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Diffstat (limited to 'fdk-aac/libAACenc/src/metadata_main.cpp')
| -rw-r--r-- | fdk-aac/libAACenc/src/metadata_main.cpp | 1191 |
1 files changed, 1191 insertions, 0 deletions
diff --git a/fdk-aac/libAACenc/src/metadata_main.cpp b/fdk-aac/libAACenc/src/metadata_main.cpp new file mode 100644 index 0000000..ada4502 --- /dev/null +++ b/fdk-aac/libAACenc/src/metadata_main.cpp @@ -0,0 +1,1191 @@ +/* ----------------------------------------------------------------------------- +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 +----------------------------------------------------------------------------- */ + +/**************************** AAC encoder library ****************************** + + Author(s): V. Bacigalupo + + Description: Metadata Encoder library interface functions + +*******************************************************************************/ + +#include "metadata_main.h" +#include "metadata_compressor.h" +#include "FDK_bitstream.h" +#include "FDK_audio.h" +#include "genericStds.h" + +/*----------------- defines ----------------------*/ +#define MAX_DRC_BANDS (1 << 4) +#define MAX_DRC_FRAMELEN (2 * 1024) +#define MAX_DELAY_FRAMES (3) + +/*--------------- structure definitions --------------------*/ + +typedef struct AAC_METADATA { + /* MPEG: Dynamic Range Control */ + struct { + UCHAR prog_ref_level_present; + SCHAR prog_ref_level; + + UCHAR dyn_rng_sgn[MAX_DRC_BANDS]; + UCHAR dyn_rng_ctl[MAX_DRC_BANDS]; + + UCHAR drc_bands_present; + UCHAR drc_band_incr; + UCHAR drc_band_top[MAX_DRC_BANDS]; + UCHAR drc_interpolation_scheme; + AACENC_METADATA_DRC_PROFILE drc_profile; + INT drc_TargetRefLevel; /* used for Limiter */ + + /* excluded channels */ + UCHAR excluded_chns_present; + UCHAR exclude_mask[2]; /* MAX_NUMBER_CHANNELS/8 */ + } mpegDrc; + + /* ETSI: addtl ancillary data */ + struct { + /* Heavy Compression */ + UCHAR compression_on; /* flag, if compression value should be written */ + UCHAR compression_value; /* compression value */ + AACENC_METADATA_DRC_PROFILE comp_profile; + INT comp_TargetRefLevel; /* used for Limiter */ + INT timecode_coarse_status; + INT timecode_fine_status; + + UCHAR extAncDataStatus; + + struct { + UCHAR ext_downmix_lvl_status; + UCHAR ext_downmix_gain_status; + UCHAR ext_lfe_downmix_status; + UCHAR + ext_dmix_a_idx; /* extended downmix level (0..7, according to table) + */ + UCHAR + ext_dmix_b_idx; /* extended downmix level (0..7, according to table) + */ + UCHAR dmx_gain_5_sgn; + UCHAR dmx_gain_5_idx; + UCHAR dmx_gain_2_sgn; + UCHAR dmx_gain_2_idx; + UCHAR ext_dmix_lfe_idx; /* extended downmix level for lfe (0..15, + according to table) */ + + } extAncData; + + } etsiAncData; + + SCHAR centerMixLevel; /* center downmix level (0...7, according to table) */ + SCHAR + surroundMixLevel; /* surround downmix level (0...7, according to table) */ + UCHAR WritePCEMixDwnIdx; /* flag */ + UCHAR DmxLvl_On; /* flag */ + + UCHAR dolbySurroundMode; + UCHAR drcPresentationMode; + + UCHAR + metadataMode; /* indicate meta data mode in current frame (delay line) */ + +} AAC_METADATA; + +typedef struct FDK_METADATA_ENCODER { + INT metadataMode; + HDRC_COMP hDrcComp; + AACENC_MetaData submittedMetaData; + + INT nAudioDataDelay; /* Additional delay to round up to next frame border (in + samples) */ + INT nMetaDataDelay; /* Meta data delay (in frames) */ + INT nChannels; + CHANNEL_MODE channelMode; + + INT_PCM* pAudioDelayBuffer; + + AAC_METADATA metaDataBuffer[MAX_DELAY_FRAMES]; + INT metaDataDelayIdx; + + UCHAR drcInfoPayload[12]; + UCHAR drcDsePayload[8]; + + INT matrix_mixdown_idx; + + AACENC_EXT_PAYLOAD exPayload[2]; + INT nExtensions; + + UINT maxChannels; /* Maximum number of audio channels to be supported. */ + + INT finalizeMetaData; /* Delay switch off by one frame and write default + configuration to finalize the metadata setup. */ + INT initializeMetaData; /* Fill up delay line with first meta data info. This + is required to have meta data already in first + frame. */ +} FDK_METADATA_ENCODER; + +/*---------------- constants -----------------------*/ +static const AACENC_MetaData defaultMetaDataSetup = { + AACENC_METADATA_DRC_NONE, /* drc_profile */ + AACENC_METADATA_DRC_NOT_PRESENT, /* comp_profile */ + -(31 << 16), /* drc_TargetRefLevel */ + -(23 << 16), /* comp_TargetRefLevel */ + 0, /* prog_ref_level_present */ + -(23 << 16), /* prog_ref_level */ + 0, /* PCE_mixdown_idx_present */ + 0, /* ETSI_DmxLvl_present */ + 0, /* centerMixLevel */ + 0, /* surroundMixLevel */ + 0, /* dolbySurroundMode */ + 0, /* drcPresentationMode */ + {0, 0, 0, 0, 0, 0, 0, 0, 0} /* ExtMetaData */ +}; + +static const FIXP_DBL dmxTable[8] = { + ((FIXP_DBL)MAXVAL_DBL), FL2FXCONST_DBL(0.841f), FL2FXCONST_DBL(0.707f), + FL2FXCONST_DBL(0.596f), FL2FXCONST_DBL(0.500f), FL2FXCONST_DBL(0.422f), + FL2FXCONST_DBL(0.355f), FL2FXCONST_DBL(0.000f)}; + +#define FL2DMXLFE(a) FL2FXCONST_DBL((a) / (1 << LFE_LEV_SCALE)) +static const FIXP_DBL dmxLfeTable[16] = { + FL2DMXLFE(3.162f), FL2DMXLFE(2.000f), FL2DMXLFE(1.679f), FL2DMXLFE(1.413f), + FL2DMXLFE(1.189f), FL2DMXLFE(1.000f), FL2DMXLFE(0.841f), FL2DMXLFE(0.707f), + FL2DMXLFE(0.596f), FL2DMXLFE(0.500f), FL2DMXLFE(0.316f), FL2DMXLFE(0.178f), + FL2DMXLFE(0.100f), FL2DMXLFE(0.032f), FL2DMXLFE(0.010f), FL2DMXLFE(0.000f)}; + +static const UCHAR surmix2matrix_mixdown_idx[8] = {0, 0, 0, 1, 1, 2, 2, 3}; + +/*--------------- function declarations --------------------*/ +static FDK_METADATA_ERROR WriteMetadataPayload( + const HANDLE_FDK_METADATA_ENCODER hMetaData, + const AAC_METADATA* const pMetadata); + +static INT WriteDynamicRangeInfoPayload(const AAC_METADATA* const pMetadata, + UCHAR* const pExtensionPayload); + +static INT WriteEtsiAncillaryDataPayload(const AAC_METADATA* const pMetadata, + UCHAR* const pExtensionPayload); + +static FDK_METADATA_ERROR CompensateAudioDelay( + HANDLE_FDK_METADATA_ENCODER hMetaDataEnc, INT_PCM* const pAudioSamples, + const UINT audioSamplesBufSize, const INT nAudioSamples); + +static FDK_METADATA_ERROR LoadSubmittedMetadata( + const AACENC_MetaData* const hMetadata, const INT nChannels, + const INT metadataMode, AAC_METADATA* const pAacMetaData); + +static FDK_METADATA_ERROR ProcessCompressor(AAC_METADATA* pMetadata, + HDRC_COMP hDrcComp, + const INT_PCM* const pSamples, + const UINT samplesBufSize, + const INT nSamples); + +/*------------- function definitions ----------------*/ + +static DRC_PROFILE convertProfile(AACENC_METADATA_DRC_PROFILE aacProfile) { + DRC_PROFILE drcProfile = DRC_NONE; + + switch (aacProfile) { + case AACENC_METADATA_DRC_NONE: + drcProfile = DRC_NONE; + break; + case AACENC_METADATA_DRC_FILMSTANDARD: + drcProfile = DRC_FILMSTANDARD; + break; + case AACENC_METADATA_DRC_FILMLIGHT: + drcProfile = DRC_FILMLIGHT; + break; + case AACENC_METADATA_DRC_MUSICSTANDARD: + drcProfile = DRC_MUSICSTANDARD; + break; + case AACENC_METADATA_DRC_MUSICLIGHT: + drcProfile = DRC_MUSICLIGHT; + break; + case AACENC_METADATA_DRC_SPEECH: + drcProfile = DRC_SPEECH; + break; + case AACENC_METADATA_DRC_NOT_PRESENT: + drcProfile = DRC_NOT_PRESENT; + break; + default: + drcProfile = DRC_NONE; + break; + } + return drcProfile; +} + +/* convert dialog normalization to program reference level */ +/* NOTE: this only is correct, if the decoder target level is set to -31dB for + * line mode / -20dB for RF mode */ +static UCHAR dialnorm2progreflvl(const INT d) { + return ((UCHAR)fMax(0, fMin((-d + (1 << 13)) >> 14, 127))); +} + +/* convert program reference level to dialog normalization */ +static INT progreflvl2dialnorm(const UCHAR p) { + return -((INT)(p << (16 - 2))); +} + +/* encode downmix levels to Downmixing_levels_MPEG4 */ +static SCHAR encodeDmxLvls(const SCHAR cmixlev, const SCHAR surmixlev) { + SCHAR dmxLvls = 0; + dmxLvls |= 0x80 | (cmixlev << 4); /* center_mix_level_on */ + dmxLvls |= 0x08 | surmixlev; /* surround_mix_level_on */ + + return dmxLvls; +} + +/* encode AAC DRC gain (ISO/IEC 14496-3:2005 4.5.2.7) */ +static void encodeDynrng(INT gain, UCHAR* const dyn_rng_ctl, + UCHAR* const dyn_rng_sgn) { + if (gain < 0) { + *dyn_rng_sgn = 1; + gain = -gain; + } else { + *dyn_rng_sgn = 0; + } + gain = fMin(gain, (127 << 14)); + + *dyn_rng_ctl = (UCHAR)((gain + (1 << 13)) >> 14); +} + +/* decode AAC DRC gain (ISO/IEC 14496-3:2005 4.5.2.7) */ +static INT decodeDynrng(const UCHAR dyn_rng_ctl, const UCHAR dyn_rng_sgn) { + INT tmp = ((INT)dyn_rng_ctl << (16 - 2)); + if (dyn_rng_sgn) tmp = -tmp; + + return tmp; +} + +/* encode AAC compression value (ETSI TS 101 154 page 99) */ +static UCHAR encodeCompr(INT gain) { + UCHAR x, y; + INT tmp; + + /* tmp = (int)((48.164f - gain) / 6.0206f * 15 + 0.5f); */ + tmp = ((3156476 - gain) * 15 + 197283) / 394566; + + if (tmp >= 240) { + return 0xFF; + } else if (tmp < 0) { + return 0; + } else { + x = tmp / 15; + y = tmp % 15; + } + + return (x << 4) | y; +} + +/* decode AAC compression value (ETSI TS 101 154 page 99) */ +static INT decodeCompr(const UCHAR compr) { + INT gain; + SCHAR x = compr >> 4; /* 4 MSB of compr */ + UCHAR y = (compr & 0x0F); /* 4 LSB of compr */ + + /* gain = (INT)((48.164f - 6.0206f * x - 0.4014f * y) ); */ + gain = (INT)( + scaleValue((FIXP_DBL)(((LONG)FL2FXCONST_DBL(6.0206f / 128.f) * (8 - x) - + (LONG)FL2FXCONST_DBL(0.4014f / 128.f) * y)), + -(DFRACT_BITS - 1 - 7 - 16))); + + return gain; +} + +FDK_METADATA_ERROR FDK_MetadataEnc_Open(HANDLE_FDK_METADATA_ENCODER* phMetaData, + const UINT maxChannels) { + FDK_METADATA_ERROR err = METADATA_OK; + HANDLE_FDK_METADATA_ENCODER hMetaData = NULL; + + if (phMetaData == NULL) { + err = METADATA_INVALID_HANDLE; + goto bail; + } + + /* allocate memory */ + if (NULL == (hMetaData = (HANDLE_FDK_METADATA_ENCODER)FDKcalloc( + 1, sizeof(FDK_METADATA_ENCODER)))) { + err = METADATA_MEMORY_ERROR; + goto bail; + } + FDKmemclear(hMetaData, sizeof(FDK_METADATA_ENCODER)); + + if (NULL == (hMetaData->pAudioDelayBuffer = (INT_PCM*)FDKcalloc( + maxChannels * MAX_DRC_FRAMELEN, sizeof(INT_PCM)))) { + err = METADATA_MEMORY_ERROR; + goto bail; + } + FDKmemclear(hMetaData->pAudioDelayBuffer, + maxChannels * MAX_DRC_FRAMELEN * sizeof(INT_PCM)); + hMetaData->maxChannels = maxChannels; + + /* Allocate DRC Compressor. */ + if (FDK_DRC_Generator_Open(&hMetaData->hDrcComp) != 0) { + err = METADATA_MEMORY_ERROR; + goto bail; + } + hMetaData->channelMode = MODE_UNKNOWN; + + /* Return metadata instance */ + *phMetaData = hMetaData; + + return err; + +bail: + FDK_MetadataEnc_Close(&hMetaData); + return err; +} + +FDK_METADATA_ERROR FDK_MetadataEnc_Close( + HANDLE_FDK_METADATA_ENCODER* phMetaData) { + FDK_METADATA_ERROR err = METADATA_OK; + + if (phMetaData == NULL) { + err = METADATA_INVALID_HANDLE; + goto bail; + } + + if (*phMetaData != NULL) { + FDK_DRC_Generator_Close(&(*phMetaData)->hDrcComp); + FDKfree((*phMetaData)->pAudioDelayBuffer); + FDKfree(*phMetaData); + *phMetaData = NULL; + } +bail: + return err; +} + +FDK_METADATA_ERROR FDK_MetadataEnc_Init( + HANDLE_FDK_METADATA_ENCODER hMetaData, const INT resetStates, + const INT metadataMode, const INT audioDelay, const UINT frameLength, + const UINT sampleRate, const UINT nChannels, const CHANNEL_MODE channelMode, + const CHANNEL_ORDER channelOrder) { + FDK_METADATA_ERROR err = METADATA_OK; + int i, nFrames, delay; + + if (hMetaData == NULL) { + err = METADATA_INVALID_HANDLE; + goto bail; + } + + /* Determine values for delay compensation. */ + for (nFrames = 0, delay = audioDelay - (INT)frameLength; delay > 0; + delay -= (INT)frameLength, nFrames++) + ; + + if ((nChannels > (8)) || (nChannels > hMetaData->maxChannels) || + ((-delay) > MAX_DRC_FRAMELEN) || nFrames >= MAX_DELAY_FRAMES) { + err = METADATA_INIT_ERROR; + goto bail; + } + + /* Initialize with default setup. */ + FDKmemcpy(&hMetaData->submittedMetaData, &defaultMetaDataSetup, + sizeof(AACENC_MetaData)); + + hMetaData->finalizeMetaData = + 0; /* finalize meta data only while on/off switching, else disabled */ + hMetaData->initializeMetaData = + 0; /* fill up meta data delay line only at a reset otherwise disabled */ + + /* Reset delay lines. */ + if (resetStates || (hMetaData->nAudioDataDelay != -delay) || + (hMetaData->channelMode != channelMode)) { + if (resetStates || (hMetaData->channelMode == MODE_UNKNOWN)) { + /* clear delay buffer */ + FDKmemclear(hMetaData->pAudioDelayBuffer, + hMetaData->maxChannels * MAX_DRC_FRAMELEN * sizeof(INT_PCM)); + } else { + /* if possible, keep static audio channels for seamless channel + * reconfiguration */ + FDK_channelMapDescr mapDescrPrev, mapDescr; + int c, src[2] = {-1, -1}, dst[2] = {-1, -1}; + + if (channelOrder == CH_ORDER_WG4) { + FDK_chMapDescr_init(&mapDescrPrev, FDK_mapInfoTabWg4, + FDK_mapInfoTabLenWg4, 0); + FDK_chMapDescr_init(&mapDescr, FDK_mapInfoTabWg4, + FDK_mapInfoTabLenWg4, 0); + } else { + FDK_chMapDescr_init(&mapDescrPrev, NULL, 0, + (channelOrder == CH_ORDER_MPEG) ? 1 : 0); + FDK_chMapDescr_init(&mapDescr, NULL, 0, + (channelOrder == CH_ORDER_MPEG) ? 1 : 0); + } + + switch (channelMode) { + case MODE_1: + if ((INT)nChannels != 2) { + /* preserve center channel */ + src[0] = FDK_chMapDescr_getMapValue(&mapDescrPrev, 0, + hMetaData->channelMode); + dst[0] = FDK_chMapDescr_getMapValue(&mapDescr, 0, channelMode); + } + break; + case MODE_2: + case MODE_1_2: + case MODE_1_2_1: + case MODE_1_2_2: + case MODE_1_2_2_1: + if (hMetaData->nChannels >= 2) { + /* preserve left/right channel */ + src[0] = FDK_chMapDescr_getMapValue( + &mapDescrPrev, ((hMetaData->channelMode == 2) ? 0 : 1), + hMetaData->channelMode); + src[1] = FDK_chMapDescr_getMapValue( + &mapDescrPrev, ((hMetaData->channelMode == 2) ? 1 : 2), + hMetaData->channelMode); + dst[0] = FDK_chMapDescr_getMapValue( + &mapDescr, ((channelMode == 2) ? 0 : 1), channelMode); + dst[1] = FDK_chMapDescr_getMapValue( + &mapDescr, ((channelMode == 2) ? 