Fix for new stream shared (1f7ede43) · Commits · SA4 / Audio / IVAS BASOP

lib_com/prot_fx.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -9969,6 +9969,12 @@ Word16 usdequant_fx( /* Qx*/
		const Word16 delta /* i: quantization step Qy*/
		);

		Word32 usdequant32_fx( /* Qx*/
		const Word16 idx, /* i: quantizer index Q0*/
		const Word32 qlow, /* i: lowest codebook entry (index 0) Qx*/
		const Word32 delta /* i: quantization step Qy*/
		);

		Word16 usquant_fx( /* o: index of the winning codeword */
		const Word16 x, /* i: scalar value to quantize Qx*/
		Word16 xq, / o: quantized value Qx*/

lib_com/tools_fx.c

+24 −0

Original line number	Diff line number	Diff line
		@@ -284,6 +284,30 @@ Word16 usdequant_fx( /* Qx*/
		return ( g );
		}

		Word32 usdequant32_fx( /* Qx*/
		const Word16 idx, /* i: quantizer index Q0*/
		const Word32 qlow, /* i: lowest codebook entry (index 0) Qx*/
		const Word32 delta /* i: quantization step Qx-1*/
		)
		{
		Word32 g;
		Word64 L_tmp;

		/g = idx delta + qlow;*/
		L_tmp = W_deposit32_l( qlow ); /Qx /
		L_tmp = W_mac_32_16( L_tmp, delta, idx );
		IF( GE_64( L_tmp, MAX_32 ) )
		{
		g = MAX_32;
		move32();
		}
		ELSE
		{
		g = W_extract_l(L_tmp); /Qx /
		}
		return ( g );
		}

		/-------------------------------------------------------------------
		* usquant()
		*

lib_dec/ivas_qmetadata_dec_fx.c

+16 −9

Original line number	Diff line number	Diff line
		@@ -72,8 +72,7 @@ static Word16 read_coherence_data_fx( UWord16 bitstream, Word16 p_bit_pos, IVA
		static Word16 ivas_qmetadata_raw_decode_dir_512_fx( IVAS_QDIRECTION q_direction, UWord16 bitstream, Word16 index, const Word16 nbands, const Word16 start_band, const SPHERICAL_GRID_DATA sph_grid16 );
		static Word16 read_surround_coherence( UWord16 bitstream, Word16 p_bit_pos, IVAS_QMETADATA *hQMetaData );
		static ivas_error read_huf( Word16 num_bits_read, const UWord16 bitstream, UWord16 out, const Word16 start_pos, const Word16 len, const Word16 huff_code, const Word16 max_len );
		const Word16 inv_dfRatio_qsteps[9] = { 0, 0, ONE_IN_Q14, 0, 5461, 0, 0, 0, 2341 }; // Q14

		const Word32 inv_dfRatio_qsteps[9] = { 0, 0, ONE_IN_Q30, 0, 357913941, 0, 0, 0, 153391689 }; // Q30

		/-----------------------------------------------------------------------
		* Global function definitions
		@@ -223,7 +222,7 @@ Word16 ivas_qmetadata_dec_decode(
		IF( EQ_16( hQMetaData->twoDirBands[b], 1 ) )
		{
		Word32 diffRatio_fx, dir1ratio_fx, dir2ratio_fx;
		Word16 dfRatio_fx;
		Word32 dfRatio_fx;
		Word16 dfRatio_qsteps;

		diffRatio_fx = diffuseness_reconstructions_fx[hQMetaData->q_direction[0].band_data[b].energy_ratio_index[0]]; // Q30
		@@ -233,16 +232,24 @@ Word16 ivas_qmetadata_dec_decode(
		/* already encoded as total and ratios in HO-DirAC */
		IF( hodirac_flag )
		{

		dfRatio_fx = usdequant_fx( hQMetaData->q_direction[1].band_data[dir2band].energy_ratio_index[0], 0 /* Q15 */, inv_dfRatio_qsteps[dfRatio_qsteps] ); // Q15
		dfRatio_fx = usdequant32_fx( hQMetaData->q_direction[1].band_data[dir2band].energy_ratio_index[0], 0 /* Q15 */, inv_dfRatio_qsteps[dfRatio_qsteps] ); // Q31
		dir1ratio_fx = L_sub( ONE_IN_Q30, diffRatio_fx );
		dir2ratio_fx = L_shl( (Word32) dfRatio_fx, Q15 ); /Q30/
		dir2ratio_fx = L_shr( dfRatio_fx, 1 ); /Q30/
		}
		ELSE
		{
		IF( EQ_16( hQMetaData->q_direction[1].band_data[dir2band].energy_ratio_index[0], sub( dfRatio_qsteps, 1 ) ) )
		{
		dfRatio_fx = MAX_32; // Q31
		move16();
		dir1ratio_fx = L_sub( ONE_IN_Q30, diffRatio_fx ); // Q30
		}
		ELSE
		{
		dfRatio_fx = usdequant_fx( hQMetaData->q_direction[1].band_data[dir2band].energy_ratio_index[0], shr( MAX_16, 1 ), shr( inv_dfRatio_qsteps[dfRatio_qsteps], 1 ) ); // Q15
		dfRatio_fx = usdequant32_fx( hQMetaData->q_direction[1].band_data[dir2band].energy_ratio_index[0], L_shr( MAX_32, 1 ), L_shr( inv_dfRatio_qsteps[dfRatio_qsteps], 1 ) ); // Q31
		dir1ratio_fx = Mpy_32_32( L_sub( ONE_IN_Q30, diffRatio_fx ), dfRatio_fx ); // Q30
		}

		dir1ratio_fx = Mpy_32_16_1( L_sub( ONE_IN_Q30, diffRatio_fx ), dfRatio_fx ); // Q30
		dir2ratio_fx = L_sub( L_sub( ONE_IN_Q30, diffRatio_fx ), dir1ratio_fx ); // Q30
		}