# BufferHandle
- [Overview](#section1685523299165630)
- [Summary](#section1513332779165630)
- [Data Fields](#pub-attribs)
- [Details](#section617981076165630)
- [Field](#section1936812515165630)
- [handle](#a28ebaf90f9e4e04a8fa5bae04dbf8851)
- [key](#a9bc55ed9347418af6092399549ee0ff2)
- [phyAddr](#a0c8b61e872a3565f4e9e68ea8de6a669)
- [shmid](#acef4311b898b393d4473cc77d9ba0c63)
- [virAddr](#ad6dd19ba3f81e8a71607a62da61eee94)
## **Overview**
**Related Modules:**
[Codec](codec.md) | [Display](display.md)
**Description:**
Defines the buffer handle type. The virtual address of a handle maps to its physical address.
Defines the buffer handle, including the shared memory key, shared memory ID, and physical memory address.
## **Summary**
## Data Fields
## **Details**
## **Field **
## handle
```
uintptr_t BufferHandle::handle
```
**Description:**
Physical address
## key
```
int32_t BufferHandle::key
```
**Description:**
Shared memory key
## phyAddr
```
uint64_t BufferHandle::phyAddr
```
**Description:**
Physical address
## shmid
```
int32_t BufferHandle::shmid
```
**Description:**
Unique ID of the shared memory
## virAddr
```
uint8_t* BufferHandle::virAddr
```
**Description:**
Virtual address