static int alloc_mixer_state(struct audio_route *ar)
{
unsigned int i;
unsigned int j;
if (!ar) {
ALOGE("%s: invalid audio_route", __func__);
return -1;
}
ar->num_mixer_ctls = mixer_get_num_ctls(ar->mixer);
ar->mixer_state = malloc(ar->num_mixer_ctls * sizeof(struct mixer_state));
if (!ar->mixer_state)
return -1;
for (i = 0; i < ar->num_mixer_ctls; i++) {
ar->mixer_state[i].ctl = mixer_get_ctl(ar->mixer, i);
ar->mixer_state[i].ctl_vals = mixer_ctl_get_num_values(ar->mixer_state[i].ctl);
ar->mixer_state[i].ignored = 0;
if (ar->mixer_state[i].ctl_vals > MAX_CTL_VALS) {
ar->mixer_state[i].ctl_vals = MAX_CTL_VALS;
}
for (j = 0; j < ar->mixer_state[i].ctl_vals; j++) {
ar->mixer_state[i].old_value[j] =
mixer_ctl_get_value(ar->mixer_state[i].ctl, j);
ar->mixer_state[i].new_value[j] = ar->mixer_state[i].old_value[j];
}
}
return 0;
}
static void tinymix_list_controls(struct mixer *mixer, int print_all)
{
struct mixer_ctl *ctl;
const char *name, *type;
unsigned int num_ctls, num_values;
unsigned int i;
num_ctls = mixer_get_num_ctls(mixer);
printf("Number of controls: %u\n", num_ctls);
if (print_all)
printf("ctl\ttype\tnum\t%-40svalue\n", "name");
else
printf("ctl\ttype\tnum\t%-40s\n", "name");
for (i = 0; i < num_ctls; i++) {
ctl = mixer_get_ctl(mixer, i);
name = mixer_ctl_get_name(ctl);
type = mixer_ctl_get_type_string(ctl);
num_values = mixer_ctl_get_num_values(ctl);
printf("%u\t%s\t%u\t%-40s", i, type, num_values, name);
if (print_all)
tinymix_detail_control(mixer, name);
printf("\n");
}
}
int list(int argc, char **argv) {
int nMixer = -1;
if (argc == 3)
nMixer = atoi(argv[2]);
if (argc != 3 || nMixer < 0 || nMixer > 7) {
printf("Usage: ainfo list <card number>\n"
"where <card number> is between 0 and 7\n");
return 0;
}
mixer *m = mixer_open(nMixer);
if (m == NULL) {
printf("Unable to open card #%d\n", nMixer);
return 0;
}
int count = mixer_get_num_ctls(m);
printf("Found %d controls:\n", count);
for (int i = 0; i < count; i++) {
char name[64], type[64];
mixer_ctl *ctl = mixer_get_ctl(m, i);
mixer_ctl_get_name(ctl, name, sizeof(name));
printf("%d: %s (0x%x)\n", i, name, mixer_ctl_get_type(ctl));
}
return 0;
}
static void tinymix_detail_control(struct mixer *mixer, unsigned int id,
int print_all)
{
struct mixer_ctl *ctl;
enum mixer_ctl_type type;
unsigned int num_values;
char buffer[256];
unsigned int i;
int min, max;
if (id >= mixer_get_num_ctls(mixer)) {
fprintf(stderr, "Invalid mixer control\n");
return;
}
ctl = mixer_get_ctl(mixer, id);
mixer_ctl_get_name(ctl, buffer, sizeof(buffer));
type = mixer_ctl_get_type(ctl);
num_values = mixer_ctl_get_num_values(ctl);
if (print_all)
printf("%s:", buffer);
for (i = 0; i < num_values; i++) {
switch (type)
{
case MIXER_CTL_TYPE_INT:
printf(" %d", mixer_ctl_get_value(ctl, i));
break;
case MIXER_CTL_TYPE_BOOL:
printf(" %s", mixer_ctl_get_value(ctl, i) ? "On" : "Off");
break;
case MIXER_CTL_TYPE_ENUM:
tinymix_print_enum(ctl, print_all);
break;
case MIXER_CTL_TYPE_BYTE:
printf(" 0x%02x", mixer_ctl_get_value(ctl, i));
break;
default:
printf(" unknown");
break;
};
}
if (print_all) {
if (type == MIXER_CTL_TYPE_INT) {
min = mixer_ctl_get_range_min(ctl);
max = mixer_ctl_get_range_max(ctl);
printf(" (range %d->%d)", min, max);
}
}
printf("\n");
}
static int alloc_mixer_state(struct audio_route *ar)
{
unsigned int i;
unsigned int j;
unsigned int num_values;
struct mixer_ctl *ctl;
bool linked;
ar->num_mixer_ctls = mixer_get_num_ctls(ar->mixer);
ar->mixer_state = malloc(ar->num_mixer_ctls * sizeof(struct mixer_state));
if (!ar->mixer_state)
return -1;
for (i = 0; i < ar->num_mixer_ctls; i++) {
ctl = mixer_get_ctl(ar->mixer, i);
num_values = mixer_ctl_get_num_values(ctl);
ar->mixer_state[i].old_value = malloc(num_values * sizeof(int));
ar->mixer_state[i].new_value = malloc(num_values * sizeof(int));
ar->mixer_state[i].reset_value = malloc(num_values * sizeof(int));
/*
* Get all mixer values for controls with multiple values. If all
* values are the same, set the linked flag.
