Functions in ivas_td_stereo_bit_alloc converted to fxd (b9103e24) · Commits · SA4 / Audio / IVAS BASOP

lib_com/ivas_prot.h

+22 −0

Original line number	Diff line number	Diff line
		@@ -2225,12 +2225,34 @@ void tdm_low_rate_dec(
		const float lsf_new / i : ISFs at the end of the frame */
		);

		#ifdef IVAS_FLOAT_FIXED
		void tdm_SCh_LSF_intra_pred_fx(
		const Word32 element_brate, /* i : element bitrate */
		const Word32 tdm_lsfQ_PCh_fx, / i : primary channel LSFs */
		Word32 pred_lsf_SCh_fx / o : predicted secondary channel LSFs */
		);
		#endif

		void tdm_SCh_LSF_intra_pred(
		const int32_t element_brate, /* i : element bitrate */
		const float tdm_lsfQ_PCh, / i : primary channel LSFs */
		float pred_lsf_SCh / o : predicted secondary channel LSFs */
		);

		#ifdef IVAS_FLOAT_FIXED
		void tdm_SCh_lsf_reuse_fx(
		const Word16 enc_dec, /* i : encoder/decoder flag */
		const Word32 element_brate, /* i : element bitrate */
		Word32 lsf_new_fx[M], /* i/o: LSFs at the end of the frame */
		Word16 lsf_new_q_fx, /* i/o: LSFs at the end of the frame */
		Word16 lsp_new_fx[M], /* i/o: LSPs at the end of the frame */
		Word16 lsp_new_q_fx, /* i/o: LSPs at the end of the frame */
		const Word32 tdm_lsfQ_PCh_fx[M], /* i : primary channel LSFs */
		const Word32 lsf_wgts_fx[M], /* i : LSF weights */
		Word16 beta_index / i/o: quantization index */
		);
		#endif

		void tdm_SCh_lsf_reuse(
		const int16_t enc_dec, /* i : encoder/decoder flag */
		const int32_t element_brate, /* i : element bitrate */

lib_com/ivas_rom_com.c

+81 −2

Original line number	Diff line number	Diff line
		@@ -634,7 +634,86 @@ const int16_t tdm_bit_allc_tbl[5][6] =
		{ 1650, 6050, 0, 10000, 0, 10000 }, /* IVAS_32k */
		{ 1650, 6050, 0, 13000, 0, 14000 } /* IVAS_48k */
		};

		#ifdef IVAS_FLOAT_FIXED
		/* LSFs Intra-frame prediction tables */
		//Q18
		const Word32 tdm_LSF_MEAN_RE_USE_OUT_fx[M] =
		{
		78981888, 136655664, 228279712, 351345824, 448816480, 548262656, 652351360, 744776256, 837960320, 941893888, 1037661888, 1125471744, 1234781824, 1341864320, 1454050176, 1551520000,
		};
		//Q18
		const Word32 tdm_LSF_MEAN_RE_USE_IN_fx[M] =
		{
		75081712, 136935120, 232599584, 353359904, 452356736, 551120000, 658427840, 747921216, 841828032, 946883008, 1040944704, 1134499968, 1240576256, 1351348096, 1460888960, 1563513856,
		};
		//Q18
		const Word32 tdm_LSF_MEAN_RE_USE_fx[M] =
		{
		69608200, 140188480, 241060944, 353105792, 460584864, 556547904, 670261760, 767422464,
		864841216, 966328064, 1057613056, 1151813248, 1253489536, 1351602432, 1452951424, 1553826432
		};

