lib/volume_underlay.c


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// Volume Underlay
//
// volume_underlay
//
// Volume Underlay
//
// 
//
// Inputs:    1
// Outputs:   1
// Constants: 1


#include "ts.h"


ts_parameter_t const ts_volume_underlay_p = { .n_inputs = 1, .n_outputs = 1, .n_constants = 1, .params_size = sizeof(uint_t) };

uint_t ts_volume_underlay_offset( ts_constant_t const *c )
{
	( void )c;
	return ( 0 );
}

int ts_volume_underlay(
	fp_t * const *y, uint_t y_n,
	fp_t const * const *x, uint_t x_n,
	uint_t n, ts_constant_t const *c
)
{
	TS_PROLOGUE( ts_volume_underlay_p );
	(void)c;
    /* Volume Underlay: normalize volume to [0,1] */
    /* Find max volume */
    fp_t max_vol = 0;
    for (uint_t i = 0; i < n; ++i) {
        if (x[0][i] > max_vol) max_vol = x[0][i];
    }

    for (uint_t i = 0; i < n; ++i) {
        y[0][i] = max_vol != 0 ? x[0][i] / max_vol : 0;
    }
	return 0;
}