From 6cfabd35363c3ef5e3b209b867169a500b3ccc3c Mon Sep 17 00:00:00 2001 From: Fraunhofer IIS FDK Date: Mon, 26 Feb 2018 20:17:00 +0100 Subject: Upgrade to FDKv2 Bug: 71430241 Test: CTS DecoderTest and DecoderTestAacDrc original-Change-Id: Iaa20f749b8a04d553b20247cfe1a8930ebbabe30 Apply clang-format also on header files. original-Change-Id: I14de1ef16bbc79ec0283e745f98356a10efeb2e4 Fixes for MPEG-D DRC original-Change-Id: If1de2d74bbbac84b3f67de3b88b83f6a23b8a15c Catch unsupported tw_mdct at an early stage original-Change-Id: Ied9dd00d754162a0e3ca1ae3e6b854315d818afe Fixing PVC transition frames original-Change-Id: Ib75725abe39252806c32d71176308f2c03547a4e Move qmf bands sanity check original-Change-Id: Iab540c3013c174d9490d2ae100a4576f51d8dbc4 Initialize scaling variable original-Change-Id: I3c4087101b70e998c71c1689b122b0d7762e0f9e Add 16 qmf band configuration to getSlotNrgHQ() original-Change-Id: I49a5d30f703a1b126ff163df9656db2540df21f1 Always apply byte alignment at the end of the AudioMuxElement original-Change-Id: I42d560287506d65d4c3de8bfe3eb9a4ebeb4efc7 Setup SBR element only if no parse error exists original-Change-Id: I1915b73704bc80ab882b9173d6bec59cbd073676 Additional array index check in HCR original-Change-Id: I18cc6e501ea683b5009f1bbee26de8ddd04d8267 Fix fade-in index selection in concealment module original-Change-Id: Ibf802ed6ed8c05e9257e1f3b6d0ac1162e9b81c1 Enable explicit backward compatible parser for AAC_LD original-Change-Id: I27e9c678dcb5d40ed760a6d1e06609563d02482d Skip spatial specific config in explicit backward compatible ASC original-Change-Id: Iff7cc365561319e886090cedf30533f562ea4d6e Update flags description in decoder API original-Change-Id: I9a5b4f8da76bb652f5580cbd3ba9760425c43830 Add QMF domain reset function original-Change-Id: I4f89a8a2c0277d18103380134e4ed86996e9d8d6 DRC upgrade v2.1.0 original-Change-Id: I5731c0540139dab220094cd978ef42099fc45b74 Fix integer overflow in sqrtFixp_lookup() original-Change-Id: I429a6f0d19aa2cc957e0f181066f0ca73968c914 Fix integer overflow in invSqrtNorm2() original-Change-Id: I84de5cbf9fb3adeb611db203fe492fabf4eb6155 Fix integer overflow in GenerateRandomVector() original-Change-Id: I3118a641008bd9484d479e5b0b1ee2b5d7d44d74 Fix integer overflow in adjustTimeSlot_EldGrid() original-Change-Id: I29d503c247c5c8282349b79df940416a512fb9d5 Fix integer overflow in FDKsbrEnc_codeEnvelope() original-Change-Id: I6b34b61ebb9d525b0c651ed08de2befc1f801449 Follow-up on: Fix integer overflow in adjustTimeSlot_EldGrid() original-Change-Id: I6f8f578cc7089e5eb7c7b93e580b72ca35ad689a Fix integer overflow in get_pk_v2() original-Change-Id: I63375bed40d45867f6eeaa72b20b1f33e815938c Fix integer overflow in Syn_filt_zero() original-Change-Id: Ie0c02fdfbe03988f9d3b20d10cd9fe4c002d1279 Fix integer overflow in CFac_CalcFacSignal() original-Change-Id: Id2d767c40066c591b51768e978eb8af3b803f0c5 Fix integer overflow in FDKaacEnc_FDKaacEnc_calcPeNoAH() original-Change-Id: Idcbd0f4a51ae2550ed106aa6f3d678d1f9724841 Fix integer overflow in sbrDecoder_calculateGainVec() original-Change-Id: I7081bcbe29c5cede9821b38d93de07c7add2d507 Fix integer overflow in CLpc_SynthesisLattice() original-Change-Id: I4a95ddc18de150102352d4a1845f06094764c881 Fix integer overflow in Pred_Lt4() original-Change-Id: