add code under SBA_TD_RESIDUAL (a00fc3e5) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_com/ivas_fb_mixer.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -219,7 +219,11 @@ ivas_error ivas_FB_mixer_open(
		}
		else
		{
		#ifdef SBA_TD_RESIDUAL
		num_chs_alloc = 1; /* only W channel processed for predicting YZX */
		#else
		num_chs_alloc = fb_cfg->num_out_chans;
		#endif
		}

		for ( i = 0; i < num_chs_alloc; i++ )
		@@ -382,7 +386,11 @@ void ivas_FB_mixer_close(
		}
		else
		{
		#ifdef SBA_TD_RESIDUAL
		num_chs_alloc = 1; /* only W channel processed for predicting YZX */
		#else
		num_chs_alloc = fb_cfg->num_out_chans;
		#endif
		}

		if ( hFbMixer != NULL )
		@@ -498,7 +506,11 @@ void ivas_fb_mixer_pcm_ingest(
		}
		else
		{
		#ifdef SBA_TD_RESIDUAL
		num_chs_ingest = 1; /* forward Filterbank MDFT only on W */
		#else
		num_chs_ingest = fb_cfg->num_out_chans;
		#endif
		}

		for ( i = 0; i < fb_cfg->num_in_chans; i++ )
		@@ -764,7 +776,9 @@ void ivas_fb_mixer_get_in_out_mapping(
		for ( i = 1; i < fb_cfg->num_out_chans; i++ )
		{
		in_out_mixer_map[i][0] = 1;
		#ifndef SBA_TD_RESIDUAL
		in_out_mixer_map[i][order[i]] = 1;
		#endif
		}
		}
		}

lib_com/options.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -171,7 +171,7 @@

		#define FIX_401_DIRAC_RENDERER_META_READ_INDICES /* Nokia: Issue 401: Fix metadata reading indices in DirAC renderer. */
		#define FIX_406_IVAS_POSITION /* Eri: Issue 406: Unify IVAS_POSITION to use IVAS_VECTOR3 instead */

		#define SBA_TD_RESIDUAL /* DLB : SBA ancoder complexity optimization. Avoid forward MDFTs. */
		/* ################## End DEVELOPMENT switches ######################### */
		/* clang-format on */
		#endif

lib_enc/ivas_spar_encoder.c

+56 −1

Original line number	Diff line number	Diff line
		@@ -405,7 +405,11 @@ static ivas_error ivas_spar_enc_process(
		IVAS_QMETADATA_HANDLE hQMetaData = st_ivas->hQMetaData;
		int16_t ts, l_ts, orig_dirac_bands, num_del_samples;
		float ppIn_FR_real[IVAS_SPAR_MAX_CH], ppIn_FR_imag[IVAS_SPAR_MAX_CH];
		#ifdef SBA_TD_RESIDUAL
		float wyzx_del_buf[FOA_CHANNELS][IVAS_FB_1MS_48K_SAMP];
		#else
		float w_del_buf[IVAS_FB_1MS_48K_SAMP];
		#endif
		float dir[3], avg_dir[3];
		float energySum, vecLen;

		@@ -443,7 +447,19 @@ static ivas_error ivas_spar_enc_process(

		/* store previous input samples for W in local buffer */
		assert( num_del_samples <= IVAS_FB_1MS_48K_SAMP );
		#ifdef SBA_TD_RESIDUAL
		if (hSpar->hFbMixer->fb_cfg->active_w_mixing == 0)
		{
		/* fill delay (1 ms) buffer for all Transport channels */
		for ( i = 0; i < hSpar->hFbMixer->fb_cfg->num_out_chans; i++ )
		{
		int idx = hSpar->hFbMixer->fb_cfg->remix_order[i];
		mvr2r( &hSpar->hFbMixer->ppFilterbank_prior_input[idx][hSpar->hFbMixer->fb_cfg->prior_input_length - num_del_samples], wyzx_del_buf[idx], num_del_samples );
		}
		}
		#else
		mvr2r( &hSpar->hFbMixer->ppFilterbank_prior_input[0][hSpar->hFbMixer->fb_cfg->prior_input_length - num_del_samples], w_del_buf, num_del_samples );
		#endif

		/-----------------------------------------------------------------------------------------
		* FB mixer ingest
		@@ -718,14 +734,53 @@ static ivas_error ivas_spar_enc_process(
		#ifdef DEBUG_SBA_AUDIO_DUMP
		ivas_spar_dump_signal_wav( input_frame, p_pcm_tmp, NULL, nchan_transport, spar_foa_enc_wav[1], "ivas_fb_mixer_process()" );
		#endif
		#ifdef SBA_TD_RESIDUAL
		if ( hSpar->hFbMixer->fb_cfg->active_w_mixing == 0 )
		{
		/* delayed W */
		mvr2r( wyzx_del_buf[0], p_pcm_tmp[0], num_del_samples);
		mvr2r( data_f[0], p_pcm_tmp[0] + num_del_samples, input_frame - num_del_samples);

		for ( i = 1; i < hSpar->hFbMixer->fb_cfg->num_out_chans; i++ )
		{
		int idx = hSpar->hFbMixer->fb_cfg->remix_order[i];

		/* delayed, reorderd and accumulated with (negative) prediction from W */
		v_add( wyzx_del_buf[idx], p_pcm_tmp[i], p_pcm_tmp[i], num_del_samples );
		v_add( data_f[idx], p_pcm_tmp[i] + num_del_samples, p_pcm_tmp[i] + num_del_samples, input_frame - num_del_samples);
		}
		}
		#else
		/* move delayed W into output buffer unless activeW operation*/
		if ( hSpar->hFbMixer->fb_cfg->active_w_mixing == 0 )
		{
		mvr2r( w_del_buf, p_pcm_tmp[0], num_del_samples );
		mvr2r( data_f[0], p_pcm_tmp[0] + num_del_samples, input_frame - num_del_samples );
		}

		#endif
		#if 0 /* SBA_TD_RESIDUAL */
		{
		static FILE *fid = 0;
		static int samplesWritten = 0;
		int s;
		if (!fid)
		{
		fid = fopen("enc_pcm.txt", "wt");
		}
		if (samplesWritten < 8 * 48000)
		{
		for (s = 0; s < input_frame; s++)
		{
		for (i = 0; i < hSpar->hFbMixer->fb_cfg->num_out_chans; i++)
		{
		fprintf(fid, "%.8f ", p_pcm_tmp[i][s]);
		}
		fprintf(fid, "\n");
		}
		samplesWritten += input_frame;
		}
		}
		#endif
		/-----------------------------------------------------------------------------------------
		* PCA encoder
		-----------------------------------------------------------------------------------------/