Commit 24a16072 authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
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Fix for 3GPP issue 1778: Different codebook precision at encoder and decoder for McMASA and MASA 

Link #1778
Combined McMASA_LFEGain_vectors_fx_q13 and McMASA_LFEGain_vectors_fx_q25 into McMASA_LFEGain_vectors_fx maintained in Q25.
parent fd387658

lib_com/ivas_rom_com_fx.c

+1 −13
Original line number Diff line number Diff line
@@ -483,20 +483,8 @@ const Word32 dft_res_gains_q_fx[][2] = { 


};



// Q13

const Word16 McMASA_LFEGain_vectors_fx_q13[64] = {

    3113, 2703, 1556, 1638, -1311, -1802, -2867, -2785,

    4096, 4096, 4096, 4096, -6554, -3277, 8356, 819,

    -4096, -4096, -4096, -4096, -4588, -983, -6390, 11141,

    -8356, 9667, -4669, 2703, 5898, -9257, 7946, -5079,

    -7455, 7619, 8192, -9011, 14172, -1884, -6390, -6881,

    7782, -13107, -2785, 7619, 7127, 3850, -15565, 4260,

    5489, 11633, -7946, -10158, 6799, 4751, 4997, -16712,

    -6554, -12943, 6717, 11633, -17531, 2130, 6881, 8356

};



// Q25

const Word32 McMASA_LFEGain_vectors_fx_q25[64] = {

const Word32 McMASA_LFEGain_vectors_fx[64] = {

    12750684, 11072963, 6375342, 6710886, /* 1st bit */

    -5368709, -7381975, -11744051, -11408507,

    16777216, 16777216, 16777216, 16777216, /* 2nd bit*/

lib_com/ivas_rom_com_fx.h

+1 −2
Original line number Diff line number Diff line
@@ -56,8 +56,7 @@ extern const Word16 dft_trigo_12k8_fx[STEREO_DFT_N_12k8_ENC / 4 + 1]; 
extern const Word16 dft_trigo_32k_fx[STEREO_DFT_N_32k_ENC / 4 + 1];

extern const Word16 dft_trigo_48k_fx[STEREO_DFT_N_MAX_ENC / 4 + 1];

extern const Word16 gridEq_Table[NO_THETA16_MAX];

extern const Word16 McMASA_LFEGain_vectors_fx_q13[64];

extern const Word32 McMASA_LFEGain_vectors_fx_q25[64];

extern const Word32 McMASA_LFEGain_vectors_fx[64]; /* Q25 */



extern const Word16 ivas_divde_255[256];

lib_dec/ivas_masa_dec_fx.c

+5 −5
Original line number Diff line number Diff line
@@ -1533,7 +1533,7 @@ static Word16 decode_lfe_to_total_energy_ratio_fx( 
                }

                ELSE

                {

                    tmp16 = shr( McMASA_LFEGain_vectors_fx_q13[4 * lfeToTotalEnergyRatioIndices[2] + i], 1 ); /* Q12 */

                    tmp16 = shr( extract_l( L_shr_r( McMASA_LFEGain_vectors_fx[4 * lfeToTotalEnergyRatioIndices[2] + i], Q12 ) ), 1 ); /* Q12 */

                    tmp16 = add( log2LFEaverage_fx, tmp16 );                                                                           /* Q12 */

                    tmp32 = BASOP_util_Pow2( L_deposit_h( tmp16 ), 15 - Q12, &exp );                                                   /* Q(31 - exp) */

                    tmp16 = round_fx( tmp32 );                                                                                         /* Q(31-exp) -> Q(15 - exp) */

lib_enc/ivas_masa_enc_fx.c

+1 −1
Original line number Diff line number Diff line
@@ -2842,7 +2842,7 @@ static Word16 encode_lfe_to_total_energy_ratio_fx( 


                IF( VQLevels > 0 )

                {

                    lfeToTotalEnergyRatioIndices[2] = vquant_ivas_fx( log2LFEratio, 0, xqv, McMASA_LFEGain_vectors_fx_q25, 4, VQLevels );

                    lfeToTotalEnergyRatioIndices[2] = vquant_ivas_fx( log2LFEratio, 0, xqv, McMASA_LFEGain_vectors_fx, 4, VQLevels );

                    move16();

                }

            }