static int check_enum_elem_props(struct elem_set_trial *trial,
snd_ctl_elem_info_t *info)
{
unsigned int items;
unsigned int i;
const char *label;
int err;
items = snd_ctl_elem_info_get_items(info);
if (items != sizeof(labels) / sizeof(labels[0]))
return -EIO;
/* Enumerate and validate all of labels registered to this element. */
for (i = 0; i < items; ++i) {
snd_ctl_elem_info_set_item(info, i);
err = snd_ctl_elem_info(trial->handle, info);
if (err < 0)
return err;
label = snd_ctl_elem_info_get_item_name(info);
if (strncmp(label, labels[i], strlen(labels[i])) != 0)
return -EIO;
}
return 0;
}
static int get_ctl_enum_item_index(snd_ctl_t *handle, snd_ctl_elem_info_t *info,
char **ptrp)
{
char *ptr = *ptrp;
int items, i, len;
const char *name;
items = snd_ctl_elem_info_get_items(info);
if (items <= 0)
return -1;
for (i = 0; i < items; i++)
{
snd_ctl_elem_info_set_item(info, i);
if (snd_ctl_elem_info(handle, info) < 0)
return -1;
name = snd_ctl_elem_info_get_item_name(info);
len = strlen(name);
if (! strncmp(name, ptr, len))
{
if (! ptr[len] || ptr[len] == ',' || ptr[len] == '\n')
{
ptr += len;
*ptrp = ptr;
return i;
}
}
}
return -1;
}
status_t ALSAControl::getmax(const char *name, unsigned int &max)
{
if (!mHandle) {
LOGE("Control not initialized");
return NO_INIT;
}
LOGV("%s(%s, %d)", __FUNCTION__, name, max);
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
snd_ctl_elem_id_set_name(id, name);
snd_ctl_elem_info_set_id(info, id);
int ret = snd_ctl_elem_info(mHandle, info);
if (ret < 0) {
LOGE("Control '%s' cannot get element info: %d", name, ret);
return BAD_VALUE;
}
max = snd_ctl_elem_info_get_max(info);
return NO_ERROR;
}
/**
* \brief Get information for an HCTL element
* \param elem HCTL element
* \param info HCTL element information
* \return 0 otherwise a negative error code on failure
*/
int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t *info)
{
assert(elem);
assert(elem->hctl);
assert(info);
info->id = elem->id;
return snd_ctl_elem_info(elem->hctl->ctl, info);
}
int V4LRadioControl::volume() const
{
const QString ctlName("Line DAC Playback Volume");
const QString card("hw:0");
int volume = 0;
int err;
static snd_ctl_t *handle = NULL;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *control;
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_value_alloca(&control);
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); /* MIXER */
snd_ctl_elem_id_set_name(id, ctlName.toAscii());
if ((err = snd_ctl_open(&handle, card.toAscii(), 0)) < 0) {
return 0;
}
snd_ctl_elem_info_set_id(info, id);
if ((err = snd_ctl_elem_info(handle, info)) < 0) {
snd_ctl_close(handle);
handle = NULL;
return 0;
}
snd_ctl_elem_info_get_id(info, id); /* FIXME: Remove it when hctl find works ok !!! */
snd_ctl_elem_value_set_id(control, id);
snd_ctl_close(handle);
handle = NULL;
snd_hctl_t *hctl;
snd_hctl_elem_t *elem;
if ((err = snd_hctl_open(&hctl, card.toAscii(), 0)) < 0) {
return 0;
}
if ((err = snd_hctl_load(hctl)) < 0) {
return 0;
}
elem = snd_hctl_find_elem(hctl, id);
if (elem)
volume = vol(elem);
snd_hctl_close(hctl);
return (volume/118.0) * 100;
}
status_t ALSAControl::set(const char *name, const char *value)
{
if (!mHandle) {
LOGE("Control not initialized");
return NO_INIT;
}
LOGV("%s(%s, %s)", __FUNCTION__, name, value);
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
snd_ctl_elem_id_set_name(id, name);
snd_ctl_elem_info_set_id(info, id);
int ret = snd_ctl_elem_info(mHandle, info);
if (ret < 0) {
LOGE("Control '%s' cannot get element info: %d", name, ret);
return BAD_VALUE;
}
int items = snd_ctl_elem_info_get_items(info);
for (int i = 0; i < items; i++) {
snd_ctl_elem_info_set_item(info, i);
ret = snd_ctl_elem_info(mHandle, info);
if (ret < 0) continue;
if (strcmp(value, snd_ctl_elem_info_get_item_name(info)) == 0)
return set(name, i, -1);
}
LOGE("Control '%s' has no enumerated value of '%s'", name, value);
return BAD_VALUE;
}
static int execute_cset(snd_ctl_t *ctl, const char *cset)
{
const char *pos;
int err;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *value;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_malloc(&id);
snd_ctl_elem_value_malloc(&value);
snd_ctl_elem_info_malloc(&info);
err = __snd_ctl_ascii_elem_id_parse(id, cset, &pos);
if (err < 0)
goto __fail;
while (*pos && isspace(*pos))
pos++;
if (!*pos) {
uc_error("undefined value for cset >%s<", cset);
err = -EINVAL;
goto __fail;
}
snd_ctl_elem_value_set_id(value, id);
snd_ctl_elem_info_set_id(info, id);
err = snd_ctl_elem_read(ctl, value);
if (err < 0)
goto __fail;
err = snd_ctl_elem_info(ctl, info);
if (err < 0)
goto __fail;
err = snd_ctl_ascii_value_parse(ctl, value, info, pos);
if (err < 0)
goto __fail;
err = snd_ctl_elem_write(ctl, value);
if (err < 0)
goto __fail;
err = 0;
__fail:
if (id != NULL)
free(id);
if (value != NULL)
free(value);
if (info != NULL)
free(info);
return err;
}
/* Operations for elements in an element set with iec958 type. */
static int add_iec958_elem_set(struct elem_set_trial *trial,
snd_ctl_elem_info_t *info)
{
int err;
snd_ctl_elem_info_get_id(info, trial->id);
err = snd_ctl_elem_add_iec958(trial->handle, trial->id);
if (err < 0)
return err;
/*
* In historical reason, the above API is not allowed to fill all of
* fields in identification data.
