int output_alsa_close(struct output *h)
{
struct output_stream *s;
if(h == NULL)
return 0;
/* Stop thread */
h->stop = 1;
/* Join thread */
if(pthread_join(h->thread, NULL) < 0)
return -1;
/* Free streams */
while(h->streams != NULL)
{
s = h->streams;
h->streams = s->next;
output_alsa_free_stream(s);
}
/* Close alsa */
if(h->alsa != NULL)
snd_pcm_close(h->alsa);
/* Free ALSA config */
snd_config_update_free_global();
/* Free structure */
free(h);
return 0;
}
void
RKR::InitMIDI ()
{
// Open Alsa Seq
int alsaport_in;
int err = snd_seq_open (&midi_in, "default", SND_SEQ_OPEN_INPUT, 0);
if (err < 0)
printf ("Cannot activate ALSA seq client\n");
snd_seq_set_client_name (midi_in, "rakarrack");
snd_config_update_free_global ();
char portname[50];
// Create Alsa Seq Client
sprintf (portname, "rakarrack IN");
alsaport_in = snd_seq_create_simple_port (midi_in, portname,
SND_SEQ_PORT_CAP_WRITE |
SND_SEQ_PORT_CAP_SUBS_WRITE,
SND_SEQ_PORT_TYPE_SYNTH);
}
void printInDevices() {
char **hints;
/* Enumerate sound devices */
int err = snd_device_name_hint(0, "pcm", (void***)&hints);
if (err != 0) {
fprintf(stderr, "Can't read data\n");
exit(EXIT_FAILURE);
}
char** n = hints;
while (*n != NULL) {
char *name = snd_device_name_get_hint(*n, "NAME");
char *desc = snd_device_name_get_hint(*n, "DESC");
char *type = snd_device_name_get_hint(*n, "IOID");
if (name != NULL && desc != NULL) {
if (type == NULL || !strcmp(type, "Input")) {
printf("%s\n%s: <%s>\n\n", desc, type == NULL ? "Input/Output" : "Input",name);
}
}
if (name != NULL) free(name);
if (name != NULL) free(desc);
if (name != NULL) free(type);
n++;
}
//Free hint buffer too
snd_device_name_free_hint((void**)hints);
snd_config_update_free_global();
}
/*
Close the alsa handler
*/
snd_pcm_t* alsa_close(){
if(handle!=NULL){
return snd_pcm_close(handle);
}
snd_config_update_free_global();
return 0;
}
AlsaWork::~AlsaWork()
{
if (!devices_.empty())
devices_.clear();
currentAlsaDevice_.reset();
snd_config_update_free_global();
}
bool AudioInputALSA::Open(uint sample_bits, uint sample_rate, uint channels)
{
if (alsa_device.isEmpty())
{
LOG(VB_GENERAL, LOG_ERR, LOC + QString("invalid alsa device name, %1")
.arg(alsa_device.constData()));
return false;
}
(void)AlsaBad(snd_config_update_free_global(), "failed to update snd config");
m_audio_sample_rate = sample_rate;
m_audio_channels = channels;
m_audio_sample_bits = sample_bits;
if (AlsaBad(snd_pcm_open(&pcm_handle, alsa_device.constData(),
SND_PCM_STREAM_CAPTURE, 0), // blocking mode
"pcm open failed"))
{
pcm_handle = NULL;
return false;
}
if (!(PrepHwParams() && PrepSwParams()))
{
(void)snd_pcm_close(pcm_handle);
pcm_handle = NULL;
return false;
}
LOG(VB_AUDIO, LOG_INFO, LOC_DEV + "pcm open");
return true;
}
void Mouth::close(){
snd_pcm_hw_params_free(params);
snd_pcm_drain(capture_handle);
snd_pcm_close(capture_handle);
snd_config_update_free_global();
open=false;
}
static void installAlsaPhononDeviceHandle()
{
#ifdef HAVE_LIBASOUND2
// after recreating the global configuration we can go and install custom configuration
snd_config_update_free_global();
snd_config_update();
Q_ASSERT(snd_config);
// x-phonon: device
QFile phononDefinition(":/phonon/phonondevice.alsa");
phononDefinition.open(QIODevice::ReadOnly);
const QByteArray &phononDefinitionData = phononDefinition.readAll();
snd_input_t *sndInput = 0;
if (0 == snd_input_buffer_open(&sndInput, phononDefinitionData.constData(), phononDefinitionData.size())) {
Q_ASSERT(sndInput);
snd_config_load(snd_config, sndInput);
snd_input_close(sndInput);
}
#if 0
// phonon_softvol: device
QFile softvolDefinition(":/phonon/softvol.alsa");
softvolDefinition.open(QIODevice::ReadOnly);
const QByteArray softvolDefinitionData = softvolDefinition.readAll();
sndInput = 0;
if (0 == snd_input_buffer_open(&sndInput, softvolDefinitionData.constData(), softvolDefinitionData.size())) {
Q_ASSERT(sndInput);
snd_config_load(snd_config, sndInput);
snd_input_close(sndInput);
}
#endif
#endif // HAVE_LIBASOUND2
}
int main(int argc, char **argv)
{
register int err;
int cardNum, totalCards;
// No cards found yet
totalCards = 0;
// Start with first card
cardNum = -1;
for (;;)
{
// Get next sound card's card number. When "cardNum" == -1, then ALSA
// fetches the first card
if ((err = snd_card_next(&cardNum)) < 0)
{
printf("Can't get the next card number: %s\n", snd_strerror(err));
break;
}
// No more cards? ALSA sets "cardNum" to -1 if so
if (cardNum < 0) break;
// Another card found, so bump the count
++totalCards;
}
printf("ALSA found %i cards\n", totalCards);
// ALSA allocates some mem to load its config file when we call
// snd_card_next. Now that we're done getting the info, let's tell ALSA
