1 files changed, 30 insertions, 8 deletions

diff --git a/libavfilter/vf_yadif.c b/libavfilter/vf_yadif.c
index 42a7219d26..56e4489986 100644
--- a/libavfilter/vf_yadif.c
+++ b/libavfilter/vf_yadif.c
@@ -2,20 +2,18 @@
  * Copyright (C) 2006-2010 Michael Niedermayer <michaelni@gmx.at>
  *               2010      James Darnley <james.darnley@gmail.com>
  *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or modify
+ * FFmpeg is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License along
- * with Libav; if not, write to the Free Software Foundation, Inc.,
+ * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
@@ -46,6 +44,12 @@ typedef struct {
 
     int frame_pending;
 
+    /**
+     *  0: deinterlace all frames
+     *  1: only deinterlace frames marked as interlaced
+     */
+    int auto_enable;
+
     AVFilterBufferRef *cur;
     AVFilterBufferRef *next;
     AVFilterBufferRef *prev;
@@ -242,6 +246,14 @@ static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
     if (!yadif->cur)
         return;
 
+    if (yadif->auto_enable && !yadif->cur->video->interlaced) {
+        yadif->out  = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
+        avfilter_unref_buffer(yadif->prev);
+        yadif->prev = NULL;
+        avfilter_start_frame(ctx->outputs[0], yadif->out);
+        return;
+    }
+
     if (!yadif->prev)
         yadif->prev = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
 
@@ -261,6 +273,12 @@ static void end_frame(AVFilterLink *link)
     if (!yadif->out)
         return;
 
+    if (yadif->auto_enable && !yadif->cur->video->interlaced) {
+        avfilter_draw_slice(ctx->outputs[0], 0, link->h, 1);
+        avfilter_end_frame(ctx->outputs[0]);
+        return;
+    }
+
     return_frame(ctx, 0);
 }
 
@@ -301,6 +319,9 @@ static int poll_frame(AVFilterLink *link)
     }
     assert(yadif->next || !val);
 
+    if (yadif->auto_enable && yadif->next && !yadif->next->video->interlaced)
+        return val;
+
     return val * ((yadif->mode&1)+1);
 }
 
@@ -334,7 +355,7 @@ static int query_formats(AVFilterContext *ctx)
         PIX_FMT_NONE
     };
 
-    avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+    avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
 
     return 0;
 }
@@ -346,9 +367,10 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
 
     yadif->mode = 0;
     yadif->parity = -1;
+    yadif->auto_enable = 0;
     yadif->csp = NULL;
 
-    if (args) sscanf(args, "%d:%d", &yadif->mode, &yadif->parity);
+    if (args) sscanf(args, "%d:%d:%d", &yadif->mode, &yadif->parity, &yadif->auto_enable);
 
     yadif->filter_line = filter_line_c;
     if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
@@ -358,7 +380,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
     else if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX)
         yadif->filter_line = ff_yadif_filter_line_mmx;
 
-    av_log(ctx, AV_LOG_INFO, "mode:%d parity:%d\n", yadif->mode, yadif->parity);
+    av_log(ctx, AV_LOG_INFO, "mode:%d parity:%d auto_enable:%d\n", yadif->mode, yadif->parity, yadif->auto_enable);
 
     return 0;
 }