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Diffstat (limited to 'libSBRenc/src/fram_gen.cpp')
| -rw-r--r-- | libSBRenc/src/fram_gen.cpp | 2053 |
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diff --git a/libSBRenc/src/fram_gen.cpp b/libSBRenc/src/fram_gen.cpp deleted file mode 100644 index 86c3c81..0000000 --- a/libSBRenc/src/fram_gen.cpp +++ /dev/null @@ -1,2053 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -Software License for The Fraunhofer FDK AAC Codec Library for Android - -© Copyright 1995 - 2013 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 ------------------------------------------------------------------------------------------------------------ */ - -#include "fram_gen.h" -#include "sbr_misc.h" - -#include "genericStds.h" - -static const SBR_FRAME_INFO frameInfo1_2048 = { - 1, - { 0, 16}, - {FREQ_RES_HIGH}, - 0, - 1, - {0, 16} }; - -static const SBR_FRAME_INFO frameInfo2_2048 = { - 2, - { 0, 8, 16}, - {FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 8, 16} }; - -static const SBR_FRAME_INFO frameInfo4_2048 = { - 4, - { 0, 4, 8, 12, 16}, - {FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 8, 16} }; - -static const SBR_FRAME_INFO frameInfo1_2304 = { - 1, - { 0, 18}, - {FREQ_RES_HIGH}, - 0, - 1, - { 0, 18} }; - -static const SBR_FRAME_INFO frameInfo2_2304 = { - 2, - { 0, 9, 18}, - {FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 9, 18} }; - -static const SBR_FRAME_INFO frameInfo4_2304 = { - 4, - { 0, 5, 9, 14, 18}, - {FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 9, 18} }; - -static const SBR_FRAME_INFO frameInfo1_1920 = { - 1, - { 0, 15}, - {FREQ_RES_HIGH}, - 0, - 1, - { 0, 15} }; - -static const SBR_FRAME_INFO frameInfo2_1920 = { - 2, - { 0, 8, 15}, - {FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 8, 15} }; - -static const SBR_FRAME_INFO frameInfo4_1920 = { - 4, - { 0, 4, 8, 12, 15}, - {FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 8, 15} }; - -static const SBR_FRAME_INFO frameInfo1_1152 = { - 1, - { 0, 9}, - {FREQ_RES_HIGH}, - 0, - 1, - { 0, 9} }; - -static const SBR_FRAME_INFO frameInfo2_1152 = { - 2, - { 0, 5, 9}, - {FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 5, 9} }; - -static const SBR_FRAME_INFO frameInfo4_1152 = { - 4, - { 0, 2, 5, - 7, 9}, - {FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - { 0, 5, 9} }; - - -/* AACLD frame info */ -static const SBR_FRAME_INFO frameInfo1_512LD = { - 1, - {0, 8}, - {FREQ_RES_HIGH}, - 0, - 1, - {0, 8}}; - -static const SBR_FRAME_INFO frameInfo2_512LD = { - 2, - {0, 4, 8}, - {FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - {0, 4, 8}}; - -static const SBR_FRAME_INFO frameInfo4_512LD = { - 4, - {0, 2, 4, 6, 8}, - {FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH}, - 0, - 2, - {0, 4, 8}}; - -static int -calcFillLengthMax (int tranPos, /*!< input : transient position (ref: tran det) */ - int numberTimeSlots /*!< input : number of timeslots */ - ); - -static void -fillFrameTran (const int *v_tuningSegm, /*!< tuning: desired segment lengths */ - const int *v_tuningFreq, /*!< tuning: desired frequency resolutions */ - int tran, /*!< input : position of transient */ - int *v_bord, /*!< memNew: borders */ - int *length_v_bord, /*!< memNew: # borders */ - int *v_freq, /*!< memNew: frequency resolutions */ - int *length_v_freq, /*!< memNew: # frequency resolutions */ - int *bmin, /*!< hlpNew: first mandatory border */ - int *bmax /*!< hlpNew: last mandatory border */ - ); - -static void fillFramePre (INT dmax, INT *v_bord, INT *length_v_bord, - INT *v_freq, INT *length_v_freq, INT bmin, - INT rest); - -static void fillFramePost (INT *parts, INT *d, INT dmax, INT *v_bord, - INT *length_v_bord, INT *v_freq, - INT *length_v_freq, INT bmax, - INT bufferFrameStart, INT numberTimeSlots, INT fmax); - -static void fillFrameInter (INT *nL, const int *v_tuningSegm, INT *v_bord, - INT *length_v_bord, INT bmin, INT *v_freq, - INT *length_v_freq, INT *v_bordFollow, - INT *length_v_bordFollow, INT *v_freqFollow, - INT *length_v_freqFollow, INT i_fillFollow, - INT dmin, INT dmax, INT numberTimeSlots); - -static void calcFrameClass (FRAME_CLASS *frameClass, FRAME_CLASS *frameClassOld, INT tranFlag, - INT *spreadFlag); - -static void specialCase (INT *spreadFlag, INT allowSpread, INT *v_bord, - INT *length_v_bord, INT *v_freq, INT *length_v_freq, - INT *parts, INT d); - -static void calcCmonBorder (INT *i_cmon, INT *i_tran, INT *v_bord, - INT *length_v_bord, INT tran, - INT bufferFrameStart, INT numberTimeSlots); - -static void keepForFollowUp (INT *v_bordFollow, INT *length_v_bordFollow, - INT *v_freqFollow, INT *length_v_freqFollow, - INT *i_tranFollow, INT *i_fillFollow, - INT *v_bord, INT *length_v_bord, INT *v_freq, - INT i_cmon, INT i_tran, INT parts, INT numberTimeSlots); - -static void calcCtrlSignal (HANDLE_SBR_GRID hSbrGrid, FRAME_CLASS frameClass, - INT *v_bord, INT length_v_bord, INT *v_freq, - INT length_v_freq, INT i_cmon, INT i_tran, - INT spreadFlag, INT nL); - -static void ctrlSignal2FrameInfo (HANDLE_SBR_GRID hSbrGrid, - HANDLE_SBR_FRAME_INFO hFrameInfo, - INT freq_res_fixfix); - - -/* table for 8 time slot index */ -static const int envelopeTable_8 [8][5] = { -/* transientIndex nEnv, tranIdx, shortEnv, border1, border2, ... */ -/* borders from left to right side; -1 = not in use */ - /*[|T-|------]*/ { 2, 0, 0, 1, -1 }, - /*[|-T-|-----]*/ { 2, 0, 0, 2, -1 }, - /*[--|T-|----]*/ { 3, 1, 1, 2, 4 }, - /*[---|T-|---]*/ { 3, 1, 1, 3, 5 }, - /*[----|T-|--]*/ { 3, 1, 1, 4, 6 }, - /*[-----|T--|]*/ { 2, 1, 1, 5, -1 }, - /*[------|T-|]*/ { 2, 1, 1, 6, -1 }, - /*[-------|T|]*/ { 2, 1, 1, 7, -1 }, -}; - -/* table for 16 time slot index */ -static const int envelopeTable_16 [16][6] = { - /* transientIndex nEnv, tranIdx, shortEnv, border1, border2, ... */ - /* length from left to right side; -1 = not in use */ - /*[|T---|------------|]*/ { 2, 0, 0, 4, -1, -1}, - /*[|-T---|-----------|]*/ { 2, 0, 0, 5, -1, -1}, - /*[|--|T---|----------]*/ { 3, 1, 1, 2, 6, -1}, - /*[|---|T---|---------]*/ { 3, 1, 1, 3, 7, -1}, - /*[|----|T---|--------]*/ { 3, 1, 1, 4, 8, -1}, - /*[|-----|T---|-------]*/ { 3, 1, 1, 5, 9, -1}, - /*[|------|T---|------]*/ { 3, 1, 1, 6, 10, -1}, - /*[|-------|T---|-----]*/ { 3, 1, 1, 7, 11, -1}, - /*[|--------|T---|----]*/ { 3, 1, 1, 8, 12, -1}, - /*[|---------|T---|---]*/ { 3, 1, 1, 9, 13, -1}, - /*[|----------|T---|--]*/ { 3, 1, 1,10, 14, -1}, - /*[|-----------|T----|]*/ { 2, 1, 1,11, -1, -1}, - /*[|------------|T---|]*/ { 2, 1, 1,12, -1, -1}, - /*[|-------------|T--|]*/ { 2, 1, 1,13, -1, -1}, - /*[|--------------|T-|]*/ { 2, 1, 1,14, -1, -1}, - /*[|---------------|T|]*/ { 2, 1, 1,15, -1, -1}, -}; - -/* table for 15 time slot index */ -static const int envelopeTable_15 [15][6] = { - /* transientIndex nEnv, tranIdx, shortEnv, border1, border2, ... */ - /* length from left to right side; -1 = not in use */ - /*[|T---|------------]*/ { 2, 0, 0, 4, -1, -1}, - /*[|-T---|-----------]*/ { 2, 0, 0, 5, -1, -1}, - /*[|--|T---|---------]*/ { 3, 1, 1, 2, 6, -1}, - /*[|---|T---|--------]*/ { 3, 