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***********************************************************************/

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

/***********************************************************

* Pitch analyser function

********************************************************** */

#include "SigProc_FIX.h"

#include "pitch_est_defines.h"

void silk_decode_pitch(

    opus_int16                  lagIndex,           /* I                                                                */

    opus_int8                   contourIndex,       /* O                                                                */

    opus_int                    pitch_lags[],       /* O    4 pitch values                                              */

    const opus_int              Fs_kHz,             /* I    sampling frequency (kHz)                                    */

    const opus_int              nb_subfr            /* I    number of sub frames                                        */

)

{

    opus_int   lag, k, min_lag, max_lag, cbk_size;

    const opus_int8 *Lag_CB_ptr;

    if( Fs_kHz == 8 ) {

        if( nb_subfr == PE_MAX_NB_SUBFR ) {

            Lag_CB_ptr = &silk_CB_lags_stage2[ 0 ][ 0 ];

            cbk_size   = PE_NB_CBKS_STAGE2_EXT;

        } else {

            celt_assert( nb_subfr == PE_MAX_NB_SUBFR >> 1 );

            Lag_CB_ptr = &silk_CB_lags_stage2_10_ms[ 0 ][ 0 ];

            cbk_size   = PE_NB_CBKS_STAGE2_10MS;

        }

    } else {

        if( nb_subfr == PE_MAX_NB_SUBFR ) {

            Lag_CB_ptr = &silk_CB_lags_stage3[ 0 ][ 0 ];

            cbk_size   = PE_NB_CBKS_STAGE3_MAX;

        } else {

            celt_assert( nb_subfr == PE_MAX_NB_SUBFR >> 1 );

            Lag_CB_ptr = &silk_CB_lags_stage3_10_ms[ 0 ][ 0 ];

            cbk_size   = PE_NB_CBKS_STAGE3_10MS;

        }

    }

    min_lag = silk_SMULBB( PE_MIN_LAG_MS, Fs_kHz );

    max_lag = silk_SMULBB( PE_MAX_LAG_MS, Fs_kHz );

    lag = min_lag + lagIndex;

    for( k = 0; k < nb_subfr; k++ ) {

        pitch_lags[ k ] = lag + matrix_ptr( Lag_CB_ptr, k, contourIndex, cbk_size );

        pitch_lags[ k ] = silk_LIMIT( pitch_lags[ k ], min_lag, max_lag );

    }

}