Merge branch 'ivas_dirac_changes' into 'main' (ef6d8916) · Commits · SA4 / Audio / IVAS BASOP

lib_com/ivas_dirac_com.c

+116 −1

Original line number	Diff line number	Diff line
		@@ -40,7 +40,8 @@
		#include "prot.h"
		#include "cnst.h"
		#include "wmc_auto.h"

		#include "prot_fx1.h"
		#include "prot_fx2.h"

		/-----------------------------------------------------------------------
		* Local function prototypes
		@@ -74,7 +75,23 @@ int16_t ivas_get_hodirac_flag(
		}
		}

		#ifdef IVAS_FLOAT_FIXED
		Word16 ivas_get_hodirac_flag_fx(
		const Word32 ivas_total_brate, /* i : IVAS total bitrate */
		const Word16 sba_order /* i : Ambisonic (SBA) order */
		)
		{
		IF( GT_16( sba_order, 1 ) && GT_32( ivas_total_brate, IVAS_256k ) )
		{
		return 1;
		}
		ELSE
		{
		return 0;
		}
		}

		#endif
		/*-------------------------------------------------------------------------
		* ivas_dirac_sba_config()
		*
		@@ -312,6 +329,104 @@ void ivas_dirac_config_bands(
		return;
		}

		#ifdef IVAS_FLOAT_FIXED
		void ivas_dirac_config_bands_fx(
		Word16 band_grouping, / o : band grouping */
		const Word16 nbands, /* i : number of bands */
		const Word16 max_band, /* i : maximal band index +1 */
		Word16 *dirac_to_spar_md_bands,
		const Word8 useLowerBandRes,
		const Word16 enc_param_start_band,
		IVAS_FB_MIXER_HANDLE hFbMdft )
		{
		Word16 i;
		{
		IF( EQ_16( nbands, 5 ) )
		{
		Copy( DirAC_band_grouping_5, band_grouping, 5 + 1 );
		}
		ELSE IF(EQ_16( nbands, 6 ) )
		{
		Copy( DirAC_band_grouping_6, band_grouping, 6 + 1 );
		}
		ELSE IF(EQ_16( nbands, 12 ) )
		{
		Word16 band;
		FOR( band = 0; band < DIRAC_MAX_NBANDS; band++ )
		{
		dirac_to_spar_md_bands[band] = band;
		}
		IF( hFbMdft != NULL )
		{
		Word16 sb, idx1, idx2, b;

		idx1 = -1;
		sb = 0;
		FOR( b = 0; b < max_band; b++ )
		{
		idx2 = hFbMdft->pFb->fb_bin_to_band.p_cldfb_map_to_spar_band[b];
		IF( GT_16( idx2, idx1 ) )
		{
		band_grouping[sb++] = b;
		idx1 = idx2;
		}
		}
		band_grouping[sb] = max_band;

		/* set the remaining bands to max_band to avoid problems for the DirAC parameter estimation with bw < FB */
		FOR( b = sb; b <= nbands; b++ )
		{
		band_grouping[b] = max_band;
		}
		}
		ELSE
		{
		Copy( DirAC_band_grouping_12, band_grouping, 12 + 1 );
		}

		IF( useLowerBandRes )
		{
		Word16 step = DIRAC_LOW_BANDRES_STEP;
		Word16 reduced_band;
		for ( band = enc_param_start_band + 2, reduced_band = enc_param_start_band + 1; band <= DIRAC_MAX_NBANDS; band += step, reduced_band++ )
		{
		band_grouping[reduced_band] = band_grouping[band];
		}
		FOR( ; reduced_band <= DIRAC_MAX_NBANDS; reduced_band++ )
		{
		band_grouping[reduced_band] = max_band;
		}
		for ( band = enc_param_start_band + ( DIRAC_MAX_NBANDS - enc_param_start_band ) / 2 - 1, reduced_band = DIRAC_MAX_NBANDS - 1; band >= enc_param_start_band; band--, reduced_band -= step )
		{
		dirac_to_spar_md_bands[reduced_band] = dirac_to_spar_md_bands[band];
		dirac_to_spar_md_bands[reduced_band - 1] = dirac_to_spar_md_bands[band];
		}
		}
		ELSE
		{
		/* always code the last two fb bands together */
		band_grouping[DIRAC_MAX_NBANDS - 1] = max_band;
		dirac_to_spar_md_bands[DIRAC_MAX_NBANDS - 1] = DIRAC_MAX_NBANDS - 2;
		}
		}
		ELSE
		{
		assert( 0 && "nbands must be 5 or 6!" );
		}
		}

