int put_infos(int vol_min, int vol_max,
snd_hctl_elem_t *volume_elem, snd_hctl_elem_t *mute_elem,
snd_ctl_elem_value_t *volume_ctl, snd_ctl_elem_value_t *mute_ctl,
char *format)
{
int volume;
int volume_percent;
bool mute_switch;
char switch_state[4];
snd_hctl_elem_read(volume_elem, volume_ctl);
snd_hctl_elem_read(mute_elem, mute_ctl);
volume = (int)snd_ctl_elem_value_get_integer(volume_ctl, 0);
mute_switch = (bool)snd_ctl_elem_value_get_boolean(mute_ctl, 0);
volume_percent = (int)(100.0f * ((float)volume - vol_min) / (vol_max - vol_min));
if (mute_switch == true)
sprintf(switch_state, "on");
else
sprintf(switch_state, "off");
if (strstr(format, "%s") == NULL)
printf(format, volume_percent);
else if (strstr(format, "%i") == NULL)
printf(format, switch_state);
else
printf(format, switch_state, volume_percent);
printf("\n");
fflush(stdout);
return EXIT_SUCCESS;
}
static int elem_read_enum(selem_none_t *s)
{
snd_ctl_elem_value_t *ctl;
unsigned int idx;
int err;
int type;
selem_ctl_t *c;
type = CTL_GLOBAL_ENUM;
if ( (s->selem.caps & (SM_CAP_CENUM | SM_CAP_PENUM)) == (SM_CAP_CENUM | SM_CAP_PENUM) )
type = CTL_GLOBAL_ENUM;
else if (s->selem.caps & SM_CAP_PENUM)
type = CTL_PLAYBACK_ENUM;
else if (s->selem.caps & SM_CAP_CENUM)
type = CTL_CAPTURE_ENUM;
c = &s->ctls[type];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < s->str[0].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
s->str[0].vol[idx] = snd_ctl_elem_value_get_enumerated(ctl, idx1);
}
return 0;
}
static int set_enum_item_ops(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel,
unsigned int item)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
snd_ctl_elem_value_t *ctl;
snd_hctl_elem_t *helem;
int err;
int type;
if ((unsigned int) channel >= s->str[0].channels) {
return -EINVAL;
}
type = CTL_GLOBAL_ENUM;
helem = s->ctls[type].elem;
if (!helem) {
type = CTL_PLAYBACK_ENUM;
helem = s->ctls[type].elem;
}
if (!helem) {
type = CTL_CAPTURE_ENUM;
helem = s->ctls[type].elem;
}
assert(helem);
if (item >= (unsigned int)s->ctls[type].max) {
return -EINVAL;
}
snd_ctl_elem_value_alloca(&ctl);
err = snd_hctl_elem_read(helem, ctl);
if (err < 0) {
return err;
}
snd_ctl_elem_value_set_enumerated(ctl, channel, item);
return snd_hctl_elem_write(helem, ctl);
}
static int
_phoneui_utils_sound_volume_mute_changed_cb(snd_hctl_elem_t *elem, unsigned int mask)
{
snd_ctl_elem_value_t *control;
enum SoundControlType type;
int mute;
if (mask == SND_CTL_EVENT_MASK_REMOVE)
return 0;
if (mask & SND_CTL_EVENT_MASK_VALUE) {
snd_ctl_elem_value_alloca(&control);
snd_hctl_elem_read(elem, control);
type = _phoneui_utils_sound_volume_mute_element_to_type(elem);
if (type != CONTROL_END) {
mute = phoneui_utils_sound_volume_mute_get(type);
g_debug("Got alsa mute change for control type '%d', new value: %d",
type, mute);
if (_phoneui_utils_sound_volume_mute_changed_callback) {
_phoneui_utils_sound_volume_mute_changed_callback(type, mute, _phoneui_utils_sound_volume_mute_changed_userdata);
}
}
}
return 0;
}
long
phoneui_utils_sound_volume_raw_get(enum SoundControlType type)
{
int err;
long value;
unsigned int i,count;
snd_ctl_elem_value_t *control;
snd_ctl_elem_value_alloca(&control);
snd_hctl_elem_t *elem;
count = controls[STATE_INDEX][type].count;
elem = controls[STATE_INDEX][type].element;
if (!elem || !count) {
return 0;
}
err = snd_hctl_elem_read(elem, control);
if (err < 0) {
g_warning("%s", snd_strerror(err));
return -1;
}
value = 0;
/* FIXME: possible long overflow */
for (i = 0 ; i < count ; i++) {
value += snd_ctl_elem_value_get_integer(control, i);
}
value /= count;
return value;
}
bool CAESinkALSA::GetELD(snd_hctl_t *hctl, int device, CAEDeviceInfo& info, bool& badHDMI)
{
badHDMI = false;
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *einfo;
snd_ctl_elem_value_t *control;
snd_hctl_elem_t *elem;
snd_ctl_elem_id_alloca(&id);
