Convert JBM to float processing (ff142679) · Commits · IVAS Codec Public Collaboration / IVAS Codec

apps/decoder.c

+154 −9

Original line number	Diff line number	Diff line
		@@ -1231,7 +1231,8 @@ static ivas_error initOnFirstGoodFrame(
		/* Open audio writer and write all previously skipped bad frames now that frame size is known */
		if ( ( error = AudioFileWriter_open( ppAfWriter, arg.outputWavFilename, arg.output_Fs, *pNumOutChannels
		#ifdef FLOAT_INTERFACE_DEC_REND
		, arg.outputFloatFile
		,
		arg.outputFloatFile
		#endif
		) ) != IVAS_ERR_OK )
		{
		@@ -1910,10 +1911,20 @@ static ivas_error decodeVoIP(
		bool decodedGoodFrame = false;
		int16_t numInitialBadFrames = 0; /* Number of bad frames received until first good frame is decoded */
		int16_t nOutChannels = 0;
		#ifdef FLOAT_INTERFACE_JBM
		int16_t nOutSamples = 0;
		#endif
		MasaFileWriter *masaWriter = NULL;
		uint16_t numObj = 0;

		#ifdef FLOAT_INTERFACE_JBM
		int16_t audioDecBufInt = NULL; / Buffer for receiving audio from decoder via int interface. Packed. */
		float audioDecBufFloat = NULL; / Buffer for receiving audio from decoder via float interface. Packed. */
		int16_t audioWriteBufInt = NULL; / Buffer for writing audio to int wav/pcm files. Interleaved. */
		float audioWriteBufFloat = NULL; / Buffer for reading audio to float wav files. Interleaved. */
		#else
		int16_t pcmBuf[MAX_OUTPUT_PCM_BUFFER_SIZE];
		#endif
		AudioFileWriter *afWriter = NULL;
		#ifdef SUPPORT_JBM_TRACEFILE
		JbmTraceFileWriter *jbmTraceWriter = NULL;
		@@ -2023,6 +2034,44 @@ static ivas_error decodeVoIP(
		fprintf( stdout, "\n-- Start the decoder (quiet mode) --\n\n" );
		}

		#ifdef FLOAT_INTERFACE_JBM
		/------------------------------------------------------------------------------------------
		* Allocate output audio buffers
		------------------------------------------------------------------------------------------/

		/* TODO(sgi): This is duplicated from decodeG192 */
		if ( arg.outputFormat == IVAS_DEC_OUTPUT_EXT )
		{
		nOutChannels = 4; /* Currently allocating max expected / / TODO(sgi): Get this from decoder before GetSamples() is called - then EXT is no longer a special case */
		}
		else
		{
		if ( ( error = IVAS_DEC_GetNumOutputChannels( hIvasDec, &nOutChannels ) ) != IVAS_ERR_OK )
		{
		goto cleanup;
		}
		}
		nOutSamples = arg.output_Fs / 50; /* TODO(sgi): Get from API */

		if ( arg.useInt16Interface )
		{
		audioDecBufInt = malloc( nOutChannels * nOutSamples * sizeof( int16_t ) );
		}
		else
		{
		audioDecBufFloat = malloc( nOutChannels * nOutSamples * sizeof( float ) );
		}

		if ( arg.outputFloatFile )
		{
		audioWriteBufFloat = malloc( nOutChannels * nOutSamples * sizeof( float ) );
		}
		else
		{
		audioWriteBufInt = malloc( nOutChannels * nOutSamples * sizeof( int16_t ) );
		}
		#endif

		#ifdef WMOPS
		reset_stack();
		reset_wmops();
		@@ -2034,7 +2083,9 @@ static ivas_error decodeVoIP(

		while ( 1 )
		{
		#ifndef FLOAT_INTERFACE_JBM
		int16_t nOutSamples = 0;
		#endif

		/* read all packets with a receive time smaller than the system time */
		while ( nextPacketRcvTime_ms <= systemTime_ms )
		@@ -2084,8 +2135,42 @@ static ivas_error decodeVoIP(
		break;
		}

		#ifndef FLOAT_INTERFACE_JBM
		nOutSamples = (int16_t) ( arg.output_Fs / 50 );
		#endif