// to unload the info and free up that mem
snd_config_update_free_global();
}
void alsa_clear_config_cache(void)
{
int r;
r = snd_config_update_free_global();
if (r < 0)
alsa_error("config_update_free_global", r);
}
int main(int argc, char **argv)
{
register int err;
int cardNum;
// Start with first card
cardNum = -1;
for (;;)
{
snd_ctl_t *cardHandle;
// Get next sound card's card number. When "cardNum" == -1, then ALSA
// fetches the first card
if ((err = snd_card_next(&cardNum)) < 0)
{
printf("Can't get the next card number: %s\n", snd_strerror(err));
break;
}
// No more cards? ALSA sets "cardNum" to -1 if so
if (cardNum < 0) break;
// Open this card's control interface. We specify only the card number -- not
// any device nor sub-device too
{
char str[64];
sprintf(str, "hw:%i", cardNum);
if ((err = snd_ctl_open(&cardHandle, str, 0)) < 0)
{
printf("Can't open card %i: %s\n", cardNum, snd_strerror(err));
continue;
}
}
{
snd_ctl_card_info_t *cardInfo;
// We need to get a snd_ctl_card_info_t. Just alloc it on the stack
snd_ctl_card_info_alloca(&cardInfo);
// Tell ALSA to fill in our snd_ctl_card_info_t with info about this card
if ((err = snd_ctl_card_info(cardHandle, cardInfo)) < 0)
printf("Can't get info for card %i: %s\n", cardNum, snd_strerror(err));
else
printf("Card %i = %s\n", cardNum, snd_ctl_card_info_get_name(cardInfo));
}
// Close the card's control interface after we're done with it
snd_ctl_close(cardHandle);
}
// ALSA allocates some mem to load its config file when we call some of the
// above functions. Now that we're done getting the info, let's tell ALSA
// to unload the info and free up that mem
snd_config_update_free_global();
}
int do_play(char* file_name)
{
char *pcm_name = "default";
int tmp, err, c;
snd_pcm_info_t *info;
snd_pcm_info_alloca(&info);
err = snd_output_stdio_attach(&log, stderr, 0);
assert(err >= 0);
stream = SND_PCM_STREAM_PLAYBACK;
chunk_size = -1;
rhwparams.format = DEFAULT_FORMAT;
rhwparams.rate = DEFAULT_SPEED;
rhwparams.channels = 1;
err = snd_pcm_open(&handle, pcm_name, stream, open_mode);
if (err < 0) {
error(_("audio open error: %s"), snd_strerror(err));
return 1;
}
if ((err = snd_pcm_info(handle, info)) < 0) {
error(_("info error: %s"), snd_strerror(err));
return 1;
}
if (nonblock) {
err = snd_pcm_nonblock(handle, 1);
if (err < 0) {
error(_("nonblock setting error: %s"), snd_strerror(err));
return 1;
}
}
chunk_size = 1024;
hwparams = rhwparams;
audiobuf = (u_char *)malloc(1024);
if (audiobuf == NULL) {
error(_("not enough memory"));
return 1;
}
signal(SIGINT, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGABRT, signal_handler);
playback(file_name);
snd_pcm_close(handle);
free(audiobuf);
snd_output_close(log);
snd_config_update_free_global();
return EXIT_SUCCESS;
}
/**
* @brief AlsaPlayback destructor
*/
AlsaPlayback::~AlsaPlayback()
{
if(alsa_handle)
{
snd_pcm_close(alsa_handle);
alsa_handle = NULL;
}
snd_config_update_free_global();
}
static void
alsa_finish(void *data)
{
struct alsa_data *ad = data;
alsa_data_free(ad);
/* free libasound's config cache */
snd_config_update_free_global();
}
static void
alsa_mixer_finish(struct mixer *data)
{
struct alsa_mixer *am = (struct alsa_mixer *)data;
g_free(am);
/* free libasound's config cache */
snd_config_update_free_global();
}
void audio_free(struct audio *audio)
{
if (audio->pcm) {
snd_pcm_close(audio->pcm);
}
free(audio);
snd_config_update_free_global();
}
AlsaBackend::~AlsaBackend()
{
Log("%s\n",__PRETTY_FUNCTION__);
snd_lib_error_set_handler(0);
snd_config_update_free_global();
std::map<AudioStream*, AlsaThread*>::iterator iter;
for (iter = p_alsathread.begin(); iter != p_alsathread.end(); iter++)
{
delete iter->second;
delete iter->first;
}
}
void VolumeControl::setupAlsa(){
const char *card = "default";
const char *selem_name = "Master";//or Master
if(snd_mixer_open(&handle, 0) == 0 ) mixer_opened = true;
if(mixer_opened){
//std::cout << "Mixer Opened" << std::endl;
snd_config_update_free_global();//should make valgrind STFU
snd_mixer_attach(handle, card);
snd_mixer_selem_register(handle, NULL, NULL);
snd_mixer_load(handle);
snd_mixer_selem_id_alloca(&sid);
snd_mixer_selem_id_set_index(sid, 0);
snd_mixer_selem_id_set_name(sid, selem_name);
elem = snd_mixer_find_selem(handle, sid);
snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
//std::cout << "Min:" << min << " Max:" << max << std::endl;
snd_config_update_free_global();//should make valgrind STFU
}else{
std::cout << "Failed to open mixer" << std::endl;
}
}
/**
* ags_devout_list_cards:
* @soundcard: the #AgsSoundcard
* @card_id: alsa identifier
* @card_name: card name
*
* List available soundcards.
