Few functions in ivas_core_dec converted to fixed point. (ae7628b3) · Commits · SA4 / Audio / IVAS BASOP

lib_com/core_com_config.c

+8 −45

Original line number	Diff line number	Diff line
		@@ -477,6 +477,14 @@ Word16 getMdctWindowLength_fx(
		*
		*
		-------------------------------------------------------------------/
		#ifdef IVAS_FLOAT_FIXED
		Word16 sr2fscale_fx(
		const Word32 sr_core /* i : internal sampling rate */
		)
		{
		return (Word16) ( ( FSCALE_DENOM * sr_core ) / 12800 );
		}
		#endif

		int16_t sr2fscale(
		const int32_t sr_core /* i : internal sampling rate */
		@@ -486,51 +494,6 @@ int16_t sr2fscale(
		return (int16_t) ( ( FSCALE_DENOM * sr_core ) / 12800 );
		}

		Word16 sr2fscale_fx(
		const Word32 sr_core /* i : internal sampling rate */
		)
		{
		Word16 fscale;

		SWITCH( sr_core )
		{
		case 8000:
		fscale = ( FSCALE_DENOM * 8000 ) / 12800;
		move16();
		BREAK;

		case 12800:
		fscale = FSCALE_DENOM;
		move16();
		BREAK;

		case 16000:
		fscale = ( FSCALE_DENOM * 16000 ) / 12800;
		move16();
		BREAK;

		case 25600:
		fscale = ( FSCALE_DENOM * 25600 ) / 12800;
		move16();
		BREAK;

		case 32000:
		fscale = ( FSCALE_DENOM * 32000 ) / 12800;
		move16();
		BREAK;

		case 48000:
		fscale = ( FSCALE_DENOM * 48000 ) / 12800;
		move16();
		BREAK;

		default:
		assert( 0 );
		fscale = 0; /* just to avoid compiler warning */
		BREAK;
		}
		return fscale;
		}
		/-------------------------------------------------------------------
		* getCoreSamplerateMode2_flt()
		*

lib_com/ivas_prot_fx.h

+29 −0

Original line number	Diff line number	Diff line
		@@ -489,4 +489,33 @@ void ivas_ism_metadata_sid_dec_fx(
		ISM_METADATA_HANDLE hIsmMeta[], /* i/o: ISM metadata handles */
		Word16 nb_bits_metadata[] /* o : number of metadata bits */
		);

		void td_stereo_param_updt_fx(
		const Word16 lsp_old_PCh[], /* i : primary channel old LSPs */
		const Word16 lsf_old_PCh[], /* i : primary channel old LSFs */
		const Word16 pitch_buf_PCh[], /* i : primary channel pitch buffer */
		Word16 tdm_lspQ_PCh[], /* o : Q LSPs for primary channel */
		Word16 tdm_lsfQ_PCh[], /* o : Q LSFs for primary channel */
		Word16 tdm_Pri_pitch_buf[], /* o : pitch values for primary channel */
		const Word16 flag_ACELP16k, /* i : ACELP@16kHz flag */
		const Word16 tdm_use_IAWB_Ave_lpc, /* i : flag to indicate the usage of mean inactive LP coefficients */
		Word16 Q_var );

		void updateBuffersForDmxMdctStereo_fx(
		CPE_DEC_HANDLE hCPE, /* i/o: CPE handle */
		const Word16 output_frame, /* i : output frame length */
		Word32 output0_fx[], /* i/o: decoder output */
		Word32 output1_fx[], /* i/o: decoder output */
		Word16 synth_fx[CPE_CHANNELS][L_FRAME48k] /* i/o: decoder synthesis */
		);

		void stereo_cng_compute_PScorr_fx(
		Word32 output_fx0[], /* i : Output signal */
		Word32 output_fx1[], /* i : Output signal */
		Word16 output_Q,
		Word32 c_PS_LT_fx, / i/o: Correlation */
		Word16 Q_c_PS_LT_fx,
		const Word16 L_frame_0, /* i : L_frame channel 0 */
		const Word16 L_frame_1 /* i : L_frame channel 1 */
		);
		#endif
		No newline at end of file