*/
return snd_ctl_elem_info(trial->handle, info);
}
static int config_enumerated(snd_config_t *n, snd_ctl_t *handle,
snd_ctl_elem_info_t *info, int doit)
{
const char *str;
long val;
long long lval;
unsigned int idx, items;
switch (snd_config_get_type(n)) {
case SND_CONFIG_TYPE_INTEGER:
snd_config_get_integer(n, &val);
return val;
case SND_CONFIG_TYPE_INTEGER64:
snd_config_get_integer64(n, &lval);
return (int) lval;
case SND_CONFIG_TYPE_STRING:
snd_config_get_string(n, &str);
break;
case SND_CONFIG_TYPE_COMPOUND:
if (!force_restore || !doit)
return -1;
n = snd_config_iterator_entry(snd_config_iterator_first(n));
return config_enumerated(n, handle, info, doit);
default:
return -1;
}
items = snd_ctl_elem_info_get_items(info);
for (idx = 0; idx < items; idx++) {
int err;
snd_ctl_elem_info_set_item(info, idx);
err = snd_ctl_elem_info(handle, info);
if (err < 0) {
error("snd_ctl_elem_info: %s", snd_strerror(err));
return err;
}
if (strcmp(str, snd_ctl_elem_info_get_item_name(info)) == 0)
return idx;
}
return -1;
}
int V4LRadioControl::getEnumItemIndex(snd_ctl_t *handle, snd_ctl_elem_info_t *info,
const QString &value)
{
int items, i;
items = snd_ctl_elem_info_get_items(info);
if (items <= 0)
return -1;
for (i = 0; i < items; i++)
{
snd_ctl_elem_info_set_item(info, i);
if (snd_ctl_elem_info(handle, info) < 0)
return -1;
QString name = snd_ctl_elem_info_get_item_name(info);
if(name == value)
{
return i;
}
}
return -1;
}
bool LegacyAmixerControl::accessHW(bool receive, string &error)
{
CAutoLog autoLog(getConfigurableElement(), "ALSA", isDebugEnabled());
#ifdef SIMULATION
if (receive) {
memset(getBlackboardLocation(), 0, getSize());
}
log_info("%s ALSA Element Instance: %s\t\t(Control Element: %s)",
receive ? "Reading" : "Writing",
getConfigurableElement()->getPath().c_str(),
getControlName().c_str());
return true;
#endif
int ret;
// Mixer handle
snd_ctl_t *sndCtrl;
uint32_t value;
uint32_t index;
uint32_t elementCount;
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_value_t *control;
logControlInfo(receive);
// Check parameter type is ok (deferred error, no exceptions available :-()
if (!isTypeSupported()) {
error = "Parameter type not supported.";
return false;
}
int cardNumber = getCardNumber();
if (cardNumber < 0) {
error = "Card " + getCardName() + " not found. Error: " + strerror(cardNumber);
return false;
}
#ifdef ANDROID
if ((ret = snd_ctl_hw_open(&sndCtrl, NULL, cardNumber, 0)) < 0) {
error = snd_strerror(ret);
return false;
}
#else
// Create device name
ostringstream deviceName;
deviceName << "hw:" << cardNumber;
// Open sound control
if ((ret = snd_ctl_open(&sndCtrl, deviceName.str().c_str(), 0)) < 0) {
error = snd_strerror(ret);
return false;
}
#endif
// Allocate in stack
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_value_alloca(&control);
// Set interface
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
string controlName = getControlName();
// Set name or id
if (isdigit(controlName[0])) {
snd_ctl_elem_id_set_numid(id, asInteger(controlName));
} else {
snd_ctl_elem_id_set_name(id, controlName.c_str());
}
// Init info id
snd_ctl_elem_info_set_id(info, id);
// Get info
if ((ret = snd_ctl_elem_info(sndCtrl, info)) < 0) {
error = "ALSA: Unable to get element info " + controlName +
": " + snd_strerror(ret);
// Close sound control
snd_ctl_close(sndCtrl);
return false;
}
// Get type
snd_ctl_elem_type_t eType = snd_ctl_elem_info_get_type(info);
// Get element count
elementCount = snd_ctl_elem_info_get_count(info);
uint32_t scalarSize = getScalarSize();
// If size defined in the PFW different from alsa mixer control size, return an error
if (elementCount * scalarSize != getSize()) {
error = "ALSA: Control element count (" + asString(elementCount) +
") and configurable scalar element count (" +
asString(getSize() / scalarSize) + ") mismatch";
// Close sound control
snd_ctl_close(sndCtrl);
return false;
}
// Set value id
snd_ctl_elem_value_set_id(control, id);
if (receive) {
// Read element
if ((ret = snd_ctl_elem_read(sndCtrl, control)) < 0) {
error = "ALSA: Unable to read element " + controlName +
": " + snd_strerror(ret);
// Close sound control
snd_ctl_close(sndCtrl);
return false;
}
// Go through all indexes
for (index = 0; index < elementCount; index++) {
switch (eType) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
value = snd_ctl_elem_value_get_boolean(control, index);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
value = snd_ctl_elem_value_get_integer(control, index);
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
value = snd_ctl_elem_value_get_integer64(control, index);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
value = snd_ctl_elem_value_get_enumerated(control, index);
break;
case SND_CTL_ELEM_TYPE_BYTES:
value = snd_ctl_elem_value_get_byte(control, index);
break;
default:
error = "ALSA: Unknown control element type while reading alsa element " +
controlName;
return false;
}
if (isDebugEnabled()) {
log_info("Reading alsa element %s, index %u with value %u",
controlName.c_str(), index, value);
}
// Write data to blackboard (beware this code is OK on Little Endian machines only)
toBlackboard(value);
}
} else {
// Go through all indexes
for (index = 0; index < elementCount; index++) {
// Read data from blackboard (beware this code is OK on Little Endian machines only)
value = fromBlackboard();
if (isDebugEnabled()) {
log_info("Writing alsa element %s, index %u with value %u",
controlName.c_str(), index, value);
}
switch (eType) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
snd_ctl_elem_value_set_boolean(control, index, value);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
snd_ctl_elem_value_set_integer(control, index, value);
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
snd_ctl_elem_value_set_integer64(control, index, value);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
snd_ctl_elem_value_set_enumerated(control, index, value);
break;
case SND_CTL_ELEM_TYPE_BYTES:
snd_ctl_elem_value_set_byte(control, index, value);
break;
default:
error = "ALSA: Unknown control element type while writing alsa element " +
controlName;
return false;
}
}
// Write element
if ((ret = snd_ctl_elem_write(sndCtrl, control)) < 0) {
error = "ALSA: Unable to write element " + controlName +
": " + snd_strerror(ret);
// Close sound control
snd_ctl_close(sndCtrl);
return false;
}
}
// Close sound control
snd_ctl_close(sndCtrl);
return true;
}
static int check_elem_set_props(struct elem_set_trial *trial)
{
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
unsigned int numid;
unsigned int index;
unsigned int i;
unsigned int j;
int err;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_info_set_id(info, trial->id);
numid = snd_ctl_elem_id_get_numid(trial->id);
index = snd_ctl_elem_id_get_index(trial->id);
for (i = 0; i < trial->element_count; ++i) {
snd_ctl_elem_info_set_index(info, index + i);
/*
* In Linux 4.0 or former, ioctl(SNDRV_CTL_IOCTL_ELEM_ADD)
* doesn't fill all of fields for identification.