memset(id, 0, snd_ctl_elem_id_sizeof());
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_PCM);
snd_ctl_elem_id_set_name (id, "ELD" );
snd_ctl_elem_id_set_device (id, device);
elem = snd_hctl_find_elem(hctl, id);
if (!elem)
return false;
snd_ctl_elem_info_alloca(&einfo);
memset(einfo, 0, snd_ctl_elem_info_sizeof());
if (snd_hctl_elem_info(elem, einfo) < 0)
return false;
if (!snd_ctl_elem_info_is_readable(einfo))
return false;
if (snd_ctl_elem_info_get_type(einfo) != SND_CTL_ELEM_TYPE_BYTES)
return false;
snd_ctl_elem_value_alloca(&control);
memset(control, 0, snd_ctl_elem_value_sizeof());
if (snd_hctl_elem_read(elem, control) < 0)
return false;
int dataLength = snd_ctl_elem_info_get_count(einfo);
/* if there is no ELD data, then its a bad HDMI device, either nothing attached OR an invalid nVidia HDMI device
* OR the driver doesn't properly support ELD (notably ATI/AMD, 2012-05) */
if (!dataLength)
badHDMI = true;
else
CAEELDParser::Parse(
(const uint8_t*)snd_ctl_elem_value_get_bytes(control),
dataLength,
info
);
info.m_deviceType = AE_DEVTYPE_HDMI;
return true;
}
static int elem_write_switch(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t *ctl;
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_integer(ctl, idx, !!(s->str[dir].sw & (1 << idx)));
if ((err = snd_hctl_elem_write(c->elem, ctl)) < 0)
return err;
return 0;
}
static int elem_write_switch_constant(selem_none_t *s, selem_ctl_type_t type, int val)
{
snd_ctl_elem_value_t *ctl;
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_integer(ctl, idx, !!val);
if ((err = snd_hctl_elem_write(c->elem, ctl)) < 0)
return err;
return 0;
}
static int elem_write_volume(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t *ctl;
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_integer(ctl, idx, from_user(s, dir, c, s->str[dir].vol[idx]));
if ((err = snd_hctl_elem_write(c->elem, ctl)) < 0)
return err;
return 0;
}
static int elem_read_volume(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t *ctl;
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < s->str[dir].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
s->str[dir].vol[idx] = to_user(s, dir, c, snd_ctl_elem_value_get_integer(ctl, idx1));
}
return 0;
}
static int elem_read_route(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t *ctl;
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < s->str[dir].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
if (!snd_ctl_elem_value_get_integer(ctl, idx1 * c->values + idx1))
s->str[dir].sw &= ~(1 << idx);
}
return 0;
}
int V4LRadioControl::vol(snd_hctl_elem_t *elem) const
{
const QString card("hw:0");
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);
if ((err = snd_hctl_elem_info(elem, info)) < 0) {
return 0;
}
snd_hctl_elem_get_id(elem, id);
snd_hctl_elem_read(elem, control);
return snd_ctl_elem_value_get_integer(control, 0);
}
static int get_enum_item_ops(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel,
unsigned int *itemp)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
snd_ctl_elem_value_t *ctl;
snd_hctl_elem_t *helem;
int err;
if ((unsigned int) channel >= s->str[0].channels)
return -EINVAL;
helem = s->ctls[CTL_GLOBAL_ENUM].elem;
if (!helem) helem = s->ctls[CTL_PLAYBACK_ENUM].elem;
if (!helem) helem = s->ctls[CTL_CAPTURE_ENUM].elem;
assert(helem);
snd_ctl_elem_value_alloca(&ctl);
err = snd_hctl_elem_read(helem, ctl);
if (! err)
*itemp = snd_ctl_elem_value_get_enumerated(ctl, channel);
return err;
}
/*
Get the current value of the routing control
*/
static unsigned int utils_alsa_get_route()
{
int err;
snd_ctl_elem_value_t *control;
if(utils_alsa_init() || !utils_alsa_route_elem || !utils_alsa_route_elem_id)
return -1;
debug("utils_alsa_get_route: start ...\n");
snd_ctl_elem_value_alloca(&control);
snd_ctl_elem_value_set_id(control, utils_alsa_route_elem_id);
