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authorThe Android Open Source Project <initial-contribution@android.com>2012-07-11 10:15:24 -0700
committerThe Android Open Source Project <initial-contribution@android.com>2012-07-11 10:15:24 -0700
commit2228e360595641dd906bf1773307f43d304f5b2e (patch)
tree57f3d390ebb0782cc0de0fb984c8ea7e45b4f386 /libSBRenc/src/ps_encode.h
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Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54
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+
+/* -----------------------------------------------------------------------------------------------------------
+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