winegstreamer: Ensure that the source reports both PCM and floating point audio formats.

dlls/mfreadwrite/tests/mfplat.c

@@ -752,9 +752,6 @@ static void test_source_reader(void)
     if (SUCCEEDED(hr))
         IMFMediaType_Release(mediatype);
 
-    hr = IMFSourceReader_GetNativeMediaType(reader, MF_SOURCE_READER_FIRST_AUDIO_STREAM, 1, &mediatype);
-    ok(hr == MF_E_NO_MORE_TYPES, "Unexpected hr %#x.\n", hr);
-
     /* Current media type. */
     hr = IMFSourceReader_GetCurrentMediaType(reader, MF_SOURCE_READER_FIRST_VIDEO_STREAM, &mediatype);
     ok(hr == MF_E_INVALIDSTREAMNUMBER, "Unexpected hr %#x.\n", hr);

dlls/winegstreamer/media_source.c

@@ -806,6 +806,31 @@ static HRESULT media_stream_init_desc(struct media_stream *stream)
                 goto done;
         }
     }
+    else if (format.major_type == WG_MAJOR_TYPE_AUDIO)
+    {
+        /* Expose at least one PCM and one floating point type for the
+           consumer to pick from. */
+        static const enum wg_audio_format audio_types[] =
+        {
+            WG_AUDIO_FORMAT_S16LE,
+            WG_AUDIO_FORMAT_F32LE,
+        };
+
+        stream_types = malloc( sizeof(IMFMediaType *) * (ARRAY_SIZE(audio_types) + 1) );
+
+        stream_types[0] = mf_media_type_from_wg_format(&format);
+        type_count = 1;
+
+        for (i = 0; i < ARRAY_SIZE(audio_types); i++)
+        {
+            struct wg_format new_format;
+            if (format.u.audio.format == audio_types[i])
+                continue;
+            new_format = format;
+            new_format.u.audio.format = audio_types[i];
+            stream_types[type_count++] = mf_media_type_from_wg_format(&new_format);
+        }
+    }
     else
     {
         stream_type = mf_media_type_from_wg_format(&format);