		#ifdef FLOAT_INTERFACE_JBM
		if ( arg.useInt16Interface )
		{
		/* decode and get samples */
		if ( ( error = IVAS_DEC_VoIP_GetSamplesInt( hIvasDec, nOutSamples, audioDecBufInt, systemTime_ms
		#ifdef SUPPORT_JBM_TRACEFILE
		,
		writeJbmTraceFileFrameWrapper,
		jbmTraceWriter
		#endif
		) ) != IVAS_ERR_OK )
		{
		fprintf( stderr, "\nError in IVAS_DEC_VoIP_GetSamples: %s\n", IVAS_DEC_GetErrorMessage( error ) );
		goto cleanup;
		}
		}
		else
		{
		/* decode and get samples */
		if ( ( error = IVAS_DEC_VoIP_GetSamplesFloat( hIvasDec, nOutSamples, audioDecBufFloat, systemTime_ms
		#ifdef SUPPORT_JBM_TRACEFILE
		,
		writeJbmTraceFileFrameWrapper,
		jbmTraceWriter
		#endif
		) ) != IVAS_ERR_OK )
		{
		fprintf( stderr, "\nError in IVAS_DEC_VoIP_GetSamples: %s\n", IVAS_DEC_GetErrorMessage( error ) );
		goto cleanup;
		}
		}
		#else
		/* decode and get samples */
		if ( ( error = IVAS_DEC_VoIP_GetSamples( hIvasDec, nOutSamples, pcmBuf, systemTime_ms
		#ifdef SUPPORT_JBM_TRACEFILE
		@@ -2098,6 +2183,7 @@ static ivas_error decodeVoIP(
		fprintf( stderr, "\nError in IVAS_DEC_VoIP_GetSamples: %s\n", IVAS_DEC_GetErrorMessage( error ) );
		goto cleanup;
		}
		#endif


		/* write JBM Offset file entry */
		@@ -2162,14 +2248,48 @@ static ivas_error decodeVoIP(
		if ( delayNumSamples < nOutSamples )
		{
		#ifdef FLOAT_INTERFACE_DEC_REND
		if ( ( error = AudioFileWriter_writeFromInt16( afWriter, &pcmBuf[delayNumSamples * nOutChannels], nOutSamples * nOutChannels - ( delayNumSamples * nOutChannels ) ) ) != IVAS_ERR_OK )
		/* TODO(sgi): This is a duplicate from decodeG192 */
		if ( arg.outputFloatFile )
		{
		if ( arg.useInt16Interface )
		{
		copyBufferPackedIntToInterleavedFloat( audioDecBufInt, nOutSamples, audioWriteBufFloat, nOutSamples, nOutChannels );
		}
		else
		{
		copyBufferPackedFloatToInterleavedFloat( audioDecBufFloat, nOutSamples, audioWriteBufFloat, nOutSamples, nOutChannels );
		}

		if ( ( error = AudioFileWriter_writeFromFloat( afWriter, &audioWriteBufFloat[delayNumSamples * nOutChannels], nOutSamples * nOutChannels - ( delayNumSamples * nOutChannels ) ) ) != IVAS_ERR_OK )
		{
		fprintf( stderr, "\nOutput audio file writer error\n" );
		goto cleanup;
		}
		}
		else
		{
		if ( arg.useInt16Interface )
		{
		copyBufferPackedIntToInterleavedInt( audioDecBufInt, nOutSamples, audioWriteBufInt, nOutSamples, nOutChannels );
		}
		else
		{
		copyBufferPackedFloatToInterleavedInt( audioDecBufFloat, nOutSamples, audioWriteBufInt, nOutSamples, nOutChannels, float2int );
		}

		if ( ( error = AudioFileWriter_writeFromInt16( afWriter, &audioWriteBufInt[delayNumSamples * nOutChannels], nOutSamples * nOutChannels - ( delayNumSamples * nOutChannels ) ) ) != IVAS_ERR_OK )
		{
		fprintf( stderr, "\nOutput audio file writer error\n" );
		goto cleanup;
		}
		}
		#else
		if ( ( error = AudioFileWriter_write( afWriter, &pcmBuf[delayNumSamples * nOutChannels], nOutSamples * nOutChannels - ( delayNumSamples * nOutChannels ) ) ) != IVAS_ERR_OK )
		#endif
		{
		fprintf( stderr, "\nOutput audio file writer error\n" );
		goto cleanup;
		}
		#endif
		delayNumSamples = 0;
		}
		else
		@@ -2195,16 +2315,34 @@ static ivas_error decodeVoIP(
		}

