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Diffstat (limited to 'libSBRenc/src/fram_gen.h')
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diff --git a/libSBRenc/src/fram_gen.h b/libSBRenc/src/fram_gen.h deleted file mode 100644 index 00473d4..0000000 --- a/libSBRenc/src/fram_gen.h +++ /dev/null @@ -1,309 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -Software License for The Fraunhofer FDK AAC Codec Library for Android - -© Copyright 1995 - 2015 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 ------------------------------------------------------------------------------------------------------------ */ - -/*! - \file - \brief Framing generator prototypes and structs -*/ -#ifndef _FRAM_GEN_H -#define _FRAM_GEN_H - -#include "sbr_def.h" /* for MAX_ENVELOPES and MAX_NOISE_ENVELOPES in struct FRAME_INFO and CODEC_TYPE */ -#include "sbr_encoder.h" /* for FREQ_RES */ - -#define MAX_ENVELOPES_VARVAR MAX_ENVELOPES /*!< worst case number of envelopes in a VARVAR frame */ -#define MAX_ENVELOPES_FIXVAR_VARFIX 4 /*!< worst case number of envelopes in VARFIX and FIXVAR frames */ -#define MAX_NUM_REL 3 /*!< maximum number of relative borders in any VAR frame */ - -/* SBR frame class definitions */ -typedef enum { - FIXFIX = 0, /*!< bs_frame_class: leading and trailing frame borders are fixed */ - FIXVAR, /*!< bs_frame_class: leading frame border is fixed, trailing frame border is variable */ - VARFIX, /*!< bs_frame_class: leading frame border is variable, trailing frame border is fixed */ - VARVAR /*!< bs_frame_class: leading and trailing frame borders are variable */ - ,FIXFIXonly /*!< bs_frame_class: leading border fixed (0), trailing border fixed (nrTimeSlots) and encased borders are dynamically derived from the tranPos */ -}FRAME_CLASS; - - -/* helper constants */ -#define DC 4711 /*!< helper constant: don't care */ -#define EMPTY (-99) /*!< helper constant: empty */ - - -/* system constants: AAC+SBR, DRM Frame-Length */ -#define FRAME_MIDDLE_SLOT_1920 4 -#define NUMBER_TIME_SLOTS_1920 15 - -#define LD_PRETRAN_OFF 3 -#define FRAME_MIDDLE_SLOT_512LD 4 -#define NUMBER_TIME_SLOTS_512LD 8 -#define TRANSIENT_OFFSET_LD 0 - - - -/* -system constants: AAC+SBR or aacPRO (hybrid format), Standard Frame-Length, Multi-Rate ---------------------------------------------------------------------------- -Number of slots (numberTimeSlots): 16 (NUMBER_TIME_SLOTS_2048) -Detector-offset (frameMiddleSlot): 4 -Overlap : 3 -Buffer-offset : 8 (BUFFER_FRAME_START_2048 = 0) - - - |<------------tranPos---------->| - |c|d|e|f|0|1|2|3|4|5|6|7|8|9|a|b|c|d|e|f| - FixFix | | - FixVar | :<- ->: - VarFix :<- ->: | - VarVar :<- ->: :<- ->: - 0 1 2 3 4 5 6 7 8 9 a b c d e f 0 1 2 3 -................................................................................ - -|-|-|-|-|-|-|-|-B-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-B-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-| - -frame-generator:0 16 24 32 -analysis-buffer:8 24 32 40 -*/ -#define FRAME_MIDDLE_SLOT_2048 4 -#define NUMBER_TIME_SLOTS_2048 16 - - -/* -system constants: mp3PRO, Multi-Rate & Single-Rate --------------------------------------------------- -Number of slots (numberTimeSlots): 9 (NUMBER_TIME_SLOTS_1152) -Detector-offset (frameMiddleSlot): 4 (FRAME_MIDDLE_SLOT_1152) -Overlap : 3 -Buffer-offset : 4.5 (BUFFER_FRAME_START_1152 = 0) - - - |<----tranPos---->| - |5|6|7|8|0|1|2|3|4|5|6|7|8| - FixFix | | - FixVar | :<- ->: - VarFix :<- ->: | - VarVar :<- ->: :<- ->: - 0 1 2 3 4 5 6 7 8 0 1 2 3 - ............................................. - - -|-|-|-|-B-|-|-|-|-|-|-|-|-B-|-|-|-|-|-|-|-|-| - -frame-generator: 0 9 13 18 -analysis-buffer: 4.5 13.5 22.5 -*/ -#define FRAME_MIDDLE_SLOT_1152 4 -#define NUMBER_TIME_SLOTS_1152 9 - - -/* system constants: Layer2+SBR */ -#define FRAME_MIDDLE_SLOT_2304 8 -#define NUMBER_TIME_SLOTS_2304 18 - - -/*! - \struct SBR_GRID - \brief sbr_grid() signals to be converted to bitstream elements - - The variables hold the signals (e.g. lengths and numbers) in "clear text" -*/ - -typedef struct -{ - /* system constants */ - INT bufferFrameStart; /*!< frame generator vs analysis buffer time alignment (currently set to 0, offset added elsewhere) */ - INT numberTimeSlots; /*!< number of SBR timeslots per frame */ - - /* will be adjusted for every frame */ - FRAME_CLASS frameClass; /*!< SBR frame class */ - INT bs_num_env; /*!< bs_num_env, number of envelopes for FIXFIX */ - INT bs_abs_bord; /*!< bs_abs_bord, absolute border for VARFIX and FIXVAR */ - INT n; /*!< number of relative borders for VARFIX and FIXVAR */ - INT p; /*!< pointer-to-transient-border */ - INT bs_rel_bord[MAX_NUM_REL]; /*!< bs_rel_bord, relative borders for all VAR */ - INT v_f[MAX_ENVELOPES_FIXVAR_VARFIX]; /*!