[PATCH 2/6] mmdevapi: Stub implement IAudioClient2

[Andrew Eikum]

Signed-off-by: Andrew Eikum 
---
 dlls/mmdevapi/devenum.c           |   3 +-
 dlls/mmdevapi/tests/render.c      |  11 +++
 dlls/winealsa.drv/mmdevdrv.c      | 144 ++++++++++++++++++-----------
 dlls/wineandroid.drv/mmdevdrv.c   | 147 ++++++++++++++++++------------
 dlls/winecoreaudio.drv/mmdevdrv.c | 144 ++++++++++++++++++-----------
 dlls/wineoss.drv/mmdevdrv.c       | 145 ++++++++++++++++++-----------
 dlls/winepulse.drv/mmdevdrv.c     | 142 ++++++++++++++++++-----------
 7 files changed, 463 insertions(+), 273 deletions(-)

diff --git a/dlls/mmdevapi/devenum.c b/dlls/mmdevapi/devenum.c
index 82e1bb96c2a..5b7d6e76a78 100644
--- a/dlls/mmdevapi/devenum.c
+++ b/dlls/mmdevapi/devenum.c
@@ -591,7 +591,8 @@ static HRESULT WINAPI MMDevice_Activate(IMMDevice *iface, REFIID riid, DWORD cls
     if (!ppv)
         return E_POINTER;

-    if (IsEqualIID(riid, &IID_IAudioClient)){
+    if (IsEqualIID(riid, &IID_IAudioClient) ||
+            IsEqualIID(riid, &IID_IAudioClient2)){
         hr = drvs.pGetAudioEndpoint(&This->devguid, iface, (IAudioClient**)ppv);
     }else if (IsEqualIID(riid, &IID_IAudioEndpointVolume) ||
             IsEqualIID(riid, &IID_IAudioEndpointVolumeEx))
diff --git a/dlls/mmdevapi/tests/render.c b/dlls/mmdevapi/tests/render.c
index 50a43229a05..8d52f483333 100644
--- a/dlls/mmdevapi/tests/render.c
+++ b/dlls/mmdevapi/tests/render.c
@@ -133,6 +133,7 @@ static void test_uninitialized(IAudioClient *ac)
 static void test_audioclient(void)
 {
     IAudioClient *ac;
+    IAudioClient2 *ac2;
     IUnknown *unk;
     HRESULT hr;
     ULONG ref;
@@ -140,6 +141,11 @@ static void test_audioclient(void)
     REFERENCE_TIME t1, t2;
     HANDLE handle;

+    hr = IMMDevice_Activate(dev, &IID_IAudioClient2, CLSCTX_INPROC_SERVER,
+            NULL, (void**)&ac2);
+    ok(hr == S_OK, "IAudioClient2 Activation failed with %08x\n", hr);
+    IAudioClient2_Release(ac2);
+
     hr = IMMDevice_Activate(dev, &IID_IAudioClient, CLSCTX_INPROC_SERVER,
             NULL, (void**)&ac);
     ok(hr == S_OK, "Activation failed with %08x\n", hr);
@@ -244,6 +250,11 @@ static void test_audioclient(void)
            "IsFormatSupported(0xffffffff) call returns %08x\n", hr);
     }

+    hr = IAudioClient_QueryInterface(ac, &IID_IAudioClient2, (void**)&ac2);
+    ok(hr == S_OK, "Failed to query IAudioClient2 interface: %08x\n", hr);
+
+    IAudioClient2_Release(ac2);
+
     test_uninitialized(ac);

hr = IAudioClient_Initialize(ac, 3, 0, 5000000, 0, pwfx, NULL);
diff --git a/dlls/winealsa.drv/mmdevdrv.c b/dlls/winealsa.drv/mmdevdrv.c
index 714d6ab9b16..2c3165385e6 100644
--- a/dlls/winealsa.drv/mmdevdrv.c
+++ b/dlls/winealsa.drv/mmdevdrv.c
@@ -88,7 +88,7 @@ typedef struct _AudioSessionWrapper {
 } AudioSessionWrapper;

struct ACImpl {
-    IAudioClient IAudioClient_iface;
+    IAudioClient2 IAudioClient2_iface;
     IAudioRenderClient IAudioRenderClient_iface;
     IAudioCaptureClient IAudioCaptureClient_iface;
     IAudioClock IAudioClock_iface;
@@ -172,7 +172,7 @@ static const WCHAR drv_key_devicesW[] = {'S','o','f','t','w','a','r','e','\',
     'w','i','n','e','a','l','s','a','.','d','r','v','\','d','e','v','i','c','e','s',0};
 static const WCHAR guidW[] = {'g','u','i','d',0};

-static const IAudioClientVtbl AudioClient_Vtbl;
+static const IAudioClient2Vtbl AudioClient2_Vtbl;
 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl;
 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl;
 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl;
@@ -185,9 +185,9 @@ static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl;

static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client);

-static inline ACImpl *impl_from_IAudioClient(IAudioClient *iface)
+static inline ACImpl *impl_from_IAudioClient2(IAudioClient2 *iface)
 {
-    return CONTAINING_RECORD(iface, ACImpl, IAudioClient_iface);
+    return CONTAINING_RECORD(iface, ACImpl, IAudioClient2_iface);
 }

static inline ACImpl *impl_from_IAudioRenderClient(IAudioRenderClient *iface)
@@ -788,7 +788,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient
     if(!This)
         return E_OUTOFMEMORY;

-    This->IAudioClient_iface.lpVtbl = &AudioClient_Vtbl;
+    This->IAudioClient2_iface.lpVtbl = &AudioClient2_Vtbl;
     This->IAudioRenderClient_iface.lpVtbl = &AudioRenderClient_Vtbl;
     This->IAudioCaptureClient_iface.lpVtbl = &AudioCaptureClient_Vtbl;
     This->IAudioClock_iface.lpVtbl = &AudioClock_Vtbl;
@@ -804,7 +804,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient
         return E_UNEXPECTED;
     }

-    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient_iface, &This->pUnkFTMarshal);
+    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient2_iface, &This->pUnkFTMarshal);
     if (FAILED(hr)) {
         HeapFree(GetProcessHeap(), 0, This);
         return hr;
@@ -851,22 +851,24 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient
     This->parent = dev;
     IMMDevice_AddRef(This->parent);