*/
if (numid > 0)
snd_ctl_elem_info_set_numid(info, numid + i);
err = snd_ctl_elem_info(trial->handle, info);
if (err < 0)
return err;
/* Check some common properties. */
if (snd_ctl_elem_info_get_type(info) != trial->type)
return -EIO;
if (snd_ctl_elem_info_get_count(info) != trial->member_count)
return -EIO;
for (j = 0; j < 4; ++j) {
if (snd_ctl_elem_info_get_dimension(info, j) !=
trial->dimension[j])
return -EIO;
}
/*
* In a case of IPC, this is the others. But in this case,
* it's myself.
*/
if (snd_ctl_elem_info_get_owner(info) != getpid())
return -EIO;
/*
* Just adding an element set by userspace applications,
* included elements are initially locked.
*/
if (!snd_ctl_elem_info_is_locked(info))
return -EIO;
/* Check type-specific properties. */
if (trial->check_elem_props != NULL) {
err = trial->check_elem_props(trial, info);
if (err < 0)
return err;
}
snd_ctl_elem_info_get_id(info, id);
err = snd_ctl_elem_unlock(trial->handle, id);
if (err < 0)
return err;
}
return 0;
}
static int amixer_control(t_amixer *x, int argc, t_atom *argv, int roflag)
{
int err;
snd_ctl_t *handle;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *control;
char *ptr;
unsigned int idx, count;
long tmp;
snd_ctl_elem_type_t type;
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_value_alloca(&control);
if (argc < 1) {
error("Specify a full control identifier: [[iface=<iface>,][name='name',][index=<index>,][device=<device>,][subdevice=<subdevice>]]|[numid=<numid>]\n");
return -EINVAL;
}
if(A_FLOAT==argv->a_type){
snd_ctl_elem_id_set_numid(id, atom_getint(argv));
if(0)
{
error("Wrong control identifier: %d\n", atom_getint(argv));
return -EINVAL;
}
} else {
if (parse_control_id(atom_getsymbol(argv)->s_name, id)) {
error("Wrong control identifier: %s\n", atom_getsymbol(argv)->s_name);
return -EINVAL;
}
}
if ((err = snd_ctl_open(&handle, x->card, 0)) < 0) {
error("Control %s open error: %s\n", x->card, snd_strerror(err));
return err;
}
snd_ctl_elem_info_set_id(info, id);
if ((err = snd_ctl_elem_info(handle, info)) < 0) {
error("Control %s cinfo error: %s\n", x->card, snd_strerror(err));
return err;
}
snd_ctl_elem_info_get_id(info, id); /* FIXME: Remove it when hctl find works ok !!! */
type = snd_ctl_elem_info_get_type(info);
count = snd_ctl_elem_info_get_count(info);
snd_ctl_elem_value_set_id(control, id);
if (!roflag) {
t_float atom_float = atom_getfloat(argv+1);
int atom_isfloat = (A_FLOAT==(argv+1)->a_type);
post("now setting");
ptr = atom_getsymbol(argv+1)->s_name;
for (idx = 0; idx < count && idx < 128 && ptr && *ptr; idx++) {
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
tmp = 0;
if(atom_isfloat){
tmp=(atom_float>0)?1:0;
} else if (!strncasecmp(ptr, "on", 2) || !strncasecmp(ptr, "up", 2)) {
tmp = 1;
ptr += 2;
} else if (!strncasecmp(ptr, "yes", 3)) {
tmp = 1;
ptr += 3;
} else if (!strncasecmp(ptr, "toggle", 6)) {
tmp = snd_ctl_elem_value_get_boolean(control, idx);
tmp = tmp > 0 ? 0 : 1;
ptr += 6;
} else if (isdigit(*ptr)) {
tmp = atoi(ptr) > 0 ? 1 : 0;
while (isdigit(*ptr))
ptr++;
} else {
while (*ptr && *ptr != ',')
ptr++;
}
snd_ctl_elem_value_set_boolean(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
tmp = atom_isfloat?((int)atom_float):get_integer(&ptr,
snd_ctl_elem_info_get_min(info),
snd_ctl_elem_info_get_max(info));
snd_ctl_elem_value_set_integer(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
tmp = atom_isfloat?((int)atom_float):get_integer64(&ptr,
snd_ctl_elem_info_get_min64(info),
snd_ctl_elem_info_get_max64(info));
snd_ctl_elem_value_set_integer64(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
tmp = atom_isfloat?((int)atom_float):get_integer(&ptr, 0, snd_ctl_elem_info_get_items(info) - 1);
snd_ctl_elem_value_set_enumerated(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_BYTES:
tmp = atom_isfloat?((int)atom_float):get_integer(&ptr, 0, 255);
snd_ctl_elem_value_set_byte(control, idx, tmp);
break;
default:
break;
}
if (!strchr(atom_getsymbol(argv+1)->s_name, ','))
ptr = atom_getsymbol(argv+1)->s_name;
else if (*ptr == ',')
ptr++;
}
if ((err = snd_ctl_elem_write(handle, control)) < 0) {
error("Control %s element write error: %s\n", x->card, snd_strerror(err));
return err;
}
}
snd_ctl_close(handle);
if (1) {
snd_hctl_t *hctl;
snd_hctl_elem_t *elem;
if ((err = snd_hctl_open(&hctl, x->card, 0)) < 0) {
error("Control %s open error: %s\n", x->card, snd_strerror(err));
return err;
}
if ((err = snd_hctl_load(hctl)) < 0) {
error("Control %s load error: %s\n", x->card, snd_strerror(err));
return err;
}
elem = snd_hctl_find_elem(hctl, id);
if (elem)
show_control(x->card, " ", elem, LEVEL_BASIC | LEVEL_ID);
else
printf("Could not find the specified element\n");
snd_hctl_close(hctl);
}
}
void analog_volume_init(void)
{
snd_ctl_elem_info_t *info;
int i;
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_info_set_interface(info, SND_CTL_ELEM_IFACE_MIXER);
for (i = 0; i < 10; i++) {
snd_ctl_elem_info_set_name(info, DAC_VOLUME_NAME);
