Merge branch '365-improved-sba-to-mono-output' into 'main' (ee9c4a2f) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_com/ivas_prot.h

100644 → 100755

+9 −0

Original line number	Diff line number	Diff line
		@@ -1205,6 +1205,9 @@ void stereo_dft_dec(
		float input_mem, / i/o: mem of buffer DFT analysis */
		STEREO_CNG_DEC_HANDLE hStereoCng, /* i/o: Stereo CNG data structure */
		const int16_t sba_dirac_stereo_flag, /* i : signal stereo output for SBA DirAC */
		#ifdef SBA2MONO
		const int16_t sba_mono_flag, /* i : signal mono output for SBA DirAC */
		#endif
		ivas_spar_md_dec_state_t hMdDec, / i/o: SPAR MD handle for upmixing */
		const int16_t cross_fade_start_offset, /* i : SPAR mixer delay compensation */
		const int32_t output_Fs, /* i : Fs for delay calculation */
		@@ -3301,6 +3304,12 @@ void ivas_sba_dirac_stereo_config(
		STEREO_DFT_CONFIG_DATA_HANDLE hConfig /* o : DFT stereo configuration */
		);

		#ifdef SBA2MONO
		int16_t ivas_get_sba_dirac_stereo_flag(
		Decoder_Struct st_ivas / i/o: IVAS decoder structure */
		);
		#endif

		void ivas_sba_dirac_stereo_smooth_parameters(
		STEREO_DFT_DEC_DATA_HANDLE hStereoDft, /* i/o: encoder DFT stereo handle */
		ivas_spar_md_dec_state_t hMdDec, / i/o: SPAR MD handle for upmixing */

lib_com/options.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -151,6 +151,8 @@

		#define FIX_382_MASA_META_FRAMING_ASYNC /* Nokia: Issue 382: detect potential MASA metadata framing offset */

		#define SBA2MONO /* FhG: Issue 365: Adapt processing of SBA mono output to be in line with stereo output (less delay, lower complexity) */

		/* ################## End DEVELOPMENT switches ######################### */
		/* clang-format on */
		#endif

lib_dec/ivas_corecoder_dec_reconfig.c

+52 −0

Original line number	Diff line number	Diff line
		@@ -87,8 +87,13 @@ ivas_error ivas_corecoder_dec_reconfig(
		-----------------------------------------------------------------/

		/* remove dummy CPE element for DFT stereo-like upmix */
		#ifdef SBA2MONO
		if ( ( st_ivas->ivas_format == SBA_FORMAT && sba_dirac_stereo_flag_old && nchan_transport_old == 1 && ( !st_ivas->sba_dirac_stereo_flag \|\| st_ivas->nchan_transport > 1 ) ) \|\|
		( st_ivas->ivas_format == MC_FORMAT && last_mc_mode == MC_MODE_MCMASA && sba_dirac_stereo_flag_old && nchan_transport_old == 1 && ( !st_ivas->sba_dirac_stereo_flag \|\| st_ivas->nchan_transport > 1 ) ) )
		#else
		if ( ( st_ivas->ivas_format == SBA_FORMAT && sba_dirac_stereo_flag_old && !st_ivas->sba_dirac_stereo_flag ) \|\|
		( st_ivas->ivas_format == MC_FORMAT && last_mc_mode == MC_MODE_MCMASA && sba_dirac_stereo_flag_old && !st_ivas->sba_dirac_stereo_flag ) )
		#endif
		{
		st_ivas->hCPE[0]->hCoreCoder[0] = NULL;
		st_ivas->hCPE[0]->hCoreCoder[1] = NULL;
		@@ -146,6 +151,23 @@ ivas_error ivas_corecoder_dec_reconfig(

		for ( cpe_id = st_ivas->nCPE; cpe_id < nCPE_old; cpe_id++ )
		{
		#ifdef SBA2MONO
		/* don't deallocate first CPE in case of mono/stereo output of 1 TC SBA, only deallocate core coder */
		if ( cpe_id == 0 && st_ivas->sba_dirac_stereo_flag && sba_dirac_stereo_flag_old )
		{
		for ( n = 0; n < CPE_CHANNELS; n++ )
		{
		if ( st_ivas->hCPE[cpe_id]->hCoreCoder[n] != NULL )
		{
		destroy_core_dec( st_ivas->hCPE[cpe_id]->hCoreCoder[n] );

		free( st_ivas->hCPE[cpe_id]->hCoreCoder[n] );
		st_ivas->hCPE[cpe_id]->hCoreCoder[n] = NULL;
		}
		}
		continue;
		}
		#endif
		destroy_cpe_dec( st_ivas->hCPE[cpe_id] );
		st_ivas->hCPE[cpe_id] = NULL;
		}
		@@ -185,6 +207,13 @@ ivas_error ivas_corecoder_dec_reconfig(
		return error;
		}
		}
		#ifdef SBA2MONO
		if ( st_ivas->sba_dirac_stereo_flag && sba_dirac_stereo_flag_old && st_ivas->nchan_transport == 1 && nSCE_old == 0 )
		{
		st_ivas->hCPE[0]->hCoreCoder[0] = st_ivas->hSCE[0]->hCoreCoder[0]; /* don't allocate unnecessary core coder, simply point to core coder of SCE element */
		st_ivas->hCPE[0]->hCoreCoder[1] = NULL;
		}
		#endif

