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Diffstat (limited to 'fdk-aac/libSACenc/src/sacenc_huff_tab.h')
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diff --git a/fdk-aac/libSACenc/src/sacenc_huff_tab.h b/fdk-aac/libSACenc/src/sacenc_huff_tab.h new file mode 100644 index 0000000..7d6c331 --- /dev/null +++ b/fdk-aac/libSACenc/src/sacenc_huff_tab.h @@ -0,0 +1,222 @@ +/* ----------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© Copyright 1995 - 2018 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 surround encoder library ************************* + + Author(s): Markus Lohwasser + + Description: SAC-Encoder constant huffman tables + +*******************************************************************************/ + +#ifndef SACENC_HUFF_TAB_H +#define SACENC_HUFF_TAB_H + +/* Includes ******************************************************************/ +#include "machine_type.h" + +/* Defines *******************************************************************/ +#define HUFF_PACK(a, b) \ + { \ + ((((ULONG)a) & 0x00FFFFFF) << 8) | (((ULONG)b) & 0xFF) \ + } /*!< Pack huffman value and length information. */ +#define HUFF_VALUE(a) \ + (((a.packed >> 8) & 0x00FFFFFF)) /*!< Return value from packed table entry. \ + */ +#define HUFF_LENGTH(a) \ + ((a.packed & 0xFF)) /*!< Return length from packed table entry. */ + +/* Data Types ****************************************************************/ +/** + * \brief This struct contains packed huffman entries. + * + * The packed entry consist of hffman value and length information. + * + * |---------------------------------| + * | value | length | + * |---------------------------------| + * |<------- 31...8 ------->|< 7..0 >| + */ +typedef struct { + ULONG packed; /*! Packed huffman entry: + - lower 8 bit are reservoed for length information + - upper 24 bit contains huffman value */ +} HUFF_ENTRY; + +typedef struct { + HUFF_ENTRY entry[2][2]; + HUFF_ENTRY escape; + +} LAV1_2D; + +typedef struct { + HUFF_ENTRY entry[4][4]; + HUFF_ENTRY escape; + +} LAV3_2D; + +typedef struct { + HUFF_ENTRY entry[6][6]; + HUFF_ENTRY escape; + +} LAV5_2D; + +typedef struct { + HUFF_ENTRY entry[7][7]; + HUFF_ENTRY escape; + +} LAV6_2D; + +typedef struct { + HUFF_ENTRY entry[8][8]; + HUFF_ENTRY escape; + +} LAV7_2D; + +typedef struct { + HUFF_ENTRY entry[10][10]; + HUFF_ENTRY escape; + +} LAV9_2D; + +typedef struct { + HUFF_ENTRY entry[13][13]; + HUFF_ENTRY escape; + +} LAV12_2D; + +typedef struct { + LAV3_2D lav3; + LAV5_2D lav5; + LAV7_2D lav7; + LAV9_2D lav9; + +} HUFF_CLD_TAB_2D; + +typedef struct { + LAV1_2D lav1; + LAV3_2D lav3; + LAV5_2D lav5; + LAV7_2D lav7; + +} HUFF_ICC_TAB_2D; + +typedef struct { + HUFF_ENTRY h1D[2][31]; + HUFF_CLD_TAB_2D h2D[2][2]; + +} HUFF_CLD_TABLE; + +typedef struct { + HUFF_ENTRY h1D[2][8]; + HUFF_ICC_TAB_2D h2D[2][2]; + +} HUFF_ICC_TABLE; + +typedef struct { + HUFF_ENTRY cld[31]; + HUFF_ENTRY icc[8]; + +} HUFF_PT0_TABLE; + +typedef HUFF_ENTRY HUFF_RES_TABLE[5][8]; + +/* Constants *****************************************************************/ +extern const HUFF_CLD_TABLE fdk_sacenc_huffCLDTab; +extern const HUFF_ICC_TABLE fdk_sacenc_huffICCTab; +extern const HUFF_PT0_TABLE fdk_sacenc_huffPart0Tab; + +/* Function / Class Declarations *********************************************/ + +#endif /* SACENC_HUFF_TAB_H */ |