Commit 30d55ece authored by Jan Kiene's avatar Jan Kiene
Browse files

use saturated subtraction in loop

parent 169b659a

lib_dec/ivas_binRenderer_internal_fx.c

+8 −4
Original line number Diff line number Diff line
@@ -1098,20 +1098,24 @@ static void ivas_binaural_obtain_DMX_fx( 
            FOR( chIdx = 0; chIdx < hBinRenderer->nInChannels; chIdx++ )

            {

                Word32 foa_const_fx = L_shl( hBinRenderer->hReverb->foa_enc_fx[chIdx][1], 1 ); // Q30

                Word32 one_add_foa_const, one_sub_foa_const;



                one_add_foa_const = L_add( ONE_IN_Q30, foa_const_fx ); // Q30

                one_sub_foa_const = L_sub_sat( ONE_IN_Q30, foa_const_fx ); // Q30



                inRealPtr_fx = (Word32 *) &( RealBuffer[chIdx][k][0] );

                inImagPtr_fx = (Word32 *) &( ImagBuffer[chIdx][k][0] );



                FOR( bandIdx = 0; bandIdx < hBinRenderer->conv_band; bandIdx++ )

                {

                    outRealLeftPtr_fx[bandIdx] = L_add( outRealLeftPtr_fx[bandIdx], Mpy_32_32( inRealPtr_fx[bandIdx], L_add( ONE_IN_Q30, foa_const_fx ) ) ); // Q_in - 1

                    outRealLeftPtr_fx[bandIdx] = L_add( outRealLeftPtr_fx[bandIdx], Mpy_32_32( inRealPtr_fx[bandIdx], one_add_foa_const ) ); // Q_in - 1

                    move32();

                    outImagLeftPtr_fx[bandIdx] = L_add( outImagLeftPtr_fx[bandIdx], Mpy_32_32( inImagPtr_fx[bandIdx], L_add( ONE_IN_Q30, foa_const_fx ) ) ); // Q_in - 1

                    outImagLeftPtr_fx[bandIdx] = L_add( outImagLeftPtr_fx[bandIdx], Mpy_32_32( inImagPtr_fx[bandIdx], one_add_foa_const ) ); // Q_in - 1

                    move32();



                    outRealRightPtr_fx[bandIdx] = L_add( outRealRightPtr_fx[bandIdx], Mpy_32_32( inRealPtr_fx[bandIdx], L_sub( ONE_IN_Q30, foa_const_fx ) ) ); // Q_in - 1

                    outRealRightPtr_fx[bandIdx] = L_add( outRealRightPtr_fx[bandIdx], Mpy_32_32( inRealPtr_fx[bandIdx], one_sub_foa_const ) ); // Q_in - 1

                    move32();

                    outImagRightPtr_fx[bandIdx] = L_add( outImagRightPtr_fx[bandIdx], Mpy_32_32( inImagPtr_fx[bandIdx], L_sub( ONE_IN_Q30, foa_const_fx ) ) ); // Q_in - 1

                    outImagRightPtr_fx[bandIdx] = L_add( outImagRightPtr_fx[bandIdx], Mpy_32_32( inImagPtr_fx[bandIdx], one_sub_foa_const ) ); // Q_in - 1

                    move32();

                }

            }