*
* Since: 0.4
*/
void
ags_devout_list_cards(AgsSoundcard *soundcard,
GList **card_id, GList **card_name)
{
snd_ctl_t *card_handle;
snd_ctl_card_info_t *card_info;
char *name;
gchar *str;
int card_num;
int error;
*card_id = NULL;
*card_name = NULL;
card_num = -1;
while(TRUE){
error = snd_card_next(&card_num);
if(card_num < 0){
break;
}
if(error < 0){
continue;
}
str = g_strdup_printf("hw:%i\0", card_num);
error = snd_ctl_open(&card_handle, str, 0);
if(error < 0){
continue;
}
snd_ctl_card_info_alloca(&card_info);
error = snd_ctl_card_info(card_handle, card_info);
if(error < 0){
continue;
}
*card_id = g_list_prepend(*card_id, str);
*card_name = g_list_prepend(*card_name, g_strdup(snd_ctl_card_info_get_name(card_info)));
snd_ctl_close(card_handle);
}
snd_config_update_free_global();
*card_id = g_list_reverse(*card_id);
*card_name = g_list_reverse(*card_name);
}
mastermidibus::~mastermidibus ()
{
for (int i = 0; i < m_num_out_buses; ++i)
{
if (not_nullptr(m_buses_out[i]))
{
delete m_buses_out[i];
m_buses_out[i] = nullptr;
}
}
for (int i = 0; i < m_num_in_buses; ++i)
{
if (not_nullptr(m_buses_in[i]))
{
delete m_buses_in[i];
m_buses_in[i] = nullptr;
}
}
#ifdef SEQ64_HAVE_LIBASOUND
snd_seq_event_t ev;
snd_seq_ev_clear(&ev); /* kill timer */
snd_seq_stop_queue(m_alsa_seq, m_queue, &ev);
snd_seq_free_queue(m_alsa_seq, m_queue);
snd_seq_close(m_alsa_seq); /* close client */
(void) snd_config_update_free_global(); /* additional cleanup */
#endif
/*
* Still more cleanup, not in seq24.
*/
if (not_nullptr(m_poll_descriptors))
{
delete [] m_poll_descriptors;
m_poll_descriptors = nullptr;
}
if (not_nullptr(m_bus_announce))
{
delete m_bus_announce;
m_bus_announce = nullptr;
}
}
int audio_close_alsa(cst_audiodev *ad)
{
int result;
snd_pcm_t *pcm_handle;
if (ad == NULL)
return 0;
pcm_handle = (snd_pcm_t *) ad->platform_data;
snd_pcm_drain(pcm_handle); /* wait for current stuff in buffer to finish */
result = snd_pcm_close(pcm_handle);
snd_config_update_free_global();
if (result < 0)
{
cst_errmsg("audio_close_alsa: Error: %s.\n", snd_strerror(result));
}
cst_free(ad);
return result;
}
/******************************************************************************
* Sound_alsa_delete
******************************************************************************/
Int Sound_alsa_delete(Sound_Handle hSound)
{
if (hSound) {
if (hSound->rcIn) {
snd_pcm_close(hSound->rcIn);
}
if (hSound->rcOut) {
snd_pcm_close(hSound->rcOut);
}
if (hSound->hwParamsIn) {
/* Free the H/W param structure */
snd_pcm_hw_params_free(hSound->hwParamsIn);
}
if (hSound->swParamsIn) {
/* Free the S/W param structure */
snd_pcm_sw_params_free(hSound->swParamsIn);
}
if (hSound->hwParamsOut) {
/* Free the H/W param structure */
snd_pcm_hw_params_free(hSound->hwParamsOut);
}
if (hSound->swParamsOut) {
/* Free the S/W param structure */
snd_pcm_sw_params_free(hSound->swParamsOut);
}
free(hSound);
snd_config_update_free_global();
}
return Dmai_EOK;
}
void CAESinkALSA::EnumerateDevicesEx(AEDeviceInfoList &list, bool force)
{
/* ensure that ALSA has been initialized */
snd_lib_error_set_handler(sndLibErrorHandler);
if(!snd_config || force)
{
if(force)
snd_config_update_free_global();
snd_config_update();
}
snd_config_t *config;
snd_config_copy(&config, snd_config);
/* Always enumerate the default device.
* Note: If "default" is a stereo device, EnumerateDevice()
* will automatically add "@" instead to enable surroundXX mangling.
