Encoder functions fixed point conversion (2a08e40b) · Commits · SA4 / Audio / IVAS BASOP

lib_com/hq_tools_fx.c

+139 −0

Original line number	Diff line number	Diff line
		@@ -39,6 +39,7 @@
		#include "rom_com.h" /* Static table prototypes FIP version */
		#include "stl.h" /* required for wmc_tool */
		#include "prot_fx.h"
		#include "prot.h"
		#ifdef IVAS_FLOAT_FIXED
		#include "ivas_prot_fx.h"
		#endif
		@@ -1920,6 +1921,104 @@ Word16 get_nor_delta_hf_fx(
		}
		return add_bits_denv;
		}
		#ifdef IVAS_FLOAT_FIXED
		/-------------------------------------------------------------------
		* calc_nor_delta_hf()
		*
		*
		--------------------------------------------------------------------------/
		Word16 calc_nor_delta_hf_ivas_fx(
		BSTR_ENC_HANDLE hBstr, /* i/o: encoder bitstream handle */
		const Word32 t_audio, / i : transform-domain coefficients Qx*/
		Word16 ynrm, / i/o: norm indices */
		Word16 Rsubband, / i/o: sub-band bit allocation */
		const Word16 num_env_bands, /* i : Number coded envelope bands */
		const Word16 nb_sfm, /* i : Number of envelope bands */
		const Word16 sfmsize, / i : band length */
		const Word16 sfm_start, / i : Start index of bands */
		const Word16 core_sfm /* i : index of the end band for core */
		)
		{
		Word16 i;
		Word16 ynrm_t[44], normqlg2_t[44];
		Word16 delta, max_delta, min_delta, bitsforDelta, add_bits_denv;

		max_delta = -100;
		move16();
		calc_norm_fx( t_audio, 12, ynrm_t, normqlg2_t, 0, nb_sfm, sfmsize, sfm_start );
		add_bits_denv = 0;
		move16();
		FOR( i = num_env_bands; i < nb_sfm; ++i )
		{
		IF( Rsubband[i] != 0 )
		{
		delta = sub( ynrm_t[i], ynrm[i] );
		IF( delta > 0 )
		{
		delta = add( delta, 1 );
		}
		ELSE
		{
		delta = negate( delta );
		}
		if ( GT_16( delta, max_delta ) )
		{
		max_delta = delta;
		move16();
		}
		}
		}
		IF( GE_16( core_sfm, num_env_bands ) )
		{
		IF( LT_16( max_delta, 16 ) )
		{
		bitsforDelta = 2;
		move16();
		FOR( ; max_delta >= 2; max_delta >>= 1 )
		{
		bitsforDelta = add( bitsforDelta, 1 );
		}
		}
		ELSE
		{
		bitsforDelta = 5;
		move16();
		}
		max_delta = sub( shl( 1, sub( bitsforDelta, 1 ) ), 1 );
		min_delta = negate( add( max_delta, 1 ) );

		/* updating norm & storing delta norm */
		add_bits_denv = 2;
		move16();
		push_indice( hBstr, IND_DELTA_ENV_HQ, sub( bitsforDelta, 2 ), 2 );
		FOR( i = num_env_bands; i < nb_sfm; ++i )
		{
		IF( Rsubband[i] != 0 )
		{
		delta = sub( ynrm_t[i], ynrm[i] );
		IF( GT_16( delta, max_delta ) )
		{
		delta = max_delta;
		move16();
		}
		ELSE IF( LT_16( delta, min_delta ) )
		{
		delta = min_delta;
		move16();
		}
		push_indice( hBstr, IND_DELTA_ENV_HQ, delta - min_delta, bitsforDelta );
		ynrm[i] = add( ynrm[i], delta );
		move16();
		add_bits_denv = add( add_bits_denv, bitsforDelta );
		}
		}

		/* updating bit allocation */
		update_rsubband_fx( nb_sfm, Rsubband, add_bits_denv );
		}
		return add_bits_denv;
		}
		#endif
		/-------------------------------------------------------------------
		* calc_nor_delta_hf()
		*
		@@ -2555,9 +2654,49 @@ void enforce_zero_for_min_envelope_fx(
		}
		}

		return;
		}
		#ifdef IVAS_FLOAT_FIXED
		/--------------------------------------------------------------------------
		* apply_envelope()
		*
		* Apply spectral envelope with envelope adjustments
		--------------------------------------------------------------------------/

		void apply_envelope_enc_ivas_fx(
		const Word16 coeff, / i/o: Coded/noisefilled normalized spectrum Q12 */
		const Word16 norm, / i : Envelope Q0 */
		const Word16 num_sfm, /* i : Total number of bands Q0 */
		const Word16 sfm_start, / i : Sub band start indices Q0 */
		const Word16 sfm_end, / i : Sub band end indices Q0 */
		Word32 coeff_out / o : coded/noisefilled spectrum Q12 */
		)
		{
		Word16 i;
		Word16 sfm;
		UWord16 lsb;
		Word32 normq;
		Word32 L_tmp;

