pitch_shifter_internal.h

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/*
 * Copyright 2020 Leo McCormack
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

 
#ifndef __PITCH_SHIFTER_INTERNAL_H_INCLUDED__
#define __PITCH_SHIFTER_INTERNAL_H_INCLUDED__
 
#include "pitch_shifter.h" /* Include header for this example */
#include "saf.h"           /* Main include header for SAF */
#include "saf_externals.h" /* To also include SAF dependencies (cblas etc.) */
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
/* ========================================================================== */
/*                            Internal Parameters                             */
/* ========================================================================== */
 
#if !defined(PITCH_SHIFTER_FRAME_SIZE)
# if defined(FRAME_SIZE) /* Use the global framesize if it is specified: */
#  define PITCH_SHIFTER_FRAME_SIZE ( FRAME_SIZE )  
# else /* Otherwise, the default framesize for this example is: */
#  define PITCH_SHIFTER_FRAME_SIZE ( 128 )         
# endif
#endif
 
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) && !defined(__STDC_NO_ATOMICS__)
  typedef _Atomic PITCH_SHIFTER_FFTSIZE_OPTIONS _Atomic_PITCH_SHIFTER_FFTSIZE_OPTIONS;
  typedef _Atomic PITCH_SHIFTER_OSAMP_OPTIONS _Atomic_PITCH_SHIFTER_OSAMP_OPTIONS;
#else
  typedef PITCH_SHIFTER_FFTSIZE_OPTIONS _Atomic_PITCH_SHIFTER_FFTSIZE_OPTIONS;
  typedef PITCH_SHIFTER_OSAMP_OPTIONS _Atomic_PITCH_SHIFTER_OSAMP_OPTIONS;
#endif
 
/* ========================================================================== */
/*                                 Structures                                 */
/* ========================================================================== */

typedef struct _pitch_shifter
{
    /* FIFO buffers */
    int FIFO_idx;                   
    float** inFIFO;                 
    float** outFIFO;                
 
    /* internal */
    void* hSmb;                     
    _Atomic_CODEC_STATUS codecStatus;  
    _Atomic_FLOAT32 progressBar0_1; 
    char* progressBarText;          
    _Atomic_PROC_STATUS procStatus; 
    float sampleRate;               
    float inputFrame[MAX_NUM_CHANNELS][PITCH_SHIFTER_FRAME_SIZE];  
    float outputFrame[MAX_NUM_CHANNELS][PITCH_SHIFTER_FRAME_SIZE]; 
    _Atomic_INT32 new_nChannels;    
    int fftFrameSize;               
    int stepsize;                   
 
    /* user parameters */
    _Atomic_INT32 nChannels;        
    _Atomic_FLOAT32 pitchShift_factor;  
    _Atomic_PITCH_SHIFTER_FFTSIZE_OPTIONS fftsize_option; 
    _Atomic_PITCH_SHIFTER_OSAMP_OPTIONS osamp_option;     
    
} pitch_shifter_data;
 
 
/* ========================================================================== */
/*                             Internal Functions                             */
/* ========================================================================== */

void pitch_shifter_setCodecStatus(void* const hPS,
                                  CODEC_STATUS newStatus);
    
    
#ifdef __cplusplus
} /* extern "C" { */
#endif /* __cplusplus */
 
#endif /* __PITCH_SHIFTER_INTERNAL_H_INCLUDED__ */