diff --git a/libavformat/riff.c b/libavformat/riff.c
index 818ef55d98..9bc637262c 100644
--- a/libavformat/riff.c
+++ b/libavformat/riff.c
@@ -420,11 +420,11 @@ const AVCodecTag ff_codec_wav_tags[] = {
 };
 
 const AVCodecGuid ff_codec_wav_guids[] = {
-    {AV_CODEC_ID_AC3,        {0x2C,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA}},
-    {AV_CODEC_ID_ATRAC3P,    {0xBF,0xAA,0x23,0xE9,0x58,0xCB,0x71,0x44,0xA1,0x19,0xFF,0xFA,0x01,0xE4,0xCE,0x62}},
-    {AV_CODEC_ID_EAC3,       {0xAF,0x87,0xFB,0xA7,0x02,0x2D,0xFB,0x42,0xA4,0xD4,0x05,0xCD,0x93,0x84,0x3B,0xDD}},
-    {AV_CODEC_ID_MP2,        {0x2B,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA}},
-    {AV_CODEC_ID_NONE}
+    { AV_CODEC_ID_AC3,      { 0x2C, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },
+    { AV_CODEC_ID_ATRAC3P,  { 0xBF, 0xAA, 0x23, 0xE9, 0x58, 0xCB, 0x71, 0x44, 0xA1, 0x19, 0xFF, 0xFA, 0x01, 0xE4, 0xCE, 0x62 } },
+    { AV_CODEC_ID_EAC3,     { 0xAF, 0x87, 0xFB, 0xA7, 0x02, 0x2D, 0xFB, 0x42, 0xA4, 0xD4, 0x05, 0xCD, 0x93, 0x84, 0x3B, 0xDD } },
+    { AV_CODEC_ID_MP2,      { 0x2B, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },
+    { AV_CODEC_ID_NONE }
 };
 
 const AVMetadataConv ff_riff_info_conv[] = {
@@ -443,6 +443,22 @@ const AVMetadataConv ff_riff_info_conv[] = {
     { 0 },
 };
 
+void ff_get_guid(AVIOContext *s, ff_asf_guid *g)
+{
+    av_assert0(sizeof(*g) == 16); //compiler will optimize this out
+    if (avio_read(s, *g, sizeof(*g)) < (int)sizeof(*g))
+        memset(*g, 0, sizeof(*g));
+}
+
+enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
+{
+    int i;
+    for (i = 0; guids[i].id != AV_CODEC_ID_NONE; i++)
+        if (!ff_guidcmp(guids[i].guid, guid))
+            return guids[i].id;
+    return AV_CODEC_ID_NONE;
+}
+
 #if CONFIG_MUXERS
 int64_t ff_start_tag(AVIOContext *pb, const char *tag)
 {
@@ -841,23 +857,6 @@ int ff_get_bmp_header(AVIOContext *pb, AVStream *st, unsigned *esize)
     return tag1;
 }
 
-void ff_get_guid(AVIOContext *s, ff_asf_guid *g)
-{
-    av_assert0(sizeof(*g) == 16); //compiler will optimize this out
-    if (avio_read(s, *g, sizeof(*g)) < (int)sizeof(*g))
-        memset(*g, 0, sizeof(*g));
-}
-
-enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
-{
-    int i;
-    for (i = 0; guids[i].id != AV_CODEC_ID_NONE; i++) {
-        if (!ff_guidcmp(guids[i].guid, guid))
-            return guids[i].id;
-    }
-    return AV_CODEC_ID_NONE;
-}
-
 int ff_read_riff_info(AVFormatContext *s, int64_t size)
 {
     int64_t start, end, cur;
diff --git a/libavformat/riff.h b/libavformat/riff.h
index 70b2f76171..cb8378922f 100644
--- a/libavformat/riff.h
+++ b/libavformat/riff.h
@@ -56,34 +56,8 @@ extern const AVCodecTag ff_codec_wav_tags[];
 
 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale);
 
-typedef uint8_t ff_asf_guid[16];
-
 int ff_read_riff_info(AVFormatContext *s, int64_t size);
 
-#define FF_PRI_GUID \
-    "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
-#define FF_ARG_GUID(g) \
-    g[0],g[1],g[2],g[3],g[4],g[5],g[6],g[7],g[8],g[9],g[10],g[11],g[12],g[13],g[14],g[15]
-
-static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
-{
-    return memcmp(g1, g2, sizeof(ff_asf_guid));
-}
-
-void ff_get_guid(AVIOContext *s, ff_asf_guid *g);
-
-typedef struct {
-    enum AVCodecID id;
-    ff_asf_guid guid;
-} AVCodecGuid;
-
-enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
-
-extern const AVCodecGuid ff_codec_wav_guids[];
-
-#define FF_MEDIASUBTYPE_BASE_GUID \
-    0x00,0x00,0x10,0x00,0x80,0x00,0x00,0xAA,0x00,0x38,0x9B,0x71
-
 /**
  * Write all recognized RIFF tags from s->metadata
  */
@@ -94,4 +68,32 @@ void ff_riff_write_info(AVFormatContext *s);
  */
 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);
 
+typedef uint8_t ff_asf_guid[16];
+
+typedef struct AVCodecGuid {
+    enum AVCodecID id;
+    ff_asf_guid guid;
+} AVCodecGuid;
+
+extern const AVCodecGuid ff_codec_wav_guids[];
+
+#define FF_PRI_GUID \
+    "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
+
+#define FF_ARG_GUID(g) \
+    g[0], g[1], g[2],  g[3],  g[4],  g[5],  g[6],  g[7], \
+    g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]
+
+#define FF_MEDIASUBTYPE_BASE_GUID \
+    0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
+
+static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
+{
+    return memcmp(g1, g2, sizeof(ff_asf_guid));
+}
+
+void ff_get_guid(AVIOContext *s, ff_asf_guid *g);
+
+enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
+
 #endif /* AVFORMAT_RIFF_H */