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Diffstat (limited to 'libSYS/include/syslib_channelMapDescr.h')
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diff --git a/libSYS/include/syslib_channelMapDescr.h b/libSYS/include/syslib_channelMapDescr.h new file mode 100644 index 0000000..1c5737a --- /dev/null +++ b/libSYS/include/syslib_channelMapDescr.h @@ -0,0 +1,196 @@ +/* ----------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© Copyright 1995 - 2018 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 +----------------------------------------------------------------------------- */ + +/************************* System integration library ************************** + + Author(s): Thomas Dietzen + + Description: + +*******************************************************************************/ + +/** \file syslib_channelMapDescr.h + * \brief Function and structure declarations for the channel map descriptor implementation. + */ + +#ifndef SYSLIB_CHANNELMAPDESCR_H +#define SYSLIB_CHANNELMAPDESCR_H + +#include "machine_type.h" + +/** + * \brief Contains information needed for a single channel map. + */ +typedef struct { + const UCHAR* + pChannelMap; /*!< Actual channel mapping for one single configuration. */ + UCHAR numChannels; /*!< The number of channels for the channel map which is + the maximum used channel index+1. */ +} CHANNEL_MAP_INFO; + +/** + * \brief This is the main data struct. It contains the mapping for all + * channel configurations such as administration information. + * + * CAUTION: Do not access this structure directly from a algorithm specific + * library. Always use one of the API access functions below! + */ +typedef struct { + const CHANNEL_MAP_INFO* pMapInfoTab; /*!< Table of channel maps. */ + UINT mapInfoTabLen; /*!< Length of the channel map table array. */ + UINT fPassThrough; /*!< Flag that defines whether the specified mapping shall + be applied (value: 0) or the input just gets passed + through (MPEG mapping). */ +} FDK_channelMapDescr; + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief Initialize a given channel map descriptor. + * + * \param pMapDescr Pointer to a channel map descriptor to be initialized. + * \param pMapInfoTab Table of channel maps to initizalize the descriptor + with. + * If a NULL pointer is given a default table for + WAV-like mapping will be used. + * \param mapInfoTabLen Length of the channel map table array (pMapInfoTab). + If a zero length is given a default table for WAV-like mapping will be used. + * \param fPassThrough If the flag is set the reordering (given by + pMapInfoTab) will be bypassed. + */ +void FDK_chMapDescr_init(FDK_channelMapDescr* const pMapDescr, + const CHANNEL_MAP_INFO* const pMapInfoTab, + const UINT mapInfoTabLen, const UINT fPassThrough); + +/** + * \brief Change the channel reordering state of a given channel map + * descriptor. + * + * \param pMapDescr Pointer to a (initialized) channel map descriptor. + * \param fPassThrough If the flag is set the reordering (given by + * pMapInfoTab) will be bypassed. + * \return Value unequal to zero if set operation was not + * successful. And zero on success. + */ +int FDK_chMapDescr_setPassThrough(FDK_channelMapDescr* const pMapDescr, + UINT fPassThrough); + +/** + * \brief Get the mapping value for a specific channel and map index. + * + * \param pMapDescr Pointer to channel map descriptor. + * \param chIdx Channel index. + * \param mapIdx Mapping index (corresponding to the channel configuration + * index). + * \return Mapping value. + */ +UCHAR FDK_chMapDescr_getMapValue(const FDK_channelMapDescr* const pMapDescr, + const UCHAR chIdx, const UINT mapIdx); + +/** + * \brief Evaluate whether channel map descriptor is reasonable or not. + * + * \param pMapDescr Pointer to channel map descriptor. + * \return Value unequal to zero if descriptor is valid, otherwise + * zero. + */ +int FDK_chMapDescr_isValid(const FDK_channelMapDescr* const pMapDescr); + +#ifdef __cplusplus +} +#endif + +#endif /* !defined(SYSLIB_CHANNELMAPDESCR_H) */ |