/*
* 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 .
*/
#define COBJMACROS 1
#define _WIN32_WINNT 0x600
#include
#include
#include
#include
#include
#include
#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 int PKEY_compare(const PROPERTYKEY *l, const PROPERTYKEY *r)
{
if (GUID_compare(&l->fmtid, &r->fmtid)) return 1;
if (l->pid != r->pid) return 1;
return 0;
}
static char *GUID_to_str_buf(char *buf, size_t buf_size, const GUID *guid)
{
snprintf(buf, buf_size,
"{%8.8x-%4.4x-%4.4x-%2.2x%2.2x-%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x}",
guid->Data1, guid->Data2, guid->Data3,
guid->Data4[0], guid->Data4[1],
guid->Data4[2], guid->Data4[3],
guid->Data4[4], guid->Data4[5],
guid->Data4[6], guid->Data4[7]);
return buf;
}
static char *PKEY_to_str_buf(char *buf, size_t buf_size, const PROPERTYKEY *pkey)
{
buf = GUID_to_str_buf(buf, buf_size, &pkey->fmtid);
size_t guid_len = strnlen(buf, buf_size);
snprintf(buf + guid_len, buf_size - guid_len, ",%"PRIu32, (uint32_t)pkey->pid );
return buf;
}
#define PKEY_to_str(pkey) PKEY_to_str_buf((char[42]){0}, 42, (pkey))
static char* ERole_to_str(ERole role)
{
switch(role){
case eConsole: return "console";
case eMultimedia: return "multimedia";
case eCommunications: return "communications";
default: return "";
}
}
static char* EDataFlow_to_str(EDataFlow flow)
{
switch(flow){
case eRender: return "render";
case eCapture: return "capture";
case eAll: return "all";
default: return "";
}
}
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);
}