xref: /external/aac/libSBRenc/src/sbrenc_ram.cpp

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

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 1.    INTRODUCTION
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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
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----------------------------------------------------------------------------- */

/**************************** 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))));
}

/* @} */