qmetadata file functions and subfuncs converted (879152dc) · Commits · SA4 / Audio / IVAS BASOP

lib_com/ivas_cnst.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -1131,9 +1131,17 @@ enum

		#define MASA_TRANSP_BITS 1
		#define NO_BITS_MASA_ISM_NO_OBJ 2
		#ifdef IVAS_FLOAT_FIXED
		#define MASA2TOTAL_THR 0.979965f // Temporary
		//Maximum error in float to fixed conversion : 0.005%
		//Assuming the accuracy of 99.995%
		//New value = 99.995 / 100 * 0.98 = 0.979951
		#else
		#define MASA2TOTAL_THR 0.98f
		#endif
		#define BITS_MASA2TOTTAL_DCT0 6
		#define STEP_M2T 0.1f
		#define STEP_M2T_FX 214748364
		#define MASA_HEADER_BITS 2
		#define MASA_SUBFRAME_BITS 1
		#define MASA_LOWBITRATE_MODE_BITS 1

lib_com/ivas_dirac_com.c

+223 −15

Original line number	Diff line number	Diff line
		@@ -48,6 +48,9 @@

		static uint16_t deindex_sph_idx_general( const int16_t idx_sph, const int16_t no_bits, float theta_dec, float phi_dec, uint16_t *p_id_phi, const MC_LS_SETUP mc_format );

		#ifdef IVAS_FLOAT_FIXED
		static UWord16 deindex_sph_idx_general_fx( const Word16 idx_sph, const Word16 no_bits, Word32 theta_dec_fx, Word32 phi_dec_fx, UWord16 *p_id_phi, const MC_LS_SETUP mc_format );
		#endif

		/*-------------------------------------------------------------------------
		* ivas_get_hodirac_flag()
		@@ -162,10 +165,8 @@ ivas_error ivas_dirac_config(
		hConfig->dec_param_estim = FALSE;
		if ( ivas_format == SBA_FORMAT \|\| ivas_format == SBA_ISM_FORMAT ) /* skip for MASA decoder */
		{
		if ( ( error = ivas_dirac_sba_config( hQMetaData, element_mode, ivas_total_brate, sba_order, hConfig->nbands - spar_dirac_split_band
		,
		ivas_format
		) ) != IVAS_ERR_OK )
		if ( ( error = ivas_dirac_sba_config( hQMetaData, element_mode, ivas_total_brate, sba_order, hConfig->nbands - spar_dirac_split_band,
		ivas_format ) ) != IVAS_ERR_OK )
		{
		return error;
		}
		@@ -322,10 +323,8 @@ void ivas_get_dirac_sba_max_md_bits(
		int16_t *bits_frame_nominal,
		int16_t *metadata_max_bits,
		int16_t *qmetadata_max_bit_req,
		const int16_t nbands
		,
		IVAS_FORMAT ivas_format
		)
		const int16_t nbands,
		IVAS_FORMAT ivas_format )
		{
		if ( sba_total_brate <= IVAS_13k2 )
		{
		@@ -402,8 +401,7 @@ ivas_error ivas_dirac_sba_config(
		const int16_t sba_order, /* i : Ambisonic (SBA) order */
		const int16_t nbands /* i : number of frequency bands */
		,
		IVAS_FORMAT ivas_format
		)
		IVAS_FORMAT ivas_format )
		{
		int16_t nbands_coded;
		int16_t hodirac_flag;
		@@ -465,10 +463,8 @@ ivas_error ivas_dirac_sba_config(
		}
		}

		ivas_get_dirac_sba_max_md_bits( sba_total_brate, &hQMetaData->bits_frame_nominal, &hQMetaData->metadata_max_bits, &hQMetaData->qmetadata_max_bit_req, hQMetaData->q_direction[0].cfg.nbands
		,
		ivas_format
		);
		ivas_get_dirac_sba_max_md_bits( sba_total_brate, &hQMetaData->bits_frame_nominal, &hQMetaData->metadata_max_bits, &hQMetaData->qmetadata_max_bit_req, hQMetaData->q_direction[0].cfg.nbands,
		ivas_format );

