avformat/segment: remove the check_bitstream from segment

because the BSF logic was re-factored into a shareable
function and both av_write_frame and av_interleaved_write_frame use it it
Signed-off-by: LiuQi <liuqi@gosun.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/segment.c

@@ -957,25 +957,6 @@ fail:
     return ret;
 }
 
-static int seg_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
-{
-    SegmentContext *seg = s->priv_data;
-    AVFormatContext *oc = seg->avf;
-    if (oc->oformat->check_bitstream) {
-        int ret = oc->oformat->check_bitstream(oc, pkt);
-        if (ret == 1) {
-            AVStream *st = s->streams[pkt->stream_index];
-            AVStream *ost = oc->streams[pkt->stream_index];
-            st->internal->bsfcs = ost->internal->bsfcs;
-            st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
-            ost->internal->bsfcs = NULL;
-            ost->internal->nb_bsfcs = 0;
-        }
-        return ret;
-    }
-    return 1;
-}
-
 #define OFFSET(x) offsetof(SegmentContext, x)
 #define E AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
@@ -1037,7 +1018,6 @@ AVOutputFormat ff_segment_muxer = {
     .init           = seg_init,
     .write_packet   = seg_write_packet,
     .write_trailer  = seg_write_trailer,
-    .check_bitstream = seg_check_bitstream,
     .priv_class     = &seg_class,
 };
 
@@ -1056,6 +1036,5 @@ AVOutputFormat ff_stream_segment_muxer = {
     .init           = seg_init,
     .write_packet   = seg_write_packet,
     .write_trailer  = seg_write_trailer,
-    .check_bitstream = seg_check_bitstream,
     .priv_class     = &sseg_class,
 };