* We don't want to do that if "default" can handle multichannel
* itself (e.g. in case of a pulseaudio server). */
EnumerateDevice(list, "default", "", config);
void **hints;
if (snd_device_name_hint(-1, "pcm", &hints) < 0)
{
CLog::Log(LOGINFO, "CAESinkALSA - Unable to get a list of devices");
return;
}
std::string defaultDescription;
for (void** hint = hints; *hint != NULL; ++hint)
{
char *io = snd_device_name_get_hint(*hint, "IOID");
char *name = snd_device_name_get_hint(*hint, "NAME");
char *desc = snd_device_name_get_hint(*hint, "DESC");
if ((!io || strcmp(io, "Output") == 0) && name
&& strcmp(name, "null") != 0)
{
std::string baseName = std::string(name);
baseName = baseName.substr(0, baseName.find(':'));
if (strcmp(name, "default") == 0)
{
/* added already, but lets get the description if we have one */
if (desc)
defaultDescription = desc;
}
else if (baseName == "front")
{
/* Enumerate using the surroundXX mangling */
/* do not enumerate basic "front", it is already handled
* by the default "@" entry added in the very beginning */
if (strcmp(name, "front") != 0)
EnumerateDevice(list, std::string("@") + (name+5), desc ? desc : name, config);
}
/* Do not enumerate "default", it is already enumerated above. */
/* Do not enumerate the sysdefault or surroundXX devices, those are
* always accompanied with a "front" device and it is handled above
* as "@". The below devices will be automatically used if available
* for a "@" device. */
/* Ubuntu has patched their alsa-lib so that "defaults.namehint.extended"
* defaults to "on" instead of upstream "off", causing lots of unwanted
* extra devices (many of which are not actually routed properly) to be
* found by the enumeration process. Skip them as well ("hw", "dmix",
* "plughw", "dsnoop"). */
else if (baseName != "default"
&& baseName != "sysdefault"
&& baseName != "surround40"
&& baseName != "surround41"
&& baseName != "surround50"
&& baseName != "surround51"
&& baseName != "surround71"
&& baseName != "hw"
&& baseName != "dmix"
&& baseName != "plughw"
&& baseName != "dsnoop")
{
EnumerateDevice(list, name, desc ? desc : name, config);
}
}
free(io);
free(name);
free(desc);
}
snd_device_name_free_hint(hints);
/* set the displayname for default device */
if (!list.empty() && list[0].m_deviceName == "default")
{
/* If we have one from a hint (DESC), use it */
if (!defaultDescription.empty())
list[0].m_displayName = defaultDescription;
/* Otherwise use the discovered name or (unlikely) "Default" */
else if (list[0].m_displayName.empty())
list[0].m_displayName = "Default";
}
/* lets check uniqueness, we may need to append DEV or CARD to DisplayName */
/* If even a single device of card/dev X clashes with Y, add suffixes to
* all devices of both them, for clarity. */
/* clashing card names, e.g. "NVidia", "NVidia_2" */
std::set<std::string> cardsToAppend;
/* clashing basename + cardname combinations, e.g. ("hdmi","Nvidia") */
std::set<std::pair<std::string, std::string> > devsToAppend;
for (AEDeviceInfoList::iterator it1 = list.begin(); it1 != list.end(); ++it1)
{
for (AEDeviceInfoList::iterator it2 = it1+1; it2 != list.end(); ++it2)
{
if (it1->m_displayName == it2->m_displayName
&& it1->m_displayNameExtra == it2->m_displayNameExtra)
{
/* something needs to be done */
std::string cardString1 = GetParamFromName(it1->m_deviceName, "CARD");
std::string cardString2 = GetParamFromName(it2->m_deviceName, "CARD");
if (cardString1 != cardString2)
{
/* card name differs, add identifiers to all devices */
cardsToAppend.insert(cardString1);
cardsToAppend.insert(cardString2);
continue;
}
std::string devString1 = GetParamFromName(it1->m_deviceName, "DEV");
std::string devString2 = GetParamFromName(it2->m_deviceName, "DEV");
if (devString1 != devString2)
{
/* device number differs, add identifiers to all such devices */
devsToAppend.insert(std::make_pair(it1->m_deviceName.substr(0, it1->m_deviceName.find(':')), cardString1));
devsToAppend.insert(std::make_pair(it2->m_deviceName.substr(0, it2->m_deviceName.find(':')), cardString2));
continue;
}
/* if we got here, the configuration is really weird, just append the whole device string */
it1->m_displayName += " (" + it1->m_deviceName + ")";
it2->m_displayName += " (" + it2->m_deviceName + ")";
}
}