		const Word32 tdm_Beta_Q1bit_re_use_13k2_fx[2] = { 2083059138, 1610612736 };//Q31
		const Word32 tdm_Beta_Q1bit_re_use_16k4_fx[2] = { 2040109465, 1524713390 };//Q31
		const Word32 tdm_Beta_Q1bit_re_use_24k4_32k_fx[2] = { 1997159792, 1567663063 };//Q31
		const Word32 tdm_Beta_Q1bit_re_use_48k_fx[2] = { 2083059138, 1653562408 };//Q31
		//Q31
		const Word32 tdm_RE_USE_adaptive_beta_prd_diag_3_fx[15 + 16 + 15] =
		{
		1902455808, 442381632,
		125627792, 1770600320, 492632736,
		78383152, 1755567872, 364213216,
		-12884902, 1821710336, 442596384,
		142378160, 1929084544, 291413536,
		142592912, 1707464192, 415323328,
		200789728, 1706819968, 361851008,
		238155936, 1709396992, 392560000,
		230424992, 1682553472, 387406048,
		317612832, 1580977408, 425631264,
		286689056, 1636597248, 408021888,
		408666144, 1582480640, 368293440,
		383325824, 1549194752, 353475808,
		422410048, 1479831040, 263925744,
		438730912, 1356565376, 116608360,
		379460352, 1158782208,
		};
		//Q18
		const Word32 tdm_LSF_MEAN_PRED_QNT_fx[M] =
		{
		102580472, 159515808, 253756928, 355005792, 448190432, 545390272, 642420608, 733207808,
		837863616, 931704576, 1026299968, 1122975360, 1234068608, 1339500800, 1448725504, 1547547776
		};
		//Q18
		const Word32 tdm_LSF_MEAN_PRED_QNT_IN_fx[M] =
		{
		75639032, 140369984, 235860912, 351879296, 453702048, 552355776, 653120000, 749686720, 849157568, 950448448, 1046620416, 1142095360, 1245801600, 1351007616, 1459383680, 1565687296,
		};
		//Q18
		const Word32 tdm_LSF_MEAN_PRED_QNT_OUT_fx[M] =
		{
		75081712, 136935120, 232599584, 353359904, 452356736, 551120000, 658427840, 747921216, 841828032, 946883008, 1040944704, 1134499968, 1240576256, 1351348096, 1460888960, 1563513856,
		};
		//Q31
		const Word32 tdm_PRED_QNT_fixed_beta_prd_diag_3_fx[15 + 16 + 15] =
		{
		1511828480, 258342288,
		-240303424, 1576253056, 387191296,
		54331336, 1439243520, 408236640,
		-396640224, 1694794112, 646392576,
		-89764816, 1871746688, 394492736,
		7086696, 1484984960, 514107584,
		45741400, 1444827008, 524200768,
		151397600, 1621135360, 425846016,
		161490768, 1535880320, 466648192,
		190267056, 1323494144, 658633216,
		46600396, 1743971456, 434006432,
		340161408, 1570025344, 374950656,
		258557024, 1566804096, 424772256,
		264355232, 1611042176, 264999488,
		367004960, 1368376576, 227633264,
		256194800, 1411755776,
		};
		#else
		/* LSFs Intra-frame prediction tables */
		const float tdm_LSF_MEAN_RE_USE_OUT[M] =
		{
		@@ -711,7 +790,7 @@ const float tdm_PRED_QNT_fixed_beta_prd_diag_3[15 + 16 + 15] =
		0.1709f, 0.6372f, 0.1060f,
		0.1193f, 0.6574f,
		};

		#endif
		const int16_t fast_FCB_bits_2sfr[] = {8, 14, 18, 20, 24, 128/stop value/};

		const int16_t fast_FCB_rates_2sfr[] = {/1650,/ (8+14)50, 2850, 3250, 3450, 3650, 3850, 4050, 4250, 4450, 48*50};

lib_com/ivas_rom_com.h

+18 −1

Original line number	Diff line number	Diff line
		@@ -106,6 +106,23 @@ extern const float tdm_den_ratio_tabl[];
		extern const int16_t tdm_bit_allc_tbl[5][6];