		/* add zeros at the end to have equal length of synthesized signals */
		memset( pcmBuf, 0, delayNumSamples_orig * nOutChannels * sizeof( int16_t ) );
		#ifdef FLOAT_INTERFACE_DEC_REND
		if ( ( error = AudioFileWriter_writeFromInt16( afWriter, pcmBuf, delayNumSamples_orig * nOutChannels ) ) != IVAS_ERR_OK )
		/* TODO(sgi): This is a duplicate from decodeG192 */
		if ( arg.outputFloatFile )
		{
		memset( audioWriteBufFloat, 0, delayNumSamples_orig * nOutChannels * sizeof( float ) );
		if ( ( error = AudioFileWriter_writeFromFloat( afWriter, audioWriteBufFloat, delayNumSamples_orig * nOutChannels ) ) != IVAS_ERR_OK )
		{
		fprintf( stderr, "\nError writing output file: %s\n", ivas_error_to_string( error ) );
		goto cleanup;
		}
		}
		else
		{
		memset( audioWriteBufInt, 0, delayNumSamples_orig * nOutChannels * sizeof( int16_t ) );
		if ( ( error = AudioFileWriter_writeFromInt16( afWriter, audioWriteBufInt, delayNumSamples_orig * nOutChannels ) ) != IVAS_ERR_OK )
		{
		fprintf( stderr, "\nError writing output file: %s\n", ivas_error_to_string( error ) );
		goto cleanup;
		}
		}
		#else
		memset( pcmBuf, 0, delayNumSamples_orig * nOutChannels * sizeof( int16_t ) );
		if ( ( error = AudioFileWriter_write( afWriter, pcmBuf, delayNumSamples_orig * nOutChannels ) ) != IVAS_ERR_OK )
		#endif
		{
		fprintf( stderr, "\nError writing output file: %s\n", ivas_error_to_string( error ) );
		goto cleanup;
		}
		#endif

		/------------------------------------------------------------------------------------------
		* Printouts after decoding has finished
		@@ -2223,6 +2361,13 @@ static ivas_error decodeVoIP(

		cleanup:

		#ifdef FLOAT_INTERFACE_DEC_REND
		free( audioDecBufInt );
		free( audioDecBufFloat );
		free( audioWriteBufInt );
		free( audioWriteBufFloat );
		#endif

		EVS_RTPDUMP_DEPACKER_close( &rtpdumpDepacker );
		AudioFileWriter_close( &afWriter );
		JbmOffsetFileWriter_close( &jbmOffsetWriter );

lib_com/options.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -174,6 +174,9 @@
		// #define FLOAT_INTERFACE_DEC_REND_DBG_OOB_WRITES
		#endif

		#define FLOAT_INTERFACE_JBM


		/* ################## End DEVELOPMENT switches ######################### */
		/* clang-format on */
		#endif

lib_dec/jbm_pcmdsp_apa.c

+141 −15

Original line number	Diff line number	Diff line
		@@ -66,7 +66,11 @@
		struct apa_state_t
		{
		/* output buffer */
		#ifdef FLOAT_INTERFACE_JBM
		float *buf_out;
		#else
		int16_t *buf_out;
		#endif
		uint16_t buf_out_capacity;
		uint16_t l_buf_out;

