo Pointer to crc info stucture. - * \param hBs Pointer to current bit buffer structure. - * \param mBits Number of bits in crc region to be calculated. - * - mBits > 0: Zero padding will be used for CRC calculation, if there - * are less than mBits bits available. - * - mBits < 0: No zero padding is done. - * - mBits = 0: The number of bits used in crc calculation is dynamically, - * depending on bitstream position between FDKcrcStartReg() and - * FDKcrcEndReg() call. - * - * \return ID for the created region, -1 in case of an error - */ -INT FDKcrcStartReg( - HANDLE_FDK_CRCINFO hCrcInfo, - const HANDLE_FDK_BITSTREAM hBs, - const INT mBits - ); - - -/** - * \brief Ends CRC region. - * - * This function terminates crc region specified with FDKcrcStartReg(). The number of bits in crc region depends - * on mBits parameter of FDKcrcStartReg(). - * This function calculates and updates crc in info structure. - * - * \param hCrcInfo Pointer to crc info stucture. - * \param hBs Pointer to current bit buffer structure. - * \param reg Crc region ID created in FDKcrcStartReg(). - * - * \return 0 on success - */ -INT FDKcrcEndReg( - HANDLE_FDK_CRCINFO hCrcInfo, - const HANDLE_FDK_BITSTREAM hBs, - const INT reg - ); - - -/** - * \brief This function returns crc value from info struct. - * - * \param hCrcInfo Pointer to crc info stucture. - * - * \return CRC value masked with crc length. - */ -USHORT FDKcrcGetCRC( - const HANDLE_FDK_CRCINFO hCrcInfo - ); - - -#endif /* FDK_CRC_H */ |