		/* LSFs Intra-frame prediction tables */
		#ifdef IVAS_FLOAT_FIXED
		extern const Word32 tdm_LSF_MEAN_RE_USE_OUT_fx[M];
		extern const Word32 tdm_LSF_MEAN_RE_USE_IN_fx[M];
		extern const Word32 tdm_LSF_MEAN_RE_USE_fx[M];

		extern const Word32 tdm_Beta_Q1bit_re_use_13k2_fx[2];
		extern const Word32 tdm_Beta_Q1bit_re_use_16k4_fx[2];
		extern const Word32 tdm_Beta_Q1bit_re_use_24k4_32k_fx[2];
		extern const Word32 tdm_Beta_Q1bit_re_use_48k_fx[2];

		extern const Word32 tdm_RE_USE_adaptive_beta_prd_diag_3_fx[15 + 16 + 15];

		extern const Word32 tdm_LSF_MEAN_PRED_QNT_OUT_fx[M];
		extern const Word32 tdm_LSF_MEAN_PRED_QNT_IN_fx[M];
		extern const Word32 tdm_LSF_MEAN_PRED_QNT_fx[M];
		extern const Word32 tdm_PRED_QNT_fixed_beta_prd_diag_3_fx[15 + 16 + 15];
		#else
		extern const float tdm_LSF_MEAN_RE_USE_OUT[M];
		extern const float tdm_LSF_MEAN_RE_USE_IN[M];
		extern const float tdm_LSF_MEAN_RE_USE[M];
		@@ -121,7 +138,7 @@ extern const float tdm_LSF_MEAN_PRED_QNT_OUT[M];
		extern const float tdm_LSF_MEAN_PRED_QNT_IN[M];
		extern const float tdm_LSF_MEAN_PRED_QNT[M];
		extern const float tdm_PRED_QNT_fixed_beta_prd_diag_3[15 + 16 + 15];

		#endif
		extern const int16_t fast_FCB_bits_2sfr[];
		extern const int16_t fast_FCB_rates_2sfr[];

lib_com/ivas_stereo_td_bit_alloc.c

+349 −2

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@
		#include "prot.h"
		#include "wmc_auto.h"
		#ifdef IVAS_FLOAT_FIXED
		#include "prot_fx1.h"
		#include "prot_fx2.h"
		#endif

		@@ -549,6 +550,31 @@ void td_stereo_param_updt_fx(
		return;
		}
		#endif

		#ifdef IVAS_FLOAT_FIXED
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_zero_bits_fx()
		*
		*
		-------------------------------------------------------------------/

		static void tdm_SCh_LSF_intra_pred_zero_bits_fx(
		const Word32 tdm_lsfQ_PCh_fx, / i : primary channel LSFs */
		Word32 pred_lsf_SCh_fx, / o : predicted secondary channel LSFs */
		const Word32 lsf_mean_fx, / i : secondary channel mean LSFs */
		const Word32 beta_fx /* i : pull to average beta factor */
		)
		{
		Word16 i;
		/* pulling the LSFs closer to the average */
		FOR( i = 0; i < M; i++ )
		{
		pred_lsf_SCh_fx[i] = L_add( Mpy_32_32( beta_fx, tdm_lsfQ_PCh_fx[i] ), Mpy_32_32( L_sub( ONE_IN_Q31, beta_fx ), lsf_mean_fx[i] ) );
		}

		return;
		}
		#else
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_zero_bits()
		*
		@@ -572,8 +598,60 @@ static void tdm_SCh_LSF_intra_pred_zero_bits(

		return;
		}
		#endif
		#ifdef IVAS_FLOAT_FIXED
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_tri_diag_mat_fx()
		*
		*
		-------------------------------------------------------------------/