if((err=snd_hctl_elem_read(utils_alsa_route_elem, control))){
error("utils_alsa_get_route: read failed: %s\n", snd_strerror(err));
return -1;
}
unsigned int v=snd_ctl_elem_value_get_enumerated(control, 0);
debug("utils_alsa_get_route: read value=%ud\n", v);
return v;
}
int
phoneui_utils_sound_volume_mute_get(enum SoundControlType type)
{
int err;
snd_ctl_elem_value_t *control;
snd_ctl_elem_value_alloca(&control);
snd_hctl_elem_t *elem;
elem = controls[STATE_INDEX][type].mute_element;
if (!elem) {
return -1;
}
err = snd_hctl_elem_read(elem, control);
if (err < 0) {
g_warning("%s", snd_strerror(err));
return -1;
}
return !snd_ctl_elem_value_get_boolean(control, 0);
}
static int selem_write_main(snd_mixer_elem_t *elem)
{
selem_none_t *s;
unsigned int idx;
int err;
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
s = snd_mixer_elem_get_private(elem);
if (s->ctls[CTL_GLOBAL_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_PLAYBACK_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_CAPTURE_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_SINGLE].elem) {
if (s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_write_volume(s, SM_PLAY, CTL_SINGLE);
else
err = elem_write_switch(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_VOLUME].elem) {
err = elem_write_volume(s, SM_PLAY, CTL_GLOBAL_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
if (s->ctls[CTL_PLAYBACK_SWITCH].elem && s->ctls[CTL_CAPTURE_SWITCH].elem)
err = elem_write_switch_constant(s, CTL_GLOBAL_SWITCH, 1);
else
err = elem_write_switch(s, SM_PLAY, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_VOLUME].elem) {
err = elem_write_volume(s, SM_PLAY, CTL_PLAYBACK_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_SWITCH].elem) {
err = elem_write_switch(s, SM_PLAY, CTL_PLAYBACK_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_ROUTE].elem) {
err = elem_write_route(s, SM_PLAY, CTL_PLAYBACK_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_VOLUME].elem) {
err = elem_write_volume(s, SM_CAPT, CTL_CAPTURE_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SWITCH].elem) {
err = elem_write_switch(s, SM_CAPT, CTL_CAPTURE_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_ROUTE].elem) {
err = elem_write_route(s, SM_CAPT, CTL_CAPTURE_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SOURCE].elem) {
snd_ctl_elem_value_t *ctl;
selem_ctl_t *c = &s->ctls[CTL_CAPTURE_SOURCE];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++) {
if (s->str[SM_CAPT].sw & (1 << idx))
snd_ctl_elem_value_set_enumerated(ctl, idx, s->capture_item);
}
if ((err = snd_hctl_elem_write(c->elem, ctl)) < 0)
return err;
/* update the element, don't remove */
err = selem_read(elem);
if (err < 0)
return err;
}
return 0;
}
static int selem_read(snd_mixer_elem_t *elem)
{
selem_none_t *s;
unsigned int idx;
int err = 0;
long pvol[32], cvol[32];
unsigned int psw, csw;
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
s = snd_mixer_elem_get_private(elem);
memcpy(pvol, s->str[SM_PLAY].vol, sizeof(pvol));
memset(&s->str[SM_PLAY].vol, 0, sizeof(s->str[SM_PLAY].vol));
psw = s->str[SM_PLAY].sw;
s->str[SM_PLAY].sw = ~0U;
memcpy(cvol, s->str[SM_CAPT].vol, sizeof(cvol));
memset(&s->str[SM_CAPT].vol, 0, sizeof(s->str[SM_CAPT].vol));
csw = s->str[SM_CAPT].sw;
s->str[SM_CAPT].sw = ~0U;
if (s->ctls[CTL_GLOBAL_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_CAPTURE_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_PLAYBACK_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_PLAYBACK_VOLUME].elem)
err = elem_read_volume(s, SM_PLAY, CTL_PLAYBACK_VOLUME);
else if (s->ctls[CTL_GLOBAL_VOLUME].elem)
err = elem_read_volume(s, SM_PLAY, CTL_GLOBAL_VOLUME);
else if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_read_volume(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
if ((s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH)) == 0) {
