# bitstream filters
OBJS-$(CONFIG_AAC_ADTSTOASC_BSF) += aac_adtstoasc_bsf.o
+OBJS-$(CONFIG_CHOMP_BSF) += chomp_bsf.o
OBJS-$(CONFIG_DUMP_EXTRADATA_BSF) += dump_extradata_bsf.o
OBJS-$(CONFIG_H264_MP4TOANNEXB_BSF) += h264_mp4toannexb_bsf.o
OBJS-$(CONFIG_IMX_DUMP_HEADER_BSF) += imx_dump_header_bsf.o
/* bitstream filters */
REGISTER_BSF (AAC_ADTSTOASC, aac_adtstoasc);
+ REGISTER_BSF (CHOMP, chomp);
REGISTER_BSF (DUMP_EXTRADATA, dump_extradata);
REGISTER_BSF (H264_MP4TOANNEXB, h264_mp4toannexb);
REGISTER_BSF (IMX_DUMP_HEADER, imx_dump_header);
--- /dev/null
+/*
+ * 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 "avcodec.h"
+#include "internal.h"
+
+static int chomp_filter(AVBitStreamFilterContext *bsfc,
+ AVCodecContext *avctx, const char *args,
+ uint8_t **poutbuf, int *poutbuf_size,
+ const uint8_t *buf, int buf_size,
+ int keyframe)
+{
+ while (buf_size > 0 && !buf[buf_size-1])
+ buf_size--;
+
+ *poutbuf = (uint8_t*) buf;
+ *poutbuf_size = buf_size;
+
+ return 0;
+}
+
+/**
+ * This filter removes a string of \0 bytes from the end of a packet.
+ */
+AVBitStreamFilter chomp_bsf = {
+ "chomp",
+ 0,
+ chomp_filter,
+};