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-rwxr-xr-xaudio/out/ao_wasapi_changenotify.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/audio/out/ao_wasapi_changenotify.c b/audio/out/ao_wasapi_changenotify.c
new file mode 100755
index 0000000000..d5db1a9e89
--- /dev/null
+++ b/audio/out/ao_wasapi_changenotify.c
@@ -0,0 +1,171 @@
+/*
+ * This file is part of mpv.
+ *
+ * Original author: Jonathan Yong <10walls@gmail.com>
+ *
+ * mpv is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mpv. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define COBJMACROS 1
+#define _WIN32_WINNT 0x600
+
+#include <initguid.h>
+#include <audioclient.h>
+#include <endpointvolume.h>
+#include <mmdeviceapi.h>
+#include <wchar.h>
+#include <stdlib.h>
+
+#include "ao_wasapi.h"
+#include "ao_wasapi_utils.h"
+
+static int GUID_compare(const GUID *l, const GUID *r)
+{
+ unsigned int i;
+ if (l->Data1 != r->Data1) return 1;
+ if (l->Data2 != r->Data2) return 1;
+ if (l->Data3 != r->Data3) return 1;
+ for (i = 0; i < 8; i++) {
+ if (l->Data4[i] != r->Data4[i]) return 1;
+ }
+ return 0;
+}
+
+static HRESULT STDMETHODCALLTYPE sIMMNotificationClient_QueryInterface(
+ IMMNotificationClient* This, REFIID riid, void **ppvObject)
+{
+ /* Compatible with IMMNotificationClient and IUnknown */
+ if (!GUID_compare(&IID_IMMNotificationClient, riid) ||
+ !GUID_compare(&IID_IUnknown, riid)) {
+ *ppvObject = (void *)This;
+ return S_OK;
+ } else {
+ *ppvObject = NULL;
+ return E_NOINTERFACE;
+ }
+}
+
+/* these are required, but not actually used */
+static ULONG STDMETHODCALLTYPE sIMMNotificationClient_AddRef(
+ IMMNotificationClient *This)
+{
+ return 1;
+}
+
+/* MSDN says it should free itself, but we're static */
+static ULONG STDMETHODCALLTYPE sIMMNotificationClient_Release(
+ IMMNotificationClient *This)
+{
+ return 1;
+}
+
+static HRESULT STDMETHODCALLTYPE sIMMNotificationClient_OnDeviceStateChanged(
+ IMMNotificationClient *This,
+ LPCWSTR pwstrDeviceId,
+ DWORD dwNewState)
+{
+ change_notify *change = (change_notify *)This;
+
+ if (!wcscmp(change->monitored, pwstrDeviceId)){
+ switch (dwNewState) {
+ case DEVICE_STATE_DISABLED:
+ case DEVICE_STATE_NOTPRESENT:
+ case DEVICE_STATE_UNPLUGGED:
+
+ case DEVICE_STATE_ACTIVE:
+ default:
+ return S_OK;
+ }
+ }
+ return S_OK;
+}
+
+static HRESULT STDMETHODCALLTYPE sIMMNotificationClient_OnDeviceAdded(
+ IMMNotificationClient *This,
+ LPCWSTR pwstrDeviceId)
+{
+ change_notify *change = (change_notify *)This;
+
+ return S_OK;
+}
+
+/* maybe MPV can go over to the prefered device once it is plugged in? */
+static HRESULT STDMETHODCALLTYPE sIMMNotificationClient_OnDeviceRemoved(
+ IMMNotificationClient *This,
+ LPCWSTR pwstrDeviceId)
+{
+ change_notify *change = (change_notify *)This;
+
+ if (!wcscmp(change->monitored, pwstrDeviceId)) {
+
+ }
+ return S_OK;
+}
+
+static HRESULT STDMETHODCALLTYPE sIMMNotificationClient_OnDefaultDeviceChanged(
+ IMMNotificationClient *This,
+ EDataFlow flow,
+ ERole role,
+ LPCWSTR pwstrDeviceId)
+{
+ change_notify *change = (change_notify *)This;
+
+ if (!wcscmp(change->monitored, pwstrDeviceId)) {
+
+ }
+ return S_OK;
+}
+
+static HRESULT STDMETHODCALLTYPE sIMMNotificationClient_OnPropertyValueChanged(
+ IMMNotificationClient *This,
+ LPCWSTR pwstrDeviceId,
+ const PROPERTYKEY key)
+{
+ change_notify *change = (change_notify *)This;
+
+ if (!wcscmp(change->monitored, pwstrDeviceId)) {
+
+ }
+ return S_OK;
+}
+
+static CONST_VTBL IMMNotificationClientVtbl sIMMDeviceEnumeratorVtbl_vtbl = {
+ .QueryInterface = sIMMNotificationClient_QueryInterface,
+ .AddRef = sIMMNotificationClient_AddRef,
+ .Release = sIMMNotificationClient_Release,
+ .OnDeviceStateChanged = sIMMNotificationClient_OnDeviceStateChanged,
+ .OnDeviceAdded = sIMMNotificationClient_OnDeviceAdded,
+ .OnDeviceRemoved = sIMMNotificationClient_OnDeviceRemoved,
+ .OnDefaultDeviceChanged = sIMMNotificationClient_OnDefaultDeviceChanged,
+ .OnPropertyValueChanged = sIMMNotificationClient_OnPropertyValueChanged,
+};
+
+HRESULT wasapi_change_init(struct change_notify *change, IMMDevice *monitor)
+{
+ HRESULT ret;
+
+ if ( ((ret = IMMDevice_GetId(monitor, &change->monitored)) != S_OK) ) {
+ wasapi_change_free(change);
+ return ret;
+ }
+
+ ret = S_OK;
+ change->client.lpVtbl = &sIMMDeviceEnumeratorVtbl_vtbl;
+ return ret;
+}
+
+void wasapi_change_free(struct change_notify *change)
+{
+ if (change->monitored) CoTaskMemFree(change->monitored);
+}