-    *out = &This->IAudioClient_iface;
-    IAudioClient_AddRef(&This->IAudioClient_iface);
+    *out = (IAudioClient *)&This->IAudioClient2_iface;
+    IAudioClient2_AddRef(&This->IAudioClient2_iface);

return S_OK;
 }

-static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient2 *iface,
         REFIID riid, void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);

if(!ppv)
         return E_POINTER;
     *ppv = NULL;
-    if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClient))
+    if(IsEqualIID(riid, &IID_IUnknown) ||
+            IsEqualIID(riid, &IID_IAudioClient) ||
+            IsEqualIID(riid, &IID_IAudioClient2))
         *ppv = iface;
     else if(IsEqualIID(riid, &IID_IMarshal))
         return IUnknown_QueryInterface(This->pUnkFTMarshal, riid, ppv);
@@ -879,18 +881,18 @@ static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
     return E_NOINTERFACE;
 }

-static ULONG WINAPI AudioClient_AddRef(IAudioClient *iface)
+static ULONG WINAPI AudioClient_AddRef(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;
     ref = InterlockedIncrement(&This->ref);
     TRACE("(%p) Refcount now %u\n", This, ref);
     return ref;
 }

-static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
+static ULONG WINAPI AudioClient_Release(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;

ref = InterlockedDecrement(&This->ref);
@@ -907,7 +909,7 @@ static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
             CloseHandle(event);
         }

-        IAudioClient_Stop(iface);
+        IAudioClient2_Stop(iface);
         IMMDevice_Release(This->parent);
         IUnknown_Release(This->pUnkFTMarshal);
         This->lock.DebugInfo->Spare[0] = 0;
@@ -1236,12 +1238,12 @@ static void silence_buffer(ACImpl *This, BYTE *buffer, UINT32 frames)
         memset(buffer, 0, frames * This->fmt->nBlockAlign);
 }

-static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_Initialize(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration,
         REFERENCE_TIME period, const WAVEFORMATEX *fmt,
         const GUID *sessionguid)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     snd_pcm_sw_params_t *sw_params = NULL;
     snd_pcm_format_t format;
     unsigned int rate, alsa_period_us;
@@ -1528,10 +1530,10 @@ exit:
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient2 *iface,
         UINT32 *out)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, out);

@@ -1552,10 +1554,10 @@ static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient2 *iface,
         REFERENCE_TIME *latency)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, latency);

@@ -1585,10 +1587,10 @@ static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient2 *iface,
         UINT32 *out)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, out);

@@ -1612,11 +1614,11 @@ static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *fmt,
         WAVEFORMATEX **out)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     snd_pcm_format_mask_t *formats = NULL;
     snd_pcm_format_t format;
     HRESULT hr = S_OK;
@@ -1763,10 +1765,10 @@ exit:
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient2 *iface,
         WAVEFORMATEX **pwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     WAVEFORMATEXTENSIBLE *fmt;
     snd_pcm_format_mask_t *formats;
     unsigned int max_rate, max_channels;
@@ -1894,10 +1896,10 @@ exit:
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient2 *iface,
         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);

@@ -2392,9 +2394,9 @@ static int alsa_rewind_best_effort(ACImpl *This)
     return len;
 }

-static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Start(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -2460,9 +2462,9 @@ static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Stop(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -2488,9 +2490,9 @@ static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Reset(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -2535,10 +2537,10 @@ static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient2 *iface,
         HANDLE event)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, event);

@@ -2570,10 +2572,10 @@ static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
+static HRESULT WINAPI AudioClient_GetService(IAudioClient2 *iface, REFIID riid,
         void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);

@@ -2654,7 +2656,38 @@ static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
     return E_NOINTERFACE;
 }

-static const IAudioClientVtbl AudioClient_Vtbl =
+static HRESULT WINAPI AudioClient_IsOffloadCapable(IAudioClient2 *iface,
+        AUDIO_STREAM_CATEGORY category, BOOL *offload_capable)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(0x%x, %p)\n", This, category, offload_capable);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_SetClientProperties(IAudioClient2 *iface,
+        const AudioClientProperties *prop)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p)\n", This, prop);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_GetBufferSizeLimits(IAudioClient2 *iface,
+        const WAVEFORMATEX *format, BOOL event_driven, REFERENCE_TIME *min_duration,
+        REFERENCE_TIME *max_duration)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p, %u, %p, %p)\n", This, format, event_driven, min_duration, max_duration);
+
+    return E_NOTIMPL;
+}
+
+static const IAudioClient2Vtbl AudioClient2_Vtbl =
 {
     AudioClient_QueryInterface,
     AudioClient_AddRef,
@@ -2670,7 +2703,10 @@ static const IAudioClientVtbl AudioClient_Vtbl =
     AudioClient_Stop,
     AudioClient_Reset,
     AudioClient_SetEventHandle,
-    AudioClient_GetService
+    AudioClient_GetService,
+    AudioClient_IsOffloadCapable,
+    AudioClient_SetClientProperties,
+    AudioClient_GetBufferSizeLimits,
 };

static HRESULT WINAPI AudioRenderClient_QueryInterface(
@@ -2701,13 +2737,13 @@ static HRESULT WINAPI AudioRenderClient_QueryInterface(
 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_AddRef(&This->IAudioClient_iface);
+    return AudioClient_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_Release(&This->IAudioClient_iface);
+    return AudioClient_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
@@ -2867,13 +2903,13 @@ static HRESULT WINAPI AudioCaptureClient_QueryInterface(
 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
@@ -3042,13 +3078,13 @@ static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
@@ -3160,13 +3196,13 @@ static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
@@ -3205,7 +3241,7 @@ static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
     ret->client = client;
     if(client){
         ret->session = client->session;
-        AudioClient_AddRef(&client->IAudioClient_iface);
+        AudioClient_AddRef(&client->IAudioClient2_iface);
     }

return ret;
@@ -3253,7 +3289,7 @@ static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
             EnterCriticalSection(&This->client->lock);
             This->client->session_wrapper = NULL;
             LeaveCriticalSection(&This->client->lock);
-            AudioClient_Release(&This->client->IAudioClient_iface);
+            AudioClient_Release(&This->client->IAudioClient2_iface);
         }
         HeapFree(GetProcessHeap(), 0, This);
     }
@@ -3595,13 +3631,13 @@ static HRESULT WINAPI AudioStreamVolume_QueryInterface(
 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
diff --git a/dlls/wineandroid.drv/mmdevdrv.c b/dlls/wineandroid.drv/mmdevdrv.c
index eac55f9e290..4e9ada3f55b 100644
--- a/dlls/wineandroid.drv/mmdevdrv.c
+++ b/dlls/wineandroid.drv/mmdevdrv.c
@@ -107,7 +107,7 @@ typedef struct _AudioSessionWrapper {
 } AudioSessionWrapper;

struct ACImpl {
-    IAudioClient IAudioClient_iface;
+    IAudioClient2 IAudioClient2_iface;
     IAudioRenderClient IAudioRenderClient_iface;
     IAudioCaptureClient IAudioCaptureClient_iface;
     IAudioClock IAudioClock_iface;
@@ -174,7 +174,7 @@ static struct list g_sessions = LIST_INIT(g_sessions);

static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client);

