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mmdevapi: Send notifications to clients when the user-selected default device changes.

This commit is contained in:
Andrew Eikum 2012-12-14 11:41:56 -06:00 committed by Alexandre Julliard
parent 8d775ec09b
commit d4e9b26cbb
1 changed files with 153 additions and 6 deletions
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159
dlls/mmdevapi/devenum.c
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@ -59,6 +59,11 @@ static const WCHAR reg_devicestate[] =
{ 'D','e','v','i','c','e','S','t','a','t','e',0 };
static const WCHAR reg_properties[] =
{ 'P','r','o','p','e','r','t','i','e','s',0 };
static const WCHAR slashW[] = {'\\',0};
static const WCHAR reg_out_nameW[] = {'D','e','f','a','u','l','t','O','u','t','p','u','t',0};
static const WCHAR reg_vout_nameW[] = {'D','e','f','a','u','l','t','V','o','i','c','e','O','u','t','p','u','t',0};
static const WCHAR reg_in_nameW[] = {'D','e','f','a','u','l','t','I','n','p','u','t',0};
static const WCHAR reg_vin_nameW[] = {'D','e','f','a','u','l','t','V','o','i','c','e','I','n','p','u','t',0};
static HKEY key_render;
static HKEY key_capture;
@ -916,12 +921,6 @@ static HRESULT WINAPI MMDevEnum_GetDefaultAudioEndpoint(IMMDeviceEnumerator *ifa
HKEY key;
HRESULT hr;
static const WCHAR slashW[] = {'\\',0};
static const WCHAR reg_out_nameW[] = {'D','e','f','a','u','l','t','O','u','t','p','u','t',0};
static const WCHAR reg_vout_nameW[] = {'D','e','f','a','u','l','t','V','o','i','c','e','O','u','t','p','u','t',0};
static const WCHAR reg_in_nameW[] = {'D','e','f','a','u','l','t','I','n','p','u','t',0};
static const WCHAR reg_vin_nameW[] = {'D','e','f','a','u','l','t','V','o','i','c','e','I','n','p','u','t',0};
TRACE("(%p)->(%u,%u,%p)\n", This, flow, role, device);
if (!device)
@ -1042,6 +1041,7 @@ struct NotificationClientWrapper {
};
static struct list g_notif_clients = LIST_INIT(g_notif_clients);
static HANDLE g_notif_thread;
static CRITICAL_SECTION g_notif_lock;
static CRITICAL_SECTION_DEBUG g_notif_lock_debug =
@ -1052,6 +1052,147 @@ static CRITICAL_SECTION_DEBUG g_notif_lock_debug =
};
static CRITICAL_SECTION g_notif_lock = { &g_notif_lock_debug, -1, 0, 0, 0, 0 };
static void notify_clients(EDataFlow flow, ERole role, const WCHAR *id)
{
struct NotificationClientWrapper *wrapper;
LIST_FOR_EACH_ENTRY(wrapper, &g_notif_clients,
struct NotificationClientWrapper, entry)
IMMNotificationClient_OnDefaultDeviceChanged(wrapper->client, flow,
role, id);
/* Windows 7 treats changes to eConsole as changes to eMultimedia */
if(role == eConsole)
notify_clients(flow, eMultimedia, id);
}
static int notify_if_changed(EDataFlow flow, ERole role, HKEY key,
const WCHAR *val_name, WCHAR *old_val, IMMDevice *def_dev)
{
WCHAR new_val[64], *id;
DWORD size;
HRESULT hr;
size = sizeof(new_val);
if(RegQueryValueExW(key, val_name, 0, NULL,
(BYTE*)new_val, &size) != ERROR_SUCCESS){
if(old_val[0] != 0){
/* set by user -> system default */
if(def_dev){
hr = IMMDevice_GetId(def_dev, &id);
