xref: /aosp_15_r20/external/aac/libDRCdec/src/drcDec_rom.cpp (revision e54365361535b070c2db7374cec45c159c7d0e7a)

/* -----------------------------------------------------------------------------
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
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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
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already be covered under those patent licenses when it is used for those
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Commercially-licensed AAC software libraries, including floating-point versions
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Attention: Audio and Multimedia Departments - FDK AAC LL
Am Wolfsmantel 33
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www.iis.fraunhofer.de/amm
[email protected]
----------------------------------------------------------------------------- */

/************************* MPEG-D DRC decoder library **************************

   Author(s):

   Description:

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

#include "drcDec_types.h"
#include "drcDec_rom.h"

const SCHAR deltaGain_codingProfile_0_1_huffman[24][2] = {
    {1, 2},    {3, 4},     {-63, -65}, {5, -66},   {-64, 6},   {-80, 7},
    {8, 9},    {-68, 10},  {11, 12},   {-56, -67}, {-61, 13},  {-62, -69},
    {14, 15},  {16, -72},  {-71, 17},  {-70, -60}, {18, -59},  {19, 20},
    {21, -79}, {-57, -73}, {22, -58},  {-76, 23},  {-75, -74}, {-78, -77}};

const SCHAR deltaGain_codingProfile_2_huffman[48][2] = {
    {1, 2},     {3, 4},     {5, 6},     {7, 8},     {9, 10},    {11, 12},
    {13, -65},  {14, -64},  {15, -66},  {16, -67},  {17, 18},   {19, -68},
    {20, -63},  {-69, 21},  {-59, 22},  {-61, -62}, {-60, 23},  {24, -58},
    {-70, -57}, {-56, -71}, {25, 26},   {27, -55},  {-72, 28},  {-54, 29},
    {-53, 30},  {-73, -52}, {31, -74},  {32, 33},   {-75, 34},  {-76, 35},
    {-51, 36},  {-78, 37},  {-77, 38},  {-96, 39},  {-48, 40},  {-50, -79},
    {41, 42},   {-80, -81}, {-82, 43},  {44, -49},  {45, -84},  {-83, -89},
    {-86, 46},  {-90, -85}, {-91, -93}, {-92, 47},  {-88, -87}, {-95, -94}};

const FIXP_SGL slopeSteepness[] = {FL2FXCONST_SGL(-3.0518f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(-1.2207f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(-0.4883f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(-0.1953f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(-0.0781f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(-0.0312f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(-0.005f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(0.0f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(0.005f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(0.0312f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(0.0781f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(0.1953f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(0.4883f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(1.2207f / (float)(1 << 2)),
                                   FL2FXCONST_SGL(3.0518f / (float)(1 << 2))};

const SCHAR slopeSteepness_huffman[14][2] = {
    {1, -57},  {-58, 2},   {3, 4},    {5, 6},    {7, -56},
    {8, -60},  {-61, -55}, {9, -59},  {10, -54}, {-64, 11},
    {-51, 12}, {-62, -50}, {-63, 13}, {-52, -53}};

const FIXP_DBL downmixCoeff[] = {
    FL2FXCONST_DBL(1.0000000000 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.9440608763 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.8912509381 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.8413951416 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.7943282347 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.7498942093 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.7079457844 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.6683439176 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.6309573445 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5956621435 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5623413252 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5308844442 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5011872336 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.4216965034 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.3548133892 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.0000000000 / (float)(1 << 2))};

const FIXP_DBL downmixCoeffV1[] = {
    FL2FXCONST_DBL(3.1622776602 / (float)(1 << 2)),
    FL2FXCONST_DBL(1.9952623150 / (float)(1 << 2)),
    FL2FXCONST_DBL(1.6788040181 / (float)(1 << 2)),
    FL2FXCONST_DBL(1.4125375446 / (float)(1 << 2)),
    FL2FXCONST_DBL(1.1885022274 / (float)(1 << 2)),
    FL2FXCONST_DBL(1.0000000000 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.9440608763 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.8912509381 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.8413951416 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.7943282347 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.7498942093 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.7079457844 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.6683439176 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.6309573445 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5956621435 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5623413252 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5308844442 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.5011872336 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.4731512590 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.4466835922 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.4216965034 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.3981071706 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.3548133892 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.3162277660 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.2818382931 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.2511886432 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.1778279410 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.1000000000 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.0562341325 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.0316227766 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.0100000000 / (float)(1 << 2)),
    FL2FXCONST_DBL(0.0000000000 / (float)(1 << 2))};

