ivas_omasa_com functions converted to fixed point. (740ab8e3) · Commits · SA4 / Audio / IVAS BASOP

lib_com/ivas_omasa_com.c

+676 −5

Original line number	Diff line number	Diff line
		@@ -35,7 +35,9 @@
		#include "ivas_cnst.h"
		#include "ivas_prot.h"
		#include "prot.h"
		#include "prot_fx1.h"
		#include "ivas_rom_com.h"
		#include "rom_com.h"
		#include <math.h>

		/*---------------------------------------------------------------
		@@ -58,6 +60,23 @@
		#define GAMMA_ISM_MEDIUM_IMP4 1.0f
		#define GAMMA_ISM_HIGH_IMP4 1.2f

		#ifdef IVAS_FLOAT_FIXED
		#define GAMMA_ISM_LOW_IMP_FX 26215 /0.8f in Q15/
		#define GAMMA_ISM_MEDIUM_IMP_FX 39322 /1.2f in Q15/
		#define GAMMA_ISM_HIGH_IMP_FX 45876 /1.4f in Q15/

		#define GAMMA_ISM_LOW_IMP2_FX 29492 /0.9f in Q15/
		#define GAMMA_ISM_MEDIUM_IMP2_FX 39322 /1.2f in Q15/
		#define GAMMA_ISM_HIGH_IMP2_FX 44237 /1.35f in Q15/

		#define GAMMA_ISM_LOW_IMP3_FX 27853 /0.85f in Q15/
		#define GAMMA_ISM_MEDIUM_IMP3_FX 37684 /1.15f in Q15/
		#define GAMMA_ISM_HIGH_IMP3_FX 42599 /1.3f in Q15/

		#define GAMMA_ISM_LOW_IMP4_FX 26215 /0.8f in Q15/
		#define GAMMA_ISM_MEDIUM_IMP4_FX 32768 /1.0f in Q15/
		#define GAMMA_ISM_HIGH_IMP4_FX 39322 /1.2f in Q15/
		#endif

		/*---------------------------------------------------------------
		* ivas_omasa_ism_mode_select()
		@@ -67,6 +86,94 @@
		* ---------------------------------------------------------------*/

		/! r : ISM format mode /
		#ifdef IVAS_FLOAT_FIXED
		ISM_MODE ivas_omasa_ism_mode_select(
		const Word32 ivas_total_brate, /* i : IVAS total bitrate */
		const Word16 nchan_ism /* i : number of input ISM's */
		)
		{
		ISM_MODE ism_mode = ISM_MODE_NONE;
		move16();

		SWITCH( nchan_ism )
		{
		case 1:
		IF( GE_32( ivas_total_brate, IVAS_24k4 ) )
		{
		ism_mode = ISM_MASA_MODE_DISC;
		move16();
		}
		ELSE
		{
		ism_mode = ISM_MODE_NONE;
		move16();
		}
		BREAK;
		case 2:
		IF( GE_32( ivas_total_brate, IVAS_48k ) )
		{
		ism_mode = ISM_MASA_MODE_DISC;
		move16();
		}
		ELSE IF( GE_32( ivas_total_brate, IVAS_32k ) )
		{
		ism_mode = ISM_MASA_MODE_PARAM_ONE_OBJ;
		move16();
		}
		ELSE
		{
		ism_mode = ISM_MODE_NONE;
		move16();
		}
		BREAK;
		case 3:
		IF( GE_32( ivas_total_brate, IVAS_96k ) )
		{
		ism_mode = ISM_MASA_MODE_DISC;
		move16();
		}
		ELSE IF( GE_32( ivas_total_brate, IVAS_64k ) )
		{
		ism_mode = ISM_MASA_MODE_PARAM_ONE_OBJ;
		move16();
		}
		ELSE IF( GE_32( ivas_total_brate, IVAS_32k ) )
		{
		ism_mode = ISM_MASA_MODE_MASA_ONE_OBJ;
		move16();
		}
		ELSE
		{
		ism_mode = ISM_MODE_NONE;
		move16();
		}
		BREAK;
		case 4:
		IF( GE_32( ivas_total_brate, IVAS_128k ) )
		{
		ism_mode = ISM_MASA_MODE_DISC;
		move16();
		}
		ELSE IF( GE_32( ivas_total_brate, IVAS_64k ) )
		{
		ism_mode = ISM_MASA_MODE_PARAM_ONE_OBJ;
		move16();
		}
		ELSE IF( GE_32( ivas_total_brate, IVAS_32k ) )
		{
		ism_mode = ISM_MASA_MODE_MASA_ONE_OBJ;
		move16();
		}
		ELSE
		{
		ism_mode = ISM_MODE_NONE;
		}
		BREAK;
		}