1 : 2), channelMode); + } + break; + default:; + } + C_ALLOC_SCRATCH_START(scratch_audioDelayBuffer, INT_PCM, (8)); + FDKmemclear(scratch_audioDelayBuffer, (8) * sizeof(INT_PCM)); + + i = (hMetaData->nChannels > (INT)nChannels) + ? 0 + : hMetaData->nAudioDataDelay - 1; + do { + for (c = 0; c < 2; c++) { + if (src[c] != -1 && dst[c] != -1) { + scratch_audioDelayBuffer[dst[c]] = + hMetaData->pAudioDelayBuffer[i * hMetaData->nChannels + src[c]]; + } + } + FDKmemcpy(&hMetaData->pAudioDelayBuffer[i * nChannels], + scratch_audioDelayBuffer, nChannels * sizeof(INT_PCM)); + i += (hMetaData->nChannels > (INT)nChannels) ? 1 : -1; + } while ((i < hMetaData->nAudioDataDelay) && (i >= 0)); + + C_ALLOC_SCRATCH_END(scratch_audioDelayBuffer, INT_PCM, (8)); + } + FDKmemclear(hMetaData->metaDataBuffer, sizeof(hMetaData->metaDataBuffer)); + hMetaData->metaDataDelayIdx = 0; + hMetaData->initializeMetaData = + 1; /* fill up delay line with first meta data info */ + } else { + /* Enable meta data. */ + if ((hMetaData->metadataMode == 0) && (metadataMode != 0)) { + /* disable meta data in all delay lines */ + for (i = 0; + i < (int)(sizeof(hMetaData->metaDataBuffer) / sizeof(AAC_METADATA)); + i++) { + LoadSubmittedMetadata(&hMetaData->submittedMetaData, nChannels, 0, + &hMetaData->metaDataBuffer[i]); + } + } + + /* Disable meta data.*/ + if ((hMetaData->metadataMode != 0) && (metadataMode == 0)) { + hMetaData->finalizeMetaData = hMetaData->metadataMode; + } + } + + /* Initialize delay. */ + hMetaData->nAudioDataDelay = -delay; + hMetaData->nMetaDataDelay = nFrames; + hMetaData->nChannels = nChannels; + hMetaData->channelMode = channelMode; + hMetaData->metadataMode = metadataMode; + + /* Initialize compressor. */ + if ((metadataMode == 1) || (metadataMode == 2)) { + if (FDK_DRC_Generator_Initialize(hMetaData->hDrcComp, DRC_NONE, DRC_NONE, + frameLength, sampleRate, channelMode, + channelOrder, 1) != 0) { + err = METADATA_INIT_ERROR; + } + } +bail: + return err; +} + +static FDK_METADATA_ERROR ProcessCompressor(AAC_METADATA* pMetadata, + HDRC_COMP hDrcComp, + const INT_PCM* const pSamples, + const UINT samplesBufSize, + const INT nSamples) { + FDK_METADATA_ERROR err = METADATA_OK; + + INT dynrng, compr; + INT dmxGain5, dmxGain2; + DRC_PROFILE profileDrc; + DRC_PROFILE profileComp; + + if ((pMetadata == NULL) || (hDrcComp == NULL)) { + err = METADATA_INVALID_HANDLE; + return err; + } + + profileDrc = convertProfile(pMetadata->mpegDrc.drc_profile); + profileComp = convertProfile(pMetadata->etsiAncData.comp_profile); + + /* first, check if profile is same as last frame + * otherwise, update setup */ + if ((profileDrc != FDK_DRC_Generator_getDrcProfile(hDrcComp)) || + (profileComp != FDK_DRC_Generator_getCompProfile(hDrcComp))) { + FDK_DRC_Generator_setDrcProfile(hDrcComp, profileDrc, profileComp); + } + + /* Sanity check */ + if (profileComp == DRC_NONE) { + pMetadata->etsiAncData.compression_value = 0x80; /* to ensure no external + values will be written + if not configured */ + } + + /* in case of embedding external values, copy this now (limiter may overwrite + * them) */ + dynrng = decodeDynrng(pMetadata->mpegDrc.dyn_rng_ctl[0], + pMetadata->mpegDrc.dyn_rng_sgn[0]); + compr = decodeCompr(pMetadata->etsiAncData.compression_value); + + dmxGain5 = decodeDynrng(pMetadata->etsiAncData.extAncData.dmx_gain_5_idx, + pMetadata->etsiAncData.extAncData.dmx_gain_5_sgn); + dmxGain2 = decodeDynrng(pMetadata->etsiAncData.extAncData.dmx_gain_2_idx, + pMetadata->etsiAncData.extAncData.dmx_gain_2_sgn); + + /* Call compressor */ + if (FDK_DRC_Generator_Calc( + hDrcComp, pSamples, samplesBufSize, + progreflvl2dialnorm(pMetadata->mpegDrc.prog_ref_level), + pMetadata->mpegDrc.drc_TargetRefLevel, + pMetadata->etsiAncData.comp_TargetRefLevel, + dmxTable[pMetadata->centerMixLevel], + dmxTable[pMetadata->surroundMixLevel], + dmxTable[pMetadata->etsiAncData.extAncData.ext_dmix_a_idx], + dmxTable[pMetadata->etsiAncData.extAncData.ext_dmix_b_idx], + pMetadata->etsiAncData.extAncData.ext_lfe_downmix_status + ? dmxLfeTable[pMetadata->etsiAncData.extAncData.ext_dmix_lfe_idx] + : (FIXP_DBL)0, + dmxGain5, dmxGain2, &dynrng, &compr) != 0) { + err = METADATA_ENCODE_ERROR; + goto bail; + } + + /* Write DRC values */ + pMetadata->mpegDrc.drc_band_incr = 0; + encodeDynrng(dynrng, pMetadata->mpegDrc.dyn_rng_ctl, + pMetadata->mpegDrc.dyn_rng_sgn); + pMetadata->etsiAncData.compression_value = encodeCompr(compr); + +bail: + return err; +} + +FDK_METADATA_ERROR FDK_MetadataEnc_Process( + HANDLE_FDK_METADATA_ENCODER hMetaDataEnc, INT_PCM* const pAudioSamples, + const UINT audioSamplesBufSize, const INT nAudioSamples, + const AACENC_MetaData* const pMetadata, + AACENC_EXT_PAYLOAD** ppMetaDataExtPayload, UINT* nMetaDataExtensions, + INT* matrix_mixdown_idx) { + FDK_METADATA_ERROR