From 47a0d393504d6726c4a235951153bee0abb3f7d6 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Sat, 17 Jan 2015 22:28:46 +0100
Subject: [PATCH] h264: move mb_skip_run into the per-slice context

---
 libavcodec/h264.h       | 3 ++-
 libavcodec/h264_cavlc.c | 8 ++++----
 libavcodec/h264_slice.c | 4 ++--
 libavcodec/svq3.c       | 4 ++--
 4 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/libavcodec/h264.h b/libavcodec/h264.h
index 0696000294..04ed625c37 100644
--- a/libavcodec/h264.h
+++ b/libavcodec/h264.h
@@ -356,6 +356,8 @@ typedef struct H264SliceContext {
     ptrdiff_t mb_linesize;  ///< may be equal to s->linesize or s->linesize * 2, for mbaff
     ptrdiff_t mb_uvlinesize;
 
+    int mb_skip_run;
+
     int redundant_pic_count;
 
     /**
@@ -525,7 +527,6 @@ typedef struct H264Context {
     int mb_x, mb_y;
     int resync_mb_x;
     int resync_mb_y;
-    int mb_skip_run;
     int mb_height, mb_width;
     int mb_stride;
     int mb_num;
diff --git a/libavcodec/h264_cavlc.c b/libavcodec/h264_cavlc.c
index b16b6b66c2..0ef5dcfe4f 100644
--- a/libavcodec/h264_cavlc.c
+++ b/libavcodec/h264_cavlc.c
@@ -709,12 +709,12 @@ int ff_h264_decode_mb_cavlc(H264Context *h, H264SliceContext *sl)
     cbp = 0; /* avoid warning. FIXME: find a solution without slowing
                 down the code */
     if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
-        if(h->mb_skip_run==-1)
-            h->mb_skip_run= get_ue_golomb(&h->gb);
+        if (sl->mb_skip_run == -1)
+            sl->mb_skip_run = get_ue_golomb(&h->gb);
 
-        if (h->mb_skip_run--) {
+        if (sl->mb_skip_run--) {
             if(FRAME_MBAFF(h) && (h->mb_y&1) == 0){
-                if(h->mb_skip_run==0)
+                if (sl->mb_skip_run == 0)
                     h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&h->gb);
             }
             decode_mb_skip(h, sl);
diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c
index 2e319e9daa..43185c59b4 100644
--- a/libavcodec/h264_slice.c
+++ b/libavcodec/h264_slice.c
@@ -2183,7 +2183,7 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg)
     H264Context       *h = sl->h264;
     int lf_x_start = h->mb_x;
 
-    h->mb_skip_run = -1;
+    sl->mb_skip_run = -1;
 
     h->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
                     avctx->codec_id != AV_CODEC_ID_H264 ||
@@ -2314,7 +2314,7 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg)
                 }
             }
 
-            if (get_bits_left(&h->gb) <= 0 && h->mb_skip_run <= 0) {
+            if (get_bits_left(&h->gb) <= 0 && sl->mb_skip_run <= 0) {
                 tprintf(h->avctx, "slice end %d %d\n",
                         get_bits_count(&h->gb), h->gb.size_in_bits);
 
diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index 316699c37c..d8aefa633e 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -821,11 +821,11 @@ static int svq3_decode_slice_header(AVCodecContext *avctx)
 
     if ((header & 0x9F) == 2) {
         i              = (h->mb_num < 64) ? 6 : (1 + av_log2(h->mb_num - 1));
-        h->mb_skip_run = get_bits(&h->gb, i) -
+        sl->mb_skip_run = get_bits(&h->gb, i) -
                          (h->mb_y * h->mb_width + h->mb_x);
     } else {
         skip_bits1(&h->gb);
-        h->mb_skip_run = 0;
+        sl->mb_skip_run = 0;
     }
 
     sl->slice_num     = get_bits(&h->gb, 8);