if(FAILED(hr)){
ERR("GetId failed: %08x\n", hr);
return 0;
}
}else
id = NULL;
notify_clients(flow, role, id);
old_val[0] = 0;
CoTaskMemFree(id);
return 1;
}
/* system default -> system default, noop */
return 0;
}
if(!lstrcmpW(old_val, new_val)){
/* set by user -> same value */
return 0;
}
if(new_val[0] != 0){
/* set by user -> different value */
notify_clients(flow, role, new_val);
memcpy(old_val, new_val, sizeof(new_val));
return 1;
}
/* set by user -> system default */
if(def_dev){
hr = IMMDevice_GetId(def_dev, &id);
if(FAILED(hr)){
ERR("GetId failed: %08x\n", hr);
return 0;
}
}else
id = NULL;
notify_clients(flow, role, id);
old_val[0] = 0;
CoTaskMemFree(id);
return 1;
}
static DWORD WINAPI notif_thread_proc(void *user)
{
HKEY key;
WCHAR reg_key[256];
WCHAR out_name[64], vout_name[64], in_name[64], vin_name[64];
DWORD size;
lstrcpyW(reg_key, drv_keyW);
lstrcatW(reg_key, slashW);
lstrcatW(reg_key, drvs.module_name);
if(RegCreateKeyExW(HKEY_CURRENT_USER, reg_key, 0, NULL, 0,
MAXIMUM_ALLOWED, NULL, &key, NULL) != ERROR_SUCCESS){
ERR("RegCreateKeyEx failed: %u\n", GetLastError());
return 1;
}
size = sizeof(out_name);
if(RegQueryValueExW(key, reg_out_nameW, 0, NULL,
(BYTE*)out_name, &size) != ERROR_SUCCESS)
out_name[0] = 0;
size = sizeof(vout_name);
if(RegQueryValueExW(key, reg_vout_nameW, 0, NULL,
(BYTE*)vout_name, &size) != ERROR_SUCCESS)
vout_name[0] = 0;
size = sizeof(in_name);
if(RegQueryValueExW(key, reg_in_nameW, 0, NULL,
(BYTE*)in_name, &size) != ERROR_SUCCESS)
in_name[0] = 0;
size = sizeof(vin_name);
if(RegQueryValueExW(key, reg_vin_nameW, 0, NULL,
(BYTE*)vin_name, &size) != ERROR_SUCCESS)
vin_name[0] = 0;
while(1){
if(RegNotifyChangeKeyValue(key, FALSE, REG_NOTIFY_CHANGE_LAST_SET,
NULL, FALSE) != ERROR_SUCCESS){
ERR("RegNotifyChangeKeyValue failed: %u\n", GetLastError());
RegCloseKey(key);
g_notif_thread = NULL;
return 1;
}
EnterCriticalSection(&g_notif_lock);
notify_if_changed(eRender, eConsole, key, reg_out_nameW,
out_name, &MMDevice_def_play->IMMDevice_iface);
notify_if_changed(eRender, eCommunications, key, reg_vout_nameW,
vout_name, &MMDevice_def_play->IMMDevice_iface);
notify_if_changed(eCapture, eConsole, key, reg_in_nameW,
in_name, &MMDevice_def_rec->IMMDevice_iface);
notify_if_changed(eCapture, eCommunications, key, reg_vin_nameW,
vin_name, &MMDevice_def_rec->IMMDevice_iface);
LeaveCriticalSection(&g_notif_lock);
}
RegCloseKey(key);
g_notif_thread = NULL;
return 0;
}
static HRESULT WINAPI MMDevEnum_RegisterEndpointNotificationCallback(IMMDeviceEnumerator *iface, IMMNotificationClient *client)
{
MMDevEnumImpl *This = impl_from_IMMDeviceEnumerator(iface);
@ -1072,6 +1213,12 @@ static HRESULT WINAPI MMDevEnum_RegisterEndpointNotificationCallback(IMMDeviceEn
list_add_tail(&g_notif_clients, &wrapper->entry);
if(!g_notif_thread){
g_notif_thread = CreateThread(NULL, 0, notif_thread_proc, NULL, 0, NULL);
if(!g_notif_thread)
ERR("CreateThread failed: %u\n", GetLastError());
}
LeaveCriticalSection(&g_notif_lock);
return S_OK;