Enforce that codecs wait for their metadata in a proper-ish and consistent manner. Sort of a halfway patch; best would be to give them an internal copy of the current track information which lasts unaltered by playback until a track switch or unload.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29348 a1c6a512-1295-4272-9138-f99709370657

apps/codecs/shorten.c

@@ -57,8 +57,8 @@ next_track:
         return CODEC_ERROR;
     }
 
-    while (!*ci->taginfo_ready)
-        ci->yield();
+    if (codec_wait_taginfo() != 0)
+        goto request_next_track;
 
     codec_set_replaygain(ci->id3);
 
@@ -153,6 +153,7 @@ seek_start:
         sc.bitindex = sc.gb.index - 8*consumed;
     }
 
+request_next_track:
     if (ci->request_next_track())
         goto next_track;