		@@ -123,15 +127,71 @@ static float apa_corrEnergy2dB( float energy, uint16_t corr_len );

		static float apa_getQualityIncreaseForLowEnergy( float energydB );

		static bool logarithmic_search( const apa_state_t ps, const int16_t signal, int16_t s_start, uint16_t inlen, uint16_t offset, uint16_t fixed_pos, uint16_t corr_len, uint16_t wss, uint16_t css, int16_t *synchpos );
		static bool logarithmic_search(
		const apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float *signal,
		#else
		const int16_t *signal,
		#endif
		int16_t s_start,
		uint16_t inlen,
		uint16_t offset,
		uint16_t fixed_pos,
		uint16_t corr_len,
		uint16_t wss,
		uint16_t css,
		int16_t *synchpos );

		static bool find_synch( apa_state_t ps, const int16_t in, uint16_t l_in, int16_t s_start, uint16_t s_len, int16_t fixed_pos, uint16_t corr_len, uint16_t offset, float energy, float quality, int16_t *synch_pos );
		static bool find_synch( apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float *in,
		#else
		const int16_t *in,
		#endif
		uint16_t l_in,
		int16_t s_start,
		uint16_t s_len,
		int16_t fixed_pos,
		uint16_t corr_len,
		uint16_t offset,
		float *energy,
		float *quality,
		int16_t *synch_pos );

		static bool copy_frm( apa_state_t ps, const int16_t frm_in[], int16_t frm_out[], uint16_t l_frm_out );
		static bool copy_frm( apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float frm_in[],
		float frm_out[],
		#else
		const int16_t frm_in[],
		int16_t frm_out[],
		#endif
		uint16_t *l_frm_out );

		static bool shrink_frm( apa_state_t ps, const int16_t frm_in[], uint16_t maxScaling, int16_t frm_out[], uint16_t l_frm_out );
		static bool shrink_frm( apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float frm_in[],
		#else
		const int16_t frm_in[],
		#endif
		uint16_t maxScaling,
		#ifdef FLOAT_INTERFACE_JBM
		float frm_out[],
		#else
		int16_t frm_out[],
		#endif
		uint16_t *l_frm_out );

		static bool extend_frm( apa_state_t ps, const int16_t frm_in[], int16_t frm_out[], uint16_t l_frm_out );
		static bool extend_frm( apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float frm_in[],
		float frm_out[],
		#else
		const int16_t frm_in[],
		int16_t frm_out[],
		#endif
		uint16_t *l_frm_out );


		/---------------------------------------------------------------------
		@@ -455,15 +515,27 @@ bool apa_exit(
		*/
		uint8_t apa_exec(
		apa_state_t ps, / i/o: state struct */
		#ifdef FLOAT_INTERFACE_JBM
		const float a_in[], /* i : input samples */
		#else
		const int16_t a_in[], /* i : input samples */
		#endif
		uint16_t l_in, /* i : number of input samples */
		uint16_t maxScaling, /* i : allowed number of inserted/removed samples */
		#ifdef FLOAT_INTERFACE_JBM
		float a_out[], /* o : output samples */
		#else
		int16_t a_out[], /* o : output samples */
		#endif
		uint16_t l_out / o : number of output samples */
		)
		{
		uint16_t i;
		#ifdef FLOAT_INTERFACE_JBM
		float frm_in[APA_BUF]; /* TODO(mcjbm): this buffer could be smaller - always allocates space for 16 channels */
		#else
		int16_t frm_in[APA_BUF]; /* TODO(mcjbm): this buffer could be smaller - always allocates space for 16 channels */
		#endif
		uint16_t l_frm_out;
		int16_t l_rem;
		int32_t dl_scaled, dl_copied, l_frm_out_target;
		@@ -525,8 +597,13 @@ uint8_t apa_exec(
		}
		else
		{
		#ifdef FLOAT_INTERFACE_JBM
		float *buf_out_ptr = &( ps->buf_out[ps->l_buf_out - ps->l_frm] );
		float *frm_in_ptr = &( frm_in[ps->l_frm] );
		#else
		int16_t *buf_out_ptr = &( ps->buf_out[ps->l_buf_out - ps->l_frm] );
		int16_t *frm_in_ptr = &( frm_in[ps->l_frm] );
		#endif