snd_ctl_elem_info_set_numid(info, 0);
snd_ctl_elem_info_set_index(info, i);
if (snd_ctl_elem_info(ctl, info) < 0)
break;
dac_max = snd_ctl_elem_info_get_max(info);
}
if (i < output_channels - 1)
dac_volumes = i;
else
dac_volumes = output_channels;
snd_ctl_elem_info_set_name(info, DAC_SENSE_NAME);
for (i = 0; i < dac_volumes; i++) {
snd_ctl_elem_info_set_numid(info, 0);
snd_ctl_elem_info_set_index(info, i);
if (snd_ctl_elem_info(ctl, info) < 0)
break;
}
dac_senses = i;
if (dac_senses > 0) {
snd_ctl_elem_info_set_numid(info, 0);
snd_ctl_elem_info_set_index(info, 0);
snd_ctl_elem_info(ctl, info);
dac_sense_items = snd_ctl_elem_info_get_items(info);
for (i = 0; i < dac_sense_items; i++) {
snd_ctl_elem_info_set_item(info, i);
snd_ctl_elem_info(ctl, info);
dac_sense_name[i] = strdup(snd_ctl_elem_info_get_item_name(info));
}
}
for (i = 0; i < 10; i++) {
snd_ctl_elem_info_set_name(info, ADC_VOLUME_NAME);
snd_ctl_elem_info_set_numid(info, 0);
snd_ctl_elem_info_set_index(info, i);
if (snd_ctl_elem_info(ctl, info) < 0)
break;
adc_max = snd_ctl_elem_info_get_max(info);
}
if (i < input_channels - 1)
adc_volumes = i;
else
adc_volumes = input_channels;
snd_ctl_elem_info_set_name(info, ADC_SENSE_NAME);
for (i = 0; i < adc_volumes; i++) {
snd_ctl_elem_info_set_numid(info, 0);
snd_ctl_elem_info_set_index(info, i);
if (snd_ctl_elem_info(ctl, info) < 0)
break;
}
adc_senses = i;
if (adc_senses > 0) {
snd_ctl_elem_info_set_numid(info, 0);
snd_ctl_elem_info_set_index(info, 0);
snd_ctl_elem_info(ctl, info);
adc_sense_items = snd_ctl_elem_info_get_items(info);
for (i = 0; i < adc_sense_items; i++) {
snd_ctl_elem_info_set_item(info, i);
snd_ctl_elem_info(ctl, info);
adc_sense_name[i] = strdup(snd_ctl_elem_info_get_item_name(info));
}
}
for (i = 0; i < 10; i++) {
snd_ctl_elem_info_set_name(info, IPGA_VOLUME_NAME);
snd_ctl_elem_info_set_numid(info, 0);
snd_ctl_elem_info_set_index(info, i);
if (snd_ctl_elem_info(ctl, info) < 0)
break;
}
if (i < input_channels - 1)
ipga_volumes = i;
else
ipga_volumes = input_channels;
}
static int cset(int argc, char *argv[], int roflag, int keep_handle)
{
int err;
static snd_ctl_t *handle = NULL;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *control;
char *ptr;
unsigned int idx, count;
long tmp;
snd_ctl_elem_type_t type;
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_value_alloca(&control);
if (argc < 1)
return -EINVAL;
if (parse_control_id(argv[0], id))
return -EINVAL;
if (handle == NULL && (err = snd_ctl_open(&handle, card, 0)) < 0)
return err;
snd_ctl_elem_info_set_id(info, id);
if ((err = snd_ctl_elem_info(handle, info)) < 0)
{
if (!keep_handle)
{
snd_ctl_close(handle);
handle = NULL;
}
return err;
}
snd_ctl_elem_info_get_id(info, id);
type = snd_ctl_elem_info_get_type(info);
count = snd_ctl_elem_info_get_count(info);
snd_ctl_elem_value_set_id(control, id);
if (!roflag)
{
ptr = argv[1];
for (idx = 0; idx < count && idx < 128 && ptr && *ptr; idx++)
{
switch (type)
{
case SND_CTL_ELEM_TYPE_BOOLEAN:
tmp = 0;
if (!strncasecmp(ptr, "on", 2) || !strncasecmp(ptr, "up", 2))
{
tmp = 1;
ptr += 2;
}
else if (!strncasecmp(ptr, "yes", 3))
{
tmp = 1;
ptr += 3;
}
else if (!strncasecmp(ptr, "toggle", 6))
{
tmp = snd_ctl_elem_value_get_boolean(control, idx);
tmp = tmp > 0 ? 0 : 1;
ptr += 6;
}
else if (isdigit(*ptr))
{
tmp = atoi(ptr) > 0 ? 1 : 0;
while (isdigit(*ptr))
ptr++;
}
else
{
while (*ptr && *ptr != ',')
ptr++;
}
snd_ctl_elem_value_set_boolean(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
tmp = get_integer(&ptr,
snd_ctl_elem_info_get_min(info),
snd_ctl_elem_info_get_max(info));
snd_ctl_elem_value_set_integer(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
tmp = get_integer64(&ptr,
snd_ctl_elem_info_get_min64(info),
snd_ctl_elem_info_get_max64(info));
snd_ctl_elem_value_set_integer64(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
tmp = get_ctl_enum_item_index(handle, info, &ptr);
if (tmp < 0)
tmp = get_integer(&ptr, 0, snd_ctl_elem_info_get_items(info) - 1);
snd_ctl_elem_value_set_enumerated(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_BYTES:
tmp = get_integer(&ptr, 0, 255);
snd_ctl_elem_value_set_byte(control, idx, tmp);
break;
default:
break;
}
if (!strchr(argv[1], ','))
ptr = argv[1];
else if (*ptr == ',')
ptr++;
}
if ((err = snd_ctl_elem_write(handle, control)) < 0)
{
if (!keep_handle)
{
snd_ctl_close(handle);
handle = NULL;
}
return err;
}
}
if (! keep_handle)
{
snd_ctl_close(handle);
handle = NULL;
}
if (!quiet)
{
snd_hctl_t *hctl;
snd_hctl_elem_t *elem;
if ((err = snd_hctl_open(&hctl, card, 0)) < 0)
return err;
if ((err = snd_hctl_load(hctl)) < 0)
return err;
elem = snd_hctl_find_elem(hctl, id);
if (elem)
show_control(" ", elem, LEVEL_BASIC | LEVEL_ID);
snd_hctl_close(hctl);
}
return 0;
}
void main( int argc, char *argv[] )
{
struct structArgs cmdArgs;
int errNum;
// ************************************************************************
// ALSA control elements.
