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PCM changes (record->capture)...

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This commit is contained in:
Jaroslav Kysela 1999-06-12 19:23:10 +00:00
parent fd672765f4
commit dc126564c7
8 changed files with 57 additions and 57 deletions
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34
test/latency.c
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@ -14,14 +14,14 @@ static char *xitoa(int aaa)
/*
* This small demo program can be used for measuring latency between
* record and playback. This latency is measured from driver (diff when
* playback and record was started). Scheduler is set to SCHED_RR.
* capture and playback. This latency is measured from driver (diff when
* playback and capture was started). Scheduler is set to SCHED_RR.
*
* Used format is 44100Hz, Signed Little Endian 16-bit, Stereo.
*
* Program begins with 128-byte fragment (about 726us) and step is 32-byte
* until playback without underruns is reached. This program starts playback
* after two fragments are recorded (teoretical latency is 1452us by 128-byte
* after two fragments are captureed (teoretical latency is 1452us by 128-byte
* fragment).
*/
@ -38,7 +38,7 @@ void setformat(void *phandle, void *rhandle)
printf("Playback format error: %s\n", snd_strerror(err));
exit(0);
}
if ((err = snd_pcm_record_format(rhandle, &format)) < 0) {
if ((err = snd_pcm_capture_format(rhandle, &format)) < 0) {
printf("Record format error: %s\n", snd_strerror(err));
exit(0);
}
@ -46,7 +46,7 @@ void setformat(void *phandle, void *rhandle)
printf("Playback time error: %s\n", snd_strerror(err));
exit(0);
}
if ((err = snd_pcm_record_time(rhandle, 1)) < 0) {
if ((err = snd_pcm_capture_time(rhandle, 1)) < 0) {
printf("Record time error: %s\n", snd_strerror(err));
exit(0);
}
@ -56,15 +56,15 @@ int setparams(void *phandle, void *rhandle, int *fragmentsize)
{
int err, step = 4;
snd_pcm_playback_info_t pinfo;
snd_pcm_record_info_t rinfo;
snd_pcm_capture_info_t rinfo;
snd_pcm_playback_params_t pparams;
snd_pcm_record_params_t rparams;
snd_pcm_capture_params_t rparams;
if ((err = snd_pcm_playback_info(phandle, &pinfo)) < 0) {
printf("Playback info error: %s\n", snd_strerror(err));
exit(0);
}
if ((err = snd_pcm_record_info(rhandle, &rinfo)) < 0) {
if ((err = snd_pcm_capture_info(rhandle, &rinfo)) < 0) {
printf("Record info error: %s\n", snd_strerror(err));
exit(0);
}
@ -96,7 +96,7 @@ int setparams(void *phandle, void *rhandle, int *fragmentsize)
bzero(&rparams, sizeof(rparams));
rparams.fragment_size = *fragmentsize;
rparams.fragments_min = 1; /* wakeup if at least one fragment is ready */
if ((err = snd_pcm_record_params(rhandle, &rparams)) < 0) {
if ((err = snd_pcm_capture_params(rhandle, &rparams)) < 0) {
*fragmentsize += step;
continue;
}
@ -122,7 +122,7 @@ int playbackunderrun(void *phandle)
return pstatus.underrun;
}
void recordfragment(void *rhandle, char *buffer, int index, int fragmentsize)
void capturefragment(void *rhandle, char *buffer, int index, int fragmentsize)
{
int err;
@ -184,14 +184,14 @@ int main(void)
int err, fragmentsize = 0;
int ridx, pidx, size, ok;
snd_pcm_playback_status_t pstatus;
snd_pcm_record_status_t rstatus;
snd_pcm_capture_status_t rstatus;
setscheduler();
if ((err = snd_pcm_open(&phandle, pcard, pdevice, SND_PCM_OPEN_PLAYBACK)) < 0) {
printf("Playback open error: %s\n", snd_strerror(err));
return 0;
}
if ((err = snd_pcm_open(&rhandle, rcard, rdevice, SND_PCM_OPEN_RECORD)) < 0) {
if ((err = snd_pcm_open(&rhandle, rcard, rdevice, SND_PCM_OPEN_CAPTURE)) < 0) {
printf("Record open error: %s\n", snd_strerror(err));
return 0;
}
@ -201,9 +201,9 @@ int main(void)
break;
ok = 1;
ridx = pidx = size = 0;
recordfragment(rhandle, buffer, ridx++, fragmentsize);
recordfragment(rhandle, buffer, ridx++, fragmentsize);
if ((err = snd_pcm_record_status(rhandle, &rstatus)) < 0) {
capturefragment(rhandle, buffer, ridx++, fragmentsize);
capturefragment(rhandle, buffer, ridx++, fragmentsize);
if ((err = snd_pcm_capture_status(rhandle, &rstatus)) < 0) {
printf("Record status error: %s\n", snd_strerror(err));
exit(0);
}
@ -213,7 +213,7 @@ int main(void)
pidx += 2;
pidx %= 2;
while (ok && size < 3 * 176400) { /* 30 seconds */
recordfragment(rhandle, buffer, ridx++, fragmentsize);
capturefragment(rhandle, buffer, ridx++, fragmentsize);
ridx %= 2;
playfragment(phandle, buffer, pidx++, fragmentsize);
size += fragmentsize;
@ -225,7 +225,7 @@ int main(void)
printf("Playback status error: %s\n", snd_strerror(err));
exit(0);
}
snd_pcm_flush_record(rhandle);
snd_pcm_flush_capture(rhandle);
snd_pcm_flush_playback(phandle);
if (ok && !playbackunderrun(phandle) > 0) {
printf("Playback OK!!!\n");