		return ism_mode;
		}
		#else
		ISM_MODE ivas_omasa_ism_mode_select(
		const int32_t ivas_total_brate, /* i : IVAS total bitrate */
		const int16_t nchan_ism /* i : number of input ISM's */
		@@ -140,7 +247,7 @@ ISM_MODE ivas_omasa_ism_mode_select(

		return ism_mode;
		}

		#endif

		/*---------------------------------------------------------------
		* ivas_set_omasa_TC()
		@@ -148,6 +255,42 @@ ISM_MODE ivas_omasa_ism_mode_select(
		* set number of transport channels in OMASA format
		* ---------------------------------------------------------------*/

		#ifdef IVAS_FLOAT_FIXED
		void ivas_set_omasa_TC(
		const ISM_MODE ism_mode, /* i : ISM mode */
		const Word16 nchan_ism, /* i : number of input ISMs */
		Word16 nSCE, / o : number of SCEs */
		Word16 nCPE / o : number of CPEs */
		)
		{
		SWITCH( ism_mode )
		{
		case ISM_MASA_MODE_MASA_ONE_OBJ:
		case ISM_MASA_MODE_PARAM_ONE_OBJ:
		*nCPE = 1;
		move16();
		*nSCE = 1;
		move16();
		BREAK;
		case ISM_MASA_MODE_DISC:
		*nCPE = 1;
		move16();
		*nSCE = nchan_ism;
		move16();
		BREAK;
		case ISM_MODE_NONE:
		*nCPE = 1;
		move16();
		*nSCE = 0;
		move16();
		BREAK;
		default:
		BREAK;
		}

		return;
		}
		#else
		void ivas_set_omasa_TC(
		const ISM_MODE ism_mode, /* i : ISM mode */
		const int16_t nchan_ism, /* i : number of input ISMs */
		@@ -176,7 +319,7 @@ void ivas_set_omasa_TC(

		return;
		}

		#endif

		/*---------------------------------------------------------------
		* ivas_interformat_brate()
		@@ -185,6 +328,149 @@ void ivas_set_omasa_TC(
		* ---------------------------------------------------------------*/

		/! r: adjusted bitrate /
		#ifdef IVAS_FLOAT_FIXED
		Word32 ivas_interformat_brate(
		const ISM_MODE ism_mode, /* i : ISM mode */
		const Word16 nchan_ism, /* i : number of ISM channels */
		const Word32 element_brate, /* i : element bitrate */
		const Word16 ism_imp, /* i : ISM importance flag */
		const Word16 limit_flag /* i : flag to limit the bitrate increase */
		)
		{
		Word32 element_brate_out;
		Word16 nBits, limit_low, limit_high;

		nBits = extract_l( div_l( element_brate, shr( FRAMES_PER_SEC, 1 ) ) );

		IF( EQ_16( ism_imp, ISM_INACTIVE_IMP ) )
		{
		nBits = BITS_ISM_INACTIVE;
		move16();
		}
		ELSE
		{
		IF( EQ_16( (Word16) ism_mode, (Word16) ISM_MASA_MODE_DISC ) && ( ( EQ_16( nchan_ism, 4 ) && EQ_32( element_brate, 24000 ) ) \|\| ( EQ_16( nchan_ism, 3 ) && LE_32( element_brate, 24000 ) ) \|\| ( EQ_16( nchan_ism, 2 ) && LE_32( element_brate, 11000 ) ) ) ) /* for border case in DISC mode */
		{
		IF( EQ_16( limit_flag, 1 ) && ( ( EQ_16( nchan_ism, 4 ) && EQ_32( element_brate, 24000 ) ) \|\| ( EQ_16( nchan_ism, 3 ) && EQ_32( element_brate, 20000 ) ) \|\| ( EQ_16( nchan_ism, 2 ) && LE_32( element_brate, 11000 ) ) ) )
		{
		return element_brate;
		}

