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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <signal.h>
#include <getopt.h>
#include <errno.h>
#include <pulse/simple.h>
#define BUFSIZE 1024
volatile sig_atomic_t flag_do = 1;
enum audio_format {
none, // = 0
wav // = 1
};
static const char *correct_formats[] = {
"wav", NULL
};
void handler(int s)
{
signal(SIGINT, handler);
flag_do = 0;
}
int loop_write(int fd, const void *data, size_t size)
{
int ret = 0;
while(size > 0) {
int r;
if((r = write(fd, data, size)) < 0)
return r;
if(r == 0)
break;
ret += r;
data = (const uint8_t *) data + r;
size -= (size_t) r;
}
return ret;
}
int main(int argc, char *argv[])
{
signal(SIGINT, handler);
pa_simple *connection;
pa_sample_spec specification;
int fd_output = STDOUT_FILENO;
int result, i;
enum audio_format file_format = none;
const struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"format", required_argument, NULL, 'f'},
{"formats", no_argument, NULL, 'F'},
{NULL, 0, NULL, 0}
};
while((result = getopt_long(argc, argv, "hf:F", long_options, NULL)) != -1) {
switch(result) {
case 'h': {
// print help
break;
}
case 'f': {
for(i = 0; correct_formats[i] != NULL; i++) {
if(strcmp(optarg, correct_formats[i]) == 0) {
file_format = i+1;
break;
}
}
if(file_format != none) break;
// else print formats (below)
}
case 'F': {
// print formats
break;
}
default: break;
}
}
if(argv[optind] != NULL) {
mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
fd_output = open(argv[optind], O_WRONLY | O_CREAT| O_TRUNC, mode);
if(fd_output == -1) {
perror("[Error] open");
exit(1);
}
}
specification.format = PA_SAMPLE_S16LE;
specification.channels = 2;
specification.rate = 44100;
connection = pa_simple_new(NULL,
argv[0],
PA_STREAM_RECORD,
NULL,
"record",
&specification,
NULL,
NULL,
NULL);
if(!connection) {
fprintf(stderr, "[Error] pa_simple_new() failed\n");
return 1;
}
fprintf(stderr, "[Message] Use \"Ctrl + C\" for exit\n");
while(flag_do) {
uint8_t buf[BUFSIZE];
// Record some data
if(pa_simple_read(connection, buf, sizeof(buf), NULL) < 0) {
fprintf(stderr, "[Error] pa_simple_read() failed\n");
return 1;
}
// And write it to fd_output
if(loop_write(fd_output, buf, sizeof(buf)) != sizeof(buf)) {
fprintf(stderr, "[Error] write() failed\n");
return 1;
}
}
if(connection)
pa_simple_free(connection);
return 0;
}
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