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/*
** Copyright 2003-2010, VisualOn, Inc.
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
/*--------------------------------------------------------------------------*
* P_MED_O.H *
*--------------------------------------------------------------------------*
* Median open-loop lag search *
*--------------------------------------------------------------------------*/
#ifndef __P_MED_O_H__
#define __P_MED_O_H__
Word16 Pitch_med_ol( /* output: open loop pitch lag */
Word16 wsp[], /* input : signal used to compute the open loop pitch */
/* wsp[-pit_max] to wsp[-1] should be known */
Word16 L_min, /* input : minimum pitch lag */
Word16 L_max, /* input : maximum pitch lag */
Word16 L_frame, /* input : length of frame to compute pitch */
Word16 L_0, /* input : old_ open-loop pitch */
Word16 * gain, /* output: normalize correlation of hp_wsp for the Lag */
Word16 * hp_wsp_mem, /* i:o : memory of the hypass filter for hp_wsp[] (lg=9) */
Word16 * old_hp_wsp, /* i:o : hypass wsp[] */
Word16 wght_flg /* input : is weighting function used */
);
Word16 Med_olag( /* output : median of 5 previous open-loop lags */
Word16 prev_ol_lag, /* input : previous open-loop lag */
Word16 old_ol_lag[5]
);
void Hp_wsp(
Word16 wsp[], /* i : wsp[] signal */
Word16 hp_wsp[], /* o : hypass wsp[] */
Word16 lg, /* i : lenght of signal */
Word16 mem[] /* i/o : filter memory [9] */
);
#endif //__P_MED_O_H__
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