avformat/mxfenc: update body partition with footer offset

libavformat/mxfenc.c

@@ -1938,7 +1938,7 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid,
     else
         avio_write(pb, body_partition_key, 16);
 
-    klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
+    klv_encode_ber4_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 
     // write partition value
     avio_wb16(pb, 1); // majorVersion
@@ -2905,7 +2905,7 @@ static int mxf_write_footer(AVFormatContext *s)
 {
     MXFContext *mxf = s->priv_data;
     AVIOContext *pb = s->pb;
-    int err = 0;
+    int i, err = 0;
 
     if (!mxf->header_written ||
         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
@@ -2949,6 +2949,11 @@ static int mxf_write_footer(AVFormatContext *s)
             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
                 goto end;
         }
+        // update footer partition offset
+        for (i = 0; i < mxf->body_partitions_count; i++) {
+            avio_seek(pb, mxf->body_partition_offset[i]+44, SEEK_SET);
+            avio_wb64(pb, mxf->footer_partition_offset);
+        }
     }
 
 end:

tests/ref/lavf/mxf

-eea31259441d909fedb9a0e0eb9bbdb2 *./tests/data/lavf/lavf.mxf
+649009e3d3d62eb3b6c56334d057cc4d *./tests/data/lavf/lavf.mxf
 526393 ./tests/data/lavf/lavf.mxf
 ./tests/data/lavf/lavf.mxf CRC=0x8dddfaab
-7524e7319a64b639d6ef49446d46320e *./tests/data/lavf/lavf.mxf
+5025d7f79b638166b787b3cb8364e5d9 *./tests/data/lavf/lavf.mxf
 561721 ./tests/data/lavf/lavf.mxf
 ./tests/data/lavf/lavf.mxf CRC=0x96ff1b48
-e547b44d71cd5871582522a31511ae9c *./tests/data/lavf/lavf.mxf
+02bf8f0cd8951a49e277306691cb1538 *./tests/data/lavf/lavf.mxf
 526393 ./tests/data/lavf/lavf.mxf
 ./tests/data/lavf/lavf.mxf CRC=0x8dddfaab

tests/ref/lavf/mxf_d10

-9f299fd4da6a20ef93adad7fe6a9f481 *./tests/data/lavf/lavf.mxf_d10
+e597f73ef9c9819710d2f815813eb91f *./tests/data/lavf/lavf.mxf_d10
 5332013 ./tests/data/lavf/lavf.mxf_d10
 ./tests/data/lavf/lavf.mxf_d10 CRC=0x6c74d488

tests/ref/lavf/mxf_dv25

-358791c5468c39673239e038fb64a734 *./tests/data/lavf/lavf.mxf_dv25
+0fc964fa22bc8b3a389b81b9a2efccb3 *./tests/data/lavf/lavf.mxf_dv25
 3834413 ./tests/data/lavf/lavf.mxf_dv25
 ./tests/data/lavf/lavf.mxf_dv25 CRC=0xbdaf7f52

tests/ref/lavf/mxf_dvcpro50

-fac7c59ea81c752d769335ddaa818f90 *./tests/data/lavf/lavf.mxf_dvcpro50
+aa81ea83af44a69e73849e327cc4bd12 *./tests/data/lavf/lavf.mxf_dvcpro50
 7431213 ./tests/data/lavf/lavf.mxf_dvcpro50
 ./tests/data/lavf/lavf.mxf_dvcpro50 CRC=0xe3bbe4b4

tests/ref/lavf/mxf_opatom

-49b0b3dfeb6a9ec024b047fc627b66fd *./tests/data/lavf/lavf.mxf_opatom
+06a1816aa91c733e1ef7e45d82e4f1d3 *./tests/data/lavf/lavf.mxf_opatom
 4717625 ./tests/data/lavf/lavf.mxf_opatom
 ./tests/data/lavf/lavf.mxf_opatom CRC=0xf55aa22a

tests/ref/lavf/mxf_opatom_audio

-862dc5c9f2c94bd2c545ca64f923d1a1 *./tests/data/lavf/lavf.mxf_opatom_audio
+c45bb140605339556a77e751fda2c449 *./tests/data/lavf/lavf.mxf_opatom_audio
 102969 ./tests/data/lavf/lavf.mxf_opatom_audio
 ./tests/data/lavf/lavf.mxf_opatom_audio CRC=0xd155c6ff