}
for (std::set<std::string>::iterator it = cardsToAppend.begin();
it != cardsToAppend.end(); ++it)
{
for (AEDeviceInfoList::iterator itl = list.begin(); itl != list.end(); ++itl)
{
std::string cardString = GetParamFromName(itl->m_deviceName, "CARD");
if (cardString == *it)
/* "HDA NVidia (NVidia)", "HDA NVidia (NVidia_2)", ... */
itl->m_displayName += " (" + cardString + ")";
}
}
for (std::set<std::pair<std::string, std::string> >::iterator it = devsToAppend.begin();
it != devsToAppend.end(); ++it)
{
for (AEDeviceInfoList::iterator itl = list.begin(); itl != list.end(); ++itl)
{
std::string baseName = itl->m_deviceName.substr(0, itl->m_deviceName.find(':'));
std::string cardString = GetParamFromName(itl->m_deviceName, "CARD");
if (baseName == it->first && cardString == it->second)
{
std::string devString = GetParamFromName(itl->m_deviceName, "DEV");
/* "HDMI #0", "HDMI #1" ... */
itl->m_displayNameExtra += " #" + devString;
}
}
}
}
void alsa_module::teardown() {
m_mixer.clear();
m_ctrl.clear();
snd_config_update_free_global();
}
static int findSoundCards(char **cardname)
{
int idx, dev, err;
snd_ctl_t *handle;
snd_hctl_t *hctlhandle;
snd_ctl_card_info_t *cardinfo;
snd_pcm_info_t *pcminfo;
char str[32];
snd_ctl_card_info_alloca(&cardinfo);
snd_pcm_info_alloca(&pcminfo);
snd_hctl_elem_t *elem;
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
idx = -1;
while (1) {
if ((err = snd_card_next(&idx)) < 0) {
LOGE("Card next error: %s\n", snd_strerror(err));
break;
}
if (idx < 0)
break;
sprintf(str, "hw:CARD=%i", idx);
if ((err = snd_ctl_open(&handle, str, 0)) < 0) {
LOGE("Open error: %s\n", snd_strerror(err));
continue;
}
if ((err = snd_ctl_card_info(handle, cardinfo)) < 0) {
LOGE("HW info error: %s\n", snd_strerror(err));
continue;
}
LOGD("Soundcard #%i:\n", idx + 1);
LOGD(" card - %i\n", snd_ctl_card_info_get_card(cardinfo));
LOGD(" id - '%s'\n", snd_ctl_card_info_get_id(cardinfo));
LOGD(" driver - '%s'\n", snd_ctl_card_info_get_driver(cardinfo));
LOGD(" name - '%s'\n", snd_ctl_card_info_get_name(cardinfo));
LOGD(" longname - '%s'\n", snd_ctl_card_info_get_longname(cardinfo));
LOGD(" mixername - '%s'\n", snd_ctl_card_info_get_mixername(cardinfo));
LOGD(" components - '%s'\n", snd_ctl_card_info_get_components(cardinfo));
strcpy(cardname[idx], snd_ctl_card_info_get_name(cardinfo));
LOGD("\n\n-----get cart name and id: %s : %d",cardname[idx],idx);
snd_ctl_close(handle);
if ((err = snd_hctl_open(&hctlhandle, str, 0)) < 0) {
LOGE("Control %s open error: %s", str, snd_strerror(err));
return err;
}
if ((err = snd_hctl_load(hctlhandle)) < 0) {
LOGE("Control %s local error: %s\n", str, snd_strerror(err));
return err;
}
for (elem = snd_hctl_first_elem(hctlhandle); elem; elem = snd_hctl_elem_next(elem)) {
if ((err = snd_hctl_elem_info(elem, info)) < 0) {
LOGE("Control %s snd_hctl_elem_info error: %s\n", str, snd_strerror(err));
return err;
}
snd_hctl_elem_get_id(elem, id);
show_control_id(id);
}
snd_hctl_close(hctlhandle);
}
snd_config_update_free_global();
return 0;
}
//list all the midi interfaces
void list_midi_interfaces(char* midi_dev, int bufsize)
{
register int err;
int cardNum;
char devices[5][14];
char user_midi[bufsize];
// Start with first card
cardNum = -1;
for (;;)
{
snd_ctl_t *cardHandle;
// Get next sound card's card number. When "cardNum" == -1, then ALSA
// fetches the first card
if ((err = snd_card_next(&cardNum)) < 0)
{
printf("Can't get the next card number: %s\n", snd_strerror(err));
break;
}
// No more cards? ALSA sets "cardNum" to -1 if so
if (cardNum < 0) break;
// Open this card's control interface. We specify only the card number -- not
// any device nor sub-device too
{
char str[64];
sprintf(str, "hw:%i", cardNum);
if ((err = snd_ctl_open(&cardHandle, str, 0)) < 0)
{
printf("Can't open card %i: %s\n", cardNum, snd_strerror(err));
continue;
}
}
{
int devNum;
// Start with the first MIDI device on this card
devNum = -1;
for (;;)
{
snd_rawmidi_info_t *rawMidiInfo;
register int subDevCount, i;
// Get the number of the next MIDI device on this card
if ((err = snd_ctl_rawmidi_next_device(cardHandle, &devNum)) < 0)
{
printf("Can't get next MIDI device number: %s\n", snd_strerror(err));
break;
}
// No more MIDI devices on this card? ALSA sets "devNum" to -1 if so.
