avformat/nut: store version in the context

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/nut.h

@@ -104,6 +104,7 @@ typedef struct NUTContext {
     int sp_count;
     int64_t max_pts;
     AVRational *max_pts_tb;
+    int version;
 } NUTContext;
 
 extern const AVCodecTag ff_nut_subtitle_tags[];

libavformat/nutdec.c

@@ -232,6 +232,7 @@ static int decode_main_header(NUTContext *nut)
                tmp);
         return AVERROR(ENOSYS);
     }
+    nut->version = tmp;
 
     GET_V(stream_count, tmp > 0 && tmp <= NUT_MAX_STREAMS);
 

libavformat/nutenc.c

@@ -337,7 +337,7 @@ static void write_mainheader(NUTContext *nut, AVIOContext *bc)
         tmp_head_idx;
     int64_t tmp_match;
 
-    ff_put_v(bc, NUT_VERSION);
+    ff_put_v(bc, nut->version = NUT_VERSION);
     ff_put_v(bc, nut->avf->nb_streams);
     ff_put_v(bc, nut->max_distance);
     ff_put_v(bc, nut->time_base_count);