-static const IAudioClientVtbl AudioClient_Vtbl;
+static const IAudioClient2Vtbl AudioClient2_Vtbl;
 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl;
 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl;
 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl;
@@ -185,9 +185,9 @@ static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl;
 static const IChannelAudioVolumeVtbl ChannelAudioVolume_Vtbl;
 static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl;

-static inline ACImpl *impl_from_IAudioClient(IAudioClient *iface)
+static inline ACImpl *impl_from_IAudioClient2(IAudioClient2 *iface)
 {
-    return CONTAINING_RECORD(iface, ACImpl, IAudioClient_iface);
+    return CONTAINING_RECORD(iface, ACImpl, IAudioClient2_iface);
 }

static inline ACImpl *impl_from_IAudioRenderClient(IAudioRenderClient *iface)
@@ -377,7 +377,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev,
     if(!This)
         return E_OUTOFMEMORY;

-    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient_iface, &This->pUnkFTMarshal);
+    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient2_iface, &This->pUnkFTMarshal);
     if (FAILED(hr)) {
          HeapFree(GetProcessHeap(), 0, This);
          return hr;
@@ -385,7 +385,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev,

This->dataflow = flow;

-    This->IAudioClient_iface.lpVtbl = &AudioClient_Vtbl;
+    This->IAudioClient2_iface.lpVtbl = &AudioClient2_Vtbl;
     This->IAudioRenderClient_iface.lpVtbl = &AudioRenderClient_Vtbl;
     This->IAudioCaptureClient_iface.lpVtbl = &AudioCaptureClient_Vtbl;
     This->IAudioClock_iface.lpVtbl = &AudioClock_Vtbl;
@@ -398,23 +398,24 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev,
     This->parent = dev;
     IMMDevice_AddRef(This->parent);

-    IAudioClient_AddRef(&This->IAudioClient_iface);
-
-    *out = &This->IAudioClient_iface;
+    *out = (IAudioClient *)&This->IAudioClient2_iface;
+    IAudioClient2_AddRef(&This->IAudioClient2_iface);

return S_OK;
 }

-static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient2 *iface,
         REFIID riid, void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);

if(!ppv)
         return E_POINTER;
     *ppv = NULL;
-    if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClient))
+    if(IsEqualIID(riid, &IID_IUnknown) ||
+            IsEqualIID(riid, &IID_IAudioClient) ||
+            IsEqualIID(riid, &IID_IAudioClient2))
         *ppv = iface;
     else if(IsEqualIID(riid, &IID_IMarshal))
         return IUnknown_QueryInterface(This->pUnkFTMarshal, riid, ppv);
@@ -426,18 +427,18 @@ static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
     return E_NOINTERFACE;
 }

-static ULONG WINAPI AudioClient_AddRef(IAudioClient *iface)
+static ULONG WINAPI AudioClient_AddRef(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;
     ref = InterlockedIncrement(&This->ref);
     TRACE("(%p) Refcount now %u\n", This, ref);
     return ref;
 }

-static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
+static ULONG WINAPI AudioClient_Release(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;

ref = InterlockedDecrement(&This->ref);
@@ -454,7 +455,7 @@ static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
             CloseHandle(event);
         }

-        IAudioClient_Stop(iface);
+        IAudioClient2_Stop(iface);

IMMDevice_Release(This->parent);
         IUnknown_Release(This->pUnkFTMarshal);
@@ -784,12 +785,12 @@ static HRESULT try_open_capture_device(SLAndroidDataFormat_PCM_EX *pcm, unsigned
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_Initialize(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration,
         REFERENCE_TIME period, const WAVEFORMATEX *fmt,
         const GUID *sessionguid)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     int i, num_buffers;
     HRESULT hr;
     SLresult sr;
@@ -1019,10 +1020,10 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient2 *iface,
         UINT32 *frames)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, frames);

@@ -1045,10 +1046,10 @@ static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient2 *iface,
         REFERENCE_TIME *latency)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, latency);

@@ -1071,10 +1072,10 @@ static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient2 *iface,
         UINT32 *numpad)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, numpad);

@@ -1097,11 +1098,11 @@ static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *pwfx,
         WAVEFORMATEX **outpwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     SLAndroidDataFormat_PCM_EX pcm;
     HRESULT hr;

@@ -1133,7 +1134,7 @@ static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,

if(FAILED(hr)){
         if(outpwfx){
-            hr = IAudioClient_GetMixFormat(iface, outpwfx);
+            hr = IAudioClient2_GetMixFormat(iface, outpwfx);
             if(FAILED(hr))
                 return hr;
             return S_FALSE;
@@ -1147,10 +1148,10 @@ static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient2 *iface,
         WAVEFORMATEX **pwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     WAVEFORMATEXTENSIBLE *fmt;

TRACE("(%p)->(%p)\n", This, pwfx);
@@ -1185,10 +1186,10 @@ static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient2 *iface,
         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);

@@ -1342,9 +1343,9 @@ static void CALLBACK sl_period_callback(void *user, BOOLEAN timer)
         SetEvent(This->event);
 }

-static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Start(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     SLresult sr;

TRACE("(%p)\n", This);
@@ -1396,9 +1397,9 @@ static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Stop(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     SLresult sr;

TRACE("(%p)\n", This);
@@ -1438,9 +1439,9 @@ static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Reset(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     SLresult sr;

TRACE("(%p)\n", This);
@@ -1495,10 +1496,10 @@ static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient2 *iface,
         HANDLE event)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, event);