		FOR( sfm = 0; sfm < num_sfm; sfm++ )
		{
		normq = dicn_fx[norm[sfm]];
		move16();

		FOR( i = sfm_start[sfm]; i < sfm_end[sfm]; i++ )
		{
		/coeff_out[i] = coeff[i]normq; */
		Mpy_32_16_ss( normq, coeff[i], &L_tmp, &lsb );
		coeff_out[i] = L_add( L_shl( L_tmp, 1 ), L_shr( lsb, 15 ) );
		move32(); /* Q12 (14+12+1-16)+1 */
		}
		}


		return;
		}

		#endif
		/--------------------------------------------------------------------------
		* apply_envelope()
		*

lib_com/ivas_dirac_com.c

+11 −5

Original line number	Diff line number	Diff line
		@@ -1372,12 +1372,18 @@ void computeDiffuseness_fixed(

		min_q_shift2 = Q31;
		move16();
		min_q_shift2 = s_min( min_q_shift2, getScaleFactor32( buffer_energy, i_mult( DIRAC_NUM_DIMS, i_mult( DIRAC_NO_COL_AVG_DIFF, num_freq_bands ) ) ) );
		min_q_shift2 = find_guarded_bits_fx( DIRAC_NO_COL_AVG_DIFF );
		FOR( i = 0; i < DIRAC_NUM_DIMS; i++ )
		{
		FOR( j = 0; j < DIRAC_NO_COL_AVG_DIFF; j++ )
		{
		min_q_shift2 = s_min( min_q_shift2, getScaleFactor32( buffer_intensity[i][j], num_freq_bands ) );
		}
		}
		min_q_shift2 = sub( min_q_shift2, find_guarded_bits_fx( DIRAC_NO_COL_AVG_DIFF ) );

		q_ene = add( q_factor_energy[0], min_q_shift1 );
		move16();
		q_intensity = sub( q_factor_intensity[0], min_q_shift2 );
		q_intensity = add( q_factor_intensity[0], min_q_shift2 );
		move16();

		FOR( i = 0; i < DIRAC_NO_COL_AVG_DIFF; ++i )
		@@ -1403,13 +1409,13 @@ void computeDiffuseness_fixed(
		q_ene = s_min( q_ene, q_tmp );

		/* Intensity slow */
		q_tmp = sub( q_factor_intensity[i], min_q_shift2 );
		q_tmp = add( q_factor_intensity[i], min_q_shift2 );
		FOR( j = 0; j < DIRAC_NUM_DIMS; ++j )
		{
		p_tmp = buffer_intensity[j][i];
		FOR( k = 0; k < num_freq_bands; k++ )
		{
		tmp = L_shr( p_tmp[k], min_q_shift2 );
		tmp = L_shl( p_tmp[k], min_q_shift2 );
		IF( LT_16( q_intensity, q_tmp ) )
		{
		intensity_slow[add( i_mult( j, num_freq_bands ), k )] = L_add( intensity_slow[add( i_mult( j, num_freq_bands ), k )], L_shr( tmp, sub( q_tmp, q_intensity ) ) );

lib_com/ivas_prot.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -80,15 +80,29 @@ void copy_encoder_config(
		const int16_t flag_all /* i : flag 1==update all, 0=partial update */
		);

		#ifndef IVAS_FLOAT_FIXED
		void ivas_write_format(
		Encoder_Struct st_ivas / i/o: IVAS encoder structure */
		);
		#else
		void ivas_write_format_fx( /* i/o: IVAS encoder structure */
		Encoder_Struct *st_ivas
		);
		#endif