		static void tdm_SCh_LSF_intra_pred_tri_diag_mat_fx(
		Word32 lsf_SCh_fx, / i/o: secondary channel LSFs */
		const Word32 lsf_mean_in_fx, / i : secondary channel mean LSFs (in) */
		const Word32 lsf_mean_out_fx, / i : secondary channel mean LSFs (out) */
		const Word32 prd_diag_3_fx / i : secondary channel mean LSFs */
		)
		{
		Word16 i;
		Word32 lsf_tmp_fx[M];
		const Word32 *prd_ptr_fx;
		Word32 *lsf_tmp_ptr1_fx;
		Word32 *lsf_tmp_ptr2_fx;
		Word32 *lsf_SCh_ptr_fx;

		prd_ptr_fx = prd_diag_3_fx;

		v_sub_32( lsf_SCh_fx, lsf_mean_in_fx, lsf_tmp_fx, M );

		lsf_tmp_ptr1_fx = lsf_tmp_fx;
		lsf_SCh_ptr_fx = lsf_SCh_fx;

		lsf_tmp_ptr2_fx = lsf_tmp_ptr1_fx;

		lsf_SCh_ptr_fx = Mpy_32_32( lsf_tmp_ptr1_fx++, *prd_ptr_fx++ );
		lsf_SCh_ptr_fx = L_add( lsf_SCh_ptr_fx, Mpy_32_32( lsf_tmp_ptr1_fx++, prd_ptr_fx++ ) );
		lsf_SCh_ptr_fx++;

		FOR( i = 1; i < M - 1; i++ )
		{
		lsf_tmp_ptr1_fx = lsf_tmp_ptr2_fx;
		lsf_SCh_ptr_fx = Mpy_32_32( lsf_tmp_ptr1_fx++, *prd_ptr_fx++ );
		lsf_tmp_ptr2_fx = lsf_tmp_ptr1_fx;
		lsf_SCh_ptr_fx = L_add( lsf_SCh_ptr_fx, Mpy_32_32( ( lsf_tmp_ptr1_fx++ ), ( prd_ptr_fx++ ) ) );
		( lsf_SCh_ptr_fx ) = L_add( lsf_SCh_ptr_fx, Mpy_32_32( ( lsf_tmp_ptr1_fx ), ( prd_ptr_fx++ ) ) );
		lsf_SCh_ptr_fx++;
		}

		lsf_tmp_ptr1_fx = lsf_tmp_ptr2_fx;

		lsf_SCh_ptr_fx = L_add( Mpy_32_32( ( lsf_tmp_ptr1_fx++ ), ( prd_ptr_fx++ ) ), Mpy_32_32( ( lsf_tmp_ptr1_fx ), ( *prd_ptr_fx ) ) );

		v_add_32( lsf_SCh_fx, lsf_mean_out_fx, lsf_SCh_fx, M );

		return;
		}
		#else
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_tri_diag_mat()
		*
		@@ -622,7 +700,50 @@ static void tdm_SCh_LSF_intra_pred_tri_diag_mat(

		return;
		}
		#endif
		#ifdef IVAS_FLOAT_FIXED
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_fx()
		*
		*
		-------------------------------------------------------------------/

		void tdm_SCh_LSF_intra_pred_fx(
		const Word32 element_brate, /* i : element bitrate */
		const Word32 tdm_lsfQ_PCh_fx, / i : primary channel LSFs */
		Word32 pred_lsf_SCh_fx / o : predicted secondary channel LSFs */
		)
		{
		Word32 fixed_beta;

		IF( element_brate <= IVAS_13k2 )
		{
		fixed_beta = 1868310773; // 0.87f in Q31
		}
		ELSE IF( element_brate <= IVAS_16k4 )
		{
		fixed_beta = 2018634629; // 0.94f in Q31
		}
		ELSE IF( element_brate <= IVAS_24k4 )
		{
		fixed_beta = 1954210119; // 0.91f in Q31
		}
		ELSE IF( element_brate <= IVAS_32k )
		{
		fixed_beta = 1975684956; // 0.92f in Q31
		}
		ELSE
		{
		fixed_beta = 1954210119; // 0.91f in Q31
		}