1, 1, 3, 7, -1}, - /*[|----|T---|-------]*/ { 3, 1, 1, 4, 8, -1}, - /*[|-----|T---|------]*/ { 3, 1, 1, 5, 9, -1}, - /*[|------|T---|-----]*/ { 3, 1, 1, 6, 10, -1}, - /*[|-------|T---|----]*/ { 3, 1, 1, 7, 11, -1}, - /*[|--------|T---|---]*/ { 3, 1, 1, 8, 12, -1}, - /*[|---------|T---|--]*/ { 3, 1, 1, 9, 13, -1}, - /*[|----------|T----|]*/ { 2, 1, 1,10, -1, -1}, - /*[|-----------|T---|]*/ { 2, 1, 1,11, -1, -1}, - /*[|------------|T--|]*/ { 2, 1, 1,12, -1, -1}, - /*[|-------------|T-|]*/ { 2, 1, 1,13, -1, -1}, - /*[|--------------|T|]*/ { 2, 1, 1,14, -1, -1}, -}; - -static const int minFrameTranDistance = 4; - -static const FREQ_RES freqRes_table_8[] = {FREQ_RES_LOW, FREQ_RES_LOW, FREQ_RES_LOW, FREQ_RES_LOW, FREQ_RES_LOW, - FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH}; - -static const FREQ_RES freqRes_table_16[16] = { - /* size of envelope */ -/* 0-4 */ FREQ_RES_LOW, FREQ_RES_LOW, FREQ_RES_LOW, FREQ_RES_LOW, FREQ_RES_LOW, -/* 5-9 */ FREQ_RES_LOW, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, -/* 10-16 */ FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, FREQ_RES_HIGH, - FREQ_RES_HIGH }; - -static void generateFixFixOnly ( HANDLE_SBR_FRAME_INFO hSbrFrameInfo, - HANDLE_SBR_GRID hSbrGrid, - int tranPosInternal, - int numberTimeSlots - ); - - -/*! - Functionname: FDKsbrEnc_frameInfoGenerator - - Description: produces the FRAME_INFO struct for the current frame - - Arguments: hSbrEnvFrame - pointer to sbr envelope handle - v_pre_transient_info - pointer to transient info vector - v_transient_info - pointer to previous transient info vector - v_tuning - pointer to tuning vector - - Return: frame_info - pointer to SBR_FRAME_INFO struct - -*******************************************************************************/ -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) -{ - INT numEnv, tranPosInternal=0, bmin=0, bmax=0, parts, d, i_cmon=0, i_tran=0, nL; - INT fmax = 0; - - INT *v_bord = hSbrEnvFrame->v_bord; - INT *v_freq = hSbrEnvFrame->v_freq; - INT *v_bordFollow = hSbrEnvFrame->v_bordFollow; - INT *v_freqFollow = hSbrEnvFrame->v_freqFollow; - - - INT *length_v_bordFollow = &hSbrEnvFrame->length_v_bordFollow; - INT *length_v_freqFollow = &hSbrEnvFrame->length_v_freqFollow; - INT *length_v_bord = &hSbrEnvFrame->length_v_bord; - INT *length_v_freq = &hSbrEnvFrame->length_v_freq; - INT *spreadFlag = &hSbrEnvFrame->spreadFlag; - INT *i_tranFollow = &hSbrEnvFrame->i_tranFollow; - INT *i_fillFollow = &hSbrEnvFrame->i_fillFollow; - FRAME_CLASS *frameClassOld = &hSbrEnvFrame->frameClassOld; - FRAME_CLASS frameClass = FIXFIX; - - - INT allowSpread = hSbrEnvFrame->allowSpread; - INT numEnvStatic = hSbrEnvFrame->numEnvStatic; - INT staticFraming = hSbrEnvFrame->staticFraming; - INT dmin = hSbrEnvFrame->dmin; - INT dmax = hSbrEnvFrame->dmax; - - INT bufferFrameStart = hSbrEnvFrame->SbrGrid.bufferFrameStart; - INT numberTimeSlots = hSbrEnvFrame->SbrGrid.numberTimeSlots; - INT frameMiddleSlot = hSbrEnvFrame->frameMiddleSlot; - - INT tranPos = v_transient_info[0]; - INT tranFlag = v_transient_info[1]; - - const int *v_tuningSegm = v_tuning; - const int *v_tuningFreq = v_tuning + 3; - - hSbrEnvFrame->v_tuningSegm = v_tuningSegm; - INT freq_res_fixfix = hSbrEnvFrame->freq_res_fixfix; - - if (ldGrid) { - /* in case there was a transient at the very end of the previous frame, start with a transient envelope */ - if(v_transient_info_pre[1] && (numberTimeSlots - v_transient_info_pre[0] < minFrameTranDistance)){ - tranFlag = 1; - tranPos = 0; - } - } - - /* - * Synopsis: - * - * The frame generator creates the time-/frequency-grid for one SBR frame. - * Input signals are provided by the transient detector and the frame - * splitter (transientDetectNew() & FrameSplitter() in tran_det.c). The - * framing is controlled by adjusting tuning parameters stored in - * FRAME_GEN_TUNING. The parameter values are dependent on frame lengths - * and bitrates, and may in the future be signal dependent. - * - * The envelope borders are stored for frame generator internal use in - * aBorders. The contents of aBorders represent positions along the time - * axis given in the figures in fram_gen.h (the "frame-generator" rows). - * The unit is "time slot". The figures in fram_gen.h also define the - * detection ranges for the transient detector. For every border in - * aBorders, there is a corresponding entry in aFreqRes, which defines the - * frequency resolution of the envelope following (delimited by) the - * border. - * - * When no transients are present, FIXFIX class frames are used. The - * frame splitter decides whether to use one or two envelopes in the - * FIXFIX frame. "Sparse transients" (separated by a few frames without - * transients) are handeled by [FIXVAR, VARFIX] pairs or (depending on - * tuning and transient position relative the nominal frame boundaries) - * by [FIXVAR, VARVAR, VARFIX] triples. "Tight transients" (in - * consecutive frames) are handeled by [..., VARVAR, VARVAR, ...] - * sequences. - * - * The generator assumes that transients are "sparse", and designs - * borders for [FIXVAR, VARFIX] pairs right away, where the first frame - * corresponds to the present frame. At the next call of the generator - * it is known whether the transient actually is "sparse" or not. If - * 'yes', the already calculated VARFIX borders are used. If 'no', new - * borders, meeting the requirements of the "tight" transient, are - * calculated. - * - * The generator produces two outputs: A "clear-text bitstream" stored in - * SBR_GRID, and a straight-forward representation of the grid stored in - * SBR_FRAME_INFO. The former is subsequently converted to the actual - * bitstream sbr_grid() (encodeSbrGrid() in bit_sbr.c). The latter is - * used by other encoder functions, such as the envelope estimator - * (calculateSbrEnvelope() in env_est.c) and the noise floor and missing - * harmonics detector (TonCorrParamExtr() in nf_est.c). - */ - - if (staticFraming) { - /*-------------------------------------------------------------------------- - Ignore transient detector - ---------------------------------------------------------------------------*/ - - frameClass = FIXFIX; - numEnv = numEnvStatic; /* {1,2,4,8} */ - *frameClassOld = FIXFIX; /* for change to dyn */ - hSbrEnvFrame->SbrGrid.bs_num_env = numEnv; - hSbrEnvFrame->SbrGrid.frameClass = frameClass; - } - else { - /*-------------------------------------------------------------------------- - Calculate frame class to use - ---------------------------------------------------------------------------*/ - calcFrameClass (&frameClass, frameClassOld, tranFlag, spreadFlag); - - /* patch for new frame class FIXFIXonly for AAC LD */ - if (tranFlag && ldGrid) { - frameClass = FIXFIXonly; - *frameClassOld = FIXFIX; - } - - /* - * every transient is processed below by inserting - * - * - one border at the onset of the transient - * - one or more "decay borders" (after the onset of the transient) - * - optionally one "attack border" (before the onset of the transient) - * - * those borders are referred to