Merge branch '91-sba-improvements-at-high-bitrates-with-hoa-input' into 'main' (34c6b03f) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_com/ivas_prot.h

+20 −0

Original line number	Diff line number	Diff line
		@@ -3028,6 +3028,10 @@ void ivas_dirac_param_est_enc(
		float **pp_fr_real,
		float **pp_fr_imag,
		const int16_t input_frame
		#ifdef SBA_HOA_HBR_IMPROV
		,
		const SBA_MODE sba_mode
		#endif
		);

		/----------------------------------------------------------------------------------
		@@ -3087,6 +3091,14 @@ int16_t ivas_sba_get_nchan_metadata(
		const int16_t sba_order /* i : Ambisonic (SBA) order */
		);

		#ifdef SBA_HOA_HBR_IMPROV
		/! r: get the flag to code SPAR HOA MD for all band /
		int16_t ivas_sba_get_spar_hoa_md_flag(
		const int16_t sba_order, /* i : Ambisonic (SBA) order */
		const int32_t ivas_total_brate /* i : IVAS total bitrate */
		);
		#endif

		void ivas_sba_zero_vert_comp(
		float sba_data[][L_FRAME48k], /* i/o: SBA data frame */
		const int16_t sba_order, /* i : Ambisonic (SBA) order */
		@@ -3974,6 +3986,10 @@ ivas_error ivas_spar_md_dec_open(
		ivas_spar_md_dec_state_t *hMdDec_out, / i/o: SPAR MD decoder handle */
		const DECODER_CONFIG_HANDLE hDecoderConfig, /* i : configuration structure */
		const int16_t num_channels /* i : number of internal channels */
		#ifdef SBA_HOA_HBR_IMPROV
		,
		const int16_t sba_order /* i : flag to send HOA MD for all bands */
		#endif
		);

		void ivas_spar_md_dec_close(
		@@ -4821,6 +4837,10 @@ void computeReferencePower_enc(
		float reference_power, / o : Estimated power */
		const int16_t enc_param_start_band, /* i : first band to process */
		const int16_t num_freq_bands /* i : Number of frequency bands */
		#ifdef SBA_HOA_HBR_IMPROV
		,
		const SBA_MODE sba_mode /* i : SBA mode */
		#endif
		);

lib_com/ivas_sba_config.c

+25 −0

Original line number	Diff line number	Diff line
		@@ -281,6 +281,31 @@ int16_t ivas_sba_get_nchan_metadata(
		return ( nb_channels );
		}

		#ifdef SBA_HOA_HBR_IMPROV
		/-------------------------------------------------------------------
		* ivas_sba_get_spar_hoa_md_flag()
		*
		* et the flag to code SPAR HOA MD for all band
		-------------------------------------------------------------------/

		/! r: get the flag to code SPAR HOA MD for all band /
		int16_t ivas_sba_get_spar_hoa_md_flag(
		const int16_t sba_order, /* i : Ambisonic (SBA) order */
		const int32_t ivas_total_brate /* i : IVAS total bitrate */
		)
		{
		int16_t spar_hoa_md_flag = 0;
		if ( sba_order > 1 && ivas_total_brate >= IVAS_256k )
		{
		spar_hoa_md_flag = 1;
		}
		else
		{
		spar_hoa_md_flag = 0;
		}
		return spar_hoa_md_flag;
		}
		#endif

		/-------------------------------------------------------------------
		* ivas_sba_zero_vert_comp()

lib_com/ivas_spar_com.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1737,10 +1737,11 @@ void ivas_get_spar_md_from_dirac(

		/SPAR from DirAC/
		set_f( response_avg, 0.0f, MAX_OUTPUT_CHANNELS );
		#ifndef SBA_HOA_HBR_IMPROV
		set_f( hSpar_md->band_coeffs[band + i_ts * IVAS_MAX_NUM_BANDS].pred_re, 0.0f, IVAS_SPAR_MAX_CH - 1 );
		set_f( &hSpar_md->band_coeffs[band + i_ts * IVAS_MAX_NUM_BANDS].C_re[0][0], 0.0f, ( IVAS_SPAR_MAX_CH - IVAS_SPAR_MAX_DMX_CHS ) * ( IVAS_SPAR_MAX_DMX_CHS - 1 ) );
		set_f( &hSpar_md->band_coeffs[band + i_ts * IVAS_MAX_NUM_BANDS].P_re[0], 0.0f, ( IVAS_SPAR_MAX_CH - 1 ) );

		#endif
		if ( n_ts > 1 )
		{
		ivas_dirac_dec_get_response( (int16_t) azi_dirac[band][i_ts], (int16_t) ele_dirac[band][i_ts], response_avg, order );

lib_com/options.h

100755 → 100644

+1 −1

Original line number	Diff line number	Diff line
		@@ -151,7 +151,7 @@
		#define SBA_SPAR_HARM /* Issue 92: maintenance of the SBA SPAR functions */
		#define FIX_155_HP20_ISSUE /* Issue 155: apply hp20 on all input channels instead of just 2 channels */
		#define EFAP_FIX_POLY /* Issue 167: fix bug in EFAP polygon selection */

		#define SBA_HOA_HBR_IMPROV /* issue 91: Improvements to SBA high bitrate HOA3 coding */


		/* ################## End DEVELOPMENT switches ######################### */

lib_dec/ivas_spar_decoder.c

+21 −2

Original line number	Diff line number	Diff line
		@@ -89,7 +89,12 @@ ivas_error ivas_spar_dec_open(
		}

		/* MD handle */
		if ( ( error = ivas_spar_md_dec_open( &hSpar->hMdDec, st_ivas->hDecoderConfig, num_channels_internal ) ) != IVAS_ERR_OK )
		if ( ( error = ivas_spar_md_dec_open( &hSpar->hMdDec, st_ivas->hDecoderConfig, num_channels_internal
		#ifdef SBA_HOA_HBR_IMPROV
		,
		sba_order_internal
		#endif
		) ) != IVAS_ERR_OK )
		{
		return error;
		}
		@@ -645,7 +650,16 @@ static void ivas_spar_dec_MD(
		{
		ivas_parse_spar_header( hDecoderConfig->ivas_total_brate, sba_order, st0, &table_idx );

		#ifdef SBA_HOA_HBR_IMPROV
		if ( hSpar->hMdDec->spar_hoa_md_flag )
		{
		hSpar->hMdDec->spar_md.num_bands = IVAS_MAX_NUM_BANDS;
		}
		else
		#endif
		{
		hSpar->hMdDec->spar_md.num_bands = min( SPAR_DIRAC_SPLIT_START_BAND, IVAS_MAX_NUM_BANDS );
		}

		if ( hSpar->hMdDec->table_idx != table_idx )
		{
		@@ -788,7 +802,12 @@ void ivas_spar_get_parameters(

		weight = ivas_spar_get_cldfb_slot_gain( hSpar, hDecoderConfig, ts, &ts0, &ts1, &weight_20ms );

		#ifdef SBA_HOA_HBR_IMPROV
		split_band = hSpar->hMdDec->spar_md.num_bands;
		#else
		split_band = SPAR_DIRAC_SPLIT_START_BAND;
		#endif

		for ( spar_band = 0; spar_band < num_spar_bands; spar_band++ )
		{
		for ( out_ch = 0; out_ch < num_ch_out; out_ch++ )

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