lavf: add internal AVIOContext.maxsize

This allows simple and generic limiting of allocations used for packets.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/libavformat/avio.h b/libavformat/avio.h
index 7cf14f9f8c..920526f028 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -120,6 +120,12 @@ typedef struct {
      * A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
      */
     int seekable;
+
+    /**
+     * max filesize, used to limit allocations
+     * This field is internal to libavformat and access from outside is not allowed.
+     */
+     int64_t maxsize;
 } AVIOContext;
 
 /* unbuffered I/O */