dmusic: Implement synth port IDirectMusicPortDownload_GetDLId.

dlls/dmusic/port.c

@@ -40,6 +40,8 @@ struct synth_port {
     DMUS_PORTPARAMS params;
     int nrofgroups;
     DMUSIC_PRIVATE_CHANNEL_GROUP group[1];
+
+    DWORD next_dlid;
 };
 
 static inline IDirectMusicDownloadedInstrumentImpl* impl_from_IDirectMusicDownloadedInstrument(IDirectMusicDownloadedInstrument *iface)
@@ -595,11 +597,17 @@ static HRESULT WINAPI synth_port_download_AllocateBuffer(IDirectMusicPortDownloa
     return S_OK;
 }
 
-static HRESULT WINAPI synth_port_download_GetDLId(IDirectMusicPortDownload *iface, DWORD *start_DLId, DWORD count)
+static HRESULT WINAPI synth_port_download_GetDLId(IDirectMusicPortDownload *iface, DWORD *first, DWORD count)
 {
     struct synth_port *This = synth_from_IDirectMusicPortDownload(iface);
 
-    FIXME("(%p/%p, %p, %lu): stub\n", iface, This, start_DLId, count);
+    TRACE("(%p/%p, %p, %lu)\n", iface, This, first, count);
+
+    if (!first) return E_POINTER;
+    if (!count) return E_INVALIDARG;
+
+    *first = This->next_dlid;
+    This->next_dlid += count;
 
     return S_OK;
 }

dlls/dmusic/tests/dmusic.c

@@ -1081,14 +1081,14 @@ static void test_port_download(void)
 
     /* GetDLId allocates the given number of slots and returns only the first */
     hr = IDirectMusicPortDownload_GetDLId(port, NULL, 0);
-    todo_wine ok(hr == E_POINTER, "got %#lx\n", hr);
+    ok(hr == E_POINTER, "got %#lx\n", hr);
     hr = IDirectMusicPortDownload_GetDLId(port, ids, 0);
-    todo_wine ok(hr == E_INVALIDARG, "got %#lx\n", hr);
+    ok(hr == E_INVALIDARG, "got %#lx\n", hr);
 
     memset(ids, 0xcc, sizeof(ids));
     hr = IDirectMusicPortDownload_GetDLId(port, ids, 4);
     ok(hr == S_OK, "got %#lx\n", hr);
-    todo_wine ok(ids[0] == 0, "got %#lx\n", ids[0]);
+    ok(ids[0] == 0, "got %#lx\n", ids[0]);
     ok(ids[1] == 0xcccccccc, "got %#lx\n", ids[1]);
 
     /* GetBuffer looks up allocated ids to find downloaded buffers */
@@ -1168,7 +1168,7 @@ static void test_port_download(void)
     /* DLIds are never released */
     hr = IDirectMusicPortDownload_GetDLId(port, ids, 1);
     ok(hr == S_OK, "got %#lx\n", hr);
-    todo_wine ok(ids[0] == 4, "got %#lx\n", ids[0]);
+    ok(ids[0] == 4, "got %#lx\n", ids[0]);
 
     IDirectMusicDownload_Release(download);