< envelope frequency resolutions for FIXVAR and VARFIX */ - - INT bs_abs_bord_0; /*!< bs_abs_bord_0, leading absolute border for VARVAR */ - INT bs_abs_bord_1; /*!< bs_abs_bord_1, trailing absolute border for VARVAR */ - INT bs_num_rel_0; /*!< bs_num_rel_0, number of relative borders associated with leading absolute border for VARVAR */ - INT bs_num_rel_1; /*!< bs_num_rel_1, number of relative borders associated with trailing absolute border for VARVAR */ - INT bs_rel_bord_0[MAX_NUM_REL]; /*!< bs_rel_bord_0, relative borders associated with leading absolute border for VARVAR */ - INT bs_rel_bord_1[MAX_NUM_REL]; /*!< bs_rel_bord_1, relative borders associated with trailing absolute border for VARVAR */ - INT v_fLR[MAX_ENVELOPES_VARVAR]; /*!< envelope frequency resolutions for VARVAR */ - -} -SBR_GRID; -typedef SBR_GRID *HANDLE_SBR_GRID; - - - -/*! - \struct SBR_FRAME_INFO - \brief time/frequency grid description for one frame -*/ -typedef struct -{ - INT nEnvelopes; /*!< number of envelopes */ - INT borders[MAX_ENVELOPES+1]; /*!< envelope borders in SBR timeslots */ - FREQ_RES freqRes[MAX_ENVELOPES]; /*!< frequency resolution of each envelope */ - INT shortEnv; /*!< number of an envelope to be shortened (starting at 1) or 0 for no shortened envelope */ - INT nNoiseEnvelopes; /*!< number of noise floors */ - INT bordersNoise[MAX_NOISE_ENVELOPES+1];/*!< noise floor borders in SBR timeslots */ -} -SBR_FRAME_INFO; -/* WARNING: When rearranging the elements of this struct keep in mind that the static - * initializations in the corresponding C-file have to be rearranged as well! - * snd 2002/01/23 - */ -typedef SBR_FRAME_INFO *HANDLE_SBR_FRAME_INFO; - - -/*! - \struct SBR_ENVELOPE_FRAME - \brief frame generator main struct - - Contains tuning parameters, time/frequency grid description, sbr_grid() bitstream elements, and generator internal signals -*/ -typedef struct -{ - /* system constants */ - INT frameMiddleSlot; /*!< transient detector offset in SBR timeslots */ - - /* basic tuning parameters */ - INT staticFraming; /*!< 1: run static framing in time, i.e. exclusive use of bs_frame_class = FIXFIX */ - INT numEnvStatic; /*!< number of envelopes per frame for static framing */ - FREQ_RES freq_res_fixfix[2]; /*!< envelope frequency resolution to use for bs_frame_class = FIXFIX; single env and split */ - UCHAR fResTransIsLow; /*!< frequency resolution for transient frames - always low (0) or according to table (1) */ - - /* expert tuning parameters */ - const int *v_tuningSegm; /*!< segment lengths to use around transient */ - const int *v_tuningFreq; /*!< frequency resolutions to use around transient */ - INT dmin; /*!< minimum length of dependent segments */ - INT dmax; /*!< maximum length of dependent segments */ - INT allowSpread; /*!< 1: allow isolated transient to influence grid of 3 consecutive frames */ - - /* internally used signals */ - FRAME_CLASS frameClassOld; /*!< frame class used for previous frame */ - INT spreadFlag; /*!< 1: use VARVAR instead of VARFIX to follow up old transient */ - - INT v_bord[2 * MAX_ENVELOPES_VARVAR + 1]; /*!< borders for current frame and preliminary borders for next frame (fixed borders excluded) */ - INT length_v_bord; /*!< helper variable: length of v_bord */ - INT v_freq[2 * MAX_ENVELOPES_VARVAR + 1]; /*!< frequency resolutions for current frame and preliminary resolutions for next frame */ - INT length_v_freq; /*!< helper variable: length of v_freq */ - - INT v_bordFollow[MAX_ENVELOPES_VARVAR]; /*!< preliminary borders for current frame (calculated during previous frame) */ - INT length_v_bordFollow; /*!< helper variable: length of v_bordFollow */ - INT i_tranFollow; /*!< points to transient border in v_bordFollow (may be negative, see keepForFollowUp()) */ - INT i_fillFollow; /*!< points to first fill border in v_bordFollow */ - INT v_freqFollow[MAX_ENVELOPES_VARVAR]; /*!< preliminary frequency resolutions for current frame (calculated during previous frame) */ - INT length_v_freqFollow; /*!< helper variable: length of v_freqFollow */ - - - /* externally needed signals */ - SBR_GRID SbrGrid; /*!< sbr_grid() signals to be converted to bitstream elements */ - SBR_FRAME_INFO SbrFrameInfo; /*!< time/frequency grid description for one frame */ -} -SBR_ENVELOPE_FRAME; -typedef SBR_ENVELOPE_FRAME *HANDLE_SBR_ENVELOPE_FRAME; - - - -void -FDKsbrEnc_initFrameInfoGenerator ( - HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame, - INT allowSpread, - INT numEnvStatic, - INT staticFraming, - INT timeSlots, - const FREQ_RES* freq_res_fixfix - ,UCHAR fResTransIsLow, - INT ldGrid - ); - -HANDLE_SBR_FRAME_INFO -FDKsbrEnc_frameInfoGenerator (HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame, - UCHAR *v_transient_info, - UCHAR *v_transient_info_pre, - int ldGrid, - const int *v_tuning); - -#endif |