err = METADATA_OK; + int metaDataDelayWriteIdx, metaDataDelayReadIdx, metadataMode; + + /* Where to write new meta data info */ + metaDataDelayWriteIdx = hMetaDataEnc->metaDataDelayIdx; + + /* How to write the data */ + metadataMode = hMetaDataEnc->metadataMode; + + /* Compensate meta data delay. */ + hMetaDataEnc->metaDataDelayIdx++; + if (hMetaDataEnc->metaDataDelayIdx > hMetaDataEnc->nMetaDataDelay) + hMetaDataEnc->metaDataDelayIdx = 0; + + /* Where to read pending meta data info from. */ + metaDataDelayReadIdx = hMetaDataEnc->metaDataDelayIdx; + + /* Submit new data if available. */ + if (pMetadata != NULL) { + FDKmemcpy(&hMetaDataEnc->submittedMetaData, pMetadata, + sizeof(AACENC_MetaData)); + } + + /* Write one additional frame with default configuration of meta data. Ensure + * defined behaviour on decoder side. */ + if ((hMetaDataEnc->finalizeMetaData != 0) && + (hMetaDataEnc->metadataMode == 0)) { + FDKmemcpy(&hMetaDataEnc->submittedMetaData, &defaultMetaDataSetup, + sizeof(AACENC_MetaData)); + metadataMode = hMetaDataEnc->finalizeMetaData; + hMetaDataEnc->finalizeMetaData = 0; + } + + /* Get last submitted data. */ + if ((err = LoadSubmittedMetadata( + &hMetaDataEnc->submittedMetaData, hMetaDataEnc->nChannels, + metadataMode, + &hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx])) != + METADATA_OK) { + goto bail; + } + + /* Calculate compressor if necessary and updata meta data info */ + if ((hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx].metadataMode == 1) || + (hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx].metadataMode == 2)) { + if ((err = ProcessCompressor( + &hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx], + hMetaDataEnc->hDrcComp, pAudioSamples, audioSamplesBufSize, + nAudioSamples)) != METADATA_OK) { + /* Get last submitted data again. */ + LoadSubmittedMetadata( + &hMetaDataEnc->submittedMetaData, hMetaDataEnc->nChannels, + metadataMode, &hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx]); + } + } + + /* Fill up delay line with initial meta data info.*/ + if ((hMetaDataEnc->initializeMetaData != 0) && + (hMetaDataEnc->metadataMode != 0)) { + int i; + for (i = 0; + i < (int)(sizeof(hMetaDataEnc->metaDataBuffer) / sizeof(AAC_METADATA)); + i++) { + if (i != metaDataDelayWriteIdx) { + FDKmemcpy(&hMetaDataEnc->metaDataBuffer[i], + &hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx], + sizeof(hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx])); + } + } + hMetaDataEnc->initializeMetaData = 0; + } + + /* Convert Meta Data side info to bitstream data. */ + FDK_ASSERT(metaDataDelayReadIdx < MAX_DELAY_FRAMES); + if ((err = WriteMetadataPayload( + hMetaDataEnc, + &hMetaDataEnc->metaDataBuffer[metaDataDelayReadIdx])) != + METADATA_OK) { + goto bail; + } + + /* Assign meta data to output */ + *ppMetaDataExtPayload = hMetaDataEnc->exPayload; + *nMetaDataExtensions = hMetaDataEnc->nExtensions; + *matrix_mixdown_idx = hMetaDataEnc->matrix_mixdown_idx; + +bail: + /* Compensate audio delay, reset err status. */ + err = CompensateAudioDelay(hMetaDataEnc, pAudioSamples, audioSamplesBufSize, + nAudioSamples / hMetaDataEnc->nChannels); + + return err; +} + +static FDK_METADATA_ERROR CompensateAudioDelay( + HANDLE_FDK_METADATA_ENCODER hMetaDataEnc, INT_PCM* const pAudioSamples, + const UINT audioSamplesBufSize, const INT nAudioSamples) { + FDK_METADATA_ERROR err = METADATA_OK; + + if (hMetaDataEnc->nAudioDataDelay) { + C_ALLOC_SCRATCH_START(scratch_audioDelayBuffer, INT_PCM, 1024); + + for (int c = 0; c < hMetaDataEnc->nChannels; c++) { + int M = 1024; + INT_PCM* pAudioSamples2 = pAudioSamples + c * audioSamplesBufSize; + int delayIdx = hMetaDataEnc->nAudioDataDelay; + + do { + M = fMin(M, delayIdx); + delayIdx -= M; + + FDKmemcpy(&scratch_audioDelayBuffer[0], + &pAudioSamples2[(nAudioSamples - M)], sizeof(INT_PCM) * M); + FDKmemmove(&pAudioSamples2[M], &pAudioSamples2[0], + sizeof(INT_PCM) * (nAudioSamples - M)); + FDKmemcpy( + &pAudioSamples2[0], + &hMetaDataEnc->pAudioDelayBuffer[delayIdx + + c * hMetaDataEnc->nAudioDataDelay], + sizeof(INT_PCM) * M); + FDKmemcpy( + &hMetaDataEnc->pAudioDelayBuffer[delayIdx + + c * hMetaDataEnc->nAudioDataDelay], + &scratch_audioDelayBuffer[0], sizeof(INT_PCM) * M); + + } while (delayIdx > 0); + } + + C_ALLOC_SCRATCH_END(scratch_audioDelayBuffer, INT_PCM, 1024); + } + + return err; +} + +/*----------------------------------------------------------------------------- + + functionname: WriteMetadataPayload + description: fills anc data and extension payload + returns: Error status + + ------------------------------------------------------------------------------*/ +static FDK_METADATA_ERROR WriteMetadataPayload( + const HANDLE_FDK_METADATA_ENCODER hMetaData, + const AAC_METADATA* const pMetadata) { + FDK_METADATA_ERROR err = METADATA_OK; + + if ((hMetaData == NULL) || (pMetadata == NULL)) { + err = METADATA_INVALID_HANDLE; + goto bail; + } + + hMetaData->nExtensions = 0; + hMetaData->matrix_mixdown_idx = -1; + + if (pMetadata->metadataMode != 0) { + /* AAC-DRC */ + if ((pMetadata->metadataMode == 1) || (pMetadata->metadataMode == 2)) { + hMetaData->exPayload[hMetaData->nExtensions].pData = + hMetaData->drcInfoPayload; + hMetaData->exPayload[hMetaData->nExtensions].dataType = EXT_DYNAMIC_RANGE; + hMetaData->exPayload[hMetaData->nExtensions].associatedChElement = -1; + + hMetaData->exPayload[hMetaData->nExtensions].dataSize = + WriteDynamicRangeInfoPayload( + pMetadata, hMetaData->exPayload[hMetaData->nExtensions].pData); + + hMetaData->nExtensions++; + } /* pMetadata->metadataMode==1 || pMetadata->metadataMode==2 */ + + /* Matrix Mixdown Coefficient in PCE */ + if (pMetadata->WritePCEMixDwnIdx) { + hMetaData->matrix_mixdown_idx = + surmix2matrix_mixdown_idx[pMetadata->surroundMixLevel]; + } + + /* ETSI TS 101 154 (DVB) - MPEG4 ancillary_data() */ + if ((pMetadata->metadataMode == 2) || + (pMetadata->metadataMode == 3)) /* MP4_METADATA_MPEG_ETSI */ + { + hMetaData->exPayload[hMetaData->nExtensions].pData = + hMetaData->drcDsePayload; + hMetaData->exPayload[hMetaData->nExtensions].dataType = EXT_DATA_ELEMENT; + hMetaData->exPayload[hMetaData->nExtensions].associatedChElement = -1; + + hMetaData->exPayload[hMetaData->nExtensions].dataSize = + WriteEtsiAncillaryDataPayload( + pMetadata, hMetaData->exPayload[hMetaData->nExtensions].pData); + + hMetaData->nExtensions++; + } /* metadataMode==2 || metadataMode==3 */ + + } /* metadataMode != 0 */ + +bail: + return err; +} + +static INT WriteDynamicRangeInfoPayload(const AAC_METADATA* const pMetadata, + UCHAR* const pExtensionPayload) { + const INT pce_tag_present = 0; /* yet fixed setting! */ + const INT prog_ref_lev_res_bits = 0; + INT i, drc_num_bands = 1; + + FDK_BITSTREAM bsWriter; + FDKinitBitStream(&bsWriter, pExtensionPayload, 16, 0, BS_WRITER); + + /* dynamic_range_info() */ + FDKwriteBits(&bsWriter, pce_tag_present, 1); /* pce_tag_present */ + if (pce_tag_present) { + FDKwriteBits(&bsWriter, 0x0, 4); /* pce_instance_tag */ + FDKwriteBits(&bsWriter, 0x0, 4); /* drc_tag_reserved_bits */ + } + + /* Exclude channels */ + FDKwriteBits(&bsWriter, (pMetadata->mpegDrc.excluded_chns_present) ? 1 : 0, + 1); /* excluded_chns_present*/ + + /* Multiband DRC */ + FDKwriteBits(&bsWriter, (pMetadata->mpegDrc.drc_bands_present) ? 1 : 0, + 1); /* drc_bands_present */ + if (pMetadata->mpegDrc.drc_bands_present) { + FDKwriteBits(&bsWriter, pMetadata->mpegDrc.drc_band_incr, + 4); /* drc_band_incr */ + FDKwriteBits(&bsWriter, pMetadata->mpegDrc.drc_interpolation_scheme, + 4); /* drc_interpolation_scheme */ + drc_num_bands += pMetadata->mpegDrc.drc_band_incr; + for (i = 0; i < drc_num_bands; i++) { + FDKwriteBits(&bsWriter, pMetadata->mpegDrc.drc_band_top[i], + 8); /* drc_band_top */ + } + } + + /* Program Reference Level */ + FDKwriteBits(&bsWriter, pMetadata->mpegDrc.prog_ref_level_present, + 1); /* prog_ref_level_present */ + if (pMetadata->mpegDrc.prog_ref_level_present) { + FDKwriteBits(&bsWriter, pMetadata->mpegDrc.prog_ref_level, + 7); /* prog_ref_level */ + FDKwriteBits(&bsWriter, prog_ref_lev_res_bits, + 1); /* prog_ref_level_reserved_bits */ + } + + /* DRC Values */ + for (i = 0; i < drc_num_bands; i++) { + FDKwriteBits(&bsWriter, (pMetadata->mpegDrc.dyn_rng_sgn[i]) ? 1 : 0, + 1); /* dyn_rng_sgn[ */ + FDKwriteBits(&bsWriter, pMetadata->mpegDrc.dyn_rng_ctl[i], + 7); /* dyn_rng_ctl */ + } + + /* return number of valid bits in extension payload. */ + return FDKgetValidBits(&bsWriter); +} + +static INT WriteEtsiAncillaryDataPayload(const AAC_METADATA* const pMetadata, + UCHAR* const pExtensionPayload) { + FDK_BITSTREAM bsWriter; + FDKinitBitStream(&bsWriter, pExtensionPayload, 16, 0, BS_WRITER); + + /* ancillary_data_sync */ + FDKwriteBits(&bsWriter, 0xBC, 8); + + /* bs_info */ + FDKwriteBits(&bsWriter, 0x3, 2); /* mpeg_audio_type */ + FDKwriteBits(&bsWriter, pMetadata->dolbySurroundMode, + 2); /* dolby_surround_mode */ + FDKwriteBits(&bsWriter, pMetadata->drcPresentationMode, + 2); /* DRC presentation mode */ + FDKwriteBits(&bsWriter, 0x0, 1); /* stereo_downmix_mode */ + FDKwriteBits(&bsWriter, 0x0, 1); /* reserved */ + + /* ancillary_data_status */ + FDKwriteBits(&bsWriter, 0, 3); /* 3 bit Reserved, set to "0" */ + FDKwriteBits(&bsWriter, (pMetadata->DmxLvl_On) ? 