as "mandatory borders" and are - * defined by the 'segmentLength' array in FRAME_GEN_TUNING - * - * the frequency resolutions of the corresponding envelopes are - * defined by the 'segmentRes' array in FRAME_GEN_TUNING - */ - - /*-------------------------------------------------------------------------- - Design frame (or follow-up old design) - ---------------------------------------------------------------------------*/ - if (tranFlag) { /* Always for FixVar, often but not always for VarVar */ - /*-------------------------------------------------------------------------- - Design part of T/F-grid around the new transient - ---------------------------------------------------------------------------*/ - - tranPosInternal = frameMiddleSlot + tranPos + bufferFrameStart ; /* FH 00-06-26 */ - /* - add mandatory borders around transient - */ - - fillFrameTran ( v_tuningSegm, - v_tuningFreq, - tranPosInternal, - v_bord, - length_v_bord, - v_freq, - length_v_freq, - &bmin, - &bmax ); - - /* make sure we stay within the maximum SBR frame overlap */ - fmax = calcFillLengthMax(tranPos, numberTimeSlots); - } - - switch (frameClass) { - - case FIXFIXonly: - FDK_ASSERT(ldGrid); - tranPosInternal = tranPos; - generateFixFixOnly ( &(hSbrEnvFrame->SbrFrameInfo), - &(hSbrEnvFrame->SbrGrid), - tranPosInternal, - numberTimeSlots - ); - - return &(hSbrEnvFrame->SbrFrameInfo); - - case FIXVAR: - - /*-------------------------------------------------------------------------- - Design remaining parts of T/F-grid (assuming next frame is VarFix) - ---------------------------------------------------------------------------*/ - - /*-------------------------------------------------------------------------- - Fill region before new transient: - ---------------------------------------------------------------------------*/ - fillFramePre (dmax, v_bord, length_v_bord, v_freq, length_v_freq, - bmin, bmin - bufferFrameStart); /* FH 00-06-26 */ - - /*-------------------------------------------------------------------------- - Fill region after new transient: - ---------------------------------------------------------------------------*/ - fillFramePost (&parts, &d, dmax, v_bord, length_v_bord, v_freq, - length_v_freq, bmax, bufferFrameStart, numberTimeSlots, fmax); - - /*-------------------------------------------------------------------------- - Take care of special case: - ---------------------------------------------------------------------------*/ - if (parts == 1 && d < dmin) /* no fill, short last envelope */ - specialCase (spreadFlag, allowSpread, v_bord, length_v_bord, - v_freq, length_v_freq, &parts, d); - - /*-------------------------------------------------------------------------- - Calculate common border (split-point) - ---------------------------------------------------------------------------*/ - calcCmonBorder (&i_cmon, &i_tran, v_bord, length_v_bord, tranPosInternal, - bufferFrameStart, numberTimeSlots); /* FH 00-06-26 */ - - /*-------------------------------------------------------------------------- - Extract data for proper follow-up in next frame - ---------------------------------------------------------------------------*/ - keepForFollowUp (v_bordFollow, length_v_bordFollow, v_freqFollow, - length_v_freqFollow, i_tranFollow, i_fillFollow, - v_bord, length_v_bord, v_freq, i_cmon, i_tran, parts, numberTimeSlots); /* FH 00-06-26 */ - - /*-------------------------------------------------------------------------- - Calculate control signal - ---------------------------------------------------------------------------*/ - calcCtrlSignal (&hSbrEnvFrame->SbrGrid, frameClass, - v_bord, *length_v_bord, v_freq, *length_v_freq, - i_cmon, i_tran, *spreadFlag, DC); - break; - case VARFIX: - /*-------------------------------------------------------------------------- - Follow-up old transient - calculate control signal - ---------------------------------------------------------------------------*/ - calcCtrlSignal (&hSbrEnvFrame->SbrGrid, frameClass, - v_bordFollow, *length_v_bordFollow, v_freqFollow, - *length_v_freqFollow, DC, *i_tranFollow, - *spreadFlag, DC); - break; - case VARVAR: - if (*spreadFlag) { /* spread across three frames */ - /*-------------------------------------------------------------------------- - Follow-up old transient - calculate control signal - ---------------------------------------------------------------------------*/ - calcCtrlSignal (&hSbrEnvFrame->SbrGrid, - frameClass, v_bordFollow, *length_v_bordFollow, - v_freqFollow, *length_v_freqFollow, DC, - *i_tranFollow, *spreadFlag, DC); - - *spreadFlag = 0; - - /*-------------------------------------------------------------------------- - Extract data for proper follow-up in next frame - ---------------------------------------------------------------------------*/ - v_bordFollow[0] = hSbrEnvFrame->SbrGrid.bs_abs_bord_1 - numberTimeSlots; /* FH 00-06-26 */ - v_freqFollow[0] = 1; - *length_v_bordFollow = 1; - *length_v_freqFollow = 1; - - *i_tranFollow = -DC; - *i_fillFollow = -DC; - } - else { - /*-------------------------------------------------------------------------- - Design remaining parts of T/F-grid (assuming next frame is VarFix) - adapt or fill region before new transient: - ---------------------------------------------------------------------------*/ - fillFrameInter (&nL, v_tuningSegm, v_bord, length_v_bord, bmin, - v_freq, length_v_freq, v_bordFollow, - length_v_bordFollow, v_freqFollow, - length_v_freqFollow, *i_fillFollow, dmin, dmax, - numberTimeSlots); - - /*-------------------------------------------------------------------------- - Fill after transient: - ---------------------------------------------------------------------------*/ - fillFramePost (&parts, &d, dmax, v_bord, length_v_bord, v_freq, - length_v_freq, bmax, bufferFrameStart, numberTimeSlots, fmax); - - /*-------------------------------------------------------------------------- - Take care of special case: - ---------------------------------------------------------------------------*/ - if (parts == 1 && d < dmin) /*% no fill, short last envelope */ - specialCase (spreadFlag, allowSpread, v_bord, length_v_bord, - v_freq, length_v_freq, &parts, d); - - /*-------------------------------------------------------------------------- - Calculate common border (split-point) - ---------------------------------------------------------------------------*/ - calcCmonBorder (&i_cmon, &i_tran, v_bord, length_v_bord, tranPosInternal, - bufferFrameStart, numberTimeSlots); - - /*-------------------------------------------------------------------------- - Extract data for proper follow-up in next frame - ---------------------------------------------------------------------------*/ - keepForFollowUp (v_bordFollow, length_v_bordFollow, - v_freqFollow, length_v_freqFollow, - i_tranFollow, i_fillFollow, v_bord, - length_v_bord, v_freq, i_cmon, i_tran, parts, numberTimeSlots); - - /*-------------------------------------------------------------------------- - Calculate control signal - ---------------------------------------------------------------------------*/ - calcCtrlSignal (&hSbrEnvFrame->SbrGrid, - frameClass, v_bord, *length_v_bord, v_freq, - *length_v_freq, i_cmon, i_tran, 0, nL); - } - break; - case FIXFIX: - if (tranPos == 0) - numEnv = 1; - else - numEnv = 2; - - hSbrEnvFrame->SbrGrid.bs_num_env = numEnv; - hSbrEnvFrame->SbrGrid.frameClass = frameClass; - - break; - default: - FDK_ASSERT(0); - } - } - - /*------------------------------------------------------------------------- - Convert control signal to frame info struct - ---------------------------------------------------------------------------*/ - ctrlSignal2FrameInfo (&hSbrEnvFrame->SbrGrid, - &hSbrEnvFrame->SbrFrameInfo, - freq_res_fixfix); - - return &hSbrEnvFrame->SbrFrameInfo; -} - - -/***************************************************************************/ -/*! - \brief Gnerates frame info for FIXFIXonly frame class used for low delay version - - \return nothing - ****************************************************************************/ -static void generateFixFixOnly ( HANDLE_SBR_FRAME_INFO hSbrFrameInfo, - HANDLE_SBR_GRID hSbrGrid, - int tranPosInternal, - int numberTimeSlots - ) -{ - int nEnv, i, k=0, tranIdx; - const int *pTable = NULL; - const FREQ_RES *freqResTable = NULL; - - switch (numberTimeSlots) { - case 8: - pTable = envelopeTable_8[tranPosInternal]; - freqResTable = freqRes_table_8; - break; - case 15: - pTable = envelopeTable_15[tranPosInternal]; - freqResTable = freqRes_table_16; - break; - case 16: - pTable = envelopeTable_16[tranPosInternal]; - freqResTable = freqRes_table_16; - break; - } - - /* look number of envolpes in table */ - nEnv = pTable[0]; - /* look up envolpe distribution in table */ - for (i=1; i<nEnv; i++) - hSbrFrameInfo->borders[i] = pTable[i+2]; - - /* open and close frame border */ - hSbrFrameInfo->borders[0] = 0; - hSbrFrameInfo->borders[nEnv] = numberTimeSlots; - - /* adjust segment-frequency-resolution according to the segment-length */ - for (i=0; i<nEnv; i++){ - k = hSbrFrameInfo->borders[i+1] - hSbrFrameInfo->borders[i]; - hSbrFrameInfo->freqRes[i] = freqResTable[k]; - hSbrGrid->v_f[i] = freqResTable[k]; - } - - hSbrFrameInfo->nEnvelopes = nEnv; - hSbrFrameInfo->shortEnv = pTable[2]; - /* transient idx */ - tranIdx = pTable[1]; - - /* add noise floors */ - hSbrFrameInfo->bordersNoise[0] = 0; - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[tranIdx?tranIdx:1]; - hSbrFrameInfo->bordersNoise[2] = numberTimeSlots; - hSbrFrameInfo->nNoiseEnvelopes = 2; - - hSbrGrid->frameClass = FIXFIXonly; - hSbrGrid->bs_abs_bord = tranPosInternal; - hSbrGrid->bs_num_env = nEnv; - -} - - - -/******************************************************************************* - Functionname: FDKsbrEnc_initFrameInfoGenerator - ******************************************************************************* - - Description: - - Arguments: hSbrEnvFrame - pointer to sbr envelope handle - allowSpread - commandline parameter - numEnvStatic - commandline parameter - staticFraming - commandline parameter - - Return: none - -*******************************************************************************/ -void -FDKsbrEnc_initFrameInfoGenerator (HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame, - INT allowSpread, - INT numEnvStatic, - INT staticFraming, - INT timeSlots, - INT freq_res_fixfix - ,int ldGrid - ) - -{ /* FH 00-06-26 */ - - FDKmemclear(hSbrEnvFrame,sizeof(SBR_ENVELOPE_FRAME )); - - - /* Initialisation */ - hSbrEnvFrame->frameClassOld = FIXFIX; - hSbrEnvFrame->spreadFlag = 0; - - hSbrEnvFrame->allowSpread = allowSpread; - hSbrEnvFrame->numEnvStatic = numEnvStatic; - hSbrEnvFrame->staticFraming = staticFraming; - hSbrEnvFrame->freq_res_fixfix = freq_res_fixfix; - - hSbrEnvFrame->length_v_bord = 0; - hSbrEnvFrame->length_v_bordFollow = 0; - - hSbrEnvFrame->length_v_freq = 0; - hSbrEnvFrame->length_v_freqFollow = 0; - - hSbrEnvFrame->i_tranFollow = 0; - hSbrEnvFrame->i_fillFollow = 0; - - hSbrEnvFrame->SbrGrid.numberTimeSlots = timeSlots; - - if (ldGrid) { - /*case CODEC_AACLD:*/ - hSbrEnvFrame->dmin = 2; - hSbrEnvFrame->dmax = 16; - hSbrEnvFrame->frameMiddleSlot = FRAME_MIDDLE_SLOT_512LD; - } else - switch(timeSlots){ - case NUMBER_TIME_SLOTS_1920: - hSbrEnvFrame->dmin = 4; - hSbrEnvFrame->dmax = 12; - hSbrEnvFrame->SbrGrid.bufferFrameStart = 0; - hSbrEnvFrame->frameMiddleSlot = FRAME_MIDDLE_SLOT_1920; - break; - case NUMBER_TIME_SLOTS_2048: - hSbrEnvFrame->dmin = 4; - hSbrEnvFrame->dmax = 12; - hSbrEnvFrame->SbrGrid.bufferFrameStart = 0; - hSbrEnvFrame->frameMiddleSlot = FRAME_MIDDLE_SLOT_2048; - break; - case NUMBER_TIME_SLOTS_1152: - hSbrEnvFrame->dmin = 2; - hSbrEnvFrame->dmax = 8; - hSbrEnvFrame->SbrGrid.bufferFrameStart = 0; - hSbrEnvFrame->frameMiddleSlot = FRAME_MIDDLE_SLOT_1152; - break; - case NUMBER_TIME_SLOTS_2304: - hSbrEnvFrame->dmin = 4; - hSbrEnvFrame->dmax = 15; - hSbrEnvFrame->SbrGrid.bufferFrameStart = 0; - hSbrEnvFrame->frameMiddleSlot = FRAME_MIDDLE_SLOT_2304; - break; - default: - FDK_ASSERT(0); - } - -} - - -/******************************************************************************* - Functionname: fillFrameTran - ******************************************************************************* - - Description: Add mandatory borders, as described by the tuning vector - and the current transient position - - Arguments: - modified: - v_bord - int pointer to v_bord vector - length_v_bord - length of v_bord vector - v_freq - int pointer to v_freq vector - length_v_freq - length of v_freq vector - bmin - int pointer to bmin (call by reference) - bmax - int pointer to bmax (call by reference) - not modified: - tran - position of transient - v_tuningSegm - int pointer to v_tuningSegm vector - v_tuningFreq - int pointer to v_tuningFreq vector - - Return: none - -*******************************************************************************/ -static void -fillFrameTran (const int *v_tuningSegm, /*!< tuning: desired segment lengths */ - const int *v_tuningFreq, /*!< tuning: desired frequency resolutions */ - int tran, /*!< input : position of transient */ - int *v_bord, /*!< memNew: borders */ - int *length_v_bord, /*!< memNew: # borders */ - int *v_freq, /*!< memNew: frequency resolutions */ - int *length_v_freq, /*!< memNew: # frequency resolutions */ - int *bmin, /*!< hlpNew: first mandatory border */ - int *bmax /*!