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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Nicolas Pitre <nico@cam.org>
* Copyright (C) 2006-2007 by Stéphane Doyon <s.doyon@videotron.ca>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _TDSPEED_H
#define _TDSPEED_H
#include "dsp.h"
/* for the precision #defines: */
#include "pitchscreen.h"
#define TDSPEED_OUTBUFSIZE 4096
/* some #define functions to get the pitch, stretch and speed values based on */
/* two known values. Remember that params are alphabetical. */
#define GET_SPEED(pitch, stretch) \
((pitch * stretch + PITCH_SPEED_100 / 2L) / PITCH_SPEED_100)
#define GET_PITCH(speed, stretch) \
((speed * PITCH_SPEED_100 + stretch / 2L) / stretch)
#define GET_STRETCH(pitch, speed) \
((speed * PITCH_SPEED_100 + pitch / 2L) / pitch)
void tdspeed_init(void);
bool tdspeed_config(int samplerate, bool stereo, int32_t factor);
long tdspeed_est_output_size(void);
long tdspeed_est_input_size(long size);
int tdspeed_doit(int32_t *src[], int count);
#define STRETCH_MAX (250L * PITCH_SPEED_PRECISION) /* 250% */
#define STRETCH_MIN (35L * PITCH_SPEED_PRECISION) /* 35% */
#endif
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