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/* ====================================================================
* Copyright (c) 2006 Carnegie Mellon University. All rights
* reserved.
*
* 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.
*
* This work was supported in part by funding from the Defense Advanced
* Research Projects Agency and the National Science Foundation of the
* United States of America, and the CMU Sphinx Speech Consortium.
*
* THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
* ANY EXPRESSED 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 CARNEGIE MELLON UNIVERSITY
* NOR ITS EMPLOYEES 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 FE_WARP_H
#define FE_WARP_H
#include "fe_internal.h"
#ifdef __cplusplus
extern "C" {
#endif
#if 0
/* Fool Emacs. */
}
#endif
#define FE_WARP_ID_INVERSE_LINEAR 0
#define FE_WARP_ID_AFFINE 1
#define FE_WARP_ID_PIECEWISE_LINEAR 2
#define FE_WARP_ID_EIDE_GISH 3
#define FE_WARP_ID_MAX 2
#define FE_WARP_ID_NONE 0xffffffff
typedef struct {
void (*set_parameters)(char const *param_str, float sampling_rate);
const char * (*doc)(void);
uint32 (*id)(void);
uint32 (*n_param)(void);
float (*warped_to_unwarped)(float nonlinear);
float (*unwarped_to_warped)(float linear);
void (*print)(const char *label);
} fe_warp_conf_t;
int fe_warp_set(melfb_t *mel, const char *id_name);
uint32 fe_warp_id(melfb_t *mel);
const char * fe_warp_doc(melfb_t *mel);
void fe_warp_set_parameters(melfb_t *mel, char const *param_str, float sampling_rate);
uint32 fe_warp_n_param(melfb_t *mel);
float fe_warp_warped_to_unwarped(melfb_t *mel, float nonlinear);
float fe_warp_unwarped_to_warped(melfb_t *mel, float linear);
void fe_warp_print(melfb_t *mel, const char *label);
#define FE_WARP_NO_SIZE 0xffffffff
#ifdef __cplusplus
}
#endif
#endif /* FE_WARP_H */
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