avcodec/mpegaudio_parser: Skip APE tags when parsing mp3 packets.

Otherwise the decoder will throw "Missing header" errors when the
packets are sent for decoding.

This is similar to 89a420b7.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/mpegaudio_parser.c

@@ -23,6 +23,7 @@
 #include "parser.h"
 #include "mpegaudiodecheader.h"
 #include "libavutil/common.h"
+#include "libavformat/apetag.h" // for APE tag.
 #include "libavformat/id3v1.h" // for ID3v1_TAG_SIZE
 
 typedef struct MpegAudioParseContext {
@@ -120,6 +121,12 @@ static int mpegaudio_parse(AVCodecParserContext *s1,
         return next;
     }
 
+    if (flush && buf_size >= APE_TAG_FOOTER_BYTES && memcmp(buf, APE_TAG_PREAMBLE, 8) == 0) {
+        *poutbuf = NULL;
+        *poutbuf_size = 0;
+        return next;
+    }
+
     *poutbuf = buf;
     *poutbuf_size = buf_size;
     return next;