// ************************************************************************
snd_ctl_t *ctl; // Simple control handle.
snd_ctl_elem_id_t *id; // Simple control element id.
snd_ctl_elem_value_t *control; // Simple control element value.
snd_ctl_elem_type_t type; // Simple control element type.
snd_ctl_elem_info_t *info; // Simple control info container.
// ************************************************************************
// Get command line parameters.
// ************************************************************************
argp_parse( &argp, argc, argv, 0, 0, &cmdArgs );
printf( "Card = %i\n", cmdArgs.card );
printf( "Control = %i\n", cmdArgs.control );
printf( "Value 1 = %i\n", cmdArgs.value1 );
printf( "Value 2 = %i\n", cmdArgs.value2 );
// ************************************************************************
// Set up ALSA control.
// ************************************************************************
sprintf( cmdArgs.deviceID, "hw:%i", cmdArgs.card );
printf( "Device ID = %s.\n", cmdArgs.deviceID );
if ( snd_ctl_open( &ctl, cmdArgs.deviceID, 1 ) < 0 )
{
printf( "Error opening control.\n" );
return;
}
// Initialise a simple control element id structure.
snd_ctl_elem_id_alloca( &id );
snd_ctl_elem_id_set_numid( id, cmdArgs.control );
// Initialise info element.
snd_ctl_elem_info_alloca( &info );
snd_ctl_elem_info_set_numid( info, cmdArgs.control );
// Is the control valid?
if ( snd_ctl_elem_info( ctl, info ) < 0 )
{
printf( "Error getting control element info.\n" );
return;
}
// Find type of control.
// either:
// SND_CTL_ELEM_TYPE_INTEGER,
// SND_CTL_ELEM_TYPE_INTEGER64,
// SND_CTL_ELEM_TYPE_ENUMERATED, etc.
// Only interested in INTEGER.
type = snd_ctl_elem_info_get_type( info );
if ( type != SND_CTL_ELEM_TYPE_INTEGER )
{
printf( "Control type is not integer.\n" );
printf( "Type = %s\n", type );
return;
}
// ************************************************************************
// Get some information for selected control.
// ************************************************************************
printf( "Min value for control = %d\n", snd_ctl_elem_info_get_min( info ));
printf( "Max value for control = %d\n", snd_ctl_elem_info_get_max( info ));
printf( "Step value for control = %d\n", snd_ctl_elem_info_get_step( info ));
// Initialise the control element value container.
snd_ctl_elem_value_alloca( &control );
snd_ctl_elem_value_set_id( control, id );
// ************************************************************************
// Set values for selected control.
// ************************************************************************
snd_ctl_elem_value_set_integer( control, 0, cmdArgs.value1 );
if ( snd_ctl_elem_write( ctl, control ) < 0 )
printf( "Error setting L volume" );
else
printf( "Set L volume to %d.\n", cmdArgs.value1 );
snd_ctl_elem_value_set_integer( control, 1, cmdArgs.value2 );
if ( snd_ctl_elem_write( ctl, control ) < 0 )
printf( "Error setting R volume" );
else
printf( "Set R volume to %d.\n", cmdArgs.value2 );
// ************************************************************************
// Clean up.
// ************************************************************************
snd_ctl_close( ctl );
return;
}
void V4LRadioControl::callAmixer(const QString& target, const QString& value)
{
int err;
long tmp;
unsigned int count;
static snd_ctl_t *handle = NULL;
QString card("hw:0");
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *control;
snd_ctl_elem_type_t type;
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_value_alloca(&control);
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); /* MIXER */
// in amixer parse func
// char target[64];
// e.g. PGA CAPTure Switch
snd_ctl_elem_id_set_name(id, target.toAscii());
if (handle == NULL && (err = snd_ctl_open(&handle, card.toAscii(), 0)) < 0)
{
return;
}
snd_ctl_elem_info_set_id(info, id);
if ((err = snd_ctl_elem_info(handle, info)) < 0)
{
snd_ctl_close(handle);
handle = NULL;
return;
}
snd_ctl_elem_info_get_id(info, id); /* FIXME: Remove it when hctl find works ok !!! */
type = snd_ctl_elem_info_get_type(info);
count = snd_ctl_elem_info_get_count(info);
snd_ctl_elem_value_set_id(control, id);
tmp = 0;
for (uint idx = 0; idx < count && idx < 128; idx++)
{
switch (type)
{
case SND_CTL_ELEM_TYPE_BOOLEAN:
#ifdef MULTIMEDIA_MAEMO_DEBUG
qDebug() << "SND_CTL_ELEM_TYPE_BOOLEAN" << SND_CTL_ELEM_TYPE_BOOLEAN;
#endif
if ((value == "on") ||(value == "1"))
{
tmp = 1;
}
snd_ctl_elem_value_set_boolean(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
tmp = getEnumItemIndex(handle, info, value);
snd_ctl_elem_value_set_enumerated(control, idx, tmp);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
#ifdef MULTIMEDIA_MAEMO_DEBUG
qDebug() << "SND_CTL_ELEM_TYPE_INTEGER" << SND_CTL_ELEM_TYPE_INTEGER;
#endif
tmp = atoi(value.toAscii());
if (tmp < snd_ctl_elem_info_get_min(info))
tmp = snd_ctl_elem_info_get_min(info);
else if (tmp > snd_ctl_elem_info_get_max(info))
tmp = snd_ctl_elem_info_get_max(info);
snd_ctl_elem_value_set_integer(control, idx, tmp);
break;
default:
break;
}
}
