| /* ----------------------------------------------------------------------------- |
| 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 |
| ----------------------------------------------------------------------------- */ |
| |
| /**************************** AAC decoder library ****************************** |
| |
| Author(s): Christian Griebel |
| |
| Description: Dynamic range control (DRC) decoder tool for AAC |
| |
| *******************************************************************************/ |
| |
| #ifndef AACDEC_DRC_H |
| #define AACDEC_DRC_H |
| |
| #include "tp_data.h" /* for program config element support */ |
| |
| #include "aacdec_drc_types.h" |
| #include "channel.h" |
| #include "FDK_bitstream.h" |
| |
| #define AACDEC_DRC_DFLT_EXPIRY_FRAMES \ |
| (0) /* Default DRC data expiry time in AAC frames */ |
| |
| /* #define AACDEC_DRC_IGNORE_FRAMES_WITH_MULTIPLE_CH_THREADS */ /* The name says |
| it all. */ |
| /* #define AACDEC_DRC_DEBUG */ |
| |
| /** |
| * \brief DRC module setting parameters |
| */ |
| typedef enum { |
| DRC_CUT_SCALE = 0, |
| DRC_BOOST_SCALE, |
| TARGET_REF_LEVEL, |
| DRC_BS_DELAY, |
| DRC_DATA_EXPIRY_FRAME, |
| APPLY_NORMALIZATION, |
| APPLY_HEAVY_COMPRESSION, |
| DEFAULT_PRESENTATION_MODE, |
| ENCODER_TARGET_LEVEL, |
| MAX_OUTPUT_CHANNELS, |
| UNIDRC_PRECEDENCE |
| } AACDEC_DRC_PARAM; |
| |
| /** |
| * \brief DRC module interface functions |
| */ |
| void aacDecoder_drcInit(HANDLE_AAC_DRC self); |
| |
| void aacDecoder_drcInitChannelData(CDrcChannelData *pDrcChannel); |
| |
| AAC_DECODER_ERROR aacDecoder_drcSetParam(HANDLE_AAC_DRC self, |
| AACDEC_DRC_PARAM param, INT value); |
| |
| int aacDecoder_drcMarkPayload(HANDLE_AAC_DRC self, HANDLE_FDK_BITSTREAM hBs, |
| AACDEC_DRC_PAYLOAD_TYPE type); |
| |
| int aacDecoder_drcProlog( |
| HANDLE_AAC_DRC self, HANDLE_FDK_BITSTREAM hBs, |
| CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], |
| UCHAR pceInstanceTag, UCHAR channelMapping[], int validChannels); |
| |
| /** |
| * \brief Apply DRC. If SBR is present, DRC data is handed over to the SBR |
| * decoder. |
| * \param self AAC decoder instance |
| * \param pSbrDec pointer to SBR decoder instance |
| * \param pAacDecoderChannelInfo AAC decoder channel instance to be processed |
| * \param pDrcDat DRC channel data |
| * \param extGain Pointer to a FIXP_DBL where a externally applyable gain will |
| * be stored into (independently on whether it will be apply internally or not). |
| * At function call the buffer must hold the scale (0 >= scale < |
| * DFRACT_BITS) to be applied on the gain value. |
| * \param ch channel index |
| * \param aacFrameSize AAC frame size |
| * \param bSbrPresent flag indicating that SBR is present, in which case DRC is |
| * handed over to the SBR instance pSbrDec |
| */ |
| void aacDecoder_drcApply(HANDLE_AAC_DRC self, void *pSbrDec, |
| CAacDecoderChannelInfo *pAacDecoderChannelInfo, |
| CDrcChannelData *pDrcDat, FIXP_DBL *extGain, int ch, |
| int aacFrameSize, int bSbrPresent); |
| |
| int aacDecoder_drcEpilog( |
| HANDLE_AAC_DRC self, HANDLE_FDK_BITSTREAM hBs, |
| CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], |
| UCHAR pceInstanceTag, UCHAR channelMapping[], int validChannels); |
| |
| /** |
| * \brief Get metadata information found in bitstream. |
| * \param self DRC module instance handle. |
| * \param pPresMode Pointer to field where the presentation mode will be written |
| * to. |
| * \param pProgRefLevel Pointer to field where the program reference level will |
| * be written to. |
| * \return Nothing. |
| */ |
| void aacDecoder_drcGetInfo(HANDLE_AAC_DRC self, SCHAR *pPresMode, |
| SCHAR *pProgRefLevel); |
| |
| #endif /* AACDEC_DRC_H */ |