mirror of
https://github.com/DrBeef/ioq3quest.git
synced 2024-11-30 15:51:53 +00:00
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
|
/* Copyright (C) 2006 Jean-Marc Valin */
|
||
|
|
/**
|
||
|
|
@file filterbank.h
|
||
|
|
@brief Converting between psd and filterbank
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
Redistribution and use in source and binary forms, with or without
|
||
|
|
modification, are permitted provided that the following conditions are
|
||
|
|
met:
|
||
|
|
|
||
|
|
1. Redistributions of source code must retain the above copyright notice,
|
||
|
|
this list of conditions and the following disclaimer.
|
||
|
|
|
||
|
|
2. 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.
|
||
|
|
|
||
|
|
3. The name of the author may not be used to endorse or promote products
|
||
|
|
derived from this software without specific prior written permission.
|
||
|
|
|
||
|
|
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 FILTERBANK_H
|
||
|
|
#define FILTERBANK_H
|
||
|
|
|
||
|
|
#include "arch.h"
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
int *bank_left;
|
||
|
|
int *bank_right;
|
||
|
|
spx_word16_t *filter_left;
|
||
|
|
spx_word16_t *filter_right;
|
||
|
|
#ifndef FIXED_POINT
|
||
|
|
float *scaling;
|
||
|
|
#endif
|
||
|
|
int nb_banks;
|
||
|
|
int len;
|
||
|
|
} FilterBank;
|
||
|
|
|
||
|
|
|
||
|
|
FilterBank *filterbank_new(int banks, spx_word32_t sampling, int len, int type);
|
||
|
|
|
||
|
|
void filterbank_destroy(FilterBank *bank);
|
||
|
|
|
||
|
|
void filterbank_compute_bank32(FilterBank *bank, spx_word32_t *ps, spx_word32_t *mel);
|
||
|
|
|
||
|
|
void filterbank_compute_psd16(FilterBank *bank, spx_word16_t *mel, spx_word16_t *psd);
|
||
|
|
|
||
|
|
#ifndef FIXED_POINT
|
||
|
|
void filterbank_compute_bank(FilterBank *bank, float *psd, float *mel);
|
||
|
|
void filterbank_compute_psd(FilterBank *bank, float *mel, float *psd);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|