		return error;
		}
		@@ -648,10 +644,60 @@ float deindex_azimuth(
		{
		phi_hat = companding_azimuth( phi_hat, mc_format, ( id_th * delta_theta_masa[no_bits - 3] > MC_MASA_THR_ELEVATION ), -1 );
		}

		return phi_hat;
		}

		#ifdef IVAS_FLOAT_FIXED
		Word32 deindex_azimuth_fx(
		Word16 id_phi, /* i : index */
		const Word16 no_bits, /* i : number of bits for the spherical grid */
		const Word16 id_th, /* i : elevation index */
		const Word16 remap, /* i : remapping flag */
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		)
		{
		Word16 flag_delta;
		Word32 dd_fx, delta_phi_fx;
		Word32 phi_hat_fx;
		IF( ( mc_format != MC_LS_SETUP_INVALID ) && ( no_bits == 2 ) )
		{
		IF( id_phi % 2 == 0 )
		{
		phi_hat_fx = cb_azi_chan_fx[id_phi / 2];
		}
		ELSE
		{
		phi_hat_fx = -cb_azi_chan_fx[( id_phi + 1 ) / 2];
		}
		return phi_hat_fx;
		}
		flag_delta = ( id_th % 2 == 1 );

		IF( remap )
		{
		id_phi = ivas_qmetadata_dereorder_generic( id_phi ) + ( no_phi_masa[no_bits - 1][id_th] >> 1 );
		}

		delta_phi_fx = Mpy_32_32( 1509949440, no_phi_masa_inv_fx[no_bits - 1][id_th] ); // q = 22
		IF( ( flag_delta == 1 ) && ( no_phi_masa[no_bits - 1][id_th] > 2 ) && mc_format == MC_LS_SETUP_INVALID )
		{
		dd_fx = Mpy_32_32( delta_phi_fx, 1073741824 ); // q = 22
		}
		ELSE
		{
		dd_fx = 0;
		}

		id_phi -= ( ( no_phi_masa[no_bits - 1][id_th] ) >> 1 );
		phi_hat_fx = L_add( id_phi * delta_phi_fx, dd_fx );
		IF( mc_format != MC_LS_SETUP_INVALID )
		{
		phi_hat_fx = companding_azimuth_fx( phi_hat_fx, mc_format, ( id_th * delta_theta_masa[no_bits - 3] > MC_MASA_THR_ELEVATION ), -1 );
		}
		return phi_hat_fx;
		}
		#endif


		/*----------------------------------------------------------------
		* deindex_spherical_component()
		@@ -698,6 +744,50 @@ void deindex_spherical_component(
		return;
		}

		#ifdef IVAS_FLOAT_FIXED
		void deindex_spherical_component_fx(
		const UWord16 sph_idx, /* i : spherical index */
		Word32 az_fx, / o : decoded azimuth value */
		Word32 el_fx, / o : decoded elevation value */
		UWord16 az_idx, / o : azimuth index */
		UWord16 el_idx, / o : elevation index */
		const UWord16 no_bits, /* i : number of bits for the spherical grid */
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		)
		{
		Word32 az_idx_fx;
		Word16 q_az_idx;
		assert( sph_idx < ( 1 << no_bits ) );
		SWITCH( no_bits )
		{
		case 0:
		*az_fx = 0;
		*el_fx = 0;
		*az_idx = 0;
		*el_idx = 0;
		BREAK;
		case 1:
		*az_idx = sph_idx;
		q_az_idx = norm_l( *az_idx );
		az_idx_fx = L_shl( *az_idx, q_az_idx );
		*az_fx = L_shl( Mpy_32_32( az_idx_fx, L_shl( -180, 22 ) ), 31 - q_az_idx );
		*el_fx = 0;
		*el_idx = 0;
		BREAK;
		case 2:
		*el_fx = 0;
		*el_idx = 0;
		*az_idx = sph_idx;
		az_fx = deindex_azimuth_fx( az_idx, no_bits, 0, 0, mc_format );
		BREAK;
		default:
		*el_idx = deindex_sph_idx_general_fx( sph_idx, no_bits, el_fx, az_fx, az_idx, mc_format );
		BREAK;
		}

