jamulus/libs/celt/cc6_pitch.h

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/* (C) 2007-2008 Jean-Marc Valin, CSIRO
*/
/**
@file pitch.h
@brief Pitch analysis
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of the Xiph.org Foundation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef cc6__PITCH_H
#define cc6__PITCH_H
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#include "cc6_kiss_fftr.h"
#include "cc6_psy.h"
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#include "cc6_modes.h"
cc6_kiss_fftr_cfg cc6_pitch_state_alloc(int max_lag);
void cc6_pitch_state_free(cc6_kiss_fftr_cfg st);
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/** Find the optimal delay for the pitch prediction. Computation is
done in the frequency domain, both to save time and to make it
easier to apply psychoacoustic weighting */
void cc6_find_spectral_pitch(const cc6_CELTMode *m, cc6_kiss_fftr_cfg fft, const struct cc6_PsyDecay *decay, const cc6_celt_sig_t *x, const cc6_celt_sig_t *y, const cc6_celt_word16_t *window, cc6_celt_word16_t * __restrict X, int len, int max_pitch, int *pitch);
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#endif