Fix support float in RF64

include/vlc_codecs.h

@@ -309,6 +309,13 @@ static const GUID VLC_KSDATAFORMAT_SUBTYPE_PCM = {0xE923AABF, 0xCB58, 0x4471, {0
 #define KSDATAFORMAT_SUBTYPE_PCM VLC_KSDATAFORMAT_SUBTYPE_PCM
 #endif
 
+#ifndef _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT_
+#define _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT_ {0x00000003, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}}
+static const GUID VLC_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {0x00000003, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
+#define KSDATAFORMAT_SUBTYPE_IEEE_FLOAT VLC_KSDATAFORMAT_SUBTYPE_PCM
+#endif
+
+
 #ifndef _KSDATAFORMAT_SUBTYPE_UNKNOWN_
 #define _KSDATAFORMAT_SUBTYPE_UNKNOWN_ {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}
 static const GUID VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN = {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
@@ -441,6 +448,7 @@ static const struct
 sub_format_tag_to_fourcc[] =
 {
     { _KSDATAFORMAT_SUBTYPE_PCM_, VLC_FOURCC( 'a', 'r', 'a', 'w' ), "PCM" },
+    { _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT_, VLC_FOURCC( 'a', 'f', 'l', 't' ), "Float PCM" },
     { _KSDATAFORMAT_SUBTYPE_UNKNOWN_, VLC_FOURCC( 'u', 'n', 'd', 'f' ), "Unknown" }
 };