Merge branch 'main' of https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec (0cd7a9f2) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_com/ivas_cnst.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -469,6 +469,11 @@ enum
		#define STEREO_DFT_OFFSET 1
		#define STEREO_DFT_NBDIV 2

		#ifdef FIX_ITD_CNG
		#define STEREO_DFT_ITD_CNG_XFADE 100
		#define STEREO_DFT_ITD_CNG_XFADE_RESET 2
		#endif

		#define STEREO_DFT_DELAY_DEC_BWE_NS ( STEREO_DFT_OFFSET * STEREO_DFT_HOP_NS - ACELP_LOOK_NS ) /* 1.25ms/2.5ms: max delay for core decoder*/

		#define STEREO_DFT_ENC_DFT_NB ( STEREO_DFT_OFFSET + 1 ) /frame + lookahead/
		@@ -534,6 +539,10 @@ typedef enum
		#define STEREO_DFT_SID_GIPD_NBITS 2
		#define STEREO_DFT_FD_FILT 0.9f

		#ifdef FIX_ITD_CNG
		#define STEREO_DFT_CNG_ITD_CNT 8
		#endif

		/Residual prediction/
		#define STEREO_DFT_PAST_MAX 4
		#define STEREO_DFT_RES_PRED_BAND_MAX 12

lib_com/ivas_prot.h

+25 −0

Original line number	Diff line number	Diff line
		@@ -925,6 +925,10 @@ float stereo_dft_enc_synthesize(

		void stereo_dft_enc_process(
		CPE_ENC_HANDLE hCPE, /* i : CPE encoder structure */
		#ifdef FIX_ITD_CNG
		const int16_t vad_flag_dtx[], /* i: VAD dtx flags */
		const int16_t vad_hover_flag[], /* i: VAD hangover flags */
		#endif
		const int16_t input_frame /* i : input frame length */
		);

		@@ -973,7 +977,11 @@ void stereo_dft_dequantize_itd(

		void stereo_dft_enc_sid_calc_coh(
		STEREO_DFT_ENC_DATA_HANDLE hStereoDft, /* i/o: DFT stereo handle */
		#ifdef FIX_ITD_CNG
		float prev_cohBand[2(STEREO_DFT_BAND_MAX/2)], / i/o: Previous coherence */
		#else
		float coh_crossfade[STEREO_DFT_BAND_MAX / 2], /* i/o: Coherence crossfade memory */
		#endif
		int16_t td_active, / i/o: TD stereo mode indicator */
		int16_t first_SID, / i/o: First SID indicator */
		float cohBand / i/o: Coherence per band */
		@@ -1126,6 +1134,11 @@ void stereo_dft_dec_read_BS(
		void stereo_dft_dec_smooth_parameters(
		STEREO_DFT_DEC_DATA_HANDLE hStereoDft, /* i/o: decoder DFT stereo handle */
		const int16_t prev_sid_nodata /* i : Previous SID/No data indicator */
		#ifdef FIX_ITD_CNG
		,
		const int16_t active_frame_counter, /* i : Active frame counter */
		const int32_t element_brate /* i : Element bitrate */
		#endif
		);

		void stereo_dft_generate_res_pred(
		@@ -1281,6 +1294,10 @@ void stereo_dft_enc_compute_itd(
		float *DFT_R,
		const int16_t k_offset,
		const int16_t input_frame,
		#ifdef FIX_ITD_CNG
		const int16_t vad_flag_dtx[],
		const int16_t vad_hover_flag[],
		#endif
		float *bin_nrgL,
		float *bin_nrgR
		);
		@@ -1836,6 +1853,10 @@ void deindex_lvq_SHB(

		void stereo_td_itd_mdct_stereo(
		CPE_ENC_HANDLE hCPE, /* i/o: CPE encoder handle */
		#ifdef FIX_ITD_CNG
		const int16_t vad_flag_dtx[], /* i: VAD dtx flags */
		const int16_t vad_hover_flag[], /* i: VAD hangover flags */
		#endif
		const int16_t input_frame /* i : frame length */
		);

		@@ -2395,6 +2416,10 @@ void stereo_cng_upd_counters(
		const int16_t nbands, /* i : Number of bands in active */
		const float sidSideGain[], /* i : SID side gains */
		const int16_t burst_ho_count /* i : Hang-over count */
		#ifdef FIX_ITD_CNG
		,
		int16_t coh_fade_counter / i : Coherence fade counter */
		#endif
		);

		void stereo_cng_init_dec(

lib_com/options.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -179,6 +179,8 @@
		#define FIX_ISM_INACTIVE_BITS /* fix bitbudget distribution in inactive frames in ISM format */


		#define FIX_ITD_CNG /* Eri: Fix for CNG ITD */

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

lib_com/prot.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -3837,6 +3837,10 @@ int16_t dtx_hangover_addition(
		int16_t vad_hover_flag, / o : VAD hangover flag */
		VAD_HANDLE hVAD, /* i/o: VAD handle for L or R channel */
		NOISE_EST_HANDLE hNoiseEst /* i : Noise estimation handle */
		#ifdef FIX_ITD_CNG
		,
		int16_t rem_dtx_ho / o : Expected remaining hangover frames */
		#endif
		);

		int16_t wb_vad(

lib_dec/ivas_stat_dec.h

+12 −0

Original line number	Diff line number	Diff line
		@@ -147,6 +147,18 @@ typedef struct stereo_dft_dec_data_struct

		float itd[STEREO_DFT_DEC_DFT_NB];

		#ifdef FIX_ITD_CNG
		float itd_xfade_step;
		float itd_xfade_target;
		int16_t itd_xfade_counter;
		float itd_xfade_prev;
		int32_t last_active_element_brate;
		float ipd_xfade_target;
		float ipd_xfade_step;
		int16_t ipd_xfade_counter;
		float ipd_xfade_prev;
		#endif

		/residual prediction/
		int16_t res_pred_mode[STEREO_DFT_DEC_DFT_NB]; /* residual prediction mode: 0(off), 1(stereo filling only), 2(enhanced stereo filling) */
		float res_pred_gain[STEREO_DFT_DEC_DFT_NB * STEREO_DFT_BAND_MAX]; /* prediction gain for the residual HFs */