		/* fill input frame */
		/* 1st input frame: previous output samples */
		@@ -581,8 +658,13 @@ uint8_t apa_exec(
		/* discard old samples; always keep at least most recent l_frm samples */
		if ( ( ps->l_buf_out + l_frm_out ) > ps->buf_out_capacity )
		{
		#ifdef FLOAT_INTERFACE_JBM
		float *buf_out_ptr1 = ps->buf_out;
		float *buf_out_ptr2;
		#else
		int16_t *buf_out_ptr1 = ps->buf_out;
		int16_t *buf_out_ptr2;
		#endif

		l_rem = ( ps->l_frm - l_frm_out );
		if ( l_rem < 0 )
		@@ -602,7 +684,11 @@ uint8_t apa_exec(
		return 5;
		}
		{
		#ifdef FLOAT_INTERFACE_JBM
		float *buf_out_ptr = &( ps->buf_out[ps->l_buf_out] );
		#else
		int16_t *buf_out_ptr = &( ps->buf_out[ps->l_buf_out] );
		#endif
		for ( i = 0; i < l_frm_out; i++ )
		{
		buf_out_ptr[i] = a_out[i];
		@@ -660,7 +746,11 @@ uint8_t apa_exec(
		*/
		static void get_scaling_quality(
		const apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float *signal,
		#else
		const int16_t *signal,
		#endif
		uint16_t s_len,
		uint16_t offset,
		uint16_t corr_len,
		@@ -813,7 +903,11 @@ static float apa_getQualityIncreaseForLowEnergy(
		*/
		static bool logarithmic_search(
		const apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float *signal,
		#else
		const int16_t *signal,
		#endif
		int16_t s_start,
		uint16_t inlen,
		uint16_t offset,
		@@ -926,7 +1020,11 @@ static bool logarithmic_search(
		*/
		static bool find_synch(
		apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float *in,
		#else
		const int16_t *in,
		#endif
		uint16_t l_in,
		int16_t s_start,
		uint16_t s_len,
		@@ -981,8 +1079,13 @@ static bool find_synch(
		*/
		static bool copy_frm(
		apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float frm_in[],
		float frm_out[],
		#else
		const int16_t frm_in[],
		int16_t frm_out[],
		#endif
		uint16_t *l_frm_out )
		{
		uint16_t i;
		@@ -1029,9 +1132,17 @@ static bool copy_frm(
		*/
		static bool shrink_frm(
		apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float frm_in[],
		#else
		const int16_t frm_in[],
		#endif
		uint16_t maxScaling,
		#ifdef FLOAT_INTERFACE_JBM
		float frm_out[],
		#else
		int16_t frm_out[],
		#endif
		uint16_t *l_frm_out )
		{
		bool findSynchResult = 0;
		@@ -1165,8 +1276,13 @@ static bool shrink_frm(
		*/
		static bool extend_frm(
		apa_state_t *ps,
		#ifdef FLOAT_INTERFACE_JBM
		const float frm_in[],
		float frm_out[],
		#else
		const int16_t frm_in[],
		int16_t frm_out[],
		#endif
		uint16_t *l_frm_out )
		{
		bool findSynchResult = 0;
		@@ -1180,8 +1296,13 @@ static bool extend_frm(
		int16_t s_start = 0;
		float energy, quality = 0.0f;
		uint16_t l_frm, l_seg;
		#ifdef FLOAT_INTERFACE_JBM
		const float fadeOut, fadeIn;
		float *out;
		#else
		const int16_t fadeOut, fadeIn;
		int16_t *out;
		#endif

		l_frm = ps->l_frm;
		l_seg = ps->l_seg;
		@@ -1332,8 +1453,13 @@ static bool extend_frm(
		else
		{
		/* just copy down 1st half of current segment (= 2nd half of previous segment) */
		#ifdef FLOAT_INTERFACE_JBM
		float *frm_out_ptr;
		const float *frm_in_ptr;
		#else
		int16_t *frm_out_ptr;
		const int16_t *frm_in_ptr;
		#endif
		frm_out_ptr = &( frm_out[( n - 2 ) * l_seg] );
		frm_in_ptr = &( frm_in[l_frm + xtract[n]] );
		for ( i = 0; i < l_seg; i++ )

lib_dec/jbm_pcmdsp_apa.h

+14 −1

Original line number	Diff line number	Diff line
		@@ -120,6 +120,19 @@ bool apa_set_quality( apa_state_t *s, float quality, uint16_t qualityred, uint16

		bool apa_exit( apa_state_t **s );

		uint8_t apa_exec( apa_state_t s, const int16_t a_in[], uint16_t l_in, uint16_t maxScaling, int16_t a_out[], uint16_t l_out );
		uint8_t apa_exec( apa_state_t *s,
		#ifdef FLOAT_INTERFACE_JBM
		const float a_in[],
		#else
		const int16_t a_in[],
		#endif
		uint16_t l_in,
		uint16_t maxScaling,
		#ifdef FLOAT_INTERFACE_JBM
		float a_out[],
		#else
		int16_t a_out[],
		#endif
		uint16_t *l_out );