s->str[SM_PLAY].sw = 0;
goto __skip_pswitch;
}
if (s->ctls[CTL_PLAYBACK_SWITCH].elem) {
err = elem_read_switch(s, SM_PLAY, CTL_PLAYBACK_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
err = elem_read_switch(s, SM_PLAY, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_BOOLEAN) {
err = elem_read_switch(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_ROUTE].elem) {
err = elem_read_route(s, SM_PLAY, CTL_PLAYBACK_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_ROUTE].elem) {
err = elem_read_route(s, SM_PLAY, CTL_GLOBAL_ROUTE);
if (err < 0)
return err;
}
__skip_pswitch:
if (s->ctls[CTL_CAPTURE_VOLUME].elem)
err = elem_read_volume(s, SM_CAPT, CTL_CAPTURE_VOLUME);
else if (s->ctls[CTL_GLOBAL_VOLUME].elem)
err = elem_read_volume(s, SM_CAPT, CTL_GLOBAL_VOLUME);
else if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_read_volume(s, SM_CAPT, CTL_SINGLE);
if (err < 0)
return err;
if ((s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_CSWITCH)) == 0) {
s->str[SM_CAPT].sw = 0;
goto __skip_cswitch;
}
if (s->ctls[CTL_CAPTURE_SWITCH].elem) {
err = elem_read_switch(s, SM_CAPT, CTL_CAPTURE_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
err = elem_read_switch(s, SM_CAPT, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_BOOLEAN) {
err = elem_read_switch(s, SM_CAPT, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_ROUTE].elem) {
err = elem_read_route(s, SM_CAPT, CTL_CAPTURE_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_ROUTE].elem) {
err = elem_read_route(s, SM_CAPT, CTL_GLOBAL_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SOURCE].elem) {
snd_ctl_elem_value_t *ctl;
selem_ctl_t *c = &s->ctls[CTL_CAPTURE_SOURCE];
snd_ctl_elem_value_alloca(&ctl);
err = snd_hctl_elem_read(c->elem, ctl);
if (err < 0)
return err;
for (idx = 0; idx < s->str[SM_CAPT].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
if (snd_ctl_elem_value_get_enumerated(ctl, idx1) != s->capture_item)
s->str[SM_CAPT].sw &= ~(1 << idx);
}
}
__skip_cswitch:
if (memcmp(pvol, s->str[SM_PLAY].vol, sizeof(pvol)) ||
psw != s->str[SM_PLAY].sw ||
memcmp(cvol, s->str[SM_CAPT].vol, sizeof(cvol)) ||
csw != s->str[SM_CAPT].sw)
return 1;
return 0;
}
/**************************************************************************
* ALSA_CheckSetVolume [internal]
*
* Helper function for Alsa volume queries. This tries to simplify
* the process of managing the volume. All parameters are optional
* (pass NULL to ignore or not use).
* Return values are MMSYSERR_NOERROR on success, or !0 on failure;
* error codes are normalized into the possible documented return
* values from waveOutGetVolume.
*/
int ALSA_CheckSetVolume(snd_hctl_t *hctl, int *out_left, int *out_right,
int *out_min, int *out_max, int *out_step,
int *new_left, int *new_right)
{
int rc = MMSYSERR_NOERROR;
int value_count = 0;
snd_hctl_elem_t * elem = NULL;
snd_ctl_elem_info_t * eleminfop = NULL;
snd_ctl_elem_value_t * elemvaluep = NULL;
snd_ctl_elem_id_t * elemidp = NULL;
const char *names[] = {"PCM Playback Volume", "Line Playback Volume", NULL};
const char **name;
#define EXIT_ON_ERROR(f,txt,exitcode) do \
{ \
int err; \
if ( (err = (f) ) < 0) \
{ \
ERR(txt " failed: %s\n", snd_strerror(err)); \
rc = exitcode; \
goto out; \
} \
} while(0)
if (! hctl)
return MMSYSERR_NOTSUPPORTED;
/* Allocate areas to return information about the volume */
EXIT_ON_ERROR(snd_ctl_elem_id_malloc(&elemidp), "snd_ctl_elem_id_malloc", MMSYSERR_NOMEM);
EXIT_ON_ERROR(snd_ctl_elem_value_malloc (&elemvaluep), "snd_ctl_elem_value_malloc", MMSYSERR_NOMEM);
EXIT_ON_ERROR(snd_ctl_elem_info_malloc (&eleminfop), "snd_ctl_elem_info_malloc", MMSYSERR_NOMEM);
snd_ctl_elem_id_clear(elemidp);
snd_ctl_elem_value_clear(elemvaluep);
snd_ctl_elem_info_clear(eleminfop);
/* Setup and find an element id that exactly matches the characteristic we want