< hlpNew: last mandatory border */ - ) -{ - int bord, i; - - *length_v_bord = 0; - *length_v_freq = 0; - - /* add attack env leading border (optional) */ - if (v_tuningSegm[0]) { - /* v_bord = [(Ba)] start of attack env */ - FDKsbrEnc_AddRight (v_bord, length_v_bord, (tran - v_tuningSegm[0])); - - /* v_freq = [(Fa)] res of attack env */ - FDKsbrEnc_AddRight (v_freq, length_v_freq, v_tuningFreq[0]); - } - - /* add attack env trailing border/first decay env leading border */ - bord = tran; - FDKsbrEnc_AddRight (v_bord, length_v_bord, tran); /* v_bord = [(Ba),Bd1] */ - - /* add first decay env trailing border/2:nd decay env leading border */ - if (v_tuningSegm[1]) { - bord += v_tuningSegm[1]; - - /* v_bord = [(Ba),Bd1,Bd2] */ - FDKsbrEnc_AddRight (v_bord, length_v_bord, bord); - - /* v_freq = [(Fa),Fd1] */ - FDKsbrEnc_AddRight (v_freq, length_v_freq, v_tuningFreq[1]); - } - - /* add 2:nd decay env trailing border (optional) */ - if (v_tuningSegm[2] != 0) { - bord += v_tuningSegm[2]; - - /* v_bord = [(Ba),Bd1, Bd2,(Bd3)] */ - FDKsbrEnc_AddRight (v_bord, length_v_bord, bord); - - /* v_freq = [(Fa),Fd1,(Fd2)] */ - FDKsbrEnc_AddRight (v_freq, length_v_freq, v_tuningFreq[2]); - } - - /* v_freq = [(Fa),Fd1,(Fd2),1] */ - FDKsbrEnc_AddRight (v_freq, length_v_freq, 1); - - - /* calc min and max values of mandatory borders */ - *bmin = v_bord[0]; - for (i = 0; i < *length_v_bord; i++) - if (v_bord[i] < *bmin) - *bmin = v_bord[i]; - - *bmax = v_bord[0]; - for (i = 0; i < *length_v_bord; i++) - if (v_bord[i] > *bmax) - *bmax = v_bord[i]; - -} - - - -/******************************************************************************* - Functionname: fillFramePre - ******************************************************************************* - - Description: Add borders before mandatory borders, if needed - - Arguments: - modified: - v_bord - int pointer to v_bord vector - length_v_bord - length of v_bord vector - v_freq - int pointer to v_freq vector - length_v_freq - length of v_freq vector - not modified: - dmax - int value - bmin - int value - rest - int value - - Return: none - -*******************************************************************************/ -static void -fillFramePre (INT dmax, - INT *v_bord, INT *length_v_bord, - INT *v_freq, INT *length_v_freq, - INT bmin, INT rest) -{ - /* - input state: - v_bord = [(Ba),Bd1, Bd2 ,(Bd3)] - v_freq = [(Fa),Fd1,(Fd2),1 ] - */ - - INT parts, d, j, S, s = 0, segm, bord; - - /* - start with one envelope - */ - - parts = 1; - d = rest; - - /* - calc # of additional envelopes and corresponding lengths - */ - - while (d > dmax) { - parts++; - - segm = rest / parts; - S = (segm - 2)>>1; - s = fixMin (8, 2 * S + 2); - d = rest - (parts - 1) * s; - } - - /* - add borders before mandatory borders - */ - - bord = bmin; - - for (j = 0; j <= parts - 2; j++) { - bord = bord - s; - - /* v_bord = [...,(Bf),(Ba),Bd1, Bd2 ,(Bd3)] */ - FDKsbrEnc_AddLeft (v_bord, length_v_bord, bord); - - /* v_freq = [...,(1 ),(Fa),Fd1,(Fd2), 1 ] */ - FDKsbrEnc_AddLeft (v_freq, length_v_freq, 1); - } -} - -/***************************************************************************/ -/*! - \brief Overlap control - - Calculate max length of trailing fill segments, such that we always get a - border within the frame overlap region - - \return void - -****************************************************************************/ -static int -calcFillLengthMax (int tranPos, /*!< input : transient position (ref: tran det) */ - int numberTimeSlots /*!< input : number of timeslots */ - ) -{ - int fmax; - - /* - calculate transient position within envelope buffer - */ - switch (numberTimeSlots) - { - case NUMBER_TIME_SLOTS_2048: - if (tranPos < 4) - fmax = 6; - else if (tranPos == 4 || tranPos == 5) - fmax = 4; - else - fmax = 8; - break; - - case NUMBER_TIME_SLOTS_1920: - if (tranPos < 4) - fmax = 5; - else if (tranPos == 4 || tranPos == 5) - fmax = 3; - else - fmax = 7; - break; - - default: - fmax = 8; - break; - } - - return fmax; -} - -/******************************************************************************* - Functionname: fillFramePost - ******************************************************************************* - - Description: -Add borders after mandatory borders, if needed - Make a preliminary design of next frame, - assuming no transient is present there - - Arguments: - modified: - parts - int pointer to parts (call by reference) - d - int pointer to d (call by reference) - v_bord - int pointer to v_bord vector - length_v_bord - length of v_bord vector - v_freq - int pointer to v_freq vector - length_v_freq - length of v_freq vector - not modified: - bmax - int value - dmax - int value - - Return: none - -*******************************************************************************/ -static void -fillFramePost (INT *parts, INT *d, INT dmax, INT *v_bord, INT *length_v_bord, - INT *v_freq, INT *length_v_freq, INT bmax, - INT bufferFrameStart, INT numberTimeSlots, INT fmax) -{ - INT j, rest, segm, S, s = 0, bord; - - /* - input state: - v_bord = [...,(Bf),(Ba),Bd1, Bd2 ,(Bd3)] - v_freq = [...,(1 ),(Fa),Fd1,(Fd2),1 ] - */ - - rest = bufferFrameStart + 2 * numberTimeSlots - bmax; - *d = rest; - - if (*d > 0) { - *parts = 1; /* start with one envelope */ - - /* calc # of additional envelopes and corresponding lengths */ - - while (*d > dmax) { - *parts = *parts + 1; - - segm = rest / (*parts); - S = (segm - 2)>>1; - s = fixMin (fmax, 2 * S + 2); - *d = rest - (*parts - 1) * s; - } - - /* add borders after mandatory borders */ - - bord = bmax; - for (j = 0; j <= *parts - 2; j++) { - bord += s; - - /* v_bord = [...,(Bf),(Ba),Bd1, Bd2 ,(Bd3),(Bf)] */ - FDKsbrEnc_AddRight (v_bord, length_v_bord, bord); - - /* v_freq = [...,(1 ),(Fa),Fd1,(Fd2), 1 , 1! ,1] */ - FDKsbrEnc_AddRight (v_freq, length_v_freq, 1); - } - } - else { - *parts = 1; - - /* remove last element from v_bord and v_freq */ - - *length_v_bord = *length_v_bord - 1; - *length_v_freq = *length_v_freq - 1; - - } -} - - - -/******************************************************************************* - Functionname: fillFrameInter - ******************************************************************************* - - Description: - - Arguments: nL - - v_tuningSegm - - v_bord - - length_v_bord - - bmin - - v_freq - - length_v_freq - - v_bordFollow - - length_v_bordFollow - - v_freqFollow - - length_v_freqFollow - - i_fillFollow - - dmin - - dmax - - - Return: none - -*******************************************************************************/ -static void -fillFrameInter (INT *nL, const int *v_tuningSegm, INT *v_bord, INT *length_v_bord, - INT bmin, INT *v_freq, INT *length_v_freq, INT *v_bordFollow, - INT *length_v_bordFollow, INT *v_freqFollow, - INT *length_v_freqFollow, INT i_fillFollow, INT dmin, - INT dmax, INT numberTimeSlots) -{ - INT middle, b_new, numBordFollow, bordMaxFollow, i; - - if (numberTimeSlots != NUMBER_TIME_SLOTS_1152) { - - /* % remove fill borders: */ - if (i_fillFollow >= 1) { - *length_v_bordFollow = i_fillFollow; - *length_v_freqFollow = i_fillFollow; - } - - numBordFollow = *length_v_bordFollow; - bordMaxFollow = v_bordFollow[numBordFollow - 1]; - - /* remove even more borders if needed */ - middle = bmin - bordMaxFollow; - while (middle < 0) { - numBordFollow--; - bordMaxFollow = v_bordFollow[numBordFollow - 1]; - middle = bmin - bordMaxFollow; - } - - *length_v_bordFollow = numBordFollow; - *length_v_freqFollow = numBordFollow; - *nL = numBordFollow - 1; - - b_new = *length_v_bord; - - - if (middle <= dmax) { - if (middle >= dmin) { /* concatenate */ - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, *length_v_bordFollow); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, *length_v_freqFollow); - } - - else { - if (v_tuningSegm[0] != 