// NOTE: It's possible that this sound card may have no MIDI devices on it
// at all, for example if it's only a digital audio card
if (devNum < 0) break;
// To get some info about the subdevices of this MIDI device (on the card), we need a
// snd_rawmidi_info_t, so let's allocate one on the stack
snd_rawmidi_info_alloca(&rawMidiInfo);
memset(rawMidiInfo, 0, snd_rawmidi_info_sizeof());
// Tell ALSA which device (number) we want info about
snd_rawmidi_info_set_device(rawMidiInfo, devNum);
// Get info on the MIDI outs of this device
snd_rawmidi_info_set_stream(rawMidiInfo, SND_RAWMIDI_STREAM_INPUT);
i = -1;
subDevCount = 1;
// More subdevices?
while (++i < subDevCount)
{
// Tell ALSA to fill in our snd_rawmidi_info_t with info on this subdevice
snd_rawmidi_info_set_subdevice(rawMidiInfo, i);
if ((err = snd_ctl_rawmidi_info(cardHandle, rawMidiInfo)) < 0)
{
printf("Can't get info for MIDI input subdevice hw:%i,%i,%i: %s\n", cardNum, devNum, i, snd_strerror(err));
continue;
}
// Print out how many subdevices (once only)
if (!i)
{
subDevCount = snd_rawmidi_info_get_subdevices_count(rawMidiInfo);
printf("\nFound %i MIDI input subdevices on card %i\n", subDevCount, cardNum);
}
// NOTE: If there's only one subdevice, then the subdevice number is immaterial,
// and can be omitted when you specify the hardware name
printf((subDevCount > 1 ? "[%i] - hw:%i,%i,%i\n" : "[%i] - hw:%i,%i\n"), i, cardNum, devNum, i);
sprintf(devices[i], (subDevCount > 1 ? "hw:%i,%i,%i\n":"hw:%i,%i\n"),cardNum, devNum, i);
}
}
}
// Close the card's control interface after we're done with it
snd_ctl_close(cardHandle);
}
snd_config_update_free_global();
printf("\nEnter the MIDI input to use (eg hw:1,0) > ");
scanf("%s",user_midi);
strncpy(midi_dev,user_midi,bufsize);
}
int main(int argc, char *argv[])
{
static const struct option long_option[] =
{
{"help", 0, NULL, 'h'},
{"file", 1, NULL, 'f'},
{"env", 1, NULL, 'E'},
{"initfile", 1, NULL, 'i'},
{"no-init-fallback", 0, NULL, 'I'},
{"force", 0, NULL, 'F'},
{"ignore", 0, NULL, 'g'},
{"pedantic", 0, NULL, 'P'},
{"runstate", 0, NULL, 'r'},
{"remove", 0, NULL, 'R'},
{"debug", 0, NULL, 'd'},
{"version", 0, NULL, 'v'},
{NULL, 0, NULL, 0},
};
static const char *const devfiles[] = {
"/dev/snd/controlC",
"/dev/snd/pcmC",
"/dev/snd/midiC",
"/dev/snd/hwC",
NULL
};
char *cfgfile = SYS_ASOUNDRC;
char *initfile = DATADIR "/init/00main";
char *cardname, ncardname[16];
const char *const *tmp;
int removestate = 0;
int init_fallback = 1; /* new default behavior */
int res;
command = argv[0];
while (1) {
int c;
if ((c = getopt_long(argc, argv, "hdvf:FgE:i:IPr:R", long_option, NULL)) < 0)
break;
switch (c) {
case 'h':
help();
return EXIT_SUCCESS;
case 'f':
cfgfile = optarg;
break;
case 'F':
force_restore = 1;
break;
case 'g':
ignore_nocards = 1;
break;
case 'E':
if (putenv(optarg)) {
fprintf(stderr, "environment string '%s' is wrong\n", optarg);
return EXIT_FAILURE;
}
break;
case 'i':
initfile = optarg;
break;
case 'I':
init_fallback = 0;
break;
case 'r':
statefile = optarg;
break;
case 'R':
removestate = 1;
break;
case 'P':
force_restore = 0;
break;
case 'd':
debugflag = 1;
break;
case 'v':
printf("alsactl version " SND_UTIL_VERSION_STR "\n");
return EXIT_SUCCESS;
case '?': // error msg already printed
help();
return EXIT_FAILURE;
break;
default: // should never happen
fprintf(stderr,
"Invalid option '%c' (%d) not handled??\n", c, c);
}
}
if (argc - optind <= 0) {
fprintf(stderr, "alsactl: Specify command...\n");
return 0;
}
cardname = argc - optind > 1 ? argv[optind + 1] : NULL;
for (tmp = devfiles; cardname != NULL && *tmp != NULL; tmp++) {
int len = strlen(*tmp);
if (!strncmp(cardname, *tmp, len)) {
long l = strtol(cardname + len, NULL, 0);
sprintf(ncardname, "%li", l);
cardname = ncardname;
break;
}
}
if (!strcmp(argv[optind], "init")) {
res = init(initfile, cardname);
} else if (!strcmp(argv[optind], "store")) {
res = save_state(cfgfile, cardname);
} else if (!strcmp(argv[optind], "restore")) {
if (removestate)
remove(statefile);
res = load_state(cfgfile, initfile, cardname, init_fallback);
} else {
fprintf(stderr, "alsactl: Unknown command '%s'...\n",
argv[optind]);
res = -ENODEV;
}
snd_config_update_free_global();
return res < 0 ? res : 0;
}
int main(int argc, char *argv[])
{
static const char *const devfiles[] = {
