Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavfilter / vf_blackframe.c

diff --git a/libavfilter/vf_blackframe.c b/libavfilter/vf_blackframe.c
index bf0b18bea3680d7da648a51302435de03edb200f..dc3344489a552dbbec4a3e798291637ff45cb97a 100644 (file)
--- a/libavfilter/vf_blackframe.c
+++ b/libavfilter/vf_blackframe.c
@@ -4,20 +4,20 @@
  * Copyright (c) 2006 Julian Hall
  * Copyright (c) 2002-2003 Brian J. Murrell
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * 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.
  */
 
@@ -28,6 +28,7 @@
  */
 
 #include "avfilter.h"
+#include "internal.h"
 #include "formats.h"
 #include "internal.h"
 #include "video.h"
@@ -37,6 +38,7 @@ typedef struct {
     unsigned int bthresh; ///< black threshold
     unsigned int frame;   ///< frame number
     unsigned int nblack;  ///< number of black pixels counted so far
+    unsigned int last_keyframe; ///< frame number of the last received key-frame
 } BlackFrameContext;
 
 static int query_formats(AVFilterContext *ctx)
@@ -59,6 +61,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args)
     blackframe->bthresh = 32;
     blackframe->nblack = 0;
     blackframe->frame = 0;
+    blackframe->last_keyframe = 0;
 
     if (args)
         sscanf(args, "%u:%u", &blackframe->bamount, &blackframe->bthresh);
@@ -98,11 +101,16 @@ static int end_frame(AVFilterLink *inlink)
     AVFilterBufferRef *picref = inlink->cur_buf;
     int pblack = 0;
 
+    if (picref->video->key_frame)
+        blackframe->last_keyframe = blackframe->frame;
+
     pblack = blackframe->nblack * 100 / (inlink->w * inlink->h);
     if (pblack >= blackframe->bamount)
-        av_log(ctx, AV_LOG_INFO, "frame:%u pblack:%u pos:%"PRId64" pts:%"PRId64" t:%f\n",
+        av_log(ctx, AV_LOG_INFO, "frame:%u pblack:%u pos:%"PRId64" pts:%"PRId64" t:%f "
+               "type:%c last_keyframe:%d\n",
                blackframe->frame, pblack, picref->pos, picref->pts,
-               picref->pts == AV_NOPTS_VALUE ? -1 : picref->pts * av_q2d(inlink->time_base));
+               picref->pts == AV_NOPTS_VALUE ? -1 : picref->pts * av_q2d(inlink->time_base),
+               av_get_picture_type_char(picref->video->pict_type), blackframe->last_keyframe);
 
     blackframe->frame++;
     blackframe->nblack = 0;
@@ -122,11 +130,11 @@ AVFilter avfilter_vf_blackframe = {
                                           .type             = AVMEDIA_TYPE_VIDEO,
                                           .draw_slice       = draw_slice,
                                           .get_video_buffer = ff_null_get_video_buffer,
-                                          .start_frame      = ff_null_start_frame,
+                                          .start_frame      = ff_null_start_frame_keep_ref,
                                           .end_frame        = end_frame, },
                                         { .name = NULL}},
 
-    .outputs   = (const AVFilterPad[]) {{ .name             = "default",
-                                          .type             = AVMEDIA_TYPE_VIDEO },
-                                        { .name = NULL}},
+    .outputs   = (const AVFilterPad[]) {{ .name       = "default",
+                                    .type             = AVMEDIA_TYPE_VIDEO },
+                                  { .name = NULL}},
 };