From d753173a55f6615baa108a0a664eccfe07568290 Mon Sep 17 00:00:00 2001
From: Fabrice Bellard <fabrice@bellard.org>
Date: Sat, 11 Aug 2001 22:08:23 +0000
Subject: [PATCH] fixed last zero mv for field - fixed mismatch handling for
 intra coefs

Originally committed as revision 75 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/mpeg12.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index a0f8a65fc5..25b8babbe2 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -633,6 +633,8 @@ static int mpeg_decode_mb(MpegEncContext *s,
         s->mv_type = MV_TYPE_16X16;
         s->last_mv[0][0][0] = 0;
         s->last_mv[0][0][1] = 0;
+        s->last_mv[0][1][0] = 0;
+        s->last_mv[0][1][1] = 0;
         s->mv[0][0][0] = 0;
         s->mv[0][0][1] = 0;
     } else if (mb_type & (MB_FOR | MB_BACK)) {
@@ -641,7 +643,7 @@ static int mpeg_decode_mb(MpegEncContext *s,
         for(i=0;i<2;i++) {
             if (mb_type & (MB_FOR >> i)) {
                 s->mv_dir |= (MV_DIR_FORWARD >> i);
-                dprintf("mv_type=%d\n", motion_type);
+                dprintf("motion_type=%d\n", motion_type);
                 switch(motion_type) {
                 case MT_FRAME: /* or MT_16X8 */
                     if (s->picture_structure == PICT_FRAME) {
@@ -1006,7 +1008,6 @@ static int mpeg2_decode_block_intra(MpegEncContext *s,
         scan_table = ff_alternate_vertical_scan;
     else
         scan_table = zigzag_direct;
-    mismatch = 1;
 
     /* DC coef */
     component = (n <= 3 ? 0 : n - 4 + 1);
@@ -1018,6 +1019,7 @@ static int mpeg2_decode_block_intra(MpegEncContext *s,
     s->last_dc[component] = dc;
     block[0] = dc << (3 - s->intra_dc_precision);
     dprintf("dc=%d\n", block[0]);
+    mismatch = block[0] ^ 1;
     i = 1;
     if (s->intra_vlc_format)
         rl = &rl_mpeg2;
-- 
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