static ca_context*
connect_canberra_context(char* device, char* driver)
{
ca_context* ca = NULL;
if (ca_context_create(&ca) != 0) {
g_warning("Create canberra context failed");
return NULL;
}
// set backend driver
if (strlen(driver) > 0) {
if (ca_context_set_driver(ca, driver) != 0 ) {
g_warning("Set '%s' as backend driver failed", driver);
ca_context_destroy(ca);
return NULL;
}
}
if (strlen(device) > 0) {
if (ca_context_change_device(ca, device) != 0) {
g_warning("Set '%s' as backend device failed", device);
ca_context_destroy(ca);
return NULL;
}
}
if (ca_context_open(ca) != 0) {
g_warning("Connect the context to sound system failed");
ca_context_destroy(ca);
return NULL;
}
return ca;
}
/**
* gsound_context_set_driver:
* @context: A #GSoundContext
* @driver: libcanberra driver to use
* @error: Return location for error, or %NULL
*
* Returns: %TRUE if the libcanberra driver was set successfully
*/
gboolean
gsound_context_set_driver(GSoundContext *self,
const char *driver,
GError **error)
{
g_return_val_if_fail (GSOUND_IS_CONTEXT(self), FALSE);
return test_return (ca_context_set_driver(self->priv->ca, driver), error);
}
int ca_context_create(ca_context **_c) {
ca_context *c;
int ret;
const char *d;
ca_return_val_if_fail(!ca_detect_fork(), CA_ERROR_FORKED);
ca_return_val_if_fail(_c, CA_ERROR_INVALID);
if (!(c = ca_new0(ca_context, 1)))
return CA_ERROR_OOM;
if (!(c->mutex = ca_mutex_new())) {
ca_context_destroy(c);
return CA_ERROR_OOM;
}
if ((ret = ca_proplist_create(&c->props)) < 0) {
ca_context_destroy(c);
return ret;
}
if ((d = getenv("CANBERRA_DRIVER"))) {
if ((ret = ca_context_set_driver(c, d)) < 0) {
ca_context_destroy(c);
return ret;
}
}
if ((d = getenv("CANBERRA_DEVICE"))) {
if ((ret = ca_context_change_device(c, d)) < 0) {
ca_context_destroy(c);
return ret;
}
}
*_c = c;
return CA_SUCCESS;
}