		#ifndef IVAS_FLOAT_FIXED
		void ivas_write_format_sid(
		const IVAS_FORMAT ivas_format, /* i : IVAS format */
		const int16_t element_mode, /* i : element bitrate */
		BSTR_ENC_HANDLE hBstr /* i/o: encoder bitstream handle */
		);
		#else
		void ivas_write_format_sid_fx(
		const IVAS_FORMAT ivas_format, /* i : IVAS format */
		const Word16 element_mode, /* i : element bitrate */
		BSTR_ENC_HANDLE hBstr /* i/o: encoder bitstream handle */
		);
		#endif

		ivas_error create_sce_enc(
		Encoder_Struct st_ivas, / i/o: IVAS encoder structure */

lib_com/logqnorm_fx.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -294,8 +294,6 @@ void calc_norm_ivas_fx(
		Word16 tmp;

		set16_fx( norm, 0, start_band );

		// logqnorm_ivas_fx( &x_fx[band_start[start_band]], 12, &x[band_start[start_band]], &nrm, 32, band_len[start_band], thren_HQ );
		logqnorm_ivas_fx( &x_fx[band_start[start_band]], 12, &nrm, 32, band_len[start_band], thren_HQ_fx );
		norm[start_band] = nrm;
		move16();

lib_com/prot_fx.h

+37 −3

Original line number	Diff line number	Diff line
		@@ -675,7 +675,19 @@ Word16 calc_nor_delta_hf_fx(
		const Word16 sfm_start, / i : Start index of bands */
		const Word16 core_sfm /* i : index of the end band for core */
		);

		#ifdef IVAS_FLOAT_FIXED
		Word16 calc_nor_delta_hf_ivas_fx(
		BSTR_ENC_HANDLE hBstr, /* i/o: encoder bitstream handle */
		const Word32 t_audio, / i : transform-domain coefficients Qx*/
		Word16 ynrm, / i/o: norm indices */
		Word16 Rsubband, / i/o: sub-band bit allocation */
		const Word16 num_env_bands, /* i : Number coded envelope bands */
		const Word16 nb_sfm, /* i : Number of envelope bands */
		const Word16 sfmsize, / i : band length */
		const Word16 sfm_start, / i : Start index of bands */
		const Word16 core_sfm /* i : index of the end band for core */
		);
		#endif
		void hq_bwe_fx(
		const Word16 HQ_mode, /* i : HQ mode */
		Word32 coeff_out1, / i/o: BWE i & temporary buffer */
		@@ -717,7 +729,14 @@ void enforce_zero_for_min_envelope_fx(
		const Word16 sfm_start, / i : Sub band start indices Q0 */
		const Word16 sfm_end / i : Sub band end indices Q0 */
		);

		void apply_envelope_enc_ivas_fx(
		const Word16 coeff, / i/o: Coded/noisefilled normalized spectrum Q12 */
		const Word16 norm, / i : Envelope Q0 */
		const Word16 num_sfm, /* i : Total number of bands Q0 */
		const Word16 sfm_start, / i : Sub band start indices Q0 */
		const Word16 sfm_end, / i : Sub band end indices Q0 */
		Word32 coeff_out / o : coded/noisefilled spectrum Q12 */
		);
		void apply_envelope_fx(
		const Word16 coeff, / i : Coded/noisefilled normalized spectrum Q12 */
		const Word16 norm, / i : Envelope */
		@@ -4660,7 +4679,16 @@ void fine_gain_quant_fx(
		Word16 fg_pred, / i/o: Predicted gains / Corrected gains Q12 */
		const Word16 gopt / i : Optimal gains Q12 */
		);

		#ifdef IVAS_FLOAT_FIXED
		void fine_gain_quant_ivas_fx(
		BSTR_ENC_HANDLE hBstr, /* i/o: encoder bitstream handle */
		const Word16 ord, / i : Indices for energy order */
		const Word16 num_sfm, /* i : Number of bands */
		const Word16 gain_bits, / i : Gain adjustment bits per sub band */
		Word16 fg_pred, / i/o: Predicted gains / Corrected gains Q12 */
		const Word16 gopt / i : Optimal gains Q12 */
		);
		#endif
		void get_max_pulses_fx(
		const Word16 band_start, / i : Sub band start indices */
		const Word16 band_end, / i : Sub band end indices */
		@@ -10531,4 +10559,10 @@ void writeTCXparam_fx(
		Word16 p_param[2], /* i/o: pointer to parameters from previous bs writing */
		const Word16 target_bitsTCX10[2],
		const Word16 pre_past_flag );

		void calculate_hangover_attenuation_gain_ivas_fx(
		Encoder_State st, / i : encoder state structure */
		Word16 att, / o : attenuation factor */
		const Word16 vad_hover_flag /* i : VAD hangover flag */
		);
		#endif

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