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