avformat: Constify all muxer/demuxers

[ffmpeg] / libavformat / rpl.c

diff --git a/libavformat/rpl.c b/libavformat/rpl.c
index c79419d558e1b72c81b5a8edee6c2f010bac22d4..f5d2b8fe59779048273c92694669ee2db9efb4a4 100644 (file)
--- a/libavformat/rpl.c
+++ b/libavformat/rpl.c
@@ -253,6 +253,9 @@ static int rpl_read_header(AVFormatContext *s)
             error |= read_line(pb, line, sizeof(line));
     }
 
+    if (s->nb_streams == 0)
+        return AVERROR_INVALIDDATA;
+
     rpl->frames_per_chunk = read_line_and_int(pb, &error);  // video frames per chunk
     if (vst && rpl->frames_per_chunk > 1 && vst->codecpar->codec_tag != 124)
         av_log(s, AV_LOG_WARNING,
@@ -379,7 +382,7 @@ static int rpl_read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat ff_rpl_demuxer = {
+const AVInputFormat ff_rpl_demuxer = {
     .name           = "rpl",
     .long_name      = NULL_IF_CONFIG_SMALL("RPL / ARMovie"),
     .priv_data_size = sizeof(RPLContext),