		for ( cpe_id = 0; cpe_id < nCPE_existing; cpe_id++ )
		{
		@@ -264,10 +293,29 @@ ivas_error ivas_corecoder_dec_reconfig(
		if ( ( st_ivas->ivas_format == SBA_FORMAT && st_ivas->sba_dirac_stereo_flag && !sba_dirac_stereo_flag_old ) \|\|
		( st_ivas->ivas_format == MC_FORMAT && st_ivas->mc_mode == MC_MODE_MCMASA && st_ivas->sba_dirac_stereo_flag && !sba_dirac_stereo_flag_old ) )
		{
		#ifdef SBA2MONO
		/* if at least one CPE is already available, only allocate DFT Stereo struct */
		if ( st_ivas->nCPE > 0 )
		{
		if ( ( error = stereo_dft_dec_create( &( st_ivas->hCPE[0]->hStereoDft ), st_ivas->hCPE[0]->element_brate, st_ivas->hDecoderConfig->output_Fs, st_ivas->sba_dirac_stereo_flag, st_ivas->nchan_transport ) ) != IVAS_ERR_OK )
		{
		return error;
		}
		}
		/* otherwise create extra dummy CPE */
		else
		{
		if ( ( error = create_cpe_dec( st_ivas, 0, ivas_total_brate / ( st_ivas->nSCE + st_ivas->nCPE ) ) ) != IVAS_ERR_OK )
		{
		return error;
		}
		}
		#else
		if ( ( error = create_cpe_dec( st_ivas, 0, ivas_total_brate / ( st_ivas->nSCE + st_ivas->nCPE ) ) ) != IVAS_ERR_OK )
		{
		return error;
		}
		#endif

		set_f( st_ivas->hCPE[0]->hStereoDft->buff_LBTCX_mem, 0, NS2SA( 16000, STEREO_DFT32MS_OVL_NS ) );

		@@ -508,7 +556,11 @@ ivas_error ivas_cldfb_dec_reconfig(
		}

		/* CLDFB Interpolation weights */
		#ifdef SBA2MONO
		if ( st_ivas->sba_mode == SBA_MODE_SPAR && ( numCldfbAnalyses_old != numCldfbAnalyses \|\| numCldfbSyntheses_old != numCldfbSyntheses \|\| nchan_transport_old != st_ivas->nchan_transport ) && numCldfbAnalyses != 0 && numCldfbSyntheses != 0 )
		#else
		if ( st_ivas->sba_mode == SBA_MODE_SPAR && ( numCldfbAnalyses_old != numCldfbAnalyses \|\| numCldfbSyntheses_old != numCldfbSyntheses \|\| nchan_transport_old != st_ivas->nchan_transport ) )
		#endif
		{
		ivas_spar_get_cldfb_gains( st_ivas->hSpar, st_ivas->cldfbAnaDec[0], st_ivas->cldfbSynDec[0], hDecoderConfig );
		}

lib_dec/ivas_cpe_dec.c

100644 → 100755

+4 −0

Original line number	Diff line number	Diff line
		@@ -405,7 +405,11 @@ ivas_error ivas_cpe_dec(
		}
		else
		{
		#ifdef SBA2MONO
		stereo_dft_dec( hCPE->hStereoDft, sts[0], DFT, hCPE->input_mem[1], hCPE->hStereoCng, 0, 0, 0, 0, 0, 0 );
		#else
		stereo_dft_dec( hCPE->hStereoDft, sts[0], DFT, hCPE->input_mem[1], hCPE->hStereoCng, 0, 0, 0, 0, 0 );
		#endif
		}

		/* synthesis iFFT */

lib_dec/ivas_dec.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -339,10 +339,23 @@ ivas_error ivas_dec(
		nchan_remapped = st_ivas->nchan_transport;
		if ( st_ivas->sba_dirac_stereo_flag )
		{
		#ifdef SBA2MONO
		nchan_remapped = nchan_out;
		#else
		nchan_remapped = CPE_CHANNELS;
		#endif

		if ( st_ivas->sba_mode == SBA_MODE_SPAR )
		{
		#ifdef SBA2MONO
		ivas_agc_dec_process( st_ivas->hSpar->hAgcDec, output, output, st_ivas->hSpar->hMdDec->spar_md_cfg.nchan_transport, output_frame );

		if ( st_ivas->hSpar->hPCA != NULL )
		{
		ivas_pca_dec( st_ivas->hSpar->hPCA, output_frame, st_ivas->hSpar->hMdDec->spar_md_cfg.nchan_transport, st_ivas->hDecoderConfig->ivas_total_brate, st_ivas->hDecoderConfig->last_ivas_total_brate, st_ivas->bfi, output );
		}

		#endif
		ivas_spar_dec_gen_umx_mat( st_ivas->hSpar->hMdDec, st_ivas->nchan_transport, IVAS_MAX_NUM_BANDS, st_ivas->bfi );
		}

		@@ -416,7 +429,11 @@ ivas_error ivas_dec(
		ivas_dirac_dec( st_ivas, output, nchan_remapped, NULL, NULL, -1 );
		}
		}
		#ifdef SBA2MONO
		else if ( !st_ivas->sba_dirac_stereo_flag && nchan_out != 1 )
		#else
		else if ( !st_ivas->sba_dirac_stereo_flag )
		#endif
		{
		ivas_sba_upmixer_renderer( st_ivas, output, output_frame ); /* Note: ivas_sba_linear_renderer() or ivas_dirac_dec() are called internally */
		}