"/dev/snd/controlC",
"/dev/snd/pcmC",
"/dev/snd/midiC",
"/dev/snd/hwC",
NULL
};
char *cfgfile = SYS_ASOUNDRC;
char *initfile = DATADIR "/init/00main";
char *pidfile = SYS_PIDFILE;
char *cardname, ncardname[16];
char *cmd;
const char *const *tmp;
int removestate = 0;
int init_fallback = 1; /* new default behavior */
int period = 5*60;
int background = 0;
int daemoncmd = 0;
int use_nice = NO_NICE;
int sched_idle = 0;
struct arg *a;
struct option *o;
int i, j, k, res;
struct option *long_option;
char *short_option;
long_option = calloc(ARRAY_SIZE(args), sizeof(struct option));
if (long_option == NULL)
exit(EXIT_FAILURE);
short_option = malloc(128);
if (short_option == NULL) {
free(long_option);
exit(EXIT_FAILURE);
}
for (i = j = k = 0; i < ARRAY_SIZE(args); i++) {
a = &args[i];
if ((a->sarg & 0xff) == 0)
continue;
o = &long_option[j];
o->name = a->larg;
o->has_arg = (a->sarg & (ENVARG|FILEARG|INTARG)) != 0;
o->flag = NULL;
o->val = a->sarg & 0xff;
j++;
short_option[k++] = o->val;
if (o->has_arg)
short_option[k++] = ':';
}
short_option[k] = '\0';
command = argv[0];
while (1) {
int c;
if ((c = getopt_long(argc, argv, short_option, long_option,
NULL)) < 0)
break;
switch (c) {
case 'h':
help();
res = EXIT_SUCCESS;
goto out;
case 'f':
cfgfile = optarg;
break;
case 'l':
do_lock = 1;
break;
case 'F':
force_restore = 1;
break;
case 'g':
ignore_nocards = 1;
break;
case 'E':
if (putenv(optarg)) {
fprintf(stderr, "environment string '%s' is wrong\n", optarg);
res = EXIT_FAILURE;
goto out;
}
break;
case 'i':
initfile = optarg;
break;
case 'I':
init_fallback = 0;
break;
case 'r':
statefile = optarg;
break;
case 'R':
removestate = 1;
break;
case 'P':
force_restore = 0;
break;
case 'p':
period = atoi(optarg);
if (period < 10)
period = 5*60;
else if (period > 24*60*60)
period = 24*60*60;
break;
case 'e':
pidfile = optarg;
break;
case 'b':
background = 1;
break;
case 's':
use_syslog = 1;
break;
case 'n':
use_nice = atoi(optarg);
if (use_nice < -20)
use_nice = -20;
else if (use_nice > 19)
use_nice = 19;
break;
case 'c':
sched_idle = 1;
break;
case 'd':
debugflag = 1;
break;
case 'v':
printf("alsactl version " SND_UTIL_VERSION_STR "\n");
res = EXIT_SUCCESS;
goto out;
case '?': // error msg already printed
help();
res = EXIT_FAILURE;
goto out;
default: // should never happen
fprintf(stderr,
"Invalid option '%c' (%d) not handled??\n", c, c);
}
}
free(short_option);
short_option = NULL;
free(long_option);
long_option = NULL;
if (argc - optind <= 0) {
fprintf(stderr, "alsactl: Specify command...\n");
res = 0;
goto out;
}
cardname = argc - optind > 1 ? argv[optind + 1] : NULL;
for (tmp = devfiles; cardname != NULL && *tmp != NULL; tmp++) {
int len = strlen(*tmp);
if (!strncmp(cardname, *tmp, len)) {
long l = strtol(cardname + len, NULL, 0);
sprintf(ncardname, "%li", l);
cardname = ncardname;
break;
}
}
/* the global system file should be always locked */
if (strcmp(cfgfile, SYS_ASOUNDRC) == 0)
do_lock = 1;
/* when running in background, use syslog for reports */
if (background) {
use_syslog = 1;
daemon(0, 0);
}
cmd = argv[optind];
daemoncmd = strcmp(cmd, "daemon") == 0 || strcmp(cmd, "rdaemon") == 0;
if (use_syslog) {
openlog("alsactl", LOG_CONS|LOG_PID, LOG_DAEMON);
if (daemoncmd)
syslog(LOG_INFO, "alsactl " SND_UTIL_VERSION_STR " daemon started");
}
if (!strcmp(cmd, "init")) {
res = init(initfile, cardname);
snd_config_update_free_global();
} else if (!strcmp(cmd, "store")) {
res = save_state(cfgfile, cardname);
} else if (!strcmp(cmd, "restore") ||
!strcmp(cmd, "rdaemon") ||
!strcmp(cmd, "nrestore")) {
if (removestate)
remove(statefile);
res = load_state(cfgfile, initfile, cardname, init_fallback);
if (!strcmp(cmd, "rdaemon")) {
do_nice(use_nice, sched_idle);
res = state_daemon(cfgfile, cardname, period, pidfile);
}
if (!strcmp(cmd, "nrestore"))
res = state_daemon_kill(pidfile, "rescan");
} else if (!strcmp(cmd, "daemon")) {
do_nice(use_nice, sched_idle);
res = state_daemon(cfgfile, cardname, period, pidfile);
} else if (!strcmp(cmd, "kill")) {
res = state_daemon_kill(pidfile, cardname);
} else {
fprintf(stderr, "alsactl: Unknown command '%s'...\n", cmd);
res = -ENODEV;
}
snd_config_update_free_global();
if (use_syslog) {
if (daemoncmd)
syslog(LOG_INFO, "alsactl daemon stopped");
closelog();
}
return res < 0 ? -res : 0;
out:
free(short_option);
