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Diffstat (limited to 'libAACenc/src/aacEnc_ram.cpp')
| -rw-r--r-- | libAACenc/src/aacEnc_ram.cpp | 252 |
1 files changed, 133 insertions, 119 deletions
diff --git a/libAACenc/src/aacEnc_ram.cpp b/libAACenc/src/aacEnc_ram.cpp index be3eea2..77b1131 100644 --- a/libAACenc/src/aacEnc_ram.cpp +++ b/libAACenc/src/aacEnc_ram.cpp @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- 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. +© 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. +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: +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 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 +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. +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. +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." +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. +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. +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. +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 @@ -79,14 +90,16 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ + +/**************************** AAC encoder library ****************************** + + Author(s): M. Lohwasser, M. Gayer -/****************************************************************************** + Description: - Initial authors: M. Lohwasser, M. Gayer - Contents/description: +*******************************************************************************/ -******************************************************************************/ /*! \file \brief Memory layout @@ -95,100 +108,101 @@ amm-info@iis.fraunhofer.de #include "aacEnc_ram.h" - C_AALLOC_MEM (AACdynamic_RAM, FIXP_DBL, AAC_ENC_DYN_RAM_SIZE/sizeof(FIXP_DBL)) +C_AALLOC_MEM(AACdynamic_RAM, FIXP_DBL, AAC_ENC_DYN_RAM_SIZE / sizeof(FIXP_DBL)) /* - Static memory areas, must not be overwritten in other sections of the decoder ! + Static memory areas, must not be overwritten in other sections of the decoder + ! */ /* The structure AacEncoder contains all Encoder structures. */ -C_ALLOC_MEM (Ram_aacEnc_AacEncoder, AAC_ENC, 1) - +C_ALLOC_MEM(Ram_aacEnc_AacEncoder, struct AAC_ENC, 1) /* The structure PSY_INTERNAl contains all psych configuration and data pointer. * PsyStatic holds last and current Psych data. - * PsyInputBuffer contains time input. Signal is needed at the beginning of Psych. - Memory can be reused after signal is in time domain. - * PsyData contains spectral, nrg and threshold information. Necessary data are - copied into PsyOut, so memory is available after leaving psych. - * TnsData, ChaosMeasure, PnsData are temporarily necessary, e.g. use memory from - PsyInputBuffer. + * PsyInputBuffer contains time input. Signal is needed at the beginning of + Psych. Memory can be reused after signal is in time domain. + * PsyData contains spectral, nrg and threshold information. Necessary data + are copied into PsyOut, so memory is available after leaving psych. + * TnsData, ChaosMeasure, PnsData are temporarily necessary, e.g. use memory + from PsyInputBuffer. */ -C_ALLOC_MEM2 (Ram_aacEnc_PsyElement, PSY_ELEMENT, 1, (8)) - -C_ALLOC_MEM (Ram_aacEnc_PsyInternal, PSY_INTERNAL, 1) -C_ALLOC_MEM2 (Ram_aacEnc_PsyStatic, PSY_STATIC, 1, (8)) +C_ALLOC_MEM2(Ram_aacEnc_PsyElement, PSY_ELEMENT, 1, ((8))) -C_ALLOC_MEM2 (Ram_aacEnc_PsyInputBuffer, INT_PCM, MAX_INPUT_BUFFER_SIZE, (8)) +C_ALLOC_MEM(Ram_aacEnc_PsyInternal, PSY_INTERNAL, 1) +C_ALLOC_MEM2(Ram_aacEnc_PsyStatic, PSY_STATIC, 1, (8)) - PSY_DYNAMIC *GetRam_aacEnc_PsyDynamic (int n, UCHAR* dynamic_RAM) { - FDK_ASSERT(dynamic_RAM!