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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 <sys/stat.h>
#include <pulse/simple.h>
#include "audio_types.h"
#define BUFSIZE 1024
volatile static sig_atomic_t flag_do = 1;
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;
specification.format = PA_SAMPLE_S16LE;
specification.channels = 2;
specification.rate = 44100;
int fd_output = STDOUT_FILENO;
int file_format = AUDIO_FORMAT_NONE, result;
off_t offset;
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
return 0;
}
case 'f': {
file_format = checkAudioFormat(optarg);
if(file_format != AUDIO_FORMAT_NONE) break;
// else print formats (below)
}
case 'F': {
// print formats
return 0;
}
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()");
return 1;
}
}
// reserve bytes for audio header:
if(file_format != AUDIO_FORMAT_NONE) {
offset = getOffset(file_format);
if(lseek(fd_output, offset, SEEK_SET) == -1) {
perror("[Error] lseek() form header");
return 1;
}
}
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);
if(file_format != AUDIO_FORMAT_NONE) {
if(lseek(fd_output, 0, SEEK_SET) == -1) {
perror("[Error] lseek()");
return 1;
}
}
switch(file_format)
{
case AUDIO_FORMAT_NONE: break;
case AUDIO_FORMAT_WAVE: {
struct stat s;
if(fstat(fd_output, &s) == -1) {
perror("[Error] fstat");
return 1;
}
struct wav_header *header = malloc(offset);
init_wav_header(header, s.st_size, 16, 1,
specification.channels, specification.rate, 16);
#ifdef DEBUG
fprintf(stderr, "chunkId: %#x\n", header->chunkId);
fprintf(stderr, "chunkSize: %#x\n", header->chunkSize);
fprintf(stderr, "format: %#x\n", header->format);
fprintf(stderr, "subchunk1Id: %#x\n", header->subchunk1Id);
fprintf(stderr, "subchunk1Size: %#x\n", header->subchunk1Size);
fprintf(stderr, "audioFormat: %#x\n", header->audioFormat);
fprintf(stderr, "numChannels: %#x\n", header->numChannels);
fprintf(stderr, "sampleRate: %#x\n", header->sampleRate);
fprintf(stderr, "byteRate: %#x\n", header->byteRate);
fprintf(stderr, "blockAlign: %#x\n", header->blockAlign);
fprintf(stderr, "bitsPerSample: %#x\n", header->bitsPerSample);
fprintf(stderr, "subchunk2Id: %#x\n", header->subchunk2Id);
fprintf(stderr, "subchunk2Size: %#x\n", header->subchunk2Size);
#endif
if(write(fd_output, header, offset) < 0) {
perror("[Error] write()");
return 1;
}
}
default: break;
}
if(fd_output != STDOUT_FILENO) {
close(fd_output);
}
return 0;
}
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