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Diffstat (limited to 'libFDK/include/FDK_tools_rom.h')
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diff --git a/libFDK/include/FDK_tools_rom.h b/libFDK/include/FDK_tools_rom.h new file mode 100644 index 0000000..e9e126e --- /dev/null +++ b/libFDK/include/FDK_tools_rom.h @@ -0,0 +1,267 @@ + +/* ----------------------------------------------------------------------------------------------------------- +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 +----------------------------------------------------------------------------------------------------------- */ + +/*************************** Fraunhofer IIS FDK Tools *********************** + + Author(s): Oliver Moser + Description: ROM tables used by FDK tools + +******************************************************************************/ + +#ifndef __FDK_TOOLS_ROM_H__ +#define __FDK_TOOLS_ROM_H__ + +#include "common_fix.h" +#include "FDK_audio.h" + + +/* None radix2 rotation vectors */ +extern const FIXP_STB RotVectorReal60[60]; +extern const FIXP_STB RotVectorImag60[60]; +extern const FIXP_STB RotVectorReal240[240]; +extern const FIXP_STB RotVectorImag240[240]; +extern const FIXP_STB RotVectorReal480[480]; +extern const FIXP_STB RotVectorImag480[480]; + + +/* Regular sine tables */ +extern const FIXP_STP SineTable512[]; +extern const FIXP_STP SineTable480[]; + +/* AAC-LC windows */ +extern const FIXP_WTP SineWindow1024[]; +extern const FIXP_WTP KBDWindow1024[]; +extern const FIXP_WTP SineWindow128[]; +extern const FIXP_WTP KBDWindow128[]; + +extern const FIXP_WTP SineWindow960[]; +extern const FIXP_WTP KBDWindow960[]; +extern const FIXP_WTP SineWindow120[]; +extern const FIXP_WTP KBDWindow120[]; + +/* AAC-LD windows */ +extern const FIXP_WTP SineWindow512[]; +#define LowOverlapWindow512 SineWindow128 +extern const FIXP_WTP SineWindow480[]; +#define LowOverlapWindow480 SineWindow120 + + + +extern const FIXP_WTP SineWindow64[]; +extern const FIXP_WTP SineWindow32[]; + +/** + * \brief Helper table for window slope mapping. You should prefer the usage of the + * function FDKgetWindowSlope(), this table is only made public for some optimized + * access inside dct.cpp. + */ +extern const FIXP_WTP *const windowSlopes[2][3][9]; + +/** + * \brief Window slope access helper. Obtain a window of given length and shape. + * \param length Length of the window slope. + * \param shape Shape index of the window slope. 0: sine window, 1: Kaiser-Bessel. Any other + * value is applied a mask of 1 to, mapping it to either 0 or 1. + * \param Pointer to window slope or NULL if the requested window slope is not available. + */ +const FIXP_WTP * FDKgetWindowSlope(int length, int shape); + +extern const FIXP_WTP sin_twiddle_L64[]; + +/* + * Filter coefficient type definition + */ + +#if defined(ARCH_PREFER_MULT_16x16) || defined(ARCH_PREFER_MULT_32x16) + #define QMF_COEFF_16BIT +#endif + +#define QMF_FILTER_PROTOTYPE_SIZE 640 +#define QMF_NO_POLY 5 + +#ifdef QMF_COEFF_16BIT + #define FIXP_PFT FIXP_SGL + #define FIXP_QTW FIXP_SGL +#else + #define FIXP_PFT FIXP_DBL + #define FIXP_QTW FIXP_DBL +#endif + +#define QMF640_PFT_TABLE_SIZE (640/2 + QMF_NO_POLY) + +extern const FIXP_QTW qmf_phaseshift_cos32[32]; +extern const FIXP_QTW qmf_phaseshift_sin32[32]; +extern const FIXP_QTW qmf_phaseshift_cos64[64]; +extern const FIXP_QTW qmf_phaseshift_sin64[64]; + +extern const FIXP_PFT qmf_64[QMF640_PFT_TABLE_SIZE+QMF_NO_POLY]; + + + + + +#define QMF640_CLDFB_PFT_TABLE_SIZE (640) +#define QMF320_CLDFB_PFT_TABLE_SIZE (320) +#define QMF_CLDFB_PFT_SCALE 1 + +extern const FIXP_QTW qmf_phaseshift_cos32_cldfb[32]; +extern const FIXP_QTW qmf_phaseshift_sin32_cldfb[32]; +extern const FIXP_QTW qmf_phaseshift_cos64_cldfb[64]; +extern const FIXP_QTW qmf_phaseshift_sin64_cldfb[64]; + +extern const FIXP_PFT qmf_cldfb_640[QMF640_CLDFB_PFT_TABLE_SIZE]; +extern const FIXP_PFT qmf_cldfb_320[QMF320_CLDFB_PFT_TABLE_SIZE]; + + + + + +/* + * Raw Data Block list stuff. + */ +typedef enum { + element_instance_tag, + common_window, + global_gain, + ics_info, /* ics_reserved_bit, window_sequence, window_shape, max_sfb, scale_factor_grouping, predictor_data_present, ltp_data_present, ltp_data */ + max_sfb, + ms, /* ms_mask_present, ms_used */ + /*predictor_data_present,*/ /* part of ics_info */ + ltp_data_present, + ltp_data, + section_data, + scale_factor_data, + pulse, /* pulse_data_present, pulse_data */ + tns_data_present, + tns_data, + gain_control_data_present, + gain_control_data, + esc1_hcr, + esc2_rvlc, + spectral_data, + + scale_factor_data_usac, + core_mode, + common_tw, + lpd_channel_stream, + tw_data, + noise, + ac_spectral_data, + fac_data, + tns_active, /* introduced in MPEG-D usac CD */ + tns_data_present_usac, + common_max_sfb, + + + /* Non data list items */ + adtscrc_start_reg1, + adtscrc_start_reg2, + adtscrc_end_reg1, + adtscrc_end_reg2, + drmcrc_start_reg, + drmcrc_end_reg, + next_channel, + next_channel_loop, + link_sequence, + end_of_sequence +} rbd_id_t; + +struct element_list { + const rbd_id_t *id; + const struct element_list *next[2]; +}; + +typedef struct element_list element_list_t; +/** + * \brief get elementary stream pieces list for given parameters. + * \param aot audio object type + * \param epConfig the epConfig value from the current Audio Specific Config + * \param nChannels amount of channels contained in the current element. + * \param layer the layer of the current element. + * \return element_list_t parser guidance structure. + */ +const element_list_t * getBitstreamElementList(AUDIO_OBJECT_TYPE aot, SCHAR epConfig, UCHAR nChannels, UCHAR layer); + + +#endif + |