INT32 PORT_GetPortMixerDescription(INT32 mixerIndex, PortMixerDescription* description) {
snd_ctl_t* handle;
snd_ctl_card_info_t* card_info;
char devname[16];
int err;
char buffer[100];
TRACE0("> PORT_GetPortMixerDescription\n");
snd_ctl_card_info_malloc(&card_info);
sprintf(devname, ALSA_HARDWARE_CARD, (int) mixerIndex);
TRACE1("Opening alsa device \"%s\"...\n", devname);
err = snd_ctl_open(&handle, devname, 0);
if (err < 0) {
ERROR2("ERROR: snd_ctl_open, card=%d: %s\n", (int) mixerIndex, snd_strerror(err));
return FALSE;
}
err = snd_ctl_card_info(handle, card_info);
if (err < 0) {
ERROR2("ERROR: snd_ctl_card_info, card=%d: %s\n", (int) mixerIndex, snd_strerror(err));
}
strncpy(description->name, snd_ctl_card_info_get_id(card_info), PORT_STRING_LENGTH - 1);
sprintf(buffer, " [%s]", devname);
strncat(description->name, buffer, PORT_STRING_LENGTH - 1 - strlen(description->name));
strncpy(description->vendor, "ALSA (http://www.alsa-project.org)", PORT_STRING_LENGTH - 1);
strncpy(description->description, snd_ctl_card_info_get_name(card_info), PORT_STRING_LENGTH - 1);
strncat(description->description, ", ", PORT_STRING_LENGTH - 1 - strlen(description->description));
strncat(description->description, snd_ctl_card_info_get_mixername(card_info), PORT_STRING_LENGTH - 1 - strlen(description->description));
getALSAVersion(description->version, PORT_STRING_LENGTH - 1);
snd_ctl_close(handle);
snd_ctl_card_info_free(card_info);
TRACE0("< PORT_GetPortMixerDescription\n");
return TRUE;
}
int deviceInfoIterator(UINT32 deviceID, snd_pcm_info_t* pcminfo,
snd_ctl_card_info_t* cardinfo, void* userData) {
char buffer[300];
ALSA_AudioDeviceDescription* desc = (ALSA_AudioDeviceDescription*)userData;
#ifdef ALSA_PCM_USE_PLUGHW
int usePlugHw = 1;
#else
int usePlugHw = 0;
#endif
initAlsaSupport();
if (desc->index == 0) {
// we found the device with correct index
*(desc->maxSimultaneousLines) = needEnumerateSubdevices(ALSA_PCM) ?
1 : snd_pcm_info_get_subdevices_count(pcminfo);
*desc->deviceID = deviceID;
buffer[0]=' '; buffer[1]='[';
// buffer[300] is enough to store the actual device string w/o overrun
getDeviceStringFromDeviceID(&buffer[2], deviceID, usePlugHw, ALSA_PCM);
strncat(buffer, "]", sizeof(buffer) - strlen(buffer) - 1);
strncpy(desc->name,
(cardinfo != NULL)
? snd_ctl_card_info_get_id(cardinfo)
: snd_pcm_info_get_id(pcminfo),
desc->strLen - strlen(buffer));
strncat(desc->name, buffer, desc->strLen - strlen(desc->name));
strncpy(desc->vendor, "ALSA (http://www.alsa-project.org)", desc->strLen);
strncpy(desc->description,
(cardinfo != NULL)
? snd_ctl_card_info_get_name(cardinfo)
: snd_pcm_info_get_name(pcminfo),
desc->strLen);
strncat(desc->description, ", ", desc->strLen - strlen(desc->description));
strncat(desc->description, snd_pcm_info_get_id(pcminfo), desc->strLen - strlen(desc->description));
strncat(desc->description, ", ", desc->strLen - strlen(desc->description));
strncat(desc->description, snd_pcm_info_get_name(pcminfo), desc->strLen - strlen(desc->description));
getALSAVersion(desc->version, desc->strLen);
TRACE4("Returning %s, %s, %s, %s\n", desc->name, desc->vendor, desc->description, desc->version);
return FALSE; // do not continue iteration
}
desc->index--;
return TRUE;
}
int getMidiDeviceVersion(int index, char *name, UINT32 nameLength) {
getALSAVersion(name, nameLength);
return MIDI_SUCCESS;
}