		IF( EQ_16( ism_imp, ISM_LOW_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_LOW_IMP4_FX, nBits ) );
		}
		ELSE IF( EQ_16( ism_imp, ISM_MEDIUM_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_MEDIUM_IMP4_FX, nBits ) );
		IF( EQ_16( limit_flag, -1 ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_HIGH_IMP4_FX, nBits ) );
		}
		}
		ELSE /* ISM_HIGH_IMP */
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_HIGH_IMP4_FX, nBits ) );
		IF( EQ_16( limit_flag, -1 ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_HIGH_IMP4_FX, nBits ) );
		}
		}
		}
		ELSE IF( EQ_16( (Word16) ism_mode, (Word16) ISM_MASA_MODE_PARAM_ONE_OBJ ) \|\|
		( EQ_16( (Word16) ism_mode, (Word16) ISM_MASA_MODE_DISC ) && EQ_32( element_brate, 9600 ) ) /* this condition corresponds to the ivas_total_brate = 24400 and 1 object */
		)
		{
		IF( EQ_16( (Word16) ism_mode, (Word16) ISM_MASA_MODE_PARAM_ONE_OBJ ) && EQ_32( element_brate, IVAS_13k2 ) )
		{
		IF( EQ_16( ism_imp, ISM_LOW_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_LOW_IMP3_FX, nBits ) );
		}
		ELSE IF( EQ_16( ism_imp, ISM_MEDIUM_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_MEDIUM_IMP3_FX, nBits ) );
		}
		ELSE /* ISM_HIGH_IMP */
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_HIGH_IMP4_FX, nBits ) );
		}
		}
		ELSE
		{
		IF( EQ_16( ism_imp, ISM_LOW_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_LOW_IMP3_FX, nBits ) );
		}
		ELSE IF( EQ_16( ism_imp, ISM_MEDIUM_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_MEDIUM_IMP3_FX, nBits ) );
		}
		ELSE /* ISM_HIGH_IMP */
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_HIGH_IMP3_FX, nBits ) );
		}
		}
		}
		ELSE IF( EQ_16( (Word16) ism_mode, (Word16) ISM_MASA_MODE_MASA_ONE_OBJ ) && EQ_32( element_brate, 16000 ) )
		{
		IF( EQ_16( ism_imp, ISM_LOW_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_LOW_IMP_FX, nBits ) );
		}
		ELSE IF( EQ_16( ism_imp, ISM_MEDIUM_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_MEDIUM_IMP_FX, nBits ) );
		}
		ELSE /* ISM_HIGH_IMP */
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_HIGH_IMP3_FX, nBits ) );
		}
		}
		ELSE
		{
		IF( EQ_16( ism_imp, ISM_LOW_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_LOW_IMP_FX, nBits ) );
		}
		ELSE IF( EQ_16( ism_imp, ISM_MEDIUM_IMP ) )
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_MEDIUM_IMP_FX, nBits ) );
		}
		ELSE /* ISM_HIGH_IMP */
		{
		nBits = extract_l( Mpy_32_16_1( GAMMA_ISM_HIGH_IMP_FX, nBits ) );
		}
		}
		}

		limit_low = MIN_BRATE_SWB_BWE / FRAMES_PER_SEC;
		IF( EQ_16( ism_imp, ISM_INACTIVE_IMP ) )
		{
		limit_low = BITS_ISM_INACTIVE;
		move16();
		}
		ELSE IF( GE_32( element_brate, SCE_CORE_16k_LOW_LIMIT ) )
		{
		limit_low = SCE_CORE_16k_LOW_LIMIT / FRAMES_PER_SEC;
		move16();
		}

		limit_high = IVAS_512k / FRAMES_PER_SEC;
		move16();
		IF( LE_32( element_brate, SCE_CORE_16k_LOW_LIMIT ) )
		{
		limit_high = ACELP_12k8_HIGH_LIMIT / FRAMES_PER_SEC;
		move16();
		}

		nBits = check_bounds_s( nBits, limit_low, limit_high );

		element_brate_out = L_mult0( nBits, FRAMES_PER_SEC );

		return element_brate_out;
		}
		#else
		int32_t ivas_interformat_brate(
		const ISM_MODE ism_mode, /* i : ISM mode */
		const int16_t nchan_ism, /* i : number of ISM channels */
		@@ -321,7 +607,7 @@ int32_t ivas_interformat_brate(

		return element_brate_out;
		}

		#endif

		/*---------------------------------------------------------------
		* ivas_combined_format_brate_sanity()
		@@ -329,6 +615,64 @@ int32_t ivas_interformat_brate(
		* Sanity check in combined format coding
		* ---------------------------------------------------------------*/

