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Diffstat (limited to 'libSBRenc/src/sbr.h')
| -rw-r--r-- | libSBRenc/src/sbr.h | 222 |
1 files changed, 125 insertions, 97 deletions
diff --git a/libSBRenc/src/sbr.h b/libSBRenc/src/sbr.h index c74ad2a..341dcab 100644 --- a/libSBRenc/src/sbr.h +++ b/libSBRenc/src/sbr.h @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- 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. +© 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. +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: +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 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 +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. +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. +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." +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. +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. +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. +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 @@ -79,15 +90,23 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ + +/**************************** SBR encoder library ****************************** + + Author(s): + + Description: + +*******************************************************************************/ /*! \file - \brief Main SBR structs definitions + \brief Main SBR structs definitions $Revision: 92790 $ */ -#ifndef __SBR_H -#define __SBR_H +#ifndef SBR_H +#define SBR_H #include "fram_gen.h" #include "bit_sbr.h" @@ -101,66 +120,75 @@ amm-info@iis.fraunhofer.de #include "ton_corr.h" - /* SBR bitstream delay */ - #define DELAY_FRAMES 2 +#define MAX_DELAY_FRAMES 2 +/* sbr encoder downsampling type */ +typedef enum { SBRENC_DS_NONE, SBRENC_DS_TIME, SBRENC_DS_QMF } SBRENC_DS_TYPE; typedef struct SBR_CHANNEL { - struct ENV_CHANNEL hEnvChannel; - //INT_PCM *pDSOutBuffer; /**< Pointer to downsampled audio output of SBR encoder */ - DOWNSAMPLER downSampler; + struct ENV_CHANNEL hEnvChannel; + // INT_PCM *pDSOutBuffer; /**< Pointer to + // downsampled audio output of SBR encoder */ + DOWNSAMPLER downSampler; } SBR_CHANNEL; typedef SBR_CHANNEL* HANDLE_SBR_CHANNEL; typedef struct SBR_ELEMENT { - HANDLE_SBR_CHANNEL sbrChannel[2]; - QMF_FILTER_BANK *hQmfAnalysis[2]; - SBR_CONFIG_DATA sbrConfigData; - SBR_HEADER_DATA sbrHeaderData; - SBR_BITSTREAM_DATA sbrBitstreamData; - COMMON_DATA CmonData; - INT dynXOverFreqDelay[5]; /**< to delay a frame (I don't like it that much that way - hrc) */ - SBR_ELEMENT_INFO elInfo; - - UCHAR payloadDelayLine[1+DELAY_FRAMES][MAX_PAYLOAD_SIZE]; - UINT payloadDelayLineSize[1+DELAY_FRAMES]; /* Sizes in bits */ + HANDLE_SBR_CHANNEL sbrChannel[2]; + QMF_FILTER_BANK* hQmfAnalysis[2]; + SBR_CONFIG_DATA sbrConfigData; + SBR_HEADER_DATA sbrHeaderData; + SBR_BITSTREAM_DATA sbrBitstreamData; + COMMON_DATA CmonData; + INT dynXOverFreqDelay[5]; /**< to delay a frame (I don't like it that much + that way - hrc) */ + SBR_ELEMENT_INFO elInfo; + + UCHAR payloadDelayLine[1 + MAX_DELAY_FRAMES][MAX_PAYLOAD_SIZE]; + UINT payloadDelayLineSize[1 + MAX_DELAY_FRAMES]; /* Sizes in bits */ } SBR_ELEMENT, *HANDLE_SBR_ELEMENT; -typedef struct SBR_ENCODER -{ - HANDLE_SBR_ELEMENT sbrElement[(8)]; - HANDLE_SBR_CHANNEL pSbrChannel[(8)]; - QMF_FILTER_BANK QmfAnalysis[(8)]; - DOWNSAMPLER lfeDownSampler; - int lfeChIdx; /* -1 default for no lfe, else assign channel index */ - int noElements; /* Number of elements */ - int nChannels; /* Total channel count across all elements. */ - int frameSize; /* SBR framelength. */ - int bufferOffset; /* Offset for SBR parameter extraction in time domain input buffer. */ - int downsampledOffset; /* Offset of downsampled/mixed output for core encoder. */ - int downmixSize; /* Size in samples of downsampled/mixed output for core encoder. */ - INT downSampleFactor; /* Sampling rate relation between the SBR and the core encoder. */ - int fTimeDomainDownsampling; /* Flag signalling time domain downsampling instead of QMF downsampling. */ - int nBitstrDelay; /* Amount of SBR frames to be delayed in bitstream domain. */ - INT estimateBitrate; /* estimate bitrate of SBR encoder */ - INT inputDataDelay; /* delay caused by downsampler, in/out buffer at sbrEncoder_EncodeFrame */ +typedef struct SBR_ENCODER { + HANDLE_SBR_ELEMENT sbrElement[(8)]; + HANDLE_SBR_CHANNEL pSbrChannel[(8)]; + QMF_FILTER_BANK QmfAnalysis[(8)]; + DOWNSAMPLER lfeDownSampler; + int lfeChIdx; /* -1 default for no lfe, else assign channel index. */ + int noElements; /* Number of elements. */ + int nChannels; /* Total channel count across all elements. */ + int frameSize; /* SBR framelength. */ + int bufferOffset; /* Offset for SBR parameter extraction in time domain input + buffer. */ + int downsampledOffset; /* Offset of downsampled/mixed output for core encoder. + */ + int downmixSize; /* Size in samples of downsampled/mixed output for core + encoder. */ + INT downSampleFactor; /* Sampling rate relation between the SBR and the core + encoder. */ + SBRENC_DS_TYPE + downsamplingMethod; /* Method of downsmapling, time-domain, QMF or none. + */ + int nBitstrDelay; /* Amount of SBR frames to be delayed in bitstream domain. + */ + int sbrDecDelay; /* SBR decoder delay in samples */ + INT estimateBitrate; /* Estimate bitrate of SBR encoder. */ + INT inputDataDelay; /* Delay caused by downsampler, in/out buffer at + sbrEncoder_EncodeFrame. */ UCHAR* dynamicRam; UCHAR* pSBRdynamic_RAM; - HANDLE_PARAMETRIC_STEREO hParametricStereo; - QMF_FILTER_BANK qmfSynthesisPS; + HANDLE_PARAMETRIC_STEREO hParametricStereo; + QMF_FILTER_BANK qmfSynthesisPS; /* parameters describing allocation volume of present instance */ - INT maxElements; - INT maxChannels; - INT supportPS; - + INT maxElements; + INT maxChannels; + INT supportPS; } SBR_ENCODER; - -#endif /* __SBR_H */ +#endif /* SBR_H */ |