free(long_option);
return res;
}
la_errno_t la_playback_probe()
{
snd_pcm_t* handle;
la_playback_t* playback;
int maxfd = 0;
list_for_each_entry(la_get_playback_head(), playback, node)
{
char pcm[LA_PLAYBACK_PCM_NAME_MAX]={0};
sprintf(pcm, "%s%d", LA_PLAYBACK_PCM_NAME, playback->id);
playback->card_num = 0;
playback->mutex = la_mutex_new(true,true);
playback->mutex_stream = la_mutex_new(true,true);
playback->chunk = LA_CARD_BUFFER_SIZE;
playback->stream_len = LA_CARD_BUFFER_SIZE;
playback->stream = (char*)la_calloc(LA_CARD_BUFFER_SIZE);
playback->card_list = (la_playback_pcm_t**)la_calloc(LA_PLAYBACK_CARD_MAX * sizeof(la_playback_pcm_t*));
if(snd_pcm_open((snd_pcm_t**)&handle, pcm, SND_PCM_STREAM_PLAYBACK, 0) == 0)
{
snd_pcm_close((snd_pcm_t*)handle);
snd_config_update_free_global();
}
if(la_playback_set_master_softvol(playback, "0%") == LA_ERRNO_SUCCESS)
{
playback->master_mute = true;
la_log_debug("init %s done", pcm);
}
else
{
la_log_debug("init %s fail", pcm);
}
if(playback->stream == NULL)
return LA_ERRNO_ALLOC;
if (mkfifo(playback->fifo, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) == -1)
{
if(errno != EEXIST)
{
la_log_error("make %s error", playback->fifo);
continue;
}
else
la_log_notice("%s exist",playback->fifo);
}
// All of the writer close the FIFO, the reader sees the EOF and executes the request
// select() will always return readable, but read nothing.
// To open with O_RDWR ensures that you have at least one writer on the FIFO
if( (playback->fd = open(playback->fifo, O_RDWR | O_NONBLOCK)) >= 0 )
{
la_log_info("Open %s", playback->fifo);
if(playback->fd > maxfd)
maxfd = playback->fd;
}
else
{
la_log_error("Open %s error", playback->fifo);
}
}
cst_audiodev *audio_open_alsa(unsigned int sps, int channels)
{
cst_audiodev *ad;
int err;
/* alsa specific stuff */
snd_pcm_t *pcm_handle;
snd_pcm_hw_params_t *hwparams;
snd_pcm_format_t format;
/* Allocate the snd_pcm_hw_params_t structure on the stack. */
snd_pcm_hw_params_alloca(&hwparams);
/* Open pcm device */
err = snd_pcm_open(&pcm_handle, pcm_dev_name, SND_PCM_STREAM_PLAYBACK, 0);
if (err < 0)
{
cst_errmsg("audio_open_alsa: failed to open audio device %s. %s\n",
pcm_dev_name, snd_strerror(err));
return NULL;
}
/* Init hwparams with full configuration space */
err = snd_pcm_hw_params_any(pcm_handle, hwparams);
if (err < 0)
{
snd_pcm_close(pcm_handle);
snd_config_update_free_global();
cst_errmsg("audio_open_alsa: failed to get hardware parameters from audio device. %s\n", snd_strerror(err));
return NULL;
}
/* Set access mode */
err = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED);
if (err < 0)
{
snd_pcm_close(pcm_handle);
snd_config_update_free_global();
cst_errmsg("audio_open_alsa: failed to set access mode. %s.\n", snd_strerror(err));
return NULL;
}
#ifdef WORDS_BIGENDIAN
format = SND_PCM_FORMAT_S16_BE;
#else
format = SND_PCM_FORMAT_S16_LE;
#endif
/* Set sample format */
err = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format);
if (err <0)
{
snd_pcm_close(pcm_handle);
snd_config_update_free_global();
cst_errmsg("audio_open_alsa: failed to set format. %s.\n", snd_strerror(err));
return NULL;
}
/* Set sample rate */
err = snd_pcm_hw_params_set_rate(pcm_handle, hwparams, sps, 0);
if (err < 0)
{
snd_pcm_close(pcm_handle);
snd_config_update_free_global();
cst_errmsg("audio_open_alsa: failed to set sample rate near %d. %s.\n", sps, snd_strerror(err));
return NULL;
}
/* Set number of channels */
assert(channels >0);
err = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, channels);
if (err < 0)
{
snd_pcm_close(pcm_handle);
snd_config_update_free_global();
cst_errmsg("audio_open_alsa: failed to set number of channels to %d. %s.\n", channels, snd_strerror(err));
return NULL;
}
/* Commit hardware parameters */
err = snd_pcm_hw_params(pcm_handle, hwparams);
if (err < 0)
{
snd_pcm_close(pcm_handle);
snd_config_update_free_global();
cst_errmsg("audio_open_alsa: failed to set hw parameters. %s.\n", snd_strerror(err));
return NULL;
}
/* Make sure the device is ready to accept data */
assert(snd_pcm_state(pcm_handle) == SND_PCM_STATE_PREPARED);
/* Write hardware parameters to audio device data structure */
ad = cst_alloc(cst_audiodev, 1);
assert(ad != NULL);
ad->sps = sps;
ad->channels = channels;
ad->platform_data = (void *) pcm_handle;
return ad;
}