if ((err = snd_ctl_elem_write(handle, control)) < 0) {
snd_ctl_close(handle);
handle = NULL;
return;
}
snd_ctl_close(handle);
handle = NULL;
}
static int check_audio_route()
{
int err, idx, i;
snd_ctl_t *handle;
const char *route_ctrl_name = "Speaker Function";
snd_ctl_elem_value_t * elem_value;
snd_ctl_elem_info_t *info;
snd_ctl_elem_list_t elist;
snd_ctl_elem_id_t *eid;
snd_ctl_elem_value_alloca(&elem_value);
snd_ctl_elem_info_alloca(&info);
//snd_ctl_elem_value_set_numid(elem_value, 54);
if ((err = snd_ctl_open(&handle, "hw:0", 0)) < 0) {
db_msg("Open control error: %s\n", snd_strerror(err));
goto check_audio_route_err;
}
db_msg("card=%d\n", handle->card);
memset(&elist, 0, sizeof(elist));
if (snd_ctl_elem_list(handle, &elist) < 0) {
db_msg("snd_ctl_elem_list 1 failed\n");
goto check_audio_route_err;
}
eid = calloc(elist.count, sizeof(snd_ctl_elem_id_t));
elist.space = elist.count;
elist.pids = eid;
if (snd_ctl_elem_list(handle, &elist) < 0) {
db_msg("snd_ctl_elem_list 2 failed\n");
goto check_audio_route_err;
}
for (i = 0; i < elist.count; ++i) {
info->id.numid = eid[i].numid;
if ((err = snd_ctl_elem_info(handle, info)) < 0) {
db_msg("Cannot find the given element from control\n");
goto check_audio_route_err;
}
//db_msg("name[%d]=%s\n", i, snd_ctl_elem_info_get_name(info));
if (!strcmp(snd_ctl_elem_info_get_name(info), route_ctrl_name)) {
db_msg("route ctrl found!!!\n");
break;
}
}
snd_ctl_elem_value_set_numid(elem_value, info->id.numid);
if ((err = snd_ctl_elem_read(handle,elem_value)) < 0) {
db_msg("snd_ctl_elem_read error: %s\n", snd_strerror(err));
goto check_audio_route_err;
}
db_msg("numid=%d\n", snd_ctl_elem_value_get_numid(elem_value));
db_msg("name=%s\n", snd_ctl_elem_value_get_name(elem_value));
//to set the new value
snd_ctl_elem_value_set_enumerated(elem_value,0, 1);
if ((err = snd_ctl_elem_write(handle,elem_value)) < 0) {
db_msg("snd_ctl_elem_write error: %s\n", snd_strerror(err));
goto check_audio_route_err;
}
//read it out again to check if we did set the registers.
if ((err = snd_ctl_elem_read(handle,elem_value)) < 0) {
db_msg("snd_ctl_elem_read error: %s\n", snd_strerror(err));
goto check_audio_route_err;
}
db_msg("after: %d\n", snd_ctl_elem_value_get_enumerated(elem_value, 0));
snd_ctl_close(handle);
return 0;
check_audio_route_err:
snd_ctl_close(handle);
return -1;
}
int hw_audio_set(const char *name, int value)
{
static snd_ctl_t *handle = NULL;
int err;
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_value_t *control;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_value_alloca(&control);
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
snd_ctl_elem_id_set_name(id, name);
snd_ctl_elem_info_set_id(info, id);
if (handle == NULL &&
(err = snd_ctl_open(&handle, "default", 0)) < 0)
{
LOGE("Control default open error: %s\n", snd_strerror(err));
return 0;
}
int ret = snd_ctl_elem_info(handle, info);
if (ret < 0)
{
LOGE("Cannot find the given element from control default ret=%d %s ",
ret, snd_strerror(ret));
return 0;
}
snd_ctl_elem_type_t type = snd_ctl_elem_info_get_type(info);
snd_ctl_elem_info_get_id(info, id);
snd_ctl_elem_value_set_id(control, id);
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
snd_ctl_elem_value_set_boolean(control, 0, value);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
snd_ctl_elem_value_set_integer(control, 0, value);
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
snd_ctl_elem_value_set_integer64(control, 0, value);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
snd_ctl_elem_value_set_enumerated(control, 0, value);
break;
case SND_CTL_ELEM_TYPE_BYTES:
snd_ctl_elem_value_set_byte(control, 0, value);
break;
default:
break;
}
ret = snd_ctl_elem_write(handle, control);
if(ret <0)
{
LOGE("Control default load error: %s\n", snd_strerror(ret));
}
return 1;
}
status_t ALSAControl::set(const char *name, unsigned int value, int index)
{
if (!mHandle) {
ALOGE("Control not initialized");
return NO_INIT;
}
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
snd_ctl_elem_id_set_name(id, name);
snd_ctl_elem_info_set_id(info, id);
int ret = snd_ctl_elem_info(mHandle, info);
if (ret < 0) {
ALOGE("Control '%s' cannot get element info: %d", name, ret);
return BAD_VALUE;
}
int count = snd_ctl_elem_info_get_count(info);
if (index >= count) {
ALOGE("Control '%s' index is out of range (%d >= %d)", name, index, count);
return BAD_VALUE;
}
if (index == -1)
index = 0; // Range over all of them
else
count = index + 1; // Just do the one specified
snd_ctl_elem_type_t type = snd_ctl_elem_info_get_type(info);
snd_ctl_elem_value_t *control;
snd_ctl_elem_value_alloca(&control);
snd_ctl_elem_info_get_id(info, id);
snd_ctl_elem_value_set_id(control, id);
for (int i = index; i < count; i++)
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
snd_ctl_elem_value_set_boolean(control, i, value);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
snd_ctl_elem_value_set_integer(control, i, value);
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
snd_ctl_elem_value_set_integer64(control, i, value);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
