| /* ----------------------------------------------------------------------------- |
| 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): Bernhard Neugebauer |
| |
| Description: MPEG-D DRC Decoder |
| |
| *******************************************************************************/ |
| |
| #ifndef FDK_DRCDECLIB_H |
| #define FDK_DRCDECLIB_H |
| |
| #include "FDK_bitstream.h" |
| #include "FDK_audio.h" |
| #include "common_fix.h" |
| |
| /* DRC decoder according to ISO/IEC 23003-4 (MPEG-D DRC) */ |
| /* including ISO/IEC 23003-4/AMD1 (Amendment 1) */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef struct s_drc_decoder* HANDLE_DRC_DECODER; |
| typedef struct s_uni_drc_interface* HANDLE_UNI_DRC_INTERFACE; |
| typedef struct s_selection_process_output* HANDLE_SEL_PROC_OUTPUT; |
| |
| typedef enum { |
| DRC_DEC_SELECTION = 0x1, /* DRC decoder instance for DRC set selection only */ |
| DRC_DEC_GAIN = 0x2, /* DRC decoder instance for applying DRC only */ |
| DRC_DEC_ALL = 0x3 /* DRC decoder with full functionality */ |
| } DRC_DEC_FUNCTIONAL_RANGE; |
| |
| typedef enum { |
| /* get and set userparams */ |
| DRC_DEC_BOOST, |
| DRC_DEC_COMPRESS, |
| /* set only userparams */ |
| DRC_DEC_LOUDNESS_NORMALIZATION_ON, |
| DRC_DEC_TARGET_LOUDNESS, /**< target loudness in dB, with exponent e = 7 */ |
| DRC_DEC_EFFECT_TYPE, |
| DRC_DEC_EFFECT_TYPE_FALLBACK_CODE, |
| DRC_DEC_LOUDNESS_MEASUREMENT_METHOD, |
| /* set only system (not user) parameters */ |
| DRC_DEC_DOWNMIX_ID, |
| DRC_DEC_TARGET_CHANNEL_COUNT_REQUESTED, /**< number of output channels |
| notified to FDK_drcDecLib for |
| choosing an appropriate |
| downmixInstruction */ |
| DRC_DEC_BASE_CHANNEL_COUNT, |
| /* get only system parameters */ |
| DRC_DEC_IS_MULTIBAND_DRC_1, |
| DRC_DEC_IS_MULTIBAND_DRC_2, |
| DRC_DEC_IS_ACTIVE, /**< MPEG-D DRC payload is present and at least one of |
| Dynamic Range Control (DRC) or Loudness Normalization |
| (LN) is activated */ |
| DRC_DEC_TARGET_CHANNEL_COUNT_SELECTED /**< number of output channels if |
| appropriate downmixInstruction exists |
| */ |
| } DRC_DEC_USERPARAM; |
| |
| typedef enum { |
| DRC_DEC_OK = 0, |
| |
| DRC_DEC_NOT_OK = -10000, |
| DRC_DEC_OUT_OF_MEMORY, |
| DRC_DEC_NOT_OPENED, |
| DRC_DEC_NOT_READY, |
| DRC_DEC_PARAM_OUT_OF_RANGE, |
| DRC_DEC_INVALID_PARAM, |
| DRC_DEC_UNSUPPORTED_FUNCTION |
| } DRC_DEC_ERROR; |
| |
| typedef enum { |
| DRC_DEC_TEST_TIME_DOMAIN = -100, |
| DRC_DEC_TEST_QMF_DOMAIN, |
| DRC_DEC_TEST_STFT_DOMAIN, |
| DRC_DEC_CODEC_MODE_UNDEFINED = -1, |
| DRC_DEC_MPEG_4_AAC, |
| DRC_DEC_MPEG_D_USAC, |
| DRC_DEC_MPEG_H_3DA |
| } DRC_DEC_CODEC_MODE; |
| |
| /* Apply only DRC sets dedicated to processing location. |
| DRC1: before downmix |
| DRC2: before or after downmix (AMD1: only after downmix) |
| DRC3: after downmix */ |
| typedef enum { |
| DRC_DEC_DRC1, |
| DRC_DEC_DRC1_DRC2, |
| DRC_DEC_DRC2, |
| DRC_DEC_DRC3, |
| DRC_DEC_DRC2_DRC3 |
| } DRC_DEC_LOCATION; |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_Open(HANDLE_DRC_DECODER* phDrcDec, |
| const DRC_DEC_FUNCTIONAL_RANGE functionalRange); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_SetCodecMode(HANDLE_DRC_DECODER hDrcDec, |
| const DRC_DEC_CODEC_MODE codecMode); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_Init(HANDLE_DRC_DECODER hDrcDec, const int frameSize, |
| const int sampleRate, const int baseChannelCount); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_Close(HANDLE_DRC_DECODER* phDrcDec); |
| |
| /* set single user request */ |