		#ifdef IVAS_FLOAT_FIXED
		void ivas_combined_format_brate_sanity(
		const Word32 element_brate, /* i : element bitrate */
		const Word16 core, /* i : core */
		const Word32 total_brate, /* i : total bitrate */
		Word32 core_brate, / i/o: core bitrate */
		Word16 inactive_coder_type_flag, / o : inactive coder_type flag */
		Word16 diff_nBits / o : number of differential bits */
		)
		{
		Word16 limit_high, nBits;
		Word32 brate_diff;

		brate_diff = L_sub( total_brate, *core_brate );

		/* sanity check: at lowest IVAS bit-rates and one ISM channel coded by
		low-rate core-coder mode, it can happen that the CPE (MASA) bit-budget
		for ACELP core-coding @12.8 kHz is too high */

		IF( LT_32( element_brate, ACELP_12k8_HIGH_LIMIT ) )
		{
		limit_high = ACELP_12k8_HIGH_LIMIT / FRAMES_PER_SEC;
		move16();
		nBits = extract_l( div_l( *core_brate, shr( FRAMES_PER_SEC, 1 ) ) );

		*diff_nBits = sub( nBits, limit_high );
		IF( GT_16( *diff_nBits, 0 ) )
		{
		IF( EQ_16( core, TCX_20_CORE ) \|\| EQ_16( core, TCX_10_CORE ) )
		{
		*diff_nBits = 0;
		move16();
		}
		ELSE /* ACELP core */
		{
		core_brate = L_sub( core_brate, L_mult0( *diff_nBits, FRAMES_PER_SEC ) );
		}
		}
		}

		/-----------------------------------------------------------------
		* set inactive coder_type flag in ACELP core
		-----------------------------------------------------------------/

		IF( EQ_16( core, ACELP_CORE ) )
		{
		inactive_coder_type_flag = 0; / AVQ by default */
		move16();
		IF( LE_32( L_add( *core_brate, brate_diff ), MAX_GSC_INACTIVE_BRATE ) )
		{
		inactive_coder_type_flag = 1; / GSC */
		move16();
		}
		}

		return;
		}
		#else
		void ivas_combined_format_brate_sanity(
		const int32_t element_brate, /* i : element bitrate */
		const int16_t core, /* i : core */
		@@ -381,7 +725,7 @@ void ivas_combined_format_brate_sanity(

		return;
		}

		#endif

		/*---------------------------------------------------------------
		* bits_index_ism_ratio()
		@@ -390,6 +734,38 @@ void ivas_combined_format_brate_sanity(
		* ---------------------------------------------------------------*/

		/!r : number of bits for ISM ratio index /
		#ifdef IVAS_FLOAT_FIXED
		Word16 bits_index_ism_ratio(
		const Word16 nchan_ism /* i : number of objects */
		)
		{
		Word16 bits_index;

		bits_index = 0;
		move16();
		IF( EQ_16( nchan_ism, 2 ) )
		{
		bits_index = 3;
		move16();
		}
		ELSE IF( EQ_16( nchan_ism, 3 ) )
		{
		bits_index = 6;
		move16();
		}
		ELSE IF( EQ_16( nchan_ism, 4 ) )
		{
		bits_index = 7;
		move16();
		}
		ELSE
		{
		assert( ( nchan_ism >= 2 && nchan_ism <= 4 ) && "Wrong number of objects for MASA_ISM." );
		}

		return bits_index;
		}
		#else
		int16_t bits_index_ism_ratio(
		const int16_t nchan_ism /* i : number of objects */
		)
		@@ -416,7 +792,7 @@ int16_t bits_index_ism_ratio(

		return bits_index;
		}

		#endif

		/*---------------------------------------------------------------
		* calculate_nbits_meta()
		@@ -424,6 +800,7 @@ int16_t bits_index_ism_ratio(
		*
		* ---------------------------------------------------------------*/


