ambi_enc_internal.h

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/*
 * Copyright 2016-2018 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 __AMBI_ENC_INTERNAL_H_INCLUDED__
#define __AMBI_ENC_INTERNAL_H_INCLUDED__
 
#include "ambi_enc.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(AMBI_ENC_FRAME_SIZE)
# if defined(FRAME_SIZE) /* Use the global framesize if it is specified: */
#  define AMBI_ENC_FRAME_SIZE ( FRAME_SIZE )   
# else /* Otherwise, the default framesize for this example is: */
#  define AMBI_ENC_FRAME_SIZE ( 64 )           
# endif
#endif
 
/* ========================================================================== */
/*                                 Structures                                 */
/* ========================================================================== */

typedef struct _ambi_enc
{
    /* Internal audio buffers */
    float inputFrameTD[MAX_NUM_INPUTS][AMBI_ENC_FRAME_SIZE];              
    float prev_inputFrameTD[MAX_NUM_INPUTS][AMBI_ENC_FRAME_SIZE];         
    float tempFrame_fadeOut[MAX_NUM_SH_SIGNALS][AMBI_ENC_FRAME_SIZE];     
    float tempFrame[MAX_NUM_SH_SIGNALS][AMBI_ENC_FRAME_SIZE];             
    float outputFrameTD_fadeIn[MAX_NUM_SH_SIGNALS][AMBI_ENC_FRAME_SIZE];  
    float outputFrameTD[MAX_NUM_SH_SIGNALS][AMBI_ENC_FRAME_SIZE];         
 
    /* Internal variables */
    float fs;                                                    
    int recalc_SH_FLAG[MAX_NUM_INPUTS];                          
    float Y[MAX_NUM_SH_SIGNALS][MAX_NUM_INPUTS];                 
    float prev_Y[MAX_NUM_SH_SIGNALS][MAX_NUM_INPUTS];            
    float interpolator_fadeIn[AMBI_ENC_FRAME_SIZE];              
    float interpolator_fadeOut[AMBI_ENC_FRAME_SIZE];             
    int new_nSources;                                            
    
    /* user parameters */
    int nSources;                                                
    float src_dirs_deg[MAX_NUM_INPUTS][2];                       
    CH_ORDER chOrdering;                                         
    NORM_TYPES norm;                                             
    SH_ORDERS order;                                             
    int enablePostScaling;                                       
    float src_gains[MAX_NUM_INPUTS];                             
 
} ambi_enc_data;
    
 
/* ========================================================================== */
/*                             Internal Functions                             */
/* ========================================================================== */

void loadSourceConfigPreset(SOURCE_CONFIG_PRESETS preset,
                            float dirs_deg[MAX_NUM_INPUTS][2],
                            int* nCH);
 
 
#ifdef __cplusplus
} /* extern "C" { */
#endif /* __cplusplus */
 
#endif /* __AMBI_ENC_INTERNAL_H_INCLUDED__ */