Implement null video sink.

Originally committed as revision 21242 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 45 insertions, 0 deletions

diff --git a/libavfilter/vsink_nullsink.c b/libavfilter/vsink_nullsink.c
new file mode 100644
index 0000000000..d87f20400b
--- /dev/null
+++ b/libavfilter/vsink_nullsink.c
@@ -0,0 +1,45 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avfilter.h"
+
+static void start_frame(AVFilterLink *link, AVFilterPicRef *picref)
+{
+}
+
+static void end_frame(AVFilterLink *link)
+{
+}
+
+AVFilter avfilter_vsink_nullsink = {
+    .name        = "nullsink",
+    .description = "Do absolutely nothing with the input video.",
+
+    .priv_size = 0,
+
+    .inputs    = (AVFilterPad[]) {
+        {
+            .name            = "default",
+            .type            = CODEC_TYPE_VIDEO,
+            .start_frame     = start_frame,
+            .end_frame       = end_frame,
+        },
+        { .name = NULL},
+    },
+    .outputs   = (AVFilterPad[]) {{ .name = NULL }},
+};