avformat/utils: Move ff_find_stream_index to demux_utils.c

It is only used by demuxers (and it is generally demuxers
who have to translate format-specific IDs to stream indices).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/libavformat/demux_utils.c b/libavformat/demux_utils.c
index a59476e0da..56cc6e15d8 100644
--- a/libavformat/demux_utils.c
+++ b/libavformat/demux_utils.c
@@ -367,3 +367,11 @@ int ff_get_extradata(void *logctx, AVCodecParameters *par, AVIOContext *pb, int
 
     return ret;
 }
+
+int ff_find_stream_index(const AVFormatContext *s, int id)
+{
+    for (unsigned i = 0; i < s->nb_streams; i++)
+        if (s->streams[i]->id == id)
+            return i;
+    return -1;
+}