*/
linked = true;
for (j = 0; j < num_values; j++) {
ar->mixer_state[i].old_value[j] = mixer_ctl_get_value(ctl, j);
ar->mixer_state[i].new_value[j] = ar->mixer_state[i].old_value[j];
/*
* If the next value is different from the last, set linked to
* false.
*/
if ((j > 0) && (ar->mixer_state[i].old_value[j - 1] !=
ar->mixer_state[i].old_value[j])) {
linked = false;
}
}
ar->mixer_state[i].ctl = ctl;
ar->mixer_state[i].old_linked = linked;
ar->mixer_state[i].new_linked = linked;
ar->mixer_state[i].num_values = num_values;
}
return 0;
}
int audio_route_control_set_enum(unsigned int card_slot, char *control_name,
char *string)
{
struct mixer *control_mixer;
struct mixer_ctl *ctl;
const char *name;
unsigned int num_ctls, num_values;
unsigned int i, j;
enum mixer_ctl_type type;
int value;
int ret, mixer_ret;
control_mixer = mixer_open(card_slot);
if (!control_mixer) {
ALOGE("Unable to open the control mixer, aborting.");
return -1;
}
ALOGV("Control mixer open successful.");
num_ctls = mixer_get_num_ctls(control_mixer);
ret = 0;
for (i = 0; i < num_ctls; i++) {
ctl = mixer_get_ctl(control_mixer, i);
name = mixer_ctl_get_name(ctl);
if (name && strcmp(name, control_name) == 0) {
/* Found the control, update and exit */
type = mixer_ctl_get_type(ctl);
if (type == MIXER_CTL_TYPE_ENUM) {
if (mixer_ctl_set_enum_by_string(ctl, string)) {
ALOGE("Error: invalid enum value");
ret = -1;
} else {
ALOGV("Setting %s to string %s", name, string);
}
} else {
ALOGV("Error: only enum types can be set with strings");
ret = -1;
}
break;
}
}
mixer_close(control_mixer);
return ret;
}
int audio_route_control_set_number(unsigned int card_slot, char *control_name,
char *string)
{
struct mixer *control_mixer;
struct mixer_ctl *ctl;
const char *name;
unsigned int num_ctls, num_values;
unsigned int i, j;
enum mixer_ctl_type type;
int value;
int ret, mixer_ret;
control_mixer = mixer_open(card_slot);
if (!control_mixer) {
ALOGE("Unable to open the control mixer, aborting.");
return -1;
}
ALOGV("Control mixer open successful.");
num_ctls = mixer_get_num_ctls(control_mixer);
ret = 0;
for (i = 0; i < num_ctls; i++) {
ctl = mixer_get_ctl(control_mixer, i);
name = mixer_ctl_get_name(ctl);
if (name && strcmp(name, control_name) == 0) {
/* Found the control, update and exit */
value = atoi(string);
num_values = mixer_ctl_get_num_values(ctl);
for (j = 0; j < num_values; j++) {
mixer_ret = mixer_ctl_set_value(ctl, j, value);
if (mixer_ret) {
ALOGE("Error: invalid value (%s to %d)", name, value);
mixer_close(control_mixer);
/* Add up the number of failed controller values */
ret += -1;
}
}
if (ret == 0)
ALOGV("Setting %s to int %d", name, value);
break;
}
}
return ret;
}
static int alloc_mixer_state(struct audio_route *ar)
{
unsigned int i;
ar->num_mixer_ctls = mixer_get_num_ctls(ar->mixer);
ar->mixer_state = malloc(ar->num_mixer_ctls * sizeof(struct mixer_state));
if (!ar->mixer_state)
return -1;
for (i = 0; i < ar->num_mixer_ctls; i++) {
ar->mixer_state[i].ctl = mixer_get_ctl(ar->mixer, i);
/* only get value 0, assume multiple ctl values are the same */
ar->mixer_state[i].old_value = mixer_ctl_get_value(ar->mixer_state[i].ctl, 0);
ar->mixer_state[i].new_value = ar->mixer_state[i].old_value;
}
return 0;
}
TEST_F(MixerTest, tryTinyAlsaTest) {
int hwId = AudioHardware::detectAudioHw();
ASSERT_TRUE(hwId >= 0);
struct mixer* mixerp = mixer_open(hwId);
ASSERT_TRUE(mixerp != NULL);
int num_ctls = mixer_get_num_ctls(mixerp);
LOGI("Number of mixel control %d", num_ctls);
for (int i = 0; i < num_ctls; i++) {
struct mixer_ctl* control = mixer_get_ctl(mixerp, i);
ASSERT_TRUE(control != NULL);
LOGI("Mixer control %s type %s value %d", mixer_ctl_get_name(control),
mixer_ctl_get_type_string(control), mixer_ctl_get_num_values(control));
free(control);
}
// no mixer control for MobilePre. If this assumption fails,
// mixer control should be added.
