/src/aac/libAACdec/src/aac_ram.cpp

Source
/* -----------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android

© Copyright  1995 - 2020 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
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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.

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This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
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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):   Josef Hoepfl

   Description:

*******************************************************************************/

#include "aac_ram.h"
#include "aac_rom.h"

#define WORKBUFFER1_TAG 0
#define WORKBUFFER2_TAG 1
#define WORKBUFFER5_TAG 6
#define WORKBUFFER6_TAG 7

/*! The structure AAC_DECODER_INSTANCE is the top level structure holding all
   decoder configurations, handles and structs.
 */
C_ALLOC_MEM(AacDecoder, struct AAC_DECODER_INSTANCE, 1)

/*!
  \name StaticAacData

  Static memory areas, must not be overwritten in other sections of the decoder
*/
/* @{ */

/*! The structure CAacDecoderStaticChannelInfo contains the static sideinfo
   which is needed for the decoding of one aac channel. <br> Dimension:
   #AacDecoderChannels                                                      */
C_ALLOC_MEM2(AacDecoderStaticChannelInfo, CAacDecoderStaticChannelInfo, 1, (8))

/*! The structure CAacDecoderChannelInfo contains the dynamic sideinfo which is
   needed for the decoding of one aac channel. <br> Dimension:
   #AacDecoderChannels                                                      */
C_AALLOC_MEM2(AacDecoderChannelInfo, CAacDecoderChannelInfo, 1, (8))

/*! Overlap buffer */
C_AALLOC_MEM2(OverlapBuffer, FIXP_DBL, OverlapBufferSize, (8))

C_ALLOC_MEM(DrcInfo, CDrcInfo, 1)

/*! The structure CpePersistentData holds the persistent data shared by both
   channels of a CPE. <br> It needs to be allocated for each CPE. <br>
    Dimension: 1 */
C_ALLOC_MEM(CpePersistentData, CpePersistentData, 1)

/*! The structure CCplxPredictionData holds data for complex stereo prediction.
   <br> Dimension: 1
 */
C_ALLOC_MEM(CplxPredictionData, CCplxPredictionData, 1)

/*! The buffer holds time samples for the crossfade in case of an USAC DASH IPF
   config change Dimension: (8)
 */
C_ALLOC_MEM2(TimeDataFlush, PCM_DEC, TIME_DATA_FLUSH_SIZE, (8))

/* @} */

/*!
  \name DynamicAacData

  Dynamic memory areas, might be reused in other algorithm sections,
  e.g. the sbr decoder
*/

/* Take into consideration to make use of the WorkBufferCore[3/4] for decoder
 * configurations with more than 2 channels */
C_ALLOC_MEM_OVERLAY(WorkBufferCore2, FIXP_DBL, ((8) * 1024), SECT_DATA_L2,
                    WORKBUFFER2_TAG)

C_ALLOC_MEM_OVERLAY(WorkBufferCore6, SCHAR,
                    fMax((INT)(sizeof(FIXP_DBL) * WB_SECTION_SIZE),
                         (INT)sizeof(CAacDecoderCommonData)),
                    SECT_DATA_L2, WORKBUFFER6_TAG)

C_ALLOC_MEM_OVERLAY(WorkBufferCore1, CWorkBufferCore1, 1, SECT_DATA_L1,
                    WORKBUFFER1_TAG)

/* double buffer size needed for de-/interleaving */
C_ALLOC_MEM_OVERLAY(WorkBufferCore5, PCM_DEC, (8) * (1024 * 4) * 2,
                    SECT_DATA_EXTERN, WORKBUFFER5_TAG)

Coverage Report

Created: 2025-10-28 06:42