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Diffstat (limited to 'libSBRenc/src/ps_encode.h')
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diff --git a/libSBRenc/src/ps_encode.h b/libSBRenc/src/ps_encode.h new file mode 100644 index 0000000..a12f7c6 --- /dev/null +++ b/libSBRenc/src/ps_encode.h @@ -0,0 +1,187 @@ + +/* ----------------------------------------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© Copyright 1995 - 2012 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: M. Neuendorf, N. Rettelbach, M. Multrus + contents/description: PS Parameter extraction, encoding + +******************************************************************************/ +/*! + \file + \brief PS parameter extraction, encoding functions +*/ + +#ifndef __INCLUDED_PS_ENCODE_H +#define __INCLUDED_PS_ENCODE_H + +#include "ps_const.h" +#include "ps_bitenc.h" + + +#define IID_SCALE_FT (64.f) /* maxVal in Quant tab is +/- 50 */ +#define IID_SCALE 6 /* maxVal in Quant tab is +/- 50 */ +#define IID_MAXVAL (1<<IID_SCALE) + +#define PS_QUANT_SCALE_FT (64.f) /* error smaller (64-25)/64 * 20 bands * 4 env -> QuantScale 64 */ +#define PS_QUANT_SCALE 6 /* error smaller (64-25)/64 * 20 bands * 4 env -> QuantScale 6 bit */ + + +#define QMF_GROUPS_LO_RES 12 +#define SUBQMF_GROUPS_LO_RES 10 +#define QMF_GROUPS_HI_RES 18 +#define SUBQMF_GROUPS_HI_RES 30 + + +typedef struct T_PS_DATA { + + INT iidEnable; + INT iidEnableLast; + INT iidQuantMode; + INT iidQuantModeLast; + INT iidDiffMode[PS_MAX_ENVELOPES]; + INT iidIdx [PS_MAX_ENVELOPES][PS_MAX_BANDS]; + INT iidIdxLast [PS_MAX_BANDS]; + + INT iccEnable; + INT iccEnableLast; + INT iccQuantMode; + INT iccQuantModeLast; + INT iccDiffMode[PS_MAX_ENVELOPES]; + INT iccIdx [PS_MAX_ENVELOPES][PS_MAX_BANDS]; + INT iccIdxLast [PS_MAX_BANDS]; + + INT nEnvelopesLast; + + INT headerCnt; + INT iidTimeCnt; + INT iccTimeCnt; + INT noEnvCnt; + +} PS_DATA, *HANDLE_PS_DATA; + + +typedef struct T_PS_ENCODE{ + + PS_DATA psData; + + PS_BANDS psEncMode; + INT nQmfIidGroups; + INT nSubQmfIidGroups; + INT iidGroupBorders[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES + 1]; + INT subband2parameterIndex[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES]; + UCHAR iidGroupWidthLd[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES]; + FIXP_DBL iidQuantErrorThreshold; + + UCHAR psBandNrgScale [PS_MAX_BANDS]; + +} PS_ENCODE; + + +typedef struct T_PS_ENCODE *HANDLE_PS_ENCODE; + +FDK_PSENC_ERROR FDKsbrEnc_CreatePSEncode( + HANDLE_PS_ENCODE *phPsEncode + ); + +FDK_PSENC_ERROR FDKsbrEnc_InitPSEncode( + HANDLE_PS_ENCODE hPsEncode, + const PS_BANDS psEncMode, + const FIXP_DBL iidQuantErrorThreshold + ); + +FDK_PSENC_ERROR FDKsbrEnc_DestroyPSEncode( + HANDLE_PS_ENCODE *phPsEncode + ); + +FDK_PSENC_ERROR FDKsbrEnc_PSEncode( + HANDLE_PS_ENCODE hPsEncode, + HANDLE_PS_OUT hPsOut, + UCHAR *dynBandScale, + UINT maxEnvelopes, + FIXP_DBL *hybridData[HYBRID_FRAMESIZE][MAX_PS_CHANNELS][2], + const INT frameSize, + const INT sendHeader + ); + +#endif |