HRESULT wasapi_change_init(struct ao *ao)
{
MP_DBG(ao, "Setting up monitoring on playback device\n");
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
struct change_notify *change = &state->change;
/* COM voodoo to emulate c++ class */
change->client.lpVtbl = &sIMMDeviceEnumeratorVtbl_vtbl;
/* so the callbacks can access the ao */
change->ao = ao;
/* get the device string to compare with the pwstrDeviceId argument in callbacks */
HRESULT hr = IMMDevice_GetId(state->pDevice, &change->monitored);
EXIT_ON_ERROR(hr);
/* register the change notification client */
hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(
state->pEnumerator, (IMMNotificationClient *)change);
EXIT_ON_ERROR(hr);
MP_VERBOSE(state, "Monitoring changes in device: %S\n", state->change.monitored);
return hr;
exit_label:
MP_ERR(state, "Error setting up device change monitoring: %s\n",
wasapi_explain_err(hr));
wasapi_change_uninit(ao);
return hr;
}
HRESULT wasapi_change_init(struct ao *ao, bool is_hotplug)
{
struct wasapi_state *state = ao->priv;
struct change_notify *change = &state->change;
HRESULT hr;
/* COM voodoo to emulate c++ class */
change->client.lpVtbl = &sIMMDeviceEnumeratorVtbl_vtbl;
/* register the change notification client */
hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(
state->pEnumerator, (IMMNotificationClient *)change);
EXIT_ON_ERROR(hr);
/* so the callbacks can access the ao */
change->ao = ao;
/* whether or not this is the hotplug instance */
change->is_hotplug = is_hotplug;
if (is_hotplug) {
MP_DBG(ao, "Monitoring for hotplug events\n");
} else {
/* Get the device string to compare with the pwstrDeviceId */
hr = IMMDevice_GetId(state->pDevice, &change->monitored);
EXIT_ON_ERROR(hr);
MP_VERBOSE(ao, "Monitoring changes in device %S\n", change->monitored);
}
return hr;
exit_label:
MP_ERR(state, "Error setting up device change monitoring: %s\n",
mp_HRESULT_to_str(hr));
wasapi_change_uninit(ao);
return hr;
}
HRESULT wasapi_change_init(struct ao *ao, bool is_hotplug)
{
struct wasapi_state *state = ao->priv;
struct change_notify *change = &state->change;
HRESULT hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator,
(void **)&change->pEnumerator);
EXIT_ON_ERROR(hr);
// COM voodoo to emulate c++ class
change->client.lpVtbl = &sIMMNotificationClientVtbl;
// register the change notification client
hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(
change->pEnumerator, (IMMNotificationClient *)change);
EXIT_ON_ERROR(hr);
// so the callbacks can access the ao
change->ao = ao;
// whether or not this is the hotplug instance
change->is_hotplug = is_hotplug;
if (is_hotplug) {
MP_DBG(ao, "Monitoring for hotplug events\n");
} else {
// Get the device string to compare with the pwstrDeviceId
change->monitored = state->deviceID;
MP_VERBOSE(ao, "Monitoring changes in device %S\n", change->monitored);
}
return hr;
exit_label:
MP_ERR(state, "Error setting up device change monitoring: %s\n",
mp_HRESULT_to_str(hr));
wasapi_change_uninit(ao);
return hr;
}
JNIEXPORT jlong JNICALL
Java_org_jitsi_impl_neomedia_jmfext_media_protocol_wasapi_WASAPI_CoCreateInstance
(JNIEnv *env, jclass clazz, jstring clsid, jlong pUnkOuter,
jint dwClsContext, jstring iid)
{
HRESULT hr;
CLSID clsid_;
LPVOID pv;
if (clsid)
{
const jchar *szClsid = (*env)->GetStringChars(env, clsid, NULL);
if (szClsid)
{
hr = CLSIDFromString((LPOLESTR) szClsid, &clsid_);
(*env)->ReleaseStringChars(env, clsid, szClsid);
if (FAILED(hr))
WASAPI_throwNewHResultException(env, hr, __func__, __LINE__);
}
else
hr = E_OUTOFMEMORY;
}
else
hr = S_OK;
if (SUCCEEDED(hr))
{
IID iid_;
hr = WASAPI_iidFromString(env, iid, &iid_);
if (SUCCEEDED(hr))
{
hr
= CoCreateInstance(
&clsid_,
(LPUNKNOWN) (intptr_t) pUnkOuter,
(DWORD) dwClsContext,
&iid_,
&pv);
if (SUCCEEDED(hr))
{
/*
* There is statically allocated IMMNotificationClient instance
* which is to be registered with every IMMDeviceEnumerator
* instance.
*/
if (IsEqualIID(__uuidof(IID_IMMDeviceEnumerator), &iid_))
{
IMMDeviceEnumerator_RegisterEndpointNotificationCallback(
(IMMDeviceEnumerator *) pv,
(IMMNotificationClient *)
&WASAPI_iMMNotificationClient);
}
}
else
{
pv = NULL;
WASAPI_throwNewHResultException(env, hr, __func__, __LINE__);
}
}
else
pv = NULL;
}
else
pv = NULL;
return (jlong) (intptr_t) pv;
}
