/*

* frame_and_filter.c

*

* Created on: Mar 10, 2012

* Author: staticd

*/

#include <detect_envelope.h>

#include <block_dc.h>

#include <fir_filter.h>

#define row_len 23000

#define threshold 400

int signal_on = 0;

int row_index = 0;

int frame_and_filter(short sample, float *data) {

int signal;

signal = detect_envelope(block_dc(sample));

if (signal_on) {

if (row_index < row_len) {

data[row_index] = filter_signal(sample);

row_index++;

}

}

else if (signal > threshold) {

signal_on = 1;

}

return row_index;

}