void alc_alsa_probe(int type)
{
snd_ctl_t *handle;
int card, err, dev, idx;
snd_ctl_card_info_t *info;
snd_pcm_info_t *pcminfo;
snd_pcm_stream_t stream;
char name[128];
ALuint i;
if(!alsa_handle) alc_alsa_init(NULL);
if(!alsa_handle) return;
psnd_ctl_card_info_malloc(&info);
psnd_pcm_info_malloc(&pcminfo);
if(type == DEVICE_PROBE)
AppendDeviceList(alsaDevice);
else if(type == ALL_DEVICE_PROBE)
{
stream = SND_PCM_STREAM_PLAYBACK;
card = -1;
if(psnd_card_next(&card) < 0 || card < 0) {
AL_PRINT("no playback cards found...\n");
psnd_pcm_info_free(pcminfo);
psnd_ctl_card_info_free(info);
return;
}
for(i = 0;i < numDevNames;++i)
free(allDevNameMap[i].name);
allDevNameMap = realloc(allDevNameMap, sizeof(DevMap) * 1);
allDevNameMap[0].name = strdup("ALSA Software on default");
AppendAllDeviceList(allDevNameMap[0].name);
idx = 1;
while(card >= 0) {
sprintf(name, "hw:%d", card);
if ((err = psnd_ctl_open(&handle, name, 0)) < 0) {
AL_PRINT("control open (%i): %s\n", card, psnd_strerror(err));
goto next_card;
}
if ((err = psnd_ctl_card_info(handle, info)) < 0) {
AL_PRINT("control hardware info (%i): %s\n", card, psnd_strerror(err));
psnd_ctl_close(handle);
goto next_card;
}
dev = -1;
while(1) {
const char *cname, *dname;
void *temp;
if (psnd_ctl_pcm_next_device(handle, &dev)<0)
AL_PRINT("snd_ctl_pcm_next_device failed\n");
if (dev < 0)
break;
psnd_pcm_info_set_device(pcminfo, dev);
psnd_pcm_info_set_subdevice(pcminfo, 0);
psnd_pcm_info_set_stream(pcminfo, stream);
if ((err = psnd_ctl_pcm_info(handle, pcminfo)) < 0) {
if (err != -ENOENT)
AL_PRINT("control digital audio info (%i): %s\n", card, psnd_strerror(err));
continue;
}
temp = realloc(allDevNameMap, sizeof(DevMap) * (idx+1));
if(temp)
{
allDevNameMap = temp;
cname = psnd_ctl_card_info_get_name(info);
dname = psnd_pcm_info_get_name(pcminfo);
snprintf(name, sizeof(name), "ALSA Software on %s [%s] (hw:%d,%d)",
cname, dname, card, dev);
AppendAllDeviceList(name);
allDevNameMap[idx].name = strdup(name);
allDevNameMap[idx].card = card;
allDevNameMap[idx].dev = dev;
idx++;
}
}
psnd_ctl_close(handle);
next_card:
if(psnd_card_next(&card) < 0) {
AL_PRINT("snd_card_next failed\n");
break;
}
}
numDevNames = idx;
}
else if(type == CAPTURE_DEVICE_PROBE)
{
stream = SND_PCM_STREAM_CAPTURE;
card = -1;
if(psnd_card_next(&card) < 0 || card < 0) {
AL_PRINT("no capture cards found...\n");
psnd_pcm_info_free(pcminfo);
psnd_ctl_card_info_free(info);
return;
}
for(i = 0;i < numCaptureDevNames;++i)
free(allCaptureDevNameMap[i].name);
allCaptureDevNameMap = realloc(allCaptureDevNameMap, sizeof(DevMap) * 1);
allCaptureDevNameMap[0].name = strdup("ALSA Capture on default");
AppendCaptureDeviceList(allCaptureDevNameMap[0].name);
idx = 1;
while (card >= 0) {
sprintf(name, "hw:%d", card);
handle = NULL;
if ((err = psnd_ctl_open(&handle, name, 0)) < 0) {
AL_PRINT("control open (%i): %s\n", card, psnd_strerror(err));
}
if (err >= 0 && (err = psnd_ctl_card_info(handle, info)) < 0) {
AL_PRINT("control hardware info (%i): %s\n", card, psnd_strerror(err));