0) { /* remove one new border and concatenate */ - *length_v_bord = b_new - 1; - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, - *length_v_bordFollow); - - *length_v_freq = b_new - 1; - FDKsbrEnc_AddVecLeft (v_freq + 1, length_v_freq, v_freqFollow, - *length_v_freqFollow); - } - else { - if (*length_v_bordFollow > 1) { /* remove one old border and concatenate */ - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, - *length_v_bordFollow - 1); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, - *length_v_bordFollow - 1); - - *nL = *nL - 1; - } - else { /* remove new "transient" border and concatenate */ - - for (i = 0; i < *length_v_bord - 1; i++) - v_bord[i] = v_bord[i + 1]; - - for (i = 0; i < *length_v_freq - 1; i++) - v_freq[i] = v_freq[i + 1]; - - *length_v_bord = b_new - 1; - *length_v_freq = b_new - 1; - - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, - *length_v_bordFollow); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, - *length_v_freqFollow); - } - } - } - } - else { /* middle > dmax */ - - fillFramePre (dmax, v_bord, length_v_bord, v_freq, length_v_freq, bmin, - middle); - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, *length_v_bordFollow); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, *length_v_freqFollow); - } - - - } - else { /* numberTimeSlots==NUMBER_TIME_SLOTS_1152 */ - - INT l,m; - - - /*------------------------------------------------------------------------ - remove fill borders - ------------------------------------------------------------------------*/ - if (i_fillFollow >= 1) { - *length_v_bordFollow = i_fillFollow; - *length_v_freqFollow = i_fillFollow; - } - - numBordFollow = *length_v_bordFollow; - bordMaxFollow = v_bordFollow[numBordFollow - 1]; - - /*------------------------------------------------------------------------ - remove more borders if necessary to eliminate overlap - ------------------------------------------------------------------------*/ - - /* check for overlap */ - middle = bmin - bordMaxFollow; - - /* intervals: - i) middle < 0 : overlap, must remove borders - ii) 0 <= middle < dmin : no overlap but too tight, must remove borders - iii) dmin <= middle <= dmax : ok, just concatenate - iv) dmax <= middle : too wide, must add borders - */ - - /* first remove old non-fill-borders... */ - while (middle < 0) { - - /* ...but don't remove all of them */ - if (numBordFollow == 1) - break; - - numBordFollow--; - bordMaxFollow = v_bordFollow[numBordFollow - 1]; - middle = bmin - bordMaxFollow; - } - - /* if this isn't enough, remove new non-fill borders */ - if (middle < 0) - { - for (l = 0, m = 0 ; l < *length_v_bord ; l++) - { - if(v_bord[l]> bordMaxFollow) - { - v_bord[m] = v_bord[l]; - v_freq[m] = v_freq[l]; - m++; - } - } - - *length_v_bord = l; - *length_v_freq = l; - - bmin = v_bord[0]; - - } - - /*------------------------------------------------------------------------ - update modified follow-up data - ------------------------------------------------------------------------*/ - - *length_v_bordFollow = numBordFollow; - *length_v_freqFollow = numBordFollow; - - /* left relative borders correspond to follow-up */ - *nL = numBordFollow - 1; - - /*------------------------------------------------------------------------ - take care of intervals ii through iv - ------------------------------------------------------------------------*/ - - /* now middle should be >= 0 */ - middle = bmin - bordMaxFollow; - - if (middle <= dmin) /* (ii) */ - { - b_new = *length_v_bord; - - if (v_tuningSegm[0] != 0) - { - /* remove new "luxury" border and concatenate */ - *length_v_bord = b_new - 1; - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, - *length_v_bordFollow); - - *length_v_freq = b_new - 1; - FDKsbrEnc_AddVecLeft (v_freq + 1, length_v_freq, v_freqFollow, - *length_v_freqFollow); - - } - else if (*length_v_bordFollow > 1) - { - /* remove old border and concatenate */ - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, - *length_v_bordFollow - 1); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, - *length_v_bordFollow - 1); - - *nL = *nL - 1; - } - else - { - /* remove new border and concatenate */ - for (i = 0; i < *length_v_bord - 1; i++) - v_bord[i] = v_bord[i + 1]; - - for (i = 0; i < *length_v_freq - 1; i++) - v_freq[i] = v_freq[i + 1]; - - *length_v_bord = b_new - 1; - *length_v_freq = b_new - 1; - - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, - *length_v_bordFollow); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, - *length_v_freqFollow); - } - } - else if ((middle >= dmin) && (middle <= dmax)) /* (iii) */ - { - /* concatenate */ - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, *length_v_bordFollow); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, *length_v_freqFollow); - - } - else /* (iv) */ - { - fillFramePre (dmax, v_bord, length_v_bord, v_freq, length_v_freq, bmin, - middle); - FDKsbrEnc_AddVecLeft (v_bord, length_v_bord, v_bordFollow, *length_v_bordFollow); - FDKsbrEnc_AddVecLeft (v_freq, length_v_freq, v_freqFollow, *length_v_freqFollow); - } - } -} - - - -/******************************************************************************* - Functionname: calcFrameClass - ******************************************************************************* - - Description: - - Arguments: INT* frameClass, INT* frameClassOld, INT tranFlag, INT* spreadFlag) - - Return: none - -*******************************************************************************/ -static void -calcFrameClass (FRAME_CLASS *frameClass, FRAME_CLASS *frameClassOld, INT tranFlag, - INT *spreadFlag) -{ - - switch (*frameClassOld) { - case FIXFIXonly: - case FIXFIX: - if (tranFlag) *frameClass = FIXVAR; - else *frameClass = FIXFIX; - break; - case FIXVAR: - if (tranFlag) { *frameClass = VARVAR; *spreadFlag = 0; } - else { - if (*spreadFlag) *frameClass = VARVAR; - else *frameClass = VARFIX; - } - break; - case VARFIX: - if (tranFlag) *frameClass = FIXVAR; - else *frameClass = FIXFIX; - break; - case VARVAR: - if (tranFlag) { *frameClass = VARVAR; *spreadFlag = 0; } - else { - if (*spreadFlag) *frameClass = VARVAR; - else *frameClass = VARFIX; - } - break; - }; - - *frameClassOld = *frameClass; -} - - - -/******************************************************************************* - Functionname: specialCase - ******************************************************************************* - - Description: - - Arguments: spreadFlag - allowSpread - v_bord - length_v_bord - v_freq - length_v_freq - parts - d - - Return: none - -*******************************************************************************/ -static void -specialCase (INT *spreadFlag, INT allowSpread, INT *v_bord, - INT *length_v_bord, INT *v_freq, INT *length_v_freq, INT *parts, - INT d) -{ - INT L; - - L = *length_v_bord; - - if (allowSpread) { /* add one "step 8" */ - *spreadFlag = 1; - FDKsbrEnc_AddRight (v_bord, length_v_bord, v_bord[L - 1] + 8); - FDKsbrEnc_AddRight (v_freq, length_v_freq, 1); - (*parts)++; - } - else { - if (d == 1) { /* stretch one slot */ - *length_v_bord = L - 1; - *length_v_freq = L - 1; - } - else { - if ((v_bord[L - 1] - v_bord[L - 2]) > 2) { /* compress one quant step */ - v_bord[L - 1] = v_bord[L - 1] - 2; - v_freq[*length_v_freq - 1] = 0; /* use low res for short segment */ - } - } - } -} - - - -/******************************************************************************* - Functionname: calcCmonBorder - ******************************************************************************* - - Description: - - Arguments: i_cmon - i_tran - v_bord - length_v_bord - tran - - Return: none - -*******************************************************************************/ -static void -calcCmonBorder (INT *i_cmon, INT *i_tran, INT *v_bord, INT *length_v_bord, - INT tran, INT bufferFrameStart, INT numberTimeSlots) -{ /* FH 00-06-26 */ - INT i; - - for (i = 0; i < *length_v_bord; i++) - if (v_bord[i] >= bufferFrameStart + numberTimeSlots) { /* FH 00-06-26 */ - *i_cmon = i; - break; - } - - /* keep track of transient: */ - for (i = 0; i < *length_v_bord; i++) - if (v_bord[i] >= tran) { - *i_tran = i; - break; - } - else - *i_tran = EMPTY; -} - -/******************************************************************************* - Functionname: keepForFollowUp - ******************************************************************************* - - Description: - - Arguments: v_bordFollow - length_v_bordFollow - v_freqFollow - length_v_freqFollow - i_tranFollow - i_fillFollow - v_bord - length_v_bord - v_freq - i_cmon - i_tran - parts) - - Return: none - -*******************************************************************************/ -static void -keepForFollowUp (INT *v_bordFollow, INT *length_v_bordFollow, - INT *v_freqFollow, INT *length_v_freqFollow, - INT *i_tranFollow, INT *i_fillFollow, INT *v_bord, - INT *length_v_bord, INT *v_freq, INT i_cmon, INT i_tran, - INT parts, INT numberTimeSlots) -{ /* FH 00-06-26 */ - INT L, i, j; - - L = *length_v_bord; - - (*length_v_bordFollow) = 0; - (*length_v_freqFollow) = 0; - - for (j = 0, i = i_cmon; i < L; i++, j++) { - v_bordFollow[j] = v_bord[i] - numberTimeSlots; /* FH 00-06-26 */ - v_freqFollow[j] = v_freq[i]; - (*length_v_bordFollow)++; - (*length_v_freqFollow)++; - } - if (i_tran != EMPTY) - *i_tranFollow = i_tran - i_cmon; - else - *i_tranFollow = EMPTY; - *i_fillFollow = L - (parts - 1) - i_cmon; - -} - -/******************************************************************************* - Functionname: calcCtrlSignal - ******************************************************************************* - - Description: - - Arguments: hSbrGrid - frameClass - v_bord - length_v_bord - v_freq - length_v_freq - i_cmon - i_tran - spreadFlag - nL - - Return: none - -*******************************************************************************/ -static void -calcCtrlSignal (HANDLE_SBR_GRID hSbrGrid, - FRAME_CLASS frameClass, INT *v_bord, INT length_v_bord, INT *v_freq, - INT length_v_freq, INT i_cmon, INT i_tran, INT spreadFlag, - INT nL) -{ - - - INT i, r, a, n, p, b, aL, aR, ntot, nmax, nR; - - INT *v_f = hSbrGrid->v_f; - INT *v_fLR = hSbrGrid->v_fLR; - INT *v_r = hSbrGrid->bs_rel_bord; - INT *v_rL = hSbrGrid->bs_rel_bord_0; - INT *v_rR = hSbrGrid->bs_rel_bord_1; - - INT length_v_r = 0; - INT length_v_rR = 0; - INT length_v_rL = 0; - - switch (frameClass) { - case FIXVAR: - /* absolute border: */ - - a = v_bord[i_cmon]; - - /* relative borders: */ - length_v_r = 0; - i = i_cmon; - - while (i >= 1) { - r = v_bord[i] - v_bord[i - 1]; - FDKsbrEnc_AddRight (v_r, &length_v_r, r); - i--; - } - - - /* number of relative borders: */ - n = length_v_r; - - - /* freq res: */ - for (i = 0; i < i_cmon; i++) - v_f[i] = v_freq[i_cmon - 1 - i]; - v_f[i_cmon] = 1; - - /* pointer: */ - p = (i_cmon >= i_tran && i_tran != EMPTY) ? (i_cmon - i_tran + 1) : (0) ; - - hSbrGrid->frameClass = frameClass; - hSbrGrid->bs_abs_bord = a; - hSbrGrid->n = n; - hSbrGrid->p = p; - - break; - case VARFIX: - /* absolute border: */ - a = v_bord[0]; - - /* relative borders: */ - length_v_r = 0; - - for (i = 1; i < length_v_bord; i++) { - r = v_bord[i] - v_bord[i - 1]; - FDKsbrEnc_AddRight (v_r, &length_v_r, r); - } - - /* number of relative borders: */ - n = length_v_r; - - /* freq res: */ - FDKmemcpy (v_f, v_freq, length_v_freq * sizeof (INT)); - - - /* pointer: */ - p = (i_tran >= 0 && i_tran != EMPTY) ? (i_tran + 1) : (0) ; - - hSbrGrid->frameClass = frameClass; - hSbrGrid->bs_abs_bord = a; - hSbrGrid->n = n; - hSbrGrid->p = p; - - break; - case VARVAR: - if (spreadFlag) { - /* absolute borders: */ - b = length_v_bord; - - aL = v_bord[0]; - aR = v_bord[b - 1]; - - - /* number of relative borders: */ - ntot = b - 2; - - nmax = 2; /* n: {0,1,2} */ - if (ntot > nmax) { - nL = nmax; - nR = ntot - nmax; - } - else { - nL = ntot; - nR = 0; - } - - /* relative borders: */ - length_v_rL = 0; - for (i = 1; i <= nL; i++) { - r = v_bord[i] - v_bord[i - 1]; - FDKsbrEnc_AddRight (v_rL, &length_v_rL, r); - } - - length_v_rR = 0; - i = b - 1; - while (i >= b - nR) { - r = v_bord[i] - v_bord[i - 1]; - FDKsbrEnc_AddRight (v_rR, &length_v_rR, r); - i--; - } - - /* pointer (only one due to constraint in frame info): */ - p = (i_tran > 0 && i_tran != EMPTY) ? (b - i_tran) : (0) ; - - /* freq res: */ - - for (i = 0; i < b - 1; i++) - v_fLR[i] = v_freq[i]; - } - else { - - length_v_bord = i_cmon + 1; - length_v_freq = i_cmon + 1; - - - /* absolute borders: */ - b = length_v_bord; - - aL = v_bord[0]; - aR = v_bord[b - 1]; - - /* number of relative borders: */ - ntot = b - 2; - nR = ntot - nL; - - /* relative borders: */ - length_v_rL = 0; - for (i = 1; i <= nL; i++) { - r = v_bord[i] - v_bord[i - 1]; - FDKsbrEnc_AddRight (v_rL, &length_v_rL, r); - } - - length_v_rR = 0; - i = b - 1; - while (i >= b - nR) { - r = v_bord[i] - v_bord[i - 1]; - FDKsbrEnc_AddRight (v_rR, &length_v_rR, r); - i--; - } - - /* pointer (only one due to constraint in frame info): */ - p = (i_cmon >= i_tran && i_tran != EMPTY) ? (i_cmon - i_tran + 1) : (0) ; - - /* freq res: */ - for (i = 0; i < b - 1; i++) - v_fLR[i] = v_freq[i]; - } - - hSbrGrid->frameClass = frameClass; - hSbrGrid->bs_abs_bord_0 = aL; - hSbrGrid->bs_abs_bord_1 = aR; - hSbrGrid->bs_num_rel_0 = nL; - hSbrGrid->bs_num_rel_1 = nR; - hSbrGrid->p = p; - - break; - - default: - /* do nothing */ - break; - } -} - -/******************************************************************************* - Functionname: createDefFrameInfo - ******************************************************************************* - - Description: Copies the default (static) frameInfo structs to the frameInfo - passed by reference; only used for FIXFIX frames - - Arguments: hFrameInfo - HANLDE_SBR_FRAME_INFO - nEnv - INT - nTimeSlots - INT - - Return: none; hSbrFrameInfo contains a copy of the default frameInfo - - Written: Andreas Schneider - Revised: -*******************************************************************************/ -static void -createDefFrameInfo(HANDLE_SBR_FRAME_INFO hSbrFrameInfo, INT nEnv, INT nTimeSlots) -{ - switch (nEnv) { - case 1: - switch (nTimeSlots) { - case