From 2228e360595641dd906bf1773307f43d304f5b2e Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Wed, 11 Jul 2012 10:15:24 -0700 Subject: Snapshot 2bda038c163298531d47394bc2c09e1409c5d0db Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54 --- libAACdec/src/conceal_types.h | 178 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 libAACdec/src/conceal_types.h (limited to 'libAACdec/src/conceal_types.h') diff --git a/libAACdec/src/conceal_types.h b/libAACdec/src/conceal_types.h new file mode 100644 index 0000000..c1cc6f2 --- /dev/null +++ b/libAACdec/src/conceal_types.h @@ -0,0 +1,178 @@ + +/* ----------------------------------------------------------------------------------------------------------- +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-4 AAC Decoder ************************** + + Author(s): Christian Griebel + Description: Error concealment structs and types + +******************************************************************************/ + +#ifndef CONCEAL_TYPES_H +#define CONCEAL_TYPES_H + + + +#include "machine_type.h" +#include "common_fix.h" + +#include "rvlc_info.h" + + +#define CONCEAL_MAX_NUM_FADE_FACTORS ( 16 ) + + #define FIXP_CNCL FIXP_DBL + #define FL2FXCONST_CNCL FL2FXCONST_DBL + #define FX_DBL2FX_CNCL + #define FX_CNCL2FX_DBL + #define CNCL_FRACT_BITS DFRACT_BITS + +/* Warning: Do not ever change these values. */ +typedef enum +{ + ConcealMethodNone = -1, + ConcealMethodMute = 0, + ConcealMethodNoise = 1, + ConcealMethodInter = 2, + ConcealMethodTonal = 3 + +} CConcealmentMethod; + + +typedef enum +{ + ConcealState_Ok, + ConcealState_Single, + ConcealState_FadeIn, + ConcealState_Mute, + ConcealState_FadeOut + +} CConcealmentState; + + +typedef struct +{ + FIXP_SGL fadeOutFactor[CONCEAL_MAX_NUM_FADE_FACTORS]; + FIXP_SGL fadeInFactor [CONCEAL_MAX_NUM_FADE_FACTORS]; + + CConcealmentMethod method; + + int numFadeOutFrames; + int numFadeInFrames; + int numMuteReleaseFrames; + int comfortNoiseLevel; + +} CConcealParams; + + + +typedef struct +{ + CConcealParams *pConcealParams; + + FIXP_CNCL spectralCoefficient[1024]; + SHORT specScale[8]; + + INT iRandomPhase; + INT prevFrameOk[2]; + INT cntFadeFrames; + INT cntValidFrames; + + SHORT aRvlcPreviousScaleFactor[RVLC_MAX_SFB]; /* needed once per channel */ + UCHAR aRvlcPreviousCodebook[RVLC_MAX_SFB]; /* needed once per channel */ + SCHAR rvlcPreviousScaleFactorOK; + SCHAR rvlcPreviousBlockType; + + + SCHAR lastRenderMode; + + UCHAR windowShape; + UCHAR windowSequence; + UCHAR lastWinGrpLen; + + CConcealmentState concealState; + +} CConcealmentInfo; + + +#endif /* #ifndef CONCEAL_TYPES_H */ -- cgit v1.2.3