@@ -1530,10 +1531,10 @@ static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
+static HRESULT WINAPI AudioClient_GetService(IAudioClient2 *iface, REFIID riid,
         void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);

@@ -1614,7 +1615,38 @@ static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
     return E_NOINTERFACE;
 }

-static const IAudioClientVtbl AudioClient_Vtbl =
+static HRESULT WINAPI AudioClient_IsOffloadCapable(IAudioClient2 *iface,
+        AUDIO_STREAM_CATEGORY category, BOOL *offload_capable)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(0x%x, %p)\n", This, category, offload_capable);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_SetClientProperties(IAudioClient2 *iface,
+        const AudioClientProperties *prop)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p)\n", This, prop);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_GetBufferSizeLimits(IAudioClient2 *iface,
+        const WAVEFORMATEX *format, BOOL event_driven, REFERENCE_TIME *min_duration,
+        REFERENCE_TIME *max_duration)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p, %u, %p, %p)\n", This, format, event_driven, min_duration, max_duration);
+
+    return E_NOTIMPL;
+}
+
+static const IAudioClient2Vtbl AudioClient2_Vtbl =
 {
     AudioClient_QueryInterface,
     AudioClient_AddRef,
@@ -1630,7 +1662,10 @@ static const IAudioClientVtbl AudioClient_Vtbl =
     AudioClient_Stop,
     AudioClient_Reset,
     AudioClient_SetEventHandle,
-    AudioClient_GetService
+    AudioClient_GetService,
+    AudioClient_IsOffloadCapable,
+    AudioClient_SetClientProperties,
+    AudioClient_GetBufferSizeLimits,
 };

static HRESULT WINAPI AudioRenderClient_QueryInterface(
@@ -1660,13 +1695,13 @@ static HRESULT WINAPI AudioRenderClient_QueryInterface(
 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_AddRef(&This->IAudioClient_iface);
+    return AudioClient_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_Release(&This->IAudioClient_iface);
+    return AudioClient_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
@@ -1827,13 +1862,13 @@ static HRESULT WINAPI AudioCaptureClient_QueryInterface(
 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
@@ -2005,13 +2040,13 @@ static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
@@ -2101,13 +2136,13 @@ static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
@@ -2146,7 +2181,7 @@ static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
     ret->client = client;
     if(client){
         ret->session = client->session;
-        AudioClient_AddRef(&client->IAudioClient_iface);
+        AudioClient_AddRef(&client->IAudioClient2_iface);
     }

return ret;
@@ -2194,7 +2229,7 @@ static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
             EnterCriticalSection(&This->client->lock);
             This->client->session_wrapper = NULL;
             LeaveCriticalSection(&This->client->lock);
-            AudioClient_Release(&This->client->IAudioClient_iface);
+            AudioClient_Release(&This->client->IAudioClient2_iface);
         }
         HeapFree(GetProcessHeap(), 0, This);
     }
@@ -2537,13 +2572,13 @@ static HRESULT WINAPI AudioStreamVolume_QueryInterface(
 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
diff --git a/dlls/winecoreaudio.drv/mmdevdrv.c b/dlls/winecoreaudio.drv/mmdevdrv.c
index 860d33fa3ba..dd2ad916f8d 100644
--- a/dlls/winecoreaudio.drv/mmdevdrv.c
+++ b/dlls/winecoreaudio.drv/mmdevdrv.c
@@ -130,7 +130,7 @@ typedef struct _AudioSessionWrapper {
 } AudioSessionWrapper;

struct ACImpl {
-    IAudioClient IAudioClient_iface;
+    IAudioClient2 IAudioClient2_iface;
     IAudioRenderClient IAudioRenderClient_iface;
     IAudioCaptureClient IAudioCaptureClient_iface;
     IAudioClock IAudioClock_iface;
@@ -173,7 +173,7 @@ struct ACImpl {
     OSSpinLock lock;
 };

-static const IAudioClientVtbl AudioClient_Vtbl;
+static const IAudioClient2Vtbl AudioClient2_Vtbl;
 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl;
 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl;
 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl;
@@ -212,9 +212,9 @@ static struct list g_sessions = LIST_INIT(g_sessions);
 static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client);
 static HRESULT ca_setvol(ACImpl *This, UINT32 index);

-static inline ACImpl *impl_from_IAudioClient(IAudioClient *iface)
+static inline ACImpl *impl_from_IAudioClient2(IAudioClient2 *iface)
 {
-    return CONTAINING_RECORD(iface, ACImpl, IAudioClient_iface);
+    return CONTAINING_RECORD(iface, ACImpl, IAudioClient2_iface);
 }

static inline ACImpl *impl_from_IAudioRenderClient(IAudioRenderClient *iface)
@@ -674,7 +674,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient
     if(!This)
         return E_OUTOFMEMORY;

-    This->IAudioClient_iface.lpVtbl = &AudioClient_Vtbl;
+    This->IAudioClient2_iface.lpVtbl = &AudioClient2_Vtbl;
     This->IAudioRenderClient_iface.lpVtbl = &AudioRenderClient_Vtbl;
     This->IAudioCaptureClient_iface.lpVtbl = &AudioCaptureClient_Vtbl;
     This->IAudioClock_iface.lpVtbl = &AudioClock_Vtbl;
@@ -694,7 +694,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient

This->lock = 0;

-    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient_iface, &This->pUnkFTMarshal);
+    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient2_iface, &This->pUnkFTMarshal);
     if (FAILED(hr)) {
         HeapFree(GetProcessHeap(), 0, This);
         return hr;
@@ -710,22 +710,24 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient
         return AUDCLNT_E_DEVICE_INVALIDATED;
     }

-    *out = &This->IAudioClient_iface;
-    IAudioClient_AddRef(&This->IAudioClient_iface);
+    *out = (IAudioClient *)&This->IAudioClient2_iface;
+    IAudioClient2_AddRef(&This->IAudioClient2_iface);

return S_OK;
 }

-static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient2 *iface,
         REFIID riid, void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);

if(!ppv)
         return E_POINTER;
     *ppv = NULL;
-    if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClient))
+    if(IsEqualIID(riid, &IID_IUnknown) ||
+            IsEqualIID(riid, &IID_IAudioClient) ||
+            IsEqualIID(riid, &IID_IAudioClient2))
         *ppv = iface;
     else if(IsEqualIID(riid, &IID_IMarshal))
         return IUnknown_QueryInterface(This->pUnkFTMarshal, riid, ppv);
@@ -738,18 +740,18 @@ static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
     return E_NOINTERFACE;
 }