** FIXME: It is probably short sighted to hard code and fixate on PCM Playback Volume */
for( name = names; *name; name++ )
{
snd_ctl_elem_id_set_name(elemidp, *name);
snd_ctl_elem_id_set_interface(elemidp, SND_CTL_ELEM_IFACE_MIXER);
elem = snd_hctl_find_elem(hctl, elemidp);
if (elem)
{
/* Read and return volume information */
EXIT_ON_ERROR(snd_hctl_elem_info(elem, eleminfop), "snd_hctl_elem_info", MMSYSERR_NOTSUPPORTED);
value_count = snd_ctl_elem_info_get_count(eleminfop);
if (out_min || out_max || out_step)
{
if (!snd_ctl_elem_info_is_readable(eleminfop))
{
ERR("snd_ctl_elem_info_is_readable returned false; cannot return info\n");
rc = MMSYSERR_NOTSUPPORTED;
goto out;
}
if (out_min)
*out_min = snd_ctl_elem_info_get_min(eleminfop);
if (out_max)
*out_max = snd_ctl_elem_info_get_max(eleminfop);
if (out_step)
*out_step = snd_ctl_elem_info_get_step(eleminfop);
}
if (out_left || out_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (out_left)
*out_left = snd_ctl_elem_value_get_integer(elemvaluep, 0);
if (out_right)
{
if (value_count == 1)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 0);
else if (value_count == 2)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 1);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while getting volume info\n", value_count);
rc = -1;
goto out;
}
}
}
/* Set the volume */
if (new_left || new_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (new_left)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_left);
if (new_right)
{
if (value_count == 1)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_right);
else if (value_count == 2)
snd_ctl_elem_value_set_integer(elemvaluep, 1, *new_right);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while setting volume info\n", value_count);
rc = -1;
goto out;
}
}
EXIT_ON_ERROR(snd_hctl_elem_write(elem, elemvaluep), "snd_hctl_elem_write", MMSYSERR_NOTSUPPORTED);
}
break;
}
}
if( !*name )
{
ERR("Could not find '{PCM,Line} Playback Volume' element\n");
rc = MMSYSERR_NOTSUPPORTED;
}
#undef EXIT_ON_ERROR
out:
if (elemvaluep)
snd_ctl_elem_value_free(elemvaluep);
if (eleminfop)
snd_ctl_elem_info_free(eleminfop);
if (elemidp)
snd_ctl_elem_id_free(elemidp);
return rc;
}
static int show_control(const char* card, const char *space, snd_hctl_elem_t *elem,
int level)
{
int err;
unsigned int item, idx;
unsigned int count;
snd_ctl_elem_type_t type;
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);
if ((err = snd_hctl_elem_info(elem, info)) < 0) {
error("Control %s snd_hctl_elem_info error: %s\n", card, snd_strerror(err));
return err;
}
if (level & LEVEL_ID) {
snd_hctl_elem_get_id(elem, id);
show_control_id(id);
printf("\n");
}
count = snd_ctl_elem_info_get_count(info);
type = snd_ctl_elem_info_get_type(info);
printf("%s; type=%s,access=%s,values=%i", space, control_type(info), control_access(info), count);
switch (type) {
case SND_CTL_ELEM_TYPE_INTEGER:
printf(",min=%li,max=%li,step=%li\n",
snd_ctl_elem_info_get_min(info),
snd_ctl_elem_info_get_max(info),
snd_ctl_elem_info_get_step(info));
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
printf(",min=%Li,max=%Li,step=%Li\n",
snd_ctl_elem_info_get_min64(info),
snd_ctl_elem_info_get_max64(info),
snd_ctl_elem_info_get_step64(info));
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
{
unsigned int items = snd_ctl_elem_info_get_items(info);
printf(",items=%u\n", items);
for (item = 0; item < items; item++) {
snd_ctl_elem_info_set_item(info, item);
if ((err = snd_hctl_elem_info(elem, info)) < 0) {
error("Control %s element info error: %s\n", card, snd_strerror(err));
return err;
}
printf("%s; Item #%u '%s'\n", space, item, snd_ctl_elem_info_get_item_name(info));
}
break;
}
default:
printf("\n");
break;
}
if (level & LEVEL_BASIC) {
if ((err = snd_hctl_elem_read(elem, control)) < 0) {
error("Control %s element read error: %s\n", card, snd_strerror(err));