ASSERT_TRUE(num_ctls == 0);
mixer_close(mixerp);
}
static int alloc_mixer_state(struct audio_route *ar)
{
unsigned int i;
unsigned int j;
unsigned int num_values;
struct mixer_ctl *ctl;
enum mixer_ctl_type type;
ar->num_mixer_ctls = mixer_get_num_ctls(ar->mixer);
ar->mixer_state = malloc(ar->num_mixer_ctls * sizeof(struct mixer_state));
if (!ar->mixer_state)
return -1;
for (i = 0; i < ar->num_mixer_ctls; i++) {
ctl = mixer_get_ctl(ar->mixer, i);
num_values = mixer_ctl_get_num_values(ctl);
ar->mixer_state[i].ctl = ctl;
ar->mixer_state[i].num_values = num_values;
/* Skip unsupported types that are not supported yet in XML */
type = mixer_ctl_get_type(ctl);
if ((type != MIXER_CTL_TYPE_BOOL) && (type != MIXER_CTL_TYPE_INT) &&
(type != MIXER_CTL_TYPE_ENUM))
continue;
ar->mixer_state[i].old_value = malloc(num_values * sizeof(int));
ar->mixer_state[i].new_value = malloc(num_values * sizeof(int));
ar->mixer_state[i].reset_value = malloc(num_values * sizeof(int));
if (type == MIXER_CTL_TYPE_ENUM)
ar->mixer_state[i].old_value[0] = mixer_ctl_get_value(ctl, 0);
else
mixer_ctl_get_array(ctl, ar->mixer_state[i].old_value, num_values);
memcpy(ar->mixer_state[i].new_value, ar->mixer_state[i].old_value,
num_values * sizeof(int));
}
return 0;
}
static void tinymix_list_controls(struct mixer *mixer)
{
struct mixer_ctl *ctl;
const char *type;
unsigned int num_ctls, num_values;
char buffer[256];
unsigned int i;
num_ctls = mixer_get_num_ctls(mixer);
printf("Number of controls: %d\n", num_ctls);
printf("ctl\ttype\tnum\t%-40s value\n", "name");
for (i = 0; i < num_ctls; i++) {
ctl = mixer_get_ctl(mixer, i);
mixer_ctl_get_name(ctl, buffer, sizeof(buffer));
type = mixer_ctl_get_type_string(ctl);
num_values = mixer_ctl_get_num_values(ctl);
printf("%d\t%s\t%d\t%-40s", i, type, num_values, buffer);
tinymix_detail_control(mixer, i, 0);
}
}
int mixer_cache_populate(struct audio_tool_mixer_cache *cache, struct mixer *mixer)
{
struct mixer_ctl *ctl;
struct audio_tool_mixer_control_info *cur;
const char* name;
size_t count, n, v;
int tmp;
if (!cache)
return EINVAL;
if (!mixer)
return EINVAL;
if (cache->ctrls)
free(cache->ctrls);
count = mixer_get_num_ctls(mixer);
cache->count = count;
if (count) {
cache->ctrls = calloc(count, sizeof(struct audio_tool_mixer_control_info));
if (! cache->ctrls)
return -ENOMEM;
}
for (n = 0, cur = cache->ctrls ; n < count ; ++n, ++cur) {
ctl = mixer_get_ctl(mixer, n);
if (!ctl)
return ENODEV;
name = mixer_ctl_get_name(ctl);
if (!name)
return ENODEV;
cur->id = n;
cur->type = mixer_ctl_get_type(ctl);
strcpy(cur->name, name);
cur->num_values = mixer_ctl_get_num_values(ctl);
if (cur->num_values > MAX_NUM_VALUES)
cur->num_values = MAX_NUM_VALUES;
for (v = 0 ; v < cur->num_values ; ++v) {
switch (cur->type) {
case MIXER_CTL_TYPE_BOOL:
case MIXER_CTL_TYPE_INT:
cur->value.integer[v] = mixer_ctl_get_value(ctl, v);
break;
case MIXER_CTL_TYPE_ENUM:
tmp = mixer_ctl_get_value(ctl, v);
name = mixer_ctl_get_enum_string(ctl, tmp);
// null value names were causing seg fault here
if (name)
strcpy(cur->value.enumerated[v], name);
else
printf("Skipping ENUM due to null setting for %s\n", cur->name);
break;
case MIXER_CTL_TYPE_BYTE:
cur->value.byte[v] = mixer_ctl_get_value(ctl, v);
break;
case MIXER_CTL_TYPE_INT64:
cur->value.integer64[v] = mixer_ctl_get_value(ctl, v);
break;
default:
(void)0;
}
}
}
return 0;
}