}
else if (err >= 0)
{
dev = -1;
while(1) {
const char *cname, *dname;
void *temp;
if (psnd_ctl_pcm_next_device(handle, &dev)<0)
AL_PRINT("snd_ctl_pcm_next_device failed\n");
if (dev < 0)
break;
psnd_pcm_info_set_device(pcminfo, dev);
psnd_pcm_info_set_subdevice(pcminfo, 0);
psnd_pcm_info_set_stream(pcminfo, stream);
if ((err = psnd_ctl_pcm_info(handle, pcminfo)) < 0) {
if (err != -ENOENT)
AL_PRINT("control digital audio info (%i): %s\n", card, psnd_strerror(err));
continue;
}
temp = realloc(allCaptureDevNameMap, sizeof(DevMap) * (idx+1));
if(temp)
{
allCaptureDevNameMap = temp;
cname = psnd_ctl_card_info_get_name(info);
dname = psnd_pcm_info_get_name(pcminfo);
snprintf(name, sizeof(name), "ALSA Capture on %s [%s] (hw:%d,%d)",
cname, dname, card, dev);
AppendCaptureDeviceList(name);
allCaptureDevNameMap[idx].name = strdup(name);
allCaptureDevNameMap[idx].card = card;
allCaptureDevNameMap[idx].dev = dev;
idx++;
}
}
}
if(handle) psnd_ctl_close(handle);
if(psnd_card_next(&card) < 0) {
AL_PRINT("snd_card_next failed\n");
break;
}
}
numCaptureDevNames = idx;
}
psnd_pcm_info_free(pcminfo);
psnd_ctl_card_info_free(info);
}
static DevMap *probe_devices(snd_pcm_stream_t stream, ALuint *count)
{
snd_ctl_t *handle;
int card, err, dev, idx;
snd_ctl_card_info_t *info;
snd_pcm_info_t *pcminfo;
DevMap *DevList;
char name[1024];
psnd_ctl_card_info_malloc(&info);
psnd_pcm_info_malloc(&pcminfo);
card = -1;
if((err=psnd_card_next(&card)) < 0)
AL_PRINT("Failed to find a card: %s\n", psnd_strerror(err));
DevList = malloc(sizeof(DevMap) * 1);
DevList[0].name = strdup("ALSA Default");
idx = 1;
while(card >= 0)
{
sprintf(name, "hw:%d", card);
if((err = psnd_ctl_open(&handle, name, 0)) < 0)
{
AL_PRINT("control open (%i): %s\n", card, psnd_strerror(err));
goto next_card;
}
if((err = psnd_ctl_card_info(handle, info)) < 0)
{
AL_PRINT("control hardware info (%i): %s\n", card, psnd_strerror(err));
psnd_ctl_close(handle);
goto next_card;
}
dev = -1;
while(1)
{
const char *cname, *dname;
void *temp;
if(psnd_ctl_pcm_next_device(handle, &dev) < 0)
AL_PRINT("snd_ctl_pcm_next_device failed\n");
if(dev < 0)
break;
psnd_pcm_info_set_device(pcminfo, dev);
psnd_pcm_info_set_subdevice(pcminfo, 0);
psnd_pcm_info_set_stream(pcminfo, stream);
if((err = psnd_ctl_pcm_info(handle, pcminfo)) < 0) {
if(err != -ENOENT)
AL_PRINT("control digital audio info (%i): %s\n", card, psnd_strerror(err));
continue;
}
temp = realloc(DevList, sizeof(DevMap) * (idx+1));
if(temp)
{
DevList = temp;
cname = psnd_ctl_card_info_get_name(info);
dname = psnd_pcm_info_get_name(pcminfo);
snprintf(name, sizeof(name), "%s [%s] (hw:%d,%d) via ALSA",
cname, dname, card, dev);
DevList[idx].name = strdup(name);
DevList[idx].card = card;
DevList[idx].dev = dev;
idx++;
}
}
psnd_ctl_close(handle);
next_card:
if(psnd_card_next(&card) < 0) {
AL_PRINT("snd_card_next failed\n");
break;
}
}
psnd_pcm_info_free(pcminfo);
psnd_ctl_card_info_free(info);
*count = idx;
return DevList;
}