return err;
}
printf("%s: values=", space);
for (idx = 0; idx < count; idx++) {
if (idx > 0)
printf(",");
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
printf("%s", snd_ctl_elem_value_get_boolean(control, idx) ? "on" : "off");
break;
case SND_CTL_ELEM_TYPE_INTEGER:
printf("%li", snd_ctl_elem_value_get_integer(control, idx));
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
printf("%Li", snd_ctl_elem_value_get_integer64(control, idx));
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
printf("%u", snd_ctl_elem_value_get_enumerated(control, idx));
break;
case SND_CTL_ELEM_TYPE_BYTES:
printf("0x%02x", snd_ctl_elem_value_get_byte(control, idx));
break;
default:
printf("?");
break;
}
}
printf("\n");
}
return 0;
}
static int show_control(const char *space, snd_hctl_elem_t *elem,
int level)
{
int err;
unsigned int item, idx, count, *tlv;
snd_ctl_elem_type_t type;
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_value_t *control;
snd_aes_iec958_t iec958;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_value_alloca(&control);
if ((err = snd_hctl_elem_info(elem, info)) < 0)
{
error("Control %s snd_hctl_elem_info error: %s\n", card, snd_strerror(err));
return err;
}
if (level & LEVEL_ID)
{
snd_hctl_elem_get_id(elem, id);
show_control_id(id);
printf("\n");
}
count = snd_ctl_elem_info_get_count(info);
type = snd_ctl_elem_info_get_type(info);
printf("%s; type=%s,access=%s,values=%i", space, control_type(info), control_access(info), count);
switch (type)
{
case SND_CTL_ELEM_TYPE_INTEGER:
printf(",min=%li,max=%li,step=%li\n",
snd_ctl_elem_info_get_min(info),
snd_ctl_elem_info_get_max(info),
snd_ctl_elem_info_get_step(info));
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
printf(",min=%Li,max=%Li,step=%Li\n",
snd_ctl_elem_info_get_min64(info),
snd_ctl_elem_info_get_max64(info),
snd_ctl_elem_info_get_step64(info));
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
{
unsigned int items = snd_ctl_elem_info_get_items(info);
printf(",items=%u\n", items);
for (item = 0; item < items; item++)
{
snd_ctl_elem_info_set_item(info, item);
if ((err = snd_hctl_elem_info(elem, info)) < 0)
{
error("Control %s element info error: %s\n", card, snd_strerror(err));
return err;
}
printf("%s; Item #%u '%s'\n", space, item, snd_ctl_elem_info_get_item_name(info));
}
break;
}
default:
printf("\n");
break;
}
if (level & LEVEL_BASIC)
{
if (!snd_ctl_elem_info_is_readable(info))
goto __skip_read;
if ((err = snd_hctl_elem_read(elem, control)) < 0)
{
error("Control %s element read error: %s\n", card, snd_strerror(err));
return err;
}
printf("%s: values=", space);
for (idx = 0; idx < count; idx++)
{
if (idx > 0)
printf(",");
switch (type)
{
case SND_CTL_ELEM_TYPE_BOOLEAN:
printf("%s", snd_ctl_elem_value_get_boolean(control, idx) ? "on" : "off");
break;
case SND_CTL_ELEM_TYPE_INTEGER:
printf("%li", snd_ctl_elem_value_get_integer(control, idx));
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
printf("%Li", snd_ctl_elem_value_get_integer64(control, idx));
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
printf("%u", snd_ctl_elem_value_get_enumerated(control, idx));
break;
case SND_CTL_ELEM_TYPE_BYTES:
printf("0x%02x", snd_ctl_elem_value_get_byte(control, idx));
break;
case SND_CTL_ELEM_TYPE_IEC958:
snd_ctl_elem_value_get_iec958(control, &iec958);
printf("[AES0=0x%02x AES1=0x%02x AES2=0x%02x AES3=0x%02x]",
iec958.status[0], iec958.status[1],
iec958.status[2], iec958.status[3]);
break;
default:
printf("?");
break;
}
}
printf("\n");
__skip_read:
if (!snd_ctl_elem_info_is_tlv_readable(info))
goto __skip_tlv;
tlv = malloc(4096);
if ((err = snd_hctl_elem_tlv_read(elem, tlv, 4096)) < 0)
{
error("Control %s element TLV read error: %s\n", card, snd_strerror(err));
free(tlv);
return err;
}
decode_tlv(strlen(space), tlv, 4096);
free(tlv);
}
__skip_tlv:
return 0;
}