		return;
		}
		#endif

		/*----------------------------------------------------------------
		* calculate_hodirac_sector_parameters()
		@@ -1022,3 +1112,121 @@ static uint16_t deindex_sph_idx_general(

		return id_th;
		}

		#ifdef IVAS_FLOAT_FIXED
		static UWord16 deindex_sph_idx_general_fx(
		const Word16 idx_sph, /* i : spherical index */
		const Word16 no_bits, /* i : number of bits in the spherical grid*/
		Word32 theta_dec_fx, / o : decoded elevation value */
		Word32 phi_dec_fx, / o : decoded azimuth value */
		UWord16 p_id_phi, / o : decoded azimuth index */
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		)
		{
		Word16 i;
		UWord16 id_th;
		Word16 q_id_th;
		Word32 id_th_fx;
		Word16 sign_theta;
		Word16 id_phi;
		Word16 cum_n[250];
		Word16 no_th;
		const Word16 *n;

		id_th = 0;
		id_phi = 0;
		sign_theta = 1;

		no_th = no_theta_masa[no_bits - 3];
		n = no_phi_masa[no_bits - 1];
		IF( mc_format != MC_LS_SETUP_INVALID )
		{
		/* indexing */

		cum_n[0] = n[0];
		IF( idx_sph >= cum_n[0] )
		{
		FOR( i = 1; i < no_th; i++ )
		{
		cum_n[i] = cum_n[i - 1] + n[i];
		IF( idx_sph < cum_n[i] )
		{
		id_th = i;
		id_phi = idx_sph - cum_n[i - 1];
		BREAK;
		}
		}
		}
		}
		ELSE
		{
		/* Starting from Equator, alternating positive and negative */
		cum_n[0] = n[0];
		IF( idx_sph >= cum_n[0] )
		{
		FOR( i = 1; i < no_th; i++ )
		{
		cum_n[2 * i - 1] = cum_n[2 * i - 2] + n[i];

		IF( idx_sph < cum_n[2 * i - 1] )
		{
		id_th = i;
		sign_theta = 1;
		id_phi = idx_sph - cum_n[2 * i - 2];
		BREAK;
		}

		cum_n[2 * i] = cum_n[2 * i - 1] + n[i];

		IF( idx_sph < cum_n[2 * i] )
		{
		id_th = i;
		sign_theta = -1;
		id_phi = idx_sph - cum_n[2 * i - 1];
		BREAK;
		}

		IF( i == ( no_th - 1 ) )
		{
		id_th = i;
		sign_theta = -1;
		id_phi = 0; /* idx_sph - cum_n[2i-1]; /
		BREAK;
		}
		}
		}
		}

		IF( id_th == 0 )
		{
		id_phi = idx_sph;
		}
		ELSE
		{
		IF( ( id_th == no_th - 1 ) && ( no_bits > 4 ) )
		{
		id_phi = 0;
		}
		}

		q_id_th = norm_l( id_th );
		id_th_fx = L_shl( id_th, q_id_th );
		*theta_dec_fx = L_shl( Mpy_32_32( id_th_fx, delta_theta_masa_fx[no_bits - 3] ), 31 - q_id_th );

		IF( *theta_dec_fx >= L_shl( 90, 22 ) )
		{
		theta_dec_fx = L_shl( 90, 22 ) sign_theta;
		*phi_dec_fx = 0;
		*p_id_phi = 0;
		}
		ELSE
		{
		theta_dec_fx = sign_theta;

		*phi_dec_fx = deindex_azimuth_fx( id_phi, no_bits, id_th, 0, mc_format );
		*p_id_phi = id_phi;
		}

		return id_th;
		}
		#endif
		No newline at end of file

lib_com/ivas_masa_com.c

+146 −0

Original line number	Diff line number	Diff line
		@@ -791,6 +791,152 @@ void deindex_sph_idx(
		return;
		}