		tdm_SCh_LSF_intra_pred_zero_bits_fx( tdm_lsfQ_PCh_fx, pred_lsf_SCh_fx, tdm_LSF_MEAN_PRED_QNT_fx, fixed_beta );

		tdm_SCh_LSF_intra_pred_tri_diag_mat_fx( pred_lsf_SCh_fx, tdm_LSF_MEAN_PRED_QNT_IN_fx, tdm_LSF_MEAN_PRED_QNT_OUT_fx, tdm_PRED_QNT_fixed_beta_prd_diag_3_fx );

		return;
		}
		#endif

		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred()
		@@ -636,6 +757,47 @@ void tdm_SCh_LSF_intra_pred(
		float pred_lsf_SCh / o : predicted secondary channel LSFs */
		)
		{
		#ifdef IVAS_FLOAT_FIXED
		Word32 fixed_beta;

		IF( element_brate <= IVAS_13k2 )
		{
		fixed_beta = 1868310773; // 0.87f in Q31
		}
		ELSE IF( element_brate <= IVAS_16k4 )
		{
		fixed_beta = 2018634629; // 0.94f in Q31
		}
		ELSE IF( element_brate <= IVAS_24k4 )
		{
		fixed_beta = 1954210119; // 0.91f in Q31
		}
		ELSE IF( element_brate <= IVAS_32k )
		{
		fixed_beta = 1975684956; // 0.92f in Q31
		}
		ELSE
		{
		fixed_beta = 1954210119; // 0.91f in Q31
		}

		Word32 pred_lsf_SCh_fx[M];
		Word32 tdm_lsfQ_PCh_fx[M];

		FOR( Word16 i = 0; i < M; i++ )
		{
		tdm_lsfQ_PCh_fx[i] = (Word32) ( tdm_lsfQ_PCh[i] * ( 1 << 18 ) );
		}

		tdm_SCh_LSF_intra_pred_zero_bits_fx( tdm_lsfQ_PCh_fx, pred_lsf_SCh_fx, tdm_LSF_MEAN_PRED_QNT_fx, fixed_beta );

		tdm_SCh_LSF_intra_pred_tri_diag_mat_fx( pred_lsf_SCh_fx, tdm_LSF_MEAN_PRED_QNT_IN_fx, tdm_LSF_MEAN_PRED_QNT_OUT_fx, tdm_PRED_QNT_fixed_beta_prd_diag_3_fx );

		FOR( Word16 i = 0; i < M; i++ )
		{
		pred_lsf_SCh[i] = (float) pred_lsf_SCh_fx[i] / ( 1 << 18 );
		}
		#else
		float fixed_beta;

		if ( element_brate <= IVAS_13k2 )
		@@ -662,11 +824,39 @@ void tdm_SCh_LSF_intra_pred(
		tdm_SCh_LSF_intra_pred_zero_bits( tdm_lsfQ_PCh, pred_lsf_SCh, tdm_LSF_MEAN_PRED_QNT, fixed_beta );

		tdm_SCh_LSF_intra_pred_tri_diag_mat( pred_lsf_SCh, tdm_LSF_MEAN_PRED_QNT_IN, tdm_LSF_MEAN_PRED_QNT_OUT, tdm_PRED_QNT_fixed_beta_prd_diag_3 );

		#endif
		return;
		}

		#ifdef IVAS_FLOAT_FIXED
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_one_bit_dec_fx()
		*
		*
		-------------------------------------------------------------------/

		static void tdm_SCh_LSF_intra_pred_one_bit_dec_fx(
		const Word32 tdm_lsfQ_PCh_fx, / i : primary channel LSFs */
		Word32 pred_lsf_SCh_fx, / o : predicted secondary channel LSFs */
		const Word32 lsf_mean_fx, / i : secondary channel mean LSFs */
		const Word32 Beta_Q_x_fx, / i : beta quantization values */
		const Word16 beta_index_fx /* i : the quantization bits for beta (-1 if beta fixed)*/
		)
		{
		Word16 i;
		Word32 beta_fx;