		void calculate_nbits_meta(
		const int16_t nchan_ism,
		float q_energy_ratio_ism[MAX_PARAM_SPATIAL_SUBFRAMES][MASA_FREQUENCY_BANDS][MAX_NUM_OBJECTS],
		@@ -476,12 +853,116 @@ void calculate_nbits_meta(
		}
		}
		bits_ism[obj] = bits_direction_masa[0] - (int16_t) ( ( 1 - ( (int16_t) ( priority[obj] * 1000.0f ) ) * 0.001f ) * 6 );
		// bits_ism[obj] = bits_direction_masa[0] - (int16_t) ( ( 1 - ( priority[obj] ) ) * 6 );
		}

		return;
		}
		#ifdef IVAS_FLOAT_FIXED
		static Word16 get_bits_ism( Word32 val )
		{
		Word16 res;
		IF( LE_32( val, 536870912 ) && GT_32( val, 447750340 ) )
		{
		res = 0;
		move16();
		}
		ELSE IF( LE_32( val, 447750340 ) && GT_32( val, 358092897 ) )
		{
		res = 1;
		move16();
		}
		ELSE IF( LE_32( val, 358092897 ) && GT_32( val, 268972326 ) )
		{
		res = 2;
		move16();
		}
		ELSE IF( LE_32( val, 268972326 ) && GT_32( val, 179314884 ) )
		{
		res = 3;
		move16();
		}
		ELSE IF( LE_32( val, 179314884 ) && GT_32( val, 89657442 ) )
		{
		res = 4;
		move16();
		}
		ELSE IF( LE_32( val, 89657442 ) && GT_32( val, 536870 ) )
		{
		res = 5;
		move16();
		}
		ELSE
		{
		res = 6;
		move16();
		}
		return res;
		}


		void calculate_nbits_meta_fx(
		const Word16 nchan_ism,
		Word32 q_energy_ratio_ism[MAX_PARAM_SPATIAL_SUBFRAMES][MASA_FREQUENCY_BANDS][MAX_NUM_OBJECTS], // Qx
		Word32 masa_to_total_energy_ratio[MAX_PARAM_SPATIAL_SUBFRAMES][MASA_FREQUENCY_BANDS], // Qx
		const Word16 numSf,
		const Word16 numCodingBands,
		Word16 *bits_ism,
		const Word16 idx_sep_obj,
		const Word16 ism_imp )
		{
		Word16 sf, band, obj;
		Word32 priority[MAX_NUM_OBJECTS], max_p;

		IF( GT_16( nchan_ism, 1 ) )
		{
		set32_fx( priority, 0, nchan_ism );
		FOR( sf = 0; sf < numSf; sf++ )
		{
		FOR( band = 0; band < numCodingBands; band++ )
		{
		FOR( obj = 0; obj < nchan_ism; obj++ )
		{
		priority[obj] = max( priority[obj], ( Mpy_32_32( q_energy_ratio_ism[sf][band][obj], L_sub( 1073741824, masa_to_total_energy_ratio[sf][band] ) ) ) ); // Qx - 1
		move32();
		}
		}
		}
		}
		ELSE
		{
		priority[0] = 536870912;
		}

		/* decide parameters for ISM metadata quantization */
		maximum_32_fx( priority, nchan_ism, &max_p );
		FOR( obj = 0; obj < nchan_ism; obj++ )
		{
		IF( EQ_16( obj, idx_sep_obj ) )
		{
		IF( EQ_16( ism_imp, 3 ) )
		{
		priority[obj] = 536870912;
		move32();
		}
		ELSE IF( EQ_16( ism_imp, 2 ) )
		{
		priority[obj] = L_shr( L_add( 536870912, max_p ), 1 );
		move32();
		}
		ELSE
		{
		priority[obj] = max_p;
		move32();
		}
		}
		bits_ism[obj] = sub( bits_direction_masa[0], get_bits_ism( priority[obj] ) );
		move16();
		}
		return;
		}
		#endif

		/*---------------------------------------------------------------
		* ivas_get_stereo_panning_gains()
		*
		@@ -525,6 +1006,149 @@ void ivas_get_stereo_panning_gains(
		return;
		}

