---
libavformat/internal.h | 11 +++++++++++
libavformat/utils.c | 22 ++++++++++++++++++++++
2 files changed, 33 insertions(+)
diff --git a/libavformat/internal.h b/libavformat/internal.h
index 5ed548e..dcd2971 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -467,6 +467,17 @@ 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.
*
* @param oldpath source path
diff --git a/libavformat/utils.c b/libavformat/utils.c
index f751e2a..10cb023 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -4643,6 +4643,28 @@ 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)
{
--
2.6.3
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