		#endif /* JBM_PCMDSP_APA_H */

lib_dec/jbm_pcmdsp_similarityestimation.c

+36 −0

Original line number	Diff line number	Diff line
		@@ -52,7 +52,11 @@

		/* Calculates cross correlation coefficient for template segment. */
		float cross_correlation_self(
		#ifdef FLOAT_INTERFACE_JBM
		const float *signal,
		#else
		const int16_t *signal,
		#endif
		uint16_t x,
		uint16_t y,
		uint16_t corr_len )
		@@ -63,7 +67,11 @@ float cross_correlation_self(
		c_c = 0.0f;
		for ( j = 0; j < corr_len; j++ )
		{
		#ifdef FLOAT_INTERFACE_JBM
		c_c += ( signal[j + x] * signal[j + y] );
		#else
		c_c += ( (float) signal[j + x] * (float) signal[j + y] );
		#endif
		}

		return c_c;
		@@ -71,7 +79,11 @@ float cross_correlation_self(

		/* Calculates cross correlation coefficient for template segment. */
		float cross_correlation_subsampled_self(
		#ifdef FLOAT_INTERFACE_JBM
		const float *signal,
		#else
		const int16_t *signal,
		#endif
		uint16_t x,
		uint16_t y,
		uint16_t corr_len,
		@@ -83,7 +95,11 @@ float cross_correlation_subsampled_self(
		c_c = 0.0f;
		for ( j = 0; j < corr_len; j += subsampling )
		{
		#ifdef FLOAT_INTERFACE_JBM
		c_c += ( signal[j + x] * signal[j + y] );
		#else
		c_c += ( (float) signal[j + x] * (float) signal[j + y] );
		#endif
		}

		return c_c;
		@@ -92,7 +108,11 @@ float cross_correlation_subsampled_self(

		/* Calculates normalized cross correlation coefficient for template segment. */
		float normalized_cross_correlation_self(
		#ifdef FLOAT_INTERFACE_JBM
		const float *signal,
		#else
		const int16_t *signal,
		#endif
		uint16_t x,
		uint16_t y,
		uint16_t corr_len,
		@@ -102,7 +122,11 @@ float normalized_cross_correlation_self(
		float c_c;
		float energy_xy, energy_x, energy_y;
		uint16_t j;
		#ifdef FLOAT_INTERFACE_JBM
		const float signal_a, signal_b;
		#else
		const int16_t signal_a, signal_b;
		#endif

		c_c = 0.0f;
		energy_x = 0.0f;
		@@ -111,11 +135,19 @@ float normalized_cross_correlation_self(
		signal_b = &signal[y];
		for ( j = 0; j < corr_len; j += subsampling )
		{
		#ifdef FLOAT_INTERFACE_JBM
		c_c += ( signal_a[j] * signal_b[j] );
		energy_x += ( signal_a[j] ) * ( signal_a[j] );
		energy_y += ( signal_b[j] ) * ( signal_b[j] );
		}
		energy_xy = sqrt( energy_x * energy_y );
		#else
		c_c += ( (float) signal_a[j] * (float) signal_b[j] );
		energy_x += ( (float) signal_a[j] ) * ( (float) signal_a[j] );
		energy_y += ( (float) signal_b[j] ) * ( (float) signal_b[j] );
		}
		energy_xy = (float) sqrt( (float) energy_x * (float) energy_y );
		#endif
		if ( energy_xy < 1.0f )
		{
		energy_xy = 1.0f; /* conceal silent frames */
		@@ -130,7 +162,11 @@ float normalized_cross_correlation_self(

		/* Splits the signal into segments and checks if all of them have very low energy. */
		bool isSilence(
		#ifdef FLOAT_INTERFACE_JBM
		const float *signal,
		#else
		const int16_t *signal,
		#endif
		uint32_t len,
		uint32_t segments )
		{