Merge with main (5c474a75) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_com/options.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -150,6 +150,7 @@
		#define AGC_ENABLE_FOR_LBR /* Issue 168: Enable AGC for low bit rate (1 TC) */
		#endif
		#define FIX_I173_I174 /* Issues 173 and 174: Remove frame and subframe index from ISm metadata and headtracking respectively. */
		#define FIX_TCX_DEC_RECONF_BFI

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

lib_dec/ivas_tcx_core_dec.c

+70 −0

Original line number	Diff line number	Diff line
		@@ -51,7 +51,14 @@
		* Local prototypes
		-------------------------------------------------------------/

		#ifdef FIX_TCX_DEC_RECONF_BFI
		static void dec_prm_tcx( Decoder_State st, int16_t param[], int16_t param_lpc[], int16_t total_nbbits, const int16_t last_element_mode, int16_t *bitsRead );
		#else
		static void dec_prm_tcx( Decoder_State st, int16_t param[], int16_t param_lpc[], int16_t total_nbbits, int16_t *bitsRead );
		#endif
		#ifdef FIX_TCX_DEC_RECONF_BFI
		static void stereo_tcx_dec_mode_switch_reconf( Decoder_State *st, const int16_t MCT_flag, const int16_t last_element_mode );
		#endif


		/-------------------------------------------------------------
		@@ -66,7 +73,9 @@ void stereo_tcx_init_dec(
		const int16_t last_element_mode /* i : element mode of previous frame */
		)
		{
		#ifndef FIX_TCX_DEC_RECONF_BFI
		int16_t frame_size_index;
		#endif
		TCX_LTP_DEC_HANDLE hTcxLtpDec = st->hTcxLtpDec;
		TCX_DEC_HANDLE hTcxDec = st->hTcxDec;

		@@ -125,9 +134,19 @@ void stereo_tcx_init_dec(
		}
		}

		#ifdef FIX_TCX_DEC_RECONF_BFI
		if ( ( st->bits_frame_nominal != st->last_bits_frame_nominal ) \|\|
		( st->bwidth != st->last_bwidth ) \|\|
		( st->last_core != TCX_20_CORE && st->last_core != TCX_10_CORE && !( st->prev_bfi == 1 && st->last_core == ACELP_CORE && st->last_con_tcx == 1 ) ) \|\|
		( st->idchan == 1 && st->element_mode == IVAS_CPE_MDCT && last_element_mode != IVAS_CPE_MDCT ) )
		#else
		if ( ( st->bits_frame_nominal != st->last_bits_frame_nominal ) \|\| ( st->bwidth != st->last_bwidth ) \|\| ( st->last_core != TCX_20_CORE && st->last_core != TCX_10_CORE && !( st->prev_bfi == 1 && st->last_core == ACELP_CORE && st->last_con_tcx == 1 ) ) \|\| ( st->idchan == 1 && st->element_mode == IVAS_CPE_MDCT && last_element_mode != IVAS_CPE_MDCT ) )
		#endif
		{
		/re-initialization/
		#ifdef FIX_TCX_DEC_RECONF_BFI
		stereo_tcx_dec_mode_switch_reconf( st, MCT_flag, last_element_mode );
		#else
		st->rate_switching_init = 1;

		/* Identify frame type - TCX Reconfiguration */
		@@ -151,6 +170,7 @@ void stereo_tcx_init_dec(

		/* Reconfigure Core */
		mode_switch_decoder_LPD( st, st->bwidth, st->bits_frame_nominal * FRAMES_PER_SEC, st->last_bits_frame_nominal * FRAMES_PER_SEC, frame_size_index, MCT_flag, last_element_mode );
		#endif
		}

		return;
		@@ -284,7 +304,11 @@ void stereo_tcx_core_dec(
		tcx_current_overlap_mode = st->hTcxCfg->tcx_curr_overlap_mode;
		#endif

		#ifdef FIX_TCX_DEC_RECONF_BFI
		dec_prm_tcx( st, param, param_lpc, &total_nbbits, last_element_mode, &bitsRead );
		#else
		dec_prm_tcx( st, param, param_lpc, &total_nbbits, &bitsRead );
		#endif

		#ifdef FIX_IVAS_337 /IVAS-337 consider BER /
		if ( !st->rate_switching_init && st->BER_detect )
		@@ -808,6 +832,9 @@ static void dec_prm_tcx(
		int16_t param[], /* o : decoded parameters */
		int16_t param_lpc[], /* o : LPC parameters */
		int16_t total_nbbits, / i/o: number of bits / decoded bits */
		#ifdef FIX_TCX_DEC_RECONF_BFI
		const int16_t last_element_mode,
		#endif
		int16_t bitsRead / o : number of read bits */
		)
		{
		@@ -861,6 +888,14 @@ static void dec_prm_tcx(
		st->prev_bfi = 1;
		}

		#ifdef FIX_TCX_DEC_RECONF_BFI
		/* possible need for reconfiguration can only be decided correctly once last_core_from_bs has been decoded */
		if ( ( st->last_core != st->last_core_from_bs ) && ( st->last_core_from_bs != TCX_20_CORE && st->last_core_from_bs != TCX_10_CORE && !( st->prev_bfi == 1 && st->last_core_from_bs == ACELP_CORE && st->last_con_tcx == 1 ) ) )
		{
		stereo_tcx_dec_mode_switch_reconf( st, 0, last_element_mode );
		}
		#endif

		st->last_core = st->last_core_from_bs;

		/for TCX 10 force last_core to be TCX since ACELP as previous core is forbidden/
		@@ -923,3 +958,38 @@ static void dec_prm_tcx(

		return;
		}

		#ifdef FIX_TCX_DEC_RECONF_BFI
		static void stereo_tcx_dec_mode_switch_reconf(
		Decoder_State *st,
		const int16_t MCT_flag,
		const int16_t last_element_mode
		)
		{
		int16_t frame_size_index;

		st->rate_switching_init = 1;

		/* Identify frame type - TCX Reconfiguration */
		for ( frame_size_index = 0; frame_size_index < FRAME_SIZE_NB; frame_size_index++ )
		{
		if ( frame_size_index < FRAME_SIZE_NB - 1 )
		{
		if ( ( FrameSizeConfig[frame_size_index].frame_bits <= st->bits_frame_nominal ) && ( FrameSizeConfig[frame_size_index + 1].frame_bits > st->bits_frame_nominal ) )
		{
		break;
		}
		}
		else
		{
		if ( FrameSizeConfig[frame_size_index].frame_bits <= st->bits_frame_nominal )
		{
		break;
		}
		}
		}

		/* Reconfigure Core */
		mode_switch_decoder_LPD( st, st->bwidth, st->bits_frame_nominal * FRAMES_PER_SEC, st->last_bits_frame_nominal * FRAMES_PER_SEC, frame_size_index, MCT_flag, last_element_mode );
		}
		#endif