		#ifdef IVAS_FLOAT_FIXED
		// void deindex_sph_idx(
		// const UWord16 sphIndex, /* i : Spherical index */
		// const SPHERICAL_GRID_DATA gridData, / i : Prepared spherical grid */
		// Word32 theta_fx, / o : Elevation */
		// Word32 phi_fx / o : Azimuth */
		//)
		//{
		// Word32 ba_crt_fx, del_crt_fx, div_crt_fx, a4_crt_fx;
		// Word32 estim;
		// Word32 base_low, base_up;
		// Word16 n_crt;
		// Word16 id_th;
		// Word16 sign_theta;
		// Word16 id_phi;
		// Word16 no_th = gridData->no_theta;
		// const Word16 *n = gridData->no_phi;
		// const Word32 ba_fx[3] = { 109465, 63736, 62894 }; // q = 9
		// const Word32 del_fx[3] = { 409511008, 666052608, 729124992 }; // q = 9
		// const Word32 div_fx[3] = { -121, -51, -47 }; // q = 9
		// const Word32 a4_fx[3] = { -4308, -10144, -11124 }; // q = 9
		// const UWord16 limit_index1 = 64964, limit_index2 = 47870;
		//
		// if ( sphIndex >= limit_index1 )
		// {
		// ba_crt_fx = ba_fx[2];
		// div_crt_fx = div_fx[2];
		// a4_crt_fx = a4_fx[2];
		// del_crt_fx = del_fx[2];
		// }
		// else if ( sphIndex >= limit_index2 )
		// {
		// ba_crt_fx = ba_fx[1];
		// div_crt_fx = div_fx[1];
		// a4_crt_fx = a4_fx[1];
		// del_crt_fx = del_fx[1];
		// }
		// else
		// {
		// ba_crt_fx = ba_fx[0];
		// div_crt_fx = div_fx[0];
		// a4_crt_fx = a4_fx[0];
		// del_crt_fx = del_fx[0];
		// }
		// estim = ba_crt_fx + div_crt_fx * sqrtf( del_crt + a4_crt * sphIndex );
		//
		// if ( estim > MASA_NO_CIRCLES )
		// {
		// estim = MASA_NO_CIRCLES;
		// }
		//
		// assert( estim > 0 );
		// id_th = (int16_t) roundf( estim ) - 1;
		// if ( id_th < 0 )
		// {
		// id_th = 0;
		// }
		//
		// if ( id_th == 0 )
		// {
		// base_low = 0;
		// base_up = n[0];
		// }
		// else
		// {
		// estim = MASA_ANGLE_AT_EQUATOR * (float) ( id_th - 0.5f );
		// base_low = n[0];
		// if ( id_th >= 2 )
		// {
		// if ( id_th == 2 )
		// {
		// base_low += 2 * (int16_t) ceilf( MASA_NTOT2_FAC * ( sinf( estim ) - MASA_ASIN_OFFSET ) );
		// }
		// else
		// {
		// base_low += 2 * (int16_t) roundf( MASA_NTOT2_FAC * ( sinf( estim ) - MASA_ASIN_OFFSET ) );
		// }
		// }
		// base_up = base_low + 2 * n[id_th];
		// }
		//
		// sign_theta = 1;
		//
		// n_crt = n[id_th];
		// if ( sphIndex < base_low )
		// {
		// id_th--;
		// n_crt = n[id_th];
		// if ( id_th == 0 )
		// {
		// base_low = 0;
		// base_up = n_crt;
		// }
		// else
		// {
		// base_up = base_low;
		// base_low -= 2 * n[id_th];
		// }
		// assert( sphIndex >= base_low );
		// }
		// else if ( sphIndex >= base_up )
		// {
		// id_th++;
		// n_crt = n[id_th];
		// base_low = base_up;
		// base_up += 2 * n_crt;
		// assert( sphIndex < base_up );
		// }
		//
		// id_phi = (int16_t) ( sphIndex - base_low );
		// if ( sphIndex - base_low >= n_crt )
		// {
		// id_phi -= n_crt;
		// sign_theta = -1;
		// }
		//
		// if ( id_th == 0 )
		// {
		// *theta = 0.f;
		// phi = (float) sphIndex 360 / (float) n_crt - 180;
		// }
		// else
		// {
		// if ( id_th == no_th - 1 )
		// {
		// id_phi = 0;
		// *phi = -180;
		// theta = 90 (float) sign_theta;
		// }
		// else
		// {
		// theta = id_th MASA_ANGLE_AT_EQUATOR_DEG * (float) sign_theta;
		// if ( id_th % 2 == 0 )
		// {
		// phi = (float) id_phi 360 / (float) n_crt - 180;
		// }
		// else
		// {
		// phi = ( (float) id_phi + 0.5f ) 360 / (float) n_crt - 180;
		// }
		// }
		// }
		//
		// return;
		// }
		#endif

