remove unused function ivas_qmetadata_entropy_encode_diffuseness_hr() (74ca4fbe) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_enc/ivas_qmetadata_enc.c

+1 −100

Original line number	Diff line number	Diff line
		@@ -49,8 +49,8 @@

		#ifdef DEBUG_MODE_QMETADATA
		static float direction_distance( float elevation[DIRAC_MAX_NBANDS][MAX_PARAM_SPATIAL_SUBFRAMES], float azimuth[DIRAC_MAX_NBANDS][MAX_PARAM_SPATIAL_SUBFRAMES], IVAS_QDIRECTION *q_direction, const int16_t dim1, const int16_t dim2, float mat_dist[DIRAC_MAX_NBANDS][MAX_PARAM_SPATIAL_SUBFRAMES] );
		#endif

		#endif
		static void ivas_qmetadata_quantize_diffuseness_nrg_ratios( IVAS_QMETADATA_HANDLE hQMetaData, int16_t needed_bits, int16_t nbits_diff, int16_t *dfRatioBits, const int16_t hodirac_flag );

		static int16_t ivas_qmetadata_entropy_encode_diffuseness( BSTR_ENC_HANDLE hMetaData, IVAS_QDIRECTION q_direction, uint16_t diffuseness_index_max_ec_frame );
		@@ -115,8 +115,6 @@ static void transform_azimuth_dir2( IVAS_QMETADATA_HANDLE hQMetaData, int16_t *d

		static int16_t calc_var_azi( const IVAS_QDIRECTION q_direction, const int16_t diffuseness_index_max_ec_frame, const float avg_azimuth, float avg_azimuth_out );

		static int16_t ivas_qmetadata_entropy_encode_diffuseness_hr( BSTR_ENC_HANDLE hMetaData, IVAS_QDIRECTION q_direction, uint16_t diffuseness_index_max_ec_frame );

		static void ivas_qmetadata_quantize_diffuseness_nrg_ratios_hr_512( IVAS_QMETADATA_HANDLE hQMetaData, int16_t *needed_bits, const int16_t bits_dir_hr, BSTR_ENC_HANDLE hMetaData );

		static int16_t encode_surround_coherence_hr( IVAS_QMETADATA *hQMetaData, BSTR_ENC_HANDLE hMetaData );
		@@ -1454,103 +1452,6 @@ static void ivas_qmetadata_quantize_diffuseness_nrg_ratios_hr_512(
		}


		/*-------------------------------------------------------------------------
		* ivas_qmetadata_entropy_encode_diffuseness()
		*
		* encode diffuseness
		------------------------------------------------------------------------/

		static int16_t ivas_qmetadata_entropy_encode_diffuseness_hr(
		BSTR_ENC_HANDLE hMetaData,
		IVAS_QDIRECTION *q_direction,
		uint16_t *diffuseness_index_max_ec_frame )
		{
		int16_t start_bit_pos;
		int16_t diffuseness_bits_raw;
		int16_t b;
		int16_t min_diffuseness_m_index, max_diffuseness_m_index;
		int16_t nbands;
		int16_t start_band;

		nbands = q_direction->cfg.nbands;
		start_band = q_direction->cfg.start_band;

		start_bit_pos = hMetaData->nb_bits_tot;

		if ( nbands == 1 )
		{
		/* If there is only one band, diffuseness should be coded directly as raw with no signaling. */
		push_next_indice( hMetaData, q_direction->band_data[0].energy_ratio_index[0], MASA_BITS_ER_HR );
		*diffuseness_index_max_ec_frame = 10;
		return ( hMetaData->nb_bits_tot - start_bit_pos );
		}

		/* compute the number of raw coding bits */
		diffuseness_bits_raw = 0;
		for ( b = start_band; b < nbands; b++ )
		{
		diffuseness_bits_raw += ivas_qmetadata_encode_quasi_uniform_length( q_direction->band_data[b].energy_ratio_index[0], HR_MASA_ER_LEVELS );
		}

		min_diffuseness_m_index = q_direction->band_data[start_band].energy_ratio_index[0];
		max_diffuseness_m_index = q_direction->band_data[start_band].energy_ratio_index[0];

		for ( b = start_band; b < nbands; b++ )
		{
		if ( q_direction->band_data[b].energy_ratio_index[0] < min_diffuseness_m_index )
		{
		min_diffuseness_m_index = q_direction->band_data[b].energy_ratio_index[0];
		}

		if ( q_direction->band_data[b].energy_ratio_index[0] > max_diffuseness_m_index )
		{
		max_diffuseness_m_index = q_direction->band_data[b].energy_ratio_index[0];
		}
		}

		/* Use similarity coding approach or raw coding when there is a low number of bands. */
		/* one bit is used to indicate whether diffuseness values are entropy coded or coded raw */
		if ( min_diffuseness_m_index == max_diffuseness_m_index ) /* all values are equal */
		{
		push_next_indice( hMetaData, 0, 1 ); /* dif_use_raw_coding */
		push_next_indice( hMetaData, 1, 1 ); /* dif_have_unique_value */
		ivas_qmetadata_encode_quasi_uniform( hMetaData, min_diffuseness_m_index, HR_MASA_ER_LEVELS ); /* dif_unique_value */
		}
		else if ( min_diffuseness_m_index + 1 == max_diffuseness_m_index ) /* only two consecutive values are present */
		{
		push_next_indice( hMetaData, 0, 1 ); /* dif_use_raw_coding */
		push_next_indice( hMetaData, 0, 1 ); /* dif_have_unique_value */
		ivas_qmetadata_encode_quasi_uniform( hMetaData, min_diffuseness_m_index, HR_MASA_ER_LEVELS - 1 ); /* dif_min_value */

		for ( b = start_band; b < nbands; b++ )
		{
		push_next_indice( hMetaData, q_direction->band_data[b].energy_ratio_index[0] - min_diffuseness_m_index, 1 ); /* dif_bit_offset_values */
		}
		}
		else /* raw coding */
		{
		push_next_indice( hMetaData, 1, 1 ); /* dif_use_raw_coding */

		for ( b = start_band; b < nbands; b++ )
		{
		ivas_qmetadata_encode_quasi_uniform( hMetaData, q_direction->band_data[b].energy_ratio_index[0], HR_MASA_ER_LEVELS ); /* dif_values */
		}
		}

		*diffuseness_index_max_ec_frame = 10;
		/* adaptively select the diffuseness_index_max_ec threshold */
		if ( min_diffuseness_m_index > 10 )
		{
		*diffuseness_index_max_ec_frame = HR_MASA_ER_LEVELS - 1;
		}

		#ifdef DEBUGGING
		assert( ( hMetaData->nb_bits_tot - start_bit_pos ) <= 1 + diffuseness_bits_raw );
		#endif
		return ( hMetaData->nb_bits_tot - start_bit_pos );
		}


		/*-------------------------------------------------------------------------
		* ivas_qmetadata_quantize_diffuseness_nrg_ratios()
		*