-static ULONG WINAPI AudioClient_AddRef(IAudioClient *iface)
+static ULONG WINAPI AudioClient_AddRef(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;
     ref = InterlockedIncrement(&This->ref);
     TRACE("(%p) Refcount now %u\n", This, ref);
     return ref;
 }

-static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
+static ULONG WINAPI AudioClient_Release(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;
     ref = InterlockedDecrement(&This->ref);
     TRACE("(%p) Refcount now %u\n", This, ref);
@@ -1295,12 +1297,12 @@ static HRESULT ca_setup_audiounit(EDataFlow dataflow, AudioComponentInstance uni
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_Initialize(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration,
         REFERENCE_TIME period, const WAVEFORMATEX *fmt,
         const GUID *sessionguid)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr;
     OSStatus sc;
     int i;
@@ -1499,10 +1501,10 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient2 *iface,
         UINT32 *frames)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, frames);

@@ -1577,10 +1579,10 @@ static HRESULT ca_get_max_stream_latency(ACImpl *This, UInt32 *max)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient2 *iface,
         REFERENCE_TIME *out)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     UInt32 latency, stream_latency, size;
     AudioObjectPropertyAddress addr;
     OSStatus sc;
@@ -1642,10 +1644,10 @@ static HRESULT AudioClient_GetCurrentPadding_nolock(ACImpl *This,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient2 *iface,
         UINT32 *numpad)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr;

TRACE("(%p)->(%p)\n", This, numpad);
@@ -1662,11 +1664,11 @@ static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
     return hr;
 }

-static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *pwfx,
         WAVEFORMATEX **outpwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     AudioStreamBasicDescription dev_desc;
     AudioConverterRef converter;
     AudioComponentInstance unit;
@@ -1729,7 +1731,7 @@ static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,

unsupported:
     if(outpwfx){
-        hr = IAudioClient_GetMixFormat(&This->IAudioClient_iface, outpwfx);
+        hr = IAudioClient2_GetMixFormat(&This->IAudioClient2_iface, outpwfx);
         if(FAILED(hr))
             return hr;
         return S_FALSE;
@@ -1854,10 +1856,10 @@ static void convert_channel_layout(const AudioChannelLayout *ca_layout, WAVEFORM
     fmt->dwChannelMask = ca_mask;
 }

-static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient2 *iface,
         WAVEFORMATEX **pwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     WAVEFORMATEXTENSIBLE *fmt;
     OSStatus sc;
     UInt32 size;
@@ -1972,10 +1974,10 @@ static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient2 *iface,
         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);

@@ -1998,9 +2000,9 @@ void CALLBACK ca_period_cb(void *user, BOOLEAN timer)
         SetEvent(This->event);
 }

-static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Start(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -2037,9 +2039,9 @@ static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Stop(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -2062,9 +2064,9 @@ static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Reset(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -2102,10 +2104,10 @@ static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient2 *iface,
         HANDLE event)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, event);

@@ -2137,10 +2139,10 @@ static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
+static HRESULT WINAPI AudioClient_GetService(IAudioClient2 *iface, REFIID riid,
         void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);

@@ -2221,7 +2223,38 @@ static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
     return E_NOINTERFACE;
 }

-static const IAudioClientVtbl AudioClient_Vtbl =
+static HRESULT WINAPI AudioClient_IsOffloadCapable(IAudioClient2 *iface,
+        AUDIO_STREAM_CATEGORY category, BOOL *offload_capable)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(0x%x, %p)\n", This, category, offload_capable);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_SetClientProperties(IAudioClient2 *iface,
+        const AudioClientProperties *prop)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p)\n", This, prop);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_GetBufferSizeLimits(IAudioClient2 *iface,
+        const WAVEFORMATEX *format, BOOL event_driven, REFERENCE_TIME *min_duration,
+        REFERENCE_TIME *max_duration)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p, %u, %p, %p)\n", This, format, event_driven, min_duration, max_duration);
+
+    return E_NOTIMPL;
+}
+
+static const IAudioClient2Vtbl AudioClient2_Vtbl =
 {
     AudioClient_QueryInterface,
     AudioClient_AddRef,
@@ -2237,7 +2270,10 @@ static const IAudioClientVtbl AudioClient_Vtbl =
     AudioClient_Stop,
     AudioClient_Reset,
     AudioClient_SetEventHandle,
-    AudioClient_GetService
+    AudioClient_GetService,
+    AudioClient_IsOffloadCapable,
+    AudioClient_SetClientProperties,
+    AudioClient_GetBufferSizeLimits,
 };

static HRESULT WINAPI AudioRenderClient_QueryInterface(
@@ -2268,13 +2304,13 @@ static HRESULT WINAPI AudioRenderClient_QueryInterface(
 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_AddRef(&This->IAudioClient_iface);
+    return AudioClient_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_Release(&This->IAudioClient_iface);
+    return AudioClient_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
@@ -2425,13 +2461,13 @@ static HRESULT WINAPI AudioCaptureClient_QueryInterface(
 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
@@ -2593,13 +2629,13 @@ static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
@@ -2689,13 +2725,13 @@ static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
@@ -2734,7 +2770,7 @@ static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
     ret->client = client;
     if(client){
         ret->session = client->session;
-        AudioClient_AddRef(&client->IAudioClient_iface);
+        AudioClient2_AddRef(&client->IAudioClient2_iface);
     }

return ret;
@@ -2782,7 +2818,7 @@ static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
             OSSpinLockLock(&This->client->lock);
             This->client->session_wrapper = NULL;
             OSSpinLockUnlock(&This->client->lock);
-            AudioClient_Release(&This->client->IAudioClient_iface);
+            AudioClient_Release(&This->client->IAudioClient2_iface);
         }
         HeapFree(GetProcessHeap(), 0, This);
     }
@@ -3177,13 +3213,13 @@ static HRESULT WINAPI AudioStreamVolume_QueryInterface(
 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
diff --git a/dlls/wineoss.drv/mmdevdrv.c b/dlls/wineoss.drv/mmdevdrv.c
index 0c97b85f3a9..50c7db2c7c1 100644
--- a/dlls/wineoss.drv/mmdevdrv.c
+++ b/dlls/wineoss.drv/mmdevdrv.c
@@ -90,7 +90,7 @@ typedef struct _AudioSessionWrapper {
 } AudioSessionWrapper;

struct ACImpl {
-    IAudioClient IAudioClient_iface;
+    IAudioClient2 IAudioClient2_iface;
     IAudioRenderClient IAudioRenderClient_iface;
     IAudioCaptureClient IAudioCaptureClient_iface;
     IAudioClock IAudioClock_iface;
@@ -168,7 +168,7 @@ static struct list g_sessions = LIST_INIT(g_sessions);

static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client);