		/* Limit the band range to band max */
		FOR( i = 0; i < nbands + 1; i++ )
		{
		IF( GT_16( band_grouping[i], max_band ) )
		{
		band_grouping[i] = max_band;
		}
		}

		return;
		}
		#endif
		/-------------------------------------------------------------------
		* ivas_get_dirac_sba_max_md_bits()
		*

lib_com/ivas_prot.h

+31 −3

Original line number	Diff line number	Diff line
		@@ -760,6 +760,11 @@ int16_t get_igf_startline_flt(
		float rand_triangular_signed(
		int16_t *seed );

		#ifdef IVAS_FLOAT_FIXED
		Word16 rand_triangular_signed_fx(
		int16_t *seed,
		Word16 *exp_fac);
		#endif
		Word64 var_32_fx(
		const Word32 x, / i : input vector */
		const int16_t len, /* i : length of inputvector */
		@@ -3269,7 +3274,19 @@ int16_t ivas_qmetadata_dec_sid_decode(
		int16_t element_mode, / o : element mode */
		const int16_t ivas_format /* i : IVAS format */
		);

		#ifdef IVAS_FLOAT_FIXED
		void ivas_qmetadata_to_dirac_fx(
		const IVAS_QMETADATA_HANDLE hQMetaData, /* i : frame of MASA q_metadata */
		DIRAC_DEC_HANDLE hDirAC, /* i : DirAC decoder structure */
		MASA_DECODER_HANDLE hMasa, /* i : MASA decoder structure */
		SPAT_PARAM_REND_COMMON_DATA_HANDLE hSpatParamRendCom, /* i/o: common spatial renderer data handle */
		const int32_t ivas_total_brate, /* i : IVAS total bitrate */
		const IVAS_FORMAT ivas_format, /* i : IVAS format */
		const int16_t hodirac_flag, /* i : flag to indicate HO-DirAC mode */
		int16_t dirac_to_spar_md_bands, / o : DirAC->SPAR MD bands */
		Word32 q
		);
		#else
		void ivas_qmetadata_to_dirac(
		const IVAS_QMETADATA_HANDLE hQMetaData, /* i : frame of MASA q_metadata */
		DIRAC_DEC_HANDLE hDirAC, /* i : DirAC decoder structure */
		@@ -3280,7 +3297,7 @@ void ivas_qmetadata_to_dirac(
		const int16_t hodirac_flag, /* i : flag to indicate HO-DirAC mode */
		int16_t dirac_to_spar_md_bands / o : DirAC->SPAR MD bands */
		);

		#endif
		ivas_error ivas_qmetadata_open(
		IVAS_QMETADATA_HANDLE hQMetaData / i/o: q_metadata handle */
		);
		@@ -3709,6 +3726,17 @@ void ivas_dirac_config_bands(
		IVAS_FB_MIXER_HANDLE hFbMdft
		);

		#ifdef IVAS_FLOAT_FIXED
		void ivas_dirac_config_bands_fx(
		Word16 band_grouping, / o : band grouping */
		const Word16 nbands, /* i : number of bands */
		const Word16 max_band, /* i : maximal band index +1 */
		Word16 dirac_to_spar_md_bands, / o : mapping of DirAC parameter band index to SPAR FB band index */
		const Word8 useLowerBandRes, /* i : flag indicating lower band resolution for DirAC */
		const Word16 enc_param_start_band, /* i : band index of first DirAC parameter band */
		IVAS_FB_MIXER_HANDLE hFbMdft
		);
		#endif
		void ivas_get_dirac_sba_max_md_bits(
		const int32_t sba_total_brate,
		int16_t *bits_frame_nominal,

lib_com/ivas_prot_fx.h

+47 −0

Original line number	Diff line number	Diff line
		@@ -268,4 +268,51 @@ void stereo_dft_dec_core_switching_fx(
		Word16 *q,
		Word16 *q_DFT );

		Word16 ivas_get_hodirac_flag_fx(
		const Word32 ivas_total_brate, /* i : IVAS total bitrate */
		const Word16 sba_order /* i : Ambisonic (SBA) order */
		);

		void ivas_sba_config_fx(
		const Word32 sba_total_brate, /* i : SBA total bitrate */
		Word16 sba_order, /* i : Ambisonic (SBA) order */
		Word16 nb_channels, /* i : Number of ambisonic channels */
		Word16 nchan_transport, / o : number of transport channels */
		const Word16 sba_planar, /* i : SBA Planar flag */
		Word16 nSCE, / o : number of SCEs */
		Word16 nCPE, / o : number of CPEs */
		Word16 element_mode / o : element mode of the core coder */
		);

		Word16 ivas_get_bits_to_encode_fx(
		Word32 val);

		Word16 ivas_get_spar_table_idx_fx(
		const Word32 ivas_total_brate, /* i : IVAS total bitrate */
		const Word16 sba_order, /* i : Ambisonic (SBA) order */
		const Word16 bwidth, /* i : audio bandwidth */
		Word16 bitlen, / o : number of bits */
		Word16 ind / o : indice */
		);