		/*---------------------------------------------------------------
		* valid_ratio_index()

lib_com/ivas_prot.h

+83 −0

Original line number	Diff line number	Diff line
		@@ -745,6 +745,12 @@ int16_t get_igf_startline(
		float rand_triangular_signed(
		int16_t *seed );

		Word64 var_32_fx(
		const Word32 x, / i : input vector */
		const int16_t len, /* i : length of inputvector */
		Word16 q /* q : q-factor for the array */
		);

		void dtx_read_padding_bits(
		DEC_CORE_HANDLE st,
		const int16_t num_bits
		@@ -3292,6 +3298,15 @@ float companding_azimuth(
		const int16_t direction /* i : direction of companding (direct or inverse)*/
		);

		#ifdef IVAS_FLOAT_FIXED
		Word32 companding_azimuth_fx(
		const Word32 azi_fx, /* i : input azimuth value */
		const MC_LS_SETUP mc_format, /* i : input channel format */
		const Word16 theta_flag, /* i : zero/non zero elevation flag */
		const Word16 direction /* i : direction of companding (direct or inverse)*/
		);
		#endif

		/! r: index azimuth /
		int16_t quantize_phi_chan_lbr(
		const float phi, /* i : azimuth value */
		@@ -3338,6 +3353,14 @@ float deindex_elevation(
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		);

		#ifdef IVAS_FLOAT_FIXED
		Word32 deindex_elevation_fx(
		UWord16 id_th, / i : input index */
		const Word16 no_bits, /* i : number of bits for the spherical grid */
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		);
		#endif

		float deindex_azimuth(
		int16_t id_phi, /* i : index */
		const int16_t no_bits, /* i : number of bits for the spherical grid */
		@@ -3346,6 +3369,25 @@ float deindex_azimuth(
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		);

		#ifdef IVAS_FLOAT_FIXED
		Word32 deindex_azimuth_fx(
		Word16 id_phi, /* i : index */
		const Word16 no_bits, /* i : number of bits for the spherical grid */
		const Word16 id_th, /* i : elevation index */
		const Word16 remap, /* i : remapping flag */
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		);
		void deindex_spherical_component_fx(
		const UWord16 sph_idx, /* i : spherical index */
		Word32 az_fx, / o : decoded azimuth value */
		Word32 el_fx, / o : decoded elevation value */
		UWord16 az_idx, / o : azimuth index */
		UWord16 el_idx, / o : elevation index */
		const UWord16 no_bits, /* i : number of bits for the spherical grid */
		const MC_LS_SETUP mc_format /* i : channel format if in MC-mode */
		);
		#endif

		void deindex_spherical_component(
		const uint16_t sph_idx, /* i : spherical index */
		float az, / o : decoded azimuth value */
		@@ -3871,6 +3913,20 @@ int16_t matrix_product(
		float Z / o : resulting matrix after the matrix multiplication */
		);

		#ifdef IVAS_FLOAT_FIXED
		Word16 matrix_product_fx(
		const Word32 X_fx, / i : left hand matrix */
		const Word16 rowsX, /* i : number of rows of the left hand matrix */
		const Word16 colsX, /* i : number of columns of the left hand matrix */
		const Word16 transpX, /* i : flag indicating the transposition of the left hand matrix prior to the multiplication */
		const Word32 Y_fx, / i : right hand matrix */
		const Word16 rowsY, /* i : number of rows of the right hand matrix */
		const Word16 colsY, /* i : number of columns of the right hand matrix */
		const Word16 transpY, /* i : flag indicating the transposition of the right hand matrix prior to the multiplication */
		Word32 Z_fx / o : resulting matrix after the matrix multiplication */
		);
		#endif

		void mat2svdMat(
		const float mat, / i : matrix as column ordered vector */
		float svdMat[MAX_OUTPUT_CHANNELS][MAX_OUTPUT_CHANNELS], /* o : matrix as two-dimensional arry */
		@@ -4966,12 +5022,21 @@ void distribute_evenly_ism(
		const int16_t nchan_ism
		);