		beta_fx = Beta_Q_x_fx[beta_index_fx]; // Q31

		/* pulling the LSFs closer to the avergae */
		for ( i = 0; i < M; i++ )
		{
		pred_lsf_SCh_fx[i] = Madd_32_32( Mpy_32_32( beta_fx, tdm_lsfQ_PCh_fx[i] ), L_sub( ONE_IN_Q31, beta_fx ), lsf_mean_fx[i] );
		}

		return;
		}
		#else
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_one_bit_dec()
		*
		@@ -694,8 +884,56 @@ static void tdm_SCh_LSF_intra_pred_one_bit_dec(

		return;
		}
		#endif
		#ifdef IVAS_FLOAT_FIXED
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_one_bit_enc_fx()
		*
		*
		-------------------------------------------------------------------/

		static void tdm_SCh_LSF_intra_pred_one_bit_enc_fx(
		const Word32 lsf_SCh_fx, / i : secondary channel LSFs */
		const Word32 tdm_lsfQ_PCh_fx, / i : primary channel LSFs */
		Word32 pred_lsf_SCh_fx, / o : predicted secondary channel LSFs */
		const Word32 lsf_mean_fx, / i : secondary channel mean LSFs */
		const Word32 lsf_wgts_new_fx, / i : Improved wgts for LSFs */
		const Word32 Beta_Q_x_fx, / i : beta quantization values */
		Word16 beta_index / o : the quantization bits for beta (-1 if beta fixed) */
		)
		{
		Word16 i;

		Word32 A_temp_fx[M];
		Word32 B_temp_fx[M];
		Word32 WD_fx[2] = { 0 };

		FOR( i = 0; i < M; i++ )
		{
		A_temp_fx[i] = L_sub( lsf_SCh_fx[i], lsf_mean_fx[i] );
		B_temp_fx[i] = L_sub( lsf_mean_fx[i], tdm_lsfQ_PCh_fx[i] );
		}

		FOR( i = 0; i < M; i++ )
		{
		WD_fx[0] += Mpy_32_32( lsf_wgts_new_fx[i], Mpy_32_32( A_temp_fx[i], A_temp_fx[i] ) ) + 2 * Mpy_32_32( Beta_Q_x_fx[0], Mpy_32_32( lsf_wgts_new_fx[i], Mpy_32_32( A_temp_fx[i], B_temp_fx[i] ) ) ) + Mpy_32_32( lsf_wgts_new_fx[i], Mpy_32_32( Mpy_32_32( Beta_Q_x_fx[0], Beta_Q_x_fx[0] ), Mpy_32_32( B_temp_fx[i], B_temp_fx[i] ) ) );
		WD_fx[1] += Mpy_32_32( lsf_wgts_new_fx[i], Mpy_32_32( A_temp_fx[i], A_temp_fx[i] ) ) + 2 * Mpy_32_32( Beta_Q_x_fx[1], Mpy_32_32( lsf_wgts_new_fx[i], Mpy_32_32( A_temp_fx[i], B_temp_fx[i] ) ) ) + Mpy_32_32( lsf_wgts_new_fx[i], Mpy_32_32( Mpy_32_32( Beta_Q_x_fx[1], Beta_Q_x_fx[1] ), Mpy_32_32( B_temp_fx[i], B_temp_fx[i] ) ) );
		}

