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Diffstat (limited to 'libAACenc/src/aacenc_tns.h')
| -rw-r--r-- | libAACenc/src/aacenc_tns.h | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/libAACenc/src/aacenc_tns.h b/libAACenc/src/aacenc_tns.h deleted file mode 100644 index 2824cbc..0000000 --- a/libAACenc/src/aacenc_tns.h +++ /dev/null @@ -1,202 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -Software License for The Fraunhofer FDK AAC Codec Library for Android - -© Copyright 1995 - 2015 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 Audio Encoder ************************** - - Initial author: Alex Groeschel - contents/description: Temporal noise shaping - -******************************************************************************/ - -#ifndef _TNS_H -#define _TNS_H - -#include "common_fix.h" - -#include "psy_const.h" - - -#ifndef PI -#define PI 3.1415926535897931f -#endif - -/** - * TNS_ENABLE_MASK - * This bitfield defines which TNS features are enabled - * The TNS mask is composed of 4 bits. - * tnsMask |= 0x1; activate TNS short blocks - * tnsMask |= 0x2; activate TNS for long blocks - * tnsMask |= 0x4; activate TNS PEAK tool for short blocks - * tnsMask |= 0x8; activate TNS PEAK tool for long blocks - */ -#define TNS_ENABLE_MASK 0xf - -/* TNS max filter order for Low Complexity MPEG4 profile */ -#define TNS_MAX_ORDER 12 - - -#define MAX_NUM_OF_FILTERS 2 - -#define HIFILT 0 /* index of higher filter */ -#define LOFILT 1 /* index of lower filter */ - - -typedef struct{ /* stuff that is tabulated dependent on bitrate etc. */ - INT filterEnabled[MAX_NUM_OF_FILTERS]; - INT threshOn[MAX_NUM_OF_FILTERS]; /* min. prediction gain for using tns TABUL*/ - INT filterStartFreq[MAX_NUM_OF_FILTERS]; /* lowest freq for lpc TABUL*/ - INT tnsLimitOrder[MAX_NUM_OF_FILTERS]; /* Limit for TNS order TABUL*/ - INT tnsFilterDirection[MAX_NUM_OF_FILTERS]; /* Filtering direction, 0=up, 1=down TABUL */ - INT acfSplit[MAX_NUM_OF_FILTERS]; - FIXP_DBL tnsTimeResolution[MAX_NUM_OF_FILTERS]; /* TNS max. time resolution TABUL. Should be fract but MSVC won't compile then */ - INT seperateFiltersAllowed; -} TNS_PARAMETER_TABULATED; - - -typedef struct { /*assigned at InitTime*/ - TNS_PARAMETER_TABULATED confTab; - INT isLowDelay; - INT tnsActive; - INT maxOrder; /* max. order of tns filter */ - INT coefRes; - FIXP_DBL acfWindow[MAX_NUM_OF_FILTERS][TNS_MAX_ORDER+3+1]; - /* now some things that only probably can be done at Init time; - could be they have to be split up for each individual (short) window or - even filter. */ - INT lpcStartBand[MAX_NUM_OF_FILTERS]; - INT lpcStartLine[MAX_NUM_OF_FILTERS]; - INT lpcStopBand; - INT lpcStopLine; - -}TNS_CONFIG; - - -typedef struct { - INT tnsActive[MAX_NUM_OF_FILTERS]; - INT predictionGain[MAX_NUM_OF_FILTERS]; -} TNS_SUBBLOCK_INFO; - -typedef struct{ /*changed at runTime*/ - TNS_SUBBLOCK_INFO subBlockInfo[TRANS_FAC]; - FIXP_DBL ratioMultTable[TRANS_FAC][MAX_SFB_SHORT]; -} TNS_DATA_SHORT; - -typedef struct{ /*changed at runTime*/ - TNS_SUBBLOCK_INFO subBlockInfo; - FIXP_DBL ratioMultTable[MAX_SFB_LONG]; -} TNS_DATA_LONG; - -/* can be implemented as union */ -typedef shouldBeUnion{ - TNS_DATA_LONG Long; - TNS_DATA_SHORT Short; -}TNS_DATA_RAW; - -typedef struct{ - INT numOfSubblocks; - TNS_DATA_RAW dataRaw; - INT tnsMaxScaleSpec; - INT filtersMerged; -}TNS_DATA; - -typedef struct{ - INT numOfFilters[TRANS_FAC]; - INT coefRes[TRANS_FAC]; - INT length[TRANS_FAC][MAX_NUM_OF_FILTERS]; - INT order[TRANS_FAC][MAX_NUM_OF_FILTERS]; - INT direction[TRANS_FAC][MAX_NUM_OF_FILTERS]; - INT coefCompress[TRANS_FAC][MAX_NUM_OF_FILTERS]; - /* for Long: length TNS_MAX_ORDER (12 for LC) is required -> 12 */ - /* for Short: length TRANS_FAC*TNS_MAX_ORDER (only 5 for short LC) is required -> 8*5=40 */ - /* Currently TRANS_FAC*TNS_MAX_ORDER = 8*12 = 96 (for LC) is used (per channel)! Memory could be saved here! */ - INT coef[TRANS_FAC][MAX_NUM_OF_FILTERS][TNS_MAX_ORDER]; -}TNS_INFO; - -INT FDKaacEnc_FreqToBandWithRounding( - const INT freq, - const INT fs, - const INT numOfBands, - const INT *bandStartOffset - ); - -#endif /* _TNS_H */ |