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Merge commit '47e547b321338c73c21fa623789f1efbd80a297a'

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* commit '47e547b321338c73c21fa623789f1efbd80a297a':
  lavc: add a null bitstream filter

Merged-by: Clément Bœsch <u@pkh.me>
This commit is contained in:
Clément Bœsch 2017-04-17 14:01:31 +02:00
commit e22d495538
4 changed files with 48 additions and 0 deletions
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3
doc/bitstream_filters.texi
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@ -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.

1
libavcodec/Makefile
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@ -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

1
libavcodec/bitstream_filters.c
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@ -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;

43
libavcodec/null_bsf.c Normal file
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@ -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,
};