1 files changed, 35 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/null_bsf.c b/media/ffvpx/libavcodec/null_bsf.c
new file mode 100644
index 0000000000..24d26dfb1a
--- /dev/null
+++ b/media/ffvpx/libavcodec/null_bsf.c
@@ -0,0 +1,35 @@
+/*
+ * 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
+ */
+
+/**
+ * @file
+ * Null bitstream filter -- pass the input through unchanged.
+ */
+
+#include "avcodec.h"
+#include "bsf.h"
+
+static int null_filter(AVBSFContext *ctx, AVPacket *pkt)
+{
+    return ff_bsf_get_packet_ref(ctx, pkt);
+}
+
+const AVBitStreamFilter ff_null_bsf = {
+    .name           = "null",
+    .filter         = null_filter,
+};