static int
files_close(void *handle)
{
struct files_handle *h = handle;
if (h->audio.fmtid != AUDIO_NONE) {
wav_stop_write(h->wav_fd,&h->wav_header,h->wav_size);
close(h->wav_fd);
}
free(h);
return 0;
}
static int
raw_close(void *handle)
{
struct raw_handle *h = handle;
if (h->audio.fmtid != AUDIO_NONE) {
wav_stop_write(h->wav_fd,&h->wav_header,h->wav_size);
close(h->wav_fd);
}
if (h->video.fmtid != VIDEO_NONE && 1 != h->fd)
close(h->fd);
free(h);
return 0;
}
int main()
{
long loops;
int rc;
int size;
snd_pcm_t *rec_handle;
snd_pcm_hw_params_t *rec_params;
unsigned int val;
int dir;
snd_pcm_uframes_t frames;
char *buffer;
WAVEHDR wavheader;
int total_len = 0;
FILE *fp_rec = fopen("rec.wav", "wb");
if(fp_rec==NULL)
{
return 0;
}
wav_start_write(fp_rec, &wavheader);
/* Open PCM device for recording (capture). */
rc = snd_pcm_open(&rec_handle, "default",
SND_PCM_STREAM_CAPTURE, 0);
if (rc < 0) {
fprintf(stderr,
"unable to open pcm device: %s\n",
snd_strerror(rc));
exit(1);
}
/* Allocate a hardware parameters object. */
snd_pcm_hw_params_alloca(&rec_params);
/* Fill it in with default values. */
snd_pcm_hw_params_any(rec_handle, rec_params);
/* Set the desired hardware parameters. */
/* Interleaved mode */
snd_pcm_hw_params_set_access(rec_handle, rec_params,
SND_PCM_ACCESS_RW_INTERLEAVED);
/* Signed 16-bit little-endian format */
snd_pcm_hw_params_set_format(rec_handle, rec_params,
SND_PCM_FORMAT_S16_LE);
/* Two channels (stereo) */
snd_pcm_hw_params_set_channels(rec_handle, rec_params, 1);
/* 44100 bits/second sampling rate (CD quality) */
val = 8000;
snd_pcm_hw_params_set_rate_near(rec_handle, rec_params,
&val, &dir);
/* Set period size to 32 frames. */
frames = 32;
snd_pcm_hw_params_set_period_size_near(rec_handle,
rec_params, &frames, &dir);
/* Write the parameters to the driver */
rc = snd_pcm_hw_params(rec_handle, rec_params);
if (rc < 0)
{
fprintf(stderr,
"unable to set hw parameters: %s\n",
snd_strerror(rc));
exit(1);
}
/* Use a buffer large enough to hold one period */
snd_pcm_hw_params_get_period_size(rec_params, &frames, &dir);
size = frames * 2; /* 2 bytes/sample, 2 channels */
buffer = (char *) malloc(size);
/* We want to loop for 5 seconds */
snd_pcm_hw_params_get_period_time(rec_params, &val, &dir);
loops = 2000;
while (loops-- > 0)
{
rc = snd_pcm_readi(rec_handle, buffer, frames);
if (rc == -EPIPE)
{
/* EPIPE means overrun */
fprintf(stderr, "overrun occurred\n");
snd_pcm_prepare(rec_handle);
}
else if (rc < 0)
{
fprintf(stderr, "error from read: %s\n", snd_strerror(rc));
}
else if (rc != (int)frames)
{
fprintf(stderr, "short read, read %d frames\n", rc);
}
rc = fwrite(buffer, 1, size, fp_rec);
total_len += size;
printf("#\n");
if (rc != size)
fprintf(stderr,"short write: wrote %d bytes\n", rc);
}
wav_stop_write(fp_rec, &wavheader, total_len);
snd_pcm_drain(rec_handle);
snd_pcm_close(rec_handle);
free(buffer);
fclose(fp_rec);
return 0;
}