-static const IAudioClientVtbl AudioClient_Vtbl;
+static const IAudioClient2Vtbl AudioClient2_Vtbl;
 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl;
 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl;
 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl;
@@ -179,9 +179,9 @@ static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl;
 static const IChannelAudioVolumeVtbl ChannelAudioVolume_Vtbl;
 static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl;

-static inline ACImpl *impl_from_IAudioClient(IAudioClient *iface)
+static inline ACImpl *impl_from_IAudioClient2(IAudioClient2 *iface)
 {
-    return CONTAINING_RECORD(iface, ACImpl, IAudioClient_iface);
+    return CONTAINING_RECORD(iface, ACImpl, IAudioClient2_iface);
 }

static inline ACImpl *impl_from_IAudioRenderClient(IAudioRenderClient *iface)
@@ -605,7 +605,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev,
     if(!This)
         return E_OUTOFMEMORY;

-    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient_iface, &This->pUnkFTMarshal);
+    hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient2_iface, &This->pUnkFTMarshal);
     if (FAILED(hr)) {
          HeapFree(GetProcessHeap(), 0, This);
          return hr;
@@ -652,7 +652,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev,
     TRACE("min_channels: %d\n", This->ai.min_channels);
     TRACE("max_channels: %d\n", This->ai.max_channels);

-    This->IAudioClient_iface.lpVtbl = &AudioClient_Vtbl;
+    This->IAudioClient2_iface.lpVtbl = &AudioClient2_Vtbl;
     This->IAudioRenderClient_iface.lpVtbl = &AudioRenderClient_Vtbl;
     This->IAudioCaptureClient_iface.lpVtbl = &AudioCaptureClient_Vtbl;
     This->IAudioClock_iface.lpVtbl = &AudioClock_Vtbl;
@@ -665,23 +665,24 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev,
     This->parent = dev;
     IMMDevice_AddRef(This->parent);

-    IAudioClient_AddRef(&This->IAudioClient_iface);
-
-    *out = &This->IAudioClient_iface;
+    *out = (IAudioClient *)&This->IAudioClient2_iface;
+    IAudioClient2_AddRef(&This->IAudioClient2_iface);

return S_OK;
 }

-static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient2 *iface,
         REFIID riid, void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);

if(!ppv)
         return E_POINTER;
     *ppv = NULL;
-    if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClient))
+    if(IsEqualIID(riid, &IID_IUnknown) ||
+            IsEqualIID(riid, &IID_IAudioClient) ||
+            IsEqualIID(riid, &IID_IAudioClient2))
         *ppv = iface;
     else if(IsEqualIID(riid, &IID_IMarshal))
         return IUnknown_QueryInterface(This->pUnkFTMarshal, riid, ppv);
@@ -693,18 +694,18 @@ static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
     return E_NOINTERFACE;
 }

-static ULONG WINAPI AudioClient_AddRef(IAudioClient *iface)
+static ULONG WINAPI AudioClient_AddRef(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;
     ref = InterlockedIncrement(&This->ref);
     TRACE("(%p) Refcount now %u\n", This, ref);
     return ref;
 }

-static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
+static ULONG WINAPI AudioClient_Release(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;

ref = InterlockedDecrement(&This->ref);
@@ -721,7 +722,7 @@ static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
             CloseHandle(event);
         }

-        IAudioClient_Stop(iface);
+        IAudioClient2_Stop(iface);
         IMMDevice_Release(This->parent);
         IUnknown_Release(This->pUnkFTMarshal);
         This->lock.DebugInfo->Spare[0] = 0;
@@ -1028,12 +1029,12 @@ static HRESULT get_audio_session(const GUID *sessionguid,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_Initialize(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration,
         REFERENCE_TIME period, const WAVEFORMATEX *fmt,
         const GUID *sessionguid)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     int i;
     HRESULT hr;

@@ -1158,10 +1159,10 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient2 *iface,
         UINT32 *frames)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, frames);

@@ -1184,10 +1185,10 @@ static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient2 *iface,
         REFERENCE_TIME *latency)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, latency);

@@ -1210,10 +1211,10 @@ static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient2 *iface,
         UINT32 *numpad)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, numpad);

@@ -1236,11 +1237,11 @@ static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *pwfx,
         WAVEFORMATEX **outpwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     int fd = -1;
     HRESULT ret;

@@ -1282,10 +1283,10 @@ static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
     return ret;
 }

-static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient2 *iface,
         WAVEFORMATEX **pwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     WAVEFORMATEXTENSIBLE *fmt;
     int formats;

@@ -1375,10 +1376,10 @@ static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient2 *iface,
         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);

@@ -1559,9 +1560,9 @@ static void CALLBACK oss_period_callback(void *user, BOOLEAN timer)
         SetEvent(This->event);
 }

-static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Start(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -1596,9 +1597,9 @@ static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Stop(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -1622,9 +1623,9 @@ static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Reset(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)\n", This);

@@ -1660,10 +1661,10 @@ static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient2 *iface,
         HANDLE event)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p)\n", This, event);

@@ -1695,10 +1696,10 @@ static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
+static HRESULT WINAPI AudioClient_GetService(IAudioClient2 *iface, REFIID riid,
         void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);

@@ -1779,7 +1780,38 @@ static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
     return E_NOINTERFACE;
 }