		Word16 ivas_get_sba_num_TCs_fx(
		const Word32 ivas_total_brate, /* i : IVAS total bitrate */
		const Word16 sba_order /* i : Ambisonic (SBA) order */
		);

		Word16 ivas_sba_get_nchan_fx(
		const Word16 sba_order, /* i : Ambisonic (SBA) order */
		const Word16 sba_planar /* i : SBA planar flag */
		);

		void ivas_dirac_dec_set_md_map_fx(
		Decoder_Struct st_ivas, / i/o: IVAS decoder structure */
		const Word16 nCldfbTs /* i : number of CLDFB time slots */
		);

		void ivas_jbm_dec_get_adapted_subframes_fx(
		const Word16 nCldfbTs, /* i : number of time slots in the current frame */
		Word16 subframe_nbslots, / i/o: subframe grid */
		Word16 nb_subframes / i/o: number of subframes in the frame */
		);
		#endif
		No newline at end of file

lib_com/ivas_rom_com_fx.c

+56 −21

Original line number	Diff line number	Diff line
		@@ -247,4 +247,39 @@ const Word16 dft_trigo_48k_fx[STEREO_DFT_N_MAX_ENC / 4 + 1] =
		32640, 32649, 32658, 32666, 32675, 32683, 32690, 32697, 32704, 32711, 32717, 32723, 32728, 32733, 32738, 32742, 32746, 32750, 32753, 32756, 32759, 32761, 32763,
		32765, 32766, 32767, 32767, 32767
		};

		const Word16 ivas_divde_255[256] = {
		0, 128, 257, 385, 514, 642, 771, 899, 1028,
		1156, 1285, 1413, 1542, 1670, 1799, 1927, 2056,
		2184, 2313, 2441, 2570, 2698, 2827, 2955, 3084,
		3212, 3341, 3469, 3598, 3726, 3855, 3983, 4112,
		4240, 4369, 4497, 4626, 4754, 4883, 5011, 5140,
		5268, 5397, 5525, 5654, 5782, 5911, 6039, 6168,
		6296, 6425, 6553, 6682, 6810, 6939, 7067, 7196,
		7324, 7453, 7581, 7710, 7838, 7967, 8095, 8224,
		8352, 8481, 8609, 8738, 8866, 8995, 9123, 9252,
		9380, 9509, 9637, 9766, 9894, 10023, 10151, 10280,
		10408, 10537, 10665, 10794, 10922, 11051, 11179, 11308,
		11436, 11565, 11693, 11822, 11950, 12079, 12207, 12336,
		12464, 12593, 12721, 12850, 12978, 13107, 13235, 13364,
		13492, 13621, 13749, 13878, 14006, 14135, 14263, 14392,
		14520, 14649, 14777, 14906, 15034, 15163, 15291, 15420,
		15548, 15677, 15805, 15934, 16062, 16191, 16319, 16448,
		16576, 16705, 16833, 16962, 17090, 17219, 17347, 17476,
		17604, 17733, 17861, 17990, 18118, 18247, 18375, 18504,
		18632, 18761, 18889, 19018, 19146, 19275, 19403, 19532,
		19660, 19789, 19917, 20046, 20174, 20303, 20431, 20560,
		20688, 20817, 20945, 21074, 21202, 21331, 21459, 21588,
		21716, 21845, 21973, 22102, 22230, 22359, 22487, 22616,
		22744, 22873, 23001, 23130, 23258, 23387, 23515, 23644,
		23772, 23901, 24029, 24158, 24286, 24415, 24543, 24672,
		24800, 24929, 25057, 25186, 25314, 25443, 25571, 25700,
		25828, 25957, 26085, 26214, 26342, 26471, 26599, 26728,
		26856, 26985, 27113, 27242, 27370, 27499, 27627, 27756,
		27884, 28013, 28141, 28270, 28398, 28527, 28655, 28784,
		28912, 29041, 29169, 29298, 29426, 29555, 29683, 29812,
		29940, 30069, 30197, 30326, 30454, 30583, 30711, 30840,
		30968, 31097, 31225, 31354, 31482, 31611, 31739, 31868,
		31996, 32125, 32253, 32382, 32510, 32639, 32767
		};
		/* clang-format on */

lib_com/ivas_rom_com_fx.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -52,4 +52,6 @@ extern const Word16 dft_trigo_12k8_fx[STEREO_DFT_N_12k8_ENC / 4 + 1];
		extern const Word16 dft_trigo_32k_fx[STEREO_DFT_N_32k_ENC / 4 + 1];
		extern const Word16 dft_trigo_48k_fx[STEREO_DFT_N_MAX_ENC / 4 + 1];

		extern const Word16 ivas_divde_255[256];

		#endif
		No newline at end of file