NUMBER_TIME_SLOTS_1920: - FDKmemcpy (hSbrFrameInfo, &frameInfo1_1920, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_2048: - FDKmemcpy (hSbrFrameInfo, &frameInfo1_2048, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_1152: - FDKmemcpy (hSbrFrameInfo, &frameInfo1_1152, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_2304: - FDKmemcpy (hSbrFrameInfo, &frameInfo1_2304, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_512LD: - FDKmemcpy (hSbrFrameInfo, &frameInfo1_512LD, sizeof (SBR_FRAME_INFO)); - break; - default: - FDK_ASSERT(0); - } - break; - case 2: - switch (nTimeSlots) { - case NUMBER_TIME_SLOTS_1920: - FDKmemcpy (hSbrFrameInfo, &frameInfo2_1920, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_2048: - FDKmemcpy (hSbrFrameInfo, &frameInfo2_2048, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_1152: - FDKmemcpy (hSbrFrameInfo, &frameInfo2_1152, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_2304: - FDKmemcpy (hSbrFrameInfo, &frameInfo2_2304, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_512LD: - FDKmemcpy (hSbrFrameInfo, &frameInfo2_512LD, sizeof (SBR_FRAME_INFO)); - break; - default: - FDK_ASSERT(0); - } - break; - case 4: - switch (nTimeSlots) { - case NUMBER_TIME_SLOTS_1920: - FDKmemcpy (hSbrFrameInfo, &frameInfo4_1920, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_2048: - FDKmemcpy (hSbrFrameInfo, &frameInfo4_2048, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_1152: - FDKmemcpy (hSbrFrameInfo, &frameInfo4_1152, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_2304: - FDKmemcpy (hSbrFrameInfo, &frameInfo4_2304, sizeof (SBR_FRAME_INFO)); - break; - case NUMBER_TIME_SLOTS_512LD: - FDKmemcpy (hSbrFrameInfo, &frameInfo4_512LD, sizeof (SBR_FRAME_INFO)); - break; - default: - FDK_ASSERT(0); - } - break; - default: - FDK_ASSERT(0); - } -} - - -/******************************************************************************* - Functionname: ctrlSignal2FrameInfo - ******************************************************************************* - - Description: Calculates frame_info struct from control signal. - - Arguments: hSbrGrid - source - hSbrFrameInfo - destination - - Return: void; hSbrFrameInfo contains the updated FRAME_INFO struct - -*******************************************************************************/ -static void -ctrlSignal2FrameInfo (HANDLE_SBR_GRID hSbrGrid, - HANDLE_SBR_FRAME_INFO hSbrFrameInfo, - INT freq_res_fixfix) -{ - INT nEnv = 0, border = 0, i, k, p /*?*/; - INT *v_r = hSbrGrid->bs_rel_bord; - INT *v_f = hSbrGrid->v_f; - - FRAME_CLASS frameClass = hSbrGrid->frameClass; - INT bufferFrameStart = hSbrGrid->bufferFrameStart; - INT numberTimeSlots = hSbrGrid->numberTimeSlots; - - switch (frameClass) { - case FIXFIX: - createDefFrameInfo(hSbrFrameInfo, hSbrGrid->bs_num_env, numberTimeSlots); - - /* At this point all frequency resolutions are set to FREQ_RES_HIGH, so - * only if freq_res_fixfix is set to FREQ_RES_LOW, they all have to be - * changed. - * snd */ - if (freq_res_fixfix == FREQ_RES_LOW) { - for (i = 0; i < hSbrFrameInfo->nEnvelopes; i++) { - hSbrFrameInfo->freqRes[i] = FREQ_RES_LOW; - } - } - /* ELD: store current frequency resolution */ - hSbrGrid->v_f[0] = hSbrFrameInfo->freqRes[0]; - break; - - case FIXVAR: - case VARFIX: - nEnv = hSbrGrid->n + 1; /* read n [SBR_NUM_BITS bits] */ /*? snd*/ - FDK_ASSERT(nEnv <= MAX_ENVELOPES_FIXVAR_VARFIX); - - hSbrFrameInfo->nEnvelopes = nEnv; - - border = hSbrGrid->bs_abs_bord; /* read the absolute border */ - - if (nEnv == 1) - hSbrFrameInfo->nNoiseEnvelopes = 1; - else - hSbrFrameInfo->nNoiseEnvelopes = 2; - - break; - - default: - /* do nothing */ - break; - } - - switch (frameClass) { - case FIXVAR: - hSbrFrameInfo->borders[0] = bufferFrameStart; /* start-position of 1st envelope */ - - hSbrFrameInfo->borders[nEnv] = border; - - for (k = 0, i = nEnv - 1; k < nEnv - 1; k++, i--) { - border -= v_r[k]; - hSbrFrameInfo->borders[i] = border; - } - - /* make either envelope nr. nEnv + 1 - p short; or don't shorten if p == 0 */ - p = hSbrGrid->p; - if (p == 0) { - hSbrFrameInfo->shortEnv = 0; - } else { - hSbrFrameInfo->shortEnv = nEnv + 1 - p; - } - - for (k = 0, i = nEnv - 1; k < nEnv; k++, i--) { - hSbrFrameInfo->freqRes[i] = (FREQ_RES)v_f[k]; - } - - /* if either there is no short envelope or the last envelope is short... */ - if (p == 0 || p == 1) { - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[nEnv - 1]; - } else { - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[hSbrFrameInfo->shortEnv]; - } - - break; - - case VARFIX: - /* in this case 'border' indicates the start of the 1st envelope */ - hSbrFrameInfo->borders[0] = border; - - for (k = 0; k < nEnv - 1; k++) { - border += v_r[k]; - hSbrFrameInfo->borders[k + 1] = border; - } - - hSbrFrameInfo->borders[nEnv] = bufferFrameStart + numberTimeSlots; - - p = hSbrGrid->p; - if (p == 0 || p == 1) { - hSbrFrameInfo->shortEnv = 0; - } else { - hSbrFrameInfo->shortEnv = p - 1; - } - - for (k = 0; k < nEnv; k++) { - hSbrFrameInfo->freqRes[k] = (FREQ_RES)v_f[k]; - } - - switch (p) { - case 0: - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[1]; - break; - case 1: - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[nEnv - 1]; - break; - default: - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[hSbrFrameInfo->shortEnv]; - break; - } - break; - - case VARVAR: - nEnv = hSbrGrid->bs_num_rel_0 + hSbrGrid->bs_num_rel_1 + 1; - FDK_ASSERT(nEnv <= MAX_ENVELOPES_VARVAR); /* just to be sure */ - hSbrFrameInfo->nEnvelopes = nEnv; - - hSbrFrameInfo->borders[0] = border = hSbrGrid->bs_abs_bord_0; - - for (k = 0, i = 1; k < hSbrGrid->bs_num_rel_0; k++, i++) { - border += hSbrGrid->bs_rel_bord_0[k]; - hSbrFrameInfo->borders[i] = border; - } - - border = hSbrGrid->bs_abs_bord_1; - hSbrFrameInfo->borders[nEnv] = border; - - for (k = 0, i = nEnv - 1; k < hSbrGrid->bs_num_rel_1; k++, i--) { - border -= hSbrGrid->bs_rel_bord_1[k]; - hSbrFrameInfo->borders[i] = border; - } - - p = hSbrGrid->p; - if (p == 0) { - hSbrFrameInfo->shortEnv = 0; - } else { - hSbrFrameInfo->shortEnv = nEnv + 1 - p; - } - - for (k = 0; k < nEnv; k++) { - hSbrFrameInfo->freqRes[k] = (FREQ_RES)hSbrGrid->v_fLR[k]; - } - - if (nEnv == 1) { - hSbrFrameInfo->nNoiseEnvelopes = 1; - hSbrFrameInfo->bordersNoise[0] = hSbrGrid->bs_abs_bord_0; - hSbrFrameInfo->bordersNoise[1] = hSbrGrid->bs_abs_bord_1; - } else { - hSbrFrameInfo->nNoiseEnvelopes = 2; - hSbrFrameInfo->bordersNoise[0] = hSbrGrid->bs_abs_bord_0; - - if (p == 0 || p == 1) { - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[nEnv - 1]; - } else { - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[hSbrFrameInfo->shortEnv]; - } - hSbrFrameInfo->bordersNoise[2] = hSbrGrid->bs_abs_bord_1; - } - break; - - default: - /* do nothing */ - break; - } - - if (frameClass == VARFIX || frameClass == FIXVAR) { - hSbrFrameInfo->bordersNoise[0] = hSbrFrameInfo->borders[0]; - if (nEnv == 1) { - hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[nEnv]; - } else { - hSbrFrameInfo->bordersNoise[2] = hSbrFrameInfo->borders[nEnv]; - } - } -} - |