snd_ctl_elem_value_set_enumerated(control, i, value);
break;
case SND_CTL_ELEM_TYPE_BYTES:
snd_ctl_elem_value_set_byte(control, i, value);
break;
default:
break;
}
ret = snd_ctl_elem_write(mHandle, control);
return (ret < 0) ? BAD_VALUE : NO_ERROR;
}
static int get_control(snd_ctl_t *handle, snd_ctl_elem_id_t *id, snd_config_t *top)
{
snd_ctl_elem_value_t *ctl;
snd_ctl_elem_info_t *info;
snd_config_t *control, *comment, *item, *value;
const char *s;
char buf[256];
unsigned int idx;
int err;
unsigned int device, subdevice, index;
const char *name;
snd_ctl_elem_type_t type;
unsigned int count;
snd_ctl_elem_value_alloca(&ctl);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_info_set_id(info, id);
err = snd_ctl_elem_info(handle, info);
if (err < 0) {
error("Cannot read control info '%s': %s", id_str(id), snd_strerror(err));
return err;
}
if (snd_ctl_elem_info_is_inactive(info) ||
!snd_ctl_elem_info_is_readable(info))
return 0;
snd_ctl_elem_value_set_id(ctl, id);
err = snd_ctl_elem_read(handle, ctl);
if (err < 0) {
error("Cannot read control '%s': %s", id_str(id), snd_strerror(err));
return err;
}
err = snd_config_compound_add(top, num_str(snd_ctl_elem_info_get_numid(info)), 0, &control);
if (err < 0) {
error("snd_config_compound_add: %s", snd_strerror(err));
return err;
}
err = snd_config_compound_add(control, "comment", 1, &comment);
if (err < 0) {
error("snd_config_compound_add: %s", snd_strerror(err));
return err;
}
buf[0] = '\0';
buf[1] = '\0';
if (snd_ctl_elem_info_is_readable(info))
strcat(buf, " read");
if (snd_ctl_elem_info_is_writable(info))
strcat(buf, " write");
if (snd_ctl_elem_info_is_inactive(info))
strcat(buf, " inactive");
if (snd_ctl_elem_info_is_volatile(info))
strcat(buf, " volatile");
if (snd_ctl_elem_info_is_locked(info))
strcat(buf, " locked");
if (snd_ctl_elem_info_is_user(info))
strcat(buf, " user");
err = snd_config_string_add(comment, "access", buf + 1);
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
type = snd_ctl_elem_info_get_type(info);
device = snd_ctl_elem_info_get_device(info);
subdevice = snd_ctl_elem_info_get_subdevice(info);
index = snd_ctl_elem_info_get_index(info);
name = snd_ctl_elem_info_get_name(info);
count = snd_ctl_elem_info_get_count(info);
s = snd_ctl_elem_type_name(type);
err = snd_config_string_add(comment, "type", s);
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
err = snd_config_integer_add(comment, "count", count);
if (err < 0) {
error("snd_config_integer_add: %s", snd_strerror(err));
return err;
}
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
break;
case SND_CTL_ELEM_TYPE_INTEGER:
{
long min = snd_ctl_elem_info_get_min(info);
long max = snd_ctl_elem_info_get_max(info);
long step = snd_ctl_elem_info_get_step(info);
if (step)
sprintf(buf, "%li - %li (step %li)", min, max, step);
else
sprintf(buf, "%li - %li", min, max);
err = snd_config_string_add(comment, "range", buf);
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
if (snd_ctl_elem_info_is_tlv_readable(info)) {
err = add_tlv_comments(handle, id, info, comment);
if (err < 0)
return err;
}
break;
}
case SND_CTL_ELEM_TYPE_INTEGER64:
{
long long min = snd_ctl_elem_info_get_min64(info);
long long max = snd_ctl_elem_info_get_max64(info);
long long step = snd_ctl_elem_info_get_step64(info);
if (step)
sprintf(buf, "%Li - %Li (step %Li)", min, max, step);
else
sprintf(buf, "%Li - %Li", min, max);
err = snd_config_string_add(comment, "range", buf);
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
break;
}
case SND_CTL_ELEM_TYPE_ENUMERATED:
{
unsigned int items;
err = snd_config_compound_add(comment, "item", 1, &item);
if (err < 0) {
error("snd_config_compound_add: %s", snd_strerror(err));
return err;
}
items = snd_ctl_elem_info_get_items(info);
for (idx = 0; idx < items; idx++) {
snd_ctl_elem_info_set_item(info, idx);
err = snd_ctl_elem_info(handle, info);
if (err < 0) {
error("snd_ctl_card_info: %s", snd_strerror(err));
return err;
}
err = snd_config_string_add(item, num_str(idx), snd_ctl_elem_info_get_item_name(info));
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
}
break;
}
default:
break;
}
s = snd_ctl_elem_iface_name(snd_ctl_elem_info_get_interface(info));
err = snd_config_string_add(control, "iface", s);
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
if (device != 0) {
err = snd_config_integer_add(control, "device", device);
if (err < 0) {
error("snd_config_integer_add: %s", snd_strerror(err));
return err;
}
}
if (subdevice != 0) {
err = snd_config_integer_add(control, "subdevice", subdevice);
if (err < 0) {
error("snd_config_integer_add: %s", snd_strerror(err));
return err;
}
}
err = snd_config_string_add(control, "name", name);
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
if (index != 0) {
err = snd_config_integer_add(control, "index", index);
if (err < 0) {
error("snd_config_integer_add: %s", snd_strerror(err));
return err;
}
}
switch (type) {
case SND_CTL_ELEM_TYPE_BYTES:
case SND_CTL_ELEM_TYPE_IEC958:
{
size_t size = type == SND_CTL_ELEM_TYPE_BYTES ?