		#ifdef IVAS_FLOAT_FIXED

		#define SIN_NEG_30_DEGREES_Q15 ( (Word16) 0xC000 )
		#define SIN_30_DEGREES_Q15 ( (Word16) 0x4000 )

		static void get_panning_gain(
		const Word16 sinAngleMapped,
		Word16 *panningGains )
		{
		Word16 tbl_len = 601;
		Word16 idx = shr( tbl_len, 1 );
		const Word16 *ptr_sin = &ivas_sine_panning_tbl_fx[0];
		const Word16 *ptr_tan_0 = ivas_tan_panning_gain_tbl_fx;

		Word16 lim_l = 0;
		move16();
		Word16 lim_r = tbl_len;
		move16();

		WHILE( 1 )
		{
		idx = shr( add( lim_l, lim_r ), 1 );
		IF( GE_16( idx, tbl_len ) )
		{
		panningGains[0] = ptr_tan_0[tbl_len - 1];
		move16();
		panningGains[1] = ptr_tan_0[0];
		move16();
		BREAK;
		}
		ELSE IF( LT_16( idx, 0 ) )
		{
		panningGains[0] = ptr_tan_0[0];
		move16();
		panningGains[1] = ptr_tan_0[tbl_len - 1];
		move16();
		BREAK;
		}
		ELSE IF( LE_16( sinAngleMapped, ptr_sin[idx + 1] ) && GE_16( sinAngleMapped, ptr_sin[idx] ) )
		{
		IF( EQ_16( sinAngleMapped, ptr_sin[idx + 1] ) )
		{
		panningGains[0] = ptr_tan_0[idx + 1];
		move16();
		panningGains[1] = ptr_tan_0[tbl_len - idx - 2];
		move16();
		BREAK;
		}
		ELSE IF( EQ_16( sinAngleMapped, ptr_sin[idx] ) )
		{
		panningGains[0] = ptr_tan_0[idx];
		move16();
		panningGains[1] = ptr_tan_0[tbl_len - idx - 1];
		move16();
		BREAK;
		}
		ELSE
		{
		Word16 mid = extract_l( L_shr( L_add( L_deposit_l( ptr_sin[idx] ), L_deposit_l( ptr_sin[idx + 1] ) ), 1 ) );
		IF( LE_16( sinAngleMapped, mid ) )
		{
		panningGains[0] = ptr_tan_0[idx];
		move16();
		panningGains[1] = ptr_tan_0[tbl_len - idx - 1];
		move16();
		}
		ELSE
		{
		panningGains[0] = ptr_tan_0[idx + 1];
		move16();
		panningGains[1] = ptr_tan_0[tbl_len - idx - 2];
		move16();
		}
		BREAK;
		}
		}
		ELSE IF( GT_16( sinAngleMapped, ptr_sin[idx] ) )
		{
		lim_l = add( idx, 1 );
		move16();
		}
		ELSE IF( LT_16( sinAngleMapped, ptr_sin[idx] ) )
		{
		lim_r = sub( idx, 1 );
		move16();
		}
		}
		}


		void ivas_get_stereo_panning_gains_fx(
		const Word16 aziDeg,
		const Word16 eleDeg,
		Word16 panningGains[2] )
		{
		/* Convert azi and ele to an azi value of the cone of confusion */
		Word16 azAddEl = add( aziDeg, eleDeg );
		Word16 azSubEl = sub( aziDeg, eleDeg );

		const Word16 *ptr_sin_az = ivas_sin_az_fx;

		WHILE( GT_16( azAddEl, 180 ) )
		{
		azAddEl = sub( azAddEl, 360 );
		}
		WHILE( LT_16( azAddEl, -180 ) )
		{
		azAddEl = add( azAddEl, 360 );
		}
		WHILE( GT_16( azSubEl, 180 ) )
		{
		azSubEl = sub( azSubEl, 360 );
		}
		WHILE( LT_16( azSubEl, -180 ) )
		{
		azSubEl = sub( azSubEl, 360 );
		}
		// sin_az_cos_el = (ptr_sin_az[azAddEl] + ptr_sin_az[azSubEl])/2;
		Word16 sin_az_cos_el = extract_l( L_shr( L_add( L_deposit_l( ptr_sin_az[azAddEl] ), L_deposit_l( ptr_sin_az[azSubEl] ) ), 1 ) );

