winepulse: Move pulse_get_latency to unix lib.

dlls/winepulse.drv/mmdevdrv.c

@@ -627,33 +627,15 @@ static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient3 *iface,
         REFERENCE_TIME *latency)
 {
     ACImpl *This = impl_from_IAudioClient3(iface);
-    const pa_buffer_attr *attr;
-    REFERENCE_TIME lat;
-    HRESULT hr;
 
     TRACE("(%p)->(%p)\n", This, latency);
 
     if (!latency)
         return E_POINTER;
+    if (!This->pulse_stream)
+        return AUDCLNT_E_NOT_INITIALIZED;
 
-    pulse->lock();
-    hr = pulse_stream_valid(This);
-    if (FAILED(hr)) {
-        pulse->unlock();
-        return hr;
-    }
-    attr = pa_stream_get_buffer_attr(This->pulse_stream->stream);
-    if (This->dataflow == eRender){
-        lat = attr->minreq / pa_frame_size(&This->pulse_stream->ss);
-    }else
-        lat = attr->fragsize / pa_frame_size(&This->pulse_stream->ss);
-    *latency = 10000000;
-    *latency *= lat;
-    *latency /= This->pulse_stream->ss.rate;
-    *latency += pulse_config.modes[0].def_period;
-    pulse->unlock();
-    TRACE("Latency: %u ms\n", (DWORD)(*latency / 10000));
-    return S_OK;
+    return pulse->get_latency(This->pulse_stream, latency);
 }
 
 static void ACImpl_GetRenderPad(ACImpl *This, UINT32 *out)

dlls/winepulse.drv/pulse.c

@@ -1546,6 +1546,27 @@ static HRESULT WINAPI pulse_get_buffer_size(struct pulse_stream *stream, UINT32
     return hr;
 }
 
+static HRESULT WINAPI pulse_get_latency(struct pulse_stream *stream, REFERENCE_TIME *latency)
+{
+    const pa_buffer_attr *attr;
+    REFERENCE_TIME lat;
+
+    pulse_lock();
+    if (!pulse_stream_valid(stream)) {
+        pulse_unlock();
+        return AUDCLNT_E_DEVICE_INVALIDATED;
+    }
+    attr = pa_stream_get_buffer_attr(stream->stream);
+    if (stream->dataflow == eRender)
+        lat = attr->minreq / pa_frame_size(&stream->ss);
+    else
+        lat = attr->fragsize / pa_frame_size(&stream->ss);
+    *latency = (lat * 10000000) / stream->ss.rate + pulse_def_period[0];
+    pulse_unlock();
+    TRACE("Latency: %u ms\n", (DWORD)(*latency / 10000));
+    return S_OK;
+}
+
 static void WINAPI pulse_set_volumes(struct pulse_stream *stream, float master_volume,
                                      const float *volumes, const float *session_volumes)
 {
@@ -1588,6 +1609,7 @@ static const struct unix_funcs unix_funcs =
     pulse_get_render_buffer,
     pulse_release_render_buffer,
     pulse_get_buffer_size,
+    pulse_get_latency,
     pulse_set_volumes,
     pulse_set_event_handle,
     pulse_test_connect,

dlls/winepulse.drv/unixlib.h

@@ -85,6 +85,7 @@ struct unix_funcs
     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);
+    HRESULT (WINAPI *get_latency)(struct pulse_stream *stream, REFERENCE_TIME *latency);
     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);