From 381a722562bcc0b623acf6a00a583fe989bcb72a Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Sat, 30 Nov 2013 11:34:37 +0100
Subject: [PATCH] mpegvideo: split the encoding-only parts of
 ff_MPV_frame_end() into a separate function

---
 libavcodec/mpegvideo.c     | 20 ++------------------
 libavcodec/mpegvideo_enc.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 46 insertions(+), 19 deletions(-)

diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 8ca5e3b..6301090 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -1657,12 +1657,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
     return 0;
 }
 
-/* generic function for encode/decode called after a
- * frame has been coded/decoded. */
+/* called after a frame has been decoded. */
 void ff_MPV_frame_end(MpegEncContext *s)
 {
-    int i;
-
 #if FF_API_XVMC
 FF_DISABLE_DEPRECATION_WARNINGS
     /* redraw edges for the frame if decoding didn't complete */
@@ -1672,7 +1669,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
     } else
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif /* FF_API_XVMC */
-    if ((s->er.error_count || s->encoding) &&
+    if (s->er.error_count  &&
         !s->avctx->hwaccel &&
         s->unrestricted_mv &&
         s->current_picture.reference &&
@@ -1697,11 +1694,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
     emms_c();
 
-    s->last_pict_type                 = s->pict_type;
-    s->last_lambda_for [s->pict_type] = s->current_picture_ptr->f.quality;
-    if (s->pict_type!= AV_PICTURE_TYPE_B) {
-        s->last_non_b_pict_type = s->pict_type;
-    }
 #if 0
     /* copy back current_picture variables */
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
@@ -1713,20 +1705,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
     assert(i < MAX_PICTURE_COUNT);
 #endif
 
-    if (s->encoding) {
-        /* release non-reference frames */
-        for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-            if (!s->picture[i].reference)
-                ff_mpeg_unref_picture(s, &s->picture[i]);
-        }
-    }
     // clear copies, to avoid confusion
 #if 0
     memset(&s->last_picture,    0, sizeof(Picture));
     memset(&s->next_picture,    0, sizeof(Picture));
     memset(&s->current_picture, 0, sizeof(Picture));
 #endif
-    s->avctx->coded_frame = &s->current_picture_ptr->f;
 
     if (s->current_picture.reference)
         ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 470418a..258bfcf 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -1359,6 +1359,49 @@ no_output_pic:
     return 0;
 }
 
+static void frame_end(MpegEncContext *s)
+{
+    int i;
+
+    if (s->unrestricted_mv &&
+        s->current_picture.reference &&
+        !s->intra_only) {
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
+        int hshift = desc->log2_chroma_w;
+        int vshift = desc->log2_chroma_h;
+        s->dsp.draw_edges(s->current_picture.f.data[0], s->linesize,
+                          s->h_edge_pos, s->v_edge_pos,
+                          EDGE_WIDTH, EDGE_WIDTH,
+                          EDGE_TOP | EDGE_BOTTOM);
+        s->dsp.draw_edges(s->current_picture.f.data[1], s->uvlinesize,
+                          s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
+                          EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
+                          EDGE_TOP | EDGE_BOTTOM);
+        s->dsp.draw_edges(s->current_picture.f.data[2], s->uvlinesize,
+                          s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
+                          EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
+                          EDGE_TOP | EDGE_BOTTOM);
+    }
+
+    emms_c();
+
+    s->last_pict_type                 = s->pict_type;
+    s->last_lambda_for [s->pict_type] = s->current_picture_ptr->f.quality;
+    if (s->pict_type!= AV_PICTURE_TYPE_B)
+        s->last_non_b_pict_type = s->pict_type;
+
+    if (s->encoding) {
+        /* release non-reference frames */
+        for (i = 0; i < MAX_PICTURE_COUNT; i++) {
+            if (!s->picture[i].reference)
+                ff_mpeg_unref_picture(s, &s->picture[i]);
+        }
+    }
+
+    s->avctx->coded_frame = &s->current_picture_ptr->f;
+
+}
+
 int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
                           const AVFrame *pic_arg, int *got_packet)
 {
@@ -1414,7 +1457,7 @@ vbv_retry:
         avctx->p_count     = s->mb_num - s->i_count - s->skip_count;
         avctx->skip_count  = s->skip_count;
 
-        ff_MPV_frame_end(s);
+        frame_end(s);
 
         if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
             ff_mjpeg_encode_picture_trailer(s);
-- 
2.7.4