		IF( GE_16( sin_az_cos_el, SIN_30_DEGREES_Q15 ) )
		{ /* Left side */
		panningGains[0] = (Word16) 0x7fff;
		move16();
		panningGains[1] = 0;
		move16();
		}
		ELSE IF( LE_16( sin_az_cos_el, SIN_NEG_30_DEGREES_Q15 ) )
		{ /* Right side */
		panningGains[0] = 0;
		move16();
		panningGains[1] = (Word16) 0x7fff;
		move16();
		}
		ELSE /* Tangent panning law */
		{
		get_panning_gain( sin_az_cos_el, panningGains );
		}

		return;
		}
		#endif


		/*---------------------------------------------------------------
		* calculate_brate_limit_flag()
		@@ -533,6 +1157,52 @@ void ivas_get_stereo_panning_gains(
		---------------------------------------------------------------/

		/! r: limitation flag /
		#ifdef IVAS_FLOAT_FIXED
		Word16 calculate_brate_limit_flag(
		const Word16 ism_imp[], /* i : ISM importance flags */
		const Word16 nchan_ism /* i : number of objects */
		)
		{
		Word16 n;
		Word16 brate_limit_flag;
		Word16 nzeros;
		Word16 nchan_ism_sat;

		brate_limit_flag = 0;
		move16();
		nzeros = 0;
		move16();
		FOR( n = 0; n < nchan_ism; n++ )
		{
		brate_limit_flag = add( brate_limit_flag, ism_imp[n] );
		IF( EQ_16( ism_imp[n], 0 ) )
		{
		nzeros = add( nzeros, 1 );
		}
		}
		nchan_ism_sat = nchan_ism;
		IF( EQ_16( nchan_ism & 1, 1 ) )
		{
		nchan_ism_sat = sub( nchan_ism, 1 );
		}

		IF( GE_16( i_mult( 2, brate_limit_flag ), add( i_mult( 4, nchan_ism ), nchan_ism_sat ) ) )
		{
		brate_limit_flag = 1;
		move16();
		}
		ELSE
		{
		IF( GE_16( i_mult( 2, nzeros ), nchan_ism ) )
		{
		brate_limit_flag = -1; /* there is no limitation, on the contrary */
		move16();
		}
		}

		return brate_limit_flag;
		}
		#else
		int16_t calculate_brate_limit_flag(
		const int16_t ism_imp[], /* i : ISM importance flags */
		const int16_t nchan_ism /* i : number of objects */
		@@ -567,3 +1237,4 @@ int16_t calculate_brate_limit_flag(

		return brate_limit_flag;
		}
		#endif
		No newline at end of file

lib_com/prot_fx2.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -8127,4 +8127,18 @@ void save_synthesis_hq_fec_fx(
		const Word16 output_frame, /* i : decoded synthesis */
		CPE_DEC_HANDLE hCPE /* i : CPE decoder structure */
		);
		void calculate_nbits_meta_fx(
		const Word16 nchan_ism,
		Word32 q_energy_ratio_ism[MAX_PARAM_SPATIAL_SUBFRAMES][MASA_FREQUENCY_BANDS][MAX_NUM_OBJECTS], // Qx
		Word32 masa_to_total_energy_ratio[MAX_PARAM_SPATIAL_SUBFRAMES][MASA_FREQUENCY_BANDS], // Qx
		const Word16 numSf,
		const Word16 numCodingBands,
		Word16 *bits_ism,
		const Word16 idx_sep_obj,
		const Word16 ism_imp );

		void ivas_get_stereo_panning_gains_fx(
		const Word16 aziDeg,
		const Word16 eleDeg,
		Word16 panningGains[2] );
		#endif

lib_com/rom_com.c

+213 −4

File changed.

Preview size limit exceeded, changes collapsed.

lib_com/rom_com.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -2053,4 +2053,8 @@ extern const Word16 pow_tilt_32k[64]; /* Q7 */

		//ivas_lfe_dec_fx.c
		extern const Word32 tbl_two_pow_shift_by_4[35]; /* Q30 */

		extern const Word16 ivas_tan_panning_gain_tbl_fx[601];
		extern const Word16 ivas_sine_panning_tbl_fx[601];
		extern const Word16 ivas_sin_az_fx[361];
		#endif

lib_dec/ivas_masa_dec.c

+18 −2

File changed.

Preview size limit exceeded, changes collapsed.