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Diffstat (limited to 'fdk-aac/libAACdec/src/aacdec_drc.h')
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diff --git a/fdk-aac/libAACdec/src/aacdec_drc.h b/fdk-aac/libAACdec/src/aacdec_drc.h new file mode 100644 index 0000000..924ec6f --- /dev/null +++ b/fdk-aac/libAACdec/src/aacdec_drc.h @@ -0,0 +1,192 @@ +/* ----------------------------------------------------------------------------- +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 decoder library ****************************** + + Author(s): Christian Griebel + + Description: Dynamic range control (DRC) decoder tool for AAC + +*******************************************************************************/ + +#ifndef AACDEC_DRC_H +#define AACDEC_DRC_H + +#include "tp_data.h" /* for program config element support */ + +#include "aacdec_drc_types.h" +#include "channel.h" +#include "FDK_bitstream.h" + +#define AACDEC_DRC_DFLT_EXPIRY_FRAMES \ + (0) /* Default DRC data expiry time in AAC frames */ + +/* #define AACDEC_DRC_IGNORE_FRAMES_WITH_MULTIPLE_CH_THREADS */ /* The name says + it all. */ +/* #define AACDEC_DRC_DEBUG */ + +/** + * \brief DRC module setting parameters + */ +typedef enum { + DRC_CUT_SCALE = 0, + DRC_BOOST_SCALE, + TARGET_REF_LEVEL, + DRC_BS_DELAY, + DRC_DATA_EXPIRY_FRAME, + APPLY_NORMALIZATION, + APPLY_HEAVY_COMPRESSION, + DEFAULT_PRESENTATION_MODE, + ENCODER_TARGET_LEVEL, + MAX_OUTPUT_CHANNELS, + UNIDRC_PRECEDENCE +} AACDEC_DRC_PARAM; + +/** + * \brief DRC module interface functions + */ +void aacDecoder_drcInit(HANDLE_AAC_DRC self); + +void aacDecoder_drcInitChannelData(CDrcChannelData *pDrcChannel); + +AAC_DECODER_ERROR aacDecoder_drcSetParam(HANDLE_AAC_DRC self, + AACDEC_DRC_PARAM param, INT value); + +int aacDecoder_drcMarkPayload(HANDLE_AAC_DRC self, HANDLE_FDK_BITSTREAM hBs, + AACDEC_DRC_PAYLOAD_TYPE type); + +int aacDecoder_drcProlog( + HANDLE_AAC_DRC self, HANDLE_FDK_BITSTREAM hBs, + CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], + UCHAR pceInstanceTag, UCHAR channelMapping[], int validChannels); + +/** + * \brief Apply DRC. If SBR is present, DRC data is handed over to the SBR + * decoder. + * \param self AAC decoder instance + * \param pSbrDec pointer to SBR decoder instance + * \param pAacDecoderChannelInfo AAC decoder channel instance to be processed + * \param pDrcDat DRC channel data + * \param extGain Pointer to a FIXP_DBL where a externally applyable gain will + * be stored into (independently on whether it will be apply internally or not). + * At function call the buffer must hold the scale (0 >= scale < + * DFRACT_BITS) to be applied on the gain value. + * \param ch channel index + * \param aacFrameSize AAC frame size + * \param bSbrPresent flag indicating that SBR is present, in which case DRC is + * handed over to the SBR instance pSbrDec + */ +void aacDecoder_drcApply(HANDLE_AAC_DRC self, void *pSbrDec, + CAacDecoderChannelInfo *pAacDecoderChannelInfo, + CDrcChannelData *pDrcDat, FIXP_DBL *extGain, int ch, + int aacFrameSize, int bSbrPresent); + +int aacDecoder_drcEpilog( + HANDLE_AAC_DRC self, HANDLE_FDK_BITSTREAM hBs, + CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], + UCHAR pceInstanceTag, UCHAR channelMapping[], int validChannels); + +/** + * \brief Get metadata information found in bitstream. + * \param self DRC module instance handle. + * \param pPresMode Pointer to field where the presentation mode will be written + * to. + * \param pProgRefLevel Pointer to field where the program reference level will + * be written to. + * \return Nothing. + */ +void aacDecoder_drcGetInfo(HANDLE_AAC_DRC self, SCHAR *pPresMode, + SCHAR *pProgRefLevel); + +#endif /* AACDEC_DRC_H */ |