put_ebml_binary(pb, elementid, str, strlen(str));
}
+// this reserves exactly the amount of space specified by size, which must be at least 2
+static void put_ebml_void(ByteIOContext *pb, uint64_t size)
+{
+ offset_t currentpos = url_ftell(pb);
+
+ if (size < 2)
+ return;
+
+ put_ebml_id(pb, EBML_ID_VOID);
+ // we need to subtract the length needed to store the size from the size we need to reserve
+ // so 2 cases, we use 8 bytes to store the size if possible, 1 byte otherwise
+ if (size < 10)
+ put_ebml_size(pb, size-1, 0);
+ else
+ put_ebml_size(pb, size-9, 7);
+ url_fseek(pb, currentpos + size, SEEK_SET);
+}
+
static offset_t start_ebml_master(ByteIOContext *pb, unsigned int elementid)
{
put_ebml_id(pb, elementid);