From 61856d06eb30955290911140e6745bad93a25323 Mon Sep 17 00:00:00 2001
From: Alex Converse <alex.converse@gmail.com>
Date: Tue, 25 Oct 2011 18:37:24 -0700
Subject: [PATCH] probe: Restore identification of files with very large id3
 tags and no extension.

Restore behavior of identifying files with huge id3 tags as
mp3 at AVPROBE_SCORE_MAX/4. This was broken in r25378 and subsequently
removed in r25929.
---
 libavformat/utils.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 20be871669..81eee97a84 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -347,6 +347,14 @@ AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score
             }
     }
 
+    if (!fmt && id3 && *score_max < AVPROBE_SCORE_MAX/4-1) {
+        while ((fmt = av_iformat_next(fmt)))
+            if (fmt->extensions && av_match_ext("mp3", fmt->extensions)) {
+                *score_max = AVPROBE_SCORE_MAX/4-1;
+                break;
+            }
+    }
+
     return fmt;
 }