winepulse: Move pulse_get_buffer_size to unix lib.

dlls/winepulse.drv/mmdevdrv.c

@@ -612,20 +612,15 @@ static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient3 *iface,
         UINT32 *out)
 {
     ACImpl *This = impl_from_IAudioClient3(iface);
-    HRESULT hr;
 
     TRACE("(%p)->(%p)\n", This, out);
 
     if (!out)
         return E_POINTER;
+    if (!This->pulse_stream)
+        return AUDCLNT_E_NOT_INITIALIZED;
 
-    pulse->lock();
-    hr = pulse_stream_valid(This);
-    if (SUCCEEDED(hr))
-        *out = This->pulse_stream->bufsize_frames;
-    pulse->unlock();
-
-    return hr;
+    return pulse->get_buffer_size(This->pulse_stream, out);
 }
 
 static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient3 *iface,

dlls/winepulse.drv/pulse.c

@@ -1532,6 +1532,20 @@ static HRESULT WINAPI pulse_release_render_buffer(struct pulse_stream *stream, U
     return S_OK;
 }
 
+static HRESULT WINAPI pulse_get_buffer_size(struct pulse_stream *stream, UINT32 *out)
+{
+    HRESULT hr = S_OK;
+
+    pulse_lock();
+    if (!pulse_stream_valid(stream))
+        hr = AUDCLNT_E_DEVICE_INVALIDATED;
+    else
+        *out = stream->bufsize_frames;
+    pulse_unlock();
+
+    return hr;
+}
+
 static void WINAPI pulse_set_volumes(struct pulse_stream *stream, float master_volume,
                                      const float *volumes, const float *session_volumes)
 {
@@ -1573,6 +1587,7 @@ static const struct unix_funcs unix_funcs =
     pulse_timer_loop,
     pulse_get_render_buffer,
     pulse_release_render_buffer,
+    pulse_get_buffer_size,
     pulse_set_volumes,
     pulse_set_event_handle,
     pulse_test_connect,

dlls/winepulse.drv/unixlib.h

@@ -84,6 +84,7 @@ struct unix_funcs
     HRESULT (WINAPI *get_render_buffer)(struct pulse_stream *stream, UINT32 frames, BYTE **data);
     HRESULT (WINAPI *release_render_buffer)(struct pulse_stream *stream, UINT32 written_frames,
                                             DWORD flags);
+    HRESULT (WINAPI *get_buffer_size)(struct pulse_stream *stream, UINT32 *out);
     void (WINAPI *set_volumes)(struct pulse_stream *stream, float master_volume,
                                const float *volumes, const float *session_volumes);
     HRESULT (WINAPI *set_event_handle)(struct pulse_stream *stream, HANDLE event);