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-
-/* -----------------------------------------------------------------------------------------------------------
-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
------------------------------------------------------------------------------------------------------------ */
-
-#ifndef __RESAMPLER_H
-#define __RESAMPLER_H
-/*!
- \file
- \brief Fixed Point Resampler Tool Box
-*/
-
-#include "common_fix.h"
-
-
-/**************************************************************************/
-/* BIQUAD Filter Structure */
-/**************************************************************************/
-
-#define MAXNR_SECTIONS (15)
-
-#ifdef RS_BIQUAD_STATES16
-typedef FIXP_SGL FIXP_BQS;
-#else
-typedef FIXP_DBL FIXP_BQS;
-#endif
-
-typedef struct
-{
- FIXP_BQS states[MAXNR_SECTIONS+1][2]; /*! state buffer */
- const FIXP_SGL *coeffa; /*! pointer to filter coeffs */
- FIXP_DBL gain; /*! overall gain factor */
- int Wc; /*! normalized cutoff freq * 1000 */
- int noCoeffs; /*! number of filter coeffs sets */
- int ptr; /*! index to rinbuffers */
-} LP_FILTER;
-
-
-/**************************************************************************/
-/* Downsampler Structure */
-/**************************************************************************/
-
-typedef struct
-{
- LP_FILTER downFilter; /*! filter instance */
- int ratio; /*! downsampling ration */
- int delay; /*! downsampling delay (source fs) */
- int pending; /*! number of pending output samples */
-} DOWNSAMPLER;
-
-
-/**
- * \brief Initialized a given downsampler structure.
- */
-INT FDKaacEnc_InitDownsampler(DOWNSAMPLER *DownSampler, /*!< pointer to downsampler instance */
- INT Wc, /*!< normalized cutoff freq * 1000 */
- INT ratio); /*!< downsampler ratio */
-
-/**
- * \brief Downsample a set of audio samples. numInSamples must be at least equal to the
- * downsampler ratio.
- */
-INT FDKaacEnc_Downsample(DOWNSAMPLER *DownSampler, /*!< pointer to downsampler instance */
- INT_PCM *inSamples, /*!< pointer to input samples */
- INT numInSamples, /*!< number of input samples */
- INT inStride, /*!< increment of input samples */
- INT_PCM *outSamples, /*!< pointer to output samples */
- INT *numOutSamples, /*!< pointer tp number of output samples */
- INT outstride); /*!< increment of output samples */
-
-
-
-#endif /* __RESAMPLER_H */