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Diffstat (limited to 'libSBRdec/src/env_calc.h')
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diff --git a/libSBRdec/src/env_calc.h b/libSBRdec/src/env_calc.h deleted file mode 100644 index 8154166..0000000 --- a/libSBRdec/src/env_calc.h +++ /dev/null @@ -1,165 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -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 ------------------------------------------------------------------------------------------------------------ */ - -/*! - \file - \brief Envelope calculation prototypes -*/ -#ifndef __ENV_CALC_H -#define __ENV_CALC_H - -#include "sbrdecoder.h" -#include "env_extr.h" /* for HANDLE_SBR_HEADER_DATA */ -#include "sbr_scale.h" - - -typedef struct -{ - FIXP_DBL filtBuffer[MAX_FREQ_COEFFS]; /*!< previous gains (required for smoothing) */ - FIXP_DBL filtBufferNoise[MAX_FREQ_COEFFS]; /*!< previous noise levels (required for smoothing) */ - SCHAR filtBuffer_e[MAX_FREQ_COEFFS]; /*!< Exponents of previous gains */ - SCHAR filtBufferNoise_e; /*!< Common exponent of previous noise levels */ - - int startUp; /*!< flag to signal initial conditions in buffers */ - int phaseIndex; /*!< Index for randomPase array */ - int prevTranEnv; /*!< The transient envelope of the previous frame. */ - - int harmFlagsPrev[(MAX_FREQ_COEFFS+15)/16]; - /*!< Words with 16 flags each indicating where a sine was added in the previous frame.*/ - UCHAR harmIndex; /*!< Current phase of synthetic sine */ - -} -SBR_CALCULATE_ENVELOPE; - -typedef SBR_CALCULATE_ENVELOPE *HANDLE_SBR_CALCULATE_ENVELOPE; - - - -void -calculateSbrEnvelope (QMF_SCALE_FACTOR *sbrScaleFactor, - HANDLE_SBR_CALCULATE_ENVELOPE h_sbr_cal_env, - HANDLE_SBR_HEADER_DATA hHeaderData, - HANDLE_SBR_FRAME_DATA hFrameData, - FIXP_DBL **analysBufferReal, - FIXP_DBL **analysBufferImag, /*!< Imag part of subband samples to be processed */ - const int useLP, - FIXP_DBL *degreeAlias, /*!< Estimated aliasing for each QMF channel */ - const UINT flags, - const int frameErrorFlag - ); - -SBR_ERROR -createSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hSbrCalculateEnvelope, - HANDLE_SBR_HEADER_DATA hHeaderData, - const int chan, - const UINT flags); - -int -deleteSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hSbrCalculateEnvelope); - -void -resetSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hCalEnv); - -SBR_ERROR -ResetLimiterBands ( UCHAR *limiterBandTable, - UCHAR *noLimiterBands, - UCHAR *freqBandTable, - int noFreqBands, - const PATCH_PARAM *patchParam, - int noPatches, - int limiterBands); - -void rescaleSubbandSamples( FIXP_DBL ** re, - FIXP_DBL ** im, - int lowSubband, int noSubbands, - int start_pos, int next_pos, - int shift); - -FIXP_DBL maxSubbandSample( FIXP_DBL ** analysBufferReal_m, - FIXP_DBL ** analysBufferImag_m, - int lowSubband, - int highSubband, - int start_pos, - int stop_pos); - -#endif // __ENV_CALC_H |