From bda56e7d1259047e65c02cc40ab53728eedbfc6f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Wed, 22 Oct 2025 11:01:21 +0200
Subject: [PATCH 1/2] lavf/mxfdec: Add C++ context

---
 libavformat/mxfdec.cpp | 5 +++++
 libavformat/mxfdec.h   | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/libavformat/mxfdec.cpp b/libavformat/mxfdec.cpp
index 1b3c00c07c..522d870981 100644
--- a/libavformat/mxfdec.cpp
+++ b/libavformat/mxfdec.cpp
@@ -333,6 +333,9 @@ typedef struct MXFIndexTable {
     int8_t *offsets;            /* temporal offsets for display order to stored order conversion */
 } MXFIndexTable;
 
+struct MXFCppContext {
+};
+
 /* NOTE: klv_offset is not set (-1) for local keys */
 typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset);
 
@@ -3786,6 +3789,7 @@ int mxf_read_header(AVFormatContext *s)
     int ret;
     int64_t run_in;
 
+    mxf->cpp_context = new MXFCppContext();
     mxf->last_forward_tell = INT64_MAX;
 
     if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
@@ -4206,6 +4210,7 @@ int mxf_read_close(AVFormatContext *s)
         }
     }
     av_freep(&mxf->index_tables);
+    delete mxf->cpp_context;
 
     return 0;
 }
diff --git a/libavformat/mxfdec.h b/libavformat/mxfdec.h
index 3680e0a8ac..f4ad85fb46 100644
--- a/libavformat/mxfdec.h
+++ b/libavformat/mxfdec.h
@@ -41,6 +41,7 @@ typedef enum {
 struct MXFIndexTable;
 struct MXFMetadataSet;
 struct MXFPartition;
+struct MXFCppContext;
 
 typedef struct MXFMetadataSetGroup {
     struct MXFMetadataSet **metadata_sets;
@@ -71,6 +72,7 @@ typedef struct MXFContext {
     int nb_index_tables;
     struct MXFIndexTable *index_tables;
     int eia608_extract;
+    struct MXFCppContext *cpp_context; //< C++ context
 } MXFContext;
 
 int mxf_probe(const AVProbeData *p);
-- 
2.47.2