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MpaDecFilter/ffmpeg - используем fdk-aac декодер когда надо, он позво…
…ляет декодировать USAC / xHE-AAC потоки.
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/* ----------------------------------------------------------------------------- | ||
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 | ||
[email protected] | ||
----------------------------------------------------------------------------- */ | ||
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/************************* System integration library ************************** | ||
Author(s): Thomas Dietzen | ||
Description: | ||
*******************************************************************************/ | ||
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/** \file syslib_channelMapDescr.h | ||
* \brief Function and structure declarations for the channel map descriptor implementation. | ||
*/ | ||
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#ifndef SYSLIB_CHANNELMAPDESCR_H | ||
#define SYSLIB_CHANNELMAPDESCR_H | ||
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#include "machine_type.h" | ||
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/** | ||
* \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; | ||
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/** | ||
* \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; | ||
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#ifdef __cplusplus | ||
extern "C" { | ||
#endif | ||
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/** | ||
* \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); | ||
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/** | ||
* \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); | ||
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/** | ||
* \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); | ||
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/** | ||
* \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); | ||
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/** | ||
* Extra variables for setting up Wg4 channel mapping. | ||
*/ | ||
extern const CHANNEL_MAP_INFO FDK_mapInfoTabWg4[]; | ||
extern const UINT FDK_mapInfoTabLenWg4; | ||
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#ifdef __cplusplus | ||
} | ||
#endif | ||
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#endif /* !defined(SYSLIB_CHANNELMAPDESCR_H) */ |
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