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authorMatthias P. Braendli <matthias.braendli@mpb.li>2020-03-31 10:03:58 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2020-03-31 10:03:58 +0200
commita1eb6cf861d3c1cbd4e6c016be3cbd2a1e3d797d (patch)
tree2b4790eec8f47fb086e645717f07c53b30ace919 /fdk-aac/libSBRenc/src/sbrenc_ram.cpp
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parentc6a73c219dbfdfe639372d9922f4eb512f06fa2f (diff)
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+/* -----------------------------------------------------------------------------
+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
+----------------------------------------------------------------------------- */
+
+/**************************** SBR encoder library ******************************
+
+ Author(s):
+
+ Description:
+
+*******************************************************************************/
+
+/*!
+ \file
+ \brief Memory layout
+ $Revision: 92864 $
+
+ This module declares all static and dynamic memory spaces
+*/
+#include "sbrenc_ram.h"
+
+#include "sbr.h"
+#include "genericStds.h"
+
+C_AALLOC_MEM(Ram_SbrDynamic_RAM, FIXP_DBL,
+ ((SBR_ENC_DYN_RAM_SIZE) / sizeof(FIXP_DBL)))
+
+/*!
+ \name StaticSbrData
+
+ Static memory areas, must not be overwritten in other sections of the encoder
+*/
+/* @{ */
+
+/*! static sbr encoder instance for one encoder (2 channels)
+ all major static and dynamic memory areas are located
+ in module sbr_ram and sbr rom
+*/
+C_ALLOC_MEM(Ram_SbrEncoder, SBR_ENCODER, 1)
+C_ALLOC_MEM2(Ram_SbrChannel, SBR_CHANNEL, 1, (8))
+C_ALLOC_MEM2(Ram_SbrElement, SBR_ELEMENT, 1, (8))
+
+/*! Filter states for QMF-analysis. <br>
+ Dimension: #MAXNRSBRCHANNELS * #SBR_QMF_FILTER_LENGTH
+*/
+C_AALLOC_MEM2_L(Ram_Sbr_QmfStatesAnalysis, FIXP_QAS, 640, (8), SECT_DATA_L1)
+
+/*! Matrix holding the quota values for all estimates, all channels
+ Dimension #MAXNRSBRCHANNELS * +#SBR_QMF_CHANNELS* #MAX_NO_OF_ESTIMATES
+*/
+C_ALLOC_MEM2_L(Ram_Sbr_quotaMatrix, FIXP_DBL, (MAX_NO_OF_ESTIMATES * 64), (8),
+ SECT_DATA_L1)
+
+/*! Matrix holding the sign values for all estimates, all channels
+ Dimension #MAXNRSBRCHANNELS * +#SBR_QMF_CHANNELS* #MAX_NO_OF_ESTIMATES
+*/
+C_ALLOC_MEM2(Ram_Sbr_signMatrix, INT, (MAX_NO_OF_ESTIMATES * 64), (8))
+
+/*! Frequency band table (low res) <br>
+ Dimension #MAX_FREQ_COEFFS/2+1
+*/
+C_ALLOC_MEM2(Ram_Sbr_freqBandTableLO, UCHAR, (MAX_FREQ_COEFFS / 2 + 1), (8))
+
+/*! Frequency band table (high res) <br>
+ Dimension #MAX_FREQ_COEFFS +1
+*/
+C_ALLOC_MEM2(Ram_Sbr_freqBandTableHI, UCHAR, (MAX_FREQ_COEFFS + 1), (8))
+
+/*! vk matser table <br>
+ Dimension #MAX_FREQ_COEFFS +1
+*/
