lavc: move bitstream filters into bsf/ subdir

libavcodec/bsf/chomp.c

@@ -0,0 +1,45 @@
+/*
+ * Chomp bitstream filter
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ *
+ * 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 "bsf.h"
+#include "bsf_internal.h"
+
+static int chomp_filter(AVBSFContext *ctx, AVPacket *pkt)
+{
+    int ret;
+
+    ret = ff_bsf_get_packet_ref(ctx, pkt);
+    if (ret < 0)
+        return ret;
+
+    while (pkt->size > 0 && !pkt->data[pkt->size - 1])
+        pkt->size--;
+
+    return 0;
+}
+
+/**
+ * This filter removes a string of NULL bytes from the end of a packet.
+ */
+const FFBitStreamFilter ff_chomp_bsf = {
+    .p.name = "chomp",
+    .filter = chomp_filter,
+};