| |
| /* ----------------------------------------------------------------------------------------------------------- |
| 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-4 AAC Decoder ************************** |
| |
| Author(s): Christian Griebel |
| Description: Dynamic range control (DRC) global data types |
| |
| ******************************************************************************/ |
| |
| #ifndef AACDEC_DRC_TYPES_H |
| #define AACDEC_DRC_TYPES_H |
| |
| |
| |
| #include "common_fix.h" |
| |
| #define MAX_DRC_THREADS ( 3 ) /* Heavy compression value is handled just like MPEG DRC data */ |
| #define MAX_DRC_BANDS ( 16 ) /* 2^LEN_DRC_BAND_INCR (LEN_DRC_BAND_INCR = 4) */ |
| |
| /** |
| * \brief DRC module global data types |
| */ |
| typedef enum |
| { |
| UNKNOWN_PAYLOAD = 0, |
| MPEG_DRC_EXT_DATA = 1, |
| DVB_DRC_ANC_DATA = 2 |
| |
| } AACDEC_DRC_PAYLOAD_TYPE; |
| |
| typedef struct |
| { |
| UINT expiryCount; |
| UINT numBands; |
| USHORT bandTop[MAX_DRC_BANDS]; |
| SHORT drcInterpolationScheme; |
| UCHAR drcValue[MAX_DRC_BANDS]; |
| SCHAR drcDataType; |
| |
| } CDrcChannelData; |
| |
| typedef struct |
| { |
| UINT excludedChnsMask; |
| SCHAR progRefLevel; |
| SCHAR presMode; /* Presentation mode: 0 (not indicated), 1, 2, and 3 (reserved). */ |
| SCHAR pceInstanceTag; |
| |
| CDrcChannelData channelData; |
| |
| } CDrcPayload; |
| |
| typedef struct |
| { |
| FIXP_DBL cut; /* The attenuation scale factor currently used. */ |
| FIXP_DBL usrCut; /* The latest attenuation scale factor set by user. */ |
| FIXP_DBL boost; /* The boost scale factor currently used. */ |
| FIXP_DBL usrBoost; /* The latest boost scale factor set by user. */ |
| |
| UINT expiryFrame; |
| SCHAR targetRefLevel; |
| UCHAR bsDelayEnable; |
| UCHAR applyDigitalNorm; |
| UCHAR applyHeavyCompression; |
| |
| } CDrcParams; |
| |
| |
| typedef struct |
| { |
| CDrcParams params; /* Module parameters that can be set by user (via SetParam API function) */ |
| |
| UCHAR enable; /* Switch that controls dynamic range processing */ |
| UCHAR digitalNorm; /* Switch to en-/disable reference level normalization in digital domain */ |
| |
| USHORT numPayloads; /* The number of DRC data payload elements found within frame */ |
| USHORT numThreads; /* The number of DRC data threads extracted from the found payload elements */ |
| SCHAR progRefLevel; /* Program reference level for all channels */ |
| UCHAR progRefLevelPresent; /* Program reference level found in bitstream */ |
| |
| UINT prlExpiryCount; /* Counter that can be used to monitor the life time of the program reference level. */ |
| |
| SCHAR presMode; /* Presentation mode as defined in ETSI TS 101 154 */ |
| UCHAR dvbAncDataAvailable; /* Flag that indicates whether DVB ancillary data is present or not */ |
| UINT dvbAncDataPosition; /* Used to store the DVB ancillary data payload position in the bitstream (only one per frame) */ |
| UINT drcPayloadPosition[MAX_DRC_THREADS]; /* Used to store the DRC payload positions in the bitstream */ |
| |
| } CDrcInfo; |
| |
| typedef CDrcInfo *HANDLE_AAC_DRC; |
| |
| #endif /* AACDEC_DRC_TYPES_H */ |
| |