+C_ALLOC_MEM2(Ram_Sbr_v_k_master, UCHAR, (MAX_FREQ_COEFFS + 1), (8))
+
+/*
+ Missing harmonics detection
+*/
+
+/*! sbr_detectionVectors <br>
+ Dimension #MAX_NUM_CHANNELS*#MAX_NO_OF_ESTIMATES*#MAX_FREQ_COEFFS]
+*/
+C_ALLOC_MEM2(Ram_Sbr_detectionVectors, UCHAR,
+ (MAX_NO_OF_ESTIMATES * MAX_FREQ_COEFFS), (8))
+
+/*! sbr_prevCompVec[ <br>
+ Dimension #MAX_NUM_CHANNELS*#MAX_FREQ_COEFFS]
+*/
+C_ALLOC_MEM2(Ram_Sbr_prevEnvelopeCompensation, UCHAR, MAX_FREQ_COEFFS, (8))
+/*! sbr_guideScfb[ <br>
+ Dimension #MAX_NUM_CHANNELS*#MAX_FREQ_COEFFS]
+*/
+C_ALLOC_MEM2(Ram_Sbr_guideScfb, UCHAR, MAX_FREQ_COEFFS, (8))
+
+/*! sbr_guideVectorDetected <br>
+ Dimension #MAX_NUM_CHANNELS*#MAX_NO_OF_ESTIMATES*#MAX_FREQ_COEFFS]
+*/
+C_ALLOC_MEM2(Ram_Sbr_guideVectorDetected, UCHAR,
+ (MAX_NO_OF_ESTIMATES * MAX_FREQ_COEFFS), (8))
+C_ALLOC_MEM2(Ram_Sbr_guideVectorDiff, FIXP_DBL,
+ (MAX_NO_OF_ESTIMATES * MAX_FREQ_COEFFS), (8))
+C_ALLOC_MEM2(Ram_Sbr_guideVectorOrig, FIXP_DBL,
+ (MAX_NO_OF_ESTIMATES * MAX_FREQ_COEFFS), (8))
+
+/*
+ Static Parametric Stereo memory
+*/
+C_AALLOC_MEM_L(Ram_PsQmfStatesSynthesis, FIXP_DBL, 640 / 2, SECT_DATA_L1)
+
+C_ALLOC_MEM_L(Ram_PsEncode, PS_ENCODE, 1, SECT_DATA_L1)
+C_ALLOC_MEM(Ram_ParamStereo, PARAMETRIC_STEREO, 1)
+
+/* @} */
+
+/*!
+ \name DynamicSbrData
+
+ Dynamic memory areas, might be reused in other algorithm sections,
+ e.g. the core encoder.
+*/
+/* @{ */
+
+/*! Energy buffer for envelope extraction <br>
+ Dimension #MAXNRSBRCHANNELS * +#SBR_QMF_SLOTS * #SBR_QMF_CHANNELS
+*/
+C_ALLOC_MEM2(Ram_Sbr_envYBuffer, FIXP_DBL, (32 / 2 * 64), (8))
+
+FIXP_DBL* GetRam_Sbr_envYBuffer(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 + OFFSET_NRG + (n*Y_2_BUF_BYTE)) is sufficiently aligned, so
+ * the cast is safe */
+ return reinterpret_cast<FIXP_DBL*>(
+ reinterpret_cast<void*>(dynamic_RAM + OFFSET_NRG + (n * Y_2_BUF_BYTE)));
+}
+
+/*
+ * QMF data
+ */
+/* The SBR encoder uses a single channel overlapping buffer set (always n=0),
+ * but PS does not. */
+FIXP_DBL* GetRam_Sbr_envRBuffer(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 + OFFSET_QMF + (n*(ENV_R_BUFF_BYTE+ENV_I_BUFF_BYTE))) is
+ * sufficiently aligned, so the cast is safe */
+ return reinterpret_cast<FIXP_DBL*>(reinterpret_cast<void*>(
+ dynamic_RAM + OFFSET_QMF + (n * (ENV_R_BUFF_BYTE + ENV_I_BUFF_BYTE))));
+}
+FIXP_DBL* GetRam_Sbr_envIBuffer(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 + OFFSET_QMF + (ENV_R_BUFF_BYTE) +
+ * (n*(ENV_R_BUFF_BYTE+ENV_I_BUFF_BYTE))) is sufficiently aligned, so the cast
+ * is safe */
+ return reinterpret_cast<FIXP_DBL*>(
+ reinterpret_cast<void*>(dynamic_RAM + OFFSET_QMF + (ENV_R_BUFF_BYTE) +
+ (n * (ENV_R_BUFF_BYTE + ENV_I_BUFF_BYTE))));
+}
+
+/* @} */