Factorize field_end() out.

Originally committed as revision 18472 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h264.c

@@ -3614,6 +3614,51 @@ static void init_scan_tables(H264Context *h){
     }
 }
 
+static void field_end(H264Context *h){
+    MpegEncContext * const s = &h->s;
+    AVCodecContext * const avctx= s->avctx;
+    s->mb_y= 0;
+
+    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
+    s->current_picture_ptr->pict_type= s->pict_type;
+
+    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
+        ff_vdpau_h264_set_reference_frames(s);
+
+    if(!s->dropable) {
+        execute_ref_pic_marking(h, h->mmco, h->mmco_index);
+        h->prev_poc_msb= h->poc_msb;
+        h->prev_poc_lsb= h->poc_lsb;
+    }
+    h->prev_frame_num_offset= h->frame_num_offset;
+    h->prev_frame_num= h->frame_num;
+
+    if (avctx->hwaccel) {
+        if (avctx->hwaccel->end_frame(avctx) < 0)
+            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
+    }
+
+    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
+        ff_vdpau_h264_picture_complete(s);
+
+    /*
+     * FIXME: Error handling code does not seem to support interlaced
+     * when slices span multiple rows
+     * The ff_er_add_slice calls don't work right for bottom
+     * fields; they cause massive erroneous error concealing
+     * Error marking covers both fields (top and bottom).
+     * This causes a mismatched s->error_count
+     * and a bad error table. Further, the error count goes to
+     * INT_MAX when called for bottom field, because mb_y is
+     * past end by one (callers fault) and resync_mb_y != 0
+     * causes problems for the first MB line, too.
+     */
+    if (!FIELD_PICTURE)
+        ff_er_frame_end(s);
+
+    MPV_frame_end(s);
+}
+
 /**
  * Replicates H264 "master" context to thread contexts.
  */
@@ -7719,46 +7764,7 @@ static int decode_frame(AVCodecContext *avctx,
         Picture *cur = s->current_picture_ptr;
         int i, pics, cross_idr, out_of_order, out_idx;
 
-        s->mb_y= 0;
-
-        s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
-        s->current_picture_ptr->pict_type= s->pict_type;
-
-        if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
-            ff_vdpau_h264_set_reference_frames(s);
-
-        if(!s->dropable) {
-            execute_ref_pic_marking(h, h->mmco, h->mmco_index);
-            h->prev_poc_msb= h->poc_msb;
-            h->prev_poc_lsb= h->poc_lsb;
-        }
-        h->prev_frame_num_offset= h->frame_num_offset;
-        h->prev_frame_num= h->frame_num;
-
-        if (avctx->hwaccel) {
-            if (avctx->hwaccel->end_frame(avctx) < 0)
-                av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
-        }
-
-        if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
-            ff_vdpau_h264_picture_complete(s);
-
-        /*
-         * FIXME: Error handling code does not seem to support interlaced
-         * when slices span multiple rows
-         * The ff_er_add_slice calls don't work right for bottom
-         * fields; they cause massive erroneous error concealing
-         * Error marking covers both fields (top and bottom).
-         * This causes a mismatched s->error_count
-         * and a bad error table. Further, the error count goes to
-         * INT_MAX when called for bottom field, because mb_y is
-         * past end by one (callers fault) and resync_mb_y != 0
-         * causes problems for the first MB line, too.
-         */
-        if (!FIELD_PICTURE)
-            ff_er_frame_end(s);
-
-        MPV_frame_end(s);
+        field_end(h);
 
         if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
             /* Wait for second field. */