count : sizeof(snd_aes_iec958_t);
char buf[size * 2 + 1];
char *p = buf;
char *hex = "0123456789abcdef";
const unsigned char *bytes =
(const unsigned char *)snd_ctl_elem_value_get_bytes(ctl);
for (idx = 0; idx < size; idx++) {
int v = bytes[idx];
*p++ = hex[v >> 4];
*p++ = hex[v & 0x0f];
}
*p = '\0';
err = snd_config_string_add(control, "value", buf);
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
return 0;
}
default:
break;
}
if (count == 1) {
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
err = snd_config_string_add(control, "value", snd_ctl_elem_value_get_boolean(ctl, 0) ? "true" : "false");
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
return 0;
case SND_CTL_ELEM_TYPE_INTEGER:
err = snd_config_integer_add(control, "value", snd_ctl_elem_value_get_integer(ctl, 0));
if (err < 0) {
error("snd_config_integer_add: %s", snd_strerror(err));
return err;
}
return 0;
case SND_CTL_ELEM_TYPE_INTEGER64:
err = snd_config_integer64_add(control, "value", snd_ctl_elem_value_get_integer64(ctl, 0));
if (err < 0) {
error("snd_config_integer64_add: %s", snd_strerror(err));
return err;
}
return 0;
case SND_CTL_ELEM_TYPE_ENUMERATED:
{
unsigned int v = snd_ctl_elem_value_get_enumerated(ctl, 0);
snd_config_t *c;
err = snd_config_search(item, num_str(v), &c);
if (err == 0) {
err = snd_config_get_string(c, &s);
assert(err == 0);
err = snd_config_string_add(control, "value", s);
} else {
err = snd_config_integer_add(control, "value", v);
}
if (err < 0)
error("snd_config add: %s", snd_strerror(err));
return 0;
}
default:
error("Unknown control type: %d\n", type);
return -EINVAL;
}
}
err = snd_config_compound_add(control, "value", 1, &value);
if (err < 0) {
error("snd_config_compound_add: %s", snd_strerror(err));
return err;
}
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
for (idx = 0; idx < count; idx++) {
err = snd_config_string_add(value, num_str(idx), snd_ctl_elem_value_get_boolean(ctl, idx) ? "true" : "false");
if (err < 0) {
error("snd_config_string_add: %s", snd_strerror(err));
return err;
}
}
break;
case SND_CTL_ELEM_TYPE_INTEGER:
for (idx = 0; idx < count; idx++) {
err = snd_config_integer_add(value, num_str(idx), snd_ctl_elem_value_get_integer(ctl, idx));
if (err < 0) {
error("snd_config_integer_add: %s", snd_strerror(err));
return err;
}
}
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
for (idx = 0; idx < count; idx++) {
err = snd_config_integer64_add(value, num_str(idx), snd_ctl_elem_value_get_integer64(ctl, idx));
if (err < 0) {
error("snd_config_integer64_add: %s", snd_strerror(err));
return err;
}
}
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
for (idx = 0; idx < count; idx++) {
unsigned int v = snd_ctl_elem_value_get_enumerated(ctl, idx);
snd_config_t *c;
err = snd_config_search(item, num_str(v), &c);
if (err == 0) {
err = snd_config_get_string(c, &s);
assert(err == 0);
err = snd_config_string_add(value, num_str(idx), s);
} else {
err = snd_config_integer_add(value, num_str(idx), v);
}
if (err < 0) {
error("snd_config add: %s", snd_strerror(err));
return err;
}
}
break;
default:
error("Unknown control type: %d\n", type);
return -EINVAL;
}
return 0;
}
status_t ALSAControl::get(const char *name, unsigned int &value, int index)
{
if (!mHandle) {
ALOGE("Control not initialized");
return NO_INIT;
}
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_value_t *control;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_value_alloca(&control);
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
snd_ctl_elem_id_set_name(id, name);
snd_ctl_elem_info_set_id(info, id);
int ret = snd_ctl_elem_info(mHandle, info);
if (ret < 0) {
ALOGE("Control '%s' cannot get element info: %d", name, ret);
return BAD_VALUE;
}
int count = snd_ctl_elem_info_get_count(info);
if (index >= count) {
ALOGE("Control '%s' index is out of range (%d >= %d)", name, index, count);
return BAD_VALUE;
}
snd_ctl_elem_info_get_id(info, id);
snd_ctl_elem_value_set_id(control, id);
ret = snd_ctl_elem_read(mHandle, control);
if (ret < 0) {
ALOGE("Control '%s' cannot read element value: %d", name, ret);
return BAD_VALUE;
}
snd_ctl_elem_type_t type = snd_ctl_elem_info_get_type(info);
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
value = snd_ctl_elem_value_get_boolean(control, index);
break;
case SND_CTL_ELEM_TYPE_INTEGER:
value = snd_ctl_elem_value_get_integer(control, index);
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
value = snd_ctl_elem_value_get_integer64(control, index);
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
value = snd_ctl_elem_value_get_enumerated(control, index);
break;
case SND_CTL_ELEM_TYPE_BYTES:
value = snd_ctl_elem_value_get_byte(control, index);
break;
default:
return BAD_VALUE;
}
return NO_ERROR;
}
static int execute_cset(snd_ctl_t *ctl, const char *cset, unsigned int type)
{
const char *pos;
int err;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *value;
snd_ctl_elem_info_t *info;
unsigned int *res = NULL;
snd_ctl_elem_id_malloc(&id);
snd_ctl_elem_value_malloc(&value);
snd_ctl_elem_info_malloc(&info);
err = __snd_ctl_ascii_elem_id_parse(id, cset, &pos);
if (err < 0)
goto __fail;
while (*pos && isspace(*pos))
pos++;
if (!*pos) {
uc_error("undefined value for cset >%s<", cset);
err = -EINVAL;
goto __fail;
}
snd_ctl_elem_info_set_id(info, id);
err = snd_ctl_elem_info(ctl, info);
if (err < 0)
goto __fail;
if (type == SEQUENCE_ELEMENT_TYPE_CSET_TLV) {
if (!snd_ctl_elem_info_is_tlv_writable(info)) {
err = -EINVAL;
goto __fail;
}
err = read_tlv_file(&res, pos);
if (err < 0)
goto __fail;
err = snd_ctl_elem_tlv_write(ctl, id, res);
if (err < 0)
goto __fail;
} else {
snd_ctl_elem_value_set_id(value, id);
err = snd_ctl_elem_read(ctl, value);
if (err < 0)
goto __fail;
if (type == SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE)
err = binary_file_parse(value, info, pos);
else
err = snd_ctl_ascii_value_parse(ctl, value, info, pos);
if (err < 0)
goto __fail;
err = snd_ctl_elem_write(ctl, value);
if (err < 0)
goto __fail;
}
err = 0;
__fail:
if (id != NULL)
free(id);
if (value != NULL)
free(value);
if (info != NULL)
free(info);
if (res != NULL)
free(res);
return err;
}