		IF( WD_fx[0] < WD_fx[1] )
		{
		*beta_index = 0;
		}
		ELSE
		{
		*beta_index = 1;
		}

		tdm_SCh_LSF_intra_pred_one_bit_dec_fx( tdm_lsfQ_PCh_fx, pred_lsf_SCh_fx, tdm_LSF_MEAN_RE_USE_fx, Beta_Q_x_fx, *beta_index );

		return;
		}
		#else
		/-------------------------------------------------------------------
		* tdm_SCh_LSF_intra_pred_one_bit_enc()
		*
		@@ -744,7 +982,61 @@ static void tdm_SCh_LSF_intra_pred_one_bit_enc(

		return;
		}
		#endif
		#ifdef IVAS_FLOAT_FIXED
		/-------------------------------------------------------------------
		* tdm_SCh_lsf_reuse_fx()
		*
		*
		-------------------------------------------------------------------/

		void tdm_SCh_lsf_reuse_fx(
		const Word16 enc_dec, /* i : encoder/decoder flag */
		const Word32 element_brate, /* i : element bitrate */
		Word32 lsf_new_fx[M], /* i/o: LSFs at the end of the frame */
		Word16 lsf_new_q_fx,
		Word16 lsp_new_fx[M], /* i/o: LSPs at the end of the frame */
		Word16 lsp_new_q_fx,
		const Word32 tdm_lsfQ_PCh_fx[M], /* i : primary channel LSFs */
		const Word32 lsf_wgts_fx[M], /* i : LSF weights */
		Word16 beta_index / i/o: quantization index */
		)
		{
		const Word32 *Beta_Q1bit_re_use_fx;

		IF( element_brate <= IVAS_13k2 )
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_13k2_fx;
		}
		ELSE IF( element_brate <= IVAS_16k4 )
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_16k4_fx;
		}
		ELSE IF( element_brate <= IVAS_32k )
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_24k4_32k_fx;
		}
		ELSE
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_48k_fx;
		}

		IF( enc_dec == ENC )
		{
		tdm_SCh_LSF_intra_pred_one_bit_enc_fx( lsf_new_fx, tdm_lsfQ_PCh_fx, lsf_new_fx, tdm_LSF_MEAN_RE_USE_fx, lsf_wgts_fx, Beta_Q1bit_re_use_fx, beta_index );
		}
		ELSE /* DEC */
		{
		tdm_SCh_LSF_intra_pred_one_bit_dec_fx( tdm_lsfQ_PCh_fx, lsf_new_fx, tdm_LSF_MEAN_RE_USE_fx, Beta_Q1bit_re_use_fx, *beta_index );
		}

		tdm_SCh_LSF_intra_pred_tri_diag_mat_fx( lsf_new_fx, tdm_LSF_MEAN_RE_USE_IN_fx, tdm_LSF_MEAN_RE_USE_OUT_fx, tdm_RE_USE_adaptive_beta_prd_diag_3_fx );

		lsf2lsp_32_fx( lsf_new_fx, lsf_new_q_fx, lsp_new_fx, &lsp_new_q_fx, M, INT_FS_12k8 );

		return;
		}
		#endif

		/-------------------------------------------------------------------
		* tdm_SCh_lsf_reuse()
		@@ -762,6 +1054,61 @@ void tdm_SCh_lsf_reuse(
		int16_t beta_index / i/o: quantization index */
		)
		{
		#ifdef IVAS_FLOAT_FIXED
		////////// to be removed ////////////////
		Word32 lsf_new_fx[M];
		Word32 tdm_lsfQ_PCh_fx[M];
		Word32 lsf_wgts_fx[M];
		Word16 lsp_new_fx[M];
		Word16 lsf_new_q_fx = 18;
		Word16 lsp_new_q_fx;
		FOR( Word16 i = 0; i < M; i++ )
		{
		lsf_new_fx[i] = (Word32) ( lsf_new[i] * ( 1 << lsf_new_q_fx ) );
		tdm_lsfQ_PCh_fx[i] = (Word32) ( tdm_lsfQ_PCh[i] * ( 1 << 18 ) );
		IF( enc_dec == ENC )
		{
		lsf_wgts_fx[i] = (Word32) ( lsf_wgts[i] * ( 1 << 26 ) );
		}
		}
		/////////////////////////////////////////
		const Word32 *Beta_Q1bit_re_use_fx;
		IF( element_brate <= IVAS_13k2 )
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_13k2_fx;
		}
		ELSE IF( element_brate <= IVAS_16k4 )
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_16k4_fx;
		}
		ELSE IF( element_brate <= IVAS_32k )
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_24k4_32k_fx;
		}
		ELSE
		{
		Beta_Q1bit_re_use_fx = tdm_Beta_Q1bit_re_use_48k_fx;
		}

