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

[Giovanni Mascellani]

From: Derek Lesho

The patch is originally by Derek Lesho, with some changes by
Giovanni Mascellani.

Signed-off-by: Giovanni Mascellani 
---
 dlls/winegstreamer/media_source.c | 42 +++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/dlls/winegstreamer/media_source.c b/dlls/winegstreamer/media_source.c
index eb5b9e366ec..d7dcd252a84 100644
--- a/dlls/winegstreamer/media_source.c
+++ b/dlls/winegstreamer/media_source.c
@@ -806,6 +806,48 @@ 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
+           source reader to pick from. */
+        stream_types = malloc( sizeof(IMFMediaType *) * 2 );
+
+        stream_types[0] = mf_media_type_from_wg_format(&format);
+        if (stream_types[0])
+        {
+            GUID base_subtype;
+            UINT32 sample_rate, channel_count, channel_mask;
+
+            IMFMediaType_GetGUID(stream_types[0], &MF_MT_SUBTYPE, &base_subtype);
+            IMFMediaType_GetUINT32(stream_types[0], &MF_MT_AUDIO_SAMPLES_PER_SECOND, &sample_rate);
+            IMFMediaType_GetUINT32(stream_types[0], &MF_MT_AUDIO_NUM_CHANNELS, &channel_count);
+            IMFMediaType_GetUINT32(stream_types[0], &MF_MT_AUDIO_CHANNEL_MASK, &channel_mask);
+
+            MFCreateMediaType(&stream_types[1]);
+            IMFMediaType_SetGUID(stream_types[1], &MF_MT_MAJOR_TYPE, &MFMediaType_Audio);
+            IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_SAMPLES_PER_SECOND, sample_rate);
+            IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_NUM_CHANNELS, channel_count);
+            IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_CHANNEL_MASK, channel_mask);
+            IMFMediaType_SetUINT32(stream_types[1], &MF_MT_ALL_SAMPLES_INDEPENDENT, TRUE);
+
+            if (IsEqualGUID(&base_subtype, &MFAudioFormat_Float))
+            {
+                IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_BITS_PER_SAMPLE, 16);
+                IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_BLOCK_ALIGNMENT, channel_count * 16 / 8);
+                IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_AVG_BYTES_PER_SECOND, sample_rate * channel_count * 16 / 8);
+                IMFMediaType_SetGUID(stream_types[1], &MF_MT_SUBTYPE, &MFAudioFormat_PCM);
+            }
+            else
+            {
+                IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_BITS_PER_SAMPLE, 32);
+                IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_BLOCK_ALIGNMENT, channel_count * 32 / 8);
+                IMFMediaType_SetUINT32(stream_types[1], &MF_MT_AUDIO_AVG_BYTES_PER_SECOND, sample_rate * channel_count * 32 / 8);
+                IMFMediaType_SetGUID(stream_types[1], &MF_MT_SUBTYPE, &MFAudioFormat_Float);
+            }
+
+            type_count = 2;
+        }
+    }
     else
     {
         stream_type = mf_media_type_from_wg_format(&format);