I4dbd012b2de7d07c3e70a47b92e3bfae8dbc750a Fix integer overflow in FDKsbrEnc_InitSbrFastTransientDetector() original-Change-Id: I788cbec1a4a00f44c2f3a72ad7a4afa219807d04 Fix unsigned integer overflow in FDKaacEnc_WriteBitstream() original-Change-Id: I68fc75166e7d2cd5cd45b18dbe3d8c2a92f1822a Fix unsigned integer overflow in FDK_MetadataEnc_Init() original-Change-Id: Ie8d025f9bcdb2442c704bd196e61065c03c10af4 Fix overflow in pseudo random number generators original-Change-Id: I3e2551ee01356297ca14e3788436ede80bd5513c Fix unsigned integer overflow in sbrDecoder_Parse() original-Change-Id: I3f231b2f437e9c37db4d5b964164686710eee971 Fix unsigned integer overflow in longsub() original-Change-Id: I73c2bc50415cac26f1f5a29e125bbe75f9180a6e Fix unsigned integer overflow in CAacDecoder_DecodeFrame() original-Change-Id: Ifce2db4b1454b46fa5f887e9d383f1cc43b291e4 Fix overflow at CLpdChannelStream_Read() original-Change-Id: Idb9d822ce3a4272e4794b643644f5434e2d4bf3f Fix unsigned integer overflow in Hcr_State_BODY_SIGN_ESC__ESC_WORD() original-Change-Id: I1ccf77c0015684b85534c5eb97162740a870b71c Fix unsigned integer overflow in UsacConfig_Parse() original-Change-Id: Ie6d27f84b6ae7eef092ecbff4447941c77864d9f Fix unsigned integer overflow in aacDecoder_drcParse() original-Change-Id: I713f28e883eea3d70b6fa56a7b8f8c22bcf66ca0 Fix unsigned integer overflow in aacDecoder_drcReadCompression() original-Change-Id: Ia34dfeb88c4705c558bce34314f584965cafcf7a Fix unsigned integer overflow in CDataStreamElement_Read() original-Change-Id: Iae896cc1d11f0a893d21be6aa90bd3e60a2c25f0 Fix unsigned integer overflow in transportDec_AdjustEndOfAccessUnit() original-Change-Id: I64cf29a153ee784bb4a16fdc088baabebc0007dc Fix unsigned integer overflow in transportDec_GetAuBitsRemaining() original-Change-Id: I975b3420faa9c16a041874ba0db82e92035962e4 Fix unsigned integer overflow in extractExtendedData() original-Change-Id: I2a59eb09e2053cfb58dfb75fcecfad6b85a80a8f Fix signed integer overflow in CAacDecoder_ExtPayloadParse() original-Change-Id: I4ad5ca4e3b83b5d964f1c2f8c5e7b17c477c7929 Fix unsigned integer overflow in CAacDecoder_DecodeFrame() original-Change-Id: I29a39df77d45c52a0c9c5c83c1ba81f8d0f25090 Follow-up on: Fix integer overflow in CLpc_SynthesisLattice() original-Change-Id: I8fb194ffc073a3432a380845be71036a272d388f Fix signed integer overflow in _interpolateDrcGain() original-Change-Id: I879ec9ab14005069a7c47faf80e8bc6e03d22e60 Fix unsigned integer overflow in FDKreadBits() original-Change-Id: I1f47a6a8037ff70375aa8844947d5681bb4287ad Fix unsigned integer overflow in FDKbyteAlign() original-Change-Id: Id5f3a11a0c9e50fc6f76ed6c572dbd4e9f2af766 Fix unsigned integer overflow in FDK_get32() original-Change-Id: I9d33b8e97e3d38cbb80629cb859266ca0acdce96 Fix unsigned integer overflow in FDK_pushBack() original-Change-Id: Ic87f899bc8c6acf7a377a8ca7f3ba74c3a1e1c19 Fix unsigned integer overflow in FDK_pushForward() original-Change-Id: I3b754382f6776a34be1602e66694ede8e0b8effc Fix unsigned integer overflow in ReadPsData() original-Change-Id: I25361664ba8139e32bbbef2ca8c106a606ce9c37 Fix signed integer overflow in E_UTIL_residu() original-Change-Id: I8c3abd1f437ee869caa8fb5903ce7d3d641b6aad REVERT: Follow-up on: Integer overflow in CLpc_SynthesisLattice(). original-Change-Id: I3d340099acb0414795c8dfbe6362bc0a8f045f9b Follow-up on: Fix integer overflow in CLpc_SynthesisLattice() original-Change-Id: I4aedb8b3a187064e9f4d985175aa55bb99cc7590 Follow-up on: Fix unsigned integer overflow in aacDecoder_drcParse() original-Change-Id: I2aa2e13916213bf52a67e8b0518e7bf7e57fb37d Fix integer overflow in acelp original-Change-Id: Ie6390c136d84055f8b728aefbe4ebef6e029dc77 Fix unsigned integer overflow in aacDecoder_UpdateBitStreamCounters() original-Change-Id: I391ffd97ddb0b2c184cba76139bfb356a3b4d2e2 Adjust concealment default settings original-Change-Id: I6a95db935a327c47df348030bcceafcb29f54b21 Saturate estimatedStartPos original-Change-Id: I27be2085e0ae83ec9501409f65e003f6bcba1ab6 Negative shift exponent in _interpolateDrcGain() original-Change-Id: I18edb26b26d002aafd5e633d4914960f7a359c29 Negative shift exponent in calculateICC() original-Change-Id: I3dcd2ae98d2eb70ee0d59750863cbb2a6f4f8aba Too large shift exponent in FDK_put() original-Change-Id: Ib7d9aaa434d2d8de4a13b720ca0464b31ca9b671 Too large shift exponent in CalcInvLdData() original-Change-Id: I43e6e78d4cd12daeb1dcd5d82d1798bdc2550262 Member access within null pointer of type SBR_CHANNEL original-Change-Id: Idc5e4ea8997810376d2f36bbdf628923b135b097 Member access within null pointer of type CpePersistentData original-Change-Id: Ib6c91cb0d37882768e5baf63324e429589de0d9d Member access within null pointer FDKaacEnc_psyMain() original-Change-Id: I7729b7f4479970531d9dc823abff63ca52e01997 Member access within null pointer FDKaacEnc_GetPnsParam() original-Change-Id: I9aa3b9f3456ae2e0f7483dbd5b3dde95fc62da39 Member access within null pointer FDKsbrEnc_EnvEncodeFrame() original-Change-Id: I67936f90ea714e90b3e81bc0dd1472cc713eb23a Add HCR sanity check original-Change-Id: I6c1d9732ebcf6af12f50b7641400752f74be39f7 Fix memory issue for HBE edge case with 8:3 SBR original-Change-Id: I11ea58a61e69fbe8bf75034b640baee3011e63e9 Additional SBR parametrization sanity check for ELD original-Change-Id: Ie26026fbfe174c2c7b3691f6218b5ce63e322140 Add MPEG-D DRC channel layout check original-Change-Id: Iea70a74f171b227cce636a9eac4ba662777a2f72 Additional out-of-bounds checks in MPEG-D DRC original-Change-Id: Ife4a8c3452c6fde8a0a09e941154a39a769777d4 Change-Id: Ic63cb2f628720f54fe9b572b0cb528e2599c624e --- libDRCdec/src/drcDec_gainDecoder.cpp | 445 +++++++++++++++++++++++++++++++++++ 1 file changed, 445 insertions(+) create mode 100644 libDRCdec/src/drcDec_gainDecoder.cpp (limited to 'libDRCdec/src/drcDec_gainDecoder.cpp') diff --git a/libDRCdec/src/drcDec_gainDecoder.cpp b/libDRCdec/src/drcDec_gainDecoder.cpp new file mode 100644 index 0000000..ca81fad --- /dev/null +++ b/libDRCdec/src/drcDec_gainDecoder.cpp @@ -0,0 +1,445 @@ +/* ----------------------------------------------------------------------------- +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-D DRC decoder library ************************** + + Author(s): + + Description: + +*******************************************************************************/ + +#include "drcDec_types.h" +#include "drcDec_gainDecoder.h" +#include "drcGainDec_preprocess.h" +#include "drcGainDec_init.h" +#include "drcGainDec_process.h" +#include "drcDec_tools.h" + +/*******************************************/ +/* static functions */ +/*******************************************/ + +static int _fitsLocation(DRC_INSTRUCTIONS_UNI_DRC* pInst, + const GAIN_DEC_LOCATION drcLocation) { + int downmixId = pInst->drcApplyToDownmix ? pInst->downmixId[0] : 0; + switch (drcLocation) { + case GAIN_DEC_DRC1: + return (downmixId == 0); + case GAIN_DEC_DRC1_DRC2: + return ((downmixId == 0) || (downmixId == DOWNMIX_ID_ANY_DOWNMIX)); + case GAIN_DEC_DRC2: + return (downmixId == DOWNMIX_ID_ANY_DOWNMIX); + case GAIN_DEC_DRC3: + return ((downmixId != 0) && (downmixId != DOWNMIX_ID_ANY_DOWNMIX)); + case GAIN_DEC_DRC2_DRC3: + return (downmixId != 0); + } + return 0; +} + +static void _setChannelGains(HANDLE_DRC_GAIN_DECODER hGainDec, + const int numChannelGains, + const FIXP_DBL* channelGainDb) { + int i, channelGain_e; + FIXP_DBL channelGain; + FDK_ASSERT(numChannelGains <= 8); + for (i = 0; i < numChannelGains; i++) { + if (channelGainDb[i] == (FIXP_DBL)MINVAL_DBL) { + hGainDec->channelGain[i] = (FIXP_DBL)0; + } else { + /* add loudness normalisation gain (dB) to channel gain (dB) */ + FIXP_DBL tmp_channelGainDb = (channelGainDb[i] >> 1) + + (hGainDec->loudnessNormalisationGainDb >> 2); + tmp_channelGainDb = + SATURATE_LEFT_SHIFT(tmp_channelGainDb, 1, DFRACT_BITS); + channelGain = dB2lin(tmp_channelGainDb, 8, &channelGain_e); + hGainDec->channelGain[i] = scaleValue(channelGain, channelGain_e - 8); + } + } +} + +/*******************************************/ +/* public functions */ +/*******************************************/ + +DRC_ERROR +drcDec_GainDecoder_Open(HANDLE_DRC_GAIN_DECODER* phGainDec) { + DRC_GAIN_DECODER* hGainDec = NULL; + + hGainDec = (DRC_GAIN_DECODER*)FDKcalloc(1, sizeof(DRC_GAIN_DECODER)); + if (hGainDec == NULL) return DE_MEMORY_ERROR; + + hGainDec->multiBandActiveDrcIndex = -1; + hGainDec->channelGainActiveDrcIndex = -1; + + *phGainDec = hGainDec; + + return DE_OK; +} + +DRC_ERROR +drcDec_GainDecoder_Init(HANDLE_DRC_GAIN_DECODER hGainDec, const int frameSize, + const int sampleRate) { + DRC_ERROR err = DE_OK; + + err = initGainDec(hGainDec, frameSize, sampleRate); + if (err) return err; + + initDrcGainBuffers(hGainDec->frameSize, &hGainDec->drcGainBuffers); + + return err; +} + +DRC_ERROR +drcDec_GainDecoder_SetCodecDependentParameters( + HANDLE_DRC_GAIN_DECODER hGainDec, const DELAY_MODE delayMode, + const int timeDomainSupported, + const SUBBAND_DOMAIN_MODE subbandDomainSupported) { + if ((delayMode != DM_REGULAR_DELAY) && (delayMode != DM_LOW_DELAY)) { + return DE_NOT_OK; + } + hGainDec->delayMode = delayMode; + hGainDec->timeDomainSupported = timeDomainSupported; + hGainDec->subbandDomainSupported = subbandDomainSupported; + + return DE_OK; +} + +DRC_ERROR +drcDec_GainDecoder_Config(HANDLE_DRC_GAIN_DECODER hGainDec, + HANDLE_UNI_DRC_CONFIG hUniDrcConfig, + const UCHAR numSelectedDrcSets, + const SCHAR* selectedDrcSetIds, + const UCHAR* selectedDownmixIds) { + DRC_ERROR err = DE_OK; + int a; + + hGainDec->nActiveDrcs = 0; + hGainDec->multiBandActiveDrcIndex = -1; + hGainDec->channelGainActiveDrcIndex = -1; + for (a = 0; a < numSelectedDrcSets; a++) { + err = initActiveDrc(hGainDec, hUniDrcConfig, selectedDrcSetIds[a], + selectedDownmixIds[a]); + if (err) return err; + } + + err = initActiveDrcOffset(hGainDec); + if (err) return err; + + return err; +} + +DRC_ERROR +drcDec_GainDecoder_Close(HANDLE_DRC_GAIN_DECODER* phGainDec) { + if (*phGainDec != NULL) { + FDKfree(*phGainDec); + *phGainDec = NULL; + } + + return DE_OK; +} + +DRC_ERROR +drcDec_GainDecoder_Preprocess(HANDLE_DRC_GAIN_DECODER hGainDec, + HANDLE_UNI_DRC_GAIN hUniDrcGain, + const FIXP_DBL loudnessNormalizationGainDb, + const FIXP_SGL boost, const FIXP_SGL compress) { + DRC_ERROR err = DE_OK; + int a, c; + + /* lnbPointer is the index on the most recent node buffer */ + hGainDec->drcGainBuffers.lnbPointer++; + if (hGainDec->drcGainBuffers.lnbPointer >= NUM_LNB_FRAMES) + hGainDec->drcGainBuffers.lnbPointer = 0; + + for (a = 0; a < hGainDec->nActiveDrcs; a++) { + /* prepare gain interpolation of sequences used by copying and modifying + * nodes in node buffers */ + err = prepareDrcGain(hGainDec, hUniDrcGain, compress, boost, + loudnessNormalizationGainDb, a); + if (err) return err; + } + + for (a = 0; a < MAX_ACTIVE_DRCS; a++) { + for (c = 0; c < 8; c++) { + hGainDec->activeDrc[a] + .lnbIndexForChannel[c][hGainDec->drcGainBuffers.lnbPointer] = + -1; /* "no DRC processing" */ + } + hGainDec->activeDrc[a].subbandGainsReady = 0; + } + + for (c = 0; c < 8; c++) { + hGainDec->drcGainBuffers + .channelGain[c][hGainDec->drcGainBuffers.lnbPointer] = + FL2FXCONST_DBL(1.0f / (float)(1 << 8)); + } + + return err; +} + +/* create gain sequence out of gain sequences of last frame for concealment and + * flushing */ +DRC_ERROR +drcDec_GainDecoder_Conceal(HANDLE_DRC_GAIN_DECODER hGainDec, + HANDLE_UNI_DRC_CONFIG hUniDrcConfig, + HANDLE_UNI_DRC_GAIN hUniDrcGain) { + int seq, gainSequenceCount; + DRC_COEFFICIENTS_UNI_DRC* pCoef = + selectDrcCoefficients(hUniDrcConfig, LOCATION_SELECTED); + if (pCoef == NULL) return DE_OK; + + gainSequenceCount = fMin(pCoef->gainSequenceCount, (UCHAR)12); + + for (seq = 0; seq < gainSequenceCount; seq++) { + int lastNodeIndex = 0; + FIXP_SGL lastGainDb = (FIXP_SGL)0; + + lastNodeIndex = hUniDrcGain->nNodes[seq] - 1; + if ((lastNodeIndex >= 0) && (lastNodeIndex < 16)) { + lastGainDb = hUniDrcGain->gainNode[seq][lastNodeIndex].gainDb; + } + + hUniDrcGain->nNodes[seq] = 1; + if (lastGainDb > (FIXP_SGL)0) { + hUniDrcGain->gainNode[seq][0].gainDb = + FX_DBL2FX_SGL(fMult(FL2FXCONST_SGL(0.9f), lastGainDb)); + } else { + hUniDrcGain->gainNode[seq][0].gainDb = + FX_DBL2FX_SGL(fMult(FL2FXCONST_SGL(0.98f), lastGainDb)); + } + hUniDrcGain->gainNode[seq][0].time = hGainDec->frameSize - 1; + } + return DE_OK; +} + +void drcDec_GainDecoder_SetChannelGains(HANDLE_DRC_GAIN_DECODER hGainDec, + const int numChannels, + const int frameSize, + const FIXP_DBL* channelGainDb, + const int audioBufferChannelOffset, + FIXP_DBL* audioBuffer) { + int c, i; + + if (hGainDec->channelGainActiveDrcIndex >= 0) { + /* channel gains will be applied in drcDec_GainDecoder_ProcessTimeDomain or + * drcDec_GainDecoder_ProcessSubbandDomain, respectively. */ + _setChannelGains(hGainDec, numChannels, channelGainDb); + + if (!hGainDec->status) { /* overwrite previous channel gains at startup */ + DRC_GAIN_BUFFERS* pDrcGainBuffers = &hGainDec->drcGainBuffers; + for (c = 0; c < numChannels; c++) { + for (i = 0; i < NUM_LNB_FRAMES; i++) { + pDrcGainBuffers->channelGain[c][i] = hGainDec->channelGain[c]; + } + } + hGainDec->status = 1; + } + } else { + /* smooth