implement decoder-side part of mono-detection heuristic (bed1365a) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_dec/ivas_spar_md_dec.c

+41 −0

Original line number	Diff line number	Diff line
		@@ -678,6 +678,47 @@ void ivas_spar_md_dec_process(
		ivas_spar_br_table_consts[hMdDec->table_idx].usePlanarCoeff, st_ivas->hQMetaData->sba_inactive_mode,
		st_ivas->last_active_ivas_total_brate );

		#ifdef FIX_527_MONO_HEURISTICS
		{
		int16_t ndm, ndec,i,j;

		st_ivas->hQMetaData->dirac_mono_flag = 1;
		for ( b = 0; b < SPAR_DIRAC_SPLIT_START_BAND; b++ )
		{
		ndm = hMdDec->spar_md_cfg.num_dmx_chans_per_band[b * bw];
		ndec = hMdDec->spar_md_cfg.num_decorr_per_band[b * bw];

		for ( i = 0; i < DIRAC_TO_SPAR_HBR_PRED_CHS; i++ )
		{
		if ( hMdDec->spar_md.band_coeffs[b].pred_quant_re[i] != 0.0f )
		{
		st_ivas->hQMetaData->dirac_mono_flag = 0;
		}
		}

		for ( i = 0; i < num_md_chs - ndm; i++ )
		{
		for ( j = 0; j < ndm - 1; j++ )
		{
		if ( hMdDec->spar_md.band_coeffs[0].C_quant_re[i][j] != 0.f )
		{
		st_ivas->hQMetaData->dirac_mono_flag = 0;
		}
		}
		}

		for ( i = ndm; i < num_md_chs; i++ )
		{
		if ( hMdDec->spar_md.band_coeffs[0].P_re[i] != 0.f )
		{
		st_ivas->hQMetaData->dirac_mono_flag = 0;
		}
		}
		}
		}
		#endif


		#if 0
		{
		char f_name[100];