		IF( enc_dec == ENC )
		{
		tdm_SCh_LSF_intra_pred_one_bit_enc_fx( lsf_new_fx, tdm_lsfQ_PCh_fx, lsf_new_fx, tdm_LSF_MEAN_RE_USE_fx, lsf_wgts_fx, Beta_Q1bit_re_use_fx, beta_index );
		}
		ELSE /* DEC */
		{
		tdm_SCh_LSF_intra_pred_one_bit_dec_fx( tdm_lsfQ_PCh_fx, lsf_new_fx, tdm_LSF_MEAN_RE_USE_fx, Beta_Q1bit_re_use_fx, *beta_index );
		}

		tdm_SCh_LSF_intra_pred_tri_diag_mat_fx( lsf_new_fx, tdm_LSF_MEAN_RE_USE_IN_fx, tdm_LSF_MEAN_RE_USE_OUT_fx, tdm_RE_USE_adaptive_beta_prd_diag_3_fx );

		lsf2lsp_32_fx( lsf_new_fx, lsf_new_q_fx, lsp_new_fx, &lsp_new_q_fx, M, INT_FS_12k8 );

		FOR( Word16 i = 0; i < M; i++ )
		{
		lsf_new[i] = (float) lsf_new_fx[i] / ( 1 << lsf_new_q_fx );
		lsp_new[i] = (float) lsp_new_fx[i] / ( 1 << lsp_new_q_fx );
		}
		#else
		const float *Beta_Q1bit_re_use;

		if ( element_brate <= IVAS_13k2 )
		@@ -793,6 +1140,6 @@ void tdm_SCh_lsf_reuse(
		tdm_SCh_LSF_intra_pred_tri_diag_mat( lsf_new, tdm_LSF_MEAN_RE_USE_IN, tdm_LSF_MEAN_RE_USE_OUT, tdm_RE_USE_adaptive_beta_prd_diag_3 );

		lsf2lsp( lsf_new, lsp_new, M, INT_FS_12k8 );

		#endif
		return;
		}

lib_com/lsf_tools.c

+31 −0

Original line number	Diff line number	Diff line
		@@ -1615,6 +1615,37 @@ void lsp2lsf(
		return;
		}

		#ifdef IVAS_FLOAT_FIXED
		/-----------------------------------------------------------------------
		* lsf2lsp_32_fx()
		*
		* Transformation of LSFs to LSPs
		*
		* LSP are line spectral pairs in cosine domain (-1 to 1).
		* LSF are line spectral frequencies (0 to fs/2).
		-----------------------------------------------------------------------/

		void lsf2lsp_32_fx(
		const Word32 lsf_fx[], /* i : isf[m] normalized (range: 0<=val<=fs/2) */
		Word16 lsf_q_fx,
		Word16 lsp_fx[], /* o : isp[m] (range: -1<=val<1) */
		Word16 *lsp_q_fx,
		const Word16 m, /* i : LPC order */
		const Word32 Fs /* i : sampling frequency */
		)
		{
		Word16 i;

		/* convert LSFs to LSPs */
		FOR( i = 0; i < m; i++ )
		{
		lsp_fx[i] = getCosWord16R2( div_l( L_shr( lsf_fx[i], lsf_q_fx - 13 ), div_l( Fs, shl( 2, 1 ) ) ) );
		}
		*lsp_q_fx = 15;
		return;
		}
		#endif

		/-----------------------------------------------------------------------
		* lsf2lsp()
		*