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lavf: add internal API to append a bsf to a stream's list

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This commit is contained in:
Rodger Combs 2015-10-07 21:10:08 -05:00
parent 1f9139b07b
commit 822e80fde3
2 changed files with 33 additions and 0 deletions
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11
libavformat/internal.h
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@ -464,6 +464,17 @@ enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st
*/
int ff_generate_avci_extradata(AVStream *st);
/**
* Add a bitstream filter to a stream.
*
* @param st output stream to add a filter to
* @param name the name of the filter to add
* @param args filter-specific argument string
* @return >0 on success;
* AVERROR code on failure
*/
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args);
/**
* Wrap errno on rename() error.
*

22
libavformat/utils.c
View File

@ -4651,6 +4651,28 @@ uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
return data;
}
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
{
AVBitStreamFilterContext *bsfc = NULL;
AVBitStreamFilterContext **dest = &st->internal->bsfc;
while (*dest && (*dest)->next)
dest = &(*dest)->next;
if (!(bsfc = av_bitstream_filter_init(name))) {
av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
return AVERROR(EINVAL);
}
if (args && !(bsfc->args = av_strdup(args))) {
av_bitstream_filter_close(bsfc);
return AVERROR(ENOMEM);
}
av_log(st->codec, AV_LOG_VERBOSE,
"Automatically inserted bitstream filter '%s'; args='%s'\n",
name, args ? args : "");
*dest = bsfc;
return 1;
}
int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
AVBitStreamFilterContext *bsfc)
{