-static const IAudioClientVtbl AudioClient_Vtbl =
+static HRESULT WINAPI AudioClient_IsOffloadCapable(IAudioClient2 *iface,
+        AUDIO_STREAM_CATEGORY category, BOOL *offload_capable)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(0x%x, %p)\n", This, category, offload_capable);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_SetClientProperties(IAudioClient2 *iface,
+        const AudioClientProperties *prop)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p)\n", This, prop);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_GetBufferSizeLimits(IAudioClient2 *iface,
+        const WAVEFORMATEX *format, BOOL event_driven, REFERENCE_TIME *min_duration,
+        REFERENCE_TIME *max_duration)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p, %u, %p, %p)\n", This, format, event_driven, min_duration, max_duration);
+
+    return E_NOTIMPL;
+}
+
+static const IAudioClient2Vtbl AudioClient2_Vtbl =
 {
     AudioClient_QueryInterface,
     AudioClient_AddRef,
@@ -1795,7 +1827,10 @@ static const IAudioClientVtbl AudioClient_Vtbl =
     AudioClient_Stop,
     AudioClient_Reset,
     AudioClient_SetEventHandle,
-    AudioClient_GetService
+    AudioClient_GetService,
+    AudioClient_IsOffloadCapable,
+    AudioClient_SetClientProperties,
+    AudioClient_GetBufferSizeLimits,
 };

static HRESULT WINAPI AudioRenderClient_QueryInterface(
@@ -1825,13 +1860,13 @@ static HRESULT WINAPI AudioRenderClient_QueryInterface(
 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_AddRef(&This->IAudioClient_iface);
+    return AudioClient_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_Release(&This->IAudioClient_iface);
+    return AudioClient_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
@@ -1991,13 +2026,13 @@ static HRESULT WINAPI AudioCaptureClient_QueryInterface(
 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
@@ -2167,13 +2202,13 @@ static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
@@ -2276,13 +2311,13 @@ static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
@@ -2321,7 +2356,7 @@ static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
     ret->client = client;
     if(client){
         ret->session = client->session;
-        AudioClient_AddRef(&client->IAudioClient_iface);
+        AudioClient_AddRef(&client->IAudioClient2_iface);
     }

return ret;
@@ -2369,7 +2404,7 @@ static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
             EnterCriticalSection(&This->client->lock);
             This->client->session_wrapper = NULL;
             LeaveCriticalSection(&This->client->lock);
-            AudioClient_Release(&This->client->IAudioClient_iface);
+            AudioClient_Release(&This->client->IAudioClient2_iface);
         }
         HeapFree(GetProcessHeap(), 0, This);
     }
@@ -2712,13 +2747,13 @@ static HRESULT WINAPI AudioStreamVolume_QueryInterface(
 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
diff --git a/dlls/winepulse.drv/mmdevdrv.c b/dlls/winepulse.drv/mmdevdrv.c
index e34c5ea5916..b8386cfe553 100644
--- a/dlls/winepulse.drv/mmdevdrv.c
+++ b/dlls/winepulse.drv/mmdevdrv.c
@@ -157,7 +157,7 @@ typedef struct _ACPacket {
 } ACPacket;

struct ACImpl {
-    IAudioClient IAudioClient_iface;
+    IAudioClient2 IAudioClient2_iface;
     IAudioRenderClient IAudioRenderClient_iface;
     IAudioCaptureClient IAudioCaptureClient_iface;
     IAudioClock IAudioClock_iface;
@@ -198,7 +198,7 @@ struct ACImpl {

static const WCHAR defaultW[] = {'P','u','l','s','e','a','u','d','i','o',0};

-static const IAudioClientVtbl AudioClient_Vtbl;
+static const IAudioClient2Vtbl AudioClient2_Vtbl;
 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl;
 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl;
 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl;
@@ -210,9 +210,9 @@ static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl;

static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client);

-static inline ACImpl *impl_from_IAudioClient(IAudioClient *iface)
+static inline ACImpl *impl_from_IAudioClient2(IAudioClient2 *iface)
 {
-    return CONTAINING_RECORD(iface, ACImpl, IAudioClient_iface);
+    return CONTAINING_RECORD(iface, ACImpl, IAudioClient2_iface);
 }

static inline ACImpl *impl_from_IAudioRenderClient(IAudioRenderClient *iface)
@@ -1228,7 +1228,7 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient
     if (!This)
         return E_OUTOFMEMORY;

-    This->IAudioClient_iface.lpVtbl = &AudioClient_Vtbl;
+    This->IAudioClient2_iface.lpVtbl = &AudioClient2_Vtbl;
     This->IAudioRenderClient_iface.lpVtbl = &AudioRenderClient_Vtbl;
     This->IAudioCaptureClient_iface.lpVtbl = &AudioCaptureClient_Vtbl;
     This->IAudioClock_iface.lpVtbl = &AudioClock_Vtbl;
@@ -1239,23 +1239,23 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient
     for (i = 0; i < PA_CHANNELS_MAX; ++i)
         This->vol[i] = 1.f;

-    hr = CoCreateFreeThreadedMarshaler((IUnknown*)&This->IAudioClient_iface, &This->marshal);
+    hr = CoCreateFreeThreadedMarshaler((IUnknown*)&This->IAudioClient2_iface, &This->marshal);
     if (hr) {
         HeapFree(GetProcessHeap(), 0, This);
         return hr;
     }
     IMMDevice_AddRef(This->parent);

-    *out = &This->IAudioClient_iface;
-    IAudioClient_AddRef(&This->IAudioClient_iface);
+    *out = (IAudioClient *)&This->IAudioClient2_iface;
+    IAudioClient2_AddRef(&This->IAudioClient2_iface);

return S_OK;
 }

-static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient2 *iface,
         REFIID riid, void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);

@@ -1263,7 +1263,9 @@ static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
         return E_POINTER;

*ppv = NULL;
-    if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClient))
+    if (IsEqualIID(riid, &IID_IUnknown) ||
+            IsEqualIID(riid, &IID_IAudioClient) ||
+            IsEqualIID(riid, &IID_IAudioClient2))
         *ppv = iface;
     if (*ppv) {
         IUnknown_AddRef((IUnknown*)*ppv);
@@ -1277,18 +1279,18 @@ static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
     return E_NOINTERFACE;
 }

-static ULONG WINAPI AudioClient_AddRef(IAudioClient *iface)
+static ULONG WINAPI AudioClient_AddRef(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;
     ref = InterlockedIncrement(&This->ref);
     TRACE("(%p) Refcount now %u\n", This, ref);
     return ref;
 }

