Commit 66d76646 authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
Browse files

Optimization for tcx_scalar_quantization_ivas_fx function 

changes are under macro: OPT_MCT_ENC_V2_NBE
stream used: IVAS_cod -mc 7_1_4 -max_band fb 192000 48 stv714MC48c.wav mc_7_1_4.bit (MCT_714_192kbps_FB)
Around 18 WMOPs reduced
parent 86e64776

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -77,6 +77,7 @@ 




/* Note: each compile switch (FIX_1101_...) is independent from the other ones */

#define OPT_MCT_ENC_V2_NBE

#define OPT_MCT_ENC_V1_NBE

#define OPT_MCT_ENC_V1_BE

#define OPT_SBA_REND_V1_BE

lib_enc/tcx_utils_enc_fx.c

+31 −0
Original line number Diff line number Diff line
@@ -1355,23 +1355,37 @@ void tcx_scalar_quantization_ivas_fx( 
{

    Word16 i, tmp16, s;

    Word32 tmp32, offs32;

#ifdef OPT_MCT_ENC_V2_NBE

    Word32 offs32_1;

    Word32 offset_Q16 = L_shl( offset, 1 ); // Q16

#endif





    /* common exponent for x and gain for comparison */

    tmp16 = sub( gain_e, x_e );

#ifdef OPT_MCT_ENC_V2_NBE

    tmp32 = L_shl_sat( L_deposit_h( gain ), tmp16 ); // exp:x_e

#else

    tmp32 = L_shl( L_deposit_h( gain ), s_max( -31, s_min( tmp16, 0 ) ) );

    tmp16 = negate( s_max( tmp16, 0 ) );

#endif



    i = sub( L_frame, 1 );

    IF( memQuantZeros_fx != NULL )

    {

        test();

#ifdef OPT_MCT_ENC_V2_NBE

        FOR( ; ( ( memQuantZeros_fx[i] != 0 ) && ( L_abs( x[i] ) < tmp32 ) ); i-- )

#else

        WHILE( ( memQuantZeros_fx[i] != 0 ) && ( LT_32( L_abs( L_shl( x[i], tmp16 ) ), tmp32 ) ) )

#endif

        {

            test();

            xq[i] = 0;

            move16();

#ifndef OPT_MCT_ENC_V2_NBE

            i = sub( i, 1 );

#endif

        }

    }
@@ -1394,6 +1408,22 @@ void tcx_scalar_quantization_ivas_fx( 


    FOR( ; i >= 0; i-- )

    {

#ifdef OPT_MCT_ENC_V2_NBE

        offs32 = Mpy_32_16_1( x[i], gain );

        offs32 = L_shl_sat( offs32, s ); /* convert to 15Q16 */



        offs32_1 = L_add_sat( offs32, offset_Q16 ); /*15Q16 */

        tmp16 = extract_h( offs32_1 );

        IF( x[i] < 0 )

        {

            offs32 = L_sub_sat( offs32, offset_Q16 ); /*15Q16 */

            tmp16 = extract_h( offs32 );

            if ( L_mac_sat( offs32, tmp16, -ONE_IN_Q15 ) > 0 )

            {

                tmp16 = add( tmp16, 1 );

            }

        }

#else

        offs32 = Mpy_32_16_1( x[i], gain ); /* multiply */

        offs32 = L_shl_sat( offs32, s );    /* convert to 15Q16 */

        IF( x[i] > 0 )
@@ -1414,6 +1444,7 @@ void tcx_scalar_quantization_ivas_fx( 
                tmp16 = add( tmp16, 1 );

            }

        }

#endif

        xq[i] = tmp16;

        move16();

    }