		#ifdef IVAS_FLOAT_FIXED
		Word16 ivas_qmetadata_DecodeExtendedGR(
		UWord16* bitstream,
		Word16* index,
		const Word16 alph_size,
		const Word16 gr_param
		);
		#else
		int16_t ivas_qmetadata_DecodeExtendedGR(
		uint16_t* bitstream,
		int16_t* index,
		const int16_t alph_size,
		const int16_t gr_param
		);
		#endif

		int16_t ivas_qmetadata_encode_extended_gr_length(
		const uint16_t value,
		@@ -5081,6 +5146,14 @@ void invdct4_transform(
		uint8_t invdct_v / o : transformed vector */
		);

		#ifdef IVAS_FLOAT_FIXED
		void invdct4_transform_fx(
		Word32 v_fx, / i : input vector */
		UWord8 invdct_v, / o : transformed vector */
		Word16 q
		);
		#endif

		void update_bits_next_block(
		IVAS_QDIRECTION q_direction, / i/o: qdirection */
		int16_t p_diff, / i/o: bits to be transferred */
		@@ -5752,6 +5825,16 @@ void ivas_omasa_decode_masa_to_total(
		const int16_t nblocks
		);

		#ifdef IVAS_FLOAT_FIXED
		void ivas_omasa_decode_masa_to_total_fx(
		UWord16 *bit_stream,
		Word16 *index,
		Word32 masa_to_total_energy_ratio_fx[MAX_PARAM_SPATIAL_SUBFRAMES][MASA_FREQUENCY_BANDS],
		const Word16 nbands,
		const Word16 nblocks,
		Word16 *q);
		#endif

		void ivas_omasa_modify_masa_energy_ratios(
		IVAS_QMETADATA_HANDLE hQMetaData, /* i/o: q_metadata handle */
		float masa_to_total_energy_ratio[MAX_PARAM_SPATIAL_SUBFRAMES][MASA_MAXIMUM_CODING_SUBBANDS]

lib_com/ivas_qmetadata_com.c

+38 −0

Original line number	Diff line number	Diff line
		@@ -486,6 +486,44 @@ void invdct4_transform(
		return;
		}

		#ifdef IVAS_FLOAT_FIXED
		void invdct4_transform_fx(
		Word32 v_fx, / i : input vector */
		UWord8 invdct_v, / o : inverse transformed vector */
		Word16 q )
		{
		Word32 a_fx, b_fx, c_fx, d_fx;
		int16_t i;
		Word32 f_invdct_v_fx[4];

		a_fx = L_add( v_fx[0], v_fx[2] );
		b_fx = L_sub( v_fx[0], v_fx[2] );
		c_fx = L_shl( L_add( Mpy_32_32( 1402911360, v_fx[1] ), Mpy_32_32( 581104896, v_fx[3] ) ), 31 - 30 );
		d_fx = L_shl( L_sub( Mpy_32_32( 581104896, v_fx[1] ), Mpy_32_32( 1402911360, v_fx[3] ) ), 31 - 30 );
		f_invdct_v_fx[0] = L_shl( L_add( a_fx, c_fx ), 7 );
		f_invdct_v_fx[1] = L_shl( L_add( b_fx, d_fx ), 7 );
		f_invdct_v_fx[2] = L_shl( L_sub( b_fx, d_fx ), 7 );
		f_invdct_v_fx[3] = L_shl( L_sub( a_fx, c_fx ), 7 );

		FOR( i = 0; i < 4; i++ )
		{
		IF( f_invdct_v_fx[i] < 0 )
		{
		invdct_v[i] = 0;
		}
		ELSE
		{
		IF( f_invdct_v_fx[i] > L_shl( 255, q ) )
		{
		f_invdct_v_fx[i] = L_shl( 255, q );
		}
		invdct_v[i] = (uint8_t) L_shr( f_invdct_v_fx[i], q );
		}
		}

		return;
		}
		#endif

		/*---------------------------------------------------------------
		* masa_compensate_two_dir_energy_ratio_index()