-static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
+static ULONG WINAPI AudioClient_Release(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     ULONG ref;
     ref = InterlockedDecrement(&This->ref);
     TRACE("(%p) Refcount now %u\n", This, ref);
@@ -1587,12 +1589,12 @@ static HRESULT pulse_spec_from_waveformat(ACImpl *This, const WAVEFORMATEX *fmt)
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_Initialize(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration,
         REFERENCE_TIME period, const WAVEFORMATEX *fmt,
         const GUID *sessionguid)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr = S_OK;
     UINT32 bufsize_bytes;

@@ -1711,10 +1713,10 @@ exit:
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient2 *iface,
         UINT32 *out)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr;

TRACE("(%p)->(%p)\n", This, out);
@@ -1731,10 +1733,10 @@ static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient2 *iface,
         REFERENCE_TIME *latency)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     const pa_buffer_attr *attr;
     REFERENCE_TIME lat;
     HRESULT hr;
@@ -1781,10 +1783,10 @@ static void ACImpl_GetCapturePad(ACImpl *This, UINT32 *out)
         *out = This->held_bytes / pa_frame_size(&This->ss);
 }

-static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient2 *iface,
         UINT32 *out)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr;

TRACE("(%p)->(%p)\n", This, out);
@@ -1809,11 +1811,11 @@ static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient2 *iface,
         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *fmt,
         WAVEFORMATEX **out)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr = S_OK;
     WAVEFORMATEX *closest = NULL;
     BOOL exclusive;
@@ -1962,10 +1964,10 @@ static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient2 *iface,
         WAVEFORMATEX **pwfx)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     WAVEFORMATEXTENSIBLE *fmt = &pulse_fmt[This->dataflow == eCapture];

TRACE("(%p)->(%p)\n", This, pwfx);
@@ -1980,10 +1982,10 @@ static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient2 *iface,
         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);

TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);

@@ -1998,9 +2000,9 @@ static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
     return S_OK;
 }

-static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Start(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr = S_OK;
     int success;
     pa_operation *o;
@@ -2049,9 +2051,9 @@ static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
     return hr;
 }

-static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Stop(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr = S_OK;
     pa_operation *o;
     int success;
@@ -2088,9 +2090,9 @@ static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
     return hr;
 }

-static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
+static HRESULT WINAPI AudioClient_Reset(IAudioClient2 *iface)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr = S_OK;

TRACE("(%p)\n", This);
@@ -2143,10 +2145,10 @@ static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
     return hr;
 }

-static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
+static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient2 *iface,
         HANDLE event)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr;

TRACE("(%p)->(%p)\n", This, event);
@@ -2171,10 +2173,10 @@ static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
     return hr;
 }

-static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
+static HRESULT WINAPI AudioClient_GetService(IAudioClient2 *iface, REFIID riid,
         void **ppv)
 {
-    ACImpl *This = impl_from_IAudioClient(iface);
+    ACImpl *This = impl_from_IAudioClient2(iface);
     HRESULT hr;

TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);
@@ -2226,7 +2228,38 @@ static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
     return E_NOINTERFACE;
 }

-static const IAudioClientVtbl AudioClient_Vtbl =
+static HRESULT WINAPI AudioClient_IsOffloadCapable(IAudioClient2 *iface,
+        AUDIO_STREAM_CATEGORY category, BOOL *offload_capable)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(0x%x, %p)\n", This, category, offload_capable);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_SetClientProperties(IAudioClient2 *iface,
+        const AudioClientProperties *prop)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p)\n", This, prop);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI AudioClient_GetBufferSizeLimits(IAudioClient2 *iface,
+        const WAVEFORMATEX *format, BOOL event_driven, REFERENCE_TIME *min_duration,
+        REFERENCE_TIME *max_duration)
+{
+    ACImpl *This = impl_from_IAudioClient2(iface);
+
+    FIXME("(%p)->(%p, %u, %p, %p)\n", This, format, event_driven, min_duration, max_duration);
+
+    return E_NOTIMPL;
+}
+
+static const IAudioClient2Vtbl AudioClient2_Vtbl =
 {
     AudioClient_QueryInterface,
     AudioClient_AddRef,
@@ -2242,7 +2275,10 @@ static const IAudioClientVtbl AudioClient_Vtbl =
     AudioClient_Stop,
     AudioClient_Reset,
     AudioClient_SetEventHandle,
-    AudioClient_GetService
+    AudioClient_GetService,
+    AudioClient_IsOffloadCapable,
+    AudioClient_SetClientProperties,
+    AudioClient_GetBufferSizeLimits,
 };

static HRESULT WINAPI AudioRenderClient_QueryInterface(
@@ -2273,13 +2309,13 @@ static HRESULT WINAPI AudioRenderClient_QueryInterface(
 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_AddRef(&This->IAudioClient_iface);
+    return AudioClient_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    return AudioClient_Release(&This->IAudioClient_iface);
+    return AudioClient_Release(&This->IAudioClient2_iface);
 }

static void alloc_tmp_buffer(ACImpl *This, UINT32 bytes)
@@ -2438,13 +2474,13 @@ static HRESULT WINAPI AudioCaptureClient_QueryInterface(
 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
 {
     ACImpl *This = impl_from_IAudioCaptureClient(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
@@ -2586,13 +2622,13 @@ static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
 {
     ACImpl *This = impl_from_IAudioClock(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
@@ -2690,13 +2726,13 @@ static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
 {
     ACImpl *This = impl_from_IAudioClock2(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
@@ -2746,13 +2782,13 @@ static HRESULT WINAPI AudioStreamVolume_QueryInterface(
 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_AddRef(&This->IAudioClient_iface);
+    return IAudioClient2_AddRef(&This->IAudioClient2_iface);
 }

static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
 {
     ACImpl *This = impl_from_IAudioStreamVolume(iface);
-    return IAudioClient_Release(&This->IAudioClient_iface);
+    return IAudioClient2_Release(&This->IAudioClient2_iface);
 }

static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
@@ -2904,7 +2940,7 @@ static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
     ret->client = client;
     if (client) {
         ret->session = client->session;
-        AudioClient_AddRef(&client->IAudioClient_iface);
+        AudioClient_AddRef(&client->IAudioClient2_iface);
     }

return ret;
@@ -2950,7 +2986,7 @@ static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
     if (!ref) {
         if (This->client) {
             This->client->session_wrapper = NULL;
-            AudioClient_Release(&This->client->IAudioClient_iface);
+            AudioClient_Release(&This->client->IAudioClient2_iface);
         }
         HeapFree(GetProcessHeap(), 0, This);
     }