diff options
| -rw-r--r-- | doc/bitstream_filters.texi | 3 | ||||
| -rw-r--r-- | libavcodec/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/bitstream_filters.c | 1 | ||||
| -rw-r--r-- | libavcodec/null_bsf.c | 43 |
4 files changed, 48 insertions, 0 deletions
diff --git a/doc/bitstream_filters.texi b/doc/bitstream_filters.texi index 947c31dae8..6f4846f55f 100644 --- a/doc/bitstream_filters.texi +++ b/doc/bitstream_filters.texi @@ -234,6 +234,9 @@ ffmpeg -i INPUT -c copy -bsf noise[=1] output.mkv @end example applies the modification to every byte. +@section null +This bitstream filter passes the packets through unchanged. + @section remove_extra Remove extradata from packets. diff --git a/libavcodec/Makefile b/libavcodec/Makefile index c7454543bb..62f9db5c86 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -993,6 +993,7 @@ OBJS-$(CONFIG_MOV2TEXTSUB_BSF) += movsub_bsf.o OBJS-$(CONFIG_MP3_HEADER_DECOMPRESS_BSF) += mp3_header_decompress_bsf.o \ mpegaudiodata.o OBJS-$(CONFIG_NOISE_BSF) += noise_bsf.o +OBJS-$(CONFIG_NULL_BSF) += null_bsf.o OBJS-$(CONFIG_REMOVE_EXTRADATA_BSF) += remove_extradata_bsf.o OBJS-$(CONFIG_TEXT2MOVSUB_BSF) += movsub_bsf.o OBJS-$(CONFIG_VP9_SUPERFRAME_BSF) += vp9_superframe_bsf.o diff --git a/libavcodec/bitstream_filters.c b/libavcodec/bitstream_filters.c index 2045e18b94..6893a4b6e4 100644 --- a/libavcodec/bitstream_filters.c +++ b/libavcodec/bitstream_filters.c @@ -38,6 +38,7 @@ extern const AVBitStreamFilter ff_mp3_header_decompress_bsf; extern const AVBitStreamFilter ff_mpeg4_unpack_bframes_bsf; extern const AVBitStreamFilter ff_mov2textsub_bsf; extern const AVBitStreamFilter ff_noise_bsf; +extern const AVBitStreamFilter ff_null_bsf; extern const AVBitStreamFilter ff_remove_extradata_bsf; extern const AVBitStreamFilter ff_text2movsub_bsf; extern const AVBitStreamFilter ff_vp9_superframe_bsf; diff --git a/libavcodec/null_bsf.c b/libavcodec/null_bsf.c new file mode 100644 index 0000000000..feb71248a9 --- /dev/null +++ b/libavcodec/null_bsf.c @@ -0,0 +1,43 @@ +/* + * 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 *out) +{ + AVPacket *in; + int ret; + + ret = ff_bsf_get_packet(ctx, &in); + if (ret < 0) + return ret; + av_packet_move_ref(out, in); + av_packet_free(&in); + return 0; +} + +const AVBitStreamFilter ff_null_bsf = { + .name = "null", + .filter = null_filter, +}; |