and apply channel gains */ + FIXP_DBL prevChannelGain[8]; + for (c = 0; c < numChannels; c++) { + prevChannelGain[c] = hGainDec->channelGain[c]; + } + + _setChannelGains(hGainDec, numChannels, channelGainDb); + + if (!hGainDec->status) { /* overwrite previous channel gains at startup */ + for (c = 0; c < numChannels; c++) + prevChannelGain[c] = hGainDec->channelGain[c]; + hGainDec->status = 1; + } + + for (c = 0; c < numChannels; c++) { + INT n_min = fMin(fMin(CntLeadingZeros(prevChannelGain[c]), + CntLeadingZeros(hGainDec->channelGain[c])) - + 1, + 9); + FIXP_DBL gain = prevChannelGain[c] << n_min; + FIXP_DBL stepsize = ((hGainDec->channelGain[c] << n_min) - gain); + if (stepsize != (FIXP_DBL)0) { + if (frameSize == 1024) + stepsize = stepsize >> 10; + else + stepsize = (LONG)stepsize / frameSize; + } + n_min = 9 - n_min; +#ifdef FUNCTION_drcDec_GainDecoder_SetChannelGains_func1 + drcDec_GainDecoder_SetChannelGains_func1(audioBuffer, gain, stepsize, + n_min, frameSize); +#else + for (i = 0; i < frameSize; i++) { + audioBuffer[i] = fMultDiv2(audioBuffer[i], gain) << n_min; + gain += stepsize; + } +#endif + audioBuffer += audioBufferChannelOffset; + } + } +} + +DRC_ERROR +drcDec_GainDecoder_ProcessTimeDomain( + HANDLE_DRC_GAIN_DECODER hGainDec, const int delaySamples, + const GAIN_DEC_LOCATION drcLocation, const int channelOffset, + const int drcChannelOffset, const int numChannelsProcessed, + const int timeDataChannelOffset, FIXP_DBL* audioIOBuffer) { + DRC_ERROR err = DE_OK; + int a; + + if (!hGainDec->timeDomainSupported) { + return DE_NOT_OK; + } + + for (a = 0; a < hGainDec->nActiveDrcs; a++) { + if (!_fitsLocation(hGainDec->activeDrc[a].pInst, drcLocation)) continue; + + /* Apply DRC */ + err = processDrcTime(hGainDec, a, delaySamples, channelOffset, + drcChannelOffset, numChannelsProcessed, + timeDataChannelOffset, audioIOBuffer); + if (err) return err; + } + + return err; +} + +DRC_ERROR +drcDec_GainDecoder_ProcessSubbandDomain( + HANDLE_DRC_GAIN_DECODER hGainDec, const int delaySamples, + const GAIN_DEC_LOCATION drcLocation, const int channelOffset, + const int drcChannelOffset, const int numChannelsProcessed, + const int processSingleTimeslot, FIXP_DBL* audioIOBufferReal[], + FIXP_DBL* audioIOBufferImag[]) { + DRC_ERROR err = DE_OK; + int a; + + if (hGainDec->subbandDomainSupported == SDM_OFF) { + return DE_NOT_OK; + } + + for (a = 0; a < hGainDec->nActiveDrcs; a++) { + if (!_fitsLocation(hGainDec->activeDrc[a].pInst, drcLocation)) continue; + + /* Apply DRC */ + err = processDrcSubband(hGainDec, a, delaySamples, channelOffset, + drcChannelOffset, numChannelsProcessed, + processSingleTimeslot, audioIOBufferReal, + audioIOBufferImag); + if (err) return err; + } + + return err; +} + +DRC_ERROR +drcDec_GainDecoder_SetLoudnessNormalizationGainDb( + HANDLE_DRC_GAIN_DECODER hGainDec, FIXP_DBL loudnessNormalizationGainDb) { + hGainDec->loudnessNormalisationGainDb = loudnessNormalizationGainDb; + + return DE_OK; +} + +int drcDec_GainDecoder_GetFrameSize(HANDLE_DRC_GAIN_DECODER hGainDec) { + if (hGainDec == NULL) return -1; + + return hGainDec->frameSize; +} + +int drcDec_GainDecoder_GetDeltaTminDefault(HANDLE_DRC_GAIN_DECODER hGainDec) { + if (hGainDec == NULL) return -1; + + return hGainDec->deltaTminDefault; +} -- cgit v1.2.3