1 : 0, + 1); /* downmixing_levels_MPEG4_status */ + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.extAncDataStatus, + 1); /* ext_anc_data_status */ + FDKwriteBits(&bsWriter, (pMetadata->etsiAncData.compression_on) ? 1 : 0, + 1); /* audio_coding_mode_and_compression status */ + FDKwriteBits(&bsWriter, + (pMetadata->etsiAncData.timecode_coarse_status) ? 1 : 0, + 1); /* coarse_grain_timecode_status */ + FDKwriteBits(&bsWriter, (pMetadata->etsiAncData.timecode_fine_status) ? 1 : 0, + 1); /* fine_grain_timecode_status */ + + /* downmixing_levels_MPEG4_status */ + if (pMetadata->DmxLvl_On) { + FDKwriteBits( + &bsWriter, + encodeDmxLvls(pMetadata->centerMixLevel, pMetadata->surroundMixLevel), + 8); + } + + /* audio_coding_mode_and_compression_status */ + if (pMetadata->etsiAncData.compression_on) { + FDKwriteBits(&bsWriter, 0x01, 8); /* audio coding mode */ + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.compression_value, + 8); /* compression value */ + } + + /* grain-timecode coarse/fine */ + if (pMetadata->etsiAncData.timecode_coarse_status) { + FDKwriteBits(&bsWriter, 0x0, 16); /* not yet supported */ + } + + if (pMetadata->etsiAncData.timecode_fine_status) { + FDKwriteBits(&bsWriter, 0x0, 16); /* not yet supported */ + } + + /* extended ancillary data structure */ + if (pMetadata->etsiAncData.extAncDataStatus) { + /* ext_ancillary_data_status */ + FDKwriteBits(&bsWriter, 0, 1); /* Reserved, set to "0" */ + FDKwriteBits(&bsWriter, + pMetadata->etsiAncData.extAncData.ext_downmix_lvl_status, + 1); /* ext_downmixing_levels_status */ + FDKwriteBits(&bsWriter, + pMetadata->etsiAncData.extAncData.ext_downmix_gain_status, + 1); /* ext_downmixing_global_gains_status */ + FDKwriteBits(&bsWriter, + pMetadata->etsiAncData.extAncData.ext_lfe_downmix_status, + 1); /* ext_downmixing_lfe_level_status" */ + FDKwriteBits(&bsWriter, 0, 4); /* Reserved, set to "0" */ + + /* ext_downmixing_levels */ + if (pMetadata->etsiAncData.extAncData.ext_downmix_lvl_status) { + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.extAncData.ext_dmix_a_idx, + 3); /* dmix_a_idx */ + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.extAncData.ext_dmix_b_idx, + 3); /* dmix_b_idx */ + FDKwriteBits(&bsWriter, 0, 2); /* Reserved, set to "0" */ + } + + /* ext_downmixing_gains */ + if (pMetadata->etsiAncData.extAncData.ext_downmix_gain_status) { + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.extAncData.dmx_gain_5_sgn, + 1); /* dmx_gain_5_sign */ + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.extAncData.dmx_gain_5_idx, + 6); /* dmx_gain_5_idx */ + FDKwriteBits(&bsWriter, 0, 1); /* Reserved, set to "0" */ + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.extAncData.dmx_gain_2_sgn, + 1); /* dmx_gain_2_sign */ + FDKwriteBits(&bsWriter, pMetadata->etsiAncData.extAncData.dmx_gain_2_idx, + 6); /* dmx_gain_2_idx */ + FDKwriteBits(&bsWriter, 0, 1); /* Reserved, set to "0" */ + } + + if (pMetadata->etsiAncData.extAncData.ext_lfe_downmix_status) { + FDKwriteBits(&bsWriter, + pMetadata->etsiAncData.extAncData.ext_dmix_lfe_idx, + 4); /* dmix_lfe_idx */ + FDKwriteBits(&bsWriter, 0, 4); /* Reserved, set to "0" */ + } + } + + return FDKgetValidBits(&bsWriter); +} + +static FDK_METADATA_ERROR LoadSubmittedMetadata( + const AACENC_MetaData* const hMetadata, const INT nChannels, + const INT metadataMode, AAC_METADATA* const pAacMetaData) { + FDK_METADATA_ERROR err = METADATA_OK; + + if (pAacMetaData == NULL) { + err = METADATA_INVALID_HANDLE; + } else { + /* init struct */ + FDKmemclear(pAacMetaData, sizeof(AAC_METADATA)); + + if (hMetadata != NULL) { + /* convert data */ + pAacMetaData->mpegDrc.drc_profile = hMetadata->drc_profile; + pAacMetaData->etsiAncData.comp_profile = hMetadata->comp_profile; + pAacMetaData->mpegDrc.drc_TargetRefLevel = hMetadata->drc_TargetRefLevel; + pAacMetaData->etsiAncData.comp_TargetRefLevel = + hMetadata->comp_TargetRefLevel; + pAacMetaData->mpegDrc.prog_ref_level_present = + hMetadata->prog_ref_level_present; + pAacMetaData->mpegDrc.prog_ref_level = + dialnorm2progreflvl(hMetadata->prog_ref_level); + + pAacMetaData->centerMixLevel = hMetadata->centerMixLevel; + pAacMetaData->surroundMixLevel = hMetadata->surroundMixLevel; + pAacMetaData->WritePCEMixDwnIdx = hMetadata->PCE_mixdown_idx_present; + pAacMetaData->DmxLvl_On = hMetadata->ETSI_DmxLvl_present; + + pAacMetaData->etsiAncData.compression_on = + (hMetadata->comp_profile == AACENC_METADATA_DRC_NOT_PRESENT ? 0 : 1); + + if (pAacMetaData->mpegDrc.drc_profile == + AACENC_METADATA_DRC_NOT_PRESENT) { + pAacMetaData->mpegDrc.drc_profile = + AACENC_METADATA_DRC_NONE; /* MPEG DRC gains are + always present in BS + syntax */ + /* we should give a warning, but ErrorHandler does not support this */ + } + + if (nChannels == 2) { + pAacMetaData->dolbySurroundMode = + hMetadata->dolbySurroundMode; /* dolby_surround_mode */ + } else { + pAacMetaData->dolbySurroundMode = 0; + } + + pAacMetaData->drcPresentationMode = hMetadata->drcPresentationMode; + /* override external values if DVB DRC presentation mode is given */ + if (pAacMetaData->drcPresentationMode == 1) { + pAacMetaData->mpegDrc.drc_TargetRefLevel = + fMax(-(31 << 16), pAacMetaData->mpegDrc.drc_TargetRefLevel); + pAacMetaData->etsiAncData.comp_TargetRefLevel = fMax( + -(20 << 16), + pAacMetaData->etsiAncData.comp_TargetRefLevel); /* implies -23dB */ + } + if (pAacMetaData->drcPresentationMode == 2) { + pAacMetaData->mpegDrc.drc_TargetRefLevel = + fMax(-(23 << 16), pAacMetaData->mpegDrc.drc_TargetRefLevel); + pAacMetaData->etsiAncData.comp_TargetRefLevel = + fMax(-(23 << 16), pAacMetaData->etsiAncData.comp_TargetRefLevel); + } + if (pAacMetaData->etsiAncData.comp_profile == + AACENC_METADATA_DRC_NOT_PRESENT) { + /* DVB defines to revert to Light DRC if heavy is not present */ + if (pAacMetaData->drcPresentationMode != 0) { + /* we exclude the "not indicated" mode as this requires the user to + * define desired levels anyway */ + pAacMetaData->mpegDrc.drc_TargetRefLevel = + fMax(pAacMetaData->etsiAncData.comp_TargetRefLevel, + pAacMetaData->mpegDrc.drc_TargetRefLevel); + } + } + + pAacMetaData->etsiAncData.timecode_coarse_status = + 0; /* not yet supported - attention: Update + GetEstMetadataBytesPerFrame() if enable this! */ + pAacMetaData->etsiAncData.timecode_fine_status = + 0; /* not yet supported - attention: Update + GetEstMetadataBytesPerFrame() if enable this! */ + + /* extended ancillary data */ + pAacMetaData->etsiAncData.extAncDataStatus = + ((hMetadata->ExtMetaData.extAncDataEnable == 1) ? 1 : 0); + + if (pAacMetaData->etsiAncData.extAncDataStatus) { + pAacMetaData->etsiAncData.extAncData.ext_downmix_lvl_status = + (hMetadata->ExtMetaData.extDownmixLevelEnable ? 1 : 0); + pAacMetaData->etsiAncData.extAncData.ext_downmix_gain_status = + (hMetadata->ExtMetaData.dmxGainEnable ? 1 : 0); + pAacMetaData->etsiAncData.extAncData.ext_lfe_downmix_status = + (hMetadata->ExtMetaData.lfeDmxEnable ? 1 : 0); + + pAacMetaData->etsiAncData.extAncData.ext_dmix_a_idx = + hMetadata->ExtMetaData.extDownmixLevel_A; + pAacMetaData->etsiAncData.extAncData.ext_dmix_b_idx = + hMetadata->ExtMetaData.extDownmixLevel_B; + + if (pAacMetaData->etsiAncData.extAncData.ext_downmix_gain_status) { + encodeDynrng(hMetadata->ExtMetaData.dmxGain5, + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_5_idx), + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_5_sgn)); + encodeDynrng(hMetadata->ExtMetaData.dmxGain2, + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_2_idx), + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_2_sgn)); + } else { + encodeDynrng(1 << 16, + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_5_idx), + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_5_sgn)); + encodeDynrng(1 << 16, + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_2_idx), + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_2_sgn)); + } + + if (pAacMetaData->etsiAncData.extAncData.ext_lfe_downmix_status) { + pAacMetaData->etsiAncData.extAncData.ext_dmix_lfe_idx = + hMetadata->ExtMetaData.lfeDmxLevel; + } else { + pAacMetaData->etsiAncData.extAncData.ext_dmix_lfe_idx = + 15; /* -inf dB */ + } + } else { + pAacMetaData->etsiAncData.extAncData.ext_downmix_lvl_status = 0; + pAacMetaData->etsiAncData.extAncData.ext_downmix_gain_status = 0; + pAacMetaData->etsiAncData.extAncData.ext_lfe_downmix_status = 0; + + pAacMetaData->etsiAncData.extAncData.ext_dmix_a_idx = 7; /* -inf dB */ + pAacMetaData->etsiAncData.extAncData.ext_dmix_b_idx = 7; /* -inf dB */ + + encodeDynrng(1 << 16, + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_5_idx), + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_5_sgn)); + encodeDynrng(1 << 16, + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_2_idx), + &(pAacMetaData->etsiAncData.extAncData.dmx_gain_2_sgn)); + + pAacMetaData->etsiAncData.extAncData.ext_dmix_lfe_idx = + 15; /* -inf dB */ + } + + pAacMetaData->metadataMode = metadataMode; + } else { + pAacMetaData->metadataMode = 0; /* there is no configuration available */ + } + } + + return err; +} + +INT FDK_MetadataEnc_GetDelay(HANDLE_FDK_METADATA_ENCODER hMetadataEnc) { + INT delay = 0; + + if (hMetadataEnc != NULL) { + delay = hMetadataEnc->nAudioDataDelay; + } + + return delay; +} |