lib_com/ivas_sba_config.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -225,7 +225,7 @@ Word16 ivas_sba_get_order_fx(
		}
		ELSE
		{
		sba_order = sub( Sqrt16( nb_channels, &exp ), ONE_IN_Q15 ); // 15 - exp
		sba_order = sub( Sqrt16( nb_channels, &exp ), MAX16B); // 15 - exp
		assert( ( EQ_16( mult( add( sba_order, 1 ), add( sba_order, 1 ) ), nb_channels ) ) && "Number of channels not supported in SBA!" );
		}

lib_com/ivas_stereo_td_bit_alloc.c

+54 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,9 @@
		#include "ivas_cnst.h"
		#include "prot.h"
		#include "wmc_auto.h"
		#ifdef IVAS_FLOAT_FIXED
		#include "prot_fx2.h"
		#endif


		/-------------------------------------------------------------------
		@@ -484,7 +487,58 @@ void td_stereo_param_updt(
		return;
		}

		#ifdef IVAS_FLOAT_FIXED

		void td_stereo_param_updt_fx(
		const Word16 lsp_old_PCh_fx[], /* i : primary channel old LSPs Q15*/
		const Word16 lsf_old_PCh_fx[], /* i : primary channel old LSFs Qx2.56*/
		const Word16 pitch_buf_PCh_fx[], /* i : primary channel pitch buffer Q_var*/
		Word16 tdm_lspQ_PCh_fx[], /* o : Q LSPs for primary channel Q15*/
		Word16 tdm_lsfQ_PCh_fx[], /* o : Q LSFs for primary channel Qx2.56*/
		Word16 tdm_Pri_pitch_buf_fx[], /* o : pitch values for primary channel Q_var */
		const Word16 flag_ACELP16k, /* i : ACELP@16kHz flag */
		const Word16 tdm_use_IAWB_Ave_lpc, /* i : flag to indicate the usage of mean inactive LP coefficients */
		Word16 Q_var )
		{
		Word16 i;
		/* Copy some primary channel information into the secondary channel structure for later usage */
		IF( tdm_use_IAWB_Ave_lpc == 1 )
		{
		/not being assert/
		Copy( IAWB_Ave_fx, tdm_lsfQ_PCh_fx, M );
		lsf2lsp_fx( tdm_lsfQ_PCh_fx, tdm_lspQ_PCh_fx, M, INT_FS_12k8 );
		}
		ELSE IF( flag_ACELP16k == 1 )
		{
		Copy( lsp_old_PCh_fx, tdm_lspQ_PCh_fx, M );
		lsp_convert_poly_fx( tdm_lspQ_PCh_fx, L_FRAME, 0 );
		lsp2lsf_fx( tdm_lspQ_PCh_fx, tdm_lsfQ_PCh_fx, M, INT_FS_12k8 );
		}
		ELSE
		{
		Copy( lsp_old_PCh_fx, tdm_lspQ_PCh_fx, M );
		Copy( lsf_old_PCh_fx, tdm_lsfQ_PCh_fx, M );
		}

		/* This is only to keep the buffer up-to-date */
		Word16 mult_factor = float_to_fix16( 0.8f, 15 );

		IF( flag_ACELP16k == 1 )
		{
		FOR( i = 0; i < NB_SUBFR; i++ )
		{
		tdm_Pri_pitch_buf_fx[i] = mult( pitch_buf_PCh_fx[i], mult_factor );
		tdm_Pri_pitch_buf_fx[i] = max( tdm_Pri_pitch_buf_fx[i], float_to_fix16( PIT_MIN, Q_var ) );
		}
		}
		ELSE
		{
		Copy( pitch_buf_PCh_fx, tdm_Pri_pitch_buf_fx, NB_SUBFR );
		}

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

lib_com/prot.h

+6 −2

Original line number	Diff line number	Diff line
		@@ -9752,11 +9752,15 @@ int16_t getRestrictedMode(

		int16_t getMdctWindowLength(
		const int16_t fscale );

		#ifdef IVAS_FLOAT_FIXED
		Word16 sr2fscale(
		const Word32 sr_core /* i : internal sampling rate */
		);
		#else
		int16_t sr2fscale(
		const int32_t sr_core /* i : internal sampling rate */
		);

		#endif
		int32_t getCoreSamplerateMode2_flt(
		const int16_t element_mode, /* i : IVAS element mode */
		const int32_t total_brate, /* i : total bitrate */

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