| DRC_DEC_ERROR |
| FDK_drcDec_SetParam(HANDLE_DRC_DECODER hDrcDec, |
| const DRC_DEC_USERPARAM requestType, |
| const FIXP_DBL requestValue); |
| |
| LONG FDK_drcDec_GetParam(HANDLE_DRC_DECODER hDrcDec, |
| const DRC_DEC_USERPARAM requestType); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_SetInterfaceParameters(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_UNI_DRC_INTERFACE uniDrcInterface); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_SetSelectionProcessMpeghParameters_simple( |
| HANDLE_DRC_DECODER hDrcDec, const int groupPresetIdRequested, |
| const int numGroupIdsRequested, const int* groupIdsRequested); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_SetDownmixInstructions(HANDLE_DRC_DECODER hDrcDec, |
| const int numDowmixId, const int* downmixId, |
| const int* targetLayout, |
| const int* targetChannelCount); |
| |
| void FDK_drcDec_SetSelectionProcessOutput( |
| HANDLE_DRC_DECODER hDrcDec, HANDLE_SEL_PROC_OUTPUT hSelProcOutput); |
| |
| HANDLE_SEL_PROC_OUTPUT |
| FDK_drcDec_GetSelectionProcessOutput(HANDLE_DRC_DECODER hDrcDec); |
| |
| LONG /* FIXP_DBL, e = 7 */ |
| FDK_drcDec_GetGroupLoudness(HANDLE_SEL_PROC_OUTPUT hSelProcOutput, |
| const int groupID, int* groupLoudnessAvailable); |
| |
| void FDK_drcDec_SetChannelGains(HANDLE_DRC_DECODER hDrcDec, |
| const int numChannels, const int frameSize, |
| FIXP_DBL* channelGainDb, FIXP_DBL* audioBuffer, |
| const int audioBufferChannelOffset); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadUniDrcConfig(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadLoudnessInfoSet(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadLoudnessBox(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadDownmixInstructions_Box(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadUniDrcInstructions_Box(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadUniDrcCoefficients_Box(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadUniDrcGain(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| /* either call FDK_drcDec_ReadUniDrcConfig, FDK_drcDec_ReadLoudnessInfoSet and |
| FDK_drcDec_ReadUniDrcGain separately, or call FDK_drcDec_ReadUniDrc */ |
| DRC_DEC_ERROR |
| FDK_drcDec_ReadUniDrc(HANDLE_DRC_DECODER hDrcDec, |
| HANDLE_FDK_BITSTREAM hBitstream); |
| |
| /* calling sequence: |
| FDK_drcDec_Read...() |
| FDK_drcDec_SetChannelGains() |
| FDK_drcDec_Preprocess() |
| FDK_drcDec_Process...() */ |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_Preprocess(HANDLE_DRC_DECODER hDrcDec); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ProcessTime(HANDLE_DRC_DECODER hDrcDec, const int delaySamples, |
| const DRC_DEC_LOCATION drcLocation, |
| const int channelOffset, const int drcChannelOffset, |
| const int numChannelsProcessed, FIXP_DBL* realBuffer, |
| const int timeDataChannelOffset); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ProcessFreq(HANDLE_DRC_DECODER hDrcDec, const int delaySamples, |
| const DRC_DEC_LOCATION drcLocation, |
| const int channelOffset, const int drcChannelOffset, |
| const int numChannelsProcessed, |
| const int processSingleTimeslot, FIXP_DBL** realBuffer, |
| FIXP_DBL** imagBuffer); |
| |
| DRC_DEC_ERROR |
| FDK_drcDec_ApplyDownmix(HANDLE_DRC_DECODER hDrcDec, int* reverseInChannelMap, |
| int* reverseOutChannelMap, FIXP_DBL* realBuffer, |
| int* pNChannels); |
| |
| /* Get library info for this module. */ |
| DRC_DEC_ERROR |
| FDK_drcDec_GetLibInfo(LIB_INFO* info); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif |
