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device-manager: Add a function to get a list of the highest priority device indexes for each role.

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This commit is contained in:
Colin Guthrie 2009-09-20 17:34:17 +01:00
parent ca68105c8f
commit 678d8e963d
1 changed files with 81 additions and 0 deletions
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81
src/modules/module-device-manager.c
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@ -402,6 +402,87 @@ static char *get_name(const char *key, const char *prefix) {
return t;
}
static role_indexes_t *get_highest_priority_device_indexes(struct userdata *u, const char *prefix) {
role_indexes_t *indexes, highest_priority_available;
pa_datum key;
pa_bool_t done;
pa_assert(u);
pa_assert(prefix);
indexes = pa_xnew(role_indexes_t, 1);
for (uint32_t i = 0; i < NUM_ROLES; ++i) {
*indexes[i] = PA_INVALID_INDEX;
}
pa_zero(highest_priority_available);
done = !pa_database_first(u->database, &key, NULL);
/* Find all existing devices with the same prefix so we find the highest priority device for each role */
while (!done) {
pa_datum next_key;
done = !pa_database_next(u->database, &key, &next_key, NULL);
if (key.size > strlen(prefix) && strncmp(key.data, prefix, strlen(prefix)) == 0) {
char *name;
struct entry *e;
name = pa_xstrndup(key.data, key.size);
if ((e = read_entry(u, name))) {
for (uint32_t i = 0; i < NUM_ROLES; ++i) {
if (highest_priority_available[i] && e->priority[i] < highest_priority_available[i]) {
/* We've found a device with a higher priority than that we've currently got,
so see if it is currently available or not and update our list */
uint32_t idx;
pa_bool_t found = FALSE;
char *device_name = get_name(name, prefix);
if (strcmp(prefix, "sink:") == 0) {
pa_sink *sink;
PA_IDXSET_FOREACH(sink, u->core->sinks, idx) {
if (strcmp(sink->name, device_name) == 0) {
found = TRUE;
idx = sink->index; /* Is this needed? */
break;
}
}
} else {
pa_source *source;
PA_IDXSET_FOREACH(source, u->core->sources, idx) {
if (strcmp(source->name, device_name) == 0) {
found = TRUE;
idx = source->index; /* Is this needed? */
break;
}
}
}
if (found) {
highest_priority_available[i] = e->priority[i];
*indexes[i] = idx;
}
pa_xfree(device_name);
}
}
pa_xfree(e);
}
pa_xfree(name);
}
pa_datum_free(&key);
key = next_key;
}
return indexes;
}
static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_new_data *new_data, struct userdata *u) {
char *name;
struct entry *e;