const CUSTOM_DRC_CHAR_SIGMOID cicpDrcCharSigmoidLeft[] = {
    {FL2FXCONST_SGL(32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.0f / (float)(1 << 2)),
     FL2FXCONST_SGL(9.0f / (float)(1 << 5)), 0}, /* 1 */
    {FL2FXCONST_SGL(32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.2f / (float)(1 << 2)),
     FL2FXCONST_SGL(9.0f / (float)(1 << 5)), 0}, /* 2 */
    {FL2FXCONST_SGL(32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.4f / (float)(1 << 2)),
     FL2FXCONST_SGL(9.0f / (float)(1 << 5)), 0}, /* 3 */
    {FL2FXCONST_SGL(32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.6f / (float)(1 << 2)),
     FL2FXCONST_SGL(9.0f / (float)(1 << 5)), 0}, /* 4 */
    {FL2FXCONST_SGL(32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.8f / (float)(1 << 2)),
     FL2FXCONST_SGL(6.0f / (float)(1 << 5)), 0}, /* 5 */
    {FL2FXCONST_SGL(32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(1.0f / (float)(1 << 2)),
     FL2FXCONST_SGL(5.0f / (float)(1 << 5)), 0}, /* 6 */
};

const CUSTOM_DRC_CHAR_SIGMOID cicpDrcCharSigmoidRight[] = {
    {FL2FXCONST_SGL(-32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.0f / (float)(1 << 2)),
     FL2FXCONST_SGL(12.0f / (float)(1 << 5)), 0}, /* 1 */
    {FL2FXCONST_SGL(-32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.2f / (float)(1 << 2)),
     FL2FXCONST_SGL(12.0f / (float)(1 << 5)), 0}, /* 2 */
    {FL2FXCONST_SGL(-32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.4f / (float)(1 << 2)),
     FL2FXCONST_SGL(12.0f / (float)(1 << 5)), 0}, /* 3 */
    {FL2FXCONST_SGL(-32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.6f / (float)(1 << 2)),
     FL2FXCONST_SGL(10.0f / (float)(1 << 5)), 0}, /* 4 */
    {FL2FXCONST_SGL(-32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(0.8f / (float)(1 << 2)),
     FL2FXCONST_SGL(8.0f / (float)(1 << 5)), 0}, /* 5 */
    {FL2FXCONST_SGL(-32.0f / (float)(1 << 6)),
     FL2FXCONST_SGL(1.0f / (float)(1 << 2)),
     FL2FXCONST_SGL(6.0f / (float)(1 << 5)), 0}, /* 6 */
};

const CUSTOM_DRC_CHAR_NODES cicpDrcCharNodesLeft[] = {
    {2,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-41.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-53.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(6.0f / (float)(1 << 7))}}, /* 7 */
    {1,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-43.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(6.0f / (float)(1 << 7))}}, /* 8 */
    {2,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-41.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-65.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(12.0f / (float)(1 << 7))}}, /* 9 */
    {1,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-55.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(12.0f / (float)(1 << 7))}}, /* 10 */
    {1,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-50.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(15.0f / (float)(1 << 7))}} /* 11 */
};

const CUSTOM_DRC_CHAR_NODES cicpDrcCharNodesRight[] = {
    {4,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-21.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-11.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(9.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(19.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-5.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-24.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-34.0f / (float)(1 << 7))}}, /* 7 */
    {4,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-26.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-16.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(4.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(14.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-5.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-24.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-34.0f / (float)(1 << 7))}}, /* 8 */
    {3,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-21.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(9.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(29.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-15.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-35.0f / (float)(1 << 7))}}, /* 9 */
    {4,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-26.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-16.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(4.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(14.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-5.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-24.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-34.0f / (float)(1 << 7))}}, /* 10 */
    {4,
     {FL2FXCONST_SGL(-31.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-26.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-16.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(4.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(14.0f / (float)(1 << 7))},
     {FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(0.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-5.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-24.0f / (float)(1 << 7)),
      FL2FXCONST_SGL(-34.0f / (float)(1 << 7))}} /* 11 */
};