=0); - return ((PSY_DYNAMIC*) (dynamic_RAM + P_BUF_1 + n*sizeof(PSY_DYNAMIC))); - } +C_ALLOC_MEM2(Ram_aacEnc_PsyInputBuffer, INT_PCM, MAX_INPUT_BUFFER_SIZE, (8)) - C_ALLOC_MEM (Ram_bsOutbuffer, UCHAR, OUTPUTBUFFER_SIZE) +PSY_DYNAMIC *GetRam_aacEnc_PsyDynamic(int n, UCHAR *dynamic_RAM) { + FDK_ASSERT(dynamic_RAM != 0); + /* The reinterpret_cast is used to suppress a compiler warning. We know that + * (dynamic_RAM + P_BUF_1 + n*sizeof(PSY_DYNAMIC)) is sufficiently aligned, so + * the cast is safe */ + return reinterpret_cast<PSY_DYNAMIC *>(reinterpret_cast<void *>( + dynamic_RAM + P_BUF_1 + n * sizeof(PSY_DYNAMIC))); +} /* The structure PSY_OUT holds all psychoaccoustic data needed in quantization module */ -C_ALLOC_MEM2 (Ram_aacEnc_PsyOut, PSY_OUT, 1, (1)) - -C_ALLOC_MEM2 (Ram_aacEnc_PsyOutElements, PSY_OUT_ELEMENT, 1, (1)*(8)) -C_ALLOC_MEM2 (Ram_aacEnc_PsyOutChannel, PSY_OUT_CHANNEL, 1, (1)*(8)) +C_ALLOC_MEM2(Ram_aacEnc_PsyOut, PSY_OUT, 1, (1)) +C_ALLOC_MEM2(Ram_aacEnc_PsyOutElements, PSY_OUT_ELEMENT, 1, (1) * ((8))) +C_ALLOC_MEM2(Ram_aacEnc_PsyOutChannel, PSY_OUT_CHANNEL, 1, (1) * (8)) /* - The structure QC_STATE contains preinitialized settings and quantizer structures. + The structure QC_STATE contains preinitialized settings and quantizer + structures. * AdjustThreshold structure contains element-wise settings. * ElementBits contains elemnt-wise bit consumption settings. * When CRC is active, lookup table is necessary for fast crc calculation. - * Bitcounter contains buffer to find optimal codebooks and minimal bit consumption. - Values are temporarily, so dynamic memory can be used. + * Bitcounter contains buffer to find optimal codebooks and minimal bit + consumption. Values are temporarily, so dynamic memory can be used. */ -C_ALLOC_MEM (Ram_aacEnc_QCstate, QC_STATE, 1) -C_ALLOC_MEM (Ram_aacEnc_AdjustThreshold, ADJ_THR_STATE, 1) - -C_ALLOC_MEM2 (Ram_aacEnc_AdjThrStateElement, ATS_ELEMENT, 1, (8)) -C_ALLOC_MEM2 (Ram_aacEnc_ElementBits, ELEMENT_BITS, 1, (8)) -C_ALLOC_MEM (Ram_aacEnc_BitCntrState, BITCNTR_STATE, 1) - - INT *GetRam_aacEnc_BitLookUp(int n, UCHAR* dynamic_RAM) { - FDK_ASSERT(dynamic_RAM!=0); - return ((INT*) (dynamic_RAM + P_BUF_1)); - } - INT *GetRam_aacEnc_MergeGainLookUp(int n, UCHAR* dynamic_RAM) { - FDK_ASSERT(dynamic_RAM!=0); - return ((INT*) (dynamic_RAM + P_BUF_1 + sizeof(INT)*(MAX_SFB_LONG*(CODE_BOOK_ESC_NDX+1)))); - } - +C_ALLOC_MEM(Ram_aacEnc_QCstate, QC_STATE, 1) +C_ALLOC_MEM(Ram_aacEnc_AdjustThreshold, ADJ_THR_STATE, 1) + +C_ALLOC_MEM2(Ram_aacEnc_AdjThrStateElement, ATS_ELEMENT, 1, ((8))) +C_ALLOC_MEM2(Ram_aacEnc_ElementBits, ELEMENT_BITS, 1, ((8))) +C_ALLOC_MEM(Ram_aacEnc_BitCntrState, struct BITCNTR_STATE, 1) + +INT *GetRam_aacEnc_BitLookUp(int n, UCHAR *dynamic_RAM) { + FDK_ASSERT(dynamic_RAM != 0); + /* The reinterpret_cast is used to suppress a compiler warning. We know that + * (dynamic_RAM + P_BUF_1) is sufficiently aligned, so the cast is safe */ + return reinterpret_cast<INT *>( + reinterpret_cast<void *>(dynamic_RAM + P_BUF_1)); +} +INT *GetRam_aacEnc_MergeGainLookUp(int n, UCHAR *dynamic_RAM) { + FDK_ASSERT(dynamic_RAM != 0); + /* The reinterpret_cast is used to suppress a compiler warning. We know that + * (dynamic_RAM + P_BUF_1 + sizeof(INT)*(MAX_SFB_LONG*(CODE_BOOK_ESC_NDX+1))) + * is sufficiently aligned, so the cast is safe */ + return reinterpret_cast<INT *>(reinterpret_cast<void *>( + dynamic_RAM + P_BUF_1 + + sizeof(INT) * (MAX_SFB_LONG * (CODE_BOOK_ESC_NDX + 1)))); +} /* - The structure QC_OUT contains settings and structures holding all necessary information - needed in bitstreamwriter. + The structure QC_OUT contains settings and structures holding all necessary + information needed in bitstreamwriter. */ -C_ALLOC_MEM2 (Ram_aacEnc_QCout, QC_OUT, 1, (1)) -C_ALLOC_MEM2 (Ram_aacEnc_QCelement, QC_OUT_ELEMENT, (1), (8)) - QC_OUT_CHANNEL *GetRam_aacEnc_QCchannel (int n, UCHAR* dynamic_RAM) { - FDK_ASSERT(dynamic_RAM!=0); - return ((QC_OUT_CHANNEL*) (dynamic_RAM + P_BUF_0 + n*sizeof(QC_OUT_CHANNEL))); - } - - - - - - - - - - - - +C_ALLOC_MEM2(Ram_aacEnc_QCout, QC_OUT, 1, (1)) +C_ALLOC_MEM2(Ram_aacEnc_QCelement, QC_OUT_ELEMENT, 1, (1) * ((8))) +QC_OUT_CHANNEL *GetRam_aacEnc_QCchannel(int n, UCHAR *dynamic_RAM) { + FDK_ASSERT(dynamic_RAM != 0); + /* The reinterpret_cast is used to suppress a compiler warning. We know that + * (dynamic_RAM + P_BUF_0 + n*sizeof(QC_OUT_CHANNEL)) is sufficiently aligned, + * so the cast is safe */ + return reinterpret_cast<QC_OUT_CHANNEL *>(reinterpret_cast<void *>( + dynamic_RAM + P_BUF_0 + n * sizeof(QC_OUT_CHANNEL))); +} |