/*
 *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

/*
 * codec.h
 *
 * This header file contains the calls to the internal encoder
 * and decoder functions.
 *
 */

#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_CODEC_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_CODEC_H_

#include "structs.h"


int WebRtcIsacfix_EstimateBandwidth(BwEstimatorstr   *bwest_str,
                                    Bitstr_dec       *streamdata,
                                    WebRtc_Word32      packet_size,
                                    WebRtc_UWord16     rtp_seq_number,
                                    WebRtc_UWord32     send_ts,
                                    WebRtc_UWord32     arr_ts);

WebRtc_Word16 WebRtcIsacfix_DecodeImpl(WebRtc_Word16   *signal_out16,
                                       ISACFIX_DecInst_t  *ISACdec_obj,
                                       WebRtc_Word16        *current_framesamples);

WebRtc_Word16 WebRtcIsacfix_DecodePlcImpl(WebRtc_Word16       *decoded,
                                          ISACFIX_DecInst_t *ISACdec_obj,
                                          WebRtc_Word16       *current_framesample );

int WebRtcIsacfix_EncodeImpl(WebRtc_Word16      *in,
                             ISACFIX_EncInst_t  *ISACenc_obj,
                             BwEstimatorstr      *bw_estimatordata,
                             WebRtc_Word16         CodingMode);

int WebRtcIsacfix_EncodeStoredData(ISACFIX_EncInst_t  *ISACenc_obj,
                                   int     BWnumber,
                                   float              scale,
                                   WebRtc_Word16        CodingMode);

/************************** initialization functions *************************/

void WebRtcIsacfix_InitMaskingEnc(MaskFiltstr_enc *maskdata);
void WebRtcIsacfix_InitMaskingDec(MaskFiltstr_dec *maskdata);

void WebRtcIsacfix_InitPreFilterbank(PreFiltBankstr *prefiltdata);

void WebRtcIsacfix_InitPostFilterbank(PostFiltBankstr *postfiltdata);

void WebRtcIsacfix_InitPitchFilter(PitchFiltstr *pitchfiltdata);

void WebRtcIsacfix_InitPitchAnalysis(PitchAnalysisStruct *State);

void WebRtcIsacfix_InitPlc( PLCstr *State );


/**************************** transform functions ****************************/

void WebRtcIsacfix_InitTransform();


void WebRtcIsacfix_Time2Spec(WebRtc_Word16 *inre1Q9,
                             WebRtc_Word16 *inre2Q9,
                             WebRtc_Word16 *outre,
                             WebRtc_Word16 *outim);



void WebRtcIsacfix_Spec2Time(WebRtc_Word16 *inreQ7,
                             WebRtc_Word16 *inimQ7,
                             WebRtc_Word32 *outre1Q16,
                             WebRtc_Word32 *outre2Q16);




/***************************** filterbank functions **************************/



void WebRtcIsacfix_SplitAndFilter1(WebRtc_Word16    *in,
                                   WebRtc_Word16    *LP16,
                                   WebRtc_Word16    *HP16,
                                   PreFiltBankstr *prefiltdata);

void WebRtcIsacfix_FilterAndCombine1(WebRtc_Word16     *tempin_ch1,
                                     WebRtc_Word16     *tempin_ch2,
                                     WebRtc_Word16     *out16,
                                     PostFiltBankstr *postfiltdata);

#ifdef NB_CALLS

void WebRtcIsacfix_SplitAndFilter2(WebRtc_Word16    *in,
                                   WebRtc_Word16    *LP16,
                                   WebRtc_Word16    *HP16,
                                   PreFiltBankstr *prefiltdata);

void WebRtcIsacfix_FilterAndCombine2(WebRtc_Word16     *tempin_ch1,
                                     WebRtc_Word16     *tempin_ch2,
                                     WebRtc_Word16     *out16,
                                     PostFiltBankstr *postfiltdata,
                                     WebRtc_Word16     len);

#endif

/************************* normalized lattice filters ************************/


void WebRtcIsacfix_NormLatticeFilterMa(WebRtc_Word16 orderCoef,
                                       WebRtc_Word32 *stateGQ15,
                                       WebRtc_Word16 *lat_inQ0,
                                       WebRtc_Word16 *filt_coefQ15,
                                       WebRtc_Word32 *gain_lo_hiQ17,
                                       WebRtc_Word16 lo_hi,
                                       WebRtc_Word16 *lat_outQ9);


void WebRtcIsacfix_NormLatticeFilterAr(WebRtc_Word16 orderCoef,
                                       WebRtc_Word16 *stateGQ0,
                                       WebRtc_Word32 *lat_inQ25,
                                       WebRtc_Word16 *filt_coefQ15,
                                       WebRtc_Word32 *gain_lo_hiQ17,
                                       WebRtc_Word16 lo_hi,
                                       WebRtc_Word16 *lat_outQ0);

int WebRtcIsacfix_AutocorrFix(WebRtc_Word32        *r,
                              const WebRtc_Word16 *x,
                              WebRtc_Word16        N,
                              WebRtc_Word16        order,
                              WebRtc_Word16        *scale);

#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_CODEC_H_ */