shithub: riscv

ref: 172dc0005aa16dea8451bf2bcef7f3eb04df2c04
dir: /sys/src/cmd/audio/scream/screamenc.c/

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#include <u.h>
#include <libc.h>

int freq = 44100;
int chan = 2;
int bps = 16;
int delay = 5;

uchar buf[2048];

void
main(void)
{
	int n, m;

	if((freq % 44100) == 0){
		buf[0] = 0x80 | (freq / 44100);
	} else {
		buf[0] = freq / 48000;
	}
	buf[1] = bps;
	buf[2] = chan;
	buf[3] = 0;
	buf[4] = 0;

	n = (bps/8)*chan*((delay*freq+999)/1000);
	while((m = read(0, buf+5, n)) > 0){
		if(write(1, buf, 5+m) < 0)
			sysfatal("write: %r");
	}
	exits(nil);
}