From 43564b799787749cf14a33a47e852d34de73758b Mon Sep 17 00:00:00 2001
From: James Darnley <james.darnley@gmail.com>
Date: Sun, 2 May 2010 16:30:50 -0700
Subject: [PATCH] Add field-order detection to y4m demuxer

---
 input/y4m.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/input/y4m.c b/input/y4m.c
index 842b9860..fd421402 100644
--- a/input/y4m.c
+++ b/input/y4m.c
@@ -104,13 +104,21 @@ static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, c
             case 'I': /* Interlace type */
                 switch( *tokstart++ )
                 {
-                    case 'p': break;
-                    case '?':
                     case 't':
+                        info->interlaced = 1;
+                        info->tff = 1;
+                        break;
                     case 'b':
+                        info->interlaced = 1;
+                        info->tff = 0;
+                        break;
                     case 'm':
-                    default:
                         info->interlaced = 1;
+                        break;
+                    //case '?':
+                    //case 'p':
+                    default:
+                        break;
                 }
                 break;
             case 'F': /* Frame rate - 0:0 if unknown */
-- 
2.40.0