Include mpegaudiodecheader.h: It contains the prototype for

ff_mpegaudio_decode_header().

Originally committed as revision 22103 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/mpegaudiodecheader.c

@@ -28,6 +28,7 @@
 #include "avcodec.h"
 #include "mpegaudio.h"
 #include "mpegaudiodata.h"
+#include "mpegaudiodecheader.h"
 
 
 int ff_mpegaudio_decode_header(MPADecodeHeader *s, uint32_t header)